diff --git a/igv_component/__init__.py b/igv_component/__init__.py
new file mode 100644
index 0000000000000000000000000000000000000000..b771cd6775a075c0dce55e5df388b79bdbd770ee
--- /dev/null
+++ b/igv_component/__init__.py
@@ -0,0 +1,11 @@
+import streamlit.components.v1 as components
+
+def igv_component(crispr_results=None, key=None):
+    # Define the path to the built frontend component
+    component_path = "./igv_component/build"
+
+    # Streamlit components function
+    component = components.declare_component("igv_component", path=component_path)
+
+    # Call the component and pass the CRISPR results
+    return component(crispr_results=crispr_results, key=key)
\ No newline at end of file
diff --git a/igv_component/igvcomponent.js b/igv_component/igvcomponent.js
new file mode 100644
index 0000000000000000000000000000000000000000..858612df4c5e97c5bddbc223aa35beb5c4e33a51
--- /dev/null
+++ b/igv_component/igvcomponent.js
@@ -0,0 +1,81 @@
+import React from "react";
+import { Streamlit, withStreamlitConnection } from "streamlit-component-lib";
+import igv from "igv";
+
+class IGVComponent extends React.Component {
+  constructor(props) {
+    super(props);
+    this.browser = null;
+  }
+
+  componentDidMount() {
+    // Initialize the IGV viewer with default options
+    this.initializeIGV(this.props.genomeReference || "hg19");
+  }
+
+  componentDidUpdate(prevProps) {
+    // Update the genome if it changes
+    if (this.props.genomeReference !== prevProps.genomeReference) {
+      this.initializeIGV(this.props.genomeReference);
+    }
+
+    // Update tracks when new CRISPR results are received
+    if (this.props.crisprResults !== prevProps.crisprResults) {
+      this.updateTracks(this.props.crisprResults);
+    }
+  }
+
+  initializeIGV(genomeReference) {
+    const igvDiv = document.getElementById("igvDiv");
+    const options = {
+      genome: genomeReference,
+      // Add other IGV options here based on your requirements
+    };
+
+    igv.createBrowser(igvDiv, options).then((browser) => {
+      this.browser = browser;
+      // Load initial tracks if any
+      this.updateTracks(this.props.crisprResults);
+    });
+  }
+
+  updateTracks(crisprResults) {
+    if (this.browser && crisprResults && crisprResults.length > 0) {
+        // Clear existing tracks
+        this.browser.removeAllTracks();
+
+        // Create a BED string from CRISPR results
+        let bedData = "track name='CRISPR Targets' description='CRISPR Cas9 Predictions'\n";
+        bedData += crisprResults.map(result => {
+            const chr = result[0]; // "Gene ID"
+            const start = result[1]; // "Start Pos"
+            const end = result[2]; // "End Pos"
+            const strand = result[3] === 1 ? "+" : "-"; // "Strand"
+            const name = `gRNA: ${result[4]} Score: ${result[5]}`; // "gRNA" and "Prediction"
+            return `${chr}\t${start}\t${end}\t${name}\t0\t${strand}`;
+        }).join("\n");
+
+        // Create a blob from the BED string
+        const blob = new Blob([bedData], { type: 'text/plain' });
+        const url = URL.createObjectURL(blob);
+
+        // Define a track configuration for IGV
+        const trackConfig = {
+            name: "CRISPR Targets",
+            url: url,
+            format: "bed",
+            type: "annotation",
+            indexed: false
+        };
+
+        // Load the track into the IGV browser
+        this.browser.loadTrack(trackConfig);
+    }
+}
+
+  render() {
+    return <div id="igvDiv" style={{ height: "500px" }}></div>;
+  }
+}
+
+export default withStreamlitConnection(IGVComponent);
diff --git a/igv_component/node_modules/.bin/arrow2csv b/igv_component/node_modules/.bin/arrow2csv
new file mode 100644
index 0000000000000000000000000000000000000000..5c0057329ff9f3cfd238308c9c9c5ed7a46c0768
--- /dev/null
+++ b/igv_component/node_modules/.bin/arrow2csv
@@ -0,0 +1,12 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  exec "$basedir/node"  "$basedir/../apache-arrow/bin/arrow2csv.js" "$@"
+else 
+  exec node  "$basedir/../apache-arrow/bin/arrow2csv.js" "$@"
+fi
diff --git a/igv_component/node_modules/.bin/arrow2csv.cmd b/igv_component/node_modules/.bin/arrow2csv.cmd
new file mode 100644
index 0000000000000000000000000000000000000000..9572709767de1b67d9e681e5e3fb6ebc008e0e00
--- /dev/null
+++ b/igv_component/node_modules/.bin/arrow2csv.cmd
@@ -0,0 +1,17 @@
+@ECHO off
+GOTO start
+:find_dp0
+SET dp0=%~dp0
+EXIT /b
+:start
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & "%_prog%"  "%dp0%\..\apache-arrow\bin\arrow2csv.js" %*
diff --git a/igv_component/node_modules/.bin/arrow2csv.ps1 b/igv_component/node_modules/.bin/arrow2csv.ps1
new file mode 100644
index 0000000000000000000000000000000000000000..5411f0bf29a4e665e02a4ec310d4ed78fe7b8235
--- /dev/null
+++ b/igv_component/node_modules/.bin/arrow2csv.ps1
@@ -0,0 +1,28 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "$basedir/node$exe"  "$basedir/../apache-arrow/bin/arrow2csv.js" $args
+  } else {
+    & "$basedir/node$exe"  "$basedir/../apache-arrow/bin/arrow2csv.js" $args
+  }
+  $ret=$LASTEXITCODE
+} else {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "node$exe"  "$basedir/../apache-arrow/bin/arrow2csv.js" $args
+  } else {
+    & "node$exe"  "$basedir/../apache-arrow/bin/arrow2csv.js" $args
+  }
+  $ret=$LASTEXITCODE
+}
+exit $ret
diff --git a/igv_component/node_modules/.bin/loose-envify b/igv_component/node_modules/.bin/loose-envify
new file mode 100644
index 0000000000000000000000000000000000000000..60598cb0bbca1b6683130e1457cfeb70f092f294
--- /dev/null
+++ b/igv_component/node_modules/.bin/loose-envify
@@ -0,0 +1,12 @@
+#!/bin/sh
+basedir=$(dirname "$(echo "$0" | sed -e 's,\\,/,g')")
+
+case `uname` in
+    *CYGWIN*|*MINGW*|*MSYS*) basedir=`cygpath -w "$basedir"`;;
+esac
+
+if [ -x "$basedir/node" ]; then
+  exec "$basedir/node"  "$basedir/../loose-envify/cli.js" "$@"
+else 
+  exec node  "$basedir/../loose-envify/cli.js" "$@"
+fi
diff --git a/igv_component/node_modules/.bin/loose-envify.cmd b/igv_component/node_modules/.bin/loose-envify.cmd
new file mode 100644
index 0000000000000000000000000000000000000000..599576f9314deef73a7913894357505799ab37f0
--- /dev/null
+++ b/igv_component/node_modules/.bin/loose-envify.cmd
@@ -0,0 +1,17 @@
+@ECHO off
+GOTO start
+:find_dp0
+SET dp0=%~dp0
+EXIT /b
+:start
+SETLOCAL
+CALL :find_dp0
+
+IF EXIST "%dp0%\node.exe" (
+  SET "_prog=%dp0%\node.exe"
+) ELSE (
+  SET "_prog=node"
+  SET PATHEXT=%PATHEXT:;.JS;=;%
+)
+
+endLocal & goto #_undefined_# 2>NUL || title %COMSPEC% & "%_prog%"  "%dp0%\..\loose-envify\cli.js" %*
diff --git a/igv_component/node_modules/.bin/loose-envify.ps1 b/igv_component/node_modules/.bin/loose-envify.ps1
new file mode 100644
index 0000000000000000000000000000000000000000..eb866fcaff4359355bb205dce9241950191c1c04
--- /dev/null
+++ b/igv_component/node_modules/.bin/loose-envify.ps1
@@ -0,0 +1,28 @@
+#!/usr/bin/env pwsh
+$basedir=Split-Path $MyInvocation.MyCommand.Definition -Parent
+
+$exe=""
+if ($PSVersionTable.PSVersion -lt "6.0" -or $IsWindows) {
+  # Fix case when both the Windows and Linux builds of Node
+  # are installed in the same directory
+  $exe=".exe"
+}
+$ret=0
+if (Test-Path "$basedir/node$exe") {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "$basedir/node$exe"  "$basedir/../loose-envify/cli.js" $args
+  } else {
+    & "$basedir/node$exe"  "$basedir/../loose-envify/cli.js" $args
+  }
+  $ret=$LASTEXITCODE
+} else {
+  # Support pipeline input
+  if ($MyInvocation.ExpectingInput) {
+    $input | & "node$exe"  "$basedir/../loose-envify/cli.js" $args
+  } else {
+    & "node$exe"  "$basedir/../loose-envify/cli.js" $args
+  }
+  $ret=$LASTEXITCODE
+}
+exit $ret
diff --git a/igv_component/node_modules/.package-lock.json b/igv_component/node_modules/.package-lock.json
new file mode 100644
index 0000000000000000000000000000000000000000..6027fdc8720ebd7d7d0222ce1dc1ceaeb65f7cf6
--- /dev/null
+++ b/igv_component/node_modules/.package-lock.json
@@ -0,0 +1,396 @@
+{
+  "name": "igvcomponent",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "node_modules/@types/command-line-args": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/@types/command-line-args/-/command-line-args-5.2.0.tgz",
+      "integrity": "sha512-UuKzKpJJ/Ief6ufIaIzr3A/0XnluX7RvFgwkV89Yzvm77wCh1kFaFmqN8XEnGcN62EuHdedQjEMb8mYxFLGPyA=="
+    },
+    "node_modules/@types/command-line-usage": {
+      "version": "5.0.2",
+      "resolved": "https://registry.npmjs.org/@types/command-line-usage/-/command-line-usage-5.0.2.tgz",
+      "integrity": "sha512-n7RlEEJ+4x4TS7ZQddTmNSxP+zziEG0TNsMfiRIxcIVXt71ENJ9ojeXmGO3wPoTdn7pJcU2xc3CJYMktNT6DPg=="
+    },
+    "node_modules/@types/flatbuffers": {
+      "version": "1.10.3",
+      "resolved": "https://registry.npmjs.org/@types/flatbuffers/-/flatbuffers-1.10.3.tgz",
+      "integrity": "sha512-kwJQsAROanCiMXSLjcTLmYVBIJ9Qyuqs92SaDIcj2EII2KnDgZbiU7it1Z/JfZd1gmxw/lAahMysQ6ZM+j3Ryw=="
+    },
+    "node_modules/@types/node": {
+      "version": "18.7.23",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-18.7.23.tgz",
+      "integrity": "sha512-DWNcCHolDq0ZKGizjx2DZjR/PqsYwAcYUJmfMWqtVU2MBMG5Mo+xFZrhGId5r/O5HOuMPyQEcM6KUBp5lBZZBg=="
+    },
+    "node_modules/@types/pad-left": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/@types/pad-left/-/pad-left-2.1.1.tgz",
+      "integrity": "sha512-Xd22WCRBydkGSApl5Bw0PhAOHKSVjNL3E3AwzKaps96IMraPqy5BvZIsBVK6JLwdybUzjHnuWVwpDd0JjTfHXA=="
+    },
+    "node_modules/ansi-styles": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
+      "integrity": "sha512-VT0ZI6kZRdTh8YyJw3SMbYm/u+NqfsAxEpWO0Pf9sq8/e94WxxOpPKx9FR1FlyCtOVDNOQ+8ntlqFxiRc+r5qA==",
+      "dependencies": {
+        "color-convert": "^1.9.0"
+      },
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/apache-arrow": {
+      "version": "11.0.0",
+      "resolved": "https://registry.npmjs.org/apache-arrow/-/apache-arrow-11.0.0.tgz",
+      "integrity": "sha512-M8J4y+DimIyS44w2KOmVfzNHbTroR1oDpBKK6BYnlu8xVB41lxTz0yLmapo8/WJVAt5XcinAxMm14M771dm/rA==",
+      "dependencies": {
+        "@types/command-line-args": "5.2.0",
+        "@types/command-line-usage": "5.0.2",
+        "@types/flatbuffers": "*",
+        "@types/node": "18.7.23",
+        "@types/pad-left": "2.1.1",
+        "command-line-args": "5.2.1",
+        "command-line-usage": "6.1.3",
+        "flatbuffers": "2.0.4",
+        "json-bignum": "^0.0.3",
+        "pad-left": "^2.1.0",
+        "tslib": "^2.4.0"
+      },
+      "bin": {
+        "arrow2csv": "bin/arrow2csv.js"
+      }
+    },
+    "node_modules/array-back": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/array-back/-/array-back-3.1.0.tgz",
+      "integrity": "sha512-TkuxA4UCOvxuDK6NZYXCalszEzj+TLszyASooky+i742l9TqsOdYCMJJupxRic61hwquNtppB3hgcuq9SVSH1Q==",
+      "engines": {
+        "node": ">=6"
+      }
+    },
+    "node_modules/chalk": {
+      "version": "2.4.2",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+      "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+      "dependencies": {
+        "ansi-styles": "^3.2.1",
+        "escape-string-regexp": "^1.0.5",
+        "supports-color": "^5.3.0"
+      },
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/color-convert": {
+      "version": "1.9.3",
+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
+      "integrity": "sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==",
+      "dependencies": {
+        "color-name": "1.1.3"
+      }
+    },
+    "node_modules/color-name": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
+      "integrity": "sha512-72fSenhMw2HZMTVHeCA9KCmpEIbzWiQsjN+BHcBbS9vr1mtt+vJjPdksIBNUmKAW8TFUDPJK5SUU3QhE9NEXDw=="
+    },
+    "node_modules/command-line-args": {
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/command-line-args/-/command-line-args-5.2.1.tgz",
+      "integrity": "sha512-H4UfQhZyakIjC74I9d34fGYDwk3XpSr17QhEd0Q3I9Xq1CETHo4Hcuo87WyWHpAF1aSLjLRf5lD9ZGX2qStUvg==",
+      "dependencies": {
+        "array-back": "^3.1.0",
+        "find-replace": "^3.0.0",
+        "lodash.camelcase": "^4.3.0",
+        "typical": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=4.0.0"
+      }
+    },
+    "node_modules/command-line-usage": {
+      "version": "6.1.3",
+      "resolved": "https://registry.npmjs.org/command-line-usage/-/command-line-usage-6.1.3.tgz",
+      "integrity": "sha512-sH5ZSPr+7UStsloltmDh7Ce5fb8XPlHyoPzTpyyMuYCtervL65+ubVZ6Q61cFtFl62UyJlc8/JwERRbAFPUqgw==",
+      "dependencies": {
+        "array-back": "^4.0.2",
+        "chalk": "^2.4.2",
+        "table-layout": "^1.0.2",
+        "typical": "^5.2.0"
+      },
+      "engines": {
+        "node": ">=8.0.0"
+      }
+    },
+    "node_modules/command-line-usage/node_modules/array-back": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/array-back/-/array-back-4.0.2.tgz",
+      "integrity": "sha512-NbdMezxqf94cnNfWLL7V/im0Ub+Anbb0IoZhvzie8+4HJ4nMQuzHuy49FkGYCJK2yAloZ3meiB6AVMClbrI1vg==",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/command-line-usage/node_modules/typical": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/typical/-/typical-5.2.0.tgz",
+      "integrity": "sha512-dvdQgNDNJo+8B2uBQoqdb11eUCE1JQXhvjC/CZtgvZseVd5TYMXnq0+vuUemXbd/Se29cTaUuPX3YIc2xgbvIg==",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/deep-extend": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/deep-extend/-/deep-extend-0.6.0.tgz",
+      "integrity": "sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA==",
+      "engines": {
+        "node": ">=4.0.0"
+      }
+    },
+    "node_modules/escape-string-regexp": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
+      "integrity": "sha512-vbRorB5FUQWvla16U8R/qgaFIya2qGzwDrNmCZuYKrbdSUMG6I1ZCGQRefkRVhuOkIGVne7BQ35DSfo1qvJqFg==",
+      "engines": {
+        "node": ">=0.8.0"
+      }
+    },
+    "node_modules/find-replace": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/find-replace/-/find-replace-3.0.0.tgz",
+      "integrity": "sha512-6Tb2myMioCAgv5kfvP5/PkZZ/ntTpVK39fHY7WkWBgvbeE+VHd/tZuZ4mrC+bxh4cfOZeYKVPaJIZtZXV7GNCQ==",
+      "dependencies": {
+        "array-back": "^3.0.1"
+      },
+      "engines": {
+        "node": ">=4.0.0"
+      }
+    },
+    "node_modules/flatbuffers": {
+      "version": "2.0.4",
+      "resolved": "https://registry.npmjs.org/flatbuffers/-/flatbuffers-2.0.4.tgz",
+      "integrity": "sha512-4rUFVDPjSoP0tOII34oQf+72NKU7E088U5oX7kwICahft0UB2kOQ9wUzzCp+OHxByERIfxRDCgX5mP8Pjkfl0g=="
+    },
+    "node_modules/has-flag": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/has-flag/-/has-flag-3.0.0.tgz",
+      "integrity": "sha512-sKJf1+ceQBr4SMkvQnBDNDtf4TXpVhVGateu0t918bl30FnbE2m4vNLX+VWe/dpjlb+HugGYzW7uQXH98HPEYw==",
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/hoist-non-react-statics": {
+      "version": "3.3.2",
+      "resolved": "https://registry.npmjs.org/hoist-non-react-statics/-/hoist-non-react-statics-3.3.2.tgz",
+      "integrity": "sha512-/gGivxi8JPKWNm/W0jSmzcMPpfpPLc3dY/6GxhX2hQ9iGj3aDfklV4ET7NjKpSinLpJ5vafa9iiGIEZg10SfBw==",
+      "dependencies": {
+        "react-is": "^16.7.0"
+      }
+    },
+    "node_modules/igv": {
+      "version": "2.15.11",
+      "resolved": "https://registry.npmjs.org/igv/-/igv-2.15.11.tgz",
+      "integrity": "sha512-oJs6z4ogv1GefIWaMdG5s4jFRuFQ/PjUgrGBMn12SbeeIC/VgHkHr56K5yIaC8ZSyameq/7IFDQaXu0qIu6cpA=="
+    },
+    "node_modules/js-tokens": {
+      "version": "4.0.0",
+      "resolved": "https://registry.npmjs.org/js-tokens/-/js-tokens-4.0.0.tgz",
+      "integrity": "sha512-RdJUflcE3cUzKiMqQgsCu06FPu9UdIJO0beYbPhHN4k6apgJtifcoCtT9bcxOpYBtpD2kCM6Sbzg4CausW/PKQ=="
+    },
+    "node_modules/json-bignum": {
+      "version": "0.0.3",
+      "resolved": "https://registry.npmjs.org/json-bignum/-/json-bignum-0.0.3.tgz",
+      "integrity": "sha512-2WHyXj3OfHSgNyuzDbSxI1w2jgw5gkWSWhS7Qg4bWXx1nLk3jnbwfUeS0PSba3IzpTUWdHxBieELUzXRjQB2zg==",
+      "engines": {
+        "node": ">=0.8"
+      }
+    },
+    "node_modules/lodash.camelcase": {
+      "version": "4.3.0",
+      "resolved": "https://registry.npmjs.org/lodash.camelcase/-/lodash.camelcase-4.3.0.tgz",
+      "integrity": "sha512-TwuEnCnxbc3rAvhf/LbG7tJUDzhqXyFnv3dtzLOPgCG/hODL7WFnsbwktkD7yUV0RrreP/l1PALq/YSg6VvjlA=="
+    },
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diff --git a/igv_component/node_modules/@types/command-line-args/LICENSE b/igv_component/node_modules/@types/command-line-args/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..9e841e7a26e4eb057b24511e7b92d42b257a80e5
--- /dev/null
+++ b/igv_component/node_modules/@types/command-line-args/LICENSE
@@ -0,0 +1,21 @@
+    MIT License
+
+    Copyright (c) Microsoft Corporation.
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE
diff --git a/igv_component/node_modules/@types/command-line-args/README.md b/igv_component/node_modules/@types/command-line-args/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..43dce281906afad14559d90cf691a3b3b1a8684b
--- /dev/null
+++ b/igv_component/node_modules/@types/command-line-args/README.md
@@ -0,0 +1,16 @@
+# Installation
+> `npm install --save @types/command-line-args`
+
+# Summary
+This package contains type definitions for command-line-args (https://github.com/75lb/command-line-args).
+
+# Details
+Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/command-line-args.
+
+### Additional Details
+ * Last updated: Fri, 06 Aug 2021 17:01:23 GMT
+ * Dependencies: none
+ * Global values: none
+
+# Credits
+These definitions were written by [Lloyd Brookes](https://github.com/75lb).
diff --git a/igv_component/node_modules/@types/command-line-args/index.d.ts b/igv_component/node_modules/@types/command-line-args/index.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..5e459bb1add633ba136da634867e60444a7798b1
--- /dev/null
+++ b/igv_component/node_modules/@types/command-line-args/index.d.ts
@@ -0,0 +1,96 @@
+// Type definitions for command-line-args 5.2
+// Project: https://github.com/75lb/command-line-args
+// Definitions by: Lloyd Brookes <https://github.com/75lb>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
+
+/**
+ * Returns an object containing option values parsed from the command line. By default it parses the global `process.argv` array.
+ * Parsing is strict by default. To be more permissive, enable `partial` or `stopAtFirstUnknown` modes.
+ */
+declare function commandLineArgs(optionDefinitions: commandLineArgs.OptionDefinition[], options?: commandLineArgs.ParseOptions): commandLineArgs.CommandLineOptions;
+
+declare namespace commandLineArgs {
+    interface CommandLineOptions {
+        /**
+         * Command-line arguments not parsed by `commandLineArgs`.
+         */
+        _unknown?: string[] | undefined;
+        [propName: string]: any;
+    }
+
+    interface ParseOptions {
+        /**
+         * An array of strings which if present will be parsed instead of `process.argv`.
+         */
+        argv?: string[] | undefined;
+
+        /**
+         * If `true`, `commandLineArgs` will not throw on unknown options or values, instead returning them in the `_unknown` property of the output.
+         */
+        partial?: boolean | undefined;
+
+        /**
+         * If `true`, `commandLineArgs` will not throw on unknown options or values. Instead, parsing will stop at the first unknown argument
+         * and the remaining arguments returned in the `_unknown` property of the output. If set, `partial: true` is implied.
+         */
+        stopAtFirstUnknown?: boolean | undefined;
+
+        /**
+         * If `true`, options with hypenated names (e.g. `move-to`) will be returned in camel-case (e.g. `moveTo`).
+         */
+        camelCase?: boolean | undefined;
+
+        /**
+         * If `true`, the case of each option name or alias parsed is insignificant. For example, `--Verbose` and
+         * `--verbose` would be parsed identically, as would the aliases `-V` and `-v`. Defaults to false.
+         */
+        caseInsensitive?: boolean | undefined;
+    }
+
+    interface OptionDefinition {
+        /**
+         * The long option name.
+         */
+        name: string;
+
+        /**
+         * A setter function (you receive the output from this) enabling you to be specific about the type and value received. Typical values
+         * are `String` (the default), `Number` and `Boolean` but you can use a custom function. If no option value was set you will receive `null`.
+         */
+        type?: ((input: string) => any) | undefined;
+
+        /**
+         * A getopt-style short option name. Can be any single character except a digit or hyphen.
+         */
+        alias?: string | undefined;
+
+        /**
+         * Set this flag if the option accepts multiple values. In the output, you will receive an array of values each passed through the `type` function.
+         */
+        multiple?: boolean | undefined;
+
+        /**
+         * Identical to `multiple` but with greedy parsing disabled.
+         */
+        lazyMultiple?: boolean | undefined;
+
+        /**
+         * Any values unaccounted for by an option definition will be set on the `defaultOption`. This flag is typically set
+         * on the most commonly-used option to enable more concise usage.
+         */
+        defaultOption?: boolean | undefined;
+
+        /**
+         * An initial value for the option.
+         */
+        defaultValue?: any;
+
+        /**
+         * One or more group names the option belongs to.
+         */
+        group?: string | string[] | undefined;
+    }
+}
+
+export = commandLineArgs;
diff --git a/igv_component/node_modules/@types/command-line-args/package.json b/igv_component/node_modules/@types/command-line-args/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..8c1bc9684c337d6e465dc71e865eeff6ae8dd701
--- /dev/null
+++ b/igv_component/node_modules/@types/command-line-args/package.json
@@ -0,0 +1,25 @@
+{
+    "name": "@types/command-line-args",
+    "version": "5.2.0",
+    "description": "TypeScript definitions for command-line-args",
+    "homepage": "https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/command-line-args",
+    "license": "MIT",
+    "contributors": [
+        {
+            "name": "Lloyd Brookes",
+            "url": "https://github.com/75lb",
+            "githubUsername": "75lb"
+        }
+    ],
+    "main": "",
+    "types": "index.d.ts",
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/DefinitelyTyped/DefinitelyTyped.git",
+        "directory": "types/command-line-args"
+    },
+    "scripts": {},
+    "dependencies": {},
+    "typesPublisherContentHash": "b44afacbbb8ed8fce26cd811d8299b1c12f8b34f1229bda8fbbc802679ecb17c",
+    "typeScriptVersion": "3.6"
+}
\ No newline at end of file
diff --git a/igv_component/node_modules/@types/command-line-usage/LICENSE b/igv_component/node_modules/@types/command-line-usage/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..9e841e7a26e4eb057b24511e7b92d42b257a80e5
--- /dev/null
+++ b/igv_component/node_modules/@types/command-line-usage/LICENSE
@@ -0,0 +1,21 @@
+    MIT License
+
+    Copyright (c) Microsoft Corporation.
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE
diff --git a/igv_component/node_modules/@types/command-line-usage/README.md b/igv_component/node_modules/@types/command-line-usage/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..9e43e9b921000d443ec8adabb7421c76c89453a1
--- /dev/null
+++ b/igv_component/node_modules/@types/command-line-usage/README.md
@@ -0,0 +1,16 @@
+# Installation
+> `npm install --save @types/command-line-usage`
+
+# Summary
+This package contains type definitions for command-line-usage (https://github.com/75lb/command-line-usage#readme).
+
+# Details
+Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/command-line-usage.
+
+### Additional Details
+ * Last updated: Tue, 06 Jul 2021 18:05:57 GMT
+ * Dependencies: none
+ * Global values: none
+
+# Credits
+These definitions were written by [matrumz](https://github.com/matrumz), and [Andrija Dvorski](https://github.com/Dvorsky).
diff --git a/igv_component/node_modules/@types/command-line-usage/index.d.ts b/igv_component/node_modules/@types/command-line-usage/index.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..cc5da0e3396fa342b1bb51f1cb8ca947d54ea8bc
--- /dev/null
+++ b/igv_component/node_modules/@types/command-line-usage/index.d.ts
@@ -0,0 +1,82 @@
+// Type definitions for command-line-usage 5.0
+// Project: https://github.com/75lb/command-line-usage#readme
+// Definitions by: matrumz <https://github.com/matrumz>
+//                 Andrija Dvorski <https://github.com/Dvorsky>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+// TypeScript Version: 2.2
+
+/**
+ * Generates a usage guide suitable for a command-line app.
+ * @param sections One or more Section objects
+ * @alias module:command-line-usage
+ */
+declare function commandLineUsage(sections: commandLineUsage.Section | commandLineUsage.Section[]): string;
+export = commandLineUsage;
+
+declare namespace commandLineUsage {
+    /** Section object. */
+    type Section = Content | OptionList;
+
+    /** A Content section comprises a header and one or more lines of content. */
+    interface Content {
+        /** The section header, always bold and underlined. */
+        header?: string | undefined;
+        /**
+         * Overloaded property, accepting data in one of four formats.
+         *  1. A single string (one line of text).
+         *  2. An array of strings (multiple lines of text).
+         *  3. An array of objects (recordset-style data). In this case, the data will be rendered in table format. The property names of each object are not important, so long as they are
+         *     consistent throughout the array.
+         *  4. An object with two properties - data and options. In this case, the data and options will be passed directly to the underlying table layout module for rendering.
+         */
+        content?: string | string[] | any[] | { data: any; options: any } | undefined;
+        /** Set to true to avoid indentation and wrapping. Useful for banners. */
+        raw?: boolean | undefined;
+    }
+
+    /** Describes a command-line option. Additionally, if generating a usage guide with command-line-usage you could optionally add description and typeLabel properties to each definition. */
+    interface OptionDefinition {
+        name: string;
+        /**
+         * The type value is a setter function (you receive the output from this), enabling you to be specific about the type and value received.
+         *
+         * The most common values used are String (the default), Number and Boolean but you can use a custom function.
+         */
+        type?: any;
+        /** getopt-style short option names. Can be any single character (unicode included) except a digit or hyphen. */
+        alias?: string | undefined;
+        /** Set this flag if the option takes a list of values. You will receive an array of values, each passed through the type function (if specified). */
+        multiple?: boolean | undefined;
+        /** Identical to multiple but with greedy parsing disabled. */
+        lazyMultiple?: boolean | undefined;
+        /** Any values unaccounted for by an option definition will be set on the defaultOption. This flag is typically set on the most commonly-used option to make for more concise usage. */
+        defaultOption?: boolean | undefined;
+        /** An initial value for the option. */
+        defaultValue?: any;
+        /**
+         * When your app has a large amount of options it makes sense to organise them in groups.
+         *
+         * There are two automatic groups: _all (contains all options) and _none (contains options without a group specified in their definition).
+         */
+        group?: string | string[] | undefined;
+        /** A string describing the option. */
+        description?: string | undefined;
+        /** A string to replace the default type string (e.g. <string>). It's often more useful to set a more descriptive type label, like <ms>, <files>, <command>, etc.. */
+        typeLabel?: string | undefined;
+    }
+
+    /** A OptionList section adds a table displaying details of the available options. */
+    interface OptionList {
+        header?: string | undefined;
+        /** An array of option definition objects. */
+        optionList?: OptionDefinition[] | undefined;
+        /** If specified, only options from this particular group will be printed.  */
+        group?: string | string[] | undefined;
+        /** The names of one of more option definitions to hide from the option list.  */
+        hide?: string | string[] | undefined;
+        /** If true, the option alias will be displayed after the name, i.e. --verbose, -v instead of -v, --verbose). */
+        reverseNameOrder?: boolean | undefined;
+        /** An options object suitable for passing into table-layout. */
+        tableOptions?: any;
+    }
+}
diff --git a/igv_component/node_modules/@types/command-line-usage/package.json b/igv_component/node_modules/@types/command-line-usage/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..6a9332fa575a19694485522f07333887b859cfb9
--- /dev/null
+++ b/igv_component/node_modules/@types/command-line-usage/package.json
@@ -0,0 +1,30 @@
+{
+    "name": "@types/command-line-usage",
+    "version": "5.0.2",
+    "description": "TypeScript definitions for command-line-usage",
+    "homepage": "https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/command-line-usage",
+    "license": "MIT",
+    "contributors": [
+        {
+            "name": "matrumz",
+            "url": "https://github.com/matrumz",
+            "githubUsername": "matrumz"
+        },
+        {
+            "name": "Andrija Dvorski",
+            "url": "https://github.com/Dvorsky",
+            "githubUsername": "Dvorsky"
+        }
+    ],
+    "main": "",
+    "types": "index.d.ts",
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/DefinitelyTyped/DefinitelyTyped.git",
+        "directory": "types/command-line-usage"
+    },
+    "scripts": {},
+    "dependencies": {},
+    "typesPublisherContentHash": "03b9ed61ee642797665fa7cf8854bd11d48568e26c096514ec0f348a5407a5e5",
+    "typeScriptVersion": "3.6"
+}
\ No newline at end of file
diff --git a/igv_component/node_modules/@types/flatbuffers/LICENSE b/igv_component/node_modules/@types/flatbuffers/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..9e841e7a26e4eb057b24511e7b92d42b257a80e5
--- /dev/null
+++ b/igv_component/node_modules/@types/flatbuffers/LICENSE
@@ -0,0 +1,21 @@
+    MIT License
+
+    Copyright (c) Microsoft Corporation.
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE
diff --git a/igv_component/node_modules/@types/flatbuffers/README.md b/igv_component/node_modules/@types/flatbuffers/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..f707edaf5a613d6009c0d7f0a9f4de8b0f881722
--- /dev/null
+++ b/igv_component/node_modules/@types/flatbuffers/README.md
@@ -0,0 +1,15 @@
+# Installation
+> `npm install --save @types/flatbuffers`
+
+# Summary
+This package contains type definitions for flatbuffers (http://google.github.io/flatbuffers/index.html).
+
+# Details
+Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/flatbuffers.
+
+### Additional Details
+ * Last updated: Tue, 07 Nov 2023 03:09:37 GMT
+ * Dependencies: none
+
+# Credits
+These definitions were written by [Kamil Rojewski](kamil.rojewski@gmail.com), and [Robin Giese](robin@grumpycorp.com).
diff --git a/igv_component/node_modules/@types/flatbuffers/index.d.ts b/igv_component/node_modules/@types/flatbuffers/index.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..f45c1d94a7932a17b379d8ed2fea5b3a45f34d40
--- /dev/null
+++ b/igv_component/node_modules/@types/flatbuffers/index.d.ts
@@ -0,0 +1,301 @@
+export { flatbuffers };
+
+declare global {
+    namespace flatbuffers {
+        type Offset = number;
+
+        interface Table {
+            bb: ByteBuffer | null;
+            bb_pos: number;
+        }
+
+        const SIZEOF_SHORT: number;
+        const SIZEOF_INT: number;
+        const FILE_IDENTIFIER_LENGTH: number;
+        const SIZE_PREFIX_LENGTH: number;
+
+        enum Encoding {
+            UTF8_BYTES,
+            UTF16_STRING,
+        }
+
+        const int32: Int32Array;
+        const float32: Float32Array;
+        const float64: Float64Array;
+        const isLittleEndian: boolean;
+
+        ////////////////////////////////////////////////////////////////////////////////
+
+        class Long {
+            low: number;
+            high: number;
+            static ZERO: Long;
+            constructor(low: number, high: number);
+            toFloat64(): number;
+            equals(other: any): boolean;
+            static create(low: number, high: number): Long;
+        }
+
+        ////////////////////////////////////////////////////////////////////////////////
+
+        class Builder {
+            constructor(initial_size?: number);
+
+            /**
+             * Reset all the state in this FlatBufferBuilder
+             * so it can be reused to construct another buffer.
+             */
+            clear(): void;
+
+            /**
+             * In order to save space, fields that are set to their default value
+             * don't get serialized into the buffer. Forcing defaults provides a
+             * way to manually disable this optimization.
+             *
+             * @param forceDefaults true always serializes default values
+             */
+            forceDefaults(forceDefaults: boolean): void;
+
+            /**
+             * Get the ByteBuffer representing the FlatBuffer. Only call this after you've
+             * called finish(). The actual data starts at the ByteBuffer's current position,
+             * not necessarily at 0.
+             */
+            dataBuffer(): ByteBuffer;
+
+            /**
+             * Get the ByteBuffer representing the FlatBuffer. Only call this after you've
+             * called finish(). The actual data starts at the ByteBuffer's current position,
+             * not necessarily at 0.
+             */
+            asUint8Array(): Uint8Array;
+
+            /**
+             * Prepare to write an element of `size` after `additional_bytes` have been
+             * written, e.g. if you write a string, you need to align such the int length
+             * field is aligned to 4 bytes, and the string data follows it directly. If all
+             * you need to do is alignment, `additional_bytes` will be 0.
+             *
+             * @param size This is the of the new element to write
+             * @param additional_bytes The padding size
+             */
+            prep(size: number, additional_bytes: number): void;
+
+            pad(byte_size: number): void;
+
+            writeInt8(value: number): void;
+            writeInt16(value: number): void;
+            writeInt32(value: number): void;
+            writeInt64(value: Long): void;
+            writeFloat32(value: number): void;
+            writeFloat64(value: number): void;
+
+            addInt8(value: number): void;
+            addInt16(value: number): void;
+            addInt32(value: number): void;
+            addInt64(value: Long): void;
+            addFloat32(value: number): void;
+            addFloat64(value: number): void;
+            addFieldInt8(voffset: number, value: number, defaultValue: number): void;
+            addFieldInt16(voffset: number, value: number, defaultValue: number): void;
+            addFieldInt32(voffset: number, value: number, defaultValue: number): void;
+            addFieldInt64(voffset: number, value: Long, defaultValue: Long): void;
+            addFieldFloat32(voffset: number, value: number, defaultValue: number): void;
+            addFieldFloat64(voffset: number, value: number, defaultValue: number): void;
+
+            addFieldOffset(voffset: number, value: Offset, defaultValue: Offset): void;
+
+            /**
+             * Structs are stored inline, so nothing additional is being added. `d` is always 0.
+             */
+            addFieldStruct(voffset: number, value: Offset, defaultValue: Offset): void;
+
+            /**
+             * Structures are always stored inline, they need to be created right
+             * where they're used.  You'll get this assertion failure if you
+             * created it elsewhere.
+             *
+             * @param obj The offset of the created object
+             */
+            nested(obj: Offset): void;
+
+            /**
+             * Should not be creating any other object, string or vector
+             * while an object is being constructed
+             */
+            notNested(): void;
+
+            /**
+             * Set the current vtable at `voffset` to the current location in the buffer.
+             */
+            slot(voffset: number): void;
+
+            /**
+             * @returns Offset relative to the end of the buffer.
+             */
+            offset(): Offset;
+
+            /**
+             * Doubles the size of the backing ByteBuffer and copies the old data towards
+             * the end of the new buffer (since we build the buffer backwards).
+             *
+             * @param bb The current buffer with the existing data
+             * @returns A new byte buffer with the old data copied
+             * to it. The data is located at the end of the buffer.
+             */
+            static growByteBuffer(bb: ByteBuffer): ByteBuffer;
+
+            /**
+             * Adds on offset, relative to where it will be written.
+             *
+             * @param offset The offset to add
+             */
+            addOffset(offset: Offset): void;
+
+            /**
+             * Start encoding a new object in the buffer.  Users will not usually need to
+             * call this directly. The FlatBuffers compiler will generate helper methods
+             * that call this method internally.
+             */
+            startObject(numfields: number): void;
+
+            /**
+             * Finish off writing the object that is under construction.
+             *
+             * @returns The offset to the object inside `dataBuffer`
+             */
+            endObject(): Offset;
+
+            finish(root_table: Offset, file_identifier?: string, size_prefix?: boolean): void;
+            finishSizePrefixed(root_table: Offset, file_identifier?: string): void;
+
+            /**
+             * This checks a required field has been set in a given table that has
+             * just been constructed.
+             */
+            requiredField(table: Offset, field: number): void;
+
+            /**
+             * Start a new array/vector of objects.  Users usually will not call
+             * this directly. The FlatBuffers compiler will create a start/end
+             * method for vector types in generated code.
+             *
+             * @param elem_size The size of each element in the array
+             * @param num_elems The number of elements in the array
+             * @param alignment The alignment of the array
+             */
+            startVector(elem_size: number, num_elems: number, alignment: number): void;
+
+            /**
+             * Finish off the creation of an array and all its elements. The array must be
+             * created with `startVector`.
+             *
+             * @returns The offset at which the newly created array
+             * starts.
+             */
+            endVector(): Offset;
+
+            /**
+             * Encode the string `s` in the buffer using UTF-8. If a Uint8Array is passed
+             * instead of a string, it is assumed to contain valid UTF-8 encoded data.
+             *
+             * @param s The string to encode
+             * @return The offset in the buffer where the encoded string starts
+             */
+            createString(s: string | Uint8Array): Offset;
+
+            /**
+             * Convenience function for creating Long objects.
+             */
+            createLong(low: number, high: number): Long;
+        }
+
+        ////////////////////////////////////////////////////////////////////////////////
+
+        class ByteBuffer {
+            constructor(bytes: Uint8Array);
+
+            static allocate(byte_size: number): ByteBuffer;
+
+            clear(): void;
+
+            bytes(): Uint8Array;
+
+            position(): number;
+
+            setPosition(position: number): void;
+
+            capacity(): number;
+
+            readInt8(offset: number): number;
+            readUint8(offset: number): number;
+            readInt16(offset: number): number;
+            readUint16(offset: number): number;
+            readInt32(offset: number): number;
+            readUint32(offset: number): number;
+            readInt64(offset: number): Long;
+            readUint64(offset: number): Long;
+            readFloat32(offset: number): number;
+            readFloat64(offset: number): number;
+
+            writeInt8(offset: number, value: number): void;
+            writeUint8(offset: number, value: number): void;
+            writeInt16(offset: number, value: number): void;
+            writeUint16(offset: number, value: number): void;
+            writeInt32(offset: number, value: number): void;
+            writeUint32(offset: number, value: number): void;
+            writeInt64(offset: number, value: Long): void;
+            writeUint64(offset: number, value: Long): void;
+            writeFloat32(offset: number, value: number): void;
+            writeFloat64(offset: number, value: number): void;
+
+            getBufferIdentifier(): string;
+
+            /**
+             * Look up a field in the vtable, return an offset into the object, or 0 if the
+             * field is not present.
+             */
+            __offset(bb_pos: number, vtable_offset: number): number;
+
+            /**
+             * Initialize any Table-derived type to point to the union at the given offset.
+             */
+            __union<T extends Table>(t: T, offset: number): T;
+
+            /**
+             * Create a JavaScript string from UTF-8 data stored inside the FlatBuffer.
+             * This allocates a new string and converts to wide chars upon each access.
+             *
+             * To avoid the conversion to UTF-16, pass flatbuffers.Encoding.UTF8_BYTES as
+             * the "optionalEncoding" argument. This is useful for avoiding conversion to
+             * and from UTF-16 when the data will just be packaged back up in another
+             * FlatBuffer later on.
+             *
+             * @param optionalEncoding Defaults to UTF16_STRING
+             */
+            __string(offset: number, optionalEncoding?: Encoding): string | Uint8Array;
+
+            /**
+             * Retrieve the relative offset stored at "offset"
+             */
+            __indirect(offset: number): number;
+
+            /**
+             * Get the start of data of a vector whose offset is stored at "offset" in this object.
+             */
+            __vector(offset: number): number;
+
+            /**
+             * Get the length of a vector whose offset is stored at "offset" in this object.
+             */
+            __vector_len(offset: number): number;
+
+            __has_identifier(ident: string): boolean;
+
+            /**
+             * Convenience function for creating Long objects.
+             */
+            createLong(low: number, high: number): Long;
+        }
+    }
+}
diff --git a/igv_component/node_modules/@types/flatbuffers/package.json b/igv_component/node_modules/@types/flatbuffers/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..47adf534d51993e65866922831be45f7ac8edc99
--- /dev/null
+++ b/igv_component/node_modules/@types/flatbuffers/package.json
@@ -0,0 +1,28 @@
+{
+    "name": "@types/flatbuffers",
+    "version": "1.10.3",
+    "description": "TypeScript definitions for flatbuffers",
+    "homepage": "https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/flatbuffers",
+    "license": "MIT",
+    "contributors": [
+        {
+            "name": "Kamil Rojewski",
+            "url": "kamil.rojewski@gmail.com"
+        },
+        {
+            "name": "Robin Giese",
+            "url": "robin@grumpycorp.com"
+        }
+    ],
+    "main": "",
+    "types": "index.d.ts",
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/DefinitelyTyped/DefinitelyTyped.git",
+        "directory": "types/flatbuffers"
+    },
+    "scripts": {},
+    "dependencies": {},
+    "typesPublisherContentHash": "25e10a0cd9ec5476e7089ed89e9cf2f820f8675685cfcc1a2fc33483354e82d3",
+    "typeScriptVersion": "4.5"
+}
\ No newline at end of file
diff --git a/igv_component/node_modules/@types/node/LICENSE b/igv_component/node_modules/@types/node/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..9e841e7a26e4eb057b24511e7b92d42b257a80e5
--- /dev/null
+++ b/igv_component/node_modules/@types/node/LICENSE
@@ -0,0 +1,21 @@
+    MIT License
+
+    Copyright (c) Microsoft Corporation.
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE
diff --git a/igv_component/node_modules/@types/node/README.md b/igv_component/node_modules/@types/node/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..d7a010574fa1910ce65c0c071f3145e1ea65c532
--- /dev/null
+++ b/igv_component/node_modules/@types/node/README.md
@@ -0,0 +1,16 @@
+# Installation
+> `npm install --save @types/node`
+
+# Summary
+This package contains type definitions for Node.js (https://nodejs.org/).
+
+# Details
+Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/node.
+
+### Additional Details
+ * Last updated: Mon, 26 Sep 2022 19:33:03 GMT
+ * Dependencies: none
+ * Global values: `AbortController`, `AbortSignal`, `__dirname`, `__filename`, `console`, `exports`, `gc`, `global`, `module`, `process`, `require`, `structuredClone`
+
+# Credits
+These definitions were written by [Microsoft TypeScript](https://github.com/Microsoft), [DefinitelyTyped](https://github.com/DefinitelyTyped), [Alberto Schiabel](https://github.com/jkomyno), [Alvis HT Tang](https://github.com/alvis), [Andrew Makarov](https://github.com/r3nya), [Benjamin Toueg](https://github.com/btoueg), [Chigozirim C.](https://github.com/smac89), [David Junger](https://github.com/touffy), [Deividas Bakanas](https://github.com/DeividasBakanas), [Eugene Y. Q. Shen](https://github.com/eyqs), [Hannes Magnusson](https://github.com/Hannes-Magnusson-CK), [Huw](https://github.com/hoo29), [Kelvin Jin](https://github.com/kjin), [Klaus Meinhardt](https://github.com/ajafff), [Lishude](https://github.com/islishude), [Mariusz Wiktorczyk](https://github.com/mwiktorczyk), [Mohsen Azimi](https://github.com/mohsen1), [Nicolas Even](https://github.com/n-e), [Nikita Galkin](https://github.com/galkin), [Parambir Singh](https://github.com/parambirs), [Sebastian Silbermann](https://github.com/eps1lon), [Simon Schick](https://github.com/SimonSchick), [Thomas den Hollander](https://github.com/ThomasdenH), [Wilco Bakker](https://github.com/WilcoBakker), [wwwy3y3](https://github.com/wwwy3y3), [Samuel Ainsworth](https://github.com/samuela), [Kyle Uehlein](https://github.com/kuehlein), [Thanik Bhongbhibhat](https://github.com/bhongy), [Marcin Kopacz](https://github.com/chyzwar), [Trivikram Kamat](https://github.com/trivikr), [Junxiao Shi](https://github.com/yoursunny), [Ilia Baryshnikov](https://github.com/qwelias), [ExE Boss](https://github.com/ExE-Boss), [Piotr Błażejewicz](https://github.com/peterblazejewicz), [Anna Henningsen](https://github.com/addaleax), [Victor Perin](https://github.com/victorperin), [Yongsheng Zhang](https://github.com/ZYSzys), [NodeJS Contributors](https://github.com/NodeJS), [Linus Unnebäck](https://github.com/LinusU), [wafuwafu13](https://github.com/wafuwafu13), and [Matteo Collina](https://github.com/mcollina).
diff --git a/igv_component/node_modules/@types/node/assert.d.ts b/igv_component/node_modules/@types/node/assert.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..8e02a66a0c5da00bab59fbaf8e17bedecd976ffd
--- /dev/null
+++ b/igv_component/node_modules/@types/node/assert.d.ts
@@ -0,0 +1,911 @@
+/**
+ * The `assert` module provides a set of assertion functions for verifying
+ * invariants.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/assert.js)
+ */
+declare module 'assert' {
+    /**
+     * An alias of {@link ok}.
+     * @since v0.5.9
+     * @param value The input that is checked for being truthy.
+     */
+    function assert(value: unknown, message?: string | Error): asserts value;
+    namespace assert {
+        /**
+         * Indicates the failure of an assertion. All errors thrown by the `assert` module
+         * will be instances of the `AssertionError` class.
+         */
+        class AssertionError extends Error {
+            actual: unknown;
+            expected: unknown;
+            operator: string;
+            generatedMessage: boolean;
+            code: 'ERR_ASSERTION';
+            constructor(options?: {
+                /** If provided, the error message is set to this value. */
+                message?: string | undefined;
+                /** The `actual` property on the error instance. */
+                actual?: unknown | undefined;
+                /** The `expected` property on the error instance. */
+                expected?: unknown | undefined;
+                /** The `operator` property on the error instance. */
+                operator?: string | undefined;
+                /** If provided, the generated stack trace omits frames before this function. */
+                // tslint:disable-next-line:ban-types
+                stackStartFn?: Function | undefined;
+            });
+        }
+        /**
+         * This feature is currently experimental and behavior might still change.
+         * @since v14.2.0, v12.19.0
+         * @experimental
+         */
+        class CallTracker {
+            /**
+             * The wrapper function is expected to be called exactly `exact` times. If the
+             * function has not been called exactly `exact` times when `tracker.verify()` is called, then `tracker.verify()` will throw an
+             * error.
+             *
+             * ```js
+             * import assert from 'assert';
+             *
+             * // Creates call tracker.
+             * const tracker = new assert.CallTracker();
+             *
+             * function func() {}
+             *
+             * // Returns a function that wraps func() that must be called exact times
+             * // before tracker.verify().
+             * const callsfunc = tracker.calls(func);
+             * ```
+             * @since v14.2.0, v12.19.0
+             * @param [fn='A no-op function']
+             * @param [exact=1]
+             * @return that wraps `fn`.
+             */
+            calls(exact?: number): () => void;
+            calls<Func extends (...args: any[]) => any>(fn?: Func, exact?: number): Func;
+            /**
+             * The arrays contains information about the expected and actual number of calls of
+             * the functions that have not been called the expected number of times.
+             *
+             * ```js
+             * import assert from 'assert';
+             *
+             * // Creates call tracker.
+             * const tracker = new assert.CallTracker();
+             *
+             * function func() {}
+             *
+             * function foo() {}
+             *
+             * // Returns a function that wraps func() that must be called exact times
+             * // before tracker.verify().
+             * const callsfunc = tracker.calls(func, 2);
+             *
+             * // Returns an array containing information on callsfunc()
+             * tracker.report();
+             * // [
+             * //  {
+             * //    message: 'Expected the func function to be executed 2 time(s) but was
+             * //    executed 0 time(s).',
+             * //    actual: 0,
+             * //    expected: 2,
+             * //    operator: 'func',
+             * //    stack: stack trace
+             * //  }
+             * // ]
+             * ```
+             * @since v14.2.0, v12.19.0
+             * @return of objects containing information about the wrapper functions returned by `calls`.
+             */
+            report(): CallTrackerReportInformation[];
+            /**
+             * Iterates through the list of functions passed to `tracker.calls()` and will throw an error for functions that
+             * have not been called the expected number of times.
+             *
+             * ```js
+             * import assert from 'assert';
+             *
+             * // Creates call tracker.
+             * const tracker = new assert.CallTracker();
+             *
+             * function func() {}
+             *
+             * // Returns a function that wraps func() that must be called exact times
+             * // before tracker.verify().
+             * const callsfunc = tracker.calls(func, 2);
+             *
+             * callsfunc();
+             *
+             * // Will throw an error since callsfunc() was only called once.
+             * tracker.verify();
+             * ```
+             * @since v14.2.0, v12.19.0
+             */
+            verify(): void;
+        }
+        interface CallTrackerReportInformation {
+            message: string;
+            /** The actual number of times the function was called. */
+            actual: number;
+            /** The number of times the function was expected to be called. */
+            expected: number;
+            /** The name of the function that is wrapped. */
+            operator: string;
+            /** A stack trace of the function. */
+            stack: object;
+        }
+        type AssertPredicate = RegExp | (new () => object) | ((thrown: unknown) => boolean) | object | Error;
+        /**
+         * Throws an `AssertionError` with the provided error message or a default
+         * error message. If the `message` parameter is an instance of an `Error` then
+         * it will be thrown instead of the `AssertionError`.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.fail();
+         * // AssertionError [ERR_ASSERTION]: Failed
+         *
+         * assert.fail('boom');
+         * // AssertionError [ERR_ASSERTION]: boom
+         *
+         * assert.fail(new TypeError('need array'));
+         * // TypeError: need array
+         * ```
+         *
+         * Using `assert.fail()` with more than two arguments is possible but deprecated.
+         * See below for further details.
+         * @since v0.1.21
+         * @param [message='Failed']
+         */
+        function fail(message?: string | Error): never;
+        /** @deprecated since v10.0.0 - use fail([message]) or other assert functions instead. */
+        function fail(
+            actual: unknown,
+            expected: unknown,
+            message?: string | Error,
+            operator?: string,
+            // tslint:disable-next-line:ban-types
+            stackStartFn?: Function
+        ): never;
+        /**
+         * Tests if `value` is truthy. It is equivalent to`assert.equal(!!value, true, message)`.
+         *
+         * If `value` is not truthy, an `AssertionError` is thrown with a `message`property set equal to the value of the `message` parameter. If the `message`parameter is `undefined`, a default
+         * error message is assigned. If the `message`parameter is an instance of an `Error` then it will be thrown instead of the`AssertionError`.
+         * If no arguments are passed in at all `message` will be set to the string:`` 'No value argument passed to `assert.ok()`' ``.
+         *
+         * Be aware that in the `repl` the error message will be different to the one
+         * thrown in a file! See below for further details.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.ok(true);
+         * // OK
+         * assert.ok(1);
+         * // OK
+         *
+         * assert.ok();
+         * // AssertionError: No value argument passed to `assert.ok()`
+         *
+         * assert.ok(false, 'it\'s false');
+         * // AssertionError: it's false
+         *
+         * // In the repl:
+         * assert.ok(typeof 123 === 'string');
+         * // AssertionError: false == true
+         *
+         * // In a file (e.g. test.js):
+         * assert.ok(typeof 123 === 'string');
+         * // AssertionError: The expression evaluated to a falsy value:
+         * //
+         * //   assert.ok(typeof 123 === 'string')
+         *
+         * assert.ok(false);
+         * // AssertionError: The expression evaluated to a falsy value:
+         * //
+         * //   assert.ok(false)
+         *
+         * assert.ok(0);
+         * // AssertionError: The expression evaluated to a falsy value:
+         * //
+         * //   assert.ok(0)
+         * ```
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * // Using `assert()` works the same:
+         * assert(0);
+         * // AssertionError: The expression evaluated to a falsy value:
+         * //
+         * //   assert(0)
+         * ```
+         * @since v0.1.21
+         */
+        function ok(value: unknown, message?: string | Error): asserts value;
+        /**
+         * **Strict assertion mode**
+         *
+         * An alias of {@link strictEqual}.
+         *
+         * **Legacy assertion mode**
+         *
+         * > Stability: 3 - Legacy: Use {@link strictEqual} instead.
+         *
+         * Tests shallow, coercive equality between the `actual` and `expected` parameters
+         * using the [`==` operator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Equality). `NaN` is specially handled
+         * and treated as being identical if both sides are `NaN`.
+         *
+         * ```js
+         * import assert from 'assert';
+         *
+         * assert.equal(1, 1);
+         * // OK, 1 == 1
+         * assert.equal(1, '1');
+         * // OK, 1 == '1'
+         * assert.equal(NaN, NaN);
+         * // OK
+         *
+         * assert.equal(1, 2);
+         * // AssertionError: 1 == 2
+         * assert.equal({ a: { b: 1 } }, { a: { b: 1 } });
+         * // AssertionError: { a: { b: 1 } } == { a: { b: 1 } }
+         * ```
+         *
+         * If the values are not equal, an `AssertionError` is thrown with a `message`property set equal to the value of the `message` parameter. If the `message`parameter is undefined, a default
+         * error message is assigned. If the `message`parameter is an instance of an `Error` then it will be thrown instead of the`AssertionError`.
+         * @since v0.1.21
+         */
+        function equal(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * **Strict assertion mode**
+         *
+         * An alias of {@link notStrictEqual}.
+         *
+         * **Legacy assertion mode**
+         *
+         * > Stability: 3 - Legacy: Use {@link notStrictEqual} instead.
+         *
+         * Tests shallow, coercive inequality with the [`!=` operator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Inequality). `NaN` is
+         * specially handled and treated as being identical if both sides are `NaN`.
+         *
+         * ```js
+         * import assert from 'assert';
+         *
+         * assert.notEqual(1, 2);
+         * // OK
+         *
+         * assert.notEqual(1, 1);
+         * // AssertionError: 1 != 1
+         *
+         * assert.notEqual(1, '1');
+         * // AssertionError: 1 != '1'
+         * ```
+         *
+         * If the values are equal, an `AssertionError` is thrown with a `message`property set equal to the value of the `message` parameter. If the `message`parameter is undefined, a default error
+         * message is assigned. If the `message`parameter is an instance of an `Error` then it will be thrown instead of the`AssertionError`.
+         * @since v0.1.21
+         */
+        function notEqual(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * **Strict assertion mode**
+         *
+         * An alias of {@link deepStrictEqual}.
+         *
+         * **Legacy assertion mode**
+         *
+         * > Stability: 3 - Legacy: Use {@link deepStrictEqual} instead.
+         *
+         * Tests for deep equality between the `actual` and `expected` parameters. Consider
+         * using {@link deepStrictEqual} instead. {@link deepEqual} can have
+         * surprising results.
+         *
+         * _Deep equality_ means that the enumerable "own" properties of child objects
+         * are also recursively evaluated by the following rules.
+         * @since v0.1.21
+         */
+        function deepEqual(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * **Strict assertion mode**
+         *
+         * An alias of {@link notDeepStrictEqual}.
+         *
+         * **Legacy assertion mode**
+         *
+         * > Stability: 3 - Legacy: Use {@link notDeepStrictEqual} instead.
+         *
+         * Tests for any deep inequality. Opposite of {@link deepEqual}.
+         *
+         * ```js
+         * import assert from 'assert';
+         *
+         * const obj1 = {
+         *   a: {
+         *     b: 1
+         *   }
+         * };
+         * const obj2 = {
+         *   a: {
+         *     b: 2
+         *   }
+         * };
+         * const obj3 = {
+         *   a: {
+         *     b: 1
+         *   }
+         * };
+         * const obj4 = Object.create(obj1);
+         *
+         * assert.notDeepEqual(obj1, obj1);
+         * // AssertionError: { a: { b: 1 } } notDeepEqual { a: { b: 1 } }
+         *
+         * assert.notDeepEqual(obj1, obj2);
+         * // OK
+         *
+         * assert.notDeepEqual(obj1, obj3);
+         * // AssertionError: { a: { b: 1 } } notDeepEqual { a: { b: 1 } }
+         *
+         * assert.notDeepEqual(obj1, obj4);
+         * // OK
+         * ```
+         *
+         * If the values are deeply equal, an `AssertionError` is thrown with a`message` property set equal to the value of the `message` parameter. If the`message` parameter is undefined, a default
+         * error message is assigned. If the`message` parameter is an instance of an `Error` then it will be thrown
+         * instead of the `AssertionError`.
+         * @since v0.1.21
+         */
+        function notDeepEqual(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * Tests strict equality between the `actual` and `expected` parameters as
+         * determined by [`Object.is()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is).
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.strictEqual(1, 2);
+         * // AssertionError [ERR_ASSERTION]: Expected inputs to be strictly equal:
+         * //
+         * // 1 !== 2
+         *
+         * assert.strictEqual(1, 1);
+         * // OK
+         *
+         * assert.strictEqual('Hello foobar', 'Hello World!');
+         * // AssertionError [ERR_ASSERTION]: Expected inputs to be strictly equal:
+         * // + actual - expected
+         * //
+         * // + 'Hello foobar'
+         * // - 'Hello World!'
+         * //          ^
+         *
+         * const apples = 1;
+         * const oranges = 2;
+         * assert.strictEqual(apples, oranges, `apples ${apples} !== oranges ${oranges}`);
+         * // AssertionError [ERR_ASSERTION]: apples 1 !== oranges 2
+         *
+         * assert.strictEqual(1, '1', new TypeError('Inputs are not identical'));
+         * // TypeError: Inputs are not identical
+         * ```
+         *
+         * If the values are not strictly equal, an `AssertionError` is thrown with a`message` property set equal to the value of the `message` parameter. If the`message` parameter is undefined, a
+         * default error message is assigned. If the`message` parameter is an instance of an `Error` then it will be thrown
+         * instead of the `AssertionError`.
+         * @since v0.1.21
+         */
+        function strictEqual<T>(actual: unknown, expected: T, message?: string | Error): asserts actual is T;
+        /**
+         * Tests strict inequality between the `actual` and `expected` parameters as
+         * determined by [`Object.is()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is).
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.notStrictEqual(1, 2);
+         * // OK
+         *
+         * assert.notStrictEqual(1, 1);
+         * // AssertionError [ERR_ASSERTION]: Expected "actual" to be strictly unequal to:
+         * //
+         * // 1
+         *
+         * assert.notStrictEqual(1, '1');
+         * // OK
+         * ```
+         *
+         * If the values are strictly equal, an `AssertionError` is thrown with a`message` property set equal to the value of the `message` parameter. If the`message` parameter is undefined, a
+         * default error message is assigned. If the`message` parameter is an instance of an `Error` then it will be thrown
+         * instead of the `AssertionError`.
+         * @since v0.1.21
+         */
+        function notStrictEqual(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * Tests for deep equality between the `actual` and `expected` parameters.
+         * "Deep" equality means that the enumerable "own" properties of child objects
+         * are recursively evaluated also by the following rules.
+         * @since v1.2.0
+         */
+        function deepStrictEqual<T>(actual: unknown, expected: T, message?: string | Error): asserts actual is T;
+        /**
+         * Tests for deep strict inequality. Opposite of {@link deepStrictEqual}.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.notDeepStrictEqual({ a: 1 }, { a: '1' });
+         * // OK
+         * ```
+         *
+         * If the values are deeply and strictly equal, an `AssertionError` is thrown
+         * with a `message` property set equal to the value of the `message` parameter. If
+         * the `message` parameter is undefined, a default error message is assigned. If
+         * the `message` parameter is an instance of an `Error` then it will be thrown
+         * instead of the `AssertionError`.
+         * @since v1.2.0
+         */
+        function notDeepStrictEqual(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * Expects the function `fn` to throw an error.
+         *
+         * If specified, `error` can be a [`Class`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes),
+         * [`RegExp`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions), a validation function,
+         * a validation object where each property will be tested for strict deep equality,
+         * or an instance of error where each property will be tested for strict deep
+         * equality including the non-enumerable `message` and `name` properties. When
+         * using an object, it is also possible to use a regular expression, when
+         * validating against a string property. See below for examples.
+         *
+         * If specified, `message` will be appended to the message provided by the`AssertionError` if the `fn` call fails to throw or in case the error validation
+         * fails.
+         *
+         * Custom validation object/error instance:
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * const err = new TypeError('Wrong value');
+         * err.code = 404;
+         * err.foo = 'bar';
+         * err.info = {
+         *   nested: true,
+         *   baz: 'text'
+         * };
+         * err.reg = /abc/i;
+         *
+         * assert.throws(
+         *   () => {
+         *     throw err;
+         *   },
+         *   {
+         *     name: 'TypeError',
+         *     message: 'Wrong value',
+         *     info: {
+         *       nested: true,
+         *       baz: 'text'
+         *     }
+         *     // Only properties on the validation object will be tested for.
+         *     // Using nested objects requires all properties to be present. Otherwise
+         *     // the validation is going to fail.
+         *   }
+         * );
+         *
+         * // Using regular expressions to validate error properties:
+         * throws(
+         *   () => {
+         *     throw err;
+         *   },
+         *   {
+         *     // The `name` and `message` properties are strings and using regular
+         *     // expressions on those will match against the string. If they fail, an
+         *     // error is thrown.
+         *     name: /^TypeError$/,
+         *     message: /Wrong/,
+         *     foo: 'bar',
+         *     info: {
+         *       nested: true,
+         *       // It is not possible to use regular expressions for nested properties!
+         *       baz: 'text'
+         *     },
+         *     // The `reg` property contains a regular expression and only if the
+         *     // validation object contains an identical regular expression, it is going
+         *     // to pass.
+         *     reg: /abc/i
+         *   }
+         * );
+         *
+         * // Fails due to the different `message` and `name` properties:
+         * throws(
+         *   () => {
+         *     const otherErr = new Error('Not found');
+         *     // Copy all enumerable properties from `err` to `otherErr`.
+         *     for (const [key, value] of Object.entries(err)) {
+         *       otherErr[key] = value;
+         *     }
+         *     throw otherErr;
+         *   },
+         *   // The error's `message` and `name` properties will also be checked when using
+         *   // an error as validation object.
+         *   err
+         * );
+         * ```
+         *
+         * Validate instanceof using constructor:
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.throws(
+         *   () => {
+         *     throw new Error('Wrong value');
+         *   },
+         *   Error
+         * );
+         * ```
+         *
+         * Validate error message using [`RegExp`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions):
+         *
+         * Using a regular expression runs `.toString` on the error object, and will
+         * therefore also include the error name.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.throws(
+         *   () => {
+         *     throw new Error('Wrong value');
+         *   },
+         *   /^Error: Wrong value$/
+         * );
+         * ```
+         *
+         * Custom error validation:
+         *
+         * The function must return `true` to indicate all internal validations passed.
+         * It will otherwise fail with an `AssertionError`.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.throws(
+         *   () => {
+         *     throw new Error('Wrong value');
+         *   },
+         *   (err) => {
+         *     assert(err instanceof Error);
+         *     assert(/value/.test(err));
+         *     // Avoid returning anything from validation functions besides `true`.
+         *     // Otherwise, it's not clear what part of the validation failed. Instead,
+         *     // throw an error about the specific validation that failed (as done in this
+         *     // example) and add as much helpful debugging information to that error as
+         *     // possible.
+         *     return true;
+         *   },
+         *   'unexpected error'
+         * );
+         * ```
+         *
+         * `error` cannot be a string. If a string is provided as the second
+         * argument, then `error` is assumed to be omitted and the string will be used for`message` instead. This can lead to easy-to-miss mistakes. Using the same
+         * message as the thrown error message is going to result in an`ERR_AMBIGUOUS_ARGUMENT` error. Please read the example below carefully if using
+         * a string as the second argument gets considered:
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * function throwingFirst() {
+         *   throw new Error('First');
+         * }
+         *
+         * function throwingSecond() {
+         *   throw new Error('Second');
+         * }
+         *
+         * function notThrowing() {}
+         *
+         * // The second argument is a string and the input function threw an Error.
+         * // The first case will not throw as it does not match for the error message
+         * // thrown by the input function!
+         * assert.throws(throwingFirst, 'Second');
+         * // In the next example the message has no benefit over the message from the
+         * // error and since it is not clear if the user intended to actually match
+         * // against the error message, Node.js throws an `ERR_AMBIGUOUS_ARGUMENT` error.
+         * assert.throws(throwingSecond, 'Second');
+         * // TypeError [ERR_AMBIGUOUS_ARGUMENT]
+         *
+         * // The string is only used (as message) in case the function does not throw:
+         * assert.throws(notThrowing, 'Second');
+         * // AssertionError [ERR_ASSERTION]: Missing expected exception: Second
+         *
+         * // If it was intended to match for the error message do this instead:
+         * // It does not throw because the error messages match.
+         * assert.throws(throwingSecond, /Second$/);
+         *
+         * // If the error message does not match, an AssertionError is thrown.
+         * assert.throws(throwingFirst, /Second$/);
+         * // AssertionError [ERR_ASSERTION]
+         * ```
+         *
+         * Due to the confusing error-prone notation, avoid a string as the second
+         * argument.
+         * @since v0.1.21
+         */
+        function throws(block: () => unknown, message?: string | Error): void;
+        function throws(block: () => unknown, error: AssertPredicate, message?: string | Error): void;
+        /**
+         * Asserts that the function `fn` does not throw an error.
+         *
+         * Using `assert.doesNotThrow()` is actually not useful because there
+         * is no benefit in catching an error and then rethrowing it. Instead, consider
+         * adding a comment next to the specific code path that should not throw and keep
+         * error messages as expressive as possible.
+         *
+         * When `assert.doesNotThrow()` is called, it will immediately call the `fn`function.
+         *
+         * If an error is thrown and it is the same type as that specified by the `error`parameter, then an `AssertionError` is thrown. If the error is of a
+         * different type, or if the `error` parameter is undefined, the error is
+         * propagated back to the caller.
+         *
+         * If specified, `error` can be a [`Class`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes),
+         * [`RegExp`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions) or a validation
+         * function. See {@link throws} for more details.
+         *
+         * The following, for instance, will throw the `TypeError` because there is no
+         * matching error type in the assertion:
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.doesNotThrow(
+         *   () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   SyntaxError
+         * );
+         * ```
+         *
+         * However, the following will result in an `AssertionError` with the message
+         * 'Got unwanted exception...':
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.doesNotThrow(
+         *   () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   TypeError
+         * );
+         * ```
+         *
+         * If an `AssertionError` is thrown and a value is provided for the `message`parameter, the value of `message` will be appended to the `AssertionError` message:
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.doesNotThrow(
+         *   () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   /Wrong value/,
+         *   'Whoops'
+         * );
+         * // Throws: AssertionError: Got unwanted exception: Whoops
+         * ```
+         * @since v0.1.21
+         */
+        function doesNotThrow(block: () => unknown, message?: string | Error): void;
+        function doesNotThrow(block: () => unknown, error: AssertPredicate, message?: string | Error): void;
+        /**
+         * Throws `value` if `value` is not `undefined` or `null`. This is useful when
+         * testing the `error` argument in callbacks. The stack trace contains all frames
+         * from the error passed to `ifError()` including the potential new frames for`ifError()` itself.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.ifError(null);
+         * // OK
+         * assert.ifError(0);
+         * // AssertionError [ERR_ASSERTION]: ifError got unwanted exception: 0
+         * assert.ifError('error');
+         * // AssertionError [ERR_ASSERTION]: ifError got unwanted exception: 'error'
+         * assert.ifError(new Error());
+         * // AssertionError [ERR_ASSERTION]: ifError got unwanted exception: Error
+         *
+         * // Create some random error frames.
+         * let err;
+         * (function errorFrame() {
+         *   err = new Error('test error');
+         * })();
+         *
+         * (function ifErrorFrame() {
+         *   assert.ifError(err);
+         * })();
+         * // AssertionError [ERR_ASSERTION]: ifError got unwanted exception: test error
+         * //     at ifErrorFrame
+         * //     at errorFrame
+         * ```
+         * @since v0.1.97
+         */
+        function ifError(value: unknown): asserts value is null | undefined;
+        /**
+         * Awaits the `asyncFn` promise or, if `asyncFn` is a function, immediately
+         * calls the function and awaits the returned promise to complete. It will then
+         * check that the promise is rejected.
+         *
+         * If `asyncFn` is a function and it throws an error synchronously,`assert.rejects()` will return a rejected `Promise` with that error. If the
+         * function does not return a promise, `assert.rejects()` will return a rejected`Promise` with an `ERR_INVALID_RETURN_VALUE` error. In both cases the error
+         * handler is skipped.
+         *
+         * Besides the async nature to await the completion behaves identically to {@link throws}.
+         *
+         * If specified, `error` can be a [`Class`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes),
+         * [`RegExp`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions), a validation function,
+         * an object where each property will be tested for, or an instance of error where
+         * each property will be tested for including the non-enumerable `message` and`name` properties.
+         *
+         * If specified, `message` will be the message provided by the `AssertionError` if the `asyncFn` fails to reject.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * await assert.rejects(
+         *   async () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   {
+         *     name: 'TypeError',
+         *     message: 'Wrong value'
+         *   }
+         * );
+         * ```
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * await assert.rejects(
+         *   async () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   (err) => {
+         *     assert.strictEqual(err.name, 'TypeError');
+         *     assert.strictEqual(err.message, 'Wrong value');
+         *     return true;
+         *   }
+         * );
+         * ```
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.rejects(
+         *   Promise.reject(new Error('Wrong value')),
+         *   Error
+         * ).then(() => {
+         *   // ...
+         * });
+         * ```
+         *
+         * `error` cannot be a string. If a string is provided as the second
+         * argument, then `error` is assumed to be omitted and the string will be used for`message` instead. This can lead to easy-to-miss mistakes. Please read the
+         * example in {@link throws} carefully if using a string as the second
+         * argument gets considered.
+         * @since v10.0.0
+         */
+        function rejects(block: (() => Promise<unknown>) | Promise<unknown>, message?: string | Error): Promise<void>;
+        function rejects(block: (() => Promise<unknown>) | Promise<unknown>, error: AssertPredicate, message?: string | Error): Promise<void>;
+        /**
+         * Awaits the `asyncFn` promise or, if `asyncFn` is a function, immediately
+         * calls the function and awaits the returned promise to complete. It will then
+         * check that the promise is not rejected.
+         *
+         * If `asyncFn` is a function and it throws an error synchronously,`assert.doesNotReject()` will return a rejected `Promise` with that error. If
+         * the function does not return a promise, `assert.doesNotReject()` will return a
+         * rejected `Promise` with an `ERR_INVALID_RETURN_VALUE` error. In both cases
+         * the error handler is skipped.
+         *
+         * Using `assert.doesNotReject()` is actually not useful because there is little
+         * benefit in catching a rejection and then rejecting it again. Instead, consider
+         * adding a comment next to the specific code path that should not reject and keep
+         * error messages as expressive as possible.
+         *
+         * If specified, `error` can be a [`Class`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes),
+         * [`RegExp`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions) or a validation
+         * function. See {@link throws} for more details.
+         *
+         * Besides the async nature to await the completion behaves identically to {@link doesNotThrow}.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * await assert.doesNotReject(
+         *   async () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   SyntaxError
+         * );
+         * ```
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.doesNotReject(Promise.reject(new TypeError('Wrong value')))
+         *   .then(() => {
+         *     // ...
+         *   });
+         * ```
+         * @since v10.0.0
+         */
+        function doesNotReject(block: (() => Promise<unknown>) | Promise<unknown>, message?: string | Error): Promise<void>;
+        function doesNotReject(block: (() => Promise<unknown>) | Promise<unknown>, error: AssertPredicate, message?: string | Error): Promise<void>;
+        /**
+         * Expects the `string` input to match the regular expression.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.match('I will fail', /pass/);
+         * // AssertionError [ERR_ASSERTION]: The input did not match the regular ...
+         *
+         * assert.match(123, /pass/);
+         * // AssertionError [ERR_ASSERTION]: The "string" argument must be of type string.
+         *
+         * assert.match('I will pass', /pass/);
+         * // OK
+         * ```
+         *
+         * If the values do not match, or if the `string` argument is of another type than`string`, an `AssertionError` is thrown with a `message` property set equal
+         * to the value of the `message` parameter. If the `message` parameter is
+         * undefined, a default error message is assigned. If the `message` parameter is an
+         * instance of an `Error` then it will be thrown instead of the `AssertionError`.
+         * @since v13.6.0, v12.16.0
+         */
+        function match(value: string, regExp: RegExp, message?: string | Error): void;
+        /**
+         * Expects the `string` input not to match the regular expression.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.doesNotMatch('I will fail', /fail/);
+         * // AssertionError [ERR_ASSERTION]: The input was expected to not match the ...
+         *
+         * assert.doesNotMatch(123, /pass/);
+         * // AssertionError [ERR_ASSERTION]: The "string" argument must be of type string.
+         *
+         * assert.doesNotMatch('I will pass', /different/);
+         * // OK
+         * ```
+         *
+         * If the values do match, or if the `string` argument is of another type than`string`, an `AssertionError` is thrown with a `message` property set equal
+         * to the value of the `message` parameter. If the `message` parameter is
+         * undefined, a default error message is assigned. If the `message` parameter is an
+         * instance of an `Error` then it will be thrown instead of the `AssertionError`.
+         * @since v13.6.0, v12.16.0
+         */
+        function doesNotMatch(value: string, regExp: RegExp, message?: string | Error): void;
+        const strict: Omit<typeof assert, 'equal' | 'notEqual' | 'deepEqual' | 'notDeepEqual' | 'ok' | 'strictEqual' | 'deepStrictEqual' | 'ifError' | 'strict'> & {
+            (value: unknown, message?: string | Error): asserts value;
+            equal: typeof strictEqual;
+            notEqual: typeof notStrictEqual;
+            deepEqual: typeof deepStrictEqual;
+            notDeepEqual: typeof notDeepStrictEqual;
+            // Mapped types and assertion functions are incompatible?
+            // TS2775: Assertions require every name in the call target
+            // to be declared with an explicit type annotation.
+            ok: typeof ok;
+            strictEqual: typeof strictEqual;
+            deepStrictEqual: typeof deepStrictEqual;
+            ifError: typeof ifError;
+            strict: typeof strict;
+        };
+    }
+    export = assert;
+}
+declare module 'node:assert' {
+    import assert = require('assert');
+    export = assert;
+}
diff --git a/igv_component/node_modules/@types/node/assert/strict.d.ts b/igv_component/node_modules/@types/node/assert/strict.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b4319b974861f6cad84b745485af55264b13c3d8
--- /dev/null
+++ b/igv_component/node_modules/@types/node/assert/strict.d.ts
@@ -0,0 +1,8 @@
+declare module 'assert/strict' {
+    import { strict } from 'node:assert';
+    export = strict;
+}
+declare module 'node:assert/strict' {
+    import { strict } from 'node:assert';
+    export = strict;
+}
diff --git a/igv_component/node_modules/@types/node/async_hooks.d.ts b/igv_component/node_modules/@types/node/async_hooks.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..0bf4739650c5610432cdeb7d9d0ca0afac41575f
--- /dev/null
+++ b/igv_component/node_modules/@types/node/async_hooks.d.ts
@@ -0,0 +1,501 @@
+/**
+ * The `async_hooks` module provides an API to track asynchronous resources. It
+ * can be accessed using:
+ *
+ * ```js
+ * import async_hooks from 'async_hooks';
+ * ```
+ * @experimental
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/async_hooks.js)
+ */
+declare module 'async_hooks' {
+    /**
+     * ```js
+     * import { executionAsyncId } from 'async_hooks';
+     *
+     * console.log(executionAsyncId());  // 1 - bootstrap
+     * fs.open(path, 'r', (err, fd) => {
+     *   console.log(executionAsyncId());  // 6 - open()
+     * });
+     * ```
+     *
+     * The ID returned from `executionAsyncId()` is related to execution timing, not
+     * causality (which is covered by `triggerAsyncId()`):
+     *
+     * ```js
+     * const server = net.createServer((conn) => {
+     *   // Returns the ID of the server, not of the new connection, because the
+     *   // callback runs in the execution scope of the server's MakeCallback().
+     *   async_hooks.executionAsyncId();
+     *
+     * }).listen(port, () => {
+     *   // Returns the ID of a TickObject (process.nextTick()) because all
+     *   // callbacks passed to .listen() are wrapped in a nextTick().
+     *   async_hooks.executionAsyncId();
+     * });
+     * ```
+     *
+     * Promise contexts may not get precise `executionAsyncIds` by default.
+     * See the section on `promise execution tracking`.
+     * @since v8.1.0
+     * @return The `asyncId` of the current execution context. Useful to track when something calls.
+     */
+    function executionAsyncId(): number;
+    /**
+     * Resource objects returned by `executionAsyncResource()` are most often internal
+     * Node.js handle objects with undocumented APIs. Using any functions or properties
+     * on the object is likely to crash your application and should be avoided.
+     *
+     * Using `executionAsyncResource()` in the top-level execution context will
+     * return an empty object as there is no handle or request object to use,
+     * but having an object representing the top-level can be helpful.
+     *
+     * ```js
+     * import { open } from 'fs';
+     * import { executionAsyncId, executionAsyncResource } from 'async_hooks';
+     *
+     * console.log(executionAsyncId(), executionAsyncResource());  // 1 {}
+     * open(new URL(import.meta.url), 'r', (err, fd) => {
+     *   console.log(executionAsyncId(), executionAsyncResource());  // 7 FSReqWrap
+     * });
+     * ```
+     *
+     * This can be used to implement continuation local storage without the
+     * use of a tracking `Map` to store the metadata:
+     *
+     * ```js
+     * import { createServer } from 'http';
+     * import {
+     *   executionAsyncId,
+     *   executionAsyncResource,
+     *   createHook
+     * } from 'async_hooks';
+     * const sym = Symbol('state'); // Private symbol to avoid pollution
+     *
+     * createHook({
+     *   init(asyncId, type, triggerAsyncId, resource) {
+     *     const cr = executionAsyncResource();
+     *     if (cr) {
+     *       resource[sym] = cr[sym];
+     *     }
+     *   }
+     * }).enable();
+     *
+     * const server = createServer((req, res) => {
+     *   executionAsyncResource()[sym] = { state: req.url };
+     *   setTimeout(function() {
+     *     res.end(JSON.stringify(executionAsyncResource()[sym]));
+     *   }, 100);
+     * }).listen(3000);
+     * ```
+     * @since v13.9.0, v12.17.0
+     * @return The resource representing the current execution. Useful to store data within the resource.
+     */
+    function executionAsyncResource(): object;
+    /**
+     * ```js
+     * const server = net.createServer((conn) => {
+     *   // The resource that caused (or triggered) this callback to be called
+     *   // was that of the new connection. Thus the return value of triggerAsyncId()
+     *   // is the asyncId of "conn".
+     *   async_hooks.triggerAsyncId();
+     *
+     * }).listen(port, () => {
+     *   // Even though all callbacks passed to .listen() are wrapped in a nextTick()
+     *   // the callback itself exists because the call to the server's .listen()
+     *   // was made. So the return value would be the ID of the server.
+     *   async_hooks.triggerAsyncId();
+     * });
+     * ```
+     *
+     * Promise contexts may not get valid `triggerAsyncId`s by default. See
+     * the section on `promise execution tracking`.
+     * @return The ID of the resource responsible for calling the callback that is currently being executed.
+     */
+    function triggerAsyncId(): number;
+    interface HookCallbacks {
+        /**
+         * Called when a class is constructed that has the possibility to emit an asynchronous event.
+         * @param asyncId a unique ID for the async resource
+         * @param type the type of the async resource
+         * @param triggerAsyncId the unique ID of the async resource in whose execution context this async resource was created
+         * @param resource reference to the resource representing the async operation, needs to be released during destroy
+         */
+        init?(asyncId: number, type: string, triggerAsyncId: number, resource: object): void;
+        /**
+         * When an asynchronous operation is initiated or completes a callback is called to notify the user.
+         * The before callback is called just before said callback is executed.
+         * @param asyncId the unique identifier assigned to the resource about to execute the callback.
+         */
+        before?(asyncId: number): void;
+        /**
+         * Called immediately after the callback specified in before is completed.
+         * @param asyncId the unique identifier assigned to the resource which has executed the callback.
+         */
+        after?(asyncId: number): void;
+        /**
+         * Called when a promise has resolve() called. This may not be in the same execution id
+         * as the promise itself.
+         * @param asyncId the unique id for the promise that was resolve()d.
+         */
+        promiseResolve?(asyncId: number): void;
+        /**
+         * Called after the resource corresponding to asyncId is destroyed
+         * @param asyncId a unique ID for the async resource
+         */
+        destroy?(asyncId: number): void;
+    }
+    interface AsyncHook {
+        /**
+         * Enable the callbacks for a given AsyncHook instance. If no callbacks are provided enabling is a noop.
+         */
+        enable(): this;
+        /**
+         * Disable the callbacks for a given AsyncHook instance from the global pool of AsyncHook callbacks to be executed. Once a hook has been disabled it will not be called again until enabled.
+         */
+        disable(): this;
+    }
+    /**
+     * Registers functions to be called for different lifetime events of each async
+     * operation.
+     *
+     * The callbacks `init()`/`before()`/`after()`/`destroy()` are called for the
+     * respective asynchronous event during a resource's lifetime.
+     *
+     * All callbacks are optional. For example, if only resource cleanup needs to
+     * be tracked, then only the `destroy` callback needs to be passed. The
+     * specifics of all functions that can be passed to `callbacks` is in the `Hook Callbacks` section.
+     *
+     * ```js
+     * import { createHook } from 'async_hooks';
+     *
+     * const asyncHook = createHook({
+     *   init(asyncId, type, triggerAsyncId, resource) { },
+     *   destroy(asyncId) { }
+     * });
+     * ```
+     *
+     * The callbacks will be inherited via the prototype chain:
+     *
+     * ```js
+     * class MyAsyncCallbacks {
+     *   init(asyncId, type, triggerAsyncId, resource) { }
+     *   destroy(asyncId) {}
+     * }
+     *
+     * class MyAddedCallbacks extends MyAsyncCallbacks {
+     *   before(asyncId) { }
+     *   after(asyncId) { }
+     * }
+     *
+     * const asyncHook = async_hooks.createHook(new MyAddedCallbacks());
+     * ```
+     *
+     * Because promises are asynchronous resources whose lifecycle is tracked
+     * via the async hooks mechanism, the `init()`, `before()`, `after()`, and`destroy()` callbacks _must not_ be async functions that return promises.
+     * @since v8.1.0
+     * @param callbacks The `Hook Callbacks` to register
+     * @return Instance used for disabling and enabling hooks
+     */
+    function createHook(callbacks: HookCallbacks): AsyncHook;
+    interface AsyncResourceOptions {
+        /**
+         * The ID of the execution context that created this async event.
+         * @default executionAsyncId()
+         */
+        triggerAsyncId?: number | undefined;
+        /**
+         * Disables automatic `emitDestroy` when the object is garbage collected.
+         * This usually does not need to be set (even if `emitDestroy` is called
+         * manually), unless the resource's `asyncId` is retrieved and the
+         * sensitive API's `emitDestroy` is called with it.
+         * @default false
+         */
+        requireManualDestroy?: boolean | undefined;
+    }
+    /**
+     * The class `AsyncResource` is designed to be extended by the embedder's async
+     * resources. Using this, users can easily trigger the lifetime events of their
+     * own resources.
+     *
+     * The `init` hook will trigger when an `AsyncResource` is instantiated.
+     *
+     * The following is an overview of the `AsyncResource` API.
+     *
+     * ```js
+     * import { AsyncResource, executionAsyncId } from 'async_hooks';
+     *
+     * // AsyncResource() is meant to be extended. Instantiating a
+     * // new AsyncResource() also triggers init. If triggerAsyncId is omitted then
+     * // async_hook.executionAsyncId() is used.
+     * const asyncResource = new AsyncResource(
+     *   type, { triggerAsyncId: executionAsyncId(), requireManualDestroy: false }
+     * );
+     *
+     * // Run a function in the execution context of the resource. This will
+     * // * establish the context of the resource
+     * // * trigger the AsyncHooks before callbacks
+     * // * call the provided function `fn` with the supplied arguments
+     * // * trigger the AsyncHooks after callbacks
+     * // * restore the original execution context
+     * asyncResource.runInAsyncScope(fn, thisArg, ...args);
+     *
+     * // Call AsyncHooks destroy callbacks.
+     * asyncResource.emitDestroy();
+     *
+     * // Return the unique ID assigned to the AsyncResource instance.
+     * asyncResource.asyncId();
+     *
+     * // Return the trigger ID for the AsyncResource instance.
+     * asyncResource.triggerAsyncId();
+     * ```
+     */
+    class AsyncResource {
+        /**
+         * AsyncResource() is meant to be extended. Instantiating a
+         * new AsyncResource() also triggers init. If triggerAsyncId is omitted then
+         * async_hook.executionAsyncId() is used.
+         * @param type The type of async event.
+         * @param triggerAsyncId The ID of the execution context that created
+         *   this async event (default: `executionAsyncId()`), or an
+         *   AsyncResourceOptions object (since v9.3.0)
+         */
+        constructor(type: string, triggerAsyncId?: number | AsyncResourceOptions);
+        /**
+         * Binds the given function to the current execution context.
+         *
+         * The returned function will have an `asyncResource` property referencing
+         * the `AsyncResource` to which the function is bound.
+         * @since v14.8.0, v12.19.0
+         * @param fn The function to bind to the current execution context.
+         * @param type An optional name to associate with the underlying `AsyncResource`.
+         */
+        static bind<Func extends (this: ThisArg, ...args: any[]) => any, ThisArg>(
+            fn: Func,
+            type?: string,
+            thisArg?: ThisArg
+        ): Func & {
+            asyncResource: AsyncResource;
+        };
+        /**
+         * Binds the given function to execute to this `AsyncResource`'s scope.
+         *
+         * The returned function will have an `asyncResource` property referencing
+         * the `AsyncResource` to which the function is bound.
+         * @since v14.8.0, v12.19.0
+         * @param fn The function to bind to the current `AsyncResource`.
+         */
+        bind<Func extends (...args: any[]) => any>(
+            fn: Func
+        ): Func & {
+            asyncResource: AsyncResource;
+        };
+        /**
+         * Call the provided function with the provided arguments in the execution context
+         * of the async resource. This will establish the context, trigger the AsyncHooks
+         * before callbacks, call the function, trigger the AsyncHooks after callbacks, and
+         * then restore the original execution context.
+         * @since v9.6.0
+         * @param fn The function to call in the execution context of this async resource.
+         * @param thisArg The receiver to be used for the function call.
+         * @param args Optional arguments to pass to the function.
+         */
+        runInAsyncScope<This, Result>(fn: (this: This, ...args: any[]) => Result, thisArg?: This, ...args: any[]): Result;
+        /**
+         * Call all `destroy` hooks. This should only ever be called once. An error will
+         * be thrown if it is called more than once. This **must** be manually called. If
+         * the resource is left to be collected by the GC then the `destroy` hooks will
+         * never be called.
+         * @return A reference to `asyncResource`.
+         */
+        emitDestroy(): this;
+        /**
+         * @return The unique `asyncId` assigned to the resource.
+         */
+        asyncId(): number;
+        /**
+         *
+         * @return The same `triggerAsyncId` that is passed to the `AsyncResource` constructor.
+         */
+        triggerAsyncId(): number;
+    }
+    /**
+     * This class creates stores that stay coherent through asynchronous operations.
+     *
+     * While you can create your own implementation on top of the `async_hooks` module,`AsyncLocalStorage` should be preferred as it is a performant and memory safe
+     * implementation that involves significant optimizations that are non-obvious to
+     * implement.
+     *
+     * The following example uses `AsyncLocalStorage` to build a simple logger
+     * that assigns IDs to incoming HTTP requests and includes them in messages
+     * logged within each request.
+     *
+     * ```js
+     * import http from 'http';
+     * import { AsyncLocalStorage } from 'async_hooks';
+     *
+     * const asyncLocalStorage = new AsyncLocalStorage();
+     *
+     * function logWithId(msg) {
+     *   const id = asyncLocalStorage.getStore();
+     *   console.log(`${id !== undefined ? id : '-'}:`, msg);
+     * }
+     *
+     * let idSeq = 0;
+     * http.createServer((req, res) => {
+     *   asyncLocalStorage.run(idSeq++, () => {
+     *     logWithId('start');
+     *     // Imagine any chain of async operations here
+     *     setImmediate(() => {
+     *       logWithId('finish');
+     *       res.end();
+     *     });
+     *   });
+     * }).listen(8080);
+     *
+     * http.get('http://localhost:8080');
+     * http.get('http://localhost:8080');
+     * // Prints:
+     * //   0: start
+     * //   1: start
+     * //   0: finish
+     * //   1: finish
+     * ```
+     *
+     * Each instance of `AsyncLocalStorage` maintains an independent storage context.
+     * Multiple instances can safely exist simultaneously without risk of interfering
+     * with each other's data.
+     * @since v13.10.0, v12.17.0
+     */
+    class AsyncLocalStorage<T> {
+        /**
+         * Disables the instance of `AsyncLocalStorage`. All subsequent calls
+         * to `asyncLocalStorage.getStore()` will return `undefined` until`asyncLocalStorage.run()` or `asyncLocalStorage.enterWith()` is called again.
+         *
+         * When calling `asyncLocalStorage.disable()`, all current contexts linked to the
+         * instance will be exited.
+         *
+         * Calling `asyncLocalStorage.disable()` is required before the`asyncLocalStorage` can be garbage collected. This does not apply to stores
+         * provided by the `asyncLocalStorage`, as those objects are garbage collected
+         * along with the corresponding async resources.
+         *
+         * Use this method when the `asyncLocalStorage` is not in use anymore
+         * in the current process.
+         * @since v13.10.0, v12.17.0
+         * @experimental
+         */
+        disable(): void;
+        /**
+         * Returns the current store.
+         * If called outside of an asynchronous context initialized by
+         * calling `asyncLocalStorage.run()` or `asyncLocalStorage.enterWith()`, it
+         * returns `undefined`.
+         * @since v13.10.0, v12.17.0
+         */
+        getStore(): T | undefined;
+        /**
+         * Runs a function synchronously within a context and returns its
+         * return value. The store is not accessible outside of the callback function.
+         * The store is accessible to any asynchronous operations created within the
+         * callback.
+         *
+         * The optional `args` are passed to the callback function.
+         *
+         * If the callback function throws an error, the error is thrown by `run()` too.
+         * The stacktrace is not impacted by this call and the context is exited.
+         *
+         * Example:
+         *
+         * ```js
+         * const store = { id: 2 };
+         * try {
+         *   asyncLocalStorage.run(store, () => {
+         *     asyncLocalStorage.getStore(); // Returns the store object
+         *     setTimeout(() => {
+         *       asyncLocalStorage.getStore(); // Returns the store object
+         *     }, 200);
+         *     throw new Error();
+         *   });
+         * } catch (e) {
+         *   asyncLocalStorage.getStore(); // Returns undefined
+         *   // The error will be caught here
+         * }
+         * ```
+         * @since v13.10.0, v12.17.0
+         */
+        run<R, TArgs extends any[]>(store: T, callback: (...args: TArgs) => R, ...args: TArgs): R;
+        /**
+         * Runs a function synchronously outside of a context and returns its
+         * return value. The store is not accessible within the callback function or
+         * the asynchronous operations created within the callback. Any `getStore()`call done within the callback function will always return `undefined`.
+         *
+         * The optional `args` are passed to the callback function.
+         *
+         * If the callback function throws an error, the error is thrown by `exit()` too.
+         * The stacktrace is not impacted by this call and the context is re-entered.
+         *
+         * Example:
+         *
+         * ```js
+         * // Within a call to run
+         * try {
+         *   asyncLocalStorage.getStore(); // Returns the store object or value
+         *   asyncLocalStorage.exit(() => {
+         *     asyncLocalStorage.getStore(); // Returns undefined
+         *     throw new Error();
+         *   });
+         * } catch (e) {
+         *   asyncLocalStorage.getStore(); // Returns the same object or value
+         *   // The error will be caught here
+         * }
+         * ```
+         * @since v13.10.0, v12.17.0
+         * @experimental
+         */
+        exit<R, TArgs extends any[]>(callback: (...args: TArgs) => R, ...args: TArgs): R;
+        /**
+         * Transitions into the context for the remainder of the current
+         * synchronous execution and then persists the store through any following
+         * asynchronous calls.
+         *
+         * Example:
+         *
+         * ```js
+         * const store = { id: 1 };
+         * // Replaces previous store with the given store object
+         * asyncLocalStorage.enterWith(store);
+         * asyncLocalStorage.getStore(); // Returns the store object
+         * someAsyncOperation(() => {
+         *   asyncLocalStorage.getStore(); // Returns the same object
+         * });
+         * ```
+         *
+         * This transition will continue for the _entire_ synchronous execution.
+         * This means that if, for example, the context is entered within an event
+         * handler subsequent event handlers will also run within that context unless
+         * specifically bound to another context with an `AsyncResource`. That is why`run()` should be preferred over `enterWith()` unless there are strong reasons
+         * to use the latter method.
+         *
+         * ```js
+         * const store = { id: 1 };
+         *
+         * emitter.on('my-event', () => {
+         *   asyncLocalStorage.enterWith(store);
+         * });
+         * emitter.on('my-event', () => {
+         *   asyncLocalStorage.getStore(); // Returns the same object
+         * });
+         *
+         * asyncLocalStorage.getStore(); // Returns undefined
+         * emitter.emit('my-event');
+         * asyncLocalStorage.getStore(); // Returns the same object
+         * ```
+         * @since v13.11.0, v12.17.0
+         * @experimental
+         */
+        enterWith(store: T): void;
+    }
+}
+declare module 'node:async_hooks' {
+    export * from 'async_hooks';
+}
diff --git a/igv_component/node_modules/@types/node/buffer.d.ts b/igv_component/node_modules/@types/node/buffer.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..13ab33546cd318c02deab2d1e24a4c358cf67ecf
--- /dev/null
+++ b/igv_component/node_modules/@types/node/buffer.d.ts
@@ -0,0 +1,2238 @@
+/**
+ * `Buffer` objects are used to represent a fixed-length sequence of bytes. Many
+ * Node.js APIs support `Buffer`s.
+ *
+ * The `Buffer` class is a subclass of JavaScript's [`Uint8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array) class and
+ * extends it with methods that cover additional use cases. Node.js APIs accept
+ * plain [`Uint8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array) s wherever `Buffer`s are supported as well.
+ *
+ * While the `Buffer` class is available within the global scope, it is still
+ * recommended to explicitly reference it via an import or require statement.
+ *
+ * ```js
+ * import { Buffer } from 'buffer';
+ *
+ * // Creates a zero-filled Buffer of length 10.
+ * const buf1 = Buffer.alloc(10);
+ *
+ * // Creates a Buffer of length 10,
+ * // filled with bytes which all have the value `1`.
+ * const buf2 = Buffer.alloc(10, 1);
+ *
+ * // Creates an uninitialized buffer of length 10.
+ * // This is faster than calling Buffer.alloc() but the returned
+ * // Buffer instance might contain old data that needs to be
+ * // overwritten using fill(), write(), or other functions that fill the Buffer's
+ * // contents.
+ * const buf3 = Buffer.allocUnsafe(10);
+ *
+ * // Creates a Buffer containing the bytes [1, 2, 3].
+ * const buf4 = Buffer.from([1, 2, 3]);
+ *
+ * // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
+ * // are all truncated using `(value &#x26; 255)` to fit into the range 0–255.
+ * const buf5 = Buffer.from([257, 257.5, -255, '1']);
+ *
+ * // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
+ * // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
+ * // [116, 195, 169, 115, 116] (in decimal notation)
+ * const buf6 = Buffer.from('tést');
+ *
+ * // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
+ * const buf7 = Buffer.from('tést', 'latin1');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/buffer.js)
+ */
+declare module 'buffer' {
+    import { BinaryLike } from 'node:crypto';
+    export const INSPECT_MAX_BYTES: number;
+    export const kMaxLength: number;
+    export const kStringMaxLength: number;
+    export const constants: {
+        MAX_LENGTH: number;
+        MAX_STRING_LENGTH: number;
+    };
+    export type TranscodeEncoding = 'ascii' | 'utf8' | 'utf16le' | 'ucs2' | 'latin1' | 'binary';
+    /**
+     * Re-encodes the given `Buffer` or `Uint8Array` instance from one character
+     * encoding to another. Returns a new `Buffer` instance.
+     *
+     * Throws if the `fromEnc` or `toEnc` specify invalid character encodings or if
+     * conversion from `fromEnc` to `toEnc` is not permitted.
+     *
+     * Encodings supported by `buffer.transcode()` are: `'ascii'`, `'utf8'`,`'utf16le'`, `'ucs2'`, `'latin1'`, and `'binary'`.
+     *
+     * The transcoding process will use substitution characters if a given byte
+     * sequence cannot be adequately represented in the target encoding. For instance:
+     *
+     * ```js
+     * import { Buffer, transcode } from 'buffer';
+     *
+     * const newBuf = transcode(Buffer.from('€'), 'utf8', 'ascii');
+     * console.log(newBuf.toString('ascii'));
+     * // Prints: '?'
+     * ```
+     *
+     * Because the Euro (`€`) sign is not representable in US-ASCII, it is replaced
+     * with `?` in the transcoded `Buffer`.
+     * @since v7.1.0
+     * @param source A `Buffer` or `Uint8Array` instance.
+     * @param fromEnc The current encoding.
+     * @param toEnc To target encoding.
+     */
+    export function transcode(source: Uint8Array, fromEnc: TranscodeEncoding, toEnc: TranscodeEncoding): Buffer;
+    export const SlowBuffer: {
+        /** @deprecated since v6.0.0, use `Buffer.allocUnsafeSlow()` */
+        new (size: number): Buffer;
+        prototype: Buffer;
+    };
+    /**
+     * Resolves a `'blob:nodedata:...'` an associated `Blob` object registered using
+     * a prior call to `URL.createObjectURL()`.
+     * @since v16.7.0
+     * @experimental
+     * @param id A `'blob:nodedata:...` URL string returned by a prior call to `URL.createObjectURL()`.
+     */
+    export function resolveObjectURL(id: string): Blob | undefined;
+    export { Buffer };
+    /**
+     * @experimental
+     */
+    export interface BlobOptions {
+        /**
+         * @default 'utf8'
+         */
+        encoding?: BufferEncoding | undefined;
+        /**
+         * The Blob content-type. The intent is for `type` to convey
+         * the MIME media type of the data, however no validation of the type format
+         * is performed.
+         */
+        type?: string | undefined;
+    }
+    /**
+     * A [`Blob`](https://developer.mozilla.org/en-US/docs/Web/API/Blob) encapsulates immutable, raw data that can be safely shared across
+     * multiple worker threads.
+     * @since v15.7.0, v14.18.0
+     */
+    export class Blob {
+        /**
+         * The total size of the `Blob` in bytes.
+         * @since v15.7.0, v14.18.0
+         */
+        readonly size: number;
+        /**
+         * The content-type of the `Blob`.
+         * @since v15.7.0, v14.18.0
+         */
+        readonly type: string;
+        /**
+         * Creates a new `Blob` object containing a concatenation of the given sources.
+         *
+         * {ArrayBuffer}, {TypedArray}, {DataView}, and {Buffer} sources are copied into
+         * the 'Blob' and can therefore be safely modified after the 'Blob' is created.
+         *
+         * String sources are also copied into the `Blob`.
+         */
+        constructor(sources: Array<BinaryLike | Blob>, options?: BlobOptions);
+        /**
+         * Returns a promise that fulfills with an [ArrayBuffer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) containing a copy of
+         * the `Blob` data.
+         * @since v15.7.0, v14.18.0
+         */
+        arrayBuffer(): Promise<ArrayBuffer>;
+        /**
+         * Creates and returns a new `Blob` containing a subset of this `Blob` objects
+         * data. The original `Blob` is not altered.
+         * @since v15.7.0, v14.18.0
+         * @param start The starting index.
+         * @param end The ending index.
+         * @param type The content-type for the new `Blob`
+         */
+        slice(start?: number, end?: number, type?: string): Blob;
+        /**
+         * Returns a promise that fulfills with the contents of the `Blob` decoded as a
+         * UTF-8 string.
+         * @since v15.7.0, v14.18.0
+         */
+        text(): Promise<string>;
+        /**
+         * Returns a new `ReadableStream` that allows the content of the `Blob` to be read.
+         * @since v16.7.0
+         */
+        stream(): unknown; // pending web streams types
+    }
+    export import atob = globalThis.atob;
+    export import btoa = globalThis.btoa;
+    global {
+        // Buffer class
+        type BufferEncoding = 'ascii' | 'utf8' | 'utf-8' | 'utf16le' | 'ucs2' | 'ucs-2' | 'base64' | 'base64url' | 'latin1' | 'binary' | 'hex';
+        type WithImplicitCoercion<T> =
+            | T
+            | {
+                  valueOf(): T;
+              };
+        /**
+         * Raw data is stored in instances of the Buffer class.
+         * A Buffer is similar to an array of integers but corresponds to a raw memory allocation outside the V8 heap.  A Buffer cannot be resized.
+         * Valid string encodings: 'ascii'|'utf8'|'utf16le'|'ucs2'(alias of 'utf16le')|'base64'|'base64url'|'binary'(deprecated)|'hex'
+         */
+        interface BufferConstructor {
+            /**
+             * Allocates a new buffer containing the given {str}.
+             *
+             * @param str String to store in buffer.
+             * @param encoding encoding to use, optional.  Default is 'utf8'
+             * @deprecated since v10.0.0 - Use `Buffer.from(string[, encoding])` instead.
+             */
+            new (str: string, encoding?: BufferEncoding): Buffer;
+            /**
+             * Allocates a new buffer of {size} octets.
+             *
+             * @param size count of octets to allocate.
+             * @deprecated since v10.0.0 - Use `Buffer.alloc()` instead (also see `Buffer.allocUnsafe()`).
+             */
+            new (size: number): Buffer;
+            /**
+             * Allocates a new buffer containing the given {array} of octets.
+             *
+             * @param array The octets to store.
+             * @deprecated since v10.0.0 - Use `Buffer.from(array)` instead.
+             */
+            new (array: Uint8Array): Buffer;
+            /**
+             * Produces a Buffer backed by the same allocated memory as
+             * the given {ArrayBuffer}/{SharedArrayBuffer}.
+             *
+             *
+             * @param arrayBuffer The ArrayBuffer with which to share memory.
+             * @deprecated since v10.0.0 - Use `Buffer.from(arrayBuffer[, byteOffset[, length]])` instead.
+             */
+            new (arrayBuffer: ArrayBuffer | SharedArrayBuffer): Buffer;
+            /**
+             * Allocates a new buffer containing the given {array} of octets.
+             *
+             * @param array The octets to store.
+             * @deprecated since v10.0.0 - Use `Buffer.from(array)` instead.
+             */
+            new (array: ReadonlyArray<any>): Buffer;
+            /**
+             * Copies the passed {buffer} data onto a new {Buffer} instance.
+             *
+             * @param buffer The buffer to copy.
+             * @deprecated since v10.0.0 - Use `Buffer.from(buffer)` instead.
+             */
+            new (buffer: Buffer): Buffer;
+            /**
+             * Allocates a new `Buffer` using an `array` of bytes in the range `0` – `255`.
+             * Array entries outside that range will be truncated to fit into it.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Creates a new Buffer containing the UTF-8 bytes of the string 'buffer'.
+             * const buf = Buffer.from([0x62, 0x75, 0x66, 0x66, 0x65, 0x72]);
+             * ```
+             *
+             * A `TypeError` will be thrown if `array` is not an `Array` or another type
+             * appropriate for `Buffer.from()` variants.
+             *
+             * `Buffer.from(array)` and `Buffer.from(string)` may also use the internal`Buffer` pool like `Buffer.allocUnsafe()` does.
+             * @since v5.10.0
+             */
+            from(arrayBuffer: WithImplicitCoercion<ArrayBuffer | SharedArrayBuffer>, byteOffset?: number, length?: number): Buffer;
+            /**
+             * Creates a new Buffer using the passed {data}
+             * @param data data to create a new Buffer
+             */
+            from(data: Uint8Array | ReadonlyArray<number>): Buffer;
+            from(data: WithImplicitCoercion<Uint8Array | ReadonlyArray<number> | string>): Buffer;
+            /**
+             * Creates a new Buffer containing the given JavaScript string {str}.
+             * If provided, the {encoding} parameter identifies the character encoding.
+             * If not provided, {encoding} defaults to 'utf8'.
+             */
+            from(
+                str:
+                    | WithImplicitCoercion<string>
+                    | {
+                          [Symbol.toPrimitive](hint: 'string'): string;
+                      },
+                encoding?: BufferEncoding
+            ): Buffer;
+            /**
+             * Creates a new Buffer using the passed {data}
+             * @param values to create a new Buffer
+             */
+            of(...items: number[]): Buffer;
+            /**
+             * Returns `true` if `obj` is a `Buffer`, `false` otherwise.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * Buffer.isBuffer(Buffer.alloc(10)); // true
+             * Buffer.isBuffer(Buffer.from('foo')); // true
+             * Buffer.isBuffer('a string'); // false
+             * Buffer.isBuffer([]); // false
+             * Buffer.isBuffer(new Uint8Array(1024)); // false
+             * ```
+             * @since v0.1.101
+             */
+            isBuffer(obj: any): obj is Buffer;
+            /**
+             * Returns `true` if `encoding` is the name of a supported character encoding,
+             * or `false` otherwise.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * console.log(Buffer.isEncoding('utf8'));
+             * // Prints: true
+             *
+             * console.log(Buffer.isEncoding('hex'));
+             * // Prints: true
+             *
+             * console.log(Buffer.isEncoding('utf/8'));
+             * // Prints: false
+             *
+             * console.log(Buffer.isEncoding(''));
+             * // Prints: false
+             * ```
+             * @since v0.9.1
+             * @param encoding A character encoding name to check.
+             */
+            isEncoding(encoding: string): encoding is BufferEncoding;
+            /**
+             * Returns the byte length of a string when encoded using `encoding`.
+             * This is not the same as [`String.prototype.length`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/length), which does not account
+             * for the encoding that is used to convert the string into bytes.
+             *
+             * For `'base64'`, `'base64url'`, and `'hex'`, this function assumes valid input.
+             * For strings that contain non-base64/hex-encoded data (e.g. whitespace), the
+             * return value might be greater than the length of a `Buffer` created from the
+             * string.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const str = '\u00bd + \u00bc = \u00be';
+             *
+             * console.log(`${str}: ${str.length} characters, ` +
+             *             `${Buffer.byteLength(str, 'utf8')} bytes`);
+             * // Prints: ½ + ¼ = ¾: 9 characters, 12 bytes
+             * ```
+             *
+             * When `string` is a
+             * `Buffer`/[`DataView`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView)/[`TypedArray`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/-
+             * Reference/Global_Objects/TypedArray)/[`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer)/[`SharedArrayBuffer`](https://develop-
+             * er.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer), the byte length as reported by `.byteLength`is returned.
+             * @since v0.1.90
+             * @param string A value to calculate the length of.
+             * @param [encoding='utf8'] If `string` is a string, this is its encoding.
+             * @return The number of bytes contained within `string`.
+             */
+            byteLength(string: string | NodeJS.ArrayBufferView | ArrayBuffer | SharedArrayBuffer, encoding?: BufferEncoding): number;
+            /**
+             * Returns a new `Buffer` which is the result of concatenating all the `Buffer`instances in the `list` together.
+             *
+             * If the list has no items, or if the `totalLength` is 0, then a new zero-length`Buffer` is returned.
+             *
+             * If `totalLength` is not provided, it is calculated from the `Buffer` instances
+             * in `list` by adding their lengths.
+             *
+             * If `totalLength` is provided, it is coerced to an unsigned integer. If the
+             * combined length of the `Buffer`s in `list` exceeds `totalLength`, the result is
+             * truncated to `totalLength`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Create a single `Buffer` from a list of three `Buffer` instances.
+             *
+             * const buf1 = Buffer.alloc(10);
+             * const buf2 = Buffer.alloc(14);
+             * const buf3 = Buffer.alloc(18);
+             * const totalLength = buf1.length + buf2.length + buf3.length;
+             *
+             * console.log(totalLength);
+             * // Prints: 42
+             *
+             * const bufA = Buffer.concat([buf1, buf2, buf3], totalLength);
+             *
+             * console.log(bufA);
+             * // Prints: <Buffer 00 00 00 00 ...>
+             * console.log(bufA.length);
+             * // Prints: 42
+             * ```
+             *
+             * `Buffer.concat()` may also use the internal `Buffer` pool like `Buffer.allocUnsafe()` does.
+             * @since v0.7.11
+             * @param list List of `Buffer` or {@link Uint8Array} instances to concatenate.
+             * @param totalLength Total length of the `Buffer` instances in `list` when concatenated.
+             */
+            concat(list: ReadonlyArray<Uint8Array>, totalLength?: number): Buffer;
+            /**
+             * Compares `buf1` to `buf2`, typically for the purpose of sorting arrays of`Buffer` instances. This is equivalent to calling `buf1.compare(buf2)`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf1 = Buffer.from('1234');
+             * const buf2 = Buffer.from('0123');
+             * const arr = [buf1, buf2];
+             *
+             * console.log(arr.sort(Buffer.compare));
+             * // Prints: [ <Buffer 30 31 32 33>, <Buffer 31 32 33 34> ]
+             * // (This result is equal to: [buf2, buf1].)
+             * ```
+             * @since v0.11.13
+             * @return Either `-1`, `0`, or `1`, depending on the result of the comparison. See `compare` for details.
+             */
+            compare(buf1: Uint8Array, buf2: Uint8Array): -1 | 0 | 1;
+            /**
+             * Allocates a new `Buffer` of `size` bytes. If `fill` is `undefined`, the`Buffer` will be zero-filled.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.alloc(5);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 00 00 00 00 00>
+             * ```
+             *
+             * If `size` is larger than {@link constants.MAX_LENGTH} or smaller than 0, `ERR_INVALID_ARG_VALUE` is thrown.
+             *
+             * If `fill` is specified, the allocated `Buffer` will be initialized by calling `buf.fill(fill)`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.alloc(5, 'a');
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 61 61 61 61 61>
+             * ```
+             *
+             * If both `fill` and `encoding` are specified, the allocated `Buffer` will be
+             * initialized by calling `buf.fill(fill, encoding)`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.alloc(11, 'aGVsbG8gd29ybGQ=', 'base64');
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 68 65 6c 6c 6f 20 77 6f 72 6c 64>
+             * ```
+             *
+             * Calling `Buffer.alloc()` can be measurably slower than the alternative `Buffer.allocUnsafe()` but ensures that the newly created `Buffer` instance
+             * contents will never contain sensitive data from previous allocations, including
+             * data that might not have been allocated for `Buffer`s.
+             *
+             * A `TypeError` will be thrown if `size` is not a number.
+             * @since v5.10.0
+             * @param size The desired length of the new `Buffer`.
+             * @param [fill=0] A value to pre-fill the new `Buffer` with.
+             * @param [encoding='utf8'] If `fill` is a string, this is its encoding.
+             */
+            alloc(size: number, fill?: string | Buffer | number, encoding?: BufferEncoding): Buffer;
+            /**
+             * Allocates a new `Buffer` of `size` bytes. If `size` is larger than {@link constants.MAX_LENGTH} or smaller than 0, `ERR_INVALID_ARG_VALUE` is thrown.
+             *
+             * The underlying memory for `Buffer` instances created in this way is _not_
+             * _initialized_. The contents of the newly created `Buffer` are unknown and _may contain sensitive data_. Use `Buffer.alloc()` instead to initialize`Buffer` instances with zeroes.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(10);
+             *
+             * console.log(buf);
+             * // Prints (contents may vary): <Buffer a0 8b 28 3f 01 00 00 00 50 32>
+             *
+             * buf.fill(0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 00 00 00 00 00 00 00 00 00 00>
+             * ```
+             *
+             * A `TypeError` will be thrown if `size` is not a number.
+             *
+             * The `Buffer` module pre-allocates an internal `Buffer` instance of
+             * size `Buffer.poolSize` that is used as a pool for the fast allocation of new`Buffer` instances created using `Buffer.allocUnsafe()`,`Buffer.from(array)`, `Buffer.concat()`, and the
+             * deprecated`new Buffer(size)` constructor only when `size` is less than or equal
+             * to `Buffer.poolSize >> 1` (floor of `Buffer.poolSize` divided by two).
+             *
+             * Use of this pre-allocated internal memory pool is a key difference between
+             * calling `Buffer.alloc(size, fill)` vs. `Buffer.allocUnsafe(size).fill(fill)`.
+             * Specifically, `Buffer.alloc(size, fill)` will _never_ use the internal `Buffer`pool, while `Buffer.allocUnsafe(size).fill(fill)`_will_ use the internal`Buffer` pool if `size` is less
+             * than or equal to half `Buffer.poolSize`. The
+             * difference is subtle but can be important when an application requires the
+             * additional performance that `Buffer.allocUnsafe()` provides.
+             * @since v5.10.0
+             * @param size The desired length of the new `Buffer`.
+             */
+            allocUnsafe(size: number): Buffer;
+            /**
+             * Allocates a new `Buffer` of `size` bytes. If `size` is larger than {@link constants.MAX_LENGTH} or smaller than 0, `ERR_INVALID_ARG_VALUE` is thrown. A zero-length `Buffer` is created
+             * if `size` is 0.
+             *
+             * The underlying memory for `Buffer` instances created in this way is _not_
+             * _initialized_. The contents of the newly created `Buffer` are unknown and _may contain sensitive data_. Use `buf.fill(0)` to initialize
+             * such `Buffer` instances with zeroes.
+             *
+             * When using `Buffer.allocUnsafe()` to allocate new `Buffer` instances,
+             * allocations under 4 KB are sliced from a single pre-allocated `Buffer`. This
+             * allows applications to avoid the garbage collection overhead of creating many
+             * individually allocated `Buffer` instances. This approach improves both
+             * performance and memory usage by eliminating the need to track and clean up as
+             * many individual `ArrayBuffer` objects.
+             *
+             * However, in the case where a developer may need to retain a small chunk of
+             * memory from a pool for an indeterminate amount of time, it may be appropriate
+             * to create an un-pooled `Buffer` instance using `Buffer.allocUnsafeSlow()` and
+             * then copying out the relevant bits.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Need to keep around a few small chunks of memory.
+             * const store = [];
+             *
+             * socket.on('readable', () => {
+             *   let data;
+             *   while (null !== (data = readable.read())) {
+             *     // Allocate for retained data.
+             *     const sb = Buffer.allocUnsafeSlow(10);
+             *
+             *     // Copy the data into the new allocation.
+             *     data.copy(sb, 0, 0, 10);
+             *
+             *     store.push(sb);
+             *   }
+             * });
+             * ```
+             *
+             * A `TypeError` will be thrown if `size` is not a number.
+             * @since v5.12.0
+             * @param size The desired length of the new `Buffer`.
+             */
+            allocUnsafeSlow(size: number): Buffer;
+            /**
+             * This is the size (in bytes) of pre-allocated internal `Buffer` instances used
+             * for pooling. This value may be modified.
+             * @since v0.11.3
+             */
+            poolSize: number;
+        }
+        interface Buffer extends Uint8Array {
+            /**
+             * Writes `string` to `buf` at `offset` according to the character encoding in`encoding`. The `length` parameter is the number of bytes to write. If `buf` did
+             * not contain enough space to fit the entire string, only part of `string` will be
+             * written. However, partially encoded characters will not be written.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.alloc(256);
+             *
+             * const len = buf.write('\u00bd + \u00bc = \u00be', 0);
+             *
+             * console.log(`${len} bytes: ${buf.toString('utf8', 0, len)}`);
+             * // Prints: 12 bytes: ½ + ¼ = ¾
+             *
+             * const buffer = Buffer.alloc(10);
+             *
+             * const length = buffer.write('abcd', 8);
+             *
+             * console.log(`${length} bytes: ${buffer.toString('utf8', 8, 10)}`);
+             * // Prints: 2 bytes : ab
+             * ```
+             * @since v0.1.90
+             * @param string String to write to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write `string`.
+             * @param [length=buf.length - offset] Maximum number of bytes to write (written bytes will not exceed `buf.length - offset`).
+             * @param [encoding='utf8'] The character encoding of `string`.
+             * @return Number of bytes written.
+             */
+            write(string: string, encoding?: BufferEncoding): number;
+            write(string: string, offset: number, encoding?: BufferEncoding): number;
+            write(string: string, offset: number, length: number, encoding?: BufferEncoding): number;
+            /**
+             * Decodes `buf` to a string according to the specified character encoding in`encoding`. `start` and `end` may be passed to decode only a subset of `buf`.
+             *
+             * If `encoding` is `'utf8'` and a byte sequence in the input is not valid UTF-8,
+             * then each invalid byte is replaced with the replacement character `U+FFFD`.
+             *
+             * The maximum length of a string instance (in UTF-16 code units) is available
+             * as {@link constants.MAX_STRING_LENGTH}.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf1 = Buffer.allocUnsafe(26);
+             *
+             * for (let i = 0; i < 26; i++) {
+             *   // 97 is the decimal ASCII value for 'a'.
+             *   buf1[i] = i + 97;
+             * }
+             *
+             * console.log(buf1.toString('utf8'));
+             * // Prints: abcdefghijklmnopqrstuvwxyz
+             * console.log(buf1.toString('utf8', 0, 5));
+             * // Prints: abcde
+             *
+             * const buf2 = Buffer.from('tést');
+             *
+             * console.log(buf2.toString('hex'));
+             * // Prints: 74c3a97374
+             * console.log(buf2.toString('utf8', 0, 3));
+             * // Prints: té
+             * console.log(buf2.toString(undefined, 0, 3));
+             * // Prints: té
+             * ```
+             * @since v0.1.90
+             * @param [encoding='utf8'] The character encoding to use.
+             * @param [start=0] The byte offset to start decoding at.
+             * @param [end=buf.length] The byte offset to stop decoding at (not inclusive).
+             */
+            toString(encoding?: BufferEncoding, start?: number, end?: number): string;
+            /**
+             * Returns a JSON representation of `buf`. [`JSON.stringify()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify) implicitly calls
+             * this function when stringifying a `Buffer` instance.
+             *
+             * `Buffer.from()` accepts objects in the format returned from this method.
+             * In particular, `Buffer.from(buf.toJSON())` works like `Buffer.from(buf)`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x1, 0x2, 0x3, 0x4, 0x5]);
+             * const json = JSON.stringify(buf);
+             *
+             * console.log(json);
+             * // Prints: {"type":"Buffer","data":[1,2,3,4,5]}
+             *
+             * const copy = JSON.parse(json, (key, value) => {
+             *   return value &#x26;&#x26; value.type === 'Buffer' ?
+             *     Buffer.from(value) :
+             *     value;
+             * });
+             *
+             * console.log(copy);
+             * // Prints: <Buffer 01 02 03 04 05>
+             * ```
+             * @since v0.9.2
+             */
+            toJSON(): {
+                type: 'Buffer';
+                data: number[];
+            };
+            /**
+             * Returns `true` if both `buf` and `otherBuffer` have exactly the same bytes,`false` otherwise. Equivalent to `buf.compare(otherBuffer) === 0`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf1 = Buffer.from('ABC');
+             * const buf2 = Buffer.from('414243', 'hex');
+             * const buf3 = Buffer.from('ABCD');
+             *
+             * console.log(buf1.equals(buf2));
+             * // Prints: true
+             * console.log(buf1.equals(buf3));
+             * // Prints: false
+             * ```
+             * @since v0.11.13
+             * @param otherBuffer A `Buffer` or {@link Uint8Array} with which to compare `buf`.
+             */
+            equals(otherBuffer: Uint8Array): boolean;
+            /**
+             * Compares `buf` with `target` and returns a number indicating whether `buf`comes before, after, or is the same as `target` in sort order.
+             * Comparison is based on the actual sequence of bytes in each `Buffer`.
+             *
+             * * `0` is returned if `target` is the same as `buf`
+             * * `1` is returned if `target` should come _before_`buf` when sorted.
+             * * `-1` is returned if `target` should come _after_`buf` when sorted.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf1 = Buffer.from('ABC');
+             * const buf2 = Buffer.from('BCD');
+             * const buf3 = Buffer.from('ABCD');
+             *
+             * console.log(buf1.compare(buf1));
+             * // Prints: 0
+             * console.log(buf1.compare(buf2));
+             * // Prints: -1
+             * console.log(buf1.compare(buf3));
+             * // Prints: -1
+             * console.log(buf2.compare(buf1));
+             * // Prints: 1
+             * console.log(buf2.compare(buf3));
+             * // Prints: 1
+             * console.log([buf1, buf2, buf3].sort(Buffer.compare));
+             * // Prints: [ <Buffer 41 42 43>, <Buffer 41 42 43 44>, <Buffer 42 43 44> ]
+             * // (This result is equal to: [buf1, buf3, buf2].)
+             * ```
+             *
+             * The optional `targetStart`, `targetEnd`, `sourceStart`, and `sourceEnd`arguments can be used to limit the comparison to specific ranges within `target`and `buf` respectively.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf1 = Buffer.from([1, 2, 3, 4, 5, 6, 7, 8, 9]);
+             * const buf2 = Buffer.from([5, 6, 7, 8, 9, 1, 2, 3, 4]);
+             *
+             * console.log(buf1.compare(buf2, 5, 9, 0, 4));
+             * // Prints: 0
+             * console.log(buf1.compare(buf2, 0, 6, 4));
+             * // Prints: -1
+             * console.log(buf1.compare(buf2, 5, 6, 5));
+             * // Prints: 1
+             * ```
+             *
+             * `ERR_OUT_OF_RANGE` is thrown if `targetStart < 0`, `sourceStart < 0`,`targetEnd > target.byteLength`, or `sourceEnd > source.byteLength`.
+             * @since v0.11.13
+             * @param target A `Buffer` or {@link Uint8Array} with which to compare `buf`.
+             * @param [targetStart=0] The offset within `target` at which to begin comparison.
+             * @param [targetEnd=target.length] The offset within `target` at which to end comparison (not inclusive).
+             * @param [sourceStart=0] The offset within `buf` at which to begin comparison.
+             * @param [sourceEnd=buf.length] The offset within `buf` at which to end comparison (not inclusive).
+             */
+            compare(target: Uint8Array, targetStart?: number, targetEnd?: number, sourceStart?: number, sourceEnd?: number): -1 | 0 | 1;
+            /**
+             * Copies data from a region of `buf` to a region in `target`, even if the `target`memory region overlaps with `buf`.
+             *
+             * [`TypedArray.prototype.set()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/set) performs the same operation, and is available
+             * for all TypedArrays, including Node.js `Buffer`s, although it takes
+             * different function arguments.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Create two `Buffer` instances.
+             * const buf1 = Buffer.allocUnsafe(26);
+             * const buf2 = Buffer.allocUnsafe(26).fill('!');
+             *
+             * for (let i = 0; i < 26; i++) {
+             *   // 97 is the decimal ASCII value for 'a'.
+             *   buf1[i] = i + 97;
+             * }
+             *
+             * // Copy `buf1` bytes 16 through 19 into `buf2` starting at byte 8 of `buf2`.
+             * buf1.copy(buf2, 8, 16, 20);
+             * // This is equivalent to:
+             * // buf2.set(buf1.subarray(16, 20), 8);
+             *
+             * console.log(buf2.toString('ascii', 0, 25));
+             * // Prints: !!!!!!!!qrst!!!!!!!!!!!!!
+             * ```
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Create a `Buffer` and copy data from one region to an overlapping region
+             * // within the same `Buffer`.
+             *
+             * const buf = Buffer.allocUnsafe(26);
+             *
+             * for (let i = 0; i < 26; i++) {
+             *   // 97 is the decimal ASCII value for 'a'.
+             *   buf[i] = i + 97;
+             * }
+             *
+             * buf.copy(buf, 0, 4, 10);
+             *
+             * console.log(buf.toString());
+             * // Prints: efghijghijklmnopqrstuvwxyz
+             * ```
+             * @since v0.1.90
+             * @param target A `Buffer` or {@link Uint8Array} to copy into.
+             * @param [targetStart=0] The offset within `target` at which to begin writing.
+             * @param [sourceStart=0] The offset within `buf` from which to begin copying.
+             * @param [sourceEnd=buf.length] The offset within `buf` at which to stop copying (not inclusive).
+             * @return The number of bytes copied.
+             */
+            copy(target: Uint8Array, targetStart?: number, sourceStart?: number, sourceEnd?: number): number;
+            /**
+             * Returns a new `Buffer` that references the same memory as the original, but
+             * offset and cropped by the `start` and `end` indices.
+             *
+             * This method is not compatible with the `Uint8Array.prototype.slice()`,
+             * which is a superclass of `Buffer`. To copy the slice, use`Uint8Array.prototype.slice()`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from('buffer');
+             *
+             * const copiedBuf = Uint8Array.prototype.slice.call(buf);
+             * copiedBuf[0]++;
+             * console.log(copiedBuf.toString());
+             * // Prints: cuffer
+             *
+             * console.log(buf.toString());
+             * // Prints: buffer
+             *
+             * // With buf.slice(), the original buffer is modified.
+             * const notReallyCopiedBuf = buf.slice();
+             * notReallyCopiedBuf[0]++;
+             * console.log(notReallyCopiedBuf.toString());
+             * // Prints: cuffer
+             * console.log(buf.toString());
+             * // Also prints: cuffer (!)
+             * ```
+             * @since v0.3.0
+             * @deprecated Use `subarray` instead.
+             * @param [start=0] Where the new `Buffer` will start.
+             * @param [end=buf.length] Where the new `Buffer` will end (not inclusive).
+             */
+            slice(start?: number, end?: number): Buffer;
+            /**
+             * Returns a new `Buffer` that references the same memory as the original, but
+             * offset and cropped by the `start` and `end` indices.
+             *
+             * Specifying `end` greater than `buf.length` will return the same result as
+             * that of `end` equal to `buf.length`.
+             *
+             * This method is inherited from [`TypedArray.prototype.subarray()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/subarray).
+             *
+             * Modifying the new `Buffer` slice will modify the memory in the original `Buffer`because the allocated memory of the two objects overlap.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Create a `Buffer` with the ASCII alphabet, take a slice, and modify one byte
+             * // from the original `Buffer`.
+             *
+             * const buf1 = Buffer.allocUnsafe(26);
+             *
+             * for (let i = 0; i < 26; i++) {
+             *   // 97 is the decimal ASCII value for 'a'.
+             *   buf1[i] = i + 97;
+             * }
+             *
+             * const buf2 = buf1.subarray(0, 3);
+             *
+             * console.log(buf2.toString('ascii', 0, buf2.length));
+             * // Prints: abc
+             *
+             * buf1[0] = 33;
+             *
+             * console.log(buf2.toString('ascii', 0, buf2.length));
+             * // Prints: !bc
+             * ```
+             *
+             * Specifying negative indexes causes the slice to be generated relative to the
+             * end of `buf` rather than the beginning.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from('buffer');
+             *
+             * console.log(buf.subarray(-6, -1).toString());
+             * // Prints: buffe
+             * // (Equivalent to buf.subarray(0, 5).)
+             *
+             * console.log(buf.subarray(-6, -2).toString());
+             * // Prints: buff
+             * // (Equivalent to buf.subarray(0, 4).)
+             *
+             * console.log(buf.subarray(-5, -2).toString());
+             * // Prints: uff
+             * // (Equivalent to buf.subarray(1, 4).)
+             * ```
+             * @since v3.0.0
+             * @param [start=0] Where the new `Buffer` will start.
+             * @param [end=buf.length] Where the new `Buffer` will end (not inclusive).
+             */
+            subarray(start?: number, end?: number): Buffer;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as big-endian.
+             *
+             * `value` is interpreted and written as a two's complement signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(8);
+             *
+             * buf.writeBigInt64BE(0x0102030405060708n, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 01 02 03 04 05 06 07 08>
+             * ```
+             * @since v12.0.0, v10.20.0
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy: `0 <= offset <= buf.length - 8`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeBigInt64BE(value: bigint, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as little-endian.
+             *
+             * `value` is interpreted and written as a two's complement signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(8);
+             *
+             * buf.writeBigInt64LE(0x0102030405060708n, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 08 07 06 05 04 03 02 01>
+             * ```
+             * @since v12.0.0, v10.20.0
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy: `0 <= offset <= buf.length - 8`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeBigInt64LE(value: bigint, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as big-endian.
+             *
+             * This function is also available under the `writeBigUint64BE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(8);
+             *
+             * buf.writeBigUInt64BE(0xdecafafecacefaden, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer de ca fa fe ca ce fa de>
+             * ```
+             * @since v12.0.0, v10.20.0
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy: `0 <= offset <= buf.length - 8`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeBigUInt64BE(value: bigint, offset?: number): number;
+            /**
+             * @alias Buffer.writeBigUInt64BE
+             * @since v14.10.0, v12.19.0
+             */
+            writeBigUint64BE(value: bigint, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as little-endian
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(8);
+             *
+             * buf.writeBigUInt64LE(0xdecafafecacefaden, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer de fa ce ca fe fa ca de>
+             * ```
+             *
+             * This function is also available under the `writeBigUint64LE` alias.
+             * @since v12.0.0, v10.20.0
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy: `0 <= offset <= buf.length - 8`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeBigUInt64LE(value: bigint, offset?: number): number;
+            /**
+             * @alias Buffer.writeBigUInt64LE
+             * @since v14.10.0, v12.19.0
+             */
+            writeBigUint64LE(value: bigint, offset?: number): number;
+            /**
+             * Writes `byteLength` bytes of `value` to `buf` at the specified `offset`as little-endian. Supports up to 48 bits of accuracy. Behavior is undefined
+             * when `value` is anything other than an unsigned integer.
+             *
+             * This function is also available under the `writeUintLE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(6);
+             *
+             * buf.writeUIntLE(0x1234567890ab, 0, 6);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer ab 90 78 56 34 12>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param offset Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - byteLength`.
+             * @param byteLength Number of bytes to write. Must satisfy `0 < byteLength <= 6`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeUIntLE(value: number, offset: number, byteLength: number): number;
+            /**
+             * @alias Buffer.writeUIntLE
+             * @since v14.9.0, v12.19.0
+             */
+            writeUintLE(value: number, offset: number, byteLength: number): number;
+            /**
+             * Writes `byteLength` bytes of `value` to `buf` at the specified `offset`as big-endian. Supports up to 48 bits of accuracy. Behavior is undefined
+             * when `value` is anything other than an unsigned integer.
+             *
+             * This function is also available under the `writeUintBE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(6);
+             *
+             * buf.writeUIntBE(0x1234567890ab, 0, 6);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 12 34 56 78 90 ab>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param offset Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - byteLength`.
+             * @param byteLength Number of bytes to write. Must satisfy `0 < byteLength <= 6`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeUIntBE(value: number, offset: number, byteLength: number): number;
+            /**
+             * @alias Buffer.writeUIntBE
+             * @since v14.9.0, v12.19.0
+             */
+            writeUintBE(value: number, offset: number, byteLength: number): number;
+            /**
+             * Writes `byteLength` bytes of `value` to `buf` at the specified `offset`as little-endian. Supports up to 48 bits of accuracy. Behavior is undefined
+             * when `value` is anything other than a signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(6);
+             *
+             * buf.writeIntLE(0x1234567890ab, 0, 6);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer ab 90 78 56 34 12>
+             * ```
+             * @since v0.11.15
+             * @param value Number to be written to `buf`.
+             * @param offset Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - byteLength`.
+             * @param byteLength Number of bytes to write. Must satisfy `0 < byteLength <= 6`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeIntLE(value: number, offset: number, byteLength: number): number;
+            /**
+             * Writes `byteLength` bytes of `value` to `buf` at the specified `offset`as big-endian. Supports up to 48 bits of accuracy. Behavior is undefined when`value` is anything other than a
+             * signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(6);
+             *
+             * buf.writeIntBE(0x1234567890ab, 0, 6);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 12 34 56 78 90 ab>
+             * ```
+             * @since v0.11.15
+             * @param value Number to be written to `buf`.
+             * @param offset Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - byteLength`.
+             * @param byteLength Number of bytes to write. Must satisfy `0 < byteLength <= 6`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeIntBE(value: number, offset: number, byteLength: number): number;
+            /**
+             * Reads an unsigned, big-endian 64-bit integer from `buf` at the specified`offset`.
+             *
+             * This function is also available under the `readBigUint64BE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff]);
+             *
+             * console.log(buf.readBigUInt64BE(0));
+             * // Prints: 4294967295n
+             * ```
+             * @since v12.0.0, v10.20.0
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy: `0 <= offset <= buf.length - 8`.
+             */
+            readBigUInt64BE(offset?: number): bigint;
+            /**
+             * @alias Buffer.readBigUInt64BE
+             * @since v14.10.0, v12.19.0
+             */
+            readBigUint64BE(offset?: number): bigint;
+            /**
+             * Reads an unsigned, little-endian 64-bit integer from `buf` at the specified`offset`.
+             *
+             * This function is also available under the `readBigUint64LE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff]);
+             *
+             * console.log(buf.readBigUInt64LE(0));
+             * // Prints: 18446744069414584320n
+             * ```
+             * @since v12.0.0, v10.20.0
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy: `0 <= offset <= buf.length - 8`.
+             */
+            readBigUInt64LE(offset?: number): bigint;
+            /**
+             * @alias Buffer.readBigUInt64LE
+             * @since v14.10.0, v12.19.0
+             */
+            readBigUint64LE(offset?: number): bigint;
+            /**
+             * Reads a signed, big-endian 64-bit integer from `buf` at the specified `offset`.
+             *
+             * Integers read from a `Buffer` are interpreted as two's complement signed
+             * values.
+             * @since v12.0.0, v10.20.0
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy: `0 <= offset <= buf.length - 8`.
+             */
+            readBigInt64BE(offset?: number): bigint;
+            /**
+             * Reads a signed, little-endian 64-bit integer from `buf` at the specified`offset`.
+             *
+             * Integers read from a `Buffer` are interpreted as two's complement signed
+             * values.
+             * @since v12.0.0, v10.20.0
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy: `0 <= offset <= buf.length - 8`.
+             */
+            readBigInt64LE(offset?: number): bigint;
+            /**
+             * Reads `byteLength` number of bytes from `buf` at the specified `offset`and interprets the result as an unsigned, little-endian integer supporting
+             * up to 48 bits of accuracy.
+             *
+             * This function is also available under the `readUintLE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x12, 0x34, 0x56, 0x78, 0x90, 0xab]);
+             *
+             * console.log(buf.readUIntLE(0, 6).toString(16));
+             * // Prints: ab9078563412
+             * ```
+             * @since v0.11.15
+             * @param offset Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - byteLength`.
+             * @param byteLength Number of bytes to read. Must satisfy `0 < byteLength <= 6`.
+             */
+            readUIntLE(offset: number, byteLength: number): number;
+            /**
+             * @alias Buffer.readUIntLE
+             * @since v14.9.0, v12.19.0
+             */
+            readUintLE(offset: number, byteLength: number): number;
+            /**
+             * Reads `byteLength` number of bytes from `buf` at the specified `offset`and interprets the result as an unsigned big-endian integer supporting
+             * up to 48 bits of accuracy.
+             *
+             * This function is also available under the `readUintBE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x12, 0x34, 0x56, 0x78, 0x90, 0xab]);
+             *
+             * console.log(buf.readUIntBE(0, 6).toString(16));
+             * // Prints: 1234567890ab
+             * console.log(buf.readUIntBE(1, 6).toString(16));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.11.15
+             * @param offset Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - byteLength`.
+             * @param byteLength Number of bytes to read. Must satisfy `0 < byteLength <= 6`.
+             */
+            readUIntBE(offset: number, byteLength: number): number;
+            /**
+             * @alias Buffer.readUIntBE
+             * @since v14.9.0, v12.19.0
+             */
+            readUintBE(offset: number, byteLength: number): number;
+            /**
+             * Reads `byteLength` number of bytes from `buf` at the specified `offset`and interprets the result as a little-endian, two's complement signed value
+             * supporting up to 48 bits of accuracy.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x12, 0x34, 0x56, 0x78, 0x90, 0xab]);
+             *
+             * console.log(buf.readIntLE(0, 6).toString(16));
+             * // Prints: -546f87a9cbee
+             * ```
+             * @since v0.11.15
+             * @param offset Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - byteLength`.
+             * @param byteLength Number of bytes to read. Must satisfy `0 < byteLength <= 6`.
+             */
+            readIntLE(offset: number, byteLength: number): number;
+            /**
+             * Reads `byteLength` number of bytes from `buf` at the specified `offset`and interprets the result as a big-endian, two's complement signed value
+             * supporting up to 48 bits of accuracy.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x12, 0x34, 0x56, 0x78, 0x90, 0xab]);
+             *
+             * console.log(buf.readIntBE(0, 6).toString(16));
+             * // Prints: 1234567890ab
+             * console.log(buf.readIntBE(1, 6).toString(16));
+             * // Throws ERR_OUT_OF_RANGE.
+             * console.log(buf.readIntBE(1, 0).toString(16));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.11.15
+             * @param offset Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - byteLength`.
+             * @param byteLength Number of bytes to read. Must satisfy `0 < byteLength <= 6`.
+             */
+            readIntBE(offset: number, byteLength: number): number;
+            /**
+             * Reads an unsigned 8-bit integer from `buf` at the specified `offset`.
+             *
+             * This function is also available under the `readUint8` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([1, -2]);
+             *
+             * console.log(buf.readUInt8(0));
+             * // Prints: 1
+             * console.log(buf.readUInt8(1));
+             * // Prints: 254
+             * console.log(buf.readUInt8(2));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.5.0
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 1`.
+             */
+            readUInt8(offset?: number): number;
+            /**
+             * @alias Buffer.readUInt8
+             * @since v14.9.0, v12.19.0
+             */
+            readUint8(offset?: number): number;
+            /**
+             * Reads an unsigned, little-endian 16-bit integer from `buf` at the specified`offset`.
+             *
+             * This function is also available under the `readUint16LE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x12, 0x34, 0x56]);
+             *
+             * console.log(buf.readUInt16LE(0).toString(16));
+             * // Prints: 3412
+             * console.log(buf.readUInt16LE(1).toString(16));
+             * // Prints: 5634
+             * console.log(buf.readUInt16LE(2).toString(16));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.5.5
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 2`.
+             */
+            readUInt16LE(offset?: number): number;
+            /**
+             * @alias Buffer.readUInt16LE
+             * @since v14.9.0, v12.19.0
+             */
+            readUint16LE(offset?: number): number;
+            /**
+             * Reads an unsigned, big-endian 16-bit integer from `buf` at the specified`offset`.
+             *
+             * This function is also available under the `readUint16BE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x12, 0x34, 0x56]);
+             *
+             * console.log(buf.readUInt16BE(0).toString(16));
+             * // Prints: 1234
+             * console.log(buf.readUInt16BE(1).toString(16));
+             * // Prints: 3456
+             * ```
+             * @since v0.5.5
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 2`.
+             */
+            readUInt16BE(offset?: number): number;
+            /**
+             * @alias Buffer.readUInt16BE
+             * @since v14.9.0, v12.19.0
+             */
+            readUint16BE(offset?: number): number;
+            /**
+             * Reads an unsigned, little-endian 32-bit integer from `buf` at the specified`offset`.
+             *
+             * This function is also available under the `readUint32LE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x12, 0x34, 0x56, 0x78]);
+             *
+             * console.log(buf.readUInt32LE(0).toString(16));
+             * // Prints: 78563412
+             * console.log(buf.readUInt32LE(1).toString(16));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.5.5
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 4`.
+             */
+            readUInt32LE(offset?: number): number;
+            /**
+             * @alias Buffer.readUInt32LE
+             * @since v14.9.0, v12.19.0
+             */
+            readUint32LE(offset?: number): number;
+            /**
+             * Reads an unsigned, big-endian 32-bit integer from `buf` at the specified`offset`.
+             *
+             * This function is also available under the `readUint32BE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x12, 0x34, 0x56, 0x78]);
+             *
+             * console.log(buf.readUInt32BE(0).toString(16));
+             * // Prints: 12345678
+             * ```
+             * @since v0.5.5
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 4`.
+             */
+            readUInt32BE(offset?: number): number;
+            /**
+             * @alias Buffer.readUInt32BE
+             * @since v14.9.0, v12.19.0
+             */
+            readUint32BE(offset?: number): number;
+            /**
+             * Reads a signed 8-bit integer from `buf` at the specified `offset`.
+             *
+             * Integers read from a `Buffer` are interpreted as two's complement signed values.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([-1, 5]);
+             *
+             * console.log(buf.readInt8(0));
+             * // Prints: -1
+             * console.log(buf.readInt8(1));
+             * // Prints: 5
+             * console.log(buf.readInt8(2));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.5.0
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 1`.
+             */
+            readInt8(offset?: number): number;
+            /**
+             * Reads a signed, little-endian 16-bit integer from `buf` at the specified`offset`.
+             *
+             * Integers read from a `Buffer` are interpreted as two's complement signed values.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0, 5]);
+             *
+             * console.log(buf.readInt16LE(0));
+             * // Prints: 1280
+             * console.log(buf.readInt16LE(1));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.5.5
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 2`.
+             */
+            readInt16LE(offset?: number): number;
+            /**
+             * Reads a signed, big-endian 16-bit integer from `buf` at the specified `offset`.
+             *
+             * Integers read from a `Buffer` are interpreted as two's complement signed values.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0, 5]);
+             *
+             * console.log(buf.readInt16BE(0));
+             * // Prints: 5
+             * ```
+             * @since v0.5.5
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 2`.
+             */
+            readInt16BE(offset?: number): number;
+            /**
+             * Reads a signed, little-endian 32-bit integer from `buf` at the specified`offset`.
+             *
+             * Integers read from a `Buffer` are interpreted as two's complement signed values.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0, 0, 0, 5]);
+             *
+             * console.log(buf.readInt32LE(0));
+             * // Prints: 83886080
+             * console.log(buf.readInt32LE(1));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.5.5
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 4`.
+             */
+            readInt32LE(offset?: number): number;
+            /**
+             * Reads a signed, big-endian 32-bit integer from `buf` at the specified `offset`.
+             *
+             * Integers read from a `Buffer` are interpreted as two's complement signed values.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0, 0, 0, 5]);
+             *
+             * console.log(buf.readInt32BE(0));
+             * // Prints: 5
+             * ```
+             * @since v0.5.5
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 4`.
+             */
+            readInt32BE(offset?: number): number;
+            /**
+             * Reads a 32-bit, little-endian float from `buf` at the specified `offset`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([1, 2, 3, 4]);
+             *
+             * console.log(buf.readFloatLE(0));
+             * // Prints: 1.539989614439558e-36
+             * console.log(buf.readFloatLE(1));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.11.15
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 4`.
+             */
+            readFloatLE(offset?: number): number;
+            /**
+             * Reads a 32-bit, big-endian float from `buf` at the specified `offset`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([1, 2, 3, 4]);
+             *
+             * console.log(buf.readFloatBE(0));
+             * // Prints: 2.387939260590663e-38
+             * ```
+             * @since v0.11.15
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 4`.
+             */
+            readFloatBE(offset?: number): number;
+            /**
+             * Reads a 64-bit, little-endian double from `buf` at the specified `offset`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([1, 2, 3, 4, 5, 6, 7, 8]);
+             *
+             * console.log(buf.readDoubleLE(0));
+             * // Prints: 5.447603722011605e-270
+             * console.log(buf.readDoubleLE(1));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.11.15
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 8`.
+             */
+            readDoubleLE(offset?: number): number;
+            /**
+             * Reads a 64-bit, big-endian double from `buf` at the specified `offset`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([1, 2, 3, 4, 5, 6, 7, 8]);
+             *
+             * console.log(buf.readDoubleBE(0));
+             * // Prints: 8.20788039913184e-304
+             * ```
+             * @since v0.11.15
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 8`.
+             */
+            readDoubleBE(offset?: number): number;
+            reverse(): this;
+            /**
+             * Interprets `buf` as an array of unsigned 16-bit integers and swaps the
+             * byte order _in-place_. Throws `ERR_INVALID_BUFFER_SIZE` if `buf.length` is not a multiple of 2.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf1 = Buffer.from([0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8]);
+             *
+             * console.log(buf1);
+             * // Prints: <Buffer 01 02 03 04 05 06 07 08>
+             *
+             * buf1.swap16();
+             *
+             * console.log(buf1);
+             * // Prints: <Buffer 02 01 04 03 06 05 08 07>
+             *
+             * const buf2 = Buffer.from([0x1, 0x2, 0x3]);
+             *
+             * buf2.swap16();
+             * // Throws ERR_INVALID_BUFFER_SIZE.
+             * ```
+             *
+             * One convenient use of `buf.swap16()` is to perform a fast in-place conversion
+             * between UTF-16 little-endian and UTF-16 big-endian:
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from('This is little-endian UTF-16', 'utf16le');
+             * buf.swap16(); // Convert to big-endian UTF-16 text.
+             * ```
+             * @since v5.10.0
+             * @return A reference to `buf`.
+             */
+            swap16(): Buffer;
+            /**
+             * Interprets `buf` as an array of unsigned 32-bit integers and swaps the
+             * byte order _in-place_. Throws `ERR_INVALID_BUFFER_SIZE` if `buf.length` is not a multiple of 4.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf1 = Buffer.from([0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8]);
+             *
+             * console.log(buf1);
+             * // Prints: <Buffer 01 02 03 04 05 06 07 08>
+             *
+             * buf1.swap32();
+             *
+             * console.log(buf1);
+             * // Prints: <Buffer 04 03 02 01 08 07 06 05>
+             *
+             * const buf2 = Buffer.from([0x1, 0x2, 0x3]);
+             *
+             * buf2.swap32();
+             * // Throws ERR_INVALID_BUFFER_SIZE.
+             * ```
+             * @since v5.10.0
+             * @return A reference to `buf`.
+             */
+            swap32(): Buffer;
+            /**
+             * Interprets `buf` as an array of 64-bit numbers and swaps byte order _in-place_.
+             * Throws `ERR_INVALID_BUFFER_SIZE` if `buf.length` is not a multiple of 8.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf1 = Buffer.from([0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8]);
+             *
+             * console.log(buf1);
+             * // Prints: <Buffer 01 02 03 04 05 06 07 08>
+             *
+             * buf1.swap64();
+             *
+             * console.log(buf1);
+             * // Prints: <Buffer 08 07 06 05 04 03 02 01>
+             *
+             * const buf2 = Buffer.from([0x1, 0x2, 0x3]);
+             *
+             * buf2.swap64();
+             * // Throws ERR_INVALID_BUFFER_SIZE.
+             * ```
+             * @since v6.3.0
+             * @return A reference to `buf`.
+             */
+            swap64(): Buffer;
+            /**
+             * Writes `value` to `buf` at the specified `offset`. `value` must be a
+             * valid unsigned 8-bit integer. Behavior is undefined when `value` is anything
+             * other than an unsigned 8-bit integer.
+             *
+             * This function is also available under the `writeUint8` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeUInt8(0x3, 0);
+             * buf.writeUInt8(0x4, 1);
+             * buf.writeUInt8(0x23, 2);
+             * buf.writeUInt8(0x42, 3);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 03 04 23 42>
+             * ```
+             * @since v0.5.0
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 1`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeUInt8(value: number, offset?: number): number;
+            /**
+             * @alias Buffer.writeUInt8
+             * @since v14.9.0, v12.19.0
+             */
+            writeUint8(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as little-endian. The `value`must be a valid unsigned 16-bit integer. Behavior is undefined when `value` is
+             * anything other than an unsigned 16-bit integer.
+             *
+             * This function is also available under the `writeUint16LE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeUInt16LE(0xdead, 0);
+             * buf.writeUInt16LE(0xbeef, 2);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer ad de ef be>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 2`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeUInt16LE(value: number, offset?: number): number;
+            /**
+             * @alias Buffer.writeUInt16LE
+             * @since v14.9.0, v12.19.0
+             */
+            writeUint16LE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as big-endian. The `value`must be a valid unsigned 16-bit integer. Behavior is undefined when `value`is anything other than an
+             * unsigned 16-bit integer.
+             *
+             * This function is also available under the `writeUint16BE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeUInt16BE(0xdead, 0);
+             * buf.writeUInt16BE(0xbeef, 2);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer de ad be ef>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 2`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeUInt16BE(value: number, offset?: number): number;
+            /**
+             * @alias Buffer.writeUInt16BE
+             * @since v14.9.0, v12.19.0
+             */
+            writeUint16BE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as little-endian. The `value`must be a valid unsigned 32-bit integer. Behavior is undefined when `value` is
+             * anything other than an unsigned 32-bit integer.
+             *
+             * This function is also available under the `writeUint32LE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeUInt32LE(0xfeedface, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer ce fa ed fe>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 4`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeUInt32LE(value: number, offset?: number): number;
+            /**
+             * @alias Buffer.writeUInt32LE
+             * @since v14.9.0, v12.19.0
+             */
+            writeUint32LE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as big-endian. The `value`must be a valid unsigned 32-bit integer. Behavior is undefined when `value`is anything other than an
+             * unsigned 32-bit integer.
+             *
+             * This function is also available under the `writeUint32BE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeUInt32BE(0xfeedface, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer fe ed fa ce>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 4`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeUInt32BE(value: number, offset?: number): number;
+            /**
+             * @alias Buffer.writeUInt32BE
+             * @since v14.9.0, v12.19.0
+             */
+            writeUint32BE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset`. `value` must be a valid
+             * signed 8-bit integer. Behavior is undefined when `value` is anything other than
+             * a signed 8-bit integer.
+             *
+             * `value` is interpreted and written as a two's complement signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(2);
+             *
+             * buf.writeInt8(2, 0);
+             * buf.writeInt8(-2, 1);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 02 fe>
+             * ```
+             * @since v0.5.0
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 1`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeInt8(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as little-endian.  The `value`must be a valid signed 16-bit integer. Behavior is undefined when `value` is
+             * anything other than a signed 16-bit integer.
+             *
+             * The `value` is interpreted and written as a two's complement signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(2);
+             *
+             * buf.writeInt16LE(0x0304, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 04 03>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 2`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeInt16LE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as big-endian.  The `value`must be a valid signed 16-bit integer. Behavior is undefined when `value` is
+             * anything other than a signed 16-bit integer.
+             *
+             * The `value` is interpreted and written as a two's complement signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(2);
+             *
+             * buf.writeInt16BE(0x0102, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 01 02>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 2`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeInt16BE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as little-endian. The `value`must be a valid signed 32-bit integer. Behavior is undefined when `value` is
+             * anything other than a signed 32-bit integer.
+             *
+             * The `value` is interpreted and written as a two's complement signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeInt32LE(0x05060708, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 08 07 06 05>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 4`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeInt32LE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as big-endian. The `value`must be a valid signed 32-bit integer. Behavior is undefined when `value` is
+             * anything other than a signed 32-bit integer.
+             *
+             * The `value` is interpreted and written as a two's complement signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeInt32BE(0x01020304, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 01 02 03 04>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 4`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeInt32BE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as little-endian. Behavior is
+             * undefined when `value` is anything other than a JavaScript number.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeFloatLE(0xcafebabe, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer bb fe 4a 4f>
+             * ```
+             * @since v0.11.15
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 4`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeFloatLE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as big-endian. Behavior is
+             * undefined when `value` is anything other than a JavaScript number.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeFloatBE(0xcafebabe, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 4f 4a fe bb>
+             * ```
+             * @since v0.11.15
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 4`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeFloatBE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as little-endian. The `value`must be a JavaScript number. Behavior is undefined when `value` is anything
+             * other than a JavaScript number.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(8);
+             *
+             * buf.writeDoubleLE(123.456, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 77 be 9f 1a 2f dd 5e 40>
+             * ```
+             * @since v0.11.15
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 8`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeDoubleLE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as big-endian. The `value`must be a JavaScript number. Behavior is undefined when `value` is anything
+             * other than a JavaScript number.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(8);
+             *
+             * buf.writeDoubleBE(123.456, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 40 5e dd 2f 1a 9f be 77>
+             * ```
+             * @since v0.11.15
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 8`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeDoubleBE(value: number, offset?: number): number;
+            /**
+             * Fills `buf` with the specified `value`. If the `offset` and `end` are not given,
+             * the entire `buf` will be filled:
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Fill a `Buffer` with the ASCII character 'h'.
+             *
+             * const b = Buffer.allocUnsafe(50).fill('h');
+             *
+             * console.log(b.toString());
+             * // Prints: hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
+             * ```
+             *
+             * `value` is coerced to a `uint32` value if it is not a string, `Buffer`, or
+             * integer. If the resulting integer is greater than `255` (decimal), `buf` will be
+             * filled with `value &#x26; 255`.
+             *
+             * If the final write of a `fill()` operation falls on a multi-byte character,
+             * then only the bytes of that character that fit into `buf` are written:
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Fill a `Buffer` with character that takes up two bytes in UTF-8.
+             *
+             * console.log(Buffer.allocUnsafe(5).fill('\u0222'));
+             * // Prints: <Buffer c8 a2 c8 a2 c8>
+             * ```
+             *
+             * If `value` contains invalid characters, it is truncated; if no valid
+             * fill data remains, an exception is thrown:
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(5);
+             *
+             * console.log(buf.fill('a'));
+             * // Prints: <Buffer 61 61 61 61 61>
+             * console.log(buf.fill('aazz', 'hex'));
+             * // Prints: <Buffer aa aa aa aa aa>
+             * console.log(buf.fill('zz', 'hex'));
+             * // Throws an exception.
+             * ```
+             * @since v0.5.0
+             * @param value The value with which to fill `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to fill `buf`.
+             * @param [end=buf.length] Where to stop filling `buf` (not inclusive).
+             * @param [encoding='utf8'] The encoding for `value` if `value` is a string.
+             * @return A reference to `buf`.
+             */
+            fill(value: string | Uint8Array | number, offset?: number, end?: number, encoding?: BufferEncoding): this;
+            /**
+             * If `value` is:
+             *
+             * * a string, `value` is interpreted according to the character encoding in`encoding`.
+             * * a `Buffer` or [`Uint8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array), `value` will be used in its entirety.
+             * To compare a partial `Buffer`, use `buf.subarray`.
+             * * a number, `value` will be interpreted as an unsigned 8-bit integer
+             * value between `0` and `255`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from('this is a buffer');
+             *
+             * console.log(buf.indexOf('this'));
+             * // Prints: 0
+             * console.log(buf.indexOf('is'));
+             * // Prints: 2
+             * console.log(buf.indexOf(Buffer.from('a buffer')));
+             * // Prints: 8
+             * console.log(buf.indexOf(97));
+             * // Prints: 8 (97 is the decimal ASCII value for 'a')
+             * console.log(buf.indexOf(Buffer.from('a buffer example')));
+             * // Prints: -1
+             * console.log(buf.indexOf(Buffer.from('a buffer example').slice(0, 8)));
+             * // Prints: 8
+             *
+             * const utf16Buffer = Buffer.from('\u039a\u0391\u03a3\u03a3\u0395', 'utf16le');
+             *
+             * console.log(utf16Buffer.indexOf('\u03a3', 0, 'utf16le'));
+             * // Prints: 4
+             * console.log(utf16Buffer.indexOf('\u03a3', -4, 'utf16le'));
+             * // Prints: 6
+             * ```
+             *
+             * If `value` is not a string, number, or `Buffer`, this method will throw a`TypeError`. If `value` is a number, it will be coerced to a valid byte value,
+             * an integer between 0 and 255.
+             *
+             * If `byteOffset` is not a number, it will be coerced to a number. If the result
+             * of coercion is `NaN` or `0`, then the entire buffer will be searched. This
+             * behavior matches [`String.prototype.indexOf()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/indexOf).
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const b = Buffer.from('abcdef');
+             *
+             * // Passing a value that's a number, but not a valid byte.
+             * // Prints: 2, equivalent to searching for 99 or 'c'.
+             * console.log(b.indexOf(99.9));
+             * console.log(b.indexOf(256 + 99));
+             *
+             * // Passing a byteOffset that coerces to NaN or 0.
+             * // Prints: 1, searching the whole buffer.
+             * console.log(b.indexOf('b', undefined));
+             * console.log(b.indexOf('b', {}));
+             * console.log(b.indexOf('b', null));
+             * console.log(b.indexOf('b', []));
+             * ```
+             *
+             * If `value` is an empty string or empty `Buffer` and `byteOffset` is less
+             * than `buf.length`, `byteOffset` will be returned. If `value` is empty and`byteOffset` is at least `buf.length`, `buf.length` will be returned.
+             * @since v1.5.0
+             * @param value What to search for.
+             * @param [byteOffset=0] Where to begin searching in `buf`. If negative, then offset is calculated from the end of `buf`.
+             * @param [encoding='utf8'] If `value` is a string, this is the encoding used to determine the binary representation of the string that will be searched for in `buf`.
+             * @return The index of the first occurrence of `value` in `buf`, or `-1` if `buf` does not contain `value`.
+             */
+            indexOf(value: string | number | Uint8Array, byteOffset?: number, encoding?: BufferEncoding): number;
+            /**
+             * Identical to `buf.indexOf()`, except the last occurrence of `value` is found
+             * rather than the first occurrence.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from('this buffer is a buffer');
+             *
+             * console.log(buf.lastIndexOf('this'));
+             * // Prints: 0
+             * console.log(buf.lastIndexOf('buffer'));
+             * // Prints: 17
+             * console.log(buf.lastIndexOf(Buffer.from('buffer')));
+             * // Prints: 17
+             * console.log(buf.lastIndexOf(97));
+             * // Prints: 15 (97 is the decimal ASCII value for 'a')
+             * console.log(buf.lastIndexOf(Buffer.from('yolo')));
+             * // Prints: -1
+             * console.log(buf.lastIndexOf('buffer', 5));
+             * // Prints: 5
+             * console.log(buf.lastIndexOf('buffer', 4));
+             * // Prints: -1
+             *
+             * const utf16Buffer = Buffer.from('\u039a\u0391\u03a3\u03a3\u0395', 'utf16le');
+             *
+             * console.log(utf16Buffer.lastIndexOf('\u03a3', undefined, 'utf16le'));
+             * // Prints: 6
+             * console.log(utf16Buffer.lastIndexOf('\u03a3', -5, 'utf16le'));
+             * // Prints: 4
+             * ```
+             *
+             * If `value` is not a string, number, or `Buffer`, this method will throw a`TypeError`. If `value` is a number, it will be coerced to a valid byte value,
+             * an integer between 0 and 255.
+             *
+             * If `byteOffset` is not a number, it will be coerced to a number. Any arguments
+             * that coerce to `NaN`, like `{}` or `undefined`, will search the whole buffer.
+             * This behavior matches [`String.prototype.lastIndexOf()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/lastIndexOf).
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const b = Buffer.from('abcdef');
+             *
+             * // Passing a value that's a number, but not a valid byte.
+             * // Prints: 2, equivalent to searching for 99 or 'c'.
+             * console.log(b.lastIndexOf(99.9));
+             * console.log(b.lastIndexOf(256 + 99));
+             *
+             * // Passing a byteOffset that coerces to NaN.
+             * // Prints: 1, searching the whole buffer.
+             * console.log(b.lastIndexOf('b', undefined));
+             * console.log(b.lastIndexOf('b', {}));
+             *
+             * // Passing a byteOffset that coerces to 0.
+             * // Prints: -1, equivalent to passing 0.
+             * console.log(b.lastIndexOf('b', null));
+             * console.log(b.lastIndexOf('b', []));
+             * ```
+             *
+             * If `value` is an empty string or empty `Buffer`, `byteOffset` will be returned.
+             * @since v6.0.0
+             * @param value What to search for.
+             * @param [byteOffset=buf.length - 1] Where to begin searching in `buf`. If negative, then offset is calculated from the end of `buf`.
+             * @param [encoding='utf8'] If `value` is a string, this is the encoding used to determine the binary representation of the string that will be searched for in `buf`.
+             * @return The index of the last occurrence of `value` in `buf`, or `-1` if `buf` does not contain `value`.
+             */
+            lastIndexOf(value: string | number | Uint8Array, byteOffset?: number, encoding?: BufferEncoding): number;
+            /**
+             * Creates and returns an [iterator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols) of `[index, byte]` pairs from the contents
+             * of `buf`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Log the entire contents of a `Buffer`.
+             *
+             * const buf = Buffer.from('buffer');
+             *
+             * for (const pair of buf.entries()) {
+             *   console.log(pair);
+             * }
+             * // Prints:
+             * //   [0, 98]
+             * //   [1, 117]
+             * //   [2, 102]
+             * //   [3, 102]
+             * //   [4, 101]
+             * //   [5, 114]
+             * ```
+             * @since v1.1.0
+             */
+            entries(): IterableIterator<[number, number]>;
+            /**
+             * Equivalent to `buf.indexOf() !== -1`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from('this is a buffer');
+             *
+             * console.log(buf.includes('this'));
+             * // Prints: true
+             * console.log(buf.includes('is'));
+             * // Prints: true
+             * console.log(buf.includes(Buffer.from('a buffer')));
+             * // Prints: true
+             * console.log(buf.includes(97));
+             * // Prints: true (97 is the decimal ASCII value for 'a')
+             * console.log(buf.includes(Buffer.from('a buffer example')));
+             * // Prints: false
+             * console.log(buf.includes(Buffer.from('a buffer example').slice(0, 8)));
+             * // Prints: true
+             * console.log(buf.includes('this', 4));
+             * // Prints: false
+             * ```
+             * @since v5.3.0
+             * @param value What to search for.
+             * @param [byteOffset=0] Where to begin searching in `buf`. If negative, then offset is calculated from the end of `buf`.
+             * @param [encoding='utf8'] If `value` is a string, this is its encoding.
+             * @return `true` if `value` was found in `buf`, `false` otherwise.
+             */
+            includes(value: string | number | Buffer, byteOffset?: number, encoding?: BufferEncoding): boolean;
+            /**
+             * Creates and returns an [iterator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols) of `buf` keys (indices).
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from('buffer');
+             *
+             * for (const key of buf.keys()) {
+             *   console.log(key);
+             * }
+             * // Prints:
+             * //   0
+             * //   1
+             * //   2
+             * //   3
+             * //   4
+             * //   5
+             * ```
+             * @since v1.1.0
+             */
+            keys(): IterableIterator<number>;
+            /**
+             * Creates and returns an [iterator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols) for `buf` values (bytes). This function is
+             * called automatically when a `Buffer` is used in a `for..of` statement.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from('buffer');
+             *
+             * for (const value of buf.values()) {
+             *   console.log(value);
+             * }
+             * // Prints:
+             * //   98
+             * //   117
+             * //   102
+             * //   102
+             * //   101
+             * //   114
+             *
+             * for (const value of buf) {
+             *   console.log(value);
+             * }
+             * // Prints:
+             * //   98
+             * //   117
+             * //   102
+             * //   102
+             * //   101
+             * //   114
+             * ```
+             * @since v1.1.0
+             */
+            values(): IterableIterator<number>;
+        }
+        var Buffer: BufferConstructor;
+        /**
+         * Decodes a string of Base64-encoded data into bytes, and encodes those bytes
+         * into a string using Latin-1 (ISO-8859-1).
+         *
+         * The `data` may be any JavaScript-value that can be coerced into a string.
+         *
+         * **This function is only provided for compatibility with legacy web platform APIs**
+         * **and should never be used in new code, because they use strings to represent**
+         * **binary data and predate the introduction of typed arrays in JavaScript.**
+         * **For code running using Node.js APIs, converting between base64-encoded strings**
+         * **and binary data should be performed using `Buffer.from(str, 'base64')` and`buf.toString('base64')`.**
+         * @since v15.13.0, v14.17.0
+         * @deprecated Use `Buffer.from(data, 'base64')` instead.
+         * @param data The Base64-encoded input string.
+         */
+        function atob(data: string): string;
+        /**
+         * Decodes a string into bytes using Latin-1 (ISO-8859), and encodes those bytes
+         * into a string using Base64.
+         *
+         * The `data` may be any JavaScript-value that can be coerced into a string.
+         *
+         * **This function is only provided for compatibility with legacy web platform APIs**
+         * **and should never be used in new code, because they use strings to represent**
+         * **binary data and predate the introduction of typed arrays in JavaScript.**
+         * **For code running using Node.js APIs, converting between base64-encoded strings**
+         * **and binary data should be performed using `Buffer.from(str, 'base64')` and`buf.toString('base64')`.**
+         * @since v15.13.0, v14.17.0
+         * @deprecated Use `buf.toString('base64')` instead.
+         * @param data An ASCII (Latin1) string.
+         */
+        function btoa(data: string): string;
+    }
+}
+declare module 'node:buffer' {
+    export * from 'buffer';
+}
diff --git a/igv_component/node_modules/@types/node/child_process.d.ts b/igv_component/node_modules/@types/node/child_process.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..79c7290e0dcb90a9df8fad99ce62182587f653af
--- /dev/null
+++ b/igv_component/node_modules/@types/node/child_process.d.ts
@@ -0,0 +1,1369 @@
+/**
+ * The `child_process` module provides the ability to spawn subprocesses in
+ * a manner that is similar, but not identical, to [`popen(3)`](http://man7.org/linux/man-pages/man3/popen.3.html). This capability
+ * is primarily provided by the {@link spawn} function:
+ *
+ * ```js
+ * const { spawn } = require('child_process');
+ * const ls = spawn('ls', ['-lh', '/usr']);
+ *
+ * ls.stdout.on('data', (data) => {
+ *   console.log(`stdout: ${data}`);
+ * });
+ *
+ * ls.stderr.on('data', (data) => {
+ *   console.error(`stderr: ${data}`);
+ * });
+ *
+ * ls.on('close', (code) => {
+ *   console.log(`child process exited with code ${code}`);
+ * });
+ * ```
+ *
+ * By default, pipes for `stdin`, `stdout`, and `stderr` are established between
+ * the parent Node.js process and the spawned subprocess. These pipes have
+ * limited (and platform-specific) capacity. If the subprocess writes to
+ * stdout in excess of that limit without the output being captured, the
+ * subprocess blocks waiting for the pipe buffer to accept more data. This is
+ * identical to the behavior of pipes in the shell. Use the `{ stdio: 'ignore' }`option if the output will not be consumed.
+ *
+ * The command lookup is performed using the `options.env.PATH` environment
+ * variable if `env` is in the `options` object. Otherwise, `process.env.PATH` is
+ * used. If `options.env` is set without `PATH`, lookup on Unix is performed
+ * on a default search path search of `/usr/bin:/bin` (see your operating system's
+ * manual for execvpe/execvp), on Windows the current processes environment
+ * variable `PATH` is used.
+ *
+ * On Windows, environment variables are case-insensitive. Node.js
+ * lexicographically sorts the `env` keys and uses the first one that
+ * case-insensitively matches. Only first (in lexicographic order) entry will be
+ * passed to the subprocess. This might lead to issues on Windows when passing
+ * objects to the `env` option that have multiple variants of the same key, such as`PATH` and `Path`.
+ *
+ * The {@link spawn} method spawns the child process asynchronously,
+ * without blocking the Node.js event loop. The {@link spawnSync} function provides equivalent functionality in a synchronous manner that blocks
+ * the event loop until the spawned process either exits or is terminated.
+ *
+ * For convenience, the `child_process` module provides a handful of synchronous
+ * and asynchronous alternatives to {@link spawn} and {@link spawnSync}. Each of these alternatives are implemented on
+ * top of {@link spawn} or {@link spawnSync}.
+ *
+ * * {@link exec}: spawns a shell and runs a command within that
+ * shell, passing the `stdout` and `stderr` to a callback function when
+ * complete.
+ * * {@link execFile}: similar to {@link exec} except
+ * that it spawns the command directly without first spawning a shell by
+ * default.
+ * * {@link fork}: spawns a new Node.js process and invokes a
+ * specified module with an IPC communication channel established that allows
+ * sending messages between parent and child.
+ * * {@link execSync}: a synchronous version of {@link exec} that will block the Node.js event loop.
+ * * {@link execFileSync}: a synchronous version of {@link execFile} that will block the Node.js event loop.
+ *
+ * For certain use cases, such as automating shell scripts, the `synchronous counterparts` may be more convenient. In many cases, however,
+ * the synchronous methods can have significant impact on performance due to
+ * stalling the event loop while spawned processes complete.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/child_process.js)
+ */
+declare module 'child_process' {
+    import { ObjectEncodingOptions } from 'node:fs';
+    import { EventEmitter, Abortable } from 'node:events';
+    import * as net from 'node:net';
+    import { Writable, Readable, Stream, Pipe } from 'node:stream';
+    import { URL } from 'node:url';
+    type Serializable = string | object | number | boolean | bigint;
+    type SendHandle = net.Socket | net.Server;
+    /**
+     * Instances of the `ChildProcess` represent spawned child processes.
+     *
+     * Instances of `ChildProcess` are not intended to be created directly. Rather,
+     * use the {@link spawn}, {@link exec},{@link execFile}, or {@link fork} methods to create
+     * instances of `ChildProcess`.
+     * @since v2.2.0
+     */
+    class ChildProcess extends EventEmitter {
+        /**
+         * A `Writable Stream` that represents the child process's `stdin`.
+         *
+         * If a child process waits to read all of its input, the child will not continue
+         * until this stream has been closed via `end()`.
+         *
+         * If the child was spawned with `stdio[0]` set to anything other than `'pipe'`,
+         * then this will be `null`.
+         *
+         * `subprocess.stdin` is an alias for `subprocess.stdio[0]`. Both properties will
+         * refer to the same value.
+         *
+         * The `subprocess.stdin` property can be `undefined` if the child process could
+         * not be successfully spawned.
+         * @since v0.1.90
+         */
+        stdin: Writable | null;
+        /**
+         * A `Readable Stream` that represents the child process's `stdout`.
+         *
+         * If the child was spawned with `stdio[1]` set to anything other than `'pipe'`,
+         * then this will be `null`.
+         *
+         * `subprocess.stdout` is an alias for `subprocess.stdio[1]`. Both properties will
+         * refer to the same value.
+         *
+         * ```js
+         * const { spawn } = require('child_process');
+         *
+         * const subprocess = spawn('ls');
+         *
+         * subprocess.stdout.on('data', (data) => {
+         *   console.log(`Received chunk ${data}`);
+         * });
+         * ```
+         *
+         * The `subprocess.stdout` property can be `null` if the child process could
+         * not be successfully spawned.
+         * @since v0.1.90
+         */
+        stdout: Readable | null;
+        /**
+         * A `Readable Stream` that represents the child process's `stderr`.
+         *
+         * If the child was spawned with `stdio[2]` set to anything other than `'pipe'`,
+         * then this will be `null`.
+         *
+         * `subprocess.stderr` is an alias for `subprocess.stdio[2]`. Both properties will
+         * refer to the same value.
+         *
+         * The `subprocess.stderr` property can be `null` if the child process could
+         * not be successfully spawned.
+         * @since v0.1.90
+         */
+        stderr: Readable | null;
+        /**
+         * The `subprocess.channel` property is a reference to the child's IPC channel. If
+         * no IPC channel currently exists, this property is `undefined`.
+         * @since v7.1.0
+         */
+        readonly channel?: Pipe | null | undefined;
+        /**
+         * A sparse array of pipes to the child process, corresponding with positions in
+         * the `stdio` option passed to {@link spawn} that have been set
+         * to the value `'pipe'`. `subprocess.stdio[0]`, `subprocess.stdio[1]`, and`subprocess.stdio[2]` are also available as `subprocess.stdin`,`subprocess.stdout`, and `subprocess.stderr`,
+         * respectively.
+         *
+         * In the following example, only the child's fd `1` (stdout) is configured as a
+         * pipe, so only the parent's `subprocess.stdio[1]` is a stream, all other values
+         * in the array are `null`.
+         *
+         * ```js
+         * const assert = require('assert');
+         * const fs = require('fs');
+         * const child_process = require('child_process');
+         *
+         * const subprocess = child_process.spawn('ls', {
+         *   stdio: [
+         *     0, // Use parent's stdin for child.
+         *     'pipe', // Pipe child's stdout to parent.
+         *     fs.openSync('err.out', 'w'), // Direct child's stderr to a file.
+         *   ]
+         * });
+         *
+         * assert.strictEqual(subprocess.stdio[0], null);
+         * assert.strictEqual(subprocess.stdio[0], subprocess.stdin);
+         *
+         * assert(subprocess.stdout);
+         * assert.strictEqual(subprocess.stdio[1], subprocess.stdout);
+         *
+         * assert.strictEqual(subprocess.stdio[2], null);
+         * assert.strictEqual(subprocess.stdio[2], subprocess.stderr);
+         * ```
+         *
+         * The `subprocess.stdio` property can be `undefined` if the child process could
+         * not be successfully spawned.
+         * @since v0.7.10
+         */
+        readonly stdio: [
+            Writable | null,
+            // stdin
+            Readable | null,
+            // stdout
+            Readable | null,
+            // stderr
+            Readable | Writable | null | undefined,
+            // extra
+            Readable | Writable | null | undefined // extra
+        ];
+        /**
+         * The `subprocess.killed` property indicates whether the child process
+         * successfully received a signal from `subprocess.kill()`. The `killed` property
+         * does not indicate that the child process has been terminated.
+         * @since v0.5.10
+         */
+        readonly killed: boolean;
+        /**
+         * Returns the process identifier (PID) of the child process. If the child process
+         * fails to spawn due to errors, then the value is `undefined` and `error` is
+         * emitted.
+         *
+         * ```js
+         * const { spawn } = require('child_process');
+         * const grep = spawn('grep', ['ssh']);
+         *
+         * console.log(`Spawned child pid: ${grep.pid}`);
+         * grep.stdin.end();
+         * ```
+         * @since v0.1.90
+         */
+        readonly pid?: number | undefined;
+        /**
+         * The `subprocess.connected` property indicates whether it is still possible to
+         * send and receive messages from a child process. When `subprocess.connected` is`false`, it is no longer possible to send or receive messages.
+         * @since v0.7.2
+         */
+        readonly connected: boolean;
+        /**
+         * The `subprocess.exitCode` property indicates the exit code of the child process.
+         * If the child process is still running, the field will be `null`.
+         */
+        readonly exitCode: number | null;
+        /**
+         * The `subprocess.signalCode` property indicates the signal received by
+         * the child process if any, else `null`.
+         */
+        readonly signalCode: NodeJS.Signals | null;
+        /**
+         * The `subprocess.spawnargs` property represents the full list of command-line
+         * arguments the child process was launched with.
+         */
+        readonly spawnargs: string[];
+        /**
+         * The `subprocess.spawnfile` property indicates the executable file name of
+         * the child process that is launched.
+         *
+         * For {@link fork}, its value will be equal to `process.execPath`.
+         * For {@link spawn}, its value will be the name of
+         * the executable file.
+         * For {@link exec},  its value will be the name of the shell
+         * in which the child process is launched.
+         */
+        readonly spawnfile: string;
+        /**
+         * The `subprocess.kill()` method sends a signal to the child process. If no
+         * argument is given, the process will be sent the `'SIGTERM'` signal. See [`signal(7)`](http://man7.org/linux/man-pages/man7/signal.7.html) for a list of available signals. This function
+         * returns `true` if [`kill(2)`](http://man7.org/linux/man-pages/man2/kill.2.html) succeeds, and `false` otherwise.
+         *
+         * ```js
+         * const { spawn } = require('child_process');
+         * const grep = spawn('grep', ['ssh']);
+         *
+         * grep.on('close', (code, signal) => {
+         *   console.log(
+         *     `child process terminated due to receipt of signal ${signal}`);
+         * });
+         *
+         * // Send SIGHUP to process.
+         * grep.kill('SIGHUP');
+         * ```
+         *
+         * The `ChildProcess` object may emit an `'error'` event if the signal
+         * cannot be delivered. Sending a signal to a child process that has already exited
+         * is not an error but may have unforeseen consequences. Specifically, if the
+         * process identifier (PID) has been reassigned to another process, the signal will
+         * be delivered to that process instead which can have unexpected results.
+         *
+         * While the function is called `kill`, the signal delivered to the child process
+         * may not actually terminate the process.
+         *
+         * See [`kill(2)`](http://man7.org/linux/man-pages/man2/kill.2.html) for reference.
+         *
+         * On Windows, where POSIX signals do not exist, the `signal` argument will be
+         * ignored, and the process will be killed forcefully and abruptly (similar to`'SIGKILL'`).
+         * See `Signal Events` for more details.
+         *
+         * On Linux, child processes of child processes will not be terminated
+         * when attempting to kill their parent. This is likely to happen when running a
+         * new process in a shell or with the use of the `shell` option of `ChildProcess`:
+         *
+         * ```js
+         * 'use strict';
+         * const { spawn } = require('child_process');
+         *
+         * const subprocess = spawn(
+         *   'sh',
+         *   [
+         *     '-c',
+         *     `node -e "setInterval(() => {
+         *       console.log(process.pid, 'is alive')
+         *     }, 500);"`,
+         *   ], {
+         *     stdio: ['inherit', 'inherit', 'inherit']
+         *   }
+         * );
+         *
+         * setTimeout(() => {
+         *   subprocess.kill(); // Does not terminate the Node.js process in the shell.
+         * }, 2000);
+         * ```
+         * @since v0.1.90
+         */
+        kill(signal?: NodeJS.Signals | number): boolean;
+        /**
+         * When an IPC channel has been established between the parent and child (
+         * i.e. when using {@link fork}), the `subprocess.send()` method can
+         * be used to send messages to the child process. When the child process is a
+         * Node.js instance, these messages can be received via the `'message'` event.
+         *
+         * The message goes through serialization and parsing. The resulting
+         * message might not be the same as what is originally sent.
+         *
+         * For example, in the parent script:
+         *
+         * ```js
+         * const cp = require('child_process');
+         * const n = cp.fork(`${__dirname}/sub.js`);
+         *
+         * n.on('message', (m) => {
+         *   console.log('PARENT got message:', m);
+         * });
+         *
+         * // Causes the child to print: CHILD got message: { hello: 'world' }
+         * n.send({ hello: 'world' });
+         * ```
+         *
+         * And then the child script, `'sub.js'` might look like this:
+         *
+         * ```js
+         * process.on('message', (m) => {
+         *   console.log('CHILD got message:', m);
+         * });
+         *
+         * // Causes the parent to print: PARENT got message: { foo: 'bar', baz: null }
+         * process.send({ foo: 'bar', baz: NaN });
+         * ```
+         *
+         * Child Node.js processes will have a `process.send()` method of their own
+         * that allows the child to send messages back to the parent.
+         *
+         * There is a special case when sending a `{cmd: 'NODE_foo'}` message. Messages
+         * containing a `NODE_` prefix in the `cmd` property are reserved for use within
+         * Node.js core and will not be emitted in the child's `'message'` event. Rather, such messages are emitted using the`'internalMessage'` event and are consumed internally by Node.js.
+         * Applications should avoid using such messages or listening for`'internalMessage'` events as it is subject to change without notice.
+         *
+         * The optional `sendHandle` argument that may be passed to `subprocess.send()` is
+         * for passing a TCP server or socket object to the child process. The child will
+         * receive the object as the second argument passed to the callback function
+         * registered on the `'message'` event. Any data that is received
+         * and buffered in the socket will not be sent to the child.
+         *
+         * The optional `callback` is a function that is invoked after the message is
+         * sent but before the child may have received it. The function is called with a
+         * single argument: `null` on success, or an `Error` object on failure.
+         *
+         * If no `callback` function is provided and the message cannot be sent, an`'error'` event will be emitted by the `ChildProcess` object. This can
+         * happen, for instance, when the child process has already exited.
+         *
+         * `subprocess.send()` will return `false` if the channel has closed or when the
+         * backlog of unsent messages exceeds a threshold that makes it unwise to send
+         * more. Otherwise, the method returns `true`. The `callback` function can be
+         * used to implement flow control.
+         *
+         * #### Example: sending a server object
+         *
+         * The `sendHandle` argument can be used, for instance, to pass the handle of
+         * a TCP server object to the child process as illustrated in the example below:
+         *
+         * ```js
+         * const subprocess = require('child_process').fork('subprocess.js');
+         *
+         * // Open up the server object and send the handle.
+         * const server = require('net').createServer();
+         * server.on('connection', (socket) => {
+         *   socket.end('handled by parent');
+         * });
+         * server.listen(1337, () => {
+         *   subprocess.send('server', server);
+         * });
+         * ```
+         *
+         * The child would then receive the server object as:
+         *
+         * ```js
+         * process.on('message', (m, server) => {
+         *   if (m === 'server') {
+         *     server.on('connection', (socket) => {
+         *       socket.end('handled by child');
+         *     });
+         *   }
+         * });
+         * ```
+         *
+         * Once the server is now shared between the parent and child, some connections
+         * can be handled by the parent and some by the child.
+         *
+         * While the example above uses a server created using the `net` module, `dgram`module servers use exactly the same workflow with the exceptions of listening on
+         * a `'message'` event instead of `'connection'` and using `server.bind()` instead
+         * of `server.listen()`. This is, however, currently only supported on Unix
+         * platforms.
+         *
+         * #### Example: sending a socket object
+         *
+         * Similarly, the `sendHandler` argument can be used to pass the handle of a
+         * socket to the child process. The example below spawns two children that each
+         * handle connections with "normal" or "special" priority:
+         *
+         * ```js
+         * const { fork } = require('child_process');
+         * const normal = fork('subprocess.js', ['normal']);
+         * const special = fork('subprocess.js', ['special']);
+         *
+         * // Open up the server and send sockets to child. Use pauseOnConnect to prevent
+         * // the sockets from being read before they are sent to the child process.
+         * const server = require('net').createServer({ pauseOnConnect: true });
+         * server.on('connection', (socket) => {
+         *
+         *   // If this is special priority...
+         *   if (socket.remoteAddress === '74.125.127.100') {
+         *     special.send('socket', socket);
+         *     return;
+         *   }
+         *   // This is normal priority.
+         *   normal.send('socket', socket);
+         * });
+         * server.listen(1337);
+         * ```
+         *
+         * The `subprocess.js` would receive the socket handle as the second argument
+         * passed to the event callback function:
+         *
+         * ```js
+         * process.on('message', (m, socket) => {
+         *   if (m === 'socket') {
+         *     if (socket) {
+         *       // Check that the client socket exists.
+         *       // It is possible for the socket to be closed between the time it is
+         *       // sent and the time it is received in the child process.
+         *       socket.end(`Request handled with ${process.argv[2]} priority`);
+         *     }
+         *   }
+         * });
+         * ```
+         *
+         * Do not use `.maxConnections` on a socket that has been passed to a subprocess.
+         * The parent cannot track when the socket is destroyed.
+         *
+         * Any `'message'` handlers in the subprocess should verify that `socket` exists,
+         * as the connection may have been closed during the time it takes to send the
+         * connection to the child.
+         * @since v0.5.9
+         * @param options The `options` argument, if present, is an object used to parameterize the sending of certain types of handles. `options` supports the following properties:
+         */
+        send(message: Serializable, callback?: (error: Error | null) => void): boolean;
+        send(message: Serializable, sendHandle?: SendHandle, callback?: (error: Error | null) => void): boolean;
+        send(message: Serializable, sendHandle?: SendHandle, options?: MessageOptions, callback?: (error: Error | null) => void): boolean;
+        /**
+         * Closes the IPC channel between parent and child, allowing the child to exit
+         * gracefully once there are no other connections keeping it alive. After calling
+         * this method the `subprocess.connected` and `process.connected` properties in
+         * both the parent and child (respectively) will be set to `false`, and it will be
+         * no longer possible to pass messages between the processes.
+         *
+         * The `'disconnect'` event will be emitted when there are no messages in the
+         * process of being received. This will most often be triggered immediately after
+         * calling `subprocess.disconnect()`.
+         *
+         * When the child process is a Node.js instance (e.g. spawned using {@link fork}), the `process.disconnect()` method can be invoked
+         * within the child process to close the IPC channel as well.
+         * @since v0.7.2
+         */
+        disconnect(): void;
+        /**
+         * By default, the parent will wait for the detached child to exit. To prevent the
+         * parent from waiting for a given `subprocess` to exit, use the`subprocess.unref()` method. Doing so will cause the parent's event loop to not
+         * include the child in its reference count, allowing the parent to exit
+         * independently of the child, unless there is an established IPC channel between
+         * the child and the parent.
+         *
+         * ```js
+         * const { spawn } = require('child_process');
+         *
+         * const subprocess = spawn(process.argv[0], ['child_program.js'], {
+         *   detached: true,
+         *   stdio: 'ignore'
+         * });
+         *
+         * subprocess.unref();
+         * ```
+         * @since v0.7.10
+         */
+        unref(): void;
+        /**
+         * Calling `subprocess.ref()` after making a call to `subprocess.unref()` will
+         * restore the removed reference count for the child process, forcing the parent
+         * to wait for the child to exit before exiting itself.
+         *
+         * ```js
+         * const { spawn } = require('child_process');
+         *
+         * const subprocess = spawn(process.argv[0], ['child_program.js'], {
+         *   detached: true,
+         *   stdio: 'ignore'
+         * });
+         *
+         * subprocess.unref();
+         * subprocess.ref();
+         * ```
+         * @since v0.7.10
+         */
+        ref(): void;
+        /**
+         * events.EventEmitter
+         * 1. close
+         * 2. disconnect
+         * 3. error
+         * 4. exit
+         * 5. message
+         * 6. spawn
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        addListener(event: 'disconnect', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'exit', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        addListener(event: 'message', listener: (message: Serializable, sendHandle: SendHandle) => void): this;
+        addListener(event: 'spawn', listener: () => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'close', code: number | null, signal: NodeJS.Signals | null): boolean;
+        emit(event: 'disconnect'): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'exit', code: number | null, signal: NodeJS.Signals | null): boolean;
+        emit(event: 'message', message: Serializable, sendHandle: SendHandle): boolean;
+        emit(event: 'spawn', listener: () => void): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        on(event: 'disconnect', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'exit', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        on(event: 'message', listener: (message: Serializable, sendHandle: SendHandle) => void): this;
+        on(event: 'spawn', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        once(event: 'disconnect', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'exit', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        once(event: 'message', listener: (message: Serializable, sendHandle: SendHandle) => void): this;
+        once(event: 'spawn', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        prependListener(event: 'disconnect', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'exit', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        prependListener(event: 'message', listener: (message: Serializable, sendHandle: SendHandle) => void): this;
+        prependListener(event: 'spawn', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        prependOnceListener(event: 'disconnect', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'exit', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        prependOnceListener(event: 'message', listener: (message: Serializable, sendHandle: SendHandle) => void): this;
+        prependOnceListener(event: 'spawn', listener: () => void): this;
+    }
+    // return this object when stdio option is undefined or not specified
+    interface ChildProcessWithoutNullStreams extends ChildProcess {
+        stdin: Writable;
+        stdout: Readable;
+        stderr: Readable;
+        readonly stdio: [
+            Writable,
+            Readable,
+            Readable,
+            // stderr
+            Readable | Writable | null | undefined,
+            // extra, no modification
+            Readable | Writable | null | undefined // extra, no modification
+        ];
+    }
+    // return this object when stdio option is a tuple of 3
+    interface ChildProcessByStdio<I extends null | Writable, O extends null | Readable, E extends null | Readable> extends ChildProcess {
+        stdin: I;
+        stdout: O;
+        stderr: E;
+        readonly stdio: [
+            I,
+            O,
+            E,
+            Readable | Writable | null | undefined,
+            // extra, no modification
+            Readable | Writable | null | undefined // extra, no modification
+        ];
+    }
+    interface MessageOptions {
+        keepOpen?: boolean | undefined;
+    }
+    type IOType = 'overlapped' | 'pipe' | 'ignore' | 'inherit';
+    type StdioOptions = IOType | Array<IOType | 'ipc' | Stream | number | null | undefined>;
+    type SerializationType = 'json' | 'advanced';
+    interface MessagingOptions extends Abortable {
+        /**
+         * Specify the kind of serialization used for sending messages between processes.
+         * @default 'json'
+         */
+        serialization?: SerializationType | undefined;
+        /**
+         * The signal value to be used when the spawned process will be killed by the abort signal.
+         * @default 'SIGTERM'
+         */
+        killSignal?: NodeJS.Signals | number | undefined;
+        /**
+         * In milliseconds the maximum amount of time the process is allowed to run.
+         */
+        timeout?: number | undefined;
+    }
+    interface ProcessEnvOptions {
+        uid?: number | undefined;
+        gid?: number | undefined;
+        cwd?: string | URL | undefined;
+        env?: NodeJS.ProcessEnv | undefined;
+    }
+    interface CommonOptions extends ProcessEnvOptions {
+        /**
+         * @default true
+         */
+        windowsHide?: boolean | undefined;
+        /**
+         * @default 0
+         */
+        timeout?: number | undefined;
+    }
+    interface CommonSpawnOptions extends CommonOptions, MessagingOptions, Abortable {
+        argv0?: string | undefined;
+        stdio?: StdioOptions | undefined;
+        shell?: boolean | string | undefined;
+        windowsVerbatimArguments?: boolean | undefined;
+    }
+    interface SpawnOptions extends CommonSpawnOptions {
+        detached?: boolean | undefined;
+    }
+    interface SpawnOptionsWithoutStdio extends SpawnOptions {
+        stdio?: StdioPipeNamed | StdioPipe[] | undefined;
+    }
+    type StdioNull = 'inherit' | 'ignore' | Stream;
+    type StdioPipeNamed = 'pipe' | 'overlapped';
+    type StdioPipe = undefined | null | StdioPipeNamed;
+    interface SpawnOptionsWithStdioTuple<Stdin extends StdioNull | StdioPipe, Stdout extends StdioNull | StdioPipe, Stderr extends StdioNull | StdioPipe> extends SpawnOptions {
+        stdio: [Stdin, Stdout, Stderr];
+    }
+    /**
+     * The `child_process.spawn()` method spawns a new process using the given`command`, with command-line arguments in `args`. If omitted, `args` defaults
+     * to an empty array.
+     *
+     * **If the `shell` option is enabled, do not pass unsanitized user input to this**
+     * **function. Any input containing shell metacharacters may be used to trigger**
+     * **arbitrary command execution.**
+     *
+     * A third argument may be used to specify additional options, with these defaults:
+     *
+     * ```js
+     * const defaults = {
+     *   cwd: undefined,
+     *   env: process.env
+     * };
+     * ```
+     *
+     * Use `cwd` to specify the working directory from which the process is spawned.
+     * If not given, the default is to inherit the current working directory. If given,
+     * but the path does not exist, the child process emits an `ENOENT` error
+     * and exits immediately. `ENOENT` is also emitted when the command
+     * does not exist.
+     *
+     * Use `env` to specify environment variables that will be visible to the new
+     * process, the default is `process.env`.
+     *
+     * `undefined` values in `env` will be ignored.
+     *
+     * Example of running `ls -lh /usr`, capturing `stdout`, `stderr`, and the
+     * exit code:
+     *
+     * ```js
+     * const { spawn } = require('child_process');
+     * const ls = spawn('ls', ['-lh', '/usr']);
+     *
+     * ls.stdout.on('data', (data) => {
+     *   console.log(`stdout: ${data}`);
+     * });
+     *
+     * ls.stderr.on('data', (data) => {
+     *   console.error(`stderr: ${data}`);
+     * });
+     *
+     * ls.on('close', (code) => {
+     *   console.log(`child process exited with code ${code}`);
+     * });
+     * ```
+     *
+     * Example: A very elaborate way to run `ps ax | grep ssh`
+     *
+     * ```js
+     * const { spawn } = require('child_process');
+     * const ps = spawn('ps', ['ax']);
+     * const grep = spawn('grep', ['ssh']);
+     *
+     * ps.stdout.on('data', (data) => {
+     *   grep.stdin.write(data);
+     * });
+     *
+     * ps.stderr.on('data', (data) => {
+     *   console.error(`ps stderr: ${data}`);
+     * });
+     *
+     * ps.on('close', (code) => {
+     *   if (code !== 0) {
+     *     console.log(`ps process exited with code ${code}`);
+     *   }
+     *   grep.stdin.end();
+     * });
+     *
+     * grep.stdout.on('data', (data) => {
+     *   console.log(data.toString());
+     * });
+     *
+     * grep.stderr.on('data', (data) => {
+     *   console.error(`grep stderr: ${data}`);
+     * });
+     *
+     * grep.on('close', (code) => {
+     *   if (code !== 0) {
+     *     console.log(`grep process exited with code ${code}`);
+     *   }
+     * });
+     * ```
+     *
+     * Example of checking for failed `spawn`:
+     *
+     * ```js
+     * const { spawn } = require('child_process');
+     * const subprocess = spawn('bad_command');
+     *
+     * subprocess.on('error', (err) => {
+     *   console.error('Failed to start subprocess.');
+     * });
+     * ```
+     *
+     * Certain platforms (macOS, Linux) will use the value of `argv[0]` for the process
+     * title while others (Windows, SunOS) will use `command`.
+     *
+     * Node.js currently overwrites `argv[0]` with `process.execPath` on startup, so`process.argv[0]` in a Node.js child process will not match the `argv0`parameter passed to `spawn` from the parent,
+     * retrieve it with the`process.argv0` property instead.
+     *
+     * If the `signal` option is enabled, calling `.abort()` on the corresponding`AbortController` is similar to calling `.kill()` on the child process except
+     * the error passed to the callback will be an `AbortError`:
+     *
+     * ```js
+     * const { spawn } = require('child_process');
+     * const controller = new AbortController();
+     * const { signal } = controller;
+     * const grep = spawn('grep', ['ssh'], { signal });
+     * grep.on('error', (err) => {
+     *   // This will be called with err being an AbortError if the controller aborts
+     * });
+     * controller.abort(); // Stops the child process
+     * ```
+     * @since v0.1.90
+     * @param command The command to run.
+     * @param args List of string arguments.
+     */
+    function spawn(command: string, options?: SpawnOptionsWithoutStdio): ChildProcessWithoutNullStreams;
+    function spawn(command: string, options: SpawnOptionsWithStdioTuple<StdioPipe, StdioPipe, StdioPipe>): ChildProcessByStdio<Writable, Readable, Readable>;
+    function spawn(command: string, options: SpawnOptionsWithStdioTuple<StdioPipe, StdioPipe, StdioNull>): ChildProcessByStdio<Writable, Readable, null>;
+    function spawn(command: string, options: SpawnOptionsWithStdioTuple<StdioPipe, StdioNull, StdioPipe>): ChildProcessByStdio<Writable, null, Readable>;
+    function spawn(command: string, options: SpawnOptionsWithStdioTuple<StdioNull, StdioPipe, StdioPipe>): ChildProcessByStdio<null, Readable, Readable>;
+    function spawn(command: string, options: SpawnOptionsWithStdioTuple<StdioPipe, StdioNull, StdioNull>): ChildProcessByStdio<Writable, null, null>;
+    function spawn(command: string, options: SpawnOptionsWithStdioTuple<StdioNull, StdioPipe, StdioNull>): ChildProcessByStdio<null, Readable, null>;
+    function spawn(command: string, options: SpawnOptionsWithStdioTuple<StdioNull, StdioNull, StdioPipe>): ChildProcessByStdio<null, null, Readable>;
+    function spawn(command: string, options: SpawnOptionsWithStdioTuple<StdioNull, StdioNull, StdioNull>): ChildProcessByStdio<null, null, null>;
+    function spawn(command: string, options: SpawnOptions): ChildProcess;
+    // overloads of spawn with 'args'
+    function spawn(command: string, args?: ReadonlyArray<string>, options?: SpawnOptionsWithoutStdio): ChildProcessWithoutNullStreams;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptionsWithStdioTuple<StdioPipe, StdioPipe, StdioPipe>): ChildProcessByStdio<Writable, Readable, Readable>;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptionsWithStdioTuple<StdioPipe, StdioPipe, StdioNull>): ChildProcessByStdio<Writable, Readable, null>;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptionsWithStdioTuple<StdioPipe, StdioNull, StdioPipe>): ChildProcessByStdio<Writable, null, Readable>;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptionsWithStdioTuple<StdioNull, StdioPipe, StdioPipe>): ChildProcessByStdio<null, Readable, Readable>;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptionsWithStdioTuple<StdioPipe, StdioNull, StdioNull>): ChildProcessByStdio<Writable, null, null>;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptionsWithStdioTuple<StdioNull, StdioPipe, StdioNull>): ChildProcessByStdio<null, Readable, null>;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptionsWithStdioTuple<StdioNull, StdioNull, StdioPipe>): ChildProcessByStdio<null, null, Readable>;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptionsWithStdioTuple<StdioNull, StdioNull, StdioNull>): ChildProcessByStdio<null, null, null>;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptions): ChildProcess;
+    interface ExecOptions extends CommonOptions {
+        shell?: string | undefined;
+        signal?: AbortSignal | undefined;
+        maxBuffer?: number | undefined;
+        killSignal?: NodeJS.Signals | number | undefined;
+    }
+    interface ExecOptionsWithStringEncoding extends ExecOptions {
+        encoding: BufferEncoding;
+    }
+    interface ExecOptionsWithBufferEncoding extends ExecOptions {
+        encoding: BufferEncoding | null; // specify `null`.
+    }
+    interface ExecException extends Error {
+        cmd?: string | undefined;
+        killed?: boolean | undefined;
+        code?: number | undefined;
+        signal?: NodeJS.Signals | undefined;
+    }
+    /**
+     * Spawns a shell then executes the `command` within that shell, buffering any
+     * generated output. The `command` string passed to the exec function is processed
+     * directly by the shell and special characters (vary based on [shell](https://en.wikipedia.org/wiki/List_of_command-line_interpreters))
+     * need to be dealt with accordingly:
+     *
+     * ```js
+     * const { exec } = require('child_process');
+     *
+     * exec('"/path/to/test file/test.sh" arg1 arg2');
+     * // Double quotes are used so that the space in the path is not interpreted as
+     * // a delimiter of multiple arguments.
+     *
+     * exec('echo "The \\$HOME variable is $HOME"');
+     * // The $HOME variable is escaped in the first instance, but not in the second.
+     * ```
+     *
+     * **Never pass unsanitized user input to this function. Any input containing shell**
+     * **metacharacters may be used to trigger arbitrary command execution.**
+     *
+     * If a `callback` function is provided, it is called with the arguments`(error, stdout, stderr)`. On success, `error` will be `null`. On error,`error` will be an instance of `Error`. The
+     * `error.code` property will be
+     * the exit code of the process. By convention, any exit code other than `0`indicates an error. `error.signal` will be the signal that terminated the
+     * process.
+     *
+     * The `stdout` and `stderr` arguments passed to the callback will contain the
+     * stdout and stderr output of the child process. By default, Node.js will decode
+     * the output as UTF-8 and pass strings to the callback. The `encoding` option
+     * can be used to specify the character encoding used to decode the stdout and
+     * stderr output. If `encoding` is `'buffer'`, or an unrecognized character
+     * encoding, `Buffer` objects will be passed to the callback instead.
+     *
+     * ```js
+     * const { exec } = require('child_process');
+     * exec('cat *.js missing_file | wc -l', (error, stdout, stderr) => {
+     *   if (error) {
+     *     console.error(`exec error: ${error}`);
+     *     return;
+     *   }
+     *   console.log(`stdout: ${stdout}`);
+     *   console.error(`stderr: ${stderr}`);
+     * });
+     * ```
+     *
+     * If `timeout` is greater than `0`, the parent will send the signal
+     * identified by the `killSignal` property (the default is `'SIGTERM'`) if the
+     * child runs longer than `timeout` milliseconds.
+     *
+     * Unlike the [`exec(3)`](http://man7.org/linux/man-pages/man3/exec.3.html) POSIX system call, `child_process.exec()` does not replace
+     * the existing process and uses a shell to execute the command.
+     *
+     * If this method is invoked as its `util.promisify()` ed version, it returns
+     * a `Promise` for an `Object` with `stdout` and `stderr` properties. The returned`ChildProcess` instance is attached to the `Promise` as a `child` property. In
+     * case of an error (including any error resulting in an exit code other than 0), a
+     * rejected promise is returned, with the same `error` object given in the
+     * callback, but with two additional properties `stdout` and `stderr`.
+     *
+     * ```js
+     * const util = require('util');
+     * const exec = util.promisify(require('child_process').exec);
+     *
+     * async function lsExample() {
+     *   const { stdout, stderr } = await exec('ls');
+     *   console.log('stdout:', stdout);
+     *   console.error('stderr:', stderr);
+     * }
+     * lsExample();
+     * ```
+     *
+     * If the `signal` option is enabled, calling `.abort()` on the corresponding`AbortController` is similar to calling `.kill()` on the child process except
+     * the error passed to the callback will be an `AbortError`:
+     *
+     * ```js
+     * const { exec } = require('child_process');
+     * const controller = new AbortController();
+     * const { signal } = controller;
+     * const child = exec('grep ssh', { signal }, (error) => {
+     *   console.log(error); // an AbortError
+     * });
+     * controller.abort();
+     * ```
+     * @since v0.1.90
+     * @param command The command to run, with space-separated arguments.
+     * @param callback called with the output when process terminates.
+     */
+    function exec(command: string, callback?: (error: ExecException | null, stdout: string, stderr: string) => void): ChildProcess;
+    // `options` with `"buffer"` or `null` for `encoding` means stdout/stderr are definitely `Buffer`.
+    function exec(
+        command: string,
+        options: {
+            encoding: 'buffer' | null;
+        } & ExecOptions,
+        callback?: (error: ExecException | null, stdout: Buffer, stderr: Buffer) => void
+    ): ChildProcess;
+    // `options` with well known `encoding` means stdout/stderr are definitely `string`.
+    function exec(
+        command: string,
+        options: {
+            encoding: BufferEncoding;
+        } & ExecOptions,
+        callback?: (error: ExecException | null, stdout: string, stderr: string) => void
+    ): ChildProcess;
+    // `options` with an `encoding` whose type is `string` means stdout/stderr could either be `Buffer` or `string`.
+    // There is no guarantee the `encoding` is unknown as `string` is a superset of `BufferEncoding`.
+    function exec(
+        command: string,
+        options: {
+            encoding: BufferEncoding;
+        } & ExecOptions,
+        callback?: (error: ExecException | null, stdout: string | Buffer, stderr: string | Buffer) => void
+    ): ChildProcess;
+    // `options` without an `encoding` means stdout/stderr are definitely `string`.
+    function exec(command: string, options: ExecOptions, callback?: (error: ExecException | null, stdout: string, stderr: string) => void): ChildProcess;
+    // fallback if nothing else matches. Worst case is always `string | Buffer`.
+    function exec(
+        command: string,
+        options: (ObjectEncodingOptions & ExecOptions) | undefined | null,
+        callback?: (error: ExecException | null, stdout: string | Buffer, stderr: string | Buffer) => void
+    ): ChildProcess;
+    interface PromiseWithChild<T> extends Promise<T> {
+        child: ChildProcess;
+    }
+    namespace exec {
+        function __promisify__(command: string): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            command: string,
+            options: {
+                encoding: 'buffer' | null;
+            } & ExecOptions
+        ): PromiseWithChild<{
+            stdout: Buffer;
+            stderr: Buffer;
+        }>;
+        function __promisify__(
+            command: string,
+            options: {
+                encoding: BufferEncoding;
+            } & ExecOptions
+        ): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            command: string,
+            options: ExecOptions
+        ): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            command: string,
+            options?: (ObjectEncodingOptions & ExecOptions) | null
+        ): PromiseWithChild<{
+            stdout: string | Buffer;
+            stderr: string | Buffer;
+        }>;
+    }
+    interface ExecFileOptions extends CommonOptions, Abortable {
+        maxBuffer?: number | undefined;
+        killSignal?: NodeJS.Signals | number | undefined;
+        windowsVerbatimArguments?: boolean | undefined;
+        shell?: boolean | string | undefined;
+        signal?: AbortSignal | undefined;
+    }
+    interface ExecFileOptionsWithStringEncoding extends ExecFileOptions {
+        encoding: BufferEncoding;
+    }
+    interface ExecFileOptionsWithBufferEncoding extends ExecFileOptions {
+        encoding: 'buffer' | null;
+    }
+    interface ExecFileOptionsWithOtherEncoding extends ExecFileOptions {
+        encoding: BufferEncoding;
+    }
+    type ExecFileException = ExecException & NodeJS.ErrnoException;
+    /**
+     * The `child_process.execFile()` function is similar to {@link exec} except that it does not spawn a shell by default. Rather, the specified
+     * executable `file` is spawned directly as a new process making it slightly more
+     * efficient than {@link exec}.
+     *
+     * The same options as {@link exec} are supported. Since a shell is
+     * not spawned, behaviors such as I/O redirection and file globbing are not
+     * supported.
+     *
+     * ```js
+     * const { execFile } = require('child_process');
+     * const child = execFile('node', ['--version'], (error, stdout, stderr) => {
+     *   if (error) {
+     *     throw error;
+     *   }
+     *   console.log(stdout);
+     * });
+     * ```
+     *
+     * The `stdout` and `stderr` arguments passed to the callback will contain the
+     * stdout and stderr output of the child process. By default, Node.js will decode
+     * the output as UTF-8 and pass strings to the callback. The `encoding` option
+     * can be used to specify the character encoding used to decode the stdout and
+     * stderr output. If `encoding` is `'buffer'`, or an unrecognized character
+     * encoding, `Buffer` objects will be passed to the callback instead.
+     *
+     * If this method is invoked as its `util.promisify()` ed version, it returns
+     * a `Promise` for an `Object` with `stdout` and `stderr` properties. The returned`ChildProcess` instance is attached to the `Promise` as a `child` property. In
+     * case of an error (including any error resulting in an exit code other than 0), a
+     * rejected promise is returned, with the same `error` object given in the
+     * callback, but with two additional properties `stdout` and `stderr`.
+     *
+     * ```js
+     * const util = require('util');
+     * const execFile = util.promisify(require('child_process').execFile);
+     * async function getVersion() {
+     *   const { stdout } = await execFile('node', ['--version']);
+     *   console.log(stdout);
+     * }
+     * getVersion();
+     * ```
+     *
+     * **If the `shell` option is enabled, do not pass unsanitized user input to this**
+     * **function. Any input containing shell metacharacters may be used to trigger**
+     * **arbitrary command execution.**
+     *
+     * If the `signal` option is enabled, calling `.abort()` on the corresponding`AbortController` is similar to calling `.kill()` on the child process except
+     * the error passed to the callback will be an `AbortError`:
+     *
+     * ```js
+     * const { execFile } = require('child_process');
+     * const controller = new AbortController();
+     * const { signal } = controller;
+     * const child = execFile('node', ['--version'], { signal }, (error) => {
+     *   console.log(error); // an AbortError
+     * });
+     * controller.abort();
+     * ```
+     * @since v0.1.91
+     * @param file The name or path of the executable file to run.
+     * @param args List of string arguments.
+     * @param callback Called with the output when process terminates.
+     */
+    function execFile(file: string): ChildProcess;
+    function execFile(file: string, options: (ObjectEncodingOptions & ExecFileOptions) | undefined | null): ChildProcess;
+    function execFile(file: string, args?: ReadonlyArray<string> | null): ChildProcess;
+    function execFile(file: string, args: ReadonlyArray<string> | undefined | null, options: (ObjectEncodingOptions & ExecFileOptions) | undefined | null): ChildProcess;
+    // no `options` definitely means stdout/stderr are `string`.
+    function execFile(file: string, callback: (error: ExecFileException | null, stdout: string, stderr: string) => void): ChildProcess;
+    function execFile(file: string, args: ReadonlyArray<string> | undefined | null, callback: (error: ExecFileException | null, stdout: string, stderr: string) => void): ChildProcess;
+    // `options` with `"buffer"` or `null` for `encoding` means stdout/stderr are definitely `Buffer`.
+    function execFile(file: string, options: ExecFileOptionsWithBufferEncoding, callback: (error: ExecFileException | null, stdout: Buffer, stderr: Buffer) => void): ChildProcess;
+    function execFile(
+        file: string,
+        args: ReadonlyArray<string> | undefined | null,
+        options: ExecFileOptionsWithBufferEncoding,
+        callback: (error: ExecFileException | null, stdout: Buffer, stderr: Buffer) => void
+    ): ChildProcess;
+    // `options` with well known `encoding` means stdout/stderr are definitely `string`.
+    function execFile(file: string, options: ExecFileOptionsWithStringEncoding, callback: (error: ExecFileException | null, stdout: string, stderr: string) => void): ChildProcess;
+    function execFile(
+        file: string,
+        args: ReadonlyArray<string> | undefined | null,
+        options: ExecFileOptionsWithStringEncoding,
+        callback: (error: ExecFileException | null, stdout: string, stderr: string) => void
+    ): ChildProcess;
+    // `options` with an `encoding` whose type is `string` means stdout/stderr could either be `Buffer` or `string`.
+    // There is no guarantee the `encoding` is unknown as `string` is a superset of `BufferEncoding`.
+    function execFile(file: string, options: ExecFileOptionsWithOtherEncoding, callback: (error: ExecFileException | null, stdout: string | Buffer, stderr: string | Buffer) => void): ChildProcess;
+    function execFile(
+        file: string,
+        args: ReadonlyArray<string> | undefined | null,
+        options: ExecFileOptionsWithOtherEncoding,
+        callback: (error: ExecFileException | null, stdout: string | Buffer, stderr: string | Buffer) => void
+    ): ChildProcess;
+    // `options` without an `encoding` means stdout/stderr are definitely `string`.
+    function execFile(file: string, options: ExecFileOptions, callback: (error: ExecFileException | null, stdout: string, stderr: string) => void): ChildProcess;
+    function execFile(
+        file: string,
+        args: ReadonlyArray<string> | undefined | null,
+        options: ExecFileOptions,
+        callback: (error: ExecFileException | null, stdout: string, stderr: string) => void
+    ): ChildProcess;
+    // fallback if nothing else matches. Worst case is always `string | Buffer`.
+    function execFile(
+        file: string,
+        options: (ObjectEncodingOptions & ExecFileOptions) | undefined | null,
+        callback: ((error: ExecFileException | null, stdout: string | Buffer, stderr: string | Buffer) => void) | undefined | null
+    ): ChildProcess;
+    function execFile(
+        file: string,
+        args: ReadonlyArray<string> | undefined | null,
+        options: (ObjectEncodingOptions & ExecFileOptions) | undefined | null,
+        callback: ((error: ExecFileException | null, stdout: string | Buffer, stderr: string | Buffer) => void) | undefined | null
+    ): ChildProcess;
+    namespace execFile {
+        function __promisify__(file: string): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            file: string,
+            args: ReadonlyArray<string> | undefined | null
+        ): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            file: string,
+            options: ExecFileOptionsWithBufferEncoding
+        ): PromiseWithChild<{
+            stdout: Buffer;
+            stderr: Buffer;
+        }>;
+        function __promisify__(
+            file: string,
+            args: ReadonlyArray<string> | undefined | null,
+            options: ExecFileOptionsWithBufferEncoding
+        ): PromiseWithChild<{
+            stdout: Buffer;
+            stderr: Buffer;
+        }>;
+        function __promisify__(
+            file: string,
+            options: ExecFileOptionsWithStringEncoding
+        ): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            file: string,
+            args: ReadonlyArray<string> | undefined | null,
+            options: ExecFileOptionsWithStringEncoding
+        ): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            file: string,
+            options: ExecFileOptionsWithOtherEncoding
+        ): PromiseWithChild<{
+            stdout: string | Buffer;
+            stderr: string | Buffer;
+        }>;
+        function __promisify__(
+            file: string,
+            args: ReadonlyArray<string> | undefined | null,
+            options: ExecFileOptionsWithOtherEncoding
+        ): PromiseWithChild<{
+            stdout: string | Buffer;
+            stderr: string | Buffer;
+        }>;
+        function __promisify__(
+            file: string,
+            options: ExecFileOptions
+        ): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            file: string,
+            args: ReadonlyArray<string> | undefined | null,
+            options: ExecFileOptions
+        ): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            file: string,
+            options: (ObjectEncodingOptions & ExecFileOptions) | undefined | null
+        ): PromiseWithChild<{
+            stdout: string | Buffer;
+            stderr: string | Buffer;
+        }>;
+        function __promisify__(
+            file: string,
+            args: ReadonlyArray<string> | undefined | null,
+            options: (ObjectEncodingOptions & ExecFileOptions) | undefined | null
+        ): PromiseWithChild<{
+            stdout: string | Buffer;
+            stderr: string | Buffer;
+        }>;
+    }
+    interface ForkOptions extends ProcessEnvOptions, MessagingOptions, Abortable {
+        execPath?: string | undefined;
+        execArgv?: string[] | undefined;
+        silent?: boolean | undefined;
+        stdio?: StdioOptions | undefined;
+        detached?: boolean | undefined;
+        windowsVerbatimArguments?: boolean | undefined;
+    }
+    /**
+     * The `child_process.fork()` method is a special case of {@link spawn} used specifically to spawn new Node.js processes.
+     * Like {@link spawn}, a `ChildProcess` object is returned. The
+     * returned `ChildProcess` will have an additional communication channel
+     * built-in that allows messages to be passed back and forth between the parent and
+     * child. See `subprocess.send()` for details.
+     *
+     * Keep in mind that spawned Node.js child processes are
+     * independent of the parent with exception of the IPC communication channel
+     * that is established between the two. Each process has its own memory, with
+     * their own V8 instances. Because of the additional resource allocations
+     * required, spawning a large number of child Node.js processes is not
+     * recommended.
+     *
+     * By default, `child_process.fork()` will spawn new Node.js instances using the `process.execPath` of the parent process. The `execPath` property in the`options` object allows for an alternative
+     * execution path to be used.
+     *
+     * Node.js processes launched with a custom `execPath` will communicate with the
+     * parent process using the file descriptor (fd) identified using the
+     * environment variable `NODE_CHANNEL_FD` on the child process.
+     *
+     * Unlike the [`fork(2)`](http://man7.org/linux/man-pages/man2/fork.2.html) POSIX system call, `child_process.fork()` does not clone the
+     * current process.
+     *
+     * The `shell` option available in {@link spawn} is not supported by`child_process.fork()` and will be ignored if set.
+     *
+     * If the `signal` option is enabled, calling `.abort()` on the corresponding`AbortController` is similar to calling `.kill()` on the child process except
+     * the error passed to the callback will be an `AbortError`:
+     *
+     * ```js
+     * if (process.argv[2] === 'child') {
+     *   setTimeout(() => {
+     *     console.log(`Hello from ${process.argv[2]}!`);
+     *   }, 1_000);
+     * } else {
+     *   const { fork } = require('child_process');
+     *   const controller = new AbortController();
+     *   const { signal } = controller;
+     *   const child = fork(__filename, ['child'], { signal });
+     *   child.on('error', (err) => {
+     *     // This will be called with err being an AbortError if the controller aborts
+     *   });
+     *   controller.abort(); // Stops the child process
+     * }
+     * ```
+     * @since v0.5.0
+     * @param modulePath The module to run in the child.
+     * @param args List of string arguments.
+     */
+    function fork(modulePath: string, options?: ForkOptions): ChildProcess;
+    function fork(modulePath: string, args?: ReadonlyArray<string>, options?: ForkOptions): ChildProcess;
+    interface SpawnSyncOptions extends CommonSpawnOptions {
+        input?: string | NodeJS.ArrayBufferView | undefined;
+        maxBuffer?: number | undefined;
+        encoding?: BufferEncoding | 'buffer' | null | undefined;
+    }
+    interface SpawnSyncOptionsWithStringEncoding extends SpawnSyncOptions {
+        encoding: BufferEncoding;
+    }
+    interface SpawnSyncOptionsWithBufferEncoding extends SpawnSyncOptions {
+        encoding?: 'buffer' | null | undefined;
+    }
+    interface SpawnSyncReturns<T> {
+        pid: number;
+        output: Array<T | null>;
+        stdout: T;
+        stderr: T;
+        status: number | null;
+        signal: NodeJS.Signals | null;
+        error?: Error | undefined;
+    }
+    /**
+     * The `child_process.spawnSync()` method is generally identical to {@link spawn} with the exception that the function will not return
+     * until the child process has fully closed. When a timeout has been encountered
+     * and `killSignal` is sent, the method won't return until the process has
+     * completely exited. If the process intercepts and handles the `SIGTERM` signal
+     * and doesn't exit, the parent process will wait until the child process has
+     * exited.
+     *
+     * **If the `shell` option is enabled, do not pass unsanitized user input to this**
+     * **function. Any input containing shell metacharacters may be used to trigger**
+     * **arbitrary command execution.**
+     * @since v0.11.12
+     * @param command The command to run.
+     * @param args List of string arguments.
+     */
+    function spawnSync(command: string): SpawnSyncReturns<Buffer>;
+    function spawnSync(command: string, options: SpawnSyncOptionsWithStringEncoding): SpawnSyncReturns<string>;
+    function spawnSync(command: string, options: SpawnSyncOptionsWithBufferEncoding): SpawnSyncReturns<Buffer>;
+    function spawnSync(command: string, options?: SpawnSyncOptions): SpawnSyncReturns<string | Buffer>;
+    function spawnSync(command: string, args: ReadonlyArray<string>): SpawnSyncReturns<Buffer>;
+    function spawnSync(command: string, args: ReadonlyArray<string>, options: SpawnSyncOptionsWithStringEncoding): SpawnSyncReturns<string>;
+    function spawnSync(command: string, args: ReadonlyArray<string>, options: SpawnSyncOptionsWithBufferEncoding): SpawnSyncReturns<Buffer>;
+    function spawnSync(command: string, args?: ReadonlyArray<string>, options?: SpawnSyncOptions): SpawnSyncReturns<string | Buffer>;
+    interface CommonExecOptions extends CommonOptions {
+        input?: string | NodeJS.ArrayBufferView | undefined;
+        stdio?: StdioOptions | undefined;
+        killSignal?: NodeJS.Signals | number | undefined;
+        maxBuffer?: number | undefined;
+        encoding?: BufferEncoding | 'buffer' | null | undefined;
+    }
+    interface ExecSyncOptions extends CommonExecOptions {
+        shell?: string | undefined;
+    }
+    interface ExecSyncOptionsWithStringEncoding extends ExecSyncOptions {
+        encoding: BufferEncoding;
+    }
+    interface ExecSyncOptionsWithBufferEncoding extends ExecSyncOptions {
+        encoding?: 'buffer' | null | undefined;
+    }
+    /**
+     * The `child_process.execSync()` method is generally identical to {@link exec} with the exception that the method will not return
+     * until the child process has fully closed. When a timeout has been encountered
+     * and `killSignal` is sent, the method won't return until the process has
+     * completely exited. If the child process intercepts and handles the `SIGTERM`signal and doesn't exit, the parent process will wait until the child process
+     * has exited.
+     *
+     * If the process times out or has a non-zero exit code, this method will throw.
+     * The `Error` object will contain the entire result from {@link spawnSync}.
+     *
+     * **Never pass unsanitized user input to this function. Any input containing shell**
+     * **metacharacters may be used to trigger arbitrary command execution.**
+     * @since v0.11.12
+     * @param command The command to run.
+     * @return The stdout from the command.
+     */
+    function execSync(command: string): Buffer;
+    function execSync(command: string, options: ExecSyncOptionsWithStringEncoding): string;
+    function execSync(command: string, options: ExecSyncOptionsWithBufferEncoding): Buffer;
+    function execSync(command: string, options?: ExecSyncOptions): string | Buffer;
+    interface ExecFileSyncOptions extends CommonExecOptions {
+        shell?: boolean | string | undefined;
+    }
+    interface ExecFileSyncOptionsWithStringEncoding extends ExecFileSyncOptions {
+        encoding: BufferEncoding;
+    }
+    interface ExecFileSyncOptionsWithBufferEncoding extends ExecFileSyncOptions {
+        encoding?: 'buffer' | null; // specify `null`.
+    }
+    /**
+     * The `child_process.execFileSync()` method is generally identical to {@link execFile} with the exception that the method will not
+     * return until the child process has fully closed. When a timeout has been
+     * encountered and `killSignal` is sent, the method won't return until the process
+     * has completely exited.
+     *
+     * If the child process intercepts and handles the `SIGTERM` signal and
+     * does not exit, the parent process will still wait until the child process has
+     * exited.
+     *
+     * If the process times out or has a non-zero exit code, this method will throw an `Error` that will include the full result of the underlying {@link spawnSync}.
+     *
+     * **If the `shell` option is enabled, do not pass unsanitized user input to this**
+     * **function. Any input containing shell metacharacters may be used to trigger**
+     * **arbitrary command execution.**
+     * @since v0.11.12
+     * @param file The name or path of the executable file to run.
+     * @param args List of string arguments.
+     * @return The stdout from the command.
+     */
+    function execFileSync(file: string): Buffer;
+    function execFileSync(file: string, options: ExecFileSyncOptionsWithStringEncoding): string;
+    function execFileSync(file: string, options: ExecFileSyncOptionsWithBufferEncoding): Buffer;
+    function execFileSync(file: string, options?: ExecFileSyncOptions): string | Buffer;
+    function execFileSync(file: string, args: ReadonlyArray<string>): Buffer;
+    function execFileSync(file: string, args: ReadonlyArray<string>, options: ExecFileSyncOptionsWithStringEncoding): string;
+    function execFileSync(file: string, args: ReadonlyArray<string>, options: ExecFileSyncOptionsWithBufferEncoding): Buffer;
+    function execFileSync(file: string, args?: ReadonlyArray<string>, options?: ExecFileSyncOptions): string | Buffer;
+}
+declare module 'node:child_process' {
+    export * from 'child_process';
+}
diff --git a/igv_component/node_modules/@types/node/cluster.d.ts b/igv_component/node_modules/@types/node/cluster.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..37dbc5746171fc04bcb8ea6f8b7183fa1b5db448
--- /dev/null
+++ b/igv_component/node_modules/@types/node/cluster.d.ts
@@ -0,0 +1,410 @@
+/**
+ * Clusters of Node.js processes can be used to run multiple instances of Node.js
+ * that can distribute workloads among their application threads. When process
+ * isolation is not needed, use the `worker_threads` module instead, which
+ * allows running multiple application threads within a single Node.js instance.
+ *
+ * The cluster module allows easy creation of child processes that all share
+ * server ports.
+ *
+ * ```js
+ * import cluster from 'cluster';
+ * import http from 'http';
+ * import { cpus } from 'os';
+ * import process from 'process';
+ *
+ * const numCPUs = cpus().length;
+ *
+ * if (cluster.isPrimary) {
+ *   console.log(`Primary ${process.pid} is running`);
+ *
+ *   // Fork workers.
+ *   for (let i = 0; i < numCPUs; i++) {
+ *     cluster.fork();
+ *   }
+ *
+ *   cluster.on('exit', (worker, code, signal) => {
+ *     console.log(`worker ${worker.process.pid} died`);
+ *   });
+ * } else {
+ *   // Workers can share any TCP connection
+ *   // In this case it is an HTTP server
+ *   http.createServer((req, res) => {
+ *     res.writeHead(200);
+ *     res.end('hello world\n');
+ *   }).listen(8000);
+ *
+ *   console.log(`Worker ${process.pid} started`);
+ * }
+ * ```
+ *
+ * Running Node.js will now share port 8000 between the workers:
+ *
+ * ```console
+ * $ node server.js
+ * Primary 3596 is running
+ * Worker 4324 started
+ * Worker 4520 started
+ * Worker 6056 started
+ * Worker 5644 started
+ * ```
+ *
+ * On Windows, it is not yet possible to set up a named pipe server in a worker.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/cluster.js)
+ */
+declare module 'cluster' {
+    import * as child from 'node:child_process';
+    import EventEmitter = require('node:events');
+    import * as net from 'node:net';
+    export interface ClusterSettings {
+        execArgv?: string[] | undefined; // default: process.execArgv
+        exec?: string | undefined;
+        args?: string[] | undefined;
+        silent?: boolean | undefined;
+        stdio?: any[] | undefined;
+        uid?: number | undefined;
+        gid?: number | undefined;
+        inspectPort?: number | (() => number) | undefined;
+    }
+    export interface Address {
+        address: string;
+        port: number;
+        addressType: number | 'udp4' | 'udp6'; // 4, 6, -1, "udp4", "udp6"
+    }
+    /**
+     * A `Worker` object contains all public information and method about a worker.
+     * In the primary it can be obtained using `cluster.workers`. In a worker
+     * it can be obtained using `cluster.worker`.
+     * @since v0.7.0
+     */
+    export class Worker extends EventEmitter {
+        /**
+         * Each new worker is given its own unique id, this id is stored in the`id`.
+         *
+         * While a worker is alive, this is the key that indexes it in`cluster.workers`.
+         * @since v0.8.0
+         */
+        id: number;
+        /**
+         * All workers are created using `child_process.fork()`, the returned object
+         * from this function is stored as `.process`. In a worker, the global `process`is stored.
+         *
+         * See: `Child Process module`.
+         *
+         * Workers will call `process.exit(0)` if the `'disconnect'` event occurs
+         * on `process` and `.exitedAfterDisconnect` is not `true`. This protects against
+         * accidental disconnection.
+         * @since v0.7.0
+         */
+        process: child.ChildProcess;
+        /**
+         * Send a message to a worker or primary, optionally with a handle.
+         *
+         * In the primary, this sends a message to a specific worker. It is identical to `ChildProcess.send()`.
+         *
+         * In a worker, this sends a message to the primary. It is identical to`process.send()`.
+         *
+         * This example will echo back all messages from the primary:
+         *
+         * ```js
+         * if (cluster.isPrimary) {
+         *   const worker = cluster.fork();
+         *   worker.send('hi there');
+         *
+         * } else if (cluster.isWorker) {
+         *   process.on('message', (msg) => {
+         *     process.send(msg);
+         *   });
+         * }
+         * ```
+         * @since v0.7.0
+         * @param options The `options` argument, if present, is an object used to parameterize the sending of certain types of handles. `options` supports the following properties:
+         */
+        send(message: child.Serializable, callback?: (error: Error | null) => void): boolean;
+        send(message: child.Serializable, sendHandle: child.SendHandle, callback?: (error: Error | null) => void): boolean;
+        send(message: child.Serializable, sendHandle: child.SendHandle, options?: child.MessageOptions, callback?: (error: Error | null) => void): boolean;
+        /**
+         * This function will kill the worker. In the primary worker, it does this by
+         * disconnecting the `worker.process`, and once disconnected, killing with`signal`. In the worker, it does it by killing the process with `signal`.
+         *
+         * The `kill()` function kills the worker process without waiting for a graceful
+         * disconnect, it has the same behavior as `worker.process.kill()`.
+         *
+         * This method is aliased as `worker.destroy()` for backwards compatibility.
+         *
+         * In a worker, `process.kill()` exists, but it is not this function;
+         * it is `kill()`.
+         * @since v0.9.12
+         * @param [signal='SIGTERM'] Name of the kill signal to send to the worker process.
+         */
+        kill(signal?: string): void;
+        destroy(signal?: string): void;
+        /**
+         * In a worker, this function will close all servers, wait for the `'close'` event
+         * on those servers, and then disconnect the IPC channel.
+         *
+         * In the primary, an internal message is sent to the worker causing it to call`.disconnect()` on itself.
+         *
+         * Causes `.exitedAfterDisconnect` to be set.
+         *
+         * After a server is closed, it will no longer accept new connections,
+         * but connections may be accepted by any other listening worker. Existing
+         * connections will be allowed to close as usual. When no more connections exist,
+         * see `server.close()`, the IPC channel to the worker will close allowing it
+         * to die gracefully.
+         *
+         * The above applies _only_ to server connections, client connections are not
+         * automatically closed by workers, and disconnect does not wait for them to close
+         * before exiting.
+         *
+         * In a worker, `process.disconnect` exists, but it is not this function;
+         * it is `disconnect()`.
+         *
+         * Because long living server connections may block workers from disconnecting, it
+         * may be useful to send a message, so application specific actions may be taken to
+         * close them. It also may be useful to implement a timeout, killing a worker if
+         * the `'disconnect'` event has not been emitted after some time.
+         *
+         * ```js
+         * if (cluster.isPrimary) {
+         *   const worker = cluster.fork();
+         *   let timeout;
+         *
+         *   worker.on('listening', (address) => {
+         *     worker.send('shutdown');
+         *     worker.disconnect();
+         *     timeout = setTimeout(() => {
+         *       worker.kill();
+         *     }, 2000);
+         *   });
+         *
+         *   worker.on('disconnect', () => {
+         *     clearTimeout(timeout);
+         *   });
+         *
+         * } else if (cluster.isWorker) {
+         *   const net = require('net');
+         *   const server = net.createServer((socket) => {
+         *     // Connections never end
+         *   });
+         *
+         *   server.listen(8000);
+         *
+         *   process.on('message', (msg) => {
+         *     if (msg === 'shutdown') {
+         *       // Initiate graceful close of any connections to server
+         *     }
+         *   });
+         * }
+         * ```
+         * @since v0.7.7
+         * @return A reference to `worker`.
+         */
+        disconnect(): void;
+        /**
+         * This function returns `true` if the worker is connected to its primary via its
+         * IPC channel, `false` otherwise. A worker is connected to its primary after it
+         * has been created. It is disconnected after the `'disconnect'` event is emitted.
+         * @since v0.11.14
+         */
+        isConnected(): boolean;
+        /**
+         * This function returns `true` if the worker's process has terminated (either
+         * because of exiting or being signaled). Otherwise, it returns `false`.
+         *
+         * ```js
+         * import cluster from 'cluster';
+         * import http from 'http';
+         * import { cpus } from 'os';
+         * import process from 'process';
+         *
+         * const numCPUs = cpus().length;
+         *
+         * if (cluster.isPrimary) {
+         *   console.log(`Primary ${process.pid} is running`);
+         *
+         *   // Fork workers.
+         *   for (let i = 0; i < numCPUs; i++) {
+         *     cluster.fork();
+         *   }
+         *
+         *   cluster.on('fork', (worker) => {
+         *     console.log('worker is dead:', worker.isDead());
+         *   });
+         *
+         *   cluster.on('exit', (worker, code, signal) => {
+         *     console.log('worker is dead:', worker.isDead());
+         *   });
+         * } else {
+         *   // Workers can share any TCP connection. In this case, it is an HTTP server.
+         *   http.createServer((req, res) => {
+         *     res.writeHead(200);
+         *     res.end(`Current process\n ${process.pid}`);
+         *     process.kill(process.pid);
+         *   }).listen(8000);
+         * }
+         * ```
+         * @since v0.11.14
+         */
+        isDead(): boolean;
+        /**
+         * This property is `true` if the worker exited due to `.disconnect()`.
+         * If the worker exited any other way, it is `false`. If the
+         * worker has not exited, it is `undefined`.
+         *
+         * The boolean `worker.exitedAfterDisconnect` allows distinguishing between
+         * voluntary and accidental exit, the primary may choose not to respawn a worker
+         * based on this value.
+         *
+         * ```js
+         * cluster.on('exit', (worker, code, signal) => {
+         *   if (worker.exitedAfterDisconnect === true) {
+         *     console.log('Oh, it was just voluntary – no need to worry');
+         *   }
+         * });
+         *
+         * // kill worker
+         * worker.kill();
+         * ```
+         * @since v6.0.0
+         */
+        exitedAfterDisconnect: boolean;
+        /**
+         * events.EventEmitter
+         *   1. disconnect
+         *   2. error
+         *   3. exit
+         *   4. listening
+         *   5. message
+         *   6. online
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'disconnect', listener: () => void): this;
+        addListener(event: 'error', listener: (error: Error) => void): this;
+        addListener(event: 'exit', listener: (code: number, signal: string) => void): this;
+        addListener(event: 'listening', listener: (address: Address) => void): this;
+        addListener(event: 'message', listener: (message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        addListener(event: 'online', listener: () => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'disconnect'): boolean;
+        emit(event: 'error', error: Error): boolean;
+        emit(event: 'exit', code: number, signal: string): boolean;
+        emit(event: 'listening', address: Address): boolean;
+        emit(event: 'message', message: any, handle: net.Socket | net.Server): boolean;
+        emit(event: 'online'): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'disconnect', listener: () => void): this;
+        on(event: 'error', listener: (error: Error) => void): this;
+        on(event: 'exit', listener: (code: number, signal: string) => void): this;
+        on(event: 'listening', listener: (address: Address) => void): this;
+        on(event: 'message', listener: (message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        on(event: 'online', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'disconnect', listener: () => void): this;
+        once(event: 'error', listener: (error: Error) => void): this;
+        once(event: 'exit', listener: (code: number, signal: string) => void): this;
+        once(event: 'listening', listener: (address: Address) => void): this;
+        once(event: 'message', listener: (message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        once(event: 'online', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'disconnect', listener: () => void): this;
+        prependListener(event: 'error', listener: (error: Error) => void): this;
+        prependListener(event: 'exit', listener: (code: number, signal: string) => void): this;
+        prependListener(event: 'listening', listener: (address: Address) => void): this;
+        prependListener(event: 'message', listener: (message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        prependListener(event: 'online', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'disconnect', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (error: Error) => void): this;
+        prependOnceListener(event: 'exit', listener: (code: number, signal: string) => void): this;
+        prependOnceListener(event: 'listening', listener: (address: Address) => void): this;
+        prependOnceListener(event: 'message', listener: (message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        prependOnceListener(event: 'online', listener: () => void): this;
+    }
+    export interface Cluster extends EventEmitter {
+        disconnect(callback?: () => void): void;
+        fork(env?: any): Worker;
+        /** @deprecated since v16.0.0 - use isPrimary. */
+        readonly isMaster: boolean;
+        readonly isPrimary: boolean;
+        readonly isWorker: boolean;
+        schedulingPolicy: number;
+        readonly settings: ClusterSettings;
+        /** @deprecated since v16.0.0 - use setupPrimary. */
+        setupMaster(settings?: ClusterSettings): void;
+        /**
+         * `setupPrimary` is used to change the default 'fork' behavior. Once called, the settings will be present in cluster.settings.
+         */
+        setupPrimary(settings?: ClusterSettings): void;
+        readonly worker?: Worker | undefined;
+        readonly workers?: NodeJS.Dict<Worker> | undefined;
+        readonly SCHED_NONE: number;
+        readonly SCHED_RR: number;
+        /**
+         * events.EventEmitter
+         *   1. disconnect
+         *   2. exit
+         *   3. fork
+         *   4. listening
+         *   5. message
+         *   6. online
+         *   7. setup
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'disconnect', listener: (worker: Worker) => void): this;
+        addListener(event: 'exit', listener: (worker: Worker, code: number, signal: string) => void): this;
+        addListener(event: 'fork', listener: (worker: Worker) => void): this;
+        addListener(event: 'listening', listener: (worker: Worker, address: Address) => void): this;
+        addListener(event: 'message', listener: (worker: Worker, message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        addListener(event: 'online', listener: (worker: Worker) => void): this;
+        addListener(event: 'setup', listener: (settings: ClusterSettings) => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'disconnect', worker: Worker): boolean;
+        emit(event: 'exit', worker: Worker, code: number, signal: string): boolean;
+        emit(event: 'fork', worker: Worker): boolean;
+        emit(event: 'listening', worker: Worker, address: Address): boolean;
+        emit(event: 'message', worker: Worker, message: any, handle: net.Socket | net.Server): boolean;
+        emit(event: 'online', worker: Worker): boolean;
+        emit(event: 'setup', settings: ClusterSettings): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'disconnect', listener: (worker: Worker) => void): this;
+        on(event: 'exit', listener: (worker: Worker, code: number, signal: string) => void): this;
+        on(event: 'fork', listener: (worker: Worker) => void): this;
+        on(event: 'listening', listener: (worker: Worker, address: Address) => void): this;
+        on(event: 'message', listener: (worker: Worker, message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        on(event: 'online', listener: (worker: Worker) => void): this;
+        on(event: 'setup', listener: (settings: ClusterSettings) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'disconnect', listener: (worker: Worker) => void): this;
+        once(event: 'exit', listener: (worker: Worker, code: number, signal: string) => void): this;
+        once(event: 'fork', listener: (worker: Worker) => void): this;
+        once(event: 'listening', listener: (worker: Worker, address: Address) => void): this;
+        once(event: 'message', listener: (worker: Worker, message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        once(event: 'online', listener: (worker: Worker) => void): this;
+        once(event: 'setup', listener: (settings: ClusterSettings) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'disconnect', listener: (worker: Worker) => void): this;
+        prependListener(event: 'exit', listener: (worker: Worker, code: number, signal: string) => void): this;
+        prependListener(event: 'fork', listener: (worker: Worker) => void): this;
+        prependListener(event: 'listening', listener: (worker: Worker, address: Address) => void): this;
+        // the handle is a net.Socket or net.Server object, or undefined.
+        prependListener(event: 'message', listener: (worker: Worker, message: any, handle?: net.Socket | net.Server) => void): this;
+        prependListener(event: 'online', listener: (worker: Worker) => void): this;
+        prependListener(event: 'setup', listener: (settings: ClusterSettings) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'disconnect', listener: (worker: Worker) => void): this;
+        prependOnceListener(event: 'exit', listener: (worker: Worker, code: number, signal: string) => void): this;
+        prependOnceListener(event: 'fork', listener: (worker: Worker) => void): this;
+        prependOnceListener(event: 'listening', listener: (worker: Worker, address: Address) => void): this;
+        // the handle is a net.Socket or net.Server object, or undefined.
+        prependOnceListener(event: 'message', listener: (worker: Worker, message: any, handle: net.Socket | net.Server) => void): this;
+        prependOnceListener(event: 'online', listener: (worker: Worker) => void): this;
+        prependOnceListener(event: 'setup', listener: (settings: ClusterSettings) => void): this;
+    }
+    const cluster: Cluster;
+    export default cluster;
+}
+declare module 'node:cluster' {
+    export * from 'cluster';
+    export { default as default } from 'cluster';
+}
diff --git a/igv_component/node_modules/@types/node/console.d.ts b/igv_component/node_modules/@types/node/console.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..16c9137adf20cd8eaad74c61819ff6e300205b7a
--- /dev/null
+++ b/igv_component/node_modules/@types/node/console.d.ts
@@ -0,0 +1,412 @@
+/**
+ * The `console` module provides a simple debugging console that is similar to the
+ * JavaScript console mechanism provided by web browsers.
+ *
+ * The module exports two specific components:
+ *
+ * * A `Console` class with methods such as `console.log()`, `console.error()` and`console.warn()` that can be used to write to any Node.js stream.
+ * * A global `console` instance configured to write to `process.stdout` and `process.stderr`. The global `console` can be used without calling`require('console')`.
+ *
+ * _**Warning**_: The global console object's methods are neither consistently
+ * synchronous like the browser APIs they resemble, nor are they consistently
+ * asynchronous like all other Node.js streams. See the `note on process I/O` for
+ * more information.
+ *
+ * Example using the global `console`:
+ *
+ * ```js
+ * console.log('hello world');
+ * // Prints: hello world, to stdout
+ * console.log('hello %s', 'world');
+ * // Prints: hello world, to stdout
+ * console.error(new Error('Whoops, something bad happened'));
+ * // Prints error message and stack trace to stderr:
+ * //   Error: Whoops, something bad happened
+ * //     at [eval]:5:15
+ * //     at Script.runInThisContext (node:vm:132:18)
+ * //     at Object.runInThisContext (node:vm:309:38)
+ * //     at node:internal/process/execution:77:19
+ * //     at [eval]-wrapper:6:22
+ * //     at evalScript (node:internal/process/execution:76:60)
+ * //     at node:internal/main/eval_string:23:3
+ *
+ * const name = 'Will Robinson';
+ * console.warn(`Danger ${name}! Danger!`);
+ * // Prints: Danger Will Robinson! Danger!, to stderr
+ * ```
+ *
+ * Example using the `Console` class:
+ *
+ * ```js
+ * const out = getStreamSomehow();
+ * const err = getStreamSomehow();
+ * const myConsole = new console.Console(out, err);
+ *
+ * myConsole.log('hello world');
+ * // Prints: hello world, to out
+ * myConsole.log('hello %s', 'world');
+ * // Prints: hello world, to out
+ * myConsole.error(new Error('Whoops, something bad happened'));
+ * // Prints: [Error: Whoops, something bad happened], to err
+ *
+ * const name = 'Will Robinson';
+ * myConsole.warn(`Danger ${name}! Danger!`);
+ * // Prints: Danger Will Robinson! Danger!, to err
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/console.js)
+ */
+declare module 'console' {
+    import console = require('node:console');
+    export = console;
+}
+declare module 'node:console' {
+    import { InspectOptions } from 'node:util';
+    global {
+        // This needs to be global to avoid TS2403 in case lib.dom.d.ts is present in the same build
+        interface Console {
+            Console: console.ConsoleConstructor;
+            /**
+             * `console.assert()` writes a message if `value` is [falsy](https://developer.mozilla.org/en-US/docs/Glossary/Falsy) or omitted. It only
+             * writes a message and does not otherwise affect execution. The output always
+             * starts with `"Assertion failed"`. If provided, `message` is formatted using `util.format()`.
+             *
+             * If `value` is [truthy](https://developer.mozilla.org/en-US/docs/Glossary/Truthy), nothing happens.
+             *
+             * ```js
+             * console.assert(true, 'does nothing');
+             *
+             * console.assert(false, 'Whoops %s work', 'didn\'t');
+             * // Assertion failed: Whoops didn't work
+             *
+             * console.assert();
+             * // Assertion failed
+             * ```
+             * @since v0.1.101
+             * @param value The value tested for being truthy.
+             * @param message All arguments besides `value` are used as error message.
+             */
+            assert(value: any, message?: string, ...optionalParams: any[]): void;
+            /**
+             * When `stdout` is a TTY, calling `console.clear()` will attempt to clear the
+             * TTY. When `stdout` is not a TTY, this method does nothing.
+             *
+             * The specific operation of `console.clear()` can vary across operating systems
+             * and terminal types. For most Linux operating systems, `console.clear()`operates similarly to the `clear` shell command. On Windows, `console.clear()`will clear only the output in the
+             * current terminal viewport for the Node.js
+             * binary.
+             * @since v8.3.0
+             */
+            clear(): void;
+            /**
+             * Maintains an internal counter specific to `label` and outputs to `stdout` the
+             * number of times `console.count()` has been called with the given `label`.
+             *
+             * ```js
+             * > console.count()
+             * default: 1
+             * undefined
+             * > console.count('default')
+             * default: 2
+             * undefined
+             * > console.count('abc')
+             * abc: 1
+             * undefined
+             * > console.count('xyz')
+             * xyz: 1
+             * undefined
+             * > console.count('abc')
+             * abc: 2
+             * undefined
+             * > console.count()
+             * default: 3
+             * undefined
+             * >
+             * ```
+             * @since v8.3.0
+             * @param label The display label for the counter.
+             */
+            count(label?: string): void;
+            /**
+             * Resets the internal counter specific to `label`.
+             *
+             * ```js
+             * > console.count('abc');
+             * abc: 1
+             * undefined
+             * > console.countReset('abc');
+             * undefined
+             * > console.count('abc');
+             * abc: 1
+             * undefined
+             * >
+             * ```
+             * @since v8.3.0
+             * @param label The display label for the counter.
+             */
+            countReset(label?: string): void;
+            /**
+             * The `console.debug()` function is an alias for {@link log}.
+             * @since v8.0.0
+             */
+            debug(message?: any, ...optionalParams: any[]): void;
+            /**
+             * Uses `util.inspect()` on `obj` and prints the resulting string to `stdout`.
+             * This function bypasses any custom `inspect()` function defined on `obj`.
+             * @since v0.1.101
+             */
+            dir(obj: any, options?: InspectOptions): void;
+            /**
+             * This method calls `console.log()` passing it the arguments received.
+             * This method does not produce any XML formatting.
+             * @since v8.0.0
+             */
+            dirxml(...data: any[]): void;
+            /**
+             * Prints to `stderr` with newline. Multiple arguments can be passed, with the
+             * first used as the primary message and all additional used as substitution
+             * values similar to [`printf(3)`](http://man7.org/linux/man-pages/man3/printf.3.html) (the arguments are all passed to `util.format()`).
+             *
+             * ```js
+             * const code = 5;
+             * console.error('error #%d', code);
+             * // Prints: error #5, to stderr
+             * console.error('error', code);
+             * // Prints: error 5, to stderr
+             * ```
+             *
+             * If formatting elements (e.g. `%d`) are not found in the first string then `util.inspect()` is called on each argument and the resulting string
+             * values are concatenated. See `util.format()` for more information.
+             * @since v0.1.100
+             */
+            error(message?: any, ...optionalParams: any[]): void;
+            /**
+             * Increases indentation of subsequent lines by spaces for `groupIndentation`length.
+             *
+             * If one or more `label`s are provided, those are printed first without the
+             * additional indentation.
+             * @since v8.5.0
+             */
+            group(...label: any[]): void;
+            /**
+             * An alias for {@link group}.
+             * @since v8.5.0
+             */
+            groupCollapsed(...label: any[]): void;
+            /**
+             * Decreases indentation of subsequent lines by spaces for `groupIndentation`length.
+             * @since v8.5.0
+             */
+            groupEnd(): void;
+            /**
+             * The `console.info()` function is an alias for {@link log}.
+             * @since v0.1.100
+             */
+            info(message?: any, ...optionalParams: any[]): void;
+            /**
+             * Prints to `stdout` with newline. Multiple arguments can be passed, with the
+             * first used as the primary message and all additional used as substitution
+             * values similar to [`printf(3)`](http://man7.org/linux/man-pages/man3/printf.3.html) (the arguments are all passed to `util.format()`).
+             *
+             * ```js
+             * const count = 5;
+             * console.log('count: %d', count);
+             * // Prints: count: 5, to stdout
+             * console.log('count:', count);
+             * // Prints: count: 5, to stdout
+             * ```
+             *
+             * See `util.format()` for more information.
+             * @since v0.1.100
+             */
+            log(message?: any, ...optionalParams: any[]): void;
+            /**
+             * Try to construct a table with the columns of the properties of `tabularData`(or use `properties`) and rows of `tabularData` and log it. Falls back to just
+             * logging the argument if it can’t be parsed as tabular.
+             *
+             * ```js
+             * // These can't be parsed as tabular data
+             * console.table(Symbol());
+             * // Symbol()
+             *
+             * console.table(undefined);
+             * // undefined
+             *
+             * console.table([{ a: 1, b: 'Y' }, { a: 'Z', b: 2 }]);
+             * // ┌─────────┬─────┬─────┐
+             * // │ (index) │  a  │  b  │
+             * // ├─────────┼─────┼─────┤
+             * // │    0    │  1  │ 'Y' │
+             * // │    1    │ 'Z' │  2  │
+             * // └─────────┴─────┴─────┘
+             *
+             * console.table([{ a: 1, b: 'Y' }, { a: 'Z', b: 2 }], ['a']);
+             * // ┌─────────┬─────┐
+             * // │ (index) │  a  │
+             * // ├─────────┼─────┤
+             * // │    0    │  1  │
+             * // │    1    │ 'Z' │
+             * // └─────────┴─────┘
+             * ```
+             * @since v10.0.0
+             * @param properties Alternate properties for constructing the table.
+             */
+            table(tabularData: any, properties?: ReadonlyArray<string>): void;
+            /**
+             * Starts a timer that can be used to compute the duration of an operation. Timers
+             * are identified by a unique `label`. Use the same `label` when calling {@link timeEnd} to stop the timer and output the elapsed time in
+             * suitable time units to `stdout`. For example, if the elapsed
+             * time is 3869ms, `console.timeEnd()` displays "3.869s".
+             * @since v0.1.104
+             */
+            time(label?: string): void;
+            /**
+             * Stops a timer that was previously started by calling {@link time} and
+             * prints the result to `stdout`:
+             *
+             * ```js
+             * console.time('100-elements');
+             * for (let i = 0; i < 100; i++) {}
+             * console.timeEnd('100-elements');
+             * // prints 100-elements: 225.438ms
+             * ```
+             * @since v0.1.104
+             */
+            timeEnd(label?: string): void;
+            /**
+             * For a timer that was previously started by calling {@link time}, prints
+             * the elapsed time and other `data` arguments to `stdout`:
+             *
+             * ```js
+             * console.time('process');
+             * const value = expensiveProcess1(); // Returns 42
+             * console.timeLog('process', value);
+             * // Prints "process: 365.227ms 42".
+             * doExpensiveProcess2(value);
+             * console.timeEnd('process');
+             * ```
+             * @since v10.7.0
+             */
+            timeLog(label?: string, ...data: any[]): void;
+            /**
+             * Prints to `stderr` the string `'Trace: '`, followed by the `util.format()` formatted message and stack trace to the current position in the code.
+             *
+             * ```js
+             * console.trace('Show me');
+             * // Prints: (stack trace will vary based on where trace is called)
+             * //  Trace: Show me
+             * //    at repl:2:9
+             * //    at REPLServer.defaultEval (repl.js:248:27)
+             * //    at bound (domain.js:287:14)
+             * //    at REPLServer.runBound [as eval] (domain.js:300:12)
+             * //    at REPLServer.<anonymous> (repl.js:412:12)
+             * //    at emitOne (events.js:82:20)
+             * //    at REPLServer.emit (events.js:169:7)
+             * //    at REPLServer.Interface._onLine (readline.js:210:10)
+             * //    at REPLServer.Interface._line (readline.js:549:8)
+             * //    at REPLServer.Interface._ttyWrite (readline.js:826:14)
+             * ```
+             * @since v0.1.104
+             */
+            trace(message?: any, ...optionalParams: any[]): void;
+            /**
+             * The `console.warn()` function is an alias for {@link error}.
+             * @since v0.1.100
+             */
+            warn(message?: any, ...optionalParams: any[]): void;
+            // --- Inspector mode only ---
+            /**
+             * This method does not display anything unless used in the inspector.
+             *  Starts a JavaScript CPU profile with an optional label.
+             */
+            profile(label?: string): void;
+            /**
+             * This method does not display anything unless used in the inspector.
+             *  Stops the current JavaScript CPU profiling session if one has been started and prints the report to the Profiles panel of the inspector.
+             */
+            profileEnd(label?: string): void;
+            /**
+             * This method does not display anything unless used in the inspector.
+             *  Adds an event with the label `label` to the Timeline panel of the inspector.
+             */
+            timeStamp(label?: string): void;
+        }
+        /**
+         * The `console` module provides a simple debugging console that is similar to the
+         * JavaScript console mechanism provided by web browsers.
+         *
+         * The module exports two specific components:
+         *
+         * * A `Console` class with methods such as `console.log()`, `console.error()` and`console.warn()` that can be used to write to any Node.js stream.
+         * * A global `console` instance configured to write to `process.stdout` and `process.stderr`. The global `console` can be used without calling`require('console')`.
+         *
+         * _**Warning**_: The global console object's methods are neither consistently
+         * synchronous like the browser APIs they resemble, nor are they consistently
+         * asynchronous like all other Node.js streams. See the `note on process I/O` for
+         * more information.
+         *
+         * Example using the global `console`:
+         *
+         * ```js
+         * console.log('hello world');
+         * // Prints: hello world, to stdout
+         * console.log('hello %s', 'world');
+         * // Prints: hello world, to stdout
+         * console.error(new Error('Whoops, something bad happened'));
+         * // Prints error message and stack trace to stderr:
+         * //   Error: Whoops, something bad happened
+         * //     at [eval]:5:15
+         * //     at Script.runInThisContext (node:vm:132:18)
+         * //     at Object.runInThisContext (node:vm:309:38)
+         * //     at node:internal/process/execution:77:19
+         * //     at [eval]-wrapper:6:22
+         * //     at evalScript (node:internal/process/execution:76:60)
+         * //     at node:internal/main/eval_string:23:3
+         *
+         * const name = 'Will Robinson';
+         * console.warn(`Danger ${name}! Danger!`);
+         * // Prints: Danger Will Robinson! Danger!, to stderr
+         * ```
+         *
+         * Example using the `Console` class:
+         *
+         * ```js
+         * const out = getStreamSomehow();
+         * const err = getStreamSomehow();
+         * const myConsole = new console.Console(out, err);
+         *
+         * myConsole.log('hello world');
+         * // Prints: hello world, to out
+         * myConsole.log('hello %s', 'world');
+         * // Prints: hello world, to out
+         * myConsole.error(new Error('Whoops, something bad happened'));
+         * // Prints: [Error: Whoops, something bad happened], to err
+         *
+         * const name = 'Will Robinson';
+         * myConsole.warn(`Danger ${name}! Danger!`);
+         * // Prints: Danger Will Robinson! Danger!, to err
+         * ```
+         * @see [source](https://github.com/nodejs/node/blob/v16.4.2/lib/console.js)
+         */
+        namespace console {
+            interface ConsoleConstructorOptions {
+                stdout: NodeJS.WritableStream;
+                stderr?: NodeJS.WritableStream | undefined;
+                ignoreErrors?: boolean | undefined;
+                colorMode?: boolean | 'auto' | undefined;
+                inspectOptions?: InspectOptions | undefined;
+                /**
+                 * Set group indentation
+                 * @default 2
+                 */
+                groupIndentation?: number | undefined;
+            }
+            interface ConsoleConstructor {
+                prototype: Console;
+                new (stdout: NodeJS.WritableStream, stderr?: NodeJS.WritableStream, ignoreErrors?: boolean): Console;
+                new (options: ConsoleConstructorOptions): Console;
+            }
+        }
+        var console: Console;
+    }
+    export = globalThis.console;
+}
diff --git a/igv_component/node_modules/@types/node/constants.d.ts b/igv_component/node_modules/@types/node/constants.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..208020dcbab4ebcd7955b2abcb7ae49185f5976e
--- /dev/null
+++ b/igv_component/node_modules/@types/node/constants.d.ts
@@ -0,0 +1,18 @@
+/** @deprecated since v6.3.0 - use constants property exposed by the relevant module instead. */
+declare module 'constants' {
+    import { constants as osConstants, SignalConstants } from 'node:os';
+    import { constants as cryptoConstants } from 'node:crypto';
+    import { constants as fsConstants } from 'node:fs';
+
+    const exp: typeof osConstants.errno &
+        typeof osConstants.priority &
+        SignalConstants &
+        typeof cryptoConstants &
+        typeof fsConstants;
+    export = exp;
+}
+
+declare module 'node:constants' {
+    import constants = require('constants');
+    export = constants;
+}
diff --git a/igv_component/node_modules/@types/node/crypto.d.ts b/igv_component/node_modules/@types/node/crypto.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6135090b0a13cf82b44b94bbfd6348ce920d7610
--- /dev/null
+++ b/igv_component/node_modules/@types/node/crypto.d.ts
@@ -0,0 +1,3961 @@
+/**
+ * The `crypto` module provides cryptographic functionality that includes a set of
+ * wrappers for OpenSSL's hash, HMAC, cipher, decipher, sign, and verify functions.
+ *
+ * ```js
+ * const { createHmac } = await import('crypto');
+ *
+ * const secret = 'abcdefg';
+ * const hash = createHmac('sha256', secret)
+ *                .update('I love cupcakes')
+ *                .digest('hex');
+ * console.log(hash);
+ * // Prints:
+ * //   c0fa1bc00531bd78ef38c628449c5102aeabd49b5dc3a2a516ea6ea959d6658e
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/crypto.js)
+ */
+declare module 'crypto' {
+    import * as stream from 'node:stream';
+    import { PeerCertificate } from 'node:tls';
+    /**
+     * SPKAC is a Certificate Signing Request mechanism originally implemented by
+     * Netscape and was specified formally as part of [HTML5's `keygen` element](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/keygen).
+     *
+     * `<keygen>` is deprecated since [HTML 5.2](https://www.w3.org/TR/html52/changes.html#features-removed) and new projects
+     * should not use this element anymore.
+     *
+     * The `crypto` module provides the `Certificate` class for working with SPKAC
+     * data. The most common usage is handling output generated by the HTML5`<keygen>` element. Node.js uses [OpenSSL's SPKAC
+     * implementation](https://www.openssl.org/docs/man1.1.0/apps/openssl-spkac.html) internally.
+     * @since v0.11.8
+     */
+    class Certificate {
+        /**
+         * ```js
+         * const { Certificate } = await import('crypto');
+         * const spkac = getSpkacSomehow();
+         * const challenge = Certificate.exportChallenge(spkac);
+         * console.log(challenge.toString('utf8'));
+         * // Prints: the challenge as a UTF8 string
+         * ```
+         * @since v9.0.0
+         * @param encoding The `encoding` of the `spkac` string.
+         * @return The challenge component of the `spkac` data structure, which includes a public key and a challenge.
+         */
+        static exportChallenge(spkac: BinaryLike): Buffer;
+        /**
+         * ```js
+         * const { Certificate } = await import('crypto');
+         * const spkac = getSpkacSomehow();
+         * const publicKey = Certificate.exportPublicKey(spkac);
+         * console.log(publicKey);
+         * // Prints: the public key as <Buffer ...>
+         * ```
+         * @since v9.0.0
+         * @param encoding The `encoding` of the `spkac` string.
+         * @return The public key component of the `spkac` data structure, which includes a public key and a challenge.
+         */
+        static exportPublicKey(spkac: BinaryLike, encoding?: string): Buffer;
+        /**
+         * ```js
+         * import { Buffer } from 'buffer';
+         * const { Certificate } = await import('crypto');
+         *
+         * const spkac = getSpkacSomehow();
+         * console.log(Certificate.verifySpkac(Buffer.from(spkac)));
+         * // Prints: true or false
+         * ```
+         * @since v9.0.0
+         * @param encoding The `encoding` of the `spkac` string.
+         * @return `true` if the given `spkac` data structure is valid, `false` otherwise.
+         */
+        static verifySpkac(spkac: NodeJS.ArrayBufferView): boolean;
+        /**
+         * @deprecated
+         * @param spkac
+         * @returns The challenge component of the `spkac` data structure,
+         * which includes a public key and a challenge.
+         */
+        exportChallenge(spkac: BinaryLike): Buffer;
+        /**
+         * @deprecated
+         * @param spkac
+         * @param encoding The encoding of the spkac string.
+         * @returns The public key component of the `spkac` data structure,
+         * which includes a public key and a challenge.
+         */
+        exportPublicKey(spkac: BinaryLike, encoding?: string): Buffer;
+        /**
+         * @deprecated
+         * @param spkac
+         * @returns `true` if the given `spkac` data structure is valid,
+         * `false` otherwise.
+         */
+        verifySpkac(spkac: NodeJS.ArrayBufferView): boolean;
+    }
+    namespace constants {
+        // https://nodejs.org/dist/latest-v10.x/docs/api/crypto.html#crypto_crypto_constants
+        const OPENSSL_VERSION_NUMBER: number;
+        /** Applies multiple bug workarounds within OpenSSL. See https://www.openssl.org/docs/man1.0.2/ssl/SSL_CTX_set_options.html for detail. */
+        const SSL_OP_ALL: number;
+        /** Allows legacy insecure renegotiation between OpenSSL and unpatched clients or servers. See https://www.openssl.org/docs/man1.0.2/ssl/SSL_CTX_set_options.html. */
+        const SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION: number;
+        /** Attempts to use the server's preferences instead of the client's when selecting a cipher. See https://www.openssl.org/docs/man1.0.2/ssl/SSL_CTX_set_options.html. */
+        const SSL_OP_CIPHER_SERVER_PREFERENCE: number;
+        /** Instructs OpenSSL to use Cisco's "speshul" version of DTLS_BAD_VER. */
+        const SSL_OP_CISCO_ANYCONNECT: number;
+        /** Instructs OpenSSL to turn on cookie exchange. */
+        const SSL_OP_COOKIE_EXCHANGE: number;
+        /** Instructs OpenSSL to add server-hello extension from an early version of the cryptopro draft. */
+        const SSL_OP_CRYPTOPRO_TLSEXT_BUG: number;
+        /** Instructs OpenSSL to disable a SSL 3.0/TLS 1.0 vulnerability workaround added in OpenSSL 0.9.6d. */
+        const SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS: number;
+        /** Instructs OpenSSL to always use the tmp_rsa key when performing RSA operations. */
+        const SSL_OP_EPHEMERAL_RSA: number;
+        /** Allows initial connection to servers that do not support RI. */
+        const SSL_OP_LEGACY_SERVER_CONNECT: number;
+        const SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER: number;
+        const SSL_OP_MICROSOFT_SESS_ID_BUG: number;
+        /** Instructs OpenSSL to disable the workaround for a man-in-the-middle protocol-version vulnerability in the SSL 2.0 server implementation. */
+        const SSL_OP_MSIE_SSLV2_RSA_PADDING: number;
+        const SSL_OP_NETSCAPE_CA_DN_BUG: number;
+        const SSL_OP_NETSCAPE_CHALLENGE_BUG: number;
+        const SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG: number;
+        const SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG: number;
+        /** Instructs OpenSSL to disable support for SSL/TLS compression. */
+        const SSL_OP_NO_COMPRESSION: number;
+        const SSL_OP_NO_QUERY_MTU: number;
+        /** Instructs OpenSSL to always start a new session when performing renegotiation. */
+        const SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION: number;
+        const SSL_OP_NO_SSLv2: number;
+        const SSL_OP_NO_SSLv3: number;
+        const SSL_OP_NO_TICKET: number;
+        const SSL_OP_NO_TLSv1: number;
+        const SSL_OP_NO_TLSv1_1: number;
+        const SSL_OP_NO_TLSv1_2: number;
+        const SSL_OP_PKCS1_CHECK_1: number;
+        const SSL_OP_PKCS1_CHECK_2: number;
+        /** Instructs OpenSSL to always create a new key when using temporary/ephemeral DH parameters. */
+        const SSL_OP_SINGLE_DH_USE: number;
+        /** Instructs OpenSSL to always create a new key when using temporary/ephemeral ECDH parameters. */
+        const SSL_OP_SINGLE_ECDH_USE: number;
+        const SSL_OP_SSLEAY_080_CLIENT_DH_BUG: number;
+        const SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG: number;
+        const SSL_OP_TLS_BLOCK_PADDING_BUG: number;
+        const SSL_OP_TLS_D5_BUG: number;
+        /** Instructs OpenSSL to disable version rollback attack detection. */
+        const SSL_OP_TLS_ROLLBACK_BUG: number;
+        const ENGINE_METHOD_RSA: number;
+        const ENGINE_METHOD_DSA: number;
+        const ENGINE_METHOD_DH: number;
+        const ENGINE_METHOD_RAND: number;
+        const ENGINE_METHOD_EC: number;
+        const ENGINE_METHOD_CIPHERS: number;
+        const ENGINE_METHOD_DIGESTS: number;
+        const ENGINE_METHOD_PKEY_METHS: number;
+        const ENGINE_METHOD_PKEY_ASN1_METHS: number;
+        const ENGINE_METHOD_ALL: number;
+        const ENGINE_METHOD_NONE: number;
+        const DH_CHECK_P_NOT_SAFE_PRIME: number;
+        const DH_CHECK_P_NOT_PRIME: number;
+        const DH_UNABLE_TO_CHECK_GENERATOR: number;
+        const DH_NOT_SUITABLE_GENERATOR: number;
+        const ALPN_ENABLED: number;
+        const RSA_PKCS1_PADDING: number;
+        const RSA_SSLV23_PADDING: number;
+        const RSA_NO_PADDING: number;
+        const RSA_PKCS1_OAEP_PADDING: number;
+        const RSA_X931_PADDING: number;
+        const RSA_PKCS1_PSS_PADDING: number;
+        /** Sets the salt length for RSA_PKCS1_PSS_PADDING to the digest size when signing or verifying. */
+        const RSA_PSS_SALTLEN_DIGEST: number;
+        /** Sets the salt length for RSA_PKCS1_PSS_PADDING to the maximum permissible value when signing data. */
+        const RSA_PSS_SALTLEN_MAX_SIGN: number;
+        /** Causes the salt length for RSA_PKCS1_PSS_PADDING to be determined automatically when verifying a signature. */
+        const RSA_PSS_SALTLEN_AUTO: number;
+        const POINT_CONVERSION_COMPRESSED: number;
+        const POINT_CONVERSION_UNCOMPRESSED: number;
+        const POINT_CONVERSION_HYBRID: number;
+        /** Specifies the built-in default cipher list used by Node.js (colon-separated values). */
+        const defaultCoreCipherList: string;
+        /** Specifies the active default cipher list used by the current Node.js process  (colon-separated values). */
+        const defaultCipherList: string;
+    }
+    interface HashOptions extends stream.TransformOptions {
+        /**
+         * For XOF hash functions such as `shake256`, the
+         * outputLength option can be used to specify the desired output length in bytes.
+         */
+        outputLength?: number | undefined;
+    }
+    /** @deprecated since v10.0.0 */
+    const fips: boolean;
+    /**
+     * Creates and returns a `Hash` object that can be used to generate hash digests
+     * using the given `algorithm`. Optional `options` argument controls stream
+     * behavior. For XOF hash functions such as `'shake256'`, the `outputLength` option
+     * can be used to specify the desired output length in bytes.
+     *
+     * The `algorithm` is dependent on the available algorithms supported by the
+     * version of OpenSSL on the platform. Examples are `'sha256'`, `'sha512'`, etc.
+     * On recent releases of OpenSSL, `openssl list -digest-algorithms` will
+     * display the available digest algorithms.
+     *
+     * Example: generating the sha256 sum of a file
+     *
+     * ```js
+     * import {
+     *   createReadStream
+     * } from 'fs';
+     * import { argv } from 'process';
+     * const {
+     *   createHash
+     * } = await import('crypto');
+     *
+     * const filename = argv[2];
+     *
+     * const hash = createHash('sha256');
+     *
+     * const input = createReadStream(filename);
+     * input.on('readable', () => {
+     *   // Only one element is going to be produced by the
+     *   // hash stream.
+     *   const data = input.read();
+     *   if (data)
+     *     hash.update(data);
+     *   else {
+     *     console.log(`${hash.digest('hex')} ${filename}`);
+     *   }
+     * });
+     * ```
+     * @since v0.1.92
+     * @param options `stream.transform` options
+     */
+    function createHash(algorithm: string, options?: HashOptions): Hash;
+    /**
+     * Creates and returns an `Hmac` object that uses the given `algorithm` and `key`.
+     * Optional `options` argument controls stream behavior.
+     *
+     * The `algorithm` is dependent on the available algorithms supported by the
+     * version of OpenSSL on the platform. Examples are `'sha256'`, `'sha512'`, etc.
+     * On recent releases of OpenSSL, `openssl list -digest-algorithms` will
+     * display the available digest algorithms.
+     *
+     * The `key` is the HMAC key used to generate the cryptographic HMAC hash. If it is
+     * a `KeyObject`, its type must be `secret`.
+     *
+     * Example: generating the sha256 HMAC of a file
+     *
+     * ```js
+     * import {
+     *   createReadStream
+     * } from 'fs';
+     * import { argv } from 'process';
+     * const {
+     *   createHmac
+     * } = await import('crypto');
+     *
+     * const filename = argv[2];
+     *
+     * const hmac = createHmac('sha256', 'a secret');
+     *
+     * const input = createReadStream(filename);
+     * input.on('readable', () => {
+     *   // Only one element is going to be produced by the
+     *   // hash stream.
+     *   const data = input.read();
+     *   if (data)
+     *     hmac.update(data);
+     *   else {
+     *     console.log(`${hmac.digest('hex')} ${filename}`);
+     *   }
+     * });
+     * ```
+     * @since v0.1.94
+     * @param options `stream.transform` options
+     */
+    function createHmac(algorithm: string, key: BinaryLike | KeyObject, options?: stream.TransformOptions): Hmac;
+    // https://nodejs.org/api/buffer.html#buffer_buffers_and_character_encodings
+    type BinaryToTextEncoding = 'base64' | 'base64url' | 'hex' | 'binary';
+    type CharacterEncoding = 'utf8' | 'utf-8' | 'utf16le' | 'latin1';
+    type LegacyCharacterEncoding = 'ascii' | 'binary' | 'ucs2' | 'ucs-2';
+    type Encoding = BinaryToTextEncoding | CharacterEncoding | LegacyCharacterEncoding;
+    type ECDHKeyFormat = 'compressed' | 'uncompressed' | 'hybrid';
+    /**
+     * The `Hash` class is a utility for creating hash digests of data. It can be
+     * used in one of two ways:
+     *
+     * * As a `stream` that is both readable and writable, where data is written
+     * to produce a computed hash digest on the readable side, or
+     * * Using the `hash.update()` and `hash.digest()` methods to produce the
+     * computed hash.
+     *
+     * The {@link createHash} method is used to create `Hash` instances. `Hash`objects are not to be created directly using the `new` keyword.
+     *
+     * Example: Using `Hash` objects as streams:
+     *
+     * ```js
+     * const {
+     *   createHash
+     * } = await import('crypto');
+     *
+     * const hash = createHash('sha256');
+     *
+     * hash.on('readable', () => {
+     *   // Only one element is going to be produced by the
+     *   // hash stream.
+     *   const data = hash.read();
+     *   if (data) {
+     *     console.log(data.toString('hex'));
+     *     // Prints:
+     *     //   6a2da20943931e9834fc12cfe5bb47bbd9ae43489a30726962b576f4e3993e50
+     *   }
+     * });
+     *
+     * hash.write('some data to hash');
+     * hash.end();
+     * ```
+     *
+     * Example: Using `Hash` and piped streams:
+     *
+     * ```js
+     * import { createReadStream } from 'fs';
+     * import { stdout } from 'process';
+     * const { createHash } = await import('crypto');
+     *
+     * const hash = createHash('sha256');
+     *
+     * const input = createReadStream('test.js');
+     * input.pipe(hash).setEncoding('hex').pipe(stdout);
+     * ```
+     *
+     * Example: Using the `hash.update()` and `hash.digest()` methods:
+     *
+     * ```js
+     * const {
+     *   createHash
+     * } = await import('crypto');
+     *
+     * const hash = createHash('sha256');
+     *
+     * hash.update('some data to hash');
+     * console.log(hash.digest('hex'));
+     * // Prints:
+     * //   6a2da20943931e9834fc12cfe5bb47bbd9ae43489a30726962b576f4e3993e50
+     * ```
+     * @since v0.1.92
+     */
+    class Hash extends stream.Transform {
+        private constructor();
+        /**
+         * Creates a new `Hash` object that contains a deep copy of the internal state
+         * of the current `Hash` object.
+         *
+         * The optional `options` argument controls stream behavior. For XOF hash
+         * functions such as `'shake256'`, the `outputLength` option can be used to
+         * specify the desired output length in bytes.
+         *
+         * An error is thrown when an attempt is made to copy the `Hash` object after
+         * its `hash.digest()` method has been called.
+         *
+         * ```js
+         * // Calculate a rolling hash.
+         * const {
+         *   createHash
+         * } = await import('crypto');
+         *
+         * const hash = createHash('sha256');
+         *
+         * hash.update('one');
+         * console.log(hash.copy().digest('hex'));
+         *
+         * hash.update('two');
+         * console.log(hash.copy().digest('hex'));
+         *
+         * hash.update('three');
+         * console.log(hash.copy().digest('hex'));
+         *
+         * // Etc.
+         * ```
+         * @since v13.1.0
+         * @param options `stream.transform` options
+         */
+        copy(options?: stream.TransformOptions): Hash;
+        /**
+         * Updates the hash content with the given `data`, the encoding of which
+         * is given in `inputEncoding`.
+         * If `encoding` is not provided, and the `data` is a string, an
+         * encoding of `'utf8'` is enforced. If `data` is a `Buffer`, `TypedArray`, or`DataView`, then `inputEncoding` is ignored.
+         *
+         * This can be called many times with new data as it is streamed.
+         * @since v0.1.92
+         * @param inputEncoding The `encoding` of the `data` string.
+         */
+        update(data: BinaryLike): Hash;
+        update(data: string, inputEncoding: Encoding): Hash;
+        /**
+         * Calculates the digest of all of the data passed to be hashed (using the `hash.update()` method).
+         * If `encoding` is provided a string will be returned; otherwise
+         * a `Buffer` is returned.
+         *
+         * The `Hash` object can not be used again after `hash.digest()` method has been
+         * called. Multiple calls will cause an error to be thrown.
+         * @since v0.1.92
+         * @param encoding The `encoding` of the return value.
+         */
+        digest(): Buffer;
+        digest(encoding: BinaryToTextEncoding): string;
+    }
+    /**
+     * The `Hmac` class is a utility for creating cryptographic HMAC digests. It can
+     * be used in one of two ways:
+     *
+     * * As a `stream` that is both readable and writable, where data is written
+     * to produce a computed HMAC digest on the readable side, or
+     * * Using the `hmac.update()` and `hmac.digest()` methods to produce the
+     * computed HMAC digest.
+     *
+     * The {@link createHmac} method is used to create `Hmac` instances. `Hmac`objects are not to be created directly using the `new` keyword.
+     *
+     * Example: Using `Hmac` objects as streams:
+     *
+     * ```js
+     * const {
+     *   createHmac
+     * } = await import('crypto');
+     *
+     * const hmac = createHmac('sha256', 'a secret');
+     *
+     * hmac.on('readable', () => {
+     *   // Only one element is going to be produced by the
+     *   // hash stream.
+     *   const data = hmac.read();
+     *   if (data) {
+     *     console.log(data.toString('hex'));
+     *     // Prints:
+     *     //   7fd04df92f636fd450bc841c9418e5825c17f33ad9c87c518115a45971f7f77e
+     *   }
+     * });
+     *
+     * hmac.write('some data to hash');
+     * hmac.end();
+     * ```
+     *
+     * Example: Using `Hmac` and piped streams:
+     *
+     * ```js
+     * import { createReadStream } from 'fs';
+     * import { stdout } from 'process';
+     * const {
+     *   createHmac
+     * } = await import('crypto');
+     *
+     * const hmac = createHmac('sha256', 'a secret');
+     *
+     * const input = createReadStream('test.js');
+     * input.pipe(hmac).pipe(stdout);
+     * ```
+     *
+     * Example: Using the `hmac.update()` and `hmac.digest()` methods:
+     *
+     * ```js
+     * const {
+     *   createHmac
+     * } = await import('crypto');
+     *
+     * const hmac = createHmac('sha256', 'a secret');
+     *
+     * hmac.update('some data to hash');
+     * console.log(hmac.digest('hex'));
+     * // Prints:
+     * //   7fd04df92f636fd450bc841c9418e5825c17f33ad9c87c518115a45971f7f77e
+     * ```
+     * @since v0.1.94
+     */
+    class Hmac extends stream.Transform {
+        private constructor();
+        /**
+         * Updates the `Hmac` content with the given `data`, the encoding of which
+         * is given in `inputEncoding`.
+         * If `encoding` is not provided, and the `data` is a string, an
+         * encoding of `'utf8'` is enforced. If `data` is a `Buffer`, `TypedArray`, or`DataView`, then `inputEncoding` is ignored.
+         *
+         * This can be called many times with new data as it is streamed.
+         * @since v0.1.94
+         * @param inputEncoding The `encoding` of the `data` string.
+         */
+        update(data: BinaryLike): Hmac;
+        update(data: string, inputEncoding: Encoding): Hmac;
+        /**
+         * Calculates the HMAC digest of all of the data passed using `hmac.update()`.
+         * If `encoding` is
+         * provided a string is returned; otherwise a `Buffer` is returned;
+         *
+         * The `Hmac` object can not be used again after `hmac.digest()` has been
+         * called. Multiple calls to `hmac.digest()` will result in an error being thrown.
+         * @since v0.1.94
+         * @param encoding The `encoding` of the return value.
+         */
+        digest(): Buffer;
+        digest(encoding: BinaryToTextEncoding): string;
+    }
+    type KeyObjectType = 'secret' | 'public' | 'private';
+    interface KeyExportOptions<T extends KeyFormat> {
+        type: 'pkcs1' | 'spki' | 'pkcs8' | 'sec1';
+        format: T;
+        cipher?: string | undefined;
+        passphrase?: string | Buffer | undefined;
+    }
+    interface JwkKeyExportOptions {
+        format: 'jwk';
+    }
+    interface JsonWebKey {
+        crv?: string | undefined;
+        d?: string | undefined;
+        dp?: string | undefined;
+        dq?: string | undefined;
+        e?: string | undefined;
+        k?: string | undefined;
+        kty?: string | undefined;
+        n?: string | undefined;
+        p?: string | undefined;
+        q?: string | undefined;
+        qi?: string | undefined;
+        x?: string | undefined;
+        y?: string | undefined;
+        [key: string]: unknown;
+    }
+    interface AsymmetricKeyDetails {
+        /**
+         * Key size in bits (RSA, DSA).
+         */
+        modulusLength?: number | undefined;
+        /**
+         * Public exponent (RSA).
+         */
+        publicExponent?: bigint | undefined;
+        /**
+         * Name of the message digest (RSA-PSS).
+         */
+        hashAlgorithm?: string | undefined;
+        /**
+         * Name of the message digest used by MGF1 (RSA-PSS).
+         */
+        mgf1HashAlgorithm?: string | undefined;
+        /**
+         * Minimal salt length in bytes (RSA-PSS).
+         */
+        saltLength?: number | undefined;
+        /**
+         * Size of q in bits (DSA).
+         */
+        divisorLength?: number | undefined;
+        /**
+         * Name of the curve (EC).
+         */
+        namedCurve?: string | undefined;
+    }
+    /**
+     * Node.js uses a `KeyObject` class to represent a symmetric or asymmetric key,
+     * and each kind of key exposes different functions. The {@link createSecretKey}, {@link createPublicKey} and {@link createPrivateKey} methods are used to create `KeyObject`instances. `KeyObject`
+     * objects are not to be created directly using the `new`keyword.
+     *
+     * Most applications should consider using the new `KeyObject` API instead of
+     * passing keys as strings or `Buffer`s due to improved security features.
+     *
+     * `KeyObject` instances can be passed to other threads via `postMessage()`.
+     * The receiver obtains a cloned `KeyObject`, and the `KeyObject` does not need to
+     * be listed in the `transferList` argument.
+     * @since v11.6.0
+     */
+    class KeyObject {
+        private constructor();
+        /**
+         * Example: Converting a `CryptoKey` instance to a `KeyObject`:
+         *
+         * ```js
+         * const { webcrypto, KeyObject } = await import('crypto');
+         * const { subtle } = webcrypto;
+         *
+         * const key = await subtle.generateKey({
+         *   name: 'HMAC',
+         *   hash: 'SHA-256',
+         *   length: 256
+         * }, true, ['sign', 'verify']);
+         *
+         * const keyObject = KeyObject.from(key);
+         * console.log(keyObject.symmetricKeySize);
+         * // Prints: 32 (symmetric key size in bytes)
+         * ```
+         * @since v15.0.0
+         */
+        static from(key: webcrypto.CryptoKey): KeyObject;
+        /**
+         * For asymmetric keys, this property represents the type of the key. Supported key
+         * types are:
+         *
+         * * `'rsa'` (OID 1.2.840.113549.1.1.1)
+         * * `'rsa-pss'` (OID 1.2.840.113549.1.1.10)
+         * * `'dsa'` (OID 1.2.840.10040.4.1)
+         * * `'ec'` (OID 1.2.840.10045.2.1)
+         * * `'x25519'` (OID 1.3.101.110)
+         * * `'x448'` (OID 1.3.101.111)
+         * * `'ed25519'` (OID 1.3.101.112)
+         * * `'ed448'` (OID 1.3.101.113)
+         * * `'dh'` (OID 1.2.840.113549.1.3.1)
+         *
+         * This property is `undefined` for unrecognized `KeyObject` types and symmetric
+         * keys.
+         * @since v11.6.0
+         */
+        asymmetricKeyType?: KeyType | undefined;
+        /**
+         * For asymmetric keys, this property represents the size of the embedded key in
+         * bytes. This property is `undefined` for symmetric keys.
+         */
+        asymmetricKeySize?: number | undefined;
+        /**
+         * This property exists only on asymmetric keys. Depending on the type of the key,
+         * this object contains information about the key. None of the information obtained
+         * through this property can be used to uniquely identify a key or to compromise
+         * the security of the key.
+         *
+         * For RSA-PSS keys, if the key material contains a `RSASSA-PSS-params` sequence,
+         * the `hashAlgorithm`, `mgf1HashAlgorithm`, and `saltLength` properties will be
+         * set.
+         *
+         * Other key details might be exposed via this API using additional attributes.
+         * @since v15.7.0
+         */
+        asymmetricKeyDetails?: AsymmetricKeyDetails | undefined;
+        /**
+         * For symmetric keys, the following encoding options can be used:
+         *
+         * For public keys, the following encoding options can be used:
+         *
+         * For private keys, the following encoding options can be used:
+         *
+         * The result type depends on the selected encoding format, when PEM the
+         * result is a string, when DER it will be a buffer containing the data
+         * encoded as DER, when [JWK](https://tools.ietf.org/html/rfc7517) it will be an object.
+         *
+         * When [JWK](https://tools.ietf.org/html/rfc7517) encoding format was selected, all other encoding options are
+         * ignored.
+         *
+         * PKCS#1, SEC1, and PKCS#8 type keys can be encrypted by using a combination of
+         * the `cipher` and `format` options. The PKCS#8 `type` can be used with any`format` to encrypt any key algorithm (RSA, EC, or DH) by specifying a`cipher`. PKCS#1 and SEC1 can only be
+         * encrypted by specifying a `cipher`when the PEM `format` is used. For maximum compatibility, use PKCS#8 for
+         * encrypted private keys. Since PKCS#8 defines its own
+         * encryption mechanism, PEM-level encryption is not supported when encrypting
+         * a PKCS#8 key. See [RFC 5208](https://www.rfc-editor.org/rfc/rfc5208.txt) for PKCS#8 encryption and [RFC 1421](https://www.rfc-editor.org/rfc/rfc1421.txt) for
+         * PKCS#1 and SEC1 encryption.
+         * @since v11.6.0
+         */
+        export(options: KeyExportOptions<'pem'>): string | Buffer;
+        export(options?: KeyExportOptions<'der'>): Buffer;
+        export(options?: JwkKeyExportOptions): JsonWebKey;
+        /**
+         * For secret keys, this property represents the size of the key in bytes. This
+         * property is `undefined` for asymmetric keys.
+         * @since v11.6.0
+         */
+        symmetricKeySize?: number | undefined;
+        /**
+         * Depending on the type of this `KeyObject`, this property is either`'secret'` for secret (symmetric) keys, `'public'` for public (asymmetric) keys
+         * or `'private'` for private (asymmetric) keys.
+         * @since v11.6.0
+         */
+        type: KeyObjectType;
+    }
+    type CipherCCMTypes = 'aes-128-ccm' | 'aes-192-ccm' | 'aes-256-ccm' | 'chacha20-poly1305';
+    type CipherGCMTypes = 'aes-128-gcm' | 'aes-192-gcm' | 'aes-256-gcm';
+    type CipherOCBTypes = 'aes-128-ocb' | 'aes-192-ocb' | 'aes-256-ocb';
+    type BinaryLike = string | NodeJS.ArrayBufferView;
+    type CipherKey = BinaryLike | KeyObject;
+    interface CipherCCMOptions extends stream.TransformOptions {
+        authTagLength: number;
+    }
+    interface CipherGCMOptions extends stream.TransformOptions {
+        authTagLength?: number | undefined;
+    }
+    interface CipherOCBOptions extends stream.TransformOptions {
+        authTagLength: number;
+    }
+    /**
+     * Creates and returns a `Cipher` object that uses the given `algorithm` and`password`.
+     *
+     * The `options` argument controls stream behavior and is optional except when a
+     * cipher in CCM or OCB mode (e.g. `'aes-128-ccm'`) is used. In that case, the`authTagLength` option is required and specifies the length of the
+     * authentication tag in bytes, see `CCM mode`. In GCM mode, the `authTagLength`option is not required but can be used to set the length of the authentication
+     * tag that will be returned by `getAuthTag()` and defaults to 16 bytes.
+     * For `chacha20-poly1305`, the `authTagLength` option defaults to 16 bytes.
+     *
+     * The `algorithm` is dependent on OpenSSL, examples are `'aes192'`, etc. On
+     * recent OpenSSL releases, `openssl list -cipher-algorithms` will
+     * display the available cipher algorithms.
+     *
+     * The `password` is used to derive the cipher key and initialization vector (IV).
+     * The value must be either a `'latin1'` encoded string, a `Buffer`, a`TypedArray`, or a `DataView`.
+     *
+     * The implementation of `crypto.createCipher()` derives keys using the OpenSSL
+     * function [`EVP_BytesToKey`](https://www.openssl.org/docs/man1.1.0/crypto/EVP_BytesToKey.html) with the digest algorithm set to MD5, one
+     * iteration, and no salt. The lack of salt allows dictionary attacks as the same
+     * password always creates the same key. The low iteration count and
+     * non-cryptographically secure hash algorithm allow passwords to be tested very
+     * rapidly.
+     *
+     * In line with OpenSSL's recommendation to use a more modern algorithm instead of [`EVP_BytesToKey`](https://www.openssl.org/docs/man1.1.0/crypto/EVP_BytesToKey.html) it is recommended that
+     * developers derive a key and IV on
+     * their own using {@link scrypt} and to use {@link createCipheriv} to create the `Cipher` object. Users should not use ciphers with counter mode
+     * (e.g. CTR, GCM, or CCM) in `crypto.createCipher()`. A warning is emitted when
+     * they are used in order to avoid the risk of IV reuse that causes
+     * vulnerabilities. For the case when IV is reused in GCM, see [Nonce-Disrespecting Adversaries](https://github.com/nonce-disrespect/nonce-disrespect) for details.
+     * @since v0.1.94
+     * @deprecated Since v10.0.0 - Use {@link createCipheriv} instead.
+     * @param options `stream.transform` options
+     */
+    function createCipher(algorithm: CipherCCMTypes, password: BinaryLike, options: CipherCCMOptions): CipherCCM;
+    /** @deprecated since v10.0.0 use `createCipheriv()` */
+    function createCipher(algorithm: CipherGCMTypes, password: BinaryLike, options?: CipherGCMOptions): CipherGCM;
+    /** @deprecated since v10.0.0 use `createCipheriv()` */
+    function createCipher(algorithm: string, password: BinaryLike, options?: stream.TransformOptions): Cipher;
+    /**
+     * Creates and returns a `Cipher` object, with the given `algorithm`, `key` and
+     * initialization vector (`iv`).
+     *
+     * The `options` argument controls stream behavior and is optional except when a
+     * cipher in CCM or OCB mode (e.g. `'aes-128-ccm'`) is used. In that case, the`authTagLength` option is required and specifies the length of the
+     * authentication tag in bytes, see `CCM mode`. In GCM mode, the `authTagLength`option is not required but can be used to set the length of the authentication
+     * tag that will be returned by `getAuthTag()` and defaults to 16 bytes.
+     * For `chacha20-poly1305`, the `authTagLength` option defaults to 16 bytes.
+     *
+     * The `algorithm` is dependent on OpenSSL, examples are `'aes192'`, etc. On
+     * recent OpenSSL releases, `openssl list -cipher-algorithms` will
+     * display the available cipher algorithms.
+     *
+     * The `key` is the raw key used by the `algorithm` and `iv` is an [initialization vector](https://en.wikipedia.org/wiki/Initialization_vector). Both arguments must be `'utf8'` encoded
+     * strings,`Buffers`, `TypedArray`, or `DataView`s. The `key` may optionally be
+     * a `KeyObject` of type `secret`. If the cipher does not need
+     * an initialization vector, `iv` may be `null`.
+     *
+     * When passing strings for `key` or `iv`, please consider `caveats when using strings as inputs to cryptographic APIs`.
+     *
+     * Initialization vectors should be unpredictable and unique; ideally, they will be
+     * cryptographically random. They do not have to be secret: IVs are typically just
+     * added to ciphertext messages unencrypted. It may sound contradictory that
+     * something has to be unpredictable and unique, but does not have to be secret;
+     * remember that an attacker must not be able to predict ahead of time what a
+     * given IV will be.
+     * @since v0.1.94
+     * @param options `stream.transform` options
+     */
+    function createCipheriv(algorithm: CipherCCMTypes, key: CipherKey, iv: BinaryLike, options: CipherCCMOptions): CipherCCM;
+    function createCipheriv(algorithm: CipherOCBTypes, key: CipherKey, iv: BinaryLike, options: CipherOCBOptions): CipherOCB;
+    function createCipheriv(algorithm: CipherGCMTypes, key: CipherKey, iv: BinaryLike, options?: CipherGCMOptions): CipherGCM;
+    function createCipheriv(algorithm: string, key: CipherKey, iv: BinaryLike | null, options?: stream.TransformOptions): Cipher;
+    /**
+     * Instances of the `Cipher` class are used to encrypt data. The class can be
+     * used in one of two ways:
+     *
+     * * As a `stream` that is both readable and writable, where plain unencrypted
+     * data is written to produce encrypted data on the readable side, or
+     * * Using the `cipher.update()` and `cipher.final()` methods to produce
+     * the encrypted data.
+     *
+     * The {@link createCipher} or {@link createCipheriv} methods are
+     * used to create `Cipher` instances. `Cipher` objects are not to be created
+     * directly using the `new` keyword.
+     *
+     * Example: Using `Cipher` objects as streams:
+     *
+     * ```js
+     * const {
+     *   scrypt,
+     *   randomFill,
+     *   createCipheriv
+     * } = await import('crypto');
+     *
+     * const algorithm = 'aes-192-cbc';
+     * const password = 'Password used to generate key';
+     *
+     * // First, we'll generate the key. The key length is dependent on the algorithm.
+     * // In this case for aes192, it is 24 bytes (192 bits).
+     * scrypt(password, 'salt', 24, (err, key) => {
+     *   if (err) throw err;
+     *   // Then, we'll generate a random initialization vector
+     *   randomFill(new Uint8Array(16), (err, iv) => {
+     *     if (err) throw err;
+     *
+     *     // Once we have the key and iv, we can create and use the cipher...
+     *     const cipher = createCipheriv(algorithm, key, iv);
+     *
+     *     let encrypted = '';
+     *     cipher.setEncoding('hex');
+     *
+     *     cipher.on('data', (chunk) => encrypted += chunk);
+     *     cipher.on('end', () => console.log(encrypted));
+     *
+     *     cipher.write('some clear text data');
+     *     cipher.end();
+     *   });
+     * });
+     * ```
+     *
+     * Example: Using `Cipher` and piped streams:
+     *
+     * ```js
+     * import {
+     *   createReadStream,
+     *   createWriteStream,
+     * } from 'fs';
+     *
+     * import {
+     *   pipeline
+     * } from 'stream';
+     *
+     * const {
+     *   scrypt,
+     *   randomFill,
+     *   createCipheriv
+     * } = await import('crypto');
+     *
+     * const algorithm = 'aes-192-cbc';
+     * const password = 'Password used to generate key';
+     *
+     * // First, we'll generate the key. The key length is dependent on the algorithm.
+     * // In this case for aes192, it is 24 bytes (192 bits).
+     * scrypt(password, 'salt', 24, (err, key) => {
+     *   if (err) throw err;
+     *   // Then, we'll generate a random initialization vector
+     *   randomFill(new Uint8Array(16), (err, iv) => {
+     *     if (err) throw err;
+     *
+     *     const cipher = createCipheriv(algorithm, key, iv);
+     *
+     *     const input = createReadStream('test.js');
+     *     const output = createWriteStream('test.enc');
+     *
+     *     pipeline(input, cipher, output, (err) => {
+     *       if (err) throw err;
+     *     });
+     *   });
+     * });
+     * ```
+     *
+     * Example: Using the `cipher.update()` and `cipher.final()` methods:
+     *
+     * ```js
+     * const {
+     *   scrypt,
+     *   randomFill,
+     *   createCipheriv
+     * } = await import('crypto');
+     *
+     * const algorithm = 'aes-192-cbc';
+     * const password = 'Password used to generate key';
+     *
+     * // First, we'll generate the key. The key length is dependent on the algorithm.
+     * // In this case for aes192, it is 24 bytes (192 bits).
+     * scrypt(password, 'salt', 24, (err, key) => {
+     *   if (err) throw err;
+     *   // Then, we'll generate a random initialization vector
+     *   randomFill(new Uint8Array(16), (err, iv) => {
+     *     if (err) throw err;
+     *
+     *     const cipher = createCipheriv(algorithm, key, iv);
+     *
+     *     let encrypted = cipher.update('some clear text data', 'utf8', 'hex');
+     *     encrypted += cipher.final('hex');
+     *     console.log(encrypted);
+     *   });
+     * });
+     * ```
+     * @since v0.1.94
+     */
+    class Cipher extends stream.Transform {
+        private constructor();
+        /**
+         * Updates the cipher with `data`. If the `inputEncoding` argument is given,
+         * the `data`argument is a string using the specified encoding. If the `inputEncoding`argument is not given, `data` must be a `Buffer`, `TypedArray`, or`DataView`. If `data` is a `Buffer`,
+         * `TypedArray`, or `DataView`, then`inputEncoding` is ignored.
+         *
+         * The `outputEncoding` specifies the output format of the enciphered
+         * data. If the `outputEncoding`is specified, a string using the specified encoding is returned. If no`outputEncoding` is provided, a `Buffer` is returned.
+         *
+         * The `cipher.update()` method can be called multiple times with new data until `cipher.final()` is called. Calling `cipher.update()` after `cipher.final()` will result in an error being
+         * thrown.
+         * @since v0.1.94
+         * @param inputEncoding The `encoding` of the data.
+         * @param outputEncoding The `encoding` of the return value.
+         */
+        update(data: BinaryLike): Buffer;
+        update(data: string, inputEncoding: Encoding): Buffer;
+        update(data: NodeJS.ArrayBufferView, inputEncoding: undefined, outputEncoding: Encoding): string;
+        update(data: string, inputEncoding: Encoding | undefined, outputEncoding: Encoding): string;
+        /**
+         * Once the `cipher.final()` method has been called, the `Cipher` object can no
+         * longer be used to encrypt data. Attempts to call `cipher.final()` more than
+         * once will result in an error being thrown.
+         * @since v0.1.94
+         * @param outputEncoding The `encoding` of the return value.
+         * @return Any remaining enciphered contents. If `outputEncoding` is specified, a string is returned. If an `outputEncoding` is not provided, a {@link Buffer} is returned.
+         */
+        final(): Buffer;
+        final(outputEncoding: BufferEncoding): string;
+        /**
+         * When using block encryption algorithms, the `Cipher` class will automatically
+         * add padding to the input data to the appropriate block size. To disable the
+         * default padding call `cipher.setAutoPadding(false)`.
+         *
+         * When `autoPadding` is `false`, the length of the entire input data must be a
+         * multiple of the cipher's block size or `cipher.final()` will throw an error.
+         * Disabling automatic padding is useful for non-standard padding, for instance
+         * using `0x0` instead of PKCS padding.
+         *
+         * The `cipher.setAutoPadding()` method must be called before `cipher.final()`.
+         * @since v0.7.1
+         * @param [autoPadding=true]
+         * @return for method chaining.
+         */
+        setAutoPadding(autoPadding?: boolean): this;
+    }
+    interface CipherCCM extends Cipher {
+        setAAD(
+            buffer: NodeJS.ArrayBufferView,
+            options: {
+                plaintextLength: number;
+            }
+        ): this;
+        getAuthTag(): Buffer;
+    }
+    interface CipherGCM extends Cipher {
+        setAAD(
+            buffer: NodeJS.ArrayBufferView,
+            options?: {
+                plaintextLength: number;
+            }
+        ): this;
+        getAuthTag(): Buffer;
+    }
+    interface CipherOCB extends Cipher {
+        setAAD(
+            buffer: NodeJS.ArrayBufferView,
+            options?: {
+                plaintextLength: number;
+            }
+        ): this;
+        getAuthTag(): Buffer;
+    }
+    /**
+     * Creates and returns a `Decipher` object that uses the given `algorithm` and`password` (key).
+     *
+     * The `options` argument controls stream behavior and is optional except when a
+     * cipher in CCM or OCB mode (e.g. `'aes-128-ccm'`) is used. In that case, the`authTagLength` option is required and specifies the length of the
+     * authentication tag in bytes, see `CCM mode`.
+     * For `chacha20-poly1305`, the `authTagLength` option defaults to 16 bytes.
+     *
+     * The implementation of `crypto.createDecipher()` derives keys using the OpenSSL
+     * function [`EVP_BytesToKey`](https://www.openssl.org/docs/man1.1.0/crypto/EVP_BytesToKey.html) with the digest algorithm set to MD5, one
+     * iteration, and no salt. The lack of salt allows dictionary attacks as the same
+     * password always creates the same key. The low iteration count and
+     * non-cryptographically secure hash algorithm allow passwords to be tested very
+     * rapidly.
+     *
+     * In line with OpenSSL's recommendation to use a more modern algorithm instead of [`EVP_BytesToKey`](https://www.openssl.org/docs/man1.1.0/crypto/EVP_BytesToKey.html) it is recommended that
+     * developers derive a key and IV on
+     * their own using {@link scrypt} and to use {@link createDecipheriv} to create the `Decipher` object.
+     * @since v0.1.94
+     * @deprecated Since v10.0.0 - Use {@link createDecipheriv} instead.
+     * @param options `stream.transform` options
+     */
+    function createDecipher(algorithm: CipherCCMTypes, password: BinaryLike, options: CipherCCMOptions): DecipherCCM;
+    /** @deprecated since v10.0.0 use `createDecipheriv()` */
+    function createDecipher(algorithm: CipherGCMTypes, password: BinaryLike, options?: CipherGCMOptions): DecipherGCM;
+    /** @deprecated since v10.0.0 use `createDecipheriv()` */
+    function createDecipher(algorithm: string, password: BinaryLike, options?: stream.TransformOptions): Decipher;
+    /**
+     * Creates and returns a `Decipher` object that uses the given `algorithm`, `key`and initialization vector (`iv`).
+     *
+     * The `options` argument controls stream behavior and is optional except when a
+     * cipher in CCM or OCB mode (e.g. `'aes-128-ccm'`) is used. In that case, the`authTagLength` option is required and specifies the length of the
+     * authentication tag in bytes, see `CCM mode`. In GCM mode, the `authTagLength`option is not required but can be used to restrict accepted authentication tags
+     * to those with the specified length.
+     * For `chacha20-poly1305`, the `authTagLength` option defaults to 16 bytes.
+     *
+     * The `algorithm` is dependent on OpenSSL, examples are `'aes192'`, etc. On
+     * recent OpenSSL releases, `openssl list -cipher-algorithms` will
+     * display the available cipher algorithms.
+     *
+     * The `key` is the raw key used by the `algorithm` and `iv` is an [initialization vector](https://en.wikipedia.org/wiki/Initialization_vector). Both arguments must be `'utf8'` encoded
+     * strings,`Buffers`, `TypedArray`, or `DataView`s. The `key` may optionally be
+     * a `KeyObject` of type `secret`. If the cipher does not need
+     * an initialization vector, `iv` may be `null`.
+     *
+     * When passing strings for `key` or `iv`, please consider `caveats when using strings as inputs to cryptographic APIs`.
+     *
+     * Initialization vectors should be unpredictable and unique; ideally, they will be
+     * cryptographically random. They do not have to be secret: IVs are typically just
+     * added to ciphertext messages unencrypted. It may sound contradictory that
+     * something has to be unpredictable and unique, but does not have to be secret;
+     * remember that an attacker must not be able to predict ahead of time what a given
+     * IV will be.
+     * @since v0.1.94
+     * @param options `stream.transform` options
+     */
+    function createDecipheriv(algorithm: CipherCCMTypes, key: CipherKey, iv: BinaryLike, options: CipherCCMOptions): DecipherCCM;
+    function createDecipheriv(algorithm: CipherOCBTypes, key: CipherKey, iv: BinaryLike, options: CipherOCBOptions): DecipherOCB;
+    function createDecipheriv(algorithm: CipherGCMTypes, key: CipherKey, iv: BinaryLike, options?: CipherGCMOptions): DecipherGCM;
+    function createDecipheriv(algorithm: string, key: CipherKey, iv: BinaryLike | null, options?: stream.TransformOptions): Decipher;
+    /**
+     * Instances of the `Decipher` class are used to decrypt data. The class can be
+     * used in one of two ways:
+     *
+     * * As a `stream` that is both readable and writable, where plain encrypted
+     * data is written to produce unencrypted data on the readable side, or
+     * * Using the `decipher.update()` and `decipher.final()` methods to
+     * produce the unencrypted data.
+     *
+     * The {@link createDecipher} or {@link createDecipheriv} methods are
+     * used to create `Decipher` instances. `Decipher` objects are not to be created
+     * directly using the `new` keyword.
+     *
+     * Example: Using `Decipher` objects as streams:
+     *
+     * ```js
+     * import { Buffer } from 'buffer';
+     * const {
+     *   scryptSync,
+     *   createDecipheriv
+     * } = await import('crypto');
+     *
+     * const algorithm = 'aes-192-cbc';
+     * const password = 'Password used to generate key';
+     * // Key length is dependent on the algorithm. In this case for aes192, it is
+     * // 24 bytes (192 bits).
+     * // Use the async `crypto.scrypt()` instead.
+     * const key = scryptSync(password, 'salt', 24);
+     * // The IV is usually passed along with the ciphertext.
+     * const iv = Buffer.alloc(16, 0); // Initialization vector.
+     *
+     * const decipher = createDecipheriv(algorithm, key, iv);
+     *
+     * let decrypted = '';
+     * decipher.on('readable', () => {
+     *   while (null !== (chunk = decipher.read())) {
+     *     decrypted += chunk.toString('utf8');
+     *   }
+     * });
+     * decipher.on('end', () => {
+     *   console.log(decrypted);
+     *   // Prints: some clear text data
+     * });
+     *
+     * // Encrypted with same algorithm, key and iv.
+     * const encrypted =
+     *   'e5f79c5915c02171eec6b212d5520d44480993d7d622a7c4c2da32f6efda0ffa';
+     * decipher.write(encrypted, 'hex');
+     * decipher.end();
+     * ```
+     *
+     * Example: Using `Decipher` and piped streams:
+     *
+     * ```js
+     * import {
+     *   createReadStream,
+     *   createWriteStream,
+     * } from 'fs';
+     * import { Buffer } from 'buffer';
+     * const {
+     *   scryptSync,
+     *   createDecipheriv
+     * } = await import('crypto');
+     *
+     * const algorithm = 'aes-192-cbc';
+     * const password = 'Password used to generate key';
+     * // Use the async `crypto.scrypt()` instead.
+     * const key = scryptSync(password, 'salt', 24);
+     * // The IV is usually passed along with the ciphertext.
+     * const iv = Buffer.alloc(16, 0); // Initialization vector.
+     *
+     * const decipher = createDecipheriv(algorithm, key, iv);
+     *
+     * const input = createReadStream('test.enc');
+     * const output = createWriteStream('test.js');
+     *
+     * input.pipe(decipher).pipe(output);
+     * ```
+     *
+     * Example: Using the `decipher.update()` and `decipher.final()` methods:
+     *
+     * ```js
+     * import { Buffer } from 'buffer';
+     * const {
+     *   scryptSync,
+     *   createDecipheriv
+     * } = await import('crypto');
+     *
+     * const algorithm = 'aes-192-cbc';
+     * const password = 'Password used to generate key';
+     * // Use the async `crypto.scrypt()` instead.
+     * const key = scryptSync(password, 'salt', 24);
+     * // The IV is usually passed along with the ciphertext.
+     * const iv = Buffer.alloc(16, 0); // Initialization vector.
+     *
+     * const decipher = createDecipheriv(algorithm, key, iv);
+     *
+     * // Encrypted using same algorithm, key and iv.
+     * const encrypted =
+     *   'e5f79c5915c02171eec6b212d5520d44480993d7d622a7c4c2da32f6efda0ffa';
+     * let decrypted = decipher.update(encrypted, 'hex', 'utf8');
+     * decrypted += decipher.final('utf8');
+     * console.log(decrypted);
+     * // Prints: some clear text data
+     * ```
+     * @since v0.1.94
+     */
+    class Decipher extends stream.Transform {
+        private constructor();
+        /**
+         * Updates the decipher with `data`. If the `inputEncoding` argument is given,
+         * the `data`argument is a string using the specified encoding. If the `inputEncoding`argument is not given, `data` must be a `Buffer`. If `data` is a `Buffer` then `inputEncoding` is
+         * ignored.
+         *
+         * The `outputEncoding` specifies the output format of the enciphered
+         * data. If the `outputEncoding`is specified, a string using the specified encoding is returned. If no`outputEncoding` is provided, a `Buffer` is returned.
+         *
+         * The `decipher.update()` method can be called multiple times with new data until `decipher.final()` is called. Calling `decipher.update()` after `decipher.final()` will result in an error
+         * being thrown.
+         * @since v0.1.94
+         * @param inputEncoding The `encoding` of the `data` string.
+         * @param outputEncoding The `encoding` of the return value.
+         */
+        update(data: NodeJS.ArrayBufferView): Buffer;
+        update(data: string, inputEncoding: Encoding): Buffer;
+        update(data: NodeJS.ArrayBufferView, inputEncoding: undefined, outputEncoding: Encoding): string;
+        update(data: string, inputEncoding: Encoding | undefined, outputEncoding: Encoding): string;
+        /**
+         * Once the `decipher.final()` method has been called, the `Decipher` object can
+         * no longer be used to decrypt data. Attempts to call `decipher.final()` more
+         * than once will result in an error being thrown.
+         * @since v0.1.94
+         * @param outputEncoding The `encoding` of the return value.
+         * @return Any remaining deciphered contents. If `outputEncoding` is specified, a string is returned. If an `outputEncoding` is not provided, a {@link Buffer} is returned.
+         */
+        final(): Buffer;
+        final(outputEncoding: BufferEncoding): string;
+        /**
+         * When data has been encrypted without standard block padding, calling`decipher.setAutoPadding(false)` will disable automatic padding to prevent `decipher.final()` from checking for and
+         * removing padding.
+         *
+         * Turning auto padding off will only work if the input data's length is a
+         * multiple of the ciphers block size.
+         *
+         * The `decipher.setAutoPadding()` method must be called before `decipher.final()`.
+         * @since v0.7.1
+         * @param [autoPadding=true]
+         * @return for method chaining.
+         */
+        setAutoPadding(auto_padding?: boolean): this;
+    }
+    interface DecipherCCM extends Decipher {
+        setAuthTag(buffer: NodeJS.ArrayBufferView): this;
+        setAAD(
+            buffer: NodeJS.ArrayBufferView,
+            options: {
+                plaintextLength: number;
+            }
+        ): this;
+    }
+    interface DecipherGCM extends Decipher {
+        setAuthTag(buffer: NodeJS.ArrayBufferView): this;
+        setAAD(
+            buffer: NodeJS.ArrayBufferView,
+            options?: {
+                plaintextLength: number;
+            }
+        ): this;
+    }
+    interface DecipherOCB extends Decipher {
+        setAuthTag(buffer: NodeJS.ArrayBufferView): this;
+        setAAD(
+            buffer: NodeJS.ArrayBufferView,
+            options?: {
+                plaintextLength: number;
+            }
+        ): this;
+    }
+    interface PrivateKeyInput {
+        key: string | Buffer;
+        format?: KeyFormat | undefined;
+        type?: 'pkcs1' | 'pkcs8' | 'sec1' | undefined;
+        passphrase?: string | Buffer | undefined;
+    }
+    interface PublicKeyInput {
+        key: string | Buffer;
+        format?: KeyFormat | undefined;
+        type?: 'pkcs1' | 'spki' | undefined;
+    }
+    /**
+     * Asynchronously generates a new random secret key of the given `length`. The`type` will determine which validations will be performed on the `length`.
+     *
+     * ```js
+     * const {
+     *   generateKey
+     * } = await import('crypto');
+     *
+     * generateKey('hmac', { length: 64 }, (err, key) => {
+     *   if (err) throw err;
+     *   console.log(key.export().toString('hex'));  // 46e..........620
+     * });
+     * ```
+     * @since v15.0.0
+     * @param type The intended use of the generated secret key. Currently accepted values are `'hmac'` and `'aes'`.
+     */
+    function generateKey(
+        type: 'hmac' | 'aes',
+        options: {
+            length: number;
+        },
+        callback: (err: Error | null, key: KeyObject) => void
+    ): void;
+    /**
+     * Synchronously generates a new random secret key of the given `length`. The`type` will determine which validations will be performed on the `length`.
+     *
+     * ```js
+     * const {
+     *   generateKeySync
+     * } = await import('crypto');
+     *
+     * const key = generateKeySync('hmac', { length: 64 });
+     * console.log(key.export().toString('hex'));  // e89..........41e
+     * ```
+     * @since v15.0.0
+     * @param type The intended use of the generated secret key. Currently accepted values are `'hmac'` and `'aes'`.
+     */
+    function generateKeySync(
+        type: 'hmac' | 'aes',
+        options: {
+            length: number;
+        }
+    ): KeyObject;
+    interface JsonWebKeyInput {
+        key: JsonWebKey;
+        format: 'jwk';
+    }
+    /**
+     * Creates and returns a new key object containing a private key. If `key` is a
+     * string or `Buffer`, `format` is assumed to be `'pem'`; otherwise, `key`must be an object with the properties described above.
+     *
+     * If the private key is encrypted, a `passphrase` must be specified. The length
+     * of the passphrase is limited to 1024 bytes.
+     * @since v11.6.0
+     */
+    function createPrivateKey(key: PrivateKeyInput | string | Buffer | JsonWebKeyInput): KeyObject;
+    /**
+     * Creates and returns a new key object containing a public key. If `key` is a
+     * string or `Buffer`, `format` is assumed to be `'pem'`; if `key` is a `KeyObject`with type `'private'`, the public key is derived from the given private key;
+     * otherwise, `key` must be an object with the properties described above.
+     *
+     * If the format is `'pem'`, the `'key'` may also be an X.509 certificate.
+     *
+     * Because public keys can be derived from private keys, a private key may be
+     * passed instead of a public key. In that case, this function behaves as if {@link createPrivateKey} had been called, except that the type of the
+     * returned `KeyObject` will be `'public'` and that the private key cannot be
+     * extracted from the returned `KeyObject`. Similarly, if a `KeyObject` with type`'private'` is given, a new `KeyObject` with type `'public'` will be returned
+     * and it will be impossible to extract the private key from the returned object.
+     * @since v11.6.0
+     */
+    function createPublicKey(key: PublicKeyInput | string | Buffer | KeyObject | JsonWebKeyInput): KeyObject;
+    /**
+     * Creates and returns a new key object containing a secret key for symmetric
+     * encryption or `Hmac`.
+     * @since v11.6.0
+     * @param encoding The string encoding when `key` is a string.
+     */
+    function createSecretKey(key: NodeJS.ArrayBufferView): KeyObject;
+    function createSecretKey(key: string, encoding: BufferEncoding): KeyObject;
+    /**
+     * Creates and returns a `Sign` object that uses the given `algorithm`. Use {@link getHashes} to obtain the names of the available digest algorithms.
+     * Optional `options` argument controls the `stream.Writable` behavior.
+     *
+     * In some cases, a `Sign` instance can be created using the name of a signature
+     * algorithm, such as `'RSA-SHA256'`, instead of a digest algorithm. This will use
+     * the corresponding digest algorithm. This does not work for all signature
+     * algorithms, such as `'ecdsa-with-SHA256'`, so it is best to always use digest
+     * algorithm names.
+     * @since v0.1.92
+     * @param options `stream.Writable` options
+     */
+    function createSign(algorithm: string, options?: stream.WritableOptions): Sign;
+    type DSAEncoding = 'der' | 'ieee-p1363';
+    interface SigningOptions {
+        /**
+         * @See crypto.constants.RSA_PKCS1_PADDING
+         */
+        padding?: number | undefined;
+        saltLength?: number | undefined;
+        dsaEncoding?: DSAEncoding | undefined;
+    }
+    interface SignPrivateKeyInput extends PrivateKeyInput, SigningOptions {}
+    interface SignKeyObjectInput extends SigningOptions {
+        key: KeyObject;
+    }
+    interface VerifyPublicKeyInput extends PublicKeyInput, SigningOptions {}
+    interface VerifyKeyObjectInput extends SigningOptions {
+        key: KeyObject;
+    }
+    type KeyLike = string | Buffer | KeyObject;
+    /**
+     * The `Sign` class is a utility for generating signatures. It can be used in one
+     * of two ways:
+     *
+     * * As a writable `stream`, where data to be signed is written and the `sign.sign()` method is used to generate and return the signature, or
+     * * Using the `sign.update()` and `sign.sign()` methods to produce the
+     * signature.
+     *
+     * The {@link createSign} method is used to create `Sign` instances. The
+     * argument is the string name of the hash function to use. `Sign` objects are not
+     * to be created directly using the `new` keyword.
+     *
+     * Example: Using `Sign` and `Verify` objects as streams:
+     *
+     * ```js
+     * const {
+     *   generateKeyPairSync,
+     *   createSign,
+     *   createVerify
+     * } = await import('crypto');
+     *
+     * const { privateKey, publicKey } = generateKeyPairSync('ec', {
+     *   namedCurve: 'sect239k1'
+     * });
+     *
+     * const sign = createSign('SHA256');
+     * sign.write('some data to sign');
+     * sign.end();
+     * const signature = sign.sign(privateKey, 'hex');
+     *
+     * const verify = createVerify('SHA256');
+     * verify.write('some data to sign');
+     * verify.end();
+     * console.log(verify.verify(publicKey, signature, 'hex'));
+     * // Prints: true
+     * ```
+     *
+     * Example: Using the `sign.update()` and `verify.update()` methods:
+     *
+     * ```js
+     * const {
+     *   generateKeyPairSync,
+     *   createSign,
+     *   createVerify
+     * } = await import('crypto');
+     *
+     * const { privateKey, publicKey } = generateKeyPairSync('rsa', {
+     *   modulusLength: 2048,
+     * });
+     *
+     * const sign = createSign('SHA256');
+     * sign.update('some data to sign');
+     * sign.end();
+     * const signature = sign.sign(privateKey);
+     *
+     * const verify = createVerify('SHA256');
+     * verify.update('some data to sign');
+     * verify.end();
+     * console.log(verify.verify(publicKey, signature));
+     * // Prints: true
+     * ```
+     * @since v0.1.92
+     */
+    class Sign extends stream.Writable {
+        private constructor();
+        /**
+         * Updates the `Sign` content with the given `data`, the encoding of which
+         * is given in `inputEncoding`.
+         * If `encoding` is not provided, and the `data` is a string, an
+         * encoding of `'utf8'` is enforced. If `data` is a `Buffer`, `TypedArray`, or`DataView`, then `inputEncoding` is ignored.
+         *
+         * This can be called many times with new data as it is streamed.
+         * @since v0.1.92
+         * @param inputEncoding The `encoding` of the `data` string.
+         */
+        update(data: BinaryLike): this;
+        update(data: string, inputEncoding: Encoding): this;
+        /**
+         * Calculates the signature on all the data passed through using either `sign.update()` or `sign.write()`.
+         *
+         * If `privateKey` is not a `KeyObject`, this function behaves as if`privateKey` had been passed to {@link createPrivateKey}. If it is an
+         * object, the following additional properties can be passed:
+         *
+         * If `outputEncoding` is provided a string is returned; otherwise a `Buffer` is returned.
+         *
+         * The `Sign` object can not be again used after `sign.sign()` method has been
+         * called. Multiple calls to `sign.sign()` will result in an error being thrown.
+         * @since v0.1.92
+         */
+        sign(privateKey: KeyLike | SignKeyObjectInput | SignPrivateKeyInput): Buffer;
+        sign(privateKey: KeyLike | SignKeyObjectInput | SignPrivateKeyInput, outputFormat: BinaryToTextEncoding): string;
+    }
+    /**
+     * Creates and returns a `Verify` object that uses the given algorithm.
+     * Use {@link getHashes} to obtain an array of names of the available
+     * signing algorithms. Optional `options` argument controls the`stream.Writable` behavior.
+     *
+     * In some cases, a `Verify` instance can be created using the name of a signature
+     * algorithm, such as `'RSA-SHA256'`, instead of a digest algorithm. This will use
+     * the corresponding digest algorithm. This does not work for all signature
+     * algorithms, such as `'ecdsa-with-SHA256'`, so it is best to always use digest
+     * algorithm names.
+     * @since v0.1.92
+     * @param options `stream.Writable` options
+     */
+    function createVerify(algorithm: string, options?: stream.WritableOptions): Verify;
+    /**
+     * The `Verify` class is a utility for verifying signatures. It can be used in one
+     * of two ways:
+     *
+     * * As a writable `stream` where written data is used to validate against the
+     * supplied signature, or
+     * * Using the `verify.update()` and `verify.verify()` methods to verify
+     * the signature.
+     *
+     * The {@link createVerify} method is used to create `Verify` instances.`Verify` objects are not to be created directly using the `new` keyword.
+     *
+     * See `Sign` for examples.
+     * @since v0.1.92
+     */
+    class Verify extends stream.Writable {
+        private constructor();
+        /**
+         * Updates the `Verify` content with the given `data`, the encoding of which
+         * is given in `inputEncoding`.
+         * If `inputEncoding` is not provided, and the `data` is a string, an
+         * encoding of `'utf8'` is enforced. If `data` is a `Buffer`, `TypedArray`, or`DataView`, then `inputEncoding` is ignored.
+         *
+         * This can be called many times with new data as it is streamed.
+         * @since v0.1.92
+         * @param inputEncoding The `encoding` of the `data` string.
+         */
+        update(data: BinaryLike): Verify;
+        update(data: string, inputEncoding: Encoding): Verify;
+        /**
+         * Verifies the provided data using the given `object` and `signature`.
+         *
+         * If `object` is not a `KeyObject`, this function behaves as if`object` had been passed to {@link createPublicKey}. If it is an
+         * object, the following additional properties can be passed:
+         *
+         * The `signature` argument is the previously calculated signature for the data, in
+         * the `signatureEncoding`.
+         * If a `signatureEncoding` is specified, the `signature` is expected to be a
+         * string; otherwise `signature` is expected to be a `Buffer`,`TypedArray`, or `DataView`.
+         *
+         * The `verify` object can not be used again after `verify.verify()` has been
+         * called. Multiple calls to `verify.verify()` will result in an error being
+         * thrown.
+         *
+         * Because public keys can be derived from private keys, a private key may
+         * be passed instead of a public key.
+         * @since v0.1.92
+         */
+        verify(object: KeyLike | VerifyKeyObjectInput | VerifyPublicKeyInput, signature: NodeJS.ArrayBufferView): boolean;
+        verify(object: KeyLike | VerifyKeyObjectInput | VerifyPublicKeyInput, signature: string, signature_format?: BinaryToTextEncoding): boolean;
+    }
+    /**
+     * Creates a `DiffieHellman` key exchange object using the supplied `prime` and an
+     * optional specific `generator`.
+     *
+     * The `generator` argument can be a number, string, or `Buffer`. If`generator` is not specified, the value `2` is used.
+     *
+     * If `primeEncoding` is specified, `prime` is expected to be a string; otherwise
+     * a `Buffer`, `TypedArray`, or `DataView` is expected.
+     *
+     * If `generatorEncoding` is specified, `generator` is expected to be a string;
+     * otherwise a number, `Buffer`, `TypedArray`, or `DataView` is expected.
+     * @since v0.11.12
+     * @param primeEncoding The `encoding` of the `prime` string.
+     * @param [generator=2]
+     * @param generatorEncoding The `encoding` of the `generator` string.
+     */
+    function createDiffieHellman(primeLength: number, generator?: number): DiffieHellman;
+    function createDiffieHellman(prime: ArrayBuffer | NodeJS.ArrayBufferView, generator?: number | ArrayBuffer | NodeJS.ArrayBufferView): DiffieHellman;
+    function createDiffieHellman(prime: ArrayBuffer | NodeJS.ArrayBufferView, generator: string, generatorEncoding: BinaryToTextEncoding): DiffieHellman;
+    function createDiffieHellman(prime: string, primeEncoding: BinaryToTextEncoding, generator?: number | ArrayBuffer | NodeJS.ArrayBufferView): DiffieHellman;
+    function createDiffieHellman(prime: string, primeEncoding: BinaryToTextEncoding, generator: string, generatorEncoding: BinaryToTextEncoding): DiffieHellman;
+    /**
+     * The `DiffieHellman` class is a utility for creating Diffie-Hellman key
+     * exchanges.
+     *
+     * Instances of the `DiffieHellman` class can be created using the {@link createDiffieHellman} function.
+     *
+     * ```js
+     * import assert from 'assert';
+     *
+     * const {
+     *   createDiffieHellman
+     * } = await import('crypto');
+     *
+     * // Generate Alice's keys...
+     * const alice = createDiffieHellman(2048);
+     * const aliceKey = alice.generateKeys();
+     *
+     * // Generate Bob's keys...
+     * const bob = createDiffieHellman(alice.getPrime(), alice.getGenerator());
+     * const bobKey = bob.generateKeys();
+     *
+     * // Exchange and generate the secret...
+     * const aliceSecret = alice.computeSecret(bobKey);
+     * const bobSecret = bob.computeSecret(aliceKey);
+     *
+     * // OK
+     * assert.strictEqual(aliceSecret.toString('hex'), bobSecret.toString('hex'));
+     * ```
+     * @since v0.5.0
+     */
+    class DiffieHellman {
+        private constructor();
+        /**
+         * Generates private and public Diffie-Hellman key values, and returns
+         * the public key in the specified `encoding`. This key should be
+         * transferred to the other party.
+         * If `encoding` is provided a string is returned; otherwise a `Buffer` is returned.
+         * @since v0.5.0
+         * @param encoding The `encoding` of the return value.
+         */
+        generateKeys(): Buffer;
+        generateKeys(encoding: BinaryToTextEncoding): string;
+        /**
+         * Computes the shared secret using `otherPublicKey` as the other
+         * party's public key and returns the computed shared secret. The supplied
+         * key is interpreted using the specified `inputEncoding`, and secret is
+         * encoded using specified `outputEncoding`.
+         * If the `inputEncoding` is not
+         * provided, `otherPublicKey` is expected to be a `Buffer`,`TypedArray`, or `DataView`.
+         *
+         * If `outputEncoding` is given a string is returned; otherwise, a `Buffer` is returned.
+         * @since v0.5.0
+         * @param inputEncoding The `encoding` of an `otherPublicKey` string.
+         * @param outputEncoding The `encoding` of the return value.
+         */
+        computeSecret(otherPublicKey: NodeJS.ArrayBufferView, inputEncoding?: null, outputEncoding?: null): Buffer;
+        computeSecret(otherPublicKey: string, inputEncoding: BinaryToTextEncoding, outputEncoding?: null): Buffer;
+        computeSecret(otherPublicKey: NodeJS.ArrayBufferView, inputEncoding: null, outputEncoding: BinaryToTextEncoding): string;
+        computeSecret(otherPublicKey: string, inputEncoding: BinaryToTextEncoding, outputEncoding: BinaryToTextEncoding): string;
+        /**
+         * Returns the Diffie-Hellman prime in the specified `encoding`.
+         * If `encoding` is provided a string is
+         * returned; otherwise a `Buffer` is returned.
+         * @since v0.5.0
+         * @param encoding The `encoding` of the return value.
+         */
+        getPrime(): Buffer;
+        getPrime(encoding: BinaryToTextEncoding): string;
+        /**
+         * Returns the Diffie-Hellman generator in the specified `encoding`.
+         * If `encoding` is provided a string is
+         * returned; otherwise a `Buffer` is returned.
+         * @since v0.5.0
+         * @param encoding The `encoding` of the return value.
+         */
+        getGenerator(): Buffer;
+        getGenerator(encoding: BinaryToTextEncoding): string;
+        /**
+         * Returns the Diffie-Hellman public key in the specified `encoding`.
+         * If `encoding` is provided a
+         * string is returned; otherwise a `Buffer` is returned.
+         * @since v0.5.0
+         * @param encoding The `encoding` of the return value.
+         */
+        getPublicKey(): Buffer;
+        getPublicKey(encoding: BinaryToTextEncoding): string;
+        /**
+         * Returns the Diffie-Hellman private key in the specified `encoding`.
+         * If `encoding` is provided a
+         * string is returned; otherwise a `Buffer` is returned.
+         * @since v0.5.0
+         * @param encoding The `encoding` of the return value.
+         */
+        getPrivateKey(): Buffer;
+        getPrivateKey(encoding: BinaryToTextEncoding): string;
+        /**
+         * Sets the Diffie-Hellman public key. If the `encoding` argument is provided,`publicKey` is expected
+         * to be a string. If no `encoding` is provided, `publicKey` is expected
+         * to be a `Buffer`, `TypedArray`, or `DataView`.
+         * @since v0.5.0
+         * @param encoding The `encoding` of the `publicKey` string.
+         */
+        setPublicKey(publicKey: NodeJS.ArrayBufferView): void;
+        setPublicKey(publicKey: string, encoding: BufferEncoding): void;
+        /**
+         * Sets the Diffie-Hellman private key. If the `encoding` argument is provided,`privateKey` is expected
+         * to be a string. If no `encoding` is provided, `privateKey` is expected
+         * to be a `Buffer`, `TypedArray`, or `DataView`.
+         * @since v0.5.0
+         * @param encoding The `encoding` of the `privateKey` string.
+         */
+        setPrivateKey(privateKey: NodeJS.ArrayBufferView): void;
+        setPrivateKey(privateKey: string, encoding: BufferEncoding): void;
+        /**
+         * A bit field containing any warnings and/or errors resulting from a check
+         * performed during initialization of the `DiffieHellman` object.
+         *
+         * The following values are valid for this property (as defined in `constants`module):
+         *
+         * * `DH_CHECK_P_NOT_SAFE_PRIME`
+         * * `DH_CHECK_P_NOT_PRIME`
+         * * `DH_UNABLE_TO_CHECK_GENERATOR`
+         * * `DH_NOT_SUITABLE_GENERATOR`
+         * @since v0.11.12
+         */
+        verifyError: number;
+    }
+    /**
+     * The `DiffieHellmanGroup` class takes a well-known modp group as its argument.
+     * It works the same as `DiffieHellman`, except that it does not allow changing its keys after creation.
+     * In other words, it does not implement `setPublicKey()` or `setPrivateKey()` methods.
+     *
+     * ```js
+     * const { createDiffieHellmanGroup } = await import('node:crypto');
+     * const dh = createDiffieHellmanGroup('modp1');
+     * ```
+     * The name (e.g. `'modp1'`) is taken from [RFC 2412](https://www.rfc-editor.org/rfc/rfc2412.txt) (modp1 and 2) and [RFC 3526](https://www.rfc-editor.org/rfc/rfc3526.txt):
+     * ```bash
+     * $ perl -ne 'print "$1\n" if /"(modp\d+)"/' src/node_crypto_groups.h
+     * modp1  #  768 bits
+     * modp2  # 1024 bits
+     * modp5  # 1536 bits
+     * modp14 # 2048 bits
+     * modp15 # etc.
+     * modp16
+     * modp17
+     * modp18
+     * ```
+     * @since v0.7.5
+     */
+    const DiffieHellmanGroup: DiffieHellmanGroupConstructor;
+    interface DiffieHellmanGroupConstructor {
+        new(name: string): DiffieHellmanGroup;
+        (name: string): DiffieHellmanGroup;
+        readonly prototype: DiffieHellmanGroup;
+    }
+    type DiffieHellmanGroup = Omit<DiffieHellman, 'setPublicKey' | 'setPrivateKey'>;
+    /**
+     * Creates a predefined `DiffieHellmanGroup` key exchange object. The
+     * supported groups are: `'modp1'`, `'modp2'`, `'modp5'` (defined in [RFC 2412](https://www.rfc-editor.org/rfc/rfc2412.txt), but see `Caveats`) and `'modp14'`, `'modp15'`,`'modp16'`, `'modp17'`,
+     * `'modp18'` (defined in [RFC 3526](https://www.rfc-editor.org/rfc/rfc3526.txt)). The
+     * returned object mimics the interface of objects created by {@link createDiffieHellman}, but will not allow changing
+     * the keys (with `diffieHellman.setPublicKey()`, for example). The
+     * advantage of using this method is that the parties do not have to
+     * generate nor exchange a group modulus beforehand, saving both processor
+     * and communication time.
+     *
+     * Example (obtaining a shared secret):
+     *
+     * ```js
+     * const {
+     *   getDiffieHellman
+     * } = await import('crypto');
+     * const alice = getDiffieHellman('modp14');
+     * const bob = getDiffieHellman('modp14');
+     *
+     * alice.generateKeys();
+     * bob.generateKeys();
+     *
+     * const aliceSecret = alice.computeSecret(bob.getPublicKey(), null, 'hex');
+     * const bobSecret = bob.computeSecret(alice.getPublicKey(), null, 'hex');
+     *
+     * // aliceSecret and bobSecret should be the same
+     * console.log(aliceSecret === bobSecret);
+     * ```
+     * @since v0.7.5
+     */
+    function getDiffieHellman(groupName: string): DiffieHellmanGroup;
+    /**
+     * An alias for {@link getDiffieHellman}
+     * @since v0.9.3
+     */
+    function createDiffieHellmanGroup(name: string): DiffieHellmanGroup;
+    /**
+     * Provides an asynchronous Password-Based Key Derivation Function 2 (PBKDF2)
+     * implementation. A selected HMAC digest algorithm specified by `digest` is
+     * applied to derive a key of the requested byte length (`keylen`) from the`password`, `salt` and `iterations`.
+     *
+     * The supplied `callback` function is called with two arguments: `err` and`derivedKey`. If an error occurs while deriving the key, `err` will be set;
+     * otherwise `err` will be `null`. By default, the successfully generated`derivedKey` will be passed to the callback as a `Buffer`. An error will be
+     * thrown if any of the input arguments specify invalid values or types.
+     *
+     * If `digest` is `null`, `'sha1'` will be used. This behavior is deprecated,
+     * please specify a `digest` explicitly.
+     *
+     * The `iterations` argument must be a number set as high as possible. The
+     * higher the number of iterations, the more secure the derived key will be,
+     * but will take a longer amount of time to complete.
+     *
+     * The `salt` should be as unique as possible. It is recommended that a salt is
+     * random and at least 16 bytes long. See [NIST SP 800-132](https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-132.pdf) for details.
+     *
+     * When passing strings for `password` or `salt`, please consider `caveats when using strings as inputs to cryptographic APIs`.
+     *
+     * ```js
+     * const {
+     *   pbkdf2
+     * } = await import('crypto');
+     *
+     * pbkdf2('secret', 'salt', 100000, 64, 'sha512', (err, derivedKey) => {
+     *   if (err) throw err;
+     *   console.log(derivedKey.toString('hex'));  // '3745e48...08d59ae'
+     * });
+     * ```
+     *
+     * The `crypto.DEFAULT_ENCODING` property can be used to change the way the`derivedKey` is passed to the callback. This property, however, has been
+     * deprecated and use should be avoided.
+     *
+     * ```js
+     * import crypto from 'crypto';
+     * crypto.DEFAULT_ENCODING = 'hex';
+     * crypto.pbkdf2('secret', 'salt', 100000, 512, 'sha512', (err, derivedKey) => {
+     *   if (err) throw err;
+     *   console.log(derivedKey);  // '3745e48...aa39b34'
+     * });
+     * ```
+     *
+     * An array of supported digest functions can be retrieved using {@link getHashes}.
+     *
+     * This API uses libuv's threadpool, which can have surprising and
+     * negative performance implications for some applications; see the `UV_THREADPOOL_SIZE` documentation for more information.
+     * @since v0.5.5
+     */
+    function pbkdf2(password: BinaryLike, salt: BinaryLike, iterations: number, keylen: number, digest: string, callback: (err: Error | null, derivedKey: Buffer) => void): void;
+    /**
+     * Provides a synchronous Password-Based Key Derivation Function 2 (PBKDF2)
+     * implementation. A selected HMAC digest algorithm specified by `digest` is
+     * applied to derive a key of the requested byte length (`keylen`) from the`password`, `salt` and `iterations`.
+     *
+     * If an error occurs an `Error` will be thrown, otherwise the derived key will be
+     * returned as a `Buffer`.
+     *
+     * If `digest` is `null`, `'sha1'` will be used. This behavior is deprecated,
+     * please specify a `digest` explicitly.
+     *
+     * The `iterations` argument must be a number set as high as possible. The
+     * higher the number of iterations, the more secure the derived key will be,
+     * but will take a longer amount of time to complete.
+     *
+     * The `salt` should be as unique as possible. It is recommended that a salt is
+     * random and at least 16 bytes long. See [NIST SP 800-132](https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-132.pdf) for details.
+     *
+     * When passing strings for `password` or `salt`, please consider `caveats when using strings as inputs to cryptographic APIs`.
+     *
+     * ```js
+     * const {
+     *   pbkdf2Sync
+     * } = await import('crypto');
+     *
+     * const key = pbkdf2Sync('secret', 'salt', 100000, 64, 'sha512');
+     * console.log(key.toString('hex'));  // '3745e48...08d59ae'
+     * ```
+     *
+     * The `crypto.DEFAULT_ENCODING` property may be used to change the way the`derivedKey` is returned. This property, however, is deprecated and use
+     * should be avoided.
+     *
+     * ```js
+     * import crypto from 'crypto';
+     * crypto.DEFAULT_ENCODING = 'hex';
+     * const key = crypto.pbkdf2Sync('secret', 'salt', 100000, 512, 'sha512');
+     * console.log(key);  // '3745e48...aa39b34'
+     * ```
+     *
+     * An array of supported digest functions can be retrieved using {@link getHashes}.
+     * @since v0.9.3
+     */
+    function pbkdf2Sync(password: BinaryLike, salt: BinaryLike, iterations: number, keylen: number, digest: string): Buffer;
+    /**
+     * Generates cryptographically strong pseudorandom data. The `size` argument
+     * is a number indicating the number of bytes to generate.
+     *
+     * If a `callback` function is provided, the bytes are generated asynchronously
+     * and the `callback` function is invoked with two arguments: `err` and `buf`.
+     * If an error occurs, `err` will be an `Error` object; otherwise it is `null`. The`buf` argument is a `Buffer` containing the generated bytes.
+     *
+     * ```js
+     * // Asynchronous
+     * const {
+     *   randomBytes
+     * } = await import('crypto');
+     *
+     * randomBytes(256, (err, buf) => {
+     *   if (err) throw err;
+     *   console.log(`${buf.length} bytes of random data: ${buf.toString('hex')}`);
+     * });
+     * ```
+     *
+     * If the `callback` function is not provided, the random bytes are generated
+     * synchronously and returned as a `Buffer`. An error will be thrown if
+     * there is a problem generating the bytes.
+     *
+     * ```js
+     * // Synchronous
+     * const {
+     *   randomBytes
+     * } = await import('crypto');
+     *
+     * const buf = randomBytes(256);
+     * console.log(
+     *   `${buf.length} bytes of random data: ${buf.toString('hex')}`);
+     * ```
+     *
+     * The `crypto.randomBytes()` method will not complete until there is
+     * sufficient entropy available.
+     * This should normally never take longer than a few milliseconds. The only time
+     * when generating the random bytes may conceivably block for a longer period of
+     * time is right after boot, when the whole system is still low on entropy.
+     *
+     * This API uses libuv's threadpool, which can have surprising and
+     * negative performance implications for some applications; see the `UV_THREADPOOL_SIZE` documentation for more information.
+     *
+     * The asynchronous version of `crypto.randomBytes()` is carried out in a single
+     * threadpool request. To minimize threadpool task length variation, partition
+     * large `randomBytes` requests when doing so as part of fulfilling a client
+     * request.
+     * @since v0.5.8
+     * @param size The number of bytes to generate. The `size` must not be larger than `2**31 - 1`.
+     * @return if the `callback` function is not provided.
+     */
+    function randomBytes(size: number): Buffer;
+    function randomBytes(size: number, callback: (err: Error | null, buf: Buffer) => void): void;
+    function pseudoRandomBytes(size: number): Buffer;
+    function pseudoRandomBytes(size: number, callback: (err: Error | null, buf: Buffer) => void): void;
+    /**
+     * Return a random integer `n` such that `min <= n < max`.  This
+     * implementation avoids [modulo bias](https://en.wikipedia.org/wiki/Fisher%E2%80%93Yates_shuffle#Modulo_bias).
+     *
+     * The range (`max - min`) must be less than 248. `min` and `max` must
+     * be [safe integers](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isSafeInteger).
+     *
+     * If the `callback` function is not provided, the random integer is
+     * generated synchronously.
+     *
+     * ```js
+     * // Asynchronous
+     * const {
+     *   randomInt
+     * } = await import('crypto');
+     *
+     * randomInt(3, (err, n) => {
+     *   if (err) throw err;
+     *   console.log(`Random number chosen from (0, 1, 2): ${n}`);
+     * });
+     * ```
+     *
+     * ```js
+     * // Synchronous
+     * const {
+     *   randomInt
+     * } = await import('crypto');
+     *
+     * const n = randomInt(3);
+     * console.log(`Random number chosen from (0, 1, 2): ${n}`);
+     * ```
+     *
+     * ```js
+     * // With `min` argument
+     * const {
+     *   randomInt
+     * } = await import('crypto');
+     *
+     * const n = randomInt(1, 7);
+     * console.log(`The dice rolled: ${n}`);
+     * ```
+     * @since v14.10.0, v12.19.0
+     * @param [min=0] Start of random range (inclusive).
+     * @param max End of random range (exclusive).
+     * @param callback `function(err, n) {}`.
+     */
+    function randomInt(max: number): number;
+    function randomInt(min: number, max: number): number;
+    function randomInt(max: number, callback: (err: Error | null, value: number) => void): void;
+    function randomInt(min: number, max: number, callback: (err: Error | null, value: number) => void): void;
+    /**
+     * Synchronous version of {@link randomFill}.
+     *
+     * ```js
+     * import { Buffer } from 'buffer';
+     * const { randomFillSync } = await import('crypto');
+     *
+     * const buf = Buffer.alloc(10);
+     * console.log(randomFillSync(buf).toString('hex'));
+     *
+     * randomFillSync(buf, 5);
+     * console.log(buf.toString('hex'));
+     *
+     * // The above is equivalent to the following:
+     * randomFillSync(buf, 5, 5);
+     * console.log(buf.toString('hex'));
+     * ```
+     *
+     * Any `ArrayBuffer`, `TypedArray` or `DataView` instance may be passed as`buffer`.
+     *
+     * ```js
+     * import { Buffer } from 'buffer';
+     * const { randomFillSync } = await import('crypto');
+     *
+     * const a = new Uint32Array(10);
+     * console.log(Buffer.from(randomFillSync(a).buffer,
+     *                         a.byteOffset, a.byteLength).toString('hex'));
+     *
+     * const b = new DataView(new ArrayBuffer(10));
+     * console.log(Buffer.from(randomFillSync(b).buffer,
+     *                         b.byteOffset, b.byteLength).toString('hex'));
+     *
+     * const c = new ArrayBuffer(10);
+     * console.log(Buffer.from(randomFillSync(c)).toString('hex'));
+     * ```
+     * @since v7.10.0, v6.13.0
+     * @param buffer Must be supplied. The size of the provided `buffer` must not be larger than `2**31 - 1`.
+     * @param [offset=0]
+     * @param [size=buffer.length - offset]
+     * @return The object passed as `buffer` argument.
+     */
+    function randomFillSync<T extends NodeJS.ArrayBufferView>(buffer: T, offset?: number, size?: number): T;
+    /**
+     * This function is similar to {@link randomBytes} but requires the first
+     * argument to be a `Buffer` that will be filled. It also
+     * requires that a callback is passed in.
+     *
+     * If the `callback` function is not provided, an error will be thrown.
+     *
+     * ```js
+     * import { Buffer } from 'buffer';
+     * const { randomFill } = await import('crypto');
+     *
+     * const buf = Buffer.alloc(10);
+     * randomFill(buf, (err, buf) => {
+     *   if (err) throw err;
+     *   console.log(buf.toString('hex'));
+     * });
+     *
+     * randomFill(buf, 5, (err, buf) => {
+     *   if (err) throw err;
+     *   console.log(buf.toString('hex'));
+     * });
+     *
+     * // The above is equivalent to the following:
+     * randomFill(buf, 5, 5, (err, buf) => {
+     *   if (err) throw err;
+     *   console.log(buf.toString('hex'));
+     * });
+     * ```
+     *
+     * Any `ArrayBuffer`, `TypedArray`, or `DataView` instance may be passed as`buffer`.
+     *
+     * While this includes instances of `Float32Array` and `Float64Array`, this
+     * function should not be used to generate random floating-point numbers. The
+     * result may contain `+Infinity`, `-Infinity`, and `NaN`, and even if the array
+     * contains finite numbers only, they are not drawn from a uniform random
+     * distribution and have no meaningful lower or upper bounds.
+     *
+     * ```js
+     * import { Buffer } from 'buffer';
+     * const { randomFill } = await import('crypto');
+     *
+     * const a = new Uint32Array(10);
+     * randomFill(a, (err, buf) => {
+     *   if (err) throw err;
+     *   console.log(Buffer.from(buf.buffer, buf.byteOffset, buf.byteLength)
+     *     .toString('hex'));
+     * });
+     *
+     * const b = new DataView(new ArrayBuffer(10));
+     * randomFill(b, (err, buf) => {
+     *   if (err) throw err;
+     *   console.log(Buffer.from(buf.buffer, buf.byteOffset, buf.byteLength)
+     *     .toString('hex'));
+     * });
+     *
+     * const c = new ArrayBuffer(10);
+     * randomFill(c, (err, buf) => {
+     *   if (err) throw err;
+     *   console.log(Buffer.from(buf).toString('hex'));
+     * });
+     * ```
+     *
+     * This API uses libuv's threadpool, which can have surprising and
+     * negative performance implications for some applications; see the `UV_THREADPOOL_SIZE` documentation for more information.
+     *
+     * The asynchronous version of `crypto.randomFill()` is carried out in a single
+     * threadpool request. To minimize threadpool task length variation, partition
+     * large `randomFill` requests when doing so as part of fulfilling a client
+     * request.
+     * @since v7.10.0, v6.13.0
+     * @param buffer Must be supplied. The size of the provided `buffer` must not be larger than `2**31 - 1`.
+     * @param [offset=0]
+     * @param [size=buffer.length - offset]
+     * @param callback `function(err, buf) {}`.
+     */
+    function randomFill<T extends NodeJS.ArrayBufferView>(buffer: T, callback: (err: Error | null, buf: T) => void): void;
+    function randomFill<T extends NodeJS.ArrayBufferView>(buffer: T, offset: number, callback: (err: Error | null, buf: T) => void): void;
+    function randomFill<T extends NodeJS.ArrayBufferView>(buffer: T, offset: number, size: number, callback: (err: Error | null, buf: T) => void): void;
+    interface ScryptOptions {
+        cost?: number | undefined;
+        blockSize?: number | undefined;
+        parallelization?: number | undefined;
+        N?: number | undefined;
+        r?: number | undefined;
+        p?: number | undefined;
+        maxmem?: number | undefined;
+    }
+    /**
+     * Provides an asynchronous [scrypt](https://en.wikipedia.org/wiki/Scrypt) implementation. Scrypt is a password-based
+     * key derivation function that is designed to be expensive computationally and
+     * memory-wise in order to make brute-force attacks unrewarding.
+     *
+     * The `salt` should be as unique as possible. It is recommended that a salt is
+     * random and at least 16 bytes long. See [NIST SP 800-132](https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-132.pdf) for details.
+     *
+     * When passing strings for `password` or `salt`, please consider `caveats when using strings as inputs to cryptographic APIs`.
+     *
+     * The `callback` function is called with two arguments: `err` and `derivedKey`.`err` is an exception object when key derivation fails, otherwise `err` is`null`. `derivedKey` is passed to the
+     * callback as a `Buffer`.
+     *
+     * An exception is thrown when any of the input arguments specify invalid values
+     * or types.
+     *
+     * ```js
+     * const {
+     *   scrypt
+     * } = await import('crypto');
+     *
+     * // Using the factory defaults.
+     * scrypt('password', 'salt', 64, (err, derivedKey) => {
+     *   if (err) throw err;
+     *   console.log(derivedKey.toString('hex'));  // '3745e48...08d59ae'
+     * });
+     * // Using a custom N parameter. Must be a power of two.
+     * scrypt('password', 'salt', 64, { N: 1024 }, (err, derivedKey) => {
+     *   if (err) throw err;
+     *   console.log(derivedKey.toString('hex'));  // '3745e48...aa39b34'
+     * });
+     * ```
+     * @since v10.5.0
+     */
+    function scrypt(password: BinaryLike, salt: BinaryLike, keylen: number, callback: (err: Error | null, derivedKey: Buffer) => void): void;
+    function scrypt(password: BinaryLike, salt: BinaryLike, keylen: number, options: ScryptOptions, callback: (err: Error | null, derivedKey: Buffer) => void): void;
+    /**
+     * Provides a synchronous [scrypt](https://en.wikipedia.org/wiki/Scrypt) implementation. Scrypt is a password-based
+     * key derivation function that is designed to be expensive computationally and
+     * memory-wise in order to make brute-force attacks unrewarding.
+     *
+     * The `salt` should be as unique as possible. It is recommended that a salt is
+     * random and at least 16 bytes long. See [NIST SP 800-132](https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-132.pdf) for details.
+     *
+     * When passing strings for `password` or `salt`, please consider `caveats when using strings as inputs to cryptographic APIs`.
+     *
+     * An exception is thrown when key derivation fails, otherwise the derived key is
+     * returned as a `Buffer`.
+     *
+     * An exception is thrown when any of the input arguments specify invalid values
+     * or types.
+     *
+     * ```js
+     * const {
+     *   scryptSync
+     * } = await import('crypto');
+     * // Using the factory defaults.
+     *
+     * const key1 = scryptSync('password', 'salt', 64);
+     * console.log(key1.toString('hex'));  // '3745e48...08d59ae'
+     * // Using a custom N parameter. Must be a power of two.
+     * const key2 = scryptSync('password', 'salt', 64, { N: 1024 });
+     * console.log(key2.toString('hex'));  // '3745e48...aa39b34'
+     * ```
+     * @since v10.5.0
+     */
+    function scryptSync(password: BinaryLike, salt: BinaryLike, keylen: number, options?: ScryptOptions): Buffer;
+    interface RsaPublicKey {
+        key: KeyLike;
+        padding?: number | undefined;
+    }
+    interface RsaPrivateKey {
+        key: KeyLike;
+        passphrase?: string | undefined;
+        /**
+         * @default 'sha1'
+         */
+        oaepHash?: string | undefined;
+        oaepLabel?: NodeJS.TypedArray | undefined;
+        padding?: number | undefined;
+    }
+    /**
+     * Encrypts the content of `buffer` with `key` and returns a new `Buffer` with encrypted content. The returned data can be decrypted using
+     * the corresponding private key, for example using {@link privateDecrypt}.
+     *
+     * If `key` is not a `KeyObject`, this function behaves as if`key` had been passed to {@link createPublicKey}. If it is an
+     * object, the `padding` property can be passed. Otherwise, this function uses`RSA_PKCS1_OAEP_PADDING`.
+     *
+     * Because RSA public keys can be derived from private keys, a private key may
+     * be passed instead of a public key.
+     * @since v0.11.14
+     */
+    function publicEncrypt(key: RsaPublicKey | RsaPrivateKey | KeyLike, buffer: NodeJS.ArrayBufferView): Buffer;
+    /**
+     * Decrypts `buffer` with `key`.`buffer` was previously encrypted using
+     * the corresponding private key, for example using {@link privateEncrypt}.
+     *
+     * If `key` is not a `KeyObject`, this function behaves as if`key` had been passed to {@link createPublicKey}. If it is an
+     * object, the `padding` property can be passed. Otherwise, this function uses`RSA_PKCS1_PADDING`.
+     *
+     * Because RSA public keys can be derived from private keys, a private key may
+     * be passed instead of a public key.
+     * @since v1.1.0
+     */
+    function publicDecrypt(key: RsaPublicKey | RsaPrivateKey | KeyLike, buffer: NodeJS.ArrayBufferView): Buffer;
+    /**
+     * Decrypts `buffer` with `privateKey`. `buffer` was previously encrypted using
+     * the corresponding public key, for example using {@link publicEncrypt}.
+     *
+     * If `privateKey` is not a `KeyObject`, this function behaves as if`privateKey` had been passed to {@link createPrivateKey}. If it is an
+     * object, the `padding` property can be passed. Otherwise, this function uses`RSA_PKCS1_OAEP_PADDING`.
+     * @since v0.11.14
+     */
+    function privateDecrypt(privateKey: RsaPrivateKey | KeyLike, buffer: NodeJS.ArrayBufferView): Buffer;
+    /**
+     * Encrypts `buffer` with `privateKey`. The returned data can be decrypted using
+     * the corresponding public key, for example using {@link publicDecrypt}.
+     *
+     * If `privateKey` is not a `KeyObject`, this function behaves as if`privateKey` had been passed to {@link createPrivateKey}. If it is an
+     * object, the `padding` property can be passed. Otherwise, this function uses`RSA_PKCS1_PADDING`.
+     * @since v1.1.0
+     */
+    function privateEncrypt(privateKey: RsaPrivateKey | KeyLike, buffer: NodeJS.ArrayBufferView): Buffer;
+    /**
+     * ```js
+     * const {
+     *   getCiphers
+     * } = await import('crypto');
+     *
+     * console.log(getCiphers()); // ['aes-128-cbc', 'aes-128-ccm', ...]
+     * ```
+     * @since v0.9.3
+     * @return An array with the names of the supported cipher algorithms.
+     */
+    function getCiphers(): string[];
+    /**
+     * ```js
+     * const {
+     *   getCurves
+     * } = await import('crypto');
+     *
+     * console.log(getCurves()); // ['Oakley-EC2N-3', 'Oakley-EC2N-4', ...]
+     * ```
+     * @since v2.3.0
+     * @return An array with the names of the supported elliptic curves.
+     */
+    function getCurves(): string[];
+    /**
+     * @since v10.0.0
+     * @return `1` if and only if a FIPS compliant crypto provider is currently in use, `0` otherwise. A future semver-major release may change the return type of this API to a {boolean}.
+     */
+    function getFips(): 1 | 0;
+    /**
+     * Enables the FIPS compliant crypto provider in a FIPS-enabled Node.js build. Throws an error if FIPS mode is not available.
+     * @since v10.0.0
+     * @param bool `true` to enable FIPS mode.
+     */
+    function setFips(bool: boolean): void;
+    /**
+     * ```js
+     * const {
+     *   getHashes
+     * } = await import('crypto');
+     *
+     * console.log(getHashes()); // ['DSA', 'DSA-SHA', 'DSA-SHA1', ...]
+     * ```
+     * @since v0.9.3
+     * @return An array of the names of the supported hash algorithms, such as `'RSA-SHA256'`. Hash algorithms are also called "digest" algorithms.
+     */
+    function getHashes(): string[];
+    /**
+     * The `ECDH` class is a utility for creating Elliptic Curve Diffie-Hellman (ECDH)
+     * key exchanges.
+     *
+     * Instances of the `ECDH` class can be created using the {@link createECDH} function.
+     *
+     * ```js
+     * import assert from 'assert';
+     *
+     * const {
+     *   createECDH
+     * } = await import('crypto');
+     *
+     * // Generate Alice's keys...
+     * const alice = createECDH('secp521r1');
+     * const aliceKey = alice.generateKeys();
+     *
+     * // Generate Bob's keys...
+     * const bob = createECDH('secp521r1');
+     * const bobKey = bob.generateKeys();
+     *
+     * // Exchange and generate the secret...
+     * const aliceSecret = alice.computeSecret(bobKey);
+     * const bobSecret = bob.computeSecret(aliceKey);
+     *
+     * assert.strictEqual(aliceSecret.toString('hex'), bobSecret.toString('hex'));
+     * // OK
+     * ```
+     * @since v0.11.14
+     */
+    class ECDH {
+        private constructor();
+        /**
+         * Converts the EC Diffie-Hellman public key specified by `key` and `curve` to the
+         * format specified by `format`. The `format` argument specifies point encoding
+         * and can be `'compressed'`, `'uncompressed'` or `'hybrid'`. The supplied key is
+         * interpreted using the specified `inputEncoding`, and the returned key is encoded
+         * using the specified `outputEncoding`.
+         *
+         * Use {@link getCurves} to obtain a list of available curve names.
+         * On recent OpenSSL releases, `openssl ecparam -list_curves` will also display
+         * the name and description of each available elliptic curve.
+         *
+         * If `format` is not specified the point will be returned in `'uncompressed'`format.
+         *
+         * If the `inputEncoding` is not provided, `key` is expected to be a `Buffer`,`TypedArray`, or `DataView`.
+         *
+         * Example (uncompressing a key):
+         *
+         * ```js
+         * const {
+         *   createECDH,
+         *   ECDH
+         * } = await import('crypto');
+         *
+         * const ecdh = createECDH('secp256k1');
+         * ecdh.generateKeys();
+         *
+         * const compressedKey = ecdh.getPublicKey('hex', 'compressed');
+         *
+         * const uncompressedKey = ECDH.convertKey(compressedKey,
+         *                                         'secp256k1',
+         *                                         'hex',
+         *                                         'hex',
+         *                                         'uncompressed');
+         *
+         * // The converted key and the uncompressed public key should be the same
+         * console.log(uncompressedKey === ecdh.getPublicKey('hex'));
+         * ```
+         * @since v10.0.0
+         * @param inputEncoding The `encoding` of the `key` string.
+         * @param outputEncoding The `encoding` of the return value.
+         * @param [format='uncompressed']
+         */
+        static convertKey(
+            key: BinaryLike,
+            curve: string,
+            inputEncoding?: BinaryToTextEncoding,
+            outputEncoding?: 'latin1' | 'hex' | 'base64' | 'base64url',
+            format?: 'uncompressed' | 'compressed' | 'hybrid'
+        ): Buffer | string;
+        /**
+         * Generates private and public EC Diffie-Hellman key values, and returns
+         * the public key in the specified `format` and `encoding`. This key should be
+         * transferred to the other party.
+         *
+         * The `format` argument specifies point encoding and can be `'compressed'` or`'uncompressed'`. If `format` is not specified, the point will be returned in`'uncompressed'` format.
+         *
+         * If `encoding` is provided a string is returned; otherwise a `Buffer` is returned.
+         * @since v0.11.14
+         * @param encoding The `encoding` of the return value.
+         * @param [format='uncompressed']
+         */
+        generateKeys(): Buffer;
+        generateKeys(encoding: BinaryToTextEncoding, format?: ECDHKeyFormat): string;
+        /**
+         * Computes the shared secret using `otherPublicKey` as the other
+         * party's public key and returns the computed shared secret. The supplied
+         * key is interpreted using specified `inputEncoding`, and the returned secret
+         * is encoded using the specified `outputEncoding`.
+         * If the `inputEncoding` is not
+         * provided, `otherPublicKey` is expected to be a `Buffer`, `TypedArray`, or`DataView`.
+         *
+         * If `outputEncoding` is given a string will be returned; otherwise a `Buffer` is returned.
+         *
+         * `ecdh.computeSecret` will throw an`ERR_CRYPTO_ECDH_INVALID_PUBLIC_KEY` error when `otherPublicKey`lies outside of the elliptic curve. Since `otherPublicKey` is
+         * usually supplied from a remote user over an insecure network,
+         * be sure to handle this exception accordingly.
+         * @since v0.11.14
+         * @param inputEncoding The `encoding` of the `otherPublicKey` string.
+         * @param outputEncoding The `encoding` of the return value.
+         */
+        computeSecret(otherPublicKey: NodeJS.ArrayBufferView): Buffer;
+        computeSecret(otherPublicKey: string, inputEncoding: BinaryToTextEncoding): Buffer;
+        computeSecret(otherPublicKey: NodeJS.ArrayBufferView, outputEncoding: BinaryToTextEncoding): string;
+        computeSecret(otherPublicKey: string, inputEncoding: BinaryToTextEncoding, outputEncoding: BinaryToTextEncoding): string;
+        /**
+         * If `encoding` is specified, a string is returned; otherwise a `Buffer` is
+         * returned.
+         * @since v0.11.14
+         * @param encoding The `encoding` of the return value.
+         * @return The EC Diffie-Hellman in the specified `encoding`.
+         */
+        getPrivateKey(): Buffer;
+        getPrivateKey(encoding: BinaryToTextEncoding): string;
+        /**
+         * The `format` argument specifies point encoding and can be `'compressed'` or`'uncompressed'`. If `format` is not specified the point will be returned in`'uncompressed'` format.
+         *
+         * If `encoding` is specified, a string is returned; otherwise a `Buffer` is
+         * returned.
+         * @since v0.11.14
+         * @param [encoding] The `encoding` of the return value.
+         * @param [format='uncompressed']
+         * @return The EC Diffie-Hellman public key in the specified `encoding` and `format`.
+         */
+        getPublicKey(encoding?: null, format?: ECDHKeyFormat): Buffer;
+        getPublicKey(encoding: BinaryToTextEncoding, format?: ECDHKeyFormat): string;
+        /**
+         * Sets the EC Diffie-Hellman private key.
+         * If `encoding` is provided, `privateKey` is expected
+         * to be a string; otherwise `privateKey` is expected to be a `Buffer`,`TypedArray`, or `DataView`.
+         *
+         * If `privateKey` is not valid for the curve specified when the `ECDH` object was
+         * created, an error is thrown. Upon setting the private key, the associated
+         * public point (key) is also generated and set in the `ECDH` object.
+         * @since v0.11.14
+         * @param encoding The `encoding` of the `privateKey` string.
+         */
+        setPrivateKey(privateKey: NodeJS.ArrayBufferView): void;
+        setPrivateKey(privateKey: string, encoding: BinaryToTextEncoding): void;
+    }
+    /**
+     * Creates an Elliptic Curve Diffie-Hellman (`ECDH`) key exchange object using a
+     * predefined curve specified by the `curveName` string. Use {@link getCurves} to obtain a list of available curve names. On recent
+     * OpenSSL releases, `openssl ecparam -list_curves` will also display the name
+     * and description of each available elliptic curve.
+     * @since v0.11.14
+     */
+    function createECDH(curveName: string): ECDH;
+    /**
+     * This function is based on a constant-time algorithm.
+     * Returns true if `a` is equal to `b`, without leaking timing information that
+     * would allow an attacker to guess one of the values. This is suitable for
+     * comparing HMAC digests or secret values like authentication cookies or [capability urls](https://www.w3.org/TR/capability-urls/).
+     *
+     * `a` and `b` must both be `Buffer`s, `TypedArray`s, or `DataView`s, and they
+     * must have the same byte length. An error is thrown if `a` and `b` have
+     * different byte lengths.
+     *
+     * If at least one of `a` and `b` is a `TypedArray` with more than one byte per
+     * entry, such as `Uint16Array`, the result will be computed using the platform
+     * byte order.
+     *
+     * Use of `crypto.timingSafeEqual` does not guarantee that the _surrounding_ code
+     * is timing-safe. Care should be taken to ensure that the surrounding code does
+     * not introduce timing vulnerabilities.
+     * @since v6.6.0
+     */
+    function timingSafeEqual(a: NodeJS.ArrayBufferView, b: NodeJS.ArrayBufferView): boolean;
+    /** @deprecated since v10.0.0 */
+    const DEFAULT_ENCODING: BufferEncoding;
+    type KeyType = 'rsa' | 'rsa-pss' | 'dsa' | 'ec' | 'ed25519' | 'ed448' | 'x25519' | 'x448';
+    type KeyFormat = 'pem' | 'der';
+    interface BasePrivateKeyEncodingOptions<T extends KeyFormat> {
+        format: T;
+        cipher?: string | undefined;
+        passphrase?: string | undefined;
+    }
+    interface KeyPairKeyObjectResult {
+        publicKey: KeyObject;
+        privateKey: KeyObject;
+    }
+    interface ED25519KeyPairKeyObjectOptions {}
+    interface ED448KeyPairKeyObjectOptions {}
+    interface X25519KeyPairKeyObjectOptions {}
+    interface X448KeyPairKeyObjectOptions {}
+    interface ECKeyPairKeyObjectOptions {
+        /**
+         * Name of the curve to use
+         */
+        namedCurve: string;
+    }
+    interface RSAKeyPairKeyObjectOptions {
+        /**
+         * Key size in bits
+         */
+        modulusLength: number;
+        /**
+         * Public exponent
+         * @default 0x10001
+         */
+        publicExponent?: number | undefined;
+    }
+    interface RSAPSSKeyPairKeyObjectOptions {
+        /**
+         * Key size in bits
+         */
+        modulusLength: number;
+        /**
+         * Public exponent
+         * @default 0x10001
+         */
+        publicExponent?: number | undefined;
+        /**
+         * Name of the message digest
+         */
+        hashAlgorithm?: string;
+        /**
+         * Name of the message digest used by MGF1
+         */
+        mgf1HashAlgorithm?: string;
+        /**
+         * Minimal salt length in bytes
+         */
+        saltLength?: string;
+    }
+    interface DSAKeyPairKeyObjectOptions {
+        /**
+         * Key size in bits
+         */
+        modulusLength: number;
+        /**
+         * Size of q in bits
+         */
+        divisorLength: number;
+    }
+    interface RSAKeyPairOptions<PubF extends KeyFormat, PrivF extends KeyFormat> {
+        /**
+         * Key size in bits
+         */
+        modulusLength: number;
+        /**
+         * Public exponent
+         * @default 0x10001
+         */
+        publicExponent?: number | undefined;
+        publicKeyEncoding: {
+            type: 'pkcs1' | 'spki';
+            format: PubF;
+        };
+        privateKeyEncoding: BasePrivateKeyEncodingOptions<PrivF> & {
+            type: 'pkcs1' | 'pkcs8';
+        };
+    }
+    interface RSAPSSKeyPairOptions<PubF extends KeyFormat, PrivF extends KeyFormat> {
+        /**
+         * Key size in bits
+         */
+        modulusLength: number;
+        /**
+         * Public exponent
+         * @default 0x10001
+         */
+        publicExponent?: number | undefined;
+        /**
+         * Name of the message digest
+         */
+        hashAlgorithm?: string;
+        /**
+         * Name of the message digest used by MGF1
+         */
+        mgf1HashAlgorithm?: string;
+        /**
+         * Minimal salt length in bytes
+         */
+        saltLength?: string;
+        publicKeyEncoding: {
+            type: 'spki';
+            format: PubF;
+        };
+        privateKeyEncoding: BasePrivateKeyEncodingOptions<PrivF> & {
+            type: 'pkcs8';
+        };
+    }
+    interface DSAKeyPairOptions<PubF extends KeyFormat, PrivF extends KeyFormat> {
+        /**
+         * Key size in bits
+         */
+        modulusLength: number;
+        /**
+         * Size of q in bits
+         */
+        divisorLength: number;
+        publicKeyEncoding: {
+            type: 'spki';
+            format: PubF;
+        };
+        privateKeyEncoding: BasePrivateKeyEncodingOptions<PrivF> & {
+            type: 'pkcs8';
+        };
+    }
+    interface ECKeyPairOptions<PubF extends KeyFormat, PrivF extends KeyFormat> {
+        /**
+         * Name of the curve to use.
+         */
+        namedCurve: string;
+        publicKeyEncoding: {
+            type: 'pkcs1' | 'spki';
+            format: PubF;
+        };
+        privateKeyEncoding: BasePrivateKeyEncodingOptions<PrivF> & {
+            type: 'sec1' | 'pkcs8';
+        };
+    }
+    interface ED25519KeyPairOptions<PubF extends KeyFormat, PrivF extends KeyFormat> {
+        publicKeyEncoding: {
+            type: 'spki';
+            format: PubF;
+        };
+        privateKeyEncoding: BasePrivateKeyEncodingOptions<PrivF> & {
+            type: 'pkcs8';
+        };
+    }
+    interface ED448KeyPairOptions<PubF extends KeyFormat, PrivF extends KeyFormat> {
+        publicKeyEncoding: {
+            type: 'spki';
+            format: PubF;
+        };
+        privateKeyEncoding: BasePrivateKeyEncodingOptions<PrivF> & {
+            type: 'pkcs8';
+        };
+    }
+    interface X25519KeyPairOptions<PubF extends KeyFormat, PrivF extends KeyFormat> {
+        publicKeyEncoding: {
+            type: 'spki';
+            format: PubF;
+        };
+        privateKeyEncoding: BasePrivateKeyEncodingOptions<PrivF> & {
+            type: 'pkcs8';
+        };
+    }
+    interface X448KeyPairOptions<PubF extends KeyFormat, PrivF extends KeyFormat> {
+        publicKeyEncoding: {
+            type: 'spki';
+            format: PubF;
+        };
+        privateKeyEncoding: BasePrivateKeyEncodingOptions<PrivF> & {
+            type: 'pkcs8';
+        };
+    }
+    interface KeyPairSyncResult<T1 extends string | Buffer, T2 extends string | Buffer> {
+        publicKey: T1;
+        privateKey: T2;
+    }
+    /**
+     * Generates a new asymmetric key pair of the given `type`. RSA, RSA-PSS, DSA, EC,
+     * Ed25519, Ed448, X25519, X448, and DH are currently supported.
+     *
+     * If a `publicKeyEncoding` or `privateKeyEncoding` was specified, this function
+     * behaves as if `keyObject.export()` had been called on its result. Otherwise,
+     * the respective part of the key is returned as a `KeyObject`.
+     *
+     * When encoding public keys, it is recommended to use `'spki'`. When encoding
+     * private keys, it is recommended to use `'pkcs8'` with a strong passphrase,
+     * and to keep the passphrase confidential.
+     *
+     * ```js
+     * const {
+     *   generateKeyPairSync
+     * } = await import('crypto');
+     *
+     * const {
+     *   publicKey,
+     *   privateKey,
+     * } = generateKeyPairSync('rsa', {
+     *   modulusLength: 4096,
+     *   publicKeyEncoding: {
+     *     type: 'spki',
+     *     format: 'pem'
+     *   },
+     *   privateKeyEncoding: {
+     *     type: 'pkcs8',
+     *     format: 'pem',
+     *     cipher: 'aes-256-cbc',
+     *     passphrase: 'top secret'
+     *   }
+     * });
+     * ```
+     *
+     * The return value `{ publicKey, privateKey }` represents the generated key pair.
+     * When PEM encoding was selected, the respective key will be a string, otherwise
+     * it will be a buffer containing the data encoded as DER.
+     * @since v10.12.0
+     * @param type Must be `'rsa'`, `'rsa-pss'`, `'dsa'`, `'ec'`, `'ed25519'`, `'ed448'`, `'x25519'`, `'x448'`, or `'dh'`.
+     */
+    function generateKeyPairSync(type: 'rsa', options: RSAKeyPairOptions<'pem', 'pem'>): KeyPairSyncResult<string, string>;
+    function generateKeyPairSync(type: 'rsa', options: RSAKeyPairOptions<'pem', 'der'>): KeyPairSyncResult<string, Buffer>;
+    function generateKeyPairSync(type: 'rsa', options: RSAKeyPairOptions<'der', 'pem'>): KeyPairSyncResult<Buffer, string>;
+    function generateKeyPairSync(type: 'rsa', options: RSAKeyPairOptions<'der', 'der'>): KeyPairSyncResult<Buffer, Buffer>;
+    function generateKeyPairSync(type: 'rsa', options: RSAKeyPairKeyObjectOptions): KeyPairKeyObjectResult;
+    function generateKeyPairSync(type: 'rsa-pss', options: RSAPSSKeyPairOptions<'pem', 'pem'>): KeyPairSyncResult<string, string>;
+    function generateKeyPairSync(type: 'rsa-pss', options: RSAPSSKeyPairOptions<'pem', 'der'>): KeyPairSyncResult<string, Buffer>;
+    function generateKeyPairSync(type: 'rsa-pss', options: RSAPSSKeyPairOptions<'der', 'pem'>): KeyPairSyncResult<Buffer, string>;
+    function generateKeyPairSync(type: 'rsa-pss', options: RSAPSSKeyPairOptions<'der', 'der'>): KeyPairSyncResult<Buffer, Buffer>;
+    function generateKeyPairSync(type: 'rsa-pss', options: RSAPSSKeyPairKeyObjectOptions): KeyPairKeyObjectResult;
+    function generateKeyPairSync(type: 'dsa', options: DSAKeyPairOptions<'pem', 'pem'>): KeyPairSyncResult<string, string>;
+    function generateKeyPairSync(type: 'dsa', options: DSAKeyPairOptions<'pem', 'der'>): KeyPairSyncResult<string, Buffer>;
+    function generateKeyPairSync(type: 'dsa', options: DSAKeyPairOptions<'der', 'pem'>): KeyPairSyncResult<Buffer, string>;
+    function generateKeyPairSync(type: 'dsa', options: DSAKeyPairOptions<'der', 'der'>): KeyPairSyncResult<Buffer, Buffer>;
+    function generateKeyPairSync(type: 'dsa', options: DSAKeyPairKeyObjectOptions): KeyPairKeyObjectResult;
+    function generateKeyPairSync(type: 'ec', options: ECKeyPairOptions<'pem', 'pem'>): KeyPairSyncResult<string, string>;
+    function generateKeyPairSync(type: 'ec', options: ECKeyPairOptions<'pem', 'der'>): KeyPairSyncResult<string, Buffer>;
+    function generateKeyPairSync(type: 'ec', options: ECKeyPairOptions<'der', 'pem'>): KeyPairSyncResult<Buffer, string>;
+    function generateKeyPairSync(type: 'ec', options: ECKeyPairOptions<'der', 'der'>): KeyPairSyncResult<Buffer, Buffer>;
+    function generateKeyPairSync(type: 'ec', options: ECKeyPairKeyObjectOptions): KeyPairKeyObjectResult;
+    function generateKeyPairSync(type: 'ed25519', options: ED25519KeyPairOptions<'pem', 'pem'>): KeyPairSyncResult<string, string>;
+    function generateKeyPairSync(type: 'ed25519', options: ED25519KeyPairOptions<'pem', 'der'>): KeyPairSyncResult<string, Buffer>;
+    function generateKeyPairSync(type: 'ed25519', options: ED25519KeyPairOptions<'der', 'pem'>): KeyPairSyncResult<Buffer, string>;
+    function generateKeyPairSync(type: 'ed25519', options: ED25519KeyPairOptions<'der', 'der'>): KeyPairSyncResult<Buffer, Buffer>;
+    function generateKeyPairSync(type: 'ed25519', options?: ED25519KeyPairKeyObjectOptions): KeyPairKeyObjectResult;
+    function generateKeyPairSync(type: 'ed448', options: ED448KeyPairOptions<'pem', 'pem'>): KeyPairSyncResult<string, string>;
+    function generateKeyPairSync(type: 'ed448', options: ED448KeyPairOptions<'pem', 'der'>): KeyPairSyncResult<string, Buffer>;
+    function generateKeyPairSync(type: 'ed448', options: ED448KeyPairOptions<'der', 'pem'>): KeyPairSyncResult<Buffer, string>;
+    function generateKeyPairSync(type: 'ed448', options: ED448KeyPairOptions<'der', 'der'>): KeyPairSyncResult<Buffer, Buffer>;
+    function generateKeyPairSync(type: 'ed448', options?: ED448KeyPairKeyObjectOptions): KeyPairKeyObjectResult;
+    function generateKeyPairSync(type: 'x25519', options: X25519KeyPairOptions<'pem', 'pem'>): KeyPairSyncResult<string, string>;
+    function generateKeyPairSync(type: 'x25519', options: X25519KeyPairOptions<'pem', 'der'>): KeyPairSyncResult<string, Buffer>;
+    function generateKeyPairSync(type: 'x25519', options: X25519KeyPairOptions<'der', 'pem'>): KeyPairSyncResult<Buffer, string>;
+    function generateKeyPairSync(type: 'x25519', options: X25519KeyPairOptions<'der', 'der'>): KeyPairSyncResult<Buffer, Buffer>;
+    function generateKeyPairSync(type: 'x25519', options?: X25519KeyPairKeyObjectOptions): KeyPairKeyObjectResult;
+    function generateKeyPairSync(type: 'x448', options: X448KeyPairOptions<'pem', 'pem'>): KeyPairSyncResult<string, string>;
+    function generateKeyPairSync(type: 'x448', options: X448KeyPairOptions<'pem', 'der'>): KeyPairSyncResult<string, Buffer>;
+    function generateKeyPairSync(type: 'x448', options: X448KeyPairOptions<'der', 'pem'>): KeyPairSyncResult<Buffer, string>;
+    function generateKeyPairSync(type: 'x448', options: X448KeyPairOptions<'der', 'der'>): KeyPairSyncResult<Buffer, Buffer>;
+    function generateKeyPairSync(type: 'x448', options?: X448KeyPairKeyObjectOptions): KeyPairKeyObjectResult;
+    /**
+     * Generates a new asymmetric key pair of the given `type`. RSA, RSA-PSS, DSA, EC,
+     * Ed25519, Ed448, X25519, X448, and DH are currently supported.
+     *
+     * If a `publicKeyEncoding` or `privateKeyEncoding` was specified, this function
+     * behaves as if `keyObject.export()` had been called on its result. Otherwise,
+     * the respective part of the key is returned as a `KeyObject`.
+     *
+     * It is recommended to encode public keys as `'spki'` and private keys as`'pkcs8'` with encryption for long-term storage:
+     *
+     * ```js
+     * const {
+     *   generateKeyPair
+     * } = await import('crypto');
+     *
+     * generateKeyPair('rsa', {
+     *   modulusLength: 4096,
+     *   publicKeyEncoding: {
+     *     type: 'spki',
+     *     format: 'pem'
+     *   },
+     *   privateKeyEncoding: {
+     *     type: 'pkcs8',
+     *     format: 'pem',
+     *     cipher: 'aes-256-cbc',
+     *     passphrase: 'top secret'
+     *   }
+     * }, (err, publicKey, privateKey) => {
+     *   // Handle errors and use the generated key pair.
+     * });
+     * ```
+     *
+     * On completion, `callback` will be called with `err` set to `undefined` and`publicKey` / `privateKey` representing the generated key pair.
+     *
+     * If this method is invoked as its `util.promisify()` ed version, it returns
+     * a `Promise` for an `Object` with `publicKey` and `privateKey` properties.
+     * @since v10.12.0
+     * @param type Must be `'rsa'`, `'rsa-pss'`, `'dsa'`, `'ec'`, `'ed25519'`, `'ed448'`, `'x25519'`, `'x448'`, or `'dh'`.
+     */
+    function generateKeyPair(type: 'rsa', options: RSAKeyPairOptions<'pem', 'pem'>, callback: (err: Error | null, publicKey: string, privateKey: string) => void): void;
+    function generateKeyPair(type: 'rsa', options: RSAKeyPairOptions<'pem', 'der'>, callback: (err: Error | null, publicKey: string, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'rsa', options: RSAKeyPairOptions<'der', 'pem'>, callback: (err: Error | null, publicKey: Buffer, privateKey: string) => void): void;
+    function generateKeyPair(type: 'rsa', options: RSAKeyPairOptions<'der', 'der'>, callback: (err: Error | null, publicKey: Buffer, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'rsa', options: RSAKeyPairKeyObjectOptions, callback: (err: Error | null, publicKey: KeyObject, privateKey: KeyObject) => void): void;
+    function generateKeyPair(type: 'rsa-pss', options: RSAPSSKeyPairOptions<'pem', 'pem'>, callback: (err: Error | null, publicKey: string, privateKey: string) => void): void;
+    function generateKeyPair(type: 'rsa-pss', options: RSAPSSKeyPairOptions<'pem', 'der'>, callback: (err: Error | null, publicKey: string, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'rsa-pss', options: RSAPSSKeyPairOptions<'der', 'pem'>, callback: (err: Error | null, publicKey: Buffer, privateKey: string) => void): void;
+    function generateKeyPair(type: 'rsa-pss', options: RSAPSSKeyPairOptions<'der', 'der'>, callback: (err: Error | null, publicKey: Buffer, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'rsa-pss', options: RSAPSSKeyPairKeyObjectOptions, callback: (err: Error | null, publicKey: KeyObject, privateKey: KeyObject) => void): void;
+    function generateKeyPair(type: 'dsa', options: DSAKeyPairOptions<'pem', 'pem'>, callback: (err: Error | null, publicKey: string, privateKey: string) => void): void;
+    function generateKeyPair(type: 'dsa', options: DSAKeyPairOptions<'pem', 'der'>, callback: (err: Error | null, publicKey: string, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'dsa', options: DSAKeyPairOptions<'der', 'pem'>, callback: (err: Error | null, publicKey: Buffer, privateKey: string) => void): void;
+    function generateKeyPair(type: 'dsa', options: DSAKeyPairOptions<'der', 'der'>, callback: (err: Error | null, publicKey: Buffer, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'dsa', options: DSAKeyPairKeyObjectOptions, callback: (err: Error | null, publicKey: KeyObject, privateKey: KeyObject) => void): void;
+    function generateKeyPair(type: 'ec', options: ECKeyPairOptions<'pem', 'pem'>, callback: (err: Error | null, publicKey: string, privateKey: string) => void): void;
+    function generateKeyPair(type: 'ec', options: ECKeyPairOptions<'pem', 'der'>, callback: (err: Error | null, publicKey: string, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'ec', options: ECKeyPairOptions<'der', 'pem'>, callback: (err: Error | null, publicKey: Buffer, privateKey: string) => void): void;
+    function generateKeyPair(type: 'ec', options: ECKeyPairOptions<'der', 'der'>, callback: (err: Error | null, publicKey: Buffer, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'ec', options: ECKeyPairKeyObjectOptions, callback: (err: Error | null, publicKey: KeyObject, privateKey: KeyObject) => void): void;
+    function generateKeyPair(type: 'ed25519', options: ED25519KeyPairOptions<'pem', 'pem'>, callback: (err: Error | null, publicKey: string, privateKey: string) => void): void;
+    function generateKeyPair(type: 'ed25519', options: ED25519KeyPairOptions<'pem', 'der'>, callback: (err: Error | null, publicKey: string, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'ed25519', options: ED25519KeyPairOptions<'der', 'pem'>, callback: (err: Error | null, publicKey: Buffer, privateKey: string) => void): void;
+    function generateKeyPair(type: 'ed25519', options: ED25519KeyPairOptions<'der', 'der'>, callback: (err: Error | null, publicKey: Buffer, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'ed25519', options: ED25519KeyPairKeyObjectOptions | undefined, callback: (err: Error | null, publicKey: KeyObject, privateKey: KeyObject) => void): void;
+    function generateKeyPair(type: 'ed448', options: ED448KeyPairOptions<'pem', 'pem'>, callback: (err: Error | null, publicKey: string, privateKey: string) => void): void;
+    function generateKeyPair(type: 'ed448', options: ED448KeyPairOptions<'pem', 'der'>, callback: (err: Error | null, publicKey: string, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'ed448', options: ED448KeyPairOptions<'der', 'pem'>, callback: (err: Error | null, publicKey: Buffer, privateKey: string) => void): void;
+    function generateKeyPair(type: 'ed448', options: ED448KeyPairOptions<'der', 'der'>, callback: (err: Error | null, publicKey: Buffer, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'ed448', options: ED448KeyPairKeyObjectOptions | undefined, callback: (err: Error | null, publicKey: KeyObject, privateKey: KeyObject) => void): void;
+    function generateKeyPair(type: 'x25519', options: X25519KeyPairOptions<'pem', 'pem'>, callback: (err: Error | null, publicKey: string, privateKey: string) => void): void;
+    function generateKeyPair(type: 'x25519', options: X25519KeyPairOptions<'pem', 'der'>, callback: (err: Error | null, publicKey: string, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'x25519', options: X25519KeyPairOptions<'der', 'pem'>, callback: (err: Error | null, publicKey: Buffer, privateKey: string) => void): void;
+    function generateKeyPair(type: 'x25519', options: X25519KeyPairOptions<'der', 'der'>, callback: (err: Error | null, publicKey: Buffer, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'x25519', options: X25519KeyPairKeyObjectOptions | undefined, callback: (err: Error | null, publicKey: KeyObject, privateKey: KeyObject) => void): void;
+    function generateKeyPair(type: 'x448', options: X448KeyPairOptions<'pem', 'pem'>, callback: (err: Error | null, publicKey: string, privateKey: string) => void): void;
+    function generateKeyPair(type: 'x448', options: X448KeyPairOptions<'pem', 'der'>, callback: (err: Error | null, publicKey: string, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'x448', options: X448KeyPairOptions<'der', 'pem'>, callback: (err: Error | null, publicKey: Buffer, privateKey: string) => void): void;
+    function generateKeyPair(type: 'x448', options: X448KeyPairOptions<'der', 'der'>, callback: (err: Error | null, publicKey: Buffer, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'x448', options: X448KeyPairKeyObjectOptions | undefined, callback: (err: Error | null, publicKey: KeyObject, privateKey: KeyObject) => void): void;
+    namespace generateKeyPair {
+        function __promisify__(
+            type: 'rsa',
+            options: RSAKeyPairOptions<'pem', 'pem'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'rsa',
+            options: RSAKeyPairOptions<'pem', 'der'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(
+            type: 'rsa',
+            options: RSAKeyPairOptions<'der', 'pem'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'rsa',
+            options: RSAKeyPairOptions<'der', 'der'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(type: 'rsa', options: RSAKeyPairKeyObjectOptions): Promise<KeyPairKeyObjectResult>;
+        function __promisify__(
+            type: 'rsa-pss',
+            options: RSAPSSKeyPairOptions<'pem', 'pem'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'rsa-pss',
+            options: RSAPSSKeyPairOptions<'pem', 'der'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(
+            type: 'rsa-pss',
+            options: RSAPSSKeyPairOptions<'der', 'pem'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'rsa-pss',
+            options: RSAPSSKeyPairOptions<'der', 'der'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(type: 'rsa-pss', options: RSAPSSKeyPairKeyObjectOptions): Promise<KeyPairKeyObjectResult>;
+        function __promisify__(
+            type: 'dsa',
+            options: DSAKeyPairOptions<'pem', 'pem'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'dsa',
+            options: DSAKeyPairOptions<'pem', 'der'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(
+            type: 'dsa',
+            options: DSAKeyPairOptions<'der', 'pem'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'dsa',
+            options: DSAKeyPairOptions<'der', 'der'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(type: 'dsa', options: DSAKeyPairKeyObjectOptions): Promise<KeyPairKeyObjectResult>;
+        function __promisify__(
+            type: 'ec',
+            options: ECKeyPairOptions<'pem', 'pem'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'ec',
+            options: ECKeyPairOptions<'pem', 'der'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(
+            type: 'ec',
+            options: ECKeyPairOptions<'der', 'pem'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'ec',
+            options: ECKeyPairOptions<'der', 'der'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(type: 'ec', options: ECKeyPairKeyObjectOptions): Promise<KeyPairKeyObjectResult>;
+        function __promisify__(
+            type: 'ed25519',
+            options: ED25519KeyPairOptions<'pem', 'pem'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'ed25519',
+            options: ED25519KeyPairOptions<'pem', 'der'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(
+            type: 'ed25519',
+            options: ED25519KeyPairOptions<'der', 'pem'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'ed25519',
+            options: ED25519KeyPairOptions<'der', 'der'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(type: 'ed25519', options?: ED25519KeyPairKeyObjectOptions): Promise<KeyPairKeyObjectResult>;
+        function __promisify__(
+            type: 'ed448',
+            options: ED448KeyPairOptions<'pem', 'pem'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'ed448',
+            options: ED448KeyPairOptions<'pem', 'der'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(
+            type: 'ed448',
+            options: ED448KeyPairOptions<'der', 'pem'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'ed448',
+            options: ED448KeyPairOptions<'der', 'der'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(type: 'ed448', options?: ED448KeyPairKeyObjectOptions): Promise<KeyPairKeyObjectResult>;
+        function __promisify__(
+            type: 'x25519',
+            options: X25519KeyPairOptions<'pem', 'pem'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'x25519',
+            options: X25519KeyPairOptions<'pem', 'der'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(
+            type: 'x25519',
+            options: X25519KeyPairOptions<'der', 'pem'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'x25519',
+            options: X25519KeyPairOptions<'der', 'der'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(type: 'x25519', options?: X25519KeyPairKeyObjectOptions): Promise<KeyPairKeyObjectResult>;
+        function __promisify__(
+            type: 'x448',
+            options: X448KeyPairOptions<'pem', 'pem'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'x448',
+            options: X448KeyPairOptions<'pem', 'der'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(
+            type: 'x448',
+            options: X448KeyPairOptions<'der', 'pem'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'x448',
+            options: X448KeyPairOptions<'der', 'der'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(type: 'x448', options?: X448KeyPairKeyObjectOptions): Promise<KeyPairKeyObjectResult>;
+    }
+    /**
+     * Calculates and returns the signature for `data` using the given private key and
+     * algorithm. If `algorithm` is `null` or `undefined`, then the algorithm is
+     * dependent upon the key type (especially Ed25519 and Ed448).
+     *
+     * If `key` is not a `KeyObject`, this function behaves as if `key` had been
+     * passed to {@link createPrivateKey}. If it is an object, the following
+     * additional properties can be passed:
+     *
+     * If the `callback` function is provided this function uses libuv's threadpool.
+     * @since v12.0.0
+     */
+    function sign(algorithm: string | null | undefined, data: NodeJS.ArrayBufferView, key: KeyLike | SignKeyObjectInput | SignPrivateKeyInput): Buffer;
+    function sign(
+        algorithm: string | null | undefined,
+        data: NodeJS.ArrayBufferView,
+        key: KeyLike | SignKeyObjectInput | SignPrivateKeyInput,
+        callback: (error: Error | null, data: Buffer) => void
+    ): void;
+    /**
+     * Verifies the given signature for `data` using the given key and algorithm. If`algorithm` is `null` or `undefined`, then the algorithm is dependent upon the
+     * key type (especially Ed25519 and Ed448).
+     *
+     * If `key` is not a `KeyObject`, this function behaves as if `key` had been
+     * passed to {@link createPublicKey}. If it is an object, the following
+     * additional properties can be passed:
+     *
+     * The `signature` argument is the previously calculated signature for the `data`.
+     *
+     * Because public keys can be derived from private keys, a private key or a public
+     * key may be passed for `key`.
+     *
+     * If the `callback` function is provided this function uses libuv's threadpool.
+     * @since v12.0.0
+     */
+    function verify(algorithm: string | null | undefined, data: NodeJS.ArrayBufferView, key: KeyLike | VerifyKeyObjectInput | VerifyPublicKeyInput, signature: NodeJS.ArrayBufferView): boolean;
+    function verify(
+        algorithm: string | null | undefined,
+        data: NodeJS.ArrayBufferView,
+        key: KeyLike | VerifyKeyObjectInput | VerifyPublicKeyInput,
+        signature: NodeJS.ArrayBufferView,
+        callback: (error: Error | null, result: boolean) => void
+    ): void;
+    /**
+     * Computes the Diffie-Hellman secret based on a `privateKey` and a `publicKey`.
+     * Both keys must have the same `asymmetricKeyType`, which must be one of `'dh'`(for Diffie-Hellman), `'ec'` (for ECDH), `'x448'`, or `'x25519'` (for ECDH-ES).
+     * @since v13.9.0, v12.17.0
+     */
+    function diffieHellman(options: { privateKey: KeyObject; publicKey: KeyObject }): Buffer;
+    type CipherMode = 'cbc' | 'ccm' | 'cfb' | 'ctr' | 'ecb' | 'gcm' | 'ocb' | 'ofb' | 'stream' | 'wrap' | 'xts';
+    interface CipherInfoOptions {
+        /**
+         * A test key length.
+         */
+        keyLength?: number | undefined;
+        /**
+         * A test IV length.
+         */
+        ivLength?: number | undefined;
+    }
+    interface CipherInfo {
+        /**
+         * The name of the cipher.
+         */
+        name: string;
+        /**
+         * The nid of the cipher.
+         */
+        nid: number;
+        /**
+         * The block size of the cipher in bytes.
+         * This property is omitted when mode is 'stream'.
+         */
+        blockSize?: number | undefined;
+        /**
+         * The expected or default initialization vector length in bytes.
+         * This property is omitted if the cipher does not use an initialization vector.
+         */
+        ivLength?: number | undefined;
+        /**
+         * The expected or default key length in bytes.
+         */
+        keyLength: number;
+        /**
+         * The cipher mode.
+         */
+        mode: CipherMode;
+    }
+    /**
+     * Returns information about a given cipher.
+     *
+     * Some ciphers accept variable length keys and initialization vectors. By default,
+     * the `crypto.getCipherInfo()` method will return the default values for these
+     * ciphers. To test if a given key length or iv length is acceptable for given
+     * cipher, use the `keyLength` and `ivLength` options. If the given values are
+     * unacceptable, `undefined` will be returned.
+     * @since v15.0.0
+     * @param nameOrNid The name or nid of the cipher to query.
+     */
+    function getCipherInfo(nameOrNid: string | number, options?: CipherInfoOptions): CipherInfo | undefined;
+    /**
+     * HKDF is a simple key derivation function defined in RFC 5869\. The given `ikm`,`salt` and `info` are used with the `digest` to derive a key of `keylen` bytes.
+     *
+     * The supplied `callback` function is called with two arguments: `err` and`derivedKey`. If an errors occurs while deriving the key, `err` will be set;
+     * otherwise `err` will be `null`. The successfully generated `derivedKey` will
+     * be passed to the callback as an [ArrayBuffer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer). An error will be thrown if any
+     * of the input arguments specify invalid values or types.
+     *
+     * ```js
+     * import { Buffer } from 'buffer';
+     * const {
+     *   hkdf
+     * } = await import('crypto');
+     *
+     * hkdf('sha512', 'key', 'salt', 'info', 64, (err, derivedKey) => {
+     *   if (err) throw err;
+     *   console.log(Buffer.from(derivedKey).toString('hex'));  // '24156e2...5391653'
+     * });
+     * ```
+     * @since v15.0.0
+     * @param digest The digest algorithm to use.
+     * @param ikm The input keying material. It must be at least one byte in length.
+     * @param salt The salt value. Must be provided but can be zero-length.
+     * @param info Additional info value. Must be provided but can be zero-length, and cannot be more than 1024 bytes.
+     * @param keylen The length of the key to generate. Must be greater than 0. The maximum allowable value is `255` times the number of bytes produced by the selected digest function (e.g. `sha512`
+     * generates 64-byte hashes, making the maximum HKDF output 16320 bytes).
+     */
+    function hkdf(digest: string, irm: BinaryLike | KeyObject, salt: BinaryLike, info: BinaryLike, keylen: number, callback: (err: Error | null, derivedKey: ArrayBuffer) => void): void;
+    /**
+     * Provides a synchronous HKDF key derivation function as defined in RFC 5869\. The
+     * given `ikm`, `salt` and `info` are used with the `digest` to derive a key of`keylen` bytes.
+     *
+     * The successfully generated `derivedKey` will be returned as an [ArrayBuffer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer).
+     *
+     * An error will be thrown if any of the input arguments specify invalid values or
+     * types, or if the derived key cannot be generated.
+     *
+     * ```js
+     * import { Buffer } from 'buffer';
+     * const {
+     *   hkdfSync
+     * } = await import('crypto');
+     *
+     * const derivedKey = hkdfSync('sha512', 'key', 'salt', 'info', 64);
+     * console.log(Buffer.from(derivedKey).toString('hex'));  // '24156e2...5391653'
+     * ```
+     * @since v15.0.0
+     * @param digest The digest algorithm to use.
+     * @param ikm The input keying material. It must be at least one byte in length.
+     * @param salt The salt value. Must be provided but can be zero-length.
+     * @param info Additional info value. Must be provided but can be zero-length, and cannot be more than 1024 bytes.
+     * @param keylen The length of the key to generate. Must be greater than 0. The maximum allowable value is `255` times the number of bytes produced by the selected digest function (e.g. `sha512`
+     * generates 64-byte hashes, making the maximum HKDF output 16320 bytes).
+     */
+    function hkdfSync(digest: string, ikm: BinaryLike | KeyObject, salt: BinaryLike, info: BinaryLike, keylen: number): ArrayBuffer;
+    interface SecureHeapUsage {
+        /**
+         * The total allocated secure heap size as specified using the `--secure-heap=n` command-line flag.
+         */
+        total: number;
+        /**
+         * The minimum allocation from the secure heap as specified using the `--secure-heap-min` command-line flag.
+         */
+        min: number;
+        /**
+         * The total number of bytes currently allocated from the secure heap.
+         */
+        used: number;
+        /**
+         * The calculated ratio of `used` to `total` allocated bytes.
+         */
+        utilization: number;
+    }
+    /**
+     * @since v15.6.0
+     */
+    function secureHeapUsed(): SecureHeapUsage;
+    interface RandomUUIDOptions {
+        /**
+         * By default, to improve performance,
+         * Node.js will pre-emptively generate and persistently cache enough
+         * random data to generate up to 128 random UUIDs. To generate a UUID
+         * without using the cache, set `disableEntropyCache` to `true`.
+         *
+         * @default `false`
+         */
+        disableEntropyCache?: boolean | undefined;
+    }
+    /**
+     * Generates a random [RFC 4122](https://www.rfc-editor.org/rfc/rfc4122.txt) version 4 UUID. The UUID is generated using a
+     * cryptographic pseudorandom number generator.
+     * @since v15.6.0, v14.17.0
+     */
+    function randomUUID(options?: RandomUUIDOptions): string;
+    interface X509CheckOptions {
+        /**
+         * @default 'always'
+         */
+        subject: 'always' | 'never';
+        /**
+         * @default true
+         */
+        wildcards: boolean;
+        /**
+         * @default true
+         */
+        partialWildcards: boolean;
+        /**
+         * @default false
+         */
+        multiLabelWildcards: boolean;
+        /**
+         * @default false
+         */
+        singleLabelSubdomains: boolean;
+    }
+    /**
+     * Encapsulates an X509 certificate and provides read-only access to
+     * its information.
+     *
+     * ```js
+     * const { X509Certificate } = await import('crypto');
+     *
+     * const x509 = new X509Certificate('{... pem encoded cert ...}');
+     *
+     * console.log(x509.subject);
+     * ```
+     * @since v15.6.0
+     */
+    class X509Certificate {
+        /**
+         * Will be \`true\` if this is a Certificate Authority (CA) certificate.
+         * @since v15.6.0
+         */
+        readonly ca: boolean;
+        /**
+         * The SHA-1 fingerprint of this certificate.
+         *
+         * Because SHA-1 is cryptographically broken and because the security of SHA-1 is
+         * significantly worse than that of algorithms that are commonly used to sign
+         * certificates, consider using `x509.fingerprint256` instead.
+         * @since v15.6.0
+         */
+        readonly fingerprint: string;
+        /**
+         * The SHA-256 fingerprint of this certificate.
+         * @since v15.6.0
+         */
+        readonly fingerprint256: string;
+        /**
+         * The SHA-512 fingerprint of this certificate.
+         * @since v16.14.0
+         */
+         readonly fingerprint512: string;
+        /**
+         * The complete subject of this certificate.
+         * @since v15.6.0
+         */
+        readonly subject: string;
+        /**
+         * The subject alternative name specified for this certificate or `undefined`
+         * if not available.
+         * @since v15.6.0
+         */
+        readonly subjectAltName: string | undefined;
+        /**
+         * The information access content of this certificate or `undefined` if not
+         * available.
+         * @since v15.6.0
+         */
+        readonly infoAccess: string | undefined;
+        /**
+         * An array detailing the key usages for this certificate.
+         * @since v15.6.0
+         */
+        readonly keyUsage: string[];
+        /**
+         * The issuer identification included in this certificate.
+         * @since v15.6.0
+         */
+        readonly issuer: string;
+        /**
+         * The issuer certificate or `undefined` if the issuer certificate is not
+         * available.
+         * @since v15.9.0
+         */
+        readonly issuerCertificate?: X509Certificate | undefined;
+        /**
+         * The public key `KeyObject` for this certificate.
+         * @since v15.6.0
+         */
+        readonly publicKey: KeyObject;
+        /**
+         * A `Buffer` containing the DER encoding of this certificate.
+         * @since v15.6.0
+         */
+        readonly raw: Buffer;
+        /**
+         * The serial number of this certificate.
+         *
+         * Serial numbers are assigned by certificate authorities and do not uniquely
+         * identify certificates. Consider using `x509.fingerprint256` as a unique
+         * identifier instead.
+         * @since v15.6.0
+         */
+        readonly serialNumber: string;
+        /**
+         * The date/time from which this certificate is considered valid.
+         * @since v15.6.0
+         */
+        readonly validFrom: string;
+        /**
+         * The date/time until which this certificate is considered valid.
+         * @since v15.6.0
+         */
+        readonly validTo: string;
+        constructor(buffer: BinaryLike);
+        /**
+         * Checks whether the certificate matches the given email address.
+         *
+         * If the `'subject'` option is undefined or set to `'default'`, the certificate
+         * subject is only considered if the subject alternative name extension either does
+         * not exist or does not contain any email addresses.
+         *
+         * If the `'subject'` option is set to `'always'` and if the subject alternative
+         * name extension either does not exist or does not contain a matching email
+         * address, the certificate subject is considered.
+         *
+         * If the `'subject'` option is set to `'never'`, the certificate subject is never
+         * considered, even if the certificate contains no subject alternative names.
+         * @since v15.6.0
+         * @return Returns `email` if the certificate matches, `undefined` if it does not.
+         */
+        checkEmail(email: string, options?: Pick<X509CheckOptions, 'subject'>): string | undefined;
+        /**
+         * Checks whether the certificate matches the given host name.
+         *
+         * If the certificate matches the given host name, the matching subject name is
+         * returned. The returned name might be an exact match (e.g., `foo.example.com`)
+         * or it might contain wildcards (e.g., `*.example.com`). Because host name
+         * comparisons are case-insensitive, the returned subject name might also differ
+         * from the given `name` in capitalization.
+         *
+         * If the `'subject'` option is undefined or set to `'default'`, the certificate
+         * subject is only considered if the subject alternative name extension either does
+         * not exist or does not contain any DNS names. This behavior is consistent with [RFC 2818](https://www.rfc-editor.org/rfc/rfc2818.txt) ("HTTP Over TLS").
+         *
+         * If the `'subject'` option is set to `'always'` and if the subject alternative
+         * name extension either does not exist or does not contain a matching DNS name,
+         * the certificate subject is considered.
+         *
+         * If the `'subject'` option is set to `'never'`, the certificate subject is never
+         * considered, even if the certificate contains no subject alternative names.
+         * @since v15.6.0
+         * @return Returns a subject name that matches `name`, or `undefined` if no subject name matches `name`.
+         */
+        checkHost(name: string, options?: X509CheckOptions): string | undefined;
+        /**
+         * Checks whether the certificate matches the given IP address (IPv4 or IPv6).
+         *
+         * Only [RFC 5280](https://www.rfc-editor.org/rfc/rfc5280.txt) `iPAddress` subject alternative names are considered, and they
+         * must match the given `ip` address exactly. Other subject alternative names as
+         * well as the subject field of the certificate are ignored.
+         * @since v15.6.0
+         * @return Returns `ip` if the certificate matches, `undefined` if it does not.
+         */
+        checkIP(ip: string): string | undefined;
+        /**
+         * Checks whether this certificate was issued by the given `otherCert`.
+         * @since v15.6.0
+         */
+        checkIssued(otherCert: X509Certificate): boolean;
+        /**
+         * Checks whether the public key for this certificate is consistent with
+         * the given private key.
+         * @since v15.6.0
+         * @param privateKey A private key.
+         */
+        checkPrivateKey(privateKey: KeyObject): boolean;
+        /**
+         * There is no standard JSON encoding for X509 certificates. The`toJSON()` method returns a string containing the PEM encoded
+         * certificate.
+         * @since v15.6.0
+         */
+        toJSON(): string;
+        /**
+         * Returns information about this certificate using the legacy `certificate object` encoding.
+         * @since v15.6.0
+         */
+        toLegacyObject(): PeerCertificate;
+        /**
+         * Returns the PEM-encoded certificate.
+         * @since v15.6.0
+         */
+        toString(): string;
+        /**
+         * Verifies that this certificate was signed by the given public key.
+         * Does not perform any other validation checks on the certificate.
+         * @since v15.6.0
+         * @param publicKey A public key.
+         */
+        verify(publicKey: KeyObject): boolean;
+    }
+    type LargeNumberLike = NodeJS.ArrayBufferView | SharedArrayBuffer | ArrayBuffer | bigint;
+    interface GeneratePrimeOptions {
+        add?: LargeNumberLike | undefined;
+        rem?: LargeNumberLike | undefined;
+        /**
+         * @default false
+         */
+        safe?: boolean | undefined;
+        bigint?: boolean | undefined;
+    }
+    interface GeneratePrimeOptionsBigInt extends GeneratePrimeOptions {
+        bigint: true;
+    }
+    interface GeneratePrimeOptionsArrayBuffer extends GeneratePrimeOptions {
+        bigint?: false | undefined;
+    }
+    /**
+     * Generates a pseudorandom prime of `size` bits.
+     *
+     * If `options.safe` is `true`, the prime will be a safe prime -- that is,`(prime - 1) / 2` will also be a prime.
+     *
+     * The `options.add` and `options.rem` parameters can be used to enforce additional
+     * requirements, e.g., for Diffie-Hellman:
+     *
+     * * If `options.add` and `options.rem` are both set, the prime will satisfy the
+     * condition that `prime % add = rem`.
+     * * If only `options.add` is set and `options.safe` is not `true`, the prime will
+     * satisfy the condition that `prime % add = 1`.
+     * * If only `options.add` is set and `options.safe` is set to `true`, the prime
+     * will instead satisfy the condition that `prime % add = 3`. This is necessary
+     * because `prime % add = 1` for `options.add > 2` would contradict the condition
+     * enforced by `options.safe`.
+     * * `options.rem` is ignored if `options.add` is not given.
+     *
+     * Both `options.add` and `options.rem` must be encoded as big-endian sequences
+     * if given as an `ArrayBuffer`, `SharedArrayBuffer`, `TypedArray`, `Buffer`, or`DataView`.
+     *
+     * By default, the prime is encoded as a big-endian sequence of octets
+     * in an [ArrayBuffer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer). If the `bigint` option is `true`, then a
+     * [bigint](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt) is provided.
+     * @since v15.8.0
+     * @param size The size (in bits) of the prime to generate.
+     */
+    function generatePrime(size: number, callback: (err: Error | null, prime: ArrayBuffer) => void): void;
+    function generatePrime(size: number, options: GeneratePrimeOptionsBigInt, callback: (err: Error | null, prime: bigint) => void): void;
+    function generatePrime(size: number, options: GeneratePrimeOptionsArrayBuffer, callback: (err: Error | null, prime: ArrayBuffer) => void): void;
+    function generatePrime(size: number, options: GeneratePrimeOptions, callback: (err: Error | null, prime: ArrayBuffer | bigint) => void): void;
+    /**
+     * Generates a pseudorandom prime of `size` bits.
+     *
+     * If `options.safe` is `true`, the prime will be a safe prime -- that is,`(prime - 1) / 2` will also be a prime.
+     *
+     * The `options.add` and `options.rem` parameters can be used to enforce additional
+     * requirements, e.g., for Diffie-Hellman:
+     *
+     * * If `options.add` and `options.rem` are both set, the prime will satisfy the
+     * condition that `prime % add = rem`.
+     * * If only `options.add` is set and `options.safe` is not `true`, the prime will
+     * satisfy the condition that `prime % add = 1`.
+     * * If only `options.add` is set and `options.safe` is set to `true`, the prime
+     * will instead satisfy the condition that `prime % add = 3`. This is necessary
+     * because `prime % add = 1` for `options.add > 2` would contradict the condition
+     * enforced by `options.safe`.
+     * * `options.rem` is ignored if `options.add` is not given.
+     *
+     * Both `options.add` and `options.rem` must be encoded as big-endian sequences
+     * if given as an `ArrayBuffer`, `SharedArrayBuffer`, `TypedArray`, `Buffer`, or`DataView`.
+     *
+     * By default, the prime is encoded as a big-endian sequence of octets
+     * in an [ArrayBuffer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer). If the `bigint` option is `true`, then a
+     * [bigint](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt) is provided.
+     * @since v15.8.0
+     * @param size The size (in bits) of the prime to generate.
+     */
+    function generatePrimeSync(size: number): ArrayBuffer;
+    function generatePrimeSync(size: number, options: GeneratePrimeOptionsBigInt): bigint;
+    function generatePrimeSync(size: number, options: GeneratePrimeOptionsArrayBuffer): ArrayBuffer;
+    function generatePrimeSync(size: number, options: GeneratePrimeOptions): ArrayBuffer | bigint;
+    interface CheckPrimeOptions {
+        /**
+         * The number of Miller-Rabin probabilistic primality iterations to perform.
+         * When the value is 0 (zero), a number of checks is used that yields a false positive rate of at most 2-64 for random input.
+         * Care must be used when selecting a number of checks.
+         * Refer to the OpenSSL documentation for the BN_is_prime_ex function nchecks options for more details.
+         *
+         * @default 0
+         */
+        checks?: number | undefined;
+    }
+    /**
+     * Checks the primality of the `candidate`.
+     * @since v15.8.0
+     * @param candidate A possible prime encoded as a sequence of big endian octets of arbitrary length.
+     */
+    function checkPrime(value: LargeNumberLike, callback: (err: Error | null, result: boolean) => void): void;
+    function checkPrime(value: LargeNumberLike, options: CheckPrimeOptions, callback: (err: Error | null, result: boolean) => void): void;
+    /**
+     * Checks the primality of the `candidate`.
+     * @since v15.8.0
+     * @param candidate A possible prime encoded as a sequence of big endian octets of arbitrary length.
+     * @return `true` if the candidate is a prime with an error probability less than `0.25 ** options.checks`.
+     */
+    function checkPrimeSync(candidate: LargeNumberLike, options?: CheckPrimeOptions): boolean;
+    /**
+     * Load and set the `engine` for some or all OpenSSL functions (selected by flags).
+     *
+     * `engine` could be either an id or a path to the engine's shared library.
+     *
+     * The optional `flags` argument uses `ENGINE_METHOD_ALL` by default.
+     * The `flags` is a bit field taking one of or a mix of the following flags (defined in `crypto.constants`):
+     *
+     * - `crypto.constants.ENGINE_METHOD_RSA`
+     * - `crypto.constants.ENGINE_METHOD_DSA`
+     * - `crypto.constants.ENGINE_METHOD_DH`
+     * - `crypto.constants.ENGINE_METHOD_RAND`
+     * - `crypto.constants.ENGINE_METHOD_EC`
+     * - `crypto.constants.ENGINE_METHOD_CIPHERS`
+     * - `crypto.constants.ENGINE_METHOD_DIGESTS`
+     * - `crypto.constants.ENGINE_METHOD_PKEY_METHS`
+     * - `crypto.constants.ENGINE_METHOD_PKEY_ASN1_METHS`
+     * - `crypto.constants.ENGINE_METHOD_ALL`
+     * - `crypto.constants.ENGINE_METHOD_NONE`
+     *
+     * The flags below are deprecated in OpenSSL-1.1.0.
+     *
+     * - `crypto.constants.ENGINE_METHOD_ECDH`
+     * - `crypto.constants.ENGINE_METHOD_ECDSA`
+     * - `crypto.constants.ENGINE_METHOD_STORE`
+     * @since v0.11.11
+     * @param [flags=crypto.constants.ENGINE_METHOD_ALL]
+     */
+    function setEngine(engine: string, flags?: number): void;
+    /**
+     * A convenient alias for `crypto.webcrypto.getRandomValues()`.
+     * This implementation is not compliant with the Web Crypto spec,
+     * to write web-compatible code use `crypto.webcrypto.getRandomValues()` instead.
+     * @since v17.4.0
+     * @returns Returns `typedArray`.
+     */
+    function getRandomValues<T extends webcrypto.BufferSource>(typedArray: T): T;
+    /**
+     * A convenient alias for `crypto.webcrypto.subtle`.
+     * @since v17.4.0
+     */
+    const subtle: webcrypto.SubtleCrypto;
+    /**
+     * An implementation of the Web Crypto API standard.
+     *
+     * See the {@link https://nodejs.org/docs/latest/api/webcrypto.html Web Crypto API documentation} for details.
+     * @since v15.0.0
+     */
+    const webcrypto: webcrypto.Crypto;
+    namespace webcrypto {
+        type BufferSource = ArrayBufferView | ArrayBuffer;
+        type KeyFormat = 'jwk' | 'pkcs8' | 'raw' | 'spki';
+        type KeyType = 'private' | 'public' | 'secret';
+        type KeyUsage = 'decrypt' | 'deriveBits' | 'deriveKey' | 'encrypt' | 'sign' | 'unwrapKey' | 'verify' | 'wrapKey';
+        type AlgorithmIdentifier = Algorithm | string;
+        type HashAlgorithmIdentifier = AlgorithmIdentifier;
+        type NamedCurve = string;
+        type BigInteger = Uint8Array;
+        interface AesCbcParams extends Algorithm {
+            iv: BufferSource;
+        }
+        interface AesCtrParams extends Algorithm {
+            counter: BufferSource;
+            length: number;
+        }
+        interface AesDerivedKeyParams extends Algorithm {
+            length: number;
+        }
+        interface AesGcmParams extends Algorithm {
+            additionalData?: BufferSource;
+            iv: BufferSource;
+            tagLength?: number;
+        }
+        interface AesKeyAlgorithm extends KeyAlgorithm {
+            length: number;
+        }
+        interface AesKeyGenParams extends Algorithm {
+            length: number;
+        }
+        interface Algorithm {
+            name: string;
+        }
+        interface EcKeyAlgorithm extends KeyAlgorithm {
+            namedCurve: NamedCurve;
+        }
+        interface EcKeyGenParams extends Algorithm {
+            namedCurve: NamedCurve;
+        }
+        interface EcKeyImportParams extends Algorithm {
+            namedCurve: NamedCurve;
+        }
+        interface EcdhKeyDeriveParams extends Algorithm {
+            public: CryptoKey;
+        }
+        interface EcdsaParams extends Algorithm {
+            hash: HashAlgorithmIdentifier;
+        }
+        interface Ed448Params extends Algorithm {
+            context?: BufferSource;
+        }
+        interface HkdfParams extends Algorithm {
+            hash: HashAlgorithmIdentifier;
+            info: BufferSource;
+            salt: BufferSource;
+        }
+        interface HmacImportParams extends Algorithm {
+            hash: HashAlgorithmIdentifier;
+            length?: number;
+        }
+        interface HmacKeyAlgorithm extends KeyAlgorithm {
+            hash: KeyAlgorithm;
+            length: number;
+        }
+        interface HmacKeyGenParams extends Algorithm {
+            hash: HashAlgorithmIdentifier;
+            length?: number;
+        }
+        interface JsonWebKey {
+            alg?: string;
+            crv?: string;
+            d?: string;
+            dp?: string;
+            dq?: string;
+            e?: string;
+            ext?: boolean;
+            k?: string;
+            key_ops?: string[];
+            kty?: string;
+            n?: string;
+            oth?: RsaOtherPrimesInfo[];
+            p?: string;
+            q?: string;
+            qi?: string;
+            use?: string;
+            x?: string;
+            y?: string;
+        }
+        interface KeyAlgorithm {
+            name: string;
+        }
+        interface Pbkdf2Params extends Algorithm {
+            hash: HashAlgorithmIdentifier;
+            iterations: number;
+            salt: BufferSource;
+        }
+        interface RsaHashedImportParams extends Algorithm {
+            hash: HashAlgorithmIdentifier;
+        }
+        interface RsaHashedKeyAlgorithm extends RsaKeyAlgorithm {
+            hash: KeyAlgorithm;
+        }
+        interface RsaHashedKeyGenParams extends RsaKeyGenParams {
+            hash: HashAlgorithmIdentifier;
+        }
+        interface RsaKeyAlgorithm extends KeyAlgorithm {
+            modulusLength: number;
+            publicExponent: BigInteger;
+        }
+        interface RsaKeyGenParams extends Algorithm {
+            modulusLength: number;
+            publicExponent: BigInteger;
+        }
+        interface RsaOaepParams extends Algorithm {
+            label?: BufferSource;
+        }
+        interface RsaOtherPrimesInfo {
+            d?: string;
+            r?: string;
+            t?: string;
+        }
+        interface RsaPssParams extends Algorithm {
+            saltLength: number;
+        }
+        /**
+         * Calling `require('node:crypto').webcrypto` returns an instance of the `Crypto` class.
+         * `Crypto` is a singleton that provides access to the remainder of the crypto API.
+         * @since v15.0.0
+         */
+        interface Crypto {
+            /**
+             * Provides access to the `SubtleCrypto` API.
+             * @since v15.0.0
+             */
+            readonly subtle: SubtleCrypto;
+            /**
+             * Generates cryptographically strong random values.
+             * The given `typedArray` is filled with random values, and a reference to `typedArray` is returned.
+             *
+             * The given `typedArray` must be an integer-based instance of {@link NodeJS.TypedArray}, i.e. `Float32Array` and `Float64Array` are not accepted.
+             *
+             * An error will be thrown if the given `typedArray` is larger than 65,536 bytes.
+             * @since v15.0.0
+             */
+            getRandomValues<T extends Exclude<NodeJS.TypedArray, Float32Array | Float64Array>>(typedArray: T): T;
+            /**
+             * Generates a random {@link https://www.rfc-editor.org/rfc/rfc4122.txt RFC 4122} version 4 UUID.
+             * The UUID is generated using a cryptographic pseudorandom number generator.
+             * @since v16.7.0
+             */
+            randomUUID(): string;
+            CryptoKey: CryptoKeyConstructor;
+        }
+        // This constructor throws ILLEGAL_CONSTRUCTOR so it should not be newable.
+        interface CryptoKeyConstructor {
+            /** Illegal constructor */
+            (_: { readonly _: unique symbol }): never; // Allows instanceof to work but not be callable by the user.
+            readonly length: 0;
+            readonly name: 'CryptoKey';
+            readonly prototype: CryptoKey;
+        }
+        /**
+         * @since v15.0.0
+         */
+        interface CryptoKey {
+            /**
+             * An object detailing the algorithm for which the key can be used along with additional algorithm-specific parameters.
+             * @since v15.0.0
+             */
+            readonly algorithm: KeyAlgorithm;
+            /**
+             * When `true`, the {@link CryptoKey} can be extracted using either `subtleCrypto.exportKey()` or `subtleCrypto.wrapKey()`.
+             * @since v15.0.0
+             */
+            readonly extractable: boolean;
+            /**
+             * A string identifying whether the key is a symmetric (`'secret'`) or asymmetric (`'private'` or `'public'`) key.
+             * @since v15.0.0
+             */
+            readonly type: KeyType;
+            /**
+             * An array of strings identifying the operations for which the key may be used.
+             *
+             * The possible usages are:
+             * - `'encrypt'` - The key may be used to encrypt data.
+             * - `'decrypt'` - The key may be used to decrypt data.
+             * - `'sign'` - The key may be used to generate digital signatures.
+             * - `'verify'` - The key may be used to verify digital signatures.
+             * - `'deriveKey'` - The key may be used to derive a new key.
+             * - `'deriveBits'` - The key may be used to derive bits.
+             * - `'wrapKey'` - The key may be used to wrap another key.
+             * - `'unwrapKey'` - The key may be used to unwrap another key.
+             *
+             * Valid key usages depend on the key algorithm (identified by `cryptokey.algorithm.name`).
+             * @since v15.0.0
+             */
+            readonly usages: KeyUsage[];
+        }
+        /**
+         * The `CryptoKeyPair` is a simple dictionary object with `publicKey` and `privateKey` properties, representing an asymmetric key pair.
+         * @since v15.0.0
+         */
+        interface CryptoKeyPair {
+            /**
+             * A {@link CryptoKey} whose type will be `'private'`.
+             * @since v15.0.0
+             */
+            privateKey: CryptoKey;
+            /**
+             * A {@link CryptoKey} whose type will be `'public'`.
+             * @since v15.0.0
+             */
+            publicKey: CryptoKey;
+        }
+        /**
+         * @since v15.0.0
+         */
+        interface SubtleCrypto {
+            /**
+             * Using the method and parameters specified in `algorithm` and the keying material provided by `key`,
+             * `subtle.decrypt()` attempts to decipher the provided `data`. If successful,
+             * the returned promise will be resolved with an `<ArrayBuffer>` containing the plaintext result.
+             *
+             * The algorithms currently supported include:
+             *
+             * - `'RSA-OAEP'`
+             * - `'AES-CTR'`
+             * - `'AES-CBC'`
+             * - `'AES-GCM'`
+             * @since v15.0.0
+             */
+            decrypt(algorithm: AlgorithmIdentifier | RsaOaepParams | AesCtrParams | AesCbcParams | AesGcmParams, key: CryptoKey, data: BufferSource): Promise<ArrayBuffer>;
+            /**
+             * Using the method and parameters specified in `algorithm` and the keying material provided by `baseKey`,
+             * `subtle.deriveBits()` attempts to generate `length` bits.
+             * The Node.js implementation requires that `length` is a multiple of `8`.
+             * If successful, the returned promise will be resolved with an `<ArrayBuffer>` containing the generated data.
+             *
+             * The algorithms currently supported include:
+             *
+             * - `'ECDH'`
+             * - `'X25519'`
+             * - `'X448'`
+             * - `'HKDF'`
+             * - `'PBKDF2'`
+             * @since v15.0.0
+             */
+            deriveBits(algorithm: AlgorithmIdentifier | EcdhKeyDeriveParams | HkdfParams | Pbkdf2Params, baseKey: CryptoKey, length: number): Promise<ArrayBuffer>;
+            /**
+             * Using the method and parameters specified in `algorithm`, and the keying material provided by `baseKey`,
+             * `subtle.deriveKey()` attempts to generate a new <CryptoKey>` based on the method and parameters in `derivedKeyAlgorithm`.
+             *
+             * Calling `subtle.deriveKey()` is equivalent to calling `subtle.deriveBits()` to generate raw keying material,
+             * then passing the result into the `subtle.importKey()` method using the `deriveKeyAlgorithm`, `extractable`, and `keyUsages` parameters as input.
+             *
+             * The algorithms currently supported include:
+             *
+             * - `'ECDH'`
+             * - `'X25519'`
+             * - `'X448'`
+             * - `'HKDF'`
+             * - `'PBKDF2'`
+             * @param keyUsages See {@link https://nodejs.org/docs/latest/api/webcrypto.html#cryptokeyusages Key usages}.
+             * @since v15.0.0
+             */
+            deriveKey(
+                algorithm: AlgorithmIdentifier | EcdhKeyDeriveParams | HkdfParams | Pbkdf2Params,
+                baseKey: CryptoKey,
+                derivedKeyAlgorithm: AlgorithmIdentifier | AesDerivedKeyParams | HmacImportParams | HkdfParams | Pbkdf2Params,
+                extractable: boolean,
+                keyUsages: ReadonlyArray<KeyUsage>
+            ): Promise<CryptoKey>;
+            /**
+             * Using the method identified by `algorithm`, `subtle.digest()` attempts to generate a digest of `data`.
+             * If successful, the returned promise is resolved with an `<ArrayBuffer>` containing the computed digest.
+             *
+             * If `algorithm` is provided as a `<string>`, it must be one of:
+             *
+             * - `'SHA-1'`
+             * - `'SHA-256'`
+             * - `'SHA-384'`
+             * - `'SHA-512'`
+             *
+             * If `algorithm` is provided as an `<Object>`, it must have a `name` property whose value is one of the above.
+             * @since v15.0.0
+             */
+            digest(algorithm: AlgorithmIdentifier, data: BufferSource): Promise<ArrayBuffer>;
+            /**
+             * Using the method and parameters specified by `algorithm` and the keying material provided by `key`,
+             * `subtle.encrypt()` attempts to encipher `data`. If successful,
+             * the returned promise is resolved with an `<ArrayBuffer>` containing the encrypted result.
+             *
+             * The algorithms currently supported include:
+             *
+             * - `'RSA-OAEP'`
+             * - `'AES-CTR'`
+             * - `'AES-CBC'`
+             * - `'AES-GCM'`
+             * @since v15.0.0
+             */
+            encrypt(algorithm: AlgorithmIdentifier | RsaOaepParams | AesCtrParams | AesCbcParams | AesGcmParams, key: CryptoKey, data: BufferSource): Promise<ArrayBuffer>;
+            /**
+             * Exports the given key into the specified format, if supported.
+             *
+             * If the `<CryptoKey>` is not extractable, the returned promise will reject.
+             *
+             * When `format` is either `'pkcs8'` or `'spki'` and the export is successful,
+             * the returned promise will be resolved with an `<ArrayBuffer>` containing the exported key data.
+             *
+             * When `format` is `'jwk'` and the export is successful, the returned promise will be resolved with a
+             * JavaScript object conforming to the {@link https://tools.ietf.org/html/rfc7517 JSON Web Key} specification.
+             * @param format Must be one of `'raw'`, `'pkcs8'`, `'spki'`, or `'jwk'`.
+             * @returns `<Promise>` containing `<ArrayBuffer>`.
+             * @since v15.0.0
+             */
+            exportKey(format: 'jwk', key: CryptoKey): Promise<JsonWebKey>;
+            exportKey(format: Exclude<KeyFormat, 'jwk'>, key: CryptoKey): Promise<ArrayBuffer>;
+            /**
+             * Using the method and parameters provided in `algorithm`,
+             * `subtle.generateKey()` attempts to generate new keying material.
+             * Depending the method used, the method may generate either a single `<CryptoKey>` or a `<CryptoKeyPair>`.
+             *
+             * The `<CryptoKeyPair>` (public and private key) generating algorithms supported include:
+             *
+             * - `'RSASSA-PKCS1-v1_5'`
+             * - `'RSA-PSS'`
+             * - `'RSA-OAEP'`
+             * - `'ECDSA'`
+             * - `'Ed25519'`
+             * - `'Ed448'`
+             * - `'ECDH'`
+             * - `'X25519'`
+             * - `'X448'`
+             * The `<CryptoKey>` (secret key) generating algorithms supported include:
+             *
+             * - `'HMAC'`
+             * - `'AES-CTR'`
+             * - `'AES-CBC'`
+             * - `'AES-GCM'`
+             * - `'AES-KW'`
+             * @param keyUsages See {@link https://nodejs.org/docs/latest/api/webcrypto.html#cryptokeyusages Key usages}.
+             * @since v15.0.0
+             */
+            generateKey(algorithm: RsaHashedKeyGenParams | EcKeyGenParams, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKeyPair>;
+            generateKey(algorithm: AesKeyGenParams | HmacKeyGenParams | Pbkdf2Params, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKey>;
+            generateKey(algorithm: AlgorithmIdentifier, extractable: boolean, keyUsages: KeyUsage[]): Promise<CryptoKeyPair | CryptoKey>;
+            /**
+             * The `subtle.importKey()` method attempts to interpret the provided `keyData` as the given `format`
+             * to create a `<CryptoKey>` instance using the provided `algorithm`, `extractable`, and `keyUsages` arguments.
+             * If the import is successful, the returned promise will be resolved with the created `<CryptoKey>`.
+             *
+             * If importing a `'PBKDF2'` key, `extractable` must be `false`.
+             * @param format Must be one of `'raw'`, `'pkcs8'`, `'spki'`, or `'jwk'`.
+             * @param keyUsages See {@link https://nodejs.org/docs/latest/api/webcrypto.html#cryptokeyusages Key usages}.
+             * @since v15.0.0
+             */
+            importKey(
+                format: 'jwk',
+                keyData: JsonWebKey,
+                algorithm: AlgorithmIdentifier | RsaHashedImportParams | EcKeyImportParams | HmacImportParams | AesKeyAlgorithm,
+                extractable: boolean,
+                keyUsages: ReadonlyArray<KeyUsage>
+            ): Promise<CryptoKey>;
+            importKey(
+                format: Exclude<KeyFormat, 'jwk'>,
+                keyData: BufferSource,
+                algorithm: AlgorithmIdentifier | RsaHashedImportParams | EcKeyImportParams | HmacImportParams | AesKeyAlgorithm,
+                extractable: boolean,
+                keyUsages: KeyUsage[]
+            ): Promise<CryptoKey>;
+            /**
+             * Using the method and parameters given by `algorithm` and the keying material provided by `key`,
+             * `subtle.sign()` attempts to generate a cryptographic signature of `data`. If successful,
+             * the returned promise is resolved with an `<ArrayBuffer>` containing the generated signature.
+             *
+             * The algorithms currently supported include:
+             *
+             * - `'RSASSA-PKCS1-v1_5'`
+             * - `'RSA-PSS'`
+             * - `'ECDSA'`
+             * - `'Ed25519'`
+             * - `'Ed448'`
+             * - `'HMAC'`
+             * @since v15.0.0
+             */
+            sign(algorithm: AlgorithmIdentifier | RsaPssParams | EcdsaParams | Ed448Params, key: CryptoKey, data: BufferSource): Promise<ArrayBuffer>;
+            /**
+             * In cryptography, "wrapping a key" refers to exporting and then encrypting the keying material.
+             * The `subtle.unwrapKey()` method attempts to decrypt a wrapped key and create a `<CryptoKey>` instance.
+             * It is equivalent to calling `subtle.decrypt()` first on the encrypted key data (using the `wrappedKey`, `unwrapAlgo`, and `unwrappingKey` arguments as input)
+             * then passing the results in to the `subtle.importKey()` method using the `unwrappedKeyAlgo`, `extractable`, and `keyUsages` arguments as inputs.
+             * If successful, the returned promise is resolved with a `<CryptoKey>` object.
+             *
+             * The wrapping algorithms currently supported include:
+             *
+             * - `'RSA-OAEP'`
+             * - `'AES-CTR'`
+             * - `'AES-CBC'`
+             * - `'AES-GCM'`
+             * - `'AES-KW'`
+             *
+             * The unwrapped key algorithms supported include:
+             *
+             * - `'RSASSA-PKCS1-v1_5'`
+             * - `'RSA-PSS'`
+             * - `'RSA-OAEP'`
+             * - `'ECDSA'`
+             * - `'Ed25519'`
+             * - `'Ed448'`
+             * - `'ECDH'`
+             * - `'X25519'`
+             * - `'X448'`
+             * - `'HMAC'`
+             * - `'AES-CTR'`
+             * - `'AES-CBC'`
+             * - `'AES-GCM'`
+             * - `'AES-KW'`
+             * @param format Must be one of `'raw'`, `'pkcs8'`, `'spki'`, or `'jwk'`.
+             * @param keyUsages See {@link https://nodejs.org/docs/latest/api/webcrypto.html#cryptokeyusages Key usages}.
+             * @since v15.0.0
+             */
+            unwrapKey(
+                format: KeyFormat,
+                wrappedKey: BufferSource,
+                unwrappingKey: CryptoKey,
+                unwrapAlgorithm: AlgorithmIdentifier | RsaOaepParams | AesCtrParams | AesCbcParams | AesGcmParams,
+                unwrappedKeyAlgorithm: AlgorithmIdentifier | RsaHashedImportParams | EcKeyImportParams | HmacImportParams | AesKeyAlgorithm,
+                extractable: boolean,
+                keyUsages: KeyUsage[]
+            ): Promise<CryptoKey>;
+            /**
+             * Using the method and parameters given in `algorithm` and the keying material provided by `key`,
+             * `subtle.verify()` attempts to verify that `signature` is a valid cryptographic signature of `data`.
+             * The returned promise is resolved with either `true` or `false`.
+             *
+             * The algorithms currently supported include:
+             *
+             * - `'RSASSA-PKCS1-v1_5'`
+             * - `'RSA-PSS'`
+             * - `'ECDSA'`
+             * - `'Ed25519'`
+             * - `'Ed448'`
+             * - `'HMAC'`
+             * @since v15.0.0
+             */
+            verify(algorithm: AlgorithmIdentifier | RsaPssParams | EcdsaParams | Ed448Params, key: CryptoKey, signature: BufferSource, data: BufferSource): Promise<boolean>;
+            /**
+             * In cryptography, "wrapping a key" refers to exporting and then encrypting the keying material.
+             * The `subtle.wrapKey()` method exports the keying material into the format identified by `format`,
+             * then encrypts it using the method and parameters specified by `wrapAlgo` and the keying material provided by `wrappingKey`.
+             * It is the equivalent to calling `subtle.exportKey()` using `format` and `key` as the arguments,
+             * then passing the result to the `subtle.encrypt()` method using `wrappingKey` and `wrapAlgo` as inputs.
+             * If successful, the returned promise will be resolved with an `<ArrayBuffer>` containing the encrypted key data.
+             *
+             * The wrapping algorithms currently supported include:
+             *
+             * - `'RSA-OAEP'`
+             * - `'AES-CTR'`
+             * - `'AES-CBC'`
+             * - `'AES-GCM'`
+             * - `'AES-KW'`
+             * @param format Must be one of `'raw'`, `'pkcs8'`, `'spki'`, or `'jwk'`.
+             * @since v15.0.0
+             */
+            wrapKey(format: KeyFormat, key: CryptoKey, wrappingKey: CryptoKey, wrapAlgorithm: AlgorithmIdentifier | RsaOaepParams | AesCtrParams | AesCbcParams | AesGcmParams): Promise<ArrayBuffer>;
+        }
+    }
+}
+declare module 'node:crypto' {
+    export * from 'crypto';
+}
diff --git a/igv_component/node_modules/@types/node/dgram.d.ts b/igv_component/node_modules/@types/node/dgram.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..247328d28b72328bcc380fe0e482647eff3631ff
--- /dev/null
+++ b/igv_component/node_modules/@types/node/dgram.d.ts
@@ -0,0 +1,545 @@
+/**
+ * The `dgram` module provides an implementation of UDP datagram sockets.
+ *
+ * ```js
+ * import dgram from 'dgram';
+ *
+ * const server = dgram.createSocket('udp4');
+ *
+ * server.on('error', (err) => {
+ *   console.log(`server error:\n${err.stack}`);
+ *   server.close();
+ * });
+ *
+ * server.on('message', (msg, rinfo) => {
+ *   console.log(`server got: ${msg} from ${rinfo.address}:${rinfo.port}`);
+ * });
+ *
+ * server.on('listening', () => {
+ *   const address = server.address();
+ *   console.log(`server listening ${address.address}:${address.port}`);
+ * });
+ *
+ * server.bind(41234);
+ * // Prints: server listening 0.0.0.0:41234
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/dgram.js)
+ */
+declare module 'dgram' {
+    import { AddressInfo } from 'node:net';
+    import * as dns from 'node:dns';
+    import { EventEmitter, Abortable } from 'node:events';
+    interface RemoteInfo {
+        address: string;
+        family: 'IPv4' | 'IPv6';
+        port: number;
+        size: number;
+    }
+    interface BindOptions {
+        port?: number | undefined;
+        address?: string | undefined;
+        exclusive?: boolean | undefined;
+        fd?: number | undefined;
+    }
+    type SocketType = 'udp4' | 'udp6';
+    interface SocketOptions extends Abortable {
+        type: SocketType;
+        reuseAddr?: boolean | undefined;
+        /**
+         * @default false
+         */
+        ipv6Only?: boolean | undefined;
+        recvBufferSize?: number | undefined;
+        sendBufferSize?: number | undefined;
+        lookup?: ((hostname: string, options: dns.LookupOneOptions, callback: (err: NodeJS.ErrnoException | null, address: string, family: number) => void) => void) | undefined;
+    }
+    /**
+     * Creates a `dgram.Socket` object. Once the socket is created, calling `socket.bind()` will instruct the socket to begin listening for datagram
+     * messages. When `address` and `port` are not passed to `socket.bind()` the
+     * method will bind the socket to the "all interfaces" address on a random port
+     * (it does the right thing for both `udp4` and `udp6` sockets). The bound address
+     * and port can be retrieved using `socket.address().address` and `socket.address().port`.
+     *
+     * If the `signal` option is enabled, calling `.abort()` on the corresponding`AbortController` is similar to calling `.close()` on the socket:
+     *
+     * ```js
+     * const controller = new AbortController();
+     * const { signal } = controller;
+     * const server = dgram.createSocket({ type: 'udp4', signal });
+     * server.on('message', (msg, rinfo) => {
+     *   console.log(`server got: ${msg} from ${rinfo.address}:${rinfo.port}`);
+     * });
+     * // Later, when you want to close the server.
+     * controller.abort();
+     * ```
+     * @since v0.11.13
+     * @param options Available options are:
+     * @param callback Attached as a listener for `'message'` events. Optional.
+     */
+    function createSocket(type: SocketType, callback?: (msg: Buffer, rinfo: RemoteInfo) => void): Socket;
+    function createSocket(options: SocketOptions, callback?: (msg: Buffer, rinfo: RemoteInfo) => void): Socket;
+    /**
+     * Encapsulates the datagram functionality.
+     *
+     * New instances of `dgram.Socket` are created using {@link createSocket}.
+     * The `new` keyword is not to be used to create `dgram.Socket` instances.
+     * @since v0.1.99
+     */
+    class Socket extends EventEmitter {
+        /**
+         * Tells the kernel to join a multicast group at the given `multicastAddress` and`multicastInterface` using the `IP_ADD_MEMBERSHIP` socket option. If the`multicastInterface` argument is not
+         * specified, the operating system will choose
+         * one interface and will add membership to it. To add membership to every
+         * available interface, call `addMembership` multiple times, once per interface.
+         *
+         * When called on an unbound socket, this method will implicitly bind to a random
+         * port, listening on all interfaces.
+         *
+         * When sharing a UDP socket across multiple `cluster` workers, the`socket.addMembership()` function must be called only once or an`EADDRINUSE` error will occur:
+         *
+         * ```js
+         * import cluster from 'cluster';
+         * import dgram from 'dgram';
+         *
+         * if (cluster.isPrimary) {
+         *   cluster.fork(); // Works ok.
+         *   cluster.fork(); // Fails with EADDRINUSE.
+         * } else {
+         *   const s = dgram.createSocket('udp4');
+         *   s.bind(1234, () => {
+         *     s.addMembership('224.0.0.114');
+         *   });
+         * }
+         * ```
+         * @since v0.6.9
+         */
+        addMembership(multicastAddress: string, multicastInterface?: string): void;
+        /**
+         * Returns an object containing the address information for a socket.
+         * For UDP sockets, this object will contain `address`, `family` and `port`properties.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         * @since v0.1.99
+         */
+        address(): AddressInfo;
+        /**
+         * For UDP sockets, causes the `dgram.Socket` to listen for datagram
+         * messages on a named `port` and optional `address`. If `port` is not
+         * specified or is `0`, the operating system will attempt to bind to a
+         * random port. If `address` is not specified, the operating system will
+         * attempt to listen on all addresses. Once binding is complete, a`'listening'` event is emitted and the optional `callback` function is
+         * called.
+         *
+         * Specifying both a `'listening'` event listener and passing a`callback` to the `socket.bind()` method is not harmful but not very
+         * useful.
+         *
+         * A bound datagram socket keeps the Node.js process running to receive
+         * datagram messages.
+         *
+         * If binding fails, an `'error'` event is generated. In rare case (e.g.
+         * attempting to bind with a closed socket), an `Error` may be thrown.
+         *
+         * Example of a UDP server listening on port 41234:
+         *
+         * ```js
+         * import dgram from 'dgram';
+         *
+         * const server = dgram.createSocket('udp4');
+         *
+         * server.on('error', (err) => {
+         *   console.log(`server error:\n${err.stack}`);
+         *   server.close();
+         * });
+         *
+         * server.on('message', (msg, rinfo) => {
+         *   console.log(`server got: ${msg} from ${rinfo.address}:${rinfo.port}`);
+         * });
+         *
+         * server.on('listening', () => {
+         *   const address = server.address();
+         *   console.log(`server listening ${address.address}:${address.port}`);
+         * });
+         *
+         * server.bind(41234);
+         * // Prints: server listening 0.0.0.0:41234
+         * ```
+         * @since v0.1.99
+         * @param callback with no parameters. Called when binding is complete.
+         */
+        bind(port?: number, address?: string, callback?: () => void): this;
+        bind(port?: number, callback?: () => void): this;
+        bind(callback?: () => void): this;
+        bind(options: BindOptions, callback?: () => void): this;
+        /**
+         * Close the underlying socket and stop listening for data on it. If a callback is
+         * provided, it is added as a listener for the `'close'` event.
+         * @since v0.1.99
+         * @param callback Called when the socket has been closed.
+         */
+        close(callback?: () => void): this;
+        /**
+         * Associates the `dgram.Socket` to a remote address and port. Every
+         * message sent by this handle is automatically sent to that destination. Also,
+         * the socket will only receive messages from that remote peer.
+         * Trying to call `connect()` on an already connected socket will result
+         * in an `ERR_SOCKET_DGRAM_IS_CONNECTED` exception. If `address` is not
+         * provided, `'127.0.0.1'` (for `udp4` sockets) or `'::1'` (for `udp6` sockets)
+         * will be used by default. Once the connection is complete, a `'connect'` event
+         * is emitted and the optional `callback` function is called. In case of failure,
+         * the `callback` is called or, failing this, an `'error'` event is emitted.
+         * @since v12.0.0
+         * @param callback Called when the connection is completed or on error.
+         */
+        connect(port: number, address?: string, callback?: () => void): void;
+        connect(port: number, callback: () => void): void;
+        /**
+         * A synchronous function that disassociates a connected `dgram.Socket` from
+         * its remote address. Trying to call `disconnect()` on an unbound or already
+         * disconnected socket will result in an `ERR_SOCKET_DGRAM_NOT_CONNECTED` exception.
+         * @since v12.0.0
+         */
+        disconnect(): void;
+        /**
+         * Instructs the kernel to leave a multicast group at `multicastAddress` using the`IP_DROP_MEMBERSHIP` socket option. This method is automatically called by the
+         * kernel when the socket is closed or the process terminates, so most apps will
+         * never have reason to call this.
+         *
+         * If `multicastInterface` is not specified, the operating system will attempt to
+         * drop membership on all valid interfaces.
+         * @since v0.6.9
+         */
+        dropMembership(multicastAddress: string, multicastInterface?: string): void;
+        /**
+         * This method throws `ERR_SOCKET_BUFFER_SIZE` if called on an unbound socket.
+         * @since v8.7.0
+         * @return the `SO_RCVBUF` socket receive buffer size in bytes.
+         */
+        getRecvBufferSize(): number;
+        /**
+         * This method throws `ERR_SOCKET_BUFFER_SIZE` if called on an unbound socket.
+         * @since v8.7.0
+         * @return the `SO_SNDBUF` socket send buffer size in bytes.
+         */
+        getSendBufferSize(): number;
+        /**
+         * By default, binding a socket will cause it to block the Node.js process from
+         * exiting as long as the socket is open. The `socket.unref()` method can be used
+         * to exclude the socket from the reference counting that keeps the Node.js
+         * process active. The `socket.ref()` method adds the socket back to the reference
+         * counting and restores the default behavior.
+         *
+         * Calling `socket.ref()` multiples times will have no additional effect.
+         *
+         * The `socket.ref()` method returns a reference to the socket so calls can be
+         * chained.
+         * @since v0.9.1
+         */
+        ref(): this;
+        /**
+         * Returns an object containing the `address`, `family`, and `port` of the remote
+         * endpoint. This method throws an `ERR_SOCKET_DGRAM_NOT_CONNECTED` exception
+         * if the socket is not connected.
+         * @since v12.0.0
+         */
+        remoteAddress(): AddressInfo;
+        /**
+         * Broadcasts a datagram on the socket.
+         * For connectionless sockets, the destination `port` and `address` must be
+         * specified. Connected sockets, on the other hand, will use their associated
+         * remote endpoint, so the `port` and `address` arguments must not be set.
+         *
+         * The `msg` argument contains the message to be sent.
+         * Depending on its type, different behavior can apply. If `msg` is a `Buffer`,
+         * any `TypedArray` or a `DataView`,
+         * the `offset` and `length` specify the offset within the `Buffer` where the
+         * message begins and the number of bytes in the message, respectively.
+         * If `msg` is a `String`, then it is automatically converted to a `Buffer`with `'utf8'` encoding. With messages that
+         * contain multi-byte characters, `offset` and `length` will be calculated with
+         * respect to `byte length` and not the character position.
+         * If `msg` is an array, `offset` and `length` must not be specified.
+         *
+         * The `address` argument is a string. If the value of `address` is a host name,
+         * DNS will be used to resolve the address of the host. If `address` is not
+         * provided or otherwise nullish, `'127.0.0.1'` (for `udp4` sockets) or `'::1'`(for `udp6` sockets) will be used by default.
+         *
+         * If the socket has not been previously bound with a call to `bind`, the socket
+         * is assigned a random port number and is bound to the "all interfaces" address
+         * (`'0.0.0.0'` for `udp4` sockets, `'::0'` for `udp6` sockets.)
+         *
+         * An optional `callback` function may be specified to as a way of reporting
+         * DNS errors or for determining when it is safe to reuse the `buf` object.
+         * DNS lookups delay the time to send for at least one tick of the
+         * Node.js event loop.
+         *
+         * The only way to know for sure that the datagram has been sent is by using a`callback`. If an error occurs and a `callback` is given, the error will be
+         * passed as the first argument to the `callback`. If a `callback` is not given,
+         * the error is emitted as an `'error'` event on the `socket` object.
+         *
+         * Offset and length are optional but both _must_ be set if either are used.
+         * They are supported only when the first argument is a `Buffer`, a `TypedArray`,
+         * or a `DataView`.
+         *
+         * This method throws `ERR_SOCKET_BAD_PORT` if called on an unbound socket.
+         *
+         * Example of sending a UDP packet to a port on `localhost`;
+         *
+         * ```js
+         * import dgram from 'dgram';
+         * import { Buffer } from 'buffer';
+         *
+         * const message = Buffer.from('Some bytes');
+         * const client = dgram.createSocket('udp4');
+         * client.send(message, 41234, 'localhost', (err) => {
+         *   client.close();
+         * });
+         * ```
+         *
+         * Example of sending a UDP packet composed of multiple buffers to a port on`127.0.0.1`;
+         *
+         * ```js
+         * import dgram from 'dgram';
+         * import { Buffer } from 'buffer';
+         *
+         * const buf1 = Buffer.from('Some ');
+         * const buf2 = Buffer.from('bytes');
+         * const client = dgram.createSocket('udp4');
+         * client.send([buf1, buf2], 41234, (err) => {
+         *   client.close();
+         * });
+         * ```
+         *
+         * Sending multiple buffers might be faster or slower depending on the
+         * application and operating system. Run benchmarks to
+         * determine the optimal strategy on a case-by-case basis. Generally speaking,
+         * however, sending multiple buffers is faster.
+         *
+         * Example of sending a UDP packet using a socket connected to a port on`localhost`:
+         *
+         * ```js
+         * import dgram from 'dgram';
+         * import { Buffer } from 'buffer';
+         *
+         * const message = Buffer.from('Some bytes');
+         * const client = dgram.createSocket('udp4');
+         * client.connect(41234, 'localhost', (err) => {
+         *   client.send(message, (err) => {
+         *     client.close();
+         *   });
+         * });
+         * ```
+         * @since v0.1.99
+         * @param msg Message to be sent.
+         * @param offset Offset in the buffer where the message starts.
+         * @param length Number of bytes in the message.
+         * @param port Destination port.
+         * @param address Destination host name or IP address.
+         * @param callback Called when the message has been sent.
+         */
+        send(msg: string | Uint8Array | ReadonlyArray<any>, port?: number, address?: string, callback?: (error: Error | null, bytes: number) => void): void;
+        send(msg: string | Uint8Array | ReadonlyArray<any>, port?: number, callback?: (error: Error | null, bytes: number) => void): void;
+        send(msg: string | Uint8Array | ReadonlyArray<any>, callback?: (error: Error | null, bytes: number) => void): void;
+        send(msg: string | Uint8Array, offset: number, length: number, port?: number, address?: string, callback?: (error: Error | null, bytes: number) => void): void;
+        send(msg: string | Uint8Array, offset: number, length: number, port?: number, callback?: (error: Error | null, bytes: number) => void): void;
+        send(msg: string | Uint8Array, offset: number, length: number, callback?: (error: Error | null, bytes: number) => void): void;
+        /**
+         * Sets or clears the `SO_BROADCAST` socket option. When set to `true`, UDP
+         * packets may be sent to a local interface's broadcast address.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         * @since v0.6.9
+         */
+        setBroadcast(flag: boolean): void;
+        /**
+         * _All references to scope in this section are referring to [IPv6 Zone Indices](https://en.wikipedia.org/wiki/IPv6_address#Scoped_literal_IPv6_addresses), which are defined by [RFC
+         * 4007](https://tools.ietf.org/html/rfc4007). In string form, an IP_
+         * _with a scope index is written as `'IP%scope'` where scope is an interface name_
+         * _or interface number._
+         *
+         * Sets the default outgoing multicast interface of the socket to a chosen
+         * interface or back to system interface selection. The `multicastInterface` must
+         * be a valid string representation of an IP from the socket's family.
+         *
+         * For IPv4 sockets, this should be the IP configured for the desired physical
+         * interface. All packets sent to multicast on the socket will be sent on the
+         * interface determined by the most recent successful use of this call.
+         *
+         * For IPv6 sockets, `multicastInterface` should include a scope to indicate the
+         * interface as in the examples that follow. In IPv6, individual `send` calls can
+         * also use explicit scope in addresses, so only packets sent to a multicast
+         * address without specifying an explicit scope are affected by the most recent
+         * successful use of this call.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         *
+         * #### Example: IPv6 outgoing multicast interface
+         *
+         * On most systems, where scope format uses the interface name:
+         *
+         * ```js
+         * const socket = dgram.createSocket('udp6');
+         *
+         * socket.bind(1234, () => {
+         *   socket.setMulticastInterface('::%eth1');
+         * });
+         * ```
+         *
+         * On Windows, where scope format uses an interface number:
+         *
+         * ```js
+         * const socket = dgram.createSocket('udp6');
+         *
+         * socket.bind(1234, () => {
+         *   socket.setMulticastInterface('::%2');
+         * });
+         * ```
+         *
+         * #### Example: IPv4 outgoing multicast interface
+         *
+         * All systems use an IP of the host on the desired physical interface:
+         *
+         * ```js
+         * const socket = dgram.createSocket('udp4');
+         *
+         * socket.bind(1234, () => {
+         *   socket.setMulticastInterface('10.0.0.2');
+         * });
+         * ```
+         * @since v8.6.0
+         */
+        setMulticastInterface(multicastInterface: string): void;
+        /**
+         * Sets or clears the `IP_MULTICAST_LOOP` socket option. When set to `true`,
+         * multicast packets will also be received on the local interface.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         * @since v0.3.8
+         */
+        setMulticastLoopback(flag: boolean): boolean;
+        /**
+         * Sets the `IP_MULTICAST_TTL` socket option. While TTL generally stands for
+         * "Time to Live", in this context it specifies the number of IP hops that a
+         * packet is allowed to travel through, specifically for multicast traffic. Each
+         * router or gateway that forwards a packet decrements the TTL. If the TTL is
+         * decremented to 0 by a router, it will not be forwarded.
+         *
+         * The `ttl` argument may be between 0 and 255\. The default on most systems is `1`.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         * @since v0.3.8
+         */
+        setMulticastTTL(ttl: number): number;
+        /**
+         * Sets the `SO_RCVBUF` socket option. Sets the maximum socket receive buffer
+         * in bytes.
+         *
+         * This method throws `ERR_SOCKET_BUFFER_SIZE` if called on an unbound socket.
+         * @since v8.7.0
+         */
+        setRecvBufferSize(size: number): void;
+        /**
+         * Sets the `SO_SNDBUF` socket option. Sets the maximum socket send buffer
+         * in bytes.
+         *
+         * This method throws `ERR_SOCKET_BUFFER_SIZE` if called on an unbound socket.
+         * @since v8.7.0
+         */
+        setSendBufferSize(size: number): void;
+        /**
+         * Sets the `IP_TTL` socket option. While TTL generally stands for "Time to Live",
+         * in this context it specifies the number of IP hops that a packet is allowed to
+         * travel through. Each router or gateway that forwards a packet decrements the
+         * TTL. If the TTL is decremented to 0 by a router, it will not be forwarded.
+         * Changing TTL values is typically done for network probes or when multicasting.
+         *
+         * The `ttl` argument may be between 1 and 255\. The default on most systems
+         * is 64.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         * @since v0.1.101
+         */
+        setTTL(ttl: number): number;
+        /**
+         * By default, binding a socket will cause it to block the Node.js process from
+         * exiting as long as the socket is open. The `socket.unref()` method can be used
+         * to exclude the socket from the reference counting that keeps the Node.js
+         * process active, allowing the process to exit even if the socket is still
+         * listening.
+         *
+         * Calling `socket.unref()` multiple times will have no addition effect.
+         *
+         * The `socket.unref()` method returns a reference to the socket so calls can be
+         * chained.
+         * @since v0.9.1
+         */
+        unref(): this;
+        /**
+         * Tells the kernel to join a source-specific multicast channel at the given`sourceAddress` and `groupAddress`, using the `multicastInterface` with the`IP_ADD_SOURCE_MEMBERSHIP` socket
+         * option. If the `multicastInterface` argument
+         * is not specified, the operating system will choose one interface and will add
+         * membership to it. To add membership to every available interface, call`socket.addSourceSpecificMembership()` multiple times, once per interface.
+         *
+         * When called on an unbound socket, this method will implicitly bind to a random
+         * port, listening on all interfaces.
+         * @since v13.1.0, v12.16.0
+         */
+        addSourceSpecificMembership(sourceAddress: string, groupAddress: string, multicastInterface?: string): void;
+        /**
+         * Instructs the kernel to leave a source-specific multicast channel at the given`sourceAddress` and `groupAddress` using the `IP_DROP_SOURCE_MEMBERSHIP`socket option. This method is
+         * automatically called by the kernel when the
+         * socket is closed or the process terminates, so most apps will never have
+         * reason to call this.
+         *
+         * If `multicastInterface` is not specified, the operating system will attempt to
+         * drop membership on all valid interfaces.
+         * @since v13.1.0, v12.16.0
+         */
+        dropSourceSpecificMembership(sourceAddress: string, groupAddress: string, multicastInterface?: string): void;
+        /**
+         * events.EventEmitter
+         * 1. close
+         * 2. connect
+         * 3. error
+         * 4. listening
+         * 5. message
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'connect', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'listening', listener: () => void): this;
+        addListener(event: 'message', listener: (msg: Buffer, rinfo: RemoteInfo) => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'connect'): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'listening'): boolean;
+        emit(event: 'message', msg: Buffer, rinfo: RemoteInfo): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'connect', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'listening', listener: () => void): this;
+        on(event: 'message', listener: (msg: Buffer, rinfo: RemoteInfo) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'connect', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'listening', listener: () => void): this;
+        once(event: 'message', listener: (msg: Buffer, rinfo: RemoteInfo) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'connect', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'listening', listener: () => void): this;
+        prependListener(event: 'message', listener: (msg: Buffer, rinfo: RemoteInfo) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'connect', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'listening', listener: () => void): this;
+        prependOnceListener(event: 'message', listener: (msg: Buffer, rinfo: RemoteInfo) => void): this;
+    }
+}
+declare module 'node:dgram' {
+    export * from 'dgram';
+}
diff --git a/igv_component/node_modules/@types/node/diagnostics_channel.d.ts b/igv_component/node_modules/@types/node/diagnostics_channel.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a87ba8ca9f59da1e13b202ec277281254d4483e0
--- /dev/null
+++ b/igv_component/node_modules/@types/node/diagnostics_channel.d.ts
@@ -0,0 +1,153 @@
+/**
+ * The `diagnostics_channel` module provides an API to create named channels
+ * to report arbitrary message data for diagnostics purposes.
+ *
+ * It can be accessed using:
+ *
+ * ```js
+ * import diagnostics_channel from 'diagnostics_channel';
+ * ```
+ *
+ * It is intended that a module writer wanting to report diagnostics messages
+ * will create one or many top-level channels to report messages through.
+ * Channels may also be acquired at runtime but it is not encouraged
+ * due to the additional overhead of doing so. Channels may be exported for
+ * convenience, but as long as the name is known it can be acquired anywhere.
+ *
+ * If you intend for your module to produce diagnostics data for others to
+ * consume it is recommended that you include documentation of what named
+ * channels are used along with the shape of the message data. Channel names
+ * should generally include the module name to avoid collisions with data from
+ * other modules.
+ * @experimental
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/diagnostics_channel.js)
+ */
+declare module 'diagnostics_channel' {
+    /**
+     * Check if there are active subscribers to the named channel. This is helpful if
+     * the message you want to send might be expensive to prepare.
+     *
+     * This API is optional but helpful when trying to publish messages from very
+     * performance-sensitive code.
+     *
+     * ```js
+     * import diagnostics_channel from 'diagnostics_channel';
+     *
+     * if (diagnostics_channel.hasSubscribers('my-channel')) {
+     *   // There are subscribers, prepare and publish message
+     * }
+     * ```
+     * @since v15.1.0, v14.17.0
+     * @param name The channel name
+     * @return If there are active subscribers
+     */
+    function hasSubscribers(name: string): boolean;
+    /**
+     * This is the primary entry-point for anyone wanting to interact with a named
+     * channel. It produces a channel object which is optimized to reduce overhead at
+     * publish time as much as possible.
+     *
+     * ```js
+     * import diagnostics_channel from 'diagnostics_channel';
+     *
+     * const channel = diagnostics_channel.channel('my-channel');
+     * ```
+     * @since v15.1.0, v14.17.0
+     * @param name The channel name
+     * @return The named channel object
+     */
+    function channel(name: string): Channel;
+    type ChannelListener = (message: unknown, name: string) => void;
+    /**
+     * The class `Channel` represents an individual named channel within the data
+     * pipeline. It is use to track subscribers and to publish messages when there
+     * are subscribers present. It exists as a separate object to avoid channel
+     * lookups at publish time, enabling very fast publish speeds and allowing
+     * for heavy use while incurring very minimal cost. Channels are created with {@link channel}, constructing a channel directly
+     * with `new Channel(name)` is not supported.
+     * @since v15.1.0, v14.17.0
+     */
+    class Channel {
+        readonly name: string;
+        /**
+         * Check if there are active subscribers to this channel. This is helpful if
+         * the message you want to send might be expensive to prepare.
+         *
+         * This API is optional but helpful when trying to publish messages from very
+         * performance-sensitive code.
+         *
+         * ```js
+         * import diagnostics_channel from 'diagnostics_channel';
+         *
+         * const channel = diagnostics_channel.channel('my-channel');
+         *
+         * if (channel.hasSubscribers) {
+         *   // There are subscribers, prepare and publish message
+         * }
+         * ```
+         * @since v15.1.0, v14.17.0
+         */
+        readonly hasSubscribers: boolean;
+        private constructor(name: string);
+        /**
+         * Publish a message to any subscribers to the channel. This will
+         * trigger message handlers synchronously so they will execute within
+         * the same context.
+         *
+         * ```js
+         * import diagnostics_channel from 'diagnostics_channel';
+         *
+         * const channel = diagnostics_channel.channel('my-channel');
+         *
+         * channel.publish({
+         *   some: 'message'
+         * });
+         * ```
+         * @since v15.1.0, v14.17.0
+         * @param message The message to send to the channel subscribers
+         */
+        publish(message: unknown): void;
+        /**
+         * Register a message handler to subscribe to this channel. This message handler
+         * will be run synchronously whenever a message is published to the channel. Any
+         * errors thrown in the message handler will trigger an `'uncaughtException'`.
+         *
+         * ```js
+         * import diagnostics_channel from 'diagnostics_channel';
+         *
+         * const channel = diagnostics_channel.channel('my-channel');
+         *
+         * channel.subscribe((message, name) => {
+         *   // Received data
+         * });
+         * ```
+         * @since v15.1.0, v14.17.0
+         * @param onMessage The handler to receive channel messages
+         */
+        subscribe(onMessage: ChannelListener): void;
+        /**
+         * Remove a message handler previously registered to this channel with `channel.subscribe(onMessage)`.
+         *
+         * ```js
+         * import diagnostics_channel from 'diagnostics_channel';
+         *
+         * const channel = diagnostics_channel.channel('my-channel');
+         *
+         * function onMessage(message, name) {
+         *   // Received data
+         * }
+         *
+         * channel.subscribe(onMessage);
+         *
+         * channel.unsubscribe(onMessage);
+         * ```
+         * @since v15.1.0, v14.17.0
+         * @param onMessage The previous subscribed handler to remove
+         * @return `true` if the handler was found, `false` otherwise.
+         */
+        unsubscribe(onMessage: ChannelListener): void;
+    }
+}
+declare module 'node:diagnostics_channel' {
+    export * from 'diagnostics_channel';
+}
diff --git a/igv_component/node_modules/@types/node/dns.d.ts b/igv_component/node_modules/@types/node/dns.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..305367b81d17a30d1a914cda62fdaf25acf3567e
--- /dev/null
+++ b/igv_component/node_modules/@types/node/dns.d.ts
@@ -0,0 +1,659 @@
+/**
+ * The `dns` module enables name resolution. For example, use it to look up IP
+ * addresses of host names.
+ *
+ * Although named for the [Domain Name System (DNS)](https://en.wikipedia.org/wiki/Domain_Name_System), it does not always use the
+ * DNS protocol for lookups. {@link lookup} uses the operating system
+ * facilities to perform name resolution. It may not need to perform any network
+ * communication. To perform name resolution the way other applications on the same
+ * system do, use {@link lookup}.
+ *
+ * ```js
+ * const dns = require('dns');
+ *
+ * dns.lookup('example.org', (err, address, family) => {
+ *   console.log('address: %j family: IPv%s', address, family);
+ * });
+ * // address: "93.184.216.34" family: IPv4
+ * ```
+ *
+ * All other functions in the `dns` module connect to an actual DNS server to
+ * perform name resolution. They will always use the network to perform DNS
+ * queries. These functions do not use the same set of configuration files used by {@link lookup} (e.g. `/etc/hosts`). Use these functions to always perform
+ * DNS queries, bypassing other name-resolution facilities.
+ *
+ * ```js
+ * const dns = require('dns');
+ *
+ * dns.resolve4('archive.org', (err, addresses) => {
+ *   if (err) throw err;
+ *
+ *   console.log(`addresses: ${JSON.stringify(addresses)}`);
+ *
+ *   addresses.forEach((a) => {
+ *     dns.reverse(a, (err, hostnames) => {
+ *       if (err) {
+ *         throw err;
+ *       }
+ *       console.log(`reverse for ${a}: ${JSON.stringify(hostnames)}`);
+ *     });
+ *   });
+ * });
+ * ```
+ *
+ * See the `Implementation considerations section` for more information.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/dns.js)
+ */
+declare module 'dns' {
+    import * as dnsPromises from 'node:dns/promises';
+    // Supported getaddrinfo flags.
+    export const ADDRCONFIG: number;
+    export const V4MAPPED: number;
+    /**
+     * If `dns.V4MAPPED` is specified, return resolved IPv6 addresses as
+     * well as IPv4 mapped IPv6 addresses.
+     */
+    export const ALL: number;
+    export interface LookupOptions {
+        family?: number | undefined;
+        hints?: number | undefined;
+        all?: boolean | undefined;
+        /**
+         * @default true
+         */
+        verbatim?: boolean | undefined;
+    }
+    export interface LookupOneOptions extends LookupOptions {
+        all?: false | undefined;
+    }
+    export interface LookupAllOptions extends LookupOptions {
+        all: true;
+    }
+    export interface LookupAddress {
+        address: string;
+        family: number;
+    }
+    /**
+     * Resolves a host name (e.g. `'nodejs.org'`) into the first found A (IPv4) or
+     * AAAA (IPv6) record. All `option` properties are optional. If `options` is an
+     * integer, then it must be `4` or `6` – if `options` is not provided, then IPv4
+     * and IPv6 addresses are both returned if found.
+     *
+     * With the `all` option set to `true`, the arguments for `callback` change to`(err, addresses)`, with `addresses` being an array of objects with the
+     * properties `address` and `family`.
+     *
+     * On error, `err` is an `Error` object, where `err.code` is the error code.
+     * Keep in mind that `err.code` will be set to `'ENOTFOUND'` not only when
+     * the host name does not exist but also when the lookup fails in other ways
+     * such as no available file descriptors.
+     *
+     * `dns.lookup()` does not necessarily have anything to do with the DNS protocol.
+     * The implementation uses an operating system facility that can associate names
+     * with addresses, and vice versa. This implementation can have subtle but
+     * important consequences on the behavior of any Node.js program. Please take some
+     * time to consult the `Implementation considerations section` before using`dns.lookup()`.
+     *
+     * Example usage:
+     *
+     * ```js
+     * const dns = require('dns');
+     * const options = {
+     *   family: 6,
+     *   hints: dns.ADDRCONFIG | dns.V4MAPPED,
+     * };
+     * dns.lookup('example.com', options, (err, address, family) =>
+     *   console.log('address: %j family: IPv%s', address, family));
+     * // address: "2606:2800:220:1:248:1893:25c8:1946" family: IPv6
+     *
+     * // When options.all is true, the result will be an Array.
+     * options.all = true;
+     * dns.lookup('example.com', options, (err, addresses) =>
+     *   console.log('addresses: %j', addresses));
+     * // addresses: [{"address":"2606:2800:220:1:248:1893:25c8:1946","family":6}]
+     * ```
+     *
+     * If this method is invoked as its `util.promisify()` ed version, and `all`is not set to `true`, it returns a `Promise` for an `Object` with `address` and`family` properties.
+     * @since v0.1.90
+     */
+    export function lookup(hostname: string, family: number, callback: (err: NodeJS.ErrnoException | null, address: string, family: number) => void): void;
+    export function lookup(hostname: string, options: LookupOneOptions, callback: (err: NodeJS.ErrnoException | null, address: string, family: number) => void): void;
+    export function lookup(hostname: string, options: LookupAllOptions, callback: (err: NodeJS.ErrnoException | null, addresses: LookupAddress[]) => void): void;
+    export function lookup(hostname: string, options: LookupOptions, callback: (err: NodeJS.ErrnoException | null, address: string | LookupAddress[], family: number) => void): void;
+    export function lookup(hostname: string, callback: (err: NodeJS.ErrnoException | null, address: string, family: number) => void): void;
+    export namespace lookup {
+        function __promisify__(hostname: string, options: LookupAllOptions): Promise<LookupAddress[]>;
+        function __promisify__(hostname: string, options?: LookupOneOptions | number): Promise<LookupAddress>;
+        function __promisify__(hostname: string, options: LookupOptions): Promise<LookupAddress | LookupAddress[]>;
+    }
+    /**
+     * Resolves the given `address` and `port` into a host name and service using
+     * the operating system's underlying `getnameinfo` implementation.
+     *
+     * If `address` is not a valid IP address, a `TypeError` will be thrown.
+     * The `port` will be coerced to a number. If it is not a legal port, a `TypeError`will be thrown.
+     *
+     * On an error, `err` is an `Error` object, where `err.code` is the error code.
+     *
+     * ```js
+     * const dns = require('dns');
+     * dns.lookupService('127.0.0.1', 22, (err, hostname, service) => {
+     *   console.log(hostname, service);
+     *   // Prints: localhost ssh
+     * });
+     * ```
+     *
+     * If this method is invoked as its `util.promisify()` ed version, it returns a`Promise` for an `Object` with `hostname` and `service` properties.
+     * @since v0.11.14
+     */
+    export function lookupService(address: string, port: number, callback: (err: NodeJS.ErrnoException | null, hostname: string, service: string) => void): void;
+    export namespace lookupService {
+        function __promisify__(
+            address: string,
+            port: number
+        ): Promise<{
+            hostname: string;
+            service: string;
+        }>;
+    }
+    export interface ResolveOptions {
+        ttl: boolean;
+    }
+    export interface ResolveWithTtlOptions extends ResolveOptions {
+        ttl: true;
+    }
+    export interface RecordWithTtl {
+        address: string;
+        ttl: number;
+    }
+    /** @deprecated Use `AnyARecord` or `AnyAaaaRecord` instead. */
+    export type AnyRecordWithTtl = AnyARecord | AnyAaaaRecord;
+    export interface AnyARecord extends RecordWithTtl {
+        type: 'A';
+    }
+    export interface AnyAaaaRecord extends RecordWithTtl {
+        type: 'AAAA';
+    }
+    export interface CaaRecord {
+        critial: number;
+        issue?: string | undefined;
+        issuewild?: string | undefined;
+        iodef?: string | undefined;
+        contactemail?: string | undefined;
+        contactphone?: string | undefined;
+    }
+    export interface MxRecord {
+        priority: number;
+        exchange: string;
+    }
+    export interface AnyMxRecord extends MxRecord {
+        type: 'MX';
+    }
+    export interface NaptrRecord {
+        flags: string;
+        service: string;
+        regexp: string;
+        replacement: string;
+        order: number;
+        preference: number;
+    }
+    export interface AnyNaptrRecord extends NaptrRecord {
+        type: 'NAPTR';
+    }
+    export interface SoaRecord {
+        nsname: string;
+        hostmaster: string;
+        serial: number;
+        refresh: number;
+        retry: number;
+        expire: number;
+        minttl: number;
+    }
+    export interface AnySoaRecord extends SoaRecord {
+        type: 'SOA';
+    }
+    export interface SrvRecord {
+        priority: number;
+        weight: number;
+        port: number;
+        name: string;
+    }
+    export interface AnySrvRecord extends SrvRecord {
+        type: 'SRV';
+    }
+    export interface AnyTxtRecord {
+        type: 'TXT';
+        entries: string[];
+    }
+    export interface AnyNsRecord {
+        type: 'NS';
+        value: string;
+    }
+    export interface AnyPtrRecord {
+        type: 'PTR';
+        value: string;
+    }
+    export interface AnyCnameRecord {
+        type: 'CNAME';
+        value: string;
+    }
+    export type AnyRecord = AnyARecord | AnyAaaaRecord | AnyCnameRecord | AnyMxRecord | AnyNaptrRecord | AnyNsRecord | AnyPtrRecord | AnySoaRecord | AnySrvRecord | AnyTxtRecord;
+    /**
+     * Uses the DNS protocol to resolve a host name (e.g. `'nodejs.org'`) into an array
+     * of the resource records. The `callback` function has arguments`(err, records)`. When successful, `records` will be an array of resource
+     * records. The type and structure of individual results varies based on `rrtype`:
+     *
+     * <omitted>
+     *
+     * On error, `err` is an `Error` object, where `err.code` is one of the `DNS error codes`.
+     * @since v0.1.27
+     * @param hostname Host name to resolve.
+     * @param [rrtype='A'] Resource record type.
+     */
+    export function resolve(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'A', callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'AAAA', callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'ANY', callback: (err: NodeJS.ErrnoException | null, addresses: AnyRecord[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'CNAME', callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'MX', callback: (err: NodeJS.ErrnoException | null, addresses: MxRecord[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'NAPTR', callback: (err: NodeJS.ErrnoException | null, addresses: NaptrRecord[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'NS', callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'PTR', callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'SOA', callback: (err: NodeJS.ErrnoException | null, addresses: SoaRecord) => void): void;
+    export function resolve(hostname: string, rrtype: 'SRV', callback: (err: NodeJS.ErrnoException | null, addresses: SrvRecord[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'TXT', callback: (err: NodeJS.ErrnoException | null, addresses: string[][]) => void): void;
+    export function resolve(
+        hostname: string,
+        rrtype: string,
+        callback: (err: NodeJS.ErrnoException | null, addresses: string[] | MxRecord[] | NaptrRecord[] | SoaRecord | SrvRecord[] | string[][] | AnyRecord[]) => void
+    ): void;
+    export namespace resolve {
+        function __promisify__(hostname: string, rrtype?: 'A' | 'AAAA' | 'CNAME' | 'NS' | 'PTR'): Promise<string[]>;
+        function __promisify__(hostname: string, rrtype: 'ANY'): Promise<AnyRecord[]>;
+        function __promisify__(hostname: string, rrtype: 'MX'): Promise<MxRecord[]>;
+        function __promisify__(hostname: string, rrtype: 'NAPTR'): Promise<NaptrRecord[]>;
+        function __promisify__(hostname: string, rrtype: 'SOA'): Promise<SoaRecord>;
+        function __promisify__(hostname: string, rrtype: 'SRV'): Promise<SrvRecord[]>;
+        function __promisify__(hostname: string, rrtype: 'TXT'): Promise<string[][]>;
+        function __promisify__(hostname: string, rrtype: string): Promise<string[] | MxRecord[] | NaptrRecord[] | SoaRecord | SrvRecord[] | string[][] | AnyRecord[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve a IPv4 addresses (`A` records) for the`hostname`. The `addresses` argument passed to the `callback` function
+     * will contain an array of IPv4 addresses (e.g.`['74.125.79.104', '74.125.79.105', '74.125.79.106']`).
+     * @since v0.1.16
+     * @param hostname Host name to resolve.
+     */
+    export function resolve4(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve4(hostname: string, options: ResolveWithTtlOptions, callback: (err: NodeJS.ErrnoException | null, addresses: RecordWithTtl[]) => void): void;
+    export function resolve4(hostname: string, options: ResolveOptions, callback: (err: NodeJS.ErrnoException | null, addresses: string[] | RecordWithTtl[]) => void): void;
+    export namespace resolve4 {
+        function __promisify__(hostname: string): Promise<string[]>;
+        function __promisify__(hostname: string, options: ResolveWithTtlOptions): Promise<RecordWithTtl[]>;
+        function __promisify__(hostname: string, options?: ResolveOptions): Promise<string[] | RecordWithTtl[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve a IPv6 addresses (`AAAA` records) for the`hostname`. The `addresses` argument passed to the `callback` function
+     * will contain an array of IPv6 addresses.
+     * @since v0.1.16
+     * @param hostname Host name to resolve.
+     */
+    export function resolve6(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve6(hostname: string, options: ResolveWithTtlOptions, callback: (err: NodeJS.ErrnoException | null, addresses: RecordWithTtl[]) => void): void;
+    export function resolve6(hostname: string, options: ResolveOptions, callback: (err: NodeJS.ErrnoException | null, addresses: string[] | RecordWithTtl[]) => void): void;
+    export namespace resolve6 {
+        function __promisify__(hostname: string): Promise<string[]>;
+        function __promisify__(hostname: string, options: ResolveWithTtlOptions): Promise<RecordWithTtl[]>;
+        function __promisify__(hostname: string, options?: ResolveOptions): Promise<string[] | RecordWithTtl[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve `CNAME` records for the `hostname`. The`addresses` argument passed to the `callback` function
+     * will contain an array of canonical name records available for the `hostname`(e.g. `['bar.example.com']`).
+     * @since v0.3.2
+     */
+    export function resolveCname(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export namespace resolveCname {
+        function __promisify__(hostname: string): Promise<string[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve `CAA` records for the `hostname`. The`addresses` argument passed to the `callback` function
+     * will contain an array of certification authority authorization records
+     * available for the `hostname` (e.g. `[{critical: 0, iodef: 'mailto:pki@example.com'}, {critical: 128, issue: 'pki.example.com'}]`).
+     * @since v15.0.0, v14.17.0
+     */
+    export function resolveCaa(hostname: string, callback: (err: NodeJS.ErrnoException | null, records: CaaRecord[]) => void): void;
+    export namespace resolveCaa {
+        function __promisify__(hostname: string): Promise<CaaRecord[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve mail exchange records (`MX` records) for the`hostname`. The `addresses` argument passed to the `callback` function will
+     * contain an array of objects containing both a `priority` and `exchange`property (e.g. `[{priority: 10, exchange: 'mx.example.com'}, ...]`).
+     * @since v0.1.27
+     */
+    export function resolveMx(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: MxRecord[]) => void): void;
+    export namespace resolveMx {
+        function __promisify__(hostname: string): Promise<MxRecord[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve regular expression based records (`NAPTR`records) for the `hostname`. The `addresses` argument passed to the `callback`function will contain an array of
+     * objects with the following properties:
+     *
+     * * `flags`
+     * * `service`
+     * * `regexp`
+     * * `replacement`
+     * * `order`
+     * * `preference`
+     *
+     * ```js
+     * {
+     *   flags: 's',
+     *   service: 'SIP+D2U',
+     *   regexp: '',
+     *   replacement: '_sip._udp.example.com',
+     *   order: 30,
+     *   preference: 100
+     * }
+     * ```
+     * @since v0.9.12
+     */
+    export function resolveNaptr(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: NaptrRecord[]) => void): void;
+    export namespace resolveNaptr {
+        function __promisify__(hostname: string): Promise<NaptrRecord[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve name server records (`NS` records) for the`hostname`. The `addresses` argument passed to the `callback` function will
+     * contain an array of name server records available for `hostname`(e.g. `['ns1.example.com', 'ns2.example.com']`).
+     * @since v0.1.90
+     */
+    export function resolveNs(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export namespace resolveNs {
+        function __promisify__(hostname: string): Promise<string[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve pointer records (`PTR` records) for the`hostname`. The `addresses` argument passed to the `callback` function will
+     * be an array of strings containing the reply records.
+     * @since v6.0.0
+     */
+    export function resolvePtr(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export namespace resolvePtr {
+        function __promisify__(hostname: string): Promise<string[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve a start of authority record (`SOA` record) for
+     * the `hostname`. The `address` argument passed to the `callback` function will
+     * be an object with the following properties:
+     *
+     * * `nsname`
+     * * `hostmaster`
+     * * `serial`
+     * * `refresh`
+     * * `retry`
+     * * `expire`
+     * * `minttl`
+     *
+     * ```js
+     * {
+     *   nsname: 'ns.example.com',
+     *   hostmaster: 'root.example.com',
+     *   serial: 2013101809,
+     *   refresh: 10000,
+     *   retry: 2400,
+     *   expire: 604800,
+     *   minttl: 3600
+     * }
+     * ```
+     * @since v0.11.10
+     */
+    export function resolveSoa(hostname: string, callback: (err: NodeJS.ErrnoException | null, address: SoaRecord) => void): void;
+    export namespace resolveSoa {
+        function __promisify__(hostname: string): Promise<SoaRecord>;
+    }
+    /**
+     * Uses the DNS protocol to resolve service records (`SRV` records) for the`hostname`. The `addresses` argument passed to the `callback` function will
+     * be an array of objects with the following properties:
+     *
+     * * `priority`
+     * * `weight`
+     * * `port`
+     * * `name`
+     *
+     * ```js
+     * {
+     *   priority: 10,
+     *   weight: 5,
+     *   port: 21223,
+     *   name: 'service.example.com'
+     * }
+     * ```
+     * @since v0.1.27
+     */
+    export function resolveSrv(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: SrvRecord[]) => void): void;
+    export namespace resolveSrv {
+        function __promisify__(hostname: string): Promise<SrvRecord[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve text queries (`TXT` records) for the`hostname`. The `records` argument passed to the `callback` function is a
+     * two-dimensional array of the text records available for `hostname` (e.g.`[ ['v=spf1 ip4:0.0.0.0 ', '~all' ] ]`). Each sub-array contains TXT chunks of
+     * one record. Depending on the use case, these could be either joined together or
+     * treated separately.
+     * @since v0.1.27
+     */
+    export function resolveTxt(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[][]) => void): void;
+    export namespace resolveTxt {
+        function __promisify__(hostname: string): Promise<string[][]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve all records (also known as `ANY` or `*` query).
+     * The `ret` argument passed to the `callback` function will be an array containing
+     * various types of records. Each object has a property `type` that indicates the
+     * type of the current record. And depending on the `type`, additional properties
+     * will be present on the object:
+     *
+     * <omitted>
+     *
+     * Here is an example of the `ret` object passed to the callback:
+     *
+     * ```js
+     * [ { type: 'A', address: '127.0.0.1', ttl: 299 },
+     *   { type: 'CNAME', value: 'example.com' },
+     *   { type: 'MX', exchange: 'alt4.aspmx.l.example.com', priority: 50 },
+     *   { type: 'NS', value: 'ns1.example.com' },
+     *   { type: 'TXT', entries: [ 'v=spf1 include:_spf.example.com ~all' ] },
+     *   { type: 'SOA',
+     *     nsname: 'ns1.example.com',
+     *     hostmaster: 'admin.example.com',
+     *     serial: 156696742,
+     *     refresh: 900,
+     *     retry: 900,
+     *     expire: 1800,
+     *     minttl: 60 } ]
+     * ```
+     *
+     * DNS server operators may choose not to respond to `ANY`queries. It may be better to call individual methods like {@link resolve4},{@link resolveMx}, and so on. For more details, see [RFC
+     * 8482](https://tools.ietf.org/html/rfc8482).
+     */
+    export function resolveAny(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: AnyRecord[]) => void): void;
+    export namespace resolveAny {
+        function __promisify__(hostname: string): Promise<AnyRecord[]>;
+    }
+    /**
+     * Performs a reverse DNS query that resolves an IPv4 or IPv6 address to an
+     * array of host names.
+     *
+     * On error, `err` is an `Error` object, where `err.code` is
+     * one of the `DNS error codes`.
+     * @since v0.1.16
+     */
+    export function reverse(ip: string, callback: (err: NodeJS.ErrnoException | null, hostnames: string[]) => void): void;
+    /**
+     * Sets the IP address and port of servers to be used when performing DNS
+     * resolution. The `servers` argument is an array of [RFC 5952](https://tools.ietf.org/html/rfc5952#section-6) formatted
+     * addresses. If the port is the IANA default DNS port (53) it can be omitted.
+     *
+     * ```js
+     * dns.setServers([
+     *   '4.4.4.4',
+     *   '[2001:4860:4860::8888]',
+     *   '4.4.4.4:1053',
+     *   '[2001:4860:4860::8888]:1053',
+     * ]);
+     * ```
+     *
+     * An error will be thrown if an invalid address is provided.
+     *
+     * The `dns.setServers()` method must not be called while a DNS query is in
+     * progress.
+     *
+     * The {@link setServers} method affects only {@link resolve},`dns.resolve*()` and {@link reverse} (and specifically _not_ {@link lookup}).
+     *
+     * This method works much like [resolve.conf](https://man7.org/linux/man-pages/man5/resolv.conf.5.html).
+     * That is, if attempting to resolve with the first server provided results in a`NOTFOUND` error, the `resolve()` method will _not_ attempt to resolve with
+     * subsequent servers provided. Fallback DNS servers will only be used if the
+     * earlier ones time out or result in some other error.
+     * @since v0.11.3
+     * @param servers array of `RFC 5952` formatted addresses
+     */
+    export function setServers(servers: ReadonlyArray<string>): void;
+    /**
+     * Returns an array of IP address strings, formatted according to [RFC 5952](https://tools.ietf.org/html/rfc5952#section-6),
+     * that are currently configured for DNS resolution. A string will include a port
+     * section if a custom port is used.
+     *
+     * ```js
+     * [
+     *   '4.4.4.4',
+     *   '2001:4860:4860::8888',
+     *   '4.4.4.4:1053',
+     *   '[2001:4860:4860::8888]:1053',
+     * ]
+     * ```
+     * @since v0.11.3
+     */
+    export function getServers(): string[];
+    /**
+     * Set the default value of `verbatim` in {@link lookup} and `dnsPromises.lookup()`. The value could be:
+     *
+     * * `ipv4first`: sets default `verbatim` `false`.
+     * * `verbatim`: sets default `verbatim` `true`.
+     *
+     * The default is `ipv4first` and {@link setDefaultResultOrder} have higher
+     * priority than `--dns-result-order`. When using `worker threads`,{@link setDefaultResultOrder} from the main thread won't affect the default
+     * dns orders in workers.
+     * @since v16.4.0, v14.18.0
+     * @param order must be `'ipv4first'` or `'verbatim'`.
+     */
+    export function setDefaultResultOrder(order: 'ipv4first' | 'verbatim'): void;
+    // Error codes
+    export const NODATA: string;
+    export const FORMERR: string;
+    export const SERVFAIL: string;
+    export const NOTFOUND: string;
+    export const NOTIMP: string;
+    export const REFUSED: string;
+    export const BADQUERY: string;
+    export const BADNAME: string;
+    export const BADFAMILY: string;
+    export const BADRESP: string;
+    export const CONNREFUSED: string;
+    export const TIMEOUT: string;
+    export const EOF: string;
+    export const FILE: string;
+    export const NOMEM: string;
+    export const DESTRUCTION: string;
+    export const BADSTR: string;
+    export const BADFLAGS: string;
+    export const NONAME: string;
+    export const BADHINTS: string;
+    export const NOTINITIALIZED: string;
+    export const LOADIPHLPAPI: string;
+    export const ADDRGETNETWORKPARAMS: string;
+    export const CANCELLED: string;
+    export interface ResolverOptions {
+        timeout?: number | undefined;
+        /**
+         * @default 4
+         */
+        tries?: number;
+    }
+    /**
+     * An independent resolver for DNS requests.
+     *
+     * Creating a new resolver uses the default server settings. Setting
+     * the servers used for a resolver using `resolver.setServers()` does not affect
+     * other resolvers:
+     *
+     * ```js
+     * const { Resolver } = require('dns');
+     * const resolver = new Resolver();
+     * resolver.setServers(['4.4.4.4']);
+     *
+     * // This request will use the server at 4.4.4.4, independent of global settings.
+     * resolver.resolve4('example.org', (err, addresses) => {
+     *   // ...
+     * });
+     * ```
+     *
+     * The following methods from the `dns` module are available:
+     *
+     * * `resolver.getServers()`
+     * * `resolver.resolve()`
+     * * `resolver.resolve4()`
+     * * `resolver.resolve6()`
+     * * `resolver.resolveAny()`
+     * * `resolver.resolveCaa()`
+     * * `resolver.resolveCname()`
+     * * `resolver.resolveMx()`
+     * * `resolver.resolveNaptr()`
+     * * `resolver.resolveNs()`
+     * * `resolver.resolvePtr()`
+     * * `resolver.resolveSoa()`
+     * * `resolver.resolveSrv()`
+     * * `resolver.resolveTxt()`
+     * * `resolver.reverse()`
+     * * `resolver.setServers()`
+     * @since v8.3.0
+     */
+    export class Resolver {
+        constructor(options?: ResolverOptions);
+        /**
+         * Cancel all outstanding DNS queries made by this resolver. The corresponding
+         * callbacks will be called with an error with code `ECANCELLED`.
+         * @since v8.3.0
+         */
+        cancel(): void;
+        getServers: typeof getServers;
+        resolve: typeof resolve;
+        resolve4: typeof resolve4;
+        resolve6: typeof resolve6;
+        resolveAny: typeof resolveAny;
+        resolveCname: typeof resolveCname;
+        resolveMx: typeof resolveMx;
+        resolveNaptr: typeof resolveNaptr;
+        resolveNs: typeof resolveNs;
+        resolvePtr: typeof resolvePtr;
+        resolveSoa: typeof resolveSoa;
+        resolveSrv: typeof resolveSrv;
+        resolveTxt: typeof resolveTxt;
+        reverse: typeof reverse;
+        /**
+         * The resolver instance will send its requests from the specified IP address.
+         * This allows programs to specify outbound interfaces when used on multi-homed
+         * systems.
+         *
+         * If a v4 or v6 address is not specified, it is set to the default, and the
+         * operating system will choose a local address automatically.
+         *
+         * The resolver will use the v4 local address when making requests to IPv4 DNS
+         * servers, and the v6 local address when making requests to IPv6 DNS servers.
+         * The `rrtype` of resolution requests has no impact on the local address used.
+         * @since v15.1.0, v14.17.0
+         * @param [ipv4='0.0.0.0'] A string representation of an IPv4 address.
+         * @param [ipv6='::0'] A string representation of an IPv6 address.
+         */
+        setLocalAddress(ipv4?: string, ipv6?: string): void;
+        setServers: typeof setServers;
+    }
+    export { dnsPromises as promises };
+}
+declare module 'node:dns' {
+    export * from 'dns';
+}
diff --git a/igv_component/node_modules/@types/node/dns/promises.d.ts b/igv_component/node_modules/@types/node/dns/promises.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..77cd807bd501b5a4d8687ed604989f6c2c252f2e
--- /dev/null
+++ b/igv_component/node_modules/@types/node/dns/promises.d.ts
@@ -0,0 +1,370 @@
+/**
+ * The `dns.promises` API provides an alternative set of asynchronous DNS methods
+ * that return `Promise` objects rather than using callbacks. The API is accessible
+ * via `require('dns').promises` or `require('dns/promises')`.
+ * @since v10.6.0
+ */
+declare module 'dns/promises' {
+    import {
+        LookupAddress,
+        LookupOneOptions,
+        LookupAllOptions,
+        LookupOptions,
+        AnyRecord,
+        CaaRecord,
+        MxRecord,
+        NaptrRecord,
+        SoaRecord,
+        SrvRecord,
+        ResolveWithTtlOptions,
+        RecordWithTtl,
+        ResolveOptions,
+        ResolverOptions,
+    } from 'node:dns';
+    /**
+     * Returns an array of IP address strings, formatted according to [RFC 5952](https://tools.ietf.org/html/rfc5952#section-6),
+     * that are currently configured for DNS resolution. A string will include a port
+     * section if a custom port is used.
+     *
+     * ```js
+     * [
+     *   '4.4.4.4',
+     *   '2001:4860:4860::8888',
+     *   '4.4.4.4:1053',
+     *   '[2001:4860:4860::8888]:1053',
+     * ]
+     * ```
+     * @since v10.6.0
+     */
+    function getServers(): string[];
+    /**
+     * Resolves a host name (e.g. `'nodejs.org'`) into the first found A (IPv4) or
+     * AAAA (IPv6) record. All `option` properties are optional. If `options` is an
+     * integer, then it must be `4` or `6` – if `options` is not provided, then IPv4
+     * and IPv6 addresses are both returned if found.
+     *
+     * With the `all` option set to `true`, the `Promise` is resolved with `addresses`being an array of objects with the properties `address` and `family`.
+     *
+     * On error, the `Promise` is rejected with an `Error` object, where `err.code`is the error code.
+     * Keep in mind that `err.code` will be set to `'ENOTFOUND'` not only when
+     * the host name does not exist but also when the lookup fails in other ways
+     * such as no available file descriptors.
+     *
+     * `dnsPromises.lookup()` does not necessarily have anything to do with the DNS
+     * protocol. The implementation uses an operating system facility that can
+     * associate names with addresses, and vice versa. This implementation can have
+     * subtle but important consequences on the behavior of any Node.js program. Please
+     * take some time to consult the `Implementation considerations section` before
+     * using `dnsPromises.lookup()`.
+     *
+     * Example usage:
+     *
+     * ```js
+     * const dns = require('dns');
+     * const dnsPromises = dns.promises;
+     * const options = {
+     *   family: 6,
+     *   hints: dns.ADDRCONFIG | dns.V4MAPPED,
+     * };
+     *
+     * dnsPromises.lookup('example.com', options).then((result) => {
+     *   console.log('address: %j family: IPv%s', result.address, result.family);
+     *   // address: "2606:2800:220:1:248:1893:25c8:1946" family: IPv6
+     * });
+     *
+     * // When options.all is true, the result will be an Array.
+     * options.all = true;
+     * dnsPromises.lookup('example.com', options).then((result) => {
+     *   console.log('addresses: %j', result);
+     *   // addresses: [{"address":"2606:2800:220:1:248:1893:25c8:1946","family":6}]
+     * });
+     * ```
+     * @since v10.6.0
+     */
+    function lookup(hostname: string, family: number): Promise<LookupAddress>;
+    function lookup(hostname: string, options: LookupOneOptions): Promise<LookupAddress>;
+    function lookup(hostname: string, options: LookupAllOptions): Promise<LookupAddress[]>;
+    function lookup(hostname: string, options: LookupOptions): Promise<LookupAddress | LookupAddress[]>;
+    function lookup(hostname: string): Promise<LookupAddress>;
+    /**
+     * Resolves the given `address` and `port` into a host name and service using
+     * the operating system's underlying `getnameinfo` implementation.
+     *
+     * If `address` is not a valid IP address, a `TypeError` will be thrown.
+     * The `port` will be coerced to a number. If it is not a legal port, a `TypeError`will be thrown.
+     *
+     * On error, the `Promise` is rejected with an `Error` object, where `err.code`is the error code.
+     *
+     * ```js
+     * const dnsPromises = require('dns').promises;
+     * dnsPromises.lookupService('127.0.0.1', 22).then((result) => {
+     *   console.log(result.hostname, result.service);
+     *   // Prints: localhost ssh
+     * });
+     * ```
+     * @since v10.6.0
+     */
+    function lookupService(
+        address: string,
+        port: number
+    ): Promise<{
+        hostname: string;
+        service: string;
+    }>;
+    /**
+     * Uses the DNS protocol to resolve a host name (e.g. `'nodejs.org'`) into an array
+     * of the resource records. When successful, the `Promise` is resolved with an
+     * array of resource records. The type and structure of individual results vary
+     * based on `rrtype`:
+     *
+     * <omitted>
+     *
+     * On error, the `Promise` is rejected with an `Error` object, where `err.code`is one of the `DNS error codes`.
+     * @since v10.6.0
+     * @param hostname Host name to resolve.
+     * @param [rrtype='A'] Resource record type.
+     */
+    function resolve(hostname: string): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'A'): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'AAAA'): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'ANY'): Promise<AnyRecord[]>;
+    function resolve(hostname: string, rrtype: 'CAA'): Promise<CaaRecord[]>;
+    function resolve(hostname: string, rrtype: 'CNAME'): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'MX'): Promise<MxRecord[]>;
+    function resolve(hostname: string, rrtype: 'NAPTR'): Promise<NaptrRecord[]>;
+    function resolve(hostname: string, rrtype: 'NS'): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'PTR'): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'SOA'): Promise<SoaRecord>;
+    function resolve(hostname: string, rrtype: 'SRV'): Promise<SrvRecord[]>;
+    function resolve(hostname: string, rrtype: 'TXT'): Promise<string[][]>;
+    function resolve(hostname: string, rrtype: string): Promise<string[] | MxRecord[] | NaptrRecord[] | SoaRecord | SrvRecord[] | string[][] | AnyRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve IPv4 addresses (`A` records) for the`hostname`. On success, the `Promise` is resolved with an array of IPv4
+     * addresses (e.g. `['74.125.79.104', '74.125.79.105', '74.125.79.106']`).
+     * @since v10.6.0
+     * @param hostname Host name to resolve.
+     */
+    function resolve4(hostname: string): Promise<string[]>;
+    function resolve4(hostname: string, options: ResolveWithTtlOptions): Promise<RecordWithTtl[]>;
+    function resolve4(hostname: string, options: ResolveOptions): Promise<string[] | RecordWithTtl[]>;
+    /**
+     * Uses the DNS protocol to resolve IPv6 addresses (`AAAA` records) for the`hostname`. On success, the `Promise` is resolved with an array of IPv6
+     * addresses.
+     * @since v10.6.0
+     * @param hostname Host name to resolve.
+     */
+    function resolve6(hostname: string): Promise<string[]>;
+    function resolve6(hostname: string, options: ResolveWithTtlOptions): Promise<RecordWithTtl[]>;
+    function resolve6(hostname: string, options: ResolveOptions): Promise<string[] | RecordWithTtl[]>;
+    /**
+     * Uses the DNS protocol to resolve all records (also known as `ANY` or `*` query).
+     * On success, the `Promise` is resolved with an array containing various types of
+     * records. Each object has a property `type` that indicates the type of the
+     * current record. And depending on the `type`, additional properties will be
+     * present on the object:
+     *
+     * <omitted>
+     *
+     * Here is an example of the result object:
+     *
+     * ```js
+     * [ { type: 'A', address: '127.0.0.1', ttl: 299 },
+     *   { type: 'CNAME', value: 'example.com' },
+     *   { type: 'MX', exchange: 'alt4.aspmx.l.example.com', priority: 50 },
+     *   { type: 'NS', value: 'ns1.example.com' },
+     *   { type: 'TXT', entries: [ 'v=spf1 include:_spf.example.com ~all' ] },
+     *   { type: 'SOA',
+     *     nsname: 'ns1.example.com',
+     *     hostmaster: 'admin.example.com',
+     *     serial: 156696742,
+     *     refresh: 900,
+     *     retry: 900,
+     *     expire: 1800,
+     *     minttl: 60 } ]
+     * ```
+     * @since v10.6.0
+     */
+    function resolveAny(hostname: string): Promise<AnyRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve `CAA` records for the `hostname`. On success,
+     * the `Promise` is resolved with an array of objects containing available
+     * certification authority authorization records available for the `hostname`(e.g. `[{critical: 0, iodef: 'mailto:pki@example.com'},{critical: 128, issue: 'pki.example.com'}]`).
+     * @since v15.0.0, v14.17.0
+     */
+    function resolveCaa(hostname: string): Promise<CaaRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve `CNAME` records for the `hostname`. On success,
+     * the `Promise` is resolved with an array of canonical name records available for
+     * the `hostname` (e.g. `['bar.example.com']`).
+     * @since v10.6.0
+     */
+    function resolveCname(hostname: string): Promise<string[]>;
+    /**
+     * Uses the DNS protocol to resolve mail exchange records (`MX` records) for the`hostname`. On success, the `Promise` is resolved with an array of objects
+     * containing both a `priority` and `exchange` property (e.g.`[{priority: 10, exchange: 'mx.example.com'}, ...]`).
+     * @since v10.6.0
+     */
+    function resolveMx(hostname: string): Promise<MxRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve regular expression based records (`NAPTR`records) for the `hostname`. On success, the `Promise` is resolved with an array
+     * of objects with the following properties:
+     *
+     * * `flags`
+     * * `service`
+     * * `regexp`
+     * * `replacement`
+     * * `order`
+     * * `preference`
+     *
+     * ```js
+     * {
+     *   flags: 's',
+     *   service: 'SIP+D2U',
+     *   regexp: '',
+     *   replacement: '_sip._udp.example.com',
+     *   order: 30,
+     *   preference: 100
+     * }
+     * ```
+     * @since v10.6.0
+     */
+    function resolveNaptr(hostname: string): Promise<NaptrRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve name server records (`NS` records) for the`hostname`. On success, the `Promise` is resolved with an array of name server
+     * records available for `hostname` (e.g.`['ns1.example.com', 'ns2.example.com']`).
+     * @since v10.6.0
+     */
+    function resolveNs(hostname: string): Promise<string[]>;
+    /**
+     * Uses the DNS protocol to resolve pointer records (`PTR` records) for the`hostname`. On success, the `Promise` is resolved with an array of strings
+     * containing the reply records.
+     * @since v10.6.0
+     */
+    function resolvePtr(hostname: string): Promise<string[]>;
+    /**
+     * Uses the DNS protocol to resolve a start of authority record (`SOA` record) for
+     * the `hostname`. On success, the `Promise` is resolved with an object with the
+     * following properties:
+     *
+     * * `nsname`
+     * * `hostmaster`
+     * * `serial`
+     * * `refresh`
+     * * `retry`
+     * * `expire`
+     * * `minttl`
+     *
+     * ```js
+     * {
+     *   nsname: 'ns.example.com',
+     *   hostmaster: 'root.example.com',
+     *   serial: 2013101809,
+     *   refresh: 10000,
+     *   retry: 2400,
+     *   expire: 604800,
+     *   minttl: 3600
+     * }
+     * ```
+     * @since v10.6.0
+     */
+    function resolveSoa(hostname: string): Promise<SoaRecord>;
+    /**
+     * Uses the DNS protocol to resolve service records (`SRV` records) for the`hostname`. On success, the `Promise` is resolved with an array of objects with
+     * the following properties:
+     *
+     * * `priority`
+     * * `weight`
+     * * `port`
+     * * `name`
+     *
+     * ```js
+     * {
+     *   priority: 10,
+     *   weight: 5,
+     *   port: 21223,
+     *   name: 'service.example.com'
+     * }
+     * ```
+     * @since v10.6.0
+     */
+    function resolveSrv(hostname: string): Promise<SrvRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve text queries (`TXT` records) for the`hostname`. On success, the `Promise` is resolved with a two-dimensional array
+     * of the text records available for `hostname` (e.g.`[ ['v=spf1 ip4:0.0.0.0 ', '~all' ] ]`). Each sub-array contains TXT chunks of
+     * one record. Depending on the use case, these could be either joined together or
+     * treated separately.
+     * @since v10.6.0
+     */
+    function resolveTxt(hostname: string): Promise<string[][]>;
+    /**
+     * Performs a reverse DNS query that resolves an IPv4 or IPv6 address to an
+     * array of host names.
+     *
+     * On error, the `Promise` is rejected with an `Error` object, where `err.code`is one of the `DNS error codes`.
+     * @since v10.6.0
+     */
+    function reverse(ip: string): Promise<string[]>;
+    /**
+     * Sets the IP address and port of servers to be used when performing DNS
+     * resolution. The `servers` argument is an array of [RFC 5952](https://tools.ietf.org/html/rfc5952#section-6) formatted
+     * addresses. If the port is the IANA default DNS port (53) it can be omitted.
+     *
+     * ```js
+     * dnsPromises.setServers([
+     *   '4.4.4.4',
+     *   '[2001:4860:4860::8888]',
+     *   '4.4.4.4:1053',
+     *   '[2001:4860:4860::8888]:1053',
+     * ]);
+     * ```
+     *
+     * An error will be thrown if an invalid address is provided.
+     *
+     * The `dnsPromises.setServers()` method must not be called while a DNS query is in
+     * progress.
+     *
+     * This method works much like [resolve.conf](https://man7.org/linux/man-pages/man5/resolv.conf.5.html).
+     * That is, if attempting to resolve with the first server provided results in a`NOTFOUND` error, the `resolve()` method will _not_ attempt to resolve with
+     * subsequent servers provided. Fallback DNS servers will only be used if the
+     * earlier ones time out or result in some other error.
+     * @since v10.6.0
+     * @param servers array of `RFC 5952` formatted addresses
+     */
+    function setServers(servers: ReadonlyArray<string>): void;
+    /**
+     * Set the default value of `verbatim` in `dns.lookup()` and `dnsPromises.lookup()`. The value could be:
+     *
+     * * `ipv4first`: sets default `verbatim` `false`.
+     * * `verbatim`: sets default `verbatim` `true`.
+     *
+     * The default is `ipv4first` and `dnsPromises.setDefaultResultOrder()` have
+     * higher priority than `--dns-result-order`. When using `worker threads`,`dnsPromises.setDefaultResultOrder()` from the main thread won't affect the
+     * default dns orders in workers.
+     * @since v16.4.0, v14.18.0
+     * @param order must be `'ipv4first'` or `'verbatim'`.
+     */
+    function setDefaultResultOrder(order: 'ipv4first' | 'verbatim'): void;
+    class Resolver {
+        constructor(options?: ResolverOptions);
+        cancel(): void;
+        getServers: typeof getServers;
+        resolve: typeof resolve;
+        resolve4: typeof resolve4;
+        resolve6: typeof resolve6;
+        resolveAny: typeof resolveAny;
+        resolveCname: typeof resolveCname;
+        resolveMx: typeof resolveMx;
+        resolveNaptr: typeof resolveNaptr;
+        resolveNs: typeof resolveNs;
+        resolvePtr: typeof resolvePtr;
+        resolveSoa: typeof resolveSoa;
+        resolveSrv: typeof resolveSrv;
+        resolveTxt: typeof resolveTxt;
+        reverse: typeof reverse;
+        setLocalAddress(ipv4?: string, ipv6?: string): void;
+        setServers: typeof setServers;
+    }
+}
+declare module 'node:dns/promises' {
+    export * from 'dns/promises';
+}
diff --git a/igv_component/node_modules/@types/node/domain.d.ts b/igv_component/node_modules/@types/node/domain.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..fafe68a5d3fc413012b616cc05bdba2f661ea1af
--- /dev/null
+++ b/igv_component/node_modules/@types/node/domain.d.ts
@@ -0,0 +1,170 @@
+/**
+ * **This module is pending deprecation.** Once a replacement API has been
+ * finalized, this module will be fully deprecated. Most developers should
+ * **not** have cause to use this module. Users who absolutely must have
+ * the functionality that domains provide may rely on it for the time being
+ * but should expect to have to migrate to a different solution
+ * in the future.
+ *
+ * Domains provide a way to handle multiple different IO operations as a
+ * single group. If any of the event emitters or callbacks registered to a
+ * domain emit an `'error'` event, or throw an error, then the domain object
+ * will be notified, rather than losing the context of the error in the`process.on('uncaughtException')` handler, or causing the program to
+ * exit immediately with an error code.
+ * @deprecated Since v1.4.2 - Deprecated
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/domain.js)
+ */
+declare module 'domain' {
+    import EventEmitter = require('node:events');
+    /**
+     * The `Domain` class encapsulates the functionality of routing errors and
+     * uncaught exceptions to the active `Domain` object.
+     *
+     * To handle the errors that it catches, listen to its `'error'` event.
+     */
+    class Domain extends EventEmitter {
+        /**
+         * An array of timers and event emitters that have been explicitly added
+         * to the domain.
+         */
+        members: Array<EventEmitter | NodeJS.Timer>;
+        /**
+         * The `enter()` method is plumbing used by the `run()`, `bind()`, and`intercept()` methods to set the active domain. It sets `domain.active` and`process.domain` to the domain, and implicitly
+         * pushes the domain onto the domain
+         * stack managed by the domain module (see {@link exit} for details on the
+         * domain stack). The call to `enter()` delimits the beginning of a chain of
+         * asynchronous calls and I/O operations bound to a domain.
+         *
+         * Calling `enter()` changes only the active domain, and does not alter the domain
+         * itself. `enter()` and `exit()` can be called an arbitrary number of times on a
+         * single domain.
+         */
+        enter(): void;
+        /**
+         * The `exit()` method exits the current domain, popping it off the domain stack.
+         * Any time execution is going to switch to the context of a different chain of
+         * asynchronous calls, it's important to ensure that the current domain is exited.
+         * The call to `exit()` delimits either the end of or an interruption to the chain
+         * of asynchronous calls and I/O operations bound to a domain.
+         *
+         * If there are multiple, nested domains bound to the current execution context,`exit()` will exit any domains nested within this domain.
+         *
+         * Calling `exit()` changes only the active domain, and does not alter the domain
+         * itself. `enter()` and `exit()` can be called an arbitrary number of times on a
+         * single domain.
+         */
+        exit(): void;
+        /**
+         * Run the supplied function in the context of the domain, implicitly
+         * binding all event emitters, timers, and lowlevel requests that are
+         * created in that context. Optionally, arguments can be passed to
+         * the function.
+         *
+         * This is the most basic way to use a domain.
+         *
+         * ```js
+         * const domain = require('domain');
+         * const fs = require('fs');
+         * const d = domain.create();
+         * d.on('error', (er) => {
+         *   console.error('Caught error!', er);
+         * });
+         * d.run(() => {
+         *   process.nextTick(() => {
+         *     setTimeout(() => { // Simulating some various async stuff
+         *       fs.open('non-existent file', 'r', (er, fd) => {
+         *         if (er) throw er;
+         *         // proceed...
+         *       });
+         *     }, 100);
+         *   });
+         * });
+         * ```
+         *
+         * In this example, the `d.on('error')` handler will be triggered, rather
+         * than crashing the program.
+         */
+        run<T>(fn: (...args: any[]) => T, ...args: any[]): T;
+        /**
+         * Explicitly adds an emitter to the domain. If any event handlers called by
+         * the emitter throw an error, or if the emitter emits an `'error'` event, it
+         * will be routed to the domain's `'error'` event, just like with implicit
+         * binding.
+         *
+         * This also works with timers that are returned from `setInterval()` and `setTimeout()`. If their callback function throws, it will be caught by
+         * the domain `'error'` handler.
+         *
+         * If the Timer or `EventEmitter` was already bound to a domain, it is removed
+         * from that one, and bound to this one instead.
+         * @param emitter emitter or timer to be added to the domain
+         */
+        add(emitter: EventEmitter | NodeJS.Timer): void;
+        /**
+         * The opposite of {@link add}. Removes domain handling from the
+         * specified emitter.
+         * @param emitter emitter or timer to be removed from the domain
+         */
+        remove(emitter: EventEmitter | NodeJS.Timer): void;
+        /**
+         * The returned function will be a wrapper around the supplied callback
+         * function. When the returned function is called, any errors that are
+         * thrown will be routed to the domain's `'error'` event.
+         *
+         * ```js
+         * const d = domain.create();
+         *
+         * function readSomeFile(filename, cb) {
+         *   fs.readFile(filename, 'utf8', d.bind((er, data) => {
+         *     // If this throws, it will also be passed to the domain.
+         *     return cb(er, data ? JSON.parse(data) : null);
+         *   }));
+         * }
+         *
+         * d.on('error', (er) => {
+         *   // An error occurred somewhere. If we throw it now, it will crash the program
+         *   // with the normal line number and stack message.
+         * });
+         * ```
+         * @param callback The callback function
+         * @return The bound function
+         */
+        bind<T extends Function>(callback: T): T;
+        /**
+         * This method is almost identical to {@link bind}. However, in
+         * addition to catching thrown errors, it will also intercept `Error` objects sent as the first argument to the function.
+         *
+         * In this way, the common `if (err) return callback(err);` pattern can be replaced
+         * with a single error handler in a single place.
+         *
+         * ```js
+         * const d = domain.create();
+         *
+         * function readSomeFile(filename, cb) {
+         *   fs.readFile(filename, 'utf8', d.intercept((data) => {
+         *     // Note, the first argument is never passed to the
+         *     // callback since it is assumed to be the 'Error' argument
+         *     // and thus intercepted by the domain.
+         *
+         *     // If this throws, it will also be passed to the domain
+         *     // so the error-handling logic can be moved to the 'error'
+         *     // event on the domain instead of being repeated throughout
+         *     // the program.
+         *     return cb(null, JSON.parse(data));
+         *   }));
+         * }
+         *
+         * d.on('error', (er) => {
+         *   // An error occurred somewhere. If we throw it now, it will crash the program
+         *   // with the normal line number and stack message.
+         * });
+         * ```
+         * @param callback The callback function
+         * @return The intercepted function
+         */
+        intercept<T extends Function>(callback: T): T;
+    }
+    function create(): Domain;
+}
+declare module 'node:domain' {
+    export * from 'domain';
+}
diff --git a/igv_component/node_modules/@types/node/events.d.ts b/igv_component/node_modules/@types/node/events.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b8283ac95a1f2bc0a27a8839c4108cdb4cea490a
--- /dev/null
+++ b/igv_component/node_modules/@types/node/events.d.ts
@@ -0,0 +1,641 @@
+/**
+ * Much of the Node.js core API is built around an idiomatic asynchronous
+ * event-driven architecture in which certain kinds of objects (called "emitters")
+ * emit named events that cause `Function` objects ("listeners") to be called.
+ *
+ * For instance: a `net.Server` object emits an event each time a peer
+ * connects to it; a `fs.ReadStream` emits an event when the file is opened;
+ * a `stream` emits an event whenever data is available to be read.
+ *
+ * All objects that emit events are instances of the `EventEmitter` class. These
+ * objects expose an `eventEmitter.on()` function that allows one or more
+ * functions to be attached to named events emitted by the object. Typically,
+ * event names are camel-cased strings but any valid JavaScript property key
+ * can be used.
+ *
+ * When the `EventEmitter` object emits an event, all of the functions attached
+ * to that specific event are called _synchronously_. Any values returned by the
+ * called listeners are _ignored_ and discarded.
+ *
+ * The following example shows a simple `EventEmitter` instance with a single
+ * listener. The `eventEmitter.on()` method is used to register listeners, while
+ * the `eventEmitter.emit()` method is used to trigger the event.
+ *
+ * ```js
+ * const EventEmitter = require('events');
+ *
+ * class MyEmitter extends EventEmitter {}
+ *
+ * const myEmitter = new MyEmitter();
+ * myEmitter.on('event', () => {
+ *   console.log('an event occurred!');
+ * });
+ * myEmitter.emit('event');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/events.js)
+ */
+declare module 'events' {
+    interface EventEmitterOptions {
+        /**
+         * Enables automatic capturing of promise rejection.
+         */
+        captureRejections?: boolean | undefined;
+    }
+    interface NodeEventTarget {
+        once(eventName: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    interface DOMEventTarget {
+        addEventListener(
+            eventName: string,
+            listener: (...args: any[]) => void,
+            opts?: {
+                once: boolean;
+            }
+        ): any;
+    }
+    interface StaticEventEmitterOptions {
+        signal?: AbortSignal | undefined;
+    }
+    interface EventEmitter extends NodeJS.EventEmitter {}
+    /**
+     * The `EventEmitter` class is defined and exposed by the `events` module:
+     *
+     * ```js
+     * const EventEmitter = require('events');
+     * ```
+     *
+     * All `EventEmitter`s emit the event `'newListener'` when new listeners are
+     * added and `'removeListener'` when existing listeners are removed.
+     *
+     * It supports the following option:
+     * @since v0.1.26
+     */
+    class EventEmitter {
+        constructor(options?: EventEmitterOptions);
+        /**
+         * Creates a `Promise` that is fulfilled when the `EventEmitter` emits the given
+         * event or that is rejected if the `EventEmitter` emits `'error'` while waiting.
+         * The `Promise` will resolve with an array of all the arguments emitted to the
+         * given event.
+         *
+         * This method is intentionally generic and works with the web platform [EventTarget](https://dom.spec.whatwg.org/#interface-eventtarget) interface, which has no special`'error'` event
+         * semantics and does not listen to the `'error'` event.
+         *
+         * ```js
+         * const { once, EventEmitter } = require('events');
+         *
+         * async function run() {
+         *   const ee = new EventEmitter();
+         *
+         *   process.nextTick(() => {
+         *     ee.emit('myevent', 42);
+         *   });
+         *
+         *   const [value] = await once(ee, 'myevent');
+         *   console.log(value);
+         *
+         *   const err = new Error('kaboom');
+         *   process.nextTick(() => {
+         *     ee.emit('error', err);
+         *   });
+         *
+         *   try {
+         *     await once(ee, 'myevent');
+         *   } catch (err) {
+         *     console.log('error happened', err);
+         *   }
+         * }
+         *
+         * run();
+         * ```
+         *
+         * The special handling of the `'error'` event is only used when `events.once()`is used to wait for another event. If `events.once()` is used to wait for the
+         * '`error'` event itself, then it is treated as any other kind of event without
+         * special handling:
+         *
+         * ```js
+         * const { EventEmitter, once } = require('events');
+         *
+         * const ee = new EventEmitter();
+         *
+         * once(ee, 'error')
+         *   .then(([err]) => console.log('ok', err.message))
+         *   .catch((err) => console.log('error', err.message));
+         *
+         * ee.emit('error', new Error('boom'));
+         *
+         * // Prints: ok boom
+         * ```
+         *
+         * An `AbortSignal` can be used to cancel waiting for the event:
+         *
+         * ```js
+         * const { EventEmitter, once } = require('events');
+         *
+         * const ee = new EventEmitter();
+         * const ac = new AbortController();
+         *
+         * async function foo(emitter, event, signal) {
+         *   try {
+         *     await once(emitter, event, { signal });
+         *     console.log('event emitted!');
+         *   } catch (error) {
+         *     if (error.name === 'AbortError') {
+         *       console.error('Waiting for the event was canceled!');
+         *     } else {
+         *       console.error('There was an error', error.message);
+         *     }
+         *   }
+         * }
+         *
+         * foo(ee, 'foo', ac.signal);
+         * ac.abort(); // Abort waiting for the event
+         * ee.emit('foo'); // Prints: Waiting for the event was canceled!
+         * ```
+         * @since v11.13.0, v10.16.0
+         */
+        static once(emitter: NodeEventTarget, eventName: string | symbol, options?: StaticEventEmitterOptions): Promise<any[]>;
+        static once(emitter: DOMEventTarget, eventName: string, options?: StaticEventEmitterOptions): Promise<any[]>;
+        /**
+         * ```js
+         * const { on, EventEmitter } = require('events');
+         *
+         * (async () => {
+         *   const ee = new EventEmitter();
+         *
+         *   // Emit later on
+         *   process.nextTick(() => {
+         *     ee.emit('foo', 'bar');
+         *     ee.emit('foo', 42);
+         *   });
+         *
+         *   for await (const event of on(ee, 'foo')) {
+         *     // The execution of this inner block is synchronous and it
+         *     // processes one event at a time (even with await). Do not use
+         *     // if concurrent execution is required.
+         *     console.log(event); // prints ['bar'] [42]
+         *   }
+         *   // Unreachable here
+         * })();
+         * ```
+         *
+         * Returns an `AsyncIterator` that iterates `eventName` events. It will throw
+         * if the `EventEmitter` emits `'error'`. It removes all listeners when
+         * exiting the loop. The `value` returned by each iteration is an array
+         * composed of the emitted event arguments.
+         *
+         * An `AbortSignal` can be used to cancel waiting on events:
+         *
+         * ```js
+         * const { on, EventEmitter } = require('events');
+         * const ac = new AbortController();
+         *
+         * (async () => {
+         *   const ee = new EventEmitter();
+         *
+         *   // Emit later on
+         *   process.nextTick(() => {
+         *     ee.emit('foo', 'bar');
+         *     ee.emit('foo', 42);
+         *   });
+         *
+         *   for await (const event of on(ee, 'foo', { signal: ac.signal })) {
+         *     // The execution of this inner block is synchronous and it
+         *     // processes one event at a time (even with await). Do not use
+         *     // if concurrent execution is required.
+         *     console.log(event); // prints ['bar'] [42]
+         *   }
+         *   // Unreachable here
+         * })();
+         *
+         * process.nextTick(() => ac.abort());
+         * ```
+         * @since v13.6.0, v12.16.0
+         * @param eventName The name of the event being listened for
+         * @return that iterates `eventName` events emitted by the `emitter`
+         */
+        static on(emitter: NodeJS.EventEmitter, eventName: string, options?: StaticEventEmitterOptions): AsyncIterableIterator<any>;
+        /**
+         * A class method that returns the number of listeners for the given `eventName`registered on the given `emitter`.
+         *
+         * ```js
+         * const { EventEmitter, listenerCount } = require('events');
+         * const myEmitter = new EventEmitter();
+         * myEmitter.on('event', () => {});
+         * myEmitter.on('event', () => {});
+         * console.log(listenerCount(myEmitter, 'event'));
+         * // Prints: 2
+         * ```
+         * @since v0.9.12
+         * @deprecated Since v3.2.0 - Use `listenerCount` instead.
+         * @param emitter The emitter to query
+         * @param eventName The event name
+         */
+        static listenerCount(emitter: NodeJS.EventEmitter, eventName: string | symbol): number;
+        /**
+         * Returns a copy of the array of listeners for the event named `eventName`.
+         *
+         * For `EventEmitter`s this behaves exactly the same as calling `.listeners` on
+         * the emitter.
+         *
+         * For `EventTarget`s this is the only way to get the event listeners for the
+         * event target. This is useful for debugging and diagnostic purposes.
+         *
+         * ```js
+         * const { getEventListeners, EventEmitter } = require('events');
+         *
+         * {
+         *   const ee = new EventEmitter();
+         *   const listener = () => console.log('Events are fun');
+         *   ee.on('foo', listener);
+         *   getEventListeners(ee, 'foo'); // [listener]
+         * }
+         * {
+         *   const et = new EventTarget();
+         *   const listener = () => console.log('Events are fun');
+         *   et.addEventListener('foo', listener);
+         *   getEventListeners(et, 'foo'); // [listener]
+         * }
+         * ```
+         * @since v15.2.0, v14.17.0
+         */
+        static getEventListeners(emitter: DOMEventTarget | NodeJS.EventEmitter, name: string | symbol): Function[];
+        /**
+         * ```js
+         * const {
+         *   setMaxListeners,
+         *   EventEmitter
+         * } = require('events');
+         *
+         * const target = new EventTarget();
+         * const emitter = new EventEmitter();
+         *
+         * setMaxListeners(5, target, emitter);
+         * ```
+         * @since v15.4.0
+         * @param n A non-negative number. The maximum number of listeners per `EventTarget` event.
+         * @param eventsTargets Zero or more {EventTarget} or {EventEmitter} instances. If none are specified, `n` is set as the default max for all newly created {EventTarget} and {EventEmitter}
+         * objects.
+         */
+        static setMaxListeners(n?: number, ...eventTargets: Array<DOMEventTarget | NodeJS.EventEmitter>): void;
+        /**
+         * This symbol shall be used to install a listener for only monitoring `'error'`
+         * events. Listeners installed using this symbol are called before the regular
+         * `'error'` listeners are called.
+         *
+         * Installing a listener using this symbol does not change the behavior once an
+         * `'error'` event is emitted, therefore the process will still crash if no
+         * regular `'error'` listener is installed.
+         */
+        static readonly errorMonitor: unique symbol;
+        static readonly captureRejectionSymbol: unique symbol;
+        /**
+         * Sets or gets the default captureRejection value for all emitters.
+         */
+        // TODO: These should be described using static getter/setter pairs:
+        static captureRejections: boolean;
+        static defaultMaxListeners: number;
+    }
+    import internal = require('node:events');
+    namespace EventEmitter {
+        // Should just be `export { EventEmitter }`, but that doesn't work in TypeScript 3.4
+        export { internal as EventEmitter };
+        export interface Abortable {
+            /**
+             * When provided the corresponding `AbortController` can be used to cancel an asynchronous action.
+             */
+            signal?: AbortSignal | undefined;
+        }
+    }
+    global {
+        namespace NodeJS {
+            interface EventEmitter {
+                /**
+                 * Alias for `emitter.on(eventName, listener)`.
+                 * @since v0.1.26
+                 */
+                addListener(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Adds the `listener` function to the end of the listeners array for the
+                 * event named `eventName`. No checks are made to see if the `listener` has
+                 * already been added. Multiple calls passing the same combination of `eventName`and `listener` will result in the `listener` being added, and called, multiple
+                 * times.
+                 *
+                 * ```js
+                 * server.on('connection', (stream) => {
+                 *   console.log('someone connected!');
+                 * });
+                 * ```
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 *
+                 * By default, event listeners are invoked in the order they are added. The`emitter.prependListener()` method can be used as an alternative to add the
+                 * event listener to the beginning of the listeners array.
+                 *
+                 * ```js
+                 * const myEE = new EventEmitter();
+                 * myEE.on('foo', () => console.log('a'));
+                 * myEE.prependListener('foo', () => console.log('b'));
+                 * myEE.emit('foo');
+                 * // Prints:
+                 * //   b
+                 * //   a
+                 * ```
+                 * @since v0.1.101
+                 * @param eventName The name of the event.
+                 * @param listener The callback function
+                 */
+                on(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Adds a **one-time**`listener` function for the event named `eventName`. The
+                 * next time `eventName` is triggered, this listener is removed and then invoked.
+                 *
+                 * ```js
+                 * server.once('connection', (stream) => {
+                 *   console.log('Ah, we have our first user!');
+                 * });
+                 * ```
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 *
+                 * By default, event listeners are invoked in the order they are added. The`emitter.prependOnceListener()` method can be used as an alternative to add the
+                 * event listener to the beginning of the listeners array.
+                 *
+                 * ```js
+                 * const myEE = new EventEmitter();
+                 * myEE.once('foo', () => console.log('a'));
+                 * myEE.prependOnceListener('foo', () => console.log('b'));
+                 * myEE.emit('foo');
+                 * // Prints:
+                 * //   b
+                 * //   a
+                 * ```
+                 * @since v0.3.0
+                 * @param eventName The name of the event.
+                 * @param listener The callback function
+                 */
+                once(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Removes the specified `listener` from the listener array for the event named`eventName`.
+                 *
+                 * ```js
+                 * const callback = (stream) => {
+                 *   console.log('someone connected!');
+                 * };
+                 * server.on('connection', callback);
+                 * // ...
+                 * server.removeListener('connection', callback);
+                 * ```
+                 *
+                 * `removeListener()` will remove, at most, one instance of a listener from the
+                 * listener array. If any single listener has been added multiple times to the
+                 * listener array for the specified `eventName`, then `removeListener()` must be
+                 * called multiple times to remove each instance.
+                 *
+                 * Once an event is emitted, all listeners attached to it at the
+                 * time of emitting are called in order. This implies that any`removeListener()` or `removeAllListeners()` calls _after_ emitting and _before_ the last listener finishes execution
+                 * will not remove them from`emit()` in progress. Subsequent events behave as expected.
+                 *
+                 * ```js
+                 * const myEmitter = new MyEmitter();
+                 *
+                 * const callbackA = () => {
+                 *   console.log('A');
+                 *   myEmitter.removeListener('event', callbackB);
+                 * };
+                 *
+                 * const callbackB = () => {
+                 *   console.log('B');
+                 * };
+                 *
+                 * myEmitter.on('event', callbackA);
+                 *
+                 * myEmitter.on('event', callbackB);
+                 *
+                 * // callbackA removes listener callbackB but it will still be called.
+                 * // Internal listener array at time of emit [callbackA, callbackB]
+                 * myEmitter.emit('event');
+                 * // Prints:
+                 * //   A
+                 * //   B
+                 *
+                 * // callbackB is now removed.
+                 * // Internal listener array [callbackA]
+                 * myEmitter.emit('event');
+                 * // Prints:
+                 * //   A
+                 * ```
+                 *
+                 * Because listeners are managed using an internal array, calling this will
+                 * change the position indices of any listener registered _after_ the listener
+                 * being removed. This will not impact the order in which listeners are called,
+                 * but it means that any copies of the listener array as returned by
+                 * the `emitter.listeners()` method will need to be recreated.
+                 *
+                 * When a single function has been added as a handler multiple times for a single
+                 * event (as in the example below), `removeListener()` will remove the most
+                 * recently added instance. In the example the `once('ping')`listener is removed:
+                 *
+                 * ```js
+                 * const ee = new EventEmitter();
+                 *
+                 * function pong() {
+                 *   console.log('pong');
+                 * }
+                 *
+                 * ee.on('ping', pong);
+                 * ee.once('ping', pong);
+                 * ee.removeListener('ping', pong);
+                 *
+                 * ee.emit('ping');
+                 * ee.emit('ping');
+                 * ```
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 * @since v0.1.26
+                 */
+                removeListener(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Alias for `emitter.removeListener()`.
+                 * @since v10.0.0
+                 */
+                off(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Removes all listeners, or those of the specified `eventName`.
+                 *
+                 * It is bad practice to remove listeners added elsewhere in the code,
+                 * particularly when the `EventEmitter` instance was created by some other
+                 * component or module (e.g. sockets or file streams).
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 * @since v0.1.26
+                 */
+                removeAllListeners(event?: string | symbol): this;
+                /**
+                 * By default `EventEmitter`s will print a warning if more than `10` listeners are
+                 * added for a particular event. This is a useful default that helps finding
+                 * memory leaks. The `emitter.setMaxListeners()` method allows the limit to be
+                 * modified for this specific `EventEmitter` instance. The value can be set to`Infinity` (or `0`) to indicate an unlimited number of listeners.
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 * @since v0.3.5
+                 */
+                setMaxListeners(n: number): this;
+                /**
+                 * Returns the current max listener value for the `EventEmitter` which is either
+                 * set by `emitter.setMaxListeners(n)` or defaults to {@link defaultMaxListeners}.
+                 * @since v1.0.0
+                 */
+                getMaxListeners(): number;
+                /**
+                 * Returns a copy of the array of listeners for the event named `eventName`.
+                 *
+                 * ```js
+                 * server.on('connection', (stream) => {
+                 *   console.log('someone connected!');
+                 * });
+                 * console.log(util.inspect(server.listeners('connection')));
+                 * // Prints: [ [Function] ]
+                 * ```
+                 * @since v0.1.26
+                 */
+                listeners(eventName: string | symbol): Function[];
+                /**
+                 * Returns a copy of the array of listeners for the event named `eventName`,
+                 * including any wrappers (such as those created by `.once()`).
+                 *
+                 * ```js
+                 * const emitter = new EventEmitter();
+                 * emitter.once('log', () => console.log('log once'));
+                 *
+                 * // Returns a new Array with a function `onceWrapper` which has a property
+                 * // `listener` which contains the original listener bound above
+                 * const listeners = emitter.rawListeners('log');
+                 * const logFnWrapper = listeners[0];
+                 *
+                 * // Logs "log once" to the console and does not unbind the `once` event
+                 * logFnWrapper.listener();
+                 *
+                 * // Logs "log once" to the console and removes the listener
+                 * logFnWrapper();
+                 *
+                 * emitter.on('log', () => console.log('log persistently'));
+                 * // Will return a new Array with a single function bound by `.on()` above
+                 * const newListeners = emitter.rawListeners('log');
+                 *
+                 * // Logs "log persistently" twice
+                 * newListeners[0]();
+                 * emitter.emit('log');
+                 * ```
+                 * @since v9.4.0
+                 */
+                rawListeners(eventName: string | symbol): Function[];
+                /**
+                 * Synchronously calls each of the listeners registered for the event named`eventName`, in the order they were registered, passing the supplied arguments
+                 * to each.
+                 *
+                 * Returns `true` if the event had listeners, `false` otherwise.
+                 *
+                 * ```js
+                 * const EventEmitter = require('events');
+                 * const myEmitter = new EventEmitter();
+                 *
+                 * // First listener
+                 * myEmitter.on('event', function firstListener() {
+                 *   console.log('Helloooo! first listener');
+                 * });
+                 * // Second listener
+                 * myEmitter.on('event', function secondListener(arg1, arg2) {
+                 *   console.log(`event with parameters ${arg1}, ${arg2} in second listener`);
+                 * });
+                 * // Third listener
+                 * myEmitter.on('event', function thirdListener(...args) {
+                 *   const parameters = args.join(', ');
+                 *   console.log(`event with parameters ${parameters} in third listener`);
+                 * });
+                 *
+                 * console.log(myEmitter.listeners('event'));
+                 *
+                 * myEmitter.emit('event', 1, 2, 3, 4, 5);
+                 *
+                 * // Prints:
+                 * // [
+                 * //   [Function: firstListener],
+                 * //   [Function: secondListener],
+                 * //   [Function: thirdListener]
+                 * // ]
+                 * // Helloooo! first listener
+                 * // event with parameters 1, 2 in second listener
+                 * // event with parameters 1, 2, 3, 4, 5 in third listener
+                 * ```
+                 * @since v0.1.26
+                 */
+                emit(eventName: string | symbol, ...args: any[]): boolean;
+                /**
+                 * Returns the number of listeners listening to the event named `eventName`.
+                 * @since v3.2.0
+                 * @param eventName The name of the event being listened for
+                 */
+                listenerCount(eventName: string | symbol): number;
+                /**
+                 * Adds the `listener` function to the _beginning_ of the listeners array for the
+                 * event named `eventName`. No checks are made to see if the `listener` has
+                 * already been added. Multiple calls passing the same combination of `eventName`and `listener` will result in the `listener` being added, and called, multiple
+                 * times.
+                 *
+                 * ```js
+                 * server.prependListener('connection', (stream) => {
+                 *   console.log('someone connected!');
+                 * });
+                 * ```
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 * @since v6.0.0
+                 * @param eventName The name of the event.
+                 * @param listener The callback function
+                 */
+                prependListener(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Adds a **one-time**`listener` function for the event named `eventName` to the _beginning_ of the listeners array. The next time `eventName` is triggered, this
+                 * listener is removed, and then invoked.
+                 *
+                 * ```js
+                 * server.prependOnceListener('connection', (stream) => {
+                 *   console.log('Ah, we have our first user!');
+                 * });
+                 * ```
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 * @since v6.0.0
+                 * @param eventName The name of the event.
+                 * @param listener The callback function
+                 */
+                prependOnceListener(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Returns an array listing the events for which the emitter has registered
+                 * listeners. The values in the array are strings or `Symbol`s.
+                 *
+                 * ```js
+                 * const EventEmitter = require('events');
+                 * const myEE = new EventEmitter();
+                 * myEE.on('foo', () => {});
+                 * myEE.on('bar', () => {});
+                 *
+                 * const sym = Symbol('symbol');
+                 * myEE.on(sym, () => {});
+                 *
+                 * console.log(myEE.eventNames());
+                 * // Prints: [ 'foo', 'bar', Symbol(symbol) ]
+                 * ```
+                 * @since v6.0.0
+                 */
+                eventNames(): Array<string | symbol>;
+            }
+        }
+    }
+    export = EventEmitter;
+}
+declare module 'node:events' {
+    import events = require('events');
+    export = events;
+}
diff --git a/igv_component/node_modules/@types/node/fs.d.ts b/igv_component/node_modules/@types/node/fs.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..75c53fb0d542e5f7ce5b43c68982e428a6e653aa
--- /dev/null
+++ b/igv_component/node_modules/@types/node/fs.d.ts
@@ -0,0 +1,3872 @@
+/**
+ * The `fs` module enables interacting with the file system in a
+ * way modeled on standard POSIX functions.
+ *
+ * To use the promise-based APIs:
+ *
+ * ```js
+ * import * as fs from 'fs/promises';
+ * ```
+ *
+ * To use the callback and sync APIs:
+ *
+ * ```js
+ * import * as fs from 'fs';
+ * ```
+ *
+ * All file system operations have synchronous, callback, and promise-based
+ * forms, and are accessible using both CommonJS syntax and ES6 Modules (ESM).
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/fs.js)
+ */
+declare module 'fs' {
+    import * as stream from 'node:stream';
+    import { Abortable, EventEmitter } from 'node:events';
+    import { URL } from 'node:url';
+    import * as promises from 'node:fs/promises';
+    export { promises };
+    /**
+     * Valid types for path values in "fs".
+     */
+    export type PathLike = string | Buffer | URL;
+    export type PathOrFileDescriptor = PathLike | number;
+    export type TimeLike = string | number | Date;
+    export type NoParamCallback = (err: NodeJS.ErrnoException | null) => void;
+    export type BufferEncodingOption =
+        | 'buffer'
+        | {
+              encoding: 'buffer';
+          };
+    export interface ObjectEncodingOptions {
+        encoding?: BufferEncoding | null | undefined;
+    }
+    export type EncodingOption = ObjectEncodingOptions | BufferEncoding | undefined | null;
+    export type OpenMode = number | string;
+    export type Mode = number | string;
+    export interface StatsBase<T> {
+        isFile(): boolean;
+        isDirectory(): boolean;
+        isBlockDevice(): boolean;
+        isCharacterDevice(): boolean;
+        isSymbolicLink(): boolean;
+        isFIFO(): boolean;
+        isSocket(): boolean;
+        dev: T;
+        ino: T;
+        mode: T;
+        nlink: T;
+        uid: T;
+        gid: T;
+        rdev: T;
+        size: T;
+        blksize: T;
+        blocks: T;
+        atimeMs: T;
+        mtimeMs: T;
+        ctimeMs: T;
+        birthtimeMs: T;
+        atime: Date;
+        mtime: Date;
+        ctime: Date;
+        birthtime: Date;
+    }
+    export interface Stats extends StatsBase<number> {}
+    /**
+     * A `fs.Stats` object provides information about a file.
+     *
+     * Objects returned from {@link stat}, {@link lstat} and {@link fstat} and
+     * their synchronous counterparts are of this type.
+     * If `bigint` in the `options` passed to those methods is true, the numeric values
+     * will be `bigint` instead of `number`, and the object will contain additional
+     * nanosecond-precision properties suffixed with `Ns`.
+     *
+     * ```console
+     * Stats {
+     *   dev: 2114,
+     *   ino: 48064969,
+     *   mode: 33188,
+     *   nlink: 1,
+     *   uid: 85,
+     *   gid: 100,
+     *   rdev: 0,
+     *   size: 527,
+     *   blksize: 4096,
+     *   blocks: 8,
+     *   atimeMs: 1318289051000.1,
+     *   mtimeMs: 1318289051000.1,
+     *   ctimeMs: 1318289051000.1,
+     *   birthtimeMs: 1318289051000.1,
+     *   atime: Mon, 10 Oct 2011 23:24:11 GMT,
+     *   mtime: Mon, 10 Oct 2011 23:24:11 GMT,
+     *   ctime: Mon, 10 Oct 2011 23:24:11 GMT,
+     *   birthtime: Mon, 10 Oct 2011 23:24:11 GMT }
+     * ```
+     *
+     * `bigint` version:
+     *
+     * ```console
+     * BigIntStats {
+     *   dev: 2114n,
+     *   ino: 48064969n,
+     *   mode: 33188n,
+     *   nlink: 1n,
+     *   uid: 85n,
+     *   gid: 100n,
+     *   rdev: 0n,
+     *   size: 527n,
+     *   blksize: 4096n,
+     *   blocks: 8n,
+     *   atimeMs: 1318289051000n,
+     *   mtimeMs: 1318289051000n,
+     *   ctimeMs: 1318289051000n,
+     *   birthtimeMs: 1318289051000n,
+     *   atimeNs: 1318289051000000000n,
+     *   mtimeNs: 1318289051000000000n,
+     *   ctimeNs: 1318289051000000000n,
+     *   birthtimeNs: 1318289051000000000n,
+     *   atime: Mon, 10 Oct 2011 23:24:11 GMT,
+     *   mtime: Mon, 10 Oct 2011 23:24:11 GMT,
+     *   ctime: Mon, 10 Oct 2011 23:24:11 GMT,
+     *   birthtime: Mon, 10 Oct 2011 23:24:11 GMT }
+     * ```
+     * @since v0.1.21
+     */
+    export class Stats {}
+    /**
+     * A representation of a directory entry, which can be a file or a subdirectory
+     * within the directory, as returned by reading from an `fs.Dir`. The
+     * directory entry is a combination of the file name and file type pairs.
+     *
+     * Additionally, when {@link readdir} or {@link readdirSync} is called with
+     * the `withFileTypes` option set to `true`, the resulting array is filled with `fs.Dirent` objects, rather than strings or `Buffer` s.
+     * @since v10.10.0
+     */
+    export class Dirent {
+        /**
+         * Returns `true` if the `fs.Dirent` object describes a regular file.
+         * @since v10.10.0
+         */
+        isFile(): boolean;
+        /**
+         * Returns `true` if the `fs.Dirent` object describes a file system
+         * directory.
+         * @since v10.10.0
+         */
+        isDirectory(): boolean;
+        /**
+         * Returns `true` if the `fs.Dirent` object describes a block device.
+         * @since v10.10.0
+         */
+        isBlockDevice(): boolean;
+        /**
+         * Returns `true` if the `fs.Dirent` object describes a character device.
+         * @since v10.10.0
+         */
+        isCharacterDevice(): boolean;
+        /**
+         * Returns `true` if the `fs.Dirent` object describes a symbolic link.
+         * @since v10.10.0
+         */
+        isSymbolicLink(): boolean;
+        /**
+         * Returns `true` if the `fs.Dirent` object describes a first-in-first-out
+         * (FIFO) pipe.
+         * @since v10.10.0
+         */
+        isFIFO(): boolean;
+        /**
+         * Returns `true` if the `fs.Dirent` object describes a socket.
+         * @since v10.10.0
+         */
+        isSocket(): boolean;
+        /**
+         * The file name that this `fs.Dirent` object refers to. The type of this
+         * value is determined by the `options.encoding` passed to {@link readdir} or {@link readdirSync}.
+         * @since v10.10.0
+         */
+        name: string;
+    }
+    /**
+     * A class representing a directory stream.
+     *
+     * Created by {@link opendir}, {@link opendirSync}, or `fsPromises.opendir()`.
+     *
+     * ```js
+     * import { opendir } from 'fs/promises';
+     *
+     * try {
+     *   const dir = await opendir('./');
+     *   for await (const dirent of dir)
+     *     console.log(dirent.name);
+     * } catch (err) {
+     *   console.error(err);
+     * }
+     * ```
+     *
+     * When using the async iterator, the `fs.Dir` object will be automatically
+     * closed after the iterator exits.
+     * @since v12.12.0
+     */
+    export class Dir implements AsyncIterable<Dirent> {
+        /**
+         * The read-only path of this directory as was provided to {@link opendir},{@link opendirSync}, or `fsPromises.opendir()`.
+         * @since v12.12.0
+         */
+        readonly path: string;
+        /**
+         * Asynchronously iterates over the directory via `readdir(3)` until all entries have been read.
+         */
+        [Symbol.asyncIterator](): AsyncIterableIterator<Dirent>;
+        /**
+         * Asynchronously close the directory's underlying resource handle.
+         * Subsequent reads will result in errors.
+         *
+         * A promise is returned that will be resolved after the resource has been
+         * closed.
+         * @since v12.12.0
+         */
+        close(): Promise<void>;
+        close(cb: NoParamCallback): void;
+        /**
+         * Synchronously close the directory's underlying resource handle.
+         * Subsequent reads will result in errors.
+         * @since v12.12.0
+         */
+        closeSync(): void;
+        /**
+         * Asynchronously read the next directory entry via [`readdir(3)`](http://man7.org/linux/man-pages/man3/readdir.3.html) as an `fs.Dirent`.
+         *
+         * A promise is returned that will be resolved with an `fs.Dirent`, or `null`if there are no more directory entries to read.
+         *
+         * Directory entries returned by this function are in no particular order as
+         * provided by the operating system's underlying directory mechanisms.
+         * Entries added or removed while iterating over the directory might not be
+         * included in the iteration results.
+         * @since v12.12.0
+         * @return containing {fs.Dirent|null}
+         */
+        read(): Promise<Dirent | null>;
+        read(cb: (err: NodeJS.ErrnoException | null, dirEnt: Dirent | null) => void): void;
+        /**
+         * Synchronously read the next directory entry as an `fs.Dirent`. See the
+         * POSIX [`readdir(3)`](http://man7.org/linux/man-pages/man3/readdir.3.html) documentation for more detail.
+         *
+         * If there are no more directory entries to read, `null` will be returned.
+         *
+         * Directory entries returned by this function are in no particular order as
+         * provided by the operating system's underlying directory mechanisms.
+         * Entries added or removed while iterating over the directory might not be
+         * included in the iteration results.
+         * @since v12.12.0
+         */
+        readSync(): Dirent | null;
+    }
+    /**
+     * Class: fs.StatWatcher
+     * @since v14.3.0, v12.20.0
+     * Extends `EventEmitter`
+     * A successful call to {@link watchFile} method will return a new fs.StatWatcher object.
+     */
+    export interface StatWatcher extends EventEmitter {
+        /**
+         * When called, requests that the Node.js event loop _not_ exit so long as the `fs.StatWatcher` is active. Calling `watcher.ref()` multiple times will have
+         * no effect.
+         *
+         * By default, all `fs.StatWatcher` objects are "ref'ed", making it normally
+         * unnecessary to call `watcher.ref()` unless `watcher.unref()` had been
+         * called previously.
+         * @since v14.3.0, v12.20.0
+         */
+        ref(): this;
+        /**
+         * When called, the active `fs.StatWatcher` object will not require the Node.js
+         * event loop to remain active. If there is no other activity keeping the
+         * event loop running, the process may exit before the `fs.StatWatcher` object's
+         * callback is invoked. Calling `watcher.unref()` multiple times will have
+         * no effect.
+         * @since v14.3.0, v12.20.0
+         */
+        unref(): this;
+    }
+    export interface FSWatcher extends EventEmitter {
+        /**
+         * Stop watching for changes on the given `fs.FSWatcher`. Once stopped, the `fs.FSWatcher` object is no longer usable.
+         * @since v0.5.8
+         */
+        close(): void;
+        /**
+         * events.EventEmitter
+         *   1. change
+         *   2. error
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'change', listener: (eventType: string, filename: string | Buffer) => void): this;
+        addListener(event: 'error', listener: (error: Error) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'change', listener: (eventType: string, filename: string | Buffer) => void): this;
+        on(event: 'error', listener: (error: Error) => void): this;
+        on(event: 'close', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'change', listener: (eventType: string, filename: string | Buffer) => void): this;
+        once(event: 'error', listener: (error: Error) => void): this;
+        once(event: 'close', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'change', listener: (eventType: string, filename: string | Buffer) => void): this;
+        prependListener(event: 'error', listener: (error: Error) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'change', listener: (eventType: string, filename: string | Buffer) => void): this;
+        prependOnceListener(event: 'error', listener: (error: Error) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+    }
+    /**
+     * Instances of `fs.ReadStream` are created and returned using the {@link createReadStream} function.
+     * @since v0.1.93
+     */
+    export class ReadStream extends stream.Readable {
+        close(callback?: (err?: NodeJS.ErrnoException | null) => void): void;
+        /**
+         * The number of bytes that have been read so far.
+         * @since v6.4.0
+         */
+        bytesRead: number;
+        /**
+         * The path to the file the stream is reading from as specified in the first
+         * argument to `fs.createReadStream()`. If `path` is passed as a string, then`readStream.path` will be a string. If `path` is passed as a `Buffer`, then`readStream.path` will be a
+         * `Buffer`. If `fd` is specified, then`readStream.path` will be `undefined`.
+         * @since v0.1.93
+         */
+        path: string | Buffer;
+        /**
+         * This property is `true` if the underlying file has not been opened yet,
+         * i.e. before the `'ready'` event is emitted.
+         * @since v11.2.0, v10.16.0
+         */
+        pending: boolean;
+        /**
+         * events.EventEmitter
+         *   1. open
+         *   2. close
+         *   3. ready
+         */
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        addListener(event: 'end', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'open', listener: (fd: number) => void): this;
+        addListener(event: 'pause', listener: () => void): this;
+        addListener(event: 'readable', listener: () => void): this;
+        addListener(event: 'ready', listener: () => void): this;
+        addListener(event: 'resume', listener: () => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        on(event: 'end', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'open', listener: (fd: number) => void): this;
+        on(event: 'pause', listener: () => void): this;
+        on(event: 'readable', listener: () => void): this;
+        on(event: 'ready', listener: () => void): this;
+        on(event: 'resume', listener: () => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        once(event: 'end', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'open', listener: (fd: number) => void): this;
+        once(event: 'pause', listener: () => void): this;
+        once(event: 'readable', listener: () => void): this;
+        once(event: 'ready', listener: () => void): this;
+        once(event: 'resume', listener: () => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        prependListener(event: 'end', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'open', listener: (fd: number) => void): this;
+        prependListener(event: 'pause', listener: () => void): this;
+        prependListener(event: 'readable', listener: () => void): this;
+        prependListener(event: 'ready', listener: () => void): this;
+        prependListener(event: 'resume', listener: () => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        prependOnceListener(event: 'end', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'open', listener: (fd: number) => void): this;
+        prependOnceListener(event: 'pause', listener: () => void): this;
+        prependOnceListener(event: 'readable', listener: () => void): this;
+        prependOnceListener(event: 'ready', listener: () => void): this;
+        prependOnceListener(event: 'resume', listener: () => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    /**
+     * * Extends `stream.Writable`
+     *
+     * Instances of `fs.WriteStream` are created and returned using the {@link createWriteStream} function.
+     * @since v0.1.93
+     */
+    export class WriteStream extends stream.Writable {
+        /**
+         * Closes `writeStream`. Optionally accepts a
+         * callback that will be executed once the `writeStream`is closed.
+         * @since v0.9.4
+         */
+        close(callback?: (err?: NodeJS.ErrnoException | null) => void): void;
+        /**
+         * The number of bytes written so far. Does not include data that is still queued
+         * for writing.
+         * @since v0.4.7
+         */
+        bytesWritten: number;
+        /**
+         * The path to the file the stream is writing to as specified in the first
+         * argument to {@link createWriteStream}. If `path` is passed as a string, then`writeStream.path` will be a string. If `path` is passed as a `Buffer`, then`writeStream.path` will be a
+         * `Buffer`.
+         * @since v0.1.93
+         */
+        path: string | Buffer;
+        /**
+         * This property is `true` if the underlying file has not been opened yet,
+         * i.e. before the `'ready'` event is emitted.
+         * @since v11.2.0
+         */
+        pending: boolean;
+        /**
+         * events.EventEmitter
+         *   1. open
+         *   2. close
+         *   3. ready
+         */
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'drain', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'finish', listener: () => void): this;
+        addListener(event: 'open', listener: (fd: number) => void): this;
+        addListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        addListener(event: 'ready', listener: () => void): this;
+        addListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'drain', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'finish', listener: () => void): this;
+        on(event: 'open', listener: (fd: number) => void): this;
+        on(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        on(event: 'ready', listener: () => void): this;
+        on(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'drain', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'finish', listener: () => void): this;
+        once(event: 'open', listener: (fd: number) => void): this;
+        once(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        once(event: 'ready', listener: () => void): this;
+        once(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'drain', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'finish', listener: () => void): this;
+        prependListener(event: 'open', listener: (fd: number) => void): this;
+        prependListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        prependListener(event: 'ready', listener: () => void): this;
+        prependListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'drain', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'finish', listener: () => void): this;
+        prependOnceListener(event: 'open', listener: (fd: number) => void): this;
+        prependOnceListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        prependOnceListener(event: 'ready', listener: () => void): this;
+        prependOnceListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    /**
+     * Asynchronously rename file at `oldPath` to the pathname provided
+     * as `newPath`. In the case that `newPath` already exists, it will
+     * be overwritten. If there is a directory at `newPath`, an error will
+     * be raised instead. No arguments other than a possible exception are
+     * given to the completion callback.
+     *
+     * See also: [`rename(2)`](http://man7.org/linux/man-pages/man2/rename.2.html).
+     *
+     * ```js
+     * import { rename } from 'fs';
+     *
+     * rename('oldFile.txt', 'newFile.txt', (err) => {
+     *   if (err) throw err;
+     *   console.log('Rename complete!');
+     * });
+     * ```
+     * @since v0.0.2
+     */
+    export function rename(oldPath: PathLike, newPath: PathLike, callback: NoParamCallback): void;
+    export namespace rename {
+        /**
+         * Asynchronous rename(2) - Change the name or location of a file or directory.
+         * @param oldPath A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * URL support is _experimental_.
+         * @param newPath A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * URL support is _experimental_.
+         */
+        function __promisify__(oldPath: PathLike, newPath: PathLike): Promise<void>;
+    }
+    /**
+     * Renames the file from `oldPath` to `newPath`. Returns `undefined`.
+     *
+     * See the POSIX [`rename(2)`](http://man7.org/linux/man-pages/man2/rename.2.html) documentation for more details.
+     * @since v0.1.21
+     */
+    export function renameSync(oldPath: PathLike, newPath: PathLike): void;
+    /**
+     * Truncates the file. No arguments other than a possible exception are
+     * given to the completion callback. A file descriptor can also be passed as the
+     * first argument. In this case, `fs.ftruncate()` is called.
+     *
+     * ```js
+     * import { truncate } from 'fs';
+     * // Assuming that 'path/file.txt' is a regular file.
+     * truncate('path/file.txt', (err) => {
+     *   if (err) throw err;
+     *   console.log('path/file.txt was truncated');
+     * });
+     * ```
+     *
+     * Passing a file descriptor is deprecated and may result in an error being thrown
+     * in the future.
+     *
+     * See the POSIX [`truncate(2)`](http://man7.org/linux/man-pages/man2/truncate.2.html) documentation for more details.
+     * @since v0.8.6
+     * @param [len=0]
+     */
+    export function truncate(path: PathLike, len: number | undefined | null, callback: NoParamCallback): void;
+    /**
+     * Asynchronous truncate(2) - Truncate a file to a specified length.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function truncate(path: PathLike, callback: NoParamCallback): void;
+    export namespace truncate {
+        /**
+         * Asynchronous truncate(2) - Truncate a file to a specified length.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param len If not specified, defaults to `0`.
+         */
+        function __promisify__(path: PathLike, len?: number | null): Promise<void>;
+    }
+    /**
+     * Truncates the file. Returns `undefined`. A file descriptor can also be
+     * passed as the first argument. In this case, `fs.ftruncateSync()` is called.
+     *
+     * Passing a file descriptor is deprecated and may result in an error being thrown
+     * in the future.
+     * @since v0.8.6
+     * @param [len=0]
+     */
+    export function truncateSync(path: PathLike, len?: number | null): void;
+    /**
+     * Truncates the file descriptor. No arguments other than a possible exception are
+     * given to the completion callback.
+     *
+     * See the POSIX [`ftruncate(2)`](http://man7.org/linux/man-pages/man2/ftruncate.2.html) documentation for more detail.
+     *
+     * If the file referred to by the file descriptor was larger than `len` bytes, only
+     * the first `len` bytes will be retained in the file.
+     *
+     * For example, the following program retains only the first four bytes of the
+     * file:
+     *
+     * ```js
+     * import { open, close, ftruncate } from 'fs';
+     *
+     * function closeFd(fd) {
+     *   close(fd, (err) => {
+     *     if (err) throw err;
+     *   });
+     * }
+     *
+     * open('temp.txt', 'r+', (err, fd) => {
+     *   if (err) throw err;
+     *
+     *   try {
+     *     ftruncate(fd, 4, (err) => {
+     *       closeFd(fd);
+     *       if (err) throw err;
+     *     });
+     *   } catch (err) {
+     *     closeFd(fd);
+     *     if (err) throw err;
+     *   }
+     * });
+     * ```
+     *
+     * If the file previously was shorter than `len` bytes, it is extended, and the
+     * extended part is filled with null bytes (`'\0'`):
+     *
+     * If `len` is negative then `0` will be used.
+     * @since v0.8.6
+     * @param [len=0]
+     */
+    export function ftruncate(fd: number, len: number | undefined | null, callback: NoParamCallback): void;
+    /**
+     * Asynchronous ftruncate(2) - Truncate a file to a specified length.
+     * @param fd A file descriptor.
+     */
+    export function ftruncate(fd: number, callback: NoParamCallback): void;
+    export namespace ftruncate {
+        /**
+         * Asynchronous ftruncate(2) - Truncate a file to a specified length.
+         * @param fd A file descriptor.
+         * @param len If not specified, defaults to `0`.
+         */
+        function __promisify__(fd: number, len?: number | null): Promise<void>;
+    }
+    /**
+     * Truncates the file descriptor. Returns `undefined`.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link ftruncate}.
+     * @since v0.8.6
+     * @param [len=0]
+     */
+    export function ftruncateSync(fd: number, len?: number | null): void;
+    /**
+     * Asynchronously changes owner and group of a file. No arguments other than a
+     * possible exception are given to the completion callback.
+     *
+     * See the POSIX [`chown(2)`](http://man7.org/linux/man-pages/man2/chown.2.html) documentation for more detail.
+     * @since v0.1.97
+     */
+    export function chown(path: PathLike, uid: number, gid: number, callback: NoParamCallback): void;
+    export namespace chown {
+        /**
+         * Asynchronous chown(2) - Change ownership of a file.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         */
+        function __promisify__(path: PathLike, uid: number, gid: number): Promise<void>;
+    }
+    /**
+     * Synchronously changes owner and group of a file. Returns `undefined`.
+     * This is the synchronous version of {@link chown}.
+     *
+     * See the POSIX [`chown(2)`](http://man7.org/linux/man-pages/man2/chown.2.html) documentation for more detail.
+     * @since v0.1.97
+     */
+    export function chownSync(path: PathLike, uid: number, gid: number): void;
+    /**
+     * Sets the owner of the file. No arguments other than a possible exception are
+     * given to the completion callback.
+     *
+     * See the POSIX [`fchown(2)`](http://man7.org/linux/man-pages/man2/fchown.2.html) documentation for more detail.
+     * @since v0.4.7
+     */
+    export function fchown(fd: number, uid: number, gid: number, callback: NoParamCallback): void;
+    export namespace fchown {
+        /**
+         * Asynchronous fchown(2) - Change ownership of a file.
+         * @param fd A file descriptor.
+         */
+        function __promisify__(fd: number, uid: number, gid: number): Promise<void>;
+    }
+    /**
+     * Sets the owner of the file. Returns `undefined`.
+     *
+     * See the POSIX [`fchown(2)`](http://man7.org/linux/man-pages/man2/fchown.2.html) documentation for more detail.
+     * @since v0.4.7
+     * @param uid The file's new owner's user id.
+     * @param gid The file's new group's group id.
+     */
+    export function fchownSync(fd: number, uid: number, gid: number): void;
+    /**
+     * Set the owner of the symbolic link. No arguments other than a possible
+     * exception are given to the completion callback.
+     *
+     * See the POSIX [`lchown(2)`](http://man7.org/linux/man-pages/man2/lchown.2.html) documentation for more detail.
+     */
+    export function lchown(path: PathLike, uid: number, gid: number, callback: NoParamCallback): void;
+    export namespace lchown {
+        /**
+         * Asynchronous lchown(2) - Change ownership of a file. Does not dereference symbolic links.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         */
+        function __promisify__(path: PathLike, uid: number, gid: number): Promise<void>;
+    }
+    /**
+     * Set the owner for the path. Returns `undefined`.
+     *
+     * See the POSIX [`lchown(2)`](http://man7.org/linux/man-pages/man2/lchown.2.html) documentation for more details.
+     * @param uid The file's new owner's user id.
+     * @param gid The file's new group's group id.
+     */
+    export function lchownSync(path: PathLike, uid: number, gid: number): void;
+    /**
+     * Changes the access and modification times of a file in the same way as {@link utimes}, with the difference that if the path refers to a symbolic
+     * link, then the link is not dereferenced: instead, the timestamps of the
+     * symbolic link itself are changed.
+     *
+     * No arguments other than a possible exception are given to the completion
+     * callback.
+     * @since v14.5.0, v12.19.0
+     */
+    export function lutimes(path: PathLike, atime: TimeLike, mtime: TimeLike, callback: NoParamCallback): void;
+    export namespace lutimes {
+        /**
+         * Changes the access and modification times of a file in the same way as `fsPromises.utimes()`,
+         * with the difference that if the path refers to a symbolic link, then the link is not
+         * dereferenced: instead, the timestamps of the symbolic link itself are changed.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param atime The last access time. If a string is provided, it will be coerced to number.
+         * @param mtime The last modified time. If a string is provided, it will be coerced to number.
+         */
+        function __promisify__(path: PathLike, atime: TimeLike, mtime: TimeLike): Promise<void>;
+    }
+    /**
+     * Change the file system timestamps of the symbolic link referenced by `path`.
+     * Returns `undefined`, or throws an exception when parameters are incorrect or
+     * the operation fails. This is the synchronous version of {@link lutimes}.
+     * @since v14.5.0, v12.19.0
+     */
+    export function lutimesSync(path: PathLike, atime: TimeLike, mtime: TimeLike): void;
+    /**
+     * Asynchronously changes the permissions of a file. No arguments other than a
+     * possible exception are given to the completion callback.
+     *
+     * See the POSIX [`chmod(2)`](http://man7.org/linux/man-pages/man2/chmod.2.html) documentation for more detail.
+     *
+     * ```js
+     * import { chmod } from 'fs';
+     *
+     * chmod('my_file.txt', 0o775, (err) => {
+     *   if (err) throw err;
+     *   console.log('The permissions for file "my_file.txt" have been changed!');
+     * });
+     * ```
+     * @since v0.1.30
+     */
+    export function chmod(path: PathLike, mode: Mode, callback: NoParamCallback): void;
+    export namespace chmod {
+        /**
+         * Asynchronous chmod(2) - Change permissions of a file.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param mode A file mode. If a string is passed, it is parsed as an octal integer.
+         */
+        function __promisify__(path: PathLike, mode: Mode): Promise<void>;
+    }
+    /**
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link chmod}.
+     *
+     * See the POSIX [`chmod(2)`](http://man7.org/linux/man-pages/man2/chmod.2.html) documentation for more detail.
+     * @since v0.6.7
+     */
+    export function chmodSync(path: PathLike, mode: Mode): void;
+    /**
+     * Sets the permissions on the file. No arguments other than a possible exception
+     * are given to the completion callback.
+     *
+     * See the POSIX [`fchmod(2)`](http://man7.org/linux/man-pages/man2/fchmod.2.html) documentation for more detail.
+     * @since v0.4.7
+     */
+    export function fchmod(fd: number, mode: Mode, callback: NoParamCallback): void;
+    export namespace fchmod {
+        /**
+         * Asynchronous fchmod(2) - Change permissions of a file.
+         * @param fd A file descriptor.
+         * @param mode A file mode. If a string is passed, it is parsed as an octal integer.
+         */
+        function __promisify__(fd: number, mode: Mode): Promise<void>;
+    }
+    /**
+     * Sets the permissions on the file. Returns `undefined`.
+     *
+     * See the POSIX [`fchmod(2)`](http://man7.org/linux/man-pages/man2/fchmod.2.html) documentation for more detail.
+     * @since v0.4.7
+     */
+    export function fchmodSync(fd: number, mode: Mode): void;
+    /**
+     * Changes the permissions on a symbolic link. No arguments other than a possible
+     * exception are given to the completion callback.
+     *
+     * This method is only implemented on macOS.
+     *
+     * See the POSIX [`lchmod(2)`](https://www.freebsd.org/cgi/man.cgi?query=lchmod&sektion=2) documentation for more detail.
+     * @deprecated Since v0.4.7
+     */
+    export function lchmod(path: PathLike, mode: Mode, callback: NoParamCallback): void;
+    /** @deprecated */
+    export namespace lchmod {
+        /**
+         * Asynchronous lchmod(2) - Change permissions of a file. Does not dereference symbolic links.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param mode A file mode. If a string is passed, it is parsed as an octal integer.
+         */
+        function __promisify__(path: PathLike, mode: Mode): Promise<void>;
+    }
+    /**
+     * Changes the permissions on a symbolic link. Returns `undefined`.
+     *
+     * This method is only implemented on macOS.
+     *
+     * See the POSIX [`lchmod(2)`](https://www.freebsd.org/cgi/man.cgi?query=lchmod&sektion=2) documentation for more detail.
+     * @deprecated Since v0.4.7
+     */
+    export function lchmodSync(path: PathLike, mode: Mode): void;
+    /**
+     * Asynchronous [`stat(2)`](http://man7.org/linux/man-pages/man2/stat.2.html). The callback gets two arguments `(err, stats)` where`stats` is an `fs.Stats` object.
+     *
+     * In case of an error, the `err.code` will be one of `Common System Errors`.
+     *
+     * Using `fs.stat()` to check for the existence of a file before calling`fs.open()`, `fs.readFile()` or `fs.writeFile()` is not recommended.
+     * Instead, user code should open/read/write the file directly and handle the
+     * error raised if the file is not available.
+     *
+     * To check if a file exists without manipulating it afterwards, {@link access} is recommended.
+     *
+     * For example, given the following directory structure:
+     *
+     * ```text
+     * - txtDir
+     * -- file.txt
+     * - app.js
+     * ```
+     *
+     * The next program will check for the stats of the given paths:
+     *
+     * ```js
+     * import { stat } from 'fs';
+     *
+     * const pathsToCheck = ['./txtDir', './txtDir/file.txt'];
+     *
+     * for (let i = 0; i < pathsToCheck.length; i++) {
+     *   stat(pathsToCheck[i], (err, stats) => {
+     *     console.log(stats.isDirectory());
+     *     console.log(stats);
+     *   });
+     * }
+     * ```
+     *
+     * The resulting output will resemble:
+     *
+     * ```console
+     * true
+     * Stats {
+     *   dev: 16777220,
+     *   mode: 16877,
+     *   nlink: 3,
+     *   uid: 501,
+     *   gid: 20,
+     *   rdev: 0,
+     *   blksize: 4096,
+     *   ino: 14214262,
+     *   size: 96,
+     *   blocks: 0,
+     *   atimeMs: 1561174653071.963,
+     *   mtimeMs: 1561174614583.3518,
+     *   ctimeMs: 1561174626623.5366,
+     *   birthtimeMs: 1561174126937.2893,
+     *   atime: 2019-06-22T03:37:33.072Z,
+     *   mtime: 2019-06-22T03:36:54.583Z,
+     *   ctime: 2019-06-22T03:37:06.624Z,
+     *   birthtime: 2019-06-22T03:28:46.937Z
+     * }
+     * false
+     * Stats {
+     *   dev: 16777220,
+     *   mode: 33188,
+     *   nlink: 1,
+     *   uid: 501,
+     *   gid: 20,
+     *   rdev: 0,
+     *   blksize: 4096,
+     *   ino: 14214074,
+     *   size: 8,
+     *   blocks: 8,
+     *   atimeMs: 1561174616618.8555,
+     *   mtimeMs: 1561174614584,
+     *   ctimeMs: 1561174614583.8145,
+     *   birthtimeMs: 1561174007710.7478,
+     *   atime: 2019-06-22T03:36:56.619Z,
+     *   mtime: 2019-06-22T03:36:54.584Z,
+     *   ctime: 2019-06-22T03:36:54.584Z,
+     *   birthtime: 2019-06-22T03:26:47.711Z
+     * }
+     * ```
+     * @since v0.0.2
+     */
+    export function stat(path: PathLike, callback: (err: NodeJS.ErrnoException | null, stats: Stats) => void): void;
+    export function stat(
+        path: PathLike,
+        options:
+            | (StatOptions & {
+                  bigint?: false | undefined;
+              })
+            | undefined,
+        callback: (err: NodeJS.ErrnoException | null, stats: Stats) => void
+    ): void;
+    export function stat(
+        path: PathLike,
+        options: StatOptions & {
+            bigint: true;
+        },
+        callback: (err: NodeJS.ErrnoException | null, stats: BigIntStats) => void
+    ): void;
+    export function stat(path: PathLike, options: StatOptions | undefined, callback: (err: NodeJS.ErrnoException | null, stats: Stats | BigIntStats) => void): void;
+    export namespace stat {
+        /**
+         * Asynchronous stat(2) - Get file status.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         */
+        function __promisify__(
+            path: PathLike,
+            options?: StatOptions & {
+                bigint?: false | undefined;
+            }
+        ): Promise<Stats>;
+        function __promisify__(
+            path: PathLike,
+            options: StatOptions & {
+                bigint: true;
+            }
+        ): Promise<BigIntStats>;
+        function __promisify__(path: PathLike, options?: StatOptions): Promise<Stats | BigIntStats>;
+    }
+    export interface StatSyncFn extends Function {
+        (path: PathLike, options?: undefined): Stats;
+        (
+            path: PathLike,
+            options?: StatSyncOptions & {
+                bigint?: false | undefined;
+                throwIfNoEntry: false;
+            }
+        ): Stats | undefined;
+        (
+            path: PathLike,
+            options: StatSyncOptions & {
+                bigint: true;
+                throwIfNoEntry: false;
+            }
+        ): BigIntStats | undefined;
+        (
+            path: PathLike,
+            options?: StatSyncOptions & {
+                bigint?: false | undefined;
+            }
+        ): Stats;
+        (
+            path: PathLike,
+            options: StatSyncOptions & {
+                bigint: true;
+            }
+        ): BigIntStats;
+        (
+            path: PathLike,
+            options: StatSyncOptions & {
+                bigint: boolean;
+                throwIfNoEntry?: false | undefined;
+            }
+        ): Stats | BigIntStats;
+        (path: PathLike, options?: StatSyncOptions): Stats | BigIntStats | undefined;
+    }
+    /**
+     * Synchronous stat(2) - Get file status.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     */
+    export const statSync: StatSyncFn;
+    /**
+     * Invokes the callback with the `fs.Stats` for the file descriptor.
+     *
+     * See the POSIX [`fstat(2)`](http://man7.org/linux/man-pages/man2/fstat.2.html) documentation for more detail.
+     * @since v0.1.95
+     */
+    export function fstat(fd: number, callback: (err: NodeJS.ErrnoException | null, stats: Stats) => void): void;
+    export function fstat(
+        fd: number,
+        options:
+            | (StatOptions & {
+                  bigint?: false | undefined;
+              })
+            | undefined,
+        callback: (err: NodeJS.ErrnoException | null, stats: Stats) => void
+    ): void;
+    export function fstat(
+        fd: number,
+        options: StatOptions & {
+            bigint: true;
+        },
+        callback: (err: NodeJS.ErrnoException | null, stats: BigIntStats) => void
+    ): void;
+    export function fstat(fd: number, options: StatOptions | undefined, callback: (err: NodeJS.ErrnoException | null, stats: Stats | BigIntStats) => void): void;
+    export namespace fstat {
+        /**
+         * Asynchronous fstat(2) - Get file status.
+         * @param fd A file descriptor.
+         */
+        function __promisify__(
+            fd: number,
+            options?: StatOptions & {
+                bigint?: false | undefined;
+            }
+        ): Promise<Stats>;
+        function __promisify__(
+            fd: number,
+            options: StatOptions & {
+                bigint: true;
+            }
+        ): Promise<BigIntStats>;
+        function __promisify__(fd: number, options?: StatOptions): Promise<Stats | BigIntStats>;
+    }
+    /**
+     * Retrieves the `fs.Stats` for the file descriptor.
+     *
+     * See the POSIX [`fstat(2)`](http://man7.org/linux/man-pages/man2/fstat.2.html) documentation for more detail.
+     * @since v0.1.95
+     */
+    export function fstatSync(
+        fd: number,
+        options?: StatOptions & {
+            bigint?: false | undefined;
+        }
+    ): Stats;
+    export function fstatSync(
+        fd: number,
+        options: StatOptions & {
+            bigint: true;
+        }
+    ): BigIntStats;
+    export function fstatSync(fd: number, options?: StatOptions): Stats | BigIntStats;
+    /**
+     * Retrieves the `fs.Stats` for the symbolic link referred to by the path.
+     * The callback gets two arguments `(err, stats)` where `stats` is a `fs.Stats` object. `lstat()` is identical to `stat()`, except that if `path` is a symbolic
+     * link, then the link itself is stat-ed, not the file that it refers to.
+     *
+     * See the POSIX [`lstat(2)`](http://man7.org/linux/man-pages/man2/lstat.2.html) documentation for more details.
+     * @since v0.1.30
+     */
+    export function lstat(path: PathLike, callback: (err: NodeJS.ErrnoException | null, stats: Stats) => void): void;
+    export function lstat(
+        path: PathLike,
+        options:
+            | (StatOptions & {
+                  bigint?: false | undefined;
+              })
+            | undefined,
+        callback: (err: NodeJS.ErrnoException | null, stats: Stats) => void
+    ): void;
+    export function lstat(
+        path: PathLike,
+        options: StatOptions & {
+            bigint: true;
+        },
+        callback: (err: NodeJS.ErrnoException | null, stats: BigIntStats) => void
+    ): void;
+    export function lstat(path: PathLike, options: StatOptions | undefined, callback: (err: NodeJS.ErrnoException | null, stats: Stats | BigIntStats) => void): void;
+    export namespace lstat {
+        /**
+         * Asynchronous lstat(2) - Get file status. Does not dereference symbolic links.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         */
+        function __promisify__(
+            path: PathLike,
+            options?: StatOptions & {
+                bigint?: false | undefined;
+            }
+        ): Promise<Stats>;
+        function __promisify__(
+            path: PathLike,
+            options: StatOptions & {
+                bigint: true;
+            }
+        ): Promise<BigIntStats>;
+        function __promisify__(path: PathLike, options?: StatOptions): Promise<Stats | BigIntStats>;
+    }
+    /**
+     * Synchronous lstat(2) - Get file status. Does not dereference symbolic links.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     */
+    export const lstatSync: StatSyncFn;
+    /**
+     * Creates a new link from the `existingPath` to the `newPath`. See the POSIX [`link(2)`](http://man7.org/linux/man-pages/man2/link.2.html) documentation for more detail. No arguments other than
+     * a possible
+     * exception are given to the completion callback.
+     * @since v0.1.31
+     */
+    export function link(existingPath: PathLike, newPath: PathLike, callback: NoParamCallback): void;
+    export namespace link {
+        /**
+         * Asynchronous link(2) - Create a new link (also known as a hard link) to an existing file.
+         * @param existingPath A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param newPath A path to a file. If a URL is provided, it must use the `file:` protocol.
+         */
+        function __promisify__(existingPath: PathLike, newPath: PathLike): Promise<void>;
+    }
+    /**
+     * Creates a new link from the `existingPath` to the `newPath`. See the POSIX [`link(2)`](http://man7.org/linux/man-pages/man2/link.2.html) documentation for more detail. Returns `undefined`.
+     * @since v0.1.31
+     */
+    export function linkSync(existingPath: PathLike, newPath: PathLike): void;
+    /**
+     * Creates the link called `path` pointing to `target`. No arguments other than a
+     * possible exception are given to the completion callback.
+     *
+     * See the POSIX [`symlink(2)`](http://man7.org/linux/man-pages/man2/symlink.2.html) documentation for more details.
+     *
+     * The `type` argument is only available on Windows and ignored on other platforms.
+     * It can be set to `'dir'`, `'file'`, or `'junction'`. If the `type` argument is
+     * not set, Node.js will autodetect `target` type and use `'file'` or `'dir'`. If
+     * the `target` does not exist, `'file'` will be used. Windows junction points
+     * require the destination path to be absolute. When using `'junction'`, the`target` argument will automatically be normalized to absolute path.
+     *
+     * Relative targets are relative to the link’s parent directory.
+     *
+     * ```js
+     * import { symlink } from 'fs';
+     *
+     * symlink('./mew', './mewtwo', callback);
+     * ```
+     *
+     * The above example creates a symbolic link `mewtwo` which points to `mew` in the
+     * same directory:
+     *
+     * ```bash
+     * $ tree .
+     * .
+     * ├── mew
+     * └── mewtwo -> ./mew
+     * ```
+     * @since v0.1.31
+     */
+    export function symlink(target: PathLike, path: PathLike, type: symlink.Type | undefined | null, callback: NoParamCallback): void;
+    /**
+     * Asynchronous symlink(2) - Create a new symbolic link to an existing file.
+     * @param target A path to an existing file. If a URL is provided, it must use the `file:` protocol.
+     * @param path A path to the new symlink. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function symlink(target: PathLike, path: PathLike, callback: NoParamCallback): void;
+    export namespace symlink {
+        /**
+         * Asynchronous symlink(2) - Create a new symbolic link to an existing file.
+         * @param target A path to an existing file. If a URL is provided, it must use the `file:` protocol.
+         * @param path A path to the new symlink. If a URL is provided, it must use the `file:` protocol.
+         * @param type May be set to `'dir'`, `'file'`, or `'junction'` (default is `'file'`) and is only available on Windows (ignored on other platforms).
+         * When using `'junction'`, the `target` argument will automatically be normalized to an absolute path.
+         */
+        function __promisify__(target: PathLike, path: PathLike, type?: string | null): Promise<void>;
+        type Type = 'dir' | 'file' | 'junction';
+    }
+    /**
+     * Returns `undefined`.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link symlink}.
+     * @since v0.1.31
+     */
+    export function symlinkSync(target: PathLike, path: PathLike, type?: symlink.Type | null): void;
+    /**
+     * Reads the contents of the symbolic link referred to by `path`. The callback gets
+     * two arguments `(err, linkString)`.
+     *
+     * See the POSIX [`readlink(2)`](http://man7.org/linux/man-pages/man2/readlink.2.html) documentation for more details.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use for
+     * the link path passed to the callback. If the `encoding` is set to `'buffer'`,
+     * the link path returned will be passed as a `Buffer` object.
+     * @since v0.1.31
+     */
+    export function readlink(path: PathLike, options: EncodingOption, callback: (err: NodeJS.ErrnoException | null, linkString: string) => void): void;
+    /**
+     * Asynchronous readlink(2) - read value of a symbolic link.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function readlink(path: PathLike, options: BufferEncodingOption, callback: (err: NodeJS.ErrnoException | null, linkString: Buffer) => void): void;
+    /**
+     * Asynchronous readlink(2) - read value of a symbolic link.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function readlink(path: PathLike, options: EncodingOption, callback: (err: NodeJS.ErrnoException | null, linkString: string | Buffer) => void): void;
+    /**
+     * Asynchronous readlink(2) - read value of a symbolic link.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function readlink(path: PathLike, callback: (err: NodeJS.ErrnoException | null, linkString: string) => void): void;
+    export namespace readlink {
+        /**
+         * Asynchronous readlink(2) - read value of a symbolic link.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(path: PathLike, options?: EncodingOption): Promise<string>;
+        /**
+         * Asynchronous readlink(2) - read value of a symbolic link.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(path: PathLike, options: BufferEncodingOption): Promise<Buffer>;
+        /**
+         * Asynchronous readlink(2) - read value of a symbolic link.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(path: PathLike, options?: EncodingOption): Promise<string | Buffer>;
+    }
+    /**
+     * Returns the symbolic link's string value.
+     *
+     * See the POSIX [`readlink(2)`](http://man7.org/linux/man-pages/man2/readlink.2.html) documentation for more details.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use for
+     * the link path returned. If the `encoding` is set to `'buffer'`,
+     * the link path returned will be passed as a `Buffer` object.
+     * @since v0.1.31
+     */
+    export function readlinkSync(path: PathLike, options?: EncodingOption): string;
+    /**
+     * Synchronous readlink(2) - read value of a symbolic link.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function readlinkSync(path: PathLike, options: BufferEncodingOption): Buffer;
+    /**
+     * Synchronous readlink(2) - read value of a symbolic link.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function readlinkSync(path: PathLike, options?: EncodingOption): string | Buffer;
+    /**
+     * Asynchronously computes the canonical pathname by resolving `.`, `..` and
+     * symbolic links.
+     *
+     * A canonical pathname is not necessarily unique. Hard links and bind mounts can
+     * expose a file system entity through many pathnames.
+     *
+     * This function behaves like [`realpath(3)`](http://man7.org/linux/man-pages/man3/realpath.3.html), with some exceptions:
+     *
+     * 1. No case conversion is performed on case-insensitive file systems.
+     * 2. The maximum number of symbolic links is platform-independent and generally
+     * (much) higher than what the native [`realpath(3)`](http://man7.org/linux/man-pages/man3/realpath.3.html) implementation supports.
+     *
+     * The `callback` gets two arguments `(err, resolvedPath)`. May use `process.cwd`to resolve relative paths.
+     *
+     * Only paths that can be converted to UTF8 strings are supported.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use for
+     * the path passed to the callback. If the `encoding` is set to `'buffer'`,
+     * the path returned will be passed as a `Buffer` object.
+     *
+     * If `path` resolves to a socket or a pipe, the function will return a system
+     * dependent name for that object.
+     * @since v0.1.31
+     */
+    export function realpath(path: PathLike, options: EncodingOption, callback: (err: NodeJS.ErrnoException | null, resolvedPath: string) => void): void;
+    /**
+     * Asynchronous realpath(3) - return the canonicalized absolute pathname.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function realpath(path: PathLike, options: BufferEncodingOption, callback: (err: NodeJS.ErrnoException | null, resolvedPath: Buffer) => void): void;
+    /**
+     * Asynchronous realpath(3) - return the canonicalized absolute pathname.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function realpath(path: PathLike, options: EncodingOption, callback: (err: NodeJS.ErrnoException | null, resolvedPath: string | Buffer) => void): void;
+    /**
+     * Asynchronous realpath(3) - return the canonicalized absolute pathname.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function realpath(path: PathLike, callback: (err: NodeJS.ErrnoException | null, resolvedPath: string) => void): void;
+    export namespace realpath {
+        /**
+         * Asynchronous realpath(3) - return the canonicalized absolute pathname.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(path: PathLike, options?: EncodingOption): Promise<string>;
+        /**
+         * Asynchronous realpath(3) - return the canonicalized absolute pathname.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(path: PathLike, options: BufferEncodingOption): Promise<Buffer>;
+        /**
+         * Asynchronous realpath(3) - return the canonicalized absolute pathname.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(path: PathLike, options?: EncodingOption): Promise<string | Buffer>;
+        /**
+         * Asynchronous [`realpath(3)`](http://man7.org/linux/man-pages/man3/realpath.3.html).
+         *
+         * The `callback` gets two arguments `(err, resolvedPath)`.
+         *
+         * Only paths that can be converted to UTF8 strings are supported.
+         *
+         * The optional `options` argument can be a string specifying an encoding, or an
+         * object with an `encoding` property specifying the character encoding to use for
+         * the path passed to the callback. If the `encoding` is set to `'buffer'`,
+         * the path returned will be passed as a `Buffer` object.
+         *
+         * On Linux, when Node.js is linked against musl libc, the procfs file system must
+         * be mounted on `/proc` in order for this function to work. Glibc does not have
+         * this restriction.
+         * @since v9.2.0
+         */
+        function native(path: PathLike, options: EncodingOption, callback: (err: NodeJS.ErrnoException | null, resolvedPath: string) => void): void;
+        function native(path: PathLike, options: BufferEncodingOption, callback: (err: NodeJS.ErrnoException | null, resolvedPath: Buffer) => void): void;
+        function native(path: PathLike, options: EncodingOption, callback: (err: NodeJS.ErrnoException | null, resolvedPath: string | Buffer) => void): void;
+        function native(path: PathLike, callback: (err: NodeJS.ErrnoException | null, resolvedPath: string) => void): void;
+    }
+    /**
+     * Returns the resolved pathname.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link realpath}.
+     * @since v0.1.31
+     */
+    export function realpathSync(path: PathLike, options?: EncodingOption): string;
+    /**
+     * Synchronous realpath(3) - return the canonicalized absolute pathname.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function realpathSync(path: PathLike, options: BufferEncodingOption): Buffer;
+    /**
+     * Synchronous realpath(3) - return the canonicalized absolute pathname.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function realpathSync(path: PathLike, options?: EncodingOption): string | Buffer;
+    export namespace realpathSync {
+        function native(path: PathLike, options?: EncodingOption): string;
+        function native(path: PathLike, options: BufferEncodingOption): Buffer;
+        function native(path: PathLike, options?: EncodingOption): string | Buffer;
+    }
+    /**
+     * Asynchronously removes a file or symbolic link. No arguments other than a
+     * possible exception are given to the completion callback.
+     *
+     * ```js
+     * import { unlink } from 'fs';
+     * // Assuming that 'path/file.txt' is a regular file.
+     * unlink('path/file.txt', (err) => {
+     *   if (err) throw err;
+     *   console.log('path/file.txt was deleted');
+     * });
+     * ```
+     *
+     * `fs.unlink()` will not work on a directory, empty or otherwise. To remove a
+     * directory, use {@link rmdir}.
+     *
+     * See the POSIX [`unlink(2)`](http://man7.org/linux/man-pages/man2/unlink.2.html) documentation for more details.
+     * @since v0.0.2
+     */
+    export function unlink(path: PathLike, callback: NoParamCallback): void;
+    export namespace unlink {
+        /**
+         * Asynchronous unlink(2) - delete a name and possibly the file it refers to.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         */
+        function __promisify__(path: PathLike): Promise<void>;
+    }
+    /**
+     * Synchronous [`unlink(2)`](http://man7.org/linux/man-pages/man2/unlink.2.html). Returns `undefined`.
+     * @since v0.1.21
+     */
+    export function unlinkSync(path: PathLike): void;
+    export interface RmDirOptions {
+        /**
+         * If an `EBUSY`, `EMFILE`, `ENFILE`, `ENOTEMPTY`, or
+         * `EPERM` error is encountered, Node.js will retry the operation with a linear
+         * backoff wait of `retryDelay` ms longer on each try. This option represents the
+         * number of retries. This option is ignored if the `recursive` option is not
+         * `true`.
+         * @default 0
+         */
+        maxRetries?: number | undefined;
+        /**
+         * @deprecated since v14.14.0 In future versions of Node.js and will trigger a warning
+         * `fs.rmdir(path, { recursive: true })` will throw if `path` does not exist or is a file.
+         * Use `fs.rm(path, { recursive: true, force: true })` instead.
+         *
+         * If `true`, perform a recursive directory removal. In
+         * recursive mode, operations are retried on failure.
+         * @default false
+         */
+        recursive?: boolean | undefined;
+        /**
+         * The amount of time in milliseconds to wait between retries.
+         * This option is ignored if the `recursive` option is not `true`.
+         * @default 100
+         */
+        retryDelay?: number | undefined;
+    }
+    /**
+     * Asynchronous [`rmdir(2)`](http://man7.org/linux/man-pages/man2/rmdir.2.html). No arguments other than a possible exception are given
+     * to the completion callback.
+     *
+     * Using `fs.rmdir()` on a file (not a directory) results in an `ENOENT` error on
+     * Windows and an `ENOTDIR` error on POSIX.
+     *
+     * To get a behavior similar to the `rm -rf` Unix command, use {@link rm} with options `{ recursive: true, force: true }`.
+     * @since v0.0.2
+     */
+    export function rmdir(path: PathLike, callback: NoParamCallback): void;
+    export function rmdir(path: PathLike, options: RmDirOptions, callback: NoParamCallback): void;
+    export namespace rmdir {
+        /**
+         * Asynchronous rmdir(2) - delete a directory.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         */
+        function __promisify__(path: PathLike, options?: RmDirOptions): Promise<void>;
+    }
+    /**
+     * Synchronous [`rmdir(2)`](http://man7.org/linux/man-pages/man2/rmdir.2.html). Returns `undefined`.
+     *
+     * Using `fs.rmdirSync()` on a file (not a directory) results in an `ENOENT` error
+     * on Windows and an `ENOTDIR` error on POSIX.
+     *
+     * To get a behavior similar to the `rm -rf` Unix command, use {@link rmSync} with options `{ recursive: true, force: true }`.
+     * @since v0.1.21
+     */
+    export function rmdirSync(path: PathLike, options?: RmDirOptions): void;
+    export interface RmOptions {
+        /**
+         * When `true`, exceptions will be ignored if `path` does not exist.
+         * @default false
+         */
+        force?: boolean | undefined;
+        /**
+         * If an `EBUSY`, `EMFILE`, `ENFILE`, `ENOTEMPTY`, or
+         * `EPERM` error is encountered, Node.js will retry the operation with a linear
+         * backoff wait of `retryDelay` ms longer on each try. This option represents the
+         * number of retries. This option is ignored if the `recursive` option is not
+         * `true`.
+         * @default 0
+         */
+        maxRetries?: number | undefined;
+        /**
+         * If `true`, perform a recursive directory removal. In
+         * recursive mode, operations are retried on failure.
+         * @default false
+         */
+        recursive?: boolean | undefined;
+        /**
+         * The amount of time in milliseconds to wait between retries.
+         * This option is ignored if the `recursive` option is not `true`.
+         * @default 100
+         */
+        retryDelay?: number | undefined;
+    }
+    /**
+     * Asynchronously removes files and directories (modeled on the standard POSIX `rm`utility). No arguments other than a possible exception are given to the
+     * completion callback.
+     * @since v14.14.0
+     */
+    export function rm(path: PathLike, callback: NoParamCallback): void;
+    export function rm(path: PathLike, options: RmOptions, callback: NoParamCallback): void;
+    export namespace rm {
+        /**
+         * Asynchronously removes files and directories (modeled on the standard POSIX `rm` utility).
+         */
+        function __promisify__(path: PathLike, options?: RmOptions): Promise<void>;
+    }
+    /**
+     * Synchronously removes files and directories (modeled on the standard POSIX `rm`utility). Returns `undefined`.
+     * @since v14.14.0
+     */
+    export function rmSync(path: PathLike, options?: RmOptions): void;
+    export interface MakeDirectoryOptions {
+        /**
+         * Indicates whether parent folders should be created.
+         * If a folder was created, the path to the first created folder will be returned.
+         * @default false
+         */
+        recursive?: boolean | undefined;
+        /**
+         * A file mode. If a string is passed, it is parsed as an octal integer. If not specified
+         * @default 0o777
+         */
+        mode?: Mode | undefined;
+    }
+    /**
+     * Asynchronously creates a directory.
+     *
+     * The callback is given a possible exception and, if `recursive` is `true`, the
+     * first directory path created, `(err[, path])`.`path` can still be `undefined` when `recursive` is `true`, if no directory was
+     * created.
+     *
+     * The optional `options` argument can be an integer specifying `mode` (permission
+     * and sticky bits), or an object with a `mode` property and a `recursive`property indicating whether parent directories should be created. Calling`fs.mkdir()` when `path` is a directory that
+     * exists results in an error only
+     * when `recursive` is false.
+     *
+     * ```js
+     * import { mkdir } from 'fs';
+     *
+     * // Creates /tmp/a/apple, regardless of whether `/tmp` and /tmp/a exist.
+     * mkdir('/tmp/a/apple', { recursive: true }, (err) => {
+     *   if (err) throw err;
+     * });
+     * ```
+     *
+     * On Windows, using `fs.mkdir()` on the root directory even with recursion will
+     * result in an error:
+     *
+     * ```js
+     * import { mkdir } from 'fs';
+     *
+     * mkdir('/', { recursive: true }, (err) => {
+     *   // => [Error: EPERM: operation not permitted, mkdir 'C:\']
+     * });
+     * ```
+     *
+     * See the POSIX [`mkdir(2)`](http://man7.org/linux/man-pages/man2/mkdir.2.html) documentation for more details.
+     * @since v0.1.8
+     */
+    export function mkdir(
+        path: PathLike,
+        options: MakeDirectoryOptions & {
+            recursive: true;
+        },
+        callback: (err: NodeJS.ErrnoException | null, path?: string) => void
+    ): void;
+    /**
+     * Asynchronous mkdir(2) - create a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+     * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+     */
+    export function mkdir(
+        path: PathLike,
+        options:
+            | Mode
+            | (MakeDirectoryOptions & {
+                  recursive?: false | undefined;
+              })
+            | null
+            | undefined,
+        callback: NoParamCallback
+    ): void;
+    /**
+     * Asynchronous mkdir(2) - create a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+     * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+     */
+    export function mkdir(path: PathLike, options: Mode | MakeDirectoryOptions | null | undefined, callback: (err: NodeJS.ErrnoException | null, path?: string) => void): void;
+    /**
+     * Asynchronous mkdir(2) - create a directory with a mode of `0o777`.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function mkdir(path: PathLike, callback: NoParamCallback): void;
+    export namespace mkdir {
+        /**
+         * Asynchronous mkdir(2) - create a directory.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+         * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+         */
+        function __promisify__(
+            path: PathLike,
+            options: MakeDirectoryOptions & {
+                recursive: true;
+            }
+        ): Promise<string | undefined>;
+        /**
+         * Asynchronous mkdir(2) - create a directory.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+         * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+         */
+        function __promisify__(
+            path: PathLike,
+            options?:
+                | Mode
+                | (MakeDirectoryOptions & {
+                      recursive?: false | undefined;
+                  })
+                | null
+        ): Promise<void>;
+        /**
+         * Asynchronous mkdir(2) - create a directory.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+         * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+         */
+        function __promisify__(path: PathLike, options?: Mode | MakeDirectoryOptions | null): Promise<string | undefined>;
+    }
+    /**
+     * Synchronously creates a directory. Returns `undefined`, or if `recursive` is`true`, the first directory path created.
+     * This is the synchronous version of {@link mkdir}.
+     *
+     * See the POSIX [`mkdir(2)`](http://man7.org/linux/man-pages/man2/mkdir.2.html) documentation for more details.
+     * @since v0.1.21
+     */
+    export function mkdirSync(
+        path: PathLike,
+        options: MakeDirectoryOptions & {
+            recursive: true;
+        }
+    ): string | undefined;
+    /**
+     * Synchronous mkdir(2) - create a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+     * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+     */
+    export function mkdirSync(
+        path: PathLike,
+        options?:
+            | Mode
+            | (MakeDirectoryOptions & {
+                  recursive?: false | undefined;
+              })
+            | null
+    ): void;
+    /**
+     * Synchronous mkdir(2) - create a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+     * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+     */
+    export function mkdirSync(path: PathLike, options?: Mode | MakeDirectoryOptions | null): string | undefined;
+    /**
+     * Creates a unique temporary directory.
+     *
+     * Generates six random characters to be appended behind a required`prefix` to create a unique temporary directory. Due to platform
+     * inconsistencies, avoid trailing `X` characters in `prefix`. Some platforms,
+     * notably the BSDs, can return more than six random characters, and replace
+     * trailing `X` characters in `prefix` with random characters.
+     *
+     * The created directory path is passed as a string to the callback's second
+     * parameter.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use.
+     *
+     * ```js
+     * import { mkdtemp } from 'fs';
+     *
+     * mkdtemp(path.join(os.tmpdir(), 'foo-'), (err, directory) => {
+     *   if (err) throw err;
+     *   console.log(directory);
+     *   // Prints: /tmp/foo-itXde2 or C:\Users\...\AppData\Local\Temp\foo-itXde2
+     * });
+     * ```
+     *
+     * The `fs.mkdtemp()` method will append the six randomly selected characters
+     * directly to the `prefix` string. For instance, given a directory `/tmp`, if the
+     * intention is to create a temporary directory _within_`/tmp`, the `prefix`must end with a trailing platform-specific path separator
+     * (`require('path').sep`).
+     *
+     * ```js
+     * import { tmpdir } from 'os';
+     * import { mkdtemp } from 'fs';
+     *
+     * // The parent directory for the new temporary directory
+     * const tmpDir = tmpdir();
+     *
+     * // This method is *INCORRECT*:
+     * mkdtemp(tmpDir, (err, directory) => {
+     *   if (err) throw err;
+     *   console.log(directory);
+     *   // Will print something similar to `/tmpabc123`.
+     *   // A new temporary directory is created at the file system root
+     *   // rather than *within* the /tmp directory.
+     * });
+     *
+     * // This method is *CORRECT*:
+     * import { sep } from 'path';
+     * mkdtemp(`${tmpDir}${sep}`, (err, directory) => {
+     *   if (err) throw err;
+     *   console.log(directory);
+     *   // Will print something similar to `/tmp/abc123`.
+     *   // A new temporary directory is created within
+     *   // the /tmp directory.
+     * });
+     * ```
+     * @since v5.10.0
+     */
+    export function mkdtemp(prefix: string, options: EncodingOption, callback: (err: NodeJS.ErrnoException | null, folder: string) => void): void;
+    /**
+     * Asynchronously creates a unique temporary directory.
+     * Generates six random characters to be appended behind a required prefix to create a unique temporary directory.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function mkdtemp(
+        prefix: string,
+        options:
+            | 'buffer'
+            | {
+                  encoding: 'buffer';
+              },
+        callback: (err: NodeJS.ErrnoException | null, folder: Buffer) => void
+    ): void;
+    /**
+     * Asynchronously creates a unique temporary directory.
+     * Generates six random characters to be appended behind a required prefix to create a unique temporary directory.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function mkdtemp(prefix: string, options: EncodingOption, callback: (err: NodeJS.ErrnoException | null, folder: string | Buffer) => void): void;
+    /**
+     * Asynchronously creates a unique temporary directory.
+     * Generates six random characters to be appended behind a required prefix to create a unique temporary directory.
+     */
+    export function mkdtemp(prefix: string, callback: (err: NodeJS.ErrnoException | null, folder: string) => void): void;
+    export namespace mkdtemp {
+        /**
+         * Asynchronously creates a unique temporary directory.
+         * Generates six random characters to be appended behind a required prefix to create a unique temporary directory.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(prefix: string, options?: EncodingOption): Promise<string>;
+        /**
+         * Asynchronously creates a unique temporary directory.
+         * Generates six random characters to be appended behind a required prefix to create a unique temporary directory.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(prefix: string, options: BufferEncodingOption): Promise<Buffer>;
+        /**
+         * Asynchronously creates a unique temporary directory.
+         * Generates six random characters to be appended behind a required prefix to create a unique temporary directory.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(prefix: string, options?: EncodingOption): Promise<string | Buffer>;
+    }
+    /**
+     * Returns the created directory path.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link mkdtemp}.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use.
+     * @since v5.10.0
+     */
+    export function mkdtempSync(prefix: string, options?: EncodingOption): string;
+    /**
+     * Synchronously creates a unique temporary directory.
+     * Generates six random characters to be appended behind a required prefix to create a unique temporary directory.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function mkdtempSync(prefix: string, options: BufferEncodingOption): Buffer;
+    /**
+     * Synchronously creates a unique temporary directory.
+     * Generates six random characters to be appended behind a required prefix to create a unique temporary directory.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function mkdtempSync(prefix: string, options?: EncodingOption): string | Buffer;
+    /**
+     * Reads the contents of a directory. The callback gets two arguments `(err, files)`where `files` is an array of the names of the files in the directory excluding`'.'` and `'..'`.
+     *
+     * See the POSIX [`readdir(3)`](http://man7.org/linux/man-pages/man3/readdir.3.html) documentation for more details.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use for
+     * the filenames passed to the callback. If the `encoding` is set to `'buffer'`,
+     * the filenames returned will be passed as `Buffer` objects.
+     *
+     * If `options.withFileTypes` is set to `true`, the `files` array will contain `fs.Dirent` objects.
+     * @since v0.1.8
+     */
+    export function readdir(
+        path: PathLike,
+        options:
+            | {
+                  encoding: BufferEncoding | null;
+                  withFileTypes?: false | undefined;
+              }
+            | BufferEncoding
+            | undefined
+            | null,
+        callback: (err: NodeJS.ErrnoException | null, files: string[]) => void
+    ): void;
+    /**
+     * Asynchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function readdir(
+        path: PathLike,
+        options:
+            | {
+                  encoding: 'buffer';
+                  withFileTypes?: false | undefined;
+              }
+            | 'buffer',
+        callback: (err: NodeJS.ErrnoException | null, files: Buffer[]) => void
+    ): void;
+    /**
+     * Asynchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function readdir(
+        path: PathLike,
+        options:
+            | (ObjectEncodingOptions & {
+                  withFileTypes?: false | undefined;
+              })
+            | BufferEncoding
+            | undefined
+            | null,
+        callback: (err: NodeJS.ErrnoException | null, files: string[] | Buffer[]) => void
+    ): void;
+    /**
+     * Asynchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function readdir(path: PathLike, callback: (err: NodeJS.ErrnoException | null, files: string[]) => void): void;
+    /**
+     * Asynchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options If called with `withFileTypes: true` the result data will be an array of Dirent.
+     */
+    export function readdir(
+        path: PathLike,
+        options: ObjectEncodingOptions & {
+            withFileTypes: true;
+        },
+        callback: (err: NodeJS.ErrnoException | null, files: Dirent[]) => void
+    ): void;
+    export namespace readdir {
+        /**
+         * Asynchronous readdir(3) - read a directory.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(
+            path: PathLike,
+            options?:
+                | {
+                      encoding: BufferEncoding | null;
+                      withFileTypes?: false | undefined;
+                  }
+                | BufferEncoding
+                | null
+        ): Promise<string[]>;
+        /**
+         * Asynchronous readdir(3) - read a directory.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(
+            path: PathLike,
+            options:
+                | 'buffer'
+                | {
+                      encoding: 'buffer';
+                      withFileTypes?: false | undefined;
+                  }
+        ): Promise<Buffer[]>;
+        /**
+         * Asynchronous readdir(3) - read a directory.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(
+            path: PathLike,
+            options?:
+                | (ObjectEncodingOptions & {
+                      withFileTypes?: false | undefined;
+                  })
+                | BufferEncoding
+                | null
+        ): Promise<string[] | Buffer[]>;
+        /**
+         * Asynchronous readdir(3) - read a directory.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options If called with `withFileTypes: true` the result data will be an array of Dirent
+         */
+        function __promisify__(
+            path: PathLike,
+            options: ObjectEncodingOptions & {
+                withFileTypes: true;
+            }
+        ): Promise<Dirent[]>;
+    }
+    /**
+     * Reads the contents of the directory.
+     *
+     * See the POSIX [`readdir(3)`](http://man7.org/linux/man-pages/man3/readdir.3.html) documentation for more details.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use for
+     * the filenames returned. If the `encoding` is set to `'buffer'`,
+     * the filenames returned will be passed as `Buffer` objects.
+     *
+     * If `options.withFileTypes` is set to `true`, the result will contain `fs.Dirent` objects.
+     * @since v0.1.21
+     */
+    export function readdirSync(
+        path: PathLike,
+        options?:
+            | {
+                  encoding: BufferEncoding | null;
+                  withFileTypes?: false | undefined;
+              }
+            | BufferEncoding
+            | null
+    ): string[];
+    /**
+     * Synchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function readdirSync(
+        path: PathLike,
+        options:
+            | {
+                  encoding: 'buffer';
+                  withFileTypes?: false | undefined;
+              }
+            | 'buffer'
+    ): Buffer[];
+    /**
+     * Synchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function readdirSync(
+        path: PathLike,
+        options?:
+            | (ObjectEncodingOptions & {
+                  withFileTypes?: false | undefined;
+              })
+            | BufferEncoding
+            | null
+    ): string[] | Buffer[];
+    /**
+     * Synchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options If called with `withFileTypes: true` the result data will be an array of Dirent.
+     */
+    export function readdirSync(
+        path: PathLike,
+        options: ObjectEncodingOptions & {
+            withFileTypes: true;
+        }
+    ): Dirent[];
+    /**
+     * Closes the file descriptor. No arguments other than a possible exception are
+     * given to the completion callback.
+     *
+     * Calling `fs.close()` on any file descriptor (`fd`) that is currently in use
+     * through any other `fs` operation may lead to undefined behavior.
+     *
+     * See the POSIX [`close(2)`](http://man7.org/linux/man-pages/man2/close.2.html) documentation for more detail.
+     * @since v0.0.2
+     */
+    export function close(fd: number, callback?: NoParamCallback): void;
+    export namespace close {
+        /**
+         * Asynchronous close(2) - close a file descriptor.
+         * @param fd A file descriptor.
+         */
+        function __promisify__(fd: number): Promise<void>;
+    }
+    /**
+     * Closes the file descriptor. Returns `undefined`.
+     *
+     * Calling `fs.closeSync()` on any file descriptor (`fd`) that is currently in use
+     * through any other `fs` operation may lead to undefined behavior.
+     *
+     * See the POSIX [`close(2)`](http://man7.org/linux/man-pages/man2/close.2.html) documentation for more detail.
+     * @since v0.1.21
+     */
+    export function closeSync(fd: number): void;
+    /**
+     * Asynchronous file open. See the POSIX [`open(2)`](http://man7.org/linux/man-pages/man2/open.2.html) documentation for more details.
+     *
+     * `mode` sets the file mode (permission and sticky bits), but only if the file was
+     * created. On Windows, only the write permission can be manipulated; see {@link chmod}.
+     *
+     * The callback gets two arguments `(err, fd)`.
+     *
+     * Some characters (`< > : " / \ | ? *`) are reserved under Windows as documented
+     * by [Naming Files, Paths, and Namespaces](https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file). Under NTFS, if the filename contains
+     * a colon, Node.js will open a file system stream, as described by [this MSDN page](https://docs.microsoft.com/en-us/windows/desktop/FileIO/using-streams).
+     *
+     * Functions based on `fs.open()` exhibit this behavior as well:`fs.writeFile()`, `fs.readFile()`, etc.
+     * @since v0.0.2
+     * @param [flags='r'] See `support of file system `flags``.
+     * @param [mode=0o666]
+     */
+    export function open(path: PathLike, flags: OpenMode | undefined, mode: Mode | undefined | null, callback: (err: NodeJS.ErrnoException | null, fd: number) => void): void;
+    /**
+     * Asynchronous open(2) - open and possibly create a file. If the file is created, its mode will be `0o666`.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param [flags='r'] See `support of file system `flags``.
+     */
+    export function open(path: PathLike, flags: OpenMode | undefined, callback: (err: NodeJS.ErrnoException | null, fd: number) => void): void;
+    /**
+     * Asynchronous open(2) - open and possibly create a file. If the file is created, its mode will be `0o666`.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function open(path: PathLike, callback: (err: NodeJS.ErrnoException | null, fd: number) => void): void;
+
+    export namespace open {
+        /**
+         * Asynchronous open(2) - open and possibly create a file.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param mode A file mode. If a string is passed, it is parsed as an octal integer. If not supplied, defaults to `0o666`.
+         */
+        function __promisify__(path: PathLike, flags: OpenMode, mode?: Mode | null): Promise<number>;
+    }
+    /**
+     * Returns an integer representing the file descriptor.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link open}.
+     * @since v0.1.21
+     * @param [flags='r']
+     * @param [mode=0o666]
+     */
+    export function openSync(path: PathLike, flags: OpenMode, mode?: Mode | null): number;
+    /**
+     * Change the file system timestamps of the object referenced by `path`.
+     *
+     * The `atime` and `mtime` arguments follow these rules:
+     *
+     * * Values can be either numbers representing Unix epoch time in seconds,`Date`s, or a numeric string like `'123456789.0'`.
+     * * If the value can not be converted to a number, or is `NaN`, `Infinity` or`-Infinity`, an `Error` will be thrown.
+     * @since v0.4.2
+     */
+    export function utimes(path: PathLike, atime: TimeLike, mtime: TimeLike, callback: NoParamCallback): void;
+    export namespace utimes {
+        /**
+         * Asynchronously change file timestamps of the file referenced by the supplied path.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param atime The last access time. If a string is provided, it will be coerced to number.
+         * @param mtime The last modified time. If a string is provided, it will be coerced to number.
+         */
+        function __promisify__(path: PathLike, atime: TimeLike, mtime: TimeLike): Promise<void>;
+    }
+    /**
+     * Returns `undefined`.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link utimes}.
+     * @since v0.4.2
+     */
+    export function utimesSync(path: PathLike, atime: TimeLike, mtime: TimeLike): void;
+    /**
+     * Change the file system timestamps of the object referenced by the supplied file
+     * descriptor. See {@link utimes}.
+     * @since v0.4.2
+     */
+    export function futimes(fd: number, atime: TimeLike, mtime: TimeLike, callback: NoParamCallback): void;
+    export namespace futimes {
+        /**
+         * Asynchronously change file timestamps of the file referenced by the supplied file descriptor.
+         * @param fd A file descriptor.
+         * @param atime The last access time. If a string is provided, it will be coerced to number.
+         * @param mtime The last modified time. If a string is provided, it will be coerced to number.
+         */
+        function __promisify__(fd: number, atime: TimeLike, mtime: TimeLike): Promise<void>;
+    }
+    /**
+     * Synchronous version of {@link futimes}. Returns `undefined`.
+     * @since v0.4.2
+     */
+    export function futimesSync(fd: number, atime: TimeLike, mtime: TimeLike): void;
+    /**
+     * Request that all data for the open file descriptor is flushed to the storage
+     * device. The specific implementation is operating system and device specific.
+     * Refer to the POSIX [`fsync(2)`](http://man7.org/linux/man-pages/man2/fsync.2.html) documentation for more detail. No arguments other
+     * than a possible exception are given to the completion callback.
+     * @since v0.1.96
+     */
+    export function fsync(fd: number, callback: NoParamCallback): void;
+    export namespace fsync {
+        /**
+         * Asynchronous fsync(2) - synchronize a file's in-core state with the underlying storage device.
+         * @param fd A file descriptor.
+         */
+        function __promisify__(fd: number): Promise<void>;
+    }
+    /**
+     * Request that all data for the open file descriptor is flushed to the storage
+     * device. The specific implementation is operating system and device specific.
+     * Refer to the POSIX [`fsync(2)`](http://man7.org/linux/man-pages/man2/fsync.2.html) documentation for more detail. Returns `undefined`.
+     * @since v0.1.96
+     */
+    export function fsyncSync(fd: number): void;
+    /**
+     * Write `buffer` to the file specified by `fd`.
+     *
+     * `offset` determines the part of the buffer to be written, and `length` is
+     * an integer specifying the number of bytes to write.
+     *
+     * `position` refers to the offset from the beginning of the file where this data
+     * should be written. If `typeof position !== 'number'`, the data will be written
+     * at the current position. See [`pwrite(2)`](http://man7.org/linux/man-pages/man2/pwrite.2.html).
+     *
+     * The callback will be given three arguments `(err, bytesWritten, buffer)` where`bytesWritten` specifies how many _bytes_ were written from `buffer`.
+     *
+     * If this method is invoked as its `util.promisify()` ed version, it returns
+     * a promise for an `Object` with `bytesWritten` and `buffer` properties.
+     *
+     * It is unsafe to use `fs.write()` multiple times on the same file without waiting
+     * for the callback. For this scenario, {@link createWriteStream} is
+     * recommended.
+     *
+     * On Linux, positional writes don't work when the file is opened in append mode.
+     * The kernel ignores the position argument and always appends the data to
+     * the end of the file.
+     * @since v0.0.2
+     */
+    export function write<TBuffer extends NodeJS.ArrayBufferView>(
+        fd: number,
+        buffer: TBuffer,
+        offset: number | undefined | null,
+        length: number | undefined | null,
+        position: number | undefined | null,
+        callback: (err: NodeJS.ErrnoException | null, written: number, buffer: TBuffer) => void
+    ): void;
+    /**
+     * Asynchronously writes `buffer` to the file referenced by the supplied file descriptor.
+     * @param fd A file descriptor.
+     * @param offset The part of the buffer to be written. If not supplied, defaults to `0`.
+     * @param length The number of bytes to write. If not supplied, defaults to `buffer.length - offset`.
+     */
+    export function write<TBuffer extends NodeJS.ArrayBufferView>(
+        fd: number,
+        buffer: TBuffer,
+        offset: number | undefined | null,
+        length: number | undefined | null,
+        callback: (err: NodeJS.ErrnoException | null, written: number, buffer: TBuffer) => void
+    ): void;
+    /**
+     * Asynchronously writes `buffer` to the file referenced by the supplied file descriptor.
+     * @param fd A file descriptor.
+     * @param offset The part of the buffer to be written. If not supplied, defaults to `0`.
+     */
+    export function write<TBuffer extends NodeJS.ArrayBufferView>(
+        fd: number,
+        buffer: TBuffer,
+        offset: number | undefined | null,
+        callback: (err: NodeJS.ErrnoException | null, written: number, buffer: TBuffer) => void
+    ): void;
+    /**
+     * Asynchronously writes `buffer` to the file referenced by the supplied file descriptor.
+     * @param fd A file descriptor.
+     */
+    export function write<TBuffer extends NodeJS.ArrayBufferView>(fd: number, buffer: TBuffer, callback: (err: NodeJS.ErrnoException | null, written: number, buffer: TBuffer) => void): void;
+    /**
+     * Asynchronously writes `string` to the file referenced by the supplied file descriptor.
+     * @param fd A file descriptor.
+     * @param string A string to write.
+     * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position.
+     * @param encoding The expected string encoding.
+     */
+    export function write(
+        fd: number,
+        string: string,
+        position: number | undefined | null,
+        encoding: BufferEncoding | undefined | null,
+        callback: (err: NodeJS.ErrnoException | null, written: number, str: string) => void
+    ): void;
+    /**
+     * Asynchronously writes `string` to the file referenced by the supplied file descriptor.
+     * @param fd A file descriptor.
+     * @param string A string to write.
+     * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position.
+     */
+    export function write(fd: number, string: string, position: number | undefined | null, callback: (err: NodeJS.ErrnoException | null, written: number, str: string) => void): void;
+    /**
+     * Asynchronously writes `string` to the file referenced by the supplied file descriptor.
+     * @param fd A file descriptor.
+     * @param string A string to write.
+     */
+    export function write(fd: number, string: string, callback: (err: NodeJS.ErrnoException | null, written: number, str: string) => void): void;
+    export namespace write {
+        /**
+         * Asynchronously writes `buffer` to the file referenced by the supplied file descriptor.
+         * @param fd A file descriptor.
+         * @param offset The part of the buffer to be written. If not supplied, defaults to `0`.
+         * @param length The number of bytes to write. If not supplied, defaults to `buffer.length - offset`.
+         * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position.
+         */
+        function __promisify__<TBuffer extends NodeJS.ArrayBufferView>(
+            fd: number,
+            buffer?: TBuffer,
+            offset?: number,
+            length?: number,
+            position?: number | null
+        ): Promise<{
+            bytesWritten: number;
+            buffer: TBuffer;
+        }>;
+        /**
+         * Asynchronously writes `string` to the file referenced by the supplied file descriptor.
+         * @param fd A file descriptor.
+         * @param string A string to write.
+         * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position.
+         * @param encoding The expected string encoding.
+         */
+        function __promisify__(
+            fd: number,
+            string: string,
+            position?: number | null,
+            encoding?: BufferEncoding | null
+        ): Promise<{
+            bytesWritten: number;
+            buffer: string;
+        }>;
+    }
+    /**
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link write}.
+     * @since v0.1.21
+     * @return The number of bytes written.
+     */
+    export function writeSync(fd: number, buffer: NodeJS.ArrayBufferView, offset?: number | null, length?: number | null, position?: number | null): number;
+    /**
+     * Synchronously writes `string` to the file referenced by the supplied file descriptor, returning the number of bytes written.
+     * @param fd A file descriptor.
+     * @param string A string to write.
+     * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position.
+     * @param encoding The expected string encoding.
+     */
+    export function writeSync(fd: number, string: string, position?: number | null, encoding?: BufferEncoding | null): number;
+    export type ReadPosition = number | bigint;
+    export interface ReadSyncOptions {
+        /**
+         * @default 0
+         */
+        offset?: number | undefined;
+        /**
+         * @default `length of buffer`
+         */
+        length?: number | undefined;
+        /**
+         * @default null
+         */
+        position?: ReadPosition | null | undefined;
+    }
+    export interface ReadAsyncOptions<TBuffer extends NodeJS.ArrayBufferView> extends ReadSyncOptions {
+        buffer?: TBuffer;
+    }
+    /**
+     * Read data from the file specified by `fd`.
+     *
+     * The callback is given the three arguments, `(err, bytesRead, buffer)`.
+     *
+     * If the file is not modified concurrently, the end-of-file is reached when the
+     * number of bytes read is zero.
+     *
+     * If this method is invoked as its `util.promisify()` ed version, it returns
+     * a promise for an `Object` with `bytesRead` and `buffer` properties.
+     * @since v0.0.2
+     * @param buffer The buffer that the data will be written to.
+     * @param offset The position in `buffer` to write the data to.
+     * @param length The number of bytes to read.
+     * @param position Specifies where to begin reading from in the file. If `position` is `null` or `-1 `, data will be read from the current file position, and the file position will be updated. If
+     * `position` is an integer, the file position will be unchanged.
+     */
+    export function read<TBuffer extends NodeJS.ArrayBufferView>(
+        fd: number,
+        buffer: TBuffer,
+        offset: number,
+        length: number,
+        position: ReadPosition | null,
+        callback: (err: NodeJS.ErrnoException | null, bytesRead: number, buffer: TBuffer) => void
+    ): void;
+    /**
+     * Similar to the above `fs.read` function, this version takes an optional `options` object.
+     * If not otherwise specified in an `options` object,
+     * `buffer` defaults to `Buffer.alloc(16384)`,
+     * `offset` defaults to `0`,
+     * `length` defaults to `buffer.byteLength`, `- offset` as of Node 17.6.0
+     * `position` defaults to `null`
+     * @since v12.17.0, 13.11.0
+     */
+    export function read<TBuffer extends NodeJS.ArrayBufferView>(
+        fd: number,
+        options: ReadAsyncOptions<TBuffer>,
+        callback: (err: NodeJS.ErrnoException | null, bytesRead: number, buffer: TBuffer) => void
+    ): void;
+    export function read(fd: number, callback: (err: NodeJS.ErrnoException | null, bytesRead: number, buffer: NodeJS.ArrayBufferView) => void): void;
+    export namespace read {
+        /**
+         * @param fd A file descriptor.
+         * @param buffer The buffer that the data will be written to.
+         * @param offset The offset in the buffer at which to start writing.
+         * @param length The number of bytes to read.
+         * @param position The offset from the beginning of the file from which data should be read. If `null`, data will be read from the current position.
+         */
+        function __promisify__<TBuffer extends NodeJS.ArrayBufferView>(
+            fd: number,
+            buffer: TBuffer,
+            offset: number,
+            length: number,
+            position: number | null
+        ): Promise<{
+            bytesRead: number;
+            buffer: TBuffer;
+        }>;
+        function __promisify__<TBuffer extends NodeJS.ArrayBufferView>(
+            fd: number,
+            options: ReadAsyncOptions<TBuffer>
+        ): Promise<{
+            bytesRead: number;
+            buffer: TBuffer;
+        }>;
+        function __promisify__(fd: number): Promise<{
+            bytesRead: number;
+            buffer: NodeJS.ArrayBufferView;
+        }>;
+    }
+    /**
+     * Returns the number of `bytesRead`.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link read}.
+     * @since v0.1.21
+     */
+    export function readSync(fd: number, buffer: NodeJS.ArrayBufferView, offset: number, length: number, position: ReadPosition | null): number;
+    /**
+     * Similar to the above `fs.readSync` function, this version takes an optional `options` object.
+     * If no `options` object is specified, it will default with the above values.
+     */
+    export function readSync(fd: number, buffer: NodeJS.ArrayBufferView, opts?: ReadSyncOptions): number;
+    /**
+     * Asynchronously reads the entire contents of a file.
+     *
+     * ```js
+     * import { readFile } from 'fs';
+     *
+     * readFile('/etc/passwd', (err, data) => {
+     *   if (err) throw err;
+     *   console.log(data);
+     * });
+     * ```
+     *
+     * The callback is passed two arguments `(err, data)`, where `data` is the
+     * contents of the file.
+     *
+     * If no encoding is specified, then the raw buffer is returned.
+     *
+     * If `options` is a string, then it specifies the encoding:
+     *
+     * ```js
+     * import { readFile } from 'fs';
+     *
+     * readFile('/etc/passwd', 'utf8', callback);
+     * ```
+     *
+     * When the path is a directory, the behavior of `fs.readFile()` and {@link readFileSync} is platform-specific. On macOS, Linux, and Windows, an
+     * error will be returned. On FreeBSD, a representation of the directory's contents
+     * will be returned.
+     *
+     * ```js
+     * import { readFile } from 'fs';
+     *
+     * // macOS, Linux, and Windows
+     * readFile('<directory>', (err, data) => {
+     *   // => [Error: EISDIR: illegal operation on a directory, read <directory>]
+     * });
+     *
+     * //  FreeBSD
+     * readFile('<directory>', (err, data) => {
+     *   // => null, <data>
+     * });
+     * ```
+     *
+     * It is possible to abort an ongoing request using an `AbortSignal`. If a
+     * request is aborted the callback is called with an `AbortError`:
+     *
+     * ```js
+     * import { readFile } from 'fs';
+     *
+     * const controller = new AbortController();
+     * const signal = controller.signal;
+     * readFile(fileInfo[0].name, { signal }, (err, buf) => {
+     *   // ...
+     * });
+     * // When you want to abort the request
+     * controller.abort();
+     * ```
+     *
+     * The `fs.readFile()` function buffers the entire file. To minimize memory costs,
+     * when possible prefer streaming via `fs.createReadStream()`.
+     *
+     * Aborting an ongoing request does not abort individual operating
+     * system requests but rather the internal buffering `fs.readFile` performs.
+     * @since v0.1.29
+     * @param path filename or file descriptor
+     */
+    export function readFile(
+        path: PathOrFileDescriptor,
+        options:
+            | ({
+                  encoding?: null | undefined;
+                  flag?: string | undefined;
+              } & Abortable)
+            | undefined
+            | null,
+        callback: (err: NodeJS.ErrnoException | null, data: Buffer) => void
+    ): void;
+    /**
+     * Asynchronously reads the entire contents of a file.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+     * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag.
+     * If a flag is not provided, it defaults to `'r'`.
+     */
+    export function readFile(
+        path: PathOrFileDescriptor,
+        options:
+            | ({
+                  encoding: BufferEncoding;
+                  flag?: string | undefined;
+              } & Abortable)
+            | BufferEncoding,
+        callback: (err: NodeJS.ErrnoException | null, data: string) => void
+    ): void;
+    /**
+     * Asynchronously reads the entire contents of a file.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+     * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag.
+     * If a flag is not provided, it defaults to `'r'`.
+     */
+    export function readFile(
+        path: PathOrFileDescriptor,
+        options:
+            | (ObjectEncodingOptions & {
+                  flag?: string | undefined;
+              } & Abortable)
+            | BufferEncoding
+            | undefined
+            | null,
+        callback: (err: NodeJS.ErrnoException | null, data: string | Buffer) => void
+    ): void;
+    /**
+     * Asynchronously reads the entire contents of a file.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+     */
+    export function readFile(path: PathOrFileDescriptor, callback: (err: NodeJS.ErrnoException | null, data: Buffer) => void): void;
+    export namespace readFile {
+        /**
+         * Asynchronously reads the entire contents of a file.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+         * @param options An object that may contain an optional flag.
+         * If a flag is not provided, it defaults to `'r'`.
+         */
+        function __promisify__(
+            path: PathOrFileDescriptor,
+            options?: {
+                encoding?: null | undefined;
+                flag?: string | undefined;
+            } | null
+        ): Promise<Buffer>;
+        /**
+         * Asynchronously reads the entire contents of a file.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * URL support is _experimental_.
+         * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+         * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag.
+         * If a flag is not provided, it defaults to `'r'`.
+         */
+        function __promisify__(
+            path: PathOrFileDescriptor,
+            options:
+                | {
+                      encoding: BufferEncoding;
+                      flag?: string | undefined;
+                  }
+                | BufferEncoding
+        ): Promise<string>;
+        /**
+         * Asynchronously reads the entire contents of a file.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * URL support is _experimental_.
+         * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+         * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag.
+         * If a flag is not provided, it defaults to `'r'`.
+         */
+        function __promisify__(
+            path: PathOrFileDescriptor,
+            options?:
+                | (ObjectEncodingOptions & {
+                      flag?: string | undefined;
+                  })
+                | BufferEncoding
+                | null
+        ): Promise<string | Buffer>;
+    }
+    /**
+     * Returns the contents of the `path`.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link readFile}.
+     *
+     * If the `encoding` option is specified then this function returns a
+     * string. Otherwise it returns a buffer.
+     *
+     * Similar to {@link readFile}, when the path is a directory, the behavior of`fs.readFileSync()` is platform-specific.
+     *
+     * ```js
+     * import { readFileSync } from 'fs';
+     *
+     * // macOS, Linux, and Windows
+     * readFileSync('<directory>');
+     * // => [Error: EISDIR: illegal operation on a directory, read <directory>]
+     *
+     * //  FreeBSD
+     * readFileSync('<directory>'); // => <data>
+     * ```
+     * @since v0.1.8
+     * @param path filename or file descriptor
+     */
+    export function readFileSync(
+        path: PathOrFileDescriptor,
+        options?: {
+            encoding?: null | undefined;
+            flag?: string | undefined;
+        } | null
+    ): Buffer;
+    /**
+     * Synchronously reads the entire contents of a file.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+     * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag.
+     * If a flag is not provided, it defaults to `'r'`.
+     */
+    export function readFileSync(
+        path: PathOrFileDescriptor,
+        options:
+            | {
+                  encoding: BufferEncoding;
+                  flag?: string | undefined;
+              }
+            | BufferEncoding
+    ): string;
+    /**
+     * Synchronously reads the entire contents of a file.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+     * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag.
+     * If a flag is not provided, it defaults to `'r'`.
+     */
+    export function readFileSync(
+        path: PathOrFileDescriptor,
+        options?:
+            | (ObjectEncodingOptions & {
+                  flag?: string | undefined;
+              })
+            | BufferEncoding
+            | null
+    ): string | Buffer;
+    export type WriteFileOptions =
+        | (ObjectEncodingOptions &
+              Abortable & {
+                  mode?: Mode | undefined;
+                  flag?: string | undefined;
+              })
+        | BufferEncoding
+        | null;
+    /**
+     * When `file` is a filename, asynchronously writes data to the file, replacing the
+     * file if it already exists. `data` can be a string or a buffer.
+     *
+     * When `file` is a file descriptor, the behavior is similar to calling`fs.write()` directly (which is recommended). See the notes below on using
+     * a file descriptor.
+     *
+     * The `encoding` option is ignored if `data` is a buffer.
+     *
+     * The `mode` option only affects the newly created file. See {@link open} for more details.
+     *
+     * ```js
+     * import { writeFile } from 'fs';
+     * import { Buffer } from 'buffer';
+     *
+     * const data = new Uint8Array(Buffer.from('Hello Node.js'));
+     * writeFile('message.txt', data, (err) => {
+     *   if (err) throw err;
+     *   console.log('The file has been saved!');
+     * });
+     * ```
+     *
+     * If `options` is a string, then it specifies the encoding:
+     *
+     * ```js
+     * import { writeFile } from 'fs';
+     *
+     * writeFile('message.txt', 'Hello Node.js', 'utf8', callback);
+     * ```
+     *
+     * It is unsafe to use `fs.writeFile()` multiple times on the same file without
+     * waiting for the callback. For this scenario, {@link createWriteStream} is
+     * recommended.
+     *
+     * Similarly to `fs.readFile` \- `fs.writeFile` is a convenience method that
+     * performs multiple `write` calls internally to write the buffer passed to it.
+     * For performance sensitive code consider using {@link createWriteStream}.
+     *
+     * It is possible to use an `AbortSignal` to cancel an `fs.writeFile()`.
+     * Cancelation is "best effort", and some amount of data is likely still
+     * to be written.
+     *
+     * ```js
+     * import { writeFile } from 'fs';
+     * import { Buffer } from 'buffer';
+     *
+     * const controller = new AbortController();
+     * const { signal } = controller;
+     * const data = new Uint8Array(Buffer.from('Hello Node.js'));
+     * writeFile('message.txt', data, { signal }, (err) => {
+     *   // When a request is aborted - the callback is called with an AbortError
+     * });
+     * // When the request should be aborted
+     * controller.abort();
+     * ```
+     *
+     * Aborting an ongoing request does not abort individual operating
+     * system requests but rather the internal buffering `fs.writeFile` performs.
+     * @since v0.1.29
+     * @param file filename or file descriptor
+     */
+    export function writeFile(file: PathOrFileDescriptor, data: string | NodeJS.ArrayBufferView, options: WriteFileOptions, callback: NoParamCallback): void;
+    /**
+     * Asynchronously writes data to a file, replacing the file if it already exists.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+     * @param data The data to write. If something other than a Buffer or Uint8Array is provided, the value is coerced to a string.
+     */
+    export function writeFile(path: PathOrFileDescriptor, data: string | NodeJS.ArrayBufferView, callback: NoParamCallback): void;
+    export namespace writeFile {
+        /**
+         * Asynchronously writes data to a file, replacing the file if it already exists.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * URL support is _experimental_.
+         * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+         * @param data The data to write. If something other than a Buffer or Uint8Array is provided, the value is coerced to a string.
+         * @param options Either the encoding for the file, or an object optionally specifying the encoding, file mode, and flag.
+         * If `encoding` is not supplied, the default of `'utf8'` is used.
+         * If `mode` is not supplied, the default of `0o666` is used.
+         * If `mode` is a string, it is parsed as an octal integer.
+         * If `flag` is not supplied, the default of `'w'` is used.
+         */
+        function __promisify__(path: PathOrFileDescriptor, data: string | NodeJS.ArrayBufferView, options?: WriteFileOptions): Promise<void>;
+    }
+    /**
+     * Returns `undefined`.
+     *
+     * The `mode` option only affects the newly created file. See {@link open} for more details.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link writeFile}.
+     * @since v0.1.29
+     * @param file filename or file descriptor
+     */
+    export function writeFileSync(file: PathOrFileDescriptor, data: string | NodeJS.ArrayBufferView, options?: WriteFileOptions): void;
+    /**
+     * Asynchronously append data to a file, creating the file if it does not yet
+     * exist. `data` can be a string or a `Buffer`.
+     *
+     * The `mode` option only affects the newly created file. See {@link open} for more details.
+     *
+     * ```js
+     * import { appendFile } from 'fs';
+     *
+     * appendFile('message.txt', 'data to append', (err) => {
+     *   if (err) throw err;
+     *   console.log('The "data to append" was appended to file!');
+     * });
+     * ```
+     *
+     * If `options` is a string, then it specifies the encoding:
+     *
+     * ```js
+     * import { appendFile } from 'fs';
+     *
+     * appendFile('message.txt', 'data to append', 'utf8', callback);
+     * ```
+     *
+     * The `path` may be specified as a numeric file descriptor that has been opened
+     * for appending (using `fs.open()` or `fs.openSync()`). The file descriptor will
+     * not be closed automatically.
+     *
+     * ```js
+     * import { open, close, appendFile } from 'fs';
+     *
+     * function closeFd(fd) {
+     *   close(fd, (err) => {
+     *     if (err) throw err;
+     *   });
+     * }
+     *
+     * open('message.txt', 'a', (err, fd) => {
+     *   if (err) throw err;
+     *
+     *   try {
+     *     appendFile(fd, 'data to append', 'utf8', (err) => {
+     *       closeFd(fd);
+     *       if (err) throw err;
+     *     });
+     *   } catch (err) {
+     *     closeFd(fd);
+     *     throw err;
+     *   }
+     * });
+     * ```
+     * @since v0.6.7
+     * @param path filename or file descriptor
+     */
+    export function appendFile(path: PathOrFileDescriptor, data: string | Uint8Array, options: WriteFileOptions, callback: NoParamCallback): void;
+    /**
+     * Asynchronously append data to a file, creating the file if it does not exist.
+     * @param file A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+     * @param data The data to write. If something other than a Buffer or Uint8Array is provided, the value is coerced to a string.
+     */
+    export function appendFile(file: PathOrFileDescriptor, data: string | Uint8Array, callback: NoParamCallback): void;
+    export namespace appendFile {
+        /**
+         * Asynchronously append data to a file, creating the file if it does not exist.
+         * @param file A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * URL support is _experimental_.
+         * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+         * @param data The data to write. If something other than a Buffer or Uint8Array is provided, the value is coerced to a string.
+         * @param options Either the encoding for the file, or an object optionally specifying the encoding, file mode, and flag.
+         * If `encoding` is not supplied, the default of `'utf8'` is used.
+         * If `mode` is not supplied, the default of `0o666` is used.
+         * If `mode` is a string, it is parsed as an octal integer.
+         * If `flag` is not supplied, the default of `'a'` is used.
+         */
+        function __promisify__(file: PathOrFileDescriptor, data: string | Uint8Array, options?: WriteFileOptions): Promise<void>;
+    }
+    /**
+     * Synchronously append data to a file, creating the file if it does not yet
+     * exist. `data` can be a string or a `Buffer`.
+     *
+     * The `mode` option only affects the newly created file. See {@link open} for more details.
+     *
+     * ```js
+     * import { appendFileSync } from 'fs';
+     *
+     * try {
+     *   appendFileSync('message.txt', 'data to append');
+     *   console.log('The "data to append" was appended to file!');
+     * } catch (err) {
+     *   // Handle the error
+     * }
+     * ```
+     *
+     * If `options` is a string, then it specifies the encoding:
+     *
+     * ```js
+     * import { appendFileSync } from 'fs';
+     *
+     * appendFileSync('message.txt', 'data to append', 'utf8');
+     * ```
+     *
+     * The `path` may be specified as a numeric file descriptor that has been opened
+     * for appending (using `fs.open()` or `fs.openSync()`). The file descriptor will
+     * not be closed automatically.
+     *
+     * ```js
+     * import { openSync, closeSync, appendFileSync } from 'fs';
+     *
+     * let fd;
+     *
+     * try {
+     *   fd = openSync('message.txt', 'a');
+     *   appendFileSync(fd, 'data to append', 'utf8');
+     * } catch (err) {
+     *   // Handle the error
+     * } finally {
+     *   if (fd !== undefined)
+     *     closeSync(fd);
+     * }
+     * ```
+     * @since v0.6.7
+     * @param path filename or file descriptor
+     */
+    export function appendFileSync(path: PathOrFileDescriptor, data: string | Uint8Array, options?: WriteFileOptions): void;
+    /**
+     * Watch for changes on `filename`. The callback `listener` will be called each
+     * time the file is accessed.
+     *
+     * The `options` argument may be omitted. If provided, it should be an object. The`options` object may contain a boolean named `persistent` that indicates
+     * whether the process should continue to run as long as files are being watched.
+     * The `options` object may specify an `interval` property indicating how often the
+     * target should be polled in milliseconds.
+     *
+     * The `listener` gets two arguments the current stat object and the previous
+     * stat object:
+     *
+     * ```js
+     * import { watchFile } from 'fs';
+     *
+     * watchFile('message.text', (curr, prev) => {
+     *   console.log(`the current mtime is: ${curr.mtime}`);
+     *   console.log(`the previous mtime was: ${prev.mtime}`);
+     * });
+     * ```
+     *
+     * These stat objects are instances of `fs.Stat`. If the `bigint` option is `true`,
+     * the numeric values in these objects are specified as `BigInt`s.
+     *
+     * To be notified when the file was modified, not just accessed, it is necessary
+     * to compare `curr.mtimeMs` and `prev.mtimeMs`.
+     *
+     * When an `fs.watchFile` operation results in an `ENOENT` error, it
+     * will invoke the listener once, with all the fields zeroed (or, for dates, the
+     * Unix Epoch). If the file is created later on, the listener will be called
+     * again, with the latest stat objects. This is a change in functionality since
+     * v0.10.
+     *
+     * Using {@link watch} is more efficient than `fs.watchFile` and`fs.unwatchFile`. `fs.watch` should be used instead of `fs.watchFile` and`fs.unwatchFile` when possible.
+     *
+     * When a file being watched by `fs.watchFile()` disappears and reappears,
+     * then the contents of `previous` in the second callback event (the file's
+     * reappearance) will be the same as the contents of `previous` in the first
+     * callback event (its disappearance).
+     *
+     * This happens when:
+     *
+     * * the file is deleted, followed by a restore
+     * * the file is renamed and then renamed a second time back to its original name
+     * @since v0.1.31
+     */
+    export interface WatchFileOptions {
+        bigint?: boolean | undefined;
+        persistent?: boolean | undefined;
+        interval?: number | undefined;
+    }
+    /**
+     * Watch for changes on `filename`. The callback `listener` will be called each
+     * time the file is accessed.
+     *
+     * The `options` argument may be omitted. If provided, it should be an object. The`options` object may contain a boolean named `persistent` that indicates
+     * whether the process should continue to run as long as files are being watched.
+     * The `options` object may specify an `interval` property indicating how often the
+     * target should be polled in milliseconds.
+     *
+     * The `listener` gets two arguments the current stat object and the previous
+     * stat object:
+     *
+     * ```js
+     * import { watchFile } from 'fs';
+     *
+     * watchFile('message.text', (curr, prev) => {
+     *   console.log(`the current mtime is: ${curr.mtime}`);
+     *   console.log(`the previous mtime was: ${prev.mtime}`);
+     * });
+     * ```
+     *
+     * These stat objects are instances of `fs.Stat`. If the `bigint` option is `true`,
+     * the numeric values in these objects are specified as `BigInt`s.
+     *
+     * To be notified when the file was modified, not just accessed, it is necessary
+     * to compare `curr.mtimeMs` and `prev.mtimeMs`.
+     *
+     * When an `fs.watchFile` operation results in an `ENOENT` error, it
+     * will invoke the listener once, with all the fields zeroed (or, for dates, the
+     * Unix Epoch). If the file is created later on, the listener will be called
+     * again, with the latest stat objects. This is a change in functionality since
+     * v0.10.
+     *
+     * Using {@link watch} is more efficient than `fs.watchFile` and`fs.unwatchFile`. `fs.watch` should be used instead of `fs.watchFile` and`fs.unwatchFile` when possible.
+     *
+     * When a file being watched by `fs.watchFile()` disappears and reappears,
+     * then the contents of `previous` in the second callback event (the file's
+     * reappearance) will be the same as the contents of `previous` in the first
+     * callback event (its disappearance).
+     *
+     * This happens when:
+     *
+     * * the file is deleted, followed by a restore
+     * * the file is renamed and then renamed a second time back to its original name
+     * @since v0.1.31
+     */
+    export function watchFile(
+        filename: PathLike,
+        options:
+            | (WatchFileOptions & {
+                  bigint?: false | undefined;
+              })
+            | undefined,
+        listener: (curr: Stats, prev: Stats) => void
+    ): StatWatcher;
+    export function watchFile(
+        filename: PathLike,
+        options:
+            | (WatchFileOptions & {
+                  bigint: true;
+              })
+            | undefined,
+        listener: (curr: BigIntStats, prev: BigIntStats) => void
+    ): StatWatcher;
+    /**
+     * Watch for changes on `filename`. The callback `listener` will be called each time the file is accessed.
+     * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function watchFile(filename: PathLike, listener: (curr: Stats, prev: Stats) => void): StatWatcher;
+    /**
+     * Stop watching for changes on `filename`. If `listener` is specified, only that
+     * particular listener is removed. Otherwise, _all_ listeners are removed,
+     * effectively stopping watching of `filename`.
+     *
+     * Calling `fs.unwatchFile()` with a filename that is not being watched is a
+     * no-op, not an error.
+     *
+     * Using {@link watch} is more efficient than `fs.watchFile()` and`fs.unwatchFile()`. `fs.watch()` should be used instead of `fs.watchFile()`and `fs.unwatchFile()` when possible.
+     * @since v0.1.31
+     * @param listener Optional, a listener previously attached using `fs.watchFile()`
+     */
+    export function unwatchFile(filename: PathLike, listener?: (curr: Stats, prev: Stats) => void): void;
+    export interface WatchOptions extends Abortable {
+        encoding?: BufferEncoding | 'buffer' | undefined;
+        persistent?: boolean | undefined;
+        recursive?: boolean | undefined;
+    }
+    export type WatchEventType = 'rename' | 'change';
+    export type WatchListener<T> = (event: WatchEventType, filename: T) => void;
+    /**
+     * Watch for changes on `filename`, where `filename` is either a file or a
+     * directory.
+     *
+     * The second argument is optional. If `options` is provided as a string, it
+     * specifies the `encoding`. Otherwise `options` should be passed as an object.
+     *
+     * The listener callback gets two arguments `(eventType, filename)`. `eventType`is either `'rename'` or `'change'`, and `filename` is the name of the file
+     * which triggered the event.
+     *
+     * On most platforms, `'rename'` is emitted whenever a filename appears or
+     * disappears in the directory.
+     *
+     * The listener callback is attached to the `'change'` event fired by `fs.FSWatcher`, but it is not the same thing as the `'change'` value of`eventType`.
+     *
+     * If a `signal` is passed, aborting the corresponding AbortController will close
+     * the returned `fs.FSWatcher`.
+     * @since v0.5.10
+     * @param listener
+     */
+    export function watch(
+        filename: PathLike,
+        options:
+            | (WatchOptions & {
+                  encoding: 'buffer';
+              })
+            | 'buffer',
+        listener?: WatchListener<Buffer>
+    ): FSWatcher;
+    /**
+     * Watch for changes on `filename`, where `filename` is either a file or a directory, returning an `FSWatcher`.
+     * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the encoding for the filename provided to the listener, or an object optionally specifying encoding, persistent, and recursive options.
+     * If `encoding` is not supplied, the default of `'utf8'` is used.
+     * If `persistent` is not supplied, the default of `true` is used.
+     * If `recursive` is not supplied, the default of `false` is used.
+     */
+    export function watch(filename: PathLike, options?: WatchOptions | BufferEncoding | null, listener?: WatchListener<string>): FSWatcher;
+    /**
+     * Watch for changes on `filename`, where `filename` is either a file or a directory, returning an `FSWatcher`.
+     * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the encoding for the filename provided to the listener, or an object optionally specifying encoding, persistent, and recursive options.
+     * If `encoding` is not supplied, the default of `'utf8'` is used.
+     * If `persistent` is not supplied, the default of `true` is used.
+     * If `recursive` is not supplied, the default of `false` is used.
+     */
+    export function watch(filename: PathLike, options: WatchOptions | string, listener?: WatchListener<string | Buffer>): FSWatcher;
+    /**
+     * Watch for changes on `filename`, where `filename` is either a file or a directory, returning an `FSWatcher`.
+     * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function watch(filename: PathLike, listener?: WatchListener<string>): FSWatcher;
+    /**
+     * Test whether or not the given path exists by checking with the file system.
+     * Then call the `callback` argument with either true or false:
+     *
+     * ```js
+     * import { exists } from 'fs';
+     *
+     * exists('/etc/passwd', (e) => {
+     *   console.log(e ? 'it exists' : 'no passwd!');
+     * });
+     * ```
+     *
+     * **The parameters for this callback are not consistent with other Node.js**
+     * **callbacks.** Normally, the first parameter to a Node.js callback is an `err`parameter, optionally followed by other parameters. The `fs.exists()` callback
+     * has only one boolean parameter. This is one reason `fs.access()` is recommended
+     * instead of `fs.exists()`.
+     *
+     * Using `fs.exists()` to check for the existence of a file before calling`fs.open()`, `fs.readFile()` or `fs.writeFile()` is not recommended. Doing
+     * so introduces a race condition, since other processes may change the file's
+     * state between the two calls. Instead, user code should open/read/write the
+     * file directly and handle the error raised if the file does not exist.
+     *
+     * **write (NOT RECOMMENDED)**
+     *
+     * ```js
+     * import { exists, open, close } from 'fs';
+     *
+     * exists('myfile', (e) => {
+     *   if (e) {
+     *     console.error('myfile already exists');
+     *   } else {
+     *     open('myfile', 'wx', (err, fd) => {
+     *       if (err) throw err;
+     *
+     *       try {
+     *         writeMyData(fd);
+     *       } finally {
+     *         close(fd, (err) => {
+     *           if (err) throw err;
+     *         });
+     *       }
+     *     });
+     *   }
+     * });
+     * ```
+     *
+     * **write (RECOMMENDED)**
+     *
+     * ```js
+     * import { open, close } from 'fs';
+     * open('myfile', 'wx', (err, fd) => {
+     *   if (err) {
+     *     if (err.code === 'EEXIST') {
+     *       console.error('myfile already exists');
+     *       return;
+     *     }
+     *
+     *     throw err;
+     *   }
+     *
+     *   try {
+     *     writeMyData(fd);
+     *   } finally {
+     *     close(fd, (err) => {
+     *       if (err) throw err;
+     *     });
+     *   }
+     * });
+     * ```
+     *
+     * **read (NOT RECOMMENDED)**
+     *
+     * ```js
+     * import { open, close, exists } from 'fs';
+     *
+     * exists('myfile', (e) => {
+     *   if (e) {
+     *     open('myfile', 'r', (err, fd) => {
+     *       if (err) throw err;
+     *
+     *       try {
+     *         readMyData(fd);
+     *       } finally {
+     *         close(fd, (err) => {
+     *           if (err) throw err;
+     *         });
+     *       }
+     *     });
+     *   } else {
+     *     console.error('myfile does not exist');
+     *   }
+     * });
+     * ```
+     *
+     * **read (RECOMMENDED)**
+     *
+     * ```js
+     * import { open, close } from 'fs';
+     *
+     * open('myfile', 'r', (err, fd) => {
+     *   if (err) {
+     *     if (err.code === 'ENOENT') {
+     *       console.error('myfile does not exist');
+     *       return;
+     *     }
+     *
+     *     throw err;
+     *   }
+     *
+     *   try {
+     *     readMyData(fd);
+     *   } finally {
+     *     close(fd, (err) => {
+     *       if (err) throw err;
+     *     });
+     *   }
+     * });
+     * ```
+     *
+     * The "not recommended" examples above check for existence and then use the
+     * file; the "recommended" examples are better because they use the file directly
+     * and handle the error, if any.
+     *
+     * In general, check for the existence of a file only if the file won’t be
+     * used directly, for example when its existence is a signal from another
+     * process.
+     * @since v0.0.2
+     * @deprecated Since v1.0.0 - Use {@link stat} or {@link access} instead.
+     */
+    export function exists(path: PathLike, callback: (exists: boolean) => void): void;
+    /** @deprecated */
+    export namespace exists {
+        /**
+         * @param path A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+         * URL support is _experimental_.
+         */
+        function __promisify__(path: PathLike): Promise<boolean>;
+    }
+    /**
+     * Returns `true` if the path exists, `false` otherwise.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link exists}.
+     *
+     * `fs.exists()` is deprecated, but `fs.existsSync()` is not. The `callback`parameter to `fs.exists()` accepts parameters that are inconsistent with other
+     * Node.js callbacks. `fs.existsSync()` does not use a callback.
+     *
+     * ```js
+     * import { existsSync } from 'fs';
+     *
+     * if (existsSync('/etc/passwd'))
+     *   console.log('The path exists.');
+     * ```
+     * @since v0.1.21
+     */
+    export function existsSync(path: PathLike): boolean;
+    export namespace constants {
+        // File Access Constants
+        /** Constant for fs.access(). File is visible to the calling process. */
+        const F_OK: number;
+        /** Constant for fs.access(). File can be read by the calling process. */
+        const R_OK: number;
+        /** Constant for fs.access(). File can be written by the calling process. */
+        const W_OK: number;
+        /** Constant for fs.access(). File can be executed by the calling process. */
+        const X_OK: number;
+        // File Copy Constants
+        /** Constant for fs.copyFile. Flag indicating the destination file should not be overwritten if it already exists. */
+        const COPYFILE_EXCL: number;
+        /**
+         * Constant for fs.copyFile. copy operation will attempt to create a copy-on-write reflink.
+         * If the underlying platform does not support copy-on-write, then a fallback copy mechanism is used.
+         */
+        const COPYFILE_FICLONE: number;
+        /**
+         * Constant for fs.copyFile. Copy operation will attempt to create a copy-on-write reflink.
+         * If the underlying platform does not support copy-on-write, then the operation will fail with an error.
+         */
+        const COPYFILE_FICLONE_FORCE: number;
+        // File Open Constants
+        /** Constant for fs.open(). Flag indicating to open a file for read-only access. */
+        const O_RDONLY: number;
+        /** Constant for fs.open(). Flag indicating to open a file for write-only access. */
+        const O_WRONLY: number;
+        /** Constant for fs.open(). Flag indicating to open a file for read-write access. */
+        const O_RDWR: number;
+        /** Constant for fs.open(). Flag indicating to create the file if it does not already exist. */
+        const O_CREAT: number;
+        /** Constant for fs.open(). Flag indicating that opening a file should fail if the O_CREAT flag is set and the file already exists. */
+        const O_EXCL: number;
+        /**
+         * Constant for fs.open(). Flag indicating that if path identifies a terminal device,
+         * opening the path shall not cause that terminal to become the controlling terminal for the process
+         * (if the process does not already have one).
+         */
+        const O_NOCTTY: number;
+        /** Constant for fs.open(). Flag indicating that if the file exists and is a regular file, and the file is opened successfully for write access, its length shall be truncated to zero. */
+        const O_TRUNC: number;
+        /** Constant for fs.open(). Flag indicating that data will be appended to the end of the file. */
+        const O_APPEND: number;
+        /** Constant for fs.open(). Flag indicating that the open should fail if the path is not a directory. */
+        const O_DIRECTORY: number;
+        /**
+         * constant for fs.open().
+         * Flag indicating reading accesses to the file system will no longer result in
+         * an update to the atime information associated with the file.
+         * This flag is available on Linux operating systems only.
+         */
+        const O_NOATIME: number;
+        /** Constant for fs.open(). Flag indicating that the open should fail if the path is a symbolic link. */
+        const O_NOFOLLOW: number;
+        /** Constant for fs.open(). Flag indicating that the file is opened for synchronous I/O. */
+        const O_SYNC: number;
+        /** Constant for fs.open(). Flag indicating that the file is opened for synchronous I/O with write operations waiting for data integrity. */
+        const O_DSYNC: number;
+        /** Constant for fs.open(). Flag indicating to open the symbolic link itself rather than the resource it is pointing to. */
+        const O_SYMLINK: number;
+        /** Constant for fs.open(). When set, an attempt will be made to minimize caching effects of file I/O. */
+        const O_DIRECT: number;
+        /** Constant for fs.open(). Flag indicating to open the file in nonblocking mode when possible. */
+        const O_NONBLOCK: number;
+        // File Type Constants
+        /** Constant for fs.Stats mode property for determining a file's type. Bit mask used to extract the file type code. */
+        const S_IFMT: number;
+        /** Constant for fs.Stats mode property for determining a file's type. File type constant for a regular file. */
+        const S_IFREG: number;
+        /** Constant for fs.Stats mode property for determining a file's type. File type constant for a directory. */
+        const S_IFDIR: number;
+        /** Constant for fs.Stats mode property for determining a file's type. File type constant for a character-oriented device file. */
+        const S_IFCHR: number;
+        /** Constant for fs.Stats mode property for determining a file's type. File type constant for a block-oriented device file. */
+        const S_IFBLK: number;
+        /** Constant for fs.Stats mode property for determining a file's type. File type constant for a FIFO/pipe. */
+        const S_IFIFO: number;
+        /** Constant for fs.Stats mode property for determining a file's type. File type constant for a symbolic link. */
+        const S_IFLNK: number;
+        /** Constant for fs.Stats mode property for determining a file's type. File type constant for a socket. */
+        const S_IFSOCK: number;
+        // File Mode Constants
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable, writable and executable by owner. */
+        const S_IRWXU: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable by owner. */
+        const S_IRUSR: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating writable by owner. */
+        const S_IWUSR: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating executable by owner. */
+        const S_IXUSR: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable, writable and executable by group. */
+        const S_IRWXG: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable by group. */
+        const S_IRGRP: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating writable by group. */
+        const S_IWGRP: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating executable by group. */
+        const S_IXGRP: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable, writable and executable by others. */
+        const S_IRWXO: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable by others. */
+        const S_IROTH: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating writable by others. */
+        const S_IWOTH: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating executable by others. */
+        const S_IXOTH: number;
+        /**
+         * When set, a memory file mapping is used to access the file. This flag
+         * is available on Windows operating systems only. On other operating systems,
+         * this flag is ignored.
+         */
+        const UV_FS_O_FILEMAP: number;
+    }
+    /**
+     * Tests a user's permissions for the file or directory specified by `path`.
+     * The `mode` argument is an optional integer that specifies the accessibility
+     * checks to be performed. `mode` should be either the value `fs.constants.F_OK`or a mask consisting of the bitwise OR of any of `fs.constants.R_OK`,`fs.constants.W_OK`, and `fs.constants.X_OK`
+     * (e.g.`fs.constants.W_OK | fs.constants.R_OK`). Check `File access constants` for
+     * possible values of `mode`.
+     *
+     * The final argument, `callback`, is a callback function that is invoked with
+     * a possible error argument. If any of the accessibility checks fail, the error
+     * argument will be an `Error` object. The following examples check if`package.json` exists, and if it is readable or writable.
+     *
+     * ```js
+     * import { access, constants } from 'fs';
+     *
+     * const file = 'package.json';
+     *
+     * // Check if the file exists in the current directory.
+     * access(file, constants.F_OK, (err) => {
+     *   console.log(`${file} ${err ? 'does not exist' : 'exists'}`);
+     * });
+     *
+     * // Check if the file is readable.
+     * access(file, constants.R_OK, (err) => {
+     *   console.log(`${file} ${err ? 'is not readable' : 'is readable'}`);
+     * });
+     *
+     * // Check if the file is writable.
+     * access(file, constants.W_OK, (err) => {
+     *   console.log(`${file} ${err ? 'is not writable' : 'is writable'}`);
+     * });
+     *
+     * // Check if the file is readable and writable.
+     * access(file, constants.R_OK | constants.W_OK, (err) => {
+     *   console.log(`${file} ${err ? 'is not' : 'is'} readable and writable`);
+     * });
+     * ```
+     *
+     * Do not use `fs.access()` to check for the accessibility of a file before calling`fs.open()`, `fs.readFile()` or `fs.writeFile()`. Doing
+     * so introduces a race condition, since other processes may change the file's
+     * state between the two calls. Instead, user code should open/read/write the
+     * file directly and handle the error raised if the file is not accessible.
+     *
+     * **write (NOT RECOMMENDED)**
+     *
+     * ```js
+     * import { access, open, close } from 'fs';
+     *
+     * access('myfile', (err) => {
+     *   if (!err) {
+     *     console.error('myfile already exists');
+     *     return;
+     *   }
+     *
+     *   open('myfile', 'wx', (err, fd) => {
+     *     if (err) throw err;
+     *
+     *     try {
+     *       writeMyData(fd);
+     *     } finally {
+     *       close(fd, (err) => {
+     *         if (err) throw err;
+     *       });
+     *     }
+     *   });
+     * });
+     * ```
+     *
+     * **write (RECOMMENDED)**
+     *
+     * ```js
+     * import { open, close } from 'fs';
+     *
+     * open('myfile', 'wx', (err, fd) => {
+     *   if (err) {
+     *     if (err.code === 'EEXIST') {
+     *       console.error('myfile already exists');
+     *       return;
+     *     }
+     *
+     *     throw err;
+     *   }
+     *
+     *   try {
+     *     writeMyData(fd);
+     *   } finally {
+     *     close(fd, (err) => {
+     *       if (err) throw err;
+     *     });
+     *   }
+     * });
+     * ```
+     *
+     * **read (NOT RECOMMENDED)**
+     *
+     * ```js
+     * import { access, open, close } from 'fs';
+     * access('myfile', (err) => {
+     *   if (err) {
+     *     if (err.code === 'ENOENT') {
+     *       console.error('myfile does not exist');
+     *       return;
+     *     }
+     *
+     *     throw err;
+     *   }
+     *
+     *   open('myfile', 'r', (err, fd) => {
+     *     if (err) throw err;
+     *
+     *     try {
+     *       readMyData(fd);
+     *     } finally {
+     *       close(fd, (err) => {
+     *         if (err) throw err;
+     *       });
+     *     }
+     *   });
+     * });
+     * ```
+     *
+     * **read (RECOMMENDED)**
+     *
+     * ```js
+     * import { open, close } from 'fs';
+     *
+     * open('myfile', 'r', (err, fd) => {
+     *   if (err) {
+     *     if (err.code === 'ENOENT') {
+     *       console.error('myfile does not exist');
+     *       return;
+     *     }
+     *
+     *     throw err;
+     *   }
+     *
+     *   try {
+     *     readMyData(fd);
+     *   } finally {
+     *     close(fd, (err) => {
+     *       if (err) throw err;
+     *     });
+     *   }
+     * });
+     * ```
+     *
+     * The "not recommended" examples above check for accessibility and then use the
+     * file; the "recommended" examples are better because they use the file directly
+     * and handle the error, if any.
+     *
+     * In general, check for the accessibility of a file only if the file will not be
+     * used directly, for example when its accessibility is a signal from another
+     * process.
+     *
+     * On Windows, access-control policies (ACLs) on a directory may limit access to
+     * a file or directory. The `fs.access()` function, however, does not check the
+     * ACL and therefore may report that a path is accessible even if the ACL restricts
+     * the user from reading or writing to it.
+     * @since v0.11.15
+     * @param [mode=fs.constants.F_OK]
+     */
+    export function access(path: PathLike, mode: number | undefined, callback: NoParamCallback): void;
+    /**
+     * Asynchronously tests a user's permissions for the file specified by path.
+     * @param path A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function access(path: PathLike, callback: NoParamCallback): void;
+    export namespace access {
+        /**
+         * Asynchronously tests a user's permissions for the file specified by path.
+         * @param path A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+         * URL support is _experimental_.
+         */
+        function __promisify__(path: PathLike, mode?: number): Promise<void>;
+    }
+    /**
+     * Synchronously tests a user's permissions for the file or directory specified
+     * by `path`. The `mode` argument is an optional integer that specifies the
+     * accessibility checks to be performed. `mode` should be either the value`fs.constants.F_OK` or a mask consisting of the bitwise OR of any of`fs.constants.R_OK`, `fs.constants.W_OK`, and
+     * `fs.constants.X_OK` (e.g.`fs.constants.W_OK | fs.constants.R_OK`). Check `File access constants` for
+     * possible values of `mode`.
+     *
+     * If any of the accessibility checks fail, an `Error` will be thrown. Otherwise,
+     * the method will return `undefined`.
+     *
+     * ```js
+     * import { accessSync, constants } from 'fs';
+     *
+     * try {
+     *   accessSync('etc/passwd', constants.R_OK | constants.W_OK);
+     *   console.log('can read/write');
+     * } catch (err) {
+     *   console.error('no access!');
+     * }
+     * ```
+     * @since v0.11.15
+     * @param [mode=fs.constants.F_OK]
+     */
+    export function accessSync(path: PathLike, mode?: number): void;
+    interface StreamOptions {
+        flags?: string | undefined;
+        encoding?: BufferEncoding | undefined;
+        fd?: number | promises.FileHandle | undefined;
+        mode?: number | undefined;
+        autoClose?: boolean | undefined;
+        /**
+         * @default false
+         */
+        emitClose?: boolean | undefined;
+        start?: number | undefined;
+        highWaterMark?: number | undefined;
+    }
+    interface ReadStreamOptions extends StreamOptions {
+        end?: number | undefined;
+    }
+    /**
+     * Unlike the 16 kb default `highWaterMark` for a `stream.Readable`, the stream
+     * returned by this method has a default `highWaterMark` of 64 kb.
+     *
+     * `options` can include `start` and `end` values to read a range of bytes from
+     * the file instead of the entire file. Both `start` and `end` are inclusive and
+     * start counting at 0, allowed values are in the
+     * \[0, [`Number.MAX_SAFE_INTEGER`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER)\] range. If `fd` is specified and `start` is
+     * omitted or `undefined`, `fs.createReadStream()` reads sequentially from the
+     * current file position. The `encoding` can be any one of those accepted by `Buffer`.
+     *
+     * If `fd` is specified, `ReadStream` will ignore the `path` argument and will use
+     * the specified file descriptor. This means that no `'open'` event will be
+     * emitted. `fd` should be blocking; non-blocking `fd`s should be passed to `net.Socket`.
+     *
+     * If `fd` points to a character device that only supports blocking reads
+     * (such as keyboard or sound card), read operations do not finish until data is
+     * available. This can prevent the process from exiting and the stream from
+     * closing naturally.
+     *
+     * By default, the stream will emit a `'close'` event after it has been
+     * destroyed.  Set the `emitClose` option to `false` to change this behavior.
+     *
+     * By providing the `fs` option, it is possible to override the corresponding `fs`implementations for `open`, `read`, and `close`. When providing the `fs` option,
+     * an override for `read` is required. If no `fd` is provided, an override for`open` is also required. If `autoClose` is `true`, an override for `close` is
+     * also required.
+     *
+     * ```js
+     * import { createReadStream } from 'fs';
+     *
+     * // Create a stream from some character device.
+     * const stream = createReadStream('/dev/input/event0');
+     * setTimeout(() => {
+     *   stream.close(); // This may not close the stream.
+     *   // Artificially marking end-of-stream, as if the underlying resource had
+     *   // indicated end-of-file by itself, allows the stream to close.
+     *   // This does not cancel pending read operations, and if there is such an
+     *   // operation, the process may still not be able to exit successfully
+     *   // until it finishes.
+     *   stream.push(null);
+     *   stream.read(0);
+     * }, 100);
+     * ```
+     *
+     * If `autoClose` is false, then the file descriptor won't be closed, even if
+     * there's an error. It is the application's responsibility to close it and make
+     * sure there's no file descriptor leak. If `autoClose` is set to true (default
+     * behavior), on `'error'` or `'end'` the file descriptor will be closed
+     * automatically.
+     *
+     * `mode` sets the file mode (permission and sticky bits), but only if the
+     * file was created.
+     *
+     * An example to read the last 10 bytes of a file which is 100 bytes long:
+     *
+     * ```js
+     * import { createReadStream } from 'fs';
+     *
+     * createReadStream('sample.txt', { start: 90, end: 99 });
+     * ```
+     *
+     * If `options` is a string, then it specifies the encoding.
+     * @since v0.1.31
+     */
+    export function createReadStream(path: PathLike, options?: BufferEncoding | ReadStreamOptions): ReadStream;
+    /**
+     * `options` may also include a `start` option to allow writing data at some
+     * position past the beginning of the file, allowed values are in the
+     * \[0, [`Number.MAX_SAFE_INTEGER`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER)\] range. Modifying a file rather than
+     * replacing it may require the `flags` option to be set to `r+` rather than the
+     * default `w`. The `encoding` can be any one of those accepted by `Buffer`.
+     *
+     * If `autoClose` is set to true (default behavior) on `'error'` or `'finish'`the file descriptor will be closed automatically. If `autoClose` is false,
+     * then the file descriptor won't be closed, even if there's an error.
+     * It is the application's responsibility to close it and make sure there's no
+     * file descriptor leak.
+     *
+     * By default, the stream will emit a `'close'` event after it has been
+     * destroyed.  Set the `emitClose` option to `false` to change this behavior.
+     *
+     * By providing the `fs` option it is possible to override the corresponding `fs`implementations for `open`, `write`, `writev` and `close`. Overriding `write()`without `writev()` can reduce
+     * performance as some optimizations (`_writev()`)
+     * will be disabled. When providing the `fs` option, overrides for at least one of`write` and `writev` are required. If no `fd` option is supplied, an override
+     * for `open` is also required. If `autoClose` is `true`, an override for `close`is also required.
+     *
+     * Like `fs.ReadStream`, if `fd` is specified, `fs.WriteStream` will ignore the`path` argument and will use the specified file descriptor. This means that no`'open'` event will be
+     * emitted. `fd` should be blocking; non-blocking `fd`s
+     * should be passed to `net.Socket`.
+     *
+     * If `options` is a string, then it specifies the encoding.
+     * @since v0.1.31
+     */
+    export function createWriteStream(path: PathLike, options?: BufferEncoding | StreamOptions): WriteStream;
+    /**
+     * Forces all currently queued I/O operations associated with the file to the
+     * operating system's synchronized I/O completion state. Refer to the POSIX [`fdatasync(2)`](http://man7.org/linux/man-pages/man2/fdatasync.2.html) documentation for details. No arguments other
+     * than a possible
+     * exception are given to the completion callback.
+     * @since v0.1.96
+     */
+    export function fdatasync(fd: number, callback: NoParamCallback): void;
+    export namespace fdatasync {
+        /**
+         * Asynchronous fdatasync(2) - synchronize a file's in-core state with storage device.
+         * @param fd A file descriptor.
+         */
+        function __promisify__(fd: number): Promise<void>;
+    }
+    /**
+     * Forces all currently queued I/O operations associated with the file to the
+     * operating system's synchronized I/O completion state. Refer to the POSIX [`fdatasync(2)`](http://man7.org/linux/man-pages/man2/fdatasync.2.html) documentation for details. Returns `undefined`.
+     * @since v0.1.96
+     */
+    export function fdatasyncSync(fd: number): void;
+    /**
+     * Asynchronously copies `src` to `dest`. By default, `dest` is overwritten if it
+     * already exists. No arguments other than a possible exception are given to the
+     * callback function. Node.js makes no guarantees about the atomicity of the copy
+     * operation. If an error occurs after the destination file has been opened for
+     * writing, Node.js will attempt to remove the destination.
+     *
+     * `mode` is an optional integer that specifies the behavior
+     * of the copy operation. It is possible to create a mask consisting of the bitwise
+     * OR of two or more values (e.g.`fs.constants.COPYFILE_EXCL | fs.constants.COPYFILE_FICLONE`).
+     *
+     * * `fs.constants.COPYFILE_EXCL`: The copy operation will fail if `dest` already
+     * exists.
+     * * `fs.constants.COPYFILE_FICLONE`: The copy operation will attempt to create a
+     * copy-on-write reflink. If the platform does not support copy-on-write, then a
+     * fallback copy mechanism is used.
+     * * `fs.constants.COPYFILE_FICLONE_FORCE`: The copy operation will attempt to
+     * create a copy-on-write reflink. If the platform does not support
+     * copy-on-write, then the operation will fail.
+     *
+     * ```js
+     * import { copyFile, constants } from 'fs';
+     *
+     * function callback(err) {
+     *   if (err) throw err;
+     *   console.log('source.txt was copied to destination.txt');
+     * }
+     *
+     * // destination.txt will be created or overwritten by default.
+     * copyFile('source.txt', 'destination.txt', callback);
+     *
+     * // By using COPYFILE_EXCL, the operation will fail if destination.txt exists.
+     * copyFile('source.txt', 'destination.txt', constants.COPYFILE_EXCL, callback);
+     * ```
+     * @since v8.5.0
+     * @param src source filename to copy
+     * @param dest destination filename of the copy operation
+     * @param [mode=0] modifiers for copy operation.
+     */
+    export function copyFile(src: PathLike, dest: PathLike, callback: NoParamCallback): void;
+    export function copyFile(src: PathLike, dest: PathLike, mode: number, callback: NoParamCallback): void;
+    export namespace copyFile {
+        function __promisify__(src: PathLike, dst: PathLike, mode?: number): Promise<void>;
+    }
+    /**
+     * Synchronously copies `src` to `dest`. By default, `dest` is overwritten if it
+     * already exists. Returns `undefined`. Node.js makes no guarantees about the
+     * atomicity of the copy operation. If an error occurs after the destination file
+     * has been opened for writing, Node.js will attempt to remove the destination.
+     *
+     * `mode` is an optional integer that specifies the behavior
+     * of the copy operation. It is possible to create a mask consisting of the bitwise
+     * OR of two or more values (e.g.`fs.constants.COPYFILE_EXCL | fs.constants.COPYFILE_FICLONE`).
+     *
+     * * `fs.constants.COPYFILE_EXCL`: The copy operation will fail if `dest` already
+     * exists.
+     * * `fs.constants.COPYFILE_FICLONE`: The copy operation will attempt to create a
+     * copy-on-write reflink. If the platform does not support copy-on-write, then a
+     * fallback copy mechanism is used.
+     * * `fs.constants.COPYFILE_FICLONE_FORCE`: The copy operation will attempt to
+     * create a copy-on-write reflink. If the platform does not support
+     * copy-on-write, then the operation will fail.
+     *
+     * ```js
+     * import { copyFileSync, constants } from 'fs';
+     *
+     * // destination.txt will be created or overwritten by default.
+     * copyFileSync('source.txt', 'destination.txt');
+     * console.log('source.txt was copied to destination.txt');
+     *
+     * // By using COPYFILE_EXCL, the operation will fail if destination.txt exists.
+     * copyFileSync('source.txt', 'destination.txt', constants.COPYFILE_EXCL);
+     * ```
+     * @since v8.5.0
+     * @param src source filename to copy
+     * @param dest destination filename of the copy operation
+     * @param [mode=0] modifiers for copy operation.
+     */
+    export function copyFileSync(src: PathLike, dest: PathLike, mode?: number): void;
+    /**
+     * Write an array of `ArrayBufferView`s to the file specified by `fd` using`writev()`.
+     *
+     * `position` is the offset from the beginning of the file where this data
+     * should be written. If `typeof position !== 'number'`, the data will be written
+     * at the current position.
+     *
+     * The callback will be given three arguments: `err`, `bytesWritten`, and`buffers`. `bytesWritten` is how many bytes were written from `buffers`.
+     *
+     * If this method is `util.promisify()` ed, it returns a promise for an`Object` with `bytesWritten` and `buffers` properties.
+     *
+     * It is unsafe to use `fs.writev()` multiple times on the same file without
+     * waiting for the callback. For this scenario, use {@link createWriteStream}.
+     *
+     * On Linux, positional writes don't work when the file is opened in append mode.
+     * The kernel ignores the position argument and always appends the data to
+     * the end of the file.
+     * @since v12.9.0
+     */
+    export function writev(fd: number, buffers: ReadonlyArray<NodeJS.ArrayBufferView>, cb: (err: NodeJS.ErrnoException | null, bytesWritten: number, buffers: NodeJS.ArrayBufferView[]) => void): void;
+    export function writev(
+        fd: number,
+        buffers: ReadonlyArray<NodeJS.ArrayBufferView>,
+        position: number,
+        cb: (err: NodeJS.ErrnoException | null, bytesWritten: number, buffers: NodeJS.ArrayBufferView[]) => void
+    ): void;
+    export interface WriteVResult {
+        bytesWritten: number;
+        buffers: NodeJS.ArrayBufferView[];
+    }
+    export namespace writev {
+        function __promisify__(fd: number, buffers: ReadonlyArray<NodeJS.ArrayBufferView>, position?: number): Promise<WriteVResult>;
+    }
+    /**
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link writev}.
+     * @since v12.9.0
+     * @return The number of bytes written.
+     */
+    export function writevSync(fd: number, buffers: ReadonlyArray<NodeJS.ArrayBufferView>, position?: number): number;
+    /**
+     * Read from a file specified by `fd` and write to an array of `ArrayBufferView`s
+     * using `readv()`.
+     *
+     * `position` is the offset from the beginning of the file from where data
+     * should be read. If `typeof position !== 'number'`, the data will be read
+     * from the current position.
+     *
+     * The callback will be given three arguments: `err`, `bytesRead`, and`buffers`. `bytesRead` is how many bytes were read from the file.
+     *
+     * If this method is invoked as its `util.promisify()` ed version, it returns
+     * a promise for an `Object` with `bytesRead` and `buffers` properties.
+     * @since v13.13.0, v12.17.0
+     */
+    export function readv(fd: number, buffers: ReadonlyArray<NodeJS.ArrayBufferView>, cb: (err: NodeJS.ErrnoException | null, bytesRead: number, buffers: NodeJS.ArrayBufferView[]) => void): void;
+    export function readv(
+        fd: number,
+        buffers: ReadonlyArray<NodeJS.ArrayBufferView>,
+        position: number,
+        cb: (err: NodeJS.ErrnoException | null, bytesRead: number, buffers: NodeJS.ArrayBufferView[]) => void
+    ): void;
+    export interface ReadVResult {
+        bytesRead: number;
+        buffers: NodeJS.ArrayBufferView[];
+    }
+    export namespace readv {
+        function __promisify__(fd: number, buffers: ReadonlyArray<NodeJS.ArrayBufferView>, position?: number): Promise<ReadVResult>;
+    }
+    /**
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link readv}.
+     * @since v13.13.0, v12.17.0
+     * @return The number of bytes read.
+     */
+    export function readvSync(fd: number, buffers: ReadonlyArray<NodeJS.ArrayBufferView>, position?: number): number;
+    export interface OpenDirOptions {
+        encoding?: BufferEncoding | undefined;
+        /**
+         * Number of directory entries that are buffered
+         * internally when reading from the directory. Higher values lead to better
+         * performance but higher memory usage.
+         * @default 32
+         */
+        bufferSize?: number | undefined;
+    }
+    /**
+     * Synchronously open a directory. See [`opendir(3)`](http://man7.org/linux/man-pages/man3/opendir.3.html).
+     *
+     * Creates an `fs.Dir`, which contains all further functions for reading from
+     * and cleaning up the directory.
+     *
+     * The `encoding` option sets the encoding for the `path` while opening the
+     * directory and subsequent read operations.
+     * @since v12.12.0
+     */
+    export function opendirSync(path: PathLike, options?: OpenDirOptions): Dir;
+    /**
+     * Asynchronously open a directory. See the POSIX [`opendir(3)`](http://man7.org/linux/man-pages/man3/opendir.3.html) documentation for
+     * more details.
+     *
+     * Creates an `fs.Dir`, which contains all further functions for reading from
+     * and cleaning up the directory.
+     *
+     * The `encoding` option sets the encoding for the `path` while opening the
+     * directory and subsequent read operations.
+     * @since v12.12.0
+     */
+    export function opendir(path: PathLike, cb: (err: NodeJS.ErrnoException | null, dir: Dir) => void): void;
+    export function opendir(path: PathLike, options: OpenDirOptions, cb: (err: NodeJS.ErrnoException | null, dir: Dir) => void): void;
+    export namespace opendir {
+        function __promisify__(path: PathLike, options?: OpenDirOptions): Promise<Dir>;
+    }
+    export interface BigIntStats extends StatsBase<bigint> {
+        atimeNs: bigint;
+        mtimeNs: bigint;
+        ctimeNs: bigint;
+        birthtimeNs: bigint;
+    }
+    export interface BigIntOptions {
+        bigint: true;
+    }
+    export interface StatOptions {
+        bigint?: boolean | undefined;
+    }
+    export interface StatSyncOptions extends StatOptions {
+        throwIfNoEntry?: boolean | undefined;
+    }
+    interface CopyOptionsBase {
+        /**
+         * Dereference symlinks
+         * @default false
+         */
+        dereference?: boolean;
+        /**
+         * When `force` is `false`, and the destination
+         * exists, throw an error.
+         * @default false
+         */
+        errorOnExist?: boolean;
+        /**
+         * Overwrite existing file or directory. _The copy
+         * operation will ignore errors if you set this to false and the destination
+         * exists. Use the `errorOnExist` option to change this behavior.
+         * @default true
+         */
+        force?: boolean;
+        /**
+         * When `true` timestamps from `src` will
+         * be preserved.
+         * @default false
+         */
+        preserveTimestamps?: boolean;
+        /**
+         * Copy directories recursively.
+         * @default false
+         */
+        recursive?: boolean;
+        /**
+         * When true, path resolution for symlinks will be skipped
+         * @default false
+         */
+        verbatimSymlinks?: boolean;
+    }
+    export interface CopyOptions extends CopyOptionsBase {
+        /**
+         * Function to filter copied files/directories. Return
+         * `true` to copy the item, `false` to ignore it.
+         */
+        filter?(source: string, destination: string): boolean | Promise<boolean>;
+    }
+    export interface CopySyncOptions extends CopyOptionsBase {
+        /**
+         * Function to filter copied files/directories. Return
+         * `true` to copy the item, `false` to ignore it.
+         */
+        filter?(source: string, destination: string): boolean;
+    }
+    /**
+     * Asynchronously copies the entire directory structure from `src` to `dest`,
+     * including subdirectories and files.
+     *
+     * When copying a directory to another directory, globs are not supported and
+     * behavior is similar to `cp dir1/ dir2/`.
+     * @since v16.7.0
+     * @experimental
+     * @param src source path to copy.
+     * @param dest destination path to copy to.
+     */
+    export function cp(source: string | URL, destination: string | URL, callback: (err: NodeJS.ErrnoException | null) => void): void;
+    export function cp(source: string | URL, destination: string | URL, opts: CopyOptions, callback: (err: NodeJS.ErrnoException | null) => void): void;
+    /**
+     * Synchronously copies the entire directory structure from `src` to `dest`,
+     * including subdirectories and files.
+     *
+     * When copying a directory to another directory, globs are not supported and
+     * behavior is similar to `cp dir1/ dir2/`.
+     * @since v16.7.0
+     * @experimental
+     * @param src source path to copy.
+     * @param dest destination path to copy to.
+     */
+    export function cpSync(source: string | URL, destination: string | URL, opts?: CopySyncOptions): void;
+}
+declare module 'node:fs' {
+    export * from 'fs';
+}
diff --git a/igv_component/node_modules/@types/node/fs/promises.d.ts b/igv_component/node_modules/@types/node/fs/promises.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..9d0b5f1090c0a5b225f099214b9251b1e61a942a
--- /dev/null
+++ b/igv_component/node_modules/@types/node/fs/promises.d.ts
@@ -0,0 +1,1120 @@
+/**
+ * The `fs/promises` API provides asynchronous file system methods that return
+ * promises.
+ *
+ * The promise APIs use the underlying Node.js threadpool to perform file
+ * system operations off the event loop thread. These operations are not
+ * synchronized or threadsafe. Care must be taken when performing multiple
+ * concurrent modifications on the same file or data corruption may occur.
+ * @since v10.0.0
+ */
+declare module 'fs/promises' {
+    import { Abortable } from 'node:events';
+    import { Stream } from 'node:stream';
+    import { ReadableStream } from 'node:stream/web';
+    import {
+        BigIntStats,
+        BufferEncodingOption,
+        constants as fsConstants,
+        CopyOptions,
+        Dir,
+        Dirent,
+        MakeDirectoryOptions,
+        Mode,
+        ObjectEncodingOptions,
+        OpenDirOptions,
+        OpenMode,
+        PathLike,
+        ReadStream,
+        ReadVResult,
+        RmDirOptions,
+        RmOptions,
+        StatOptions,
+        Stats,
+        TimeLike,
+        WatchEventType,
+        WatchOptions,
+        WriteStream,
+        WriteVResult,
+    } from 'node:fs';
+
+    interface FileChangeInfo<T extends string | Buffer> {
+        eventType: WatchEventType;
+        filename: T;
+    }
+    interface FlagAndOpenMode {
+        mode?: Mode | undefined;
+        flag?: OpenMode | undefined;
+    }
+    interface FileReadResult<T extends NodeJS.ArrayBufferView> {
+        bytesRead: number;
+        buffer: T;
+    }
+    interface FileReadOptions<T extends NodeJS.ArrayBufferView = Buffer> {
+        /**
+         * @default `Buffer.alloc(0xffff)`
+         */
+        buffer?: T;
+        /**
+         * @default 0
+         */
+        offset?: number | null;
+        /**
+         * @default `buffer.byteLength`
+         */
+        length?: number | null;
+        position?: number | null;
+    }
+    interface CreateReadStreamOptions {
+        encoding?: BufferEncoding | null | undefined;
+        autoClose?: boolean | undefined;
+        emitClose?: boolean | undefined;
+        start?: number | undefined;
+        end?: number | undefined;
+        highWaterMark?: number | undefined;
+    }
+    interface CreateWriteStreamOptions {
+        encoding?: BufferEncoding | null | undefined;
+        autoClose?: boolean | undefined;
+        emitClose?: boolean | undefined;
+        start?: number | undefined;
+    }
+    // TODO: Add `EventEmitter` close
+    interface FileHandle {
+        /**
+         * The numeric file descriptor managed by the {FileHandle} object.
+         * @since v10.0.0
+         */
+        readonly fd: number;
+        /**
+         * Alias of `filehandle.writeFile()`.
+         *
+         * When operating on file handles, the mode cannot be changed from what it was set
+         * to with `fsPromises.open()`. Therefore, this is equivalent to `filehandle.writeFile()`.
+         * @since v10.0.0
+         * @return Fulfills with `undefined` upon success.
+         */
+        appendFile(data: string | Uint8Array, options?: (ObjectEncodingOptions & FlagAndOpenMode) | BufferEncoding | null): Promise<void>;
+        /**
+         * Changes the ownership of the file. A wrapper for [`chown(2)`](http://man7.org/linux/man-pages/man2/chown.2.html).
+         * @since v10.0.0
+         * @param uid The file's new owner's user id.
+         * @param gid The file's new group's group id.
+         * @return Fulfills with `undefined` upon success.
+         */
+        chown(uid: number, gid: number): Promise<void>;
+        /**
+         * Modifies the permissions on the file. See [`chmod(2)`](http://man7.org/linux/man-pages/man2/chmod.2.html).
+         * @since v10.0.0
+         * @param mode the file mode bit mask.
+         * @return Fulfills with `undefined` upon success.
+         */
+        chmod(mode: Mode): Promise<void>;
+        /**
+         * Unlike the 16 kb default `highWaterMark` for a `stream.Readable`, the stream
+         * returned by this method has a default `highWaterMark` of 64 kb.
+         *
+         * `options` can include `start` and `end` values to read a range of bytes from
+         * the file instead of the entire file. Both `start` and `end` are inclusive and
+         * start counting at 0, allowed values are in the
+         * \[0, [`Number.MAX_SAFE_INTEGER`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER)\] range. If `start` is
+         * omitted or `undefined`, `filehandle.createReadStream()` reads sequentially from
+         * the current file position. The `encoding` can be any one of those accepted by `Buffer`.
+         *
+         * If the `FileHandle` points to a character device that only supports blocking
+         * reads (such as keyboard or sound card), read operations do not finish until data
+         * is available. This can prevent the process from exiting and the stream from
+         * closing naturally.
+         *
+         * By default, the stream will emit a `'close'` event after it has been
+         * destroyed.  Set the `emitClose` option to `false` to change this behavior.
+         *
+         * ```js
+         * import { open } from 'fs/promises';
+         *
+         * const fd = await open('/dev/input/event0');
+         * // Create a stream from some character device.
+         * const stream = fd.createReadStream();
+         * setTimeout(() => {
+         *   stream.close(); // This may not close the stream.
+         *   // Artificially marking end-of-stream, as if the underlying resource had
+         *   // indicated end-of-file by itself, allows the stream to close.
+         *   // This does not cancel pending read operations, and if there is such an
+         *   // operation, the process may still not be able to exit successfully
+         *   // until it finishes.
+         *   stream.push(null);
+         *   stream.read(0);
+         * }, 100);
+         * ```
+         *
+         * If `autoClose` is false, then the file descriptor won't be closed, even if
+         * there's an error. It is the application's responsibility to close it and make
+         * sure there's no file descriptor leak. If `autoClose` is set to true (default
+         * behavior), on `'error'` or `'end'` the file descriptor will be closed
+         * automatically.
+         *
+         * An example to read the last 10 bytes of a file which is 100 bytes long:
+         *
+         * ```js
+         * import { open } from 'fs/promises';
+         *
+         * const fd = await open('sample.txt');
+         * fd.createReadStream({ start: 90, end: 99 });
+         * ```
+         * @since v16.11.0
+         */
+        createReadStream(options?: CreateReadStreamOptions): ReadStream;
+        /**
+         * `options` may also include a `start` option to allow writing data at some
+         * position past the beginning of the file, allowed values are in the
+         * \[0, [`Number.MAX_SAFE_INTEGER`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER)\] range. Modifying a file rather than
+         * replacing it may require the `flags` `open` option to be set to `r+` rather than
+         * the default `r`. The `encoding` can be any one of those accepted by `Buffer`.
+         *
+         * If `autoClose` is set to true (default behavior) on `'error'` or `'finish'`the file descriptor will be closed automatically. If `autoClose` is false,
+         * then the file descriptor won't be closed, even if there's an error.
+         * It is the application's responsibility to close it and make sure there's no
+         * file descriptor leak.
+         *
+         * By default, the stream will emit a `'close'` event after it has been
+         * destroyed.  Set the `emitClose` option to `false` to change this behavior.
+         * @since v16.11.0
+         */
+        createWriteStream(options?: CreateWriteStreamOptions): WriteStream;
+        /**
+         * Forces all currently queued I/O operations associated with the file to the
+         * operating system's synchronized I/O completion state. Refer to the POSIX [`fdatasync(2)`](http://man7.org/linux/man-pages/man2/fdatasync.2.html) documentation for details.
+         *
+         * Unlike `filehandle.sync` this method does not flush modified metadata.
+         * @since v10.0.0
+         * @return Fulfills with `undefined` upon success.
+         */
+        datasync(): Promise<void>;
+        /**
+         * Request that all data for the open file descriptor is flushed to the storage
+         * device. The specific implementation is operating system and device specific.
+         * Refer to the POSIX [`fsync(2)`](http://man7.org/linux/man-pages/man2/fsync.2.html) documentation for more detail.
+         * @since v10.0.0
+         * @return Fufills with `undefined` upon success.
+         */
+        sync(): Promise<void>;
+        /**
+         * Reads data from the file and stores that in the given buffer.
+         *
+         * If the file is not modified concurrently, the end-of-file is reached when the
+         * number of bytes read is zero.
+         * @since v10.0.0
+         * @param buffer A buffer that will be filled with the file data read.
+         * @param offset The location in the buffer at which to start filling.
+         * @param length The number of bytes to read.
+         * @param position The location where to begin reading data from the file. If `null`, data will be read from the current file position, and the position will be updated. If `position` is an
+         * integer, the current file position will remain unchanged.
+         * @return Fulfills upon success with an object with two properties:
+         */
+        read<T extends NodeJS.ArrayBufferView>(buffer: T, offset?: number | null, length?: number | null, position?: number | null): Promise<FileReadResult<T>>;
+        read<T extends NodeJS.ArrayBufferView = Buffer>(options?: FileReadOptions<T>): Promise<FileReadResult<T>>;
+        /**
+         * Returns a `ReadableStream` that may be used to read the files data.
+         *
+         * An error will be thrown if this method is called more than once or is called after the `FileHandle` is closed
+         * or closing.
+         *
+         * ```js
+         * import { open } from 'node:fs/promises';
+         *
+         * const file = await open('./some/file/to/read');
+         *
+         * for await (const chunk of file.readableWebStream())
+         *   console.log(chunk);
+         *
+         * await file.close();
+         * ```
+         *
+         * While the `ReadableStream` will read the file to completion, it will not close the `FileHandle` automatically. User code must still call the `fileHandle.close()` method.
+         *
+         * @since v17.0.0
+         * @experimental
+         */
+        readableWebStream(): ReadableStream;
+        /**
+         * Asynchronously reads the entire contents of a file.
+         *
+         * If `options` is a string, then it specifies the `encoding`.
+         *
+         * The `FileHandle` has to support reading.
+         *
+         * If one or more `filehandle.read()` calls are made on a file handle and then a`filehandle.readFile()` call is made, the data will be read from the current
+         * position till the end of the file. It doesn't always read from the beginning
+         * of the file.
+         * @since v10.0.0
+         * @return Fulfills upon a successful read with the contents of the file. If no encoding is specified (using `options.encoding`), the data is returned as a {Buffer} object. Otherwise, the
+         * data will be a string.
+         */
+        readFile(
+            options?: {
+                encoding?: null | undefined;
+                flag?: OpenMode | undefined;
+            } | null
+        ): Promise<Buffer>;
+        /**
+         * Asynchronously reads the entire contents of a file. The underlying file will _not_ be closed automatically.
+         * The `FileHandle` must have been opened for reading.
+         * @param options An object that may contain an optional flag.
+         * If a flag is not provided, it defaults to `'r'`.
+         */
+        readFile(
+            options:
+                | {
+                      encoding: BufferEncoding;
+                      flag?: OpenMode | undefined;
+                  }
+                | BufferEncoding
+        ): Promise<string>;
+        /**
+         * Asynchronously reads the entire contents of a file. The underlying file will _not_ be closed automatically.
+         * The `FileHandle` must have been opened for reading.
+         * @param options An object that may contain an optional flag.
+         * If a flag is not provided, it defaults to `'r'`.
+         */
+        readFile(
+            options?:
+                | (ObjectEncodingOptions & {
+                      flag?: OpenMode | undefined;
+                  })
+                | BufferEncoding
+                | null
+        ): Promise<string | Buffer>;
+        /**
+         * @since v10.0.0
+         * @return Fulfills with an {fs.Stats} for the file.
+         */
+        stat(
+            opts?: StatOptions & {
+                bigint?: false | undefined;
+            }
+        ): Promise<Stats>;
+        stat(
+            opts: StatOptions & {
+                bigint: true;
+            }
+        ): Promise<BigIntStats>;
+        stat(opts?: StatOptions): Promise<Stats | BigIntStats>;
+        /**
+         * Truncates the file.
+         *
+         * If the file was larger than `len` bytes, only the first `len` bytes will be
+         * retained in the file.
+         *
+         * The following example retains only the first four bytes of the file:
+         *
+         * ```js
+         * import { open } from 'fs/promises';
+         *
+         * let filehandle = null;
+         * try {
+         *   filehandle = await open('temp.txt', 'r+');
+         *   await filehandle.truncate(4);
+         * } finally {
+         *   await filehandle?.close();
+         * }
+         * ```
+         *
+         * If the file previously was shorter than `len` bytes, it is extended, and the
+         * extended part is filled with null bytes (`'\0'`):
+         *
+         * If `len` is negative then `0` will be used.
+         * @since v10.0.0
+         * @param [len=0]
+         * @return Fulfills with `undefined` upon success.
+         */
+        truncate(len?: number): Promise<void>;
+        /**
+         * Change the file system timestamps of the object referenced by the `FileHandle` then resolves the promise with no arguments upon success.
+         * @since v10.0.0
+         */
+        utimes(atime: TimeLike, mtime: TimeLike): Promise<void>;
+        /**
+         * Asynchronously writes data to a file, replacing the file if it already exists.`data` can be a string, a buffer, an
+         * [AsyncIterable](https://tc39.github.io/ecma262/#sec-asynciterable-interface) or
+         * [Iterable](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#The_iterable_protocol) object.
+         * The promise is resolved with no arguments upon success.
+         *
+         * If `options` is a string, then it specifies the `encoding`.
+         *
+         * The `FileHandle` has to support writing.
+         *
+         * It is unsafe to use `filehandle.writeFile()` multiple times on the same file
+         * without waiting for the promise to be resolved (or rejected).
+         *
+         * If one or more `filehandle.write()` calls are made on a file handle and then a`filehandle.writeFile()` call is made, the data will be written from the
+         * current position till the end of the file. It doesn't always write from the
+         * beginning of the file.
+         * @since v10.0.0
+         */
+        writeFile(data: string | Uint8Array, options?: (ObjectEncodingOptions & FlagAndOpenMode & Abortable) | BufferEncoding | null): Promise<void>;
+        /**
+         * Write `buffer` to the file.
+         *
+         * The promise is resolved with an object containing two properties:
+         *
+         * It is unsafe to use `filehandle.write()` multiple times on the same file
+         * without waiting for the promise to be resolved (or rejected). For this
+         * scenario, use `filehandle.createWriteStream()`.
+         *
+         * On Linux, positional writes do not work when the file is opened in append mode.
+         * The kernel ignores the position argument and always appends the data to
+         * the end of the file.
+         * @since v10.0.0
+         * @param [offset=0] The start position from within `buffer` where the data to write begins.
+         * @param [length=buffer.byteLength - offset] The number of bytes from `buffer` to write.
+         * @param position The offset from the beginning of the file where the data from `buffer` should be written. If `position` is not a `number`, the data will be written at the current position.
+         * See the POSIX pwrite(2) documentation for more detail.
+         */
+        write<TBuffer extends Uint8Array>(
+            buffer: TBuffer,
+            offset?: number | null,
+            length?: number | null,
+            position?: number | null
+        ): Promise<{
+            bytesWritten: number;
+            buffer: TBuffer;
+        }>;
+        write(
+            data: string,
+            position?: number | null,
+            encoding?: BufferEncoding | null
+        ): Promise<{
+            bytesWritten: number;
+            buffer: string;
+        }>;
+        /**
+         * Write an array of [ArrayBufferView](https://developer.mozilla.org/en-US/docs/Web/API/ArrayBufferView) s to the file.
+         *
+         * The promise is resolved with an object containing a two properties:
+         *
+         * It is unsafe to call `writev()` multiple times on the same file without waiting
+         * for the promise to be resolved (or rejected).
+         *
+         * On Linux, positional writes don't work when the file is opened in append mode.
+         * The kernel ignores the position argument and always appends the data to
+         * the end of the file.
+         * @since v12.9.0
+         * @param position The offset from the beginning of the file where the data from `buffers` should be written. If `position` is not a `number`, the data will be written at the current
+         * position.
+         */
+        writev(buffers: ReadonlyArray<NodeJS.ArrayBufferView>, position?: number): Promise<WriteVResult>;
+        /**
+         * Read from a file and write to an array of [ArrayBufferView](https://developer.mozilla.org/en-US/docs/Web/API/ArrayBufferView) s
+         * @since v13.13.0, v12.17.0
+         * @param position The offset from the beginning of the file where the data should be read from. If `position` is not a `number`, the data will be read from the current position.
+         * @return Fulfills upon success an object containing two properties:
+         */
+        readv(buffers: ReadonlyArray<NodeJS.ArrayBufferView>, position?: number): Promise<ReadVResult>;
+        /**
+         * Closes the file handle after waiting for any pending operation on the handle to
+         * complete.
+         *
+         * ```js
+         * import { open } from 'fs/promises';
+         *
+         * let filehandle;
+         * try {
+         *   filehandle = await open('thefile.txt', 'r');
+         * } finally {
+         *   await filehandle?.close();
+         * }
+         * ```
+         * @since v10.0.0
+         * @return Fulfills with `undefined` upon success.
+         */
+        close(): Promise<void>;
+    }
+
+    const constants: typeof fsConstants;
+
+    /**
+     * Tests a user's permissions for the file or directory specified by `path`.
+     * The `mode` argument is an optional integer that specifies the accessibility
+     * checks to be performed. `mode` should be either the value `fs.constants.F_OK`or a mask consisting of the bitwise OR of any of `fs.constants.R_OK`,`fs.constants.W_OK`, and `fs.constants.X_OK`
+     * (e.g.`fs.constants.W_OK | fs.constants.R_OK`). Check `File access constants` for
+     * possible values of `mode`.
+     *
+     * If the accessibility check is successful, the promise is resolved with no
+     * value. If any of the accessibility checks fail, the promise is rejected
+     * with an [Error](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error) object. The following example checks if the file`/etc/passwd` can be read and
+     * written by the current process.
+     *
+     * ```js
+     * import { access } from 'fs/promises';
+     * import { constants } from 'fs';
+     *
+     * try {
+     *   await access('/etc/passwd', constants.R_OK | constants.W_OK);
+     *   console.log('can access');
+     * } catch {
+     *   console.error('cannot access');
+     * }
+     * ```
+     *
+     * Using `fsPromises.access()` to check for the accessibility of a file before
+     * calling `fsPromises.open()` is not recommended. Doing so introduces a race
+     * condition, since other processes may change the file's state between the two
+     * calls. Instead, user code should open/read/write the file directly and handle
+     * the error raised if the file is not accessible.
+     * @since v10.0.0
+     * @param [mode=fs.constants.F_OK]
+     * @return Fulfills with `undefined` upon success.
+     */
+    function access(path: PathLike, mode?: number): Promise<void>;
+    /**
+     * Asynchronously copies `src` to `dest`. By default, `dest` is overwritten if it
+     * already exists.
+     *
+     * No guarantees are made about the atomicity of the copy operation. If an
+     * error occurs after the destination file has been opened for writing, an attempt
+     * will be made to remove the destination.
+     *
+     * ```js
+     * import { constants } from 'fs';
+     * import { copyFile } from 'fs/promises';
+     *
+     * try {
+     *   await copyFile('source.txt', 'destination.txt');
+     *   console.log('source.txt was copied to destination.txt');
+     * } catch {
+     *   console.log('The file could not be copied');
+     * }
+     *
+     * // By using COPYFILE_EXCL, the operation will fail if destination.txt exists.
+     * try {
+     *   await copyFile('source.txt', 'destination.txt', constants.COPYFILE_EXCL);
+     *   console.log('source.txt was copied to destination.txt');
+     * } catch {
+     *   console.log('The file could not be copied');
+     * }
+     * ```
+     * @since v10.0.0
+     * @param src source filename to copy
+     * @param dest destination filename of the copy operation
+     * @param [mode=0] Optional modifiers that specify the behavior of the copy operation. It is possible to create a mask consisting of the bitwise OR of two or more values (e.g.
+     * `fs.constants.COPYFILE_EXCL | fs.constants.COPYFILE_FICLONE`)
+     * @return Fulfills with `undefined` upon success.
+     */
+    function copyFile(src: PathLike, dest: PathLike, mode?: number): Promise<void>;
+    /**
+     * Opens a `FileHandle`.
+     *
+     * Refer to the POSIX [`open(2)`](http://man7.org/linux/man-pages/man2/open.2.html) documentation for more detail.
+     *
+     * Some characters (`< > : " / \ | ? *`) are reserved under Windows as documented
+     * by [Naming Files, Paths, and Namespaces](https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file). Under NTFS, if the filename contains
+     * a colon, Node.js will open a file system stream, as described by [this MSDN page](https://docs.microsoft.com/en-us/windows/desktop/FileIO/using-streams).
+     * @since v10.0.0
+     * @param [flags='r'] See `support of file system `flags``.
+     * @param [mode=0o666] Sets the file mode (permission and sticky bits) if the file is created.
+     * @return Fulfills with a {FileHandle} object.
+     */
+    function open(path: PathLike, flags?: string | number, mode?: Mode): Promise<FileHandle>;
+    /**
+     * Renames `oldPath` to `newPath`.
+     * @since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function rename(oldPath: PathLike, newPath: PathLike): Promise<void>;
+    /**
+     * Truncates (shortens or extends the length) of the content at `path` to `len`bytes.
+     * @since v10.0.0
+     * @param [len=0]
+     * @return Fulfills with `undefined` upon success.
+     */
+    function truncate(path: PathLike, len?: number): Promise<void>;
+    /**
+     * Removes the directory identified by `path`.
+     *
+     * Using `fsPromises.rmdir()` on a file (not a directory) results in the
+     * promise being rejected with an `ENOENT` error on Windows and an `ENOTDIR`error on POSIX.
+     *
+     * To get a behavior similar to the `rm -rf` Unix command, use `fsPromises.rm()` with options `{ recursive: true, force: true }`.
+     * @since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function rmdir(path: PathLike, options?: RmDirOptions): Promise<void>;
+    /**
+     * Removes files and directories (modeled on the standard POSIX `rm` utility).
+     * @since v14.14.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function rm(path: PathLike, options?: RmOptions): Promise<void>;
+    /**
+     * Asynchronously creates a directory.
+     *
+     * The optional `options` argument can be an integer specifying `mode` (permission
+     * and sticky bits), or an object with a `mode` property and a `recursive`property indicating whether parent directories should be created. Calling`fsPromises.mkdir()` when `path` is a directory
+     * that exists results in a
+     * rejection only when `recursive` is false.
+     * @since v10.0.0
+     * @return Upon success, fulfills with `undefined` if `recursive` is `false`, or the first directory path created if `recursive` is `true`.
+     */
+    function mkdir(
+        path: PathLike,
+        options: MakeDirectoryOptions & {
+            recursive: true;
+        }
+    ): Promise<string | undefined>;
+    /**
+     * Asynchronous mkdir(2) - create a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+     * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+     */
+    function mkdir(
+        path: PathLike,
+        options?:
+            | Mode
+            | (MakeDirectoryOptions & {
+                  recursive?: false | undefined;
+              })
+            | null
+    ): Promise<void>;
+    /**
+     * Asynchronous mkdir(2) - create a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+     * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+     */
+    function mkdir(path: PathLike, options?: Mode | MakeDirectoryOptions | null): Promise<string | undefined>;
+    /**
+     * Reads the contents of a directory.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use for
+     * the filenames. If the `encoding` is set to `'buffer'`, the filenames returned
+     * will be passed as `Buffer` objects.
+     *
+     * If `options.withFileTypes` is set to `true`, the resolved array will contain `fs.Dirent` objects.
+     *
+     * ```js
+     * import { readdir } from 'fs/promises';
+     *
+     * try {
+     *   const files = await readdir(path);
+     *   for (const file of files)
+     *     console.log(file);
+     * } catch (err) {
+     *   console.error(err);
+     * }
+     * ```
+     * @since v10.0.0
+     * @return Fulfills with an array of the names of the files in the directory excluding `'.'` and `'..'`.
+     */
+    function readdir(
+        path: PathLike,
+        options?:
+            | (ObjectEncodingOptions & {
+                  withFileTypes?: false | undefined;
+              })
+            | BufferEncoding
+            | null
+    ): Promise<string[]>;
+    /**
+     * Asynchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    function readdir(
+        path: PathLike,
+        options:
+            | {
+                  encoding: 'buffer';
+                  withFileTypes?: false | undefined;
+              }
+            | 'buffer'
+    ): Promise<Buffer[]>;
+    /**
+     * Asynchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    function readdir(
+        path: PathLike,
+        options?:
+            | (ObjectEncodingOptions & {
+                  withFileTypes?: false | undefined;
+              })
+            | BufferEncoding
+            | null
+    ): Promise<string[] | Buffer[]>;
+    /**
+     * Asynchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options If called with `withFileTypes: true` the result data will be an array of Dirent.
+     */
+    function readdir(
+        path: PathLike,
+        options: ObjectEncodingOptions & {
+            withFileTypes: true;
+        }
+    ): Promise<Dirent[]>;
+    /**
+     * Reads the contents of the symbolic link referred to by `path`. See the POSIX [`readlink(2)`](http://man7.org/linux/man-pages/man2/readlink.2.html) documentation for more detail. The promise is
+     * resolved with the`linkString` upon success.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use for
+     * the link path returned. If the `encoding` is set to `'buffer'`, the link path
+     * returned will be passed as a `Buffer` object.
+     * @since v10.0.0
+     * @return Fulfills with the `linkString` upon success.
+     */
+    function readlink(path: PathLike, options?: ObjectEncodingOptions | BufferEncoding | null): Promise<string>;
+    /**
+     * Asynchronous readlink(2) - read value of a symbolic link.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    function readlink(path: PathLike, options: BufferEncodingOption): Promise<Buffer>;
+    /**
+     * Asynchronous readlink(2) - read value of a symbolic link.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    function readlink(path: PathLike, options?: ObjectEncodingOptions | string | null): Promise<string | Buffer>;
+    /**
+     * Creates a symbolic link.
+     *
+     * The `type` argument is only used on Windows platforms and can be one of `'dir'`,`'file'`, or `'junction'`. Windows junction points require the destination path
+     * to be absolute. When using `'junction'`, the `target` argument will
+     * automatically be normalized to absolute path.
+     * @since v10.0.0
+     * @param [type='file']
+     * @return Fulfills with `undefined` upon success.
+     */
+    function symlink(target: PathLike, path: PathLike, type?: string | null): Promise<void>;
+    /**
+     * Equivalent to `fsPromises.stat()` unless `path` refers to a symbolic link,
+     * in which case the link itself is stat-ed, not the file that it refers to.
+     * Refer to the POSIX [`lstat(2)`](http://man7.org/linux/man-pages/man2/lstat.2.html) document for more detail.
+     * @since v10.0.0
+     * @return Fulfills with the {fs.Stats} object for the given symbolic link `path`.
+     */
+    function lstat(
+        path: PathLike,
+        opts?: StatOptions & {
+            bigint?: false | undefined;
+        }
+    ): Promise<Stats>;
+    function lstat(
+        path: PathLike,
+        opts: StatOptions & {
+            bigint: true;
+        }
+    ): Promise<BigIntStats>;
+    function lstat(path: PathLike, opts?: StatOptions): Promise<Stats | BigIntStats>;
+    /**
+     * @since v10.0.0
+     * @return Fulfills with the {fs.Stats} object for the given `path`.
+     */
+    function stat(
+        path: PathLike,
+        opts?: StatOptions & {
+            bigint?: false | undefined;
+        }
+    ): Promise<Stats>;
+    function stat(
+        path: PathLike,
+        opts: StatOptions & {
+            bigint: true;
+        }
+    ): Promise<BigIntStats>;
+    function stat(path: PathLike, opts?: StatOptions): Promise<Stats | BigIntStats>;
+    /**
+     * Creates a new link from the `existingPath` to the `newPath`. See the POSIX [`link(2)`](http://man7.org/linux/man-pages/man2/link.2.html) documentation for more detail.
+     * @since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function link(existingPath: PathLike, newPath: PathLike): Promise<void>;
+    /**
+     * If `path` refers to a symbolic link, then the link is removed without affecting
+     * the file or directory to which that link refers. If the `path` refers to a file
+     * path that is not a symbolic link, the file is deleted. See the POSIX [`unlink(2)`](http://man7.org/linux/man-pages/man2/unlink.2.html) documentation for more detail.
+     * @since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function unlink(path: PathLike): Promise<void>;
+    /**
+     * Changes the permissions of a file.
+     * @since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function chmod(path: PathLike, mode: Mode): Promise<void>;
+    /**
+     * Changes the permissions on a symbolic link.
+     *
+     * This method is only implemented on macOS.
+     * @deprecated Since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function lchmod(path: PathLike, mode: Mode): Promise<void>;
+    /**
+     * Changes the ownership on a symbolic link.
+     * @since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function lchown(path: PathLike, uid: number, gid: number): Promise<void>;
+    /**
+     * Changes the access and modification times of a file in the same way as `fsPromises.utimes()`, with the difference that if the path refers to a
+     * symbolic link, then the link is not dereferenced: instead, the timestamps of
+     * the symbolic link itself are changed.
+     * @since v14.5.0, v12.19.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function lutimes(path: PathLike, atime: TimeLike, mtime: TimeLike): Promise<void>;
+    /**
+     * Changes the ownership of a file.
+     * @since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function chown(path: PathLike, uid: number, gid: number): Promise<void>;
+    /**
+     * Change the file system timestamps of the object referenced by `path`.
+     *
+     * The `atime` and `mtime` arguments follow these rules:
+     *
+     * * Values can be either numbers representing Unix epoch time, `Date`s, or a
+     * numeric string like `'123456789.0'`.
+     * * If the value can not be converted to a number, or is `NaN`, `Infinity` or`-Infinity`, an `Error` will be thrown.
+     * @since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function utimes(path: PathLike, atime: TimeLike, mtime: TimeLike): Promise<void>;
+    /**
+     * Determines the actual location of `path` using the same semantics as the`fs.realpath.native()` function.
+     *
+     * Only paths that can be converted to UTF8 strings are supported.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use for
+     * the path. If the `encoding` is set to `'buffer'`, the path returned will be
+     * passed as a `Buffer` object.
+     *
+     * On Linux, when Node.js is linked against musl libc, the procfs file system must
+     * be mounted on `/proc` in order for this function to work. Glibc does not have
+     * this restriction.
+     * @since v10.0.0
+     * @return Fulfills with the resolved path upon success.
+     */
+    function realpath(path: PathLike, options?: ObjectEncodingOptions | BufferEncoding | null): Promise<string>;
+    /**
+     * Asynchronous realpath(3) - return the canonicalized absolute pathname.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    function realpath(path: PathLike, options: BufferEncodingOption): Promise<Buffer>;
+    /**
+     * Asynchronous realpath(3) - return the canonicalized absolute pathname.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    function realpath(path: PathLike, options?: ObjectEncodingOptions | BufferEncoding | null): Promise<string | Buffer>;
+    /**
+     * Creates a unique temporary directory. A unique directory name is generated by
+     * appending six random characters to the end of the provided `prefix`. Due to
+     * platform inconsistencies, avoid trailing `X` characters in `prefix`. Some
+     * platforms, notably the BSDs, can return more than six random characters, and
+     * replace trailing `X` characters in `prefix` with random characters.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use.
+     *
+     * ```js
+     * import { mkdtemp } from 'fs/promises';
+     *
+     * try {
+     *   await mkdtemp(path.join(os.tmpdir(), 'foo-'));
+     * } catch (err) {
+     *   console.error(err);
+     * }
+     * ```
+     *
+     * The `fsPromises.mkdtemp()` method will append the six randomly selected
+     * characters directly to the `prefix` string. For instance, given a directory`/tmp`, if the intention is to create a temporary directory _within_`/tmp`, the`prefix` must end with a trailing
+     * platform-specific path separator
+     * (`require('path').sep`).
+     * @since v10.0.0
+     * @return Fulfills with a string containing the filesystem path of the newly created temporary directory.
+     */
+    function mkdtemp(prefix: string, options?: ObjectEncodingOptions | BufferEncoding | null): Promise<string>;
+    /**
+     * Asynchronously creates a unique temporary directory.
+     * Generates six random characters to be appended behind a required `prefix` to create a unique temporary directory.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    function mkdtemp(prefix: string, options: BufferEncodingOption): Promise<Buffer>;
+    /**
+     * Asynchronously creates a unique temporary directory.
+     * Generates six random characters to be appended behind a required `prefix` to create a unique temporary directory.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    function mkdtemp(prefix: string, options?: ObjectEncodingOptions | BufferEncoding | null): Promise<string | Buffer>;
+    /**
+     * Asynchronously writes data to a file, replacing the file if it already exists.`data` can be a string, a buffer, an
+     * [AsyncIterable](https://tc39.github.io/ecma262/#sec-asynciterable-interface) or
+     * [Iterable](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#The_iterable_protocol) object.
+     *
+     * The `encoding` option is ignored if `data` is a buffer.
+     *
+     * If `options` is a string, then it specifies the encoding.
+     *
+     * The `mode` option only affects the newly created file. See `fs.open()` for more details.
+     *
+     * Any specified `FileHandle` has to support writing.
+     *
+     * It is unsafe to use `fsPromises.writeFile()` multiple times on the same file
+     * without waiting for the promise to be settled.
+     *
+     * Similarly to `fsPromises.readFile` \- `fsPromises.writeFile` is a convenience
+     * method that performs multiple `write` calls internally to write the buffer
+     * passed to it. For performance sensitive code consider using `fs.createWriteStream()` or `filehandle.createWriteStream()`.
+     *
+     * It is possible to use an `AbortSignal` to cancel an `fsPromises.writeFile()`.
+     * Cancelation is "best effort", and some amount of data is likely still
+     * to be written.
+     *
+     * ```js
+     * import { writeFile } from 'fs/promises';
+     * import { Buffer } from 'buffer';
+     *
+     * try {
+     *   const controller = new AbortController();
+     *   const { signal } = controller;
+     *   const data = new Uint8Array(Buffer.from('Hello Node.js'));
+     *   const promise = writeFile('message.txt', data, { signal });
+     *
+     *   // Abort the request before the promise settles.
+     *   controller.abort();
+     *
+     *   await promise;
+     * } catch (err) {
+     *   // When a request is aborted - err is an AbortError
+     *   console.error(err);
+     * }
+     * ```
+     *
+     * Aborting an ongoing request does not abort individual operating
+     * system requests but rather the internal buffering `fs.writeFile` performs.
+     * @since v10.0.0
+     * @param file filename or `FileHandle`
+     * @return Fulfills with `undefined` upon success.
+     */
+    function writeFile(
+        file: PathLike | FileHandle,
+        data: string | NodeJS.ArrayBufferView | Iterable<string | NodeJS.ArrayBufferView> | AsyncIterable<string | NodeJS.ArrayBufferView> | Stream,
+        options?:
+            | (ObjectEncodingOptions & {
+                  mode?: Mode | undefined;
+                  flag?: OpenMode | undefined;
+              } & Abortable)
+            | BufferEncoding
+            | null
+    ): Promise<void>;
+    /**
+     * Asynchronously append data to a file, creating the file if it does not yet
+     * exist. `data` can be a string or a `Buffer`.
+     *
+     * If `options` is a string, then it specifies the `encoding`.
+     *
+     * The `mode` option only affects the newly created file. See `fs.open()` for more details.
+     *
+     * The `path` may be specified as a `FileHandle` that has been opened
+     * for appending (using `fsPromises.open()`).
+     * @since v10.0.0
+     * @param path filename or {FileHandle}
+     * @return Fulfills with `undefined` upon success.
+     */
+    function appendFile(path: PathLike | FileHandle, data: string | Uint8Array, options?: (ObjectEncodingOptions & FlagAndOpenMode) | BufferEncoding | null): Promise<void>;
+    /**
+     * Asynchronously reads the entire contents of a file.
+     *
+     * If no encoding is specified (using `options.encoding`), the data is returned
+     * as a `Buffer` object. Otherwise, the data will be a string.
+     *
+     * If `options` is a string, then it specifies the encoding.
+     *
+     * When the `path` is a directory, the behavior of `fsPromises.readFile()` is
+     * platform-specific. On macOS, Linux, and Windows, the promise will be rejected
+     * with an error. On FreeBSD, a representation of the directory's contents will be
+     * returned.
+     *
+     * It is possible to abort an ongoing `readFile` using an `AbortSignal`. If a
+     * request is aborted the promise returned is rejected with an `AbortError`:
+     *
+     * ```js
+     * import { readFile } from 'fs/promises';
+     *
+     * try {
+     *   const controller = new AbortController();
+     *   const { signal } = controller;
+     *   const promise = readFile(fileName, { signal });
+     *
+     *   // Abort the request before the promise settles.
+     *   controller.abort();
+     *
+     *   await promise;
+     * } catch (err) {
+     *   // When a request is aborted - err is an AbortError
+     *   console.error(err);
+     * }
+     * ```
+     *
+     * Aborting an ongoing request does not abort individual operating
+     * system requests but rather the internal buffering `fs.readFile` performs.
+     *
+     * Any specified `FileHandle` has to support reading.
+     * @since v10.0.0
+     * @param path filename or `FileHandle`
+     * @return Fulfills with the contents of the file.
+     */
+    function readFile(
+        path: PathLike | FileHandle,
+        options?:
+            | ({
+                  encoding?: null | undefined;
+                  flag?: OpenMode | undefined;
+              } & Abortable)
+            | null
+    ): Promise<Buffer>;
+    /**
+     * Asynchronously reads the entire contents of a file.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a `FileHandle` is provided, the underlying file will _not_ be closed automatically.
+     * @param options An object that may contain an optional flag.
+     * If a flag is not provided, it defaults to `'r'`.
+     */
+    function readFile(
+        path: PathLike | FileHandle,
+        options:
+            | ({
+                  encoding: BufferEncoding;
+                  flag?: OpenMode | undefined;
+              } & Abortable)
+            | BufferEncoding
+    ): Promise<string>;
+    /**
+     * Asynchronously reads the entire contents of a file.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a `FileHandle` is provided, the underlying file will _not_ be closed automatically.
+     * @param options An object that may contain an optional flag.
+     * If a flag is not provided, it defaults to `'r'`.
+     */
+    function readFile(
+        path: PathLike | FileHandle,
+        options?:
+            | (ObjectEncodingOptions &
+                  Abortable & {
+                      flag?: OpenMode | undefined;
+                  })
+            | BufferEncoding
+            | null
+    ): Promise<string | Buffer>;
+    /**
+     * Asynchronously open a directory for iterative scanning. See the POSIX [`opendir(3)`](http://man7.org/linux/man-pages/man3/opendir.3.html) documentation for more detail.
+     *
+     * Creates an `fs.Dir`, which contains all further functions for reading from
+     * and cleaning up the directory.
+     *
+     * The `encoding` option sets the encoding for the `path` while opening the
+     * directory and subsequent read operations.
+     *
+     * Example using async iteration:
+     *
+     * ```js
+     * import { opendir } from 'fs/promises';
+     *
+     * try {
+     *   const dir = await opendir('./');
+     *   for await (const dirent of dir)
+     *     console.log(dirent.name);
+     * } catch (err) {
+     *   console.error(err);
+     * }
+     * ```
+     *
+     * When using the async iterator, the `fs.Dir` object will be automatically
+     * closed after the iterator exits.
+     * @since v12.12.0
+     * @return Fulfills with an {fs.Dir}.
+     */
+    function opendir(path: PathLike, options?: OpenDirOptions): Promise<Dir>;
+    /**
+     * Returns an async iterator that watches for changes on `filename`, where `filename`is either a file or a directory.
+     *
+     * ```js
+     * const { watch } = require('fs/promises');
+     *
+     * const ac = new AbortController();
+     * const { signal } = ac;
+     * setTimeout(() => ac.abort(), 10000);
+     *
+     * (async () => {
+     *   try {
+     *     const watcher = watch(__filename, { signal });
+     *     for await (const event of watcher)
+     *       console.log(event);
+     *   } catch (err) {
+     *     if (err.name === 'AbortError')
+     *       return;
+     *     throw err;
+     *   }
+     * })();
+     * ```
+     *
+     * On most platforms, `'rename'` is emitted whenever a filename appears or
+     * disappears in the directory.
+     *
+     * All the `caveats` for `fs.watch()` also apply to `fsPromises.watch()`.
+     * @since v15.9.0, v14.18.0
+     * @return of objects with the properties:
+     */
+    function watch(
+        filename: PathLike,
+        options:
+            | (WatchOptions & {
+                  encoding: 'buffer';
+              })
+            | 'buffer'
+    ): AsyncIterable<FileChangeInfo<Buffer>>;
+    /**
+     * Watch for changes on `filename`, where `filename` is either a file or a directory, returning an `FSWatcher`.
+     * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the encoding for the filename provided to the listener, or an object optionally specifying encoding, persistent, and recursive options.
+     * If `encoding` is not supplied, the default of `'utf8'` is used.
+     * If `persistent` is not supplied, the default of `true` is used.
+     * If `recursive` is not supplied, the default of `false` is used.
+     */
+    function watch(filename: PathLike, options?: WatchOptions | BufferEncoding): AsyncIterable<FileChangeInfo<string>>;
+    /**
+     * Watch for changes on `filename`, where `filename` is either a file or a directory, returning an `FSWatcher`.
+     * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the encoding for the filename provided to the listener, or an object optionally specifying encoding, persistent, and recursive options.
+     * If `encoding` is not supplied, the default of `'utf8'` is used.
+     * If `persistent` is not supplied, the default of `true` is used.
+     * If `recursive` is not supplied, the default of `false` is used.
+     */
+    function watch(filename: PathLike, options: WatchOptions | string): AsyncIterable<FileChangeInfo<string>> | AsyncIterable<FileChangeInfo<Buffer>>;
+    /**
+     * Asynchronously copies the entire directory structure from `src` to `dest`,
+     * including subdirectories and files.
+     *
+     * When copying a directory to another directory, globs are not supported and
+     * behavior is similar to `cp dir1/ dir2/`.
+     * @since v16.7.0
+     * @experimental
+     * @param src source path to copy.
+     * @param dest destination path to copy to.
+     * @return Fulfills with `undefined` upon success.
+     */
+    function cp(source: string | URL, destination: string | URL, opts?: CopyOptions): Promise<void>;
+}
+declare module 'node:fs/promises' {
+    export * from 'fs/promises';
+}
diff --git a/igv_component/node_modules/@types/node/globals.d.ts b/igv_component/node_modules/@types/node/globals.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..903786116e9d9f831dafeb64b0274c71fae0f906
--- /dev/null
+++ b/igv_component/node_modules/@types/node/globals.d.ts
@@ -0,0 +1,296 @@
+// Declare "static" methods in Error
+interface ErrorConstructor {
+    /** Create .stack property on a target object */
+    captureStackTrace(targetObject: object, constructorOpt?: Function): void;
+
+    /**
+     * Optional override for formatting stack traces
+     *
+     * @see https://v8.dev/docs/stack-trace-api#customizing-stack-traces
+     */
+    prepareStackTrace?: ((err: Error, stackTraces: NodeJS.CallSite[]) => any) | undefined;
+
+    stackTraceLimit: number;
+}
+
+/*-----------------------------------------------*
+ *                                               *
+ *                   GLOBAL                      *
+ *                                               *
+ ------------------------------------------------*/
+
+// For backwards compability
+interface NodeRequire extends NodeJS.Require { }
+interface RequireResolve extends NodeJS.RequireResolve { }
+interface NodeModule extends NodeJS.Module { }
+
+declare var process: NodeJS.Process;
+declare var console: Console;
+
+declare var __filename: string;
+declare var __dirname: string;
+
+declare var require: NodeRequire;
+declare var module: NodeModule;
+
+// Same as module.exports
+declare var exports: any;
+
+/**
+ * Only available if `--expose-gc` is passed to the process.
+ */
+declare var gc: undefined | (() => void);
+
+//#region borrowed
+// from https://github.com/microsoft/TypeScript/blob/38da7c600c83e7b31193a62495239a0fe478cb67/lib/lib.webworker.d.ts#L633 until moved to separate lib
+/** A controller object that allows you to abort one or more DOM requests as and when desired. */
+interface AbortController {
+    /**
+     * Returns the AbortSignal object associated with this object.
+     */
+
+    readonly signal: AbortSignal;
+    /**
+     * Invoking this method will set this object's AbortSignal's aborted flag and signal to any observers that the associated activity is to be aborted.
+     */
+    abort(): void;
+}
+
+/** A signal object that allows you to communicate with a DOM request (such as a Fetch) and abort it if required via an AbortController object. */
+interface AbortSignal {
+    /**
+     * Returns true if this AbortSignal's AbortController has signaled to abort, and false otherwise.
+     */
+    readonly aborted: boolean;
+}
+
+declare var AbortController: {
+    prototype: AbortController;
+    new(): AbortController;
+};
+
+declare var AbortSignal: {
+    prototype: AbortSignal;
+    new(): AbortSignal;
+    // TODO: Add abort() static
+    timeout(milliseconds: number): AbortSignal;
+};
+//#endregion borrowed
+
+//#region ArrayLike.at()
+interface RelativeIndexable<T> {
+    /**
+     * Takes an integer value and returns the item at that index,
+     * allowing for positive and negative integers.
+     * Negative integers count back from the last item in the array.
+     */
+    at(index: number): T | undefined;
+}
+interface String extends RelativeIndexable<string> {}
+interface Array<T> extends RelativeIndexable<T> {}
+interface ReadonlyArray<T> extends RelativeIndexable<T> {}
+interface Int8Array extends RelativeIndexable<number> {}
+interface Uint8Array extends RelativeIndexable<number> {}
+interface Uint8ClampedArray extends RelativeIndexable<number> {}
+interface Int16Array extends RelativeIndexable<number> {}
+interface Uint16Array extends RelativeIndexable<number> {}
+interface Int32Array extends RelativeIndexable<number> {}
+interface Uint32Array extends RelativeIndexable<number> {}
+interface Float32Array extends RelativeIndexable<number> {}
+interface Float64Array extends RelativeIndexable<number> {}
+interface BigInt64Array extends RelativeIndexable<bigint> {}
+interface BigUint64Array extends RelativeIndexable<bigint> {}
+//#endregion ArrayLike.at() end
+
+/**
+ * @since v17.0.0
+ *
+ * Creates a deep clone of an object.
+ */
+declare function structuredClone<T>(
+    value: T,
+    transfer?: { transfer: ReadonlyArray<import('worker_threads').TransferListItem> },
+): T;
+
+/*----------------------------------------------*
+*                                               *
+*               GLOBAL INTERFACES               *
+*                                               *
+*-----------------------------------------------*/
+declare namespace NodeJS {
+    interface CallSite {
+        /**
+         * Value of "this"
+         */
+        getThis(): unknown;
+
+        /**
+         * Type of "this" as a string.
+         * This is the name of the function stored in the constructor field of
+         * "this", if available.  Otherwise the object's [[Class]] internal
+         * property.
+         */
+        getTypeName(): string | null;
+
+        /**
+         * Current function
+         */
+        getFunction(): Function | undefined;
+
+        /**
+         * Name of the current function, typically its name property.
+         * If a name property is not available an attempt will be made to try
+         * to infer a name from the function's context.
+         */
+        getFunctionName(): string | null;
+
+        /**
+         * Name of the property [of "this" or one of its prototypes] that holds
+         * the current function
+         */
+        getMethodName(): string | null;
+
+        /**
+         * Name of the script [if this function was defined in a script]
+         */
+        getFileName(): string | null;
+
+        /**
+         * Current line number [if this function was defined in a script]
+         */
+        getLineNumber(): number | null;
+
+        /**
+         * Current column number [if this function was defined in a script]
+         */
+        getColumnNumber(): number | null;
+
+        /**
+         * A call site object representing the location where eval was called
+         * [if this function was created using a call to eval]
+         */
+        getEvalOrigin(): string | undefined;
+
+        /**
+         * Is this a toplevel invocation, that is, is "this" the global object?
+         */
+        isToplevel(): boolean;
+
+        /**
+         * Does this call take place in code defined by a call to eval?
+         */
+        isEval(): boolean;
+
+        /**
+         * Is this call in native V8 code?
+         */
+        isNative(): boolean;
+
+        /**
+         * Is this a constructor call?
+         */
+        isConstructor(): boolean;
+    }
+
+    interface ErrnoException extends Error {
+        errno?: number | undefined;
+        code?: string | undefined;
+        path?: string | undefined;
+        syscall?: string | undefined;
+    }
+
+    interface ReadableStream extends EventEmitter {
+        readable: boolean;
+        read(size?: number): string | Buffer;
+        setEncoding(encoding: BufferEncoding): this;
+        pause(): this;
+        resume(): this;
+        isPaused(): boolean;
+        pipe<T extends WritableStream>(destination: T, options?: { end?: boolean | undefined; }): T;
+        unpipe(destination?: WritableStream): this;
+        unshift(chunk: string | Uint8Array, encoding?: BufferEncoding): void;
+        wrap(oldStream: ReadableStream): this;
+        [Symbol.asyncIterator](): AsyncIterableIterator<string | Buffer>;
+    }
+
+    interface WritableStream extends EventEmitter {
+        writable: boolean;
+        write(buffer: Uint8Array | string, cb?: (err?: Error | null) => void): boolean;
+        write(str: string, encoding?: BufferEncoding, cb?: (err?: Error | null) => void): boolean;
+        end(cb?: () => void): this;
+        end(data: string | Uint8Array, cb?: () => void): this;
+        end(str: string, encoding?: BufferEncoding, cb?: () => void): this;
+    }
+
+    interface ReadWriteStream extends ReadableStream, WritableStream { }
+
+    interface RefCounted {
+        ref(): this;
+        unref(): this;
+    }
+
+    type TypedArray =
+        | Uint8Array
+        | Uint8ClampedArray
+        | Uint16Array
+        | Uint32Array
+        | Int8Array
+        | Int16Array
+        | Int32Array
+        | BigUint64Array
+        | BigInt64Array
+        | Float32Array
+        | Float64Array;
+    type ArrayBufferView = TypedArray | DataView;
+
+    interface Require {
+        (id: string): any;
+        resolve: RequireResolve;
+        cache: Dict<NodeModule>;
+        /**
+         * @deprecated
+         */
+        extensions: RequireExtensions;
+        main: Module | undefined;
+    }
+
+    interface RequireResolve {
+        (id: string, options?: { paths?: string[] | undefined; }): string;
+        paths(request: string): string[] | null;
+    }
+
+    interface RequireExtensions extends Dict<(m: Module, filename: string) => any> {
+        '.js': (m: Module, filename: string) => any;
+        '.json': (m: Module, filename: string) => any;
+        '.node': (m: Module, filename: string) => any;
+    }
+    interface Module {
+        /**
+         * `true` if the module is running during the Node.js preload
+         */
+        isPreloading: boolean;
+        exports: any;
+        require: Require;
+        id: string;
+        filename: string;
+        loaded: boolean;
+        /** @deprecated since v14.6.0 Please use `require.main` and `module.children` instead. */
+        parent: Module | null | undefined;
+        children: Module[];
+        /**
+         * @since v11.14.0
+         *
+         * The directory name of the module. This is usually the same as the path.dirname() of the module.id.
+         */
+        path: string;
+        paths: string[];
+    }
+
+    interface Dict<T> {
+        [key: string]: T | undefined;
+    }
+
+    interface ReadOnlyDict<T> {
+        readonly [key: string]: T | undefined;
+    }
+}
diff --git a/igv_component/node_modules/@types/node/globals.global.d.ts b/igv_component/node_modules/@types/node/globals.global.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..ef1198c05024940c44e3c1a6429c26091fe2a94f
--- /dev/null
+++ b/igv_component/node_modules/@types/node/globals.global.d.ts
@@ -0,0 +1 @@
+declare var global: typeof globalThis;
diff --git a/igv_component/node_modules/@types/node/http.d.ts b/igv_component/node_modules/@types/node/http.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..24bc5e78ddb06406f7a153cd76c47058a5b9de9b
--- /dev/null
+++ b/igv_component/node_modules/@types/node/http.d.ts
@@ -0,0 +1,1553 @@
+/**
+ * To use the HTTP server and client one must `require('http')`.
+ *
+ * The HTTP interfaces in Node.js are designed to support many features
+ * of the protocol which have been traditionally difficult to use.
+ * In particular, large, possibly chunk-encoded, messages. The interface is
+ * careful to never buffer entire requests or responses, so the
+ * user is able to stream data.
+ *
+ * HTTP message headers are represented by an object like this:
+ *
+ * ```js
+ * { 'content-length': '123',
+ *   'content-type': 'text/plain',
+ *   'connection': 'keep-alive',
+ *   'host': 'example.com',
+ *   'accept': '*' }
+ * ```
+ *
+ * Keys are lowercased. Values are not modified.
+ *
+ * In order to support the full spectrum of possible HTTP applications, the Node.js
+ * HTTP API is very low-level. It deals with stream handling and message
+ * parsing only. It parses a message into headers and body but it does not
+ * parse the actual headers or the body.
+ *
+ * See `message.headers` for details on how duplicate headers are handled.
+ *
+ * The raw headers as they were received are retained in the `rawHeaders`property, which is an array of `[key, value, key2, value2, ...]`. For
+ * example, the previous message header object might have a `rawHeaders`list like the following:
+ *
+ * ```js
+ * [ 'ConTent-Length', '123456',
+ *   'content-LENGTH', '123',
+ *   'content-type', 'text/plain',
+ *   'CONNECTION', 'keep-alive',
+ *   'Host', 'example.com',
+ *   'accepT', '*' ]
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/http.js)
+ */
+declare module 'http' {
+    import * as stream from 'node:stream';
+    import { URL } from 'node:url';
+    import { TcpSocketConnectOpts, Socket, Server as NetServer, LookupFunction } from 'node:net';
+    // incoming headers will never contain number
+    interface IncomingHttpHeaders extends NodeJS.Dict<string | string[]> {
+        accept?: string | undefined;
+        'accept-language'?: string | undefined;
+        'accept-patch'?: string | undefined;
+        'accept-ranges'?: string | undefined;
+        'access-control-allow-credentials'?: string | undefined;
+        'access-control-allow-headers'?: string | undefined;
+        'access-control-allow-methods'?: string | undefined;
+        'access-control-allow-origin'?: string | undefined;
+        'access-control-expose-headers'?: string | undefined;
+        'access-control-max-age'?: string | undefined;
+        'access-control-request-headers'?: string | undefined;
+        'access-control-request-method'?: string | undefined;
+        age?: string | undefined;
+        allow?: string | undefined;
+        'alt-svc'?: string | undefined;
+        authorization?: string | undefined;
+        'cache-control'?: string | undefined;
+        connection?: string | undefined;
+        'content-disposition'?: string | undefined;
+        'content-encoding'?: string | undefined;
+        'content-language'?: string | undefined;
+        'content-length'?: string | undefined;
+        'content-location'?: string | undefined;
+        'content-range'?: string | undefined;
+        'content-type'?: string | undefined;
+        cookie?: string | undefined;
+        date?: string | undefined;
+        etag?: string | undefined;
+        expect?: string | undefined;
+        expires?: string | undefined;
+        forwarded?: string | undefined;
+        from?: string | undefined;
+        host?: string | undefined;
+        'if-match'?: string | undefined;
+        'if-modified-since'?: string | undefined;
+        'if-none-match'?: string | undefined;
+        'if-unmodified-since'?: string | undefined;
+        'last-modified'?: string | undefined;
+        location?: string | undefined;
+        origin?: string | undefined;
+        pragma?: string | undefined;
+        'proxy-authenticate'?: string | undefined;
+        'proxy-authorization'?: string | undefined;
+        'public-key-pins'?: string | undefined;
+        range?: string | undefined;
+        referer?: string | undefined;
+        'retry-after'?: string | undefined;
+        'sec-websocket-accept'?: string | undefined;
+        'sec-websocket-extensions'?: string | undefined;
+        'sec-websocket-key'?: string | undefined;
+        'sec-websocket-protocol'?: string | undefined;
+        'sec-websocket-version'?: string | undefined;
+        'set-cookie'?: string[] | undefined;
+        'strict-transport-security'?: string | undefined;
+        tk?: string | undefined;
+        trailer?: string | undefined;
+        'transfer-encoding'?: string | undefined;
+        upgrade?: string | undefined;
+        'user-agent'?: string | undefined;
+        vary?: string | undefined;
+        via?: string | undefined;
+        warning?: string | undefined;
+        'www-authenticate'?: string | undefined;
+    }
+    // outgoing headers allows numbers (as they are converted internally to strings)
+    type OutgoingHttpHeader = number | string | string[];
+    interface OutgoingHttpHeaders extends NodeJS.Dict<OutgoingHttpHeader> {}
+    interface ClientRequestArgs {
+        signal?: AbortSignal | undefined;
+        protocol?: string | null | undefined;
+        host?: string | null | undefined;
+        hostname?: string | null | undefined;
+        family?: number | undefined;
+        port?: number | string | null | undefined;
+        defaultPort?: number | string | undefined;
+        localAddress?: string | undefined;
+        socketPath?: string | undefined;
+        /**
+         * @default 8192
+         */
+        maxHeaderSize?: number | undefined;
+        method?: string | undefined;
+        path?: string | null | undefined;
+        headers?: OutgoingHttpHeaders | undefined;
+        auth?: string | null | undefined;
+        agent?: Agent | boolean | undefined;
+        _defaultAgent?: Agent | undefined;
+        timeout?: number | undefined;
+        setHost?: boolean | undefined;
+        // https://github.com/nodejs/node/blob/master/lib/_http_client.js#L278
+        createConnection?:
+            | ((options: ClientRequestArgs, oncreate: (err: Error, socket: Socket) => void) => Socket)
+            | undefined;
+        lookup?: LookupFunction | undefined;
+    }
+    interface ServerOptions<
+        Request extends typeof IncomingMessage = typeof IncomingMessage,
+        Response extends typeof ServerResponse = typeof ServerResponse,
+    > {
+        IncomingMessage?: Request | undefined;
+        ServerResponse?: Response | undefined;
+        /**
+         * Optionally overrides the value of
+         * `--max-http-header-size` for requests received by this server, i.e.
+         * the maximum length of request headers in bytes.
+         * @default 8192
+         */
+        maxHeaderSize?: number | undefined;
+        /**
+         * Use an insecure HTTP parser that accepts invalid HTTP headers when true.
+         * Using the insecure parser should be avoided.
+         * See --insecure-http-parser for more information.
+         * @default false
+         */
+        insecureHTTPParser?: boolean | undefined;
+        /**
+         * If set to `true`, it disables the use of Nagle's algorithm immediately after a new incoming connection is received.
+         * @default false
+         * @since v16.5.0
+         */
+        noDelay?: boolean | undefined;
+        /**
+         * If set to `true`, it enables keep-alive functionality on the socket immediately after a new incoming connection is received,
+         * similarly on what is done in `socket.setKeepAlive([enable][, initialDelay])`.
+         * @default false
+         * @since v16.5.0
+         */
+        keepAlive?: boolean | undefined;
+        /**
+         * If set to a positive number, it sets the initial delay before the first keepalive probe is sent on an idle socket.
+         * @default 0
+         * @since v16.5.0
+         */
+        keepAliveInitialDelay?: number | undefined;
+    }
+    type RequestListener<
+        Request extends typeof IncomingMessage = typeof IncomingMessage,
+        Response extends typeof ServerResponse = typeof ServerResponse,
+    > = (req: InstanceType<Request>, res: InstanceType<Response> & { req: InstanceType<Request> }) => void;
+    /**
+     * @since v0.1.17
+     */
+    class Server<
+        Request extends typeof IncomingMessage = typeof IncomingMessage,
+        Response extends typeof ServerResponse = typeof ServerResponse,
+    > extends NetServer {
+        constructor(requestListener?: RequestListener<Request, Response>);
+        constructor(options: ServerOptions<Request, Response>, requestListener?: RequestListener<Request, Response>);
+        /**
+         * Sets the timeout value for sockets, and emits a `'timeout'` event on
+         * the Server object, passing the socket as an argument, if a timeout
+         * occurs.
+         *
+         * If there is a `'timeout'` event listener on the Server object, then it
+         * will be called with the timed-out socket as an argument.
+         *
+         * By default, the Server does not timeout sockets. However, if a callback
+         * is assigned to the Server's `'timeout'` event, timeouts must be handled
+         * explicitly.
+         * @since v0.9.12
+         * @param [msecs=0 (no timeout)]
+         */
+        setTimeout(msecs?: number, callback?: () => void): this;
+        setTimeout(callback: () => void): this;
+        /**
+         * Limits maximum incoming headers count. If set to 0, no limit will be applied.
+         * @since v0.7.0
+         */
+        maxHeadersCount: number | null;
+        /**
+         * The maximum number of requests socket can handle
+         * before closing keep alive connection.
+         *
+         * A value of `0` will disable the limit.
+         *
+         * When the limit is reached it will set the `Connection` header value to `close`,
+         * but will not actually close the connection, subsequent requests sent
+         * after the limit is reached will get `503 Service Unavailable` as a response.
+         * @since v16.10.0
+         */
+        maxRequestsPerSocket: number | null;
+        /**
+         * The number of milliseconds of inactivity before a socket is presumed
+         * to have timed out.
+         *
+         * A value of `0` will disable the timeout behavior on incoming connections.
+         *
+         * The socket timeout logic is set up on connection, so changing this
+         * value only affects new connections to the server, not any existing connections.
+         * @since v0.9.12
+         */
+        timeout: number;
+        /**
+         * Limit the amount of time the parser will wait to receive the complete HTTP
+         * headers.
+         *
+         * If the timeout expires, the server responds with status 408 without
+         * forwarding the request to the request listener and then closes the connection.
+         *
+         * It must be set to a non-zero value (e.g. 120 seconds) to protect against
+         * potential Denial-of-Service attacks in case the server is deployed without a
+         * reverse proxy in front.
+         * @since v11.3.0, v10.14.0
+         */
+        headersTimeout: number;
+        /**
+         * The number of milliseconds of inactivity a server needs to wait for additional
+         * incoming data, after it has finished writing the last response, before a socket
+         * will be destroyed. If the server receives new data before the keep-alive
+         * timeout has fired, it will reset the regular inactivity timeout, i.e.,`server.timeout`.
+         *
+         * A value of `0` will disable the keep-alive timeout behavior on incoming
+         * connections.
+         * A value of `0` makes the http server behave similarly to Node.js versions prior
+         * to 8.0.0, which did not have a keep-alive timeout.
+         *
+         * The socket timeout logic is set up on connection, so changing this value only
+         * affects new connections to the server, not any existing connections.
+         * @since v8.0.0
+         */
+        keepAliveTimeout: number;
+        /**
+         * Sets the timeout value in milliseconds for receiving the entire request from
+         * the client.
+         *
+         * If the timeout expires, the server responds with status 408 without
+         * forwarding the request to the request listener and then closes the connection.
+         *
+         * It must be set to a non-zero value (e.g. 120 seconds) to protect against
+         * potential Denial-of-Service attacks in case the server is deployed without a
+         * reverse proxy in front.
+         * @since v14.11.0
+         */
+        requestTimeout: number;
+        /**
+         * Closes all connections connected to this server.
+         * @since v18.2.0
+         */
+        closeAllConnections(): void;
+        /**
+         * Closes all connections connected to this server which are not sending a request or waiting for a response.
+         * @since v18.2.0
+         */
+        closeIdleConnections(): void;
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'connection', listener: (socket: Socket) => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'listening', listener: () => void): this;
+        addListener(event: 'checkContinue', listener: RequestListener<Request, Response>): this;
+        addListener(event: 'checkExpectation', listener: RequestListener<Request, Response>): this;
+        addListener(event: 'clientError', listener: (err: Error, socket: stream.Duplex) => void): this;
+        addListener(
+            event: 'connect',
+            listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void,
+        ): this;
+        addListener(event: 'request', listener: RequestListener<Request, Response>): this;
+        addListener(
+            event: 'upgrade',
+            listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void,
+        ): this;
+        emit(event: string, ...args: any[]): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'connection', socket: Socket): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'listening'): boolean;
+        emit(
+            event: 'checkContinue',
+            req: InstanceType<Request>,
+            res: InstanceType<Response> & { req: InstanceType<Request> },
+        ): boolean;
+        emit(
+            event: 'checkExpectation',
+            req: InstanceType<Request>,
+            res: InstanceType<Response> & { req: InstanceType<Request> },
+        ): boolean;
+        emit(event: 'clientError', err: Error, socket: stream.Duplex): boolean;
+        emit(event: 'connect', req: InstanceType<Request>, socket: stream.Duplex, head: Buffer): boolean;
+        emit(
+            event: 'request',
+            req: InstanceType<Request>,
+            res: InstanceType<Response> & { req: InstanceType<Request> },
+        ): boolean;
+        emit(event: 'upgrade', req: InstanceType<Request>, socket: stream.Duplex, head: Buffer): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'connection', listener: (socket: Socket) => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'listening', listener: () => void): this;
+        on(event: 'checkContinue', listener: RequestListener<Request, Response>): this;
+        on(event: 'checkExpectation', listener: RequestListener<Request, Response>): this;
+        on(event: 'clientError', listener: (err: Error, socket: stream.Duplex) => void): this;
+        on(event: 'connect', listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void): this;
+        on(event: 'request', listener: RequestListener<Request, Response>): this;
+        on(event: 'upgrade', listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'connection', listener: (socket: Socket) => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'listening', listener: () => void): this;
+        once(event: 'checkContinue', listener: RequestListener<Request, Response>): this;
+        once(event: 'checkExpectation', listener: RequestListener<Request, Response>): this;
+        once(event: 'clientError', listener: (err: Error, socket: stream.Duplex) => void): this;
+        once(
+            event: 'connect',
+            listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void,
+        ): this;
+        once(event: 'request', listener: RequestListener<Request, Response>): this;
+        once(
+            event: 'upgrade',
+            listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void,
+        ): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'connection', listener: (socket: Socket) => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'listening', listener: () => void): this;
+        prependListener(event: 'checkContinue', listener: RequestListener<Request, Response>): this;
+        prependListener(event: 'checkExpectation', listener: RequestListener<Request, Response>): this;
+        prependListener(event: 'clientError', listener: (err: Error, socket: stream.Duplex) => void): this;
+        prependListener(
+            event: 'connect',
+            listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void,
+        ): this;
+        prependListener(event: 'request', listener: RequestListener<Request, Response>): this;
+        prependListener(
+            event: 'upgrade',
+            listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void,
+        ): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'connection', listener: (socket: Socket) => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'listening', listener: () => void): this;
+        prependOnceListener(event: 'checkContinue', listener: RequestListener<Request, Response>): this;
+        prependOnceListener(event: 'checkExpectation', listener: RequestListener<Request, Response>): this;
+        prependOnceListener(event: 'clientError', listener: (err: Error, socket: stream.Duplex) => void): this;
+        prependOnceListener(
+            event: 'connect',
+            listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void,
+        ): this;
+        prependOnceListener(event: 'request', listener: RequestListener<Request, Response>): this;
+        prependOnceListener(
+            event: 'upgrade',
+            listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void,
+        ): this;
+    }
+    /**
+     * This class serves as the parent class of {@link ClientRequest} and {@link ServerResponse}. It is an abstract of outgoing message from
+     * the perspective of the participants of HTTP transaction.
+     * @since v0.1.17
+     */
+    class OutgoingMessage<Request extends IncomingMessage = IncomingMessage> extends stream.Writable {
+        readonly req: Request;
+        chunkedEncoding: boolean;
+        shouldKeepAlive: boolean;
+        useChunkedEncodingByDefault: boolean;
+        sendDate: boolean;
+        /**
+         * @deprecated Use `writableEnded` instead.
+         */
+        finished: boolean;
+        /**
+         * Read-only. `true` if the headers were sent, otherwise `false`.
+         * @since v0.9.3
+         */
+        readonly headersSent: boolean;
+        /**
+         * Aliases of `outgoingMessage.socket`
+         * @since v0.3.0
+         * @deprecated Since v15.12.0,v14.17.1 - Use `socket` instead.
+         */
+        readonly connection: Socket | null;
+        /**
+         * Reference to the underlying socket. Usually, users will not want to access
+         * this property.
+         *
+         * After calling `outgoingMessage.end()`, this property will be nulled.
+         * @since v0.3.0
+         */
+        readonly socket: Socket | null;
+        constructor();
+        /**
+         * Once a socket is associated with the message and is connected,`socket.setTimeout()` will be called with `msecs` as the first parameter.
+         * @since v0.9.12
+         * @param callback Optional function to be called when a timeout occurs. Same as binding to the `timeout` event.
+         */
+        setTimeout(msecs: number, callback?: () => void): this;
+        /**
+         * Sets a single header value for the header object.
+         * @since v0.4.0
+         * @param name Header name
+         * @param value Header value
+         */
+        setHeader(name: string, value: number | string | ReadonlyArray<string>): this;
+        /**
+         * Gets the value of HTTP header with the given name. If such a name doesn't
+         * exist in message, it will be `undefined`.
+         * @since v0.4.0
+         * @param name Name of header
+         */
+        getHeader(name: string): number | string | string[] | undefined;
+        /**
+         * Returns a shallow copy of the current outgoing headers. Since a shallow
+         * copy is used, array values may be mutated without additional calls to
+         * various header-related HTTP module methods. The keys of the returned
+         * object are the header names and the values are the respective header
+         * values. All header names are lowercase.
+         *
+         * The object returned by the `outgoingMessage.getHeaders()` method does
+         * not prototypically inherit from the JavaScript Object. This means that
+         * typical Object methods such as `obj.toString()`, `obj.hasOwnProperty()`,
+         * and others are not defined and will not work.
+         *
+         * ```js
+         * outgoingMessage.setHeader('Foo', 'bar');
+         * outgoingMessage.setHeader('Set-Cookie', ['foo=bar', 'bar=baz']);
+         *
+         * const headers = outgoingMessage.getHeaders();
+         * // headers === { foo: 'bar', 'set-cookie': ['foo=bar', 'bar=baz'] }
+         * ```
+         * @since v7.7.0
+         */
+        getHeaders(): OutgoingHttpHeaders;
+        /**
+         * Returns an array of names of headers of the outgoing outgoingMessage. All
+         * names are lowercase.
+         * @since v7.7.0
+         */
+        getHeaderNames(): string[];
+        /**
+         * Returns `true` if the header identified by `name` is currently set in the
+         * outgoing headers. The header name is case-insensitive.
+         *
+         * ```js
+         * const hasContentType = outgoingMessage.hasHeader('content-type');
+         * ```
+         * @since v7.7.0
+         */
+        hasHeader(name: string): boolean;
+        /**
+         * Removes a header that is queued for implicit sending.
+         *
+         * ```js
+         * outgoingMessage.removeHeader('Content-Encoding');
+         * ```
+         * @since v0.4.0
+         * @param name Header name
+         */
+        removeHeader(name: string): void;
+        /**
+         * Adds HTTP trailers (headers but at the end of the message) to the message.
+         *
+         * Trailers are **only** be emitted if the message is chunked encoded. If not,
+         * the trailer will be silently discarded.
+         *
+         * HTTP requires the `Trailer` header to be sent to emit trailers,
+         * with a list of header fields in its value, e.g.
+         *
+         * ```js
+         * message.writeHead(200, { 'Content-Type': 'text/plain',
+         *                          'Trailer': 'Content-MD5' });
+         * message.write(fileData);
+         * message.addTrailers({ 'Content-MD5': '7895bf4b8828b55ceaf47747b4bca667' });
+         * message.end();
+         * ```
+         *
+         * Attempting to set a header field name or value that contains invalid characters
+         * will result in a `TypeError` being thrown.
+         * @since v0.3.0
+         */
+        addTrailers(headers: OutgoingHttpHeaders | ReadonlyArray<[string, string]>): void;
+        /**
+         * Compulsorily flushes the message headers
+         *
+         * For efficiency reason, Node.js normally buffers the message headers
+         * until `outgoingMessage.end()` is called or the first chunk of message data
+         * is written. It then tries to pack the headers and data into a single TCP
+         * packet.
+         *
+         * It is usually desired (it saves a TCP round-trip), but not when the first
+         * data is not sent until possibly much later. `outgoingMessage.flushHeaders()`bypasses the optimization and kickstarts the request.
+         * @since v1.6.0
+         */
+        flushHeaders(): void;
+    }
+    /**
+     * This object is created internally by an HTTP server, not by the user. It is
+     * passed as the second parameter to the `'request'` event.
+     * @since v0.1.17
+     */
+    class ServerResponse<Request extends IncomingMessage = IncomingMessage> extends OutgoingMessage<Request> {
+        /**
+         * When using implicit headers (not calling `response.writeHead()` explicitly),
+         * this property controls the status code that will be sent to the client when
+         * the headers get flushed.
+         *
+         * ```js
+         * response.statusCode = 404;
+         * ```
+         *
+         * After response header was sent to the client, this property indicates the
+         * status code which was sent out.
+         * @since v0.4.0
+         */
+        statusCode: number;
+        /**
+         * When using implicit headers (not calling `response.writeHead()` explicitly),
+         * this property controls the status message that will be sent to the client when
+         * the headers get flushed. If this is left as `undefined` then the standard
+         * message for the status code will be used.
+         *
+         * ```js
+         * response.statusMessage = 'Not found';
+         * ```
+         *
+         * After response header was sent to the client, this property indicates the
+         * status message which was sent out.
+         * @since v0.11.8
+         */
+        statusMessage: string;
+        constructor(req: Request);
+        assignSocket(socket: Socket): void;
+        detachSocket(socket: Socket): void;
+        /**
+         * Sends a HTTP/1.1 100 Continue message to the client, indicating that
+         * the request body should be sent. See the `'checkContinue'` event on`Server`.
+         * @since v0.3.0
+         */
+        writeContinue(callback?: () => void): void;
+        /**
+         * Sends a response header to the request. The status code is a 3-digit HTTP
+         * status code, like `404`. The last argument, `headers`, are the response headers.
+         * Optionally one can give a human-readable `statusMessage` as the second
+         * argument.
+         *
+         * `headers` may be an `Array` where the keys and values are in the same list.
+         * It is _not_ a list of tuples. So, the even-numbered offsets are key values,
+         * and the odd-numbered offsets are the associated values. The array is in the same
+         * format as `request.rawHeaders`.
+         *
+         * Returns a reference to the `ServerResponse`, so that calls can be chained.
+         *
+         * ```js
+         * const body = 'hello world';
+         * response
+         *   .writeHead(200, {
+         *     'Content-Length': Buffer.byteLength(body),
+         *     'Content-Type': 'text/plain'
+         *   })
+         *   .end(body);
+         * ```
+         *
+         * This method must only be called once on a message and it must
+         * be called before `response.end()` is called.
+         *
+         * If `response.write()` or `response.end()` are called before calling
+         * this, the implicit/mutable headers will be calculated and call this function.
+         *
+         * When headers have been set with `response.setHeader()`, they will be merged
+         * with any headers passed to `response.writeHead()`, with the headers passed
+         * to `response.writeHead()` given precedence.
+         *
+         * If this method is called and `response.setHeader()` has not been called,
+         * it will directly write the supplied header values onto the network channel
+         * without caching internally, and the `response.getHeader()` on the header
+         * will not yield the expected result. If progressive population of headers is
+         * desired with potential future retrieval and modification, use `response.setHeader()` instead.
+         *
+         * ```js
+         * // Returns content-type = text/plain
+         * const server = http.createServer((req, res) => {
+         *   res.setHeader('Content-Type', 'text/html');
+         *   res.setHeader('X-Foo', 'bar');
+         *   res.writeHead(200, { 'Content-Type': 'text/plain' });
+         *   res.end('ok');
+         * });
+         * ```
+         *
+         * `Content-Length` is given in bytes, not characters. Use `Buffer.byteLength()` to determine the length of the body in bytes. Node.js
+         * does not check whether `Content-Length` and the length of the body which has
+         * been transmitted are equal or not.
+         *
+         * Attempting to set a header field name or value that contains invalid characters
+         * will result in a `TypeError` being thrown.
+         * @since v0.1.30
+         */
+        writeHead(
+            statusCode: number,
+            statusMessage?: string,
+            headers?: OutgoingHttpHeaders | OutgoingHttpHeader[],
+        ): this;
+        writeHead(statusCode: number, headers?: OutgoingHttpHeaders | OutgoingHttpHeader[]): this;
+        /**
+         * Sends a HTTP/1.1 102 Processing message to the client, indicating that
+         * the request body should be sent.
+         * @since v10.0.0
+         */
+        writeProcessing(): void;
+    }
+    interface InformationEvent {
+        statusCode: number;
+        statusMessage: string;
+        httpVersion: string;
+        httpVersionMajor: number;
+        httpVersionMinor: number;
+        headers: IncomingHttpHeaders;
+        rawHeaders: string[];
+    }
+    /**
+     * This object is created internally and returned from {@link request}. It
+     * represents an _in-progress_ request whose header has already been queued. The
+     * header is still mutable using the `setHeader(name, value)`,`getHeader(name)`, `removeHeader(name)` API. The actual header will
+     * be sent along with the first data chunk or when calling `request.end()`.
+     *
+     * To get the response, add a listener for `'response'` to the request object.`'response'` will be emitted from the request object when the response
+     * headers have been received. The `'response'` event is executed with one
+     * argument which is an instance of {@link IncomingMessage}.
+     *
+     * During the `'response'` event, one can add listeners to the
+     * response object; particularly to listen for the `'data'` event.
+     *
+     * If no `'response'` handler is added, then the response will be
+     * entirely discarded. However, if a `'response'` event handler is added,
+     * then the data from the response object **must** be consumed, either by
+     * calling `response.read()` whenever there is a `'readable'` event, or
+     * by adding a `'data'` handler, or by calling the `.resume()` method.
+     * Until the data is consumed, the `'end'` event will not fire. Also, until
+     * the data is read it will consume memory that can eventually lead to a
+     * 'process out of memory' error.
+     *
+     * For backward compatibility, `res` will only emit `'error'` if there is an`'error'` listener registered.
+     *
+     * Node.js does not check whether Content-Length and the length of the
+     * body which has been transmitted are equal or not.
+     * @since v0.1.17
+     */
+    class ClientRequest extends OutgoingMessage {
+        /**
+         * The `request.aborted` property will be `true` if the request has
+         * been aborted.
+         * @since v0.11.14
+         * @deprecated Since v17.0.0,v16.12.0 - Check `destroyed` instead.
+         */
+        aborted: boolean;
+        /**
+         * The request host.
+         * @since v14.5.0, v12.19.0
+         */
+        host: string;
+        /**
+         * The request protocol.
+         * @since v14.5.0, v12.19.0
+         */
+        protocol: string;
+        /**
+         * When sending request through a keep-alive enabled agent, the underlying socket
+         * might be reused. But if server closes connection at unfortunate time, client
+         * may run into a 'ECONNRESET' error.
+         *
+         * ```js
+         * const http = require('http');
+         *
+         * // Server has a 5 seconds keep-alive timeout by default
+         * http
+         *   .createServer((req, res) => {
+         *     res.write('hello\n');
+         *     res.end();
+         *   })
+         *   .listen(3000);
+         *
+         * setInterval(() => {
+         *   // Adapting a keep-alive agent
+         *   http.get('http://localhost:3000', { agent }, (res) => {
+         *     res.on('data', (data) => {
+         *       // Do nothing
+         *     });
+         *   });
+         * }, 5000); // Sending request on 5s interval so it's easy to hit idle timeout
+         * ```
+         *
+         * By marking a request whether it reused socket or not, we can do
+         * automatic error retry base on it.
+         *
+         * ```js
+         * const http = require('http');
+         * const agent = new http.Agent({ keepAlive: true });
+         *
+         * function retriableRequest() {
+         *   const req = http
+         *     .get('http://localhost:3000', { agent }, (res) => {
+         *       // ...
+         *     })
+         *     .on('error', (err) => {
+         *       // Check if retry is needed
+         *       if (req.reusedSocket &#x26;&#x26; err.code === 'ECONNRESET') {
+         *         retriableRequest();
+         *       }
+         *     });
+         * }
+         *
+         * retriableRequest();
+         * ```
+         * @since v13.0.0, v12.16.0
+         */
+        reusedSocket: boolean;
+        /**
+         * Limits maximum response headers count. If set to 0, no limit will be applied.
+         */
+        maxHeadersCount: number;
+        constructor(url: string | URL | ClientRequestArgs, cb?: (res: IncomingMessage) => void);
+        /**
+         * The request method.
+         * @since v0.1.97
+         */
+        method: string;
+        /**
+         * The request path.
+         * @since v0.4.0
+         */
+        path: string;
+        /**
+         * Marks the request as aborting. Calling this will cause remaining data
+         * in the response to be dropped and the socket to be destroyed.
+         * @since v0.3.8
+         * @deprecated Since v14.1.0,v13.14.0 - Use `destroy` instead.
+         */
+        abort(): void;
+        onSocket(socket: Socket): void;
+        /**
+         * Once a socket is assigned to this request and is connected `socket.setTimeout()` will be called.
+         * @since v0.5.9
+         * @param timeout Milliseconds before a request times out.
+         * @param callback Optional function to be called when a timeout occurs. Same as binding to the `'timeout'` event.
+         */
+        setTimeout(timeout: number, callback?: () => void): this;
+        /**
+         * Once a socket is assigned to this request and is connected `socket.setNoDelay()` will be called.
+         * @since v0.5.9
+         */
+        setNoDelay(noDelay?: boolean): void;
+        /**
+         * Once a socket is assigned to this request and is connected `socket.setKeepAlive()` will be called.
+         * @since v0.5.9
+         */
+        setSocketKeepAlive(enable?: boolean, initialDelay?: number): void;
+        /**
+         * Returns an array containing the unique names of the current outgoing raw
+         * headers. Header names are returned with their exact casing being set.
+         *
+         * ```js
+         * request.setHeader('Foo', 'bar');
+         * request.setHeader('Set-Cookie', ['foo=bar', 'bar=baz']);
+         *
+         * const headerNames = request.getRawHeaderNames();
+         * // headerNames === ['Foo', 'Set-Cookie']
+         * ```
+         * @since v15.13.0, v14.17.0
+         */
+        getRawHeaderNames(): string[];
+        /**
+         * @deprecated
+         */
+        addListener(event: 'abort', listener: () => void): this;
+        addListener(
+            event: 'connect',
+            listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void,
+        ): this;
+        addListener(event: 'continue', listener: () => void): this;
+        addListener(event: 'information', listener: (info: InformationEvent) => void): this;
+        addListener(event: 'response', listener: (response: IncomingMessage) => void): this;
+        addListener(event: 'socket', listener: (socket: Socket) => void): this;
+        addListener(event: 'timeout', listener: () => void): this;
+        addListener(
+            event: 'upgrade',
+            listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void,
+        ): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'drain', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'finish', listener: () => void): this;
+        addListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        addListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        /**
+         * @deprecated
+         */
+        on(event: 'abort', listener: () => void): this;
+        on(event: 'connect', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
+        on(event: 'continue', listener: () => void): this;
+        on(event: 'information', listener: (info: InformationEvent) => void): this;
+        on(event: 'response', listener: (response: IncomingMessage) => void): this;
+        on(event: 'socket', listener: (socket: Socket) => void): this;
+        on(event: 'timeout', listener: () => void): this;
+        on(event: 'upgrade', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'drain', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'finish', listener: () => void): this;
+        on(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        on(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        /**
+         * @deprecated
+         */
+        once(event: 'abort', listener: () => void): this;
+        once(event: 'connect', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
+        once(event: 'continue', listener: () => void): this;
+        once(event: 'information', listener: (info: InformationEvent) => void): this;
+        once(event: 'response', listener: (response: IncomingMessage) => void): this;
+        once(event: 'socket', listener: (socket: Socket) => void): this;
+        once(event: 'timeout', listener: () => void): this;
+        once(event: 'upgrade', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'drain', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'finish', listener: () => void): this;
+        once(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        once(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        /**
+         * @deprecated
+         */
+        prependListener(event: 'abort', listener: () => void): this;
+        prependListener(
+            event: 'connect',
+            listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void,
+        ): this;
+        prependListener(event: 'continue', listener: () => void): this;
+        prependListener(event: 'information', listener: (info: InformationEvent) => void): this;
+        prependListener(event: 'response', listener: (response: IncomingMessage) => void): this;
+        prependListener(event: 'socket', listener: (socket: Socket) => void): this;
+        prependListener(event: 'timeout', listener: () => void): this;
+        prependListener(
+            event: 'upgrade',
+            listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void,
+        ): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'drain', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'finish', listener: () => void): this;
+        prependListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        prependListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        /**
+         * @deprecated
+         */
+        prependOnceListener(event: 'abort', listener: () => void): this;
+        prependOnceListener(
+            event: 'connect',
+            listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void,
+        ): this;
+        prependOnceListener(event: 'continue', listener: () => void): this;
+        prependOnceListener(event: 'information', listener: (info: InformationEvent) => void): this;
+        prependOnceListener(event: 'response', listener: (response: IncomingMessage) => void): this;
+        prependOnceListener(event: 'socket', listener: (socket: Socket) => void): this;
+        prependOnceListener(event: 'timeout', listener: () => void): this;
+        prependOnceListener(
+            event: 'upgrade',
+            listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void,
+        ): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'drain', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'finish', listener: () => void): this;
+        prependOnceListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        prependOnceListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    /**
+     * An `IncomingMessage` object is created by {@link Server} or {@link ClientRequest} and passed as the first argument to the `'request'` and `'response'` event respectively. It may be used to
+     * access response
+     * status, headers and data.
+     *
+     * Different from its `socket` value which is a subclass of `stream.Duplex`, the`IncomingMessage` itself extends `stream.Readable` and is created separately to
+     * parse and emit the incoming HTTP headers and payload, as the underlying socket
+     * may be reused multiple times in case of keep-alive.
+     * @since v0.1.17
+     */
+    class IncomingMessage extends stream.Readable {
+        constructor(socket: Socket);
+        /**
+         * The `message.aborted` property will be `true` if the request has
+         * been aborted.
+         * @since v10.1.0
+         * @deprecated Since v17.0.0,v16.12.0 - Check `message.destroyed` from <a href="stream.html#class-streamreadable" class="type">stream.Readable</a>.
+         */
+        aborted: boolean;
+        /**
+         * In case of server request, the HTTP version sent by the client. In the case of
+         * client response, the HTTP version of the connected-to server.
+         * Probably either `'1.1'` or `'1.0'`.
+         *
+         * Also `message.httpVersionMajor` is the first integer and`message.httpVersionMinor` is the second.
+         * @since v0.1.1
+         */
+        httpVersion: string;
+        httpVersionMajor: number;
+        httpVersionMinor: number;
+        /**
+         * The `message.complete` property will be `true` if a complete HTTP message has
+         * been received and successfully parsed.
+         *
+         * This property is particularly useful as a means of determining if a client or
+         * server fully transmitted a message before a connection was terminated:
+         *
+         * ```js
+         * const req = http.request({
+         *   host: '127.0.0.1',
+         *   port: 8080,
+         *   method: 'POST'
+         * }, (res) => {
+         *   res.resume();
+         *   res.on('end', () => {
+         *     if (!res.complete)
+         *       console.error(
+         *         'The connection was terminated while the message was still being sent');
+         *   });
+         * });
+         * ```
+         * @since v0.3.0
+         */
+        complete: boolean;
+        /**
+         * Alias for `message.socket`.
+         * @since v0.1.90
+         * @deprecated Since v16.0.0 - Use `socket`.
+         */
+        connection: Socket;
+        /**
+         * The `net.Socket` object associated with the connection.
+         *
+         * With HTTPS support, use `request.socket.getPeerCertificate()` to obtain the
+         * client's authentication details.
+         *
+         * This property is guaranteed to be an instance of the `net.Socket` class,
+         * a subclass of `stream.Duplex`, unless the user specified a socket
+         * type other than `net.Socket` or internally nulled.
+         * @since v0.3.0
+         */
+        socket: Socket;
+        /**
+         * The request/response headers object.
+         *
+         * Key-value pairs of header names and values. Header names are lower-cased.
+         *
+         * ```js
+         * // Prints something like:
+         * //
+         * // { 'user-agent': 'curl/7.22.0',
+         * //   host: '127.0.0.1:8000',
+         * //   accept: '*' }
+         * console.log(request.getHeaders());
+         * ```
+         *
+         * Duplicates in raw headers are handled in the following ways, depending on the
+         * header name:
+         *
+         * * Duplicates of `age`, `authorization`, `content-length`, `content-type`,`etag`, `expires`, `from`, `host`, `if-modified-since`, `if-unmodified-since`,`last-modified`, `location`,
+         * `max-forwards`, `proxy-authorization`, `referer`,`retry-after`, `server`, or `user-agent` are discarded.
+         * * `set-cookie` is always an array. Duplicates are added to the array.
+         * * For duplicate `cookie` headers, the values are joined together with '; '.
+         * * For all other headers, the values are joined together with ', '.
+         * @since v0.1.5
+         */
+        headers: IncomingHttpHeaders;
+        /**
+         * The raw request/response headers list exactly as they were received.
+         *
+         * The keys and values are in the same list. It is _not_ a
+         * list of tuples. So, the even-numbered offsets are key values, and the
+         * odd-numbered offsets are the associated values.
+         *
+         * Header names are not lowercased, and duplicates are not merged.
+         *
+         * ```js
+         * // Prints something like:
+         * //
+         * // [ 'user-agent',
+         * //   'this is invalid because there can be only one',
+         * //   'User-Agent',
+         * //   'curl/7.22.0',
+         * //   'Host',
+         * //   '127.0.0.1:8000',
+         * //   'ACCEPT',
+         * //   '*' ]
+         * console.log(request.rawHeaders);
+         * ```
+         * @since v0.11.6
+         */
+        rawHeaders: string[];
+        /**
+         * The request/response trailers object. Only populated at the `'end'` event.
+         * @since v0.3.0
+         */
+        trailers: NodeJS.Dict<string>;
+        /**
+         * The raw request/response trailer keys and values exactly as they were
+         * received. Only populated at the `'end'` event.
+         * @since v0.11.6
+         */
+        rawTrailers: string[];
+        /**
+         * Calls `message.socket.setTimeout(msecs, callback)`.
+         * @since v0.5.9
+         */
+        setTimeout(msecs: number, callback?: () => void): this;
+        /**
+         * **Only valid for request obtained from {@link Server}.**
+         *
+         * The request method as a string. Read only. Examples: `'GET'`, `'DELETE'`.
+         * @since v0.1.1
+         */
+        method?: string | undefined;
+        /**
+         * **Only valid for request obtained from {@link Server}.**
+         *
+         * Request URL string. This contains only the URL that is present in the actual
+         * HTTP request. Take the following request:
+         *
+         * ```http
+         * GET /status?name=ryan HTTP/1.1
+         * Accept: text/plain
+         * ```
+         *
+         * To parse the URL into its parts:
+         *
+         * ```js
+         * new URL(request.url, `http://${request.getHeaders().host}`);
+         * ```
+         *
+         * When `request.url` is `'/status?name=ryan'` and`request.getHeaders().host` is `'localhost:3000'`:
+         *
+         * ```console
+         * $ node
+         * > new URL(request.url, `http://${request.getHeaders().host}`)
+         * URL {
+         *   href: 'http://localhost:3000/status?name=ryan',
+         *   origin: 'http://localhost:3000',
+         *   protocol: 'http:',
+         *   username: '',
+         *   password: '',
+         *   host: 'localhost:3000',
+         *   hostname: 'localhost',
+         *   port: '3000',
+         *   pathname: '/status',
+         *   search: '?name=ryan',
+         *   searchParams: URLSearchParams { 'name' => 'ryan' },
+         *   hash: ''
+         * }
+         * ```
+         * @since v0.1.90
+         */
+        url?: string | undefined;
+        /**
+         * **Only valid for response obtained from {@link ClientRequest}.**
+         *
+         * The 3-digit HTTP response status code. E.G. `404`.
+         * @since v0.1.1
+         */
+        statusCode?: number | undefined;
+        /**
+         * **Only valid for response obtained from {@link ClientRequest}.**
+         *
+         * The HTTP response status message (reason phrase). E.G. `OK` or `Internal Server Error`.
+         * @since v0.11.10
+         */
+        statusMessage?: string | undefined;
+        /**
+         * Calls `destroy()` on the socket that received the `IncomingMessage`. If `error`is provided, an `'error'` event is emitted on the socket and `error` is passed
+         * as an argument to any listeners on the event.
+         * @since v0.3.0
+         */
+        destroy(error?: Error): this;
+    }
+    interface AgentOptions extends Partial<TcpSocketConnectOpts> {
+        /**
+         * Keep sockets around in a pool to be used by other requests in the future. Default = false
+         */
+        keepAlive?: boolean | undefined;
+        /**
+         * When using HTTP KeepAlive, how often to send TCP KeepAlive packets over sockets being kept alive. Default = 1000.
+         * Only relevant if keepAlive is set to true.
+         */
+        keepAliveMsecs?: number | undefined;
+        /**
+         * Maximum number of sockets to allow per host. Default for Node 0.10 is 5, default for Node 0.12 is Infinity
+         */
+        maxSockets?: number | undefined;
+        /**
+         * Maximum number of sockets allowed for all hosts in total. Each request will use a new socket until the maximum is reached. Default: Infinity.
+         */
+        maxTotalSockets?: number | undefined;
+        /**
+         * Maximum number of sockets to leave open in a free state. Only relevant if keepAlive is set to true. Default = 256.
+         */
+        maxFreeSockets?: number | undefined;
+        /**
+         * Socket timeout in milliseconds. This will set the timeout after the socket is connected.
+         */
+        timeout?: number | undefined;
+        /**
+         * Scheduling strategy to apply when picking the next free socket to use.
+         * @default `lifo`
+         */
+        scheduling?: 'fifo' | 'lifo' | undefined;
+    }
+    /**
+     * An `Agent` is responsible for managing connection persistence
+     * and reuse for HTTP clients. It maintains a queue of pending requests
+     * for a given host and port, reusing a single socket connection for each
+     * until the queue is empty, at which time the socket is either destroyed
+     * or put into a pool where it is kept to be used again for requests to the
+     * same host and port. Whether it is destroyed or pooled depends on the`keepAlive` `option`.
+     *
+     * Pooled connections have TCP Keep-Alive enabled for them, but servers may
+     * still close idle connections, in which case they will be removed from the
+     * pool and a new connection will be made when a new HTTP request is made for
+     * that host and port. Servers may also refuse to allow multiple requests
+     * over the same connection, in which case the connection will have to be
+     * remade for every request and cannot be pooled. The `Agent` will still make
+     * the requests to that server, but each one will occur over a new connection.
+     *
+     * When a connection is closed by the client or the server, it is removed
+     * from the pool. Any unused sockets in the pool will be unrefed so as not
+     * to keep the Node.js process running when there are no outstanding requests.
+     * (see `socket.unref()`).
+     *
+     * It is good practice, to `destroy()` an `Agent` instance when it is no
+     * longer in use, because unused sockets consume OS resources.
+     *
+     * Sockets are removed from an agent when the socket emits either
+     * a `'close'` event or an `'agentRemove'` event. When intending to keep one
+     * HTTP request open for a long time without keeping it in the agent, something
+     * like the following may be done:
+     *
+     * ```js
+     * http.get(options, (res) => {
+     *   // Do stuff
+     * }).on('socket', (socket) => {
+     *   socket.emit('agentRemove');
+     * });
+     * ```
+     *
+     * An agent may also be used for an individual request. By providing`{agent: false}` as an option to the `http.get()` or `http.request()`functions, a one-time use `Agent` with default options
+     * will be used
+     * for the client connection.
+     *
+     * `agent:false`:
+     *
+     * ```js
+     * http.get({
+     *   hostname: 'localhost',
+     *   port: 80,
+     *   path: '/',
+     *   agent: false  // Create a new agent just for this one request
+     * }, (res) => {
+     *   // Do stuff with response
+     * });
+     * ```
+     * @since v0.3.4
+     */
+    class Agent {
+        /**
+         * By default set to 256\. For agents with `keepAlive` enabled, this
+         * sets the maximum number of sockets that will be left open in the free
+         * state.
+         * @since v0.11.7
+         */
+        maxFreeSockets: number;
+        /**
+         * By default set to `Infinity`. Determines how many concurrent sockets the agent
+         * can have open per origin. Origin is the returned value of `agent.getName()`.
+         * @since v0.3.6
+         */
+        maxSockets: number;
+        /**
+         * By default set to `Infinity`. Determines how many concurrent sockets the agent
+         * can have open. Unlike `maxSockets`, this parameter applies across all origins.
+         * @since v14.5.0, v12.19.0
+         */
+        maxTotalSockets: number;
+        /**
+         * An object which contains arrays of sockets currently awaiting use by
+         * the agent when `keepAlive` is enabled. Do not modify.
+         *
+         * Sockets in the `freeSockets` list will be automatically destroyed and
+         * removed from the array on `'timeout'`.
+         * @since v0.11.4
+         */
+        readonly freeSockets: NodeJS.ReadOnlyDict<Socket[]>;
+        /**
+         * An object which contains arrays of sockets currently in use by the
+         * agent. Do not modify.
+         * @since v0.3.6
+         */
+        readonly sockets: NodeJS.ReadOnlyDict<Socket[]>;
+        /**
+         * An object which contains queues of requests that have not yet been assigned to
+         * sockets. Do not modify.
+         * @since v0.5.9
+         */
+        readonly requests: NodeJS.ReadOnlyDict<IncomingMessage[]>;
+        constructor(opts?: AgentOptions);
+        /**
+         * Destroy any sockets that are currently in use by the agent.
+         *
+         * It is usually not necessary to do this. However, if using an
+         * agent with `keepAlive` enabled, then it is best to explicitly shut down
+         * the agent when it is no longer needed. Otherwise,
+         * sockets might stay open for quite a long time before the server
+         * terminates them.
+         * @since v0.11.4
+         */
+        destroy(): void;
+    }
+    const METHODS: string[];
+    const STATUS_CODES: {
+        [errorCode: number]: string | undefined;
+        [errorCode: string]: string | undefined;
+    };
+    /**
+     * Returns a new instance of {@link Server}.
+     *
+     * The `requestListener` is a function which is automatically
+     * added to the `'request'` event.
+     * @since v0.1.13
+     */
+    function createServer<
+        Request extends typeof IncomingMessage = typeof IncomingMessage,
+        Response extends typeof ServerResponse = typeof ServerResponse,
+    >(requestListener?: RequestListener<Request, Response>): Server<Request, Response>;
+    function createServer<
+        Request extends typeof IncomingMessage = typeof IncomingMessage,
+        Response extends typeof ServerResponse = typeof ServerResponse,
+    >(
+        options: ServerOptions<Request, Response>,
+        requestListener?: RequestListener<Request, Response>,
+    ): Server<Request, Response>;
+    // although RequestOptions are passed as ClientRequestArgs to ClientRequest directly,
+    // create interface RequestOptions would make the naming more clear to developers
+    interface RequestOptions extends ClientRequestArgs {}
+    /**
+     * `options` in `socket.connect()` are also supported.
+     *
+     * Node.js maintains several connections per server to make HTTP requests.
+     * This function allows one to transparently issue requests.
+     *
+     * `url` can be a string or a `URL` object. If `url` is a
+     * string, it is automatically parsed with `new URL()`. If it is a `URL` object, it will be automatically converted to an ordinary `options` object.
+     *
+     * If both `url` and `options` are specified, the objects are merged, with the`options` properties taking precedence.
+     *
+     * The optional `callback` parameter will be added as a one-time listener for
+     * the `'response'` event.
+     *
+     * `http.request()` returns an instance of the {@link ClientRequest} class. The `ClientRequest` instance is a writable stream. If one needs to
+     * upload a file with a POST request, then write to the `ClientRequest` object.
+     *
+     * ```js
+     * const http = require('http');
+     *
+     * const postData = JSON.stringify({
+     *   'msg': 'Hello World!'
+     * });
+     *
+     * const options = {
+     *   hostname: 'www.google.com',
+     *   port: 80,
+     *   path: '/upload',
+     *   method: 'POST',
+     *   headers: {
+     *     'Content-Type': 'application/json',
+     *     'Content-Length': Buffer.byteLength(postData)
+     *   }
+     * };
+     *
+     * const req = http.request(options, (res) => {
+     *   console.log(`STATUS: ${res.statusCode}`);
+     *   console.log(`HEADERS: ${JSON.stringify(res.headers)}`);
+     *   res.setEncoding('utf8');
+     *   res.on('data', (chunk) => {
+     *     console.log(`BODY: ${chunk}`);
+     *   });
+     *   res.on('end', () => {
+     *     console.log('No more data in response.');
+     *   });
+     * });
+     *
+     * req.on('error', (e) => {
+     *   console.error(`problem with request: ${e.message}`);
+     * });
+     *
+     * // Write data to request body
+     * req.write(postData);
+     * req.end();
+     * ```
+     *
+     * In the example `req.end()` was called. With `http.request()` one
+     * must always call `req.end()` to signify the end of the request -
+     * even if there is no data being written to the request body.
+     *
+     * If any error is encountered during the request (be that with DNS resolution,
+     * TCP level errors, or actual HTTP parse errors) an `'error'` event is emitted
+     * on the returned request object. As with all `'error'` events, if no listeners
+     * are registered the error will be thrown.
+     *
+     * There are a few special headers that should be noted.
+     *
+     * * Sending a 'Connection: keep-alive' will notify Node.js that the connection to
+     * the server should be persisted until the next request.
+     * * Sending a 'Content-Length' header will disable the default chunked encoding.
+     * * Sending an 'Expect' header will immediately send the request headers.
+     * Usually, when sending 'Expect: 100-continue', both a timeout and a listener
+     * for the `'continue'` event should be set. See RFC 2616 Section 8.2.3 for more
+     * information.
+     * * Sending an Authorization header will override using the `auth` option
+     * to compute basic authentication.
+     *
+     * Example using a `URL` as `options`:
+     *
+     * ```js
+     * const options = new URL('http://abc:xyz@example.com');
+     *
+     * const req = http.request(options, (res) => {
+     *   // ...
+     * });
+     * ```
+     *
+     * In a successful request, the following events will be emitted in the following
+     * order:
+     *
+     * * `'socket'`
+     * * `'response'`
+     *    * `'data'` any number of times, on the `res` object
+     *    (`'data'` will not be emitted at all if the response body is empty, for
+     *    instance, in most redirects)
+     *    * `'end'` on the `res` object
+     * * `'close'`
+     *
+     * In the case of a connection error, the following events will be emitted:
+     *
+     * * `'socket'`
+     * * `'error'`
+     * * `'close'`
+     *
+     * In the case of a premature connection close before the response is received,
+     * the following events will be emitted in the following order:
+     *
+     * * `'socket'`
+     * * `'error'` with an error with message `'Error: socket hang up'` and code`'ECONNRESET'`
+     * * `'close'`
+     *
+     * In the case of a premature connection close after the response is received,
+     * the following events will be emitted in the following order:
+     *
+     * * `'socket'`
+     * * `'response'`
+     *    * `'data'` any number of times, on the `res` object
+     * * (connection closed here)
+     * * `'aborted'` on the `res` object
+     * * `'error'` on the `res` object with an error with message`'Error: aborted'` and code `'ECONNRESET'`.
+     * * `'close'`
+     * * `'close'` on the `res` object
+     *
+     * If `req.destroy()` is called before a socket is assigned, the following
+     * events will be emitted in the following order:
+     *
+     * * (`req.destroy()` called here)
+     * * `'error'` with an error with message `'Error: socket hang up'` and code`'ECONNRESET'`
+     * * `'close'`
+     *
+     * If `req.destroy()` is called before the connection succeeds, the following
+     * events will be emitted in the following order:
+     *
+     * * `'socket'`
+     * * (`req.destroy()` called here)
+     * * `'error'` with an error with message `'Error: socket hang up'` and code`'ECONNRESET'`
+     * * `'close'`
+     *
+     * If `req.destroy()` is called after the response is received, the following
+     * events will be emitted in the following order:
+     *
+     * * `'socket'`
+     * * `'response'`
+     *    * `'data'` any number of times, on the `res` object
+     * * (`req.destroy()` called here)
+     * * `'aborted'` on the `res` object
+     * * `'error'` on the `res` object with an error with message`'Error: aborted'` and code `'ECONNRESET'`.
+     * * `'close'`
+     * * `'close'` on the `res` object
+     *
+     * If `req.abort()` is called before a socket is assigned, the following
+     * events will be emitted in the following order:
+     *
+     * * (`req.abort()` called here)
+     * * `'abort'`
+     * * `'close'`
+     *
+     * If `req.abort()` is called before the connection succeeds, the following
+     * events will be emitted in the following order:
+     *
+     * * `'socket'`
+     * * (`req.abort()` called here)
+     * * `'abort'`
+     * * `'error'` with an error with message `'Error: socket hang up'` and code`'ECONNRESET'`
+     * * `'close'`
+     *
+     * If `req.abort()` is called after the response is received, the following
+     * events will be emitted in the following order:
+     *
+     * * `'socket'`
+     * * `'response'`
+     *    * `'data'` any number of times, on the `res` object
+     * * (`req.abort()` called here)
+     * * `'abort'`
+     * * `'aborted'` on the `res` object
+     * * `'error'` on the `res` object with an error with message`'Error: aborted'` and code `'ECONNRESET'`.
+     * * `'close'`
+     * * `'close'` on the `res` object
+     *
+     * Setting the `timeout` option or using the `setTimeout()` function will
+     * not abort the request or do anything besides add a `'timeout'` event.
+     *
+     * Passing an `AbortSignal` and then calling `abort` on the corresponding`AbortController` will behave the same way as calling `.destroy()` on the
+     * request itself.
+     * @since v0.3.6
+     */
+    function request(options: RequestOptions | string | URL, callback?: (res: IncomingMessage) => void): ClientRequest;
+    function request(
+        url: string | URL,
+        options: RequestOptions,
+        callback?: (res: IncomingMessage) => void,
+    ): ClientRequest;
+    /**
+     * Since most requests are GET requests without bodies, Node.js provides this
+     * convenience method. The only difference between this method and {@link request} is that it sets the method to GET and calls `req.end()`automatically. The callback must take care to consume the
+     * response
+     * data for reasons stated in {@link ClientRequest} section.
+     *
+     * The `callback` is invoked with a single argument that is an instance of {@link IncomingMessage}.
+     *
+     * JSON fetching example:
+     *
+     * ```js
+     * http.get('http://localhost:8000/', (res) => {
+     *   const { statusCode } = res;
+     *   const contentType = res.headers['content-type'];
+     *
+     *   let error;
+     *   // Any 2xx status code signals a successful response but
+     *   // here we're only checking for 200.
+     *   if (statusCode !== 200) {
+     *     error = new Error('Request Failed.\n' +
+     *                       `Status Code: ${statusCode}`);
+     *   } else if (!/^application\/json/.test(contentType)) {
+     *     error = new Error('Invalid content-type.\n' +
+     *                       `Expected application/json but received ${contentType}`);
+     *   }
+     *   if (error) {
+     *     console.error(error.message);
+     *     // Consume response data to free up memory
+     *     res.resume();
+     *     return;
+     *   }
+     *
+     *   res.setEncoding('utf8');
+     *   let rawData = '';
+     *   res.on('data', (chunk) => { rawData += chunk; });
+     *   res.on('end', () => {
+     *     try {
+     *       const parsedData = JSON.parse(rawData);
+     *       console.log(parsedData);
+     *     } catch (e) {
+     *       console.error(e.message);
+     *     }
+     *   });
+     * }).on('error', (e) => {
+     *   console.error(`Got error: ${e.message}`);
+     * });
+     *
+     * // Create a local server to receive data from
+     * const server = http.createServer((req, res) => {
+     *   res.writeHead(200, { 'Content-Type': 'application/json' });
+     *   res.end(JSON.stringify({
+     *     data: 'Hello World!'
+     *   }));
+     * });
+     *
+     * server.listen(8000);
+     * ```
+     * @since v0.3.6
+     * @param options Accepts the same `options` as {@link request}, with the `method` always set to `GET`. Properties that are inherited from the prototype are ignored.
+     */
+    function get(options: RequestOptions | string | URL, callback?: (res: IncomingMessage) => void): ClientRequest;
+    function get(url: string | URL, options: RequestOptions, callback?: (res: IncomingMessage) => void): ClientRequest;
+    let globalAgent: Agent;
+    /**
+     * Read-only property specifying the maximum allowed size of HTTP headers in bytes.
+     * Defaults to 16KB. Configurable using the `--max-http-header-size` CLI option.
+     */
+    const maxHeaderSize: number;
+}
+declare module 'node:http' {
+    export * from 'http';
+}
diff --git a/igv_component/node_modules/@types/node/http2.d.ts b/igv_component/node_modules/@types/node/http2.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..0f628b9d775d89cc3fa4b5911bbffc8634c3d250
--- /dev/null
+++ b/igv_component/node_modules/@types/node/http2.d.ts
@@ -0,0 +1,2106 @@
+/**
+ * The `http2` module provides an implementation of the [HTTP/2](https://tools.ietf.org/html/rfc7540) protocol. It
+ * can be accessed using:
+ *
+ * ```js
+ * const http2 = require('http2');
+ * ```
+ * @since v8.4.0
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/http2.js)
+ */
+declare module 'http2' {
+    import EventEmitter = require('node:events');
+    import * as fs from 'node:fs';
+    import * as net from 'node:net';
+    import * as stream from 'node:stream';
+    import * as tls from 'node:tls';
+    import * as url from 'node:url';
+    import { IncomingHttpHeaders as Http1IncomingHttpHeaders, OutgoingHttpHeaders, IncomingMessage, ServerResponse } from 'node:http';
+    export { OutgoingHttpHeaders } from 'node:http';
+    export interface IncomingHttpStatusHeader {
+        ':status'?: number | undefined;
+    }
+    export interface IncomingHttpHeaders extends Http1IncomingHttpHeaders {
+        ':path'?: string | undefined;
+        ':method'?: string | undefined;
+        ':authority'?: string | undefined;
+        ':scheme'?: string | undefined;
+    }
+    // Http2Stream
+    export interface StreamPriorityOptions {
+        exclusive?: boolean | undefined;
+        parent?: number | undefined;
+        weight?: number | undefined;
+        silent?: boolean | undefined;
+    }
+    export interface StreamState {
+        localWindowSize?: number | undefined;
+        state?: number | undefined;
+        localClose?: number | undefined;
+        remoteClose?: number | undefined;
+        sumDependencyWeight?: number | undefined;
+        weight?: number | undefined;
+    }
+    export interface ServerStreamResponseOptions {
+        endStream?: boolean | undefined;
+        waitForTrailers?: boolean | undefined;
+    }
+    export interface StatOptions {
+        offset: number;
+        length: number;
+    }
+    export interface ServerStreamFileResponseOptions {
+        statCheck?(stats: fs.Stats, headers: OutgoingHttpHeaders, statOptions: StatOptions): void | boolean;
+        waitForTrailers?: boolean | undefined;
+        offset?: number | undefined;
+        length?: number | undefined;
+    }
+    export interface ServerStreamFileResponseOptionsWithError extends ServerStreamFileResponseOptions {
+        onError?(err: NodeJS.ErrnoException): void;
+    }
+    export interface Http2Stream extends stream.Duplex {
+        /**
+         * Set to `true` if the `Http2Stream` instance was aborted abnormally. When set,
+         * the `'aborted'` event will have been emitted.
+         * @since v8.4.0
+         */
+        readonly aborted: boolean;
+        /**
+         * This property shows the number of characters currently buffered to be written.
+         * See `net.Socket.bufferSize` for details.
+         * @since v11.2.0, v10.16.0
+         */
+        readonly bufferSize: number;
+        /**
+         * Set to `true` if the `Http2Stream` instance has been closed.
+         * @since v9.4.0
+         */
+        readonly closed: boolean;
+        /**
+         * Set to `true` if the `Http2Stream` instance has been destroyed and is no longer
+         * usable.
+         * @since v8.4.0
+         */
+        readonly destroyed: boolean;
+        /**
+         * Set to `true` if the `END_STREAM` flag was set in the request or response
+         * HEADERS frame received, indicating that no additional data should be received
+         * and the readable side of the `Http2Stream` will be closed.
+         * @since v10.11.0
+         */
+        readonly endAfterHeaders: boolean;
+        /**
+         * The numeric stream identifier of this `Http2Stream` instance. Set to `undefined`if the stream identifier has not yet been assigned.
+         * @since v8.4.0
+         */
+        readonly id?: number | undefined;
+        /**
+         * Set to `true` if the `Http2Stream` instance has not yet been assigned a
+         * numeric stream identifier.
+         * @since v9.4.0
+         */
+        readonly pending: boolean;
+        /**
+         * Set to the `RST_STREAM` `error code` reported when the `Http2Stream` is
+         * destroyed after either receiving an `RST_STREAM` frame from the connected peer,
+         * calling `http2stream.close()`, or `http2stream.destroy()`. Will be`undefined` if the `Http2Stream` has not been closed.
+         * @since v8.4.0
+         */
+        readonly rstCode: number;
+        /**
+         * An object containing the outbound headers sent for this `Http2Stream`.
+         * @since v9.5.0
+         */
+        readonly sentHeaders: OutgoingHttpHeaders;
+        /**
+         * An array of objects containing the outbound informational (additional) headers
+         * sent for this `Http2Stream`.
+         * @since v9.5.0
+         */
+        readonly sentInfoHeaders?: OutgoingHttpHeaders[] | undefined;
+        /**
+         * An object containing the outbound trailers sent for this `HttpStream`.
+         * @since v9.5.0
+         */
+        readonly sentTrailers?: OutgoingHttpHeaders | undefined;
+        /**
+         * A reference to the `Http2Session` instance that owns this `Http2Stream`. The
+         * value will be `undefined` after the `Http2Stream` instance is destroyed.
+         * @since v8.4.0
+         */
+        readonly session: Http2Session;
+        /**
+         * Provides miscellaneous information about the current state of the`Http2Stream`.
+         *
+         * A current state of this `Http2Stream`.
+         * @since v8.4.0
+         */
+        readonly state: StreamState;
+        /**
+         * Closes the `Http2Stream` instance by sending an `RST_STREAM` frame to the
+         * connected HTTP/2 peer.
+         * @since v8.4.0
+         * @param [code=http2.constants.NGHTTP2_NO_ERROR] Unsigned 32-bit integer identifying the error code.
+         * @param callback An optional function registered to listen for the `'close'` event.
+         */
+        close(code?: number, callback?: () => void): void;
+        /**
+         * Updates the priority for this `Http2Stream` instance.
+         * @since v8.4.0
+         */
+        priority(options: StreamPriorityOptions): void;
+        /**
+         * ```js
+         * const http2 = require('http2');
+         * const client = http2.connect('http://example.org:8000');
+         * const { NGHTTP2_CANCEL } = http2.constants;
+         * const req = client.request({ ':path': '/' });
+         *
+         * // Cancel the stream if there's no activity after 5 seconds
+         * req.setTimeout(5000, () => req.close(NGHTTP2_CANCEL));
+         * ```
+         * @since v8.4.0
+         */
+        setTimeout(msecs: number, callback?: () => void): void;
+        /**
+         * Sends a trailing `HEADERS` frame to the connected HTTP/2 peer. This method
+         * will cause the `Http2Stream` to be immediately closed and must only be
+         * called after the `'wantTrailers'` event has been emitted. When sending a
+         * request or sending a response, the `options.waitForTrailers` option must be set
+         * in order to keep the `Http2Stream` open after the final `DATA` frame so that
+         * trailers can be sent.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   stream.respond(undefined, { waitForTrailers: true });
+         *   stream.on('wantTrailers', () => {
+         *     stream.sendTrailers({ xyz: 'abc' });
+         *   });
+         *   stream.end('Hello World');
+         * });
+         * ```
+         *
+         * The HTTP/1 specification forbids trailers from containing HTTP/2 pseudo-header
+         * fields (e.g. `':method'`, `':path'`, etc).
+         * @since v10.0.0
+         */
+        sendTrailers(headers: OutgoingHttpHeaders): void;
+        addListener(event: 'aborted', listener: () => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        addListener(event: 'drain', listener: () => void): this;
+        addListener(event: 'end', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'finish', listener: () => void): this;
+        addListener(event: 'frameError', listener: (frameType: number, errorCode: number) => void): this;
+        addListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        addListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        addListener(event: 'streamClosed', listener: (code: number) => void): this;
+        addListener(event: 'timeout', listener: () => void): this;
+        addListener(event: 'trailers', listener: (trailers: IncomingHttpHeaders, flags: number) => void): this;
+        addListener(event: 'wantTrailers', listener: () => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'aborted'): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'data', chunk: Buffer | string): boolean;
+        emit(event: 'drain'): boolean;
+        emit(event: 'end'): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'finish'): boolean;
+        emit(event: 'frameError', frameType: number, errorCode: number): boolean;
+        emit(event: 'pipe', src: stream.Readable): boolean;
+        emit(event: 'unpipe', src: stream.Readable): boolean;
+        emit(event: 'streamClosed', code: number): boolean;
+        emit(event: 'timeout'): boolean;
+        emit(event: 'trailers', trailers: IncomingHttpHeaders, flags: number): boolean;
+        emit(event: 'wantTrailers'): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'aborted', listener: () => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        on(event: 'drain', listener: () => void): this;
+        on(event: 'end', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'finish', listener: () => void): this;
+        on(event: 'frameError', listener: (frameType: number, errorCode: number) => void): this;
+        on(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        on(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        on(event: 'streamClosed', listener: (code: number) => void): this;
+        on(event: 'timeout', listener: () => void): this;
+        on(event: 'trailers', listener: (trailers: IncomingHttpHeaders, flags: number) => void): this;
+        on(event: 'wantTrailers', listener: () => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'aborted', listener: () => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        once(event: 'drain', listener: () => void): this;
+        once(event: 'end', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'finish', listener: () => void): this;
+        once(event: 'frameError', listener: (frameType: number, errorCode: number) => void): this;
+        once(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        once(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        once(event: 'streamClosed', listener: (code: number) => void): this;
+        once(event: 'timeout', listener: () => void): this;
+        once(event: 'trailers', listener: (trailers: IncomingHttpHeaders, flags: number) => void): this;
+        once(event: 'wantTrailers', listener: () => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'aborted', listener: () => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        prependListener(event: 'drain', listener: () => void): this;
+        prependListener(event: 'end', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'finish', listener: () => void): this;
+        prependListener(event: 'frameError', listener: (frameType: number, errorCode: number) => void): this;
+        prependListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        prependListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        prependListener(event: 'streamClosed', listener: (code: number) => void): this;
+        prependListener(event: 'timeout', listener: () => void): this;
+        prependListener(event: 'trailers', listener: (trailers: IncomingHttpHeaders, flags: number) => void): this;
+        prependListener(event: 'wantTrailers', listener: () => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'aborted', listener: () => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        prependOnceListener(event: 'drain', listener: () => void): this;
+        prependOnceListener(event: 'end', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'finish', listener: () => void): this;
+        prependOnceListener(event: 'frameError', listener: (frameType: number, errorCode: number) => void): this;
+        prependOnceListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        prependOnceListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        prependOnceListener(event: 'streamClosed', listener: (code: number) => void): this;
+        prependOnceListener(event: 'timeout', listener: () => void): this;
+        prependOnceListener(event: 'trailers', listener: (trailers: IncomingHttpHeaders, flags: number) => void): this;
+        prependOnceListener(event: 'wantTrailers', listener: () => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    export interface ClientHttp2Stream extends Http2Stream {
+        addListener(event: 'continue', listener: () => {}): this;
+        addListener(event: 'headers', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        addListener(event: 'push', listener: (headers: IncomingHttpHeaders, flags: number) => void): this;
+        addListener(event: 'response', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'continue'): boolean;
+        emit(event: 'headers', headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number): boolean;
+        emit(event: 'push', headers: IncomingHttpHeaders, flags: number): boolean;
+        emit(event: 'response', headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'continue', listener: () => {}): this;
+        on(event: 'headers', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        on(event: 'push', listener: (headers: IncomingHttpHeaders, flags: number) => void): this;
+        on(event: 'response', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'continue', listener: () => {}): this;
+        once(event: 'headers', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        once(event: 'push', listener: (headers: IncomingHttpHeaders, flags: number) => void): this;
+        once(event: 'response', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'continue', listener: () => {}): this;
+        prependListener(event: 'headers', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        prependListener(event: 'push', listener: (headers: IncomingHttpHeaders, flags: number) => void): this;
+        prependListener(event: 'response', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'continue', listener: () => {}): this;
+        prependOnceListener(event: 'headers', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        prependOnceListener(event: 'push', listener: (headers: IncomingHttpHeaders, flags: number) => void): this;
+        prependOnceListener(event: 'response', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    export interface ServerHttp2Stream extends Http2Stream {
+        /**
+         * True if headers were sent, false otherwise (read-only).
+         * @since v8.4.0
+         */
+        readonly headersSent: boolean;
+        /**
+         * Read-only property mapped to the `SETTINGS_ENABLE_PUSH` flag of the remote
+         * client's most recent `SETTINGS` frame. Will be `true` if the remote peer
+         * accepts push streams, `false` otherwise. Settings are the same for every`Http2Stream` in the same `Http2Session`.
+         * @since v8.4.0
+         */
+        readonly pushAllowed: boolean;
+        /**
+         * Sends an additional informational `HEADERS` frame to the connected HTTP/2 peer.
+         * @since v8.4.0
+         */
+        additionalHeaders(headers: OutgoingHttpHeaders): void;
+        /**
+         * Initiates a push stream. The callback is invoked with the new `Http2Stream`instance created for the push stream passed as the second argument, or an`Error` passed as the first argument.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   stream.respond({ ':status': 200 });
+         *   stream.pushStream({ ':path': '/' }, (err, pushStream, headers) => {
+         *     if (err) throw err;
+         *     pushStream.respond({ ':status': 200 });
+         *     pushStream.end('some pushed data');
+         *   });
+         *   stream.end('some data');
+         * });
+         * ```
+         *
+         * Setting the weight of a push stream is not allowed in the `HEADERS` frame. Pass
+         * a `weight` value to `http2stream.priority` with the `silent` option set to`true` to enable server-side bandwidth balancing between concurrent streams.
+         *
+         * Calling `http2stream.pushStream()` from within a pushed stream is not permitted
+         * and will throw an error.
+         * @since v8.4.0
+         * @param callback Callback that is called once the push stream has been initiated.
+         */
+        pushStream(headers: OutgoingHttpHeaders, callback?: (err: Error | null, pushStream: ServerHttp2Stream, headers: OutgoingHttpHeaders) => void): void;
+        pushStream(headers: OutgoingHttpHeaders, options?: StreamPriorityOptions, callback?: (err: Error | null, pushStream: ServerHttp2Stream, headers: OutgoingHttpHeaders) => void): void;
+        /**
+         * ```js
+         * const http2 = require('http2');
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   stream.respond({ ':status': 200 });
+         *   stream.end('some data');
+         * });
+         * ```
+         *
+         * When the `options.waitForTrailers` option is set, the `'wantTrailers'` event
+         * will be emitted immediately after queuing the last chunk of payload data to be
+         * sent. The `http2stream.sendTrailers()` method can then be used to sent trailing
+         * header fields to the peer.
+         *
+         * When `options.waitForTrailers` is set, the `Http2Stream` will not automatically
+         * close when the final `DATA` frame is transmitted. User code must call either`http2stream.sendTrailers()` or `http2stream.close()` to close the`Http2Stream`.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   stream.respond({ ':status': 200 }, { waitForTrailers: true });
+         *   stream.on('wantTrailers', () => {
+         *     stream.sendTrailers({ ABC: 'some value to send' });
+         *   });
+         *   stream.end('some data');
+         * });
+         * ```
+         * @since v8.4.0
+         */
+        respond(headers?: OutgoingHttpHeaders, options?: ServerStreamResponseOptions): void;
+        /**
+         * Initiates a response whose data is read from the given file descriptor. No
+         * validation is performed on the given file descriptor. If an error occurs while
+         * attempting to read data using the file descriptor, the `Http2Stream` will be
+         * closed using an `RST_STREAM` frame using the standard `INTERNAL_ERROR` code.
+         *
+         * When used, the `Http2Stream` object's `Duplex` interface will be closed
+         * automatically.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const fs = require('fs');
+         *
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   const fd = fs.openSync('/some/file', 'r');
+         *
+         *   const stat = fs.fstatSync(fd);
+         *   const headers = {
+         *     'content-length': stat.size,
+         *     'last-modified': stat.mtime.toUTCString(),
+         *     'content-type': 'text/plain; charset=utf-8'
+         *   };
+         *   stream.respondWithFD(fd, headers);
+         *   stream.on('close', () => fs.closeSync(fd));
+         * });
+         * ```
+         *
+         * The optional `options.statCheck` function may be specified to give user code
+         * an opportunity to set additional content headers based on the `fs.Stat` details
+         * of the given fd. If the `statCheck` function is provided, the`http2stream.respondWithFD()` method will perform an `fs.fstat()` call to
+         * collect details on the provided file descriptor.
+         *
+         * The `offset` and `length` options may be used to limit the response to a
+         * specific range subset. This can be used, for instance, to support HTTP Range
+         * requests.
+         *
+         * The file descriptor or `FileHandle` is not closed when the stream is closed,
+         * so it will need to be closed manually once it is no longer needed.
+         * Using the same file descriptor concurrently for multiple streams
+         * is not supported and may result in data loss. Re-using a file descriptor
+         * after a stream has finished is supported.
+         *
+         * When the `options.waitForTrailers` option is set, the `'wantTrailers'` event
+         * will be emitted immediately after queuing the last chunk of payload data to be
+         * sent. The `http2stream.sendTrailers()` method can then be used to sent trailing
+         * header fields to the peer.
+         *
+         * When `options.waitForTrailers` is set, the `Http2Stream` will not automatically
+         * close when the final `DATA` frame is transmitted. User code _must_ call either`http2stream.sendTrailers()` or `http2stream.close()` to close the`Http2Stream`.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const fs = require('fs');
+         *
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   const fd = fs.openSync('/some/file', 'r');
+         *
+         *   const stat = fs.fstatSync(fd);
+         *   const headers = {
+         *     'content-length': stat.size,
+         *     'last-modified': stat.mtime.toUTCString(),
+         *     'content-type': 'text/plain; charset=utf-8'
+         *   };
+         *   stream.respondWithFD(fd, headers, { waitForTrailers: true });
+         *   stream.on('wantTrailers', () => {
+         *     stream.sendTrailers({ ABC: 'some value to send' });
+         *   });
+         *
+         *   stream.on('close', () => fs.closeSync(fd));
+         * });
+         * ```
+         * @since v8.4.0
+         * @param fd A readable file descriptor.
+         */
+        respondWithFD(fd: number | fs.promises.FileHandle, headers?: OutgoingHttpHeaders, options?: ServerStreamFileResponseOptions): void;
+        /**
+         * Sends a regular file as the response. The `path` must specify a regular file
+         * or an `'error'` event will be emitted on the `Http2Stream` object.
+         *
+         * When used, the `Http2Stream` object's `Duplex` interface will be closed
+         * automatically.
+         *
+         * The optional `options.statCheck` function may be specified to give user code
+         * an opportunity to set additional content headers based on the `fs.Stat` details
+         * of the given file:
+         *
+         * If an error occurs while attempting to read the file data, the `Http2Stream`will be closed using an `RST_STREAM` frame using the standard `INTERNAL_ERROR`code. If the `onError` callback is
+         * defined, then it will be called. Otherwise
+         * the stream will be destroyed.
+         *
+         * Example using a file path:
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   function statCheck(stat, headers) {
+         *     headers['last-modified'] = stat.mtime.toUTCString();
+         *   }
+         *
+         *   function onError(err) {
+         *     // stream.respond() can throw if the stream has been destroyed by
+         *     // the other side.
+         *     try {
+         *       if (err.code === 'ENOENT') {
+         *         stream.respond({ ':status': 404 });
+         *       } else {
+         *         stream.respond({ ':status': 500 });
+         *       }
+         *     } catch (err) {
+         *       // Perform actual error handling.
+         *       console.log(err);
+         *     }
+         *     stream.end();
+         *   }
+         *
+         *   stream.respondWithFile('/some/file',
+         *                          { 'content-type': 'text/plain; charset=utf-8' },
+         *                          { statCheck, onError });
+         * });
+         * ```
+         *
+         * The `options.statCheck` function may also be used to cancel the send operation
+         * by returning `false`. For instance, a conditional request may check the stat
+         * results to determine if the file has been modified to return an appropriate`304` response:
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   function statCheck(stat, headers) {
+         *     // Check the stat here...
+         *     stream.respond({ ':status': 304 });
+         *     return false; // Cancel the send operation
+         *   }
+         *   stream.respondWithFile('/some/file',
+         *                          { 'content-type': 'text/plain; charset=utf-8' },
+         *                          { statCheck });
+         * });
+         * ```
+         *
+         * The `content-length` header field will be automatically set.
+         *
+         * The `offset` and `length` options may be used to limit the response to a
+         * specific range subset. This can be used, for instance, to support HTTP Range
+         * requests.
+         *
+         * The `options.onError` function may also be used to handle all the errors
+         * that could happen before the delivery of the file is initiated. The
+         * default behavior is to destroy the stream.
+         *
+         * When the `options.waitForTrailers` option is set, the `'wantTrailers'` event
+         * will be emitted immediately after queuing the last chunk of payload data to be
+         * sent. The `http2stream.sendTrailers()` method can then be used to sent trailing
+         * header fields to the peer.
+         *
+         * When `options.waitForTrailers` is set, the `Http2Stream` will not automatically
+         * close when the final `DATA` frame is transmitted. User code must call either`http2stream.sendTrailers()` or `http2stream.close()` to close the`Http2Stream`.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   stream.respondWithFile('/some/file',
+         *                          { 'content-type': 'text/plain; charset=utf-8' },
+         *                          { waitForTrailers: true });
+         *   stream.on('wantTrailers', () => {
+         *     stream.sendTrailers({ ABC: 'some value to send' });
+         *   });
+         * });
+         * ```
+         * @since v8.4.0
+         */
+        respondWithFile(path: string, headers?: OutgoingHttpHeaders, options?: ServerStreamFileResponseOptionsWithError): void;
+    }
+    // Http2Session
+    export interface Settings {
+        headerTableSize?: number | undefined;
+        enablePush?: boolean | undefined;
+        initialWindowSize?: number | undefined;
+        maxFrameSize?: number | undefined;
+        maxConcurrentStreams?: number | undefined;
+        maxHeaderListSize?: number | undefined;
+        enableConnectProtocol?: boolean | undefined;
+    }
+    export interface ClientSessionRequestOptions {
+        endStream?: boolean | undefined;
+        exclusive?: boolean | undefined;
+        parent?: number | undefined;
+        weight?: number | undefined;
+        waitForTrailers?: boolean | undefined;
+        signal?: AbortSignal | undefined;
+    }
+    export interface SessionState {
+        effectiveLocalWindowSize?: number | undefined;
+        effectiveRecvDataLength?: number | undefined;
+        nextStreamID?: number | undefined;
+        localWindowSize?: number | undefined;
+        lastProcStreamID?: number | undefined;
+        remoteWindowSize?: number | undefined;
+        outboundQueueSize?: number | undefined;
+        deflateDynamicTableSize?: number | undefined;
+        inflateDynamicTableSize?: number | undefined;
+    }
+    export interface Http2Session extends EventEmitter {
+        /**
+         * Value will be `undefined` if the `Http2Session` is not yet connected to a
+         * socket, `h2c` if the `Http2Session` is not connected to a `TLSSocket`, or
+         * will return the value of the connected `TLSSocket`'s own `alpnProtocol`property.
+         * @since v9.4.0
+         */
+        readonly alpnProtocol?: string | undefined;
+        /**
+         * Will be `true` if this `Http2Session` instance has been closed, otherwise`false`.
+         * @since v9.4.0
+         */
+        readonly closed: boolean;
+        /**
+         * Will be `true` if this `Http2Session` instance is still connecting, will be set
+         * to `false` before emitting `connect` event and/or calling the `http2.connect`callback.
+         * @since v10.0.0
+         */
+        readonly connecting: boolean;
+        /**
+         * Will be `true` if this `Http2Session` instance has been destroyed and must no
+         * longer be used, otherwise `false`.
+         * @since v8.4.0
+         */
+        readonly destroyed: boolean;
+        /**
+         * Value is `undefined` if the `Http2Session` session socket has not yet been
+         * connected, `true` if the `Http2Session` is connected with a `TLSSocket`,
+         * and `false` if the `Http2Session` is connected to any other kind of socket
+         * or stream.
+         * @since v9.4.0
+         */
+        readonly encrypted?: boolean | undefined;
+        /**
+         * A prototype-less object describing the current local settings of this`Http2Session`. The local settings are local to _this_`Http2Session` instance.
+         * @since v8.4.0
+         */
+        readonly localSettings: Settings;
+        /**
+         * If the `Http2Session` is connected to a `TLSSocket`, the `originSet` property
+         * will return an `Array` of origins for which the `Http2Session` may be
+         * considered authoritative.
+         *
+         * The `originSet` property is only available when using a secure TLS connection.
+         * @since v9.4.0
+         */
+        readonly originSet?: string[] | undefined;
+        /**
+         * Indicates whether the `Http2Session` is currently waiting for acknowledgment of
+         * a sent `SETTINGS` frame. Will be `true` after calling the`http2session.settings()` method. Will be `false` once all sent `SETTINGS`frames have been acknowledged.
+         * @since v8.4.0
+         */
+        readonly pendingSettingsAck: boolean;
+        /**
+         * A prototype-less object describing the current remote settings of this`Http2Session`. The remote settings are set by the _connected_ HTTP/2 peer.
+         * @since v8.4.0
+         */
+        readonly remoteSettings: Settings;
+        /**
+         * Returns a `Proxy` object that acts as a `net.Socket` (or `tls.TLSSocket`) but
+         * limits available methods to ones safe to use with HTTP/2.
+         *
+         * `destroy`, `emit`, `end`, `pause`, `read`, `resume`, and `write` will throw
+         * an error with code `ERR_HTTP2_NO_SOCKET_MANIPULATION`. See `Http2Session and Sockets` for more information.
+         *
+         * `setTimeout` method will be called on this `Http2Session`.
+         *
+         * All other interactions will be routed directly to the socket.
+         * @since v8.4.0
+         */
+        readonly socket: net.Socket | tls.TLSSocket;
+        /**
+         * Provides miscellaneous information about the current state of the`Http2Session`.
+         *
+         * An object describing the current status of this `Http2Session`.
+         * @since v8.4.0
+         */
+        readonly state: SessionState;
+        /**
+         * The `http2session.type` will be equal to`http2.constants.NGHTTP2_SESSION_SERVER` if this `Http2Session` instance is a
+         * server, and `http2.constants.NGHTTP2_SESSION_CLIENT` if the instance is a
+         * client.
+         * @since v8.4.0
+         */
+        readonly type: number;
+        /**
+         * Gracefully closes the `Http2Session`, allowing any existing streams to
+         * complete on their own and preventing new `Http2Stream` instances from being
+         * created. Once closed, `http2session.destroy()`_might_ be called if there
+         * are no open `Http2Stream` instances.
+         *
+         * If specified, the `callback` function is registered as a handler for the`'close'` event.
+         * @since v9.4.0
+         */
+        close(callback?: () => void): void;
+        /**
+         * Immediately terminates the `Http2Session` and the associated `net.Socket` or`tls.TLSSocket`.
+         *
+         * Once destroyed, the `Http2Session` will emit the `'close'` event. If `error`is not undefined, an `'error'` event will be emitted immediately before the`'close'` event.
+         *
+         * If there are any remaining open `Http2Streams` associated with the`Http2Session`, those will also be destroyed.
+         * @since v8.4.0
+         * @param error An `Error` object if the `Http2Session` is being destroyed due to an error.
+         * @param code The HTTP/2 error code to send in the final `GOAWAY` frame. If unspecified, and `error` is not undefined, the default is `INTERNAL_ERROR`, otherwise defaults to `NO_ERROR`.
+         */
+        destroy(error?: Error, code?: number): void;
+        /**
+         * Transmits a `GOAWAY` frame to the connected peer _without_ shutting down the`Http2Session`.
+         * @since v9.4.0
+         * @param code An HTTP/2 error code
+         * @param lastStreamID The numeric ID of the last processed `Http2Stream`
+         * @param opaqueData A `TypedArray` or `DataView` instance containing additional data to be carried within the `GOAWAY` frame.
+         */
+        goaway(code?: number, lastStreamID?: number, opaqueData?: NodeJS.ArrayBufferView): void;
+        /**
+         * Sends a `PING` frame to the connected HTTP/2 peer. A `callback` function must
+         * be provided. The method will return `true` if the `PING` was sent, `false`otherwise.
+         *
+         * The maximum number of outstanding (unacknowledged) pings is determined by the`maxOutstandingPings` configuration option. The default maximum is 10.
+         *
+         * If provided, the `payload` must be a `Buffer`, `TypedArray`, or `DataView`containing 8 bytes of data that will be transmitted with the `PING` and
+         * returned with the ping acknowledgment.
+         *
+         * The callback will be invoked with three arguments: an error argument that will
+         * be `null` if the `PING` was successfully acknowledged, a `duration` argument
+         * that reports the number of milliseconds elapsed since the ping was sent and the
+         * acknowledgment was received, and a `Buffer` containing the 8-byte `PING`payload.
+         *
+         * ```js
+         * session.ping(Buffer.from('abcdefgh'), (err, duration, payload) => {
+         *   if (!err) {
+         *     console.log(`Ping acknowledged in ${duration} milliseconds`);
+         *     console.log(`With payload '${payload.toString()}'`);
+         *   }
+         * });
+         * ```
+         *
+         * If the `payload` argument is not specified, the default payload will be the
+         * 64-bit timestamp (little endian) marking the start of the `PING` duration.
+         * @since v8.9.3
+         * @param payload Optional ping payload.
+         */
+        ping(callback: (err: Error | null, duration: number, payload: Buffer) => void): boolean;
+        ping(payload: NodeJS.ArrayBufferView, callback: (err: Error | null, duration: number, payload: Buffer) => void): boolean;
+        /**
+         * Calls `ref()` on this `Http2Session`instance's underlying `net.Socket`.
+         * @since v9.4.0
+         */
+        ref(): void;
+        /**
+         * Sets the local endpoint's window size.
+         * The `windowSize` is the total window size to set, not
+         * the delta.
+         *
+         * ```js
+         * const http2 = require('http2');
+         *
+         * const server = http2.createServer();
+         * const expectedWindowSize = 2 ** 20;
+         * server.on('connect', (session) => {
+         *
+         *   // Set local window size to be 2 ** 20
+         *   session.setLocalWindowSize(expectedWindowSize);
+         * });
+         * ```
+         * @since v15.3.0, v14.18.0
+         */
+        setLocalWindowSize(windowSize: number): void;
+        /**
+         * Used to set a callback function that is called when there is no activity on
+         * the `Http2Session` after `msecs` milliseconds. The given `callback` is
+         * registered as a listener on the `'timeout'` event.
+         * @since v8.4.0
+         */
+        setTimeout(msecs: number, callback?: () => void): void;
+        /**
+         * Updates the current local settings for this `Http2Session` and sends a new`SETTINGS` frame to the connected HTTP/2 peer.
+         *
+         * Once called, the `http2session.pendingSettingsAck` property will be `true`while the session is waiting for the remote peer to acknowledge the new
+         * settings.
+         *
+         * The new settings will not become effective until the `SETTINGS` acknowledgment
+         * is received and the `'localSettings'` event is emitted. It is possible to send
+         * multiple `SETTINGS` frames while acknowledgment is still pending.
+         * @since v8.4.0
+         * @param callback Callback that is called once the session is connected or right away if the session is already connected.
+         */
+        settings(settings: Settings, callback?: (err: Error | null, settings: Settings, duration: number) => void): void;
+        /**
+         * Calls `unref()` on this `Http2Session`instance's underlying `net.Socket`.
+         * @since v9.4.0
+         */
+        unref(): void;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'frameError', listener: (frameType: number, errorCode: number, streamID: number) => void): this;
+        addListener(event: 'goaway', listener: (errorCode: number, lastStreamID: number, opaqueData: Buffer) => void): this;
+        addListener(event: 'localSettings', listener: (settings: Settings) => void): this;
+        addListener(event: 'ping', listener: () => void): this;
+        addListener(event: 'remoteSettings', listener: (settings: Settings) => void): this;
+        addListener(event: 'timeout', listener: () => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'close'): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'frameError', frameType: number, errorCode: number, streamID: number): boolean;
+        emit(event: 'goaway', errorCode: number, lastStreamID: number, opaqueData: Buffer): boolean;
+        emit(event: 'localSettings', settings: Settings): boolean;
+        emit(event: 'ping'): boolean;
+        emit(event: 'remoteSettings', settings: Settings): boolean;
+        emit(event: 'timeout'): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'frameError', listener: (frameType: number, errorCode: number, streamID: number) => void): this;
+        on(event: 'goaway', listener: (errorCode: number, lastStreamID: number, opaqueData: Buffer) => void): this;
+        on(event: 'localSettings', listener: (settings: Settings) => void): this;
+        on(event: 'ping', listener: () => void): this;
+        on(event: 'remoteSettings', listener: (settings: Settings) => void): this;
+        on(event: 'timeout', listener: () => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'frameError', listener: (frameType: number, errorCode: number, streamID: number) => void): this;
+        once(event: 'goaway', listener: (errorCode: number, lastStreamID: number, opaqueData: Buffer) => void): this;
+        once(event: 'localSettings', listener: (settings: Settings) => void): this;
+        once(event: 'ping', listener: () => void): this;
+        once(event: 'remoteSettings', listener: (settings: Settings) => void): this;
+        once(event: 'timeout', listener: () => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'frameError', listener: (frameType: number, errorCode: number, streamID: number) => void): this;
+        prependListener(event: 'goaway', listener: (errorCode: number, lastStreamID: number, opaqueData: Buffer) => void): this;
+        prependListener(event: 'localSettings', listener: (settings: Settings) => void): this;
+        prependListener(event: 'ping', listener: () => void): this;
+        prependListener(event: 'remoteSettings', listener: (settings: Settings) => void): this;
+        prependListener(event: 'timeout', listener: () => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'frameError', listener: (frameType: number, errorCode: number, streamID: number) => void): this;
+        prependOnceListener(event: 'goaway', listener: (errorCode: number, lastStreamID: number, opaqueData: Buffer) => void): this;
+        prependOnceListener(event: 'localSettings', listener: (settings: Settings) => void): this;
+        prependOnceListener(event: 'ping', listener: () => void): this;
+        prependOnceListener(event: 'remoteSettings', listener: (settings: Settings) => void): this;
+        prependOnceListener(event: 'timeout', listener: () => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    export interface ClientHttp2Session extends Http2Session {
+        /**
+         * For HTTP/2 Client `Http2Session` instances only, the `http2session.request()`creates and returns an `Http2Stream` instance that can be used to send an
+         * HTTP/2 request to the connected server.
+         *
+         * When a `ClientHttp2Session` is first created, the socket may not yet be
+         * connected. if `clienthttp2session.request()` is called during this time, the
+         * actual request will be deferred until the socket is ready to go.
+         * If the `session` is closed before the actual request be executed, an`ERR_HTTP2_GOAWAY_SESSION` is thrown.
+         *
+         * This method is only available if `http2session.type` is equal to`http2.constants.NGHTTP2_SESSION_CLIENT`.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const clientSession = http2.connect('https://localhost:1234');
+         * const {
+         *   HTTP2_HEADER_PATH,
+         *   HTTP2_HEADER_STATUS
+         * } = http2.constants;
+         *
+         * const req = clientSession.request({ [HTTP2_HEADER_PATH]: '/' });
+         * req.on('response', (headers) => {
+         *   console.log(headers[HTTP2_HEADER_STATUS]);
+         *   req.on('data', (chunk) => { // ..  });
+         *   req.on('end', () => { // ..  });
+         * });
+         * ```
+         *
+         * When the `options.waitForTrailers` option is set, the `'wantTrailers'` event
+         * is emitted immediately after queuing the last chunk of payload data to be sent.
+         * The `http2stream.sendTrailers()` method can then be called to send trailing
+         * headers to the peer.
+         *
+         * When `options.waitForTrailers` is set, the `Http2Stream` will not automatically
+         * close when the final `DATA` frame is transmitted. User code must call either`http2stream.sendTrailers()` or `http2stream.close()` to close the`Http2Stream`.
+         *
+         * When `options.signal` is set with an `AbortSignal` and then `abort` on the
+         * corresponding `AbortController` is called, the request will emit an `'error'`event with an `AbortError` error.
+         *
+         * The `:method` and `:path` pseudo-headers are not specified within `headers`,
+         * they respectively default to:
+         *
+         * * `:method` \= `'GET'`
+         * * `:path` \= `/`
+         * @since v8.4.0
+         */
+        request(headers?: OutgoingHttpHeaders, options?: ClientSessionRequestOptions): ClientHttp2Stream;
+        addListener(event: 'altsvc', listener: (alt: string, origin: string, stream: number) => void): this;
+        addListener(event: 'origin', listener: (origins: string[]) => void): this;
+        addListener(event: 'connect', listener: (session: ClientHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        addListener(event: 'stream', listener: (stream: ClientHttp2Stream, headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'altsvc', alt: string, origin: string, stream: number): boolean;
+        emit(event: 'origin', origins: ReadonlyArray<string>): boolean;
+        emit(event: 'connect', session: ClientHttp2Session, socket: net.Socket | tls.TLSSocket): boolean;
+        emit(event: 'stream', stream: ClientHttp2Stream, headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'altsvc', listener: (alt: string, origin: string, stream: number) => void): this;
+        on(event: 'origin', listener: (origins: string[]) => void): this;
+        on(event: 'connect', listener: (session: ClientHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        on(event: 'stream', listener: (stream: ClientHttp2Stream, headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'altsvc', listener: (alt: string, origin: string, stream: number) => void): this;
+        once(event: 'origin', listener: (origins: string[]) => void): this;
+        once(event: 'connect', listener: (session: ClientHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        once(event: 'stream', listener: (stream: ClientHttp2Stream, headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'altsvc', listener: (alt: string, origin: string, stream: number) => void): this;
+        prependListener(event: 'origin', listener: (origins: string[]) => void): this;
+        prependListener(event: 'connect', listener: (session: ClientHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        prependListener(event: 'stream', listener: (stream: ClientHttp2Stream, headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'altsvc', listener: (alt: string, origin: string, stream: number) => void): this;
+        prependOnceListener(event: 'origin', listener: (origins: string[]) => void): this;
+        prependOnceListener(event: 'connect', listener: (session: ClientHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        prependOnceListener(event: 'stream', listener: (stream: ClientHttp2Stream, headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    export interface AlternativeServiceOptions {
+        origin: number | string | url.URL;
+    }
+    export interface ServerHttp2Session extends Http2Session {
+        readonly server: Http2Server | Http2SecureServer;
+        /**
+         * Submits an `ALTSVC` frame (as defined by [RFC 7838](https://tools.ietf.org/html/rfc7838)) to the connected client.
+         *
+         * ```js
+         * const http2 = require('http2');
+         *
+         * const server = http2.createServer();
+         * server.on('session', (session) => {
+         *   // Set altsvc for origin https://example.org:80
+         *   session.altsvc('h2=":8000"', 'https://example.org:80');
+         * });
+         *
+         * server.on('stream', (stream) => {
+         *   // Set altsvc for a specific stream
+         *   stream.session.altsvc('h2=":8000"', stream.id);
+         * });
+         * ```
+         *
+         * Sending an `ALTSVC` frame with a specific stream ID indicates that the alternate
+         * service is associated with the origin of the given `Http2Stream`.
+         *
+         * The `alt` and origin string _must_ contain only ASCII bytes and are
+         * strictly interpreted as a sequence of ASCII bytes. The special value `'clear'`may be passed to clear any previously set alternative service for a given
+         * domain.
+         *
+         * When a string is passed for the `originOrStream` argument, it will be parsed as
+         * a URL and the origin will be derived. For instance, the origin for the
+         * HTTP URL `'https://example.org/foo/bar'` is the ASCII string`'https://example.org'`. An error will be thrown if either the given string
+         * cannot be parsed as a URL or if a valid origin cannot be derived.
+         *
+         * A `URL` object, or any object with an `origin` property, may be passed as`originOrStream`, in which case the value of the `origin` property will be
+         * used. The value of the `origin` property _must_ be a properly serialized
+         * ASCII origin.
+         * @since v9.4.0
+         * @param alt A description of the alternative service configuration as defined by `RFC 7838`.
+         * @param originOrStream Either a URL string specifying the origin (or an `Object` with an `origin` property) or the numeric identifier of an active `Http2Stream` as given by the
+         * `http2stream.id` property.
+         */
+        altsvc(alt: string, originOrStream: number | string | url.URL | AlternativeServiceOptions): void;
+        /**
+         * Submits an `ORIGIN` frame (as defined by [RFC 8336](https://tools.ietf.org/html/rfc8336)) to the connected client
+         * to advertise the set of origins for which the server is capable of providing
+         * authoritative responses.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const options = getSecureOptionsSomehow();
+         * const server = http2.createSecureServer(options);
+         * server.on('stream', (stream) => {
+         *   stream.respond();
+         *   stream.end('ok');
+         * });
+         * server.on('session', (session) => {
+         *   session.origin('https://example.com', 'https://example.org');
+         * });
+         * ```
+         *
+         * When a string is passed as an `origin`, it will be parsed as a URL and the
+         * origin will be derived. For instance, the origin for the HTTP URL`'https://example.org/foo/bar'` is the ASCII string`'https://example.org'`. An error will be thrown if either the given
+         * string
+         * cannot be parsed as a URL or if a valid origin cannot be derived.
+         *
+         * A `URL` object, or any object with an `origin` property, may be passed as
+         * an `origin`, in which case the value of the `origin` property will be
+         * used. The value of the `origin` property _must_ be a properly serialized
+         * ASCII origin.
+         *
+         * Alternatively, the `origins` option may be used when creating a new HTTP/2
+         * server using the `http2.createSecureServer()` method:
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const options = getSecureOptionsSomehow();
+         * options.origins = ['https://example.com', 'https://example.org'];
+         * const server = http2.createSecureServer(options);
+         * server.on('stream', (stream) => {
+         *   stream.respond();
+         *   stream.end('ok');
+         * });
+         * ```
+         * @since v10.12.0
+         * @param origins One or more URL Strings passed as separate arguments.
+         */
+        origin(
+            ...origins: Array<
+                | string
+                | url.URL
+                | {
+                      origin: string;
+                  }
+            >
+        ): void;
+        addListener(event: 'connect', listener: (session: ServerHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        addListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'connect', session: ServerHttp2Session, socket: net.Socket | tls.TLSSocket): boolean;
+        emit(event: 'stream', stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'connect', listener: (session: ServerHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        on(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'connect', listener: (session: ServerHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        once(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'connect', listener: (session: ServerHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        prependListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'connect', listener: (session: ServerHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        prependOnceListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    // Http2Server
+    export interface SessionOptions {
+        maxDeflateDynamicTableSize?: number | undefined;
+        maxSessionMemory?: number | undefined;
+        maxHeaderListPairs?: number | undefined;
+        maxOutstandingPings?: number | undefined;
+        maxSendHeaderBlockLength?: number | undefined;
+        paddingStrategy?: number | undefined;
+        peerMaxConcurrentStreams?: number | undefined;
+        settings?: Settings | undefined;
+        /**
+         * Specifies a timeout in milliseconds that
+         * a server should wait when an [`'unknownProtocol'`][] is emitted. If the
+         * socket has not been destroyed by that time the server will destroy it.
+         * @default 100000
+         */
+        unknownProtocolTimeout?: number | undefined;
+        selectPadding?(frameLen: number, maxFrameLen: number): number;
+        createConnection?(authority: url.URL, option: SessionOptions): stream.Duplex;
+    }
+    export interface ClientSessionOptions extends SessionOptions {
+        maxReservedRemoteStreams?: number | undefined;
+        createConnection?: ((authority: url.URL, option: SessionOptions) => stream.Duplex) | undefined;
+        protocol?: 'http:' | 'https:' | undefined;
+    }
+    export interface ServerSessionOptions extends SessionOptions {
+        Http1IncomingMessage?: typeof IncomingMessage | undefined;
+        Http1ServerResponse?: typeof ServerResponse | undefined;
+        Http2ServerRequest?: typeof Http2ServerRequest | undefined;
+        Http2ServerResponse?: typeof Http2ServerResponse | undefined;
+    }
+    export interface SecureClientSessionOptions extends ClientSessionOptions, tls.ConnectionOptions {}
+    export interface SecureServerSessionOptions extends ServerSessionOptions, tls.TlsOptions {}
+    export interface ServerOptions extends ServerSessionOptions {}
+    export interface SecureServerOptions extends SecureServerSessionOptions {
+        allowHTTP1?: boolean | undefined;
+        origins?: string[] | undefined;
+    }
+    interface HTTP2ServerCommon {
+        setTimeout(msec?: number, callback?: () => void): this;
+        /**
+         * Throws ERR_HTTP2_INVALID_SETTING_VALUE for invalid settings values.
+         * Throws ERR_INVALID_ARG_TYPE for invalid settings argument.
+         */
+        updateSettings(settings: Settings): void;
+    }
+    export interface Http2Server extends net.Server, HTTP2ServerCommon {
+        addListener(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        addListener(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        addListener(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        addListener(event: 'sessionError', listener: (err: Error) => void): this;
+        addListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        addListener(event: 'timeout', listener: () => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'checkContinue', request: Http2ServerRequest, response: Http2ServerResponse): boolean;
+        emit(event: 'request', request: Http2ServerRequest, response: Http2ServerResponse): boolean;
+        emit(event: 'session', session: ServerHttp2Session): boolean;
+        emit(event: 'sessionError', err: Error): boolean;
+        emit(event: 'stream', stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number): boolean;
+        emit(event: 'timeout'): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        on(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        on(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        on(event: 'sessionError', listener: (err: Error) => void): this;
+        on(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        on(event: 'timeout', listener: () => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        once(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        once(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        once(event: 'sessionError', listener: (err: Error) => void): this;
+        once(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        once(event: 'timeout', listener: () => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        prependListener(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        prependListener(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        prependListener(event: 'sessionError', listener: (err: Error) => void): this;
+        prependListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        prependListener(event: 'timeout', listener: () => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        prependOnceListener(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        prependOnceListener(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        prependOnceListener(event: 'sessionError', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        prependOnceListener(event: 'timeout', listener: () => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    export interface Http2SecureServer extends tls.Server, HTTP2ServerCommon {
+        addListener(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        addListener(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        addListener(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        addListener(event: 'sessionError', listener: (err: Error) => void): this;
+        addListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        addListener(event: 'timeout', listener: () => void): this;
+        addListener(event: 'unknownProtocol', listener: (socket: tls.TLSSocket) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'checkContinue', request: Http2ServerRequest, response: Http2ServerResponse): boolean;
+        emit(event: 'request', request: Http2ServerRequest, response: Http2ServerResponse): boolean;
+        emit(event: 'session', session: ServerHttp2Session): boolean;
+        emit(event: 'sessionError', err: Error): boolean;
+        emit(event: 'stream', stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number): boolean;
+        emit(event: 'timeout'): boolean;
+        emit(event: 'unknownProtocol', socket: tls.TLSSocket): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        on(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        on(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        on(event: 'sessionError', listener: (err: Error) => void): this;
+        on(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        on(event: 'timeout', listener: () => void): this;
+        on(event: 'unknownProtocol', listener: (socket: tls.TLSSocket) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        once(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        once(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        once(event: 'sessionError', listener: (err: Error) => void): this;
+        once(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        once(event: 'timeout', listener: () => void): this;
+        once(event: 'unknownProtocol', listener: (socket: tls.TLSSocket) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        prependListener(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        prependListener(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        prependListener(event: 'sessionError', listener: (err: Error) => void): this;
+        prependListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        prependListener(event: 'timeout', listener: () => void): this;
+        prependListener(event: 'unknownProtocol', listener: (socket: tls.TLSSocket) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        prependOnceListener(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        prependOnceListener(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        prependOnceListener(event: 'sessionError', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        prependOnceListener(event: 'timeout', listener: () => void): this;
+        prependOnceListener(event: 'unknownProtocol', listener: (socket: tls.TLSSocket) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    /**
+     * A `Http2ServerRequest` object is created by {@link Server} or {@link SecureServer} and passed as the first argument to the `'request'` event. It may be used to access a request status,
+     * headers, and
+     * data.
+     * @since v8.4.0
+     */
+    export class Http2ServerRequest extends stream.Readable {
+        constructor(stream: ServerHttp2Stream, headers: IncomingHttpHeaders, options: stream.ReadableOptions, rawHeaders: ReadonlyArray<string>);
+        /**
+         * The `request.aborted` property will be `true` if the request has
+         * been aborted.
+         * @since v10.1.0
+         */
+        readonly aborted: boolean;
+        /**
+         * The request authority pseudo header field. Because HTTP/2 allows requests
+         * to set either `:authority` or `host`, this value is derived from`req.headers[':authority']` if present. Otherwise, it is derived from`req.headers['host']`.
+         * @since v8.4.0
+         */
+        readonly authority: string;
+        /**
+         * See `request.socket`.
+         * @since v8.4.0
+         * @deprecated Since v13.0.0 - Use `socket`.
+         */
+        readonly connection: net.Socket | tls.TLSSocket;
+        /**
+         * The `request.complete` property will be `true` if the request has
+         * been completed, aborted, or destroyed.
+         * @since v12.10.0
+         */
+        readonly complete: boolean;
+        /**
+         * The request/response headers object.
+         *
+         * Key-value pairs of header names and values. Header names are lower-cased.
+         *
+         * ```js
+         * // Prints something like:
+         * //
+         * // { 'user-agent': 'curl/7.22.0',
+         * //   host: '127.0.0.1:8000',
+         * //   accept: '*' }
+         * console.log(request.headers);
+         * ```
+         *
+         * See `HTTP/2 Headers Object`.
+         *
+         * In HTTP/2, the request path, host name, protocol, and method are represented as
+         * special headers prefixed with the `:` character (e.g. `':path'`). These special
+         * headers will be included in the `request.headers` object. Care must be taken not
+         * to inadvertently modify these special headers or errors may occur. For instance,
+         * removing all headers from the request will cause errors to occur:
+         *
+         * ```js
+         * removeAllHeaders(request.headers);
+         * assert(request.url);   // Fails because the :path header has been removed
+         * ```
+         * @since v8.4.0
+         */
+        readonly headers: IncomingHttpHeaders;
+        /**
+         * In case of server request, the HTTP version sent by the client. In the case of
+         * client response, the HTTP version of the connected-to server. Returns`'2.0'`.
+         *
+         * Also `message.httpVersionMajor` is the first integer and`message.httpVersionMinor` is the second.
+         * @since v8.4.0
+         */
+        readonly httpVersion: string;
+        readonly httpVersionMinor: number;
+        readonly httpVersionMajor: number;
+        /**
+         * The request method as a string. Read-only. Examples: `'GET'`, `'DELETE'`.
+         * @since v8.4.0
+         */
+        readonly method: string;
+        /**
+         * The raw request/response headers list exactly as they were received.
+         *
+         * The keys and values are in the same list. It is _not_ a
+         * list of tuples. So, the even-numbered offsets are key values, and the
+         * odd-numbered offsets are the associated values.
+         *
+         * Header names are not lowercased, and duplicates are not merged.
+         *
+         * ```js
+         * // Prints something like:
+         * //
+         * // [ 'user-agent',
+         * //   'this is invalid because there can be only one',
+         * //   'User-Agent',
+         * //   'curl/7.22.0',
+         * //   'Host',
+         * //   '127.0.0.1:8000',
+         * //   'ACCEPT',
+         * //   '*' ]
+         * console.log(request.rawHeaders);
+         * ```
+         * @since v8.4.0
+         */
+        readonly rawHeaders: string[];
+        /**
+         * The raw request/response trailer keys and values exactly as they were
+         * received. Only populated at the `'end'` event.
+         * @since v8.4.0
+         */
+        readonly rawTrailers: string[];
+        /**
+         * The request scheme pseudo header field indicating the scheme
+         * portion of the target URL.
+         * @since v8.4.0
+         */
+        readonly scheme: string;
+        /**
+         * Returns a `Proxy` object that acts as a `net.Socket` (or `tls.TLSSocket`) but
+         * applies getters, setters, and methods based on HTTP/2 logic.
+         *
+         * `destroyed`, `readable`, and `writable` properties will be retrieved from and
+         * set on `request.stream`.
+         *
+         * `destroy`, `emit`, `end`, `on` and `once` methods will be called on`request.stream`.
+         *
+         * `setTimeout` method will be called on `request.stream.session`.
+         *
+         * `pause`, `read`, `resume`, and `write` will throw an error with code`ERR_HTTP2_NO_SOCKET_MANIPULATION`. See `Http2Session and Sockets` for
+         * more information.
+         *
+         * All other interactions will be routed directly to the socket. With TLS support,
+         * use `request.socket.getPeerCertificate()` to obtain the client's
+         * authentication details.
+         * @since v8.4.0
+         */
+        readonly socket: net.Socket | tls.TLSSocket;
+        /**
+         * The `Http2Stream` object backing the request.
+         * @since v8.4.0
+         */
+        readonly stream: ServerHttp2Stream;
+        /**
+         * The request/response trailers object. Only populated at the `'end'` event.
+         * @since v8.4.0
+         */
+        readonly trailers: IncomingHttpHeaders;
+        /**
+         * Request URL string. This contains only the URL that is present in the actual
+         * HTTP request. If the request is:
+         *
+         * ```http
+         * GET /status?name=ryan HTTP/1.1
+         * Accept: text/plain
+         * ```
+         *
+         * Then `request.url` will be:
+         *
+         * ```js
+         * '/status?name=ryan'
+         * ```
+         *
+         * To parse the url into its parts, `new URL()` can be used:
+         *
+         * ```console
+         * $ node
+         * > new URL('/status?name=ryan', 'http://example.com')
+         * URL {
+         *   href: 'http://example.com/status?name=ryan',
+         *   origin: 'http://example.com',
+         *   protocol: 'http:',
+         *   username: '',
+         *   password: '',
+         *   host: 'example.com',
+         *   hostname: 'example.com',
+         *   port: '',
+         *   pathname: '/status',
+         *   search: '?name=ryan',
+         *   searchParams: URLSearchParams { 'name' => 'ryan' },
+         *   hash: ''
+         * }
+         * ```
+         * @since v8.4.0
+         */
+        url: string;
+        /**
+         * Sets the `Http2Stream`'s timeout value to `msecs`. If a callback is
+         * provided, then it is added as a listener on the `'timeout'` event on
+         * the response object.
+         *
+         * If no `'timeout'` listener is added to the request, the response, or
+         * the server, then `Http2Stream` s are destroyed when they time out. If a
+         * handler is assigned to the request, the response, or the server's `'timeout'`events, timed out sockets must be handled explicitly.
+         * @since v8.4.0
+         */
+        setTimeout(msecs: number, callback?: () => void): void;
+        read(size?: number): Buffer | string | null;
+        addListener(event: 'aborted', listener: (hadError: boolean, code: number) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        addListener(event: 'end', listener: () => void): this;
+        addListener(event: 'readable', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'aborted', hadError: boolean, code: number): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'data', chunk: Buffer | string): boolean;
+        emit(event: 'end'): boolean;
+        emit(event: 'readable'): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'aborted', listener: (hadError: boolean, code: number) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        on(event: 'end', listener: () => void): this;
+        on(event: 'readable', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'aborted', listener: (hadError: boolean, code: number) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        once(event: 'end', listener: () => void): this;
+        once(event: 'readable', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'aborted', listener: (hadError: boolean, code: number) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        prependListener(event: 'end', listener: () => void): this;
+        prependListener(event: 'readable', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'aborted', listener: (hadError: boolean, code: number) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        prependOnceListener(event: 'end', listener: () => void): this;
+        prependOnceListener(event: 'readable', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    /**
+     * This object is created internally by an HTTP server, not by the user. It is
+     * passed as the second parameter to the `'request'` event.
+     * @since v8.4.0
+     */
+    export class Http2ServerResponse extends stream.Writable {
+        constructor(stream: ServerHttp2Stream);
+        /**
+         * See `response.socket`.
+         * @since v8.4.0
+         * @deprecated Since v13.0.0 - Use `socket`.
+         */
+        readonly connection: net.Socket | tls.TLSSocket;
+        /**
+         * Boolean value that indicates whether the response has completed. Starts
+         * as `false`. After `response.end()` executes, the value will be `true`.
+         * @since v8.4.0
+         * @deprecated Since v13.4.0,v12.16.0 - Use `writableEnded`.
+         */
+        readonly finished: boolean;
+        /**
+         * True if headers were sent, false otherwise (read-only).
+         * @since v8.4.0
+         */
+        readonly headersSent: boolean;
+        /**
+         * A reference to the original HTTP2 request object.
+         * @since v15.7.0
+         */
+        readonly req: Http2ServerRequest;
+        /**
+         * Returns a `Proxy` object that acts as a `net.Socket` (or `tls.TLSSocket`) but
+         * applies getters, setters, and methods based on HTTP/2 logic.
+         *
+         * `destroyed`, `readable`, and `writable` properties will be retrieved from and
+         * set on `response.stream`.
+         *
+         * `destroy`, `emit`, `end`, `on` and `once` methods will be called on`response.stream`.
+         *
+         * `setTimeout` method will be called on `response.stream.session`.
+         *
+         * `pause`, `read`, `resume`, and `write` will throw an error with code`ERR_HTTP2_NO_SOCKET_MANIPULATION`. See `Http2Session and Sockets` for
+         * more information.
+         *
+         * All other interactions will be routed directly to the socket.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const server = http2.createServer((req, res) => {
+         *   const ip = req.socket.remoteAddress;
+         *   const port = req.socket.remotePort;
+         *   res.end(`Your IP address is ${ip} and your source port is ${port}.`);
+         * }).listen(3000);
+         * ```
+         * @since v8.4.0
+         */
+        readonly socket: net.Socket | tls.TLSSocket;
+        /**
+         * The `Http2Stream` object backing the response.
+         * @since v8.4.0
+         */
+        readonly stream: ServerHttp2Stream;
+        /**
+         * When true, the Date header will be automatically generated and sent in
+         * the response if it is not already present in the headers. Defaults to true.
+         *
+         * This should only be disabled for testing; HTTP requires the Date header
+         * in responses.
+         * @since v8.4.0
+         */
+        sendDate: boolean;
+        /**
+         * When using implicit headers (not calling `response.writeHead()` explicitly),
+         * this property controls the status code that will be sent to the client when
+         * the headers get flushed.
+         *
+         * ```js
+         * response.statusCode = 404;
+         * ```
+         *
+         * After response header was sent to the client, this property indicates the
+         * status code which was sent out.
+         * @since v8.4.0
+         */
+        statusCode: number;
+        /**
+         * Status message is not supported by HTTP/2 (RFC 7540 8.1.2.4). It returns
+         * an empty string.
+         * @since v8.4.0
+         */
+        statusMessage: '';
+        /**
+         * This method adds HTTP trailing headers (a header but at the end of the
+         * message) to the response.
+         *
+         * Attempting to set a header field name or value that contains invalid characters
+         * will result in a `TypeError` being thrown.
+         * @since v8.4.0
+         */
+        addTrailers(trailers: OutgoingHttpHeaders): void;
+        /**
+         * This method signals to the server that all of the response headers and body
+         * have been sent; that server should consider this message complete.
+         * The method, `response.end()`, MUST be called on each response.
+         *
+         * If `data` is specified, it is equivalent to calling `response.write(data, encoding)` followed by `response.end(callback)`.
+         *
+         * If `callback` is specified, it will be called when the response stream
+         * is finished.
+         * @since v8.4.0
+         */
+        end(callback?: () => void): this;
+        end(data: string | Uint8Array, callback?: () => void): this;
+        end(data: string | Uint8Array, encoding: BufferEncoding, callback?: () => void): this;
+        /**
+         * Reads out a header that has already been queued but not sent to the client.
+         * The name is case-insensitive.
+         *
+         * ```js
+         * const contentType = response.getHeader('content-type');
+         * ```
+         * @since v8.4.0
+         */
+        getHeader(name: string): string;
+        /**
+         * Returns an array containing the unique names of the current outgoing headers.
+         * All header names are lowercase.
+         *
+         * ```js
+         * response.setHeader('Foo', 'bar');
+         * response.setHeader('Set-Cookie', ['foo=bar', 'bar=baz']);
+         *
+         * const headerNames = response.getHeaderNames();
+         * // headerNames === ['foo', 'set-cookie']
+         * ```
+         * @since v8.4.0
+         */
+        getHeaderNames(): string[];
+        /**
+         * Returns a shallow copy of the current outgoing headers. Since a shallow copy
+         * is used, array values may be mutated without additional calls to various
+         * header-related http module methods. The keys of the returned object are the
+         * header names and the values are the respective header values. All header names
+         * are lowercase.
+         *
+         * The object returned by the `response.getHeaders()` method _does not_prototypically inherit from the JavaScript `Object`. This means that typical`Object` methods such as `obj.toString()`,
+         * `obj.hasOwnProperty()`, and others
+         * are not defined and _will not work_.
+         *
+         * ```js
+         * response.setHeader('Foo', 'bar');
+         * response.setHeader('Set-Cookie', ['foo=bar', 'bar=baz']);
+         *
+         * const headers = response.getHeaders();
+         * // headers === { foo: 'bar', 'set-cookie': ['foo=bar', 'bar=baz'] }
+         * ```
+         * @since v8.4.0
+         */
+        getHeaders(): OutgoingHttpHeaders;
+        /**
+         * Returns `true` if the header identified by `name` is currently set in the
+         * outgoing headers. The header name matching is case-insensitive.
+         *
+         * ```js
+         * const hasContentType = response.hasHeader('content-type');
+         * ```
+         * @since v8.4.0
+         */
+        hasHeader(name: string): boolean;
+        /**
+         * Removes a header that has been queued for implicit sending.
+         *
+         * ```js
+         * response.removeHeader('Content-Encoding');
+         * ```
+         * @since v8.4.0
+         */
+        removeHeader(name: string): void;
+        /**
+         * Sets a single header value for implicit headers. If this header already exists
+         * in the to-be-sent headers, its value will be replaced. Use an array of strings
+         * here to send multiple headers with the same name.
+         *
+         * ```js
+         * response.setHeader('Content-Type', 'text/html; charset=utf-8');
+         * ```
+         *
+         * or
+         *
+         * ```js
+         * response.setHeader('Set-Cookie', ['type=ninja', 'language=javascript']);
+         * ```
+         *
+         * Attempting to set a header field name or value that contains invalid characters
+         * will result in a `TypeError` being thrown.
+         *
+         * When headers have been set with `response.setHeader()`, they will be merged
+         * with any headers passed to `response.writeHead()`, with the headers passed
+         * to `response.writeHead()` given precedence.
+         *
+         * ```js
+         * // Returns content-type = text/plain
+         * const server = http2.createServer((req, res) => {
+         *   res.setHeader('Content-Type', 'text/html; charset=utf-8');
+         *   res.setHeader('X-Foo', 'bar');
+         *   res.writeHead(200, { 'Content-Type': 'text/plain; charset=utf-8' });
+         *   res.end('ok');
+         * });
+         * ```
+         * @since v8.4.0
+         */
+        setHeader(name: string, value: number | string | ReadonlyArray<string>): void;
+        /**
+         * Sets the `Http2Stream`'s timeout value to `msecs`. If a callback is
+         * provided, then it is added as a listener on the `'timeout'` event on
+         * the response object.
+         *
+         * If no `'timeout'` listener is added to the request, the response, or
+         * the server, then `Http2Stream` s are destroyed when they time out. If a
+         * handler is assigned to the request, the response, or the server's `'timeout'`events, timed out sockets must be handled explicitly.
+         * @since v8.4.0
+         */
+        setTimeout(msecs: number, callback?: () => void): void;
+        /**
+         * If this method is called and `response.writeHead()` has not been called,
+         * it will switch to implicit header mode and flush the implicit headers.
+         *
+         * This sends a chunk of the response body. This method may
+         * be called multiple times to provide successive parts of the body.
+         *
+         * In the `http` module, the response body is omitted when the
+         * request is a HEAD request. Similarly, the `204` and `304` responses _must not_ include a message body.
+         *
+         * `chunk` can be a string or a buffer. If `chunk` is a string,
+         * the second parameter specifies how to encode it into a byte stream.
+         * By default the `encoding` is `'utf8'`. `callback` will be called when this chunk
+         * of data is flushed.
+         *
+         * This is the raw HTTP body and has nothing to do with higher-level multi-part
+         * body encodings that may be used.
+         *
+         * The first time `response.write()` is called, it will send the buffered
+         * header information and the first chunk of the body to the client. The second
+         * time `response.write()` is called, Node.js assumes data will be streamed,
+         * and sends the new data separately. That is, the response is buffered up to the
+         * first chunk of the body.
+         *
+         * Returns `true` if the entire data was flushed successfully to the kernel
+         * buffer. Returns `false` if all or part of the data was queued in user memory.`'drain'` will be emitted when the buffer is free again.
+         * @since v8.4.0
+         */
+        write(chunk: string | Uint8Array, callback?: (err: Error) => void): boolean;
+        write(chunk: string | Uint8Array, encoding: BufferEncoding, callback?: (err: Error) => void): boolean;
+        /**
+         * Sends a status `100 Continue` to the client, indicating that the request body
+         * should be sent. See the `'checkContinue'` event on `Http2Server` and`Http2SecureServer`.
+         * @since v8.4.0
+         */
+        writeContinue(): void;
+        /**
+         * Sends a response header to the request. The status code is a 3-digit HTTP
+         * status code, like `404`. The last argument, `headers`, are the response headers.
+         *
+         * Returns a reference to the `Http2ServerResponse`, so that calls can be chained.
+         *
+         * For compatibility with `HTTP/1`, a human-readable `statusMessage` may be
+         * passed as the second argument. However, because the `statusMessage` has no
+         * meaning within HTTP/2, the argument will have no effect and a process warning
+         * will be emitted.
+         *
+         * ```js
+         * const body = 'hello world';
+         * response.writeHead(200, {
+         *   'Content-Length': Buffer.byteLength(body),
+         *   'Content-Type': 'text/plain; charset=utf-8',
+         * });
+         * ```
+         *
+         * `Content-Length` is given in bytes not characters. The`Buffer.byteLength()` API may be used to determine the number of bytes in a
+         * given encoding. On outbound messages, Node.js does not check if Content-Length
+         * and the length of the body being transmitted are equal or not. However, when
+         * receiving messages, Node.js will automatically reject messages when the`Content-Length` does not match the actual payload size.
+         *
+         * This method may be called at most one time on a message before `response.end()` is called.
+         *
+         * If `response.write()` or `response.end()` are called before calling
+         * this, the implicit/mutable headers will be calculated and call this function.
+         *
+         * When headers have been set with `response.setHeader()`, they will be merged
+         * with any headers passed to `response.writeHead()`, with the headers passed
+         * to `response.writeHead()` given precedence.
+         *
+         * ```js
+         * // Returns content-type = text/plain
+         * const server = http2.createServer((req, res) => {
+         *   res.setHeader('Content-Type', 'text/html; charset=utf-8');
+         *   res.setHeader('X-Foo', 'bar');
+         *   res.writeHead(200, { 'Content-Type': 'text/plain; charset=utf-8' });
+         *   res.end('ok');
+         * });
+         * ```
+         *
+         * Attempting to set a header field name or value that contains invalid characters
+         * will result in a `TypeError` being thrown.
+         * @since v8.4.0
+         */
+        writeHead(statusCode: number, headers?: OutgoingHttpHeaders): this;
+        writeHead(statusCode: number, statusMessage: string, headers?: OutgoingHttpHeaders): this;
+        /**
+         * Call `http2stream.pushStream()` with the given headers, and wrap the
+         * given `Http2Stream` on a newly created `Http2ServerResponse` as the callback
+         * parameter if successful. When `Http2ServerRequest` is closed, the callback is
+         * called with an error `ERR_HTTP2_INVALID_STREAM`.
+         * @since v8.4.0
+         * @param headers An object describing the headers
+         * @param callback Called once `http2stream.pushStream()` is finished, or either when the attempt to create the pushed `Http2Stream` has failed or has been rejected, or the state of
+         * `Http2ServerRequest` is closed prior to calling the `http2stream.pushStream()` method
+         */
+        createPushResponse(headers: OutgoingHttpHeaders, callback: (err: Error | null, res: Http2ServerResponse) => void): void;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'drain', listener: () => void): this;
+        addListener(event: 'error', listener: (error: Error) => void): this;
+        addListener(event: 'finish', listener: () => void): this;
+        addListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        addListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'close'): boolean;
+        emit(event: 'drain'): boolean;
+        emit(event: 'error', error: Error): boolean;
+        emit(event: 'finish'): boolean;
+        emit(event: 'pipe', src: stream.Readable): boolean;
+        emit(event: 'unpipe', src: stream.Readable): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'drain', listener: () => void): this;
+        on(event: 'error', listener: (error: Error) => void): this;
+        on(event: 'finish', listener: () => void): this;
+        on(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        on(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'drain', listener: () => void): this;
+        once(event: 'error', listener: (error: Error) => void): this;
+        once(event: 'finish', listener: () => void): this;
+        once(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        once(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'drain', listener: () => void): this;
+        prependListener(event: 'error', listener: (error: Error) => void): this;
+        prependListener(event: 'finish', listener: () => void): this;
+        prependListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        prependListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'drain', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (error: Error) => void): this;
+        prependOnceListener(event: 'finish', listener: () => void): this;
+        prependOnceListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        prependOnceListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    export namespace constants {
+        const NGHTTP2_SESSION_SERVER: number;
+        const NGHTTP2_SESSION_CLIENT: number;
+        const NGHTTP2_STREAM_STATE_IDLE: number;
+        const NGHTTP2_STREAM_STATE_OPEN: number;
+        const NGHTTP2_STREAM_STATE_RESERVED_LOCAL: number;
+        const NGHTTP2_STREAM_STATE_RESERVED_REMOTE: number;
+        const NGHTTP2_STREAM_STATE_HALF_CLOSED_LOCAL: number;
+        const NGHTTP2_STREAM_STATE_HALF_CLOSED_REMOTE: number;
+        const NGHTTP2_STREAM_STATE_CLOSED: number;
+        const NGHTTP2_NO_ERROR: number;
+        const NGHTTP2_PROTOCOL_ERROR: number;
+        const NGHTTP2_INTERNAL_ERROR: number;
+        const NGHTTP2_FLOW_CONTROL_ERROR: number;
+        const NGHTTP2_SETTINGS_TIMEOUT: number;
+        const NGHTTP2_STREAM_CLOSED: number;
+        const NGHTTP2_FRAME_SIZE_ERROR: number;
+        const NGHTTP2_REFUSED_STREAM: number;
+        const NGHTTP2_CANCEL: number;
+        const NGHTTP2_COMPRESSION_ERROR: number;
+        const NGHTTP2_CONNECT_ERROR: number;
+        const NGHTTP2_ENHANCE_YOUR_CALM: number;
+        const NGHTTP2_INADEQUATE_SECURITY: number;
+        const NGHTTP2_HTTP_1_1_REQUIRED: number;
+        const NGHTTP2_ERR_FRAME_SIZE_ERROR: number;
+        const NGHTTP2_FLAG_NONE: number;
+        const NGHTTP2_FLAG_END_STREAM: number;
+        const NGHTTP2_FLAG_END_HEADERS: number;
+        const NGHTTP2_FLAG_ACK: number;
+        const NGHTTP2_FLAG_PADDED: number;
+        const NGHTTP2_FLAG_PRIORITY: number;
+        const DEFAULT_SETTINGS_HEADER_TABLE_SIZE: number;
+        const DEFAULT_SETTINGS_ENABLE_PUSH: number;
+        const DEFAULT_SETTINGS_INITIAL_WINDOW_SIZE: number;
+        const DEFAULT_SETTINGS_MAX_FRAME_SIZE: number;
+        const MAX_MAX_FRAME_SIZE: number;
+        const MIN_MAX_FRAME_SIZE: number;
+        const MAX_INITIAL_WINDOW_SIZE: number;
+        const NGHTTP2_DEFAULT_WEIGHT: number;
+        const NGHTTP2_SETTINGS_HEADER_TABLE_SIZE: number;
+        const NGHTTP2_SETTINGS_ENABLE_PUSH: number;
+        const NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS: number;
+        const NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE: number;
+        const NGHTTP2_SETTINGS_MAX_FRAME_SIZE: number;
+        const NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE: number;
+        const PADDING_STRATEGY_NONE: number;
+        const PADDING_STRATEGY_MAX: number;
+        const PADDING_STRATEGY_CALLBACK: number;
+        const HTTP2_HEADER_STATUS: string;
+        const HTTP2_HEADER_METHOD: string;
+        const HTTP2_HEADER_AUTHORITY: string;
+        const HTTP2_HEADER_SCHEME: string;
+        const HTTP2_HEADER_PATH: string;
+        const HTTP2_HEADER_ACCEPT_CHARSET: string;
+        const HTTP2_HEADER_ACCEPT_ENCODING: string;
+        const HTTP2_HEADER_ACCEPT_LANGUAGE: string;
+        const HTTP2_HEADER_ACCEPT_RANGES: string;
+        const HTTP2_HEADER_ACCEPT: string;
+        const HTTP2_HEADER_ACCESS_CONTROL_ALLOW_ORIGIN: string;
+        const HTTP2_HEADER_AGE: string;
+        const HTTP2_HEADER_ALLOW: string;
+        const HTTP2_HEADER_AUTHORIZATION: string;
+        const HTTP2_HEADER_CACHE_CONTROL: string;
+        const HTTP2_HEADER_CONNECTION: string;
+        const HTTP2_HEADER_CONTENT_DISPOSITION: string;
+        const HTTP2_HEADER_CONTENT_ENCODING: string;
+        const HTTP2_HEADER_CONTENT_LANGUAGE: string;
+        const HTTP2_HEADER_CONTENT_LENGTH: string;
+        const HTTP2_HEADER_CONTENT_LOCATION: string;
+        const HTTP2_HEADER_CONTENT_MD5: string;
+        const HTTP2_HEADER_CONTENT_RANGE: string;
+        const HTTP2_HEADER_CONTENT_TYPE: string;
+        const HTTP2_HEADER_COOKIE: string;
+        const HTTP2_HEADER_DATE: string;
+        const HTTP2_HEADER_ETAG: string;
+        const HTTP2_HEADER_EXPECT: string;
+        const HTTP2_HEADER_EXPIRES: string;
+        const HTTP2_HEADER_FROM: string;
+        const HTTP2_HEADER_HOST: string;
+        const HTTP2_HEADER_IF_MATCH: string;
+        const HTTP2_HEADER_IF_MODIFIED_SINCE: string;
+        const HTTP2_HEADER_IF_NONE_MATCH: string;
+        const HTTP2_HEADER_IF_RANGE: string;
+        const HTTP2_HEADER_IF_UNMODIFIED_SINCE: string;
+        const HTTP2_HEADER_LAST_MODIFIED: string;
+        const HTTP2_HEADER_LINK: string;
+        const HTTP2_HEADER_LOCATION: string;
+        const HTTP2_HEADER_MAX_FORWARDS: string;
+        const HTTP2_HEADER_PREFER: string;
+        const HTTP2_HEADER_PROXY_AUTHENTICATE: string;
+        const HTTP2_HEADER_PROXY_AUTHORIZATION: string;
+        const HTTP2_HEADER_RANGE: string;
+        const HTTP2_HEADER_REFERER: string;
+        const HTTP2_HEADER_REFRESH: string;
+        const HTTP2_HEADER_RETRY_AFTER: string;
+        const HTTP2_HEADER_SERVER: string;
+        const HTTP2_HEADER_SET_COOKIE: string;
+        const HTTP2_HEADER_STRICT_TRANSPORT_SECURITY: string;
+        const HTTP2_HEADER_TRANSFER_ENCODING: string;
+        const HTTP2_HEADER_TE: string;
+        const HTTP2_HEADER_UPGRADE: string;
+        const HTTP2_HEADER_USER_AGENT: string;
+        const HTTP2_HEADER_VARY: string;
+        const HTTP2_HEADER_VIA: string;
+        const HTTP2_HEADER_WWW_AUTHENTICATE: string;
+        const HTTP2_HEADER_HTTP2_SETTINGS: string;
+        const HTTP2_HEADER_KEEP_ALIVE: string;
+        const HTTP2_HEADER_PROXY_CONNECTION: string;
+        const HTTP2_METHOD_ACL: string;
+        const HTTP2_METHOD_BASELINE_CONTROL: string;
+        const HTTP2_METHOD_BIND: string;
+        const HTTP2_METHOD_CHECKIN: string;
+        const HTTP2_METHOD_CHECKOUT: string;
+        const HTTP2_METHOD_CONNECT: string;
+        const HTTP2_METHOD_COPY: string;
+        const HTTP2_METHOD_DELETE: string;
+        const HTTP2_METHOD_GET: string;
+        const HTTP2_METHOD_HEAD: string;
+        const HTTP2_METHOD_LABEL: string;
+        const HTTP2_METHOD_LINK: string;
+        const HTTP2_METHOD_LOCK: string;
+        const HTTP2_METHOD_MERGE: string;
+        const HTTP2_METHOD_MKACTIVITY: string;
+        const HTTP2_METHOD_MKCALENDAR: string;
+        const HTTP2_METHOD_MKCOL: string;
+        const HTTP2_METHOD_MKREDIRECTREF: string;
+        const HTTP2_METHOD_MKWORKSPACE: string;
+        const HTTP2_METHOD_MOVE: string;
+        const HTTP2_METHOD_OPTIONS: string;
+        const HTTP2_METHOD_ORDERPATCH: string;
+        const HTTP2_METHOD_PATCH: string;
+        const HTTP2_METHOD_POST: string;
+        const HTTP2_METHOD_PRI: string;
+        const HTTP2_METHOD_PROPFIND: string;
+        const HTTP2_METHOD_PROPPATCH: string;
+        const HTTP2_METHOD_PUT: string;
+        const HTTP2_METHOD_REBIND: string;
+        const HTTP2_METHOD_REPORT: string;
+        const HTTP2_METHOD_SEARCH: string;
+        const HTTP2_METHOD_TRACE: string;
+        const HTTP2_METHOD_UNBIND: string;
+        const HTTP2_METHOD_UNCHECKOUT: string;
+        const HTTP2_METHOD_UNLINK: string;
+        const HTTP2_METHOD_UNLOCK: string;
+        const HTTP2_METHOD_UPDATE: string;
+        const HTTP2_METHOD_UPDATEREDIRECTREF: string;
+        const HTTP2_METHOD_VERSION_CONTROL: string;
+        const HTTP_STATUS_CONTINUE: number;
+        const HTTP_STATUS_SWITCHING_PROTOCOLS: number;
+        const HTTP_STATUS_PROCESSING: number;
+        const HTTP_STATUS_OK: number;
+        const HTTP_STATUS_CREATED: number;
+        const HTTP_STATUS_ACCEPTED: number;
+        const HTTP_STATUS_NON_AUTHORITATIVE_INFORMATION: number;
+        const HTTP_STATUS_NO_CONTENT: number;
+        const HTTP_STATUS_RESET_CONTENT: number;
+        const HTTP_STATUS_PARTIAL_CONTENT: number;
+        const HTTP_STATUS_MULTI_STATUS: number;
+        const HTTP_STATUS_ALREADY_REPORTED: number;
+        const HTTP_STATUS_IM_USED: number;
+        const HTTP_STATUS_MULTIPLE_CHOICES: number;
+        const HTTP_STATUS_MOVED_PERMANENTLY: number;
+        const HTTP_STATUS_FOUND: number;
+        const HTTP_STATUS_SEE_OTHER: number;
+        const HTTP_STATUS_NOT_MODIFIED: number;
+        const HTTP_STATUS_USE_PROXY: number;
+        const HTTP_STATUS_TEMPORARY_REDIRECT: number;
+        const HTTP_STATUS_PERMANENT_REDIRECT: number;
+        const HTTP_STATUS_BAD_REQUEST: number;
+        const HTTP_STATUS_UNAUTHORIZED: number;
+        const HTTP_STATUS_PAYMENT_REQUIRED: number;
+        const HTTP_STATUS_FORBIDDEN: number;
+        const HTTP_STATUS_NOT_FOUND: number;
+        const HTTP_STATUS_METHOD_NOT_ALLOWED: number;
+        const HTTP_STATUS_NOT_ACCEPTABLE: number;
+        const HTTP_STATUS_PROXY_AUTHENTICATION_REQUIRED: number;
+        const HTTP_STATUS_REQUEST_TIMEOUT: number;
+        const HTTP_STATUS_CONFLICT: number;
+        const HTTP_STATUS_GONE: number;
+        const HTTP_STATUS_LENGTH_REQUIRED: number;
+        const HTTP_STATUS_PRECONDITION_FAILED: number;
+        const HTTP_STATUS_PAYLOAD_TOO_LARGE: number;
+        const HTTP_STATUS_URI_TOO_LONG: number;
+        const HTTP_STATUS_UNSUPPORTED_MEDIA_TYPE: number;
+        const HTTP_STATUS_RANGE_NOT_SATISFIABLE: number;
+        const HTTP_STATUS_EXPECTATION_FAILED: number;
+        const HTTP_STATUS_TEAPOT: number;
+        const HTTP_STATUS_MISDIRECTED_REQUEST: number;
+        const HTTP_STATUS_UNPROCESSABLE_ENTITY: number;
+        const HTTP_STATUS_LOCKED: number;
+        const HTTP_STATUS_FAILED_DEPENDENCY: number;
+        const HTTP_STATUS_UNORDERED_COLLECTION: number;
+        const HTTP_STATUS_UPGRADE_REQUIRED: number;
+        const HTTP_STATUS_PRECONDITION_REQUIRED: number;
+        const HTTP_STATUS_TOO_MANY_REQUESTS: number;
+        const HTTP_STATUS_REQUEST_HEADER_FIELDS_TOO_LARGE: number;
+        const HTTP_STATUS_UNAVAILABLE_FOR_LEGAL_REASONS: number;
+        const HTTP_STATUS_INTERNAL_SERVER_ERROR: number;
+        const HTTP_STATUS_NOT_IMPLEMENTED: number;
+        const HTTP_STATUS_BAD_GATEWAY: number;
+        const HTTP_STATUS_SERVICE_UNAVAILABLE: number;
+        const HTTP_STATUS_GATEWAY_TIMEOUT: number;
+        const HTTP_STATUS_HTTP_VERSION_NOT_SUPPORTED: number;
+        const HTTP_STATUS_VARIANT_ALSO_NEGOTIATES: number;
+        const HTTP_STATUS_INSUFFICIENT_STORAGE: number;
+        const HTTP_STATUS_LOOP_DETECTED: number;
+        const HTTP_STATUS_BANDWIDTH_LIMIT_EXCEEDED: number;
+        const HTTP_STATUS_NOT_EXTENDED: number;
+        const HTTP_STATUS_NETWORK_AUTHENTICATION_REQUIRED: number;
+    }
+    /**
+     * This symbol can be set as a property on the HTTP/2 headers object with
+     * an array value in order to provide a list of headers considered sensitive.
+     */
+    export const sensitiveHeaders: symbol;
+    /**
+     * Returns an object containing the default settings for an `Http2Session`instance. This method returns a new object instance every time it is called
+     * so instances returned may be safely modified for use.
+     * @since v8.4.0
+     */
+    export function getDefaultSettings(): Settings;
+    /**
+     * Returns a `Buffer` instance containing serialized representation of the given
+     * HTTP/2 settings as specified in the [HTTP/2](https://tools.ietf.org/html/rfc7540) specification. This is intended
+     * for use with the `HTTP2-Settings` header field.
+     *
+     * ```js
+     * const http2 = require('http2');
+     *
+     * const packed = http2.getPackedSettings({ enablePush: false });
+     *
+     * console.log(packed.toString('base64'));
+     * // Prints: AAIAAAAA
+     * ```
+     * @since v8.4.0
+     */
+    export function getPackedSettings(settings: Settings): Buffer;
+    /**
+     * Returns a `HTTP/2 Settings Object` containing the deserialized settings from
+     * the given `Buffer` as generated by `http2.getPackedSettings()`.
+     * @since v8.4.0
+     * @param buf The packed settings.
+     */
+    export function getUnpackedSettings(buf: Uint8Array): Settings;
+    /**
+     * Returns a `net.Server` instance that creates and manages `Http2Session`instances.
+     *
+     * Since there are no browsers known that support [unencrypted HTTP/2](https://http2.github.io/faq/#does-http2-require-encryption), the use of {@link createSecureServer} is necessary when
+     * communicating
+     * with browser clients.
+     *
+     * ```js
+     * const http2 = require('http2');
+     *
+     * // Create an unencrypted HTTP/2 server.
+     * // Since there are no browsers known that support
+     * // unencrypted HTTP/2, the use of `http2.createSecureServer()`
+     * // is necessary when communicating with browser clients.
+     * const server = http2.createServer();
+     *
+     * server.on('stream', (stream, headers) => {
+     *   stream.respond({
+     *     'content-type': 'text/html; charset=utf-8',
+     *     ':status': 200
+     *   });
+     *   stream.end('<h1>Hello World</h1>');
+     * });
+     *
+     * server.listen(80);
+     * ```
+     * @since v8.4.0
+     * @param onRequestHandler See `Compatibility API`
+     */
+    export function createServer(onRequestHandler?: (request: Http2ServerRequest, response: Http2ServerResponse) => void): Http2Server;
+    export function createServer(options: ServerOptions, onRequestHandler?: (request: Http2ServerRequest, response: Http2ServerResponse) => void): Http2Server;
+    /**
+     * Returns a `tls.Server` instance that creates and manages `Http2Session`instances.
+     *
+     * ```js
+     * const http2 = require('http2');
+     * const fs = require('fs');
+     *
+     * const options = {
+     *   key: fs.readFileSync('server-key.pem'),
+     *   cert: fs.readFileSync('server-cert.pem')
+     * };
+     *
+     * // Create a secure HTTP/2 server
+     * const server = http2.createSecureServer(options);
+     *
+     * server.on('stream', (stream, headers) => {
+     *   stream.respond({
+     *     'content-type': 'text/html; charset=utf-8',
+     *     ':status': 200
+     *   });
+     *   stream.end('<h1>Hello World</h1>');
+     * });
+     *
+     * server.listen(80);
+     * ```
+     * @since v8.4.0
+     * @param onRequestHandler See `Compatibility API`
+     */
+    export function createSecureServer(onRequestHandler?: (request: Http2ServerRequest, response: Http2ServerResponse) => void): Http2SecureServer;
+    export function createSecureServer(options: SecureServerOptions, onRequestHandler?: (request: Http2ServerRequest, response: Http2ServerResponse) => void): Http2SecureServer;
+    /**
+     * Returns a `ClientHttp2Session` instance.
+     *
+     * ```js
+     * const http2 = require('http2');
+     * const client = http2.connect('https://localhost:1234');
+     *
+     * // Use the client
+     *
+     * client.close();
+     * ```
+     * @since v8.4.0
+     * @param authority The remote HTTP/2 server to connect to. This must be in the form of a minimal, valid URL with the `http://` or `https://` prefix, host name, and IP port (if a non-default port
+     * is used). Userinfo (user ID and password), path, querystring, and fragment details in the URL will be ignored.
+     * @param listener Will be registered as a one-time listener of the {@link 'connect'} event.
+     */
+    export function connect(authority: string | url.URL, listener: (session: ClientHttp2Session, socket: net.Socket | tls.TLSSocket) => void): ClientHttp2Session;
+    export function connect(
+        authority: string | url.URL,
+        options?: ClientSessionOptions | SecureClientSessionOptions,
+        listener?: (session: ClientHttp2Session, socket: net.Socket | tls.TLSSocket) => void
+    ): ClientHttp2Session;
+}
+declare module 'node:http2' {
+    export * from 'http2';
+}
diff --git a/igv_component/node_modules/@types/node/https.d.ts b/igv_component/node_modules/@types/node/https.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..aae4a9584577292f328e90cf8f085c29bc9d5819
--- /dev/null
+++ b/igv_component/node_modules/@types/node/https.d.ts
@@ -0,0 +1,541 @@
+/**
+ * HTTPS is the HTTP protocol over TLS/SSL. In Node.js this is implemented as a
+ * separate module.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/https.js)
+ */
+declare module 'https' {
+    import { Duplex } from 'node:stream';
+    import * as tls from 'node:tls';
+    import * as http from 'node:http';
+    import { URL } from 'node:url';
+    type ServerOptions<
+        Request extends typeof http.IncomingMessage = typeof http.IncomingMessage,
+        Response extends typeof http.ServerResponse = typeof http.ServerResponse,
+    > = tls.SecureContextOptions & tls.TlsOptions & http.ServerOptions<Request, Response>;
+    type RequestOptions = http.RequestOptions &
+        tls.SecureContextOptions & {
+            rejectUnauthorized?: boolean | undefined; // Defaults to true
+            servername?: string | undefined; // SNI TLS Extension
+        };
+    interface AgentOptions extends http.AgentOptions, tls.ConnectionOptions {
+        rejectUnauthorized?: boolean | undefined;
+        maxCachedSessions?: number | undefined;
+    }
+    /**
+     * An `Agent` object for HTTPS similar to `http.Agent`. See {@link request} for more information.
+     * @since v0.4.5
+     */
+    class Agent extends http.Agent {
+        constructor(options?: AgentOptions);
+        options: AgentOptions;
+    }
+    interface Server<
+        Request extends typeof http.IncomingMessage = typeof http.IncomingMessage,
+        Response extends typeof http.ServerResponse = typeof http.ServerResponse,
+    > extends http.Server<Request, Response> {}
+    /**
+     * See `http.Server` for more information.
+     * @since v0.3.4
+     */
+    class Server<
+        Request extends typeof http.IncomingMessage = typeof http.IncomingMessage,
+        Response extends typeof http.ServerResponse = typeof http.ServerResponse,
+    > extends tls.Server {
+        constructor(requestListener?: http.RequestListener<Request, Response>);
+        constructor(
+            options: ServerOptions<Request, Response>,
+            requestListener?: http.RequestListener<Request, Response>,
+        );
+        /**
+         * Closes all connections connected to this server.
+         * @since v18.2.0
+         */
+        closeAllConnections(): void;
+        /**
+         * Closes all connections connected to this server which are not sending a request or waiting for a response.
+         * @since v18.2.0
+         */
+        closeIdleConnections(): void;
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'keylog', listener: (line: Buffer, tlsSocket: tls.TLSSocket) => void): this;
+        addListener(
+            event: 'newSession',
+            listener: (sessionId: Buffer, sessionData: Buffer, callback: (err: Error, resp: Buffer) => void) => void,
+        ): this;
+        addListener(
+            event: 'OCSPRequest',
+            listener: (
+                certificate: Buffer,
+                issuer: Buffer,
+                callback: (err: Error | null, resp: Buffer) => void,
+            ) => void,
+        ): this;
+        addListener(
+            event: 'resumeSession',
+            listener: (sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void) => void,
+        ): this;
+        addListener(event: 'secureConnection', listener: (tlsSocket: tls.TLSSocket) => void): this;
+        addListener(event: 'tlsClientError', listener: (err: Error, tlsSocket: tls.TLSSocket) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'connection', listener: (socket: Duplex) => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'listening', listener: () => void): this;
+        addListener(event: 'checkContinue', listener: http.RequestListener<Request, Response>): this;
+        addListener(event: 'checkExpectation', listener: http.RequestListener<Request, Response>): this;
+        addListener(event: 'clientError', listener: (err: Error, socket: Duplex) => void): this;
+        addListener(
+            event: 'connect',
+            listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void,
+        ): this;
+        addListener(event: 'request', listener: http.RequestListener<Request, Response>): this;
+        addListener(
+            event: 'upgrade',
+            listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void,
+        ): this;
+        emit(event: string, ...args: any[]): boolean;
+        emit(event: 'keylog', line: Buffer, tlsSocket: tls.TLSSocket): boolean;
+        emit(
+            event: 'newSession',
+            sessionId: Buffer,
+            sessionData: Buffer,
+            callback: (err: Error, resp: Buffer) => void,
+        ): boolean;
+        emit(
+            event: 'OCSPRequest',
+            certificate: Buffer,
+            issuer: Buffer,
+            callback: (err: Error | null, resp: Buffer) => void,
+        ): boolean;
+        emit(event: 'resumeSession', sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void): boolean;
+        emit(event: 'secureConnection', tlsSocket: tls.TLSSocket): boolean;
+        emit(event: 'tlsClientError', err: Error, tlsSocket: tls.TLSSocket): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'connection', socket: Duplex): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'listening'): boolean;
+        emit(
+            event: 'checkContinue',
+            req: InstanceType<Request>,
+            res: InstanceType<Response> & { req: InstanceType<Request> },
+        ): boolean;
+        emit(
+            event: 'checkExpectation',
+            req: InstanceType<Request>,
+            res: InstanceType<Response> & { req: InstanceType<Request> },
+        ): boolean;
+        emit(event: 'clientError', err: Error, socket: Duplex): boolean;
+        emit(event: 'connect', req: InstanceType<Request>, socket: Duplex, head: Buffer): boolean;
+        emit(
+            event: 'request',
+            req: InstanceType<Request>,
+            res: InstanceType<Response> & { req: InstanceType<Request> },
+        ): boolean;
+        emit(event: 'upgrade', req: InstanceType<Request>, socket: Duplex, head: Buffer): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'keylog', listener: (line: Buffer, tlsSocket: tls.TLSSocket) => void): this;
+        on(
+            event: 'newSession',
+            listener: (sessionId: Buffer, sessionData: Buffer, callback: (err: Error, resp: Buffer) => void) => void,
+        ): this;
+        on(
+            event: 'OCSPRequest',
+            listener: (
+                certificate: Buffer,
+                issuer: Buffer,
+                callback: (err: Error | null, resp: Buffer) => void,
+            ) => void,
+        ): this;
+        on(
+            event: 'resumeSession',
+            listener: (sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void) => void,
+        ): this;
+        on(event: 'secureConnection', listener: (tlsSocket: tls.TLSSocket) => void): this;
+        on(event: 'tlsClientError', listener: (err: Error, tlsSocket: tls.TLSSocket) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'connection', listener: (socket: Duplex) => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'listening', listener: () => void): this;
+        on(event: 'checkContinue', listener: http.RequestListener<Request, Response>): this;
+        on(event: 'checkExpectation', listener: http.RequestListener<Request, Response>): this;
+        on(event: 'clientError', listener: (err: Error, socket: Duplex) => void): this;
+        on(event: 'connect', listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void): this;
+        on(event: 'request', listener: http.RequestListener<Request, Response>): this;
+        on(event: 'upgrade', listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'keylog', listener: (line: Buffer, tlsSocket: tls.TLSSocket) => void): this;
+        once(
+            event: 'newSession',
+            listener: (sessionId: Buffer, sessionData: Buffer, callback: (err: Error, resp: Buffer) => void) => void,
+        ): this;
+        once(
+            event: 'OCSPRequest',
+            listener: (
+                certificate: Buffer,
+                issuer: Buffer,
+                callback: (err: Error | null, resp: Buffer) => void,
+            ) => void,
+        ): this;
+        once(
+            event: 'resumeSession',
+            listener: (sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void) => void,
+        ): this;
+        once(event: 'secureConnection', listener: (tlsSocket: tls.TLSSocket) => void): this;
+        once(event: 'tlsClientError', listener: (err: Error, tlsSocket: tls.TLSSocket) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'connection', listener: (socket: Duplex) => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'listening', listener: () => void): this;
+        once(event: 'checkContinue', listener: http.RequestListener<Request, Response>): this;
+        once(event: 'checkExpectation', listener: http.RequestListener<Request, Response>): this;
+        once(event: 'clientError', listener: (err: Error, socket: Duplex) => void): this;
+        once(event: 'connect', listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void): this;
+        once(event: 'request', listener: http.RequestListener<Request, Response>): this;
+        once(event: 'upgrade', listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'keylog', listener: (line: Buffer, tlsSocket: tls.TLSSocket) => void): this;
+        prependListener(
+            event: 'newSession',
+            listener: (sessionId: Buffer, sessionData: Buffer, callback: (err: Error, resp: Buffer) => void) => void,
+        ): this;
+        prependListener(
+            event: 'OCSPRequest',
+            listener: (
+                certificate: Buffer,
+                issuer: Buffer,
+                callback: (err: Error | null, resp: Buffer) => void,
+            ) => void,
+        ): this;
+        prependListener(
+            event: 'resumeSession',
+            listener: (sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void) => void,
+        ): this;
+        prependListener(event: 'secureConnection', listener: (tlsSocket: tls.TLSSocket) => void): this;
+        prependListener(event: 'tlsClientError', listener: (err: Error, tlsSocket: tls.TLSSocket) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'connection', listener: (socket: Duplex) => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'listening', listener: () => void): this;
+        prependListener(event: 'checkContinue', listener: http.RequestListener<Request, Response>): this;
+        prependListener(event: 'checkExpectation', listener: http.RequestListener<Request, Response>): this;
+        prependListener(event: 'clientError', listener: (err: Error, socket: Duplex) => void): this;
+        prependListener(
+            event: 'connect',
+            listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void,
+        ): this;
+        prependListener(event: 'request', listener: http.RequestListener<Request, Response>): this;
+        prependListener(
+            event: 'upgrade',
+            listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void,
+        ): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'keylog', listener: (line: Buffer, tlsSocket: tls.TLSSocket) => void): this;
+        prependOnceListener(
+            event: 'newSession',
+            listener: (sessionId: Buffer, sessionData: Buffer, callback: (err: Error, resp: Buffer) => void) => void,
+        ): this;
+        prependOnceListener(
+            event: 'OCSPRequest',
+            listener: (
+                certificate: Buffer,
+                issuer: Buffer,
+                callback: (err: Error | null, resp: Buffer) => void,
+            ) => void,
+        ): this;
+        prependOnceListener(
+            event: 'resumeSession',
+            listener: (sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void) => void,
+        ): this;
+        prependOnceListener(event: 'secureConnection', listener: (tlsSocket: tls.TLSSocket) => void): this;
+        prependOnceListener(event: 'tlsClientError', listener: (err: Error, tlsSocket: tls.TLSSocket) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'connection', listener: (socket: Duplex) => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'listening', listener: () => void): this;
+        prependOnceListener(event: 'checkContinue', listener: http.RequestListener<Request, Response>): this;
+        prependOnceListener(event: 'checkExpectation', listener: http.RequestListener<Request, Response>): this;
+        prependOnceListener(event: 'clientError', listener: (err: Error, socket: Duplex) => void): this;
+        prependOnceListener(
+            event: 'connect',
+            listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void,
+        ): this;
+        prependOnceListener(event: 'request', listener: http.RequestListener<Request, Response>): this;
+        prependOnceListener(
+            event: 'upgrade',
+            listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void,
+        ): this;
+    }
+    /**
+     * ```js
+     * // curl -k https://localhost:8000/
+     * const https = require('https');
+     * const fs = require('fs');
+     *
+     * const options = {
+     *   key: fs.readFileSync('test/fixtures/keys/agent2-key.pem'),
+     *   cert: fs.readFileSync('test/fixtures/keys/agent2-cert.pem')
+     * };
+     *
+     * https.createServer(options, (req, res) => {
+     *   res.writeHead(200);
+     *   res.end('hello world\n');
+     * }).listen(8000);
+     * ```
+     *
+     * Or
+     *
+     * ```js
+     * const https = require('https');
+     * const fs = require('fs');
+     *
+     * const options = {
+     *   pfx: fs.readFileSync('test/fixtures/test_cert.pfx'),
+     *   passphrase: 'sample'
+     * };
+     *
+     * https.createServer(options, (req, res) => {
+     *   res.writeHead(200);
+     *   res.end('hello world\n');
+     * }).listen(8000);
+     * ```
+     * @since v0.3.4
+     * @param options Accepts `options` from `createServer`, `createSecureContext` and `createServer`.
+     * @param requestListener A listener to be added to the `'request'` event.
+     */
+    function createServer<
+        Request extends typeof http.IncomingMessage = typeof http.IncomingMessage,
+        Response extends typeof http.ServerResponse = typeof http.ServerResponse,
+    >(requestListener?: http.RequestListener<Request, Response>): Server<Request, Response>;
+    function createServer<
+        Request extends typeof http.IncomingMessage = typeof http.IncomingMessage,
+        Response extends typeof http.ServerResponse = typeof http.ServerResponse,
+    >(
+        options: ServerOptions<Request, Response>,
+        requestListener?: http.RequestListener<Request, Response>,
+    ): Server<Request, Response>;
+    /**
+     * Makes a request to a secure web server.
+     *
+     * The following additional `options` from `tls.connect()` are also accepted:`ca`, `cert`, `ciphers`, `clientCertEngine`, `crl`, `dhparam`, `ecdhCurve`,`honorCipherOrder`, `key`, `passphrase`,
+     * `pfx`, `rejectUnauthorized`,`secureOptions`, `secureProtocol`, `servername`, `sessionIdContext`,`highWaterMark`.
+     *
+     * `options` can be an object, a string, or a `URL` object. If `options` is a
+     * string, it is automatically parsed with `new URL()`. If it is a `URL` object, it will be automatically converted to an ordinary `options` object.
+     *
+     * `https.request()` returns an instance of the `http.ClientRequest` class. The `ClientRequest` instance is a writable stream. If one needs to
+     * upload a file with a POST request, then write to the `ClientRequest` object.
+     *
+     * ```js
+     * const https = require('https');
+     *
+     * const options = {
+     *   hostname: 'encrypted.google.com',
+     *   port: 443,
+     *   path: '/',
+     *   method: 'GET'
+     * };
+     *
+     * const req = https.request(options, (res) => {
+     *   console.log('statusCode:', res.statusCode);
+     *   console.log('headers:', res.headers);
+     *
+     *   res.on('data', (d) => {
+     *     process.stdout.write(d);
+     *   });
+     * });
+     *
+     * req.on('error', (e) => {
+     *   console.error(e);
+     * });
+     * req.end();
+     * ```
+     *
+     * Example using options from `tls.connect()`:
+     *
+     * ```js
+     * const options = {
+     *   hostname: 'encrypted.google.com',
+     *   port: 443,
+     *   path: '/',
+     *   method: 'GET',
+     *   key: fs.readFileSync('test/fixtures/keys/agent2-key.pem'),
+     *   cert: fs.readFileSync('test/fixtures/keys/agent2-cert.pem')
+     * };
+     * options.agent = new https.Agent(options);
+     *
+     * const req = https.request(options, (res) => {
+     *   // ...
+     * });
+     * ```
+     *
+     * Alternatively, opt out of connection pooling by not using an `Agent`.
+     *
+     * ```js
+     * const options = {
+     *   hostname: 'encrypted.google.com',
+     *   port: 443,
+     *   path: '/',
+     *   method: 'GET',
+     *   key: fs.readFileSync('test/fixtures/keys/agent2-key.pem'),
+     *   cert: fs.readFileSync('test/fixtures/keys/agent2-cert.pem'),
+     *   agent: false
+     * };
+     *
+     * const req = https.request(options, (res) => {
+     *   // ...
+     * });
+     * ```
+     *
+     * Example using a `URL` as `options`:
+     *
+     * ```js
+     * const options = new URL('https://abc:xyz@example.com');
+     *
+     * const req = https.request(options, (res) => {
+     *   // ...
+     * });
+     * ```
+     *
+     * Example pinning on certificate fingerprint, or the public key (similar to`pin-sha256`):
+     *
+     * ```js
+     * const tls = require('tls');
+     * const https = require('https');
+     * const crypto = require('crypto');
+     *
+     * function sha256(s) {
+     *   return crypto.createHash('sha256').update(s).digest('base64');
+     * }
+     * const options = {
+     *   hostname: 'github.com',
+     *   port: 443,
+     *   path: '/',
+     *   method: 'GET',
+     *   checkServerIdentity: function(host, cert) {
+     *     // Make sure the certificate is issued to the host we are connected to
+     *     const err = tls.checkServerIdentity(host, cert);
+     *     if (err) {
+     *       return err;
+     *     }
+     *
+     *     // Pin the public key, similar to HPKP pin-sha25 pinning
+     *     const pubkey256 = 'pL1+qb9HTMRZJmuC/bB/ZI9d302BYrrqiVuRyW+DGrU=';
+     *     if (sha256(cert.pubkey) !== pubkey256) {
+     *       const msg = 'Certificate verification error: ' +
+     *         `The public key of '${cert.subject.CN}' ` +
+     *         'does not match our pinned fingerprint';
+     *       return new Error(msg);
+     *     }
+     *
+     *     // Pin the exact certificate, rather than the pub key
+     *     const cert256 = '25:FE:39:32:D9:63:8C:8A:FC:A1:9A:29:87:' +
+     *       'D8:3E:4C:1D:98:DB:71:E4:1A:48:03:98:EA:22:6A:BD:8B:93:16';
+     *     if (cert.fingerprint256 !== cert256) {
+     *       const msg = 'Certificate verification error: ' +
+     *         `The certificate of '${cert.subject.CN}' ` +
+     *         'does not match our pinned fingerprint';
+     *       return new Error(msg);
+     *     }
+     *
+     *     // This loop is informational only.
+     *     // Print the certificate and public key fingerprints of all certs in the
+     *     // chain. Its common to pin the public key of the issuer on the public
+     *     // internet, while pinning the public key of the service in sensitive
+     *     // environments.
+     *     do {
+     *       console.log('Subject Common Name:', cert.subject.CN);
+     *       console.log('  Certificate SHA256 fingerprint:', cert.fingerprint256);
+     *
+     *       hash = crypto.createHash('sha256');
+     *       console.log('  Public key ping-sha256:', sha256(cert.pubkey));
+     *
+     *       lastprint256 = cert.fingerprint256;
+     *       cert = cert.issuerCertificate;
+     *     } while (cert.fingerprint256 !== lastprint256);
+     *
+     *   },
+     * };
+     *
+     * options.agent = new https.Agent(options);
+     * const req = https.request(options, (res) => {
+     *   console.log('All OK. Server matched our pinned cert or public key');
+     *   console.log('statusCode:', res.statusCode);
+     *   // Print the HPKP values
+     *   console.log('headers:', res.headers['public-key-pins']);
+     *
+     *   res.on('data', (d) => {});
+     * });
+     *
+     * req.on('error', (e) => {
+     *   console.error(e.message);
+     * });
+     * req.end();
+     * ```
+     *
+     * Outputs for example:
+     *
+     * ```text
+     * Subject Common Name: github.com
+     *   Certificate SHA256 fingerprint: 25:FE:39:32:D9:63:8C:8A:FC:A1:9A:29:87:D8:3E:4C:1D:98:DB:71:E4:1A:48:03:98:EA:22:6A:BD:8B:93:16
+     *   Public key ping-sha256: pL1+qb9HTMRZJmuC/bB/ZI9d302BYrrqiVuRyW+DGrU=
+     * Subject Common Name: DigiCert SHA2 Extended Validation Server CA
+     *   Certificate SHA256 fingerprint: 40:3E:06:2A:26:53:05:91:13:28:5B:AF:80:A0:D4:AE:42:2C:84:8C:9F:78:FA:D0:1F:C9:4B:C5:B8:7F:EF:1A
+     *   Public key ping-sha256: RRM1dGqnDFsCJXBTHky16vi1obOlCgFFn/yOhI/y+ho=
+     * Subject Common Name: DigiCert High Assurance EV Root CA
+     *   Certificate SHA256 fingerprint: 74:31:E5:F4:C3:C1:CE:46:90:77:4F:0B:61:E0:54:40:88:3B:A9:A0:1E:D0:0B:A6:AB:D7:80:6E:D3:B1:18:CF
+     *   Public key ping-sha256: WoiWRyIOVNa9ihaBciRSC7XHjliYS9VwUGOIud4PB18=
+     * All OK. Server matched our pinned cert or public key
+     * statusCode: 200
+     * headers: max-age=0; pin-sha256="WoiWRyIOVNa9ihaBciRSC7XHjliYS9VwUGOIud4PB18="; pin-sha256="RRM1dGqnDFsCJXBTHky16vi1obOlCgFFn/yOhI/y+ho=";
+     * pin-sha256="k2v657xBsOVe1PQRwOsHsw3bsGT2VzIqz5K+59sNQws="; pin-sha256="K87oWBWM9UZfyddvDfoxL+8lpNyoUB2ptGtn0fv6G2Q="; pin-sha256="IQBnNBEiFuhj+8x6X8XLgh01V9Ic5/V3IRQLNFFc7v4=";
+     * pin-sha256="iie1VXtL7HzAMF+/PVPR9xzT80kQxdZeJ+zduCB3uj0="; pin-sha256="LvRiGEjRqfzurezaWuj8Wie2gyHMrW5Q06LspMnox7A="; includeSubDomains
+     * ```
+     * @since v0.3.6
+     * @param options Accepts all `options` from `request`, with some differences in default values:
+     */
+    function request(
+        options: RequestOptions | string | URL,
+        callback?: (res: http.IncomingMessage) => void,
+    ): http.ClientRequest;
+    function request(
+        url: string | URL,
+        options: RequestOptions,
+        callback?: (res: http.IncomingMessage) => void,
+    ): http.ClientRequest;
+    /**
+     * Like `http.get()` but for HTTPS.
+     *
+     * `options` can be an object, a string, or a `URL` object. If `options` is a
+     * string, it is automatically parsed with `new URL()`. If it is a `URL` object, it will be automatically converted to an ordinary `options` object.
+     *
+     * ```js
+     * const https = require('https');
+     *
+     * https.get('https://encrypted.google.com/', (res) => {
+     *   console.log('statusCode:', res.statusCode);
+     *   console.log('headers:', res.headers);
+     *
+     *   res.on('data', (d) => {
+     *     process.stdout.write(d);
+     *   });
+     *
+     * }).on('error', (e) => {
+     *   console.error(e);
+     * });
+     * ```
+     * @since v0.3.6
+     * @param options Accepts the same `options` as {@link request}, with the `method` always set to `GET`.
+     */
+    function get(
+        options: RequestOptions | string | URL,
+        callback?: (res: http.IncomingMessage) => void,
+    ): http.ClientRequest;
+    function get(
+        url: string | URL,
+        options: RequestOptions,
+        callback?: (res: http.IncomingMessage) => void,
+    ): http.ClientRequest;
+    let globalAgent: Agent;
+}
+declare module 'node:https' {
+    export * from 'https';
+}
diff --git a/igv_component/node_modules/@types/node/index.d.ts b/igv_component/node_modules/@types/node/index.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2cec52a84ec9acfa969f1797f3dd0b9cda0b0af1
--- /dev/null
+++ b/igv_component/node_modules/@types/node/index.d.ts
@@ -0,0 +1,132 @@
+// Type definitions for non-npm package Node.js 18.7
+// Project: https://nodejs.org/
+// Definitions by: Microsoft TypeScript <https://github.com/Microsoft>
+//                 DefinitelyTyped <https://github.com/DefinitelyTyped>
+//                 Alberto Schiabel <https://github.com/jkomyno>
+//                 Alvis HT Tang <https://github.com/alvis>
+//                 Andrew Makarov <https://github.com/r3nya>
+//                 Benjamin Toueg <https://github.com/btoueg>
+//                 Chigozirim C. <https://github.com/smac89>
+//                 David Junger <https://github.com/touffy>
+//                 Deividas Bakanas <https://github.com/DeividasBakanas>
+//                 Eugene Y. Q. Shen <https://github.com/eyqs>
+//                 Hannes Magnusson <https://github.com/Hannes-Magnusson-CK>
+//                 Huw <https://github.com/hoo29>
+//                 Kelvin Jin <https://github.com/kjin>
+//                 Klaus Meinhardt <https://github.com/ajafff>
+//                 Lishude <https://github.com/islishude>
+//                 Mariusz Wiktorczyk <https://github.com/mwiktorczyk>
+//                 Mohsen Azimi <https://github.com/mohsen1>
+//                 Nicolas Even <https://github.com/n-e>
+//                 Nikita Galkin <https://github.com/galkin>
+//                 Parambir Singh <https://github.com/parambirs>
+//                 Sebastian Silbermann <https://github.com/eps1lon>
+//                 Simon Schick <https://github.com/SimonSchick>
+//                 Thomas den Hollander <https://github.com/ThomasdenH>
+//                 Wilco Bakker <https://github.com/WilcoBakker>
+//                 wwwy3y3 <https://github.com/wwwy3y3>
+//                 Samuel Ainsworth <https://github.com/samuela>
+//                 Kyle Uehlein <https://github.com/kuehlein>
+//                 Thanik Bhongbhibhat <https://github.com/bhongy>
+//                 Marcin Kopacz <https://github.com/chyzwar>
+//                 Trivikram Kamat <https://github.com/trivikr>
+//                 Junxiao Shi <https://github.com/yoursunny>
+//                 Ilia Baryshnikov <https://github.com/qwelias>
+//                 ExE Boss <https://github.com/ExE-Boss>
+//                 Piotr Błażejewicz <https://github.com/peterblazejewicz>
+//                 Anna Henningsen <https://github.com/addaleax>
+//                 Victor Perin <https://github.com/victorperin>
+//                 Yongsheng Zhang <https://github.com/ZYSzys>
+//                 NodeJS Contributors <https://github.com/NodeJS>
+//                 Linus Unnebäck <https://github.com/LinusU>
+//                 wafuwafu13 <https://github.com/wafuwafu13>
+//                 Matteo Collina <https://github.com/mcollina>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+/**
+ * License for programmatically and manually incorporated
+ * documentation aka. `JSDoc` from https://github.com/nodejs/node/tree/master/doc
+ *
+ * Copyright Node.js contributors. All rights reserved.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+// NOTE: These definitions support NodeJS and TypeScript 4.9+.
+
+// Reference required types from the default lib:
+/// <reference lib="es2020" />
+/// <reference lib="esnext.asynciterable" />
+/// <reference lib="esnext.intl" />
+/// <reference lib="esnext.bigint" />
+
+// Base definitions for all NodeJS modules that are not specific to any version of TypeScript:
+/// <reference path="assert.d.ts" />
+/// <reference path="assert/strict.d.ts" />
+/// <reference path="globals.d.ts" />
+/// <reference path="async_hooks.d.ts" />
+/// <reference path="buffer.d.ts" />
+/// <reference path="child_process.d.ts" />
+/// <reference path="cluster.d.ts" />
+/// <reference path="console.d.ts" />
+/// <reference path="constants.d.ts" />
+/// <reference path="crypto.d.ts" />
+/// <reference path="dgram.d.ts" />
+/// <reference path="diagnostics_channel.d.ts" />
+/// <reference path="dns.d.ts" />
+/// <reference path="dns/promises.d.ts" />
+/// <reference path="dns/promises.d.ts" />
+/// <reference path="domain.d.ts" />
+/// <reference path="events.d.ts" />
+/// <reference path="fs.d.ts" />
+/// <reference path="fs/promises.d.ts" />
+/// <reference path="http.d.ts" />
+/// <reference path="http2.d.ts" />
+/// <reference path="https.d.ts" />
+/// <reference path="inspector.d.ts" />
+/// <reference path="module.d.ts" />
+/// <reference path="net.d.ts" />
+/// <reference path="os.d.ts" />
+/// <reference path="path.d.ts" />
+/// <reference path="perf_hooks.d.ts" />
+/// <reference path="process.d.ts" />
+/// <reference path="punycode.d.ts" />
+/// <reference path="querystring.d.ts" />
+/// <reference path="readline.d.ts" />
+/// <reference path="readline/promises.d.ts" />
+/// <reference path="repl.d.ts" />
+/// <reference path="stream.d.ts" />
+/// <reference path="stream/promises.d.ts" />
+/// <reference path="stream/consumers.d.ts" />
+/// <reference path="stream/web.d.ts" />
+/// <reference path="string_decoder.d.ts" />
+/// <reference path="test.d.ts" />
+/// <reference path="timers.d.ts" />
+/// <reference path="timers/promises.d.ts" />
+/// <reference path="tls.d.ts" />
+/// <reference path="trace_events.d.ts" />
+/// <reference path="tty.d.ts" />
+/// <reference path="url.d.ts" />
+/// <reference path="util.d.ts" />
+/// <reference path="v8.d.ts" />
+/// <reference path="vm.d.ts" />
+/// <reference path="wasi.d.ts" />
+/// <reference path="worker_threads.d.ts" />
+/// <reference path="zlib.d.ts" />
+
+/// <reference path="globals.global.d.ts" />
diff --git a/igv_component/node_modules/@types/node/inspector.d.ts b/igv_component/node_modules/@types/node/inspector.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..eba0b55d8bca0ef10cbf24922fb899b67c35f3a9
--- /dev/null
+++ b/igv_component/node_modules/@types/node/inspector.d.ts
@@ -0,0 +1,2741 @@
+// eslint-disable-next-line dt-header
+// Type definitions for inspector
+
+// These definitions are auto-generated.
+// Please see https://github.com/DefinitelyTyped/DefinitelyTyped/pull/19330
+// for more information.
+
+// tslint:disable:max-line-length
+
+/**
+ * The `inspector` module provides an API for interacting with the V8 inspector.
+ *
+ * It can be accessed using:
+ *
+ * ```js
+ * const inspector = require('inspector');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/inspector.js)
+ */
+declare module 'inspector' {
+    import EventEmitter = require('node:events');
+    interface InspectorNotification<T> {
+        method: string;
+        params: T;
+    }
+    namespace Schema {
+        /**
+         * Description of the protocol domain.
+         */
+        interface Domain {
+            /**
+             * Domain name.
+             */
+            name: string;
+            /**
+             * Domain version.
+             */
+            version: string;
+        }
+        interface GetDomainsReturnType {
+            /**
+             * List of supported domains.
+             */
+            domains: Domain[];
+        }
+    }
+    namespace Runtime {
+        /**
+         * Unique script identifier.
+         */
+        type ScriptId = string;
+        /**
+         * Unique object identifier.
+         */
+        type RemoteObjectId = string;
+        /**
+         * Primitive value which cannot be JSON-stringified.
+         */
+        type UnserializableValue = string;
+        /**
+         * Mirror object referencing original JavaScript object.
+         */
+        interface RemoteObject {
+            /**
+             * Object type.
+             */
+            type: string;
+            /**
+             * Object subtype hint. Specified for <code>object</code> type values only.
+             */
+            subtype?: string | undefined;
+            /**
+             * Object class (constructor) name. Specified for <code>object</code> type values only.
+             */
+            className?: string | undefined;
+            /**
+             * Remote object value in case of primitive values or JSON values (if it was requested).
+             */
+            value?: any;
+            /**
+             * Primitive value which can not be JSON-stringified does not have <code>value</code>, but gets this property.
+             */
+            unserializableValue?: UnserializableValue | undefined;
+            /**
+             * String representation of the object.
+             */
+            description?: string | undefined;
+            /**
+             * Unique object identifier (for non-primitive values).
+             */
+            objectId?: RemoteObjectId | undefined;
+            /**
+             * Preview containing abbreviated property values. Specified for <code>object</code> type values only.
+             * @experimental
+             */
+            preview?: ObjectPreview | undefined;
+            /**
+             * @experimental
+             */
+            customPreview?: CustomPreview | undefined;
+        }
+        /**
+         * @experimental
+         */
+        interface CustomPreview {
+            header: string;
+            hasBody: boolean;
+            formatterObjectId: RemoteObjectId;
+            bindRemoteObjectFunctionId: RemoteObjectId;
+            configObjectId?: RemoteObjectId | undefined;
+        }
+        /**
+         * Object containing abbreviated remote object value.
+         * @experimental
+         */
+        interface ObjectPreview {
+            /**
+             * Object type.
+             */
+            type: string;
+            /**
+             * Object subtype hint. Specified for <code>object</code> type values only.
+             */
+            subtype?: string | undefined;
+            /**
+             * String representation of the object.
+             */
+            description?: string | undefined;
+            /**
+             * True iff some of the properties or entries of the original object did not fit.
+             */
+            overflow: boolean;
+            /**
+             * List of the properties.
+             */
+            properties: PropertyPreview[];
+            /**
+             * List of the entries. Specified for <code>map</code> and <code>set</code> subtype values only.
+             */
+            entries?: EntryPreview[] | undefined;
+        }
+        /**
+         * @experimental
+         */
+        interface PropertyPreview {
+            /**
+             * Property name.
+             */
+            name: string;
+            /**
+             * Object type. Accessor means that the property itself is an accessor property.
+             */
+            type: string;
+            /**
+             * User-friendly property value string.
+             */
+            value?: string | undefined;
+            /**
+             * Nested value preview.
+             */
+            valuePreview?: ObjectPreview | undefined;
+            /**
+             * Object subtype hint. Specified for <code>object</code> type values only.
+             */
+            subtype?: string | undefined;
+        }
+        /**
+         * @experimental
+         */
+        interface EntryPreview {
+            /**
+             * Preview of the key. Specified for map-like collection entries.
+             */
+            key?: ObjectPreview | undefined;
+            /**
+             * Preview of the value.
+             */
+            value: ObjectPreview;
+        }
+        /**
+         * Object property descriptor.
+         */
+        interface PropertyDescriptor {
+            /**
+             * Property name or symbol description.
+             */
+            name: string;
+            /**
+             * The value associated with the property.
+             */
+            value?: RemoteObject | undefined;
+            /**
+             * True if the value associated with the property may be changed (data descriptors only).
+             */
+            writable?: boolean | undefined;
+            /**
+             * A function which serves as a getter for the property, or <code>undefined</code> if there is no getter (accessor descriptors only).
+             */
+            get?: RemoteObject | undefined;
+            /**
+             * A function which serves as a setter for the property, or <code>undefined</code> if there is no setter (accessor descriptors only).
+             */
+            set?: RemoteObject | undefined;
+            /**
+             * True if the type of this property descriptor may be changed and if the property may be deleted from the corresponding object.
+             */
+            configurable: boolean;
+            /**
+             * True if this property shows up during enumeration of the properties on the corresponding object.
+             */
+            enumerable: boolean;
+            /**
+             * True if the result was thrown during the evaluation.
+             */
+            wasThrown?: boolean | undefined;
+            /**
+             * True if the property is owned for the object.
+             */
+            isOwn?: boolean | undefined;
+            /**
+             * Property symbol object, if the property is of the <code>symbol</code> type.
+             */
+            symbol?: RemoteObject | undefined;
+        }
+        /**
+         * Object internal property descriptor. This property isn't normally visible in JavaScript code.
+         */
+        interface InternalPropertyDescriptor {
+            /**
+             * Conventional property name.
+             */
+            name: string;
+            /**
+             * The value associated with the property.
+             */
+            value?: RemoteObject | undefined;
+        }
+        /**
+         * Represents function call argument. Either remote object id <code>objectId</code>, primitive <code>value</code>, unserializable primitive value or neither of (for undefined) them should be specified.
+         */
+        interface CallArgument {
+            /**
+             * Primitive value or serializable javascript object.
+             */
+            value?: any;
+            /**
+             * Primitive value which can not be JSON-stringified.
+             */
+            unserializableValue?: UnserializableValue | undefined;
+            /**
+             * Remote object handle.
+             */
+            objectId?: RemoteObjectId | undefined;
+        }
+        /**
+         * Id of an execution context.
+         */
+        type ExecutionContextId = number;
+        /**
+         * Description of an isolated world.
+         */
+        interface ExecutionContextDescription {
+            /**
+             * Unique id of the execution context. It can be used to specify in which execution context script evaluation should be performed.
+             */
+            id: ExecutionContextId;
+            /**
+             * Execution context origin.
+             */
+            origin: string;
+            /**
+             * Human readable name describing given context.
+             */
+            name: string;
+            /**
+             * Embedder-specific auxiliary data.
+             */
+            auxData?: {} | undefined;
+        }
+        /**
+         * Detailed information about exception (or error) that was thrown during script compilation or execution.
+         */
+        interface ExceptionDetails {
+            /**
+             * Exception id.
+             */
+            exceptionId: number;
+            /**
+             * Exception text, which should be used together with exception object when available.
+             */
+            text: string;
+            /**
+             * Line number of the exception location (0-based).
+             */
+            lineNumber: number;
+            /**
+             * Column number of the exception location (0-based).
+             */
+            columnNumber: number;
+            /**
+             * Script ID of the exception location.
+             */
+            scriptId?: ScriptId | undefined;
+            /**
+             * URL of the exception location, to be used when the script was not reported.
+             */
+            url?: string | undefined;
+            /**
+             * JavaScript stack trace if available.
+             */
+            stackTrace?: StackTrace | undefined;
+            /**
+             * Exception object if available.
+             */
+            exception?: RemoteObject | undefined;
+            /**
+             * Identifier of the context where exception happened.
+             */
+            executionContextId?: ExecutionContextId | undefined;
+        }
+        /**
+         * Number of milliseconds since epoch.
+         */
+        type Timestamp = number;
+        /**
+         * Stack entry for runtime errors and assertions.
+         */
+        interface CallFrame {
+            /**
+             * JavaScript function name.
+             */
+            functionName: string;
+            /**
+             * JavaScript script id.
+             */
+            scriptId: ScriptId;
+            /**
+             * JavaScript script name or url.
+             */
+            url: string;
+            /**
+             * JavaScript script line number (0-based).
+             */
+            lineNumber: number;
+            /**
+             * JavaScript script column number (0-based).
+             */
+            columnNumber: number;
+        }
+        /**
+         * Call frames for assertions or error messages.
+         */
+        interface StackTrace {
+            /**
+             * String label of this stack trace. For async traces this may be a name of the function that initiated the async call.
+             */
+            description?: string | undefined;
+            /**
+             * JavaScript function name.
+             */
+            callFrames: CallFrame[];
+            /**
+             * Asynchronous JavaScript stack trace that preceded this stack, if available.
+             */
+            parent?: StackTrace | undefined;
+            /**
+             * Asynchronous JavaScript stack trace that preceded this stack, if available.
+             * @experimental
+             */
+            parentId?: StackTraceId | undefined;
+        }
+        /**
+         * Unique identifier of current debugger.
+         * @experimental
+         */
+        type UniqueDebuggerId = string;
+        /**
+         * If <code>debuggerId</code> is set stack trace comes from another debugger and can be resolved there. This allows to track cross-debugger calls. See <code>Runtime.StackTrace</code> and <code>Debugger.paused</code> for usages.
+         * @experimental
+         */
+        interface StackTraceId {
+            id: string;
+            debuggerId?: UniqueDebuggerId | undefined;
+        }
+        interface EvaluateParameterType {
+            /**
+             * Expression to evaluate.
+             */
+            expression: string;
+            /**
+             * Symbolic group name that can be used to release multiple objects.
+             */
+            objectGroup?: string | undefined;
+            /**
+             * Determines whether Command Line API should be available during the evaluation.
+             */
+            includeCommandLineAPI?: boolean | undefined;
+            /**
+             * In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides <code>setPauseOnException</code> state.
+             */
+            silent?: boolean | undefined;
+            /**
+             * Specifies in which execution context to perform evaluation. If the parameter is omitted the evaluation will be performed in the context of the inspected page.
+             */
+            contextId?: ExecutionContextId | undefined;
+            /**
+             * Whether the result is expected to be a JSON object that should be sent by value.
+             */
+            returnByValue?: boolean | undefined;
+            /**
+             * Whether preview should be generated for the result.
+             * @experimental
+             */
+            generatePreview?: boolean | undefined;
+            /**
+             * Whether execution should be treated as initiated by user in the UI.
+             */
+            userGesture?: boolean | undefined;
+            /**
+             * Whether execution should <code>await</code> for resulting value and return once awaited promise is resolved.
+             */
+            awaitPromise?: boolean | undefined;
+        }
+        interface AwaitPromiseParameterType {
+            /**
+             * Identifier of the promise.
+             */
+            promiseObjectId: RemoteObjectId;
+            /**
+             * Whether the result is expected to be a JSON object that should be sent by value.
+             */
+            returnByValue?: boolean | undefined;
+            /**
+             * Whether preview should be generated for the result.
+             */
+            generatePreview?: boolean | undefined;
+        }
+        interface CallFunctionOnParameterType {
+            /**
+             * Declaration of the function to call.
+             */
+            functionDeclaration: string;
+            /**
+             * Identifier of the object to call function on. Either objectId or executionContextId should be specified.
+             */
+            objectId?: RemoteObjectId | undefined;
+            /**
+             * Call arguments. All call arguments must belong to the same JavaScript world as the target object.
+             */
+            arguments?: CallArgument[] | undefined;
+            /**
+             * In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides <code>setPauseOnException</code> state.
+             */
+            silent?: boolean | undefined;
+            /**
+             * Whether the result is expected to be a JSON object which should be sent by value.
+             */
+            returnByValue?: boolean | undefined;
+            /**
+             * Whether preview should be generated for the result.
+             * @experimental
+             */
+            generatePreview?: boolean | undefined;
+            /**
+             * Whether execution should be treated as initiated by user in the UI.
+             */
+            userGesture?: boolean | undefined;
+            /**
+             * Whether execution should <code>await</code> for resulting value and return once awaited promise is resolved.
+             */
+            awaitPromise?: boolean | undefined;
+            /**
+             * Specifies execution context which global object will be used to call function on. Either executionContextId or objectId should be specified.
+             */
+            executionContextId?: ExecutionContextId | undefined;
+            /**
+             * Symbolic group name that can be used to release multiple objects. If objectGroup is not specified and objectId is, objectGroup will be inherited from object.
+             */
+            objectGroup?: string | undefined;
+        }
+        interface GetPropertiesParameterType {
+            /**
+             * Identifier of the object to return properties for.
+             */
+            objectId: RemoteObjectId;
+            /**
+             * If true, returns properties belonging only to the element itself, not to its prototype chain.
+             */
+            ownProperties?: boolean | undefined;
+            /**
+             * If true, returns accessor properties (with getter/setter) only; internal properties are not returned either.
+             * @experimental
+             */
+            accessorPropertiesOnly?: boolean | undefined;
+            /**
+             * Whether preview should be generated for the results.
+             * @experimental
+             */
+            generatePreview?: boolean | undefined;
+        }
+        interface ReleaseObjectParameterType {
+            /**
+             * Identifier of the object to release.
+             */
+            objectId: RemoteObjectId;
+        }
+        interface ReleaseObjectGroupParameterType {
+            /**
+             * Symbolic object group name.
+             */
+            objectGroup: string;
+        }
+        interface SetCustomObjectFormatterEnabledParameterType {
+            enabled: boolean;
+        }
+        interface CompileScriptParameterType {
+            /**
+             * Expression to compile.
+             */
+            expression: string;
+            /**
+             * Source url to be set for the script.
+             */
+            sourceURL: string;
+            /**
+             * Specifies whether the compiled script should be persisted.
+             */
+            persistScript: boolean;
+            /**
+             * Specifies in which execution context to perform script run. If the parameter is omitted the evaluation will be performed in the context of the inspected page.
+             */
+            executionContextId?: ExecutionContextId | undefined;
+        }
+        interface RunScriptParameterType {
+            /**
+             * Id of the script to run.
+             */
+            scriptId: ScriptId;
+            /**
+             * Specifies in which execution context to perform script run. If the parameter is omitted the evaluation will be performed in the context of the inspected page.
+             */
+            executionContextId?: ExecutionContextId | undefined;
+            /**
+             * Symbolic group name that can be used to release multiple objects.
+             */
+            objectGroup?: string | undefined;
+            /**
+             * In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides <code>setPauseOnException</code> state.
+             */
+            silent?: boolean | undefined;
+            /**
+             * Determines whether Command Line API should be available during the evaluation.
+             */
+            includeCommandLineAPI?: boolean | undefined;
+            /**
+             * Whether the result is expected to be a JSON object which should be sent by value.
+             */
+            returnByValue?: boolean | undefined;
+            /**
+             * Whether preview should be generated for the result.
+             */
+            generatePreview?: boolean | undefined;
+            /**
+             * Whether execution should <code>await</code> for resulting value and return once awaited promise is resolved.
+             */
+            awaitPromise?: boolean | undefined;
+        }
+        interface QueryObjectsParameterType {
+            /**
+             * Identifier of the prototype to return objects for.
+             */
+            prototypeObjectId: RemoteObjectId;
+        }
+        interface GlobalLexicalScopeNamesParameterType {
+            /**
+             * Specifies in which execution context to lookup global scope variables.
+             */
+            executionContextId?: ExecutionContextId | undefined;
+        }
+        interface EvaluateReturnType {
+            /**
+             * Evaluation result.
+             */
+            result: RemoteObject;
+            /**
+             * Exception details.
+             */
+            exceptionDetails?: ExceptionDetails | undefined;
+        }
+        interface AwaitPromiseReturnType {
+            /**
+             * Promise result. Will contain rejected value if promise was rejected.
+             */
+            result: RemoteObject;
+            /**
+             * Exception details if stack strace is available.
+             */
+            exceptionDetails?: ExceptionDetails | undefined;
+        }
+        interface CallFunctionOnReturnType {
+            /**
+             * Call result.
+             */
+            result: RemoteObject;
+            /**
+             * Exception details.
+             */
+            exceptionDetails?: ExceptionDetails | undefined;
+        }
+        interface GetPropertiesReturnType {
+            /**
+             * Object properties.
+             */
+            result: PropertyDescriptor[];
+            /**
+             * Internal object properties (only of the element itself).
+             */
+            internalProperties?: InternalPropertyDescriptor[] | undefined;
+            /**
+             * Exception details.
+             */
+            exceptionDetails?: ExceptionDetails | undefined;
+        }
+        interface CompileScriptReturnType {
+            /**
+             * Id of the script.
+             */
+            scriptId?: ScriptId | undefined;
+            /**
+             * Exception details.
+             */
+            exceptionDetails?: ExceptionDetails | undefined;
+        }
+        interface RunScriptReturnType {
+            /**
+             * Run result.
+             */
+            result: RemoteObject;
+            /**
+             * Exception details.
+             */
+            exceptionDetails?: ExceptionDetails | undefined;
+        }
+        interface QueryObjectsReturnType {
+            /**
+             * Array with objects.
+             */
+            objects: RemoteObject;
+        }
+        interface GlobalLexicalScopeNamesReturnType {
+            names: string[];
+        }
+        interface ExecutionContextCreatedEventDataType {
+            /**
+             * A newly created execution context.
+             */
+            context: ExecutionContextDescription;
+        }
+        interface ExecutionContextDestroyedEventDataType {
+            /**
+             * Id of the destroyed context
+             */
+            executionContextId: ExecutionContextId;
+        }
+        interface ExceptionThrownEventDataType {
+            /**
+             * Timestamp of the exception.
+             */
+            timestamp: Timestamp;
+            exceptionDetails: ExceptionDetails;
+        }
+        interface ExceptionRevokedEventDataType {
+            /**
+             * Reason describing why exception was revoked.
+             */
+            reason: string;
+            /**
+             * The id of revoked exception, as reported in <code>exceptionThrown</code>.
+             */
+            exceptionId: number;
+        }
+        interface ConsoleAPICalledEventDataType {
+            /**
+             * Type of the call.
+             */
+            type: string;
+            /**
+             * Call arguments.
+             */
+            args: RemoteObject[];
+            /**
+             * Identifier of the context where the call was made.
+             */
+            executionContextId: ExecutionContextId;
+            /**
+             * Call timestamp.
+             */
+            timestamp: Timestamp;
+            /**
+             * Stack trace captured when the call was made.
+             */
+            stackTrace?: StackTrace | undefined;
+            /**
+             * Console context descriptor for calls on non-default console context (not console.*): 'anonymous#unique-logger-id' for call on unnamed context, 'name#unique-logger-id' for call on named context.
+             * @experimental
+             */
+            context?: string | undefined;
+        }
+        interface InspectRequestedEventDataType {
+            object: RemoteObject;
+            hints: {};
+        }
+    }
+    namespace Debugger {
+        /**
+         * Breakpoint identifier.
+         */
+        type BreakpointId = string;
+        /**
+         * Call frame identifier.
+         */
+        type CallFrameId = string;
+        /**
+         * Location in the source code.
+         */
+        interface Location {
+            /**
+             * Script identifier as reported in the <code>Debugger.scriptParsed</code>.
+             */
+            scriptId: Runtime.ScriptId;
+            /**
+             * Line number in the script (0-based).
+             */
+            lineNumber: number;
+            /**
+             * Column number in the script (0-based).
+             */
+            columnNumber?: number | undefined;
+        }
+        /**
+         * Location in the source code.
+         * @experimental
+         */
+        interface ScriptPosition {
+            lineNumber: number;
+            columnNumber: number;
+        }
+        /**
+         * JavaScript call frame. Array of call frames form the call stack.
+         */
+        interface CallFrame {
+            /**
+             * Call frame identifier. This identifier is only valid while the virtual machine is paused.
+             */
+            callFrameId: CallFrameId;
+            /**
+             * Name of the JavaScript function called on this call frame.
+             */
+            functionName: string;
+            /**
+             * Location in the source code.
+             */
+            functionLocation?: Location | undefined;
+            /**
+             * Location in the source code.
+             */
+            location: Location;
+            /**
+             * JavaScript script name or url.
+             */
+            url: string;
+            /**
+             * Scope chain for this call frame.
+             */
+            scopeChain: Scope[];
+            /**
+             * <code>this</code> object for this call frame.
+             */
+            this: Runtime.RemoteObject;
+            /**
+             * The value being returned, if the function is at return point.
+             */
+            returnValue?: Runtime.RemoteObject | undefined;
+        }
+        /**
+         * Scope description.
+         */
+        interface Scope {
+            /**
+             * Scope type.
+             */
+            type: string;
+            /**
+             * Object representing the scope. For <code>global</code> and <code>with</code> scopes it represents the actual object; for the rest of the scopes, it is artificial transient object enumerating scope variables as its properties.
+             */
+            object: Runtime.RemoteObject;
+            name?: string | undefined;
+            /**
+             * Location in the source code where scope starts
+             */
+            startLocation?: Location | undefined;
+            /**
+             * Location in the source code where scope ends
+             */
+            endLocation?: Location | undefined;
+        }
+        /**
+         * Search match for resource.
+         */
+        interface SearchMatch {
+            /**
+             * Line number in resource content.
+             */
+            lineNumber: number;
+            /**
+             * Line with match content.
+             */
+            lineContent: string;
+        }
+        interface BreakLocation {
+            /**
+             * Script identifier as reported in the <code>Debugger.scriptParsed</code>.
+             */
+            scriptId: Runtime.ScriptId;
+            /**
+             * Line number in the script (0-based).
+             */
+            lineNumber: number;
+            /**
+             * Column number in the script (0-based).
+             */
+            columnNumber?: number | undefined;
+            type?: string | undefined;
+        }
+        interface SetBreakpointsActiveParameterType {
+            /**
+             * New value for breakpoints active state.
+             */
+            active: boolean;
+        }
+        interface SetSkipAllPausesParameterType {
+            /**
+             * New value for skip pauses state.
+             */
+            skip: boolean;
+        }
+        interface SetBreakpointByUrlParameterType {
+            /**
+             * Line number to set breakpoint at.
+             */
+            lineNumber: number;
+            /**
+             * URL of the resources to set breakpoint on.
+             */
+            url?: string | undefined;
+            /**
+             * Regex pattern for the URLs of the resources to set breakpoints on. Either <code>url</code> or <code>urlRegex</code> must be specified.
+             */
+            urlRegex?: string | undefined;
+            /**
+             * Script hash of the resources to set breakpoint on.
+             */
+            scriptHash?: string | undefined;
+            /**
+             * Offset in the line to set breakpoint at.
+             */
+            columnNumber?: number | undefined;
+            /**
+             * Expression to use as a breakpoint condition. When specified, debugger will only stop on the breakpoint if this expression evaluates to true.
+             */
+            condition?: string | undefined;
+        }
+        interface SetBreakpointParameterType {
+            /**
+             * Location to set breakpoint in.
+             */
+            location: Location;
+            /**
+             * Expression to use as a breakpoint condition. When specified, debugger will only stop on the breakpoint if this expression evaluates to true.
+             */
+            condition?: string | undefined;
+        }
+        interface RemoveBreakpointParameterType {
+            breakpointId: BreakpointId;
+        }
+        interface GetPossibleBreakpointsParameterType {
+            /**
+             * Start of range to search possible breakpoint locations in.
+             */
+            start: Location;
+            /**
+             * End of range to search possible breakpoint locations in (excluding). When not specified, end of scripts is used as end of range.
+             */
+            end?: Location | undefined;
+            /**
+             * Only consider locations which are in the same (non-nested) function as start.
+             */
+            restrictToFunction?: boolean | undefined;
+        }
+        interface ContinueToLocationParameterType {
+            /**
+             * Location to continue to.
+             */
+            location: Location;
+            targetCallFrames?: string | undefined;
+        }
+        interface PauseOnAsyncCallParameterType {
+            /**
+             * Debugger will pause when async call with given stack trace is started.
+             */
+            parentStackTraceId: Runtime.StackTraceId;
+        }
+        interface StepIntoParameterType {
+            /**
+             * Debugger will issue additional Debugger.paused notification if any async task is scheduled before next pause.
+             * @experimental
+             */
+            breakOnAsyncCall?: boolean | undefined;
+        }
+        interface GetStackTraceParameterType {
+            stackTraceId: Runtime.StackTraceId;
+        }
+        interface SearchInContentParameterType {
+            /**
+             * Id of the script to search in.
+             */
+            scriptId: Runtime.ScriptId;
+            /**
+             * String to search for.
+             */
+            query: string;
+            /**
+             * If true, search is case sensitive.
+             */
+            caseSensitive?: boolean | undefined;
+            /**
+             * If true, treats string parameter as regex.
+             */
+            isRegex?: boolean | undefined;
+        }
+        interface SetScriptSourceParameterType {
+            /**
+             * Id of the script to edit.
+             */
+            scriptId: Runtime.ScriptId;
+            /**
+             * New content of the script.
+             */
+            scriptSource: string;
+            /**
+             *  If true the change will not actually be applied. Dry run may be used to get result description without actually modifying the code.
+             */
+            dryRun?: boolean | undefined;
+        }
+        interface RestartFrameParameterType {
+            /**
+             * Call frame identifier to evaluate on.
+             */
+            callFrameId: CallFrameId;
+        }
+        interface GetScriptSourceParameterType {
+            /**
+             * Id of the script to get source for.
+             */
+            scriptId: Runtime.ScriptId;
+        }
+        interface SetPauseOnExceptionsParameterType {
+            /**
+             * Pause on exceptions mode.
+             */
+            state: string;
+        }
+        interface EvaluateOnCallFrameParameterType {
+            /**
+             * Call frame identifier to evaluate on.
+             */
+            callFrameId: CallFrameId;
+            /**
+             * Expression to evaluate.
+             */
+            expression: string;
+            /**
+             * String object group name to put result into (allows rapid releasing resulting object handles using <code>releaseObjectGroup</code>).
+             */
+            objectGroup?: string | undefined;
+            /**
+             * Specifies whether command line API should be available to the evaluated expression, defaults to false.
+             */
+            includeCommandLineAPI?: boolean | undefined;
+            /**
+             * In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides <code>setPauseOnException</code> state.
+             */
+            silent?: boolean | undefined;
+            /**
+             * Whether the result is expected to be a JSON object that should be sent by value.
+             */
+            returnByValue?: boolean | undefined;
+            /**
+             * Whether preview should be generated for the result.
+             * @experimental
+             */
+            generatePreview?: boolean | undefined;
+            /**
+             * Whether to throw an exception if side effect cannot be ruled out during evaluation.
+             */
+            throwOnSideEffect?: boolean | undefined;
+        }
+        interface SetVariableValueParameterType {
+            /**
+             * 0-based number of scope as was listed in scope chain. Only 'local', 'closure' and 'catch' scope types are allowed. Other scopes could be manipulated manually.
+             */
+            scopeNumber: number;
+            /**
+             * Variable name.
+             */
+            variableName: string;
+            /**
+             * New variable value.
+             */
+            newValue: Runtime.CallArgument;
+            /**
+             * Id of callframe that holds variable.
+             */
+            callFrameId: CallFrameId;
+        }
+        interface SetReturnValueParameterType {
+            /**
+             * New return value.
+             */
+            newValue: Runtime.CallArgument;
+        }
+        interface SetAsyncCallStackDepthParameterType {
+            /**
+             * Maximum depth of async call stacks. Setting to <code>0</code> will effectively disable collecting async call stacks (default).
+             */
+            maxDepth: number;
+        }
+        interface SetBlackboxPatternsParameterType {
+            /**
+             * Array of regexps that will be used to check script url for blackbox state.
+             */
+            patterns: string[];
+        }
+        interface SetBlackboxedRangesParameterType {
+            /**
+             * Id of the script.
+             */
+            scriptId: Runtime.ScriptId;
+            positions: ScriptPosition[];
+        }
+        interface EnableReturnType {
+            /**
+             * Unique identifier of the debugger.
+             * @experimental
+             */
+            debuggerId: Runtime.UniqueDebuggerId;
+        }
+        interface SetBreakpointByUrlReturnType {
+            /**
+             * Id of the created breakpoint for further reference.
+             */
+            breakpointId: BreakpointId;
+            /**
+             * List of the locations this breakpoint resolved into upon addition.
+             */
+            locations: Location[];
+        }
+        interface SetBreakpointReturnType {
+            /**
+             * Id of the created breakpoint for further reference.
+             */
+            breakpointId: BreakpointId;
+            /**
+             * Location this breakpoint resolved into.
+             */
+            actualLocation: Location;
+        }
+        interface GetPossibleBreakpointsReturnType {
+            /**
+             * List of the possible breakpoint locations.
+             */
+            locations: BreakLocation[];
+        }
+        interface GetStackTraceReturnType {
+            stackTrace: Runtime.StackTrace;
+        }
+        interface SearchInContentReturnType {
+            /**
+             * List of search matches.
+             */
+            result: SearchMatch[];
+        }
+        interface SetScriptSourceReturnType {
+            /**
+             * New stack trace in case editing has happened while VM was stopped.
+             */
+            callFrames?: CallFrame[] | undefined;
+            /**
+             * Whether current call stack  was modified after applying the changes.
+             */
+            stackChanged?: boolean | undefined;
+            /**
+             * Async stack trace, if any.
+             */
+            asyncStackTrace?: Runtime.StackTrace | undefined;
+            /**
+             * Async stack trace, if any.
+             * @experimental
+             */
+            asyncStackTraceId?: Runtime.StackTraceId | undefined;
+            /**
+             * Exception details if any.
+             */
+            exceptionDetails?: Runtime.ExceptionDetails | undefined;
+        }
+        interface RestartFrameReturnType {
+            /**
+             * New stack trace.
+             */
+            callFrames: CallFrame[];
+            /**
+             * Async stack trace, if any.
+             */
+            asyncStackTrace?: Runtime.StackTrace | undefined;
+            /**
+             * Async stack trace, if any.
+             * @experimental
+             */
+            asyncStackTraceId?: Runtime.StackTraceId | undefined;
+        }
+        interface GetScriptSourceReturnType {
+            /**
+             * Script source.
+             */
+            scriptSource: string;
+        }
+        interface EvaluateOnCallFrameReturnType {
+            /**
+             * Object wrapper for the evaluation result.
+             */
+            result: Runtime.RemoteObject;
+            /**
+             * Exception details.
+             */
+            exceptionDetails?: Runtime.ExceptionDetails | undefined;
+        }
+        interface ScriptParsedEventDataType {
+            /**
+             * Identifier of the script parsed.
+             */
+            scriptId: Runtime.ScriptId;
+            /**
+             * URL or name of the script parsed (if any).
+             */
+            url: string;
+            /**
+             * Line offset of the script within the resource with given URL (for script tags).
+             */
+            startLine: number;
+            /**
+             * Column offset of the script within the resource with given URL.
+             */
+            startColumn: number;
+            /**
+             * Last line of the script.
+             */
+            endLine: number;
+            /**
+             * Length of the last line of the script.
+             */
+            endColumn: number;
+            /**
+             * Specifies script creation context.
+             */
+            executionContextId: Runtime.ExecutionContextId;
+            /**
+             * Content hash of the script.
+             */
+            hash: string;
+            /**
+             * Embedder-specific auxiliary data.
+             */
+            executionContextAuxData?: {} | undefined;
+            /**
+             * True, if this script is generated as a result of the live edit operation.
+             * @experimental
+             */
+            isLiveEdit?: boolean | undefined;
+            /**
+             * URL of source map associated with script (if any).
+             */
+            sourceMapURL?: string | undefined;
+            /**
+             * True, if this script has sourceURL.
+             */
+            hasSourceURL?: boolean | undefined;
+            /**
+             * True, if this script is ES6 module.
+             */
+            isModule?: boolean | undefined;
+            /**
+             * This script length.
+             */
+            length?: number | undefined;
+            /**
+             * JavaScript top stack frame of where the script parsed event was triggered if available.
+             * @experimental
+             */
+            stackTrace?: Runtime.StackTrace | undefined;
+        }
+        interface ScriptFailedToParseEventDataType {
+            /**
+             * Identifier of the script parsed.
+             */
+            scriptId: Runtime.ScriptId;
+            /**
+             * URL or name of the script parsed (if any).
+             */
+            url: string;
+            /**
+             * Line offset of the script within the resource with given URL (for script tags).
+             */
+            startLine: number;
+            /**
+             * Column offset of the script within the resource with given URL.
+             */
+            startColumn: number;
+            /**
+             * Last line of the script.
+             */
+            endLine: number;
+            /**
+             * Length of the last line of the script.
+             */
+            endColumn: number;
+            /**
+             * Specifies script creation context.
+             */
+            executionContextId: Runtime.ExecutionContextId;
+            /**
+             * Content hash of the script.
+             */
+            hash: string;
+            /**
+             * Embedder-specific auxiliary data.
+             */
+            executionContextAuxData?: {} | undefined;
+            /**
+             * URL of source map associated with script (if any).
+             */
+            sourceMapURL?: string | undefined;
+            /**
+             * True, if this script has sourceURL.
+             */
+            hasSourceURL?: boolean | undefined;
+            /**
+             * True, if this script is ES6 module.
+             */
+            isModule?: boolean | undefined;
+            /**
+             * This script length.
+             */
+            length?: number | undefined;
+            /**
+             * JavaScript top stack frame of where the script parsed event was triggered if available.
+             * @experimental
+             */
+            stackTrace?: Runtime.StackTrace | undefined;
+        }
+        interface BreakpointResolvedEventDataType {
+            /**
+             * Breakpoint unique identifier.
+             */
+            breakpointId: BreakpointId;
+            /**
+             * Actual breakpoint location.
+             */
+            location: Location;
+        }
+        interface PausedEventDataType {
+            /**
+             * Call stack the virtual machine stopped on.
+             */
+            callFrames: CallFrame[];
+            /**
+             * Pause reason.
+             */
+            reason: string;
+            /**
+             * Object containing break-specific auxiliary properties.
+             */
+            data?: {} | undefined;
+            /**
+             * Hit breakpoints IDs
+             */
+            hitBreakpoints?: string[] | undefined;
+            /**
+             * Async stack trace, if any.
+             */
+            asyncStackTrace?: Runtime.StackTrace | undefined;
+            /**
+             * Async stack trace, if any.
+             * @experimental
+             */
+            asyncStackTraceId?: Runtime.StackTraceId | undefined;
+            /**
+             * Just scheduled async call will have this stack trace as parent stack during async execution. This field is available only after <code>Debugger.stepInto</code> call with <code>breakOnAsynCall</code> flag.
+             * @experimental
+             */
+            asyncCallStackTraceId?: Runtime.StackTraceId | undefined;
+        }
+    }
+    namespace Console {
+        /**
+         * Console message.
+         */
+        interface ConsoleMessage {
+            /**
+             * Message source.
+             */
+            source: string;
+            /**
+             * Message severity.
+             */
+            level: string;
+            /**
+             * Message text.
+             */
+            text: string;
+            /**
+             * URL of the message origin.
+             */
+            url?: string | undefined;
+            /**
+             * Line number in the resource that generated this message (1-based).
+             */
+            line?: number | undefined;
+            /**
+             * Column number in the resource that generated this message (1-based).
+             */
+            column?: number | undefined;
+        }
+        interface MessageAddedEventDataType {
+            /**
+             * Console message that has been added.
+             */
+            message: ConsoleMessage;
+        }
+    }
+    namespace Profiler {
+        /**
+         * Profile node. Holds callsite information, execution statistics and child nodes.
+         */
+        interface ProfileNode {
+            /**
+             * Unique id of the node.
+             */
+            id: number;
+            /**
+             * Function location.
+             */
+            callFrame: Runtime.CallFrame;
+            /**
+             * Number of samples where this node was on top of the call stack.
+             */
+            hitCount?: number | undefined;
+            /**
+             * Child node ids.
+             */
+            children?: number[] | undefined;
+            /**
+             * The reason of being not optimized. The function may be deoptimized or marked as don't optimize.
+             */
+            deoptReason?: string | undefined;
+            /**
+             * An array of source position ticks.
+             */
+            positionTicks?: PositionTickInfo[] | undefined;
+        }
+        /**
+         * Profile.
+         */
+        interface Profile {
+            /**
+             * The list of profile nodes. First item is the root node.
+             */
+            nodes: ProfileNode[];
+            /**
+             * Profiling start timestamp in microseconds.
+             */
+            startTime: number;
+            /**
+             * Profiling end timestamp in microseconds.
+             */
+            endTime: number;
+            /**
+             * Ids of samples top nodes.
+             */
+            samples?: number[] | undefined;
+            /**
+             * Time intervals between adjacent samples in microseconds. The first delta is relative to the profile startTime.
+             */
+            timeDeltas?: number[] | undefined;
+        }
+        /**
+         * Specifies a number of samples attributed to a certain source position.
+         */
+        interface PositionTickInfo {
+            /**
+             * Source line number (1-based).
+             */
+            line: number;
+            /**
+             * Number of samples attributed to the source line.
+             */
+            ticks: number;
+        }
+        /**
+         * Coverage data for a source range.
+         */
+        interface CoverageRange {
+            /**
+             * JavaScript script source offset for the range start.
+             */
+            startOffset: number;
+            /**
+             * JavaScript script source offset for the range end.
+             */
+            endOffset: number;
+            /**
+             * Collected execution count of the source range.
+             */
+            count: number;
+        }
+        /**
+         * Coverage data for a JavaScript function.
+         */
+        interface FunctionCoverage {
+            /**
+             * JavaScript function name.
+             */
+            functionName: string;
+            /**
+             * Source ranges inside the function with coverage data.
+             */
+            ranges: CoverageRange[];
+            /**
+             * Whether coverage data for this function has block granularity.
+             */
+            isBlockCoverage: boolean;
+        }
+        /**
+         * Coverage data for a JavaScript script.
+         */
+        interface ScriptCoverage {
+            /**
+             * JavaScript script id.
+             */
+            scriptId: Runtime.ScriptId;
+            /**
+             * JavaScript script name or url.
+             */
+            url: string;
+            /**
+             * Functions contained in the script that has coverage data.
+             */
+            functions: FunctionCoverage[];
+        }
+        /**
+         * Describes a type collected during runtime.
+         * @experimental
+         */
+        interface TypeObject {
+            /**
+             * Name of a type collected with type profiling.
+             */
+            name: string;
+        }
+        /**
+         * Source offset and types for a parameter or return value.
+         * @experimental
+         */
+        interface TypeProfileEntry {
+            /**
+             * Source offset of the parameter or end of function for return values.
+             */
+            offset: number;
+            /**
+             * The types for this parameter or return value.
+             */
+            types: TypeObject[];
+        }
+        /**
+         * Type profile data collected during runtime for a JavaScript script.
+         * @experimental
+         */
+        interface ScriptTypeProfile {
+            /**
+             * JavaScript script id.
+             */
+            scriptId: Runtime.ScriptId;
+            /**
+             * JavaScript script name or url.
+             */
+            url: string;
+            /**
+             * Type profile entries for parameters and return values of the functions in the script.
+             */
+            entries: TypeProfileEntry[];
+        }
+        interface SetSamplingIntervalParameterType {
+            /**
+             * New sampling interval in microseconds.
+             */
+            interval: number;
+        }
+        interface StartPreciseCoverageParameterType {
+            /**
+             * Collect accurate call counts beyond simple 'covered' or 'not covered'.
+             */
+            callCount?: boolean | undefined;
+            /**
+             * Collect block-based coverage.
+             */
+            detailed?: boolean | undefined;
+        }
+        interface StopReturnType {
+            /**
+             * Recorded profile.
+             */
+            profile: Profile;
+        }
+        interface TakePreciseCoverageReturnType {
+            /**
+             * Coverage data for the current isolate.
+             */
+            result: ScriptCoverage[];
+        }
+        interface GetBestEffortCoverageReturnType {
+            /**
+             * Coverage data for the current isolate.
+             */
+            result: ScriptCoverage[];
+        }
+        interface TakeTypeProfileReturnType {
+            /**
+             * Type profile for all scripts since startTypeProfile() was turned on.
+             */
+            result: ScriptTypeProfile[];
+        }
+        interface ConsoleProfileStartedEventDataType {
+            id: string;
+            /**
+             * Location of console.profile().
+             */
+            location: Debugger.Location;
+            /**
+             * Profile title passed as an argument to console.profile().
+             */
+            title?: string | undefined;
+        }
+        interface ConsoleProfileFinishedEventDataType {
+            id: string;
+            /**
+             * Location of console.profileEnd().
+             */
+            location: Debugger.Location;
+            profile: Profile;
+            /**
+             * Profile title passed as an argument to console.profile().
+             */
+            title?: string | undefined;
+        }
+    }
+    namespace HeapProfiler {
+        /**
+         * Heap snapshot object id.
+         */
+        type HeapSnapshotObjectId = string;
+        /**
+         * Sampling Heap Profile node. Holds callsite information, allocation statistics and child nodes.
+         */
+        interface SamplingHeapProfileNode {
+            /**
+             * Function location.
+             */
+            callFrame: Runtime.CallFrame;
+            /**
+             * Allocations size in bytes for the node excluding children.
+             */
+            selfSize: number;
+            /**
+             * Child nodes.
+             */
+            children: SamplingHeapProfileNode[];
+        }
+        /**
+         * Profile.
+         */
+        interface SamplingHeapProfile {
+            head: SamplingHeapProfileNode;
+        }
+        interface StartTrackingHeapObjectsParameterType {
+            trackAllocations?: boolean | undefined;
+        }
+        interface StopTrackingHeapObjectsParameterType {
+            /**
+             * If true 'reportHeapSnapshotProgress' events will be generated while snapshot is being taken when the tracking is stopped.
+             */
+            reportProgress?: boolean | undefined;
+        }
+        interface TakeHeapSnapshotParameterType {
+            /**
+             * If true 'reportHeapSnapshotProgress' events will be generated while snapshot is being taken.
+             */
+            reportProgress?: boolean | undefined;
+        }
+        interface GetObjectByHeapObjectIdParameterType {
+            objectId: HeapSnapshotObjectId;
+            /**
+             * Symbolic group name that can be used to release multiple objects.
+             */
+            objectGroup?: string | undefined;
+        }
+        interface AddInspectedHeapObjectParameterType {
+            /**
+             * Heap snapshot object id to be accessible by means of $x command line API.
+             */
+            heapObjectId: HeapSnapshotObjectId;
+        }
+        interface GetHeapObjectIdParameterType {
+            /**
+             * Identifier of the object to get heap object id for.
+             */
+            objectId: Runtime.RemoteObjectId;
+        }
+        interface StartSamplingParameterType {
+            /**
+             * Average sample interval in bytes. Poisson distribution is used for the intervals. The default value is 32768 bytes.
+             */
+            samplingInterval?: number | undefined;
+        }
+        interface GetObjectByHeapObjectIdReturnType {
+            /**
+             * Evaluation result.
+             */
+            result: Runtime.RemoteObject;
+        }
+        interface GetHeapObjectIdReturnType {
+            /**
+             * Id of the heap snapshot object corresponding to the passed remote object id.
+             */
+            heapSnapshotObjectId: HeapSnapshotObjectId;
+        }
+        interface StopSamplingReturnType {
+            /**
+             * Recorded sampling heap profile.
+             */
+            profile: SamplingHeapProfile;
+        }
+        interface GetSamplingProfileReturnType {
+            /**
+             * Return the sampling profile being collected.
+             */
+            profile: SamplingHeapProfile;
+        }
+        interface AddHeapSnapshotChunkEventDataType {
+            chunk: string;
+        }
+        interface ReportHeapSnapshotProgressEventDataType {
+            done: number;
+            total: number;
+            finished?: boolean | undefined;
+        }
+        interface LastSeenObjectIdEventDataType {
+            lastSeenObjectId: number;
+            timestamp: number;
+        }
+        interface HeapStatsUpdateEventDataType {
+            /**
+             * An array of triplets. Each triplet describes a fragment. The first integer is the fragment index, the second integer is a total count of objects for the fragment, the third integer is a total size of the objects for the fragment.
+             */
+            statsUpdate: number[];
+        }
+    }
+    namespace NodeTracing {
+        interface TraceConfig {
+            /**
+             * Controls how the trace buffer stores data.
+             */
+            recordMode?: string | undefined;
+            /**
+             * Included category filters.
+             */
+            includedCategories: string[];
+        }
+        interface StartParameterType {
+            traceConfig: TraceConfig;
+        }
+        interface GetCategoriesReturnType {
+            /**
+             * A list of supported tracing categories.
+             */
+            categories: string[];
+        }
+        interface DataCollectedEventDataType {
+            value: Array<{}>;
+        }
+    }
+    namespace NodeWorker {
+        type WorkerID = string;
+        /**
+         * Unique identifier of attached debugging session.
+         */
+        type SessionID = string;
+        interface WorkerInfo {
+            workerId: WorkerID;
+            type: string;
+            title: string;
+            url: string;
+        }
+        interface SendMessageToWorkerParameterType {
+            message: string;
+            /**
+             * Identifier of the session.
+             */
+            sessionId: SessionID;
+        }
+        interface EnableParameterType {
+            /**
+             * Whether to new workers should be paused until the frontend sends `Runtime.runIfWaitingForDebugger`
+             * message to run them.
+             */
+            waitForDebuggerOnStart: boolean;
+        }
+        interface DetachParameterType {
+            sessionId: SessionID;
+        }
+        interface AttachedToWorkerEventDataType {
+            /**
+             * Identifier assigned to the session used to send/receive messages.
+             */
+            sessionId: SessionID;
+            workerInfo: WorkerInfo;
+            waitingForDebugger: boolean;
+        }
+        interface DetachedFromWorkerEventDataType {
+            /**
+             * Detached session identifier.
+             */
+            sessionId: SessionID;
+        }
+        interface ReceivedMessageFromWorkerEventDataType {
+            /**
+             * Identifier of a session which sends a message.
+             */
+            sessionId: SessionID;
+            message: string;
+        }
+    }
+    namespace NodeRuntime {
+        interface NotifyWhenWaitingForDisconnectParameterType {
+            enabled: boolean;
+        }
+    }
+    /**
+     * The `inspector.Session` is used for dispatching messages to the V8 inspector
+     * back-end and receiving message responses and notifications.
+     */
+    class Session extends EventEmitter {
+        /**
+         * Create a new instance of the inspector.Session class.
+         * The inspector session needs to be connected through session.connect() before the messages can be dispatched to the inspector backend.
+         */
+        constructor();
+        /**
+         * Connects a session to the inspector back-end.
+         * @since v8.0.0
+         */
+        connect(): void;
+        /**
+         * Immediately close the session. All pending message callbacks will be called
+         * with an error. `session.connect()` will need to be called to be able to send
+         * messages again. Reconnected session will lose all inspector state, such as
+         * enabled agents or configured breakpoints.
+         * @since v8.0.0
+         */
+        disconnect(): void;
+        /**
+         * Posts a message to the inspector back-end. `callback` will be notified when
+         * a response is received. `callback` is a function that accepts two optional
+         * arguments: error and message-specific result.
+         *
+         * ```js
+         * session.post('Runtime.evaluate', { expression: '2 + 2' },
+         *              (error, { result }) => console.log(result));
+         * // Output: { type: 'number', value: 4, description: '4' }
+         * ```
+         *
+         * The latest version of the V8 inspector protocol is published on the [Chrome DevTools Protocol Viewer](https://chromedevtools.github.io/devtools-protocol/v8/).
+         *
+         * Node.js inspector supports all the Chrome DevTools Protocol domains declared
+         * by V8\. Chrome DevTools Protocol domain provides an interface for interacting
+         * with one of the runtime agents used to inspect the application state and listen
+         * to the run-time events.
+         *
+         * ## Example usage
+         *
+         * Apart from the debugger, various V8 Profilers are available through the DevTools
+         * protocol.
+         * @since v8.0.0
+         */
+        post(method: string, params?: {}, callback?: (err: Error | null, params?: {}) => void): void;
+        post(method: string, callback?: (err: Error | null, params?: {}) => void): void;
+        /**
+         * Returns supported domains.
+         */
+        post(method: 'Schema.getDomains', callback?: (err: Error | null, params: Schema.GetDomainsReturnType) => void): void;
+        /**
+         * Evaluates expression on global object.
+         */
+        post(method: 'Runtime.evaluate', params?: Runtime.EvaluateParameterType, callback?: (err: Error | null, params: Runtime.EvaluateReturnType) => void): void;
+        post(method: 'Runtime.evaluate', callback?: (err: Error | null, params: Runtime.EvaluateReturnType) => void): void;
+        /**
+         * Add handler to promise with given promise object id.
+         */
+        post(method: 'Runtime.awaitPromise', params?: Runtime.AwaitPromiseParameterType, callback?: (err: Error | null, params: Runtime.AwaitPromiseReturnType) => void): void;
+        post(method: 'Runtime.awaitPromise', callback?: (err: Error | null, params: Runtime.AwaitPromiseReturnType) => void): void;
+        /**
+         * Calls function with given declaration on the given object. Object group of the result is inherited from the target object.
+         */
+        post(method: 'Runtime.callFunctionOn', params?: Runtime.CallFunctionOnParameterType, callback?: (err: Error | null, params: Runtime.CallFunctionOnReturnType) => void): void;
+        post(method: 'Runtime.callFunctionOn', callback?: (err: Error | null, params: Runtime.CallFunctionOnReturnType) => void): void;
+        /**
+         * Returns properties of a given object. Object group of the result is inherited from the target object.
+         */
+        post(method: 'Runtime.getProperties', params?: Runtime.GetPropertiesParameterType, callback?: (err: Error | null, params: Runtime.GetPropertiesReturnType) => void): void;
+        post(method: 'Runtime.getProperties', callback?: (err: Error | null, params: Runtime.GetPropertiesReturnType) => void): void;
+        /**
+         * Releases remote object with given id.
+         */
+        post(method: 'Runtime.releaseObject', params?: Runtime.ReleaseObjectParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Runtime.releaseObject', callback?: (err: Error | null) => void): void;
+        /**
+         * Releases all remote objects that belong to a given group.
+         */
+        post(method: 'Runtime.releaseObjectGroup', params?: Runtime.ReleaseObjectGroupParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Runtime.releaseObjectGroup', callback?: (err: Error | null) => void): void;
+        /**
+         * Tells inspected instance to run if it was waiting for debugger to attach.
+         */
+        post(method: 'Runtime.runIfWaitingForDebugger', callback?: (err: Error | null) => void): void;
+        /**
+         * Enables reporting of execution contexts creation by means of <code>executionContextCreated</code> event. When the reporting gets enabled the event will be sent immediately for each existing execution context.
+         */
+        post(method: 'Runtime.enable', callback?: (err: Error | null) => void): void;
+        /**
+         * Disables reporting of execution contexts creation.
+         */
+        post(method: 'Runtime.disable', callback?: (err: Error | null) => void): void;
+        /**
+         * Discards collected exceptions and console API calls.
+         */
+        post(method: 'Runtime.discardConsoleEntries', callback?: (err: Error | null) => void): void;
+        /**
+         * @experimental
+         */
+        post(method: 'Runtime.setCustomObjectFormatterEnabled', params?: Runtime.SetCustomObjectFormatterEnabledParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Runtime.setCustomObjectFormatterEnabled', callback?: (err: Error | null) => void): void;
+        /**
+         * Compiles expression.
+         */
+        post(method: 'Runtime.compileScript', params?: Runtime.CompileScriptParameterType, callback?: (err: Error | null, params: Runtime.CompileScriptReturnType) => void): void;
+        post(method: 'Runtime.compileScript', callback?: (err: Error | null, params: Runtime.CompileScriptReturnType) => void): void;
+        /**
+         * Runs script with given id in a given context.
+         */
+        post(method: 'Runtime.runScript', params?: Runtime.RunScriptParameterType, callback?: (err: Error | null, params: Runtime.RunScriptReturnType) => void): void;
+        post(method: 'Runtime.runScript', callback?: (err: Error | null, params: Runtime.RunScriptReturnType) => void): void;
+        post(method: 'Runtime.queryObjects', params?: Runtime.QueryObjectsParameterType, callback?: (err: Error | null, params: Runtime.QueryObjectsReturnType) => void): void;
+        post(method: 'Runtime.queryObjects', callback?: (err: Error | null, params: Runtime.QueryObjectsReturnType) => void): void;
+        /**
+         * Returns all let, const and class variables from global scope.
+         */
+        post(
+            method: 'Runtime.globalLexicalScopeNames',
+            params?: Runtime.GlobalLexicalScopeNamesParameterType,
+            callback?: (err: Error | null, params: Runtime.GlobalLexicalScopeNamesReturnType) => void
+        ): void;
+        post(method: 'Runtime.globalLexicalScopeNames', callback?: (err: Error | null, params: Runtime.GlobalLexicalScopeNamesReturnType) => void): void;
+        /**
+         * Enables debugger for the given page. Clients should not assume that the debugging has been enabled until the result for this command is received.
+         */
+        post(method: 'Debugger.enable', callback?: (err: Error | null, params: Debugger.EnableReturnType) => void): void;
+        /**
+         * Disables debugger for given page.
+         */
+        post(method: 'Debugger.disable', callback?: (err: Error | null) => void): void;
+        /**
+         * Activates / deactivates all breakpoints on the page.
+         */
+        post(method: 'Debugger.setBreakpointsActive', params?: Debugger.SetBreakpointsActiveParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.setBreakpointsActive', callback?: (err: Error | null) => void): void;
+        /**
+         * Makes page not interrupt on any pauses (breakpoint, exception, dom exception etc).
+         */
+        post(method: 'Debugger.setSkipAllPauses', params?: Debugger.SetSkipAllPausesParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.setSkipAllPauses', callback?: (err: Error | null) => void): void;
+        /**
+         * Sets JavaScript breakpoint at given location specified either by URL or URL regex. Once this command is issued, all existing parsed scripts will have breakpoints resolved and returned in <code>locations</code> property. Further matching script parsing will result in subsequent <code>breakpointResolved</code> events issued. This logical breakpoint will survive page reloads.
+         */
+        post(method: 'Debugger.setBreakpointByUrl', params?: Debugger.SetBreakpointByUrlParameterType, callback?: (err: Error | null, params: Debugger.SetBreakpointByUrlReturnType) => void): void;
+        post(method: 'Debugger.setBreakpointByUrl', callback?: (err: Error | null, params: Debugger.SetBreakpointByUrlReturnType) => void): void;
+        /**
+         * Sets JavaScript breakpoint at a given location.
+         */
+        post(method: 'Debugger.setBreakpoint', params?: Debugger.SetBreakpointParameterType, callback?: (err: Error | null, params: Debugger.SetBreakpointReturnType) => void): void;
+        post(method: 'Debugger.setBreakpoint', callback?: (err: Error | null, params: Debugger.SetBreakpointReturnType) => void): void;
+        /**
+         * Removes JavaScript breakpoint.
+         */
+        post(method: 'Debugger.removeBreakpoint', params?: Debugger.RemoveBreakpointParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.removeBreakpoint', callback?: (err: Error | null) => void): void;
+        /**
+         * Returns possible locations for breakpoint. scriptId in start and end range locations should be the same.
+         */
+        post(
+            method: 'Debugger.getPossibleBreakpoints',
+            params?: Debugger.GetPossibleBreakpointsParameterType,
+            callback?: (err: Error | null, params: Debugger.GetPossibleBreakpointsReturnType) => void
+        ): void;
+        post(method: 'Debugger.getPossibleBreakpoints', callback?: (err: Error | null, params: Debugger.GetPossibleBreakpointsReturnType) => void): void;
+        /**
+         * Continues execution until specific location is reached.
+         */
+        post(method: 'Debugger.continueToLocation', params?: Debugger.ContinueToLocationParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.continueToLocation', callback?: (err: Error | null) => void): void;
+        /**
+         * @experimental
+         */
+        post(method: 'Debugger.pauseOnAsyncCall', params?: Debugger.PauseOnAsyncCallParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.pauseOnAsyncCall', callback?: (err: Error | null) => void): void;
+        /**
+         * Steps over the statement.
+         */
+        post(method: 'Debugger.stepOver', callback?: (err: Error | null) => void): void;
+        /**
+         * Steps into the function call.
+         */
+        post(method: 'Debugger.stepInto', params?: Debugger.StepIntoParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.stepInto', callback?: (err: Error | null) => void): void;
+        /**
+         * Steps out of the function call.
+         */
+        post(method: 'Debugger.stepOut', callback?: (err: Error | null) => void): void;
+        /**
+         * Stops on the next JavaScript statement.
+         */
+        post(method: 'Debugger.pause', callback?: (err: Error | null) => void): void;
+        /**
+         * This method is deprecated - use Debugger.stepInto with breakOnAsyncCall and Debugger.pauseOnAsyncTask instead. Steps into next scheduled async task if any is scheduled before next pause. Returns success when async task is actually scheduled, returns error if no task were scheduled or another scheduleStepIntoAsync was called.
+         * @experimental
+         */
+        post(method: 'Debugger.scheduleStepIntoAsync', callback?: (err: Error | null) => void): void;
+        /**
+         * Resumes JavaScript execution.
+         */
+        post(method: 'Debugger.resume', callback?: (err: Error | null) => void): void;
+        /**
+         * Returns stack trace with given <code>stackTraceId</code>.
+         * @experimental
+         */
+        post(method: 'Debugger.getStackTrace', params?: Debugger.GetStackTraceParameterType, callback?: (err: Error | null, params: Debugger.GetStackTraceReturnType) => void): void;
+        post(method: 'Debugger.getStackTrace', callback?: (err: Error | null, params: Debugger.GetStackTraceReturnType) => void): void;
+        /**
+         * Searches for given string in script content.
+         */
+        post(method: 'Debugger.searchInContent', params?: Debugger.SearchInContentParameterType, callback?: (err: Error | null, params: Debugger.SearchInContentReturnType) => void): void;
+        post(method: 'Debugger.searchInContent', callback?: (err: Error | null, params: Debugger.SearchInContentReturnType) => void): void;
+        /**
+         * Edits JavaScript source live.
+         */
+        post(method: 'Debugger.setScriptSource', params?: Debugger.SetScriptSourceParameterType, callback?: (err: Error | null, params: Debugger.SetScriptSourceReturnType) => void): void;
+        post(method: 'Debugger.setScriptSource', callback?: (err: Error | null, params: Debugger.SetScriptSourceReturnType) => void): void;
+        /**
+         * Restarts particular call frame from the beginning.
+         */
+        post(method: 'Debugger.restartFrame', params?: Debugger.RestartFrameParameterType, callback?: (err: Error | null, params: Debugger.RestartFrameReturnType) => void): void;
+        post(method: 'Debugger.restartFrame', callback?: (err: Error | null, params: Debugger.RestartFrameReturnType) => void): void;
+        /**
+         * Returns source for the script with given id.
+         */
+        post(method: 'Debugger.getScriptSource', params?: Debugger.GetScriptSourceParameterType, callback?: (err: Error | null, params: Debugger.GetScriptSourceReturnType) => void): void;
+        post(method: 'Debugger.getScriptSource', callback?: (err: Error | null, params: Debugger.GetScriptSourceReturnType) => void): void;
+        /**
+         * Defines pause on exceptions state. Can be set to stop on all exceptions, uncaught exceptions or no exceptions. Initial pause on exceptions state is <code>none</code>.
+         */
+        post(method: 'Debugger.setPauseOnExceptions', params?: Debugger.SetPauseOnExceptionsParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.setPauseOnExceptions', callback?: (err: Error | null) => void): void;
+        /**
+         * Evaluates expression on a given call frame.
+         */
+        post(method: 'Debugger.evaluateOnCallFrame', params?: Debugger.EvaluateOnCallFrameParameterType, callback?: (err: Error | null, params: Debugger.EvaluateOnCallFrameReturnType) => void): void;
+        post(method: 'Debugger.evaluateOnCallFrame', callback?: (err: Error | null, params: Debugger.EvaluateOnCallFrameReturnType) => void): void;
+        /**
+         * Changes value of variable in a callframe. Object-based scopes are not supported and must be mutated manually.
+         */
+        post(method: 'Debugger.setVariableValue', params?: Debugger.SetVariableValueParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.setVariableValue', callback?: (err: Error | null) => void): void;
+        /**
+         * Changes return value in top frame. Available only at return break position.
+         * @experimental
+         */
+        post(method: 'Debugger.setReturnValue', params?: Debugger.SetReturnValueParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.setReturnValue', callback?: (err: Error | null) => void): void;
+        /**
+         * Enables or disables async call stacks tracking.
+         */
+        post(method: 'Debugger.setAsyncCallStackDepth', params?: Debugger.SetAsyncCallStackDepthParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.setAsyncCallStackDepth', callback?: (err: Error | null) => void): void;
+        /**
+         * Replace previous blackbox patterns with passed ones. Forces backend to skip stepping/pausing in scripts with url matching one of the patterns. VM will try to leave blackboxed script by performing 'step in' several times, finally resorting to 'step out' if unsuccessful.
+         * @experimental
+         */
+        post(method: 'Debugger.setBlackboxPatterns', params?: Debugger.SetBlackboxPatternsParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.setBlackboxPatterns', callback?: (err: Error | null) => void): void;
+        /**
+         * Makes backend skip steps in the script in blackboxed ranges. VM will try leave blacklisted scripts by performing 'step in' several times, finally resorting to 'step out' if unsuccessful. Positions array contains positions where blackbox state is changed. First interval isn't blackboxed. Array should be sorted.
+         * @experimental
+         */
+        post(method: 'Debugger.setBlackboxedRanges', params?: Debugger.SetBlackboxedRangesParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.setBlackboxedRanges', callback?: (err: Error | null) => void): void;
+        /**
+         * Enables console domain, sends the messages collected so far to the client by means of the <code>messageAdded</code> notification.
+         */
+        post(method: 'Console.enable', callback?: (err: Error | null) => void): void;
+        /**
+         * Disables console domain, prevents further console messages from being reported to the client.
+         */
+        post(method: 'Console.disable', callback?: (err: Error | null) => void): void;
+        /**
+         * Does nothing.
+         */
+        post(method: 'Console.clearMessages', callback?: (err: Error | null) => void): void;
+        post(method: 'Profiler.enable', callback?: (err: Error | null) => void): void;
+        post(method: 'Profiler.disable', callback?: (err: Error | null) => void): void;
+        /**
+         * Changes CPU profiler sampling interval. Must be called before CPU profiles recording started.
+         */
+        post(method: 'Profiler.setSamplingInterval', params?: Profiler.SetSamplingIntervalParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Profiler.setSamplingInterval', callback?: (err: Error | null) => void): void;
+        post(method: 'Profiler.start', callback?: (err: Error | null) => void): void;
+        post(method: 'Profiler.stop', callback?: (err: Error | null, params: Profiler.StopReturnType) => void): void;
+        /**
+         * Enable precise code coverage. Coverage data for JavaScript executed before enabling precise code coverage may be incomplete. Enabling prevents running optimized code and resets execution counters.
+         */
+        post(method: 'Profiler.startPreciseCoverage', params?: Profiler.StartPreciseCoverageParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Profiler.startPreciseCoverage', callback?: (err: Error | null) => void): void;
+        /**
+         * Disable precise code coverage. Disabling releases unnecessary execution count records and allows executing optimized code.
+         */
+        post(method: 'Profiler.stopPreciseCoverage', callback?: (err: Error | null) => void): void;
+        /**
+         * Collect coverage data for the current isolate, and resets execution counters. Precise code coverage needs to have started.
+         */
+        post(method: 'Profiler.takePreciseCoverage', callback?: (err: Error | null, params: Profiler.TakePreciseCoverageReturnType) => void): void;
+        /**
+         * Collect coverage data for the current isolate. The coverage data may be incomplete due to garbage collection.
+         */
+        post(method: 'Profiler.getBestEffortCoverage', callback?: (err: Error | null, params: Profiler.GetBestEffortCoverageReturnType) => void): void;
+        /**
+         * Enable type profile.
+         * @experimental
+         */
+        post(method: 'Profiler.startTypeProfile', callback?: (err: Error | null) => void): void;
+        /**
+         * Disable type profile. Disabling releases type profile data collected so far.
+         * @experimental
+         */
+        post(method: 'Profiler.stopTypeProfile', callback?: (err: Error | null) => void): void;
+        /**
+         * Collect type profile.
+         * @experimental
+         */
+        post(method: 'Profiler.takeTypeProfile', callback?: (err: Error | null, params: Profiler.TakeTypeProfileReturnType) => void): void;
+        post(method: 'HeapProfiler.enable', callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.disable', callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.startTrackingHeapObjects', params?: HeapProfiler.StartTrackingHeapObjectsParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.startTrackingHeapObjects', callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.stopTrackingHeapObjects', params?: HeapProfiler.StopTrackingHeapObjectsParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.stopTrackingHeapObjects', callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.takeHeapSnapshot', params?: HeapProfiler.TakeHeapSnapshotParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.takeHeapSnapshot', callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.collectGarbage', callback?: (err: Error | null) => void): void;
+        post(
+            method: 'HeapProfiler.getObjectByHeapObjectId',
+            params?: HeapProfiler.GetObjectByHeapObjectIdParameterType,
+            callback?: (err: Error | null, params: HeapProfiler.GetObjectByHeapObjectIdReturnType) => void
+        ): void;
+        post(method: 'HeapProfiler.getObjectByHeapObjectId', callback?: (err: Error | null, params: HeapProfiler.GetObjectByHeapObjectIdReturnType) => void): void;
+        /**
+         * Enables console to refer to the node with given id via $x (see Command Line API for more details $x functions).
+         */
+        post(method: 'HeapProfiler.addInspectedHeapObject', params?: HeapProfiler.AddInspectedHeapObjectParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.addInspectedHeapObject', callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.getHeapObjectId', params?: HeapProfiler.GetHeapObjectIdParameterType, callback?: (err: Error | null, params: HeapProfiler.GetHeapObjectIdReturnType) => void): void;
+        post(method: 'HeapProfiler.getHeapObjectId', callback?: (err: Error | null, params: HeapProfiler.GetHeapObjectIdReturnType) => void): void;
+        post(method: 'HeapProfiler.startSampling', params?: HeapProfiler.StartSamplingParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.startSampling', callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.stopSampling', callback?: (err: Error | null, params: HeapProfiler.StopSamplingReturnType) => void): void;
+        post(method: 'HeapProfiler.getSamplingProfile', callback?: (err: Error | null, params: HeapProfiler.GetSamplingProfileReturnType) => void): void;
+        /**
+         * Gets supported tracing categories.
+         */
+        post(method: 'NodeTracing.getCategories', callback?: (err: Error | null, params: NodeTracing.GetCategoriesReturnType) => void): void;
+        /**
+         * Start trace events collection.
+         */
+        post(method: 'NodeTracing.start', params?: NodeTracing.StartParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'NodeTracing.start', callback?: (err: Error | null) => void): void;
+        /**
+         * Stop trace events collection. Remaining collected events will be sent as a sequence of
+         * dataCollected events followed by tracingComplete event.
+         */
+        post(method: 'NodeTracing.stop', callback?: (err: Error | null) => void): void;
+        /**
+         * Sends protocol message over session with given id.
+         */
+        post(method: 'NodeWorker.sendMessageToWorker', params?: NodeWorker.SendMessageToWorkerParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'NodeWorker.sendMessageToWorker', callback?: (err: Error | null) => void): void;
+        /**
+         * Instructs the inspector to attach to running workers. Will also attach to new workers
+         * as they start
+         */
+        post(method: 'NodeWorker.enable', params?: NodeWorker.EnableParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'NodeWorker.enable', callback?: (err: Error | null) => void): void;
+        /**
+         * Detaches from all running workers and disables attaching to new workers as they are started.
+         */
+        post(method: 'NodeWorker.disable', callback?: (err: Error | null) => void): void;
+        /**
+         * Detached from the worker with given sessionId.
+         */
+        post(method: 'NodeWorker.detach', params?: NodeWorker.DetachParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'NodeWorker.detach', callback?: (err: Error | null) => void): void;
+        /**
+         * Enable the `NodeRuntime.waitingForDisconnect`.
+         */
+        post(method: 'NodeRuntime.notifyWhenWaitingForDisconnect', params?: NodeRuntime.NotifyWhenWaitingForDisconnectParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'NodeRuntime.notifyWhenWaitingForDisconnect', callback?: (err: Error | null) => void): void;
+        // Events
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        /**
+         * Emitted when any notification from the V8 Inspector is received.
+         */
+        addListener(event: 'inspectorNotification', listener: (message: InspectorNotification<{}>) => void): this;
+        /**
+         * Issued when new execution context is created.
+         */
+        addListener(event: 'Runtime.executionContextCreated', listener: (message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>) => void): this;
+        /**
+         * Issued when execution context is destroyed.
+         */
+        addListener(event: 'Runtime.executionContextDestroyed', listener: (message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>) => void): this;
+        /**
+         * Issued when all executionContexts were cleared in browser
+         */
+        addListener(event: 'Runtime.executionContextsCleared', listener: () => void): this;
+        /**
+         * Issued when exception was thrown and unhandled.
+         */
+        addListener(event: 'Runtime.exceptionThrown', listener: (message: InspectorNotification<Runtime.ExceptionThrownEventDataType>) => void): this;
+        /**
+         * Issued when unhandled exception was revoked.
+         */
+        addListener(event: 'Runtime.exceptionRevoked', listener: (message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>) => void): this;
+        /**
+         * Issued when console API was called.
+         */
+        addListener(event: 'Runtime.consoleAPICalled', listener: (message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>) => void): this;
+        /**
+         * Issued when object should be inspected (for example, as a result of inspect() command line API call).
+         */
+        addListener(event: 'Runtime.inspectRequested', listener: (message: InspectorNotification<Runtime.InspectRequestedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine parses script. This event is also fired for all known and uncollected scripts upon enabling debugger.
+         */
+        addListener(event: 'Debugger.scriptParsed', listener: (message: InspectorNotification<Debugger.ScriptParsedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine fails to parse the script.
+         */
+        addListener(event: 'Debugger.scriptFailedToParse', listener: (message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>) => void): this;
+        /**
+         * Fired when breakpoint is resolved to an actual script and location.
+         */
+        addListener(event: 'Debugger.breakpointResolved', listener: (message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria.
+         */
+        addListener(event: 'Debugger.paused', listener: (message: InspectorNotification<Debugger.PausedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine resumed execution.
+         */
+        addListener(event: 'Debugger.resumed', listener: () => void): this;
+        /**
+         * Issued when new console message is added.
+         */
+        addListener(event: 'Console.messageAdded', listener: (message: InspectorNotification<Console.MessageAddedEventDataType>) => void): this;
+        /**
+         * Sent when new profile recording is started using console.profile() call.
+         */
+        addListener(event: 'Profiler.consoleProfileStarted', listener: (message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>) => void): this;
+        addListener(event: 'Profiler.consoleProfileFinished', listener: (message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>) => void): this;
+        addListener(event: 'HeapProfiler.addHeapSnapshotChunk', listener: (message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>) => void): this;
+        addListener(event: 'HeapProfiler.resetProfiles', listener: () => void): this;
+        addListener(event: 'HeapProfiler.reportHeapSnapshotProgress', listener: (message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend regularly sends a current value for last seen object id and corresponding timestamp. If the were changes in the heap since last event then one or more heapStatsUpdate events will be sent before a new lastSeenObjectId event.
+         */
+        addListener(event: 'HeapProfiler.lastSeenObjectId', listener: (message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend may send update for one or more fragments
+         */
+        addListener(event: 'HeapProfiler.heapStatsUpdate', listener: (message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>) => void): this;
+        /**
+         * Contains an bucket of collected trace events.
+         */
+        addListener(event: 'NodeTracing.dataCollected', listener: (message: InspectorNotification<NodeTracing.DataCollectedEventDataType>) => void): this;
+        /**
+         * Signals that tracing is stopped and there is no trace buffers pending flush, all data were
+         * delivered via dataCollected events.
+         */
+        addListener(event: 'NodeTracing.tracingComplete', listener: () => void): this;
+        /**
+         * Issued when attached to a worker.
+         */
+        addListener(event: 'NodeWorker.attachedToWorker', listener: (message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>) => void): this;
+        /**
+         * Issued when detached from the worker.
+         */
+        addListener(event: 'NodeWorker.detachedFromWorker', listener: (message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>) => void): this;
+        /**
+         * Notifies about a new protocol message received from the session
+         * (session ID is provided in attachedToWorker notification).
+         */
+        addListener(event: 'NodeWorker.receivedMessageFromWorker', listener: (message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>) => void): this;
+        /**
+         * This event is fired instead of `Runtime.executionContextDestroyed` when
+         * enabled.
+         * It is fired when the Node process finished all code execution and is
+         * waiting for all frontends to disconnect.
+         */
+        addListener(event: 'NodeRuntime.waitingForDisconnect', listener: () => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'inspectorNotification', message: InspectorNotification<{}>): boolean;
+        emit(event: 'Runtime.executionContextCreated', message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>): boolean;
+        emit(event: 'Runtime.executionContextDestroyed', message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>): boolean;
+        emit(event: 'Runtime.executionContextsCleared'): boolean;
+        emit(event: 'Runtime.exceptionThrown', message: InspectorNotification<Runtime.ExceptionThrownEventDataType>): boolean;
+        emit(event: 'Runtime.exceptionRevoked', message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>): boolean;
+        emit(event: 'Runtime.consoleAPICalled', message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>): boolean;
+        emit(event: 'Runtime.inspectRequested', message: InspectorNotification<Runtime.InspectRequestedEventDataType>): boolean;
+        emit(event: 'Debugger.scriptParsed', message: InspectorNotification<Debugger.ScriptParsedEventDataType>): boolean;
+        emit(event: 'Debugger.scriptFailedToParse', message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>): boolean;
+        emit(event: 'Debugger.breakpointResolved', message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>): boolean;
+        emit(event: 'Debugger.paused', message: InspectorNotification<Debugger.PausedEventDataType>): boolean;
+        emit(event: 'Debugger.resumed'): boolean;
+        emit(event: 'Console.messageAdded', message: InspectorNotification<Console.MessageAddedEventDataType>): boolean;
+        emit(event: 'Profiler.consoleProfileStarted', message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>): boolean;
+        emit(event: 'Profiler.consoleProfileFinished', message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>): boolean;
+        emit(event: 'HeapProfiler.addHeapSnapshotChunk', message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>): boolean;
+        emit(event: 'HeapProfiler.resetProfiles'): boolean;
+        emit(event: 'HeapProfiler.reportHeapSnapshotProgress', message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>): boolean;
+        emit(event: 'HeapProfiler.lastSeenObjectId', message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>): boolean;
+        emit(event: 'HeapProfiler.heapStatsUpdate', message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>): boolean;
+        emit(event: 'NodeTracing.dataCollected', message: InspectorNotification<NodeTracing.DataCollectedEventDataType>): boolean;
+        emit(event: 'NodeTracing.tracingComplete'): boolean;
+        emit(event: 'NodeWorker.attachedToWorker', message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>): boolean;
+        emit(event: 'NodeWorker.detachedFromWorker', message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>): boolean;
+        emit(event: 'NodeWorker.receivedMessageFromWorker', message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>): boolean;
+        emit(event: 'NodeRuntime.waitingForDisconnect'): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        /**
+         * Emitted when any notification from the V8 Inspector is received.
+         */
+        on(event: 'inspectorNotification', listener: (message: InspectorNotification<{}>) => void): this;
+        /**
+         * Issued when new execution context is created.
+         */
+        on(event: 'Runtime.executionContextCreated', listener: (message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>) => void): this;
+        /**
+         * Issued when execution context is destroyed.
+         */
+        on(event: 'Runtime.executionContextDestroyed', listener: (message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>) => void): this;
+        /**
+         * Issued when all executionContexts were cleared in browser
+         */
+        on(event: 'Runtime.executionContextsCleared', listener: () => void): this;
+        /**
+         * Issued when exception was thrown and unhandled.
+         */
+        on(event: 'Runtime.exceptionThrown', listener: (message: InspectorNotification<Runtime.ExceptionThrownEventDataType>) => void): this;
+        /**
+         * Issued when unhandled exception was revoked.
+         */
+        on(event: 'Runtime.exceptionRevoked', listener: (message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>) => void): this;
+        /**
+         * Issued when console API was called.
+         */
+        on(event: 'Runtime.consoleAPICalled', listener: (message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>) => void): this;
+        /**
+         * Issued when object should be inspected (for example, as a result of inspect() command line API call).
+         */
+        on(event: 'Runtime.inspectRequested', listener: (message: InspectorNotification<Runtime.InspectRequestedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine parses script. This event is also fired for all known and uncollected scripts upon enabling debugger.
+         */
+        on(event: 'Debugger.scriptParsed', listener: (message: InspectorNotification<Debugger.ScriptParsedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine fails to parse the script.
+         */
+        on(event: 'Debugger.scriptFailedToParse', listener: (message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>) => void): this;
+        /**
+         * Fired when breakpoint is resolved to an actual script and location.
+         */
+        on(event: 'Debugger.breakpointResolved', listener: (message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria.
+         */
+        on(event: 'Debugger.paused', listener: (message: InspectorNotification<Debugger.PausedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine resumed execution.
+         */
+        on(event: 'Debugger.resumed', listener: () => void): this;
+        /**
+         * Issued when new console message is added.
+         */
+        on(event: 'Console.messageAdded', listener: (message: InspectorNotification<Console.MessageAddedEventDataType>) => void): this;
+        /**
+         * Sent when new profile recording is started using console.profile() call.
+         */
+        on(event: 'Profiler.consoleProfileStarted', listener: (message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>) => void): this;
+        on(event: 'Profiler.consoleProfileFinished', listener: (message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>) => void): this;
+        on(event: 'HeapProfiler.addHeapSnapshotChunk', listener: (message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>) => void): this;
+        on(event: 'HeapProfiler.resetProfiles', listener: () => void): this;
+        on(event: 'HeapProfiler.reportHeapSnapshotProgress', listener: (message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend regularly sends a current value for last seen object id and corresponding timestamp. If the were changes in the heap since last event then one or more heapStatsUpdate events will be sent before a new lastSeenObjectId event.
+         */
+        on(event: 'HeapProfiler.lastSeenObjectId', listener: (message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend may send update for one or more fragments
+         */
+        on(event: 'HeapProfiler.heapStatsUpdate', listener: (message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>) => void): this;
+        /**
+         * Contains an bucket of collected trace events.
+         */
+        on(event: 'NodeTracing.dataCollected', listener: (message: InspectorNotification<NodeTracing.DataCollectedEventDataType>) => void): this;
+        /**
+         * Signals that tracing is stopped and there is no trace buffers pending flush, all data were
+         * delivered via dataCollected events.
+         */
+        on(event: 'NodeTracing.tracingComplete', listener: () => void): this;
+        /**
+         * Issued when attached to a worker.
+         */
+        on(event: 'NodeWorker.attachedToWorker', listener: (message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>) => void): this;
+        /**
+         * Issued when detached from the worker.
+         */
+        on(event: 'NodeWorker.detachedFromWorker', listener: (message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>) => void): this;
+        /**
+         * Notifies about a new protocol message received from the session
+         * (session ID is provided in attachedToWorker notification).
+         */
+        on(event: 'NodeWorker.receivedMessageFromWorker', listener: (message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>) => void): this;
+        /**
+         * This event is fired instead of `Runtime.executionContextDestroyed` when
+         * enabled.
+         * It is fired when the Node process finished all code execution and is
+         * waiting for all frontends to disconnect.
+         */
+        on(event: 'NodeRuntime.waitingForDisconnect', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        /**
+         * Emitted when any notification from the V8 Inspector is received.
+         */
+        once(event: 'inspectorNotification', listener: (message: InspectorNotification<{}>) => void): this;
+        /**
+         * Issued when new execution context is created.
+         */
+        once(event: 'Runtime.executionContextCreated', listener: (message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>) => void): this;
+        /**
+         * Issued when execution context is destroyed.
+         */
+        once(event: 'Runtime.executionContextDestroyed', listener: (message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>) => void): this;
+        /**
+         * Issued when all executionContexts were cleared in browser
+         */
+        once(event: 'Runtime.executionContextsCleared', listener: () => void): this;
+        /**
+         * Issued when exception was thrown and unhandled.
+         */
+        once(event: 'Runtime.exceptionThrown', listener: (message: InspectorNotification<Runtime.ExceptionThrownEventDataType>) => void): this;
+        /**
+         * Issued when unhandled exception was revoked.
+         */
+        once(event: 'Runtime.exceptionRevoked', listener: (message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>) => void): this;
+        /**
+         * Issued when console API was called.
+         */
+        once(event: 'Runtime.consoleAPICalled', listener: (message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>) => void): this;
+        /**
+         * Issued when object should be inspected (for example, as a result of inspect() command line API call).
+         */
+        once(event: 'Runtime.inspectRequested', listener: (message: InspectorNotification<Runtime.InspectRequestedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine parses script. This event is also fired for all known and uncollected scripts upon enabling debugger.
+         */
+        once(event: 'Debugger.scriptParsed', listener: (message: InspectorNotification<Debugger.ScriptParsedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine fails to parse the script.
+         */
+        once(event: 'Debugger.scriptFailedToParse', listener: (message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>) => void): this;
+        /**
+         * Fired when breakpoint is resolved to an actual script and location.
+         */
+        once(event: 'Debugger.breakpointResolved', listener: (message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria.
+         */
+        once(event: 'Debugger.paused', listener: (message: InspectorNotification<Debugger.PausedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine resumed execution.
+         */
+        once(event: 'Debugger.resumed', listener: () => void): this;
+        /**
+         * Issued when new console message is added.
+         */
+        once(event: 'Console.messageAdded', listener: (message: InspectorNotification<Console.MessageAddedEventDataType>) => void): this;
+        /**
+         * Sent when new profile recording is started using console.profile() call.
+         */
+        once(event: 'Profiler.consoleProfileStarted', listener: (message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>) => void): this;
+        once(event: 'Profiler.consoleProfileFinished', listener: (message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>) => void): this;
+        once(event: 'HeapProfiler.addHeapSnapshotChunk', listener: (message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>) => void): this;
+        once(event: 'HeapProfiler.resetProfiles', listener: () => void): this;
+        once(event: 'HeapProfiler.reportHeapSnapshotProgress', listener: (message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend regularly sends a current value for last seen object id and corresponding timestamp. If the were changes in the heap since last event then one or more heapStatsUpdate events will be sent before a new lastSeenObjectId event.
+         */
+        once(event: 'HeapProfiler.lastSeenObjectId', listener: (message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend may send update for one or more fragments
+         */
+        once(event: 'HeapProfiler.heapStatsUpdate', listener: (message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>) => void): this;
+        /**
+         * Contains an bucket of collected trace events.
+         */
+        once(event: 'NodeTracing.dataCollected', listener: (message: InspectorNotification<NodeTracing.DataCollectedEventDataType>) => void): this;
+        /**
+         * Signals that tracing is stopped and there is no trace buffers pending flush, all data were
+         * delivered via dataCollected events.
+         */
+        once(event: 'NodeTracing.tracingComplete', listener: () => void): this;
+        /**
+         * Issued when attached to a worker.
+         */
+        once(event: 'NodeWorker.attachedToWorker', listener: (message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>) => void): this;
+        /**
+         * Issued when detached from the worker.
+         */
+        once(event: 'NodeWorker.detachedFromWorker', listener: (message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>) => void): this;
+        /**
+         * Notifies about a new protocol message received from the session
+         * (session ID is provided in attachedToWorker notification).
+         */
+        once(event: 'NodeWorker.receivedMessageFromWorker', listener: (message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>) => void): this;
+        /**
+         * This event is fired instead of `Runtime.executionContextDestroyed` when
+         * enabled.
+         * It is fired when the Node process finished all code execution and is
+         * waiting for all frontends to disconnect.
+         */
+        once(event: 'NodeRuntime.waitingForDisconnect', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        /**
+         * Emitted when any notification from the V8 Inspector is received.
+         */
+        prependListener(event: 'inspectorNotification', listener: (message: InspectorNotification<{}>) => void): this;
+        /**
+         * Issued when new execution context is created.
+         */
+        prependListener(event: 'Runtime.executionContextCreated', listener: (message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>) => void): this;
+        /**
+         * Issued when execution context is destroyed.
+         */
+        prependListener(event: 'Runtime.executionContextDestroyed', listener: (message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>) => void): this;
+        /**
+         * Issued when all executionContexts were cleared in browser
+         */
+        prependListener(event: 'Runtime.executionContextsCleared', listener: () => void): this;
+        /**
+         * Issued when exception was thrown and unhandled.
+         */
+        prependListener(event: 'Runtime.exceptionThrown', listener: (message: InspectorNotification<Runtime.ExceptionThrownEventDataType>) => void): this;
+        /**
+         * Issued when unhandled exception was revoked.
+         */
+        prependListener(event: 'Runtime.exceptionRevoked', listener: (message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>) => void): this;
+        /**
+         * Issued when console API was called.
+         */
+        prependListener(event: 'Runtime.consoleAPICalled', listener: (message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>) => void): this;
+        /**
+         * Issued when object should be inspected (for example, as a result of inspect() command line API call).
+         */
+        prependListener(event: 'Runtime.inspectRequested', listener: (message: InspectorNotification<Runtime.InspectRequestedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine parses script. This event is also fired for all known and uncollected scripts upon enabling debugger.
+         */
+        prependListener(event: 'Debugger.scriptParsed', listener: (message: InspectorNotification<Debugger.ScriptParsedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine fails to parse the script.
+         */
+        prependListener(event: 'Debugger.scriptFailedToParse', listener: (message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>) => void): this;
+        /**
+         * Fired when breakpoint is resolved to an actual script and location.
+         */
+        prependListener(event: 'Debugger.breakpointResolved', listener: (message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria.
+         */
+        prependListener(event: 'Debugger.paused', listener: (message: InspectorNotification<Debugger.PausedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine resumed execution.
+         */
+        prependListener(event: 'Debugger.resumed', listener: () => void): this;
+        /**
+         * Issued when new console message is added.
+         */
+        prependListener(event: 'Console.messageAdded', listener: (message: InspectorNotification<Console.MessageAddedEventDataType>) => void): this;
+        /**
+         * Sent when new profile recording is started using console.profile() call.
+         */
+        prependListener(event: 'Profiler.consoleProfileStarted', listener: (message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>) => void): this;
+        prependListener(event: 'Profiler.consoleProfileFinished', listener: (message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>) => void): this;
+        prependListener(event: 'HeapProfiler.addHeapSnapshotChunk', listener: (message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>) => void): this;
+        prependListener(event: 'HeapProfiler.resetProfiles', listener: () => void): this;
+        prependListener(event: 'HeapProfiler.reportHeapSnapshotProgress', listener: (message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend regularly sends a current value for last seen object id and corresponding timestamp. If the were changes in the heap since last event then one or more heapStatsUpdate events will be sent before a new lastSeenObjectId event.
+         */
+        prependListener(event: 'HeapProfiler.lastSeenObjectId', listener: (message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend may send update for one or more fragments
+         */
+        prependListener(event: 'HeapProfiler.heapStatsUpdate', listener: (message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>) => void): this;
+        /**
+         * Contains an bucket of collected trace events.
+         */
+        prependListener(event: 'NodeTracing.dataCollected', listener: (message: InspectorNotification<NodeTracing.DataCollectedEventDataType>) => void): this;
+        /**
+         * Signals that tracing is stopped and there is no trace buffers pending flush, all data were
+         * delivered via dataCollected events.
+         */
+        prependListener(event: 'NodeTracing.tracingComplete', listener: () => void): this;
+        /**
+         * Issued when attached to a worker.
+         */
+        prependListener(event: 'NodeWorker.attachedToWorker', listener: (message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>) => void): this;
+        /**
+         * Issued when detached from the worker.
+         */
+        prependListener(event: 'NodeWorker.detachedFromWorker', listener: (message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>) => void): this;
+        /**
+         * Notifies about a new protocol message received from the session
+         * (session ID is provided in attachedToWorker notification).
+         */
+        prependListener(event: 'NodeWorker.receivedMessageFromWorker', listener: (message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>) => void): this;
+        /**
+         * This event is fired instead of `Runtime.executionContextDestroyed` when
+         * enabled.
+         * It is fired when the Node process finished all code execution and is
+         * waiting for all frontends to disconnect.
+         */
+        prependListener(event: 'NodeRuntime.waitingForDisconnect', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        /**
+         * Emitted when any notification from the V8 Inspector is received.
+         */
+        prependOnceListener(event: 'inspectorNotification', listener: (message: InspectorNotification<{}>) => void): this;
+        /**
+         * Issued when new execution context is created.
+         */
+        prependOnceListener(event: 'Runtime.executionContextCreated', listener: (message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>) => void): this;
+        /**
+         * Issued when execution context is destroyed.
+         */
+        prependOnceListener(event: 'Runtime.executionContextDestroyed', listener: (message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>) => void): this;
+        /**
+         * Issued when all executionContexts were cleared in browser
+         */
+        prependOnceListener(event: 'Runtime.executionContextsCleared', listener: () => void): this;
+        /**
+         * Issued when exception was thrown and unhandled.
+         */
+        prependOnceListener(event: 'Runtime.exceptionThrown', listener: (message: InspectorNotification<Runtime.ExceptionThrownEventDataType>) => void): this;
+        /**
+         * Issued when unhandled exception was revoked.
+         */
+        prependOnceListener(event: 'Runtime.exceptionRevoked', listener: (message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>) => void): this;
+        /**
+         * Issued when console API was called.
+         */
+        prependOnceListener(event: 'Runtime.consoleAPICalled', listener: (message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>) => void): this;
+        /**
+         * Issued when object should be inspected (for example, as a result of inspect() command line API call).
+         */
+        prependOnceListener(event: 'Runtime.inspectRequested', listener: (message: InspectorNotification<Runtime.InspectRequestedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine parses script. This event is also fired for all known and uncollected scripts upon enabling debugger.
+         */
+        prependOnceListener(event: 'Debugger.scriptParsed', listener: (message: InspectorNotification<Debugger.ScriptParsedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine fails to parse the script.
+         */
+        prependOnceListener(event: 'Debugger.scriptFailedToParse', listener: (message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>) => void): this;
+        /**
+         * Fired when breakpoint is resolved to an actual script and location.
+         */
+        prependOnceListener(event: 'Debugger.breakpointResolved', listener: (message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria.
+         */
+        prependOnceListener(event: 'Debugger.paused', listener: (message: InspectorNotification<Debugger.PausedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine resumed execution.
+         */
+        prependOnceListener(event: 'Debugger.resumed', listener: () => void): this;
+        /**
+         * Issued when new console message is added.
+         */
+        prependOnceListener(event: 'Console.messageAdded', listener: (message: InspectorNotification<Console.MessageAddedEventDataType>) => void): this;
+        /**
+         * Sent when new profile recording is started using console.profile() call.
+         */
+        prependOnceListener(event: 'Profiler.consoleProfileStarted', listener: (message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>) => void): this;
+        prependOnceListener(event: 'Profiler.consoleProfileFinished', listener: (message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>) => void): this;
+        prependOnceListener(event: 'HeapProfiler.addHeapSnapshotChunk', listener: (message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>) => void): this;
+        prependOnceListener(event: 'HeapProfiler.resetProfiles', listener: () => void): this;
+        prependOnceListener(event: 'HeapProfiler.reportHeapSnapshotProgress', listener: (message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend regularly sends a current value for last seen object id and corresponding timestamp. If the were changes in the heap since last event then one or more heapStatsUpdate events will be sent before a new lastSeenObjectId event.
+         */
+        prependOnceListener(event: 'HeapProfiler.lastSeenObjectId', listener: (message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend may send update for one or more fragments
+         */
+        prependOnceListener(event: 'HeapProfiler.heapStatsUpdate', listener: (message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>) => void): this;
+        /**
+         * Contains an bucket of collected trace events.
+         */
+        prependOnceListener(event: 'NodeTracing.dataCollected', listener: (message: InspectorNotification<NodeTracing.DataCollectedEventDataType>) => void): this;
+        /**
+         * Signals that tracing is stopped and there is no trace buffers pending flush, all data were
+         * delivered via dataCollected events.
+         */
+        prependOnceListener(event: 'NodeTracing.tracingComplete', listener: () => void): this;
+        /**
+         * Issued when attached to a worker.
+         */
+        prependOnceListener(event: 'NodeWorker.attachedToWorker', listener: (message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>) => void): this;
+        /**
+         * Issued when detached from the worker.
+         */
+        prependOnceListener(event: 'NodeWorker.detachedFromWorker', listener: (message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>) => void): this;
+        /**
+         * Notifies about a new protocol message received from the session
+         * (session ID is provided in attachedToWorker notification).
+         */
+        prependOnceListener(event: 'NodeWorker.receivedMessageFromWorker', listener: (message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>) => void): this;
+        /**
+         * This event is fired instead of `Runtime.executionContextDestroyed` when
+         * enabled.
+         * It is fired when the Node process finished all code execution and is
+         * waiting for all frontends to disconnect.
+         */
+        prependOnceListener(event: 'NodeRuntime.waitingForDisconnect', listener: () => void): this;
+    }
+    /**
+     * Activate inspector on host and port. Equivalent to`node --inspect=[[host:]port]`, but can be done programmatically after node has
+     * started.
+     *
+     * If wait is `true`, will block until a client has connected to the inspect port
+     * and flow control has been passed to the debugger client.
+     *
+     * See the `security warning` regarding the `host`parameter usage.
+     * @param [port='what was specified on the CLI'] Port to listen on for inspector connections. Optional.
+     * @param [host='what was specified on the CLI'] Host to listen on for inspector connections. Optional.
+     * @param [wait=false] Block until a client has connected. Optional.
+     */
+    function open(port?: number, host?: string, wait?: boolean): void;
+    /**
+     * Deactivate the inspector. Blocks until there are no active connections.
+     */
+    function close(): void;
+    /**
+     * Return the URL of the active inspector, or `undefined` if there is none.
+     *
+     * ```console
+     * $ node --inspect -p 'inspector.url()'
+     * Debugger listening on ws://127.0.0.1:9229/166e272e-7a30-4d09-97ce-f1c012b43c34
+     * For help, see: https://nodejs.org/en/docs/inspector
+     * ws://127.0.0.1:9229/166e272e-7a30-4d09-97ce-f1c012b43c34
+     *
+     * $ node --inspect=localhost:3000 -p 'inspector.url()'
+     * Debugger listening on ws://localhost:3000/51cf8d0e-3c36-4c59-8efd-54519839e56a
+     * For help, see: https://nodejs.org/en/docs/inspector
+     * ws://localhost:3000/51cf8d0e-3c36-4c59-8efd-54519839e56a
+     *
+     * $ node -p 'inspector.url()'
+     * undefined
+     * ```
+     */
+    function url(): string | undefined;
+    /**
+     * Blocks until a client (existing or connected later) has sent`Runtime.runIfWaitingForDebugger` command.
+     *
+     * An exception will be thrown if there is no active inspector.
+     * @since v12.7.0
+     */
+    function waitForDebugger(): void;
+}
+/**
+ * The inspector module provides an API for interacting with the V8 inspector.
+ */
+declare module 'node:inspector' {
+    import inspector = require('inspector');
+    export = inspector;
+}
diff --git a/igv_component/node_modules/@types/node/module.d.ts b/igv_component/node_modules/@types/node/module.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d83aec94aae2df96e4028c6fdb09bf61051e5a38
--- /dev/null
+++ b/igv_component/node_modules/@types/node/module.d.ts
@@ -0,0 +1,114 @@
+/**
+ * @since v0.3.7
+ */
+declare module 'module' {
+    import { URL } from 'node:url';
+    namespace Module {
+        /**
+         * The `module.syncBuiltinESMExports()` method updates all the live bindings for
+         * builtin `ES Modules` to match the properties of the `CommonJS` exports. It
+         * does not add or remove exported names from the `ES Modules`.
+         *
+         * ```js
+         * const fs = require('fs');
+         * const assert = require('assert');
+         * const { syncBuiltinESMExports } = require('module');
+         *
+         * fs.readFile = newAPI;
+         *
+         * delete fs.readFileSync;
+         *
+         * function newAPI() {
+         *   // ...
+         * }
+         *
+         * fs.newAPI = newAPI;
+         *
+         * syncBuiltinESMExports();
+         *
+         * import('fs').then((esmFS) => {
+         *   // It syncs the existing readFile property with the new value
+         *   assert.strictEqual(esmFS.readFile, newAPI);
+         *   // readFileSync has been deleted from the required fs
+         *   assert.strictEqual('readFileSync' in fs, false);
+         *   // syncBuiltinESMExports() does not remove readFileSync from esmFS
+         *   assert.strictEqual('readFileSync' in esmFS, true);
+         *   // syncBuiltinESMExports() does not add names
+         *   assert.strictEqual(esmFS.newAPI, undefined);
+         * });
+         * ```
+         * @since v12.12.0
+         */
+        function syncBuiltinESMExports(): void;
+        /**
+         * `path` is the resolved path for the file for which a corresponding source map
+         * should be fetched.
+         * @since v13.7.0, v12.17.0
+         */
+        function findSourceMap(path: string, error?: Error): SourceMap;
+        interface SourceMapPayload {
+            file: string;
+            version: number;
+            sources: string[];
+            sourcesContent: string[];
+            names: string[];
+            mappings: string;
+            sourceRoot: string;
+        }
+        interface SourceMapping {
+            generatedLine: number;
+            generatedColumn: number;
+            originalSource: string;
+            originalLine: number;
+            originalColumn: number;
+        }
+        /**
+         * @since v13.7.0, v12.17.0
+         */
+        class SourceMap {
+            /**
+             * Getter for the payload used to construct the `SourceMap` instance.
+             */
+            readonly payload: SourceMapPayload;
+            constructor(payload: SourceMapPayload);
+            /**
+             * Given a line number and column number in the generated source file, returns
+             * an object representing the position in the original file. The object returned
+             * consists of the following keys:
+             */
+            findEntry(line: number, column: number): SourceMapping;
+        }
+    }
+    interface Module extends NodeModule {}
+    class Module {
+        static runMain(): void;
+        static wrap(code: string): string;
+        static createRequire(path: string | URL): NodeRequire;
+        static builtinModules: string[];
+        static Module: typeof Module;
+        constructor(id: string, parent?: Module);
+    }
+    global {
+        interface ImportMeta {
+            url: string;
+            /**
+             * @experimental
+             * This feature is only available with the `--experimental-import-meta-resolve`
+             * command flag enabled.
+             *
+             * Provides a module-relative resolution function scoped to each module, returning
+             * the URL string.
+             *
+             * @param specified The module specifier to resolve relative to `parent`.
+             * @param parent The absolute parent module URL to resolve from. If none
+             * is specified, the value of `import.meta.url` is used as the default.
+             */
+            resolve?(specified: string, parent?: string | URL): Promise<string>;
+        }
+    }
+    export = Module;
+}
+declare module 'node:module' {
+    import module = require('module');
+    export = module;
+}
diff --git a/igv_component/node_modules/@types/node/net.d.ts b/igv_component/node_modules/@types/node/net.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..eaa08bcf36a046c85720398f9da0a06f4ff108bd
--- /dev/null
+++ b/igv_component/node_modules/@types/node/net.d.ts
@@ -0,0 +1,838 @@
+/**
+ * > Stability: 2 - Stable
+ *
+ * The `net` module provides an asynchronous network API for creating stream-based
+ * TCP or `IPC` servers ({@link createServer}) and clients
+ * ({@link createConnection}).
+ *
+ * It can be accessed using:
+ *
+ * ```js
+ * const net = require('net');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/net.js)
+ */
+declare module 'net' {
+    import * as stream from 'node:stream';
+    import { Abortable, EventEmitter } from 'node:events';
+    import * as dns from 'node:dns';
+    type LookupFunction = (hostname: string, options: dns.LookupOneOptions, callback: (err: NodeJS.ErrnoException | null, address: string, family: number) => void) => void;
+    interface AddressInfo {
+        address: string;
+        family: string;
+        port: number;
+    }
+    interface SocketConstructorOpts {
+        fd?: number | undefined;
+        allowHalfOpen?: boolean | undefined;
+        readable?: boolean | undefined;
+        writable?: boolean | undefined;
+        signal?: AbortSignal;
+    }
+    interface OnReadOpts {
+        buffer: Uint8Array | (() => Uint8Array);
+        /**
+         * This function is called for every chunk of incoming data.
+         * Two arguments are passed to it: the number of bytes written to buffer and a reference to buffer.
+         * Return false from this function to implicitly pause() the socket.
+         */
+        callback(bytesWritten: number, buf: Uint8Array): boolean;
+    }
+    interface ConnectOpts {
+        /**
+         * If specified, incoming data is stored in a single buffer and passed to the supplied callback when data arrives on the socket.
+         * Note: this will cause the streaming functionality to not provide any data, however events like 'error', 'end', and 'close' will
+         * still be emitted as normal and methods like pause() and resume() will also behave as expected.
+         */
+        onread?: OnReadOpts | undefined;
+    }
+    interface TcpSocketConnectOpts extends ConnectOpts {
+        port: number;
+        host?: string | undefined;
+        localAddress?: string | undefined;
+        localPort?: number | undefined;
+        hints?: number | undefined;
+        family?: number | undefined;
+        lookup?: LookupFunction | undefined;
+        noDelay?: boolean | undefined;
+        keepAlive?: boolean | undefined;
+        keepAliveInitialDelay?: number | undefined;
+    }
+    interface IpcSocketConnectOpts extends ConnectOpts {
+        path: string;
+    }
+    type SocketConnectOpts = TcpSocketConnectOpts | IpcSocketConnectOpts;
+    type SocketReadyState = 'opening' | 'open' | 'readOnly' | 'writeOnly' | 'closed';
+    /**
+     * This class is an abstraction of a TCP socket or a streaming `IPC` endpoint
+     * (uses named pipes on Windows, and Unix domain sockets otherwise). It is also
+     * an `EventEmitter`.
+     *
+     * A `net.Socket` can be created by the user and used directly to interact with
+     * a server. For example, it is returned by {@link createConnection},
+     * so the user can use it to talk to the server.
+     *
+     * It can also be created by Node.js and passed to the user when a connection
+     * is received. For example, it is passed to the listeners of a `'connection'` event emitted on a {@link Server}, so the user can use
+     * it to interact with the client.
+     * @since v0.3.4
+     */
+    class Socket extends stream.Duplex {
+        constructor(options?: SocketConstructorOpts);
+        /**
+         * Sends data on the socket. The second parameter specifies the encoding in the
+         * case of a string. It defaults to UTF8 encoding.
+         *
+         * Returns `true` if the entire data was flushed successfully to the kernel
+         * buffer. Returns `false` if all or part of the data was queued in user memory.`'drain'` will be emitted when the buffer is again free.
+         *
+         * The optional `callback` parameter will be executed when the data is finally
+         * written out, which may not be immediately.
+         *
+         * See `Writable` stream `write()` method for more
+         * information.
+         * @since v0.1.90
+         * @param [encoding='utf8'] Only used when data is `string`.
+         */
+        write(buffer: Uint8Array | string, cb?: (err?: Error) => void): boolean;
+        write(str: Uint8Array | string, encoding?: BufferEncoding, cb?: (err?: Error) => void): boolean;
+        /**
+         * Initiate a connection on a given socket.
+         *
+         * Possible signatures:
+         *
+         * * `socket.connect(options[, connectListener])`
+         * * `socket.connect(path[, connectListener])` for `IPC` connections.
+         * * `socket.connect(port[, host][, connectListener])` for TCP connections.
+         * * Returns: `net.Socket` The socket itself.
+         *
+         * This function is asynchronous. When the connection is established, the `'connect'` event will be emitted. If there is a problem connecting,
+         * instead of a `'connect'` event, an `'error'` event will be emitted with
+         * the error passed to the `'error'` listener.
+         * The last parameter `connectListener`, if supplied, will be added as a listener
+         * for the `'connect'` event **once**.
+         *
+         * This function should only be used for reconnecting a socket after`'close'` has been emitted or otherwise it may lead to undefined
+         * behavior.
+         */
+        connect(options: SocketConnectOpts, connectionListener?: () => void): this;
+        connect(port: number, host: string, connectionListener?: () => void): this;
+        connect(port: number, connectionListener?: () => void): this;
+        connect(path: string, connectionListener?: () => void): this;
+        /**
+         * Set the encoding for the socket as a `Readable Stream`. See `readable.setEncoding()` for more information.
+         * @since v0.1.90
+         * @return The socket itself.
+         */
+        setEncoding(encoding?: BufferEncoding): this;
+        /**
+         * Pauses the reading of data. That is, `'data'` events will not be emitted.
+         * Useful to throttle back an upload.
+         * @return The socket itself.
+         */
+        pause(): this;
+        /**
+         * Resumes reading after a call to `socket.pause()`.
+         * @return The socket itself.
+         */
+        resume(): this;
+        /**
+         * Sets the socket to timeout after `timeout` milliseconds of inactivity on
+         * the socket. By default `net.Socket` do not have a timeout.
+         *
+         * When an idle timeout is triggered the socket will receive a `'timeout'` event but the connection will not be severed. The user must manually call `socket.end()` or `socket.destroy()` to
+         * end the connection.
+         *
+         * ```js
+         * socket.setTimeout(3000);
+         * socket.on('timeout', () => {
+         *   console.log('socket timeout');
+         *   socket.end();
+         * });
+         * ```
+         *
+         * If `timeout` is 0, then the existing idle timeout is disabled.
+         *
+         * The optional `callback` parameter will be added as a one-time listener for the `'timeout'` event.
+         * @since v0.1.90
+         * @return The socket itself.
+         */
+        setTimeout(timeout: number, callback?: () => void): this;
+        /**
+         * Enable/disable the use of Nagle's algorithm.
+         *
+         * When a TCP connection is created, it will have Nagle's algorithm enabled.
+         *
+         * Nagle's algorithm delays data before it is sent via the network. It attempts
+         * to optimize throughput at the expense of latency.
+         *
+         * Passing `true` for `noDelay` or not passing an argument will disable Nagle's
+         * algorithm for the socket. Passing `false` for `noDelay` will enable Nagle's
+         * algorithm.
+         * @since v0.1.90
+         * @param [noDelay=true]
+         * @return The socket itself.
+         */
+        setNoDelay(noDelay?: boolean): this;
+        /**
+         * Enable/disable keep-alive functionality, and optionally set the initial
+         * delay before the first keepalive probe is sent on an idle socket.
+         *
+         * Set `initialDelay` (in milliseconds) to set the delay between the last
+         * data packet received and the first keepalive probe. Setting `0` for`initialDelay` will leave the value unchanged from the default
+         * (or previous) setting.
+         *
+         * Enabling the keep-alive functionality will set the following socket options:
+         *
+         * * `SO_KEEPALIVE=1`
+         * * `TCP_KEEPIDLE=initialDelay`
+         * * `TCP_KEEPCNT=10`
+         * * `TCP_KEEPINTVL=1`
+         * @since v0.1.92
+         * @param [enable=false]
+         * @param [initialDelay=0]
+         * @return The socket itself.
+         */
+        setKeepAlive(enable?: boolean, initialDelay?: number): this;
+        /**
+         * Returns the bound `address`, the address `family` name and `port` of the
+         * socket as reported by the operating system:`{ port: 12346, family: 'IPv4', address: '127.0.0.1' }`
+         * @since v0.1.90
+         */
+        address(): AddressInfo | {};
+        /**
+         * Calling `unref()` on a socket will allow the program to exit if this is the only
+         * active socket in the event system. If the socket is already `unref`ed calling`unref()` again will have no effect.
+         * @since v0.9.1
+         * @return The socket itself.
+         */
+        unref(): this;
+        /**
+         * Opposite of `unref()`, calling `ref()` on a previously `unref`ed socket will _not_ let the program exit if it's the only socket left (the default behavior).
+         * If the socket is `ref`ed calling `ref` again will have no effect.
+         * @since v0.9.1
+         * @return The socket itself.
+         */
+        ref(): this;
+        /**
+         * This property shows the number of characters buffered for writing. The buffer
+         * may contain strings whose length after encoding is not yet known. So this number
+         * is only an approximation of the number of bytes in the buffer.
+         *
+         * `net.Socket` has the property that `socket.write()` always works. This is to
+         * help users get up and running quickly. The computer cannot always keep up
+         * with the amount of data that is written to a socket. The network connection
+         * simply might be too slow. Node.js will internally queue up the data written to a
+         * socket and send it out over the wire when it is possible.
+         *
+         * The consequence of this internal buffering is that memory may grow.
+         * Users who experience large or growing `bufferSize` should attempt to
+         * "throttle" the data flows in their program with `socket.pause()` and `socket.resume()`.
+         * @since v0.3.8
+         * @deprecated Since v14.6.0 - Use `writableLength` instead.
+         */
+        readonly bufferSize: number;
+        /**
+         * The amount of received bytes.
+         * @since v0.5.3
+         */
+        readonly bytesRead: number;
+        /**
+         * The amount of bytes sent.
+         * @since v0.5.3
+         */
+        readonly bytesWritten: number;
+        /**
+         * If `true`,`socket.connect(options[, connectListener])` was
+         * called and has not yet finished. It will stay `true` until the socket becomes
+         * connected, then it is set to `false` and the `'connect'` event is emitted. Note
+         * that the `socket.connect(options[, connectListener])` callback is a listener for the `'connect'` event.
+         * @since v6.1.0
+         */
+        readonly connecting: boolean;
+        /**
+         * See `writable.destroyed` for further details.
+         */
+        readonly destroyed: boolean;
+        /**
+         * The string representation of the local IP address the remote client is
+         * connecting on. For example, in a server listening on `'0.0.0.0'`, if a client
+         * connects on `'192.168.1.1'`, the value of `socket.localAddress` would be`'192.168.1.1'`.
+         * @since v0.9.6
+         */
+        readonly localAddress?: string;
+        /**
+         * The numeric representation of the local port. For example, `80` or `21`.
+         * @since v0.9.6
+         */
+        readonly localPort?: number;
+        /**
+         * This property represents the state of the connection as a string.
+         * @see {https://nodejs.org/api/net.html#socketreadystate}
+         * @since v0.5.0
+         */
+        readonly readyState: SocketReadyState;
+        /**
+         * The string representation of the remote IP address. For example,`'74.125.127.100'` or `'2001:4860:a005::68'`. Value may be `undefined` if
+         * the socket is destroyed (for example, if the client disconnected).
+         * @since v0.5.10
+         */
+        readonly remoteAddress?: string | undefined;
+        /**
+         * The string representation of the remote IP family. `'IPv4'` or `'IPv6'`.
+         * @since v0.11.14
+         */
+        readonly remoteFamily?: string | undefined;
+        /**
+         * The numeric representation of the remote port. For example, `80` or `21`.
+         * @since v0.5.10
+         */
+        readonly remotePort?: number | undefined;
+        /**
+         * The socket timeout in milliseconds as set by socket.setTimeout(). It is undefined if a timeout has not been set.
+         * @since v10.7.0
+         */
+        readonly timeout?: number | undefined;
+        /**
+         * Half-closes the socket. i.e., it sends a FIN packet. It is possible the
+         * server will still send some data.
+         *
+         * See `writable.end()` for further details.
+         * @since v0.1.90
+         * @param [encoding='utf8'] Only used when data is `string`.
+         * @param callback Optional callback for when the socket is finished.
+         * @return The socket itself.
+         */
+        end(callback?: () => void): this;
+        end(buffer: Uint8Array | string, callback?: () => void): this;
+        end(str: Uint8Array | string, encoding?: BufferEncoding, callback?: () => void): this;
+        /**
+         * events.EventEmitter
+         *   1. close
+         *   2. connect
+         *   3. data
+         *   4. drain
+         *   5. end
+         *   6. error
+         *   7. lookup
+         *   8. timeout
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: (hadError: boolean) => void): this;
+        addListener(event: 'connect', listener: () => void): this;
+        addListener(event: 'data', listener: (data: Buffer) => void): this;
+        addListener(event: 'drain', listener: () => void): this;
+        addListener(event: 'end', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'lookup', listener: (err: Error, address: string, family: string | number, host: string) => void): this;
+        addListener(event: 'ready', listener: () => void): this;
+        addListener(event: 'timeout', listener: () => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'close', hadError: boolean): boolean;
+        emit(event: 'connect'): boolean;
+        emit(event: 'data', data: Buffer): boolean;
+        emit(event: 'drain'): boolean;
+        emit(event: 'end'): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'lookup', err: Error, address: string, family: string | number, host: string): boolean;
+        emit(event: 'ready'): boolean;
+        emit(event: 'timeout'): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: (hadError: boolean) => void): this;
+        on(event: 'connect', listener: () => void): this;
+        on(event: 'data', listener: (data: Buffer) => void): this;
+        on(event: 'drain', listener: () => void): this;
+        on(event: 'end', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'lookup', listener: (err: Error, address: string, family: string | number, host: string) => void): this;
+        on(event: 'ready', listener: () => void): this;
+        on(event: 'timeout', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: (hadError: boolean) => void): this;
+        once(event: 'connect', listener: () => void): this;
+        once(event: 'data', listener: (data: Buffer) => void): this;
+        once(event: 'drain', listener: () => void): this;
+        once(event: 'end', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'lookup', listener: (err: Error, address: string, family: string | number, host: string) => void): this;
+        once(event: 'ready', listener: () => void): this;
+        once(event: 'timeout', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: (hadError: boolean) => void): this;
+        prependListener(event: 'connect', listener: () => void): this;
+        prependListener(event: 'data', listener: (data: Buffer) => void): this;
+        prependListener(event: 'drain', listener: () => void): this;
+        prependListener(event: 'end', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'lookup', listener: (err: Error, address: string, family: string | number, host: string) => void): this;
+        prependListener(event: 'ready', listener: () => void): this;
+        prependListener(event: 'timeout', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: (hadError: boolean) => void): this;
+        prependOnceListener(event: 'connect', listener: () => void): this;
+        prependOnceListener(event: 'data', listener: (data: Buffer) => void): this;
+        prependOnceListener(event: 'drain', listener: () => void): this;
+        prependOnceListener(event: 'end', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'lookup', listener: (err: Error, address: string, family: string | number, host: string) => void): this;
+        prependOnceListener(event: 'ready', listener: () => void): this;
+        prependOnceListener(event: 'timeout', listener: () => void): this;
+    }
+    interface ListenOptions extends Abortable {
+        port?: number | undefined;
+        host?: string | undefined;
+        backlog?: number | undefined;
+        path?: string | undefined;
+        exclusive?: boolean | undefined;
+        readableAll?: boolean | undefined;
+        writableAll?: boolean | undefined;
+        /**
+         * @default false
+         */
+        ipv6Only?: boolean | undefined;
+    }
+    interface ServerOpts {
+        /**
+         * Indicates whether half-opened TCP connections are allowed.
+         * @default false
+         */
+        allowHalfOpen?: boolean | undefined;
+        /**
+         * Indicates whether the socket should be paused on incoming connections.
+         * @default false
+         */
+        pauseOnConnect?: boolean | undefined;
+        /**
+         * If set to `true`, it disables the use of Nagle's algorithm immediately after a new incoming connection is received.
+         * @default false
+         * @since v16.5.0
+         */
+        noDelay?: boolean | undefined;
+        /**
+         * If set to `true`, it enables keep-alive functionality on the socket immediately after a new incoming connection is received,
+         * similarly on what is done in `socket.setKeepAlive([enable][, initialDelay])`.
+         * @default false
+         * @since v16.5.0
+         */
+        keepAlive?: boolean | undefined;
+        /**
+         * If set to a positive number, it sets the initial delay before the first keepalive probe is sent on an idle socket.
+         * @default 0
+         * @since v16.5.0
+         */
+        keepAliveInitialDelay?: number | undefined;
+    }
+    /**
+     * This class is used to create a TCP or `IPC` server.
+     * @since v0.1.90
+     */
+    class Server extends EventEmitter {
+        constructor(connectionListener?: (socket: Socket) => void);
+        constructor(options?: ServerOpts, connectionListener?: (socket: Socket) => void);
+        /**
+         * Start a server listening for connections. A `net.Server` can be a TCP or
+         * an `IPC` server depending on what it listens to.
+         *
+         * Possible signatures:
+         *
+         * * `server.listen(handle[, backlog][, callback])`
+         * * `server.listen(options[, callback])`
+         * * `server.listen(path[, backlog][, callback])` for `IPC` servers
+         * * `server.listen([port[, host[, backlog]]][, callback])` for TCP servers
+         *
+         * This function is asynchronous. When the server starts listening, the `'listening'` event will be emitted. The last parameter `callback`will be added as a listener for the `'listening'`
+         * event.
+         *
+         * All `listen()` methods can take a `backlog` parameter to specify the maximum
+         * length of the queue of pending connections. The actual length will be determined
+         * by the OS through sysctl settings such as `tcp_max_syn_backlog` and `somaxconn`on Linux. The default value of this parameter is 511 (not 512).
+         *
+         * All {@link Socket} are set to `SO_REUSEADDR` (see [`socket(7)`](https://man7.org/linux/man-pages/man7/socket.7.html) for
+         * details).
+         *
+         * The `server.listen()` method can be called again if and only if there was an
+         * error during the first `server.listen()` call or `server.close()` has been
+         * called. Otherwise, an `ERR_SERVER_ALREADY_LISTEN` error will be thrown.
+         *
+         * One of the most common errors raised when listening is `EADDRINUSE`.
+         * This happens when another server is already listening on the requested`port`/`path`/`handle`. One way to handle this would be to retry
+         * after a certain amount of time:
+         *
+         * ```js
+         * server.on('error', (e) => {
+         *   if (e.code === 'EADDRINUSE') {
+         *     console.log('Address in use, retrying...');
+         *     setTimeout(() => {
+         *       server.close();
+         *       server.listen(PORT, HOST);
+         *     }, 1000);
+         *   }
+         * });
+         * ```
+         */
+        listen(port?: number, hostname?: string, backlog?: number, listeningListener?: () => void): this;
+        listen(port?: number, hostname?: string, listeningListener?: () => void): this;
+        listen(port?: number, backlog?: number, listeningListener?: () => void): this;
+        listen(port?: number, listeningListener?: () => void): this;
+        listen(path: string, backlog?: number, listeningListener?: () => void): this;
+        listen(path: string, listeningListener?: () => void): this;
+        listen(options: ListenOptions, listeningListener?: () => void): this;
+        listen(handle: any, backlog?: number, listeningListener?: () => void): this;
+        listen(handle: any, listeningListener?: () => void): this;
+        /**
+         * Stops the server from accepting new connections and keeps existing
+         * connections. This function is asynchronous, the server is finally closed
+         * when all connections are ended and the server emits a `'close'` event.
+         * The optional `callback` will be called once the `'close'` event occurs. Unlike
+         * that event, it will be called with an `Error` as its only argument if the server
+         * was not open when it was closed.
+         * @since v0.1.90
+         * @param callback Called when the server is closed.
+         */
+        close(callback?: (err?: Error) => void): this;
+        /**
+         * Returns the bound `address`, the address `family` name, and `port` of the server
+         * as reported by the operating system if listening on an IP socket
+         * (useful to find which port was assigned when getting an OS-assigned address):`{ port: 12346, family: 'IPv4', address: '127.0.0.1' }`.
+         *
+         * For a server listening on a pipe or Unix domain socket, the name is returned
+         * as a string.
+         *
+         * ```js
+         * const server = net.createServer((socket) => {
+         *   socket.end('goodbye\n');
+         * }).on('error', (err) => {
+         *   // Handle errors here.
+         *   throw err;
+         * });
+         *
+         * // Grab an arbitrary unused port.
+         * server.listen(() => {
+         *   console.log('opened server on', server.address());
+         * });
+         * ```
+         *
+         * `server.address()` returns `null` before the `'listening'` event has been
+         * emitted or after calling `server.close()`.
+         * @since v0.1.90
+         */
+        address(): AddressInfo | string | null;
+        /**
+         * Asynchronously get the number of concurrent connections on the server. Works
+         * when sockets were sent to forks.
+         *
+         * Callback should take two arguments `err` and `count`.
+         * @since v0.9.7
+         */
+        getConnections(cb: (error: Error | null, count: number) => void): void;
+        /**
+         * Opposite of `unref()`, calling `ref()` on a previously `unref`ed server will _not_ let the program exit if it's the only server left (the default behavior).
+         * If the server is `ref`ed calling `ref()` again will have no effect.
+         * @since v0.9.1
+         */
+        ref(): this;
+        /**
+         * Calling `unref()` on a server will allow the program to exit if this is the only
+         * active server in the event system. If the server is already `unref`ed calling`unref()` again will have no effect.
+         * @since v0.9.1
+         */
+        unref(): this;
+        /**
+         * Set this property to reject connections when the server's connection count gets
+         * high.
+         *
+         * It is not recommended to use this option once a socket has been sent to a child
+         * with `child_process.fork()`.
+         * @since v0.2.0
+         */
+        maxConnections: number;
+        connections: number;
+        /**
+         * Indicates whether or not the server is listening for connections.
+         * @since v5.7.0
+         */
+        listening: boolean;
+        /**
+         * events.EventEmitter
+         *   1. close
+         *   2. connection
+         *   3. error
+         *   4. listening
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'connection', listener: (socket: Socket) => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'listening', listener: () => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'connection', socket: Socket): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'listening'): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'connection', listener: (socket: Socket) => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'listening', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'connection', listener: (socket: Socket) => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'listening', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'connection', listener: (socket: Socket) => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'listening', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'connection', listener: (socket: Socket) => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'listening', listener: () => void): this;
+    }
+    type IPVersion = 'ipv4' | 'ipv6';
+    /**
+     * The `BlockList` object can be used with some network APIs to specify rules for
+     * disabling inbound or outbound access to specific IP addresses, IP ranges, or
+     * IP subnets.
+     * @since v15.0.0, v14.18.0
+     */
+    class BlockList {
+        /**
+         * Adds a rule to block the given IP address.
+         * @since v15.0.0, v14.18.0
+         * @param address An IPv4 or IPv6 address.
+         * @param [type='ipv4'] Either `'ipv4'` or `'ipv6'`.
+         */
+        addAddress(address: string, type?: IPVersion): void;
+        addAddress(address: SocketAddress): void;
+        /**
+         * Adds a rule to block a range of IP addresses from `start` (inclusive) to`end` (inclusive).
+         * @since v15.0.0, v14.18.0
+         * @param start The starting IPv4 or IPv6 address in the range.
+         * @param end The ending IPv4 or IPv6 address in the range.
+         * @param [type='ipv4'] Either `'ipv4'` or `'ipv6'`.
+         */
+        addRange(start: string, end: string, type?: IPVersion): void;
+        addRange(start: SocketAddress, end: SocketAddress): void;
+        /**
+         * Adds a rule to block a range of IP addresses specified as a subnet mask.
+         * @since v15.0.0, v14.18.0
+         * @param net The network IPv4 or IPv6 address.
+         * @param prefix The number of CIDR prefix bits. For IPv4, this must be a value between `0` and `32`. For IPv6, this must be between `0` and `128`.
+         * @param [type='ipv4'] Either `'ipv4'` or `'ipv6'`.
+         */
+        addSubnet(net: SocketAddress, prefix: number): void;
+        addSubnet(net: string, prefix: number, type?: IPVersion): void;
+        /**
+         * Returns `true` if the given IP address matches any of the rules added to the`BlockList`.
+         *
+         * ```js
+         * const blockList = new net.BlockList();
+         * blockList.addAddress('123.123.123.123');
+         * blockList.addRange('10.0.0.1', '10.0.0.10');
+         * blockList.addSubnet('8592:757c:efae:4e45::', 64, 'ipv6');
+         *
+         * console.log(blockList.check('123.123.123.123'));  // Prints: true
+         * console.log(blockList.check('10.0.0.3'));  // Prints: true
+         * console.log(blockList.check('222.111.111.222'));  // Prints: false
+         *
+         * // IPv6 notation for IPv4 addresses works:
+         * console.log(blockList.check('::ffff:7b7b:7b7b', 'ipv6')); // Prints: true
+         * console.log(blockList.check('::ffff:123.123.123.123', 'ipv6')); // Prints: true
+         * ```
+         * @since v15.0.0, v14.18.0
+         * @param address The IP address to check
+         * @param [type='ipv4'] Either `'ipv4'` or `'ipv6'`.
+         */
+        check(address: SocketAddress): boolean;
+        check(address: string, type?: IPVersion): boolean;
+    }
+    interface TcpNetConnectOpts extends TcpSocketConnectOpts, SocketConstructorOpts {
+        timeout?: number | undefined;
+    }
+    interface IpcNetConnectOpts extends IpcSocketConnectOpts, SocketConstructorOpts {
+        timeout?: number | undefined;
+    }
+    type NetConnectOpts = TcpNetConnectOpts | IpcNetConnectOpts;
+    /**
+     * Creates a new TCP or `IPC` server.
+     *
+     * If `allowHalfOpen` is set to `true`, when the other end of the socket
+     * signals the end of transmission, the server will only send back the end of
+     * transmission when `socket.end()` is explicitly called. For example, in the
+     * context of TCP, when a FIN packed is received, a FIN packed is sent
+     * back only when `socket.end()` is explicitly called. Until then the
+     * connection is half-closed (non-readable but still writable). See `'end'` event and [RFC 1122](https://tools.ietf.org/html/rfc1122) (section 4.2.2.13) for more information.
+     *
+     * If `pauseOnConnect` is set to `true`, then the socket associated with each
+     * incoming connection will be paused, and no data will be read from its handle.
+     * This allows connections to be passed between processes without any data being
+     * read by the original process. To begin reading data from a paused socket, call `socket.resume()`.
+     *
+     * The server can be a TCP server or an `IPC` server, depending on what it `listen()` to.
+     *
+     * Here is an example of a TCP echo server which listens for connections
+     * on port 8124:
+     *
+     * ```js
+     * const net = require('net');
+     * const server = net.createServer((c) => {
+     *   // 'connection' listener.
+     *   console.log('client connected');
+     *   c.on('end', () => {
+     *     console.log('client disconnected');
+     *   });
+     *   c.write('hello\r\n');
+     *   c.pipe(c);
+     * });
+     * server.on('error', (err) => {
+     *   throw err;
+     * });
+     * server.listen(8124, () => {
+     *   console.log('server bound');
+     * });
+     * ```
+     *
+     * Test this by using `telnet`:
+     *
+     * ```console
+     * $ telnet localhost 8124
+     * ```
+     *
+     * To listen on the socket `/tmp/echo.sock`:
+     *
+     * ```js
+     * server.listen('/tmp/echo.sock', () => {
+     *   console.log('server bound');
+     * });
+     * ```
+     *
+     * Use `nc` to connect to a Unix domain socket server:
+     *
+     * ```console
+     * $ nc -U /tmp/echo.sock
+     * ```
+     * @since v0.5.0
+     * @param connectionListener Automatically set as a listener for the {@link 'connection'} event.
+     */
+    function createServer(connectionListener?: (socket: Socket) => void): Server;
+    function createServer(options?: ServerOpts, connectionListener?: (socket: Socket) => void): Server;
+    /**
+     * Aliases to {@link createConnection}.
+     *
+     * Possible signatures:
+     *
+     * * {@link connect}
+     * * {@link connect} for `IPC` connections.
+     * * {@link connect} for TCP connections.
+     */
+    function connect(options: NetConnectOpts, connectionListener?: () => void): Socket;
+    function connect(port: number, host?: string, connectionListener?: () => void): Socket;
+    function connect(path: string, connectionListener?: () => void): Socket;
+    /**
+     * A factory function, which creates a new {@link Socket},
+     * immediately initiates connection with `socket.connect()`,
+     * then returns the `net.Socket` that starts the connection.
+     *
+     * When the connection is established, a `'connect'` event will be emitted
+     * on the returned socket. The last parameter `connectListener`, if supplied,
+     * will be added as a listener for the `'connect'` event **once**.
+     *
+     * Possible signatures:
+     *
+     * * {@link createConnection}
+     * * {@link createConnection} for `IPC` connections.
+     * * {@link createConnection} for TCP connections.
+     *
+     * The {@link connect} function is an alias to this function.
+     */
+    function createConnection(options: NetConnectOpts, connectionListener?: () => void): Socket;
+    function createConnection(port: number, host?: string, connectionListener?: () => void): Socket;
+    function createConnection(path: string, connectionListener?: () => void): Socket;
+    /**
+     * Returns `6` if `input` is an IPv6 address. Returns `4` if `input` is an IPv4
+     * address in [dot-decimal notation](https://en.wikipedia.org/wiki/Dot-decimal_notation) with no leading zeroes. Otherwise, returns`0`.
+     *
+     * ```js
+     * net.isIP('::1'); // returns 6
+     * net.isIP('127.0.0.1'); // returns 4
+     * net.isIP('127.000.000.001'); // returns 0
+     * net.isIP('127.0.0.1/24'); // returns 0
+     * net.isIP('fhqwhgads'); // returns 0
+     * ```
+     * @since v0.3.0
+     */
+    function isIP(input: string): number;
+    /**
+     * Returns `true` if `input` is an IPv4 address in [dot-decimal notation](https://en.wikipedia.org/wiki/Dot-decimal_notation) with no
+     * leading zeroes. Otherwise, returns `false`.
+     *
+     * ```js
+     * net.isIPv4('127.0.0.1'); // returns true
+     * net.isIPv4('127.000.000.001'); // returns false
+     * net.isIPv4('127.0.0.1/24'); // returns false
+     * net.isIPv4('fhqwhgads'); // returns false
+     * ```
+     * @since v0.3.0
+     */
+    function isIPv4(input: string): boolean;
+    /**
+     * Returns `true` if `input` is an IPv6 address. Otherwise, returns `false`.
+     *
+     * ```js
+     * net.isIPv6('::1'); // returns true
+     * net.isIPv6('fhqwhgads'); // returns false
+     * ```
+     * @since v0.3.0
+     */
+    function isIPv6(input: string): boolean;
+    interface SocketAddressInitOptions {
+        /**
+         * The network address as either an IPv4 or IPv6 string.
+         * @default 127.0.0.1
+         */
+        address?: string | undefined;
+        /**
+         * @default `'ipv4'`
+         */
+        family?: IPVersion | undefined;
+        /**
+         * An IPv6 flow-label used only if `family` is `'ipv6'`.
+         * @default 0
+         */
+        flowlabel?: number | undefined;
+        /**
+         * An IP port.
+         * @default 0
+         */
+        port?: number | undefined;
+    }
+    /**
+     * @since v15.14.0, v14.18.0
+     */
+    class SocketAddress {
+        constructor(options: SocketAddressInitOptions);
+        /**
+         * Either \`'ipv4'\` or \`'ipv6'\`.
+         * @since v15.14.0, v14.18.0
+         */
+        readonly address: string;
+        /**
+         * Either \`'ipv4'\` or \`'ipv6'\`.
+         * @since v15.14.0, v14.18.0
+         */
+        readonly family: IPVersion;
+        /**
+         * @since v15.14.0, v14.18.0
+         */
+        readonly port: number;
+        /**
+         * @since v15.14.0, v14.18.0
+         */
+        readonly flowlabel: number;
+    }
+}
+declare module 'node:net' {
+    export * from 'net';
+}
diff --git a/igv_component/node_modules/@types/node/os.d.ts b/igv_component/node_modules/@types/node/os.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..3c555992ddf058543bbe88d95362dca13b08ad48
--- /dev/null
+++ b/igv_component/node_modules/@types/node/os.d.ts
@@ -0,0 +1,466 @@
+/**
+ * The `os` module provides operating system-related utility methods and
+ * properties. It can be accessed using:
+ *
+ * ```js
+ * const os = require('os');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/os.js)
+ */
+declare module 'os' {
+    interface CpuInfo {
+        model: string;
+        speed: number;
+        times: {
+            user: number;
+            nice: number;
+            sys: number;
+            idle: number;
+            irq: number;
+        };
+    }
+    interface NetworkInterfaceBase {
+        address: string;
+        netmask: string;
+        mac: string;
+        internal: boolean;
+        cidr: string | null;
+    }
+    interface NetworkInterfaceInfoIPv4 extends NetworkInterfaceBase {
+        family: 'IPv4';
+        scopeid?: undefined;
+    }
+    interface NetworkInterfaceInfoIPv6 extends NetworkInterfaceBase {
+        family: 'IPv6';
+        scopeid: number;
+    }
+    interface UserInfo<T> {
+        username: T;
+        uid: number;
+        gid: number;
+        shell: T;
+        homedir: T;
+    }
+    type NetworkInterfaceInfo = NetworkInterfaceInfoIPv4 | NetworkInterfaceInfoIPv6;
+    /**
+     * Returns the host name of the operating system as a string.
+     * @since v0.3.3
+     */
+    function hostname(): string;
+    /**
+     * Returns an array containing the 1, 5, and 15 minute load averages.
+     *
+     * The load average is a measure of system activity calculated by the operating
+     * system and expressed as a fractional number.
+     *
+     * The load average is a Unix-specific concept. On Windows, the return value is
+     * always `[0, 0, 0]`.
+     * @since v0.3.3
+     */
+    function loadavg(): number[];
+    /**
+     * Returns the system uptime in number of seconds.
+     * @since v0.3.3
+     */
+    function uptime(): number;
+    /**
+     * Returns the amount of free system memory in bytes as an integer.
+     * @since v0.3.3
+     */
+    function freemem(): number;
+    /**
+     * Returns the total amount of system memory in bytes as an integer.
+     * @since v0.3.3
+     */
+    function totalmem(): number;
+    /**
+     * Returns an array of objects containing information about each logical CPU core.
+     *
+     * The properties included on each object include:
+     *
+     * ```js
+     * [
+     *   {
+     *     model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
+     *     speed: 2926,
+     *     times: {
+     *       user: 252020,
+     *       nice: 0,
+     *       sys: 30340,
+     *       idle: 1070356870,
+     *       irq: 0
+     *     }
+     *   },
+     *   {
+     *     model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
+     *     speed: 2926,
+     *     times: {
+     *       user: 306960,
+     *       nice: 0,
+     *       sys: 26980,
+     *       idle: 1071569080,
+     *       irq: 0
+     *     }
+     *   },
+     *   {
+     *     model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
+     *     speed: 2926,
+     *     times: {
+     *       user: 248450,
+     *       nice: 0,
+     *       sys: 21750,
+     *       idle: 1070919370,
+     *       irq: 0
+     *     }
+     *   },
+     *   {
+     *     model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
+     *     speed: 2926,
+     *     times: {
+     *       user: 256880,
+     *       nice: 0,
+     *       sys: 19430,
+     *       idle: 1070905480,
+     *       irq: 20
+     *     }
+     *   },
+     * ]
+     * ```
+     *
+     * `nice` values are POSIX-only. On Windows, the `nice` values of all processors
+     * are always 0.
+     * @since v0.3.3
+     */
+    function cpus(): CpuInfo[];
+    /**
+     * Returns the operating system name as returned by [`uname(3)`](https://linux.die.net/man/3/uname). For example, it
+     * returns `'Linux'` on Linux, `'Darwin'` on macOS, and `'Windows_NT'` on Windows.
+     *
+     * See [https://en.wikipedia.org/wiki/Uname#Examples](https://en.wikipedia.org/wiki/Uname#Examples) for additional information
+     * about the output of running [`uname(3)`](https://linux.die.net/man/3/uname) on various operating systems.
+     * @since v0.3.3
+     */
+    function type(): string;
+    /**
+     * Returns the operating system as a string.
+     *
+     * On POSIX systems, the operating system release is determined by calling [`uname(3)`](https://linux.die.net/man/3/uname). On Windows, `GetVersionExW()` is used. See
+     * [https://en.wikipedia.org/wiki/Uname#Examples](https://en.wikipedia.org/wiki/Uname#Examples) for more information.
+     * @since v0.3.3
+     */
+    function release(): string;
+    /**
+     * Returns an object containing network interfaces that have been assigned a
+     * network address.
+     *
+     * Each key on the returned object identifies a network interface. The associated
+     * value is an array of objects that each describe an assigned network address.
+     *
+     * The properties available on the assigned network address object include:
+     *
+     * ```js
+     * {
+     *   lo: [
+     *     {
+     *       address: '127.0.0.1',
+     *       netmask: '255.0.0.0',
+     *       family: 'IPv4',
+     *       mac: '00:00:00:00:00:00',
+     *       internal: true,
+     *       cidr: '127.0.0.1/8'
+     *     },
+     *     {
+     *       address: '::1',
+     *       netmask: 'ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff',
+     *       family: 'IPv6',
+     *       mac: '00:00:00:00:00:00',
+     *       scopeid: 0,
+     *       internal: true,
+     *       cidr: '::1/128'
+     *     }
+     *   ],
+     *   eth0: [
+     *     {
+     *       address: '192.168.1.108',
+     *       netmask: '255.255.255.0',
+     *       family: 'IPv4',
+     *       mac: '01:02:03:0a:0b:0c',
+     *       internal: false,
+     *       cidr: '192.168.1.108/24'
+     *     },
+     *     {
+     *       address: 'fe80::a00:27ff:fe4e:66a1',
+     *       netmask: 'ffff:ffff:ffff:ffff::',
+     *       family: 'IPv6',
+     *       mac: '01:02:03:0a:0b:0c',
+     *       scopeid: 1,
+     *       internal: false,
+     *       cidr: 'fe80::a00:27ff:fe4e:66a1/64'
+     *     }
+     *   ]
+     * }
+     * ```
+     * @since v0.6.0
+     */
+    function networkInterfaces(): NodeJS.Dict<NetworkInterfaceInfo[]>;
+    /**
+     * Returns the string path of the current user's home directory.
+     *
+     * On POSIX, it uses the `$HOME` environment variable if defined. Otherwise it
+     * uses the [effective UID](https://en.wikipedia.org/wiki/User_identifier#Effective_user_ID) to look up the user's home directory.
+     *
+     * On Windows, it uses the `USERPROFILE` environment variable if defined.
+     * Otherwise it uses the path to the profile directory of the current user.
+     * @since v2.3.0
+     */
+    function homedir(): string;
+    /**
+     * Returns information about the currently effective user. On POSIX platforms,
+     * this is typically a subset of the password file. The returned object includes
+     * the `username`, `uid`, `gid`, `shell`, and `homedir`. On Windows, the `uid` and`gid` fields are `-1`, and `shell` is `null`.
+     *
+     * The value of `homedir` returned by `os.userInfo()` is provided by the operating
+     * system. This differs from the result of `os.homedir()`, which queries
+     * environment variables for the home directory before falling back to the
+     * operating system response.
+     *
+     * Throws a `SystemError` if a user has no `username` or `homedir`.
+     * @since v6.0.0
+     */
+    function userInfo(options: { encoding: 'buffer' }): UserInfo<Buffer>;
+    function userInfo(options?: { encoding: BufferEncoding }): UserInfo<string>;
+    type SignalConstants = {
+        [key in NodeJS.Signals]: number;
+    };
+    namespace constants {
+        const UV_UDP_REUSEADDR: number;
+        namespace signals {}
+        const signals: SignalConstants;
+        namespace errno {
+            const E2BIG: number;
+            const EACCES: number;
+            const EADDRINUSE: number;
+            const EADDRNOTAVAIL: number;
+            const EAFNOSUPPORT: number;
+            const EAGAIN: number;
+            const EALREADY: number;
+            const EBADF: number;
+            const EBADMSG: number;
+            const EBUSY: number;
+            const ECANCELED: number;
+            const ECHILD: number;
+            const ECONNABORTED: number;
+            const ECONNREFUSED: number;
+            const ECONNRESET: number;
+            const EDEADLK: number;
+            const EDESTADDRREQ: number;
+            const EDOM: number;
+            const EDQUOT: number;
+            const EEXIST: number;
+            const EFAULT: number;
+            const EFBIG: number;
+            const EHOSTUNREACH: number;
+            const EIDRM: number;
+            const EILSEQ: number;
+            const EINPROGRESS: number;
+            const EINTR: number;
+            const EINVAL: number;
+            const EIO: number;
+            const EISCONN: number;
+            const EISDIR: number;
+            const ELOOP: number;
+            const EMFILE: number;
+            const EMLINK: number;
+            const EMSGSIZE: number;
+            const EMULTIHOP: number;
+            const ENAMETOOLONG: number;
+            const ENETDOWN: number;
+            const ENETRESET: number;
+            const ENETUNREACH: number;
+            const ENFILE: number;
+            const ENOBUFS: number;
+            const ENODATA: number;
+            const ENODEV: number;
+            const ENOENT: number;
+            const ENOEXEC: number;
+            const ENOLCK: number;
+            const ENOLINK: number;
+            const ENOMEM: number;
+            const ENOMSG: number;
+            const ENOPROTOOPT: number;
+            const ENOSPC: number;
+            const ENOSR: number;
+            const ENOSTR: number;
+            const ENOSYS: number;
+            const ENOTCONN: number;
+            const ENOTDIR: number;
+            const ENOTEMPTY: number;
+            const ENOTSOCK: number;
+            const ENOTSUP: number;
+            const ENOTTY: number;
+            const ENXIO: number;
+            const EOPNOTSUPP: number;
+            const EOVERFLOW: number;
+            const EPERM: number;
+            const EPIPE: number;
+            const EPROTO: number;
+            const EPROTONOSUPPORT: number;
+            const EPROTOTYPE: number;
+            const ERANGE: number;
+            const EROFS: number;
+            const ESPIPE: number;
+            const ESRCH: number;
+            const ESTALE: number;
+            const ETIME: number;
+            const ETIMEDOUT: number;
+            const ETXTBSY: number;
+            const EWOULDBLOCK: number;
+            const EXDEV: number;
+            const WSAEINTR: number;
+            const WSAEBADF: number;
+            const WSAEACCES: number;
+            const WSAEFAULT: number;
+            const WSAEINVAL: number;
+            const WSAEMFILE: number;
+            const WSAEWOULDBLOCK: number;
+            const WSAEINPROGRESS: number;
+            const WSAEALREADY: number;
+            const WSAENOTSOCK: number;
+            const WSAEDESTADDRREQ: number;
+            const WSAEMSGSIZE: number;
+            const WSAEPROTOTYPE: number;
+            const WSAENOPROTOOPT: number;
+            const WSAEPROTONOSUPPORT: number;
+            const WSAESOCKTNOSUPPORT: number;
+            const WSAEOPNOTSUPP: number;
+            const WSAEPFNOSUPPORT: number;
+            const WSAEAFNOSUPPORT: number;
+            const WSAEADDRINUSE: number;
+            const WSAEADDRNOTAVAIL: number;
+            const WSAENETDOWN: number;
+            const WSAENETUNREACH: number;
+            const WSAENETRESET: number;
+            const WSAECONNABORTED: number;
+            const WSAECONNRESET: number;
+            const WSAENOBUFS: number;
+            const WSAEISCONN: number;
+            const WSAENOTCONN: number;
+            const WSAESHUTDOWN: number;
+            const WSAETOOMANYREFS: number;
+            const WSAETIMEDOUT: number;
+            const WSAECONNREFUSED: number;
+            const WSAELOOP: number;
+            const WSAENAMETOOLONG: number;
+            const WSAEHOSTDOWN: number;
+            const WSAEHOSTUNREACH: number;
+            const WSAENOTEMPTY: number;
+            const WSAEPROCLIM: number;
+            const WSAEUSERS: number;
+            const WSAEDQUOT: number;
+            const WSAESTALE: number;
+            const WSAEREMOTE: number;
+            const WSASYSNOTREADY: number;
+            const WSAVERNOTSUPPORTED: number;
+            const WSANOTINITIALISED: number;
+            const WSAEDISCON: number;
+            const WSAENOMORE: number;
+            const WSAECANCELLED: number;
+            const WSAEINVALIDPROCTABLE: number;
+            const WSAEINVALIDPROVIDER: number;
+            const WSAEPROVIDERFAILEDINIT: number;
+            const WSASYSCALLFAILURE: number;
+            const WSASERVICE_NOT_FOUND: number;
+            const WSATYPE_NOT_FOUND: number;
+            const WSA_E_NO_MORE: number;
+            const WSA_E_CANCELLED: number;
+            const WSAEREFUSED: number;
+        }
+        namespace priority {
+            const PRIORITY_LOW: number;
+            const PRIORITY_BELOW_NORMAL: number;
+            const PRIORITY_NORMAL: number;
+            const PRIORITY_ABOVE_NORMAL: number;
+            const PRIORITY_HIGH: number;
+            const PRIORITY_HIGHEST: number;
+        }
+    }
+    const devNull: string;
+    const EOL: string;
+    /**
+     * Returns the operating system CPU architecture for which the Node.js binary was
+     * compiled. Possible values are `'arm'`, `'arm64'`, `'ia32'`, `'mips'`,`'mipsel'`, `'ppc'`, `'ppc64'`, `'s390'`, `'s390x'`, and `'x64'`.
+     *
+     * The return value is equivalent to `process.arch`.
+     * @since v0.5.0
+     */
+    function arch(): string;
+    /**
+     * Returns a string identifying the kernel version.
+     *
+     * On POSIX systems, the operating system release is determined by calling [`uname(3)`](https://linux.die.net/man/3/uname). On Windows, `RtlGetVersion()` is used, and if it is not
+     * available, `GetVersionExW()` will be used. See [https://en.wikipedia.org/wiki/Uname#Examples](https://en.wikipedia.org/wiki/Uname#Examples) for more information.
+     * @since v13.11.0, v12.17.0
+     */
+    function version(): string;
+    /**
+     * Returns a string identifying the operating system platform for which
+     * the Node.js binary was compiled. The value is set at compile time.
+     * Possible values are `'aix'`, `'darwin'`, `'freebsd'`,`'linux'`,`'openbsd'`, `'sunos'`, and `'win32'`.
+     *
+     * The return value is equivalent to `process.platform`.
+     *
+     * The value `'android'` may also be returned if Node.js is built on the Android
+     * operating system. [Android support is experimental](https://github.com/nodejs/node/blob/HEAD/BUILDING.md#androidandroid-based-devices-eg-firefox-os).
+     * @since v0.5.0
+     */
+    function platform(): NodeJS.Platform;
+    /**
+     * Returns the machine type as a string, such as arm, aarch64, mips, mips64, ppc64, ppc64le, s390, s390x, i386, i686, x86_64.
+     *
+     * On POSIX systems, the machine type is determined by calling [`uname(3)`](https://linux.die.net/man/3/uname).
+     * On Windows, `RtlGetVersion()` is used, and if it is not available, `GetVersionExW()` will be used.
+     * See [https://en.wikipedia.org/wiki/Uname#Examples](https://en.wikipedia.org/wiki/Uname#Examples) for more information.
+     * @since v18.9.0
+     */
+    function machine(): string;
+    /**
+     * Returns the operating system's default directory for temporary files as a
+     * string.
+     * @since v0.9.9
+     */
+    function tmpdir(): string;
+    /**
+     * Returns a string identifying the endianness of the CPU for which the Node.js
+     * binary was compiled.
+     *
+     * Possible values are `'BE'` for big endian and `'LE'` for little endian.
+     * @since v0.9.4
+     */
+    function endianness(): 'BE' | 'LE';
+    /**
+     * Returns the scheduling priority for the process specified by `pid`. If `pid` is
+     * not provided or is `0`, the priority of the current process is returned.
+     * @since v10.10.0
+     * @param [pid=0] The process ID to retrieve scheduling priority for.
+     */
+    function getPriority(pid?: number): number;
+    /**
+     * Attempts to set the scheduling priority for the process specified by `pid`. If`pid` is not provided or is `0`, the process ID of the current process is used.
+     *
+     * The `priority` input must be an integer between `-20` (high priority) and `19`(low priority). Due to differences between Unix priority levels and Windows
+     * priority classes, `priority` is mapped to one of six priority constants in`os.constants.priority`. When retrieving a process priority level, this range
+     * mapping may cause the return value to be slightly different on Windows. To avoid
+     * confusion, set `priority` to one of the priority constants.
+     *
+     * On Windows, setting priority to `PRIORITY_HIGHEST` requires elevated user
+     * privileges. Otherwise the set priority will be silently reduced to`PRIORITY_HIGH`.
+     * @since v10.10.0
+     * @param [pid=0] The process ID to set scheduling priority for.
+     * @param priority The scheduling priority to assign to the process.
+     */
+    function setPriority(priority: number): void;
+    function setPriority(pid: number, priority: number): void;
+}
+declare module 'node:os' {
+    export * from 'os';
+}
diff --git a/igv_component/node_modules/@types/node/package.json b/igv_component/node_modules/@types/node/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..d6e636f3f2d8c2c662224045a49a030846a1e468
--- /dev/null
+++ b/igv_component/node_modules/@types/node/package.json
@@ -0,0 +1,232 @@
+{
+    "name": "@types/node",
+    "version": "18.7.23",
+    "description": "TypeScript definitions for Node.js",
+    "homepage": "https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/node",
+    "license": "MIT",
+    "contributors": [
+        {
+            "name": "Microsoft TypeScript",
+            "url": "https://github.com/Microsoft",
+            "githubUsername": "Microsoft"
+        },
+        {
+            "name": "DefinitelyTyped",
+            "url": "https://github.com/DefinitelyTyped",
+            "githubUsername": "DefinitelyTyped"
+        },
+        {
+            "name": "Alberto Schiabel",
+            "url": "https://github.com/jkomyno",
+            "githubUsername": "jkomyno"
+        },
+        {
+            "name": "Alvis HT Tang",
+            "url": "https://github.com/alvis",
+            "githubUsername": "alvis"
+        },
+        {
+            "name": "Andrew Makarov",
+            "url": "https://github.com/r3nya",
+            "githubUsername": "r3nya"
+        },
+        {
+            "name": "Benjamin Toueg",
+            "url": "https://github.com/btoueg",
+            "githubUsername": "btoueg"
+        },
+        {
+            "name": "Chigozirim C.",
+            "url": "https://github.com/smac89",
+            "githubUsername": "smac89"
+        },
+        {
+            "name": "David Junger",
+            "url": "https://github.com/touffy",
+            "githubUsername": "touffy"
+        },
+        {
+            "name": "Deividas Bakanas",
+            "url": "https://github.com/DeividasBakanas",
+            "githubUsername": "DeividasBakanas"
+        },
+        {
+            "name": "Eugene Y. Q. Shen",
+            "url": "https://github.com/eyqs",
+            "githubUsername": "eyqs"
+        },
+        {
+            "name": "Hannes Magnusson",
+            "url": "https://github.com/Hannes-Magnusson-CK",
+            "githubUsername": "Hannes-Magnusson-CK"
+        },
+        {
+            "name": "Huw",
+            "url": "https://github.com/hoo29",
+            "githubUsername": "hoo29"
+        },
+        {
+            "name": "Kelvin Jin",
+            "url": "https://github.com/kjin",
+            "githubUsername": "kjin"
+        },
+        {
+            "name": "Klaus Meinhardt",
+            "url": "https://github.com/ajafff",
+            "githubUsername": "ajafff"
+        },
+        {
+            "name": "Lishude",
+            "url": "https://github.com/islishude",
+            "githubUsername": "islishude"
+        },
+        {
+            "name": "Mariusz Wiktorczyk",
+            "url": "https://github.com/mwiktorczyk",
+            "githubUsername": "mwiktorczyk"
+        },
+        {
+            "name": "Mohsen Azimi",
+            "url": "https://github.com/mohsen1",
+            "githubUsername": "mohsen1"
+        },
+        {
+            "name": "Nicolas Even",
+            "url": "https://github.com/n-e",
+            "githubUsername": "n-e"
+        },
+        {
+            "name": "Nikita Galkin",
+            "url": "https://github.com/galkin",
+            "githubUsername": "galkin"
+        },
+        {
+            "name": "Parambir Singh",
+            "url": "https://github.com/parambirs",
+            "githubUsername": "parambirs"
+        },
+        {
+            "name": "Sebastian Silbermann",
+            "url": "https://github.com/eps1lon",
+            "githubUsername": "eps1lon"
+        },
+        {
+            "name": "Simon Schick",
+            "url": "https://github.com/SimonSchick",
+            "githubUsername": "SimonSchick"
+        },
+        {
+            "name": "Thomas den Hollander",
+            "url": "https://github.com/ThomasdenH",
+            "githubUsername": "ThomasdenH"
+        },
+        {
+            "name": "Wilco Bakker",
+            "url": "https://github.com/WilcoBakker",
+            "githubUsername": "WilcoBakker"
+        },
+        {
+            "name": "wwwy3y3",
+            "url": "https://github.com/wwwy3y3",
+            "githubUsername": "wwwy3y3"
+        },
+        {
+            "name": "Samuel Ainsworth",
+            "url": "https://github.com/samuela",
+            "githubUsername": "samuela"
+        },
+        {
+            "name": "Kyle Uehlein",
+            "url": "https://github.com/kuehlein",
+            "githubUsername": "kuehlein"
+        },
+        {
+            "name": "Thanik Bhongbhibhat",
+            "url": "https://github.com/bhongy",
+            "githubUsername": "bhongy"
+        },
+        {
+            "name": "Marcin Kopacz",
+            "url": "https://github.com/chyzwar",
+            "githubUsername": "chyzwar"
+        },
+        {
+            "name": "Trivikram Kamat",
+            "url": "https://github.com/trivikr",
+            "githubUsername": "trivikr"
+        },
+        {
+            "name": "Junxiao Shi",
+            "url": "https://github.com/yoursunny",
+            "githubUsername": "yoursunny"
+        },
+        {
+            "name": "Ilia Baryshnikov",
+            "url": "https://github.com/qwelias",
+            "githubUsername": "qwelias"
+        },
+        {
+            "name": "ExE Boss",
+            "url": "https://github.com/ExE-Boss",
+            "githubUsername": "ExE-Boss"
+        },
+        {
+            "name": "Piotr Błażejewicz",
+            "url": "https://github.com/peterblazejewicz",
+            "githubUsername": "peterblazejewicz"
+        },
+        {
+            "name": "Anna Henningsen",
+            "url": "https://github.com/addaleax",
+            "githubUsername": "addaleax"
+        },
+        {
+            "name": "Victor Perin",
+            "url": "https://github.com/victorperin",
+            "githubUsername": "victorperin"
+        },
+        {
+            "name": "Yongsheng Zhang",
+            "url": "https://github.com/ZYSzys",
+            "githubUsername": "ZYSzys"
+        },
+        {
+            "name": "NodeJS Contributors",
+            "url": "https://github.com/NodeJS",
+            "githubUsername": "NodeJS"
+        },
+        {
+            "name": "Linus Unnebäck",
+            "url": "https://github.com/LinusU",
+            "githubUsername": "LinusU"
+        },
+        {
+            "name": "wafuwafu13",
+            "url": "https://github.com/wafuwafu13",
+            "githubUsername": "wafuwafu13"
+        },
+        {
+            "name": "Matteo Collina",
+            "url": "https://github.com/mcollina",
+            "githubUsername": "mcollina"
+        }
+    ],
+    "main": "",
+    "types": "index.d.ts",
+    "typesVersions": {
+        "<4.9.0-0": {
+            "*": [
+                "ts4.8/*"
+            ]
+        }
+    },
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/DefinitelyTyped/DefinitelyTyped.git",
+        "directory": "types/node"
+    },
+    "scripts": {},
+    "dependencies": {},
+    "typesPublisherContentHash": "24d6e2b547c899309701e1e64ad11f0255c46a6f27da723607d3d1505e43d8da",
+    "typeScriptVersion": "4.1"
+}
\ No newline at end of file
diff --git a/igv_component/node_modules/@types/node/path.d.ts b/igv_component/node_modules/@types/node/path.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2d643b29be92c29f87c46ce6b0558ec431456b9e
--- /dev/null
+++ b/igv_component/node_modules/@types/node/path.d.ts
@@ -0,0 +1,191 @@
+declare module 'path/posix' {
+    import path = require('path');
+    export = path;
+}
+declare module 'path/win32' {
+    import path = require('path');
+    export = path;
+}
+/**
+ * The `path` module provides utilities for working with file and directory paths.
+ * It can be accessed using:
+ *
+ * ```js
+ * const path = require('path');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/path.js)
+ */
+declare module 'path' {
+    namespace path {
+        /**
+         * A parsed path object generated by path.parse() or consumed by path.format().
+         */
+        interface ParsedPath {
+            /**
+             * The root of the path such as '/' or 'c:\'
+             */
+            root: string;
+            /**
+             * The full directory path such as '/home/user/dir' or 'c:\path\dir'
+             */
+            dir: string;
+            /**
+             * The file name including extension (if any) such as 'index.html'
+             */
+            base: string;
+            /**
+             * The file extension (if any) such as '.html'
+             */
+            ext: string;
+            /**
+             * The file name without extension (if any) such as 'index'
+             */
+            name: string;
+        }
+        interface FormatInputPathObject {
+            /**
+             * The root of the path such as '/' or 'c:\'
+             */
+            root?: string | undefined;
+            /**
+             * The full directory path such as '/home/user/dir' or 'c:\path\dir'
+             */
+            dir?: string | undefined;
+            /**
+             * The file name including extension (if any) such as 'index.html'
+             */
+            base?: string | undefined;
+            /**
+             * The file extension (if any) such as '.html'
+             */
+            ext?: string | undefined;
+            /**
+             * The file name without extension (if any) such as 'index'
+             */
+            name?: string | undefined;
+        }
+        interface PlatformPath {
+            /**
+             * Normalize a string path, reducing '..' and '.' parts.
+             * When multiple slashes are found, they're replaced by a single one; when the path contains a trailing slash, it is preserved. On Windows backslashes are used.
+             *
+             * @param path string path to normalize.
+             * @throws {TypeError} if `path` is not a string.
+             */
+            normalize(path: string): string;
+            /**
+             * Join all arguments together and normalize the resulting path.
+             *
+             * @param paths paths to join.
+             * @throws {TypeError} if any of the path segments is not a string.
+             */
+            join(...paths: string[]): string;
+            /**
+             * The right-most parameter is considered {to}. Other parameters are considered an array of {from}.
+             *
+             * Starting from leftmost {from} parameter, resolves {to} to an absolute path.
+             *
+             * If {to} isn't already absolute, {from} arguments are prepended in right to left order,
+             * until an absolute path is found. If after using all {from} paths still no absolute path is found,
+             * the current working directory is used as well. The resulting path is normalized,
+             * and trailing slashes are removed unless the path gets resolved to the root directory.
+             *
+             * @param paths A sequence of paths or path segments.
+             * @throws {TypeError} if any of the arguments is not a string.
+             */
+            resolve(...paths: string[]): string;
+            /**
+             * Determines whether {path} is an absolute path. An absolute path will always resolve to the same location, regardless of the working directory.
+             *
+             * If the given {path} is a zero-length string, `false` will be returned.
+             *
+             * @param path path to test.
+             * @throws {TypeError} if `path` is not a string.
+             */
+            isAbsolute(path: string): boolean;
+            /**
+             * Solve the relative path from {from} to {to} based on the current working directory.
+             * At times we have two absolute paths, and we need to derive the relative path from one to the other. This is actually the reverse transform of path.resolve.
+             *
+             * @throws {TypeError} if either `from` or `to` is not a string.
+             */
+            relative(from: string, to: string): string;
+            /**
+             * Return the directory name of a path. Similar to the Unix dirname command.
+             *
+             * @param path the path to evaluate.
+             * @throws {TypeError} if `path` is not a string.
+             */
+            dirname(path: string): string;
+            /**
+             * Return the last portion of a path. Similar to the Unix basename command.
+             * Often used to extract the file name from a fully qualified path.
+             *
+             * @param path the path to evaluate.
+             * @param ext optionally, an extension to remove from the result.
+             * @throws {TypeError} if `path` is not a string or if `ext` is given and is not a string.
+             */
+            basename(path: string, ext?: string): string;
+            /**
+             * Return the extension of the path, from the last '.' to end of string in the last portion of the path.
+             * If there is no '.' in the last portion of the path or the first character of it is '.', then it returns an empty string.
+             *
+             * @param path the path to evaluate.
+             * @throws {TypeError} if `path` is not a string.
+             */
+            extname(path: string): string;
+            /**
+             * The platform-specific file separator. '\\' or '/'.
+             */
+            readonly sep: '\\' | '/';
+            /**
+             * The platform-specific file delimiter. ';' or ':'.
+             */
+            readonly delimiter: ';' | ':';
+            /**
+             * Returns an object from a path string - the opposite of format().
+             *
+             * @param path path to evaluate.
+             * @throws {TypeError} if `path` is not a string.
+             */
+            parse(path: string): ParsedPath;
+            /**
+             * Returns a path string from an object - the opposite of parse().
+             *
+             * @param pathObject path to evaluate.
+             */
+            format(pathObject: FormatInputPathObject): string;
+            /**
+             * On Windows systems only, returns an equivalent namespace-prefixed path for the given path.
+             * If path is not a string, path will be returned without modifications.
+             * This method is meaningful only on Windows system.
+             * On POSIX systems, the method is non-operational and always returns path without modifications.
+             */
+            toNamespacedPath(path: string): string;
+            /**
+             * Posix specific pathing.
+             * Same as parent object on posix.
+             */
+            readonly posix: PlatformPath;
+            /**
+             * Windows specific pathing.
+             * Same as parent object on windows
+             */
+            readonly win32: PlatformPath;
+        }
+    }
+    const path: path.PlatformPath;
+    export = path;
+}
+declare module 'node:path' {
+    import path = require('path');
+    export = path;
+}
+declare module 'node:path/posix' {
+    import path = require('path/posix');
+    export = path;
+}
+declare module 'node:path/win32' {
+    import path = require('path/win32');
+    export = path;
+}
diff --git a/igv_component/node_modules/@types/node/perf_hooks.d.ts b/igv_component/node_modules/@types/node/perf_hooks.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..cf02a16e7107c94ccc7fb91c0add229ec5f83f8c
--- /dev/null
+++ b/igv_component/node_modules/@types/node/perf_hooks.d.ts
@@ -0,0 +1,610 @@
+/**
+ * This module provides an implementation of a subset of the W3C [Web Performance APIs](https://w3c.github.io/perf-timing-primer/) as well as additional APIs for
+ * Node.js-specific performance measurements.
+ *
+ * Node.js supports the following [Web Performance APIs](https://w3c.github.io/perf-timing-primer/):
+ *
+ * * [High Resolution Time](https://www.w3.org/TR/hr-time-2)
+ * * [Performance Timeline](https://w3c.github.io/performance-timeline/)
+ * * [User Timing](https://www.w3.org/TR/user-timing/)
+ *
+ * ```js
+ * const { PerformanceObserver, performance } = require('perf_hooks');
+ *
+ * const obs = new PerformanceObserver((items) => {
+ *   console.log(items.getEntries()[0].duration);
+ *   performance.clearMarks();
+ * });
+ * obs.observe({ type: 'measure' });
+ * performance.measure('Start to Now');
+ *
+ * performance.mark('A');
+ * doSomeLongRunningProcess(() => {
+ *   performance.measure('A to Now', 'A');
+ *
+ *   performance.mark('B');
+ *   performance.measure('A to B', 'A', 'B');
+ * });
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/perf_hooks.js)
+ */
+declare module 'perf_hooks' {
+    import { AsyncResource } from 'node:async_hooks';
+    type EntryType = 'node' | 'mark' | 'measure' | 'gc' | 'function' | 'http2' | 'http';
+    interface NodeGCPerformanceDetail {
+        /**
+         * When `performanceEntry.entryType` is equal to 'gc', `the performance.kind` property identifies
+         * the type of garbage collection operation that occurred.
+         * See perf_hooks.constants for valid values.
+         */
+        readonly kind?: number | undefined;
+        /**
+         * When `performanceEntry.entryType` is equal to 'gc', the `performance.flags`
+         * property contains additional information about garbage collection operation.
+         * See perf_hooks.constants for valid values.
+         */
+        readonly flags?: number | undefined;
+    }
+    /**
+     * @since v8.5.0
+     */
+    class PerformanceEntry {
+        protected constructor();
+        /**
+         * The total number of milliseconds elapsed for this entry. This value will not
+         * be meaningful for all Performance Entry types.
+         * @since v8.5.0
+         */
+        readonly duration: number;
+        /**
+         * The name of the performance entry.
+         * @since v8.5.0
+         */
+        readonly name: string;
+        /**
+         * The high resolution millisecond timestamp marking the starting time of the
+         * Performance Entry.
+         * @since v8.5.0
+         */
+        readonly startTime: number;
+        /**
+         * The type of the performance entry. It may be one of:
+         *
+         * * `'node'` (Node.js only)
+         * * `'mark'` (available on the Web)
+         * * `'measure'` (available on the Web)
+         * * `'gc'` (Node.js only)
+         * * `'function'` (Node.js only)
+         * * `'http2'` (Node.js only)
+         * * `'http'` (Node.js only)
+         * @since v8.5.0
+         */
+        readonly entryType: EntryType;
+        /**
+         * Additional detail specific to the `entryType`.
+         * @since v16.0.0
+         */
+        readonly detail?: NodeGCPerformanceDetail | unknown | undefined; // TODO: Narrow this based on entry type.
+        toJSON(): any;
+    }
+    class PerformanceMark extends PerformanceEntry {
+        readonly duration: 0;
+        readonly entryType: 'mark';
+    }
+    class PerformanceMeasure extends PerformanceEntry {
+        readonly entryType: 'measure';
+    }
+    /**
+     * _This property is an extension by Node.js. It is not available in Web browsers._
+     *
+     * Provides timing details for Node.js itself. The constructor of this class
+     * is not exposed to users.
+     * @since v8.5.0
+     */
+    class PerformanceNodeTiming extends PerformanceEntry {
+        /**
+         * The high resolution millisecond timestamp at which the Node.js process
+         * completed bootstrapping. If bootstrapping has not yet finished, the property
+         * has the value of -1.
+         * @since v8.5.0
+         */
+        readonly bootstrapComplete: number;
+        /**
+         * The high resolution millisecond timestamp at which the Node.js environment was
+         * initialized.
+         * @since v8.5.0
+         */
+        readonly environment: number;
+        /**
+         * The high resolution millisecond timestamp of the amount of time the event loop
+         * has been idle within the event loop's event provider (e.g. `epoll_wait`). This
+         * does not take CPU usage into consideration. If the event loop has not yet
+         * started (e.g., in the first tick of the main script), the property has the
+         * value of 0.
+         * @since v14.10.0, v12.19.0
+         */
+        readonly idleTime: number;
+        /**
+         * The high resolution millisecond timestamp at which the Node.js event loop
+         * exited. If the event loop has not yet exited, the property has the value of -1\.
+         * It can only have a value of not -1 in a handler of the `'exit'` event.
+         * @since v8.5.0
+         */
+        readonly loopExit: number;
+        /**
+         * The high resolution millisecond timestamp at which the Node.js event loop
+         * started. If the event loop has not yet started (e.g., in the first tick of the
+         * main script), the property has the value of -1.
+         * @since v8.5.0
+         */
+        readonly loopStart: number;
+        /**
+         * The high resolution millisecond timestamp at which the V8 platform was
+         * initialized.
+         * @since v8.5.0
+         */
+        readonly v8Start: number;
+    }
+    interface EventLoopUtilization {
+        idle: number;
+        active: number;
+        utilization: number;
+    }
+    /**
+     * @param util1 The result of a previous call to eventLoopUtilization()
+     * @param util2 The result of a previous call to eventLoopUtilization() prior to util1
+     */
+    type EventLoopUtilityFunction = (util1?: EventLoopUtilization, util2?: EventLoopUtilization) => EventLoopUtilization;
+    interface MarkOptions {
+        /**
+         * Additional optional detail to include with the mark.
+         */
+        detail?: unknown | undefined;
+        /**
+         * An optional timestamp to be used as the mark time.
+         * @default `performance.now()`.
+         */
+        startTime?: number | undefined;
+    }
+    interface MeasureOptions {
+        /**
+         * Additional optional detail to include with the mark.
+         */
+        detail?: unknown | undefined;
+        /**
+         * Duration between start and end times.
+         */
+        duration?: number | undefined;
+        /**
+         * Timestamp to be used as the end time, or a string identifying a previously recorded mark.
+         */
+        end?: number | string | undefined;
+        /**
+         * Timestamp to be used as the start time, or a string identifying a previously recorded mark.
+         */
+        start?: number | string | undefined;
+    }
+    interface TimerifyOptions {
+        /**
+         * A histogram object created using
+         * `perf_hooks.createHistogram()` that will record runtime durations in
+         * nanoseconds.
+         */
+        histogram?: RecordableHistogram | undefined;
+    }
+    interface Performance {
+        /**
+         * If name is not provided, removes all PerformanceMark objects from the Performance Timeline.
+         * If name is provided, removes only the named mark.
+         * @param name
+         */
+        clearMarks(name?: string): void;
+        /**
+         * If name is not provided, removes all PerformanceMeasure objects from the Performance Timeline.
+         * If name is provided, removes only the named measure.
+         * @param name
+         * @since v16.7.0
+         */
+        clearMeasures(name?: string): void;
+        /**
+         * Returns a list of `PerformanceEntry` objects in chronological order with respect to `performanceEntry.startTime`.
+         * If you are only interested in performance entries of certain types or that have certain names, see
+         * `performance.getEntriesByType()` and `performance.getEntriesByName()`.
+         * @since v16.7.0
+         */
+        getEntries(): PerformanceEntry[];
+        /**
+         * Returns a list of `PerformanceEntry` objects in chronological order with respect to `performanceEntry.startTime`
+         * whose `performanceEntry.name` is equal to `name`, and optionally, whose `performanceEntry.entryType` is equal to `type`.
+         * @param name
+         * @param type
+         * @since v16.7.0
+         */
+        getEntriesByName(name: string, type?: EntryType): PerformanceEntry[];
+        /**
+         * Returns a list of `PerformanceEntry` objects in chronological order with respect to `performanceEntry.startTime`
+         * whose `performanceEntry.entryType` is equal to `type`.
+         * @param type
+         * @since v16.7.0
+         */
+        getEntriesByType(type: EntryType): PerformanceEntry[];
+        /**
+         * Creates a new PerformanceMark entry in the Performance Timeline.
+         * A PerformanceMark is a subclass of PerformanceEntry whose performanceEntry.entryType is always 'mark',
+         * and whose performanceEntry.duration is always 0.
+         * Performance marks are used to mark specific significant moments in the Performance Timeline.
+         * @param name
+         * @return The PerformanceMark entry that was created
+         */
+        mark(name?: string, options?: MarkOptions): PerformanceMark;
+        /**
+         * Creates a new PerformanceMeasure entry in the Performance Timeline.
+         * A PerformanceMeasure is a subclass of PerformanceEntry whose performanceEntry.entryType is always 'measure',
+         * and whose performanceEntry.duration measures the number of milliseconds elapsed since startMark and endMark.
+         *
+         * The startMark argument may identify any existing PerformanceMark in the the Performance Timeline, or may identify
+         * any of the timestamp properties provided by the PerformanceNodeTiming class. If the named startMark does not exist,
+         * then startMark is set to timeOrigin by default.
+         *
+         * The endMark argument must identify any existing PerformanceMark in the the Performance Timeline or any of the timestamp
+         * properties provided by the PerformanceNodeTiming class. If the named endMark does not exist, an error will be thrown.
+         * @param name
+         * @param startMark
+         * @param endMark
+         * @return The PerformanceMeasure entry that was created
+         */
+        measure(name: string, startMark?: string, endMark?: string): PerformanceMeasure;
+        measure(name: string, options: MeasureOptions): PerformanceMeasure;
+        /**
+         * An instance of the PerformanceNodeTiming class that provides performance metrics for specific Node.js operational milestones.
+         */
+        readonly nodeTiming: PerformanceNodeTiming;
+        /**
+         * @return the current high resolution millisecond timestamp
+         */
+        now(): number;
+        /**
+         * The timeOrigin specifies the high resolution millisecond timestamp from which all performance metric durations are measured.
+         */
+        readonly timeOrigin: number;
+        /**
+         * Wraps a function within a new function that measures the running time of the wrapped function.
+         * A PerformanceObserver must be subscribed to the 'function' event type in order for the timing details to be accessed.
+         * @param fn
+         */
+        timerify<T extends (...params: any[]) => any>(fn: T, options?: TimerifyOptions): T;
+        /**
+         * eventLoopUtilization is similar to CPU utilization except that it is calculated using high precision wall-clock time.
+         * It represents the percentage of time the event loop has spent outside the event loop's event provider (e.g. epoll_wait).
+         * No other CPU idle time is taken into consideration.
+         */
+        eventLoopUtilization: EventLoopUtilityFunction;
+    }
+    interface PerformanceObserverEntryList {
+        /**
+         * Returns a list of `PerformanceEntry` objects in chronological order
+         * with respect to `performanceEntry.startTime`.
+         *
+         * ```js
+         * const {
+         *   performance,
+         *   PerformanceObserver
+         * } = require('perf_hooks');
+         *
+         * const obs = new PerformanceObserver((perfObserverList, observer) => {
+         *   console.log(perfObserverList.getEntries());
+         *
+         *    * [
+         *    *   PerformanceEntry {
+         *    *     name: 'test',
+         *    *     entryType: 'mark',
+         *    *     startTime: 81.465639,
+         *    *     duration: 0
+         *    *   },
+         *    *   PerformanceEntry {
+         *    *     name: 'meow',
+         *    *     entryType: 'mark',
+         *    *     startTime: 81.860064,
+         *    *     duration: 0
+         *    *   }
+         *    * ]
+         *
+         *
+         *   performance.clearMarks();
+         *   performance.clearMeasures();
+         *   observer.disconnect();
+         * });
+         * obs.observe({ type: 'mark' });
+         *
+         * performance.mark('test');
+         * performance.mark('meow');
+         * ```
+         * @since v8.5.0
+         */
+        getEntries(): PerformanceEntry[];
+        /**
+         * Returns a list of `PerformanceEntry` objects in chronological order
+         * with respect to `performanceEntry.startTime` whose `performanceEntry.name` is
+         * equal to `name`, and optionally, whose `performanceEntry.entryType` is equal to`type`.
+         *
+         * ```js
+         * const {
+         *   performance,
+         *   PerformanceObserver
+         * } = require('perf_hooks');
+         *
+         * const obs = new PerformanceObserver((perfObserverList, observer) => {
+         *   console.log(perfObserverList.getEntriesByName('meow'));
+         *
+         *    * [
+         *    *   PerformanceEntry {
+         *    *     name: 'meow',
+         *    *     entryType: 'mark',
+         *    *     startTime: 98.545991,
+         *    *     duration: 0
+         *    *   }
+         *    * ]
+         *
+         *   console.log(perfObserverList.getEntriesByName('nope')); // []
+         *
+         *   console.log(perfObserverList.getEntriesByName('test', 'mark'));
+         *
+         *    * [
+         *    *   PerformanceEntry {
+         *    *     name: 'test',
+         *    *     entryType: 'mark',
+         *    *     startTime: 63.518931,
+         *    *     duration: 0
+         *    *   }
+         *    * ]
+         *
+         *   console.log(perfObserverList.getEntriesByName('test', 'measure')); // []
+         *
+         *   performance.clearMarks();
+         *   performance.clearMeasures();
+         *   observer.disconnect();
+         * });
+         * obs.observe({ entryTypes: ['mark', 'measure'] });
+         *
+         * performance.mark('test');
+         * performance.mark('meow');
+         * ```
+         * @since v8.5.0
+         */
+        getEntriesByName(name: string, type?: EntryType): PerformanceEntry[];
+        /**
+         * Returns a list of `PerformanceEntry` objects in chronological order
+         * with respect to `performanceEntry.startTime` whose `performanceEntry.entryType`is equal to `type`.
+         *
+         * ```js
+         * const {
+         *   performance,
+         *   PerformanceObserver
+         * } = require('perf_hooks');
+         *
+         * const obs = new PerformanceObserver((perfObserverList, observer) => {
+         *   console.log(perfObserverList.getEntriesByType('mark'));
+         *
+         *    * [
+         *    *   PerformanceEntry {
+         *    *     name: 'test',
+         *    *     entryType: 'mark',
+         *    *     startTime: 55.897834,
+         *    *     duration: 0
+         *    *   },
+         *    *   PerformanceEntry {
+         *    *     name: 'meow',
+         *    *     entryType: 'mark',
+         *    *     startTime: 56.350146,
+         *    *     duration: 0
+         *    *   }
+         *    * ]
+         *
+         *   performance.clearMarks();
+         *   performance.clearMeasures();
+         *   observer.disconnect();
+         * });
+         * obs.observe({ type: 'mark' });
+         *
+         * performance.mark('test');
+         * performance.mark('meow');
+         * ```
+         * @since v8.5.0
+         */
+        getEntriesByType(type: EntryType): PerformanceEntry[];
+    }
+    type PerformanceObserverCallback = (list: PerformanceObserverEntryList, observer: PerformanceObserver) => void;
+    class PerformanceObserver extends AsyncResource {
+        constructor(callback: PerformanceObserverCallback);
+        /**
+         * Disconnects the `PerformanceObserver` instance from all notifications.
+         * @since v8.5.0
+         */
+        disconnect(): void;
+        /**
+         * Subscribes the `PerformanceObserver` instance to notifications of new `PerformanceEntry` instances identified either by `options.entryTypes`or `options.type`:
+         *
+         * ```js
+         * const {
+         *   performance,
+         *   PerformanceObserver
+         * } = require('perf_hooks');
+         *
+         * const obs = new PerformanceObserver((list, observer) => {
+         *   // Called once asynchronously. `list` contains three items.
+         * });
+         * obs.observe({ type: 'mark' });
+         *
+         * for (let n = 0; n < 3; n++)
+         *   performance.mark(`test${n}`);
+         * ```
+         * @since v8.5.0
+         */
+        observe(
+            options:
+                | {
+                      entryTypes: ReadonlyArray<EntryType>;
+                      buffered?: boolean | undefined;
+                  }
+                | {
+                      type: EntryType;
+                      buffered?: boolean | undefined;
+                  }
+        ): void;
+    }
+    namespace constants {
+        const NODE_PERFORMANCE_GC_MAJOR: number;
+        const NODE_PERFORMANCE_GC_MINOR: number;
+        const NODE_PERFORMANCE_GC_INCREMENTAL: number;
+        const NODE_PERFORMANCE_GC_WEAKCB: number;
+        const NODE_PERFORMANCE_GC_FLAGS_NO: number;
+        const NODE_PERFORMANCE_GC_FLAGS_CONSTRUCT_RETAINED: number;
+        const NODE_PERFORMANCE_GC_FLAGS_FORCED: number;
+        const NODE_PERFORMANCE_GC_FLAGS_SYNCHRONOUS_PHANTOM_PROCESSING: number;
+        const NODE_PERFORMANCE_GC_FLAGS_ALL_AVAILABLE_GARBAGE: number;
+        const NODE_PERFORMANCE_GC_FLAGS_ALL_EXTERNAL_MEMORY: number;
+        const NODE_PERFORMANCE_GC_FLAGS_SCHEDULE_IDLE: number;
+    }
+    const performance: Performance;
+    interface EventLoopMonitorOptions {
+        /**
+         * The sampling rate in milliseconds.
+         * Must be greater than zero.
+         * @default 10
+         */
+        resolution?: number | undefined;
+    }
+    interface Histogram {
+        /**
+         * Returns a `Map` object detailing the accumulated percentile distribution.
+         * @since v11.10.0
+         */
+        readonly percentiles: Map<number, number>;
+        /**
+         * The number of times the event loop delay exceeded the maximum 1 hour event
+         * loop delay threshold.
+         * @since v11.10.0
+         */
+        readonly exceeds: number;
+        /**
+         * The minimum recorded event loop delay.
+         * @since v11.10.0
+         */
+        readonly min: number;
+        /**
+         * The maximum recorded event loop delay.
+         * @since v11.10.0
+         */
+        readonly max: number;
+        /**
+         * The mean of the recorded event loop delays.
+         * @since v11.10.0
+         */
+        readonly mean: number;
+        /**
+         * The standard deviation of the recorded event loop delays.
+         * @since v11.10.0
+         */
+        readonly stddev: number;
+        /**
+         * Resets the collected histogram data.
+         * @since v11.10.0
+         */
+        reset(): void;
+        /**
+         * Returns the value at the given percentile.
+         * @since v11.10.0
+         * @param percentile A percentile value in the range (0, 100].
+         */
+        percentile(percentile: number): number;
+    }
+    interface IntervalHistogram extends Histogram {
+        /**
+         * Enables the update interval timer. Returns `true` if the timer was
+         * started, `false` if it was already started.
+         * @since v11.10.0
+         */
+        enable(): boolean;
+        /**
+         * Disables the update interval timer. Returns `true` if the timer was
+         * stopped, `false` if it was already stopped.
+         * @since v11.10.0
+         */
+        disable(): boolean;
+    }
+    interface RecordableHistogram extends Histogram {
+        /**
+         * @since v15.9.0, v14.18.0
+         * @param val The amount to record in the histogram.
+         */
+        record(val: number | bigint): void;
+        /**
+         * Calculates the amount of time (in nanoseconds) that has passed since the
+         * previous call to `recordDelta()` and records that amount in the histogram.
+         *
+         * ## Examples
+         * @since v15.9.0, v14.18.0
+         */
+        recordDelta(): void;
+        /**
+         * Adds the values from other to this histogram.
+         * @since v17.4.0, v16.14.0
+         * @param other Recordable Histogram to combine with
+         */
+         add(other: RecordableHistogram): void;
+    }
+    /**
+     * _This property is an extension by Node.js. It is not available in Web browsers._
+     *
+     * Creates an `IntervalHistogram` object that samples and reports the event loop
+     * delay over time. The delays will be reported in nanoseconds.
+     *
+     * Using a timer to detect approximate event loop delay works because the
+     * execution of timers is tied specifically to the lifecycle of the libuv
+     * event loop. That is, a delay in the loop will cause a delay in the execution
+     * of the timer, and those delays are specifically what this API is intended to
+     * detect.
+     *
+     * ```js
+     * const { monitorEventLoopDelay } = require('perf_hooks');
+     * const h = monitorEventLoopDelay({ resolution: 20 });
+     * h.enable();
+     * // Do something.
+     * h.disable();
+     * console.log(h.min);
+     * console.log(h.max);
+     * console.log(h.mean);
+     * console.log(h.stddev);
+     * console.log(h.percentiles);
+     * console.log(h.percentile(50));
+     * console.log(h.percentile(99));
+     * ```
+     * @since v11.10.0
+     */
+    function monitorEventLoopDelay(options?: EventLoopMonitorOptions): IntervalHistogram;
+    interface CreateHistogramOptions {
+        /**
+         * The minimum recordable value. Must be an integer value greater than 0.
+         * @default 1
+         */
+        min?: number | bigint | undefined;
+        /**
+         * The maximum recordable value. Must be an integer value greater than min.
+         * @default Number.MAX_SAFE_INTEGER
+         */
+        max?: number | bigint | undefined;
+        /**
+         * The number of accuracy digits. Must be a number between 1 and 5.
+         * @default 3
+         */
+        figures?: number | undefined;
+    }
+    /**
+     * Returns a `RecordableHistogram`.
+     * @since v15.9.0, v14.18.0
+     */
+    function createHistogram(options?: CreateHistogramOptions): RecordableHistogram;
+}
+declare module 'node:perf_hooks' {
+    export * from 'perf_hooks';
+}
diff --git a/igv_component/node_modules/@types/node/process.d.ts b/igv_component/node_modules/@types/node/process.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..12148f911b207a631a78c58987f2dbaf7df93dc0
--- /dev/null
+++ b/igv_component/node_modules/@types/node/process.d.ts
@@ -0,0 +1,1482 @@
+declare module 'process' {
+    import * as tty from 'node:tty';
+    import { Worker } from 'node:worker_threads';
+    global {
+        var process: NodeJS.Process;
+        namespace NodeJS {
+            // this namespace merge is here because these are specifically used
+            // as the type for process.stdin, process.stdout, and process.stderr.
+            // they can't live in tty.d.ts because we need to disambiguate the imported name.
+            interface ReadStream extends tty.ReadStream {}
+            interface WriteStream extends tty.WriteStream {}
+            interface MemoryUsageFn {
+                /**
+                 * The `process.memoryUsage()` method iterate over each page to gather informations about memory
+                 * usage which can be slow depending on the program memory allocations.
+                 */
+                (): MemoryUsage;
+                /**
+                 * method returns an integer representing the Resident Set Size (RSS) in bytes.
+                 */
+                rss(): number;
+            }
+            interface MemoryUsage {
+                rss: number;
+                heapTotal: number;
+                heapUsed: number;
+                external: number;
+                arrayBuffers: number;
+            }
+            interface CpuUsage {
+                user: number;
+                system: number;
+            }
+            interface ProcessRelease {
+                name: string;
+                sourceUrl?: string | undefined;
+                headersUrl?: string | undefined;
+                libUrl?: string | undefined;
+                lts?: string | undefined;
+            }
+            interface ProcessVersions extends Dict<string> {
+                http_parser: string;
+                node: string;
+                v8: string;
+                ares: string;
+                uv: string;
+                zlib: string;
+                modules: string;
+                openssl: string;
+            }
+            type Platform = 'aix' | 'android' | 'darwin' | 'freebsd' | 'haiku' | 'linux' | 'openbsd' | 'sunos' | 'win32' | 'cygwin' | 'netbsd';
+            type Architecture = 'arm' | 'arm64' | 'ia32' | 'mips' | 'mipsel' | 'ppc' | 'ppc64' | 's390' | 's390x' | 'x64';
+            type Signals =
+                | 'SIGABRT'
+                | 'SIGALRM'
+                | 'SIGBUS'
+                | 'SIGCHLD'
+                | 'SIGCONT'
+                | 'SIGFPE'
+                | 'SIGHUP'
+                | 'SIGILL'
+                | 'SIGINT'
+                | 'SIGIO'
+                | 'SIGIOT'
+                | 'SIGKILL'
+                | 'SIGPIPE'
+                | 'SIGPOLL'
+                | 'SIGPROF'
+                | 'SIGPWR'
+                | 'SIGQUIT'
+                | 'SIGSEGV'
+                | 'SIGSTKFLT'
+                | 'SIGSTOP'
+                | 'SIGSYS'
+                | 'SIGTERM'
+                | 'SIGTRAP'
+                | 'SIGTSTP'
+                | 'SIGTTIN'
+                | 'SIGTTOU'
+                | 'SIGUNUSED'
+                | 'SIGURG'
+                | 'SIGUSR1'
+                | 'SIGUSR2'
+                | 'SIGVTALRM'
+                | 'SIGWINCH'
+                | 'SIGXCPU'
+                | 'SIGXFSZ'
+                | 'SIGBREAK'
+                | 'SIGLOST'
+                | 'SIGINFO';
+            type UncaughtExceptionOrigin = 'uncaughtException' | 'unhandledRejection';
+            type MultipleResolveType = 'resolve' | 'reject';
+            type BeforeExitListener = (code: number) => void;
+            type DisconnectListener = () => void;
+            type ExitListener = (code: number) => void;
+            type RejectionHandledListener = (promise: Promise<unknown>) => void;
+            type UncaughtExceptionListener = (error: Error, origin: UncaughtExceptionOrigin) => void;
+            /**
+             * Most of the time the unhandledRejection will be an Error, but this should not be relied upon
+             * as *anything* can be thrown/rejected, it is therefore unsafe to assume that the value is an Error.
+             */
+            type UnhandledRejectionListener = (reason: unknown, promise: Promise<unknown>) => void;
+            type WarningListener = (warning: Error) => void;
+            type MessageListener = (message: unknown, sendHandle: unknown) => void;
+            type SignalsListener = (signal: Signals) => void;
+            type MultipleResolveListener = (type: MultipleResolveType, promise: Promise<unknown>, value: unknown) => void;
+            type WorkerListener = (worker: Worker) => void;
+            interface Socket extends ReadWriteStream {
+                isTTY?: true | undefined;
+            }
+            // Alias for compatibility
+            interface ProcessEnv extends Dict<string> {
+                /**
+                 * Can be used to change the default timezone at runtime
+                 */
+                TZ?: string;
+            }
+            interface HRTime {
+                (time?: [number, number]): [number, number];
+                bigint(): bigint;
+            }
+            interface ProcessReport {
+                /**
+                 * Directory where the report is written.
+                 * working directory of the Node.js process.
+                 * @default '' indicating that reports are written to the current
+                 */
+                directory: string;
+                /**
+                 * Filename where the report is written.
+                 * The default value is the empty string.
+                 * @default '' the output filename will be comprised of a timestamp,
+                 * PID, and sequence number.
+                 */
+                filename: string;
+                /**
+                 * Returns a JSON-formatted diagnostic report for the running process.
+                 * The report's JavaScript stack trace is taken from err, if present.
+                 */
+                getReport(err?: Error): string;
+                /**
+                 * If true, a diagnostic report is generated on fatal errors,
+                 * such as out of memory errors or failed C++ assertions.
+                 * @default false
+                 */
+                reportOnFatalError: boolean;
+                /**
+                 * If true, a diagnostic report is generated when the process
+                 * receives the signal specified by process.report.signal.
+                 * @default false
+                 */
+                reportOnSignal: boolean;
+                /**
+                 * If true, a diagnostic report is generated on uncaught exception.
+                 * @default false
+                 */
+                reportOnUncaughtException: boolean;
+                /**
+                 * The signal used to trigger the creation of a diagnostic report.
+                 * @default 'SIGUSR2'
+                 */
+                signal: Signals;
+                /**
+                 * Writes a diagnostic report to a file. If filename is not provided, the default filename
+                 * includes the date, time, PID, and a sequence number.
+                 * The report's JavaScript stack trace is taken from err, if present.
+                 *
+                 * @param fileName Name of the file where the report is written.
+                 * This should be a relative path, that will be appended to the directory specified in
+                 * `process.report.directory`, or the current working directory of the Node.js process,
+                 * if unspecified.
+                 * @param error A custom error used for reporting the JavaScript stack.
+                 * @return Filename of the generated report.
+                 */
+                writeReport(fileName?: string): string;
+                writeReport(error?: Error): string;
+                writeReport(fileName?: string, err?: Error): string;
+            }
+            interface ResourceUsage {
+                fsRead: number;
+                fsWrite: number;
+                involuntaryContextSwitches: number;
+                ipcReceived: number;
+                ipcSent: number;
+                majorPageFault: number;
+                maxRSS: number;
+                minorPageFault: number;
+                sharedMemorySize: number;
+                signalsCount: number;
+                swappedOut: number;
+                systemCPUTime: number;
+                unsharedDataSize: number;
+                unsharedStackSize: number;
+                userCPUTime: number;
+                voluntaryContextSwitches: number;
+            }
+            interface EmitWarningOptions {
+                /**
+                 * When `warning` is a `string`, `type` is the name to use for the _type_ of warning being emitted.
+                 *
+                 * @default 'Warning'
+                 */
+                type?: string | undefined;
+                /**
+                 * A unique identifier for the warning instance being emitted.
+                 */
+                code?: string | undefined;
+                /**
+                 * When `warning` is a `string`, `ctor` is an optional function used to limit the generated stack trace.
+                 *
+                 * @default process.emitWarning
+                 */
+                ctor?: Function | undefined;
+                /**
+                 * Additional text to include with the error.
+                 */
+                detail?: string | undefined;
+            }
+            interface ProcessConfig {
+                readonly target_defaults: {
+                    readonly cflags: any[];
+                    readonly default_configuration: string;
+                    readonly defines: string[];
+                    readonly include_dirs: string[];
+                    readonly libraries: string[];
+                };
+                readonly variables: {
+                    readonly clang: number;
+                    readonly host_arch: string;
+                    readonly node_install_npm: boolean;
+                    readonly node_install_waf: boolean;
+                    readonly node_prefix: string;
+                    readonly node_shared_openssl: boolean;
+                    readonly node_shared_v8: boolean;
+                    readonly node_shared_zlib: boolean;
+                    readonly node_use_dtrace: boolean;
+                    readonly node_use_etw: boolean;
+                    readonly node_use_openssl: boolean;
+                    readonly target_arch: string;
+                    readonly v8_no_strict_aliasing: number;
+                    readonly v8_use_snapshot: boolean;
+                    readonly visibility: string;
+                };
+            }
+            interface Process extends EventEmitter {
+                /**
+                 * The `process.stdout` property returns a stream connected to`stdout` (fd `1`). It is a `net.Socket` (which is a `Duplex` stream) unless fd `1` refers to a file, in which case it is
+                 * a `Writable` stream.
+                 *
+                 * For example, to copy `process.stdin` to `process.stdout`:
+                 *
+                 * ```js
+                 * import { stdin, stdout } from 'process';
+                 *
+                 * stdin.pipe(stdout);
+                 * ```
+                 *
+                 * `process.stdout` differs from other Node.js streams in important ways. See `note on process I/O` for more information.
+                 */
+                stdout: WriteStream & {
+                    fd: 1;
+                };
+                /**
+                 * The `process.stderr` property returns a stream connected to`stderr` (fd `2`). It is a `net.Socket` (which is a `Duplex` stream) unless fd `2` refers to a file, in which case it is
+                 * a `Writable` stream.
+                 *
+                 * `process.stderr` differs from other Node.js streams in important ways. See `note on process I/O` for more information.
+                 */
+                stderr: WriteStream & {
+                    fd: 2;
+                };
+                /**
+                 * The `process.stdin` property returns a stream connected to`stdin` (fd `0`). It is a `net.Socket` (which is a `Duplex` stream) unless fd `0` refers to a file, in which case it is
+                 * a `Readable` stream.
+                 *
+                 * For details of how to read from `stdin` see `readable.read()`.
+                 *
+                 * As a `Duplex` stream, `process.stdin` can also be used in "old" mode that
+                 * is compatible with scripts written for Node.js prior to v0.10\.
+                 * For more information see `Stream compatibility`.
+                 *
+                 * In "old" streams mode the `stdin` stream is paused by default, so one
+                 * must call `process.stdin.resume()` to read from it. Note also that calling`process.stdin.resume()` itself would switch stream to "old" mode.
+                 */
+                stdin: ReadStream & {
+                    fd: 0;
+                };
+                openStdin(): Socket;
+                /**
+                 * The `process.argv` property returns an array containing the command-line
+                 * arguments passed when the Node.js process was launched. The first element will
+                 * be {@link execPath}. See `process.argv0` if access to the original value
+                 * of `argv[0]` is needed. The second element will be the path to the JavaScript
+                 * file being executed. The remaining elements will be any additional command-line
+                 * arguments.
+                 *
+                 * For example, assuming the following script for `process-args.js`:
+                 *
+                 * ```js
+                 * import { argv } from 'process';
+                 *
+                 * // print process.argv
+                 * argv.forEach((val, index) => {
+                 *   console.log(`${index}: ${val}`);
+                 * });
+                 * ```
+                 *
+                 * Launching the Node.js process as:
+                 *
+                 * ```console
+                 * $ node process-args.js one two=three four
+                 * ```
+                 *
+                 * Would generate the output:
+                 *
+                 * ```text
+                 * 0: /usr/local/bin/node
+                 * 1: /Users/mjr/work/node/process-args.js
+                 * 2: one
+                 * 3: two=three
+                 * 4: four
+                 * ```
+                 * @since v0.1.27
+                 */
+                argv: string[];
+                /**
+                 * The `process.argv0` property stores a read-only copy of the original value of`argv[0]` passed when Node.js starts.
+                 *
+                 * ```console
+                 * $ bash -c 'exec -a customArgv0 ./node'
+                 * > process.argv[0]
+                 * '/Volumes/code/external/node/out/Release/node'
+                 * > process.argv0
+                 * 'customArgv0'
+                 * ```
+                 * @since v6.4.0
+                 */
+                argv0: string;
+                /**
+                 * The `process.execArgv` property returns the set of Node.js-specific command-line
+                 * options passed when the Node.js process was launched. These options do not
+                 * appear in the array returned by the {@link argv} property, and do not
+                 * include the Node.js executable, the name of the script, or any options following
+                 * the script name. These options are useful in order to spawn child processes with
+                 * the same execution environment as the parent.
+                 *
+                 * ```console
+                 * $ node --harmony script.js --version
+                 * ```
+                 *
+                 * Results in `process.execArgv`:
+                 *
+                 * ```js
+                 * ['--harmony']
+                 * ```
+                 *
+                 * And `process.argv`:
+                 *
+                 * ```js
+                 * ['/usr/local/bin/node', 'script.js', '--version']
+                 * ```
+                 *
+                 * Refer to `Worker constructor` for the detailed behavior of worker
+                 * threads with this property.
+                 * @since v0.7.7
+                 */
+                execArgv: string[];
+                /**
+                 * The `process.execPath` property returns the absolute pathname of the executable
+                 * that started the Node.js process. Symbolic links, if any, are resolved.
+                 *
+                 * ```js
+                 * '/usr/local/bin/node'
+                 * ```
+                 * @since v0.1.100
+                 */
+                execPath: string;
+                /**
+                 * The `process.abort()` method causes the Node.js process to exit immediately and
+                 * generate a core file.
+                 *
+                 * This feature is not available in `Worker` threads.
+                 * @since v0.7.0
+                 */
+                abort(): never;
+                /**
+                 * The `process.chdir()` method changes the current working directory of the
+                 * Node.js process or throws an exception if doing so fails (for instance, if
+                 * the specified `directory` does not exist).
+                 *
+                 * ```js
+                 * import { chdir, cwd } from 'process';
+                 *
+                 * console.log(`Starting directory: ${cwd()}`);
+                 * try {
+                 *   chdir('/tmp');
+                 *   console.log(`New directory: ${cwd()}`);
+                 * } catch (err) {
+                 *   console.error(`chdir: ${err}`);
+                 * }
+                 * ```
+                 *
+                 * This feature is not available in `Worker` threads.
+                 * @since v0.1.17
+                 */
+                chdir(directory: string): void;
+                /**
+                 * The `process.cwd()` method returns the current working directory of the Node.js
+                 * process.
+                 *
+                 * ```js
+                 * import { cwd } from 'process';
+                 *
+                 * console.log(`Current directory: ${cwd()}`);
+                 * ```
+                 * @since v0.1.8
+                 */
+                cwd(): string;
+                /**
+                 * The port used by the Node.js debugger when enabled.
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * process.debugPort = 5858;
+                 * ```
+                 * @since v0.7.2
+                 */
+                debugPort: number;
+                /**
+                 * The `process.emitWarning()` method can be used to emit custom or application
+                 * specific process warnings. These can be listened for by adding a handler to the `'warning'` event.
+                 *
+                 * ```js
+                 * import { emitWarning } from 'process';
+                 *
+                 * // Emit a warning with a code and additional detail.
+                 * emitWarning('Something happened!', {
+                 *   code: 'MY_WARNING',
+                 *   detail: 'This is some additional information'
+                 * });
+                 * // Emits:
+                 * // (node:56338) [MY_WARNING] Warning: Something happened!
+                 * // This is some additional information
+                 * ```
+                 *
+                 * In this example, an `Error` object is generated internally by`process.emitWarning()` and passed through to the `'warning'` handler.
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * process.on('warning', (warning) => {
+                 *   console.warn(warning.name);    // 'Warning'
+                 *   console.warn(warning.message); // 'Something happened!'
+                 *   console.warn(warning.code);    // 'MY_WARNING'
+                 *   console.warn(warning.stack);   // Stack trace
+                 *   console.warn(warning.detail);  // 'This is some additional information'
+                 * });
+                 * ```
+                 *
+                 * If `warning` is passed as an `Error` object, the `options` argument is ignored.
+                 * @since v8.0.0
+                 * @param warning The warning to emit.
+                 */
+                emitWarning(warning: string | Error, ctor?: Function): void;
+                emitWarning(warning: string | Error, type?: string, ctor?: Function): void;
+                emitWarning(warning: string | Error, type?: string, code?: string, ctor?: Function): void;
+                emitWarning(warning: string | Error, options?: EmitWarningOptions): void;
+                /**
+                 * The `process.env` property returns an object containing the user environment.
+                 * See [`environ(7)`](http://man7.org/linux/man-pages/man7/environ.7.html).
+                 *
+                 * An example of this object looks like:
+                 *
+                 * ```js
+                 * {
+                 *   TERM: 'xterm-256color',
+                 *   SHELL: '/usr/local/bin/bash',
+                 *   USER: 'maciej',
+                 *   PATH: '~/.bin/:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin',
+                 *   PWD: '/Users/maciej',
+                 *   EDITOR: 'vim',
+                 *   SHLVL: '1',
+                 *   HOME: '/Users/maciej',
+                 *   LOGNAME: 'maciej',
+                 *   _: '/usr/local/bin/node'
+                 * }
+                 * ```
+                 *
+                 * It is possible to modify this object, but such modifications will not be
+                 * reflected outside the Node.js process, or (unless explicitly requested)
+                 * to other `Worker` threads.
+                 * In other words, the following example would not work:
+                 *
+                 * ```console
+                 * $ node -e 'process.env.foo = "bar"' &#x26;&#x26; echo $foo
+                 * ```
+                 *
+                 * While the following will:
+                 *
+                 * ```js
+                 * import { env } from 'process';
+                 *
+                 * env.foo = 'bar';
+                 * console.log(env.foo);
+                 * ```
+                 *
+                 * Assigning a property on `process.env` will implicitly convert the value
+                 * to a string. **This behavior is deprecated.** Future versions of Node.js may
+                 * throw an error when the value is not a string, number, or boolean.
+                 *
+                 * ```js
+                 * import { env } from 'process';
+                 *
+                 * env.test = null;
+                 * console.log(env.test);
+                 * // => 'null'
+                 * env.test = undefined;
+                 * console.log(env.test);
+                 * // => 'undefined'
+                 * ```
+                 *
+                 * Use `delete` to delete a property from `process.env`.
+                 *
+                 * ```js
+                 * import { env } from 'process';
+                 *
+                 * env.TEST = 1;
+                 * delete env.TEST;
+                 * console.log(env.TEST);
+                 * // => undefined
+                 * ```
+                 *
+                 * On Windows operating systems, environment variables are case-insensitive.
+                 *
+                 * ```js
+                 * import { env } from 'process';
+                 *
+                 * env.TEST = 1;
+                 * console.log(env.test);
+                 * // => 1
+                 * ```
+                 *
+                 * Unless explicitly specified when creating a `Worker` instance,
+                 * each `Worker` thread has its own copy of `process.env`, based on its
+                 * parent thread’s `process.env`, or whatever was specified as the `env` option
+                 * to the `Worker` constructor. Changes to `process.env` will not be visible
+                 * across `Worker` threads, and only the main thread can make changes that
+                 * are visible to the operating system or to native add-ons.
+                 * @since v0.1.27
+                 */
+                env: ProcessEnv;
+                /**
+                 * The `process.exit()` method instructs Node.js to terminate the process
+                 * synchronously with an exit status of `code`. If `code` is omitted, exit uses
+                 * either the 'success' code `0` or the value of `process.exitCode` if it has been
+                 * set. Node.js will not terminate until all the `'exit'` event listeners are
+                 * called.
+                 *
+                 * To exit with a 'failure' code:
+                 *
+                 * ```js
+                 * import { exit } from 'process';
+                 *
+                 * exit(1);
+                 * ```
+                 *
+                 * The shell that executed Node.js should see the exit code as `1`.
+                 *
+                 * Calling `process.exit()` will force the process to exit as quickly as possible
+                 * even if there are still asynchronous operations pending that have not yet
+                 * completed fully, including I/O operations to `process.stdout` and`process.stderr`.
+                 *
+                 * In most situations, it is not actually necessary to call `process.exit()`explicitly. The Node.js process will exit on its own _if there is no additional_
+                 * _work pending_ in the event loop. The `process.exitCode` property can be set to
+                 * tell the process which exit code to use when the process exits gracefully.
+                 *
+                 * For instance, the following example illustrates a _misuse_ of the`process.exit()` method that could lead to data printed to stdout being
+                 * truncated and lost:
+                 *
+                 * ```js
+                 * import { exit } from 'process';
+                 *
+                 * // This is an example of what *not* to do:
+                 * if (someConditionNotMet()) {
+                 *   printUsageToStdout();
+                 *   exit(1);
+                 * }
+                 * ```
+                 *
+                 * The reason this is problematic is because writes to `process.stdout` in Node.js
+                 * are sometimes _asynchronous_ and may occur over multiple ticks of the Node.js
+                 * event loop. Calling `process.exit()`, however, forces the process to exit _before_ those additional writes to `stdout` can be performed.
+                 *
+                 * Rather than calling `process.exit()` directly, the code _should_ set the`process.exitCode` and allow the process to exit naturally by avoiding
+                 * scheduling any additional work for the event loop:
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * // How to properly set the exit code while letting
+                 * // the process exit gracefully.
+                 * if (someConditionNotMet()) {
+                 *   printUsageToStdout();
+                 *   process.exitCode = 1;
+                 * }
+                 * ```
+                 *
+                 * If it is necessary to terminate the Node.js process due to an error condition,
+                 * throwing an _uncaught_ error and allowing the process to terminate accordingly
+                 * is safer than calling `process.exit()`.
+                 *
+                 * In `Worker` threads, this function stops the current thread rather
+                 * than the current process.
+                 * @since v0.1.13
+                 * @param [code=0] The exit code.
+                 */
+                exit(code?: number): never;
+                /**
+                 * A number which will be the process exit code, when the process either
+                 * exits gracefully, or is exited via {@link exit} without specifying
+                 * a code.
+                 *
+                 * Specifying a code to {@link exit} will override any
+                 * previous setting of `process.exitCode`.
+                 * @since v0.11.8
+                 */
+                exitCode?: number | undefined;
+                /**
+                 * The `process.getgid()` method returns the numerical group identity of the
+                 * process. (See [`getgid(2)`](http://man7.org/linux/man-pages/man2/getgid.2.html).)
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.getgid) {
+                 *   console.log(`Current gid: ${process.getgid()}`);
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * @since v0.1.31
+                 */
+                getgid?: () => number;
+                /**
+                 * The `process.setgid()` method sets the group identity of the process. (See [`setgid(2)`](http://man7.org/linux/man-pages/man2/setgid.2.html).) The `id` can be passed as either a
+                 * numeric ID or a group name
+                 * string. If a group name is specified, this method blocks while resolving the
+                 * associated numeric ID.
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.getgid &#x26;&#x26; process.setgid) {
+                 *   console.log(`Current gid: ${process.getgid()}`);
+                 *   try {
+                 *     process.setgid(501);
+                 *     console.log(`New gid: ${process.getgid()}`);
+                 *   } catch (err) {
+                 *     console.log(`Failed to set gid: ${err}`);
+                 *   }
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * This feature is not available in `Worker` threads.
+                 * @since v0.1.31
+                 * @param id The group name or ID
+                 */
+                setgid?: (id: number | string) => void;
+                /**
+                 * The `process.getuid()` method returns the numeric user identity of the process.
+                 * (See [`getuid(2)`](http://man7.org/linux/man-pages/man2/getuid.2.html).)
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.getuid) {
+                 *   console.log(`Current uid: ${process.getuid()}`);
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * @since v0.1.28
+                 */
+                getuid?: () => number;
+                /**
+                 * The `process.setuid(id)` method sets the user identity of the process. (See [`setuid(2)`](http://man7.org/linux/man-pages/man2/setuid.2.html).) The `id` can be passed as either a
+                 * numeric ID or a username string.
+                 * If a username is specified, the method blocks while resolving the associated
+                 * numeric ID.
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.getuid &#x26;&#x26; process.setuid) {
+                 *   console.log(`Current uid: ${process.getuid()}`);
+                 *   try {
+                 *     process.setuid(501);
+                 *     console.log(`New uid: ${process.getuid()}`);
+                 *   } catch (err) {
+                 *     console.log(`Failed to set uid: ${err}`);
+                 *   }
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * This feature is not available in `Worker` threads.
+                 * @since v0.1.28
+                 */
+                setuid?: (id: number | string) => void;
+                /**
+                 * The `process.geteuid()` method returns the numerical effective user identity of
+                 * the process. (See [`geteuid(2)`](http://man7.org/linux/man-pages/man2/geteuid.2.html).)
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.geteuid) {
+                 *   console.log(`Current uid: ${process.geteuid()}`);
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * @since v2.0.0
+                 */
+                geteuid?: () => number;
+                /**
+                 * The `process.seteuid()` method sets the effective user identity of the process.
+                 * (See [`seteuid(2)`](http://man7.org/linux/man-pages/man2/seteuid.2.html).) The `id` can be passed as either a numeric ID or a username
+                 * string. If a username is specified, the method blocks while resolving the
+                 * associated numeric ID.
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.geteuid &#x26;&#x26; process.seteuid) {
+                 *   console.log(`Current uid: ${process.geteuid()}`);
+                 *   try {
+                 *     process.seteuid(501);
+                 *     console.log(`New uid: ${process.geteuid()}`);
+                 *   } catch (err) {
+                 *     console.log(`Failed to set uid: ${err}`);
+                 *   }
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * This feature is not available in `Worker` threads.
+                 * @since v2.0.0
+                 * @param id A user name or ID
+                 */
+                seteuid?: (id: number | string) => void;
+                /**
+                 * The `process.getegid()` method returns the numerical effective group identity
+                 * of the Node.js process. (See [`getegid(2)`](http://man7.org/linux/man-pages/man2/getegid.2.html).)
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.getegid) {
+                 *   console.log(`Current gid: ${process.getegid()}`);
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * @since v2.0.0
+                 */
+                getegid?: () => number;
+                /**
+                 * The `process.setegid()` method sets the effective group identity of the process.
+                 * (See [`setegid(2)`](http://man7.org/linux/man-pages/man2/setegid.2.html).) The `id` can be passed as either a numeric ID or a group
+                 * name string. If a group name is specified, this method blocks while resolving
+                 * the associated a numeric ID.
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.getegid &#x26;&#x26; process.setegid) {
+                 *   console.log(`Current gid: ${process.getegid()}`);
+                 *   try {
+                 *     process.setegid(501);
+                 *     console.log(`New gid: ${process.getegid()}`);
+                 *   } catch (err) {
+                 *     console.log(`Failed to set gid: ${err}`);
+                 *   }
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * This feature is not available in `Worker` threads.
+                 * @since v2.0.0
+                 * @param id A group name or ID
+                 */
+                setegid?: (id: number | string) => void;
+                /**
+                 * The `process.getgroups()` method returns an array with the supplementary group
+                 * IDs. POSIX leaves it unspecified if the effective group ID is included but
+                 * Node.js ensures it always is.
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.getgroups) {
+                 *   console.log(process.getgroups()); // [ 16, 21, 297 ]
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * @since v0.9.4
+                 */
+                getgroups?: () => number[];
+                /**
+                 * The `process.setgroups()` method sets the supplementary group IDs for the
+                 * Node.js process. This is a privileged operation that requires the Node.js
+                 * process to have `root` or the `CAP_SETGID` capability.
+                 *
+                 * The `groups` array can contain numeric group IDs, group names, or both.
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.getgroups &#x26;&#x26; process.setgroups) {
+                 *   try {
+                 *     process.setgroups([501]);
+                 *     console.log(process.getgroups()); // new groups
+                 *   } catch (err) {
+                 *     console.log(`Failed to set groups: ${err}`);
+                 *   }
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * This feature is not available in `Worker` threads.
+                 * @since v0.9.4
+                 */
+                setgroups?: (groups: ReadonlyArray<string | number>) => void;
+                /**
+                 * The `process.setUncaughtExceptionCaptureCallback()` function sets a function
+                 * that will be invoked when an uncaught exception occurs, which will receive the
+                 * exception value itself as its first argument.
+                 *
+                 * If such a function is set, the `'uncaughtException'` event will
+                 * not be emitted. If `--abort-on-uncaught-exception` was passed from the
+                 * command line or set through `v8.setFlagsFromString()`, the process will
+                 * not abort. Actions configured to take place on exceptions such as report
+                 * generations will be affected too
+                 *
+                 * To unset the capture function,`process.setUncaughtExceptionCaptureCallback(null)` may be used. Calling this
+                 * method with a non-`null` argument while another capture function is set will
+                 * throw an error.
+                 *
+                 * Using this function is mutually exclusive with using the deprecated `domain` built-in module.
+                 * @since v9.3.0
+                 */
+                setUncaughtExceptionCaptureCallback(cb: ((err: Error) => void) | null): void;
+                /**
+                 * Indicates whether a callback has been set using {@link setUncaughtExceptionCaptureCallback}.
+                 * @since v9.3.0
+                 */
+                hasUncaughtExceptionCaptureCallback(): boolean;
+                /**
+                 * The `process.version` property contains the Node.js version string.
+                 *
+                 * ```js
+                 * import { version } from 'process';
+                 *
+                 * console.log(`Version: ${version}`);
+                 * // Version: v14.8.0
+                 * ```
+                 *
+                 * To get the version string without the prepended _v_, use`process.versions.node`.
+                 * @since v0.1.3
+                 */
+                readonly version: string;
+                /**
+                 * The `process.versions` property returns an object listing the version strings of
+                 * Node.js and its dependencies. `process.versions.modules` indicates the current
+                 * ABI version, which is increased whenever a C++ API changes. Node.js will refuse
+                 * to load modules that were compiled against a different module ABI version.
+                 *
+                 * ```js
+                 * import { versions } from 'process';
+                 *
+                 * console.log(versions);
+                 * ```
+                 *
+                 * Will generate an object similar to:
+                 *
+                 * ```console
+                 * { node: '11.13.0',
+                 *   v8: '7.0.276.38-node.18',
+                 *   uv: '1.27.0',
+                 *   zlib: '1.2.11',
+                 *   brotli: '1.0.7',
+                 *   ares: '1.15.0',
+                 *   modules: '67',
+                 *   nghttp2: '1.34.0',
+                 *   napi: '4',
+                 *   llhttp: '1.1.1',
+                 *   openssl: '1.1.1b',
+                 *   cldr: '34.0',
+                 *   icu: '63.1',
+                 *   tz: '2018e',
+                 *   unicode: '11.0' }
+                 * ```
+                 * @since v0.2.0
+                 */
+                readonly versions: ProcessVersions;
+                /**
+                 * The `process.config` property returns an `Object` containing the JavaScript
+                 * representation of the configure options used to compile the current Node.js
+                 * executable. This is the same as the `config.gypi` file that was produced when
+                 * running the `./configure` script.
+                 *
+                 * An example of the possible output looks like:
+                 *
+                 * ```js
+                 * {
+                 *   target_defaults:
+                 *    { cflags: [],
+                 *      default_configuration: 'Release',
+                 *      defines: [],
+                 *      include_dirs: [],
+                 *      libraries: [] },
+                 *   variables:
+                 *    {
+                 *      host_arch: 'x64',
+                 *      napi_build_version: 5,
+                 *      node_install_npm: 'true',
+                 *      node_prefix: '',
+                 *      node_shared_cares: 'false',
+                 *      node_shared_http_parser: 'false',
+                 *      node_shared_libuv: 'false',
+                 *      node_shared_zlib: 'false',
+                 *      node_use_dtrace: 'false',
+                 *      node_use_openssl: 'true',
+                 *      node_shared_openssl: 'false',
+                 *      strict_aliasing: 'true',
+                 *      target_arch: 'x64',
+                 *      v8_use_snapshot: 1
+                 *    }
+                 * }
+                 * ```
+                 *
+                 * The `process.config` property is **not** read-only and there are existing
+                 * modules in the ecosystem that are known to extend, modify, or entirely replace
+                 * the value of `process.config`.
+                 *
+                 * Modifying the `process.config` property, or any child-property of the`process.config` object has been deprecated. The `process.config` will be made
+                 * read-only in a future release.
+                 * @since v0.7.7
+                 */
+                readonly config: ProcessConfig;
+                /**
+                 * The `process.kill()` method sends the `signal` to the process identified by`pid`.
+                 *
+                 * Signal names are strings such as `'SIGINT'` or `'SIGHUP'`. See `Signal Events` and [`kill(2)`](http://man7.org/linux/man-pages/man2/kill.2.html) for more information.
+                 *
+                 * This method will throw an error if the target `pid` does not exist. As a special
+                 * case, a signal of `0` can be used to test for the existence of a process.
+                 * Windows platforms will throw an error if the `pid` is used to kill a process
+                 * group.
+                 *
+                 * Even though the name of this function is `process.kill()`, it is really just a
+                 * signal sender, like the `kill` system call. The signal sent may do something
+                 * other than kill the target process.
+                 *
+                 * ```js
+                 * import process, { kill } from 'process';
+                 *
+                 * process.on('SIGHUP', () => {
+                 *   console.log('Got SIGHUP signal.');
+                 * });
+                 *
+                 * setTimeout(() => {
+                 *   console.log('Exiting.');
+                 *   process.exit(0);
+                 * }, 100);
+                 *
+                 * kill(process.pid, 'SIGHUP');
+                 * ```
+                 *
+                 * When `SIGUSR1` is received by a Node.js process, Node.js will start the
+                 * debugger. See `Signal Events`.
+                 * @since v0.0.6
+                 * @param pid A process ID
+                 * @param [signal='SIGTERM'] The signal to send, either as a string or number.
+                 */
+                kill(pid: number, signal?: string | number): true;
+                /**
+                 * The `process.pid` property returns the PID of the process.
+                 *
+                 * ```js
+                 * import { pid } from 'process';
+                 *
+                 * console.log(`This process is pid ${pid}`);
+                 * ```
+                 * @since v0.1.15
+                 */
+                readonly pid: number;
+                /**
+                 * The `process.ppid` property returns the PID of the parent of the
+                 * current process.
+                 *
+                 * ```js
+                 * import { ppid } from 'process';
+                 *
+                 * console.log(`The parent process is pid ${ppid}`);
+                 * ```
+                 * @since v9.2.0, v8.10.0, v6.13.0
+                 */
+                readonly ppid: number;
+                /**
+                 * The `process.title` property returns the current process title (i.e. returns
+                 * the current value of `ps`). Assigning a new value to `process.title` modifies
+                 * the current value of `ps`.
+                 *
+                 * When a new value is assigned, different platforms will impose different maximum
+                 * length restrictions on the title. Usually such restrictions are quite limited.
+                 * For instance, on Linux and macOS, `process.title` is limited to the size of the
+                 * binary name plus the length of the command-line arguments because setting the`process.title` overwrites the `argv` memory of the process. Node.js v0.8
+                 * allowed for longer process title strings by also overwriting the `environ`memory but that was potentially insecure and confusing in some (rather obscure)
+                 * cases.
+                 *
+                 * Assigning a value to `process.title` might not result in an accurate label
+                 * within process manager applications such as macOS Activity Monitor or Windows
+                 * Services Manager.
+                 * @since v0.1.104
+                 */
+                title: string;
+                /**
+                 * The operating system CPU architecture for which the Node.js binary was compiled.
+                 * Possible values are: `'arm'`, `'arm64'`, `'ia32'`, `'mips'`,`'mipsel'`, `'ppc'`,`'ppc64'`, `'s390'`, `'s390x'`, and `'x64'`.
+                 *
+                 * ```js
+                 * import { arch } from 'process';
+                 *
+                 * console.log(`This processor architecture is ${arch}`);
+                 * ```
+                 * @since v0.5.0
+                 */
+                readonly arch: Architecture;
+                /**
+                 * The `process.platform` property returns a string identifying the operating
+                 * system platform for which the Node.js binary was compiled.
+                 *
+                 * Currently possible values are:
+                 *
+                 * * `'aix'`
+                 * * `'darwin'`
+                 * * `'freebsd'`
+                 * * `'linux'`
+                 * * `'openbsd'`
+                 * * `'sunos'`
+                 * * `'win32'`
+                 *
+                 * ```js
+                 * import { platform } from 'process';
+                 *
+                 * console.log(`This platform is ${platform}`);
+                 * ```
+                 *
+                 * The value `'android'` may also be returned if the Node.js is built on the
+                 * Android operating system. However, Android support in Node.js [is experimental](https://github.com/nodejs/node/blob/HEAD/BUILDING.md#androidandroid-based-devices-eg-firefox-os).
+                 * @since v0.1.16
+                 */
+                readonly platform: Platform;
+                /**
+                 * The `process.mainModule` property provides an alternative way of retrieving `require.main`. The difference is that if the main module changes at
+                 * runtime, `require.main` may still refer to the original main module in
+                 * modules that were required before the change occurred. Generally, it's
+                 * safe to assume that the two refer to the same module.
+                 *
+                 * As with `require.main`, `process.mainModule` will be `undefined` if there
+                 * is no entry script.
+                 * @since v0.1.17
+                 * @deprecated Since v14.0.0 - Use `main` instead.
+                 */
+                mainModule?: Module | undefined;
+                memoryUsage: MemoryUsageFn;
+                /**
+                 * The `process.cpuUsage()` method returns the user and system CPU time usage of
+                 * the current process, in an object with properties `user` and `system`, whose
+                 * values are microsecond values (millionth of a second). These values measure time
+                 * spent in user and system code respectively, and may end up being greater than
+                 * actual elapsed time if multiple CPU cores are performing work for this process.
+                 *
+                 * The result of a previous call to `process.cpuUsage()` can be passed as the
+                 * argument to the function, to get a diff reading.
+                 *
+                 * ```js
+                 * import { cpuUsage } from 'process';
+                 *
+                 * const startUsage = cpuUsage();
+                 * // { user: 38579, system: 6986 }
+                 *
+                 * // spin the CPU for 500 milliseconds
+                 * const now = Date.now();
+                 * while (Date.now() - now < 500);
+                 *
+                 * console.log(cpuUsage(startUsage));
+                 * // { user: 514883, system: 11226 }
+                 * ```
+                 * @since v6.1.0
+                 * @param previousValue A previous return value from calling `process.cpuUsage()`
+                 */
+                cpuUsage(previousValue?: CpuUsage): CpuUsage;
+                /**
+                 * `process.nextTick()` adds `callback` to the "next tick queue". This queue is
+                 * fully drained after the current operation on the JavaScript stack runs to
+                 * completion and before the event loop is allowed to continue. It's possible to
+                 * create an infinite loop if one were to recursively call `process.nextTick()`.
+                 * See the [Event Loop](https://nodejs.org/en/docs/guides/event-loop-timers-and-nexttick/#process-nexttick) guide for more background.
+                 *
+                 * ```js
+                 * import { nextTick } from 'process';
+                 *
+                 * console.log('start');
+                 * nextTick(() => {
+                 *   console.log('nextTick callback');
+                 * });
+                 * console.log('scheduled');
+                 * // Output:
+                 * // start
+                 * // scheduled
+                 * // nextTick callback
+                 * ```
+                 *
+                 * This is important when developing APIs in order to give users the opportunity
+                 * to assign event handlers _after_ an object has been constructed but before any
+                 * I/O has occurred:
+                 *
+                 * ```js
+                 * import { nextTick } from 'process';
+                 *
+                 * function MyThing(options) {
+                 *   this.setupOptions(options);
+                 *
+                 *   nextTick(() => {
+                 *     this.startDoingStuff();
+                 *   });
+                 * }
+                 *
+                 * const thing = new MyThing();
+                 * thing.getReadyForStuff();
+                 *
+                 * // thing.startDoingStuff() gets called now, not before.
+                 * ```
+                 *
+                 * It is very important for APIs to be either 100% synchronous or 100%
+                 * asynchronous. Consider this example:
+                 *
+                 * ```js
+                 * // WARNING!  DO NOT USE!  BAD UNSAFE HAZARD!
+                 * function maybeSync(arg, cb) {
+                 *   if (arg) {
+                 *     cb();
+                 *     return;
+                 *   }
+                 *
+                 *   fs.stat('file', cb);
+                 * }
+                 * ```
+                 *
+                 * This API is hazardous because in the following case:
+                 *
+                 * ```js
+                 * const maybeTrue = Math.random() > 0.5;
+                 *
+                 * maybeSync(maybeTrue, () => {
+                 *   foo();
+                 * });
+                 *
+                 * bar();
+                 * ```
+                 *
+                 * It is not clear whether `foo()` or `bar()` will be called first.
+                 *
+                 * The following approach is much better:
+                 *
+                 * ```js
+                 * import { nextTick } from 'process';
+                 *
+                 * function definitelyAsync(arg, cb) {
+                 *   if (arg) {
+                 *     nextTick(cb);
+                 *     return;
+                 *   }
+                 *
+                 *   fs.stat('file', cb);
+                 * }
+                 * ```
+                 * @since v0.1.26
+                 * @param args Additional arguments to pass when invoking the `callback`
+                 */
+                nextTick(callback: Function, ...args: any[]): void;
+                /**
+                 * The `process.release` property returns an `Object` containing metadata related
+                 * to the current release, including URLs for the source tarball and headers-only
+                 * tarball.
+                 *
+                 * `process.release` contains the following properties:
+                 *
+                 * ```js
+                 * {
+                 *   name: 'node',
+                 *   lts: 'Erbium',
+                 *   sourceUrl: 'https://nodejs.org/download/release/v12.18.1/node-v12.18.1.tar.gz',
+                 *   headersUrl: 'https://nodejs.org/download/release/v12.18.1/node-v12.18.1-headers.tar.gz',
+                 *   libUrl: 'https://nodejs.org/download/release/v12.18.1/win-x64/node.lib'
+                 * }
+                 * ```
+                 *
+                 * In custom builds from non-release versions of the source tree, only the`name` property may be present. The additional properties should not be
+                 * relied upon to exist.
+                 * @since v3.0.0
+                 */
+                readonly release: ProcessRelease;
+                features: {
+                    inspector: boolean;
+                    debug: boolean;
+                    uv: boolean;
+                    ipv6: boolean;
+                    tls_alpn: boolean;
+                    tls_sni: boolean;
+                    tls_ocsp: boolean;
+                    tls: boolean;
+                };
+                /**
+                 * `process.umask()` returns the Node.js process's file mode creation mask. Child
+                 * processes inherit the mask from the parent process.
+                 * @since v0.1.19
+                 * @deprecated Calling `process.umask()` with no argument causes the process-wide umask to be written twice. This introduces a race condition between threads, and is a potential   *
+                 * security vulnerability. There is no safe, cross-platform alternative API.
+                 */
+                umask(): number;
+                /**
+                 * Can only be set if not in worker thread.
+                 */
+                umask(mask: string | number): number;
+                /**
+                 * The `process.uptime()` method returns the number of seconds the current Node.js
+                 * process has been running.
+                 *
+                 * The return value includes fractions of a second. Use `Math.floor()` to get whole
+                 * seconds.
+                 * @since v0.5.0
+                 */
+                uptime(): number;
+                hrtime: HRTime;
+                /**
+                 * If Node.js is spawned with an IPC channel, the `process.send()` method can be
+                 * used to send messages to the parent process. Messages will be received as a `'message'` event on the parent's `ChildProcess` object.
+                 *
+                 * If Node.js was not spawned with an IPC channel, `process.send` will be`undefined`.
+                 *
+                 * The message goes through serialization and parsing. The resulting message might
+                 * not be the same as what is originally sent.
+                 * @since v0.5.9
+                 * @param options used to parameterize the sending of certain types of handles.`options` supports the following properties:
+                 */
+                send?(
+                    message: any,
+                    sendHandle?: any,
+                    options?: {
+                        swallowErrors?: boolean | undefined;
+                    },
+                    callback?: (error: Error | null) => void
+                ): boolean;
+                /**
+                 * If the Node.js process is spawned with an IPC channel (see the `Child Process` and `Cluster` documentation), the `process.disconnect()` method will close the
+                 * IPC channel to the parent process, allowing the child process to exit gracefully
+                 * once there are no other connections keeping it alive.
+                 *
+                 * The effect of calling `process.disconnect()` is the same as calling `ChildProcess.disconnect()` from the parent process.
+                 *
+                 * If the Node.js process was not spawned with an IPC channel,`process.disconnect()` will be `undefined`.
+                 * @since v0.7.2
+                 */
+                disconnect(): void;
+                /**
+                 * If the Node.js process is spawned with an IPC channel (see the `Child Process` and `Cluster` documentation), the `process.connected` property will return`true` so long as the IPC
+                 * channel is connected and will return `false` after`process.disconnect()` is called.
+                 *
+                 * Once `process.connected` is `false`, it is no longer possible to send messages
+                 * over the IPC channel using `process.send()`.
+                 * @since v0.7.2
+                 */
+                connected: boolean;
+                /**
+                 * The `process.allowedNodeEnvironmentFlags` property is a special,
+                 * read-only `Set` of flags allowable within the `NODE_OPTIONS` environment variable.
+                 *
+                 * `process.allowedNodeEnvironmentFlags` extends `Set`, but overrides`Set.prototype.has` to recognize several different possible flag
+                 * representations. `process.allowedNodeEnvironmentFlags.has()` will
+                 * return `true` in the following cases:
+                 *
+                 * * Flags may omit leading single (`-`) or double (`--`) dashes; e.g.,`inspect-brk` for `--inspect-brk`, or `r` for `-r`.
+                 * * Flags passed through to V8 (as listed in `--v8-options`) may replace
+                 * one or more _non-leading_ dashes for an underscore, or vice-versa;
+                 * e.g., `--perf_basic_prof`, `--perf-basic-prof`, `--perf_basic-prof`,
+                 * etc.
+                 * * Flags may contain one or more equals (`=`) characters; all
+                 * characters after and including the first equals will be ignored;
+                 * e.g., `--stack-trace-limit=100`.
+                 * * Flags _must_ be allowable within `NODE_OPTIONS`.
+                 *
+                 * When iterating over `process.allowedNodeEnvironmentFlags`, flags will
+                 * appear only _once_; each will begin with one or more dashes. Flags
+                 * passed through to V8 will contain underscores instead of non-leading
+                 * dashes:
+                 *
+                 * ```js
+                 * import { allowedNodeEnvironmentFlags } from 'process';
+                 *
+                 * allowedNodeEnvironmentFlags.forEach((flag) => {
+                 *   // -r
+                 *   // --inspect-brk
+                 *   // --abort_on_uncaught_exception
+                 *   // ...
+                 * });
+                 * ```
+                 *
+                 * The methods `add()`, `clear()`, and `delete()` of`process.allowedNodeEnvironmentFlags` do nothing, and will fail
+                 * silently.
+                 *
+                 * If Node.js was compiled _without_ `NODE_OPTIONS` support (shown in {@link config}), `process.allowedNodeEnvironmentFlags` will
+                 * contain what _would have_ been allowable.
+                 * @since v10.10.0
+                 */
+                allowedNodeEnvironmentFlags: ReadonlySet<string>;
+                /**
+                 * `process.report` is an object whose methods are used to generate diagnostic
+                 * reports for the current process. Additional documentation is available in the `report documentation`.
+                 * @since v11.8.0
+                 */
+                report?: ProcessReport | undefined;
+                /**
+                 * ```js
+                 * import { resourceUsage } from 'process';
+                 *
+                 * console.log(resourceUsage());
+                 * /*
+                 *   Will output:
+                 *   {
+                 *     userCPUTime: 82872,
+                 *     systemCPUTime: 4143,
+                 *     maxRSS: 33164,
+                 *     sharedMemorySize: 0,
+                 *     unsharedDataSize: 0,
+                 *     unsharedStackSize: 0,
+                 *     minorPageFault: 2469,
+                 *     majorPageFault: 0,
+                 *     swappedOut: 0,
+                 *     fsRead: 0,
+                 *     fsWrite: 8,
+                 *     ipcSent: 0,
+                 *     ipcReceived: 0,
+                 *     signalsCount: 0,
+                 *     voluntaryContextSwitches: 79,
+                 *     involuntaryContextSwitches: 1
+                 *   }
+                 *
+                 * ```
+                 * @since v12.6.0
+                 * @return the resource usage for the current process. All of these values come from the `uv_getrusage` call which returns a [`uv_rusage_t` struct][uv_rusage_t].
+                 */
+                resourceUsage(): ResourceUsage;
+                /**
+                 * The `process.traceDeprecation` property indicates whether the`--trace-deprecation` flag is set on the current Node.js process. See the
+                 * documentation for the `'warning' event` and the `emitWarning() method` for more information about this
+                 * flag's behavior.
+                 * @since v0.8.0
+                 */
+                traceDeprecation: boolean;
+                /* EventEmitter */
+                addListener(event: 'beforeExit', listener: BeforeExitListener): this;
+                addListener(event: 'disconnect', listener: DisconnectListener): this;
+                addListener(event: 'exit', listener: ExitListener): this;
+                addListener(event: 'rejectionHandled', listener: RejectionHandledListener): this;
+                addListener(event: 'uncaughtException', listener: UncaughtExceptionListener): this;
+                addListener(event: 'uncaughtExceptionMonitor', listener: UncaughtExceptionListener): this;
+                addListener(event: 'unhandledRejection', listener: UnhandledRejectionListener): this;
+                addListener(event: 'warning', listener: WarningListener): this;
+                addListener(event: 'message', listener: MessageListener): this;
+                addListener(event: Signals, listener: SignalsListener): this;
+                addListener(event: 'multipleResolves', listener: MultipleResolveListener): this;
+                addListener(event: 'worker', listener: WorkerListener): this;
+                emit(event: 'beforeExit', code: number): boolean;
+                emit(event: 'disconnect'): boolean;
+                emit(event: 'exit', code: number): boolean;
+                emit(event: 'rejectionHandled', promise: Promise<unknown>): boolean;
+                emit(event: 'uncaughtException', error: Error): boolean;
+                emit(event: 'uncaughtExceptionMonitor', error: Error): boolean;
+                emit(event: 'unhandledRejection', reason: unknown, promise: Promise<unknown>): boolean;
+                emit(event: 'warning', warning: Error): boolean;
+                emit(event: 'message', message: unknown, sendHandle: unknown): this;
+                emit(event: Signals, signal?: Signals): boolean;
+                emit(event: 'multipleResolves', type: MultipleResolveType, promise: Promise<unknown>, value: unknown): this;
+                emit(event: 'worker', listener: WorkerListener): this;
+                on(event: 'beforeExit', listener: BeforeExitListener): this;
+                on(event: 'disconnect', listener: DisconnectListener): this;
+                on(event: 'exit', listener: ExitListener): this;
+                on(event: 'rejectionHandled', listener: RejectionHandledListener): this;
+                on(event: 'uncaughtException', listener: UncaughtExceptionListener): this;
+                on(event: 'uncaughtExceptionMonitor', listener: UncaughtExceptionListener): this;
+                on(event: 'unhandledRejection', listener: UnhandledRejectionListener): this;
+                on(event: 'warning', listener: WarningListener): this;
+                on(event: 'message', listener: MessageListener): this;
+                on(event: Signals, listener: SignalsListener): this;
+                on(event: 'multipleResolves', listener: MultipleResolveListener): this;
+                on(event: 'worker', listener: WorkerListener): this;
+                on(event: string | symbol, listener: (...args: any[]) => void): this;
+                once(event: 'beforeExit', listener: BeforeExitListener): this;
+                once(event: 'disconnect', listener: DisconnectListener): this;
+                once(event: 'exit', listener: ExitListener): this;
+                once(event: 'rejectionHandled', listener: RejectionHandledListener): this;
+                once(event: 'uncaughtException', listener: UncaughtExceptionListener): this;
+                once(event: 'uncaughtExceptionMonitor', listener: UncaughtExceptionListener): this;
+                once(event: 'unhandledRejection', listener: UnhandledRejectionListener): this;
+                once(event: 'warning', listener: WarningListener): this;
+                once(event: 'message', listener: MessageListener): this;
+                once(event: Signals, listener: SignalsListener): this;
+                once(event: 'multipleResolves', listener: MultipleResolveListener): this;
+                once(event: 'worker', listener: WorkerListener): this;
+                once(event: string | symbol, listener: (...args: any[]) => void): this;
+                prependListener(event: 'beforeExit', listener: BeforeExitListener): this;
+                prependListener(event: 'disconnect', listener: DisconnectListener): this;
+                prependListener(event: 'exit', listener: ExitListener): this;
+                prependListener(event: 'rejectionHandled', listener: RejectionHandledListener): this;
+                prependListener(event: 'uncaughtException', listener: UncaughtExceptionListener): this;
+                prependListener(event: 'uncaughtExceptionMonitor', listener: UncaughtExceptionListener): this;
+                prependListener(event: 'unhandledRejection', listener: UnhandledRejectionListener): this;
+                prependListener(event: 'warning', listener: WarningListener): this;
+                prependListener(event: 'message', listener: MessageListener): this;
+                prependListener(event: Signals, listener: SignalsListener): this;
+                prependListener(event: 'multipleResolves', listener: MultipleResolveListener): this;
+                prependListener(event: 'worker', listener: WorkerListener): this;
+                prependOnceListener(event: 'beforeExit', listener: BeforeExitListener): this;
+                prependOnceListener(event: 'disconnect', listener: DisconnectListener): this;
+                prependOnceListener(event: 'exit', listener: ExitListener): this;
+                prependOnceListener(event: 'rejectionHandled', listener: RejectionHandledListener): this;
+                prependOnceListener(event: 'uncaughtException', listener: UncaughtExceptionListener): this;
+                prependOnceListener(event: 'uncaughtExceptionMonitor', listener: UncaughtExceptionListener): this;
+                prependOnceListener(event: 'unhandledRejection', listener: UnhandledRejectionListener): this;
+                prependOnceListener(event: 'warning', listener: WarningListener): this;
+                prependOnceListener(event: 'message', listener: MessageListener): this;
+                prependOnceListener(event: Signals, listener: SignalsListener): this;
+                prependOnceListener(event: 'multipleResolves', listener: MultipleResolveListener): this;
+                prependOnceListener(event: 'worker', listener: WorkerListener): this;
+                listeners(event: 'beforeExit'): BeforeExitListener[];
+                listeners(event: 'disconnect'): DisconnectListener[];
+                listeners(event: 'exit'): ExitListener[];
+                listeners(event: 'rejectionHandled'): RejectionHandledListener[];
+                listeners(event: 'uncaughtException'): UncaughtExceptionListener[];
+                listeners(event: 'uncaughtExceptionMonitor'): UncaughtExceptionListener[];
+                listeners(event: 'unhandledRejection'): UnhandledRejectionListener[];
+                listeners(event: 'warning'): WarningListener[];
+                listeners(event: 'message'): MessageListener[];
+                listeners(event: Signals): SignalsListener[];
+                listeners(event: 'multipleResolves'): MultipleResolveListener[];
+                listeners(event: 'worker'): WorkerListener[];
+            }
+        }
+    }
+    export = process;
+}
+declare module 'node:process' {
+    import process = require('process');
+    export = process;
+}
diff --git a/igv_component/node_modules/@types/node/punycode.d.ts b/igv_component/node_modules/@types/node/punycode.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..87ebbb90483aef0b987fb4c22d78031113fed576
--- /dev/null
+++ b/igv_component/node_modules/@types/node/punycode.d.ts
@@ -0,0 +1,117 @@
+/**
+ * **The version of the punycode module bundled in Node.js is being deprecated.**In a future major version of Node.js this module will be removed. Users
+ * currently depending on the `punycode` module should switch to using the
+ * userland-provided [Punycode.js](https://github.com/bestiejs/punycode.js) module instead. For punycode-based URL
+ * encoding, see `url.domainToASCII` or, more generally, the `WHATWG URL API`.
+ *
+ * The `punycode` module is a bundled version of the [Punycode.js](https://github.com/bestiejs/punycode.js) module. It
+ * can be accessed using:
+ *
+ * ```js
+ * const punycode = require('punycode');
+ * ```
+ *
+ * [Punycode](https://tools.ietf.org/html/rfc3492) is a character encoding scheme defined by RFC 3492 that is
+ * primarily intended for use in Internationalized Domain Names. Because host
+ * names in URLs are limited to ASCII characters only, Domain Names that contain
+ * non-ASCII characters must be converted into ASCII using the Punycode scheme.
+ * For instance, the Japanese character that translates into the English word,`'example'` is `'例'`. The Internationalized Domain Name, `'例.com'` (equivalent
+ * to `'example.com'`) is represented by Punycode as the ASCII string`'xn--fsq.com'`.
+ *
+ * The `punycode` module provides a simple implementation of the Punycode standard.
+ *
+ * The `punycode` module is a third-party dependency used by Node.js and
+ * made available to developers as a convenience. Fixes or other modifications to
+ * the module must be directed to the [Punycode.js](https://github.com/bestiejs/punycode.js) project.
+ * @deprecated Since v7.0.0 - Deprecated
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/punycode.js)
+ */
+declare module 'punycode' {
+    /**
+     * The `punycode.decode()` method converts a [Punycode](https://tools.ietf.org/html/rfc3492) string of ASCII-only
+     * characters to the equivalent string of Unicode codepoints.
+     *
+     * ```js
+     * punycode.decode('maana-pta'); // 'mañana'
+     * punycode.decode('--dqo34k'); // '☃-⌘'
+     * ```
+     * @since v0.5.1
+     */
+    function decode(string: string): string;
+    /**
+     * The `punycode.encode()` method converts a string of Unicode codepoints to a [Punycode](https://tools.ietf.org/html/rfc3492) string of ASCII-only characters.
+     *
+     * ```js
+     * punycode.encode('mañana'); // 'maana-pta'
+     * punycode.encode('☃-⌘'); // '--dqo34k'
+     * ```
+     * @since v0.5.1
+     */
+    function encode(string: string): string;
+    /**
+     * The `punycode.toUnicode()` method converts a string representing a domain name
+     * containing [Punycode](https://tools.ietf.org/html/rfc3492) encoded characters into Unicode. Only the [Punycode](https://tools.ietf.org/html/rfc3492) encoded parts of the domain name are be
+     * converted.
+     *
+     * ```js
+     * // decode domain names
+     * punycode.toUnicode('xn--maana-pta.com'); // 'mañana.com'
+     * punycode.toUnicode('xn----dqo34k.com');  // '☃-⌘.com'
+     * punycode.toUnicode('example.com');       // 'example.com'
+     * ```
+     * @since v0.6.1
+     */
+    function toUnicode(domain: string): string;
+    /**
+     * The `punycode.toASCII()` method converts a Unicode string representing an
+     * Internationalized Domain Name to [Punycode](https://tools.ietf.org/html/rfc3492). Only the non-ASCII parts of the
+     * domain name will be converted. Calling `punycode.toASCII()` on a string that
+     * already only contains ASCII characters will have no effect.
+     *
+     * ```js
+     * // encode domain names
+     * punycode.toASCII('mañana.com');  // 'xn--maana-pta.com'
+     * punycode.toASCII('☃-⌘.com');   // 'xn----dqo34k.com'
+     * punycode.toASCII('example.com'); // 'example.com'
+     * ```
+     * @since v0.6.1
+     */
+    function toASCII(domain: string): string;
+    /**
+     * @deprecated since v7.0.0
+     * The version of the punycode module bundled in Node.js is being deprecated.
+     * In a future major version of Node.js this module will be removed.
+     * Users currently depending on the punycode module should switch to using
+     * the userland-provided Punycode.js module instead.
+     */
+    const ucs2: ucs2;
+    interface ucs2 {
+        /**
+         * @deprecated since v7.0.0
+         * The version of the punycode module bundled in Node.js is being deprecated.
+         * In a future major version of Node.js this module will be removed.
+         * Users currently depending on the punycode module should switch to using
+         * the userland-provided Punycode.js module instead.
+         */
+        decode(string: string): number[];
+        /**
+         * @deprecated since v7.0.0
+         * The version of the punycode module bundled in Node.js is being deprecated.
+         * In a future major version of Node.js this module will be removed.
+         * Users currently depending on the punycode module should switch to using
+         * the userland-provided Punycode.js module instead.
+         */
+        encode(codePoints: ReadonlyArray<number>): string;
+    }
+    /**
+     * @deprecated since v7.0.0
+     * The version of the punycode module bundled in Node.js is being deprecated.
+     * In a future major version of Node.js this module will be removed.
+     * Users currently depending on the punycode module should switch to using
+     * the userland-provided Punycode.js module instead.
+     */
+    const version: string;
+}
+declare module 'node:punycode' {
+    export * from 'punycode';
+}
diff --git a/igv_component/node_modules/@types/node/querystring.d.ts b/igv_component/node_modules/@types/node/querystring.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e694d8c849c68eeec93234e1faad051d22b21957
--- /dev/null
+++ b/igv_component/node_modules/@types/node/querystring.d.ts
@@ -0,0 +1,131 @@
+/**
+ * The `querystring` module provides utilities for parsing and formatting URL
+ * query strings. It can be accessed using:
+ *
+ * ```js
+ * const querystring = require('querystring');
+ * ```
+ *
+ * The `querystring` API is considered Legacy. While it is still maintained,
+ * new code should use the `URLSearchParams` API instead.
+ * @deprecated Legacy
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/querystring.js)
+ */
+declare module 'querystring' {
+    interface StringifyOptions {
+        encodeURIComponent?: ((str: string) => string) | undefined;
+    }
+    interface ParseOptions {
+        maxKeys?: number | undefined;
+        decodeURIComponent?: ((str: string) => string) | undefined;
+    }
+    interface ParsedUrlQuery extends NodeJS.Dict<string | string[]> {}
+    interface ParsedUrlQueryInput extends NodeJS.Dict<string | number | boolean | ReadonlyArray<string> | ReadonlyArray<number> | ReadonlyArray<boolean> | null> {}
+    /**
+     * The `querystring.stringify()` method produces a URL query string from a
+     * given `obj` by iterating through the object's "own properties".
+     *
+     * It serializes the following types of values passed in `obj`:[string](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) |
+     * [number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type) |
+     * [bigint](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt) |
+     * [boolean](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type) |
+     * [string\[\]](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) |
+     * [number\[\]](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type) |
+     * [bigint\[\]](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt) |
+     * [boolean\[\]](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type) The numeric values must be finite. Any other input values will be coerced to
+     * empty strings.
+     *
+     * ```js
+     * querystring.stringify({ foo: 'bar', baz: ['qux', 'quux'], corge: '' });
+     * // Returns 'foo=bar&#x26;baz=qux&#x26;baz=quux&#x26;corge='
+     *
+     * querystring.stringify({ foo: 'bar', baz: 'qux' }, ';', ':');
+     * // Returns 'foo:bar;baz:qux'
+     * ```
+     *
+     * By default, characters requiring percent-encoding within the query string will
+     * be encoded as UTF-8\. If an alternative encoding is required, then an alternative`encodeURIComponent` option will need to be specified:
+     *
+     * ```js
+     * // Assuming gbkEncodeURIComponent function already exists,
+     *
+     * querystring.stringify({ w: '中文', foo: 'bar' }, null, null,
+     *                       { encodeURIComponent: gbkEncodeURIComponent });
+     * ```
+     * @since v0.1.25
+     * @param obj The object to serialize into a URL query string
+     * @param [sep='&'] The substring used to delimit key and value pairs in the query string.
+     * @param [eq='='] . The substring used to delimit keys and values in the query string.
+     */
+    function stringify(obj?: ParsedUrlQueryInput, sep?: string, eq?: string, options?: StringifyOptions): string;
+    /**
+     * The `querystring.parse()` method parses a URL query string (`str`) into a
+     * collection of key and value pairs.
+     *
+     * For example, the query string `'foo=bar&#x26;abc=xyz&#x26;abc=123'` is parsed into:
+     *
+     * ```js
+     * {
+     *   foo: 'bar',
+     *   abc: ['xyz', '123']
+     * }
+     * ```
+     *
+     * The object returned by the `querystring.parse()` method _does not_prototypically inherit from the JavaScript `Object`. This means that typical`Object` methods such as `obj.toString()`,
+     * `obj.hasOwnProperty()`, and others
+     * are not defined and _will not work_.
+     *
+     * By default, percent-encoded characters within the query string will be assumed
+     * to use UTF-8 encoding. If an alternative character encoding is used, then an
+     * alternative `decodeURIComponent` option will need to be specified:
+     *
+     * ```js
+     * // Assuming gbkDecodeURIComponent function already exists...
+     *
+     * querystring.parse('w=%D6%D0%CE%C4&#x26;foo=bar', null, null,
+     *                   { decodeURIComponent: gbkDecodeURIComponent });
+     * ```
+     * @since v0.1.25
+     * @param str The URL query string to parse
+     * @param [sep='&'] The substring used to delimit key and value pairs in the query string.
+     * @param [eq='='] . The substring used to delimit keys and values in the query string.
+     */
+    function parse(str: string, sep?: string, eq?: string, options?: ParseOptions): ParsedUrlQuery;
+    /**
+     * The querystring.encode() function is an alias for querystring.stringify().
+     */
+    const encode: typeof stringify;
+    /**
+     * The querystring.decode() function is an alias for querystring.parse().
+     */
+    const decode: typeof parse;
+    /**
+     * The `querystring.escape()` method performs URL percent-encoding on the given`str` in a manner that is optimized for the specific requirements of URL
+     * query strings.
+     *
+     * The `querystring.escape()` method is used by `querystring.stringify()` and is
+     * generally not expected to be used directly. It is exported primarily to allow
+     * application code to provide a replacement percent-encoding implementation if
+     * necessary by assigning `querystring.escape` to an alternative function.
+     * @since v0.1.25
+     */
+    function escape(str: string): string;
+    /**
+     * The `querystring.unescape()` method performs decoding of URL percent-encoded
+     * characters on the given `str`.
+     *
+     * The `querystring.unescape()` method is used by `querystring.parse()` and is
+     * generally not expected to be used directly. It is exported primarily to allow
+     * application code to provide a replacement decoding implementation if
+     * necessary by assigning `querystring.unescape` to an alternative function.
+     *
+     * By default, the `querystring.unescape()` method will attempt to use the
+     * JavaScript built-in `decodeURIComponent()` method to decode. If that fails,
+     * a safer equivalent that does not throw on malformed URLs will be used.
+     * @since v0.1.25
+     */
+    function unescape(str: string): string;
+}
+declare module 'node:querystring' {
+    export * from 'querystring';
+}
diff --git a/igv_component/node_modules/@types/node/readline.d.ts b/igv_component/node_modules/@types/node/readline.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6ab64acbbec10680e4c519598e84b9c64bd97984
--- /dev/null
+++ b/igv_component/node_modules/@types/node/readline.d.ts
@@ -0,0 +1,653 @@
+/**
+ * The `readline` module provides an interface for reading data from a `Readable` stream (such as `process.stdin`) one line at a time.
+ *
+ * To use the promise-based APIs:
+ *
+ * ```js
+ * import * as readline from 'node:readline/promises';
+ * ```
+ *
+ * To use the callback and sync APIs:
+ *
+ * ```js
+ * import * as readline from 'node:readline';
+ * ```
+ *
+ * The following simple example illustrates the basic use of the `readline` module.
+ *
+ * ```js
+ * import * as readline from 'node:readline/promises';
+ * import { stdin as input, stdout as output } from 'node:process';
+ *
+ * const rl = readline.createInterface({ input, output });
+ *
+ * const answer = await rl.question('What do you think of Node.js? ');
+ *
+ * console.log(`Thank you for your valuable feedback: ${answer}`);
+ *
+ * rl.close();
+ * ```
+ *
+ * Once this code is invoked, the Node.js application will not terminate until the`readline.Interface` is closed because the interface waits for data to be
+ * received on the `input` stream.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/readline.js)
+ */
+declare module 'readline' {
+    import { Abortable, EventEmitter } from 'node:events';
+    import * as promises from 'node:readline/promises';
+
+    export { promises };
+    export interface Key {
+        sequence?: string | undefined;
+        name?: string | undefined;
+        ctrl?: boolean | undefined;
+        meta?: boolean | undefined;
+        shift?: boolean | undefined;
+    }
+    /**
+     * Instances of the `readline.Interface` class are constructed using the`readline.createInterface()` method. Every instance is associated with a
+     * single `input` `Readable` stream and a single `output` `Writable` stream.
+     * The `output` stream is used to print prompts for user input that arrives on,
+     * and is read from, the `input` stream.
+     * @since v0.1.104
+     */
+    export class Interface extends EventEmitter {
+        readonly terminal: boolean;
+        /**
+         * The current input data being processed by node.
+         *
+         * This can be used when collecting input from a TTY stream to retrieve the
+         * current value that has been processed thus far, prior to the `line` event
+         * being emitted. Once the `line` event has been emitted, this property will
+         * be an empty string.
+         *
+         * Be aware that modifying the value during the instance runtime may have
+         * unintended consequences if `rl.cursor` is not also controlled.
+         *
+         * **If not using a TTY stream for input, use the `'line'` event.**
+         *
+         * One possible use case would be as follows:
+         *
+         * ```js
+         * const values = ['lorem ipsum', 'dolor sit amet'];
+         * const rl = readline.createInterface(process.stdin);
+         * const showResults = debounce(() => {
+         *   console.log(
+         *     '\n',
+         *     values.filter((val) => val.startsWith(rl.line)).join(' ')
+         *   );
+         * }, 300);
+         * process.stdin.on('keypress', (c, k) => {
+         *   showResults();
+         * });
+         * ```
+         * @since v0.1.98
+         */
+        readonly line: string;
+        /**
+         * The cursor position relative to `rl.line`.
+         *
+         * This will track where the current cursor lands in the input string, when
+         * reading input from a TTY stream. The position of cursor determines the
+         * portion of the input string that will be modified as input is processed,
+         * as well as the column where the terminal caret will be rendered.
+         * @since v0.1.98
+         */
+        readonly cursor: number;
+        /**
+         * NOTE: According to the documentation:
+         *
+         * > Instances of the `readline.Interface` class are constructed using the
+         * > `readline.createInterface()` method.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/readline.html#readline_class_interface
+         */
+        protected constructor(input: NodeJS.ReadableStream, output?: NodeJS.WritableStream, completer?: Completer | AsyncCompleter, terminal?: boolean);
+        /**
+         * NOTE: According to the documentation:
+         *
+         * > Instances of the `readline.Interface` class are constructed using the
+         * > `readline.createInterface()` method.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/readline.html#readline_class_interface
+         */
+        protected constructor(options: ReadLineOptions);
+        /**
+         * The `rl.getPrompt()` method returns the current prompt used by `rl.prompt()`.
+         * @since v15.3.0
+         * @return the current prompt string
+         */
+        getPrompt(): string;
+        /**
+         * The `rl.setPrompt()` method sets the prompt that will be written to `output`whenever `rl.prompt()` is called.
+         * @since v0.1.98
+         */
+        setPrompt(prompt: string): void;
+        /**
+         * The `rl.prompt()` method writes the `readline.Interface` instances configured`prompt` to a new line in `output` in order to provide a user with a new
+         * location at which to provide input.
+         *
+         * When called, `rl.prompt()` will resume the `input` stream if it has been
+         * paused.
+         *
+         * If the `readline.Interface` was created with `output` set to `null` or`undefined` the prompt is not written.
+         * @since v0.1.98
+         * @param preserveCursor If `true`, prevents the cursor placement from being reset to `0`.
+         */
+        prompt(preserveCursor?: boolean): void;
+        /**
+         * The `rl.question()` method displays the `query` by writing it to the `output`,
+         * waits for user input to be provided on `input`, then invokes the `callback`function passing the provided input as the first argument.
+         *
+         * When called, `rl.question()` will resume the `input` stream if it has been
+         * paused.
+         *
+         * If the `readline.Interface` was created with `output` set to `null` or`undefined` the `query` is not written.
+         *
+         * The `callback` function passed to `rl.question()` does not follow the typical
+         * pattern of accepting an `Error` object or `null` as the first argument.
+         * The `callback` is called with the provided answer as the only argument.
+         *
+         * Example usage:
+         *
+         * ```js
+         * rl.question('What is your favorite food? ', (answer) => {
+         *   console.log(`Oh, so your favorite food is ${answer}`);
+         * });
+         * ```
+         *
+         * Using an `AbortController` to cancel a question.
+         *
+         * ```js
+         * const ac = new AbortController();
+         * const signal = ac.signal;
+         *
+         * rl.question('What is your favorite food? ', { signal }, (answer) => {
+         *   console.log(`Oh, so your favorite food is ${answer}`);
+         * });
+         *
+         * signal.addEventListener('abort', () => {
+         *   console.log('The food question timed out');
+         * }, { once: true });
+         *
+         * setTimeout(() => ac.abort(), 10000);
+         * ```
+         *
+         * If this method is invoked as it's util.promisify()ed version, it returns a
+         * Promise that fulfills with the answer. If the question is canceled using
+         * an `AbortController` it will reject with an `AbortError`.
+         *
+         * ```js
+         * const util = require('util');
+         * const question = util.promisify(rl.question).bind(rl);
+         *
+         * async function questionExample() {
+         *   try {
+         *     const answer = await question('What is you favorite food? ');
+         *     console.log(`Oh, so your favorite food is ${answer}`);
+         *   } catch (err) {
+         *     console.error('Question rejected', err);
+         *   }
+         * }
+         * questionExample();
+         * ```
+         * @since v0.3.3
+         * @param query A statement or query to write to `output`, prepended to the prompt.
+         * @param callback A callback function that is invoked with the user's input in response to the `query`.
+         */
+        question(query: string, callback: (answer: string) => void): void;
+        question(query: string, options: Abortable, callback: (answer: string) => void): void;
+        /**
+         * The `rl.pause()` method pauses the `input` stream, allowing it to be resumed
+         * later if necessary.
+         *
+         * Calling `rl.pause()` does not immediately pause other events (including`'line'`) from being emitted by the `readline.Interface` instance.
+         * @since v0.3.4
+         */
+        pause(): this;
+        /**
+         * The `rl.resume()` method resumes the `input` stream if it has been paused.
+         * @since v0.3.4
+         */
+        resume(): this;
+        /**
+         * The `rl.close()` method closes the `readline.Interface` instance and
+         * relinquishes control over the `input` and `output` streams. When called,
+         * the `'close'` event will be emitted.
+         *
+         * Calling `rl.close()` does not immediately stop other events (including `'line'`)
+         * from being emitted by the `readline.Interface` instance.
+         * @since v0.1.98
+         */
+        close(): void;
+        /**
+         * The `rl.write()` method will write either `data` or a key sequence identified
+         * by `key` to the `output`. The `key` argument is supported only if `output` is
+         * a `TTY` text terminal. See `TTY keybindings` for a list of key
+         * combinations.
+         *
+         * If `key` is specified, `data` is ignored.
+         *
+         * When called, `rl.write()` will resume the `input` stream if it has been
+         * paused.
+         *
+         * If the `readline.Interface` was created with `output` set to `null` or`undefined` the `data` and `key` are not written.
+         *
+         * ```js
+         * rl.write('Delete this!');
+         * // Simulate Ctrl+U to delete the line written previously
+         * rl.write(null, { ctrl: true, name: 'u' });
+         * ```
+         *
+         * The `rl.write()` method will write the data to the `readline` `Interface`'s`input`_as if it were provided by the user_.
+         * @since v0.1.98
+         */
+        write(data: string | Buffer, key?: Key): void;
+        write(data: undefined | null | string | Buffer, key: Key): void;
+        /**
+         * Returns the real position of the cursor in relation to the input
+         * prompt + string. Long input (wrapping) strings, as well as multiple
+         * line prompts are included in the calculations.
+         * @since v13.5.0, v12.16.0
+         */
+        getCursorPos(): CursorPos;
+        /**
+         * events.EventEmitter
+         * 1. close
+         * 2. line
+         * 3. pause
+         * 4. resume
+         * 5. SIGCONT
+         * 6. SIGINT
+         * 7. SIGTSTP
+         * 8. history
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'line', listener: (input: string) => void): this;
+        addListener(event: 'pause', listener: () => void): this;
+        addListener(event: 'resume', listener: () => void): this;
+        addListener(event: 'SIGCONT', listener: () => void): this;
+        addListener(event: 'SIGINT', listener: () => void): this;
+        addListener(event: 'SIGTSTP', listener: () => void): this;
+        addListener(event: 'history', listener: (history: string[]) => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'line', input: string): boolean;
+        emit(event: 'pause'): boolean;
+        emit(event: 'resume'): boolean;
+        emit(event: 'SIGCONT'): boolean;
+        emit(event: 'SIGINT'): boolean;
+        emit(event: 'SIGTSTP'): boolean;
+        emit(event: 'history', history: string[]): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'line', listener: (input: string) => void): this;
+        on(event: 'pause', listener: () => void): this;
+        on(event: 'resume', listener: () => void): this;
+        on(event: 'SIGCONT', listener: () => void): this;
+        on(event: 'SIGINT', listener: () => void): this;
+        on(event: 'SIGTSTP', listener: () => void): this;
+        on(event: 'history', listener: (history: string[]) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'line', listener: (input: string) => void): this;
+        once(event: 'pause', listener: () => void): this;
+        once(event: 'resume', listener: () => void): this;
+        once(event: 'SIGCONT', listener: () => void): this;
+        once(event: 'SIGINT', listener: () => void): this;
+        once(event: 'SIGTSTP', listener: () => void): this;
+        once(event: 'history', listener: (history: string[]) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'line', listener: (input: string) => void): this;
+        prependListener(event: 'pause', listener: () => void): this;
+        prependListener(event: 'resume', listener: () => void): this;
+        prependListener(event: 'SIGCONT', listener: () => void): this;
+        prependListener(event: 'SIGINT', listener: () => void): this;
+        prependListener(event: 'SIGTSTP', listener: () => void): this;
+        prependListener(event: 'history', listener: (history: string[]) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'line', listener: (input: string) => void): this;
+        prependOnceListener(event: 'pause', listener: () => void): this;
+        prependOnceListener(event: 'resume', listener: () => void): this;
+        prependOnceListener(event: 'SIGCONT', listener: () => void): this;
+        prependOnceListener(event: 'SIGINT', listener: () => void): this;
+        prependOnceListener(event: 'SIGTSTP', listener: () => void): this;
+        prependOnceListener(event: 'history', listener: (history: string[]) => void): this;
+        [Symbol.asyncIterator](): AsyncIterableIterator<string>;
+    }
+    export type ReadLine = Interface; // type forwarded for backwards compatibility
+    export type Completer = (line: string) => CompleterResult;
+    export type AsyncCompleter = (line: string, callback: (err?: null | Error, result?: CompleterResult) => void) => void;
+    export type CompleterResult = [string[], string];
+    export interface ReadLineOptions {
+        input: NodeJS.ReadableStream;
+        output?: NodeJS.WritableStream | undefined;
+        completer?: Completer | AsyncCompleter | undefined;
+        terminal?: boolean | undefined;
+        /**
+         *  Initial list of history lines. This option makes sense
+         * only if `terminal` is set to `true` by the user or by an internal `output`
+         * check, otherwise the history caching mechanism is not initialized at all.
+         * @default []
+         */
+        history?: string[] | undefined;
+        historySize?: number | undefined;
+        prompt?: string | undefined;
+        crlfDelay?: number | undefined;
+        /**
+         * If `true`, when a new input line added
+         * to the history list duplicates an older one, this removes the older line
+         * from the list.
+         * @default false
+         */
+        removeHistoryDuplicates?: boolean | undefined;
+        escapeCodeTimeout?: number | undefined;
+        tabSize?: number | undefined;
+    }
+    /**
+     * The `readline.createInterface()` method creates a new `readline.Interface`instance.
+     *
+     * ```js
+     * const readline = require('readline');
+     * const rl = readline.createInterface({
+     *   input: process.stdin,
+     *   output: process.stdout
+     * });
+     * ```
+     *
+     * Once the `readline.Interface` instance is created, the most common case is to
+     * listen for the `'line'` event:
+     *
+     * ```js
+     * rl.on('line', (line) => {
+     *   console.log(`Received: ${line}`);
+     * });
+     * ```
+     *
+     * If `terminal` is `true` for this instance then the `output` stream will get
+     * the best compatibility if it defines an `output.columns` property and emits
+     * a `'resize'` event on the `output` if or when the columns ever change
+     * (`process.stdout` does this automatically when it is a TTY).
+     *
+     * When creating a `readline.Interface` using `stdin` as input, the program
+     * will not terminate until it receives `EOF` (Ctrl+D on
+     * Linux/macOS, Ctrl+Z followed by Return on
+     * Windows).
+     * If you want your application to exit without waiting for user input, you can `unref()` the standard input stream:
+     *
+     * ```js
+     * process.stdin.unref();
+     * ```
+     * @since v0.1.98
+     */
+    export function createInterface(input: NodeJS.ReadableStream, output?: NodeJS.WritableStream, completer?: Completer | AsyncCompleter, terminal?: boolean): Interface;
+    export function createInterface(options: ReadLineOptions): Interface;
+    /**
+     * The `readline.emitKeypressEvents()` method causes the given `Readable` stream to begin emitting `'keypress'` events corresponding to received input.
+     *
+     * Optionally, `interface` specifies a `readline.Interface` instance for which
+     * autocompletion is disabled when copy-pasted input is detected.
+     *
+     * If the `stream` is a `TTY`, then it must be in raw mode.
+     *
+     * This is automatically called by any readline instance on its `input` if the`input` is a terminal. Closing the `readline` instance does not stop
+     * the `input` from emitting `'keypress'` events.
+     *
+     * ```js
+     * readline.emitKeypressEvents(process.stdin);
+     * if (process.stdin.isTTY)
+     *   process.stdin.setRawMode(true);
+     * ```
+     *
+     * ## Example: Tiny CLI
+     *
+     * The following example illustrates the use of `readline.Interface` class to
+     * implement a small command-line interface:
+     *
+     * ```js
+     * const readline = require('readline');
+     * const rl = readline.createInterface({
+     *   input: process.stdin,
+     *   output: process.stdout,
+     *   prompt: 'OHAI> '
+     * });
+     *
+     * rl.prompt();
+     *
+     * rl.on('line', (line) => {
+     *   switch (line.trim()) {
+     *     case 'hello':
+     *       console.log('world!');
+     *       break;
+     *     default:
+     *       console.log(`Say what? I might have heard '${line.trim()}'`);
+     *       break;
+     *   }
+     *   rl.prompt();
+     * }).on('close', () => {
+     *   console.log('Have a great day!');
+     *   process.exit(0);
+     * });
+     * ```
+     *
+     * ## Example: Read file stream line-by-Line
+     *
+     * A common use case for `readline` is to consume an input file one line at a
+     * time. The easiest way to do so is leveraging the `fs.ReadStream` API as
+     * well as a `for await...of` loop:
+     *
+     * ```js
+     * const fs = require('fs');
+     * const readline = require('readline');
+     *
+     * async function processLineByLine() {
+     *   const fileStream = fs.createReadStream('input.txt');
+     *
+     *   const rl = readline.createInterface({
+     *     input: fileStream,
+     *     crlfDelay: Infinity
+     *   });
+     *   // Note: we use the crlfDelay option to recognize all instances of CR LF
+     *   // ('\r\n') in input.txt as a single line break.
+     *
+     *   for await (const line of rl) {
+     *     // Each line in input.txt will be successively available here as `line`.
+     *     console.log(`Line from file: ${line}`);
+     *   }
+     * }
+     *
+     * processLineByLine();
+     * ```
+     *
+     * Alternatively, one could use the `'line'` event:
+     *
+     * ```js
+     * const fs = require('fs');
+     * const readline = require('readline');
+     *
+     * const rl = readline.createInterface({
+     *   input: fs.createReadStream('sample.txt'),
+     *   crlfDelay: Infinity
+     * });
+     *
+     * rl.on('line', (line) => {
+     *   console.log(`Line from file: ${line}`);
+     * });
+     * ```
+     *
+     * Currently, `for await...of` loop can be a bit slower. If `async` / `await`flow and speed are both essential, a mixed approach can be applied:
+     *
+     * ```js
+     * const { once } = require('events');
+     * const { createReadStream } = require('fs');
+     * const { createInterface } = require('readline');
+     *
+     * (async function processLineByLine() {
+     *   try {
+     *     const rl = createInterface({
+     *       input: createReadStream('big-file.txt'),
+     *       crlfDelay: Infinity
+     *     });
+     *
+     *     rl.on('line', (line) => {
+     *       // Process the line.
+     *     });
+     *
+     *     await once(rl, 'close');
+     *
+     *     console.log('File processed.');
+     *   } catch (err) {
+     *     console.error(err);
+     *   }
+     * })();
+     * ```
+     * @since v0.7.7
+     */
+    export function emitKeypressEvents(stream: NodeJS.ReadableStream, readlineInterface?: Interface): void;
+    export type Direction = -1 | 0 | 1;
+    export interface CursorPos {
+        rows: number;
+        cols: number;
+    }
+    /**
+     * The `readline.clearLine()` method clears current line of given `TTY` stream
+     * in a specified direction identified by `dir`.
+     * @since v0.7.7
+     * @param callback Invoked once the operation completes.
+     * @return `false` if `stream` wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+     */
+    export function clearLine(stream: NodeJS.WritableStream, dir: Direction, callback?: () => void): boolean;
+    /**
+     * The `readline.clearScreenDown()` method clears the given `TTY` stream from
+     * the current position of the cursor down.
+     * @since v0.7.7
+     * @param callback Invoked once the operation completes.
+     * @return `false` if `stream` wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+     */
+    export function clearScreenDown(stream: NodeJS.WritableStream, callback?: () => void): boolean;
+    /**
+     * The `readline.cursorTo()` method moves cursor to the specified position in a
+     * given `TTY` `stream`.
+     * @since v0.7.7
+     * @param callback Invoked once the operation completes.
+     * @return `false` if `stream` wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+     */
+    export function cursorTo(stream: NodeJS.WritableStream, x: number, y?: number, callback?: () => void): boolean;
+    /**
+     * The `readline.moveCursor()` method moves the cursor _relative_ to its current
+     * position in a given `TTY` `stream`.
+     *
+     * ## Example: Tiny CLI
+     *
+     * The following example illustrates the use of `readline.Interface` class to
+     * implement a small command-line interface:
+     *
+     * ```js
+     * const readline = require('readline');
+     * const rl = readline.createInterface({
+     *   input: process.stdin,
+     *   output: process.stdout,
+     *   prompt: 'OHAI> '
+     * });
+     *
+     * rl.prompt();
+     *
+     * rl.on('line', (line) => {
+     *   switch (line.trim()) {
+     *     case 'hello':
+     *       console.log('world!');
+     *       break;
+     *     default:
+     *       console.log(`Say what? I might have heard '${line.trim()}'`);
+     *       break;
+     *   }
+     *   rl.prompt();
+     * }).on('close', () => {
+     *   console.log('Have a great day!');
+     *   process.exit(0);
+     * });
+     * ```
+     *
+     * ## Example: Read file stream line-by-Line
+     *
+     * A common use case for `readline` is to consume an input file one line at a
+     * time. The easiest way to do so is leveraging the `fs.ReadStream` API as
+     * well as a `for await...of` loop:
+     *
+     * ```js
+     * const fs = require('fs');
+     * const readline = require('readline');
+     *
+     * async function processLineByLine() {
+     *   const fileStream = fs.createReadStream('input.txt');
+     *
+     *   const rl = readline.createInterface({
+     *     input: fileStream,
+     *     crlfDelay: Infinity
+     *   });
+     *   // Note: we use the crlfDelay option to recognize all instances of CR LF
+     *   // ('\r\n') in input.txt as a single line break.
+     *
+     *   for await (const line of rl) {
+     *     // Each line in input.txt will be successively available here as `line`.
+     *     console.log(`Line from file: ${line}`);
+     *   }
+     * }
+     *
+     * processLineByLine();
+     * ```
+     *
+     * Alternatively, one could use the `'line'` event:
+     *
+     * ```js
+     * const fs = require('fs');
+     * const readline = require('readline');
+     *
+     * const rl = readline.createInterface({
+     *   input: fs.createReadStream('sample.txt'),
+     *   crlfDelay: Infinity
+     * });
+     *
+     * rl.on('line', (line) => {
+     *   console.log(`Line from file: ${line}`);
+     * });
+     * ```
+     *
+     * Currently, `for await...of` loop can be a bit slower. If `async` / `await`flow and speed are both essential, a mixed approach can be applied:
+     *
+     * ```js
+     * const { once } = require('events');
+     * const { createReadStream } = require('fs');
+     * const { createInterface } = require('readline');
+     *
+     * (async function processLineByLine() {
+     *   try {
+     *     const rl = createInterface({
+     *       input: createReadStream('big-file.txt'),
+     *       crlfDelay: Infinity
+     *     });
+     *
+     *     rl.on('line', (line) => {
+     *       // Process the line.
+     *     });
+     *
+     *     await once(rl, 'close');
+     *
+     *     console.log('File processed.');
+     *   } catch (err) {
+     *     console.error(err);
+     *   }
+     * })();
+     * ```
+     * @since v0.7.7
+     * @param callback Invoked once the operation completes.
+     * @return `false` if `stream` wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+     */
+    export function moveCursor(stream: NodeJS.WritableStream, dx: number, dy: number, callback?: () => void): boolean;
+}
+declare module 'node:readline' {
+    export * from 'readline';
+}
diff --git a/igv_component/node_modules/@types/node/readline/promises.d.ts b/igv_component/node_modules/@types/node/readline/promises.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..8f9f06f0b964ee8d214d670dfde9006fd8a18a30
--- /dev/null
+++ b/igv_component/node_modules/@types/node/readline/promises.d.ts
@@ -0,0 +1,143 @@
+/**
+ * The `readline/promise` module provides an API for reading lines of input from a Readable stream one line at a time.
+ *
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/readline/promises.js)
+ * @since v17.0.0
+ */
+declare module 'readline/promises' {
+    import { Interface as _Interface, ReadLineOptions, Completer, AsyncCompleter, Direction } from 'node:readline';
+    import { Abortable } from 'node:events';
+
+    class Interface extends _Interface {
+        /**
+         * The rl.question() method displays the query by writing it to the output, waits for user input to be provided on input,
+         * then invokes the callback function passing the provided input as the first argument.
+         *
+         * When called, rl.question() will resume the input stream if it has been paused.
+         *
+         * If the readlinePromises.Interface was created with output set to null or undefined the query is not written.
+         *
+         * If the question is called after rl.close(), it returns a rejected promise.
+         *
+         * Example usage:
+         *
+         * ```js
+         * const answer = await rl.question('What is your favorite food? ');
+         * console.log(`Oh, so your favorite food is ${answer}`);
+         * ```
+         *
+         * Using an AbortSignal to cancel a question.
+         *
+         * ```js
+         * const signal = AbortSignal.timeout(10_000);
+         *
+         * signal.addEventListener('abort', () => {
+         *   console.log('The food question timed out');
+         * }, { once: true });
+         *
+         * const answer = await rl.question('What is your favorite food? ', { signal });
+         * console.log(`Oh, so your favorite food is ${answer}`);
+         * ```
+         *
+         * @since v17.0.0
+         * @param query A statement or query to write to output, prepended to the prompt.
+         */
+        question(query: string): Promise<string>;
+        question(query: string, options: Abortable): Promise<string>;
+    }
+
+    class Readline {
+        /**
+         * @param stream A TTY stream.
+         */
+        constructor(stream: NodeJS.WritableStream, options?: { autoCommit?: boolean });
+        /**
+         * The `rl.clearLine()` method adds to the internal list of pending action an action that clears current line of the associated `stream` in a specified direction identified by `dir`.
+         * Call `rl.commit()` to see the effect of this method, unless `autoCommit: true` was passed to the constructor.
+         */
+        clearLine(dir: Direction): this;
+        /**
+         * The `rl.clearScreenDown()` method adds to the internal list of pending action an action that clears the associated `stream` from the current position of the cursor down.
+         * Call `rl.commit()` to see the effect of this method, unless `autoCommit: true` was passed to the constructor.
+         */
+        clearScreenDown(): this;
+        /**
+         * The `rl.commit()` method sends all the pending actions to the associated `stream` and clears the internal list of pending actions.
+         */
+        commit(): Promise<void>;
+        /**
+         * The `rl.cursorTo()` method adds to the internal list of pending action an action that moves cursor to the specified position in the associated `stream`.
+         * Call `rl.commit()` to see the effect of this method, unless `autoCommit: true` was passed to the constructor.
+         */
+        cursorTo(x: number, y?: number): this;
+        /**
+         * The `rl.moveCursor()` method adds to the internal list of pending action an action that moves the cursor relative to its current position in the associated `stream`.
+         * Call `rl.commit()` to see the effect of this method, unless autoCommit: true was passed to the constructor.
+         */
+        moveCursor(dx: number, dy: number): this;
+        /**
+         * The `rl.rollback()` method clears the internal list of pending actions without sending it to the associated `stream`.
+         */
+        rollback(): this;
+    }
+
+    /**
+     * The `readlinePromises.createInterface()` method creates a new `readlinePromises.Interface` instance.
+     *
+     * ```js
+     * const readlinePromises = require('node:readline/promises');
+     * const rl = readlinePromises.createInterface({
+     *   input: process.stdin,
+     *   output: process.stdout
+     * });
+     * ```
+     *
+     * Once the `readlinePromises.Interface` instance is created, the most common case is to listen for the `'line'` event:
+     *
+     * ```js
+     * rl.on('line', (line) => {
+     *   console.log(`Received: ${line}`);
+     * });
+     * ```
+     *
+     * If `terminal` is `true` for this instance then the `output` stream will get the best compatibility if it defines an `output.columns` property,
+     * and emits a `'resize'` event on the `output`, if or when the columns ever change (`process.stdout` does this automatically when it is a TTY).
+     *
+     * ## Use of the `completer` function
+     *
+     * The `completer` function takes the current line entered by the user as an argument, and returns an `Array` with 2 entries:
+     *
+     * - An Array with matching entries for the completion.
+     * - The substring that was used for the matching.
+     *
+     * For instance: `[[substr1, substr2, ...], originalsubstring]`.
+     *
+     * ```js
+     * function completer(line) {
+     *   const completions = '.help .error .exit .quit .q'.split(' ');
+     *   const hits = completions.filter((c) => c.startsWith(line));
+     *   // Show all completions if none found
+     *   return [hits.length ? hits : completions, line];
+     * }
+     * ```
+     *
+     * The `completer` function can also returns a `Promise`, or be asynchronous:
+     *
+     * ```js
+     * async function completer(linePartial) {
+     *   await someAsyncWork();
+     *   return [['123'], linePartial];
+     * }
+     * ```
+     */
+    function createInterface(
+        input: NodeJS.ReadableStream,
+        output?: NodeJS.WritableStream,
+        completer?: Completer | AsyncCompleter,
+        terminal?: boolean,
+    ): Interface;
+    function createInterface(options: ReadLineOptions): Interface;
+}
+declare module 'node:readline/promises' {
+    export * from 'readline/promises';
+}
diff --git a/igv_component/node_modules/@types/node/repl.d.ts b/igv_component/node_modules/@types/node/repl.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..be42ccc4aebe3cb864d811ddece32c2d49dbe63c
--- /dev/null
+++ b/igv_component/node_modules/@types/node/repl.d.ts
@@ -0,0 +1,424 @@
+/**
+ * The `repl` module provides a Read-Eval-Print-Loop (REPL) implementation that
+ * is available both as a standalone program or includible in other applications.
+ * It can be accessed using:
+ *
+ * ```js
+ * const repl = require('repl');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/repl.js)
+ */
+declare module 'repl' {
+    import { Interface, Completer, AsyncCompleter } from 'node:readline';
+    import { Context } from 'node:vm';
+    import { InspectOptions } from 'node:util';
+    interface ReplOptions {
+        /**
+         * The input prompt to display.
+         * @default "> "
+         */
+        prompt?: string | undefined;
+        /**
+         * The `Readable` stream from which REPL input will be read.
+         * @default process.stdin
+         */
+        input?: NodeJS.ReadableStream | undefined;
+        /**
+         * The `Writable` stream to which REPL output will be written.
+         * @default process.stdout
+         */
+        output?: NodeJS.WritableStream | undefined;
+        /**
+         * If `true`, specifies that the output should be treated as a TTY terminal, and have
+         * ANSI/VT100 escape codes written to it.
+         * Default: checking the value of the `isTTY` property on the output stream upon
+         * instantiation.
+         */
+        terminal?: boolean | undefined;
+        /**
+         * The function to be used when evaluating each given line of input.
+         * Default: an async wrapper for the JavaScript `eval()` function. An `eval` function can
+         * error with `repl.Recoverable` to indicate the input was incomplete and prompt for
+         * additional lines.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_default_evaluation
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_custom_evaluation_functions
+         */
+        eval?: REPLEval | undefined;
+        /**
+         * Defines if the repl prints output previews or not.
+         * @default `true` Always `false` in case `terminal` is falsy.
+         */
+        preview?: boolean | undefined;
+        /**
+         * If `true`, specifies that the default `writer` function should include ANSI color
+         * styling to REPL output. If a custom `writer` function is provided then this has no
+         * effect.
+         * Default: the REPL instance's `terminal` value.
+         */
+        useColors?: boolean | undefined;
+        /**
+         * If `true`, specifies that the default evaluation function will use the JavaScript
+         * `global` as the context as opposed to creating a new separate context for the REPL
+         * instance. The node CLI REPL sets this value to `true`.
+         * Default: `false`.
+         */
+        useGlobal?: boolean | undefined;
+        /**
+         * If `true`, specifies that the default writer will not output the return value of a
+         * command if it evaluates to `undefined`.
+         * Default: `false`.
+         */
+        ignoreUndefined?: boolean | undefined;
+        /**
+         * The function to invoke to format the output of each command before writing to `output`.
+         * Default: a wrapper for `util.inspect`.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_customizing_repl_output
+         */
+        writer?: REPLWriter | undefined;
+        /**
+         * An optional function used for custom Tab auto completion.
+         *
+         * @see https://nodejs.org/dist/latest-v11.x/docs/api/readline.html#readline_use_of_the_completer_function
+         */
+        completer?: Completer | AsyncCompleter | undefined;
+        /**
+         * A flag that specifies whether the default evaluator executes all JavaScript commands in
+         * strict mode or default (sloppy) mode.
+         * Accepted values are:
+         * - `repl.REPL_MODE_SLOPPY` - evaluates expressions in sloppy mode.
+         * - `repl.REPL_MODE_STRICT` - evaluates expressions in strict mode. This is equivalent to
+         *   prefacing every repl statement with `'use strict'`.
+         */
+        replMode?: typeof REPL_MODE_SLOPPY | typeof REPL_MODE_STRICT | undefined;
+        /**
+         * Stop evaluating the current piece of code when `SIGINT` is received, i.e. `Ctrl+C` is
+         * pressed. This cannot be used together with a custom `eval` function.
+         * Default: `false`.
+         */
+        breakEvalOnSigint?: boolean | undefined;
+    }
+    type REPLEval = (this: REPLServer, evalCmd: string, context: Context, file: string, cb: (err: Error | null, result: any) => void) => void;
+    type REPLWriter = (this: REPLServer, obj: any) => string;
+    /**
+     * This is the default "writer" value, if none is passed in the REPL options,
+     * and it can be overridden by custom print functions.
+     */
+    const writer: REPLWriter & {
+        options: InspectOptions;
+    };
+    type REPLCommandAction = (this: REPLServer, text: string) => void;
+    interface REPLCommand {
+        /**
+         * Help text to be displayed when `.help` is entered.
+         */
+        help?: string | undefined;
+        /**
+         * The function to execute, optionally accepting a single string argument.
+         */
+        action: REPLCommandAction;
+    }
+    /**
+     * Instances of `repl.REPLServer` are created using the {@link start} method
+     * or directly using the JavaScript `new` keyword.
+     *
+     * ```js
+     * const repl = require('repl');
+     *
+     * const options = { useColors: true };
+     *
+     * const firstInstance = repl.start(options);
+     * const secondInstance = new repl.REPLServer(options);
+     * ```
+     * @since v0.1.91
+     */
+    class REPLServer extends Interface {
+        /**
+         * The `vm.Context` provided to the `eval` function to be used for JavaScript
+         * evaluation.
+         */
+        readonly context: Context;
+        /**
+         * @deprecated since v14.3.0 - Use `input` instead.
+         */
+        readonly inputStream: NodeJS.ReadableStream;
+        /**
+         * @deprecated since v14.3.0 - Use `output` instead.
+         */
+        readonly outputStream: NodeJS.WritableStream;
+        /**
+         * The `Readable` stream from which REPL input will be read.
+         */
+        readonly input: NodeJS.ReadableStream;
+        /**
+         * The `Writable` stream to which REPL output will be written.
+         */
+        readonly output: NodeJS.WritableStream;
+        /**
+         * The commands registered via `replServer.defineCommand()`.
+         */
+        readonly commands: NodeJS.ReadOnlyDict<REPLCommand>;
+        /**
+         * A value indicating whether the REPL is currently in "editor mode".
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_commands_and_special_keys
+         */
+        readonly editorMode: boolean;
+        /**
+         * A value indicating whether the `_` variable has been assigned.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
+         */
+        readonly underscoreAssigned: boolean;
+        /**
+         * The last evaluation result from the REPL (assigned to the `_` variable inside of the REPL).
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
+         */
+        readonly last: any;
+        /**
+         * A value indicating whether the `_error` variable has been assigned.
+         *
+         * @since v9.8.0
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
+         */
+        readonly underscoreErrAssigned: boolean;
+        /**
+         * The last error raised inside the REPL (assigned to the `_error` variable inside of the REPL).
+         *
+         * @since v9.8.0
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
+         */
+        readonly lastError: any;
+        /**
+         * Specified in the REPL options, this is the function to be used when evaluating each
+         * given line of input. If not specified in the REPL options, this is an async wrapper
+         * for the JavaScript `eval()` function.
+         */
+        readonly eval: REPLEval;
+        /**
+         * Specified in the REPL options, this is a value indicating whether the default
+         * `writer` function should include ANSI color styling to REPL output.
+         */
+        readonly useColors: boolean;
+        /**
+         * Specified in the REPL options, this is a value indicating whether the default `eval`
+         * function will use the JavaScript `global` as the context as opposed to creating a new
+         * separate context for the REPL instance.
+         */
+        readonly useGlobal: boolean;
+        /**
+         * Specified in the REPL options, this is a value indicating whether the default `writer`
+         * function should output the result of a command if it evaluates to `undefined`.
+         */
+        readonly ignoreUndefined: boolean;
+        /**
+         * Specified in the REPL options, this is the function to invoke to format the output of
+         * each command before writing to `outputStream`. If not specified in the REPL options,
+         * this will be a wrapper for `util.inspect`.
+         */
+        readonly writer: REPLWriter;
+        /**
+         * Specified in the REPL options, this is the function to use for custom Tab auto-completion.
+         */
+        readonly completer: Completer | AsyncCompleter;
+        /**
+         * Specified in the REPL options, this is a flag that specifies whether the default `eval`
+         * function should execute all JavaScript commands in strict mode or default (sloppy) mode.
+         * Possible values are:
+         * - `repl.REPL_MODE_SLOPPY` - evaluates expressions in sloppy mode.
+         * - `repl.REPL_MODE_STRICT` - evaluates expressions in strict mode. This is equivalent to
+         *    prefacing every repl statement with `'use strict'`.
+         */
+        readonly replMode: typeof REPL_MODE_SLOPPY | typeof REPL_MODE_STRICT;
+        /**
+         * NOTE: According to the documentation:
+         *
+         * > Instances of `repl.REPLServer` are created using the `repl.start()` method and
+         * > _should not_ be created directly using the JavaScript `new` keyword.
+         *
+         * `REPLServer` cannot be subclassed due to implementation specifics in NodeJS.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_class_replserver
+         */
+        private constructor();
+        /**
+         * The `replServer.defineCommand()` method is used to add new `.`\-prefixed commands
+         * to the REPL instance. Such commands are invoked by typing a `.` followed by the`keyword`. The `cmd` is either a `Function` or an `Object` with the following
+         * properties:
+         *
+         * The following example shows two new commands added to the REPL instance:
+         *
+         * ```js
+         * const repl = require('repl');
+         *
+         * const replServer = repl.start({ prompt: '> ' });
+         * replServer.defineCommand('sayhello', {
+         *   help: 'Say hello',
+         *   action(name) {
+         *     this.clearBufferedCommand();
+         *     console.log(`Hello, ${name}!`);
+         *     this.displayPrompt();
+         *   }
+         * });
+         * replServer.defineCommand('saybye', function saybye() {
+         *   console.log('Goodbye!');
+         *   this.close();
+         * });
+         * ```
+         *
+         * The new commands can then be used from within the REPL instance:
+         *
+         * ```console
+         * > .sayhello Node.js User
+         * Hello, Node.js User!
+         * > .saybye
+         * Goodbye!
+         * ```
+         * @since v0.3.0
+         * @param keyword The command keyword (_without_ a leading `.` character).
+         * @param cmd The function to invoke when the command is processed.
+         */
+        defineCommand(keyword: string, cmd: REPLCommandAction | REPLCommand): void;
+        /**
+         * The `replServer.displayPrompt()` method readies the REPL instance for input
+         * from the user, printing the configured `prompt` to a new line in the `output`and resuming the `input` to accept new input.
+         *
+         * When multi-line input is being entered, an ellipsis is printed rather than the
+         * 'prompt'.
+         *
+         * When `preserveCursor` is `true`, the cursor placement will not be reset to `0`.
+         *
+         * The `replServer.displayPrompt` method is primarily intended to be called from
+         * within the action function for commands registered using the`replServer.defineCommand()` method.
+         * @since v0.1.91
+         */
+        displayPrompt(preserveCursor?: boolean): void;
+        /**
+         * The `replServer.clearBufferedCommand()` method clears any command that has been
+         * buffered but not yet executed. This method is primarily intended to be
+         * called from within the action function for commands registered using the`replServer.defineCommand()` method.
+         * @since v9.0.0
+         */
+        clearBufferedCommand(): void;
+        /**
+         * Initializes a history log file for the REPL instance. When executing the
+         * Node.js binary and using the command-line REPL, a history file is initialized
+         * by default. However, this is not the case when creating a REPL
+         * programmatically. Use this method to initialize a history log file when working
+         * with REPL instances programmatically.
+         * @since v11.10.0
+         * @param historyPath the path to the history file
+         * @param callback called when history writes are ready or upon error
+         */
+        setupHistory(path: string, callback: (err: Error | null, repl: this) => void): void;
+        /**
+         * events.EventEmitter
+         * 1. close - inherited from `readline.Interface`
+         * 2. line - inherited from `readline.Interface`
+         * 3. pause - inherited from `readline.Interface`
+         * 4. resume - inherited from `readline.Interface`
+         * 5. SIGCONT - inherited from `readline.Interface`
+         * 6. SIGINT - inherited from `readline.Interface`
+         * 7. SIGTSTP - inherited from `readline.Interface`
+         * 8. exit
+         * 9. reset
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'line', listener: (input: string) => void): this;
+        addListener(event: 'pause', listener: () => void): this;
+        addListener(event: 'resume', listener: () => void): this;
+        addListener(event: 'SIGCONT', listener: () => void): this;
+        addListener(event: 'SIGINT', listener: () => void): this;
+        addListener(event: 'SIGTSTP', listener: () => void): this;
+        addListener(event: 'exit', listener: () => void): this;
+        addListener(event: 'reset', listener: (context: Context) => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'line', input: string): boolean;
+        emit(event: 'pause'): boolean;
+        emit(event: 'resume'): boolean;
+        emit(event: 'SIGCONT'): boolean;
+        emit(event: 'SIGINT'): boolean;
+        emit(event: 'SIGTSTP'): boolean;
+        emit(event: 'exit'): boolean;
+        emit(event: 'reset', context: Context): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'line', listener: (input: string) => void): this;
+        on(event: 'pause', listener: () => void): this;
+        on(event: 'resume', listener: () => void): this;
+        on(event: 'SIGCONT', listener: () => void): this;
+        on(event: 'SIGINT', listener: () => void): this;
+        on(event: 'SIGTSTP', listener: () => void): this;
+        on(event: 'exit', listener: () => void): this;
+        on(event: 'reset', listener: (context: Context) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'line', listener: (input: string) => void): this;
+        once(event: 'pause', listener: () => void): this;
+        once(event: 'resume', listener: () => void): this;
+        once(event: 'SIGCONT', listener: () => void): this;
+        once(event: 'SIGINT', listener: () => void): this;
+        once(event: 'SIGTSTP', listener: () => void): this;
+        once(event: 'exit', listener: () => void): this;
+        once(event: 'reset', listener: (context: Context) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'line', listener: (input: string) => void): this;
+        prependListener(event: 'pause', listener: () => void): this;
+        prependListener(event: 'resume', listener: () => void): this;
+        prependListener(event: 'SIGCONT', listener: () => void): this;
+        prependListener(event: 'SIGINT', listener: () => void): this;
+        prependListener(event: 'SIGTSTP', listener: () => void): this;
+        prependListener(event: 'exit', listener: () => void): this;
+        prependListener(event: 'reset', listener: (context: Context) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'line', listener: (input: string) => void): this;
+        prependOnceListener(event: 'pause', listener: () => void): this;
+        prependOnceListener(event: 'resume', listener: () => void): this;
+        prependOnceListener(event: 'SIGCONT', listener: () => void): this;
+        prependOnceListener(event: 'SIGINT', listener: () => void): this;
+        prependOnceListener(event: 'SIGTSTP', listener: () => void): this;
+        prependOnceListener(event: 'exit', listener: () => void): this;
+        prependOnceListener(event: 'reset', listener: (context: Context) => void): this;
+    }
+    /**
+     * A flag passed in the REPL options. Evaluates expressions in sloppy mode.
+     */
+    const REPL_MODE_SLOPPY: unique symbol;
+    /**
+     * A flag passed in the REPL options. Evaluates expressions in strict mode.
+     * This is equivalent to prefacing every repl statement with `'use strict'`.
+     */
+    const REPL_MODE_STRICT: unique symbol;
+    /**
+     * The `repl.start()` method creates and starts a {@link REPLServer} instance.
+     *
+     * If `options` is a string, then it specifies the input prompt:
+     *
+     * ```js
+     * const repl = require('repl');
+     *
+     * // a Unix style prompt
+     * repl.start('$ ');
+     * ```
+     * @since v0.1.91
+     */
+    function start(options?: string | ReplOptions): REPLServer;
+    /**
+     * Indicates a recoverable error that a `REPLServer` can use to support multi-line input.
+     *
+     * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_recoverable_errors
+     */
+    class Recoverable extends SyntaxError {
+        err: Error;
+        constructor(err: Error);
+    }
+}
+declare module 'node:repl' {
+    export * from 'repl';
+}
diff --git a/igv_component/node_modules/@types/node/stream.d.ts b/igv_component/node_modules/@types/node/stream.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d478f335cae3f999369b753b678466b6d834d516
--- /dev/null
+++ b/igv_component/node_modules/@types/node/stream.d.ts
@@ -0,0 +1,1339 @@
+/**
+ * A stream is an abstract interface for working with streaming data in Node.js.
+ * The `stream` module provides an API for implementing the stream interface.
+ *
+ * There are many stream objects provided by Node.js. For instance, a `request to an HTTP server` and `process.stdout` are both stream instances.
+ *
+ * Streams can be readable, writable, or both. All streams are instances of `EventEmitter`.
+ *
+ * To access the `stream` module:
+ *
+ * ```js
+ * const stream = require('stream');
+ * ```
+ *
+ * The `stream` module is useful for creating new types of stream instances. It is
+ * usually not necessary to use the `stream` module to consume streams.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/stream.js)
+ */
+declare module 'stream' {
+    import { EventEmitter, Abortable } from 'node:events';
+    import * as streamPromises from 'node:stream/promises';
+    import * as streamConsumers from 'node:stream/consumers';
+    import * as streamWeb from 'node:stream/web';
+    class internal extends EventEmitter {
+        pipe<T extends NodeJS.WritableStream>(
+            destination: T,
+            options?: {
+                end?: boolean | undefined;
+            }
+        ): T;
+    }
+    namespace internal {
+        class Stream extends internal {
+            constructor(opts?: ReadableOptions);
+        }
+        interface StreamOptions<T extends Stream> extends Abortable {
+            emitClose?: boolean | undefined;
+            highWaterMark?: number | undefined;
+            objectMode?: boolean | undefined;
+            construct?(this: T, callback: (error?: Error | null) => void): void;
+            destroy?(this: T, error: Error | null, callback: (error: Error | null) => void): void;
+            autoDestroy?: boolean | undefined;
+        }
+        interface ReadableOptions extends StreamOptions<Readable> {
+            encoding?: BufferEncoding | undefined;
+            read?(this: Readable, size: number): void;
+        }
+        /**
+         * @since v0.9.4
+         */
+        class Readable extends Stream implements NodeJS.ReadableStream {
+            /**
+             * A utility method for creating Readable Streams out of iterators.
+             */
+            static from(iterable: Iterable<any> | AsyncIterable<any>, options?: ReadableOptions): Readable;
+            /**
+             * A utility method for creating a `Readable` from a web `ReadableStream`.
+             * @since v17.0.0
+             * @experimental
+             */
+            static fromWeb(readableStream: streamWeb.ReadableStream, options?: Pick<ReadableOptions, 'encoding' | 'highWaterMark' | 'objectMode' | 'signal'>): Readable;
+            /**
+             * Returns whether the stream has been read from or cancelled.
+             * @since v16.8.0
+             */
+            static isDisturbed(stream: Readable | NodeJS.ReadableStream): boolean;
+            /**
+             * A utility method for creating a web `ReadableStream` from a `Readable`.
+             * @since v17.0.0
+             * @experimental
+             */
+            static toWeb(streamReadable: Readable): streamWeb.ReadableStream;
+            /**
+             * Returns whether the stream was destroyed or errored before emitting `'end'`.
+             * @since v16.8.0
+             * @experimental
+             */
+            readonly readableAborted: boolean;
+            /**
+             * Is `true` if it is safe to call `readable.read()`, which means
+             * the stream has not been destroyed or emitted `'error'` or `'end'`.
+             * @since v11.4.0
+             */
+            readable: boolean;
+            /**
+             * Returns whether `'data'` has been emitted.
+             * @since v16.7.0, v14.18.0
+             * @experimental
+             */
+            readonly readableDidRead: boolean;
+            /**
+             * Getter for the property `encoding` of a given `Readable` stream. The `encoding`property can be set using the `readable.setEncoding()` method.
+             * @since v12.7.0
+             */
+            readonly readableEncoding: BufferEncoding | null;
+            /**
+             * Becomes `true` when `'end'` event is emitted.
+             * @since v12.9.0
+             */
+            readonly readableEnded: boolean;
+            /**
+             * This property reflects the current state of a `Readable` stream as described
+             * in the `Three states` section.
+             * @since v9.4.0
+             */
+            readonly readableFlowing: boolean | null;
+            /**
+             * Returns the value of `highWaterMark` passed when creating this `Readable`.
+             * @since v9.3.0
+             */
+            readonly readableHighWaterMark: number;
+            /**
+             * This property contains the number of bytes (or objects) in the queue
+             * ready to be read. The value provides introspection data regarding
+             * the status of the `highWaterMark`.
+             * @since v9.4.0
+             */
+            readonly readableLength: number;
+            /**
+             * Getter for the property `objectMode` of a given `Readable` stream.
+             * @since v12.3.0
+             */
+            readonly readableObjectMode: boolean;
+            /**
+             * Is `true` after `readable.destroy()` has been called.
+             * @since v18.0.0
+             */
+            destroyed: boolean;
+            /**
+             * Is true after 'close' has been emitted.
+             * @since v8.0.0
+             */
+            readonly closed: boolean;
+            /**
+             * Returns error if the stream has been destroyed with an error.
+             * @since v18.0.0
+             */
+            readonly errored: Error | null;
+            constructor(opts?: ReadableOptions);
+            _construct?(callback: (error?: Error | null) => void): void;
+            _read(size: number): void;
+            /**
+             * The `readable.read()` method reads data out of the internal buffer and
+             * returns it. If no data is available to be read, `null` is returned. By default,
+             * the data is returned as a `Buffer` object unless an encoding has been
+             * specified using the `readable.setEncoding()` method or the stream is operating
+             * in object mode.
+             *
+             * The optional `size` argument specifies a specific number of bytes to read. If`size` bytes are not available to be read, `null` will be returned _unless_the stream has ended, in which
+             * case all of the data remaining in the internal
+             * buffer will be returned.
+             *
+             * If the `size` argument is not specified, all of the data contained in the
+             * internal buffer will be returned.
+             *
+             * The `size` argument must be less than or equal to 1 GiB.
+             *
+             * The `readable.read()` method should only be called on `Readable` streams
+             * operating in paused mode. In flowing mode, `readable.read()` is called
+             * automatically until the internal buffer is fully drained.
+             *
+             * ```js
+             * const readable = getReadableStreamSomehow();
+             *
+             * // 'readable' may be triggered multiple times as data is buffered in
+             * readable.on('readable', () => {
+             *   let chunk;
+             *   console.log('Stream is readable (new data received in buffer)');
+             *   // Use a loop to make sure we read all currently available data
+             *   while (null !== (chunk = readable.read())) {
+             *     console.log(`Read ${chunk.length} bytes of data...`);
+             *   }
+             * });
+             *
+             * // 'end' will be triggered once when there is no more data available
+             * readable.on('end', () => {
+             *   console.log('Reached end of stream.');
+             * });
+             * ```
+             *
+             * Each call to `readable.read()` returns a chunk of data, or `null`. The chunks
+             * are not concatenated. A `while` loop is necessary to consume all data
+             * currently in the buffer. When reading a large file `.read()` may return `null`,
+             * having consumed all buffered content so far, but there is still more data to
+             * come not yet buffered. In this case a new `'readable'` event will be emitted
+             * when there is more data in the buffer. Finally the `'end'` event will be
+             * emitted when there is no more data to come.
+             *
+             * Therefore to read a file's whole contents from a `readable`, it is necessary
+             * to collect chunks across multiple `'readable'` events:
+             *
+             * ```js
+             * const chunks = [];
+             *
+             * readable.on('readable', () => {
+             *   let chunk;
+             *   while (null !== (chunk = readable.read())) {
+             *     chunks.push(chunk);
+             *   }
+             * });
+             *
+             * readable.on('end', () => {
+             *   const content = chunks.join('');
+             * });
+             * ```
+             *
+             * A `Readable` stream in object mode will always return a single item from
+             * a call to `readable.read(size)`, regardless of the value of the`size` argument.
+             *
+             * If the `readable.read()` method returns a chunk of data, a `'data'` event will
+             * also be emitted.
+             *
+             * Calling {@link read} after the `'end'` event has
+             * been emitted will return `null`. No runtime error will be raised.
+             * @since v0.9.4
+             * @param size Optional argument to specify how much data to read.
+             */
+            read(size?: number): any;
+            /**
+             * The `readable.setEncoding()` method sets the character encoding for
+             * data read from the `Readable` stream.
+             *
+             * By default, no encoding is assigned and stream data will be returned as`Buffer` objects. Setting an encoding causes the stream data
+             * to be returned as strings of the specified encoding rather than as `Buffer`objects. For instance, calling `readable.setEncoding('utf8')` will cause the
+             * output data to be interpreted as UTF-8 data, and passed as strings. Calling`readable.setEncoding('hex')` will cause the data to be encoded in hexadecimal
+             * string format.
+             *
+             * The `Readable` stream will properly handle multi-byte characters delivered
+             * through the stream that would otherwise become improperly decoded if simply
+             * pulled from the stream as `Buffer` objects.
+             *
+             * ```js
+             * const readable = getReadableStreamSomehow();
+             * readable.setEncoding('utf8');
+             * readable.on('data', (chunk) => {
+             *   assert.equal(typeof chunk, 'string');
+             *   console.log('Got %d characters of string data:', chunk.length);
+             * });
+             * ```
+             * @since v0.9.4
+             * @param encoding The encoding to use.
+             */
+            setEncoding(encoding: BufferEncoding): this;
+            /**
+             * The `readable.pause()` method will cause a stream in flowing mode to stop
+             * emitting `'data'` events, switching out of flowing mode. Any data that
+             * becomes available will remain in the internal buffer.
+             *
+             * ```js
+             * const readable = getReadableStreamSomehow();
+             * readable.on('data', (chunk) => {
+             *   console.log(`Received ${chunk.length} bytes of data.`);
+             *   readable.pause();
+             *   console.log('There will be no additional data for 1 second.');
+             *   setTimeout(() => {
+             *     console.log('Now data will start flowing again.');
+             *     readable.resume();
+             *   }, 1000);
+             * });
+             * ```
+             *
+             * The `readable.pause()` method has no effect if there is a `'readable'`event listener.
+             * @since v0.9.4
+             */
+            pause(): this;
+            /**
+             * The `readable.resume()` method causes an explicitly paused `Readable` stream to
+             * resume emitting `'data'` events, switching the stream into flowing mode.
+             *
+             * The `readable.resume()` method can be used to fully consume the data from a
+             * stream without actually processing any of that data:
+             *
+             * ```js
+             * getReadableStreamSomehow()
+             *   .resume()
+             *   .on('end', () => {
+             *     console.log('Reached the end, but did not read anything.');
+             *   });
+             * ```
+             *
+             * The `readable.resume()` method has no effect if there is a `'readable'`event listener.
+             * @since v0.9.4
+             */
+            resume(): this;
+            /**
+             * The `readable.isPaused()` method returns the current operating state of the`Readable`. This is used primarily by the mechanism that underlies the`readable.pipe()` method. In most
+             * typical cases, there will be no reason to
+             * use this method directly.
+             *
+             * ```js
+             * const readable = new stream.Readable();
+             *
+             * readable.isPaused(); // === false
+             * readable.pause();
+             * readable.isPaused(); // === true
+             * readable.resume();
+             * readable.isPaused(); // === false
+             * ```
+             * @since v0.11.14
+             */
+            isPaused(): boolean;
+            /**
+             * The `readable.unpipe()` method detaches a `Writable` stream previously attached
+             * using the {@link pipe} method.
+             *
+             * If the `destination` is not specified, then _all_ pipes are detached.
+             *
+             * If the `destination` is specified, but no pipe is set up for it, then
+             * the method does nothing.
+             *
+             * ```js
+             * const fs = require('fs');
+             * const readable = getReadableStreamSomehow();
+             * const writable = fs.createWriteStream('file.txt');
+             * // All the data from readable goes into 'file.txt',
+             * // but only for the first second.
+             * readable.pipe(writable);
+             * setTimeout(() => {
+             *   console.log('Stop writing to file.txt.');
+             *   readable.unpipe(writable);
+             *   console.log('Manually close the file stream.');
+             *   writable.end();
+             * }, 1000);
+             * ```
+             * @since v0.9.4
+             * @param destination Optional specific stream to unpipe
+             */
+            unpipe(destination?: NodeJS.WritableStream): this;
+            /**
+             * Passing `chunk` as `null` signals the end of the stream (EOF) and behaves the
+             * same as `readable.push(null)`, after which no more data can be written. The EOF
+             * signal is put at the end of the buffer and any buffered data will still be
+             * flushed.
+             *
+             * The `readable.unshift()` method pushes a chunk of data back into the internal
+             * buffer. This is useful in certain situations where a stream is being consumed by
+             * code that needs to "un-consume" some amount of data that it has optimistically
+             * pulled out of the source, so that the data can be passed on to some other party.
+             *
+             * The `stream.unshift(chunk)` method cannot be called after the `'end'` event
+             * has been emitted or a runtime error will be thrown.
+             *
+             * Developers using `stream.unshift()` often should consider switching to
+             * use of a `Transform` stream instead. See the `API for stream implementers` section for more information.
+             *
+             * ```js
+             * // Pull off a header delimited by \n\n.
+             * // Use unshift() if we get too much.
+             * // Call the callback with (error, header, stream).
+             * const { StringDecoder } = require('string_decoder');
+             * function parseHeader(stream, callback) {
+             *   stream.on('error', callback);
+             *   stream.on('readable', onReadable);
+             *   const decoder = new StringDecoder('utf8');
+             *   let header = '';
+             *   function onReadable() {
+             *     let chunk;
+             *     while (null !== (chunk = stream.read())) {
+             *       const str = decoder.write(chunk);
+             *       if (str.includes('\n\n')) {
+             *         // Found the header boundary.
+             *         const split = str.split(/\n\n/);
+             *         header += split.shift();
+             *         const remaining = split.join('\n\n');
+             *         const buf = Buffer.from(remaining, 'utf8');
+             *         stream.removeListener('error', callback);
+             *         // Remove the 'readable' listener before unshifting.
+             *         stream.removeListener('readable', onReadable);
+             *         if (buf.length)
+             *           stream.unshift(buf);
+             *         // Now the body of the message can be read from the stream.
+             *         callback(null, header, stream);
+             *         return;
+             *       }
+             *       // Still reading the header.
+             *       header += str;
+             *     }
+             *   }
+             * }
+             * ```
+             *
+             * Unlike {@link push}, `stream.unshift(chunk)` will not
+             * end the reading process by resetting the internal reading state of the stream.
+             * This can cause unexpected results if `readable.unshift()` is called during a
+             * read (i.e. from within a {@link _read} implementation on a
+             * custom stream). Following the call to `readable.unshift()` with an immediate {@link push} will reset the reading state appropriately,
+             * however it is best to simply avoid calling `readable.unshift()` while in the
+             * process of performing a read.
+             * @since v0.9.11
+             * @param chunk Chunk of data to unshift onto the read queue. For streams not operating in object mode, `chunk` must be a string, `Buffer`, `Uint8Array` or `null`. For object mode
+             * streams, `chunk` may be any JavaScript value.
+             * @param encoding Encoding of string chunks. Must be a valid `Buffer` encoding, such as `'utf8'` or `'ascii'`.
+             */
+            unshift(chunk: any, encoding?: BufferEncoding): void;
+            /**
+             * Prior to Node.js 0.10, streams did not implement the entire `stream` module API
+             * as it is currently defined. (See `Compatibility` for more information.)
+             *
+             * When using an older Node.js library that emits `'data'` events and has a {@link pause} method that is advisory only, the`readable.wrap()` method can be used to create a `Readable`
+             * stream that uses
+             * the old stream as its data source.
+             *
+             * It will rarely be necessary to use `readable.wrap()` but the method has been
+             * provided as a convenience for interacting with older Node.js applications and
+             * libraries.
+             *
+             * ```js
+             * const { OldReader } = require('./old-api-module.js');
+             * const { Readable } = require('stream');
+             * const oreader = new OldReader();
+             * const myReader = new Readable().wrap(oreader);
+             *
+             * myReader.on('readable', () => {
+             *   myReader.read(); // etc.
+             * });
+             * ```
+             * @since v0.9.4
+             * @param stream An "old style" readable stream
+             */
+            wrap(stream: NodeJS.ReadableStream): this;
+            push(chunk: any, encoding?: BufferEncoding): boolean;
+            _destroy(error: Error | null, callback: (error?: Error | null) => void): void;
+            /**
+             * Destroy the stream. Optionally emit an `'error'` event, and emit a `'close'`event (unless `emitClose` is set to `false`). After this call, the readable
+             * stream will release any internal resources and subsequent calls to `push()`will be ignored.
+             *
+             * Once `destroy()` has been called any further calls will be a no-op and no
+             * further errors except from `_destroy()` may be emitted as `'error'`.
+             *
+             * Implementors should not override this method, but instead implement `readable._destroy()`.
+             * @since v8.0.0
+             * @param error Error which will be passed as payload in `'error'` event
+             */
+            destroy(error?: Error): this;
+            /**
+             * Event emitter
+             * The defined events on documents including:
+             * 1. close
+             * 2. data
+             * 3. end
+             * 4. error
+             * 5. pause
+             * 6. readable
+             * 7. resume
+             */
+            addListener(event: 'close', listener: () => void): this;
+            addListener(event: 'data', listener: (chunk: any) => void): this;
+            addListener(event: 'end', listener: () => void): this;
+            addListener(event: 'error', listener: (err: Error) => void): this;
+            addListener(event: 'pause', listener: () => void): this;
+            addListener(event: 'readable', listener: () => void): this;
+            addListener(event: 'resume', listener: () => void): this;
+            addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+            emit(event: 'close'): boolean;
+            emit(event: 'data', chunk: any): boolean;
+            emit(event: 'end'): boolean;
+            emit(event: 'error', err: Error): boolean;
+            emit(event: 'pause'): boolean;
+            emit(event: 'readable'): boolean;
+            emit(event: 'resume'): boolean;
+            emit(event: string | symbol, ...args: any[]): boolean;
+            on(event: 'close', listener: () => void): this;
+            on(event: 'data', listener: (chunk: any) => void): this;
+            on(event: 'end', listener: () => void): this;
+            on(event: 'error', listener: (err: Error) => void): this;
+            on(event: 'pause', listener: () => void): this;
+            on(event: 'readable', listener: () => void): this;
+            on(event: 'resume', listener: () => void): this;
+            on(event: string | symbol, listener: (...args: any[]) => void): this;
+            once(event: 'close', listener: () => void): this;
+            once(event: 'data', listener: (chunk: any) => void): this;
+            once(event: 'end', listener: () => void): this;
+            once(event: 'error', listener: (err: Error) => void): this;
+            once(event: 'pause', listener: () => void): this;
+            once(event: 'readable', listener: () => void): this;
+            once(event: 'resume', listener: () => void): this;
+            once(event: string | symbol, listener: (...args: any[]) => void): this;
+            prependListener(event: 'close', listener: () => void): this;
+            prependListener(event: 'data', listener: (chunk: any) => void): this;
+            prependListener(event: 'end', listener: () => void): this;
+            prependListener(event: 'error', listener: (err: Error) => void): this;
+            prependListener(event: 'pause', listener: () => void): this;
+            prependListener(event: 'readable', listener: () => void): this;
+            prependListener(event: 'resume', listener: () => void): this;
+            prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+            prependOnceListener(event: 'close', listener: () => void): this;
+            prependOnceListener(event: 'data', listener: (chunk: any) => void): this;
+            prependOnceListener(event: 'end', listener: () => void): this;
+            prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+            prependOnceListener(event: 'pause', listener: () => void): this;
+            prependOnceListener(event: 'readable', listener: () => void): this;
+            prependOnceListener(event: 'resume', listener: () => void): this;
+            prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+            removeListener(event: 'close', listener: () => void): this;
+            removeListener(event: 'data', listener: (chunk: any) => void): this;
+            removeListener(event: 'end', listener: () => void): this;
+            removeListener(event: 'error', listener: (err: Error) => void): this;
+            removeListener(event: 'pause', listener: () => void): this;
+            removeListener(event: 'readable', listener: () => void): this;
+            removeListener(event: 'resume', listener: () => void): this;
+            removeListener(event: string | symbol, listener: (...args: any[]) => void): this;
+            [Symbol.asyncIterator](): AsyncIterableIterator<any>;
+        }
+        interface WritableOptions extends StreamOptions<Writable> {
+            decodeStrings?: boolean | undefined;
+            defaultEncoding?: BufferEncoding | undefined;
+            write?(this: Writable, chunk: any, encoding: BufferEncoding, callback: (error?: Error | null) => void): void;
+            writev?(
+                this: Writable,
+                chunks: Array<{
+                    chunk: any;
+                    encoding: BufferEncoding;
+                }>,
+                callback: (error?: Error | null) => void
+            ): void;
+            final?(this: Writable, callback: (error?: Error | null) => void): void;
+        }
+        /**
+         * @since v0.9.4
+         */
+        class Writable extends Stream implements NodeJS.WritableStream {
+            /**
+             * A utility method for creating a `Writable` from a web `WritableStream`.
+             * @since v17.0.0
+             * @experimental
+             */
+            static fromWeb(writableStream: streamWeb.WritableStream, options?: Pick<WritableOptions, 'decodeStrings' | 'highWaterMark' | 'objectMode' | 'signal'>): Writable;
+            /**
+             * A utility method for creating a web `WritableStream` from a `Writable`.
+             * @since v17.0.0
+             * @experimental
+             */
+            static toWeb(streamWritable: Writable): streamWeb.WritableStream;
+            /**
+             * Is `true` if it is safe to call `writable.write()`, which means
+             * the stream has not been destroyed, errored or ended.
+             * @since v11.4.0
+             */
+            readonly writable: boolean;
+            /**
+             * Is `true` after `writable.end()` has been called. This property
+             * does not indicate whether the data has been flushed, for this use `writable.writableFinished` instead.
+             * @since v12.9.0
+             */
+            readonly writableEnded: boolean;
+            /**
+             * Is set to `true` immediately before the `'finish'` event is emitted.
+             * @since v12.6.0
+             */
+            readonly writableFinished: boolean;
+            /**
+             * Return the value of `highWaterMark` passed when creating this `Writable`.
+             * @since v9.3.0
+             */
+            readonly writableHighWaterMark: number;
+            /**
+             * This property contains the number of bytes (or objects) in the queue
+             * ready to be written. The value provides introspection data regarding
+             * the status of the `highWaterMark`.
+             * @since v9.4.0
+             */
+            readonly writableLength: number;
+            /**
+             * Getter for the property `objectMode` of a given `Writable` stream.
+             * @since v12.3.0
+             */
+            readonly writableObjectMode: boolean;
+            /**
+             * Number of times `writable.uncork()` needs to be
+             * called in order to fully uncork the stream.
+             * @since v13.2.0, v12.16.0
+             */
+            readonly writableCorked: number;
+            /**
+             * Is `true` after `writable.destroy()` has been called.
+             * @since v8.0.0
+             */
+            destroyed: boolean;
+            /**
+             * Is true after 'close' has been emitted.
+             * @since v8.0.0
+             */
+            readonly closed: boolean;
+            /**
+             * Returns error if the stream has been destroyed with an error.
+             * @since v18.0.0
+             */
+            readonly errored: Error | null;
+            /**
+             * Is `true` if the stream's buffer has been full and stream will emit 'drain'.
+             * @since v15.2.0, v14.17.0
+             */
+            readonly writableNeedDrain: boolean;
+            constructor(opts?: WritableOptions);
+            _write(chunk: any, encoding: BufferEncoding, callback: (error?: Error | null) => void): void;
+            _writev?(
+                chunks: Array<{
+                    chunk: any;
+                    encoding: BufferEncoding;
+                }>,
+                callback: (error?: Error | null) => void
+            ): void;
+            _construct?(callback: (error?: Error | null) => void): void;
+            _destroy(error: Error | null, callback: (error?: Error | null) => void): void;
+            _final(callback: (error?: Error | null) => void): void;
+            /**
+             * The `writable.write()` method writes some data to the stream, and calls the
+             * supplied `callback` once the data has been fully handled. If an error
+             * occurs, the `callback` will be called with the error as its
+             * first argument. The `callback` is called asynchronously and before `'error'` is
+             * emitted.
+             *
+             * The return value is `true` if the internal buffer is less than the`highWaterMark` configured when the stream was created after admitting `chunk`.
+             * If `false` is returned, further attempts to write data to the stream should
+             * stop until the `'drain'` event is emitted.
+             *
+             * While a stream is not draining, calls to `write()` will buffer `chunk`, and
+             * return false. Once all currently buffered chunks are drained (accepted for
+             * delivery by the operating system), the `'drain'` event will be emitted.
+             * Once `write()` returns false, do not write more chunks
+             * until the `'drain'` event is emitted. While calling `write()` on a stream that
+             * is not draining is allowed, Node.js will buffer all written chunks until
+             * maximum memory usage occurs, at which point it will abort unconditionally.
+             * Even before it aborts, high memory usage will cause poor garbage collector
+             * performance and high RSS (which is not typically released back to the system,
+             * even after the memory is no longer required). Since TCP sockets may never
+             * drain if the remote peer does not read the data, writing a socket that is
+             * not draining may lead to a remotely exploitable vulnerability.
+             *
+             * Writing data while the stream is not draining is particularly
+             * problematic for a `Transform`, because the `Transform` streams are paused
+             * by default until they are piped or a `'data'` or `'readable'` event handler
+             * is added.
+             *
+             * If the data to be written can be generated or fetched on demand, it is
+             * recommended to encapsulate the logic into a `Readable` and use {@link pipe}. However, if calling `write()` is preferred, it is
+             * possible to respect backpressure and avoid memory issues using the `'drain'` event:
+             *
+             * ```js
+             * function write(data, cb) {
+             *   if (!stream.write(data)) {
+             *     stream.once('drain', cb);
+             *   } else {
+             *     process.nextTick(cb);
+             *   }
+             * }
+             *
+             * // Wait for cb to be called before doing any other write.
+             * write('hello', () => {
+             *   console.log('Write completed, do more writes now.');
+             * });
+             * ```
+             *
+             * A `Writable` stream in object mode will always ignore the `encoding` argument.
+             * @since v0.9.4
+             * @param chunk Optional data to write. For streams not operating in object mode, `chunk` must be a string, `Buffer` or `Uint8Array`. For object mode streams, `chunk` may be any
+             * JavaScript value other than `null`.
+             * @param [encoding='utf8'] The encoding, if `chunk` is a string.
+             * @param callback Callback for when this chunk of data is flushed.
+             * @return `false` if the stream wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+             */
+            write(chunk: any, callback?: (error: Error | null | undefined) => void): boolean;
+            write(chunk: any, encoding: BufferEncoding, callback?: (error: Error | null | undefined) => void): boolean;
+            /**
+             * The `writable.setDefaultEncoding()` method sets the default `encoding` for a `Writable` stream.
+             * @since v0.11.15
+             * @param encoding The new default encoding
+             */
+            setDefaultEncoding(encoding: BufferEncoding): this;
+            /**
+             * Calling the `writable.end()` method signals that no more data will be written
+             * to the `Writable`. The optional `chunk` and `encoding` arguments allow one
+             * final additional chunk of data to be written immediately before closing the
+             * stream.
+             *
+             * Calling the {@link write} method after calling {@link end} will raise an error.
+             *
+             * ```js
+             * // Write 'hello, ' and then end with 'world!'.
+             * const fs = require('fs');
+             * const file = fs.createWriteStream('example.txt');
+             * file.write('hello, ');
+             * file.end('world!');
+             * // Writing more now is not allowed!
+             * ```
+             * @since v0.9.4
+             * @param chunk Optional data to write. For streams not operating in object mode, `chunk` must be a string, `Buffer` or `Uint8Array`. For object mode streams, `chunk` may be any
+             * JavaScript value other than `null`.
+             * @param encoding The encoding if `chunk` is a string
+             * @param callback Callback for when the stream is finished.
+             */
+            end(cb?: () => void): this;
+            end(chunk: any, cb?: () => void): this;
+            end(chunk: any, encoding: BufferEncoding, cb?: () => void): this;
+            /**
+             * The `writable.cork()` method forces all written data to be buffered in memory.
+             * The buffered data will be flushed when either the {@link uncork} or {@link end} methods are called.
+             *
+             * The primary intent of `writable.cork()` is to accommodate a situation in which
+             * several small chunks are written to the stream in rapid succession. Instead of
+             * immediately forwarding them to the underlying destination, `writable.cork()`buffers all the chunks until `writable.uncork()` is called, which will pass them
+             * all to `writable._writev()`, if present. This prevents a head-of-line blocking
+             * situation where data is being buffered while waiting for the first small chunk
+             * to be processed. However, use of `writable.cork()` without implementing`writable._writev()` may have an adverse effect on throughput.
+             *
+             * See also: `writable.uncork()`, `writable._writev()`.
+             * @since v0.11.2
+             */
+            cork(): void;
+            /**
+             * The `writable.uncork()` method flushes all data buffered since {@link cork} was called.
+             *
+             * When using `writable.cork()` and `writable.uncork()` to manage the buffering
+             * of writes to a stream, defer calls to `writable.uncork()` using`process.nextTick()`. Doing so allows batching of all`writable.write()` calls that occur within a given Node.js event
+             * loop phase.
+             *
+             * ```js
+             * stream.cork();
+             * stream.write('some ');
+             * stream.write('data ');
+             * process.nextTick(() => stream.uncork());
+             * ```
+             *
+             * If the `writable.cork()` method is called multiple times on a stream, the
+             * same number of calls to `writable.uncork()` must be called to flush the buffered
+             * data.
+             *
+             * ```js
+             * stream.cork();
+             * stream.write('some ');
+             * stream.cork();
+             * stream.write('data ');
+             * process.nextTick(() => {
+             *   stream.uncork();
+             *   // The data will not be flushed until uncork() is called a second time.
+             *   stream.uncork();
+             * });
+             * ```
+             *
+             * See also: `writable.cork()`.
+             * @since v0.11.2
+             */
+            uncork(): void;
+            /**
+             * Destroy the stream. Optionally emit an `'error'` event, and emit a `'close'`event (unless `emitClose` is set to `false`). After this call, the writable
+             * stream has ended and subsequent calls to `write()` or `end()` will result in
+             * an `ERR_STREAM_DESTROYED` error.
+             * This is a destructive and immediate way to destroy a stream. Previous calls to`write()` may not have drained, and may trigger an `ERR_STREAM_DESTROYED` error.
+             * Use `end()` instead of destroy if data should flush before close, or wait for
+             * the `'drain'` event before destroying the stream.
+             *
+             * Once `destroy()` has been called any further calls will be a no-op and no
+             * further errors except from `_destroy()` may be emitted as `'error'`.
+             *
+             * Implementors should not override this method,
+             * but instead implement `writable._destroy()`.
+             * @since v8.0.0
+             * @param error Optional, an error to emit with `'error'` event.
+             */
+            destroy(error?: Error): this;
+            /**
+             * Event emitter
+             * The defined events on documents including:
+             * 1. close
+             * 2. drain
+             * 3. error
+             * 4. finish
+             * 5. pipe
+             * 6. unpipe
+             */
+            addListener(event: 'close', listener: () => void): this;
+            addListener(event: 'drain', listener: () => void): this;
+            addListener(event: 'error', listener: (err: Error) => void): this;
+            addListener(event: 'finish', listener: () => void): this;
+            addListener(event: 'pipe', listener: (src: Readable) => void): this;
+            addListener(event: 'unpipe', listener: (src: Readable) => void): this;
+            addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+            emit(event: 'close'): boolean;
+            emit(event: 'drain'): boolean;
+            emit(event: 'error', err: Error): boolean;
+            emit(event: 'finish'): boolean;
+            emit(event: 'pipe', src: Readable): boolean;
+            emit(event: 'unpipe', src: Readable): boolean;
+            emit(event: string | symbol, ...args: any[]): boolean;
+            on(event: 'close', listener: () => void): this;
+            on(event: 'drain', listener: () => void): this;
+            on(event: 'error', listener: (err: Error) => void): this;
+            on(event: 'finish', listener: () => void): this;
+            on(event: 'pipe', listener: (src: Readable) => void): this;
+            on(event: 'unpipe', listener: (src: Readable) => void): this;
+            on(event: string | symbol, listener: (...args: any[]) => void): this;
+            once(event: 'close', listener: () => void): this;
+            once(event: 'drain', listener: () => void): this;
+            once(event: 'error', listener: (err: Error) => void): this;
+            once(event: 'finish', listener: () => void): this;
+            once(event: 'pipe', listener: (src: Readable) => void): this;
+            once(event: 'unpipe', listener: (src: Readable) => void): this;
+            once(event: string | symbol, listener: (...args: any[]) => void): this;
+            prependListener(event: 'close', listener: () => void): this;
+            prependListener(event: 'drain', listener: () => void): this;
+            prependListener(event: 'error', listener: (err: Error) => void): this;
+            prependListener(event: 'finish', listener: () => void): this;
+            prependListener(event: 'pipe', listener: (src: Readable) => void): this;
+            prependListener(event: 'unpipe', listener: (src: Readable) => void): this;
+            prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+            prependOnceListener(event: 'close', listener: () => void): this;
+            prependOnceListener(event: 'drain', listener: () => void): this;
+            prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+            prependOnceListener(event: 'finish', listener: () => void): this;
+            prependOnceListener(event: 'pipe', listener: (src: Readable) => void): this;
+            prependOnceListener(event: 'unpipe', listener: (src: Readable) => void): this;
+            prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+            removeListener(event: 'close', listener: () => void): this;
+            removeListener(event: 'drain', listener: () => void): this;
+            removeListener(event: 'error', listener: (err: Error) => void): this;
+            removeListener(event: 'finish', listener: () => void): this;
+            removeListener(event: 'pipe', listener: (src: Readable) => void): this;
+            removeListener(event: 'unpipe', listener: (src: Readable) => void): this;
+            removeListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        }
+        interface DuplexOptions extends ReadableOptions, WritableOptions {
+            allowHalfOpen?: boolean | undefined;
+            readableObjectMode?: boolean | undefined;
+            writableObjectMode?: boolean | undefined;
+            readableHighWaterMark?: number | undefined;
+            writableHighWaterMark?: number | undefined;
+            writableCorked?: number | undefined;
+            construct?(this: Duplex, callback: (error?: Error | null) => void): void;
+            read?(this: Duplex, size: number): void;
+            write?(this: Duplex, chunk: any, encoding: BufferEncoding, callback: (error?: Error | null) => void): void;
+            writev?(
+                this: Duplex,
+                chunks: Array<{
+                    chunk: any;
+                    encoding: BufferEncoding;
+                }>,
+                callback: (error?: Error | null) => void
+            ): void;
+            final?(this: Duplex, callback: (error?: Error | null) => void): void;
+            destroy?(this: Duplex, error: Error | null, callback: (error: Error | null) => void): void;
+        }
+        /**
+         * Duplex streams are streams that implement both the `Readable` and `Writable` interfaces.
+         *
+         * Examples of `Duplex` streams include:
+         *
+         * * `TCP sockets`
+         * * `zlib streams`
+         * * `crypto streams`
+         * @since v0.9.4
+         */
+        class Duplex extends Readable implements Writable {
+            readonly writable: boolean;
+            readonly writableEnded: boolean;
+            readonly writableFinished: boolean;
+            readonly writableHighWaterMark: number;
+            readonly writableLength: number;
+            readonly writableObjectMode: boolean;
+            readonly writableCorked: number;
+            readonly writableNeedDrain: boolean;
+            readonly closed: boolean;
+            readonly errored: Error | null;
+            /**
+             * If `false` then the stream will automatically end the writable side when the
+             * readable side ends. Set initially by the `allowHalfOpen` constructor option,
+             * which defaults to `false`.
+             *
+             * This can be changed manually to change the half-open behavior of an existing`Duplex` stream instance, but must be changed before the `'end'` event is
+             * emitted.
+             * @since v0.9.4
+             */
+            allowHalfOpen: boolean;
+            constructor(opts?: DuplexOptions);
+            /**
+             * A utility method for creating duplex streams.
+             *
+             * - `Stream` converts writable stream into writable `Duplex` and readable stream
+             *   to `Duplex`.
+             * - `Blob` converts into readable `Duplex`.
+             * - `string` converts into readable `Duplex`.
+             * - `ArrayBuffer` converts into readable `Duplex`.
+             * - `AsyncIterable` converts into a readable `Duplex`. Cannot yield `null`.
+             * - `AsyncGeneratorFunction` converts into a readable/writable transform
+             *   `Duplex`. Must take a source `AsyncIterable` as first parameter. Cannot yield
+             *   `null`.
+             * - `AsyncFunction` converts into a writable `Duplex`. Must return
+             *   either `null` or `undefined`
+             * - `Object ({ writable, readable })` converts `readable` and
+             *   `writable` into `Stream` and then combines them into `Duplex` where the
+             *   `Duplex` will write to the `writable` and read from the `readable`.
+             * - `Promise` converts into readable `Duplex`. Value `null` is ignored.
+             *
+             * @since v16.8.0
+             */
+            static from(src: Stream | Blob | ArrayBuffer | string | Iterable<any> | AsyncIterable<any> | AsyncGeneratorFunction | Promise<any> | Object): Duplex;
+            _write(chunk: any, encoding: BufferEncoding, callback: (error?: Error | null) => void): void;
+            _writev?(
+                chunks: Array<{
+                    chunk: any;
+                    encoding: BufferEncoding;
+                }>,
+                callback: (error?: Error | null) => void
+            ): void;
+            _destroy(error: Error | null, callback: (error: Error | null) => void): void;
+            _final(callback: (error?: Error | null) => void): void;
+            write(chunk: any, encoding?: BufferEncoding, cb?: (error: Error | null | undefined) => void): boolean;
+            write(chunk: any, cb?: (error: Error | null | undefined) => void): boolean;
+            setDefaultEncoding(encoding: BufferEncoding): this;
+            end(cb?: () => void): this;
+            end(chunk: any, cb?: () => void): this;
+            end(chunk: any, encoding?: BufferEncoding, cb?: () => void): this;
+            cork(): void;
+            uncork(): void;
+        }
+        type TransformCallback = (error?: Error | null, data?: any) => void;
+        interface TransformOptions extends DuplexOptions {
+            construct?(this: Transform, callback: (error?: Error | null) => void): void;
+            read?(this: Transform, size: number): void;
+            write?(this: Transform, chunk: any, encoding: BufferEncoding, callback: (error?: Error | null) => void): void;
+            writev?(
+                this: Transform,
+                chunks: Array<{
+                    chunk: any;
+                    encoding: BufferEncoding;
+                }>,
+                callback: (error?: Error | null) => void
+            ): void;
+            final?(this: Transform, callback: (error?: Error | null) => void): void;
+            destroy?(this: Transform, error: Error | null, callback: (error: Error | null) => void): void;
+            transform?(this: Transform, chunk: any, encoding: BufferEncoding, callback: TransformCallback): void;
+            flush?(this: Transform, callback: TransformCallback): void;
+        }
+        /**
+         * Transform streams are `Duplex` streams where the output is in some way
+         * related to the input. Like all `Duplex` streams, `Transform` streams
+         * implement both the `Readable` and `Writable` interfaces.
+         *
+         * Examples of `Transform` streams include:
+         *
+         * * `zlib streams`
+         * * `crypto streams`
+         * @since v0.9.4
+         */
+        class Transform extends Duplex {
+            constructor(opts?: TransformOptions);
+            _transform(chunk: any, encoding: BufferEncoding, callback: TransformCallback): void;
+            _flush(callback: TransformCallback): void;
+        }
+        /**
+         * The `stream.PassThrough` class is a trivial implementation of a `Transform` stream that simply passes the input bytes across to the output. Its purpose is
+         * primarily for examples and testing, but there are some use cases where`stream.PassThrough` is useful as a building block for novel sorts of streams.
+         */
+        class PassThrough extends Transform {}
+        /**
+         * Attaches an AbortSignal to a readable or writeable stream. This lets code
+         * control stream destruction using an `AbortController`.
+         *
+         * Calling `abort` on the `AbortController` corresponding to the passed`AbortSignal` will behave the same way as calling `.destroy(new AbortError())`on the stream.
+         *
+         * ```js
+         * const fs = require('fs');
+         *
+         * const controller = new AbortController();
+         * const read = addAbortSignal(
+         *   controller.signal,
+         *   fs.createReadStream(('object.json'))
+         * );
+         * // Later, abort the operation closing the stream
+         * controller.abort();
+         * ```
+         *
+         * Or using an `AbortSignal` with a readable stream as an async iterable:
+         *
+         * ```js
+         * const controller = new AbortController();
+         * setTimeout(() => controller.abort(), 10_000); // set a timeout
+         * const stream = addAbortSignal(
+         *   controller.signal,
+         *   fs.createReadStream(('object.json'))
+         * );
+         * (async () => {
+         *   try {
+         *     for await (const chunk of stream) {
+         *       await process(chunk);
+         *     }
+         *   } catch (e) {
+         *     if (e.name === 'AbortError') {
+         *       // The operation was cancelled
+         *     } else {
+         *       throw e;
+         *     }
+         *   }
+         * })();
+         * ```
+         * @since v15.4.0
+         * @param signal A signal representing possible cancellation
+         * @param stream a stream to attach a signal to
+         */
+        function addAbortSignal<T extends Stream>(signal: AbortSignal, stream: T): T;
+        interface FinishedOptions extends Abortable {
+            error?: boolean | undefined;
+            readable?: boolean | undefined;
+            writable?: boolean | undefined;
+        }
+        /**
+         * A function to get notified when a stream is no longer readable, writable
+         * or has experienced an error or a premature close event.
+         *
+         * ```js
+         * const { finished } = require('stream');
+         *
+         * const rs = fs.createReadStream('archive.tar');
+         *
+         * finished(rs, (err) => {
+         *   if (err) {
+         *     console.error('Stream failed.', err);
+         *   } else {
+         *     console.log('Stream is done reading.');
+         *   }
+         * });
+         *
+         * rs.resume(); // Drain the stream.
+         * ```
+         *
+         * Especially useful in error handling scenarios where a stream is destroyed
+         * prematurely (like an aborted HTTP request), and will not emit `'end'`or `'finish'`.
+         *
+         * The `finished` API provides promise version:
+         *
+         * ```js
+         * const { finished } = require('stream/promises');
+         *
+         * const rs = fs.createReadStream('archive.tar');
+         *
+         * async function run() {
+         *   await finished(rs);
+         *   console.log('Stream is done reading.');
+         * }
+         *
+         * run().catch(console.error);
+         * rs.resume(); // Drain the stream.
+         * ```
+         *
+         * `stream.finished()` leaves dangling event listeners (in particular`'error'`, `'end'`, `'finish'` and `'close'`) after `callback` has been
+         * invoked. The reason for this is so that unexpected `'error'` events (due to
+         * incorrect stream implementations) do not cause unexpected crashes.
+         * If this is unwanted behavior then the returned cleanup function needs to be
+         * invoked in the callback:
+         *
+         * ```js
+         * const cleanup = finished(rs, (err) => {
+         *   cleanup();
+         *   // ...
+         * });
+         * ```
+         * @since v10.0.0
+         * @param stream A readable and/or writable stream.
+         * @param callback A callback function that takes an optional error argument.
+         * @return A cleanup function which removes all registered listeners.
+         */
+        function finished(stream: NodeJS.ReadableStream | NodeJS.WritableStream | NodeJS.ReadWriteStream, options: FinishedOptions, callback: (err?: NodeJS.ErrnoException | null) => void): () => void;
+        function finished(stream: NodeJS.ReadableStream | NodeJS.WritableStream | NodeJS.ReadWriteStream, callback: (err?: NodeJS.ErrnoException | null) => void): () => void;
+        namespace finished {
+            function __promisify__(stream: NodeJS.ReadableStream | NodeJS.WritableStream | NodeJS.ReadWriteStream, options?: FinishedOptions): Promise<void>;
+        }
+        type PipelineSourceFunction<T> = () => Iterable<T> | AsyncIterable<T>;
+        type PipelineSource<T> = Iterable<T> | AsyncIterable<T> | NodeJS.ReadableStream | PipelineSourceFunction<T>;
+        type PipelineTransform<S extends PipelineTransformSource<any>, U> =
+            | NodeJS.ReadWriteStream
+            | ((source: S extends (...args: any[]) => Iterable<infer ST> | AsyncIterable<infer ST> ? AsyncIterable<ST> : S) => AsyncIterable<U>);
+        type PipelineTransformSource<T> = PipelineSource<T> | PipelineTransform<any, T>;
+        type PipelineDestinationIterableFunction<T> = (source: AsyncIterable<T>) => AsyncIterable<any>;
+        type PipelineDestinationPromiseFunction<T, P> = (source: AsyncIterable<T>) => Promise<P>;
+        type PipelineDestination<S extends PipelineTransformSource<any>, P> = S extends PipelineTransformSource<infer ST>
+            ? NodeJS.WritableStream | PipelineDestinationIterableFunction<ST> | PipelineDestinationPromiseFunction<ST, P>
+            : never;
+        type PipelineCallback<S extends PipelineDestination<any, any>> = S extends PipelineDestinationPromiseFunction<any, infer P>
+            ? (err: NodeJS.ErrnoException | null, value: P) => void
+            : (err: NodeJS.ErrnoException | null) => void;
+        type PipelinePromise<S extends PipelineDestination<any, any>> = S extends PipelineDestinationPromiseFunction<any, infer P> ? Promise<P> : Promise<void>;
+        interface PipelineOptions {
+            signal: AbortSignal;
+        }
+        /**
+         * A module method to pipe between streams and generators forwarding errors and
+         * properly cleaning up and provide a callback when the pipeline is complete.
+         *
+         * ```js
+         * const { pipeline } = require('stream');
+         * const fs = require('fs');
+         * const zlib = require('zlib');
+         *
+         * // Use the pipeline API to easily pipe a series of streams
+         * // together and get notified when the pipeline is fully done.
+         *
+         * // A pipeline to gzip a potentially huge tar file efficiently:
+         *
+         * pipeline(
+         *   fs.createReadStream('archive.tar'),
+         *   zlib.createGzip(),
+         *   fs.createWriteStream('archive.tar.gz'),
+         *   (err) => {
+         *     if (err) {
+         *       console.error('Pipeline failed.', err);
+         *     } else {
+         *       console.log('Pipeline succeeded.');
+         *     }
+         *   }
+         * );
+         * ```
+         *
+         * The `pipeline` API provides a promise version, which can also
+         * receive an options argument as the last parameter with a`signal` `AbortSignal` property. When the signal is aborted,`destroy` will be called on the underlying pipeline, with
+         * an`AbortError`.
+         *
+         * ```js
+         * const { pipeline } = require('stream/promises');
+         *
+         * async function run() {
+         *   await pipeline(
+         *     fs.createReadStream('archive.tar'),
+         *     zlib.createGzip(),
+         *     fs.createWriteStream('archive.tar.gz')
+         *   );
+         *   console.log('Pipeline succeeded.');
+         * }
+         *
+         * run().catch(console.error);
+         * ```
+         *
+         * To use an `AbortSignal`, pass it inside an options object,
+         * as the last argument:
+         *
+         * ```js
+         * const { pipeline } = require('stream/promises');
+         *
+         * async function run() {
+         *   const ac = new AbortController();
+         *   const signal = ac.signal;
+         *
+         *   setTimeout(() => ac.abort(), 1);
+         *   await pipeline(
+         *     fs.createReadStream('archive.tar'),
+         *     zlib.createGzip(),
+         *     fs.createWriteStream('archive.tar.gz'),
+         *     { signal },
+         *   );
+         * }
+         *
+         * run().catch(console.error); // AbortError
+         * ```
+         *
+         * The `pipeline` API also supports async generators:
+         *
+         * ```js
+         * const { pipeline } = require('stream/promises');
+         * const fs = require('fs');
+         *
+         * async function run() {
+         *   await pipeline(
+         *     fs.createReadStream('lowercase.txt'),
+         *     async function* (source, { signal }) {
+         *       source.setEncoding('utf8');  // Work with strings rather than `Buffer`s.
+         *       for await (const chunk of source) {
+         *         yield await processChunk(chunk, { signal });
+         *       }
+         *     },
+         *     fs.createWriteStream('uppercase.txt')
+         *   );
+         *   console.log('Pipeline succeeded.');
+         * }
+         *
+         * run().catch(console.error);
+         * ```
+         *
+         * Remember to handle the `signal` argument passed into the async generator.
+         * Especially in the case where the async generator is the source for the
+         * pipeline (i.e. first argument) or the pipeline will never complete.
+         *
+         * ```js
+         * const { pipeline } = require('stream/promises');
+         * const fs = require('fs');
+         *
+         * async function run() {
+         *   await pipeline(
+         *     async function* ({ signal }) {
+         *       await someLongRunningfn({ signal });
+         *       yield 'asd';
+         *     },
+         *     fs.createWriteStream('uppercase.txt')
+         *   );
+         *   console.log('Pipeline succeeded.');
+         * }
+         *
+         * run().catch(console.error);
+         * ```
+         *
+         * `stream.pipeline()` will call `stream.destroy(err)` on all streams except:
+         *
+         * * `Readable` streams which have emitted `'end'` or `'close'`.
+         * * `Writable` streams which have emitted `'finish'` or `'close'`.
+         *
+         * `stream.pipeline()` leaves dangling event listeners on the streams
+         * after the `callback` has been invoked. In the case of reuse of streams after
+         * failure, this can cause event listener leaks and swallowed errors. If the last
+         * stream is readable, dangling event listeners will be removed so that the last
+         * stream can be consumed later.
+         *
+         * `stream.pipeline()` closes all the streams when an error is raised.
+         * The `IncomingRequest` usage with `pipeline` could lead to an unexpected behavior
+         * once it would destroy the socket without sending the expected response.
+         * See the example below:
+         *
+         * ```js
+         * const fs = require('fs');
+         * const http = require('http');
+         * const { pipeline } = require('stream');
+         *
+         * const server = http.createServer((req, res) => {
+         *   const fileStream = fs.createReadStream('./fileNotExist.txt');
+         *   pipeline(fileStream, res, (err) => {
+         *     if (err) {
+         *       console.log(err); // No such file
+         *       // this message can't be sent once `pipeline` already destroyed the socket
+         *       return res.end('error!!!');
+         *     }
+         *   });
+         * });
+         * ```
+         * @since v10.0.0
+         * @param callback Called when the pipeline is fully done.
+         */
+        function pipeline<A extends PipelineSource<any>, B extends PipelineDestination<A, any>>(
+            source: A,
+            destination: B,
+            callback?: PipelineCallback<B>
+        ): B extends NodeJS.WritableStream ? B : NodeJS.WritableStream;
+        function pipeline<A extends PipelineSource<any>, T1 extends PipelineTransform<A, any>, B extends PipelineDestination<T1, any>>(
+            source: A,
+            transform1: T1,
+            destination: B,
+            callback?: PipelineCallback<B>
+        ): B extends NodeJS.WritableStream ? B : NodeJS.WritableStream;
+        function pipeline<A extends PipelineSource<any>, T1 extends PipelineTransform<A, any>, T2 extends PipelineTransform<T1, any>, B extends PipelineDestination<T2, any>>(
+            source: A,
+            transform1: T1,
+            transform2: T2,
+            destination: B,
+            callback?: PipelineCallback<B>
+        ): B extends NodeJS.WritableStream ? B : NodeJS.WritableStream;
+        function pipeline<
+            A extends PipelineSource<any>,
+            T1 extends PipelineTransform<A, any>,
+            T2 extends PipelineTransform<T1, any>,
+            T3 extends PipelineTransform<T2, any>,
+            B extends PipelineDestination<T3, any>
+        >(source: A, transform1: T1, transform2: T2, transform3: T3, destination: B, callback?: PipelineCallback<B>): B extends NodeJS.WritableStream ? B : NodeJS.WritableStream;
+        function pipeline<
+            A extends PipelineSource<any>,
+            T1 extends PipelineTransform<A, any>,
+            T2 extends PipelineTransform<T1, any>,
+            T3 extends PipelineTransform<T2, any>,
+            T4 extends PipelineTransform<T3, any>,
+            B extends PipelineDestination<T4, any>
+        >(source: A, transform1: T1, transform2: T2, transform3: T3, transform4: T4, destination: B, callback?: PipelineCallback<B>): B extends NodeJS.WritableStream ? B : NodeJS.WritableStream;
+        function pipeline(
+            streams: ReadonlyArray<NodeJS.ReadableStream | NodeJS.WritableStream | NodeJS.ReadWriteStream>,
+            callback?: (err: NodeJS.ErrnoException | null) => void
+        ): NodeJS.WritableStream;
+        function pipeline(
+            stream1: NodeJS.ReadableStream,
+            stream2: NodeJS.ReadWriteStream | NodeJS.WritableStream,
+            ...streams: Array<NodeJS.ReadWriteStream | NodeJS.WritableStream | ((err: NodeJS.ErrnoException | null) => void)>
+        ): NodeJS.WritableStream;
+        namespace pipeline {
+            function __promisify__<A extends PipelineSource<any>, B extends PipelineDestination<A, any>>(source: A, destination: B, options?: PipelineOptions): PipelinePromise<B>;
+            function __promisify__<A extends PipelineSource<any>, T1 extends PipelineTransform<A, any>, B extends PipelineDestination<T1, any>>(
+                source: A,
+                transform1: T1,
+                destination: B,
+                options?: PipelineOptions
+            ): PipelinePromise<B>;
+            function __promisify__<A extends PipelineSource<any>, T1 extends PipelineTransform<A, any>, T2 extends PipelineTransform<T1, any>, B extends PipelineDestination<T2, any>>(
+                source: A,
+                transform1: T1,
+                transform2: T2,
+                destination: B,
+                options?: PipelineOptions
+            ): PipelinePromise<B>;
+            function __promisify__<
+                A extends PipelineSource<any>,
+                T1 extends PipelineTransform<A, any>,
+                T2 extends PipelineTransform<T1, any>,
+                T3 extends PipelineTransform<T2, any>,
+                B extends PipelineDestination<T3, any>
+            >(source: A, transform1: T1, transform2: T2, transform3: T3, destination: B, options?: PipelineOptions): PipelinePromise<B>;
+            function __promisify__<
+                A extends PipelineSource<any>,
+                T1 extends PipelineTransform<A, any>,
+                T2 extends PipelineTransform<T1, any>,
+                T3 extends PipelineTransform<T2, any>,
+                T4 extends PipelineTransform<T3, any>,
+                B extends PipelineDestination<T4, any>
+            >(source: A, transform1: T1, transform2: T2, transform3: T3, transform4: T4, destination: B, options?: PipelineOptions): PipelinePromise<B>;
+            function __promisify__(streams: ReadonlyArray<NodeJS.ReadableStream | NodeJS.WritableStream | NodeJS.ReadWriteStream>, options?: PipelineOptions): Promise<void>;
+            function __promisify__(
+                stream1: NodeJS.ReadableStream,
+                stream2: NodeJS.ReadWriteStream | NodeJS.WritableStream,
+                ...streams: Array<NodeJS.ReadWriteStream | NodeJS.WritableStream | PipelineOptions>
+            ): Promise<void>;
+        }
+        interface Pipe {
+            close(): void;
+            hasRef(): boolean;
+            ref(): void;
+            unref(): void;
+        }
+
+        /**
+         * Returns whether the stream has encountered an error.
+         * @since v17.3.0
+         */
+        function isErrored(stream: Readable | Writable | NodeJS.ReadableStream | NodeJS.WritableStream): boolean;
+
+        /**
+         * Returns whether the stream is readable.
+         * @since v17.4.0
+         */
+        function isReadable(stream: Readable | NodeJS.ReadableStream): boolean;
+
+        const promises: typeof streamPromises;
+        const consumers: typeof streamConsumers;
+    }
+    export = internal;
+}
+declare module 'node:stream' {
+    import stream = require('stream');
+    export = stream;
+}
diff --git a/igv_component/node_modules/@types/node/stream/consumers.d.ts b/igv_component/node_modules/@types/node/stream/consumers.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..ce6c9bb7852f27fdb23877aa6917b63f7dfe3e7b
--- /dev/null
+++ b/igv_component/node_modules/@types/node/stream/consumers.d.ts
@@ -0,0 +1,24 @@
+// Duplicates of interface in lib.dom.ts.
+// Duplicated here rather than referencing lib.dom.ts because doing so causes lib.dom.ts to be loaded for "test-all"
+// Which in turn causes tests to pass that shouldn't pass.
+//
+// This interface is not, and should not be, exported.
+interface Blob {
+    readonly size: number;
+    readonly type: string;
+    arrayBuffer(): Promise<ArrayBuffer>;
+    slice(start?: number, end?: number, contentType?: string): Blob;
+    stream(): NodeJS.ReadableStream;
+    text(): Promise<string>;
+}
+declare module 'stream/consumers' {
+    import { Readable } from 'node:stream';
+    function buffer(stream: NodeJS.ReadableStream | Readable | AsyncIterator<any>): Promise<Buffer>;
+    function text(stream: NodeJS.ReadableStream | Readable | AsyncIterator<any>): Promise<string>;
+    function arrayBuffer(stream: NodeJS.ReadableStream | Readable | AsyncIterator<any>): Promise<ArrayBuffer>;
+    function blob(stream: NodeJS.ReadableStream | Readable | AsyncIterator<any>): Promise<Blob>;
+    function json(stream: NodeJS.ReadableStream | Readable | AsyncIterator<any>): Promise<unknown>;
+}
+declare module 'node:stream/consumers' {
+    export * from 'stream/consumers';
+}
diff --git a/igv_component/node_modules/@types/node/stream/promises.d.ts b/igv_component/node_modules/@types/node/stream/promises.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b427073de50f3c33d229092dafbe0ea778c36294
--- /dev/null
+++ b/igv_component/node_modules/@types/node/stream/promises.d.ts
@@ -0,0 +1,42 @@
+declare module 'stream/promises' {
+    import { FinishedOptions, PipelineSource, PipelineTransform, PipelineDestination, PipelinePromise, PipelineOptions } from 'node:stream';
+    function finished(stream: NodeJS.ReadableStream | NodeJS.WritableStream | NodeJS.ReadWriteStream, options?: FinishedOptions): Promise<void>;
+    function pipeline<A extends PipelineSource<any>, B extends PipelineDestination<A, any>>(source: A, destination: B, options?: PipelineOptions): PipelinePromise<B>;
+    function pipeline<A extends PipelineSource<any>, T1 extends PipelineTransform<A, any>, B extends PipelineDestination<T1, any>>(
+        source: A,
+        transform1: T1,
+        destination: B,
+        options?: PipelineOptions
+    ): PipelinePromise<B>;
+    function pipeline<A extends PipelineSource<any>, T1 extends PipelineTransform<A, any>, T2 extends PipelineTransform<T1, any>, B extends PipelineDestination<T2, any>>(
+        source: A,
+        transform1: T1,
+        transform2: T2,
+        destination: B,
+        options?: PipelineOptions
+    ): PipelinePromise<B>;
+    function pipeline<
+        A extends PipelineSource<any>,
+        T1 extends PipelineTransform<A, any>,
+        T2 extends PipelineTransform<T1, any>,
+        T3 extends PipelineTransform<T2, any>,
+        B extends PipelineDestination<T3, any>
+    >(source: A, transform1: T1, transform2: T2, transform3: T3, destination: B, options?: PipelineOptions): PipelinePromise<B>;
+    function pipeline<
+        A extends PipelineSource<any>,
+        T1 extends PipelineTransform<A, any>,
+        T2 extends PipelineTransform<T1, any>,
+        T3 extends PipelineTransform<T2, any>,
+        T4 extends PipelineTransform<T3, any>,
+        B extends PipelineDestination<T4, any>
+    >(source: A, transform1: T1, transform2: T2, transform3: T3, transform4: T4, destination: B, options?: PipelineOptions): PipelinePromise<B>;
+    function pipeline(streams: ReadonlyArray<NodeJS.ReadableStream | NodeJS.WritableStream | NodeJS.ReadWriteStream>, options?: PipelineOptions): Promise<void>;
+    function pipeline(
+        stream1: NodeJS.ReadableStream,
+        stream2: NodeJS.ReadWriteStream | NodeJS.WritableStream,
+        ...streams: Array<NodeJS.ReadWriteStream | NodeJS.WritableStream | PipelineOptions>
+    ): Promise<void>;
+}
+declare module 'node:stream/promises' {
+    export * from 'stream/promises';
+}
diff --git a/igv_component/node_modules/@types/node/stream/web.d.ts b/igv_component/node_modules/@types/node/stream/web.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..f9ef0570dc3f9290195183725d8e25fd1c40c249
--- /dev/null
+++ b/igv_component/node_modules/@types/node/stream/web.d.ts
@@ -0,0 +1,330 @@
+declare module 'stream/web' {
+    // stub module, pending copy&paste from .d.ts or manual impl
+    // copy from lib.dom.d.ts
+    interface ReadableWritablePair<R = any, W = any> {
+        readable: ReadableStream<R>;
+        /**
+         * Provides a convenient, chainable way of piping this readable stream
+         * through a transform stream (or any other { writable, readable }
+         * pair). It simply pipes the stream into the writable side of the
+         * supplied pair, and returns the readable side for further use.
+         *
+         * Piping a stream will lock it for the duration of the pipe, preventing
+         * any other consumer from acquiring a reader.
+         */
+        writable: WritableStream<W>;
+    }
+    interface StreamPipeOptions {
+        preventAbort?: boolean;
+        preventCancel?: boolean;
+        /**
+         * Pipes this readable stream to a given writable stream destination.
+         * The way in which the piping process behaves under various error
+         * conditions can be customized with a number of passed options. It
+         * returns a promise that fulfills when the piping process completes
+         * successfully, or rejects if any errors were encountered.
+         *
+         * Piping a stream will lock it for the duration of the pipe, preventing
+         * any other consumer from acquiring a reader.
+         *
+         * Errors and closures of the source and destination streams propagate
+         * as follows:
+         *
+         * An error in this source readable stream will abort destination,
+         * unless preventAbort is truthy. The returned promise will be rejected
+         * with the source's error, or with any error that occurs during
+         * aborting the destination.
+         *
+         * An error in destination will cancel this source readable stream,
+         * unless preventCancel is truthy. The returned promise will be rejected
+         * with the destination's error, or with any error that occurs during
+         * canceling the source.
+         *
+         * When this source readable stream closes, destination will be closed,
+         * unless preventClose is truthy. The returned promise will be fulfilled
+         * once this process completes, unless an error is encountered while
+         * closing the destination, in which case it will be rejected with that
+         * error.
+         *
+         * If destination starts out closed or closing, this source readable
+         * stream will be canceled, unless preventCancel is true. The returned
+         * promise will be rejected with an error indicating piping to a closed
+         * stream failed, or with any error that occurs during canceling the
+         * source.
+         *
+         * The signal option can be set to an AbortSignal to allow aborting an
+         * ongoing pipe operation via the corresponding AbortController. In this
+         * case, this source readable stream will be canceled, and destination
+         * aborted, unless the respective options preventCancel or preventAbort
+         * are set.
+         */
+        preventClose?: boolean;
+        signal?: AbortSignal;
+    }
+    interface ReadableStreamGenericReader {
+        readonly closed: Promise<undefined>;
+        cancel(reason?: any): Promise<void>;
+    }
+    interface ReadableStreamDefaultReadValueResult<T> {
+        done: false;
+        value: T;
+    }
+    interface ReadableStreamDefaultReadDoneResult {
+        done: true;
+        value?: undefined;
+    }
+    type ReadableStreamController<T> = ReadableStreamDefaultController<T>;
+    type ReadableStreamDefaultReadResult<T> = ReadableStreamDefaultReadValueResult<T> | ReadableStreamDefaultReadDoneResult;
+    interface ReadableByteStreamControllerCallback {
+        (controller: ReadableByteStreamController): void | PromiseLike<void>;
+    }
+    interface UnderlyingSinkAbortCallback {
+        (reason?: any): void | PromiseLike<void>;
+    }
+    interface UnderlyingSinkCloseCallback {
+        (): void | PromiseLike<void>;
+    }
+    interface UnderlyingSinkStartCallback {
+        (controller: WritableStreamDefaultController): any;
+    }
+    interface UnderlyingSinkWriteCallback<W> {
+        (chunk: W, controller: WritableStreamDefaultController): void | PromiseLike<void>;
+    }
+    interface UnderlyingSourceCancelCallback {
+        (reason?: any): void | PromiseLike<void>;
+    }
+    interface UnderlyingSourcePullCallback<R> {
+        (controller: ReadableStreamController<R>): void | PromiseLike<void>;
+    }
+    interface UnderlyingSourceStartCallback<R> {
+        (controller: ReadableStreamController<R>): any;
+    }
+    interface TransformerFlushCallback<O> {
+        (controller: TransformStreamDefaultController<O>): void | PromiseLike<void>;
+    }
+    interface TransformerStartCallback<O> {
+        (controller: TransformStreamDefaultController<O>): any;
+    }
+    interface TransformerTransformCallback<I, O> {
+        (chunk: I, controller: TransformStreamDefaultController<O>): void | PromiseLike<void>;
+    }
+    interface UnderlyingByteSource {
+        autoAllocateChunkSize?: number;
+        cancel?: ReadableStreamErrorCallback;
+        pull?: ReadableByteStreamControllerCallback;
+        start?: ReadableByteStreamControllerCallback;
+        type: 'bytes';
+    }
+    interface UnderlyingSource<R = any> {
+        cancel?: UnderlyingSourceCancelCallback;
+        pull?: UnderlyingSourcePullCallback<R>;
+        start?: UnderlyingSourceStartCallback<R>;
+        type?: undefined;
+    }
+    interface UnderlyingSink<W = any> {
+        abort?: UnderlyingSinkAbortCallback;
+        close?: UnderlyingSinkCloseCallback;
+        start?: UnderlyingSinkStartCallback;
+        type?: undefined;
+        write?: UnderlyingSinkWriteCallback<W>;
+    }
+    interface ReadableStreamErrorCallback {
+        (reason: any): void | PromiseLike<void>;
+    }
+    /** This Streams API interface represents a readable stream of byte data. */
+    interface ReadableStream<R = any> {
+        readonly locked: boolean;
+        cancel(reason?: any): Promise<void>;
+        getReader(): ReadableStreamDefaultReader<R>;
+        pipeThrough<T>(transform: ReadableWritablePair<T, R>, options?: StreamPipeOptions): ReadableStream<T>;
+        pipeTo(destination: WritableStream<R>, options?: StreamPipeOptions): Promise<void>;
+        tee(): [ReadableStream<R>, ReadableStream<R>];
+        values(options?: { preventCancel?: boolean }): AsyncIterableIterator<R>;
+        [Symbol.asyncIterator](): AsyncIterableIterator<R>;
+    }
+    const ReadableStream: {
+        prototype: ReadableStream;
+        new (underlyingSource: UnderlyingByteSource, strategy?: QueuingStrategy<Uint8Array>): ReadableStream<Uint8Array>;
+        new <R = any>(underlyingSource?: UnderlyingSource<R>, strategy?: QueuingStrategy<R>): ReadableStream<R>;
+    };
+    interface ReadableStreamDefaultReader<R = any> extends ReadableStreamGenericReader {
+        read(): Promise<ReadableStreamDefaultReadResult<R>>;
+        releaseLock(): void;
+    }
+    const ReadableStreamDefaultReader: {
+        prototype: ReadableStreamDefaultReader;
+        new <R = any>(stream: ReadableStream<R>): ReadableStreamDefaultReader<R>;
+    };
+    const ReadableStreamBYOBReader: any;
+    const ReadableStreamBYOBRequest: any;
+    interface ReadableByteStreamController {
+        readonly byobRequest: undefined;
+        readonly desiredSize: number | null;
+        close(): void;
+        enqueue(chunk: ArrayBufferView): void;
+        error(error?: any): void;
+    }
+    const ReadableByteStreamController: {
+        prototype: ReadableByteStreamController;
+        new (): ReadableByteStreamController;
+    };
+    interface ReadableStreamDefaultController<R = any> {
+        readonly desiredSize: number | null;
+        close(): void;
+        enqueue(chunk?: R): void;
+        error(e?: any): void;
+    }
+    const ReadableStreamDefaultController: {
+        prototype: ReadableStreamDefaultController;
+        new (): ReadableStreamDefaultController;
+    };
+    interface Transformer<I = any, O = any> {
+        flush?: TransformerFlushCallback<O>;
+        readableType?: undefined;
+        start?: TransformerStartCallback<O>;
+        transform?: TransformerTransformCallback<I, O>;
+        writableType?: undefined;
+    }
+    interface TransformStream<I = any, O = any> {
+        readonly readable: ReadableStream<O>;
+        readonly writable: WritableStream<I>;
+    }
+    const TransformStream: {
+        prototype: TransformStream;
+        new <I = any, O = any>(transformer?: Transformer<I, O>, writableStrategy?: QueuingStrategy<I>, readableStrategy?: QueuingStrategy<O>): TransformStream<I, O>;
+    };
+    interface TransformStreamDefaultController<O = any> {
+        readonly desiredSize: number | null;
+        enqueue(chunk?: O): void;
+        error(reason?: any): void;
+        terminate(): void;
+    }
+    const TransformStreamDefaultController: {
+        prototype: TransformStreamDefaultController;
+        new (): TransformStreamDefaultController;
+    };
+    /**
+     * This Streams API interface provides a standard abstraction for writing
+     * streaming data to a destination, known as a sink. This object comes with
+     * built-in back pressure and queuing.
+     */
+    interface WritableStream<W = any> {
+        readonly locked: boolean;
+        abort(reason?: any): Promise<void>;
+        close(): Promise<void>;
+        getWriter(): WritableStreamDefaultWriter<W>;
+    }
+    const WritableStream: {
+        prototype: WritableStream;
+        new <W = any>(underlyingSink?: UnderlyingSink<W>, strategy?: QueuingStrategy<W>): WritableStream<W>;
+    };
+    /**
+     * This Streams API interface is the object returned by
+     * WritableStream.getWriter() and once created locks the < writer to the
+     * WritableStream ensuring that no other streams can write to the underlying
+     * sink.
+     */
+    interface WritableStreamDefaultWriter<W = any> {
+        readonly closed: Promise<undefined>;
+        readonly desiredSize: number | null;
+        readonly ready: Promise<undefined>;
+        abort(reason?: any): Promise<void>;
+        close(): Promise<void>;
+        releaseLock(): void;
+        write(chunk?: W): Promise<void>;
+    }
+    const WritableStreamDefaultWriter: {
+        prototype: WritableStreamDefaultWriter;
+        new <W = any>(stream: WritableStream<W>): WritableStreamDefaultWriter<W>;
+    };
+    /**
+     * This Streams API interface represents a controller allowing control of a
+     * WritableStream's state. When constructing a WritableStream, the
+     * underlying sink is given a corresponding WritableStreamDefaultController
+     * instance to manipulate.
+     */
+    interface WritableStreamDefaultController {
+        error(e?: any): void;
+    }
+    const WritableStreamDefaultController: {
+        prototype: WritableStreamDefaultController;
+        new (): WritableStreamDefaultController;
+    };
+    interface QueuingStrategy<T = any> {
+        highWaterMark?: number;
+        size?: QueuingStrategySize<T>;
+    }
+    interface QueuingStrategySize<T = any> {
+        (chunk?: T): number;
+    }
+    interface QueuingStrategyInit {
+        /**
+         * Creates a new ByteLengthQueuingStrategy with the provided high water
+         * mark.
+         *
+         * Note that the provided high water mark will not be validated ahead of
+         * time. Instead, if it is negative, NaN, or not a number, the resulting
+         * ByteLengthQueuingStrategy will cause the corresponding stream
+         * constructor to throw.
+         */
+        highWaterMark: number;
+    }
+    /**
+     * This Streams API interface provides a built-in byte length queuing
+     * strategy that can be used when constructing streams.
+     */
+    interface ByteLengthQueuingStrategy extends QueuingStrategy<ArrayBufferView> {
+        readonly highWaterMark: number;
+        readonly size: QueuingStrategySize<ArrayBufferView>;
+    }
+    const ByteLengthQueuingStrategy: {
+        prototype: ByteLengthQueuingStrategy;
+        new (init: QueuingStrategyInit): ByteLengthQueuingStrategy;
+    };
+    /**
+     * This Streams API interface provides a built-in byte length queuing
+     * strategy that can be used when constructing streams.
+     */
+    interface CountQueuingStrategy extends QueuingStrategy {
+        readonly highWaterMark: number;
+        readonly size: QueuingStrategySize;
+    }
+    const CountQueuingStrategy: {
+        prototype: CountQueuingStrategy;
+        new (init: QueuingStrategyInit): CountQueuingStrategy;
+    };
+    interface TextEncoderStream {
+        /** Returns "utf-8". */
+        readonly encoding: 'utf-8';
+        readonly readable: ReadableStream<Uint8Array>;
+        readonly writable: WritableStream<string>;
+        readonly [Symbol.toStringTag]: string;
+    }
+    const TextEncoderStream: {
+        prototype: TextEncoderStream;
+        new (): TextEncoderStream;
+    };
+    interface TextDecoderOptions {
+        fatal?: boolean;
+        ignoreBOM?: boolean;
+    }
+    type BufferSource = ArrayBufferView | ArrayBuffer;
+    interface TextDecoderStream {
+        /** Returns encoding's name, lower cased. */
+        readonly encoding: string;
+        /** Returns `true` if error mode is "fatal", and `false` otherwise. */
+        readonly fatal: boolean;
+        /** Returns `true` if ignore BOM flag is set, and `false` otherwise. */
+        readonly ignoreBOM: boolean;
+        readonly readable: ReadableStream<string>;
+        readonly writable: WritableStream<BufferSource>;
+        readonly [Symbol.toStringTag]: string;
+    }
+    const TextDecoderStream: {
+        prototype: TextDecoderStream;
+        new (label?: string, options?: TextDecoderOptions): TextDecoderStream;
+    };
+}
+declare module 'node:stream/web' {
+    export * from 'stream/web';
+}
diff --git a/igv_component/node_modules/@types/node/string_decoder.d.ts b/igv_component/node_modules/@types/node/string_decoder.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a5858041116333dfaa018a9e5cf89e3a9fc78d71
--- /dev/null
+++ b/igv_component/node_modules/@types/node/string_decoder.d.ts
@@ -0,0 +1,67 @@
+/**
+ * The `string_decoder` module provides an API for decoding `Buffer` objects into
+ * strings in a manner that preserves encoded multi-byte UTF-8 and UTF-16
+ * characters. It can be accessed using:
+ *
+ * ```js
+ * const { StringDecoder } = require('string_decoder');
+ * ```
+ *
+ * The following example shows the basic use of the `StringDecoder` class.
+ *
+ * ```js
+ * const { StringDecoder } = require('string_decoder');
+ * const decoder = new StringDecoder('utf8');
+ *
+ * const cent = Buffer.from([0xC2, 0xA2]);
+ * console.log(decoder.write(cent));
+ *
+ * const euro = Buffer.from([0xE2, 0x82, 0xAC]);
+ * console.log(decoder.write(euro));
+ * ```
+ *
+ * When a `Buffer` instance is written to the `StringDecoder` instance, an
+ * internal buffer is used to ensure that the decoded string does not contain
+ * any incomplete multibyte characters. These are held in the buffer until the
+ * next call to `stringDecoder.write()` or until `stringDecoder.end()` is called.
+ *
+ * In the following example, the three UTF-8 encoded bytes of the European Euro
+ * symbol (`€`) are written over three separate operations:
+ *
+ * ```js
+ * const { StringDecoder } = require('string_decoder');
+ * const decoder = new StringDecoder('utf8');
+ *
+ * decoder.write(Buffer.from([0xE2]));
+ * decoder.write(Buffer.from([0x82]));
+ * console.log(decoder.end(Buffer.from([0xAC])));
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/string_decoder.js)
+ */
+declare module 'string_decoder' {
+    class StringDecoder {
+        constructor(encoding?: BufferEncoding);
+        /**
+         * Returns a decoded string, ensuring that any incomplete multibyte characters at
+         * the end of the `Buffer`, or `TypedArray`, or `DataView` are omitted from the
+         * returned string and stored in an internal buffer for the next call to`stringDecoder.write()` or `stringDecoder.end()`.
+         * @since v0.1.99
+         * @param buffer A `Buffer`, or `TypedArray`, or `DataView` containing the bytes to decode.
+         */
+        write(buffer: Buffer): string;
+        /**
+         * Returns any remaining input stored in the internal buffer as a string. Bytes
+         * representing incomplete UTF-8 and UTF-16 characters will be replaced with
+         * substitution characters appropriate for the character encoding.
+         *
+         * If the `buffer` argument is provided, one final call to `stringDecoder.write()`is performed before returning the remaining input.
+         * After `end()` is called, the `stringDecoder` object can be reused for new input.
+         * @since v0.9.3
+         * @param buffer A `Buffer`, or `TypedArray`, or `DataView` containing the bytes to decode.
+         */
+        end(buffer?: Buffer): string;
+    }
+}
+declare module 'node:string_decoder' {
+    export * from 'string_decoder';
+}
diff --git a/igv_component/node_modules/@types/node/test.d.ts b/igv_component/node_modules/@types/node/test.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a9b4eeb5eb0f5564ee25b86699ad4b686ac0fe47
--- /dev/null
+++ b/igv_component/node_modules/@types/node/test.d.ts
@@ -0,0 +1,314 @@
+/**
+ * The `node:test` module provides a standalone testing module.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/test.js)
+ */
+declare module 'node:test' {
+    /**
+     * Programmatically start the test runner.
+     * @since v18.9.0
+     * @param options Configuration options for running tests.
+     * @returns A {@link TapStream} that emits events about the test execution.
+     */
+    function run(options?: RunOptions): TapStream;
+
+    /**
+     * The `test()` function is the value imported from the test module. Each invocation of this
+     * function results in the creation of a test point in the TAP output.
+     *
+     * The {@link TestContext} object passed to the fn argument can be used to perform actions
+     * related to the current test. Examples include skipping the test, adding additional TAP
+     * diagnostic information, or creating subtests.
+     *
+     * `test()` returns a {@link Promise} that resolves once the test completes. The return value
+     * can usually be discarded for top level tests. However, the return value from subtests should
+     * be used to prevent the parent test from finishing first and cancelling the subtest as shown
+     * in the following example.
+     *
+     * ```js
+     * test('top level test', async (t) => {
+     *   // The setTimeout() in the following subtest would cause it to outlive its
+     *   // parent test if 'await' is removed on the next line. Once the parent test
+     *   // completes, it will cancel any outstanding subtests.
+     *   await t.test('longer running subtest', async (t) => {
+     *     return new Promise((resolve, reject) => {
+     *       setTimeout(resolve, 1000);
+     *     });
+     *   });
+     * });
+     * ```
+     * @since v18.0.0
+     * @param name The name of the test, which is displayed when reporting test results.
+     *    Default: The `name` property of fn, or `'<anonymous>'` if `fn` does not have a name.
+     * @param options Configuration options for the test
+     * @param fn The function under test. The first argument to this function is a
+     *    {@link TestContext} object. If the test uses callbacks, the callback function is
+     *    passed as the second argument. Default: A no-op function.
+     * @returns A {@link Promise} resolved with `undefined` once the test completes.
+     */
+    function test(name?: string, fn?: TestFn): Promise<void>;
+    function test(name?: string, options?: TestOptions, fn?: TestFn): Promise<void>;
+    function test(options?: TestOptions, fn?: TestFn): Promise<void>;
+    function test(fn?: TestFn): Promise<void>;
+
+    /**
+     * @since v18.6.0
+     * @param name The name of the suite, which is displayed when reporting suite results.
+     *    Default: The `name` property of fn, or `'<anonymous>'` if `fn` does not have a name.
+     * @param options Configuration options for the suite
+     * @param fn The function under suite. Default: A no-op function.
+     */
+    function describe(name?: string, options?: TestOptions, fn?: SuiteFn): void;
+    function describe(name?: string, fn?: SuiteFn): void;
+    function describe(options?: TestOptions, fn?: SuiteFn): void;
+    function describe(fn?: SuiteFn): void;
+
+    /**
+     * @since v18.6.0
+     * @param name The name of the test, which is displayed when reporting test results.
+     *    Default: The `name` property of fn, or `'<anonymous>'` if `fn` does not have a name.
+     * @param options Configuration options for the test
+     * @param fn The function under test. If the test uses callbacks, the callback function is
+     *    passed as the second argument. Default: A no-op function.
+     */
+    function it(name?: string, options?: TestOptions, fn?: ItFn): void;
+    function it(name?: string, fn?: ItFn): void;
+    function it(options?: TestOptions, fn?: ItFn): void;
+    function it(fn?: ItFn): void;
+
+    /**
+     * The type of a function under test. The first argument to this function is a
+     * {@link TestContext} object. If the test uses callbacks, the callback function is passed as
+     * the second argument.
+     */
+    type TestFn = (t: TestContext, done: (result?: any) => void) => any;
+
+    /**
+     * The type of a function under Suite.
+     * If the test uses callbacks, the callback function is passed as an argument
+     */
+    type SuiteFn = (done: (result?: any) => void) => void;
+
+    /**
+     * The type of a function under test.
+     * If the test uses callbacks, the callback function is passed as an argument
+     */
+    type ItFn = (done: (result?: any) => void) => any;
+
+    interface RunOptions {
+        /**
+         * @default false
+         */
+        concurrency?: number | boolean;
+
+        /**
+         * An array containing the list of files to run. If unspecified, the test runner execution model will be used.
+         */
+        files?: readonly string[];
+
+        /**
+         * Allows aborting an in-progress test.
+         * @default undefined
+         */
+        signal?: AbortSignal;
+
+        /**
+         * A number of milliseconds the test will fail after. If unspecified, subtests inherit this
+         * value from their parent.
+         * @default Infinity
+         */
+        timeout?: number;
+    }
+
+    /**
+     * A successful call of the run() method will return a new TapStream object, streaming a TAP output.
+     * TapStream will emit events in the order of the tests' definitions.
+     * @since v18.9.0
+     */
+    interface TapStream extends NodeJS.ReadableStream {
+        addListener(event: 'test:diagnostic', listener: (message: string) => void): this;
+        addListener(event: 'test:fail', listener: (data: TestFail) => void): this;
+        addListener(event: 'test:pass', listener: (data: TestPass) => void): this;
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        emit(event: 'test:diagnostic', message: string): boolean;
+        emit(event: 'test:fail', data: TestFail): boolean;
+        emit(event: 'test:pass', data: TestPass): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'test:diagnostic', listener: (message: string) => void): this;
+        on(event: 'test:fail', listener: (data: TestFail) => void): this;
+        on(event: 'test:pass', listener: (data: TestPass) => void): this;
+        on(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'test:diagnostic', listener: (message: string) => void): this;
+        once(event: 'test:fail', listener: (data: TestFail) => void): this;
+        once(event: 'test:pass', listener: (data: TestPass) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'test:diagnostic', listener: (message: string) => void): this;
+        prependListener(event: 'test:fail', listener: (data: TestFail) => void): this;
+        prependListener(event: 'test:pass', listener: (data: TestPass) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'test:diagnostic', listener: (message: string) => void): this;
+        prependOnceListener(event: 'test:fail', listener: (data: TestFail) => void): this;
+        prependOnceListener(event: 'test:pass', listener: (data: TestPass) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+    }
+
+    interface TestFail {
+        /**
+         * The test duration.
+         */
+        duration: number;
+
+        /**
+         * The failure casing test to fail.
+         */
+        error: Error;
+
+        /**
+         * The test name.
+         */
+        name: string;
+
+        /**
+         * The ordinal number of the test.
+         */
+        testNumber: number;
+
+        /**
+         * Present if `context.todo` is called.
+         */
+        todo?: string;
+
+        /**
+         * Present if `context.skip` is called.
+         */
+        skip?: string;
+    }
+
+    interface TestPass {
+        /**
+         * The test duration.
+         */
+        duration: number;
+
+        /**
+         * The test name.
+         */
+        name: string;
+
+        /**
+         * The ordinal number of the test.
+         */
+        testNumber: number;
+
+        /**
+         * Present if `context.todo` is called.
+         */
+        todo?: string;
+
+        /**
+         * Present if `context.skip` is called.
+         */
+        skip?: string;
+    }
+
+    /**
+     * An instance of `TestContext` is passed to each test function in order to interact with the
+     * test runner. However, the `TestContext` constructor is not exposed as part of the API.
+     * @since v18.0.0
+     */
+    interface TestContext {
+        /**
+         * This function is used to write TAP diagnostics to the output. Any diagnostic information is
+         * included at the end of the test's results. This function does not return a value.
+         * @param message Message to be displayed as a TAP diagnostic.
+         * @since v18.0.0
+         */
+        diagnostic(message: string): void;
+
+        /**
+         * If `shouldRunOnlyTests` is truthy, the test context will only run tests that have the `only`
+         * option set. Otherwise, all tests are run. If Node.js was not started with the `--test-only`
+         * command-line option, this function is a no-op.
+         * @param shouldRunOnlyTests Whether or not to run `only` tests.
+         * @since v18.0.0
+         */
+        runOnly(shouldRunOnlyTests: boolean): void;
+
+        /**
+         * This function causes the test's output to indicate the test as skipped. If `message` is
+         * provided, it is included in the TAP output. Calling `skip()` does not terminate execution of
+         * the test function. This function does not return a value.
+         * @param message Optional skip message to be displayed in TAP output.
+         * @since v18.0.0
+         */
+        skip(message?: string): void;
+
+        /**
+         * This function adds a `TODO` directive to the test's output. If `message` is provided, it is
+         * included in the TAP output. Calling `todo()` does not terminate execution of the test
+         * function. This function does not return a value.
+         * @param message Optional `TODO` message to be displayed in TAP output.
+         * @since v18.0.0
+         */
+        todo(message?: string): void;
+
+        /**
+         * This function is used to create subtests under the current test. This function behaves in
+         * the same fashion as the top level {@link test} function.
+         * @since v18.0.0
+         * @param name The name of the test, which is displayed when reporting test results.
+         *    Default: The `name` property of fn, or `'<anonymous>'` if `fn` does not have a name.
+         * @param options Configuration options for the test
+         * @param fn The function under test. This first argument to this function is a
+         *    {@link TestContext} object. If the test uses callbacks, the callback function is
+         *    passed as the second argument. Default: A no-op function.
+         * @returns A {@link Promise} resolved with `undefined` once the test completes.
+         */
+        test: typeof test;
+    }
+
+    interface TestOptions {
+        /**
+         * The number of tests that can be run at the same time. If unspecified, subtests inherit this
+         * value from their parent.
+         * @default 1
+         */
+        concurrency?: number;
+
+        /**
+         * If truthy, and the test context is configured to run `only` tests, then this test will be
+         * run. Otherwise, the test is skipped.
+         * @default false
+         */
+        only?: boolean;
+
+        /**
+         * Allows aborting an in-progress test.
+         * @since v18.8.0
+         */
+        signal?: AbortSignal;
+
+        /**
+         * If truthy, the test is skipped. If a string is provided, that string is displayed in the
+         * test results as the reason for skipping the test.
+         * @default false
+         */
+        skip?: boolean | string;
+
+        /**
+         * A number of milliseconds the test will fail after. If unspecified, subtests inherit this
+         * value from their parent.
+         * @default Infinity
+         * @since v18.7.0
+         */
+        timeout?: number;
+
+        /**
+         * If truthy, the test marked as `TODO`. If a string is provided, that string is displayed in
+         * the test results as the reason why the test is `TODO`.
+         * @default false
+         */
+        todo?: boolean | string;
+    }
+
+    export { test as default, run, test, describe, it };
+}
diff --git a/igv_component/node_modules/@types/node/timers.d.ts b/igv_component/node_modules/@types/node/timers.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b26f3cedabff61dd1580a56540f3b911eb9ecfe6
--- /dev/null
+++ b/igv_component/node_modules/@types/node/timers.d.ts
@@ -0,0 +1,94 @@
+/**
+ * The `timer` module exposes a global API for scheduling functions to
+ * be called at some future period of time. Because the timer functions are
+ * globals, there is no need to call `require('timers')` to use the API.
+ *
+ * The timer functions within Node.js implement a similar API as the timers API
+ * provided by Web Browsers but use a different internal implementation that is
+ * built around the Node.js [Event Loop](https://nodejs.org/en/docs/guides/event-loop-timers-and-nexttick/#setimmediate-vs-settimeout).
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/timers.js)
+ */
+declare module 'timers' {
+    import { Abortable } from 'node:events';
+    import { setTimeout as setTimeoutPromise, setImmediate as setImmediatePromise, setInterval as setIntervalPromise } from 'node:timers/promises';
+    interface TimerOptions extends Abortable {
+        /**
+         * Set to `false` to indicate that the scheduled `Timeout`
+         * should not require the Node.js event loop to remain active.
+         * @default true
+         */
+        ref?: boolean | undefined;
+    }
+    let setTimeout: typeof global.setTimeout;
+    let clearTimeout: typeof global.clearTimeout;
+    let setInterval: typeof global.setInterval;
+    let clearInterval: typeof global.clearInterval;
+    let setImmediate: typeof global.setImmediate;
+    let clearImmediate: typeof global.clearImmediate;
+    global {
+        namespace NodeJS {
+            // compatibility with older typings
+            interface Timer extends RefCounted {
+                hasRef(): boolean;
+                refresh(): this;
+                [Symbol.toPrimitive](): number;
+            }
+            interface Immediate extends RefCounted {
+                /**
+                 * If true, the `Immediate` object will keep the Node.js event loop active.
+                 * @since v11.0.0
+                 */
+                hasRef(): boolean;
+                _onImmediate: Function; // to distinguish it from the Timeout class
+            }
+            interface Timeout extends Timer {
+                /**
+                 * If true, the `Timeout` object will keep the Node.js event loop active.
+                 * @since v11.0.0
+                 */
+                hasRef(): boolean;
+                /**
+                 * Sets the timer's start time to the current time, and reschedules the timer to
+                 * call its callback at the previously specified duration adjusted to the current
+                 * time. This is useful for refreshing a timer without allocating a new
+                 * JavaScript object.
+                 *
+                 * Using this on a timer that has already called its callback will reactivate the
+                 * timer.
+                 * @since v10.2.0
+                 * @return a reference to `timeout`
+                 */
+                refresh(): this;
+                [Symbol.toPrimitive](): number;
+            }
+        }
+        function setTimeout<TArgs extends any[]>(callback: (...args: TArgs) => void, ms?: number, ...args: TArgs): NodeJS.Timeout;
+        // util.promisify no rest args compability
+        // tslint:disable-next-line void-return
+        function setTimeout(callback: (args: void) => void, ms?: number): NodeJS.Timeout;
+        namespace setTimeout {
+            const __promisify__: typeof setTimeoutPromise;
+        }
+        function clearTimeout(timeoutId: NodeJS.Timeout | string | number | undefined): void;
+        function setInterval<TArgs extends any[]>(callback: (...args: TArgs) => void, ms?: number, ...args: TArgs): NodeJS.Timer;
+        // util.promisify no rest args compability
+        // tslint:disable-next-line void-return
+        function setInterval(callback: (args: void) => void, ms?: number): NodeJS.Timer;
+        namespace setInterval {
+            const __promisify__: typeof setIntervalPromise;
+        }
+        function clearInterval(intervalId: NodeJS.Timeout | string | number | undefined): void;
+        function setImmediate<TArgs extends any[]>(callback: (...args: TArgs) => void, ...args: TArgs): NodeJS.Immediate;
+        // util.promisify no rest args compability
+        // tslint:disable-next-line void-return
+        function setImmediate(callback: (args: void) => void): NodeJS.Immediate;
+        namespace setImmediate {
+            const __promisify__: typeof setImmediatePromise;
+        }
+        function clearImmediate(immediateId: NodeJS.Immediate | undefined): void;
+        function queueMicrotask(callback: () => void): void;
+    }
+}
+declare module 'node:timers' {
+    export * from 'timers';
+}
diff --git a/igv_component/node_modules/@types/node/timers/promises.d.ts b/igv_component/node_modules/@types/node/timers/promises.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..fd778880ef386f4e275ab1e077093fc4c7412c55
--- /dev/null
+++ b/igv_component/node_modules/@types/node/timers/promises.d.ts
@@ -0,0 +1,68 @@
+/**
+ * The `timers/promises` API provides an alternative set of timer functions
+ * that return `Promise` objects. The API is accessible via`require('timers/promises')`.
+ *
+ * ```js
+ * import {
+ *   setTimeout,
+ *   setImmediate,
+ *   setInterval,
+ * } from 'timers/promises';
+ * ```
+ * @since v15.0.0
+ */
+declare module 'timers/promises' {
+    import { TimerOptions } from 'node:timers';
+    /**
+     * ```js
+     * import {
+     *   setTimeout,
+     * } from 'timers/promises';
+     *
+     * const res = await setTimeout(100, 'result');
+     *
+     * console.log(res);  // Prints 'result'
+     * ```
+     * @since v15.0.0
+     * @param [delay=1] The number of milliseconds to wait before fulfilling the promise.
+     * @param value A value with which the promise is fulfilled.
+     */
+    function setTimeout<T = void>(delay?: number, value?: T, options?: TimerOptions): Promise<T>;
+    /**
+     * ```js
+     * import {
+     *   setImmediate,
+     * } from 'timers/promises';
+     *
+     * const res = await setImmediate('result');
+     *
+     * console.log(res);  // Prints 'result'
+     * ```
+     * @since v15.0.0
+     * @param value A value with which the promise is fulfilled.
+     */
+    function setImmediate<T = void>(value?: T, options?: TimerOptions): Promise<T>;
+    /**
+     * Returns an async iterator that generates values in an interval of `delay` ms.
+     *
+     * ```js
+     * import {
+     *   setInterval,
+     * } from 'timers/promises';
+     *
+     * const interval = 100;
+     * for await (const startTime of setInterval(interval, Date.now())) {
+     *   const now = Date.now();
+     *   console.log(now);
+     *   if ((now - startTime) > 1000)
+     *     break;
+     * }
+     * console.log(Date.now());
+     * ```
+     * @since v15.9.0
+     */
+    function setInterval<T = void>(delay?: number, value?: T, options?: TimerOptions): AsyncIterable<T>;
+}
+declare module 'node:timers/promises' {
+    export * from 'timers/promises';
+}
diff --git a/igv_component/node_modules/@types/node/tls.d.ts b/igv_component/node_modules/@types/node/tls.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2cbc71658039eced278db4632dd67d7a754b51b6
--- /dev/null
+++ b/igv_component/node_modules/@types/node/tls.d.ts
@@ -0,0 +1,1028 @@
+/**
+ * The `tls` module provides an implementation of the Transport Layer Security
+ * (TLS) and Secure Socket Layer (SSL) protocols that is built on top of OpenSSL.
+ * The module can be accessed using:
+ *
+ * ```js
+ * const tls = require('tls');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/tls.js)
+ */
+declare module 'tls' {
+    import { X509Certificate } from 'node:crypto';
+    import * as net from 'node:net';
+    import * as stream from 'stream';
+    const CLIENT_RENEG_LIMIT: number;
+    const CLIENT_RENEG_WINDOW: number;
+    interface Certificate {
+        /**
+         * Country code.
+         */
+        C: string;
+        /**
+         * Street.
+         */
+        ST: string;
+        /**
+         * Locality.
+         */
+        L: string;
+        /**
+         * Organization.
+         */
+        O: string;
+        /**
+         * Organizational unit.
+         */
+        OU: string;
+        /**
+         * Common name.
+         */
+        CN: string;
+    }
+    interface PeerCertificate {
+        subject: Certificate;
+        issuer: Certificate;
+        subjectaltname: string;
+        infoAccess: NodeJS.Dict<string[]>;
+        modulus: string;
+        exponent: string;
+        valid_from: string;
+        valid_to: string;
+        fingerprint: string;
+        fingerprint256: string;
+        ext_key_usage: string[];
+        serialNumber: string;
+        raw: Buffer;
+    }
+    interface DetailedPeerCertificate extends PeerCertificate {
+        issuerCertificate: DetailedPeerCertificate;
+    }
+    interface CipherNameAndProtocol {
+        /**
+         * The cipher name.
+         */
+        name: string;
+        /**
+         * SSL/TLS protocol version.
+         */
+        version: string;
+        /**
+         * IETF name for the cipher suite.
+         */
+        standardName: string;
+    }
+    interface EphemeralKeyInfo {
+        /**
+         * The supported types are 'DH' and 'ECDH'.
+         */
+        type: string;
+        /**
+         * The name property is available only when type is 'ECDH'.
+         */
+        name?: string | undefined;
+        /**
+         * The size of parameter of an ephemeral key exchange.
+         */
+        size: number;
+    }
+    interface KeyObject {
+        /**
+         * Private keys in PEM format.
+         */
+        pem: string | Buffer;
+        /**
+         * Optional passphrase.
+         */
+        passphrase?: string | undefined;
+    }
+    interface PxfObject {
+        /**
+         * PFX or PKCS12 encoded private key and certificate chain.
+         */
+        buf: string | Buffer;
+        /**
+         * Optional passphrase.
+         */
+        passphrase?: string | undefined;
+    }
+    interface TLSSocketOptions extends SecureContextOptions, CommonConnectionOptions {
+        /**
+         * If true the TLS socket will be instantiated in server-mode.
+         * Defaults to false.
+         */
+        isServer?: boolean | undefined;
+        /**
+         * An optional net.Server instance.
+         */
+        server?: net.Server | undefined;
+        /**
+         * An optional Buffer instance containing a TLS session.
+         */
+        session?: Buffer | undefined;
+        /**
+         * If true, specifies that the OCSP status request extension will be
+         * added to the client hello and an 'OCSPResponse' event will be
+         * emitted on the socket before establishing a secure communication
+         */
+        requestOCSP?: boolean | undefined;
+    }
+    /**
+     * Performs transparent encryption of written data and all required TLS
+     * negotiation.
+     *
+     * Instances of `tls.TLSSocket` implement the duplex `Stream` interface.
+     *
+     * Methods that return TLS connection metadata (e.g.{@link TLSSocket.getPeerCertificate} will only return data while the
+     * connection is open.
+     * @since v0.11.4
+     */
+    class TLSSocket extends net.Socket {
+        /**
+         * Construct a new tls.TLSSocket object from an existing TCP socket.
+         */
+        constructor(socket: net.Socket, options?: TLSSocketOptions);
+        /**
+         * This property is `true` if the peer certificate was signed by one of the CAs
+         * specified when creating the `tls.TLSSocket` instance, otherwise `false`.
+         * @since v0.11.4
+         */
+        authorized: boolean;
+        /**
+         * Returns the reason why the peer's certificate was not been verified. This
+         * property is set only when `tlsSocket.authorized === false`.
+         * @since v0.11.4
+         */
+        authorizationError: Error;
+        /**
+         * Always returns `true`. This may be used to distinguish TLS sockets from regular`net.Socket` instances.
+         * @since v0.11.4
+         */
+        encrypted: true;
+        /**
+         * String containing the selected ALPN protocol.
+         * Before a handshake has completed, this value is always null.
+         * When a handshake is completed but not ALPN protocol was selected, tlsSocket.alpnProtocol equals false.
+         */
+        alpnProtocol: string | false | null;
+        /**
+         * Returns an object representing the local certificate. The returned object has
+         * some properties corresponding to the fields of the certificate.
+         *
+         * See {@link TLSSocket.getPeerCertificate} for an example of the certificate
+         * structure.
+         *
+         * If there is no local certificate, an empty object will be returned. If the
+         * socket has been destroyed, `null` will be returned.
+         * @since v11.2.0
+         */
+        getCertificate(): PeerCertificate | object | null;
+        /**
+         * Returns an object containing information on the negotiated cipher suite.
+         *
+         * For example:
+         *
+         * ```json
+         * {
+         *     "name": "AES128-SHA256",
+         *     "standardName": "TLS_RSA_WITH_AES_128_CBC_SHA256",
+         *     "version": "TLSv1.2"
+         * }
+         * ```
+         *
+         * See [SSL\_CIPHER\_get\_name](https://www.openssl.org/docs/man1.1.1/man3/SSL_CIPHER_get_name.html) for more information.
+         * @since v0.11.4
+         */
+        getCipher(): CipherNameAndProtocol;
+        /**
+         * Returns an object representing the type, name, and size of parameter of
+         * an ephemeral key exchange in `perfect forward secrecy` on a client
+         * connection. It returns an empty object when the key exchange is not
+         * ephemeral. As this is only supported on a client socket; `null` is returned
+         * if called on a server socket. The supported types are `'DH'` and `'ECDH'`. The`name` property is available only when type is `'ECDH'`.
+         *
+         * For example: `{ type: 'ECDH', name: 'prime256v1', size: 256 }`.
+         * @since v5.0.0
+         */
+        getEphemeralKeyInfo(): EphemeralKeyInfo | object | null;
+        /**
+         * As the `Finished` messages are message digests of the complete handshake
+         * (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
+         * be used for external authentication procedures when the authentication
+         * provided by SSL/TLS is not desired or is not enough.
+         *
+         * Corresponds to the `SSL_get_finished` routine in OpenSSL and may be used
+         * to implement the `tls-unique` channel binding from [RFC 5929](https://tools.ietf.org/html/rfc5929).
+         * @since v9.9.0
+         * @return The latest `Finished` message that has been sent to the socket as part of a SSL/TLS handshake, or `undefined` if no `Finished` message has been sent yet.
+         */
+        getFinished(): Buffer | undefined;
+        /**
+         * Returns an object representing the peer's certificate. If the peer does not
+         * provide a certificate, an empty object will be returned. If the socket has been
+         * destroyed, `null` will be returned.
+         *
+         * If the full certificate chain was requested, each certificate will include an`issuerCertificate` property containing an object representing its issuer's
+         * certificate.
+         * @since v0.11.4
+         * @param detailed Include the full certificate chain if `true`, otherwise include just the peer's certificate.
+         * @return A certificate object.
+         */
+        getPeerCertificate(detailed: true): DetailedPeerCertificate;
+        getPeerCertificate(detailed?: false): PeerCertificate;
+        getPeerCertificate(detailed?: boolean): PeerCertificate | DetailedPeerCertificate;
+        /**
+         * As the `Finished` messages are message digests of the complete handshake
+         * (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
+         * be used for external authentication procedures when the authentication
+         * provided by SSL/TLS is not desired or is not enough.
+         *
+         * Corresponds to the `SSL_get_peer_finished` routine in OpenSSL and may be used
+         * to implement the `tls-unique` channel binding from [RFC 5929](https://tools.ietf.org/html/rfc5929).
+         * @since v9.9.0
+         * @return The latest `Finished` message that is expected or has actually been received from the socket as part of a SSL/TLS handshake, or `undefined` if there is no `Finished` message so
+         * far.
+         */
+        getPeerFinished(): Buffer | undefined;
+        /**
+         * Returns a string containing the negotiated SSL/TLS protocol version of the
+         * current connection. The value `'unknown'` will be returned for connected
+         * sockets that have not completed the handshaking process. The value `null` will
+         * be returned for server sockets or disconnected client sockets.
+         *
+         * Protocol versions are:
+         *
+         * * `'SSLv3'`
+         * * `'TLSv1'`
+         * * `'TLSv1.1'`
+         * * `'TLSv1.2'`
+         * * `'TLSv1.3'`
+         *
+         * See the OpenSSL [`SSL_get_version`](https://www.openssl.org/docs/man1.1.1/man3/SSL_get_version.html) documentation for more information.
+         * @since v5.7.0
+         */
+        getProtocol(): string | null;
+        /**
+         * Returns the TLS session data or `undefined` if no session was
+         * negotiated. On the client, the data can be provided to the `session` option of {@link connect} to resume the connection. On the server, it may be useful
+         * for debugging.
+         *
+         * See `Session Resumption` for more information.
+         *
+         * Note: `getSession()` works only for TLSv1.2 and below. For TLSv1.3, applications
+         * must use the `'session'` event (it also works for TLSv1.2 and below).
+         * @since v0.11.4
+         */
+        getSession(): Buffer | undefined;
+        /**
+         * See [SSL\_get\_shared\_sigalgs](https://www.openssl.org/docs/man1.1.1/man3/SSL_get_shared_sigalgs.html) for more information.
+         * @since v12.11.0
+         * @return List of signature algorithms shared between the server and the client in the order of decreasing preference.
+         */
+        getSharedSigalgs(): string[];
+        /**
+         * For a client, returns the TLS session ticket if one is available, or`undefined`. For a server, always returns `undefined`.
+         *
+         * It may be useful for debugging.
+         *
+         * See `Session Resumption` for more information.
+         * @since v0.11.4
+         */
+        getTLSTicket(): Buffer | undefined;
+        /**
+         * See `Session Resumption` for more information.
+         * @since v0.5.6
+         * @return `true` if the session was reused, `false` otherwise.
+         */
+        isSessionReused(): boolean;
+        /**
+         * The `tlsSocket.renegotiate()` method initiates a TLS renegotiation process.
+         * Upon completion, the `callback` function will be passed a single argument
+         * that is either an `Error` (if the request failed) or `null`.
+         *
+         * This method can be used to request a peer's certificate after the secure
+         * connection has been established.
+         *
+         * When running as the server, the socket will be destroyed with an error after`handshakeTimeout` timeout.
+         *
+         * For TLSv1.3, renegotiation cannot be initiated, it is not supported by the
+         * protocol.
+         * @since v0.11.8
+         * @param callback If `renegotiate()` returned `true`, callback is attached once to the `'secure'` event. If `renegotiate()` returned `false`, `callback` will be called in the next tick with
+         * an error, unless the `tlsSocket` has been destroyed, in which case `callback` will not be called at all.
+         * @return `true` if renegotiation was initiated, `false` otherwise.
+         */
+        renegotiate(
+            options: {
+                rejectUnauthorized?: boolean | undefined;
+                requestCert?: boolean | undefined;
+            },
+            callback: (err: Error | null) => void
+        ): undefined | boolean;
+        /**
+         * The `tlsSocket.setMaxSendFragment()` method sets the maximum TLS fragment size.
+         * Returns `true` if setting the limit succeeded; `false` otherwise.
+         *
+         * Smaller fragment sizes decrease the buffering latency on the client: larger
+         * fragments are buffered by the TLS layer until the entire fragment is received
+         * and its integrity is verified; large fragments can span multiple roundtrips
+         * and their processing can be delayed due to packet loss or reordering. However,
+         * smaller fragments add extra TLS framing bytes and CPU overhead, which may
+         * decrease overall server throughput.
+         * @since v0.11.11
+         * @param [size=16384] The maximum TLS fragment size. The maximum value is `16384`.
+         */
+        setMaxSendFragment(size: number): boolean;
+        /**
+         * Disables TLS renegotiation for this `TLSSocket` instance. Once called, attempts
+         * to renegotiate will trigger an `'error'` event on the `TLSSocket`.
+         * @since v8.4.0
+         */
+        disableRenegotiation(): void;
+        /**
+         * When enabled, TLS packet trace information is written to `stderr`. This can be
+         * used to debug TLS connection problems.
+         *
+         * The format of the output is identical to the output of`openssl s_client -trace` or `openssl s_server -trace`. While it is produced by
+         * OpenSSL's `SSL_trace()` function, the format is undocumented, can change
+         * without notice, and should not be relied on.
+         * @since v12.2.0
+         */
+        enableTrace(): void;
+        /**
+         * Returns the peer certificate as an `X509Certificate` object.
+         *
+         * If there is no peer certificate, or the socket has been destroyed,`undefined` will be returned.
+         * @since v15.9.0
+         */
+        getPeerX509Certificate(): X509Certificate | undefined;
+        /**
+         * Returns the local certificate as an `X509Certificate` object.
+         *
+         * If there is no local certificate, or the socket has been destroyed,`undefined` will be returned.
+         * @since v15.9.0
+         */
+        getX509Certificate(): X509Certificate | undefined;
+        /**
+         * Keying material is used for validations to prevent different kind of attacks in
+         * network protocols, for example in the specifications of IEEE 802.1X.
+         *
+         * Example
+         *
+         * ```js
+         * const keyingMaterial = tlsSocket.exportKeyingMaterial(
+         *   128,
+         *   'client finished');
+         *
+         * /*
+         *  Example return value of keyingMaterial:
+         *  <Buffer 76 26 af 99 c5 56 8e 42 09 91 ef 9f 93 cb ad 6c 7b 65 f8 53 f1 d8 d9
+         *     12 5a 33 b8 b5 25 df 7b 37 9f e0 e2 4f b8 67 83 a3 2f cd 5d 41 42 4c 91
+         *     74 ef 2c ... 78 more bytes>
+         *
+         * ```
+         *
+         * See the OpenSSL [`SSL_export_keying_material`](https://www.openssl.org/docs/man1.1.1/man3/SSL_export_keying_material.html) documentation for more
+         * information.
+         * @since v13.10.0, v12.17.0
+         * @param length number of bytes to retrieve from keying material
+         * @param label an application specific label, typically this will be a value from the [IANA Exporter Label
+         * Registry](https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#exporter-labels).
+         * @param context Optionally provide a context.
+         * @return requested bytes of the keying material
+         */
+        exportKeyingMaterial(length: number, label: string, context: Buffer): Buffer;
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'OCSPResponse', listener: (response: Buffer) => void): this;
+        addListener(event: 'secureConnect', listener: () => void): this;
+        addListener(event: 'session', listener: (session: Buffer) => void): this;
+        addListener(event: 'keylog', listener: (line: Buffer) => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'OCSPResponse', response: Buffer): boolean;
+        emit(event: 'secureConnect'): boolean;
+        emit(event: 'session', session: Buffer): boolean;
+        emit(event: 'keylog', line: Buffer): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'OCSPResponse', listener: (response: Buffer) => void): this;
+        on(event: 'secureConnect', listener: () => void): this;
+        on(event: 'session', listener: (session: Buffer) => void): this;
+        on(event: 'keylog', listener: (line: Buffer) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'OCSPResponse', listener: (response: Buffer) => void): this;
+        once(event: 'secureConnect', listener: () => void): this;
+        once(event: 'session', listener: (session: Buffer) => void): this;
+        once(event: 'keylog', listener: (line: Buffer) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'OCSPResponse', listener: (response: Buffer) => void): this;
+        prependListener(event: 'secureConnect', listener: () => void): this;
+        prependListener(event: 'session', listener: (session: Buffer) => void): this;
+        prependListener(event: 'keylog', listener: (line: Buffer) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'OCSPResponse', listener: (response: Buffer) => void): this;
+        prependOnceListener(event: 'secureConnect', listener: () => void): this;
+        prependOnceListener(event: 'session', listener: (session: Buffer) => void): this;
+        prependOnceListener(event: 'keylog', listener: (line: Buffer) => void): this;
+    }
+    interface CommonConnectionOptions {
+        /**
+         * An optional TLS context object from tls.createSecureContext()
+         */
+        secureContext?: SecureContext | undefined;
+        /**
+         * When enabled, TLS packet trace information is written to `stderr`. This can be
+         * used to debug TLS connection problems.
+         * @default false
+         */
+        enableTrace?: boolean | undefined;
+        /**
+         * If true the server will request a certificate from clients that
+         * connect and attempt to verify that certificate. Defaults to
+         * false.
+         */
+        requestCert?: boolean | undefined;
+        /**
+         * An array of strings or a Buffer naming possible ALPN protocols.
+         * (Protocols should be ordered by their priority.)
+         */
+        ALPNProtocols?: string[] | Uint8Array[] | Uint8Array | undefined;
+        /**
+         * SNICallback(servername, cb) <Function> A function that will be
+         * called if the client supports SNI TLS extension. Two arguments
+         * will be passed when called: servername and cb. SNICallback should
+         * invoke cb(null, ctx), where ctx is a SecureContext instance.
+         * (tls.createSecureContext(...) can be used to get a proper
+         * SecureContext.) If SNICallback wasn't provided the default callback
+         * with high-level API will be used (see below).
+         */
+        SNICallback?: ((servername: string, cb: (err: Error | null, ctx?: SecureContext) => void) => void) | undefined;
+        /**
+         * If true the server will reject any connection which is not
+         * authorized with the list of supplied CAs. This option only has an
+         * effect if requestCert is true.
+         * @default true
+         */
+        rejectUnauthorized?: boolean | undefined;
+    }
+    interface TlsOptions extends SecureContextOptions, CommonConnectionOptions, net.ServerOpts {
+        /**
+         * Abort the connection if the SSL/TLS handshake does not finish in the
+         * specified number of milliseconds. A 'tlsClientError' is emitted on
+         * the tls.Server object whenever a handshake times out. Default:
+         * 120000 (120 seconds).
+         */
+        handshakeTimeout?: number | undefined;
+        /**
+         * The number of seconds after which a TLS session created by the
+         * server will no longer be resumable. See Session Resumption for more
+         * information. Default: 300.
+         */
+        sessionTimeout?: number | undefined;
+        /**
+         * 48-bytes of cryptographically strong pseudo-random data.
+         */
+        ticketKeys?: Buffer | undefined;
+        /**
+         *
+         * @param socket
+         * @param identity identity parameter sent from the client.
+         * @return pre-shared key that must either be
+         * a buffer or `null` to stop the negotiation process. Returned PSK must be
+         * compatible with the selected cipher's digest.
+         *
+         * When negotiating TLS-PSK (pre-shared keys), this function is called
+         * with the identity provided by the client.
+         * If the return value is `null` the negotiation process will stop and an
+         * "unknown_psk_identity" alert message will be sent to the other party.
+         * If the server wishes to hide the fact that the PSK identity was not known,
+         * the callback must provide some random data as `psk` to make the connection
+         * fail with "decrypt_error" before negotiation is finished.
+         * PSK ciphers are disabled by default, and using TLS-PSK thus
+         * requires explicitly specifying a cipher suite with the `ciphers` option.
+         * More information can be found in the RFC 4279.
+         */
+        pskCallback?(socket: TLSSocket, identity: string): DataView | NodeJS.TypedArray | null;
+        /**
+         * hint to send to a client to help
+         * with selecting the identity during TLS-PSK negotiation. Will be ignored
+         * in TLS 1.3. Upon failing to set pskIdentityHint `tlsClientError` will be
+         * emitted with `ERR_TLS_PSK_SET_IDENTIY_HINT_FAILED` code.
+         */
+        pskIdentityHint?: string | undefined;
+    }
+    interface PSKCallbackNegotation {
+        psk: DataView | NodeJS.TypedArray;
+        identity: string;
+    }
+    interface ConnectionOptions extends SecureContextOptions, CommonConnectionOptions {
+        host?: string | undefined;
+        port?: number | undefined;
+        path?: string | undefined; // Creates unix socket connection to path. If this option is specified, `host` and `port` are ignored.
+        socket?: stream.Duplex | undefined; // Establish secure connection on a given socket rather than creating a new socket
+        checkServerIdentity?: typeof checkServerIdentity | undefined;
+        servername?: string | undefined; // SNI TLS Extension
+        session?: Buffer | undefined;
+        minDHSize?: number | undefined;
+        lookup?: net.LookupFunction | undefined;
+        timeout?: number | undefined;
+        /**
+         * When negotiating TLS-PSK (pre-shared keys), this function is called
+         * with optional identity `hint` provided by the server or `null`
+         * in case of TLS 1.3 where `hint` was removed.
+         * It will be necessary to provide a custom `tls.checkServerIdentity()`
+         * for the connection as the default one will try to check hostname/IP
+         * of the server against the certificate but that's not applicable for PSK
+         * because there won't be a certificate present.
+         * More information can be found in the RFC 4279.
+         *
+         * @param hint message sent from the server to help client
+         * decide which identity to use during negotiation.
+         * Always `null` if TLS 1.3 is used.
+         * @returns Return `null` to stop the negotiation process. `psk` must be
+         * compatible with the selected cipher's digest.
+         * `identity` must use UTF-8 encoding.
+         */
+        pskCallback?(hint: string | null): PSKCallbackNegotation | null;
+    }
+    /**
+     * Accepts encrypted connections using TLS or SSL.
+     * @since v0.3.2
+     */
+    class Server extends net.Server {
+        constructor(secureConnectionListener?: (socket: TLSSocket) => void);
+        constructor(options: TlsOptions, secureConnectionListener?: (socket: TLSSocket) => void);
+        /**
+         * The `server.addContext()` method adds a secure context that will be used if
+         * the client request's SNI name matches the supplied `hostname` (or wildcard).
+         *
+         * When there are multiple matching contexts, the most recently added one is
+         * used.
+         * @since v0.5.3
+         * @param hostname A SNI host name or wildcard (e.g. `'*'`)
+         * @param context An object containing any of the possible properties from the {@link createSecureContext} `options` arguments (e.g. `key`, `cert`, `ca`, etc).
+         */
+        addContext(hostname: string, context: SecureContextOptions): void;
+        /**
+         * Returns the session ticket keys.
+         *
+         * See `Session Resumption` for more information.
+         * @since v3.0.0
+         * @return A 48-byte buffer containing the session ticket keys.
+         */
+        getTicketKeys(): Buffer;
+        /**
+         * The `server.setSecureContext()` method replaces the secure context of an
+         * existing server. Existing connections to the server are not interrupted.
+         * @since v11.0.0
+         * @param options An object containing any of the possible properties from the {@link createSecureContext} `options` arguments (e.g. `key`, `cert`, `ca`, etc).
+         */
+        setSecureContext(options: SecureContextOptions): void;
+        /**
+         * Sets the session ticket keys.
+         *
+         * Changes to the ticket keys are effective only for future server connections.
+         * Existing or currently pending server connections will use the previous keys.
+         *
+         * See `Session Resumption` for more information.
+         * @since v3.0.0
+         * @param keys A 48-byte buffer containing the session ticket keys.
+         */
+        setTicketKeys(keys: Buffer): void;
+        /**
+         * events.EventEmitter
+         * 1. tlsClientError
+         * 2. newSession
+         * 3. OCSPRequest
+         * 4. resumeSession
+         * 5. secureConnection
+         * 6. keylog
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'tlsClientError', listener: (err: Error, tlsSocket: TLSSocket) => void): this;
+        addListener(event: 'newSession', listener: (sessionId: Buffer, sessionData: Buffer, callback: () => void) => void): this;
+        addListener(event: 'OCSPRequest', listener: (certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void) => void): this;
+        addListener(event: 'resumeSession', listener: (sessionId: Buffer, callback: (err: Error | null, sessionData: Buffer | null) => void) => void): this;
+        addListener(event: 'secureConnection', listener: (tlsSocket: TLSSocket) => void): this;
+        addListener(event: 'keylog', listener: (line: Buffer, tlsSocket: TLSSocket) => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'tlsClientError', err: Error, tlsSocket: TLSSocket): boolean;
+        emit(event: 'newSession', sessionId: Buffer, sessionData: Buffer, callback: () => void): boolean;
+        emit(event: 'OCSPRequest', certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void): boolean;
+        emit(event: 'resumeSession', sessionId: Buffer, callback: (err: Error | null, sessionData: Buffer | null) => void): boolean;
+        emit(event: 'secureConnection', tlsSocket: TLSSocket): boolean;
+        emit(event: 'keylog', line: Buffer, tlsSocket: TLSSocket): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'tlsClientError', listener: (err: Error, tlsSocket: TLSSocket) => void): this;
+        on(event: 'newSession', listener: (sessionId: Buffer, sessionData: Buffer, callback: () => void) => void): this;
+        on(event: 'OCSPRequest', listener: (certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void) => void): this;
+        on(event: 'resumeSession', listener: (sessionId: Buffer, callback: (err: Error | null, sessionData: Buffer | null) => void) => void): this;
+        on(event: 'secureConnection', listener: (tlsSocket: TLSSocket) => void): this;
+        on(event: 'keylog', listener: (line: Buffer, tlsSocket: TLSSocket) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'tlsClientError', listener: (err: Error, tlsSocket: TLSSocket) => void): this;
+        once(event: 'newSession', listener: (sessionId: Buffer, sessionData: Buffer, callback: () => void) => void): this;
+        once(event: 'OCSPRequest', listener: (certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void) => void): this;
+        once(event: 'resumeSession', listener: (sessionId: Buffer, callback: (err: Error | null, sessionData: Buffer | null) => void) => void): this;
+        once(event: 'secureConnection', listener: (tlsSocket: TLSSocket) => void): this;
+        once(event: 'keylog', listener: (line: Buffer, tlsSocket: TLSSocket) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'tlsClientError', listener: (err: Error, tlsSocket: TLSSocket) => void): this;
+        prependListener(event: 'newSession', listener: (sessionId: Buffer, sessionData: Buffer, callback: () => void) => void): this;
+        prependListener(event: 'OCSPRequest', listener: (certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void) => void): this;
+        prependListener(event: 'resumeSession', listener: (sessionId: Buffer, callback: (err: Error | null, sessionData: Buffer | null) => void) => void): this;
+        prependListener(event: 'secureConnection', listener: (tlsSocket: TLSSocket) => void): this;
+        prependListener(event: 'keylog', listener: (line: Buffer, tlsSocket: TLSSocket) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'tlsClientError', listener: (err: Error, tlsSocket: TLSSocket) => void): this;
+        prependOnceListener(event: 'newSession', listener: (sessionId: Buffer, sessionData: Buffer, callback: () => void) => void): this;
+        prependOnceListener(event: 'OCSPRequest', listener: (certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void) => void): this;
+        prependOnceListener(event: 'resumeSession', listener: (sessionId: Buffer, callback: (err: Error | null, sessionData: Buffer | null) => void) => void): this;
+        prependOnceListener(event: 'secureConnection', listener: (tlsSocket: TLSSocket) => void): this;
+        prependOnceListener(event: 'keylog', listener: (line: Buffer, tlsSocket: TLSSocket) => void): this;
+    }
+    /**
+     * @deprecated since v0.11.3 Use `tls.TLSSocket` instead.
+     */
+    interface SecurePair {
+        encrypted: TLSSocket;
+        cleartext: TLSSocket;
+    }
+    type SecureVersion = 'TLSv1.3' | 'TLSv1.2' | 'TLSv1.1' | 'TLSv1';
+    interface SecureContextOptions {
+        /**
+         * Optionally override the trusted CA certificates. Default is to trust
+         * the well-known CAs curated by Mozilla. Mozilla's CAs are completely
+         * replaced when CAs are explicitly specified using this option.
+         */
+        ca?: string | Buffer | Array<string | Buffer> | undefined;
+        /**
+         *  Cert chains in PEM format. One cert chain should be provided per
+         *  private key. Each cert chain should consist of the PEM formatted
+         *  certificate for a provided private key, followed by the PEM
+         *  formatted intermediate certificates (if any), in order, and not
+         *  including the root CA (the root CA must be pre-known to the peer,
+         *  see ca). When providing multiple cert chains, they do not have to
+         *  be in the same order as their private keys in key. If the
+         *  intermediate certificates are not provided, the peer will not be
+         *  able to validate the certificate, and the handshake will fail.
+         */
+        cert?: string | Buffer | Array<string | Buffer> | undefined;
+        /**
+         *  Colon-separated list of supported signature algorithms. The list
+         *  can contain digest algorithms (SHA256, MD5 etc.), public key
+         *  algorithms (RSA-PSS, ECDSA etc.), combination of both (e.g
+         *  'RSA+SHA384') or TLS v1.3 scheme names (e.g. rsa_pss_pss_sha512).
+         */
+        sigalgs?: string | undefined;
+        /**
+         * Cipher suite specification, replacing the default. For more
+         * information, see modifying the default cipher suite. Permitted
+         * ciphers can be obtained via tls.getCiphers(). Cipher names must be
+         * uppercased in order for OpenSSL to accept them.
+         */
+        ciphers?: string | undefined;
+        /**
+         * Name of an OpenSSL engine which can provide the client certificate.
+         */
+        clientCertEngine?: string | undefined;
+        /**
+         * PEM formatted CRLs (Certificate Revocation Lists).
+         */
+        crl?: string | Buffer | Array<string | Buffer> | undefined;
+        /**
+         * Diffie Hellman parameters, required for Perfect Forward Secrecy. Use
+         * openssl dhparam to create the parameters. The key length must be
+         * greater than or equal to 1024 bits or else an error will be thrown.
+         * Although 1024 bits is permissible, use 2048 bits or larger for
+         * stronger security. If omitted or invalid, the parameters are
+         * silently discarded and DHE ciphers will not be available.
+         */
+        dhparam?: string | Buffer | undefined;
+        /**
+         * A string describing a named curve or a colon separated list of curve
+         * NIDs or names, for example P-521:P-384:P-256, to use for ECDH key
+         * agreement. Set to auto to select the curve automatically. Use
+         * crypto.getCurves() to obtain a list of available curve names. On
+         * recent releases, openssl ecparam -list_curves will also display the
+         * name and description of each available elliptic curve. Default:
+         * tls.DEFAULT_ECDH_CURVE.
+         */
+        ecdhCurve?: string | undefined;
+        /**
+         * Attempt to use the server's cipher suite preferences instead of the
+         * client's. When true, causes SSL_OP_CIPHER_SERVER_PREFERENCE to be
+         * set in secureOptions
+         */
+        honorCipherOrder?: boolean | undefined;
+        /**
+         * Private keys in PEM format. PEM allows the option of private keys
+         * being encrypted. Encrypted keys will be decrypted with
+         * options.passphrase. Multiple keys using different algorithms can be
+         * provided either as an array of unencrypted key strings or buffers,
+         * or an array of objects in the form {pem: <string|buffer>[,
+         * passphrase: <string>]}. The object form can only occur in an array.
+         * object.passphrase is optional. Encrypted keys will be decrypted with
+         * object.passphrase if provided, or options.passphrase if it is not.
+         */
+        key?: string | Buffer | Array<string | Buffer | KeyObject> | undefined;
+        /**
+         * Name of an OpenSSL engine to get private key from. Should be used
+         * together with privateKeyIdentifier.
+         */
+        privateKeyEngine?: string | undefined;
+        /**
+         * Identifier of a private key managed by an OpenSSL engine. Should be
+         * used together with privateKeyEngine. Should not be set together with
+         * key, because both options define a private key in different ways.
+         */
+        privateKeyIdentifier?: string | undefined;
+        /**
+         * Optionally set the maximum TLS version to allow. One
+         * of `'TLSv1.3'`, `'TLSv1.2'`, `'TLSv1.1'`, or `'TLSv1'`. Cannot be specified along with the
+         * `secureProtocol` option, use one or the other.
+         * **Default:** `'TLSv1.3'`, unless changed using CLI options. Using
+         * `--tls-max-v1.2` sets the default to `'TLSv1.2'`. Using `--tls-max-v1.3` sets the default to
+         * `'TLSv1.3'`. If multiple of the options are provided, the highest maximum is used.
+         */
+        maxVersion?: SecureVersion | undefined;
+        /**
+         * Optionally set the minimum TLS version to allow. One
+         * of `'TLSv1.3'`, `'TLSv1.2'`, `'TLSv1.1'`, or `'TLSv1'`. Cannot be specified along with the
+         * `secureProtocol` option, use one or the other.  It is not recommended to use
+         * less than TLSv1.2, but it may be required for interoperability.
+         * **Default:** `'TLSv1.2'`, unless changed using CLI options. Using
+         * `--tls-v1.0` sets the default to `'TLSv1'`. Using `--tls-v1.1` sets the default to
+         * `'TLSv1.1'`. Using `--tls-min-v1.3` sets the default to
+         * 'TLSv1.3'. If multiple of the options are provided, the lowest minimum is used.
+         */
+        minVersion?: SecureVersion | undefined;
+        /**
+         * Shared passphrase used for a single private key and/or a PFX.
+         */
+        passphrase?: string | undefined;
+        /**
+         * PFX or PKCS12 encoded private key and certificate chain. pfx is an
+         * alternative to providing key and cert individually. PFX is usually
+         * encrypted, if it is, passphrase will be used to decrypt it. Multiple
+         * PFX can be provided either as an array of unencrypted PFX buffers,
+         * or an array of objects in the form {buf: <string|buffer>[,
+         * passphrase: <string>]}. The object form can only occur in an array.
+         * object.passphrase is optional. Encrypted PFX will be decrypted with
+         * object.passphrase if provided, or options.passphrase if it is not.
+         */
+        pfx?: string | Buffer | Array<string | Buffer | PxfObject> | undefined;
+        /**
+         * Optionally affect the OpenSSL protocol behavior, which is not
+         * usually necessary. This should be used carefully if at all! Value is
+         * a numeric bitmask of the SSL_OP_* options from OpenSSL Options
+         */
+        secureOptions?: number | undefined; // Value is a numeric bitmask of the `SSL_OP_*` options
+        /**
+         * Legacy mechanism to select the TLS protocol version to use, it does
+         * not support independent control of the minimum and maximum version,
+         * and does not support limiting the protocol to TLSv1.3. Use
+         * minVersion and maxVersion instead. The possible values are listed as
+         * SSL_METHODS, use the function names as strings. For example, use
+         * 'TLSv1_1_method' to force TLS version 1.1, or 'TLS_method' to allow
+         * any TLS protocol version up to TLSv1.3. It is not recommended to use
+         * TLS versions less than 1.2, but it may be required for
+         * interoperability. Default: none, see minVersion.
+         */
+        secureProtocol?: string | undefined;
+        /**
+         * Opaque identifier used by servers to ensure session state is not
+         * shared between applications. Unused by clients.
+         */
+        sessionIdContext?: string | undefined;
+        /**
+         * 48-bytes of cryptographically strong pseudo-random data.
+         * See Session Resumption for more information.
+         */
+        ticketKeys?: Buffer | undefined;
+        /**
+         * The number of seconds after which a TLS session created by the
+         * server will no longer be resumable. See Session Resumption for more
+         * information. Default: 300.
+         */
+        sessionTimeout?: number | undefined;
+    }
+    interface SecureContext {
+        context: any;
+    }
+    /**
+     * Verifies the certificate `cert` is issued to `hostname`.
+     *
+     * Returns [Error](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error) object, populating it with `reason`, `host`, and `cert` on
+     * failure. On success, returns [undefined](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Undefined_type).
+     *
+     * This function is intended to be used in combination with the`checkServerIdentity` option that can be passed to {@link connect} and as
+     * such operates on a `certificate object`. For other purposes, consider using `x509.checkHost()` instead.
+     *
+     * This function can be overwritten by providing an alternative function as the`options.checkServerIdentity` option that is passed to `tls.connect()`. The
+     * overwriting function can call `tls.checkServerIdentity()` of course, to augment
+     * the checks done with additional verification.
+     *
+     * This function is only called if the certificate passed all other checks, such as
+     * being issued by trusted CA (`options.ca`).
+     *
+     * Earlier versions of Node.js incorrectly accepted certificates for a given`hostname` if a matching `uniformResourceIdentifier` subject alternative name
+     * was present (see [CVE-2021-44531](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44531)). Applications that wish to accept`uniformResourceIdentifier` subject alternative names can use
+     * a custom`options.checkServerIdentity` function that implements the desired behavior.
+     * @since v0.8.4
+     * @param hostname The host name or IP address to verify the certificate against.
+     * @param cert A `certificate object` representing the peer's certificate.
+     */
+    function checkServerIdentity(hostname: string, cert: PeerCertificate): Error | undefined;
+    /**
+     * Creates a new {@link Server}. The `secureConnectionListener`, if provided, is
+     * automatically set as a listener for the `'secureConnection'` event.
+     *
+     * The `ticketKeys` options is automatically shared between `cluster` module
+     * workers.
+     *
+     * The following illustrates a simple echo server:
+     *
+     * ```js
+     * const tls = require('tls');
+     * const fs = require('fs');
+     *
+     * const options = {
+     *   key: fs.readFileSync('server-key.pem'),
+     *   cert: fs.readFileSync('server-cert.pem'),
+     *
+     *   // This is necessary only if using client certificate authentication.
+     *   requestCert: true,
+     *
+     *   // This is necessary only if the client uses a self-signed certificate.
+     *   ca: [ fs.readFileSync('client-cert.pem') ]
+     * };
+     *
+     * const server = tls.createServer(options, (socket) => {
+     *   console.log('server connected',
+     *               socket.authorized ? 'authorized' : 'unauthorized');
+     *   socket.write('welcome!\n');
+     *   socket.setEncoding('utf8');
+     *   socket.pipe(socket);
+     * });
+     * server.listen(8000, () => {
+     *   console.log('server bound');
+     * });
+     * ```
+     *
+     * The server can be tested by connecting to it using the example client from {@link connect}.
+     * @since v0.3.2
+     */
+    function createServer(secureConnectionListener?: (socket: TLSSocket) => void): Server;
+    function createServer(options: TlsOptions, secureConnectionListener?: (socket: TLSSocket) => void): Server;
+    /**
+     * The `callback` function, if specified, will be added as a listener for the `'secureConnect'` event.
+     *
+     * `tls.connect()` returns a {@link TLSSocket} object.
+     *
+     * Unlike the `https` API, `tls.connect()` does not enable the
+     * SNI (Server Name Indication) extension by default, which may cause some
+     * servers to return an incorrect certificate or reject the connection
+     * altogether. To enable SNI, set the `servername` option in addition
+     * to `host`.
+     *
+     * The following illustrates a client for the echo server example from {@link createServer}:
+     *
+     * ```js
+     * // Assumes an echo server that is listening on port 8000.
+     * const tls = require('tls');
+     * const fs = require('fs');
+     *
+     * const options = {
+     *   // Necessary only if the server requires client certificate authentication.
+     *   key: fs.readFileSync('client-key.pem'),
+     *   cert: fs.readFileSync('client-cert.pem'),
+     *
+     *   // Necessary only if the server uses a self-signed certificate.
+     *   ca: [ fs.readFileSync('server-cert.pem') ],
+     *
+     *   // Necessary only if the server's cert isn't for "localhost".
+     *   checkServerIdentity: () => { return null; },
+     * };
+     *
+     * const socket = tls.connect(8000, options, () => {
+     *   console.log('client connected',
+     *               socket.authorized ? 'authorized' : 'unauthorized');
+     *   process.stdin.pipe(socket);
+     *   process.stdin.resume();
+     * });
+     * socket.setEncoding('utf8');
+     * socket.on('data', (data) => {
+     *   console.log(data);
+     * });
+     * socket.on('end', () => {
+     *   console.log('server ends connection');
+     * });
+     * ```
+     * @since v0.11.3
+     */
+    function connect(options: ConnectionOptions, secureConnectListener?: () => void): TLSSocket;
+    function connect(port: number, host?: string, options?: ConnectionOptions, secureConnectListener?: () => void): TLSSocket;
+    function connect(port: number, options?: ConnectionOptions, secureConnectListener?: () => void): TLSSocket;
+    /**
+     * Creates a new secure pair object with two streams, one of which reads and writes
+     * the encrypted data and the other of which reads and writes the cleartext data.
+     * Generally, the encrypted stream is piped to/from an incoming encrypted data
+     * stream and the cleartext one is used as a replacement for the initial encrypted
+     * stream.
+     *
+     * `tls.createSecurePair()` returns a `tls.SecurePair` object with `cleartext` and`encrypted` stream properties.
+     *
+     * Using `cleartext` has the same API as {@link TLSSocket}.
+     *
+     * The `tls.createSecurePair()` method is now deprecated in favor of`tls.TLSSocket()`. For example, the code:
+     *
+     * ```js
+     * pair = tls.createSecurePair(// ... );
+     * pair.encrypted.pipe(socket);
+     * socket.pipe(pair.encrypted);
+     * ```
+     *
+     * can be replaced by:
+     *
+     * ```js
+     * secureSocket = tls.TLSSocket(socket, options);
+     * ```
+     *
+     * where `secureSocket` has the same API as `pair.cleartext`.
+     * @since v0.3.2
+     * @deprecated Since v0.11.3 - Use {@link TLSSocket} instead.
+     * @param context A secure context object as returned by `tls.createSecureContext()`
+     * @param isServer `true` to specify that this TLS connection should be opened as a server.
+     * @param requestCert `true` to specify whether a server should request a certificate from a connecting client. Only applies when `isServer` is `true`.
+     * @param rejectUnauthorized If not `false` a server automatically reject clients with invalid certificates. Only applies when `isServer` is `true`.
+     */
+    function createSecurePair(context?: SecureContext, isServer?: boolean, requestCert?: boolean, rejectUnauthorized?: boolean): SecurePair;
+    /**
+     * {@link createServer} sets the default value of the `honorCipherOrder` option
+     * to `true`, other APIs that create secure contexts leave it unset.
+     *
+     * {@link createServer} uses a 128 bit truncated SHA1 hash value generated
+     * from `process.argv` as the default value of the `sessionIdContext` option, other
+     * APIs that create secure contexts have no default value.
+     *
+     * The `tls.createSecureContext()` method creates a `SecureContext` object. It is
+     * usable as an argument to several `tls` APIs, such as {@link createServer} and `server.addContext()`, but has no public methods.
+     *
+     * A key is _required_ for ciphers that use certificates. Either `key` or`pfx` can be used to provide it.
+     *
+     * If the `ca` option is not given, then Node.js will default to using [Mozilla's publicly trusted list of
+     * CAs](https://hg.mozilla.org/mozilla-central/raw-file/tip/security/nss/lib/ckfw/builtins/certdata.txt).
+     * @since v0.11.13
+     */
+    function createSecureContext(options?: SecureContextOptions): SecureContext;
+    /**
+     * Returns an array with the names of the supported TLS ciphers. The names are
+     * lower-case for historical reasons, but must be uppercased to be used in
+     * the `ciphers` option of {@link createSecureContext}.
+     *
+     * Not all supported ciphers are enabled by default. See `Modifying the default TLS cipher suite`.
+     *
+     * Cipher names that start with `'tls_'` are for TLSv1.3, all the others are for
+     * TLSv1.2 and below.
+     *
+     * ```js
+     * console.log(tls.getCiphers()); // ['aes128-gcm-sha256', 'aes128-sha', ...]
+     * ```
+     * @since v0.10.2
+     */
+    function getCiphers(): string[];
+    /**
+     * The default curve name to use for ECDH key agreement in a tls server.
+     * The default value is 'auto'. See tls.createSecureContext() for further
+     * information.
+     */
+    let DEFAULT_ECDH_CURVE: string;
+    /**
+     * The default value of the maxVersion option of
+     * tls.createSecureContext(). It can be assigned any of the supported TLS
+     * protocol versions, 'TLSv1.3', 'TLSv1.2', 'TLSv1.1', or 'TLSv1'. Default:
+     * 'TLSv1.3', unless changed using CLI options. Using --tls-max-v1.2 sets
+     * the default to 'TLSv1.2'. Using --tls-max-v1.3 sets the default to
+     * 'TLSv1.3'. If multiple of the options are provided, the highest maximum
+     * is used.
+     */
+    let DEFAULT_MAX_VERSION: SecureVersion;
+    /**
+     * The default value of the minVersion option of tls.createSecureContext().
+     * It can be assigned any of the supported TLS protocol versions,
+     * 'TLSv1.3', 'TLSv1.2', 'TLSv1.1', or 'TLSv1'. Default: 'TLSv1.2', unless
+     * changed using CLI options. Using --tls-min-v1.0 sets the default to
+     * 'TLSv1'. Using --tls-min-v1.1 sets the default to 'TLSv1.1'. Using
+     * --tls-min-v1.3 sets the default to 'TLSv1.3'. If multiple of the options
+     * are provided, the lowest minimum is used.
+     */
+    let DEFAULT_MIN_VERSION: SecureVersion;
+    /**
+     * An immutable array of strings representing the root certificates (in PEM
+     * format) used for verifying peer certificates. This is the default value
+     * of the ca option to tls.createSecureContext().
+     */
+    const rootCertificates: ReadonlyArray<string>;
+}
+declare module 'node:tls' {
+    export * from 'tls';
+}
diff --git a/igv_component/node_modules/@types/node/trace_events.d.ts b/igv_component/node_modules/@types/node/trace_events.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d47aa9311ec85754ce71d1ee64c8b3bb9f509b20
--- /dev/null
+++ b/igv_component/node_modules/@types/node/trace_events.d.ts
@@ -0,0 +1,171 @@
+/**
+ * The `trace_events` module provides a mechanism to centralize tracing information
+ * generated by V8, Node.js core, and userspace code.
+ *
+ * Tracing can be enabled with the `--trace-event-categories` command-line flag
+ * or by using the `trace_events` module. The `--trace-event-categories` flag
+ * accepts a list of comma-separated category names.
+ *
+ * The available categories are:
+ *
+ * * `node`: An empty placeholder.
+ * * `node.async_hooks`: Enables capture of detailed `async_hooks` trace data.
+ * The `async_hooks` events have a unique `asyncId` and a special `triggerId` `triggerAsyncId` property.
+ * * `node.bootstrap`: Enables capture of Node.js bootstrap milestones.
+ * * `node.console`: Enables capture of `console.time()` and `console.count()`output.
+ * * `node.dns.native`: Enables capture of trace data for DNS queries.
+ * * `node.environment`: Enables capture of Node.js Environment milestones.
+ * * `node.fs.sync`: Enables capture of trace data for file system sync methods.
+ * * `node.perf`: Enables capture of `Performance API` measurements.
+ *    * `node.perf.usertiming`: Enables capture of only Performance API User Timing
+ *    measures and marks.
+ *    * `node.perf.timerify`: Enables capture of only Performance API timerify
+ *    measurements.
+ * * `node.promises.rejections`: Enables capture of trace data tracking the number
+ * of unhandled Promise rejections and handled-after-rejections.
+ * * `node.vm.script`: Enables capture of trace data for the `vm` module's`runInNewContext()`, `runInContext()`, and `runInThisContext()` methods.
+ * * `v8`: The `V8` events are GC, compiling, and execution related.
+ *
+ * By default the `node`, `node.async_hooks`, and `v8` categories are enabled.
+ *
+ * ```bash
+ * node --trace-event-categories v8,node,node.async_hooks server.js
+ * ```
+ *
+ * Prior versions of Node.js required the use of the `--trace-events-enabled`flag to enable trace events. This requirement has been removed. However, the`--trace-events-enabled` flag _may_ still be
+ * used and will enable the`node`, `node.async_hooks`, and `v8` trace event categories by default.
+ *
+ * ```bash
+ * node --trace-events-enabled
+ *
+ * # is equivalent to
+ *
+ * node --trace-event-categories v8,node,node.async_hooks
+ * ```
+ *
+ * Alternatively, trace events may be enabled using the `trace_events` module:
+ *
+ * ```js
+ * const trace_events = require('trace_events');
+ * const tracing = trace_events.createTracing({ categories: ['node.perf'] });
+ * tracing.enable();  // Enable trace event capture for the 'node.perf' category
+ *
+ * // do work
+ *
+ * tracing.disable();  // Disable trace event capture for the 'node.perf' category
+ * ```
+ *
+ * Running Node.js with tracing enabled will produce log files that can be opened
+ * in the [`chrome://tracing`](https://www.chromium.org/developers/how-tos/trace-event-profiling-tool) tab of Chrome.
+ *
+ * The logging file is by default called `node_trace.${rotation}.log`, where`${rotation}` is an incrementing log-rotation id. The filepath pattern can
+ * be specified with `--trace-event-file-pattern` that accepts a template
+ * string that supports `${rotation}` and `${pid}`:
+ *
+ * ```bash
+ * node --trace-event-categories v8 --trace-event-file-pattern '${pid}-${rotation}.log' server.js
+ * ```
+ *
+ * To guarantee that the log file is properly generated after signal events like`SIGINT`, `SIGTERM`, or `SIGBREAK`, make sure to have the appropriate handlers
+ * in your code, such as:
+ *
+ * ```js
+ * process.on('SIGINT', function onSigint() {
+ *   console.info('Received SIGINT.');
+ *   process.exit(130);  // Or applicable exit code depending on OS and signal
+ * });
+ * ```
+ *
+ * The tracing system uses the same time source
+ * as the one used by `process.hrtime()`.
+ * However the trace-event timestamps are expressed in microseconds,
+ * unlike `process.hrtime()` which returns nanoseconds.
+ *
+ * The features from this module are not available in `Worker` threads.
+ * @experimental
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/trace_events.js)
+ */
+declare module 'trace_events' {
+    /**
+     * The `Tracing` object is used to enable or disable tracing for sets of
+     * categories. Instances are created using the
+     * `trace_events.createTracing()` method.
+     *
+     * When created, the `Tracing` object is disabled. Calling the
+     * `tracing.enable()` method adds the categories to the set of enabled trace
+     * event categories. Calling `tracing.disable()` will remove the categories
+     * from the set of enabled trace event categories.
+     */
+    interface Tracing {
+        /**
+         * A comma-separated list of the trace event categories covered by this
+         * `Tracing` object.
+         */
+        readonly categories: string;
+        /**
+         * Disables this `Tracing` object.
+         *
+         * Only trace event categories _not_ covered by other enabled `Tracing`
+         * objects and _not_ specified by the `--trace-event-categories` flag
+         * will be disabled.
+         */
+        disable(): void;
+        /**
+         * Enables this `Tracing` object for the set of categories covered by
+         * the `Tracing` object.
+         */
+        enable(): void;
+        /**
+         * `true` only if the `Tracing` object has been enabled.
+         */
+        readonly enabled: boolean;
+    }
+    interface CreateTracingOptions {
+        /**
+         * An array of trace category names. Values included in the array are
+         * coerced to a string when possible. An error will be thrown if the
+         * value cannot be coerced.
+         */
+        categories: string[];
+    }
+    /**
+     * Creates and returns a `Tracing` object for the given set of `categories`.
+     *
+     * ```js
+     * const trace_events = require('trace_events');
+     * const categories = ['node.perf', 'node.async_hooks'];
+     * const tracing = trace_events.createTracing({ categories });
+     * tracing.enable();
+     * // do stuff
+     * tracing.disable();
+     * ```
+     * @since v10.0.0
+     * @return .
+     */
+    function createTracing(options: CreateTracingOptions): Tracing;
+    /**
+     * Returns a comma-separated list of all currently-enabled trace event
+     * categories. The current set of enabled trace event categories is determined
+     * by the _union_ of all currently-enabled `Tracing` objects and any categories
+     * enabled using the `--trace-event-categories` flag.
+     *
+     * Given the file `test.js` below, the command`node --trace-event-categories node.perf test.js` will print`'node.async_hooks,node.perf'` to the console.
+     *
+     * ```js
+     * const trace_events = require('trace_events');
+     * const t1 = trace_events.createTracing({ categories: ['node.async_hooks'] });
+     * const t2 = trace_events.createTracing({ categories: ['node.perf'] });
+     * const t3 = trace_events.createTracing({ categories: ['v8'] });
+     *
+     * t1.enable();
+     * t2.enable();
+     *
+     * console.log(trace_events.getEnabledCategories());
+     * ```
+     * @since v10.0.0
+     */
+    function getEnabledCategories(): string | undefined;
+}
+declare module 'node:trace_events' {
+    export * from 'trace_events';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/assert.d.ts b/igv_component/node_modules/@types/node/ts4.8/assert.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..8e02a66a0c5da00bab59fbaf8e17bedecd976ffd
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/assert.d.ts
@@ -0,0 +1,911 @@
+/**
+ * The `assert` module provides a set of assertion functions for verifying
+ * invariants.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/assert.js)
+ */
+declare module 'assert' {
+    /**
+     * An alias of {@link ok}.
+     * @since v0.5.9
+     * @param value The input that is checked for being truthy.
+     */
+    function assert(value: unknown, message?: string | Error): asserts value;
+    namespace assert {
+        /**
+         * Indicates the failure of an assertion. All errors thrown by the `assert` module
+         * will be instances of the `AssertionError` class.
+         */
+        class AssertionError extends Error {
+            actual: unknown;
+            expected: unknown;
+            operator: string;
+            generatedMessage: boolean;
+            code: 'ERR_ASSERTION';
+            constructor(options?: {
+                /** If provided, the error message is set to this value. */
+                message?: string | undefined;
+                /** The `actual` property on the error instance. */
+                actual?: unknown | undefined;
+                /** The `expected` property on the error instance. */
+                expected?: unknown | undefined;
+                /** The `operator` property on the error instance. */
+                operator?: string | undefined;
+                /** If provided, the generated stack trace omits frames before this function. */
+                // tslint:disable-next-line:ban-types
+                stackStartFn?: Function | undefined;
+            });
+        }
+        /**
+         * This feature is currently experimental and behavior might still change.
+         * @since v14.2.0, v12.19.0
+         * @experimental
+         */
+        class CallTracker {
+            /**
+             * The wrapper function is expected to be called exactly `exact` times. If the
+             * function has not been called exactly `exact` times when `tracker.verify()` is called, then `tracker.verify()` will throw an
+             * error.
+             *
+             * ```js
+             * import assert from 'assert';
+             *
+             * // Creates call tracker.
+             * const tracker = new assert.CallTracker();
+             *
+             * function func() {}
+             *
+             * // Returns a function that wraps func() that must be called exact times
+             * // before tracker.verify().
+             * const callsfunc = tracker.calls(func);
+             * ```
+             * @since v14.2.0, v12.19.0
+             * @param [fn='A no-op function']
+             * @param [exact=1]
+             * @return that wraps `fn`.
+             */
+            calls(exact?: number): () => void;
+            calls<Func extends (...args: any[]) => any>(fn?: Func, exact?: number): Func;
+            /**
+             * The arrays contains information about the expected and actual number of calls of
+             * the functions that have not been called the expected number of times.
+             *
+             * ```js
+             * import assert from 'assert';
+             *
+             * // Creates call tracker.
+             * const tracker = new assert.CallTracker();
+             *
+             * function func() {}
+             *
+             * function foo() {}
+             *
+             * // Returns a function that wraps func() that must be called exact times
+             * // before tracker.verify().
+             * const callsfunc = tracker.calls(func, 2);
+             *
+             * // Returns an array containing information on callsfunc()
+             * tracker.report();
+             * // [
+             * //  {
+             * //    message: 'Expected the func function to be executed 2 time(s) but was
+             * //    executed 0 time(s).',
+             * //    actual: 0,
+             * //    expected: 2,
+             * //    operator: 'func',
+             * //    stack: stack trace
+             * //  }
+             * // ]
+             * ```
+             * @since v14.2.0, v12.19.0
+             * @return of objects containing information about the wrapper functions returned by `calls`.
+             */
+            report(): CallTrackerReportInformation[];
+            /**
+             * Iterates through the list of functions passed to `tracker.calls()` and will throw an error for functions that
+             * have not been called the expected number of times.
+             *
+             * ```js
+             * import assert from 'assert';
+             *
+             * // Creates call tracker.
+             * const tracker = new assert.CallTracker();
+             *
+             * function func() {}
+             *
+             * // Returns a function that wraps func() that must be called exact times
+             * // before tracker.verify().
+             * const callsfunc = tracker.calls(func, 2);
+             *
+             * callsfunc();
+             *
+             * // Will throw an error since callsfunc() was only called once.
+             * tracker.verify();
+             * ```
+             * @since v14.2.0, v12.19.0
+             */
+            verify(): void;
+        }
+        interface CallTrackerReportInformation {
+            message: string;
+            /** The actual number of times the function was called. */
+            actual: number;
+            /** The number of times the function was expected to be called. */
+            expected: number;
+            /** The name of the function that is wrapped. */
+            operator: string;
+            /** A stack trace of the function. */
+            stack: object;
+        }
+        type AssertPredicate = RegExp | (new () => object) | ((thrown: unknown) => boolean) | object | Error;
+        /**
+         * Throws an `AssertionError` with the provided error message or a default
+         * error message. If the `message` parameter is an instance of an `Error` then
+         * it will be thrown instead of the `AssertionError`.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.fail();
+         * // AssertionError [ERR_ASSERTION]: Failed
+         *
+         * assert.fail('boom');
+         * // AssertionError [ERR_ASSERTION]: boom
+         *
+         * assert.fail(new TypeError('need array'));
+         * // TypeError: need array
+         * ```
+         *
+         * Using `assert.fail()` with more than two arguments is possible but deprecated.
+         * See below for further details.
+         * @since v0.1.21
+         * @param [message='Failed']
+         */
+        function fail(message?: string | Error): never;
+        /** @deprecated since v10.0.0 - use fail([message]) or other assert functions instead. */
+        function fail(
+            actual: unknown,
+            expected: unknown,
+            message?: string | Error,
+            operator?: string,
+            // tslint:disable-next-line:ban-types
+            stackStartFn?: Function
+        ): never;
+        /**
+         * Tests if `value` is truthy. It is equivalent to`assert.equal(!!value, true, message)`.
+         *
+         * If `value` is not truthy, an `AssertionError` is thrown with a `message`property set equal to the value of the `message` parameter. If the `message`parameter is `undefined`, a default
+         * error message is assigned. If the `message`parameter is an instance of an `Error` then it will be thrown instead of the`AssertionError`.
+         * If no arguments are passed in at all `message` will be set to the string:`` 'No value argument passed to `assert.ok()`' ``.
+         *
+         * Be aware that in the `repl` the error message will be different to the one
+         * thrown in a file! See below for further details.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.ok(true);
+         * // OK
+         * assert.ok(1);
+         * // OK
+         *
+         * assert.ok();
+         * // AssertionError: No value argument passed to `assert.ok()`
+         *
+         * assert.ok(false, 'it\'s false');
+         * // AssertionError: it's false
+         *
+         * // In the repl:
+         * assert.ok(typeof 123 === 'string');
+         * // AssertionError: false == true
+         *
+         * // In a file (e.g. test.js):
+         * assert.ok(typeof 123 === 'string');
+         * // AssertionError: The expression evaluated to a falsy value:
+         * //
+         * //   assert.ok(typeof 123 === 'string')
+         *
+         * assert.ok(false);
+         * // AssertionError: The expression evaluated to a falsy value:
+         * //
+         * //   assert.ok(false)
+         *
+         * assert.ok(0);
+         * // AssertionError: The expression evaluated to a falsy value:
+         * //
+         * //   assert.ok(0)
+         * ```
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * // Using `assert()` works the same:
+         * assert(0);
+         * // AssertionError: The expression evaluated to a falsy value:
+         * //
+         * //   assert(0)
+         * ```
+         * @since v0.1.21
+         */
+        function ok(value: unknown, message?: string | Error): asserts value;
+        /**
+         * **Strict assertion mode**
+         *
+         * An alias of {@link strictEqual}.
+         *
+         * **Legacy assertion mode**
+         *
+         * > Stability: 3 - Legacy: Use {@link strictEqual} instead.
+         *
+         * Tests shallow, coercive equality between the `actual` and `expected` parameters
+         * using the [`==` operator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Equality). `NaN` is specially handled
+         * and treated as being identical if both sides are `NaN`.
+         *
+         * ```js
+         * import assert from 'assert';
+         *
+         * assert.equal(1, 1);
+         * // OK, 1 == 1
+         * assert.equal(1, '1');
+         * // OK, 1 == '1'
+         * assert.equal(NaN, NaN);
+         * // OK
+         *
+         * assert.equal(1, 2);
+         * // AssertionError: 1 == 2
+         * assert.equal({ a: { b: 1 } }, { a: { b: 1 } });
+         * // AssertionError: { a: { b: 1 } } == { a: { b: 1 } }
+         * ```
+         *
+         * If the values are not equal, an `AssertionError` is thrown with a `message`property set equal to the value of the `message` parameter. If the `message`parameter is undefined, a default
+         * error message is assigned. If the `message`parameter is an instance of an `Error` then it will be thrown instead of the`AssertionError`.
+         * @since v0.1.21
+         */
+        function equal(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * **Strict assertion mode**
+         *
+         * An alias of {@link notStrictEqual}.
+         *
+         * **Legacy assertion mode**
+         *
+         * > Stability: 3 - Legacy: Use {@link notStrictEqual} instead.
+         *
+         * Tests shallow, coercive inequality with the [`!=` operator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Inequality). `NaN` is
+         * specially handled and treated as being identical if both sides are `NaN`.
+         *
+         * ```js
+         * import assert from 'assert';
+         *
+         * assert.notEqual(1, 2);
+         * // OK
+         *
+         * assert.notEqual(1, 1);
+         * // AssertionError: 1 != 1
+         *
+         * assert.notEqual(1, '1');
+         * // AssertionError: 1 != '1'
+         * ```
+         *
+         * If the values are equal, an `AssertionError` is thrown with a `message`property set equal to the value of the `message` parameter. If the `message`parameter is undefined, a default error
+         * message is assigned. If the `message`parameter is an instance of an `Error` then it will be thrown instead of the`AssertionError`.
+         * @since v0.1.21
+         */
+        function notEqual(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * **Strict assertion mode**
+         *
+         * An alias of {@link deepStrictEqual}.
+         *
+         * **Legacy assertion mode**
+         *
+         * > Stability: 3 - Legacy: Use {@link deepStrictEqual} instead.
+         *
+         * Tests for deep equality between the `actual` and `expected` parameters. Consider
+         * using {@link deepStrictEqual} instead. {@link deepEqual} can have
+         * surprising results.
+         *
+         * _Deep equality_ means that the enumerable "own" properties of child objects
+         * are also recursively evaluated by the following rules.
+         * @since v0.1.21
+         */
+        function deepEqual(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * **Strict assertion mode**
+         *
+         * An alias of {@link notDeepStrictEqual}.
+         *
+         * **Legacy assertion mode**
+         *
+         * > Stability: 3 - Legacy: Use {@link notDeepStrictEqual} instead.
+         *
+         * Tests for any deep inequality. Opposite of {@link deepEqual}.
+         *
+         * ```js
+         * import assert from 'assert';
+         *
+         * const obj1 = {
+         *   a: {
+         *     b: 1
+         *   }
+         * };
+         * const obj2 = {
+         *   a: {
+         *     b: 2
+         *   }
+         * };
+         * const obj3 = {
+         *   a: {
+         *     b: 1
+         *   }
+         * };
+         * const obj4 = Object.create(obj1);
+         *
+         * assert.notDeepEqual(obj1, obj1);
+         * // AssertionError: { a: { b: 1 } } notDeepEqual { a: { b: 1 } }
+         *
+         * assert.notDeepEqual(obj1, obj2);
+         * // OK
+         *
+         * assert.notDeepEqual(obj1, obj3);
+         * // AssertionError: { a: { b: 1 } } notDeepEqual { a: { b: 1 } }
+         *
+         * assert.notDeepEqual(obj1, obj4);
+         * // OK
+         * ```
+         *
+         * If the values are deeply equal, an `AssertionError` is thrown with a`message` property set equal to the value of the `message` parameter. If the`message` parameter is undefined, a default
+         * error message is assigned. If the`message` parameter is an instance of an `Error` then it will be thrown
+         * instead of the `AssertionError`.
+         * @since v0.1.21
+         */
+        function notDeepEqual(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * Tests strict equality between the `actual` and `expected` parameters as
+         * determined by [`Object.is()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is).
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.strictEqual(1, 2);
+         * // AssertionError [ERR_ASSERTION]: Expected inputs to be strictly equal:
+         * //
+         * // 1 !== 2
+         *
+         * assert.strictEqual(1, 1);
+         * // OK
+         *
+         * assert.strictEqual('Hello foobar', 'Hello World!');
+         * // AssertionError [ERR_ASSERTION]: Expected inputs to be strictly equal:
+         * // + actual - expected
+         * //
+         * // + 'Hello foobar'
+         * // - 'Hello World!'
+         * //          ^
+         *
+         * const apples = 1;
+         * const oranges = 2;
+         * assert.strictEqual(apples, oranges, `apples ${apples} !== oranges ${oranges}`);
+         * // AssertionError [ERR_ASSERTION]: apples 1 !== oranges 2
+         *
+         * assert.strictEqual(1, '1', new TypeError('Inputs are not identical'));
+         * // TypeError: Inputs are not identical
+         * ```
+         *
+         * If the values are not strictly equal, an `AssertionError` is thrown with a`message` property set equal to the value of the `message` parameter. If the`message` parameter is undefined, a
+         * default error message is assigned. If the`message` parameter is an instance of an `Error` then it will be thrown
+         * instead of the `AssertionError`.
+         * @since v0.1.21
+         */
+        function strictEqual<T>(actual: unknown, expected: T, message?: string | Error): asserts actual is T;
+        /**
+         * Tests strict inequality between the `actual` and `expected` parameters as
+         * determined by [`Object.is()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is).
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.notStrictEqual(1, 2);
+         * // OK
+         *
+         * assert.notStrictEqual(1, 1);
+         * // AssertionError [ERR_ASSERTION]: Expected "actual" to be strictly unequal to:
+         * //
+         * // 1
+         *
+         * assert.notStrictEqual(1, '1');
+         * // OK
+         * ```
+         *
+         * If the values are strictly equal, an `AssertionError` is thrown with a`message` property set equal to the value of the `message` parameter. If the`message` parameter is undefined, a
+         * default error message is assigned. If the`message` parameter is an instance of an `Error` then it will be thrown
+         * instead of the `AssertionError`.
+         * @since v0.1.21
+         */
+        function notStrictEqual(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * Tests for deep equality between the `actual` and `expected` parameters.
+         * "Deep" equality means that the enumerable "own" properties of child objects
+         * are recursively evaluated also by the following rules.
+         * @since v1.2.0
+         */
+        function deepStrictEqual<T>(actual: unknown, expected: T, message?: string | Error): asserts actual is T;
+        /**
+         * Tests for deep strict inequality. Opposite of {@link deepStrictEqual}.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.notDeepStrictEqual({ a: 1 }, { a: '1' });
+         * // OK
+         * ```
+         *
+         * If the values are deeply and strictly equal, an `AssertionError` is thrown
+         * with a `message` property set equal to the value of the `message` parameter. If
+         * the `message` parameter is undefined, a default error message is assigned. If
+         * the `message` parameter is an instance of an `Error` then it will be thrown
+         * instead of the `AssertionError`.
+         * @since v1.2.0
+         */
+        function notDeepStrictEqual(actual: unknown, expected: unknown, message?: string | Error): void;
+        /**
+         * Expects the function `fn` to throw an error.
+         *
+         * If specified, `error` can be a [`Class`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes),
+         * [`RegExp`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions), a validation function,
+         * a validation object where each property will be tested for strict deep equality,
+         * or an instance of error where each property will be tested for strict deep
+         * equality including the non-enumerable `message` and `name` properties. When
+         * using an object, it is also possible to use a regular expression, when
+         * validating against a string property. See below for examples.
+         *
+         * If specified, `message` will be appended to the message provided by the`AssertionError` if the `fn` call fails to throw or in case the error validation
+         * fails.
+         *
+         * Custom validation object/error instance:
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * const err = new TypeError('Wrong value');
+         * err.code = 404;
+         * err.foo = 'bar';
+         * err.info = {
+         *   nested: true,
+         *   baz: 'text'
+         * };
+         * err.reg = /abc/i;
+         *
+         * assert.throws(
+         *   () => {
+         *     throw err;
+         *   },
+         *   {
+         *     name: 'TypeError',
+         *     message: 'Wrong value',
+         *     info: {
+         *       nested: true,
+         *       baz: 'text'
+         *     }
+         *     // Only properties on the validation object will be tested for.
+         *     // Using nested objects requires all properties to be present. Otherwise
+         *     // the validation is going to fail.
+         *   }
+         * );
+         *
+         * // Using regular expressions to validate error properties:
+         * throws(
+         *   () => {
+         *     throw err;
+         *   },
+         *   {
+         *     // The `name` and `message` properties are strings and using regular
+         *     // expressions on those will match against the string. If they fail, an
+         *     // error is thrown.
+         *     name: /^TypeError$/,
+         *     message: /Wrong/,
+         *     foo: 'bar',
+         *     info: {
+         *       nested: true,
+         *       // It is not possible to use regular expressions for nested properties!
+         *       baz: 'text'
+         *     },
+         *     // The `reg` property contains a regular expression and only if the
+         *     // validation object contains an identical regular expression, it is going
+         *     // to pass.
+         *     reg: /abc/i
+         *   }
+         * );
+         *
+         * // Fails due to the different `message` and `name` properties:
+         * throws(
+         *   () => {
+         *     const otherErr = new Error('Not found');
+         *     // Copy all enumerable properties from `err` to `otherErr`.
+         *     for (const [key, value] of Object.entries(err)) {
+         *       otherErr[key] = value;
+         *     }
+         *     throw otherErr;
+         *   },
+         *   // The error's `message` and `name` properties will also be checked when using
+         *   // an error as validation object.
+         *   err
+         * );
+         * ```
+         *
+         * Validate instanceof using constructor:
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.throws(
+         *   () => {
+         *     throw new Error('Wrong value');
+         *   },
+         *   Error
+         * );
+         * ```
+         *
+         * Validate error message using [`RegExp`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions):
+         *
+         * Using a regular expression runs `.toString` on the error object, and will
+         * therefore also include the error name.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.throws(
+         *   () => {
+         *     throw new Error('Wrong value');
+         *   },
+         *   /^Error: Wrong value$/
+         * );
+         * ```
+         *
+         * Custom error validation:
+         *
+         * The function must return `true` to indicate all internal validations passed.
+         * It will otherwise fail with an `AssertionError`.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.throws(
+         *   () => {
+         *     throw new Error('Wrong value');
+         *   },
+         *   (err) => {
+         *     assert(err instanceof Error);
+         *     assert(/value/.test(err));
+         *     // Avoid returning anything from validation functions besides `true`.
+         *     // Otherwise, it's not clear what part of the validation failed. Instead,
+         *     // throw an error about the specific validation that failed (as done in this
+         *     // example) and add as much helpful debugging information to that error as
+         *     // possible.
+         *     return true;
+         *   },
+         *   'unexpected error'
+         * );
+         * ```
+         *
+         * `error` cannot be a string. If a string is provided as the second
+         * argument, then `error` is assumed to be omitted and the string will be used for`message` instead. This can lead to easy-to-miss mistakes. Using the same
+         * message as the thrown error message is going to result in an`ERR_AMBIGUOUS_ARGUMENT` error. Please read the example below carefully if using
+         * a string as the second argument gets considered:
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * function throwingFirst() {
+         *   throw new Error('First');
+         * }
+         *
+         * function throwingSecond() {
+         *   throw new Error('Second');
+         * }
+         *
+         * function notThrowing() {}
+         *
+         * // The second argument is a string and the input function threw an Error.
+         * // The first case will not throw as it does not match for the error message
+         * // thrown by the input function!
+         * assert.throws(throwingFirst, 'Second');
+         * // In the next example the message has no benefit over the message from the
+         * // error and since it is not clear if the user intended to actually match
+         * // against the error message, Node.js throws an `ERR_AMBIGUOUS_ARGUMENT` error.
+         * assert.throws(throwingSecond, 'Second');
+         * // TypeError [ERR_AMBIGUOUS_ARGUMENT]
+         *
+         * // The string is only used (as message) in case the function does not throw:
+         * assert.throws(notThrowing, 'Second');
+         * // AssertionError [ERR_ASSERTION]: Missing expected exception: Second
+         *
+         * // If it was intended to match for the error message do this instead:
+         * // It does not throw because the error messages match.
+         * assert.throws(throwingSecond, /Second$/);
+         *
+         * // If the error message does not match, an AssertionError is thrown.
+         * assert.throws(throwingFirst, /Second$/);
+         * // AssertionError [ERR_ASSERTION]
+         * ```
+         *
+         * Due to the confusing error-prone notation, avoid a string as the second
+         * argument.
+         * @since v0.1.21
+         */
+        function throws(block: () => unknown, message?: string | Error): void;
+        function throws(block: () => unknown, error: AssertPredicate, message?: string | Error): void;
+        /**
+         * Asserts that the function `fn` does not throw an error.
+         *
+         * Using `assert.doesNotThrow()` is actually not useful because there
+         * is no benefit in catching an error and then rethrowing it. Instead, consider
+         * adding a comment next to the specific code path that should not throw and keep
+         * error messages as expressive as possible.
+         *
+         * When `assert.doesNotThrow()` is called, it will immediately call the `fn`function.
+         *
+         * If an error is thrown and it is the same type as that specified by the `error`parameter, then an `AssertionError` is thrown. If the error is of a
+         * different type, or if the `error` parameter is undefined, the error is
+         * propagated back to the caller.
+         *
+         * If specified, `error` can be a [`Class`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes),
+         * [`RegExp`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions) or a validation
+         * function. See {@link throws} for more details.
+         *
+         * The following, for instance, will throw the `TypeError` because there is no
+         * matching error type in the assertion:
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.doesNotThrow(
+         *   () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   SyntaxError
+         * );
+         * ```
+         *
+         * However, the following will result in an `AssertionError` with the message
+         * 'Got unwanted exception...':
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.doesNotThrow(
+         *   () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   TypeError
+         * );
+         * ```
+         *
+         * If an `AssertionError` is thrown and a value is provided for the `message`parameter, the value of `message` will be appended to the `AssertionError` message:
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.doesNotThrow(
+         *   () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   /Wrong value/,
+         *   'Whoops'
+         * );
+         * // Throws: AssertionError: Got unwanted exception: Whoops
+         * ```
+         * @since v0.1.21
+         */
+        function doesNotThrow(block: () => unknown, message?: string | Error): void;
+        function doesNotThrow(block: () => unknown, error: AssertPredicate, message?: string | Error): void;
+        /**
+         * Throws `value` if `value` is not `undefined` or `null`. This is useful when
+         * testing the `error` argument in callbacks. The stack trace contains all frames
+         * from the error passed to `ifError()` including the potential new frames for`ifError()` itself.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.ifError(null);
+         * // OK
+         * assert.ifError(0);
+         * // AssertionError [ERR_ASSERTION]: ifError got unwanted exception: 0
+         * assert.ifError('error');
+         * // AssertionError [ERR_ASSERTION]: ifError got unwanted exception: 'error'
+         * assert.ifError(new Error());
+         * // AssertionError [ERR_ASSERTION]: ifError got unwanted exception: Error
+         *
+         * // Create some random error frames.
+         * let err;
+         * (function errorFrame() {
+         *   err = new Error('test error');
+         * })();
+         *
+         * (function ifErrorFrame() {
+         *   assert.ifError(err);
+         * })();
+         * // AssertionError [ERR_ASSERTION]: ifError got unwanted exception: test error
+         * //     at ifErrorFrame
+         * //     at errorFrame
+         * ```
+         * @since v0.1.97
+         */
+        function ifError(value: unknown): asserts value is null | undefined;
+        /**
+         * Awaits the `asyncFn` promise or, if `asyncFn` is a function, immediately
+         * calls the function and awaits the returned promise to complete. It will then
+         * check that the promise is rejected.
+         *
+         * If `asyncFn` is a function and it throws an error synchronously,`assert.rejects()` will return a rejected `Promise` with that error. If the
+         * function does not return a promise, `assert.rejects()` will return a rejected`Promise` with an `ERR_INVALID_RETURN_VALUE` error. In both cases the error
+         * handler is skipped.
+         *
+         * Besides the async nature to await the completion behaves identically to {@link throws}.
+         *
+         * If specified, `error` can be a [`Class`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes),
+         * [`RegExp`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions), a validation function,
+         * an object where each property will be tested for, or an instance of error where
+         * each property will be tested for including the non-enumerable `message` and`name` properties.
+         *
+         * If specified, `message` will be the message provided by the `AssertionError` if the `asyncFn` fails to reject.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * await assert.rejects(
+         *   async () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   {
+         *     name: 'TypeError',
+         *     message: 'Wrong value'
+         *   }
+         * );
+         * ```
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * await assert.rejects(
+         *   async () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   (err) => {
+         *     assert.strictEqual(err.name, 'TypeError');
+         *     assert.strictEqual(err.message, 'Wrong value');
+         *     return true;
+         *   }
+         * );
+         * ```
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.rejects(
+         *   Promise.reject(new Error('Wrong value')),
+         *   Error
+         * ).then(() => {
+         *   // ...
+         * });
+         * ```
+         *
+         * `error` cannot be a string. If a string is provided as the second
+         * argument, then `error` is assumed to be omitted and the string will be used for`message` instead. This can lead to easy-to-miss mistakes. Please read the
+         * example in {@link throws} carefully if using a string as the second
+         * argument gets considered.
+         * @since v10.0.0
+         */
+        function rejects(block: (() => Promise<unknown>) | Promise<unknown>, message?: string | Error): Promise<void>;
+        function rejects(block: (() => Promise<unknown>) | Promise<unknown>, error: AssertPredicate, message?: string | Error): Promise<void>;
+        /**
+         * Awaits the `asyncFn` promise or, if `asyncFn` is a function, immediately
+         * calls the function and awaits the returned promise to complete. It will then
+         * check that the promise is not rejected.
+         *
+         * If `asyncFn` is a function and it throws an error synchronously,`assert.doesNotReject()` will return a rejected `Promise` with that error. If
+         * the function does not return a promise, `assert.doesNotReject()` will return a
+         * rejected `Promise` with an `ERR_INVALID_RETURN_VALUE` error. In both cases
+         * the error handler is skipped.
+         *
+         * Using `assert.doesNotReject()` is actually not useful because there is little
+         * benefit in catching a rejection and then rejecting it again. Instead, consider
+         * adding a comment next to the specific code path that should not reject and keep
+         * error messages as expressive as possible.
+         *
+         * If specified, `error` can be a [`Class`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Classes),
+         * [`RegExp`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Regular_Expressions) or a validation
+         * function. See {@link throws} for more details.
+         *
+         * Besides the async nature to await the completion behaves identically to {@link doesNotThrow}.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * await assert.doesNotReject(
+         *   async () => {
+         *     throw new TypeError('Wrong value');
+         *   },
+         *   SyntaxError
+         * );
+         * ```
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.doesNotReject(Promise.reject(new TypeError('Wrong value')))
+         *   .then(() => {
+         *     // ...
+         *   });
+         * ```
+         * @since v10.0.0
+         */
+        function doesNotReject(block: (() => Promise<unknown>) | Promise<unknown>, message?: string | Error): Promise<void>;
+        function doesNotReject(block: (() => Promise<unknown>) | Promise<unknown>, error: AssertPredicate, message?: string | Error): Promise<void>;
+        /**
+         * Expects the `string` input to match the regular expression.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.match('I will fail', /pass/);
+         * // AssertionError [ERR_ASSERTION]: The input did not match the regular ...
+         *
+         * assert.match(123, /pass/);
+         * // AssertionError [ERR_ASSERTION]: The "string" argument must be of type string.
+         *
+         * assert.match('I will pass', /pass/);
+         * // OK
+         * ```
+         *
+         * If the values do not match, or if the `string` argument is of another type than`string`, an `AssertionError` is thrown with a `message` property set equal
+         * to the value of the `message` parameter. If the `message` parameter is
+         * undefined, a default error message is assigned. If the `message` parameter is an
+         * instance of an `Error` then it will be thrown instead of the `AssertionError`.
+         * @since v13.6.0, v12.16.0
+         */
+        function match(value: string, regExp: RegExp, message?: string | Error): void;
+        /**
+         * Expects the `string` input not to match the regular expression.
+         *
+         * ```js
+         * import assert from 'assert/strict';
+         *
+         * assert.doesNotMatch('I will fail', /fail/);
+         * // AssertionError [ERR_ASSERTION]: The input was expected to not match the ...
+         *
+         * assert.doesNotMatch(123, /pass/);
+         * // AssertionError [ERR_ASSERTION]: The "string" argument must be of type string.
+         *
+         * assert.doesNotMatch('I will pass', /different/);
+         * // OK
+         * ```
+         *
+         * If the values do match, or if the `string` argument is of another type than`string`, an `AssertionError` is thrown with a `message` property set equal
+         * to the value of the `message` parameter. If the `message` parameter is
+         * undefined, a default error message is assigned. If the `message` parameter is an
+         * instance of an `Error` then it will be thrown instead of the `AssertionError`.
+         * @since v13.6.0, v12.16.0
+         */
+        function doesNotMatch(value: string, regExp: RegExp, message?: string | Error): void;
+        const strict: Omit<typeof assert, 'equal' | 'notEqual' | 'deepEqual' | 'notDeepEqual' | 'ok' | 'strictEqual' | 'deepStrictEqual' | 'ifError' | 'strict'> & {
+            (value: unknown, message?: string | Error): asserts value;
+            equal: typeof strictEqual;
+            notEqual: typeof notStrictEqual;
+            deepEqual: typeof deepStrictEqual;
+            notDeepEqual: typeof notDeepStrictEqual;
+            // Mapped types and assertion functions are incompatible?
+            // TS2775: Assertions require every name in the call target
+            // to be declared with an explicit type annotation.
+            ok: typeof ok;
+            strictEqual: typeof strictEqual;
+            deepStrictEqual: typeof deepStrictEqual;
+            ifError: typeof ifError;
+            strict: typeof strict;
+        };
+    }
+    export = assert;
+}
+declare module 'node:assert' {
+    import assert = require('assert');
+    export = assert;
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/assert/strict.d.ts b/igv_component/node_modules/@types/node/ts4.8/assert/strict.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b4319b974861f6cad84b745485af55264b13c3d8
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/assert/strict.d.ts
@@ -0,0 +1,8 @@
+declare module 'assert/strict' {
+    import { strict } from 'node:assert';
+    export = strict;
+}
+declare module 'node:assert/strict' {
+    import { strict } from 'node:assert';
+    export = strict;
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/async_hooks.d.ts b/igv_component/node_modules/@types/node/ts4.8/async_hooks.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..0bf4739650c5610432cdeb7d9d0ca0afac41575f
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/async_hooks.d.ts
@@ -0,0 +1,501 @@
+/**
+ * The `async_hooks` module provides an API to track asynchronous resources. It
+ * can be accessed using:
+ *
+ * ```js
+ * import async_hooks from 'async_hooks';
+ * ```
+ * @experimental
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/async_hooks.js)
+ */
+declare module 'async_hooks' {
+    /**
+     * ```js
+     * import { executionAsyncId } from 'async_hooks';
+     *
+     * console.log(executionAsyncId());  // 1 - bootstrap
+     * fs.open(path, 'r', (err, fd) => {
+     *   console.log(executionAsyncId());  // 6 - open()
+     * });
+     * ```
+     *
+     * The ID returned from `executionAsyncId()` is related to execution timing, not
+     * causality (which is covered by `triggerAsyncId()`):
+     *
+     * ```js
+     * const server = net.createServer((conn) => {
+     *   // Returns the ID of the server, not of the new connection, because the
+     *   // callback runs in the execution scope of the server's MakeCallback().
+     *   async_hooks.executionAsyncId();
+     *
+     * }).listen(port, () => {
+     *   // Returns the ID of a TickObject (process.nextTick()) because all
+     *   // callbacks passed to .listen() are wrapped in a nextTick().
+     *   async_hooks.executionAsyncId();
+     * });
+     * ```
+     *
+     * Promise contexts may not get precise `executionAsyncIds` by default.
+     * See the section on `promise execution tracking`.
+     * @since v8.1.0
+     * @return The `asyncId` of the current execution context. Useful to track when something calls.
+     */
+    function executionAsyncId(): number;
+    /**
+     * Resource objects returned by `executionAsyncResource()` are most often internal
+     * Node.js handle objects with undocumented APIs. Using any functions or properties
+     * on the object is likely to crash your application and should be avoided.
+     *
+     * Using `executionAsyncResource()` in the top-level execution context will
+     * return an empty object as there is no handle or request object to use,
+     * but having an object representing the top-level can be helpful.
+     *
+     * ```js
+     * import { open } from 'fs';
+     * import { executionAsyncId, executionAsyncResource } from 'async_hooks';
+     *
+     * console.log(executionAsyncId(), executionAsyncResource());  // 1 {}
+     * open(new URL(import.meta.url), 'r', (err, fd) => {
+     *   console.log(executionAsyncId(), executionAsyncResource());  // 7 FSReqWrap
+     * });
+     * ```
+     *
+     * This can be used to implement continuation local storage without the
+     * use of a tracking `Map` to store the metadata:
+     *
+     * ```js
+     * import { createServer } from 'http';
+     * import {
+     *   executionAsyncId,
+     *   executionAsyncResource,
+     *   createHook
+     * } from 'async_hooks';
+     * const sym = Symbol('state'); // Private symbol to avoid pollution
+     *
+     * createHook({
+     *   init(asyncId, type, triggerAsyncId, resource) {
+     *     const cr = executionAsyncResource();
+     *     if (cr) {
+     *       resource[sym] = cr[sym];
+     *     }
+     *   }
+     * }).enable();
+     *
+     * const server = createServer((req, res) => {
+     *   executionAsyncResource()[sym] = { state: req.url };
+     *   setTimeout(function() {
+     *     res.end(JSON.stringify(executionAsyncResource()[sym]));
+     *   }, 100);
+     * }).listen(3000);
+     * ```
+     * @since v13.9.0, v12.17.0
+     * @return The resource representing the current execution. Useful to store data within the resource.
+     */
+    function executionAsyncResource(): object;
+    /**
+     * ```js
+     * const server = net.createServer((conn) => {
+     *   // The resource that caused (or triggered) this callback to be called
+     *   // was that of the new connection. Thus the return value of triggerAsyncId()
+     *   // is the asyncId of "conn".
+     *   async_hooks.triggerAsyncId();
+     *
+     * }).listen(port, () => {
+     *   // Even though all callbacks passed to .listen() are wrapped in a nextTick()
+     *   // the callback itself exists because the call to the server's .listen()
+     *   // was made. So the return value would be the ID of the server.
+     *   async_hooks.triggerAsyncId();
+     * });
+     * ```
+     *
+     * Promise contexts may not get valid `triggerAsyncId`s by default. See
+     * the section on `promise execution tracking`.
+     * @return The ID of the resource responsible for calling the callback that is currently being executed.
+     */
+    function triggerAsyncId(): number;
+    interface HookCallbacks {
+        /**
+         * Called when a class is constructed that has the possibility to emit an asynchronous event.
+         * @param asyncId a unique ID for the async resource
+         * @param type the type of the async resource
+         * @param triggerAsyncId the unique ID of the async resource in whose execution context this async resource was created
+         * @param resource reference to the resource representing the async operation, needs to be released during destroy
+         */
+        init?(asyncId: number, type: string, triggerAsyncId: number, resource: object): void;
+        /**
+         * When an asynchronous operation is initiated or completes a callback is called to notify the user.
+         * The before callback is called just before said callback is executed.
+         * @param asyncId the unique identifier assigned to the resource about to execute the callback.
+         */
+        before?(asyncId: number): void;
+        /**
+         * Called immediately after the callback specified in before is completed.
+         * @param asyncId the unique identifier assigned to the resource which has executed the callback.
+         */
+        after?(asyncId: number): void;
+        /**
+         * Called when a promise has resolve() called. This may not be in the same execution id
+         * as the promise itself.
+         * @param asyncId the unique id for the promise that was resolve()d.
+         */
+        promiseResolve?(asyncId: number): void;
+        /**
+         * Called after the resource corresponding to asyncId is destroyed
+         * @param asyncId a unique ID for the async resource
+         */
+        destroy?(asyncId: number): void;
+    }
+    interface AsyncHook {
+        /**
+         * Enable the callbacks for a given AsyncHook instance. If no callbacks are provided enabling is a noop.
+         */
+        enable(): this;
+        /**
+         * Disable the callbacks for a given AsyncHook instance from the global pool of AsyncHook callbacks to be executed. Once a hook has been disabled it will not be called again until enabled.
+         */
+        disable(): this;
+    }
+    /**
+     * Registers functions to be called for different lifetime events of each async
+     * operation.
+     *
+     * The callbacks `init()`/`before()`/`after()`/`destroy()` are called for the
+     * respective asynchronous event during a resource's lifetime.
+     *
+     * All callbacks are optional. For example, if only resource cleanup needs to
+     * be tracked, then only the `destroy` callback needs to be passed. The
+     * specifics of all functions that can be passed to `callbacks` is in the `Hook Callbacks` section.
+     *
+     * ```js
+     * import { createHook } from 'async_hooks';
+     *
+     * const asyncHook = createHook({
+     *   init(asyncId, type, triggerAsyncId, resource) { },
+     *   destroy(asyncId) { }
+     * });
+     * ```
+     *
+     * The callbacks will be inherited via the prototype chain:
+     *
+     * ```js
+     * class MyAsyncCallbacks {
+     *   init(asyncId, type, triggerAsyncId, resource) { }
+     *   destroy(asyncId) {}
+     * }
+     *
+     * class MyAddedCallbacks extends MyAsyncCallbacks {
+     *   before(asyncId) { }
+     *   after(asyncId) { }
+     * }
+     *
+     * const asyncHook = async_hooks.createHook(new MyAddedCallbacks());
+     * ```
+     *
+     * Because promises are asynchronous resources whose lifecycle is tracked
+     * via the async hooks mechanism, the `init()`, `before()`, `after()`, and`destroy()` callbacks _must not_ be async functions that return promises.
+     * @since v8.1.0
+     * @param callbacks The `Hook Callbacks` to register
+     * @return Instance used for disabling and enabling hooks
+     */
+    function createHook(callbacks: HookCallbacks): AsyncHook;
+    interface AsyncResourceOptions {
+        /**
+         * The ID of the execution context that created this async event.
+         * @default executionAsyncId()
+         */
+        triggerAsyncId?: number | undefined;
+        /**
+         * Disables automatic `emitDestroy` when the object is garbage collected.
+         * This usually does not need to be set (even if `emitDestroy` is called
+         * manually), unless the resource's `asyncId` is retrieved and the
+         * sensitive API's `emitDestroy` is called with it.
+         * @default false
+         */
+        requireManualDestroy?: boolean | undefined;
+    }
+    /**
+     * The class `AsyncResource` is designed to be extended by the embedder's async
+     * resources. Using this, users can easily trigger the lifetime events of their
+     * own resources.
+     *
+     * The `init` hook will trigger when an `AsyncResource` is instantiated.
+     *
+     * The following is an overview of the `AsyncResource` API.
+     *
+     * ```js
+     * import { AsyncResource, executionAsyncId } from 'async_hooks';
+     *
+     * // AsyncResource() is meant to be extended. Instantiating a
+     * // new AsyncResource() also triggers init. If triggerAsyncId is omitted then
+     * // async_hook.executionAsyncId() is used.
+     * const asyncResource = new AsyncResource(
+     *   type, { triggerAsyncId: executionAsyncId(), requireManualDestroy: false }
+     * );
+     *
+     * // Run a function in the execution context of the resource. This will
+     * // * establish the context of the resource
+     * // * trigger the AsyncHooks before callbacks
+     * // * call the provided function `fn` with the supplied arguments
+     * // * trigger the AsyncHooks after callbacks
+     * // * restore the original execution context
+     * asyncResource.runInAsyncScope(fn, thisArg, ...args);
+     *
+     * // Call AsyncHooks destroy callbacks.
+     * asyncResource.emitDestroy();
+     *
+     * // Return the unique ID assigned to the AsyncResource instance.
+     * asyncResource.asyncId();
+     *
+     * // Return the trigger ID for the AsyncResource instance.
+     * asyncResource.triggerAsyncId();
+     * ```
+     */
+    class AsyncResource {
+        /**
+         * AsyncResource() is meant to be extended. Instantiating a
+         * new AsyncResource() also triggers init. If triggerAsyncId is omitted then
+         * async_hook.executionAsyncId() is used.
+         * @param type The type of async event.
+         * @param triggerAsyncId The ID of the execution context that created
+         *   this async event (default: `executionAsyncId()`), or an
+         *   AsyncResourceOptions object (since v9.3.0)
+         */
+        constructor(type: string, triggerAsyncId?: number | AsyncResourceOptions);
+        /**
+         * Binds the given function to the current execution context.
+         *
+         * The returned function will have an `asyncResource` property referencing
+         * the `AsyncResource` to which the function is bound.
+         * @since v14.8.0, v12.19.0
+         * @param fn The function to bind to the current execution context.
+         * @param type An optional name to associate with the underlying `AsyncResource`.
+         */
+        static bind<Func extends (this: ThisArg, ...args: any[]) => any, ThisArg>(
+            fn: Func,
+            type?: string,
+            thisArg?: ThisArg
+        ): Func & {
+            asyncResource: AsyncResource;
+        };
+        /**
+         * Binds the given function to execute to this `AsyncResource`'s scope.
+         *
+         * The returned function will have an `asyncResource` property referencing
+         * the `AsyncResource` to which the function is bound.
+         * @since v14.8.0, v12.19.0
+         * @param fn The function to bind to the current `AsyncResource`.
+         */
+        bind<Func extends (...args: any[]) => any>(
+            fn: Func
+        ): Func & {
+            asyncResource: AsyncResource;
+        };
+        /**
+         * Call the provided function with the provided arguments in the execution context
+         * of the async resource. This will establish the context, trigger the AsyncHooks
+         * before callbacks, call the function, trigger the AsyncHooks after callbacks, and
+         * then restore the original execution context.
+         * @since v9.6.0
+         * @param fn The function to call in the execution context of this async resource.
+         * @param thisArg The receiver to be used for the function call.
+         * @param args Optional arguments to pass to the function.
+         */
+        runInAsyncScope<This, Result>(fn: (this: This, ...args: any[]) => Result, thisArg?: This, ...args: any[]): Result;
+        /**
+         * Call all `destroy` hooks. This should only ever be called once. An error will
+         * be thrown if it is called more than once. This **must** be manually called. If
+         * the resource is left to be collected by the GC then the `destroy` hooks will
+         * never be called.
+         * @return A reference to `asyncResource`.
+         */
+        emitDestroy(): this;
+        /**
+         * @return The unique `asyncId` assigned to the resource.
+         */
+        asyncId(): number;
+        /**
+         *
+         * @return The same `triggerAsyncId` that is passed to the `AsyncResource` constructor.
+         */
+        triggerAsyncId(): number;
+    }
+    /**
+     * This class creates stores that stay coherent through asynchronous operations.
+     *
+     * While you can create your own implementation on top of the `async_hooks` module,`AsyncLocalStorage` should be preferred as it is a performant and memory safe
+     * implementation that involves significant optimizations that are non-obvious to
+     * implement.
+     *
+     * The following example uses `AsyncLocalStorage` to build a simple logger
+     * that assigns IDs to incoming HTTP requests and includes them in messages
+     * logged within each request.
+     *
+     * ```js
+     * import http from 'http';
+     * import { AsyncLocalStorage } from 'async_hooks';
+     *
+     * const asyncLocalStorage = new AsyncLocalStorage();
+     *
+     * function logWithId(msg) {
+     *   const id = asyncLocalStorage.getStore();
+     *   console.log(`${id !== undefined ? id : '-'}:`, msg);
+     * }
+     *
+     * let idSeq = 0;
+     * http.createServer((req, res) => {
+     *   asyncLocalStorage.run(idSeq++, () => {
+     *     logWithId('start');
+     *     // Imagine any chain of async operations here
+     *     setImmediate(() => {
+     *       logWithId('finish');
+     *       res.end();
+     *     });
+     *   });
+     * }).listen(8080);
+     *
+     * http.get('http://localhost:8080');
+     * http.get('http://localhost:8080');
+     * // Prints:
+     * //   0: start
+     * //   1: start
+     * //   0: finish
+     * //   1: finish
+     * ```
+     *
+     * Each instance of `AsyncLocalStorage` maintains an independent storage context.
+     * Multiple instances can safely exist simultaneously without risk of interfering
+     * with each other's data.
+     * @since v13.10.0, v12.17.0
+     */
+    class AsyncLocalStorage<T> {
+        /**
+         * Disables the instance of `AsyncLocalStorage`. All subsequent calls
+         * to `asyncLocalStorage.getStore()` will return `undefined` until`asyncLocalStorage.run()` or `asyncLocalStorage.enterWith()` is called again.
+         *
+         * When calling `asyncLocalStorage.disable()`, all current contexts linked to the
+         * instance will be exited.
+         *
+         * Calling `asyncLocalStorage.disable()` is required before the`asyncLocalStorage` can be garbage collected. This does not apply to stores
+         * provided by the `asyncLocalStorage`, as those objects are garbage collected
+         * along with the corresponding async resources.
+         *
+         * Use this method when the `asyncLocalStorage` is not in use anymore
+         * in the current process.
+         * @since v13.10.0, v12.17.0
+         * @experimental
+         */
+        disable(): void;
+        /**
+         * Returns the current store.
+         * If called outside of an asynchronous context initialized by
+         * calling `asyncLocalStorage.run()` or `asyncLocalStorage.enterWith()`, it
+         * returns `undefined`.
+         * @since v13.10.0, v12.17.0
+         */
+        getStore(): T | undefined;
+        /**
+         * Runs a function synchronously within a context and returns its
+         * return value. The store is not accessible outside of the callback function.
+         * The store is accessible to any asynchronous operations created within the
+         * callback.
+         *
+         * The optional `args` are passed to the callback function.
+         *
+         * If the callback function throws an error, the error is thrown by `run()` too.
+         * The stacktrace is not impacted by this call and the context is exited.
+         *
+         * Example:
+         *
+         * ```js
+         * const store = { id: 2 };
+         * try {
+         *   asyncLocalStorage.run(store, () => {
+         *     asyncLocalStorage.getStore(); // Returns the store object
+         *     setTimeout(() => {
+         *       asyncLocalStorage.getStore(); // Returns the store object
+         *     }, 200);
+         *     throw new Error();
+         *   });
+         * } catch (e) {
+         *   asyncLocalStorage.getStore(); // Returns undefined
+         *   // The error will be caught here
+         * }
+         * ```
+         * @since v13.10.0, v12.17.0
+         */
+        run<R, TArgs extends any[]>(store: T, callback: (...args: TArgs) => R, ...args: TArgs): R;
+        /**
+         * Runs a function synchronously outside of a context and returns its
+         * return value. The store is not accessible within the callback function or
+         * the asynchronous operations created within the callback. Any `getStore()`call done within the callback function will always return `undefined`.
+         *
+         * The optional `args` are passed to the callback function.
+         *
+         * If the callback function throws an error, the error is thrown by `exit()` too.
+         * The stacktrace is not impacted by this call and the context is re-entered.
+         *
+         * Example:
+         *
+         * ```js
+         * // Within a call to run
+         * try {
+         *   asyncLocalStorage.getStore(); // Returns the store object or value
+         *   asyncLocalStorage.exit(() => {
+         *     asyncLocalStorage.getStore(); // Returns undefined
+         *     throw new Error();
+         *   });
+         * } catch (e) {
+         *   asyncLocalStorage.getStore(); // Returns the same object or value
+         *   // The error will be caught here
+         * }
+         * ```
+         * @since v13.10.0, v12.17.0
+         * @experimental
+         */
+        exit<R, TArgs extends any[]>(callback: (...args: TArgs) => R, ...args: TArgs): R;
+        /**
+         * Transitions into the context for the remainder of the current
+         * synchronous execution and then persists the store through any following
+         * asynchronous calls.
+         *
+         * Example:
+         *
+         * ```js
+         * const store = { id: 1 };
+         * // Replaces previous store with the given store object
+         * asyncLocalStorage.enterWith(store);
+         * asyncLocalStorage.getStore(); // Returns the store object
+         * someAsyncOperation(() => {
+         *   asyncLocalStorage.getStore(); // Returns the same object
+         * });
+         * ```
+         *
+         * This transition will continue for the _entire_ synchronous execution.
+         * This means that if, for example, the context is entered within an event
+         * handler subsequent event handlers will also run within that context unless
+         * specifically bound to another context with an `AsyncResource`. That is why`run()` should be preferred over `enterWith()` unless there are strong reasons
+         * to use the latter method.
+         *
+         * ```js
+         * const store = { id: 1 };
+         *
+         * emitter.on('my-event', () => {
+         *   asyncLocalStorage.enterWith(store);
+         * });
+         * emitter.on('my-event', () => {
+         *   asyncLocalStorage.getStore(); // Returns the same object
+         * });
+         *
+         * asyncLocalStorage.getStore(); // Returns undefined
+         * emitter.emit('my-event');
+         * asyncLocalStorage.getStore(); // Returns the same object
+         * ```
+         * @since v13.11.0, v12.17.0
+         * @experimental
+         */
+        enterWith(store: T): void;
+    }
+}
+declare module 'node:async_hooks' {
+    export * from 'async_hooks';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/buffer.d.ts b/igv_component/node_modules/@types/node/ts4.8/buffer.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..13ab33546cd318c02deab2d1e24a4c358cf67ecf
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/buffer.d.ts
@@ -0,0 +1,2238 @@
+/**
+ * `Buffer` objects are used to represent a fixed-length sequence of bytes. Many
+ * Node.js APIs support `Buffer`s.
+ *
+ * The `Buffer` class is a subclass of JavaScript's [`Uint8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array) class and
+ * extends it with methods that cover additional use cases. Node.js APIs accept
+ * plain [`Uint8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array) s wherever `Buffer`s are supported as well.
+ *
+ * While the `Buffer` class is available within the global scope, it is still
+ * recommended to explicitly reference it via an import or require statement.
+ *
+ * ```js
+ * import { Buffer } from 'buffer';
+ *
+ * // Creates a zero-filled Buffer of length 10.
+ * const buf1 = Buffer.alloc(10);
+ *
+ * // Creates a Buffer of length 10,
+ * // filled with bytes which all have the value `1`.
+ * const buf2 = Buffer.alloc(10, 1);
+ *
+ * // Creates an uninitialized buffer of length 10.
+ * // This is faster than calling Buffer.alloc() but the returned
+ * // Buffer instance might contain old data that needs to be
+ * // overwritten using fill(), write(), or other functions that fill the Buffer's
+ * // contents.
+ * const buf3 = Buffer.allocUnsafe(10);
+ *
+ * // Creates a Buffer containing the bytes [1, 2, 3].
+ * const buf4 = Buffer.from([1, 2, 3]);
+ *
+ * // Creates a Buffer containing the bytes [1, 1, 1, 1] – the entries
+ * // are all truncated using `(value &#x26; 255)` to fit into the range 0–255.
+ * const buf5 = Buffer.from([257, 257.5, -255, '1']);
+ *
+ * // Creates a Buffer containing the UTF-8-encoded bytes for the string 'tést':
+ * // [0x74, 0xc3, 0xa9, 0x73, 0x74] (in hexadecimal notation)
+ * // [116, 195, 169, 115, 116] (in decimal notation)
+ * const buf6 = Buffer.from('tést');
+ *
+ * // Creates a Buffer containing the Latin-1 bytes [0x74, 0xe9, 0x73, 0x74].
+ * const buf7 = Buffer.from('tést', 'latin1');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/buffer.js)
+ */
+declare module 'buffer' {
+    import { BinaryLike } from 'node:crypto';
+    export const INSPECT_MAX_BYTES: number;
+    export const kMaxLength: number;
+    export const kStringMaxLength: number;
+    export const constants: {
+        MAX_LENGTH: number;
+        MAX_STRING_LENGTH: number;
+    };
+    export type TranscodeEncoding = 'ascii' | 'utf8' | 'utf16le' | 'ucs2' | 'latin1' | 'binary';
+    /**
+     * Re-encodes the given `Buffer` or `Uint8Array` instance from one character
+     * encoding to another. Returns a new `Buffer` instance.
+     *
+     * Throws if the `fromEnc` or `toEnc` specify invalid character encodings or if
+     * conversion from `fromEnc` to `toEnc` is not permitted.
+     *
+     * Encodings supported by `buffer.transcode()` are: `'ascii'`, `'utf8'`,`'utf16le'`, `'ucs2'`, `'latin1'`, and `'binary'`.
+     *
+     * The transcoding process will use substitution characters if a given byte
+     * sequence cannot be adequately represented in the target encoding. For instance:
+     *
+     * ```js
+     * import { Buffer, transcode } from 'buffer';
+     *
+     * const newBuf = transcode(Buffer.from('€'), 'utf8', 'ascii');
+     * console.log(newBuf.toString('ascii'));
+     * // Prints: '?'
+     * ```
+     *
+     * Because the Euro (`€`) sign is not representable in US-ASCII, it is replaced
+     * with `?` in the transcoded `Buffer`.
+     * @since v7.1.0
+     * @param source A `Buffer` or `Uint8Array` instance.
+     * @param fromEnc The current encoding.
+     * @param toEnc To target encoding.
+     */
+    export function transcode(source: Uint8Array, fromEnc: TranscodeEncoding, toEnc: TranscodeEncoding): Buffer;
+    export const SlowBuffer: {
+        /** @deprecated since v6.0.0, use `Buffer.allocUnsafeSlow()` */
+        new (size: number): Buffer;
+        prototype: Buffer;
+    };
+    /**
+     * Resolves a `'blob:nodedata:...'` an associated `Blob` object registered using
+     * a prior call to `URL.createObjectURL()`.
+     * @since v16.7.0
+     * @experimental
+     * @param id A `'blob:nodedata:...` URL string returned by a prior call to `URL.createObjectURL()`.
+     */
+    export function resolveObjectURL(id: string): Blob | undefined;
+    export { Buffer };
+    /**
+     * @experimental
+     */
+    export interface BlobOptions {
+        /**
+         * @default 'utf8'
+         */
+        encoding?: BufferEncoding | undefined;
+        /**
+         * The Blob content-type. The intent is for `type` to convey
+         * the MIME media type of the data, however no validation of the type format
+         * is performed.
+         */
+        type?: string | undefined;
+    }
+    /**
+     * A [`Blob`](https://developer.mozilla.org/en-US/docs/Web/API/Blob) encapsulates immutable, raw data that can be safely shared across
+     * multiple worker threads.
+     * @since v15.7.0, v14.18.0
+     */
+    export class Blob {
+        /**
+         * The total size of the `Blob` in bytes.
+         * @since v15.7.0, v14.18.0
+         */
+        readonly size: number;
+        /**
+         * The content-type of the `Blob`.
+         * @since v15.7.0, v14.18.0
+         */
+        readonly type: string;
+        /**
+         * Creates a new `Blob` object containing a concatenation of the given sources.
+         *
+         * {ArrayBuffer}, {TypedArray}, {DataView}, and {Buffer} sources are copied into
+         * the 'Blob' and can therefore be safely modified after the 'Blob' is created.
+         *
+         * String sources are also copied into the `Blob`.
+         */
+        constructor(sources: Array<BinaryLike | Blob>, options?: BlobOptions);
+        /**
+         * Returns a promise that fulfills with an [ArrayBuffer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) containing a copy of
+         * the `Blob` data.
+         * @since v15.7.0, v14.18.0
+         */
+        arrayBuffer(): Promise<ArrayBuffer>;
+        /**
+         * Creates and returns a new `Blob` containing a subset of this `Blob` objects
+         * data. The original `Blob` is not altered.
+         * @since v15.7.0, v14.18.0
+         * @param start The starting index.
+         * @param end The ending index.
+         * @param type The content-type for the new `Blob`
+         */
+        slice(start?: number, end?: number, type?: string): Blob;
+        /**
+         * Returns a promise that fulfills with the contents of the `Blob` decoded as a
+         * UTF-8 string.
+         * @since v15.7.0, v14.18.0
+         */
+        text(): Promise<string>;
+        /**
+         * Returns a new `ReadableStream` that allows the content of the `Blob` to be read.
+         * @since v16.7.0
+         */
+        stream(): unknown; // pending web streams types
+    }
+    export import atob = globalThis.atob;
+    export import btoa = globalThis.btoa;
+    global {
+        // Buffer class
+        type BufferEncoding = 'ascii' | 'utf8' | 'utf-8' | 'utf16le' | 'ucs2' | 'ucs-2' | 'base64' | 'base64url' | 'latin1' | 'binary' | 'hex';
+        type WithImplicitCoercion<T> =
+            | T
+            | {
+                  valueOf(): T;
+              };
+        /**
+         * Raw data is stored in instances of the Buffer class.
+         * A Buffer is similar to an array of integers but corresponds to a raw memory allocation outside the V8 heap.  A Buffer cannot be resized.
+         * Valid string encodings: 'ascii'|'utf8'|'utf16le'|'ucs2'(alias of 'utf16le')|'base64'|'base64url'|'binary'(deprecated)|'hex'
+         */
+        interface BufferConstructor {
+            /**
+             * Allocates a new buffer containing the given {str}.
+             *
+             * @param str String to store in buffer.
+             * @param encoding encoding to use, optional.  Default is 'utf8'
+             * @deprecated since v10.0.0 - Use `Buffer.from(string[, encoding])` instead.
+             */
+            new (str: string, encoding?: BufferEncoding): Buffer;
+            /**
+             * Allocates a new buffer of {size} octets.
+             *
+             * @param size count of octets to allocate.
+             * @deprecated since v10.0.0 - Use `Buffer.alloc()` instead (also see `Buffer.allocUnsafe()`).
+             */
+            new (size: number): Buffer;
+            /**
+             * Allocates a new buffer containing the given {array} of octets.
+             *
+             * @param array The octets to store.
+             * @deprecated since v10.0.0 - Use `Buffer.from(array)` instead.
+             */
+            new (array: Uint8Array): Buffer;
+            /**
+             * Produces a Buffer backed by the same allocated memory as
+             * the given {ArrayBuffer}/{SharedArrayBuffer}.
+             *
+             *
+             * @param arrayBuffer The ArrayBuffer with which to share memory.
+             * @deprecated since v10.0.0 - Use `Buffer.from(arrayBuffer[, byteOffset[, length]])` instead.
+             */
+            new (arrayBuffer: ArrayBuffer | SharedArrayBuffer): Buffer;
+            /**
+             * Allocates a new buffer containing the given {array} of octets.
+             *
+             * @param array The octets to store.
+             * @deprecated since v10.0.0 - Use `Buffer.from(array)` instead.
+             */
+            new (array: ReadonlyArray<any>): Buffer;
+            /**
+             * Copies the passed {buffer} data onto a new {Buffer} instance.
+             *
+             * @param buffer The buffer to copy.
+             * @deprecated since v10.0.0 - Use `Buffer.from(buffer)` instead.
+             */
+            new (buffer: Buffer): Buffer;
+            /**
+             * Allocates a new `Buffer` using an `array` of bytes in the range `0` – `255`.
+             * Array entries outside that range will be truncated to fit into it.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Creates a new Buffer containing the UTF-8 bytes of the string 'buffer'.
+             * const buf = Buffer.from([0x62, 0x75, 0x66, 0x66, 0x65, 0x72]);
+             * ```
+             *
+             * A `TypeError` will be thrown if `array` is not an `Array` or another type
+             * appropriate for `Buffer.from()` variants.
+             *
+             * `Buffer.from(array)` and `Buffer.from(string)` may also use the internal`Buffer` pool like `Buffer.allocUnsafe()` does.
+             * @since v5.10.0
+             */
+            from(arrayBuffer: WithImplicitCoercion<ArrayBuffer | SharedArrayBuffer>, byteOffset?: number, length?: number): Buffer;
+            /**
+             * Creates a new Buffer using the passed {data}
+             * @param data data to create a new Buffer
+             */
+            from(data: Uint8Array | ReadonlyArray<number>): Buffer;
+            from(data: WithImplicitCoercion<Uint8Array | ReadonlyArray<number> | string>): Buffer;
+            /**
+             * Creates a new Buffer containing the given JavaScript string {str}.
+             * If provided, the {encoding} parameter identifies the character encoding.
+             * If not provided, {encoding} defaults to 'utf8'.
+             */
+            from(
+                str:
+                    | WithImplicitCoercion<string>
+                    | {
+                          [Symbol.toPrimitive](hint: 'string'): string;
+                      },
+                encoding?: BufferEncoding
+            ): Buffer;
+            /**
+             * Creates a new Buffer using the passed {data}
+             * @param values to create a new Buffer
+             */
+            of(...items: number[]): Buffer;
+            /**
+             * Returns `true` if `obj` is a `Buffer`, `false` otherwise.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * Buffer.isBuffer(Buffer.alloc(10)); // true
+             * Buffer.isBuffer(Buffer.from('foo')); // true
+             * Buffer.isBuffer('a string'); // false
+             * Buffer.isBuffer([]); // false
+             * Buffer.isBuffer(new Uint8Array(1024)); // false
+             * ```
+             * @since v0.1.101
+             */
+            isBuffer(obj: any): obj is Buffer;
+            /**
+             * Returns `true` if `encoding` is the name of a supported character encoding,
+             * or `false` otherwise.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * console.log(Buffer.isEncoding('utf8'));
+             * // Prints: true
+             *
+             * console.log(Buffer.isEncoding('hex'));
+             * // Prints: true
+             *
+             * console.log(Buffer.isEncoding('utf/8'));
+             * // Prints: false
+             *
+             * console.log(Buffer.isEncoding(''));
+             * // Prints: false
+             * ```
+             * @since v0.9.1
+             * @param encoding A character encoding name to check.
+             */
+            isEncoding(encoding: string): encoding is BufferEncoding;
+            /**
+             * Returns the byte length of a string when encoded using `encoding`.
+             * This is not the same as [`String.prototype.length`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/length), which does not account
+             * for the encoding that is used to convert the string into bytes.
+             *
+             * For `'base64'`, `'base64url'`, and `'hex'`, this function assumes valid input.
+             * For strings that contain non-base64/hex-encoded data (e.g. whitespace), the
+             * return value might be greater than the length of a `Buffer` created from the
+             * string.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const str = '\u00bd + \u00bc = \u00be';
+             *
+             * console.log(`${str}: ${str.length} characters, ` +
+             *             `${Buffer.byteLength(str, 'utf8')} bytes`);
+             * // Prints: ½ + ¼ = ¾: 9 characters, 12 bytes
+             * ```
+             *
+             * When `string` is a
+             * `Buffer`/[`DataView`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView)/[`TypedArray`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/-
+             * Reference/Global_Objects/TypedArray)/[`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer)/[`SharedArrayBuffer`](https://develop-
+             * er.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer), the byte length as reported by `.byteLength`is returned.
+             * @since v0.1.90
+             * @param string A value to calculate the length of.
+             * @param [encoding='utf8'] If `string` is a string, this is its encoding.
+             * @return The number of bytes contained within `string`.
+             */
+            byteLength(string: string | NodeJS.ArrayBufferView | ArrayBuffer | SharedArrayBuffer, encoding?: BufferEncoding): number;
+            /**
+             * Returns a new `Buffer` which is the result of concatenating all the `Buffer`instances in the `list` together.
+             *
+             * If the list has no items, or if the `totalLength` is 0, then a new zero-length`Buffer` is returned.
+             *
+             * If `totalLength` is not provided, it is calculated from the `Buffer` instances
+             * in `list` by adding their lengths.
+             *
+             * If `totalLength` is provided, it is coerced to an unsigned integer. If the
+             * combined length of the `Buffer`s in `list` exceeds `totalLength`, the result is
+             * truncated to `totalLength`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Create a single `Buffer` from a list of three `Buffer` instances.
+             *
+             * const buf1 = Buffer.alloc(10);
+             * const buf2 = Buffer.alloc(14);
+             * const buf3 = Buffer.alloc(18);
+             * const totalLength = buf1.length + buf2.length + buf3.length;
+             *
+             * console.log(totalLength);
+             * // Prints: 42
+             *
+             * const bufA = Buffer.concat([buf1, buf2, buf3], totalLength);
+             *
+             * console.log(bufA);
+             * // Prints: <Buffer 00 00 00 00 ...>
+             * console.log(bufA.length);
+             * // Prints: 42
+             * ```
+             *
+             * `Buffer.concat()` may also use the internal `Buffer` pool like `Buffer.allocUnsafe()` does.
+             * @since v0.7.11
+             * @param list List of `Buffer` or {@link Uint8Array} instances to concatenate.
+             * @param totalLength Total length of the `Buffer` instances in `list` when concatenated.
+             */
+            concat(list: ReadonlyArray<Uint8Array>, totalLength?: number): Buffer;
+            /**
+             * Compares `buf1` to `buf2`, typically for the purpose of sorting arrays of`Buffer` instances. This is equivalent to calling `buf1.compare(buf2)`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf1 = Buffer.from('1234');
+             * const buf2 = Buffer.from('0123');
+             * const arr = [buf1, buf2];
+             *
+             * console.log(arr.sort(Buffer.compare));
+             * // Prints: [ <Buffer 30 31 32 33>, <Buffer 31 32 33 34> ]
+             * // (This result is equal to: [buf2, buf1].)
+             * ```
+             * @since v0.11.13
+             * @return Either `-1`, `0`, or `1`, depending on the result of the comparison. See `compare` for details.
+             */
+            compare(buf1: Uint8Array, buf2: Uint8Array): -1 | 0 | 1;
+            /**
+             * Allocates a new `Buffer` of `size` bytes. If `fill` is `undefined`, the`Buffer` will be zero-filled.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.alloc(5);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 00 00 00 00 00>
+             * ```
+             *
+             * If `size` is larger than {@link constants.MAX_LENGTH} or smaller than 0, `ERR_INVALID_ARG_VALUE` is thrown.
+             *
+             * If `fill` is specified, the allocated `Buffer` will be initialized by calling `buf.fill(fill)`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.alloc(5, 'a');
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 61 61 61 61 61>
+             * ```
+             *
+             * If both `fill` and `encoding` are specified, the allocated `Buffer` will be
+             * initialized by calling `buf.fill(fill, encoding)`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.alloc(11, 'aGVsbG8gd29ybGQ=', 'base64');
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 68 65 6c 6c 6f 20 77 6f 72 6c 64>
+             * ```
+             *
+             * Calling `Buffer.alloc()` can be measurably slower than the alternative `Buffer.allocUnsafe()` but ensures that the newly created `Buffer` instance
+             * contents will never contain sensitive data from previous allocations, including
+             * data that might not have been allocated for `Buffer`s.
+             *
+             * A `TypeError` will be thrown if `size` is not a number.
+             * @since v5.10.0
+             * @param size The desired length of the new `Buffer`.
+             * @param [fill=0] A value to pre-fill the new `Buffer` with.
+             * @param [encoding='utf8'] If `fill` is a string, this is its encoding.
+             */
+            alloc(size: number, fill?: string | Buffer | number, encoding?: BufferEncoding): Buffer;
+            /**
+             * Allocates a new `Buffer` of `size` bytes. If `size` is larger than {@link constants.MAX_LENGTH} or smaller than 0, `ERR_INVALID_ARG_VALUE` is thrown.
+             *
+             * The underlying memory for `Buffer` instances created in this way is _not_
+             * _initialized_. The contents of the newly created `Buffer` are unknown and _may contain sensitive data_. Use `Buffer.alloc()` instead to initialize`Buffer` instances with zeroes.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(10);
+             *
+             * console.log(buf);
+             * // Prints (contents may vary): <Buffer a0 8b 28 3f 01 00 00 00 50 32>
+             *
+             * buf.fill(0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 00 00 00 00 00 00 00 00 00 00>
+             * ```
+             *
+             * A `TypeError` will be thrown if `size` is not a number.
+             *
+             * The `Buffer` module pre-allocates an internal `Buffer` instance of
+             * size `Buffer.poolSize` that is used as a pool for the fast allocation of new`Buffer` instances created using `Buffer.allocUnsafe()`,`Buffer.from(array)`, `Buffer.concat()`, and the
+             * deprecated`new Buffer(size)` constructor only when `size` is less than or equal
+             * to `Buffer.poolSize >> 1` (floor of `Buffer.poolSize` divided by two).
+             *
+             * Use of this pre-allocated internal memory pool is a key difference between
+             * calling `Buffer.alloc(size, fill)` vs. `Buffer.allocUnsafe(size).fill(fill)`.
+             * Specifically, `Buffer.alloc(size, fill)` will _never_ use the internal `Buffer`pool, while `Buffer.allocUnsafe(size).fill(fill)`_will_ use the internal`Buffer` pool if `size` is less
+             * than or equal to half `Buffer.poolSize`. The
+             * difference is subtle but can be important when an application requires the
+             * additional performance that `Buffer.allocUnsafe()` provides.
+             * @since v5.10.0
+             * @param size The desired length of the new `Buffer`.
+             */
+            allocUnsafe(size: number): Buffer;
+            /**
+             * Allocates a new `Buffer` of `size` bytes. If `size` is larger than {@link constants.MAX_LENGTH} or smaller than 0, `ERR_INVALID_ARG_VALUE` is thrown. A zero-length `Buffer` is created
+             * if `size` is 0.
+             *
+             * The underlying memory for `Buffer` instances created in this way is _not_
+             * _initialized_. The contents of the newly created `Buffer` are unknown and _may contain sensitive data_. Use `buf.fill(0)` to initialize
+             * such `Buffer` instances with zeroes.
+             *
+             * When using `Buffer.allocUnsafe()` to allocate new `Buffer` instances,
+             * allocations under 4 KB are sliced from a single pre-allocated `Buffer`. This
+             * allows applications to avoid the garbage collection overhead of creating many
+             * individually allocated `Buffer` instances. This approach improves both
+             * performance and memory usage by eliminating the need to track and clean up as
+             * many individual `ArrayBuffer` objects.
+             *
+             * However, in the case where a developer may need to retain a small chunk of
+             * memory from a pool for an indeterminate amount of time, it may be appropriate
+             * to create an un-pooled `Buffer` instance using `Buffer.allocUnsafeSlow()` and
+             * then copying out the relevant bits.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Need to keep around a few small chunks of memory.
+             * const store = [];
+             *
+             * socket.on('readable', () => {
+             *   let data;
+             *   while (null !== (data = readable.read())) {
+             *     // Allocate for retained data.
+             *     const sb = Buffer.allocUnsafeSlow(10);
+             *
+             *     // Copy the data into the new allocation.
+             *     data.copy(sb, 0, 0, 10);
+             *
+             *     store.push(sb);
+             *   }
+             * });
+             * ```
+             *
+             * A `TypeError` will be thrown if `size` is not a number.
+             * @since v5.12.0
+             * @param size The desired length of the new `Buffer`.
+             */
+            allocUnsafeSlow(size: number): Buffer;
+            /**
+             * This is the size (in bytes) of pre-allocated internal `Buffer` instances used
+             * for pooling. This value may be modified.
+             * @since v0.11.3
+             */
+            poolSize: number;
+        }
+        interface Buffer extends Uint8Array {
+            /**
+             * Writes `string` to `buf` at `offset` according to the character encoding in`encoding`. The `length` parameter is the number of bytes to write. If `buf` did
+             * not contain enough space to fit the entire string, only part of `string` will be
+             * written. However, partially encoded characters will not be written.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.alloc(256);
+             *
+             * const len = buf.write('\u00bd + \u00bc = \u00be', 0);
+             *
+             * console.log(`${len} bytes: ${buf.toString('utf8', 0, len)}`);
+             * // Prints: 12 bytes: ½ + ¼ = ¾
+             *
+             * const buffer = Buffer.alloc(10);
+             *
+             * const length = buffer.write('abcd', 8);
+             *
+             * console.log(`${length} bytes: ${buffer.toString('utf8', 8, 10)}`);
+             * // Prints: 2 bytes : ab
+             * ```
+             * @since v0.1.90
+             * @param string String to write to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write `string`.
+             * @param [length=buf.length - offset] Maximum number of bytes to write (written bytes will not exceed `buf.length - offset`).
+             * @param [encoding='utf8'] The character encoding of `string`.
+             * @return Number of bytes written.
+             */
+            write(string: string, encoding?: BufferEncoding): number;
+            write(string: string, offset: number, encoding?: BufferEncoding): number;
+            write(string: string, offset: number, length: number, encoding?: BufferEncoding): number;
+            /**
+             * Decodes `buf` to a string according to the specified character encoding in`encoding`. `start` and `end` may be passed to decode only a subset of `buf`.
+             *
+             * If `encoding` is `'utf8'` and a byte sequence in the input is not valid UTF-8,
+             * then each invalid byte is replaced with the replacement character `U+FFFD`.
+             *
+             * The maximum length of a string instance (in UTF-16 code units) is available
+             * as {@link constants.MAX_STRING_LENGTH}.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf1 = Buffer.allocUnsafe(26);
+             *
+             * for (let i = 0; i < 26; i++) {
+             *   // 97 is the decimal ASCII value for 'a'.
+             *   buf1[i] = i + 97;
+             * }
+             *
+             * console.log(buf1.toString('utf8'));
+             * // Prints: abcdefghijklmnopqrstuvwxyz
+             * console.log(buf1.toString('utf8', 0, 5));
+             * // Prints: abcde
+             *
+             * const buf2 = Buffer.from('tést');
+             *
+             * console.log(buf2.toString('hex'));
+             * // Prints: 74c3a97374
+             * console.log(buf2.toString('utf8', 0, 3));
+             * // Prints: té
+             * console.log(buf2.toString(undefined, 0, 3));
+             * // Prints: té
+             * ```
+             * @since v0.1.90
+             * @param [encoding='utf8'] The character encoding to use.
+             * @param [start=0] The byte offset to start decoding at.
+             * @param [end=buf.length] The byte offset to stop decoding at (not inclusive).
+             */
+            toString(encoding?: BufferEncoding, start?: number, end?: number): string;
+            /**
+             * Returns a JSON representation of `buf`. [`JSON.stringify()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify) implicitly calls
+             * this function when stringifying a `Buffer` instance.
+             *
+             * `Buffer.from()` accepts objects in the format returned from this method.
+             * In particular, `Buffer.from(buf.toJSON())` works like `Buffer.from(buf)`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x1, 0x2, 0x3, 0x4, 0x5]);
+             * const json = JSON.stringify(buf);
+             *
+             * console.log(json);
+             * // Prints: {"type":"Buffer","data":[1,2,3,4,5]}
+             *
+             * const copy = JSON.parse(json, (key, value) => {
+             *   return value &#x26;&#x26; value.type === 'Buffer' ?
+             *     Buffer.from(value) :
+             *     value;
+             * });
+             *
+             * console.log(copy);
+             * // Prints: <Buffer 01 02 03 04 05>
+             * ```
+             * @since v0.9.2
+             */
+            toJSON(): {
+                type: 'Buffer';
+                data: number[];
+            };
+            /**
+             * Returns `true` if both `buf` and `otherBuffer` have exactly the same bytes,`false` otherwise. Equivalent to `buf.compare(otherBuffer) === 0`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf1 = Buffer.from('ABC');
+             * const buf2 = Buffer.from('414243', 'hex');
+             * const buf3 = Buffer.from('ABCD');
+             *
+             * console.log(buf1.equals(buf2));
+             * // Prints: true
+             * console.log(buf1.equals(buf3));
+             * // Prints: false
+             * ```
+             * @since v0.11.13
+             * @param otherBuffer A `Buffer` or {@link Uint8Array} with which to compare `buf`.
+             */
+            equals(otherBuffer: Uint8Array): boolean;
+            /**
+             * Compares `buf` with `target` and returns a number indicating whether `buf`comes before, after, or is the same as `target` in sort order.
+             * Comparison is based on the actual sequence of bytes in each `Buffer`.
+             *
+             * * `0` is returned if `target` is the same as `buf`
+             * * `1` is returned if `target` should come _before_`buf` when sorted.
+             * * `-1` is returned if `target` should come _after_`buf` when sorted.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf1 = Buffer.from('ABC');
+             * const buf2 = Buffer.from('BCD');
+             * const buf3 = Buffer.from('ABCD');
+             *
+             * console.log(buf1.compare(buf1));
+             * // Prints: 0
+             * console.log(buf1.compare(buf2));
+             * // Prints: -1
+             * console.log(buf1.compare(buf3));
+             * // Prints: -1
+             * console.log(buf2.compare(buf1));
+             * // Prints: 1
+             * console.log(buf2.compare(buf3));
+             * // Prints: 1
+             * console.log([buf1, buf2, buf3].sort(Buffer.compare));
+             * // Prints: [ <Buffer 41 42 43>, <Buffer 41 42 43 44>, <Buffer 42 43 44> ]
+             * // (This result is equal to: [buf1, buf3, buf2].)
+             * ```
+             *
+             * The optional `targetStart`, `targetEnd`, `sourceStart`, and `sourceEnd`arguments can be used to limit the comparison to specific ranges within `target`and `buf` respectively.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf1 = Buffer.from([1, 2, 3, 4, 5, 6, 7, 8, 9]);
+             * const buf2 = Buffer.from([5, 6, 7, 8, 9, 1, 2, 3, 4]);
+             *
+             * console.log(buf1.compare(buf2, 5, 9, 0, 4));
+             * // Prints: 0
+             * console.log(buf1.compare(buf2, 0, 6, 4));
+             * // Prints: -1
+             * console.log(buf1.compare(buf2, 5, 6, 5));
+             * // Prints: 1
+             * ```
+             *
+             * `ERR_OUT_OF_RANGE` is thrown if `targetStart < 0`, `sourceStart < 0`,`targetEnd > target.byteLength`, or `sourceEnd > source.byteLength`.
+             * @since v0.11.13
+             * @param target A `Buffer` or {@link Uint8Array} with which to compare `buf`.
+             * @param [targetStart=0] The offset within `target` at which to begin comparison.
+             * @param [targetEnd=target.length] The offset within `target` at which to end comparison (not inclusive).
+             * @param [sourceStart=0] The offset within `buf` at which to begin comparison.
+             * @param [sourceEnd=buf.length] The offset within `buf` at which to end comparison (not inclusive).
+             */
+            compare(target: Uint8Array, targetStart?: number, targetEnd?: number, sourceStart?: number, sourceEnd?: number): -1 | 0 | 1;
+            /**
+             * Copies data from a region of `buf` to a region in `target`, even if the `target`memory region overlaps with `buf`.
+             *
+             * [`TypedArray.prototype.set()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/set) performs the same operation, and is available
+             * for all TypedArrays, including Node.js `Buffer`s, although it takes
+             * different function arguments.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Create two `Buffer` instances.
+             * const buf1 = Buffer.allocUnsafe(26);
+             * const buf2 = Buffer.allocUnsafe(26).fill('!');
+             *
+             * for (let i = 0; i < 26; i++) {
+             *   // 97 is the decimal ASCII value for 'a'.
+             *   buf1[i] = i + 97;
+             * }
+             *
+             * // Copy `buf1` bytes 16 through 19 into `buf2` starting at byte 8 of `buf2`.
+             * buf1.copy(buf2, 8, 16, 20);
+             * // This is equivalent to:
+             * // buf2.set(buf1.subarray(16, 20), 8);
+             *
+             * console.log(buf2.toString('ascii', 0, 25));
+             * // Prints: !!!!!!!!qrst!!!!!!!!!!!!!
+             * ```
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Create a `Buffer` and copy data from one region to an overlapping region
+             * // within the same `Buffer`.
+             *
+             * const buf = Buffer.allocUnsafe(26);
+             *
+             * for (let i = 0; i < 26; i++) {
+             *   // 97 is the decimal ASCII value for 'a'.
+             *   buf[i] = i + 97;
+             * }
+             *
+             * buf.copy(buf, 0, 4, 10);
+             *
+             * console.log(buf.toString());
+             * // Prints: efghijghijklmnopqrstuvwxyz
+             * ```
+             * @since v0.1.90
+             * @param target A `Buffer` or {@link Uint8Array} to copy into.
+             * @param [targetStart=0] The offset within `target` at which to begin writing.
+             * @param [sourceStart=0] The offset within `buf` from which to begin copying.
+             * @param [sourceEnd=buf.length] The offset within `buf` at which to stop copying (not inclusive).
+             * @return The number of bytes copied.
+             */
+            copy(target: Uint8Array, targetStart?: number, sourceStart?: number, sourceEnd?: number): number;
+            /**
+             * Returns a new `Buffer` that references the same memory as the original, but
+             * offset and cropped by the `start` and `end` indices.
+             *
+             * This method is not compatible with the `Uint8Array.prototype.slice()`,
+             * which is a superclass of `Buffer`. To copy the slice, use`Uint8Array.prototype.slice()`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from('buffer');
+             *
+             * const copiedBuf = Uint8Array.prototype.slice.call(buf);
+             * copiedBuf[0]++;
+             * console.log(copiedBuf.toString());
+             * // Prints: cuffer
+             *
+             * console.log(buf.toString());
+             * // Prints: buffer
+             *
+             * // With buf.slice(), the original buffer is modified.
+             * const notReallyCopiedBuf = buf.slice();
+             * notReallyCopiedBuf[0]++;
+             * console.log(notReallyCopiedBuf.toString());
+             * // Prints: cuffer
+             * console.log(buf.toString());
+             * // Also prints: cuffer (!)
+             * ```
+             * @since v0.3.0
+             * @deprecated Use `subarray` instead.
+             * @param [start=0] Where the new `Buffer` will start.
+             * @param [end=buf.length] Where the new `Buffer` will end (not inclusive).
+             */
+            slice(start?: number, end?: number): Buffer;
+            /**
+             * Returns a new `Buffer` that references the same memory as the original, but
+             * offset and cropped by the `start` and `end` indices.
+             *
+             * Specifying `end` greater than `buf.length` will return the same result as
+             * that of `end` equal to `buf.length`.
+             *
+             * This method is inherited from [`TypedArray.prototype.subarray()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray/subarray).
+             *
+             * Modifying the new `Buffer` slice will modify the memory in the original `Buffer`because the allocated memory of the two objects overlap.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Create a `Buffer` with the ASCII alphabet, take a slice, and modify one byte
+             * // from the original `Buffer`.
+             *
+             * const buf1 = Buffer.allocUnsafe(26);
+             *
+             * for (let i = 0; i < 26; i++) {
+             *   // 97 is the decimal ASCII value for 'a'.
+             *   buf1[i] = i + 97;
+             * }
+             *
+             * const buf2 = buf1.subarray(0, 3);
+             *
+             * console.log(buf2.toString('ascii', 0, buf2.length));
+             * // Prints: abc
+             *
+             * buf1[0] = 33;
+             *
+             * console.log(buf2.toString('ascii', 0, buf2.length));
+             * // Prints: !bc
+             * ```
+             *
+             * Specifying negative indexes causes the slice to be generated relative to the
+             * end of `buf` rather than the beginning.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from('buffer');
+             *
+             * console.log(buf.subarray(-6, -1).toString());
+             * // Prints: buffe
+             * // (Equivalent to buf.subarray(0, 5).)
+             *
+             * console.log(buf.subarray(-6, -2).toString());
+             * // Prints: buff
+             * // (Equivalent to buf.subarray(0, 4).)
+             *
+             * console.log(buf.subarray(-5, -2).toString());
+             * // Prints: uff
+             * // (Equivalent to buf.subarray(1, 4).)
+             * ```
+             * @since v3.0.0
+             * @param [start=0] Where the new `Buffer` will start.
+             * @param [end=buf.length] Where the new `Buffer` will end (not inclusive).
+             */
+            subarray(start?: number, end?: number): Buffer;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as big-endian.
+             *
+             * `value` is interpreted and written as a two's complement signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(8);
+             *
+             * buf.writeBigInt64BE(0x0102030405060708n, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 01 02 03 04 05 06 07 08>
+             * ```
+             * @since v12.0.0, v10.20.0
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy: `0 <= offset <= buf.length - 8`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeBigInt64BE(value: bigint, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as little-endian.
+             *
+             * `value` is interpreted and written as a two's complement signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(8);
+             *
+             * buf.writeBigInt64LE(0x0102030405060708n, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 08 07 06 05 04 03 02 01>
+             * ```
+             * @since v12.0.0, v10.20.0
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy: `0 <= offset <= buf.length - 8`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeBigInt64LE(value: bigint, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as big-endian.
+             *
+             * This function is also available under the `writeBigUint64BE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(8);
+             *
+             * buf.writeBigUInt64BE(0xdecafafecacefaden, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer de ca fa fe ca ce fa de>
+             * ```
+             * @since v12.0.0, v10.20.0
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy: `0 <= offset <= buf.length - 8`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeBigUInt64BE(value: bigint, offset?: number): number;
+            /**
+             * @alias Buffer.writeBigUInt64BE
+             * @since v14.10.0, v12.19.0
+             */
+            writeBigUint64BE(value: bigint, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as little-endian
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(8);
+             *
+             * buf.writeBigUInt64LE(0xdecafafecacefaden, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer de fa ce ca fe fa ca de>
+             * ```
+             *
+             * This function is also available under the `writeBigUint64LE` alias.
+             * @since v12.0.0, v10.20.0
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy: `0 <= offset <= buf.length - 8`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeBigUInt64LE(value: bigint, offset?: number): number;
+            /**
+             * @alias Buffer.writeBigUInt64LE
+             * @since v14.10.0, v12.19.0
+             */
+            writeBigUint64LE(value: bigint, offset?: number): number;
+            /**
+             * Writes `byteLength` bytes of `value` to `buf` at the specified `offset`as little-endian. Supports up to 48 bits of accuracy. Behavior is undefined
+             * when `value` is anything other than an unsigned integer.
+             *
+             * This function is also available under the `writeUintLE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(6);
+             *
+             * buf.writeUIntLE(0x1234567890ab, 0, 6);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer ab 90 78 56 34 12>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param offset Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - byteLength`.
+             * @param byteLength Number of bytes to write. Must satisfy `0 < byteLength <= 6`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeUIntLE(value: number, offset: number, byteLength: number): number;
+            /**
+             * @alias Buffer.writeUIntLE
+             * @since v14.9.0, v12.19.0
+             */
+            writeUintLE(value: number, offset: number, byteLength: number): number;
+            /**
+             * Writes `byteLength` bytes of `value` to `buf` at the specified `offset`as big-endian. Supports up to 48 bits of accuracy. Behavior is undefined
+             * when `value` is anything other than an unsigned integer.
+             *
+             * This function is also available under the `writeUintBE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(6);
+             *
+             * buf.writeUIntBE(0x1234567890ab, 0, 6);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 12 34 56 78 90 ab>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param offset Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - byteLength`.
+             * @param byteLength Number of bytes to write. Must satisfy `0 < byteLength <= 6`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeUIntBE(value: number, offset: number, byteLength: number): number;
+            /**
+             * @alias Buffer.writeUIntBE
+             * @since v14.9.0, v12.19.0
+             */
+            writeUintBE(value: number, offset: number, byteLength: number): number;
+            /**
+             * Writes `byteLength` bytes of `value` to `buf` at the specified `offset`as little-endian. Supports up to 48 bits of accuracy. Behavior is undefined
+             * when `value` is anything other than a signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(6);
+             *
+             * buf.writeIntLE(0x1234567890ab, 0, 6);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer ab 90 78 56 34 12>
+             * ```
+             * @since v0.11.15
+             * @param value Number to be written to `buf`.
+             * @param offset Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - byteLength`.
+             * @param byteLength Number of bytes to write. Must satisfy `0 < byteLength <= 6`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeIntLE(value: number, offset: number, byteLength: number): number;
+            /**
+             * Writes `byteLength` bytes of `value` to `buf` at the specified `offset`as big-endian. Supports up to 48 bits of accuracy. Behavior is undefined when`value` is anything other than a
+             * signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(6);
+             *
+             * buf.writeIntBE(0x1234567890ab, 0, 6);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 12 34 56 78 90 ab>
+             * ```
+             * @since v0.11.15
+             * @param value Number to be written to `buf`.
+             * @param offset Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - byteLength`.
+             * @param byteLength Number of bytes to write. Must satisfy `0 < byteLength <= 6`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeIntBE(value: number, offset: number, byteLength: number): number;
+            /**
+             * Reads an unsigned, big-endian 64-bit integer from `buf` at the specified`offset`.
+             *
+             * This function is also available under the `readBigUint64BE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff]);
+             *
+             * console.log(buf.readBigUInt64BE(0));
+             * // Prints: 4294967295n
+             * ```
+             * @since v12.0.0, v10.20.0
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy: `0 <= offset <= buf.length - 8`.
+             */
+            readBigUInt64BE(offset?: number): bigint;
+            /**
+             * @alias Buffer.readBigUInt64BE
+             * @since v14.10.0, v12.19.0
+             */
+            readBigUint64BE(offset?: number): bigint;
+            /**
+             * Reads an unsigned, little-endian 64-bit integer from `buf` at the specified`offset`.
+             *
+             * This function is also available under the `readBigUint64LE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x00, 0x00, 0x00, 0x00, 0xff, 0xff, 0xff, 0xff]);
+             *
+             * console.log(buf.readBigUInt64LE(0));
+             * // Prints: 18446744069414584320n
+             * ```
+             * @since v12.0.0, v10.20.0
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy: `0 <= offset <= buf.length - 8`.
+             */
+            readBigUInt64LE(offset?: number): bigint;
+            /**
+             * @alias Buffer.readBigUInt64LE
+             * @since v14.10.0, v12.19.0
+             */
+            readBigUint64LE(offset?: number): bigint;
+            /**
+             * Reads a signed, big-endian 64-bit integer from `buf` at the specified `offset`.
+             *
+             * Integers read from a `Buffer` are interpreted as two's complement signed
+             * values.
+             * @since v12.0.0, v10.20.0
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy: `0 <= offset <= buf.length - 8`.
+             */
+            readBigInt64BE(offset?: number): bigint;
+            /**
+             * Reads a signed, little-endian 64-bit integer from `buf` at the specified`offset`.
+             *
+             * Integers read from a `Buffer` are interpreted as two's complement signed
+             * values.
+             * @since v12.0.0, v10.20.0
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy: `0 <= offset <= buf.length - 8`.
+             */
+            readBigInt64LE(offset?: number): bigint;
+            /**
+             * Reads `byteLength` number of bytes from `buf` at the specified `offset`and interprets the result as an unsigned, little-endian integer supporting
+             * up to 48 bits of accuracy.
+             *
+             * This function is also available under the `readUintLE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x12, 0x34, 0x56, 0x78, 0x90, 0xab]);
+             *
+             * console.log(buf.readUIntLE(0, 6).toString(16));
+             * // Prints: ab9078563412
+             * ```
+             * @since v0.11.15
+             * @param offset Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - byteLength`.
+             * @param byteLength Number of bytes to read. Must satisfy `0 < byteLength <= 6`.
+             */
+            readUIntLE(offset: number, byteLength: number): number;
+            /**
+             * @alias Buffer.readUIntLE
+             * @since v14.9.0, v12.19.0
+             */
+            readUintLE(offset: number, byteLength: number): number;
+            /**
+             * Reads `byteLength` number of bytes from `buf` at the specified `offset`and interprets the result as an unsigned big-endian integer supporting
+             * up to 48 bits of accuracy.
+             *
+             * This function is also available under the `readUintBE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x12, 0x34, 0x56, 0x78, 0x90, 0xab]);
+             *
+             * console.log(buf.readUIntBE(0, 6).toString(16));
+             * // Prints: 1234567890ab
+             * console.log(buf.readUIntBE(1, 6).toString(16));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.11.15
+             * @param offset Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - byteLength`.
+             * @param byteLength Number of bytes to read. Must satisfy `0 < byteLength <= 6`.
+             */
+            readUIntBE(offset: number, byteLength: number): number;
+            /**
+             * @alias Buffer.readUIntBE
+             * @since v14.9.0, v12.19.0
+             */
+            readUintBE(offset: number, byteLength: number): number;
+            /**
+             * Reads `byteLength` number of bytes from `buf` at the specified `offset`and interprets the result as a little-endian, two's complement signed value
+             * supporting up to 48 bits of accuracy.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x12, 0x34, 0x56, 0x78, 0x90, 0xab]);
+             *
+             * console.log(buf.readIntLE(0, 6).toString(16));
+             * // Prints: -546f87a9cbee
+             * ```
+             * @since v0.11.15
+             * @param offset Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - byteLength`.
+             * @param byteLength Number of bytes to read. Must satisfy `0 < byteLength <= 6`.
+             */
+            readIntLE(offset: number, byteLength: number): number;
+            /**
+             * Reads `byteLength` number of bytes from `buf` at the specified `offset`and interprets the result as a big-endian, two's complement signed value
+             * supporting up to 48 bits of accuracy.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x12, 0x34, 0x56, 0x78, 0x90, 0xab]);
+             *
+             * console.log(buf.readIntBE(0, 6).toString(16));
+             * // Prints: 1234567890ab
+             * console.log(buf.readIntBE(1, 6).toString(16));
+             * // Throws ERR_OUT_OF_RANGE.
+             * console.log(buf.readIntBE(1, 0).toString(16));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.11.15
+             * @param offset Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - byteLength`.
+             * @param byteLength Number of bytes to read. Must satisfy `0 < byteLength <= 6`.
+             */
+            readIntBE(offset: number, byteLength: number): number;
+            /**
+             * Reads an unsigned 8-bit integer from `buf` at the specified `offset`.
+             *
+             * This function is also available under the `readUint8` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([1, -2]);
+             *
+             * console.log(buf.readUInt8(0));
+             * // Prints: 1
+             * console.log(buf.readUInt8(1));
+             * // Prints: 254
+             * console.log(buf.readUInt8(2));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.5.0
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 1`.
+             */
+            readUInt8(offset?: number): number;
+            /**
+             * @alias Buffer.readUInt8
+             * @since v14.9.0, v12.19.0
+             */
+            readUint8(offset?: number): number;
+            /**
+             * Reads an unsigned, little-endian 16-bit integer from `buf` at the specified`offset`.
+             *
+             * This function is also available under the `readUint16LE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x12, 0x34, 0x56]);
+             *
+             * console.log(buf.readUInt16LE(0).toString(16));
+             * // Prints: 3412
+             * console.log(buf.readUInt16LE(1).toString(16));
+             * // Prints: 5634
+             * console.log(buf.readUInt16LE(2).toString(16));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.5.5
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 2`.
+             */
+            readUInt16LE(offset?: number): number;
+            /**
+             * @alias Buffer.readUInt16LE
+             * @since v14.9.0, v12.19.0
+             */
+            readUint16LE(offset?: number): number;
+            /**
+             * Reads an unsigned, big-endian 16-bit integer from `buf` at the specified`offset`.
+             *
+             * This function is also available under the `readUint16BE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x12, 0x34, 0x56]);
+             *
+             * console.log(buf.readUInt16BE(0).toString(16));
+             * // Prints: 1234
+             * console.log(buf.readUInt16BE(1).toString(16));
+             * // Prints: 3456
+             * ```
+             * @since v0.5.5
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 2`.
+             */
+            readUInt16BE(offset?: number): number;
+            /**
+             * @alias Buffer.readUInt16BE
+             * @since v14.9.0, v12.19.0
+             */
+            readUint16BE(offset?: number): number;
+            /**
+             * Reads an unsigned, little-endian 32-bit integer from `buf` at the specified`offset`.
+             *
+             * This function is also available under the `readUint32LE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x12, 0x34, 0x56, 0x78]);
+             *
+             * console.log(buf.readUInt32LE(0).toString(16));
+             * // Prints: 78563412
+             * console.log(buf.readUInt32LE(1).toString(16));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.5.5
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 4`.
+             */
+            readUInt32LE(offset?: number): number;
+            /**
+             * @alias Buffer.readUInt32LE
+             * @since v14.9.0, v12.19.0
+             */
+            readUint32LE(offset?: number): number;
+            /**
+             * Reads an unsigned, big-endian 32-bit integer from `buf` at the specified`offset`.
+             *
+             * This function is also available under the `readUint32BE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0x12, 0x34, 0x56, 0x78]);
+             *
+             * console.log(buf.readUInt32BE(0).toString(16));
+             * // Prints: 12345678
+             * ```
+             * @since v0.5.5
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 4`.
+             */
+            readUInt32BE(offset?: number): number;
+            /**
+             * @alias Buffer.readUInt32BE
+             * @since v14.9.0, v12.19.0
+             */
+            readUint32BE(offset?: number): number;
+            /**
+             * Reads a signed 8-bit integer from `buf` at the specified `offset`.
+             *
+             * Integers read from a `Buffer` are interpreted as two's complement signed values.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([-1, 5]);
+             *
+             * console.log(buf.readInt8(0));
+             * // Prints: -1
+             * console.log(buf.readInt8(1));
+             * // Prints: 5
+             * console.log(buf.readInt8(2));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.5.0
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 1`.
+             */
+            readInt8(offset?: number): number;
+            /**
+             * Reads a signed, little-endian 16-bit integer from `buf` at the specified`offset`.
+             *
+             * Integers read from a `Buffer` are interpreted as two's complement signed values.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0, 5]);
+             *
+             * console.log(buf.readInt16LE(0));
+             * // Prints: 1280
+             * console.log(buf.readInt16LE(1));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.5.5
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 2`.
+             */
+            readInt16LE(offset?: number): number;
+            /**
+             * Reads a signed, big-endian 16-bit integer from `buf` at the specified `offset`.
+             *
+             * Integers read from a `Buffer` are interpreted as two's complement signed values.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0, 5]);
+             *
+             * console.log(buf.readInt16BE(0));
+             * // Prints: 5
+             * ```
+             * @since v0.5.5
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 2`.
+             */
+            readInt16BE(offset?: number): number;
+            /**
+             * Reads a signed, little-endian 32-bit integer from `buf` at the specified`offset`.
+             *
+             * Integers read from a `Buffer` are interpreted as two's complement signed values.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0, 0, 0, 5]);
+             *
+             * console.log(buf.readInt32LE(0));
+             * // Prints: 83886080
+             * console.log(buf.readInt32LE(1));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.5.5
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 4`.
+             */
+            readInt32LE(offset?: number): number;
+            /**
+             * Reads a signed, big-endian 32-bit integer from `buf` at the specified `offset`.
+             *
+             * Integers read from a `Buffer` are interpreted as two's complement signed values.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([0, 0, 0, 5]);
+             *
+             * console.log(buf.readInt32BE(0));
+             * // Prints: 5
+             * ```
+             * @since v0.5.5
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 4`.
+             */
+            readInt32BE(offset?: number): number;
+            /**
+             * Reads a 32-bit, little-endian float from `buf` at the specified `offset`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([1, 2, 3, 4]);
+             *
+             * console.log(buf.readFloatLE(0));
+             * // Prints: 1.539989614439558e-36
+             * console.log(buf.readFloatLE(1));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.11.15
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 4`.
+             */
+            readFloatLE(offset?: number): number;
+            /**
+             * Reads a 32-bit, big-endian float from `buf` at the specified `offset`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([1, 2, 3, 4]);
+             *
+             * console.log(buf.readFloatBE(0));
+             * // Prints: 2.387939260590663e-38
+             * ```
+             * @since v0.11.15
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 4`.
+             */
+            readFloatBE(offset?: number): number;
+            /**
+             * Reads a 64-bit, little-endian double from `buf` at the specified `offset`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([1, 2, 3, 4, 5, 6, 7, 8]);
+             *
+             * console.log(buf.readDoubleLE(0));
+             * // Prints: 5.447603722011605e-270
+             * console.log(buf.readDoubleLE(1));
+             * // Throws ERR_OUT_OF_RANGE.
+             * ```
+             * @since v0.11.15
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 8`.
+             */
+            readDoubleLE(offset?: number): number;
+            /**
+             * Reads a 64-bit, big-endian double from `buf` at the specified `offset`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from([1, 2, 3, 4, 5, 6, 7, 8]);
+             *
+             * console.log(buf.readDoubleBE(0));
+             * // Prints: 8.20788039913184e-304
+             * ```
+             * @since v0.11.15
+             * @param [offset=0] Number of bytes to skip before starting to read. Must satisfy `0 <= offset <= buf.length - 8`.
+             */
+            readDoubleBE(offset?: number): number;
+            reverse(): this;
+            /**
+             * Interprets `buf` as an array of unsigned 16-bit integers and swaps the
+             * byte order _in-place_. Throws `ERR_INVALID_BUFFER_SIZE` if `buf.length` is not a multiple of 2.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf1 = Buffer.from([0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8]);
+             *
+             * console.log(buf1);
+             * // Prints: <Buffer 01 02 03 04 05 06 07 08>
+             *
+             * buf1.swap16();
+             *
+             * console.log(buf1);
+             * // Prints: <Buffer 02 01 04 03 06 05 08 07>
+             *
+             * const buf2 = Buffer.from([0x1, 0x2, 0x3]);
+             *
+             * buf2.swap16();
+             * // Throws ERR_INVALID_BUFFER_SIZE.
+             * ```
+             *
+             * One convenient use of `buf.swap16()` is to perform a fast in-place conversion
+             * between UTF-16 little-endian and UTF-16 big-endian:
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from('This is little-endian UTF-16', 'utf16le');
+             * buf.swap16(); // Convert to big-endian UTF-16 text.
+             * ```
+             * @since v5.10.0
+             * @return A reference to `buf`.
+             */
+            swap16(): Buffer;
+            /**
+             * Interprets `buf` as an array of unsigned 32-bit integers and swaps the
+             * byte order _in-place_. Throws `ERR_INVALID_BUFFER_SIZE` if `buf.length` is not a multiple of 4.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf1 = Buffer.from([0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8]);
+             *
+             * console.log(buf1);
+             * // Prints: <Buffer 01 02 03 04 05 06 07 08>
+             *
+             * buf1.swap32();
+             *
+             * console.log(buf1);
+             * // Prints: <Buffer 04 03 02 01 08 07 06 05>
+             *
+             * const buf2 = Buffer.from([0x1, 0x2, 0x3]);
+             *
+             * buf2.swap32();
+             * // Throws ERR_INVALID_BUFFER_SIZE.
+             * ```
+             * @since v5.10.0
+             * @return A reference to `buf`.
+             */
+            swap32(): Buffer;
+            /**
+             * Interprets `buf` as an array of 64-bit numbers and swaps byte order _in-place_.
+             * Throws `ERR_INVALID_BUFFER_SIZE` if `buf.length` is not a multiple of 8.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf1 = Buffer.from([0x1, 0x2, 0x3, 0x4, 0x5, 0x6, 0x7, 0x8]);
+             *
+             * console.log(buf1);
+             * // Prints: <Buffer 01 02 03 04 05 06 07 08>
+             *
+             * buf1.swap64();
+             *
+             * console.log(buf1);
+             * // Prints: <Buffer 08 07 06 05 04 03 02 01>
+             *
+             * const buf2 = Buffer.from([0x1, 0x2, 0x3]);
+             *
+             * buf2.swap64();
+             * // Throws ERR_INVALID_BUFFER_SIZE.
+             * ```
+             * @since v6.3.0
+             * @return A reference to `buf`.
+             */
+            swap64(): Buffer;
+            /**
+             * Writes `value` to `buf` at the specified `offset`. `value` must be a
+             * valid unsigned 8-bit integer. Behavior is undefined when `value` is anything
+             * other than an unsigned 8-bit integer.
+             *
+             * This function is also available under the `writeUint8` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeUInt8(0x3, 0);
+             * buf.writeUInt8(0x4, 1);
+             * buf.writeUInt8(0x23, 2);
+             * buf.writeUInt8(0x42, 3);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 03 04 23 42>
+             * ```
+             * @since v0.5.0
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 1`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeUInt8(value: number, offset?: number): number;
+            /**
+             * @alias Buffer.writeUInt8
+             * @since v14.9.0, v12.19.0
+             */
+            writeUint8(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as little-endian. The `value`must be a valid unsigned 16-bit integer. Behavior is undefined when `value` is
+             * anything other than an unsigned 16-bit integer.
+             *
+             * This function is also available under the `writeUint16LE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeUInt16LE(0xdead, 0);
+             * buf.writeUInt16LE(0xbeef, 2);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer ad de ef be>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 2`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeUInt16LE(value: number, offset?: number): number;
+            /**
+             * @alias Buffer.writeUInt16LE
+             * @since v14.9.0, v12.19.0
+             */
+            writeUint16LE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as big-endian. The `value`must be a valid unsigned 16-bit integer. Behavior is undefined when `value`is anything other than an
+             * unsigned 16-bit integer.
+             *
+             * This function is also available under the `writeUint16BE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeUInt16BE(0xdead, 0);
+             * buf.writeUInt16BE(0xbeef, 2);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer de ad be ef>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 2`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeUInt16BE(value: number, offset?: number): number;
+            /**
+             * @alias Buffer.writeUInt16BE
+             * @since v14.9.0, v12.19.0
+             */
+            writeUint16BE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as little-endian. The `value`must be a valid unsigned 32-bit integer. Behavior is undefined when `value` is
+             * anything other than an unsigned 32-bit integer.
+             *
+             * This function is also available under the `writeUint32LE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeUInt32LE(0xfeedface, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer ce fa ed fe>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 4`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeUInt32LE(value: number, offset?: number): number;
+            /**
+             * @alias Buffer.writeUInt32LE
+             * @since v14.9.0, v12.19.0
+             */
+            writeUint32LE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as big-endian. The `value`must be a valid unsigned 32-bit integer. Behavior is undefined when `value`is anything other than an
+             * unsigned 32-bit integer.
+             *
+             * This function is also available under the `writeUint32BE` alias.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeUInt32BE(0xfeedface, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer fe ed fa ce>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 4`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeUInt32BE(value: number, offset?: number): number;
+            /**
+             * @alias Buffer.writeUInt32BE
+             * @since v14.9.0, v12.19.0
+             */
+            writeUint32BE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset`. `value` must be a valid
+             * signed 8-bit integer. Behavior is undefined when `value` is anything other than
+             * a signed 8-bit integer.
+             *
+             * `value` is interpreted and written as a two's complement signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(2);
+             *
+             * buf.writeInt8(2, 0);
+             * buf.writeInt8(-2, 1);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 02 fe>
+             * ```
+             * @since v0.5.0
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 1`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeInt8(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as little-endian.  The `value`must be a valid signed 16-bit integer. Behavior is undefined when `value` is
+             * anything other than a signed 16-bit integer.
+             *
+             * The `value` is interpreted and written as a two's complement signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(2);
+             *
+             * buf.writeInt16LE(0x0304, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 04 03>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 2`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeInt16LE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as big-endian.  The `value`must be a valid signed 16-bit integer. Behavior is undefined when `value` is
+             * anything other than a signed 16-bit integer.
+             *
+             * The `value` is interpreted and written as a two's complement signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(2);
+             *
+             * buf.writeInt16BE(0x0102, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 01 02>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 2`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeInt16BE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as little-endian. The `value`must be a valid signed 32-bit integer. Behavior is undefined when `value` is
+             * anything other than a signed 32-bit integer.
+             *
+             * The `value` is interpreted and written as a two's complement signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeInt32LE(0x05060708, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 08 07 06 05>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 4`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeInt32LE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as big-endian. The `value`must be a valid signed 32-bit integer. Behavior is undefined when `value` is
+             * anything other than a signed 32-bit integer.
+             *
+             * The `value` is interpreted and written as a two's complement signed integer.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeInt32BE(0x01020304, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 01 02 03 04>
+             * ```
+             * @since v0.5.5
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 4`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeInt32BE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as little-endian. Behavior is
+             * undefined when `value` is anything other than a JavaScript number.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeFloatLE(0xcafebabe, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer bb fe 4a 4f>
+             * ```
+             * @since v0.11.15
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 4`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeFloatLE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as big-endian. Behavior is
+             * undefined when `value` is anything other than a JavaScript number.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(4);
+             *
+             * buf.writeFloatBE(0xcafebabe, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 4f 4a fe bb>
+             * ```
+             * @since v0.11.15
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 4`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeFloatBE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as little-endian. The `value`must be a JavaScript number. Behavior is undefined when `value` is anything
+             * other than a JavaScript number.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(8);
+             *
+             * buf.writeDoubleLE(123.456, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 77 be 9f 1a 2f dd 5e 40>
+             * ```
+             * @since v0.11.15
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 8`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeDoubleLE(value: number, offset?: number): number;
+            /**
+             * Writes `value` to `buf` at the specified `offset` as big-endian. The `value`must be a JavaScript number. Behavior is undefined when `value` is anything
+             * other than a JavaScript number.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(8);
+             *
+             * buf.writeDoubleBE(123.456, 0);
+             *
+             * console.log(buf);
+             * // Prints: <Buffer 40 5e dd 2f 1a 9f be 77>
+             * ```
+             * @since v0.11.15
+             * @param value Number to be written to `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to write. Must satisfy `0 <= offset <= buf.length - 8`.
+             * @return `offset` plus the number of bytes written.
+             */
+            writeDoubleBE(value: number, offset?: number): number;
+            /**
+             * Fills `buf` with the specified `value`. If the `offset` and `end` are not given,
+             * the entire `buf` will be filled:
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Fill a `Buffer` with the ASCII character 'h'.
+             *
+             * const b = Buffer.allocUnsafe(50).fill('h');
+             *
+             * console.log(b.toString());
+             * // Prints: hhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhhh
+             * ```
+             *
+             * `value` is coerced to a `uint32` value if it is not a string, `Buffer`, or
+             * integer. If the resulting integer is greater than `255` (decimal), `buf` will be
+             * filled with `value &#x26; 255`.
+             *
+             * If the final write of a `fill()` operation falls on a multi-byte character,
+             * then only the bytes of that character that fit into `buf` are written:
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Fill a `Buffer` with character that takes up two bytes in UTF-8.
+             *
+             * console.log(Buffer.allocUnsafe(5).fill('\u0222'));
+             * // Prints: <Buffer c8 a2 c8 a2 c8>
+             * ```
+             *
+             * If `value` contains invalid characters, it is truncated; if no valid
+             * fill data remains, an exception is thrown:
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.allocUnsafe(5);
+             *
+             * console.log(buf.fill('a'));
+             * // Prints: <Buffer 61 61 61 61 61>
+             * console.log(buf.fill('aazz', 'hex'));
+             * // Prints: <Buffer aa aa aa aa aa>
+             * console.log(buf.fill('zz', 'hex'));
+             * // Throws an exception.
+             * ```
+             * @since v0.5.0
+             * @param value The value with which to fill `buf`.
+             * @param [offset=0] Number of bytes to skip before starting to fill `buf`.
+             * @param [end=buf.length] Where to stop filling `buf` (not inclusive).
+             * @param [encoding='utf8'] The encoding for `value` if `value` is a string.
+             * @return A reference to `buf`.
+             */
+            fill(value: string | Uint8Array | number, offset?: number, end?: number, encoding?: BufferEncoding): this;
+            /**
+             * If `value` is:
+             *
+             * * a string, `value` is interpreted according to the character encoding in`encoding`.
+             * * a `Buffer` or [`Uint8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array), `value` will be used in its entirety.
+             * To compare a partial `Buffer`, use `buf.subarray`.
+             * * a number, `value` will be interpreted as an unsigned 8-bit integer
+             * value between `0` and `255`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from('this is a buffer');
+             *
+             * console.log(buf.indexOf('this'));
+             * // Prints: 0
+             * console.log(buf.indexOf('is'));
+             * // Prints: 2
+             * console.log(buf.indexOf(Buffer.from('a buffer')));
+             * // Prints: 8
+             * console.log(buf.indexOf(97));
+             * // Prints: 8 (97 is the decimal ASCII value for 'a')
+             * console.log(buf.indexOf(Buffer.from('a buffer example')));
+             * // Prints: -1
+             * console.log(buf.indexOf(Buffer.from('a buffer example').slice(0, 8)));
+             * // Prints: 8
+             *
+             * const utf16Buffer = Buffer.from('\u039a\u0391\u03a3\u03a3\u0395', 'utf16le');
+             *
+             * console.log(utf16Buffer.indexOf('\u03a3', 0, 'utf16le'));
+             * // Prints: 4
+             * console.log(utf16Buffer.indexOf('\u03a3', -4, 'utf16le'));
+             * // Prints: 6
+             * ```
+             *
+             * If `value` is not a string, number, or `Buffer`, this method will throw a`TypeError`. If `value` is a number, it will be coerced to a valid byte value,
+             * an integer between 0 and 255.
+             *
+             * If `byteOffset` is not a number, it will be coerced to a number. If the result
+             * of coercion is `NaN` or `0`, then the entire buffer will be searched. This
+             * behavior matches [`String.prototype.indexOf()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/indexOf).
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const b = Buffer.from('abcdef');
+             *
+             * // Passing a value that's a number, but not a valid byte.
+             * // Prints: 2, equivalent to searching for 99 or 'c'.
+             * console.log(b.indexOf(99.9));
+             * console.log(b.indexOf(256 + 99));
+             *
+             * // Passing a byteOffset that coerces to NaN or 0.
+             * // Prints: 1, searching the whole buffer.
+             * console.log(b.indexOf('b', undefined));
+             * console.log(b.indexOf('b', {}));
+             * console.log(b.indexOf('b', null));
+             * console.log(b.indexOf('b', []));
+             * ```
+             *
+             * If `value` is an empty string or empty `Buffer` and `byteOffset` is less
+             * than `buf.length`, `byteOffset` will be returned. If `value` is empty and`byteOffset` is at least `buf.length`, `buf.length` will be returned.
+             * @since v1.5.0
+             * @param value What to search for.
+             * @param [byteOffset=0] Where to begin searching in `buf`. If negative, then offset is calculated from the end of `buf`.
+             * @param [encoding='utf8'] If `value` is a string, this is the encoding used to determine the binary representation of the string that will be searched for in `buf`.
+             * @return The index of the first occurrence of `value` in `buf`, or `-1` if `buf` does not contain `value`.
+             */
+            indexOf(value: string | number | Uint8Array, byteOffset?: number, encoding?: BufferEncoding): number;
+            /**
+             * Identical to `buf.indexOf()`, except the last occurrence of `value` is found
+             * rather than the first occurrence.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from('this buffer is a buffer');
+             *
+             * console.log(buf.lastIndexOf('this'));
+             * // Prints: 0
+             * console.log(buf.lastIndexOf('buffer'));
+             * // Prints: 17
+             * console.log(buf.lastIndexOf(Buffer.from('buffer')));
+             * // Prints: 17
+             * console.log(buf.lastIndexOf(97));
+             * // Prints: 15 (97 is the decimal ASCII value for 'a')
+             * console.log(buf.lastIndexOf(Buffer.from('yolo')));
+             * // Prints: -1
+             * console.log(buf.lastIndexOf('buffer', 5));
+             * // Prints: 5
+             * console.log(buf.lastIndexOf('buffer', 4));
+             * // Prints: -1
+             *
+             * const utf16Buffer = Buffer.from('\u039a\u0391\u03a3\u03a3\u0395', 'utf16le');
+             *
+             * console.log(utf16Buffer.lastIndexOf('\u03a3', undefined, 'utf16le'));
+             * // Prints: 6
+             * console.log(utf16Buffer.lastIndexOf('\u03a3', -5, 'utf16le'));
+             * // Prints: 4
+             * ```
+             *
+             * If `value` is not a string, number, or `Buffer`, this method will throw a`TypeError`. If `value` is a number, it will be coerced to a valid byte value,
+             * an integer between 0 and 255.
+             *
+             * If `byteOffset` is not a number, it will be coerced to a number. Any arguments
+             * that coerce to `NaN`, like `{}` or `undefined`, will search the whole buffer.
+             * This behavior matches [`String.prototype.lastIndexOf()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/lastIndexOf).
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const b = Buffer.from('abcdef');
+             *
+             * // Passing a value that's a number, but not a valid byte.
+             * // Prints: 2, equivalent to searching for 99 or 'c'.
+             * console.log(b.lastIndexOf(99.9));
+             * console.log(b.lastIndexOf(256 + 99));
+             *
+             * // Passing a byteOffset that coerces to NaN.
+             * // Prints: 1, searching the whole buffer.
+             * console.log(b.lastIndexOf('b', undefined));
+             * console.log(b.lastIndexOf('b', {}));
+             *
+             * // Passing a byteOffset that coerces to 0.
+             * // Prints: -1, equivalent to passing 0.
+             * console.log(b.lastIndexOf('b', null));
+             * console.log(b.lastIndexOf('b', []));
+             * ```
+             *
+             * If `value` is an empty string or empty `Buffer`, `byteOffset` will be returned.
+             * @since v6.0.0
+             * @param value What to search for.
+             * @param [byteOffset=buf.length - 1] Where to begin searching in `buf`. If negative, then offset is calculated from the end of `buf`.
+             * @param [encoding='utf8'] If `value` is a string, this is the encoding used to determine the binary representation of the string that will be searched for in `buf`.
+             * @return The index of the last occurrence of `value` in `buf`, or `-1` if `buf` does not contain `value`.
+             */
+            lastIndexOf(value: string | number | Uint8Array, byteOffset?: number, encoding?: BufferEncoding): number;
+            /**
+             * Creates and returns an [iterator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols) of `[index, byte]` pairs from the contents
+             * of `buf`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * // Log the entire contents of a `Buffer`.
+             *
+             * const buf = Buffer.from('buffer');
+             *
+             * for (const pair of buf.entries()) {
+             *   console.log(pair);
+             * }
+             * // Prints:
+             * //   [0, 98]
+             * //   [1, 117]
+             * //   [2, 102]
+             * //   [3, 102]
+             * //   [4, 101]
+             * //   [5, 114]
+             * ```
+             * @since v1.1.0
+             */
+            entries(): IterableIterator<[number, number]>;
+            /**
+             * Equivalent to `buf.indexOf() !== -1`.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from('this is a buffer');
+             *
+             * console.log(buf.includes('this'));
+             * // Prints: true
+             * console.log(buf.includes('is'));
+             * // Prints: true
+             * console.log(buf.includes(Buffer.from('a buffer')));
+             * // Prints: true
+             * console.log(buf.includes(97));
+             * // Prints: true (97 is the decimal ASCII value for 'a')
+             * console.log(buf.includes(Buffer.from('a buffer example')));
+             * // Prints: false
+             * console.log(buf.includes(Buffer.from('a buffer example').slice(0, 8)));
+             * // Prints: true
+             * console.log(buf.includes('this', 4));
+             * // Prints: false
+             * ```
+             * @since v5.3.0
+             * @param value What to search for.
+             * @param [byteOffset=0] Where to begin searching in `buf`. If negative, then offset is calculated from the end of `buf`.
+             * @param [encoding='utf8'] If `value` is a string, this is its encoding.
+             * @return `true` if `value` was found in `buf`, `false` otherwise.
+             */
+            includes(value: string | number | Buffer, byteOffset?: number, encoding?: BufferEncoding): boolean;
+            /**
+             * Creates and returns an [iterator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols) of `buf` keys (indices).
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from('buffer');
+             *
+             * for (const key of buf.keys()) {
+             *   console.log(key);
+             * }
+             * // Prints:
+             * //   0
+             * //   1
+             * //   2
+             * //   3
+             * //   4
+             * //   5
+             * ```
+             * @since v1.1.0
+             */
+            keys(): IterableIterator<number>;
+            /**
+             * Creates and returns an [iterator](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols) for `buf` values (bytes). This function is
+             * called automatically when a `Buffer` is used in a `for..of` statement.
+             *
+             * ```js
+             * import { Buffer } from 'buffer';
+             *
+             * const buf = Buffer.from('buffer');
+             *
+             * for (const value of buf.values()) {
+             *   console.log(value);
+             * }
+             * // Prints:
+             * //   98
+             * //   117
+             * //   102
+             * //   102
+             * //   101
+             * //   114
+             *
+             * for (const value of buf) {
+             *   console.log(value);
+             * }
+             * // Prints:
+             * //   98
+             * //   117
+             * //   102
+             * //   102
+             * //   101
+             * //   114
+             * ```
+             * @since v1.1.0
+             */
+            values(): IterableIterator<number>;
+        }
+        var Buffer: BufferConstructor;
+        /**
+         * Decodes a string of Base64-encoded data into bytes, and encodes those bytes
+         * into a string using Latin-1 (ISO-8859-1).
+         *
+         * The `data` may be any JavaScript-value that can be coerced into a string.
+         *
+         * **This function is only provided for compatibility with legacy web platform APIs**
+         * **and should never be used in new code, because they use strings to represent**
+         * **binary data and predate the introduction of typed arrays in JavaScript.**
+         * **For code running using Node.js APIs, converting between base64-encoded strings**
+         * **and binary data should be performed using `Buffer.from(str, 'base64')` and`buf.toString('base64')`.**
+         * @since v15.13.0, v14.17.0
+         * @deprecated Use `Buffer.from(data, 'base64')` instead.
+         * @param data The Base64-encoded input string.
+         */
+        function atob(data: string): string;
+        /**
+         * Decodes a string into bytes using Latin-1 (ISO-8859), and encodes those bytes
+         * into a string using Base64.
+         *
+         * The `data` may be any JavaScript-value that can be coerced into a string.
+         *
+         * **This function is only provided for compatibility with legacy web platform APIs**
+         * **and should never be used in new code, because they use strings to represent**
+         * **binary data and predate the introduction of typed arrays in JavaScript.**
+         * **For code running using Node.js APIs, converting between base64-encoded strings**
+         * **and binary data should be performed using `Buffer.from(str, 'base64')` and`buf.toString('base64')`.**
+         * @since v15.13.0, v14.17.0
+         * @deprecated Use `buf.toString('base64')` instead.
+         * @param data An ASCII (Latin1) string.
+         */
+        function btoa(data: string): string;
+    }
+}
+declare module 'node:buffer' {
+    export * from 'buffer';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/child_process.d.ts b/igv_component/node_modules/@types/node/ts4.8/child_process.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..79c7290e0dcb90a9df8fad99ce62182587f653af
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/child_process.d.ts
@@ -0,0 +1,1369 @@
+/**
+ * The `child_process` module provides the ability to spawn subprocesses in
+ * a manner that is similar, but not identical, to [`popen(3)`](http://man7.org/linux/man-pages/man3/popen.3.html). This capability
+ * is primarily provided by the {@link spawn} function:
+ *
+ * ```js
+ * const { spawn } = require('child_process');
+ * const ls = spawn('ls', ['-lh', '/usr']);
+ *
+ * ls.stdout.on('data', (data) => {
+ *   console.log(`stdout: ${data}`);
+ * });
+ *
+ * ls.stderr.on('data', (data) => {
+ *   console.error(`stderr: ${data}`);
+ * });
+ *
+ * ls.on('close', (code) => {
+ *   console.log(`child process exited with code ${code}`);
+ * });
+ * ```
+ *
+ * By default, pipes for `stdin`, `stdout`, and `stderr` are established between
+ * the parent Node.js process and the spawned subprocess. These pipes have
+ * limited (and platform-specific) capacity. If the subprocess writes to
+ * stdout in excess of that limit without the output being captured, the
+ * subprocess blocks waiting for the pipe buffer to accept more data. This is
+ * identical to the behavior of pipes in the shell. Use the `{ stdio: 'ignore' }`option if the output will not be consumed.
+ *
+ * The command lookup is performed using the `options.env.PATH` environment
+ * variable if `env` is in the `options` object. Otherwise, `process.env.PATH` is
+ * used. If `options.env` is set without `PATH`, lookup on Unix is performed
+ * on a default search path search of `/usr/bin:/bin` (see your operating system's
+ * manual for execvpe/execvp), on Windows the current processes environment
+ * variable `PATH` is used.
+ *
+ * On Windows, environment variables are case-insensitive. Node.js
+ * lexicographically sorts the `env` keys and uses the first one that
+ * case-insensitively matches. Only first (in lexicographic order) entry will be
+ * passed to the subprocess. This might lead to issues on Windows when passing
+ * objects to the `env` option that have multiple variants of the same key, such as`PATH` and `Path`.
+ *
+ * The {@link spawn} method spawns the child process asynchronously,
+ * without blocking the Node.js event loop. The {@link spawnSync} function provides equivalent functionality in a synchronous manner that blocks
+ * the event loop until the spawned process either exits or is terminated.
+ *
+ * For convenience, the `child_process` module provides a handful of synchronous
+ * and asynchronous alternatives to {@link spawn} and {@link spawnSync}. Each of these alternatives are implemented on
+ * top of {@link spawn} or {@link spawnSync}.
+ *
+ * * {@link exec}: spawns a shell and runs a command within that
+ * shell, passing the `stdout` and `stderr` to a callback function when
+ * complete.
+ * * {@link execFile}: similar to {@link exec} except
+ * that it spawns the command directly without first spawning a shell by
+ * default.
+ * * {@link fork}: spawns a new Node.js process and invokes a
+ * specified module with an IPC communication channel established that allows
+ * sending messages between parent and child.
+ * * {@link execSync}: a synchronous version of {@link exec} that will block the Node.js event loop.
+ * * {@link execFileSync}: a synchronous version of {@link execFile} that will block the Node.js event loop.
+ *
+ * For certain use cases, such as automating shell scripts, the `synchronous counterparts` may be more convenient. In many cases, however,
+ * the synchronous methods can have significant impact on performance due to
+ * stalling the event loop while spawned processes complete.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/child_process.js)
+ */
+declare module 'child_process' {
+    import { ObjectEncodingOptions } from 'node:fs';
+    import { EventEmitter, Abortable } from 'node:events';
+    import * as net from 'node:net';
+    import { Writable, Readable, Stream, Pipe } from 'node:stream';
+    import { URL } from 'node:url';
+    type Serializable = string | object | number | boolean | bigint;
+    type SendHandle = net.Socket | net.Server;
+    /**
+     * Instances of the `ChildProcess` represent spawned child processes.
+     *
+     * Instances of `ChildProcess` are not intended to be created directly. Rather,
+     * use the {@link spawn}, {@link exec},{@link execFile}, or {@link fork} methods to create
+     * instances of `ChildProcess`.
+     * @since v2.2.0
+     */
+    class ChildProcess extends EventEmitter {
+        /**
+         * A `Writable Stream` that represents the child process's `stdin`.
+         *
+         * If a child process waits to read all of its input, the child will not continue
+         * until this stream has been closed via `end()`.
+         *
+         * If the child was spawned with `stdio[0]` set to anything other than `'pipe'`,
+         * then this will be `null`.
+         *
+         * `subprocess.stdin` is an alias for `subprocess.stdio[0]`. Both properties will
+         * refer to the same value.
+         *
+         * The `subprocess.stdin` property can be `undefined` if the child process could
+         * not be successfully spawned.
+         * @since v0.1.90
+         */
+        stdin: Writable | null;
+        /**
+         * A `Readable Stream` that represents the child process's `stdout`.
+         *
+         * If the child was spawned with `stdio[1]` set to anything other than `'pipe'`,
+         * then this will be `null`.
+         *
+         * `subprocess.stdout` is an alias for `subprocess.stdio[1]`. Both properties will
+         * refer to the same value.
+         *
+         * ```js
+         * const { spawn } = require('child_process');
+         *
+         * const subprocess = spawn('ls');
+         *
+         * subprocess.stdout.on('data', (data) => {
+         *   console.log(`Received chunk ${data}`);
+         * });
+         * ```
+         *
+         * The `subprocess.stdout` property can be `null` if the child process could
+         * not be successfully spawned.
+         * @since v0.1.90
+         */
+        stdout: Readable | null;
+        /**
+         * A `Readable Stream` that represents the child process's `stderr`.
+         *
+         * If the child was spawned with `stdio[2]` set to anything other than `'pipe'`,
+         * then this will be `null`.
+         *
+         * `subprocess.stderr` is an alias for `subprocess.stdio[2]`. Both properties will
+         * refer to the same value.
+         *
+         * The `subprocess.stderr` property can be `null` if the child process could
+         * not be successfully spawned.
+         * @since v0.1.90
+         */
+        stderr: Readable | null;
+        /**
+         * The `subprocess.channel` property is a reference to the child's IPC channel. If
+         * no IPC channel currently exists, this property is `undefined`.
+         * @since v7.1.0
+         */
+        readonly channel?: Pipe | null | undefined;
+        /**
+         * A sparse array of pipes to the child process, corresponding with positions in
+         * the `stdio` option passed to {@link spawn} that have been set
+         * to the value `'pipe'`. `subprocess.stdio[0]`, `subprocess.stdio[1]`, and`subprocess.stdio[2]` are also available as `subprocess.stdin`,`subprocess.stdout`, and `subprocess.stderr`,
+         * respectively.
+         *
+         * In the following example, only the child's fd `1` (stdout) is configured as a
+         * pipe, so only the parent's `subprocess.stdio[1]` is a stream, all other values
+         * in the array are `null`.
+         *
+         * ```js
+         * const assert = require('assert');
+         * const fs = require('fs');
+         * const child_process = require('child_process');
+         *
+         * const subprocess = child_process.spawn('ls', {
+         *   stdio: [
+         *     0, // Use parent's stdin for child.
+         *     'pipe', // Pipe child's stdout to parent.
+         *     fs.openSync('err.out', 'w'), // Direct child's stderr to a file.
+         *   ]
+         * });
+         *
+         * assert.strictEqual(subprocess.stdio[0], null);
+         * assert.strictEqual(subprocess.stdio[0], subprocess.stdin);
+         *
+         * assert(subprocess.stdout);
+         * assert.strictEqual(subprocess.stdio[1], subprocess.stdout);
+         *
+         * assert.strictEqual(subprocess.stdio[2], null);
+         * assert.strictEqual(subprocess.stdio[2], subprocess.stderr);
+         * ```
+         *
+         * The `subprocess.stdio` property can be `undefined` if the child process could
+         * not be successfully spawned.
+         * @since v0.7.10
+         */
+        readonly stdio: [
+            Writable | null,
+            // stdin
+            Readable | null,
+            // stdout
+            Readable | null,
+            // stderr
+            Readable | Writable | null | undefined,
+            // extra
+            Readable | Writable | null | undefined // extra
+        ];
+        /**
+         * The `subprocess.killed` property indicates whether the child process
+         * successfully received a signal from `subprocess.kill()`. The `killed` property
+         * does not indicate that the child process has been terminated.
+         * @since v0.5.10
+         */
+        readonly killed: boolean;
+        /**
+         * Returns the process identifier (PID) of the child process. If the child process
+         * fails to spawn due to errors, then the value is `undefined` and `error` is
+         * emitted.
+         *
+         * ```js
+         * const { spawn } = require('child_process');
+         * const grep = spawn('grep', ['ssh']);
+         *
+         * console.log(`Spawned child pid: ${grep.pid}`);
+         * grep.stdin.end();
+         * ```
+         * @since v0.1.90
+         */
+        readonly pid?: number | undefined;
+        /**
+         * The `subprocess.connected` property indicates whether it is still possible to
+         * send and receive messages from a child process. When `subprocess.connected` is`false`, it is no longer possible to send or receive messages.
+         * @since v0.7.2
+         */
+        readonly connected: boolean;
+        /**
+         * The `subprocess.exitCode` property indicates the exit code of the child process.
+         * If the child process is still running, the field will be `null`.
+         */
+        readonly exitCode: number | null;
+        /**
+         * The `subprocess.signalCode` property indicates the signal received by
+         * the child process if any, else `null`.
+         */
+        readonly signalCode: NodeJS.Signals | null;
+        /**
+         * The `subprocess.spawnargs` property represents the full list of command-line
+         * arguments the child process was launched with.
+         */
+        readonly spawnargs: string[];
+        /**
+         * The `subprocess.spawnfile` property indicates the executable file name of
+         * the child process that is launched.
+         *
+         * For {@link fork}, its value will be equal to `process.execPath`.
+         * For {@link spawn}, its value will be the name of
+         * the executable file.
+         * For {@link exec},  its value will be the name of the shell
+         * in which the child process is launched.
+         */
+        readonly spawnfile: string;
+        /**
+         * The `subprocess.kill()` method sends a signal to the child process. If no
+         * argument is given, the process will be sent the `'SIGTERM'` signal. See [`signal(7)`](http://man7.org/linux/man-pages/man7/signal.7.html) for a list of available signals. This function
+         * returns `true` if [`kill(2)`](http://man7.org/linux/man-pages/man2/kill.2.html) succeeds, and `false` otherwise.
+         *
+         * ```js
+         * const { spawn } = require('child_process');
+         * const grep = spawn('grep', ['ssh']);
+         *
+         * grep.on('close', (code, signal) => {
+         *   console.log(
+         *     `child process terminated due to receipt of signal ${signal}`);
+         * });
+         *
+         * // Send SIGHUP to process.
+         * grep.kill('SIGHUP');
+         * ```
+         *
+         * The `ChildProcess` object may emit an `'error'` event if the signal
+         * cannot be delivered. Sending a signal to a child process that has already exited
+         * is not an error but may have unforeseen consequences. Specifically, if the
+         * process identifier (PID) has been reassigned to another process, the signal will
+         * be delivered to that process instead which can have unexpected results.
+         *
+         * While the function is called `kill`, the signal delivered to the child process
+         * may not actually terminate the process.
+         *
+         * See [`kill(2)`](http://man7.org/linux/man-pages/man2/kill.2.html) for reference.
+         *
+         * On Windows, where POSIX signals do not exist, the `signal` argument will be
+         * ignored, and the process will be killed forcefully and abruptly (similar to`'SIGKILL'`).
+         * See `Signal Events` for more details.
+         *
+         * On Linux, child processes of child processes will not be terminated
+         * when attempting to kill their parent. This is likely to happen when running a
+         * new process in a shell or with the use of the `shell` option of `ChildProcess`:
+         *
+         * ```js
+         * 'use strict';
+         * const { spawn } = require('child_process');
+         *
+         * const subprocess = spawn(
+         *   'sh',
+         *   [
+         *     '-c',
+         *     `node -e "setInterval(() => {
+         *       console.log(process.pid, 'is alive')
+         *     }, 500);"`,
+         *   ], {
+         *     stdio: ['inherit', 'inherit', 'inherit']
+         *   }
+         * );
+         *
+         * setTimeout(() => {
+         *   subprocess.kill(); // Does not terminate the Node.js process in the shell.
+         * }, 2000);
+         * ```
+         * @since v0.1.90
+         */
+        kill(signal?: NodeJS.Signals | number): boolean;
+        /**
+         * When an IPC channel has been established between the parent and child (
+         * i.e. when using {@link fork}), the `subprocess.send()` method can
+         * be used to send messages to the child process. When the child process is a
+         * Node.js instance, these messages can be received via the `'message'` event.
+         *
+         * The message goes through serialization and parsing. The resulting
+         * message might not be the same as what is originally sent.
+         *
+         * For example, in the parent script:
+         *
+         * ```js
+         * const cp = require('child_process');
+         * const n = cp.fork(`${__dirname}/sub.js`);
+         *
+         * n.on('message', (m) => {
+         *   console.log('PARENT got message:', m);
+         * });
+         *
+         * // Causes the child to print: CHILD got message: { hello: 'world' }
+         * n.send({ hello: 'world' });
+         * ```
+         *
+         * And then the child script, `'sub.js'` might look like this:
+         *
+         * ```js
+         * process.on('message', (m) => {
+         *   console.log('CHILD got message:', m);
+         * });
+         *
+         * // Causes the parent to print: PARENT got message: { foo: 'bar', baz: null }
+         * process.send({ foo: 'bar', baz: NaN });
+         * ```
+         *
+         * Child Node.js processes will have a `process.send()` method of their own
+         * that allows the child to send messages back to the parent.
+         *
+         * There is a special case when sending a `{cmd: 'NODE_foo'}` message. Messages
+         * containing a `NODE_` prefix in the `cmd` property are reserved for use within
+         * Node.js core and will not be emitted in the child's `'message'` event. Rather, such messages are emitted using the`'internalMessage'` event and are consumed internally by Node.js.
+         * Applications should avoid using such messages or listening for`'internalMessage'` events as it is subject to change without notice.
+         *
+         * The optional `sendHandle` argument that may be passed to `subprocess.send()` is
+         * for passing a TCP server or socket object to the child process. The child will
+         * receive the object as the second argument passed to the callback function
+         * registered on the `'message'` event. Any data that is received
+         * and buffered in the socket will not be sent to the child.
+         *
+         * The optional `callback` is a function that is invoked after the message is
+         * sent but before the child may have received it. The function is called with a
+         * single argument: `null` on success, or an `Error` object on failure.
+         *
+         * If no `callback` function is provided and the message cannot be sent, an`'error'` event will be emitted by the `ChildProcess` object. This can
+         * happen, for instance, when the child process has already exited.
+         *
+         * `subprocess.send()` will return `false` if the channel has closed or when the
+         * backlog of unsent messages exceeds a threshold that makes it unwise to send
+         * more. Otherwise, the method returns `true`. The `callback` function can be
+         * used to implement flow control.
+         *
+         * #### Example: sending a server object
+         *
+         * The `sendHandle` argument can be used, for instance, to pass the handle of
+         * a TCP server object to the child process as illustrated in the example below:
+         *
+         * ```js
+         * const subprocess = require('child_process').fork('subprocess.js');
+         *
+         * // Open up the server object and send the handle.
+         * const server = require('net').createServer();
+         * server.on('connection', (socket) => {
+         *   socket.end('handled by parent');
+         * });
+         * server.listen(1337, () => {
+         *   subprocess.send('server', server);
+         * });
+         * ```
+         *
+         * The child would then receive the server object as:
+         *
+         * ```js
+         * process.on('message', (m, server) => {
+         *   if (m === 'server') {
+         *     server.on('connection', (socket) => {
+         *       socket.end('handled by child');
+         *     });
+         *   }
+         * });
+         * ```
+         *
+         * Once the server is now shared between the parent and child, some connections
+         * can be handled by the parent and some by the child.
+         *
+         * While the example above uses a server created using the `net` module, `dgram`module servers use exactly the same workflow with the exceptions of listening on
+         * a `'message'` event instead of `'connection'` and using `server.bind()` instead
+         * of `server.listen()`. This is, however, currently only supported on Unix
+         * platforms.
+         *
+         * #### Example: sending a socket object
+         *
+         * Similarly, the `sendHandler` argument can be used to pass the handle of a
+         * socket to the child process. The example below spawns two children that each
+         * handle connections with "normal" or "special" priority:
+         *
+         * ```js
+         * const { fork } = require('child_process');
+         * const normal = fork('subprocess.js', ['normal']);
+         * const special = fork('subprocess.js', ['special']);
+         *
+         * // Open up the server and send sockets to child. Use pauseOnConnect to prevent
+         * // the sockets from being read before they are sent to the child process.
+         * const server = require('net').createServer({ pauseOnConnect: true });
+         * server.on('connection', (socket) => {
+         *
+         *   // If this is special priority...
+         *   if (socket.remoteAddress === '74.125.127.100') {
+         *     special.send('socket', socket);
+         *     return;
+         *   }
+         *   // This is normal priority.
+         *   normal.send('socket', socket);
+         * });
+         * server.listen(1337);
+         * ```
+         *
+         * The `subprocess.js` would receive the socket handle as the second argument
+         * passed to the event callback function:
+         *
+         * ```js
+         * process.on('message', (m, socket) => {
+         *   if (m === 'socket') {
+         *     if (socket) {
+         *       // Check that the client socket exists.
+         *       // It is possible for the socket to be closed between the time it is
+         *       // sent and the time it is received in the child process.
+         *       socket.end(`Request handled with ${process.argv[2]} priority`);
+         *     }
+         *   }
+         * });
+         * ```
+         *
+         * Do not use `.maxConnections` on a socket that has been passed to a subprocess.
+         * The parent cannot track when the socket is destroyed.
+         *
+         * Any `'message'` handlers in the subprocess should verify that `socket` exists,
+         * as the connection may have been closed during the time it takes to send the
+         * connection to the child.
+         * @since v0.5.9
+         * @param options The `options` argument, if present, is an object used to parameterize the sending of certain types of handles. `options` supports the following properties:
+         */
+        send(message: Serializable, callback?: (error: Error | null) => void): boolean;
+        send(message: Serializable, sendHandle?: SendHandle, callback?: (error: Error | null) => void): boolean;
+        send(message: Serializable, sendHandle?: SendHandle, options?: MessageOptions, callback?: (error: Error | null) => void): boolean;
+        /**
+         * Closes the IPC channel between parent and child, allowing the child to exit
+         * gracefully once there are no other connections keeping it alive. After calling
+         * this method the `subprocess.connected` and `process.connected` properties in
+         * both the parent and child (respectively) will be set to `false`, and it will be
+         * no longer possible to pass messages between the processes.
+         *
+         * The `'disconnect'` event will be emitted when there are no messages in the
+         * process of being received. This will most often be triggered immediately after
+         * calling `subprocess.disconnect()`.
+         *
+         * When the child process is a Node.js instance (e.g. spawned using {@link fork}), the `process.disconnect()` method can be invoked
+         * within the child process to close the IPC channel as well.
+         * @since v0.7.2
+         */
+        disconnect(): void;
+        /**
+         * By default, the parent will wait for the detached child to exit. To prevent the
+         * parent from waiting for a given `subprocess` to exit, use the`subprocess.unref()` method. Doing so will cause the parent's event loop to not
+         * include the child in its reference count, allowing the parent to exit
+         * independently of the child, unless there is an established IPC channel between
+         * the child and the parent.
+         *
+         * ```js
+         * const { spawn } = require('child_process');
+         *
+         * const subprocess = spawn(process.argv[0], ['child_program.js'], {
+         *   detached: true,
+         *   stdio: 'ignore'
+         * });
+         *
+         * subprocess.unref();
+         * ```
+         * @since v0.7.10
+         */
+        unref(): void;
+        /**
+         * Calling `subprocess.ref()` after making a call to `subprocess.unref()` will
+         * restore the removed reference count for the child process, forcing the parent
+         * to wait for the child to exit before exiting itself.
+         *
+         * ```js
+         * const { spawn } = require('child_process');
+         *
+         * const subprocess = spawn(process.argv[0], ['child_program.js'], {
+         *   detached: true,
+         *   stdio: 'ignore'
+         * });
+         *
+         * subprocess.unref();
+         * subprocess.ref();
+         * ```
+         * @since v0.7.10
+         */
+        ref(): void;
+        /**
+         * events.EventEmitter
+         * 1. close
+         * 2. disconnect
+         * 3. error
+         * 4. exit
+         * 5. message
+         * 6. spawn
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        addListener(event: 'disconnect', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'exit', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        addListener(event: 'message', listener: (message: Serializable, sendHandle: SendHandle) => void): this;
+        addListener(event: 'spawn', listener: () => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'close', code: number | null, signal: NodeJS.Signals | null): boolean;
+        emit(event: 'disconnect'): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'exit', code: number | null, signal: NodeJS.Signals | null): boolean;
+        emit(event: 'message', message: Serializable, sendHandle: SendHandle): boolean;
+        emit(event: 'spawn', listener: () => void): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        on(event: 'disconnect', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'exit', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        on(event: 'message', listener: (message: Serializable, sendHandle: SendHandle) => void): this;
+        on(event: 'spawn', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        once(event: 'disconnect', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'exit', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        once(event: 'message', listener: (message: Serializable, sendHandle: SendHandle) => void): this;
+        once(event: 'spawn', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        prependListener(event: 'disconnect', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'exit', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        prependListener(event: 'message', listener: (message: Serializable, sendHandle: SendHandle) => void): this;
+        prependListener(event: 'spawn', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        prependOnceListener(event: 'disconnect', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'exit', listener: (code: number | null, signal: NodeJS.Signals | null) => void): this;
+        prependOnceListener(event: 'message', listener: (message: Serializable, sendHandle: SendHandle) => void): this;
+        prependOnceListener(event: 'spawn', listener: () => void): this;
+    }
+    // return this object when stdio option is undefined or not specified
+    interface ChildProcessWithoutNullStreams extends ChildProcess {
+        stdin: Writable;
+        stdout: Readable;
+        stderr: Readable;
+        readonly stdio: [
+            Writable,
+            Readable,
+            Readable,
+            // stderr
+            Readable | Writable | null | undefined,
+            // extra, no modification
+            Readable | Writable | null | undefined // extra, no modification
+        ];
+    }
+    // return this object when stdio option is a tuple of 3
+    interface ChildProcessByStdio<I extends null | Writable, O extends null | Readable, E extends null | Readable> extends ChildProcess {
+        stdin: I;
+        stdout: O;
+        stderr: E;
+        readonly stdio: [
+            I,
+            O,
+            E,
+            Readable | Writable | null | undefined,
+            // extra, no modification
+            Readable | Writable | null | undefined // extra, no modification
+        ];
+    }
+    interface MessageOptions {
+        keepOpen?: boolean | undefined;
+    }
+    type IOType = 'overlapped' | 'pipe' | 'ignore' | 'inherit';
+    type StdioOptions = IOType | Array<IOType | 'ipc' | Stream | number | null | undefined>;
+    type SerializationType = 'json' | 'advanced';
+    interface MessagingOptions extends Abortable {
+        /**
+         * Specify the kind of serialization used for sending messages between processes.
+         * @default 'json'
+         */
+        serialization?: SerializationType | undefined;
+        /**
+         * The signal value to be used when the spawned process will be killed by the abort signal.
+         * @default 'SIGTERM'
+         */
+        killSignal?: NodeJS.Signals | number | undefined;
+        /**
+         * In milliseconds the maximum amount of time the process is allowed to run.
+         */
+        timeout?: number | undefined;
+    }
+    interface ProcessEnvOptions {
+        uid?: number | undefined;
+        gid?: number | undefined;
+        cwd?: string | URL | undefined;
+        env?: NodeJS.ProcessEnv | undefined;
+    }
+    interface CommonOptions extends ProcessEnvOptions {
+        /**
+         * @default true
+         */
+        windowsHide?: boolean | undefined;
+        /**
+         * @default 0
+         */
+        timeout?: number | undefined;
+    }
+    interface CommonSpawnOptions extends CommonOptions, MessagingOptions, Abortable {
+        argv0?: string | undefined;
+        stdio?: StdioOptions | undefined;
+        shell?: boolean | string | undefined;
+        windowsVerbatimArguments?: boolean | undefined;
+    }
+    interface SpawnOptions extends CommonSpawnOptions {
+        detached?: boolean | undefined;
+    }
+    interface SpawnOptionsWithoutStdio extends SpawnOptions {
+        stdio?: StdioPipeNamed | StdioPipe[] | undefined;
+    }
+    type StdioNull = 'inherit' | 'ignore' | Stream;
+    type StdioPipeNamed = 'pipe' | 'overlapped';
+    type StdioPipe = undefined | null | StdioPipeNamed;
+    interface SpawnOptionsWithStdioTuple<Stdin extends StdioNull | StdioPipe, Stdout extends StdioNull | StdioPipe, Stderr extends StdioNull | StdioPipe> extends SpawnOptions {
+        stdio: [Stdin, Stdout, Stderr];
+    }
+    /**
+     * The `child_process.spawn()` method spawns a new process using the given`command`, with command-line arguments in `args`. If omitted, `args` defaults
+     * to an empty array.
+     *
+     * **If the `shell` option is enabled, do not pass unsanitized user input to this**
+     * **function. Any input containing shell metacharacters may be used to trigger**
+     * **arbitrary command execution.**
+     *
+     * A third argument may be used to specify additional options, with these defaults:
+     *
+     * ```js
+     * const defaults = {
+     *   cwd: undefined,
+     *   env: process.env
+     * };
+     * ```
+     *
+     * Use `cwd` to specify the working directory from which the process is spawned.
+     * If not given, the default is to inherit the current working directory. If given,
+     * but the path does not exist, the child process emits an `ENOENT` error
+     * and exits immediately. `ENOENT` is also emitted when the command
+     * does not exist.
+     *
+     * Use `env` to specify environment variables that will be visible to the new
+     * process, the default is `process.env`.
+     *
+     * `undefined` values in `env` will be ignored.
+     *
+     * Example of running `ls -lh /usr`, capturing `stdout`, `stderr`, and the
+     * exit code:
+     *
+     * ```js
+     * const { spawn } = require('child_process');
+     * const ls = spawn('ls', ['-lh', '/usr']);
+     *
+     * ls.stdout.on('data', (data) => {
+     *   console.log(`stdout: ${data}`);
+     * });
+     *
+     * ls.stderr.on('data', (data) => {
+     *   console.error(`stderr: ${data}`);
+     * });
+     *
+     * ls.on('close', (code) => {
+     *   console.log(`child process exited with code ${code}`);
+     * });
+     * ```
+     *
+     * Example: A very elaborate way to run `ps ax | grep ssh`
+     *
+     * ```js
+     * const { spawn } = require('child_process');
+     * const ps = spawn('ps', ['ax']);
+     * const grep = spawn('grep', ['ssh']);
+     *
+     * ps.stdout.on('data', (data) => {
+     *   grep.stdin.write(data);
+     * });
+     *
+     * ps.stderr.on('data', (data) => {
+     *   console.error(`ps stderr: ${data}`);
+     * });
+     *
+     * ps.on('close', (code) => {
+     *   if (code !== 0) {
+     *     console.log(`ps process exited with code ${code}`);
+     *   }
+     *   grep.stdin.end();
+     * });
+     *
+     * grep.stdout.on('data', (data) => {
+     *   console.log(data.toString());
+     * });
+     *
+     * grep.stderr.on('data', (data) => {
+     *   console.error(`grep stderr: ${data}`);
+     * });
+     *
+     * grep.on('close', (code) => {
+     *   if (code !== 0) {
+     *     console.log(`grep process exited with code ${code}`);
+     *   }
+     * });
+     * ```
+     *
+     * Example of checking for failed `spawn`:
+     *
+     * ```js
+     * const { spawn } = require('child_process');
+     * const subprocess = spawn('bad_command');
+     *
+     * subprocess.on('error', (err) => {
+     *   console.error('Failed to start subprocess.');
+     * });
+     * ```
+     *
+     * Certain platforms (macOS, Linux) will use the value of `argv[0]` for the process
+     * title while others (Windows, SunOS) will use `command`.
+     *
+     * Node.js currently overwrites `argv[0]` with `process.execPath` on startup, so`process.argv[0]` in a Node.js child process will not match the `argv0`parameter passed to `spawn` from the parent,
+     * retrieve it with the`process.argv0` property instead.
+     *
+     * If the `signal` option is enabled, calling `.abort()` on the corresponding`AbortController` is similar to calling `.kill()` on the child process except
+     * the error passed to the callback will be an `AbortError`:
+     *
+     * ```js
+     * const { spawn } = require('child_process');
+     * const controller = new AbortController();
+     * const { signal } = controller;
+     * const grep = spawn('grep', ['ssh'], { signal });
+     * grep.on('error', (err) => {
+     *   // This will be called with err being an AbortError if the controller aborts
+     * });
+     * controller.abort(); // Stops the child process
+     * ```
+     * @since v0.1.90
+     * @param command The command to run.
+     * @param args List of string arguments.
+     */
+    function spawn(command: string, options?: SpawnOptionsWithoutStdio): ChildProcessWithoutNullStreams;
+    function spawn(command: string, options: SpawnOptionsWithStdioTuple<StdioPipe, StdioPipe, StdioPipe>): ChildProcessByStdio<Writable, Readable, Readable>;
+    function spawn(command: string, options: SpawnOptionsWithStdioTuple<StdioPipe, StdioPipe, StdioNull>): ChildProcessByStdio<Writable, Readable, null>;
+    function spawn(command: string, options: SpawnOptionsWithStdioTuple<StdioPipe, StdioNull, StdioPipe>): ChildProcessByStdio<Writable, null, Readable>;
+    function spawn(command: string, options: SpawnOptionsWithStdioTuple<StdioNull, StdioPipe, StdioPipe>): ChildProcessByStdio<null, Readable, Readable>;
+    function spawn(command: string, options: SpawnOptionsWithStdioTuple<StdioPipe, StdioNull, StdioNull>): ChildProcessByStdio<Writable, null, null>;
+    function spawn(command: string, options: SpawnOptionsWithStdioTuple<StdioNull, StdioPipe, StdioNull>): ChildProcessByStdio<null, Readable, null>;
+    function spawn(command: string, options: SpawnOptionsWithStdioTuple<StdioNull, StdioNull, StdioPipe>): ChildProcessByStdio<null, null, Readable>;
+    function spawn(command: string, options: SpawnOptionsWithStdioTuple<StdioNull, StdioNull, StdioNull>): ChildProcessByStdio<null, null, null>;
+    function spawn(command: string, options: SpawnOptions): ChildProcess;
+    // overloads of spawn with 'args'
+    function spawn(command: string, args?: ReadonlyArray<string>, options?: SpawnOptionsWithoutStdio): ChildProcessWithoutNullStreams;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptionsWithStdioTuple<StdioPipe, StdioPipe, StdioPipe>): ChildProcessByStdio<Writable, Readable, Readable>;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptionsWithStdioTuple<StdioPipe, StdioPipe, StdioNull>): ChildProcessByStdio<Writable, Readable, null>;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptionsWithStdioTuple<StdioPipe, StdioNull, StdioPipe>): ChildProcessByStdio<Writable, null, Readable>;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptionsWithStdioTuple<StdioNull, StdioPipe, StdioPipe>): ChildProcessByStdio<null, Readable, Readable>;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptionsWithStdioTuple<StdioPipe, StdioNull, StdioNull>): ChildProcessByStdio<Writable, null, null>;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptionsWithStdioTuple<StdioNull, StdioPipe, StdioNull>): ChildProcessByStdio<null, Readable, null>;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptionsWithStdioTuple<StdioNull, StdioNull, StdioPipe>): ChildProcessByStdio<null, null, Readable>;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptionsWithStdioTuple<StdioNull, StdioNull, StdioNull>): ChildProcessByStdio<null, null, null>;
+    function spawn(command: string, args: ReadonlyArray<string>, options: SpawnOptions): ChildProcess;
+    interface ExecOptions extends CommonOptions {
+        shell?: string | undefined;
+        signal?: AbortSignal | undefined;
+        maxBuffer?: number | undefined;
+        killSignal?: NodeJS.Signals | number | undefined;
+    }
+    interface ExecOptionsWithStringEncoding extends ExecOptions {
+        encoding: BufferEncoding;
+    }
+    interface ExecOptionsWithBufferEncoding extends ExecOptions {
+        encoding: BufferEncoding | null; // specify `null`.
+    }
+    interface ExecException extends Error {
+        cmd?: string | undefined;
+        killed?: boolean | undefined;
+        code?: number | undefined;
+        signal?: NodeJS.Signals | undefined;
+    }
+    /**
+     * Spawns a shell then executes the `command` within that shell, buffering any
+     * generated output. The `command` string passed to the exec function is processed
+     * directly by the shell and special characters (vary based on [shell](https://en.wikipedia.org/wiki/List_of_command-line_interpreters))
+     * need to be dealt with accordingly:
+     *
+     * ```js
+     * const { exec } = require('child_process');
+     *
+     * exec('"/path/to/test file/test.sh" arg1 arg2');
+     * // Double quotes are used so that the space in the path is not interpreted as
+     * // a delimiter of multiple arguments.
+     *
+     * exec('echo "The \\$HOME variable is $HOME"');
+     * // The $HOME variable is escaped in the first instance, but not in the second.
+     * ```
+     *
+     * **Never pass unsanitized user input to this function. Any input containing shell**
+     * **metacharacters may be used to trigger arbitrary command execution.**
+     *
+     * If a `callback` function is provided, it is called with the arguments`(error, stdout, stderr)`. On success, `error` will be `null`. On error,`error` will be an instance of `Error`. The
+     * `error.code` property will be
+     * the exit code of the process. By convention, any exit code other than `0`indicates an error. `error.signal` will be the signal that terminated the
+     * process.
+     *
+     * The `stdout` and `stderr` arguments passed to the callback will contain the
+     * stdout and stderr output of the child process. By default, Node.js will decode
+     * the output as UTF-8 and pass strings to the callback. The `encoding` option
+     * can be used to specify the character encoding used to decode the stdout and
+     * stderr output. If `encoding` is `'buffer'`, or an unrecognized character
+     * encoding, `Buffer` objects will be passed to the callback instead.
+     *
+     * ```js
+     * const { exec } = require('child_process');
+     * exec('cat *.js missing_file | wc -l', (error, stdout, stderr) => {
+     *   if (error) {
+     *     console.error(`exec error: ${error}`);
+     *     return;
+     *   }
+     *   console.log(`stdout: ${stdout}`);
+     *   console.error(`stderr: ${stderr}`);
+     * });
+     * ```
+     *
+     * If `timeout` is greater than `0`, the parent will send the signal
+     * identified by the `killSignal` property (the default is `'SIGTERM'`) if the
+     * child runs longer than `timeout` milliseconds.
+     *
+     * Unlike the [`exec(3)`](http://man7.org/linux/man-pages/man3/exec.3.html) POSIX system call, `child_process.exec()` does not replace
+     * the existing process and uses a shell to execute the command.
+     *
+     * If this method is invoked as its `util.promisify()` ed version, it returns
+     * a `Promise` for an `Object` with `stdout` and `stderr` properties. The returned`ChildProcess` instance is attached to the `Promise` as a `child` property. In
+     * case of an error (including any error resulting in an exit code other than 0), a
+     * rejected promise is returned, with the same `error` object given in the
+     * callback, but with two additional properties `stdout` and `stderr`.
+     *
+     * ```js
+     * const util = require('util');
+     * const exec = util.promisify(require('child_process').exec);
+     *
+     * async function lsExample() {
+     *   const { stdout, stderr } = await exec('ls');
+     *   console.log('stdout:', stdout);
+     *   console.error('stderr:', stderr);
+     * }
+     * lsExample();
+     * ```
+     *
+     * If the `signal` option is enabled, calling `.abort()` on the corresponding`AbortController` is similar to calling `.kill()` on the child process except
+     * the error passed to the callback will be an `AbortError`:
+     *
+     * ```js
+     * const { exec } = require('child_process');
+     * const controller = new AbortController();
+     * const { signal } = controller;
+     * const child = exec('grep ssh', { signal }, (error) => {
+     *   console.log(error); // an AbortError
+     * });
+     * controller.abort();
+     * ```
+     * @since v0.1.90
+     * @param command The command to run, with space-separated arguments.
+     * @param callback called with the output when process terminates.
+     */
+    function exec(command: string, callback?: (error: ExecException | null, stdout: string, stderr: string) => void): ChildProcess;
+    // `options` with `"buffer"` or `null` for `encoding` means stdout/stderr are definitely `Buffer`.
+    function exec(
+        command: string,
+        options: {
+            encoding: 'buffer' | null;
+        } & ExecOptions,
+        callback?: (error: ExecException | null, stdout: Buffer, stderr: Buffer) => void
+    ): ChildProcess;
+    // `options` with well known `encoding` means stdout/stderr are definitely `string`.
+    function exec(
+        command: string,
+        options: {
+            encoding: BufferEncoding;
+        } & ExecOptions,
+        callback?: (error: ExecException | null, stdout: string, stderr: string) => void
+    ): ChildProcess;
+    // `options` with an `encoding` whose type is `string` means stdout/stderr could either be `Buffer` or `string`.
+    // There is no guarantee the `encoding` is unknown as `string` is a superset of `BufferEncoding`.
+    function exec(
+        command: string,
+        options: {
+            encoding: BufferEncoding;
+        } & ExecOptions,
+        callback?: (error: ExecException | null, stdout: string | Buffer, stderr: string | Buffer) => void
+    ): ChildProcess;
+    // `options` without an `encoding` means stdout/stderr are definitely `string`.
+    function exec(command: string, options: ExecOptions, callback?: (error: ExecException | null, stdout: string, stderr: string) => void): ChildProcess;
+    // fallback if nothing else matches. Worst case is always `string | Buffer`.
+    function exec(
+        command: string,
+        options: (ObjectEncodingOptions & ExecOptions) | undefined | null,
+        callback?: (error: ExecException | null, stdout: string | Buffer, stderr: string | Buffer) => void
+    ): ChildProcess;
+    interface PromiseWithChild<T> extends Promise<T> {
+        child: ChildProcess;
+    }
+    namespace exec {
+        function __promisify__(command: string): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            command: string,
+            options: {
+                encoding: 'buffer' | null;
+            } & ExecOptions
+        ): PromiseWithChild<{
+            stdout: Buffer;
+            stderr: Buffer;
+        }>;
+        function __promisify__(
+            command: string,
+            options: {
+                encoding: BufferEncoding;
+            } & ExecOptions
+        ): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            command: string,
+            options: ExecOptions
+        ): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            command: string,
+            options?: (ObjectEncodingOptions & ExecOptions) | null
+        ): PromiseWithChild<{
+            stdout: string | Buffer;
+            stderr: string | Buffer;
+        }>;
+    }
+    interface ExecFileOptions extends CommonOptions, Abortable {
+        maxBuffer?: number | undefined;
+        killSignal?: NodeJS.Signals | number | undefined;
+        windowsVerbatimArguments?: boolean | undefined;
+        shell?: boolean | string | undefined;
+        signal?: AbortSignal | undefined;
+    }
+    interface ExecFileOptionsWithStringEncoding extends ExecFileOptions {
+        encoding: BufferEncoding;
+    }
+    interface ExecFileOptionsWithBufferEncoding extends ExecFileOptions {
+        encoding: 'buffer' | null;
+    }
+    interface ExecFileOptionsWithOtherEncoding extends ExecFileOptions {
+        encoding: BufferEncoding;
+    }
+    type ExecFileException = ExecException & NodeJS.ErrnoException;
+    /**
+     * The `child_process.execFile()` function is similar to {@link exec} except that it does not spawn a shell by default. Rather, the specified
+     * executable `file` is spawned directly as a new process making it slightly more
+     * efficient than {@link exec}.
+     *
+     * The same options as {@link exec} are supported. Since a shell is
+     * not spawned, behaviors such as I/O redirection and file globbing are not
+     * supported.
+     *
+     * ```js
+     * const { execFile } = require('child_process');
+     * const child = execFile('node', ['--version'], (error, stdout, stderr) => {
+     *   if (error) {
+     *     throw error;
+     *   }
+     *   console.log(stdout);
+     * });
+     * ```
+     *
+     * The `stdout` and `stderr` arguments passed to the callback will contain the
+     * stdout and stderr output of the child process. By default, Node.js will decode
+     * the output as UTF-8 and pass strings to the callback. The `encoding` option
+     * can be used to specify the character encoding used to decode the stdout and
+     * stderr output. If `encoding` is `'buffer'`, or an unrecognized character
+     * encoding, `Buffer` objects will be passed to the callback instead.
+     *
+     * If this method is invoked as its `util.promisify()` ed version, it returns
+     * a `Promise` for an `Object` with `stdout` and `stderr` properties. The returned`ChildProcess` instance is attached to the `Promise` as a `child` property. In
+     * case of an error (including any error resulting in an exit code other than 0), a
+     * rejected promise is returned, with the same `error` object given in the
+     * callback, but with two additional properties `stdout` and `stderr`.
+     *
+     * ```js
+     * const util = require('util');
+     * const execFile = util.promisify(require('child_process').execFile);
+     * async function getVersion() {
+     *   const { stdout } = await execFile('node', ['--version']);
+     *   console.log(stdout);
+     * }
+     * getVersion();
+     * ```
+     *
+     * **If the `shell` option is enabled, do not pass unsanitized user input to this**
+     * **function. Any input containing shell metacharacters may be used to trigger**
+     * **arbitrary command execution.**
+     *
+     * If the `signal` option is enabled, calling `.abort()` on the corresponding`AbortController` is similar to calling `.kill()` on the child process except
+     * the error passed to the callback will be an `AbortError`:
+     *
+     * ```js
+     * const { execFile } = require('child_process');
+     * const controller = new AbortController();
+     * const { signal } = controller;
+     * const child = execFile('node', ['--version'], { signal }, (error) => {
+     *   console.log(error); // an AbortError
+     * });
+     * controller.abort();
+     * ```
+     * @since v0.1.91
+     * @param file The name or path of the executable file to run.
+     * @param args List of string arguments.
+     * @param callback Called with the output when process terminates.
+     */
+    function execFile(file: string): ChildProcess;
+    function execFile(file: string, options: (ObjectEncodingOptions & ExecFileOptions) | undefined | null): ChildProcess;
+    function execFile(file: string, args?: ReadonlyArray<string> | null): ChildProcess;
+    function execFile(file: string, args: ReadonlyArray<string> | undefined | null, options: (ObjectEncodingOptions & ExecFileOptions) | undefined | null): ChildProcess;
+    // no `options` definitely means stdout/stderr are `string`.
+    function execFile(file: string, callback: (error: ExecFileException | null, stdout: string, stderr: string) => void): ChildProcess;
+    function execFile(file: string, args: ReadonlyArray<string> | undefined | null, callback: (error: ExecFileException | null, stdout: string, stderr: string) => void): ChildProcess;
+    // `options` with `"buffer"` or `null` for `encoding` means stdout/stderr are definitely `Buffer`.
+    function execFile(file: string, options: ExecFileOptionsWithBufferEncoding, callback: (error: ExecFileException | null, stdout: Buffer, stderr: Buffer) => void): ChildProcess;
+    function execFile(
+        file: string,
+        args: ReadonlyArray<string> | undefined | null,
+        options: ExecFileOptionsWithBufferEncoding,
+        callback: (error: ExecFileException | null, stdout: Buffer, stderr: Buffer) => void
+    ): ChildProcess;
+    // `options` with well known `encoding` means stdout/stderr are definitely `string`.
+    function execFile(file: string, options: ExecFileOptionsWithStringEncoding, callback: (error: ExecFileException | null, stdout: string, stderr: string) => void): ChildProcess;
+    function execFile(
+        file: string,
+        args: ReadonlyArray<string> | undefined | null,
+        options: ExecFileOptionsWithStringEncoding,
+        callback: (error: ExecFileException | null, stdout: string, stderr: string) => void
+    ): ChildProcess;
+    // `options` with an `encoding` whose type is `string` means stdout/stderr could either be `Buffer` or `string`.
+    // There is no guarantee the `encoding` is unknown as `string` is a superset of `BufferEncoding`.
+    function execFile(file: string, options: ExecFileOptionsWithOtherEncoding, callback: (error: ExecFileException | null, stdout: string | Buffer, stderr: string | Buffer) => void): ChildProcess;
+    function execFile(
+        file: string,
+        args: ReadonlyArray<string> | undefined | null,
+        options: ExecFileOptionsWithOtherEncoding,
+        callback: (error: ExecFileException | null, stdout: string | Buffer, stderr: string | Buffer) => void
+    ): ChildProcess;
+    // `options` without an `encoding` means stdout/stderr are definitely `string`.
+    function execFile(file: string, options: ExecFileOptions, callback: (error: ExecFileException | null, stdout: string, stderr: string) => void): ChildProcess;
+    function execFile(
+        file: string,
+        args: ReadonlyArray<string> | undefined | null,
+        options: ExecFileOptions,
+        callback: (error: ExecFileException | null, stdout: string, stderr: string) => void
+    ): ChildProcess;
+    // fallback if nothing else matches. Worst case is always `string | Buffer`.
+    function execFile(
+        file: string,
+        options: (ObjectEncodingOptions & ExecFileOptions) | undefined | null,
+        callback: ((error: ExecFileException | null, stdout: string | Buffer, stderr: string | Buffer) => void) | undefined | null
+    ): ChildProcess;
+    function execFile(
+        file: string,
+        args: ReadonlyArray<string> | undefined | null,
+        options: (ObjectEncodingOptions & ExecFileOptions) | undefined | null,
+        callback: ((error: ExecFileException | null, stdout: string | Buffer, stderr: string | Buffer) => void) | undefined | null
+    ): ChildProcess;
+    namespace execFile {
+        function __promisify__(file: string): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            file: string,
+            args: ReadonlyArray<string> | undefined | null
+        ): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            file: string,
+            options: ExecFileOptionsWithBufferEncoding
+        ): PromiseWithChild<{
+            stdout: Buffer;
+            stderr: Buffer;
+        }>;
+        function __promisify__(
+            file: string,
+            args: ReadonlyArray<string> | undefined | null,
+            options: ExecFileOptionsWithBufferEncoding
+        ): PromiseWithChild<{
+            stdout: Buffer;
+            stderr: Buffer;
+        }>;
+        function __promisify__(
+            file: string,
+            options: ExecFileOptionsWithStringEncoding
+        ): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            file: string,
+            args: ReadonlyArray<string> | undefined | null,
+            options: ExecFileOptionsWithStringEncoding
+        ): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            file: string,
+            options: ExecFileOptionsWithOtherEncoding
+        ): PromiseWithChild<{
+            stdout: string | Buffer;
+            stderr: string | Buffer;
+        }>;
+        function __promisify__(
+            file: string,
+            args: ReadonlyArray<string> | undefined | null,
+            options: ExecFileOptionsWithOtherEncoding
+        ): PromiseWithChild<{
+            stdout: string | Buffer;
+            stderr: string | Buffer;
+        }>;
+        function __promisify__(
+            file: string,
+            options: ExecFileOptions
+        ): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            file: string,
+            args: ReadonlyArray<string> | undefined | null,
+            options: ExecFileOptions
+        ): PromiseWithChild<{
+            stdout: string;
+            stderr: string;
+        }>;
+        function __promisify__(
+            file: string,
+            options: (ObjectEncodingOptions & ExecFileOptions) | undefined | null
+        ): PromiseWithChild<{
+            stdout: string | Buffer;
+            stderr: string | Buffer;
+        }>;
+        function __promisify__(
+            file: string,
+            args: ReadonlyArray<string> | undefined | null,
+            options: (ObjectEncodingOptions & ExecFileOptions) | undefined | null
+        ): PromiseWithChild<{
+            stdout: string | Buffer;
+            stderr: string | Buffer;
+        }>;
+    }
+    interface ForkOptions extends ProcessEnvOptions, MessagingOptions, Abortable {
+        execPath?: string | undefined;
+        execArgv?: string[] | undefined;
+        silent?: boolean | undefined;
+        stdio?: StdioOptions | undefined;
+        detached?: boolean | undefined;
+        windowsVerbatimArguments?: boolean | undefined;
+    }
+    /**
+     * The `child_process.fork()` method is a special case of {@link spawn} used specifically to spawn new Node.js processes.
+     * Like {@link spawn}, a `ChildProcess` object is returned. The
+     * returned `ChildProcess` will have an additional communication channel
+     * built-in that allows messages to be passed back and forth between the parent and
+     * child. See `subprocess.send()` for details.
+     *
+     * Keep in mind that spawned Node.js child processes are
+     * independent of the parent with exception of the IPC communication channel
+     * that is established between the two. Each process has its own memory, with
+     * their own V8 instances. Because of the additional resource allocations
+     * required, spawning a large number of child Node.js processes is not
+     * recommended.
+     *
+     * By default, `child_process.fork()` will spawn new Node.js instances using the `process.execPath` of the parent process. The `execPath` property in the`options` object allows for an alternative
+     * execution path to be used.
+     *
+     * Node.js processes launched with a custom `execPath` will communicate with the
+     * parent process using the file descriptor (fd) identified using the
+     * environment variable `NODE_CHANNEL_FD` on the child process.
+     *
+     * Unlike the [`fork(2)`](http://man7.org/linux/man-pages/man2/fork.2.html) POSIX system call, `child_process.fork()` does not clone the
+     * current process.
+     *
+     * The `shell` option available in {@link spawn} is not supported by`child_process.fork()` and will be ignored if set.
+     *
+     * If the `signal` option is enabled, calling `.abort()` on the corresponding`AbortController` is similar to calling `.kill()` on the child process except
+     * the error passed to the callback will be an `AbortError`:
+     *
+     * ```js
+     * if (process.argv[2] === 'child') {
+     *   setTimeout(() => {
+     *     console.log(`Hello from ${process.argv[2]}!`);
+     *   }, 1_000);
+     * } else {
+     *   const { fork } = require('child_process');
+     *   const controller = new AbortController();
+     *   const { signal } = controller;
+     *   const child = fork(__filename, ['child'], { signal });
+     *   child.on('error', (err) => {
+     *     // This will be called with err being an AbortError if the controller aborts
+     *   });
+     *   controller.abort(); // Stops the child process
+     * }
+     * ```
+     * @since v0.5.0
+     * @param modulePath The module to run in the child.
+     * @param args List of string arguments.
+     */
+    function fork(modulePath: string, options?: ForkOptions): ChildProcess;
+    function fork(modulePath: string, args?: ReadonlyArray<string>, options?: ForkOptions): ChildProcess;
+    interface SpawnSyncOptions extends CommonSpawnOptions {
+        input?: string | NodeJS.ArrayBufferView | undefined;
+        maxBuffer?: number | undefined;
+        encoding?: BufferEncoding | 'buffer' | null | undefined;
+    }
+    interface SpawnSyncOptionsWithStringEncoding extends SpawnSyncOptions {
+        encoding: BufferEncoding;
+    }
+    interface SpawnSyncOptionsWithBufferEncoding extends SpawnSyncOptions {
+        encoding?: 'buffer' | null | undefined;
+    }
+    interface SpawnSyncReturns<T> {
+        pid: number;
+        output: Array<T | null>;
+        stdout: T;
+        stderr: T;
+        status: number | null;
+        signal: NodeJS.Signals | null;
+        error?: Error | undefined;
+    }
+    /**
+     * The `child_process.spawnSync()` method is generally identical to {@link spawn} with the exception that the function will not return
+     * until the child process has fully closed. When a timeout has been encountered
+     * and `killSignal` is sent, the method won't return until the process has
+     * completely exited. If the process intercepts and handles the `SIGTERM` signal
+     * and doesn't exit, the parent process will wait until the child process has
+     * exited.
+     *
+     * **If the `shell` option is enabled, do not pass unsanitized user input to this**
+     * **function. Any input containing shell metacharacters may be used to trigger**
+     * **arbitrary command execution.**
+     * @since v0.11.12
+     * @param command The command to run.
+     * @param args List of string arguments.
+     */
+    function spawnSync(command: string): SpawnSyncReturns<Buffer>;
+    function spawnSync(command: string, options: SpawnSyncOptionsWithStringEncoding): SpawnSyncReturns<string>;
+    function spawnSync(command: string, options: SpawnSyncOptionsWithBufferEncoding): SpawnSyncReturns<Buffer>;
+    function spawnSync(command: string, options?: SpawnSyncOptions): SpawnSyncReturns<string | Buffer>;
+    function spawnSync(command: string, args: ReadonlyArray<string>): SpawnSyncReturns<Buffer>;
+    function spawnSync(command: string, args: ReadonlyArray<string>, options: SpawnSyncOptionsWithStringEncoding): SpawnSyncReturns<string>;
+    function spawnSync(command: string, args: ReadonlyArray<string>, options: SpawnSyncOptionsWithBufferEncoding): SpawnSyncReturns<Buffer>;
+    function spawnSync(command: string, args?: ReadonlyArray<string>, options?: SpawnSyncOptions): SpawnSyncReturns<string | Buffer>;
+    interface CommonExecOptions extends CommonOptions {
+        input?: string | NodeJS.ArrayBufferView | undefined;
+        stdio?: StdioOptions | undefined;
+        killSignal?: NodeJS.Signals | number | undefined;
+        maxBuffer?: number | undefined;
+        encoding?: BufferEncoding | 'buffer' | null | undefined;
+    }
+    interface ExecSyncOptions extends CommonExecOptions {
+        shell?: string | undefined;
+    }
+    interface ExecSyncOptionsWithStringEncoding extends ExecSyncOptions {
+        encoding: BufferEncoding;
+    }
+    interface ExecSyncOptionsWithBufferEncoding extends ExecSyncOptions {
+        encoding?: 'buffer' | null | undefined;
+    }
+    /**
+     * The `child_process.execSync()` method is generally identical to {@link exec} with the exception that the method will not return
+     * until the child process has fully closed. When a timeout has been encountered
+     * and `killSignal` is sent, the method won't return until the process has
+     * completely exited. If the child process intercepts and handles the `SIGTERM`signal and doesn't exit, the parent process will wait until the child process
+     * has exited.
+     *
+     * If the process times out or has a non-zero exit code, this method will throw.
+     * The `Error` object will contain the entire result from {@link spawnSync}.
+     *
+     * **Never pass unsanitized user input to this function. Any input containing shell**
+     * **metacharacters may be used to trigger arbitrary command execution.**
+     * @since v0.11.12
+     * @param command The command to run.
+     * @return The stdout from the command.
+     */
+    function execSync(command: string): Buffer;
+    function execSync(command: string, options: ExecSyncOptionsWithStringEncoding): string;
+    function execSync(command: string, options: ExecSyncOptionsWithBufferEncoding): Buffer;
+    function execSync(command: string, options?: ExecSyncOptions): string | Buffer;
+    interface ExecFileSyncOptions extends CommonExecOptions {
+        shell?: boolean | string | undefined;
+    }
+    interface ExecFileSyncOptionsWithStringEncoding extends ExecFileSyncOptions {
+        encoding: BufferEncoding;
+    }
+    interface ExecFileSyncOptionsWithBufferEncoding extends ExecFileSyncOptions {
+        encoding?: 'buffer' | null; // specify `null`.
+    }
+    /**
+     * The `child_process.execFileSync()` method is generally identical to {@link execFile} with the exception that the method will not
+     * return until the child process has fully closed. When a timeout has been
+     * encountered and `killSignal` is sent, the method won't return until the process
+     * has completely exited.
+     *
+     * If the child process intercepts and handles the `SIGTERM` signal and
+     * does not exit, the parent process will still wait until the child process has
+     * exited.
+     *
+     * If the process times out or has a non-zero exit code, this method will throw an `Error` that will include the full result of the underlying {@link spawnSync}.
+     *
+     * **If the `shell` option is enabled, do not pass unsanitized user input to this**
+     * **function. Any input containing shell metacharacters may be used to trigger**
+     * **arbitrary command execution.**
+     * @since v0.11.12
+     * @param file The name or path of the executable file to run.
+     * @param args List of string arguments.
+     * @return The stdout from the command.
+     */
+    function execFileSync(file: string): Buffer;
+    function execFileSync(file: string, options: ExecFileSyncOptionsWithStringEncoding): string;
+    function execFileSync(file: string, options: ExecFileSyncOptionsWithBufferEncoding): Buffer;
+    function execFileSync(file: string, options?: ExecFileSyncOptions): string | Buffer;
+    function execFileSync(file: string, args: ReadonlyArray<string>): Buffer;
+    function execFileSync(file: string, args: ReadonlyArray<string>, options: ExecFileSyncOptionsWithStringEncoding): string;
+    function execFileSync(file: string, args: ReadonlyArray<string>, options: ExecFileSyncOptionsWithBufferEncoding): Buffer;
+    function execFileSync(file: string, args?: ReadonlyArray<string>, options?: ExecFileSyncOptions): string | Buffer;
+}
+declare module 'node:child_process' {
+    export * from 'child_process';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/cluster.d.ts b/igv_component/node_modules/@types/node/ts4.8/cluster.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..37dbc5746171fc04bcb8ea6f8b7183fa1b5db448
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/cluster.d.ts
@@ -0,0 +1,410 @@
+/**
+ * Clusters of Node.js processes can be used to run multiple instances of Node.js
+ * that can distribute workloads among their application threads. When process
+ * isolation is not needed, use the `worker_threads` module instead, which
+ * allows running multiple application threads within a single Node.js instance.
+ *
+ * The cluster module allows easy creation of child processes that all share
+ * server ports.
+ *
+ * ```js
+ * import cluster from 'cluster';
+ * import http from 'http';
+ * import { cpus } from 'os';
+ * import process from 'process';
+ *
+ * const numCPUs = cpus().length;
+ *
+ * if (cluster.isPrimary) {
+ *   console.log(`Primary ${process.pid} is running`);
+ *
+ *   // Fork workers.
+ *   for (let i = 0; i < numCPUs; i++) {
+ *     cluster.fork();
+ *   }
+ *
+ *   cluster.on('exit', (worker, code, signal) => {
+ *     console.log(`worker ${worker.process.pid} died`);
+ *   });
+ * } else {
+ *   // Workers can share any TCP connection
+ *   // In this case it is an HTTP server
+ *   http.createServer((req, res) => {
+ *     res.writeHead(200);
+ *     res.end('hello world\n');
+ *   }).listen(8000);
+ *
+ *   console.log(`Worker ${process.pid} started`);
+ * }
+ * ```
+ *
+ * Running Node.js will now share port 8000 between the workers:
+ *
+ * ```console
+ * $ node server.js
+ * Primary 3596 is running
+ * Worker 4324 started
+ * Worker 4520 started
+ * Worker 6056 started
+ * Worker 5644 started
+ * ```
+ *
+ * On Windows, it is not yet possible to set up a named pipe server in a worker.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/cluster.js)
+ */
+declare module 'cluster' {
+    import * as child from 'node:child_process';
+    import EventEmitter = require('node:events');
+    import * as net from 'node:net';
+    export interface ClusterSettings {
+        execArgv?: string[] | undefined; // default: process.execArgv
+        exec?: string | undefined;
+        args?: string[] | undefined;
+        silent?: boolean | undefined;
+        stdio?: any[] | undefined;
+        uid?: number | undefined;
+        gid?: number | undefined;
+        inspectPort?: number | (() => number) | undefined;
+    }
+    export interface Address {
+        address: string;
+        port: number;
+        addressType: number | 'udp4' | 'udp6'; // 4, 6, -1, "udp4", "udp6"
+    }
+    /**
+     * A `Worker` object contains all public information and method about a worker.
+     * In the primary it can be obtained using `cluster.workers`. In a worker
+     * it can be obtained using `cluster.worker`.
+     * @since v0.7.0
+     */
+    export class Worker extends EventEmitter {
+        /**
+         * Each new worker is given its own unique id, this id is stored in the`id`.
+         *
+         * While a worker is alive, this is the key that indexes it in`cluster.workers`.
+         * @since v0.8.0
+         */
+        id: number;
+        /**
+         * All workers are created using `child_process.fork()`, the returned object
+         * from this function is stored as `.process`. In a worker, the global `process`is stored.
+         *
+         * See: `Child Process module`.
+         *
+         * Workers will call `process.exit(0)` if the `'disconnect'` event occurs
+         * on `process` and `.exitedAfterDisconnect` is not `true`. This protects against
+         * accidental disconnection.
+         * @since v0.7.0
+         */
+        process: child.ChildProcess;
+        /**
+         * Send a message to a worker or primary, optionally with a handle.
+         *
+         * In the primary, this sends a message to a specific worker. It is identical to `ChildProcess.send()`.
+         *
+         * In a worker, this sends a message to the primary. It is identical to`process.send()`.
+         *
+         * This example will echo back all messages from the primary:
+         *
+         * ```js
+         * if (cluster.isPrimary) {
+         *   const worker = cluster.fork();
+         *   worker.send('hi there');
+         *
+         * } else if (cluster.isWorker) {
+         *   process.on('message', (msg) => {
+         *     process.send(msg);
+         *   });
+         * }
+         * ```
+         * @since v0.7.0
+         * @param options The `options` argument, if present, is an object used to parameterize the sending of certain types of handles. `options` supports the following properties:
+         */
+        send(message: child.Serializable, callback?: (error: Error | null) => void): boolean;
+        send(message: child.Serializable, sendHandle: child.SendHandle, callback?: (error: Error | null) => void): boolean;
+        send(message: child.Serializable, sendHandle: child.SendHandle, options?: child.MessageOptions, callback?: (error: Error | null) => void): boolean;
+        /**
+         * This function will kill the worker. In the primary worker, it does this by
+         * disconnecting the `worker.process`, and once disconnected, killing with`signal`. In the worker, it does it by killing the process with `signal`.
+         *
+         * The `kill()` function kills the worker process without waiting for a graceful
+         * disconnect, it has the same behavior as `worker.process.kill()`.
+         *
+         * This method is aliased as `worker.destroy()` for backwards compatibility.
+         *
+         * In a worker, `process.kill()` exists, but it is not this function;
+         * it is `kill()`.
+         * @since v0.9.12
+         * @param [signal='SIGTERM'] Name of the kill signal to send to the worker process.
+         */
+        kill(signal?: string): void;
+        destroy(signal?: string): void;
+        /**
+         * In a worker, this function will close all servers, wait for the `'close'` event
+         * on those servers, and then disconnect the IPC channel.
+         *
+         * In the primary, an internal message is sent to the worker causing it to call`.disconnect()` on itself.
+         *
+         * Causes `.exitedAfterDisconnect` to be set.
+         *
+         * After a server is closed, it will no longer accept new connections,
+         * but connections may be accepted by any other listening worker. Existing
+         * connections will be allowed to close as usual. When no more connections exist,
+         * see `server.close()`, the IPC channel to the worker will close allowing it
+         * to die gracefully.
+         *
+         * The above applies _only_ to server connections, client connections are not
+         * automatically closed by workers, and disconnect does not wait for them to close
+         * before exiting.
+         *
+         * In a worker, `process.disconnect` exists, but it is not this function;
+         * it is `disconnect()`.
+         *
+         * Because long living server connections may block workers from disconnecting, it
+         * may be useful to send a message, so application specific actions may be taken to
+         * close them. It also may be useful to implement a timeout, killing a worker if
+         * the `'disconnect'` event has not been emitted after some time.
+         *
+         * ```js
+         * if (cluster.isPrimary) {
+         *   const worker = cluster.fork();
+         *   let timeout;
+         *
+         *   worker.on('listening', (address) => {
+         *     worker.send('shutdown');
+         *     worker.disconnect();
+         *     timeout = setTimeout(() => {
+         *       worker.kill();
+         *     }, 2000);
+         *   });
+         *
+         *   worker.on('disconnect', () => {
+         *     clearTimeout(timeout);
+         *   });
+         *
+         * } else if (cluster.isWorker) {
+         *   const net = require('net');
+         *   const server = net.createServer((socket) => {
+         *     // Connections never end
+         *   });
+         *
+         *   server.listen(8000);
+         *
+         *   process.on('message', (msg) => {
+         *     if (msg === 'shutdown') {
+         *       // Initiate graceful close of any connections to server
+         *     }
+         *   });
+         * }
+         * ```
+         * @since v0.7.7
+         * @return A reference to `worker`.
+         */
+        disconnect(): void;
+        /**
+         * This function returns `true` if the worker is connected to its primary via its
+         * IPC channel, `false` otherwise. A worker is connected to its primary after it
+         * has been created. It is disconnected after the `'disconnect'` event is emitted.
+         * @since v0.11.14
+         */
+        isConnected(): boolean;
+        /**
+         * This function returns `true` if the worker's process has terminated (either
+         * because of exiting or being signaled). Otherwise, it returns `false`.
+         *
+         * ```js
+         * import cluster from 'cluster';
+         * import http from 'http';
+         * import { cpus } from 'os';
+         * import process from 'process';
+         *
+         * const numCPUs = cpus().length;
+         *
+         * if (cluster.isPrimary) {
+         *   console.log(`Primary ${process.pid} is running`);
+         *
+         *   // Fork workers.
+         *   for (let i = 0; i < numCPUs; i++) {
+         *     cluster.fork();
+         *   }
+         *
+         *   cluster.on('fork', (worker) => {
+         *     console.log('worker is dead:', worker.isDead());
+         *   });
+         *
+         *   cluster.on('exit', (worker, code, signal) => {
+         *     console.log('worker is dead:', worker.isDead());
+         *   });
+         * } else {
+         *   // Workers can share any TCP connection. In this case, it is an HTTP server.
+         *   http.createServer((req, res) => {
+         *     res.writeHead(200);
+         *     res.end(`Current process\n ${process.pid}`);
+         *     process.kill(process.pid);
+         *   }).listen(8000);
+         * }
+         * ```
+         * @since v0.11.14
+         */
+        isDead(): boolean;
+        /**
+         * This property is `true` if the worker exited due to `.disconnect()`.
+         * If the worker exited any other way, it is `false`. If the
+         * worker has not exited, it is `undefined`.
+         *
+         * The boolean `worker.exitedAfterDisconnect` allows distinguishing between
+         * voluntary and accidental exit, the primary may choose not to respawn a worker
+         * based on this value.
+         *
+         * ```js
+         * cluster.on('exit', (worker, code, signal) => {
+         *   if (worker.exitedAfterDisconnect === true) {
+         *     console.log('Oh, it was just voluntary – no need to worry');
+         *   }
+         * });
+         *
+         * // kill worker
+         * worker.kill();
+         * ```
+         * @since v6.0.0
+         */
+        exitedAfterDisconnect: boolean;
+        /**
+         * events.EventEmitter
+         *   1. disconnect
+         *   2. error
+         *   3. exit
+         *   4. listening
+         *   5. message
+         *   6. online
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'disconnect', listener: () => void): this;
+        addListener(event: 'error', listener: (error: Error) => void): this;
+        addListener(event: 'exit', listener: (code: number, signal: string) => void): this;
+        addListener(event: 'listening', listener: (address: Address) => void): this;
+        addListener(event: 'message', listener: (message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        addListener(event: 'online', listener: () => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'disconnect'): boolean;
+        emit(event: 'error', error: Error): boolean;
+        emit(event: 'exit', code: number, signal: string): boolean;
+        emit(event: 'listening', address: Address): boolean;
+        emit(event: 'message', message: any, handle: net.Socket | net.Server): boolean;
+        emit(event: 'online'): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'disconnect', listener: () => void): this;
+        on(event: 'error', listener: (error: Error) => void): this;
+        on(event: 'exit', listener: (code: number, signal: string) => void): this;
+        on(event: 'listening', listener: (address: Address) => void): this;
+        on(event: 'message', listener: (message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        on(event: 'online', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'disconnect', listener: () => void): this;
+        once(event: 'error', listener: (error: Error) => void): this;
+        once(event: 'exit', listener: (code: number, signal: string) => void): this;
+        once(event: 'listening', listener: (address: Address) => void): this;
+        once(event: 'message', listener: (message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        once(event: 'online', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'disconnect', listener: () => void): this;
+        prependListener(event: 'error', listener: (error: Error) => void): this;
+        prependListener(event: 'exit', listener: (code: number, signal: string) => void): this;
+        prependListener(event: 'listening', listener: (address: Address) => void): this;
+        prependListener(event: 'message', listener: (message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        prependListener(event: 'online', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'disconnect', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (error: Error) => void): this;
+        prependOnceListener(event: 'exit', listener: (code: number, signal: string) => void): this;
+        prependOnceListener(event: 'listening', listener: (address: Address) => void): this;
+        prependOnceListener(event: 'message', listener: (message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        prependOnceListener(event: 'online', listener: () => void): this;
+    }
+    export interface Cluster extends EventEmitter {
+        disconnect(callback?: () => void): void;
+        fork(env?: any): Worker;
+        /** @deprecated since v16.0.0 - use isPrimary. */
+        readonly isMaster: boolean;
+        readonly isPrimary: boolean;
+        readonly isWorker: boolean;
+        schedulingPolicy: number;
+        readonly settings: ClusterSettings;
+        /** @deprecated since v16.0.0 - use setupPrimary. */
+        setupMaster(settings?: ClusterSettings): void;
+        /**
+         * `setupPrimary` is used to change the default 'fork' behavior. Once called, the settings will be present in cluster.settings.
+         */
+        setupPrimary(settings?: ClusterSettings): void;
+        readonly worker?: Worker | undefined;
+        readonly workers?: NodeJS.Dict<Worker> | undefined;
+        readonly SCHED_NONE: number;
+        readonly SCHED_RR: number;
+        /**
+         * events.EventEmitter
+         *   1. disconnect
+         *   2. exit
+         *   3. fork
+         *   4. listening
+         *   5. message
+         *   6. online
+         *   7. setup
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'disconnect', listener: (worker: Worker) => void): this;
+        addListener(event: 'exit', listener: (worker: Worker, code: number, signal: string) => void): this;
+        addListener(event: 'fork', listener: (worker: Worker) => void): this;
+        addListener(event: 'listening', listener: (worker: Worker, address: Address) => void): this;
+        addListener(event: 'message', listener: (worker: Worker, message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        addListener(event: 'online', listener: (worker: Worker) => void): this;
+        addListener(event: 'setup', listener: (settings: ClusterSettings) => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'disconnect', worker: Worker): boolean;
+        emit(event: 'exit', worker: Worker, code: number, signal: string): boolean;
+        emit(event: 'fork', worker: Worker): boolean;
+        emit(event: 'listening', worker: Worker, address: Address): boolean;
+        emit(event: 'message', worker: Worker, message: any, handle: net.Socket | net.Server): boolean;
+        emit(event: 'online', worker: Worker): boolean;
+        emit(event: 'setup', settings: ClusterSettings): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'disconnect', listener: (worker: Worker) => void): this;
+        on(event: 'exit', listener: (worker: Worker, code: number, signal: string) => void): this;
+        on(event: 'fork', listener: (worker: Worker) => void): this;
+        on(event: 'listening', listener: (worker: Worker, address: Address) => void): this;
+        on(event: 'message', listener: (worker: Worker, message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        on(event: 'online', listener: (worker: Worker) => void): this;
+        on(event: 'setup', listener: (settings: ClusterSettings) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'disconnect', listener: (worker: Worker) => void): this;
+        once(event: 'exit', listener: (worker: Worker, code: number, signal: string) => void): this;
+        once(event: 'fork', listener: (worker: Worker) => void): this;
+        once(event: 'listening', listener: (worker: Worker, address: Address) => void): this;
+        once(event: 'message', listener: (worker: Worker, message: any, handle: net.Socket | net.Server) => void): this; // the handle is a net.Socket or net.Server object, or undefined.
+        once(event: 'online', listener: (worker: Worker) => void): this;
+        once(event: 'setup', listener: (settings: ClusterSettings) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'disconnect', listener: (worker: Worker) => void): this;
+        prependListener(event: 'exit', listener: (worker: Worker, code: number, signal: string) => void): this;
+        prependListener(event: 'fork', listener: (worker: Worker) => void): this;
+        prependListener(event: 'listening', listener: (worker: Worker, address: Address) => void): this;
+        // the handle is a net.Socket or net.Server object, or undefined.
+        prependListener(event: 'message', listener: (worker: Worker, message: any, handle?: net.Socket | net.Server) => void): this;
+        prependListener(event: 'online', listener: (worker: Worker) => void): this;
+        prependListener(event: 'setup', listener: (settings: ClusterSettings) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'disconnect', listener: (worker: Worker) => void): this;
+        prependOnceListener(event: 'exit', listener: (worker: Worker, code: number, signal: string) => void): this;
+        prependOnceListener(event: 'fork', listener: (worker: Worker) => void): this;
+        prependOnceListener(event: 'listening', listener: (worker: Worker, address: Address) => void): this;
+        // the handle is a net.Socket or net.Server object, or undefined.
+        prependOnceListener(event: 'message', listener: (worker: Worker, message: any, handle: net.Socket | net.Server) => void): this;
+        prependOnceListener(event: 'online', listener: (worker: Worker) => void): this;
+        prependOnceListener(event: 'setup', listener: (settings: ClusterSettings) => void): this;
+    }
+    const cluster: Cluster;
+    export default cluster;
+}
+declare module 'node:cluster' {
+    export * from 'cluster';
+    export { default as default } from 'cluster';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/console.d.ts b/igv_component/node_modules/@types/node/ts4.8/console.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..16c9137adf20cd8eaad74c61819ff6e300205b7a
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/console.d.ts
@@ -0,0 +1,412 @@
+/**
+ * The `console` module provides a simple debugging console that is similar to the
+ * JavaScript console mechanism provided by web browsers.
+ *
+ * The module exports two specific components:
+ *
+ * * A `Console` class with methods such as `console.log()`, `console.error()` and`console.warn()` that can be used to write to any Node.js stream.
+ * * A global `console` instance configured to write to `process.stdout` and `process.stderr`. The global `console` can be used without calling`require('console')`.
+ *
+ * _**Warning**_: The global console object's methods are neither consistently
+ * synchronous like the browser APIs they resemble, nor are they consistently
+ * asynchronous like all other Node.js streams. See the `note on process I/O` for
+ * more information.
+ *
+ * Example using the global `console`:
+ *
+ * ```js
+ * console.log('hello world');
+ * // Prints: hello world, to stdout
+ * console.log('hello %s', 'world');
+ * // Prints: hello world, to stdout
+ * console.error(new Error('Whoops, something bad happened'));
+ * // Prints error message and stack trace to stderr:
+ * //   Error: Whoops, something bad happened
+ * //     at [eval]:5:15
+ * //     at Script.runInThisContext (node:vm:132:18)
+ * //     at Object.runInThisContext (node:vm:309:38)
+ * //     at node:internal/process/execution:77:19
+ * //     at [eval]-wrapper:6:22
+ * //     at evalScript (node:internal/process/execution:76:60)
+ * //     at node:internal/main/eval_string:23:3
+ *
+ * const name = 'Will Robinson';
+ * console.warn(`Danger ${name}! Danger!`);
+ * // Prints: Danger Will Robinson! Danger!, to stderr
+ * ```
+ *
+ * Example using the `Console` class:
+ *
+ * ```js
+ * const out = getStreamSomehow();
+ * const err = getStreamSomehow();
+ * const myConsole = new console.Console(out, err);
+ *
+ * myConsole.log('hello world');
+ * // Prints: hello world, to out
+ * myConsole.log('hello %s', 'world');
+ * // Prints: hello world, to out
+ * myConsole.error(new Error('Whoops, something bad happened'));
+ * // Prints: [Error: Whoops, something bad happened], to err
+ *
+ * const name = 'Will Robinson';
+ * myConsole.warn(`Danger ${name}! Danger!`);
+ * // Prints: Danger Will Robinson! Danger!, to err
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/console.js)
+ */
+declare module 'console' {
+    import console = require('node:console');
+    export = console;
+}
+declare module 'node:console' {
+    import { InspectOptions } from 'node:util';
+    global {
+        // This needs to be global to avoid TS2403 in case lib.dom.d.ts is present in the same build
+        interface Console {
+            Console: console.ConsoleConstructor;
+            /**
+             * `console.assert()` writes a message if `value` is [falsy](https://developer.mozilla.org/en-US/docs/Glossary/Falsy) or omitted. It only
+             * writes a message and does not otherwise affect execution. The output always
+             * starts with `"Assertion failed"`. If provided, `message` is formatted using `util.format()`.
+             *
+             * If `value` is [truthy](https://developer.mozilla.org/en-US/docs/Glossary/Truthy), nothing happens.
+             *
+             * ```js
+             * console.assert(true, 'does nothing');
+             *
+             * console.assert(false, 'Whoops %s work', 'didn\'t');
+             * // Assertion failed: Whoops didn't work
+             *
+             * console.assert();
+             * // Assertion failed
+             * ```
+             * @since v0.1.101
+             * @param value The value tested for being truthy.
+             * @param message All arguments besides `value` are used as error message.
+             */
+            assert(value: any, message?: string, ...optionalParams: any[]): void;
+            /**
+             * When `stdout` is a TTY, calling `console.clear()` will attempt to clear the
+             * TTY. When `stdout` is not a TTY, this method does nothing.
+             *
+             * The specific operation of `console.clear()` can vary across operating systems
+             * and terminal types. For most Linux operating systems, `console.clear()`operates similarly to the `clear` shell command. On Windows, `console.clear()`will clear only the output in the
+             * current terminal viewport for the Node.js
+             * binary.
+             * @since v8.3.0
+             */
+            clear(): void;
+            /**
+             * Maintains an internal counter specific to `label` and outputs to `stdout` the
+             * number of times `console.count()` has been called with the given `label`.
+             *
+             * ```js
+             * > console.count()
+             * default: 1
+             * undefined
+             * > console.count('default')
+             * default: 2
+             * undefined
+             * > console.count('abc')
+             * abc: 1
+             * undefined
+             * > console.count('xyz')
+             * xyz: 1
+             * undefined
+             * > console.count('abc')
+             * abc: 2
+             * undefined
+             * > console.count()
+             * default: 3
+             * undefined
+             * >
+             * ```
+             * @since v8.3.0
+             * @param label The display label for the counter.
+             */
+            count(label?: string): void;
+            /**
+             * Resets the internal counter specific to `label`.
+             *
+             * ```js
+             * > console.count('abc');
+             * abc: 1
+             * undefined
+             * > console.countReset('abc');
+             * undefined
+             * > console.count('abc');
+             * abc: 1
+             * undefined
+             * >
+             * ```
+             * @since v8.3.0
+             * @param label The display label for the counter.
+             */
+            countReset(label?: string): void;
+            /**
+             * The `console.debug()` function is an alias for {@link log}.
+             * @since v8.0.0
+             */
+            debug(message?: any, ...optionalParams: any[]): void;
+            /**
+             * Uses `util.inspect()` on `obj` and prints the resulting string to `stdout`.
+             * This function bypasses any custom `inspect()` function defined on `obj`.
+             * @since v0.1.101
+             */
+            dir(obj: any, options?: InspectOptions): void;
+            /**
+             * This method calls `console.log()` passing it the arguments received.
+             * This method does not produce any XML formatting.
+             * @since v8.0.0
+             */
+            dirxml(...data: any[]): void;
+            /**
+             * Prints to `stderr` with newline. Multiple arguments can be passed, with the
+             * first used as the primary message and all additional used as substitution
+             * values similar to [`printf(3)`](http://man7.org/linux/man-pages/man3/printf.3.html) (the arguments are all passed to `util.format()`).
+             *
+             * ```js
+             * const code = 5;
+             * console.error('error #%d', code);
+             * // Prints: error #5, to stderr
+             * console.error('error', code);
+             * // Prints: error 5, to stderr
+             * ```
+             *
+             * If formatting elements (e.g. `%d`) are not found in the first string then `util.inspect()` is called on each argument and the resulting string
+             * values are concatenated. See `util.format()` for more information.
+             * @since v0.1.100
+             */
+            error(message?: any, ...optionalParams: any[]): void;
+            /**
+             * Increases indentation of subsequent lines by spaces for `groupIndentation`length.
+             *
+             * If one or more `label`s are provided, those are printed first without the
+             * additional indentation.
+             * @since v8.5.0
+             */
+            group(...label: any[]): void;
+            /**
+             * An alias for {@link group}.
+             * @since v8.5.0
+             */
+            groupCollapsed(...label: any[]): void;
+            /**
+             * Decreases indentation of subsequent lines by spaces for `groupIndentation`length.
+             * @since v8.5.0
+             */
+            groupEnd(): void;
+            /**
+             * The `console.info()` function is an alias for {@link log}.
+             * @since v0.1.100
+             */
+            info(message?: any, ...optionalParams: any[]): void;
+            /**
+             * Prints to `stdout` with newline. Multiple arguments can be passed, with the
+             * first used as the primary message and all additional used as substitution
+             * values similar to [`printf(3)`](http://man7.org/linux/man-pages/man3/printf.3.html) (the arguments are all passed to `util.format()`).
+             *
+             * ```js
+             * const count = 5;
+             * console.log('count: %d', count);
+             * // Prints: count: 5, to stdout
+             * console.log('count:', count);
+             * // Prints: count: 5, to stdout
+             * ```
+             *
+             * See `util.format()` for more information.
+             * @since v0.1.100
+             */
+            log(message?: any, ...optionalParams: any[]): void;
+            /**
+             * Try to construct a table with the columns of the properties of `tabularData`(or use `properties`) and rows of `tabularData` and log it. Falls back to just
+             * logging the argument if it can’t be parsed as tabular.
+             *
+             * ```js
+             * // These can't be parsed as tabular data
+             * console.table(Symbol());
+             * // Symbol()
+             *
+             * console.table(undefined);
+             * // undefined
+             *
+             * console.table([{ a: 1, b: 'Y' }, { a: 'Z', b: 2 }]);
+             * // ┌─────────┬─────┬─────┐
+             * // │ (index) │  a  │  b  │
+             * // ├─────────┼─────┼─────┤
+             * // │    0    │  1  │ 'Y' │
+             * // │    1    │ 'Z' │  2  │
+             * // └─────────┴─────┴─────┘
+             *
+             * console.table([{ a: 1, b: 'Y' }, { a: 'Z', b: 2 }], ['a']);
+             * // ┌─────────┬─────┐
+             * // │ (index) │  a  │
+             * // ├─────────┼─────┤
+             * // │    0    │  1  │
+             * // │    1    │ 'Z' │
+             * // └─────────┴─────┘
+             * ```
+             * @since v10.0.0
+             * @param properties Alternate properties for constructing the table.
+             */
+            table(tabularData: any, properties?: ReadonlyArray<string>): void;
+            /**
+             * Starts a timer that can be used to compute the duration of an operation. Timers
+             * are identified by a unique `label`. Use the same `label` when calling {@link timeEnd} to stop the timer and output the elapsed time in
+             * suitable time units to `stdout`. For example, if the elapsed
+             * time is 3869ms, `console.timeEnd()` displays "3.869s".
+             * @since v0.1.104
+             */
+            time(label?: string): void;
+            /**
+             * Stops a timer that was previously started by calling {@link time} and
+             * prints the result to `stdout`:
+             *
+             * ```js
+             * console.time('100-elements');
+             * for (let i = 0; i < 100; i++) {}
+             * console.timeEnd('100-elements');
+             * // prints 100-elements: 225.438ms
+             * ```
+             * @since v0.1.104
+             */
+            timeEnd(label?: string): void;
+            /**
+             * For a timer that was previously started by calling {@link time}, prints
+             * the elapsed time and other `data` arguments to `stdout`:
+             *
+             * ```js
+             * console.time('process');
+             * const value = expensiveProcess1(); // Returns 42
+             * console.timeLog('process', value);
+             * // Prints "process: 365.227ms 42".
+             * doExpensiveProcess2(value);
+             * console.timeEnd('process');
+             * ```
+             * @since v10.7.0
+             */
+            timeLog(label?: string, ...data: any[]): void;
+            /**
+             * Prints to `stderr` the string `'Trace: '`, followed by the `util.format()` formatted message and stack trace to the current position in the code.
+             *
+             * ```js
+             * console.trace('Show me');
+             * // Prints: (stack trace will vary based on where trace is called)
+             * //  Trace: Show me
+             * //    at repl:2:9
+             * //    at REPLServer.defaultEval (repl.js:248:27)
+             * //    at bound (domain.js:287:14)
+             * //    at REPLServer.runBound [as eval] (domain.js:300:12)
+             * //    at REPLServer.<anonymous> (repl.js:412:12)
+             * //    at emitOne (events.js:82:20)
+             * //    at REPLServer.emit (events.js:169:7)
+             * //    at REPLServer.Interface._onLine (readline.js:210:10)
+             * //    at REPLServer.Interface._line (readline.js:549:8)
+             * //    at REPLServer.Interface._ttyWrite (readline.js:826:14)
+             * ```
+             * @since v0.1.104
+             */
+            trace(message?: any, ...optionalParams: any[]): void;
+            /**
+             * The `console.warn()` function is an alias for {@link error}.
+             * @since v0.1.100
+             */
+            warn(message?: any, ...optionalParams: any[]): void;
+            // --- Inspector mode only ---
+            /**
+             * This method does not display anything unless used in the inspector.
+             *  Starts a JavaScript CPU profile with an optional label.
+             */
+            profile(label?: string): void;
+            /**
+             * This method does not display anything unless used in the inspector.
+             *  Stops the current JavaScript CPU profiling session if one has been started and prints the report to the Profiles panel of the inspector.
+             */
+            profileEnd(label?: string): void;
+            /**
+             * This method does not display anything unless used in the inspector.
+             *  Adds an event with the label `label` to the Timeline panel of the inspector.
+             */
+            timeStamp(label?: string): void;
+        }
+        /**
+         * The `console` module provides a simple debugging console that is similar to the
+         * JavaScript console mechanism provided by web browsers.
+         *
+         * The module exports two specific components:
+         *
+         * * A `Console` class with methods such as `console.log()`, `console.error()` and`console.warn()` that can be used to write to any Node.js stream.
+         * * A global `console` instance configured to write to `process.stdout` and `process.stderr`. The global `console` can be used without calling`require('console')`.
+         *
+         * _**Warning**_: The global console object's methods are neither consistently
+         * synchronous like the browser APIs they resemble, nor are they consistently
+         * asynchronous like all other Node.js streams. See the `note on process I/O` for
+         * more information.
+         *
+         * Example using the global `console`:
+         *
+         * ```js
+         * console.log('hello world');
+         * // Prints: hello world, to stdout
+         * console.log('hello %s', 'world');
+         * // Prints: hello world, to stdout
+         * console.error(new Error('Whoops, something bad happened'));
+         * // Prints error message and stack trace to stderr:
+         * //   Error: Whoops, something bad happened
+         * //     at [eval]:5:15
+         * //     at Script.runInThisContext (node:vm:132:18)
+         * //     at Object.runInThisContext (node:vm:309:38)
+         * //     at node:internal/process/execution:77:19
+         * //     at [eval]-wrapper:6:22
+         * //     at evalScript (node:internal/process/execution:76:60)
+         * //     at node:internal/main/eval_string:23:3
+         *
+         * const name = 'Will Robinson';
+         * console.warn(`Danger ${name}! Danger!`);
+         * // Prints: Danger Will Robinson! Danger!, to stderr
+         * ```
+         *
+         * Example using the `Console` class:
+         *
+         * ```js
+         * const out = getStreamSomehow();
+         * const err = getStreamSomehow();
+         * const myConsole = new console.Console(out, err);
+         *
+         * myConsole.log('hello world');
+         * // Prints: hello world, to out
+         * myConsole.log('hello %s', 'world');
+         * // Prints: hello world, to out
+         * myConsole.error(new Error('Whoops, something bad happened'));
+         * // Prints: [Error: Whoops, something bad happened], to err
+         *
+         * const name = 'Will Robinson';
+         * myConsole.warn(`Danger ${name}! Danger!`);
+         * // Prints: Danger Will Robinson! Danger!, to err
+         * ```
+         * @see [source](https://github.com/nodejs/node/blob/v16.4.2/lib/console.js)
+         */
+        namespace console {
+            interface ConsoleConstructorOptions {
+                stdout: NodeJS.WritableStream;
+                stderr?: NodeJS.WritableStream | undefined;
+                ignoreErrors?: boolean | undefined;
+                colorMode?: boolean | 'auto' | undefined;
+                inspectOptions?: InspectOptions | undefined;
+                /**
+                 * Set group indentation
+                 * @default 2
+                 */
+                groupIndentation?: number | undefined;
+            }
+            interface ConsoleConstructor {
+                prototype: Console;
+                new (stdout: NodeJS.WritableStream, stderr?: NodeJS.WritableStream, ignoreErrors?: boolean): Console;
+                new (options: ConsoleConstructorOptions): Console;
+            }
+        }
+        var console: Console;
+    }
+    export = globalThis.console;
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/constants.d.ts b/igv_component/node_modules/@types/node/ts4.8/constants.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..208020dcbab4ebcd7955b2abcb7ae49185f5976e
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/constants.d.ts
@@ -0,0 +1,18 @@
+/** @deprecated since v6.3.0 - use constants property exposed by the relevant module instead. */
+declare module 'constants' {
+    import { constants as osConstants, SignalConstants } from 'node:os';
+    import { constants as cryptoConstants } from 'node:crypto';
+    import { constants as fsConstants } from 'node:fs';
+
+    const exp: typeof osConstants.errno &
+        typeof osConstants.priority &
+        SignalConstants &
+        typeof cryptoConstants &
+        typeof fsConstants;
+    export = exp;
+}
+
+declare module 'node:constants' {
+    import constants = require('constants');
+    export = constants;
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/crypto.d.ts b/igv_component/node_modules/@types/node/ts4.8/crypto.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6135090b0a13cf82b44b94bbfd6348ce920d7610
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/crypto.d.ts
@@ -0,0 +1,3961 @@
+/**
+ * The `crypto` module provides cryptographic functionality that includes a set of
+ * wrappers for OpenSSL's hash, HMAC, cipher, decipher, sign, and verify functions.
+ *
+ * ```js
+ * const { createHmac } = await import('crypto');
+ *
+ * const secret = 'abcdefg';
+ * const hash = createHmac('sha256', secret)
+ *                .update('I love cupcakes')
+ *                .digest('hex');
+ * console.log(hash);
+ * // Prints:
+ * //   c0fa1bc00531bd78ef38c628449c5102aeabd49b5dc3a2a516ea6ea959d6658e
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/crypto.js)
+ */
+declare module 'crypto' {
+    import * as stream from 'node:stream';
+    import { PeerCertificate } from 'node:tls';
+    /**
+     * SPKAC is a Certificate Signing Request mechanism originally implemented by
+     * Netscape and was specified formally as part of [HTML5's `keygen` element](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/keygen).
+     *
+     * `<keygen>` is deprecated since [HTML 5.2](https://www.w3.org/TR/html52/changes.html#features-removed) and new projects
+     * should not use this element anymore.
+     *
+     * The `crypto` module provides the `Certificate` class for working with SPKAC
+     * data. The most common usage is handling output generated by the HTML5`<keygen>` element. Node.js uses [OpenSSL's SPKAC
+     * implementation](https://www.openssl.org/docs/man1.1.0/apps/openssl-spkac.html) internally.
+     * @since v0.11.8
+     */
+    class Certificate {
+        /**
+         * ```js
+         * const { Certificate } = await import('crypto');
+         * const spkac = getSpkacSomehow();
+         * const challenge = Certificate.exportChallenge(spkac);
+         * console.log(challenge.toString('utf8'));
+         * // Prints: the challenge as a UTF8 string
+         * ```
+         * @since v9.0.0
+         * @param encoding The `encoding` of the `spkac` string.
+         * @return The challenge component of the `spkac` data structure, which includes a public key and a challenge.
+         */
+        static exportChallenge(spkac: BinaryLike): Buffer;
+        /**
+         * ```js
+         * const { Certificate } = await import('crypto');
+         * const spkac = getSpkacSomehow();
+         * const publicKey = Certificate.exportPublicKey(spkac);
+         * console.log(publicKey);
+         * // Prints: the public key as <Buffer ...>
+         * ```
+         * @since v9.0.0
+         * @param encoding The `encoding` of the `spkac` string.
+         * @return The public key component of the `spkac` data structure, which includes a public key and a challenge.
+         */
+        static exportPublicKey(spkac: BinaryLike, encoding?: string): Buffer;
+        /**
+         * ```js
+         * import { Buffer } from 'buffer';
+         * const { Certificate } = await import('crypto');
+         *
+         * const spkac = getSpkacSomehow();
+         * console.log(Certificate.verifySpkac(Buffer.from(spkac)));
+         * // Prints: true or false
+         * ```
+         * @since v9.0.0
+         * @param encoding The `encoding` of the `spkac` string.
+         * @return `true` if the given `spkac` data structure is valid, `false` otherwise.
+         */
+        static verifySpkac(spkac: NodeJS.ArrayBufferView): boolean;
+        /**
+         * @deprecated
+         * @param spkac
+         * @returns The challenge component of the `spkac` data structure,
+         * which includes a public key and a challenge.
+         */
+        exportChallenge(spkac: BinaryLike): Buffer;
+        /**
+         * @deprecated
+         * @param spkac
+         * @param encoding The encoding of the spkac string.
+         * @returns The public key component of the `spkac` data structure,
+         * which includes a public key and a challenge.
+         */
+        exportPublicKey(spkac: BinaryLike, encoding?: string): Buffer;
+        /**
+         * @deprecated
+         * @param spkac
+         * @returns `true` if the given `spkac` data structure is valid,
+         * `false` otherwise.
+         */
+        verifySpkac(spkac: NodeJS.ArrayBufferView): boolean;
+    }
+    namespace constants {
+        // https://nodejs.org/dist/latest-v10.x/docs/api/crypto.html#crypto_crypto_constants
+        const OPENSSL_VERSION_NUMBER: number;
+        /** Applies multiple bug workarounds within OpenSSL. See https://www.openssl.org/docs/man1.0.2/ssl/SSL_CTX_set_options.html for detail. */
+        const SSL_OP_ALL: number;
+        /** Allows legacy insecure renegotiation between OpenSSL and unpatched clients or servers. See https://www.openssl.org/docs/man1.0.2/ssl/SSL_CTX_set_options.html. */
+        const SSL_OP_ALLOW_UNSAFE_LEGACY_RENEGOTIATION: number;
+        /** Attempts to use the server's preferences instead of the client's when selecting a cipher. See https://www.openssl.org/docs/man1.0.2/ssl/SSL_CTX_set_options.html. */
+        const SSL_OP_CIPHER_SERVER_PREFERENCE: number;
+        /** Instructs OpenSSL to use Cisco's "speshul" version of DTLS_BAD_VER. */
+        const SSL_OP_CISCO_ANYCONNECT: number;
+        /** Instructs OpenSSL to turn on cookie exchange. */
+        const SSL_OP_COOKIE_EXCHANGE: number;
+        /** Instructs OpenSSL to add server-hello extension from an early version of the cryptopro draft. */
+        const SSL_OP_CRYPTOPRO_TLSEXT_BUG: number;
+        /** Instructs OpenSSL to disable a SSL 3.0/TLS 1.0 vulnerability workaround added in OpenSSL 0.9.6d. */
+        const SSL_OP_DONT_INSERT_EMPTY_FRAGMENTS: number;
+        /** Instructs OpenSSL to always use the tmp_rsa key when performing RSA operations. */
+        const SSL_OP_EPHEMERAL_RSA: number;
+        /** Allows initial connection to servers that do not support RI. */
+        const SSL_OP_LEGACY_SERVER_CONNECT: number;
+        const SSL_OP_MICROSOFT_BIG_SSLV3_BUFFER: number;
+        const SSL_OP_MICROSOFT_SESS_ID_BUG: number;
+        /** Instructs OpenSSL to disable the workaround for a man-in-the-middle protocol-version vulnerability in the SSL 2.0 server implementation. */
+        const SSL_OP_MSIE_SSLV2_RSA_PADDING: number;
+        const SSL_OP_NETSCAPE_CA_DN_BUG: number;
+        const SSL_OP_NETSCAPE_CHALLENGE_BUG: number;
+        const SSL_OP_NETSCAPE_DEMO_CIPHER_CHANGE_BUG: number;
+        const SSL_OP_NETSCAPE_REUSE_CIPHER_CHANGE_BUG: number;
+        /** Instructs OpenSSL to disable support for SSL/TLS compression. */
+        const SSL_OP_NO_COMPRESSION: number;
+        const SSL_OP_NO_QUERY_MTU: number;
+        /** Instructs OpenSSL to always start a new session when performing renegotiation. */
+        const SSL_OP_NO_SESSION_RESUMPTION_ON_RENEGOTIATION: number;
+        const SSL_OP_NO_SSLv2: number;
+        const SSL_OP_NO_SSLv3: number;
+        const SSL_OP_NO_TICKET: number;
+        const SSL_OP_NO_TLSv1: number;
+        const SSL_OP_NO_TLSv1_1: number;
+        const SSL_OP_NO_TLSv1_2: number;
+        const SSL_OP_PKCS1_CHECK_1: number;
+        const SSL_OP_PKCS1_CHECK_2: number;
+        /** Instructs OpenSSL to always create a new key when using temporary/ephemeral DH parameters. */
+        const SSL_OP_SINGLE_DH_USE: number;
+        /** Instructs OpenSSL to always create a new key when using temporary/ephemeral ECDH parameters. */
+        const SSL_OP_SINGLE_ECDH_USE: number;
+        const SSL_OP_SSLEAY_080_CLIENT_DH_BUG: number;
+        const SSL_OP_SSLREF2_REUSE_CERT_TYPE_BUG: number;
+        const SSL_OP_TLS_BLOCK_PADDING_BUG: number;
+        const SSL_OP_TLS_D5_BUG: number;
+        /** Instructs OpenSSL to disable version rollback attack detection. */
+        const SSL_OP_TLS_ROLLBACK_BUG: number;
+        const ENGINE_METHOD_RSA: number;
+        const ENGINE_METHOD_DSA: number;
+        const ENGINE_METHOD_DH: number;
+        const ENGINE_METHOD_RAND: number;
+        const ENGINE_METHOD_EC: number;
+        const ENGINE_METHOD_CIPHERS: number;
+        const ENGINE_METHOD_DIGESTS: number;
+        const ENGINE_METHOD_PKEY_METHS: number;
+        const ENGINE_METHOD_PKEY_ASN1_METHS: number;
+        const ENGINE_METHOD_ALL: number;
+        const ENGINE_METHOD_NONE: number;
+        const DH_CHECK_P_NOT_SAFE_PRIME: number;
+        const DH_CHECK_P_NOT_PRIME: number;
+        const DH_UNABLE_TO_CHECK_GENERATOR: number;
+        const DH_NOT_SUITABLE_GENERATOR: number;
+        const ALPN_ENABLED: number;
+        const RSA_PKCS1_PADDING: number;
+        const RSA_SSLV23_PADDING: number;
+        const RSA_NO_PADDING: number;
+        const RSA_PKCS1_OAEP_PADDING: number;
+        const RSA_X931_PADDING: number;
+        const RSA_PKCS1_PSS_PADDING: number;
+        /** Sets the salt length for RSA_PKCS1_PSS_PADDING to the digest size when signing or verifying. */
+        const RSA_PSS_SALTLEN_DIGEST: number;
+        /** Sets the salt length for RSA_PKCS1_PSS_PADDING to the maximum permissible value when signing data. */
+        const RSA_PSS_SALTLEN_MAX_SIGN: number;
+        /** Causes the salt length for RSA_PKCS1_PSS_PADDING to be determined automatically when verifying a signature. */
+        const RSA_PSS_SALTLEN_AUTO: number;
+        const POINT_CONVERSION_COMPRESSED: number;
+        const POINT_CONVERSION_UNCOMPRESSED: number;
+        const POINT_CONVERSION_HYBRID: number;
+        /** Specifies the built-in default cipher list used by Node.js (colon-separated values). */
+        const defaultCoreCipherList: string;
+        /** Specifies the active default cipher list used by the current Node.js process  (colon-separated values). */
+        const defaultCipherList: string;
+    }
+    interface HashOptions extends stream.TransformOptions {
+        /**
+         * For XOF hash functions such as `shake256`, the
+         * outputLength option can be used to specify the desired output length in bytes.
+         */
+        outputLength?: number | undefined;
+    }
+    /** @deprecated since v10.0.0 */
+    const fips: boolean;
+    /**
+     * Creates and returns a `Hash` object that can be used to generate hash digests
+     * using the given `algorithm`. Optional `options` argument controls stream
+     * behavior. For XOF hash functions such as `'shake256'`, the `outputLength` option
+     * can be used to specify the desired output length in bytes.
+     *
+     * The `algorithm` is dependent on the available algorithms supported by the
+     * version of OpenSSL on the platform. Examples are `'sha256'`, `'sha512'`, etc.
+     * On recent releases of OpenSSL, `openssl list -digest-algorithms` will
+     * display the available digest algorithms.
+     *
+     * Example: generating the sha256 sum of a file
+     *
+     * ```js
+     * import {
+     *   createReadStream
+     * } from 'fs';
+     * import { argv } from 'process';
+     * const {
+     *   createHash
+     * } = await import('crypto');
+     *
+     * const filename = argv[2];
+     *
+     * const hash = createHash('sha256');
+     *
+     * const input = createReadStream(filename);
+     * input.on('readable', () => {
+     *   // Only one element is going to be produced by the
+     *   // hash stream.
+     *   const data = input.read();
+     *   if (data)
+     *     hash.update(data);
+     *   else {
+     *     console.log(`${hash.digest('hex')} ${filename}`);
+     *   }
+     * });
+     * ```
+     * @since v0.1.92
+     * @param options `stream.transform` options
+     */
+    function createHash(algorithm: string, options?: HashOptions): Hash;
+    /**
+     * Creates and returns an `Hmac` object that uses the given `algorithm` and `key`.
+     * Optional `options` argument controls stream behavior.
+     *
+     * The `algorithm` is dependent on the available algorithms supported by the
+     * version of OpenSSL on the platform. Examples are `'sha256'`, `'sha512'`, etc.
+     * On recent releases of OpenSSL, `openssl list -digest-algorithms` will
+     * display the available digest algorithms.
+     *
+     * The `key` is the HMAC key used to generate the cryptographic HMAC hash. If it is
+     * a `KeyObject`, its type must be `secret`.
+     *
+     * Example: generating the sha256 HMAC of a file
+     *
+     * ```js
+     * import {
+     *   createReadStream
+     * } from 'fs';
+     * import { argv } from 'process';
+     * const {
+     *   createHmac
+     * } = await import('crypto');
+     *
+     * const filename = argv[2];
+     *
+     * const hmac = createHmac('sha256', 'a secret');
+     *
+     * const input = createReadStream(filename);
+     * input.on('readable', () => {
+     *   // Only one element is going to be produced by the
+     *   // hash stream.
+     *   const data = input.read();
+     *   if (data)
+     *     hmac.update(data);
+     *   else {
+     *     console.log(`${hmac.digest('hex')} ${filename}`);
+     *   }
+     * });
+     * ```
+     * @since v0.1.94
+     * @param options `stream.transform` options
+     */
+    function createHmac(algorithm: string, key: BinaryLike | KeyObject, options?: stream.TransformOptions): Hmac;
+    // https://nodejs.org/api/buffer.html#buffer_buffers_and_character_encodings
+    type BinaryToTextEncoding = 'base64' | 'base64url' | 'hex' | 'binary';
+    type CharacterEncoding = 'utf8' | 'utf-8' | 'utf16le' | 'latin1';
+    type LegacyCharacterEncoding = 'ascii' | 'binary' | 'ucs2' | 'ucs-2';
+    type Encoding = BinaryToTextEncoding | CharacterEncoding | LegacyCharacterEncoding;
+    type ECDHKeyFormat = 'compressed' | 'uncompressed' | 'hybrid';
+    /**
+     * The `Hash` class is a utility for creating hash digests of data. It can be
+     * used in one of two ways:
+     *
+     * * As a `stream` that is both readable and writable, where data is written
+     * to produce a computed hash digest on the readable side, or
+     * * Using the `hash.update()` and `hash.digest()` methods to produce the
+     * computed hash.
+     *
+     * The {@link createHash} method is used to create `Hash` instances. `Hash`objects are not to be created directly using the `new` keyword.
+     *
+     * Example: Using `Hash` objects as streams:
+     *
+     * ```js
+     * const {
+     *   createHash
+     * } = await import('crypto');
+     *
+     * const hash = createHash('sha256');
+     *
+     * hash.on('readable', () => {
+     *   // Only one element is going to be produced by the
+     *   // hash stream.
+     *   const data = hash.read();
+     *   if (data) {
+     *     console.log(data.toString('hex'));
+     *     // Prints:
+     *     //   6a2da20943931e9834fc12cfe5bb47bbd9ae43489a30726962b576f4e3993e50
+     *   }
+     * });
+     *
+     * hash.write('some data to hash');
+     * hash.end();
+     * ```
+     *
+     * Example: Using `Hash` and piped streams:
+     *
+     * ```js
+     * import { createReadStream } from 'fs';
+     * import { stdout } from 'process';
+     * const { createHash } = await import('crypto');
+     *
+     * const hash = createHash('sha256');
+     *
+     * const input = createReadStream('test.js');
+     * input.pipe(hash).setEncoding('hex').pipe(stdout);
+     * ```
+     *
+     * Example: Using the `hash.update()` and `hash.digest()` methods:
+     *
+     * ```js
+     * const {
+     *   createHash
+     * } = await import('crypto');
+     *
+     * const hash = createHash('sha256');
+     *
+     * hash.update('some data to hash');
+     * console.log(hash.digest('hex'));
+     * // Prints:
+     * //   6a2da20943931e9834fc12cfe5bb47bbd9ae43489a30726962b576f4e3993e50
+     * ```
+     * @since v0.1.92
+     */
+    class Hash extends stream.Transform {
+        private constructor();
+        /**
+         * Creates a new `Hash` object that contains a deep copy of the internal state
+         * of the current `Hash` object.
+         *
+         * The optional `options` argument controls stream behavior. For XOF hash
+         * functions such as `'shake256'`, the `outputLength` option can be used to
+         * specify the desired output length in bytes.
+         *
+         * An error is thrown when an attempt is made to copy the `Hash` object after
+         * its `hash.digest()` method has been called.
+         *
+         * ```js
+         * // Calculate a rolling hash.
+         * const {
+         *   createHash
+         * } = await import('crypto');
+         *
+         * const hash = createHash('sha256');
+         *
+         * hash.update('one');
+         * console.log(hash.copy().digest('hex'));
+         *
+         * hash.update('two');
+         * console.log(hash.copy().digest('hex'));
+         *
+         * hash.update('three');
+         * console.log(hash.copy().digest('hex'));
+         *
+         * // Etc.
+         * ```
+         * @since v13.1.0
+         * @param options `stream.transform` options
+         */
+        copy(options?: stream.TransformOptions): Hash;
+        /**
+         * Updates the hash content with the given `data`, the encoding of which
+         * is given in `inputEncoding`.
+         * If `encoding` is not provided, and the `data` is a string, an
+         * encoding of `'utf8'` is enforced. If `data` is a `Buffer`, `TypedArray`, or`DataView`, then `inputEncoding` is ignored.
+         *
+         * This can be called many times with new data as it is streamed.
+         * @since v0.1.92
+         * @param inputEncoding The `encoding` of the `data` string.
+         */
+        update(data: BinaryLike): Hash;
+        update(data: string, inputEncoding: Encoding): Hash;
+        /**
+         * Calculates the digest of all of the data passed to be hashed (using the `hash.update()` method).
+         * If `encoding` is provided a string will be returned; otherwise
+         * a `Buffer` is returned.
+         *
+         * The `Hash` object can not be used again after `hash.digest()` method has been
+         * called. Multiple calls will cause an error to be thrown.
+         * @since v0.1.92
+         * @param encoding The `encoding` of the return value.
+         */
+        digest(): Buffer;
+        digest(encoding: BinaryToTextEncoding): string;
+    }
+    /**
+     * The `Hmac` class is a utility for creating cryptographic HMAC digests. It can
+     * be used in one of two ways:
+     *
+     * * As a `stream` that is both readable and writable, where data is written
+     * to produce a computed HMAC digest on the readable side, or
+     * * Using the `hmac.update()` and `hmac.digest()` methods to produce the
+     * computed HMAC digest.
+     *
+     * The {@link createHmac} method is used to create `Hmac` instances. `Hmac`objects are not to be created directly using the `new` keyword.
+     *
+     * Example: Using `Hmac` objects as streams:
+     *
+     * ```js
+     * const {
+     *   createHmac
+     * } = await import('crypto');
+     *
+     * const hmac = createHmac('sha256', 'a secret');
+     *
+     * hmac.on('readable', () => {
+     *   // Only one element is going to be produced by the
+     *   // hash stream.
+     *   const data = hmac.read();
+     *   if (data) {
+     *     console.log(data.toString('hex'));
+     *     // Prints:
+     *     //   7fd04df92f636fd450bc841c9418e5825c17f33ad9c87c518115a45971f7f77e
+     *   }
+     * });
+     *
+     * hmac.write('some data to hash');
+     * hmac.end();
+     * ```
+     *
+     * Example: Using `Hmac` and piped streams:
+     *
+     * ```js
+     * import { createReadStream } from 'fs';
+     * import { stdout } from 'process';
+     * const {
+     *   createHmac
+     * } = await import('crypto');
+     *
+     * const hmac = createHmac('sha256', 'a secret');
+     *
+     * const input = createReadStream('test.js');
+     * input.pipe(hmac).pipe(stdout);
+     * ```
+     *
+     * Example: Using the `hmac.update()` and `hmac.digest()` methods:
+     *
+     * ```js
+     * const {
+     *   createHmac
+     * } = await import('crypto');
+     *
+     * const hmac = createHmac('sha256', 'a secret');
+     *
+     * hmac.update('some data to hash');
+     * console.log(hmac.digest('hex'));
+     * // Prints:
+     * //   7fd04df92f636fd450bc841c9418e5825c17f33ad9c87c518115a45971f7f77e
+     * ```
+     * @since v0.1.94
+     */
+    class Hmac extends stream.Transform {
+        private constructor();
+        /**
+         * Updates the `Hmac` content with the given `data`, the encoding of which
+         * is given in `inputEncoding`.
+         * If `encoding` is not provided, and the `data` is a string, an
+         * encoding of `'utf8'` is enforced. If `data` is a `Buffer`, `TypedArray`, or`DataView`, then `inputEncoding` is ignored.
+         *
+         * This can be called many times with new data as it is streamed.
+         * @since v0.1.94
+         * @param inputEncoding The `encoding` of the `data` string.
+         */
+        update(data: BinaryLike): Hmac;
+        update(data: string, inputEncoding: Encoding): Hmac;
+        /**
+         * Calculates the HMAC digest of all of the data passed using `hmac.update()`.
+         * If `encoding` is
+         * provided a string is returned; otherwise a `Buffer` is returned;
+         *
+         * The `Hmac` object can not be used again after `hmac.digest()` has been
+         * called. Multiple calls to `hmac.digest()` will result in an error being thrown.
+         * @since v0.1.94
+         * @param encoding The `encoding` of the return value.
+         */
+        digest(): Buffer;
+        digest(encoding: BinaryToTextEncoding): string;
+    }
+    type KeyObjectType = 'secret' | 'public' | 'private';
+    interface KeyExportOptions<T extends KeyFormat> {
+        type: 'pkcs1' | 'spki' | 'pkcs8' | 'sec1';
+        format: T;
+        cipher?: string | undefined;
+        passphrase?: string | Buffer | undefined;
+    }
+    interface JwkKeyExportOptions {
+        format: 'jwk';
+    }
+    interface JsonWebKey {
+        crv?: string | undefined;
+        d?: string | undefined;
+        dp?: string | undefined;
+        dq?: string | undefined;
+        e?: string | undefined;
+        k?: string | undefined;
+        kty?: string | undefined;
+        n?: string | undefined;
+        p?: string | undefined;
+        q?: string | undefined;
+        qi?: string | undefined;
+        x?: string | undefined;
+        y?: string | undefined;
+        [key: string]: unknown;
+    }
+    interface AsymmetricKeyDetails {
+        /**
+         * Key size in bits (RSA, DSA).
+         */
+        modulusLength?: number | undefined;
+        /**
+         * Public exponent (RSA).
+         */
+        publicExponent?: bigint | undefined;
+        /**
+         * Name of the message digest (RSA-PSS).
+         */
+        hashAlgorithm?: string | undefined;
+        /**
+         * Name of the message digest used by MGF1 (RSA-PSS).
+         */
+        mgf1HashAlgorithm?: string | undefined;
+        /**
+         * Minimal salt length in bytes (RSA-PSS).
+         */
+        saltLength?: number | undefined;
+        /**
+         * Size of q in bits (DSA).
+         */
+        divisorLength?: number | undefined;
+        /**
+         * Name of the curve (EC).
+         */
+        namedCurve?: string | undefined;
+    }
+    /**
+     * Node.js uses a `KeyObject` class to represent a symmetric or asymmetric key,
+     * and each kind of key exposes different functions. The {@link createSecretKey}, {@link createPublicKey} and {@link createPrivateKey} methods are used to create `KeyObject`instances. `KeyObject`
+     * objects are not to be created directly using the `new`keyword.
+     *
+     * Most applications should consider using the new `KeyObject` API instead of
+     * passing keys as strings or `Buffer`s due to improved security features.
+     *
+     * `KeyObject` instances can be passed to other threads via `postMessage()`.
+     * The receiver obtains a cloned `KeyObject`, and the `KeyObject` does not need to
+     * be listed in the `transferList` argument.
+     * @since v11.6.0
+     */
+    class KeyObject {
+        private constructor();
+        /**
+         * Example: Converting a `CryptoKey` instance to a `KeyObject`:
+         *
+         * ```js
+         * const { webcrypto, KeyObject } = await import('crypto');
+         * const { subtle } = webcrypto;
+         *
+         * const key = await subtle.generateKey({
+         *   name: 'HMAC',
+         *   hash: 'SHA-256',
+         *   length: 256
+         * }, true, ['sign', 'verify']);
+         *
+         * const keyObject = KeyObject.from(key);
+         * console.log(keyObject.symmetricKeySize);
+         * // Prints: 32 (symmetric key size in bytes)
+         * ```
+         * @since v15.0.0
+         */
+        static from(key: webcrypto.CryptoKey): KeyObject;
+        /**
+         * For asymmetric keys, this property represents the type of the key. Supported key
+         * types are:
+         *
+         * * `'rsa'` (OID 1.2.840.113549.1.1.1)
+         * * `'rsa-pss'` (OID 1.2.840.113549.1.1.10)
+         * * `'dsa'` (OID 1.2.840.10040.4.1)
+         * * `'ec'` (OID 1.2.840.10045.2.1)
+         * * `'x25519'` (OID 1.3.101.110)
+         * * `'x448'` (OID 1.3.101.111)
+         * * `'ed25519'` (OID 1.3.101.112)
+         * * `'ed448'` (OID 1.3.101.113)
+         * * `'dh'` (OID 1.2.840.113549.1.3.1)
+         *
+         * This property is `undefined` for unrecognized `KeyObject` types and symmetric
+         * keys.
+         * @since v11.6.0
+         */
+        asymmetricKeyType?: KeyType | undefined;
+        /**
+         * For asymmetric keys, this property represents the size of the embedded key in
+         * bytes. This property is `undefined` for symmetric keys.
+         */
+        asymmetricKeySize?: number | undefined;
+        /**
+         * This property exists only on asymmetric keys. Depending on the type of the key,
+         * this object contains information about the key. None of the information obtained
+         * through this property can be used to uniquely identify a key or to compromise
+         * the security of the key.
+         *
+         * For RSA-PSS keys, if the key material contains a `RSASSA-PSS-params` sequence,
+         * the `hashAlgorithm`, `mgf1HashAlgorithm`, and `saltLength` properties will be
+         * set.
+         *
+         * Other key details might be exposed via this API using additional attributes.
+         * @since v15.7.0
+         */
+        asymmetricKeyDetails?: AsymmetricKeyDetails | undefined;
+        /**
+         * For symmetric keys, the following encoding options can be used:
+         *
+         * For public keys, the following encoding options can be used:
+         *
+         * For private keys, the following encoding options can be used:
+         *
+         * The result type depends on the selected encoding format, when PEM the
+         * result is a string, when DER it will be a buffer containing the data
+         * encoded as DER, when [JWK](https://tools.ietf.org/html/rfc7517) it will be an object.
+         *
+         * When [JWK](https://tools.ietf.org/html/rfc7517) encoding format was selected, all other encoding options are
+         * ignored.
+         *
+         * PKCS#1, SEC1, and PKCS#8 type keys can be encrypted by using a combination of
+         * the `cipher` and `format` options. The PKCS#8 `type` can be used with any`format` to encrypt any key algorithm (RSA, EC, or DH) by specifying a`cipher`. PKCS#1 and SEC1 can only be
+         * encrypted by specifying a `cipher`when the PEM `format` is used. For maximum compatibility, use PKCS#8 for
+         * encrypted private keys. Since PKCS#8 defines its own
+         * encryption mechanism, PEM-level encryption is not supported when encrypting
+         * a PKCS#8 key. See [RFC 5208](https://www.rfc-editor.org/rfc/rfc5208.txt) for PKCS#8 encryption and [RFC 1421](https://www.rfc-editor.org/rfc/rfc1421.txt) for
+         * PKCS#1 and SEC1 encryption.
+         * @since v11.6.0
+         */
+        export(options: KeyExportOptions<'pem'>): string | Buffer;
+        export(options?: KeyExportOptions<'der'>): Buffer;
+        export(options?: JwkKeyExportOptions): JsonWebKey;
+        /**
+         * For secret keys, this property represents the size of the key in bytes. This
+         * property is `undefined` for asymmetric keys.
+         * @since v11.6.0
+         */
+        symmetricKeySize?: number | undefined;
+        /**
+         * Depending on the type of this `KeyObject`, this property is either`'secret'` for secret (symmetric) keys, `'public'` for public (asymmetric) keys
+         * or `'private'` for private (asymmetric) keys.
+         * @since v11.6.0
+         */
+        type: KeyObjectType;
+    }
+    type CipherCCMTypes = 'aes-128-ccm' | 'aes-192-ccm' | 'aes-256-ccm' | 'chacha20-poly1305';
+    type CipherGCMTypes = 'aes-128-gcm' | 'aes-192-gcm' | 'aes-256-gcm';
+    type CipherOCBTypes = 'aes-128-ocb' | 'aes-192-ocb' | 'aes-256-ocb';
+    type BinaryLike = string | NodeJS.ArrayBufferView;
+    type CipherKey = BinaryLike | KeyObject;
+    interface CipherCCMOptions extends stream.TransformOptions {
+        authTagLength: number;
+    }
+    interface CipherGCMOptions extends stream.TransformOptions {
+        authTagLength?: number | undefined;
+    }
+    interface CipherOCBOptions extends stream.TransformOptions {
+        authTagLength: number;
+    }
+    /**
+     * Creates and returns a `Cipher` object that uses the given `algorithm` and`password`.
+     *
+     * The `options` argument controls stream behavior and is optional except when a
+     * cipher in CCM or OCB mode (e.g. `'aes-128-ccm'`) is used. In that case, the`authTagLength` option is required and specifies the length of the
+     * authentication tag in bytes, see `CCM mode`. In GCM mode, the `authTagLength`option is not required but can be used to set the length of the authentication
+     * tag that will be returned by `getAuthTag()` and defaults to 16 bytes.
+     * For `chacha20-poly1305`, the `authTagLength` option defaults to 16 bytes.
+     *
+     * The `algorithm` is dependent on OpenSSL, examples are `'aes192'`, etc. On
+     * recent OpenSSL releases, `openssl list -cipher-algorithms` will
+     * display the available cipher algorithms.
+     *
+     * The `password` is used to derive the cipher key and initialization vector (IV).
+     * The value must be either a `'latin1'` encoded string, a `Buffer`, a`TypedArray`, or a `DataView`.
+     *
+     * The implementation of `crypto.createCipher()` derives keys using the OpenSSL
+     * function [`EVP_BytesToKey`](https://www.openssl.org/docs/man1.1.0/crypto/EVP_BytesToKey.html) with the digest algorithm set to MD5, one
+     * iteration, and no salt. The lack of salt allows dictionary attacks as the same
+     * password always creates the same key. The low iteration count and
+     * non-cryptographically secure hash algorithm allow passwords to be tested very
+     * rapidly.
+     *
+     * In line with OpenSSL's recommendation to use a more modern algorithm instead of [`EVP_BytesToKey`](https://www.openssl.org/docs/man1.1.0/crypto/EVP_BytesToKey.html) it is recommended that
+     * developers derive a key and IV on
+     * their own using {@link scrypt} and to use {@link createCipheriv} to create the `Cipher` object. Users should not use ciphers with counter mode
+     * (e.g. CTR, GCM, or CCM) in `crypto.createCipher()`. A warning is emitted when
+     * they are used in order to avoid the risk of IV reuse that causes
+     * vulnerabilities. For the case when IV is reused in GCM, see [Nonce-Disrespecting Adversaries](https://github.com/nonce-disrespect/nonce-disrespect) for details.
+     * @since v0.1.94
+     * @deprecated Since v10.0.0 - Use {@link createCipheriv} instead.
+     * @param options `stream.transform` options
+     */
+    function createCipher(algorithm: CipherCCMTypes, password: BinaryLike, options: CipherCCMOptions): CipherCCM;
+    /** @deprecated since v10.0.0 use `createCipheriv()` */
+    function createCipher(algorithm: CipherGCMTypes, password: BinaryLike, options?: CipherGCMOptions): CipherGCM;
+    /** @deprecated since v10.0.0 use `createCipheriv()` */
+    function createCipher(algorithm: string, password: BinaryLike, options?: stream.TransformOptions): Cipher;
+    /**
+     * Creates and returns a `Cipher` object, with the given `algorithm`, `key` and
+     * initialization vector (`iv`).
+     *
+     * The `options` argument controls stream behavior and is optional except when a
+     * cipher in CCM or OCB mode (e.g. `'aes-128-ccm'`) is used. In that case, the`authTagLength` option is required and specifies the length of the
+     * authentication tag in bytes, see `CCM mode`. In GCM mode, the `authTagLength`option is not required but can be used to set the length of the authentication
+     * tag that will be returned by `getAuthTag()` and defaults to 16 bytes.
+     * For `chacha20-poly1305`, the `authTagLength` option defaults to 16 bytes.
+     *
+     * The `algorithm` is dependent on OpenSSL, examples are `'aes192'`, etc. On
+     * recent OpenSSL releases, `openssl list -cipher-algorithms` will
+     * display the available cipher algorithms.
+     *
+     * The `key` is the raw key used by the `algorithm` and `iv` is an [initialization vector](https://en.wikipedia.org/wiki/Initialization_vector). Both arguments must be `'utf8'` encoded
+     * strings,`Buffers`, `TypedArray`, or `DataView`s. The `key` may optionally be
+     * a `KeyObject` of type `secret`. If the cipher does not need
+     * an initialization vector, `iv` may be `null`.
+     *
+     * When passing strings for `key` or `iv`, please consider `caveats when using strings as inputs to cryptographic APIs`.
+     *
+     * Initialization vectors should be unpredictable and unique; ideally, they will be
+     * cryptographically random. They do not have to be secret: IVs are typically just
+     * added to ciphertext messages unencrypted. It may sound contradictory that
+     * something has to be unpredictable and unique, but does not have to be secret;
+     * remember that an attacker must not be able to predict ahead of time what a
+     * given IV will be.
+     * @since v0.1.94
+     * @param options `stream.transform` options
+     */
+    function createCipheriv(algorithm: CipherCCMTypes, key: CipherKey, iv: BinaryLike, options: CipherCCMOptions): CipherCCM;
+    function createCipheriv(algorithm: CipherOCBTypes, key: CipherKey, iv: BinaryLike, options: CipherOCBOptions): CipherOCB;
+    function createCipheriv(algorithm: CipherGCMTypes, key: CipherKey, iv: BinaryLike, options?: CipherGCMOptions): CipherGCM;
+    function createCipheriv(algorithm: string, key: CipherKey, iv: BinaryLike | null, options?: stream.TransformOptions): Cipher;
+    /**
+     * Instances of the `Cipher` class are used to encrypt data. The class can be
+     * used in one of two ways:
+     *
+     * * As a `stream` that is both readable and writable, where plain unencrypted
+     * data is written to produce encrypted data on the readable side, or
+     * * Using the `cipher.update()` and `cipher.final()` methods to produce
+     * the encrypted data.
+     *
+     * The {@link createCipher} or {@link createCipheriv} methods are
+     * used to create `Cipher` instances. `Cipher` objects are not to be created
+     * directly using the `new` keyword.
+     *
+     * Example: Using `Cipher` objects as streams:
+     *
+     * ```js
+     * const {
+     *   scrypt,
+     *   randomFill,
+     *   createCipheriv
+     * } = await import('crypto');
+     *
+     * const algorithm = 'aes-192-cbc';
+     * const password = 'Password used to generate key';
+     *
+     * // First, we'll generate the key. The key length is dependent on the algorithm.
+     * // In this case for aes192, it is 24 bytes (192 bits).
+     * scrypt(password, 'salt', 24, (err, key) => {
+     *   if (err) throw err;
+     *   // Then, we'll generate a random initialization vector
+     *   randomFill(new Uint8Array(16), (err, iv) => {
+     *     if (err) throw err;
+     *
+     *     // Once we have the key and iv, we can create and use the cipher...
+     *     const cipher = createCipheriv(algorithm, key, iv);
+     *
+     *     let encrypted = '';
+     *     cipher.setEncoding('hex');
+     *
+     *     cipher.on('data', (chunk) => encrypted += chunk);
+     *     cipher.on('end', () => console.log(encrypted));
+     *
+     *     cipher.write('some clear text data');
+     *     cipher.end();
+     *   });
+     * });
+     * ```
+     *
+     * Example: Using `Cipher` and piped streams:
+     *
+     * ```js
+     * import {
+     *   createReadStream,
+     *   createWriteStream,
+     * } from 'fs';
+     *
+     * import {
+     *   pipeline
+     * } from 'stream';
+     *
+     * const {
+     *   scrypt,
+     *   randomFill,
+     *   createCipheriv
+     * } = await import('crypto');
+     *
+     * const algorithm = 'aes-192-cbc';
+     * const password = 'Password used to generate key';
+     *
+     * // First, we'll generate the key. The key length is dependent on the algorithm.
+     * // In this case for aes192, it is 24 bytes (192 bits).
+     * scrypt(password, 'salt', 24, (err, key) => {
+     *   if (err) throw err;
+     *   // Then, we'll generate a random initialization vector
+     *   randomFill(new Uint8Array(16), (err, iv) => {
+     *     if (err) throw err;
+     *
+     *     const cipher = createCipheriv(algorithm, key, iv);
+     *
+     *     const input = createReadStream('test.js');
+     *     const output = createWriteStream('test.enc');
+     *
+     *     pipeline(input, cipher, output, (err) => {
+     *       if (err) throw err;
+     *     });
+     *   });
+     * });
+     * ```
+     *
+     * Example: Using the `cipher.update()` and `cipher.final()` methods:
+     *
+     * ```js
+     * const {
+     *   scrypt,
+     *   randomFill,
+     *   createCipheriv
+     * } = await import('crypto');
+     *
+     * const algorithm = 'aes-192-cbc';
+     * const password = 'Password used to generate key';
+     *
+     * // First, we'll generate the key. The key length is dependent on the algorithm.
+     * // In this case for aes192, it is 24 bytes (192 bits).
+     * scrypt(password, 'salt', 24, (err, key) => {
+     *   if (err) throw err;
+     *   // Then, we'll generate a random initialization vector
+     *   randomFill(new Uint8Array(16), (err, iv) => {
+     *     if (err) throw err;
+     *
+     *     const cipher = createCipheriv(algorithm, key, iv);
+     *
+     *     let encrypted = cipher.update('some clear text data', 'utf8', 'hex');
+     *     encrypted += cipher.final('hex');
+     *     console.log(encrypted);
+     *   });
+     * });
+     * ```
+     * @since v0.1.94
+     */
+    class Cipher extends stream.Transform {
+        private constructor();
+        /**
+         * Updates the cipher with `data`. If the `inputEncoding` argument is given,
+         * the `data`argument is a string using the specified encoding. If the `inputEncoding`argument is not given, `data` must be a `Buffer`, `TypedArray`, or`DataView`. If `data` is a `Buffer`,
+         * `TypedArray`, or `DataView`, then`inputEncoding` is ignored.
+         *
+         * The `outputEncoding` specifies the output format of the enciphered
+         * data. If the `outputEncoding`is specified, a string using the specified encoding is returned. If no`outputEncoding` is provided, a `Buffer` is returned.
+         *
+         * The `cipher.update()` method can be called multiple times with new data until `cipher.final()` is called. Calling `cipher.update()` after `cipher.final()` will result in an error being
+         * thrown.
+         * @since v0.1.94
+         * @param inputEncoding The `encoding` of the data.
+         * @param outputEncoding The `encoding` of the return value.
+         */
+        update(data: BinaryLike): Buffer;
+        update(data: string, inputEncoding: Encoding): Buffer;
+        update(data: NodeJS.ArrayBufferView, inputEncoding: undefined, outputEncoding: Encoding): string;
+        update(data: string, inputEncoding: Encoding | undefined, outputEncoding: Encoding): string;
+        /**
+         * Once the `cipher.final()` method has been called, the `Cipher` object can no
+         * longer be used to encrypt data. Attempts to call `cipher.final()` more than
+         * once will result in an error being thrown.
+         * @since v0.1.94
+         * @param outputEncoding The `encoding` of the return value.
+         * @return Any remaining enciphered contents. If `outputEncoding` is specified, a string is returned. If an `outputEncoding` is not provided, a {@link Buffer} is returned.
+         */
+        final(): Buffer;
+        final(outputEncoding: BufferEncoding): string;
+        /**
+         * When using block encryption algorithms, the `Cipher` class will automatically
+         * add padding to the input data to the appropriate block size. To disable the
+         * default padding call `cipher.setAutoPadding(false)`.
+         *
+         * When `autoPadding` is `false`, the length of the entire input data must be a
+         * multiple of the cipher's block size or `cipher.final()` will throw an error.
+         * Disabling automatic padding is useful for non-standard padding, for instance
+         * using `0x0` instead of PKCS padding.
+         *
+         * The `cipher.setAutoPadding()` method must be called before `cipher.final()`.
+         * @since v0.7.1
+         * @param [autoPadding=true]
+         * @return for method chaining.
+         */
+        setAutoPadding(autoPadding?: boolean): this;
+    }
+    interface CipherCCM extends Cipher {
+        setAAD(
+            buffer: NodeJS.ArrayBufferView,
+            options: {
+                plaintextLength: number;
+            }
+        ): this;
+        getAuthTag(): Buffer;
+    }
+    interface CipherGCM extends Cipher {
+        setAAD(
+            buffer: NodeJS.ArrayBufferView,
+            options?: {
+                plaintextLength: number;
+            }
+        ): this;
+        getAuthTag(): Buffer;
+    }
+    interface CipherOCB extends Cipher {
+        setAAD(
+            buffer: NodeJS.ArrayBufferView,
+            options?: {
+                plaintextLength: number;
+            }
+        ): this;
+        getAuthTag(): Buffer;
+    }
+    /**
+     * Creates and returns a `Decipher` object that uses the given `algorithm` and`password` (key).
+     *
+     * The `options` argument controls stream behavior and is optional except when a
+     * cipher in CCM or OCB mode (e.g. `'aes-128-ccm'`) is used. In that case, the`authTagLength` option is required and specifies the length of the
+     * authentication tag in bytes, see `CCM mode`.
+     * For `chacha20-poly1305`, the `authTagLength` option defaults to 16 bytes.
+     *
+     * The implementation of `crypto.createDecipher()` derives keys using the OpenSSL
+     * function [`EVP_BytesToKey`](https://www.openssl.org/docs/man1.1.0/crypto/EVP_BytesToKey.html) with the digest algorithm set to MD5, one
+     * iteration, and no salt. The lack of salt allows dictionary attacks as the same
+     * password always creates the same key. The low iteration count and
+     * non-cryptographically secure hash algorithm allow passwords to be tested very
+     * rapidly.
+     *
+     * In line with OpenSSL's recommendation to use a more modern algorithm instead of [`EVP_BytesToKey`](https://www.openssl.org/docs/man1.1.0/crypto/EVP_BytesToKey.html) it is recommended that
+     * developers derive a key and IV on
+     * their own using {@link scrypt} and to use {@link createDecipheriv} to create the `Decipher` object.
+     * @since v0.1.94
+     * @deprecated Since v10.0.0 - Use {@link createDecipheriv} instead.
+     * @param options `stream.transform` options
+     */
+    function createDecipher(algorithm: CipherCCMTypes, password: BinaryLike, options: CipherCCMOptions): DecipherCCM;
+    /** @deprecated since v10.0.0 use `createDecipheriv()` */
+    function createDecipher(algorithm: CipherGCMTypes, password: BinaryLike, options?: CipherGCMOptions): DecipherGCM;
+    /** @deprecated since v10.0.0 use `createDecipheriv()` */
+    function createDecipher(algorithm: string, password: BinaryLike, options?: stream.TransformOptions): Decipher;
+    /**
+     * Creates and returns a `Decipher` object that uses the given `algorithm`, `key`and initialization vector (`iv`).
+     *
+     * The `options` argument controls stream behavior and is optional except when a
+     * cipher in CCM or OCB mode (e.g. `'aes-128-ccm'`) is used. In that case, the`authTagLength` option is required and specifies the length of the
+     * authentication tag in bytes, see `CCM mode`. In GCM mode, the `authTagLength`option is not required but can be used to restrict accepted authentication tags
+     * to those with the specified length.
+     * For `chacha20-poly1305`, the `authTagLength` option defaults to 16 bytes.
+     *
+     * The `algorithm` is dependent on OpenSSL, examples are `'aes192'`, etc. On
+     * recent OpenSSL releases, `openssl list -cipher-algorithms` will
+     * display the available cipher algorithms.
+     *
+     * The `key` is the raw key used by the `algorithm` and `iv` is an [initialization vector](https://en.wikipedia.org/wiki/Initialization_vector). Both arguments must be `'utf8'` encoded
+     * strings,`Buffers`, `TypedArray`, or `DataView`s. The `key` may optionally be
+     * a `KeyObject` of type `secret`. If the cipher does not need
+     * an initialization vector, `iv` may be `null`.
+     *
+     * When passing strings for `key` or `iv`, please consider `caveats when using strings as inputs to cryptographic APIs`.
+     *
+     * Initialization vectors should be unpredictable and unique; ideally, they will be
+     * cryptographically random. They do not have to be secret: IVs are typically just
+     * added to ciphertext messages unencrypted. It may sound contradictory that
+     * something has to be unpredictable and unique, but does not have to be secret;
+     * remember that an attacker must not be able to predict ahead of time what a given
+     * IV will be.
+     * @since v0.1.94
+     * @param options `stream.transform` options
+     */
+    function createDecipheriv(algorithm: CipherCCMTypes, key: CipherKey, iv: BinaryLike, options: CipherCCMOptions): DecipherCCM;
+    function createDecipheriv(algorithm: CipherOCBTypes, key: CipherKey, iv: BinaryLike, options: CipherOCBOptions): DecipherOCB;
+    function createDecipheriv(algorithm: CipherGCMTypes, key: CipherKey, iv: BinaryLike, options?: CipherGCMOptions): DecipherGCM;
+    function createDecipheriv(algorithm: string, key: CipherKey, iv: BinaryLike | null, options?: stream.TransformOptions): Decipher;
+    /**
+     * Instances of the `Decipher` class are used to decrypt data. The class can be
+     * used in one of two ways:
+     *
+     * * As a `stream` that is both readable and writable, where plain encrypted
+     * data is written to produce unencrypted data on the readable side, or
+     * * Using the `decipher.update()` and `decipher.final()` methods to
+     * produce the unencrypted data.
+     *
+     * The {@link createDecipher} or {@link createDecipheriv} methods are
+     * used to create `Decipher` instances. `Decipher` objects are not to be created
+     * directly using the `new` keyword.
+     *
+     * Example: Using `Decipher` objects as streams:
+     *
+     * ```js
+     * import { Buffer } from 'buffer';
+     * const {
+     *   scryptSync,
+     *   createDecipheriv
+     * } = await import('crypto');
+     *
+     * const algorithm = 'aes-192-cbc';
+     * const password = 'Password used to generate key';
+     * // Key length is dependent on the algorithm. In this case for aes192, it is
+     * // 24 bytes (192 bits).
+     * // Use the async `crypto.scrypt()` instead.
+     * const key = scryptSync(password, 'salt', 24);
+     * // The IV is usually passed along with the ciphertext.
+     * const iv = Buffer.alloc(16, 0); // Initialization vector.
+     *
+     * const decipher = createDecipheriv(algorithm, key, iv);
+     *
+     * let decrypted = '';
+     * decipher.on('readable', () => {
+     *   while (null !== (chunk = decipher.read())) {
+     *     decrypted += chunk.toString('utf8');
+     *   }
+     * });
+     * decipher.on('end', () => {
+     *   console.log(decrypted);
+     *   // Prints: some clear text data
+     * });
+     *
+     * // Encrypted with same algorithm, key and iv.
+     * const encrypted =
+     *   'e5f79c5915c02171eec6b212d5520d44480993d7d622a7c4c2da32f6efda0ffa';
+     * decipher.write(encrypted, 'hex');
+     * decipher.end();
+     * ```
+     *
+     * Example: Using `Decipher` and piped streams:
+     *
+     * ```js
+     * import {
+     *   createReadStream,
+     *   createWriteStream,
+     * } from 'fs';
+     * import { Buffer } from 'buffer';
+     * const {
+     *   scryptSync,
+     *   createDecipheriv
+     * } = await import('crypto');
+     *
+     * const algorithm = 'aes-192-cbc';
+     * const password = 'Password used to generate key';
+     * // Use the async `crypto.scrypt()` instead.
+     * const key = scryptSync(password, 'salt', 24);
+     * // The IV is usually passed along with the ciphertext.
+     * const iv = Buffer.alloc(16, 0); // Initialization vector.
+     *
+     * const decipher = createDecipheriv(algorithm, key, iv);
+     *
+     * const input = createReadStream('test.enc');
+     * const output = createWriteStream('test.js');
+     *
+     * input.pipe(decipher).pipe(output);
+     * ```
+     *
+     * Example: Using the `decipher.update()` and `decipher.final()` methods:
+     *
+     * ```js
+     * import { Buffer } from 'buffer';
+     * const {
+     *   scryptSync,
+     *   createDecipheriv
+     * } = await import('crypto');
+     *
+     * const algorithm = 'aes-192-cbc';
+     * const password = 'Password used to generate key';
+     * // Use the async `crypto.scrypt()` instead.
+     * const key = scryptSync(password, 'salt', 24);
+     * // The IV is usually passed along with the ciphertext.
+     * const iv = Buffer.alloc(16, 0); // Initialization vector.
+     *
+     * const decipher = createDecipheriv(algorithm, key, iv);
+     *
+     * // Encrypted using same algorithm, key and iv.
+     * const encrypted =
+     *   'e5f79c5915c02171eec6b212d5520d44480993d7d622a7c4c2da32f6efda0ffa';
+     * let decrypted = decipher.update(encrypted, 'hex', 'utf8');
+     * decrypted += decipher.final('utf8');
+     * console.log(decrypted);
+     * // Prints: some clear text data
+     * ```
+     * @since v0.1.94
+     */
+    class Decipher extends stream.Transform {
+        private constructor();
+        /**
+         * Updates the decipher with `data`. If the `inputEncoding` argument is given,
+         * the `data`argument is a string using the specified encoding. If the `inputEncoding`argument is not given, `data` must be a `Buffer`. If `data` is a `Buffer` then `inputEncoding` is
+         * ignored.
+         *
+         * The `outputEncoding` specifies the output format of the enciphered
+         * data. If the `outputEncoding`is specified, a string using the specified encoding is returned. If no`outputEncoding` is provided, a `Buffer` is returned.
+         *
+         * The `decipher.update()` method can be called multiple times with new data until `decipher.final()` is called. Calling `decipher.update()` after `decipher.final()` will result in an error
+         * being thrown.
+         * @since v0.1.94
+         * @param inputEncoding The `encoding` of the `data` string.
+         * @param outputEncoding The `encoding` of the return value.
+         */
+        update(data: NodeJS.ArrayBufferView): Buffer;
+        update(data: string, inputEncoding: Encoding): Buffer;
+        update(data: NodeJS.ArrayBufferView, inputEncoding: undefined, outputEncoding: Encoding): string;
+        update(data: string, inputEncoding: Encoding | undefined, outputEncoding: Encoding): string;
+        /**
+         * Once the `decipher.final()` method has been called, the `Decipher` object can
+         * no longer be used to decrypt data. Attempts to call `decipher.final()` more
+         * than once will result in an error being thrown.
+         * @since v0.1.94
+         * @param outputEncoding The `encoding` of the return value.
+         * @return Any remaining deciphered contents. If `outputEncoding` is specified, a string is returned. If an `outputEncoding` is not provided, a {@link Buffer} is returned.
+         */
+        final(): Buffer;
+        final(outputEncoding: BufferEncoding): string;
+        /**
+         * When data has been encrypted without standard block padding, calling`decipher.setAutoPadding(false)` will disable automatic padding to prevent `decipher.final()` from checking for and
+         * removing padding.
+         *
+         * Turning auto padding off will only work if the input data's length is a
+         * multiple of the ciphers block size.
+         *
+         * The `decipher.setAutoPadding()` method must be called before `decipher.final()`.
+         * @since v0.7.1
+         * @param [autoPadding=true]
+         * @return for method chaining.
+         */
+        setAutoPadding(auto_padding?: boolean): this;
+    }
+    interface DecipherCCM extends Decipher {
+        setAuthTag(buffer: NodeJS.ArrayBufferView): this;
+        setAAD(
+            buffer: NodeJS.ArrayBufferView,
+            options: {
+                plaintextLength: number;
+            }
+        ): this;
+    }
+    interface DecipherGCM extends Decipher {
+        setAuthTag(buffer: NodeJS.ArrayBufferView): this;
+        setAAD(
+            buffer: NodeJS.ArrayBufferView,
+            options?: {
+                plaintextLength: number;
+            }
+        ): this;
+    }
+    interface DecipherOCB extends Decipher {
+        setAuthTag(buffer: NodeJS.ArrayBufferView): this;
+        setAAD(
+            buffer: NodeJS.ArrayBufferView,
+            options?: {
+                plaintextLength: number;
+            }
+        ): this;
+    }
+    interface PrivateKeyInput {
+        key: string | Buffer;
+        format?: KeyFormat | undefined;
+        type?: 'pkcs1' | 'pkcs8' | 'sec1' | undefined;
+        passphrase?: string | Buffer | undefined;
+    }
+    interface PublicKeyInput {
+        key: string | Buffer;
+        format?: KeyFormat | undefined;
+        type?: 'pkcs1' | 'spki' | undefined;
+    }
+    /**
+     * Asynchronously generates a new random secret key of the given `length`. The`type` will determine which validations will be performed on the `length`.
+     *
+     * ```js
+     * const {
+     *   generateKey
+     * } = await import('crypto');
+     *
+     * generateKey('hmac', { length: 64 }, (err, key) => {
+     *   if (err) throw err;
+     *   console.log(key.export().toString('hex'));  // 46e..........620
+     * });
+     * ```
+     * @since v15.0.0
+     * @param type The intended use of the generated secret key. Currently accepted values are `'hmac'` and `'aes'`.
+     */
+    function generateKey(
+        type: 'hmac' | 'aes',
+        options: {
+            length: number;
+        },
+        callback: (err: Error | null, key: KeyObject) => void
+    ): void;
+    /**
+     * Synchronously generates a new random secret key of the given `length`. The`type` will determine which validations will be performed on the `length`.
+     *
+     * ```js
+     * const {
+     *   generateKeySync
+     * } = await import('crypto');
+     *
+     * const key = generateKeySync('hmac', { length: 64 });
+     * console.log(key.export().toString('hex'));  // e89..........41e
+     * ```
+     * @since v15.0.0
+     * @param type The intended use of the generated secret key. Currently accepted values are `'hmac'` and `'aes'`.
+     */
+    function generateKeySync(
+        type: 'hmac' | 'aes',
+        options: {
+            length: number;
+        }
+    ): KeyObject;
+    interface JsonWebKeyInput {
+        key: JsonWebKey;
+        format: 'jwk';
+    }
+    /**
+     * Creates and returns a new key object containing a private key. If `key` is a
+     * string or `Buffer`, `format` is assumed to be `'pem'`; otherwise, `key`must be an object with the properties described above.
+     *
+     * If the private key is encrypted, a `passphrase` must be specified. The length
+     * of the passphrase is limited to 1024 bytes.
+     * @since v11.6.0
+     */
+    function createPrivateKey(key: PrivateKeyInput | string | Buffer | JsonWebKeyInput): KeyObject;
+    /**
+     * Creates and returns a new key object containing a public key. If `key` is a
+     * string or `Buffer`, `format` is assumed to be `'pem'`; if `key` is a `KeyObject`with type `'private'`, the public key is derived from the given private key;
+     * otherwise, `key` must be an object with the properties described above.
+     *
+     * If the format is `'pem'`, the `'key'` may also be an X.509 certificate.
+     *
+     * Because public keys can be derived from private keys, a private key may be
+     * passed instead of a public key. In that case, this function behaves as if {@link createPrivateKey} had been called, except that the type of the
+     * returned `KeyObject` will be `'public'` and that the private key cannot be
+     * extracted from the returned `KeyObject`. Similarly, if a `KeyObject` with type`'private'` is given, a new `KeyObject` with type `'public'` will be returned
+     * and it will be impossible to extract the private key from the returned object.
+     * @since v11.6.0
+     */
+    function createPublicKey(key: PublicKeyInput | string | Buffer | KeyObject | JsonWebKeyInput): KeyObject;
+    /**
+     * Creates and returns a new key object containing a secret key for symmetric
+     * encryption or `Hmac`.
+     * @since v11.6.0
+     * @param encoding The string encoding when `key` is a string.
+     */
+    function createSecretKey(key: NodeJS.ArrayBufferView): KeyObject;
+    function createSecretKey(key: string, encoding: BufferEncoding): KeyObject;
+    /**
+     * Creates and returns a `Sign` object that uses the given `algorithm`. Use {@link getHashes} to obtain the names of the available digest algorithms.
+     * Optional `options` argument controls the `stream.Writable` behavior.
+     *
+     * In some cases, a `Sign` instance can be created using the name of a signature
+     * algorithm, such as `'RSA-SHA256'`, instead of a digest algorithm. This will use
+     * the corresponding digest algorithm. This does not work for all signature
+     * algorithms, such as `'ecdsa-with-SHA256'`, so it is best to always use digest
+     * algorithm names.
+     * @since v0.1.92
+     * @param options `stream.Writable` options
+     */
+    function createSign(algorithm: string, options?: stream.WritableOptions): Sign;
+    type DSAEncoding = 'der' | 'ieee-p1363';
+    interface SigningOptions {
+        /**
+         * @See crypto.constants.RSA_PKCS1_PADDING
+         */
+        padding?: number | undefined;
+        saltLength?: number | undefined;
+        dsaEncoding?: DSAEncoding | undefined;
+    }
+    interface SignPrivateKeyInput extends PrivateKeyInput, SigningOptions {}
+    interface SignKeyObjectInput extends SigningOptions {
+        key: KeyObject;
+    }
+    interface VerifyPublicKeyInput extends PublicKeyInput, SigningOptions {}
+    interface VerifyKeyObjectInput extends SigningOptions {
+        key: KeyObject;
+    }
+    type KeyLike = string | Buffer | KeyObject;
+    /**
+     * The `Sign` class is a utility for generating signatures. It can be used in one
+     * of two ways:
+     *
+     * * As a writable `stream`, where data to be signed is written and the `sign.sign()` method is used to generate and return the signature, or
+     * * Using the `sign.update()` and `sign.sign()` methods to produce the
+     * signature.
+     *
+     * The {@link createSign} method is used to create `Sign` instances. The
+     * argument is the string name of the hash function to use. `Sign` objects are not
+     * to be created directly using the `new` keyword.
+     *
+     * Example: Using `Sign` and `Verify` objects as streams:
+     *
+     * ```js
+     * const {
+     *   generateKeyPairSync,
+     *   createSign,
+     *   createVerify
+     * } = await import('crypto');
+     *
+     * const { privateKey, publicKey } = generateKeyPairSync('ec', {
+     *   namedCurve: 'sect239k1'
+     * });
+     *
+     * const sign = createSign('SHA256');
+     * sign.write('some data to sign');
+     * sign.end();
+     * const signature = sign.sign(privateKey, 'hex');
+     *
+     * const verify = createVerify('SHA256');
+     * verify.write('some data to sign');
+     * verify.end();
+     * console.log(verify.verify(publicKey, signature, 'hex'));
+     * // Prints: true
+     * ```
+     *
+     * Example: Using the `sign.update()` and `verify.update()` methods:
+     *
+     * ```js
+     * const {
+     *   generateKeyPairSync,
+     *   createSign,
+     *   createVerify
+     * } = await import('crypto');
+     *
+     * const { privateKey, publicKey } = generateKeyPairSync('rsa', {
+     *   modulusLength: 2048,
+     * });
+     *
+     * const sign = createSign('SHA256');
+     * sign.update('some data to sign');
+     * sign.end();
+     * const signature = sign.sign(privateKey);
+     *
+     * const verify = createVerify('SHA256');
+     * verify.update('some data to sign');
+     * verify.end();
+     * console.log(verify.verify(publicKey, signature));
+     * // Prints: true
+     * ```
+     * @since v0.1.92
+     */
+    class Sign extends stream.Writable {
+        private constructor();
+        /**
+         * Updates the `Sign` content with the given `data`, the encoding of which
+         * is given in `inputEncoding`.
+         * If `encoding` is not provided, and the `data` is a string, an
+         * encoding of `'utf8'` is enforced. If `data` is a `Buffer`, `TypedArray`, or`DataView`, then `inputEncoding` is ignored.
+         *
+         * This can be called many times with new data as it is streamed.
+         * @since v0.1.92
+         * @param inputEncoding The `encoding` of the `data` string.
+         */
+        update(data: BinaryLike): this;
+        update(data: string, inputEncoding: Encoding): this;
+        /**
+         * Calculates the signature on all the data passed through using either `sign.update()` or `sign.write()`.
+         *
+         * If `privateKey` is not a `KeyObject`, this function behaves as if`privateKey` had been passed to {@link createPrivateKey}. If it is an
+         * object, the following additional properties can be passed:
+         *
+         * If `outputEncoding` is provided a string is returned; otherwise a `Buffer` is returned.
+         *
+         * The `Sign` object can not be again used after `sign.sign()` method has been
+         * called. Multiple calls to `sign.sign()` will result in an error being thrown.
+         * @since v0.1.92
+         */
+        sign(privateKey: KeyLike | SignKeyObjectInput | SignPrivateKeyInput): Buffer;
+        sign(privateKey: KeyLike | SignKeyObjectInput | SignPrivateKeyInput, outputFormat: BinaryToTextEncoding): string;
+    }
+    /**
+     * Creates and returns a `Verify` object that uses the given algorithm.
+     * Use {@link getHashes} to obtain an array of names of the available
+     * signing algorithms. Optional `options` argument controls the`stream.Writable` behavior.
+     *
+     * In some cases, a `Verify` instance can be created using the name of a signature
+     * algorithm, such as `'RSA-SHA256'`, instead of a digest algorithm. This will use
+     * the corresponding digest algorithm. This does not work for all signature
+     * algorithms, such as `'ecdsa-with-SHA256'`, so it is best to always use digest
+     * algorithm names.
+     * @since v0.1.92
+     * @param options `stream.Writable` options
+     */
+    function createVerify(algorithm: string, options?: stream.WritableOptions): Verify;
+    /**
+     * The `Verify` class is a utility for verifying signatures. It can be used in one
+     * of two ways:
+     *
+     * * As a writable `stream` where written data is used to validate against the
+     * supplied signature, or
+     * * Using the `verify.update()` and `verify.verify()` methods to verify
+     * the signature.
+     *
+     * The {@link createVerify} method is used to create `Verify` instances.`Verify` objects are not to be created directly using the `new` keyword.
+     *
+     * See `Sign` for examples.
+     * @since v0.1.92
+     */
+    class Verify extends stream.Writable {
+        private constructor();
+        /**
+         * Updates the `Verify` content with the given `data`, the encoding of which
+         * is given in `inputEncoding`.
+         * If `inputEncoding` is not provided, and the `data` is a string, an
+         * encoding of `'utf8'` is enforced. If `data` is a `Buffer`, `TypedArray`, or`DataView`, then `inputEncoding` is ignored.
+         *
+         * This can be called many times with new data as it is streamed.
+         * @since v0.1.92
+         * @param inputEncoding The `encoding` of the `data` string.
+         */
+        update(data: BinaryLike): Verify;
+        update(data: string, inputEncoding: Encoding): Verify;
+        /**
+         * Verifies the provided data using the given `object` and `signature`.
+         *
+         * If `object` is not a `KeyObject`, this function behaves as if`object` had been passed to {@link createPublicKey}. If it is an
+         * object, the following additional properties can be passed:
+         *
+         * The `signature` argument is the previously calculated signature for the data, in
+         * the `signatureEncoding`.
+         * If a `signatureEncoding` is specified, the `signature` is expected to be a
+         * string; otherwise `signature` is expected to be a `Buffer`,`TypedArray`, or `DataView`.
+         *
+         * The `verify` object can not be used again after `verify.verify()` has been
+         * called. Multiple calls to `verify.verify()` will result in an error being
+         * thrown.
+         *
+         * Because public keys can be derived from private keys, a private key may
+         * be passed instead of a public key.
+         * @since v0.1.92
+         */
+        verify(object: KeyLike | VerifyKeyObjectInput | VerifyPublicKeyInput, signature: NodeJS.ArrayBufferView): boolean;
+        verify(object: KeyLike | VerifyKeyObjectInput | VerifyPublicKeyInput, signature: string, signature_format?: BinaryToTextEncoding): boolean;
+    }
+    /**
+     * Creates a `DiffieHellman` key exchange object using the supplied `prime` and an
+     * optional specific `generator`.
+     *
+     * The `generator` argument can be a number, string, or `Buffer`. If`generator` is not specified, the value `2` is used.
+     *
+     * If `primeEncoding` is specified, `prime` is expected to be a string; otherwise
+     * a `Buffer`, `TypedArray`, or `DataView` is expected.
+     *
+     * If `generatorEncoding` is specified, `generator` is expected to be a string;
+     * otherwise a number, `Buffer`, `TypedArray`, or `DataView` is expected.
+     * @since v0.11.12
+     * @param primeEncoding The `encoding` of the `prime` string.
+     * @param [generator=2]
+     * @param generatorEncoding The `encoding` of the `generator` string.
+     */
+    function createDiffieHellman(primeLength: number, generator?: number): DiffieHellman;
+    function createDiffieHellman(prime: ArrayBuffer | NodeJS.ArrayBufferView, generator?: number | ArrayBuffer | NodeJS.ArrayBufferView): DiffieHellman;
+    function createDiffieHellman(prime: ArrayBuffer | NodeJS.ArrayBufferView, generator: string, generatorEncoding: BinaryToTextEncoding): DiffieHellman;
+    function createDiffieHellman(prime: string, primeEncoding: BinaryToTextEncoding, generator?: number | ArrayBuffer | NodeJS.ArrayBufferView): DiffieHellman;
+    function createDiffieHellman(prime: string, primeEncoding: BinaryToTextEncoding, generator: string, generatorEncoding: BinaryToTextEncoding): DiffieHellman;
+    /**
+     * The `DiffieHellman` class is a utility for creating Diffie-Hellman key
+     * exchanges.
+     *
+     * Instances of the `DiffieHellman` class can be created using the {@link createDiffieHellman} function.
+     *
+     * ```js
+     * import assert from 'assert';
+     *
+     * const {
+     *   createDiffieHellman
+     * } = await import('crypto');
+     *
+     * // Generate Alice's keys...
+     * const alice = createDiffieHellman(2048);
+     * const aliceKey = alice.generateKeys();
+     *
+     * // Generate Bob's keys...
+     * const bob = createDiffieHellman(alice.getPrime(), alice.getGenerator());
+     * const bobKey = bob.generateKeys();
+     *
+     * // Exchange and generate the secret...
+     * const aliceSecret = alice.computeSecret(bobKey);
+     * const bobSecret = bob.computeSecret(aliceKey);
+     *
+     * // OK
+     * assert.strictEqual(aliceSecret.toString('hex'), bobSecret.toString('hex'));
+     * ```
+     * @since v0.5.0
+     */
+    class DiffieHellman {
+        private constructor();
+        /**
+         * Generates private and public Diffie-Hellman key values, and returns
+         * the public key in the specified `encoding`. This key should be
+         * transferred to the other party.
+         * If `encoding` is provided a string is returned; otherwise a `Buffer` is returned.
+         * @since v0.5.0
+         * @param encoding The `encoding` of the return value.
+         */
+        generateKeys(): Buffer;
+        generateKeys(encoding: BinaryToTextEncoding): string;
+        /**
+         * Computes the shared secret using `otherPublicKey` as the other
+         * party's public key and returns the computed shared secret. The supplied
+         * key is interpreted using the specified `inputEncoding`, and secret is
+         * encoded using specified `outputEncoding`.
+         * If the `inputEncoding` is not
+         * provided, `otherPublicKey` is expected to be a `Buffer`,`TypedArray`, or `DataView`.
+         *
+         * If `outputEncoding` is given a string is returned; otherwise, a `Buffer` is returned.
+         * @since v0.5.0
+         * @param inputEncoding The `encoding` of an `otherPublicKey` string.
+         * @param outputEncoding The `encoding` of the return value.
+         */
+        computeSecret(otherPublicKey: NodeJS.ArrayBufferView, inputEncoding?: null, outputEncoding?: null): Buffer;
+        computeSecret(otherPublicKey: string, inputEncoding: BinaryToTextEncoding, outputEncoding?: null): Buffer;
+        computeSecret(otherPublicKey: NodeJS.ArrayBufferView, inputEncoding: null, outputEncoding: BinaryToTextEncoding): string;
+        computeSecret(otherPublicKey: string, inputEncoding: BinaryToTextEncoding, outputEncoding: BinaryToTextEncoding): string;
+        /**
+         * Returns the Diffie-Hellman prime in the specified `encoding`.
+         * If `encoding` is provided a string is
+         * returned; otherwise a `Buffer` is returned.
+         * @since v0.5.0
+         * @param encoding The `encoding` of the return value.
+         */
+        getPrime(): Buffer;
+        getPrime(encoding: BinaryToTextEncoding): string;
+        /**
+         * Returns the Diffie-Hellman generator in the specified `encoding`.
+         * If `encoding` is provided a string is
+         * returned; otherwise a `Buffer` is returned.
+         * @since v0.5.0
+         * @param encoding The `encoding` of the return value.
+         */
+        getGenerator(): Buffer;
+        getGenerator(encoding: BinaryToTextEncoding): string;
+        /**
+         * Returns the Diffie-Hellman public key in the specified `encoding`.
+         * If `encoding` is provided a
+         * string is returned; otherwise a `Buffer` is returned.
+         * @since v0.5.0
+         * @param encoding The `encoding` of the return value.
+         */
+        getPublicKey(): Buffer;
+        getPublicKey(encoding: BinaryToTextEncoding): string;
+        /**
+         * Returns the Diffie-Hellman private key in the specified `encoding`.
+         * If `encoding` is provided a
+         * string is returned; otherwise a `Buffer` is returned.
+         * @since v0.5.0
+         * @param encoding The `encoding` of the return value.
+         */
+        getPrivateKey(): Buffer;
+        getPrivateKey(encoding: BinaryToTextEncoding): string;
+        /**
+         * Sets the Diffie-Hellman public key. If the `encoding` argument is provided,`publicKey` is expected
+         * to be a string. If no `encoding` is provided, `publicKey` is expected
+         * to be a `Buffer`, `TypedArray`, or `DataView`.
+         * @since v0.5.0
+         * @param encoding The `encoding` of the `publicKey` string.
+         */
+        setPublicKey(publicKey: NodeJS.ArrayBufferView): void;
+        setPublicKey(publicKey: string, encoding: BufferEncoding): void;
+        /**
+         * Sets the Diffie-Hellman private key. If the `encoding` argument is provided,`privateKey` is expected
+         * to be a string. If no `encoding` is provided, `privateKey` is expected
+         * to be a `Buffer`, `TypedArray`, or `DataView`.
+         * @since v0.5.0
+         * @param encoding The `encoding` of the `privateKey` string.
+         */
+        setPrivateKey(privateKey: NodeJS.ArrayBufferView): void;
+        setPrivateKey(privateKey: string, encoding: BufferEncoding): void;
+        /**
+         * A bit field containing any warnings and/or errors resulting from a check
+         * performed during initialization of the `DiffieHellman` object.
+         *
+         * The following values are valid for this property (as defined in `constants`module):
+         *
+         * * `DH_CHECK_P_NOT_SAFE_PRIME`
+         * * `DH_CHECK_P_NOT_PRIME`
+         * * `DH_UNABLE_TO_CHECK_GENERATOR`
+         * * `DH_NOT_SUITABLE_GENERATOR`
+         * @since v0.11.12
+         */
+        verifyError: number;
+    }
+    /**
+     * The `DiffieHellmanGroup` class takes a well-known modp group as its argument.
+     * It works the same as `DiffieHellman`, except that it does not allow changing its keys after creation.
+     * In other words, it does not implement `setPublicKey()` or `setPrivateKey()` methods.
+     *
+     * ```js
+     * const { createDiffieHellmanGroup } = await import('node:crypto');
+     * const dh = createDiffieHellmanGroup('modp1');
+     * ```
+     * The name (e.g. `'modp1'`) is taken from [RFC 2412](https://www.rfc-editor.org/rfc/rfc2412.txt) (modp1 and 2) and [RFC 3526](https://www.rfc-editor.org/rfc/rfc3526.txt):
+     * ```bash
+     * $ perl -ne 'print "$1\n" if /"(modp\d+)"/' src/node_crypto_groups.h
+     * modp1  #  768 bits
+     * modp2  # 1024 bits
+     * modp5  # 1536 bits
+     * modp14 # 2048 bits
+     * modp15 # etc.
+     * modp16
+     * modp17
+     * modp18
+     * ```
+     * @since v0.7.5
+     */
+    const DiffieHellmanGroup: DiffieHellmanGroupConstructor;
+    interface DiffieHellmanGroupConstructor {
+        new(name: string): DiffieHellmanGroup;
+        (name: string): DiffieHellmanGroup;
+        readonly prototype: DiffieHellmanGroup;
+    }
+    type DiffieHellmanGroup = Omit<DiffieHellman, 'setPublicKey' | 'setPrivateKey'>;
+    /**
+     * Creates a predefined `DiffieHellmanGroup` key exchange object. The
+     * supported groups are: `'modp1'`, `'modp2'`, `'modp5'` (defined in [RFC 2412](https://www.rfc-editor.org/rfc/rfc2412.txt), but see `Caveats`) and `'modp14'`, `'modp15'`,`'modp16'`, `'modp17'`,
+     * `'modp18'` (defined in [RFC 3526](https://www.rfc-editor.org/rfc/rfc3526.txt)). The
+     * returned object mimics the interface of objects created by {@link createDiffieHellman}, but will not allow changing
+     * the keys (with `diffieHellman.setPublicKey()`, for example). The
+     * advantage of using this method is that the parties do not have to
+     * generate nor exchange a group modulus beforehand, saving both processor
+     * and communication time.
+     *
+     * Example (obtaining a shared secret):
+     *
+     * ```js
+     * const {
+     *   getDiffieHellman
+     * } = await import('crypto');
+     * const alice = getDiffieHellman('modp14');
+     * const bob = getDiffieHellman('modp14');
+     *
+     * alice.generateKeys();
+     * bob.generateKeys();
+     *
+     * const aliceSecret = alice.computeSecret(bob.getPublicKey(), null, 'hex');
+     * const bobSecret = bob.computeSecret(alice.getPublicKey(), null, 'hex');
+     *
+     * // aliceSecret and bobSecret should be the same
+     * console.log(aliceSecret === bobSecret);
+     * ```
+     * @since v0.7.5
+     */
+    function getDiffieHellman(groupName: string): DiffieHellmanGroup;
+    /**
+     * An alias for {@link getDiffieHellman}
+     * @since v0.9.3
+     */
+    function createDiffieHellmanGroup(name: string): DiffieHellmanGroup;
+    /**
+     * Provides an asynchronous Password-Based Key Derivation Function 2 (PBKDF2)
+     * implementation. A selected HMAC digest algorithm specified by `digest` is
+     * applied to derive a key of the requested byte length (`keylen`) from the`password`, `salt` and `iterations`.
+     *
+     * The supplied `callback` function is called with two arguments: `err` and`derivedKey`. If an error occurs while deriving the key, `err` will be set;
+     * otherwise `err` will be `null`. By default, the successfully generated`derivedKey` will be passed to the callback as a `Buffer`. An error will be
+     * thrown if any of the input arguments specify invalid values or types.
+     *
+     * If `digest` is `null`, `'sha1'` will be used. This behavior is deprecated,
+     * please specify a `digest` explicitly.
+     *
+     * The `iterations` argument must be a number set as high as possible. The
+     * higher the number of iterations, the more secure the derived key will be,
+     * but will take a longer amount of time to complete.
+     *
+     * The `salt` should be as unique as possible. It is recommended that a salt is
+     * random and at least 16 bytes long. See [NIST SP 800-132](https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-132.pdf) for details.
+     *
+     * When passing strings for `password` or `salt`, please consider `caveats when using strings as inputs to cryptographic APIs`.
+     *
+     * ```js
+     * const {
+     *   pbkdf2
+     * } = await import('crypto');
+     *
+     * pbkdf2('secret', 'salt', 100000, 64, 'sha512', (err, derivedKey) => {
+     *   if (err) throw err;
+     *   console.log(derivedKey.toString('hex'));  // '3745e48...08d59ae'
+     * });
+     * ```
+     *
+     * The `crypto.DEFAULT_ENCODING` property can be used to change the way the`derivedKey` is passed to the callback. This property, however, has been
+     * deprecated and use should be avoided.
+     *
+     * ```js
+     * import crypto from 'crypto';
+     * crypto.DEFAULT_ENCODING = 'hex';
+     * crypto.pbkdf2('secret', 'salt', 100000, 512, 'sha512', (err, derivedKey) => {
+     *   if (err) throw err;
+     *   console.log(derivedKey);  // '3745e48...aa39b34'
+     * });
+     * ```
+     *
+     * An array of supported digest functions can be retrieved using {@link getHashes}.
+     *
+     * This API uses libuv's threadpool, which can have surprising and
+     * negative performance implications for some applications; see the `UV_THREADPOOL_SIZE` documentation for more information.
+     * @since v0.5.5
+     */
+    function pbkdf2(password: BinaryLike, salt: BinaryLike, iterations: number, keylen: number, digest: string, callback: (err: Error | null, derivedKey: Buffer) => void): void;
+    /**
+     * Provides a synchronous Password-Based Key Derivation Function 2 (PBKDF2)
+     * implementation. A selected HMAC digest algorithm specified by `digest` is
+     * applied to derive a key of the requested byte length (`keylen`) from the`password`, `salt` and `iterations`.
+     *
+     * If an error occurs an `Error` will be thrown, otherwise the derived key will be
+     * returned as a `Buffer`.
+     *
+     * If `digest` is `null`, `'sha1'` will be used. This behavior is deprecated,
+     * please specify a `digest` explicitly.
+     *
+     * The `iterations` argument must be a number set as high as possible. The
+     * higher the number of iterations, the more secure the derived key will be,
+     * but will take a longer amount of time to complete.
+     *
+     * The `salt` should be as unique as possible. It is recommended that a salt is
+     * random and at least 16 bytes long. See [NIST SP 800-132](https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-132.pdf) for details.
+     *
+     * When passing strings for `password` or `salt`, please consider `caveats when using strings as inputs to cryptographic APIs`.
+     *
+     * ```js
+     * const {
+     *   pbkdf2Sync
+     * } = await import('crypto');
+     *
+     * const key = pbkdf2Sync('secret', 'salt', 100000, 64, 'sha512');
+     * console.log(key.toString('hex'));  // '3745e48...08d59ae'
+     * ```
+     *
+     * The `crypto.DEFAULT_ENCODING` property may be used to change the way the`derivedKey` is returned. This property, however, is deprecated and use
+     * should be avoided.
+     *
+     * ```js
+     * import crypto from 'crypto';
+     * crypto.DEFAULT_ENCODING = 'hex';
+     * const key = crypto.pbkdf2Sync('secret', 'salt', 100000, 512, 'sha512');
+     * console.log(key);  // '3745e48...aa39b34'
+     * ```
+     *
+     * An array of supported digest functions can be retrieved using {@link getHashes}.
+     * @since v0.9.3
+     */
+    function pbkdf2Sync(password: BinaryLike, salt: BinaryLike, iterations: number, keylen: number, digest: string): Buffer;
+    /**
+     * Generates cryptographically strong pseudorandom data. The `size` argument
+     * is a number indicating the number of bytes to generate.
+     *
+     * If a `callback` function is provided, the bytes are generated asynchronously
+     * and the `callback` function is invoked with two arguments: `err` and `buf`.
+     * If an error occurs, `err` will be an `Error` object; otherwise it is `null`. The`buf` argument is a `Buffer` containing the generated bytes.
+     *
+     * ```js
+     * // Asynchronous
+     * const {
+     *   randomBytes
+     * } = await import('crypto');
+     *
+     * randomBytes(256, (err, buf) => {
+     *   if (err) throw err;
+     *   console.log(`${buf.length} bytes of random data: ${buf.toString('hex')}`);
+     * });
+     * ```
+     *
+     * If the `callback` function is not provided, the random bytes are generated
+     * synchronously and returned as a `Buffer`. An error will be thrown if
+     * there is a problem generating the bytes.
+     *
+     * ```js
+     * // Synchronous
+     * const {
+     *   randomBytes
+     * } = await import('crypto');
+     *
+     * const buf = randomBytes(256);
+     * console.log(
+     *   `${buf.length} bytes of random data: ${buf.toString('hex')}`);
+     * ```
+     *
+     * The `crypto.randomBytes()` method will not complete until there is
+     * sufficient entropy available.
+     * This should normally never take longer than a few milliseconds. The only time
+     * when generating the random bytes may conceivably block for a longer period of
+     * time is right after boot, when the whole system is still low on entropy.
+     *
+     * This API uses libuv's threadpool, which can have surprising and
+     * negative performance implications for some applications; see the `UV_THREADPOOL_SIZE` documentation for more information.
+     *
+     * The asynchronous version of `crypto.randomBytes()` is carried out in a single
+     * threadpool request. To minimize threadpool task length variation, partition
+     * large `randomBytes` requests when doing so as part of fulfilling a client
+     * request.
+     * @since v0.5.8
+     * @param size The number of bytes to generate. The `size` must not be larger than `2**31 - 1`.
+     * @return if the `callback` function is not provided.
+     */
+    function randomBytes(size: number): Buffer;
+    function randomBytes(size: number, callback: (err: Error | null, buf: Buffer) => void): void;
+    function pseudoRandomBytes(size: number): Buffer;
+    function pseudoRandomBytes(size: number, callback: (err: Error | null, buf: Buffer) => void): void;
+    /**
+     * Return a random integer `n` such that `min <= n < max`.  This
+     * implementation avoids [modulo bias](https://en.wikipedia.org/wiki/Fisher%E2%80%93Yates_shuffle#Modulo_bias).
+     *
+     * The range (`max - min`) must be less than 248. `min` and `max` must
+     * be [safe integers](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/isSafeInteger).
+     *
+     * If the `callback` function is not provided, the random integer is
+     * generated synchronously.
+     *
+     * ```js
+     * // Asynchronous
+     * const {
+     *   randomInt
+     * } = await import('crypto');
+     *
+     * randomInt(3, (err, n) => {
+     *   if (err) throw err;
+     *   console.log(`Random number chosen from (0, 1, 2): ${n}`);
+     * });
+     * ```
+     *
+     * ```js
+     * // Synchronous
+     * const {
+     *   randomInt
+     * } = await import('crypto');
+     *
+     * const n = randomInt(3);
+     * console.log(`Random number chosen from (0, 1, 2): ${n}`);
+     * ```
+     *
+     * ```js
+     * // With `min` argument
+     * const {
+     *   randomInt
+     * } = await import('crypto');
+     *
+     * const n = randomInt(1, 7);
+     * console.log(`The dice rolled: ${n}`);
+     * ```
+     * @since v14.10.0, v12.19.0
+     * @param [min=0] Start of random range (inclusive).
+     * @param max End of random range (exclusive).
+     * @param callback `function(err, n) {}`.
+     */
+    function randomInt(max: number): number;
+    function randomInt(min: number, max: number): number;
+    function randomInt(max: number, callback: (err: Error | null, value: number) => void): void;
+    function randomInt(min: number, max: number, callback: (err: Error | null, value: number) => void): void;
+    /**
+     * Synchronous version of {@link randomFill}.
+     *
+     * ```js
+     * import { Buffer } from 'buffer';
+     * const { randomFillSync } = await import('crypto');
+     *
+     * const buf = Buffer.alloc(10);
+     * console.log(randomFillSync(buf).toString('hex'));
+     *
+     * randomFillSync(buf, 5);
+     * console.log(buf.toString('hex'));
+     *
+     * // The above is equivalent to the following:
+     * randomFillSync(buf, 5, 5);
+     * console.log(buf.toString('hex'));
+     * ```
+     *
+     * Any `ArrayBuffer`, `TypedArray` or `DataView` instance may be passed as`buffer`.
+     *
+     * ```js
+     * import { Buffer } from 'buffer';
+     * const { randomFillSync } = await import('crypto');
+     *
+     * const a = new Uint32Array(10);
+     * console.log(Buffer.from(randomFillSync(a).buffer,
+     *                         a.byteOffset, a.byteLength).toString('hex'));
+     *
+     * const b = new DataView(new ArrayBuffer(10));
+     * console.log(Buffer.from(randomFillSync(b).buffer,
+     *                         b.byteOffset, b.byteLength).toString('hex'));
+     *
+     * const c = new ArrayBuffer(10);
+     * console.log(Buffer.from(randomFillSync(c)).toString('hex'));
+     * ```
+     * @since v7.10.0, v6.13.0
+     * @param buffer Must be supplied. The size of the provided `buffer` must not be larger than `2**31 - 1`.
+     * @param [offset=0]
+     * @param [size=buffer.length - offset]
+     * @return The object passed as `buffer` argument.
+     */
+    function randomFillSync<T extends NodeJS.ArrayBufferView>(buffer: T, offset?: number, size?: number): T;
+    /**
+     * This function is similar to {@link randomBytes} but requires the first
+     * argument to be a `Buffer` that will be filled. It also
+     * requires that a callback is passed in.
+     *
+     * If the `callback` function is not provided, an error will be thrown.
+     *
+     * ```js
+     * import { Buffer } from 'buffer';
+     * const { randomFill } = await import('crypto');
+     *
+     * const buf = Buffer.alloc(10);
+     * randomFill(buf, (err, buf) => {
+     *   if (err) throw err;
+     *   console.log(buf.toString('hex'));
+     * });
+     *
+     * randomFill(buf, 5, (err, buf) => {
+     *   if (err) throw err;
+     *   console.log(buf.toString('hex'));
+     * });
+     *
+     * // The above is equivalent to the following:
+     * randomFill(buf, 5, 5, (err, buf) => {
+     *   if (err) throw err;
+     *   console.log(buf.toString('hex'));
+     * });
+     * ```
+     *
+     * Any `ArrayBuffer`, `TypedArray`, or `DataView` instance may be passed as`buffer`.
+     *
+     * While this includes instances of `Float32Array` and `Float64Array`, this
+     * function should not be used to generate random floating-point numbers. The
+     * result may contain `+Infinity`, `-Infinity`, and `NaN`, and even if the array
+     * contains finite numbers only, they are not drawn from a uniform random
+     * distribution and have no meaningful lower or upper bounds.
+     *
+     * ```js
+     * import { Buffer } from 'buffer';
+     * const { randomFill } = await import('crypto');
+     *
+     * const a = new Uint32Array(10);
+     * randomFill(a, (err, buf) => {
+     *   if (err) throw err;
+     *   console.log(Buffer.from(buf.buffer, buf.byteOffset, buf.byteLength)
+     *     .toString('hex'));
+     * });
+     *
+     * const b = new DataView(new ArrayBuffer(10));
+     * randomFill(b, (err, buf) => {
+     *   if (err) throw err;
+     *   console.log(Buffer.from(buf.buffer, buf.byteOffset, buf.byteLength)
+     *     .toString('hex'));
+     * });
+     *
+     * const c = new ArrayBuffer(10);
+     * randomFill(c, (err, buf) => {
+     *   if (err) throw err;
+     *   console.log(Buffer.from(buf).toString('hex'));
+     * });
+     * ```
+     *
+     * This API uses libuv's threadpool, which can have surprising and
+     * negative performance implications for some applications; see the `UV_THREADPOOL_SIZE` documentation for more information.
+     *
+     * The asynchronous version of `crypto.randomFill()` is carried out in a single
+     * threadpool request. To minimize threadpool task length variation, partition
+     * large `randomFill` requests when doing so as part of fulfilling a client
+     * request.
+     * @since v7.10.0, v6.13.0
+     * @param buffer Must be supplied. The size of the provided `buffer` must not be larger than `2**31 - 1`.
+     * @param [offset=0]
+     * @param [size=buffer.length - offset]
+     * @param callback `function(err, buf) {}`.
+     */
+    function randomFill<T extends NodeJS.ArrayBufferView>(buffer: T, callback: (err: Error | null, buf: T) => void): void;
+    function randomFill<T extends NodeJS.ArrayBufferView>(buffer: T, offset: number, callback: (err: Error | null, buf: T) => void): void;
+    function randomFill<T extends NodeJS.ArrayBufferView>(buffer: T, offset: number, size: number, callback: (err: Error | null, buf: T) => void): void;
+    interface ScryptOptions {
+        cost?: number | undefined;
+        blockSize?: number | undefined;
+        parallelization?: number | undefined;
+        N?: number | undefined;
+        r?: number | undefined;
+        p?: number | undefined;
+        maxmem?: number | undefined;
+    }
+    /**
+     * Provides an asynchronous [scrypt](https://en.wikipedia.org/wiki/Scrypt) implementation. Scrypt is a password-based
+     * key derivation function that is designed to be expensive computationally and
+     * memory-wise in order to make brute-force attacks unrewarding.
+     *
+     * The `salt` should be as unique as possible. It is recommended that a salt is
+     * random and at least 16 bytes long. See [NIST SP 800-132](https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-132.pdf) for details.
+     *
+     * When passing strings for `password` or `salt`, please consider `caveats when using strings as inputs to cryptographic APIs`.
+     *
+     * The `callback` function is called with two arguments: `err` and `derivedKey`.`err` is an exception object when key derivation fails, otherwise `err` is`null`. `derivedKey` is passed to the
+     * callback as a `Buffer`.
+     *
+     * An exception is thrown when any of the input arguments specify invalid values
+     * or types.
+     *
+     * ```js
+     * const {
+     *   scrypt
+     * } = await import('crypto');
+     *
+     * // Using the factory defaults.
+     * scrypt('password', 'salt', 64, (err, derivedKey) => {
+     *   if (err) throw err;
+     *   console.log(derivedKey.toString('hex'));  // '3745e48...08d59ae'
+     * });
+     * // Using a custom N parameter. Must be a power of two.
+     * scrypt('password', 'salt', 64, { N: 1024 }, (err, derivedKey) => {
+     *   if (err) throw err;
+     *   console.log(derivedKey.toString('hex'));  // '3745e48...aa39b34'
+     * });
+     * ```
+     * @since v10.5.0
+     */
+    function scrypt(password: BinaryLike, salt: BinaryLike, keylen: number, callback: (err: Error | null, derivedKey: Buffer) => void): void;
+    function scrypt(password: BinaryLike, salt: BinaryLike, keylen: number, options: ScryptOptions, callback: (err: Error | null, derivedKey: Buffer) => void): void;
+    /**
+     * Provides a synchronous [scrypt](https://en.wikipedia.org/wiki/Scrypt) implementation. Scrypt is a password-based
+     * key derivation function that is designed to be expensive computationally and
+     * memory-wise in order to make brute-force attacks unrewarding.
+     *
+     * The `salt` should be as unique as possible. It is recommended that a salt is
+     * random and at least 16 bytes long. See [NIST SP 800-132](https://nvlpubs.nist.gov/nistpubs/Legacy/SP/nistspecialpublication800-132.pdf) for details.
+     *
+     * When passing strings for `password` or `salt`, please consider `caveats when using strings as inputs to cryptographic APIs`.
+     *
+     * An exception is thrown when key derivation fails, otherwise the derived key is
+     * returned as a `Buffer`.
+     *
+     * An exception is thrown when any of the input arguments specify invalid values
+     * or types.
+     *
+     * ```js
+     * const {
+     *   scryptSync
+     * } = await import('crypto');
+     * // Using the factory defaults.
+     *
+     * const key1 = scryptSync('password', 'salt', 64);
+     * console.log(key1.toString('hex'));  // '3745e48...08d59ae'
+     * // Using a custom N parameter. Must be a power of two.
+     * const key2 = scryptSync('password', 'salt', 64, { N: 1024 });
+     * console.log(key2.toString('hex'));  // '3745e48...aa39b34'
+     * ```
+     * @since v10.5.0
+     */
+    function scryptSync(password: BinaryLike, salt: BinaryLike, keylen: number, options?: ScryptOptions): Buffer;
+    interface RsaPublicKey {
+        key: KeyLike;
+        padding?: number | undefined;
+    }
+    interface RsaPrivateKey {
+        key: KeyLike;
+        passphrase?: string | undefined;
+        /**
+         * @default 'sha1'
+         */
+        oaepHash?: string | undefined;
+        oaepLabel?: NodeJS.TypedArray | undefined;
+        padding?: number | undefined;
+    }
+    /**
+     * Encrypts the content of `buffer` with `key` and returns a new `Buffer` with encrypted content. The returned data can be decrypted using
+     * the corresponding private key, for example using {@link privateDecrypt}.
+     *
+     * If `key` is not a `KeyObject`, this function behaves as if`key` had been passed to {@link createPublicKey}. If it is an
+     * object, the `padding` property can be passed. Otherwise, this function uses`RSA_PKCS1_OAEP_PADDING`.
+     *
+     * Because RSA public keys can be derived from private keys, a private key may
+     * be passed instead of a public key.
+     * @since v0.11.14
+     */
+    function publicEncrypt(key: RsaPublicKey | RsaPrivateKey | KeyLike, buffer: NodeJS.ArrayBufferView): Buffer;
+    /**
+     * Decrypts `buffer` with `key`.`buffer` was previously encrypted using
+     * the corresponding private key, for example using {@link privateEncrypt}.
+     *
+     * If `key` is not a `KeyObject`, this function behaves as if`key` had been passed to {@link createPublicKey}. If it is an
+     * object, the `padding` property can be passed. Otherwise, this function uses`RSA_PKCS1_PADDING`.
+     *
+     * Because RSA public keys can be derived from private keys, a private key may
+     * be passed instead of a public key.
+     * @since v1.1.0
+     */
+    function publicDecrypt(key: RsaPublicKey | RsaPrivateKey | KeyLike, buffer: NodeJS.ArrayBufferView): Buffer;
+    /**
+     * Decrypts `buffer` with `privateKey`. `buffer` was previously encrypted using
+     * the corresponding public key, for example using {@link publicEncrypt}.
+     *
+     * If `privateKey` is not a `KeyObject`, this function behaves as if`privateKey` had been passed to {@link createPrivateKey}. If it is an
+     * object, the `padding` property can be passed. Otherwise, this function uses`RSA_PKCS1_OAEP_PADDING`.
+     * @since v0.11.14
+     */
+    function privateDecrypt(privateKey: RsaPrivateKey | KeyLike, buffer: NodeJS.ArrayBufferView): Buffer;
+    /**
+     * Encrypts `buffer` with `privateKey`. The returned data can be decrypted using
+     * the corresponding public key, for example using {@link publicDecrypt}.
+     *
+     * If `privateKey` is not a `KeyObject`, this function behaves as if`privateKey` had been passed to {@link createPrivateKey}. If it is an
+     * object, the `padding` property can be passed. Otherwise, this function uses`RSA_PKCS1_PADDING`.
+     * @since v1.1.0
+     */
+    function privateEncrypt(privateKey: RsaPrivateKey | KeyLike, buffer: NodeJS.ArrayBufferView): Buffer;
+    /**
+     * ```js
+     * const {
+     *   getCiphers
+     * } = await import('crypto');
+     *
+     * console.log(getCiphers()); // ['aes-128-cbc', 'aes-128-ccm', ...]
+     * ```
+     * @since v0.9.3
+     * @return An array with the names of the supported cipher algorithms.
+     */
+    function getCiphers(): string[];
+    /**
+     * ```js
+     * const {
+     *   getCurves
+     * } = await import('crypto');
+     *
+     * console.log(getCurves()); // ['Oakley-EC2N-3', 'Oakley-EC2N-4', ...]
+     * ```
+     * @since v2.3.0
+     * @return An array with the names of the supported elliptic curves.
+     */
+    function getCurves(): string[];
+    /**
+     * @since v10.0.0
+     * @return `1` if and only if a FIPS compliant crypto provider is currently in use, `0` otherwise. A future semver-major release may change the return type of this API to a {boolean}.
+     */
+    function getFips(): 1 | 0;
+    /**
+     * Enables the FIPS compliant crypto provider in a FIPS-enabled Node.js build. Throws an error if FIPS mode is not available.
+     * @since v10.0.0
+     * @param bool `true` to enable FIPS mode.
+     */
+    function setFips(bool: boolean): void;
+    /**
+     * ```js
+     * const {
+     *   getHashes
+     * } = await import('crypto');
+     *
+     * console.log(getHashes()); // ['DSA', 'DSA-SHA', 'DSA-SHA1', ...]
+     * ```
+     * @since v0.9.3
+     * @return An array of the names of the supported hash algorithms, such as `'RSA-SHA256'`. Hash algorithms are also called "digest" algorithms.
+     */
+    function getHashes(): string[];
+    /**
+     * The `ECDH` class is a utility for creating Elliptic Curve Diffie-Hellman (ECDH)
+     * key exchanges.
+     *
+     * Instances of the `ECDH` class can be created using the {@link createECDH} function.
+     *
+     * ```js
+     * import assert from 'assert';
+     *
+     * const {
+     *   createECDH
+     * } = await import('crypto');
+     *
+     * // Generate Alice's keys...
+     * const alice = createECDH('secp521r1');
+     * const aliceKey = alice.generateKeys();
+     *
+     * // Generate Bob's keys...
+     * const bob = createECDH('secp521r1');
+     * const bobKey = bob.generateKeys();
+     *
+     * // Exchange and generate the secret...
+     * const aliceSecret = alice.computeSecret(bobKey);
+     * const bobSecret = bob.computeSecret(aliceKey);
+     *
+     * assert.strictEqual(aliceSecret.toString('hex'), bobSecret.toString('hex'));
+     * // OK
+     * ```
+     * @since v0.11.14
+     */
+    class ECDH {
+        private constructor();
+        /**
+         * Converts the EC Diffie-Hellman public key specified by `key` and `curve` to the
+         * format specified by `format`. The `format` argument specifies point encoding
+         * and can be `'compressed'`, `'uncompressed'` or `'hybrid'`. The supplied key is
+         * interpreted using the specified `inputEncoding`, and the returned key is encoded
+         * using the specified `outputEncoding`.
+         *
+         * Use {@link getCurves} to obtain a list of available curve names.
+         * On recent OpenSSL releases, `openssl ecparam -list_curves` will also display
+         * the name and description of each available elliptic curve.
+         *
+         * If `format` is not specified the point will be returned in `'uncompressed'`format.
+         *
+         * If the `inputEncoding` is not provided, `key` is expected to be a `Buffer`,`TypedArray`, or `DataView`.
+         *
+         * Example (uncompressing a key):
+         *
+         * ```js
+         * const {
+         *   createECDH,
+         *   ECDH
+         * } = await import('crypto');
+         *
+         * const ecdh = createECDH('secp256k1');
+         * ecdh.generateKeys();
+         *
+         * const compressedKey = ecdh.getPublicKey('hex', 'compressed');
+         *
+         * const uncompressedKey = ECDH.convertKey(compressedKey,
+         *                                         'secp256k1',
+         *                                         'hex',
+         *                                         'hex',
+         *                                         'uncompressed');
+         *
+         * // The converted key and the uncompressed public key should be the same
+         * console.log(uncompressedKey === ecdh.getPublicKey('hex'));
+         * ```
+         * @since v10.0.0
+         * @param inputEncoding The `encoding` of the `key` string.
+         * @param outputEncoding The `encoding` of the return value.
+         * @param [format='uncompressed']
+         */
+        static convertKey(
+            key: BinaryLike,
+            curve: string,
+            inputEncoding?: BinaryToTextEncoding,
+            outputEncoding?: 'latin1' | 'hex' | 'base64' | 'base64url',
+            format?: 'uncompressed' | 'compressed' | 'hybrid'
+        ): Buffer | string;
+        /**
+         * Generates private and public EC Diffie-Hellman key values, and returns
+         * the public key in the specified `format` and `encoding`. This key should be
+         * transferred to the other party.
+         *
+         * The `format` argument specifies point encoding and can be `'compressed'` or`'uncompressed'`. If `format` is not specified, the point will be returned in`'uncompressed'` format.
+         *
+         * If `encoding` is provided a string is returned; otherwise a `Buffer` is returned.
+         * @since v0.11.14
+         * @param encoding The `encoding` of the return value.
+         * @param [format='uncompressed']
+         */
+        generateKeys(): Buffer;
+        generateKeys(encoding: BinaryToTextEncoding, format?: ECDHKeyFormat): string;
+        /**
+         * Computes the shared secret using `otherPublicKey` as the other
+         * party's public key and returns the computed shared secret. The supplied
+         * key is interpreted using specified `inputEncoding`, and the returned secret
+         * is encoded using the specified `outputEncoding`.
+         * If the `inputEncoding` is not
+         * provided, `otherPublicKey` is expected to be a `Buffer`, `TypedArray`, or`DataView`.
+         *
+         * If `outputEncoding` is given a string will be returned; otherwise a `Buffer` is returned.
+         *
+         * `ecdh.computeSecret` will throw an`ERR_CRYPTO_ECDH_INVALID_PUBLIC_KEY` error when `otherPublicKey`lies outside of the elliptic curve. Since `otherPublicKey` is
+         * usually supplied from a remote user over an insecure network,
+         * be sure to handle this exception accordingly.
+         * @since v0.11.14
+         * @param inputEncoding The `encoding` of the `otherPublicKey` string.
+         * @param outputEncoding The `encoding` of the return value.
+         */
+        computeSecret(otherPublicKey: NodeJS.ArrayBufferView): Buffer;
+        computeSecret(otherPublicKey: string, inputEncoding: BinaryToTextEncoding): Buffer;
+        computeSecret(otherPublicKey: NodeJS.ArrayBufferView, outputEncoding: BinaryToTextEncoding): string;
+        computeSecret(otherPublicKey: string, inputEncoding: BinaryToTextEncoding, outputEncoding: BinaryToTextEncoding): string;
+        /**
+         * If `encoding` is specified, a string is returned; otherwise a `Buffer` is
+         * returned.
+         * @since v0.11.14
+         * @param encoding The `encoding` of the return value.
+         * @return The EC Diffie-Hellman in the specified `encoding`.
+         */
+        getPrivateKey(): Buffer;
+        getPrivateKey(encoding: BinaryToTextEncoding): string;
+        /**
+         * The `format` argument specifies point encoding and can be `'compressed'` or`'uncompressed'`. If `format` is not specified the point will be returned in`'uncompressed'` format.
+         *
+         * If `encoding` is specified, a string is returned; otherwise a `Buffer` is
+         * returned.
+         * @since v0.11.14
+         * @param [encoding] The `encoding` of the return value.
+         * @param [format='uncompressed']
+         * @return The EC Diffie-Hellman public key in the specified `encoding` and `format`.
+         */
+        getPublicKey(encoding?: null, format?: ECDHKeyFormat): Buffer;
+        getPublicKey(encoding: BinaryToTextEncoding, format?: ECDHKeyFormat): string;
+        /**
+         * Sets the EC Diffie-Hellman private key.
+         * If `encoding` is provided, `privateKey` is expected
+         * to be a string; otherwise `privateKey` is expected to be a `Buffer`,`TypedArray`, or `DataView`.
+         *
+         * If `privateKey` is not valid for the curve specified when the `ECDH` object was
+         * created, an error is thrown. Upon setting the private key, the associated
+         * public point (key) is also generated and set in the `ECDH` object.
+         * @since v0.11.14
+         * @param encoding The `encoding` of the `privateKey` string.
+         */
+        setPrivateKey(privateKey: NodeJS.ArrayBufferView): void;
+        setPrivateKey(privateKey: string, encoding: BinaryToTextEncoding): void;
+    }
+    /**
+     * Creates an Elliptic Curve Diffie-Hellman (`ECDH`) key exchange object using a
+     * predefined curve specified by the `curveName` string. Use {@link getCurves} to obtain a list of available curve names. On recent
+     * OpenSSL releases, `openssl ecparam -list_curves` will also display the name
+     * and description of each available elliptic curve.
+     * @since v0.11.14
+     */
+    function createECDH(curveName: string): ECDH;
+    /**
+     * This function is based on a constant-time algorithm.
+     * Returns true if `a` is equal to `b`, without leaking timing information that
+     * would allow an attacker to guess one of the values. This is suitable for
+     * comparing HMAC digests or secret values like authentication cookies or [capability urls](https://www.w3.org/TR/capability-urls/).
+     *
+     * `a` and `b` must both be `Buffer`s, `TypedArray`s, or `DataView`s, and they
+     * must have the same byte length. An error is thrown if `a` and `b` have
+     * different byte lengths.
+     *
+     * If at least one of `a` and `b` is a `TypedArray` with more than one byte per
+     * entry, such as `Uint16Array`, the result will be computed using the platform
+     * byte order.
+     *
+     * Use of `crypto.timingSafeEqual` does not guarantee that the _surrounding_ code
+     * is timing-safe. Care should be taken to ensure that the surrounding code does
+     * not introduce timing vulnerabilities.
+     * @since v6.6.0
+     */
+    function timingSafeEqual(a: NodeJS.ArrayBufferView, b: NodeJS.ArrayBufferView): boolean;
+    /** @deprecated since v10.0.0 */
+    const DEFAULT_ENCODING: BufferEncoding;
+    type KeyType = 'rsa' | 'rsa-pss' | 'dsa' | 'ec' | 'ed25519' | 'ed448' | 'x25519' | 'x448';
+    type KeyFormat = 'pem' | 'der';
+    interface BasePrivateKeyEncodingOptions<T extends KeyFormat> {
+        format: T;
+        cipher?: string | undefined;
+        passphrase?: string | undefined;
+    }
+    interface KeyPairKeyObjectResult {
+        publicKey: KeyObject;
+        privateKey: KeyObject;
+    }
+    interface ED25519KeyPairKeyObjectOptions {}
+    interface ED448KeyPairKeyObjectOptions {}
+    interface X25519KeyPairKeyObjectOptions {}
+    interface X448KeyPairKeyObjectOptions {}
+    interface ECKeyPairKeyObjectOptions {
+        /**
+         * Name of the curve to use
+         */
+        namedCurve: string;
+    }
+    interface RSAKeyPairKeyObjectOptions {
+        /**
+         * Key size in bits
+         */
+        modulusLength: number;
+        /**
+         * Public exponent
+         * @default 0x10001
+         */
+        publicExponent?: number | undefined;
+    }
+    interface RSAPSSKeyPairKeyObjectOptions {
+        /**
+         * Key size in bits
+         */
+        modulusLength: number;
+        /**
+         * Public exponent
+         * @default 0x10001
+         */
+        publicExponent?: number | undefined;
+        /**
+         * Name of the message digest
+         */
+        hashAlgorithm?: string;
+        /**
+         * Name of the message digest used by MGF1
+         */
+        mgf1HashAlgorithm?: string;
+        /**
+         * Minimal salt length in bytes
+         */
+        saltLength?: string;
+    }
+    interface DSAKeyPairKeyObjectOptions {
+        /**
+         * Key size in bits
+         */
+        modulusLength: number;
+        /**
+         * Size of q in bits
+         */
+        divisorLength: number;
+    }
+    interface RSAKeyPairOptions<PubF extends KeyFormat, PrivF extends KeyFormat> {
+        /**
+         * Key size in bits
+         */
+        modulusLength: number;
+        /**
+         * Public exponent
+         * @default 0x10001
+         */
+        publicExponent?: number | undefined;
+        publicKeyEncoding: {
+            type: 'pkcs1' | 'spki';
+            format: PubF;
+        };
+        privateKeyEncoding: BasePrivateKeyEncodingOptions<PrivF> & {
+            type: 'pkcs1' | 'pkcs8';
+        };
+    }
+    interface RSAPSSKeyPairOptions<PubF extends KeyFormat, PrivF extends KeyFormat> {
+        /**
+         * Key size in bits
+         */
+        modulusLength: number;
+        /**
+         * Public exponent
+         * @default 0x10001
+         */
+        publicExponent?: number | undefined;
+        /**
+         * Name of the message digest
+         */
+        hashAlgorithm?: string;
+        /**
+         * Name of the message digest used by MGF1
+         */
+        mgf1HashAlgorithm?: string;
+        /**
+         * Minimal salt length in bytes
+         */
+        saltLength?: string;
+        publicKeyEncoding: {
+            type: 'spki';
+            format: PubF;
+        };
+        privateKeyEncoding: BasePrivateKeyEncodingOptions<PrivF> & {
+            type: 'pkcs8';
+        };
+    }
+    interface DSAKeyPairOptions<PubF extends KeyFormat, PrivF extends KeyFormat> {
+        /**
+         * Key size in bits
+         */
+        modulusLength: number;
+        /**
+         * Size of q in bits
+         */
+        divisorLength: number;
+        publicKeyEncoding: {
+            type: 'spki';
+            format: PubF;
+        };
+        privateKeyEncoding: BasePrivateKeyEncodingOptions<PrivF> & {
+            type: 'pkcs8';
+        };
+    }
+    interface ECKeyPairOptions<PubF extends KeyFormat, PrivF extends KeyFormat> {
+        /**
+         * Name of the curve to use.
+         */
+        namedCurve: string;
+        publicKeyEncoding: {
+            type: 'pkcs1' | 'spki';
+            format: PubF;
+        };
+        privateKeyEncoding: BasePrivateKeyEncodingOptions<PrivF> & {
+            type: 'sec1' | 'pkcs8';
+        };
+    }
+    interface ED25519KeyPairOptions<PubF extends KeyFormat, PrivF extends KeyFormat> {
+        publicKeyEncoding: {
+            type: 'spki';
+            format: PubF;
+        };
+        privateKeyEncoding: BasePrivateKeyEncodingOptions<PrivF> & {
+            type: 'pkcs8';
+        };
+    }
+    interface ED448KeyPairOptions<PubF extends KeyFormat, PrivF extends KeyFormat> {
+        publicKeyEncoding: {
+            type: 'spki';
+            format: PubF;
+        };
+        privateKeyEncoding: BasePrivateKeyEncodingOptions<PrivF> & {
+            type: 'pkcs8';
+        };
+    }
+    interface X25519KeyPairOptions<PubF extends KeyFormat, PrivF extends KeyFormat> {
+        publicKeyEncoding: {
+            type: 'spki';
+            format: PubF;
+        };
+        privateKeyEncoding: BasePrivateKeyEncodingOptions<PrivF> & {
+            type: 'pkcs8';
+        };
+    }
+    interface X448KeyPairOptions<PubF extends KeyFormat, PrivF extends KeyFormat> {
+        publicKeyEncoding: {
+            type: 'spki';
+            format: PubF;
+        };
+        privateKeyEncoding: BasePrivateKeyEncodingOptions<PrivF> & {
+            type: 'pkcs8';
+        };
+    }
+    interface KeyPairSyncResult<T1 extends string | Buffer, T2 extends string | Buffer> {
+        publicKey: T1;
+        privateKey: T2;
+    }
+    /**
+     * Generates a new asymmetric key pair of the given `type`. RSA, RSA-PSS, DSA, EC,
+     * Ed25519, Ed448, X25519, X448, and DH are currently supported.
+     *
+     * If a `publicKeyEncoding` or `privateKeyEncoding` was specified, this function
+     * behaves as if `keyObject.export()` had been called on its result. Otherwise,
+     * the respective part of the key is returned as a `KeyObject`.
+     *
+     * When encoding public keys, it is recommended to use `'spki'`. When encoding
+     * private keys, it is recommended to use `'pkcs8'` with a strong passphrase,
+     * and to keep the passphrase confidential.
+     *
+     * ```js
+     * const {
+     *   generateKeyPairSync
+     * } = await import('crypto');
+     *
+     * const {
+     *   publicKey,
+     *   privateKey,
+     * } = generateKeyPairSync('rsa', {
+     *   modulusLength: 4096,
+     *   publicKeyEncoding: {
+     *     type: 'spki',
+     *     format: 'pem'
+     *   },
+     *   privateKeyEncoding: {
+     *     type: 'pkcs8',
+     *     format: 'pem',
+     *     cipher: 'aes-256-cbc',
+     *     passphrase: 'top secret'
+     *   }
+     * });
+     * ```
+     *
+     * The return value `{ publicKey, privateKey }` represents the generated key pair.
+     * When PEM encoding was selected, the respective key will be a string, otherwise
+     * it will be a buffer containing the data encoded as DER.
+     * @since v10.12.0
+     * @param type Must be `'rsa'`, `'rsa-pss'`, `'dsa'`, `'ec'`, `'ed25519'`, `'ed448'`, `'x25519'`, `'x448'`, or `'dh'`.
+     */
+    function generateKeyPairSync(type: 'rsa', options: RSAKeyPairOptions<'pem', 'pem'>): KeyPairSyncResult<string, string>;
+    function generateKeyPairSync(type: 'rsa', options: RSAKeyPairOptions<'pem', 'der'>): KeyPairSyncResult<string, Buffer>;
+    function generateKeyPairSync(type: 'rsa', options: RSAKeyPairOptions<'der', 'pem'>): KeyPairSyncResult<Buffer, string>;
+    function generateKeyPairSync(type: 'rsa', options: RSAKeyPairOptions<'der', 'der'>): KeyPairSyncResult<Buffer, Buffer>;
+    function generateKeyPairSync(type: 'rsa', options: RSAKeyPairKeyObjectOptions): KeyPairKeyObjectResult;
+    function generateKeyPairSync(type: 'rsa-pss', options: RSAPSSKeyPairOptions<'pem', 'pem'>): KeyPairSyncResult<string, string>;
+    function generateKeyPairSync(type: 'rsa-pss', options: RSAPSSKeyPairOptions<'pem', 'der'>): KeyPairSyncResult<string, Buffer>;
+    function generateKeyPairSync(type: 'rsa-pss', options: RSAPSSKeyPairOptions<'der', 'pem'>): KeyPairSyncResult<Buffer, string>;
+    function generateKeyPairSync(type: 'rsa-pss', options: RSAPSSKeyPairOptions<'der', 'der'>): KeyPairSyncResult<Buffer, Buffer>;
+    function generateKeyPairSync(type: 'rsa-pss', options: RSAPSSKeyPairKeyObjectOptions): KeyPairKeyObjectResult;
+    function generateKeyPairSync(type: 'dsa', options: DSAKeyPairOptions<'pem', 'pem'>): KeyPairSyncResult<string, string>;
+    function generateKeyPairSync(type: 'dsa', options: DSAKeyPairOptions<'pem', 'der'>): KeyPairSyncResult<string, Buffer>;
+    function generateKeyPairSync(type: 'dsa', options: DSAKeyPairOptions<'der', 'pem'>): KeyPairSyncResult<Buffer, string>;
+    function generateKeyPairSync(type: 'dsa', options: DSAKeyPairOptions<'der', 'der'>): KeyPairSyncResult<Buffer, Buffer>;
+    function generateKeyPairSync(type: 'dsa', options: DSAKeyPairKeyObjectOptions): KeyPairKeyObjectResult;
+    function generateKeyPairSync(type: 'ec', options: ECKeyPairOptions<'pem', 'pem'>): KeyPairSyncResult<string, string>;
+    function generateKeyPairSync(type: 'ec', options: ECKeyPairOptions<'pem', 'der'>): KeyPairSyncResult<string, Buffer>;
+    function generateKeyPairSync(type: 'ec', options: ECKeyPairOptions<'der', 'pem'>): KeyPairSyncResult<Buffer, string>;
+    function generateKeyPairSync(type: 'ec', options: ECKeyPairOptions<'der', 'der'>): KeyPairSyncResult<Buffer, Buffer>;
+    function generateKeyPairSync(type: 'ec', options: ECKeyPairKeyObjectOptions): KeyPairKeyObjectResult;
+    function generateKeyPairSync(type: 'ed25519', options: ED25519KeyPairOptions<'pem', 'pem'>): KeyPairSyncResult<string, string>;
+    function generateKeyPairSync(type: 'ed25519', options: ED25519KeyPairOptions<'pem', 'der'>): KeyPairSyncResult<string, Buffer>;
+    function generateKeyPairSync(type: 'ed25519', options: ED25519KeyPairOptions<'der', 'pem'>): KeyPairSyncResult<Buffer, string>;
+    function generateKeyPairSync(type: 'ed25519', options: ED25519KeyPairOptions<'der', 'der'>): KeyPairSyncResult<Buffer, Buffer>;
+    function generateKeyPairSync(type: 'ed25519', options?: ED25519KeyPairKeyObjectOptions): KeyPairKeyObjectResult;
+    function generateKeyPairSync(type: 'ed448', options: ED448KeyPairOptions<'pem', 'pem'>): KeyPairSyncResult<string, string>;
+    function generateKeyPairSync(type: 'ed448', options: ED448KeyPairOptions<'pem', 'der'>): KeyPairSyncResult<string, Buffer>;
+    function generateKeyPairSync(type: 'ed448', options: ED448KeyPairOptions<'der', 'pem'>): KeyPairSyncResult<Buffer, string>;
+    function generateKeyPairSync(type: 'ed448', options: ED448KeyPairOptions<'der', 'der'>): KeyPairSyncResult<Buffer, Buffer>;
+    function generateKeyPairSync(type: 'ed448', options?: ED448KeyPairKeyObjectOptions): KeyPairKeyObjectResult;
+    function generateKeyPairSync(type: 'x25519', options: X25519KeyPairOptions<'pem', 'pem'>): KeyPairSyncResult<string, string>;
+    function generateKeyPairSync(type: 'x25519', options: X25519KeyPairOptions<'pem', 'der'>): KeyPairSyncResult<string, Buffer>;
+    function generateKeyPairSync(type: 'x25519', options: X25519KeyPairOptions<'der', 'pem'>): KeyPairSyncResult<Buffer, string>;
+    function generateKeyPairSync(type: 'x25519', options: X25519KeyPairOptions<'der', 'der'>): KeyPairSyncResult<Buffer, Buffer>;
+    function generateKeyPairSync(type: 'x25519', options?: X25519KeyPairKeyObjectOptions): KeyPairKeyObjectResult;
+    function generateKeyPairSync(type: 'x448', options: X448KeyPairOptions<'pem', 'pem'>): KeyPairSyncResult<string, string>;
+    function generateKeyPairSync(type: 'x448', options: X448KeyPairOptions<'pem', 'der'>): KeyPairSyncResult<string, Buffer>;
+    function generateKeyPairSync(type: 'x448', options: X448KeyPairOptions<'der', 'pem'>): KeyPairSyncResult<Buffer, string>;
+    function generateKeyPairSync(type: 'x448', options: X448KeyPairOptions<'der', 'der'>): KeyPairSyncResult<Buffer, Buffer>;
+    function generateKeyPairSync(type: 'x448', options?: X448KeyPairKeyObjectOptions): KeyPairKeyObjectResult;
+    /**
+     * Generates a new asymmetric key pair of the given `type`. RSA, RSA-PSS, DSA, EC,
+     * Ed25519, Ed448, X25519, X448, and DH are currently supported.
+     *
+     * If a `publicKeyEncoding` or `privateKeyEncoding` was specified, this function
+     * behaves as if `keyObject.export()` had been called on its result. Otherwise,
+     * the respective part of the key is returned as a `KeyObject`.
+     *
+     * It is recommended to encode public keys as `'spki'` and private keys as`'pkcs8'` with encryption for long-term storage:
+     *
+     * ```js
+     * const {
+     *   generateKeyPair
+     * } = await import('crypto');
+     *
+     * generateKeyPair('rsa', {
+     *   modulusLength: 4096,
+     *   publicKeyEncoding: {
+     *     type: 'spki',
+     *     format: 'pem'
+     *   },
+     *   privateKeyEncoding: {
+     *     type: 'pkcs8',
+     *     format: 'pem',
+     *     cipher: 'aes-256-cbc',
+     *     passphrase: 'top secret'
+     *   }
+     * }, (err, publicKey, privateKey) => {
+     *   // Handle errors and use the generated key pair.
+     * });
+     * ```
+     *
+     * On completion, `callback` will be called with `err` set to `undefined` and`publicKey` / `privateKey` representing the generated key pair.
+     *
+     * If this method is invoked as its `util.promisify()` ed version, it returns
+     * a `Promise` for an `Object` with `publicKey` and `privateKey` properties.
+     * @since v10.12.0
+     * @param type Must be `'rsa'`, `'rsa-pss'`, `'dsa'`, `'ec'`, `'ed25519'`, `'ed448'`, `'x25519'`, `'x448'`, or `'dh'`.
+     */
+    function generateKeyPair(type: 'rsa', options: RSAKeyPairOptions<'pem', 'pem'>, callback: (err: Error | null, publicKey: string, privateKey: string) => void): void;
+    function generateKeyPair(type: 'rsa', options: RSAKeyPairOptions<'pem', 'der'>, callback: (err: Error | null, publicKey: string, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'rsa', options: RSAKeyPairOptions<'der', 'pem'>, callback: (err: Error | null, publicKey: Buffer, privateKey: string) => void): void;
+    function generateKeyPair(type: 'rsa', options: RSAKeyPairOptions<'der', 'der'>, callback: (err: Error | null, publicKey: Buffer, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'rsa', options: RSAKeyPairKeyObjectOptions, callback: (err: Error | null, publicKey: KeyObject, privateKey: KeyObject) => void): void;
+    function generateKeyPair(type: 'rsa-pss', options: RSAPSSKeyPairOptions<'pem', 'pem'>, callback: (err: Error | null, publicKey: string, privateKey: string) => void): void;
+    function generateKeyPair(type: 'rsa-pss', options: RSAPSSKeyPairOptions<'pem', 'der'>, callback: (err: Error | null, publicKey: string, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'rsa-pss', options: RSAPSSKeyPairOptions<'der', 'pem'>, callback: (err: Error | null, publicKey: Buffer, privateKey: string) => void): void;
+    function generateKeyPair(type: 'rsa-pss', options: RSAPSSKeyPairOptions<'der', 'der'>, callback: (err: Error | null, publicKey: Buffer, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'rsa-pss', options: RSAPSSKeyPairKeyObjectOptions, callback: (err: Error | null, publicKey: KeyObject, privateKey: KeyObject) => void): void;
+    function generateKeyPair(type: 'dsa', options: DSAKeyPairOptions<'pem', 'pem'>, callback: (err: Error | null, publicKey: string, privateKey: string) => void): void;
+    function generateKeyPair(type: 'dsa', options: DSAKeyPairOptions<'pem', 'der'>, callback: (err: Error | null, publicKey: string, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'dsa', options: DSAKeyPairOptions<'der', 'pem'>, callback: (err: Error | null, publicKey: Buffer, privateKey: string) => void): void;
+    function generateKeyPair(type: 'dsa', options: DSAKeyPairOptions<'der', 'der'>, callback: (err: Error | null, publicKey: Buffer, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'dsa', options: DSAKeyPairKeyObjectOptions, callback: (err: Error | null, publicKey: KeyObject, privateKey: KeyObject) => void): void;
+    function generateKeyPair(type: 'ec', options: ECKeyPairOptions<'pem', 'pem'>, callback: (err: Error | null, publicKey: string, privateKey: string) => void): void;
+    function generateKeyPair(type: 'ec', options: ECKeyPairOptions<'pem', 'der'>, callback: (err: Error | null, publicKey: string, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'ec', options: ECKeyPairOptions<'der', 'pem'>, callback: (err: Error | null, publicKey: Buffer, privateKey: string) => void): void;
+    function generateKeyPair(type: 'ec', options: ECKeyPairOptions<'der', 'der'>, callback: (err: Error | null, publicKey: Buffer, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'ec', options: ECKeyPairKeyObjectOptions, callback: (err: Error | null, publicKey: KeyObject, privateKey: KeyObject) => void): void;
+    function generateKeyPair(type: 'ed25519', options: ED25519KeyPairOptions<'pem', 'pem'>, callback: (err: Error | null, publicKey: string, privateKey: string) => void): void;
+    function generateKeyPair(type: 'ed25519', options: ED25519KeyPairOptions<'pem', 'der'>, callback: (err: Error | null, publicKey: string, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'ed25519', options: ED25519KeyPairOptions<'der', 'pem'>, callback: (err: Error | null, publicKey: Buffer, privateKey: string) => void): void;
+    function generateKeyPair(type: 'ed25519', options: ED25519KeyPairOptions<'der', 'der'>, callback: (err: Error | null, publicKey: Buffer, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'ed25519', options: ED25519KeyPairKeyObjectOptions | undefined, callback: (err: Error | null, publicKey: KeyObject, privateKey: KeyObject) => void): void;
+    function generateKeyPair(type: 'ed448', options: ED448KeyPairOptions<'pem', 'pem'>, callback: (err: Error | null, publicKey: string, privateKey: string) => void): void;
+    function generateKeyPair(type: 'ed448', options: ED448KeyPairOptions<'pem', 'der'>, callback: (err: Error | null, publicKey: string, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'ed448', options: ED448KeyPairOptions<'der', 'pem'>, callback: (err: Error | null, publicKey: Buffer, privateKey: string) => void): void;
+    function generateKeyPair(type: 'ed448', options: ED448KeyPairOptions<'der', 'der'>, callback: (err: Error | null, publicKey: Buffer, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'ed448', options: ED448KeyPairKeyObjectOptions | undefined, callback: (err: Error | null, publicKey: KeyObject, privateKey: KeyObject) => void): void;
+    function generateKeyPair(type: 'x25519', options: X25519KeyPairOptions<'pem', 'pem'>, callback: (err: Error | null, publicKey: string, privateKey: string) => void): void;
+    function generateKeyPair(type: 'x25519', options: X25519KeyPairOptions<'pem', 'der'>, callback: (err: Error | null, publicKey: string, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'x25519', options: X25519KeyPairOptions<'der', 'pem'>, callback: (err: Error | null, publicKey: Buffer, privateKey: string) => void): void;
+    function generateKeyPair(type: 'x25519', options: X25519KeyPairOptions<'der', 'der'>, callback: (err: Error | null, publicKey: Buffer, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'x25519', options: X25519KeyPairKeyObjectOptions | undefined, callback: (err: Error | null, publicKey: KeyObject, privateKey: KeyObject) => void): void;
+    function generateKeyPair(type: 'x448', options: X448KeyPairOptions<'pem', 'pem'>, callback: (err: Error | null, publicKey: string, privateKey: string) => void): void;
+    function generateKeyPair(type: 'x448', options: X448KeyPairOptions<'pem', 'der'>, callback: (err: Error | null, publicKey: string, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'x448', options: X448KeyPairOptions<'der', 'pem'>, callback: (err: Error | null, publicKey: Buffer, privateKey: string) => void): void;
+    function generateKeyPair(type: 'x448', options: X448KeyPairOptions<'der', 'der'>, callback: (err: Error | null, publicKey: Buffer, privateKey: Buffer) => void): void;
+    function generateKeyPair(type: 'x448', options: X448KeyPairKeyObjectOptions | undefined, callback: (err: Error | null, publicKey: KeyObject, privateKey: KeyObject) => void): void;
+    namespace generateKeyPair {
+        function __promisify__(
+            type: 'rsa',
+            options: RSAKeyPairOptions<'pem', 'pem'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'rsa',
+            options: RSAKeyPairOptions<'pem', 'der'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(
+            type: 'rsa',
+            options: RSAKeyPairOptions<'der', 'pem'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'rsa',
+            options: RSAKeyPairOptions<'der', 'der'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(type: 'rsa', options: RSAKeyPairKeyObjectOptions): Promise<KeyPairKeyObjectResult>;
+        function __promisify__(
+            type: 'rsa-pss',
+            options: RSAPSSKeyPairOptions<'pem', 'pem'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'rsa-pss',
+            options: RSAPSSKeyPairOptions<'pem', 'der'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(
+            type: 'rsa-pss',
+            options: RSAPSSKeyPairOptions<'der', 'pem'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'rsa-pss',
+            options: RSAPSSKeyPairOptions<'der', 'der'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(type: 'rsa-pss', options: RSAPSSKeyPairKeyObjectOptions): Promise<KeyPairKeyObjectResult>;
+        function __promisify__(
+            type: 'dsa',
+            options: DSAKeyPairOptions<'pem', 'pem'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'dsa',
+            options: DSAKeyPairOptions<'pem', 'der'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(
+            type: 'dsa',
+            options: DSAKeyPairOptions<'der', 'pem'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'dsa',
+            options: DSAKeyPairOptions<'der', 'der'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(type: 'dsa', options: DSAKeyPairKeyObjectOptions): Promise<KeyPairKeyObjectResult>;
+        function __promisify__(
+            type: 'ec',
+            options: ECKeyPairOptions<'pem', 'pem'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'ec',
+            options: ECKeyPairOptions<'pem', 'der'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(
+            type: 'ec',
+            options: ECKeyPairOptions<'der', 'pem'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'ec',
+            options: ECKeyPairOptions<'der', 'der'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(type: 'ec', options: ECKeyPairKeyObjectOptions): Promise<KeyPairKeyObjectResult>;
+        function __promisify__(
+            type: 'ed25519',
+            options: ED25519KeyPairOptions<'pem', 'pem'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'ed25519',
+            options: ED25519KeyPairOptions<'pem', 'der'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(
+            type: 'ed25519',
+            options: ED25519KeyPairOptions<'der', 'pem'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'ed25519',
+            options: ED25519KeyPairOptions<'der', 'der'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(type: 'ed25519', options?: ED25519KeyPairKeyObjectOptions): Promise<KeyPairKeyObjectResult>;
+        function __promisify__(
+            type: 'ed448',
+            options: ED448KeyPairOptions<'pem', 'pem'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'ed448',
+            options: ED448KeyPairOptions<'pem', 'der'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(
+            type: 'ed448',
+            options: ED448KeyPairOptions<'der', 'pem'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'ed448',
+            options: ED448KeyPairOptions<'der', 'der'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(type: 'ed448', options?: ED448KeyPairKeyObjectOptions): Promise<KeyPairKeyObjectResult>;
+        function __promisify__(
+            type: 'x25519',
+            options: X25519KeyPairOptions<'pem', 'pem'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'x25519',
+            options: X25519KeyPairOptions<'pem', 'der'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(
+            type: 'x25519',
+            options: X25519KeyPairOptions<'der', 'pem'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'x25519',
+            options: X25519KeyPairOptions<'der', 'der'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(type: 'x25519', options?: X25519KeyPairKeyObjectOptions): Promise<KeyPairKeyObjectResult>;
+        function __promisify__(
+            type: 'x448',
+            options: X448KeyPairOptions<'pem', 'pem'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'x448',
+            options: X448KeyPairOptions<'pem', 'der'>
+        ): Promise<{
+            publicKey: string;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(
+            type: 'x448',
+            options: X448KeyPairOptions<'der', 'pem'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: string;
+        }>;
+        function __promisify__(
+            type: 'x448',
+            options: X448KeyPairOptions<'der', 'der'>
+        ): Promise<{
+            publicKey: Buffer;
+            privateKey: Buffer;
+        }>;
+        function __promisify__(type: 'x448', options?: X448KeyPairKeyObjectOptions): Promise<KeyPairKeyObjectResult>;
+    }
+    /**
+     * Calculates and returns the signature for `data` using the given private key and
+     * algorithm. If `algorithm` is `null` or `undefined`, then the algorithm is
+     * dependent upon the key type (especially Ed25519 and Ed448).
+     *
+     * If `key` is not a `KeyObject`, this function behaves as if `key` had been
+     * passed to {@link createPrivateKey}. If it is an object, the following
+     * additional properties can be passed:
+     *
+     * If the `callback` function is provided this function uses libuv's threadpool.
+     * @since v12.0.0
+     */
+    function sign(algorithm: string | null | undefined, data: NodeJS.ArrayBufferView, key: KeyLike | SignKeyObjectInput | SignPrivateKeyInput): Buffer;
+    function sign(
+        algorithm: string | null | undefined,
+        data: NodeJS.ArrayBufferView,
+        key: KeyLike | SignKeyObjectInput | SignPrivateKeyInput,
+        callback: (error: Error | null, data: Buffer) => void
+    ): void;
+    /**
+     * Verifies the given signature for `data` using the given key and algorithm. If`algorithm` is `null` or `undefined`, then the algorithm is dependent upon the
+     * key type (especially Ed25519 and Ed448).
+     *
+     * If `key` is not a `KeyObject`, this function behaves as if `key` had been
+     * passed to {@link createPublicKey}. If it is an object, the following
+     * additional properties can be passed:
+     *
+     * The `signature` argument is the previously calculated signature for the `data`.
+     *
+     * Because public keys can be derived from private keys, a private key or a public
+     * key may be passed for `key`.
+     *
+     * If the `callback` function is provided this function uses libuv's threadpool.
+     * @since v12.0.0
+     */
+    function verify(algorithm: string | null | undefined, data: NodeJS.ArrayBufferView, key: KeyLike | VerifyKeyObjectInput | VerifyPublicKeyInput, signature: NodeJS.ArrayBufferView): boolean;
+    function verify(
+        algorithm: string | null | undefined,
+        data: NodeJS.ArrayBufferView,
+        key: KeyLike | VerifyKeyObjectInput | VerifyPublicKeyInput,
+        signature: NodeJS.ArrayBufferView,
+        callback: (error: Error | null, result: boolean) => void
+    ): void;
+    /**
+     * Computes the Diffie-Hellman secret based on a `privateKey` and a `publicKey`.
+     * Both keys must have the same `asymmetricKeyType`, which must be one of `'dh'`(for Diffie-Hellman), `'ec'` (for ECDH), `'x448'`, or `'x25519'` (for ECDH-ES).
+     * @since v13.9.0, v12.17.0
+     */
+    function diffieHellman(options: { privateKey: KeyObject; publicKey: KeyObject }): Buffer;
+    type CipherMode = 'cbc' | 'ccm' | 'cfb' | 'ctr' | 'ecb' | 'gcm' | 'ocb' | 'ofb' | 'stream' | 'wrap' | 'xts';
+    interface CipherInfoOptions {
+        /**
+         * A test key length.
+         */
+        keyLength?: number | undefined;
+        /**
+         * A test IV length.
+         */
+        ivLength?: number | undefined;
+    }
+    interface CipherInfo {
+        /**
+         * The name of the cipher.
+         */
+        name: string;
+        /**
+         * The nid of the cipher.
+         */
+        nid: number;
+        /**
+         * The block size of the cipher in bytes.
+         * This property is omitted when mode is 'stream'.
+         */
+        blockSize?: number | undefined;
+        /**
+         * The expected or default initialization vector length in bytes.
+         * This property is omitted if the cipher does not use an initialization vector.
+         */
+        ivLength?: number | undefined;
+        /**
+         * The expected or default key length in bytes.
+         */
+        keyLength: number;
+        /**
+         * The cipher mode.
+         */
+        mode: CipherMode;
+    }
+    /**
+     * Returns information about a given cipher.
+     *
+     * Some ciphers accept variable length keys and initialization vectors. By default,
+     * the `crypto.getCipherInfo()` method will return the default values for these
+     * ciphers. To test if a given key length or iv length is acceptable for given
+     * cipher, use the `keyLength` and `ivLength` options. If the given values are
+     * unacceptable, `undefined` will be returned.
+     * @since v15.0.0
+     * @param nameOrNid The name or nid of the cipher to query.
+     */
+    function getCipherInfo(nameOrNid: string | number, options?: CipherInfoOptions): CipherInfo | undefined;
+    /**
+     * HKDF is a simple key derivation function defined in RFC 5869\. The given `ikm`,`salt` and `info` are used with the `digest` to derive a key of `keylen` bytes.
+     *
+     * The supplied `callback` function is called with two arguments: `err` and`derivedKey`. If an errors occurs while deriving the key, `err` will be set;
+     * otherwise `err` will be `null`. The successfully generated `derivedKey` will
+     * be passed to the callback as an [ArrayBuffer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer). An error will be thrown if any
+     * of the input arguments specify invalid values or types.
+     *
+     * ```js
+     * import { Buffer } from 'buffer';
+     * const {
+     *   hkdf
+     * } = await import('crypto');
+     *
+     * hkdf('sha512', 'key', 'salt', 'info', 64, (err, derivedKey) => {
+     *   if (err) throw err;
+     *   console.log(Buffer.from(derivedKey).toString('hex'));  // '24156e2...5391653'
+     * });
+     * ```
+     * @since v15.0.0
+     * @param digest The digest algorithm to use.
+     * @param ikm The input keying material. It must be at least one byte in length.
+     * @param salt The salt value. Must be provided but can be zero-length.
+     * @param info Additional info value. Must be provided but can be zero-length, and cannot be more than 1024 bytes.
+     * @param keylen The length of the key to generate. Must be greater than 0. The maximum allowable value is `255` times the number of bytes produced by the selected digest function (e.g. `sha512`
+     * generates 64-byte hashes, making the maximum HKDF output 16320 bytes).
+     */
+    function hkdf(digest: string, irm: BinaryLike | KeyObject, salt: BinaryLike, info: BinaryLike, keylen: number, callback: (err: Error | null, derivedKey: ArrayBuffer) => void): void;
+    /**
+     * Provides a synchronous HKDF key derivation function as defined in RFC 5869\. The
+     * given `ikm`, `salt` and `info` are used with the `digest` to derive a key of`keylen` bytes.
+     *
+     * The successfully generated `derivedKey` will be returned as an [ArrayBuffer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer).
+     *
+     * An error will be thrown if any of the input arguments specify invalid values or
+     * types, or if the derived key cannot be generated.
+     *
+     * ```js
+     * import { Buffer } from 'buffer';
+     * const {
+     *   hkdfSync
+     * } = await import('crypto');
+     *
+     * const derivedKey = hkdfSync('sha512', 'key', 'salt', 'info', 64);
+     * console.log(Buffer.from(derivedKey).toString('hex'));  // '24156e2...5391653'
+     * ```
+     * @since v15.0.0
+     * @param digest The digest algorithm to use.
+     * @param ikm The input keying material. It must be at least one byte in length.
+     * @param salt The salt value. Must be provided but can be zero-length.
+     * @param info Additional info value. Must be provided but can be zero-length, and cannot be more than 1024 bytes.
+     * @param keylen The length of the key to generate. Must be greater than 0. The maximum allowable value is `255` times the number of bytes produced by the selected digest function (e.g. `sha512`
+     * generates 64-byte hashes, making the maximum HKDF output 16320 bytes).
+     */
+    function hkdfSync(digest: string, ikm: BinaryLike | KeyObject, salt: BinaryLike, info: BinaryLike, keylen: number): ArrayBuffer;
+    interface SecureHeapUsage {
+        /**
+         * The total allocated secure heap size as specified using the `--secure-heap=n` command-line flag.
+         */
+        total: number;
+        /**
+         * The minimum allocation from the secure heap as specified using the `--secure-heap-min` command-line flag.
+         */
+        min: number;
+        /**
+         * The total number of bytes currently allocated from the secure heap.
+         */
+        used: number;
+        /**
+         * The calculated ratio of `used` to `total` allocated bytes.
+         */
+        utilization: number;
+    }
+    /**
+     * @since v15.6.0
+     */
+    function secureHeapUsed(): SecureHeapUsage;
+    interface RandomUUIDOptions {
+        /**
+         * By default, to improve performance,
+         * Node.js will pre-emptively generate and persistently cache enough
+         * random data to generate up to 128 random UUIDs. To generate a UUID
+         * without using the cache, set `disableEntropyCache` to `true`.
+         *
+         * @default `false`
+         */
+        disableEntropyCache?: boolean | undefined;
+    }
+    /**
+     * Generates a random [RFC 4122](https://www.rfc-editor.org/rfc/rfc4122.txt) version 4 UUID. The UUID is generated using a
+     * cryptographic pseudorandom number generator.
+     * @since v15.6.0, v14.17.0
+     */
+    function randomUUID(options?: RandomUUIDOptions): string;
+    interface X509CheckOptions {
+        /**
+         * @default 'always'
+         */
+        subject: 'always' | 'never';
+        /**
+         * @default true
+         */
+        wildcards: boolean;
+        /**
+         * @default true
+         */
+        partialWildcards: boolean;
+        /**
+         * @default false
+         */
+        multiLabelWildcards: boolean;
+        /**
+         * @default false
+         */
+        singleLabelSubdomains: boolean;
+    }
+    /**
+     * Encapsulates an X509 certificate and provides read-only access to
+     * its information.
+     *
+     * ```js
+     * const { X509Certificate } = await import('crypto');
+     *
+     * const x509 = new X509Certificate('{... pem encoded cert ...}');
+     *
+     * console.log(x509.subject);
+     * ```
+     * @since v15.6.0
+     */
+    class X509Certificate {
+        /**
+         * Will be \`true\` if this is a Certificate Authority (CA) certificate.
+         * @since v15.6.0
+         */
+        readonly ca: boolean;
+        /**
+         * The SHA-1 fingerprint of this certificate.
+         *
+         * Because SHA-1 is cryptographically broken and because the security of SHA-1 is
+         * significantly worse than that of algorithms that are commonly used to sign
+         * certificates, consider using `x509.fingerprint256` instead.
+         * @since v15.6.0
+         */
+        readonly fingerprint: string;
+        /**
+         * The SHA-256 fingerprint of this certificate.
+         * @since v15.6.0
+         */
+        readonly fingerprint256: string;
+        /**
+         * The SHA-512 fingerprint of this certificate.
+         * @since v16.14.0
+         */
+         readonly fingerprint512: string;
+        /**
+         * The complete subject of this certificate.
+         * @since v15.6.0
+         */
+        readonly subject: string;
+        /**
+         * The subject alternative name specified for this certificate or `undefined`
+         * if not available.
+         * @since v15.6.0
+         */
+        readonly subjectAltName: string | undefined;
+        /**
+         * The information access content of this certificate or `undefined` if not
+         * available.
+         * @since v15.6.0
+         */
+        readonly infoAccess: string | undefined;
+        /**
+         * An array detailing the key usages for this certificate.
+         * @since v15.6.0
+         */
+        readonly keyUsage: string[];
+        /**
+         * The issuer identification included in this certificate.
+         * @since v15.6.0
+         */
+        readonly issuer: string;
+        /**
+         * The issuer certificate or `undefined` if the issuer certificate is not
+         * available.
+         * @since v15.9.0
+         */
+        readonly issuerCertificate?: X509Certificate | undefined;
+        /**
+         * The public key `KeyObject` for this certificate.
+         * @since v15.6.0
+         */
+        readonly publicKey: KeyObject;
+        /**
+         * A `Buffer` containing the DER encoding of this certificate.
+         * @since v15.6.0
+         */
+        readonly raw: Buffer;
+        /**
+         * The serial number of this certificate.
+         *
+         * Serial numbers are assigned by certificate authorities and do not uniquely
+         * identify certificates. Consider using `x509.fingerprint256` as a unique
+         * identifier instead.
+         * @since v15.6.0
+         */
+        readonly serialNumber: string;
+        /**
+         * The date/time from which this certificate is considered valid.
+         * @since v15.6.0
+         */
+        readonly validFrom: string;
+        /**
+         * The date/time until which this certificate is considered valid.
+         * @since v15.6.0
+         */
+        readonly validTo: string;
+        constructor(buffer: BinaryLike);
+        /**
+         * Checks whether the certificate matches the given email address.
+         *
+         * If the `'subject'` option is undefined or set to `'default'`, the certificate
+         * subject is only considered if the subject alternative name extension either does
+         * not exist or does not contain any email addresses.
+         *
+         * If the `'subject'` option is set to `'always'` and if the subject alternative
+         * name extension either does not exist or does not contain a matching email
+         * address, the certificate subject is considered.
+         *
+         * If the `'subject'` option is set to `'never'`, the certificate subject is never
+         * considered, even if the certificate contains no subject alternative names.
+         * @since v15.6.0
+         * @return Returns `email` if the certificate matches, `undefined` if it does not.
+         */
+        checkEmail(email: string, options?: Pick<X509CheckOptions, 'subject'>): string | undefined;
+        /**
+         * Checks whether the certificate matches the given host name.
+         *
+         * If the certificate matches the given host name, the matching subject name is
+         * returned. The returned name might be an exact match (e.g., `foo.example.com`)
+         * or it might contain wildcards (e.g., `*.example.com`). Because host name
+         * comparisons are case-insensitive, the returned subject name might also differ
+         * from the given `name` in capitalization.
+         *
+         * If the `'subject'` option is undefined or set to `'default'`, the certificate
+         * subject is only considered if the subject alternative name extension either does
+         * not exist or does not contain any DNS names. This behavior is consistent with [RFC 2818](https://www.rfc-editor.org/rfc/rfc2818.txt) ("HTTP Over TLS").
+         *
+         * If the `'subject'` option is set to `'always'` and if the subject alternative
+         * name extension either does not exist or does not contain a matching DNS name,
+         * the certificate subject is considered.
+         *
+         * If the `'subject'` option is set to `'never'`, the certificate subject is never
+         * considered, even if the certificate contains no subject alternative names.
+         * @since v15.6.0
+         * @return Returns a subject name that matches `name`, or `undefined` if no subject name matches `name`.
+         */
+        checkHost(name: string, options?: X509CheckOptions): string | undefined;
+        /**
+         * Checks whether the certificate matches the given IP address (IPv4 or IPv6).
+         *
+         * Only [RFC 5280](https://www.rfc-editor.org/rfc/rfc5280.txt) `iPAddress` subject alternative names are considered, and they
+         * must match the given `ip` address exactly. Other subject alternative names as
+         * well as the subject field of the certificate are ignored.
+         * @since v15.6.0
+         * @return Returns `ip` if the certificate matches, `undefined` if it does not.
+         */
+        checkIP(ip: string): string | undefined;
+        /**
+         * Checks whether this certificate was issued by the given `otherCert`.
+         * @since v15.6.0
+         */
+        checkIssued(otherCert: X509Certificate): boolean;
+        /**
+         * Checks whether the public key for this certificate is consistent with
+         * the given private key.
+         * @since v15.6.0
+         * @param privateKey A private key.
+         */
+        checkPrivateKey(privateKey: KeyObject): boolean;
+        /**
+         * There is no standard JSON encoding for X509 certificates. The`toJSON()` method returns a string containing the PEM encoded
+         * certificate.
+         * @since v15.6.0
+         */
+        toJSON(): string;
+        /**
+         * Returns information about this certificate using the legacy `certificate object` encoding.
+         * @since v15.6.0
+         */
+        toLegacyObject(): PeerCertificate;
+        /**
+         * Returns the PEM-encoded certificate.
+         * @since v15.6.0
+         */
+        toString(): string;
+        /**
+         * Verifies that this certificate was signed by the given public key.
+         * Does not perform any other validation checks on the certificate.
+         * @since v15.6.0
+         * @param publicKey A public key.
+         */
+        verify(publicKey: KeyObject): boolean;
+    }
+    type LargeNumberLike = NodeJS.ArrayBufferView | SharedArrayBuffer | ArrayBuffer | bigint;
+    interface GeneratePrimeOptions {
+        add?: LargeNumberLike | undefined;
+        rem?: LargeNumberLike | undefined;
+        /**
+         * @default false
+         */
+        safe?: boolean | undefined;
+        bigint?: boolean | undefined;
+    }
+    interface GeneratePrimeOptionsBigInt extends GeneratePrimeOptions {
+        bigint: true;
+    }
+    interface GeneratePrimeOptionsArrayBuffer extends GeneratePrimeOptions {
+        bigint?: false | undefined;
+    }
+    /**
+     * Generates a pseudorandom prime of `size` bits.
+     *
+     * If `options.safe` is `true`, the prime will be a safe prime -- that is,`(prime - 1) / 2` will also be a prime.
+     *
+     * The `options.add` and `options.rem` parameters can be used to enforce additional
+     * requirements, e.g., for Diffie-Hellman:
+     *
+     * * If `options.add` and `options.rem` are both set, the prime will satisfy the
+     * condition that `prime % add = rem`.
+     * * If only `options.add` is set and `options.safe` is not `true`, the prime will
+     * satisfy the condition that `prime % add = 1`.
+     * * If only `options.add` is set and `options.safe` is set to `true`, the prime
+     * will instead satisfy the condition that `prime % add = 3`. This is necessary
+     * because `prime % add = 1` for `options.add > 2` would contradict the condition
+     * enforced by `options.safe`.
+     * * `options.rem` is ignored if `options.add` is not given.
+     *
+     * Both `options.add` and `options.rem` must be encoded as big-endian sequences
+     * if given as an `ArrayBuffer`, `SharedArrayBuffer`, `TypedArray`, `Buffer`, or`DataView`.
+     *
+     * By default, the prime is encoded as a big-endian sequence of octets
+     * in an [ArrayBuffer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer). If the `bigint` option is `true`, then a
+     * [bigint](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt) is provided.
+     * @since v15.8.0
+     * @param size The size (in bits) of the prime to generate.
+     */
+    function generatePrime(size: number, callback: (err: Error | null, prime: ArrayBuffer) => void): void;
+    function generatePrime(size: number, options: GeneratePrimeOptionsBigInt, callback: (err: Error | null, prime: bigint) => void): void;
+    function generatePrime(size: number, options: GeneratePrimeOptionsArrayBuffer, callback: (err: Error | null, prime: ArrayBuffer) => void): void;
+    function generatePrime(size: number, options: GeneratePrimeOptions, callback: (err: Error | null, prime: ArrayBuffer | bigint) => void): void;
+    /**
+     * Generates a pseudorandom prime of `size` bits.
+     *
+     * If `options.safe` is `true`, the prime will be a safe prime -- that is,`(prime - 1) / 2` will also be a prime.
+     *
+     * The `options.add` and `options.rem` parameters can be used to enforce additional
+     * requirements, e.g., for Diffie-Hellman:
+     *
+     * * If `options.add` and `options.rem` are both set, the prime will satisfy the
+     * condition that `prime % add = rem`.
+     * * If only `options.add` is set and `options.safe` is not `true`, the prime will
+     * satisfy the condition that `prime % add = 1`.
+     * * If only `options.add` is set and `options.safe` is set to `true`, the prime
+     * will instead satisfy the condition that `prime % add = 3`. This is necessary
+     * because `prime % add = 1` for `options.add > 2` would contradict the condition
+     * enforced by `options.safe`.
+     * * `options.rem` is ignored if `options.add` is not given.
+     *
+     * Both `options.add` and `options.rem` must be encoded as big-endian sequences
+     * if given as an `ArrayBuffer`, `SharedArrayBuffer`, `TypedArray`, `Buffer`, or`DataView`.
+     *
+     * By default, the prime is encoded as a big-endian sequence of octets
+     * in an [ArrayBuffer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer). If the `bigint` option is `true`, then a
+     * [bigint](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt) is provided.
+     * @since v15.8.0
+     * @param size The size (in bits) of the prime to generate.
+     */
+    function generatePrimeSync(size: number): ArrayBuffer;
+    function generatePrimeSync(size: number, options: GeneratePrimeOptionsBigInt): bigint;
+    function generatePrimeSync(size: number, options: GeneratePrimeOptionsArrayBuffer): ArrayBuffer;
+    function generatePrimeSync(size: number, options: GeneratePrimeOptions): ArrayBuffer | bigint;
+    interface CheckPrimeOptions {
+        /**
+         * The number of Miller-Rabin probabilistic primality iterations to perform.
+         * When the value is 0 (zero), a number of checks is used that yields a false positive rate of at most 2-64 for random input.
+         * Care must be used when selecting a number of checks.
+         * Refer to the OpenSSL documentation for the BN_is_prime_ex function nchecks options for more details.
+         *
+         * @default 0
+         */
+        checks?: number | undefined;
+    }
+    /**
+     * Checks the primality of the `candidate`.
+     * @since v15.8.0
+     * @param candidate A possible prime encoded as a sequence of big endian octets of arbitrary length.
+     */
+    function checkPrime(value: LargeNumberLike, callback: (err: Error | null, result: boolean) => void): void;
+    function checkPrime(value: LargeNumberLike, options: CheckPrimeOptions, callback: (err: Error | null, result: boolean) => void): void;
+    /**
+     * Checks the primality of the `candidate`.
+     * @since v15.8.0
+     * @param candidate A possible prime encoded as a sequence of big endian octets of arbitrary length.
+     * @return `true` if the candidate is a prime with an error probability less than `0.25 ** options.checks`.
+     */
+    function checkPrimeSync(candidate: LargeNumberLike, options?: CheckPrimeOptions): boolean;
+    /**
+     * Load and set the `engine` for some or all OpenSSL functions (selected by flags).
+     *
+     * `engine` could be either an id or a path to the engine's shared library.
+     *
+     * The optional `flags` argument uses `ENGINE_METHOD_ALL` by default.
+     * The `flags` is a bit field taking one of or a mix of the following flags (defined in `crypto.constants`):
+     *
+     * - `crypto.constants.ENGINE_METHOD_RSA`
+     * - `crypto.constants.ENGINE_METHOD_DSA`
+     * - `crypto.constants.ENGINE_METHOD_DH`
+     * - `crypto.constants.ENGINE_METHOD_RAND`
+     * - `crypto.constants.ENGINE_METHOD_EC`
+     * - `crypto.constants.ENGINE_METHOD_CIPHERS`
+     * - `crypto.constants.ENGINE_METHOD_DIGESTS`
+     * - `crypto.constants.ENGINE_METHOD_PKEY_METHS`
+     * - `crypto.constants.ENGINE_METHOD_PKEY_ASN1_METHS`
+     * - `crypto.constants.ENGINE_METHOD_ALL`
+     * - `crypto.constants.ENGINE_METHOD_NONE`
+     *
+     * The flags below are deprecated in OpenSSL-1.1.0.
+     *
+     * - `crypto.constants.ENGINE_METHOD_ECDH`
+     * - `crypto.constants.ENGINE_METHOD_ECDSA`
+     * - `crypto.constants.ENGINE_METHOD_STORE`
+     * @since v0.11.11
+     * @param [flags=crypto.constants.ENGINE_METHOD_ALL]
+     */
+    function setEngine(engine: string, flags?: number): void;
+    /**
+     * A convenient alias for `crypto.webcrypto.getRandomValues()`.
+     * This implementation is not compliant with the Web Crypto spec,
+     * to write web-compatible code use `crypto.webcrypto.getRandomValues()` instead.
+     * @since v17.4.0
+     * @returns Returns `typedArray`.
+     */
+    function getRandomValues<T extends webcrypto.BufferSource>(typedArray: T): T;
+    /**
+     * A convenient alias for `crypto.webcrypto.subtle`.
+     * @since v17.4.0
+     */
+    const subtle: webcrypto.SubtleCrypto;
+    /**
+     * An implementation of the Web Crypto API standard.
+     *
+     * See the {@link https://nodejs.org/docs/latest/api/webcrypto.html Web Crypto API documentation} for details.
+     * @since v15.0.0
+     */
+    const webcrypto: webcrypto.Crypto;
+    namespace webcrypto {
+        type BufferSource = ArrayBufferView | ArrayBuffer;
+        type KeyFormat = 'jwk' | 'pkcs8' | 'raw' | 'spki';
+        type KeyType = 'private' | 'public' | 'secret';
+        type KeyUsage = 'decrypt' | 'deriveBits' | 'deriveKey' | 'encrypt' | 'sign' | 'unwrapKey' | 'verify' | 'wrapKey';
+        type AlgorithmIdentifier = Algorithm | string;
+        type HashAlgorithmIdentifier = AlgorithmIdentifier;
+        type NamedCurve = string;
+        type BigInteger = Uint8Array;
+        interface AesCbcParams extends Algorithm {
+            iv: BufferSource;
+        }
+        interface AesCtrParams extends Algorithm {
+            counter: BufferSource;
+            length: number;
+        }
+        interface AesDerivedKeyParams extends Algorithm {
+            length: number;
+        }
+        interface AesGcmParams extends Algorithm {
+            additionalData?: BufferSource;
+            iv: BufferSource;
+            tagLength?: number;
+        }
+        interface AesKeyAlgorithm extends KeyAlgorithm {
+            length: number;
+        }
+        interface AesKeyGenParams extends Algorithm {
+            length: number;
+        }
+        interface Algorithm {
+            name: string;
+        }
+        interface EcKeyAlgorithm extends KeyAlgorithm {
+            namedCurve: NamedCurve;
+        }
+        interface EcKeyGenParams extends Algorithm {
+            namedCurve: NamedCurve;
+        }
+        interface EcKeyImportParams extends Algorithm {
+            namedCurve: NamedCurve;
+        }
+        interface EcdhKeyDeriveParams extends Algorithm {
+            public: CryptoKey;
+        }
+        interface EcdsaParams extends Algorithm {
+            hash: HashAlgorithmIdentifier;
+        }
+        interface Ed448Params extends Algorithm {
+            context?: BufferSource;
+        }
+        interface HkdfParams extends Algorithm {
+            hash: HashAlgorithmIdentifier;
+            info: BufferSource;
+            salt: BufferSource;
+        }
+        interface HmacImportParams extends Algorithm {
+            hash: HashAlgorithmIdentifier;
+            length?: number;
+        }
+        interface HmacKeyAlgorithm extends KeyAlgorithm {
+            hash: KeyAlgorithm;
+            length: number;
+        }
+        interface HmacKeyGenParams extends Algorithm {
+            hash: HashAlgorithmIdentifier;
+            length?: number;
+        }
+        interface JsonWebKey {
+            alg?: string;
+            crv?: string;
+            d?: string;
+            dp?: string;
+            dq?: string;
+            e?: string;
+            ext?: boolean;
+            k?: string;
+            key_ops?: string[];
+            kty?: string;
+            n?: string;
+            oth?: RsaOtherPrimesInfo[];
+            p?: string;
+            q?: string;
+            qi?: string;
+            use?: string;
+            x?: string;
+            y?: string;
+        }
+        interface KeyAlgorithm {
+            name: string;
+        }
+        interface Pbkdf2Params extends Algorithm {
+            hash: HashAlgorithmIdentifier;
+            iterations: number;
+            salt: BufferSource;
+        }
+        interface RsaHashedImportParams extends Algorithm {
+            hash: HashAlgorithmIdentifier;
+        }
+        interface RsaHashedKeyAlgorithm extends RsaKeyAlgorithm {
+            hash: KeyAlgorithm;
+        }
+        interface RsaHashedKeyGenParams extends RsaKeyGenParams {
+            hash: HashAlgorithmIdentifier;
+        }
+        interface RsaKeyAlgorithm extends KeyAlgorithm {
+            modulusLength: number;
+            publicExponent: BigInteger;
+        }
+        interface RsaKeyGenParams extends Algorithm {
+            modulusLength: number;
+            publicExponent: BigInteger;
+        }
+        interface RsaOaepParams extends Algorithm {
+            label?: BufferSource;
+        }
+        interface RsaOtherPrimesInfo {
+            d?: string;
+            r?: string;
+            t?: string;
+        }
+        interface RsaPssParams extends Algorithm {
+            saltLength: number;
+        }
+        /**
+         * Calling `require('node:crypto').webcrypto` returns an instance of the `Crypto` class.
+         * `Crypto` is a singleton that provides access to the remainder of the crypto API.
+         * @since v15.0.0
+         */
+        interface Crypto {
+            /**
+             * Provides access to the `SubtleCrypto` API.
+             * @since v15.0.0
+             */
+            readonly subtle: SubtleCrypto;
+            /**
+             * Generates cryptographically strong random values.
+             * The given `typedArray` is filled with random values, and a reference to `typedArray` is returned.
+             *
+             * The given `typedArray` must be an integer-based instance of {@link NodeJS.TypedArray}, i.e. `Float32Array` and `Float64Array` are not accepted.
+             *
+             * An error will be thrown if the given `typedArray` is larger than 65,536 bytes.
+             * @since v15.0.0
+             */
+            getRandomValues<T extends Exclude<NodeJS.TypedArray, Float32Array | Float64Array>>(typedArray: T): T;
+            /**
+             * Generates a random {@link https://www.rfc-editor.org/rfc/rfc4122.txt RFC 4122} version 4 UUID.
+             * The UUID is generated using a cryptographic pseudorandom number generator.
+             * @since v16.7.0
+             */
+            randomUUID(): string;
+            CryptoKey: CryptoKeyConstructor;
+        }
+        // This constructor throws ILLEGAL_CONSTRUCTOR so it should not be newable.
+        interface CryptoKeyConstructor {
+            /** Illegal constructor */
+            (_: { readonly _: unique symbol }): never; // Allows instanceof to work but not be callable by the user.
+            readonly length: 0;
+            readonly name: 'CryptoKey';
+            readonly prototype: CryptoKey;
+        }
+        /**
+         * @since v15.0.0
+         */
+        interface CryptoKey {
+            /**
+             * An object detailing the algorithm for which the key can be used along with additional algorithm-specific parameters.
+             * @since v15.0.0
+             */
+            readonly algorithm: KeyAlgorithm;
+            /**
+             * When `true`, the {@link CryptoKey} can be extracted using either `subtleCrypto.exportKey()` or `subtleCrypto.wrapKey()`.
+             * @since v15.0.0
+             */
+            readonly extractable: boolean;
+            /**
+             * A string identifying whether the key is a symmetric (`'secret'`) or asymmetric (`'private'` or `'public'`) key.
+             * @since v15.0.0
+             */
+            readonly type: KeyType;
+            /**
+             * An array of strings identifying the operations for which the key may be used.
+             *
+             * The possible usages are:
+             * - `'encrypt'` - The key may be used to encrypt data.
+             * - `'decrypt'` - The key may be used to decrypt data.
+             * - `'sign'` - The key may be used to generate digital signatures.
+             * - `'verify'` - The key may be used to verify digital signatures.
+             * - `'deriveKey'` - The key may be used to derive a new key.
+             * - `'deriveBits'` - The key may be used to derive bits.
+             * - `'wrapKey'` - The key may be used to wrap another key.
+             * - `'unwrapKey'` - The key may be used to unwrap another key.
+             *
+             * Valid key usages depend on the key algorithm (identified by `cryptokey.algorithm.name`).
+             * @since v15.0.0
+             */
+            readonly usages: KeyUsage[];
+        }
+        /**
+         * The `CryptoKeyPair` is a simple dictionary object with `publicKey` and `privateKey` properties, representing an asymmetric key pair.
+         * @since v15.0.0
+         */
+        interface CryptoKeyPair {
+            /**
+             * A {@link CryptoKey} whose type will be `'private'`.
+             * @since v15.0.0
+             */
+            privateKey: CryptoKey;
+            /**
+             * A {@link CryptoKey} whose type will be `'public'`.
+             * @since v15.0.0
+             */
+            publicKey: CryptoKey;
+        }
+        /**
+         * @since v15.0.0
+         */
+        interface SubtleCrypto {
+            /**
+             * Using the method and parameters specified in `algorithm` and the keying material provided by `key`,
+             * `subtle.decrypt()` attempts to decipher the provided `data`. If successful,
+             * the returned promise will be resolved with an `<ArrayBuffer>` containing the plaintext result.
+             *
+             * The algorithms currently supported include:
+             *
+             * - `'RSA-OAEP'`
+             * - `'AES-CTR'`
+             * - `'AES-CBC'`
+             * - `'AES-GCM'`
+             * @since v15.0.0
+             */
+            decrypt(algorithm: AlgorithmIdentifier | RsaOaepParams | AesCtrParams | AesCbcParams | AesGcmParams, key: CryptoKey, data: BufferSource): Promise<ArrayBuffer>;
+            /**
+             * Using the method and parameters specified in `algorithm` and the keying material provided by `baseKey`,
+             * `subtle.deriveBits()` attempts to generate `length` bits.
+             * The Node.js implementation requires that `length` is a multiple of `8`.
+             * If successful, the returned promise will be resolved with an `<ArrayBuffer>` containing the generated data.
+             *
+             * The algorithms currently supported include:
+             *
+             * - `'ECDH'`
+             * - `'X25519'`
+             * - `'X448'`
+             * - `'HKDF'`
+             * - `'PBKDF2'`
+             * @since v15.0.0
+             */
+            deriveBits(algorithm: AlgorithmIdentifier | EcdhKeyDeriveParams | HkdfParams | Pbkdf2Params, baseKey: CryptoKey, length: number): Promise<ArrayBuffer>;
+            /**
+             * Using the method and parameters specified in `algorithm`, and the keying material provided by `baseKey`,
+             * `subtle.deriveKey()` attempts to generate a new <CryptoKey>` based on the method and parameters in `derivedKeyAlgorithm`.
+             *
+             * Calling `subtle.deriveKey()` is equivalent to calling `subtle.deriveBits()` to generate raw keying material,
+             * then passing the result into the `subtle.importKey()` method using the `deriveKeyAlgorithm`, `extractable`, and `keyUsages` parameters as input.
+             *
+             * The algorithms currently supported include:
+             *
+             * - `'ECDH'`
+             * - `'X25519'`
+             * - `'X448'`
+             * - `'HKDF'`
+             * - `'PBKDF2'`
+             * @param keyUsages See {@link https://nodejs.org/docs/latest/api/webcrypto.html#cryptokeyusages Key usages}.
+             * @since v15.0.0
+             */
+            deriveKey(
+                algorithm: AlgorithmIdentifier | EcdhKeyDeriveParams | HkdfParams | Pbkdf2Params,
+                baseKey: CryptoKey,
+                derivedKeyAlgorithm: AlgorithmIdentifier | AesDerivedKeyParams | HmacImportParams | HkdfParams | Pbkdf2Params,
+                extractable: boolean,
+                keyUsages: ReadonlyArray<KeyUsage>
+            ): Promise<CryptoKey>;
+            /**
+             * Using the method identified by `algorithm`, `subtle.digest()` attempts to generate a digest of `data`.
+             * If successful, the returned promise is resolved with an `<ArrayBuffer>` containing the computed digest.
+             *
+             * If `algorithm` is provided as a `<string>`, it must be one of:
+             *
+             * - `'SHA-1'`
+             * - `'SHA-256'`
+             * - `'SHA-384'`
+             * - `'SHA-512'`
+             *
+             * If `algorithm` is provided as an `<Object>`, it must have a `name` property whose value is one of the above.
+             * @since v15.0.0
+             */
+            digest(algorithm: AlgorithmIdentifier, data: BufferSource): Promise<ArrayBuffer>;
+            /**
+             * Using the method and parameters specified by `algorithm` and the keying material provided by `key`,
+             * `subtle.encrypt()` attempts to encipher `data`. If successful,
+             * the returned promise is resolved with an `<ArrayBuffer>` containing the encrypted result.
+             *
+             * The algorithms currently supported include:
+             *
+             * - `'RSA-OAEP'`
+             * - `'AES-CTR'`
+             * - `'AES-CBC'`
+             * - `'AES-GCM'`
+             * @since v15.0.0
+             */
+            encrypt(algorithm: AlgorithmIdentifier | RsaOaepParams | AesCtrParams | AesCbcParams | AesGcmParams, key: CryptoKey, data: BufferSource): Promise<ArrayBuffer>;
+            /**
+             * Exports the given key into the specified format, if supported.
+             *
+             * If the `<CryptoKey>` is not extractable, the returned promise will reject.
+             *
+             * When `format` is either `'pkcs8'` or `'spki'` and the export is successful,
+             * the returned promise will be resolved with an `<ArrayBuffer>` containing the exported key data.
+             *
+             * When `format` is `'jwk'` and the export is successful, the returned promise will be resolved with a
+             * JavaScript object conforming to the {@link https://tools.ietf.org/html/rfc7517 JSON Web Key} specification.
+             * @param format Must be one of `'raw'`, `'pkcs8'`, `'spki'`, or `'jwk'`.
+             * @returns `<Promise>` containing `<ArrayBuffer>`.
+             * @since v15.0.0
+             */
+            exportKey(format: 'jwk', key: CryptoKey): Promise<JsonWebKey>;
+            exportKey(format: Exclude<KeyFormat, 'jwk'>, key: CryptoKey): Promise<ArrayBuffer>;
+            /**
+             * Using the method and parameters provided in `algorithm`,
+             * `subtle.generateKey()` attempts to generate new keying material.
+             * Depending the method used, the method may generate either a single `<CryptoKey>` or a `<CryptoKeyPair>`.
+             *
+             * The `<CryptoKeyPair>` (public and private key) generating algorithms supported include:
+             *
+             * - `'RSASSA-PKCS1-v1_5'`
+             * - `'RSA-PSS'`
+             * - `'RSA-OAEP'`
+             * - `'ECDSA'`
+             * - `'Ed25519'`
+             * - `'Ed448'`
+             * - `'ECDH'`
+             * - `'X25519'`
+             * - `'X448'`
+             * The `<CryptoKey>` (secret key) generating algorithms supported include:
+             *
+             * - `'HMAC'`
+             * - `'AES-CTR'`
+             * - `'AES-CBC'`
+             * - `'AES-GCM'`
+             * - `'AES-KW'`
+             * @param keyUsages See {@link https://nodejs.org/docs/latest/api/webcrypto.html#cryptokeyusages Key usages}.
+             * @since v15.0.0
+             */
+            generateKey(algorithm: RsaHashedKeyGenParams | EcKeyGenParams, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKeyPair>;
+            generateKey(algorithm: AesKeyGenParams | HmacKeyGenParams | Pbkdf2Params, extractable: boolean, keyUsages: ReadonlyArray<KeyUsage>): Promise<CryptoKey>;
+            generateKey(algorithm: AlgorithmIdentifier, extractable: boolean, keyUsages: KeyUsage[]): Promise<CryptoKeyPair | CryptoKey>;
+            /**
+             * The `subtle.importKey()` method attempts to interpret the provided `keyData` as the given `format`
+             * to create a `<CryptoKey>` instance using the provided `algorithm`, `extractable`, and `keyUsages` arguments.
+             * If the import is successful, the returned promise will be resolved with the created `<CryptoKey>`.
+             *
+             * If importing a `'PBKDF2'` key, `extractable` must be `false`.
+             * @param format Must be one of `'raw'`, `'pkcs8'`, `'spki'`, or `'jwk'`.
+             * @param keyUsages See {@link https://nodejs.org/docs/latest/api/webcrypto.html#cryptokeyusages Key usages}.
+             * @since v15.0.0
+             */
+            importKey(
+                format: 'jwk',
+                keyData: JsonWebKey,
+                algorithm: AlgorithmIdentifier | RsaHashedImportParams | EcKeyImportParams | HmacImportParams | AesKeyAlgorithm,
+                extractable: boolean,
+                keyUsages: ReadonlyArray<KeyUsage>
+            ): Promise<CryptoKey>;
+            importKey(
+                format: Exclude<KeyFormat, 'jwk'>,
+                keyData: BufferSource,
+                algorithm: AlgorithmIdentifier | RsaHashedImportParams | EcKeyImportParams | HmacImportParams | AesKeyAlgorithm,
+                extractable: boolean,
+                keyUsages: KeyUsage[]
+            ): Promise<CryptoKey>;
+            /**
+             * Using the method and parameters given by `algorithm` and the keying material provided by `key`,
+             * `subtle.sign()` attempts to generate a cryptographic signature of `data`. If successful,
+             * the returned promise is resolved with an `<ArrayBuffer>` containing the generated signature.
+             *
+             * The algorithms currently supported include:
+             *
+             * - `'RSASSA-PKCS1-v1_5'`
+             * - `'RSA-PSS'`
+             * - `'ECDSA'`
+             * - `'Ed25519'`
+             * - `'Ed448'`
+             * - `'HMAC'`
+             * @since v15.0.0
+             */
+            sign(algorithm: AlgorithmIdentifier | RsaPssParams | EcdsaParams | Ed448Params, key: CryptoKey, data: BufferSource): Promise<ArrayBuffer>;
+            /**
+             * In cryptography, "wrapping a key" refers to exporting and then encrypting the keying material.
+             * The `subtle.unwrapKey()` method attempts to decrypt a wrapped key and create a `<CryptoKey>` instance.
+             * It is equivalent to calling `subtle.decrypt()` first on the encrypted key data (using the `wrappedKey`, `unwrapAlgo`, and `unwrappingKey` arguments as input)
+             * then passing the results in to the `subtle.importKey()` method using the `unwrappedKeyAlgo`, `extractable`, and `keyUsages` arguments as inputs.
+             * If successful, the returned promise is resolved with a `<CryptoKey>` object.
+             *
+             * The wrapping algorithms currently supported include:
+             *
+             * - `'RSA-OAEP'`
+             * - `'AES-CTR'`
+             * - `'AES-CBC'`
+             * - `'AES-GCM'`
+             * - `'AES-KW'`
+             *
+             * The unwrapped key algorithms supported include:
+             *
+             * - `'RSASSA-PKCS1-v1_5'`
+             * - `'RSA-PSS'`
+             * - `'RSA-OAEP'`
+             * - `'ECDSA'`
+             * - `'Ed25519'`
+             * - `'Ed448'`
+             * - `'ECDH'`
+             * - `'X25519'`
+             * - `'X448'`
+             * - `'HMAC'`
+             * - `'AES-CTR'`
+             * - `'AES-CBC'`
+             * - `'AES-GCM'`
+             * - `'AES-KW'`
+             * @param format Must be one of `'raw'`, `'pkcs8'`, `'spki'`, or `'jwk'`.
+             * @param keyUsages See {@link https://nodejs.org/docs/latest/api/webcrypto.html#cryptokeyusages Key usages}.
+             * @since v15.0.0
+             */
+            unwrapKey(
+                format: KeyFormat,
+                wrappedKey: BufferSource,
+                unwrappingKey: CryptoKey,
+                unwrapAlgorithm: AlgorithmIdentifier | RsaOaepParams | AesCtrParams | AesCbcParams | AesGcmParams,
+                unwrappedKeyAlgorithm: AlgorithmIdentifier | RsaHashedImportParams | EcKeyImportParams | HmacImportParams | AesKeyAlgorithm,
+                extractable: boolean,
+                keyUsages: KeyUsage[]
+            ): Promise<CryptoKey>;
+            /**
+             * Using the method and parameters given in `algorithm` and the keying material provided by `key`,
+             * `subtle.verify()` attempts to verify that `signature` is a valid cryptographic signature of `data`.
+             * The returned promise is resolved with either `true` or `false`.
+             *
+             * The algorithms currently supported include:
+             *
+             * - `'RSASSA-PKCS1-v1_5'`
+             * - `'RSA-PSS'`
+             * - `'ECDSA'`
+             * - `'Ed25519'`
+             * - `'Ed448'`
+             * - `'HMAC'`
+             * @since v15.0.0
+             */
+            verify(algorithm: AlgorithmIdentifier | RsaPssParams | EcdsaParams | Ed448Params, key: CryptoKey, signature: BufferSource, data: BufferSource): Promise<boolean>;
+            /**
+             * In cryptography, "wrapping a key" refers to exporting and then encrypting the keying material.
+             * The `subtle.wrapKey()` method exports the keying material into the format identified by `format`,
+             * then encrypts it using the method and parameters specified by `wrapAlgo` and the keying material provided by `wrappingKey`.
+             * It is the equivalent to calling `subtle.exportKey()` using `format` and `key` as the arguments,
+             * then passing the result to the `subtle.encrypt()` method using `wrappingKey` and `wrapAlgo` as inputs.
+             * If successful, the returned promise will be resolved with an `<ArrayBuffer>` containing the encrypted key data.
+             *
+             * The wrapping algorithms currently supported include:
+             *
+             * - `'RSA-OAEP'`
+             * - `'AES-CTR'`
+             * - `'AES-CBC'`
+             * - `'AES-GCM'`
+             * - `'AES-KW'`
+             * @param format Must be one of `'raw'`, `'pkcs8'`, `'spki'`, or `'jwk'`.
+             * @since v15.0.0
+             */
+            wrapKey(format: KeyFormat, key: CryptoKey, wrappingKey: CryptoKey, wrapAlgorithm: AlgorithmIdentifier | RsaOaepParams | AesCtrParams | AesCbcParams | AesGcmParams): Promise<ArrayBuffer>;
+        }
+    }
+}
+declare module 'node:crypto' {
+    export * from 'crypto';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/dgram.d.ts b/igv_component/node_modules/@types/node/ts4.8/dgram.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..247328d28b72328bcc380fe0e482647eff3631ff
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/dgram.d.ts
@@ -0,0 +1,545 @@
+/**
+ * The `dgram` module provides an implementation of UDP datagram sockets.
+ *
+ * ```js
+ * import dgram from 'dgram';
+ *
+ * const server = dgram.createSocket('udp4');
+ *
+ * server.on('error', (err) => {
+ *   console.log(`server error:\n${err.stack}`);
+ *   server.close();
+ * });
+ *
+ * server.on('message', (msg, rinfo) => {
+ *   console.log(`server got: ${msg} from ${rinfo.address}:${rinfo.port}`);
+ * });
+ *
+ * server.on('listening', () => {
+ *   const address = server.address();
+ *   console.log(`server listening ${address.address}:${address.port}`);
+ * });
+ *
+ * server.bind(41234);
+ * // Prints: server listening 0.0.0.0:41234
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/dgram.js)
+ */
+declare module 'dgram' {
+    import { AddressInfo } from 'node:net';
+    import * as dns from 'node:dns';
+    import { EventEmitter, Abortable } from 'node:events';
+    interface RemoteInfo {
+        address: string;
+        family: 'IPv4' | 'IPv6';
+        port: number;
+        size: number;
+    }
+    interface BindOptions {
+        port?: number | undefined;
+        address?: string | undefined;
+        exclusive?: boolean | undefined;
+        fd?: number | undefined;
+    }
+    type SocketType = 'udp4' | 'udp6';
+    interface SocketOptions extends Abortable {
+        type: SocketType;
+        reuseAddr?: boolean | undefined;
+        /**
+         * @default false
+         */
+        ipv6Only?: boolean | undefined;
+        recvBufferSize?: number | undefined;
+        sendBufferSize?: number | undefined;
+        lookup?: ((hostname: string, options: dns.LookupOneOptions, callback: (err: NodeJS.ErrnoException | null, address: string, family: number) => void) => void) | undefined;
+    }
+    /**
+     * Creates a `dgram.Socket` object. Once the socket is created, calling `socket.bind()` will instruct the socket to begin listening for datagram
+     * messages. When `address` and `port` are not passed to `socket.bind()` the
+     * method will bind the socket to the "all interfaces" address on a random port
+     * (it does the right thing for both `udp4` and `udp6` sockets). The bound address
+     * and port can be retrieved using `socket.address().address` and `socket.address().port`.
+     *
+     * If the `signal` option is enabled, calling `.abort()` on the corresponding`AbortController` is similar to calling `.close()` on the socket:
+     *
+     * ```js
+     * const controller = new AbortController();
+     * const { signal } = controller;
+     * const server = dgram.createSocket({ type: 'udp4', signal });
+     * server.on('message', (msg, rinfo) => {
+     *   console.log(`server got: ${msg} from ${rinfo.address}:${rinfo.port}`);
+     * });
+     * // Later, when you want to close the server.
+     * controller.abort();
+     * ```
+     * @since v0.11.13
+     * @param options Available options are:
+     * @param callback Attached as a listener for `'message'` events. Optional.
+     */
+    function createSocket(type: SocketType, callback?: (msg: Buffer, rinfo: RemoteInfo) => void): Socket;
+    function createSocket(options: SocketOptions, callback?: (msg: Buffer, rinfo: RemoteInfo) => void): Socket;
+    /**
+     * Encapsulates the datagram functionality.
+     *
+     * New instances of `dgram.Socket` are created using {@link createSocket}.
+     * The `new` keyword is not to be used to create `dgram.Socket` instances.
+     * @since v0.1.99
+     */
+    class Socket extends EventEmitter {
+        /**
+         * Tells the kernel to join a multicast group at the given `multicastAddress` and`multicastInterface` using the `IP_ADD_MEMBERSHIP` socket option. If the`multicastInterface` argument is not
+         * specified, the operating system will choose
+         * one interface and will add membership to it. To add membership to every
+         * available interface, call `addMembership` multiple times, once per interface.
+         *
+         * When called on an unbound socket, this method will implicitly bind to a random
+         * port, listening on all interfaces.
+         *
+         * When sharing a UDP socket across multiple `cluster` workers, the`socket.addMembership()` function must be called only once or an`EADDRINUSE` error will occur:
+         *
+         * ```js
+         * import cluster from 'cluster';
+         * import dgram from 'dgram';
+         *
+         * if (cluster.isPrimary) {
+         *   cluster.fork(); // Works ok.
+         *   cluster.fork(); // Fails with EADDRINUSE.
+         * } else {
+         *   const s = dgram.createSocket('udp4');
+         *   s.bind(1234, () => {
+         *     s.addMembership('224.0.0.114');
+         *   });
+         * }
+         * ```
+         * @since v0.6.9
+         */
+        addMembership(multicastAddress: string, multicastInterface?: string): void;
+        /**
+         * Returns an object containing the address information for a socket.
+         * For UDP sockets, this object will contain `address`, `family` and `port`properties.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         * @since v0.1.99
+         */
+        address(): AddressInfo;
+        /**
+         * For UDP sockets, causes the `dgram.Socket` to listen for datagram
+         * messages on a named `port` and optional `address`. If `port` is not
+         * specified or is `0`, the operating system will attempt to bind to a
+         * random port. If `address` is not specified, the operating system will
+         * attempt to listen on all addresses. Once binding is complete, a`'listening'` event is emitted and the optional `callback` function is
+         * called.
+         *
+         * Specifying both a `'listening'` event listener and passing a`callback` to the `socket.bind()` method is not harmful but not very
+         * useful.
+         *
+         * A bound datagram socket keeps the Node.js process running to receive
+         * datagram messages.
+         *
+         * If binding fails, an `'error'` event is generated. In rare case (e.g.
+         * attempting to bind with a closed socket), an `Error` may be thrown.
+         *
+         * Example of a UDP server listening on port 41234:
+         *
+         * ```js
+         * import dgram from 'dgram';
+         *
+         * const server = dgram.createSocket('udp4');
+         *
+         * server.on('error', (err) => {
+         *   console.log(`server error:\n${err.stack}`);
+         *   server.close();
+         * });
+         *
+         * server.on('message', (msg, rinfo) => {
+         *   console.log(`server got: ${msg} from ${rinfo.address}:${rinfo.port}`);
+         * });
+         *
+         * server.on('listening', () => {
+         *   const address = server.address();
+         *   console.log(`server listening ${address.address}:${address.port}`);
+         * });
+         *
+         * server.bind(41234);
+         * // Prints: server listening 0.0.0.0:41234
+         * ```
+         * @since v0.1.99
+         * @param callback with no parameters. Called when binding is complete.
+         */
+        bind(port?: number, address?: string, callback?: () => void): this;
+        bind(port?: number, callback?: () => void): this;
+        bind(callback?: () => void): this;
+        bind(options: BindOptions, callback?: () => void): this;
+        /**
+         * Close the underlying socket and stop listening for data on it. If a callback is
+         * provided, it is added as a listener for the `'close'` event.
+         * @since v0.1.99
+         * @param callback Called when the socket has been closed.
+         */
+        close(callback?: () => void): this;
+        /**
+         * Associates the `dgram.Socket` to a remote address and port. Every
+         * message sent by this handle is automatically sent to that destination. Also,
+         * the socket will only receive messages from that remote peer.
+         * Trying to call `connect()` on an already connected socket will result
+         * in an `ERR_SOCKET_DGRAM_IS_CONNECTED` exception. If `address` is not
+         * provided, `'127.0.0.1'` (for `udp4` sockets) or `'::1'` (for `udp6` sockets)
+         * will be used by default. Once the connection is complete, a `'connect'` event
+         * is emitted and the optional `callback` function is called. In case of failure,
+         * the `callback` is called or, failing this, an `'error'` event is emitted.
+         * @since v12.0.0
+         * @param callback Called when the connection is completed or on error.
+         */
+        connect(port: number, address?: string, callback?: () => void): void;
+        connect(port: number, callback: () => void): void;
+        /**
+         * A synchronous function that disassociates a connected `dgram.Socket` from
+         * its remote address. Trying to call `disconnect()` on an unbound or already
+         * disconnected socket will result in an `ERR_SOCKET_DGRAM_NOT_CONNECTED` exception.
+         * @since v12.0.0
+         */
+        disconnect(): void;
+        /**
+         * Instructs the kernel to leave a multicast group at `multicastAddress` using the`IP_DROP_MEMBERSHIP` socket option. This method is automatically called by the
+         * kernel when the socket is closed or the process terminates, so most apps will
+         * never have reason to call this.
+         *
+         * If `multicastInterface` is not specified, the operating system will attempt to
+         * drop membership on all valid interfaces.
+         * @since v0.6.9
+         */
+        dropMembership(multicastAddress: string, multicastInterface?: string): void;
+        /**
+         * This method throws `ERR_SOCKET_BUFFER_SIZE` if called on an unbound socket.
+         * @since v8.7.0
+         * @return the `SO_RCVBUF` socket receive buffer size in bytes.
+         */
+        getRecvBufferSize(): number;
+        /**
+         * This method throws `ERR_SOCKET_BUFFER_SIZE` if called on an unbound socket.
+         * @since v8.7.0
+         * @return the `SO_SNDBUF` socket send buffer size in bytes.
+         */
+        getSendBufferSize(): number;
+        /**
+         * By default, binding a socket will cause it to block the Node.js process from
+         * exiting as long as the socket is open. The `socket.unref()` method can be used
+         * to exclude the socket from the reference counting that keeps the Node.js
+         * process active. The `socket.ref()` method adds the socket back to the reference
+         * counting and restores the default behavior.
+         *
+         * Calling `socket.ref()` multiples times will have no additional effect.
+         *
+         * The `socket.ref()` method returns a reference to the socket so calls can be
+         * chained.
+         * @since v0.9.1
+         */
+        ref(): this;
+        /**
+         * Returns an object containing the `address`, `family`, and `port` of the remote
+         * endpoint. This method throws an `ERR_SOCKET_DGRAM_NOT_CONNECTED` exception
+         * if the socket is not connected.
+         * @since v12.0.0
+         */
+        remoteAddress(): AddressInfo;
+        /**
+         * Broadcasts a datagram on the socket.
+         * For connectionless sockets, the destination `port` and `address` must be
+         * specified. Connected sockets, on the other hand, will use their associated
+         * remote endpoint, so the `port` and `address` arguments must not be set.
+         *
+         * The `msg` argument contains the message to be sent.
+         * Depending on its type, different behavior can apply. If `msg` is a `Buffer`,
+         * any `TypedArray` or a `DataView`,
+         * the `offset` and `length` specify the offset within the `Buffer` where the
+         * message begins and the number of bytes in the message, respectively.
+         * If `msg` is a `String`, then it is automatically converted to a `Buffer`with `'utf8'` encoding. With messages that
+         * contain multi-byte characters, `offset` and `length` will be calculated with
+         * respect to `byte length` and not the character position.
+         * If `msg` is an array, `offset` and `length` must not be specified.
+         *
+         * The `address` argument is a string. If the value of `address` is a host name,
+         * DNS will be used to resolve the address of the host. If `address` is not
+         * provided or otherwise nullish, `'127.0.0.1'` (for `udp4` sockets) or `'::1'`(for `udp6` sockets) will be used by default.
+         *
+         * If the socket has not been previously bound with a call to `bind`, the socket
+         * is assigned a random port number and is bound to the "all interfaces" address
+         * (`'0.0.0.0'` for `udp4` sockets, `'::0'` for `udp6` sockets.)
+         *
+         * An optional `callback` function may be specified to as a way of reporting
+         * DNS errors or for determining when it is safe to reuse the `buf` object.
+         * DNS lookups delay the time to send for at least one tick of the
+         * Node.js event loop.
+         *
+         * The only way to know for sure that the datagram has been sent is by using a`callback`. If an error occurs and a `callback` is given, the error will be
+         * passed as the first argument to the `callback`. If a `callback` is not given,
+         * the error is emitted as an `'error'` event on the `socket` object.
+         *
+         * Offset and length are optional but both _must_ be set if either are used.
+         * They are supported only when the first argument is a `Buffer`, a `TypedArray`,
+         * or a `DataView`.
+         *
+         * This method throws `ERR_SOCKET_BAD_PORT` if called on an unbound socket.
+         *
+         * Example of sending a UDP packet to a port on `localhost`;
+         *
+         * ```js
+         * import dgram from 'dgram';
+         * import { Buffer } from 'buffer';
+         *
+         * const message = Buffer.from('Some bytes');
+         * const client = dgram.createSocket('udp4');
+         * client.send(message, 41234, 'localhost', (err) => {
+         *   client.close();
+         * });
+         * ```
+         *
+         * Example of sending a UDP packet composed of multiple buffers to a port on`127.0.0.1`;
+         *
+         * ```js
+         * import dgram from 'dgram';
+         * import { Buffer } from 'buffer';
+         *
+         * const buf1 = Buffer.from('Some ');
+         * const buf2 = Buffer.from('bytes');
+         * const client = dgram.createSocket('udp4');
+         * client.send([buf1, buf2], 41234, (err) => {
+         *   client.close();
+         * });
+         * ```
+         *
+         * Sending multiple buffers might be faster or slower depending on the
+         * application and operating system. Run benchmarks to
+         * determine the optimal strategy on a case-by-case basis. Generally speaking,
+         * however, sending multiple buffers is faster.
+         *
+         * Example of sending a UDP packet using a socket connected to a port on`localhost`:
+         *
+         * ```js
+         * import dgram from 'dgram';
+         * import { Buffer } from 'buffer';
+         *
+         * const message = Buffer.from('Some bytes');
+         * const client = dgram.createSocket('udp4');
+         * client.connect(41234, 'localhost', (err) => {
+         *   client.send(message, (err) => {
+         *     client.close();
+         *   });
+         * });
+         * ```
+         * @since v0.1.99
+         * @param msg Message to be sent.
+         * @param offset Offset in the buffer where the message starts.
+         * @param length Number of bytes in the message.
+         * @param port Destination port.
+         * @param address Destination host name or IP address.
+         * @param callback Called when the message has been sent.
+         */
+        send(msg: string | Uint8Array | ReadonlyArray<any>, port?: number, address?: string, callback?: (error: Error | null, bytes: number) => void): void;
+        send(msg: string | Uint8Array | ReadonlyArray<any>, port?: number, callback?: (error: Error | null, bytes: number) => void): void;
+        send(msg: string | Uint8Array | ReadonlyArray<any>, callback?: (error: Error | null, bytes: number) => void): void;
+        send(msg: string | Uint8Array, offset: number, length: number, port?: number, address?: string, callback?: (error: Error | null, bytes: number) => void): void;
+        send(msg: string | Uint8Array, offset: number, length: number, port?: number, callback?: (error: Error | null, bytes: number) => void): void;
+        send(msg: string | Uint8Array, offset: number, length: number, callback?: (error: Error | null, bytes: number) => void): void;
+        /**
+         * Sets or clears the `SO_BROADCAST` socket option. When set to `true`, UDP
+         * packets may be sent to a local interface's broadcast address.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         * @since v0.6.9
+         */
+        setBroadcast(flag: boolean): void;
+        /**
+         * _All references to scope in this section are referring to [IPv6 Zone Indices](https://en.wikipedia.org/wiki/IPv6_address#Scoped_literal_IPv6_addresses), which are defined by [RFC
+         * 4007](https://tools.ietf.org/html/rfc4007). In string form, an IP_
+         * _with a scope index is written as `'IP%scope'` where scope is an interface name_
+         * _or interface number._
+         *
+         * Sets the default outgoing multicast interface of the socket to a chosen
+         * interface or back to system interface selection. The `multicastInterface` must
+         * be a valid string representation of an IP from the socket's family.
+         *
+         * For IPv4 sockets, this should be the IP configured for the desired physical
+         * interface. All packets sent to multicast on the socket will be sent on the
+         * interface determined by the most recent successful use of this call.
+         *
+         * For IPv6 sockets, `multicastInterface` should include a scope to indicate the
+         * interface as in the examples that follow. In IPv6, individual `send` calls can
+         * also use explicit scope in addresses, so only packets sent to a multicast
+         * address without specifying an explicit scope are affected by the most recent
+         * successful use of this call.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         *
+         * #### Example: IPv6 outgoing multicast interface
+         *
+         * On most systems, where scope format uses the interface name:
+         *
+         * ```js
+         * const socket = dgram.createSocket('udp6');
+         *
+         * socket.bind(1234, () => {
+         *   socket.setMulticastInterface('::%eth1');
+         * });
+         * ```
+         *
+         * On Windows, where scope format uses an interface number:
+         *
+         * ```js
+         * const socket = dgram.createSocket('udp6');
+         *
+         * socket.bind(1234, () => {
+         *   socket.setMulticastInterface('::%2');
+         * });
+         * ```
+         *
+         * #### Example: IPv4 outgoing multicast interface
+         *
+         * All systems use an IP of the host on the desired physical interface:
+         *
+         * ```js
+         * const socket = dgram.createSocket('udp4');
+         *
+         * socket.bind(1234, () => {
+         *   socket.setMulticastInterface('10.0.0.2');
+         * });
+         * ```
+         * @since v8.6.0
+         */
+        setMulticastInterface(multicastInterface: string): void;
+        /**
+         * Sets or clears the `IP_MULTICAST_LOOP` socket option. When set to `true`,
+         * multicast packets will also be received on the local interface.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         * @since v0.3.8
+         */
+        setMulticastLoopback(flag: boolean): boolean;
+        /**
+         * Sets the `IP_MULTICAST_TTL` socket option. While TTL generally stands for
+         * "Time to Live", in this context it specifies the number of IP hops that a
+         * packet is allowed to travel through, specifically for multicast traffic. Each
+         * router or gateway that forwards a packet decrements the TTL. If the TTL is
+         * decremented to 0 by a router, it will not be forwarded.
+         *
+         * The `ttl` argument may be between 0 and 255\. The default on most systems is `1`.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         * @since v0.3.8
+         */
+        setMulticastTTL(ttl: number): number;
+        /**
+         * Sets the `SO_RCVBUF` socket option. Sets the maximum socket receive buffer
+         * in bytes.
+         *
+         * This method throws `ERR_SOCKET_BUFFER_SIZE` if called on an unbound socket.
+         * @since v8.7.0
+         */
+        setRecvBufferSize(size: number): void;
+        /**
+         * Sets the `SO_SNDBUF` socket option. Sets the maximum socket send buffer
+         * in bytes.
+         *
+         * This method throws `ERR_SOCKET_BUFFER_SIZE` if called on an unbound socket.
+         * @since v8.7.0
+         */
+        setSendBufferSize(size: number): void;
+        /**
+         * Sets the `IP_TTL` socket option. While TTL generally stands for "Time to Live",
+         * in this context it specifies the number of IP hops that a packet is allowed to
+         * travel through. Each router or gateway that forwards a packet decrements the
+         * TTL. If the TTL is decremented to 0 by a router, it will not be forwarded.
+         * Changing TTL values is typically done for network probes or when multicasting.
+         *
+         * The `ttl` argument may be between 1 and 255\. The default on most systems
+         * is 64.
+         *
+         * This method throws `EBADF` if called on an unbound socket.
+         * @since v0.1.101
+         */
+        setTTL(ttl: number): number;
+        /**
+         * By default, binding a socket will cause it to block the Node.js process from
+         * exiting as long as the socket is open. The `socket.unref()` method can be used
+         * to exclude the socket from the reference counting that keeps the Node.js
+         * process active, allowing the process to exit even if the socket is still
+         * listening.
+         *
+         * Calling `socket.unref()` multiple times will have no addition effect.
+         *
+         * The `socket.unref()` method returns a reference to the socket so calls can be
+         * chained.
+         * @since v0.9.1
+         */
+        unref(): this;
+        /**
+         * Tells the kernel to join a source-specific multicast channel at the given`sourceAddress` and `groupAddress`, using the `multicastInterface` with the`IP_ADD_SOURCE_MEMBERSHIP` socket
+         * option. If the `multicastInterface` argument
+         * is not specified, the operating system will choose one interface and will add
+         * membership to it. To add membership to every available interface, call`socket.addSourceSpecificMembership()` multiple times, once per interface.
+         *
+         * When called on an unbound socket, this method will implicitly bind to a random
+         * port, listening on all interfaces.
+         * @since v13.1.0, v12.16.0
+         */
+        addSourceSpecificMembership(sourceAddress: string, groupAddress: string, multicastInterface?: string): void;
+        /**
+         * Instructs the kernel to leave a source-specific multicast channel at the given`sourceAddress` and `groupAddress` using the `IP_DROP_SOURCE_MEMBERSHIP`socket option. This method is
+         * automatically called by the kernel when the
+         * socket is closed or the process terminates, so most apps will never have
+         * reason to call this.
+         *
+         * If `multicastInterface` is not specified, the operating system will attempt to
+         * drop membership on all valid interfaces.
+         * @since v13.1.0, v12.16.0
+         */
+        dropSourceSpecificMembership(sourceAddress: string, groupAddress: string, multicastInterface?: string): void;
+        /**
+         * events.EventEmitter
+         * 1. close
+         * 2. connect
+         * 3. error
+         * 4. listening
+         * 5. message
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'connect', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'listening', listener: () => void): this;
+        addListener(event: 'message', listener: (msg: Buffer, rinfo: RemoteInfo) => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'connect'): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'listening'): boolean;
+        emit(event: 'message', msg: Buffer, rinfo: RemoteInfo): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'connect', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'listening', listener: () => void): this;
+        on(event: 'message', listener: (msg: Buffer, rinfo: RemoteInfo) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'connect', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'listening', listener: () => void): this;
+        once(event: 'message', listener: (msg: Buffer, rinfo: RemoteInfo) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'connect', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'listening', listener: () => void): this;
+        prependListener(event: 'message', listener: (msg: Buffer, rinfo: RemoteInfo) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'connect', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'listening', listener: () => void): this;
+        prependOnceListener(event: 'message', listener: (msg: Buffer, rinfo: RemoteInfo) => void): this;
+    }
+}
+declare module 'node:dgram' {
+    export * from 'dgram';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/diagnostics_channel.d.ts b/igv_component/node_modules/@types/node/ts4.8/diagnostics_channel.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a87ba8ca9f59da1e13b202ec277281254d4483e0
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/diagnostics_channel.d.ts
@@ -0,0 +1,153 @@
+/**
+ * The `diagnostics_channel` module provides an API to create named channels
+ * to report arbitrary message data for diagnostics purposes.
+ *
+ * It can be accessed using:
+ *
+ * ```js
+ * import diagnostics_channel from 'diagnostics_channel';
+ * ```
+ *
+ * It is intended that a module writer wanting to report diagnostics messages
+ * will create one or many top-level channels to report messages through.
+ * Channels may also be acquired at runtime but it is not encouraged
+ * due to the additional overhead of doing so. Channels may be exported for
+ * convenience, but as long as the name is known it can be acquired anywhere.
+ *
+ * If you intend for your module to produce diagnostics data for others to
+ * consume it is recommended that you include documentation of what named
+ * channels are used along with the shape of the message data. Channel names
+ * should generally include the module name to avoid collisions with data from
+ * other modules.
+ * @experimental
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/diagnostics_channel.js)
+ */
+declare module 'diagnostics_channel' {
+    /**
+     * Check if there are active subscribers to the named channel. This is helpful if
+     * the message you want to send might be expensive to prepare.
+     *
+     * This API is optional but helpful when trying to publish messages from very
+     * performance-sensitive code.
+     *
+     * ```js
+     * import diagnostics_channel from 'diagnostics_channel';
+     *
+     * if (diagnostics_channel.hasSubscribers('my-channel')) {
+     *   // There are subscribers, prepare and publish message
+     * }
+     * ```
+     * @since v15.1.0, v14.17.0
+     * @param name The channel name
+     * @return If there are active subscribers
+     */
+    function hasSubscribers(name: string): boolean;
+    /**
+     * This is the primary entry-point for anyone wanting to interact with a named
+     * channel. It produces a channel object which is optimized to reduce overhead at
+     * publish time as much as possible.
+     *
+     * ```js
+     * import diagnostics_channel from 'diagnostics_channel';
+     *
+     * const channel = diagnostics_channel.channel('my-channel');
+     * ```
+     * @since v15.1.0, v14.17.0
+     * @param name The channel name
+     * @return The named channel object
+     */
+    function channel(name: string): Channel;
+    type ChannelListener = (message: unknown, name: string) => void;
+    /**
+     * The class `Channel` represents an individual named channel within the data
+     * pipeline. It is use to track subscribers and to publish messages when there
+     * are subscribers present. It exists as a separate object to avoid channel
+     * lookups at publish time, enabling very fast publish speeds and allowing
+     * for heavy use while incurring very minimal cost. Channels are created with {@link channel}, constructing a channel directly
+     * with `new Channel(name)` is not supported.
+     * @since v15.1.0, v14.17.0
+     */
+    class Channel {
+        readonly name: string;
+        /**
+         * Check if there are active subscribers to this channel. This is helpful if
+         * the message you want to send might be expensive to prepare.
+         *
+         * This API is optional but helpful when trying to publish messages from very
+         * performance-sensitive code.
+         *
+         * ```js
+         * import diagnostics_channel from 'diagnostics_channel';
+         *
+         * const channel = diagnostics_channel.channel('my-channel');
+         *
+         * if (channel.hasSubscribers) {
+         *   // There are subscribers, prepare and publish message
+         * }
+         * ```
+         * @since v15.1.0, v14.17.0
+         */
+        readonly hasSubscribers: boolean;
+        private constructor(name: string);
+        /**
+         * Publish a message to any subscribers to the channel. This will
+         * trigger message handlers synchronously so they will execute within
+         * the same context.
+         *
+         * ```js
+         * import diagnostics_channel from 'diagnostics_channel';
+         *
+         * const channel = diagnostics_channel.channel('my-channel');
+         *
+         * channel.publish({
+         *   some: 'message'
+         * });
+         * ```
+         * @since v15.1.0, v14.17.0
+         * @param message The message to send to the channel subscribers
+         */
+        publish(message: unknown): void;
+        /**
+         * Register a message handler to subscribe to this channel. This message handler
+         * will be run synchronously whenever a message is published to the channel. Any
+         * errors thrown in the message handler will trigger an `'uncaughtException'`.
+         *
+         * ```js
+         * import diagnostics_channel from 'diagnostics_channel';
+         *
+         * const channel = diagnostics_channel.channel('my-channel');
+         *
+         * channel.subscribe((message, name) => {
+         *   // Received data
+         * });
+         * ```
+         * @since v15.1.0, v14.17.0
+         * @param onMessage The handler to receive channel messages
+         */
+        subscribe(onMessage: ChannelListener): void;
+        /**
+         * Remove a message handler previously registered to this channel with `channel.subscribe(onMessage)`.
+         *
+         * ```js
+         * import diagnostics_channel from 'diagnostics_channel';
+         *
+         * const channel = diagnostics_channel.channel('my-channel');
+         *
+         * function onMessage(message, name) {
+         *   // Received data
+         * }
+         *
+         * channel.subscribe(onMessage);
+         *
+         * channel.unsubscribe(onMessage);
+         * ```
+         * @since v15.1.0, v14.17.0
+         * @param onMessage The previous subscribed handler to remove
+         * @return `true` if the handler was found, `false` otherwise.
+         */
+        unsubscribe(onMessage: ChannelListener): void;
+    }
+}
+declare module 'node:diagnostics_channel' {
+    export * from 'diagnostics_channel';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/dns.d.ts b/igv_component/node_modules/@types/node/ts4.8/dns.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..305367b81d17a30d1a914cda62fdaf25acf3567e
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/dns.d.ts
@@ -0,0 +1,659 @@
+/**
+ * The `dns` module enables name resolution. For example, use it to look up IP
+ * addresses of host names.
+ *
+ * Although named for the [Domain Name System (DNS)](https://en.wikipedia.org/wiki/Domain_Name_System), it does not always use the
+ * DNS protocol for lookups. {@link lookup} uses the operating system
+ * facilities to perform name resolution. It may not need to perform any network
+ * communication. To perform name resolution the way other applications on the same
+ * system do, use {@link lookup}.
+ *
+ * ```js
+ * const dns = require('dns');
+ *
+ * dns.lookup('example.org', (err, address, family) => {
+ *   console.log('address: %j family: IPv%s', address, family);
+ * });
+ * // address: "93.184.216.34" family: IPv4
+ * ```
+ *
+ * All other functions in the `dns` module connect to an actual DNS server to
+ * perform name resolution. They will always use the network to perform DNS
+ * queries. These functions do not use the same set of configuration files used by {@link lookup} (e.g. `/etc/hosts`). Use these functions to always perform
+ * DNS queries, bypassing other name-resolution facilities.
+ *
+ * ```js
+ * const dns = require('dns');
+ *
+ * dns.resolve4('archive.org', (err, addresses) => {
+ *   if (err) throw err;
+ *
+ *   console.log(`addresses: ${JSON.stringify(addresses)}`);
+ *
+ *   addresses.forEach((a) => {
+ *     dns.reverse(a, (err, hostnames) => {
+ *       if (err) {
+ *         throw err;
+ *       }
+ *       console.log(`reverse for ${a}: ${JSON.stringify(hostnames)}`);
+ *     });
+ *   });
+ * });
+ * ```
+ *
+ * See the `Implementation considerations section` for more information.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/dns.js)
+ */
+declare module 'dns' {
+    import * as dnsPromises from 'node:dns/promises';
+    // Supported getaddrinfo flags.
+    export const ADDRCONFIG: number;
+    export const V4MAPPED: number;
+    /**
+     * If `dns.V4MAPPED` is specified, return resolved IPv6 addresses as
+     * well as IPv4 mapped IPv6 addresses.
+     */
+    export const ALL: number;
+    export interface LookupOptions {
+        family?: number | undefined;
+        hints?: number | undefined;
+        all?: boolean | undefined;
+        /**
+         * @default true
+         */
+        verbatim?: boolean | undefined;
+    }
+    export interface LookupOneOptions extends LookupOptions {
+        all?: false | undefined;
+    }
+    export interface LookupAllOptions extends LookupOptions {
+        all: true;
+    }
+    export interface LookupAddress {
+        address: string;
+        family: number;
+    }
+    /**
+     * Resolves a host name (e.g. `'nodejs.org'`) into the first found A (IPv4) or
+     * AAAA (IPv6) record. All `option` properties are optional. If `options` is an
+     * integer, then it must be `4` or `6` – if `options` is not provided, then IPv4
+     * and IPv6 addresses are both returned if found.
+     *
+     * With the `all` option set to `true`, the arguments for `callback` change to`(err, addresses)`, with `addresses` being an array of objects with the
+     * properties `address` and `family`.
+     *
+     * On error, `err` is an `Error` object, where `err.code` is the error code.
+     * Keep in mind that `err.code` will be set to `'ENOTFOUND'` not only when
+     * the host name does not exist but also when the lookup fails in other ways
+     * such as no available file descriptors.
+     *
+     * `dns.lookup()` does not necessarily have anything to do with the DNS protocol.
+     * The implementation uses an operating system facility that can associate names
+     * with addresses, and vice versa. This implementation can have subtle but
+     * important consequences on the behavior of any Node.js program. Please take some
+     * time to consult the `Implementation considerations section` before using`dns.lookup()`.
+     *
+     * Example usage:
+     *
+     * ```js
+     * const dns = require('dns');
+     * const options = {
+     *   family: 6,
+     *   hints: dns.ADDRCONFIG | dns.V4MAPPED,
+     * };
+     * dns.lookup('example.com', options, (err, address, family) =>
+     *   console.log('address: %j family: IPv%s', address, family));
+     * // address: "2606:2800:220:1:248:1893:25c8:1946" family: IPv6
+     *
+     * // When options.all is true, the result will be an Array.
+     * options.all = true;
+     * dns.lookup('example.com', options, (err, addresses) =>
+     *   console.log('addresses: %j', addresses));
+     * // addresses: [{"address":"2606:2800:220:1:248:1893:25c8:1946","family":6}]
+     * ```
+     *
+     * If this method is invoked as its `util.promisify()` ed version, and `all`is not set to `true`, it returns a `Promise` for an `Object` with `address` and`family` properties.
+     * @since v0.1.90
+     */
+    export function lookup(hostname: string, family: number, callback: (err: NodeJS.ErrnoException | null, address: string, family: number) => void): void;
+    export function lookup(hostname: string, options: LookupOneOptions, callback: (err: NodeJS.ErrnoException | null, address: string, family: number) => void): void;
+    export function lookup(hostname: string, options: LookupAllOptions, callback: (err: NodeJS.ErrnoException | null, addresses: LookupAddress[]) => void): void;
+    export function lookup(hostname: string, options: LookupOptions, callback: (err: NodeJS.ErrnoException | null, address: string | LookupAddress[], family: number) => void): void;
+    export function lookup(hostname: string, callback: (err: NodeJS.ErrnoException | null, address: string, family: number) => void): void;
+    export namespace lookup {
+        function __promisify__(hostname: string, options: LookupAllOptions): Promise<LookupAddress[]>;
+        function __promisify__(hostname: string, options?: LookupOneOptions | number): Promise<LookupAddress>;
+        function __promisify__(hostname: string, options: LookupOptions): Promise<LookupAddress | LookupAddress[]>;
+    }
+    /**
+     * Resolves the given `address` and `port` into a host name and service using
+     * the operating system's underlying `getnameinfo` implementation.
+     *
+     * If `address` is not a valid IP address, a `TypeError` will be thrown.
+     * The `port` will be coerced to a number. If it is not a legal port, a `TypeError`will be thrown.
+     *
+     * On an error, `err` is an `Error` object, where `err.code` is the error code.
+     *
+     * ```js
+     * const dns = require('dns');
+     * dns.lookupService('127.0.0.1', 22, (err, hostname, service) => {
+     *   console.log(hostname, service);
+     *   // Prints: localhost ssh
+     * });
+     * ```
+     *
+     * If this method is invoked as its `util.promisify()` ed version, it returns a`Promise` for an `Object` with `hostname` and `service` properties.
+     * @since v0.11.14
+     */
+    export function lookupService(address: string, port: number, callback: (err: NodeJS.ErrnoException | null, hostname: string, service: string) => void): void;
+    export namespace lookupService {
+        function __promisify__(
+            address: string,
+            port: number
+        ): Promise<{
+            hostname: string;
+            service: string;
+        }>;
+    }
+    export interface ResolveOptions {
+        ttl: boolean;
+    }
+    export interface ResolveWithTtlOptions extends ResolveOptions {
+        ttl: true;
+    }
+    export interface RecordWithTtl {
+        address: string;
+        ttl: number;
+    }
+    /** @deprecated Use `AnyARecord` or `AnyAaaaRecord` instead. */
+    export type AnyRecordWithTtl = AnyARecord | AnyAaaaRecord;
+    export interface AnyARecord extends RecordWithTtl {
+        type: 'A';
+    }
+    export interface AnyAaaaRecord extends RecordWithTtl {
+        type: 'AAAA';
+    }
+    export interface CaaRecord {
+        critial: number;
+        issue?: string | undefined;
+        issuewild?: string | undefined;
+        iodef?: string | undefined;
+        contactemail?: string | undefined;
+        contactphone?: string | undefined;
+    }
+    export interface MxRecord {
+        priority: number;
+        exchange: string;
+    }
+    export interface AnyMxRecord extends MxRecord {
+        type: 'MX';
+    }
+    export interface NaptrRecord {
+        flags: string;
+        service: string;
+        regexp: string;
+        replacement: string;
+        order: number;
+        preference: number;
+    }
+    export interface AnyNaptrRecord extends NaptrRecord {
+        type: 'NAPTR';
+    }
+    export interface SoaRecord {
+        nsname: string;
+        hostmaster: string;
+        serial: number;
+        refresh: number;
+        retry: number;
+        expire: number;
+        minttl: number;
+    }
+    export interface AnySoaRecord extends SoaRecord {
+        type: 'SOA';
+    }
+    export interface SrvRecord {
+        priority: number;
+        weight: number;
+        port: number;
+        name: string;
+    }
+    export interface AnySrvRecord extends SrvRecord {
+        type: 'SRV';
+    }
+    export interface AnyTxtRecord {
+        type: 'TXT';
+        entries: string[];
+    }
+    export interface AnyNsRecord {
+        type: 'NS';
+        value: string;
+    }
+    export interface AnyPtrRecord {
+        type: 'PTR';
+        value: string;
+    }
+    export interface AnyCnameRecord {
+        type: 'CNAME';
+        value: string;
+    }
+    export type AnyRecord = AnyARecord | AnyAaaaRecord | AnyCnameRecord | AnyMxRecord | AnyNaptrRecord | AnyNsRecord | AnyPtrRecord | AnySoaRecord | AnySrvRecord | AnyTxtRecord;
+    /**
+     * Uses the DNS protocol to resolve a host name (e.g. `'nodejs.org'`) into an array
+     * of the resource records. The `callback` function has arguments`(err, records)`. When successful, `records` will be an array of resource
+     * records. The type and structure of individual results varies based on `rrtype`:
+     *
+     * <omitted>
+     *
+     * On error, `err` is an `Error` object, where `err.code` is one of the `DNS error codes`.
+     * @since v0.1.27
+     * @param hostname Host name to resolve.
+     * @param [rrtype='A'] Resource record type.
+     */
+    export function resolve(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'A', callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'AAAA', callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'ANY', callback: (err: NodeJS.ErrnoException | null, addresses: AnyRecord[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'CNAME', callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'MX', callback: (err: NodeJS.ErrnoException | null, addresses: MxRecord[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'NAPTR', callback: (err: NodeJS.ErrnoException | null, addresses: NaptrRecord[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'NS', callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'PTR', callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'SOA', callback: (err: NodeJS.ErrnoException | null, addresses: SoaRecord) => void): void;
+    export function resolve(hostname: string, rrtype: 'SRV', callback: (err: NodeJS.ErrnoException | null, addresses: SrvRecord[]) => void): void;
+    export function resolve(hostname: string, rrtype: 'TXT', callback: (err: NodeJS.ErrnoException | null, addresses: string[][]) => void): void;
+    export function resolve(
+        hostname: string,
+        rrtype: string,
+        callback: (err: NodeJS.ErrnoException | null, addresses: string[] | MxRecord[] | NaptrRecord[] | SoaRecord | SrvRecord[] | string[][] | AnyRecord[]) => void
+    ): void;
+    export namespace resolve {
+        function __promisify__(hostname: string, rrtype?: 'A' | 'AAAA' | 'CNAME' | 'NS' | 'PTR'): Promise<string[]>;
+        function __promisify__(hostname: string, rrtype: 'ANY'): Promise<AnyRecord[]>;
+        function __promisify__(hostname: string, rrtype: 'MX'): Promise<MxRecord[]>;
+        function __promisify__(hostname: string, rrtype: 'NAPTR'): Promise<NaptrRecord[]>;
+        function __promisify__(hostname: string, rrtype: 'SOA'): Promise<SoaRecord>;
+        function __promisify__(hostname: string, rrtype: 'SRV'): Promise<SrvRecord[]>;
+        function __promisify__(hostname: string, rrtype: 'TXT'): Promise<string[][]>;
+        function __promisify__(hostname: string, rrtype: string): Promise<string[] | MxRecord[] | NaptrRecord[] | SoaRecord | SrvRecord[] | string[][] | AnyRecord[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve a IPv4 addresses (`A` records) for the`hostname`. The `addresses` argument passed to the `callback` function
+     * will contain an array of IPv4 addresses (e.g.`['74.125.79.104', '74.125.79.105', '74.125.79.106']`).
+     * @since v0.1.16
+     * @param hostname Host name to resolve.
+     */
+    export function resolve4(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve4(hostname: string, options: ResolveWithTtlOptions, callback: (err: NodeJS.ErrnoException | null, addresses: RecordWithTtl[]) => void): void;
+    export function resolve4(hostname: string, options: ResolveOptions, callback: (err: NodeJS.ErrnoException | null, addresses: string[] | RecordWithTtl[]) => void): void;
+    export namespace resolve4 {
+        function __promisify__(hostname: string): Promise<string[]>;
+        function __promisify__(hostname: string, options: ResolveWithTtlOptions): Promise<RecordWithTtl[]>;
+        function __promisify__(hostname: string, options?: ResolveOptions): Promise<string[] | RecordWithTtl[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve a IPv6 addresses (`AAAA` records) for the`hostname`. The `addresses` argument passed to the `callback` function
+     * will contain an array of IPv6 addresses.
+     * @since v0.1.16
+     * @param hostname Host name to resolve.
+     */
+    export function resolve6(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export function resolve6(hostname: string, options: ResolveWithTtlOptions, callback: (err: NodeJS.ErrnoException | null, addresses: RecordWithTtl[]) => void): void;
+    export function resolve6(hostname: string, options: ResolveOptions, callback: (err: NodeJS.ErrnoException | null, addresses: string[] | RecordWithTtl[]) => void): void;
+    export namespace resolve6 {
+        function __promisify__(hostname: string): Promise<string[]>;
+        function __promisify__(hostname: string, options: ResolveWithTtlOptions): Promise<RecordWithTtl[]>;
+        function __promisify__(hostname: string, options?: ResolveOptions): Promise<string[] | RecordWithTtl[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve `CNAME` records for the `hostname`. The`addresses` argument passed to the `callback` function
+     * will contain an array of canonical name records available for the `hostname`(e.g. `['bar.example.com']`).
+     * @since v0.3.2
+     */
+    export function resolveCname(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export namespace resolveCname {
+        function __promisify__(hostname: string): Promise<string[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve `CAA` records for the `hostname`. The`addresses` argument passed to the `callback` function
+     * will contain an array of certification authority authorization records
+     * available for the `hostname` (e.g. `[{critical: 0, iodef: 'mailto:pki@example.com'}, {critical: 128, issue: 'pki.example.com'}]`).
+     * @since v15.0.0, v14.17.0
+     */
+    export function resolveCaa(hostname: string, callback: (err: NodeJS.ErrnoException | null, records: CaaRecord[]) => void): void;
+    export namespace resolveCaa {
+        function __promisify__(hostname: string): Promise<CaaRecord[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve mail exchange records (`MX` records) for the`hostname`. The `addresses` argument passed to the `callback` function will
+     * contain an array of objects containing both a `priority` and `exchange`property (e.g. `[{priority: 10, exchange: 'mx.example.com'}, ...]`).
+     * @since v0.1.27
+     */
+    export function resolveMx(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: MxRecord[]) => void): void;
+    export namespace resolveMx {
+        function __promisify__(hostname: string): Promise<MxRecord[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve regular expression based records (`NAPTR`records) for the `hostname`. The `addresses` argument passed to the `callback`function will contain an array of
+     * objects with the following properties:
+     *
+     * * `flags`
+     * * `service`
+     * * `regexp`
+     * * `replacement`
+     * * `order`
+     * * `preference`
+     *
+     * ```js
+     * {
+     *   flags: 's',
+     *   service: 'SIP+D2U',
+     *   regexp: '',
+     *   replacement: '_sip._udp.example.com',
+     *   order: 30,
+     *   preference: 100
+     * }
+     * ```
+     * @since v0.9.12
+     */
+    export function resolveNaptr(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: NaptrRecord[]) => void): void;
+    export namespace resolveNaptr {
+        function __promisify__(hostname: string): Promise<NaptrRecord[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve name server records (`NS` records) for the`hostname`. The `addresses` argument passed to the `callback` function will
+     * contain an array of name server records available for `hostname`(e.g. `['ns1.example.com', 'ns2.example.com']`).
+     * @since v0.1.90
+     */
+    export function resolveNs(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export namespace resolveNs {
+        function __promisify__(hostname: string): Promise<string[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve pointer records (`PTR` records) for the`hostname`. The `addresses` argument passed to the `callback` function will
+     * be an array of strings containing the reply records.
+     * @since v6.0.0
+     */
+    export function resolvePtr(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[]) => void): void;
+    export namespace resolvePtr {
+        function __promisify__(hostname: string): Promise<string[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve a start of authority record (`SOA` record) for
+     * the `hostname`. The `address` argument passed to the `callback` function will
+     * be an object with the following properties:
+     *
+     * * `nsname`
+     * * `hostmaster`
+     * * `serial`
+     * * `refresh`
+     * * `retry`
+     * * `expire`
+     * * `minttl`
+     *
+     * ```js
+     * {
+     *   nsname: 'ns.example.com',
+     *   hostmaster: 'root.example.com',
+     *   serial: 2013101809,
+     *   refresh: 10000,
+     *   retry: 2400,
+     *   expire: 604800,
+     *   minttl: 3600
+     * }
+     * ```
+     * @since v0.11.10
+     */
+    export function resolveSoa(hostname: string, callback: (err: NodeJS.ErrnoException | null, address: SoaRecord) => void): void;
+    export namespace resolveSoa {
+        function __promisify__(hostname: string): Promise<SoaRecord>;
+    }
+    /**
+     * Uses the DNS protocol to resolve service records (`SRV` records) for the`hostname`. The `addresses` argument passed to the `callback` function will
+     * be an array of objects with the following properties:
+     *
+     * * `priority`
+     * * `weight`
+     * * `port`
+     * * `name`
+     *
+     * ```js
+     * {
+     *   priority: 10,
+     *   weight: 5,
+     *   port: 21223,
+     *   name: 'service.example.com'
+     * }
+     * ```
+     * @since v0.1.27
+     */
+    export function resolveSrv(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: SrvRecord[]) => void): void;
+    export namespace resolveSrv {
+        function __promisify__(hostname: string): Promise<SrvRecord[]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve text queries (`TXT` records) for the`hostname`. The `records` argument passed to the `callback` function is a
+     * two-dimensional array of the text records available for `hostname` (e.g.`[ ['v=spf1 ip4:0.0.0.0 ', '~all' ] ]`). Each sub-array contains TXT chunks of
+     * one record. Depending on the use case, these could be either joined together or
+     * treated separately.
+     * @since v0.1.27
+     */
+    export function resolveTxt(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: string[][]) => void): void;
+    export namespace resolveTxt {
+        function __promisify__(hostname: string): Promise<string[][]>;
+    }
+    /**
+     * Uses the DNS protocol to resolve all records (also known as `ANY` or `*` query).
+     * The `ret` argument passed to the `callback` function will be an array containing
+     * various types of records. Each object has a property `type` that indicates the
+     * type of the current record. And depending on the `type`, additional properties
+     * will be present on the object:
+     *
+     * <omitted>
+     *
+     * Here is an example of the `ret` object passed to the callback:
+     *
+     * ```js
+     * [ { type: 'A', address: '127.0.0.1', ttl: 299 },
+     *   { type: 'CNAME', value: 'example.com' },
+     *   { type: 'MX', exchange: 'alt4.aspmx.l.example.com', priority: 50 },
+     *   { type: 'NS', value: 'ns1.example.com' },
+     *   { type: 'TXT', entries: [ 'v=spf1 include:_spf.example.com ~all' ] },
+     *   { type: 'SOA',
+     *     nsname: 'ns1.example.com',
+     *     hostmaster: 'admin.example.com',
+     *     serial: 156696742,
+     *     refresh: 900,
+     *     retry: 900,
+     *     expire: 1800,
+     *     minttl: 60 } ]
+     * ```
+     *
+     * DNS server operators may choose not to respond to `ANY`queries. It may be better to call individual methods like {@link resolve4},{@link resolveMx}, and so on. For more details, see [RFC
+     * 8482](https://tools.ietf.org/html/rfc8482).
+     */
+    export function resolveAny(hostname: string, callback: (err: NodeJS.ErrnoException | null, addresses: AnyRecord[]) => void): void;
+    export namespace resolveAny {
+        function __promisify__(hostname: string): Promise<AnyRecord[]>;
+    }
+    /**
+     * Performs a reverse DNS query that resolves an IPv4 or IPv6 address to an
+     * array of host names.
+     *
+     * On error, `err` is an `Error` object, where `err.code` is
+     * one of the `DNS error codes`.
+     * @since v0.1.16
+     */
+    export function reverse(ip: string, callback: (err: NodeJS.ErrnoException | null, hostnames: string[]) => void): void;
+    /**
+     * Sets the IP address and port of servers to be used when performing DNS
+     * resolution. The `servers` argument is an array of [RFC 5952](https://tools.ietf.org/html/rfc5952#section-6) formatted
+     * addresses. If the port is the IANA default DNS port (53) it can be omitted.
+     *
+     * ```js
+     * dns.setServers([
+     *   '4.4.4.4',
+     *   '[2001:4860:4860::8888]',
+     *   '4.4.4.4:1053',
+     *   '[2001:4860:4860::8888]:1053',
+     * ]);
+     * ```
+     *
+     * An error will be thrown if an invalid address is provided.
+     *
+     * The `dns.setServers()` method must not be called while a DNS query is in
+     * progress.
+     *
+     * The {@link setServers} method affects only {@link resolve},`dns.resolve*()` and {@link reverse} (and specifically _not_ {@link lookup}).
+     *
+     * This method works much like [resolve.conf](https://man7.org/linux/man-pages/man5/resolv.conf.5.html).
+     * That is, if attempting to resolve with the first server provided results in a`NOTFOUND` error, the `resolve()` method will _not_ attempt to resolve with
+     * subsequent servers provided. Fallback DNS servers will only be used if the
+     * earlier ones time out or result in some other error.
+     * @since v0.11.3
+     * @param servers array of `RFC 5952` formatted addresses
+     */
+    export function setServers(servers: ReadonlyArray<string>): void;
+    /**
+     * Returns an array of IP address strings, formatted according to [RFC 5952](https://tools.ietf.org/html/rfc5952#section-6),
+     * that are currently configured for DNS resolution. A string will include a port
+     * section if a custom port is used.
+     *
+     * ```js
+     * [
+     *   '4.4.4.4',
+     *   '2001:4860:4860::8888',
+     *   '4.4.4.4:1053',
+     *   '[2001:4860:4860::8888]:1053',
+     * ]
+     * ```
+     * @since v0.11.3
+     */
+    export function getServers(): string[];
+    /**
+     * Set the default value of `verbatim` in {@link lookup} and `dnsPromises.lookup()`. The value could be:
+     *
+     * * `ipv4first`: sets default `verbatim` `false`.
+     * * `verbatim`: sets default `verbatim` `true`.
+     *
+     * The default is `ipv4first` and {@link setDefaultResultOrder} have higher
+     * priority than `--dns-result-order`. When using `worker threads`,{@link setDefaultResultOrder} from the main thread won't affect the default
+     * dns orders in workers.
+     * @since v16.4.0, v14.18.0
+     * @param order must be `'ipv4first'` or `'verbatim'`.
+     */
+    export function setDefaultResultOrder(order: 'ipv4first' | 'verbatim'): void;
+    // Error codes
+    export const NODATA: string;
+    export const FORMERR: string;
+    export const SERVFAIL: string;
+    export const NOTFOUND: string;
+    export const NOTIMP: string;
+    export const REFUSED: string;
+    export const BADQUERY: string;
+    export const BADNAME: string;
+    export const BADFAMILY: string;
+    export const BADRESP: string;
+    export const CONNREFUSED: string;
+    export const TIMEOUT: string;
+    export const EOF: string;
+    export const FILE: string;
+    export const NOMEM: string;
+    export const DESTRUCTION: string;
+    export const BADSTR: string;
+    export const BADFLAGS: string;
+    export const NONAME: string;
+    export const BADHINTS: string;
+    export const NOTINITIALIZED: string;
+    export const LOADIPHLPAPI: string;
+    export const ADDRGETNETWORKPARAMS: string;
+    export const CANCELLED: string;
+    export interface ResolverOptions {
+        timeout?: number | undefined;
+        /**
+         * @default 4
+         */
+        tries?: number;
+    }
+    /**
+     * An independent resolver for DNS requests.
+     *
+     * Creating a new resolver uses the default server settings. Setting
+     * the servers used for a resolver using `resolver.setServers()` does not affect
+     * other resolvers:
+     *
+     * ```js
+     * const { Resolver } = require('dns');
+     * const resolver = new Resolver();
+     * resolver.setServers(['4.4.4.4']);
+     *
+     * // This request will use the server at 4.4.4.4, independent of global settings.
+     * resolver.resolve4('example.org', (err, addresses) => {
+     *   // ...
+     * });
+     * ```
+     *
+     * The following methods from the `dns` module are available:
+     *
+     * * `resolver.getServers()`
+     * * `resolver.resolve()`
+     * * `resolver.resolve4()`
+     * * `resolver.resolve6()`
+     * * `resolver.resolveAny()`
+     * * `resolver.resolveCaa()`
+     * * `resolver.resolveCname()`
+     * * `resolver.resolveMx()`
+     * * `resolver.resolveNaptr()`
+     * * `resolver.resolveNs()`
+     * * `resolver.resolvePtr()`
+     * * `resolver.resolveSoa()`
+     * * `resolver.resolveSrv()`
+     * * `resolver.resolveTxt()`
+     * * `resolver.reverse()`
+     * * `resolver.setServers()`
+     * @since v8.3.0
+     */
+    export class Resolver {
+        constructor(options?: ResolverOptions);
+        /**
+         * Cancel all outstanding DNS queries made by this resolver. The corresponding
+         * callbacks will be called with an error with code `ECANCELLED`.
+         * @since v8.3.0
+         */
+        cancel(): void;
+        getServers: typeof getServers;
+        resolve: typeof resolve;
+        resolve4: typeof resolve4;
+        resolve6: typeof resolve6;
+        resolveAny: typeof resolveAny;
+        resolveCname: typeof resolveCname;
+        resolveMx: typeof resolveMx;
+        resolveNaptr: typeof resolveNaptr;
+        resolveNs: typeof resolveNs;
+        resolvePtr: typeof resolvePtr;
+        resolveSoa: typeof resolveSoa;
+        resolveSrv: typeof resolveSrv;
+        resolveTxt: typeof resolveTxt;
+        reverse: typeof reverse;
+        /**
+         * The resolver instance will send its requests from the specified IP address.
+         * This allows programs to specify outbound interfaces when used on multi-homed
+         * systems.
+         *
+         * If a v4 or v6 address is not specified, it is set to the default, and the
+         * operating system will choose a local address automatically.
+         *
+         * The resolver will use the v4 local address when making requests to IPv4 DNS
+         * servers, and the v6 local address when making requests to IPv6 DNS servers.
+         * The `rrtype` of resolution requests has no impact on the local address used.
+         * @since v15.1.0, v14.17.0
+         * @param [ipv4='0.0.0.0'] A string representation of an IPv4 address.
+         * @param [ipv6='::0'] A string representation of an IPv6 address.
+         */
+        setLocalAddress(ipv4?: string, ipv6?: string): void;
+        setServers: typeof setServers;
+    }
+    export { dnsPromises as promises };
+}
+declare module 'node:dns' {
+    export * from 'dns';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/dns/promises.d.ts b/igv_component/node_modules/@types/node/ts4.8/dns/promises.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..77cd807bd501b5a4d8687ed604989f6c2c252f2e
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/dns/promises.d.ts
@@ -0,0 +1,370 @@
+/**
+ * The `dns.promises` API provides an alternative set of asynchronous DNS methods
+ * that return `Promise` objects rather than using callbacks. The API is accessible
+ * via `require('dns').promises` or `require('dns/promises')`.
+ * @since v10.6.0
+ */
+declare module 'dns/promises' {
+    import {
+        LookupAddress,
+        LookupOneOptions,
+        LookupAllOptions,
+        LookupOptions,
+        AnyRecord,
+        CaaRecord,
+        MxRecord,
+        NaptrRecord,
+        SoaRecord,
+        SrvRecord,
+        ResolveWithTtlOptions,
+        RecordWithTtl,
+        ResolveOptions,
+        ResolverOptions,
+    } from 'node:dns';
+    /**
+     * Returns an array of IP address strings, formatted according to [RFC 5952](https://tools.ietf.org/html/rfc5952#section-6),
+     * that are currently configured for DNS resolution. A string will include a port
+     * section if a custom port is used.
+     *
+     * ```js
+     * [
+     *   '4.4.4.4',
+     *   '2001:4860:4860::8888',
+     *   '4.4.4.4:1053',
+     *   '[2001:4860:4860::8888]:1053',
+     * ]
+     * ```
+     * @since v10.6.0
+     */
+    function getServers(): string[];
+    /**
+     * Resolves a host name (e.g. `'nodejs.org'`) into the first found A (IPv4) or
+     * AAAA (IPv6) record. All `option` properties are optional. If `options` is an
+     * integer, then it must be `4` or `6` – if `options` is not provided, then IPv4
+     * and IPv6 addresses are both returned if found.
+     *
+     * With the `all` option set to `true`, the `Promise` is resolved with `addresses`being an array of objects with the properties `address` and `family`.
+     *
+     * On error, the `Promise` is rejected with an `Error` object, where `err.code`is the error code.
+     * Keep in mind that `err.code` will be set to `'ENOTFOUND'` not only when
+     * the host name does not exist but also when the lookup fails in other ways
+     * such as no available file descriptors.
+     *
+     * `dnsPromises.lookup()` does not necessarily have anything to do with the DNS
+     * protocol. The implementation uses an operating system facility that can
+     * associate names with addresses, and vice versa. This implementation can have
+     * subtle but important consequences on the behavior of any Node.js program. Please
+     * take some time to consult the `Implementation considerations section` before
+     * using `dnsPromises.lookup()`.
+     *
+     * Example usage:
+     *
+     * ```js
+     * const dns = require('dns');
+     * const dnsPromises = dns.promises;
+     * const options = {
+     *   family: 6,
+     *   hints: dns.ADDRCONFIG | dns.V4MAPPED,
+     * };
+     *
+     * dnsPromises.lookup('example.com', options).then((result) => {
+     *   console.log('address: %j family: IPv%s', result.address, result.family);
+     *   // address: "2606:2800:220:1:248:1893:25c8:1946" family: IPv6
+     * });
+     *
+     * // When options.all is true, the result will be an Array.
+     * options.all = true;
+     * dnsPromises.lookup('example.com', options).then((result) => {
+     *   console.log('addresses: %j', result);
+     *   // addresses: [{"address":"2606:2800:220:1:248:1893:25c8:1946","family":6}]
+     * });
+     * ```
+     * @since v10.6.0
+     */
+    function lookup(hostname: string, family: number): Promise<LookupAddress>;
+    function lookup(hostname: string, options: LookupOneOptions): Promise<LookupAddress>;
+    function lookup(hostname: string, options: LookupAllOptions): Promise<LookupAddress[]>;
+    function lookup(hostname: string, options: LookupOptions): Promise<LookupAddress | LookupAddress[]>;
+    function lookup(hostname: string): Promise<LookupAddress>;
+    /**
+     * Resolves the given `address` and `port` into a host name and service using
+     * the operating system's underlying `getnameinfo` implementation.
+     *
+     * If `address` is not a valid IP address, a `TypeError` will be thrown.
+     * The `port` will be coerced to a number. If it is not a legal port, a `TypeError`will be thrown.
+     *
+     * On error, the `Promise` is rejected with an `Error` object, where `err.code`is the error code.
+     *
+     * ```js
+     * const dnsPromises = require('dns').promises;
+     * dnsPromises.lookupService('127.0.0.1', 22).then((result) => {
+     *   console.log(result.hostname, result.service);
+     *   // Prints: localhost ssh
+     * });
+     * ```
+     * @since v10.6.0
+     */
+    function lookupService(
+        address: string,
+        port: number
+    ): Promise<{
+        hostname: string;
+        service: string;
+    }>;
+    /**
+     * Uses the DNS protocol to resolve a host name (e.g. `'nodejs.org'`) into an array
+     * of the resource records. When successful, the `Promise` is resolved with an
+     * array of resource records. The type and structure of individual results vary
+     * based on `rrtype`:
+     *
+     * <omitted>
+     *
+     * On error, the `Promise` is rejected with an `Error` object, where `err.code`is one of the `DNS error codes`.
+     * @since v10.6.0
+     * @param hostname Host name to resolve.
+     * @param [rrtype='A'] Resource record type.
+     */
+    function resolve(hostname: string): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'A'): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'AAAA'): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'ANY'): Promise<AnyRecord[]>;
+    function resolve(hostname: string, rrtype: 'CAA'): Promise<CaaRecord[]>;
+    function resolve(hostname: string, rrtype: 'CNAME'): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'MX'): Promise<MxRecord[]>;
+    function resolve(hostname: string, rrtype: 'NAPTR'): Promise<NaptrRecord[]>;
+    function resolve(hostname: string, rrtype: 'NS'): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'PTR'): Promise<string[]>;
+    function resolve(hostname: string, rrtype: 'SOA'): Promise<SoaRecord>;
+    function resolve(hostname: string, rrtype: 'SRV'): Promise<SrvRecord[]>;
+    function resolve(hostname: string, rrtype: 'TXT'): Promise<string[][]>;
+    function resolve(hostname: string, rrtype: string): Promise<string[] | MxRecord[] | NaptrRecord[] | SoaRecord | SrvRecord[] | string[][] | AnyRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve IPv4 addresses (`A` records) for the`hostname`. On success, the `Promise` is resolved with an array of IPv4
+     * addresses (e.g. `['74.125.79.104', '74.125.79.105', '74.125.79.106']`).
+     * @since v10.6.0
+     * @param hostname Host name to resolve.
+     */
+    function resolve4(hostname: string): Promise<string[]>;
+    function resolve4(hostname: string, options: ResolveWithTtlOptions): Promise<RecordWithTtl[]>;
+    function resolve4(hostname: string, options: ResolveOptions): Promise<string[] | RecordWithTtl[]>;
+    /**
+     * Uses the DNS protocol to resolve IPv6 addresses (`AAAA` records) for the`hostname`. On success, the `Promise` is resolved with an array of IPv6
+     * addresses.
+     * @since v10.6.0
+     * @param hostname Host name to resolve.
+     */
+    function resolve6(hostname: string): Promise<string[]>;
+    function resolve6(hostname: string, options: ResolveWithTtlOptions): Promise<RecordWithTtl[]>;
+    function resolve6(hostname: string, options: ResolveOptions): Promise<string[] | RecordWithTtl[]>;
+    /**
+     * Uses the DNS protocol to resolve all records (also known as `ANY` or `*` query).
+     * On success, the `Promise` is resolved with an array containing various types of
+     * records. Each object has a property `type` that indicates the type of the
+     * current record. And depending on the `type`, additional properties will be
+     * present on the object:
+     *
+     * <omitted>
+     *
+     * Here is an example of the result object:
+     *
+     * ```js
+     * [ { type: 'A', address: '127.0.0.1', ttl: 299 },
+     *   { type: 'CNAME', value: 'example.com' },
+     *   { type: 'MX', exchange: 'alt4.aspmx.l.example.com', priority: 50 },
+     *   { type: 'NS', value: 'ns1.example.com' },
+     *   { type: 'TXT', entries: [ 'v=spf1 include:_spf.example.com ~all' ] },
+     *   { type: 'SOA',
+     *     nsname: 'ns1.example.com',
+     *     hostmaster: 'admin.example.com',
+     *     serial: 156696742,
+     *     refresh: 900,
+     *     retry: 900,
+     *     expire: 1800,
+     *     minttl: 60 } ]
+     * ```
+     * @since v10.6.0
+     */
+    function resolveAny(hostname: string): Promise<AnyRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve `CAA` records for the `hostname`. On success,
+     * the `Promise` is resolved with an array of objects containing available
+     * certification authority authorization records available for the `hostname`(e.g. `[{critical: 0, iodef: 'mailto:pki@example.com'},{critical: 128, issue: 'pki.example.com'}]`).
+     * @since v15.0.0, v14.17.0
+     */
+    function resolveCaa(hostname: string): Promise<CaaRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve `CNAME` records for the `hostname`. On success,
+     * the `Promise` is resolved with an array of canonical name records available for
+     * the `hostname` (e.g. `['bar.example.com']`).
+     * @since v10.6.0
+     */
+    function resolveCname(hostname: string): Promise<string[]>;
+    /**
+     * Uses the DNS protocol to resolve mail exchange records (`MX` records) for the`hostname`. On success, the `Promise` is resolved with an array of objects
+     * containing both a `priority` and `exchange` property (e.g.`[{priority: 10, exchange: 'mx.example.com'}, ...]`).
+     * @since v10.6.0
+     */
+    function resolveMx(hostname: string): Promise<MxRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve regular expression based records (`NAPTR`records) for the `hostname`. On success, the `Promise` is resolved with an array
+     * of objects with the following properties:
+     *
+     * * `flags`
+     * * `service`
+     * * `regexp`
+     * * `replacement`
+     * * `order`
+     * * `preference`
+     *
+     * ```js
+     * {
+     *   flags: 's',
+     *   service: 'SIP+D2U',
+     *   regexp: '',
+     *   replacement: '_sip._udp.example.com',
+     *   order: 30,
+     *   preference: 100
+     * }
+     * ```
+     * @since v10.6.0
+     */
+    function resolveNaptr(hostname: string): Promise<NaptrRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve name server records (`NS` records) for the`hostname`. On success, the `Promise` is resolved with an array of name server
+     * records available for `hostname` (e.g.`['ns1.example.com', 'ns2.example.com']`).
+     * @since v10.6.0
+     */
+    function resolveNs(hostname: string): Promise<string[]>;
+    /**
+     * Uses the DNS protocol to resolve pointer records (`PTR` records) for the`hostname`. On success, the `Promise` is resolved with an array of strings
+     * containing the reply records.
+     * @since v10.6.0
+     */
+    function resolvePtr(hostname: string): Promise<string[]>;
+    /**
+     * Uses the DNS protocol to resolve a start of authority record (`SOA` record) for
+     * the `hostname`. On success, the `Promise` is resolved with an object with the
+     * following properties:
+     *
+     * * `nsname`
+     * * `hostmaster`
+     * * `serial`
+     * * `refresh`
+     * * `retry`
+     * * `expire`
+     * * `minttl`
+     *
+     * ```js
+     * {
+     *   nsname: 'ns.example.com',
+     *   hostmaster: 'root.example.com',
+     *   serial: 2013101809,
+     *   refresh: 10000,
+     *   retry: 2400,
+     *   expire: 604800,
+     *   minttl: 3600
+     * }
+     * ```
+     * @since v10.6.0
+     */
+    function resolveSoa(hostname: string): Promise<SoaRecord>;
+    /**
+     * Uses the DNS protocol to resolve service records (`SRV` records) for the`hostname`. On success, the `Promise` is resolved with an array of objects with
+     * the following properties:
+     *
+     * * `priority`
+     * * `weight`
+     * * `port`
+     * * `name`
+     *
+     * ```js
+     * {
+     *   priority: 10,
+     *   weight: 5,
+     *   port: 21223,
+     *   name: 'service.example.com'
+     * }
+     * ```
+     * @since v10.6.0
+     */
+    function resolveSrv(hostname: string): Promise<SrvRecord[]>;
+    /**
+     * Uses the DNS protocol to resolve text queries (`TXT` records) for the`hostname`. On success, the `Promise` is resolved with a two-dimensional array
+     * of the text records available for `hostname` (e.g.`[ ['v=spf1 ip4:0.0.0.0 ', '~all' ] ]`). Each sub-array contains TXT chunks of
+     * one record. Depending on the use case, these could be either joined together or
+     * treated separately.
+     * @since v10.6.0
+     */
+    function resolveTxt(hostname: string): Promise<string[][]>;
+    /**
+     * Performs a reverse DNS query that resolves an IPv4 or IPv6 address to an
+     * array of host names.
+     *
+     * On error, the `Promise` is rejected with an `Error` object, where `err.code`is one of the `DNS error codes`.
+     * @since v10.6.0
+     */
+    function reverse(ip: string): Promise<string[]>;
+    /**
+     * Sets the IP address and port of servers to be used when performing DNS
+     * resolution. The `servers` argument is an array of [RFC 5952](https://tools.ietf.org/html/rfc5952#section-6) formatted
+     * addresses. If the port is the IANA default DNS port (53) it can be omitted.
+     *
+     * ```js
+     * dnsPromises.setServers([
+     *   '4.4.4.4',
+     *   '[2001:4860:4860::8888]',
+     *   '4.4.4.4:1053',
+     *   '[2001:4860:4860::8888]:1053',
+     * ]);
+     * ```
+     *
+     * An error will be thrown if an invalid address is provided.
+     *
+     * The `dnsPromises.setServers()` method must not be called while a DNS query is in
+     * progress.
+     *
+     * This method works much like [resolve.conf](https://man7.org/linux/man-pages/man5/resolv.conf.5.html).
+     * That is, if attempting to resolve with the first server provided results in a`NOTFOUND` error, the `resolve()` method will _not_ attempt to resolve with
+     * subsequent servers provided. Fallback DNS servers will only be used if the
+     * earlier ones time out or result in some other error.
+     * @since v10.6.0
+     * @param servers array of `RFC 5952` formatted addresses
+     */
+    function setServers(servers: ReadonlyArray<string>): void;
+    /**
+     * Set the default value of `verbatim` in `dns.lookup()` and `dnsPromises.lookup()`. The value could be:
+     *
+     * * `ipv4first`: sets default `verbatim` `false`.
+     * * `verbatim`: sets default `verbatim` `true`.
+     *
+     * The default is `ipv4first` and `dnsPromises.setDefaultResultOrder()` have
+     * higher priority than `--dns-result-order`. When using `worker threads`,`dnsPromises.setDefaultResultOrder()` from the main thread won't affect the
+     * default dns orders in workers.
+     * @since v16.4.0, v14.18.0
+     * @param order must be `'ipv4first'` or `'verbatim'`.
+     */
+    function setDefaultResultOrder(order: 'ipv4first' | 'verbatim'): void;
+    class Resolver {
+        constructor(options?: ResolverOptions);
+        cancel(): void;
+        getServers: typeof getServers;
+        resolve: typeof resolve;
+        resolve4: typeof resolve4;
+        resolve6: typeof resolve6;
+        resolveAny: typeof resolveAny;
+        resolveCname: typeof resolveCname;
+        resolveMx: typeof resolveMx;
+        resolveNaptr: typeof resolveNaptr;
+        resolveNs: typeof resolveNs;
+        resolvePtr: typeof resolvePtr;
+        resolveSoa: typeof resolveSoa;
+        resolveSrv: typeof resolveSrv;
+        resolveTxt: typeof resolveTxt;
+        reverse: typeof reverse;
+        setLocalAddress(ipv4?: string, ipv6?: string): void;
+        setServers: typeof setServers;
+    }
+}
+declare module 'node:dns/promises' {
+    export * from 'dns/promises';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/domain.d.ts b/igv_component/node_modules/@types/node/ts4.8/domain.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..fafe68a5d3fc413012b616cc05bdba2f661ea1af
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/domain.d.ts
@@ -0,0 +1,170 @@
+/**
+ * **This module is pending deprecation.** Once a replacement API has been
+ * finalized, this module will be fully deprecated. Most developers should
+ * **not** have cause to use this module. Users who absolutely must have
+ * the functionality that domains provide may rely on it for the time being
+ * but should expect to have to migrate to a different solution
+ * in the future.
+ *
+ * Domains provide a way to handle multiple different IO operations as a
+ * single group. If any of the event emitters or callbacks registered to a
+ * domain emit an `'error'` event, or throw an error, then the domain object
+ * will be notified, rather than losing the context of the error in the`process.on('uncaughtException')` handler, or causing the program to
+ * exit immediately with an error code.
+ * @deprecated Since v1.4.2 - Deprecated
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/domain.js)
+ */
+declare module 'domain' {
+    import EventEmitter = require('node:events');
+    /**
+     * The `Domain` class encapsulates the functionality of routing errors and
+     * uncaught exceptions to the active `Domain` object.
+     *
+     * To handle the errors that it catches, listen to its `'error'` event.
+     */
+    class Domain extends EventEmitter {
+        /**
+         * An array of timers and event emitters that have been explicitly added
+         * to the domain.
+         */
+        members: Array<EventEmitter | NodeJS.Timer>;
+        /**
+         * The `enter()` method is plumbing used by the `run()`, `bind()`, and`intercept()` methods to set the active domain. It sets `domain.active` and`process.domain` to the domain, and implicitly
+         * pushes the domain onto the domain
+         * stack managed by the domain module (see {@link exit} for details on the
+         * domain stack). The call to `enter()` delimits the beginning of a chain of
+         * asynchronous calls and I/O operations bound to a domain.
+         *
+         * Calling `enter()` changes only the active domain, and does not alter the domain
+         * itself. `enter()` and `exit()` can be called an arbitrary number of times on a
+         * single domain.
+         */
+        enter(): void;
+        /**
+         * The `exit()` method exits the current domain, popping it off the domain stack.
+         * Any time execution is going to switch to the context of a different chain of
+         * asynchronous calls, it's important to ensure that the current domain is exited.
+         * The call to `exit()` delimits either the end of or an interruption to the chain
+         * of asynchronous calls and I/O operations bound to a domain.
+         *
+         * If there are multiple, nested domains bound to the current execution context,`exit()` will exit any domains nested within this domain.
+         *
+         * Calling `exit()` changes only the active domain, and does not alter the domain
+         * itself. `enter()` and `exit()` can be called an arbitrary number of times on a
+         * single domain.
+         */
+        exit(): void;
+        /**
+         * Run the supplied function in the context of the domain, implicitly
+         * binding all event emitters, timers, and lowlevel requests that are
+         * created in that context. Optionally, arguments can be passed to
+         * the function.
+         *
+         * This is the most basic way to use a domain.
+         *
+         * ```js
+         * const domain = require('domain');
+         * const fs = require('fs');
+         * const d = domain.create();
+         * d.on('error', (er) => {
+         *   console.error('Caught error!', er);
+         * });
+         * d.run(() => {
+         *   process.nextTick(() => {
+         *     setTimeout(() => { // Simulating some various async stuff
+         *       fs.open('non-existent file', 'r', (er, fd) => {
+         *         if (er) throw er;
+         *         // proceed...
+         *       });
+         *     }, 100);
+         *   });
+         * });
+         * ```
+         *
+         * In this example, the `d.on('error')` handler will be triggered, rather
+         * than crashing the program.
+         */
+        run<T>(fn: (...args: any[]) => T, ...args: any[]): T;
+        /**
+         * Explicitly adds an emitter to the domain. If any event handlers called by
+         * the emitter throw an error, or if the emitter emits an `'error'` event, it
+         * will be routed to the domain's `'error'` event, just like with implicit
+         * binding.
+         *
+         * This also works with timers that are returned from `setInterval()` and `setTimeout()`. If their callback function throws, it will be caught by
+         * the domain `'error'` handler.
+         *
+         * If the Timer or `EventEmitter` was already bound to a domain, it is removed
+         * from that one, and bound to this one instead.
+         * @param emitter emitter or timer to be added to the domain
+         */
+        add(emitter: EventEmitter | NodeJS.Timer): void;
+        /**
+         * The opposite of {@link add}. Removes domain handling from the
+         * specified emitter.
+         * @param emitter emitter or timer to be removed from the domain
+         */
+        remove(emitter: EventEmitter | NodeJS.Timer): void;
+        /**
+         * The returned function will be a wrapper around the supplied callback
+         * function. When the returned function is called, any errors that are
+         * thrown will be routed to the domain's `'error'` event.
+         *
+         * ```js
+         * const d = domain.create();
+         *
+         * function readSomeFile(filename, cb) {
+         *   fs.readFile(filename, 'utf8', d.bind((er, data) => {
+         *     // If this throws, it will also be passed to the domain.
+         *     return cb(er, data ? JSON.parse(data) : null);
+         *   }));
+         * }
+         *
+         * d.on('error', (er) => {
+         *   // An error occurred somewhere. If we throw it now, it will crash the program
+         *   // with the normal line number and stack message.
+         * });
+         * ```
+         * @param callback The callback function
+         * @return The bound function
+         */
+        bind<T extends Function>(callback: T): T;
+        /**
+         * This method is almost identical to {@link bind}. However, in
+         * addition to catching thrown errors, it will also intercept `Error` objects sent as the first argument to the function.
+         *
+         * In this way, the common `if (err) return callback(err);` pattern can be replaced
+         * with a single error handler in a single place.
+         *
+         * ```js
+         * const d = domain.create();
+         *
+         * function readSomeFile(filename, cb) {
+         *   fs.readFile(filename, 'utf8', d.intercept((data) => {
+         *     // Note, the first argument is never passed to the
+         *     // callback since it is assumed to be the 'Error' argument
+         *     // and thus intercepted by the domain.
+         *
+         *     // If this throws, it will also be passed to the domain
+         *     // so the error-handling logic can be moved to the 'error'
+         *     // event on the domain instead of being repeated throughout
+         *     // the program.
+         *     return cb(null, JSON.parse(data));
+         *   }));
+         * }
+         *
+         * d.on('error', (er) => {
+         *   // An error occurred somewhere. If we throw it now, it will crash the program
+         *   // with the normal line number and stack message.
+         * });
+         * ```
+         * @param callback The callback function
+         * @return The intercepted function
+         */
+        intercept<T extends Function>(callback: T): T;
+    }
+    function create(): Domain;
+}
+declare module 'node:domain' {
+    export * from 'domain';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/events.d.ts b/igv_component/node_modules/@types/node/ts4.8/events.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b8283ac95a1f2bc0a27a8839c4108cdb4cea490a
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/events.d.ts
@@ -0,0 +1,641 @@
+/**
+ * Much of the Node.js core API is built around an idiomatic asynchronous
+ * event-driven architecture in which certain kinds of objects (called "emitters")
+ * emit named events that cause `Function` objects ("listeners") to be called.
+ *
+ * For instance: a `net.Server` object emits an event each time a peer
+ * connects to it; a `fs.ReadStream` emits an event when the file is opened;
+ * a `stream` emits an event whenever data is available to be read.
+ *
+ * All objects that emit events are instances of the `EventEmitter` class. These
+ * objects expose an `eventEmitter.on()` function that allows one or more
+ * functions to be attached to named events emitted by the object. Typically,
+ * event names are camel-cased strings but any valid JavaScript property key
+ * can be used.
+ *
+ * When the `EventEmitter` object emits an event, all of the functions attached
+ * to that specific event are called _synchronously_. Any values returned by the
+ * called listeners are _ignored_ and discarded.
+ *
+ * The following example shows a simple `EventEmitter` instance with a single
+ * listener. The `eventEmitter.on()` method is used to register listeners, while
+ * the `eventEmitter.emit()` method is used to trigger the event.
+ *
+ * ```js
+ * const EventEmitter = require('events');
+ *
+ * class MyEmitter extends EventEmitter {}
+ *
+ * const myEmitter = new MyEmitter();
+ * myEmitter.on('event', () => {
+ *   console.log('an event occurred!');
+ * });
+ * myEmitter.emit('event');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/events.js)
+ */
+declare module 'events' {
+    interface EventEmitterOptions {
+        /**
+         * Enables automatic capturing of promise rejection.
+         */
+        captureRejections?: boolean | undefined;
+    }
+    interface NodeEventTarget {
+        once(eventName: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    interface DOMEventTarget {
+        addEventListener(
+            eventName: string,
+            listener: (...args: any[]) => void,
+            opts?: {
+                once: boolean;
+            }
+        ): any;
+    }
+    interface StaticEventEmitterOptions {
+        signal?: AbortSignal | undefined;
+    }
+    interface EventEmitter extends NodeJS.EventEmitter {}
+    /**
+     * The `EventEmitter` class is defined and exposed by the `events` module:
+     *
+     * ```js
+     * const EventEmitter = require('events');
+     * ```
+     *
+     * All `EventEmitter`s emit the event `'newListener'` when new listeners are
+     * added and `'removeListener'` when existing listeners are removed.
+     *
+     * It supports the following option:
+     * @since v0.1.26
+     */
+    class EventEmitter {
+        constructor(options?: EventEmitterOptions);
+        /**
+         * Creates a `Promise` that is fulfilled when the `EventEmitter` emits the given
+         * event or that is rejected if the `EventEmitter` emits `'error'` while waiting.
+         * The `Promise` will resolve with an array of all the arguments emitted to the
+         * given event.
+         *
+         * This method is intentionally generic and works with the web platform [EventTarget](https://dom.spec.whatwg.org/#interface-eventtarget) interface, which has no special`'error'` event
+         * semantics and does not listen to the `'error'` event.
+         *
+         * ```js
+         * const { once, EventEmitter } = require('events');
+         *
+         * async function run() {
+         *   const ee = new EventEmitter();
+         *
+         *   process.nextTick(() => {
+         *     ee.emit('myevent', 42);
+         *   });
+         *
+         *   const [value] = await once(ee, 'myevent');
+         *   console.log(value);
+         *
+         *   const err = new Error('kaboom');
+         *   process.nextTick(() => {
+         *     ee.emit('error', err);
+         *   });
+         *
+         *   try {
+         *     await once(ee, 'myevent');
+         *   } catch (err) {
+         *     console.log('error happened', err);
+         *   }
+         * }
+         *
+         * run();
+         * ```
+         *
+         * The special handling of the `'error'` event is only used when `events.once()`is used to wait for another event. If `events.once()` is used to wait for the
+         * '`error'` event itself, then it is treated as any other kind of event without
+         * special handling:
+         *
+         * ```js
+         * const { EventEmitter, once } = require('events');
+         *
+         * const ee = new EventEmitter();
+         *
+         * once(ee, 'error')
+         *   .then(([err]) => console.log('ok', err.message))
+         *   .catch((err) => console.log('error', err.message));
+         *
+         * ee.emit('error', new Error('boom'));
+         *
+         * // Prints: ok boom
+         * ```
+         *
+         * An `AbortSignal` can be used to cancel waiting for the event:
+         *
+         * ```js
+         * const { EventEmitter, once } = require('events');
+         *
+         * const ee = new EventEmitter();
+         * const ac = new AbortController();
+         *
+         * async function foo(emitter, event, signal) {
+         *   try {
+         *     await once(emitter, event, { signal });
+         *     console.log('event emitted!');
+         *   } catch (error) {
+         *     if (error.name === 'AbortError') {
+         *       console.error('Waiting for the event was canceled!');
+         *     } else {
+         *       console.error('There was an error', error.message);
+         *     }
+         *   }
+         * }
+         *
+         * foo(ee, 'foo', ac.signal);
+         * ac.abort(); // Abort waiting for the event
+         * ee.emit('foo'); // Prints: Waiting for the event was canceled!
+         * ```
+         * @since v11.13.0, v10.16.0
+         */
+        static once(emitter: NodeEventTarget, eventName: string | symbol, options?: StaticEventEmitterOptions): Promise<any[]>;
+        static once(emitter: DOMEventTarget, eventName: string, options?: StaticEventEmitterOptions): Promise<any[]>;
+        /**
+         * ```js
+         * const { on, EventEmitter } = require('events');
+         *
+         * (async () => {
+         *   const ee = new EventEmitter();
+         *
+         *   // Emit later on
+         *   process.nextTick(() => {
+         *     ee.emit('foo', 'bar');
+         *     ee.emit('foo', 42);
+         *   });
+         *
+         *   for await (const event of on(ee, 'foo')) {
+         *     // The execution of this inner block is synchronous and it
+         *     // processes one event at a time (even with await). Do not use
+         *     // if concurrent execution is required.
+         *     console.log(event); // prints ['bar'] [42]
+         *   }
+         *   // Unreachable here
+         * })();
+         * ```
+         *
+         * Returns an `AsyncIterator` that iterates `eventName` events. It will throw
+         * if the `EventEmitter` emits `'error'`. It removes all listeners when
+         * exiting the loop. The `value` returned by each iteration is an array
+         * composed of the emitted event arguments.
+         *
+         * An `AbortSignal` can be used to cancel waiting on events:
+         *
+         * ```js
+         * const { on, EventEmitter } = require('events');
+         * const ac = new AbortController();
+         *
+         * (async () => {
+         *   const ee = new EventEmitter();
+         *
+         *   // Emit later on
+         *   process.nextTick(() => {
+         *     ee.emit('foo', 'bar');
+         *     ee.emit('foo', 42);
+         *   });
+         *
+         *   for await (const event of on(ee, 'foo', { signal: ac.signal })) {
+         *     // The execution of this inner block is synchronous and it
+         *     // processes one event at a time (even with await). Do not use
+         *     // if concurrent execution is required.
+         *     console.log(event); // prints ['bar'] [42]
+         *   }
+         *   // Unreachable here
+         * })();
+         *
+         * process.nextTick(() => ac.abort());
+         * ```
+         * @since v13.6.0, v12.16.0
+         * @param eventName The name of the event being listened for
+         * @return that iterates `eventName` events emitted by the `emitter`
+         */
+        static on(emitter: NodeJS.EventEmitter, eventName: string, options?: StaticEventEmitterOptions): AsyncIterableIterator<any>;
+        /**
+         * A class method that returns the number of listeners for the given `eventName`registered on the given `emitter`.
+         *
+         * ```js
+         * const { EventEmitter, listenerCount } = require('events');
+         * const myEmitter = new EventEmitter();
+         * myEmitter.on('event', () => {});
+         * myEmitter.on('event', () => {});
+         * console.log(listenerCount(myEmitter, 'event'));
+         * // Prints: 2
+         * ```
+         * @since v0.9.12
+         * @deprecated Since v3.2.0 - Use `listenerCount` instead.
+         * @param emitter The emitter to query
+         * @param eventName The event name
+         */
+        static listenerCount(emitter: NodeJS.EventEmitter, eventName: string | symbol): number;
+        /**
+         * Returns a copy of the array of listeners for the event named `eventName`.
+         *
+         * For `EventEmitter`s this behaves exactly the same as calling `.listeners` on
+         * the emitter.
+         *
+         * For `EventTarget`s this is the only way to get the event listeners for the
+         * event target. This is useful for debugging and diagnostic purposes.
+         *
+         * ```js
+         * const { getEventListeners, EventEmitter } = require('events');
+         *
+         * {
+         *   const ee = new EventEmitter();
+         *   const listener = () => console.log('Events are fun');
+         *   ee.on('foo', listener);
+         *   getEventListeners(ee, 'foo'); // [listener]
+         * }
+         * {
+         *   const et = new EventTarget();
+         *   const listener = () => console.log('Events are fun');
+         *   et.addEventListener('foo', listener);
+         *   getEventListeners(et, 'foo'); // [listener]
+         * }
+         * ```
+         * @since v15.2.0, v14.17.0
+         */
+        static getEventListeners(emitter: DOMEventTarget | NodeJS.EventEmitter, name: string | symbol): Function[];
+        /**
+         * ```js
+         * const {
+         *   setMaxListeners,
+         *   EventEmitter
+         * } = require('events');
+         *
+         * const target = new EventTarget();
+         * const emitter = new EventEmitter();
+         *
+         * setMaxListeners(5, target, emitter);
+         * ```
+         * @since v15.4.0
+         * @param n A non-negative number. The maximum number of listeners per `EventTarget` event.
+         * @param eventsTargets Zero or more {EventTarget} or {EventEmitter} instances. If none are specified, `n` is set as the default max for all newly created {EventTarget} and {EventEmitter}
+         * objects.
+         */
+        static setMaxListeners(n?: number, ...eventTargets: Array<DOMEventTarget | NodeJS.EventEmitter>): void;
+        /**
+         * This symbol shall be used to install a listener for only monitoring `'error'`
+         * events. Listeners installed using this symbol are called before the regular
+         * `'error'` listeners are called.
+         *
+         * Installing a listener using this symbol does not change the behavior once an
+         * `'error'` event is emitted, therefore the process will still crash if no
+         * regular `'error'` listener is installed.
+         */
+        static readonly errorMonitor: unique symbol;
+        static readonly captureRejectionSymbol: unique symbol;
+        /**
+         * Sets or gets the default captureRejection value for all emitters.
+         */
+        // TODO: These should be described using static getter/setter pairs:
+        static captureRejections: boolean;
+        static defaultMaxListeners: number;
+    }
+    import internal = require('node:events');
+    namespace EventEmitter {
+        // Should just be `export { EventEmitter }`, but that doesn't work in TypeScript 3.4
+        export { internal as EventEmitter };
+        export interface Abortable {
+            /**
+             * When provided the corresponding `AbortController` can be used to cancel an asynchronous action.
+             */
+            signal?: AbortSignal | undefined;
+        }
+    }
+    global {
+        namespace NodeJS {
+            interface EventEmitter {
+                /**
+                 * Alias for `emitter.on(eventName, listener)`.
+                 * @since v0.1.26
+                 */
+                addListener(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Adds the `listener` function to the end of the listeners array for the
+                 * event named `eventName`. No checks are made to see if the `listener` has
+                 * already been added. Multiple calls passing the same combination of `eventName`and `listener` will result in the `listener` being added, and called, multiple
+                 * times.
+                 *
+                 * ```js
+                 * server.on('connection', (stream) => {
+                 *   console.log('someone connected!');
+                 * });
+                 * ```
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 *
+                 * By default, event listeners are invoked in the order they are added. The`emitter.prependListener()` method can be used as an alternative to add the
+                 * event listener to the beginning of the listeners array.
+                 *
+                 * ```js
+                 * const myEE = new EventEmitter();
+                 * myEE.on('foo', () => console.log('a'));
+                 * myEE.prependListener('foo', () => console.log('b'));
+                 * myEE.emit('foo');
+                 * // Prints:
+                 * //   b
+                 * //   a
+                 * ```
+                 * @since v0.1.101
+                 * @param eventName The name of the event.
+                 * @param listener The callback function
+                 */
+                on(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Adds a **one-time**`listener` function for the event named `eventName`. The
+                 * next time `eventName` is triggered, this listener is removed and then invoked.
+                 *
+                 * ```js
+                 * server.once('connection', (stream) => {
+                 *   console.log('Ah, we have our first user!');
+                 * });
+                 * ```
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 *
+                 * By default, event listeners are invoked in the order they are added. The`emitter.prependOnceListener()` method can be used as an alternative to add the
+                 * event listener to the beginning of the listeners array.
+                 *
+                 * ```js
+                 * const myEE = new EventEmitter();
+                 * myEE.once('foo', () => console.log('a'));
+                 * myEE.prependOnceListener('foo', () => console.log('b'));
+                 * myEE.emit('foo');
+                 * // Prints:
+                 * //   b
+                 * //   a
+                 * ```
+                 * @since v0.3.0
+                 * @param eventName The name of the event.
+                 * @param listener The callback function
+                 */
+                once(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Removes the specified `listener` from the listener array for the event named`eventName`.
+                 *
+                 * ```js
+                 * const callback = (stream) => {
+                 *   console.log('someone connected!');
+                 * };
+                 * server.on('connection', callback);
+                 * // ...
+                 * server.removeListener('connection', callback);
+                 * ```
+                 *
+                 * `removeListener()` will remove, at most, one instance of a listener from the
+                 * listener array. If any single listener has been added multiple times to the
+                 * listener array for the specified `eventName`, then `removeListener()` must be
+                 * called multiple times to remove each instance.
+                 *
+                 * Once an event is emitted, all listeners attached to it at the
+                 * time of emitting are called in order. This implies that any`removeListener()` or `removeAllListeners()` calls _after_ emitting and _before_ the last listener finishes execution
+                 * will not remove them from`emit()` in progress. Subsequent events behave as expected.
+                 *
+                 * ```js
+                 * const myEmitter = new MyEmitter();
+                 *
+                 * const callbackA = () => {
+                 *   console.log('A');
+                 *   myEmitter.removeListener('event', callbackB);
+                 * };
+                 *
+                 * const callbackB = () => {
+                 *   console.log('B');
+                 * };
+                 *
+                 * myEmitter.on('event', callbackA);
+                 *
+                 * myEmitter.on('event', callbackB);
+                 *
+                 * // callbackA removes listener callbackB but it will still be called.
+                 * // Internal listener array at time of emit [callbackA, callbackB]
+                 * myEmitter.emit('event');
+                 * // Prints:
+                 * //   A
+                 * //   B
+                 *
+                 * // callbackB is now removed.
+                 * // Internal listener array [callbackA]
+                 * myEmitter.emit('event');
+                 * // Prints:
+                 * //   A
+                 * ```
+                 *
+                 * Because listeners are managed using an internal array, calling this will
+                 * change the position indices of any listener registered _after_ the listener
+                 * being removed. This will not impact the order in which listeners are called,
+                 * but it means that any copies of the listener array as returned by
+                 * the `emitter.listeners()` method will need to be recreated.
+                 *
+                 * When a single function has been added as a handler multiple times for a single
+                 * event (as in the example below), `removeListener()` will remove the most
+                 * recently added instance. In the example the `once('ping')`listener is removed:
+                 *
+                 * ```js
+                 * const ee = new EventEmitter();
+                 *
+                 * function pong() {
+                 *   console.log('pong');
+                 * }
+                 *
+                 * ee.on('ping', pong);
+                 * ee.once('ping', pong);
+                 * ee.removeListener('ping', pong);
+                 *
+                 * ee.emit('ping');
+                 * ee.emit('ping');
+                 * ```
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 * @since v0.1.26
+                 */
+                removeListener(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Alias for `emitter.removeListener()`.
+                 * @since v10.0.0
+                 */
+                off(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Removes all listeners, or those of the specified `eventName`.
+                 *
+                 * It is bad practice to remove listeners added elsewhere in the code,
+                 * particularly when the `EventEmitter` instance was created by some other
+                 * component or module (e.g. sockets or file streams).
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 * @since v0.1.26
+                 */
+                removeAllListeners(event?: string | symbol): this;
+                /**
+                 * By default `EventEmitter`s will print a warning if more than `10` listeners are
+                 * added for a particular event. This is a useful default that helps finding
+                 * memory leaks. The `emitter.setMaxListeners()` method allows the limit to be
+                 * modified for this specific `EventEmitter` instance. The value can be set to`Infinity` (or `0`) to indicate an unlimited number of listeners.
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 * @since v0.3.5
+                 */
+                setMaxListeners(n: number): this;
+                /**
+                 * Returns the current max listener value for the `EventEmitter` which is either
+                 * set by `emitter.setMaxListeners(n)` or defaults to {@link defaultMaxListeners}.
+                 * @since v1.0.0
+                 */
+                getMaxListeners(): number;
+                /**
+                 * Returns a copy of the array of listeners for the event named `eventName`.
+                 *
+                 * ```js
+                 * server.on('connection', (stream) => {
+                 *   console.log('someone connected!');
+                 * });
+                 * console.log(util.inspect(server.listeners('connection')));
+                 * // Prints: [ [Function] ]
+                 * ```
+                 * @since v0.1.26
+                 */
+                listeners(eventName: string | symbol): Function[];
+                /**
+                 * Returns a copy of the array of listeners for the event named `eventName`,
+                 * including any wrappers (such as those created by `.once()`).
+                 *
+                 * ```js
+                 * const emitter = new EventEmitter();
+                 * emitter.once('log', () => console.log('log once'));
+                 *
+                 * // Returns a new Array with a function `onceWrapper` which has a property
+                 * // `listener` which contains the original listener bound above
+                 * const listeners = emitter.rawListeners('log');
+                 * const logFnWrapper = listeners[0];
+                 *
+                 * // Logs "log once" to the console and does not unbind the `once` event
+                 * logFnWrapper.listener();
+                 *
+                 * // Logs "log once" to the console and removes the listener
+                 * logFnWrapper();
+                 *
+                 * emitter.on('log', () => console.log('log persistently'));
+                 * // Will return a new Array with a single function bound by `.on()` above
+                 * const newListeners = emitter.rawListeners('log');
+                 *
+                 * // Logs "log persistently" twice
+                 * newListeners[0]();
+                 * emitter.emit('log');
+                 * ```
+                 * @since v9.4.0
+                 */
+                rawListeners(eventName: string | symbol): Function[];
+                /**
+                 * Synchronously calls each of the listeners registered for the event named`eventName`, in the order they were registered, passing the supplied arguments
+                 * to each.
+                 *
+                 * Returns `true` if the event had listeners, `false` otherwise.
+                 *
+                 * ```js
+                 * const EventEmitter = require('events');
+                 * const myEmitter = new EventEmitter();
+                 *
+                 * // First listener
+                 * myEmitter.on('event', function firstListener() {
+                 *   console.log('Helloooo! first listener');
+                 * });
+                 * // Second listener
+                 * myEmitter.on('event', function secondListener(arg1, arg2) {
+                 *   console.log(`event with parameters ${arg1}, ${arg2} in second listener`);
+                 * });
+                 * // Third listener
+                 * myEmitter.on('event', function thirdListener(...args) {
+                 *   const parameters = args.join(', ');
+                 *   console.log(`event with parameters ${parameters} in third listener`);
+                 * });
+                 *
+                 * console.log(myEmitter.listeners('event'));
+                 *
+                 * myEmitter.emit('event', 1, 2, 3, 4, 5);
+                 *
+                 * // Prints:
+                 * // [
+                 * //   [Function: firstListener],
+                 * //   [Function: secondListener],
+                 * //   [Function: thirdListener]
+                 * // ]
+                 * // Helloooo! first listener
+                 * // event with parameters 1, 2 in second listener
+                 * // event with parameters 1, 2, 3, 4, 5 in third listener
+                 * ```
+                 * @since v0.1.26
+                 */
+                emit(eventName: string | symbol, ...args: any[]): boolean;
+                /**
+                 * Returns the number of listeners listening to the event named `eventName`.
+                 * @since v3.2.0
+                 * @param eventName The name of the event being listened for
+                 */
+                listenerCount(eventName: string | symbol): number;
+                /**
+                 * Adds the `listener` function to the _beginning_ of the listeners array for the
+                 * event named `eventName`. No checks are made to see if the `listener` has
+                 * already been added. Multiple calls passing the same combination of `eventName`and `listener` will result in the `listener` being added, and called, multiple
+                 * times.
+                 *
+                 * ```js
+                 * server.prependListener('connection', (stream) => {
+                 *   console.log('someone connected!');
+                 * });
+                 * ```
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 * @since v6.0.0
+                 * @param eventName The name of the event.
+                 * @param listener The callback function
+                 */
+                prependListener(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Adds a **one-time**`listener` function for the event named `eventName` to the _beginning_ of the listeners array. The next time `eventName` is triggered, this
+                 * listener is removed, and then invoked.
+                 *
+                 * ```js
+                 * server.prependOnceListener('connection', (stream) => {
+                 *   console.log('Ah, we have our first user!');
+                 * });
+                 * ```
+                 *
+                 * Returns a reference to the `EventEmitter`, so that calls can be chained.
+                 * @since v6.0.0
+                 * @param eventName The name of the event.
+                 * @param listener The callback function
+                 */
+                prependOnceListener(eventName: string | symbol, listener: (...args: any[]) => void): this;
+                /**
+                 * Returns an array listing the events for which the emitter has registered
+                 * listeners. The values in the array are strings or `Symbol`s.
+                 *
+                 * ```js
+                 * const EventEmitter = require('events');
+                 * const myEE = new EventEmitter();
+                 * myEE.on('foo', () => {});
+                 * myEE.on('bar', () => {});
+                 *
+                 * const sym = Symbol('symbol');
+                 * myEE.on(sym, () => {});
+                 *
+                 * console.log(myEE.eventNames());
+                 * // Prints: [ 'foo', 'bar', Symbol(symbol) ]
+                 * ```
+                 * @since v6.0.0
+                 */
+                eventNames(): Array<string | symbol>;
+            }
+        }
+    }
+    export = EventEmitter;
+}
+declare module 'node:events' {
+    import events = require('events');
+    export = events;
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/fs.d.ts b/igv_component/node_modules/@types/node/ts4.8/fs.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..75c53fb0d542e5f7ce5b43c68982e428a6e653aa
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/fs.d.ts
@@ -0,0 +1,3872 @@
+/**
+ * The `fs` module enables interacting with the file system in a
+ * way modeled on standard POSIX functions.
+ *
+ * To use the promise-based APIs:
+ *
+ * ```js
+ * import * as fs from 'fs/promises';
+ * ```
+ *
+ * To use the callback and sync APIs:
+ *
+ * ```js
+ * import * as fs from 'fs';
+ * ```
+ *
+ * All file system operations have synchronous, callback, and promise-based
+ * forms, and are accessible using both CommonJS syntax and ES6 Modules (ESM).
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/fs.js)
+ */
+declare module 'fs' {
+    import * as stream from 'node:stream';
+    import { Abortable, EventEmitter } from 'node:events';
+    import { URL } from 'node:url';
+    import * as promises from 'node:fs/promises';
+    export { promises };
+    /**
+     * Valid types for path values in "fs".
+     */
+    export type PathLike = string | Buffer | URL;
+    export type PathOrFileDescriptor = PathLike | number;
+    export type TimeLike = string | number | Date;
+    export type NoParamCallback = (err: NodeJS.ErrnoException | null) => void;
+    export type BufferEncodingOption =
+        | 'buffer'
+        | {
+              encoding: 'buffer';
+          };
+    export interface ObjectEncodingOptions {
+        encoding?: BufferEncoding | null | undefined;
+    }
+    export type EncodingOption = ObjectEncodingOptions | BufferEncoding | undefined | null;
+    export type OpenMode = number | string;
+    export type Mode = number | string;
+    export interface StatsBase<T> {
+        isFile(): boolean;
+        isDirectory(): boolean;
+        isBlockDevice(): boolean;
+        isCharacterDevice(): boolean;
+        isSymbolicLink(): boolean;
+        isFIFO(): boolean;
+        isSocket(): boolean;
+        dev: T;
+        ino: T;
+        mode: T;
+        nlink: T;
+        uid: T;
+        gid: T;
+        rdev: T;
+        size: T;
+        blksize: T;
+        blocks: T;
+        atimeMs: T;
+        mtimeMs: T;
+        ctimeMs: T;
+        birthtimeMs: T;
+        atime: Date;
+        mtime: Date;
+        ctime: Date;
+        birthtime: Date;
+    }
+    export interface Stats extends StatsBase<number> {}
+    /**
+     * A `fs.Stats` object provides information about a file.
+     *
+     * Objects returned from {@link stat}, {@link lstat} and {@link fstat} and
+     * their synchronous counterparts are of this type.
+     * If `bigint` in the `options` passed to those methods is true, the numeric values
+     * will be `bigint` instead of `number`, and the object will contain additional
+     * nanosecond-precision properties suffixed with `Ns`.
+     *
+     * ```console
+     * Stats {
+     *   dev: 2114,
+     *   ino: 48064969,
+     *   mode: 33188,
+     *   nlink: 1,
+     *   uid: 85,
+     *   gid: 100,
+     *   rdev: 0,
+     *   size: 527,
+     *   blksize: 4096,
+     *   blocks: 8,
+     *   atimeMs: 1318289051000.1,
+     *   mtimeMs: 1318289051000.1,
+     *   ctimeMs: 1318289051000.1,
+     *   birthtimeMs: 1318289051000.1,
+     *   atime: Mon, 10 Oct 2011 23:24:11 GMT,
+     *   mtime: Mon, 10 Oct 2011 23:24:11 GMT,
+     *   ctime: Mon, 10 Oct 2011 23:24:11 GMT,
+     *   birthtime: Mon, 10 Oct 2011 23:24:11 GMT }
+     * ```
+     *
+     * `bigint` version:
+     *
+     * ```console
+     * BigIntStats {
+     *   dev: 2114n,
+     *   ino: 48064969n,
+     *   mode: 33188n,
+     *   nlink: 1n,
+     *   uid: 85n,
+     *   gid: 100n,
+     *   rdev: 0n,
+     *   size: 527n,
+     *   blksize: 4096n,
+     *   blocks: 8n,
+     *   atimeMs: 1318289051000n,
+     *   mtimeMs: 1318289051000n,
+     *   ctimeMs: 1318289051000n,
+     *   birthtimeMs: 1318289051000n,
+     *   atimeNs: 1318289051000000000n,
+     *   mtimeNs: 1318289051000000000n,
+     *   ctimeNs: 1318289051000000000n,
+     *   birthtimeNs: 1318289051000000000n,
+     *   atime: Mon, 10 Oct 2011 23:24:11 GMT,
+     *   mtime: Mon, 10 Oct 2011 23:24:11 GMT,
+     *   ctime: Mon, 10 Oct 2011 23:24:11 GMT,
+     *   birthtime: Mon, 10 Oct 2011 23:24:11 GMT }
+     * ```
+     * @since v0.1.21
+     */
+    export class Stats {}
+    /**
+     * A representation of a directory entry, which can be a file or a subdirectory
+     * within the directory, as returned by reading from an `fs.Dir`. The
+     * directory entry is a combination of the file name and file type pairs.
+     *
+     * Additionally, when {@link readdir} or {@link readdirSync} is called with
+     * the `withFileTypes` option set to `true`, the resulting array is filled with `fs.Dirent` objects, rather than strings or `Buffer` s.
+     * @since v10.10.0
+     */
+    export class Dirent {
+        /**
+         * Returns `true` if the `fs.Dirent` object describes a regular file.
+         * @since v10.10.0
+         */
+        isFile(): boolean;
+        /**
+         * Returns `true` if the `fs.Dirent` object describes a file system
+         * directory.
+         * @since v10.10.0
+         */
+        isDirectory(): boolean;
+        /**
+         * Returns `true` if the `fs.Dirent` object describes a block device.
+         * @since v10.10.0
+         */
+        isBlockDevice(): boolean;
+        /**
+         * Returns `true` if the `fs.Dirent` object describes a character device.
+         * @since v10.10.0
+         */
+        isCharacterDevice(): boolean;
+        /**
+         * Returns `true` if the `fs.Dirent` object describes a symbolic link.
+         * @since v10.10.0
+         */
+        isSymbolicLink(): boolean;
+        /**
+         * Returns `true` if the `fs.Dirent` object describes a first-in-first-out
+         * (FIFO) pipe.
+         * @since v10.10.0
+         */
+        isFIFO(): boolean;
+        /**
+         * Returns `true` if the `fs.Dirent` object describes a socket.
+         * @since v10.10.0
+         */
+        isSocket(): boolean;
+        /**
+         * The file name that this `fs.Dirent` object refers to. The type of this
+         * value is determined by the `options.encoding` passed to {@link readdir} or {@link readdirSync}.
+         * @since v10.10.0
+         */
+        name: string;
+    }
+    /**
+     * A class representing a directory stream.
+     *
+     * Created by {@link opendir}, {@link opendirSync}, or `fsPromises.opendir()`.
+     *
+     * ```js
+     * import { opendir } from 'fs/promises';
+     *
+     * try {
+     *   const dir = await opendir('./');
+     *   for await (const dirent of dir)
+     *     console.log(dirent.name);
+     * } catch (err) {
+     *   console.error(err);
+     * }
+     * ```
+     *
+     * When using the async iterator, the `fs.Dir` object will be automatically
+     * closed after the iterator exits.
+     * @since v12.12.0
+     */
+    export class Dir implements AsyncIterable<Dirent> {
+        /**
+         * The read-only path of this directory as was provided to {@link opendir},{@link opendirSync}, or `fsPromises.opendir()`.
+         * @since v12.12.0
+         */
+        readonly path: string;
+        /**
+         * Asynchronously iterates over the directory via `readdir(3)` until all entries have been read.
+         */
+        [Symbol.asyncIterator](): AsyncIterableIterator<Dirent>;
+        /**
+         * Asynchronously close the directory's underlying resource handle.
+         * Subsequent reads will result in errors.
+         *
+         * A promise is returned that will be resolved after the resource has been
+         * closed.
+         * @since v12.12.0
+         */
+        close(): Promise<void>;
+        close(cb: NoParamCallback): void;
+        /**
+         * Synchronously close the directory's underlying resource handle.
+         * Subsequent reads will result in errors.
+         * @since v12.12.0
+         */
+        closeSync(): void;
+        /**
+         * Asynchronously read the next directory entry via [`readdir(3)`](http://man7.org/linux/man-pages/man3/readdir.3.html) as an `fs.Dirent`.
+         *
+         * A promise is returned that will be resolved with an `fs.Dirent`, or `null`if there are no more directory entries to read.
+         *
+         * Directory entries returned by this function are in no particular order as
+         * provided by the operating system's underlying directory mechanisms.
+         * Entries added or removed while iterating over the directory might not be
+         * included in the iteration results.
+         * @since v12.12.0
+         * @return containing {fs.Dirent|null}
+         */
+        read(): Promise<Dirent | null>;
+        read(cb: (err: NodeJS.ErrnoException | null, dirEnt: Dirent | null) => void): void;
+        /**
+         * Synchronously read the next directory entry as an `fs.Dirent`. See the
+         * POSIX [`readdir(3)`](http://man7.org/linux/man-pages/man3/readdir.3.html) documentation for more detail.
+         *
+         * If there are no more directory entries to read, `null` will be returned.
+         *
+         * Directory entries returned by this function are in no particular order as
+         * provided by the operating system's underlying directory mechanisms.
+         * Entries added or removed while iterating over the directory might not be
+         * included in the iteration results.
+         * @since v12.12.0
+         */
+        readSync(): Dirent | null;
+    }
+    /**
+     * Class: fs.StatWatcher
+     * @since v14.3.0, v12.20.0
+     * Extends `EventEmitter`
+     * A successful call to {@link watchFile} method will return a new fs.StatWatcher object.
+     */
+    export interface StatWatcher extends EventEmitter {
+        /**
+         * When called, requests that the Node.js event loop _not_ exit so long as the `fs.StatWatcher` is active. Calling `watcher.ref()` multiple times will have
+         * no effect.
+         *
+         * By default, all `fs.StatWatcher` objects are "ref'ed", making it normally
+         * unnecessary to call `watcher.ref()` unless `watcher.unref()` had been
+         * called previously.
+         * @since v14.3.0, v12.20.0
+         */
+        ref(): this;
+        /**
+         * When called, the active `fs.StatWatcher` object will not require the Node.js
+         * event loop to remain active. If there is no other activity keeping the
+         * event loop running, the process may exit before the `fs.StatWatcher` object's
+         * callback is invoked. Calling `watcher.unref()` multiple times will have
+         * no effect.
+         * @since v14.3.0, v12.20.0
+         */
+        unref(): this;
+    }
+    export interface FSWatcher extends EventEmitter {
+        /**
+         * Stop watching for changes on the given `fs.FSWatcher`. Once stopped, the `fs.FSWatcher` object is no longer usable.
+         * @since v0.5.8
+         */
+        close(): void;
+        /**
+         * events.EventEmitter
+         *   1. change
+         *   2. error
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'change', listener: (eventType: string, filename: string | Buffer) => void): this;
+        addListener(event: 'error', listener: (error: Error) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'change', listener: (eventType: string, filename: string | Buffer) => void): this;
+        on(event: 'error', listener: (error: Error) => void): this;
+        on(event: 'close', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'change', listener: (eventType: string, filename: string | Buffer) => void): this;
+        once(event: 'error', listener: (error: Error) => void): this;
+        once(event: 'close', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'change', listener: (eventType: string, filename: string | Buffer) => void): this;
+        prependListener(event: 'error', listener: (error: Error) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'change', listener: (eventType: string, filename: string | Buffer) => void): this;
+        prependOnceListener(event: 'error', listener: (error: Error) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+    }
+    /**
+     * Instances of `fs.ReadStream` are created and returned using the {@link createReadStream} function.
+     * @since v0.1.93
+     */
+    export class ReadStream extends stream.Readable {
+        close(callback?: (err?: NodeJS.ErrnoException | null) => void): void;
+        /**
+         * The number of bytes that have been read so far.
+         * @since v6.4.0
+         */
+        bytesRead: number;
+        /**
+         * The path to the file the stream is reading from as specified in the first
+         * argument to `fs.createReadStream()`. If `path` is passed as a string, then`readStream.path` will be a string. If `path` is passed as a `Buffer`, then`readStream.path` will be a
+         * `Buffer`. If `fd` is specified, then`readStream.path` will be `undefined`.
+         * @since v0.1.93
+         */
+        path: string | Buffer;
+        /**
+         * This property is `true` if the underlying file has not been opened yet,
+         * i.e. before the `'ready'` event is emitted.
+         * @since v11.2.0, v10.16.0
+         */
+        pending: boolean;
+        /**
+         * events.EventEmitter
+         *   1. open
+         *   2. close
+         *   3. ready
+         */
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        addListener(event: 'end', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'open', listener: (fd: number) => void): this;
+        addListener(event: 'pause', listener: () => void): this;
+        addListener(event: 'readable', listener: () => void): this;
+        addListener(event: 'ready', listener: () => void): this;
+        addListener(event: 'resume', listener: () => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        on(event: 'end', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'open', listener: (fd: number) => void): this;
+        on(event: 'pause', listener: () => void): this;
+        on(event: 'readable', listener: () => void): this;
+        on(event: 'ready', listener: () => void): this;
+        on(event: 'resume', listener: () => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        once(event: 'end', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'open', listener: (fd: number) => void): this;
+        once(event: 'pause', listener: () => void): this;
+        once(event: 'readable', listener: () => void): this;
+        once(event: 'ready', listener: () => void): this;
+        once(event: 'resume', listener: () => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        prependListener(event: 'end', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'open', listener: (fd: number) => void): this;
+        prependListener(event: 'pause', listener: () => void): this;
+        prependListener(event: 'readable', listener: () => void): this;
+        prependListener(event: 'ready', listener: () => void): this;
+        prependListener(event: 'resume', listener: () => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        prependOnceListener(event: 'end', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'open', listener: (fd: number) => void): this;
+        prependOnceListener(event: 'pause', listener: () => void): this;
+        prependOnceListener(event: 'readable', listener: () => void): this;
+        prependOnceListener(event: 'ready', listener: () => void): this;
+        prependOnceListener(event: 'resume', listener: () => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    /**
+     * * Extends `stream.Writable`
+     *
+     * Instances of `fs.WriteStream` are created and returned using the {@link createWriteStream} function.
+     * @since v0.1.93
+     */
+    export class WriteStream extends stream.Writable {
+        /**
+         * Closes `writeStream`. Optionally accepts a
+         * callback that will be executed once the `writeStream`is closed.
+         * @since v0.9.4
+         */
+        close(callback?: (err?: NodeJS.ErrnoException | null) => void): void;
+        /**
+         * The number of bytes written so far. Does not include data that is still queued
+         * for writing.
+         * @since v0.4.7
+         */
+        bytesWritten: number;
+        /**
+         * The path to the file the stream is writing to as specified in the first
+         * argument to {@link createWriteStream}. If `path` is passed as a string, then`writeStream.path` will be a string. If `path` is passed as a `Buffer`, then`writeStream.path` will be a
+         * `Buffer`.
+         * @since v0.1.93
+         */
+        path: string | Buffer;
+        /**
+         * This property is `true` if the underlying file has not been opened yet,
+         * i.e. before the `'ready'` event is emitted.
+         * @since v11.2.0
+         */
+        pending: boolean;
+        /**
+         * events.EventEmitter
+         *   1. open
+         *   2. close
+         *   3. ready
+         */
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'drain', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'finish', listener: () => void): this;
+        addListener(event: 'open', listener: (fd: number) => void): this;
+        addListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        addListener(event: 'ready', listener: () => void): this;
+        addListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'drain', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'finish', listener: () => void): this;
+        on(event: 'open', listener: (fd: number) => void): this;
+        on(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        on(event: 'ready', listener: () => void): this;
+        on(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'drain', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'finish', listener: () => void): this;
+        once(event: 'open', listener: (fd: number) => void): this;
+        once(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        once(event: 'ready', listener: () => void): this;
+        once(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'drain', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'finish', listener: () => void): this;
+        prependListener(event: 'open', listener: (fd: number) => void): this;
+        prependListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        prependListener(event: 'ready', listener: () => void): this;
+        prependListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'drain', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'finish', listener: () => void): this;
+        prependOnceListener(event: 'open', listener: (fd: number) => void): this;
+        prependOnceListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        prependOnceListener(event: 'ready', listener: () => void): this;
+        prependOnceListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    /**
+     * Asynchronously rename file at `oldPath` to the pathname provided
+     * as `newPath`. In the case that `newPath` already exists, it will
+     * be overwritten. If there is a directory at `newPath`, an error will
+     * be raised instead. No arguments other than a possible exception are
+     * given to the completion callback.
+     *
+     * See also: [`rename(2)`](http://man7.org/linux/man-pages/man2/rename.2.html).
+     *
+     * ```js
+     * import { rename } from 'fs';
+     *
+     * rename('oldFile.txt', 'newFile.txt', (err) => {
+     *   if (err) throw err;
+     *   console.log('Rename complete!');
+     * });
+     * ```
+     * @since v0.0.2
+     */
+    export function rename(oldPath: PathLike, newPath: PathLike, callback: NoParamCallback): void;
+    export namespace rename {
+        /**
+         * Asynchronous rename(2) - Change the name or location of a file or directory.
+         * @param oldPath A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * URL support is _experimental_.
+         * @param newPath A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * URL support is _experimental_.
+         */
+        function __promisify__(oldPath: PathLike, newPath: PathLike): Promise<void>;
+    }
+    /**
+     * Renames the file from `oldPath` to `newPath`. Returns `undefined`.
+     *
+     * See the POSIX [`rename(2)`](http://man7.org/linux/man-pages/man2/rename.2.html) documentation for more details.
+     * @since v0.1.21
+     */
+    export function renameSync(oldPath: PathLike, newPath: PathLike): void;
+    /**
+     * Truncates the file. No arguments other than a possible exception are
+     * given to the completion callback. A file descriptor can also be passed as the
+     * first argument. In this case, `fs.ftruncate()` is called.
+     *
+     * ```js
+     * import { truncate } from 'fs';
+     * // Assuming that 'path/file.txt' is a regular file.
+     * truncate('path/file.txt', (err) => {
+     *   if (err) throw err;
+     *   console.log('path/file.txt was truncated');
+     * });
+     * ```
+     *
+     * Passing a file descriptor is deprecated and may result in an error being thrown
+     * in the future.
+     *
+     * See the POSIX [`truncate(2)`](http://man7.org/linux/man-pages/man2/truncate.2.html) documentation for more details.
+     * @since v0.8.6
+     * @param [len=0]
+     */
+    export function truncate(path: PathLike, len: number | undefined | null, callback: NoParamCallback): void;
+    /**
+     * Asynchronous truncate(2) - Truncate a file to a specified length.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function truncate(path: PathLike, callback: NoParamCallback): void;
+    export namespace truncate {
+        /**
+         * Asynchronous truncate(2) - Truncate a file to a specified length.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param len If not specified, defaults to `0`.
+         */
+        function __promisify__(path: PathLike, len?: number | null): Promise<void>;
+    }
+    /**
+     * Truncates the file. Returns `undefined`. A file descriptor can also be
+     * passed as the first argument. In this case, `fs.ftruncateSync()` is called.
+     *
+     * Passing a file descriptor is deprecated and may result in an error being thrown
+     * in the future.
+     * @since v0.8.6
+     * @param [len=0]
+     */
+    export function truncateSync(path: PathLike, len?: number | null): void;
+    /**
+     * Truncates the file descriptor. No arguments other than a possible exception are
+     * given to the completion callback.
+     *
+     * See the POSIX [`ftruncate(2)`](http://man7.org/linux/man-pages/man2/ftruncate.2.html) documentation for more detail.
+     *
+     * If the file referred to by the file descriptor was larger than `len` bytes, only
+     * the first `len` bytes will be retained in the file.
+     *
+     * For example, the following program retains only the first four bytes of the
+     * file:
+     *
+     * ```js
+     * import { open, close, ftruncate } from 'fs';
+     *
+     * function closeFd(fd) {
+     *   close(fd, (err) => {
+     *     if (err) throw err;
+     *   });
+     * }
+     *
+     * open('temp.txt', 'r+', (err, fd) => {
+     *   if (err) throw err;
+     *
+     *   try {
+     *     ftruncate(fd, 4, (err) => {
+     *       closeFd(fd);
+     *       if (err) throw err;
+     *     });
+     *   } catch (err) {
+     *     closeFd(fd);
+     *     if (err) throw err;
+     *   }
+     * });
+     * ```
+     *
+     * If the file previously was shorter than `len` bytes, it is extended, and the
+     * extended part is filled with null bytes (`'\0'`):
+     *
+     * If `len` is negative then `0` will be used.
+     * @since v0.8.6
+     * @param [len=0]
+     */
+    export function ftruncate(fd: number, len: number | undefined | null, callback: NoParamCallback): void;
+    /**
+     * Asynchronous ftruncate(2) - Truncate a file to a specified length.
+     * @param fd A file descriptor.
+     */
+    export function ftruncate(fd: number, callback: NoParamCallback): void;
+    export namespace ftruncate {
+        /**
+         * Asynchronous ftruncate(2) - Truncate a file to a specified length.
+         * @param fd A file descriptor.
+         * @param len If not specified, defaults to `0`.
+         */
+        function __promisify__(fd: number, len?: number | null): Promise<void>;
+    }
+    /**
+     * Truncates the file descriptor. Returns `undefined`.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link ftruncate}.
+     * @since v0.8.6
+     * @param [len=0]
+     */
+    export function ftruncateSync(fd: number, len?: number | null): void;
+    /**
+     * Asynchronously changes owner and group of a file. No arguments other than a
+     * possible exception are given to the completion callback.
+     *
+     * See the POSIX [`chown(2)`](http://man7.org/linux/man-pages/man2/chown.2.html) documentation for more detail.
+     * @since v0.1.97
+     */
+    export function chown(path: PathLike, uid: number, gid: number, callback: NoParamCallback): void;
+    export namespace chown {
+        /**
+         * Asynchronous chown(2) - Change ownership of a file.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         */
+        function __promisify__(path: PathLike, uid: number, gid: number): Promise<void>;
+    }
+    /**
+     * Synchronously changes owner and group of a file. Returns `undefined`.
+     * This is the synchronous version of {@link chown}.
+     *
+     * See the POSIX [`chown(2)`](http://man7.org/linux/man-pages/man2/chown.2.html) documentation for more detail.
+     * @since v0.1.97
+     */
+    export function chownSync(path: PathLike, uid: number, gid: number): void;
+    /**
+     * Sets the owner of the file. No arguments other than a possible exception are
+     * given to the completion callback.
+     *
+     * See the POSIX [`fchown(2)`](http://man7.org/linux/man-pages/man2/fchown.2.html) documentation for more detail.
+     * @since v0.4.7
+     */
+    export function fchown(fd: number, uid: number, gid: number, callback: NoParamCallback): void;
+    export namespace fchown {
+        /**
+         * Asynchronous fchown(2) - Change ownership of a file.
+         * @param fd A file descriptor.
+         */
+        function __promisify__(fd: number, uid: number, gid: number): Promise<void>;
+    }
+    /**
+     * Sets the owner of the file. Returns `undefined`.
+     *
+     * See the POSIX [`fchown(2)`](http://man7.org/linux/man-pages/man2/fchown.2.html) documentation for more detail.
+     * @since v0.4.7
+     * @param uid The file's new owner's user id.
+     * @param gid The file's new group's group id.
+     */
+    export function fchownSync(fd: number, uid: number, gid: number): void;
+    /**
+     * Set the owner of the symbolic link. No arguments other than a possible
+     * exception are given to the completion callback.
+     *
+     * See the POSIX [`lchown(2)`](http://man7.org/linux/man-pages/man2/lchown.2.html) documentation for more detail.
+     */
+    export function lchown(path: PathLike, uid: number, gid: number, callback: NoParamCallback): void;
+    export namespace lchown {
+        /**
+         * Asynchronous lchown(2) - Change ownership of a file. Does not dereference symbolic links.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         */
+        function __promisify__(path: PathLike, uid: number, gid: number): Promise<void>;
+    }
+    /**
+     * Set the owner for the path. Returns `undefined`.
+     *
+     * See the POSIX [`lchown(2)`](http://man7.org/linux/man-pages/man2/lchown.2.html) documentation for more details.
+     * @param uid The file's new owner's user id.
+     * @param gid The file's new group's group id.
+     */
+    export function lchownSync(path: PathLike, uid: number, gid: number): void;
+    /**
+     * Changes the access and modification times of a file in the same way as {@link utimes}, with the difference that if the path refers to a symbolic
+     * link, then the link is not dereferenced: instead, the timestamps of the
+     * symbolic link itself are changed.
+     *
+     * No arguments other than a possible exception are given to the completion
+     * callback.
+     * @since v14.5.0, v12.19.0
+     */
+    export function lutimes(path: PathLike, atime: TimeLike, mtime: TimeLike, callback: NoParamCallback): void;
+    export namespace lutimes {
+        /**
+         * Changes the access and modification times of a file in the same way as `fsPromises.utimes()`,
+         * with the difference that if the path refers to a symbolic link, then the link is not
+         * dereferenced: instead, the timestamps of the symbolic link itself are changed.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param atime The last access time. If a string is provided, it will be coerced to number.
+         * @param mtime The last modified time. If a string is provided, it will be coerced to number.
+         */
+        function __promisify__(path: PathLike, atime: TimeLike, mtime: TimeLike): Promise<void>;
+    }
+    /**
+     * Change the file system timestamps of the symbolic link referenced by `path`.
+     * Returns `undefined`, or throws an exception when parameters are incorrect or
+     * the operation fails. This is the synchronous version of {@link lutimes}.
+     * @since v14.5.0, v12.19.0
+     */
+    export function lutimesSync(path: PathLike, atime: TimeLike, mtime: TimeLike): void;
+    /**
+     * Asynchronously changes the permissions of a file. No arguments other than a
+     * possible exception are given to the completion callback.
+     *
+     * See the POSIX [`chmod(2)`](http://man7.org/linux/man-pages/man2/chmod.2.html) documentation for more detail.
+     *
+     * ```js
+     * import { chmod } from 'fs';
+     *
+     * chmod('my_file.txt', 0o775, (err) => {
+     *   if (err) throw err;
+     *   console.log('The permissions for file "my_file.txt" have been changed!');
+     * });
+     * ```
+     * @since v0.1.30
+     */
+    export function chmod(path: PathLike, mode: Mode, callback: NoParamCallback): void;
+    export namespace chmod {
+        /**
+         * Asynchronous chmod(2) - Change permissions of a file.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param mode A file mode. If a string is passed, it is parsed as an octal integer.
+         */
+        function __promisify__(path: PathLike, mode: Mode): Promise<void>;
+    }
+    /**
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link chmod}.
+     *
+     * See the POSIX [`chmod(2)`](http://man7.org/linux/man-pages/man2/chmod.2.html) documentation for more detail.
+     * @since v0.6.7
+     */
+    export function chmodSync(path: PathLike, mode: Mode): void;
+    /**
+     * Sets the permissions on the file. No arguments other than a possible exception
+     * are given to the completion callback.
+     *
+     * See the POSIX [`fchmod(2)`](http://man7.org/linux/man-pages/man2/fchmod.2.html) documentation for more detail.
+     * @since v0.4.7
+     */
+    export function fchmod(fd: number, mode: Mode, callback: NoParamCallback): void;
+    export namespace fchmod {
+        /**
+         * Asynchronous fchmod(2) - Change permissions of a file.
+         * @param fd A file descriptor.
+         * @param mode A file mode. If a string is passed, it is parsed as an octal integer.
+         */
+        function __promisify__(fd: number, mode: Mode): Promise<void>;
+    }
+    /**
+     * Sets the permissions on the file. Returns `undefined`.
+     *
+     * See the POSIX [`fchmod(2)`](http://man7.org/linux/man-pages/man2/fchmod.2.html) documentation for more detail.
+     * @since v0.4.7
+     */
+    export function fchmodSync(fd: number, mode: Mode): void;
+    /**
+     * Changes the permissions on a symbolic link. No arguments other than a possible
+     * exception are given to the completion callback.
+     *
+     * This method is only implemented on macOS.
+     *
+     * See the POSIX [`lchmod(2)`](https://www.freebsd.org/cgi/man.cgi?query=lchmod&sektion=2) documentation for more detail.
+     * @deprecated Since v0.4.7
+     */
+    export function lchmod(path: PathLike, mode: Mode, callback: NoParamCallback): void;
+    /** @deprecated */
+    export namespace lchmod {
+        /**
+         * Asynchronous lchmod(2) - Change permissions of a file. Does not dereference symbolic links.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param mode A file mode. If a string is passed, it is parsed as an octal integer.
+         */
+        function __promisify__(path: PathLike, mode: Mode): Promise<void>;
+    }
+    /**
+     * Changes the permissions on a symbolic link. Returns `undefined`.
+     *
+     * This method is only implemented on macOS.
+     *
+     * See the POSIX [`lchmod(2)`](https://www.freebsd.org/cgi/man.cgi?query=lchmod&sektion=2) documentation for more detail.
+     * @deprecated Since v0.4.7
+     */
+    export function lchmodSync(path: PathLike, mode: Mode): void;
+    /**
+     * Asynchronous [`stat(2)`](http://man7.org/linux/man-pages/man2/stat.2.html). The callback gets two arguments `(err, stats)` where`stats` is an `fs.Stats` object.
+     *
+     * In case of an error, the `err.code` will be one of `Common System Errors`.
+     *
+     * Using `fs.stat()` to check for the existence of a file before calling`fs.open()`, `fs.readFile()` or `fs.writeFile()` is not recommended.
+     * Instead, user code should open/read/write the file directly and handle the
+     * error raised if the file is not available.
+     *
+     * To check if a file exists without manipulating it afterwards, {@link access} is recommended.
+     *
+     * For example, given the following directory structure:
+     *
+     * ```text
+     * - txtDir
+     * -- file.txt
+     * - app.js
+     * ```
+     *
+     * The next program will check for the stats of the given paths:
+     *
+     * ```js
+     * import { stat } from 'fs';
+     *
+     * const pathsToCheck = ['./txtDir', './txtDir/file.txt'];
+     *
+     * for (let i = 0; i < pathsToCheck.length; i++) {
+     *   stat(pathsToCheck[i], (err, stats) => {
+     *     console.log(stats.isDirectory());
+     *     console.log(stats);
+     *   });
+     * }
+     * ```
+     *
+     * The resulting output will resemble:
+     *
+     * ```console
+     * true
+     * Stats {
+     *   dev: 16777220,
+     *   mode: 16877,
+     *   nlink: 3,
+     *   uid: 501,
+     *   gid: 20,
+     *   rdev: 0,
+     *   blksize: 4096,
+     *   ino: 14214262,
+     *   size: 96,
+     *   blocks: 0,
+     *   atimeMs: 1561174653071.963,
+     *   mtimeMs: 1561174614583.3518,
+     *   ctimeMs: 1561174626623.5366,
+     *   birthtimeMs: 1561174126937.2893,
+     *   atime: 2019-06-22T03:37:33.072Z,
+     *   mtime: 2019-06-22T03:36:54.583Z,
+     *   ctime: 2019-06-22T03:37:06.624Z,
+     *   birthtime: 2019-06-22T03:28:46.937Z
+     * }
+     * false
+     * Stats {
+     *   dev: 16777220,
+     *   mode: 33188,
+     *   nlink: 1,
+     *   uid: 501,
+     *   gid: 20,
+     *   rdev: 0,
+     *   blksize: 4096,
+     *   ino: 14214074,
+     *   size: 8,
+     *   blocks: 8,
+     *   atimeMs: 1561174616618.8555,
+     *   mtimeMs: 1561174614584,
+     *   ctimeMs: 1561174614583.8145,
+     *   birthtimeMs: 1561174007710.7478,
+     *   atime: 2019-06-22T03:36:56.619Z,
+     *   mtime: 2019-06-22T03:36:54.584Z,
+     *   ctime: 2019-06-22T03:36:54.584Z,
+     *   birthtime: 2019-06-22T03:26:47.711Z
+     * }
+     * ```
+     * @since v0.0.2
+     */
+    export function stat(path: PathLike, callback: (err: NodeJS.ErrnoException | null, stats: Stats) => void): void;
+    export function stat(
+        path: PathLike,
+        options:
+            | (StatOptions & {
+                  bigint?: false | undefined;
+              })
+            | undefined,
+        callback: (err: NodeJS.ErrnoException | null, stats: Stats) => void
+    ): void;
+    export function stat(
+        path: PathLike,
+        options: StatOptions & {
+            bigint: true;
+        },
+        callback: (err: NodeJS.ErrnoException | null, stats: BigIntStats) => void
+    ): void;
+    export function stat(path: PathLike, options: StatOptions | undefined, callback: (err: NodeJS.ErrnoException | null, stats: Stats | BigIntStats) => void): void;
+    export namespace stat {
+        /**
+         * Asynchronous stat(2) - Get file status.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         */
+        function __promisify__(
+            path: PathLike,
+            options?: StatOptions & {
+                bigint?: false | undefined;
+            }
+        ): Promise<Stats>;
+        function __promisify__(
+            path: PathLike,
+            options: StatOptions & {
+                bigint: true;
+            }
+        ): Promise<BigIntStats>;
+        function __promisify__(path: PathLike, options?: StatOptions): Promise<Stats | BigIntStats>;
+    }
+    export interface StatSyncFn extends Function {
+        (path: PathLike, options?: undefined): Stats;
+        (
+            path: PathLike,
+            options?: StatSyncOptions & {
+                bigint?: false | undefined;
+                throwIfNoEntry: false;
+            }
+        ): Stats | undefined;
+        (
+            path: PathLike,
+            options: StatSyncOptions & {
+                bigint: true;
+                throwIfNoEntry: false;
+            }
+        ): BigIntStats | undefined;
+        (
+            path: PathLike,
+            options?: StatSyncOptions & {
+                bigint?: false | undefined;
+            }
+        ): Stats;
+        (
+            path: PathLike,
+            options: StatSyncOptions & {
+                bigint: true;
+            }
+        ): BigIntStats;
+        (
+            path: PathLike,
+            options: StatSyncOptions & {
+                bigint: boolean;
+                throwIfNoEntry?: false | undefined;
+            }
+        ): Stats | BigIntStats;
+        (path: PathLike, options?: StatSyncOptions): Stats | BigIntStats | undefined;
+    }
+    /**
+     * Synchronous stat(2) - Get file status.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     */
+    export const statSync: StatSyncFn;
+    /**
+     * Invokes the callback with the `fs.Stats` for the file descriptor.
+     *
+     * See the POSIX [`fstat(2)`](http://man7.org/linux/man-pages/man2/fstat.2.html) documentation for more detail.
+     * @since v0.1.95
+     */
+    export function fstat(fd: number, callback: (err: NodeJS.ErrnoException | null, stats: Stats) => void): void;
+    export function fstat(
+        fd: number,
+        options:
+            | (StatOptions & {
+                  bigint?: false | undefined;
+              })
+            | undefined,
+        callback: (err: NodeJS.ErrnoException | null, stats: Stats) => void
+    ): void;
+    export function fstat(
+        fd: number,
+        options: StatOptions & {
+            bigint: true;
+        },
+        callback: (err: NodeJS.ErrnoException | null, stats: BigIntStats) => void
+    ): void;
+    export function fstat(fd: number, options: StatOptions | undefined, callback: (err: NodeJS.ErrnoException | null, stats: Stats | BigIntStats) => void): void;
+    export namespace fstat {
+        /**
+         * Asynchronous fstat(2) - Get file status.
+         * @param fd A file descriptor.
+         */
+        function __promisify__(
+            fd: number,
+            options?: StatOptions & {
+                bigint?: false | undefined;
+            }
+        ): Promise<Stats>;
+        function __promisify__(
+            fd: number,
+            options: StatOptions & {
+                bigint: true;
+            }
+        ): Promise<BigIntStats>;
+        function __promisify__(fd: number, options?: StatOptions): Promise<Stats | BigIntStats>;
+    }
+    /**
+     * Retrieves the `fs.Stats` for the file descriptor.
+     *
+     * See the POSIX [`fstat(2)`](http://man7.org/linux/man-pages/man2/fstat.2.html) documentation for more detail.
+     * @since v0.1.95
+     */
+    export function fstatSync(
+        fd: number,
+        options?: StatOptions & {
+            bigint?: false | undefined;
+        }
+    ): Stats;
+    export function fstatSync(
+        fd: number,
+        options: StatOptions & {
+            bigint: true;
+        }
+    ): BigIntStats;
+    export function fstatSync(fd: number, options?: StatOptions): Stats | BigIntStats;
+    /**
+     * Retrieves the `fs.Stats` for the symbolic link referred to by the path.
+     * The callback gets two arguments `(err, stats)` where `stats` is a `fs.Stats` object. `lstat()` is identical to `stat()`, except that if `path` is a symbolic
+     * link, then the link itself is stat-ed, not the file that it refers to.
+     *
+     * See the POSIX [`lstat(2)`](http://man7.org/linux/man-pages/man2/lstat.2.html) documentation for more details.
+     * @since v0.1.30
+     */
+    export function lstat(path: PathLike, callback: (err: NodeJS.ErrnoException | null, stats: Stats) => void): void;
+    export function lstat(
+        path: PathLike,
+        options:
+            | (StatOptions & {
+                  bigint?: false | undefined;
+              })
+            | undefined,
+        callback: (err: NodeJS.ErrnoException | null, stats: Stats) => void
+    ): void;
+    export function lstat(
+        path: PathLike,
+        options: StatOptions & {
+            bigint: true;
+        },
+        callback: (err: NodeJS.ErrnoException | null, stats: BigIntStats) => void
+    ): void;
+    export function lstat(path: PathLike, options: StatOptions | undefined, callback: (err: NodeJS.ErrnoException | null, stats: Stats | BigIntStats) => void): void;
+    export namespace lstat {
+        /**
+         * Asynchronous lstat(2) - Get file status. Does not dereference symbolic links.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         */
+        function __promisify__(
+            path: PathLike,
+            options?: StatOptions & {
+                bigint?: false | undefined;
+            }
+        ): Promise<Stats>;
+        function __promisify__(
+            path: PathLike,
+            options: StatOptions & {
+                bigint: true;
+            }
+        ): Promise<BigIntStats>;
+        function __promisify__(path: PathLike, options?: StatOptions): Promise<Stats | BigIntStats>;
+    }
+    /**
+     * Synchronous lstat(2) - Get file status. Does not dereference symbolic links.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     */
+    export const lstatSync: StatSyncFn;
+    /**
+     * Creates a new link from the `existingPath` to the `newPath`. See the POSIX [`link(2)`](http://man7.org/linux/man-pages/man2/link.2.html) documentation for more detail. No arguments other than
+     * a possible
+     * exception are given to the completion callback.
+     * @since v0.1.31
+     */
+    export function link(existingPath: PathLike, newPath: PathLike, callback: NoParamCallback): void;
+    export namespace link {
+        /**
+         * Asynchronous link(2) - Create a new link (also known as a hard link) to an existing file.
+         * @param existingPath A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param newPath A path to a file. If a URL is provided, it must use the `file:` protocol.
+         */
+        function __promisify__(existingPath: PathLike, newPath: PathLike): Promise<void>;
+    }
+    /**
+     * Creates a new link from the `existingPath` to the `newPath`. See the POSIX [`link(2)`](http://man7.org/linux/man-pages/man2/link.2.html) documentation for more detail. Returns `undefined`.
+     * @since v0.1.31
+     */
+    export function linkSync(existingPath: PathLike, newPath: PathLike): void;
+    /**
+     * Creates the link called `path` pointing to `target`. No arguments other than a
+     * possible exception are given to the completion callback.
+     *
+     * See the POSIX [`symlink(2)`](http://man7.org/linux/man-pages/man2/symlink.2.html) documentation for more details.
+     *
+     * The `type` argument is only available on Windows and ignored on other platforms.
+     * It can be set to `'dir'`, `'file'`, or `'junction'`. If the `type` argument is
+     * not set, Node.js will autodetect `target` type and use `'file'` or `'dir'`. If
+     * the `target` does not exist, `'file'` will be used. Windows junction points
+     * require the destination path to be absolute. When using `'junction'`, the`target` argument will automatically be normalized to absolute path.
+     *
+     * Relative targets are relative to the link’s parent directory.
+     *
+     * ```js
+     * import { symlink } from 'fs';
+     *
+     * symlink('./mew', './mewtwo', callback);
+     * ```
+     *
+     * The above example creates a symbolic link `mewtwo` which points to `mew` in the
+     * same directory:
+     *
+     * ```bash
+     * $ tree .
+     * .
+     * ├── mew
+     * └── mewtwo -> ./mew
+     * ```
+     * @since v0.1.31
+     */
+    export function symlink(target: PathLike, path: PathLike, type: symlink.Type | undefined | null, callback: NoParamCallback): void;
+    /**
+     * Asynchronous symlink(2) - Create a new symbolic link to an existing file.
+     * @param target A path to an existing file. If a URL is provided, it must use the `file:` protocol.
+     * @param path A path to the new symlink. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function symlink(target: PathLike, path: PathLike, callback: NoParamCallback): void;
+    export namespace symlink {
+        /**
+         * Asynchronous symlink(2) - Create a new symbolic link to an existing file.
+         * @param target A path to an existing file. If a URL is provided, it must use the `file:` protocol.
+         * @param path A path to the new symlink. If a URL is provided, it must use the `file:` protocol.
+         * @param type May be set to `'dir'`, `'file'`, or `'junction'` (default is `'file'`) and is only available on Windows (ignored on other platforms).
+         * When using `'junction'`, the `target` argument will automatically be normalized to an absolute path.
+         */
+        function __promisify__(target: PathLike, path: PathLike, type?: string | null): Promise<void>;
+        type Type = 'dir' | 'file' | 'junction';
+    }
+    /**
+     * Returns `undefined`.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link symlink}.
+     * @since v0.1.31
+     */
+    export function symlinkSync(target: PathLike, path: PathLike, type?: symlink.Type | null): void;
+    /**
+     * Reads the contents of the symbolic link referred to by `path`. The callback gets
+     * two arguments `(err, linkString)`.
+     *
+     * See the POSIX [`readlink(2)`](http://man7.org/linux/man-pages/man2/readlink.2.html) documentation for more details.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use for
+     * the link path passed to the callback. If the `encoding` is set to `'buffer'`,
+     * the link path returned will be passed as a `Buffer` object.
+     * @since v0.1.31
+     */
+    export function readlink(path: PathLike, options: EncodingOption, callback: (err: NodeJS.ErrnoException | null, linkString: string) => void): void;
+    /**
+     * Asynchronous readlink(2) - read value of a symbolic link.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function readlink(path: PathLike, options: BufferEncodingOption, callback: (err: NodeJS.ErrnoException | null, linkString: Buffer) => void): void;
+    /**
+     * Asynchronous readlink(2) - read value of a symbolic link.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function readlink(path: PathLike, options: EncodingOption, callback: (err: NodeJS.ErrnoException | null, linkString: string | Buffer) => void): void;
+    /**
+     * Asynchronous readlink(2) - read value of a symbolic link.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function readlink(path: PathLike, callback: (err: NodeJS.ErrnoException | null, linkString: string) => void): void;
+    export namespace readlink {
+        /**
+         * Asynchronous readlink(2) - read value of a symbolic link.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(path: PathLike, options?: EncodingOption): Promise<string>;
+        /**
+         * Asynchronous readlink(2) - read value of a symbolic link.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(path: PathLike, options: BufferEncodingOption): Promise<Buffer>;
+        /**
+         * Asynchronous readlink(2) - read value of a symbolic link.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(path: PathLike, options?: EncodingOption): Promise<string | Buffer>;
+    }
+    /**
+     * Returns the symbolic link's string value.
+     *
+     * See the POSIX [`readlink(2)`](http://man7.org/linux/man-pages/man2/readlink.2.html) documentation for more details.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use for
+     * the link path returned. If the `encoding` is set to `'buffer'`,
+     * the link path returned will be passed as a `Buffer` object.
+     * @since v0.1.31
+     */
+    export function readlinkSync(path: PathLike, options?: EncodingOption): string;
+    /**
+     * Synchronous readlink(2) - read value of a symbolic link.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function readlinkSync(path: PathLike, options: BufferEncodingOption): Buffer;
+    /**
+     * Synchronous readlink(2) - read value of a symbolic link.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function readlinkSync(path: PathLike, options?: EncodingOption): string | Buffer;
+    /**
+     * Asynchronously computes the canonical pathname by resolving `.`, `..` and
+     * symbolic links.
+     *
+     * A canonical pathname is not necessarily unique. Hard links and bind mounts can
+     * expose a file system entity through many pathnames.
+     *
+     * This function behaves like [`realpath(3)`](http://man7.org/linux/man-pages/man3/realpath.3.html), with some exceptions:
+     *
+     * 1. No case conversion is performed on case-insensitive file systems.
+     * 2. The maximum number of symbolic links is platform-independent and generally
+     * (much) higher than what the native [`realpath(3)`](http://man7.org/linux/man-pages/man3/realpath.3.html) implementation supports.
+     *
+     * The `callback` gets two arguments `(err, resolvedPath)`. May use `process.cwd`to resolve relative paths.
+     *
+     * Only paths that can be converted to UTF8 strings are supported.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use for
+     * the path passed to the callback. If the `encoding` is set to `'buffer'`,
+     * the path returned will be passed as a `Buffer` object.
+     *
+     * If `path` resolves to a socket or a pipe, the function will return a system
+     * dependent name for that object.
+     * @since v0.1.31
+     */
+    export function realpath(path: PathLike, options: EncodingOption, callback: (err: NodeJS.ErrnoException | null, resolvedPath: string) => void): void;
+    /**
+     * Asynchronous realpath(3) - return the canonicalized absolute pathname.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function realpath(path: PathLike, options: BufferEncodingOption, callback: (err: NodeJS.ErrnoException | null, resolvedPath: Buffer) => void): void;
+    /**
+     * Asynchronous realpath(3) - return the canonicalized absolute pathname.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function realpath(path: PathLike, options: EncodingOption, callback: (err: NodeJS.ErrnoException | null, resolvedPath: string | Buffer) => void): void;
+    /**
+     * Asynchronous realpath(3) - return the canonicalized absolute pathname.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function realpath(path: PathLike, callback: (err: NodeJS.ErrnoException | null, resolvedPath: string) => void): void;
+    export namespace realpath {
+        /**
+         * Asynchronous realpath(3) - return the canonicalized absolute pathname.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(path: PathLike, options?: EncodingOption): Promise<string>;
+        /**
+         * Asynchronous realpath(3) - return the canonicalized absolute pathname.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(path: PathLike, options: BufferEncodingOption): Promise<Buffer>;
+        /**
+         * Asynchronous realpath(3) - return the canonicalized absolute pathname.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(path: PathLike, options?: EncodingOption): Promise<string | Buffer>;
+        /**
+         * Asynchronous [`realpath(3)`](http://man7.org/linux/man-pages/man3/realpath.3.html).
+         *
+         * The `callback` gets two arguments `(err, resolvedPath)`.
+         *
+         * Only paths that can be converted to UTF8 strings are supported.
+         *
+         * The optional `options` argument can be a string specifying an encoding, or an
+         * object with an `encoding` property specifying the character encoding to use for
+         * the path passed to the callback. If the `encoding` is set to `'buffer'`,
+         * the path returned will be passed as a `Buffer` object.
+         *
+         * On Linux, when Node.js is linked against musl libc, the procfs file system must
+         * be mounted on `/proc` in order for this function to work. Glibc does not have
+         * this restriction.
+         * @since v9.2.0
+         */
+        function native(path: PathLike, options: EncodingOption, callback: (err: NodeJS.ErrnoException | null, resolvedPath: string) => void): void;
+        function native(path: PathLike, options: BufferEncodingOption, callback: (err: NodeJS.ErrnoException | null, resolvedPath: Buffer) => void): void;
+        function native(path: PathLike, options: EncodingOption, callback: (err: NodeJS.ErrnoException | null, resolvedPath: string | Buffer) => void): void;
+        function native(path: PathLike, callback: (err: NodeJS.ErrnoException | null, resolvedPath: string) => void): void;
+    }
+    /**
+     * Returns the resolved pathname.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link realpath}.
+     * @since v0.1.31
+     */
+    export function realpathSync(path: PathLike, options?: EncodingOption): string;
+    /**
+     * Synchronous realpath(3) - return the canonicalized absolute pathname.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function realpathSync(path: PathLike, options: BufferEncodingOption): Buffer;
+    /**
+     * Synchronous realpath(3) - return the canonicalized absolute pathname.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function realpathSync(path: PathLike, options?: EncodingOption): string | Buffer;
+    export namespace realpathSync {
+        function native(path: PathLike, options?: EncodingOption): string;
+        function native(path: PathLike, options: BufferEncodingOption): Buffer;
+        function native(path: PathLike, options?: EncodingOption): string | Buffer;
+    }
+    /**
+     * Asynchronously removes a file or symbolic link. No arguments other than a
+     * possible exception are given to the completion callback.
+     *
+     * ```js
+     * import { unlink } from 'fs';
+     * // Assuming that 'path/file.txt' is a regular file.
+     * unlink('path/file.txt', (err) => {
+     *   if (err) throw err;
+     *   console.log('path/file.txt was deleted');
+     * });
+     * ```
+     *
+     * `fs.unlink()` will not work on a directory, empty or otherwise. To remove a
+     * directory, use {@link rmdir}.
+     *
+     * See the POSIX [`unlink(2)`](http://man7.org/linux/man-pages/man2/unlink.2.html) documentation for more details.
+     * @since v0.0.2
+     */
+    export function unlink(path: PathLike, callback: NoParamCallback): void;
+    export namespace unlink {
+        /**
+         * Asynchronous unlink(2) - delete a name and possibly the file it refers to.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         */
+        function __promisify__(path: PathLike): Promise<void>;
+    }
+    /**
+     * Synchronous [`unlink(2)`](http://man7.org/linux/man-pages/man2/unlink.2.html). Returns `undefined`.
+     * @since v0.1.21
+     */
+    export function unlinkSync(path: PathLike): void;
+    export interface RmDirOptions {
+        /**
+         * If an `EBUSY`, `EMFILE`, `ENFILE`, `ENOTEMPTY`, or
+         * `EPERM` error is encountered, Node.js will retry the operation with a linear
+         * backoff wait of `retryDelay` ms longer on each try. This option represents the
+         * number of retries. This option is ignored if the `recursive` option is not
+         * `true`.
+         * @default 0
+         */
+        maxRetries?: number | undefined;
+        /**
+         * @deprecated since v14.14.0 In future versions of Node.js and will trigger a warning
+         * `fs.rmdir(path, { recursive: true })` will throw if `path` does not exist or is a file.
+         * Use `fs.rm(path, { recursive: true, force: true })` instead.
+         *
+         * If `true`, perform a recursive directory removal. In
+         * recursive mode, operations are retried on failure.
+         * @default false
+         */
+        recursive?: boolean | undefined;
+        /**
+         * The amount of time in milliseconds to wait between retries.
+         * This option is ignored if the `recursive` option is not `true`.
+         * @default 100
+         */
+        retryDelay?: number | undefined;
+    }
+    /**
+     * Asynchronous [`rmdir(2)`](http://man7.org/linux/man-pages/man2/rmdir.2.html). No arguments other than a possible exception are given
+     * to the completion callback.
+     *
+     * Using `fs.rmdir()` on a file (not a directory) results in an `ENOENT` error on
+     * Windows and an `ENOTDIR` error on POSIX.
+     *
+     * To get a behavior similar to the `rm -rf` Unix command, use {@link rm} with options `{ recursive: true, force: true }`.
+     * @since v0.0.2
+     */
+    export function rmdir(path: PathLike, callback: NoParamCallback): void;
+    export function rmdir(path: PathLike, options: RmDirOptions, callback: NoParamCallback): void;
+    export namespace rmdir {
+        /**
+         * Asynchronous rmdir(2) - delete a directory.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         */
+        function __promisify__(path: PathLike, options?: RmDirOptions): Promise<void>;
+    }
+    /**
+     * Synchronous [`rmdir(2)`](http://man7.org/linux/man-pages/man2/rmdir.2.html). Returns `undefined`.
+     *
+     * Using `fs.rmdirSync()` on a file (not a directory) results in an `ENOENT` error
+     * on Windows and an `ENOTDIR` error on POSIX.
+     *
+     * To get a behavior similar to the `rm -rf` Unix command, use {@link rmSync} with options `{ recursive: true, force: true }`.
+     * @since v0.1.21
+     */
+    export function rmdirSync(path: PathLike, options?: RmDirOptions): void;
+    export interface RmOptions {
+        /**
+         * When `true`, exceptions will be ignored if `path` does not exist.
+         * @default false
+         */
+        force?: boolean | undefined;
+        /**
+         * If an `EBUSY`, `EMFILE`, `ENFILE`, `ENOTEMPTY`, or
+         * `EPERM` error is encountered, Node.js will retry the operation with a linear
+         * backoff wait of `retryDelay` ms longer on each try. This option represents the
+         * number of retries. This option is ignored if the `recursive` option is not
+         * `true`.
+         * @default 0
+         */
+        maxRetries?: number | undefined;
+        /**
+         * If `true`, perform a recursive directory removal. In
+         * recursive mode, operations are retried on failure.
+         * @default false
+         */
+        recursive?: boolean | undefined;
+        /**
+         * The amount of time in milliseconds to wait between retries.
+         * This option is ignored if the `recursive` option is not `true`.
+         * @default 100
+         */
+        retryDelay?: number | undefined;
+    }
+    /**
+     * Asynchronously removes files and directories (modeled on the standard POSIX `rm`utility). No arguments other than a possible exception are given to the
+     * completion callback.
+     * @since v14.14.0
+     */
+    export function rm(path: PathLike, callback: NoParamCallback): void;
+    export function rm(path: PathLike, options: RmOptions, callback: NoParamCallback): void;
+    export namespace rm {
+        /**
+         * Asynchronously removes files and directories (modeled on the standard POSIX `rm` utility).
+         */
+        function __promisify__(path: PathLike, options?: RmOptions): Promise<void>;
+    }
+    /**
+     * Synchronously removes files and directories (modeled on the standard POSIX `rm`utility). Returns `undefined`.
+     * @since v14.14.0
+     */
+    export function rmSync(path: PathLike, options?: RmOptions): void;
+    export interface MakeDirectoryOptions {
+        /**
+         * Indicates whether parent folders should be created.
+         * If a folder was created, the path to the first created folder will be returned.
+         * @default false
+         */
+        recursive?: boolean | undefined;
+        /**
+         * A file mode. If a string is passed, it is parsed as an octal integer. If not specified
+         * @default 0o777
+         */
+        mode?: Mode | undefined;
+    }
+    /**
+     * Asynchronously creates a directory.
+     *
+     * The callback is given a possible exception and, if `recursive` is `true`, the
+     * first directory path created, `(err[, path])`.`path` can still be `undefined` when `recursive` is `true`, if no directory was
+     * created.
+     *
+     * The optional `options` argument can be an integer specifying `mode` (permission
+     * and sticky bits), or an object with a `mode` property and a `recursive`property indicating whether parent directories should be created. Calling`fs.mkdir()` when `path` is a directory that
+     * exists results in an error only
+     * when `recursive` is false.
+     *
+     * ```js
+     * import { mkdir } from 'fs';
+     *
+     * // Creates /tmp/a/apple, regardless of whether `/tmp` and /tmp/a exist.
+     * mkdir('/tmp/a/apple', { recursive: true }, (err) => {
+     *   if (err) throw err;
+     * });
+     * ```
+     *
+     * On Windows, using `fs.mkdir()` on the root directory even with recursion will
+     * result in an error:
+     *
+     * ```js
+     * import { mkdir } from 'fs';
+     *
+     * mkdir('/', { recursive: true }, (err) => {
+     *   // => [Error: EPERM: operation not permitted, mkdir 'C:\']
+     * });
+     * ```
+     *
+     * See the POSIX [`mkdir(2)`](http://man7.org/linux/man-pages/man2/mkdir.2.html) documentation for more details.
+     * @since v0.1.8
+     */
+    export function mkdir(
+        path: PathLike,
+        options: MakeDirectoryOptions & {
+            recursive: true;
+        },
+        callback: (err: NodeJS.ErrnoException | null, path?: string) => void
+    ): void;
+    /**
+     * Asynchronous mkdir(2) - create a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+     * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+     */
+    export function mkdir(
+        path: PathLike,
+        options:
+            | Mode
+            | (MakeDirectoryOptions & {
+                  recursive?: false | undefined;
+              })
+            | null
+            | undefined,
+        callback: NoParamCallback
+    ): void;
+    /**
+     * Asynchronous mkdir(2) - create a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+     * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+     */
+    export function mkdir(path: PathLike, options: Mode | MakeDirectoryOptions | null | undefined, callback: (err: NodeJS.ErrnoException | null, path?: string) => void): void;
+    /**
+     * Asynchronous mkdir(2) - create a directory with a mode of `0o777`.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function mkdir(path: PathLike, callback: NoParamCallback): void;
+    export namespace mkdir {
+        /**
+         * Asynchronous mkdir(2) - create a directory.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+         * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+         */
+        function __promisify__(
+            path: PathLike,
+            options: MakeDirectoryOptions & {
+                recursive: true;
+            }
+        ): Promise<string | undefined>;
+        /**
+         * Asynchronous mkdir(2) - create a directory.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+         * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+         */
+        function __promisify__(
+            path: PathLike,
+            options?:
+                | Mode
+                | (MakeDirectoryOptions & {
+                      recursive?: false | undefined;
+                  })
+                | null
+        ): Promise<void>;
+        /**
+         * Asynchronous mkdir(2) - create a directory.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+         * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+         */
+        function __promisify__(path: PathLike, options?: Mode | MakeDirectoryOptions | null): Promise<string | undefined>;
+    }
+    /**
+     * Synchronously creates a directory. Returns `undefined`, or if `recursive` is`true`, the first directory path created.
+     * This is the synchronous version of {@link mkdir}.
+     *
+     * See the POSIX [`mkdir(2)`](http://man7.org/linux/man-pages/man2/mkdir.2.html) documentation for more details.
+     * @since v0.1.21
+     */
+    export function mkdirSync(
+        path: PathLike,
+        options: MakeDirectoryOptions & {
+            recursive: true;
+        }
+    ): string | undefined;
+    /**
+     * Synchronous mkdir(2) - create a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+     * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+     */
+    export function mkdirSync(
+        path: PathLike,
+        options?:
+            | Mode
+            | (MakeDirectoryOptions & {
+                  recursive?: false | undefined;
+              })
+            | null
+    ): void;
+    /**
+     * Synchronous mkdir(2) - create a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+     * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+     */
+    export function mkdirSync(path: PathLike, options?: Mode | MakeDirectoryOptions | null): string | undefined;
+    /**
+     * Creates a unique temporary directory.
+     *
+     * Generates six random characters to be appended behind a required`prefix` to create a unique temporary directory. Due to platform
+     * inconsistencies, avoid trailing `X` characters in `prefix`. Some platforms,
+     * notably the BSDs, can return more than six random characters, and replace
+     * trailing `X` characters in `prefix` with random characters.
+     *
+     * The created directory path is passed as a string to the callback's second
+     * parameter.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use.
+     *
+     * ```js
+     * import { mkdtemp } from 'fs';
+     *
+     * mkdtemp(path.join(os.tmpdir(), 'foo-'), (err, directory) => {
+     *   if (err) throw err;
+     *   console.log(directory);
+     *   // Prints: /tmp/foo-itXde2 or C:\Users\...\AppData\Local\Temp\foo-itXde2
+     * });
+     * ```
+     *
+     * The `fs.mkdtemp()` method will append the six randomly selected characters
+     * directly to the `prefix` string. For instance, given a directory `/tmp`, if the
+     * intention is to create a temporary directory _within_`/tmp`, the `prefix`must end with a trailing platform-specific path separator
+     * (`require('path').sep`).
+     *
+     * ```js
+     * import { tmpdir } from 'os';
+     * import { mkdtemp } from 'fs';
+     *
+     * // The parent directory for the new temporary directory
+     * const tmpDir = tmpdir();
+     *
+     * // This method is *INCORRECT*:
+     * mkdtemp(tmpDir, (err, directory) => {
+     *   if (err) throw err;
+     *   console.log(directory);
+     *   // Will print something similar to `/tmpabc123`.
+     *   // A new temporary directory is created at the file system root
+     *   // rather than *within* the /tmp directory.
+     * });
+     *
+     * // This method is *CORRECT*:
+     * import { sep } from 'path';
+     * mkdtemp(`${tmpDir}${sep}`, (err, directory) => {
+     *   if (err) throw err;
+     *   console.log(directory);
+     *   // Will print something similar to `/tmp/abc123`.
+     *   // A new temporary directory is created within
+     *   // the /tmp directory.
+     * });
+     * ```
+     * @since v5.10.0
+     */
+    export function mkdtemp(prefix: string, options: EncodingOption, callback: (err: NodeJS.ErrnoException | null, folder: string) => void): void;
+    /**
+     * Asynchronously creates a unique temporary directory.
+     * Generates six random characters to be appended behind a required prefix to create a unique temporary directory.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function mkdtemp(
+        prefix: string,
+        options:
+            | 'buffer'
+            | {
+                  encoding: 'buffer';
+              },
+        callback: (err: NodeJS.ErrnoException | null, folder: Buffer) => void
+    ): void;
+    /**
+     * Asynchronously creates a unique temporary directory.
+     * Generates six random characters to be appended behind a required prefix to create a unique temporary directory.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function mkdtemp(prefix: string, options: EncodingOption, callback: (err: NodeJS.ErrnoException | null, folder: string | Buffer) => void): void;
+    /**
+     * Asynchronously creates a unique temporary directory.
+     * Generates six random characters to be appended behind a required prefix to create a unique temporary directory.
+     */
+    export function mkdtemp(prefix: string, callback: (err: NodeJS.ErrnoException | null, folder: string) => void): void;
+    export namespace mkdtemp {
+        /**
+         * Asynchronously creates a unique temporary directory.
+         * Generates six random characters to be appended behind a required prefix to create a unique temporary directory.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(prefix: string, options?: EncodingOption): Promise<string>;
+        /**
+         * Asynchronously creates a unique temporary directory.
+         * Generates six random characters to be appended behind a required prefix to create a unique temporary directory.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(prefix: string, options: BufferEncodingOption): Promise<Buffer>;
+        /**
+         * Asynchronously creates a unique temporary directory.
+         * Generates six random characters to be appended behind a required prefix to create a unique temporary directory.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(prefix: string, options?: EncodingOption): Promise<string | Buffer>;
+    }
+    /**
+     * Returns the created directory path.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link mkdtemp}.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use.
+     * @since v5.10.0
+     */
+    export function mkdtempSync(prefix: string, options?: EncodingOption): string;
+    /**
+     * Synchronously creates a unique temporary directory.
+     * Generates six random characters to be appended behind a required prefix to create a unique temporary directory.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function mkdtempSync(prefix: string, options: BufferEncodingOption): Buffer;
+    /**
+     * Synchronously creates a unique temporary directory.
+     * Generates six random characters to be appended behind a required prefix to create a unique temporary directory.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function mkdtempSync(prefix: string, options?: EncodingOption): string | Buffer;
+    /**
+     * Reads the contents of a directory. The callback gets two arguments `(err, files)`where `files` is an array of the names of the files in the directory excluding`'.'` and `'..'`.
+     *
+     * See the POSIX [`readdir(3)`](http://man7.org/linux/man-pages/man3/readdir.3.html) documentation for more details.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use for
+     * the filenames passed to the callback. If the `encoding` is set to `'buffer'`,
+     * the filenames returned will be passed as `Buffer` objects.
+     *
+     * If `options.withFileTypes` is set to `true`, the `files` array will contain `fs.Dirent` objects.
+     * @since v0.1.8
+     */
+    export function readdir(
+        path: PathLike,
+        options:
+            | {
+                  encoding: BufferEncoding | null;
+                  withFileTypes?: false | undefined;
+              }
+            | BufferEncoding
+            | undefined
+            | null,
+        callback: (err: NodeJS.ErrnoException | null, files: string[]) => void
+    ): void;
+    /**
+     * Asynchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function readdir(
+        path: PathLike,
+        options:
+            | {
+                  encoding: 'buffer';
+                  withFileTypes?: false | undefined;
+              }
+            | 'buffer',
+        callback: (err: NodeJS.ErrnoException | null, files: Buffer[]) => void
+    ): void;
+    /**
+     * Asynchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function readdir(
+        path: PathLike,
+        options:
+            | (ObjectEncodingOptions & {
+                  withFileTypes?: false | undefined;
+              })
+            | BufferEncoding
+            | undefined
+            | null,
+        callback: (err: NodeJS.ErrnoException | null, files: string[] | Buffer[]) => void
+    ): void;
+    /**
+     * Asynchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function readdir(path: PathLike, callback: (err: NodeJS.ErrnoException | null, files: string[]) => void): void;
+    /**
+     * Asynchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options If called with `withFileTypes: true` the result data will be an array of Dirent.
+     */
+    export function readdir(
+        path: PathLike,
+        options: ObjectEncodingOptions & {
+            withFileTypes: true;
+        },
+        callback: (err: NodeJS.ErrnoException | null, files: Dirent[]) => void
+    ): void;
+    export namespace readdir {
+        /**
+         * Asynchronous readdir(3) - read a directory.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(
+            path: PathLike,
+            options?:
+                | {
+                      encoding: BufferEncoding | null;
+                      withFileTypes?: false | undefined;
+                  }
+                | BufferEncoding
+                | null
+        ): Promise<string[]>;
+        /**
+         * Asynchronous readdir(3) - read a directory.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(
+            path: PathLike,
+            options:
+                | 'buffer'
+                | {
+                      encoding: 'buffer';
+                      withFileTypes?: false | undefined;
+                  }
+        ): Promise<Buffer[]>;
+        /**
+         * Asynchronous readdir(3) - read a directory.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+         */
+        function __promisify__(
+            path: PathLike,
+            options?:
+                | (ObjectEncodingOptions & {
+                      withFileTypes?: false | undefined;
+                  })
+                | BufferEncoding
+                | null
+        ): Promise<string[] | Buffer[]>;
+        /**
+         * Asynchronous readdir(3) - read a directory.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param options If called with `withFileTypes: true` the result data will be an array of Dirent
+         */
+        function __promisify__(
+            path: PathLike,
+            options: ObjectEncodingOptions & {
+                withFileTypes: true;
+            }
+        ): Promise<Dirent[]>;
+    }
+    /**
+     * Reads the contents of the directory.
+     *
+     * See the POSIX [`readdir(3)`](http://man7.org/linux/man-pages/man3/readdir.3.html) documentation for more details.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use for
+     * the filenames returned. If the `encoding` is set to `'buffer'`,
+     * the filenames returned will be passed as `Buffer` objects.
+     *
+     * If `options.withFileTypes` is set to `true`, the result will contain `fs.Dirent` objects.
+     * @since v0.1.21
+     */
+    export function readdirSync(
+        path: PathLike,
+        options?:
+            | {
+                  encoding: BufferEncoding | null;
+                  withFileTypes?: false | undefined;
+              }
+            | BufferEncoding
+            | null
+    ): string[];
+    /**
+     * Synchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function readdirSync(
+        path: PathLike,
+        options:
+            | {
+                  encoding: 'buffer';
+                  withFileTypes?: false | undefined;
+              }
+            | 'buffer'
+    ): Buffer[];
+    /**
+     * Synchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    export function readdirSync(
+        path: PathLike,
+        options?:
+            | (ObjectEncodingOptions & {
+                  withFileTypes?: false | undefined;
+              })
+            | BufferEncoding
+            | null
+    ): string[] | Buffer[];
+    /**
+     * Synchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options If called with `withFileTypes: true` the result data will be an array of Dirent.
+     */
+    export function readdirSync(
+        path: PathLike,
+        options: ObjectEncodingOptions & {
+            withFileTypes: true;
+        }
+    ): Dirent[];
+    /**
+     * Closes the file descriptor. No arguments other than a possible exception are
+     * given to the completion callback.
+     *
+     * Calling `fs.close()` on any file descriptor (`fd`) that is currently in use
+     * through any other `fs` operation may lead to undefined behavior.
+     *
+     * See the POSIX [`close(2)`](http://man7.org/linux/man-pages/man2/close.2.html) documentation for more detail.
+     * @since v0.0.2
+     */
+    export function close(fd: number, callback?: NoParamCallback): void;
+    export namespace close {
+        /**
+         * Asynchronous close(2) - close a file descriptor.
+         * @param fd A file descriptor.
+         */
+        function __promisify__(fd: number): Promise<void>;
+    }
+    /**
+     * Closes the file descriptor. Returns `undefined`.
+     *
+     * Calling `fs.closeSync()` on any file descriptor (`fd`) that is currently in use
+     * through any other `fs` operation may lead to undefined behavior.
+     *
+     * See the POSIX [`close(2)`](http://man7.org/linux/man-pages/man2/close.2.html) documentation for more detail.
+     * @since v0.1.21
+     */
+    export function closeSync(fd: number): void;
+    /**
+     * Asynchronous file open. See the POSIX [`open(2)`](http://man7.org/linux/man-pages/man2/open.2.html) documentation for more details.
+     *
+     * `mode` sets the file mode (permission and sticky bits), but only if the file was
+     * created. On Windows, only the write permission can be manipulated; see {@link chmod}.
+     *
+     * The callback gets two arguments `(err, fd)`.
+     *
+     * Some characters (`< > : " / \ | ? *`) are reserved under Windows as documented
+     * by [Naming Files, Paths, and Namespaces](https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file). Under NTFS, if the filename contains
+     * a colon, Node.js will open a file system stream, as described by [this MSDN page](https://docs.microsoft.com/en-us/windows/desktop/FileIO/using-streams).
+     *
+     * Functions based on `fs.open()` exhibit this behavior as well:`fs.writeFile()`, `fs.readFile()`, etc.
+     * @since v0.0.2
+     * @param [flags='r'] See `support of file system `flags``.
+     * @param [mode=0o666]
+     */
+    export function open(path: PathLike, flags: OpenMode | undefined, mode: Mode | undefined | null, callback: (err: NodeJS.ErrnoException | null, fd: number) => void): void;
+    /**
+     * Asynchronous open(2) - open and possibly create a file. If the file is created, its mode will be `0o666`.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param [flags='r'] See `support of file system `flags``.
+     */
+    export function open(path: PathLike, flags: OpenMode | undefined, callback: (err: NodeJS.ErrnoException | null, fd: number) => void): void;
+    /**
+     * Asynchronous open(2) - open and possibly create a file. If the file is created, its mode will be `0o666`.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function open(path: PathLike, callback: (err: NodeJS.ErrnoException | null, fd: number) => void): void;
+
+    export namespace open {
+        /**
+         * Asynchronous open(2) - open and possibly create a file.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param mode A file mode. If a string is passed, it is parsed as an octal integer. If not supplied, defaults to `0o666`.
+         */
+        function __promisify__(path: PathLike, flags: OpenMode, mode?: Mode | null): Promise<number>;
+    }
+    /**
+     * Returns an integer representing the file descriptor.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link open}.
+     * @since v0.1.21
+     * @param [flags='r']
+     * @param [mode=0o666]
+     */
+    export function openSync(path: PathLike, flags: OpenMode, mode?: Mode | null): number;
+    /**
+     * Change the file system timestamps of the object referenced by `path`.
+     *
+     * The `atime` and `mtime` arguments follow these rules:
+     *
+     * * Values can be either numbers representing Unix epoch time in seconds,`Date`s, or a numeric string like `'123456789.0'`.
+     * * If the value can not be converted to a number, or is `NaN`, `Infinity` or`-Infinity`, an `Error` will be thrown.
+     * @since v0.4.2
+     */
+    export function utimes(path: PathLike, atime: TimeLike, mtime: TimeLike, callback: NoParamCallback): void;
+    export namespace utimes {
+        /**
+         * Asynchronously change file timestamps of the file referenced by the supplied path.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * @param atime The last access time. If a string is provided, it will be coerced to number.
+         * @param mtime The last modified time. If a string is provided, it will be coerced to number.
+         */
+        function __promisify__(path: PathLike, atime: TimeLike, mtime: TimeLike): Promise<void>;
+    }
+    /**
+     * Returns `undefined`.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link utimes}.
+     * @since v0.4.2
+     */
+    export function utimesSync(path: PathLike, atime: TimeLike, mtime: TimeLike): void;
+    /**
+     * Change the file system timestamps of the object referenced by the supplied file
+     * descriptor. See {@link utimes}.
+     * @since v0.4.2
+     */
+    export function futimes(fd: number, atime: TimeLike, mtime: TimeLike, callback: NoParamCallback): void;
+    export namespace futimes {
+        /**
+         * Asynchronously change file timestamps of the file referenced by the supplied file descriptor.
+         * @param fd A file descriptor.
+         * @param atime The last access time. If a string is provided, it will be coerced to number.
+         * @param mtime The last modified time. If a string is provided, it will be coerced to number.
+         */
+        function __promisify__(fd: number, atime: TimeLike, mtime: TimeLike): Promise<void>;
+    }
+    /**
+     * Synchronous version of {@link futimes}. Returns `undefined`.
+     * @since v0.4.2
+     */
+    export function futimesSync(fd: number, atime: TimeLike, mtime: TimeLike): void;
+    /**
+     * Request that all data for the open file descriptor is flushed to the storage
+     * device. The specific implementation is operating system and device specific.
+     * Refer to the POSIX [`fsync(2)`](http://man7.org/linux/man-pages/man2/fsync.2.html) documentation for more detail. No arguments other
+     * than a possible exception are given to the completion callback.
+     * @since v0.1.96
+     */
+    export function fsync(fd: number, callback: NoParamCallback): void;
+    export namespace fsync {
+        /**
+         * Asynchronous fsync(2) - synchronize a file's in-core state with the underlying storage device.
+         * @param fd A file descriptor.
+         */
+        function __promisify__(fd: number): Promise<void>;
+    }
+    /**
+     * Request that all data for the open file descriptor is flushed to the storage
+     * device. The specific implementation is operating system and device specific.
+     * Refer to the POSIX [`fsync(2)`](http://man7.org/linux/man-pages/man2/fsync.2.html) documentation for more detail. Returns `undefined`.
+     * @since v0.1.96
+     */
+    export function fsyncSync(fd: number): void;
+    /**
+     * Write `buffer` to the file specified by `fd`.
+     *
+     * `offset` determines the part of the buffer to be written, and `length` is
+     * an integer specifying the number of bytes to write.
+     *
+     * `position` refers to the offset from the beginning of the file where this data
+     * should be written. If `typeof position !== 'number'`, the data will be written
+     * at the current position. See [`pwrite(2)`](http://man7.org/linux/man-pages/man2/pwrite.2.html).
+     *
+     * The callback will be given three arguments `(err, bytesWritten, buffer)` where`bytesWritten` specifies how many _bytes_ were written from `buffer`.
+     *
+     * If this method is invoked as its `util.promisify()` ed version, it returns
+     * a promise for an `Object` with `bytesWritten` and `buffer` properties.
+     *
+     * It is unsafe to use `fs.write()` multiple times on the same file without waiting
+     * for the callback. For this scenario, {@link createWriteStream} is
+     * recommended.
+     *
+     * On Linux, positional writes don't work when the file is opened in append mode.
+     * The kernel ignores the position argument and always appends the data to
+     * the end of the file.
+     * @since v0.0.2
+     */
+    export function write<TBuffer extends NodeJS.ArrayBufferView>(
+        fd: number,
+        buffer: TBuffer,
+        offset: number | undefined | null,
+        length: number | undefined | null,
+        position: number | undefined | null,
+        callback: (err: NodeJS.ErrnoException | null, written: number, buffer: TBuffer) => void
+    ): void;
+    /**
+     * Asynchronously writes `buffer` to the file referenced by the supplied file descriptor.
+     * @param fd A file descriptor.
+     * @param offset The part of the buffer to be written. If not supplied, defaults to `0`.
+     * @param length The number of bytes to write. If not supplied, defaults to `buffer.length - offset`.
+     */
+    export function write<TBuffer extends NodeJS.ArrayBufferView>(
+        fd: number,
+        buffer: TBuffer,
+        offset: number | undefined | null,
+        length: number | undefined | null,
+        callback: (err: NodeJS.ErrnoException | null, written: number, buffer: TBuffer) => void
+    ): void;
+    /**
+     * Asynchronously writes `buffer` to the file referenced by the supplied file descriptor.
+     * @param fd A file descriptor.
+     * @param offset The part of the buffer to be written. If not supplied, defaults to `0`.
+     */
+    export function write<TBuffer extends NodeJS.ArrayBufferView>(
+        fd: number,
+        buffer: TBuffer,
+        offset: number | undefined | null,
+        callback: (err: NodeJS.ErrnoException | null, written: number, buffer: TBuffer) => void
+    ): void;
+    /**
+     * Asynchronously writes `buffer` to the file referenced by the supplied file descriptor.
+     * @param fd A file descriptor.
+     */
+    export function write<TBuffer extends NodeJS.ArrayBufferView>(fd: number, buffer: TBuffer, callback: (err: NodeJS.ErrnoException | null, written: number, buffer: TBuffer) => void): void;
+    /**
+     * Asynchronously writes `string` to the file referenced by the supplied file descriptor.
+     * @param fd A file descriptor.
+     * @param string A string to write.
+     * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position.
+     * @param encoding The expected string encoding.
+     */
+    export function write(
+        fd: number,
+        string: string,
+        position: number | undefined | null,
+        encoding: BufferEncoding | undefined | null,
+        callback: (err: NodeJS.ErrnoException | null, written: number, str: string) => void
+    ): void;
+    /**
+     * Asynchronously writes `string` to the file referenced by the supplied file descriptor.
+     * @param fd A file descriptor.
+     * @param string A string to write.
+     * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position.
+     */
+    export function write(fd: number, string: string, position: number | undefined | null, callback: (err: NodeJS.ErrnoException | null, written: number, str: string) => void): void;
+    /**
+     * Asynchronously writes `string` to the file referenced by the supplied file descriptor.
+     * @param fd A file descriptor.
+     * @param string A string to write.
+     */
+    export function write(fd: number, string: string, callback: (err: NodeJS.ErrnoException | null, written: number, str: string) => void): void;
+    export namespace write {
+        /**
+         * Asynchronously writes `buffer` to the file referenced by the supplied file descriptor.
+         * @param fd A file descriptor.
+         * @param offset The part of the buffer to be written. If not supplied, defaults to `0`.
+         * @param length The number of bytes to write. If not supplied, defaults to `buffer.length - offset`.
+         * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position.
+         */
+        function __promisify__<TBuffer extends NodeJS.ArrayBufferView>(
+            fd: number,
+            buffer?: TBuffer,
+            offset?: number,
+            length?: number,
+            position?: number | null
+        ): Promise<{
+            bytesWritten: number;
+            buffer: TBuffer;
+        }>;
+        /**
+         * Asynchronously writes `string` to the file referenced by the supplied file descriptor.
+         * @param fd A file descriptor.
+         * @param string A string to write.
+         * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position.
+         * @param encoding The expected string encoding.
+         */
+        function __promisify__(
+            fd: number,
+            string: string,
+            position?: number | null,
+            encoding?: BufferEncoding | null
+        ): Promise<{
+            bytesWritten: number;
+            buffer: string;
+        }>;
+    }
+    /**
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link write}.
+     * @since v0.1.21
+     * @return The number of bytes written.
+     */
+    export function writeSync(fd: number, buffer: NodeJS.ArrayBufferView, offset?: number | null, length?: number | null, position?: number | null): number;
+    /**
+     * Synchronously writes `string` to the file referenced by the supplied file descriptor, returning the number of bytes written.
+     * @param fd A file descriptor.
+     * @param string A string to write.
+     * @param position The offset from the beginning of the file where this data should be written. If not supplied, defaults to the current position.
+     * @param encoding The expected string encoding.
+     */
+    export function writeSync(fd: number, string: string, position?: number | null, encoding?: BufferEncoding | null): number;
+    export type ReadPosition = number | bigint;
+    export interface ReadSyncOptions {
+        /**
+         * @default 0
+         */
+        offset?: number | undefined;
+        /**
+         * @default `length of buffer`
+         */
+        length?: number | undefined;
+        /**
+         * @default null
+         */
+        position?: ReadPosition | null | undefined;
+    }
+    export interface ReadAsyncOptions<TBuffer extends NodeJS.ArrayBufferView> extends ReadSyncOptions {
+        buffer?: TBuffer;
+    }
+    /**
+     * Read data from the file specified by `fd`.
+     *
+     * The callback is given the three arguments, `(err, bytesRead, buffer)`.
+     *
+     * If the file is not modified concurrently, the end-of-file is reached when the
+     * number of bytes read is zero.
+     *
+     * If this method is invoked as its `util.promisify()` ed version, it returns
+     * a promise for an `Object` with `bytesRead` and `buffer` properties.
+     * @since v0.0.2
+     * @param buffer The buffer that the data will be written to.
+     * @param offset The position in `buffer` to write the data to.
+     * @param length The number of bytes to read.
+     * @param position Specifies where to begin reading from in the file. If `position` is `null` or `-1 `, data will be read from the current file position, and the file position will be updated. If
+     * `position` is an integer, the file position will be unchanged.
+     */
+    export function read<TBuffer extends NodeJS.ArrayBufferView>(
+        fd: number,
+        buffer: TBuffer,
+        offset: number,
+        length: number,
+        position: ReadPosition | null,
+        callback: (err: NodeJS.ErrnoException | null, bytesRead: number, buffer: TBuffer) => void
+    ): void;
+    /**
+     * Similar to the above `fs.read` function, this version takes an optional `options` object.
+     * If not otherwise specified in an `options` object,
+     * `buffer` defaults to `Buffer.alloc(16384)`,
+     * `offset` defaults to `0`,
+     * `length` defaults to `buffer.byteLength`, `- offset` as of Node 17.6.0
+     * `position` defaults to `null`
+     * @since v12.17.0, 13.11.0
+     */
+    export function read<TBuffer extends NodeJS.ArrayBufferView>(
+        fd: number,
+        options: ReadAsyncOptions<TBuffer>,
+        callback: (err: NodeJS.ErrnoException | null, bytesRead: number, buffer: TBuffer) => void
+    ): void;
+    export function read(fd: number, callback: (err: NodeJS.ErrnoException | null, bytesRead: number, buffer: NodeJS.ArrayBufferView) => void): void;
+    export namespace read {
+        /**
+         * @param fd A file descriptor.
+         * @param buffer The buffer that the data will be written to.
+         * @param offset The offset in the buffer at which to start writing.
+         * @param length The number of bytes to read.
+         * @param position The offset from the beginning of the file from which data should be read. If `null`, data will be read from the current position.
+         */
+        function __promisify__<TBuffer extends NodeJS.ArrayBufferView>(
+            fd: number,
+            buffer: TBuffer,
+            offset: number,
+            length: number,
+            position: number | null
+        ): Promise<{
+            bytesRead: number;
+            buffer: TBuffer;
+        }>;
+        function __promisify__<TBuffer extends NodeJS.ArrayBufferView>(
+            fd: number,
+            options: ReadAsyncOptions<TBuffer>
+        ): Promise<{
+            bytesRead: number;
+            buffer: TBuffer;
+        }>;
+        function __promisify__(fd: number): Promise<{
+            bytesRead: number;
+            buffer: NodeJS.ArrayBufferView;
+        }>;
+    }
+    /**
+     * Returns the number of `bytesRead`.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link read}.
+     * @since v0.1.21
+     */
+    export function readSync(fd: number, buffer: NodeJS.ArrayBufferView, offset: number, length: number, position: ReadPosition | null): number;
+    /**
+     * Similar to the above `fs.readSync` function, this version takes an optional `options` object.
+     * If no `options` object is specified, it will default with the above values.
+     */
+    export function readSync(fd: number, buffer: NodeJS.ArrayBufferView, opts?: ReadSyncOptions): number;
+    /**
+     * Asynchronously reads the entire contents of a file.
+     *
+     * ```js
+     * import { readFile } from 'fs';
+     *
+     * readFile('/etc/passwd', (err, data) => {
+     *   if (err) throw err;
+     *   console.log(data);
+     * });
+     * ```
+     *
+     * The callback is passed two arguments `(err, data)`, where `data` is the
+     * contents of the file.
+     *
+     * If no encoding is specified, then the raw buffer is returned.
+     *
+     * If `options` is a string, then it specifies the encoding:
+     *
+     * ```js
+     * import { readFile } from 'fs';
+     *
+     * readFile('/etc/passwd', 'utf8', callback);
+     * ```
+     *
+     * When the path is a directory, the behavior of `fs.readFile()` and {@link readFileSync} is platform-specific. On macOS, Linux, and Windows, an
+     * error will be returned. On FreeBSD, a representation of the directory's contents
+     * will be returned.
+     *
+     * ```js
+     * import { readFile } from 'fs';
+     *
+     * // macOS, Linux, and Windows
+     * readFile('<directory>', (err, data) => {
+     *   // => [Error: EISDIR: illegal operation on a directory, read <directory>]
+     * });
+     *
+     * //  FreeBSD
+     * readFile('<directory>', (err, data) => {
+     *   // => null, <data>
+     * });
+     * ```
+     *
+     * It is possible to abort an ongoing request using an `AbortSignal`. If a
+     * request is aborted the callback is called with an `AbortError`:
+     *
+     * ```js
+     * import { readFile } from 'fs';
+     *
+     * const controller = new AbortController();
+     * const signal = controller.signal;
+     * readFile(fileInfo[0].name, { signal }, (err, buf) => {
+     *   // ...
+     * });
+     * // When you want to abort the request
+     * controller.abort();
+     * ```
+     *
+     * The `fs.readFile()` function buffers the entire file. To minimize memory costs,
+     * when possible prefer streaming via `fs.createReadStream()`.
+     *
+     * Aborting an ongoing request does not abort individual operating
+     * system requests but rather the internal buffering `fs.readFile` performs.
+     * @since v0.1.29
+     * @param path filename or file descriptor
+     */
+    export function readFile(
+        path: PathOrFileDescriptor,
+        options:
+            | ({
+                  encoding?: null | undefined;
+                  flag?: string | undefined;
+              } & Abortable)
+            | undefined
+            | null,
+        callback: (err: NodeJS.ErrnoException | null, data: Buffer) => void
+    ): void;
+    /**
+     * Asynchronously reads the entire contents of a file.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+     * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag.
+     * If a flag is not provided, it defaults to `'r'`.
+     */
+    export function readFile(
+        path: PathOrFileDescriptor,
+        options:
+            | ({
+                  encoding: BufferEncoding;
+                  flag?: string | undefined;
+              } & Abortable)
+            | BufferEncoding,
+        callback: (err: NodeJS.ErrnoException | null, data: string) => void
+    ): void;
+    /**
+     * Asynchronously reads the entire contents of a file.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+     * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag.
+     * If a flag is not provided, it defaults to `'r'`.
+     */
+    export function readFile(
+        path: PathOrFileDescriptor,
+        options:
+            | (ObjectEncodingOptions & {
+                  flag?: string | undefined;
+              } & Abortable)
+            | BufferEncoding
+            | undefined
+            | null,
+        callback: (err: NodeJS.ErrnoException | null, data: string | Buffer) => void
+    ): void;
+    /**
+     * Asynchronously reads the entire contents of a file.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+     */
+    export function readFile(path: PathOrFileDescriptor, callback: (err: NodeJS.ErrnoException | null, data: Buffer) => void): void;
+    export namespace readFile {
+        /**
+         * Asynchronously reads the entire contents of a file.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+         * @param options An object that may contain an optional flag.
+         * If a flag is not provided, it defaults to `'r'`.
+         */
+        function __promisify__(
+            path: PathOrFileDescriptor,
+            options?: {
+                encoding?: null | undefined;
+                flag?: string | undefined;
+            } | null
+        ): Promise<Buffer>;
+        /**
+         * Asynchronously reads the entire contents of a file.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * URL support is _experimental_.
+         * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+         * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag.
+         * If a flag is not provided, it defaults to `'r'`.
+         */
+        function __promisify__(
+            path: PathOrFileDescriptor,
+            options:
+                | {
+                      encoding: BufferEncoding;
+                      flag?: string | undefined;
+                  }
+                | BufferEncoding
+        ): Promise<string>;
+        /**
+         * Asynchronously reads the entire contents of a file.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * URL support is _experimental_.
+         * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+         * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag.
+         * If a flag is not provided, it defaults to `'r'`.
+         */
+        function __promisify__(
+            path: PathOrFileDescriptor,
+            options?:
+                | (ObjectEncodingOptions & {
+                      flag?: string | undefined;
+                  })
+                | BufferEncoding
+                | null
+        ): Promise<string | Buffer>;
+    }
+    /**
+     * Returns the contents of the `path`.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link readFile}.
+     *
+     * If the `encoding` option is specified then this function returns a
+     * string. Otherwise it returns a buffer.
+     *
+     * Similar to {@link readFile}, when the path is a directory, the behavior of`fs.readFileSync()` is platform-specific.
+     *
+     * ```js
+     * import { readFileSync } from 'fs';
+     *
+     * // macOS, Linux, and Windows
+     * readFileSync('<directory>');
+     * // => [Error: EISDIR: illegal operation on a directory, read <directory>]
+     *
+     * //  FreeBSD
+     * readFileSync('<directory>'); // => <data>
+     * ```
+     * @since v0.1.8
+     * @param path filename or file descriptor
+     */
+    export function readFileSync(
+        path: PathOrFileDescriptor,
+        options?: {
+            encoding?: null | undefined;
+            flag?: string | undefined;
+        } | null
+    ): Buffer;
+    /**
+     * Synchronously reads the entire contents of a file.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+     * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag.
+     * If a flag is not provided, it defaults to `'r'`.
+     */
+    export function readFileSync(
+        path: PathOrFileDescriptor,
+        options:
+            | {
+                  encoding: BufferEncoding;
+                  flag?: string | undefined;
+              }
+            | BufferEncoding
+    ): string;
+    /**
+     * Synchronously reads the entire contents of a file.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+     * @param options Either the encoding for the result, or an object that contains the encoding and an optional flag.
+     * If a flag is not provided, it defaults to `'r'`.
+     */
+    export function readFileSync(
+        path: PathOrFileDescriptor,
+        options?:
+            | (ObjectEncodingOptions & {
+                  flag?: string | undefined;
+              })
+            | BufferEncoding
+            | null
+    ): string | Buffer;
+    export type WriteFileOptions =
+        | (ObjectEncodingOptions &
+              Abortable & {
+                  mode?: Mode | undefined;
+                  flag?: string | undefined;
+              })
+        | BufferEncoding
+        | null;
+    /**
+     * When `file` is a filename, asynchronously writes data to the file, replacing the
+     * file if it already exists. `data` can be a string or a buffer.
+     *
+     * When `file` is a file descriptor, the behavior is similar to calling`fs.write()` directly (which is recommended). See the notes below on using
+     * a file descriptor.
+     *
+     * The `encoding` option is ignored if `data` is a buffer.
+     *
+     * The `mode` option only affects the newly created file. See {@link open} for more details.
+     *
+     * ```js
+     * import { writeFile } from 'fs';
+     * import { Buffer } from 'buffer';
+     *
+     * const data = new Uint8Array(Buffer.from('Hello Node.js'));
+     * writeFile('message.txt', data, (err) => {
+     *   if (err) throw err;
+     *   console.log('The file has been saved!');
+     * });
+     * ```
+     *
+     * If `options` is a string, then it specifies the encoding:
+     *
+     * ```js
+     * import { writeFile } from 'fs';
+     *
+     * writeFile('message.txt', 'Hello Node.js', 'utf8', callback);
+     * ```
+     *
+     * It is unsafe to use `fs.writeFile()` multiple times on the same file without
+     * waiting for the callback. For this scenario, {@link createWriteStream} is
+     * recommended.
+     *
+     * Similarly to `fs.readFile` \- `fs.writeFile` is a convenience method that
+     * performs multiple `write` calls internally to write the buffer passed to it.
+     * For performance sensitive code consider using {@link createWriteStream}.
+     *
+     * It is possible to use an `AbortSignal` to cancel an `fs.writeFile()`.
+     * Cancelation is "best effort", and some amount of data is likely still
+     * to be written.
+     *
+     * ```js
+     * import { writeFile } from 'fs';
+     * import { Buffer } from 'buffer';
+     *
+     * const controller = new AbortController();
+     * const { signal } = controller;
+     * const data = new Uint8Array(Buffer.from('Hello Node.js'));
+     * writeFile('message.txt', data, { signal }, (err) => {
+     *   // When a request is aborted - the callback is called with an AbortError
+     * });
+     * // When the request should be aborted
+     * controller.abort();
+     * ```
+     *
+     * Aborting an ongoing request does not abort individual operating
+     * system requests but rather the internal buffering `fs.writeFile` performs.
+     * @since v0.1.29
+     * @param file filename or file descriptor
+     */
+    export function writeFile(file: PathOrFileDescriptor, data: string | NodeJS.ArrayBufferView, options: WriteFileOptions, callback: NoParamCallback): void;
+    /**
+     * Asynchronously writes data to a file, replacing the file if it already exists.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+     * @param data The data to write. If something other than a Buffer or Uint8Array is provided, the value is coerced to a string.
+     */
+    export function writeFile(path: PathOrFileDescriptor, data: string | NodeJS.ArrayBufferView, callback: NoParamCallback): void;
+    export namespace writeFile {
+        /**
+         * Asynchronously writes data to a file, replacing the file if it already exists.
+         * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * URL support is _experimental_.
+         * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+         * @param data The data to write. If something other than a Buffer or Uint8Array is provided, the value is coerced to a string.
+         * @param options Either the encoding for the file, or an object optionally specifying the encoding, file mode, and flag.
+         * If `encoding` is not supplied, the default of `'utf8'` is used.
+         * If `mode` is not supplied, the default of `0o666` is used.
+         * If `mode` is a string, it is parsed as an octal integer.
+         * If `flag` is not supplied, the default of `'w'` is used.
+         */
+        function __promisify__(path: PathOrFileDescriptor, data: string | NodeJS.ArrayBufferView, options?: WriteFileOptions): Promise<void>;
+    }
+    /**
+     * Returns `undefined`.
+     *
+     * The `mode` option only affects the newly created file. See {@link open} for more details.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link writeFile}.
+     * @since v0.1.29
+     * @param file filename or file descriptor
+     */
+    export function writeFileSync(file: PathOrFileDescriptor, data: string | NodeJS.ArrayBufferView, options?: WriteFileOptions): void;
+    /**
+     * Asynchronously append data to a file, creating the file if it does not yet
+     * exist. `data` can be a string or a `Buffer`.
+     *
+     * The `mode` option only affects the newly created file. See {@link open} for more details.
+     *
+     * ```js
+     * import { appendFile } from 'fs';
+     *
+     * appendFile('message.txt', 'data to append', (err) => {
+     *   if (err) throw err;
+     *   console.log('The "data to append" was appended to file!');
+     * });
+     * ```
+     *
+     * If `options` is a string, then it specifies the encoding:
+     *
+     * ```js
+     * import { appendFile } from 'fs';
+     *
+     * appendFile('message.txt', 'data to append', 'utf8', callback);
+     * ```
+     *
+     * The `path` may be specified as a numeric file descriptor that has been opened
+     * for appending (using `fs.open()` or `fs.openSync()`). The file descriptor will
+     * not be closed automatically.
+     *
+     * ```js
+     * import { open, close, appendFile } from 'fs';
+     *
+     * function closeFd(fd) {
+     *   close(fd, (err) => {
+     *     if (err) throw err;
+     *   });
+     * }
+     *
+     * open('message.txt', 'a', (err, fd) => {
+     *   if (err) throw err;
+     *
+     *   try {
+     *     appendFile(fd, 'data to append', 'utf8', (err) => {
+     *       closeFd(fd);
+     *       if (err) throw err;
+     *     });
+     *   } catch (err) {
+     *     closeFd(fd);
+     *     throw err;
+     *   }
+     * });
+     * ```
+     * @since v0.6.7
+     * @param path filename or file descriptor
+     */
+    export function appendFile(path: PathOrFileDescriptor, data: string | Uint8Array, options: WriteFileOptions, callback: NoParamCallback): void;
+    /**
+     * Asynchronously append data to a file, creating the file if it does not exist.
+     * @param file A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+     * @param data The data to write. If something other than a Buffer or Uint8Array is provided, the value is coerced to a string.
+     */
+    export function appendFile(file: PathOrFileDescriptor, data: string | Uint8Array, callback: NoParamCallback): void;
+    export namespace appendFile {
+        /**
+         * Asynchronously append data to a file, creating the file if it does not exist.
+         * @param file A path to a file. If a URL is provided, it must use the `file:` protocol.
+         * URL support is _experimental_.
+         * If a file descriptor is provided, the underlying file will _not_ be closed automatically.
+         * @param data The data to write. If something other than a Buffer or Uint8Array is provided, the value is coerced to a string.
+         * @param options Either the encoding for the file, or an object optionally specifying the encoding, file mode, and flag.
+         * If `encoding` is not supplied, the default of `'utf8'` is used.
+         * If `mode` is not supplied, the default of `0o666` is used.
+         * If `mode` is a string, it is parsed as an octal integer.
+         * If `flag` is not supplied, the default of `'a'` is used.
+         */
+        function __promisify__(file: PathOrFileDescriptor, data: string | Uint8Array, options?: WriteFileOptions): Promise<void>;
+    }
+    /**
+     * Synchronously append data to a file, creating the file if it does not yet
+     * exist. `data` can be a string or a `Buffer`.
+     *
+     * The `mode` option only affects the newly created file. See {@link open} for more details.
+     *
+     * ```js
+     * import { appendFileSync } from 'fs';
+     *
+     * try {
+     *   appendFileSync('message.txt', 'data to append');
+     *   console.log('The "data to append" was appended to file!');
+     * } catch (err) {
+     *   // Handle the error
+     * }
+     * ```
+     *
+     * If `options` is a string, then it specifies the encoding:
+     *
+     * ```js
+     * import { appendFileSync } from 'fs';
+     *
+     * appendFileSync('message.txt', 'data to append', 'utf8');
+     * ```
+     *
+     * The `path` may be specified as a numeric file descriptor that has been opened
+     * for appending (using `fs.open()` or `fs.openSync()`). The file descriptor will
+     * not be closed automatically.
+     *
+     * ```js
+     * import { openSync, closeSync, appendFileSync } from 'fs';
+     *
+     * let fd;
+     *
+     * try {
+     *   fd = openSync('message.txt', 'a');
+     *   appendFileSync(fd, 'data to append', 'utf8');
+     * } catch (err) {
+     *   // Handle the error
+     * } finally {
+     *   if (fd !== undefined)
+     *     closeSync(fd);
+     * }
+     * ```
+     * @since v0.6.7
+     * @param path filename or file descriptor
+     */
+    export function appendFileSync(path: PathOrFileDescriptor, data: string | Uint8Array, options?: WriteFileOptions): void;
+    /**
+     * Watch for changes on `filename`. The callback `listener` will be called each
+     * time the file is accessed.
+     *
+     * The `options` argument may be omitted. If provided, it should be an object. The`options` object may contain a boolean named `persistent` that indicates
+     * whether the process should continue to run as long as files are being watched.
+     * The `options` object may specify an `interval` property indicating how often the
+     * target should be polled in milliseconds.
+     *
+     * The `listener` gets two arguments the current stat object and the previous
+     * stat object:
+     *
+     * ```js
+     * import { watchFile } from 'fs';
+     *
+     * watchFile('message.text', (curr, prev) => {
+     *   console.log(`the current mtime is: ${curr.mtime}`);
+     *   console.log(`the previous mtime was: ${prev.mtime}`);
+     * });
+     * ```
+     *
+     * These stat objects are instances of `fs.Stat`. If the `bigint` option is `true`,
+     * the numeric values in these objects are specified as `BigInt`s.
+     *
+     * To be notified when the file was modified, not just accessed, it is necessary
+     * to compare `curr.mtimeMs` and `prev.mtimeMs`.
+     *
+     * When an `fs.watchFile` operation results in an `ENOENT` error, it
+     * will invoke the listener once, with all the fields zeroed (or, for dates, the
+     * Unix Epoch). If the file is created later on, the listener will be called
+     * again, with the latest stat objects. This is a change in functionality since
+     * v0.10.
+     *
+     * Using {@link watch} is more efficient than `fs.watchFile` and`fs.unwatchFile`. `fs.watch` should be used instead of `fs.watchFile` and`fs.unwatchFile` when possible.
+     *
+     * When a file being watched by `fs.watchFile()` disappears and reappears,
+     * then the contents of `previous` in the second callback event (the file's
+     * reappearance) will be the same as the contents of `previous` in the first
+     * callback event (its disappearance).
+     *
+     * This happens when:
+     *
+     * * the file is deleted, followed by a restore
+     * * the file is renamed and then renamed a second time back to its original name
+     * @since v0.1.31
+     */
+    export interface WatchFileOptions {
+        bigint?: boolean | undefined;
+        persistent?: boolean | undefined;
+        interval?: number | undefined;
+    }
+    /**
+     * Watch for changes on `filename`. The callback `listener` will be called each
+     * time the file is accessed.
+     *
+     * The `options` argument may be omitted. If provided, it should be an object. The`options` object may contain a boolean named `persistent` that indicates
+     * whether the process should continue to run as long as files are being watched.
+     * The `options` object may specify an `interval` property indicating how often the
+     * target should be polled in milliseconds.
+     *
+     * The `listener` gets two arguments the current stat object and the previous
+     * stat object:
+     *
+     * ```js
+     * import { watchFile } from 'fs';
+     *
+     * watchFile('message.text', (curr, prev) => {
+     *   console.log(`the current mtime is: ${curr.mtime}`);
+     *   console.log(`the previous mtime was: ${prev.mtime}`);
+     * });
+     * ```
+     *
+     * These stat objects are instances of `fs.Stat`. If the `bigint` option is `true`,
+     * the numeric values in these objects are specified as `BigInt`s.
+     *
+     * To be notified when the file was modified, not just accessed, it is necessary
+     * to compare `curr.mtimeMs` and `prev.mtimeMs`.
+     *
+     * When an `fs.watchFile` operation results in an `ENOENT` error, it
+     * will invoke the listener once, with all the fields zeroed (or, for dates, the
+     * Unix Epoch). If the file is created later on, the listener will be called
+     * again, with the latest stat objects. This is a change in functionality since
+     * v0.10.
+     *
+     * Using {@link watch} is more efficient than `fs.watchFile` and`fs.unwatchFile`. `fs.watch` should be used instead of `fs.watchFile` and`fs.unwatchFile` when possible.
+     *
+     * When a file being watched by `fs.watchFile()` disappears and reappears,
+     * then the contents of `previous` in the second callback event (the file's
+     * reappearance) will be the same as the contents of `previous` in the first
+     * callback event (its disappearance).
+     *
+     * This happens when:
+     *
+     * * the file is deleted, followed by a restore
+     * * the file is renamed and then renamed a second time back to its original name
+     * @since v0.1.31
+     */
+    export function watchFile(
+        filename: PathLike,
+        options:
+            | (WatchFileOptions & {
+                  bigint?: false | undefined;
+              })
+            | undefined,
+        listener: (curr: Stats, prev: Stats) => void
+    ): StatWatcher;
+    export function watchFile(
+        filename: PathLike,
+        options:
+            | (WatchFileOptions & {
+                  bigint: true;
+              })
+            | undefined,
+        listener: (curr: BigIntStats, prev: BigIntStats) => void
+    ): StatWatcher;
+    /**
+     * Watch for changes on `filename`. The callback `listener` will be called each time the file is accessed.
+     * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function watchFile(filename: PathLike, listener: (curr: Stats, prev: Stats) => void): StatWatcher;
+    /**
+     * Stop watching for changes on `filename`. If `listener` is specified, only that
+     * particular listener is removed. Otherwise, _all_ listeners are removed,
+     * effectively stopping watching of `filename`.
+     *
+     * Calling `fs.unwatchFile()` with a filename that is not being watched is a
+     * no-op, not an error.
+     *
+     * Using {@link watch} is more efficient than `fs.watchFile()` and`fs.unwatchFile()`. `fs.watch()` should be used instead of `fs.watchFile()`and `fs.unwatchFile()` when possible.
+     * @since v0.1.31
+     * @param listener Optional, a listener previously attached using `fs.watchFile()`
+     */
+    export function unwatchFile(filename: PathLike, listener?: (curr: Stats, prev: Stats) => void): void;
+    export interface WatchOptions extends Abortable {
+        encoding?: BufferEncoding | 'buffer' | undefined;
+        persistent?: boolean | undefined;
+        recursive?: boolean | undefined;
+    }
+    export type WatchEventType = 'rename' | 'change';
+    export type WatchListener<T> = (event: WatchEventType, filename: T) => void;
+    /**
+     * Watch for changes on `filename`, where `filename` is either a file or a
+     * directory.
+     *
+     * The second argument is optional. If `options` is provided as a string, it
+     * specifies the `encoding`. Otherwise `options` should be passed as an object.
+     *
+     * The listener callback gets two arguments `(eventType, filename)`. `eventType`is either `'rename'` or `'change'`, and `filename` is the name of the file
+     * which triggered the event.
+     *
+     * On most platforms, `'rename'` is emitted whenever a filename appears or
+     * disappears in the directory.
+     *
+     * The listener callback is attached to the `'change'` event fired by `fs.FSWatcher`, but it is not the same thing as the `'change'` value of`eventType`.
+     *
+     * If a `signal` is passed, aborting the corresponding AbortController will close
+     * the returned `fs.FSWatcher`.
+     * @since v0.5.10
+     * @param listener
+     */
+    export function watch(
+        filename: PathLike,
+        options:
+            | (WatchOptions & {
+                  encoding: 'buffer';
+              })
+            | 'buffer',
+        listener?: WatchListener<Buffer>
+    ): FSWatcher;
+    /**
+     * Watch for changes on `filename`, where `filename` is either a file or a directory, returning an `FSWatcher`.
+     * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the encoding for the filename provided to the listener, or an object optionally specifying encoding, persistent, and recursive options.
+     * If `encoding` is not supplied, the default of `'utf8'` is used.
+     * If `persistent` is not supplied, the default of `true` is used.
+     * If `recursive` is not supplied, the default of `false` is used.
+     */
+    export function watch(filename: PathLike, options?: WatchOptions | BufferEncoding | null, listener?: WatchListener<string>): FSWatcher;
+    /**
+     * Watch for changes on `filename`, where `filename` is either a file or a directory, returning an `FSWatcher`.
+     * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the encoding for the filename provided to the listener, or an object optionally specifying encoding, persistent, and recursive options.
+     * If `encoding` is not supplied, the default of `'utf8'` is used.
+     * If `persistent` is not supplied, the default of `true` is used.
+     * If `recursive` is not supplied, the default of `false` is used.
+     */
+    export function watch(filename: PathLike, options: WatchOptions | string, listener?: WatchListener<string | Buffer>): FSWatcher;
+    /**
+     * Watch for changes on `filename`, where `filename` is either a file or a directory, returning an `FSWatcher`.
+     * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function watch(filename: PathLike, listener?: WatchListener<string>): FSWatcher;
+    /**
+     * Test whether or not the given path exists by checking with the file system.
+     * Then call the `callback` argument with either true or false:
+     *
+     * ```js
+     * import { exists } from 'fs';
+     *
+     * exists('/etc/passwd', (e) => {
+     *   console.log(e ? 'it exists' : 'no passwd!');
+     * });
+     * ```
+     *
+     * **The parameters for this callback are not consistent with other Node.js**
+     * **callbacks.** Normally, the first parameter to a Node.js callback is an `err`parameter, optionally followed by other parameters. The `fs.exists()` callback
+     * has only one boolean parameter. This is one reason `fs.access()` is recommended
+     * instead of `fs.exists()`.
+     *
+     * Using `fs.exists()` to check for the existence of a file before calling`fs.open()`, `fs.readFile()` or `fs.writeFile()` is not recommended. Doing
+     * so introduces a race condition, since other processes may change the file's
+     * state between the two calls. Instead, user code should open/read/write the
+     * file directly and handle the error raised if the file does not exist.
+     *
+     * **write (NOT RECOMMENDED)**
+     *
+     * ```js
+     * import { exists, open, close } from 'fs';
+     *
+     * exists('myfile', (e) => {
+     *   if (e) {
+     *     console.error('myfile already exists');
+     *   } else {
+     *     open('myfile', 'wx', (err, fd) => {
+     *       if (err) throw err;
+     *
+     *       try {
+     *         writeMyData(fd);
+     *       } finally {
+     *         close(fd, (err) => {
+     *           if (err) throw err;
+     *         });
+     *       }
+     *     });
+     *   }
+     * });
+     * ```
+     *
+     * **write (RECOMMENDED)**
+     *
+     * ```js
+     * import { open, close } from 'fs';
+     * open('myfile', 'wx', (err, fd) => {
+     *   if (err) {
+     *     if (err.code === 'EEXIST') {
+     *       console.error('myfile already exists');
+     *       return;
+     *     }
+     *
+     *     throw err;
+     *   }
+     *
+     *   try {
+     *     writeMyData(fd);
+     *   } finally {
+     *     close(fd, (err) => {
+     *       if (err) throw err;
+     *     });
+     *   }
+     * });
+     * ```
+     *
+     * **read (NOT RECOMMENDED)**
+     *
+     * ```js
+     * import { open, close, exists } from 'fs';
+     *
+     * exists('myfile', (e) => {
+     *   if (e) {
+     *     open('myfile', 'r', (err, fd) => {
+     *       if (err) throw err;
+     *
+     *       try {
+     *         readMyData(fd);
+     *       } finally {
+     *         close(fd, (err) => {
+     *           if (err) throw err;
+     *         });
+     *       }
+     *     });
+     *   } else {
+     *     console.error('myfile does not exist');
+     *   }
+     * });
+     * ```
+     *
+     * **read (RECOMMENDED)**
+     *
+     * ```js
+     * import { open, close } from 'fs';
+     *
+     * open('myfile', 'r', (err, fd) => {
+     *   if (err) {
+     *     if (err.code === 'ENOENT') {
+     *       console.error('myfile does not exist');
+     *       return;
+     *     }
+     *
+     *     throw err;
+     *   }
+     *
+     *   try {
+     *     readMyData(fd);
+     *   } finally {
+     *     close(fd, (err) => {
+     *       if (err) throw err;
+     *     });
+     *   }
+     * });
+     * ```
+     *
+     * The "not recommended" examples above check for existence and then use the
+     * file; the "recommended" examples are better because they use the file directly
+     * and handle the error, if any.
+     *
+     * In general, check for the existence of a file only if the file won’t be
+     * used directly, for example when its existence is a signal from another
+     * process.
+     * @since v0.0.2
+     * @deprecated Since v1.0.0 - Use {@link stat} or {@link access} instead.
+     */
+    export function exists(path: PathLike, callback: (exists: boolean) => void): void;
+    /** @deprecated */
+    export namespace exists {
+        /**
+         * @param path A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+         * URL support is _experimental_.
+         */
+        function __promisify__(path: PathLike): Promise<boolean>;
+    }
+    /**
+     * Returns `true` if the path exists, `false` otherwise.
+     *
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link exists}.
+     *
+     * `fs.exists()` is deprecated, but `fs.existsSync()` is not. The `callback`parameter to `fs.exists()` accepts parameters that are inconsistent with other
+     * Node.js callbacks. `fs.existsSync()` does not use a callback.
+     *
+     * ```js
+     * import { existsSync } from 'fs';
+     *
+     * if (existsSync('/etc/passwd'))
+     *   console.log('The path exists.');
+     * ```
+     * @since v0.1.21
+     */
+    export function existsSync(path: PathLike): boolean;
+    export namespace constants {
+        // File Access Constants
+        /** Constant for fs.access(). File is visible to the calling process. */
+        const F_OK: number;
+        /** Constant for fs.access(). File can be read by the calling process. */
+        const R_OK: number;
+        /** Constant for fs.access(). File can be written by the calling process. */
+        const W_OK: number;
+        /** Constant for fs.access(). File can be executed by the calling process. */
+        const X_OK: number;
+        // File Copy Constants
+        /** Constant for fs.copyFile. Flag indicating the destination file should not be overwritten if it already exists. */
+        const COPYFILE_EXCL: number;
+        /**
+         * Constant for fs.copyFile. copy operation will attempt to create a copy-on-write reflink.
+         * If the underlying platform does not support copy-on-write, then a fallback copy mechanism is used.
+         */
+        const COPYFILE_FICLONE: number;
+        /**
+         * Constant for fs.copyFile. Copy operation will attempt to create a copy-on-write reflink.
+         * If the underlying platform does not support copy-on-write, then the operation will fail with an error.
+         */
+        const COPYFILE_FICLONE_FORCE: number;
+        // File Open Constants
+        /** Constant for fs.open(). Flag indicating to open a file for read-only access. */
+        const O_RDONLY: number;
+        /** Constant for fs.open(). Flag indicating to open a file for write-only access. */
+        const O_WRONLY: number;
+        /** Constant for fs.open(). Flag indicating to open a file for read-write access. */
+        const O_RDWR: number;
+        /** Constant for fs.open(). Flag indicating to create the file if it does not already exist. */
+        const O_CREAT: number;
+        /** Constant for fs.open(). Flag indicating that opening a file should fail if the O_CREAT flag is set and the file already exists. */
+        const O_EXCL: number;
+        /**
+         * Constant for fs.open(). Flag indicating that if path identifies a terminal device,
+         * opening the path shall not cause that terminal to become the controlling terminal for the process
+         * (if the process does not already have one).
+         */
+        const O_NOCTTY: number;
+        /** Constant for fs.open(). Flag indicating that if the file exists and is a regular file, and the file is opened successfully for write access, its length shall be truncated to zero. */
+        const O_TRUNC: number;
+        /** Constant for fs.open(). Flag indicating that data will be appended to the end of the file. */
+        const O_APPEND: number;
+        /** Constant for fs.open(). Flag indicating that the open should fail if the path is not a directory. */
+        const O_DIRECTORY: number;
+        /**
+         * constant for fs.open().
+         * Flag indicating reading accesses to the file system will no longer result in
+         * an update to the atime information associated with the file.
+         * This flag is available on Linux operating systems only.
+         */
+        const O_NOATIME: number;
+        /** Constant for fs.open(). Flag indicating that the open should fail if the path is a symbolic link. */
+        const O_NOFOLLOW: number;
+        /** Constant for fs.open(). Flag indicating that the file is opened for synchronous I/O. */
+        const O_SYNC: number;
+        /** Constant for fs.open(). Flag indicating that the file is opened for synchronous I/O with write operations waiting for data integrity. */
+        const O_DSYNC: number;
+        /** Constant for fs.open(). Flag indicating to open the symbolic link itself rather than the resource it is pointing to. */
+        const O_SYMLINK: number;
+        /** Constant for fs.open(). When set, an attempt will be made to minimize caching effects of file I/O. */
+        const O_DIRECT: number;
+        /** Constant for fs.open(). Flag indicating to open the file in nonblocking mode when possible. */
+        const O_NONBLOCK: number;
+        // File Type Constants
+        /** Constant for fs.Stats mode property for determining a file's type. Bit mask used to extract the file type code. */
+        const S_IFMT: number;
+        /** Constant for fs.Stats mode property for determining a file's type. File type constant for a regular file. */
+        const S_IFREG: number;
+        /** Constant for fs.Stats mode property for determining a file's type. File type constant for a directory. */
+        const S_IFDIR: number;
+        /** Constant for fs.Stats mode property for determining a file's type. File type constant for a character-oriented device file. */
+        const S_IFCHR: number;
+        /** Constant for fs.Stats mode property for determining a file's type. File type constant for a block-oriented device file. */
+        const S_IFBLK: number;
+        /** Constant for fs.Stats mode property for determining a file's type. File type constant for a FIFO/pipe. */
+        const S_IFIFO: number;
+        /** Constant for fs.Stats mode property for determining a file's type. File type constant for a symbolic link. */
+        const S_IFLNK: number;
+        /** Constant for fs.Stats mode property for determining a file's type. File type constant for a socket. */
+        const S_IFSOCK: number;
+        // File Mode Constants
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable, writable and executable by owner. */
+        const S_IRWXU: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable by owner. */
+        const S_IRUSR: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating writable by owner. */
+        const S_IWUSR: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating executable by owner. */
+        const S_IXUSR: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable, writable and executable by group. */
+        const S_IRWXG: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable by group. */
+        const S_IRGRP: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating writable by group. */
+        const S_IWGRP: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating executable by group. */
+        const S_IXGRP: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable, writable and executable by others. */
+        const S_IRWXO: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating readable by others. */
+        const S_IROTH: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating writable by others. */
+        const S_IWOTH: number;
+        /** Constant for fs.Stats mode property for determining access permissions for a file. File mode indicating executable by others. */
+        const S_IXOTH: number;
+        /**
+         * When set, a memory file mapping is used to access the file. This flag
+         * is available on Windows operating systems only. On other operating systems,
+         * this flag is ignored.
+         */
+        const UV_FS_O_FILEMAP: number;
+    }
+    /**
+     * Tests a user's permissions for the file or directory specified by `path`.
+     * The `mode` argument is an optional integer that specifies the accessibility
+     * checks to be performed. `mode` should be either the value `fs.constants.F_OK`or a mask consisting of the bitwise OR of any of `fs.constants.R_OK`,`fs.constants.W_OK`, and `fs.constants.X_OK`
+     * (e.g.`fs.constants.W_OK | fs.constants.R_OK`). Check `File access constants` for
+     * possible values of `mode`.
+     *
+     * The final argument, `callback`, is a callback function that is invoked with
+     * a possible error argument. If any of the accessibility checks fail, the error
+     * argument will be an `Error` object. The following examples check if`package.json` exists, and if it is readable or writable.
+     *
+     * ```js
+     * import { access, constants } from 'fs';
+     *
+     * const file = 'package.json';
+     *
+     * // Check if the file exists in the current directory.
+     * access(file, constants.F_OK, (err) => {
+     *   console.log(`${file} ${err ? 'does not exist' : 'exists'}`);
+     * });
+     *
+     * // Check if the file is readable.
+     * access(file, constants.R_OK, (err) => {
+     *   console.log(`${file} ${err ? 'is not readable' : 'is readable'}`);
+     * });
+     *
+     * // Check if the file is writable.
+     * access(file, constants.W_OK, (err) => {
+     *   console.log(`${file} ${err ? 'is not writable' : 'is writable'}`);
+     * });
+     *
+     * // Check if the file is readable and writable.
+     * access(file, constants.R_OK | constants.W_OK, (err) => {
+     *   console.log(`${file} ${err ? 'is not' : 'is'} readable and writable`);
+     * });
+     * ```
+     *
+     * Do not use `fs.access()` to check for the accessibility of a file before calling`fs.open()`, `fs.readFile()` or `fs.writeFile()`. Doing
+     * so introduces a race condition, since other processes may change the file's
+     * state between the two calls. Instead, user code should open/read/write the
+     * file directly and handle the error raised if the file is not accessible.
+     *
+     * **write (NOT RECOMMENDED)**
+     *
+     * ```js
+     * import { access, open, close } from 'fs';
+     *
+     * access('myfile', (err) => {
+     *   if (!err) {
+     *     console.error('myfile already exists');
+     *     return;
+     *   }
+     *
+     *   open('myfile', 'wx', (err, fd) => {
+     *     if (err) throw err;
+     *
+     *     try {
+     *       writeMyData(fd);
+     *     } finally {
+     *       close(fd, (err) => {
+     *         if (err) throw err;
+     *       });
+     *     }
+     *   });
+     * });
+     * ```
+     *
+     * **write (RECOMMENDED)**
+     *
+     * ```js
+     * import { open, close } from 'fs';
+     *
+     * open('myfile', 'wx', (err, fd) => {
+     *   if (err) {
+     *     if (err.code === 'EEXIST') {
+     *       console.error('myfile already exists');
+     *       return;
+     *     }
+     *
+     *     throw err;
+     *   }
+     *
+     *   try {
+     *     writeMyData(fd);
+     *   } finally {
+     *     close(fd, (err) => {
+     *       if (err) throw err;
+     *     });
+     *   }
+     * });
+     * ```
+     *
+     * **read (NOT RECOMMENDED)**
+     *
+     * ```js
+     * import { access, open, close } from 'fs';
+     * access('myfile', (err) => {
+     *   if (err) {
+     *     if (err.code === 'ENOENT') {
+     *       console.error('myfile does not exist');
+     *       return;
+     *     }
+     *
+     *     throw err;
+     *   }
+     *
+     *   open('myfile', 'r', (err, fd) => {
+     *     if (err) throw err;
+     *
+     *     try {
+     *       readMyData(fd);
+     *     } finally {
+     *       close(fd, (err) => {
+     *         if (err) throw err;
+     *       });
+     *     }
+     *   });
+     * });
+     * ```
+     *
+     * **read (RECOMMENDED)**
+     *
+     * ```js
+     * import { open, close } from 'fs';
+     *
+     * open('myfile', 'r', (err, fd) => {
+     *   if (err) {
+     *     if (err.code === 'ENOENT') {
+     *       console.error('myfile does not exist');
+     *       return;
+     *     }
+     *
+     *     throw err;
+     *   }
+     *
+     *   try {
+     *     readMyData(fd);
+     *   } finally {
+     *     close(fd, (err) => {
+     *       if (err) throw err;
+     *     });
+     *   }
+     * });
+     * ```
+     *
+     * The "not recommended" examples above check for accessibility and then use the
+     * file; the "recommended" examples are better because they use the file directly
+     * and handle the error, if any.
+     *
+     * In general, check for the accessibility of a file only if the file will not be
+     * used directly, for example when its accessibility is a signal from another
+     * process.
+     *
+     * On Windows, access-control policies (ACLs) on a directory may limit access to
+     * a file or directory. The `fs.access()` function, however, does not check the
+     * ACL and therefore may report that a path is accessible even if the ACL restricts
+     * the user from reading or writing to it.
+     * @since v0.11.15
+     * @param [mode=fs.constants.F_OK]
+     */
+    export function access(path: PathLike, mode: number | undefined, callback: NoParamCallback): void;
+    /**
+     * Asynchronously tests a user's permissions for the file specified by path.
+     * @param path A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+     */
+    export function access(path: PathLike, callback: NoParamCallback): void;
+    export namespace access {
+        /**
+         * Asynchronously tests a user's permissions for the file specified by path.
+         * @param path A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+         * URL support is _experimental_.
+         */
+        function __promisify__(path: PathLike, mode?: number): Promise<void>;
+    }
+    /**
+     * Synchronously tests a user's permissions for the file or directory specified
+     * by `path`. The `mode` argument is an optional integer that specifies the
+     * accessibility checks to be performed. `mode` should be either the value`fs.constants.F_OK` or a mask consisting of the bitwise OR of any of`fs.constants.R_OK`, `fs.constants.W_OK`, and
+     * `fs.constants.X_OK` (e.g.`fs.constants.W_OK | fs.constants.R_OK`). Check `File access constants` for
+     * possible values of `mode`.
+     *
+     * If any of the accessibility checks fail, an `Error` will be thrown. Otherwise,
+     * the method will return `undefined`.
+     *
+     * ```js
+     * import { accessSync, constants } from 'fs';
+     *
+     * try {
+     *   accessSync('etc/passwd', constants.R_OK | constants.W_OK);
+     *   console.log('can read/write');
+     * } catch (err) {
+     *   console.error('no access!');
+     * }
+     * ```
+     * @since v0.11.15
+     * @param [mode=fs.constants.F_OK]
+     */
+    export function accessSync(path: PathLike, mode?: number): void;
+    interface StreamOptions {
+        flags?: string | undefined;
+        encoding?: BufferEncoding | undefined;
+        fd?: number | promises.FileHandle | undefined;
+        mode?: number | undefined;
+        autoClose?: boolean | undefined;
+        /**
+         * @default false
+         */
+        emitClose?: boolean | undefined;
+        start?: number | undefined;
+        highWaterMark?: number | undefined;
+    }
+    interface ReadStreamOptions extends StreamOptions {
+        end?: number | undefined;
+    }
+    /**
+     * Unlike the 16 kb default `highWaterMark` for a `stream.Readable`, the stream
+     * returned by this method has a default `highWaterMark` of 64 kb.
+     *
+     * `options` can include `start` and `end` values to read a range of bytes from
+     * the file instead of the entire file. Both `start` and `end` are inclusive and
+     * start counting at 0, allowed values are in the
+     * \[0, [`Number.MAX_SAFE_INTEGER`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER)\] range. If `fd` is specified and `start` is
+     * omitted or `undefined`, `fs.createReadStream()` reads sequentially from the
+     * current file position. The `encoding` can be any one of those accepted by `Buffer`.
+     *
+     * If `fd` is specified, `ReadStream` will ignore the `path` argument and will use
+     * the specified file descriptor. This means that no `'open'` event will be
+     * emitted. `fd` should be blocking; non-blocking `fd`s should be passed to `net.Socket`.
+     *
+     * If `fd` points to a character device that only supports blocking reads
+     * (such as keyboard or sound card), read operations do not finish until data is
+     * available. This can prevent the process from exiting and the stream from
+     * closing naturally.
+     *
+     * By default, the stream will emit a `'close'` event after it has been
+     * destroyed.  Set the `emitClose` option to `false` to change this behavior.
+     *
+     * By providing the `fs` option, it is possible to override the corresponding `fs`implementations for `open`, `read`, and `close`. When providing the `fs` option,
+     * an override for `read` is required. If no `fd` is provided, an override for`open` is also required. If `autoClose` is `true`, an override for `close` is
+     * also required.
+     *
+     * ```js
+     * import { createReadStream } from 'fs';
+     *
+     * // Create a stream from some character device.
+     * const stream = createReadStream('/dev/input/event0');
+     * setTimeout(() => {
+     *   stream.close(); // This may not close the stream.
+     *   // Artificially marking end-of-stream, as if the underlying resource had
+     *   // indicated end-of-file by itself, allows the stream to close.
+     *   // This does not cancel pending read operations, and if there is such an
+     *   // operation, the process may still not be able to exit successfully
+     *   // until it finishes.
+     *   stream.push(null);
+     *   stream.read(0);
+     * }, 100);
+     * ```
+     *
+     * If `autoClose` is false, then the file descriptor won't be closed, even if
+     * there's an error. It is the application's responsibility to close it and make
+     * sure there's no file descriptor leak. If `autoClose` is set to true (default
+     * behavior), on `'error'` or `'end'` the file descriptor will be closed
+     * automatically.
+     *
+     * `mode` sets the file mode (permission and sticky bits), but only if the
+     * file was created.
+     *
+     * An example to read the last 10 bytes of a file which is 100 bytes long:
+     *
+     * ```js
+     * import { createReadStream } from 'fs';
+     *
+     * createReadStream('sample.txt', { start: 90, end: 99 });
+     * ```
+     *
+     * If `options` is a string, then it specifies the encoding.
+     * @since v0.1.31
+     */
+    export function createReadStream(path: PathLike, options?: BufferEncoding | ReadStreamOptions): ReadStream;
+    /**
+     * `options` may also include a `start` option to allow writing data at some
+     * position past the beginning of the file, allowed values are in the
+     * \[0, [`Number.MAX_SAFE_INTEGER`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER)\] range. Modifying a file rather than
+     * replacing it may require the `flags` option to be set to `r+` rather than the
+     * default `w`. The `encoding` can be any one of those accepted by `Buffer`.
+     *
+     * If `autoClose` is set to true (default behavior) on `'error'` or `'finish'`the file descriptor will be closed automatically. If `autoClose` is false,
+     * then the file descriptor won't be closed, even if there's an error.
+     * It is the application's responsibility to close it and make sure there's no
+     * file descriptor leak.
+     *
+     * By default, the stream will emit a `'close'` event after it has been
+     * destroyed.  Set the `emitClose` option to `false` to change this behavior.
+     *
+     * By providing the `fs` option it is possible to override the corresponding `fs`implementations for `open`, `write`, `writev` and `close`. Overriding `write()`without `writev()` can reduce
+     * performance as some optimizations (`_writev()`)
+     * will be disabled. When providing the `fs` option, overrides for at least one of`write` and `writev` are required. If no `fd` option is supplied, an override
+     * for `open` is also required. If `autoClose` is `true`, an override for `close`is also required.
+     *
+     * Like `fs.ReadStream`, if `fd` is specified, `fs.WriteStream` will ignore the`path` argument and will use the specified file descriptor. This means that no`'open'` event will be
+     * emitted. `fd` should be blocking; non-blocking `fd`s
+     * should be passed to `net.Socket`.
+     *
+     * If `options` is a string, then it specifies the encoding.
+     * @since v0.1.31
+     */
+    export function createWriteStream(path: PathLike, options?: BufferEncoding | StreamOptions): WriteStream;
+    /**
+     * Forces all currently queued I/O operations associated with the file to the
+     * operating system's synchronized I/O completion state. Refer to the POSIX [`fdatasync(2)`](http://man7.org/linux/man-pages/man2/fdatasync.2.html) documentation for details. No arguments other
+     * than a possible
+     * exception are given to the completion callback.
+     * @since v0.1.96
+     */
+    export function fdatasync(fd: number, callback: NoParamCallback): void;
+    export namespace fdatasync {
+        /**
+         * Asynchronous fdatasync(2) - synchronize a file's in-core state with storage device.
+         * @param fd A file descriptor.
+         */
+        function __promisify__(fd: number): Promise<void>;
+    }
+    /**
+     * Forces all currently queued I/O operations associated with the file to the
+     * operating system's synchronized I/O completion state. Refer to the POSIX [`fdatasync(2)`](http://man7.org/linux/man-pages/man2/fdatasync.2.html) documentation for details. Returns `undefined`.
+     * @since v0.1.96
+     */
+    export function fdatasyncSync(fd: number): void;
+    /**
+     * Asynchronously copies `src` to `dest`. By default, `dest` is overwritten if it
+     * already exists. No arguments other than a possible exception are given to the
+     * callback function. Node.js makes no guarantees about the atomicity of the copy
+     * operation. If an error occurs after the destination file has been opened for
+     * writing, Node.js will attempt to remove the destination.
+     *
+     * `mode` is an optional integer that specifies the behavior
+     * of the copy operation. It is possible to create a mask consisting of the bitwise
+     * OR of two or more values (e.g.`fs.constants.COPYFILE_EXCL | fs.constants.COPYFILE_FICLONE`).
+     *
+     * * `fs.constants.COPYFILE_EXCL`: The copy operation will fail if `dest` already
+     * exists.
+     * * `fs.constants.COPYFILE_FICLONE`: The copy operation will attempt to create a
+     * copy-on-write reflink. If the platform does not support copy-on-write, then a
+     * fallback copy mechanism is used.
+     * * `fs.constants.COPYFILE_FICLONE_FORCE`: The copy operation will attempt to
+     * create a copy-on-write reflink. If the platform does not support
+     * copy-on-write, then the operation will fail.
+     *
+     * ```js
+     * import { copyFile, constants } from 'fs';
+     *
+     * function callback(err) {
+     *   if (err) throw err;
+     *   console.log('source.txt was copied to destination.txt');
+     * }
+     *
+     * // destination.txt will be created or overwritten by default.
+     * copyFile('source.txt', 'destination.txt', callback);
+     *
+     * // By using COPYFILE_EXCL, the operation will fail if destination.txt exists.
+     * copyFile('source.txt', 'destination.txt', constants.COPYFILE_EXCL, callback);
+     * ```
+     * @since v8.5.0
+     * @param src source filename to copy
+     * @param dest destination filename of the copy operation
+     * @param [mode=0] modifiers for copy operation.
+     */
+    export function copyFile(src: PathLike, dest: PathLike, callback: NoParamCallback): void;
+    export function copyFile(src: PathLike, dest: PathLike, mode: number, callback: NoParamCallback): void;
+    export namespace copyFile {
+        function __promisify__(src: PathLike, dst: PathLike, mode?: number): Promise<void>;
+    }
+    /**
+     * Synchronously copies `src` to `dest`. By default, `dest` is overwritten if it
+     * already exists. Returns `undefined`. Node.js makes no guarantees about the
+     * atomicity of the copy operation. If an error occurs after the destination file
+     * has been opened for writing, Node.js will attempt to remove the destination.
+     *
+     * `mode` is an optional integer that specifies the behavior
+     * of the copy operation. It is possible to create a mask consisting of the bitwise
+     * OR of two or more values (e.g.`fs.constants.COPYFILE_EXCL | fs.constants.COPYFILE_FICLONE`).
+     *
+     * * `fs.constants.COPYFILE_EXCL`: The copy operation will fail if `dest` already
+     * exists.
+     * * `fs.constants.COPYFILE_FICLONE`: The copy operation will attempt to create a
+     * copy-on-write reflink. If the platform does not support copy-on-write, then a
+     * fallback copy mechanism is used.
+     * * `fs.constants.COPYFILE_FICLONE_FORCE`: The copy operation will attempt to
+     * create a copy-on-write reflink. If the platform does not support
+     * copy-on-write, then the operation will fail.
+     *
+     * ```js
+     * import { copyFileSync, constants } from 'fs';
+     *
+     * // destination.txt will be created or overwritten by default.
+     * copyFileSync('source.txt', 'destination.txt');
+     * console.log('source.txt was copied to destination.txt');
+     *
+     * // By using COPYFILE_EXCL, the operation will fail if destination.txt exists.
+     * copyFileSync('source.txt', 'destination.txt', constants.COPYFILE_EXCL);
+     * ```
+     * @since v8.5.0
+     * @param src source filename to copy
+     * @param dest destination filename of the copy operation
+     * @param [mode=0] modifiers for copy operation.
+     */
+    export function copyFileSync(src: PathLike, dest: PathLike, mode?: number): void;
+    /**
+     * Write an array of `ArrayBufferView`s to the file specified by `fd` using`writev()`.
+     *
+     * `position` is the offset from the beginning of the file where this data
+     * should be written. If `typeof position !== 'number'`, the data will be written
+     * at the current position.
+     *
+     * The callback will be given three arguments: `err`, `bytesWritten`, and`buffers`. `bytesWritten` is how many bytes were written from `buffers`.
+     *
+     * If this method is `util.promisify()` ed, it returns a promise for an`Object` with `bytesWritten` and `buffers` properties.
+     *
+     * It is unsafe to use `fs.writev()` multiple times on the same file without
+     * waiting for the callback. For this scenario, use {@link createWriteStream}.
+     *
+     * On Linux, positional writes don't work when the file is opened in append mode.
+     * The kernel ignores the position argument and always appends the data to
+     * the end of the file.
+     * @since v12.9.0
+     */
+    export function writev(fd: number, buffers: ReadonlyArray<NodeJS.ArrayBufferView>, cb: (err: NodeJS.ErrnoException | null, bytesWritten: number, buffers: NodeJS.ArrayBufferView[]) => void): void;
+    export function writev(
+        fd: number,
+        buffers: ReadonlyArray<NodeJS.ArrayBufferView>,
+        position: number,
+        cb: (err: NodeJS.ErrnoException | null, bytesWritten: number, buffers: NodeJS.ArrayBufferView[]) => void
+    ): void;
+    export interface WriteVResult {
+        bytesWritten: number;
+        buffers: NodeJS.ArrayBufferView[];
+    }
+    export namespace writev {
+        function __promisify__(fd: number, buffers: ReadonlyArray<NodeJS.ArrayBufferView>, position?: number): Promise<WriteVResult>;
+    }
+    /**
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link writev}.
+     * @since v12.9.0
+     * @return The number of bytes written.
+     */
+    export function writevSync(fd: number, buffers: ReadonlyArray<NodeJS.ArrayBufferView>, position?: number): number;
+    /**
+     * Read from a file specified by `fd` and write to an array of `ArrayBufferView`s
+     * using `readv()`.
+     *
+     * `position` is the offset from the beginning of the file from where data
+     * should be read. If `typeof position !== 'number'`, the data will be read
+     * from the current position.
+     *
+     * The callback will be given three arguments: `err`, `bytesRead`, and`buffers`. `bytesRead` is how many bytes were read from the file.
+     *
+     * If this method is invoked as its `util.promisify()` ed version, it returns
+     * a promise for an `Object` with `bytesRead` and `buffers` properties.
+     * @since v13.13.0, v12.17.0
+     */
+    export function readv(fd: number, buffers: ReadonlyArray<NodeJS.ArrayBufferView>, cb: (err: NodeJS.ErrnoException | null, bytesRead: number, buffers: NodeJS.ArrayBufferView[]) => void): void;
+    export function readv(
+        fd: number,
+        buffers: ReadonlyArray<NodeJS.ArrayBufferView>,
+        position: number,
+        cb: (err: NodeJS.ErrnoException | null, bytesRead: number, buffers: NodeJS.ArrayBufferView[]) => void
+    ): void;
+    export interface ReadVResult {
+        bytesRead: number;
+        buffers: NodeJS.ArrayBufferView[];
+    }
+    export namespace readv {
+        function __promisify__(fd: number, buffers: ReadonlyArray<NodeJS.ArrayBufferView>, position?: number): Promise<ReadVResult>;
+    }
+    /**
+     * For detailed information, see the documentation of the asynchronous version of
+     * this API: {@link readv}.
+     * @since v13.13.0, v12.17.0
+     * @return The number of bytes read.
+     */
+    export function readvSync(fd: number, buffers: ReadonlyArray<NodeJS.ArrayBufferView>, position?: number): number;
+    export interface OpenDirOptions {
+        encoding?: BufferEncoding | undefined;
+        /**
+         * Number of directory entries that are buffered
+         * internally when reading from the directory. Higher values lead to better
+         * performance but higher memory usage.
+         * @default 32
+         */
+        bufferSize?: number | undefined;
+    }
+    /**
+     * Synchronously open a directory. See [`opendir(3)`](http://man7.org/linux/man-pages/man3/opendir.3.html).
+     *
+     * Creates an `fs.Dir`, which contains all further functions for reading from
+     * and cleaning up the directory.
+     *
+     * The `encoding` option sets the encoding for the `path` while opening the
+     * directory and subsequent read operations.
+     * @since v12.12.0
+     */
+    export function opendirSync(path: PathLike, options?: OpenDirOptions): Dir;
+    /**
+     * Asynchronously open a directory. See the POSIX [`opendir(3)`](http://man7.org/linux/man-pages/man3/opendir.3.html) documentation for
+     * more details.
+     *
+     * Creates an `fs.Dir`, which contains all further functions for reading from
+     * and cleaning up the directory.
+     *
+     * The `encoding` option sets the encoding for the `path` while opening the
+     * directory and subsequent read operations.
+     * @since v12.12.0
+     */
+    export function opendir(path: PathLike, cb: (err: NodeJS.ErrnoException | null, dir: Dir) => void): void;
+    export function opendir(path: PathLike, options: OpenDirOptions, cb: (err: NodeJS.ErrnoException | null, dir: Dir) => void): void;
+    export namespace opendir {
+        function __promisify__(path: PathLike, options?: OpenDirOptions): Promise<Dir>;
+    }
+    export interface BigIntStats extends StatsBase<bigint> {
+        atimeNs: bigint;
+        mtimeNs: bigint;
+        ctimeNs: bigint;
+        birthtimeNs: bigint;
+    }
+    export interface BigIntOptions {
+        bigint: true;
+    }
+    export interface StatOptions {
+        bigint?: boolean | undefined;
+    }
+    export interface StatSyncOptions extends StatOptions {
+        throwIfNoEntry?: boolean | undefined;
+    }
+    interface CopyOptionsBase {
+        /**
+         * Dereference symlinks
+         * @default false
+         */
+        dereference?: boolean;
+        /**
+         * When `force` is `false`, and the destination
+         * exists, throw an error.
+         * @default false
+         */
+        errorOnExist?: boolean;
+        /**
+         * Overwrite existing file or directory. _The copy
+         * operation will ignore errors if you set this to false and the destination
+         * exists. Use the `errorOnExist` option to change this behavior.
+         * @default true
+         */
+        force?: boolean;
+        /**
+         * When `true` timestamps from `src` will
+         * be preserved.
+         * @default false
+         */
+        preserveTimestamps?: boolean;
+        /**
+         * Copy directories recursively.
+         * @default false
+         */
+        recursive?: boolean;
+        /**
+         * When true, path resolution for symlinks will be skipped
+         * @default false
+         */
+        verbatimSymlinks?: boolean;
+    }
+    export interface CopyOptions extends CopyOptionsBase {
+        /**
+         * Function to filter copied files/directories. Return
+         * `true` to copy the item, `false` to ignore it.
+         */
+        filter?(source: string, destination: string): boolean | Promise<boolean>;
+    }
+    export interface CopySyncOptions extends CopyOptionsBase {
+        /**
+         * Function to filter copied files/directories. Return
+         * `true` to copy the item, `false` to ignore it.
+         */
+        filter?(source: string, destination: string): boolean;
+    }
+    /**
+     * Asynchronously copies the entire directory structure from `src` to `dest`,
+     * including subdirectories and files.
+     *
+     * When copying a directory to another directory, globs are not supported and
+     * behavior is similar to `cp dir1/ dir2/`.
+     * @since v16.7.0
+     * @experimental
+     * @param src source path to copy.
+     * @param dest destination path to copy to.
+     */
+    export function cp(source: string | URL, destination: string | URL, callback: (err: NodeJS.ErrnoException | null) => void): void;
+    export function cp(source: string | URL, destination: string | URL, opts: CopyOptions, callback: (err: NodeJS.ErrnoException | null) => void): void;
+    /**
+     * Synchronously copies the entire directory structure from `src` to `dest`,
+     * including subdirectories and files.
+     *
+     * When copying a directory to another directory, globs are not supported and
+     * behavior is similar to `cp dir1/ dir2/`.
+     * @since v16.7.0
+     * @experimental
+     * @param src source path to copy.
+     * @param dest destination path to copy to.
+     */
+    export function cpSync(source: string | URL, destination: string | URL, opts?: CopySyncOptions): void;
+}
+declare module 'node:fs' {
+    export * from 'fs';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/fs/promises.d.ts b/igv_component/node_modules/@types/node/ts4.8/fs/promises.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..9d0b5f1090c0a5b225f099214b9251b1e61a942a
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/fs/promises.d.ts
@@ -0,0 +1,1120 @@
+/**
+ * The `fs/promises` API provides asynchronous file system methods that return
+ * promises.
+ *
+ * The promise APIs use the underlying Node.js threadpool to perform file
+ * system operations off the event loop thread. These operations are not
+ * synchronized or threadsafe. Care must be taken when performing multiple
+ * concurrent modifications on the same file or data corruption may occur.
+ * @since v10.0.0
+ */
+declare module 'fs/promises' {
+    import { Abortable } from 'node:events';
+    import { Stream } from 'node:stream';
+    import { ReadableStream } from 'node:stream/web';
+    import {
+        BigIntStats,
+        BufferEncodingOption,
+        constants as fsConstants,
+        CopyOptions,
+        Dir,
+        Dirent,
+        MakeDirectoryOptions,
+        Mode,
+        ObjectEncodingOptions,
+        OpenDirOptions,
+        OpenMode,
+        PathLike,
+        ReadStream,
+        ReadVResult,
+        RmDirOptions,
+        RmOptions,
+        StatOptions,
+        Stats,
+        TimeLike,
+        WatchEventType,
+        WatchOptions,
+        WriteStream,
+        WriteVResult,
+    } from 'node:fs';
+
+    interface FileChangeInfo<T extends string | Buffer> {
+        eventType: WatchEventType;
+        filename: T;
+    }
+    interface FlagAndOpenMode {
+        mode?: Mode | undefined;
+        flag?: OpenMode | undefined;
+    }
+    interface FileReadResult<T extends NodeJS.ArrayBufferView> {
+        bytesRead: number;
+        buffer: T;
+    }
+    interface FileReadOptions<T extends NodeJS.ArrayBufferView = Buffer> {
+        /**
+         * @default `Buffer.alloc(0xffff)`
+         */
+        buffer?: T;
+        /**
+         * @default 0
+         */
+        offset?: number | null;
+        /**
+         * @default `buffer.byteLength`
+         */
+        length?: number | null;
+        position?: number | null;
+    }
+    interface CreateReadStreamOptions {
+        encoding?: BufferEncoding | null | undefined;
+        autoClose?: boolean | undefined;
+        emitClose?: boolean | undefined;
+        start?: number | undefined;
+        end?: number | undefined;
+        highWaterMark?: number | undefined;
+    }
+    interface CreateWriteStreamOptions {
+        encoding?: BufferEncoding | null | undefined;
+        autoClose?: boolean | undefined;
+        emitClose?: boolean | undefined;
+        start?: number | undefined;
+    }
+    // TODO: Add `EventEmitter` close
+    interface FileHandle {
+        /**
+         * The numeric file descriptor managed by the {FileHandle} object.
+         * @since v10.0.0
+         */
+        readonly fd: number;
+        /**
+         * Alias of `filehandle.writeFile()`.
+         *
+         * When operating on file handles, the mode cannot be changed from what it was set
+         * to with `fsPromises.open()`. Therefore, this is equivalent to `filehandle.writeFile()`.
+         * @since v10.0.0
+         * @return Fulfills with `undefined` upon success.
+         */
+        appendFile(data: string | Uint8Array, options?: (ObjectEncodingOptions & FlagAndOpenMode) | BufferEncoding | null): Promise<void>;
+        /**
+         * Changes the ownership of the file. A wrapper for [`chown(2)`](http://man7.org/linux/man-pages/man2/chown.2.html).
+         * @since v10.0.0
+         * @param uid The file's new owner's user id.
+         * @param gid The file's new group's group id.
+         * @return Fulfills with `undefined` upon success.
+         */
+        chown(uid: number, gid: number): Promise<void>;
+        /**
+         * Modifies the permissions on the file. See [`chmod(2)`](http://man7.org/linux/man-pages/man2/chmod.2.html).
+         * @since v10.0.0
+         * @param mode the file mode bit mask.
+         * @return Fulfills with `undefined` upon success.
+         */
+        chmod(mode: Mode): Promise<void>;
+        /**
+         * Unlike the 16 kb default `highWaterMark` for a `stream.Readable`, the stream
+         * returned by this method has a default `highWaterMark` of 64 kb.
+         *
+         * `options` can include `start` and `end` values to read a range of bytes from
+         * the file instead of the entire file. Both `start` and `end` are inclusive and
+         * start counting at 0, allowed values are in the
+         * \[0, [`Number.MAX_SAFE_INTEGER`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER)\] range. If `start` is
+         * omitted or `undefined`, `filehandle.createReadStream()` reads sequentially from
+         * the current file position. The `encoding` can be any one of those accepted by `Buffer`.
+         *
+         * If the `FileHandle` points to a character device that only supports blocking
+         * reads (such as keyboard or sound card), read operations do not finish until data
+         * is available. This can prevent the process from exiting and the stream from
+         * closing naturally.
+         *
+         * By default, the stream will emit a `'close'` event after it has been
+         * destroyed.  Set the `emitClose` option to `false` to change this behavior.
+         *
+         * ```js
+         * import { open } from 'fs/promises';
+         *
+         * const fd = await open('/dev/input/event0');
+         * // Create a stream from some character device.
+         * const stream = fd.createReadStream();
+         * setTimeout(() => {
+         *   stream.close(); // This may not close the stream.
+         *   // Artificially marking end-of-stream, as if the underlying resource had
+         *   // indicated end-of-file by itself, allows the stream to close.
+         *   // This does not cancel pending read operations, and if there is such an
+         *   // operation, the process may still not be able to exit successfully
+         *   // until it finishes.
+         *   stream.push(null);
+         *   stream.read(0);
+         * }, 100);
+         * ```
+         *
+         * If `autoClose` is false, then the file descriptor won't be closed, even if
+         * there's an error. It is the application's responsibility to close it and make
+         * sure there's no file descriptor leak. If `autoClose` is set to true (default
+         * behavior), on `'error'` or `'end'` the file descriptor will be closed
+         * automatically.
+         *
+         * An example to read the last 10 bytes of a file which is 100 bytes long:
+         *
+         * ```js
+         * import { open } from 'fs/promises';
+         *
+         * const fd = await open('sample.txt');
+         * fd.createReadStream({ start: 90, end: 99 });
+         * ```
+         * @since v16.11.0
+         */
+        createReadStream(options?: CreateReadStreamOptions): ReadStream;
+        /**
+         * `options` may also include a `start` option to allow writing data at some
+         * position past the beginning of the file, allowed values are in the
+         * \[0, [`Number.MAX_SAFE_INTEGER`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Number/MAX_SAFE_INTEGER)\] range. Modifying a file rather than
+         * replacing it may require the `flags` `open` option to be set to `r+` rather than
+         * the default `r`. The `encoding` can be any one of those accepted by `Buffer`.
+         *
+         * If `autoClose` is set to true (default behavior) on `'error'` or `'finish'`the file descriptor will be closed automatically. If `autoClose` is false,
+         * then the file descriptor won't be closed, even if there's an error.
+         * It is the application's responsibility to close it and make sure there's no
+         * file descriptor leak.
+         *
+         * By default, the stream will emit a `'close'` event after it has been
+         * destroyed.  Set the `emitClose` option to `false` to change this behavior.
+         * @since v16.11.0
+         */
+        createWriteStream(options?: CreateWriteStreamOptions): WriteStream;
+        /**
+         * Forces all currently queued I/O operations associated with the file to the
+         * operating system's synchronized I/O completion state. Refer to the POSIX [`fdatasync(2)`](http://man7.org/linux/man-pages/man2/fdatasync.2.html) documentation for details.
+         *
+         * Unlike `filehandle.sync` this method does not flush modified metadata.
+         * @since v10.0.0
+         * @return Fulfills with `undefined` upon success.
+         */
+        datasync(): Promise<void>;
+        /**
+         * Request that all data for the open file descriptor is flushed to the storage
+         * device. The specific implementation is operating system and device specific.
+         * Refer to the POSIX [`fsync(2)`](http://man7.org/linux/man-pages/man2/fsync.2.html) documentation for more detail.
+         * @since v10.0.0
+         * @return Fufills with `undefined` upon success.
+         */
+        sync(): Promise<void>;
+        /**
+         * Reads data from the file and stores that in the given buffer.
+         *
+         * If the file is not modified concurrently, the end-of-file is reached when the
+         * number of bytes read is zero.
+         * @since v10.0.0
+         * @param buffer A buffer that will be filled with the file data read.
+         * @param offset The location in the buffer at which to start filling.
+         * @param length The number of bytes to read.
+         * @param position The location where to begin reading data from the file. If `null`, data will be read from the current file position, and the position will be updated. If `position` is an
+         * integer, the current file position will remain unchanged.
+         * @return Fulfills upon success with an object with two properties:
+         */
+        read<T extends NodeJS.ArrayBufferView>(buffer: T, offset?: number | null, length?: number | null, position?: number | null): Promise<FileReadResult<T>>;
+        read<T extends NodeJS.ArrayBufferView = Buffer>(options?: FileReadOptions<T>): Promise<FileReadResult<T>>;
+        /**
+         * Returns a `ReadableStream` that may be used to read the files data.
+         *
+         * An error will be thrown if this method is called more than once or is called after the `FileHandle` is closed
+         * or closing.
+         *
+         * ```js
+         * import { open } from 'node:fs/promises';
+         *
+         * const file = await open('./some/file/to/read');
+         *
+         * for await (const chunk of file.readableWebStream())
+         *   console.log(chunk);
+         *
+         * await file.close();
+         * ```
+         *
+         * While the `ReadableStream` will read the file to completion, it will not close the `FileHandle` automatically. User code must still call the `fileHandle.close()` method.
+         *
+         * @since v17.0.0
+         * @experimental
+         */
+        readableWebStream(): ReadableStream;
+        /**
+         * Asynchronously reads the entire contents of a file.
+         *
+         * If `options` is a string, then it specifies the `encoding`.
+         *
+         * The `FileHandle` has to support reading.
+         *
+         * If one or more `filehandle.read()` calls are made on a file handle and then a`filehandle.readFile()` call is made, the data will be read from the current
+         * position till the end of the file. It doesn't always read from the beginning
+         * of the file.
+         * @since v10.0.0
+         * @return Fulfills upon a successful read with the contents of the file. If no encoding is specified (using `options.encoding`), the data is returned as a {Buffer} object. Otherwise, the
+         * data will be a string.
+         */
+        readFile(
+            options?: {
+                encoding?: null | undefined;
+                flag?: OpenMode | undefined;
+            } | null
+        ): Promise<Buffer>;
+        /**
+         * Asynchronously reads the entire contents of a file. The underlying file will _not_ be closed automatically.
+         * The `FileHandle` must have been opened for reading.
+         * @param options An object that may contain an optional flag.
+         * If a flag is not provided, it defaults to `'r'`.
+         */
+        readFile(
+            options:
+                | {
+                      encoding: BufferEncoding;
+                      flag?: OpenMode | undefined;
+                  }
+                | BufferEncoding
+        ): Promise<string>;
+        /**
+         * Asynchronously reads the entire contents of a file. The underlying file will _not_ be closed automatically.
+         * The `FileHandle` must have been opened for reading.
+         * @param options An object that may contain an optional flag.
+         * If a flag is not provided, it defaults to `'r'`.
+         */
+        readFile(
+            options?:
+                | (ObjectEncodingOptions & {
+                      flag?: OpenMode | undefined;
+                  })
+                | BufferEncoding
+                | null
+        ): Promise<string | Buffer>;
+        /**
+         * @since v10.0.0
+         * @return Fulfills with an {fs.Stats} for the file.
+         */
+        stat(
+            opts?: StatOptions & {
+                bigint?: false | undefined;
+            }
+        ): Promise<Stats>;
+        stat(
+            opts: StatOptions & {
+                bigint: true;
+            }
+        ): Promise<BigIntStats>;
+        stat(opts?: StatOptions): Promise<Stats | BigIntStats>;
+        /**
+         * Truncates the file.
+         *
+         * If the file was larger than `len` bytes, only the first `len` bytes will be
+         * retained in the file.
+         *
+         * The following example retains only the first four bytes of the file:
+         *
+         * ```js
+         * import { open } from 'fs/promises';
+         *
+         * let filehandle = null;
+         * try {
+         *   filehandle = await open('temp.txt', 'r+');
+         *   await filehandle.truncate(4);
+         * } finally {
+         *   await filehandle?.close();
+         * }
+         * ```
+         *
+         * If the file previously was shorter than `len` bytes, it is extended, and the
+         * extended part is filled with null bytes (`'\0'`):
+         *
+         * If `len` is negative then `0` will be used.
+         * @since v10.0.0
+         * @param [len=0]
+         * @return Fulfills with `undefined` upon success.
+         */
+        truncate(len?: number): Promise<void>;
+        /**
+         * Change the file system timestamps of the object referenced by the `FileHandle` then resolves the promise with no arguments upon success.
+         * @since v10.0.0
+         */
+        utimes(atime: TimeLike, mtime: TimeLike): Promise<void>;
+        /**
+         * Asynchronously writes data to a file, replacing the file if it already exists.`data` can be a string, a buffer, an
+         * [AsyncIterable](https://tc39.github.io/ecma262/#sec-asynciterable-interface) or
+         * [Iterable](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#The_iterable_protocol) object.
+         * The promise is resolved with no arguments upon success.
+         *
+         * If `options` is a string, then it specifies the `encoding`.
+         *
+         * The `FileHandle` has to support writing.
+         *
+         * It is unsafe to use `filehandle.writeFile()` multiple times on the same file
+         * without waiting for the promise to be resolved (or rejected).
+         *
+         * If one or more `filehandle.write()` calls are made on a file handle and then a`filehandle.writeFile()` call is made, the data will be written from the
+         * current position till the end of the file. It doesn't always write from the
+         * beginning of the file.
+         * @since v10.0.0
+         */
+        writeFile(data: string | Uint8Array, options?: (ObjectEncodingOptions & FlagAndOpenMode & Abortable) | BufferEncoding | null): Promise<void>;
+        /**
+         * Write `buffer` to the file.
+         *
+         * The promise is resolved with an object containing two properties:
+         *
+         * It is unsafe to use `filehandle.write()` multiple times on the same file
+         * without waiting for the promise to be resolved (or rejected). For this
+         * scenario, use `filehandle.createWriteStream()`.
+         *
+         * On Linux, positional writes do not work when the file is opened in append mode.
+         * The kernel ignores the position argument and always appends the data to
+         * the end of the file.
+         * @since v10.0.0
+         * @param [offset=0] The start position from within `buffer` where the data to write begins.
+         * @param [length=buffer.byteLength - offset] The number of bytes from `buffer` to write.
+         * @param position The offset from the beginning of the file where the data from `buffer` should be written. If `position` is not a `number`, the data will be written at the current position.
+         * See the POSIX pwrite(2) documentation for more detail.
+         */
+        write<TBuffer extends Uint8Array>(
+            buffer: TBuffer,
+            offset?: number | null,
+            length?: number | null,
+            position?: number | null
+        ): Promise<{
+            bytesWritten: number;
+            buffer: TBuffer;
+        }>;
+        write(
+            data: string,
+            position?: number | null,
+            encoding?: BufferEncoding | null
+        ): Promise<{
+            bytesWritten: number;
+            buffer: string;
+        }>;
+        /**
+         * Write an array of [ArrayBufferView](https://developer.mozilla.org/en-US/docs/Web/API/ArrayBufferView) s to the file.
+         *
+         * The promise is resolved with an object containing a two properties:
+         *
+         * It is unsafe to call `writev()` multiple times on the same file without waiting
+         * for the promise to be resolved (or rejected).
+         *
+         * On Linux, positional writes don't work when the file is opened in append mode.
+         * The kernel ignores the position argument and always appends the data to
+         * the end of the file.
+         * @since v12.9.0
+         * @param position The offset from the beginning of the file where the data from `buffers` should be written. If `position` is not a `number`, the data will be written at the current
+         * position.
+         */
+        writev(buffers: ReadonlyArray<NodeJS.ArrayBufferView>, position?: number): Promise<WriteVResult>;
+        /**
+         * Read from a file and write to an array of [ArrayBufferView](https://developer.mozilla.org/en-US/docs/Web/API/ArrayBufferView) s
+         * @since v13.13.0, v12.17.0
+         * @param position The offset from the beginning of the file where the data should be read from. If `position` is not a `number`, the data will be read from the current position.
+         * @return Fulfills upon success an object containing two properties:
+         */
+        readv(buffers: ReadonlyArray<NodeJS.ArrayBufferView>, position?: number): Promise<ReadVResult>;
+        /**
+         * Closes the file handle after waiting for any pending operation on the handle to
+         * complete.
+         *
+         * ```js
+         * import { open } from 'fs/promises';
+         *
+         * let filehandle;
+         * try {
+         *   filehandle = await open('thefile.txt', 'r');
+         * } finally {
+         *   await filehandle?.close();
+         * }
+         * ```
+         * @since v10.0.0
+         * @return Fulfills with `undefined` upon success.
+         */
+        close(): Promise<void>;
+    }
+
+    const constants: typeof fsConstants;
+
+    /**
+     * Tests a user's permissions for the file or directory specified by `path`.
+     * The `mode` argument is an optional integer that specifies the accessibility
+     * checks to be performed. `mode` should be either the value `fs.constants.F_OK`or a mask consisting of the bitwise OR of any of `fs.constants.R_OK`,`fs.constants.W_OK`, and `fs.constants.X_OK`
+     * (e.g.`fs.constants.W_OK | fs.constants.R_OK`). Check `File access constants` for
+     * possible values of `mode`.
+     *
+     * If the accessibility check is successful, the promise is resolved with no
+     * value. If any of the accessibility checks fail, the promise is rejected
+     * with an [Error](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error) object. The following example checks if the file`/etc/passwd` can be read and
+     * written by the current process.
+     *
+     * ```js
+     * import { access } from 'fs/promises';
+     * import { constants } from 'fs';
+     *
+     * try {
+     *   await access('/etc/passwd', constants.R_OK | constants.W_OK);
+     *   console.log('can access');
+     * } catch {
+     *   console.error('cannot access');
+     * }
+     * ```
+     *
+     * Using `fsPromises.access()` to check for the accessibility of a file before
+     * calling `fsPromises.open()` is not recommended. Doing so introduces a race
+     * condition, since other processes may change the file's state between the two
+     * calls. Instead, user code should open/read/write the file directly and handle
+     * the error raised if the file is not accessible.
+     * @since v10.0.0
+     * @param [mode=fs.constants.F_OK]
+     * @return Fulfills with `undefined` upon success.
+     */
+    function access(path: PathLike, mode?: number): Promise<void>;
+    /**
+     * Asynchronously copies `src` to `dest`. By default, `dest` is overwritten if it
+     * already exists.
+     *
+     * No guarantees are made about the atomicity of the copy operation. If an
+     * error occurs after the destination file has been opened for writing, an attempt
+     * will be made to remove the destination.
+     *
+     * ```js
+     * import { constants } from 'fs';
+     * import { copyFile } from 'fs/promises';
+     *
+     * try {
+     *   await copyFile('source.txt', 'destination.txt');
+     *   console.log('source.txt was copied to destination.txt');
+     * } catch {
+     *   console.log('The file could not be copied');
+     * }
+     *
+     * // By using COPYFILE_EXCL, the operation will fail if destination.txt exists.
+     * try {
+     *   await copyFile('source.txt', 'destination.txt', constants.COPYFILE_EXCL);
+     *   console.log('source.txt was copied to destination.txt');
+     * } catch {
+     *   console.log('The file could not be copied');
+     * }
+     * ```
+     * @since v10.0.0
+     * @param src source filename to copy
+     * @param dest destination filename of the copy operation
+     * @param [mode=0] Optional modifiers that specify the behavior of the copy operation. It is possible to create a mask consisting of the bitwise OR of two or more values (e.g.
+     * `fs.constants.COPYFILE_EXCL | fs.constants.COPYFILE_FICLONE`)
+     * @return Fulfills with `undefined` upon success.
+     */
+    function copyFile(src: PathLike, dest: PathLike, mode?: number): Promise<void>;
+    /**
+     * Opens a `FileHandle`.
+     *
+     * Refer to the POSIX [`open(2)`](http://man7.org/linux/man-pages/man2/open.2.html) documentation for more detail.
+     *
+     * Some characters (`< > : " / \ | ? *`) are reserved under Windows as documented
+     * by [Naming Files, Paths, and Namespaces](https://docs.microsoft.com/en-us/windows/desktop/FileIO/naming-a-file). Under NTFS, if the filename contains
+     * a colon, Node.js will open a file system stream, as described by [this MSDN page](https://docs.microsoft.com/en-us/windows/desktop/FileIO/using-streams).
+     * @since v10.0.0
+     * @param [flags='r'] See `support of file system `flags``.
+     * @param [mode=0o666] Sets the file mode (permission and sticky bits) if the file is created.
+     * @return Fulfills with a {FileHandle} object.
+     */
+    function open(path: PathLike, flags?: string | number, mode?: Mode): Promise<FileHandle>;
+    /**
+     * Renames `oldPath` to `newPath`.
+     * @since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function rename(oldPath: PathLike, newPath: PathLike): Promise<void>;
+    /**
+     * Truncates (shortens or extends the length) of the content at `path` to `len`bytes.
+     * @since v10.0.0
+     * @param [len=0]
+     * @return Fulfills with `undefined` upon success.
+     */
+    function truncate(path: PathLike, len?: number): Promise<void>;
+    /**
+     * Removes the directory identified by `path`.
+     *
+     * Using `fsPromises.rmdir()` on a file (not a directory) results in the
+     * promise being rejected with an `ENOENT` error on Windows and an `ENOTDIR`error on POSIX.
+     *
+     * To get a behavior similar to the `rm -rf` Unix command, use `fsPromises.rm()` with options `{ recursive: true, force: true }`.
+     * @since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function rmdir(path: PathLike, options?: RmDirOptions): Promise<void>;
+    /**
+     * Removes files and directories (modeled on the standard POSIX `rm` utility).
+     * @since v14.14.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function rm(path: PathLike, options?: RmOptions): Promise<void>;
+    /**
+     * Asynchronously creates a directory.
+     *
+     * The optional `options` argument can be an integer specifying `mode` (permission
+     * and sticky bits), or an object with a `mode` property and a `recursive`property indicating whether parent directories should be created. Calling`fsPromises.mkdir()` when `path` is a directory
+     * that exists results in a
+     * rejection only when `recursive` is false.
+     * @since v10.0.0
+     * @return Upon success, fulfills with `undefined` if `recursive` is `false`, or the first directory path created if `recursive` is `true`.
+     */
+    function mkdir(
+        path: PathLike,
+        options: MakeDirectoryOptions & {
+            recursive: true;
+        }
+    ): Promise<string | undefined>;
+    /**
+     * Asynchronous mkdir(2) - create a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+     * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+     */
+    function mkdir(
+        path: PathLike,
+        options?:
+            | Mode
+            | (MakeDirectoryOptions & {
+                  recursive?: false | undefined;
+              })
+            | null
+    ): Promise<void>;
+    /**
+     * Asynchronous mkdir(2) - create a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the file mode, or an object optionally specifying the file mode and whether parent folders
+     * should be created. If a string is passed, it is parsed as an octal integer. If not specified, defaults to `0o777`.
+     */
+    function mkdir(path: PathLike, options?: Mode | MakeDirectoryOptions | null): Promise<string | undefined>;
+    /**
+     * Reads the contents of a directory.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use for
+     * the filenames. If the `encoding` is set to `'buffer'`, the filenames returned
+     * will be passed as `Buffer` objects.
+     *
+     * If `options.withFileTypes` is set to `true`, the resolved array will contain `fs.Dirent` objects.
+     *
+     * ```js
+     * import { readdir } from 'fs/promises';
+     *
+     * try {
+     *   const files = await readdir(path);
+     *   for (const file of files)
+     *     console.log(file);
+     * } catch (err) {
+     *   console.error(err);
+     * }
+     * ```
+     * @since v10.0.0
+     * @return Fulfills with an array of the names of the files in the directory excluding `'.'` and `'..'`.
+     */
+    function readdir(
+        path: PathLike,
+        options?:
+            | (ObjectEncodingOptions & {
+                  withFileTypes?: false | undefined;
+              })
+            | BufferEncoding
+            | null
+    ): Promise<string[]>;
+    /**
+     * Asynchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    function readdir(
+        path: PathLike,
+        options:
+            | {
+                  encoding: 'buffer';
+                  withFileTypes?: false | undefined;
+              }
+            | 'buffer'
+    ): Promise<Buffer[]>;
+    /**
+     * Asynchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    function readdir(
+        path: PathLike,
+        options?:
+            | (ObjectEncodingOptions & {
+                  withFileTypes?: false | undefined;
+              })
+            | BufferEncoding
+            | null
+    ): Promise<string[] | Buffer[]>;
+    /**
+     * Asynchronous readdir(3) - read a directory.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options If called with `withFileTypes: true` the result data will be an array of Dirent.
+     */
+    function readdir(
+        path: PathLike,
+        options: ObjectEncodingOptions & {
+            withFileTypes: true;
+        }
+    ): Promise<Dirent[]>;
+    /**
+     * Reads the contents of the symbolic link referred to by `path`. See the POSIX [`readlink(2)`](http://man7.org/linux/man-pages/man2/readlink.2.html) documentation for more detail. The promise is
+     * resolved with the`linkString` upon success.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use for
+     * the link path returned. If the `encoding` is set to `'buffer'`, the link path
+     * returned will be passed as a `Buffer` object.
+     * @since v10.0.0
+     * @return Fulfills with the `linkString` upon success.
+     */
+    function readlink(path: PathLike, options?: ObjectEncodingOptions | BufferEncoding | null): Promise<string>;
+    /**
+     * Asynchronous readlink(2) - read value of a symbolic link.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    function readlink(path: PathLike, options: BufferEncodingOption): Promise<Buffer>;
+    /**
+     * Asynchronous readlink(2) - read value of a symbolic link.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    function readlink(path: PathLike, options?: ObjectEncodingOptions | string | null): Promise<string | Buffer>;
+    /**
+     * Creates a symbolic link.
+     *
+     * The `type` argument is only used on Windows platforms and can be one of `'dir'`,`'file'`, or `'junction'`. Windows junction points require the destination path
+     * to be absolute. When using `'junction'`, the `target` argument will
+     * automatically be normalized to absolute path.
+     * @since v10.0.0
+     * @param [type='file']
+     * @return Fulfills with `undefined` upon success.
+     */
+    function symlink(target: PathLike, path: PathLike, type?: string | null): Promise<void>;
+    /**
+     * Equivalent to `fsPromises.stat()` unless `path` refers to a symbolic link,
+     * in which case the link itself is stat-ed, not the file that it refers to.
+     * Refer to the POSIX [`lstat(2)`](http://man7.org/linux/man-pages/man2/lstat.2.html) document for more detail.
+     * @since v10.0.0
+     * @return Fulfills with the {fs.Stats} object for the given symbolic link `path`.
+     */
+    function lstat(
+        path: PathLike,
+        opts?: StatOptions & {
+            bigint?: false | undefined;
+        }
+    ): Promise<Stats>;
+    function lstat(
+        path: PathLike,
+        opts: StatOptions & {
+            bigint: true;
+        }
+    ): Promise<BigIntStats>;
+    function lstat(path: PathLike, opts?: StatOptions): Promise<Stats | BigIntStats>;
+    /**
+     * @since v10.0.0
+     * @return Fulfills with the {fs.Stats} object for the given `path`.
+     */
+    function stat(
+        path: PathLike,
+        opts?: StatOptions & {
+            bigint?: false | undefined;
+        }
+    ): Promise<Stats>;
+    function stat(
+        path: PathLike,
+        opts: StatOptions & {
+            bigint: true;
+        }
+    ): Promise<BigIntStats>;
+    function stat(path: PathLike, opts?: StatOptions): Promise<Stats | BigIntStats>;
+    /**
+     * Creates a new link from the `existingPath` to the `newPath`. See the POSIX [`link(2)`](http://man7.org/linux/man-pages/man2/link.2.html) documentation for more detail.
+     * @since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function link(existingPath: PathLike, newPath: PathLike): Promise<void>;
+    /**
+     * If `path` refers to a symbolic link, then the link is removed without affecting
+     * the file or directory to which that link refers. If the `path` refers to a file
+     * path that is not a symbolic link, the file is deleted. See the POSIX [`unlink(2)`](http://man7.org/linux/man-pages/man2/unlink.2.html) documentation for more detail.
+     * @since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function unlink(path: PathLike): Promise<void>;
+    /**
+     * Changes the permissions of a file.
+     * @since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function chmod(path: PathLike, mode: Mode): Promise<void>;
+    /**
+     * Changes the permissions on a symbolic link.
+     *
+     * This method is only implemented on macOS.
+     * @deprecated Since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function lchmod(path: PathLike, mode: Mode): Promise<void>;
+    /**
+     * Changes the ownership on a symbolic link.
+     * @since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function lchown(path: PathLike, uid: number, gid: number): Promise<void>;
+    /**
+     * Changes the access and modification times of a file in the same way as `fsPromises.utimes()`, with the difference that if the path refers to a
+     * symbolic link, then the link is not dereferenced: instead, the timestamps of
+     * the symbolic link itself are changed.
+     * @since v14.5.0, v12.19.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function lutimes(path: PathLike, atime: TimeLike, mtime: TimeLike): Promise<void>;
+    /**
+     * Changes the ownership of a file.
+     * @since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function chown(path: PathLike, uid: number, gid: number): Promise<void>;
+    /**
+     * Change the file system timestamps of the object referenced by `path`.
+     *
+     * The `atime` and `mtime` arguments follow these rules:
+     *
+     * * Values can be either numbers representing Unix epoch time, `Date`s, or a
+     * numeric string like `'123456789.0'`.
+     * * If the value can not be converted to a number, or is `NaN`, `Infinity` or`-Infinity`, an `Error` will be thrown.
+     * @since v10.0.0
+     * @return Fulfills with `undefined` upon success.
+     */
+    function utimes(path: PathLike, atime: TimeLike, mtime: TimeLike): Promise<void>;
+    /**
+     * Determines the actual location of `path` using the same semantics as the`fs.realpath.native()` function.
+     *
+     * Only paths that can be converted to UTF8 strings are supported.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use for
+     * the path. If the `encoding` is set to `'buffer'`, the path returned will be
+     * passed as a `Buffer` object.
+     *
+     * On Linux, when Node.js is linked against musl libc, the procfs file system must
+     * be mounted on `/proc` in order for this function to work. Glibc does not have
+     * this restriction.
+     * @since v10.0.0
+     * @return Fulfills with the resolved path upon success.
+     */
+    function realpath(path: PathLike, options?: ObjectEncodingOptions | BufferEncoding | null): Promise<string>;
+    /**
+     * Asynchronous realpath(3) - return the canonicalized absolute pathname.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    function realpath(path: PathLike, options: BufferEncodingOption): Promise<Buffer>;
+    /**
+     * Asynchronous realpath(3) - return the canonicalized absolute pathname.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    function realpath(path: PathLike, options?: ObjectEncodingOptions | BufferEncoding | null): Promise<string | Buffer>;
+    /**
+     * Creates a unique temporary directory. A unique directory name is generated by
+     * appending six random characters to the end of the provided `prefix`. Due to
+     * platform inconsistencies, avoid trailing `X` characters in `prefix`. Some
+     * platforms, notably the BSDs, can return more than six random characters, and
+     * replace trailing `X` characters in `prefix` with random characters.
+     *
+     * The optional `options` argument can be a string specifying an encoding, or an
+     * object with an `encoding` property specifying the character encoding to use.
+     *
+     * ```js
+     * import { mkdtemp } from 'fs/promises';
+     *
+     * try {
+     *   await mkdtemp(path.join(os.tmpdir(), 'foo-'));
+     * } catch (err) {
+     *   console.error(err);
+     * }
+     * ```
+     *
+     * The `fsPromises.mkdtemp()` method will append the six randomly selected
+     * characters directly to the `prefix` string. For instance, given a directory`/tmp`, if the intention is to create a temporary directory _within_`/tmp`, the`prefix` must end with a trailing
+     * platform-specific path separator
+     * (`require('path').sep`).
+     * @since v10.0.0
+     * @return Fulfills with a string containing the filesystem path of the newly created temporary directory.
+     */
+    function mkdtemp(prefix: string, options?: ObjectEncodingOptions | BufferEncoding | null): Promise<string>;
+    /**
+     * Asynchronously creates a unique temporary directory.
+     * Generates six random characters to be appended behind a required `prefix` to create a unique temporary directory.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    function mkdtemp(prefix: string, options: BufferEncodingOption): Promise<Buffer>;
+    /**
+     * Asynchronously creates a unique temporary directory.
+     * Generates six random characters to be appended behind a required `prefix` to create a unique temporary directory.
+     * @param options The encoding (or an object specifying the encoding), used as the encoding of the result. If not provided, `'utf8'` is used.
+     */
+    function mkdtemp(prefix: string, options?: ObjectEncodingOptions | BufferEncoding | null): Promise<string | Buffer>;
+    /**
+     * Asynchronously writes data to a file, replacing the file if it already exists.`data` can be a string, a buffer, an
+     * [AsyncIterable](https://tc39.github.io/ecma262/#sec-asynciterable-interface) or
+     * [Iterable](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Iteration_protocols#The_iterable_protocol) object.
+     *
+     * The `encoding` option is ignored if `data` is a buffer.
+     *
+     * If `options` is a string, then it specifies the encoding.
+     *
+     * The `mode` option only affects the newly created file. See `fs.open()` for more details.
+     *
+     * Any specified `FileHandle` has to support writing.
+     *
+     * It is unsafe to use `fsPromises.writeFile()` multiple times on the same file
+     * without waiting for the promise to be settled.
+     *
+     * Similarly to `fsPromises.readFile` \- `fsPromises.writeFile` is a convenience
+     * method that performs multiple `write` calls internally to write the buffer
+     * passed to it. For performance sensitive code consider using `fs.createWriteStream()` or `filehandle.createWriteStream()`.
+     *
+     * It is possible to use an `AbortSignal` to cancel an `fsPromises.writeFile()`.
+     * Cancelation is "best effort", and some amount of data is likely still
+     * to be written.
+     *
+     * ```js
+     * import { writeFile } from 'fs/promises';
+     * import { Buffer } from 'buffer';
+     *
+     * try {
+     *   const controller = new AbortController();
+     *   const { signal } = controller;
+     *   const data = new Uint8Array(Buffer.from('Hello Node.js'));
+     *   const promise = writeFile('message.txt', data, { signal });
+     *
+     *   // Abort the request before the promise settles.
+     *   controller.abort();
+     *
+     *   await promise;
+     * } catch (err) {
+     *   // When a request is aborted - err is an AbortError
+     *   console.error(err);
+     * }
+     * ```
+     *
+     * Aborting an ongoing request does not abort individual operating
+     * system requests but rather the internal buffering `fs.writeFile` performs.
+     * @since v10.0.0
+     * @param file filename or `FileHandle`
+     * @return Fulfills with `undefined` upon success.
+     */
+    function writeFile(
+        file: PathLike | FileHandle,
+        data: string | NodeJS.ArrayBufferView | Iterable<string | NodeJS.ArrayBufferView> | AsyncIterable<string | NodeJS.ArrayBufferView> | Stream,
+        options?:
+            | (ObjectEncodingOptions & {
+                  mode?: Mode | undefined;
+                  flag?: OpenMode | undefined;
+              } & Abortable)
+            | BufferEncoding
+            | null
+    ): Promise<void>;
+    /**
+     * Asynchronously append data to a file, creating the file if it does not yet
+     * exist. `data` can be a string or a `Buffer`.
+     *
+     * If `options` is a string, then it specifies the `encoding`.
+     *
+     * The `mode` option only affects the newly created file. See `fs.open()` for more details.
+     *
+     * The `path` may be specified as a `FileHandle` that has been opened
+     * for appending (using `fsPromises.open()`).
+     * @since v10.0.0
+     * @param path filename or {FileHandle}
+     * @return Fulfills with `undefined` upon success.
+     */
+    function appendFile(path: PathLike | FileHandle, data: string | Uint8Array, options?: (ObjectEncodingOptions & FlagAndOpenMode) | BufferEncoding | null): Promise<void>;
+    /**
+     * Asynchronously reads the entire contents of a file.
+     *
+     * If no encoding is specified (using `options.encoding`), the data is returned
+     * as a `Buffer` object. Otherwise, the data will be a string.
+     *
+     * If `options` is a string, then it specifies the encoding.
+     *
+     * When the `path` is a directory, the behavior of `fsPromises.readFile()` is
+     * platform-specific. On macOS, Linux, and Windows, the promise will be rejected
+     * with an error. On FreeBSD, a representation of the directory's contents will be
+     * returned.
+     *
+     * It is possible to abort an ongoing `readFile` using an `AbortSignal`. If a
+     * request is aborted the promise returned is rejected with an `AbortError`:
+     *
+     * ```js
+     * import { readFile } from 'fs/promises';
+     *
+     * try {
+     *   const controller = new AbortController();
+     *   const { signal } = controller;
+     *   const promise = readFile(fileName, { signal });
+     *
+     *   // Abort the request before the promise settles.
+     *   controller.abort();
+     *
+     *   await promise;
+     * } catch (err) {
+     *   // When a request is aborted - err is an AbortError
+     *   console.error(err);
+     * }
+     * ```
+     *
+     * Aborting an ongoing request does not abort individual operating
+     * system requests but rather the internal buffering `fs.readFile` performs.
+     *
+     * Any specified `FileHandle` has to support reading.
+     * @since v10.0.0
+     * @param path filename or `FileHandle`
+     * @return Fulfills with the contents of the file.
+     */
+    function readFile(
+        path: PathLike | FileHandle,
+        options?:
+            | ({
+                  encoding?: null | undefined;
+                  flag?: OpenMode | undefined;
+              } & Abortable)
+            | null
+    ): Promise<Buffer>;
+    /**
+     * Asynchronously reads the entire contents of a file.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a `FileHandle` is provided, the underlying file will _not_ be closed automatically.
+     * @param options An object that may contain an optional flag.
+     * If a flag is not provided, it defaults to `'r'`.
+     */
+    function readFile(
+        path: PathLike | FileHandle,
+        options:
+            | ({
+                  encoding: BufferEncoding;
+                  flag?: OpenMode | undefined;
+              } & Abortable)
+            | BufferEncoding
+    ): Promise<string>;
+    /**
+     * Asynchronously reads the entire contents of a file.
+     * @param path A path to a file. If a URL is provided, it must use the `file:` protocol.
+     * If a `FileHandle` is provided, the underlying file will _not_ be closed automatically.
+     * @param options An object that may contain an optional flag.
+     * If a flag is not provided, it defaults to `'r'`.
+     */
+    function readFile(
+        path: PathLike | FileHandle,
+        options?:
+            | (ObjectEncodingOptions &
+                  Abortable & {
+                      flag?: OpenMode | undefined;
+                  })
+            | BufferEncoding
+            | null
+    ): Promise<string | Buffer>;
+    /**
+     * Asynchronously open a directory for iterative scanning. See the POSIX [`opendir(3)`](http://man7.org/linux/man-pages/man3/opendir.3.html) documentation for more detail.
+     *
+     * Creates an `fs.Dir`, which contains all further functions for reading from
+     * and cleaning up the directory.
+     *
+     * The `encoding` option sets the encoding for the `path` while opening the
+     * directory and subsequent read operations.
+     *
+     * Example using async iteration:
+     *
+     * ```js
+     * import { opendir } from 'fs/promises';
+     *
+     * try {
+     *   const dir = await opendir('./');
+     *   for await (const dirent of dir)
+     *     console.log(dirent.name);
+     * } catch (err) {
+     *   console.error(err);
+     * }
+     * ```
+     *
+     * When using the async iterator, the `fs.Dir` object will be automatically
+     * closed after the iterator exits.
+     * @since v12.12.0
+     * @return Fulfills with an {fs.Dir}.
+     */
+    function opendir(path: PathLike, options?: OpenDirOptions): Promise<Dir>;
+    /**
+     * Returns an async iterator that watches for changes on `filename`, where `filename`is either a file or a directory.
+     *
+     * ```js
+     * const { watch } = require('fs/promises');
+     *
+     * const ac = new AbortController();
+     * const { signal } = ac;
+     * setTimeout(() => ac.abort(), 10000);
+     *
+     * (async () => {
+     *   try {
+     *     const watcher = watch(__filename, { signal });
+     *     for await (const event of watcher)
+     *       console.log(event);
+     *   } catch (err) {
+     *     if (err.name === 'AbortError')
+     *       return;
+     *     throw err;
+     *   }
+     * })();
+     * ```
+     *
+     * On most platforms, `'rename'` is emitted whenever a filename appears or
+     * disappears in the directory.
+     *
+     * All the `caveats` for `fs.watch()` also apply to `fsPromises.watch()`.
+     * @since v15.9.0, v14.18.0
+     * @return of objects with the properties:
+     */
+    function watch(
+        filename: PathLike,
+        options:
+            | (WatchOptions & {
+                  encoding: 'buffer';
+              })
+            | 'buffer'
+    ): AsyncIterable<FileChangeInfo<Buffer>>;
+    /**
+     * Watch for changes on `filename`, where `filename` is either a file or a directory, returning an `FSWatcher`.
+     * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the encoding for the filename provided to the listener, or an object optionally specifying encoding, persistent, and recursive options.
+     * If `encoding` is not supplied, the default of `'utf8'` is used.
+     * If `persistent` is not supplied, the default of `true` is used.
+     * If `recursive` is not supplied, the default of `false` is used.
+     */
+    function watch(filename: PathLike, options?: WatchOptions | BufferEncoding): AsyncIterable<FileChangeInfo<string>>;
+    /**
+     * Watch for changes on `filename`, where `filename` is either a file or a directory, returning an `FSWatcher`.
+     * @param filename A path to a file or directory. If a URL is provided, it must use the `file:` protocol.
+     * @param options Either the encoding for the filename provided to the listener, or an object optionally specifying encoding, persistent, and recursive options.
+     * If `encoding` is not supplied, the default of `'utf8'` is used.
+     * If `persistent` is not supplied, the default of `true` is used.
+     * If `recursive` is not supplied, the default of `false` is used.
+     */
+    function watch(filename: PathLike, options: WatchOptions | string): AsyncIterable<FileChangeInfo<string>> | AsyncIterable<FileChangeInfo<Buffer>>;
+    /**
+     * Asynchronously copies the entire directory structure from `src` to `dest`,
+     * including subdirectories and files.
+     *
+     * When copying a directory to another directory, globs are not supported and
+     * behavior is similar to `cp dir1/ dir2/`.
+     * @since v16.7.0
+     * @experimental
+     * @param src source path to copy.
+     * @param dest destination path to copy to.
+     * @return Fulfills with `undefined` upon success.
+     */
+    function cp(source: string | URL, destination: string | URL, opts?: CopyOptions): Promise<void>;
+}
+declare module 'node:fs/promises' {
+    export * from 'fs/promises';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/globals.d.ts b/igv_component/node_modules/@types/node/ts4.8/globals.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..da499940ebbaa462edb8ce6c2dd2f1b67a19b925
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/globals.d.ts
@@ -0,0 +1,294 @@
+// Declare "static" methods in Error
+interface ErrorConstructor {
+    /** Create .stack property on a target object */
+    captureStackTrace(targetObject: object, constructorOpt?: Function): void;
+
+    /**
+     * Optional override for formatting stack traces
+     *
+     * @see https://v8.dev/docs/stack-trace-api#customizing-stack-traces
+     */
+    prepareStackTrace?: ((err: Error, stackTraces: NodeJS.CallSite[]) => any) | undefined;
+
+    stackTraceLimit: number;
+}
+
+/*-----------------------------------------------*
+ *                                               *
+ *                   GLOBAL                      *
+ *                                               *
+ ------------------------------------------------*/
+
+// For backwards compability
+interface NodeRequire extends NodeJS.Require { }
+interface RequireResolve extends NodeJS.RequireResolve { }
+interface NodeModule extends NodeJS.Module { }
+
+declare var process: NodeJS.Process;
+declare var console: Console;
+
+declare var __filename: string;
+declare var __dirname: string;
+
+declare var require: NodeRequire;
+declare var module: NodeModule;
+
+// Same as module.exports
+declare var exports: any;
+
+/**
+ * Only available if `--expose-gc` is passed to the process.
+ */
+declare var gc: undefined | (() => void);
+
+//#region borrowed
+// from https://github.com/microsoft/TypeScript/blob/38da7c600c83e7b31193a62495239a0fe478cb67/lib/lib.webworker.d.ts#L633 until moved to separate lib
+/** A controller object that allows you to abort one or more DOM requests as and when desired. */
+interface AbortController {
+    /**
+     * Returns the AbortSignal object associated with this object.
+     */
+
+    readonly signal: AbortSignal;
+    /**
+     * Invoking this method will set this object's AbortSignal's aborted flag and signal to any observers that the associated activity is to be aborted.
+     */
+    abort(): void;
+}
+
+/** A signal object that allows you to communicate with a DOM request (such as a Fetch) and abort it if required via an AbortController object. */
+interface AbortSignal {
+    /**
+     * Returns true if this AbortSignal's AbortController has signaled to abort, and false otherwise.
+     */
+    readonly aborted: boolean;
+}
+
+declare var AbortController: {
+    prototype: AbortController;
+    new(): AbortController;
+};
+
+declare var AbortSignal: {
+    prototype: AbortSignal;
+    new(): AbortSignal;
+    // TODO: Add abort() static
+};
+//#endregion borrowed
+
+//#region ArrayLike.at()
+interface RelativeIndexable<T> {
+    /**
+     * Takes an integer value and returns the item at that index,
+     * allowing for positive and negative integers.
+     * Negative integers count back from the last item in the array.
+     */
+    at(index: number): T | undefined;
+}
+interface String extends RelativeIndexable<string> {}
+interface Array<T> extends RelativeIndexable<T> {}
+interface Int8Array extends RelativeIndexable<number> {}
+interface Uint8Array extends RelativeIndexable<number> {}
+interface Uint8ClampedArray extends RelativeIndexable<number> {}
+interface Int16Array extends RelativeIndexable<number> {}
+interface Uint16Array extends RelativeIndexable<number> {}
+interface Int32Array extends RelativeIndexable<number> {}
+interface Uint32Array extends RelativeIndexable<number> {}
+interface Float32Array extends RelativeIndexable<number> {}
+interface Float64Array extends RelativeIndexable<number> {}
+interface BigInt64Array extends RelativeIndexable<bigint> {}
+interface BigUint64Array extends RelativeIndexable<bigint> {}
+//#endregion ArrayLike.at() end
+
+/**
+ * @since v17.0.0
+ *
+ * Creates a deep clone of an object.
+ */
+declare function structuredClone<T>(
+    value: T,
+    transfer?: { transfer: ReadonlyArray<import('worker_threads').TransferListItem> },
+): T;
+
+/*----------------------------------------------*
+*                                               *
+*               GLOBAL INTERFACES               *
+*                                               *
+*-----------------------------------------------*/
+declare namespace NodeJS {
+    interface CallSite {
+        /**
+         * Value of "this"
+         */
+        getThis(): unknown;
+
+        /**
+         * Type of "this" as a string.
+         * This is the name of the function stored in the constructor field of
+         * "this", if available.  Otherwise the object's [[Class]] internal
+         * property.
+         */
+        getTypeName(): string | null;
+
+        /**
+         * Current function
+         */
+        getFunction(): Function | undefined;
+
+        /**
+         * Name of the current function, typically its name property.
+         * If a name property is not available an attempt will be made to try
+         * to infer a name from the function's context.
+         */
+        getFunctionName(): string | null;
+
+        /**
+         * Name of the property [of "this" or one of its prototypes] that holds
+         * the current function
+         */
+        getMethodName(): string | null;
+
+        /**
+         * Name of the script [if this function was defined in a script]
+         */
+        getFileName(): string | null;
+
+        /**
+         * Current line number [if this function was defined in a script]
+         */
+        getLineNumber(): number | null;
+
+        /**
+         * Current column number [if this function was defined in a script]
+         */
+        getColumnNumber(): number | null;
+
+        /**
+         * A call site object representing the location where eval was called
+         * [if this function was created using a call to eval]
+         */
+        getEvalOrigin(): string | undefined;
+
+        /**
+         * Is this a toplevel invocation, that is, is "this" the global object?
+         */
+        isToplevel(): boolean;
+
+        /**
+         * Does this call take place in code defined by a call to eval?
+         */
+        isEval(): boolean;
+
+        /**
+         * Is this call in native V8 code?
+         */
+        isNative(): boolean;
+
+        /**
+         * Is this a constructor call?
+         */
+        isConstructor(): boolean;
+    }
+
+    interface ErrnoException extends Error {
+        errno?: number | undefined;
+        code?: string | undefined;
+        path?: string | undefined;
+        syscall?: string | undefined;
+    }
+
+    interface ReadableStream extends EventEmitter {
+        readable: boolean;
+        read(size?: number): string | Buffer;
+        setEncoding(encoding: BufferEncoding): this;
+        pause(): this;
+        resume(): this;
+        isPaused(): boolean;
+        pipe<T extends WritableStream>(destination: T, options?: { end?: boolean | undefined; }): T;
+        unpipe(destination?: WritableStream): this;
+        unshift(chunk: string | Uint8Array, encoding?: BufferEncoding): void;
+        wrap(oldStream: ReadableStream): this;
+        [Symbol.asyncIterator](): AsyncIterableIterator<string | Buffer>;
+    }
+
+    interface WritableStream extends EventEmitter {
+        writable: boolean;
+        write(buffer: Uint8Array | string, cb?: (err?: Error | null) => void): boolean;
+        write(str: string, encoding?: BufferEncoding, cb?: (err?: Error | null) => void): boolean;
+        end(cb?: () => void): this;
+        end(data: string | Uint8Array, cb?: () => void): this;
+        end(str: string, encoding?: BufferEncoding, cb?: () => void): this;
+    }
+
+    interface ReadWriteStream extends ReadableStream, WritableStream { }
+
+    interface RefCounted {
+        ref(): this;
+        unref(): this;
+    }
+
+    type TypedArray =
+        | Uint8Array
+        | Uint8ClampedArray
+        | Uint16Array
+        | Uint32Array
+        | Int8Array
+        | Int16Array
+        | Int32Array
+        | BigUint64Array
+        | BigInt64Array
+        | Float32Array
+        | Float64Array;
+    type ArrayBufferView = TypedArray | DataView;
+
+    interface Require {
+        (id: string): any;
+        resolve: RequireResolve;
+        cache: Dict<NodeModule>;
+        /**
+         * @deprecated
+         */
+        extensions: RequireExtensions;
+        main: Module | undefined;
+    }
+
+    interface RequireResolve {
+        (id: string, options?: { paths?: string[] | undefined; }): string;
+        paths(request: string): string[] | null;
+    }
+
+    interface RequireExtensions extends Dict<(m: Module, filename: string) => any> {
+        '.js': (m: Module, filename: string) => any;
+        '.json': (m: Module, filename: string) => any;
+        '.node': (m: Module, filename: string) => any;
+    }
+    interface Module {
+        /**
+         * `true` if the module is running during the Node.js preload
+         */
+        isPreloading: boolean;
+        exports: any;
+        require: Require;
+        id: string;
+        filename: string;
+        loaded: boolean;
+        /** @deprecated since v14.6.0 Please use `require.main` and `module.children` instead. */
+        parent: Module | null | undefined;
+        children: Module[];
+        /**
+         * @since v11.14.0
+         *
+         * The directory name of the module. This is usually the same as the path.dirname() of the module.id.
+         */
+        path: string;
+        paths: string[];
+    }
+
+    interface Dict<T> {
+        [key: string]: T | undefined;
+    }
+
+    interface ReadOnlyDict<T> {
+        readonly [key: string]: T | undefined;
+    }
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/globals.global.d.ts b/igv_component/node_modules/@types/node/ts4.8/globals.global.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..ef1198c05024940c44e3c1a6429c26091fe2a94f
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/globals.global.d.ts
@@ -0,0 +1 @@
+declare var global: typeof globalThis;
diff --git a/igv_component/node_modules/@types/node/ts4.8/http.d.ts b/igv_component/node_modules/@types/node/ts4.8/http.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..24bc5e78ddb06406f7a153cd76c47058a5b9de9b
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/http.d.ts
@@ -0,0 +1,1553 @@
+/**
+ * To use the HTTP server and client one must `require('http')`.
+ *
+ * The HTTP interfaces in Node.js are designed to support many features
+ * of the protocol which have been traditionally difficult to use.
+ * In particular, large, possibly chunk-encoded, messages. The interface is
+ * careful to never buffer entire requests or responses, so the
+ * user is able to stream data.
+ *
+ * HTTP message headers are represented by an object like this:
+ *
+ * ```js
+ * { 'content-length': '123',
+ *   'content-type': 'text/plain',
+ *   'connection': 'keep-alive',
+ *   'host': 'example.com',
+ *   'accept': '*' }
+ * ```
+ *
+ * Keys are lowercased. Values are not modified.
+ *
+ * In order to support the full spectrum of possible HTTP applications, the Node.js
+ * HTTP API is very low-level. It deals with stream handling and message
+ * parsing only. It parses a message into headers and body but it does not
+ * parse the actual headers or the body.
+ *
+ * See `message.headers` for details on how duplicate headers are handled.
+ *
+ * The raw headers as they were received are retained in the `rawHeaders`property, which is an array of `[key, value, key2, value2, ...]`. For
+ * example, the previous message header object might have a `rawHeaders`list like the following:
+ *
+ * ```js
+ * [ 'ConTent-Length', '123456',
+ *   'content-LENGTH', '123',
+ *   'content-type', 'text/plain',
+ *   'CONNECTION', 'keep-alive',
+ *   'Host', 'example.com',
+ *   'accepT', '*' ]
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/http.js)
+ */
+declare module 'http' {
+    import * as stream from 'node:stream';
+    import { URL } from 'node:url';
+    import { TcpSocketConnectOpts, Socket, Server as NetServer, LookupFunction } from 'node:net';
+    // incoming headers will never contain number
+    interface IncomingHttpHeaders extends NodeJS.Dict<string | string[]> {
+        accept?: string | undefined;
+        'accept-language'?: string | undefined;
+        'accept-patch'?: string | undefined;
+        'accept-ranges'?: string | undefined;
+        'access-control-allow-credentials'?: string | undefined;
+        'access-control-allow-headers'?: string | undefined;
+        'access-control-allow-methods'?: string | undefined;
+        'access-control-allow-origin'?: string | undefined;
+        'access-control-expose-headers'?: string | undefined;
+        'access-control-max-age'?: string | undefined;
+        'access-control-request-headers'?: string | undefined;
+        'access-control-request-method'?: string | undefined;
+        age?: string | undefined;
+        allow?: string | undefined;
+        'alt-svc'?: string | undefined;
+        authorization?: string | undefined;
+        'cache-control'?: string | undefined;
+        connection?: string | undefined;
+        'content-disposition'?: string | undefined;
+        'content-encoding'?: string | undefined;
+        'content-language'?: string | undefined;
+        'content-length'?: string | undefined;
+        'content-location'?: string | undefined;
+        'content-range'?: string | undefined;
+        'content-type'?: string | undefined;
+        cookie?: string | undefined;
+        date?: string | undefined;
+        etag?: string | undefined;
+        expect?: string | undefined;
+        expires?: string | undefined;
+        forwarded?: string | undefined;
+        from?: string | undefined;
+        host?: string | undefined;
+        'if-match'?: string | undefined;
+        'if-modified-since'?: string | undefined;
+        'if-none-match'?: string | undefined;
+        'if-unmodified-since'?: string | undefined;
+        'last-modified'?: string | undefined;
+        location?: string | undefined;
+        origin?: string | undefined;
+        pragma?: string | undefined;
+        'proxy-authenticate'?: string | undefined;
+        'proxy-authorization'?: string | undefined;
+        'public-key-pins'?: string | undefined;
+        range?: string | undefined;
+        referer?: string | undefined;
+        'retry-after'?: string | undefined;
+        'sec-websocket-accept'?: string | undefined;
+        'sec-websocket-extensions'?: string | undefined;
+        'sec-websocket-key'?: string | undefined;
+        'sec-websocket-protocol'?: string | undefined;
+        'sec-websocket-version'?: string | undefined;
+        'set-cookie'?: string[] | undefined;
+        'strict-transport-security'?: string | undefined;
+        tk?: string | undefined;
+        trailer?: string | undefined;
+        'transfer-encoding'?: string | undefined;
+        upgrade?: string | undefined;
+        'user-agent'?: string | undefined;
+        vary?: string | undefined;
+        via?: string | undefined;
+        warning?: string | undefined;
+        'www-authenticate'?: string | undefined;
+    }
+    // outgoing headers allows numbers (as they are converted internally to strings)
+    type OutgoingHttpHeader = number | string | string[];
+    interface OutgoingHttpHeaders extends NodeJS.Dict<OutgoingHttpHeader> {}
+    interface ClientRequestArgs {
+        signal?: AbortSignal | undefined;
+        protocol?: string | null | undefined;
+        host?: string | null | undefined;
+        hostname?: string | null | undefined;
+        family?: number | undefined;
+        port?: number | string | null | undefined;
+        defaultPort?: number | string | undefined;
+        localAddress?: string | undefined;
+        socketPath?: string | undefined;
+        /**
+         * @default 8192
+         */
+        maxHeaderSize?: number | undefined;
+        method?: string | undefined;
+        path?: string | null | undefined;
+        headers?: OutgoingHttpHeaders | undefined;
+        auth?: string | null | undefined;
+        agent?: Agent | boolean | undefined;
+        _defaultAgent?: Agent | undefined;
+        timeout?: number | undefined;
+        setHost?: boolean | undefined;
+        // https://github.com/nodejs/node/blob/master/lib/_http_client.js#L278
+        createConnection?:
+            | ((options: ClientRequestArgs, oncreate: (err: Error, socket: Socket) => void) => Socket)
+            | undefined;
+        lookup?: LookupFunction | undefined;
+    }
+    interface ServerOptions<
+        Request extends typeof IncomingMessage = typeof IncomingMessage,
+        Response extends typeof ServerResponse = typeof ServerResponse,
+    > {
+        IncomingMessage?: Request | undefined;
+        ServerResponse?: Response | undefined;
+        /**
+         * Optionally overrides the value of
+         * `--max-http-header-size` for requests received by this server, i.e.
+         * the maximum length of request headers in bytes.
+         * @default 8192
+         */
+        maxHeaderSize?: number | undefined;
+        /**
+         * Use an insecure HTTP parser that accepts invalid HTTP headers when true.
+         * Using the insecure parser should be avoided.
+         * See --insecure-http-parser for more information.
+         * @default false
+         */
+        insecureHTTPParser?: boolean | undefined;
+        /**
+         * If set to `true`, it disables the use of Nagle's algorithm immediately after a new incoming connection is received.
+         * @default false
+         * @since v16.5.0
+         */
+        noDelay?: boolean | undefined;
+        /**
+         * If set to `true`, it enables keep-alive functionality on the socket immediately after a new incoming connection is received,
+         * similarly on what is done in `socket.setKeepAlive([enable][, initialDelay])`.
+         * @default false
+         * @since v16.5.0
+         */
+        keepAlive?: boolean | undefined;
+        /**
+         * If set to a positive number, it sets the initial delay before the first keepalive probe is sent on an idle socket.
+         * @default 0
+         * @since v16.5.0
+         */
+        keepAliveInitialDelay?: number | undefined;
+    }
+    type RequestListener<
+        Request extends typeof IncomingMessage = typeof IncomingMessage,
+        Response extends typeof ServerResponse = typeof ServerResponse,
+    > = (req: InstanceType<Request>, res: InstanceType<Response> & { req: InstanceType<Request> }) => void;
+    /**
+     * @since v0.1.17
+     */
+    class Server<
+        Request extends typeof IncomingMessage = typeof IncomingMessage,
+        Response extends typeof ServerResponse = typeof ServerResponse,
+    > extends NetServer {
+        constructor(requestListener?: RequestListener<Request, Response>);
+        constructor(options: ServerOptions<Request, Response>, requestListener?: RequestListener<Request, Response>);
+        /**
+         * Sets the timeout value for sockets, and emits a `'timeout'` event on
+         * the Server object, passing the socket as an argument, if a timeout
+         * occurs.
+         *
+         * If there is a `'timeout'` event listener on the Server object, then it
+         * will be called with the timed-out socket as an argument.
+         *
+         * By default, the Server does not timeout sockets. However, if a callback
+         * is assigned to the Server's `'timeout'` event, timeouts must be handled
+         * explicitly.
+         * @since v0.9.12
+         * @param [msecs=0 (no timeout)]
+         */
+        setTimeout(msecs?: number, callback?: () => void): this;
+        setTimeout(callback: () => void): this;
+        /**
+         * Limits maximum incoming headers count. If set to 0, no limit will be applied.
+         * @since v0.7.0
+         */
+        maxHeadersCount: number | null;
+        /**
+         * The maximum number of requests socket can handle
+         * before closing keep alive connection.
+         *
+         * A value of `0` will disable the limit.
+         *
+         * When the limit is reached it will set the `Connection` header value to `close`,
+         * but will not actually close the connection, subsequent requests sent
+         * after the limit is reached will get `503 Service Unavailable` as a response.
+         * @since v16.10.0
+         */
+        maxRequestsPerSocket: number | null;
+        /**
+         * The number of milliseconds of inactivity before a socket is presumed
+         * to have timed out.
+         *
+         * A value of `0` will disable the timeout behavior on incoming connections.
+         *
+         * The socket timeout logic is set up on connection, so changing this
+         * value only affects new connections to the server, not any existing connections.
+         * @since v0.9.12
+         */
+        timeout: number;
+        /**
+         * Limit the amount of time the parser will wait to receive the complete HTTP
+         * headers.
+         *
+         * If the timeout expires, the server responds with status 408 without
+         * forwarding the request to the request listener and then closes the connection.
+         *
+         * It must be set to a non-zero value (e.g. 120 seconds) to protect against
+         * potential Denial-of-Service attacks in case the server is deployed without a
+         * reverse proxy in front.
+         * @since v11.3.0, v10.14.0
+         */
+        headersTimeout: number;
+        /**
+         * The number of milliseconds of inactivity a server needs to wait for additional
+         * incoming data, after it has finished writing the last response, before a socket
+         * will be destroyed. If the server receives new data before the keep-alive
+         * timeout has fired, it will reset the regular inactivity timeout, i.e.,`server.timeout`.
+         *
+         * A value of `0` will disable the keep-alive timeout behavior on incoming
+         * connections.
+         * A value of `0` makes the http server behave similarly to Node.js versions prior
+         * to 8.0.0, which did not have a keep-alive timeout.
+         *
+         * The socket timeout logic is set up on connection, so changing this value only
+         * affects new connections to the server, not any existing connections.
+         * @since v8.0.0
+         */
+        keepAliveTimeout: number;
+        /**
+         * Sets the timeout value in milliseconds for receiving the entire request from
+         * the client.
+         *
+         * If the timeout expires, the server responds with status 408 without
+         * forwarding the request to the request listener and then closes the connection.
+         *
+         * It must be set to a non-zero value (e.g. 120 seconds) to protect against
+         * potential Denial-of-Service attacks in case the server is deployed without a
+         * reverse proxy in front.
+         * @since v14.11.0
+         */
+        requestTimeout: number;
+        /**
+         * Closes all connections connected to this server.
+         * @since v18.2.0
+         */
+        closeAllConnections(): void;
+        /**
+         * Closes all connections connected to this server which are not sending a request or waiting for a response.
+         * @since v18.2.0
+         */
+        closeIdleConnections(): void;
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'connection', listener: (socket: Socket) => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'listening', listener: () => void): this;
+        addListener(event: 'checkContinue', listener: RequestListener<Request, Response>): this;
+        addListener(event: 'checkExpectation', listener: RequestListener<Request, Response>): this;
+        addListener(event: 'clientError', listener: (err: Error, socket: stream.Duplex) => void): this;
+        addListener(
+            event: 'connect',
+            listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void,
+        ): this;
+        addListener(event: 'request', listener: RequestListener<Request, Response>): this;
+        addListener(
+            event: 'upgrade',
+            listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void,
+        ): this;
+        emit(event: string, ...args: any[]): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'connection', socket: Socket): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'listening'): boolean;
+        emit(
+            event: 'checkContinue',
+            req: InstanceType<Request>,
+            res: InstanceType<Response> & { req: InstanceType<Request> },
+        ): boolean;
+        emit(
+            event: 'checkExpectation',
+            req: InstanceType<Request>,
+            res: InstanceType<Response> & { req: InstanceType<Request> },
+        ): boolean;
+        emit(event: 'clientError', err: Error, socket: stream.Duplex): boolean;
+        emit(event: 'connect', req: InstanceType<Request>, socket: stream.Duplex, head: Buffer): boolean;
+        emit(
+            event: 'request',
+            req: InstanceType<Request>,
+            res: InstanceType<Response> & { req: InstanceType<Request> },
+        ): boolean;
+        emit(event: 'upgrade', req: InstanceType<Request>, socket: stream.Duplex, head: Buffer): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'connection', listener: (socket: Socket) => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'listening', listener: () => void): this;
+        on(event: 'checkContinue', listener: RequestListener<Request, Response>): this;
+        on(event: 'checkExpectation', listener: RequestListener<Request, Response>): this;
+        on(event: 'clientError', listener: (err: Error, socket: stream.Duplex) => void): this;
+        on(event: 'connect', listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void): this;
+        on(event: 'request', listener: RequestListener<Request, Response>): this;
+        on(event: 'upgrade', listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'connection', listener: (socket: Socket) => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'listening', listener: () => void): this;
+        once(event: 'checkContinue', listener: RequestListener<Request, Response>): this;
+        once(event: 'checkExpectation', listener: RequestListener<Request, Response>): this;
+        once(event: 'clientError', listener: (err: Error, socket: stream.Duplex) => void): this;
+        once(
+            event: 'connect',
+            listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void,
+        ): this;
+        once(event: 'request', listener: RequestListener<Request, Response>): this;
+        once(
+            event: 'upgrade',
+            listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void,
+        ): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'connection', listener: (socket: Socket) => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'listening', listener: () => void): this;
+        prependListener(event: 'checkContinue', listener: RequestListener<Request, Response>): this;
+        prependListener(event: 'checkExpectation', listener: RequestListener<Request, Response>): this;
+        prependListener(event: 'clientError', listener: (err: Error, socket: stream.Duplex) => void): this;
+        prependListener(
+            event: 'connect',
+            listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void,
+        ): this;
+        prependListener(event: 'request', listener: RequestListener<Request, Response>): this;
+        prependListener(
+            event: 'upgrade',
+            listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void,
+        ): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'connection', listener: (socket: Socket) => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'listening', listener: () => void): this;
+        prependOnceListener(event: 'checkContinue', listener: RequestListener<Request, Response>): this;
+        prependOnceListener(event: 'checkExpectation', listener: RequestListener<Request, Response>): this;
+        prependOnceListener(event: 'clientError', listener: (err: Error, socket: stream.Duplex) => void): this;
+        prependOnceListener(
+            event: 'connect',
+            listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void,
+        ): this;
+        prependOnceListener(event: 'request', listener: RequestListener<Request, Response>): this;
+        prependOnceListener(
+            event: 'upgrade',
+            listener: (req: InstanceType<Request>, socket: stream.Duplex, head: Buffer) => void,
+        ): this;
+    }
+    /**
+     * This class serves as the parent class of {@link ClientRequest} and {@link ServerResponse}. It is an abstract of outgoing message from
+     * the perspective of the participants of HTTP transaction.
+     * @since v0.1.17
+     */
+    class OutgoingMessage<Request extends IncomingMessage = IncomingMessage> extends stream.Writable {
+        readonly req: Request;
+        chunkedEncoding: boolean;
+        shouldKeepAlive: boolean;
+        useChunkedEncodingByDefault: boolean;
+        sendDate: boolean;
+        /**
+         * @deprecated Use `writableEnded` instead.
+         */
+        finished: boolean;
+        /**
+         * Read-only. `true` if the headers were sent, otherwise `false`.
+         * @since v0.9.3
+         */
+        readonly headersSent: boolean;
+        /**
+         * Aliases of `outgoingMessage.socket`
+         * @since v0.3.0
+         * @deprecated Since v15.12.0,v14.17.1 - Use `socket` instead.
+         */
+        readonly connection: Socket | null;
+        /**
+         * Reference to the underlying socket. Usually, users will not want to access
+         * this property.
+         *
+         * After calling `outgoingMessage.end()`, this property will be nulled.
+         * @since v0.3.0
+         */
+        readonly socket: Socket | null;
+        constructor();
+        /**
+         * Once a socket is associated with the message and is connected,`socket.setTimeout()` will be called with `msecs` as the first parameter.
+         * @since v0.9.12
+         * @param callback Optional function to be called when a timeout occurs. Same as binding to the `timeout` event.
+         */
+        setTimeout(msecs: number, callback?: () => void): this;
+        /**
+         * Sets a single header value for the header object.
+         * @since v0.4.0
+         * @param name Header name
+         * @param value Header value
+         */
+        setHeader(name: string, value: number | string | ReadonlyArray<string>): this;
+        /**
+         * Gets the value of HTTP header with the given name. If such a name doesn't
+         * exist in message, it will be `undefined`.
+         * @since v0.4.0
+         * @param name Name of header
+         */
+        getHeader(name: string): number | string | string[] | undefined;
+        /**
+         * Returns a shallow copy of the current outgoing headers. Since a shallow
+         * copy is used, array values may be mutated without additional calls to
+         * various header-related HTTP module methods. The keys of the returned
+         * object are the header names and the values are the respective header
+         * values. All header names are lowercase.
+         *
+         * The object returned by the `outgoingMessage.getHeaders()` method does
+         * not prototypically inherit from the JavaScript Object. This means that
+         * typical Object methods such as `obj.toString()`, `obj.hasOwnProperty()`,
+         * and others are not defined and will not work.
+         *
+         * ```js
+         * outgoingMessage.setHeader('Foo', 'bar');
+         * outgoingMessage.setHeader('Set-Cookie', ['foo=bar', 'bar=baz']);
+         *
+         * const headers = outgoingMessage.getHeaders();
+         * // headers === { foo: 'bar', 'set-cookie': ['foo=bar', 'bar=baz'] }
+         * ```
+         * @since v7.7.0
+         */
+        getHeaders(): OutgoingHttpHeaders;
+        /**
+         * Returns an array of names of headers of the outgoing outgoingMessage. All
+         * names are lowercase.
+         * @since v7.7.0
+         */
+        getHeaderNames(): string[];
+        /**
+         * Returns `true` if the header identified by `name` is currently set in the
+         * outgoing headers. The header name is case-insensitive.
+         *
+         * ```js
+         * const hasContentType = outgoingMessage.hasHeader('content-type');
+         * ```
+         * @since v7.7.0
+         */
+        hasHeader(name: string): boolean;
+        /**
+         * Removes a header that is queued for implicit sending.
+         *
+         * ```js
+         * outgoingMessage.removeHeader('Content-Encoding');
+         * ```
+         * @since v0.4.0
+         * @param name Header name
+         */
+        removeHeader(name: string): void;
+        /**
+         * Adds HTTP trailers (headers but at the end of the message) to the message.
+         *
+         * Trailers are **only** be emitted if the message is chunked encoded. If not,
+         * the trailer will be silently discarded.
+         *
+         * HTTP requires the `Trailer` header to be sent to emit trailers,
+         * with a list of header fields in its value, e.g.
+         *
+         * ```js
+         * message.writeHead(200, { 'Content-Type': 'text/plain',
+         *                          'Trailer': 'Content-MD5' });
+         * message.write(fileData);
+         * message.addTrailers({ 'Content-MD5': '7895bf4b8828b55ceaf47747b4bca667' });
+         * message.end();
+         * ```
+         *
+         * Attempting to set a header field name or value that contains invalid characters
+         * will result in a `TypeError` being thrown.
+         * @since v0.3.0
+         */
+        addTrailers(headers: OutgoingHttpHeaders | ReadonlyArray<[string, string]>): void;
+        /**
+         * Compulsorily flushes the message headers
+         *
+         * For efficiency reason, Node.js normally buffers the message headers
+         * until `outgoingMessage.end()` is called or the first chunk of message data
+         * is written. It then tries to pack the headers and data into a single TCP
+         * packet.
+         *
+         * It is usually desired (it saves a TCP round-trip), but not when the first
+         * data is not sent until possibly much later. `outgoingMessage.flushHeaders()`bypasses the optimization and kickstarts the request.
+         * @since v1.6.0
+         */
+        flushHeaders(): void;
+    }
+    /**
+     * This object is created internally by an HTTP server, not by the user. It is
+     * passed as the second parameter to the `'request'` event.
+     * @since v0.1.17
+     */
+    class ServerResponse<Request extends IncomingMessage = IncomingMessage> extends OutgoingMessage<Request> {
+        /**
+         * When using implicit headers (not calling `response.writeHead()` explicitly),
+         * this property controls the status code that will be sent to the client when
+         * the headers get flushed.
+         *
+         * ```js
+         * response.statusCode = 404;
+         * ```
+         *
+         * After response header was sent to the client, this property indicates the
+         * status code which was sent out.
+         * @since v0.4.0
+         */
+        statusCode: number;
+        /**
+         * When using implicit headers (not calling `response.writeHead()` explicitly),
+         * this property controls the status message that will be sent to the client when
+         * the headers get flushed. If this is left as `undefined` then the standard
+         * message for the status code will be used.
+         *
+         * ```js
+         * response.statusMessage = 'Not found';
+         * ```
+         *
+         * After response header was sent to the client, this property indicates the
+         * status message which was sent out.
+         * @since v0.11.8
+         */
+        statusMessage: string;
+        constructor(req: Request);
+        assignSocket(socket: Socket): void;
+        detachSocket(socket: Socket): void;
+        /**
+         * Sends a HTTP/1.1 100 Continue message to the client, indicating that
+         * the request body should be sent. See the `'checkContinue'` event on`Server`.
+         * @since v0.3.0
+         */
+        writeContinue(callback?: () => void): void;
+        /**
+         * Sends a response header to the request. The status code is a 3-digit HTTP
+         * status code, like `404`. The last argument, `headers`, are the response headers.
+         * Optionally one can give a human-readable `statusMessage` as the second
+         * argument.
+         *
+         * `headers` may be an `Array` where the keys and values are in the same list.
+         * It is _not_ a list of tuples. So, the even-numbered offsets are key values,
+         * and the odd-numbered offsets are the associated values. The array is in the same
+         * format as `request.rawHeaders`.
+         *
+         * Returns a reference to the `ServerResponse`, so that calls can be chained.
+         *
+         * ```js
+         * const body = 'hello world';
+         * response
+         *   .writeHead(200, {
+         *     'Content-Length': Buffer.byteLength(body),
+         *     'Content-Type': 'text/plain'
+         *   })
+         *   .end(body);
+         * ```
+         *
+         * This method must only be called once on a message and it must
+         * be called before `response.end()` is called.
+         *
+         * If `response.write()` or `response.end()` are called before calling
+         * this, the implicit/mutable headers will be calculated and call this function.
+         *
+         * When headers have been set with `response.setHeader()`, they will be merged
+         * with any headers passed to `response.writeHead()`, with the headers passed
+         * to `response.writeHead()` given precedence.
+         *
+         * If this method is called and `response.setHeader()` has not been called,
+         * it will directly write the supplied header values onto the network channel
+         * without caching internally, and the `response.getHeader()` on the header
+         * will not yield the expected result. If progressive population of headers is
+         * desired with potential future retrieval and modification, use `response.setHeader()` instead.
+         *
+         * ```js
+         * // Returns content-type = text/plain
+         * const server = http.createServer((req, res) => {
+         *   res.setHeader('Content-Type', 'text/html');
+         *   res.setHeader('X-Foo', 'bar');
+         *   res.writeHead(200, { 'Content-Type': 'text/plain' });
+         *   res.end('ok');
+         * });
+         * ```
+         *
+         * `Content-Length` is given in bytes, not characters. Use `Buffer.byteLength()` to determine the length of the body in bytes. Node.js
+         * does not check whether `Content-Length` and the length of the body which has
+         * been transmitted are equal or not.
+         *
+         * Attempting to set a header field name or value that contains invalid characters
+         * will result in a `TypeError` being thrown.
+         * @since v0.1.30
+         */
+        writeHead(
+            statusCode: number,
+            statusMessage?: string,
+            headers?: OutgoingHttpHeaders | OutgoingHttpHeader[],
+        ): this;
+        writeHead(statusCode: number, headers?: OutgoingHttpHeaders | OutgoingHttpHeader[]): this;
+        /**
+         * Sends a HTTP/1.1 102 Processing message to the client, indicating that
+         * the request body should be sent.
+         * @since v10.0.0
+         */
+        writeProcessing(): void;
+    }
+    interface InformationEvent {
+        statusCode: number;
+        statusMessage: string;
+        httpVersion: string;
+        httpVersionMajor: number;
+        httpVersionMinor: number;
+        headers: IncomingHttpHeaders;
+        rawHeaders: string[];
+    }
+    /**
+     * This object is created internally and returned from {@link request}. It
+     * represents an _in-progress_ request whose header has already been queued. The
+     * header is still mutable using the `setHeader(name, value)`,`getHeader(name)`, `removeHeader(name)` API. The actual header will
+     * be sent along with the first data chunk or when calling `request.end()`.
+     *
+     * To get the response, add a listener for `'response'` to the request object.`'response'` will be emitted from the request object when the response
+     * headers have been received. The `'response'` event is executed with one
+     * argument which is an instance of {@link IncomingMessage}.
+     *
+     * During the `'response'` event, one can add listeners to the
+     * response object; particularly to listen for the `'data'` event.
+     *
+     * If no `'response'` handler is added, then the response will be
+     * entirely discarded. However, if a `'response'` event handler is added,
+     * then the data from the response object **must** be consumed, either by
+     * calling `response.read()` whenever there is a `'readable'` event, or
+     * by adding a `'data'` handler, or by calling the `.resume()` method.
+     * Until the data is consumed, the `'end'` event will not fire. Also, until
+     * the data is read it will consume memory that can eventually lead to a
+     * 'process out of memory' error.
+     *
+     * For backward compatibility, `res` will only emit `'error'` if there is an`'error'` listener registered.
+     *
+     * Node.js does not check whether Content-Length and the length of the
+     * body which has been transmitted are equal or not.
+     * @since v0.1.17
+     */
+    class ClientRequest extends OutgoingMessage {
+        /**
+         * The `request.aborted` property will be `true` if the request has
+         * been aborted.
+         * @since v0.11.14
+         * @deprecated Since v17.0.0,v16.12.0 - Check `destroyed` instead.
+         */
+        aborted: boolean;
+        /**
+         * The request host.
+         * @since v14.5.0, v12.19.0
+         */
+        host: string;
+        /**
+         * The request protocol.
+         * @since v14.5.0, v12.19.0
+         */
+        protocol: string;
+        /**
+         * When sending request through a keep-alive enabled agent, the underlying socket
+         * might be reused. But if server closes connection at unfortunate time, client
+         * may run into a 'ECONNRESET' error.
+         *
+         * ```js
+         * const http = require('http');
+         *
+         * // Server has a 5 seconds keep-alive timeout by default
+         * http
+         *   .createServer((req, res) => {
+         *     res.write('hello\n');
+         *     res.end();
+         *   })
+         *   .listen(3000);
+         *
+         * setInterval(() => {
+         *   // Adapting a keep-alive agent
+         *   http.get('http://localhost:3000', { agent }, (res) => {
+         *     res.on('data', (data) => {
+         *       // Do nothing
+         *     });
+         *   });
+         * }, 5000); // Sending request on 5s interval so it's easy to hit idle timeout
+         * ```
+         *
+         * By marking a request whether it reused socket or not, we can do
+         * automatic error retry base on it.
+         *
+         * ```js
+         * const http = require('http');
+         * const agent = new http.Agent({ keepAlive: true });
+         *
+         * function retriableRequest() {
+         *   const req = http
+         *     .get('http://localhost:3000', { agent }, (res) => {
+         *       // ...
+         *     })
+         *     .on('error', (err) => {
+         *       // Check if retry is needed
+         *       if (req.reusedSocket &#x26;&#x26; err.code === 'ECONNRESET') {
+         *         retriableRequest();
+         *       }
+         *     });
+         * }
+         *
+         * retriableRequest();
+         * ```
+         * @since v13.0.0, v12.16.0
+         */
+        reusedSocket: boolean;
+        /**
+         * Limits maximum response headers count. If set to 0, no limit will be applied.
+         */
+        maxHeadersCount: number;
+        constructor(url: string | URL | ClientRequestArgs, cb?: (res: IncomingMessage) => void);
+        /**
+         * The request method.
+         * @since v0.1.97
+         */
+        method: string;
+        /**
+         * The request path.
+         * @since v0.4.0
+         */
+        path: string;
+        /**
+         * Marks the request as aborting. Calling this will cause remaining data
+         * in the response to be dropped and the socket to be destroyed.
+         * @since v0.3.8
+         * @deprecated Since v14.1.0,v13.14.0 - Use `destroy` instead.
+         */
+        abort(): void;
+        onSocket(socket: Socket): void;
+        /**
+         * Once a socket is assigned to this request and is connected `socket.setTimeout()` will be called.
+         * @since v0.5.9
+         * @param timeout Milliseconds before a request times out.
+         * @param callback Optional function to be called when a timeout occurs. Same as binding to the `'timeout'` event.
+         */
+        setTimeout(timeout: number, callback?: () => void): this;
+        /**
+         * Once a socket is assigned to this request and is connected `socket.setNoDelay()` will be called.
+         * @since v0.5.9
+         */
+        setNoDelay(noDelay?: boolean): void;
+        /**
+         * Once a socket is assigned to this request and is connected `socket.setKeepAlive()` will be called.
+         * @since v0.5.9
+         */
+        setSocketKeepAlive(enable?: boolean, initialDelay?: number): void;
+        /**
+         * Returns an array containing the unique names of the current outgoing raw
+         * headers. Header names are returned with their exact casing being set.
+         *
+         * ```js
+         * request.setHeader('Foo', 'bar');
+         * request.setHeader('Set-Cookie', ['foo=bar', 'bar=baz']);
+         *
+         * const headerNames = request.getRawHeaderNames();
+         * // headerNames === ['Foo', 'Set-Cookie']
+         * ```
+         * @since v15.13.0, v14.17.0
+         */
+        getRawHeaderNames(): string[];
+        /**
+         * @deprecated
+         */
+        addListener(event: 'abort', listener: () => void): this;
+        addListener(
+            event: 'connect',
+            listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void,
+        ): this;
+        addListener(event: 'continue', listener: () => void): this;
+        addListener(event: 'information', listener: (info: InformationEvent) => void): this;
+        addListener(event: 'response', listener: (response: IncomingMessage) => void): this;
+        addListener(event: 'socket', listener: (socket: Socket) => void): this;
+        addListener(event: 'timeout', listener: () => void): this;
+        addListener(
+            event: 'upgrade',
+            listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void,
+        ): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'drain', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'finish', listener: () => void): this;
+        addListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        addListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        /**
+         * @deprecated
+         */
+        on(event: 'abort', listener: () => void): this;
+        on(event: 'connect', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
+        on(event: 'continue', listener: () => void): this;
+        on(event: 'information', listener: (info: InformationEvent) => void): this;
+        on(event: 'response', listener: (response: IncomingMessage) => void): this;
+        on(event: 'socket', listener: (socket: Socket) => void): this;
+        on(event: 'timeout', listener: () => void): this;
+        on(event: 'upgrade', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'drain', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'finish', listener: () => void): this;
+        on(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        on(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        /**
+         * @deprecated
+         */
+        once(event: 'abort', listener: () => void): this;
+        once(event: 'connect', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
+        once(event: 'continue', listener: () => void): this;
+        once(event: 'information', listener: (info: InformationEvent) => void): this;
+        once(event: 'response', listener: (response: IncomingMessage) => void): this;
+        once(event: 'socket', listener: (socket: Socket) => void): this;
+        once(event: 'timeout', listener: () => void): this;
+        once(event: 'upgrade', listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'drain', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'finish', listener: () => void): this;
+        once(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        once(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        /**
+         * @deprecated
+         */
+        prependListener(event: 'abort', listener: () => void): this;
+        prependListener(
+            event: 'connect',
+            listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void,
+        ): this;
+        prependListener(event: 'continue', listener: () => void): this;
+        prependListener(event: 'information', listener: (info: InformationEvent) => void): this;
+        prependListener(event: 'response', listener: (response: IncomingMessage) => void): this;
+        prependListener(event: 'socket', listener: (socket: Socket) => void): this;
+        prependListener(event: 'timeout', listener: () => void): this;
+        prependListener(
+            event: 'upgrade',
+            listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void,
+        ): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'drain', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'finish', listener: () => void): this;
+        prependListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        prependListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        /**
+         * @deprecated
+         */
+        prependOnceListener(event: 'abort', listener: () => void): this;
+        prependOnceListener(
+            event: 'connect',
+            listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void,
+        ): this;
+        prependOnceListener(event: 'continue', listener: () => void): this;
+        prependOnceListener(event: 'information', listener: (info: InformationEvent) => void): this;
+        prependOnceListener(event: 'response', listener: (response: IncomingMessage) => void): this;
+        prependOnceListener(event: 'socket', listener: (socket: Socket) => void): this;
+        prependOnceListener(event: 'timeout', listener: () => void): this;
+        prependOnceListener(
+            event: 'upgrade',
+            listener: (response: IncomingMessage, socket: Socket, head: Buffer) => void,
+        ): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'drain', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'finish', listener: () => void): this;
+        prependOnceListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        prependOnceListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    /**
+     * An `IncomingMessage` object is created by {@link Server} or {@link ClientRequest} and passed as the first argument to the `'request'` and `'response'` event respectively. It may be used to
+     * access response
+     * status, headers and data.
+     *
+     * Different from its `socket` value which is a subclass of `stream.Duplex`, the`IncomingMessage` itself extends `stream.Readable` and is created separately to
+     * parse and emit the incoming HTTP headers and payload, as the underlying socket
+     * may be reused multiple times in case of keep-alive.
+     * @since v0.1.17
+     */
+    class IncomingMessage extends stream.Readable {
+        constructor(socket: Socket);
+        /**
+         * The `message.aborted` property will be `true` if the request has
+         * been aborted.
+         * @since v10.1.0
+         * @deprecated Since v17.0.0,v16.12.0 - Check `message.destroyed` from <a href="stream.html#class-streamreadable" class="type">stream.Readable</a>.
+         */
+        aborted: boolean;
+        /**
+         * In case of server request, the HTTP version sent by the client. In the case of
+         * client response, the HTTP version of the connected-to server.
+         * Probably either `'1.1'` or `'1.0'`.
+         *
+         * Also `message.httpVersionMajor` is the first integer and`message.httpVersionMinor` is the second.
+         * @since v0.1.1
+         */
+        httpVersion: string;
+        httpVersionMajor: number;
+        httpVersionMinor: number;
+        /**
+         * The `message.complete` property will be `true` if a complete HTTP message has
+         * been received and successfully parsed.
+         *
+         * This property is particularly useful as a means of determining if a client or
+         * server fully transmitted a message before a connection was terminated:
+         *
+         * ```js
+         * const req = http.request({
+         *   host: '127.0.0.1',
+         *   port: 8080,
+         *   method: 'POST'
+         * }, (res) => {
+         *   res.resume();
+         *   res.on('end', () => {
+         *     if (!res.complete)
+         *       console.error(
+         *         'The connection was terminated while the message was still being sent');
+         *   });
+         * });
+         * ```
+         * @since v0.3.0
+         */
+        complete: boolean;
+        /**
+         * Alias for `message.socket`.
+         * @since v0.1.90
+         * @deprecated Since v16.0.0 - Use `socket`.
+         */
+        connection: Socket;
+        /**
+         * The `net.Socket` object associated with the connection.
+         *
+         * With HTTPS support, use `request.socket.getPeerCertificate()` to obtain the
+         * client's authentication details.
+         *
+         * This property is guaranteed to be an instance of the `net.Socket` class,
+         * a subclass of `stream.Duplex`, unless the user specified a socket
+         * type other than `net.Socket` or internally nulled.
+         * @since v0.3.0
+         */
+        socket: Socket;
+        /**
+         * The request/response headers object.
+         *
+         * Key-value pairs of header names and values. Header names are lower-cased.
+         *
+         * ```js
+         * // Prints something like:
+         * //
+         * // { 'user-agent': 'curl/7.22.0',
+         * //   host: '127.0.0.1:8000',
+         * //   accept: '*' }
+         * console.log(request.getHeaders());
+         * ```
+         *
+         * Duplicates in raw headers are handled in the following ways, depending on the
+         * header name:
+         *
+         * * Duplicates of `age`, `authorization`, `content-length`, `content-type`,`etag`, `expires`, `from`, `host`, `if-modified-since`, `if-unmodified-since`,`last-modified`, `location`,
+         * `max-forwards`, `proxy-authorization`, `referer`,`retry-after`, `server`, or `user-agent` are discarded.
+         * * `set-cookie` is always an array. Duplicates are added to the array.
+         * * For duplicate `cookie` headers, the values are joined together with '; '.
+         * * For all other headers, the values are joined together with ', '.
+         * @since v0.1.5
+         */
+        headers: IncomingHttpHeaders;
+        /**
+         * The raw request/response headers list exactly as they were received.
+         *
+         * The keys and values are in the same list. It is _not_ a
+         * list of tuples. So, the even-numbered offsets are key values, and the
+         * odd-numbered offsets are the associated values.
+         *
+         * Header names are not lowercased, and duplicates are not merged.
+         *
+         * ```js
+         * // Prints something like:
+         * //
+         * // [ 'user-agent',
+         * //   'this is invalid because there can be only one',
+         * //   'User-Agent',
+         * //   'curl/7.22.0',
+         * //   'Host',
+         * //   '127.0.0.1:8000',
+         * //   'ACCEPT',
+         * //   '*' ]
+         * console.log(request.rawHeaders);
+         * ```
+         * @since v0.11.6
+         */
+        rawHeaders: string[];
+        /**
+         * The request/response trailers object. Only populated at the `'end'` event.
+         * @since v0.3.0
+         */
+        trailers: NodeJS.Dict<string>;
+        /**
+         * The raw request/response trailer keys and values exactly as they were
+         * received. Only populated at the `'end'` event.
+         * @since v0.11.6
+         */
+        rawTrailers: string[];
+        /**
+         * Calls `message.socket.setTimeout(msecs, callback)`.
+         * @since v0.5.9
+         */
+        setTimeout(msecs: number, callback?: () => void): this;
+        /**
+         * **Only valid for request obtained from {@link Server}.**
+         *
+         * The request method as a string. Read only. Examples: `'GET'`, `'DELETE'`.
+         * @since v0.1.1
+         */
+        method?: string | undefined;
+        /**
+         * **Only valid for request obtained from {@link Server}.**
+         *
+         * Request URL string. This contains only the URL that is present in the actual
+         * HTTP request. Take the following request:
+         *
+         * ```http
+         * GET /status?name=ryan HTTP/1.1
+         * Accept: text/plain
+         * ```
+         *
+         * To parse the URL into its parts:
+         *
+         * ```js
+         * new URL(request.url, `http://${request.getHeaders().host}`);
+         * ```
+         *
+         * When `request.url` is `'/status?name=ryan'` and`request.getHeaders().host` is `'localhost:3000'`:
+         *
+         * ```console
+         * $ node
+         * > new URL(request.url, `http://${request.getHeaders().host}`)
+         * URL {
+         *   href: 'http://localhost:3000/status?name=ryan',
+         *   origin: 'http://localhost:3000',
+         *   protocol: 'http:',
+         *   username: '',
+         *   password: '',
+         *   host: 'localhost:3000',
+         *   hostname: 'localhost',
+         *   port: '3000',
+         *   pathname: '/status',
+         *   search: '?name=ryan',
+         *   searchParams: URLSearchParams { 'name' => 'ryan' },
+         *   hash: ''
+         * }
+         * ```
+         * @since v0.1.90
+         */
+        url?: string | undefined;
+        /**
+         * **Only valid for response obtained from {@link ClientRequest}.**
+         *
+         * The 3-digit HTTP response status code. E.G. `404`.
+         * @since v0.1.1
+         */
+        statusCode?: number | undefined;
+        /**
+         * **Only valid for response obtained from {@link ClientRequest}.**
+         *
+         * The HTTP response status message (reason phrase). E.G. `OK` or `Internal Server Error`.
+         * @since v0.11.10
+         */
+        statusMessage?: string | undefined;
+        /**
+         * Calls `destroy()` on the socket that received the `IncomingMessage`. If `error`is provided, an `'error'` event is emitted on the socket and `error` is passed
+         * as an argument to any listeners on the event.
+         * @since v0.3.0
+         */
+        destroy(error?: Error): this;
+    }
+    interface AgentOptions extends Partial<TcpSocketConnectOpts> {
+        /**
+         * Keep sockets around in a pool to be used by other requests in the future. Default = false
+         */
+        keepAlive?: boolean | undefined;
+        /**
+         * When using HTTP KeepAlive, how often to send TCP KeepAlive packets over sockets being kept alive. Default = 1000.
+         * Only relevant if keepAlive is set to true.
+         */
+        keepAliveMsecs?: number | undefined;
+        /**
+         * Maximum number of sockets to allow per host. Default for Node 0.10 is 5, default for Node 0.12 is Infinity
+         */
+        maxSockets?: number | undefined;
+        /**
+         * Maximum number of sockets allowed for all hosts in total. Each request will use a new socket until the maximum is reached. Default: Infinity.
+         */
+        maxTotalSockets?: number | undefined;
+        /**
+         * Maximum number of sockets to leave open in a free state. Only relevant if keepAlive is set to true. Default = 256.
+         */
+        maxFreeSockets?: number | undefined;
+        /**
+         * Socket timeout in milliseconds. This will set the timeout after the socket is connected.
+         */
+        timeout?: number | undefined;
+        /**
+         * Scheduling strategy to apply when picking the next free socket to use.
+         * @default `lifo`
+         */
+        scheduling?: 'fifo' | 'lifo' | undefined;
+    }
+    /**
+     * An `Agent` is responsible for managing connection persistence
+     * and reuse for HTTP clients. It maintains a queue of pending requests
+     * for a given host and port, reusing a single socket connection for each
+     * until the queue is empty, at which time the socket is either destroyed
+     * or put into a pool where it is kept to be used again for requests to the
+     * same host and port. Whether it is destroyed or pooled depends on the`keepAlive` `option`.
+     *
+     * Pooled connections have TCP Keep-Alive enabled for them, but servers may
+     * still close idle connections, in which case they will be removed from the
+     * pool and a new connection will be made when a new HTTP request is made for
+     * that host and port. Servers may also refuse to allow multiple requests
+     * over the same connection, in which case the connection will have to be
+     * remade for every request and cannot be pooled. The `Agent` will still make
+     * the requests to that server, but each one will occur over a new connection.
+     *
+     * When a connection is closed by the client or the server, it is removed
+     * from the pool. Any unused sockets in the pool will be unrefed so as not
+     * to keep the Node.js process running when there are no outstanding requests.
+     * (see `socket.unref()`).
+     *
+     * It is good practice, to `destroy()` an `Agent` instance when it is no
+     * longer in use, because unused sockets consume OS resources.
+     *
+     * Sockets are removed from an agent when the socket emits either
+     * a `'close'` event or an `'agentRemove'` event. When intending to keep one
+     * HTTP request open for a long time without keeping it in the agent, something
+     * like the following may be done:
+     *
+     * ```js
+     * http.get(options, (res) => {
+     *   // Do stuff
+     * }).on('socket', (socket) => {
+     *   socket.emit('agentRemove');
+     * });
+     * ```
+     *
+     * An agent may also be used for an individual request. By providing`{agent: false}` as an option to the `http.get()` or `http.request()`functions, a one-time use `Agent` with default options
+     * will be used
+     * for the client connection.
+     *
+     * `agent:false`:
+     *
+     * ```js
+     * http.get({
+     *   hostname: 'localhost',
+     *   port: 80,
+     *   path: '/',
+     *   agent: false  // Create a new agent just for this one request
+     * }, (res) => {
+     *   // Do stuff with response
+     * });
+     * ```
+     * @since v0.3.4
+     */
+    class Agent {
+        /**
+         * By default set to 256\. For agents with `keepAlive` enabled, this
+         * sets the maximum number of sockets that will be left open in the free
+         * state.
+         * @since v0.11.7
+         */
+        maxFreeSockets: number;
+        /**
+         * By default set to `Infinity`. Determines how many concurrent sockets the agent
+         * can have open per origin. Origin is the returned value of `agent.getName()`.
+         * @since v0.3.6
+         */
+        maxSockets: number;
+        /**
+         * By default set to `Infinity`. Determines how many concurrent sockets the agent
+         * can have open. Unlike `maxSockets`, this parameter applies across all origins.
+         * @since v14.5.0, v12.19.0
+         */
+        maxTotalSockets: number;
+        /**
+         * An object which contains arrays of sockets currently awaiting use by
+         * the agent when `keepAlive` is enabled. Do not modify.
+         *
+         * Sockets in the `freeSockets` list will be automatically destroyed and
+         * removed from the array on `'timeout'`.
+         * @since v0.11.4
+         */
+        readonly freeSockets: NodeJS.ReadOnlyDict<Socket[]>;
+        /**
+         * An object which contains arrays of sockets currently in use by the
+         * agent. Do not modify.
+         * @since v0.3.6
+         */
+        readonly sockets: NodeJS.ReadOnlyDict<Socket[]>;
+        /**
+         * An object which contains queues of requests that have not yet been assigned to
+         * sockets. Do not modify.
+         * @since v0.5.9
+         */
+        readonly requests: NodeJS.ReadOnlyDict<IncomingMessage[]>;
+        constructor(opts?: AgentOptions);
+        /**
+         * Destroy any sockets that are currently in use by the agent.
+         *
+         * It is usually not necessary to do this. However, if using an
+         * agent with `keepAlive` enabled, then it is best to explicitly shut down
+         * the agent when it is no longer needed. Otherwise,
+         * sockets might stay open for quite a long time before the server
+         * terminates them.
+         * @since v0.11.4
+         */
+        destroy(): void;
+    }
+    const METHODS: string[];
+    const STATUS_CODES: {
+        [errorCode: number]: string | undefined;
+        [errorCode: string]: string | undefined;
+    };
+    /**
+     * Returns a new instance of {@link Server}.
+     *
+     * The `requestListener` is a function which is automatically
+     * added to the `'request'` event.
+     * @since v0.1.13
+     */
+    function createServer<
+        Request extends typeof IncomingMessage = typeof IncomingMessage,
+        Response extends typeof ServerResponse = typeof ServerResponse,
+    >(requestListener?: RequestListener<Request, Response>): Server<Request, Response>;
+    function createServer<
+        Request extends typeof IncomingMessage = typeof IncomingMessage,
+        Response extends typeof ServerResponse = typeof ServerResponse,
+    >(
+        options: ServerOptions<Request, Response>,
+        requestListener?: RequestListener<Request, Response>,
+    ): Server<Request, Response>;
+    // although RequestOptions are passed as ClientRequestArgs to ClientRequest directly,
+    // create interface RequestOptions would make the naming more clear to developers
+    interface RequestOptions extends ClientRequestArgs {}
+    /**
+     * `options` in `socket.connect()` are also supported.
+     *
+     * Node.js maintains several connections per server to make HTTP requests.
+     * This function allows one to transparently issue requests.
+     *
+     * `url` can be a string or a `URL` object. If `url` is a
+     * string, it is automatically parsed with `new URL()`. If it is a `URL` object, it will be automatically converted to an ordinary `options` object.
+     *
+     * If both `url` and `options` are specified, the objects are merged, with the`options` properties taking precedence.
+     *
+     * The optional `callback` parameter will be added as a one-time listener for
+     * the `'response'` event.
+     *
+     * `http.request()` returns an instance of the {@link ClientRequest} class. The `ClientRequest` instance is a writable stream. If one needs to
+     * upload a file with a POST request, then write to the `ClientRequest` object.
+     *
+     * ```js
+     * const http = require('http');
+     *
+     * const postData = JSON.stringify({
+     *   'msg': 'Hello World!'
+     * });
+     *
+     * const options = {
+     *   hostname: 'www.google.com',
+     *   port: 80,
+     *   path: '/upload',
+     *   method: 'POST',
+     *   headers: {
+     *     'Content-Type': 'application/json',
+     *     'Content-Length': Buffer.byteLength(postData)
+     *   }
+     * };
+     *
+     * const req = http.request(options, (res) => {
+     *   console.log(`STATUS: ${res.statusCode}`);
+     *   console.log(`HEADERS: ${JSON.stringify(res.headers)}`);
+     *   res.setEncoding('utf8');
+     *   res.on('data', (chunk) => {
+     *     console.log(`BODY: ${chunk}`);
+     *   });
+     *   res.on('end', () => {
+     *     console.log('No more data in response.');
+     *   });
+     * });
+     *
+     * req.on('error', (e) => {
+     *   console.error(`problem with request: ${e.message}`);
+     * });
+     *
+     * // Write data to request body
+     * req.write(postData);
+     * req.end();
+     * ```
+     *
+     * In the example `req.end()` was called. With `http.request()` one
+     * must always call `req.end()` to signify the end of the request -
+     * even if there is no data being written to the request body.
+     *
+     * If any error is encountered during the request (be that with DNS resolution,
+     * TCP level errors, or actual HTTP parse errors) an `'error'` event is emitted
+     * on the returned request object. As with all `'error'` events, if no listeners
+     * are registered the error will be thrown.
+     *
+     * There are a few special headers that should be noted.
+     *
+     * * Sending a 'Connection: keep-alive' will notify Node.js that the connection to
+     * the server should be persisted until the next request.
+     * * Sending a 'Content-Length' header will disable the default chunked encoding.
+     * * Sending an 'Expect' header will immediately send the request headers.
+     * Usually, when sending 'Expect: 100-continue', both a timeout and a listener
+     * for the `'continue'` event should be set. See RFC 2616 Section 8.2.3 for more
+     * information.
+     * * Sending an Authorization header will override using the `auth` option
+     * to compute basic authentication.
+     *
+     * Example using a `URL` as `options`:
+     *
+     * ```js
+     * const options = new URL('http://abc:xyz@example.com');
+     *
+     * const req = http.request(options, (res) => {
+     *   // ...
+     * });
+     * ```
+     *
+     * In a successful request, the following events will be emitted in the following
+     * order:
+     *
+     * * `'socket'`
+     * * `'response'`
+     *    * `'data'` any number of times, on the `res` object
+     *    (`'data'` will not be emitted at all if the response body is empty, for
+     *    instance, in most redirects)
+     *    * `'end'` on the `res` object
+     * * `'close'`
+     *
+     * In the case of a connection error, the following events will be emitted:
+     *
+     * * `'socket'`
+     * * `'error'`
+     * * `'close'`
+     *
+     * In the case of a premature connection close before the response is received,
+     * the following events will be emitted in the following order:
+     *
+     * * `'socket'`
+     * * `'error'` with an error with message `'Error: socket hang up'` and code`'ECONNRESET'`
+     * * `'close'`
+     *
+     * In the case of a premature connection close after the response is received,
+     * the following events will be emitted in the following order:
+     *
+     * * `'socket'`
+     * * `'response'`
+     *    * `'data'` any number of times, on the `res` object
+     * * (connection closed here)
+     * * `'aborted'` on the `res` object
+     * * `'error'` on the `res` object with an error with message`'Error: aborted'` and code `'ECONNRESET'`.
+     * * `'close'`
+     * * `'close'` on the `res` object
+     *
+     * If `req.destroy()` is called before a socket is assigned, the following
+     * events will be emitted in the following order:
+     *
+     * * (`req.destroy()` called here)
+     * * `'error'` with an error with message `'Error: socket hang up'` and code`'ECONNRESET'`
+     * * `'close'`
+     *
+     * If `req.destroy()` is called before the connection succeeds, the following
+     * events will be emitted in the following order:
+     *
+     * * `'socket'`
+     * * (`req.destroy()` called here)
+     * * `'error'` with an error with message `'Error: socket hang up'` and code`'ECONNRESET'`
+     * * `'close'`
+     *
+     * If `req.destroy()` is called after the response is received, the following
+     * events will be emitted in the following order:
+     *
+     * * `'socket'`
+     * * `'response'`
+     *    * `'data'` any number of times, on the `res` object
+     * * (`req.destroy()` called here)
+     * * `'aborted'` on the `res` object
+     * * `'error'` on the `res` object with an error with message`'Error: aborted'` and code `'ECONNRESET'`.
+     * * `'close'`
+     * * `'close'` on the `res` object
+     *
+     * If `req.abort()` is called before a socket is assigned, the following
+     * events will be emitted in the following order:
+     *
+     * * (`req.abort()` called here)
+     * * `'abort'`
+     * * `'close'`
+     *
+     * If `req.abort()` is called before the connection succeeds, the following
+     * events will be emitted in the following order:
+     *
+     * * `'socket'`
+     * * (`req.abort()` called here)
+     * * `'abort'`
+     * * `'error'` with an error with message `'Error: socket hang up'` and code`'ECONNRESET'`
+     * * `'close'`
+     *
+     * If `req.abort()` is called after the response is received, the following
+     * events will be emitted in the following order:
+     *
+     * * `'socket'`
+     * * `'response'`
+     *    * `'data'` any number of times, on the `res` object
+     * * (`req.abort()` called here)
+     * * `'abort'`
+     * * `'aborted'` on the `res` object
+     * * `'error'` on the `res` object with an error with message`'Error: aborted'` and code `'ECONNRESET'`.
+     * * `'close'`
+     * * `'close'` on the `res` object
+     *
+     * Setting the `timeout` option or using the `setTimeout()` function will
+     * not abort the request or do anything besides add a `'timeout'` event.
+     *
+     * Passing an `AbortSignal` and then calling `abort` on the corresponding`AbortController` will behave the same way as calling `.destroy()` on the
+     * request itself.
+     * @since v0.3.6
+     */
+    function request(options: RequestOptions | string | URL, callback?: (res: IncomingMessage) => void): ClientRequest;
+    function request(
+        url: string | URL,
+        options: RequestOptions,
+        callback?: (res: IncomingMessage) => void,
+    ): ClientRequest;
+    /**
+     * Since most requests are GET requests without bodies, Node.js provides this
+     * convenience method. The only difference between this method and {@link request} is that it sets the method to GET and calls `req.end()`automatically. The callback must take care to consume the
+     * response
+     * data for reasons stated in {@link ClientRequest} section.
+     *
+     * The `callback` is invoked with a single argument that is an instance of {@link IncomingMessage}.
+     *
+     * JSON fetching example:
+     *
+     * ```js
+     * http.get('http://localhost:8000/', (res) => {
+     *   const { statusCode } = res;
+     *   const contentType = res.headers['content-type'];
+     *
+     *   let error;
+     *   // Any 2xx status code signals a successful response but
+     *   // here we're only checking for 200.
+     *   if (statusCode !== 200) {
+     *     error = new Error('Request Failed.\n' +
+     *                       `Status Code: ${statusCode}`);
+     *   } else if (!/^application\/json/.test(contentType)) {
+     *     error = new Error('Invalid content-type.\n' +
+     *                       `Expected application/json but received ${contentType}`);
+     *   }
+     *   if (error) {
+     *     console.error(error.message);
+     *     // Consume response data to free up memory
+     *     res.resume();
+     *     return;
+     *   }
+     *
+     *   res.setEncoding('utf8');
+     *   let rawData = '';
+     *   res.on('data', (chunk) => { rawData += chunk; });
+     *   res.on('end', () => {
+     *     try {
+     *       const parsedData = JSON.parse(rawData);
+     *       console.log(parsedData);
+     *     } catch (e) {
+     *       console.error(e.message);
+     *     }
+     *   });
+     * }).on('error', (e) => {
+     *   console.error(`Got error: ${e.message}`);
+     * });
+     *
+     * // Create a local server to receive data from
+     * const server = http.createServer((req, res) => {
+     *   res.writeHead(200, { 'Content-Type': 'application/json' });
+     *   res.end(JSON.stringify({
+     *     data: 'Hello World!'
+     *   }));
+     * });
+     *
+     * server.listen(8000);
+     * ```
+     * @since v0.3.6
+     * @param options Accepts the same `options` as {@link request}, with the `method` always set to `GET`. Properties that are inherited from the prototype are ignored.
+     */
+    function get(options: RequestOptions | string | URL, callback?: (res: IncomingMessage) => void): ClientRequest;
+    function get(url: string | URL, options: RequestOptions, callback?: (res: IncomingMessage) => void): ClientRequest;
+    let globalAgent: Agent;
+    /**
+     * Read-only property specifying the maximum allowed size of HTTP headers in bytes.
+     * Defaults to 16KB. Configurable using the `--max-http-header-size` CLI option.
+     */
+    const maxHeaderSize: number;
+}
+declare module 'node:http' {
+    export * from 'http';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/http2.d.ts b/igv_component/node_modules/@types/node/ts4.8/http2.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..0f628b9d775d89cc3fa4b5911bbffc8634c3d250
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/http2.d.ts
@@ -0,0 +1,2106 @@
+/**
+ * The `http2` module provides an implementation of the [HTTP/2](https://tools.ietf.org/html/rfc7540) protocol. It
+ * can be accessed using:
+ *
+ * ```js
+ * const http2 = require('http2');
+ * ```
+ * @since v8.4.0
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/http2.js)
+ */
+declare module 'http2' {
+    import EventEmitter = require('node:events');
+    import * as fs from 'node:fs';
+    import * as net from 'node:net';
+    import * as stream from 'node:stream';
+    import * as tls from 'node:tls';
+    import * as url from 'node:url';
+    import { IncomingHttpHeaders as Http1IncomingHttpHeaders, OutgoingHttpHeaders, IncomingMessage, ServerResponse } from 'node:http';
+    export { OutgoingHttpHeaders } from 'node:http';
+    export interface IncomingHttpStatusHeader {
+        ':status'?: number | undefined;
+    }
+    export interface IncomingHttpHeaders extends Http1IncomingHttpHeaders {
+        ':path'?: string | undefined;
+        ':method'?: string | undefined;
+        ':authority'?: string | undefined;
+        ':scheme'?: string | undefined;
+    }
+    // Http2Stream
+    export interface StreamPriorityOptions {
+        exclusive?: boolean | undefined;
+        parent?: number | undefined;
+        weight?: number | undefined;
+        silent?: boolean | undefined;
+    }
+    export interface StreamState {
+        localWindowSize?: number | undefined;
+        state?: number | undefined;
+        localClose?: number | undefined;
+        remoteClose?: number | undefined;
+        sumDependencyWeight?: number | undefined;
+        weight?: number | undefined;
+    }
+    export interface ServerStreamResponseOptions {
+        endStream?: boolean | undefined;
+        waitForTrailers?: boolean | undefined;
+    }
+    export interface StatOptions {
+        offset: number;
+        length: number;
+    }
+    export interface ServerStreamFileResponseOptions {
+        statCheck?(stats: fs.Stats, headers: OutgoingHttpHeaders, statOptions: StatOptions): void | boolean;
+        waitForTrailers?: boolean | undefined;
+        offset?: number | undefined;
+        length?: number | undefined;
+    }
+    export interface ServerStreamFileResponseOptionsWithError extends ServerStreamFileResponseOptions {
+        onError?(err: NodeJS.ErrnoException): void;
+    }
+    export interface Http2Stream extends stream.Duplex {
+        /**
+         * Set to `true` if the `Http2Stream` instance was aborted abnormally. When set,
+         * the `'aborted'` event will have been emitted.
+         * @since v8.4.0
+         */
+        readonly aborted: boolean;
+        /**
+         * This property shows the number of characters currently buffered to be written.
+         * See `net.Socket.bufferSize` for details.
+         * @since v11.2.0, v10.16.0
+         */
+        readonly bufferSize: number;
+        /**
+         * Set to `true` if the `Http2Stream` instance has been closed.
+         * @since v9.4.0
+         */
+        readonly closed: boolean;
+        /**
+         * Set to `true` if the `Http2Stream` instance has been destroyed and is no longer
+         * usable.
+         * @since v8.4.0
+         */
+        readonly destroyed: boolean;
+        /**
+         * Set to `true` if the `END_STREAM` flag was set in the request or response
+         * HEADERS frame received, indicating that no additional data should be received
+         * and the readable side of the `Http2Stream` will be closed.
+         * @since v10.11.0
+         */
+        readonly endAfterHeaders: boolean;
+        /**
+         * The numeric stream identifier of this `Http2Stream` instance. Set to `undefined`if the stream identifier has not yet been assigned.
+         * @since v8.4.0
+         */
+        readonly id?: number | undefined;
+        /**
+         * Set to `true` if the `Http2Stream` instance has not yet been assigned a
+         * numeric stream identifier.
+         * @since v9.4.0
+         */
+        readonly pending: boolean;
+        /**
+         * Set to the `RST_STREAM` `error code` reported when the `Http2Stream` is
+         * destroyed after either receiving an `RST_STREAM` frame from the connected peer,
+         * calling `http2stream.close()`, or `http2stream.destroy()`. Will be`undefined` if the `Http2Stream` has not been closed.
+         * @since v8.4.0
+         */
+        readonly rstCode: number;
+        /**
+         * An object containing the outbound headers sent for this `Http2Stream`.
+         * @since v9.5.0
+         */
+        readonly sentHeaders: OutgoingHttpHeaders;
+        /**
+         * An array of objects containing the outbound informational (additional) headers
+         * sent for this `Http2Stream`.
+         * @since v9.5.0
+         */
+        readonly sentInfoHeaders?: OutgoingHttpHeaders[] | undefined;
+        /**
+         * An object containing the outbound trailers sent for this `HttpStream`.
+         * @since v9.5.0
+         */
+        readonly sentTrailers?: OutgoingHttpHeaders | undefined;
+        /**
+         * A reference to the `Http2Session` instance that owns this `Http2Stream`. The
+         * value will be `undefined` after the `Http2Stream` instance is destroyed.
+         * @since v8.4.0
+         */
+        readonly session: Http2Session;
+        /**
+         * Provides miscellaneous information about the current state of the`Http2Stream`.
+         *
+         * A current state of this `Http2Stream`.
+         * @since v8.4.0
+         */
+        readonly state: StreamState;
+        /**
+         * Closes the `Http2Stream` instance by sending an `RST_STREAM` frame to the
+         * connected HTTP/2 peer.
+         * @since v8.4.0
+         * @param [code=http2.constants.NGHTTP2_NO_ERROR] Unsigned 32-bit integer identifying the error code.
+         * @param callback An optional function registered to listen for the `'close'` event.
+         */
+        close(code?: number, callback?: () => void): void;
+        /**
+         * Updates the priority for this `Http2Stream` instance.
+         * @since v8.4.0
+         */
+        priority(options: StreamPriorityOptions): void;
+        /**
+         * ```js
+         * const http2 = require('http2');
+         * const client = http2.connect('http://example.org:8000');
+         * const { NGHTTP2_CANCEL } = http2.constants;
+         * const req = client.request({ ':path': '/' });
+         *
+         * // Cancel the stream if there's no activity after 5 seconds
+         * req.setTimeout(5000, () => req.close(NGHTTP2_CANCEL));
+         * ```
+         * @since v8.4.0
+         */
+        setTimeout(msecs: number, callback?: () => void): void;
+        /**
+         * Sends a trailing `HEADERS` frame to the connected HTTP/2 peer. This method
+         * will cause the `Http2Stream` to be immediately closed and must only be
+         * called after the `'wantTrailers'` event has been emitted. When sending a
+         * request or sending a response, the `options.waitForTrailers` option must be set
+         * in order to keep the `Http2Stream` open after the final `DATA` frame so that
+         * trailers can be sent.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   stream.respond(undefined, { waitForTrailers: true });
+         *   stream.on('wantTrailers', () => {
+         *     stream.sendTrailers({ xyz: 'abc' });
+         *   });
+         *   stream.end('Hello World');
+         * });
+         * ```
+         *
+         * The HTTP/1 specification forbids trailers from containing HTTP/2 pseudo-header
+         * fields (e.g. `':method'`, `':path'`, etc).
+         * @since v10.0.0
+         */
+        sendTrailers(headers: OutgoingHttpHeaders): void;
+        addListener(event: 'aborted', listener: () => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        addListener(event: 'drain', listener: () => void): this;
+        addListener(event: 'end', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'finish', listener: () => void): this;
+        addListener(event: 'frameError', listener: (frameType: number, errorCode: number) => void): this;
+        addListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        addListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        addListener(event: 'streamClosed', listener: (code: number) => void): this;
+        addListener(event: 'timeout', listener: () => void): this;
+        addListener(event: 'trailers', listener: (trailers: IncomingHttpHeaders, flags: number) => void): this;
+        addListener(event: 'wantTrailers', listener: () => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'aborted'): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'data', chunk: Buffer | string): boolean;
+        emit(event: 'drain'): boolean;
+        emit(event: 'end'): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'finish'): boolean;
+        emit(event: 'frameError', frameType: number, errorCode: number): boolean;
+        emit(event: 'pipe', src: stream.Readable): boolean;
+        emit(event: 'unpipe', src: stream.Readable): boolean;
+        emit(event: 'streamClosed', code: number): boolean;
+        emit(event: 'timeout'): boolean;
+        emit(event: 'trailers', trailers: IncomingHttpHeaders, flags: number): boolean;
+        emit(event: 'wantTrailers'): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'aborted', listener: () => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        on(event: 'drain', listener: () => void): this;
+        on(event: 'end', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'finish', listener: () => void): this;
+        on(event: 'frameError', listener: (frameType: number, errorCode: number) => void): this;
+        on(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        on(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        on(event: 'streamClosed', listener: (code: number) => void): this;
+        on(event: 'timeout', listener: () => void): this;
+        on(event: 'trailers', listener: (trailers: IncomingHttpHeaders, flags: number) => void): this;
+        on(event: 'wantTrailers', listener: () => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'aborted', listener: () => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        once(event: 'drain', listener: () => void): this;
+        once(event: 'end', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'finish', listener: () => void): this;
+        once(event: 'frameError', listener: (frameType: number, errorCode: number) => void): this;
+        once(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        once(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        once(event: 'streamClosed', listener: (code: number) => void): this;
+        once(event: 'timeout', listener: () => void): this;
+        once(event: 'trailers', listener: (trailers: IncomingHttpHeaders, flags: number) => void): this;
+        once(event: 'wantTrailers', listener: () => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'aborted', listener: () => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        prependListener(event: 'drain', listener: () => void): this;
+        prependListener(event: 'end', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'finish', listener: () => void): this;
+        prependListener(event: 'frameError', listener: (frameType: number, errorCode: number) => void): this;
+        prependListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        prependListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        prependListener(event: 'streamClosed', listener: (code: number) => void): this;
+        prependListener(event: 'timeout', listener: () => void): this;
+        prependListener(event: 'trailers', listener: (trailers: IncomingHttpHeaders, flags: number) => void): this;
+        prependListener(event: 'wantTrailers', listener: () => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'aborted', listener: () => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        prependOnceListener(event: 'drain', listener: () => void): this;
+        prependOnceListener(event: 'end', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'finish', listener: () => void): this;
+        prependOnceListener(event: 'frameError', listener: (frameType: number, errorCode: number) => void): this;
+        prependOnceListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        prependOnceListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        prependOnceListener(event: 'streamClosed', listener: (code: number) => void): this;
+        prependOnceListener(event: 'timeout', listener: () => void): this;
+        prependOnceListener(event: 'trailers', listener: (trailers: IncomingHttpHeaders, flags: number) => void): this;
+        prependOnceListener(event: 'wantTrailers', listener: () => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    export interface ClientHttp2Stream extends Http2Stream {
+        addListener(event: 'continue', listener: () => {}): this;
+        addListener(event: 'headers', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        addListener(event: 'push', listener: (headers: IncomingHttpHeaders, flags: number) => void): this;
+        addListener(event: 'response', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'continue'): boolean;
+        emit(event: 'headers', headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number): boolean;
+        emit(event: 'push', headers: IncomingHttpHeaders, flags: number): boolean;
+        emit(event: 'response', headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'continue', listener: () => {}): this;
+        on(event: 'headers', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        on(event: 'push', listener: (headers: IncomingHttpHeaders, flags: number) => void): this;
+        on(event: 'response', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'continue', listener: () => {}): this;
+        once(event: 'headers', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        once(event: 'push', listener: (headers: IncomingHttpHeaders, flags: number) => void): this;
+        once(event: 'response', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'continue', listener: () => {}): this;
+        prependListener(event: 'headers', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        prependListener(event: 'push', listener: (headers: IncomingHttpHeaders, flags: number) => void): this;
+        prependListener(event: 'response', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'continue', listener: () => {}): this;
+        prependOnceListener(event: 'headers', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        prependOnceListener(event: 'push', listener: (headers: IncomingHttpHeaders, flags: number) => void): this;
+        prependOnceListener(event: 'response', listener: (headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    export interface ServerHttp2Stream extends Http2Stream {
+        /**
+         * True if headers were sent, false otherwise (read-only).
+         * @since v8.4.0
+         */
+        readonly headersSent: boolean;
+        /**
+         * Read-only property mapped to the `SETTINGS_ENABLE_PUSH` flag of the remote
+         * client's most recent `SETTINGS` frame. Will be `true` if the remote peer
+         * accepts push streams, `false` otherwise. Settings are the same for every`Http2Stream` in the same `Http2Session`.
+         * @since v8.4.0
+         */
+        readonly pushAllowed: boolean;
+        /**
+         * Sends an additional informational `HEADERS` frame to the connected HTTP/2 peer.
+         * @since v8.4.0
+         */
+        additionalHeaders(headers: OutgoingHttpHeaders): void;
+        /**
+         * Initiates a push stream. The callback is invoked with the new `Http2Stream`instance created for the push stream passed as the second argument, or an`Error` passed as the first argument.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   stream.respond({ ':status': 200 });
+         *   stream.pushStream({ ':path': '/' }, (err, pushStream, headers) => {
+         *     if (err) throw err;
+         *     pushStream.respond({ ':status': 200 });
+         *     pushStream.end('some pushed data');
+         *   });
+         *   stream.end('some data');
+         * });
+         * ```
+         *
+         * Setting the weight of a push stream is not allowed in the `HEADERS` frame. Pass
+         * a `weight` value to `http2stream.priority` with the `silent` option set to`true` to enable server-side bandwidth balancing between concurrent streams.
+         *
+         * Calling `http2stream.pushStream()` from within a pushed stream is not permitted
+         * and will throw an error.
+         * @since v8.4.0
+         * @param callback Callback that is called once the push stream has been initiated.
+         */
+        pushStream(headers: OutgoingHttpHeaders, callback?: (err: Error | null, pushStream: ServerHttp2Stream, headers: OutgoingHttpHeaders) => void): void;
+        pushStream(headers: OutgoingHttpHeaders, options?: StreamPriorityOptions, callback?: (err: Error | null, pushStream: ServerHttp2Stream, headers: OutgoingHttpHeaders) => void): void;
+        /**
+         * ```js
+         * const http2 = require('http2');
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   stream.respond({ ':status': 200 });
+         *   stream.end('some data');
+         * });
+         * ```
+         *
+         * When the `options.waitForTrailers` option is set, the `'wantTrailers'` event
+         * will be emitted immediately after queuing the last chunk of payload data to be
+         * sent. The `http2stream.sendTrailers()` method can then be used to sent trailing
+         * header fields to the peer.
+         *
+         * When `options.waitForTrailers` is set, the `Http2Stream` will not automatically
+         * close when the final `DATA` frame is transmitted. User code must call either`http2stream.sendTrailers()` or `http2stream.close()` to close the`Http2Stream`.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   stream.respond({ ':status': 200 }, { waitForTrailers: true });
+         *   stream.on('wantTrailers', () => {
+         *     stream.sendTrailers({ ABC: 'some value to send' });
+         *   });
+         *   stream.end('some data');
+         * });
+         * ```
+         * @since v8.4.0
+         */
+        respond(headers?: OutgoingHttpHeaders, options?: ServerStreamResponseOptions): void;
+        /**
+         * Initiates a response whose data is read from the given file descriptor. No
+         * validation is performed on the given file descriptor. If an error occurs while
+         * attempting to read data using the file descriptor, the `Http2Stream` will be
+         * closed using an `RST_STREAM` frame using the standard `INTERNAL_ERROR` code.
+         *
+         * When used, the `Http2Stream` object's `Duplex` interface will be closed
+         * automatically.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const fs = require('fs');
+         *
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   const fd = fs.openSync('/some/file', 'r');
+         *
+         *   const stat = fs.fstatSync(fd);
+         *   const headers = {
+         *     'content-length': stat.size,
+         *     'last-modified': stat.mtime.toUTCString(),
+         *     'content-type': 'text/plain; charset=utf-8'
+         *   };
+         *   stream.respondWithFD(fd, headers);
+         *   stream.on('close', () => fs.closeSync(fd));
+         * });
+         * ```
+         *
+         * The optional `options.statCheck` function may be specified to give user code
+         * an opportunity to set additional content headers based on the `fs.Stat` details
+         * of the given fd. If the `statCheck` function is provided, the`http2stream.respondWithFD()` method will perform an `fs.fstat()` call to
+         * collect details on the provided file descriptor.
+         *
+         * The `offset` and `length` options may be used to limit the response to a
+         * specific range subset. This can be used, for instance, to support HTTP Range
+         * requests.
+         *
+         * The file descriptor or `FileHandle` is not closed when the stream is closed,
+         * so it will need to be closed manually once it is no longer needed.
+         * Using the same file descriptor concurrently for multiple streams
+         * is not supported and may result in data loss. Re-using a file descriptor
+         * after a stream has finished is supported.
+         *
+         * When the `options.waitForTrailers` option is set, the `'wantTrailers'` event
+         * will be emitted immediately after queuing the last chunk of payload data to be
+         * sent. The `http2stream.sendTrailers()` method can then be used to sent trailing
+         * header fields to the peer.
+         *
+         * When `options.waitForTrailers` is set, the `Http2Stream` will not automatically
+         * close when the final `DATA` frame is transmitted. User code _must_ call either`http2stream.sendTrailers()` or `http2stream.close()` to close the`Http2Stream`.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const fs = require('fs');
+         *
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   const fd = fs.openSync('/some/file', 'r');
+         *
+         *   const stat = fs.fstatSync(fd);
+         *   const headers = {
+         *     'content-length': stat.size,
+         *     'last-modified': stat.mtime.toUTCString(),
+         *     'content-type': 'text/plain; charset=utf-8'
+         *   };
+         *   stream.respondWithFD(fd, headers, { waitForTrailers: true });
+         *   stream.on('wantTrailers', () => {
+         *     stream.sendTrailers({ ABC: 'some value to send' });
+         *   });
+         *
+         *   stream.on('close', () => fs.closeSync(fd));
+         * });
+         * ```
+         * @since v8.4.0
+         * @param fd A readable file descriptor.
+         */
+        respondWithFD(fd: number | fs.promises.FileHandle, headers?: OutgoingHttpHeaders, options?: ServerStreamFileResponseOptions): void;
+        /**
+         * Sends a regular file as the response. The `path` must specify a regular file
+         * or an `'error'` event will be emitted on the `Http2Stream` object.
+         *
+         * When used, the `Http2Stream` object's `Duplex` interface will be closed
+         * automatically.
+         *
+         * The optional `options.statCheck` function may be specified to give user code
+         * an opportunity to set additional content headers based on the `fs.Stat` details
+         * of the given file:
+         *
+         * If an error occurs while attempting to read the file data, the `Http2Stream`will be closed using an `RST_STREAM` frame using the standard `INTERNAL_ERROR`code. If the `onError` callback is
+         * defined, then it will be called. Otherwise
+         * the stream will be destroyed.
+         *
+         * Example using a file path:
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   function statCheck(stat, headers) {
+         *     headers['last-modified'] = stat.mtime.toUTCString();
+         *   }
+         *
+         *   function onError(err) {
+         *     // stream.respond() can throw if the stream has been destroyed by
+         *     // the other side.
+         *     try {
+         *       if (err.code === 'ENOENT') {
+         *         stream.respond({ ':status': 404 });
+         *       } else {
+         *         stream.respond({ ':status': 500 });
+         *       }
+         *     } catch (err) {
+         *       // Perform actual error handling.
+         *       console.log(err);
+         *     }
+         *     stream.end();
+         *   }
+         *
+         *   stream.respondWithFile('/some/file',
+         *                          { 'content-type': 'text/plain; charset=utf-8' },
+         *                          { statCheck, onError });
+         * });
+         * ```
+         *
+         * The `options.statCheck` function may also be used to cancel the send operation
+         * by returning `false`. For instance, a conditional request may check the stat
+         * results to determine if the file has been modified to return an appropriate`304` response:
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   function statCheck(stat, headers) {
+         *     // Check the stat here...
+         *     stream.respond({ ':status': 304 });
+         *     return false; // Cancel the send operation
+         *   }
+         *   stream.respondWithFile('/some/file',
+         *                          { 'content-type': 'text/plain; charset=utf-8' },
+         *                          { statCheck });
+         * });
+         * ```
+         *
+         * The `content-length` header field will be automatically set.
+         *
+         * The `offset` and `length` options may be used to limit the response to a
+         * specific range subset. This can be used, for instance, to support HTTP Range
+         * requests.
+         *
+         * The `options.onError` function may also be used to handle all the errors
+         * that could happen before the delivery of the file is initiated. The
+         * default behavior is to destroy the stream.
+         *
+         * When the `options.waitForTrailers` option is set, the `'wantTrailers'` event
+         * will be emitted immediately after queuing the last chunk of payload data to be
+         * sent. The `http2stream.sendTrailers()` method can then be used to sent trailing
+         * header fields to the peer.
+         *
+         * When `options.waitForTrailers` is set, the `Http2Stream` will not automatically
+         * close when the final `DATA` frame is transmitted. User code must call either`http2stream.sendTrailers()` or `http2stream.close()` to close the`Http2Stream`.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const server = http2.createServer();
+         * server.on('stream', (stream) => {
+         *   stream.respondWithFile('/some/file',
+         *                          { 'content-type': 'text/plain; charset=utf-8' },
+         *                          { waitForTrailers: true });
+         *   stream.on('wantTrailers', () => {
+         *     stream.sendTrailers({ ABC: 'some value to send' });
+         *   });
+         * });
+         * ```
+         * @since v8.4.0
+         */
+        respondWithFile(path: string, headers?: OutgoingHttpHeaders, options?: ServerStreamFileResponseOptionsWithError): void;
+    }
+    // Http2Session
+    export interface Settings {
+        headerTableSize?: number | undefined;
+        enablePush?: boolean | undefined;
+        initialWindowSize?: number | undefined;
+        maxFrameSize?: number | undefined;
+        maxConcurrentStreams?: number | undefined;
+        maxHeaderListSize?: number | undefined;
+        enableConnectProtocol?: boolean | undefined;
+    }
+    export interface ClientSessionRequestOptions {
+        endStream?: boolean | undefined;
+        exclusive?: boolean | undefined;
+        parent?: number | undefined;
+        weight?: number | undefined;
+        waitForTrailers?: boolean | undefined;
+        signal?: AbortSignal | undefined;
+    }
+    export interface SessionState {
+        effectiveLocalWindowSize?: number | undefined;
+        effectiveRecvDataLength?: number | undefined;
+        nextStreamID?: number | undefined;
+        localWindowSize?: number | undefined;
+        lastProcStreamID?: number | undefined;
+        remoteWindowSize?: number | undefined;
+        outboundQueueSize?: number | undefined;
+        deflateDynamicTableSize?: number | undefined;
+        inflateDynamicTableSize?: number | undefined;
+    }
+    export interface Http2Session extends EventEmitter {
+        /**
+         * Value will be `undefined` if the `Http2Session` is not yet connected to a
+         * socket, `h2c` if the `Http2Session` is not connected to a `TLSSocket`, or
+         * will return the value of the connected `TLSSocket`'s own `alpnProtocol`property.
+         * @since v9.4.0
+         */
+        readonly alpnProtocol?: string | undefined;
+        /**
+         * Will be `true` if this `Http2Session` instance has been closed, otherwise`false`.
+         * @since v9.4.0
+         */
+        readonly closed: boolean;
+        /**
+         * Will be `true` if this `Http2Session` instance is still connecting, will be set
+         * to `false` before emitting `connect` event and/or calling the `http2.connect`callback.
+         * @since v10.0.0
+         */
+        readonly connecting: boolean;
+        /**
+         * Will be `true` if this `Http2Session` instance has been destroyed and must no
+         * longer be used, otherwise `false`.
+         * @since v8.4.0
+         */
+        readonly destroyed: boolean;
+        /**
+         * Value is `undefined` if the `Http2Session` session socket has not yet been
+         * connected, `true` if the `Http2Session` is connected with a `TLSSocket`,
+         * and `false` if the `Http2Session` is connected to any other kind of socket
+         * or stream.
+         * @since v9.4.0
+         */
+        readonly encrypted?: boolean | undefined;
+        /**
+         * A prototype-less object describing the current local settings of this`Http2Session`. The local settings are local to _this_`Http2Session` instance.
+         * @since v8.4.0
+         */
+        readonly localSettings: Settings;
+        /**
+         * If the `Http2Session` is connected to a `TLSSocket`, the `originSet` property
+         * will return an `Array` of origins for which the `Http2Session` may be
+         * considered authoritative.
+         *
+         * The `originSet` property is only available when using a secure TLS connection.
+         * @since v9.4.0
+         */
+        readonly originSet?: string[] | undefined;
+        /**
+         * Indicates whether the `Http2Session` is currently waiting for acknowledgment of
+         * a sent `SETTINGS` frame. Will be `true` after calling the`http2session.settings()` method. Will be `false` once all sent `SETTINGS`frames have been acknowledged.
+         * @since v8.4.0
+         */
+        readonly pendingSettingsAck: boolean;
+        /**
+         * A prototype-less object describing the current remote settings of this`Http2Session`. The remote settings are set by the _connected_ HTTP/2 peer.
+         * @since v8.4.0
+         */
+        readonly remoteSettings: Settings;
+        /**
+         * Returns a `Proxy` object that acts as a `net.Socket` (or `tls.TLSSocket`) but
+         * limits available methods to ones safe to use with HTTP/2.
+         *
+         * `destroy`, `emit`, `end`, `pause`, `read`, `resume`, and `write` will throw
+         * an error with code `ERR_HTTP2_NO_SOCKET_MANIPULATION`. See `Http2Session and Sockets` for more information.
+         *
+         * `setTimeout` method will be called on this `Http2Session`.
+         *
+         * All other interactions will be routed directly to the socket.
+         * @since v8.4.0
+         */
+        readonly socket: net.Socket | tls.TLSSocket;
+        /**
+         * Provides miscellaneous information about the current state of the`Http2Session`.
+         *
+         * An object describing the current status of this `Http2Session`.
+         * @since v8.4.0
+         */
+        readonly state: SessionState;
+        /**
+         * The `http2session.type` will be equal to`http2.constants.NGHTTP2_SESSION_SERVER` if this `Http2Session` instance is a
+         * server, and `http2.constants.NGHTTP2_SESSION_CLIENT` if the instance is a
+         * client.
+         * @since v8.4.0
+         */
+        readonly type: number;
+        /**
+         * Gracefully closes the `Http2Session`, allowing any existing streams to
+         * complete on their own and preventing new `Http2Stream` instances from being
+         * created. Once closed, `http2session.destroy()`_might_ be called if there
+         * are no open `Http2Stream` instances.
+         *
+         * If specified, the `callback` function is registered as a handler for the`'close'` event.
+         * @since v9.4.0
+         */
+        close(callback?: () => void): void;
+        /**
+         * Immediately terminates the `Http2Session` and the associated `net.Socket` or`tls.TLSSocket`.
+         *
+         * Once destroyed, the `Http2Session` will emit the `'close'` event. If `error`is not undefined, an `'error'` event will be emitted immediately before the`'close'` event.
+         *
+         * If there are any remaining open `Http2Streams` associated with the`Http2Session`, those will also be destroyed.
+         * @since v8.4.0
+         * @param error An `Error` object if the `Http2Session` is being destroyed due to an error.
+         * @param code The HTTP/2 error code to send in the final `GOAWAY` frame. If unspecified, and `error` is not undefined, the default is `INTERNAL_ERROR`, otherwise defaults to `NO_ERROR`.
+         */
+        destroy(error?: Error, code?: number): void;
+        /**
+         * Transmits a `GOAWAY` frame to the connected peer _without_ shutting down the`Http2Session`.
+         * @since v9.4.0
+         * @param code An HTTP/2 error code
+         * @param lastStreamID The numeric ID of the last processed `Http2Stream`
+         * @param opaqueData A `TypedArray` or `DataView` instance containing additional data to be carried within the `GOAWAY` frame.
+         */
+        goaway(code?: number, lastStreamID?: number, opaqueData?: NodeJS.ArrayBufferView): void;
+        /**
+         * Sends a `PING` frame to the connected HTTP/2 peer. A `callback` function must
+         * be provided. The method will return `true` if the `PING` was sent, `false`otherwise.
+         *
+         * The maximum number of outstanding (unacknowledged) pings is determined by the`maxOutstandingPings` configuration option. The default maximum is 10.
+         *
+         * If provided, the `payload` must be a `Buffer`, `TypedArray`, or `DataView`containing 8 bytes of data that will be transmitted with the `PING` and
+         * returned with the ping acknowledgment.
+         *
+         * The callback will be invoked with three arguments: an error argument that will
+         * be `null` if the `PING` was successfully acknowledged, a `duration` argument
+         * that reports the number of milliseconds elapsed since the ping was sent and the
+         * acknowledgment was received, and a `Buffer` containing the 8-byte `PING`payload.
+         *
+         * ```js
+         * session.ping(Buffer.from('abcdefgh'), (err, duration, payload) => {
+         *   if (!err) {
+         *     console.log(`Ping acknowledged in ${duration} milliseconds`);
+         *     console.log(`With payload '${payload.toString()}'`);
+         *   }
+         * });
+         * ```
+         *
+         * If the `payload` argument is not specified, the default payload will be the
+         * 64-bit timestamp (little endian) marking the start of the `PING` duration.
+         * @since v8.9.3
+         * @param payload Optional ping payload.
+         */
+        ping(callback: (err: Error | null, duration: number, payload: Buffer) => void): boolean;
+        ping(payload: NodeJS.ArrayBufferView, callback: (err: Error | null, duration: number, payload: Buffer) => void): boolean;
+        /**
+         * Calls `ref()` on this `Http2Session`instance's underlying `net.Socket`.
+         * @since v9.4.0
+         */
+        ref(): void;
+        /**
+         * Sets the local endpoint's window size.
+         * The `windowSize` is the total window size to set, not
+         * the delta.
+         *
+         * ```js
+         * const http2 = require('http2');
+         *
+         * const server = http2.createServer();
+         * const expectedWindowSize = 2 ** 20;
+         * server.on('connect', (session) => {
+         *
+         *   // Set local window size to be 2 ** 20
+         *   session.setLocalWindowSize(expectedWindowSize);
+         * });
+         * ```
+         * @since v15.3.0, v14.18.0
+         */
+        setLocalWindowSize(windowSize: number): void;
+        /**
+         * Used to set a callback function that is called when there is no activity on
+         * the `Http2Session` after `msecs` milliseconds. The given `callback` is
+         * registered as a listener on the `'timeout'` event.
+         * @since v8.4.0
+         */
+        setTimeout(msecs: number, callback?: () => void): void;
+        /**
+         * Updates the current local settings for this `Http2Session` and sends a new`SETTINGS` frame to the connected HTTP/2 peer.
+         *
+         * Once called, the `http2session.pendingSettingsAck` property will be `true`while the session is waiting for the remote peer to acknowledge the new
+         * settings.
+         *
+         * The new settings will not become effective until the `SETTINGS` acknowledgment
+         * is received and the `'localSettings'` event is emitted. It is possible to send
+         * multiple `SETTINGS` frames while acknowledgment is still pending.
+         * @since v8.4.0
+         * @param callback Callback that is called once the session is connected or right away if the session is already connected.
+         */
+        settings(settings: Settings, callback?: (err: Error | null, settings: Settings, duration: number) => void): void;
+        /**
+         * Calls `unref()` on this `Http2Session`instance's underlying `net.Socket`.
+         * @since v9.4.0
+         */
+        unref(): void;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'frameError', listener: (frameType: number, errorCode: number, streamID: number) => void): this;
+        addListener(event: 'goaway', listener: (errorCode: number, lastStreamID: number, opaqueData: Buffer) => void): this;
+        addListener(event: 'localSettings', listener: (settings: Settings) => void): this;
+        addListener(event: 'ping', listener: () => void): this;
+        addListener(event: 'remoteSettings', listener: (settings: Settings) => void): this;
+        addListener(event: 'timeout', listener: () => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'close'): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'frameError', frameType: number, errorCode: number, streamID: number): boolean;
+        emit(event: 'goaway', errorCode: number, lastStreamID: number, opaqueData: Buffer): boolean;
+        emit(event: 'localSettings', settings: Settings): boolean;
+        emit(event: 'ping'): boolean;
+        emit(event: 'remoteSettings', settings: Settings): boolean;
+        emit(event: 'timeout'): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'frameError', listener: (frameType: number, errorCode: number, streamID: number) => void): this;
+        on(event: 'goaway', listener: (errorCode: number, lastStreamID: number, opaqueData: Buffer) => void): this;
+        on(event: 'localSettings', listener: (settings: Settings) => void): this;
+        on(event: 'ping', listener: () => void): this;
+        on(event: 'remoteSettings', listener: (settings: Settings) => void): this;
+        on(event: 'timeout', listener: () => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'frameError', listener: (frameType: number, errorCode: number, streamID: number) => void): this;
+        once(event: 'goaway', listener: (errorCode: number, lastStreamID: number, opaqueData: Buffer) => void): this;
+        once(event: 'localSettings', listener: (settings: Settings) => void): this;
+        once(event: 'ping', listener: () => void): this;
+        once(event: 'remoteSettings', listener: (settings: Settings) => void): this;
+        once(event: 'timeout', listener: () => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'frameError', listener: (frameType: number, errorCode: number, streamID: number) => void): this;
+        prependListener(event: 'goaway', listener: (errorCode: number, lastStreamID: number, opaqueData: Buffer) => void): this;
+        prependListener(event: 'localSettings', listener: (settings: Settings) => void): this;
+        prependListener(event: 'ping', listener: () => void): this;
+        prependListener(event: 'remoteSettings', listener: (settings: Settings) => void): this;
+        prependListener(event: 'timeout', listener: () => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'frameError', listener: (frameType: number, errorCode: number, streamID: number) => void): this;
+        prependOnceListener(event: 'goaway', listener: (errorCode: number, lastStreamID: number, opaqueData: Buffer) => void): this;
+        prependOnceListener(event: 'localSettings', listener: (settings: Settings) => void): this;
+        prependOnceListener(event: 'ping', listener: () => void): this;
+        prependOnceListener(event: 'remoteSettings', listener: (settings: Settings) => void): this;
+        prependOnceListener(event: 'timeout', listener: () => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    export interface ClientHttp2Session extends Http2Session {
+        /**
+         * For HTTP/2 Client `Http2Session` instances only, the `http2session.request()`creates and returns an `Http2Stream` instance that can be used to send an
+         * HTTP/2 request to the connected server.
+         *
+         * When a `ClientHttp2Session` is first created, the socket may not yet be
+         * connected. if `clienthttp2session.request()` is called during this time, the
+         * actual request will be deferred until the socket is ready to go.
+         * If the `session` is closed before the actual request be executed, an`ERR_HTTP2_GOAWAY_SESSION` is thrown.
+         *
+         * This method is only available if `http2session.type` is equal to`http2.constants.NGHTTP2_SESSION_CLIENT`.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const clientSession = http2.connect('https://localhost:1234');
+         * const {
+         *   HTTP2_HEADER_PATH,
+         *   HTTP2_HEADER_STATUS
+         * } = http2.constants;
+         *
+         * const req = clientSession.request({ [HTTP2_HEADER_PATH]: '/' });
+         * req.on('response', (headers) => {
+         *   console.log(headers[HTTP2_HEADER_STATUS]);
+         *   req.on('data', (chunk) => { // ..  });
+         *   req.on('end', () => { // ..  });
+         * });
+         * ```
+         *
+         * When the `options.waitForTrailers` option is set, the `'wantTrailers'` event
+         * is emitted immediately after queuing the last chunk of payload data to be sent.
+         * The `http2stream.sendTrailers()` method can then be called to send trailing
+         * headers to the peer.
+         *
+         * When `options.waitForTrailers` is set, the `Http2Stream` will not automatically
+         * close when the final `DATA` frame is transmitted. User code must call either`http2stream.sendTrailers()` or `http2stream.close()` to close the`Http2Stream`.
+         *
+         * When `options.signal` is set with an `AbortSignal` and then `abort` on the
+         * corresponding `AbortController` is called, the request will emit an `'error'`event with an `AbortError` error.
+         *
+         * The `:method` and `:path` pseudo-headers are not specified within `headers`,
+         * they respectively default to:
+         *
+         * * `:method` \= `'GET'`
+         * * `:path` \= `/`
+         * @since v8.4.0
+         */
+        request(headers?: OutgoingHttpHeaders, options?: ClientSessionRequestOptions): ClientHttp2Stream;
+        addListener(event: 'altsvc', listener: (alt: string, origin: string, stream: number) => void): this;
+        addListener(event: 'origin', listener: (origins: string[]) => void): this;
+        addListener(event: 'connect', listener: (session: ClientHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        addListener(event: 'stream', listener: (stream: ClientHttp2Stream, headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'altsvc', alt: string, origin: string, stream: number): boolean;
+        emit(event: 'origin', origins: ReadonlyArray<string>): boolean;
+        emit(event: 'connect', session: ClientHttp2Session, socket: net.Socket | tls.TLSSocket): boolean;
+        emit(event: 'stream', stream: ClientHttp2Stream, headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'altsvc', listener: (alt: string, origin: string, stream: number) => void): this;
+        on(event: 'origin', listener: (origins: string[]) => void): this;
+        on(event: 'connect', listener: (session: ClientHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        on(event: 'stream', listener: (stream: ClientHttp2Stream, headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'altsvc', listener: (alt: string, origin: string, stream: number) => void): this;
+        once(event: 'origin', listener: (origins: string[]) => void): this;
+        once(event: 'connect', listener: (session: ClientHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        once(event: 'stream', listener: (stream: ClientHttp2Stream, headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'altsvc', listener: (alt: string, origin: string, stream: number) => void): this;
+        prependListener(event: 'origin', listener: (origins: string[]) => void): this;
+        prependListener(event: 'connect', listener: (session: ClientHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        prependListener(event: 'stream', listener: (stream: ClientHttp2Stream, headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'altsvc', listener: (alt: string, origin: string, stream: number) => void): this;
+        prependOnceListener(event: 'origin', listener: (origins: string[]) => void): this;
+        prependOnceListener(event: 'connect', listener: (session: ClientHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        prependOnceListener(event: 'stream', listener: (stream: ClientHttp2Stream, headers: IncomingHttpHeaders & IncomingHttpStatusHeader, flags: number) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    export interface AlternativeServiceOptions {
+        origin: number | string | url.URL;
+    }
+    export interface ServerHttp2Session extends Http2Session {
+        readonly server: Http2Server | Http2SecureServer;
+        /**
+         * Submits an `ALTSVC` frame (as defined by [RFC 7838](https://tools.ietf.org/html/rfc7838)) to the connected client.
+         *
+         * ```js
+         * const http2 = require('http2');
+         *
+         * const server = http2.createServer();
+         * server.on('session', (session) => {
+         *   // Set altsvc for origin https://example.org:80
+         *   session.altsvc('h2=":8000"', 'https://example.org:80');
+         * });
+         *
+         * server.on('stream', (stream) => {
+         *   // Set altsvc for a specific stream
+         *   stream.session.altsvc('h2=":8000"', stream.id);
+         * });
+         * ```
+         *
+         * Sending an `ALTSVC` frame with a specific stream ID indicates that the alternate
+         * service is associated with the origin of the given `Http2Stream`.
+         *
+         * The `alt` and origin string _must_ contain only ASCII bytes and are
+         * strictly interpreted as a sequence of ASCII bytes. The special value `'clear'`may be passed to clear any previously set alternative service for a given
+         * domain.
+         *
+         * When a string is passed for the `originOrStream` argument, it will be parsed as
+         * a URL and the origin will be derived. For instance, the origin for the
+         * HTTP URL `'https://example.org/foo/bar'` is the ASCII string`'https://example.org'`. An error will be thrown if either the given string
+         * cannot be parsed as a URL or if a valid origin cannot be derived.
+         *
+         * A `URL` object, or any object with an `origin` property, may be passed as`originOrStream`, in which case the value of the `origin` property will be
+         * used. The value of the `origin` property _must_ be a properly serialized
+         * ASCII origin.
+         * @since v9.4.0
+         * @param alt A description of the alternative service configuration as defined by `RFC 7838`.
+         * @param originOrStream Either a URL string specifying the origin (or an `Object` with an `origin` property) or the numeric identifier of an active `Http2Stream` as given by the
+         * `http2stream.id` property.
+         */
+        altsvc(alt: string, originOrStream: number | string | url.URL | AlternativeServiceOptions): void;
+        /**
+         * Submits an `ORIGIN` frame (as defined by [RFC 8336](https://tools.ietf.org/html/rfc8336)) to the connected client
+         * to advertise the set of origins for which the server is capable of providing
+         * authoritative responses.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const options = getSecureOptionsSomehow();
+         * const server = http2.createSecureServer(options);
+         * server.on('stream', (stream) => {
+         *   stream.respond();
+         *   stream.end('ok');
+         * });
+         * server.on('session', (session) => {
+         *   session.origin('https://example.com', 'https://example.org');
+         * });
+         * ```
+         *
+         * When a string is passed as an `origin`, it will be parsed as a URL and the
+         * origin will be derived. For instance, the origin for the HTTP URL`'https://example.org/foo/bar'` is the ASCII string`'https://example.org'`. An error will be thrown if either the given
+         * string
+         * cannot be parsed as a URL or if a valid origin cannot be derived.
+         *
+         * A `URL` object, or any object with an `origin` property, may be passed as
+         * an `origin`, in which case the value of the `origin` property will be
+         * used. The value of the `origin` property _must_ be a properly serialized
+         * ASCII origin.
+         *
+         * Alternatively, the `origins` option may be used when creating a new HTTP/2
+         * server using the `http2.createSecureServer()` method:
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const options = getSecureOptionsSomehow();
+         * options.origins = ['https://example.com', 'https://example.org'];
+         * const server = http2.createSecureServer(options);
+         * server.on('stream', (stream) => {
+         *   stream.respond();
+         *   stream.end('ok');
+         * });
+         * ```
+         * @since v10.12.0
+         * @param origins One or more URL Strings passed as separate arguments.
+         */
+        origin(
+            ...origins: Array<
+                | string
+                | url.URL
+                | {
+                      origin: string;
+                  }
+            >
+        ): void;
+        addListener(event: 'connect', listener: (session: ServerHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        addListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'connect', session: ServerHttp2Session, socket: net.Socket | tls.TLSSocket): boolean;
+        emit(event: 'stream', stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'connect', listener: (session: ServerHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        on(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'connect', listener: (session: ServerHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        once(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'connect', listener: (session: ServerHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        prependListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'connect', listener: (session: ServerHttp2Session, socket: net.Socket | tls.TLSSocket) => void): this;
+        prependOnceListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    // Http2Server
+    export interface SessionOptions {
+        maxDeflateDynamicTableSize?: number | undefined;
+        maxSessionMemory?: number | undefined;
+        maxHeaderListPairs?: number | undefined;
+        maxOutstandingPings?: number | undefined;
+        maxSendHeaderBlockLength?: number | undefined;
+        paddingStrategy?: number | undefined;
+        peerMaxConcurrentStreams?: number | undefined;
+        settings?: Settings | undefined;
+        /**
+         * Specifies a timeout in milliseconds that
+         * a server should wait when an [`'unknownProtocol'`][] is emitted. If the
+         * socket has not been destroyed by that time the server will destroy it.
+         * @default 100000
+         */
+        unknownProtocolTimeout?: number | undefined;
+        selectPadding?(frameLen: number, maxFrameLen: number): number;
+        createConnection?(authority: url.URL, option: SessionOptions): stream.Duplex;
+    }
+    export interface ClientSessionOptions extends SessionOptions {
+        maxReservedRemoteStreams?: number | undefined;
+        createConnection?: ((authority: url.URL, option: SessionOptions) => stream.Duplex) | undefined;
+        protocol?: 'http:' | 'https:' | undefined;
+    }
+    export interface ServerSessionOptions extends SessionOptions {
+        Http1IncomingMessage?: typeof IncomingMessage | undefined;
+        Http1ServerResponse?: typeof ServerResponse | undefined;
+        Http2ServerRequest?: typeof Http2ServerRequest | undefined;
+        Http2ServerResponse?: typeof Http2ServerResponse | undefined;
+    }
+    export interface SecureClientSessionOptions extends ClientSessionOptions, tls.ConnectionOptions {}
+    export interface SecureServerSessionOptions extends ServerSessionOptions, tls.TlsOptions {}
+    export interface ServerOptions extends ServerSessionOptions {}
+    export interface SecureServerOptions extends SecureServerSessionOptions {
+        allowHTTP1?: boolean | undefined;
+        origins?: string[] | undefined;
+    }
+    interface HTTP2ServerCommon {
+        setTimeout(msec?: number, callback?: () => void): this;
+        /**
+         * Throws ERR_HTTP2_INVALID_SETTING_VALUE for invalid settings values.
+         * Throws ERR_INVALID_ARG_TYPE for invalid settings argument.
+         */
+        updateSettings(settings: Settings): void;
+    }
+    export interface Http2Server extends net.Server, HTTP2ServerCommon {
+        addListener(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        addListener(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        addListener(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        addListener(event: 'sessionError', listener: (err: Error) => void): this;
+        addListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        addListener(event: 'timeout', listener: () => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'checkContinue', request: Http2ServerRequest, response: Http2ServerResponse): boolean;
+        emit(event: 'request', request: Http2ServerRequest, response: Http2ServerResponse): boolean;
+        emit(event: 'session', session: ServerHttp2Session): boolean;
+        emit(event: 'sessionError', err: Error): boolean;
+        emit(event: 'stream', stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number): boolean;
+        emit(event: 'timeout'): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        on(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        on(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        on(event: 'sessionError', listener: (err: Error) => void): this;
+        on(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        on(event: 'timeout', listener: () => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        once(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        once(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        once(event: 'sessionError', listener: (err: Error) => void): this;
+        once(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        once(event: 'timeout', listener: () => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        prependListener(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        prependListener(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        prependListener(event: 'sessionError', listener: (err: Error) => void): this;
+        prependListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        prependListener(event: 'timeout', listener: () => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        prependOnceListener(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        prependOnceListener(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        prependOnceListener(event: 'sessionError', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        prependOnceListener(event: 'timeout', listener: () => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    export interface Http2SecureServer extends tls.Server, HTTP2ServerCommon {
+        addListener(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        addListener(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        addListener(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        addListener(event: 'sessionError', listener: (err: Error) => void): this;
+        addListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        addListener(event: 'timeout', listener: () => void): this;
+        addListener(event: 'unknownProtocol', listener: (socket: tls.TLSSocket) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'checkContinue', request: Http2ServerRequest, response: Http2ServerResponse): boolean;
+        emit(event: 'request', request: Http2ServerRequest, response: Http2ServerResponse): boolean;
+        emit(event: 'session', session: ServerHttp2Session): boolean;
+        emit(event: 'sessionError', err: Error): boolean;
+        emit(event: 'stream', stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number): boolean;
+        emit(event: 'timeout'): boolean;
+        emit(event: 'unknownProtocol', socket: tls.TLSSocket): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        on(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        on(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        on(event: 'sessionError', listener: (err: Error) => void): this;
+        on(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        on(event: 'timeout', listener: () => void): this;
+        on(event: 'unknownProtocol', listener: (socket: tls.TLSSocket) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        once(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        once(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        once(event: 'sessionError', listener: (err: Error) => void): this;
+        once(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        once(event: 'timeout', listener: () => void): this;
+        once(event: 'unknownProtocol', listener: (socket: tls.TLSSocket) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        prependListener(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        prependListener(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        prependListener(event: 'sessionError', listener: (err: Error) => void): this;
+        prependListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        prependListener(event: 'timeout', listener: () => void): this;
+        prependListener(event: 'unknownProtocol', listener: (socket: tls.TLSSocket) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'checkContinue', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        prependOnceListener(event: 'request', listener: (request: Http2ServerRequest, response: Http2ServerResponse) => void): this;
+        prependOnceListener(event: 'session', listener: (session: ServerHttp2Session) => void): this;
+        prependOnceListener(event: 'sessionError', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'stream', listener: (stream: ServerHttp2Stream, headers: IncomingHttpHeaders, flags: number) => void): this;
+        prependOnceListener(event: 'timeout', listener: () => void): this;
+        prependOnceListener(event: 'unknownProtocol', listener: (socket: tls.TLSSocket) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    /**
+     * A `Http2ServerRequest` object is created by {@link Server} or {@link SecureServer} and passed as the first argument to the `'request'` event. It may be used to access a request status,
+     * headers, and
+     * data.
+     * @since v8.4.0
+     */
+    export class Http2ServerRequest extends stream.Readable {
+        constructor(stream: ServerHttp2Stream, headers: IncomingHttpHeaders, options: stream.ReadableOptions, rawHeaders: ReadonlyArray<string>);
+        /**
+         * The `request.aborted` property will be `true` if the request has
+         * been aborted.
+         * @since v10.1.0
+         */
+        readonly aborted: boolean;
+        /**
+         * The request authority pseudo header field. Because HTTP/2 allows requests
+         * to set either `:authority` or `host`, this value is derived from`req.headers[':authority']` if present. Otherwise, it is derived from`req.headers['host']`.
+         * @since v8.4.0
+         */
+        readonly authority: string;
+        /**
+         * See `request.socket`.
+         * @since v8.4.0
+         * @deprecated Since v13.0.0 - Use `socket`.
+         */
+        readonly connection: net.Socket | tls.TLSSocket;
+        /**
+         * The `request.complete` property will be `true` if the request has
+         * been completed, aborted, or destroyed.
+         * @since v12.10.0
+         */
+        readonly complete: boolean;
+        /**
+         * The request/response headers object.
+         *
+         * Key-value pairs of header names and values. Header names are lower-cased.
+         *
+         * ```js
+         * // Prints something like:
+         * //
+         * // { 'user-agent': 'curl/7.22.0',
+         * //   host: '127.0.0.1:8000',
+         * //   accept: '*' }
+         * console.log(request.headers);
+         * ```
+         *
+         * See `HTTP/2 Headers Object`.
+         *
+         * In HTTP/2, the request path, host name, protocol, and method are represented as
+         * special headers prefixed with the `:` character (e.g. `':path'`). These special
+         * headers will be included in the `request.headers` object. Care must be taken not
+         * to inadvertently modify these special headers or errors may occur. For instance,
+         * removing all headers from the request will cause errors to occur:
+         *
+         * ```js
+         * removeAllHeaders(request.headers);
+         * assert(request.url);   // Fails because the :path header has been removed
+         * ```
+         * @since v8.4.0
+         */
+        readonly headers: IncomingHttpHeaders;
+        /**
+         * In case of server request, the HTTP version sent by the client. In the case of
+         * client response, the HTTP version of the connected-to server. Returns`'2.0'`.
+         *
+         * Also `message.httpVersionMajor` is the first integer and`message.httpVersionMinor` is the second.
+         * @since v8.4.0
+         */
+        readonly httpVersion: string;
+        readonly httpVersionMinor: number;
+        readonly httpVersionMajor: number;
+        /**
+         * The request method as a string. Read-only. Examples: `'GET'`, `'DELETE'`.
+         * @since v8.4.0
+         */
+        readonly method: string;
+        /**
+         * The raw request/response headers list exactly as they were received.
+         *
+         * The keys and values are in the same list. It is _not_ a
+         * list of tuples. So, the even-numbered offsets are key values, and the
+         * odd-numbered offsets are the associated values.
+         *
+         * Header names are not lowercased, and duplicates are not merged.
+         *
+         * ```js
+         * // Prints something like:
+         * //
+         * // [ 'user-agent',
+         * //   'this is invalid because there can be only one',
+         * //   'User-Agent',
+         * //   'curl/7.22.0',
+         * //   'Host',
+         * //   '127.0.0.1:8000',
+         * //   'ACCEPT',
+         * //   '*' ]
+         * console.log(request.rawHeaders);
+         * ```
+         * @since v8.4.0
+         */
+        readonly rawHeaders: string[];
+        /**
+         * The raw request/response trailer keys and values exactly as they were
+         * received. Only populated at the `'end'` event.
+         * @since v8.4.0
+         */
+        readonly rawTrailers: string[];
+        /**
+         * The request scheme pseudo header field indicating the scheme
+         * portion of the target URL.
+         * @since v8.4.0
+         */
+        readonly scheme: string;
+        /**
+         * Returns a `Proxy` object that acts as a `net.Socket` (or `tls.TLSSocket`) but
+         * applies getters, setters, and methods based on HTTP/2 logic.
+         *
+         * `destroyed`, `readable`, and `writable` properties will be retrieved from and
+         * set on `request.stream`.
+         *
+         * `destroy`, `emit`, `end`, `on` and `once` methods will be called on`request.stream`.
+         *
+         * `setTimeout` method will be called on `request.stream.session`.
+         *
+         * `pause`, `read`, `resume`, and `write` will throw an error with code`ERR_HTTP2_NO_SOCKET_MANIPULATION`. See `Http2Session and Sockets` for
+         * more information.
+         *
+         * All other interactions will be routed directly to the socket. With TLS support,
+         * use `request.socket.getPeerCertificate()` to obtain the client's
+         * authentication details.
+         * @since v8.4.0
+         */
+        readonly socket: net.Socket | tls.TLSSocket;
+        /**
+         * The `Http2Stream` object backing the request.
+         * @since v8.4.0
+         */
+        readonly stream: ServerHttp2Stream;
+        /**
+         * The request/response trailers object. Only populated at the `'end'` event.
+         * @since v8.4.0
+         */
+        readonly trailers: IncomingHttpHeaders;
+        /**
+         * Request URL string. This contains only the URL that is present in the actual
+         * HTTP request. If the request is:
+         *
+         * ```http
+         * GET /status?name=ryan HTTP/1.1
+         * Accept: text/plain
+         * ```
+         *
+         * Then `request.url` will be:
+         *
+         * ```js
+         * '/status?name=ryan'
+         * ```
+         *
+         * To parse the url into its parts, `new URL()` can be used:
+         *
+         * ```console
+         * $ node
+         * > new URL('/status?name=ryan', 'http://example.com')
+         * URL {
+         *   href: 'http://example.com/status?name=ryan',
+         *   origin: 'http://example.com',
+         *   protocol: 'http:',
+         *   username: '',
+         *   password: '',
+         *   host: 'example.com',
+         *   hostname: 'example.com',
+         *   port: '',
+         *   pathname: '/status',
+         *   search: '?name=ryan',
+         *   searchParams: URLSearchParams { 'name' => 'ryan' },
+         *   hash: ''
+         * }
+         * ```
+         * @since v8.4.0
+         */
+        url: string;
+        /**
+         * Sets the `Http2Stream`'s timeout value to `msecs`. If a callback is
+         * provided, then it is added as a listener on the `'timeout'` event on
+         * the response object.
+         *
+         * If no `'timeout'` listener is added to the request, the response, or
+         * the server, then `Http2Stream` s are destroyed when they time out. If a
+         * handler is assigned to the request, the response, or the server's `'timeout'`events, timed out sockets must be handled explicitly.
+         * @since v8.4.0
+         */
+        setTimeout(msecs: number, callback?: () => void): void;
+        read(size?: number): Buffer | string | null;
+        addListener(event: 'aborted', listener: (hadError: boolean, code: number) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        addListener(event: 'end', listener: () => void): this;
+        addListener(event: 'readable', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'aborted', hadError: boolean, code: number): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'data', chunk: Buffer | string): boolean;
+        emit(event: 'end'): boolean;
+        emit(event: 'readable'): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'aborted', listener: (hadError: boolean, code: number) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        on(event: 'end', listener: () => void): this;
+        on(event: 'readable', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'aborted', listener: (hadError: boolean, code: number) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        once(event: 'end', listener: () => void): this;
+        once(event: 'readable', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'aborted', listener: (hadError: boolean, code: number) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        prependListener(event: 'end', listener: () => void): this;
+        prependListener(event: 'readable', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'aborted', listener: (hadError: boolean, code: number) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'data', listener: (chunk: Buffer | string) => void): this;
+        prependOnceListener(event: 'end', listener: () => void): this;
+        prependOnceListener(event: 'readable', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    /**
+     * This object is created internally by an HTTP server, not by the user. It is
+     * passed as the second parameter to the `'request'` event.
+     * @since v8.4.0
+     */
+    export class Http2ServerResponse extends stream.Writable {
+        constructor(stream: ServerHttp2Stream);
+        /**
+         * See `response.socket`.
+         * @since v8.4.0
+         * @deprecated Since v13.0.0 - Use `socket`.
+         */
+        readonly connection: net.Socket | tls.TLSSocket;
+        /**
+         * Boolean value that indicates whether the response has completed. Starts
+         * as `false`. After `response.end()` executes, the value will be `true`.
+         * @since v8.4.0
+         * @deprecated Since v13.4.0,v12.16.0 - Use `writableEnded`.
+         */
+        readonly finished: boolean;
+        /**
+         * True if headers were sent, false otherwise (read-only).
+         * @since v8.4.0
+         */
+        readonly headersSent: boolean;
+        /**
+         * A reference to the original HTTP2 request object.
+         * @since v15.7.0
+         */
+        readonly req: Http2ServerRequest;
+        /**
+         * Returns a `Proxy` object that acts as a `net.Socket` (or `tls.TLSSocket`) but
+         * applies getters, setters, and methods based on HTTP/2 logic.
+         *
+         * `destroyed`, `readable`, and `writable` properties will be retrieved from and
+         * set on `response.stream`.
+         *
+         * `destroy`, `emit`, `end`, `on` and `once` methods will be called on`response.stream`.
+         *
+         * `setTimeout` method will be called on `response.stream.session`.
+         *
+         * `pause`, `read`, `resume`, and `write` will throw an error with code`ERR_HTTP2_NO_SOCKET_MANIPULATION`. See `Http2Session and Sockets` for
+         * more information.
+         *
+         * All other interactions will be routed directly to the socket.
+         *
+         * ```js
+         * const http2 = require('http2');
+         * const server = http2.createServer((req, res) => {
+         *   const ip = req.socket.remoteAddress;
+         *   const port = req.socket.remotePort;
+         *   res.end(`Your IP address is ${ip} and your source port is ${port}.`);
+         * }).listen(3000);
+         * ```
+         * @since v8.4.0
+         */
+        readonly socket: net.Socket | tls.TLSSocket;
+        /**
+         * The `Http2Stream` object backing the response.
+         * @since v8.4.0
+         */
+        readonly stream: ServerHttp2Stream;
+        /**
+         * When true, the Date header will be automatically generated and sent in
+         * the response if it is not already present in the headers. Defaults to true.
+         *
+         * This should only be disabled for testing; HTTP requires the Date header
+         * in responses.
+         * @since v8.4.0
+         */
+        sendDate: boolean;
+        /**
+         * When using implicit headers (not calling `response.writeHead()` explicitly),
+         * this property controls the status code that will be sent to the client when
+         * the headers get flushed.
+         *
+         * ```js
+         * response.statusCode = 404;
+         * ```
+         *
+         * After response header was sent to the client, this property indicates the
+         * status code which was sent out.
+         * @since v8.4.0
+         */
+        statusCode: number;
+        /**
+         * Status message is not supported by HTTP/2 (RFC 7540 8.1.2.4). It returns
+         * an empty string.
+         * @since v8.4.0
+         */
+        statusMessage: '';
+        /**
+         * This method adds HTTP trailing headers (a header but at the end of the
+         * message) to the response.
+         *
+         * Attempting to set a header field name or value that contains invalid characters
+         * will result in a `TypeError` being thrown.
+         * @since v8.4.0
+         */
+        addTrailers(trailers: OutgoingHttpHeaders): void;
+        /**
+         * This method signals to the server that all of the response headers and body
+         * have been sent; that server should consider this message complete.
+         * The method, `response.end()`, MUST be called on each response.
+         *
+         * If `data` is specified, it is equivalent to calling `response.write(data, encoding)` followed by `response.end(callback)`.
+         *
+         * If `callback` is specified, it will be called when the response stream
+         * is finished.
+         * @since v8.4.0
+         */
+        end(callback?: () => void): this;
+        end(data: string | Uint8Array, callback?: () => void): this;
+        end(data: string | Uint8Array, encoding: BufferEncoding, callback?: () => void): this;
+        /**
+         * Reads out a header that has already been queued but not sent to the client.
+         * The name is case-insensitive.
+         *
+         * ```js
+         * const contentType = response.getHeader('content-type');
+         * ```
+         * @since v8.4.0
+         */
+        getHeader(name: string): string;
+        /**
+         * Returns an array containing the unique names of the current outgoing headers.
+         * All header names are lowercase.
+         *
+         * ```js
+         * response.setHeader('Foo', 'bar');
+         * response.setHeader('Set-Cookie', ['foo=bar', 'bar=baz']);
+         *
+         * const headerNames = response.getHeaderNames();
+         * // headerNames === ['foo', 'set-cookie']
+         * ```
+         * @since v8.4.0
+         */
+        getHeaderNames(): string[];
+        /**
+         * Returns a shallow copy of the current outgoing headers. Since a shallow copy
+         * is used, array values may be mutated without additional calls to various
+         * header-related http module methods. The keys of the returned object are the
+         * header names and the values are the respective header values. All header names
+         * are lowercase.
+         *
+         * The object returned by the `response.getHeaders()` method _does not_prototypically inherit from the JavaScript `Object`. This means that typical`Object` methods such as `obj.toString()`,
+         * `obj.hasOwnProperty()`, and others
+         * are not defined and _will not work_.
+         *
+         * ```js
+         * response.setHeader('Foo', 'bar');
+         * response.setHeader('Set-Cookie', ['foo=bar', 'bar=baz']);
+         *
+         * const headers = response.getHeaders();
+         * // headers === { foo: 'bar', 'set-cookie': ['foo=bar', 'bar=baz'] }
+         * ```
+         * @since v8.4.0
+         */
+        getHeaders(): OutgoingHttpHeaders;
+        /**
+         * Returns `true` if the header identified by `name` is currently set in the
+         * outgoing headers. The header name matching is case-insensitive.
+         *
+         * ```js
+         * const hasContentType = response.hasHeader('content-type');
+         * ```
+         * @since v8.4.0
+         */
+        hasHeader(name: string): boolean;
+        /**
+         * Removes a header that has been queued for implicit sending.
+         *
+         * ```js
+         * response.removeHeader('Content-Encoding');
+         * ```
+         * @since v8.4.0
+         */
+        removeHeader(name: string): void;
+        /**
+         * Sets a single header value for implicit headers. If this header already exists
+         * in the to-be-sent headers, its value will be replaced. Use an array of strings
+         * here to send multiple headers with the same name.
+         *
+         * ```js
+         * response.setHeader('Content-Type', 'text/html; charset=utf-8');
+         * ```
+         *
+         * or
+         *
+         * ```js
+         * response.setHeader('Set-Cookie', ['type=ninja', 'language=javascript']);
+         * ```
+         *
+         * Attempting to set a header field name or value that contains invalid characters
+         * will result in a `TypeError` being thrown.
+         *
+         * When headers have been set with `response.setHeader()`, they will be merged
+         * with any headers passed to `response.writeHead()`, with the headers passed
+         * to `response.writeHead()` given precedence.
+         *
+         * ```js
+         * // Returns content-type = text/plain
+         * const server = http2.createServer((req, res) => {
+         *   res.setHeader('Content-Type', 'text/html; charset=utf-8');
+         *   res.setHeader('X-Foo', 'bar');
+         *   res.writeHead(200, { 'Content-Type': 'text/plain; charset=utf-8' });
+         *   res.end('ok');
+         * });
+         * ```
+         * @since v8.4.0
+         */
+        setHeader(name: string, value: number | string | ReadonlyArray<string>): void;
+        /**
+         * Sets the `Http2Stream`'s timeout value to `msecs`. If a callback is
+         * provided, then it is added as a listener on the `'timeout'` event on
+         * the response object.
+         *
+         * If no `'timeout'` listener is added to the request, the response, or
+         * the server, then `Http2Stream` s are destroyed when they time out. If a
+         * handler is assigned to the request, the response, or the server's `'timeout'`events, timed out sockets must be handled explicitly.
+         * @since v8.4.0
+         */
+        setTimeout(msecs: number, callback?: () => void): void;
+        /**
+         * If this method is called and `response.writeHead()` has not been called,
+         * it will switch to implicit header mode and flush the implicit headers.
+         *
+         * This sends a chunk of the response body. This method may
+         * be called multiple times to provide successive parts of the body.
+         *
+         * In the `http` module, the response body is omitted when the
+         * request is a HEAD request. Similarly, the `204` and `304` responses _must not_ include a message body.
+         *
+         * `chunk` can be a string or a buffer. If `chunk` is a string,
+         * the second parameter specifies how to encode it into a byte stream.
+         * By default the `encoding` is `'utf8'`. `callback` will be called when this chunk
+         * of data is flushed.
+         *
+         * This is the raw HTTP body and has nothing to do with higher-level multi-part
+         * body encodings that may be used.
+         *
+         * The first time `response.write()` is called, it will send the buffered
+         * header information and the first chunk of the body to the client. The second
+         * time `response.write()` is called, Node.js assumes data will be streamed,
+         * and sends the new data separately. That is, the response is buffered up to the
+         * first chunk of the body.
+         *
+         * Returns `true` if the entire data was flushed successfully to the kernel
+         * buffer. Returns `false` if all or part of the data was queued in user memory.`'drain'` will be emitted when the buffer is free again.
+         * @since v8.4.0
+         */
+        write(chunk: string | Uint8Array, callback?: (err: Error) => void): boolean;
+        write(chunk: string | Uint8Array, encoding: BufferEncoding, callback?: (err: Error) => void): boolean;
+        /**
+         * Sends a status `100 Continue` to the client, indicating that the request body
+         * should be sent. See the `'checkContinue'` event on `Http2Server` and`Http2SecureServer`.
+         * @since v8.4.0
+         */
+        writeContinue(): void;
+        /**
+         * Sends a response header to the request. The status code is a 3-digit HTTP
+         * status code, like `404`. The last argument, `headers`, are the response headers.
+         *
+         * Returns a reference to the `Http2ServerResponse`, so that calls can be chained.
+         *
+         * For compatibility with `HTTP/1`, a human-readable `statusMessage` may be
+         * passed as the second argument. However, because the `statusMessage` has no
+         * meaning within HTTP/2, the argument will have no effect and a process warning
+         * will be emitted.
+         *
+         * ```js
+         * const body = 'hello world';
+         * response.writeHead(200, {
+         *   'Content-Length': Buffer.byteLength(body),
+         *   'Content-Type': 'text/plain; charset=utf-8',
+         * });
+         * ```
+         *
+         * `Content-Length` is given in bytes not characters. The`Buffer.byteLength()` API may be used to determine the number of bytes in a
+         * given encoding. On outbound messages, Node.js does not check if Content-Length
+         * and the length of the body being transmitted are equal or not. However, when
+         * receiving messages, Node.js will automatically reject messages when the`Content-Length` does not match the actual payload size.
+         *
+         * This method may be called at most one time on a message before `response.end()` is called.
+         *
+         * If `response.write()` or `response.end()` are called before calling
+         * this, the implicit/mutable headers will be calculated and call this function.
+         *
+         * When headers have been set with `response.setHeader()`, they will be merged
+         * with any headers passed to `response.writeHead()`, with the headers passed
+         * to `response.writeHead()` given precedence.
+         *
+         * ```js
+         * // Returns content-type = text/plain
+         * const server = http2.createServer((req, res) => {
+         *   res.setHeader('Content-Type', 'text/html; charset=utf-8');
+         *   res.setHeader('X-Foo', 'bar');
+         *   res.writeHead(200, { 'Content-Type': 'text/plain; charset=utf-8' });
+         *   res.end('ok');
+         * });
+         * ```
+         *
+         * Attempting to set a header field name or value that contains invalid characters
+         * will result in a `TypeError` being thrown.
+         * @since v8.4.0
+         */
+        writeHead(statusCode: number, headers?: OutgoingHttpHeaders): this;
+        writeHead(statusCode: number, statusMessage: string, headers?: OutgoingHttpHeaders): this;
+        /**
+         * Call `http2stream.pushStream()` with the given headers, and wrap the
+         * given `Http2Stream` on a newly created `Http2ServerResponse` as the callback
+         * parameter if successful. When `Http2ServerRequest` is closed, the callback is
+         * called with an error `ERR_HTTP2_INVALID_STREAM`.
+         * @since v8.4.0
+         * @param headers An object describing the headers
+         * @param callback Called once `http2stream.pushStream()` is finished, or either when the attempt to create the pushed `Http2Stream` has failed or has been rejected, or the state of
+         * `Http2ServerRequest` is closed prior to calling the `http2stream.pushStream()` method
+         */
+        createPushResponse(headers: OutgoingHttpHeaders, callback: (err: Error | null, res: Http2ServerResponse) => void): void;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'drain', listener: () => void): this;
+        addListener(event: 'error', listener: (error: Error) => void): this;
+        addListener(event: 'finish', listener: () => void): this;
+        addListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        addListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'close'): boolean;
+        emit(event: 'drain'): boolean;
+        emit(event: 'error', error: Error): boolean;
+        emit(event: 'finish'): boolean;
+        emit(event: 'pipe', src: stream.Readable): boolean;
+        emit(event: 'unpipe', src: stream.Readable): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'drain', listener: () => void): this;
+        on(event: 'error', listener: (error: Error) => void): this;
+        on(event: 'finish', listener: () => void): this;
+        on(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        on(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'drain', listener: () => void): this;
+        once(event: 'error', listener: (error: Error) => void): this;
+        once(event: 'finish', listener: () => void): this;
+        once(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        once(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'drain', listener: () => void): this;
+        prependListener(event: 'error', listener: (error: Error) => void): this;
+        prependListener(event: 'finish', listener: () => void): this;
+        prependListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        prependListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'drain', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (error: Error) => void): this;
+        prependOnceListener(event: 'finish', listener: () => void): this;
+        prependOnceListener(event: 'pipe', listener: (src: stream.Readable) => void): this;
+        prependOnceListener(event: 'unpipe', listener: (src: stream.Readable) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    export namespace constants {
+        const NGHTTP2_SESSION_SERVER: number;
+        const NGHTTP2_SESSION_CLIENT: number;
+        const NGHTTP2_STREAM_STATE_IDLE: number;
+        const NGHTTP2_STREAM_STATE_OPEN: number;
+        const NGHTTP2_STREAM_STATE_RESERVED_LOCAL: number;
+        const NGHTTP2_STREAM_STATE_RESERVED_REMOTE: number;
+        const NGHTTP2_STREAM_STATE_HALF_CLOSED_LOCAL: number;
+        const NGHTTP2_STREAM_STATE_HALF_CLOSED_REMOTE: number;
+        const NGHTTP2_STREAM_STATE_CLOSED: number;
+        const NGHTTP2_NO_ERROR: number;
+        const NGHTTP2_PROTOCOL_ERROR: number;
+        const NGHTTP2_INTERNAL_ERROR: number;
+        const NGHTTP2_FLOW_CONTROL_ERROR: number;
+        const NGHTTP2_SETTINGS_TIMEOUT: number;
+        const NGHTTP2_STREAM_CLOSED: number;
+        const NGHTTP2_FRAME_SIZE_ERROR: number;
+        const NGHTTP2_REFUSED_STREAM: number;
+        const NGHTTP2_CANCEL: number;
+        const NGHTTP2_COMPRESSION_ERROR: number;
+        const NGHTTP2_CONNECT_ERROR: number;
+        const NGHTTP2_ENHANCE_YOUR_CALM: number;
+        const NGHTTP2_INADEQUATE_SECURITY: number;
+        const NGHTTP2_HTTP_1_1_REQUIRED: number;
+        const NGHTTP2_ERR_FRAME_SIZE_ERROR: number;
+        const NGHTTP2_FLAG_NONE: number;
+        const NGHTTP2_FLAG_END_STREAM: number;
+        const NGHTTP2_FLAG_END_HEADERS: number;
+        const NGHTTP2_FLAG_ACK: number;
+        const NGHTTP2_FLAG_PADDED: number;
+        const NGHTTP2_FLAG_PRIORITY: number;
+        const DEFAULT_SETTINGS_HEADER_TABLE_SIZE: number;
+        const DEFAULT_SETTINGS_ENABLE_PUSH: number;
+        const DEFAULT_SETTINGS_INITIAL_WINDOW_SIZE: number;
+        const DEFAULT_SETTINGS_MAX_FRAME_SIZE: number;
+        const MAX_MAX_FRAME_SIZE: number;
+        const MIN_MAX_FRAME_SIZE: number;
+        const MAX_INITIAL_WINDOW_SIZE: number;
+        const NGHTTP2_DEFAULT_WEIGHT: number;
+        const NGHTTP2_SETTINGS_HEADER_TABLE_SIZE: number;
+        const NGHTTP2_SETTINGS_ENABLE_PUSH: number;
+        const NGHTTP2_SETTINGS_MAX_CONCURRENT_STREAMS: number;
+        const NGHTTP2_SETTINGS_INITIAL_WINDOW_SIZE: number;
+        const NGHTTP2_SETTINGS_MAX_FRAME_SIZE: number;
+        const NGHTTP2_SETTINGS_MAX_HEADER_LIST_SIZE: number;
+        const PADDING_STRATEGY_NONE: number;
+        const PADDING_STRATEGY_MAX: number;
+        const PADDING_STRATEGY_CALLBACK: number;
+        const HTTP2_HEADER_STATUS: string;
+        const HTTP2_HEADER_METHOD: string;
+        const HTTP2_HEADER_AUTHORITY: string;
+        const HTTP2_HEADER_SCHEME: string;
+        const HTTP2_HEADER_PATH: string;
+        const HTTP2_HEADER_ACCEPT_CHARSET: string;
+        const HTTP2_HEADER_ACCEPT_ENCODING: string;
+        const HTTP2_HEADER_ACCEPT_LANGUAGE: string;
+        const HTTP2_HEADER_ACCEPT_RANGES: string;
+        const HTTP2_HEADER_ACCEPT: string;
+        const HTTP2_HEADER_ACCESS_CONTROL_ALLOW_ORIGIN: string;
+        const HTTP2_HEADER_AGE: string;
+        const HTTP2_HEADER_ALLOW: string;
+        const HTTP2_HEADER_AUTHORIZATION: string;
+        const HTTP2_HEADER_CACHE_CONTROL: string;
+        const HTTP2_HEADER_CONNECTION: string;
+        const HTTP2_HEADER_CONTENT_DISPOSITION: string;
+        const HTTP2_HEADER_CONTENT_ENCODING: string;
+        const HTTP2_HEADER_CONTENT_LANGUAGE: string;
+        const HTTP2_HEADER_CONTENT_LENGTH: string;
+        const HTTP2_HEADER_CONTENT_LOCATION: string;
+        const HTTP2_HEADER_CONTENT_MD5: string;
+        const HTTP2_HEADER_CONTENT_RANGE: string;
+        const HTTP2_HEADER_CONTENT_TYPE: string;
+        const HTTP2_HEADER_COOKIE: string;
+        const HTTP2_HEADER_DATE: string;
+        const HTTP2_HEADER_ETAG: string;
+        const HTTP2_HEADER_EXPECT: string;
+        const HTTP2_HEADER_EXPIRES: string;
+        const HTTP2_HEADER_FROM: string;
+        const HTTP2_HEADER_HOST: string;
+        const HTTP2_HEADER_IF_MATCH: string;
+        const HTTP2_HEADER_IF_MODIFIED_SINCE: string;
+        const HTTP2_HEADER_IF_NONE_MATCH: string;
+        const HTTP2_HEADER_IF_RANGE: string;
+        const HTTP2_HEADER_IF_UNMODIFIED_SINCE: string;
+        const HTTP2_HEADER_LAST_MODIFIED: string;
+        const HTTP2_HEADER_LINK: string;
+        const HTTP2_HEADER_LOCATION: string;
+        const HTTP2_HEADER_MAX_FORWARDS: string;
+        const HTTP2_HEADER_PREFER: string;
+        const HTTP2_HEADER_PROXY_AUTHENTICATE: string;
+        const HTTP2_HEADER_PROXY_AUTHORIZATION: string;
+        const HTTP2_HEADER_RANGE: string;
+        const HTTP2_HEADER_REFERER: string;
+        const HTTP2_HEADER_REFRESH: string;
+        const HTTP2_HEADER_RETRY_AFTER: string;
+        const HTTP2_HEADER_SERVER: string;
+        const HTTP2_HEADER_SET_COOKIE: string;
+        const HTTP2_HEADER_STRICT_TRANSPORT_SECURITY: string;
+        const HTTP2_HEADER_TRANSFER_ENCODING: string;
+        const HTTP2_HEADER_TE: string;
+        const HTTP2_HEADER_UPGRADE: string;
+        const HTTP2_HEADER_USER_AGENT: string;
+        const HTTP2_HEADER_VARY: string;
+        const HTTP2_HEADER_VIA: string;
+        const HTTP2_HEADER_WWW_AUTHENTICATE: string;
+        const HTTP2_HEADER_HTTP2_SETTINGS: string;
+        const HTTP2_HEADER_KEEP_ALIVE: string;
+        const HTTP2_HEADER_PROXY_CONNECTION: string;
+        const HTTP2_METHOD_ACL: string;
+        const HTTP2_METHOD_BASELINE_CONTROL: string;
+        const HTTP2_METHOD_BIND: string;
+        const HTTP2_METHOD_CHECKIN: string;
+        const HTTP2_METHOD_CHECKOUT: string;
+        const HTTP2_METHOD_CONNECT: string;
+        const HTTP2_METHOD_COPY: string;
+        const HTTP2_METHOD_DELETE: string;
+        const HTTP2_METHOD_GET: string;
+        const HTTP2_METHOD_HEAD: string;
+        const HTTP2_METHOD_LABEL: string;
+        const HTTP2_METHOD_LINK: string;
+        const HTTP2_METHOD_LOCK: string;
+        const HTTP2_METHOD_MERGE: string;
+        const HTTP2_METHOD_MKACTIVITY: string;
+        const HTTP2_METHOD_MKCALENDAR: string;
+        const HTTP2_METHOD_MKCOL: string;
+        const HTTP2_METHOD_MKREDIRECTREF: string;
+        const HTTP2_METHOD_MKWORKSPACE: string;
+        const HTTP2_METHOD_MOVE: string;
+        const HTTP2_METHOD_OPTIONS: string;
+        const HTTP2_METHOD_ORDERPATCH: string;
+        const HTTP2_METHOD_PATCH: string;
+        const HTTP2_METHOD_POST: string;
+        const HTTP2_METHOD_PRI: string;
+        const HTTP2_METHOD_PROPFIND: string;
+        const HTTP2_METHOD_PROPPATCH: string;
+        const HTTP2_METHOD_PUT: string;
+        const HTTP2_METHOD_REBIND: string;
+        const HTTP2_METHOD_REPORT: string;
+        const HTTP2_METHOD_SEARCH: string;
+        const HTTP2_METHOD_TRACE: string;
+        const HTTP2_METHOD_UNBIND: string;
+        const HTTP2_METHOD_UNCHECKOUT: string;
+        const HTTP2_METHOD_UNLINK: string;
+        const HTTP2_METHOD_UNLOCK: string;
+        const HTTP2_METHOD_UPDATE: string;
+        const HTTP2_METHOD_UPDATEREDIRECTREF: string;
+        const HTTP2_METHOD_VERSION_CONTROL: string;
+        const HTTP_STATUS_CONTINUE: number;
+        const HTTP_STATUS_SWITCHING_PROTOCOLS: number;
+        const HTTP_STATUS_PROCESSING: number;
+        const HTTP_STATUS_OK: number;
+        const HTTP_STATUS_CREATED: number;
+        const HTTP_STATUS_ACCEPTED: number;
+        const HTTP_STATUS_NON_AUTHORITATIVE_INFORMATION: number;
+        const HTTP_STATUS_NO_CONTENT: number;
+        const HTTP_STATUS_RESET_CONTENT: number;
+        const HTTP_STATUS_PARTIAL_CONTENT: number;
+        const HTTP_STATUS_MULTI_STATUS: number;
+        const HTTP_STATUS_ALREADY_REPORTED: number;
+        const HTTP_STATUS_IM_USED: number;
+        const HTTP_STATUS_MULTIPLE_CHOICES: number;
+        const HTTP_STATUS_MOVED_PERMANENTLY: number;
+        const HTTP_STATUS_FOUND: number;
+        const HTTP_STATUS_SEE_OTHER: number;
+        const HTTP_STATUS_NOT_MODIFIED: number;
+        const HTTP_STATUS_USE_PROXY: number;
+        const HTTP_STATUS_TEMPORARY_REDIRECT: number;
+        const HTTP_STATUS_PERMANENT_REDIRECT: number;
+        const HTTP_STATUS_BAD_REQUEST: number;
+        const HTTP_STATUS_UNAUTHORIZED: number;
+        const HTTP_STATUS_PAYMENT_REQUIRED: number;
+        const HTTP_STATUS_FORBIDDEN: number;
+        const HTTP_STATUS_NOT_FOUND: number;
+        const HTTP_STATUS_METHOD_NOT_ALLOWED: number;
+        const HTTP_STATUS_NOT_ACCEPTABLE: number;
+        const HTTP_STATUS_PROXY_AUTHENTICATION_REQUIRED: number;
+        const HTTP_STATUS_REQUEST_TIMEOUT: number;
+        const HTTP_STATUS_CONFLICT: number;
+        const HTTP_STATUS_GONE: number;
+        const HTTP_STATUS_LENGTH_REQUIRED: number;
+        const HTTP_STATUS_PRECONDITION_FAILED: number;
+        const HTTP_STATUS_PAYLOAD_TOO_LARGE: number;
+        const HTTP_STATUS_URI_TOO_LONG: number;
+        const HTTP_STATUS_UNSUPPORTED_MEDIA_TYPE: number;
+        const HTTP_STATUS_RANGE_NOT_SATISFIABLE: number;
+        const HTTP_STATUS_EXPECTATION_FAILED: number;
+        const HTTP_STATUS_TEAPOT: number;
+        const HTTP_STATUS_MISDIRECTED_REQUEST: number;
+        const HTTP_STATUS_UNPROCESSABLE_ENTITY: number;
+        const HTTP_STATUS_LOCKED: number;
+        const HTTP_STATUS_FAILED_DEPENDENCY: number;
+        const HTTP_STATUS_UNORDERED_COLLECTION: number;
+        const HTTP_STATUS_UPGRADE_REQUIRED: number;
+        const HTTP_STATUS_PRECONDITION_REQUIRED: number;
+        const HTTP_STATUS_TOO_MANY_REQUESTS: number;
+        const HTTP_STATUS_REQUEST_HEADER_FIELDS_TOO_LARGE: number;
+        const HTTP_STATUS_UNAVAILABLE_FOR_LEGAL_REASONS: number;
+        const HTTP_STATUS_INTERNAL_SERVER_ERROR: number;
+        const HTTP_STATUS_NOT_IMPLEMENTED: number;
+        const HTTP_STATUS_BAD_GATEWAY: number;
+        const HTTP_STATUS_SERVICE_UNAVAILABLE: number;
+        const HTTP_STATUS_GATEWAY_TIMEOUT: number;
+        const HTTP_STATUS_HTTP_VERSION_NOT_SUPPORTED: number;
+        const HTTP_STATUS_VARIANT_ALSO_NEGOTIATES: number;
+        const HTTP_STATUS_INSUFFICIENT_STORAGE: number;
+        const HTTP_STATUS_LOOP_DETECTED: number;
+        const HTTP_STATUS_BANDWIDTH_LIMIT_EXCEEDED: number;
+        const HTTP_STATUS_NOT_EXTENDED: number;
+        const HTTP_STATUS_NETWORK_AUTHENTICATION_REQUIRED: number;
+    }
+    /**
+     * This symbol can be set as a property on the HTTP/2 headers object with
+     * an array value in order to provide a list of headers considered sensitive.
+     */
+    export const sensitiveHeaders: symbol;
+    /**
+     * Returns an object containing the default settings for an `Http2Session`instance. This method returns a new object instance every time it is called
+     * so instances returned may be safely modified for use.
+     * @since v8.4.0
+     */
+    export function getDefaultSettings(): Settings;
+    /**
+     * Returns a `Buffer` instance containing serialized representation of the given
+     * HTTP/2 settings as specified in the [HTTP/2](https://tools.ietf.org/html/rfc7540) specification. This is intended
+     * for use with the `HTTP2-Settings` header field.
+     *
+     * ```js
+     * const http2 = require('http2');
+     *
+     * const packed = http2.getPackedSettings({ enablePush: false });
+     *
+     * console.log(packed.toString('base64'));
+     * // Prints: AAIAAAAA
+     * ```
+     * @since v8.4.0
+     */
+    export function getPackedSettings(settings: Settings): Buffer;
+    /**
+     * Returns a `HTTP/2 Settings Object` containing the deserialized settings from
+     * the given `Buffer` as generated by `http2.getPackedSettings()`.
+     * @since v8.4.0
+     * @param buf The packed settings.
+     */
+    export function getUnpackedSettings(buf: Uint8Array): Settings;
+    /**
+     * Returns a `net.Server` instance that creates and manages `Http2Session`instances.
+     *
+     * Since there are no browsers known that support [unencrypted HTTP/2](https://http2.github.io/faq/#does-http2-require-encryption), the use of {@link createSecureServer} is necessary when
+     * communicating
+     * with browser clients.
+     *
+     * ```js
+     * const http2 = require('http2');
+     *
+     * // Create an unencrypted HTTP/2 server.
+     * // Since there are no browsers known that support
+     * // unencrypted HTTP/2, the use of `http2.createSecureServer()`
+     * // is necessary when communicating with browser clients.
+     * const server = http2.createServer();
+     *
+     * server.on('stream', (stream, headers) => {
+     *   stream.respond({
+     *     'content-type': 'text/html; charset=utf-8',
+     *     ':status': 200
+     *   });
+     *   stream.end('<h1>Hello World</h1>');
+     * });
+     *
+     * server.listen(80);
+     * ```
+     * @since v8.4.0
+     * @param onRequestHandler See `Compatibility API`
+     */
+    export function createServer(onRequestHandler?: (request: Http2ServerRequest, response: Http2ServerResponse) => void): Http2Server;
+    export function createServer(options: ServerOptions, onRequestHandler?: (request: Http2ServerRequest, response: Http2ServerResponse) => void): Http2Server;
+    /**
+     * Returns a `tls.Server` instance that creates and manages `Http2Session`instances.
+     *
+     * ```js
+     * const http2 = require('http2');
+     * const fs = require('fs');
+     *
+     * const options = {
+     *   key: fs.readFileSync('server-key.pem'),
+     *   cert: fs.readFileSync('server-cert.pem')
+     * };
+     *
+     * // Create a secure HTTP/2 server
+     * const server = http2.createSecureServer(options);
+     *
+     * server.on('stream', (stream, headers) => {
+     *   stream.respond({
+     *     'content-type': 'text/html; charset=utf-8',
+     *     ':status': 200
+     *   });
+     *   stream.end('<h1>Hello World</h1>');
+     * });
+     *
+     * server.listen(80);
+     * ```
+     * @since v8.4.0
+     * @param onRequestHandler See `Compatibility API`
+     */
+    export function createSecureServer(onRequestHandler?: (request: Http2ServerRequest, response: Http2ServerResponse) => void): Http2SecureServer;
+    export function createSecureServer(options: SecureServerOptions, onRequestHandler?: (request: Http2ServerRequest, response: Http2ServerResponse) => void): Http2SecureServer;
+    /**
+     * Returns a `ClientHttp2Session` instance.
+     *
+     * ```js
+     * const http2 = require('http2');
+     * const client = http2.connect('https://localhost:1234');
+     *
+     * // Use the client
+     *
+     * client.close();
+     * ```
+     * @since v8.4.0
+     * @param authority The remote HTTP/2 server to connect to. This must be in the form of a minimal, valid URL with the `http://` or `https://` prefix, host name, and IP port (if a non-default port
+     * is used). Userinfo (user ID and password), path, querystring, and fragment details in the URL will be ignored.
+     * @param listener Will be registered as a one-time listener of the {@link 'connect'} event.
+     */
+    export function connect(authority: string | url.URL, listener: (session: ClientHttp2Session, socket: net.Socket | tls.TLSSocket) => void): ClientHttp2Session;
+    export function connect(
+        authority: string | url.URL,
+        options?: ClientSessionOptions | SecureClientSessionOptions,
+        listener?: (session: ClientHttp2Session, socket: net.Socket | tls.TLSSocket) => void
+    ): ClientHttp2Session;
+}
+declare module 'node:http2' {
+    export * from 'http2';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/https.d.ts b/igv_component/node_modules/@types/node/ts4.8/https.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..aae4a9584577292f328e90cf8f085c29bc9d5819
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/https.d.ts
@@ -0,0 +1,541 @@
+/**
+ * HTTPS is the HTTP protocol over TLS/SSL. In Node.js this is implemented as a
+ * separate module.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/https.js)
+ */
+declare module 'https' {
+    import { Duplex } from 'node:stream';
+    import * as tls from 'node:tls';
+    import * as http from 'node:http';
+    import { URL } from 'node:url';
+    type ServerOptions<
+        Request extends typeof http.IncomingMessage = typeof http.IncomingMessage,
+        Response extends typeof http.ServerResponse = typeof http.ServerResponse,
+    > = tls.SecureContextOptions & tls.TlsOptions & http.ServerOptions<Request, Response>;
+    type RequestOptions = http.RequestOptions &
+        tls.SecureContextOptions & {
+            rejectUnauthorized?: boolean | undefined; // Defaults to true
+            servername?: string | undefined; // SNI TLS Extension
+        };
+    interface AgentOptions extends http.AgentOptions, tls.ConnectionOptions {
+        rejectUnauthorized?: boolean | undefined;
+        maxCachedSessions?: number | undefined;
+    }
+    /**
+     * An `Agent` object for HTTPS similar to `http.Agent`. See {@link request} for more information.
+     * @since v0.4.5
+     */
+    class Agent extends http.Agent {
+        constructor(options?: AgentOptions);
+        options: AgentOptions;
+    }
+    interface Server<
+        Request extends typeof http.IncomingMessage = typeof http.IncomingMessage,
+        Response extends typeof http.ServerResponse = typeof http.ServerResponse,
+    > extends http.Server<Request, Response> {}
+    /**
+     * See `http.Server` for more information.
+     * @since v0.3.4
+     */
+    class Server<
+        Request extends typeof http.IncomingMessage = typeof http.IncomingMessage,
+        Response extends typeof http.ServerResponse = typeof http.ServerResponse,
+    > extends tls.Server {
+        constructor(requestListener?: http.RequestListener<Request, Response>);
+        constructor(
+            options: ServerOptions<Request, Response>,
+            requestListener?: http.RequestListener<Request, Response>,
+        );
+        /**
+         * Closes all connections connected to this server.
+         * @since v18.2.0
+         */
+        closeAllConnections(): void;
+        /**
+         * Closes all connections connected to this server which are not sending a request or waiting for a response.
+         * @since v18.2.0
+         */
+        closeIdleConnections(): void;
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'keylog', listener: (line: Buffer, tlsSocket: tls.TLSSocket) => void): this;
+        addListener(
+            event: 'newSession',
+            listener: (sessionId: Buffer, sessionData: Buffer, callback: (err: Error, resp: Buffer) => void) => void,
+        ): this;
+        addListener(
+            event: 'OCSPRequest',
+            listener: (
+                certificate: Buffer,
+                issuer: Buffer,
+                callback: (err: Error | null, resp: Buffer) => void,
+            ) => void,
+        ): this;
+        addListener(
+            event: 'resumeSession',
+            listener: (sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void) => void,
+        ): this;
+        addListener(event: 'secureConnection', listener: (tlsSocket: tls.TLSSocket) => void): this;
+        addListener(event: 'tlsClientError', listener: (err: Error, tlsSocket: tls.TLSSocket) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'connection', listener: (socket: Duplex) => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'listening', listener: () => void): this;
+        addListener(event: 'checkContinue', listener: http.RequestListener<Request, Response>): this;
+        addListener(event: 'checkExpectation', listener: http.RequestListener<Request, Response>): this;
+        addListener(event: 'clientError', listener: (err: Error, socket: Duplex) => void): this;
+        addListener(
+            event: 'connect',
+            listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void,
+        ): this;
+        addListener(event: 'request', listener: http.RequestListener<Request, Response>): this;
+        addListener(
+            event: 'upgrade',
+            listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void,
+        ): this;
+        emit(event: string, ...args: any[]): boolean;
+        emit(event: 'keylog', line: Buffer, tlsSocket: tls.TLSSocket): boolean;
+        emit(
+            event: 'newSession',
+            sessionId: Buffer,
+            sessionData: Buffer,
+            callback: (err: Error, resp: Buffer) => void,
+        ): boolean;
+        emit(
+            event: 'OCSPRequest',
+            certificate: Buffer,
+            issuer: Buffer,
+            callback: (err: Error | null, resp: Buffer) => void,
+        ): boolean;
+        emit(event: 'resumeSession', sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void): boolean;
+        emit(event: 'secureConnection', tlsSocket: tls.TLSSocket): boolean;
+        emit(event: 'tlsClientError', err: Error, tlsSocket: tls.TLSSocket): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'connection', socket: Duplex): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'listening'): boolean;
+        emit(
+            event: 'checkContinue',
+            req: InstanceType<Request>,
+            res: InstanceType<Response> & { req: InstanceType<Request> },
+        ): boolean;
+        emit(
+            event: 'checkExpectation',
+            req: InstanceType<Request>,
+            res: InstanceType<Response> & { req: InstanceType<Request> },
+        ): boolean;
+        emit(event: 'clientError', err: Error, socket: Duplex): boolean;
+        emit(event: 'connect', req: InstanceType<Request>, socket: Duplex, head: Buffer): boolean;
+        emit(
+            event: 'request',
+            req: InstanceType<Request>,
+            res: InstanceType<Response> & { req: InstanceType<Request> },
+        ): boolean;
+        emit(event: 'upgrade', req: InstanceType<Request>, socket: Duplex, head: Buffer): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'keylog', listener: (line: Buffer, tlsSocket: tls.TLSSocket) => void): this;
+        on(
+            event: 'newSession',
+            listener: (sessionId: Buffer, sessionData: Buffer, callback: (err: Error, resp: Buffer) => void) => void,
+        ): this;
+        on(
+            event: 'OCSPRequest',
+            listener: (
+                certificate: Buffer,
+                issuer: Buffer,
+                callback: (err: Error | null, resp: Buffer) => void,
+            ) => void,
+        ): this;
+        on(
+            event: 'resumeSession',
+            listener: (sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void) => void,
+        ): this;
+        on(event: 'secureConnection', listener: (tlsSocket: tls.TLSSocket) => void): this;
+        on(event: 'tlsClientError', listener: (err: Error, tlsSocket: tls.TLSSocket) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'connection', listener: (socket: Duplex) => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'listening', listener: () => void): this;
+        on(event: 'checkContinue', listener: http.RequestListener<Request, Response>): this;
+        on(event: 'checkExpectation', listener: http.RequestListener<Request, Response>): this;
+        on(event: 'clientError', listener: (err: Error, socket: Duplex) => void): this;
+        on(event: 'connect', listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void): this;
+        on(event: 'request', listener: http.RequestListener<Request, Response>): this;
+        on(event: 'upgrade', listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'keylog', listener: (line: Buffer, tlsSocket: tls.TLSSocket) => void): this;
+        once(
+            event: 'newSession',
+            listener: (sessionId: Buffer, sessionData: Buffer, callback: (err: Error, resp: Buffer) => void) => void,
+        ): this;
+        once(
+            event: 'OCSPRequest',
+            listener: (
+                certificate: Buffer,
+                issuer: Buffer,
+                callback: (err: Error | null, resp: Buffer) => void,
+            ) => void,
+        ): this;
+        once(
+            event: 'resumeSession',
+            listener: (sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void) => void,
+        ): this;
+        once(event: 'secureConnection', listener: (tlsSocket: tls.TLSSocket) => void): this;
+        once(event: 'tlsClientError', listener: (err: Error, tlsSocket: tls.TLSSocket) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'connection', listener: (socket: Duplex) => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'listening', listener: () => void): this;
+        once(event: 'checkContinue', listener: http.RequestListener<Request, Response>): this;
+        once(event: 'checkExpectation', listener: http.RequestListener<Request, Response>): this;
+        once(event: 'clientError', listener: (err: Error, socket: Duplex) => void): this;
+        once(event: 'connect', listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void): this;
+        once(event: 'request', listener: http.RequestListener<Request, Response>): this;
+        once(event: 'upgrade', listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'keylog', listener: (line: Buffer, tlsSocket: tls.TLSSocket) => void): this;
+        prependListener(
+            event: 'newSession',
+            listener: (sessionId: Buffer, sessionData: Buffer, callback: (err: Error, resp: Buffer) => void) => void,
+        ): this;
+        prependListener(
+            event: 'OCSPRequest',
+            listener: (
+                certificate: Buffer,
+                issuer: Buffer,
+                callback: (err: Error | null, resp: Buffer) => void,
+            ) => void,
+        ): this;
+        prependListener(
+            event: 'resumeSession',
+            listener: (sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void) => void,
+        ): this;
+        prependListener(event: 'secureConnection', listener: (tlsSocket: tls.TLSSocket) => void): this;
+        prependListener(event: 'tlsClientError', listener: (err: Error, tlsSocket: tls.TLSSocket) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'connection', listener: (socket: Duplex) => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'listening', listener: () => void): this;
+        prependListener(event: 'checkContinue', listener: http.RequestListener<Request, Response>): this;
+        prependListener(event: 'checkExpectation', listener: http.RequestListener<Request, Response>): this;
+        prependListener(event: 'clientError', listener: (err: Error, socket: Duplex) => void): this;
+        prependListener(
+            event: 'connect',
+            listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void,
+        ): this;
+        prependListener(event: 'request', listener: http.RequestListener<Request, Response>): this;
+        prependListener(
+            event: 'upgrade',
+            listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void,
+        ): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'keylog', listener: (line: Buffer, tlsSocket: tls.TLSSocket) => void): this;
+        prependOnceListener(
+            event: 'newSession',
+            listener: (sessionId: Buffer, sessionData: Buffer, callback: (err: Error, resp: Buffer) => void) => void,
+        ): this;
+        prependOnceListener(
+            event: 'OCSPRequest',
+            listener: (
+                certificate: Buffer,
+                issuer: Buffer,
+                callback: (err: Error | null, resp: Buffer) => void,
+            ) => void,
+        ): this;
+        prependOnceListener(
+            event: 'resumeSession',
+            listener: (sessionId: Buffer, callback: (err: Error, sessionData: Buffer) => void) => void,
+        ): this;
+        prependOnceListener(event: 'secureConnection', listener: (tlsSocket: tls.TLSSocket) => void): this;
+        prependOnceListener(event: 'tlsClientError', listener: (err: Error, tlsSocket: tls.TLSSocket) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'connection', listener: (socket: Duplex) => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'listening', listener: () => void): this;
+        prependOnceListener(event: 'checkContinue', listener: http.RequestListener<Request, Response>): this;
+        prependOnceListener(event: 'checkExpectation', listener: http.RequestListener<Request, Response>): this;
+        prependOnceListener(event: 'clientError', listener: (err: Error, socket: Duplex) => void): this;
+        prependOnceListener(
+            event: 'connect',
+            listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void,
+        ): this;
+        prependOnceListener(event: 'request', listener: http.RequestListener<Request, Response>): this;
+        prependOnceListener(
+            event: 'upgrade',
+            listener: (req: InstanceType<Request>, socket: Duplex, head: Buffer) => void,
+        ): this;
+    }
+    /**
+     * ```js
+     * // curl -k https://localhost:8000/
+     * const https = require('https');
+     * const fs = require('fs');
+     *
+     * const options = {
+     *   key: fs.readFileSync('test/fixtures/keys/agent2-key.pem'),
+     *   cert: fs.readFileSync('test/fixtures/keys/agent2-cert.pem')
+     * };
+     *
+     * https.createServer(options, (req, res) => {
+     *   res.writeHead(200);
+     *   res.end('hello world\n');
+     * }).listen(8000);
+     * ```
+     *
+     * Or
+     *
+     * ```js
+     * const https = require('https');
+     * const fs = require('fs');
+     *
+     * const options = {
+     *   pfx: fs.readFileSync('test/fixtures/test_cert.pfx'),
+     *   passphrase: 'sample'
+     * };
+     *
+     * https.createServer(options, (req, res) => {
+     *   res.writeHead(200);
+     *   res.end('hello world\n');
+     * }).listen(8000);
+     * ```
+     * @since v0.3.4
+     * @param options Accepts `options` from `createServer`, `createSecureContext` and `createServer`.
+     * @param requestListener A listener to be added to the `'request'` event.
+     */
+    function createServer<
+        Request extends typeof http.IncomingMessage = typeof http.IncomingMessage,
+        Response extends typeof http.ServerResponse = typeof http.ServerResponse,
+    >(requestListener?: http.RequestListener<Request, Response>): Server<Request, Response>;
+    function createServer<
+        Request extends typeof http.IncomingMessage = typeof http.IncomingMessage,
+        Response extends typeof http.ServerResponse = typeof http.ServerResponse,
+    >(
+        options: ServerOptions<Request, Response>,
+        requestListener?: http.RequestListener<Request, Response>,
+    ): Server<Request, Response>;
+    /**
+     * Makes a request to a secure web server.
+     *
+     * The following additional `options` from `tls.connect()` are also accepted:`ca`, `cert`, `ciphers`, `clientCertEngine`, `crl`, `dhparam`, `ecdhCurve`,`honorCipherOrder`, `key`, `passphrase`,
+     * `pfx`, `rejectUnauthorized`,`secureOptions`, `secureProtocol`, `servername`, `sessionIdContext`,`highWaterMark`.
+     *
+     * `options` can be an object, a string, or a `URL` object. If `options` is a
+     * string, it is automatically parsed with `new URL()`. If it is a `URL` object, it will be automatically converted to an ordinary `options` object.
+     *
+     * `https.request()` returns an instance of the `http.ClientRequest` class. The `ClientRequest` instance is a writable stream. If one needs to
+     * upload a file with a POST request, then write to the `ClientRequest` object.
+     *
+     * ```js
+     * const https = require('https');
+     *
+     * const options = {
+     *   hostname: 'encrypted.google.com',
+     *   port: 443,
+     *   path: '/',
+     *   method: 'GET'
+     * };
+     *
+     * const req = https.request(options, (res) => {
+     *   console.log('statusCode:', res.statusCode);
+     *   console.log('headers:', res.headers);
+     *
+     *   res.on('data', (d) => {
+     *     process.stdout.write(d);
+     *   });
+     * });
+     *
+     * req.on('error', (e) => {
+     *   console.error(e);
+     * });
+     * req.end();
+     * ```
+     *
+     * Example using options from `tls.connect()`:
+     *
+     * ```js
+     * const options = {
+     *   hostname: 'encrypted.google.com',
+     *   port: 443,
+     *   path: '/',
+     *   method: 'GET',
+     *   key: fs.readFileSync('test/fixtures/keys/agent2-key.pem'),
+     *   cert: fs.readFileSync('test/fixtures/keys/agent2-cert.pem')
+     * };
+     * options.agent = new https.Agent(options);
+     *
+     * const req = https.request(options, (res) => {
+     *   // ...
+     * });
+     * ```
+     *
+     * Alternatively, opt out of connection pooling by not using an `Agent`.
+     *
+     * ```js
+     * const options = {
+     *   hostname: 'encrypted.google.com',
+     *   port: 443,
+     *   path: '/',
+     *   method: 'GET',
+     *   key: fs.readFileSync('test/fixtures/keys/agent2-key.pem'),
+     *   cert: fs.readFileSync('test/fixtures/keys/agent2-cert.pem'),
+     *   agent: false
+     * };
+     *
+     * const req = https.request(options, (res) => {
+     *   // ...
+     * });
+     * ```
+     *
+     * Example using a `URL` as `options`:
+     *
+     * ```js
+     * const options = new URL('https://abc:xyz@example.com');
+     *
+     * const req = https.request(options, (res) => {
+     *   // ...
+     * });
+     * ```
+     *
+     * Example pinning on certificate fingerprint, or the public key (similar to`pin-sha256`):
+     *
+     * ```js
+     * const tls = require('tls');
+     * const https = require('https');
+     * const crypto = require('crypto');
+     *
+     * function sha256(s) {
+     *   return crypto.createHash('sha256').update(s).digest('base64');
+     * }
+     * const options = {
+     *   hostname: 'github.com',
+     *   port: 443,
+     *   path: '/',
+     *   method: 'GET',
+     *   checkServerIdentity: function(host, cert) {
+     *     // Make sure the certificate is issued to the host we are connected to
+     *     const err = tls.checkServerIdentity(host, cert);
+     *     if (err) {
+     *       return err;
+     *     }
+     *
+     *     // Pin the public key, similar to HPKP pin-sha25 pinning
+     *     const pubkey256 = 'pL1+qb9HTMRZJmuC/bB/ZI9d302BYrrqiVuRyW+DGrU=';
+     *     if (sha256(cert.pubkey) !== pubkey256) {
+     *       const msg = 'Certificate verification error: ' +
+     *         `The public key of '${cert.subject.CN}' ` +
+     *         'does not match our pinned fingerprint';
+     *       return new Error(msg);
+     *     }
+     *
+     *     // Pin the exact certificate, rather than the pub key
+     *     const cert256 = '25:FE:39:32:D9:63:8C:8A:FC:A1:9A:29:87:' +
+     *       'D8:3E:4C:1D:98:DB:71:E4:1A:48:03:98:EA:22:6A:BD:8B:93:16';
+     *     if (cert.fingerprint256 !== cert256) {
+     *       const msg = 'Certificate verification error: ' +
+     *         `The certificate of '${cert.subject.CN}' ` +
+     *         'does not match our pinned fingerprint';
+     *       return new Error(msg);
+     *     }
+     *
+     *     // This loop is informational only.
+     *     // Print the certificate and public key fingerprints of all certs in the
+     *     // chain. Its common to pin the public key of the issuer on the public
+     *     // internet, while pinning the public key of the service in sensitive
+     *     // environments.
+     *     do {
+     *       console.log('Subject Common Name:', cert.subject.CN);
+     *       console.log('  Certificate SHA256 fingerprint:', cert.fingerprint256);
+     *
+     *       hash = crypto.createHash('sha256');
+     *       console.log('  Public key ping-sha256:', sha256(cert.pubkey));
+     *
+     *       lastprint256 = cert.fingerprint256;
+     *       cert = cert.issuerCertificate;
+     *     } while (cert.fingerprint256 !== lastprint256);
+     *
+     *   },
+     * };
+     *
+     * options.agent = new https.Agent(options);
+     * const req = https.request(options, (res) => {
+     *   console.log('All OK. Server matched our pinned cert or public key');
+     *   console.log('statusCode:', res.statusCode);
+     *   // Print the HPKP values
+     *   console.log('headers:', res.headers['public-key-pins']);
+     *
+     *   res.on('data', (d) => {});
+     * });
+     *
+     * req.on('error', (e) => {
+     *   console.error(e.message);
+     * });
+     * req.end();
+     * ```
+     *
+     * Outputs for example:
+     *
+     * ```text
+     * Subject Common Name: github.com
+     *   Certificate SHA256 fingerprint: 25:FE:39:32:D9:63:8C:8A:FC:A1:9A:29:87:D8:3E:4C:1D:98:DB:71:E4:1A:48:03:98:EA:22:6A:BD:8B:93:16
+     *   Public key ping-sha256: pL1+qb9HTMRZJmuC/bB/ZI9d302BYrrqiVuRyW+DGrU=
+     * Subject Common Name: DigiCert SHA2 Extended Validation Server CA
+     *   Certificate SHA256 fingerprint: 40:3E:06:2A:26:53:05:91:13:28:5B:AF:80:A0:D4:AE:42:2C:84:8C:9F:78:FA:D0:1F:C9:4B:C5:B8:7F:EF:1A
+     *   Public key ping-sha256: RRM1dGqnDFsCJXBTHky16vi1obOlCgFFn/yOhI/y+ho=
+     * Subject Common Name: DigiCert High Assurance EV Root CA
+     *   Certificate SHA256 fingerprint: 74:31:E5:F4:C3:C1:CE:46:90:77:4F:0B:61:E0:54:40:88:3B:A9:A0:1E:D0:0B:A6:AB:D7:80:6E:D3:B1:18:CF
+     *   Public key ping-sha256: WoiWRyIOVNa9ihaBciRSC7XHjliYS9VwUGOIud4PB18=
+     * All OK. Server matched our pinned cert or public key
+     * statusCode: 200
+     * headers: max-age=0; pin-sha256="WoiWRyIOVNa9ihaBciRSC7XHjliYS9VwUGOIud4PB18="; pin-sha256="RRM1dGqnDFsCJXBTHky16vi1obOlCgFFn/yOhI/y+ho=";
+     * pin-sha256="k2v657xBsOVe1PQRwOsHsw3bsGT2VzIqz5K+59sNQws="; pin-sha256="K87oWBWM9UZfyddvDfoxL+8lpNyoUB2ptGtn0fv6G2Q="; pin-sha256="IQBnNBEiFuhj+8x6X8XLgh01V9Ic5/V3IRQLNFFc7v4=";
+     * pin-sha256="iie1VXtL7HzAMF+/PVPR9xzT80kQxdZeJ+zduCB3uj0="; pin-sha256="LvRiGEjRqfzurezaWuj8Wie2gyHMrW5Q06LspMnox7A="; includeSubDomains
+     * ```
+     * @since v0.3.6
+     * @param options Accepts all `options` from `request`, with some differences in default values:
+     */
+    function request(
+        options: RequestOptions | string | URL,
+        callback?: (res: http.IncomingMessage) => void,
+    ): http.ClientRequest;
+    function request(
+        url: string | URL,
+        options: RequestOptions,
+        callback?: (res: http.IncomingMessage) => void,
+    ): http.ClientRequest;
+    /**
+     * Like `http.get()` but for HTTPS.
+     *
+     * `options` can be an object, a string, or a `URL` object. If `options` is a
+     * string, it is automatically parsed with `new URL()`. If it is a `URL` object, it will be automatically converted to an ordinary `options` object.
+     *
+     * ```js
+     * const https = require('https');
+     *
+     * https.get('https://encrypted.google.com/', (res) => {
+     *   console.log('statusCode:', res.statusCode);
+     *   console.log('headers:', res.headers);
+     *
+     *   res.on('data', (d) => {
+     *     process.stdout.write(d);
+     *   });
+     *
+     * }).on('error', (e) => {
+     *   console.error(e);
+     * });
+     * ```
+     * @since v0.3.6
+     * @param options Accepts the same `options` as {@link request}, with the `method` always set to `GET`.
+     */
+    function get(
+        options: RequestOptions | string | URL,
+        callback?: (res: http.IncomingMessage) => void,
+    ): http.ClientRequest;
+    function get(
+        url: string | URL,
+        options: RequestOptions,
+        callback?: (res: http.IncomingMessage) => void,
+    ): http.ClientRequest;
+    let globalAgent: Agent;
+}
+declare module 'node:https' {
+    export * from 'https';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/index.d.ts b/igv_component/node_modules/@types/node/ts4.8/index.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2faf25e1ff620d81d089cb5cfe2e7e4434db5bb8
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/index.d.ts
@@ -0,0 +1,87 @@
+/**
+ * License for programmatically and manually incorporated
+ * documentation aka. `JSDoc` from https://github.com/nodejs/node/tree/master/doc
+ *
+ * Copyright Node.js contributors. All rights reserved.
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to
+ * deal in the Software without restriction, including without limitation the
+ * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
+ * sell copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+ * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
+ * IN THE SOFTWARE.
+ */
+
+// NOTE: These definitions support NodeJS and TypeScript 4.8 and earlier.
+
+// Reference required types from the default lib:
+/// <reference lib="es2020" />
+/// <reference lib="esnext.asynciterable" />
+/// <reference lib="esnext.intl" />
+/// <reference lib="esnext.bigint" />
+
+// Base definitions for all NodeJS modules that are not specific to any version of TypeScript:
+/// <reference path="assert.d.ts" />
+/// <reference path="assert/strict.d.ts" />
+/// <reference path="globals.d.ts" />
+/// <reference path="async_hooks.d.ts" />
+/// <reference path="buffer.d.ts" />
+/// <reference path="child_process.d.ts" />
+/// <reference path="cluster.d.ts" />
+/// <reference path="console.d.ts" />
+/// <reference path="constants.d.ts" />
+/// <reference path="crypto.d.ts" />
+/// <reference path="dgram.d.ts" />
+/// <reference path="diagnostics_channel.d.ts" />
+/// <reference path="dns.d.ts" />
+/// <reference path="dns/promises.d.ts" />
+/// <reference path="dns/promises.d.ts" />
+/// <reference path="domain.d.ts" />
+/// <reference path="events.d.ts" />
+/// <reference path="fs.d.ts" />
+/// <reference path="fs/promises.d.ts" />
+/// <reference path="http.d.ts" />
+/// <reference path="http2.d.ts" />
+/// <reference path="https.d.ts" />
+/// <reference path="inspector.d.ts" />
+/// <reference path="module.d.ts" />
+/// <reference path="net.d.ts" />
+/// <reference path="os.d.ts" />
+/// <reference path="path.d.ts" />
+/// <reference path="perf_hooks.d.ts" />
+/// <reference path="process.d.ts" />
+/// <reference path="punycode.d.ts" />
+/// <reference path="querystring.d.ts" />
+/// <reference path="readline.d.ts" />
+/// <reference path="readline/promises.d.ts" />
+/// <reference path="repl.d.ts" />
+/// <reference path="stream.d.ts" />
+/// <reference path="stream/promises.d.ts" />
+/// <reference path="stream/consumers.d.ts" />
+/// <reference path="stream/web.d.ts" />
+/// <reference path="string_decoder.d.ts" />
+/// <reference path="test.d.ts" />
+/// <reference path="timers.d.ts" />
+/// <reference path="timers/promises.d.ts" />
+/// <reference path="tls.d.ts" />
+/// <reference path="trace_events.d.ts" />
+/// <reference path="tty.d.ts" />
+/// <reference path="url.d.ts" />
+/// <reference path="util.d.ts" />
+/// <reference path="v8.d.ts" />
+/// <reference path="vm.d.ts" />
+/// <reference path="wasi.d.ts" />
+/// <reference path="worker_threads.d.ts" />
+/// <reference path="zlib.d.ts" />
+
+/// <reference path="globals.global.d.ts" />
diff --git a/igv_component/node_modules/@types/node/ts4.8/inspector.d.ts b/igv_component/node_modules/@types/node/ts4.8/inspector.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..eba0b55d8bca0ef10cbf24922fb899b67c35f3a9
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/inspector.d.ts
@@ -0,0 +1,2741 @@
+// eslint-disable-next-line dt-header
+// Type definitions for inspector
+
+// These definitions are auto-generated.
+// Please see https://github.com/DefinitelyTyped/DefinitelyTyped/pull/19330
+// for more information.
+
+// tslint:disable:max-line-length
+
+/**
+ * The `inspector` module provides an API for interacting with the V8 inspector.
+ *
+ * It can be accessed using:
+ *
+ * ```js
+ * const inspector = require('inspector');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/inspector.js)
+ */
+declare module 'inspector' {
+    import EventEmitter = require('node:events');
+    interface InspectorNotification<T> {
+        method: string;
+        params: T;
+    }
+    namespace Schema {
+        /**
+         * Description of the protocol domain.
+         */
+        interface Domain {
+            /**
+             * Domain name.
+             */
+            name: string;
+            /**
+             * Domain version.
+             */
+            version: string;
+        }
+        interface GetDomainsReturnType {
+            /**
+             * List of supported domains.
+             */
+            domains: Domain[];
+        }
+    }
+    namespace Runtime {
+        /**
+         * Unique script identifier.
+         */
+        type ScriptId = string;
+        /**
+         * Unique object identifier.
+         */
+        type RemoteObjectId = string;
+        /**
+         * Primitive value which cannot be JSON-stringified.
+         */
+        type UnserializableValue = string;
+        /**
+         * Mirror object referencing original JavaScript object.
+         */
+        interface RemoteObject {
+            /**
+             * Object type.
+             */
+            type: string;
+            /**
+             * Object subtype hint. Specified for <code>object</code> type values only.
+             */
+            subtype?: string | undefined;
+            /**
+             * Object class (constructor) name. Specified for <code>object</code> type values only.
+             */
+            className?: string | undefined;
+            /**
+             * Remote object value in case of primitive values or JSON values (if it was requested).
+             */
+            value?: any;
+            /**
+             * Primitive value which can not be JSON-stringified does not have <code>value</code>, but gets this property.
+             */
+            unserializableValue?: UnserializableValue | undefined;
+            /**
+             * String representation of the object.
+             */
+            description?: string | undefined;
+            /**
+             * Unique object identifier (for non-primitive values).
+             */
+            objectId?: RemoteObjectId | undefined;
+            /**
+             * Preview containing abbreviated property values. Specified for <code>object</code> type values only.
+             * @experimental
+             */
+            preview?: ObjectPreview | undefined;
+            /**
+             * @experimental
+             */
+            customPreview?: CustomPreview | undefined;
+        }
+        /**
+         * @experimental
+         */
+        interface CustomPreview {
+            header: string;
+            hasBody: boolean;
+            formatterObjectId: RemoteObjectId;
+            bindRemoteObjectFunctionId: RemoteObjectId;
+            configObjectId?: RemoteObjectId | undefined;
+        }
+        /**
+         * Object containing abbreviated remote object value.
+         * @experimental
+         */
+        interface ObjectPreview {
+            /**
+             * Object type.
+             */
+            type: string;
+            /**
+             * Object subtype hint. Specified for <code>object</code> type values only.
+             */
+            subtype?: string | undefined;
+            /**
+             * String representation of the object.
+             */
+            description?: string | undefined;
+            /**
+             * True iff some of the properties or entries of the original object did not fit.
+             */
+            overflow: boolean;
+            /**
+             * List of the properties.
+             */
+            properties: PropertyPreview[];
+            /**
+             * List of the entries. Specified for <code>map</code> and <code>set</code> subtype values only.
+             */
+            entries?: EntryPreview[] | undefined;
+        }
+        /**
+         * @experimental
+         */
+        interface PropertyPreview {
+            /**
+             * Property name.
+             */
+            name: string;
+            /**
+             * Object type. Accessor means that the property itself is an accessor property.
+             */
+            type: string;
+            /**
+             * User-friendly property value string.
+             */
+            value?: string | undefined;
+            /**
+             * Nested value preview.
+             */
+            valuePreview?: ObjectPreview | undefined;
+            /**
+             * Object subtype hint. Specified for <code>object</code> type values only.
+             */
+            subtype?: string | undefined;
+        }
+        /**
+         * @experimental
+         */
+        interface EntryPreview {
+            /**
+             * Preview of the key. Specified for map-like collection entries.
+             */
+            key?: ObjectPreview | undefined;
+            /**
+             * Preview of the value.
+             */
+            value: ObjectPreview;
+        }
+        /**
+         * Object property descriptor.
+         */
+        interface PropertyDescriptor {
+            /**
+             * Property name or symbol description.
+             */
+            name: string;
+            /**
+             * The value associated with the property.
+             */
+            value?: RemoteObject | undefined;
+            /**
+             * True if the value associated with the property may be changed (data descriptors only).
+             */
+            writable?: boolean | undefined;
+            /**
+             * A function which serves as a getter for the property, or <code>undefined</code> if there is no getter (accessor descriptors only).
+             */
+            get?: RemoteObject | undefined;
+            /**
+             * A function which serves as a setter for the property, or <code>undefined</code> if there is no setter (accessor descriptors only).
+             */
+            set?: RemoteObject | undefined;
+            /**
+             * True if the type of this property descriptor may be changed and if the property may be deleted from the corresponding object.
+             */
+            configurable: boolean;
+            /**
+             * True if this property shows up during enumeration of the properties on the corresponding object.
+             */
+            enumerable: boolean;
+            /**
+             * True if the result was thrown during the evaluation.
+             */
+            wasThrown?: boolean | undefined;
+            /**
+             * True if the property is owned for the object.
+             */
+            isOwn?: boolean | undefined;
+            /**
+             * Property symbol object, if the property is of the <code>symbol</code> type.
+             */
+            symbol?: RemoteObject | undefined;
+        }
+        /**
+         * Object internal property descriptor. This property isn't normally visible in JavaScript code.
+         */
+        interface InternalPropertyDescriptor {
+            /**
+             * Conventional property name.
+             */
+            name: string;
+            /**
+             * The value associated with the property.
+             */
+            value?: RemoteObject | undefined;
+        }
+        /**
+         * Represents function call argument. Either remote object id <code>objectId</code>, primitive <code>value</code>, unserializable primitive value or neither of (for undefined) them should be specified.
+         */
+        interface CallArgument {
+            /**
+             * Primitive value or serializable javascript object.
+             */
+            value?: any;
+            /**
+             * Primitive value which can not be JSON-stringified.
+             */
+            unserializableValue?: UnserializableValue | undefined;
+            /**
+             * Remote object handle.
+             */
+            objectId?: RemoteObjectId | undefined;
+        }
+        /**
+         * Id of an execution context.
+         */
+        type ExecutionContextId = number;
+        /**
+         * Description of an isolated world.
+         */
+        interface ExecutionContextDescription {
+            /**
+             * Unique id of the execution context. It can be used to specify in which execution context script evaluation should be performed.
+             */
+            id: ExecutionContextId;
+            /**
+             * Execution context origin.
+             */
+            origin: string;
+            /**
+             * Human readable name describing given context.
+             */
+            name: string;
+            /**
+             * Embedder-specific auxiliary data.
+             */
+            auxData?: {} | undefined;
+        }
+        /**
+         * Detailed information about exception (or error) that was thrown during script compilation or execution.
+         */
+        interface ExceptionDetails {
+            /**
+             * Exception id.
+             */
+            exceptionId: number;
+            /**
+             * Exception text, which should be used together with exception object when available.
+             */
+            text: string;
+            /**
+             * Line number of the exception location (0-based).
+             */
+            lineNumber: number;
+            /**
+             * Column number of the exception location (0-based).
+             */
+            columnNumber: number;
+            /**
+             * Script ID of the exception location.
+             */
+            scriptId?: ScriptId | undefined;
+            /**
+             * URL of the exception location, to be used when the script was not reported.
+             */
+            url?: string | undefined;
+            /**
+             * JavaScript stack trace if available.
+             */
+            stackTrace?: StackTrace | undefined;
+            /**
+             * Exception object if available.
+             */
+            exception?: RemoteObject | undefined;
+            /**
+             * Identifier of the context where exception happened.
+             */
+            executionContextId?: ExecutionContextId | undefined;
+        }
+        /**
+         * Number of milliseconds since epoch.
+         */
+        type Timestamp = number;
+        /**
+         * Stack entry for runtime errors and assertions.
+         */
+        interface CallFrame {
+            /**
+             * JavaScript function name.
+             */
+            functionName: string;
+            /**
+             * JavaScript script id.
+             */
+            scriptId: ScriptId;
+            /**
+             * JavaScript script name or url.
+             */
+            url: string;
+            /**
+             * JavaScript script line number (0-based).
+             */
+            lineNumber: number;
+            /**
+             * JavaScript script column number (0-based).
+             */
+            columnNumber: number;
+        }
+        /**
+         * Call frames for assertions or error messages.
+         */
+        interface StackTrace {
+            /**
+             * String label of this stack trace. For async traces this may be a name of the function that initiated the async call.
+             */
+            description?: string | undefined;
+            /**
+             * JavaScript function name.
+             */
+            callFrames: CallFrame[];
+            /**
+             * Asynchronous JavaScript stack trace that preceded this stack, if available.
+             */
+            parent?: StackTrace | undefined;
+            /**
+             * Asynchronous JavaScript stack trace that preceded this stack, if available.
+             * @experimental
+             */
+            parentId?: StackTraceId | undefined;
+        }
+        /**
+         * Unique identifier of current debugger.
+         * @experimental
+         */
+        type UniqueDebuggerId = string;
+        /**
+         * If <code>debuggerId</code> is set stack trace comes from another debugger and can be resolved there. This allows to track cross-debugger calls. See <code>Runtime.StackTrace</code> and <code>Debugger.paused</code> for usages.
+         * @experimental
+         */
+        interface StackTraceId {
+            id: string;
+            debuggerId?: UniqueDebuggerId | undefined;
+        }
+        interface EvaluateParameterType {
+            /**
+             * Expression to evaluate.
+             */
+            expression: string;
+            /**
+             * Symbolic group name that can be used to release multiple objects.
+             */
+            objectGroup?: string | undefined;
+            /**
+             * Determines whether Command Line API should be available during the evaluation.
+             */
+            includeCommandLineAPI?: boolean | undefined;
+            /**
+             * In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides <code>setPauseOnException</code> state.
+             */
+            silent?: boolean | undefined;
+            /**
+             * Specifies in which execution context to perform evaluation. If the parameter is omitted the evaluation will be performed in the context of the inspected page.
+             */
+            contextId?: ExecutionContextId | undefined;
+            /**
+             * Whether the result is expected to be a JSON object that should be sent by value.
+             */
+            returnByValue?: boolean | undefined;
+            /**
+             * Whether preview should be generated for the result.
+             * @experimental
+             */
+            generatePreview?: boolean | undefined;
+            /**
+             * Whether execution should be treated as initiated by user in the UI.
+             */
+            userGesture?: boolean | undefined;
+            /**
+             * Whether execution should <code>await</code> for resulting value and return once awaited promise is resolved.
+             */
+            awaitPromise?: boolean | undefined;
+        }
+        interface AwaitPromiseParameterType {
+            /**
+             * Identifier of the promise.
+             */
+            promiseObjectId: RemoteObjectId;
+            /**
+             * Whether the result is expected to be a JSON object that should be sent by value.
+             */
+            returnByValue?: boolean | undefined;
+            /**
+             * Whether preview should be generated for the result.
+             */
+            generatePreview?: boolean | undefined;
+        }
+        interface CallFunctionOnParameterType {
+            /**
+             * Declaration of the function to call.
+             */
+            functionDeclaration: string;
+            /**
+             * Identifier of the object to call function on. Either objectId or executionContextId should be specified.
+             */
+            objectId?: RemoteObjectId | undefined;
+            /**
+             * Call arguments. All call arguments must belong to the same JavaScript world as the target object.
+             */
+            arguments?: CallArgument[] | undefined;
+            /**
+             * In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides <code>setPauseOnException</code> state.
+             */
+            silent?: boolean | undefined;
+            /**
+             * Whether the result is expected to be a JSON object which should be sent by value.
+             */
+            returnByValue?: boolean | undefined;
+            /**
+             * Whether preview should be generated for the result.
+             * @experimental
+             */
+            generatePreview?: boolean | undefined;
+            /**
+             * Whether execution should be treated as initiated by user in the UI.
+             */
+            userGesture?: boolean | undefined;
+            /**
+             * Whether execution should <code>await</code> for resulting value and return once awaited promise is resolved.
+             */
+            awaitPromise?: boolean | undefined;
+            /**
+             * Specifies execution context which global object will be used to call function on. Either executionContextId or objectId should be specified.
+             */
+            executionContextId?: ExecutionContextId | undefined;
+            /**
+             * Symbolic group name that can be used to release multiple objects. If objectGroup is not specified and objectId is, objectGroup will be inherited from object.
+             */
+            objectGroup?: string | undefined;
+        }
+        interface GetPropertiesParameterType {
+            /**
+             * Identifier of the object to return properties for.
+             */
+            objectId: RemoteObjectId;
+            /**
+             * If true, returns properties belonging only to the element itself, not to its prototype chain.
+             */
+            ownProperties?: boolean | undefined;
+            /**
+             * If true, returns accessor properties (with getter/setter) only; internal properties are not returned either.
+             * @experimental
+             */
+            accessorPropertiesOnly?: boolean | undefined;
+            /**
+             * Whether preview should be generated for the results.
+             * @experimental
+             */
+            generatePreview?: boolean | undefined;
+        }
+        interface ReleaseObjectParameterType {
+            /**
+             * Identifier of the object to release.
+             */
+            objectId: RemoteObjectId;
+        }
+        interface ReleaseObjectGroupParameterType {
+            /**
+             * Symbolic object group name.
+             */
+            objectGroup: string;
+        }
+        interface SetCustomObjectFormatterEnabledParameterType {
+            enabled: boolean;
+        }
+        interface CompileScriptParameterType {
+            /**
+             * Expression to compile.
+             */
+            expression: string;
+            /**
+             * Source url to be set for the script.
+             */
+            sourceURL: string;
+            /**
+             * Specifies whether the compiled script should be persisted.
+             */
+            persistScript: boolean;
+            /**
+             * Specifies in which execution context to perform script run. If the parameter is omitted the evaluation will be performed in the context of the inspected page.
+             */
+            executionContextId?: ExecutionContextId | undefined;
+        }
+        interface RunScriptParameterType {
+            /**
+             * Id of the script to run.
+             */
+            scriptId: ScriptId;
+            /**
+             * Specifies in which execution context to perform script run. If the parameter is omitted the evaluation will be performed in the context of the inspected page.
+             */
+            executionContextId?: ExecutionContextId | undefined;
+            /**
+             * Symbolic group name that can be used to release multiple objects.
+             */
+            objectGroup?: string | undefined;
+            /**
+             * In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides <code>setPauseOnException</code> state.
+             */
+            silent?: boolean | undefined;
+            /**
+             * Determines whether Command Line API should be available during the evaluation.
+             */
+            includeCommandLineAPI?: boolean | undefined;
+            /**
+             * Whether the result is expected to be a JSON object which should be sent by value.
+             */
+            returnByValue?: boolean | undefined;
+            /**
+             * Whether preview should be generated for the result.
+             */
+            generatePreview?: boolean | undefined;
+            /**
+             * Whether execution should <code>await</code> for resulting value and return once awaited promise is resolved.
+             */
+            awaitPromise?: boolean | undefined;
+        }
+        interface QueryObjectsParameterType {
+            /**
+             * Identifier of the prototype to return objects for.
+             */
+            prototypeObjectId: RemoteObjectId;
+        }
+        interface GlobalLexicalScopeNamesParameterType {
+            /**
+             * Specifies in which execution context to lookup global scope variables.
+             */
+            executionContextId?: ExecutionContextId | undefined;
+        }
+        interface EvaluateReturnType {
+            /**
+             * Evaluation result.
+             */
+            result: RemoteObject;
+            /**
+             * Exception details.
+             */
+            exceptionDetails?: ExceptionDetails | undefined;
+        }
+        interface AwaitPromiseReturnType {
+            /**
+             * Promise result. Will contain rejected value if promise was rejected.
+             */
+            result: RemoteObject;
+            /**
+             * Exception details if stack strace is available.
+             */
+            exceptionDetails?: ExceptionDetails | undefined;
+        }
+        interface CallFunctionOnReturnType {
+            /**
+             * Call result.
+             */
+            result: RemoteObject;
+            /**
+             * Exception details.
+             */
+            exceptionDetails?: ExceptionDetails | undefined;
+        }
+        interface GetPropertiesReturnType {
+            /**
+             * Object properties.
+             */
+            result: PropertyDescriptor[];
+            /**
+             * Internal object properties (only of the element itself).
+             */
+            internalProperties?: InternalPropertyDescriptor[] | undefined;
+            /**
+             * Exception details.
+             */
+            exceptionDetails?: ExceptionDetails | undefined;
+        }
+        interface CompileScriptReturnType {
+            /**
+             * Id of the script.
+             */
+            scriptId?: ScriptId | undefined;
+            /**
+             * Exception details.
+             */
+            exceptionDetails?: ExceptionDetails | undefined;
+        }
+        interface RunScriptReturnType {
+            /**
+             * Run result.
+             */
+            result: RemoteObject;
+            /**
+             * Exception details.
+             */
+            exceptionDetails?: ExceptionDetails | undefined;
+        }
+        interface QueryObjectsReturnType {
+            /**
+             * Array with objects.
+             */
+            objects: RemoteObject;
+        }
+        interface GlobalLexicalScopeNamesReturnType {
+            names: string[];
+        }
+        interface ExecutionContextCreatedEventDataType {
+            /**
+             * A newly created execution context.
+             */
+            context: ExecutionContextDescription;
+        }
+        interface ExecutionContextDestroyedEventDataType {
+            /**
+             * Id of the destroyed context
+             */
+            executionContextId: ExecutionContextId;
+        }
+        interface ExceptionThrownEventDataType {
+            /**
+             * Timestamp of the exception.
+             */
+            timestamp: Timestamp;
+            exceptionDetails: ExceptionDetails;
+        }
+        interface ExceptionRevokedEventDataType {
+            /**
+             * Reason describing why exception was revoked.
+             */
+            reason: string;
+            /**
+             * The id of revoked exception, as reported in <code>exceptionThrown</code>.
+             */
+            exceptionId: number;
+        }
+        interface ConsoleAPICalledEventDataType {
+            /**
+             * Type of the call.
+             */
+            type: string;
+            /**
+             * Call arguments.
+             */
+            args: RemoteObject[];
+            /**
+             * Identifier of the context where the call was made.
+             */
+            executionContextId: ExecutionContextId;
+            /**
+             * Call timestamp.
+             */
+            timestamp: Timestamp;
+            /**
+             * Stack trace captured when the call was made.
+             */
+            stackTrace?: StackTrace | undefined;
+            /**
+             * Console context descriptor for calls on non-default console context (not console.*): 'anonymous#unique-logger-id' for call on unnamed context, 'name#unique-logger-id' for call on named context.
+             * @experimental
+             */
+            context?: string | undefined;
+        }
+        interface InspectRequestedEventDataType {
+            object: RemoteObject;
+            hints: {};
+        }
+    }
+    namespace Debugger {
+        /**
+         * Breakpoint identifier.
+         */
+        type BreakpointId = string;
+        /**
+         * Call frame identifier.
+         */
+        type CallFrameId = string;
+        /**
+         * Location in the source code.
+         */
+        interface Location {
+            /**
+             * Script identifier as reported in the <code>Debugger.scriptParsed</code>.
+             */
+            scriptId: Runtime.ScriptId;
+            /**
+             * Line number in the script (0-based).
+             */
+            lineNumber: number;
+            /**
+             * Column number in the script (0-based).
+             */
+            columnNumber?: number | undefined;
+        }
+        /**
+         * Location in the source code.
+         * @experimental
+         */
+        interface ScriptPosition {
+            lineNumber: number;
+            columnNumber: number;
+        }
+        /**
+         * JavaScript call frame. Array of call frames form the call stack.
+         */
+        interface CallFrame {
+            /**
+             * Call frame identifier. This identifier is only valid while the virtual machine is paused.
+             */
+            callFrameId: CallFrameId;
+            /**
+             * Name of the JavaScript function called on this call frame.
+             */
+            functionName: string;
+            /**
+             * Location in the source code.
+             */
+            functionLocation?: Location | undefined;
+            /**
+             * Location in the source code.
+             */
+            location: Location;
+            /**
+             * JavaScript script name or url.
+             */
+            url: string;
+            /**
+             * Scope chain for this call frame.
+             */
+            scopeChain: Scope[];
+            /**
+             * <code>this</code> object for this call frame.
+             */
+            this: Runtime.RemoteObject;
+            /**
+             * The value being returned, if the function is at return point.
+             */
+            returnValue?: Runtime.RemoteObject | undefined;
+        }
+        /**
+         * Scope description.
+         */
+        interface Scope {
+            /**
+             * Scope type.
+             */
+            type: string;
+            /**
+             * Object representing the scope. For <code>global</code> and <code>with</code> scopes it represents the actual object; for the rest of the scopes, it is artificial transient object enumerating scope variables as its properties.
+             */
+            object: Runtime.RemoteObject;
+            name?: string | undefined;
+            /**
+             * Location in the source code where scope starts
+             */
+            startLocation?: Location | undefined;
+            /**
+             * Location in the source code where scope ends
+             */
+            endLocation?: Location | undefined;
+        }
+        /**
+         * Search match for resource.
+         */
+        interface SearchMatch {
+            /**
+             * Line number in resource content.
+             */
+            lineNumber: number;
+            /**
+             * Line with match content.
+             */
+            lineContent: string;
+        }
+        interface BreakLocation {
+            /**
+             * Script identifier as reported in the <code>Debugger.scriptParsed</code>.
+             */
+            scriptId: Runtime.ScriptId;
+            /**
+             * Line number in the script (0-based).
+             */
+            lineNumber: number;
+            /**
+             * Column number in the script (0-based).
+             */
+            columnNumber?: number | undefined;
+            type?: string | undefined;
+        }
+        interface SetBreakpointsActiveParameterType {
+            /**
+             * New value for breakpoints active state.
+             */
+            active: boolean;
+        }
+        interface SetSkipAllPausesParameterType {
+            /**
+             * New value for skip pauses state.
+             */
+            skip: boolean;
+        }
+        interface SetBreakpointByUrlParameterType {
+            /**
+             * Line number to set breakpoint at.
+             */
+            lineNumber: number;
+            /**
+             * URL of the resources to set breakpoint on.
+             */
+            url?: string | undefined;
+            /**
+             * Regex pattern for the URLs of the resources to set breakpoints on. Either <code>url</code> or <code>urlRegex</code> must be specified.
+             */
+            urlRegex?: string | undefined;
+            /**
+             * Script hash of the resources to set breakpoint on.
+             */
+            scriptHash?: string | undefined;
+            /**
+             * Offset in the line to set breakpoint at.
+             */
+            columnNumber?: number | undefined;
+            /**
+             * Expression to use as a breakpoint condition. When specified, debugger will only stop on the breakpoint if this expression evaluates to true.
+             */
+            condition?: string | undefined;
+        }
+        interface SetBreakpointParameterType {
+            /**
+             * Location to set breakpoint in.
+             */
+            location: Location;
+            /**
+             * Expression to use as a breakpoint condition. When specified, debugger will only stop on the breakpoint if this expression evaluates to true.
+             */
+            condition?: string | undefined;
+        }
+        interface RemoveBreakpointParameterType {
+            breakpointId: BreakpointId;
+        }
+        interface GetPossibleBreakpointsParameterType {
+            /**
+             * Start of range to search possible breakpoint locations in.
+             */
+            start: Location;
+            /**
+             * End of range to search possible breakpoint locations in (excluding). When not specified, end of scripts is used as end of range.
+             */
+            end?: Location | undefined;
+            /**
+             * Only consider locations which are in the same (non-nested) function as start.
+             */
+            restrictToFunction?: boolean | undefined;
+        }
+        interface ContinueToLocationParameterType {
+            /**
+             * Location to continue to.
+             */
+            location: Location;
+            targetCallFrames?: string | undefined;
+        }
+        interface PauseOnAsyncCallParameterType {
+            /**
+             * Debugger will pause when async call with given stack trace is started.
+             */
+            parentStackTraceId: Runtime.StackTraceId;
+        }
+        interface StepIntoParameterType {
+            /**
+             * Debugger will issue additional Debugger.paused notification if any async task is scheduled before next pause.
+             * @experimental
+             */
+            breakOnAsyncCall?: boolean | undefined;
+        }
+        interface GetStackTraceParameterType {
+            stackTraceId: Runtime.StackTraceId;
+        }
+        interface SearchInContentParameterType {
+            /**
+             * Id of the script to search in.
+             */
+            scriptId: Runtime.ScriptId;
+            /**
+             * String to search for.
+             */
+            query: string;
+            /**
+             * If true, search is case sensitive.
+             */
+            caseSensitive?: boolean | undefined;
+            /**
+             * If true, treats string parameter as regex.
+             */
+            isRegex?: boolean | undefined;
+        }
+        interface SetScriptSourceParameterType {
+            /**
+             * Id of the script to edit.
+             */
+            scriptId: Runtime.ScriptId;
+            /**
+             * New content of the script.
+             */
+            scriptSource: string;
+            /**
+             *  If true the change will not actually be applied. Dry run may be used to get result description without actually modifying the code.
+             */
+            dryRun?: boolean | undefined;
+        }
+        interface RestartFrameParameterType {
+            /**
+             * Call frame identifier to evaluate on.
+             */
+            callFrameId: CallFrameId;
+        }
+        interface GetScriptSourceParameterType {
+            /**
+             * Id of the script to get source for.
+             */
+            scriptId: Runtime.ScriptId;
+        }
+        interface SetPauseOnExceptionsParameterType {
+            /**
+             * Pause on exceptions mode.
+             */
+            state: string;
+        }
+        interface EvaluateOnCallFrameParameterType {
+            /**
+             * Call frame identifier to evaluate on.
+             */
+            callFrameId: CallFrameId;
+            /**
+             * Expression to evaluate.
+             */
+            expression: string;
+            /**
+             * String object group name to put result into (allows rapid releasing resulting object handles using <code>releaseObjectGroup</code>).
+             */
+            objectGroup?: string | undefined;
+            /**
+             * Specifies whether command line API should be available to the evaluated expression, defaults to false.
+             */
+            includeCommandLineAPI?: boolean | undefined;
+            /**
+             * In silent mode exceptions thrown during evaluation are not reported and do not pause execution. Overrides <code>setPauseOnException</code> state.
+             */
+            silent?: boolean | undefined;
+            /**
+             * Whether the result is expected to be a JSON object that should be sent by value.
+             */
+            returnByValue?: boolean | undefined;
+            /**
+             * Whether preview should be generated for the result.
+             * @experimental
+             */
+            generatePreview?: boolean | undefined;
+            /**
+             * Whether to throw an exception if side effect cannot be ruled out during evaluation.
+             */
+            throwOnSideEffect?: boolean | undefined;
+        }
+        interface SetVariableValueParameterType {
+            /**
+             * 0-based number of scope as was listed in scope chain. Only 'local', 'closure' and 'catch' scope types are allowed. Other scopes could be manipulated manually.
+             */
+            scopeNumber: number;
+            /**
+             * Variable name.
+             */
+            variableName: string;
+            /**
+             * New variable value.
+             */
+            newValue: Runtime.CallArgument;
+            /**
+             * Id of callframe that holds variable.
+             */
+            callFrameId: CallFrameId;
+        }
+        interface SetReturnValueParameterType {
+            /**
+             * New return value.
+             */
+            newValue: Runtime.CallArgument;
+        }
+        interface SetAsyncCallStackDepthParameterType {
+            /**
+             * Maximum depth of async call stacks. Setting to <code>0</code> will effectively disable collecting async call stacks (default).
+             */
+            maxDepth: number;
+        }
+        interface SetBlackboxPatternsParameterType {
+            /**
+             * Array of regexps that will be used to check script url for blackbox state.
+             */
+            patterns: string[];
+        }
+        interface SetBlackboxedRangesParameterType {
+            /**
+             * Id of the script.
+             */
+            scriptId: Runtime.ScriptId;
+            positions: ScriptPosition[];
+        }
+        interface EnableReturnType {
+            /**
+             * Unique identifier of the debugger.
+             * @experimental
+             */
+            debuggerId: Runtime.UniqueDebuggerId;
+        }
+        interface SetBreakpointByUrlReturnType {
+            /**
+             * Id of the created breakpoint for further reference.
+             */
+            breakpointId: BreakpointId;
+            /**
+             * List of the locations this breakpoint resolved into upon addition.
+             */
+            locations: Location[];
+        }
+        interface SetBreakpointReturnType {
+            /**
+             * Id of the created breakpoint for further reference.
+             */
+            breakpointId: BreakpointId;
+            /**
+             * Location this breakpoint resolved into.
+             */
+            actualLocation: Location;
+        }
+        interface GetPossibleBreakpointsReturnType {
+            /**
+             * List of the possible breakpoint locations.
+             */
+            locations: BreakLocation[];
+        }
+        interface GetStackTraceReturnType {
+            stackTrace: Runtime.StackTrace;
+        }
+        interface SearchInContentReturnType {
+            /**
+             * List of search matches.
+             */
+            result: SearchMatch[];
+        }
+        interface SetScriptSourceReturnType {
+            /**
+             * New stack trace in case editing has happened while VM was stopped.
+             */
+            callFrames?: CallFrame[] | undefined;
+            /**
+             * Whether current call stack  was modified after applying the changes.
+             */
+            stackChanged?: boolean | undefined;
+            /**
+             * Async stack trace, if any.
+             */
+            asyncStackTrace?: Runtime.StackTrace | undefined;
+            /**
+             * Async stack trace, if any.
+             * @experimental
+             */
+            asyncStackTraceId?: Runtime.StackTraceId | undefined;
+            /**
+             * Exception details if any.
+             */
+            exceptionDetails?: Runtime.ExceptionDetails | undefined;
+        }
+        interface RestartFrameReturnType {
+            /**
+             * New stack trace.
+             */
+            callFrames: CallFrame[];
+            /**
+             * Async stack trace, if any.
+             */
+            asyncStackTrace?: Runtime.StackTrace | undefined;
+            /**
+             * Async stack trace, if any.
+             * @experimental
+             */
+            asyncStackTraceId?: Runtime.StackTraceId | undefined;
+        }
+        interface GetScriptSourceReturnType {
+            /**
+             * Script source.
+             */
+            scriptSource: string;
+        }
+        interface EvaluateOnCallFrameReturnType {
+            /**
+             * Object wrapper for the evaluation result.
+             */
+            result: Runtime.RemoteObject;
+            /**
+             * Exception details.
+             */
+            exceptionDetails?: Runtime.ExceptionDetails | undefined;
+        }
+        interface ScriptParsedEventDataType {
+            /**
+             * Identifier of the script parsed.
+             */
+            scriptId: Runtime.ScriptId;
+            /**
+             * URL or name of the script parsed (if any).
+             */
+            url: string;
+            /**
+             * Line offset of the script within the resource with given URL (for script tags).
+             */
+            startLine: number;
+            /**
+             * Column offset of the script within the resource with given URL.
+             */
+            startColumn: number;
+            /**
+             * Last line of the script.
+             */
+            endLine: number;
+            /**
+             * Length of the last line of the script.
+             */
+            endColumn: number;
+            /**
+             * Specifies script creation context.
+             */
+            executionContextId: Runtime.ExecutionContextId;
+            /**
+             * Content hash of the script.
+             */
+            hash: string;
+            /**
+             * Embedder-specific auxiliary data.
+             */
+            executionContextAuxData?: {} | undefined;
+            /**
+             * True, if this script is generated as a result of the live edit operation.
+             * @experimental
+             */
+            isLiveEdit?: boolean | undefined;
+            /**
+             * URL of source map associated with script (if any).
+             */
+            sourceMapURL?: string | undefined;
+            /**
+             * True, if this script has sourceURL.
+             */
+            hasSourceURL?: boolean | undefined;
+            /**
+             * True, if this script is ES6 module.
+             */
+            isModule?: boolean | undefined;
+            /**
+             * This script length.
+             */
+            length?: number | undefined;
+            /**
+             * JavaScript top stack frame of where the script parsed event was triggered if available.
+             * @experimental
+             */
+            stackTrace?: Runtime.StackTrace | undefined;
+        }
+        interface ScriptFailedToParseEventDataType {
+            /**
+             * Identifier of the script parsed.
+             */
+            scriptId: Runtime.ScriptId;
+            /**
+             * URL or name of the script parsed (if any).
+             */
+            url: string;
+            /**
+             * Line offset of the script within the resource with given URL (for script tags).
+             */
+            startLine: number;
+            /**
+             * Column offset of the script within the resource with given URL.
+             */
+            startColumn: number;
+            /**
+             * Last line of the script.
+             */
+            endLine: number;
+            /**
+             * Length of the last line of the script.
+             */
+            endColumn: number;
+            /**
+             * Specifies script creation context.
+             */
+            executionContextId: Runtime.ExecutionContextId;
+            /**
+             * Content hash of the script.
+             */
+            hash: string;
+            /**
+             * Embedder-specific auxiliary data.
+             */
+            executionContextAuxData?: {} | undefined;
+            /**
+             * URL of source map associated with script (if any).
+             */
+            sourceMapURL?: string | undefined;
+            /**
+             * True, if this script has sourceURL.
+             */
+            hasSourceURL?: boolean | undefined;
+            /**
+             * True, if this script is ES6 module.
+             */
+            isModule?: boolean | undefined;
+            /**
+             * This script length.
+             */
+            length?: number | undefined;
+            /**
+             * JavaScript top stack frame of where the script parsed event was triggered if available.
+             * @experimental
+             */
+            stackTrace?: Runtime.StackTrace | undefined;
+        }
+        interface BreakpointResolvedEventDataType {
+            /**
+             * Breakpoint unique identifier.
+             */
+            breakpointId: BreakpointId;
+            /**
+             * Actual breakpoint location.
+             */
+            location: Location;
+        }
+        interface PausedEventDataType {
+            /**
+             * Call stack the virtual machine stopped on.
+             */
+            callFrames: CallFrame[];
+            /**
+             * Pause reason.
+             */
+            reason: string;
+            /**
+             * Object containing break-specific auxiliary properties.
+             */
+            data?: {} | undefined;
+            /**
+             * Hit breakpoints IDs
+             */
+            hitBreakpoints?: string[] | undefined;
+            /**
+             * Async stack trace, if any.
+             */
+            asyncStackTrace?: Runtime.StackTrace | undefined;
+            /**
+             * Async stack trace, if any.
+             * @experimental
+             */
+            asyncStackTraceId?: Runtime.StackTraceId | undefined;
+            /**
+             * Just scheduled async call will have this stack trace as parent stack during async execution. This field is available only after <code>Debugger.stepInto</code> call with <code>breakOnAsynCall</code> flag.
+             * @experimental
+             */
+            asyncCallStackTraceId?: Runtime.StackTraceId | undefined;
+        }
+    }
+    namespace Console {
+        /**
+         * Console message.
+         */
+        interface ConsoleMessage {
+            /**
+             * Message source.
+             */
+            source: string;
+            /**
+             * Message severity.
+             */
+            level: string;
+            /**
+             * Message text.
+             */
+            text: string;
+            /**
+             * URL of the message origin.
+             */
+            url?: string | undefined;
+            /**
+             * Line number in the resource that generated this message (1-based).
+             */
+            line?: number | undefined;
+            /**
+             * Column number in the resource that generated this message (1-based).
+             */
+            column?: number | undefined;
+        }
+        interface MessageAddedEventDataType {
+            /**
+             * Console message that has been added.
+             */
+            message: ConsoleMessage;
+        }
+    }
+    namespace Profiler {
+        /**
+         * Profile node. Holds callsite information, execution statistics and child nodes.
+         */
+        interface ProfileNode {
+            /**
+             * Unique id of the node.
+             */
+            id: number;
+            /**
+             * Function location.
+             */
+            callFrame: Runtime.CallFrame;
+            /**
+             * Number of samples where this node was on top of the call stack.
+             */
+            hitCount?: number | undefined;
+            /**
+             * Child node ids.
+             */
+            children?: number[] | undefined;
+            /**
+             * The reason of being not optimized. The function may be deoptimized or marked as don't optimize.
+             */
+            deoptReason?: string | undefined;
+            /**
+             * An array of source position ticks.
+             */
+            positionTicks?: PositionTickInfo[] | undefined;
+        }
+        /**
+         * Profile.
+         */
+        interface Profile {
+            /**
+             * The list of profile nodes. First item is the root node.
+             */
+            nodes: ProfileNode[];
+            /**
+             * Profiling start timestamp in microseconds.
+             */
+            startTime: number;
+            /**
+             * Profiling end timestamp in microseconds.
+             */
+            endTime: number;
+            /**
+             * Ids of samples top nodes.
+             */
+            samples?: number[] | undefined;
+            /**
+             * Time intervals between adjacent samples in microseconds. The first delta is relative to the profile startTime.
+             */
+            timeDeltas?: number[] | undefined;
+        }
+        /**
+         * Specifies a number of samples attributed to a certain source position.
+         */
+        interface PositionTickInfo {
+            /**
+             * Source line number (1-based).
+             */
+            line: number;
+            /**
+             * Number of samples attributed to the source line.
+             */
+            ticks: number;
+        }
+        /**
+         * Coverage data for a source range.
+         */
+        interface CoverageRange {
+            /**
+             * JavaScript script source offset for the range start.
+             */
+            startOffset: number;
+            /**
+             * JavaScript script source offset for the range end.
+             */
+            endOffset: number;
+            /**
+             * Collected execution count of the source range.
+             */
+            count: number;
+        }
+        /**
+         * Coverage data for a JavaScript function.
+         */
+        interface FunctionCoverage {
+            /**
+             * JavaScript function name.
+             */
+            functionName: string;
+            /**
+             * Source ranges inside the function with coverage data.
+             */
+            ranges: CoverageRange[];
+            /**
+             * Whether coverage data for this function has block granularity.
+             */
+            isBlockCoverage: boolean;
+        }
+        /**
+         * Coverage data for a JavaScript script.
+         */
+        interface ScriptCoverage {
+            /**
+             * JavaScript script id.
+             */
+            scriptId: Runtime.ScriptId;
+            /**
+             * JavaScript script name or url.
+             */
+            url: string;
+            /**
+             * Functions contained in the script that has coverage data.
+             */
+            functions: FunctionCoverage[];
+        }
+        /**
+         * Describes a type collected during runtime.
+         * @experimental
+         */
+        interface TypeObject {
+            /**
+             * Name of a type collected with type profiling.
+             */
+            name: string;
+        }
+        /**
+         * Source offset and types for a parameter or return value.
+         * @experimental
+         */
+        interface TypeProfileEntry {
+            /**
+             * Source offset of the parameter or end of function for return values.
+             */
+            offset: number;
+            /**
+             * The types for this parameter or return value.
+             */
+            types: TypeObject[];
+        }
+        /**
+         * Type profile data collected during runtime for a JavaScript script.
+         * @experimental
+         */
+        interface ScriptTypeProfile {
+            /**
+             * JavaScript script id.
+             */
+            scriptId: Runtime.ScriptId;
+            /**
+             * JavaScript script name or url.
+             */
+            url: string;
+            /**
+             * Type profile entries for parameters and return values of the functions in the script.
+             */
+            entries: TypeProfileEntry[];
+        }
+        interface SetSamplingIntervalParameterType {
+            /**
+             * New sampling interval in microseconds.
+             */
+            interval: number;
+        }
+        interface StartPreciseCoverageParameterType {
+            /**
+             * Collect accurate call counts beyond simple 'covered' or 'not covered'.
+             */
+            callCount?: boolean | undefined;
+            /**
+             * Collect block-based coverage.
+             */
+            detailed?: boolean | undefined;
+        }
+        interface StopReturnType {
+            /**
+             * Recorded profile.
+             */
+            profile: Profile;
+        }
+        interface TakePreciseCoverageReturnType {
+            /**
+             * Coverage data for the current isolate.
+             */
+            result: ScriptCoverage[];
+        }
+        interface GetBestEffortCoverageReturnType {
+            /**
+             * Coverage data for the current isolate.
+             */
+            result: ScriptCoverage[];
+        }
+        interface TakeTypeProfileReturnType {
+            /**
+             * Type profile for all scripts since startTypeProfile() was turned on.
+             */
+            result: ScriptTypeProfile[];
+        }
+        interface ConsoleProfileStartedEventDataType {
+            id: string;
+            /**
+             * Location of console.profile().
+             */
+            location: Debugger.Location;
+            /**
+             * Profile title passed as an argument to console.profile().
+             */
+            title?: string | undefined;
+        }
+        interface ConsoleProfileFinishedEventDataType {
+            id: string;
+            /**
+             * Location of console.profileEnd().
+             */
+            location: Debugger.Location;
+            profile: Profile;
+            /**
+             * Profile title passed as an argument to console.profile().
+             */
+            title?: string | undefined;
+        }
+    }
+    namespace HeapProfiler {
+        /**
+         * Heap snapshot object id.
+         */
+        type HeapSnapshotObjectId = string;
+        /**
+         * Sampling Heap Profile node. Holds callsite information, allocation statistics and child nodes.
+         */
+        interface SamplingHeapProfileNode {
+            /**
+             * Function location.
+             */
+            callFrame: Runtime.CallFrame;
+            /**
+             * Allocations size in bytes for the node excluding children.
+             */
+            selfSize: number;
+            /**
+             * Child nodes.
+             */
+            children: SamplingHeapProfileNode[];
+        }
+        /**
+         * Profile.
+         */
+        interface SamplingHeapProfile {
+            head: SamplingHeapProfileNode;
+        }
+        interface StartTrackingHeapObjectsParameterType {
+            trackAllocations?: boolean | undefined;
+        }
+        interface StopTrackingHeapObjectsParameterType {
+            /**
+             * If true 'reportHeapSnapshotProgress' events will be generated while snapshot is being taken when the tracking is stopped.
+             */
+            reportProgress?: boolean | undefined;
+        }
+        interface TakeHeapSnapshotParameterType {
+            /**
+             * If true 'reportHeapSnapshotProgress' events will be generated while snapshot is being taken.
+             */
+            reportProgress?: boolean | undefined;
+        }
+        interface GetObjectByHeapObjectIdParameterType {
+            objectId: HeapSnapshotObjectId;
+            /**
+             * Symbolic group name that can be used to release multiple objects.
+             */
+            objectGroup?: string | undefined;
+        }
+        interface AddInspectedHeapObjectParameterType {
+            /**
+             * Heap snapshot object id to be accessible by means of $x command line API.
+             */
+            heapObjectId: HeapSnapshotObjectId;
+        }
+        interface GetHeapObjectIdParameterType {
+            /**
+             * Identifier of the object to get heap object id for.
+             */
+            objectId: Runtime.RemoteObjectId;
+        }
+        interface StartSamplingParameterType {
+            /**
+             * Average sample interval in bytes. Poisson distribution is used for the intervals. The default value is 32768 bytes.
+             */
+            samplingInterval?: number | undefined;
+        }
+        interface GetObjectByHeapObjectIdReturnType {
+            /**
+             * Evaluation result.
+             */
+            result: Runtime.RemoteObject;
+        }
+        interface GetHeapObjectIdReturnType {
+            /**
+             * Id of the heap snapshot object corresponding to the passed remote object id.
+             */
+            heapSnapshotObjectId: HeapSnapshotObjectId;
+        }
+        interface StopSamplingReturnType {
+            /**
+             * Recorded sampling heap profile.
+             */
+            profile: SamplingHeapProfile;
+        }
+        interface GetSamplingProfileReturnType {
+            /**
+             * Return the sampling profile being collected.
+             */
+            profile: SamplingHeapProfile;
+        }
+        interface AddHeapSnapshotChunkEventDataType {
+            chunk: string;
+        }
+        interface ReportHeapSnapshotProgressEventDataType {
+            done: number;
+            total: number;
+            finished?: boolean | undefined;
+        }
+        interface LastSeenObjectIdEventDataType {
+            lastSeenObjectId: number;
+            timestamp: number;
+        }
+        interface HeapStatsUpdateEventDataType {
+            /**
+             * An array of triplets. Each triplet describes a fragment. The first integer is the fragment index, the second integer is a total count of objects for the fragment, the third integer is a total size of the objects for the fragment.
+             */
+            statsUpdate: number[];
+        }
+    }
+    namespace NodeTracing {
+        interface TraceConfig {
+            /**
+             * Controls how the trace buffer stores data.
+             */
+            recordMode?: string | undefined;
+            /**
+             * Included category filters.
+             */
+            includedCategories: string[];
+        }
+        interface StartParameterType {
+            traceConfig: TraceConfig;
+        }
+        interface GetCategoriesReturnType {
+            /**
+             * A list of supported tracing categories.
+             */
+            categories: string[];
+        }
+        interface DataCollectedEventDataType {
+            value: Array<{}>;
+        }
+    }
+    namespace NodeWorker {
+        type WorkerID = string;
+        /**
+         * Unique identifier of attached debugging session.
+         */
+        type SessionID = string;
+        interface WorkerInfo {
+            workerId: WorkerID;
+            type: string;
+            title: string;
+            url: string;
+        }
+        interface SendMessageToWorkerParameterType {
+            message: string;
+            /**
+             * Identifier of the session.
+             */
+            sessionId: SessionID;
+        }
+        interface EnableParameterType {
+            /**
+             * Whether to new workers should be paused until the frontend sends `Runtime.runIfWaitingForDebugger`
+             * message to run them.
+             */
+            waitForDebuggerOnStart: boolean;
+        }
+        interface DetachParameterType {
+            sessionId: SessionID;
+        }
+        interface AttachedToWorkerEventDataType {
+            /**
+             * Identifier assigned to the session used to send/receive messages.
+             */
+            sessionId: SessionID;
+            workerInfo: WorkerInfo;
+            waitingForDebugger: boolean;
+        }
+        interface DetachedFromWorkerEventDataType {
+            /**
+             * Detached session identifier.
+             */
+            sessionId: SessionID;
+        }
+        interface ReceivedMessageFromWorkerEventDataType {
+            /**
+             * Identifier of a session which sends a message.
+             */
+            sessionId: SessionID;
+            message: string;
+        }
+    }
+    namespace NodeRuntime {
+        interface NotifyWhenWaitingForDisconnectParameterType {
+            enabled: boolean;
+        }
+    }
+    /**
+     * The `inspector.Session` is used for dispatching messages to the V8 inspector
+     * back-end and receiving message responses and notifications.
+     */
+    class Session extends EventEmitter {
+        /**
+         * Create a new instance of the inspector.Session class.
+         * The inspector session needs to be connected through session.connect() before the messages can be dispatched to the inspector backend.
+         */
+        constructor();
+        /**
+         * Connects a session to the inspector back-end.
+         * @since v8.0.0
+         */
+        connect(): void;
+        /**
+         * Immediately close the session. All pending message callbacks will be called
+         * with an error. `session.connect()` will need to be called to be able to send
+         * messages again. Reconnected session will lose all inspector state, such as
+         * enabled agents or configured breakpoints.
+         * @since v8.0.0
+         */
+        disconnect(): void;
+        /**
+         * Posts a message to the inspector back-end. `callback` will be notified when
+         * a response is received. `callback` is a function that accepts two optional
+         * arguments: error and message-specific result.
+         *
+         * ```js
+         * session.post('Runtime.evaluate', { expression: '2 + 2' },
+         *              (error, { result }) => console.log(result));
+         * // Output: { type: 'number', value: 4, description: '4' }
+         * ```
+         *
+         * The latest version of the V8 inspector protocol is published on the [Chrome DevTools Protocol Viewer](https://chromedevtools.github.io/devtools-protocol/v8/).
+         *
+         * Node.js inspector supports all the Chrome DevTools Protocol domains declared
+         * by V8\. Chrome DevTools Protocol domain provides an interface for interacting
+         * with one of the runtime agents used to inspect the application state and listen
+         * to the run-time events.
+         *
+         * ## Example usage
+         *
+         * Apart from the debugger, various V8 Profilers are available through the DevTools
+         * protocol.
+         * @since v8.0.0
+         */
+        post(method: string, params?: {}, callback?: (err: Error | null, params?: {}) => void): void;
+        post(method: string, callback?: (err: Error | null, params?: {}) => void): void;
+        /**
+         * Returns supported domains.
+         */
+        post(method: 'Schema.getDomains', callback?: (err: Error | null, params: Schema.GetDomainsReturnType) => void): void;
+        /**
+         * Evaluates expression on global object.
+         */
+        post(method: 'Runtime.evaluate', params?: Runtime.EvaluateParameterType, callback?: (err: Error | null, params: Runtime.EvaluateReturnType) => void): void;
+        post(method: 'Runtime.evaluate', callback?: (err: Error | null, params: Runtime.EvaluateReturnType) => void): void;
+        /**
+         * Add handler to promise with given promise object id.
+         */
+        post(method: 'Runtime.awaitPromise', params?: Runtime.AwaitPromiseParameterType, callback?: (err: Error | null, params: Runtime.AwaitPromiseReturnType) => void): void;
+        post(method: 'Runtime.awaitPromise', callback?: (err: Error | null, params: Runtime.AwaitPromiseReturnType) => void): void;
+        /**
+         * Calls function with given declaration on the given object. Object group of the result is inherited from the target object.
+         */
+        post(method: 'Runtime.callFunctionOn', params?: Runtime.CallFunctionOnParameterType, callback?: (err: Error | null, params: Runtime.CallFunctionOnReturnType) => void): void;
+        post(method: 'Runtime.callFunctionOn', callback?: (err: Error | null, params: Runtime.CallFunctionOnReturnType) => void): void;
+        /**
+         * Returns properties of a given object. Object group of the result is inherited from the target object.
+         */
+        post(method: 'Runtime.getProperties', params?: Runtime.GetPropertiesParameterType, callback?: (err: Error | null, params: Runtime.GetPropertiesReturnType) => void): void;
+        post(method: 'Runtime.getProperties', callback?: (err: Error | null, params: Runtime.GetPropertiesReturnType) => void): void;
+        /**
+         * Releases remote object with given id.
+         */
+        post(method: 'Runtime.releaseObject', params?: Runtime.ReleaseObjectParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Runtime.releaseObject', callback?: (err: Error | null) => void): void;
+        /**
+         * Releases all remote objects that belong to a given group.
+         */
+        post(method: 'Runtime.releaseObjectGroup', params?: Runtime.ReleaseObjectGroupParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Runtime.releaseObjectGroup', callback?: (err: Error | null) => void): void;
+        /**
+         * Tells inspected instance to run if it was waiting for debugger to attach.
+         */
+        post(method: 'Runtime.runIfWaitingForDebugger', callback?: (err: Error | null) => void): void;
+        /**
+         * Enables reporting of execution contexts creation by means of <code>executionContextCreated</code> event. When the reporting gets enabled the event will be sent immediately for each existing execution context.
+         */
+        post(method: 'Runtime.enable', callback?: (err: Error | null) => void): void;
+        /**
+         * Disables reporting of execution contexts creation.
+         */
+        post(method: 'Runtime.disable', callback?: (err: Error | null) => void): void;
+        /**
+         * Discards collected exceptions and console API calls.
+         */
+        post(method: 'Runtime.discardConsoleEntries', callback?: (err: Error | null) => void): void;
+        /**
+         * @experimental
+         */
+        post(method: 'Runtime.setCustomObjectFormatterEnabled', params?: Runtime.SetCustomObjectFormatterEnabledParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Runtime.setCustomObjectFormatterEnabled', callback?: (err: Error | null) => void): void;
+        /**
+         * Compiles expression.
+         */
+        post(method: 'Runtime.compileScript', params?: Runtime.CompileScriptParameterType, callback?: (err: Error | null, params: Runtime.CompileScriptReturnType) => void): void;
+        post(method: 'Runtime.compileScript', callback?: (err: Error | null, params: Runtime.CompileScriptReturnType) => void): void;
+        /**
+         * Runs script with given id in a given context.
+         */
+        post(method: 'Runtime.runScript', params?: Runtime.RunScriptParameterType, callback?: (err: Error | null, params: Runtime.RunScriptReturnType) => void): void;
+        post(method: 'Runtime.runScript', callback?: (err: Error | null, params: Runtime.RunScriptReturnType) => void): void;
+        post(method: 'Runtime.queryObjects', params?: Runtime.QueryObjectsParameterType, callback?: (err: Error | null, params: Runtime.QueryObjectsReturnType) => void): void;
+        post(method: 'Runtime.queryObjects', callback?: (err: Error | null, params: Runtime.QueryObjectsReturnType) => void): void;
+        /**
+         * Returns all let, const and class variables from global scope.
+         */
+        post(
+            method: 'Runtime.globalLexicalScopeNames',
+            params?: Runtime.GlobalLexicalScopeNamesParameterType,
+            callback?: (err: Error | null, params: Runtime.GlobalLexicalScopeNamesReturnType) => void
+        ): void;
+        post(method: 'Runtime.globalLexicalScopeNames', callback?: (err: Error | null, params: Runtime.GlobalLexicalScopeNamesReturnType) => void): void;
+        /**
+         * Enables debugger for the given page. Clients should not assume that the debugging has been enabled until the result for this command is received.
+         */
+        post(method: 'Debugger.enable', callback?: (err: Error | null, params: Debugger.EnableReturnType) => void): void;
+        /**
+         * Disables debugger for given page.
+         */
+        post(method: 'Debugger.disable', callback?: (err: Error | null) => void): void;
+        /**
+         * Activates / deactivates all breakpoints on the page.
+         */
+        post(method: 'Debugger.setBreakpointsActive', params?: Debugger.SetBreakpointsActiveParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.setBreakpointsActive', callback?: (err: Error | null) => void): void;
+        /**
+         * Makes page not interrupt on any pauses (breakpoint, exception, dom exception etc).
+         */
+        post(method: 'Debugger.setSkipAllPauses', params?: Debugger.SetSkipAllPausesParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.setSkipAllPauses', callback?: (err: Error | null) => void): void;
+        /**
+         * Sets JavaScript breakpoint at given location specified either by URL or URL regex. Once this command is issued, all existing parsed scripts will have breakpoints resolved and returned in <code>locations</code> property. Further matching script parsing will result in subsequent <code>breakpointResolved</code> events issued. This logical breakpoint will survive page reloads.
+         */
+        post(method: 'Debugger.setBreakpointByUrl', params?: Debugger.SetBreakpointByUrlParameterType, callback?: (err: Error | null, params: Debugger.SetBreakpointByUrlReturnType) => void): void;
+        post(method: 'Debugger.setBreakpointByUrl', callback?: (err: Error | null, params: Debugger.SetBreakpointByUrlReturnType) => void): void;
+        /**
+         * Sets JavaScript breakpoint at a given location.
+         */
+        post(method: 'Debugger.setBreakpoint', params?: Debugger.SetBreakpointParameterType, callback?: (err: Error | null, params: Debugger.SetBreakpointReturnType) => void): void;
+        post(method: 'Debugger.setBreakpoint', callback?: (err: Error | null, params: Debugger.SetBreakpointReturnType) => void): void;
+        /**
+         * Removes JavaScript breakpoint.
+         */
+        post(method: 'Debugger.removeBreakpoint', params?: Debugger.RemoveBreakpointParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.removeBreakpoint', callback?: (err: Error | null) => void): void;
+        /**
+         * Returns possible locations for breakpoint. scriptId in start and end range locations should be the same.
+         */
+        post(
+            method: 'Debugger.getPossibleBreakpoints',
+            params?: Debugger.GetPossibleBreakpointsParameterType,
+            callback?: (err: Error | null, params: Debugger.GetPossibleBreakpointsReturnType) => void
+        ): void;
+        post(method: 'Debugger.getPossibleBreakpoints', callback?: (err: Error | null, params: Debugger.GetPossibleBreakpointsReturnType) => void): void;
+        /**
+         * Continues execution until specific location is reached.
+         */
+        post(method: 'Debugger.continueToLocation', params?: Debugger.ContinueToLocationParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.continueToLocation', callback?: (err: Error | null) => void): void;
+        /**
+         * @experimental
+         */
+        post(method: 'Debugger.pauseOnAsyncCall', params?: Debugger.PauseOnAsyncCallParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.pauseOnAsyncCall', callback?: (err: Error | null) => void): void;
+        /**
+         * Steps over the statement.
+         */
+        post(method: 'Debugger.stepOver', callback?: (err: Error | null) => void): void;
+        /**
+         * Steps into the function call.
+         */
+        post(method: 'Debugger.stepInto', params?: Debugger.StepIntoParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.stepInto', callback?: (err: Error | null) => void): void;
+        /**
+         * Steps out of the function call.
+         */
+        post(method: 'Debugger.stepOut', callback?: (err: Error | null) => void): void;
+        /**
+         * Stops on the next JavaScript statement.
+         */
+        post(method: 'Debugger.pause', callback?: (err: Error | null) => void): void;
+        /**
+         * This method is deprecated - use Debugger.stepInto with breakOnAsyncCall and Debugger.pauseOnAsyncTask instead. Steps into next scheduled async task if any is scheduled before next pause. Returns success when async task is actually scheduled, returns error if no task were scheduled or another scheduleStepIntoAsync was called.
+         * @experimental
+         */
+        post(method: 'Debugger.scheduleStepIntoAsync', callback?: (err: Error | null) => void): void;
+        /**
+         * Resumes JavaScript execution.
+         */
+        post(method: 'Debugger.resume', callback?: (err: Error | null) => void): void;
+        /**
+         * Returns stack trace with given <code>stackTraceId</code>.
+         * @experimental
+         */
+        post(method: 'Debugger.getStackTrace', params?: Debugger.GetStackTraceParameterType, callback?: (err: Error | null, params: Debugger.GetStackTraceReturnType) => void): void;
+        post(method: 'Debugger.getStackTrace', callback?: (err: Error | null, params: Debugger.GetStackTraceReturnType) => void): void;
+        /**
+         * Searches for given string in script content.
+         */
+        post(method: 'Debugger.searchInContent', params?: Debugger.SearchInContentParameterType, callback?: (err: Error | null, params: Debugger.SearchInContentReturnType) => void): void;
+        post(method: 'Debugger.searchInContent', callback?: (err: Error | null, params: Debugger.SearchInContentReturnType) => void): void;
+        /**
+         * Edits JavaScript source live.
+         */
+        post(method: 'Debugger.setScriptSource', params?: Debugger.SetScriptSourceParameterType, callback?: (err: Error | null, params: Debugger.SetScriptSourceReturnType) => void): void;
+        post(method: 'Debugger.setScriptSource', callback?: (err: Error | null, params: Debugger.SetScriptSourceReturnType) => void): void;
+        /**
+         * Restarts particular call frame from the beginning.
+         */
+        post(method: 'Debugger.restartFrame', params?: Debugger.RestartFrameParameterType, callback?: (err: Error | null, params: Debugger.RestartFrameReturnType) => void): void;
+        post(method: 'Debugger.restartFrame', callback?: (err: Error | null, params: Debugger.RestartFrameReturnType) => void): void;
+        /**
+         * Returns source for the script with given id.
+         */
+        post(method: 'Debugger.getScriptSource', params?: Debugger.GetScriptSourceParameterType, callback?: (err: Error | null, params: Debugger.GetScriptSourceReturnType) => void): void;
+        post(method: 'Debugger.getScriptSource', callback?: (err: Error | null, params: Debugger.GetScriptSourceReturnType) => void): void;
+        /**
+         * Defines pause on exceptions state. Can be set to stop on all exceptions, uncaught exceptions or no exceptions. Initial pause on exceptions state is <code>none</code>.
+         */
+        post(method: 'Debugger.setPauseOnExceptions', params?: Debugger.SetPauseOnExceptionsParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.setPauseOnExceptions', callback?: (err: Error | null) => void): void;
+        /**
+         * Evaluates expression on a given call frame.
+         */
+        post(method: 'Debugger.evaluateOnCallFrame', params?: Debugger.EvaluateOnCallFrameParameterType, callback?: (err: Error | null, params: Debugger.EvaluateOnCallFrameReturnType) => void): void;
+        post(method: 'Debugger.evaluateOnCallFrame', callback?: (err: Error | null, params: Debugger.EvaluateOnCallFrameReturnType) => void): void;
+        /**
+         * Changes value of variable in a callframe. Object-based scopes are not supported and must be mutated manually.
+         */
+        post(method: 'Debugger.setVariableValue', params?: Debugger.SetVariableValueParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.setVariableValue', callback?: (err: Error | null) => void): void;
+        /**
+         * Changes return value in top frame. Available only at return break position.
+         * @experimental
+         */
+        post(method: 'Debugger.setReturnValue', params?: Debugger.SetReturnValueParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.setReturnValue', callback?: (err: Error | null) => void): void;
+        /**
+         * Enables or disables async call stacks tracking.
+         */
+        post(method: 'Debugger.setAsyncCallStackDepth', params?: Debugger.SetAsyncCallStackDepthParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.setAsyncCallStackDepth', callback?: (err: Error | null) => void): void;
+        /**
+         * Replace previous blackbox patterns with passed ones. Forces backend to skip stepping/pausing in scripts with url matching one of the patterns. VM will try to leave blackboxed script by performing 'step in' several times, finally resorting to 'step out' if unsuccessful.
+         * @experimental
+         */
+        post(method: 'Debugger.setBlackboxPatterns', params?: Debugger.SetBlackboxPatternsParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.setBlackboxPatterns', callback?: (err: Error | null) => void): void;
+        /**
+         * Makes backend skip steps in the script in blackboxed ranges. VM will try leave blacklisted scripts by performing 'step in' several times, finally resorting to 'step out' if unsuccessful. Positions array contains positions where blackbox state is changed. First interval isn't blackboxed. Array should be sorted.
+         * @experimental
+         */
+        post(method: 'Debugger.setBlackboxedRanges', params?: Debugger.SetBlackboxedRangesParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Debugger.setBlackboxedRanges', callback?: (err: Error | null) => void): void;
+        /**
+         * Enables console domain, sends the messages collected so far to the client by means of the <code>messageAdded</code> notification.
+         */
+        post(method: 'Console.enable', callback?: (err: Error | null) => void): void;
+        /**
+         * Disables console domain, prevents further console messages from being reported to the client.
+         */
+        post(method: 'Console.disable', callback?: (err: Error | null) => void): void;
+        /**
+         * Does nothing.
+         */
+        post(method: 'Console.clearMessages', callback?: (err: Error | null) => void): void;
+        post(method: 'Profiler.enable', callback?: (err: Error | null) => void): void;
+        post(method: 'Profiler.disable', callback?: (err: Error | null) => void): void;
+        /**
+         * Changes CPU profiler sampling interval. Must be called before CPU profiles recording started.
+         */
+        post(method: 'Profiler.setSamplingInterval', params?: Profiler.SetSamplingIntervalParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Profiler.setSamplingInterval', callback?: (err: Error | null) => void): void;
+        post(method: 'Profiler.start', callback?: (err: Error | null) => void): void;
+        post(method: 'Profiler.stop', callback?: (err: Error | null, params: Profiler.StopReturnType) => void): void;
+        /**
+         * Enable precise code coverage. Coverage data for JavaScript executed before enabling precise code coverage may be incomplete. Enabling prevents running optimized code and resets execution counters.
+         */
+        post(method: 'Profiler.startPreciseCoverage', params?: Profiler.StartPreciseCoverageParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'Profiler.startPreciseCoverage', callback?: (err: Error | null) => void): void;
+        /**
+         * Disable precise code coverage. Disabling releases unnecessary execution count records and allows executing optimized code.
+         */
+        post(method: 'Profiler.stopPreciseCoverage', callback?: (err: Error | null) => void): void;
+        /**
+         * Collect coverage data for the current isolate, and resets execution counters. Precise code coverage needs to have started.
+         */
+        post(method: 'Profiler.takePreciseCoverage', callback?: (err: Error | null, params: Profiler.TakePreciseCoverageReturnType) => void): void;
+        /**
+         * Collect coverage data for the current isolate. The coverage data may be incomplete due to garbage collection.
+         */
+        post(method: 'Profiler.getBestEffortCoverage', callback?: (err: Error | null, params: Profiler.GetBestEffortCoverageReturnType) => void): void;
+        /**
+         * Enable type profile.
+         * @experimental
+         */
+        post(method: 'Profiler.startTypeProfile', callback?: (err: Error | null) => void): void;
+        /**
+         * Disable type profile. Disabling releases type profile data collected so far.
+         * @experimental
+         */
+        post(method: 'Profiler.stopTypeProfile', callback?: (err: Error | null) => void): void;
+        /**
+         * Collect type profile.
+         * @experimental
+         */
+        post(method: 'Profiler.takeTypeProfile', callback?: (err: Error | null, params: Profiler.TakeTypeProfileReturnType) => void): void;
+        post(method: 'HeapProfiler.enable', callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.disable', callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.startTrackingHeapObjects', params?: HeapProfiler.StartTrackingHeapObjectsParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.startTrackingHeapObjects', callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.stopTrackingHeapObjects', params?: HeapProfiler.StopTrackingHeapObjectsParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.stopTrackingHeapObjects', callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.takeHeapSnapshot', params?: HeapProfiler.TakeHeapSnapshotParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.takeHeapSnapshot', callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.collectGarbage', callback?: (err: Error | null) => void): void;
+        post(
+            method: 'HeapProfiler.getObjectByHeapObjectId',
+            params?: HeapProfiler.GetObjectByHeapObjectIdParameterType,
+            callback?: (err: Error | null, params: HeapProfiler.GetObjectByHeapObjectIdReturnType) => void
+        ): void;
+        post(method: 'HeapProfiler.getObjectByHeapObjectId', callback?: (err: Error | null, params: HeapProfiler.GetObjectByHeapObjectIdReturnType) => void): void;
+        /**
+         * Enables console to refer to the node with given id via $x (see Command Line API for more details $x functions).
+         */
+        post(method: 'HeapProfiler.addInspectedHeapObject', params?: HeapProfiler.AddInspectedHeapObjectParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.addInspectedHeapObject', callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.getHeapObjectId', params?: HeapProfiler.GetHeapObjectIdParameterType, callback?: (err: Error | null, params: HeapProfiler.GetHeapObjectIdReturnType) => void): void;
+        post(method: 'HeapProfiler.getHeapObjectId', callback?: (err: Error | null, params: HeapProfiler.GetHeapObjectIdReturnType) => void): void;
+        post(method: 'HeapProfiler.startSampling', params?: HeapProfiler.StartSamplingParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.startSampling', callback?: (err: Error | null) => void): void;
+        post(method: 'HeapProfiler.stopSampling', callback?: (err: Error | null, params: HeapProfiler.StopSamplingReturnType) => void): void;
+        post(method: 'HeapProfiler.getSamplingProfile', callback?: (err: Error | null, params: HeapProfiler.GetSamplingProfileReturnType) => void): void;
+        /**
+         * Gets supported tracing categories.
+         */
+        post(method: 'NodeTracing.getCategories', callback?: (err: Error | null, params: NodeTracing.GetCategoriesReturnType) => void): void;
+        /**
+         * Start trace events collection.
+         */
+        post(method: 'NodeTracing.start', params?: NodeTracing.StartParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'NodeTracing.start', callback?: (err: Error | null) => void): void;
+        /**
+         * Stop trace events collection. Remaining collected events will be sent as a sequence of
+         * dataCollected events followed by tracingComplete event.
+         */
+        post(method: 'NodeTracing.stop', callback?: (err: Error | null) => void): void;
+        /**
+         * Sends protocol message over session with given id.
+         */
+        post(method: 'NodeWorker.sendMessageToWorker', params?: NodeWorker.SendMessageToWorkerParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'NodeWorker.sendMessageToWorker', callback?: (err: Error | null) => void): void;
+        /**
+         * Instructs the inspector to attach to running workers. Will also attach to new workers
+         * as they start
+         */
+        post(method: 'NodeWorker.enable', params?: NodeWorker.EnableParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'NodeWorker.enable', callback?: (err: Error | null) => void): void;
+        /**
+         * Detaches from all running workers and disables attaching to new workers as they are started.
+         */
+        post(method: 'NodeWorker.disable', callback?: (err: Error | null) => void): void;
+        /**
+         * Detached from the worker with given sessionId.
+         */
+        post(method: 'NodeWorker.detach', params?: NodeWorker.DetachParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'NodeWorker.detach', callback?: (err: Error | null) => void): void;
+        /**
+         * Enable the `NodeRuntime.waitingForDisconnect`.
+         */
+        post(method: 'NodeRuntime.notifyWhenWaitingForDisconnect', params?: NodeRuntime.NotifyWhenWaitingForDisconnectParameterType, callback?: (err: Error | null) => void): void;
+        post(method: 'NodeRuntime.notifyWhenWaitingForDisconnect', callback?: (err: Error | null) => void): void;
+        // Events
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        /**
+         * Emitted when any notification from the V8 Inspector is received.
+         */
+        addListener(event: 'inspectorNotification', listener: (message: InspectorNotification<{}>) => void): this;
+        /**
+         * Issued when new execution context is created.
+         */
+        addListener(event: 'Runtime.executionContextCreated', listener: (message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>) => void): this;
+        /**
+         * Issued when execution context is destroyed.
+         */
+        addListener(event: 'Runtime.executionContextDestroyed', listener: (message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>) => void): this;
+        /**
+         * Issued when all executionContexts were cleared in browser
+         */
+        addListener(event: 'Runtime.executionContextsCleared', listener: () => void): this;
+        /**
+         * Issued when exception was thrown and unhandled.
+         */
+        addListener(event: 'Runtime.exceptionThrown', listener: (message: InspectorNotification<Runtime.ExceptionThrownEventDataType>) => void): this;
+        /**
+         * Issued when unhandled exception was revoked.
+         */
+        addListener(event: 'Runtime.exceptionRevoked', listener: (message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>) => void): this;
+        /**
+         * Issued when console API was called.
+         */
+        addListener(event: 'Runtime.consoleAPICalled', listener: (message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>) => void): this;
+        /**
+         * Issued when object should be inspected (for example, as a result of inspect() command line API call).
+         */
+        addListener(event: 'Runtime.inspectRequested', listener: (message: InspectorNotification<Runtime.InspectRequestedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine parses script. This event is also fired for all known and uncollected scripts upon enabling debugger.
+         */
+        addListener(event: 'Debugger.scriptParsed', listener: (message: InspectorNotification<Debugger.ScriptParsedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine fails to parse the script.
+         */
+        addListener(event: 'Debugger.scriptFailedToParse', listener: (message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>) => void): this;
+        /**
+         * Fired when breakpoint is resolved to an actual script and location.
+         */
+        addListener(event: 'Debugger.breakpointResolved', listener: (message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria.
+         */
+        addListener(event: 'Debugger.paused', listener: (message: InspectorNotification<Debugger.PausedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine resumed execution.
+         */
+        addListener(event: 'Debugger.resumed', listener: () => void): this;
+        /**
+         * Issued when new console message is added.
+         */
+        addListener(event: 'Console.messageAdded', listener: (message: InspectorNotification<Console.MessageAddedEventDataType>) => void): this;
+        /**
+         * Sent when new profile recording is started using console.profile() call.
+         */
+        addListener(event: 'Profiler.consoleProfileStarted', listener: (message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>) => void): this;
+        addListener(event: 'Profiler.consoleProfileFinished', listener: (message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>) => void): this;
+        addListener(event: 'HeapProfiler.addHeapSnapshotChunk', listener: (message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>) => void): this;
+        addListener(event: 'HeapProfiler.resetProfiles', listener: () => void): this;
+        addListener(event: 'HeapProfiler.reportHeapSnapshotProgress', listener: (message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend regularly sends a current value for last seen object id and corresponding timestamp. If the were changes in the heap since last event then one or more heapStatsUpdate events will be sent before a new lastSeenObjectId event.
+         */
+        addListener(event: 'HeapProfiler.lastSeenObjectId', listener: (message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend may send update for one or more fragments
+         */
+        addListener(event: 'HeapProfiler.heapStatsUpdate', listener: (message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>) => void): this;
+        /**
+         * Contains an bucket of collected trace events.
+         */
+        addListener(event: 'NodeTracing.dataCollected', listener: (message: InspectorNotification<NodeTracing.DataCollectedEventDataType>) => void): this;
+        /**
+         * Signals that tracing is stopped and there is no trace buffers pending flush, all data were
+         * delivered via dataCollected events.
+         */
+        addListener(event: 'NodeTracing.tracingComplete', listener: () => void): this;
+        /**
+         * Issued when attached to a worker.
+         */
+        addListener(event: 'NodeWorker.attachedToWorker', listener: (message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>) => void): this;
+        /**
+         * Issued when detached from the worker.
+         */
+        addListener(event: 'NodeWorker.detachedFromWorker', listener: (message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>) => void): this;
+        /**
+         * Notifies about a new protocol message received from the session
+         * (session ID is provided in attachedToWorker notification).
+         */
+        addListener(event: 'NodeWorker.receivedMessageFromWorker', listener: (message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>) => void): this;
+        /**
+         * This event is fired instead of `Runtime.executionContextDestroyed` when
+         * enabled.
+         * It is fired when the Node process finished all code execution and is
+         * waiting for all frontends to disconnect.
+         */
+        addListener(event: 'NodeRuntime.waitingForDisconnect', listener: () => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'inspectorNotification', message: InspectorNotification<{}>): boolean;
+        emit(event: 'Runtime.executionContextCreated', message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>): boolean;
+        emit(event: 'Runtime.executionContextDestroyed', message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>): boolean;
+        emit(event: 'Runtime.executionContextsCleared'): boolean;
+        emit(event: 'Runtime.exceptionThrown', message: InspectorNotification<Runtime.ExceptionThrownEventDataType>): boolean;
+        emit(event: 'Runtime.exceptionRevoked', message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>): boolean;
+        emit(event: 'Runtime.consoleAPICalled', message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>): boolean;
+        emit(event: 'Runtime.inspectRequested', message: InspectorNotification<Runtime.InspectRequestedEventDataType>): boolean;
+        emit(event: 'Debugger.scriptParsed', message: InspectorNotification<Debugger.ScriptParsedEventDataType>): boolean;
+        emit(event: 'Debugger.scriptFailedToParse', message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>): boolean;
+        emit(event: 'Debugger.breakpointResolved', message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>): boolean;
+        emit(event: 'Debugger.paused', message: InspectorNotification<Debugger.PausedEventDataType>): boolean;
+        emit(event: 'Debugger.resumed'): boolean;
+        emit(event: 'Console.messageAdded', message: InspectorNotification<Console.MessageAddedEventDataType>): boolean;
+        emit(event: 'Profiler.consoleProfileStarted', message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>): boolean;
+        emit(event: 'Profiler.consoleProfileFinished', message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>): boolean;
+        emit(event: 'HeapProfiler.addHeapSnapshotChunk', message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>): boolean;
+        emit(event: 'HeapProfiler.resetProfiles'): boolean;
+        emit(event: 'HeapProfiler.reportHeapSnapshotProgress', message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>): boolean;
+        emit(event: 'HeapProfiler.lastSeenObjectId', message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>): boolean;
+        emit(event: 'HeapProfiler.heapStatsUpdate', message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>): boolean;
+        emit(event: 'NodeTracing.dataCollected', message: InspectorNotification<NodeTracing.DataCollectedEventDataType>): boolean;
+        emit(event: 'NodeTracing.tracingComplete'): boolean;
+        emit(event: 'NodeWorker.attachedToWorker', message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>): boolean;
+        emit(event: 'NodeWorker.detachedFromWorker', message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>): boolean;
+        emit(event: 'NodeWorker.receivedMessageFromWorker', message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>): boolean;
+        emit(event: 'NodeRuntime.waitingForDisconnect'): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        /**
+         * Emitted when any notification from the V8 Inspector is received.
+         */
+        on(event: 'inspectorNotification', listener: (message: InspectorNotification<{}>) => void): this;
+        /**
+         * Issued when new execution context is created.
+         */
+        on(event: 'Runtime.executionContextCreated', listener: (message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>) => void): this;
+        /**
+         * Issued when execution context is destroyed.
+         */
+        on(event: 'Runtime.executionContextDestroyed', listener: (message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>) => void): this;
+        /**
+         * Issued when all executionContexts were cleared in browser
+         */
+        on(event: 'Runtime.executionContextsCleared', listener: () => void): this;
+        /**
+         * Issued when exception was thrown and unhandled.
+         */
+        on(event: 'Runtime.exceptionThrown', listener: (message: InspectorNotification<Runtime.ExceptionThrownEventDataType>) => void): this;
+        /**
+         * Issued when unhandled exception was revoked.
+         */
+        on(event: 'Runtime.exceptionRevoked', listener: (message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>) => void): this;
+        /**
+         * Issued when console API was called.
+         */
+        on(event: 'Runtime.consoleAPICalled', listener: (message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>) => void): this;
+        /**
+         * Issued when object should be inspected (for example, as a result of inspect() command line API call).
+         */
+        on(event: 'Runtime.inspectRequested', listener: (message: InspectorNotification<Runtime.InspectRequestedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine parses script. This event is also fired for all known and uncollected scripts upon enabling debugger.
+         */
+        on(event: 'Debugger.scriptParsed', listener: (message: InspectorNotification<Debugger.ScriptParsedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine fails to parse the script.
+         */
+        on(event: 'Debugger.scriptFailedToParse', listener: (message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>) => void): this;
+        /**
+         * Fired when breakpoint is resolved to an actual script and location.
+         */
+        on(event: 'Debugger.breakpointResolved', listener: (message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria.
+         */
+        on(event: 'Debugger.paused', listener: (message: InspectorNotification<Debugger.PausedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine resumed execution.
+         */
+        on(event: 'Debugger.resumed', listener: () => void): this;
+        /**
+         * Issued when new console message is added.
+         */
+        on(event: 'Console.messageAdded', listener: (message: InspectorNotification<Console.MessageAddedEventDataType>) => void): this;
+        /**
+         * Sent when new profile recording is started using console.profile() call.
+         */
+        on(event: 'Profiler.consoleProfileStarted', listener: (message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>) => void): this;
+        on(event: 'Profiler.consoleProfileFinished', listener: (message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>) => void): this;
+        on(event: 'HeapProfiler.addHeapSnapshotChunk', listener: (message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>) => void): this;
+        on(event: 'HeapProfiler.resetProfiles', listener: () => void): this;
+        on(event: 'HeapProfiler.reportHeapSnapshotProgress', listener: (message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend regularly sends a current value for last seen object id and corresponding timestamp. If the were changes in the heap since last event then one or more heapStatsUpdate events will be sent before a new lastSeenObjectId event.
+         */
+        on(event: 'HeapProfiler.lastSeenObjectId', listener: (message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend may send update for one or more fragments
+         */
+        on(event: 'HeapProfiler.heapStatsUpdate', listener: (message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>) => void): this;
+        /**
+         * Contains an bucket of collected trace events.
+         */
+        on(event: 'NodeTracing.dataCollected', listener: (message: InspectorNotification<NodeTracing.DataCollectedEventDataType>) => void): this;
+        /**
+         * Signals that tracing is stopped and there is no trace buffers pending flush, all data were
+         * delivered via dataCollected events.
+         */
+        on(event: 'NodeTracing.tracingComplete', listener: () => void): this;
+        /**
+         * Issued when attached to a worker.
+         */
+        on(event: 'NodeWorker.attachedToWorker', listener: (message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>) => void): this;
+        /**
+         * Issued when detached from the worker.
+         */
+        on(event: 'NodeWorker.detachedFromWorker', listener: (message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>) => void): this;
+        /**
+         * Notifies about a new protocol message received from the session
+         * (session ID is provided in attachedToWorker notification).
+         */
+        on(event: 'NodeWorker.receivedMessageFromWorker', listener: (message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>) => void): this;
+        /**
+         * This event is fired instead of `Runtime.executionContextDestroyed` when
+         * enabled.
+         * It is fired when the Node process finished all code execution and is
+         * waiting for all frontends to disconnect.
+         */
+        on(event: 'NodeRuntime.waitingForDisconnect', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        /**
+         * Emitted when any notification from the V8 Inspector is received.
+         */
+        once(event: 'inspectorNotification', listener: (message: InspectorNotification<{}>) => void): this;
+        /**
+         * Issued when new execution context is created.
+         */
+        once(event: 'Runtime.executionContextCreated', listener: (message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>) => void): this;
+        /**
+         * Issued when execution context is destroyed.
+         */
+        once(event: 'Runtime.executionContextDestroyed', listener: (message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>) => void): this;
+        /**
+         * Issued when all executionContexts were cleared in browser
+         */
+        once(event: 'Runtime.executionContextsCleared', listener: () => void): this;
+        /**
+         * Issued when exception was thrown and unhandled.
+         */
+        once(event: 'Runtime.exceptionThrown', listener: (message: InspectorNotification<Runtime.ExceptionThrownEventDataType>) => void): this;
+        /**
+         * Issued when unhandled exception was revoked.
+         */
+        once(event: 'Runtime.exceptionRevoked', listener: (message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>) => void): this;
+        /**
+         * Issued when console API was called.
+         */
+        once(event: 'Runtime.consoleAPICalled', listener: (message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>) => void): this;
+        /**
+         * Issued when object should be inspected (for example, as a result of inspect() command line API call).
+         */
+        once(event: 'Runtime.inspectRequested', listener: (message: InspectorNotification<Runtime.InspectRequestedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine parses script. This event is also fired for all known and uncollected scripts upon enabling debugger.
+         */
+        once(event: 'Debugger.scriptParsed', listener: (message: InspectorNotification<Debugger.ScriptParsedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine fails to parse the script.
+         */
+        once(event: 'Debugger.scriptFailedToParse', listener: (message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>) => void): this;
+        /**
+         * Fired when breakpoint is resolved to an actual script and location.
+         */
+        once(event: 'Debugger.breakpointResolved', listener: (message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria.
+         */
+        once(event: 'Debugger.paused', listener: (message: InspectorNotification<Debugger.PausedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine resumed execution.
+         */
+        once(event: 'Debugger.resumed', listener: () => void): this;
+        /**
+         * Issued when new console message is added.
+         */
+        once(event: 'Console.messageAdded', listener: (message: InspectorNotification<Console.MessageAddedEventDataType>) => void): this;
+        /**
+         * Sent when new profile recording is started using console.profile() call.
+         */
+        once(event: 'Profiler.consoleProfileStarted', listener: (message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>) => void): this;
+        once(event: 'Profiler.consoleProfileFinished', listener: (message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>) => void): this;
+        once(event: 'HeapProfiler.addHeapSnapshotChunk', listener: (message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>) => void): this;
+        once(event: 'HeapProfiler.resetProfiles', listener: () => void): this;
+        once(event: 'HeapProfiler.reportHeapSnapshotProgress', listener: (message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend regularly sends a current value for last seen object id and corresponding timestamp. If the were changes in the heap since last event then one or more heapStatsUpdate events will be sent before a new lastSeenObjectId event.
+         */
+        once(event: 'HeapProfiler.lastSeenObjectId', listener: (message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend may send update for one or more fragments
+         */
+        once(event: 'HeapProfiler.heapStatsUpdate', listener: (message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>) => void): this;
+        /**
+         * Contains an bucket of collected trace events.
+         */
+        once(event: 'NodeTracing.dataCollected', listener: (message: InspectorNotification<NodeTracing.DataCollectedEventDataType>) => void): this;
+        /**
+         * Signals that tracing is stopped and there is no trace buffers pending flush, all data were
+         * delivered via dataCollected events.
+         */
+        once(event: 'NodeTracing.tracingComplete', listener: () => void): this;
+        /**
+         * Issued when attached to a worker.
+         */
+        once(event: 'NodeWorker.attachedToWorker', listener: (message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>) => void): this;
+        /**
+         * Issued when detached from the worker.
+         */
+        once(event: 'NodeWorker.detachedFromWorker', listener: (message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>) => void): this;
+        /**
+         * Notifies about a new protocol message received from the session
+         * (session ID is provided in attachedToWorker notification).
+         */
+        once(event: 'NodeWorker.receivedMessageFromWorker', listener: (message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>) => void): this;
+        /**
+         * This event is fired instead of `Runtime.executionContextDestroyed` when
+         * enabled.
+         * It is fired when the Node process finished all code execution and is
+         * waiting for all frontends to disconnect.
+         */
+        once(event: 'NodeRuntime.waitingForDisconnect', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        /**
+         * Emitted when any notification from the V8 Inspector is received.
+         */
+        prependListener(event: 'inspectorNotification', listener: (message: InspectorNotification<{}>) => void): this;
+        /**
+         * Issued when new execution context is created.
+         */
+        prependListener(event: 'Runtime.executionContextCreated', listener: (message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>) => void): this;
+        /**
+         * Issued when execution context is destroyed.
+         */
+        prependListener(event: 'Runtime.executionContextDestroyed', listener: (message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>) => void): this;
+        /**
+         * Issued when all executionContexts were cleared in browser
+         */
+        prependListener(event: 'Runtime.executionContextsCleared', listener: () => void): this;
+        /**
+         * Issued when exception was thrown and unhandled.
+         */
+        prependListener(event: 'Runtime.exceptionThrown', listener: (message: InspectorNotification<Runtime.ExceptionThrownEventDataType>) => void): this;
+        /**
+         * Issued when unhandled exception was revoked.
+         */
+        prependListener(event: 'Runtime.exceptionRevoked', listener: (message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>) => void): this;
+        /**
+         * Issued when console API was called.
+         */
+        prependListener(event: 'Runtime.consoleAPICalled', listener: (message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>) => void): this;
+        /**
+         * Issued when object should be inspected (for example, as a result of inspect() command line API call).
+         */
+        prependListener(event: 'Runtime.inspectRequested', listener: (message: InspectorNotification<Runtime.InspectRequestedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine parses script. This event is also fired for all known and uncollected scripts upon enabling debugger.
+         */
+        prependListener(event: 'Debugger.scriptParsed', listener: (message: InspectorNotification<Debugger.ScriptParsedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine fails to parse the script.
+         */
+        prependListener(event: 'Debugger.scriptFailedToParse', listener: (message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>) => void): this;
+        /**
+         * Fired when breakpoint is resolved to an actual script and location.
+         */
+        prependListener(event: 'Debugger.breakpointResolved', listener: (message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria.
+         */
+        prependListener(event: 'Debugger.paused', listener: (message: InspectorNotification<Debugger.PausedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine resumed execution.
+         */
+        prependListener(event: 'Debugger.resumed', listener: () => void): this;
+        /**
+         * Issued when new console message is added.
+         */
+        prependListener(event: 'Console.messageAdded', listener: (message: InspectorNotification<Console.MessageAddedEventDataType>) => void): this;
+        /**
+         * Sent when new profile recording is started using console.profile() call.
+         */
+        prependListener(event: 'Profiler.consoleProfileStarted', listener: (message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>) => void): this;
+        prependListener(event: 'Profiler.consoleProfileFinished', listener: (message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>) => void): this;
+        prependListener(event: 'HeapProfiler.addHeapSnapshotChunk', listener: (message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>) => void): this;
+        prependListener(event: 'HeapProfiler.resetProfiles', listener: () => void): this;
+        prependListener(event: 'HeapProfiler.reportHeapSnapshotProgress', listener: (message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend regularly sends a current value for last seen object id and corresponding timestamp. If the were changes in the heap since last event then one or more heapStatsUpdate events will be sent before a new lastSeenObjectId event.
+         */
+        prependListener(event: 'HeapProfiler.lastSeenObjectId', listener: (message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend may send update for one or more fragments
+         */
+        prependListener(event: 'HeapProfiler.heapStatsUpdate', listener: (message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>) => void): this;
+        /**
+         * Contains an bucket of collected trace events.
+         */
+        prependListener(event: 'NodeTracing.dataCollected', listener: (message: InspectorNotification<NodeTracing.DataCollectedEventDataType>) => void): this;
+        /**
+         * Signals that tracing is stopped and there is no trace buffers pending flush, all data were
+         * delivered via dataCollected events.
+         */
+        prependListener(event: 'NodeTracing.tracingComplete', listener: () => void): this;
+        /**
+         * Issued when attached to a worker.
+         */
+        prependListener(event: 'NodeWorker.attachedToWorker', listener: (message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>) => void): this;
+        /**
+         * Issued when detached from the worker.
+         */
+        prependListener(event: 'NodeWorker.detachedFromWorker', listener: (message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>) => void): this;
+        /**
+         * Notifies about a new protocol message received from the session
+         * (session ID is provided in attachedToWorker notification).
+         */
+        prependListener(event: 'NodeWorker.receivedMessageFromWorker', listener: (message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>) => void): this;
+        /**
+         * This event is fired instead of `Runtime.executionContextDestroyed` when
+         * enabled.
+         * It is fired when the Node process finished all code execution and is
+         * waiting for all frontends to disconnect.
+         */
+        prependListener(event: 'NodeRuntime.waitingForDisconnect', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        /**
+         * Emitted when any notification from the V8 Inspector is received.
+         */
+        prependOnceListener(event: 'inspectorNotification', listener: (message: InspectorNotification<{}>) => void): this;
+        /**
+         * Issued when new execution context is created.
+         */
+        prependOnceListener(event: 'Runtime.executionContextCreated', listener: (message: InspectorNotification<Runtime.ExecutionContextCreatedEventDataType>) => void): this;
+        /**
+         * Issued when execution context is destroyed.
+         */
+        prependOnceListener(event: 'Runtime.executionContextDestroyed', listener: (message: InspectorNotification<Runtime.ExecutionContextDestroyedEventDataType>) => void): this;
+        /**
+         * Issued when all executionContexts were cleared in browser
+         */
+        prependOnceListener(event: 'Runtime.executionContextsCleared', listener: () => void): this;
+        /**
+         * Issued when exception was thrown and unhandled.
+         */
+        prependOnceListener(event: 'Runtime.exceptionThrown', listener: (message: InspectorNotification<Runtime.ExceptionThrownEventDataType>) => void): this;
+        /**
+         * Issued when unhandled exception was revoked.
+         */
+        prependOnceListener(event: 'Runtime.exceptionRevoked', listener: (message: InspectorNotification<Runtime.ExceptionRevokedEventDataType>) => void): this;
+        /**
+         * Issued when console API was called.
+         */
+        prependOnceListener(event: 'Runtime.consoleAPICalled', listener: (message: InspectorNotification<Runtime.ConsoleAPICalledEventDataType>) => void): this;
+        /**
+         * Issued when object should be inspected (for example, as a result of inspect() command line API call).
+         */
+        prependOnceListener(event: 'Runtime.inspectRequested', listener: (message: InspectorNotification<Runtime.InspectRequestedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine parses script. This event is also fired for all known and uncollected scripts upon enabling debugger.
+         */
+        prependOnceListener(event: 'Debugger.scriptParsed', listener: (message: InspectorNotification<Debugger.ScriptParsedEventDataType>) => void): this;
+        /**
+         * Fired when virtual machine fails to parse the script.
+         */
+        prependOnceListener(event: 'Debugger.scriptFailedToParse', listener: (message: InspectorNotification<Debugger.ScriptFailedToParseEventDataType>) => void): this;
+        /**
+         * Fired when breakpoint is resolved to an actual script and location.
+         */
+        prependOnceListener(event: 'Debugger.breakpointResolved', listener: (message: InspectorNotification<Debugger.BreakpointResolvedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine stopped on breakpoint or exception or any other stop criteria.
+         */
+        prependOnceListener(event: 'Debugger.paused', listener: (message: InspectorNotification<Debugger.PausedEventDataType>) => void): this;
+        /**
+         * Fired when the virtual machine resumed execution.
+         */
+        prependOnceListener(event: 'Debugger.resumed', listener: () => void): this;
+        /**
+         * Issued when new console message is added.
+         */
+        prependOnceListener(event: 'Console.messageAdded', listener: (message: InspectorNotification<Console.MessageAddedEventDataType>) => void): this;
+        /**
+         * Sent when new profile recording is started using console.profile() call.
+         */
+        prependOnceListener(event: 'Profiler.consoleProfileStarted', listener: (message: InspectorNotification<Profiler.ConsoleProfileStartedEventDataType>) => void): this;
+        prependOnceListener(event: 'Profiler.consoleProfileFinished', listener: (message: InspectorNotification<Profiler.ConsoleProfileFinishedEventDataType>) => void): this;
+        prependOnceListener(event: 'HeapProfiler.addHeapSnapshotChunk', listener: (message: InspectorNotification<HeapProfiler.AddHeapSnapshotChunkEventDataType>) => void): this;
+        prependOnceListener(event: 'HeapProfiler.resetProfiles', listener: () => void): this;
+        prependOnceListener(event: 'HeapProfiler.reportHeapSnapshotProgress', listener: (message: InspectorNotification<HeapProfiler.ReportHeapSnapshotProgressEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend regularly sends a current value for last seen object id and corresponding timestamp. If the were changes in the heap since last event then one or more heapStatsUpdate events will be sent before a new lastSeenObjectId event.
+         */
+        prependOnceListener(event: 'HeapProfiler.lastSeenObjectId', listener: (message: InspectorNotification<HeapProfiler.LastSeenObjectIdEventDataType>) => void): this;
+        /**
+         * If heap objects tracking has been started then backend may send update for one or more fragments
+         */
+        prependOnceListener(event: 'HeapProfiler.heapStatsUpdate', listener: (message: InspectorNotification<HeapProfiler.HeapStatsUpdateEventDataType>) => void): this;
+        /**
+         * Contains an bucket of collected trace events.
+         */
+        prependOnceListener(event: 'NodeTracing.dataCollected', listener: (message: InspectorNotification<NodeTracing.DataCollectedEventDataType>) => void): this;
+        /**
+         * Signals that tracing is stopped and there is no trace buffers pending flush, all data were
+         * delivered via dataCollected events.
+         */
+        prependOnceListener(event: 'NodeTracing.tracingComplete', listener: () => void): this;
+        /**
+         * Issued when attached to a worker.
+         */
+        prependOnceListener(event: 'NodeWorker.attachedToWorker', listener: (message: InspectorNotification<NodeWorker.AttachedToWorkerEventDataType>) => void): this;
+        /**
+         * Issued when detached from the worker.
+         */
+        prependOnceListener(event: 'NodeWorker.detachedFromWorker', listener: (message: InspectorNotification<NodeWorker.DetachedFromWorkerEventDataType>) => void): this;
+        /**
+         * Notifies about a new protocol message received from the session
+         * (session ID is provided in attachedToWorker notification).
+         */
+        prependOnceListener(event: 'NodeWorker.receivedMessageFromWorker', listener: (message: InspectorNotification<NodeWorker.ReceivedMessageFromWorkerEventDataType>) => void): this;
+        /**
+         * This event is fired instead of `Runtime.executionContextDestroyed` when
+         * enabled.
+         * It is fired when the Node process finished all code execution and is
+         * waiting for all frontends to disconnect.
+         */
+        prependOnceListener(event: 'NodeRuntime.waitingForDisconnect', listener: () => void): this;
+    }
+    /**
+     * Activate inspector on host and port. Equivalent to`node --inspect=[[host:]port]`, but can be done programmatically after node has
+     * started.
+     *
+     * If wait is `true`, will block until a client has connected to the inspect port
+     * and flow control has been passed to the debugger client.
+     *
+     * See the `security warning` regarding the `host`parameter usage.
+     * @param [port='what was specified on the CLI'] Port to listen on for inspector connections. Optional.
+     * @param [host='what was specified on the CLI'] Host to listen on for inspector connections. Optional.
+     * @param [wait=false] Block until a client has connected. Optional.
+     */
+    function open(port?: number, host?: string, wait?: boolean): void;
+    /**
+     * Deactivate the inspector. Blocks until there are no active connections.
+     */
+    function close(): void;
+    /**
+     * Return the URL of the active inspector, or `undefined` if there is none.
+     *
+     * ```console
+     * $ node --inspect -p 'inspector.url()'
+     * Debugger listening on ws://127.0.0.1:9229/166e272e-7a30-4d09-97ce-f1c012b43c34
+     * For help, see: https://nodejs.org/en/docs/inspector
+     * ws://127.0.0.1:9229/166e272e-7a30-4d09-97ce-f1c012b43c34
+     *
+     * $ node --inspect=localhost:3000 -p 'inspector.url()'
+     * Debugger listening on ws://localhost:3000/51cf8d0e-3c36-4c59-8efd-54519839e56a
+     * For help, see: https://nodejs.org/en/docs/inspector
+     * ws://localhost:3000/51cf8d0e-3c36-4c59-8efd-54519839e56a
+     *
+     * $ node -p 'inspector.url()'
+     * undefined
+     * ```
+     */
+    function url(): string | undefined;
+    /**
+     * Blocks until a client (existing or connected later) has sent`Runtime.runIfWaitingForDebugger` command.
+     *
+     * An exception will be thrown if there is no active inspector.
+     * @since v12.7.0
+     */
+    function waitForDebugger(): void;
+}
+/**
+ * The inspector module provides an API for interacting with the V8 inspector.
+ */
+declare module 'node:inspector' {
+    import inspector = require('inspector');
+    export = inspector;
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/module.d.ts b/igv_component/node_modules/@types/node/ts4.8/module.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d83aec94aae2df96e4028c6fdb09bf61051e5a38
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/module.d.ts
@@ -0,0 +1,114 @@
+/**
+ * @since v0.3.7
+ */
+declare module 'module' {
+    import { URL } from 'node:url';
+    namespace Module {
+        /**
+         * The `module.syncBuiltinESMExports()` method updates all the live bindings for
+         * builtin `ES Modules` to match the properties of the `CommonJS` exports. It
+         * does not add or remove exported names from the `ES Modules`.
+         *
+         * ```js
+         * const fs = require('fs');
+         * const assert = require('assert');
+         * const { syncBuiltinESMExports } = require('module');
+         *
+         * fs.readFile = newAPI;
+         *
+         * delete fs.readFileSync;
+         *
+         * function newAPI() {
+         *   // ...
+         * }
+         *
+         * fs.newAPI = newAPI;
+         *
+         * syncBuiltinESMExports();
+         *
+         * import('fs').then((esmFS) => {
+         *   // It syncs the existing readFile property with the new value
+         *   assert.strictEqual(esmFS.readFile, newAPI);
+         *   // readFileSync has been deleted from the required fs
+         *   assert.strictEqual('readFileSync' in fs, false);
+         *   // syncBuiltinESMExports() does not remove readFileSync from esmFS
+         *   assert.strictEqual('readFileSync' in esmFS, true);
+         *   // syncBuiltinESMExports() does not add names
+         *   assert.strictEqual(esmFS.newAPI, undefined);
+         * });
+         * ```
+         * @since v12.12.0
+         */
+        function syncBuiltinESMExports(): void;
+        /**
+         * `path` is the resolved path for the file for which a corresponding source map
+         * should be fetched.
+         * @since v13.7.0, v12.17.0
+         */
+        function findSourceMap(path: string, error?: Error): SourceMap;
+        interface SourceMapPayload {
+            file: string;
+            version: number;
+            sources: string[];
+            sourcesContent: string[];
+            names: string[];
+            mappings: string;
+            sourceRoot: string;
+        }
+        interface SourceMapping {
+            generatedLine: number;
+            generatedColumn: number;
+            originalSource: string;
+            originalLine: number;
+            originalColumn: number;
+        }
+        /**
+         * @since v13.7.0, v12.17.0
+         */
+        class SourceMap {
+            /**
+             * Getter for the payload used to construct the `SourceMap` instance.
+             */
+            readonly payload: SourceMapPayload;
+            constructor(payload: SourceMapPayload);
+            /**
+             * Given a line number and column number in the generated source file, returns
+             * an object representing the position in the original file. The object returned
+             * consists of the following keys:
+             */
+            findEntry(line: number, column: number): SourceMapping;
+        }
+    }
+    interface Module extends NodeModule {}
+    class Module {
+        static runMain(): void;
+        static wrap(code: string): string;
+        static createRequire(path: string | URL): NodeRequire;
+        static builtinModules: string[];
+        static Module: typeof Module;
+        constructor(id: string, parent?: Module);
+    }
+    global {
+        interface ImportMeta {
+            url: string;
+            /**
+             * @experimental
+             * This feature is only available with the `--experimental-import-meta-resolve`
+             * command flag enabled.
+             *
+             * Provides a module-relative resolution function scoped to each module, returning
+             * the URL string.
+             *
+             * @param specified The module specifier to resolve relative to `parent`.
+             * @param parent The absolute parent module URL to resolve from. If none
+             * is specified, the value of `import.meta.url` is used as the default.
+             */
+            resolve?(specified: string, parent?: string | URL): Promise<string>;
+        }
+    }
+    export = Module;
+}
+declare module 'node:module' {
+    import module = require('module');
+    export = module;
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/net.d.ts b/igv_component/node_modules/@types/node/ts4.8/net.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..eaa08bcf36a046c85720398f9da0a06f4ff108bd
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/net.d.ts
@@ -0,0 +1,838 @@
+/**
+ * > Stability: 2 - Stable
+ *
+ * The `net` module provides an asynchronous network API for creating stream-based
+ * TCP or `IPC` servers ({@link createServer}) and clients
+ * ({@link createConnection}).
+ *
+ * It can be accessed using:
+ *
+ * ```js
+ * const net = require('net');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/net.js)
+ */
+declare module 'net' {
+    import * as stream from 'node:stream';
+    import { Abortable, EventEmitter } from 'node:events';
+    import * as dns from 'node:dns';
+    type LookupFunction = (hostname: string, options: dns.LookupOneOptions, callback: (err: NodeJS.ErrnoException | null, address: string, family: number) => void) => void;
+    interface AddressInfo {
+        address: string;
+        family: string;
+        port: number;
+    }
+    interface SocketConstructorOpts {
+        fd?: number | undefined;
+        allowHalfOpen?: boolean | undefined;
+        readable?: boolean | undefined;
+        writable?: boolean | undefined;
+        signal?: AbortSignal;
+    }
+    interface OnReadOpts {
+        buffer: Uint8Array | (() => Uint8Array);
+        /**
+         * This function is called for every chunk of incoming data.
+         * Two arguments are passed to it: the number of bytes written to buffer and a reference to buffer.
+         * Return false from this function to implicitly pause() the socket.
+         */
+        callback(bytesWritten: number, buf: Uint8Array): boolean;
+    }
+    interface ConnectOpts {
+        /**
+         * If specified, incoming data is stored in a single buffer and passed to the supplied callback when data arrives on the socket.
+         * Note: this will cause the streaming functionality to not provide any data, however events like 'error', 'end', and 'close' will
+         * still be emitted as normal and methods like pause() and resume() will also behave as expected.
+         */
+        onread?: OnReadOpts | undefined;
+    }
+    interface TcpSocketConnectOpts extends ConnectOpts {
+        port: number;
+        host?: string | undefined;
+        localAddress?: string | undefined;
+        localPort?: number | undefined;
+        hints?: number | undefined;
+        family?: number | undefined;
+        lookup?: LookupFunction | undefined;
+        noDelay?: boolean | undefined;
+        keepAlive?: boolean | undefined;
+        keepAliveInitialDelay?: number | undefined;
+    }
+    interface IpcSocketConnectOpts extends ConnectOpts {
+        path: string;
+    }
+    type SocketConnectOpts = TcpSocketConnectOpts | IpcSocketConnectOpts;
+    type SocketReadyState = 'opening' | 'open' | 'readOnly' | 'writeOnly' | 'closed';
+    /**
+     * This class is an abstraction of a TCP socket or a streaming `IPC` endpoint
+     * (uses named pipes on Windows, and Unix domain sockets otherwise). It is also
+     * an `EventEmitter`.
+     *
+     * A `net.Socket` can be created by the user and used directly to interact with
+     * a server. For example, it is returned by {@link createConnection},
+     * so the user can use it to talk to the server.
+     *
+     * It can also be created by Node.js and passed to the user when a connection
+     * is received. For example, it is passed to the listeners of a `'connection'` event emitted on a {@link Server}, so the user can use
+     * it to interact with the client.
+     * @since v0.3.4
+     */
+    class Socket extends stream.Duplex {
+        constructor(options?: SocketConstructorOpts);
+        /**
+         * Sends data on the socket. The second parameter specifies the encoding in the
+         * case of a string. It defaults to UTF8 encoding.
+         *
+         * Returns `true` if the entire data was flushed successfully to the kernel
+         * buffer. Returns `false` if all or part of the data was queued in user memory.`'drain'` will be emitted when the buffer is again free.
+         *
+         * The optional `callback` parameter will be executed when the data is finally
+         * written out, which may not be immediately.
+         *
+         * See `Writable` stream `write()` method for more
+         * information.
+         * @since v0.1.90
+         * @param [encoding='utf8'] Only used when data is `string`.
+         */
+        write(buffer: Uint8Array | string, cb?: (err?: Error) => void): boolean;
+        write(str: Uint8Array | string, encoding?: BufferEncoding, cb?: (err?: Error) => void): boolean;
+        /**
+         * Initiate a connection on a given socket.
+         *
+         * Possible signatures:
+         *
+         * * `socket.connect(options[, connectListener])`
+         * * `socket.connect(path[, connectListener])` for `IPC` connections.
+         * * `socket.connect(port[, host][, connectListener])` for TCP connections.
+         * * Returns: `net.Socket` The socket itself.
+         *
+         * This function is asynchronous. When the connection is established, the `'connect'` event will be emitted. If there is a problem connecting,
+         * instead of a `'connect'` event, an `'error'` event will be emitted with
+         * the error passed to the `'error'` listener.
+         * The last parameter `connectListener`, if supplied, will be added as a listener
+         * for the `'connect'` event **once**.
+         *
+         * This function should only be used for reconnecting a socket after`'close'` has been emitted or otherwise it may lead to undefined
+         * behavior.
+         */
+        connect(options: SocketConnectOpts, connectionListener?: () => void): this;
+        connect(port: number, host: string, connectionListener?: () => void): this;
+        connect(port: number, connectionListener?: () => void): this;
+        connect(path: string, connectionListener?: () => void): this;
+        /**
+         * Set the encoding for the socket as a `Readable Stream`. See `readable.setEncoding()` for more information.
+         * @since v0.1.90
+         * @return The socket itself.
+         */
+        setEncoding(encoding?: BufferEncoding): this;
+        /**
+         * Pauses the reading of data. That is, `'data'` events will not be emitted.
+         * Useful to throttle back an upload.
+         * @return The socket itself.
+         */
+        pause(): this;
+        /**
+         * Resumes reading after a call to `socket.pause()`.
+         * @return The socket itself.
+         */
+        resume(): this;
+        /**
+         * Sets the socket to timeout after `timeout` milliseconds of inactivity on
+         * the socket. By default `net.Socket` do not have a timeout.
+         *
+         * When an idle timeout is triggered the socket will receive a `'timeout'` event but the connection will not be severed. The user must manually call `socket.end()` or `socket.destroy()` to
+         * end the connection.
+         *
+         * ```js
+         * socket.setTimeout(3000);
+         * socket.on('timeout', () => {
+         *   console.log('socket timeout');
+         *   socket.end();
+         * });
+         * ```
+         *
+         * If `timeout` is 0, then the existing idle timeout is disabled.
+         *
+         * The optional `callback` parameter will be added as a one-time listener for the `'timeout'` event.
+         * @since v0.1.90
+         * @return The socket itself.
+         */
+        setTimeout(timeout: number, callback?: () => void): this;
+        /**
+         * Enable/disable the use of Nagle's algorithm.
+         *
+         * When a TCP connection is created, it will have Nagle's algorithm enabled.
+         *
+         * Nagle's algorithm delays data before it is sent via the network. It attempts
+         * to optimize throughput at the expense of latency.
+         *
+         * Passing `true` for `noDelay` or not passing an argument will disable Nagle's
+         * algorithm for the socket. Passing `false` for `noDelay` will enable Nagle's
+         * algorithm.
+         * @since v0.1.90
+         * @param [noDelay=true]
+         * @return The socket itself.
+         */
+        setNoDelay(noDelay?: boolean): this;
+        /**
+         * Enable/disable keep-alive functionality, and optionally set the initial
+         * delay before the first keepalive probe is sent on an idle socket.
+         *
+         * Set `initialDelay` (in milliseconds) to set the delay between the last
+         * data packet received and the first keepalive probe. Setting `0` for`initialDelay` will leave the value unchanged from the default
+         * (or previous) setting.
+         *
+         * Enabling the keep-alive functionality will set the following socket options:
+         *
+         * * `SO_KEEPALIVE=1`
+         * * `TCP_KEEPIDLE=initialDelay`
+         * * `TCP_KEEPCNT=10`
+         * * `TCP_KEEPINTVL=1`
+         * @since v0.1.92
+         * @param [enable=false]
+         * @param [initialDelay=0]
+         * @return The socket itself.
+         */
+        setKeepAlive(enable?: boolean, initialDelay?: number): this;
+        /**
+         * Returns the bound `address`, the address `family` name and `port` of the
+         * socket as reported by the operating system:`{ port: 12346, family: 'IPv4', address: '127.0.0.1' }`
+         * @since v0.1.90
+         */
+        address(): AddressInfo | {};
+        /**
+         * Calling `unref()` on a socket will allow the program to exit if this is the only
+         * active socket in the event system. If the socket is already `unref`ed calling`unref()` again will have no effect.
+         * @since v0.9.1
+         * @return The socket itself.
+         */
+        unref(): this;
+        /**
+         * Opposite of `unref()`, calling `ref()` on a previously `unref`ed socket will _not_ let the program exit if it's the only socket left (the default behavior).
+         * If the socket is `ref`ed calling `ref` again will have no effect.
+         * @since v0.9.1
+         * @return The socket itself.
+         */
+        ref(): this;
+        /**
+         * This property shows the number of characters buffered for writing. The buffer
+         * may contain strings whose length after encoding is not yet known. So this number
+         * is only an approximation of the number of bytes in the buffer.
+         *
+         * `net.Socket` has the property that `socket.write()` always works. This is to
+         * help users get up and running quickly. The computer cannot always keep up
+         * with the amount of data that is written to a socket. The network connection
+         * simply might be too slow. Node.js will internally queue up the data written to a
+         * socket and send it out over the wire when it is possible.
+         *
+         * The consequence of this internal buffering is that memory may grow.
+         * Users who experience large or growing `bufferSize` should attempt to
+         * "throttle" the data flows in their program with `socket.pause()` and `socket.resume()`.
+         * @since v0.3.8
+         * @deprecated Since v14.6.0 - Use `writableLength` instead.
+         */
+        readonly bufferSize: number;
+        /**
+         * The amount of received bytes.
+         * @since v0.5.3
+         */
+        readonly bytesRead: number;
+        /**
+         * The amount of bytes sent.
+         * @since v0.5.3
+         */
+        readonly bytesWritten: number;
+        /**
+         * If `true`,`socket.connect(options[, connectListener])` was
+         * called and has not yet finished. It will stay `true` until the socket becomes
+         * connected, then it is set to `false` and the `'connect'` event is emitted. Note
+         * that the `socket.connect(options[, connectListener])` callback is a listener for the `'connect'` event.
+         * @since v6.1.0
+         */
+        readonly connecting: boolean;
+        /**
+         * See `writable.destroyed` for further details.
+         */
+        readonly destroyed: boolean;
+        /**
+         * The string representation of the local IP address the remote client is
+         * connecting on. For example, in a server listening on `'0.0.0.0'`, if a client
+         * connects on `'192.168.1.1'`, the value of `socket.localAddress` would be`'192.168.1.1'`.
+         * @since v0.9.6
+         */
+        readonly localAddress?: string;
+        /**
+         * The numeric representation of the local port. For example, `80` or `21`.
+         * @since v0.9.6
+         */
+        readonly localPort?: number;
+        /**
+         * This property represents the state of the connection as a string.
+         * @see {https://nodejs.org/api/net.html#socketreadystate}
+         * @since v0.5.0
+         */
+        readonly readyState: SocketReadyState;
+        /**
+         * The string representation of the remote IP address. For example,`'74.125.127.100'` or `'2001:4860:a005::68'`. Value may be `undefined` if
+         * the socket is destroyed (for example, if the client disconnected).
+         * @since v0.5.10
+         */
+        readonly remoteAddress?: string | undefined;
+        /**
+         * The string representation of the remote IP family. `'IPv4'` or `'IPv6'`.
+         * @since v0.11.14
+         */
+        readonly remoteFamily?: string | undefined;
+        /**
+         * The numeric representation of the remote port. For example, `80` or `21`.
+         * @since v0.5.10
+         */
+        readonly remotePort?: number | undefined;
+        /**
+         * The socket timeout in milliseconds as set by socket.setTimeout(). It is undefined if a timeout has not been set.
+         * @since v10.7.0
+         */
+        readonly timeout?: number | undefined;
+        /**
+         * Half-closes the socket. i.e., it sends a FIN packet. It is possible the
+         * server will still send some data.
+         *
+         * See `writable.end()` for further details.
+         * @since v0.1.90
+         * @param [encoding='utf8'] Only used when data is `string`.
+         * @param callback Optional callback for when the socket is finished.
+         * @return The socket itself.
+         */
+        end(callback?: () => void): this;
+        end(buffer: Uint8Array | string, callback?: () => void): this;
+        end(str: Uint8Array | string, encoding?: BufferEncoding, callback?: () => void): this;
+        /**
+         * events.EventEmitter
+         *   1. close
+         *   2. connect
+         *   3. data
+         *   4. drain
+         *   5. end
+         *   6. error
+         *   7. lookup
+         *   8. timeout
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: (hadError: boolean) => void): this;
+        addListener(event: 'connect', listener: () => void): this;
+        addListener(event: 'data', listener: (data: Buffer) => void): this;
+        addListener(event: 'drain', listener: () => void): this;
+        addListener(event: 'end', listener: () => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'lookup', listener: (err: Error, address: string, family: string | number, host: string) => void): this;
+        addListener(event: 'ready', listener: () => void): this;
+        addListener(event: 'timeout', listener: () => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'close', hadError: boolean): boolean;
+        emit(event: 'connect'): boolean;
+        emit(event: 'data', data: Buffer): boolean;
+        emit(event: 'drain'): boolean;
+        emit(event: 'end'): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'lookup', err: Error, address: string, family: string | number, host: string): boolean;
+        emit(event: 'ready'): boolean;
+        emit(event: 'timeout'): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: (hadError: boolean) => void): this;
+        on(event: 'connect', listener: () => void): this;
+        on(event: 'data', listener: (data: Buffer) => void): this;
+        on(event: 'drain', listener: () => void): this;
+        on(event: 'end', listener: () => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'lookup', listener: (err: Error, address: string, family: string | number, host: string) => void): this;
+        on(event: 'ready', listener: () => void): this;
+        on(event: 'timeout', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: (hadError: boolean) => void): this;
+        once(event: 'connect', listener: () => void): this;
+        once(event: 'data', listener: (data: Buffer) => void): this;
+        once(event: 'drain', listener: () => void): this;
+        once(event: 'end', listener: () => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'lookup', listener: (err: Error, address: string, family: string | number, host: string) => void): this;
+        once(event: 'ready', listener: () => void): this;
+        once(event: 'timeout', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: (hadError: boolean) => void): this;
+        prependListener(event: 'connect', listener: () => void): this;
+        prependListener(event: 'data', listener: (data: Buffer) => void): this;
+        prependListener(event: 'drain', listener: () => void): this;
+        prependListener(event: 'end', listener: () => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'lookup', listener: (err: Error, address: string, family: string | number, host: string) => void): this;
+        prependListener(event: 'ready', listener: () => void): this;
+        prependListener(event: 'timeout', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: (hadError: boolean) => void): this;
+        prependOnceListener(event: 'connect', listener: () => void): this;
+        prependOnceListener(event: 'data', listener: (data: Buffer) => void): this;
+        prependOnceListener(event: 'drain', listener: () => void): this;
+        prependOnceListener(event: 'end', listener: () => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'lookup', listener: (err: Error, address: string, family: string | number, host: string) => void): this;
+        prependOnceListener(event: 'ready', listener: () => void): this;
+        prependOnceListener(event: 'timeout', listener: () => void): this;
+    }
+    interface ListenOptions extends Abortable {
+        port?: number | undefined;
+        host?: string | undefined;
+        backlog?: number | undefined;
+        path?: string | undefined;
+        exclusive?: boolean | undefined;
+        readableAll?: boolean | undefined;
+        writableAll?: boolean | undefined;
+        /**
+         * @default false
+         */
+        ipv6Only?: boolean | undefined;
+    }
+    interface ServerOpts {
+        /**
+         * Indicates whether half-opened TCP connections are allowed.
+         * @default false
+         */
+        allowHalfOpen?: boolean | undefined;
+        /**
+         * Indicates whether the socket should be paused on incoming connections.
+         * @default false
+         */
+        pauseOnConnect?: boolean | undefined;
+        /**
+         * If set to `true`, it disables the use of Nagle's algorithm immediately after a new incoming connection is received.
+         * @default false
+         * @since v16.5.0
+         */
+        noDelay?: boolean | undefined;
+        /**
+         * If set to `true`, it enables keep-alive functionality on the socket immediately after a new incoming connection is received,
+         * similarly on what is done in `socket.setKeepAlive([enable][, initialDelay])`.
+         * @default false
+         * @since v16.5.0
+         */
+        keepAlive?: boolean | undefined;
+        /**
+         * If set to a positive number, it sets the initial delay before the first keepalive probe is sent on an idle socket.
+         * @default 0
+         * @since v16.5.0
+         */
+        keepAliveInitialDelay?: number | undefined;
+    }
+    /**
+     * This class is used to create a TCP or `IPC` server.
+     * @since v0.1.90
+     */
+    class Server extends EventEmitter {
+        constructor(connectionListener?: (socket: Socket) => void);
+        constructor(options?: ServerOpts, connectionListener?: (socket: Socket) => void);
+        /**
+         * Start a server listening for connections. A `net.Server` can be a TCP or
+         * an `IPC` server depending on what it listens to.
+         *
+         * Possible signatures:
+         *
+         * * `server.listen(handle[, backlog][, callback])`
+         * * `server.listen(options[, callback])`
+         * * `server.listen(path[, backlog][, callback])` for `IPC` servers
+         * * `server.listen([port[, host[, backlog]]][, callback])` for TCP servers
+         *
+         * This function is asynchronous. When the server starts listening, the `'listening'` event will be emitted. The last parameter `callback`will be added as a listener for the `'listening'`
+         * event.
+         *
+         * All `listen()` methods can take a `backlog` parameter to specify the maximum
+         * length of the queue of pending connections. The actual length will be determined
+         * by the OS through sysctl settings such as `tcp_max_syn_backlog` and `somaxconn`on Linux. The default value of this parameter is 511 (not 512).
+         *
+         * All {@link Socket} are set to `SO_REUSEADDR` (see [`socket(7)`](https://man7.org/linux/man-pages/man7/socket.7.html) for
+         * details).
+         *
+         * The `server.listen()` method can be called again if and only if there was an
+         * error during the first `server.listen()` call or `server.close()` has been
+         * called. Otherwise, an `ERR_SERVER_ALREADY_LISTEN` error will be thrown.
+         *
+         * One of the most common errors raised when listening is `EADDRINUSE`.
+         * This happens when another server is already listening on the requested`port`/`path`/`handle`. One way to handle this would be to retry
+         * after a certain amount of time:
+         *
+         * ```js
+         * server.on('error', (e) => {
+         *   if (e.code === 'EADDRINUSE') {
+         *     console.log('Address in use, retrying...');
+         *     setTimeout(() => {
+         *       server.close();
+         *       server.listen(PORT, HOST);
+         *     }, 1000);
+         *   }
+         * });
+         * ```
+         */
+        listen(port?: number, hostname?: string, backlog?: number, listeningListener?: () => void): this;
+        listen(port?: number, hostname?: string, listeningListener?: () => void): this;
+        listen(port?: number, backlog?: number, listeningListener?: () => void): this;
+        listen(port?: number, listeningListener?: () => void): this;
+        listen(path: string, backlog?: number, listeningListener?: () => void): this;
+        listen(path: string, listeningListener?: () => void): this;
+        listen(options: ListenOptions, listeningListener?: () => void): this;
+        listen(handle: any, backlog?: number, listeningListener?: () => void): this;
+        listen(handle: any, listeningListener?: () => void): this;
+        /**
+         * Stops the server from accepting new connections and keeps existing
+         * connections. This function is asynchronous, the server is finally closed
+         * when all connections are ended and the server emits a `'close'` event.
+         * The optional `callback` will be called once the `'close'` event occurs. Unlike
+         * that event, it will be called with an `Error` as its only argument if the server
+         * was not open when it was closed.
+         * @since v0.1.90
+         * @param callback Called when the server is closed.
+         */
+        close(callback?: (err?: Error) => void): this;
+        /**
+         * Returns the bound `address`, the address `family` name, and `port` of the server
+         * as reported by the operating system if listening on an IP socket
+         * (useful to find which port was assigned when getting an OS-assigned address):`{ port: 12346, family: 'IPv4', address: '127.0.0.1' }`.
+         *
+         * For a server listening on a pipe or Unix domain socket, the name is returned
+         * as a string.
+         *
+         * ```js
+         * const server = net.createServer((socket) => {
+         *   socket.end('goodbye\n');
+         * }).on('error', (err) => {
+         *   // Handle errors here.
+         *   throw err;
+         * });
+         *
+         * // Grab an arbitrary unused port.
+         * server.listen(() => {
+         *   console.log('opened server on', server.address());
+         * });
+         * ```
+         *
+         * `server.address()` returns `null` before the `'listening'` event has been
+         * emitted or after calling `server.close()`.
+         * @since v0.1.90
+         */
+        address(): AddressInfo | string | null;
+        /**
+         * Asynchronously get the number of concurrent connections on the server. Works
+         * when sockets were sent to forks.
+         *
+         * Callback should take two arguments `err` and `count`.
+         * @since v0.9.7
+         */
+        getConnections(cb: (error: Error | null, count: number) => void): void;
+        /**
+         * Opposite of `unref()`, calling `ref()` on a previously `unref`ed server will _not_ let the program exit if it's the only server left (the default behavior).
+         * If the server is `ref`ed calling `ref()` again will have no effect.
+         * @since v0.9.1
+         */
+        ref(): this;
+        /**
+         * Calling `unref()` on a server will allow the program to exit if this is the only
+         * active server in the event system. If the server is already `unref`ed calling`unref()` again will have no effect.
+         * @since v0.9.1
+         */
+        unref(): this;
+        /**
+         * Set this property to reject connections when the server's connection count gets
+         * high.
+         *
+         * It is not recommended to use this option once a socket has been sent to a child
+         * with `child_process.fork()`.
+         * @since v0.2.0
+         */
+        maxConnections: number;
+        connections: number;
+        /**
+         * Indicates whether or not the server is listening for connections.
+         * @since v5.7.0
+         */
+        listening: boolean;
+        /**
+         * events.EventEmitter
+         *   1. close
+         *   2. connection
+         *   3. error
+         *   4. listening
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'connection', listener: (socket: Socket) => void): this;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'listening', listener: () => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'connection', socket: Socket): boolean;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'listening'): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'connection', listener: (socket: Socket) => void): this;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'listening', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'connection', listener: (socket: Socket) => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'listening', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'connection', listener: (socket: Socket) => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'listening', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'connection', listener: (socket: Socket) => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'listening', listener: () => void): this;
+    }
+    type IPVersion = 'ipv4' | 'ipv6';
+    /**
+     * The `BlockList` object can be used with some network APIs to specify rules for
+     * disabling inbound or outbound access to specific IP addresses, IP ranges, or
+     * IP subnets.
+     * @since v15.0.0, v14.18.0
+     */
+    class BlockList {
+        /**
+         * Adds a rule to block the given IP address.
+         * @since v15.0.0, v14.18.0
+         * @param address An IPv4 or IPv6 address.
+         * @param [type='ipv4'] Either `'ipv4'` or `'ipv6'`.
+         */
+        addAddress(address: string, type?: IPVersion): void;
+        addAddress(address: SocketAddress): void;
+        /**
+         * Adds a rule to block a range of IP addresses from `start` (inclusive) to`end` (inclusive).
+         * @since v15.0.0, v14.18.0
+         * @param start The starting IPv4 or IPv6 address in the range.
+         * @param end The ending IPv4 or IPv6 address in the range.
+         * @param [type='ipv4'] Either `'ipv4'` or `'ipv6'`.
+         */
+        addRange(start: string, end: string, type?: IPVersion): void;
+        addRange(start: SocketAddress, end: SocketAddress): void;
+        /**
+         * Adds a rule to block a range of IP addresses specified as a subnet mask.
+         * @since v15.0.0, v14.18.0
+         * @param net The network IPv4 or IPv6 address.
+         * @param prefix The number of CIDR prefix bits. For IPv4, this must be a value between `0` and `32`. For IPv6, this must be between `0` and `128`.
+         * @param [type='ipv4'] Either `'ipv4'` or `'ipv6'`.
+         */
+        addSubnet(net: SocketAddress, prefix: number): void;
+        addSubnet(net: string, prefix: number, type?: IPVersion): void;
+        /**
+         * Returns `true` if the given IP address matches any of the rules added to the`BlockList`.
+         *
+         * ```js
+         * const blockList = new net.BlockList();
+         * blockList.addAddress('123.123.123.123');
+         * blockList.addRange('10.0.0.1', '10.0.0.10');
+         * blockList.addSubnet('8592:757c:efae:4e45::', 64, 'ipv6');
+         *
+         * console.log(blockList.check('123.123.123.123'));  // Prints: true
+         * console.log(blockList.check('10.0.0.3'));  // Prints: true
+         * console.log(blockList.check('222.111.111.222'));  // Prints: false
+         *
+         * // IPv6 notation for IPv4 addresses works:
+         * console.log(blockList.check('::ffff:7b7b:7b7b', 'ipv6')); // Prints: true
+         * console.log(blockList.check('::ffff:123.123.123.123', 'ipv6')); // Prints: true
+         * ```
+         * @since v15.0.0, v14.18.0
+         * @param address The IP address to check
+         * @param [type='ipv4'] Either `'ipv4'` or `'ipv6'`.
+         */
+        check(address: SocketAddress): boolean;
+        check(address: string, type?: IPVersion): boolean;
+    }
+    interface TcpNetConnectOpts extends TcpSocketConnectOpts, SocketConstructorOpts {
+        timeout?: number | undefined;
+    }
+    interface IpcNetConnectOpts extends IpcSocketConnectOpts, SocketConstructorOpts {
+        timeout?: number | undefined;
+    }
+    type NetConnectOpts = TcpNetConnectOpts | IpcNetConnectOpts;
+    /**
+     * Creates a new TCP or `IPC` server.
+     *
+     * If `allowHalfOpen` is set to `true`, when the other end of the socket
+     * signals the end of transmission, the server will only send back the end of
+     * transmission when `socket.end()` is explicitly called. For example, in the
+     * context of TCP, when a FIN packed is received, a FIN packed is sent
+     * back only when `socket.end()` is explicitly called. Until then the
+     * connection is half-closed (non-readable but still writable). See `'end'` event and [RFC 1122](https://tools.ietf.org/html/rfc1122) (section 4.2.2.13) for more information.
+     *
+     * If `pauseOnConnect` is set to `true`, then the socket associated with each
+     * incoming connection will be paused, and no data will be read from its handle.
+     * This allows connections to be passed between processes without any data being
+     * read by the original process. To begin reading data from a paused socket, call `socket.resume()`.
+     *
+     * The server can be a TCP server or an `IPC` server, depending on what it `listen()` to.
+     *
+     * Here is an example of a TCP echo server which listens for connections
+     * on port 8124:
+     *
+     * ```js
+     * const net = require('net');
+     * const server = net.createServer((c) => {
+     *   // 'connection' listener.
+     *   console.log('client connected');
+     *   c.on('end', () => {
+     *     console.log('client disconnected');
+     *   });
+     *   c.write('hello\r\n');
+     *   c.pipe(c);
+     * });
+     * server.on('error', (err) => {
+     *   throw err;
+     * });
+     * server.listen(8124, () => {
+     *   console.log('server bound');
+     * });
+     * ```
+     *
+     * Test this by using `telnet`:
+     *
+     * ```console
+     * $ telnet localhost 8124
+     * ```
+     *
+     * To listen on the socket `/tmp/echo.sock`:
+     *
+     * ```js
+     * server.listen('/tmp/echo.sock', () => {
+     *   console.log('server bound');
+     * });
+     * ```
+     *
+     * Use `nc` to connect to a Unix domain socket server:
+     *
+     * ```console
+     * $ nc -U /tmp/echo.sock
+     * ```
+     * @since v0.5.0
+     * @param connectionListener Automatically set as a listener for the {@link 'connection'} event.
+     */
+    function createServer(connectionListener?: (socket: Socket) => void): Server;
+    function createServer(options?: ServerOpts, connectionListener?: (socket: Socket) => void): Server;
+    /**
+     * Aliases to {@link createConnection}.
+     *
+     * Possible signatures:
+     *
+     * * {@link connect}
+     * * {@link connect} for `IPC` connections.
+     * * {@link connect} for TCP connections.
+     */
+    function connect(options: NetConnectOpts, connectionListener?: () => void): Socket;
+    function connect(port: number, host?: string, connectionListener?: () => void): Socket;
+    function connect(path: string, connectionListener?: () => void): Socket;
+    /**
+     * A factory function, which creates a new {@link Socket},
+     * immediately initiates connection with `socket.connect()`,
+     * then returns the `net.Socket` that starts the connection.
+     *
+     * When the connection is established, a `'connect'` event will be emitted
+     * on the returned socket. The last parameter `connectListener`, if supplied,
+     * will be added as a listener for the `'connect'` event **once**.
+     *
+     * Possible signatures:
+     *
+     * * {@link createConnection}
+     * * {@link createConnection} for `IPC` connections.
+     * * {@link createConnection} for TCP connections.
+     *
+     * The {@link connect} function is an alias to this function.
+     */
+    function createConnection(options: NetConnectOpts, connectionListener?: () => void): Socket;
+    function createConnection(port: number, host?: string, connectionListener?: () => void): Socket;
+    function createConnection(path: string, connectionListener?: () => void): Socket;
+    /**
+     * Returns `6` if `input` is an IPv6 address. Returns `4` if `input` is an IPv4
+     * address in [dot-decimal notation](https://en.wikipedia.org/wiki/Dot-decimal_notation) with no leading zeroes. Otherwise, returns`0`.
+     *
+     * ```js
+     * net.isIP('::1'); // returns 6
+     * net.isIP('127.0.0.1'); // returns 4
+     * net.isIP('127.000.000.001'); // returns 0
+     * net.isIP('127.0.0.1/24'); // returns 0
+     * net.isIP('fhqwhgads'); // returns 0
+     * ```
+     * @since v0.3.0
+     */
+    function isIP(input: string): number;
+    /**
+     * Returns `true` if `input` is an IPv4 address in [dot-decimal notation](https://en.wikipedia.org/wiki/Dot-decimal_notation) with no
+     * leading zeroes. Otherwise, returns `false`.
+     *
+     * ```js
+     * net.isIPv4('127.0.0.1'); // returns true
+     * net.isIPv4('127.000.000.001'); // returns false
+     * net.isIPv4('127.0.0.1/24'); // returns false
+     * net.isIPv4('fhqwhgads'); // returns false
+     * ```
+     * @since v0.3.0
+     */
+    function isIPv4(input: string): boolean;
+    /**
+     * Returns `true` if `input` is an IPv6 address. Otherwise, returns `false`.
+     *
+     * ```js
+     * net.isIPv6('::1'); // returns true
+     * net.isIPv6('fhqwhgads'); // returns false
+     * ```
+     * @since v0.3.0
+     */
+    function isIPv6(input: string): boolean;
+    interface SocketAddressInitOptions {
+        /**
+         * The network address as either an IPv4 or IPv6 string.
+         * @default 127.0.0.1
+         */
+        address?: string | undefined;
+        /**
+         * @default `'ipv4'`
+         */
+        family?: IPVersion | undefined;
+        /**
+         * An IPv6 flow-label used only if `family` is `'ipv6'`.
+         * @default 0
+         */
+        flowlabel?: number | undefined;
+        /**
+         * An IP port.
+         * @default 0
+         */
+        port?: number | undefined;
+    }
+    /**
+     * @since v15.14.0, v14.18.0
+     */
+    class SocketAddress {
+        constructor(options: SocketAddressInitOptions);
+        /**
+         * Either \`'ipv4'\` or \`'ipv6'\`.
+         * @since v15.14.0, v14.18.0
+         */
+        readonly address: string;
+        /**
+         * Either \`'ipv4'\` or \`'ipv6'\`.
+         * @since v15.14.0, v14.18.0
+         */
+        readonly family: IPVersion;
+        /**
+         * @since v15.14.0, v14.18.0
+         */
+        readonly port: number;
+        /**
+         * @since v15.14.0, v14.18.0
+         */
+        readonly flowlabel: number;
+    }
+}
+declare module 'node:net' {
+    export * from 'net';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/os.d.ts b/igv_component/node_modules/@types/node/ts4.8/os.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..3c555992ddf058543bbe88d95362dca13b08ad48
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/os.d.ts
@@ -0,0 +1,466 @@
+/**
+ * The `os` module provides operating system-related utility methods and
+ * properties. It can be accessed using:
+ *
+ * ```js
+ * const os = require('os');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/os.js)
+ */
+declare module 'os' {
+    interface CpuInfo {
+        model: string;
+        speed: number;
+        times: {
+            user: number;
+            nice: number;
+            sys: number;
+            idle: number;
+            irq: number;
+        };
+    }
+    interface NetworkInterfaceBase {
+        address: string;
+        netmask: string;
+        mac: string;
+        internal: boolean;
+        cidr: string | null;
+    }
+    interface NetworkInterfaceInfoIPv4 extends NetworkInterfaceBase {
+        family: 'IPv4';
+        scopeid?: undefined;
+    }
+    interface NetworkInterfaceInfoIPv6 extends NetworkInterfaceBase {
+        family: 'IPv6';
+        scopeid: number;
+    }
+    interface UserInfo<T> {
+        username: T;
+        uid: number;
+        gid: number;
+        shell: T;
+        homedir: T;
+    }
+    type NetworkInterfaceInfo = NetworkInterfaceInfoIPv4 | NetworkInterfaceInfoIPv6;
+    /**
+     * Returns the host name of the operating system as a string.
+     * @since v0.3.3
+     */
+    function hostname(): string;
+    /**
+     * Returns an array containing the 1, 5, and 15 minute load averages.
+     *
+     * The load average is a measure of system activity calculated by the operating
+     * system and expressed as a fractional number.
+     *
+     * The load average is a Unix-specific concept. On Windows, the return value is
+     * always `[0, 0, 0]`.
+     * @since v0.3.3
+     */
+    function loadavg(): number[];
+    /**
+     * Returns the system uptime in number of seconds.
+     * @since v0.3.3
+     */
+    function uptime(): number;
+    /**
+     * Returns the amount of free system memory in bytes as an integer.
+     * @since v0.3.3
+     */
+    function freemem(): number;
+    /**
+     * Returns the total amount of system memory in bytes as an integer.
+     * @since v0.3.3
+     */
+    function totalmem(): number;
+    /**
+     * Returns an array of objects containing information about each logical CPU core.
+     *
+     * The properties included on each object include:
+     *
+     * ```js
+     * [
+     *   {
+     *     model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
+     *     speed: 2926,
+     *     times: {
+     *       user: 252020,
+     *       nice: 0,
+     *       sys: 30340,
+     *       idle: 1070356870,
+     *       irq: 0
+     *     }
+     *   },
+     *   {
+     *     model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
+     *     speed: 2926,
+     *     times: {
+     *       user: 306960,
+     *       nice: 0,
+     *       sys: 26980,
+     *       idle: 1071569080,
+     *       irq: 0
+     *     }
+     *   },
+     *   {
+     *     model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
+     *     speed: 2926,
+     *     times: {
+     *       user: 248450,
+     *       nice: 0,
+     *       sys: 21750,
+     *       idle: 1070919370,
+     *       irq: 0
+     *     }
+     *   },
+     *   {
+     *     model: 'Intel(R) Core(TM) i7 CPU         860  @ 2.80GHz',
+     *     speed: 2926,
+     *     times: {
+     *       user: 256880,
+     *       nice: 0,
+     *       sys: 19430,
+     *       idle: 1070905480,
+     *       irq: 20
+     *     }
+     *   },
+     * ]
+     * ```
+     *
+     * `nice` values are POSIX-only. On Windows, the `nice` values of all processors
+     * are always 0.
+     * @since v0.3.3
+     */
+    function cpus(): CpuInfo[];
+    /**
+     * Returns the operating system name as returned by [`uname(3)`](https://linux.die.net/man/3/uname). For example, it
+     * returns `'Linux'` on Linux, `'Darwin'` on macOS, and `'Windows_NT'` on Windows.
+     *
+     * See [https://en.wikipedia.org/wiki/Uname#Examples](https://en.wikipedia.org/wiki/Uname#Examples) for additional information
+     * about the output of running [`uname(3)`](https://linux.die.net/man/3/uname) on various operating systems.
+     * @since v0.3.3
+     */
+    function type(): string;
+    /**
+     * Returns the operating system as a string.
+     *
+     * On POSIX systems, the operating system release is determined by calling [`uname(3)`](https://linux.die.net/man/3/uname). On Windows, `GetVersionExW()` is used. See
+     * [https://en.wikipedia.org/wiki/Uname#Examples](https://en.wikipedia.org/wiki/Uname#Examples) for more information.
+     * @since v0.3.3
+     */
+    function release(): string;
+    /**
+     * Returns an object containing network interfaces that have been assigned a
+     * network address.
+     *
+     * Each key on the returned object identifies a network interface. The associated
+     * value is an array of objects that each describe an assigned network address.
+     *
+     * The properties available on the assigned network address object include:
+     *
+     * ```js
+     * {
+     *   lo: [
+     *     {
+     *       address: '127.0.0.1',
+     *       netmask: '255.0.0.0',
+     *       family: 'IPv4',
+     *       mac: '00:00:00:00:00:00',
+     *       internal: true,
+     *       cidr: '127.0.0.1/8'
+     *     },
+     *     {
+     *       address: '::1',
+     *       netmask: 'ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff',
+     *       family: 'IPv6',
+     *       mac: '00:00:00:00:00:00',
+     *       scopeid: 0,
+     *       internal: true,
+     *       cidr: '::1/128'
+     *     }
+     *   ],
+     *   eth0: [
+     *     {
+     *       address: '192.168.1.108',
+     *       netmask: '255.255.255.0',
+     *       family: 'IPv4',
+     *       mac: '01:02:03:0a:0b:0c',
+     *       internal: false,
+     *       cidr: '192.168.1.108/24'
+     *     },
+     *     {
+     *       address: 'fe80::a00:27ff:fe4e:66a1',
+     *       netmask: 'ffff:ffff:ffff:ffff::',
+     *       family: 'IPv6',
+     *       mac: '01:02:03:0a:0b:0c',
+     *       scopeid: 1,
+     *       internal: false,
+     *       cidr: 'fe80::a00:27ff:fe4e:66a1/64'
+     *     }
+     *   ]
+     * }
+     * ```
+     * @since v0.6.0
+     */
+    function networkInterfaces(): NodeJS.Dict<NetworkInterfaceInfo[]>;
+    /**
+     * Returns the string path of the current user's home directory.
+     *
+     * On POSIX, it uses the `$HOME` environment variable if defined. Otherwise it
+     * uses the [effective UID](https://en.wikipedia.org/wiki/User_identifier#Effective_user_ID) to look up the user's home directory.
+     *
+     * On Windows, it uses the `USERPROFILE` environment variable if defined.
+     * Otherwise it uses the path to the profile directory of the current user.
+     * @since v2.3.0
+     */
+    function homedir(): string;
+    /**
+     * Returns information about the currently effective user. On POSIX platforms,
+     * this is typically a subset of the password file. The returned object includes
+     * the `username`, `uid`, `gid`, `shell`, and `homedir`. On Windows, the `uid` and`gid` fields are `-1`, and `shell` is `null`.
+     *
+     * The value of `homedir` returned by `os.userInfo()` is provided by the operating
+     * system. This differs from the result of `os.homedir()`, which queries
+     * environment variables for the home directory before falling back to the
+     * operating system response.
+     *
+     * Throws a `SystemError` if a user has no `username` or `homedir`.
+     * @since v6.0.0
+     */
+    function userInfo(options: { encoding: 'buffer' }): UserInfo<Buffer>;
+    function userInfo(options?: { encoding: BufferEncoding }): UserInfo<string>;
+    type SignalConstants = {
+        [key in NodeJS.Signals]: number;
+    };
+    namespace constants {
+        const UV_UDP_REUSEADDR: number;
+        namespace signals {}
+        const signals: SignalConstants;
+        namespace errno {
+            const E2BIG: number;
+            const EACCES: number;
+            const EADDRINUSE: number;
+            const EADDRNOTAVAIL: number;
+            const EAFNOSUPPORT: number;
+            const EAGAIN: number;
+            const EALREADY: number;
+            const EBADF: number;
+            const EBADMSG: number;
+            const EBUSY: number;
+            const ECANCELED: number;
+            const ECHILD: number;
+            const ECONNABORTED: number;
+            const ECONNREFUSED: number;
+            const ECONNRESET: number;
+            const EDEADLK: number;
+            const EDESTADDRREQ: number;
+            const EDOM: number;
+            const EDQUOT: number;
+            const EEXIST: number;
+            const EFAULT: number;
+            const EFBIG: number;
+            const EHOSTUNREACH: number;
+            const EIDRM: number;
+            const EILSEQ: number;
+            const EINPROGRESS: number;
+            const EINTR: number;
+            const EINVAL: number;
+            const EIO: number;
+            const EISCONN: number;
+            const EISDIR: number;
+            const ELOOP: number;
+            const EMFILE: number;
+            const EMLINK: number;
+            const EMSGSIZE: number;
+            const EMULTIHOP: number;
+            const ENAMETOOLONG: number;
+            const ENETDOWN: number;
+            const ENETRESET: number;
+            const ENETUNREACH: number;
+            const ENFILE: number;
+            const ENOBUFS: number;
+            const ENODATA: number;
+            const ENODEV: number;
+            const ENOENT: number;
+            const ENOEXEC: number;
+            const ENOLCK: number;
+            const ENOLINK: number;
+            const ENOMEM: number;
+            const ENOMSG: number;
+            const ENOPROTOOPT: number;
+            const ENOSPC: number;
+            const ENOSR: number;
+            const ENOSTR: number;
+            const ENOSYS: number;
+            const ENOTCONN: number;
+            const ENOTDIR: number;
+            const ENOTEMPTY: number;
+            const ENOTSOCK: number;
+            const ENOTSUP: number;
+            const ENOTTY: number;
+            const ENXIO: number;
+            const EOPNOTSUPP: number;
+            const EOVERFLOW: number;
+            const EPERM: number;
+            const EPIPE: number;
+            const EPROTO: number;
+            const EPROTONOSUPPORT: number;
+            const EPROTOTYPE: number;
+            const ERANGE: number;
+            const EROFS: number;
+            const ESPIPE: number;
+            const ESRCH: number;
+            const ESTALE: number;
+            const ETIME: number;
+            const ETIMEDOUT: number;
+            const ETXTBSY: number;
+            const EWOULDBLOCK: number;
+            const EXDEV: number;
+            const WSAEINTR: number;
+            const WSAEBADF: number;
+            const WSAEACCES: number;
+            const WSAEFAULT: number;
+            const WSAEINVAL: number;
+            const WSAEMFILE: number;
+            const WSAEWOULDBLOCK: number;
+            const WSAEINPROGRESS: number;
+            const WSAEALREADY: number;
+            const WSAENOTSOCK: number;
+            const WSAEDESTADDRREQ: number;
+            const WSAEMSGSIZE: number;
+            const WSAEPROTOTYPE: number;
+            const WSAENOPROTOOPT: number;
+            const WSAEPROTONOSUPPORT: number;
+            const WSAESOCKTNOSUPPORT: number;
+            const WSAEOPNOTSUPP: number;
+            const WSAEPFNOSUPPORT: number;
+            const WSAEAFNOSUPPORT: number;
+            const WSAEADDRINUSE: number;
+            const WSAEADDRNOTAVAIL: number;
+            const WSAENETDOWN: number;
+            const WSAENETUNREACH: number;
+            const WSAENETRESET: number;
+            const WSAECONNABORTED: number;
+            const WSAECONNRESET: number;
+            const WSAENOBUFS: number;
+            const WSAEISCONN: number;
+            const WSAENOTCONN: number;
+            const WSAESHUTDOWN: number;
+            const WSAETOOMANYREFS: number;
+            const WSAETIMEDOUT: number;
+            const WSAECONNREFUSED: number;
+            const WSAELOOP: number;
+            const WSAENAMETOOLONG: number;
+            const WSAEHOSTDOWN: number;
+            const WSAEHOSTUNREACH: number;
+            const WSAENOTEMPTY: number;
+            const WSAEPROCLIM: number;
+            const WSAEUSERS: number;
+            const WSAEDQUOT: number;
+            const WSAESTALE: number;
+            const WSAEREMOTE: number;
+            const WSASYSNOTREADY: number;
+            const WSAVERNOTSUPPORTED: number;
+            const WSANOTINITIALISED: number;
+            const WSAEDISCON: number;
+            const WSAENOMORE: number;
+            const WSAECANCELLED: number;
+            const WSAEINVALIDPROCTABLE: number;
+            const WSAEINVALIDPROVIDER: number;
+            const WSAEPROVIDERFAILEDINIT: number;
+            const WSASYSCALLFAILURE: number;
+            const WSASERVICE_NOT_FOUND: number;
+            const WSATYPE_NOT_FOUND: number;
+            const WSA_E_NO_MORE: number;
+            const WSA_E_CANCELLED: number;
+            const WSAEREFUSED: number;
+        }
+        namespace priority {
+            const PRIORITY_LOW: number;
+            const PRIORITY_BELOW_NORMAL: number;
+            const PRIORITY_NORMAL: number;
+            const PRIORITY_ABOVE_NORMAL: number;
+            const PRIORITY_HIGH: number;
+            const PRIORITY_HIGHEST: number;
+        }
+    }
+    const devNull: string;
+    const EOL: string;
+    /**
+     * Returns the operating system CPU architecture for which the Node.js binary was
+     * compiled. Possible values are `'arm'`, `'arm64'`, `'ia32'`, `'mips'`,`'mipsel'`, `'ppc'`, `'ppc64'`, `'s390'`, `'s390x'`, and `'x64'`.
+     *
+     * The return value is equivalent to `process.arch`.
+     * @since v0.5.0
+     */
+    function arch(): string;
+    /**
+     * Returns a string identifying the kernel version.
+     *
+     * On POSIX systems, the operating system release is determined by calling [`uname(3)`](https://linux.die.net/man/3/uname). On Windows, `RtlGetVersion()` is used, and if it is not
+     * available, `GetVersionExW()` will be used. See [https://en.wikipedia.org/wiki/Uname#Examples](https://en.wikipedia.org/wiki/Uname#Examples) for more information.
+     * @since v13.11.0, v12.17.0
+     */
+    function version(): string;
+    /**
+     * Returns a string identifying the operating system platform for which
+     * the Node.js binary was compiled. The value is set at compile time.
+     * Possible values are `'aix'`, `'darwin'`, `'freebsd'`,`'linux'`,`'openbsd'`, `'sunos'`, and `'win32'`.
+     *
+     * The return value is equivalent to `process.platform`.
+     *
+     * The value `'android'` may also be returned if Node.js is built on the Android
+     * operating system. [Android support is experimental](https://github.com/nodejs/node/blob/HEAD/BUILDING.md#androidandroid-based-devices-eg-firefox-os).
+     * @since v0.5.0
+     */
+    function platform(): NodeJS.Platform;
+    /**
+     * Returns the machine type as a string, such as arm, aarch64, mips, mips64, ppc64, ppc64le, s390, s390x, i386, i686, x86_64.
+     *
+     * On POSIX systems, the machine type is determined by calling [`uname(3)`](https://linux.die.net/man/3/uname).
+     * On Windows, `RtlGetVersion()` is used, and if it is not available, `GetVersionExW()` will be used.
+     * See [https://en.wikipedia.org/wiki/Uname#Examples](https://en.wikipedia.org/wiki/Uname#Examples) for more information.
+     * @since v18.9.0
+     */
+    function machine(): string;
+    /**
+     * Returns the operating system's default directory for temporary files as a
+     * string.
+     * @since v0.9.9
+     */
+    function tmpdir(): string;
+    /**
+     * Returns a string identifying the endianness of the CPU for which the Node.js
+     * binary was compiled.
+     *
+     * Possible values are `'BE'` for big endian and `'LE'` for little endian.
+     * @since v0.9.4
+     */
+    function endianness(): 'BE' | 'LE';
+    /**
+     * Returns the scheduling priority for the process specified by `pid`. If `pid` is
+     * not provided or is `0`, the priority of the current process is returned.
+     * @since v10.10.0
+     * @param [pid=0] The process ID to retrieve scheduling priority for.
+     */
+    function getPriority(pid?: number): number;
+    /**
+     * Attempts to set the scheduling priority for the process specified by `pid`. If`pid` is not provided or is `0`, the process ID of the current process is used.
+     *
+     * The `priority` input must be an integer between `-20` (high priority) and `19`(low priority). Due to differences between Unix priority levels and Windows
+     * priority classes, `priority` is mapped to one of six priority constants in`os.constants.priority`. When retrieving a process priority level, this range
+     * mapping may cause the return value to be slightly different on Windows. To avoid
+     * confusion, set `priority` to one of the priority constants.
+     *
+     * On Windows, setting priority to `PRIORITY_HIGHEST` requires elevated user
+     * privileges. Otherwise the set priority will be silently reduced to`PRIORITY_HIGH`.
+     * @since v10.10.0
+     * @param [pid=0] The process ID to set scheduling priority for.
+     * @param priority The scheduling priority to assign to the process.
+     */
+    function setPriority(priority: number): void;
+    function setPriority(pid: number, priority: number): void;
+}
+declare module 'node:os' {
+    export * from 'os';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/path.d.ts b/igv_component/node_modules/@types/node/ts4.8/path.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2d643b29be92c29f87c46ce6b0558ec431456b9e
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/path.d.ts
@@ -0,0 +1,191 @@
+declare module 'path/posix' {
+    import path = require('path');
+    export = path;
+}
+declare module 'path/win32' {
+    import path = require('path');
+    export = path;
+}
+/**
+ * The `path` module provides utilities for working with file and directory paths.
+ * It can be accessed using:
+ *
+ * ```js
+ * const path = require('path');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/path.js)
+ */
+declare module 'path' {
+    namespace path {
+        /**
+         * A parsed path object generated by path.parse() or consumed by path.format().
+         */
+        interface ParsedPath {
+            /**
+             * The root of the path such as '/' or 'c:\'
+             */
+            root: string;
+            /**
+             * The full directory path such as '/home/user/dir' or 'c:\path\dir'
+             */
+            dir: string;
+            /**
+             * The file name including extension (if any) such as 'index.html'
+             */
+            base: string;
+            /**
+             * The file extension (if any) such as '.html'
+             */
+            ext: string;
+            /**
+             * The file name without extension (if any) such as 'index'
+             */
+            name: string;
+        }
+        interface FormatInputPathObject {
+            /**
+             * The root of the path such as '/' or 'c:\'
+             */
+            root?: string | undefined;
+            /**
+             * The full directory path such as '/home/user/dir' or 'c:\path\dir'
+             */
+            dir?: string | undefined;
+            /**
+             * The file name including extension (if any) such as 'index.html'
+             */
+            base?: string | undefined;
+            /**
+             * The file extension (if any) such as '.html'
+             */
+            ext?: string | undefined;
+            /**
+             * The file name without extension (if any) such as 'index'
+             */
+            name?: string | undefined;
+        }
+        interface PlatformPath {
+            /**
+             * Normalize a string path, reducing '..' and '.' parts.
+             * When multiple slashes are found, they're replaced by a single one; when the path contains a trailing slash, it is preserved. On Windows backslashes are used.
+             *
+             * @param path string path to normalize.
+             * @throws {TypeError} if `path` is not a string.
+             */
+            normalize(path: string): string;
+            /**
+             * Join all arguments together and normalize the resulting path.
+             *
+             * @param paths paths to join.
+             * @throws {TypeError} if any of the path segments is not a string.
+             */
+            join(...paths: string[]): string;
+            /**
+             * The right-most parameter is considered {to}. Other parameters are considered an array of {from}.
+             *
+             * Starting from leftmost {from} parameter, resolves {to} to an absolute path.
+             *
+             * If {to} isn't already absolute, {from} arguments are prepended in right to left order,
+             * until an absolute path is found. If after using all {from} paths still no absolute path is found,
+             * the current working directory is used as well. The resulting path is normalized,
+             * and trailing slashes are removed unless the path gets resolved to the root directory.
+             *
+             * @param paths A sequence of paths or path segments.
+             * @throws {TypeError} if any of the arguments is not a string.
+             */
+            resolve(...paths: string[]): string;
+            /**
+             * Determines whether {path} is an absolute path. An absolute path will always resolve to the same location, regardless of the working directory.
+             *
+             * If the given {path} is a zero-length string, `false` will be returned.
+             *
+             * @param path path to test.
+             * @throws {TypeError} if `path` is not a string.
+             */
+            isAbsolute(path: string): boolean;
+            /**
+             * Solve the relative path from {from} to {to} based on the current working directory.
+             * At times we have two absolute paths, and we need to derive the relative path from one to the other. This is actually the reverse transform of path.resolve.
+             *
+             * @throws {TypeError} if either `from` or `to` is not a string.
+             */
+            relative(from: string, to: string): string;
+            /**
+             * Return the directory name of a path. Similar to the Unix dirname command.
+             *
+             * @param path the path to evaluate.
+             * @throws {TypeError} if `path` is not a string.
+             */
+            dirname(path: string): string;
+            /**
+             * Return the last portion of a path. Similar to the Unix basename command.
+             * Often used to extract the file name from a fully qualified path.
+             *
+             * @param path the path to evaluate.
+             * @param ext optionally, an extension to remove from the result.
+             * @throws {TypeError} if `path` is not a string or if `ext` is given and is not a string.
+             */
+            basename(path: string, ext?: string): string;
+            /**
+             * Return the extension of the path, from the last '.' to end of string in the last portion of the path.
+             * If there is no '.' in the last portion of the path or the first character of it is '.', then it returns an empty string.
+             *
+             * @param path the path to evaluate.
+             * @throws {TypeError} if `path` is not a string.
+             */
+            extname(path: string): string;
+            /**
+             * The platform-specific file separator. '\\' or '/'.
+             */
+            readonly sep: '\\' | '/';
+            /**
+             * The platform-specific file delimiter. ';' or ':'.
+             */
+            readonly delimiter: ';' | ':';
+            /**
+             * Returns an object from a path string - the opposite of format().
+             *
+             * @param path path to evaluate.
+             * @throws {TypeError} if `path` is not a string.
+             */
+            parse(path: string): ParsedPath;
+            /**
+             * Returns a path string from an object - the opposite of parse().
+             *
+             * @param pathObject path to evaluate.
+             */
+            format(pathObject: FormatInputPathObject): string;
+            /**
+             * On Windows systems only, returns an equivalent namespace-prefixed path for the given path.
+             * If path is not a string, path will be returned without modifications.
+             * This method is meaningful only on Windows system.
+             * On POSIX systems, the method is non-operational and always returns path without modifications.
+             */
+            toNamespacedPath(path: string): string;
+            /**
+             * Posix specific pathing.
+             * Same as parent object on posix.
+             */
+            readonly posix: PlatformPath;
+            /**
+             * Windows specific pathing.
+             * Same as parent object on windows
+             */
+            readonly win32: PlatformPath;
+        }
+    }
+    const path: path.PlatformPath;
+    export = path;
+}
+declare module 'node:path' {
+    import path = require('path');
+    export = path;
+}
+declare module 'node:path/posix' {
+    import path = require('path/posix');
+    export = path;
+}
+declare module 'node:path/win32' {
+    import path = require('path/win32');
+    export = path;
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/perf_hooks.d.ts b/igv_component/node_modules/@types/node/ts4.8/perf_hooks.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..cf02a16e7107c94ccc7fb91c0add229ec5f83f8c
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/perf_hooks.d.ts
@@ -0,0 +1,610 @@
+/**
+ * This module provides an implementation of a subset of the W3C [Web Performance APIs](https://w3c.github.io/perf-timing-primer/) as well as additional APIs for
+ * Node.js-specific performance measurements.
+ *
+ * Node.js supports the following [Web Performance APIs](https://w3c.github.io/perf-timing-primer/):
+ *
+ * * [High Resolution Time](https://www.w3.org/TR/hr-time-2)
+ * * [Performance Timeline](https://w3c.github.io/performance-timeline/)
+ * * [User Timing](https://www.w3.org/TR/user-timing/)
+ *
+ * ```js
+ * const { PerformanceObserver, performance } = require('perf_hooks');
+ *
+ * const obs = new PerformanceObserver((items) => {
+ *   console.log(items.getEntries()[0].duration);
+ *   performance.clearMarks();
+ * });
+ * obs.observe({ type: 'measure' });
+ * performance.measure('Start to Now');
+ *
+ * performance.mark('A');
+ * doSomeLongRunningProcess(() => {
+ *   performance.measure('A to Now', 'A');
+ *
+ *   performance.mark('B');
+ *   performance.measure('A to B', 'A', 'B');
+ * });
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/perf_hooks.js)
+ */
+declare module 'perf_hooks' {
+    import { AsyncResource } from 'node:async_hooks';
+    type EntryType = 'node' | 'mark' | 'measure' | 'gc' | 'function' | 'http2' | 'http';
+    interface NodeGCPerformanceDetail {
+        /**
+         * When `performanceEntry.entryType` is equal to 'gc', `the performance.kind` property identifies
+         * the type of garbage collection operation that occurred.
+         * See perf_hooks.constants for valid values.
+         */
+        readonly kind?: number | undefined;
+        /**
+         * When `performanceEntry.entryType` is equal to 'gc', the `performance.flags`
+         * property contains additional information about garbage collection operation.
+         * See perf_hooks.constants for valid values.
+         */
+        readonly flags?: number | undefined;
+    }
+    /**
+     * @since v8.5.0
+     */
+    class PerformanceEntry {
+        protected constructor();
+        /**
+         * The total number of milliseconds elapsed for this entry. This value will not
+         * be meaningful for all Performance Entry types.
+         * @since v8.5.0
+         */
+        readonly duration: number;
+        /**
+         * The name of the performance entry.
+         * @since v8.5.0
+         */
+        readonly name: string;
+        /**
+         * The high resolution millisecond timestamp marking the starting time of the
+         * Performance Entry.
+         * @since v8.5.0
+         */
+        readonly startTime: number;
+        /**
+         * The type of the performance entry. It may be one of:
+         *
+         * * `'node'` (Node.js only)
+         * * `'mark'` (available on the Web)
+         * * `'measure'` (available on the Web)
+         * * `'gc'` (Node.js only)
+         * * `'function'` (Node.js only)
+         * * `'http2'` (Node.js only)
+         * * `'http'` (Node.js only)
+         * @since v8.5.0
+         */
+        readonly entryType: EntryType;
+        /**
+         * Additional detail specific to the `entryType`.
+         * @since v16.0.0
+         */
+        readonly detail?: NodeGCPerformanceDetail | unknown | undefined; // TODO: Narrow this based on entry type.
+        toJSON(): any;
+    }
+    class PerformanceMark extends PerformanceEntry {
+        readonly duration: 0;
+        readonly entryType: 'mark';
+    }
+    class PerformanceMeasure extends PerformanceEntry {
+        readonly entryType: 'measure';
+    }
+    /**
+     * _This property is an extension by Node.js. It is not available in Web browsers._
+     *
+     * Provides timing details for Node.js itself. The constructor of this class
+     * is not exposed to users.
+     * @since v8.5.0
+     */
+    class PerformanceNodeTiming extends PerformanceEntry {
+        /**
+         * The high resolution millisecond timestamp at which the Node.js process
+         * completed bootstrapping. If bootstrapping has not yet finished, the property
+         * has the value of -1.
+         * @since v8.5.0
+         */
+        readonly bootstrapComplete: number;
+        /**
+         * The high resolution millisecond timestamp at which the Node.js environment was
+         * initialized.
+         * @since v8.5.0
+         */
+        readonly environment: number;
+        /**
+         * The high resolution millisecond timestamp of the amount of time the event loop
+         * has been idle within the event loop's event provider (e.g. `epoll_wait`). This
+         * does not take CPU usage into consideration. If the event loop has not yet
+         * started (e.g., in the first tick of the main script), the property has the
+         * value of 0.
+         * @since v14.10.0, v12.19.0
+         */
+        readonly idleTime: number;
+        /**
+         * The high resolution millisecond timestamp at which the Node.js event loop
+         * exited. If the event loop has not yet exited, the property has the value of -1\.
+         * It can only have a value of not -1 in a handler of the `'exit'` event.
+         * @since v8.5.0
+         */
+        readonly loopExit: number;
+        /**
+         * The high resolution millisecond timestamp at which the Node.js event loop
+         * started. If the event loop has not yet started (e.g., in the first tick of the
+         * main script), the property has the value of -1.
+         * @since v8.5.0
+         */
+        readonly loopStart: number;
+        /**
+         * The high resolution millisecond timestamp at which the V8 platform was
+         * initialized.
+         * @since v8.5.0
+         */
+        readonly v8Start: number;
+    }
+    interface EventLoopUtilization {
+        idle: number;
+        active: number;
+        utilization: number;
+    }
+    /**
+     * @param util1 The result of a previous call to eventLoopUtilization()
+     * @param util2 The result of a previous call to eventLoopUtilization() prior to util1
+     */
+    type EventLoopUtilityFunction = (util1?: EventLoopUtilization, util2?: EventLoopUtilization) => EventLoopUtilization;
+    interface MarkOptions {
+        /**
+         * Additional optional detail to include with the mark.
+         */
+        detail?: unknown | undefined;
+        /**
+         * An optional timestamp to be used as the mark time.
+         * @default `performance.now()`.
+         */
+        startTime?: number | undefined;
+    }
+    interface MeasureOptions {
+        /**
+         * Additional optional detail to include with the mark.
+         */
+        detail?: unknown | undefined;
+        /**
+         * Duration between start and end times.
+         */
+        duration?: number | undefined;
+        /**
+         * Timestamp to be used as the end time, or a string identifying a previously recorded mark.
+         */
+        end?: number | string | undefined;
+        /**
+         * Timestamp to be used as the start time, or a string identifying a previously recorded mark.
+         */
+        start?: number | string | undefined;
+    }
+    interface TimerifyOptions {
+        /**
+         * A histogram object created using
+         * `perf_hooks.createHistogram()` that will record runtime durations in
+         * nanoseconds.
+         */
+        histogram?: RecordableHistogram | undefined;
+    }
+    interface Performance {
+        /**
+         * If name is not provided, removes all PerformanceMark objects from the Performance Timeline.
+         * If name is provided, removes only the named mark.
+         * @param name
+         */
+        clearMarks(name?: string): void;
+        /**
+         * If name is not provided, removes all PerformanceMeasure objects from the Performance Timeline.
+         * If name is provided, removes only the named measure.
+         * @param name
+         * @since v16.7.0
+         */
+        clearMeasures(name?: string): void;
+        /**
+         * Returns a list of `PerformanceEntry` objects in chronological order with respect to `performanceEntry.startTime`.
+         * If you are only interested in performance entries of certain types or that have certain names, see
+         * `performance.getEntriesByType()` and `performance.getEntriesByName()`.
+         * @since v16.7.0
+         */
+        getEntries(): PerformanceEntry[];
+        /**
+         * Returns a list of `PerformanceEntry` objects in chronological order with respect to `performanceEntry.startTime`
+         * whose `performanceEntry.name` is equal to `name`, and optionally, whose `performanceEntry.entryType` is equal to `type`.
+         * @param name
+         * @param type
+         * @since v16.7.0
+         */
+        getEntriesByName(name: string, type?: EntryType): PerformanceEntry[];
+        /**
+         * Returns a list of `PerformanceEntry` objects in chronological order with respect to `performanceEntry.startTime`
+         * whose `performanceEntry.entryType` is equal to `type`.
+         * @param type
+         * @since v16.7.0
+         */
+        getEntriesByType(type: EntryType): PerformanceEntry[];
+        /**
+         * Creates a new PerformanceMark entry in the Performance Timeline.
+         * A PerformanceMark is a subclass of PerformanceEntry whose performanceEntry.entryType is always 'mark',
+         * and whose performanceEntry.duration is always 0.
+         * Performance marks are used to mark specific significant moments in the Performance Timeline.
+         * @param name
+         * @return The PerformanceMark entry that was created
+         */
+        mark(name?: string, options?: MarkOptions): PerformanceMark;
+        /**
+         * Creates a new PerformanceMeasure entry in the Performance Timeline.
+         * A PerformanceMeasure is a subclass of PerformanceEntry whose performanceEntry.entryType is always 'measure',
+         * and whose performanceEntry.duration measures the number of milliseconds elapsed since startMark and endMark.
+         *
+         * The startMark argument may identify any existing PerformanceMark in the the Performance Timeline, or may identify
+         * any of the timestamp properties provided by the PerformanceNodeTiming class. If the named startMark does not exist,
+         * then startMark is set to timeOrigin by default.
+         *
+         * The endMark argument must identify any existing PerformanceMark in the the Performance Timeline or any of the timestamp
+         * properties provided by the PerformanceNodeTiming class. If the named endMark does not exist, an error will be thrown.
+         * @param name
+         * @param startMark
+         * @param endMark
+         * @return The PerformanceMeasure entry that was created
+         */
+        measure(name: string, startMark?: string, endMark?: string): PerformanceMeasure;
+        measure(name: string, options: MeasureOptions): PerformanceMeasure;
+        /**
+         * An instance of the PerformanceNodeTiming class that provides performance metrics for specific Node.js operational milestones.
+         */
+        readonly nodeTiming: PerformanceNodeTiming;
+        /**
+         * @return the current high resolution millisecond timestamp
+         */
+        now(): number;
+        /**
+         * The timeOrigin specifies the high resolution millisecond timestamp from which all performance metric durations are measured.
+         */
+        readonly timeOrigin: number;
+        /**
+         * Wraps a function within a new function that measures the running time of the wrapped function.
+         * A PerformanceObserver must be subscribed to the 'function' event type in order for the timing details to be accessed.
+         * @param fn
+         */
+        timerify<T extends (...params: any[]) => any>(fn: T, options?: TimerifyOptions): T;
+        /**
+         * eventLoopUtilization is similar to CPU utilization except that it is calculated using high precision wall-clock time.
+         * It represents the percentage of time the event loop has spent outside the event loop's event provider (e.g. epoll_wait).
+         * No other CPU idle time is taken into consideration.
+         */
+        eventLoopUtilization: EventLoopUtilityFunction;
+    }
+    interface PerformanceObserverEntryList {
+        /**
+         * Returns a list of `PerformanceEntry` objects in chronological order
+         * with respect to `performanceEntry.startTime`.
+         *
+         * ```js
+         * const {
+         *   performance,
+         *   PerformanceObserver
+         * } = require('perf_hooks');
+         *
+         * const obs = new PerformanceObserver((perfObserverList, observer) => {
+         *   console.log(perfObserverList.getEntries());
+         *
+         *    * [
+         *    *   PerformanceEntry {
+         *    *     name: 'test',
+         *    *     entryType: 'mark',
+         *    *     startTime: 81.465639,
+         *    *     duration: 0
+         *    *   },
+         *    *   PerformanceEntry {
+         *    *     name: 'meow',
+         *    *     entryType: 'mark',
+         *    *     startTime: 81.860064,
+         *    *     duration: 0
+         *    *   }
+         *    * ]
+         *
+         *
+         *   performance.clearMarks();
+         *   performance.clearMeasures();
+         *   observer.disconnect();
+         * });
+         * obs.observe({ type: 'mark' });
+         *
+         * performance.mark('test');
+         * performance.mark('meow');
+         * ```
+         * @since v8.5.0
+         */
+        getEntries(): PerformanceEntry[];
+        /**
+         * Returns a list of `PerformanceEntry` objects in chronological order
+         * with respect to `performanceEntry.startTime` whose `performanceEntry.name` is
+         * equal to `name`, and optionally, whose `performanceEntry.entryType` is equal to`type`.
+         *
+         * ```js
+         * const {
+         *   performance,
+         *   PerformanceObserver
+         * } = require('perf_hooks');
+         *
+         * const obs = new PerformanceObserver((perfObserverList, observer) => {
+         *   console.log(perfObserverList.getEntriesByName('meow'));
+         *
+         *    * [
+         *    *   PerformanceEntry {
+         *    *     name: 'meow',
+         *    *     entryType: 'mark',
+         *    *     startTime: 98.545991,
+         *    *     duration: 0
+         *    *   }
+         *    * ]
+         *
+         *   console.log(perfObserverList.getEntriesByName('nope')); // []
+         *
+         *   console.log(perfObserverList.getEntriesByName('test', 'mark'));
+         *
+         *    * [
+         *    *   PerformanceEntry {
+         *    *     name: 'test',
+         *    *     entryType: 'mark',
+         *    *     startTime: 63.518931,
+         *    *     duration: 0
+         *    *   }
+         *    * ]
+         *
+         *   console.log(perfObserverList.getEntriesByName('test', 'measure')); // []
+         *
+         *   performance.clearMarks();
+         *   performance.clearMeasures();
+         *   observer.disconnect();
+         * });
+         * obs.observe({ entryTypes: ['mark', 'measure'] });
+         *
+         * performance.mark('test');
+         * performance.mark('meow');
+         * ```
+         * @since v8.5.0
+         */
+        getEntriesByName(name: string, type?: EntryType): PerformanceEntry[];
+        /**
+         * Returns a list of `PerformanceEntry` objects in chronological order
+         * with respect to `performanceEntry.startTime` whose `performanceEntry.entryType`is equal to `type`.
+         *
+         * ```js
+         * const {
+         *   performance,
+         *   PerformanceObserver
+         * } = require('perf_hooks');
+         *
+         * const obs = new PerformanceObserver((perfObserverList, observer) => {
+         *   console.log(perfObserverList.getEntriesByType('mark'));
+         *
+         *    * [
+         *    *   PerformanceEntry {
+         *    *     name: 'test',
+         *    *     entryType: 'mark',
+         *    *     startTime: 55.897834,
+         *    *     duration: 0
+         *    *   },
+         *    *   PerformanceEntry {
+         *    *     name: 'meow',
+         *    *     entryType: 'mark',
+         *    *     startTime: 56.350146,
+         *    *     duration: 0
+         *    *   }
+         *    * ]
+         *
+         *   performance.clearMarks();
+         *   performance.clearMeasures();
+         *   observer.disconnect();
+         * });
+         * obs.observe({ type: 'mark' });
+         *
+         * performance.mark('test');
+         * performance.mark('meow');
+         * ```
+         * @since v8.5.0
+         */
+        getEntriesByType(type: EntryType): PerformanceEntry[];
+    }
+    type PerformanceObserverCallback = (list: PerformanceObserverEntryList, observer: PerformanceObserver) => void;
+    class PerformanceObserver extends AsyncResource {
+        constructor(callback: PerformanceObserverCallback);
+        /**
+         * Disconnects the `PerformanceObserver` instance from all notifications.
+         * @since v8.5.0
+         */
+        disconnect(): void;
+        /**
+         * Subscribes the `PerformanceObserver` instance to notifications of new `PerformanceEntry` instances identified either by `options.entryTypes`or `options.type`:
+         *
+         * ```js
+         * const {
+         *   performance,
+         *   PerformanceObserver
+         * } = require('perf_hooks');
+         *
+         * const obs = new PerformanceObserver((list, observer) => {
+         *   // Called once asynchronously. `list` contains three items.
+         * });
+         * obs.observe({ type: 'mark' });
+         *
+         * for (let n = 0; n < 3; n++)
+         *   performance.mark(`test${n}`);
+         * ```
+         * @since v8.5.0
+         */
+        observe(
+            options:
+                | {
+                      entryTypes: ReadonlyArray<EntryType>;
+                      buffered?: boolean | undefined;
+                  }
+                | {
+                      type: EntryType;
+                      buffered?: boolean | undefined;
+                  }
+        ): void;
+    }
+    namespace constants {
+        const NODE_PERFORMANCE_GC_MAJOR: number;
+        const NODE_PERFORMANCE_GC_MINOR: number;
+        const NODE_PERFORMANCE_GC_INCREMENTAL: number;
+        const NODE_PERFORMANCE_GC_WEAKCB: number;
+        const NODE_PERFORMANCE_GC_FLAGS_NO: number;
+        const NODE_PERFORMANCE_GC_FLAGS_CONSTRUCT_RETAINED: number;
+        const NODE_PERFORMANCE_GC_FLAGS_FORCED: number;
+        const NODE_PERFORMANCE_GC_FLAGS_SYNCHRONOUS_PHANTOM_PROCESSING: number;
+        const NODE_PERFORMANCE_GC_FLAGS_ALL_AVAILABLE_GARBAGE: number;
+        const NODE_PERFORMANCE_GC_FLAGS_ALL_EXTERNAL_MEMORY: number;
+        const NODE_PERFORMANCE_GC_FLAGS_SCHEDULE_IDLE: number;
+    }
+    const performance: Performance;
+    interface EventLoopMonitorOptions {
+        /**
+         * The sampling rate in milliseconds.
+         * Must be greater than zero.
+         * @default 10
+         */
+        resolution?: number | undefined;
+    }
+    interface Histogram {
+        /**
+         * Returns a `Map` object detailing the accumulated percentile distribution.
+         * @since v11.10.0
+         */
+        readonly percentiles: Map<number, number>;
+        /**
+         * The number of times the event loop delay exceeded the maximum 1 hour event
+         * loop delay threshold.
+         * @since v11.10.0
+         */
+        readonly exceeds: number;
+        /**
+         * The minimum recorded event loop delay.
+         * @since v11.10.0
+         */
+        readonly min: number;
+        /**
+         * The maximum recorded event loop delay.
+         * @since v11.10.0
+         */
+        readonly max: number;
+        /**
+         * The mean of the recorded event loop delays.
+         * @since v11.10.0
+         */
+        readonly mean: number;
+        /**
+         * The standard deviation of the recorded event loop delays.
+         * @since v11.10.0
+         */
+        readonly stddev: number;
+        /**
+         * Resets the collected histogram data.
+         * @since v11.10.0
+         */
+        reset(): void;
+        /**
+         * Returns the value at the given percentile.
+         * @since v11.10.0
+         * @param percentile A percentile value in the range (0, 100].
+         */
+        percentile(percentile: number): number;
+    }
+    interface IntervalHistogram extends Histogram {
+        /**
+         * Enables the update interval timer. Returns `true` if the timer was
+         * started, `false` if it was already started.
+         * @since v11.10.0
+         */
+        enable(): boolean;
+        /**
+         * Disables the update interval timer. Returns `true` if the timer was
+         * stopped, `false` if it was already stopped.
+         * @since v11.10.0
+         */
+        disable(): boolean;
+    }
+    interface RecordableHistogram extends Histogram {
+        /**
+         * @since v15.9.0, v14.18.0
+         * @param val The amount to record in the histogram.
+         */
+        record(val: number | bigint): void;
+        /**
+         * Calculates the amount of time (in nanoseconds) that has passed since the
+         * previous call to `recordDelta()` and records that amount in the histogram.
+         *
+         * ## Examples
+         * @since v15.9.0, v14.18.0
+         */
+        recordDelta(): void;
+        /**
+         * Adds the values from other to this histogram.
+         * @since v17.4.0, v16.14.0
+         * @param other Recordable Histogram to combine with
+         */
+         add(other: RecordableHistogram): void;
+    }
+    /**
+     * _This property is an extension by Node.js. It is not available in Web browsers._
+     *
+     * Creates an `IntervalHistogram` object that samples and reports the event loop
+     * delay over time. The delays will be reported in nanoseconds.
+     *
+     * Using a timer to detect approximate event loop delay works because the
+     * execution of timers is tied specifically to the lifecycle of the libuv
+     * event loop. That is, a delay in the loop will cause a delay in the execution
+     * of the timer, and those delays are specifically what this API is intended to
+     * detect.
+     *
+     * ```js
+     * const { monitorEventLoopDelay } = require('perf_hooks');
+     * const h = monitorEventLoopDelay({ resolution: 20 });
+     * h.enable();
+     * // Do something.
+     * h.disable();
+     * console.log(h.min);
+     * console.log(h.max);
+     * console.log(h.mean);
+     * console.log(h.stddev);
+     * console.log(h.percentiles);
+     * console.log(h.percentile(50));
+     * console.log(h.percentile(99));
+     * ```
+     * @since v11.10.0
+     */
+    function monitorEventLoopDelay(options?: EventLoopMonitorOptions): IntervalHistogram;
+    interface CreateHistogramOptions {
+        /**
+         * The minimum recordable value. Must be an integer value greater than 0.
+         * @default 1
+         */
+        min?: number | bigint | undefined;
+        /**
+         * The maximum recordable value. Must be an integer value greater than min.
+         * @default Number.MAX_SAFE_INTEGER
+         */
+        max?: number | bigint | undefined;
+        /**
+         * The number of accuracy digits. Must be a number between 1 and 5.
+         * @default 3
+         */
+        figures?: number | undefined;
+    }
+    /**
+     * Returns a `RecordableHistogram`.
+     * @since v15.9.0, v14.18.0
+     */
+    function createHistogram(options?: CreateHistogramOptions): RecordableHistogram;
+}
+declare module 'node:perf_hooks' {
+    export * from 'perf_hooks';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/process.d.ts b/igv_component/node_modules/@types/node/ts4.8/process.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..12148f911b207a631a78c58987f2dbaf7df93dc0
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/process.d.ts
@@ -0,0 +1,1482 @@
+declare module 'process' {
+    import * as tty from 'node:tty';
+    import { Worker } from 'node:worker_threads';
+    global {
+        var process: NodeJS.Process;
+        namespace NodeJS {
+            // this namespace merge is here because these are specifically used
+            // as the type for process.stdin, process.stdout, and process.stderr.
+            // they can't live in tty.d.ts because we need to disambiguate the imported name.
+            interface ReadStream extends tty.ReadStream {}
+            interface WriteStream extends tty.WriteStream {}
+            interface MemoryUsageFn {
+                /**
+                 * The `process.memoryUsage()` method iterate over each page to gather informations about memory
+                 * usage which can be slow depending on the program memory allocations.
+                 */
+                (): MemoryUsage;
+                /**
+                 * method returns an integer representing the Resident Set Size (RSS) in bytes.
+                 */
+                rss(): number;
+            }
+            interface MemoryUsage {
+                rss: number;
+                heapTotal: number;
+                heapUsed: number;
+                external: number;
+                arrayBuffers: number;
+            }
+            interface CpuUsage {
+                user: number;
+                system: number;
+            }
+            interface ProcessRelease {
+                name: string;
+                sourceUrl?: string | undefined;
+                headersUrl?: string | undefined;
+                libUrl?: string | undefined;
+                lts?: string | undefined;
+            }
+            interface ProcessVersions extends Dict<string> {
+                http_parser: string;
+                node: string;
+                v8: string;
+                ares: string;
+                uv: string;
+                zlib: string;
+                modules: string;
+                openssl: string;
+            }
+            type Platform = 'aix' | 'android' | 'darwin' | 'freebsd' | 'haiku' | 'linux' | 'openbsd' | 'sunos' | 'win32' | 'cygwin' | 'netbsd';
+            type Architecture = 'arm' | 'arm64' | 'ia32' | 'mips' | 'mipsel' | 'ppc' | 'ppc64' | 's390' | 's390x' | 'x64';
+            type Signals =
+                | 'SIGABRT'
+                | 'SIGALRM'
+                | 'SIGBUS'
+                | 'SIGCHLD'
+                | 'SIGCONT'
+                | 'SIGFPE'
+                | 'SIGHUP'
+                | 'SIGILL'
+                | 'SIGINT'
+                | 'SIGIO'
+                | 'SIGIOT'
+                | 'SIGKILL'
+                | 'SIGPIPE'
+                | 'SIGPOLL'
+                | 'SIGPROF'
+                | 'SIGPWR'
+                | 'SIGQUIT'
+                | 'SIGSEGV'
+                | 'SIGSTKFLT'
+                | 'SIGSTOP'
+                | 'SIGSYS'
+                | 'SIGTERM'
+                | 'SIGTRAP'
+                | 'SIGTSTP'
+                | 'SIGTTIN'
+                | 'SIGTTOU'
+                | 'SIGUNUSED'
+                | 'SIGURG'
+                | 'SIGUSR1'
+                | 'SIGUSR2'
+                | 'SIGVTALRM'
+                | 'SIGWINCH'
+                | 'SIGXCPU'
+                | 'SIGXFSZ'
+                | 'SIGBREAK'
+                | 'SIGLOST'
+                | 'SIGINFO';
+            type UncaughtExceptionOrigin = 'uncaughtException' | 'unhandledRejection';
+            type MultipleResolveType = 'resolve' | 'reject';
+            type BeforeExitListener = (code: number) => void;
+            type DisconnectListener = () => void;
+            type ExitListener = (code: number) => void;
+            type RejectionHandledListener = (promise: Promise<unknown>) => void;
+            type UncaughtExceptionListener = (error: Error, origin: UncaughtExceptionOrigin) => void;
+            /**
+             * Most of the time the unhandledRejection will be an Error, but this should not be relied upon
+             * as *anything* can be thrown/rejected, it is therefore unsafe to assume that the value is an Error.
+             */
+            type UnhandledRejectionListener = (reason: unknown, promise: Promise<unknown>) => void;
+            type WarningListener = (warning: Error) => void;
+            type MessageListener = (message: unknown, sendHandle: unknown) => void;
+            type SignalsListener = (signal: Signals) => void;
+            type MultipleResolveListener = (type: MultipleResolveType, promise: Promise<unknown>, value: unknown) => void;
+            type WorkerListener = (worker: Worker) => void;
+            interface Socket extends ReadWriteStream {
+                isTTY?: true | undefined;
+            }
+            // Alias for compatibility
+            interface ProcessEnv extends Dict<string> {
+                /**
+                 * Can be used to change the default timezone at runtime
+                 */
+                TZ?: string;
+            }
+            interface HRTime {
+                (time?: [number, number]): [number, number];
+                bigint(): bigint;
+            }
+            interface ProcessReport {
+                /**
+                 * Directory where the report is written.
+                 * working directory of the Node.js process.
+                 * @default '' indicating that reports are written to the current
+                 */
+                directory: string;
+                /**
+                 * Filename where the report is written.
+                 * The default value is the empty string.
+                 * @default '' the output filename will be comprised of a timestamp,
+                 * PID, and sequence number.
+                 */
+                filename: string;
+                /**
+                 * Returns a JSON-formatted diagnostic report for the running process.
+                 * The report's JavaScript stack trace is taken from err, if present.
+                 */
+                getReport(err?: Error): string;
+                /**
+                 * If true, a diagnostic report is generated on fatal errors,
+                 * such as out of memory errors or failed C++ assertions.
+                 * @default false
+                 */
+                reportOnFatalError: boolean;
+                /**
+                 * If true, a diagnostic report is generated when the process
+                 * receives the signal specified by process.report.signal.
+                 * @default false
+                 */
+                reportOnSignal: boolean;
+                /**
+                 * If true, a diagnostic report is generated on uncaught exception.
+                 * @default false
+                 */
+                reportOnUncaughtException: boolean;
+                /**
+                 * The signal used to trigger the creation of a diagnostic report.
+                 * @default 'SIGUSR2'
+                 */
+                signal: Signals;
+                /**
+                 * Writes a diagnostic report to a file. If filename is not provided, the default filename
+                 * includes the date, time, PID, and a sequence number.
+                 * The report's JavaScript stack trace is taken from err, if present.
+                 *
+                 * @param fileName Name of the file where the report is written.
+                 * This should be a relative path, that will be appended to the directory specified in
+                 * `process.report.directory`, or the current working directory of the Node.js process,
+                 * if unspecified.
+                 * @param error A custom error used for reporting the JavaScript stack.
+                 * @return Filename of the generated report.
+                 */
+                writeReport(fileName?: string): string;
+                writeReport(error?: Error): string;
+                writeReport(fileName?: string, err?: Error): string;
+            }
+            interface ResourceUsage {
+                fsRead: number;
+                fsWrite: number;
+                involuntaryContextSwitches: number;
+                ipcReceived: number;
+                ipcSent: number;
+                majorPageFault: number;
+                maxRSS: number;
+                minorPageFault: number;
+                sharedMemorySize: number;
+                signalsCount: number;
+                swappedOut: number;
+                systemCPUTime: number;
+                unsharedDataSize: number;
+                unsharedStackSize: number;
+                userCPUTime: number;
+                voluntaryContextSwitches: number;
+            }
+            interface EmitWarningOptions {
+                /**
+                 * When `warning` is a `string`, `type` is the name to use for the _type_ of warning being emitted.
+                 *
+                 * @default 'Warning'
+                 */
+                type?: string | undefined;
+                /**
+                 * A unique identifier for the warning instance being emitted.
+                 */
+                code?: string | undefined;
+                /**
+                 * When `warning` is a `string`, `ctor` is an optional function used to limit the generated stack trace.
+                 *
+                 * @default process.emitWarning
+                 */
+                ctor?: Function | undefined;
+                /**
+                 * Additional text to include with the error.
+                 */
+                detail?: string | undefined;
+            }
+            interface ProcessConfig {
+                readonly target_defaults: {
+                    readonly cflags: any[];
+                    readonly default_configuration: string;
+                    readonly defines: string[];
+                    readonly include_dirs: string[];
+                    readonly libraries: string[];
+                };
+                readonly variables: {
+                    readonly clang: number;
+                    readonly host_arch: string;
+                    readonly node_install_npm: boolean;
+                    readonly node_install_waf: boolean;
+                    readonly node_prefix: string;
+                    readonly node_shared_openssl: boolean;
+                    readonly node_shared_v8: boolean;
+                    readonly node_shared_zlib: boolean;
+                    readonly node_use_dtrace: boolean;
+                    readonly node_use_etw: boolean;
+                    readonly node_use_openssl: boolean;
+                    readonly target_arch: string;
+                    readonly v8_no_strict_aliasing: number;
+                    readonly v8_use_snapshot: boolean;
+                    readonly visibility: string;
+                };
+            }
+            interface Process extends EventEmitter {
+                /**
+                 * The `process.stdout` property returns a stream connected to`stdout` (fd `1`). It is a `net.Socket` (which is a `Duplex` stream) unless fd `1` refers to a file, in which case it is
+                 * a `Writable` stream.
+                 *
+                 * For example, to copy `process.stdin` to `process.stdout`:
+                 *
+                 * ```js
+                 * import { stdin, stdout } from 'process';
+                 *
+                 * stdin.pipe(stdout);
+                 * ```
+                 *
+                 * `process.stdout` differs from other Node.js streams in important ways. See `note on process I/O` for more information.
+                 */
+                stdout: WriteStream & {
+                    fd: 1;
+                };
+                /**
+                 * The `process.stderr` property returns a stream connected to`stderr` (fd `2`). It is a `net.Socket` (which is a `Duplex` stream) unless fd `2` refers to a file, in which case it is
+                 * a `Writable` stream.
+                 *
+                 * `process.stderr` differs from other Node.js streams in important ways. See `note on process I/O` for more information.
+                 */
+                stderr: WriteStream & {
+                    fd: 2;
+                };
+                /**
+                 * The `process.stdin` property returns a stream connected to`stdin` (fd `0`). It is a `net.Socket` (which is a `Duplex` stream) unless fd `0` refers to a file, in which case it is
+                 * a `Readable` stream.
+                 *
+                 * For details of how to read from `stdin` see `readable.read()`.
+                 *
+                 * As a `Duplex` stream, `process.stdin` can also be used in "old" mode that
+                 * is compatible with scripts written for Node.js prior to v0.10\.
+                 * For more information see `Stream compatibility`.
+                 *
+                 * In "old" streams mode the `stdin` stream is paused by default, so one
+                 * must call `process.stdin.resume()` to read from it. Note also that calling`process.stdin.resume()` itself would switch stream to "old" mode.
+                 */
+                stdin: ReadStream & {
+                    fd: 0;
+                };
+                openStdin(): Socket;
+                /**
+                 * The `process.argv` property returns an array containing the command-line
+                 * arguments passed when the Node.js process was launched. The first element will
+                 * be {@link execPath}. See `process.argv0` if access to the original value
+                 * of `argv[0]` is needed. The second element will be the path to the JavaScript
+                 * file being executed. The remaining elements will be any additional command-line
+                 * arguments.
+                 *
+                 * For example, assuming the following script for `process-args.js`:
+                 *
+                 * ```js
+                 * import { argv } from 'process';
+                 *
+                 * // print process.argv
+                 * argv.forEach((val, index) => {
+                 *   console.log(`${index}: ${val}`);
+                 * });
+                 * ```
+                 *
+                 * Launching the Node.js process as:
+                 *
+                 * ```console
+                 * $ node process-args.js one two=three four
+                 * ```
+                 *
+                 * Would generate the output:
+                 *
+                 * ```text
+                 * 0: /usr/local/bin/node
+                 * 1: /Users/mjr/work/node/process-args.js
+                 * 2: one
+                 * 3: two=three
+                 * 4: four
+                 * ```
+                 * @since v0.1.27
+                 */
+                argv: string[];
+                /**
+                 * The `process.argv0` property stores a read-only copy of the original value of`argv[0]` passed when Node.js starts.
+                 *
+                 * ```console
+                 * $ bash -c 'exec -a customArgv0 ./node'
+                 * > process.argv[0]
+                 * '/Volumes/code/external/node/out/Release/node'
+                 * > process.argv0
+                 * 'customArgv0'
+                 * ```
+                 * @since v6.4.0
+                 */
+                argv0: string;
+                /**
+                 * The `process.execArgv` property returns the set of Node.js-specific command-line
+                 * options passed when the Node.js process was launched. These options do not
+                 * appear in the array returned by the {@link argv} property, and do not
+                 * include the Node.js executable, the name of the script, or any options following
+                 * the script name. These options are useful in order to spawn child processes with
+                 * the same execution environment as the parent.
+                 *
+                 * ```console
+                 * $ node --harmony script.js --version
+                 * ```
+                 *
+                 * Results in `process.execArgv`:
+                 *
+                 * ```js
+                 * ['--harmony']
+                 * ```
+                 *
+                 * And `process.argv`:
+                 *
+                 * ```js
+                 * ['/usr/local/bin/node', 'script.js', '--version']
+                 * ```
+                 *
+                 * Refer to `Worker constructor` for the detailed behavior of worker
+                 * threads with this property.
+                 * @since v0.7.7
+                 */
+                execArgv: string[];
+                /**
+                 * The `process.execPath` property returns the absolute pathname of the executable
+                 * that started the Node.js process. Symbolic links, if any, are resolved.
+                 *
+                 * ```js
+                 * '/usr/local/bin/node'
+                 * ```
+                 * @since v0.1.100
+                 */
+                execPath: string;
+                /**
+                 * The `process.abort()` method causes the Node.js process to exit immediately and
+                 * generate a core file.
+                 *
+                 * This feature is not available in `Worker` threads.
+                 * @since v0.7.0
+                 */
+                abort(): never;
+                /**
+                 * The `process.chdir()` method changes the current working directory of the
+                 * Node.js process or throws an exception if doing so fails (for instance, if
+                 * the specified `directory` does not exist).
+                 *
+                 * ```js
+                 * import { chdir, cwd } from 'process';
+                 *
+                 * console.log(`Starting directory: ${cwd()}`);
+                 * try {
+                 *   chdir('/tmp');
+                 *   console.log(`New directory: ${cwd()}`);
+                 * } catch (err) {
+                 *   console.error(`chdir: ${err}`);
+                 * }
+                 * ```
+                 *
+                 * This feature is not available in `Worker` threads.
+                 * @since v0.1.17
+                 */
+                chdir(directory: string): void;
+                /**
+                 * The `process.cwd()` method returns the current working directory of the Node.js
+                 * process.
+                 *
+                 * ```js
+                 * import { cwd } from 'process';
+                 *
+                 * console.log(`Current directory: ${cwd()}`);
+                 * ```
+                 * @since v0.1.8
+                 */
+                cwd(): string;
+                /**
+                 * The port used by the Node.js debugger when enabled.
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * process.debugPort = 5858;
+                 * ```
+                 * @since v0.7.2
+                 */
+                debugPort: number;
+                /**
+                 * The `process.emitWarning()` method can be used to emit custom or application
+                 * specific process warnings. These can be listened for by adding a handler to the `'warning'` event.
+                 *
+                 * ```js
+                 * import { emitWarning } from 'process';
+                 *
+                 * // Emit a warning with a code and additional detail.
+                 * emitWarning('Something happened!', {
+                 *   code: 'MY_WARNING',
+                 *   detail: 'This is some additional information'
+                 * });
+                 * // Emits:
+                 * // (node:56338) [MY_WARNING] Warning: Something happened!
+                 * // This is some additional information
+                 * ```
+                 *
+                 * In this example, an `Error` object is generated internally by`process.emitWarning()` and passed through to the `'warning'` handler.
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * process.on('warning', (warning) => {
+                 *   console.warn(warning.name);    // 'Warning'
+                 *   console.warn(warning.message); // 'Something happened!'
+                 *   console.warn(warning.code);    // 'MY_WARNING'
+                 *   console.warn(warning.stack);   // Stack trace
+                 *   console.warn(warning.detail);  // 'This is some additional information'
+                 * });
+                 * ```
+                 *
+                 * If `warning` is passed as an `Error` object, the `options` argument is ignored.
+                 * @since v8.0.0
+                 * @param warning The warning to emit.
+                 */
+                emitWarning(warning: string | Error, ctor?: Function): void;
+                emitWarning(warning: string | Error, type?: string, ctor?: Function): void;
+                emitWarning(warning: string | Error, type?: string, code?: string, ctor?: Function): void;
+                emitWarning(warning: string | Error, options?: EmitWarningOptions): void;
+                /**
+                 * The `process.env` property returns an object containing the user environment.
+                 * See [`environ(7)`](http://man7.org/linux/man-pages/man7/environ.7.html).
+                 *
+                 * An example of this object looks like:
+                 *
+                 * ```js
+                 * {
+                 *   TERM: 'xterm-256color',
+                 *   SHELL: '/usr/local/bin/bash',
+                 *   USER: 'maciej',
+                 *   PATH: '~/.bin/:/usr/bin:/bin:/usr/sbin:/sbin:/usr/local/bin',
+                 *   PWD: '/Users/maciej',
+                 *   EDITOR: 'vim',
+                 *   SHLVL: '1',
+                 *   HOME: '/Users/maciej',
+                 *   LOGNAME: 'maciej',
+                 *   _: '/usr/local/bin/node'
+                 * }
+                 * ```
+                 *
+                 * It is possible to modify this object, but such modifications will not be
+                 * reflected outside the Node.js process, or (unless explicitly requested)
+                 * to other `Worker` threads.
+                 * In other words, the following example would not work:
+                 *
+                 * ```console
+                 * $ node -e 'process.env.foo = "bar"' &#x26;&#x26; echo $foo
+                 * ```
+                 *
+                 * While the following will:
+                 *
+                 * ```js
+                 * import { env } from 'process';
+                 *
+                 * env.foo = 'bar';
+                 * console.log(env.foo);
+                 * ```
+                 *
+                 * Assigning a property on `process.env` will implicitly convert the value
+                 * to a string. **This behavior is deprecated.** Future versions of Node.js may
+                 * throw an error when the value is not a string, number, or boolean.
+                 *
+                 * ```js
+                 * import { env } from 'process';
+                 *
+                 * env.test = null;
+                 * console.log(env.test);
+                 * // => 'null'
+                 * env.test = undefined;
+                 * console.log(env.test);
+                 * // => 'undefined'
+                 * ```
+                 *
+                 * Use `delete` to delete a property from `process.env`.
+                 *
+                 * ```js
+                 * import { env } from 'process';
+                 *
+                 * env.TEST = 1;
+                 * delete env.TEST;
+                 * console.log(env.TEST);
+                 * // => undefined
+                 * ```
+                 *
+                 * On Windows operating systems, environment variables are case-insensitive.
+                 *
+                 * ```js
+                 * import { env } from 'process';
+                 *
+                 * env.TEST = 1;
+                 * console.log(env.test);
+                 * // => 1
+                 * ```
+                 *
+                 * Unless explicitly specified when creating a `Worker` instance,
+                 * each `Worker` thread has its own copy of `process.env`, based on its
+                 * parent thread’s `process.env`, or whatever was specified as the `env` option
+                 * to the `Worker` constructor. Changes to `process.env` will not be visible
+                 * across `Worker` threads, and only the main thread can make changes that
+                 * are visible to the operating system or to native add-ons.
+                 * @since v0.1.27
+                 */
+                env: ProcessEnv;
+                /**
+                 * The `process.exit()` method instructs Node.js to terminate the process
+                 * synchronously with an exit status of `code`. If `code` is omitted, exit uses
+                 * either the 'success' code `0` or the value of `process.exitCode` if it has been
+                 * set. Node.js will not terminate until all the `'exit'` event listeners are
+                 * called.
+                 *
+                 * To exit with a 'failure' code:
+                 *
+                 * ```js
+                 * import { exit } from 'process';
+                 *
+                 * exit(1);
+                 * ```
+                 *
+                 * The shell that executed Node.js should see the exit code as `1`.
+                 *
+                 * Calling `process.exit()` will force the process to exit as quickly as possible
+                 * even if there are still asynchronous operations pending that have not yet
+                 * completed fully, including I/O operations to `process.stdout` and`process.stderr`.
+                 *
+                 * In most situations, it is not actually necessary to call `process.exit()`explicitly. The Node.js process will exit on its own _if there is no additional_
+                 * _work pending_ in the event loop. The `process.exitCode` property can be set to
+                 * tell the process which exit code to use when the process exits gracefully.
+                 *
+                 * For instance, the following example illustrates a _misuse_ of the`process.exit()` method that could lead to data printed to stdout being
+                 * truncated and lost:
+                 *
+                 * ```js
+                 * import { exit } from 'process';
+                 *
+                 * // This is an example of what *not* to do:
+                 * if (someConditionNotMet()) {
+                 *   printUsageToStdout();
+                 *   exit(1);
+                 * }
+                 * ```
+                 *
+                 * The reason this is problematic is because writes to `process.stdout` in Node.js
+                 * are sometimes _asynchronous_ and may occur over multiple ticks of the Node.js
+                 * event loop. Calling `process.exit()`, however, forces the process to exit _before_ those additional writes to `stdout` can be performed.
+                 *
+                 * Rather than calling `process.exit()` directly, the code _should_ set the`process.exitCode` and allow the process to exit naturally by avoiding
+                 * scheduling any additional work for the event loop:
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * // How to properly set the exit code while letting
+                 * // the process exit gracefully.
+                 * if (someConditionNotMet()) {
+                 *   printUsageToStdout();
+                 *   process.exitCode = 1;
+                 * }
+                 * ```
+                 *
+                 * If it is necessary to terminate the Node.js process due to an error condition,
+                 * throwing an _uncaught_ error and allowing the process to terminate accordingly
+                 * is safer than calling `process.exit()`.
+                 *
+                 * In `Worker` threads, this function stops the current thread rather
+                 * than the current process.
+                 * @since v0.1.13
+                 * @param [code=0] The exit code.
+                 */
+                exit(code?: number): never;
+                /**
+                 * A number which will be the process exit code, when the process either
+                 * exits gracefully, or is exited via {@link exit} without specifying
+                 * a code.
+                 *
+                 * Specifying a code to {@link exit} will override any
+                 * previous setting of `process.exitCode`.
+                 * @since v0.11.8
+                 */
+                exitCode?: number | undefined;
+                /**
+                 * The `process.getgid()` method returns the numerical group identity of the
+                 * process. (See [`getgid(2)`](http://man7.org/linux/man-pages/man2/getgid.2.html).)
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.getgid) {
+                 *   console.log(`Current gid: ${process.getgid()}`);
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * @since v0.1.31
+                 */
+                getgid?: () => number;
+                /**
+                 * The `process.setgid()` method sets the group identity of the process. (See [`setgid(2)`](http://man7.org/linux/man-pages/man2/setgid.2.html).) The `id` can be passed as either a
+                 * numeric ID or a group name
+                 * string. If a group name is specified, this method blocks while resolving the
+                 * associated numeric ID.
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.getgid &#x26;&#x26; process.setgid) {
+                 *   console.log(`Current gid: ${process.getgid()}`);
+                 *   try {
+                 *     process.setgid(501);
+                 *     console.log(`New gid: ${process.getgid()}`);
+                 *   } catch (err) {
+                 *     console.log(`Failed to set gid: ${err}`);
+                 *   }
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * This feature is not available in `Worker` threads.
+                 * @since v0.1.31
+                 * @param id The group name or ID
+                 */
+                setgid?: (id: number | string) => void;
+                /**
+                 * The `process.getuid()` method returns the numeric user identity of the process.
+                 * (See [`getuid(2)`](http://man7.org/linux/man-pages/man2/getuid.2.html).)
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.getuid) {
+                 *   console.log(`Current uid: ${process.getuid()}`);
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * @since v0.1.28
+                 */
+                getuid?: () => number;
+                /**
+                 * The `process.setuid(id)` method sets the user identity of the process. (See [`setuid(2)`](http://man7.org/linux/man-pages/man2/setuid.2.html).) The `id` can be passed as either a
+                 * numeric ID or a username string.
+                 * If a username is specified, the method blocks while resolving the associated
+                 * numeric ID.
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.getuid &#x26;&#x26; process.setuid) {
+                 *   console.log(`Current uid: ${process.getuid()}`);
+                 *   try {
+                 *     process.setuid(501);
+                 *     console.log(`New uid: ${process.getuid()}`);
+                 *   } catch (err) {
+                 *     console.log(`Failed to set uid: ${err}`);
+                 *   }
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * This feature is not available in `Worker` threads.
+                 * @since v0.1.28
+                 */
+                setuid?: (id: number | string) => void;
+                /**
+                 * The `process.geteuid()` method returns the numerical effective user identity of
+                 * the process. (See [`geteuid(2)`](http://man7.org/linux/man-pages/man2/geteuid.2.html).)
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.geteuid) {
+                 *   console.log(`Current uid: ${process.geteuid()}`);
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * @since v2.0.0
+                 */
+                geteuid?: () => number;
+                /**
+                 * The `process.seteuid()` method sets the effective user identity of the process.
+                 * (See [`seteuid(2)`](http://man7.org/linux/man-pages/man2/seteuid.2.html).) The `id` can be passed as either a numeric ID or a username
+                 * string. If a username is specified, the method blocks while resolving the
+                 * associated numeric ID.
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.geteuid &#x26;&#x26; process.seteuid) {
+                 *   console.log(`Current uid: ${process.geteuid()}`);
+                 *   try {
+                 *     process.seteuid(501);
+                 *     console.log(`New uid: ${process.geteuid()}`);
+                 *   } catch (err) {
+                 *     console.log(`Failed to set uid: ${err}`);
+                 *   }
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * This feature is not available in `Worker` threads.
+                 * @since v2.0.0
+                 * @param id A user name or ID
+                 */
+                seteuid?: (id: number | string) => void;
+                /**
+                 * The `process.getegid()` method returns the numerical effective group identity
+                 * of the Node.js process. (See [`getegid(2)`](http://man7.org/linux/man-pages/man2/getegid.2.html).)
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.getegid) {
+                 *   console.log(`Current gid: ${process.getegid()}`);
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * @since v2.0.0
+                 */
+                getegid?: () => number;
+                /**
+                 * The `process.setegid()` method sets the effective group identity of the process.
+                 * (See [`setegid(2)`](http://man7.org/linux/man-pages/man2/setegid.2.html).) The `id` can be passed as either a numeric ID or a group
+                 * name string. If a group name is specified, this method blocks while resolving
+                 * the associated a numeric ID.
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.getegid &#x26;&#x26; process.setegid) {
+                 *   console.log(`Current gid: ${process.getegid()}`);
+                 *   try {
+                 *     process.setegid(501);
+                 *     console.log(`New gid: ${process.getegid()}`);
+                 *   } catch (err) {
+                 *     console.log(`Failed to set gid: ${err}`);
+                 *   }
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * This feature is not available in `Worker` threads.
+                 * @since v2.0.0
+                 * @param id A group name or ID
+                 */
+                setegid?: (id: number | string) => void;
+                /**
+                 * The `process.getgroups()` method returns an array with the supplementary group
+                 * IDs. POSIX leaves it unspecified if the effective group ID is included but
+                 * Node.js ensures it always is.
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.getgroups) {
+                 *   console.log(process.getgroups()); // [ 16, 21, 297 ]
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * @since v0.9.4
+                 */
+                getgroups?: () => number[];
+                /**
+                 * The `process.setgroups()` method sets the supplementary group IDs for the
+                 * Node.js process. This is a privileged operation that requires the Node.js
+                 * process to have `root` or the `CAP_SETGID` capability.
+                 *
+                 * The `groups` array can contain numeric group IDs, group names, or both.
+                 *
+                 * ```js
+                 * import process from 'process';
+                 *
+                 * if (process.getgroups &#x26;&#x26; process.setgroups) {
+                 *   try {
+                 *     process.setgroups([501]);
+                 *     console.log(process.getgroups()); // new groups
+                 *   } catch (err) {
+                 *     console.log(`Failed to set groups: ${err}`);
+                 *   }
+                 * }
+                 * ```
+                 *
+                 * This function is only available on POSIX platforms (i.e. not Windows or
+                 * Android).
+                 * This feature is not available in `Worker` threads.
+                 * @since v0.9.4
+                 */
+                setgroups?: (groups: ReadonlyArray<string | number>) => void;
+                /**
+                 * The `process.setUncaughtExceptionCaptureCallback()` function sets a function
+                 * that will be invoked when an uncaught exception occurs, which will receive the
+                 * exception value itself as its first argument.
+                 *
+                 * If such a function is set, the `'uncaughtException'` event will
+                 * not be emitted. If `--abort-on-uncaught-exception` was passed from the
+                 * command line or set through `v8.setFlagsFromString()`, the process will
+                 * not abort. Actions configured to take place on exceptions such as report
+                 * generations will be affected too
+                 *
+                 * To unset the capture function,`process.setUncaughtExceptionCaptureCallback(null)` may be used. Calling this
+                 * method with a non-`null` argument while another capture function is set will
+                 * throw an error.
+                 *
+                 * Using this function is mutually exclusive with using the deprecated `domain` built-in module.
+                 * @since v9.3.0
+                 */
+                setUncaughtExceptionCaptureCallback(cb: ((err: Error) => void) | null): void;
+                /**
+                 * Indicates whether a callback has been set using {@link setUncaughtExceptionCaptureCallback}.
+                 * @since v9.3.0
+                 */
+                hasUncaughtExceptionCaptureCallback(): boolean;
+                /**
+                 * The `process.version` property contains the Node.js version string.
+                 *
+                 * ```js
+                 * import { version } from 'process';
+                 *
+                 * console.log(`Version: ${version}`);
+                 * // Version: v14.8.0
+                 * ```
+                 *
+                 * To get the version string without the prepended _v_, use`process.versions.node`.
+                 * @since v0.1.3
+                 */
+                readonly version: string;
+                /**
+                 * The `process.versions` property returns an object listing the version strings of
+                 * Node.js and its dependencies. `process.versions.modules` indicates the current
+                 * ABI version, which is increased whenever a C++ API changes. Node.js will refuse
+                 * to load modules that were compiled against a different module ABI version.
+                 *
+                 * ```js
+                 * import { versions } from 'process';
+                 *
+                 * console.log(versions);
+                 * ```
+                 *
+                 * Will generate an object similar to:
+                 *
+                 * ```console
+                 * { node: '11.13.0',
+                 *   v8: '7.0.276.38-node.18',
+                 *   uv: '1.27.0',
+                 *   zlib: '1.2.11',
+                 *   brotli: '1.0.7',
+                 *   ares: '1.15.0',
+                 *   modules: '67',
+                 *   nghttp2: '1.34.0',
+                 *   napi: '4',
+                 *   llhttp: '1.1.1',
+                 *   openssl: '1.1.1b',
+                 *   cldr: '34.0',
+                 *   icu: '63.1',
+                 *   tz: '2018e',
+                 *   unicode: '11.0' }
+                 * ```
+                 * @since v0.2.0
+                 */
+                readonly versions: ProcessVersions;
+                /**
+                 * The `process.config` property returns an `Object` containing the JavaScript
+                 * representation of the configure options used to compile the current Node.js
+                 * executable. This is the same as the `config.gypi` file that was produced when
+                 * running the `./configure` script.
+                 *
+                 * An example of the possible output looks like:
+                 *
+                 * ```js
+                 * {
+                 *   target_defaults:
+                 *    { cflags: [],
+                 *      default_configuration: 'Release',
+                 *      defines: [],
+                 *      include_dirs: [],
+                 *      libraries: [] },
+                 *   variables:
+                 *    {
+                 *      host_arch: 'x64',
+                 *      napi_build_version: 5,
+                 *      node_install_npm: 'true',
+                 *      node_prefix: '',
+                 *      node_shared_cares: 'false',
+                 *      node_shared_http_parser: 'false',
+                 *      node_shared_libuv: 'false',
+                 *      node_shared_zlib: 'false',
+                 *      node_use_dtrace: 'false',
+                 *      node_use_openssl: 'true',
+                 *      node_shared_openssl: 'false',
+                 *      strict_aliasing: 'true',
+                 *      target_arch: 'x64',
+                 *      v8_use_snapshot: 1
+                 *    }
+                 * }
+                 * ```
+                 *
+                 * The `process.config` property is **not** read-only and there are existing
+                 * modules in the ecosystem that are known to extend, modify, or entirely replace
+                 * the value of `process.config`.
+                 *
+                 * Modifying the `process.config` property, or any child-property of the`process.config` object has been deprecated. The `process.config` will be made
+                 * read-only in a future release.
+                 * @since v0.7.7
+                 */
+                readonly config: ProcessConfig;
+                /**
+                 * The `process.kill()` method sends the `signal` to the process identified by`pid`.
+                 *
+                 * Signal names are strings such as `'SIGINT'` or `'SIGHUP'`. See `Signal Events` and [`kill(2)`](http://man7.org/linux/man-pages/man2/kill.2.html) for more information.
+                 *
+                 * This method will throw an error if the target `pid` does not exist. As a special
+                 * case, a signal of `0` can be used to test for the existence of a process.
+                 * Windows platforms will throw an error if the `pid` is used to kill a process
+                 * group.
+                 *
+                 * Even though the name of this function is `process.kill()`, it is really just a
+                 * signal sender, like the `kill` system call. The signal sent may do something
+                 * other than kill the target process.
+                 *
+                 * ```js
+                 * import process, { kill } from 'process';
+                 *
+                 * process.on('SIGHUP', () => {
+                 *   console.log('Got SIGHUP signal.');
+                 * });
+                 *
+                 * setTimeout(() => {
+                 *   console.log('Exiting.');
+                 *   process.exit(0);
+                 * }, 100);
+                 *
+                 * kill(process.pid, 'SIGHUP');
+                 * ```
+                 *
+                 * When `SIGUSR1` is received by a Node.js process, Node.js will start the
+                 * debugger. See `Signal Events`.
+                 * @since v0.0.6
+                 * @param pid A process ID
+                 * @param [signal='SIGTERM'] The signal to send, either as a string or number.
+                 */
+                kill(pid: number, signal?: string | number): true;
+                /**
+                 * The `process.pid` property returns the PID of the process.
+                 *
+                 * ```js
+                 * import { pid } from 'process';
+                 *
+                 * console.log(`This process is pid ${pid}`);
+                 * ```
+                 * @since v0.1.15
+                 */
+                readonly pid: number;
+                /**
+                 * The `process.ppid` property returns the PID of the parent of the
+                 * current process.
+                 *
+                 * ```js
+                 * import { ppid } from 'process';
+                 *
+                 * console.log(`The parent process is pid ${ppid}`);
+                 * ```
+                 * @since v9.2.0, v8.10.0, v6.13.0
+                 */
+                readonly ppid: number;
+                /**
+                 * The `process.title` property returns the current process title (i.e. returns
+                 * the current value of `ps`). Assigning a new value to `process.title` modifies
+                 * the current value of `ps`.
+                 *
+                 * When a new value is assigned, different platforms will impose different maximum
+                 * length restrictions on the title. Usually such restrictions are quite limited.
+                 * For instance, on Linux and macOS, `process.title` is limited to the size of the
+                 * binary name plus the length of the command-line arguments because setting the`process.title` overwrites the `argv` memory of the process. Node.js v0.8
+                 * allowed for longer process title strings by also overwriting the `environ`memory but that was potentially insecure and confusing in some (rather obscure)
+                 * cases.
+                 *
+                 * Assigning a value to `process.title` might not result in an accurate label
+                 * within process manager applications such as macOS Activity Monitor or Windows
+                 * Services Manager.
+                 * @since v0.1.104
+                 */
+                title: string;
+                /**
+                 * The operating system CPU architecture for which the Node.js binary was compiled.
+                 * Possible values are: `'arm'`, `'arm64'`, `'ia32'`, `'mips'`,`'mipsel'`, `'ppc'`,`'ppc64'`, `'s390'`, `'s390x'`, and `'x64'`.
+                 *
+                 * ```js
+                 * import { arch } from 'process';
+                 *
+                 * console.log(`This processor architecture is ${arch}`);
+                 * ```
+                 * @since v0.5.0
+                 */
+                readonly arch: Architecture;
+                /**
+                 * The `process.platform` property returns a string identifying the operating
+                 * system platform for which the Node.js binary was compiled.
+                 *
+                 * Currently possible values are:
+                 *
+                 * * `'aix'`
+                 * * `'darwin'`
+                 * * `'freebsd'`
+                 * * `'linux'`
+                 * * `'openbsd'`
+                 * * `'sunos'`
+                 * * `'win32'`
+                 *
+                 * ```js
+                 * import { platform } from 'process';
+                 *
+                 * console.log(`This platform is ${platform}`);
+                 * ```
+                 *
+                 * The value `'android'` may also be returned if the Node.js is built on the
+                 * Android operating system. However, Android support in Node.js [is experimental](https://github.com/nodejs/node/blob/HEAD/BUILDING.md#androidandroid-based-devices-eg-firefox-os).
+                 * @since v0.1.16
+                 */
+                readonly platform: Platform;
+                /**
+                 * The `process.mainModule` property provides an alternative way of retrieving `require.main`. The difference is that if the main module changes at
+                 * runtime, `require.main` may still refer to the original main module in
+                 * modules that were required before the change occurred. Generally, it's
+                 * safe to assume that the two refer to the same module.
+                 *
+                 * As with `require.main`, `process.mainModule` will be `undefined` if there
+                 * is no entry script.
+                 * @since v0.1.17
+                 * @deprecated Since v14.0.0 - Use `main` instead.
+                 */
+                mainModule?: Module | undefined;
+                memoryUsage: MemoryUsageFn;
+                /**
+                 * The `process.cpuUsage()` method returns the user and system CPU time usage of
+                 * the current process, in an object with properties `user` and `system`, whose
+                 * values are microsecond values (millionth of a second). These values measure time
+                 * spent in user and system code respectively, and may end up being greater than
+                 * actual elapsed time if multiple CPU cores are performing work for this process.
+                 *
+                 * The result of a previous call to `process.cpuUsage()` can be passed as the
+                 * argument to the function, to get a diff reading.
+                 *
+                 * ```js
+                 * import { cpuUsage } from 'process';
+                 *
+                 * const startUsage = cpuUsage();
+                 * // { user: 38579, system: 6986 }
+                 *
+                 * // spin the CPU for 500 milliseconds
+                 * const now = Date.now();
+                 * while (Date.now() - now < 500);
+                 *
+                 * console.log(cpuUsage(startUsage));
+                 * // { user: 514883, system: 11226 }
+                 * ```
+                 * @since v6.1.0
+                 * @param previousValue A previous return value from calling `process.cpuUsage()`
+                 */
+                cpuUsage(previousValue?: CpuUsage): CpuUsage;
+                /**
+                 * `process.nextTick()` adds `callback` to the "next tick queue". This queue is
+                 * fully drained after the current operation on the JavaScript stack runs to
+                 * completion and before the event loop is allowed to continue. It's possible to
+                 * create an infinite loop if one were to recursively call `process.nextTick()`.
+                 * See the [Event Loop](https://nodejs.org/en/docs/guides/event-loop-timers-and-nexttick/#process-nexttick) guide for more background.
+                 *
+                 * ```js
+                 * import { nextTick } from 'process';
+                 *
+                 * console.log('start');
+                 * nextTick(() => {
+                 *   console.log('nextTick callback');
+                 * });
+                 * console.log('scheduled');
+                 * // Output:
+                 * // start
+                 * // scheduled
+                 * // nextTick callback
+                 * ```
+                 *
+                 * This is important when developing APIs in order to give users the opportunity
+                 * to assign event handlers _after_ an object has been constructed but before any
+                 * I/O has occurred:
+                 *
+                 * ```js
+                 * import { nextTick } from 'process';
+                 *
+                 * function MyThing(options) {
+                 *   this.setupOptions(options);
+                 *
+                 *   nextTick(() => {
+                 *     this.startDoingStuff();
+                 *   });
+                 * }
+                 *
+                 * const thing = new MyThing();
+                 * thing.getReadyForStuff();
+                 *
+                 * // thing.startDoingStuff() gets called now, not before.
+                 * ```
+                 *
+                 * It is very important for APIs to be either 100% synchronous or 100%
+                 * asynchronous. Consider this example:
+                 *
+                 * ```js
+                 * // WARNING!  DO NOT USE!  BAD UNSAFE HAZARD!
+                 * function maybeSync(arg, cb) {
+                 *   if (arg) {
+                 *     cb();
+                 *     return;
+                 *   }
+                 *
+                 *   fs.stat('file', cb);
+                 * }
+                 * ```
+                 *
+                 * This API is hazardous because in the following case:
+                 *
+                 * ```js
+                 * const maybeTrue = Math.random() > 0.5;
+                 *
+                 * maybeSync(maybeTrue, () => {
+                 *   foo();
+                 * });
+                 *
+                 * bar();
+                 * ```
+                 *
+                 * It is not clear whether `foo()` or `bar()` will be called first.
+                 *
+                 * The following approach is much better:
+                 *
+                 * ```js
+                 * import { nextTick } from 'process';
+                 *
+                 * function definitelyAsync(arg, cb) {
+                 *   if (arg) {
+                 *     nextTick(cb);
+                 *     return;
+                 *   }
+                 *
+                 *   fs.stat('file', cb);
+                 * }
+                 * ```
+                 * @since v0.1.26
+                 * @param args Additional arguments to pass when invoking the `callback`
+                 */
+                nextTick(callback: Function, ...args: any[]): void;
+                /**
+                 * The `process.release` property returns an `Object` containing metadata related
+                 * to the current release, including URLs for the source tarball and headers-only
+                 * tarball.
+                 *
+                 * `process.release` contains the following properties:
+                 *
+                 * ```js
+                 * {
+                 *   name: 'node',
+                 *   lts: 'Erbium',
+                 *   sourceUrl: 'https://nodejs.org/download/release/v12.18.1/node-v12.18.1.tar.gz',
+                 *   headersUrl: 'https://nodejs.org/download/release/v12.18.1/node-v12.18.1-headers.tar.gz',
+                 *   libUrl: 'https://nodejs.org/download/release/v12.18.1/win-x64/node.lib'
+                 * }
+                 * ```
+                 *
+                 * In custom builds from non-release versions of the source tree, only the`name` property may be present. The additional properties should not be
+                 * relied upon to exist.
+                 * @since v3.0.0
+                 */
+                readonly release: ProcessRelease;
+                features: {
+                    inspector: boolean;
+                    debug: boolean;
+                    uv: boolean;
+                    ipv6: boolean;
+                    tls_alpn: boolean;
+                    tls_sni: boolean;
+                    tls_ocsp: boolean;
+                    tls: boolean;
+                };
+                /**
+                 * `process.umask()` returns the Node.js process's file mode creation mask. Child
+                 * processes inherit the mask from the parent process.
+                 * @since v0.1.19
+                 * @deprecated Calling `process.umask()` with no argument causes the process-wide umask to be written twice. This introduces a race condition between threads, and is a potential   *
+                 * security vulnerability. There is no safe, cross-platform alternative API.
+                 */
+                umask(): number;
+                /**
+                 * Can only be set if not in worker thread.
+                 */
+                umask(mask: string | number): number;
+                /**
+                 * The `process.uptime()` method returns the number of seconds the current Node.js
+                 * process has been running.
+                 *
+                 * The return value includes fractions of a second. Use `Math.floor()` to get whole
+                 * seconds.
+                 * @since v0.5.0
+                 */
+                uptime(): number;
+                hrtime: HRTime;
+                /**
+                 * If Node.js is spawned with an IPC channel, the `process.send()` method can be
+                 * used to send messages to the parent process. Messages will be received as a `'message'` event on the parent's `ChildProcess` object.
+                 *
+                 * If Node.js was not spawned with an IPC channel, `process.send` will be`undefined`.
+                 *
+                 * The message goes through serialization and parsing. The resulting message might
+                 * not be the same as what is originally sent.
+                 * @since v0.5.9
+                 * @param options used to parameterize the sending of certain types of handles.`options` supports the following properties:
+                 */
+                send?(
+                    message: any,
+                    sendHandle?: any,
+                    options?: {
+                        swallowErrors?: boolean | undefined;
+                    },
+                    callback?: (error: Error | null) => void
+                ): boolean;
+                /**
+                 * If the Node.js process is spawned with an IPC channel (see the `Child Process` and `Cluster` documentation), the `process.disconnect()` method will close the
+                 * IPC channel to the parent process, allowing the child process to exit gracefully
+                 * once there are no other connections keeping it alive.
+                 *
+                 * The effect of calling `process.disconnect()` is the same as calling `ChildProcess.disconnect()` from the parent process.
+                 *
+                 * If the Node.js process was not spawned with an IPC channel,`process.disconnect()` will be `undefined`.
+                 * @since v0.7.2
+                 */
+                disconnect(): void;
+                /**
+                 * If the Node.js process is spawned with an IPC channel (see the `Child Process` and `Cluster` documentation), the `process.connected` property will return`true` so long as the IPC
+                 * channel is connected and will return `false` after`process.disconnect()` is called.
+                 *
+                 * Once `process.connected` is `false`, it is no longer possible to send messages
+                 * over the IPC channel using `process.send()`.
+                 * @since v0.7.2
+                 */
+                connected: boolean;
+                /**
+                 * The `process.allowedNodeEnvironmentFlags` property is a special,
+                 * read-only `Set` of flags allowable within the `NODE_OPTIONS` environment variable.
+                 *
+                 * `process.allowedNodeEnvironmentFlags` extends `Set`, but overrides`Set.prototype.has` to recognize several different possible flag
+                 * representations. `process.allowedNodeEnvironmentFlags.has()` will
+                 * return `true` in the following cases:
+                 *
+                 * * Flags may omit leading single (`-`) or double (`--`) dashes; e.g.,`inspect-brk` for `--inspect-brk`, or `r` for `-r`.
+                 * * Flags passed through to V8 (as listed in `--v8-options`) may replace
+                 * one or more _non-leading_ dashes for an underscore, or vice-versa;
+                 * e.g., `--perf_basic_prof`, `--perf-basic-prof`, `--perf_basic-prof`,
+                 * etc.
+                 * * Flags may contain one or more equals (`=`) characters; all
+                 * characters after and including the first equals will be ignored;
+                 * e.g., `--stack-trace-limit=100`.
+                 * * Flags _must_ be allowable within `NODE_OPTIONS`.
+                 *
+                 * When iterating over `process.allowedNodeEnvironmentFlags`, flags will
+                 * appear only _once_; each will begin with one or more dashes. Flags
+                 * passed through to V8 will contain underscores instead of non-leading
+                 * dashes:
+                 *
+                 * ```js
+                 * import { allowedNodeEnvironmentFlags } from 'process';
+                 *
+                 * allowedNodeEnvironmentFlags.forEach((flag) => {
+                 *   // -r
+                 *   // --inspect-brk
+                 *   // --abort_on_uncaught_exception
+                 *   // ...
+                 * });
+                 * ```
+                 *
+                 * The methods `add()`, `clear()`, and `delete()` of`process.allowedNodeEnvironmentFlags` do nothing, and will fail
+                 * silently.
+                 *
+                 * If Node.js was compiled _without_ `NODE_OPTIONS` support (shown in {@link config}), `process.allowedNodeEnvironmentFlags` will
+                 * contain what _would have_ been allowable.
+                 * @since v10.10.0
+                 */
+                allowedNodeEnvironmentFlags: ReadonlySet<string>;
+                /**
+                 * `process.report` is an object whose methods are used to generate diagnostic
+                 * reports for the current process. Additional documentation is available in the `report documentation`.
+                 * @since v11.8.0
+                 */
+                report?: ProcessReport | undefined;
+                /**
+                 * ```js
+                 * import { resourceUsage } from 'process';
+                 *
+                 * console.log(resourceUsage());
+                 * /*
+                 *   Will output:
+                 *   {
+                 *     userCPUTime: 82872,
+                 *     systemCPUTime: 4143,
+                 *     maxRSS: 33164,
+                 *     sharedMemorySize: 0,
+                 *     unsharedDataSize: 0,
+                 *     unsharedStackSize: 0,
+                 *     minorPageFault: 2469,
+                 *     majorPageFault: 0,
+                 *     swappedOut: 0,
+                 *     fsRead: 0,
+                 *     fsWrite: 8,
+                 *     ipcSent: 0,
+                 *     ipcReceived: 0,
+                 *     signalsCount: 0,
+                 *     voluntaryContextSwitches: 79,
+                 *     involuntaryContextSwitches: 1
+                 *   }
+                 *
+                 * ```
+                 * @since v12.6.0
+                 * @return the resource usage for the current process. All of these values come from the `uv_getrusage` call which returns a [`uv_rusage_t` struct][uv_rusage_t].
+                 */
+                resourceUsage(): ResourceUsage;
+                /**
+                 * The `process.traceDeprecation` property indicates whether the`--trace-deprecation` flag is set on the current Node.js process. See the
+                 * documentation for the `'warning' event` and the `emitWarning() method` for more information about this
+                 * flag's behavior.
+                 * @since v0.8.0
+                 */
+                traceDeprecation: boolean;
+                /* EventEmitter */
+                addListener(event: 'beforeExit', listener: BeforeExitListener): this;
+                addListener(event: 'disconnect', listener: DisconnectListener): this;
+                addListener(event: 'exit', listener: ExitListener): this;
+                addListener(event: 'rejectionHandled', listener: RejectionHandledListener): this;
+                addListener(event: 'uncaughtException', listener: UncaughtExceptionListener): this;
+                addListener(event: 'uncaughtExceptionMonitor', listener: UncaughtExceptionListener): this;
+                addListener(event: 'unhandledRejection', listener: UnhandledRejectionListener): this;
+                addListener(event: 'warning', listener: WarningListener): this;
+                addListener(event: 'message', listener: MessageListener): this;
+                addListener(event: Signals, listener: SignalsListener): this;
+                addListener(event: 'multipleResolves', listener: MultipleResolveListener): this;
+                addListener(event: 'worker', listener: WorkerListener): this;
+                emit(event: 'beforeExit', code: number): boolean;
+                emit(event: 'disconnect'): boolean;
+                emit(event: 'exit', code: number): boolean;
+                emit(event: 'rejectionHandled', promise: Promise<unknown>): boolean;
+                emit(event: 'uncaughtException', error: Error): boolean;
+                emit(event: 'uncaughtExceptionMonitor', error: Error): boolean;
+                emit(event: 'unhandledRejection', reason: unknown, promise: Promise<unknown>): boolean;
+                emit(event: 'warning', warning: Error): boolean;
+                emit(event: 'message', message: unknown, sendHandle: unknown): this;
+                emit(event: Signals, signal?: Signals): boolean;
+                emit(event: 'multipleResolves', type: MultipleResolveType, promise: Promise<unknown>, value: unknown): this;
+                emit(event: 'worker', listener: WorkerListener): this;
+                on(event: 'beforeExit', listener: BeforeExitListener): this;
+                on(event: 'disconnect', listener: DisconnectListener): this;
+                on(event: 'exit', listener: ExitListener): this;
+                on(event: 'rejectionHandled', listener: RejectionHandledListener): this;
+                on(event: 'uncaughtException', listener: UncaughtExceptionListener): this;
+                on(event: 'uncaughtExceptionMonitor', listener: UncaughtExceptionListener): this;
+                on(event: 'unhandledRejection', listener: UnhandledRejectionListener): this;
+                on(event: 'warning', listener: WarningListener): this;
+                on(event: 'message', listener: MessageListener): this;
+                on(event: Signals, listener: SignalsListener): this;
+                on(event: 'multipleResolves', listener: MultipleResolveListener): this;
+                on(event: 'worker', listener: WorkerListener): this;
+                on(event: string | symbol, listener: (...args: any[]) => void): this;
+                once(event: 'beforeExit', listener: BeforeExitListener): this;
+                once(event: 'disconnect', listener: DisconnectListener): this;
+                once(event: 'exit', listener: ExitListener): this;
+                once(event: 'rejectionHandled', listener: RejectionHandledListener): this;
+                once(event: 'uncaughtException', listener: UncaughtExceptionListener): this;
+                once(event: 'uncaughtExceptionMonitor', listener: UncaughtExceptionListener): this;
+                once(event: 'unhandledRejection', listener: UnhandledRejectionListener): this;
+                once(event: 'warning', listener: WarningListener): this;
+                once(event: 'message', listener: MessageListener): this;
+                once(event: Signals, listener: SignalsListener): this;
+                once(event: 'multipleResolves', listener: MultipleResolveListener): this;
+                once(event: 'worker', listener: WorkerListener): this;
+                once(event: string | symbol, listener: (...args: any[]) => void): this;
+                prependListener(event: 'beforeExit', listener: BeforeExitListener): this;
+                prependListener(event: 'disconnect', listener: DisconnectListener): this;
+                prependListener(event: 'exit', listener: ExitListener): this;
+                prependListener(event: 'rejectionHandled', listener: RejectionHandledListener): this;
+                prependListener(event: 'uncaughtException', listener: UncaughtExceptionListener): this;
+                prependListener(event: 'uncaughtExceptionMonitor', listener: UncaughtExceptionListener): this;
+                prependListener(event: 'unhandledRejection', listener: UnhandledRejectionListener): this;
+                prependListener(event: 'warning', listener: WarningListener): this;
+                prependListener(event: 'message', listener: MessageListener): this;
+                prependListener(event: Signals, listener: SignalsListener): this;
+                prependListener(event: 'multipleResolves', listener: MultipleResolveListener): this;
+                prependListener(event: 'worker', listener: WorkerListener): this;
+                prependOnceListener(event: 'beforeExit', listener: BeforeExitListener): this;
+                prependOnceListener(event: 'disconnect', listener: DisconnectListener): this;
+                prependOnceListener(event: 'exit', listener: ExitListener): this;
+                prependOnceListener(event: 'rejectionHandled', listener: RejectionHandledListener): this;
+                prependOnceListener(event: 'uncaughtException', listener: UncaughtExceptionListener): this;
+                prependOnceListener(event: 'uncaughtExceptionMonitor', listener: UncaughtExceptionListener): this;
+                prependOnceListener(event: 'unhandledRejection', listener: UnhandledRejectionListener): this;
+                prependOnceListener(event: 'warning', listener: WarningListener): this;
+                prependOnceListener(event: 'message', listener: MessageListener): this;
+                prependOnceListener(event: Signals, listener: SignalsListener): this;
+                prependOnceListener(event: 'multipleResolves', listener: MultipleResolveListener): this;
+                prependOnceListener(event: 'worker', listener: WorkerListener): this;
+                listeners(event: 'beforeExit'): BeforeExitListener[];
+                listeners(event: 'disconnect'): DisconnectListener[];
+                listeners(event: 'exit'): ExitListener[];
+                listeners(event: 'rejectionHandled'): RejectionHandledListener[];
+                listeners(event: 'uncaughtException'): UncaughtExceptionListener[];
+                listeners(event: 'uncaughtExceptionMonitor'): UncaughtExceptionListener[];
+                listeners(event: 'unhandledRejection'): UnhandledRejectionListener[];
+                listeners(event: 'warning'): WarningListener[];
+                listeners(event: 'message'): MessageListener[];
+                listeners(event: Signals): SignalsListener[];
+                listeners(event: 'multipleResolves'): MultipleResolveListener[];
+                listeners(event: 'worker'): WorkerListener[];
+            }
+        }
+    }
+    export = process;
+}
+declare module 'node:process' {
+    import process = require('process');
+    export = process;
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/punycode.d.ts b/igv_component/node_modules/@types/node/ts4.8/punycode.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..87ebbb90483aef0b987fb4c22d78031113fed576
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/punycode.d.ts
@@ -0,0 +1,117 @@
+/**
+ * **The version of the punycode module bundled in Node.js is being deprecated.**In a future major version of Node.js this module will be removed. Users
+ * currently depending on the `punycode` module should switch to using the
+ * userland-provided [Punycode.js](https://github.com/bestiejs/punycode.js) module instead. For punycode-based URL
+ * encoding, see `url.domainToASCII` or, more generally, the `WHATWG URL API`.
+ *
+ * The `punycode` module is a bundled version of the [Punycode.js](https://github.com/bestiejs/punycode.js) module. It
+ * can be accessed using:
+ *
+ * ```js
+ * const punycode = require('punycode');
+ * ```
+ *
+ * [Punycode](https://tools.ietf.org/html/rfc3492) is a character encoding scheme defined by RFC 3492 that is
+ * primarily intended for use in Internationalized Domain Names. Because host
+ * names in URLs are limited to ASCII characters only, Domain Names that contain
+ * non-ASCII characters must be converted into ASCII using the Punycode scheme.
+ * For instance, the Japanese character that translates into the English word,`'example'` is `'例'`. The Internationalized Domain Name, `'例.com'` (equivalent
+ * to `'example.com'`) is represented by Punycode as the ASCII string`'xn--fsq.com'`.
+ *
+ * The `punycode` module provides a simple implementation of the Punycode standard.
+ *
+ * The `punycode` module is a third-party dependency used by Node.js and
+ * made available to developers as a convenience. Fixes or other modifications to
+ * the module must be directed to the [Punycode.js](https://github.com/bestiejs/punycode.js) project.
+ * @deprecated Since v7.0.0 - Deprecated
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/punycode.js)
+ */
+declare module 'punycode' {
+    /**
+     * The `punycode.decode()` method converts a [Punycode](https://tools.ietf.org/html/rfc3492) string of ASCII-only
+     * characters to the equivalent string of Unicode codepoints.
+     *
+     * ```js
+     * punycode.decode('maana-pta'); // 'mañana'
+     * punycode.decode('--dqo34k'); // '☃-⌘'
+     * ```
+     * @since v0.5.1
+     */
+    function decode(string: string): string;
+    /**
+     * The `punycode.encode()` method converts a string of Unicode codepoints to a [Punycode](https://tools.ietf.org/html/rfc3492) string of ASCII-only characters.
+     *
+     * ```js
+     * punycode.encode('mañana'); // 'maana-pta'
+     * punycode.encode('☃-⌘'); // '--dqo34k'
+     * ```
+     * @since v0.5.1
+     */
+    function encode(string: string): string;
+    /**
+     * The `punycode.toUnicode()` method converts a string representing a domain name
+     * containing [Punycode](https://tools.ietf.org/html/rfc3492) encoded characters into Unicode. Only the [Punycode](https://tools.ietf.org/html/rfc3492) encoded parts of the domain name are be
+     * converted.
+     *
+     * ```js
+     * // decode domain names
+     * punycode.toUnicode('xn--maana-pta.com'); // 'mañana.com'
+     * punycode.toUnicode('xn----dqo34k.com');  // '☃-⌘.com'
+     * punycode.toUnicode('example.com');       // 'example.com'
+     * ```
+     * @since v0.6.1
+     */
+    function toUnicode(domain: string): string;
+    /**
+     * The `punycode.toASCII()` method converts a Unicode string representing an
+     * Internationalized Domain Name to [Punycode](https://tools.ietf.org/html/rfc3492). Only the non-ASCII parts of the
+     * domain name will be converted. Calling `punycode.toASCII()` on a string that
+     * already only contains ASCII characters will have no effect.
+     *
+     * ```js
+     * // encode domain names
+     * punycode.toASCII('mañana.com');  // 'xn--maana-pta.com'
+     * punycode.toASCII('☃-⌘.com');   // 'xn----dqo34k.com'
+     * punycode.toASCII('example.com'); // 'example.com'
+     * ```
+     * @since v0.6.1
+     */
+    function toASCII(domain: string): string;
+    /**
+     * @deprecated since v7.0.0
+     * The version of the punycode module bundled in Node.js is being deprecated.
+     * In a future major version of Node.js this module will be removed.
+     * Users currently depending on the punycode module should switch to using
+     * the userland-provided Punycode.js module instead.
+     */
+    const ucs2: ucs2;
+    interface ucs2 {
+        /**
+         * @deprecated since v7.0.0
+         * The version of the punycode module bundled in Node.js is being deprecated.
+         * In a future major version of Node.js this module will be removed.
+         * Users currently depending on the punycode module should switch to using
+         * the userland-provided Punycode.js module instead.
+         */
+        decode(string: string): number[];
+        /**
+         * @deprecated since v7.0.0
+         * The version of the punycode module bundled in Node.js is being deprecated.
+         * In a future major version of Node.js this module will be removed.
+         * Users currently depending on the punycode module should switch to using
+         * the userland-provided Punycode.js module instead.
+         */
+        encode(codePoints: ReadonlyArray<number>): string;
+    }
+    /**
+     * @deprecated since v7.0.0
+     * The version of the punycode module bundled in Node.js is being deprecated.
+     * In a future major version of Node.js this module will be removed.
+     * Users currently depending on the punycode module should switch to using
+     * the userland-provided Punycode.js module instead.
+     */
+    const version: string;
+}
+declare module 'node:punycode' {
+    export * from 'punycode';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/querystring.d.ts b/igv_component/node_modules/@types/node/ts4.8/querystring.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e694d8c849c68eeec93234e1faad051d22b21957
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/querystring.d.ts
@@ -0,0 +1,131 @@
+/**
+ * The `querystring` module provides utilities for parsing and formatting URL
+ * query strings. It can be accessed using:
+ *
+ * ```js
+ * const querystring = require('querystring');
+ * ```
+ *
+ * The `querystring` API is considered Legacy. While it is still maintained,
+ * new code should use the `URLSearchParams` API instead.
+ * @deprecated Legacy
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/querystring.js)
+ */
+declare module 'querystring' {
+    interface StringifyOptions {
+        encodeURIComponent?: ((str: string) => string) | undefined;
+    }
+    interface ParseOptions {
+        maxKeys?: number | undefined;
+        decodeURIComponent?: ((str: string) => string) | undefined;
+    }
+    interface ParsedUrlQuery extends NodeJS.Dict<string | string[]> {}
+    interface ParsedUrlQueryInput extends NodeJS.Dict<string | number | boolean | ReadonlyArray<string> | ReadonlyArray<number> | ReadonlyArray<boolean> | null> {}
+    /**
+     * The `querystring.stringify()` method produces a URL query string from a
+     * given `obj` by iterating through the object's "own properties".
+     *
+     * It serializes the following types of values passed in `obj`:[string](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) |
+     * [number](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type) |
+     * [bigint](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt) |
+     * [boolean](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type) |
+     * [string\[\]](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#String_type) |
+     * [number\[\]](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Number_type) |
+     * [bigint\[\]](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/BigInt) |
+     * [boolean\[\]](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Boolean_type) The numeric values must be finite. Any other input values will be coerced to
+     * empty strings.
+     *
+     * ```js
+     * querystring.stringify({ foo: 'bar', baz: ['qux', 'quux'], corge: '' });
+     * // Returns 'foo=bar&#x26;baz=qux&#x26;baz=quux&#x26;corge='
+     *
+     * querystring.stringify({ foo: 'bar', baz: 'qux' }, ';', ':');
+     * // Returns 'foo:bar;baz:qux'
+     * ```
+     *
+     * By default, characters requiring percent-encoding within the query string will
+     * be encoded as UTF-8\. If an alternative encoding is required, then an alternative`encodeURIComponent` option will need to be specified:
+     *
+     * ```js
+     * // Assuming gbkEncodeURIComponent function already exists,
+     *
+     * querystring.stringify({ w: '中文', foo: 'bar' }, null, null,
+     *                       { encodeURIComponent: gbkEncodeURIComponent });
+     * ```
+     * @since v0.1.25
+     * @param obj The object to serialize into a URL query string
+     * @param [sep='&'] The substring used to delimit key and value pairs in the query string.
+     * @param [eq='='] . The substring used to delimit keys and values in the query string.
+     */
+    function stringify(obj?: ParsedUrlQueryInput, sep?: string, eq?: string, options?: StringifyOptions): string;
+    /**
+     * The `querystring.parse()` method parses a URL query string (`str`) into a
+     * collection of key and value pairs.
+     *
+     * For example, the query string `'foo=bar&#x26;abc=xyz&#x26;abc=123'` is parsed into:
+     *
+     * ```js
+     * {
+     *   foo: 'bar',
+     *   abc: ['xyz', '123']
+     * }
+     * ```
+     *
+     * The object returned by the `querystring.parse()` method _does not_prototypically inherit from the JavaScript `Object`. This means that typical`Object` methods such as `obj.toString()`,
+     * `obj.hasOwnProperty()`, and others
+     * are not defined and _will not work_.
+     *
+     * By default, percent-encoded characters within the query string will be assumed
+     * to use UTF-8 encoding. If an alternative character encoding is used, then an
+     * alternative `decodeURIComponent` option will need to be specified:
+     *
+     * ```js
+     * // Assuming gbkDecodeURIComponent function already exists...
+     *
+     * querystring.parse('w=%D6%D0%CE%C4&#x26;foo=bar', null, null,
+     *                   { decodeURIComponent: gbkDecodeURIComponent });
+     * ```
+     * @since v0.1.25
+     * @param str The URL query string to parse
+     * @param [sep='&'] The substring used to delimit key and value pairs in the query string.
+     * @param [eq='='] . The substring used to delimit keys and values in the query string.
+     */
+    function parse(str: string, sep?: string, eq?: string, options?: ParseOptions): ParsedUrlQuery;
+    /**
+     * The querystring.encode() function is an alias for querystring.stringify().
+     */
+    const encode: typeof stringify;
+    /**
+     * The querystring.decode() function is an alias for querystring.parse().
+     */
+    const decode: typeof parse;
+    /**
+     * The `querystring.escape()` method performs URL percent-encoding on the given`str` in a manner that is optimized for the specific requirements of URL
+     * query strings.
+     *
+     * The `querystring.escape()` method is used by `querystring.stringify()` and is
+     * generally not expected to be used directly. It is exported primarily to allow
+     * application code to provide a replacement percent-encoding implementation if
+     * necessary by assigning `querystring.escape` to an alternative function.
+     * @since v0.1.25
+     */
+    function escape(str: string): string;
+    /**
+     * The `querystring.unescape()` method performs decoding of URL percent-encoded
+     * characters on the given `str`.
+     *
+     * The `querystring.unescape()` method is used by `querystring.parse()` and is
+     * generally not expected to be used directly. It is exported primarily to allow
+     * application code to provide a replacement decoding implementation if
+     * necessary by assigning `querystring.unescape` to an alternative function.
+     *
+     * By default, the `querystring.unescape()` method will attempt to use the
+     * JavaScript built-in `decodeURIComponent()` method to decode. If that fails,
+     * a safer equivalent that does not throw on malformed URLs will be used.
+     * @since v0.1.25
+     */
+    function unescape(str: string): string;
+}
+declare module 'node:querystring' {
+    export * from 'querystring';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/readline.d.ts b/igv_component/node_modules/@types/node/ts4.8/readline.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6ab64acbbec10680e4c519598e84b9c64bd97984
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/readline.d.ts
@@ -0,0 +1,653 @@
+/**
+ * The `readline` module provides an interface for reading data from a `Readable` stream (such as `process.stdin`) one line at a time.
+ *
+ * To use the promise-based APIs:
+ *
+ * ```js
+ * import * as readline from 'node:readline/promises';
+ * ```
+ *
+ * To use the callback and sync APIs:
+ *
+ * ```js
+ * import * as readline from 'node:readline';
+ * ```
+ *
+ * The following simple example illustrates the basic use of the `readline` module.
+ *
+ * ```js
+ * import * as readline from 'node:readline/promises';
+ * import { stdin as input, stdout as output } from 'node:process';
+ *
+ * const rl = readline.createInterface({ input, output });
+ *
+ * const answer = await rl.question('What do you think of Node.js? ');
+ *
+ * console.log(`Thank you for your valuable feedback: ${answer}`);
+ *
+ * rl.close();
+ * ```
+ *
+ * Once this code is invoked, the Node.js application will not terminate until the`readline.Interface` is closed because the interface waits for data to be
+ * received on the `input` stream.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/readline.js)
+ */
+declare module 'readline' {
+    import { Abortable, EventEmitter } from 'node:events';
+    import * as promises from 'node:readline/promises';
+
+    export { promises };
+    export interface Key {
+        sequence?: string | undefined;
+        name?: string | undefined;
+        ctrl?: boolean | undefined;
+        meta?: boolean | undefined;
+        shift?: boolean | undefined;
+    }
+    /**
+     * Instances of the `readline.Interface` class are constructed using the`readline.createInterface()` method. Every instance is associated with a
+     * single `input` `Readable` stream and a single `output` `Writable` stream.
+     * The `output` stream is used to print prompts for user input that arrives on,
+     * and is read from, the `input` stream.
+     * @since v0.1.104
+     */
+    export class Interface extends EventEmitter {
+        readonly terminal: boolean;
+        /**
+         * The current input data being processed by node.
+         *
+         * This can be used when collecting input from a TTY stream to retrieve the
+         * current value that has been processed thus far, prior to the `line` event
+         * being emitted. Once the `line` event has been emitted, this property will
+         * be an empty string.
+         *
+         * Be aware that modifying the value during the instance runtime may have
+         * unintended consequences if `rl.cursor` is not also controlled.
+         *
+         * **If not using a TTY stream for input, use the `'line'` event.**
+         *
+         * One possible use case would be as follows:
+         *
+         * ```js
+         * const values = ['lorem ipsum', 'dolor sit amet'];
+         * const rl = readline.createInterface(process.stdin);
+         * const showResults = debounce(() => {
+         *   console.log(
+         *     '\n',
+         *     values.filter((val) => val.startsWith(rl.line)).join(' ')
+         *   );
+         * }, 300);
+         * process.stdin.on('keypress', (c, k) => {
+         *   showResults();
+         * });
+         * ```
+         * @since v0.1.98
+         */
+        readonly line: string;
+        /**
+         * The cursor position relative to `rl.line`.
+         *
+         * This will track where the current cursor lands in the input string, when
+         * reading input from a TTY stream. The position of cursor determines the
+         * portion of the input string that will be modified as input is processed,
+         * as well as the column where the terminal caret will be rendered.
+         * @since v0.1.98
+         */
+        readonly cursor: number;
+        /**
+         * NOTE: According to the documentation:
+         *
+         * > Instances of the `readline.Interface` class are constructed using the
+         * > `readline.createInterface()` method.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/readline.html#readline_class_interface
+         */
+        protected constructor(input: NodeJS.ReadableStream, output?: NodeJS.WritableStream, completer?: Completer | AsyncCompleter, terminal?: boolean);
+        /**
+         * NOTE: According to the documentation:
+         *
+         * > Instances of the `readline.Interface` class are constructed using the
+         * > `readline.createInterface()` method.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/readline.html#readline_class_interface
+         */
+        protected constructor(options: ReadLineOptions);
+        /**
+         * The `rl.getPrompt()` method returns the current prompt used by `rl.prompt()`.
+         * @since v15.3.0
+         * @return the current prompt string
+         */
+        getPrompt(): string;
+        /**
+         * The `rl.setPrompt()` method sets the prompt that will be written to `output`whenever `rl.prompt()` is called.
+         * @since v0.1.98
+         */
+        setPrompt(prompt: string): void;
+        /**
+         * The `rl.prompt()` method writes the `readline.Interface` instances configured`prompt` to a new line in `output` in order to provide a user with a new
+         * location at which to provide input.
+         *
+         * When called, `rl.prompt()` will resume the `input` stream if it has been
+         * paused.
+         *
+         * If the `readline.Interface` was created with `output` set to `null` or`undefined` the prompt is not written.
+         * @since v0.1.98
+         * @param preserveCursor If `true`, prevents the cursor placement from being reset to `0`.
+         */
+        prompt(preserveCursor?: boolean): void;
+        /**
+         * The `rl.question()` method displays the `query` by writing it to the `output`,
+         * waits for user input to be provided on `input`, then invokes the `callback`function passing the provided input as the first argument.
+         *
+         * When called, `rl.question()` will resume the `input` stream if it has been
+         * paused.
+         *
+         * If the `readline.Interface` was created with `output` set to `null` or`undefined` the `query` is not written.
+         *
+         * The `callback` function passed to `rl.question()` does not follow the typical
+         * pattern of accepting an `Error` object or `null` as the first argument.
+         * The `callback` is called with the provided answer as the only argument.
+         *
+         * Example usage:
+         *
+         * ```js
+         * rl.question('What is your favorite food? ', (answer) => {
+         *   console.log(`Oh, so your favorite food is ${answer}`);
+         * });
+         * ```
+         *
+         * Using an `AbortController` to cancel a question.
+         *
+         * ```js
+         * const ac = new AbortController();
+         * const signal = ac.signal;
+         *
+         * rl.question('What is your favorite food? ', { signal }, (answer) => {
+         *   console.log(`Oh, so your favorite food is ${answer}`);
+         * });
+         *
+         * signal.addEventListener('abort', () => {
+         *   console.log('The food question timed out');
+         * }, { once: true });
+         *
+         * setTimeout(() => ac.abort(), 10000);
+         * ```
+         *
+         * If this method is invoked as it's util.promisify()ed version, it returns a
+         * Promise that fulfills with the answer. If the question is canceled using
+         * an `AbortController` it will reject with an `AbortError`.
+         *
+         * ```js
+         * const util = require('util');
+         * const question = util.promisify(rl.question).bind(rl);
+         *
+         * async function questionExample() {
+         *   try {
+         *     const answer = await question('What is you favorite food? ');
+         *     console.log(`Oh, so your favorite food is ${answer}`);
+         *   } catch (err) {
+         *     console.error('Question rejected', err);
+         *   }
+         * }
+         * questionExample();
+         * ```
+         * @since v0.3.3
+         * @param query A statement or query to write to `output`, prepended to the prompt.
+         * @param callback A callback function that is invoked with the user's input in response to the `query`.
+         */
+        question(query: string, callback: (answer: string) => void): void;
+        question(query: string, options: Abortable, callback: (answer: string) => void): void;
+        /**
+         * The `rl.pause()` method pauses the `input` stream, allowing it to be resumed
+         * later if necessary.
+         *
+         * Calling `rl.pause()` does not immediately pause other events (including`'line'`) from being emitted by the `readline.Interface` instance.
+         * @since v0.3.4
+         */
+        pause(): this;
+        /**
+         * The `rl.resume()` method resumes the `input` stream if it has been paused.
+         * @since v0.3.4
+         */
+        resume(): this;
+        /**
+         * The `rl.close()` method closes the `readline.Interface` instance and
+         * relinquishes control over the `input` and `output` streams. When called,
+         * the `'close'` event will be emitted.
+         *
+         * Calling `rl.close()` does not immediately stop other events (including `'line'`)
+         * from being emitted by the `readline.Interface` instance.
+         * @since v0.1.98
+         */
+        close(): void;
+        /**
+         * The `rl.write()` method will write either `data` or a key sequence identified
+         * by `key` to the `output`. The `key` argument is supported only if `output` is
+         * a `TTY` text terminal. See `TTY keybindings` for a list of key
+         * combinations.
+         *
+         * If `key` is specified, `data` is ignored.
+         *
+         * When called, `rl.write()` will resume the `input` stream if it has been
+         * paused.
+         *
+         * If the `readline.Interface` was created with `output` set to `null` or`undefined` the `data` and `key` are not written.
+         *
+         * ```js
+         * rl.write('Delete this!');
+         * // Simulate Ctrl+U to delete the line written previously
+         * rl.write(null, { ctrl: true, name: 'u' });
+         * ```
+         *
+         * The `rl.write()` method will write the data to the `readline` `Interface`'s`input`_as if it were provided by the user_.
+         * @since v0.1.98
+         */
+        write(data: string | Buffer, key?: Key): void;
+        write(data: undefined | null | string | Buffer, key: Key): void;
+        /**
+         * Returns the real position of the cursor in relation to the input
+         * prompt + string. Long input (wrapping) strings, as well as multiple
+         * line prompts are included in the calculations.
+         * @since v13.5.0, v12.16.0
+         */
+        getCursorPos(): CursorPos;
+        /**
+         * events.EventEmitter
+         * 1. close
+         * 2. line
+         * 3. pause
+         * 4. resume
+         * 5. SIGCONT
+         * 6. SIGINT
+         * 7. SIGTSTP
+         * 8. history
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'line', listener: (input: string) => void): this;
+        addListener(event: 'pause', listener: () => void): this;
+        addListener(event: 'resume', listener: () => void): this;
+        addListener(event: 'SIGCONT', listener: () => void): this;
+        addListener(event: 'SIGINT', listener: () => void): this;
+        addListener(event: 'SIGTSTP', listener: () => void): this;
+        addListener(event: 'history', listener: (history: string[]) => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'line', input: string): boolean;
+        emit(event: 'pause'): boolean;
+        emit(event: 'resume'): boolean;
+        emit(event: 'SIGCONT'): boolean;
+        emit(event: 'SIGINT'): boolean;
+        emit(event: 'SIGTSTP'): boolean;
+        emit(event: 'history', history: string[]): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'line', listener: (input: string) => void): this;
+        on(event: 'pause', listener: () => void): this;
+        on(event: 'resume', listener: () => void): this;
+        on(event: 'SIGCONT', listener: () => void): this;
+        on(event: 'SIGINT', listener: () => void): this;
+        on(event: 'SIGTSTP', listener: () => void): this;
+        on(event: 'history', listener: (history: string[]) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'line', listener: (input: string) => void): this;
+        once(event: 'pause', listener: () => void): this;
+        once(event: 'resume', listener: () => void): this;
+        once(event: 'SIGCONT', listener: () => void): this;
+        once(event: 'SIGINT', listener: () => void): this;
+        once(event: 'SIGTSTP', listener: () => void): this;
+        once(event: 'history', listener: (history: string[]) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'line', listener: (input: string) => void): this;
+        prependListener(event: 'pause', listener: () => void): this;
+        prependListener(event: 'resume', listener: () => void): this;
+        prependListener(event: 'SIGCONT', listener: () => void): this;
+        prependListener(event: 'SIGINT', listener: () => void): this;
+        prependListener(event: 'SIGTSTP', listener: () => void): this;
+        prependListener(event: 'history', listener: (history: string[]) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'line', listener: (input: string) => void): this;
+        prependOnceListener(event: 'pause', listener: () => void): this;
+        prependOnceListener(event: 'resume', listener: () => void): this;
+        prependOnceListener(event: 'SIGCONT', listener: () => void): this;
+        prependOnceListener(event: 'SIGINT', listener: () => void): this;
+        prependOnceListener(event: 'SIGTSTP', listener: () => void): this;
+        prependOnceListener(event: 'history', listener: (history: string[]) => void): this;
+        [Symbol.asyncIterator](): AsyncIterableIterator<string>;
+    }
+    export type ReadLine = Interface; // type forwarded for backwards compatibility
+    export type Completer = (line: string) => CompleterResult;
+    export type AsyncCompleter = (line: string, callback: (err?: null | Error, result?: CompleterResult) => void) => void;
+    export type CompleterResult = [string[], string];
+    export interface ReadLineOptions {
+        input: NodeJS.ReadableStream;
+        output?: NodeJS.WritableStream | undefined;
+        completer?: Completer | AsyncCompleter | undefined;
+        terminal?: boolean | undefined;
+        /**
+         *  Initial list of history lines. This option makes sense
+         * only if `terminal` is set to `true` by the user or by an internal `output`
+         * check, otherwise the history caching mechanism is not initialized at all.
+         * @default []
+         */
+        history?: string[] | undefined;
+        historySize?: number | undefined;
+        prompt?: string | undefined;
+        crlfDelay?: number | undefined;
+        /**
+         * If `true`, when a new input line added
+         * to the history list duplicates an older one, this removes the older line
+         * from the list.
+         * @default false
+         */
+        removeHistoryDuplicates?: boolean | undefined;
+        escapeCodeTimeout?: number | undefined;
+        tabSize?: number | undefined;
+    }
+    /**
+     * The `readline.createInterface()` method creates a new `readline.Interface`instance.
+     *
+     * ```js
+     * const readline = require('readline');
+     * const rl = readline.createInterface({
+     *   input: process.stdin,
+     *   output: process.stdout
+     * });
+     * ```
+     *
+     * Once the `readline.Interface` instance is created, the most common case is to
+     * listen for the `'line'` event:
+     *
+     * ```js
+     * rl.on('line', (line) => {
+     *   console.log(`Received: ${line}`);
+     * });
+     * ```
+     *
+     * If `terminal` is `true` for this instance then the `output` stream will get
+     * the best compatibility if it defines an `output.columns` property and emits
+     * a `'resize'` event on the `output` if or when the columns ever change
+     * (`process.stdout` does this automatically when it is a TTY).
+     *
+     * When creating a `readline.Interface` using `stdin` as input, the program
+     * will not terminate until it receives `EOF` (Ctrl+D on
+     * Linux/macOS, Ctrl+Z followed by Return on
+     * Windows).
+     * If you want your application to exit without waiting for user input, you can `unref()` the standard input stream:
+     *
+     * ```js
+     * process.stdin.unref();
+     * ```
+     * @since v0.1.98
+     */
+    export function createInterface(input: NodeJS.ReadableStream, output?: NodeJS.WritableStream, completer?: Completer | AsyncCompleter, terminal?: boolean): Interface;
+    export function createInterface(options: ReadLineOptions): Interface;
+    /**
+     * The `readline.emitKeypressEvents()` method causes the given `Readable` stream to begin emitting `'keypress'` events corresponding to received input.
+     *
+     * Optionally, `interface` specifies a `readline.Interface` instance for which
+     * autocompletion is disabled when copy-pasted input is detected.
+     *
+     * If the `stream` is a `TTY`, then it must be in raw mode.
+     *
+     * This is automatically called by any readline instance on its `input` if the`input` is a terminal. Closing the `readline` instance does not stop
+     * the `input` from emitting `'keypress'` events.
+     *
+     * ```js
+     * readline.emitKeypressEvents(process.stdin);
+     * if (process.stdin.isTTY)
+     *   process.stdin.setRawMode(true);
+     * ```
+     *
+     * ## Example: Tiny CLI
+     *
+     * The following example illustrates the use of `readline.Interface` class to
+     * implement a small command-line interface:
+     *
+     * ```js
+     * const readline = require('readline');
+     * const rl = readline.createInterface({
+     *   input: process.stdin,
+     *   output: process.stdout,
+     *   prompt: 'OHAI> '
+     * });
+     *
+     * rl.prompt();
+     *
+     * rl.on('line', (line) => {
+     *   switch (line.trim()) {
+     *     case 'hello':
+     *       console.log('world!');
+     *       break;
+     *     default:
+     *       console.log(`Say what? I might have heard '${line.trim()}'`);
+     *       break;
+     *   }
+     *   rl.prompt();
+     * }).on('close', () => {
+     *   console.log('Have a great day!');
+     *   process.exit(0);
+     * });
+     * ```
+     *
+     * ## Example: Read file stream line-by-Line
+     *
+     * A common use case for `readline` is to consume an input file one line at a
+     * time. The easiest way to do so is leveraging the `fs.ReadStream` API as
+     * well as a `for await...of` loop:
+     *
+     * ```js
+     * const fs = require('fs');
+     * const readline = require('readline');
+     *
+     * async function processLineByLine() {
+     *   const fileStream = fs.createReadStream('input.txt');
+     *
+     *   const rl = readline.createInterface({
+     *     input: fileStream,
+     *     crlfDelay: Infinity
+     *   });
+     *   // Note: we use the crlfDelay option to recognize all instances of CR LF
+     *   // ('\r\n') in input.txt as a single line break.
+     *
+     *   for await (const line of rl) {
+     *     // Each line in input.txt will be successively available here as `line`.
+     *     console.log(`Line from file: ${line}`);
+     *   }
+     * }
+     *
+     * processLineByLine();
+     * ```
+     *
+     * Alternatively, one could use the `'line'` event:
+     *
+     * ```js
+     * const fs = require('fs');
+     * const readline = require('readline');
+     *
+     * const rl = readline.createInterface({
+     *   input: fs.createReadStream('sample.txt'),
+     *   crlfDelay: Infinity
+     * });
+     *
+     * rl.on('line', (line) => {
+     *   console.log(`Line from file: ${line}`);
+     * });
+     * ```
+     *
+     * Currently, `for await...of` loop can be a bit slower. If `async` / `await`flow and speed are both essential, a mixed approach can be applied:
+     *
+     * ```js
+     * const { once } = require('events');
+     * const { createReadStream } = require('fs');
+     * const { createInterface } = require('readline');
+     *
+     * (async function processLineByLine() {
+     *   try {
+     *     const rl = createInterface({
+     *       input: createReadStream('big-file.txt'),
+     *       crlfDelay: Infinity
+     *     });
+     *
+     *     rl.on('line', (line) => {
+     *       // Process the line.
+     *     });
+     *
+     *     await once(rl, 'close');
+     *
+     *     console.log('File processed.');
+     *   } catch (err) {
+     *     console.error(err);
+     *   }
+     * })();
+     * ```
+     * @since v0.7.7
+     */
+    export function emitKeypressEvents(stream: NodeJS.ReadableStream, readlineInterface?: Interface): void;
+    export type Direction = -1 | 0 | 1;
+    export interface CursorPos {
+        rows: number;
+        cols: number;
+    }
+    /**
+     * The `readline.clearLine()` method clears current line of given `TTY` stream
+     * in a specified direction identified by `dir`.
+     * @since v0.7.7
+     * @param callback Invoked once the operation completes.
+     * @return `false` if `stream` wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+     */
+    export function clearLine(stream: NodeJS.WritableStream, dir: Direction, callback?: () => void): boolean;
+    /**
+     * The `readline.clearScreenDown()` method clears the given `TTY` stream from
+     * the current position of the cursor down.
+     * @since v0.7.7
+     * @param callback Invoked once the operation completes.
+     * @return `false` if `stream` wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+     */
+    export function clearScreenDown(stream: NodeJS.WritableStream, callback?: () => void): boolean;
+    /**
+     * The `readline.cursorTo()` method moves cursor to the specified position in a
+     * given `TTY` `stream`.
+     * @since v0.7.7
+     * @param callback Invoked once the operation completes.
+     * @return `false` if `stream` wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+     */
+    export function cursorTo(stream: NodeJS.WritableStream, x: number, y?: number, callback?: () => void): boolean;
+    /**
+     * The `readline.moveCursor()` method moves the cursor _relative_ to its current
+     * position in a given `TTY` `stream`.
+     *
+     * ## Example: Tiny CLI
+     *
+     * The following example illustrates the use of `readline.Interface` class to
+     * implement a small command-line interface:
+     *
+     * ```js
+     * const readline = require('readline');
+     * const rl = readline.createInterface({
+     *   input: process.stdin,
+     *   output: process.stdout,
+     *   prompt: 'OHAI> '
+     * });
+     *
+     * rl.prompt();
+     *
+     * rl.on('line', (line) => {
+     *   switch (line.trim()) {
+     *     case 'hello':
+     *       console.log('world!');
+     *       break;
+     *     default:
+     *       console.log(`Say what? I might have heard '${line.trim()}'`);
+     *       break;
+     *   }
+     *   rl.prompt();
+     * }).on('close', () => {
+     *   console.log('Have a great day!');
+     *   process.exit(0);
+     * });
+     * ```
+     *
+     * ## Example: Read file stream line-by-Line
+     *
+     * A common use case for `readline` is to consume an input file one line at a
+     * time. The easiest way to do so is leveraging the `fs.ReadStream` API as
+     * well as a `for await...of` loop:
+     *
+     * ```js
+     * const fs = require('fs');
+     * const readline = require('readline');
+     *
+     * async function processLineByLine() {
+     *   const fileStream = fs.createReadStream('input.txt');
+     *
+     *   const rl = readline.createInterface({
+     *     input: fileStream,
+     *     crlfDelay: Infinity
+     *   });
+     *   // Note: we use the crlfDelay option to recognize all instances of CR LF
+     *   // ('\r\n') in input.txt as a single line break.
+     *
+     *   for await (const line of rl) {
+     *     // Each line in input.txt will be successively available here as `line`.
+     *     console.log(`Line from file: ${line}`);
+     *   }
+     * }
+     *
+     * processLineByLine();
+     * ```
+     *
+     * Alternatively, one could use the `'line'` event:
+     *
+     * ```js
+     * const fs = require('fs');
+     * const readline = require('readline');
+     *
+     * const rl = readline.createInterface({
+     *   input: fs.createReadStream('sample.txt'),
+     *   crlfDelay: Infinity
+     * });
+     *
+     * rl.on('line', (line) => {
+     *   console.log(`Line from file: ${line}`);
+     * });
+     * ```
+     *
+     * Currently, `for await...of` loop can be a bit slower. If `async` / `await`flow and speed are both essential, a mixed approach can be applied:
+     *
+     * ```js
+     * const { once } = require('events');
+     * const { createReadStream } = require('fs');
+     * const { createInterface } = require('readline');
+     *
+     * (async function processLineByLine() {
+     *   try {
+     *     const rl = createInterface({
+     *       input: createReadStream('big-file.txt'),
+     *       crlfDelay: Infinity
+     *     });
+     *
+     *     rl.on('line', (line) => {
+     *       // Process the line.
+     *     });
+     *
+     *     await once(rl, 'close');
+     *
+     *     console.log('File processed.');
+     *   } catch (err) {
+     *     console.error(err);
+     *   }
+     * })();
+     * ```
+     * @since v0.7.7
+     * @param callback Invoked once the operation completes.
+     * @return `false` if `stream` wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+     */
+    export function moveCursor(stream: NodeJS.WritableStream, dx: number, dy: number, callback?: () => void): boolean;
+}
+declare module 'node:readline' {
+    export * from 'readline';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/readline/promises.d.ts b/igv_component/node_modules/@types/node/ts4.8/readline/promises.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..8f9f06f0b964ee8d214d670dfde9006fd8a18a30
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/readline/promises.d.ts
@@ -0,0 +1,143 @@
+/**
+ * The `readline/promise` module provides an API for reading lines of input from a Readable stream one line at a time.
+ *
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/readline/promises.js)
+ * @since v17.0.0
+ */
+declare module 'readline/promises' {
+    import { Interface as _Interface, ReadLineOptions, Completer, AsyncCompleter, Direction } from 'node:readline';
+    import { Abortable } from 'node:events';
+
+    class Interface extends _Interface {
+        /**
+         * The rl.question() method displays the query by writing it to the output, waits for user input to be provided on input,
+         * then invokes the callback function passing the provided input as the first argument.
+         *
+         * When called, rl.question() will resume the input stream if it has been paused.
+         *
+         * If the readlinePromises.Interface was created with output set to null or undefined the query is not written.
+         *
+         * If the question is called after rl.close(), it returns a rejected promise.
+         *
+         * Example usage:
+         *
+         * ```js
+         * const answer = await rl.question('What is your favorite food? ');
+         * console.log(`Oh, so your favorite food is ${answer}`);
+         * ```
+         *
+         * Using an AbortSignal to cancel a question.
+         *
+         * ```js
+         * const signal = AbortSignal.timeout(10_000);
+         *
+         * signal.addEventListener('abort', () => {
+         *   console.log('The food question timed out');
+         * }, { once: true });
+         *
+         * const answer = await rl.question('What is your favorite food? ', { signal });
+         * console.log(`Oh, so your favorite food is ${answer}`);
+         * ```
+         *
+         * @since v17.0.0
+         * @param query A statement or query to write to output, prepended to the prompt.
+         */
+        question(query: string): Promise<string>;
+        question(query: string, options: Abortable): Promise<string>;
+    }
+
+    class Readline {
+        /**
+         * @param stream A TTY stream.
+         */
+        constructor(stream: NodeJS.WritableStream, options?: { autoCommit?: boolean });
+        /**
+         * The `rl.clearLine()` method adds to the internal list of pending action an action that clears current line of the associated `stream` in a specified direction identified by `dir`.
+         * Call `rl.commit()` to see the effect of this method, unless `autoCommit: true` was passed to the constructor.
+         */
+        clearLine(dir: Direction): this;
+        /**
+         * The `rl.clearScreenDown()` method adds to the internal list of pending action an action that clears the associated `stream` from the current position of the cursor down.
+         * Call `rl.commit()` to see the effect of this method, unless `autoCommit: true` was passed to the constructor.
+         */
+        clearScreenDown(): this;
+        /**
+         * The `rl.commit()` method sends all the pending actions to the associated `stream` and clears the internal list of pending actions.
+         */
+        commit(): Promise<void>;
+        /**
+         * The `rl.cursorTo()` method adds to the internal list of pending action an action that moves cursor to the specified position in the associated `stream`.
+         * Call `rl.commit()` to see the effect of this method, unless `autoCommit: true` was passed to the constructor.
+         */
+        cursorTo(x: number, y?: number): this;
+        /**
+         * The `rl.moveCursor()` method adds to the internal list of pending action an action that moves the cursor relative to its current position in the associated `stream`.
+         * Call `rl.commit()` to see the effect of this method, unless autoCommit: true was passed to the constructor.
+         */
+        moveCursor(dx: number, dy: number): this;
+        /**
+         * The `rl.rollback()` method clears the internal list of pending actions without sending it to the associated `stream`.
+         */
+        rollback(): this;
+    }
+
+    /**
+     * The `readlinePromises.createInterface()` method creates a new `readlinePromises.Interface` instance.
+     *
+     * ```js
+     * const readlinePromises = require('node:readline/promises');
+     * const rl = readlinePromises.createInterface({
+     *   input: process.stdin,
+     *   output: process.stdout
+     * });
+     * ```
+     *
+     * Once the `readlinePromises.Interface` instance is created, the most common case is to listen for the `'line'` event:
+     *
+     * ```js
+     * rl.on('line', (line) => {
+     *   console.log(`Received: ${line}`);
+     * });
+     * ```
+     *
+     * If `terminal` is `true` for this instance then the `output` stream will get the best compatibility if it defines an `output.columns` property,
+     * and emits a `'resize'` event on the `output`, if or when the columns ever change (`process.stdout` does this automatically when it is a TTY).
+     *
+     * ## Use of the `completer` function
+     *
+     * The `completer` function takes the current line entered by the user as an argument, and returns an `Array` with 2 entries:
+     *
+     * - An Array with matching entries for the completion.
+     * - The substring that was used for the matching.
+     *
+     * For instance: `[[substr1, substr2, ...], originalsubstring]`.
+     *
+     * ```js
+     * function completer(line) {
+     *   const completions = '.help .error .exit .quit .q'.split(' ');
+     *   const hits = completions.filter((c) => c.startsWith(line));
+     *   // Show all completions if none found
+     *   return [hits.length ? hits : completions, line];
+     * }
+     * ```
+     *
+     * The `completer` function can also returns a `Promise`, or be asynchronous:
+     *
+     * ```js
+     * async function completer(linePartial) {
+     *   await someAsyncWork();
+     *   return [['123'], linePartial];
+     * }
+     * ```
+     */
+    function createInterface(
+        input: NodeJS.ReadableStream,
+        output?: NodeJS.WritableStream,
+        completer?: Completer | AsyncCompleter,
+        terminal?: boolean,
+    ): Interface;
+    function createInterface(options: ReadLineOptions): Interface;
+}
+declare module 'node:readline/promises' {
+    export * from 'readline/promises';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/repl.d.ts b/igv_component/node_modules/@types/node/ts4.8/repl.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..be42ccc4aebe3cb864d811ddece32c2d49dbe63c
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/repl.d.ts
@@ -0,0 +1,424 @@
+/**
+ * The `repl` module provides a Read-Eval-Print-Loop (REPL) implementation that
+ * is available both as a standalone program or includible in other applications.
+ * It can be accessed using:
+ *
+ * ```js
+ * const repl = require('repl');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/repl.js)
+ */
+declare module 'repl' {
+    import { Interface, Completer, AsyncCompleter } from 'node:readline';
+    import { Context } from 'node:vm';
+    import { InspectOptions } from 'node:util';
+    interface ReplOptions {
+        /**
+         * The input prompt to display.
+         * @default "> "
+         */
+        prompt?: string | undefined;
+        /**
+         * The `Readable` stream from which REPL input will be read.
+         * @default process.stdin
+         */
+        input?: NodeJS.ReadableStream | undefined;
+        /**
+         * The `Writable` stream to which REPL output will be written.
+         * @default process.stdout
+         */
+        output?: NodeJS.WritableStream | undefined;
+        /**
+         * If `true`, specifies that the output should be treated as a TTY terminal, and have
+         * ANSI/VT100 escape codes written to it.
+         * Default: checking the value of the `isTTY` property on the output stream upon
+         * instantiation.
+         */
+        terminal?: boolean | undefined;
+        /**
+         * The function to be used when evaluating each given line of input.
+         * Default: an async wrapper for the JavaScript `eval()` function. An `eval` function can
+         * error with `repl.Recoverable` to indicate the input was incomplete and prompt for
+         * additional lines.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_default_evaluation
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_custom_evaluation_functions
+         */
+        eval?: REPLEval | undefined;
+        /**
+         * Defines if the repl prints output previews or not.
+         * @default `true` Always `false` in case `terminal` is falsy.
+         */
+        preview?: boolean | undefined;
+        /**
+         * If `true`, specifies that the default `writer` function should include ANSI color
+         * styling to REPL output. If a custom `writer` function is provided then this has no
+         * effect.
+         * Default: the REPL instance's `terminal` value.
+         */
+        useColors?: boolean | undefined;
+        /**
+         * If `true`, specifies that the default evaluation function will use the JavaScript
+         * `global` as the context as opposed to creating a new separate context for the REPL
+         * instance. The node CLI REPL sets this value to `true`.
+         * Default: `false`.
+         */
+        useGlobal?: boolean | undefined;
+        /**
+         * If `true`, specifies that the default writer will not output the return value of a
+         * command if it evaluates to `undefined`.
+         * Default: `false`.
+         */
+        ignoreUndefined?: boolean | undefined;
+        /**
+         * The function to invoke to format the output of each command before writing to `output`.
+         * Default: a wrapper for `util.inspect`.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_customizing_repl_output
+         */
+        writer?: REPLWriter | undefined;
+        /**
+         * An optional function used for custom Tab auto completion.
+         *
+         * @see https://nodejs.org/dist/latest-v11.x/docs/api/readline.html#readline_use_of_the_completer_function
+         */
+        completer?: Completer | AsyncCompleter | undefined;
+        /**
+         * A flag that specifies whether the default evaluator executes all JavaScript commands in
+         * strict mode or default (sloppy) mode.
+         * Accepted values are:
+         * - `repl.REPL_MODE_SLOPPY` - evaluates expressions in sloppy mode.
+         * - `repl.REPL_MODE_STRICT` - evaluates expressions in strict mode. This is equivalent to
+         *   prefacing every repl statement with `'use strict'`.
+         */
+        replMode?: typeof REPL_MODE_SLOPPY | typeof REPL_MODE_STRICT | undefined;
+        /**
+         * Stop evaluating the current piece of code when `SIGINT` is received, i.e. `Ctrl+C` is
+         * pressed. This cannot be used together with a custom `eval` function.
+         * Default: `false`.
+         */
+        breakEvalOnSigint?: boolean | undefined;
+    }
+    type REPLEval = (this: REPLServer, evalCmd: string, context: Context, file: string, cb: (err: Error | null, result: any) => void) => void;
+    type REPLWriter = (this: REPLServer, obj: any) => string;
+    /**
+     * This is the default "writer" value, if none is passed in the REPL options,
+     * and it can be overridden by custom print functions.
+     */
+    const writer: REPLWriter & {
+        options: InspectOptions;
+    };
+    type REPLCommandAction = (this: REPLServer, text: string) => void;
+    interface REPLCommand {
+        /**
+         * Help text to be displayed when `.help` is entered.
+         */
+        help?: string | undefined;
+        /**
+         * The function to execute, optionally accepting a single string argument.
+         */
+        action: REPLCommandAction;
+    }
+    /**
+     * Instances of `repl.REPLServer` are created using the {@link start} method
+     * or directly using the JavaScript `new` keyword.
+     *
+     * ```js
+     * const repl = require('repl');
+     *
+     * const options = { useColors: true };
+     *
+     * const firstInstance = repl.start(options);
+     * const secondInstance = new repl.REPLServer(options);
+     * ```
+     * @since v0.1.91
+     */
+    class REPLServer extends Interface {
+        /**
+         * The `vm.Context` provided to the `eval` function to be used for JavaScript
+         * evaluation.
+         */
+        readonly context: Context;
+        /**
+         * @deprecated since v14.3.0 - Use `input` instead.
+         */
+        readonly inputStream: NodeJS.ReadableStream;
+        /**
+         * @deprecated since v14.3.0 - Use `output` instead.
+         */
+        readonly outputStream: NodeJS.WritableStream;
+        /**
+         * The `Readable` stream from which REPL input will be read.
+         */
+        readonly input: NodeJS.ReadableStream;
+        /**
+         * The `Writable` stream to which REPL output will be written.
+         */
+        readonly output: NodeJS.WritableStream;
+        /**
+         * The commands registered via `replServer.defineCommand()`.
+         */
+        readonly commands: NodeJS.ReadOnlyDict<REPLCommand>;
+        /**
+         * A value indicating whether the REPL is currently in "editor mode".
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_commands_and_special_keys
+         */
+        readonly editorMode: boolean;
+        /**
+         * A value indicating whether the `_` variable has been assigned.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
+         */
+        readonly underscoreAssigned: boolean;
+        /**
+         * The last evaluation result from the REPL (assigned to the `_` variable inside of the REPL).
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
+         */
+        readonly last: any;
+        /**
+         * A value indicating whether the `_error` variable has been assigned.
+         *
+         * @since v9.8.0
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
+         */
+        readonly underscoreErrAssigned: boolean;
+        /**
+         * The last error raised inside the REPL (assigned to the `_error` variable inside of the REPL).
+         *
+         * @since v9.8.0
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_assignment_of_the_underscore_variable
+         */
+        readonly lastError: any;
+        /**
+         * Specified in the REPL options, this is the function to be used when evaluating each
+         * given line of input. If not specified in the REPL options, this is an async wrapper
+         * for the JavaScript `eval()` function.
+         */
+        readonly eval: REPLEval;
+        /**
+         * Specified in the REPL options, this is a value indicating whether the default
+         * `writer` function should include ANSI color styling to REPL output.
+         */
+        readonly useColors: boolean;
+        /**
+         * Specified in the REPL options, this is a value indicating whether the default `eval`
+         * function will use the JavaScript `global` as the context as opposed to creating a new
+         * separate context for the REPL instance.
+         */
+        readonly useGlobal: boolean;
+        /**
+         * Specified in the REPL options, this is a value indicating whether the default `writer`
+         * function should output the result of a command if it evaluates to `undefined`.
+         */
+        readonly ignoreUndefined: boolean;
+        /**
+         * Specified in the REPL options, this is the function to invoke to format the output of
+         * each command before writing to `outputStream`. If not specified in the REPL options,
+         * this will be a wrapper for `util.inspect`.
+         */
+        readonly writer: REPLWriter;
+        /**
+         * Specified in the REPL options, this is the function to use for custom Tab auto-completion.
+         */
+        readonly completer: Completer | AsyncCompleter;
+        /**
+         * Specified in the REPL options, this is a flag that specifies whether the default `eval`
+         * function should execute all JavaScript commands in strict mode or default (sloppy) mode.
+         * Possible values are:
+         * - `repl.REPL_MODE_SLOPPY` - evaluates expressions in sloppy mode.
+         * - `repl.REPL_MODE_STRICT` - evaluates expressions in strict mode. This is equivalent to
+         *    prefacing every repl statement with `'use strict'`.
+         */
+        readonly replMode: typeof REPL_MODE_SLOPPY | typeof REPL_MODE_STRICT;
+        /**
+         * NOTE: According to the documentation:
+         *
+         * > Instances of `repl.REPLServer` are created using the `repl.start()` method and
+         * > _should not_ be created directly using the JavaScript `new` keyword.
+         *
+         * `REPLServer` cannot be subclassed due to implementation specifics in NodeJS.
+         *
+         * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_class_replserver
+         */
+        private constructor();
+        /**
+         * The `replServer.defineCommand()` method is used to add new `.`\-prefixed commands
+         * to the REPL instance. Such commands are invoked by typing a `.` followed by the`keyword`. The `cmd` is either a `Function` or an `Object` with the following
+         * properties:
+         *
+         * The following example shows two new commands added to the REPL instance:
+         *
+         * ```js
+         * const repl = require('repl');
+         *
+         * const replServer = repl.start({ prompt: '> ' });
+         * replServer.defineCommand('sayhello', {
+         *   help: 'Say hello',
+         *   action(name) {
+         *     this.clearBufferedCommand();
+         *     console.log(`Hello, ${name}!`);
+         *     this.displayPrompt();
+         *   }
+         * });
+         * replServer.defineCommand('saybye', function saybye() {
+         *   console.log('Goodbye!');
+         *   this.close();
+         * });
+         * ```
+         *
+         * The new commands can then be used from within the REPL instance:
+         *
+         * ```console
+         * > .sayhello Node.js User
+         * Hello, Node.js User!
+         * > .saybye
+         * Goodbye!
+         * ```
+         * @since v0.3.0
+         * @param keyword The command keyword (_without_ a leading `.` character).
+         * @param cmd The function to invoke when the command is processed.
+         */
+        defineCommand(keyword: string, cmd: REPLCommandAction | REPLCommand): void;
+        /**
+         * The `replServer.displayPrompt()` method readies the REPL instance for input
+         * from the user, printing the configured `prompt` to a new line in the `output`and resuming the `input` to accept new input.
+         *
+         * When multi-line input is being entered, an ellipsis is printed rather than the
+         * 'prompt'.
+         *
+         * When `preserveCursor` is `true`, the cursor placement will not be reset to `0`.
+         *
+         * The `replServer.displayPrompt` method is primarily intended to be called from
+         * within the action function for commands registered using the`replServer.defineCommand()` method.
+         * @since v0.1.91
+         */
+        displayPrompt(preserveCursor?: boolean): void;
+        /**
+         * The `replServer.clearBufferedCommand()` method clears any command that has been
+         * buffered but not yet executed. This method is primarily intended to be
+         * called from within the action function for commands registered using the`replServer.defineCommand()` method.
+         * @since v9.0.0
+         */
+        clearBufferedCommand(): void;
+        /**
+         * Initializes a history log file for the REPL instance. When executing the
+         * Node.js binary and using the command-line REPL, a history file is initialized
+         * by default. However, this is not the case when creating a REPL
+         * programmatically. Use this method to initialize a history log file when working
+         * with REPL instances programmatically.
+         * @since v11.10.0
+         * @param historyPath the path to the history file
+         * @param callback called when history writes are ready or upon error
+         */
+        setupHistory(path: string, callback: (err: Error | null, repl: this) => void): void;
+        /**
+         * events.EventEmitter
+         * 1. close - inherited from `readline.Interface`
+         * 2. line - inherited from `readline.Interface`
+         * 3. pause - inherited from `readline.Interface`
+         * 4. resume - inherited from `readline.Interface`
+         * 5. SIGCONT - inherited from `readline.Interface`
+         * 6. SIGINT - inherited from `readline.Interface`
+         * 7. SIGTSTP - inherited from `readline.Interface`
+         * 8. exit
+         * 9. reset
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'line', listener: (input: string) => void): this;
+        addListener(event: 'pause', listener: () => void): this;
+        addListener(event: 'resume', listener: () => void): this;
+        addListener(event: 'SIGCONT', listener: () => void): this;
+        addListener(event: 'SIGINT', listener: () => void): this;
+        addListener(event: 'SIGTSTP', listener: () => void): this;
+        addListener(event: 'exit', listener: () => void): this;
+        addListener(event: 'reset', listener: (context: Context) => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'close'): boolean;
+        emit(event: 'line', input: string): boolean;
+        emit(event: 'pause'): boolean;
+        emit(event: 'resume'): boolean;
+        emit(event: 'SIGCONT'): boolean;
+        emit(event: 'SIGINT'): boolean;
+        emit(event: 'SIGTSTP'): boolean;
+        emit(event: 'exit'): boolean;
+        emit(event: 'reset', context: Context): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'line', listener: (input: string) => void): this;
+        on(event: 'pause', listener: () => void): this;
+        on(event: 'resume', listener: () => void): this;
+        on(event: 'SIGCONT', listener: () => void): this;
+        on(event: 'SIGINT', listener: () => void): this;
+        on(event: 'SIGTSTP', listener: () => void): this;
+        on(event: 'exit', listener: () => void): this;
+        on(event: 'reset', listener: (context: Context) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'line', listener: (input: string) => void): this;
+        once(event: 'pause', listener: () => void): this;
+        once(event: 'resume', listener: () => void): this;
+        once(event: 'SIGCONT', listener: () => void): this;
+        once(event: 'SIGINT', listener: () => void): this;
+        once(event: 'SIGTSTP', listener: () => void): this;
+        once(event: 'exit', listener: () => void): this;
+        once(event: 'reset', listener: (context: Context) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'line', listener: (input: string) => void): this;
+        prependListener(event: 'pause', listener: () => void): this;
+        prependListener(event: 'resume', listener: () => void): this;
+        prependListener(event: 'SIGCONT', listener: () => void): this;
+        prependListener(event: 'SIGINT', listener: () => void): this;
+        prependListener(event: 'SIGTSTP', listener: () => void): this;
+        prependListener(event: 'exit', listener: () => void): this;
+        prependListener(event: 'reset', listener: (context: Context) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'line', listener: (input: string) => void): this;
+        prependOnceListener(event: 'pause', listener: () => void): this;
+        prependOnceListener(event: 'resume', listener: () => void): this;
+        prependOnceListener(event: 'SIGCONT', listener: () => void): this;
+        prependOnceListener(event: 'SIGINT', listener: () => void): this;
+        prependOnceListener(event: 'SIGTSTP', listener: () => void): this;
+        prependOnceListener(event: 'exit', listener: () => void): this;
+        prependOnceListener(event: 'reset', listener: (context: Context) => void): this;
+    }
+    /**
+     * A flag passed in the REPL options. Evaluates expressions in sloppy mode.
+     */
+    const REPL_MODE_SLOPPY: unique symbol;
+    /**
+     * A flag passed in the REPL options. Evaluates expressions in strict mode.
+     * This is equivalent to prefacing every repl statement with `'use strict'`.
+     */
+    const REPL_MODE_STRICT: unique symbol;
+    /**
+     * The `repl.start()` method creates and starts a {@link REPLServer} instance.
+     *
+     * If `options` is a string, then it specifies the input prompt:
+     *
+     * ```js
+     * const repl = require('repl');
+     *
+     * // a Unix style prompt
+     * repl.start('$ ');
+     * ```
+     * @since v0.1.91
+     */
+    function start(options?: string | ReplOptions): REPLServer;
+    /**
+     * Indicates a recoverable error that a `REPLServer` can use to support multi-line input.
+     *
+     * @see https://nodejs.org/dist/latest-v10.x/docs/api/repl.html#repl_recoverable_errors
+     */
+    class Recoverable extends SyntaxError {
+        err: Error;
+        constructor(err: Error);
+    }
+}
+declare module 'node:repl' {
+    export * from 'repl';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/stream.d.ts b/igv_component/node_modules/@types/node/ts4.8/stream.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d478f335cae3f999369b753b678466b6d834d516
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/stream.d.ts
@@ -0,0 +1,1339 @@
+/**
+ * A stream is an abstract interface for working with streaming data in Node.js.
+ * The `stream` module provides an API for implementing the stream interface.
+ *
+ * There are many stream objects provided by Node.js. For instance, a `request to an HTTP server` and `process.stdout` are both stream instances.
+ *
+ * Streams can be readable, writable, or both. All streams are instances of `EventEmitter`.
+ *
+ * To access the `stream` module:
+ *
+ * ```js
+ * const stream = require('stream');
+ * ```
+ *
+ * The `stream` module is useful for creating new types of stream instances. It is
+ * usually not necessary to use the `stream` module to consume streams.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/stream.js)
+ */
+declare module 'stream' {
+    import { EventEmitter, Abortable } from 'node:events';
+    import * as streamPromises from 'node:stream/promises';
+    import * as streamConsumers from 'node:stream/consumers';
+    import * as streamWeb from 'node:stream/web';
+    class internal extends EventEmitter {
+        pipe<T extends NodeJS.WritableStream>(
+            destination: T,
+            options?: {
+                end?: boolean | undefined;
+            }
+        ): T;
+    }
+    namespace internal {
+        class Stream extends internal {
+            constructor(opts?: ReadableOptions);
+        }
+        interface StreamOptions<T extends Stream> extends Abortable {
+            emitClose?: boolean | undefined;
+            highWaterMark?: number | undefined;
+            objectMode?: boolean | undefined;
+            construct?(this: T, callback: (error?: Error | null) => void): void;
+            destroy?(this: T, error: Error | null, callback: (error: Error | null) => void): void;
+            autoDestroy?: boolean | undefined;
+        }
+        interface ReadableOptions extends StreamOptions<Readable> {
+            encoding?: BufferEncoding | undefined;
+            read?(this: Readable, size: number): void;
+        }
+        /**
+         * @since v0.9.4
+         */
+        class Readable extends Stream implements NodeJS.ReadableStream {
+            /**
+             * A utility method for creating Readable Streams out of iterators.
+             */
+            static from(iterable: Iterable<any> | AsyncIterable<any>, options?: ReadableOptions): Readable;
+            /**
+             * A utility method for creating a `Readable` from a web `ReadableStream`.
+             * @since v17.0.0
+             * @experimental
+             */
+            static fromWeb(readableStream: streamWeb.ReadableStream, options?: Pick<ReadableOptions, 'encoding' | 'highWaterMark' | 'objectMode' | 'signal'>): Readable;
+            /**
+             * Returns whether the stream has been read from or cancelled.
+             * @since v16.8.0
+             */
+            static isDisturbed(stream: Readable | NodeJS.ReadableStream): boolean;
+            /**
+             * A utility method for creating a web `ReadableStream` from a `Readable`.
+             * @since v17.0.0
+             * @experimental
+             */
+            static toWeb(streamReadable: Readable): streamWeb.ReadableStream;
+            /**
+             * Returns whether the stream was destroyed or errored before emitting `'end'`.
+             * @since v16.8.0
+             * @experimental
+             */
+            readonly readableAborted: boolean;
+            /**
+             * Is `true` if it is safe to call `readable.read()`, which means
+             * the stream has not been destroyed or emitted `'error'` or `'end'`.
+             * @since v11.4.0
+             */
+            readable: boolean;
+            /**
+             * Returns whether `'data'` has been emitted.
+             * @since v16.7.0, v14.18.0
+             * @experimental
+             */
+            readonly readableDidRead: boolean;
+            /**
+             * Getter for the property `encoding` of a given `Readable` stream. The `encoding`property can be set using the `readable.setEncoding()` method.
+             * @since v12.7.0
+             */
+            readonly readableEncoding: BufferEncoding | null;
+            /**
+             * Becomes `true` when `'end'` event is emitted.
+             * @since v12.9.0
+             */
+            readonly readableEnded: boolean;
+            /**
+             * This property reflects the current state of a `Readable` stream as described
+             * in the `Three states` section.
+             * @since v9.4.0
+             */
+            readonly readableFlowing: boolean | null;
+            /**
+             * Returns the value of `highWaterMark` passed when creating this `Readable`.
+             * @since v9.3.0
+             */
+            readonly readableHighWaterMark: number;
+            /**
+             * This property contains the number of bytes (or objects) in the queue
+             * ready to be read. The value provides introspection data regarding
+             * the status of the `highWaterMark`.
+             * @since v9.4.0
+             */
+            readonly readableLength: number;
+            /**
+             * Getter for the property `objectMode` of a given `Readable` stream.
+             * @since v12.3.0
+             */
+            readonly readableObjectMode: boolean;
+            /**
+             * Is `true` after `readable.destroy()` has been called.
+             * @since v18.0.0
+             */
+            destroyed: boolean;
+            /**
+             * Is true after 'close' has been emitted.
+             * @since v8.0.0
+             */
+            readonly closed: boolean;
+            /**
+             * Returns error if the stream has been destroyed with an error.
+             * @since v18.0.0
+             */
+            readonly errored: Error | null;
+            constructor(opts?: ReadableOptions);
+            _construct?(callback: (error?: Error | null) => void): void;
+            _read(size: number): void;
+            /**
+             * The `readable.read()` method reads data out of the internal buffer and
+             * returns it. If no data is available to be read, `null` is returned. By default,
+             * the data is returned as a `Buffer` object unless an encoding has been
+             * specified using the `readable.setEncoding()` method or the stream is operating
+             * in object mode.
+             *
+             * The optional `size` argument specifies a specific number of bytes to read. If`size` bytes are not available to be read, `null` will be returned _unless_the stream has ended, in which
+             * case all of the data remaining in the internal
+             * buffer will be returned.
+             *
+             * If the `size` argument is not specified, all of the data contained in the
+             * internal buffer will be returned.
+             *
+             * The `size` argument must be less than or equal to 1 GiB.
+             *
+             * The `readable.read()` method should only be called on `Readable` streams
+             * operating in paused mode. In flowing mode, `readable.read()` is called
+             * automatically until the internal buffer is fully drained.
+             *
+             * ```js
+             * const readable = getReadableStreamSomehow();
+             *
+             * // 'readable' may be triggered multiple times as data is buffered in
+             * readable.on('readable', () => {
+             *   let chunk;
+             *   console.log('Stream is readable (new data received in buffer)');
+             *   // Use a loop to make sure we read all currently available data
+             *   while (null !== (chunk = readable.read())) {
+             *     console.log(`Read ${chunk.length} bytes of data...`);
+             *   }
+             * });
+             *
+             * // 'end' will be triggered once when there is no more data available
+             * readable.on('end', () => {
+             *   console.log('Reached end of stream.');
+             * });
+             * ```
+             *
+             * Each call to `readable.read()` returns a chunk of data, or `null`. The chunks
+             * are not concatenated. A `while` loop is necessary to consume all data
+             * currently in the buffer. When reading a large file `.read()` may return `null`,
+             * having consumed all buffered content so far, but there is still more data to
+             * come not yet buffered. In this case a new `'readable'` event will be emitted
+             * when there is more data in the buffer. Finally the `'end'` event will be
+             * emitted when there is no more data to come.
+             *
+             * Therefore to read a file's whole contents from a `readable`, it is necessary
+             * to collect chunks across multiple `'readable'` events:
+             *
+             * ```js
+             * const chunks = [];
+             *
+             * readable.on('readable', () => {
+             *   let chunk;
+             *   while (null !== (chunk = readable.read())) {
+             *     chunks.push(chunk);
+             *   }
+             * });
+             *
+             * readable.on('end', () => {
+             *   const content = chunks.join('');
+             * });
+             * ```
+             *
+             * A `Readable` stream in object mode will always return a single item from
+             * a call to `readable.read(size)`, regardless of the value of the`size` argument.
+             *
+             * If the `readable.read()` method returns a chunk of data, a `'data'` event will
+             * also be emitted.
+             *
+             * Calling {@link read} after the `'end'` event has
+             * been emitted will return `null`. No runtime error will be raised.
+             * @since v0.9.4
+             * @param size Optional argument to specify how much data to read.
+             */
+            read(size?: number): any;
+            /**
+             * The `readable.setEncoding()` method sets the character encoding for
+             * data read from the `Readable` stream.
+             *
+             * By default, no encoding is assigned and stream data will be returned as`Buffer` objects. Setting an encoding causes the stream data
+             * to be returned as strings of the specified encoding rather than as `Buffer`objects. For instance, calling `readable.setEncoding('utf8')` will cause the
+             * output data to be interpreted as UTF-8 data, and passed as strings. Calling`readable.setEncoding('hex')` will cause the data to be encoded in hexadecimal
+             * string format.
+             *
+             * The `Readable` stream will properly handle multi-byte characters delivered
+             * through the stream that would otherwise become improperly decoded if simply
+             * pulled from the stream as `Buffer` objects.
+             *
+             * ```js
+             * const readable = getReadableStreamSomehow();
+             * readable.setEncoding('utf8');
+             * readable.on('data', (chunk) => {
+             *   assert.equal(typeof chunk, 'string');
+             *   console.log('Got %d characters of string data:', chunk.length);
+             * });
+             * ```
+             * @since v0.9.4
+             * @param encoding The encoding to use.
+             */
+            setEncoding(encoding: BufferEncoding): this;
+            /**
+             * The `readable.pause()` method will cause a stream in flowing mode to stop
+             * emitting `'data'` events, switching out of flowing mode. Any data that
+             * becomes available will remain in the internal buffer.
+             *
+             * ```js
+             * const readable = getReadableStreamSomehow();
+             * readable.on('data', (chunk) => {
+             *   console.log(`Received ${chunk.length} bytes of data.`);
+             *   readable.pause();
+             *   console.log('There will be no additional data for 1 second.');
+             *   setTimeout(() => {
+             *     console.log('Now data will start flowing again.');
+             *     readable.resume();
+             *   }, 1000);
+             * });
+             * ```
+             *
+             * The `readable.pause()` method has no effect if there is a `'readable'`event listener.
+             * @since v0.9.4
+             */
+            pause(): this;
+            /**
+             * The `readable.resume()` method causes an explicitly paused `Readable` stream to
+             * resume emitting `'data'` events, switching the stream into flowing mode.
+             *
+             * The `readable.resume()` method can be used to fully consume the data from a
+             * stream without actually processing any of that data:
+             *
+             * ```js
+             * getReadableStreamSomehow()
+             *   .resume()
+             *   .on('end', () => {
+             *     console.log('Reached the end, but did not read anything.');
+             *   });
+             * ```
+             *
+             * The `readable.resume()` method has no effect if there is a `'readable'`event listener.
+             * @since v0.9.4
+             */
+            resume(): this;
+            /**
+             * The `readable.isPaused()` method returns the current operating state of the`Readable`. This is used primarily by the mechanism that underlies the`readable.pipe()` method. In most
+             * typical cases, there will be no reason to
+             * use this method directly.
+             *
+             * ```js
+             * const readable = new stream.Readable();
+             *
+             * readable.isPaused(); // === false
+             * readable.pause();
+             * readable.isPaused(); // === true
+             * readable.resume();
+             * readable.isPaused(); // === false
+             * ```
+             * @since v0.11.14
+             */
+            isPaused(): boolean;
+            /**
+             * The `readable.unpipe()` method detaches a `Writable` stream previously attached
+             * using the {@link pipe} method.
+             *
+             * If the `destination` is not specified, then _all_ pipes are detached.
+             *
+             * If the `destination` is specified, but no pipe is set up for it, then
+             * the method does nothing.
+             *
+             * ```js
+             * const fs = require('fs');
+             * const readable = getReadableStreamSomehow();
+             * const writable = fs.createWriteStream('file.txt');
+             * // All the data from readable goes into 'file.txt',
+             * // but only for the first second.
+             * readable.pipe(writable);
+             * setTimeout(() => {
+             *   console.log('Stop writing to file.txt.');
+             *   readable.unpipe(writable);
+             *   console.log('Manually close the file stream.');
+             *   writable.end();
+             * }, 1000);
+             * ```
+             * @since v0.9.4
+             * @param destination Optional specific stream to unpipe
+             */
+            unpipe(destination?: NodeJS.WritableStream): this;
+            /**
+             * Passing `chunk` as `null` signals the end of the stream (EOF) and behaves the
+             * same as `readable.push(null)`, after which no more data can be written. The EOF
+             * signal is put at the end of the buffer and any buffered data will still be
+             * flushed.
+             *
+             * The `readable.unshift()` method pushes a chunk of data back into the internal
+             * buffer. This is useful in certain situations where a stream is being consumed by
+             * code that needs to "un-consume" some amount of data that it has optimistically
+             * pulled out of the source, so that the data can be passed on to some other party.
+             *
+             * The `stream.unshift(chunk)` method cannot be called after the `'end'` event
+             * has been emitted or a runtime error will be thrown.
+             *
+             * Developers using `stream.unshift()` often should consider switching to
+             * use of a `Transform` stream instead. See the `API for stream implementers` section for more information.
+             *
+             * ```js
+             * // Pull off a header delimited by \n\n.
+             * // Use unshift() if we get too much.
+             * // Call the callback with (error, header, stream).
+             * const { StringDecoder } = require('string_decoder');
+             * function parseHeader(stream, callback) {
+             *   stream.on('error', callback);
+             *   stream.on('readable', onReadable);
+             *   const decoder = new StringDecoder('utf8');
+             *   let header = '';
+             *   function onReadable() {
+             *     let chunk;
+             *     while (null !== (chunk = stream.read())) {
+             *       const str = decoder.write(chunk);
+             *       if (str.includes('\n\n')) {
+             *         // Found the header boundary.
+             *         const split = str.split(/\n\n/);
+             *         header += split.shift();
+             *         const remaining = split.join('\n\n');
+             *         const buf = Buffer.from(remaining, 'utf8');
+             *         stream.removeListener('error', callback);
+             *         // Remove the 'readable' listener before unshifting.
+             *         stream.removeListener('readable', onReadable);
+             *         if (buf.length)
+             *           stream.unshift(buf);
+             *         // Now the body of the message can be read from the stream.
+             *         callback(null, header, stream);
+             *         return;
+             *       }
+             *       // Still reading the header.
+             *       header += str;
+             *     }
+             *   }
+             * }
+             * ```
+             *
+             * Unlike {@link push}, `stream.unshift(chunk)` will not
+             * end the reading process by resetting the internal reading state of the stream.
+             * This can cause unexpected results if `readable.unshift()` is called during a
+             * read (i.e. from within a {@link _read} implementation on a
+             * custom stream). Following the call to `readable.unshift()` with an immediate {@link push} will reset the reading state appropriately,
+             * however it is best to simply avoid calling `readable.unshift()` while in the
+             * process of performing a read.
+             * @since v0.9.11
+             * @param chunk Chunk of data to unshift onto the read queue. For streams not operating in object mode, `chunk` must be a string, `Buffer`, `Uint8Array` or `null`. For object mode
+             * streams, `chunk` may be any JavaScript value.
+             * @param encoding Encoding of string chunks. Must be a valid `Buffer` encoding, such as `'utf8'` or `'ascii'`.
+             */
+            unshift(chunk: any, encoding?: BufferEncoding): void;
+            /**
+             * Prior to Node.js 0.10, streams did not implement the entire `stream` module API
+             * as it is currently defined. (See `Compatibility` for more information.)
+             *
+             * When using an older Node.js library that emits `'data'` events and has a {@link pause} method that is advisory only, the`readable.wrap()` method can be used to create a `Readable`
+             * stream that uses
+             * the old stream as its data source.
+             *
+             * It will rarely be necessary to use `readable.wrap()` but the method has been
+             * provided as a convenience for interacting with older Node.js applications and
+             * libraries.
+             *
+             * ```js
+             * const { OldReader } = require('./old-api-module.js');
+             * const { Readable } = require('stream');
+             * const oreader = new OldReader();
+             * const myReader = new Readable().wrap(oreader);
+             *
+             * myReader.on('readable', () => {
+             *   myReader.read(); // etc.
+             * });
+             * ```
+             * @since v0.9.4
+             * @param stream An "old style" readable stream
+             */
+            wrap(stream: NodeJS.ReadableStream): this;
+            push(chunk: any, encoding?: BufferEncoding): boolean;
+            _destroy(error: Error | null, callback: (error?: Error | null) => void): void;
+            /**
+             * Destroy the stream. Optionally emit an `'error'` event, and emit a `'close'`event (unless `emitClose` is set to `false`). After this call, the readable
+             * stream will release any internal resources and subsequent calls to `push()`will be ignored.
+             *
+             * Once `destroy()` has been called any further calls will be a no-op and no
+             * further errors except from `_destroy()` may be emitted as `'error'`.
+             *
+             * Implementors should not override this method, but instead implement `readable._destroy()`.
+             * @since v8.0.0
+             * @param error Error which will be passed as payload in `'error'` event
+             */
+            destroy(error?: Error): this;
+            /**
+             * Event emitter
+             * The defined events on documents including:
+             * 1. close
+             * 2. data
+             * 3. end
+             * 4. error
+             * 5. pause
+             * 6. readable
+             * 7. resume
+             */
+            addListener(event: 'close', listener: () => void): this;
+            addListener(event: 'data', listener: (chunk: any) => void): this;
+            addListener(event: 'end', listener: () => void): this;
+            addListener(event: 'error', listener: (err: Error) => void): this;
+            addListener(event: 'pause', listener: () => void): this;
+            addListener(event: 'readable', listener: () => void): this;
+            addListener(event: 'resume', listener: () => void): this;
+            addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+            emit(event: 'close'): boolean;
+            emit(event: 'data', chunk: any): boolean;
+            emit(event: 'end'): boolean;
+            emit(event: 'error', err: Error): boolean;
+            emit(event: 'pause'): boolean;
+            emit(event: 'readable'): boolean;
+            emit(event: 'resume'): boolean;
+            emit(event: string | symbol, ...args: any[]): boolean;
+            on(event: 'close', listener: () => void): this;
+            on(event: 'data', listener: (chunk: any) => void): this;
+            on(event: 'end', listener: () => void): this;
+            on(event: 'error', listener: (err: Error) => void): this;
+            on(event: 'pause', listener: () => void): this;
+            on(event: 'readable', listener: () => void): this;
+            on(event: 'resume', listener: () => void): this;
+            on(event: string | symbol, listener: (...args: any[]) => void): this;
+            once(event: 'close', listener: () => void): this;
+            once(event: 'data', listener: (chunk: any) => void): this;
+            once(event: 'end', listener: () => void): this;
+            once(event: 'error', listener: (err: Error) => void): this;
+            once(event: 'pause', listener: () => void): this;
+            once(event: 'readable', listener: () => void): this;
+            once(event: 'resume', listener: () => void): this;
+            once(event: string | symbol, listener: (...args: any[]) => void): this;
+            prependListener(event: 'close', listener: () => void): this;
+            prependListener(event: 'data', listener: (chunk: any) => void): this;
+            prependListener(event: 'end', listener: () => void): this;
+            prependListener(event: 'error', listener: (err: Error) => void): this;
+            prependListener(event: 'pause', listener: () => void): this;
+            prependListener(event: 'readable', listener: () => void): this;
+            prependListener(event: 'resume', listener: () => void): this;
+            prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+            prependOnceListener(event: 'close', listener: () => void): this;
+            prependOnceListener(event: 'data', listener: (chunk: any) => void): this;
+            prependOnceListener(event: 'end', listener: () => void): this;
+            prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+            prependOnceListener(event: 'pause', listener: () => void): this;
+            prependOnceListener(event: 'readable', listener: () => void): this;
+            prependOnceListener(event: 'resume', listener: () => void): this;
+            prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+            removeListener(event: 'close', listener: () => void): this;
+            removeListener(event: 'data', listener: (chunk: any) => void): this;
+            removeListener(event: 'end', listener: () => void): this;
+            removeListener(event: 'error', listener: (err: Error) => void): this;
+            removeListener(event: 'pause', listener: () => void): this;
+            removeListener(event: 'readable', listener: () => void): this;
+            removeListener(event: 'resume', listener: () => void): this;
+            removeListener(event: string | symbol, listener: (...args: any[]) => void): this;
+            [Symbol.asyncIterator](): AsyncIterableIterator<any>;
+        }
+        interface WritableOptions extends StreamOptions<Writable> {
+            decodeStrings?: boolean | undefined;
+            defaultEncoding?: BufferEncoding | undefined;
+            write?(this: Writable, chunk: any, encoding: BufferEncoding, callback: (error?: Error | null) => void): void;
+            writev?(
+                this: Writable,
+                chunks: Array<{
+                    chunk: any;
+                    encoding: BufferEncoding;
+                }>,
+                callback: (error?: Error | null) => void
+            ): void;
+            final?(this: Writable, callback: (error?: Error | null) => void): void;
+        }
+        /**
+         * @since v0.9.4
+         */
+        class Writable extends Stream implements NodeJS.WritableStream {
+            /**
+             * A utility method for creating a `Writable` from a web `WritableStream`.
+             * @since v17.0.0
+             * @experimental
+             */
+            static fromWeb(writableStream: streamWeb.WritableStream, options?: Pick<WritableOptions, 'decodeStrings' | 'highWaterMark' | 'objectMode' | 'signal'>): Writable;
+            /**
+             * A utility method for creating a web `WritableStream` from a `Writable`.
+             * @since v17.0.0
+             * @experimental
+             */
+            static toWeb(streamWritable: Writable): streamWeb.WritableStream;
+            /**
+             * Is `true` if it is safe to call `writable.write()`, which means
+             * the stream has not been destroyed, errored or ended.
+             * @since v11.4.0
+             */
+            readonly writable: boolean;
+            /**
+             * Is `true` after `writable.end()` has been called. This property
+             * does not indicate whether the data has been flushed, for this use `writable.writableFinished` instead.
+             * @since v12.9.0
+             */
+            readonly writableEnded: boolean;
+            /**
+             * Is set to `true` immediately before the `'finish'` event is emitted.
+             * @since v12.6.0
+             */
+            readonly writableFinished: boolean;
+            /**
+             * Return the value of `highWaterMark` passed when creating this `Writable`.
+             * @since v9.3.0
+             */
+            readonly writableHighWaterMark: number;
+            /**
+             * This property contains the number of bytes (or objects) in the queue
+             * ready to be written. The value provides introspection data regarding
+             * the status of the `highWaterMark`.
+             * @since v9.4.0
+             */
+            readonly writableLength: number;
+            /**
+             * Getter for the property `objectMode` of a given `Writable` stream.
+             * @since v12.3.0
+             */
+            readonly writableObjectMode: boolean;
+            /**
+             * Number of times `writable.uncork()` needs to be
+             * called in order to fully uncork the stream.
+             * @since v13.2.0, v12.16.0
+             */
+            readonly writableCorked: number;
+            /**
+             * Is `true` after `writable.destroy()` has been called.
+             * @since v8.0.0
+             */
+            destroyed: boolean;
+            /**
+             * Is true after 'close' has been emitted.
+             * @since v8.0.0
+             */
+            readonly closed: boolean;
+            /**
+             * Returns error if the stream has been destroyed with an error.
+             * @since v18.0.0
+             */
+            readonly errored: Error | null;
+            /**
+             * Is `true` if the stream's buffer has been full and stream will emit 'drain'.
+             * @since v15.2.0, v14.17.0
+             */
+            readonly writableNeedDrain: boolean;
+            constructor(opts?: WritableOptions);
+            _write(chunk: any, encoding: BufferEncoding, callback: (error?: Error | null) => void): void;
+            _writev?(
+                chunks: Array<{
+                    chunk: any;
+                    encoding: BufferEncoding;
+                }>,
+                callback: (error?: Error | null) => void
+            ): void;
+            _construct?(callback: (error?: Error | null) => void): void;
+            _destroy(error: Error | null, callback: (error?: Error | null) => void): void;
+            _final(callback: (error?: Error | null) => void): void;
+            /**
+             * The `writable.write()` method writes some data to the stream, and calls the
+             * supplied `callback` once the data has been fully handled. If an error
+             * occurs, the `callback` will be called with the error as its
+             * first argument. The `callback` is called asynchronously and before `'error'` is
+             * emitted.
+             *
+             * The return value is `true` if the internal buffer is less than the`highWaterMark` configured when the stream was created after admitting `chunk`.
+             * If `false` is returned, further attempts to write data to the stream should
+             * stop until the `'drain'` event is emitted.
+             *
+             * While a stream is not draining, calls to `write()` will buffer `chunk`, and
+             * return false. Once all currently buffered chunks are drained (accepted for
+             * delivery by the operating system), the `'drain'` event will be emitted.
+             * Once `write()` returns false, do not write more chunks
+             * until the `'drain'` event is emitted. While calling `write()` on a stream that
+             * is not draining is allowed, Node.js will buffer all written chunks until
+             * maximum memory usage occurs, at which point it will abort unconditionally.
+             * Even before it aborts, high memory usage will cause poor garbage collector
+             * performance and high RSS (which is not typically released back to the system,
+             * even after the memory is no longer required). Since TCP sockets may never
+             * drain if the remote peer does not read the data, writing a socket that is
+             * not draining may lead to a remotely exploitable vulnerability.
+             *
+             * Writing data while the stream is not draining is particularly
+             * problematic for a `Transform`, because the `Transform` streams are paused
+             * by default until they are piped or a `'data'` or `'readable'` event handler
+             * is added.
+             *
+             * If the data to be written can be generated or fetched on demand, it is
+             * recommended to encapsulate the logic into a `Readable` and use {@link pipe}. However, if calling `write()` is preferred, it is
+             * possible to respect backpressure and avoid memory issues using the `'drain'` event:
+             *
+             * ```js
+             * function write(data, cb) {
+             *   if (!stream.write(data)) {
+             *     stream.once('drain', cb);
+             *   } else {
+             *     process.nextTick(cb);
+             *   }
+             * }
+             *
+             * // Wait for cb to be called before doing any other write.
+             * write('hello', () => {
+             *   console.log('Write completed, do more writes now.');
+             * });
+             * ```
+             *
+             * A `Writable` stream in object mode will always ignore the `encoding` argument.
+             * @since v0.9.4
+             * @param chunk Optional data to write. For streams not operating in object mode, `chunk` must be a string, `Buffer` or `Uint8Array`. For object mode streams, `chunk` may be any
+             * JavaScript value other than `null`.
+             * @param [encoding='utf8'] The encoding, if `chunk` is a string.
+             * @param callback Callback for when this chunk of data is flushed.
+             * @return `false` if the stream wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+             */
+            write(chunk: any, callback?: (error: Error | null | undefined) => void): boolean;
+            write(chunk: any, encoding: BufferEncoding, callback?: (error: Error | null | undefined) => void): boolean;
+            /**
+             * The `writable.setDefaultEncoding()` method sets the default `encoding` for a `Writable` stream.
+             * @since v0.11.15
+             * @param encoding The new default encoding
+             */
+            setDefaultEncoding(encoding: BufferEncoding): this;
+            /**
+             * Calling the `writable.end()` method signals that no more data will be written
+             * to the `Writable`. The optional `chunk` and `encoding` arguments allow one
+             * final additional chunk of data to be written immediately before closing the
+             * stream.
+             *
+             * Calling the {@link write} method after calling {@link end} will raise an error.
+             *
+             * ```js
+             * // Write 'hello, ' and then end with 'world!'.
+             * const fs = require('fs');
+             * const file = fs.createWriteStream('example.txt');
+             * file.write('hello, ');
+             * file.end('world!');
+             * // Writing more now is not allowed!
+             * ```
+             * @since v0.9.4
+             * @param chunk Optional data to write. For streams not operating in object mode, `chunk` must be a string, `Buffer` or `Uint8Array`. For object mode streams, `chunk` may be any
+             * JavaScript value other than `null`.
+             * @param encoding The encoding if `chunk` is a string
+             * @param callback Callback for when the stream is finished.
+             */
+            end(cb?: () => void): this;
+            end(chunk: any, cb?: () => void): this;
+            end(chunk: any, encoding: BufferEncoding, cb?: () => void): this;
+            /**
+             * The `writable.cork()` method forces all written data to be buffered in memory.
+             * The buffered data will be flushed when either the {@link uncork} or {@link end} methods are called.
+             *
+             * The primary intent of `writable.cork()` is to accommodate a situation in which
+             * several small chunks are written to the stream in rapid succession. Instead of
+             * immediately forwarding them to the underlying destination, `writable.cork()`buffers all the chunks until `writable.uncork()` is called, which will pass them
+             * all to `writable._writev()`, if present. This prevents a head-of-line blocking
+             * situation where data is being buffered while waiting for the first small chunk
+             * to be processed. However, use of `writable.cork()` without implementing`writable._writev()` may have an adverse effect on throughput.
+             *
+             * See also: `writable.uncork()`, `writable._writev()`.
+             * @since v0.11.2
+             */
+            cork(): void;
+            /**
+             * The `writable.uncork()` method flushes all data buffered since {@link cork} was called.
+             *
+             * When using `writable.cork()` and `writable.uncork()` to manage the buffering
+             * of writes to a stream, defer calls to `writable.uncork()` using`process.nextTick()`. Doing so allows batching of all`writable.write()` calls that occur within a given Node.js event
+             * loop phase.
+             *
+             * ```js
+             * stream.cork();
+             * stream.write('some ');
+             * stream.write('data ');
+             * process.nextTick(() => stream.uncork());
+             * ```
+             *
+             * If the `writable.cork()` method is called multiple times on a stream, the
+             * same number of calls to `writable.uncork()` must be called to flush the buffered
+             * data.
+             *
+             * ```js
+             * stream.cork();
+             * stream.write('some ');
+             * stream.cork();
+             * stream.write('data ');
+             * process.nextTick(() => {
+             *   stream.uncork();
+             *   // The data will not be flushed until uncork() is called a second time.
+             *   stream.uncork();
+             * });
+             * ```
+             *
+             * See also: `writable.cork()`.
+             * @since v0.11.2
+             */
+            uncork(): void;
+            /**
+             * Destroy the stream. Optionally emit an `'error'` event, and emit a `'close'`event (unless `emitClose` is set to `false`). After this call, the writable
+             * stream has ended and subsequent calls to `write()` or `end()` will result in
+             * an `ERR_STREAM_DESTROYED` error.
+             * This is a destructive and immediate way to destroy a stream. Previous calls to`write()` may not have drained, and may trigger an `ERR_STREAM_DESTROYED` error.
+             * Use `end()` instead of destroy if data should flush before close, or wait for
+             * the `'drain'` event before destroying the stream.
+             *
+             * Once `destroy()` has been called any further calls will be a no-op and no
+             * further errors except from `_destroy()` may be emitted as `'error'`.
+             *
+             * Implementors should not override this method,
+             * but instead implement `writable._destroy()`.
+             * @since v8.0.0
+             * @param error Optional, an error to emit with `'error'` event.
+             */
+            destroy(error?: Error): this;
+            /**
+             * Event emitter
+             * The defined events on documents including:
+             * 1. close
+             * 2. drain
+             * 3. error
+             * 4. finish
+             * 5. pipe
+             * 6. unpipe
+             */
+            addListener(event: 'close', listener: () => void): this;
+            addListener(event: 'drain', listener: () => void): this;
+            addListener(event: 'error', listener: (err: Error) => void): this;
+            addListener(event: 'finish', listener: () => void): this;
+            addListener(event: 'pipe', listener: (src: Readable) => void): this;
+            addListener(event: 'unpipe', listener: (src: Readable) => void): this;
+            addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+            emit(event: 'close'): boolean;
+            emit(event: 'drain'): boolean;
+            emit(event: 'error', err: Error): boolean;
+            emit(event: 'finish'): boolean;
+            emit(event: 'pipe', src: Readable): boolean;
+            emit(event: 'unpipe', src: Readable): boolean;
+            emit(event: string | symbol, ...args: any[]): boolean;
+            on(event: 'close', listener: () => void): this;
+            on(event: 'drain', listener: () => void): this;
+            on(event: 'error', listener: (err: Error) => void): this;
+            on(event: 'finish', listener: () => void): this;
+            on(event: 'pipe', listener: (src: Readable) => void): this;
+            on(event: 'unpipe', listener: (src: Readable) => void): this;
+            on(event: string | symbol, listener: (...args: any[]) => void): this;
+            once(event: 'close', listener: () => void): this;
+            once(event: 'drain', listener: () => void): this;
+            once(event: 'error', listener: (err: Error) => void): this;
+            once(event: 'finish', listener: () => void): this;
+            once(event: 'pipe', listener: (src: Readable) => void): this;
+            once(event: 'unpipe', listener: (src: Readable) => void): this;
+            once(event: string | symbol, listener: (...args: any[]) => void): this;
+            prependListener(event: 'close', listener: () => void): this;
+            prependListener(event: 'drain', listener: () => void): this;
+            prependListener(event: 'error', listener: (err: Error) => void): this;
+            prependListener(event: 'finish', listener: () => void): this;
+            prependListener(event: 'pipe', listener: (src: Readable) => void): this;
+            prependListener(event: 'unpipe', listener: (src: Readable) => void): this;
+            prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+            prependOnceListener(event: 'close', listener: () => void): this;
+            prependOnceListener(event: 'drain', listener: () => void): this;
+            prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+            prependOnceListener(event: 'finish', listener: () => void): this;
+            prependOnceListener(event: 'pipe', listener: (src: Readable) => void): this;
+            prependOnceListener(event: 'unpipe', listener: (src: Readable) => void): this;
+            prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+            removeListener(event: 'close', listener: () => void): this;
+            removeListener(event: 'drain', listener: () => void): this;
+            removeListener(event: 'error', listener: (err: Error) => void): this;
+            removeListener(event: 'finish', listener: () => void): this;
+            removeListener(event: 'pipe', listener: (src: Readable) => void): this;
+            removeListener(event: 'unpipe', listener: (src: Readable) => void): this;
+            removeListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        }
+        interface DuplexOptions extends ReadableOptions, WritableOptions {
+            allowHalfOpen?: boolean | undefined;
+            readableObjectMode?: boolean | undefined;
+            writableObjectMode?: boolean | undefined;
+            readableHighWaterMark?: number | undefined;
+            writableHighWaterMark?: number | undefined;
+            writableCorked?: number | undefined;
+            construct?(this: Duplex, callback: (error?: Error | null) => void): void;
+            read?(this: Duplex, size: number): void;
+            write?(this: Duplex, chunk: any, encoding: BufferEncoding, callback: (error?: Error | null) => void): void;
+            writev?(
+                this: Duplex,
+                chunks: Array<{
+                    chunk: any;
+                    encoding: BufferEncoding;
+                }>,
+                callback: (error?: Error | null) => void
+            ): void;
+            final?(this: Duplex, callback: (error?: Error | null) => void): void;
+            destroy?(this: Duplex, error: Error | null, callback: (error: Error | null) => void): void;
+        }
+        /**
+         * Duplex streams are streams that implement both the `Readable` and `Writable` interfaces.
+         *
+         * Examples of `Duplex` streams include:
+         *
+         * * `TCP sockets`
+         * * `zlib streams`
+         * * `crypto streams`
+         * @since v0.9.4
+         */
+        class Duplex extends Readable implements Writable {
+            readonly writable: boolean;
+            readonly writableEnded: boolean;
+            readonly writableFinished: boolean;
+            readonly writableHighWaterMark: number;
+            readonly writableLength: number;
+            readonly writableObjectMode: boolean;
+            readonly writableCorked: number;
+            readonly writableNeedDrain: boolean;
+            readonly closed: boolean;
+            readonly errored: Error | null;
+            /**
+             * If `false` then the stream will automatically end the writable side when the
+             * readable side ends. Set initially by the `allowHalfOpen` constructor option,
+             * which defaults to `false`.
+             *
+             * This can be changed manually to change the half-open behavior of an existing`Duplex` stream instance, but must be changed before the `'end'` event is
+             * emitted.
+             * @since v0.9.4
+             */
+            allowHalfOpen: boolean;
+            constructor(opts?: DuplexOptions);
+            /**
+             * A utility method for creating duplex streams.
+             *
+             * - `Stream` converts writable stream into writable `Duplex` and readable stream
+             *   to `Duplex`.
+             * - `Blob` converts into readable `Duplex`.
+             * - `string` converts into readable `Duplex`.
+             * - `ArrayBuffer` converts into readable `Duplex`.
+             * - `AsyncIterable` converts into a readable `Duplex`. Cannot yield `null`.
+             * - `AsyncGeneratorFunction` converts into a readable/writable transform
+             *   `Duplex`. Must take a source `AsyncIterable` as first parameter. Cannot yield
+             *   `null`.
+             * - `AsyncFunction` converts into a writable `Duplex`. Must return
+             *   either `null` or `undefined`
+             * - `Object ({ writable, readable })` converts `readable` and
+             *   `writable` into `Stream` and then combines them into `Duplex` where the
+             *   `Duplex` will write to the `writable` and read from the `readable`.
+             * - `Promise` converts into readable `Duplex`. Value `null` is ignored.
+             *
+             * @since v16.8.0
+             */
+            static from(src: Stream | Blob | ArrayBuffer | string | Iterable<any> | AsyncIterable<any> | AsyncGeneratorFunction | Promise<any> | Object): Duplex;
+            _write(chunk: any, encoding: BufferEncoding, callback: (error?: Error | null) => void): void;
+            _writev?(
+                chunks: Array<{
+                    chunk: any;
+                    encoding: BufferEncoding;
+                }>,
+                callback: (error?: Error | null) => void
+            ): void;
+            _destroy(error: Error | null, callback: (error: Error | null) => void): void;
+            _final(callback: (error?: Error | null) => void): void;
+            write(chunk: any, encoding?: BufferEncoding, cb?: (error: Error | null | undefined) => void): boolean;
+            write(chunk: any, cb?: (error: Error | null | undefined) => void): boolean;
+            setDefaultEncoding(encoding: BufferEncoding): this;
+            end(cb?: () => void): this;
+            end(chunk: any, cb?: () => void): this;
+            end(chunk: any, encoding?: BufferEncoding, cb?: () => void): this;
+            cork(): void;
+            uncork(): void;
+        }
+        type TransformCallback = (error?: Error | null, data?: any) => void;
+        interface TransformOptions extends DuplexOptions {
+            construct?(this: Transform, callback: (error?: Error | null) => void): void;
+            read?(this: Transform, size: number): void;
+            write?(this: Transform, chunk: any, encoding: BufferEncoding, callback: (error?: Error | null) => void): void;
+            writev?(
+                this: Transform,
+                chunks: Array<{
+                    chunk: any;
+                    encoding: BufferEncoding;
+                }>,
+                callback: (error?: Error | null) => void
+            ): void;
+            final?(this: Transform, callback: (error?: Error | null) => void): void;
+            destroy?(this: Transform, error: Error | null, callback: (error: Error | null) => void): void;
+            transform?(this: Transform, chunk: any, encoding: BufferEncoding, callback: TransformCallback): void;
+            flush?(this: Transform, callback: TransformCallback): void;
+        }
+        /**
+         * Transform streams are `Duplex` streams where the output is in some way
+         * related to the input. Like all `Duplex` streams, `Transform` streams
+         * implement both the `Readable` and `Writable` interfaces.
+         *
+         * Examples of `Transform` streams include:
+         *
+         * * `zlib streams`
+         * * `crypto streams`
+         * @since v0.9.4
+         */
+        class Transform extends Duplex {
+            constructor(opts?: TransformOptions);
+            _transform(chunk: any, encoding: BufferEncoding, callback: TransformCallback): void;
+            _flush(callback: TransformCallback): void;
+        }
+        /**
+         * The `stream.PassThrough` class is a trivial implementation of a `Transform` stream that simply passes the input bytes across to the output. Its purpose is
+         * primarily for examples and testing, but there are some use cases where`stream.PassThrough` is useful as a building block for novel sorts of streams.
+         */
+        class PassThrough extends Transform {}
+        /**
+         * Attaches an AbortSignal to a readable or writeable stream. This lets code
+         * control stream destruction using an `AbortController`.
+         *
+         * Calling `abort` on the `AbortController` corresponding to the passed`AbortSignal` will behave the same way as calling `.destroy(new AbortError())`on the stream.
+         *
+         * ```js
+         * const fs = require('fs');
+         *
+         * const controller = new AbortController();
+         * const read = addAbortSignal(
+         *   controller.signal,
+         *   fs.createReadStream(('object.json'))
+         * );
+         * // Later, abort the operation closing the stream
+         * controller.abort();
+         * ```
+         *
+         * Or using an `AbortSignal` with a readable stream as an async iterable:
+         *
+         * ```js
+         * const controller = new AbortController();
+         * setTimeout(() => controller.abort(), 10_000); // set a timeout
+         * const stream = addAbortSignal(
+         *   controller.signal,
+         *   fs.createReadStream(('object.json'))
+         * );
+         * (async () => {
+         *   try {
+         *     for await (const chunk of stream) {
+         *       await process(chunk);
+         *     }
+         *   } catch (e) {
+         *     if (e.name === 'AbortError') {
+         *       // The operation was cancelled
+         *     } else {
+         *       throw e;
+         *     }
+         *   }
+         * })();
+         * ```
+         * @since v15.4.0
+         * @param signal A signal representing possible cancellation
+         * @param stream a stream to attach a signal to
+         */
+        function addAbortSignal<T extends Stream>(signal: AbortSignal, stream: T): T;
+        interface FinishedOptions extends Abortable {
+            error?: boolean | undefined;
+            readable?: boolean | undefined;
+            writable?: boolean | undefined;
+        }
+        /**
+         * A function to get notified when a stream is no longer readable, writable
+         * or has experienced an error or a premature close event.
+         *
+         * ```js
+         * const { finished } = require('stream');
+         *
+         * const rs = fs.createReadStream('archive.tar');
+         *
+         * finished(rs, (err) => {
+         *   if (err) {
+         *     console.error('Stream failed.', err);
+         *   } else {
+         *     console.log('Stream is done reading.');
+         *   }
+         * });
+         *
+         * rs.resume(); // Drain the stream.
+         * ```
+         *
+         * Especially useful in error handling scenarios where a stream is destroyed
+         * prematurely (like an aborted HTTP request), and will not emit `'end'`or `'finish'`.
+         *
+         * The `finished` API provides promise version:
+         *
+         * ```js
+         * const { finished } = require('stream/promises');
+         *
+         * const rs = fs.createReadStream('archive.tar');
+         *
+         * async function run() {
+         *   await finished(rs);
+         *   console.log('Stream is done reading.');
+         * }
+         *
+         * run().catch(console.error);
+         * rs.resume(); // Drain the stream.
+         * ```
+         *
+         * `stream.finished()` leaves dangling event listeners (in particular`'error'`, `'end'`, `'finish'` and `'close'`) after `callback` has been
+         * invoked. The reason for this is so that unexpected `'error'` events (due to
+         * incorrect stream implementations) do not cause unexpected crashes.
+         * If this is unwanted behavior then the returned cleanup function needs to be
+         * invoked in the callback:
+         *
+         * ```js
+         * const cleanup = finished(rs, (err) => {
+         *   cleanup();
+         *   // ...
+         * });
+         * ```
+         * @since v10.0.0
+         * @param stream A readable and/or writable stream.
+         * @param callback A callback function that takes an optional error argument.
+         * @return A cleanup function which removes all registered listeners.
+         */
+        function finished(stream: NodeJS.ReadableStream | NodeJS.WritableStream | NodeJS.ReadWriteStream, options: FinishedOptions, callback: (err?: NodeJS.ErrnoException | null) => void): () => void;
+        function finished(stream: NodeJS.ReadableStream | NodeJS.WritableStream | NodeJS.ReadWriteStream, callback: (err?: NodeJS.ErrnoException | null) => void): () => void;
+        namespace finished {
+            function __promisify__(stream: NodeJS.ReadableStream | NodeJS.WritableStream | NodeJS.ReadWriteStream, options?: FinishedOptions): Promise<void>;
+        }
+        type PipelineSourceFunction<T> = () => Iterable<T> | AsyncIterable<T>;
+        type PipelineSource<T> = Iterable<T> | AsyncIterable<T> | NodeJS.ReadableStream | PipelineSourceFunction<T>;
+        type PipelineTransform<S extends PipelineTransformSource<any>, U> =
+            | NodeJS.ReadWriteStream
+            | ((source: S extends (...args: any[]) => Iterable<infer ST> | AsyncIterable<infer ST> ? AsyncIterable<ST> : S) => AsyncIterable<U>);
+        type PipelineTransformSource<T> = PipelineSource<T> | PipelineTransform<any, T>;
+        type PipelineDestinationIterableFunction<T> = (source: AsyncIterable<T>) => AsyncIterable<any>;
+        type PipelineDestinationPromiseFunction<T, P> = (source: AsyncIterable<T>) => Promise<P>;
+        type PipelineDestination<S extends PipelineTransformSource<any>, P> = S extends PipelineTransformSource<infer ST>
+            ? NodeJS.WritableStream | PipelineDestinationIterableFunction<ST> | PipelineDestinationPromiseFunction<ST, P>
+            : never;
+        type PipelineCallback<S extends PipelineDestination<any, any>> = S extends PipelineDestinationPromiseFunction<any, infer P>
+            ? (err: NodeJS.ErrnoException | null, value: P) => void
+            : (err: NodeJS.ErrnoException | null) => void;
+        type PipelinePromise<S extends PipelineDestination<any, any>> = S extends PipelineDestinationPromiseFunction<any, infer P> ? Promise<P> : Promise<void>;
+        interface PipelineOptions {
+            signal: AbortSignal;
+        }
+        /**
+         * A module method to pipe between streams and generators forwarding errors and
+         * properly cleaning up and provide a callback when the pipeline is complete.
+         *
+         * ```js
+         * const { pipeline } = require('stream');
+         * const fs = require('fs');
+         * const zlib = require('zlib');
+         *
+         * // Use the pipeline API to easily pipe a series of streams
+         * // together and get notified when the pipeline is fully done.
+         *
+         * // A pipeline to gzip a potentially huge tar file efficiently:
+         *
+         * pipeline(
+         *   fs.createReadStream('archive.tar'),
+         *   zlib.createGzip(),
+         *   fs.createWriteStream('archive.tar.gz'),
+         *   (err) => {
+         *     if (err) {
+         *       console.error('Pipeline failed.', err);
+         *     } else {
+         *       console.log('Pipeline succeeded.');
+         *     }
+         *   }
+         * );
+         * ```
+         *
+         * The `pipeline` API provides a promise version, which can also
+         * receive an options argument as the last parameter with a`signal` `AbortSignal` property. When the signal is aborted,`destroy` will be called on the underlying pipeline, with
+         * an`AbortError`.
+         *
+         * ```js
+         * const { pipeline } = require('stream/promises');
+         *
+         * async function run() {
+         *   await pipeline(
+         *     fs.createReadStream('archive.tar'),
+         *     zlib.createGzip(),
+         *     fs.createWriteStream('archive.tar.gz')
+         *   );
+         *   console.log('Pipeline succeeded.');
+         * }
+         *
+         * run().catch(console.error);
+         * ```
+         *
+         * To use an `AbortSignal`, pass it inside an options object,
+         * as the last argument:
+         *
+         * ```js
+         * const { pipeline } = require('stream/promises');
+         *
+         * async function run() {
+         *   const ac = new AbortController();
+         *   const signal = ac.signal;
+         *
+         *   setTimeout(() => ac.abort(), 1);
+         *   await pipeline(
+         *     fs.createReadStream('archive.tar'),
+         *     zlib.createGzip(),
+         *     fs.createWriteStream('archive.tar.gz'),
+         *     { signal },
+         *   );
+         * }
+         *
+         * run().catch(console.error); // AbortError
+         * ```
+         *
+         * The `pipeline` API also supports async generators:
+         *
+         * ```js
+         * const { pipeline } = require('stream/promises');
+         * const fs = require('fs');
+         *
+         * async function run() {
+         *   await pipeline(
+         *     fs.createReadStream('lowercase.txt'),
+         *     async function* (source, { signal }) {
+         *       source.setEncoding('utf8');  // Work with strings rather than `Buffer`s.
+         *       for await (const chunk of source) {
+         *         yield await processChunk(chunk, { signal });
+         *       }
+         *     },
+         *     fs.createWriteStream('uppercase.txt')
+         *   );
+         *   console.log('Pipeline succeeded.');
+         * }
+         *
+         * run().catch(console.error);
+         * ```
+         *
+         * Remember to handle the `signal` argument passed into the async generator.
+         * Especially in the case where the async generator is the source for the
+         * pipeline (i.e. first argument) or the pipeline will never complete.
+         *
+         * ```js
+         * const { pipeline } = require('stream/promises');
+         * const fs = require('fs');
+         *
+         * async function run() {
+         *   await pipeline(
+         *     async function* ({ signal }) {
+         *       await someLongRunningfn({ signal });
+         *       yield 'asd';
+         *     },
+         *     fs.createWriteStream('uppercase.txt')
+         *   );
+         *   console.log('Pipeline succeeded.');
+         * }
+         *
+         * run().catch(console.error);
+         * ```
+         *
+         * `stream.pipeline()` will call `stream.destroy(err)` on all streams except:
+         *
+         * * `Readable` streams which have emitted `'end'` or `'close'`.
+         * * `Writable` streams which have emitted `'finish'` or `'close'`.
+         *
+         * `stream.pipeline()` leaves dangling event listeners on the streams
+         * after the `callback` has been invoked. In the case of reuse of streams after
+         * failure, this can cause event listener leaks and swallowed errors. If the last
+         * stream is readable, dangling event listeners will be removed so that the last
+         * stream can be consumed later.
+         *
+         * `stream.pipeline()` closes all the streams when an error is raised.
+         * The `IncomingRequest` usage with `pipeline` could lead to an unexpected behavior
+         * once it would destroy the socket without sending the expected response.
+         * See the example below:
+         *
+         * ```js
+         * const fs = require('fs');
+         * const http = require('http');
+         * const { pipeline } = require('stream');
+         *
+         * const server = http.createServer((req, res) => {
+         *   const fileStream = fs.createReadStream('./fileNotExist.txt');
+         *   pipeline(fileStream, res, (err) => {
+         *     if (err) {
+         *       console.log(err); // No such file
+         *       // this message can't be sent once `pipeline` already destroyed the socket
+         *       return res.end('error!!!');
+         *     }
+         *   });
+         * });
+         * ```
+         * @since v10.0.0
+         * @param callback Called when the pipeline is fully done.
+         */
+        function pipeline<A extends PipelineSource<any>, B extends PipelineDestination<A, any>>(
+            source: A,
+            destination: B,
+            callback?: PipelineCallback<B>
+        ): B extends NodeJS.WritableStream ? B : NodeJS.WritableStream;
+        function pipeline<A extends PipelineSource<any>, T1 extends PipelineTransform<A, any>, B extends PipelineDestination<T1, any>>(
+            source: A,
+            transform1: T1,
+            destination: B,
+            callback?: PipelineCallback<B>
+        ): B extends NodeJS.WritableStream ? B : NodeJS.WritableStream;
+        function pipeline<A extends PipelineSource<any>, T1 extends PipelineTransform<A, any>, T2 extends PipelineTransform<T1, any>, B extends PipelineDestination<T2, any>>(
+            source: A,
+            transform1: T1,
+            transform2: T2,
+            destination: B,
+            callback?: PipelineCallback<B>
+        ): B extends NodeJS.WritableStream ? B : NodeJS.WritableStream;
+        function pipeline<
+            A extends PipelineSource<any>,
+            T1 extends PipelineTransform<A, any>,
+            T2 extends PipelineTransform<T1, any>,
+            T3 extends PipelineTransform<T2, any>,
+            B extends PipelineDestination<T3, any>
+        >(source: A, transform1: T1, transform2: T2, transform3: T3, destination: B, callback?: PipelineCallback<B>): B extends NodeJS.WritableStream ? B : NodeJS.WritableStream;
+        function pipeline<
+            A extends PipelineSource<any>,
+            T1 extends PipelineTransform<A, any>,
+            T2 extends PipelineTransform<T1, any>,
+            T3 extends PipelineTransform<T2, any>,
+            T4 extends PipelineTransform<T3, any>,
+            B extends PipelineDestination<T4, any>
+        >(source: A, transform1: T1, transform2: T2, transform3: T3, transform4: T4, destination: B, callback?: PipelineCallback<B>): B extends NodeJS.WritableStream ? B : NodeJS.WritableStream;
+        function pipeline(
+            streams: ReadonlyArray<NodeJS.ReadableStream | NodeJS.WritableStream | NodeJS.ReadWriteStream>,
+            callback?: (err: NodeJS.ErrnoException | null) => void
+        ): NodeJS.WritableStream;
+        function pipeline(
+            stream1: NodeJS.ReadableStream,
+            stream2: NodeJS.ReadWriteStream | NodeJS.WritableStream,
+            ...streams: Array<NodeJS.ReadWriteStream | NodeJS.WritableStream | ((err: NodeJS.ErrnoException | null) => void)>
+        ): NodeJS.WritableStream;
+        namespace pipeline {
+            function __promisify__<A extends PipelineSource<any>, B extends PipelineDestination<A, any>>(source: A, destination: B, options?: PipelineOptions): PipelinePromise<B>;
+            function __promisify__<A extends PipelineSource<any>, T1 extends PipelineTransform<A, any>, B extends PipelineDestination<T1, any>>(
+                source: A,
+                transform1: T1,
+                destination: B,
+                options?: PipelineOptions
+            ): PipelinePromise<B>;
+            function __promisify__<A extends PipelineSource<any>, T1 extends PipelineTransform<A, any>, T2 extends PipelineTransform<T1, any>, B extends PipelineDestination<T2, any>>(
+                source: A,
+                transform1: T1,
+                transform2: T2,
+                destination: B,
+                options?: PipelineOptions
+            ): PipelinePromise<B>;
+            function __promisify__<
+                A extends PipelineSource<any>,
+                T1 extends PipelineTransform<A, any>,
+                T2 extends PipelineTransform<T1, any>,
+                T3 extends PipelineTransform<T2, any>,
+                B extends PipelineDestination<T3, any>
+            >(source: A, transform1: T1, transform2: T2, transform3: T3, destination: B, options?: PipelineOptions): PipelinePromise<B>;
+            function __promisify__<
+                A extends PipelineSource<any>,
+                T1 extends PipelineTransform<A, any>,
+                T2 extends PipelineTransform<T1, any>,
+                T3 extends PipelineTransform<T2, any>,
+                T4 extends PipelineTransform<T3, any>,
+                B extends PipelineDestination<T4, any>
+            >(source: A, transform1: T1, transform2: T2, transform3: T3, transform4: T4, destination: B, options?: PipelineOptions): PipelinePromise<B>;
+            function __promisify__(streams: ReadonlyArray<NodeJS.ReadableStream | NodeJS.WritableStream | NodeJS.ReadWriteStream>, options?: PipelineOptions): Promise<void>;
+            function __promisify__(
+                stream1: NodeJS.ReadableStream,
+                stream2: NodeJS.ReadWriteStream | NodeJS.WritableStream,
+                ...streams: Array<NodeJS.ReadWriteStream | NodeJS.WritableStream | PipelineOptions>
+            ): Promise<void>;
+        }
+        interface Pipe {
+            close(): void;
+            hasRef(): boolean;
+            ref(): void;
+            unref(): void;
+        }
+
+        /**
+         * Returns whether the stream has encountered an error.
+         * @since v17.3.0
+         */
+        function isErrored(stream: Readable | Writable | NodeJS.ReadableStream | NodeJS.WritableStream): boolean;
+
+        /**
+         * Returns whether the stream is readable.
+         * @since v17.4.0
+         */
+        function isReadable(stream: Readable | NodeJS.ReadableStream): boolean;
+
+        const promises: typeof streamPromises;
+        const consumers: typeof streamConsumers;
+    }
+    export = internal;
+}
+declare module 'node:stream' {
+    import stream = require('stream');
+    export = stream;
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/stream/consumers.d.ts b/igv_component/node_modules/@types/node/ts4.8/stream/consumers.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..ce6c9bb7852f27fdb23877aa6917b63f7dfe3e7b
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/stream/consumers.d.ts
@@ -0,0 +1,24 @@
+// Duplicates of interface in lib.dom.ts.
+// Duplicated here rather than referencing lib.dom.ts because doing so causes lib.dom.ts to be loaded for "test-all"
+// Which in turn causes tests to pass that shouldn't pass.
+//
+// This interface is not, and should not be, exported.
+interface Blob {
+    readonly size: number;
+    readonly type: string;
+    arrayBuffer(): Promise<ArrayBuffer>;
+    slice(start?: number, end?: number, contentType?: string): Blob;
+    stream(): NodeJS.ReadableStream;
+    text(): Promise<string>;
+}
+declare module 'stream/consumers' {
+    import { Readable } from 'node:stream';
+    function buffer(stream: NodeJS.ReadableStream | Readable | AsyncIterator<any>): Promise<Buffer>;
+    function text(stream: NodeJS.ReadableStream | Readable | AsyncIterator<any>): Promise<string>;
+    function arrayBuffer(stream: NodeJS.ReadableStream | Readable | AsyncIterator<any>): Promise<ArrayBuffer>;
+    function blob(stream: NodeJS.ReadableStream | Readable | AsyncIterator<any>): Promise<Blob>;
+    function json(stream: NodeJS.ReadableStream | Readable | AsyncIterator<any>): Promise<unknown>;
+}
+declare module 'node:stream/consumers' {
+    export * from 'stream/consumers';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/stream/promises.d.ts b/igv_component/node_modules/@types/node/ts4.8/stream/promises.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b427073de50f3c33d229092dafbe0ea778c36294
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/stream/promises.d.ts
@@ -0,0 +1,42 @@
+declare module 'stream/promises' {
+    import { FinishedOptions, PipelineSource, PipelineTransform, PipelineDestination, PipelinePromise, PipelineOptions } from 'node:stream';
+    function finished(stream: NodeJS.ReadableStream | NodeJS.WritableStream | NodeJS.ReadWriteStream, options?: FinishedOptions): Promise<void>;
+    function pipeline<A extends PipelineSource<any>, B extends PipelineDestination<A, any>>(source: A, destination: B, options?: PipelineOptions): PipelinePromise<B>;
+    function pipeline<A extends PipelineSource<any>, T1 extends PipelineTransform<A, any>, B extends PipelineDestination<T1, any>>(
+        source: A,
+        transform1: T1,
+        destination: B,
+        options?: PipelineOptions
+    ): PipelinePromise<B>;
+    function pipeline<A extends PipelineSource<any>, T1 extends PipelineTransform<A, any>, T2 extends PipelineTransform<T1, any>, B extends PipelineDestination<T2, any>>(
+        source: A,
+        transform1: T1,
+        transform2: T2,
+        destination: B,
+        options?: PipelineOptions
+    ): PipelinePromise<B>;
+    function pipeline<
+        A extends PipelineSource<any>,
+        T1 extends PipelineTransform<A, any>,
+        T2 extends PipelineTransform<T1, any>,
+        T3 extends PipelineTransform<T2, any>,
+        B extends PipelineDestination<T3, any>
+    >(source: A, transform1: T1, transform2: T2, transform3: T3, destination: B, options?: PipelineOptions): PipelinePromise<B>;
+    function pipeline<
+        A extends PipelineSource<any>,
+        T1 extends PipelineTransform<A, any>,
+        T2 extends PipelineTransform<T1, any>,
+        T3 extends PipelineTransform<T2, any>,
+        T4 extends PipelineTransform<T3, any>,
+        B extends PipelineDestination<T4, any>
+    >(source: A, transform1: T1, transform2: T2, transform3: T3, transform4: T4, destination: B, options?: PipelineOptions): PipelinePromise<B>;
+    function pipeline(streams: ReadonlyArray<NodeJS.ReadableStream | NodeJS.WritableStream | NodeJS.ReadWriteStream>, options?: PipelineOptions): Promise<void>;
+    function pipeline(
+        stream1: NodeJS.ReadableStream,
+        stream2: NodeJS.ReadWriteStream | NodeJS.WritableStream,
+        ...streams: Array<NodeJS.ReadWriteStream | NodeJS.WritableStream | PipelineOptions>
+    ): Promise<void>;
+}
+declare module 'node:stream/promises' {
+    export * from 'stream/promises';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/stream/web.d.ts b/igv_component/node_modules/@types/node/ts4.8/stream/web.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..f9ef0570dc3f9290195183725d8e25fd1c40c249
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/stream/web.d.ts
@@ -0,0 +1,330 @@
+declare module 'stream/web' {
+    // stub module, pending copy&paste from .d.ts or manual impl
+    // copy from lib.dom.d.ts
+    interface ReadableWritablePair<R = any, W = any> {
+        readable: ReadableStream<R>;
+        /**
+         * Provides a convenient, chainable way of piping this readable stream
+         * through a transform stream (or any other { writable, readable }
+         * pair). It simply pipes the stream into the writable side of the
+         * supplied pair, and returns the readable side for further use.
+         *
+         * Piping a stream will lock it for the duration of the pipe, preventing
+         * any other consumer from acquiring a reader.
+         */
+        writable: WritableStream<W>;
+    }
+    interface StreamPipeOptions {
+        preventAbort?: boolean;
+        preventCancel?: boolean;
+        /**
+         * Pipes this readable stream to a given writable stream destination.
+         * The way in which the piping process behaves under various error
+         * conditions can be customized with a number of passed options. It
+         * returns a promise that fulfills when the piping process completes
+         * successfully, or rejects if any errors were encountered.
+         *
+         * Piping a stream will lock it for the duration of the pipe, preventing
+         * any other consumer from acquiring a reader.
+         *
+         * Errors and closures of the source and destination streams propagate
+         * as follows:
+         *
+         * An error in this source readable stream will abort destination,
+         * unless preventAbort is truthy. The returned promise will be rejected
+         * with the source's error, or with any error that occurs during
+         * aborting the destination.
+         *
+         * An error in destination will cancel this source readable stream,
+         * unless preventCancel is truthy. The returned promise will be rejected
+         * with the destination's error, or with any error that occurs during
+         * canceling the source.
+         *
+         * When this source readable stream closes, destination will be closed,
+         * unless preventClose is truthy. The returned promise will be fulfilled
+         * once this process completes, unless an error is encountered while
+         * closing the destination, in which case it will be rejected with that
+         * error.
+         *
+         * If destination starts out closed or closing, this source readable
+         * stream will be canceled, unless preventCancel is true. The returned
+         * promise will be rejected with an error indicating piping to a closed
+         * stream failed, or with any error that occurs during canceling the
+         * source.
+         *
+         * The signal option can be set to an AbortSignal to allow aborting an
+         * ongoing pipe operation via the corresponding AbortController. In this
+         * case, this source readable stream will be canceled, and destination
+         * aborted, unless the respective options preventCancel or preventAbort
+         * are set.
+         */
+        preventClose?: boolean;
+        signal?: AbortSignal;
+    }
+    interface ReadableStreamGenericReader {
+        readonly closed: Promise<undefined>;
+        cancel(reason?: any): Promise<void>;
+    }
+    interface ReadableStreamDefaultReadValueResult<T> {
+        done: false;
+        value: T;
+    }
+    interface ReadableStreamDefaultReadDoneResult {
+        done: true;
+        value?: undefined;
+    }
+    type ReadableStreamController<T> = ReadableStreamDefaultController<T>;
+    type ReadableStreamDefaultReadResult<T> = ReadableStreamDefaultReadValueResult<T> | ReadableStreamDefaultReadDoneResult;
+    interface ReadableByteStreamControllerCallback {
+        (controller: ReadableByteStreamController): void | PromiseLike<void>;
+    }
+    interface UnderlyingSinkAbortCallback {
+        (reason?: any): void | PromiseLike<void>;
+    }
+    interface UnderlyingSinkCloseCallback {
+        (): void | PromiseLike<void>;
+    }
+    interface UnderlyingSinkStartCallback {
+        (controller: WritableStreamDefaultController): any;
+    }
+    interface UnderlyingSinkWriteCallback<W> {
+        (chunk: W, controller: WritableStreamDefaultController): void | PromiseLike<void>;
+    }
+    interface UnderlyingSourceCancelCallback {
+        (reason?: any): void | PromiseLike<void>;
+    }
+    interface UnderlyingSourcePullCallback<R> {
+        (controller: ReadableStreamController<R>): void | PromiseLike<void>;
+    }
+    interface UnderlyingSourceStartCallback<R> {
+        (controller: ReadableStreamController<R>): any;
+    }
+    interface TransformerFlushCallback<O> {
+        (controller: TransformStreamDefaultController<O>): void | PromiseLike<void>;
+    }
+    interface TransformerStartCallback<O> {
+        (controller: TransformStreamDefaultController<O>): any;
+    }
+    interface TransformerTransformCallback<I, O> {
+        (chunk: I, controller: TransformStreamDefaultController<O>): void | PromiseLike<void>;
+    }
+    interface UnderlyingByteSource {
+        autoAllocateChunkSize?: number;
+        cancel?: ReadableStreamErrorCallback;
+        pull?: ReadableByteStreamControllerCallback;
+        start?: ReadableByteStreamControllerCallback;
+        type: 'bytes';
+    }
+    interface UnderlyingSource<R = any> {
+        cancel?: UnderlyingSourceCancelCallback;
+        pull?: UnderlyingSourcePullCallback<R>;
+        start?: UnderlyingSourceStartCallback<R>;
+        type?: undefined;
+    }
+    interface UnderlyingSink<W = any> {
+        abort?: UnderlyingSinkAbortCallback;
+        close?: UnderlyingSinkCloseCallback;
+        start?: UnderlyingSinkStartCallback;
+        type?: undefined;
+        write?: UnderlyingSinkWriteCallback<W>;
+    }
+    interface ReadableStreamErrorCallback {
+        (reason: any): void | PromiseLike<void>;
+    }
+    /** This Streams API interface represents a readable stream of byte data. */
+    interface ReadableStream<R = any> {
+        readonly locked: boolean;
+        cancel(reason?: any): Promise<void>;
+        getReader(): ReadableStreamDefaultReader<R>;
+        pipeThrough<T>(transform: ReadableWritablePair<T, R>, options?: StreamPipeOptions): ReadableStream<T>;
+        pipeTo(destination: WritableStream<R>, options?: StreamPipeOptions): Promise<void>;
+        tee(): [ReadableStream<R>, ReadableStream<R>];
+        values(options?: { preventCancel?: boolean }): AsyncIterableIterator<R>;
+        [Symbol.asyncIterator](): AsyncIterableIterator<R>;
+    }
+    const ReadableStream: {
+        prototype: ReadableStream;
+        new (underlyingSource: UnderlyingByteSource, strategy?: QueuingStrategy<Uint8Array>): ReadableStream<Uint8Array>;
+        new <R = any>(underlyingSource?: UnderlyingSource<R>, strategy?: QueuingStrategy<R>): ReadableStream<R>;
+    };
+    interface ReadableStreamDefaultReader<R = any> extends ReadableStreamGenericReader {
+        read(): Promise<ReadableStreamDefaultReadResult<R>>;
+        releaseLock(): void;
+    }
+    const ReadableStreamDefaultReader: {
+        prototype: ReadableStreamDefaultReader;
+        new <R = any>(stream: ReadableStream<R>): ReadableStreamDefaultReader<R>;
+    };
+    const ReadableStreamBYOBReader: any;
+    const ReadableStreamBYOBRequest: any;
+    interface ReadableByteStreamController {
+        readonly byobRequest: undefined;
+        readonly desiredSize: number | null;
+        close(): void;
+        enqueue(chunk: ArrayBufferView): void;
+        error(error?: any): void;
+    }
+    const ReadableByteStreamController: {
+        prototype: ReadableByteStreamController;
+        new (): ReadableByteStreamController;
+    };
+    interface ReadableStreamDefaultController<R = any> {
+        readonly desiredSize: number | null;
+        close(): void;
+        enqueue(chunk?: R): void;
+        error(e?: any): void;
+    }
+    const ReadableStreamDefaultController: {
+        prototype: ReadableStreamDefaultController;
+        new (): ReadableStreamDefaultController;
+    };
+    interface Transformer<I = any, O = any> {
+        flush?: TransformerFlushCallback<O>;
+        readableType?: undefined;
+        start?: TransformerStartCallback<O>;
+        transform?: TransformerTransformCallback<I, O>;
+        writableType?: undefined;
+    }
+    interface TransformStream<I = any, O = any> {
+        readonly readable: ReadableStream<O>;
+        readonly writable: WritableStream<I>;
+    }
+    const TransformStream: {
+        prototype: TransformStream;
+        new <I = any, O = any>(transformer?: Transformer<I, O>, writableStrategy?: QueuingStrategy<I>, readableStrategy?: QueuingStrategy<O>): TransformStream<I, O>;
+    };
+    interface TransformStreamDefaultController<O = any> {
+        readonly desiredSize: number | null;
+        enqueue(chunk?: O): void;
+        error(reason?: any): void;
+        terminate(): void;
+    }
+    const TransformStreamDefaultController: {
+        prototype: TransformStreamDefaultController;
+        new (): TransformStreamDefaultController;
+    };
+    /**
+     * This Streams API interface provides a standard abstraction for writing
+     * streaming data to a destination, known as a sink. This object comes with
+     * built-in back pressure and queuing.
+     */
+    interface WritableStream<W = any> {
+        readonly locked: boolean;
+        abort(reason?: any): Promise<void>;
+        close(): Promise<void>;
+        getWriter(): WritableStreamDefaultWriter<W>;
+    }
+    const WritableStream: {
+        prototype: WritableStream;
+        new <W = any>(underlyingSink?: UnderlyingSink<W>, strategy?: QueuingStrategy<W>): WritableStream<W>;
+    };
+    /**
+     * This Streams API interface is the object returned by
+     * WritableStream.getWriter() and once created locks the < writer to the
+     * WritableStream ensuring that no other streams can write to the underlying
+     * sink.
+     */
+    interface WritableStreamDefaultWriter<W = any> {
+        readonly closed: Promise<undefined>;
+        readonly desiredSize: number | null;
+        readonly ready: Promise<undefined>;
+        abort(reason?: any): Promise<void>;
+        close(): Promise<void>;
+        releaseLock(): void;
+        write(chunk?: W): Promise<void>;
+    }
+    const WritableStreamDefaultWriter: {
+        prototype: WritableStreamDefaultWriter;
+        new <W = any>(stream: WritableStream<W>): WritableStreamDefaultWriter<W>;
+    };
+    /**
+     * This Streams API interface represents a controller allowing control of a
+     * WritableStream's state. When constructing a WritableStream, the
+     * underlying sink is given a corresponding WritableStreamDefaultController
+     * instance to manipulate.
+     */
+    interface WritableStreamDefaultController {
+        error(e?: any): void;
+    }
+    const WritableStreamDefaultController: {
+        prototype: WritableStreamDefaultController;
+        new (): WritableStreamDefaultController;
+    };
+    interface QueuingStrategy<T = any> {
+        highWaterMark?: number;
+        size?: QueuingStrategySize<T>;
+    }
+    interface QueuingStrategySize<T = any> {
+        (chunk?: T): number;
+    }
+    interface QueuingStrategyInit {
+        /**
+         * Creates a new ByteLengthQueuingStrategy with the provided high water
+         * mark.
+         *
+         * Note that the provided high water mark will not be validated ahead of
+         * time. Instead, if it is negative, NaN, or not a number, the resulting
+         * ByteLengthQueuingStrategy will cause the corresponding stream
+         * constructor to throw.
+         */
+        highWaterMark: number;
+    }
+    /**
+     * This Streams API interface provides a built-in byte length queuing
+     * strategy that can be used when constructing streams.
+     */
+    interface ByteLengthQueuingStrategy extends QueuingStrategy<ArrayBufferView> {
+        readonly highWaterMark: number;
+        readonly size: QueuingStrategySize<ArrayBufferView>;
+    }
+    const ByteLengthQueuingStrategy: {
+        prototype: ByteLengthQueuingStrategy;
+        new (init: QueuingStrategyInit): ByteLengthQueuingStrategy;
+    };
+    /**
+     * This Streams API interface provides a built-in byte length queuing
+     * strategy that can be used when constructing streams.
+     */
+    interface CountQueuingStrategy extends QueuingStrategy {
+        readonly highWaterMark: number;
+        readonly size: QueuingStrategySize;
+    }
+    const CountQueuingStrategy: {
+        prototype: CountQueuingStrategy;
+        new (init: QueuingStrategyInit): CountQueuingStrategy;
+    };
+    interface TextEncoderStream {
+        /** Returns "utf-8". */
+        readonly encoding: 'utf-8';
+        readonly readable: ReadableStream<Uint8Array>;
+        readonly writable: WritableStream<string>;
+        readonly [Symbol.toStringTag]: string;
+    }
+    const TextEncoderStream: {
+        prototype: TextEncoderStream;
+        new (): TextEncoderStream;
+    };
+    interface TextDecoderOptions {
+        fatal?: boolean;
+        ignoreBOM?: boolean;
+    }
+    type BufferSource = ArrayBufferView | ArrayBuffer;
+    interface TextDecoderStream {
+        /** Returns encoding's name, lower cased. */
+        readonly encoding: string;
+        /** Returns `true` if error mode is "fatal", and `false` otherwise. */
+        readonly fatal: boolean;
+        /** Returns `true` if ignore BOM flag is set, and `false` otherwise. */
+        readonly ignoreBOM: boolean;
+        readonly readable: ReadableStream<string>;
+        readonly writable: WritableStream<BufferSource>;
+        readonly [Symbol.toStringTag]: string;
+    }
+    const TextDecoderStream: {
+        prototype: TextDecoderStream;
+        new (label?: string, options?: TextDecoderOptions): TextDecoderStream;
+    };
+}
+declare module 'node:stream/web' {
+    export * from 'stream/web';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/string_decoder.d.ts b/igv_component/node_modules/@types/node/ts4.8/string_decoder.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a5858041116333dfaa018a9e5cf89e3a9fc78d71
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/string_decoder.d.ts
@@ -0,0 +1,67 @@
+/**
+ * The `string_decoder` module provides an API for decoding `Buffer` objects into
+ * strings in a manner that preserves encoded multi-byte UTF-8 and UTF-16
+ * characters. It can be accessed using:
+ *
+ * ```js
+ * const { StringDecoder } = require('string_decoder');
+ * ```
+ *
+ * The following example shows the basic use of the `StringDecoder` class.
+ *
+ * ```js
+ * const { StringDecoder } = require('string_decoder');
+ * const decoder = new StringDecoder('utf8');
+ *
+ * const cent = Buffer.from([0xC2, 0xA2]);
+ * console.log(decoder.write(cent));
+ *
+ * const euro = Buffer.from([0xE2, 0x82, 0xAC]);
+ * console.log(decoder.write(euro));
+ * ```
+ *
+ * When a `Buffer` instance is written to the `StringDecoder` instance, an
+ * internal buffer is used to ensure that the decoded string does not contain
+ * any incomplete multibyte characters. These are held in the buffer until the
+ * next call to `stringDecoder.write()` or until `stringDecoder.end()` is called.
+ *
+ * In the following example, the three UTF-8 encoded bytes of the European Euro
+ * symbol (`€`) are written over three separate operations:
+ *
+ * ```js
+ * const { StringDecoder } = require('string_decoder');
+ * const decoder = new StringDecoder('utf8');
+ *
+ * decoder.write(Buffer.from([0xE2]));
+ * decoder.write(Buffer.from([0x82]));
+ * console.log(decoder.end(Buffer.from([0xAC])));
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/string_decoder.js)
+ */
+declare module 'string_decoder' {
+    class StringDecoder {
+        constructor(encoding?: BufferEncoding);
+        /**
+         * Returns a decoded string, ensuring that any incomplete multibyte characters at
+         * the end of the `Buffer`, or `TypedArray`, or `DataView` are omitted from the
+         * returned string and stored in an internal buffer for the next call to`stringDecoder.write()` or `stringDecoder.end()`.
+         * @since v0.1.99
+         * @param buffer A `Buffer`, or `TypedArray`, or `DataView` containing the bytes to decode.
+         */
+        write(buffer: Buffer): string;
+        /**
+         * Returns any remaining input stored in the internal buffer as a string. Bytes
+         * representing incomplete UTF-8 and UTF-16 characters will be replaced with
+         * substitution characters appropriate for the character encoding.
+         *
+         * If the `buffer` argument is provided, one final call to `stringDecoder.write()`is performed before returning the remaining input.
+         * After `end()` is called, the `stringDecoder` object can be reused for new input.
+         * @since v0.9.3
+         * @param buffer A `Buffer`, or `TypedArray`, or `DataView` containing the bytes to decode.
+         */
+        end(buffer?: Buffer): string;
+    }
+}
+declare module 'node:string_decoder' {
+    export * from 'string_decoder';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/test.d.ts b/igv_component/node_modules/@types/node/ts4.8/test.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..85908ed8576fb11925cee402ea9b753334d48ab5
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/test.d.ts
@@ -0,0 +1,190 @@
+/**
+ * The `node:test` module provides a standalone testing module.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/test.js)
+ */
+declare module 'node:test' {
+    /**
+     * The `test()` function is the value imported from the test module. Each invocation of this
+     * function results in the creation of a test point in the TAP output.
+     *
+     * The {@link TestContext} object passed to the fn argument can be used to perform actions
+     * related to the current test. Examples include skipping the test, adding additional TAP
+     * diagnostic information, or creating subtests.
+     *
+     * `test()` returns a {@link Promise} that resolves once the test completes. The return value
+     * can usually be discarded for top level tests. However, the return value from subtests should
+     * be used to prevent the parent test from finishing first and cancelling the subtest as shown
+     * in the following example.
+     *
+     * ```js
+     * test('top level test', async (t) => {
+     *   // The setTimeout() in the following subtest would cause it to outlive its
+     *   // parent test if 'await' is removed on the next line. Once the parent test
+     *   // completes, it will cancel any outstanding subtests.
+     *   await t.test('longer running subtest', async (t) => {
+     *     return new Promise((resolve, reject) => {
+     *       setTimeout(resolve, 1000);
+     *     });
+     *   });
+     * });
+     * ```
+     * @since v18.0.0
+     * @param name The name of the test, which is displayed when reporting test results.
+     *    Default: The `name` property of fn, or `'<anonymous>'` if `fn` does not have a name.
+     * @param options Configuration options for the test
+     * @param fn The function under test. The first argument to this function is a
+     *    {@link TestContext} object. If the test uses callbacks, the callback function is
+     *    passed as the second argument. Default: A no-op function.
+     * @returns A {@link Promise} resolved with `undefined` once the test completes.
+     */
+    function test(name?: string, fn?: TestFn): Promise<void>;
+    function test(name?: string, options?: TestOptions, fn?: TestFn): Promise<void>;
+    function test(options?: TestOptions, fn?: TestFn): Promise<void>;
+    function test(fn?: TestFn): Promise<void>;
+
+    /*
+     * @since v18.6.0
+     * @param name The name of the suite, which is displayed when reporting suite results.
+     *    Default: The `name` property of fn, or `'<anonymous>'` if `fn` does not have a name.
+     * @param options Configuration options for the suite
+     * @param fn The function under suite. Default: A no-op function.
+     */
+    function describe(name?: string, options?: TestOptions, fn?: SuiteFn): void;
+    function describe(name?: string, fn?: SuiteFn): void;
+    function describe(options?: TestOptions, fn?: SuiteFn): void;
+    function describe(fn?: SuiteFn): void;
+
+    /*
+     * @since v18.6.0
+     * @param name The name of the test, which is displayed when reporting test results.
+     *    Default: The `name` property of fn, or `'<anonymous>'` if `fn` does not have a name.
+     * @param options Configuration options for the test
+     * @param fn The function under test. If the test uses callbacks, the callback function is
+     *    passed as the second argument. Default: A no-op function.
+     */
+    function it(name?: string, options?: TestOptions, fn?: ItFn): void;
+    function it(name?: string, fn?: ItFn): void;
+    function it(options?: TestOptions, fn?: ItFn): void;
+    function it(fn?: ItFn): void;
+
+    /**
+     * The type of a function under test. The first argument to this function is a
+     * {@link TestContext} object. If the test uses callbacks, the callback function is passed as
+     * the second argument.
+     */
+    type TestFn = (t: TestContext, done: (result?: any) => void) => any;
+
+    /**
+     * The type of a function under Suite.
+     * If the test uses callbacks, the callback function is passed as an argument
+     */
+    type SuiteFn = (done: (result?: any) => void) => void;
+
+    /**
+     * The type of a function under test.
+     * If the test uses callbacks, the callback function is passed as an argument
+     */
+    type ItFn = (done: (result?: any) => void) => any;
+
+    /**
+     * An instance of `TestContext` is passed to each test function in order to interact with the
+     * test runner. However, the `TestContext` constructor is not exposed as part of the API.
+     * @since v18.0.0
+     */
+    interface TestContext {
+        /**
+         * This function is used to write TAP diagnostics to the output. Any diagnostic information is
+         * included at the end of the test's results. This function does not return a value.
+         * @param message Message to be displayed as a TAP diagnostic.
+         * @since v18.0.0
+         */
+        diagnostic(message: string): void;
+
+        /**
+         * If `shouldRunOnlyTests` is truthy, the test context will only run tests that have the `only`
+         * option set. Otherwise, all tests are run. If Node.js was not started with the `--test-only`
+         * command-line option, this function is a no-op.
+         * @param shouldRunOnlyTests Whether or not to run `only` tests.
+         * @since v18.0.0
+         */
+        runOnly(shouldRunOnlyTests: boolean): void;
+
+        /**
+         * This function causes the test's output to indicate the test as skipped. If `message` is
+         * provided, it is included in the TAP output. Calling `skip()` does not terminate execution of
+         * the test function. This function does not return a value.
+         * @param message Optional skip message to be displayed in TAP output.
+         * @since v18.0.0
+         */
+        skip(message?: string): void;
+
+        /**
+         * This function adds a `TODO` directive to the test's output. If `message` is provided, it is
+         * included in the TAP output. Calling `todo()` does not terminate execution of the test
+         * function. This function does not return a value.
+         * @param message Optional `TODO` message to be displayed in TAP output.
+         * @since v18.0.0
+         */
+        todo(message?: string): void;
+
+        /**
+         * This function is used to create subtests under the current test. This function behaves in
+         * the same fashion as the top level {@link test} function.
+         * @since v18.0.0
+         * @param name The name of the test, which is displayed when reporting test results.
+         *    Default: The `name` property of fn, or `'<anonymous>'` if `fn` does not have a name.
+         * @param options Configuration options for the test
+         * @param fn The function under test. This first argument to this function is a
+         *    {@link TestContext} object. If the test uses callbacks, the callback function is
+         *    passed as the second argument. Default: A no-op function.
+         * @returns A {@link Promise} resolved with `undefined` once the test completes.
+         */
+        test: typeof test;
+    }
+
+    interface TestOptions {
+        /**
+         * The number of tests that can be run at the same time. If unspecified, subtests inherit this
+         * value from their parent.
+         * @default 1
+         */
+        concurrency?: number;
+
+        /**
+         * If truthy, and the test context is configured to run `only` tests, then this test will be
+         * run. Otherwise, the test is skipped.
+         * @default false
+         */
+        only?: boolean;
+
+        /**
+         * Allows aborting an in-progress test.
+         * @since 8.7.0
+         */
+        signal?: AbortSignal;
+
+        /**
+         * If truthy, the test is skipped. If a string is provided, that string is displayed in the
+         * test results as the reason for skipping the test.
+         * @default false
+         */
+        skip?: boolean | string;
+
+        /**
+         * A number of milliseconds the test will fail after. If unspecified, subtests inherit this
+         * value from their parent.
+         * @default Infinity
+         * @since 8.7.0
+         */
+        timeout?: number;
+
+        /**
+         * If truthy, the test marked as `TODO`. If a string is provided, that string is displayed in
+         * the test results as the reason why the test is `TODO`.
+         * @default false
+         */
+        todo?: boolean | string;
+    }
+
+    export { test as default, test, describe, it };
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/timers.d.ts b/igv_component/node_modules/@types/node/ts4.8/timers.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b26f3cedabff61dd1580a56540f3b911eb9ecfe6
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/timers.d.ts
@@ -0,0 +1,94 @@
+/**
+ * The `timer` module exposes a global API for scheduling functions to
+ * be called at some future period of time. Because the timer functions are
+ * globals, there is no need to call `require('timers')` to use the API.
+ *
+ * The timer functions within Node.js implement a similar API as the timers API
+ * provided by Web Browsers but use a different internal implementation that is
+ * built around the Node.js [Event Loop](https://nodejs.org/en/docs/guides/event-loop-timers-and-nexttick/#setimmediate-vs-settimeout).
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/timers.js)
+ */
+declare module 'timers' {
+    import { Abortable } from 'node:events';
+    import { setTimeout as setTimeoutPromise, setImmediate as setImmediatePromise, setInterval as setIntervalPromise } from 'node:timers/promises';
+    interface TimerOptions extends Abortable {
+        /**
+         * Set to `false` to indicate that the scheduled `Timeout`
+         * should not require the Node.js event loop to remain active.
+         * @default true
+         */
+        ref?: boolean | undefined;
+    }
+    let setTimeout: typeof global.setTimeout;
+    let clearTimeout: typeof global.clearTimeout;
+    let setInterval: typeof global.setInterval;
+    let clearInterval: typeof global.clearInterval;
+    let setImmediate: typeof global.setImmediate;
+    let clearImmediate: typeof global.clearImmediate;
+    global {
+        namespace NodeJS {
+            // compatibility with older typings
+            interface Timer extends RefCounted {
+                hasRef(): boolean;
+                refresh(): this;
+                [Symbol.toPrimitive](): number;
+            }
+            interface Immediate extends RefCounted {
+                /**
+                 * If true, the `Immediate` object will keep the Node.js event loop active.
+                 * @since v11.0.0
+                 */
+                hasRef(): boolean;
+                _onImmediate: Function; // to distinguish it from the Timeout class
+            }
+            interface Timeout extends Timer {
+                /**
+                 * If true, the `Timeout` object will keep the Node.js event loop active.
+                 * @since v11.0.0
+                 */
+                hasRef(): boolean;
+                /**
+                 * Sets the timer's start time to the current time, and reschedules the timer to
+                 * call its callback at the previously specified duration adjusted to the current
+                 * time. This is useful for refreshing a timer without allocating a new
+                 * JavaScript object.
+                 *
+                 * Using this on a timer that has already called its callback will reactivate the
+                 * timer.
+                 * @since v10.2.0
+                 * @return a reference to `timeout`
+                 */
+                refresh(): this;
+                [Symbol.toPrimitive](): number;
+            }
+        }
+        function setTimeout<TArgs extends any[]>(callback: (...args: TArgs) => void, ms?: number, ...args: TArgs): NodeJS.Timeout;
+        // util.promisify no rest args compability
+        // tslint:disable-next-line void-return
+        function setTimeout(callback: (args: void) => void, ms?: number): NodeJS.Timeout;
+        namespace setTimeout {
+            const __promisify__: typeof setTimeoutPromise;
+        }
+        function clearTimeout(timeoutId: NodeJS.Timeout | string | number | undefined): void;
+        function setInterval<TArgs extends any[]>(callback: (...args: TArgs) => void, ms?: number, ...args: TArgs): NodeJS.Timer;
+        // util.promisify no rest args compability
+        // tslint:disable-next-line void-return
+        function setInterval(callback: (args: void) => void, ms?: number): NodeJS.Timer;
+        namespace setInterval {
+            const __promisify__: typeof setIntervalPromise;
+        }
+        function clearInterval(intervalId: NodeJS.Timeout | string | number | undefined): void;
+        function setImmediate<TArgs extends any[]>(callback: (...args: TArgs) => void, ...args: TArgs): NodeJS.Immediate;
+        // util.promisify no rest args compability
+        // tslint:disable-next-line void-return
+        function setImmediate(callback: (args: void) => void): NodeJS.Immediate;
+        namespace setImmediate {
+            const __promisify__: typeof setImmediatePromise;
+        }
+        function clearImmediate(immediateId: NodeJS.Immediate | undefined): void;
+        function queueMicrotask(callback: () => void): void;
+    }
+}
+declare module 'node:timers' {
+    export * from 'timers';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/timers/promises.d.ts b/igv_component/node_modules/@types/node/ts4.8/timers/promises.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..fd778880ef386f4e275ab1e077093fc4c7412c55
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/timers/promises.d.ts
@@ -0,0 +1,68 @@
+/**
+ * The `timers/promises` API provides an alternative set of timer functions
+ * that return `Promise` objects. The API is accessible via`require('timers/promises')`.
+ *
+ * ```js
+ * import {
+ *   setTimeout,
+ *   setImmediate,
+ *   setInterval,
+ * } from 'timers/promises';
+ * ```
+ * @since v15.0.0
+ */
+declare module 'timers/promises' {
+    import { TimerOptions } from 'node:timers';
+    /**
+     * ```js
+     * import {
+     *   setTimeout,
+     * } from 'timers/promises';
+     *
+     * const res = await setTimeout(100, 'result');
+     *
+     * console.log(res);  // Prints 'result'
+     * ```
+     * @since v15.0.0
+     * @param [delay=1] The number of milliseconds to wait before fulfilling the promise.
+     * @param value A value with which the promise is fulfilled.
+     */
+    function setTimeout<T = void>(delay?: number, value?: T, options?: TimerOptions): Promise<T>;
+    /**
+     * ```js
+     * import {
+     *   setImmediate,
+     * } from 'timers/promises';
+     *
+     * const res = await setImmediate('result');
+     *
+     * console.log(res);  // Prints 'result'
+     * ```
+     * @since v15.0.0
+     * @param value A value with which the promise is fulfilled.
+     */
+    function setImmediate<T = void>(value?: T, options?: TimerOptions): Promise<T>;
+    /**
+     * Returns an async iterator that generates values in an interval of `delay` ms.
+     *
+     * ```js
+     * import {
+     *   setInterval,
+     * } from 'timers/promises';
+     *
+     * const interval = 100;
+     * for await (const startTime of setInterval(interval, Date.now())) {
+     *   const now = Date.now();
+     *   console.log(now);
+     *   if ((now - startTime) > 1000)
+     *     break;
+     * }
+     * console.log(Date.now());
+     * ```
+     * @since v15.9.0
+     */
+    function setInterval<T = void>(delay?: number, value?: T, options?: TimerOptions): AsyncIterable<T>;
+}
+declare module 'node:timers/promises' {
+    export * from 'timers/promises';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/tls.d.ts b/igv_component/node_modules/@types/node/ts4.8/tls.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2cbc71658039eced278db4632dd67d7a754b51b6
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/tls.d.ts
@@ -0,0 +1,1028 @@
+/**
+ * The `tls` module provides an implementation of the Transport Layer Security
+ * (TLS) and Secure Socket Layer (SSL) protocols that is built on top of OpenSSL.
+ * The module can be accessed using:
+ *
+ * ```js
+ * const tls = require('tls');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/tls.js)
+ */
+declare module 'tls' {
+    import { X509Certificate } from 'node:crypto';
+    import * as net from 'node:net';
+    import * as stream from 'stream';
+    const CLIENT_RENEG_LIMIT: number;
+    const CLIENT_RENEG_WINDOW: number;
+    interface Certificate {
+        /**
+         * Country code.
+         */
+        C: string;
+        /**
+         * Street.
+         */
+        ST: string;
+        /**
+         * Locality.
+         */
+        L: string;
+        /**
+         * Organization.
+         */
+        O: string;
+        /**
+         * Organizational unit.
+         */
+        OU: string;
+        /**
+         * Common name.
+         */
+        CN: string;
+    }
+    interface PeerCertificate {
+        subject: Certificate;
+        issuer: Certificate;
+        subjectaltname: string;
+        infoAccess: NodeJS.Dict<string[]>;
+        modulus: string;
+        exponent: string;
+        valid_from: string;
+        valid_to: string;
+        fingerprint: string;
+        fingerprint256: string;
+        ext_key_usage: string[];
+        serialNumber: string;
+        raw: Buffer;
+    }
+    interface DetailedPeerCertificate extends PeerCertificate {
+        issuerCertificate: DetailedPeerCertificate;
+    }
+    interface CipherNameAndProtocol {
+        /**
+         * The cipher name.
+         */
+        name: string;
+        /**
+         * SSL/TLS protocol version.
+         */
+        version: string;
+        /**
+         * IETF name for the cipher suite.
+         */
+        standardName: string;
+    }
+    interface EphemeralKeyInfo {
+        /**
+         * The supported types are 'DH' and 'ECDH'.
+         */
+        type: string;
+        /**
+         * The name property is available only when type is 'ECDH'.
+         */
+        name?: string | undefined;
+        /**
+         * The size of parameter of an ephemeral key exchange.
+         */
+        size: number;
+    }
+    interface KeyObject {
+        /**
+         * Private keys in PEM format.
+         */
+        pem: string | Buffer;
+        /**
+         * Optional passphrase.
+         */
+        passphrase?: string | undefined;
+    }
+    interface PxfObject {
+        /**
+         * PFX or PKCS12 encoded private key and certificate chain.
+         */
+        buf: string | Buffer;
+        /**
+         * Optional passphrase.
+         */
+        passphrase?: string | undefined;
+    }
+    interface TLSSocketOptions extends SecureContextOptions, CommonConnectionOptions {
+        /**
+         * If true the TLS socket will be instantiated in server-mode.
+         * Defaults to false.
+         */
+        isServer?: boolean | undefined;
+        /**
+         * An optional net.Server instance.
+         */
+        server?: net.Server | undefined;
+        /**
+         * An optional Buffer instance containing a TLS session.
+         */
+        session?: Buffer | undefined;
+        /**
+         * If true, specifies that the OCSP status request extension will be
+         * added to the client hello and an 'OCSPResponse' event will be
+         * emitted on the socket before establishing a secure communication
+         */
+        requestOCSP?: boolean | undefined;
+    }
+    /**
+     * Performs transparent encryption of written data and all required TLS
+     * negotiation.
+     *
+     * Instances of `tls.TLSSocket` implement the duplex `Stream` interface.
+     *
+     * Methods that return TLS connection metadata (e.g.{@link TLSSocket.getPeerCertificate} will only return data while the
+     * connection is open.
+     * @since v0.11.4
+     */
+    class TLSSocket extends net.Socket {
+        /**
+         * Construct a new tls.TLSSocket object from an existing TCP socket.
+         */
+        constructor(socket: net.Socket, options?: TLSSocketOptions);
+        /**
+         * This property is `true` if the peer certificate was signed by one of the CAs
+         * specified when creating the `tls.TLSSocket` instance, otherwise `false`.
+         * @since v0.11.4
+         */
+        authorized: boolean;
+        /**
+         * Returns the reason why the peer's certificate was not been verified. This
+         * property is set only when `tlsSocket.authorized === false`.
+         * @since v0.11.4
+         */
+        authorizationError: Error;
+        /**
+         * Always returns `true`. This may be used to distinguish TLS sockets from regular`net.Socket` instances.
+         * @since v0.11.4
+         */
+        encrypted: true;
+        /**
+         * String containing the selected ALPN protocol.
+         * Before a handshake has completed, this value is always null.
+         * When a handshake is completed but not ALPN protocol was selected, tlsSocket.alpnProtocol equals false.
+         */
+        alpnProtocol: string | false | null;
+        /**
+         * Returns an object representing the local certificate. The returned object has
+         * some properties corresponding to the fields of the certificate.
+         *
+         * See {@link TLSSocket.getPeerCertificate} for an example of the certificate
+         * structure.
+         *
+         * If there is no local certificate, an empty object will be returned. If the
+         * socket has been destroyed, `null` will be returned.
+         * @since v11.2.0
+         */
+        getCertificate(): PeerCertificate | object | null;
+        /**
+         * Returns an object containing information on the negotiated cipher suite.
+         *
+         * For example:
+         *
+         * ```json
+         * {
+         *     "name": "AES128-SHA256",
+         *     "standardName": "TLS_RSA_WITH_AES_128_CBC_SHA256",
+         *     "version": "TLSv1.2"
+         * }
+         * ```
+         *
+         * See [SSL\_CIPHER\_get\_name](https://www.openssl.org/docs/man1.1.1/man3/SSL_CIPHER_get_name.html) for more information.
+         * @since v0.11.4
+         */
+        getCipher(): CipherNameAndProtocol;
+        /**
+         * Returns an object representing the type, name, and size of parameter of
+         * an ephemeral key exchange in `perfect forward secrecy` on a client
+         * connection. It returns an empty object when the key exchange is not
+         * ephemeral. As this is only supported on a client socket; `null` is returned
+         * if called on a server socket. The supported types are `'DH'` and `'ECDH'`. The`name` property is available only when type is `'ECDH'`.
+         *
+         * For example: `{ type: 'ECDH', name: 'prime256v1', size: 256 }`.
+         * @since v5.0.0
+         */
+        getEphemeralKeyInfo(): EphemeralKeyInfo | object | null;
+        /**
+         * As the `Finished` messages are message digests of the complete handshake
+         * (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
+         * be used for external authentication procedures when the authentication
+         * provided by SSL/TLS is not desired or is not enough.
+         *
+         * Corresponds to the `SSL_get_finished` routine in OpenSSL and may be used
+         * to implement the `tls-unique` channel binding from [RFC 5929](https://tools.ietf.org/html/rfc5929).
+         * @since v9.9.0
+         * @return The latest `Finished` message that has been sent to the socket as part of a SSL/TLS handshake, or `undefined` if no `Finished` message has been sent yet.
+         */
+        getFinished(): Buffer | undefined;
+        /**
+         * Returns an object representing the peer's certificate. If the peer does not
+         * provide a certificate, an empty object will be returned. If the socket has been
+         * destroyed, `null` will be returned.
+         *
+         * If the full certificate chain was requested, each certificate will include an`issuerCertificate` property containing an object representing its issuer's
+         * certificate.
+         * @since v0.11.4
+         * @param detailed Include the full certificate chain if `true`, otherwise include just the peer's certificate.
+         * @return A certificate object.
+         */
+        getPeerCertificate(detailed: true): DetailedPeerCertificate;
+        getPeerCertificate(detailed?: false): PeerCertificate;
+        getPeerCertificate(detailed?: boolean): PeerCertificate | DetailedPeerCertificate;
+        /**
+         * As the `Finished` messages are message digests of the complete handshake
+         * (with a total of 192 bits for TLS 1.0 and more for SSL 3.0), they can
+         * be used for external authentication procedures when the authentication
+         * provided by SSL/TLS is not desired or is not enough.
+         *
+         * Corresponds to the `SSL_get_peer_finished` routine in OpenSSL and may be used
+         * to implement the `tls-unique` channel binding from [RFC 5929](https://tools.ietf.org/html/rfc5929).
+         * @since v9.9.0
+         * @return The latest `Finished` message that is expected or has actually been received from the socket as part of a SSL/TLS handshake, or `undefined` if there is no `Finished` message so
+         * far.
+         */
+        getPeerFinished(): Buffer | undefined;
+        /**
+         * Returns a string containing the negotiated SSL/TLS protocol version of the
+         * current connection. The value `'unknown'` will be returned for connected
+         * sockets that have not completed the handshaking process. The value `null` will
+         * be returned for server sockets or disconnected client sockets.
+         *
+         * Protocol versions are:
+         *
+         * * `'SSLv3'`
+         * * `'TLSv1'`
+         * * `'TLSv1.1'`
+         * * `'TLSv1.2'`
+         * * `'TLSv1.3'`
+         *
+         * See the OpenSSL [`SSL_get_version`](https://www.openssl.org/docs/man1.1.1/man3/SSL_get_version.html) documentation for more information.
+         * @since v5.7.0
+         */
+        getProtocol(): string | null;
+        /**
+         * Returns the TLS session data or `undefined` if no session was
+         * negotiated. On the client, the data can be provided to the `session` option of {@link connect} to resume the connection. On the server, it may be useful
+         * for debugging.
+         *
+         * See `Session Resumption` for more information.
+         *
+         * Note: `getSession()` works only for TLSv1.2 and below. For TLSv1.3, applications
+         * must use the `'session'` event (it also works for TLSv1.2 and below).
+         * @since v0.11.4
+         */
+        getSession(): Buffer | undefined;
+        /**
+         * See [SSL\_get\_shared\_sigalgs](https://www.openssl.org/docs/man1.1.1/man3/SSL_get_shared_sigalgs.html) for more information.
+         * @since v12.11.0
+         * @return List of signature algorithms shared between the server and the client in the order of decreasing preference.
+         */
+        getSharedSigalgs(): string[];
+        /**
+         * For a client, returns the TLS session ticket if one is available, or`undefined`. For a server, always returns `undefined`.
+         *
+         * It may be useful for debugging.
+         *
+         * See `Session Resumption` for more information.
+         * @since v0.11.4
+         */
+        getTLSTicket(): Buffer | undefined;
+        /**
+         * See `Session Resumption` for more information.
+         * @since v0.5.6
+         * @return `true` if the session was reused, `false` otherwise.
+         */
+        isSessionReused(): boolean;
+        /**
+         * The `tlsSocket.renegotiate()` method initiates a TLS renegotiation process.
+         * Upon completion, the `callback` function will be passed a single argument
+         * that is either an `Error` (if the request failed) or `null`.
+         *
+         * This method can be used to request a peer's certificate after the secure
+         * connection has been established.
+         *
+         * When running as the server, the socket will be destroyed with an error after`handshakeTimeout` timeout.
+         *
+         * For TLSv1.3, renegotiation cannot be initiated, it is not supported by the
+         * protocol.
+         * @since v0.11.8
+         * @param callback If `renegotiate()` returned `true`, callback is attached once to the `'secure'` event. If `renegotiate()` returned `false`, `callback` will be called in the next tick with
+         * an error, unless the `tlsSocket` has been destroyed, in which case `callback` will not be called at all.
+         * @return `true` if renegotiation was initiated, `false` otherwise.
+         */
+        renegotiate(
+            options: {
+                rejectUnauthorized?: boolean | undefined;
+                requestCert?: boolean | undefined;
+            },
+            callback: (err: Error | null) => void
+        ): undefined | boolean;
+        /**
+         * The `tlsSocket.setMaxSendFragment()` method sets the maximum TLS fragment size.
+         * Returns `true` if setting the limit succeeded; `false` otherwise.
+         *
+         * Smaller fragment sizes decrease the buffering latency on the client: larger
+         * fragments are buffered by the TLS layer until the entire fragment is received
+         * and its integrity is verified; large fragments can span multiple roundtrips
+         * and their processing can be delayed due to packet loss or reordering. However,
+         * smaller fragments add extra TLS framing bytes and CPU overhead, which may
+         * decrease overall server throughput.
+         * @since v0.11.11
+         * @param [size=16384] The maximum TLS fragment size. The maximum value is `16384`.
+         */
+        setMaxSendFragment(size: number): boolean;
+        /**
+         * Disables TLS renegotiation for this `TLSSocket` instance. Once called, attempts
+         * to renegotiate will trigger an `'error'` event on the `TLSSocket`.
+         * @since v8.4.0
+         */
+        disableRenegotiation(): void;
+        /**
+         * When enabled, TLS packet trace information is written to `stderr`. This can be
+         * used to debug TLS connection problems.
+         *
+         * The format of the output is identical to the output of`openssl s_client -trace` or `openssl s_server -trace`. While it is produced by
+         * OpenSSL's `SSL_trace()` function, the format is undocumented, can change
+         * without notice, and should not be relied on.
+         * @since v12.2.0
+         */
+        enableTrace(): void;
+        /**
+         * Returns the peer certificate as an `X509Certificate` object.
+         *
+         * If there is no peer certificate, or the socket has been destroyed,`undefined` will be returned.
+         * @since v15.9.0
+         */
+        getPeerX509Certificate(): X509Certificate | undefined;
+        /**
+         * Returns the local certificate as an `X509Certificate` object.
+         *
+         * If there is no local certificate, or the socket has been destroyed,`undefined` will be returned.
+         * @since v15.9.0
+         */
+        getX509Certificate(): X509Certificate | undefined;
+        /**
+         * Keying material is used for validations to prevent different kind of attacks in
+         * network protocols, for example in the specifications of IEEE 802.1X.
+         *
+         * Example
+         *
+         * ```js
+         * const keyingMaterial = tlsSocket.exportKeyingMaterial(
+         *   128,
+         *   'client finished');
+         *
+         * /*
+         *  Example return value of keyingMaterial:
+         *  <Buffer 76 26 af 99 c5 56 8e 42 09 91 ef 9f 93 cb ad 6c 7b 65 f8 53 f1 d8 d9
+         *     12 5a 33 b8 b5 25 df 7b 37 9f e0 e2 4f b8 67 83 a3 2f cd 5d 41 42 4c 91
+         *     74 ef 2c ... 78 more bytes>
+         *
+         * ```
+         *
+         * See the OpenSSL [`SSL_export_keying_material`](https://www.openssl.org/docs/man1.1.1/man3/SSL_export_keying_material.html) documentation for more
+         * information.
+         * @since v13.10.0, v12.17.0
+         * @param length number of bytes to retrieve from keying material
+         * @param label an application specific label, typically this will be a value from the [IANA Exporter Label
+         * Registry](https://www.iana.org/assignments/tls-parameters/tls-parameters.xhtml#exporter-labels).
+         * @param context Optionally provide a context.
+         * @return requested bytes of the keying material
+         */
+        exportKeyingMaterial(length: number, label: string, context: Buffer): Buffer;
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'OCSPResponse', listener: (response: Buffer) => void): this;
+        addListener(event: 'secureConnect', listener: () => void): this;
+        addListener(event: 'session', listener: (session: Buffer) => void): this;
+        addListener(event: 'keylog', listener: (line: Buffer) => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'OCSPResponse', response: Buffer): boolean;
+        emit(event: 'secureConnect'): boolean;
+        emit(event: 'session', session: Buffer): boolean;
+        emit(event: 'keylog', line: Buffer): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'OCSPResponse', listener: (response: Buffer) => void): this;
+        on(event: 'secureConnect', listener: () => void): this;
+        on(event: 'session', listener: (session: Buffer) => void): this;
+        on(event: 'keylog', listener: (line: Buffer) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'OCSPResponse', listener: (response: Buffer) => void): this;
+        once(event: 'secureConnect', listener: () => void): this;
+        once(event: 'session', listener: (session: Buffer) => void): this;
+        once(event: 'keylog', listener: (line: Buffer) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'OCSPResponse', listener: (response: Buffer) => void): this;
+        prependListener(event: 'secureConnect', listener: () => void): this;
+        prependListener(event: 'session', listener: (session: Buffer) => void): this;
+        prependListener(event: 'keylog', listener: (line: Buffer) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'OCSPResponse', listener: (response: Buffer) => void): this;
+        prependOnceListener(event: 'secureConnect', listener: () => void): this;
+        prependOnceListener(event: 'session', listener: (session: Buffer) => void): this;
+        prependOnceListener(event: 'keylog', listener: (line: Buffer) => void): this;
+    }
+    interface CommonConnectionOptions {
+        /**
+         * An optional TLS context object from tls.createSecureContext()
+         */
+        secureContext?: SecureContext | undefined;
+        /**
+         * When enabled, TLS packet trace information is written to `stderr`. This can be
+         * used to debug TLS connection problems.
+         * @default false
+         */
+        enableTrace?: boolean | undefined;
+        /**
+         * If true the server will request a certificate from clients that
+         * connect and attempt to verify that certificate. Defaults to
+         * false.
+         */
+        requestCert?: boolean | undefined;
+        /**
+         * An array of strings or a Buffer naming possible ALPN protocols.
+         * (Protocols should be ordered by their priority.)
+         */
+        ALPNProtocols?: string[] | Uint8Array[] | Uint8Array | undefined;
+        /**
+         * SNICallback(servername, cb) <Function> A function that will be
+         * called if the client supports SNI TLS extension. Two arguments
+         * will be passed when called: servername and cb. SNICallback should
+         * invoke cb(null, ctx), where ctx is a SecureContext instance.
+         * (tls.createSecureContext(...) can be used to get a proper
+         * SecureContext.) If SNICallback wasn't provided the default callback
+         * with high-level API will be used (see below).
+         */
+        SNICallback?: ((servername: string, cb: (err: Error | null, ctx?: SecureContext) => void) => void) | undefined;
+        /**
+         * If true the server will reject any connection which is not
+         * authorized with the list of supplied CAs. This option only has an
+         * effect if requestCert is true.
+         * @default true
+         */
+        rejectUnauthorized?: boolean | undefined;
+    }
+    interface TlsOptions extends SecureContextOptions, CommonConnectionOptions, net.ServerOpts {
+        /**
+         * Abort the connection if the SSL/TLS handshake does not finish in the
+         * specified number of milliseconds. A 'tlsClientError' is emitted on
+         * the tls.Server object whenever a handshake times out. Default:
+         * 120000 (120 seconds).
+         */
+        handshakeTimeout?: number | undefined;
+        /**
+         * The number of seconds after which a TLS session created by the
+         * server will no longer be resumable. See Session Resumption for more
+         * information. Default: 300.
+         */
+        sessionTimeout?: number | undefined;
+        /**
+         * 48-bytes of cryptographically strong pseudo-random data.
+         */
+        ticketKeys?: Buffer | undefined;
+        /**
+         *
+         * @param socket
+         * @param identity identity parameter sent from the client.
+         * @return pre-shared key that must either be
+         * a buffer or `null` to stop the negotiation process. Returned PSK must be
+         * compatible with the selected cipher's digest.
+         *
+         * When negotiating TLS-PSK (pre-shared keys), this function is called
+         * with the identity provided by the client.
+         * If the return value is `null` the negotiation process will stop and an
+         * "unknown_psk_identity" alert message will be sent to the other party.
+         * If the server wishes to hide the fact that the PSK identity was not known,
+         * the callback must provide some random data as `psk` to make the connection
+         * fail with "decrypt_error" before negotiation is finished.
+         * PSK ciphers are disabled by default, and using TLS-PSK thus
+         * requires explicitly specifying a cipher suite with the `ciphers` option.
+         * More information can be found in the RFC 4279.
+         */
+        pskCallback?(socket: TLSSocket, identity: string): DataView | NodeJS.TypedArray | null;
+        /**
+         * hint to send to a client to help
+         * with selecting the identity during TLS-PSK negotiation. Will be ignored
+         * in TLS 1.3. Upon failing to set pskIdentityHint `tlsClientError` will be
+         * emitted with `ERR_TLS_PSK_SET_IDENTIY_HINT_FAILED` code.
+         */
+        pskIdentityHint?: string | undefined;
+    }
+    interface PSKCallbackNegotation {
+        psk: DataView | NodeJS.TypedArray;
+        identity: string;
+    }
+    interface ConnectionOptions extends SecureContextOptions, CommonConnectionOptions {
+        host?: string | undefined;
+        port?: number | undefined;
+        path?: string | undefined; // Creates unix socket connection to path. If this option is specified, `host` and `port` are ignored.
+        socket?: stream.Duplex | undefined; // Establish secure connection on a given socket rather than creating a new socket
+        checkServerIdentity?: typeof checkServerIdentity | undefined;
+        servername?: string | undefined; // SNI TLS Extension
+        session?: Buffer | undefined;
+        minDHSize?: number | undefined;
+        lookup?: net.LookupFunction | undefined;
+        timeout?: number | undefined;
+        /**
+         * When negotiating TLS-PSK (pre-shared keys), this function is called
+         * with optional identity `hint` provided by the server or `null`
+         * in case of TLS 1.3 where `hint` was removed.
+         * It will be necessary to provide a custom `tls.checkServerIdentity()`
+         * for the connection as the default one will try to check hostname/IP
+         * of the server against the certificate but that's not applicable for PSK
+         * because there won't be a certificate present.
+         * More information can be found in the RFC 4279.
+         *
+         * @param hint message sent from the server to help client
+         * decide which identity to use during negotiation.
+         * Always `null` if TLS 1.3 is used.
+         * @returns Return `null` to stop the negotiation process. `psk` must be
+         * compatible with the selected cipher's digest.
+         * `identity` must use UTF-8 encoding.
+         */
+        pskCallback?(hint: string | null): PSKCallbackNegotation | null;
+    }
+    /**
+     * Accepts encrypted connections using TLS or SSL.
+     * @since v0.3.2
+     */
+    class Server extends net.Server {
+        constructor(secureConnectionListener?: (socket: TLSSocket) => void);
+        constructor(options: TlsOptions, secureConnectionListener?: (socket: TLSSocket) => void);
+        /**
+         * The `server.addContext()` method adds a secure context that will be used if
+         * the client request's SNI name matches the supplied `hostname` (or wildcard).
+         *
+         * When there are multiple matching contexts, the most recently added one is
+         * used.
+         * @since v0.5.3
+         * @param hostname A SNI host name or wildcard (e.g. `'*'`)
+         * @param context An object containing any of the possible properties from the {@link createSecureContext} `options` arguments (e.g. `key`, `cert`, `ca`, etc).
+         */
+        addContext(hostname: string, context: SecureContextOptions): void;
+        /**
+         * Returns the session ticket keys.
+         *
+         * See `Session Resumption` for more information.
+         * @since v3.0.0
+         * @return A 48-byte buffer containing the session ticket keys.
+         */
+        getTicketKeys(): Buffer;
+        /**
+         * The `server.setSecureContext()` method replaces the secure context of an
+         * existing server. Existing connections to the server are not interrupted.
+         * @since v11.0.0
+         * @param options An object containing any of the possible properties from the {@link createSecureContext} `options` arguments (e.g. `key`, `cert`, `ca`, etc).
+         */
+        setSecureContext(options: SecureContextOptions): void;
+        /**
+         * Sets the session ticket keys.
+         *
+         * Changes to the ticket keys are effective only for future server connections.
+         * Existing or currently pending server connections will use the previous keys.
+         *
+         * See `Session Resumption` for more information.
+         * @since v3.0.0
+         * @param keys A 48-byte buffer containing the session ticket keys.
+         */
+        setTicketKeys(keys: Buffer): void;
+        /**
+         * events.EventEmitter
+         * 1. tlsClientError
+         * 2. newSession
+         * 3. OCSPRequest
+         * 4. resumeSession
+         * 5. secureConnection
+         * 6. keylog
+         */
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'tlsClientError', listener: (err: Error, tlsSocket: TLSSocket) => void): this;
+        addListener(event: 'newSession', listener: (sessionId: Buffer, sessionData: Buffer, callback: () => void) => void): this;
+        addListener(event: 'OCSPRequest', listener: (certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void) => void): this;
+        addListener(event: 'resumeSession', listener: (sessionId: Buffer, callback: (err: Error | null, sessionData: Buffer | null) => void) => void): this;
+        addListener(event: 'secureConnection', listener: (tlsSocket: TLSSocket) => void): this;
+        addListener(event: 'keylog', listener: (line: Buffer, tlsSocket: TLSSocket) => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'tlsClientError', err: Error, tlsSocket: TLSSocket): boolean;
+        emit(event: 'newSession', sessionId: Buffer, sessionData: Buffer, callback: () => void): boolean;
+        emit(event: 'OCSPRequest', certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void): boolean;
+        emit(event: 'resumeSession', sessionId: Buffer, callback: (err: Error | null, sessionData: Buffer | null) => void): boolean;
+        emit(event: 'secureConnection', tlsSocket: TLSSocket): boolean;
+        emit(event: 'keylog', line: Buffer, tlsSocket: TLSSocket): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'tlsClientError', listener: (err: Error, tlsSocket: TLSSocket) => void): this;
+        on(event: 'newSession', listener: (sessionId: Buffer, sessionData: Buffer, callback: () => void) => void): this;
+        on(event: 'OCSPRequest', listener: (certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void) => void): this;
+        on(event: 'resumeSession', listener: (sessionId: Buffer, callback: (err: Error | null, sessionData: Buffer | null) => void) => void): this;
+        on(event: 'secureConnection', listener: (tlsSocket: TLSSocket) => void): this;
+        on(event: 'keylog', listener: (line: Buffer, tlsSocket: TLSSocket) => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'tlsClientError', listener: (err: Error, tlsSocket: TLSSocket) => void): this;
+        once(event: 'newSession', listener: (sessionId: Buffer, sessionData: Buffer, callback: () => void) => void): this;
+        once(event: 'OCSPRequest', listener: (certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void) => void): this;
+        once(event: 'resumeSession', listener: (sessionId: Buffer, callback: (err: Error | null, sessionData: Buffer | null) => void) => void): this;
+        once(event: 'secureConnection', listener: (tlsSocket: TLSSocket) => void): this;
+        once(event: 'keylog', listener: (line: Buffer, tlsSocket: TLSSocket) => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'tlsClientError', listener: (err: Error, tlsSocket: TLSSocket) => void): this;
+        prependListener(event: 'newSession', listener: (sessionId: Buffer, sessionData: Buffer, callback: () => void) => void): this;
+        prependListener(event: 'OCSPRequest', listener: (certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void) => void): this;
+        prependListener(event: 'resumeSession', listener: (sessionId: Buffer, callback: (err: Error | null, sessionData: Buffer | null) => void) => void): this;
+        prependListener(event: 'secureConnection', listener: (tlsSocket: TLSSocket) => void): this;
+        prependListener(event: 'keylog', listener: (line: Buffer, tlsSocket: TLSSocket) => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'tlsClientError', listener: (err: Error, tlsSocket: TLSSocket) => void): this;
+        prependOnceListener(event: 'newSession', listener: (sessionId: Buffer, sessionData: Buffer, callback: () => void) => void): this;
+        prependOnceListener(event: 'OCSPRequest', listener: (certificate: Buffer, issuer: Buffer, callback: (err: Error | null, resp: Buffer) => void) => void): this;
+        prependOnceListener(event: 'resumeSession', listener: (sessionId: Buffer, callback: (err: Error | null, sessionData: Buffer | null) => void) => void): this;
+        prependOnceListener(event: 'secureConnection', listener: (tlsSocket: TLSSocket) => void): this;
+        prependOnceListener(event: 'keylog', listener: (line: Buffer, tlsSocket: TLSSocket) => void): this;
+    }
+    /**
+     * @deprecated since v0.11.3 Use `tls.TLSSocket` instead.
+     */
+    interface SecurePair {
+        encrypted: TLSSocket;
+        cleartext: TLSSocket;
+    }
+    type SecureVersion = 'TLSv1.3' | 'TLSv1.2' | 'TLSv1.1' | 'TLSv1';
+    interface SecureContextOptions {
+        /**
+         * Optionally override the trusted CA certificates. Default is to trust
+         * the well-known CAs curated by Mozilla. Mozilla's CAs are completely
+         * replaced when CAs are explicitly specified using this option.
+         */
+        ca?: string | Buffer | Array<string | Buffer> | undefined;
+        /**
+         *  Cert chains in PEM format. One cert chain should be provided per
+         *  private key. Each cert chain should consist of the PEM formatted
+         *  certificate for a provided private key, followed by the PEM
+         *  formatted intermediate certificates (if any), in order, and not
+         *  including the root CA (the root CA must be pre-known to the peer,
+         *  see ca). When providing multiple cert chains, they do not have to
+         *  be in the same order as their private keys in key. If the
+         *  intermediate certificates are not provided, the peer will not be
+         *  able to validate the certificate, and the handshake will fail.
+         */
+        cert?: string | Buffer | Array<string | Buffer> | undefined;
+        /**
+         *  Colon-separated list of supported signature algorithms. The list
+         *  can contain digest algorithms (SHA256, MD5 etc.), public key
+         *  algorithms (RSA-PSS, ECDSA etc.), combination of both (e.g
+         *  'RSA+SHA384') or TLS v1.3 scheme names (e.g. rsa_pss_pss_sha512).
+         */
+        sigalgs?: string | undefined;
+        /**
+         * Cipher suite specification, replacing the default. For more
+         * information, see modifying the default cipher suite. Permitted
+         * ciphers can be obtained via tls.getCiphers(). Cipher names must be
+         * uppercased in order for OpenSSL to accept them.
+         */
+        ciphers?: string | undefined;
+        /**
+         * Name of an OpenSSL engine which can provide the client certificate.
+         */
+        clientCertEngine?: string | undefined;
+        /**
+         * PEM formatted CRLs (Certificate Revocation Lists).
+         */
+        crl?: string | Buffer | Array<string | Buffer> | undefined;
+        /**
+         * Diffie Hellman parameters, required for Perfect Forward Secrecy. Use
+         * openssl dhparam to create the parameters. The key length must be
+         * greater than or equal to 1024 bits or else an error will be thrown.
+         * Although 1024 bits is permissible, use 2048 bits or larger for
+         * stronger security. If omitted or invalid, the parameters are
+         * silently discarded and DHE ciphers will not be available.
+         */
+        dhparam?: string | Buffer | undefined;
+        /**
+         * A string describing a named curve or a colon separated list of curve
+         * NIDs or names, for example P-521:P-384:P-256, to use for ECDH key
+         * agreement. Set to auto to select the curve automatically. Use
+         * crypto.getCurves() to obtain a list of available curve names. On
+         * recent releases, openssl ecparam -list_curves will also display the
+         * name and description of each available elliptic curve. Default:
+         * tls.DEFAULT_ECDH_CURVE.
+         */
+        ecdhCurve?: string | undefined;
+        /**
+         * Attempt to use the server's cipher suite preferences instead of the
+         * client's. When true, causes SSL_OP_CIPHER_SERVER_PREFERENCE to be
+         * set in secureOptions
+         */
+        honorCipherOrder?: boolean | undefined;
+        /**
+         * Private keys in PEM format. PEM allows the option of private keys
+         * being encrypted. Encrypted keys will be decrypted with
+         * options.passphrase. Multiple keys using different algorithms can be
+         * provided either as an array of unencrypted key strings or buffers,
+         * or an array of objects in the form {pem: <string|buffer>[,
+         * passphrase: <string>]}. The object form can only occur in an array.
+         * object.passphrase is optional. Encrypted keys will be decrypted with
+         * object.passphrase if provided, or options.passphrase if it is not.
+         */
+        key?: string | Buffer | Array<string | Buffer | KeyObject> | undefined;
+        /**
+         * Name of an OpenSSL engine to get private key from. Should be used
+         * together with privateKeyIdentifier.
+         */
+        privateKeyEngine?: string | undefined;
+        /**
+         * Identifier of a private key managed by an OpenSSL engine. Should be
+         * used together with privateKeyEngine. Should not be set together with
+         * key, because both options define a private key in different ways.
+         */
+        privateKeyIdentifier?: string | undefined;
+        /**
+         * Optionally set the maximum TLS version to allow. One
+         * of `'TLSv1.3'`, `'TLSv1.2'`, `'TLSv1.1'`, or `'TLSv1'`. Cannot be specified along with the
+         * `secureProtocol` option, use one or the other.
+         * **Default:** `'TLSv1.3'`, unless changed using CLI options. Using
+         * `--tls-max-v1.2` sets the default to `'TLSv1.2'`. Using `--tls-max-v1.3` sets the default to
+         * `'TLSv1.3'`. If multiple of the options are provided, the highest maximum is used.
+         */
+        maxVersion?: SecureVersion | undefined;
+        /**
+         * Optionally set the minimum TLS version to allow. One
+         * of `'TLSv1.3'`, `'TLSv1.2'`, `'TLSv1.1'`, or `'TLSv1'`. Cannot be specified along with the
+         * `secureProtocol` option, use one or the other.  It is not recommended to use
+         * less than TLSv1.2, but it may be required for interoperability.
+         * **Default:** `'TLSv1.2'`, unless changed using CLI options. Using
+         * `--tls-v1.0` sets the default to `'TLSv1'`. Using `--tls-v1.1` sets the default to
+         * `'TLSv1.1'`. Using `--tls-min-v1.3` sets the default to
+         * 'TLSv1.3'. If multiple of the options are provided, the lowest minimum is used.
+         */
+        minVersion?: SecureVersion | undefined;
+        /**
+         * Shared passphrase used for a single private key and/or a PFX.
+         */
+        passphrase?: string | undefined;
+        /**
+         * PFX or PKCS12 encoded private key and certificate chain. pfx is an
+         * alternative to providing key and cert individually. PFX is usually
+         * encrypted, if it is, passphrase will be used to decrypt it. Multiple
+         * PFX can be provided either as an array of unencrypted PFX buffers,
+         * or an array of objects in the form {buf: <string|buffer>[,
+         * passphrase: <string>]}. The object form can only occur in an array.
+         * object.passphrase is optional. Encrypted PFX will be decrypted with
+         * object.passphrase if provided, or options.passphrase if it is not.
+         */
+        pfx?: string | Buffer | Array<string | Buffer | PxfObject> | undefined;
+        /**
+         * Optionally affect the OpenSSL protocol behavior, which is not
+         * usually necessary. This should be used carefully if at all! Value is
+         * a numeric bitmask of the SSL_OP_* options from OpenSSL Options
+         */
+        secureOptions?: number | undefined; // Value is a numeric bitmask of the `SSL_OP_*` options
+        /**
+         * Legacy mechanism to select the TLS protocol version to use, it does
+         * not support independent control of the minimum and maximum version,
+         * and does not support limiting the protocol to TLSv1.3. Use
+         * minVersion and maxVersion instead. The possible values are listed as
+         * SSL_METHODS, use the function names as strings. For example, use
+         * 'TLSv1_1_method' to force TLS version 1.1, or 'TLS_method' to allow
+         * any TLS protocol version up to TLSv1.3. It is not recommended to use
+         * TLS versions less than 1.2, but it may be required for
+         * interoperability. Default: none, see minVersion.
+         */
+        secureProtocol?: string | undefined;
+        /**
+         * Opaque identifier used by servers to ensure session state is not
+         * shared between applications. Unused by clients.
+         */
+        sessionIdContext?: string | undefined;
+        /**
+         * 48-bytes of cryptographically strong pseudo-random data.
+         * See Session Resumption for more information.
+         */
+        ticketKeys?: Buffer | undefined;
+        /**
+         * The number of seconds after which a TLS session created by the
+         * server will no longer be resumable. See Session Resumption for more
+         * information. Default: 300.
+         */
+        sessionTimeout?: number | undefined;
+    }
+    interface SecureContext {
+        context: any;
+    }
+    /**
+     * Verifies the certificate `cert` is issued to `hostname`.
+     *
+     * Returns [Error](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Error) object, populating it with `reason`, `host`, and `cert` on
+     * failure. On success, returns [undefined](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Data_structures#Undefined_type).
+     *
+     * This function is intended to be used in combination with the`checkServerIdentity` option that can be passed to {@link connect} and as
+     * such operates on a `certificate object`. For other purposes, consider using `x509.checkHost()` instead.
+     *
+     * This function can be overwritten by providing an alternative function as the`options.checkServerIdentity` option that is passed to `tls.connect()`. The
+     * overwriting function can call `tls.checkServerIdentity()` of course, to augment
+     * the checks done with additional verification.
+     *
+     * This function is only called if the certificate passed all other checks, such as
+     * being issued by trusted CA (`options.ca`).
+     *
+     * Earlier versions of Node.js incorrectly accepted certificates for a given`hostname` if a matching `uniformResourceIdentifier` subject alternative name
+     * was present (see [CVE-2021-44531](https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-44531)). Applications that wish to accept`uniformResourceIdentifier` subject alternative names can use
+     * a custom`options.checkServerIdentity` function that implements the desired behavior.
+     * @since v0.8.4
+     * @param hostname The host name or IP address to verify the certificate against.
+     * @param cert A `certificate object` representing the peer's certificate.
+     */
+    function checkServerIdentity(hostname: string, cert: PeerCertificate): Error | undefined;
+    /**
+     * Creates a new {@link Server}. The `secureConnectionListener`, if provided, is
+     * automatically set as a listener for the `'secureConnection'` event.
+     *
+     * The `ticketKeys` options is automatically shared between `cluster` module
+     * workers.
+     *
+     * The following illustrates a simple echo server:
+     *
+     * ```js
+     * const tls = require('tls');
+     * const fs = require('fs');
+     *
+     * const options = {
+     *   key: fs.readFileSync('server-key.pem'),
+     *   cert: fs.readFileSync('server-cert.pem'),
+     *
+     *   // This is necessary only if using client certificate authentication.
+     *   requestCert: true,
+     *
+     *   // This is necessary only if the client uses a self-signed certificate.
+     *   ca: [ fs.readFileSync('client-cert.pem') ]
+     * };
+     *
+     * const server = tls.createServer(options, (socket) => {
+     *   console.log('server connected',
+     *               socket.authorized ? 'authorized' : 'unauthorized');
+     *   socket.write('welcome!\n');
+     *   socket.setEncoding('utf8');
+     *   socket.pipe(socket);
+     * });
+     * server.listen(8000, () => {
+     *   console.log('server bound');
+     * });
+     * ```
+     *
+     * The server can be tested by connecting to it using the example client from {@link connect}.
+     * @since v0.3.2
+     */
+    function createServer(secureConnectionListener?: (socket: TLSSocket) => void): Server;
+    function createServer(options: TlsOptions, secureConnectionListener?: (socket: TLSSocket) => void): Server;
+    /**
+     * The `callback` function, if specified, will be added as a listener for the `'secureConnect'` event.
+     *
+     * `tls.connect()` returns a {@link TLSSocket} object.
+     *
+     * Unlike the `https` API, `tls.connect()` does not enable the
+     * SNI (Server Name Indication) extension by default, which may cause some
+     * servers to return an incorrect certificate or reject the connection
+     * altogether. To enable SNI, set the `servername` option in addition
+     * to `host`.
+     *
+     * The following illustrates a client for the echo server example from {@link createServer}:
+     *
+     * ```js
+     * // Assumes an echo server that is listening on port 8000.
+     * const tls = require('tls');
+     * const fs = require('fs');
+     *
+     * const options = {
+     *   // Necessary only if the server requires client certificate authentication.
+     *   key: fs.readFileSync('client-key.pem'),
+     *   cert: fs.readFileSync('client-cert.pem'),
+     *
+     *   // Necessary only if the server uses a self-signed certificate.
+     *   ca: [ fs.readFileSync('server-cert.pem') ],
+     *
+     *   // Necessary only if the server's cert isn't for "localhost".
+     *   checkServerIdentity: () => { return null; },
+     * };
+     *
+     * const socket = tls.connect(8000, options, () => {
+     *   console.log('client connected',
+     *               socket.authorized ? 'authorized' : 'unauthorized');
+     *   process.stdin.pipe(socket);
+     *   process.stdin.resume();
+     * });
+     * socket.setEncoding('utf8');
+     * socket.on('data', (data) => {
+     *   console.log(data);
+     * });
+     * socket.on('end', () => {
+     *   console.log('server ends connection');
+     * });
+     * ```
+     * @since v0.11.3
+     */
+    function connect(options: ConnectionOptions, secureConnectListener?: () => void): TLSSocket;
+    function connect(port: number, host?: string, options?: ConnectionOptions, secureConnectListener?: () => void): TLSSocket;
+    function connect(port: number, options?: ConnectionOptions, secureConnectListener?: () => void): TLSSocket;
+    /**
+     * Creates a new secure pair object with two streams, one of which reads and writes
+     * the encrypted data and the other of which reads and writes the cleartext data.
+     * Generally, the encrypted stream is piped to/from an incoming encrypted data
+     * stream and the cleartext one is used as a replacement for the initial encrypted
+     * stream.
+     *
+     * `tls.createSecurePair()` returns a `tls.SecurePair` object with `cleartext` and`encrypted` stream properties.
+     *
+     * Using `cleartext` has the same API as {@link TLSSocket}.
+     *
+     * The `tls.createSecurePair()` method is now deprecated in favor of`tls.TLSSocket()`. For example, the code:
+     *
+     * ```js
+     * pair = tls.createSecurePair(// ... );
+     * pair.encrypted.pipe(socket);
+     * socket.pipe(pair.encrypted);
+     * ```
+     *
+     * can be replaced by:
+     *
+     * ```js
+     * secureSocket = tls.TLSSocket(socket, options);
+     * ```
+     *
+     * where `secureSocket` has the same API as `pair.cleartext`.
+     * @since v0.3.2
+     * @deprecated Since v0.11.3 - Use {@link TLSSocket} instead.
+     * @param context A secure context object as returned by `tls.createSecureContext()`
+     * @param isServer `true` to specify that this TLS connection should be opened as a server.
+     * @param requestCert `true` to specify whether a server should request a certificate from a connecting client. Only applies when `isServer` is `true`.
+     * @param rejectUnauthorized If not `false` a server automatically reject clients with invalid certificates. Only applies when `isServer` is `true`.
+     */
+    function createSecurePair(context?: SecureContext, isServer?: boolean, requestCert?: boolean, rejectUnauthorized?: boolean): SecurePair;
+    /**
+     * {@link createServer} sets the default value of the `honorCipherOrder` option
+     * to `true`, other APIs that create secure contexts leave it unset.
+     *
+     * {@link createServer} uses a 128 bit truncated SHA1 hash value generated
+     * from `process.argv` as the default value of the `sessionIdContext` option, other
+     * APIs that create secure contexts have no default value.
+     *
+     * The `tls.createSecureContext()` method creates a `SecureContext` object. It is
+     * usable as an argument to several `tls` APIs, such as {@link createServer} and `server.addContext()`, but has no public methods.
+     *
+     * A key is _required_ for ciphers that use certificates. Either `key` or`pfx` can be used to provide it.
+     *
+     * If the `ca` option is not given, then Node.js will default to using [Mozilla's publicly trusted list of
+     * CAs](https://hg.mozilla.org/mozilla-central/raw-file/tip/security/nss/lib/ckfw/builtins/certdata.txt).
+     * @since v0.11.13
+     */
+    function createSecureContext(options?: SecureContextOptions): SecureContext;
+    /**
+     * Returns an array with the names of the supported TLS ciphers. The names are
+     * lower-case for historical reasons, but must be uppercased to be used in
+     * the `ciphers` option of {@link createSecureContext}.
+     *
+     * Not all supported ciphers are enabled by default. See `Modifying the default TLS cipher suite`.
+     *
+     * Cipher names that start with `'tls_'` are for TLSv1.3, all the others are for
+     * TLSv1.2 and below.
+     *
+     * ```js
+     * console.log(tls.getCiphers()); // ['aes128-gcm-sha256', 'aes128-sha', ...]
+     * ```
+     * @since v0.10.2
+     */
+    function getCiphers(): string[];
+    /**
+     * The default curve name to use for ECDH key agreement in a tls server.
+     * The default value is 'auto'. See tls.createSecureContext() for further
+     * information.
+     */
+    let DEFAULT_ECDH_CURVE: string;
+    /**
+     * The default value of the maxVersion option of
+     * tls.createSecureContext(). It can be assigned any of the supported TLS
+     * protocol versions, 'TLSv1.3', 'TLSv1.2', 'TLSv1.1', or 'TLSv1'. Default:
+     * 'TLSv1.3', unless changed using CLI options. Using --tls-max-v1.2 sets
+     * the default to 'TLSv1.2'. Using --tls-max-v1.3 sets the default to
+     * 'TLSv1.3'. If multiple of the options are provided, the highest maximum
+     * is used.
+     */
+    let DEFAULT_MAX_VERSION: SecureVersion;
+    /**
+     * The default value of the minVersion option of tls.createSecureContext().
+     * It can be assigned any of the supported TLS protocol versions,
+     * 'TLSv1.3', 'TLSv1.2', 'TLSv1.1', or 'TLSv1'. Default: 'TLSv1.2', unless
+     * changed using CLI options. Using --tls-min-v1.0 sets the default to
+     * 'TLSv1'. Using --tls-min-v1.1 sets the default to 'TLSv1.1'. Using
+     * --tls-min-v1.3 sets the default to 'TLSv1.3'. If multiple of the options
+     * are provided, the lowest minimum is used.
+     */
+    let DEFAULT_MIN_VERSION: SecureVersion;
+    /**
+     * An immutable array of strings representing the root certificates (in PEM
+     * format) used for verifying peer certificates. This is the default value
+     * of the ca option to tls.createSecureContext().
+     */
+    const rootCertificates: ReadonlyArray<string>;
+}
+declare module 'node:tls' {
+    export * from 'tls';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/trace_events.d.ts b/igv_component/node_modules/@types/node/ts4.8/trace_events.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d47aa9311ec85754ce71d1ee64c8b3bb9f509b20
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/trace_events.d.ts
@@ -0,0 +1,171 @@
+/**
+ * The `trace_events` module provides a mechanism to centralize tracing information
+ * generated by V8, Node.js core, and userspace code.
+ *
+ * Tracing can be enabled with the `--trace-event-categories` command-line flag
+ * or by using the `trace_events` module. The `--trace-event-categories` flag
+ * accepts a list of comma-separated category names.
+ *
+ * The available categories are:
+ *
+ * * `node`: An empty placeholder.
+ * * `node.async_hooks`: Enables capture of detailed `async_hooks` trace data.
+ * The `async_hooks` events have a unique `asyncId` and a special `triggerId` `triggerAsyncId` property.
+ * * `node.bootstrap`: Enables capture of Node.js bootstrap milestones.
+ * * `node.console`: Enables capture of `console.time()` and `console.count()`output.
+ * * `node.dns.native`: Enables capture of trace data for DNS queries.
+ * * `node.environment`: Enables capture of Node.js Environment milestones.
+ * * `node.fs.sync`: Enables capture of trace data for file system sync methods.
+ * * `node.perf`: Enables capture of `Performance API` measurements.
+ *    * `node.perf.usertiming`: Enables capture of only Performance API User Timing
+ *    measures and marks.
+ *    * `node.perf.timerify`: Enables capture of only Performance API timerify
+ *    measurements.
+ * * `node.promises.rejections`: Enables capture of trace data tracking the number
+ * of unhandled Promise rejections and handled-after-rejections.
+ * * `node.vm.script`: Enables capture of trace data for the `vm` module's`runInNewContext()`, `runInContext()`, and `runInThisContext()` methods.
+ * * `v8`: The `V8` events are GC, compiling, and execution related.
+ *
+ * By default the `node`, `node.async_hooks`, and `v8` categories are enabled.
+ *
+ * ```bash
+ * node --trace-event-categories v8,node,node.async_hooks server.js
+ * ```
+ *
+ * Prior versions of Node.js required the use of the `--trace-events-enabled`flag to enable trace events. This requirement has been removed. However, the`--trace-events-enabled` flag _may_ still be
+ * used and will enable the`node`, `node.async_hooks`, and `v8` trace event categories by default.
+ *
+ * ```bash
+ * node --trace-events-enabled
+ *
+ * # is equivalent to
+ *
+ * node --trace-event-categories v8,node,node.async_hooks
+ * ```
+ *
+ * Alternatively, trace events may be enabled using the `trace_events` module:
+ *
+ * ```js
+ * const trace_events = require('trace_events');
+ * const tracing = trace_events.createTracing({ categories: ['node.perf'] });
+ * tracing.enable();  // Enable trace event capture for the 'node.perf' category
+ *
+ * // do work
+ *
+ * tracing.disable();  // Disable trace event capture for the 'node.perf' category
+ * ```
+ *
+ * Running Node.js with tracing enabled will produce log files that can be opened
+ * in the [`chrome://tracing`](https://www.chromium.org/developers/how-tos/trace-event-profiling-tool) tab of Chrome.
+ *
+ * The logging file is by default called `node_trace.${rotation}.log`, where`${rotation}` is an incrementing log-rotation id. The filepath pattern can
+ * be specified with `--trace-event-file-pattern` that accepts a template
+ * string that supports `${rotation}` and `${pid}`:
+ *
+ * ```bash
+ * node --trace-event-categories v8 --trace-event-file-pattern '${pid}-${rotation}.log' server.js
+ * ```
+ *
+ * To guarantee that the log file is properly generated after signal events like`SIGINT`, `SIGTERM`, or `SIGBREAK`, make sure to have the appropriate handlers
+ * in your code, such as:
+ *
+ * ```js
+ * process.on('SIGINT', function onSigint() {
+ *   console.info('Received SIGINT.');
+ *   process.exit(130);  // Or applicable exit code depending on OS and signal
+ * });
+ * ```
+ *
+ * The tracing system uses the same time source
+ * as the one used by `process.hrtime()`.
+ * However the trace-event timestamps are expressed in microseconds,
+ * unlike `process.hrtime()` which returns nanoseconds.
+ *
+ * The features from this module are not available in `Worker` threads.
+ * @experimental
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/trace_events.js)
+ */
+declare module 'trace_events' {
+    /**
+     * The `Tracing` object is used to enable or disable tracing for sets of
+     * categories. Instances are created using the
+     * `trace_events.createTracing()` method.
+     *
+     * When created, the `Tracing` object is disabled. Calling the
+     * `tracing.enable()` method adds the categories to the set of enabled trace
+     * event categories. Calling `tracing.disable()` will remove the categories
+     * from the set of enabled trace event categories.
+     */
+    interface Tracing {
+        /**
+         * A comma-separated list of the trace event categories covered by this
+         * `Tracing` object.
+         */
+        readonly categories: string;
+        /**
+         * Disables this `Tracing` object.
+         *
+         * Only trace event categories _not_ covered by other enabled `Tracing`
+         * objects and _not_ specified by the `--trace-event-categories` flag
+         * will be disabled.
+         */
+        disable(): void;
+        /**
+         * Enables this `Tracing` object for the set of categories covered by
+         * the `Tracing` object.
+         */
+        enable(): void;
+        /**
+         * `true` only if the `Tracing` object has been enabled.
+         */
+        readonly enabled: boolean;
+    }
+    interface CreateTracingOptions {
+        /**
+         * An array of trace category names. Values included in the array are
+         * coerced to a string when possible. An error will be thrown if the
+         * value cannot be coerced.
+         */
+        categories: string[];
+    }
+    /**
+     * Creates and returns a `Tracing` object for the given set of `categories`.
+     *
+     * ```js
+     * const trace_events = require('trace_events');
+     * const categories = ['node.perf', 'node.async_hooks'];
+     * const tracing = trace_events.createTracing({ categories });
+     * tracing.enable();
+     * // do stuff
+     * tracing.disable();
+     * ```
+     * @since v10.0.0
+     * @return .
+     */
+    function createTracing(options: CreateTracingOptions): Tracing;
+    /**
+     * Returns a comma-separated list of all currently-enabled trace event
+     * categories. The current set of enabled trace event categories is determined
+     * by the _union_ of all currently-enabled `Tracing` objects and any categories
+     * enabled using the `--trace-event-categories` flag.
+     *
+     * Given the file `test.js` below, the command`node --trace-event-categories node.perf test.js` will print`'node.async_hooks,node.perf'` to the console.
+     *
+     * ```js
+     * const trace_events = require('trace_events');
+     * const t1 = trace_events.createTracing({ categories: ['node.async_hooks'] });
+     * const t2 = trace_events.createTracing({ categories: ['node.perf'] });
+     * const t3 = trace_events.createTracing({ categories: ['v8'] });
+     *
+     * t1.enable();
+     * t2.enable();
+     *
+     * console.log(trace_events.getEnabledCategories());
+     * ```
+     * @since v10.0.0
+     */
+    function getEnabledCategories(): string | undefined;
+}
+declare module 'node:trace_events' {
+    export * from 'trace_events';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/tty.d.ts b/igv_component/node_modules/@types/node/ts4.8/tty.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6473f8db7c69ea519bbb6e6450fb2d236f8a1674
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/tty.d.ts
@@ -0,0 +1,206 @@
+/**
+ * The `tty` module provides the `tty.ReadStream` and `tty.WriteStream` classes.
+ * In most cases, it will not be necessary or possible to use this module directly.
+ * However, it can be accessed using:
+ *
+ * ```js
+ * const tty = require('tty');
+ * ```
+ *
+ * When Node.js detects that it is being run with a text terminal ("TTY")
+ * attached, `process.stdin` will, by default, be initialized as an instance of`tty.ReadStream` and both `process.stdout` and `process.stderr` will, by
+ * default, be instances of `tty.WriteStream`. The preferred method of determining
+ * whether Node.js is being run within a TTY context is to check that the value of
+ * the `process.stdout.isTTY` property is `true`:
+ *
+ * ```console
+ * $ node -p -e "Boolean(process.stdout.isTTY)"
+ * true
+ * $ node -p -e "Boolean(process.stdout.isTTY)" | cat
+ * false
+ * ```
+ *
+ * In most cases, there should be little to no reason for an application to
+ * manually create instances of the `tty.ReadStream` and `tty.WriteStream`classes.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/tty.js)
+ */
+declare module 'tty' {
+    import * as net from 'node:net';
+    /**
+     * The `tty.isatty()` method returns `true` if the given `fd` is associated with
+     * a TTY and `false` if it is not, including whenever `fd` is not a non-negative
+     * integer.
+     * @since v0.5.8
+     * @param fd A numeric file descriptor
+     */
+    function isatty(fd: number): boolean;
+    /**
+     * Represents the readable side of a TTY. In normal circumstances `process.stdin` will be the only `tty.ReadStream` instance in a Node.js
+     * process and there should be no reason to create additional instances.
+     * @since v0.5.8
+     */
+    class ReadStream extends net.Socket {
+        constructor(fd: number, options?: net.SocketConstructorOpts);
+        /**
+         * A `boolean` that is `true` if the TTY is currently configured to operate as a
+         * raw device. Defaults to `false`.
+         * @since v0.7.7
+         */
+        isRaw: boolean;
+        /**
+         * Allows configuration of `tty.ReadStream` so that it operates as a raw device.
+         *
+         * When in raw mode, input is always available character-by-character, not
+         * including modifiers. Additionally, all special processing of characters by the
+         * terminal is disabled, including echoing input
+         * characters. Ctrl+C will no longer cause a `SIGINT` when
+         * in this mode.
+         * @since v0.7.7
+         * @param mode If `true`, configures the `tty.ReadStream` to operate as a raw device. If `false`, configures the `tty.ReadStream` to operate in its default mode. The `readStream.isRaw`
+         * property will be set to the resulting mode.
+         * @return The read stream instance.
+         */
+        setRawMode(mode: boolean): this;
+        /**
+         * A `boolean` that is always `true` for `tty.ReadStream` instances.
+         * @since v0.5.8
+         */
+        isTTY: boolean;
+    }
+    /**
+     * -1 - to the left from cursor
+     *  0 - the entire line
+     *  1 - to the right from cursor
+     */
+    type Direction = -1 | 0 | 1;
+    /**
+     * Represents the writable side of a TTY. In normal circumstances,`process.stdout` and `process.stderr` will be the only`tty.WriteStream` instances created for a Node.js process and there
+     * should be no reason to create additional instances.
+     * @since v0.5.8
+     */
+    class WriteStream extends net.Socket {
+        constructor(fd: number);
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'resize', listener: () => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'resize'): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'resize', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'resize', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'resize', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'resize', listener: () => void): this;
+        /**
+         * `writeStream.clearLine()` clears the current line of this `WriteStream` in a
+         * direction identified by `dir`.
+         * @since v0.7.7
+         * @param callback Invoked once the operation completes.
+         * @return `false` if the stream wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+         */
+        clearLine(dir: Direction, callback?: () => void): boolean;
+        /**
+         * `writeStream.clearScreenDown()` clears this `WriteStream` from the current
+         * cursor down.
+         * @since v0.7.7
+         * @param callback Invoked once the operation completes.
+         * @return `false` if the stream wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+         */
+        clearScreenDown(callback?: () => void): boolean;
+        /**
+         * `writeStream.cursorTo()` moves this `WriteStream`'s cursor to the specified
+         * position.
+         * @since v0.7.7
+         * @param callback Invoked once the operation completes.
+         * @return `false` if the stream wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+         */
+        cursorTo(x: number, y?: number, callback?: () => void): boolean;
+        cursorTo(x: number, callback: () => void): boolean;
+        /**
+         * `writeStream.moveCursor()` moves this `WriteStream`'s cursor _relative_ to its
+         * current position.
+         * @since v0.7.7
+         * @param callback Invoked once the operation completes.
+         * @return `false` if the stream wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+         */
+        moveCursor(dx: number, dy: number, callback?: () => void): boolean;
+        /**
+         * Returns:
+         *
+         * * `1` for 2,
+         * * `4` for 16,
+         * * `8` for 256,
+         * * `24` for 16,777,216 colors supported.
+         *
+         * Use this to determine what colors the terminal supports. Due to the nature of
+         * colors in terminals it is possible to either have false positives or false
+         * negatives. It depends on process information and the environment variables that
+         * may lie about what terminal is used.
+         * It is possible to pass in an `env` object to simulate the usage of a specific
+         * terminal. This can be useful to check how specific environment settings behave.
+         *
+         * To enforce a specific color support, use one of the below environment settings.
+         *
+         * * 2 colors: `FORCE_COLOR = 0` (Disables colors)
+         * * 16 colors: `FORCE_COLOR = 1`
+         * * 256 colors: `FORCE_COLOR = 2`
+         * * 16,777,216 colors: `FORCE_COLOR = 3`
+         *
+         * Disabling color support is also possible by using the `NO_COLOR` and`NODE_DISABLE_COLORS` environment variables.
+         * @since v9.9.0
+         * @param [env=process.env] An object containing the environment variables to check. This enables simulating the usage of a specific terminal.
+         */
+        getColorDepth(env?: object): number;
+        /**
+         * Returns `true` if the `writeStream` supports at least as many colors as provided
+         * in `count`. Minimum support is 2 (black and white).
+         *
+         * This has the same false positives and negatives as described in `writeStream.getColorDepth()`.
+         *
+         * ```js
+         * process.stdout.hasColors();
+         * // Returns true or false depending on if `stdout` supports at least 16 colors.
+         * process.stdout.hasColors(256);
+         * // Returns true or false depending on if `stdout` supports at least 256 colors.
+         * process.stdout.hasColors({ TMUX: '1' });
+         * // Returns true.
+         * process.stdout.hasColors(2 ** 24, { TMUX: '1' });
+         * // Returns false (the environment setting pretends to support 2 ** 8 colors).
+         * ```
+         * @since v11.13.0, v10.16.0
+         * @param [count=16] The number of colors that are requested (minimum 2).
+         * @param [env=process.env] An object containing the environment variables to check. This enables simulating the usage of a specific terminal.
+         */
+        hasColors(count?: number): boolean;
+        hasColors(env?: object): boolean;
+        hasColors(count: number, env?: object): boolean;
+        /**
+         * `writeStream.getWindowSize()` returns the size of the TTY
+         * corresponding to this `WriteStream`. The array is of the type`[numColumns, numRows]` where `numColumns` and `numRows` represent the number
+         * of columns and rows in the corresponding TTY.
+         * @since v0.7.7
+         */
+        getWindowSize(): [number, number];
+        /**
+         * A `number` specifying the number of columns the TTY currently has. This property
+         * is updated whenever the `'resize'` event is emitted.
+         * @since v0.7.7
+         */
+        columns: number;
+        /**
+         * A `number` specifying the number of rows the TTY currently has. This property
+         * is updated whenever the `'resize'` event is emitted.
+         * @since v0.7.7
+         */
+        rows: number;
+        /**
+         * A `boolean` that is always `true`.
+         * @since v0.5.8
+         */
+        isTTY: boolean;
+    }
+}
+declare module 'node:tty' {
+    export * from 'tty';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/url.d.ts b/igv_component/node_modules/@types/node/ts4.8/url.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..18362c8aa03c7d0c4e6fe11ef186d9fbc0e1b407
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/url.d.ts
@@ -0,0 +1,897 @@
+/**
+ * The `url` module provides utilities for URL resolution and parsing. It can be
+ * accessed using:
+ *
+ * ```js
+ * import url from 'url';
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/url.js)
+ */
+declare module 'url' {
+    import { Blob } from 'node:buffer';
+    import { ClientRequestArgs } from 'node:http';
+    import { ParsedUrlQuery, ParsedUrlQueryInput } from 'node:querystring';
+    // Input to `url.format`
+    interface UrlObject {
+        auth?: string | null | undefined;
+        hash?: string | null | undefined;
+        host?: string | null | undefined;
+        hostname?: string | null | undefined;
+        href?: string | null | undefined;
+        pathname?: string | null | undefined;
+        protocol?: string | null | undefined;
+        search?: string | null | undefined;
+        slashes?: boolean | null | undefined;
+        port?: string | number | null | undefined;
+        query?: string | null | ParsedUrlQueryInput | undefined;
+    }
+    // Output of `url.parse`
+    interface Url {
+        auth: string | null;
+        hash: string | null;
+        host: string | null;
+        hostname: string | null;
+        href: string;
+        path: string | null;
+        pathname: string | null;
+        protocol: string | null;
+        search: string | null;
+        slashes: boolean | null;
+        port: string | null;
+        query: string | null | ParsedUrlQuery;
+    }
+    interface UrlWithParsedQuery extends Url {
+        query: ParsedUrlQuery;
+    }
+    interface UrlWithStringQuery extends Url {
+        query: string | null;
+    }
+    /**
+     * The `url.parse()` method takes a URL string, parses it, and returns a URL
+     * object.
+     *
+     * A `TypeError` is thrown if `urlString` is not a string.
+     *
+     * A `URIError` is thrown if the `auth` property is present but cannot be decoded.
+     *
+     * Use of the legacy `url.parse()` method is discouraged. Users should
+     * use the WHATWG `URL` API. Because the `url.parse()` method uses a
+     * lenient, non-standard algorithm for parsing URL strings, security
+     * issues can be introduced. Specifically, issues with [host name spoofing](https://hackerone.com/reports/678487) and
+     * incorrect handling of usernames and passwords have been identified.
+     *
+     * Deprecation of this API has been shelved for now primarily due to the the
+     * inability of the [WHATWG API to parse relative URLs](https://github.com/nodejs/node/issues/12682#issuecomment-1154492373).
+     * [Discussions are ongoing](https://github.com/whatwg/url/issues/531) for the  best way to resolve this.
+     *
+     * @since v0.1.25
+     * @param urlString The URL string to parse.
+     * @param [parseQueryString=false] If `true`, the `query` property will always be set to an object returned by the {@link querystring} module's `parse()` method. If `false`, the `query` property
+     * on the returned URL object will be an unparsed, undecoded string.
+     * @param [slashesDenoteHost=false] If `true`, the first token after the literal string `//` and preceding the next `/` will be interpreted as the `host`. For instance, given `//foo/bar`, the
+     * result would be `{host: 'foo', pathname: '/bar'}` rather than `{pathname: '//foo/bar'}`.
+     */
+    function parse(urlString: string): UrlWithStringQuery;
+    function parse(urlString: string, parseQueryString: false | undefined, slashesDenoteHost?: boolean): UrlWithStringQuery;
+    function parse(urlString: string, parseQueryString: true, slashesDenoteHost?: boolean): UrlWithParsedQuery;
+    function parse(urlString: string, parseQueryString: boolean, slashesDenoteHost?: boolean): Url;
+    /**
+     * The `url.format()` method returns a formatted URL string derived from`urlObject`.
+     *
+     * ```js
+     * const url = require('url');
+     * url.format({
+     *   protocol: 'https',
+     *   hostname: 'example.com',
+     *   pathname: '/some/path',
+     *   query: {
+     *     page: 1,
+     *     format: 'json'
+     *   }
+     * });
+     *
+     * // => 'https://example.com/some/path?page=1&#x26;format=json'
+     * ```
+     *
+     * If `urlObject` is not an object or a string, `url.format()` will throw a `TypeError`.
+     *
+     * The formatting process operates as follows:
+     *
+     * * A new empty string `result` is created.
+     * * If `urlObject.protocol` is a string, it is appended as-is to `result`.
+     * * Otherwise, if `urlObject.protocol` is not `undefined` and is not a string, an `Error` is thrown.
+     * * For all string values of `urlObject.protocol` that _do not end_ with an ASCII
+     * colon (`:`) character, the literal string `:` will be appended to `result`.
+     * * If either of the following conditions is true, then the literal string `//`will be appended to `result`:
+     *    * `urlObject.slashes` property is true;
+     *    * `urlObject.protocol` begins with `http`, `https`, `ftp`, `gopher`, or`file`;
+     * * If the value of the `urlObject.auth` property is truthy, and either`urlObject.host` or `urlObject.hostname` are not `undefined`, the value of`urlObject.auth` will be coerced into a string
+     * and appended to `result`followed by the literal string `@`.
+     * * If the `urlObject.host` property is `undefined` then:
+     *    * If the `urlObject.hostname` is a string, it is appended to `result`.
+     *    * Otherwise, if `urlObject.hostname` is not `undefined` and is not a string,
+     *    an `Error` is thrown.
+     *    * If the `urlObject.port` property value is truthy, and `urlObject.hostname`is not `undefined`:
+     *          * The literal string `:` is appended to `result`, and
+     *          * The value of `urlObject.port` is coerced to a string and appended to`result`.
+     * * Otherwise, if the `urlObject.host` property value is truthy, the value of`urlObject.host` is coerced to a string and appended to `result`.
+     * * If the `urlObject.pathname` property is a string that is not an empty string:
+     *    * If the `urlObject.pathname`_does not start_ with an ASCII forward slash
+     *    (`/`), then the literal string `'/'` is appended to `result`.
+     *    * The value of `urlObject.pathname` is appended to `result`.
+     * * Otherwise, if `urlObject.pathname` is not `undefined` and is not a string, an `Error` is thrown.
+     * * If the `urlObject.search` property is `undefined` and if the `urlObject.query`property is an `Object`, the literal string `?` is appended to `result`followed by the output of calling the
+     * `querystring` module's `stringify()`method passing the value of `urlObject.query`.
+     * * Otherwise, if `urlObject.search` is a string:
+     *    * If the value of `urlObject.search`_does not start_ with the ASCII question
+     *    mark (`?`) character, the literal string `?` is appended to `result`.
+     *    * The value of `urlObject.search` is appended to `result`.
+     * * Otherwise, if `urlObject.search` is not `undefined` and is not a string, an `Error` is thrown.
+     * * If the `urlObject.hash` property is a string:
+     *    * If the value of `urlObject.hash`_does not start_ with the ASCII hash (`#`)
+     *    character, the literal string `#` is appended to `result`.
+     *    * The value of `urlObject.hash` is appended to `result`.
+     * * Otherwise, if the `urlObject.hash` property is not `undefined` and is not a
+     * string, an `Error` is thrown.
+     * * `result` is returned.
+     * @since v0.1.25
+     * @deprecated Legacy: Use the WHATWG URL API instead.
+     * @param urlObject A URL object (as returned by `url.parse()` or constructed otherwise). If a string, it is converted to an object by passing it to `url.parse()`.
+     */
+    function format(urlObject: URL, options?: URLFormatOptions): string;
+    /**
+     * The `url.format()` method returns a formatted URL string derived from`urlObject`.
+     *
+     * ```js
+     * const url = require('url');
+     * url.format({
+     *   protocol: 'https',
+     *   hostname: 'example.com',
+     *   pathname: '/some/path',
+     *   query: {
+     *     page: 1,
+     *     format: 'json'
+     *   }
+     * });
+     *
+     * // => 'https://example.com/some/path?page=1&#x26;format=json'
+     * ```
+     *
+     * If `urlObject` is not an object or a string, `url.format()` will throw a `TypeError`.
+     *
+     * The formatting process operates as follows:
+     *
+     * * A new empty string `result` is created.
+     * * If `urlObject.protocol` is a string, it is appended as-is to `result`.
+     * * Otherwise, if `urlObject.protocol` is not `undefined` and is not a string, an `Error` is thrown.
+     * * For all string values of `urlObject.protocol` that _do not end_ with an ASCII
+     * colon (`:`) character, the literal string `:` will be appended to `result`.
+     * * If either of the following conditions is true, then the literal string `//`will be appended to `result`:
+     *    * `urlObject.slashes` property is true;
+     *    * `urlObject.protocol` begins with `http`, `https`, `ftp`, `gopher`, or`file`;
+     * * If the value of the `urlObject.auth` property is truthy, and either`urlObject.host` or `urlObject.hostname` are not `undefined`, the value of`urlObject.auth` will be coerced into a string
+     * and appended to `result`followed by the literal string `@`.
+     * * If the `urlObject.host` property is `undefined` then:
+     *    * If the `urlObject.hostname` is a string, it is appended to `result`.
+     *    * Otherwise, if `urlObject.hostname` is not `undefined` and is not a string,
+     *    an `Error` is thrown.
+     *    * If the `urlObject.port` property value is truthy, and `urlObject.hostname`is not `undefined`:
+     *          * The literal string `:` is appended to `result`, and
+     *          * The value of `urlObject.port` is coerced to a string and appended to`result`.
+     * * Otherwise, if the `urlObject.host` property value is truthy, the value of`urlObject.host` is coerced to a string and appended to `result`.
+     * * If the `urlObject.pathname` property is a string that is not an empty string:
+     *    * If the `urlObject.pathname`_does not start_ with an ASCII forward slash
+     *    (`/`), then the literal string `'/'` is appended to `result`.
+     *    * The value of `urlObject.pathname` is appended to `result`.
+     * * Otherwise, if `urlObject.pathname` is not `undefined` and is not a string, an `Error` is thrown.
+     * * If the `urlObject.search` property is `undefined` and if the `urlObject.query`property is an `Object`, the literal string `?` is appended to `result`followed by the output of calling the
+     * `querystring` module's `stringify()`method passing the value of `urlObject.query`.
+     * * Otherwise, if `urlObject.search` is a string:
+     *    * If the value of `urlObject.search`_does not start_ with the ASCII question
+     *    mark (`?`) character, the literal string `?` is appended to `result`.
+     *    * The value of `urlObject.search` is appended to `result`.
+     * * Otherwise, if `urlObject.search` is not `undefined` and is not a string, an `Error` is thrown.
+     * * If the `urlObject.hash` property is a string:
+     *    * If the value of `urlObject.hash`_does not start_ with the ASCII hash (`#`)
+     *    character, the literal string `#` is appended to `result`.
+     *    * The value of `urlObject.hash` is appended to `result`.
+     * * Otherwise, if the `urlObject.hash` property is not `undefined` and is not a
+     * string, an `Error` is thrown.
+     * * `result` is returned.
+     * @since v0.1.25
+     * @deprecated Legacy: Use the WHATWG URL API instead.
+     * @param urlObject A URL object (as returned by `url.parse()` or constructed otherwise). If a string, it is converted to an object by passing it to `url.parse()`.
+     */
+    function format(urlObject: UrlObject | string): string;
+    /**
+     * The `url.resolve()` method resolves a target URL relative to a base URL in a
+     * manner similar to that of a web browser resolving an anchor tag.
+     *
+     * ```js
+     * const url = require('url');
+     * url.resolve('/one/two/three', 'four');         // '/one/two/four'
+     * url.resolve('http://example.com/', '/one');    // 'http://example.com/one'
+     * url.resolve('http://example.com/one', '/two'); // 'http://example.com/two'
+     * ```
+     *
+     * To achieve the same result using the WHATWG URL API:
+     *
+     * ```js
+     * function resolve(from, to) {
+     *   const resolvedUrl = new URL(to, new URL(from, 'resolve://'));
+     *   if (resolvedUrl.protocol === 'resolve:') {
+     *     // `from` is a relative URL.
+     *     const { pathname, search, hash } = resolvedUrl;
+     *     return pathname + search + hash;
+     *   }
+     *   return resolvedUrl.toString();
+     * }
+     *
+     * resolve('/one/two/three', 'four');         // '/one/two/four'
+     * resolve('http://example.com/', '/one');    // 'http://example.com/one'
+     * resolve('http://example.com/one', '/two'); // 'http://example.com/two'
+     * ```
+     * @since v0.1.25
+     * @deprecated Legacy: Use the WHATWG URL API instead.
+     * @param from The base URL to use if `to` is a relative URL.
+     * @param to The target URL to resolve.
+     */
+    function resolve(from: string, to: string): string;
+    /**
+     * Returns the [Punycode](https://tools.ietf.org/html/rfc5891#section-4.4) ASCII serialization of the `domain`. If `domain` is an
+     * invalid domain, the empty string is returned.
+     *
+     * It performs the inverse operation to {@link domainToUnicode}.
+     *
+     * This feature is only available if the `node` executable was compiled with `ICU` enabled. If not, the domain names are passed through unchanged.
+     *
+     * ```js
+     * import url from 'url';
+     *
+     * console.log(url.domainToASCII('español.com'));
+     * // Prints xn--espaol-zwa.com
+     * console.log(url.domainToASCII('中文.com'));
+     * // Prints xn--fiq228c.com
+     * console.log(url.domainToASCII('xn--iñvalid.com'));
+     * // Prints an empty string
+     * ```
+     * @since v7.4.0, v6.13.0
+     */
+    function domainToASCII(domain: string): string;
+    /**
+     * Returns the Unicode serialization of the `domain`. If `domain` is an invalid
+     * domain, the empty string is returned.
+     *
+     * It performs the inverse operation to {@link domainToASCII}.
+     *
+     * This feature is only available if the `node` executable was compiled with `ICU` enabled. If not, the domain names are passed through unchanged.
+     *
+     * ```js
+     * import url from 'url';
+     *
+     * console.log(url.domainToUnicode('xn--espaol-zwa.com'));
+     * // Prints español.com
+     * console.log(url.domainToUnicode('xn--fiq228c.com'));
+     * // Prints 中文.com
+     * console.log(url.domainToUnicode('xn--iñvalid.com'));
+     * // Prints an empty string
+     * ```
+     * @since v7.4.0, v6.13.0
+     */
+    function domainToUnicode(domain: string): string;
+    /**
+     * This function ensures the correct decodings of percent-encoded characters as
+     * well as ensuring a cross-platform valid absolute path string.
+     *
+     * ```js
+     * import { fileURLToPath } from 'url';
+     *
+     * const __filename = fileURLToPath(import.meta.url);
+     *
+     * new URL('file:///C:/path/').pathname;      // Incorrect: /C:/path/
+     * fileURLToPath('file:///C:/path/');         // Correct:   C:\path\ (Windows)
+     *
+     * new URL('file://nas/foo.txt').pathname;    // Incorrect: /foo.txt
+     * fileURLToPath('file://nas/foo.txt');       // Correct:   \\nas\foo.txt (Windows)
+     *
+     * new URL('file:///你好.txt').pathname;      // Incorrect: /%E4%BD%A0%E5%A5%BD.txt
+     * fileURLToPath('file:///你好.txt');         // Correct:   /你好.txt (POSIX)
+     *
+     * new URL('file:///hello world').pathname;   // Incorrect: /hello%20world
+     * fileURLToPath('file:///hello world');      // Correct:   /hello world (POSIX)
+     * ```
+     * @since v10.12.0
+     * @param url The file URL string or URL object to convert to a path.
+     * @return The fully-resolved platform-specific Node.js file path.
+     */
+    function fileURLToPath(url: string | URL): string;
+    /**
+     * This function ensures that `path` is resolved absolutely, and that the URL
+     * control characters are correctly encoded when converting into a File URL.
+     *
+     * ```js
+     * import { pathToFileURL } from 'url';
+     *
+     * new URL('/foo#1', 'file:');           // Incorrect: file:///foo#1
+     * pathToFileURL('/foo#1');              // Correct:   file:///foo%231 (POSIX)
+     *
+     * new URL('/some/path%.c', 'file:');    // Incorrect: file:///some/path%.c
+     * pathToFileURL('/some/path%.c');       // Correct:   file:///some/path%25.c (POSIX)
+     * ```
+     * @since v10.12.0
+     * @param path The path to convert to a File URL.
+     * @return The file URL object.
+     */
+    function pathToFileURL(path: string): URL;
+    /**
+     * This utility function converts a URL object into an ordinary options object as
+     * expected by the `http.request()` and `https.request()` APIs.
+     *
+     * ```js
+     * import { urlToHttpOptions } from 'url';
+     * const myURL = new URL('https://a:b@測試?abc#foo');
+     *
+     * console.log(urlToHttpOptions(myURL));
+     * /*
+     * {
+     *   protocol: 'https:',
+     *   hostname: 'xn--g6w251d',
+     *   hash: '#foo',
+     *   search: '?abc',
+     *   pathname: '/',
+     *   path: '/?abc',
+     *   href: 'https://a:b@xn--g6w251d/?abc#foo',
+     *   auth: 'a:b'
+     * }
+     *
+     * ```
+     * @since v15.7.0, v14.18.0
+     * @param url The `WHATWG URL` object to convert to an options object.
+     * @return Options object
+     */
+    function urlToHttpOptions(url: URL): ClientRequestArgs;
+    interface URLFormatOptions {
+        auth?: boolean | undefined;
+        fragment?: boolean | undefined;
+        search?: boolean | undefined;
+        unicode?: boolean | undefined;
+    }
+    /**
+     * Browser-compatible `URL` class, implemented by following the WHATWG URL
+     * Standard. [Examples of parsed URLs](https://url.spec.whatwg.org/#example-url-parsing) may be found in the Standard itself.
+     * The `URL` class is also available on the global object.
+     *
+     * In accordance with browser conventions, all properties of `URL` objects
+     * are implemented as getters and setters on the class prototype, rather than as
+     * data properties on the object itself. Thus, unlike `legacy urlObject` s,
+     * using the `delete` keyword on any properties of `URL` objects (e.g. `delete myURL.protocol`, `delete myURL.pathname`, etc) has no effect but will still
+     * return `true`.
+     * @since v7.0.0, v6.13.0
+     */
+    class URL {
+        /**
+         * Creates a `'blob:nodedata:...'` URL string that represents the given `Blob` object and can be used to retrieve the `Blob` later.
+         *
+         * ```js
+         * const {
+         *   Blob,
+         *   resolveObjectURL,
+         * } = require('buffer');
+         *
+         * const blob = new Blob(['hello']);
+         * const id = URL.createObjectURL(blob);
+         *
+         * // later...
+         *
+         * const otherBlob = resolveObjectURL(id);
+         * console.log(otherBlob.size);
+         * ```
+         *
+         * The data stored by the registered `Blob` will be retained in memory until`URL.revokeObjectURL()` is called to remove it.
+         *
+         * `Blob` objects are registered within the current thread. If using Worker
+         * Threads, `Blob` objects registered within one Worker will not be available
+         * to other workers or the main thread.
+         * @since v16.7.0
+         * @experimental
+         */
+        static createObjectURL(blob: Blob): string;
+        /**
+         * Removes the stored `Blob` identified by the given ID. Attempting to revoke a
+         * ID that isn’t registered will silently fail.
+         * @since v16.7.0
+         * @experimental
+         * @param id A `'blob:nodedata:...` URL string returned by a prior call to `URL.createObjectURL()`.
+         */
+        static revokeObjectURL(objectUrl: string): void;
+        constructor(input: string, base?: string | URL);
+        /**
+         * Gets and sets the fragment portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/foo#bar');
+         * console.log(myURL.hash);
+         * // Prints #bar
+         *
+         * myURL.hash = 'baz';
+         * console.log(myURL.href);
+         * // Prints https://example.org/foo#baz
+         * ```
+         *
+         * Invalid URL characters included in the value assigned to the `hash` property
+         * are `percent-encoded`. The selection of which characters to
+         * percent-encode may vary somewhat from what the {@link parse} and {@link format} methods would produce.
+         */
+        hash: string;
+        /**
+         * Gets and sets the host portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org:81/foo');
+         * console.log(myURL.host);
+         * // Prints example.org:81
+         *
+         * myURL.host = 'example.com:82';
+         * console.log(myURL.href);
+         * // Prints https://example.com:82/foo
+         * ```
+         *
+         * Invalid host values assigned to the `host` property are ignored.
+         */
+        host: string;
+        /**
+         * Gets and sets the host name portion of the URL. The key difference between`url.host` and `url.hostname` is that `url.hostname` does _not_ include the
+         * port.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org:81/foo');
+         * console.log(myURL.hostname);
+         * // Prints example.org
+         *
+         * // Setting the hostname does not change the port
+         * myURL.hostname = 'example.com:82';
+         * console.log(myURL.href);
+         * // Prints https://example.com:81/foo
+         *
+         * // Use myURL.host to change the hostname and port
+         * myURL.host = 'example.org:82';
+         * console.log(myURL.href);
+         * // Prints https://example.org:82/foo
+         * ```
+         *
+         * Invalid host name values assigned to the `hostname` property are ignored.
+         */
+        hostname: string;
+        /**
+         * Gets and sets the serialized URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/foo');
+         * console.log(myURL.href);
+         * // Prints https://example.org/foo
+         *
+         * myURL.href = 'https://example.com/bar';
+         * console.log(myURL.href);
+         * // Prints https://example.com/bar
+         * ```
+         *
+         * Getting the value of the `href` property is equivalent to calling {@link toString}.
+         *
+         * Setting the value of this property to a new value is equivalent to creating a
+         * new `URL` object using `new URL(value)`. Each of the `URL`object's properties will be modified.
+         *
+         * If the value assigned to the `href` property is not a valid URL, a `TypeError`will be thrown.
+         */
+        href: string;
+        /**
+         * Gets the read-only serialization of the URL's origin.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/foo/bar?baz');
+         * console.log(myURL.origin);
+         * // Prints https://example.org
+         * ```
+         *
+         * ```js
+         * const idnURL = new URL('https://測試');
+         * console.log(idnURL.origin);
+         * // Prints https://xn--g6w251d
+         *
+         * console.log(idnURL.hostname);
+         * // Prints xn--g6w251d
+         * ```
+         */
+        readonly origin: string;
+        /**
+         * Gets and sets the password portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://abc:xyz@example.com');
+         * console.log(myURL.password);
+         * // Prints xyz
+         *
+         * myURL.password = '123';
+         * console.log(myURL.href);
+         * // Prints https://abc:123@example.com
+         * ```
+         *
+         * Invalid URL characters included in the value assigned to the `password` property
+         * are `percent-encoded`. The selection of which characters to
+         * percent-encode may vary somewhat from what the {@link parse} and {@link format} methods would produce.
+         */
+        password: string;
+        /**
+         * Gets and sets the path portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/abc/xyz?123');
+         * console.log(myURL.pathname);
+         * // Prints /abc/xyz
+         *
+         * myURL.pathname = '/abcdef';
+         * console.log(myURL.href);
+         * // Prints https://example.org/abcdef?123
+         * ```
+         *
+         * Invalid URL characters included in the value assigned to the `pathname`property are `percent-encoded`. The selection of which characters
+         * to percent-encode may vary somewhat from what the {@link parse} and {@link format} methods would produce.
+         */
+        pathname: string;
+        /**
+         * Gets and sets the port portion of the URL.
+         *
+         * The port value may be a number or a string containing a number in the range`0` to `65535` (inclusive). Setting the value to the default port of the`URL` objects given `protocol` will
+         * result in the `port` value becoming
+         * the empty string (`''`).
+         *
+         * The port value can be an empty string in which case the port depends on
+         * the protocol/scheme:
+         *
+         * <omitted>
+         *
+         * Upon assigning a value to the port, the value will first be converted to a
+         * string using `.toString()`.
+         *
+         * If that string is invalid but it begins with a number, the leading number is
+         * assigned to `port`.
+         * If the number lies outside the range denoted above, it is ignored.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org:8888');
+         * console.log(myURL.port);
+         * // Prints 8888
+         *
+         * // Default ports are automatically transformed to the empty string
+         * // (HTTPS protocol's default port is 443)
+         * myURL.port = '443';
+         * console.log(myURL.port);
+         * // Prints the empty string
+         * console.log(myURL.href);
+         * // Prints https://example.org/
+         *
+         * myURL.port = 1234;
+         * console.log(myURL.port);
+         * // Prints 1234
+         * console.log(myURL.href);
+         * // Prints https://example.org:1234/
+         *
+         * // Completely invalid port strings are ignored
+         * myURL.port = 'abcd';
+         * console.log(myURL.port);
+         * // Prints 1234
+         *
+         * // Leading numbers are treated as a port number
+         * myURL.port = '5678abcd';
+         * console.log(myURL.port);
+         * // Prints 5678
+         *
+         * // Non-integers are truncated
+         * myURL.port = 1234.5678;
+         * console.log(myURL.port);
+         * // Prints 1234
+         *
+         * // Out-of-range numbers which are not represented in scientific notation
+         * // will be ignored.
+         * myURL.port = 1e10; // 10000000000, will be range-checked as described below
+         * console.log(myURL.port);
+         * // Prints 1234
+         * ```
+         *
+         * Numbers which contain a decimal point,
+         * such as floating-point numbers or numbers in scientific notation,
+         * are not an exception to this rule.
+         * Leading numbers up to the decimal point will be set as the URL's port,
+         * assuming they are valid:
+         *
+         * ```js
+         * myURL.port = 4.567e21;
+         * console.log(myURL.port);
+         * // Prints 4 (because it is the leading number in the string '4.567e21')
+         * ```
+         */
+        port: string;
+        /**
+         * Gets and sets the protocol portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org');
+         * console.log(myURL.protocol);
+         * // Prints https:
+         *
+         * myURL.protocol = 'ftp';
+         * console.log(myURL.href);
+         * // Prints ftp://example.org/
+         * ```
+         *
+         * Invalid URL protocol values assigned to the `protocol` property are ignored.
+         */
+        protocol: string;
+        /**
+         * Gets and sets the serialized query portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/abc?123');
+         * console.log(myURL.search);
+         * // Prints ?123
+         *
+         * myURL.search = 'abc=xyz';
+         * console.log(myURL.href);
+         * // Prints https://example.org/abc?abc=xyz
+         * ```
+         *
+         * Any invalid URL characters appearing in the value assigned the `search`property will be `percent-encoded`. The selection of which
+         * characters to percent-encode may vary somewhat from what the {@link parse} and {@link format} methods would produce.
+         */
+        search: string;
+        /**
+         * Gets the `URLSearchParams` object representing the query parameters of the
+         * URL. This property is read-only but the `URLSearchParams` object it provides
+         * can be used to mutate the URL instance; to replace the entirety of query
+         * parameters of the URL, use the {@link search} setter. See `URLSearchParams` documentation for details.
+         *
+         * Use care when using `.searchParams` to modify the `URL` because,
+         * per the WHATWG specification, the `URLSearchParams` object uses
+         * different rules to determine which characters to percent-encode. For
+         * instance, the `URL` object will not percent encode the ASCII tilde (`~`)
+         * character, while `URLSearchParams` will always encode it:
+         *
+         * ```js
+         * const myUrl = new URL('https://example.org/abc?foo=~bar');
+         *
+         * console.log(myUrl.search);  // prints ?foo=~bar
+         *
+         * // Modify the URL via searchParams...
+         * myUrl.searchParams.sort();
+         *
+         * console.log(myUrl.search);  // prints ?foo=%7Ebar
+         * ```
+         */
+        readonly searchParams: URLSearchParams;
+        /**
+         * Gets and sets the username portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://abc:xyz@example.com');
+         * console.log(myURL.username);
+         * // Prints abc
+         *
+         * myURL.username = '123';
+         * console.log(myURL.href);
+         * // Prints https://123:xyz@example.com/
+         * ```
+         *
+         * Any invalid URL characters appearing in the value assigned the `username`property will be `percent-encoded`. The selection of which
+         * characters to percent-encode may vary somewhat from what the {@link parse} and {@link format} methods would produce.
+         */
+        username: string;
+        /**
+         * The `toString()` method on the `URL` object returns the serialized URL. The
+         * value returned is equivalent to that of {@link href} and {@link toJSON}.
+         */
+        toString(): string;
+        /**
+         * The `toJSON()` method on the `URL` object returns the serialized URL. The
+         * value returned is equivalent to that of {@link href} and {@link toString}.
+         *
+         * This method is automatically called when an `URL` object is serialized
+         * with [`JSON.stringify()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify).
+         *
+         * ```js
+         * const myURLs = [
+         *   new URL('https://www.example.com'),
+         *   new URL('https://test.example.org'),
+         * ];
+         * console.log(JSON.stringify(myURLs));
+         * // Prints ["https://www.example.com/","https://test.example.org/"]
+         * ```
+         */
+        toJSON(): string;
+    }
+    /**
+     * The `URLSearchParams` API provides read and write access to the query of a`URL`. The `URLSearchParams` class can also be used standalone with one of the
+     * four following constructors.
+     * The `URLSearchParams` class is also available on the global object.
+     *
+     * The WHATWG `URLSearchParams` interface and the `querystring` module have
+     * similar purpose, but the purpose of the `querystring` module is more
+     * general, as it allows the customization of delimiter characters (`&#x26;` and `=`).
+     * On the other hand, this API is designed purely for URL query strings.
+     *
+     * ```js
+     * const myURL = new URL('https://example.org/?abc=123');
+     * console.log(myURL.searchParams.get('abc'));
+     * // Prints 123
+     *
+     * myURL.searchParams.append('abc', 'xyz');
+     * console.log(myURL.href);
+     * // Prints https://example.org/?abc=123&#x26;abc=xyz
+     *
+     * myURL.searchParams.delete('abc');
+     * myURL.searchParams.set('a', 'b');
+     * console.log(myURL.href);
+     * // Prints https://example.org/?a=b
+     *
+     * const newSearchParams = new URLSearchParams(myURL.searchParams);
+     * // The above is equivalent to
+     * // const newSearchParams = new URLSearchParams(myURL.search);
+     *
+     * newSearchParams.append('a', 'c');
+     * console.log(myURL.href);
+     * // Prints https://example.org/?a=b
+     * console.log(newSearchParams.toString());
+     * // Prints a=b&#x26;a=c
+     *
+     * // newSearchParams.toString() is implicitly called
+     * myURL.search = newSearchParams;
+     * console.log(myURL.href);
+     * // Prints https://example.org/?a=b&#x26;a=c
+     * newSearchParams.delete('a');
+     * console.log(myURL.href);
+     * // Prints https://example.org/?a=b&#x26;a=c
+     * ```
+     * @since v7.5.0, v6.13.0
+     */
+    class URLSearchParams implements Iterable<[string, string]> {
+        constructor(init?: URLSearchParams | string | Record<string, string | ReadonlyArray<string>> | Iterable<[string, string]> | ReadonlyArray<[string, string]>);
+        /**
+         * Append a new name-value pair to the query string.
+         */
+        append(name: string, value: string): void;
+        /**
+         * Remove all name-value pairs whose name is `name`.
+         */
+        delete(name: string): void;
+        /**
+         * Returns an ES6 `Iterator` over each of the name-value pairs in the query.
+         * Each item of the iterator is a JavaScript `Array`. The first item of the `Array`is the `name`, the second item of the `Array` is the `value`.
+         *
+         * Alias for `urlSearchParams[@@iterator]()`.
+         */
+        entries(): IterableIterator<[string, string]>;
+        /**
+         * Iterates over each name-value pair in the query and invokes the given function.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/?a=b&#x26;c=d');
+         * myURL.searchParams.forEach((value, name, searchParams) => {
+         *   console.log(name, value, myURL.searchParams === searchParams);
+         * });
+         * // Prints:
+         * //   a b true
+         * //   c d true
+         * ```
+         * @param fn Invoked for each name-value pair in the query
+         * @param thisArg To be used as `this` value for when `fn` is called
+         */
+        forEach<TThis = this>(callback: (this: TThis, value: string, name: string, searchParams: URLSearchParams) => void, thisArg?: TThis): void;
+        /**
+         * Returns the value of the first name-value pair whose name is `name`. If there
+         * are no such pairs, `null` is returned.
+         * @return or `null` if there is no name-value pair with the given `name`.
+         */
+        get(name: string): string | null;
+        /**
+         * Returns the values of all name-value pairs whose name is `name`. If there are
+         * no such pairs, an empty array is returned.
+         */
+        getAll(name: string): string[];
+        /**
+         * Returns `true` if there is at least one name-value pair whose name is `name`.
+         */
+        has(name: string): boolean;
+        /**
+         * Returns an ES6 `Iterator` over the names of each name-value pair.
+         *
+         * ```js
+         * const params = new URLSearchParams('foo=bar&#x26;foo=baz');
+         * for (const name of params.keys()) {
+         *   console.log(name);
+         * }
+         * // Prints:
+         * //   foo
+         * //   foo
+         * ```
+         */
+        keys(): IterableIterator<string>;
+        /**
+         * Sets the value in the `URLSearchParams` object associated with `name` to`value`. If there are any pre-existing name-value pairs whose names are `name`,
+         * set the first such pair's value to `value` and remove all others. If not,
+         * append the name-value pair to the query string.
+         *
+         * ```js
+         * const params = new URLSearchParams();
+         * params.append('foo', 'bar');
+         * params.append('foo', 'baz');
+         * params.append('abc', 'def');
+         * console.log(params.toString());
+         * // Prints foo=bar&#x26;foo=baz&#x26;abc=def
+         *
+         * params.set('foo', 'def');
+         * params.set('xyz', 'opq');
+         * console.log(params.toString());
+         * // Prints foo=def&#x26;abc=def&#x26;xyz=opq
+         * ```
+         */
+        set(name: string, value: string): void;
+        /**
+         * Sort all existing name-value pairs in-place by their names. Sorting is done
+         * with a [stable sorting algorithm](https://en.wikipedia.org/wiki/Sorting_algorithm#Stability), so relative order between name-value pairs
+         * with the same name is preserved.
+         *
+         * This method can be used, in particular, to increase cache hits.
+         *
+         * ```js
+         * const params = new URLSearchParams('query[]=abc&#x26;type=search&#x26;query[]=123');
+         * params.sort();
+         * console.log(params.toString());
+         * // Prints query%5B%5D=abc&#x26;query%5B%5D=123&#x26;type=search
+         * ```
+         * @since v7.7.0, v6.13.0
+         */
+        sort(): void;
+        /**
+         * Returns the search parameters serialized as a string, with characters
+         * percent-encoded where necessary.
+         */
+        toString(): string;
+        /**
+         * Returns an ES6 `Iterator` over the values of each name-value pair.
+         */
+        values(): IterableIterator<string>;
+        [Symbol.iterator](): IterableIterator<[string, string]>;
+    }
+    import { URL as _URL, URLSearchParams as _URLSearchParams } from 'url';
+    global {
+        interface URLSearchParams extends _URLSearchParams {}
+        interface URL extends _URL {}
+        interface Global {
+            URL: typeof _URL;
+            URLSearchParams: typeof _URLSearchParams;
+        }
+        /**
+         * `URL` class is a global reference for `require('url').URL`
+         * https://nodejs.org/api/url.html#the-whatwg-url-api
+         * @since v10.0.0
+         */
+        var URL: typeof globalThis extends {
+            onmessage: any;
+            URL: infer URL;
+        }
+            ? URL
+            : typeof _URL;
+        /**
+         * `URLSearchParams` class is a global reference for `require('url').URLSearchParams`
+         * https://nodejs.org/api/url.html#class-urlsearchparams
+         * @since v10.0.0
+         */
+        var URLSearchParams: typeof globalThis extends {
+            onmessage: any;
+            URLSearchParams: infer URLSearchParams;
+        }
+            ? URLSearchParams
+            : typeof _URLSearchParams;
+    }
+}
+declare module 'node:url' {
+    export * from 'url';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/util.d.ts b/igv_component/node_modules/@types/node/ts4.8/util.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a081325680a09a4ff228ba6d6be805528c0e7693
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/util.d.ts
@@ -0,0 +1,1792 @@
+/**
+ * The `util` module supports the needs of Node.js internal APIs. Many of the
+ * utilities are useful for application and module developers as well. To access
+ * it:
+ *
+ * ```js
+ * const util = require('util');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/util.js)
+ */
+declare module 'util' {
+    import * as types from 'node:util/types';
+    export interface InspectOptions {
+        /**
+         * If set to `true`, getters are going to be
+         * inspected as well. If set to `'get'` only getters without setter are going
+         * to be inspected. If set to `'set'` only getters having a corresponding
+         * setter are going to be inspected. This might cause side effects depending on
+         * the getter function.
+         * @default `false`
+         */
+        getters?: 'get' | 'set' | boolean | undefined;
+        showHidden?: boolean | undefined;
+        /**
+         * @default 2
+         */
+        depth?: number | null | undefined;
+        colors?: boolean | undefined;
+        customInspect?: boolean | undefined;
+        showProxy?: boolean | undefined;
+        maxArrayLength?: number | null | undefined;
+        /**
+         * Specifies the maximum number of characters to
+         * include when formatting. Set to `null` or `Infinity` to show all elements.
+         * Set to `0` or negative to show no characters.
+         * @default 10000
+         */
+        maxStringLength?: number | null | undefined;
+        breakLength?: number | undefined;
+        /**
+         * Setting this to `false` causes each object key
+         * to be displayed on a new line. It will also add new lines to text that is
+         * longer than `breakLength`. If set to a number, the most `n` inner elements
+         * are united on a single line as long as all properties fit into
+         * `breakLength`. Short array elements are also grouped together. Note that no
+         * text will be reduced below 16 characters, no matter the `breakLength` size.
+         * For more information, see the example below.
+         * @default `true`
+         */
+        compact?: boolean | number | undefined;
+        sorted?: boolean | ((a: string, b: string) => number) | undefined;
+    }
+    export type Style = 'special' | 'number' | 'bigint' | 'boolean' | 'undefined' | 'null' | 'string' | 'symbol' | 'date' | 'regexp' | 'module';
+    export type CustomInspectFunction = (depth: number, options: InspectOptionsStylized) => string;
+    export interface InspectOptionsStylized extends InspectOptions {
+        stylize(text: string, styleType: Style): string;
+    }
+    /**
+     * The `util.format()` method returns a formatted string using the first argument
+     * as a `printf`\-like format string which can contain zero or more format
+     * specifiers. Each specifier is replaced with the converted value from the
+     * corresponding argument. Supported specifiers are:
+     *
+     * If a specifier does not have a corresponding argument, it is not replaced:
+     *
+     * ```js
+     * util.format('%s:%s', 'foo');
+     * // Returns: 'foo:%s'
+     * ```
+     *
+     * Values that are not part of the format string are formatted using`util.inspect()` if their type is not `string`.
+     *
+     * If there are more arguments passed to the `util.format()` method than the
+     * number of specifiers, the extra arguments are concatenated to the returned
+     * string, separated by spaces:
+     *
+     * ```js
+     * util.format('%s:%s', 'foo', 'bar', 'baz');
+     * // Returns: 'foo:bar baz'
+     * ```
+     *
+     * If the first argument does not contain a valid format specifier, `util.format()`returns a string that is the concatenation of all arguments separated by spaces:
+     *
+     * ```js
+     * util.format(1, 2, 3);
+     * // Returns: '1 2 3'
+     * ```
+     *
+     * If only one argument is passed to `util.format()`, it is returned as it is
+     * without any formatting:
+     *
+     * ```js
+     * util.format('%% %s');
+     * // Returns: '%% %s'
+     * ```
+     *
+     * `util.format()` is a synchronous method that is intended as a debugging tool.
+     * Some input values can have a significant performance overhead that can block the
+     * event loop. Use this function with care and never in a hot code path.
+     * @since v0.5.3
+     * @param format A `printf`-like format string.
+     */
+    export function format(format?: any, ...param: any[]): string;
+    /**
+     * This function is identical to {@link format}, except in that it takes
+     * an `inspectOptions` argument which specifies options that are passed along to {@link inspect}.
+     *
+     * ```js
+     * util.formatWithOptions({ colors: true }, 'See object %O', { foo: 42 });
+     * // Returns 'See object { foo: 42 }', where `42` is colored as a number
+     * // when printed to a terminal.
+     * ```
+     * @since v10.0.0
+     */
+    export function formatWithOptions(inspectOptions: InspectOptions, format?: any, ...param: any[]): string;
+    /**
+     * Returns the string name for a numeric error code that comes from a Node.js API.
+     * The mapping between error codes and error names is platform-dependent.
+     * See `Common System Errors` for the names of common errors.
+     *
+     * ```js
+     * fs.access('file/that/does/not/exist', (err) => {
+     *   const name = util.getSystemErrorName(err.errno);
+     *   console.error(name);  // ENOENT
+     * });
+     * ```
+     * @since v9.7.0
+     */
+    export function getSystemErrorName(err: number): string;
+    /**
+     * Returns a Map of all system error codes available from the Node.js API.
+     * The mapping between error codes and error names is platform-dependent.
+     * See `Common System Errors` for the names of common errors.
+     *
+     * ```js
+     * fs.access('file/that/does/not/exist', (err) => {
+     *   const errorMap = util.getSystemErrorMap();
+     *   const name = errorMap.get(err.errno);
+     *   console.error(name);  // ENOENT
+     * });
+     * ```
+     * @since v16.0.0, v14.17.0
+     */
+    export function getSystemErrorMap(): Map<number, [string, string]>;
+    /**
+     * The `util.log()` method prints the given `string` to `stdout` with an included
+     * timestamp.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.log('Timestamped message.');
+     * ```
+     * @since v0.3.0
+     * @deprecated Since v6.0.0 - Use a third party module instead.
+     */
+    export function log(string: string): void;
+    /**
+     * Returns the `string` after replacing any surrogate code points
+     * (or equivalently, any unpaired surrogate code units) with the
+     * Unicode "replacement character" U+FFFD.
+     * @since v16.8.0, v14.18.0
+     */
+    export function toUSVString(string: string): string;
+    /**
+     * The `util.inspect()` method returns a string representation of `object` that is
+     * intended for debugging. The output of `util.inspect` may change at any time
+     * and should not be depended upon programmatically. Additional `options` may be
+     * passed that alter the result.`util.inspect()` will use the constructor's name and/or `@@toStringTag` to make
+     * an identifiable tag for an inspected value.
+     *
+     * ```js
+     * class Foo {
+     *   get [Symbol.toStringTag]() {
+     *     return 'bar';
+     *   }
+     * }
+     *
+     * class Bar {}
+     *
+     * const baz = Object.create(null, { [Symbol.toStringTag]: { value: 'foo' } });
+     *
+     * util.inspect(new Foo()); // 'Foo [bar] {}'
+     * util.inspect(new Bar()); // 'Bar {}'
+     * util.inspect(baz);       // '[foo] {}'
+     * ```
+     *
+     * Circular references point to their anchor by using a reference index:
+     *
+     * ```js
+     * const { inspect } = require('util');
+     *
+     * const obj = {};
+     * obj.a = [obj];
+     * obj.b = {};
+     * obj.b.inner = obj.b;
+     * obj.b.obj = obj;
+     *
+     * console.log(inspect(obj));
+     * // <ref *1> {
+     * //   a: [ [Circular *1] ],
+     * //   b: <ref *2> { inner: [Circular *2], obj: [Circular *1] }
+     * // }
+     * ```
+     *
+     * The following example inspects all properties of the `util` object:
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * console.log(util.inspect(util, { showHidden: true, depth: null }));
+     * ```
+     *
+     * The following example highlights the effect of the `compact` option:
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * const o = {
+     *   a: [1, 2, [[
+     *     'Lorem ipsum dolor sit amet,\nconsectetur adipiscing elit, sed do ' +
+     *       'eiusmod \ntempor incididunt ut labore et dolore magna aliqua.',
+     *     'test',
+     *     'foo']], 4],
+     *   b: new Map([['za', 1], ['zb', 'test']])
+     * };
+     * console.log(util.inspect(o, { compact: true, depth: 5, breakLength: 80 }));
+     *
+     * // { a:
+     * //   [ 1,
+     * //     2,
+     * //     [ [ 'Lorem ipsum dolor sit amet,\nconsectetur [...]', // A long line
+     * //           'test',
+     * //           'foo' ] ],
+     * //     4 ],
+     * //   b: Map(2) { 'za' => 1, 'zb' => 'test' } }
+     *
+     * // Setting `compact` to false or an integer creates more reader friendly output.
+     * console.log(util.inspect(o, { compact: false, depth: 5, breakLength: 80 }));
+     *
+     * // {
+     * //   a: [
+     * //     1,
+     * //     2,
+     * //     [
+     * //       [
+     * //         'Lorem ipsum dolor sit amet,\n' +
+     * //           'consectetur adipiscing elit, sed do eiusmod \n' +
+     * //           'tempor incididunt ut labore et dolore magna aliqua.',
+     * //         'test',
+     * //         'foo'
+     * //       ]
+     * //     ],
+     * //     4
+     * //   ],
+     * //   b: Map(2) {
+     * //     'za' => 1,
+     * //     'zb' => 'test'
+     * //   }
+     * // }
+     *
+     * // Setting `breakLength` to e.g. 150 will print the "Lorem ipsum" text in a
+     * // single line.
+     * ```
+     *
+     * The `showHidden` option allows [`WeakMap`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap) and
+     * [`WeakSet`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet) entries to be
+     * inspected. If there are more entries than `maxArrayLength`, there is no
+     * guarantee which entries are displayed. That means retrieving the same [`WeakSet`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet) entries twice may
+     * result in different output. Furthermore, entries
+     * with no remaining strong references may be garbage collected at any time.
+     *
+     * ```js
+     * const { inspect } = require('util');
+     *
+     * const obj = { a: 1 };
+     * const obj2 = { b: 2 };
+     * const weakSet = new WeakSet([obj, obj2]);
+     *
+     * console.log(inspect(weakSet, { showHidden: true }));
+     * // WeakSet { { a: 1 }, { b: 2 } }
+     * ```
+     *
+     * The `sorted` option ensures that an object's property insertion order does not
+     * impact the result of `util.inspect()`.
+     *
+     * ```js
+     * const { inspect } = require('util');
+     * const assert = require('assert');
+     *
+     * const o1 = {
+     *   b: [2, 3, 1],
+     *   a: '`a` comes before `b`',
+     *   c: new Set([2, 3, 1])
+     * };
+     * console.log(inspect(o1, { sorted: true }));
+     * // { a: '`a` comes before `b`', b: [ 2, 3, 1 ], c: Set(3) { 1, 2, 3 } }
+     * console.log(inspect(o1, { sorted: (a, b) => b.localeCompare(a) }));
+     * // { c: Set(3) { 3, 2, 1 }, b: [ 2, 3, 1 ], a: '`a` comes before `b`' }
+     *
+     * const o2 = {
+     *   c: new Set([2, 1, 3]),
+     *   a: '`a` comes before `b`',
+     *   b: [2, 3, 1]
+     * };
+     * assert.strict.equal(
+     *   inspect(o1, { sorted: true }),
+     *   inspect(o2, { sorted: true })
+     * );
+     * ```
+     *
+     * The `numericSeparator` option adds an underscore every three digits to all
+     * numbers.
+     *
+     * ```js
+     * const { inspect } = require('util');
+     *
+     * const thousand = 1_000;
+     * const million = 1_000_000;
+     * const bigNumber = 123_456_789n;
+     * const bigDecimal = 1_234.123_45;
+     *
+     * console.log(thousand, million, bigNumber, bigDecimal);
+     * // 1_000 1_000_000 123_456_789n 1_234.123_45
+     * ```
+     *
+     * `util.inspect()` is a synchronous method intended for debugging. Its maximum
+     * output length is approximately 128 MB. Inputs that result in longer output will
+     * be truncated.
+     * @since v0.3.0
+     * @param object Any JavaScript primitive or `Object`.
+     * @return The representation of `object`.
+     */
+    export function inspect(object: any, showHidden?: boolean, depth?: number | null, color?: boolean): string;
+    export function inspect(object: any, options?: InspectOptions): string;
+    export namespace inspect {
+        let colors: NodeJS.Dict<[number, number]>;
+        let styles: {
+            [K in Style]: string;
+        };
+        let defaultOptions: InspectOptions;
+        /**
+         * Allows changing inspect settings from the repl.
+         */
+        let replDefaults: InspectOptions;
+        /**
+         * That can be used to declare custom inspect functions.
+         */
+        const custom: unique symbol;
+    }
+    /**
+     * Alias for [`Array.isArray()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray).
+     *
+     * Returns `true` if the given `object` is an `Array`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isArray([]);
+     * // Returns: true
+     * util.isArray(new Array());
+     * // Returns: true
+     * util.isArray({});
+     * // Returns: false
+     * ```
+     * @since v0.6.0
+     * @deprecated Since v4.0.0 - Use `isArray` instead.
+     */
+    export function isArray(object: unknown): object is unknown[];
+    /**
+     * Returns `true` if the given `object` is a `RegExp`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isRegExp(/some regexp/);
+     * // Returns: true
+     * util.isRegExp(new RegExp('another regexp'));
+     * // Returns: true
+     * util.isRegExp({});
+     * // Returns: false
+     * ```
+     * @since v0.6.0
+     * @deprecated Since v4.0.0 - Deprecated
+     */
+    export function isRegExp(object: unknown): object is RegExp;
+    /**
+     * Returns `true` if the given `object` is a `Date`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isDate(new Date());
+     * // Returns: true
+     * util.isDate(Date());
+     * // false (without 'new' returns a String)
+     * util.isDate({});
+     * // Returns: false
+     * ```
+     * @since v0.6.0
+     * @deprecated Since v4.0.0 - Use {@link types.isDate} instead.
+     */
+    export function isDate(object: unknown): object is Date;
+    /**
+     * Returns `true` if the given `object` is an `Error`. Otherwise, returns`false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isError(new Error());
+     * // Returns: true
+     * util.isError(new TypeError());
+     * // Returns: true
+     * util.isError({ name: 'Error', message: 'an error occurred' });
+     * // Returns: false
+     * ```
+     *
+     * This method relies on `Object.prototype.toString()` behavior. It is
+     * possible to obtain an incorrect result when the `object` argument manipulates`@@toStringTag`.
+     *
+     * ```js
+     * const util = require('util');
+     * const obj = { name: 'Error', message: 'an error occurred' };
+     *
+     * util.isError(obj);
+     * // Returns: false
+     * obj[Symbol.toStringTag] = 'Error';
+     * util.isError(obj);
+     * // Returns: true
+     * ```
+     * @since v0.6.0
+     * @deprecated Since v4.0.0 - Use {@link types.isNativeError} instead.
+     */
+    export function isError(object: unknown): object is Error;
+    /**
+     * Usage of `util.inherits()` is discouraged. Please use the ES6 `class` and`extends` keywords to get language level inheritance support. Also note
+     * that the two styles are [semantically incompatible](https://github.com/nodejs/node/issues/4179).
+     *
+     * Inherit the prototype methods from one [constructor](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/constructor) into another. The
+     * prototype of `constructor` will be set to a new object created from`superConstructor`.
+     *
+     * This mainly adds some input validation on top of`Object.setPrototypeOf(constructor.prototype, superConstructor.prototype)`.
+     * As an additional convenience, `superConstructor` will be accessible
+     * through the `constructor.super_` property.
+     *
+     * ```js
+     * const util = require('util');
+     * const EventEmitter = require('events');
+     *
+     * function MyStream() {
+     *   EventEmitter.call(this);
+     * }
+     *
+     * util.inherits(MyStream, EventEmitter);
+     *
+     * MyStream.prototype.write = function(data) {
+     *   this.emit('data', data);
+     * };
+     *
+     * const stream = new MyStream();
+     *
+     * console.log(stream instanceof EventEmitter); // true
+     * console.log(MyStream.super_ === EventEmitter); // true
+     *
+     * stream.on('data', (data) => {
+     *   console.log(`Received data: "${data}"`);
+     * });
+     * stream.write('It works!'); // Received data: "It works!"
+     * ```
+     *
+     * ES6 example using `class` and `extends`:
+     *
+     * ```js
+     * const EventEmitter = require('events');
+     *
+     * class MyStream extends EventEmitter {
+     *   write(data) {
+     *     this.emit('data', data);
+     *   }
+     * }
+     *
+     * const stream = new MyStream();
+     *
+     * stream.on('data', (data) => {
+     *   console.log(`Received data: "${data}"`);
+     * });
+     * stream.write('With ES6');
+     * ```
+     * @since v0.3.0
+     * @deprecated Legacy: Use ES2015 class syntax and `extends` keyword instead.
+     */
+    export function inherits(constructor: unknown, superConstructor: unknown): void;
+    export type DebugLoggerFunction = (msg: string, ...param: unknown[]) => void;
+    export interface DebugLogger extends DebugLoggerFunction {
+        enabled: boolean;
+    }
+    /**
+     * The `util.debuglog()` method is used to create a function that conditionally
+     * writes debug messages to `stderr` based on the existence of the `NODE_DEBUG`environment variable. If the `section` name appears within the value of that
+     * environment variable, then the returned function operates similar to `console.error()`. If not, then the returned function is a no-op.
+     *
+     * ```js
+     * const util = require('util');
+     * const debuglog = util.debuglog('foo');
+     *
+     * debuglog('hello from foo [%d]', 123);
+     * ```
+     *
+     * If this program is run with `NODE_DEBUG=foo` in the environment, then
+     * it will output something like:
+     *
+     * ```console
+     * FOO 3245: hello from foo [123]
+     * ```
+     *
+     * where `3245` is the process id. If it is not run with that
+     * environment variable set, then it will not print anything.
+     *
+     * The `section` supports wildcard also:
+     *
+     * ```js
+     * const util = require('util');
+     * const debuglog = util.debuglog('foo-bar');
+     *
+     * debuglog('hi there, it\'s foo-bar [%d]', 2333);
+     * ```
+     *
+     * if it is run with `NODE_DEBUG=foo*` in the environment, then it will output
+     * something like:
+     *
+     * ```console
+     * FOO-BAR 3257: hi there, it's foo-bar [2333]
+     * ```
+     *
+     * Multiple comma-separated `section` names may be specified in the `NODE_DEBUG`environment variable: `NODE_DEBUG=fs,net,tls`.
+     *
+     * The optional `callback` argument can be used to replace the logging function
+     * with a different function that doesn't have any initialization or
+     * unnecessary wrapping.
+     *
+     * ```js
+     * const util = require('util');
+     * let debuglog = util.debuglog('internals', (debug) => {
+     *   // Replace with a logging function that optimizes out
+     *   // testing if the section is enabled
+     *   debuglog = debug;
+     * });
+     * ```
+     * @since v0.11.3
+     * @param section A string identifying the portion of the application for which the `debuglog` function is being created.
+     * @param callback A callback invoked the first time the logging function is called with a function argument that is a more optimized logging function.
+     * @return The logging function
+     */
+    export function debuglog(section: string, callback?: (fn: DebugLoggerFunction) => void): DebugLogger;
+    export const debug: typeof debuglog;
+    /**
+     * Returns `true` if the given `object` is a `Boolean`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isBoolean(1);
+     * // Returns: false
+     * util.isBoolean(0);
+     * // Returns: false
+     * util.isBoolean(false);
+     * // Returns: true
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `typeof value === 'boolean'` instead.
+     */
+    export function isBoolean(object: unknown): object is boolean;
+    /**
+     * Returns `true` if the given `object` is a `Buffer`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isBuffer({ length: 0 });
+     * // Returns: false
+     * util.isBuffer([]);
+     * // Returns: false
+     * util.isBuffer(Buffer.from('hello world'));
+     * // Returns: true
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `isBuffer` instead.
+     */
+    export function isBuffer(object: unknown): object is Buffer;
+    /**
+     * Returns `true` if the given `object` is a `Function`. Otherwise, returns`false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * function Foo() {}
+     * const Bar = () => {};
+     *
+     * util.isFunction({});
+     * // Returns: false
+     * util.isFunction(Foo);
+     * // Returns: true
+     * util.isFunction(Bar);
+     * // Returns: true
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `typeof value === 'function'` instead.
+     */
+    export function isFunction(object: unknown): boolean;
+    /**
+     * Returns `true` if the given `object` is strictly `null`. Otherwise, returns`false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isNull(0);
+     * // Returns: false
+     * util.isNull(undefined);
+     * // Returns: false
+     * util.isNull(null);
+     * // Returns: true
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `value === null` instead.
+     */
+    export function isNull(object: unknown): object is null;
+    /**
+     * Returns `true` if the given `object` is `null` or `undefined`. Otherwise,
+     * returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isNullOrUndefined(0);
+     * // Returns: false
+     * util.isNullOrUndefined(undefined);
+     * // Returns: true
+     * util.isNullOrUndefined(null);
+     * // Returns: true
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `value === undefined || value === null` instead.
+     */
+    export function isNullOrUndefined(object: unknown): object is null | undefined;
+    /**
+     * Returns `true` if the given `object` is a `Number`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isNumber(false);
+     * // Returns: false
+     * util.isNumber(Infinity);
+     * // Returns: true
+     * util.isNumber(0);
+     * // Returns: true
+     * util.isNumber(NaN);
+     * // Returns: true
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `typeof value === 'number'` instead.
+     */
+    export function isNumber(object: unknown): object is number;
+    /**
+     * Returns `true` if the given `object` is strictly an `Object`**and** not a`Function` (even though functions are objects in JavaScript).
+     * Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isObject(5);
+     * // Returns: false
+     * util.isObject(null);
+     * // Returns: false
+     * util.isObject({});
+     * // Returns: true
+     * util.isObject(() => {});
+     * // Returns: false
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Deprecated: Use `value !== null && typeof value === 'object'` instead.
+     */
+    export function isObject(object: unknown): boolean;
+    /**
+     * Returns `true` if the given `object` is a primitive type. Otherwise, returns`false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isPrimitive(5);
+     * // Returns: true
+     * util.isPrimitive('foo');
+     * // Returns: true
+     * util.isPrimitive(false);
+     * // Returns: true
+     * util.isPrimitive(null);
+     * // Returns: true
+     * util.isPrimitive(undefined);
+     * // Returns: true
+     * util.isPrimitive({});
+     * // Returns: false
+     * util.isPrimitive(() => {});
+     * // Returns: false
+     * util.isPrimitive(/^$/);
+     * // Returns: false
+     * util.isPrimitive(new Date());
+     * // Returns: false
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `(typeof value !== 'object' && typeof value !== 'function') || value === null` instead.
+     */
+    export function isPrimitive(object: unknown): boolean;
+    /**
+     * Returns `true` if the given `object` is a `string`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isString('');
+     * // Returns: true
+     * util.isString('foo');
+     * // Returns: true
+     * util.isString(String('foo'));
+     * // Returns: true
+     * util.isString(5);
+     * // Returns: false
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `typeof value === 'string'` instead.
+     */
+    export function isString(object: unknown): object is string;
+    /**
+     * Returns `true` if the given `object` is a `Symbol`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isSymbol(5);
+     * // Returns: false
+     * util.isSymbol('foo');
+     * // Returns: false
+     * util.isSymbol(Symbol('foo'));
+     * // Returns: true
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `typeof value === 'symbol'` instead.
+     */
+    export function isSymbol(object: unknown): object is symbol;
+    /**
+     * Returns `true` if the given `object` is `undefined`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * const foo = undefined;
+     * util.isUndefined(5);
+     * // Returns: false
+     * util.isUndefined(foo);
+     * // Returns: true
+     * util.isUndefined(null);
+     * // Returns: false
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `value === undefined` instead.
+     */
+    export function isUndefined(object: unknown): object is undefined;
+    /**
+     * The `util.deprecate()` method wraps `fn` (which may be a function or class) in
+     * such a way that it is marked as deprecated.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * exports.obsoleteFunction = util.deprecate(() => {
+     *   // Do something here.
+     * }, 'obsoleteFunction() is deprecated. Use newShinyFunction() instead.');
+     * ```
+     *
+     * When called, `util.deprecate()` will return a function that will emit a`DeprecationWarning` using the `'warning'` event. The warning will
+     * be emitted and printed to `stderr` the first time the returned function is
+     * called. After the warning is emitted, the wrapped function is called without
+     * emitting a warning.
+     *
+     * If the same optional `code` is supplied in multiple calls to `util.deprecate()`,
+     * the warning will be emitted only once for that `code`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * const fn1 = util.deprecate(someFunction, someMessage, 'DEP0001');
+     * const fn2 = util.deprecate(someOtherFunction, someOtherMessage, 'DEP0001');
+     * fn1(); // Emits a deprecation warning with code DEP0001
+     * fn2(); // Does not emit a deprecation warning because it has the same code
+     * ```
+     *
+     * If either the `--no-deprecation` or `--no-warnings` command-line flags are
+     * used, or if the `process.noDeprecation` property is set to `true`_prior_ to
+     * the first deprecation warning, the `util.deprecate()` method does nothing.
+     *
+     * If the `--trace-deprecation` or `--trace-warnings` command-line flags are set,
+     * or the `process.traceDeprecation` property is set to `true`, a warning and a
+     * stack trace are printed to `stderr` the first time the deprecated function is
+     * called.
+     *
+     * If the `--throw-deprecation` command-line flag is set, or the`process.throwDeprecation` property is set to `true`, then an exception will be
+     * thrown when the deprecated function is called.
+     *
+     * The `--throw-deprecation` command-line flag and `process.throwDeprecation`property take precedence over `--trace-deprecation` and`process.traceDeprecation`.
+     * @since v0.8.0
+     * @param fn The function that is being deprecated.
+     * @param msg A warning message to display when the deprecated function is invoked.
+     * @param code A deprecation code. See the `list of deprecated APIs` for a list of codes.
+     * @return The deprecated function wrapped to emit a warning.
+     */
+    export function deprecate<T extends Function>(fn: T, msg: string, code?: string): T;
+    /**
+     * Returns `true` if there is deep strict equality between `val1` and `val2`.
+     * Otherwise, returns `false`.
+     *
+     * See `assert.deepStrictEqual()` for more information about deep strict
+     * equality.
+     * @since v9.0.0
+     */
+    export function isDeepStrictEqual(val1: unknown, val2: unknown): boolean;
+    /**
+     * Returns `str` with any ANSI escape codes removed.
+     *
+     * ```js
+     * console.log(util.stripVTControlCharacters('\u001B[4mvalue\u001B[0m'));
+     * // Prints "value"
+     * ```
+     * @since v16.11.0
+     */
+    export function stripVTControlCharacters(str: string): string;
+    /**
+     * Takes an `async` function (or a function that returns a `Promise`) and returns a
+     * function following the error-first callback style, i.e. taking
+     * an `(err, value) => ...` callback as the last argument. In the callback, the
+     * first argument will be the rejection reason (or `null` if the `Promise`resolved), and the second argument will be the resolved value.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * async function fn() {
+     *   return 'hello world';
+     * }
+     * const callbackFunction = util.callbackify(fn);
+     *
+     * callbackFunction((err, ret) => {
+     *   if (err) throw err;
+     *   console.log(ret);
+     * });
+     * ```
+     *
+     * Will print:
+     *
+     * ```text
+     * hello world
+     * ```
+     *
+     * The callback is executed asynchronously, and will have a limited stack trace.
+     * If the callback throws, the process will emit an `'uncaughtException'` event, and if not handled will exit.
+     *
+     * Since `null` has a special meaning as the first argument to a callback, if a
+     * wrapped function rejects a `Promise` with a falsy value as a reason, the value
+     * is wrapped in an `Error` with the original value stored in a field named`reason`.
+     *
+     * ```js
+     * function fn() {
+     *   return Promise.reject(null);
+     * }
+     * const callbackFunction = util.callbackify(fn);
+     *
+     * callbackFunction((err, ret) => {
+     *   // When the Promise was rejected with `null` it is wrapped with an Error and
+     *   // the original value is stored in `reason`.
+     *   err &#x26;&#x26; Object.hasOwn(err, 'reason') &#x26;&#x26; err.reason === null;  // true
+     * });
+     * ```
+     * @since v8.2.0
+     * @param original An `async` function
+     * @return a callback style function
+     */
+    export function callbackify(fn: () => Promise<void>): (callback: (err: NodeJS.ErrnoException) => void) => void;
+    export function callbackify<TResult>(fn: () => Promise<TResult>): (callback: (err: NodeJS.ErrnoException, result: TResult) => void) => void;
+    export function callbackify<T1>(fn: (arg1: T1) => Promise<void>): (arg1: T1, callback: (err: NodeJS.ErrnoException) => void) => void;
+    export function callbackify<T1, TResult>(fn: (arg1: T1) => Promise<TResult>): (arg1: T1, callback: (err: NodeJS.ErrnoException, result: TResult) => void) => void;
+    export function callbackify<T1, T2>(fn: (arg1: T1, arg2: T2) => Promise<void>): (arg1: T1, arg2: T2, callback: (err: NodeJS.ErrnoException) => void) => void;
+    export function callbackify<T1, T2, TResult>(fn: (arg1: T1, arg2: T2) => Promise<TResult>): (arg1: T1, arg2: T2, callback: (err: NodeJS.ErrnoException | null, result: TResult) => void) => void;
+    export function callbackify<T1, T2, T3>(fn: (arg1: T1, arg2: T2, arg3: T3) => Promise<void>): (arg1: T1, arg2: T2, arg3: T3, callback: (err: NodeJS.ErrnoException) => void) => void;
+    export function callbackify<T1, T2, T3, TResult>(
+        fn: (arg1: T1, arg2: T2, arg3: T3) => Promise<TResult>
+    ): (arg1: T1, arg2: T2, arg3: T3, callback: (err: NodeJS.ErrnoException | null, result: TResult) => void) => void;
+    export function callbackify<T1, T2, T3, T4>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4) => Promise<void>
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, callback: (err: NodeJS.ErrnoException) => void) => void;
+    export function callbackify<T1, T2, T3, T4, TResult>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4) => Promise<TResult>
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, callback: (err: NodeJS.ErrnoException | null, result: TResult) => void) => void;
+    export function callbackify<T1, T2, T3, T4, T5>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5) => Promise<void>
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, callback: (err: NodeJS.ErrnoException) => void) => void;
+    export function callbackify<T1, T2, T3, T4, T5, TResult>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5) => Promise<TResult>
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, callback: (err: NodeJS.ErrnoException | null, result: TResult) => void) => void;
+    export function callbackify<T1, T2, T3, T4, T5, T6>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, arg6: T6) => Promise<void>
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, arg6: T6, callback: (err: NodeJS.ErrnoException) => void) => void;
+    export function callbackify<T1, T2, T3, T4, T5, T6, TResult>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, arg6: T6) => Promise<TResult>
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, arg6: T6, callback: (err: NodeJS.ErrnoException | null, result: TResult) => void) => void;
+    export interface CustomPromisifyLegacy<TCustom extends Function> extends Function {
+        __promisify__: TCustom;
+    }
+    export interface CustomPromisifySymbol<TCustom extends Function> extends Function {
+        [promisify.custom]: TCustom;
+    }
+    export type CustomPromisify<TCustom extends Function> = CustomPromisifySymbol<TCustom> | CustomPromisifyLegacy<TCustom>;
+    /**
+     * Takes a function following the common error-first callback style, i.e. taking
+     * an `(err, value) => ...` callback as the last argument, and returns a version
+     * that returns promises.
+     *
+     * ```js
+     * const util = require('util');
+     * const fs = require('fs');
+     *
+     * const stat = util.promisify(fs.stat);
+     * stat('.').then((stats) => {
+     *   // Do something with `stats`
+     * }).catch((error) => {
+     *   // Handle the error.
+     * });
+     * ```
+     *
+     * Or, equivalently using `async function`s:
+     *
+     * ```js
+     * const util = require('util');
+     * const fs = require('fs');
+     *
+     * const stat = util.promisify(fs.stat);
+     *
+     * async function callStat() {
+     *   const stats = await stat('.');
+     *   console.log(`This directory is owned by ${stats.uid}`);
+     * }
+     * ```
+     *
+     * If there is an `original[util.promisify.custom]` property present, `promisify`will return its value, see `Custom promisified functions`.
+     *
+     * `promisify()` assumes that `original` is a function taking a callback as its
+     * final argument in all cases. If `original` is not a function, `promisify()`will throw an error. If `original` is a function but its last argument is not
+     * an error-first callback, it will still be passed an error-first
+     * callback as its last argument.
+     *
+     * Using `promisify()` on class methods or other methods that use `this` may not
+     * work as expected unless handled specially:
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * class Foo {
+     *   constructor() {
+     *     this.a = 42;
+     *   }
+     *
+     *   bar(callback) {
+     *     callback(null, this.a);
+     *   }
+     * }
+     *
+     * const foo = new Foo();
+     *
+     * const naiveBar = util.promisify(foo.bar);
+     * // TypeError: Cannot read property 'a' of undefined
+     * // naiveBar().then(a => console.log(a));
+     *
+     * naiveBar.call(foo).then((a) => console.log(a)); // '42'
+     *
+     * const bindBar = naiveBar.bind(foo);
+     * bindBar().then((a) => console.log(a)); // '42'
+     * ```
+     * @since v8.0.0
+     */
+    export function promisify<TCustom extends Function>(fn: CustomPromisify<TCustom>): TCustom;
+    export function promisify<TResult>(fn: (callback: (err: any, result: TResult) => void) => void): () => Promise<TResult>;
+    export function promisify(fn: (callback: (err?: any) => void) => void): () => Promise<void>;
+    export function promisify<T1, TResult>(fn: (arg1: T1, callback: (err: any, result: TResult) => void) => void): (arg1: T1) => Promise<TResult>;
+    export function promisify<T1>(fn: (arg1: T1, callback: (err?: any) => void) => void): (arg1: T1) => Promise<void>;
+    export function promisify<T1, T2, TResult>(fn: (arg1: T1, arg2: T2, callback: (err: any, result: TResult) => void) => void): (arg1: T1, arg2: T2) => Promise<TResult>;
+    export function promisify<T1, T2>(fn: (arg1: T1, arg2: T2, callback: (err?: any) => void) => void): (arg1: T1, arg2: T2) => Promise<void>;
+    export function promisify<T1, T2, T3, TResult>(fn: (arg1: T1, arg2: T2, arg3: T3, callback: (err: any, result: TResult) => void) => void): (arg1: T1, arg2: T2, arg3: T3) => Promise<TResult>;
+    export function promisify<T1, T2, T3>(fn: (arg1: T1, arg2: T2, arg3: T3, callback: (err?: any) => void) => void): (arg1: T1, arg2: T2, arg3: T3) => Promise<void>;
+    export function promisify<T1, T2, T3, T4, TResult>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, callback: (err: any, result: TResult) => void) => void
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4) => Promise<TResult>;
+    export function promisify<T1, T2, T3, T4>(fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, callback: (err?: any) => void) => void): (arg1: T1, arg2: T2, arg3: T3, arg4: T4) => Promise<void>;
+    export function promisify<T1, T2, T3, T4, T5, TResult>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, callback: (err: any, result: TResult) => void) => void
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5) => Promise<TResult>;
+    export function promisify<T1, T2, T3, T4, T5>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, callback: (err?: any) => void) => void
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5) => Promise<void>;
+    export function promisify(fn: Function): Function;
+    export namespace promisify {
+        /**
+         * That can be used to declare custom promisified variants of functions.
+         */
+        const custom: unique symbol;
+    }
+    /**
+     * An implementation of the [WHATWG Encoding Standard](https://encoding.spec.whatwg.org/) `TextDecoder` API.
+     *
+     * ```js
+     * const decoder = new TextDecoder();
+     * const u8arr = new Uint8Array([72, 101, 108, 108, 111]);
+     * console.log(decoder.decode(u8arr)); // Hello
+     * ```
+     * @since v8.3.0
+     */
+    export class TextDecoder {
+        /**
+         * The encoding supported by the `TextDecoder` instance.
+         */
+        readonly encoding: string;
+        /**
+         * The value will be `true` if decoding errors result in a `TypeError` being
+         * thrown.
+         */
+        readonly fatal: boolean;
+        /**
+         * The value will be `true` if the decoding result will include the byte order
+         * mark.
+         */
+        readonly ignoreBOM: boolean;
+        constructor(
+            encoding?: string,
+            options?: {
+                fatal?: boolean | undefined;
+                ignoreBOM?: boolean | undefined;
+            }
+        );
+        /**
+         * Decodes the `input` and returns a string. If `options.stream` is `true`, any
+         * incomplete byte sequences occurring at the end of the `input` are buffered
+         * internally and emitted after the next call to `textDecoder.decode()`.
+         *
+         * If `textDecoder.fatal` is `true`, decoding errors that occur will result in a`TypeError` being thrown.
+         * @param input An `ArrayBuffer`, `DataView` or `TypedArray` instance containing the encoded data.
+         */
+        decode(
+            input?: NodeJS.ArrayBufferView | ArrayBuffer | null,
+            options?: {
+                stream?: boolean | undefined;
+            }
+        ): string;
+    }
+    export interface EncodeIntoResult {
+        /**
+         * The read Unicode code units of input.
+         */
+        read: number;
+        /**
+         * The written UTF-8 bytes of output.
+         */
+        written: number;
+    }
+    export { types };
+    /**
+     * An implementation of the [WHATWG Encoding Standard](https://encoding.spec.whatwg.org/) `TextEncoder` API. All
+     * instances of `TextEncoder` only support UTF-8 encoding.
+     *
+     * ```js
+     * const encoder = new TextEncoder();
+     * const uint8array = encoder.encode('this is some data');
+     * ```
+     *
+     * The `TextEncoder` class is also available on the global object.
+     * @since v8.3.0
+     */
+    export class TextEncoder {
+        /**
+         * The encoding supported by the `TextEncoder` instance. Always set to `'utf-8'`.
+         */
+        readonly encoding: string;
+        /**
+         * UTF-8 encodes the `input` string and returns a `Uint8Array` containing the
+         * encoded bytes.
+         * @param [input='an empty string'] The text to encode.
+         */
+        encode(input?: string): Uint8Array;
+        /**
+         * UTF-8 encodes the `src` string to the `dest` Uint8Array and returns an object
+         * containing the read Unicode code units and written UTF-8 bytes.
+         *
+         * ```js
+         * const encoder = new TextEncoder();
+         * const src = 'this is some data';
+         * const dest = new Uint8Array(10);
+         * const { read, written } = encoder.encodeInto(src, dest);
+         * ```
+         * @param src The text to encode.
+         * @param dest The array to hold the encode result.
+         */
+        encodeInto(src: string, dest: Uint8Array): EncodeIntoResult;
+    }
+
+    /**
+     * Provides a high-level API for command-line argument parsing. Takes a
+     * specification for the expected arguments and returns a structured object
+     * with the parsed values and positionals.
+     *
+     * `config` provides arguments for parsing and configures the parser. It
+     * supports the following properties:
+     *
+     *   - `args` The array of argument strings. **Default:** `process.argv` with
+     *     `execPath` and `filename` removed.
+     *   - `options` Arguments known to the parser. Keys of `options` are the long
+     *     names of options and values are objects accepting the following properties:
+     *
+     *     - `type` Type of argument, which must be either `boolean` (for options
+     *        which do not take values) or `string` (for options which do).
+     *     - `multiple` Whether this option can be provided multiple
+     *       times. If `true`, all values will be collected in an array. If
+     *       `false`, values for the option are last-wins. **Default:** `false`.
+     *     - `short` A single character alias for the option.
+     *
+     *   - `strict`: Whether an error should be thrown when unknown arguments
+     *     are encountered, or when arguments are passed that do not match the
+     *     `type` configured in `options`. **Default:** `true`.
+     *   - `allowPositionals`: Whether this command accepts positional arguments.
+     *     **Default:** `false` if `strict` is `true`, otherwise `true`.
+     *   - `tokens`: Whether tokens {boolean} Return the parsed tokens. This is useful
+     *     for extending the built-in behavior, from adding additional checks through
+     *     to reprocessing the tokens in different ways.
+     *     **Default:** `false`.
+     *
+     * @returns The parsed command line arguments:
+     *
+     *   - `values` A mapping of parsed option names with their string
+     *     or boolean values.
+     *   - `positionals` Positional arguments.
+     *   - `tokens` Detailed parse information (only if `tokens` was specified).
+     *
+     */
+    export function parseArgs<T extends ParseArgsConfig>(config: T): ParsedResults<T>;
+
+    interface ParseArgsOptionConfig {
+        type: 'string' | 'boolean';
+        short?: string;
+        multiple?: boolean;
+    }
+
+    interface ParseArgsOptionsConfig {
+        [longOption: string]: ParseArgsOptionConfig;
+    }
+
+    export interface ParseArgsConfig {
+        strict?: boolean;
+        allowPositionals?: boolean;
+        tokens?: boolean;
+        options?: ParseArgsOptionsConfig;
+        args?: string[];
+    }
+
+    /*
+    IfDefaultsTrue and IfDefaultsFalse are helpers to handle default values for missing boolean properties.
+    TypeScript does not have exact types for objects: https://github.com/microsoft/TypeScript/issues/12936
+    This means it is impossible to distinguish between "field X is definitely not present" and "field X may or may not be present".
+    But we expect users to generally provide their config inline or `as const`, which means TS will always know whether a given field is present.
+    So this helper treats "not definitely present" (i.e., not `extends boolean`) as being "definitely not present", i.e. it should have its default value.
+    This is technically incorrect but is a much nicer UX for the common case.
+    The IfDefaultsTrue version is for things which default to true; the IfDefaultsFalse version is for things which default to false.
+    */
+    type IfDefaultsTrue<T, IfTrue, IfFalse> = T extends true
+        ? IfTrue
+        : T extends false
+        ? IfFalse
+        : IfTrue;
+
+    // we put the `extends false` condition first here because `undefined` compares like `any` when `strictNullChecks: false`
+    type IfDefaultsFalse<T, IfTrue, IfFalse> = T extends false
+        ? IfFalse
+        : T extends true
+        ? IfTrue
+        : IfFalse;
+
+    type ExtractOptionValue<T extends ParseArgsConfig, O extends ParseArgsOptionConfig> = IfDefaultsTrue<
+        T['strict'],
+        O['type'] extends 'string' ? string : O['type'] extends 'boolean' ? boolean : string | boolean,
+        string | boolean
+    >;
+
+    type ParsedValues<T extends ParseArgsConfig> =
+        & IfDefaultsTrue<T['strict'], unknown, { [longOption: string]: undefined | string | boolean }>
+        & (T['options'] extends ParseArgsOptionsConfig
+            ? {
+                -readonly [LongOption in keyof T['options']]: IfDefaultsFalse<
+                    T['options'][LongOption]['multiple'],
+                    undefined | Array<ExtractOptionValue<T, T['options'][LongOption]>>,
+                    undefined | ExtractOptionValue<T, T['options'][LongOption]>
+                >;
+            }
+            : {});
+
+    type ParsedPositionals<T extends ParseArgsConfig> = IfDefaultsTrue<
+        T['strict'],
+        IfDefaultsFalse<T['allowPositionals'], string[], []>,
+        IfDefaultsTrue<T['allowPositionals'], string[], []>
+    >;
+
+    type PreciseTokenForOptions<
+        K extends string,
+        O extends ParseArgsOptionConfig,
+    > = O['type'] extends 'string'
+        ? {
+              kind: 'option';
+              index: number;
+              name: K;
+              rawName: string;
+              value: string;
+              inlineValue: boolean;
+          }
+        : O['type'] extends 'boolean'
+        ? {
+              kind: 'option';
+              index: number;
+              name: K;
+              rawName: string;
+              value: undefined;
+              inlineValue: undefined;
+          }
+        : OptionToken & { name: K };
+
+    type TokenForOptions<
+        T extends ParseArgsConfig,
+        K extends keyof T['options'] = keyof T['options'],
+    > = K extends unknown
+        ? T['options'] extends ParseArgsOptionsConfig
+            ? PreciseTokenForOptions<K & string, T['options'][K]>
+            : OptionToken
+        : never;
+
+    type ParsedOptionToken<T extends ParseArgsConfig> = IfDefaultsTrue<T['strict'], TokenForOptions<T>, OptionToken>;
+
+    type ParsedPositionalToken<T extends ParseArgsConfig> = IfDefaultsTrue<
+        T['strict'],
+        IfDefaultsFalse<T['allowPositionals'], { kind: 'positional'; index: number; value: string }, never>,
+        IfDefaultsTrue<T['allowPositionals'], { kind: 'positional'; index: number; value: string }, never>
+    >;
+
+    type ParsedTokens<T extends ParseArgsConfig> = Array<
+        ParsedOptionToken<T> | ParsedPositionalToken<T> | { kind: 'option-terminator'; index: number }
+    >;
+
+    type PreciseParsedResults<T extends ParseArgsConfig> = IfDefaultsFalse<
+        T['tokens'],
+        {
+            values: ParsedValues<T>;
+            positionals: ParsedPositionals<T>;
+            tokens: ParsedTokens<T>;
+        },
+        {
+            values: ParsedValues<T>;
+            positionals: ParsedPositionals<T>;
+        }
+    >;
+
+    type OptionToken =
+        | { kind: 'option'; index: number; name: string; rawName: string; value: string; inlineValue: boolean }
+        | {
+              kind: 'option';
+              index: number;
+              name: string;
+              rawName: string;
+              value: undefined;
+              inlineValue: undefined;
+          };
+
+    type Token =
+        | OptionToken
+        | { kind: 'positional'; index: number; value: string }
+        | { kind: 'option-terminator'; index: number };
+
+    // If ParseArgsConfig extends T, then the user passed config constructed elsewhere.
+    // So we can't rely on the `"not definitely present" implies "definitely not present"` assumption mentioned above.
+    type ParsedResults<T extends ParseArgsConfig> = ParseArgsConfig extends T
+        ? {
+              values: { [longOption: string]: undefined | string | boolean | Array<string | boolean> };
+              positionals: string[];
+              tokens?: Token[];
+          }
+        : PreciseParsedResults<T>;
+}
+declare module 'util/types' {
+    export * from 'util/types';
+}
+declare module 'util/types' {
+    import { KeyObject, webcrypto } from 'node:crypto';
+    /**
+     * Returns `true` if the value is a built-in [`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) or
+     * [`SharedArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer) instance.
+     *
+     * See also `util.types.isArrayBuffer()` and `util.types.isSharedArrayBuffer()`.
+     *
+     * ```js
+     * util.types.isAnyArrayBuffer(new ArrayBuffer());  // Returns true
+     * util.types.isAnyArrayBuffer(new SharedArrayBuffer());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isAnyArrayBuffer(object: unknown): object is ArrayBufferLike;
+    /**
+     * Returns `true` if the value is an `arguments` object.
+     *
+     * ```js
+     * function foo() {
+     *   util.types.isArgumentsObject(arguments);  // Returns true
+     * }
+     * ```
+     * @since v10.0.0
+     */
+    function isArgumentsObject(object: unknown): object is IArguments;
+    /**
+     * Returns `true` if the value is a built-in [`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) instance.
+     * This does _not_ include [`SharedArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer) instances. Usually, it is
+     * desirable to test for both; See `util.types.isAnyArrayBuffer()` for that.
+     *
+     * ```js
+     * util.types.isArrayBuffer(new ArrayBuffer());  // Returns true
+     * util.types.isArrayBuffer(new SharedArrayBuffer());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isArrayBuffer(object: unknown): object is ArrayBuffer;
+    /**
+     * Returns `true` if the value is an instance of one of the [`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) views, such as typed
+     * array objects or [`DataView`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView). Equivalent to
+     * [`ArrayBuffer.isView()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/isView).
+     *
+     * ```js
+     * util.types.isArrayBufferView(new Int8Array());  // true
+     * util.types.isArrayBufferView(Buffer.from('hello world')); // true
+     * util.types.isArrayBufferView(new DataView(new ArrayBuffer(16)));  // true
+     * util.types.isArrayBufferView(new ArrayBuffer());  // false
+     * ```
+     * @since v10.0.0
+     */
+    function isArrayBufferView(object: unknown): object is NodeJS.ArrayBufferView;
+    /**
+     * Returns `true` if the value is an [async function](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function).
+     * This only reports back what the JavaScript engine is seeing;
+     * in particular, the return value may not match the original source code if
+     * a transpilation tool was used.
+     *
+     * ```js
+     * util.types.isAsyncFunction(function foo() {});  // Returns false
+     * util.types.isAsyncFunction(async function foo() {});  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isAsyncFunction(object: unknown): boolean;
+    /**
+     * Returns `true` if the value is a `BigInt64Array` instance.
+     *
+     * ```js
+     * util.types.isBigInt64Array(new BigInt64Array());   // Returns true
+     * util.types.isBigInt64Array(new BigUint64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isBigInt64Array(value: unknown): value is BigInt64Array;
+    /**
+     * Returns `true` if the value is a `BigUint64Array` instance.
+     *
+     * ```js
+     * util.types.isBigUint64Array(new BigInt64Array());   // Returns false
+     * util.types.isBigUint64Array(new BigUint64Array());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isBigUint64Array(value: unknown): value is BigUint64Array;
+    /**
+     * Returns `true` if the value is a boolean object, e.g. created
+     * by `new Boolean()`.
+     *
+     * ```js
+     * util.types.isBooleanObject(false);  // Returns false
+     * util.types.isBooleanObject(true);   // Returns false
+     * util.types.isBooleanObject(new Boolean(false)); // Returns true
+     * util.types.isBooleanObject(new Boolean(true));  // Returns true
+     * util.types.isBooleanObject(Boolean(false)); // Returns false
+     * util.types.isBooleanObject(Boolean(true));  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isBooleanObject(object: unknown): object is Boolean;
+    /**
+     * Returns `true` if the value is any boxed primitive object, e.g. created
+     * by `new Boolean()`, `new String()` or `Object(Symbol())`.
+     *
+     * For example:
+     *
+     * ```js
+     * util.types.isBoxedPrimitive(false); // Returns false
+     * util.types.isBoxedPrimitive(new Boolean(false)); // Returns true
+     * util.types.isBoxedPrimitive(Symbol('foo')); // Returns false
+     * util.types.isBoxedPrimitive(Object(Symbol('foo'))); // Returns true
+     * util.types.isBoxedPrimitive(Object(BigInt(5))); // Returns true
+     * ```
+     * @since v10.11.0
+     */
+    function isBoxedPrimitive(object: unknown): object is String | Number | BigInt | Boolean | Symbol;
+    /**
+     * Returns `true` if the value is a built-in [`DataView`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView) instance.
+     *
+     * ```js
+     * const ab = new ArrayBuffer(20);
+     * util.types.isDataView(new DataView(ab));  // Returns true
+     * util.types.isDataView(new Float64Array());  // Returns false
+     * ```
+     *
+     * See also [`ArrayBuffer.isView()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/isView).
+     * @since v10.0.0
+     */
+    function isDataView(object: unknown): object is DataView;
+    /**
+     * Returns `true` if the value is a built-in [`Date`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date) instance.
+     *
+     * ```js
+     * util.types.isDate(new Date());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isDate(object: unknown): object is Date;
+    /**
+     * Returns `true` if the value is a native `External` value.
+     *
+     * A native `External` value is a special type of object that contains a
+     * raw C++ pointer (`void*`) for access from native code, and has no other
+     * properties. Such objects are created either by Node.js internals or native
+     * addons. In JavaScript, they are [frozen](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze) objects with a`null` prototype.
+     *
+     * ```c
+     * #include <js_native_api.h>
+     * #include <stdlib.h>
+     * napi_value result;
+     * static napi_value MyNapi(napi_env env, napi_callback_info info) {
+     *   int* raw = (int*) malloc(1024);
+     *   napi_status status = napi_create_external(env, (void*) raw, NULL, NULL, &#x26;result);
+     *   if (status != napi_ok) {
+     *     napi_throw_error(env, NULL, "napi_create_external failed");
+     *     return NULL;
+     *   }
+     *   return result;
+     * }
+     * ...
+     * DECLARE_NAPI_PROPERTY("myNapi", MyNapi)
+     * ...
+     * ```
+     *
+     * ```js
+     * const native = require('napi_addon.node');
+     * const data = native.myNapi();
+     * util.types.isExternal(data); // returns true
+     * util.types.isExternal(0); // returns false
+     * util.types.isExternal(new String('foo')); // returns false
+     * ```
+     *
+     * For further information on `napi_create_external`, refer to `napi_create_external()`.
+     * @since v10.0.0
+     */
+    function isExternal(object: unknown): boolean;
+    /**
+     * Returns `true` if the value is a built-in [`Float32Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float32Array) instance.
+     *
+     * ```js
+     * util.types.isFloat32Array(new ArrayBuffer());  // Returns false
+     * util.types.isFloat32Array(new Float32Array());  // Returns true
+     * util.types.isFloat32Array(new Float64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isFloat32Array(object: unknown): object is Float32Array;
+    /**
+     * Returns `true` if the value is a built-in [`Float64Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float64Array) instance.
+     *
+     * ```js
+     * util.types.isFloat64Array(new ArrayBuffer());  // Returns false
+     * util.types.isFloat64Array(new Uint8Array());  // Returns false
+     * util.types.isFloat64Array(new Float64Array());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isFloat64Array(object: unknown): object is Float64Array;
+    /**
+     * Returns `true` if the value is a generator function.
+     * This only reports back what the JavaScript engine is seeing;
+     * in particular, the return value may not match the original source code if
+     * a transpilation tool was used.
+     *
+     * ```js
+     * util.types.isGeneratorFunction(function foo() {});  // Returns false
+     * util.types.isGeneratorFunction(function* foo() {});  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isGeneratorFunction(object: unknown): object is GeneratorFunction;
+    /**
+     * Returns `true` if the value is a generator object as returned from a
+     * built-in generator function.
+     * This only reports back what the JavaScript engine is seeing;
+     * in particular, the return value may not match the original source code if
+     * a transpilation tool was used.
+     *
+     * ```js
+     * function* foo() {}
+     * const generator = foo();
+     * util.types.isGeneratorObject(generator);  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isGeneratorObject(object: unknown): object is Generator;
+    /**
+     * Returns `true` if the value is a built-in [`Int8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int8Array) instance.
+     *
+     * ```js
+     * util.types.isInt8Array(new ArrayBuffer());  // Returns false
+     * util.types.isInt8Array(new Int8Array());  // Returns true
+     * util.types.isInt8Array(new Float64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isInt8Array(object: unknown): object is Int8Array;
+    /**
+     * Returns `true` if the value is a built-in [`Int16Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int16Array) instance.
+     *
+     * ```js
+     * util.types.isInt16Array(new ArrayBuffer());  // Returns false
+     * util.types.isInt16Array(new Int16Array());  // Returns true
+     * util.types.isInt16Array(new Float64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isInt16Array(object: unknown): object is Int16Array;
+    /**
+     * Returns `true` if the value is a built-in [`Int32Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int32Array) instance.
+     *
+     * ```js
+     * util.types.isInt32Array(new ArrayBuffer());  // Returns false
+     * util.types.isInt32Array(new Int32Array());  // Returns true
+     * util.types.isInt32Array(new Float64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isInt32Array(object: unknown): object is Int32Array;
+    /**
+     * Returns `true` if the value is a built-in [`Map`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map) instance.
+     *
+     * ```js
+     * util.types.isMap(new Map());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isMap<T>(object: T | {}): object is T extends ReadonlyMap<any, any> ? (unknown extends T ? never : ReadonlyMap<any, any>) : Map<unknown, unknown>;
+    /**
+     * Returns `true` if the value is an iterator returned for a built-in [`Map`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map) instance.
+     *
+     * ```js
+     * const map = new Map();
+     * util.types.isMapIterator(map.keys());  // Returns true
+     * util.types.isMapIterator(map.values());  // Returns true
+     * util.types.isMapIterator(map.entries());  // Returns true
+     * util.types.isMapIterator(map[Symbol.iterator]());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isMapIterator(object: unknown): boolean;
+    /**
+     * Returns `true` if the value is an instance of a [Module Namespace Object](https://tc39.github.io/ecma262/#sec-module-namespace-exotic-objects).
+     *
+     * ```js
+     * import * as ns from './a.js';
+     *
+     * util.types.isModuleNamespaceObject(ns);  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isModuleNamespaceObject(value: unknown): boolean;
+    /**
+     * Returns `true` if the value is an instance of a built-in `Error` type.
+     *
+     * ```js
+     * util.types.isNativeError(new Error());  // Returns true
+     * util.types.isNativeError(new TypeError());  // Returns true
+     * util.types.isNativeError(new RangeError());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isNativeError(object: unknown): object is Error;
+    /**
+     * Returns `true` if the value is a number object, e.g. created
+     * by `new Number()`.
+     *
+     * ```js
+     * util.types.isNumberObject(0);  // Returns false
+     * util.types.isNumberObject(new Number(0));   // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isNumberObject(object: unknown): object is Number;
+    /**
+     * Returns `true` if the value is a built-in [`Promise`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise).
+     *
+     * ```js
+     * util.types.isPromise(Promise.resolve(42));  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isPromise(object: unknown): object is Promise<unknown>;
+    /**
+     * Returns `true` if the value is a [`Proxy`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy) instance.
+     *
+     * ```js
+     * const target = {};
+     * const proxy = new Proxy(target, {});
+     * util.types.isProxy(target);  // Returns false
+     * util.types.isProxy(proxy);  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isProxy(object: unknown): boolean;
+    /**
+     * Returns `true` if the value is a regular expression object.
+     *
+     * ```js
+     * util.types.isRegExp(/abc/);  // Returns true
+     * util.types.isRegExp(new RegExp('abc'));  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isRegExp(object: unknown): object is RegExp;
+    /**
+     * Returns `true` if the value is a built-in [`Set`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set) instance.
+     *
+     * ```js
+     * util.types.isSet(new Set());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isSet<T>(object: T | {}): object is T extends ReadonlySet<any> ? (unknown extends T ? never : ReadonlySet<any>) : Set<unknown>;
+    /**
+     * Returns `true` if the value is an iterator returned for a built-in [`Set`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set) instance.
+     *
+     * ```js
+     * const set = new Set();
+     * util.types.isSetIterator(set.keys());  // Returns true
+     * util.types.isSetIterator(set.values());  // Returns true
+     * util.types.isSetIterator(set.entries());  // Returns true
+     * util.types.isSetIterator(set[Symbol.iterator]());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isSetIterator(object: unknown): boolean;
+    /**
+     * Returns `true` if the value is a built-in [`SharedArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer) instance.
+     * This does _not_ include [`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) instances. Usually, it is
+     * desirable to test for both; See `util.types.isAnyArrayBuffer()` for that.
+     *
+     * ```js
+     * util.types.isSharedArrayBuffer(new ArrayBuffer());  // Returns false
+     * util.types.isSharedArrayBuffer(new SharedArrayBuffer());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isSharedArrayBuffer(object: unknown): object is SharedArrayBuffer;
+    /**
+     * Returns `true` if the value is a string object, e.g. created
+     * by `new String()`.
+     *
+     * ```js
+     * util.types.isStringObject('foo');  // Returns false
+     * util.types.isStringObject(new String('foo'));   // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isStringObject(object: unknown): object is String;
+    /**
+     * Returns `true` if the value is a symbol object, created
+     * by calling `Object()` on a `Symbol` primitive.
+     *
+     * ```js
+     * const symbol = Symbol('foo');
+     * util.types.isSymbolObject(symbol);  // Returns false
+     * util.types.isSymbolObject(Object(symbol));   // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isSymbolObject(object: unknown): object is Symbol;
+    /**
+     * Returns `true` if the value is a built-in [`TypedArray`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray) instance.
+     *
+     * ```js
+     * util.types.isTypedArray(new ArrayBuffer());  // Returns false
+     * util.types.isTypedArray(new Uint8Array());  // Returns true
+     * util.types.isTypedArray(new Float64Array());  // Returns true
+     * ```
+     *
+     * See also [`ArrayBuffer.isView()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/isView).
+     * @since v10.0.0
+     */
+    function isTypedArray(object: unknown): object is NodeJS.TypedArray;
+    /**
+     * Returns `true` if the value is a built-in [`Uint8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array) instance.
+     *
+     * ```js
+     * util.types.isUint8Array(new ArrayBuffer());  // Returns false
+     * util.types.isUint8Array(new Uint8Array());  // Returns true
+     * util.types.isUint8Array(new Float64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isUint8Array(object: unknown): object is Uint8Array;
+    /**
+     * Returns `true` if the value is a built-in [`Uint8ClampedArray`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8ClampedArray) instance.
+     *
+     * ```js
+     * util.types.isUint8ClampedArray(new ArrayBuffer());  // Returns false
+     * util.types.isUint8ClampedArray(new Uint8ClampedArray());  // Returns true
+     * util.types.isUint8ClampedArray(new Float64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isUint8ClampedArray(object: unknown): object is Uint8ClampedArray;
+    /**
+     * Returns `true` if the value is a built-in [`Uint16Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint16Array) instance.
+     *
+     * ```js
+     * util.types.isUint16Array(new ArrayBuffer());  // Returns false
+     * util.types.isUint16Array(new Uint16Array());  // Returns true
+     * util.types.isUint16Array(new Float64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isUint16Array(object: unknown): object is Uint16Array;
+    /**
+     * Returns `true` if the value is a built-in [`Uint32Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint32Array) instance.
+     *
+     * ```js
+     * util.types.isUint32Array(new ArrayBuffer());  // Returns false
+     * util.types.isUint32Array(new Uint32Array());  // Returns true
+     * util.types.isUint32Array(new Float64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isUint32Array(object: unknown): object is Uint32Array;
+    /**
+     * Returns `true` if the value is a built-in [`WeakMap`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap) instance.
+     *
+     * ```js
+     * util.types.isWeakMap(new WeakMap());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isWeakMap(object: unknown): object is WeakMap<object, unknown>;
+    /**
+     * Returns `true` if the value is a built-in [`WeakSet`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet) instance.
+     *
+     * ```js
+     * util.types.isWeakSet(new WeakSet());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isWeakSet(object: unknown): object is WeakSet<object>;
+    /**
+     * Returns `true` if `value` is a `KeyObject`, `false` otherwise.
+     * @since v16.2.0
+     */
+    function isKeyObject(object: unknown): object is KeyObject;
+    /**
+     * Returns `true` if `value` is a `CryptoKey`, `false` otherwise.
+     * @since v16.2.0
+     */
+    function isCryptoKey(object: unknown): object is webcrypto.CryptoKey;
+}
+declare module 'node:util' {
+    export * from 'util';
+}
+declare module 'node:util/types' {
+    export * from 'util/types';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/v8.d.ts b/igv_component/node_modules/@types/node/ts4.8/v8.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6685dc253c009a0a2865811f959233b8dc17aa9a
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/v8.d.ts
@@ -0,0 +1,396 @@
+/**
+ * The `v8` module exposes APIs that are specific to the version of [V8](https://developers.google.com/v8/) built into the Node.js binary. It can be accessed using:
+ *
+ * ```js
+ * const v8 = require('v8');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/v8.js)
+ */
+declare module 'v8' {
+    import { Readable } from 'node:stream';
+    interface HeapSpaceInfo {
+        space_name: string;
+        space_size: number;
+        space_used_size: number;
+        space_available_size: number;
+        physical_space_size: number;
+    }
+    // ** Signifies if the --zap_code_space option is enabled or not.  1 == enabled, 0 == disabled. */
+    type DoesZapCodeSpaceFlag = 0 | 1;
+    interface HeapInfo {
+        total_heap_size: number;
+        total_heap_size_executable: number;
+        total_physical_size: number;
+        total_available_size: number;
+        used_heap_size: number;
+        heap_size_limit: number;
+        malloced_memory: number;
+        peak_malloced_memory: number;
+        does_zap_garbage: DoesZapCodeSpaceFlag;
+        number_of_native_contexts: number;
+        number_of_detached_contexts: number;
+    }
+    interface HeapCodeStatistics {
+        code_and_metadata_size: number;
+        bytecode_and_metadata_size: number;
+        external_script_source_size: number;
+    }
+    /**
+     * Returns an integer representing a version tag derived from the V8 version,
+     * command-line flags, and detected CPU features. This is useful for determining
+     * whether a `vm.Script` `cachedData` buffer is compatible with this instance
+     * of V8.
+     *
+     * ```js
+     * console.log(v8.cachedDataVersionTag()); // 3947234607
+     * // The value returned by v8.cachedDataVersionTag() is derived from the V8
+     * // version, command-line flags, and detected CPU features. Test that the value
+     * // does indeed update when flags are toggled.
+     * v8.setFlagsFromString('--allow_natives_syntax');
+     * console.log(v8.cachedDataVersionTag()); // 183726201
+     * ```
+     * @since v8.0.0
+     */
+    function cachedDataVersionTag(): number;
+    /**
+     * Returns an object with the following properties:
+     *
+     * `does_zap_garbage` is a 0/1 boolean, which signifies whether the`--zap_code_space` option is enabled or not. This makes V8 overwrite heap
+     * garbage with a bit pattern. The RSS footprint (resident set size) gets bigger
+     * because it continuously touches all heap pages and that makes them less likely
+     * to get swapped out by the operating system.
+     *
+     * `number_of_native_contexts` The value of native\_context is the number of the
+     * top-level contexts currently active. Increase of this number over time indicates
+     * a memory leak.
+     *
+     * `number_of_detached_contexts` The value of detached\_context is the number
+     * of contexts that were detached and not yet garbage collected. This number
+     * being non-zero indicates a potential memory leak.
+     *
+     * ```js
+     * {
+     *   total_heap_size: 7326976,
+     *   total_heap_size_executable: 4194304,
+     *   total_physical_size: 7326976,
+     *   total_available_size: 1152656,
+     *   used_heap_size: 3476208,
+     *   heap_size_limit: 1535115264,
+     *   malloced_memory: 16384,
+     *   peak_malloced_memory: 1127496,
+     *   does_zap_garbage: 0,
+     *   number_of_native_contexts: 1,
+     *   number_of_detached_contexts: 0
+     * }
+     * ```
+     * @since v1.0.0
+     */
+    function getHeapStatistics(): HeapInfo;
+    /**
+     * Returns statistics about the V8 heap spaces, i.e. the segments which make up
+     * the V8 heap. Neither the ordering of heap spaces, nor the availability of a
+     * heap space can be guaranteed as the statistics are provided via the
+     * V8[`GetHeapSpaceStatistics`](https://v8docs.nodesource.com/node-13.2/d5/dda/classv8_1_1_isolate.html#ac673576f24fdc7a33378f8f57e1d13a4) function and may change from one V8 version to the
+     * next.
+     *
+     * The value returned is an array of objects containing the following properties:
+     *
+     * ```json
+     * [
+     *   {
+     *     "space_name": "new_space",
+     *     "space_size": 2063872,
+     *     "space_used_size": 951112,
+     *     "space_available_size": 80824,
+     *     "physical_space_size": 2063872
+     *   },
+     *   {
+     *     "space_name": "old_space",
+     *     "space_size": 3090560,
+     *     "space_used_size": 2493792,
+     *     "space_available_size": 0,
+     *     "physical_space_size": 3090560
+     *   },
+     *   {
+     *     "space_name": "code_space",
+     *     "space_size": 1260160,
+     *     "space_used_size": 644256,
+     *     "space_available_size": 960,
+     *     "physical_space_size": 1260160
+     *   },
+     *   {
+     *     "space_name": "map_space",
+     *     "space_size": 1094160,
+     *     "space_used_size": 201608,
+     *     "space_available_size": 0,
+     *     "physical_space_size": 1094160
+     *   },
+     *   {
+     *     "space_name": "large_object_space",
+     *     "space_size": 0,
+     *     "space_used_size": 0,
+     *     "space_available_size": 1490980608,
+     *     "physical_space_size": 0
+     *   }
+     * ]
+     * ```
+     * @since v6.0.0
+     */
+    function getHeapSpaceStatistics(): HeapSpaceInfo[];
+    /**
+     * The `v8.setFlagsFromString()` method can be used to programmatically set
+     * V8 command-line flags. This method should be used with care. Changing settings
+     * after the VM has started may result in unpredictable behavior, including
+     * crashes and data loss; or it may simply do nothing.
+     *
+     * The V8 options available for a version of Node.js may be determined by running`node --v8-options`.
+     *
+     * Usage:
+     *
+     * ```js
+     * // Print GC events to stdout for one minute.
+     * const v8 = require('v8');
+     * v8.setFlagsFromString('--trace_gc');
+     * setTimeout(() => { v8.setFlagsFromString('--notrace_gc'); }, 60e3);
+     * ```
+     * @since v1.0.0
+     */
+    function setFlagsFromString(flags: string): void;
+    /**
+     * Generates a snapshot of the current V8 heap and returns a Readable
+     * Stream that may be used to read the JSON serialized representation.
+     * This JSON stream format is intended to be used with tools such as
+     * Chrome DevTools. The JSON schema is undocumented and specific to the
+     * V8 engine. Therefore, the schema may change from one version of V8 to the next.
+     *
+     * Creating a heap snapshot requires memory about twice the size of the heap at
+     * the time the snapshot is created. This results in the risk of OOM killers
+     * terminating the process.
+     *
+     * Generating a snapshot is a synchronous operation which blocks the event loop
+     * for a duration depending on the heap size.
+     *
+     * ```js
+     * // Print heap snapshot to the console
+     * const v8 = require('v8');
+     * const stream = v8.getHeapSnapshot();
+     * stream.pipe(process.stdout);
+     * ```
+     * @since v11.13.0
+     * @return A Readable Stream containing the V8 heap snapshot
+     */
+    function getHeapSnapshot(): Readable;
+    /**
+     * Generates a snapshot of the current V8 heap and writes it to a JSON
+     * file. This file is intended to be used with tools such as Chrome
+     * DevTools. The JSON schema is undocumented and specific to the V8
+     * engine, and may change from one version of V8 to the next.
+     *
+     * A heap snapshot is specific to a single V8 isolate. When using `worker threads`, a heap snapshot generated from the main thread will
+     * not contain any information about the workers, and vice versa.
+     *
+     * Creating a heap snapshot requires memory about twice the size of the heap at
+     * the time the snapshot is created. This results in the risk of OOM killers
+     * terminating the process.
+     *
+     * Generating a snapshot is a synchronous operation which blocks the event loop
+     * for a duration depending on the heap size.
+     *
+     * ```js
+     * const { writeHeapSnapshot } = require('v8');
+     * const {
+     *   Worker,
+     *   isMainThread,
+     *   parentPort
+     * } = require('worker_threads');
+     *
+     * if (isMainThread) {
+     *   const worker = new Worker(__filename);
+     *
+     *   worker.once('message', (filename) => {
+     *     console.log(`worker heapdump: ${filename}`);
+     *     // Now get a heapdump for the main thread.
+     *     console.log(`main thread heapdump: ${writeHeapSnapshot()}`);
+     *   });
+     *
+     *   // Tell the worker to create a heapdump.
+     *   worker.postMessage('heapdump');
+     * } else {
+     *   parentPort.once('message', (message) => {
+     *     if (message === 'heapdump') {
+     *       // Generate a heapdump for the worker
+     *       // and return the filename to the parent.
+     *       parentPort.postMessage(writeHeapSnapshot());
+     *     }
+     *   });
+     * }
+     * ```
+     * @since v11.13.0
+     * @param filename The file path where the V8 heap snapshot is to be saved. If not specified, a file name with the pattern `'Heap-${yyyymmdd}-${hhmmss}-${pid}-${thread_id}.heapsnapshot'` will be
+     * generated, where `{pid}` will be the PID of the Node.js process, `{thread_id}` will be `0` when `writeHeapSnapshot()` is called from the main Node.js thread or the id of a
+     * worker thread.
+     * @return The filename where the snapshot was saved.
+     */
+    function writeHeapSnapshot(filename?: string): string;
+    /**
+     * Returns an object with the following properties:
+     *
+     * ```js
+     * {
+     *   code_and_metadata_size: 212208,
+     *   bytecode_and_metadata_size: 161368,
+     *   external_script_source_size: 1410794
+     * }
+     * ```
+     * @since v12.8.0
+     */
+    function getHeapCodeStatistics(): HeapCodeStatistics;
+    /**
+     * @since v8.0.0
+     */
+    class Serializer {
+        /**
+         * Writes out a header, which includes the serialization format version.
+         */
+        writeHeader(): void;
+        /**
+         * Serializes a JavaScript value and adds the serialized representation to the
+         * internal buffer.
+         *
+         * This throws an error if `value` cannot be serialized.
+         */
+        writeValue(val: any): boolean;
+        /**
+         * Returns the stored internal buffer. This serializer should not be used once
+         * the buffer is released. Calling this method results in undefined behavior
+         * if a previous write has failed.
+         */
+        releaseBuffer(): Buffer;
+        /**
+         * Marks an `ArrayBuffer` as having its contents transferred out of band.
+         * Pass the corresponding `ArrayBuffer` in the deserializing context to `deserializer.transferArrayBuffer()`.
+         * @param id A 32-bit unsigned integer.
+         * @param arrayBuffer An `ArrayBuffer` instance.
+         */
+        transferArrayBuffer(id: number, arrayBuffer: ArrayBuffer): void;
+        /**
+         * Write a raw 32-bit unsigned integer.
+         * For use inside of a custom `serializer._writeHostObject()`.
+         */
+        writeUint32(value: number): void;
+        /**
+         * Write a raw 64-bit unsigned integer, split into high and low 32-bit parts.
+         * For use inside of a custom `serializer._writeHostObject()`.
+         */
+        writeUint64(hi: number, lo: number): void;
+        /**
+         * Write a JS `number` value.
+         * For use inside of a custom `serializer._writeHostObject()`.
+         */
+        writeDouble(value: number): void;
+        /**
+         * Write raw bytes into the serializer’s internal buffer. The deserializer
+         * will require a way to compute the length of the buffer.
+         * For use inside of a custom `serializer._writeHostObject()`.
+         */
+        writeRawBytes(buffer: NodeJS.TypedArray): void;
+    }
+    /**
+     * A subclass of `Serializer` that serializes `TypedArray`(in particular `Buffer`) and `DataView` objects as host objects, and only
+     * stores the part of their underlying `ArrayBuffer`s that they are referring to.
+     * @since v8.0.0
+     */
+    class DefaultSerializer extends Serializer {}
+    /**
+     * @since v8.0.0
+     */
+    class Deserializer {
+        constructor(data: NodeJS.TypedArray);
+        /**
+         * Reads and validates a header (including the format version).
+         * May, for example, reject an invalid or unsupported wire format. In that case,
+         * an `Error` is thrown.
+         */
+        readHeader(): boolean;
+        /**
+         * Deserializes a JavaScript value from the buffer and returns it.
+         */
+        readValue(): any;
+        /**
+         * Marks an `ArrayBuffer` as having its contents transferred out of band.
+         * Pass the corresponding `ArrayBuffer` in the serializing context to `serializer.transferArrayBuffer()` (or return the `id` from `serializer._getSharedArrayBufferId()` in the case of
+         * `SharedArrayBuffer`s).
+         * @param id A 32-bit unsigned integer.
+         * @param arrayBuffer An `ArrayBuffer` instance.
+         */
+        transferArrayBuffer(id: number, arrayBuffer: ArrayBuffer): void;
+        /**
+         * Reads the underlying wire format version. Likely mostly to be useful to
+         * legacy code reading old wire format versions. May not be called before`.readHeader()`.
+         */
+        getWireFormatVersion(): number;
+        /**
+         * Read a raw 32-bit unsigned integer and return it.
+         * For use inside of a custom `deserializer._readHostObject()`.
+         */
+        readUint32(): number;
+        /**
+         * Read a raw 64-bit unsigned integer and return it as an array `[hi, lo]`with two 32-bit unsigned integer entries.
+         * For use inside of a custom `deserializer._readHostObject()`.
+         */
+        readUint64(): [number, number];
+        /**
+         * Read a JS `number` value.
+         * For use inside of a custom `deserializer._readHostObject()`.
+         */
+        readDouble(): number;
+        /**
+         * Read raw bytes from the deserializer’s internal buffer. The `length` parameter
+         * must correspond to the length of the buffer that was passed to `serializer.writeRawBytes()`.
+         * For use inside of a custom `deserializer._readHostObject()`.
+         */
+        readRawBytes(length: number): Buffer;
+    }
+    /**
+     * A subclass of `Deserializer` corresponding to the format written by `DefaultSerializer`.
+     * @since v8.0.0
+     */
+    class DefaultDeserializer extends Deserializer {}
+    /**
+     * Uses a `DefaultSerializer` to serialize `value` into a buffer.
+     *
+     * `ERR_BUFFER_TOO_LARGE` will be thrown when trying to
+     * serialize a huge object which requires buffer
+     * larger than `buffer.constants.MAX_LENGTH`.
+     * @since v8.0.0
+     */
+    function serialize(value: any): Buffer;
+    /**
+     * Uses a `DefaultDeserializer` with default options to read a JS value
+     * from a buffer.
+     * @since v8.0.0
+     * @param buffer A buffer returned by {@link serialize}.
+     */
+    function deserialize(buffer: NodeJS.TypedArray): any;
+    /**
+     * The `v8.takeCoverage()` method allows the user to write the coverage started by `NODE_V8_COVERAGE` to disk on demand. This method can be invoked multiple
+     * times during the lifetime of the process. Each time the execution counter will
+     * be reset and a new coverage report will be written to the directory specified
+     * by `NODE_V8_COVERAGE`.
+     *
+     * When the process is about to exit, one last coverage will still be written to
+     * disk unless {@link stopCoverage} is invoked before the process exits.
+     * @since v15.1.0, v14.18.0, v12.22.0
+     */
+    function takeCoverage(): void;
+    /**
+     * The `v8.stopCoverage()` method allows the user to stop the coverage collection
+     * started by `NODE_V8_COVERAGE`, so that V8 can release the execution count
+     * records and optimize code. This can be used in conjunction with {@link takeCoverage} if the user wants to collect the coverage on demand.
+     * @since v15.1.0, v14.18.0, v12.22.0
+     */
+    function stopCoverage(): void;
+}
+declare module 'node:v8' {
+    export * from 'v8';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/vm.d.ts b/igv_component/node_modules/@types/node/ts4.8/vm.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..c96513a50555debf6fd50aa0e414a18d1d342efb
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/vm.d.ts
@@ -0,0 +1,509 @@
+/**
+ * The `vm` module enables compiling and running code within V8 Virtual
+ * Machine contexts.
+ *
+ * **The `vm` module is not a security**
+ * **mechanism. Do not use it to run untrusted code.**
+ *
+ * JavaScript code can be compiled and run immediately or
+ * compiled, saved, and run later.
+ *
+ * A common use case is to run the code in a different V8 Context. This means
+ * invoked code has a different global object than the invoking code.
+ *
+ * One can provide the context by `contextifying` an
+ * object. The invoked code treats any property in the context like a
+ * global variable. Any changes to global variables caused by the invoked
+ * code are reflected in the context object.
+ *
+ * ```js
+ * const vm = require('vm');
+ *
+ * const x = 1;
+ *
+ * const context = { x: 2 };
+ * vm.createContext(context); // Contextify the object.
+ *
+ * const code = 'x += 40; var y = 17;';
+ * // `x` and `y` are global variables in the context.
+ * // Initially, x has the value 2 because that is the value of context.x.
+ * vm.runInContext(code, context);
+ *
+ * console.log(context.x); // 42
+ * console.log(context.y); // 17
+ *
+ * console.log(x); // 1; y is not defined.
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/vm.js)
+ */
+declare module 'vm' {
+    interface Context extends NodeJS.Dict<any> {}
+    interface BaseOptions {
+        /**
+         * Specifies the filename used in stack traces produced by this script.
+         * Default: `''`.
+         */
+        filename?: string | undefined;
+        /**
+         * Specifies the line number offset that is displayed in stack traces produced by this script.
+         * Default: `0`.
+         */
+        lineOffset?: number | undefined;
+        /**
+         * Specifies the column number offset that is displayed in stack traces produced by this script.
+         * @default 0
+         */
+        columnOffset?: number | undefined;
+    }
+    interface ScriptOptions extends BaseOptions {
+        displayErrors?: boolean | undefined;
+        timeout?: number | undefined;
+        cachedData?: Buffer | undefined;
+        /** @deprecated in favor of `script.createCachedData()` */
+        produceCachedData?: boolean | undefined;
+    }
+    interface RunningScriptOptions extends BaseOptions {
+        /**
+         * When `true`, if an `Error` occurs while compiling the `code`, the line of code causing the error is attached to the stack trace.
+         * Default: `true`.
+         */
+        displayErrors?: boolean | undefined;
+        /**
+         * Specifies the number of milliseconds to execute code before terminating execution.
+         * If execution is terminated, an `Error` will be thrown. This value must be a strictly positive integer.
+         */
+        timeout?: number | undefined;
+        /**
+         * If `true`, the execution will be terminated when `SIGINT` (Ctrl+C) is received.
+         * Existing handlers for the event that have been attached via `process.on('SIGINT')` will be disabled during script execution, but will continue to work after that.
+         * If execution is terminated, an `Error` will be thrown.
+         * Default: `false`.
+         */
+        breakOnSigint?: boolean | undefined;
+        /**
+         * If set to `afterEvaluate`, microtasks will be run immediately after the script has run.
+         */
+        microtaskMode?: 'afterEvaluate' | undefined;
+    }
+    interface CompileFunctionOptions extends BaseOptions {
+        /**
+         * Provides an optional data with V8's code cache data for the supplied source.
+         */
+        cachedData?: Buffer | undefined;
+        /**
+         * Specifies whether to produce new cache data.
+         * Default: `false`,
+         */
+        produceCachedData?: boolean | undefined;
+        /**
+         * The sandbox/context in which the said function should be compiled in.
+         */
+        parsingContext?: Context | undefined;
+        /**
+         * An array containing a collection of context extensions (objects wrapping the current scope) to be applied while compiling
+         */
+        contextExtensions?: Object[] | undefined;
+    }
+    interface CreateContextOptions {
+        /**
+         * Human-readable name of the newly created context.
+         * @default 'VM Context i' Where i is an ascending numerical index of the created context.
+         */
+        name?: string | undefined;
+        /**
+         * Corresponds to the newly created context for display purposes.
+         * The origin should be formatted like a `URL`, but with only the scheme, host, and port (if necessary),
+         * like the value of the `url.origin` property of a URL object.
+         * Most notably, this string should omit the trailing slash, as that denotes a path.
+         * @default ''
+         */
+        origin?: string | undefined;
+        codeGeneration?:
+            | {
+                  /**
+                   * If set to false any calls to eval or function constructors (Function, GeneratorFunction, etc)
+                   * will throw an EvalError.
+                   * @default true
+                   */
+                  strings?: boolean | undefined;
+                  /**
+                   * If set to false any attempt to compile a WebAssembly module will throw a WebAssembly.CompileError.
+                   * @default true
+                   */
+                  wasm?: boolean | undefined;
+              }
+            | undefined;
+        /**
+         * If set to `afterEvaluate`, microtasks will be run immediately after the script has run.
+         */
+        microtaskMode?: 'afterEvaluate' | undefined;
+    }
+    type MeasureMemoryMode = 'summary' | 'detailed';
+    interface MeasureMemoryOptions {
+        /**
+         * @default 'summary'
+         */
+        mode?: MeasureMemoryMode | undefined;
+        context?: Context | undefined;
+    }
+    interface MemoryMeasurement {
+        total: {
+            jsMemoryEstimate: number;
+            jsMemoryRange: [number, number];
+        };
+    }
+    /**
+     * Instances of the `vm.Script` class contain precompiled scripts that can be
+     * executed in specific contexts.
+     * @since v0.3.1
+     */
+    class Script {
+        constructor(code: string, options?: ScriptOptions);
+        /**
+         * Runs the compiled code contained by the `vm.Script` object within the given`contextifiedObject` and returns the result. Running code does not have access
+         * to local scope.
+         *
+         * The following example compiles code that increments a global variable, sets
+         * the value of another global variable, then execute the code multiple times.
+         * The globals are contained in the `context` object.
+         *
+         * ```js
+         * const vm = require('vm');
+         *
+         * const context = {
+         *   animal: 'cat',
+         *   count: 2
+         * };
+         *
+         * const script = new vm.Script('count += 1; name = "kitty";');
+         *
+         * vm.createContext(context);
+         * for (let i = 0; i < 10; ++i) {
+         *   script.runInContext(context);
+         * }
+         *
+         * console.log(context);
+         * // Prints: { animal: 'cat', count: 12, name: 'kitty' }
+         * ```
+         *
+         * Using the `timeout` or `breakOnSigint` options will result in new event loops
+         * and corresponding threads being started, which have a non-zero performance
+         * overhead.
+         * @since v0.3.1
+         * @param contextifiedObject A `contextified` object as returned by the `vm.createContext()` method.
+         * @return the result of the very last statement executed in the script.
+         */
+        runInContext(contextifiedObject: Context, options?: RunningScriptOptions): any;
+        /**
+         * First contextifies the given `contextObject`, runs the compiled code contained
+         * by the `vm.Script` object within the created context, and returns the result.
+         * Running code does not have access to local scope.
+         *
+         * The following example compiles code that sets a global variable, then executes
+         * the code multiple times in different contexts. The globals are set on and
+         * contained within each individual `context`.
+         *
+         * ```js
+         * const vm = require('vm');
+         *
+         * const script = new vm.Script('globalVar = "set"');
+         *
+         * const contexts = [{}, {}, {}];
+         * contexts.forEach((context) => {
+         *   script.runInNewContext(context);
+         * });
+         *
+         * console.log(contexts);
+         * // Prints: [{ globalVar: 'set' }, { globalVar: 'set' }, { globalVar: 'set' }]
+         * ```
+         * @since v0.3.1
+         * @param contextObject An object that will be `contextified`. If `undefined`, a new object will be created.
+         * @return the result of the very last statement executed in the script.
+         */
+        runInNewContext(contextObject?: Context, options?: RunningScriptOptions): any;
+        /**
+         * Runs the compiled code contained by the `vm.Script` within the context of the
+         * current `global` object. Running code does not have access to local scope, but _does_ have access to the current `global` object.
+         *
+         * The following example compiles code that increments a `global` variable then
+         * executes that code multiple times:
+         *
+         * ```js
+         * const vm = require('vm');
+         *
+         * global.globalVar = 0;
+         *
+         * const script = new vm.Script('globalVar += 1', { filename: 'myfile.vm' });
+         *
+         * for (let i = 0; i < 1000; ++i) {
+         *   script.runInThisContext();
+         * }
+         *
+         * console.log(globalVar);
+         *
+         * // 1000
+         * ```
+         * @since v0.3.1
+         * @return the result of the very last statement executed in the script.
+         */
+        runInThisContext(options?: RunningScriptOptions): any;
+        /**
+         * Creates a code cache that can be used with the `Script` constructor's`cachedData` option. Returns a `Buffer`. This method may be called at any
+         * time and any number of times.
+         *
+         * ```js
+         * const script = new vm.Script(`
+         * function add(a, b) {
+         *   return a + b;
+         * }
+         *
+         * const x = add(1, 2);
+         * `);
+         *
+         * const cacheWithoutX = script.createCachedData();
+         *
+         * script.runInThisContext();
+         *
+         * const cacheWithX = script.createCachedData();
+         * ```
+         * @since v10.6.0
+         */
+        createCachedData(): Buffer;
+        /** @deprecated in favor of `script.createCachedData()` */
+        cachedDataProduced?: boolean | undefined;
+        cachedDataRejected?: boolean | undefined;
+        cachedData?: Buffer | undefined;
+    }
+    /**
+     * If given a `contextObject`, the `vm.createContext()` method will `prepare
+     * that object` so that it can be used in calls to {@link runInContext} or `script.runInContext()`. Inside such scripts,
+     * the `contextObject` will be the global object, retaining all of its existing
+     * properties but also having the built-in objects and functions any standard [global object](https://es5.github.io/#x15.1) has. Outside of scripts run by the vm module, global variables
+     * will remain unchanged.
+     *
+     * ```js
+     * const vm = require('vm');
+     *
+     * global.globalVar = 3;
+     *
+     * const context = { globalVar: 1 };
+     * vm.createContext(context);
+     *
+     * vm.runInContext('globalVar *= 2;', context);
+     *
+     * console.log(context);
+     * // Prints: { globalVar: 2 }
+     *
+     * console.log(global.globalVar);
+     * // Prints: 3
+     * ```
+     *
+     * If `contextObject` is omitted (or passed explicitly as `undefined`), a new,
+     * empty `contextified` object will be returned.
+     *
+     * The `vm.createContext()` method is primarily useful for creating a single
+     * context that can be used to run multiple scripts. For instance, if emulating a
+     * web browser, the method can be used to create a single context representing a
+     * window's global object, then run all `<script>` tags together within that
+     * context.
+     *
+     * The provided `name` and `origin` of the context are made visible through the
+     * Inspector API.
+     * @since v0.3.1
+     * @return contextified object.
+     */
+    function createContext(sandbox?: Context, options?: CreateContextOptions): Context;
+    /**
+     * Returns `true` if the given `object` object has been `contextified` using {@link createContext}.
+     * @since v0.11.7
+     */
+    function isContext(sandbox: Context): boolean;
+    /**
+     * The `vm.runInContext()` method compiles `code`, runs it within the context of
+     * the `contextifiedObject`, then returns the result. Running code does not have
+     * access to the local scope. The `contextifiedObject` object _must_ have been
+     * previously `contextified` using the {@link createContext} method.
+     *
+     * If `options` is a string, then it specifies the filename.
+     *
+     * The following example compiles and executes different scripts using a single `contextified` object:
+     *
+     * ```js
+     * const vm = require('vm');
+     *
+     * const contextObject = { globalVar: 1 };
+     * vm.createContext(contextObject);
+     *
+     * for (let i = 0; i < 10; ++i) {
+     *   vm.runInContext('globalVar *= 2;', contextObject);
+     * }
+     * console.log(contextObject);
+     * // Prints: { globalVar: 1024 }
+     * ```
+     * @since v0.3.1
+     * @param code The JavaScript code to compile and run.
+     * @param contextifiedObject The `contextified` object that will be used as the `global` when the `code` is compiled and run.
+     * @return the result of the very last statement executed in the script.
+     */
+    function runInContext(code: string, contextifiedObject: Context, options?: RunningScriptOptions | string): any;
+    /**
+     * The `vm.runInNewContext()` first contextifies the given `contextObject` (or
+     * creates a new `contextObject` if passed as `undefined`), compiles the `code`,
+     * runs it within the created context, then returns the result. Running code
+     * does not have access to the local scope.
+     *
+     * If `options` is a string, then it specifies the filename.
+     *
+     * The following example compiles and executes code that increments a global
+     * variable and sets a new one. These globals are contained in the `contextObject`.
+     *
+     * ```js
+     * const vm = require('vm');
+     *
+     * const contextObject = {
+     *   animal: 'cat',
+     *   count: 2
+     * };
+     *
+     * vm.runInNewContext('count += 1; name = "kitty"', contextObject);
+     * console.log(contextObject);
+     * // Prints: { animal: 'cat', count: 3, name: 'kitty' }
+     * ```
+     * @since v0.3.1
+     * @param code The JavaScript code to compile and run.
+     * @param contextObject An object that will be `contextified`. If `undefined`, a new object will be created.
+     * @return the result of the very last statement executed in the script.
+     */
+    function runInNewContext(code: string, contextObject?: Context, options?: RunningScriptOptions | string): any;
+    /**
+     * `vm.runInThisContext()` compiles `code`, runs it within the context of the
+     * current `global` and returns the result. Running code does not have access to
+     * local scope, but does have access to the current `global` object.
+     *
+     * If `options` is a string, then it specifies the filename.
+     *
+     * The following example illustrates using both `vm.runInThisContext()` and
+     * the JavaScript [`eval()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval) function to run the same code:
+     *
+     * ```js
+     * const vm = require('vm');
+     * let localVar = 'initial value';
+     *
+     * const vmResult = vm.runInThisContext('localVar = "vm";');
+     * console.log(`vmResult: '${vmResult}', localVar: '${localVar}'`);
+     * // Prints: vmResult: 'vm', localVar: 'initial value'
+     *
+     * const evalResult = eval('localVar = "eval";');
+     * console.log(`evalResult: '${evalResult}', localVar: '${localVar}'`);
+     * // Prints: evalResult: 'eval', localVar: 'eval'
+     * ```
+     *
+     * Because `vm.runInThisContext()` does not have access to the local scope,`localVar` is unchanged. In contrast,
+     * [`eval()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval) _does_ have access to the
+     * local scope, so the value `localVar` is changed. In this way`vm.runInThisContext()` is much like an [indirect `eval()` call](https://es5.github.io/#x10.4.2), e.g.`(0,eval)('code')`.
+     *
+     * ## Example: Running an HTTP server within a VM
+     *
+     * When using either `script.runInThisContext()` or {@link runInThisContext}, the code is executed within the current V8 global
+     * context. The code passed to this VM context will have its own isolated scope.
+     *
+     * In order to run a simple web server using the `http` module the code passed to
+     * the context must either call `require('http')` on its own, or have a reference
+     * to the `http` module passed to it. For instance:
+     *
+     * ```js
+     * 'use strict';
+     * const vm = require('vm');
+     *
+     * const code = `
+     * ((require) => {
+     *   const http = require('http');
+     *
+     *   http.createServer((request, response) => {
+     *     response.writeHead(200, { 'Content-Type': 'text/plain' });
+     *     response.end('Hello World\\n');
+     *   }).listen(8124);
+     *
+     *   console.log('Server running at http://127.0.0.1:8124/');
+     * })`;
+     *
+     * vm.runInThisContext(code)(require);
+     * ```
+     *
+     * The `require()` in the above case shares the state with the context it is
+     * passed from. This may introduce risks when untrusted code is executed, e.g.
+     * altering objects in the context in unwanted ways.
+     * @since v0.3.1
+     * @param code The JavaScript code to compile and run.
+     * @return the result of the very last statement executed in the script.
+     */
+    function runInThisContext(code: string, options?: RunningScriptOptions | string): any;
+    /**
+     * Compiles the given code into the provided context (if no context is
+     * supplied, the current context is used), and returns it wrapped inside a
+     * function with the given `params`.
+     * @since v10.10.0
+     * @param code The body of the function to compile.
+     * @param params An array of strings containing all parameters for the function.
+     */
+    function compileFunction(code: string, params?: ReadonlyArray<string>, options?: CompileFunctionOptions): Function;
+    /**
+     * Measure the memory known to V8 and used by all contexts known to the
+     * current V8 isolate, or the main context.
+     *
+     * The format of the object that the returned Promise may resolve with is
+     * specific to the V8 engine and may change from one version of V8 to the next.
+     *
+     * The returned result is different from the statistics returned by`v8.getHeapSpaceStatistics()` in that `vm.measureMemory()` measure the
+     * memory reachable by each V8 specific contexts in the current instance of
+     * the V8 engine, while the result of `v8.getHeapSpaceStatistics()` measure
+     * the memory occupied by each heap space in the current V8 instance.
+     *
+     * ```js
+     * const vm = require('vm');
+     * // Measure the memory used by the main context.
+     * vm.measureMemory({ mode: 'summary' })
+     *   // This is the same as vm.measureMemory()
+     *   .then((result) => {
+     *     // The current format is:
+     *     // {
+     *     //   total: {
+     *     //      jsMemoryEstimate: 2418479, jsMemoryRange: [ 2418479, 2745799 ]
+     *     //    }
+     *     // }
+     *     console.log(result);
+     *   });
+     *
+     * const context = vm.createContext({ a: 1 });
+     * vm.measureMemory({ mode: 'detailed', execution: 'eager' })
+     *   .then((result) => {
+     *     // Reference the context here so that it won't be GC'ed
+     *     // until the measurement is complete.
+     *     console.log(context.a);
+     *     // {
+     *     //   total: {
+     *     //     jsMemoryEstimate: 2574732,
+     *     //     jsMemoryRange: [ 2574732, 2904372 ]
+     *     //   },
+     *     //   current: {
+     *     //     jsMemoryEstimate: 2438996,
+     *     //     jsMemoryRange: [ 2438996, 2768636 ]
+     *     //   },
+     *     //   other: [
+     *     //     {
+     *     //       jsMemoryEstimate: 135736,
+     *     //       jsMemoryRange: [ 135736, 465376 ]
+     *     //     }
+     *     //   ]
+     *     // }
+     *     console.log(result);
+     *   });
+     * ```
+     * @since v13.10.0
+     * @experimental
+     */
+    function measureMemory(options?: MeasureMemoryOptions): Promise<MemoryMeasurement>;
+}
+declare module 'node:vm' {
+    export * from 'vm';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/wasi.d.ts b/igv_component/node_modules/@types/node/ts4.8/wasi.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d20b66bf443eeae7eb10f04576ab1e1e1e2da418
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/wasi.d.ts
@@ -0,0 +1,158 @@
+/**
+ * The WASI API provides an implementation of the [WebAssembly System Interface](https://wasi.dev/) specification. WASI gives sandboxed WebAssembly applications access to the
+ * underlying operating system via a collection of POSIX-like functions.
+ *
+ * ```js
+ * import { readFile } from 'fs/promises';
+ * import { WASI } from 'wasi';
+ * import { argv, env } from 'process';
+ *
+ * const wasi = new WASI({
+ *   args: argv,
+ *   env,
+ *   preopens: {
+ *     '/sandbox': '/some/real/path/that/wasm/can/access'
+ *   }
+ * });
+ *
+ * // Some WASI binaries require:
+ * //   const importObject = { wasi_unstable: wasi.wasiImport };
+ * const importObject = { wasi_snapshot_preview1: wasi.wasiImport };
+ *
+ * const wasm = await WebAssembly.compile(
+ *   await readFile(new URL('./demo.wasm', import.meta.url))
+ * );
+ * const instance = await WebAssembly.instantiate(wasm, importObject);
+ *
+ * wasi.start(instance);
+ * ```
+ *
+ * To run the above example, create a new WebAssembly text format file named`demo.wat`:
+ *
+ * ```text
+ * (module
+ *     ;; Import the required fd_write WASI function which will write the given io vectors to stdout
+ *     ;; The function signature for fd_write is:
+ *     ;; (File Descriptor, *iovs, iovs_len, nwritten) -> Returns number of bytes written
+ *     (import "wasi_snapshot_preview1" "fd_write" (func $fd_write (param i32 i32 i32 i32) (result i32)))
+ *
+ *     (memory 1)
+ *     (export "memory" (memory 0))
+ *
+ *     ;; Write 'hello world\n' to memory at an offset of 8 bytes
+ *     ;; Note the trailing newline which is required for the text to appear
+ *     (data (i32.const 8) "hello world\n")
+ *
+ *     (func $main (export "_start")
+ *         ;; Creating a new io vector within linear memory
+ *         (i32.store (i32.const 0) (i32.const 8))  ;; iov.iov_base - This is a pointer to the start of the 'hello world\n' string
+ *         (i32.store (i32.const 4) (i32.const 12))  ;; iov.iov_len - The length of the 'hello world\n' string
+ *
+ *         (call $fd_write
+ *             (i32.const 1) ;; file_descriptor - 1 for stdout
+ *             (i32.const 0) ;; *iovs - The pointer to the iov array, which is stored at memory location 0
+ *             (i32.const 1) ;; iovs_len - We're printing 1 string stored in an iov - so one.
+ *             (i32.const 20) ;; nwritten - A place in memory to store the number of bytes written
+ *         )
+ *         drop ;; Discard the number of bytes written from the top of the stack
+ *     )
+ * )
+ * ```
+ *
+ * Use [wabt](https://github.com/WebAssembly/wabt) to compile `.wat` to `.wasm`
+ *
+ * ```console
+ * $ wat2wasm demo.wat
+ * ```
+ *
+ * The `--experimental-wasi-unstable-preview1` CLI argument is needed for this
+ * example to run.
+ * @experimental
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/wasi.js)
+ */
+declare module 'wasi' {
+    interface WASIOptions {
+        /**
+         * An array of strings that the WebAssembly application will
+         * see as command line arguments. The first argument is the virtual path to the
+         * WASI command itself.
+         */
+        args?: string[] | undefined;
+        /**
+         * An object similar to `process.env` that the WebAssembly
+         * application will see as its environment.
+         */
+        env?: object | undefined;
+        /**
+         * This object represents the WebAssembly application's
+         * sandbox directory structure. The string keys of `preopens` are treated as
+         * directories within the sandbox. The corresponding values in `preopens` are
+         * the real paths to those directories on the host machine.
+         */
+        preopens?: NodeJS.Dict<string> | undefined;
+        /**
+         * By default, WASI applications terminate the Node.js
+         * process via the `__wasi_proc_exit()` function. Setting this option to `true`
+         * causes `wasi.start()` to return the exit code rather than terminate the
+         * process.
+         * @default false
+         */
+        returnOnExit?: boolean | undefined;
+        /**
+         * The file descriptor used as standard input in the WebAssembly application.
+         * @default 0
+         */
+        stdin?: number | undefined;
+        /**
+         * The file descriptor used as standard output in the WebAssembly application.
+         * @default 1
+         */
+        stdout?: number | undefined;
+        /**
+         * The file descriptor used as standard error in the WebAssembly application.
+         * @default 2
+         */
+        stderr?: number | undefined;
+    }
+    /**
+     * The `WASI` class provides the WASI system call API and additional convenience
+     * methods for working with WASI-based applications. Each `WASI` instance
+     * represents a distinct sandbox environment. For security purposes, each `WASI`instance must have its command-line arguments, environment variables, and
+     * sandbox directory structure configured explicitly.
+     * @since v13.3.0, v12.16.0
+     */
+    class WASI {
+        constructor(options?: WASIOptions);
+        /**
+         * Attempt to begin execution of `instance` as a WASI command by invoking its`_start()` export. If `instance` does not contain a `_start()` export, or if`instance` contains an `_initialize()`
+         * export, then an exception is thrown.
+         *
+         * `start()` requires that `instance` exports a [`WebAssembly.Memory`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Memory) named`memory`. If
+         * `instance` does not have a `memory` export an exception is thrown.
+         *
+         * If `start()` is called more than once, an exception is thrown.
+         * @since v13.3.0, v12.16.0
+         */
+        start(instance: object): void; // TODO: avoid DOM dependency until WASM moved to own lib.
+        /**
+         * Attempt to initialize `instance` as a WASI reactor by invoking its`_initialize()` export, if it is present. If `instance` contains a `_start()`export, then an exception is thrown.
+         *
+         * `initialize()` requires that `instance` exports a [`WebAssembly.Memory`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Memory) named`memory`.
+         * If `instance` does not have a `memory` export an exception is thrown.
+         *
+         * If `initialize()` is called more than once, an exception is thrown.
+         * @since v14.6.0, v12.19.0
+         */
+        initialize(instance: object): void; // TODO: avoid DOM dependency until WASM moved to own lib.
+        /**
+         * `wasiImport` is an object that implements the WASI system call API. This object
+         * should be passed as the `wasi_snapshot_preview1` import during the instantiation
+         * of a [`WebAssembly.Instance`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Instance).
+         * @since v13.3.0, v12.16.0
+         */
+        readonly wasiImport: NodeJS.Dict<any>; // TODO: Narrow to DOM types
+    }
+}
+declare module 'node:wasi' {
+    export * from 'wasi';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/worker_threads.d.ts b/igv_component/node_modules/@types/node/ts4.8/worker_threads.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..81b71c28313f6afb4b918dd6a14a9c8ae70784de
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/worker_threads.d.ts
@@ -0,0 +1,646 @@
+/**
+ * The `worker_threads` module enables the use of threads that execute JavaScript
+ * in parallel. To access it:
+ *
+ * ```js
+ * const worker = require('worker_threads');
+ * ```
+ *
+ * Workers (threads) are useful for performing CPU-intensive JavaScript operations.
+ * They do not help much with I/O-intensive work. The Node.js built-in
+ * asynchronous I/O operations are more efficient than Workers can be.
+ *
+ * Unlike `child_process` or `cluster`, `worker_threads` can share memory. They do
+ * so by transferring `ArrayBuffer` instances or sharing `SharedArrayBuffer`instances.
+ *
+ * ```js
+ * const {
+ *   Worker, isMainThread, parentPort, workerData
+ * } = require('worker_threads');
+ *
+ * if (isMainThread) {
+ *   module.exports = function parseJSAsync(script) {
+ *     return new Promise((resolve, reject) => {
+ *       const worker = new Worker(__filename, {
+ *         workerData: script
+ *       });
+ *       worker.on('message', resolve);
+ *       worker.on('error', reject);
+ *       worker.on('exit', (code) => {
+ *         if (code !== 0)
+ *           reject(new Error(`Worker stopped with exit code ${code}`));
+ *       });
+ *     });
+ *   };
+ * } else {
+ *   const { parse } = require('some-js-parsing-library');
+ *   const script = workerData;
+ *   parentPort.postMessage(parse(script));
+ * }
+ * ```
+ *
+ * The above example spawns a Worker thread for each `parseJSAsync()` call. In
+ * practice, use a pool of Workers for these kinds of tasks. Otherwise, the
+ * overhead of creating Workers would likely exceed their benefit.
+ *
+ * When implementing a worker pool, use the `AsyncResource` API to inform
+ * diagnostic tools (e.g. to provide asynchronous stack traces) about the
+ * correlation between tasks and their outcomes. See `"Using AsyncResource for a Worker thread pool"` in the `async_hooks` documentation for an example implementation.
+ *
+ * Worker threads inherit non-process-specific options by default. Refer to `Worker constructor options` to know how to customize worker thread options,
+ * specifically `argv` and `execArgv` options.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/worker_threads.js)
+ */
+declare module 'worker_threads' {
+    import { Blob } from 'node:buffer';
+    import { Context } from 'node:vm';
+    import { EventEmitter } from 'node:events';
+    import { EventLoopUtilityFunction } from 'node:perf_hooks';
+    import { FileHandle } from 'node:fs/promises';
+    import { Readable, Writable } from 'node:stream';
+    import { URL } from 'node:url';
+    import { X509Certificate } from 'node:crypto';
+    const isMainThread: boolean;
+    const parentPort: null | MessagePort;
+    const resourceLimits: ResourceLimits;
+    const SHARE_ENV: unique symbol;
+    const threadId: number;
+    const workerData: any;
+    /**
+     * Instances of the `worker.MessageChannel` class represent an asynchronous,
+     * two-way communications channel.
+     * The `MessageChannel` has no methods of its own. `new MessageChannel()`yields an object with `port1` and `port2` properties, which refer to linked `MessagePort` instances.
+     *
+     * ```js
+     * const { MessageChannel } = require('worker_threads');
+     *
+     * const { port1, port2 } = new MessageChannel();
+     * port1.on('message', (message) => console.log('received', message));
+     * port2.postMessage({ foo: 'bar' });
+     * // Prints: received { foo: 'bar' } from the `port1.on('message')` listener
+     * ```
+     * @since v10.5.0
+     */
+    class MessageChannel {
+        readonly port1: MessagePort;
+        readonly port2: MessagePort;
+    }
+    interface WorkerPerformance {
+        eventLoopUtilization: EventLoopUtilityFunction;
+    }
+    type TransferListItem = ArrayBuffer | MessagePort | FileHandle | X509Certificate | Blob;
+    /**
+     * Instances of the `worker.MessagePort` class represent one end of an
+     * asynchronous, two-way communications channel. It can be used to transfer
+     * structured data, memory regions and other `MessagePort`s between different `Worker` s.
+     *
+     * This implementation matches [browser `MessagePort`](https://developer.mozilla.org/en-US/docs/Web/API/MessagePort) s.
+     * @since v10.5.0
+     */
+    class MessagePort extends EventEmitter {
+        /**
+         * Disables further sending of messages on either side of the connection.
+         * This method can be called when no further communication will happen over this`MessagePort`.
+         *
+         * The `'close' event` is emitted on both `MessagePort` instances that
+         * are part of the channel.
+         * @since v10.5.0
+         */
+        close(): void;
+        /**
+         * Sends a JavaScript value to the receiving side of this channel.`value` is transferred in a way which is compatible with
+         * the [HTML structured clone algorithm](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Structured_clone_algorithm).
+         *
+         * In particular, the significant differences to `JSON` are:
+         *
+         * * `value` may contain circular references.
+         * * `value` may contain instances of builtin JS types such as `RegExp`s,`BigInt`s, `Map`s, `Set`s, etc.
+         * * `value` may contain typed arrays, both using `ArrayBuffer`s
+         * and `SharedArrayBuffer`s.
+         * * `value` may contain [`WebAssembly.Module`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Module) instances.
+         * * `value` may not contain native (C++-backed) objects other than:
+         *
+         * ```js
+         * const { MessageChannel } = require('worker_threads');
+         * const { port1, port2 } = new MessageChannel();
+         *
+         * port1.on('message', (message) => console.log(message));
+         *
+         * const circularData = {};
+         * circularData.foo = circularData;
+         * // Prints: { foo: [Circular] }
+         * port2.postMessage(circularData);
+         * ```
+         *
+         * `transferList` may be a list of [`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer), `MessagePort` and `FileHandle` objects.
+         * After transferring, they are not usable on the sending side of the channel
+         * anymore (even if they are not contained in `value`). Unlike with `child processes`, transferring handles such as network sockets is currently
+         * not supported.
+         *
+         * If `value` contains [`SharedArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer) instances, those are accessible
+         * from either thread. They cannot be listed in `transferList`.
+         *
+         * `value` may still contain `ArrayBuffer` instances that are not in`transferList`; in that case, the underlying memory is copied rather than moved.
+         *
+         * ```js
+         * const { MessageChannel } = require('worker_threads');
+         * const { port1, port2 } = new MessageChannel();
+         *
+         * port1.on('message', (message) => console.log(message));
+         *
+         * const uint8Array = new Uint8Array([ 1, 2, 3, 4 ]);
+         * // This posts a copy of `uint8Array`:
+         * port2.postMessage(uint8Array);
+         * // This does not copy data, but renders `uint8Array` unusable:
+         * port2.postMessage(uint8Array, [ uint8Array.buffer ]);
+         *
+         * // The memory for the `sharedUint8Array` is accessible from both the
+         * // original and the copy received by `.on('message')`:
+         * const sharedUint8Array = new Uint8Array(new SharedArrayBuffer(4));
+         * port2.postMessage(sharedUint8Array);
+         *
+         * // This transfers a freshly created message port to the receiver.
+         * // This can be used, for example, to create communication channels between
+         * // multiple `Worker` threads that are children of the same parent thread.
+         * const otherChannel = new MessageChannel();
+         * port2.postMessage({ port: otherChannel.port1 }, [ otherChannel.port1 ]);
+         * ```
+         *
+         * The message object is cloned immediately, and can be modified after
+         * posting without having side effects.
+         *
+         * For more information on the serialization and deserialization mechanisms
+         * behind this API, see the `serialization API of the v8 module`.
+         * @since v10.5.0
+         */
+        postMessage(value: any, transferList?: ReadonlyArray<TransferListItem>): void;
+        /**
+         * Opposite of `unref()`. Calling `ref()` on a previously `unref()`ed port does _not_ let the program exit if it's the only active handle left (the default
+         * behavior). If the port is `ref()`ed, calling `ref()` again has no effect.
+         *
+         * If listeners are attached or removed using `.on('message')`, the port
+         * is `ref()`ed and `unref()`ed automatically depending on whether
+         * listeners for the event exist.
+         * @since v10.5.0
+         */
+        ref(): void;
+        /**
+         * Calling `unref()` on a port allows the thread to exit if this is the only
+         * active handle in the event system. If the port is already `unref()`ed calling`unref()` again has no effect.
+         *
+         * If listeners are attached or removed using `.on('message')`, the port is`ref()`ed and `unref()`ed automatically depending on whether
+         * listeners for the event exist.
+         * @since v10.5.0
+         */
+        unref(): void;
+        /**
+         * Starts receiving messages on this `MessagePort`. When using this port
+         * as an event emitter, this is called automatically once `'message'`listeners are attached.
+         *
+         * This method exists for parity with the Web `MessagePort` API. In Node.js,
+         * it is only useful for ignoring messages when no event listener is present.
+         * Node.js also diverges in its handling of `.onmessage`. Setting it
+         * automatically calls `.start()`, but unsetting it lets messages queue up
+         * until a new handler is set or the port is discarded.
+         * @since v10.5.0
+         */
+        start(): void;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'message', listener: (value: any) => void): this;
+        addListener(event: 'messageerror', listener: (error: Error) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'close'): boolean;
+        emit(event: 'message', value: any): boolean;
+        emit(event: 'messageerror', error: Error): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'message', listener: (value: any) => void): this;
+        on(event: 'messageerror', listener: (error: Error) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'message', listener: (value: any) => void): this;
+        once(event: 'messageerror', listener: (error: Error) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'message', listener: (value: any) => void): this;
+        prependListener(event: 'messageerror', listener: (error: Error) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'message', listener: (value: any) => void): this;
+        prependOnceListener(event: 'messageerror', listener: (error: Error) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        removeListener(event: 'close', listener: () => void): this;
+        removeListener(event: 'message', listener: (value: any) => void): this;
+        removeListener(event: 'messageerror', listener: (error: Error) => void): this;
+        removeListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        off(event: 'close', listener: () => void): this;
+        off(event: 'message', listener: (value: any) => void): this;
+        off(event: 'messageerror', listener: (error: Error) => void): this;
+        off(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    interface WorkerOptions {
+        /**
+         * List of arguments which would be stringified and appended to
+         * `process.argv` in the worker. This is mostly similar to the `workerData`
+         * but the values will be available on the global `process.argv` as if they
+         * were passed as CLI options to the script.
+         */
+        argv?: any[] | undefined;
+        env?: NodeJS.Dict<string> | typeof SHARE_ENV | undefined;
+        eval?: boolean | undefined;
+        workerData?: any;
+        stdin?: boolean | undefined;
+        stdout?: boolean | undefined;
+        stderr?: boolean | undefined;
+        execArgv?: string[] | undefined;
+        resourceLimits?: ResourceLimits | undefined;
+        /**
+         * Additional data to send in the first worker message.
+         */
+        transferList?: TransferListItem[] | undefined;
+        /**
+         * @default true
+         */
+        trackUnmanagedFds?: boolean | undefined;
+    }
+    interface ResourceLimits {
+        /**
+         * The maximum size of a heap space for recently created objects.
+         */
+        maxYoungGenerationSizeMb?: number | undefined;
+        /**
+         * The maximum size of the main heap in MB.
+         */
+        maxOldGenerationSizeMb?: number | undefined;
+        /**
+         * The size of a pre-allocated memory range used for generated code.
+         */
+        codeRangeSizeMb?: number | undefined;
+        /**
+         * The default maximum stack size for the thread. Small values may lead to unusable Worker instances.
+         * @default 4
+         */
+        stackSizeMb?: number | undefined;
+    }
+    /**
+     * The `Worker` class represents an independent JavaScript execution thread.
+     * Most Node.js APIs are available inside of it.
+     *
+     * Notable differences inside a Worker environment are:
+     *
+     * * The `process.stdin`, `process.stdout` and `process.stderr` may be redirected by the parent thread.
+     * * The `require('worker_threads').isMainThread` property is set to `false`.
+     * * The `require('worker_threads').parentPort` message port is available.
+     * * `process.exit()` does not stop the whole program, just the single thread,
+     * and `process.abort()` is not available.
+     * * `process.chdir()` and `process` methods that set group or user ids
+     * are not available.
+     * * `process.env` is a copy of the parent thread's environment variables,
+     * unless otherwise specified. Changes to one copy are not visible in other
+     * threads, and are not visible to native add-ons (unless `worker.SHARE_ENV` is passed as the `env` option to the `Worker` constructor).
+     * * `process.title` cannot be modified.
+     * * Signals are not delivered through `process.on('...')`.
+     * * Execution may stop at any point as a result of `worker.terminate()` being invoked.
+     * * IPC channels from parent processes are not accessible.
+     * * The `trace_events` module is not supported.
+     * * Native add-ons can only be loaded from multiple threads if they fulfill `certain conditions`.
+     *
+     * Creating `Worker` instances inside of other `Worker`s is possible.
+     *
+     * Like [Web Workers](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API) and the `cluster module`, two-way communication can be
+     * achieved through inter-thread message passing. Internally, a `Worker` has a
+     * built-in pair of `MessagePort` s that are already associated with each other
+     * when the `Worker` is created. While the `MessagePort` object on the parent side
+     * is not directly exposed, its functionalities are exposed through `worker.postMessage()` and the `worker.on('message')` event
+     * on the `Worker` object for the parent thread.
+     *
+     * To create custom messaging channels (which is encouraged over using the default
+     * global channel because it facilitates separation of concerns), users can create
+     * a `MessageChannel` object on either thread and pass one of the`MessagePort`s on that `MessageChannel` to the other thread through a
+     * pre-existing channel, such as the global one.
+     *
+     * See `port.postMessage()` for more information on how messages are passed,
+     * and what kind of JavaScript values can be successfully transported through
+     * the thread barrier.
+     *
+     * ```js
+     * const assert = require('assert');
+     * const {
+     *   Worker, MessageChannel, MessagePort, isMainThread, parentPort
+     * } = require('worker_threads');
+     * if (isMainThread) {
+     *   const worker = new Worker(__filename);
+     *   const subChannel = new MessageChannel();
+     *   worker.postMessage({ hereIsYourPort: subChannel.port1 }, [subChannel.port1]);
+     *   subChannel.port2.on('message', (value) => {
+     *     console.log('received:', value);
+     *   });
+     * } else {
+     *   parentPort.once('message', (value) => {
+     *     assert(value.hereIsYourPort instanceof MessagePort);
+     *     value.hereIsYourPort.postMessage('the worker is sending this');
+     *     value.hereIsYourPort.close();
+     *   });
+     * }
+     * ```
+     * @since v10.5.0
+     */
+    class Worker extends EventEmitter {
+        /**
+         * If `stdin: true` was passed to the `Worker` constructor, this is a
+         * writable stream. The data written to this stream will be made available in
+         * the worker thread as `process.stdin`.
+         * @since v10.5.0
+         */
+        readonly stdin: Writable | null;
+        /**
+         * This is a readable stream which contains data written to `process.stdout` inside the worker thread. If `stdout: true` was not passed to the `Worker` constructor, then data is piped to the
+         * parent thread's `process.stdout` stream.
+         * @since v10.5.0
+         */
+        readonly stdout: Readable;
+        /**
+         * This is a readable stream which contains data written to `process.stderr` inside the worker thread. If `stderr: true` was not passed to the `Worker` constructor, then data is piped to the
+         * parent thread's `process.stderr` stream.
+         * @since v10.5.0
+         */
+        readonly stderr: Readable;
+        /**
+         * An integer identifier for the referenced thread. Inside the worker thread,
+         * it is available as `require('worker_threads').threadId`.
+         * This value is unique for each `Worker` instance inside a single process.
+         * @since v10.5.0
+         */
+        readonly threadId: number;
+        /**
+         * Provides the set of JS engine resource constraints for this Worker thread.
+         * If the `resourceLimits` option was passed to the `Worker` constructor,
+         * this matches its values.
+         *
+         * If the worker has stopped, the return value is an empty object.
+         * @since v13.2.0, v12.16.0
+         */
+        readonly resourceLimits?: ResourceLimits | undefined;
+        /**
+         * An object that can be used to query performance information from a worker
+         * instance. Similar to `perf_hooks.performance`.
+         * @since v15.1.0, v14.17.0, v12.22.0
+         */
+        readonly performance: WorkerPerformance;
+        /**
+         * @param filename  The path to the Worker’s main script or module.
+         *                  Must be either an absolute path or a relative path (i.e. relative to the current working directory) starting with ./ or ../,
+         *                  or a WHATWG URL object using file: protocol. If options.eval is true, this is a string containing JavaScript code rather than a path.
+         */
+        constructor(filename: string | URL, options?: WorkerOptions);
+        /**
+         * Send a message to the worker that is received via `require('worker_threads').parentPort.on('message')`.
+         * See `port.postMessage()` for more details.
+         * @since v10.5.0
+         */
+        postMessage(value: any, transferList?: ReadonlyArray<TransferListItem>): void;
+        /**
+         * Opposite of `unref()`, calling `ref()` on a previously `unref()`ed worker does _not_ let the program exit if it's the only active handle left (the default
+         * behavior). If the worker is `ref()`ed, calling `ref()` again has
+         * no effect.
+         * @since v10.5.0
+         */
+        ref(): void;
+        /**
+         * Calling `unref()` on a worker allows the thread to exit if this is the only
+         * active handle in the event system. If the worker is already `unref()`ed calling`unref()` again has no effect.
+         * @since v10.5.0
+         */
+        unref(): void;
+        /**
+         * Stop all JavaScript execution in the worker thread as soon as possible.
+         * Returns a Promise for the exit code that is fulfilled when the `'exit' event` is emitted.
+         * @since v10.5.0
+         */
+        terminate(): Promise<number>;
+        /**
+         * Returns a readable stream for a V8 snapshot of the current state of the Worker.
+         * See `v8.getHeapSnapshot()` for more details.
+         *
+         * If the Worker thread is no longer running, which may occur before the `'exit' event` is emitted, the returned `Promise` is rejected
+         * immediately with an `ERR_WORKER_NOT_RUNNING` error.
+         * @since v13.9.0, v12.17.0
+         * @return A promise for a Readable Stream containing a V8 heap snapshot
+         */
+        getHeapSnapshot(): Promise<Readable>;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'exit', listener: (exitCode: number) => void): this;
+        addListener(event: 'message', listener: (value: any) => void): this;
+        addListener(event: 'messageerror', listener: (error: Error) => void): this;
+        addListener(event: 'online', listener: () => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'exit', exitCode: number): boolean;
+        emit(event: 'message', value: any): boolean;
+        emit(event: 'messageerror', error: Error): boolean;
+        emit(event: 'online'): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'exit', listener: (exitCode: number) => void): this;
+        on(event: 'message', listener: (value: any) => void): this;
+        on(event: 'messageerror', listener: (error: Error) => void): this;
+        on(event: 'online', listener: () => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'exit', listener: (exitCode: number) => void): this;
+        once(event: 'message', listener: (value: any) => void): this;
+        once(event: 'messageerror', listener: (error: Error) => void): this;
+        once(event: 'online', listener: () => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'exit', listener: (exitCode: number) => void): this;
+        prependListener(event: 'message', listener: (value: any) => void): this;
+        prependListener(event: 'messageerror', listener: (error: Error) => void): this;
+        prependListener(event: 'online', listener: () => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'exit', listener: (exitCode: number) => void): this;
+        prependOnceListener(event: 'message', listener: (value: any) => void): this;
+        prependOnceListener(event: 'messageerror', listener: (error: Error) => void): this;
+        prependOnceListener(event: 'online', listener: () => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        removeListener(event: 'error', listener: (err: Error) => void): this;
+        removeListener(event: 'exit', listener: (exitCode: number) => void): this;
+        removeListener(event: 'message', listener: (value: any) => void): this;
+        removeListener(event: 'messageerror', listener: (error: Error) => void): this;
+        removeListener(event: 'online', listener: () => void): this;
+        removeListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        off(event: 'error', listener: (err: Error) => void): this;
+        off(event: 'exit', listener: (exitCode: number) => void): this;
+        off(event: 'message', listener: (value: any) => void): this;
+        off(event: 'messageerror', listener: (error: Error) => void): this;
+        off(event: 'online', listener: () => void): this;
+        off(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    interface BroadcastChannel extends NodeJS.RefCounted {}
+    /**
+     * Instances of `BroadcastChannel` allow asynchronous one-to-many communication
+     * with all other `BroadcastChannel` instances bound to the same channel name.
+     *
+     * ```js
+     * 'use strict';
+     *
+     * const {
+     *   isMainThread,
+     *   BroadcastChannel,
+     *   Worker
+     * } = require('worker_threads');
+     *
+     * const bc = new BroadcastChannel('hello');
+     *
+     * if (isMainThread) {
+     *   let c = 0;
+     *   bc.onmessage = (event) => {
+     *     console.log(event.data);
+     *     if (++c === 10) bc.close();
+     *   };
+     *   for (let n = 0; n < 10; n++)
+     *     new Worker(__filename);
+     * } else {
+     *   bc.postMessage('hello from every worker');
+     *   bc.close();
+     * }
+     * ```
+     * @since v15.4.0
+     */
+    class BroadcastChannel {
+        readonly name: string;
+        /**
+         * Invoked with a single \`MessageEvent\` argument when a message is received.
+         * @since v15.4.0
+         */
+        onmessage: (message: unknown) => void;
+        /**
+         * Invoked with a received message cannot be deserialized.
+         * @since v15.4.0
+         */
+        onmessageerror: (message: unknown) => void;
+        constructor(name: string);
+        /**
+         * Closes the `BroadcastChannel` connection.
+         * @since v15.4.0
+         */
+        close(): void;
+        /**
+         * @since v15.4.0
+         * @param message Any cloneable JavaScript value.
+         */
+        postMessage(message: unknown): void;
+    }
+    /**
+     * Mark an object as not transferable. If `object` occurs in the transfer list of
+     * a `port.postMessage()` call, it is ignored.
+     *
+     * In particular, this makes sense for objects that can be cloned, rather than
+     * transferred, and which are used by other objects on the sending side.
+     * For example, Node.js marks the `ArrayBuffer`s it uses for its `Buffer pool` with this.
+     *
+     * This operation cannot be undone.
+     *
+     * ```js
+     * const { MessageChannel, markAsUntransferable } = require('worker_threads');
+     *
+     * const pooledBuffer = new ArrayBuffer(8);
+     * const typedArray1 = new Uint8Array(pooledBuffer);
+     * const typedArray2 = new Float64Array(pooledBuffer);
+     *
+     * markAsUntransferable(pooledBuffer);
+     *
+     * const { port1 } = new MessageChannel();
+     * port1.postMessage(typedArray1, [ typedArray1.buffer ]);
+     *
+     * // The following line prints the contents of typedArray1 -- it still owns
+     * // its memory and has been cloned, not transferred. Without
+     * // `markAsUntransferable()`, this would print an empty Uint8Array.
+     * // typedArray2 is intact as well.
+     * console.log(typedArray1);
+     * console.log(typedArray2);
+     * ```
+     *
+     * There is no equivalent to this API in browsers.
+     * @since v14.5.0, v12.19.0
+     */
+    function markAsUntransferable(object: object): void;
+    /**
+     * Transfer a `MessagePort` to a different `vm` Context. The original `port`object is rendered unusable, and the returned `MessagePort` instance
+     * takes its place.
+     *
+     * The returned `MessagePort` is an object in the target context and
+     * inherits from its global `Object` class. Objects passed to the [`port.onmessage()`](https://developer.mozilla.org/en-US/docs/Web/API/MessagePort/onmessage) listener are also created in the
+     * target context
+     * and inherit from its global `Object` class.
+     *
+     * However, the created `MessagePort` no longer inherits from [`EventTarget`](https://developer.mozilla.org/en-US/docs/Web/API/EventTarget), and only
+     * [`port.onmessage()`](https://developer.mozilla.org/en-US/docs/Web/API/MessagePort/onmessage) can be used to receive
+     * events using it.
+     * @since v11.13.0
+     * @param port The message port to transfer.
+     * @param contextifiedSandbox A `contextified` object as returned by the `vm.createContext()` method.
+     */
+    function moveMessagePortToContext(port: MessagePort, contextifiedSandbox: Context): MessagePort;
+    /**
+     * Receive a single message from a given `MessagePort`. If no message is available,`undefined` is returned, otherwise an object with a single `message` property
+     * that contains the message payload, corresponding to the oldest message in the`MessagePort`’s queue.
+     *
+     * ```js
+     * const { MessageChannel, receiveMessageOnPort } = require('worker_threads');
+     * const { port1, port2 } = new MessageChannel();
+     * port1.postMessage({ hello: 'world' });
+     *
+     * console.log(receiveMessageOnPort(port2));
+     * // Prints: { message: { hello: 'world' } }
+     * console.log(receiveMessageOnPort(port2));
+     * // Prints: undefined
+     * ```
+     *
+     * When this function is used, no `'message'` event is emitted and the`onmessage` listener is not invoked.
+     * @since v12.3.0
+     */
+    function receiveMessageOnPort(port: MessagePort):
+        | {
+              message: any;
+          }
+        | undefined;
+    type Serializable = string | object | number | boolean | bigint;
+    /**
+     * Within a worker thread, `worker.getEnvironmentData()` returns a clone
+     * of data passed to the spawning thread's `worker.setEnvironmentData()`.
+     * Every new `Worker` receives its own copy of the environment data
+     * automatically.
+     *
+     * ```js
+     * const {
+     *   Worker,
+     *   isMainThread,
+     *   setEnvironmentData,
+     *   getEnvironmentData,
+     * } = require('worker_threads');
+     *
+     * if (isMainThread) {
+     *   setEnvironmentData('Hello', 'World!');
+     *   const worker = new Worker(__filename);
+     * } else {
+     *   console.log(getEnvironmentData('Hello'));  // Prints 'World!'.
+     * }
+     * ```
+     * @since v15.12.0, v14.18.0
+     * @param key Any arbitrary, cloneable JavaScript value that can be used as a {Map} key.
+     */
+    function getEnvironmentData(key: Serializable): Serializable;
+    /**
+     * The `worker.setEnvironmentData()` API sets the content of`worker.getEnvironmentData()` in the current thread and all new `Worker`instances spawned from the current context.
+     * @since v15.12.0, v14.18.0
+     * @param key Any arbitrary, cloneable JavaScript value that can be used as a {Map} key.
+     * @param value Any arbitrary, cloneable JavaScript value that will be cloned and passed automatically to all new `Worker` instances. If `value` is passed as `undefined`, any previously set value
+     * for the `key` will be deleted.
+     */
+    function setEnvironmentData(key: Serializable, value: Serializable): void;
+}
+declare module 'node:worker_threads' {
+    export * from 'worker_threads';
+}
diff --git a/igv_component/node_modules/@types/node/ts4.8/zlib.d.ts b/igv_component/node_modules/@types/node/ts4.8/zlib.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..1d7f0c0e507405e9584cd7158cbbea92234afa84
--- /dev/null
+++ b/igv_component/node_modules/@types/node/ts4.8/zlib.d.ts
@@ -0,0 +1,517 @@
+/**
+ * The `zlib` module provides compression functionality implemented using Gzip,
+ * Deflate/Inflate, and Brotli.
+ *
+ * To access it:
+ *
+ * ```js
+ * const zlib = require('zlib');
+ * ```
+ *
+ * Compression and decompression are built around the Node.js `Streams API`.
+ *
+ * Compressing or decompressing a stream (such as a file) can be accomplished by
+ * piping the source stream through a `zlib` `Transform` stream into a destination
+ * stream:
+ *
+ * ```js
+ * const { createGzip } = require('zlib');
+ * const { pipeline } = require('stream');
+ * const {
+ *   createReadStream,
+ *   createWriteStream
+ * } = require('fs');
+ *
+ * const gzip = createGzip();
+ * const source = createReadStream('input.txt');
+ * const destination = createWriteStream('input.txt.gz');
+ *
+ * pipeline(source, gzip, destination, (err) => {
+ *   if (err) {
+ *     console.error('An error occurred:', err);
+ *     process.exitCode = 1;
+ *   }
+ * });
+ *
+ * // Or, Promisified
+ *
+ * const { promisify } = require('util');
+ * const pipe = promisify(pipeline);
+ *
+ * async function do_gzip(input, output) {
+ *   const gzip = createGzip();
+ *   const source = createReadStream(input);
+ *   const destination = createWriteStream(output);
+ *   await pipe(source, gzip, destination);
+ * }
+ *
+ * do_gzip('input.txt', 'input.txt.gz')
+ *   .catch((err) => {
+ *     console.error('An error occurred:', err);
+ *     process.exitCode = 1;
+ *   });
+ * ```
+ *
+ * It is also possible to compress or decompress data in a single step:
+ *
+ * ```js
+ * const { deflate, unzip } = require('zlib');
+ *
+ * const input = '.................................';
+ * deflate(input, (err, buffer) => {
+ *   if (err) {
+ *     console.error('An error occurred:', err);
+ *     process.exitCode = 1;
+ *   }
+ *   console.log(buffer.toString('base64'));
+ * });
+ *
+ * const buffer = Buffer.from('eJzT0yMAAGTvBe8=', 'base64');
+ * unzip(buffer, (err, buffer) => {
+ *   if (err) {
+ *     console.error('An error occurred:', err);
+ *     process.exitCode = 1;
+ *   }
+ *   console.log(buffer.toString());
+ * });
+ *
+ * // Or, Promisified
+ *
+ * const { promisify } = require('util');
+ * const do_unzip = promisify(unzip);
+ *
+ * do_unzip(buffer)
+ *   .then((buf) => console.log(buf.toString()))
+ *   .catch((err) => {
+ *     console.error('An error occurred:', err);
+ *     process.exitCode = 1;
+ *   });
+ * ```
+ * @since v0.5.8
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/zlib.js)
+ */
+declare module 'zlib' {
+    import * as stream from 'node:stream';
+    interface ZlibOptions {
+        /**
+         * @default constants.Z_NO_FLUSH
+         */
+        flush?: number | undefined;
+        /**
+         * @default constants.Z_FINISH
+         */
+        finishFlush?: number | undefined;
+        /**
+         * @default 16*1024
+         */
+        chunkSize?: number | undefined;
+        windowBits?: number | undefined;
+        level?: number | undefined; // compression only
+        memLevel?: number | undefined; // compression only
+        strategy?: number | undefined; // compression only
+        dictionary?: NodeJS.ArrayBufferView | ArrayBuffer | undefined; // deflate/inflate only, empty dictionary by default
+        info?: boolean | undefined;
+        maxOutputLength?: number | undefined;
+    }
+    interface BrotliOptions {
+        /**
+         * @default constants.BROTLI_OPERATION_PROCESS
+         */
+        flush?: number | undefined;
+        /**
+         * @default constants.BROTLI_OPERATION_FINISH
+         */
+        finishFlush?: number | undefined;
+        /**
+         * @default 16*1024
+         */
+        chunkSize?: number | undefined;
+        params?:
+            | {
+                  /**
+                   * Each key is a `constants.BROTLI_*` constant.
+                   */
+                  [key: number]: boolean | number;
+              }
+            | undefined;
+        maxOutputLength?: number | undefined;
+    }
+    interface Zlib {
+        /** @deprecated Use bytesWritten instead. */
+        readonly bytesRead: number;
+        readonly bytesWritten: number;
+        shell?: boolean | string | undefined;
+        close(callback?: () => void): void;
+        flush(kind?: number, callback?: () => void): void;
+        flush(callback?: () => void): void;
+    }
+    interface ZlibParams {
+        params(level: number, strategy: number, callback: () => void): void;
+    }
+    interface ZlibReset {
+        reset(): void;
+    }
+    interface BrotliCompress extends stream.Transform, Zlib {}
+    interface BrotliDecompress extends stream.Transform, Zlib {}
+    interface Gzip extends stream.Transform, Zlib {}
+    interface Gunzip extends stream.Transform, Zlib {}
+    interface Deflate extends stream.Transform, Zlib, ZlibReset, ZlibParams {}
+    interface Inflate extends stream.Transform, Zlib, ZlibReset {}
+    interface DeflateRaw extends stream.Transform, Zlib, ZlibReset, ZlibParams {}
+    interface InflateRaw extends stream.Transform, Zlib, ZlibReset {}
+    interface Unzip extends stream.Transform, Zlib {}
+    /**
+     * Creates and returns a new `BrotliCompress` object.
+     * @since v11.7.0, v10.16.0
+     */
+    function createBrotliCompress(options?: BrotliOptions): BrotliCompress;
+    /**
+     * Creates and returns a new `BrotliDecompress` object.
+     * @since v11.7.0, v10.16.0
+     */
+    function createBrotliDecompress(options?: BrotliOptions): BrotliDecompress;
+    /**
+     * Creates and returns a new `Gzip` object.
+     * See `example`.
+     * @since v0.5.8
+     */
+    function createGzip(options?: ZlibOptions): Gzip;
+    /**
+     * Creates and returns a new `Gunzip` object.
+     * @since v0.5.8
+     */
+    function createGunzip(options?: ZlibOptions): Gunzip;
+    /**
+     * Creates and returns a new `Deflate` object.
+     * @since v0.5.8
+     */
+    function createDeflate(options?: ZlibOptions): Deflate;
+    /**
+     * Creates and returns a new `Inflate` object.
+     * @since v0.5.8
+     */
+    function createInflate(options?: ZlibOptions): Inflate;
+    /**
+     * Creates and returns a new `DeflateRaw` object.
+     *
+     * An upgrade of zlib from 1.2.8 to 1.2.11 changed behavior when `windowBits`is set to 8 for raw deflate streams. zlib would automatically set `windowBits`to 9 if was initially set to 8\. Newer
+     * versions of zlib will throw an exception,
+     * so Node.js restored the original behavior of upgrading a value of 8 to 9,
+     * since passing `windowBits = 9` to zlib actually results in a compressed stream
+     * that effectively uses an 8-bit window only.
+     * @since v0.5.8
+     */
+    function createDeflateRaw(options?: ZlibOptions): DeflateRaw;
+    /**
+     * Creates and returns a new `InflateRaw` object.
+     * @since v0.5.8
+     */
+    function createInflateRaw(options?: ZlibOptions): InflateRaw;
+    /**
+     * Creates and returns a new `Unzip` object.
+     * @since v0.5.8
+     */
+    function createUnzip(options?: ZlibOptions): Unzip;
+    type InputType = string | ArrayBuffer | NodeJS.ArrayBufferView;
+    type CompressCallback = (error: Error | null, result: Buffer) => void;
+    /**
+     * @since v11.7.0, v10.16.0
+     */
+    function brotliCompress(buf: InputType, options: BrotliOptions, callback: CompressCallback): void;
+    function brotliCompress(buf: InputType, callback: CompressCallback): void;
+    namespace brotliCompress {
+        function __promisify__(buffer: InputType, options?: BrotliOptions): Promise<Buffer>;
+    }
+    /**
+     * Compress a chunk of data with `BrotliCompress`.
+     * @since v11.7.0, v10.16.0
+     */
+    function brotliCompressSync(buf: InputType, options?: BrotliOptions): Buffer;
+    /**
+     * @since v11.7.0, v10.16.0
+     */
+    function brotliDecompress(buf: InputType, options: BrotliOptions, callback: CompressCallback): void;
+    function brotliDecompress(buf: InputType, callback: CompressCallback): void;
+    namespace brotliDecompress {
+        function __promisify__(buffer: InputType, options?: BrotliOptions): Promise<Buffer>;
+    }
+    /**
+     * Decompress a chunk of data with `BrotliDecompress`.
+     * @since v11.7.0, v10.16.0
+     */
+    function brotliDecompressSync(buf: InputType, options?: BrotliOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function deflate(buf: InputType, callback: CompressCallback): void;
+    function deflate(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace deflate {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Compress a chunk of data with `Deflate`.
+     * @since v0.11.12
+     */
+    function deflateSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function deflateRaw(buf: InputType, callback: CompressCallback): void;
+    function deflateRaw(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace deflateRaw {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Compress a chunk of data with `DeflateRaw`.
+     * @since v0.11.12
+     */
+    function deflateRawSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function gzip(buf: InputType, callback: CompressCallback): void;
+    function gzip(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace gzip {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Compress a chunk of data with `Gzip`.
+     * @since v0.11.12
+     */
+    function gzipSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function gunzip(buf: InputType, callback: CompressCallback): void;
+    function gunzip(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace gunzip {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Decompress a chunk of data with `Gunzip`.
+     * @since v0.11.12
+     */
+    function gunzipSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function inflate(buf: InputType, callback: CompressCallback): void;
+    function inflate(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace inflate {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Decompress a chunk of data with `Inflate`.
+     * @since v0.11.12
+     */
+    function inflateSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function inflateRaw(buf: InputType, callback: CompressCallback): void;
+    function inflateRaw(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace inflateRaw {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Decompress a chunk of data with `InflateRaw`.
+     * @since v0.11.12
+     */
+    function inflateRawSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function unzip(buf: InputType, callback: CompressCallback): void;
+    function unzip(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace unzip {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Decompress a chunk of data with `Unzip`.
+     * @since v0.11.12
+     */
+    function unzipSync(buf: InputType, options?: ZlibOptions): Buffer;
+    namespace constants {
+        const BROTLI_DECODE: number;
+        const BROTLI_DECODER_ERROR_ALLOC_BLOCK_TYPE_TREES: number;
+        const BROTLI_DECODER_ERROR_ALLOC_CONTEXT_MAP: number;
+        const BROTLI_DECODER_ERROR_ALLOC_CONTEXT_MODES: number;
+        const BROTLI_DECODER_ERROR_ALLOC_RING_BUFFER_1: number;
+        const BROTLI_DECODER_ERROR_ALLOC_RING_BUFFER_2: number;
+        const BROTLI_DECODER_ERROR_ALLOC_TREE_GROUPS: number;
+        const BROTLI_DECODER_ERROR_DICTIONARY_NOT_SET: number;
+        const BROTLI_DECODER_ERROR_FORMAT_BLOCK_LENGTH_1: number;
+        const BROTLI_DECODER_ERROR_FORMAT_BLOCK_LENGTH_2: number;
+        const BROTLI_DECODER_ERROR_FORMAT_CL_SPACE: number;
+        const BROTLI_DECODER_ERROR_FORMAT_CONTEXT_MAP_REPEAT: number;
+        const BROTLI_DECODER_ERROR_FORMAT_DICTIONARY: number;
+        const BROTLI_DECODER_ERROR_FORMAT_DISTANCE: number;
+        const BROTLI_DECODER_ERROR_FORMAT_EXUBERANT_META_NIBBLE: number;
+        const BROTLI_DECODER_ERROR_FORMAT_EXUBERANT_NIBBLE: number;
+        const BROTLI_DECODER_ERROR_FORMAT_HUFFMAN_SPACE: number;
+        const BROTLI_DECODER_ERROR_FORMAT_PADDING_1: number;
+        const BROTLI_DECODER_ERROR_FORMAT_PADDING_2: number;
+        const BROTLI_DECODER_ERROR_FORMAT_RESERVED: number;
+        const BROTLI_DECODER_ERROR_FORMAT_SIMPLE_HUFFMAN_ALPHABET: number;
+        const BROTLI_DECODER_ERROR_FORMAT_SIMPLE_HUFFMAN_SAME: number;
+        const BROTLI_DECODER_ERROR_FORMAT_TRANSFORM: number;
+        const BROTLI_DECODER_ERROR_FORMAT_WINDOW_BITS: number;
+        const BROTLI_DECODER_ERROR_INVALID_ARGUMENTS: number;
+        const BROTLI_DECODER_ERROR_UNREACHABLE: number;
+        const BROTLI_DECODER_NEEDS_MORE_INPUT: number;
+        const BROTLI_DECODER_NEEDS_MORE_OUTPUT: number;
+        const BROTLI_DECODER_NO_ERROR: number;
+        const BROTLI_DECODER_PARAM_DISABLE_RING_BUFFER_REALLOCATION: number;
+        const BROTLI_DECODER_PARAM_LARGE_WINDOW: number;
+        const BROTLI_DECODER_RESULT_ERROR: number;
+        const BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT: number;
+        const BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT: number;
+        const BROTLI_DECODER_RESULT_SUCCESS: number;
+        const BROTLI_DECODER_SUCCESS: number;
+        const BROTLI_DEFAULT_MODE: number;
+        const BROTLI_DEFAULT_QUALITY: number;
+        const BROTLI_DEFAULT_WINDOW: number;
+        const BROTLI_ENCODE: number;
+        const BROTLI_LARGE_MAX_WINDOW_BITS: number;
+        const BROTLI_MAX_INPUT_BLOCK_BITS: number;
+        const BROTLI_MAX_QUALITY: number;
+        const BROTLI_MAX_WINDOW_BITS: number;
+        const BROTLI_MIN_INPUT_BLOCK_BITS: number;
+        const BROTLI_MIN_QUALITY: number;
+        const BROTLI_MIN_WINDOW_BITS: number;
+        const BROTLI_MODE_FONT: number;
+        const BROTLI_MODE_GENERIC: number;
+        const BROTLI_MODE_TEXT: number;
+        const BROTLI_OPERATION_EMIT_METADATA: number;
+        const BROTLI_OPERATION_FINISH: number;
+        const BROTLI_OPERATION_FLUSH: number;
+        const BROTLI_OPERATION_PROCESS: number;
+        const BROTLI_PARAM_DISABLE_LITERAL_CONTEXT_MODELING: number;
+        const BROTLI_PARAM_LARGE_WINDOW: number;
+        const BROTLI_PARAM_LGBLOCK: number;
+        const BROTLI_PARAM_LGWIN: number;
+        const BROTLI_PARAM_MODE: number;
+        const BROTLI_PARAM_NDIRECT: number;
+        const BROTLI_PARAM_NPOSTFIX: number;
+        const BROTLI_PARAM_QUALITY: number;
+        const BROTLI_PARAM_SIZE_HINT: number;
+        const DEFLATE: number;
+        const DEFLATERAW: number;
+        const GUNZIP: number;
+        const GZIP: number;
+        const INFLATE: number;
+        const INFLATERAW: number;
+        const UNZIP: number;
+        // Allowed flush values.
+        const Z_NO_FLUSH: number;
+        const Z_PARTIAL_FLUSH: number;
+        const Z_SYNC_FLUSH: number;
+        const Z_FULL_FLUSH: number;
+        const Z_FINISH: number;
+        const Z_BLOCK: number;
+        const Z_TREES: number;
+        // Return codes for the compression/decompression functions.
+        // Negative values are errors, positive values are used for special but normal events.
+        const Z_OK: number;
+        const Z_STREAM_END: number;
+        const Z_NEED_DICT: number;
+        const Z_ERRNO: number;
+        const Z_STREAM_ERROR: number;
+        const Z_DATA_ERROR: number;
+        const Z_MEM_ERROR: number;
+        const Z_BUF_ERROR: number;
+        const Z_VERSION_ERROR: number;
+        // Compression levels.
+        const Z_NO_COMPRESSION: number;
+        const Z_BEST_SPEED: number;
+        const Z_BEST_COMPRESSION: number;
+        const Z_DEFAULT_COMPRESSION: number;
+        // Compression strategy.
+        const Z_FILTERED: number;
+        const Z_HUFFMAN_ONLY: number;
+        const Z_RLE: number;
+        const Z_FIXED: number;
+        const Z_DEFAULT_STRATEGY: number;
+        const Z_DEFAULT_WINDOWBITS: number;
+        const Z_MIN_WINDOWBITS: number;
+        const Z_MAX_WINDOWBITS: number;
+        const Z_MIN_CHUNK: number;
+        const Z_MAX_CHUNK: number;
+        const Z_DEFAULT_CHUNK: number;
+        const Z_MIN_MEMLEVEL: number;
+        const Z_MAX_MEMLEVEL: number;
+        const Z_DEFAULT_MEMLEVEL: number;
+        const Z_MIN_LEVEL: number;
+        const Z_MAX_LEVEL: number;
+        const Z_DEFAULT_LEVEL: number;
+        const ZLIB_VERNUM: number;
+    }
+    // Allowed flush values.
+    /** @deprecated Use `constants.Z_NO_FLUSH` */
+    const Z_NO_FLUSH: number;
+    /** @deprecated Use `constants.Z_PARTIAL_FLUSH` */
+    const Z_PARTIAL_FLUSH: number;
+    /** @deprecated Use `constants.Z_SYNC_FLUSH` */
+    const Z_SYNC_FLUSH: number;
+    /** @deprecated Use `constants.Z_FULL_FLUSH` */
+    const Z_FULL_FLUSH: number;
+    /** @deprecated Use `constants.Z_FINISH` */
+    const Z_FINISH: number;
+    /** @deprecated Use `constants.Z_BLOCK` */
+    const Z_BLOCK: number;
+    /** @deprecated Use `constants.Z_TREES` */
+    const Z_TREES: number;
+    // Return codes for the compression/decompression functions.
+    // Negative values are errors, positive values are used for special but normal events.
+    /** @deprecated Use `constants.Z_OK` */
+    const Z_OK: number;
+    /** @deprecated Use `constants.Z_STREAM_END` */
+    const Z_STREAM_END: number;
+    /** @deprecated Use `constants.Z_NEED_DICT` */
+    const Z_NEED_DICT: number;
+    /** @deprecated Use `constants.Z_ERRNO` */
+    const Z_ERRNO: number;
+    /** @deprecated Use `constants.Z_STREAM_ERROR` */
+    const Z_STREAM_ERROR: number;
+    /** @deprecated Use `constants.Z_DATA_ERROR` */
+    const Z_DATA_ERROR: number;
+    /** @deprecated Use `constants.Z_MEM_ERROR` */
+    const Z_MEM_ERROR: number;
+    /** @deprecated Use `constants.Z_BUF_ERROR` */
+    const Z_BUF_ERROR: number;
+    /** @deprecated Use `constants.Z_VERSION_ERROR` */
+    const Z_VERSION_ERROR: number;
+    // Compression levels.
+    /** @deprecated Use `constants.Z_NO_COMPRESSION` */
+    const Z_NO_COMPRESSION: number;
+    /** @deprecated Use `constants.Z_BEST_SPEED` */
+    const Z_BEST_SPEED: number;
+    /** @deprecated Use `constants.Z_BEST_COMPRESSION` */
+    const Z_BEST_COMPRESSION: number;
+    /** @deprecated Use `constants.Z_DEFAULT_COMPRESSION` */
+    const Z_DEFAULT_COMPRESSION: number;
+    // Compression strategy.
+    /** @deprecated Use `constants.Z_FILTERED` */
+    const Z_FILTERED: number;
+    /** @deprecated Use `constants.Z_HUFFMAN_ONLY` */
+    const Z_HUFFMAN_ONLY: number;
+    /** @deprecated Use `constants.Z_RLE` */
+    const Z_RLE: number;
+    /** @deprecated Use `constants.Z_FIXED` */
+    const Z_FIXED: number;
+    /** @deprecated Use `constants.Z_DEFAULT_STRATEGY` */
+    const Z_DEFAULT_STRATEGY: number;
+    /** @deprecated */
+    const Z_BINARY: number;
+    /** @deprecated */
+    const Z_TEXT: number;
+    /** @deprecated */
+    const Z_ASCII: number;
+    /** @deprecated  */
+    const Z_UNKNOWN: number;
+    /** @deprecated */
+    const Z_DEFLATED: number;
+}
+declare module 'node:zlib' {
+    export * from 'zlib';
+}
diff --git a/igv_component/node_modules/@types/node/tty.d.ts b/igv_component/node_modules/@types/node/tty.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6473f8db7c69ea519bbb6e6450fb2d236f8a1674
--- /dev/null
+++ b/igv_component/node_modules/@types/node/tty.d.ts
@@ -0,0 +1,206 @@
+/**
+ * The `tty` module provides the `tty.ReadStream` and `tty.WriteStream` classes.
+ * In most cases, it will not be necessary or possible to use this module directly.
+ * However, it can be accessed using:
+ *
+ * ```js
+ * const tty = require('tty');
+ * ```
+ *
+ * When Node.js detects that it is being run with a text terminal ("TTY")
+ * attached, `process.stdin` will, by default, be initialized as an instance of`tty.ReadStream` and both `process.stdout` and `process.stderr` will, by
+ * default, be instances of `tty.WriteStream`. The preferred method of determining
+ * whether Node.js is being run within a TTY context is to check that the value of
+ * the `process.stdout.isTTY` property is `true`:
+ *
+ * ```console
+ * $ node -p -e "Boolean(process.stdout.isTTY)"
+ * true
+ * $ node -p -e "Boolean(process.stdout.isTTY)" | cat
+ * false
+ * ```
+ *
+ * In most cases, there should be little to no reason for an application to
+ * manually create instances of the `tty.ReadStream` and `tty.WriteStream`classes.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/tty.js)
+ */
+declare module 'tty' {
+    import * as net from 'node:net';
+    /**
+     * The `tty.isatty()` method returns `true` if the given `fd` is associated with
+     * a TTY and `false` if it is not, including whenever `fd` is not a non-negative
+     * integer.
+     * @since v0.5.8
+     * @param fd A numeric file descriptor
+     */
+    function isatty(fd: number): boolean;
+    /**
+     * Represents the readable side of a TTY. In normal circumstances `process.stdin` will be the only `tty.ReadStream` instance in a Node.js
+     * process and there should be no reason to create additional instances.
+     * @since v0.5.8
+     */
+    class ReadStream extends net.Socket {
+        constructor(fd: number, options?: net.SocketConstructorOpts);
+        /**
+         * A `boolean` that is `true` if the TTY is currently configured to operate as a
+         * raw device. Defaults to `false`.
+         * @since v0.7.7
+         */
+        isRaw: boolean;
+        /**
+         * Allows configuration of `tty.ReadStream` so that it operates as a raw device.
+         *
+         * When in raw mode, input is always available character-by-character, not
+         * including modifiers. Additionally, all special processing of characters by the
+         * terminal is disabled, including echoing input
+         * characters. Ctrl+C will no longer cause a `SIGINT` when
+         * in this mode.
+         * @since v0.7.7
+         * @param mode If `true`, configures the `tty.ReadStream` to operate as a raw device. If `false`, configures the `tty.ReadStream` to operate in its default mode. The `readStream.isRaw`
+         * property will be set to the resulting mode.
+         * @return The read stream instance.
+         */
+        setRawMode(mode: boolean): this;
+        /**
+         * A `boolean` that is always `true` for `tty.ReadStream` instances.
+         * @since v0.5.8
+         */
+        isTTY: boolean;
+    }
+    /**
+     * -1 - to the left from cursor
+     *  0 - the entire line
+     *  1 - to the right from cursor
+     */
+    type Direction = -1 | 0 | 1;
+    /**
+     * Represents the writable side of a TTY. In normal circumstances,`process.stdout` and `process.stderr` will be the only`tty.WriteStream` instances created for a Node.js process and there
+     * should be no reason to create additional instances.
+     * @since v0.5.8
+     */
+    class WriteStream extends net.Socket {
+        constructor(fd: number);
+        addListener(event: string, listener: (...args: any[]) => void): this;
+        addListener(event: 'resize', listener: () => void): this;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        emit(event: 'resize'): boolean;
+        on(event: string, listener: (...args: any[]) => void): this;
+        on(event: 'resize', listener: () => void): this;
+        once(event: string, listener: (...args: any[]) => void): this;
+        once(event: 'resize', listener: () => void): this;
+        prependListener(event: string, listener: (...args: any[]) => void): this;
+        prependListener(event: 'resize', listener: () => void): this;
+        prependOnceListener(event: string, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'resize', listener: () => void): this;
+        /**
+         * `writeStream.clearLine()` clears the current line of this `WriteStream` in a
+         * direction identified by `dir`.
+         * @since v0.7.7
+         * @param callback Invoked once the operation completes.
+         * @return `false` if the stream wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+         */
+        clearLine(dir: Direction, callback?: () => void): boolean;
+        /**
+         * `writeStream.clearScreenDown()` clears this `WriteStream` from the current
+         * cursor down.
+         * @since v0.7.7
+         * @param callback Invoked once the operation completes.
+         * @return `false` if the stream wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+         */
+        clearScreenDown(callback?: () => void): boolean;
+        /**
+         * `writeStream.cursorTo()` moves this `WriteStream`'s cursor to the specified
+         * position.
+         * @since v0.7.7
+         * @param callback Invoked once the operation completes.
+         * @return `false` if the stream wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+         */
+        cursorTo(x: number, y?: number, callback?: () => void): boolean;
+        cursorTo(x: number, callback: () => void): boolean;
+        /**
+         * `writeStream.moveCursor()` moves this `WriteStream`'s cursor _relative_ to its
+         * current position.
+         * @since v0.7.7
+         * @param callback Invoked once the operation completes.
+         * @return `false` if the stream wishes for the calling code to wait for the `'drain'` event to be emitted before continuing to write additional data; otherwise `true`.
+         */
+        moveCursor(dx: number, dy: number, callback?: () => void): boolean;
+        /**
+         * Returns:
+         *
+         * * `1` for 2,
+         * * `4` for 16,
+         * * `8` for 256,
+         * * `24` for 16,777,216 colors supported.
+         *
+         * Use this to determine what colors the terminal supports. Due to the nature of
+         * colors in terminals it is possible to either have false positives or false
+         * negatives. It depends on process information and the environment variables that
+         * may lie about what terminal is used.
+         * It is possible to pass in an `env` object to simulate the usage of a specific
+         * terminal. This can be useful to check how specific environment settings behave.
+         *
+         * To enforce a specific color support, use one of the below environment settings.
+         *
+         * * 2 colors: `FORCE_COLOR = 0` (Disables colors)
+         * * 16 colors: `FORCE_COLOR = 1`
+         * * 256 colors: `FORCE_COLOR = 2`
+         * * 16,777,216 colors: `FORCE_COLOR = 3`
+         *
+         * Disabling color support is also possible by using the `NO_COLOR` and`NODE_DISABLE_COLORS` environment variables.
+         * @since v9.9.0
+         * @param [env=process.env] An object containing the environment variables to check. This enables simulating the usage of a specific terminal.
+         */
+        getColorDepth(env?: object): number;
+        /**
+         * Returns `true` if the `writeStream` supports at least as many colors as provided
+         * in `count`. Minimum support is 2 (black and white).
+         *
+         * This has the same false positives and negatives as described in `writeStream.getColorDepth()`.
+         *
+         * ```js
+         * process.stdout.hasColors();
+         * // Returns true or false depending on if `stdout` supports at least 16 colors.
+         * process.stdout.hasColors(256);
+         * // Returns true or false depending on if `stdout` supports at least 256 colors.
+         * process.stdout.hasColors({ TMUX: '1' });
+         * // Returns true.
+         * process.stdout.hasColors(2 ** 24, { TMUX: '1' });
+         * // Returns false (the environment setting pretends to support 2 ** 8 colors).
+         * ```
+         * @since v11.13.0, v10.16.0
+         * @param [count=16] The number of colors that are requested (minimum 2).
+         * @param [env=process.env] An object containing the environment variables to check. This enables simulating the usage of a specific terminal.
+         */
+        hasColors(count?: number): boolean;
+        hasColors(env?: object): boolean;
+        hasColors(count: number, env?: object): boolean;
+        /**
+         * `writeStream.getWindowSize()` returns the size of the TTY
+         * corresponding to this `WriteStream`. The array is of the type`[numColumns, numRows]` where `numColumns` and `numRows` represent the number
+         * of columns and rows in the corresponding TTY.
+         * @since v0.7.7
+         */
+        getWindowSize(): [number, number];
+        /**
+         * A `number` specifying the number of columns the TTY currently has. This property
+         * is updated whenever the `'resize'` event is emitted.
+         * @since v0.7.7
+         */
+        columns: number;
+        /**
+         * A `number` specifying the number of rows the TTY currently has. This property
+         * is updated whenever the `'resize'` event is emitted.
+         * @since v0.7.7
+         */
+        rows: number;
+        /**
+         * A `boolean` that is always `true`.
+         * @since v0.5.8
+         */
+        isTTY: boolean;
+    }
+}
+declare module 'node:tty' {
+    export * from 'tty';
+}
diff --git a/igv_component/node_modules/@types/node/url.d.ts b/igv_component/node_modules/@types/node/url.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..18362c8aa03c7d0c4e6fe11ef186d9fbc0e1b407
--- /dev/null
+++ b/igv_component/node_modules/@types/node/url.d.ts
@@ -0,0 +1,897 @@
+/**
+ * The `url` module provides utilities for URL resolution and parsing. It can be
+ * accessed using:
+ *
+ * ```js
+ * import url from 'url';
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/url.js)
+ */
+declare module 'url' {
+    import { Blob } from 'node:buffer';
+    import { ClientRequestArgs } from 'node:http';
+    import { ParsedUrlQuery, ParsedUrlQueryInput } from 'node:querystring';
+    // Input to `url.format`
+    interface UrlObject {
+        auth?: string | null | undefined;
+        hash?: string | null | undefined;
+        host?: string | null | undefined;
+        hostname?: string | null | undefined;
+        href?: string | null | undefined;
+        pathname?: string | null | undefined;
+        protocol?: string | null | undefined;
+        search?: string | null | undefined;
+        slashes?: boolean | null | undefined;
+        port?: string | number | null | undefined;
+        query?: string | null | ParsedUrlQueryInput | undefined;
+    }
+    // Output of `url.parse`
+    interface Url {
+        auth: string | null;
+        hash: string | null;
+        host: string | null;
+        hostname: string | null;
+        href: string;
+        path: string | null;
+        pathname: string | null;
+        protocol: string | null;
+        search: string | null;
+        slashes: boolean | null;
+        port: string | null;
+        query: string | null | ParsedUrlQuery;
+    }
+    interface UrlWithParsedQuery extends Url {
+        query: ParsedUrlQuery;
+    }
+    interface UrlWithStringQuery extends Url {
+        query: string | null;
+    }
+    /**
+     * The `url.parse()` method takes a URL string, parses it, and returns a URL
+     * object.
+     *
+     * A `TypeError` is thrown if `urlString` is not a string.
+     *
+     * A `URIError` is thrown if the `auth` property is present but cannot be decoded.
+     *
+     * Use of the legacy `url.parse()` method is discouraged. Users should
+     * use the WHATWG `URL` API. Because the `url.parse()` method uses a
+     * lenient, non-standard algorithm for parsing URL strings, security
+     * issues can be introduced. Specifically, issues with [host name spoofing](https://hackerone.com/reports/678487) and
+     * incorrect handling of usernames and passwords have been identified.
+     *
+     * Deprecation of this API has been shelved for now primarily due to the the
+     * inability of the [WHATWG API to parse relative URLs](https://github.com/nodejs/node/issues/12682#issuecomment-1154492373).
+     * [Discussions are ongoing](https://github.com/whatwg/url/issues/531) for the  best way to resolve this.
+     *
+     * @since v0.1.25
+     * @param urlString The URL string to parse.
+     * @param [parseQueryString=false] If `true`, the `query` property will always be set to an object returned by the {@link querystring} module's `parse()` method. If `false`, the `query` property
+     * on the returned URL object will be an unparsed, undecoded string.
+     * @param [slashesDenoteHost=false] If `true`, the first token after the literal string `//` and preceding the next `/` will be interpreted as the `host`. For instance, given `//foo/bar`, the
+     * result would be `{host: 'foo', pathname: '/bar'}` rather than `{pathname: '//foo/bar'}`.
+     */
+    function parse(urlString: string): UrlWithStringQuery;
+    function parse(urlString: string, parseQueryString: false | undefined, slashesDenoteHost?: boolean): UrlWithStringQuery;
+    function parse(urlString: string, parseQueryString: true, slashesDenoteHost?: boolean): UrlWithParsedQuery;
+    function parse(urlString: string, parseQueryString: boolean, slashesDenoteHost?: boolean): Url;
+    /**
+     * The `url.format()` method returns a formatted URL string derived from`urlObject`.
+     *
+     * ```js
+     * const url = require('url');
+     * url.format({
+     *   protocol: 'https',
+     *   hostname: 'example.com',
+     *   pathname: '/some/path',
+     *   query: {
+     *     page: 1,
+     *     format: 'json'
+     *   }
+     * });
+     *
+     * // => 'https://example.com/some/path?page=1&#x26;format=json'
+     * ```
+     *
+     * If `urlObject` is not an object or a string, `url.format()` will throw a `TypeError`.
+     *
+     * The formatting process operates as follows:
+     *
+     * * A new empty string `result` is created.
+     * * If `urlObject.protocol` is a string, it is appended as-is to `result`.
+     * * Otherwise, if `urlObject.protocol` is not `undefined` and is not a string, an `Error` is thrown.
+     * * For all string values of `urlObject.protocol` that _do not end_ with an ASCII
+     * colon (`:`) character, the literal string `:` will be appended to `result`.
+     * * If either of the following conditions is true, then the literal string `//`will be appended to `result`:
+     *    * `urlObject.slashes` property is true;
+     *    * `urlObject.protocol` begins with `http`, `https`, `ftp`, `gopher`, or`file`;
+     * * If the value of the `urlObject.auth` property is truthy, and either`urlObject.host` or `urlObject.hostname` are not `undefined`, the value of`urlObject.auth` will be coerced into a string
+     * and appended to `result`followed by the literal string `@`.
+     * * If the `urlObject.host` property is `undefined` then:
+     *    * If the `urlObject.hostname` is a string, it is appended to `result`.
+     *    * Otherwise, if `urlObject.hostname` is not `undefined` and is not a string,
+     *    an `Error` is thrown.
+     *    * If the `urlObject.port` property value is truthy, and `urlObject.hostname`is not `undefined`:
+     *          * The literal string `:` is appended to `result`, and
+     *          * The value of `urlObject.port` is coerced to a string and appended to`result`.
+     * * Otherwise, if the `urlObject.host` property value is truthy, the value of`urlObject.host` is coerced to a string and appended to `result`.
+     * * If the `urlObject.pathname` property is a string that is not an empty string:
+     *    * If the `urlObject.pathname`_does not start_ with an ASCII forward slash
+     *    (`/`), then the literal string `'/'` is appended to `result`.
+     *    * The value of `urlObject.pathname` is appended to `result`.
+     * * Otherwise, if `urlObject.pathname` is not `undefined` and is not a string, an `Error` is thrown.
+     * * If the `urlObject.search` property is `undefined` and if the `urlObject.query`property is an `Object`, the literal string `?` is appended to `result`followed by the output of calling the
+     * `querystring` module's `stringify()`method passing the value of `urlObject.query`.
+     * * Otherwise, if `urlObject.search` is a string:
+     *    * If the value of `urlObject.search`_does not start_ with the ASCII question
+     *    mark (`?`) character, the literal string `?` is appended to `result`.
+     *    * The value of `urlObject.search` is appended to `result`.
+     * * Otherwise, if `urlObject.search` is not `undefined` and is not a string, an `Error` is thrown.
+     * * If the `urlObject.hash` property is a string:
+     *    * If the value of `urlObject.hash`_does not start_ with the ASCII hash (`#`)
+     *    character, the literal string `#` is appended to `result`.
+     *    * The value of `urlObject.hash` is appended to `result`.
+     * * Otherwise, if the `urlObject.hash` property is not `undefined` and is not a
+     * string, an `Error` is thrown.
+     * * `result` is returned.
+     * @since v0.1.25
+     * @deprecated Legacy: Use the WHATWG URL API instead.
+     * @param urlObject A URL object (as returned by `url.parse()` or constructed otherwise). If a string, it is converted to an object by passing it to `url.parse()`.
+     */
+    function format(urlObject: URL, options?: URLFormatOptions): string;
+    /**
+     * The `url.format()` method returns a formatted URL string derived from`urlObject`.
+     *
+     * ```js
+     * const url = require('url');
+     * url.format({
+     *   protocol: 'https',
+     *   hostname: 'example.com',
+     *   pathname: '/some/path',
+     *   query: {
+     *     page: 1,
+     *     format: 'json'
+     *   }
+     * });
+     *
+     * // => 'https://example.com/some/path?page=1&#x26;format=json'
+     * ```
+     *
+     * If `urlObject` is not an object or a string, `url.format()` will throw a `TypeError`.
+     *
+     * The formatting process operates as follows:
+     *
+     * * A new empty string `result` is created.
+     * * If `urlObject.protocol` is a string, it is appended as-is to `result`.
+     * * Otherwise, if `urlObject.protocol` is not `undefined` and is not a string, an `Error` is thrown.
+     * * For all string values of `urlObject.protocol` that _do not end_ with an ASCII
+     * colon (`:`) character, the literal string `:` will be appended to `result`.
+     * * If either of the following conditions is true, then the literal string `//`will be appended to `result`:
+     *    * `urlObject.slashes` property is true;
+     *    * `urlObject.protocol` begins with `http`, `https`, `ftp`, `gopher`, or`file`;
+     * * If the value of the `urlObject.auth` property is truthy, and either`urlObject.host` or `urlObject.hostname` are not `undefined`, the value of`urlObject.auth` will be coerced into a string
+     * and appended to `result`followed by the literal string `@`.
+     * * If the `urlObject.host` property is `undefined` then:
+     *    * If the `urlObject.hostname` is a string, it is appended to `result`.
+     *    * Otherwise, if `urlObject.hostname` is not `undefined` and is not a string,
+     *    an `Error` is thrown.
+     *    * If the `urlObject.port` property value is truthy, and `urlObject.hostname`is not `undefined`:
+     *          * The literal string `:` is appended to `result`, and
+     *          * The value of `urlObject.port` is coerced to a string and appended to`result`.
+     * * Otherwise, if the `urlObject.host` property value is truthy, the value of`urlObject.host` is coerced to a string and appended to `result`.
+     * * If the `urlObject.pathname` property is a string that is not an empty string:
+     *    * If the `urlObject.pathname`_does not start_ with an ASCII forward slash
+     *    (`/`), then the literal string `'/'` is appended to `result`.
+     *    * The value of `urlObject.pathname` is appended to `result`.
+     * * Otherwise, if `urlObject.pathname` is not `undefined` and is not a string, an `Error` is thrown.
+     * * If the `urlObject.search` property is `undefined` and if the `urlObject.query`property is an `Object`, the literal string `?` is appended to `result`followed by the output of calling the
+     * `querystring` module's `stringify()`method passing the value of `urlObject.query`.
+     * * Otherwise, if `urlObject.search` is a string:
+     *    * If the value of `urlObject.search`_does not start_ with the ASCII question
+     *    mark (`?`) character, the literal string `?` is appended to `result`.
+     *    * The value of `urlObject.search` is appended to `result`.
+     * * Otherwise, if `urlObject.search` is not `undefined` and is not a string, an `Error` is thrown.
+     * * If the `urlObject.hash` property is a string:
+     *    * If the value of `urlObject.hash`_does not start_ with the ASCII hash (`#`)
+     *    character, the literal string `#` is appended to `result`.
+     *    * The value of `urlObject.hash` is appended to `result`.
+     * * Otherwise, if the `urlObject.hash` property is not `undefined` and is not a
+     * string, an `Error` is thrown.
+     * * `result` is returned.
+     * @since v0.1.25
+     * @deprecated Legacy: Use the WHATWG URL API instead.
+     * @param urlObject A URL object (as returned by `url.parse()` or constructed otherwise). If a string, it is converted to an object by passing it to `url.parse()`.
+     */
+    function format(urlObject: UrlObject | string): string;
+    /**
+     * The `url.resolve()` method resolves a target URL relative to a base URL in a
+     * manner similar to that of a web browser resolving an anchor tag.
+     *
+     * ```js
+     * const url = require('url');
+     * url.resolve('/one/two/three', 'four');         // '/one/two/four'
+     * url.resolve('http://example.com/', '/one');    // 'http://example.com/one'
+     * url.resolve('http://example.com/one', '/two'); // 'http://example.com/two'
+     * ```
+     *
+     * To achieve the same result using the WHATWG URL API:
+     *
+     * ```js
+     * function resolve(from, to) {
+     *   const resolvedUrl = new URL(to, new URL(from, 'resolve://'));
+     *   if (resolvedUrl.protocol === 'resolve:') {
+     *     // `from` is a relative URL.
+     *     const { pathname, search, hash } = resolvedUrl;
+     *     return pathname + search + hash;
+     *   }
+     *   return resolvedUrl.toString();
+     * }
+     *
+     * resolve('/one/two/three', 'four');         // '/one/two/four'
+     * resolve('http://example.com/', '/one');    // 'http://example.com/one'
+     * resolve('http://example.com/one', '/two'); // 'http://example.com/two'
+     * ```
+     * @since v0.1.25
+     * @deprecated Legacy: Use the WHATWG URL API instead.
+     * @param from The base URL to use if `to` is a relative URL.
+     * @param to The target URL to resolve.
+     */
+    function resolve(from: string, to: string): string;
+    /**
+     * Returns the [Punycode](https://tools.ietf.org/html/rfc5891#section-4.4) ASCII serialization of the `domain`. If `domain` is an
+     * invalid domain, the empty string is returned.
+     *
+     * It performs the inverse operation to {@link domainToUnicode}.
+     *
+     * This feature is only available if the `node` executable was compiled with `ICU` enabled. If not, the domain names are passed through unchanged.
+     *
+     * ```js
+     * import url from 'url';
+     *
+     * console.log(url.domainToASCII('español.com'));
+     * // Prints xn--espaol-zwa.com
+     * console.log(url.domainToASCII('中文.com'));
+     * // Prints xn--fiq228c.com
+     * console.log(url.domainToASCII('xn--iñvalid.com'));
+     * // Prints an empty string
+     * ```
+     * @since v7.4.0, v6.13.0
+     */
+    function domainToASCII(domain: string): string;
+    /**
+     * Returns the Unicode serialization of the `domain`. If `domain` is an invalid
+     * domain, the empty string is returned.
+     *
+     * It performs the inverse operation to {@link domainToASCII}.
+     *
+     * This feature is only available if the `node` executable was compiled with `ICU` enabled. If not, the domain names are passed through unchanged.
+     *
+     * ```js
+     * import url from 'url';
+     *
+     * console.log(url.domainToUnicode('xn--espaol-zwa.com'));
+     * // Prints español.com
+     * console.log(url.domainToUnicode('xn--fiq228c.com'));
+     * // Prints 中文.com
+     * console.log(url.domainToUnicode('xn--iñvalid.com'));
+     * // Prints an empty string
+     * ```
+     * @since v7.4.0, v6.13.0
+     */
+    function domainToUnicode(domain: string): string;
+    /**
+     * This function ensures the correct decodings of percent-encoded characters as
+     * well as ensuring a cross-platform valid absolute path string.
+     *
+     * ```js
+     * import { fileURLToPath } from 'url';
+     *
+     * const __filename = fileURLToPath(import.meta.url);
+     *
+     * new URL('file:///C:/path/').pathname;      // Incorrect: /C:/path/
+     * fileURLToPath('file:///C:/path/');         // Correct:   C:\path\ (Windows)
+     *
+     * new URL('file://nas/foo.txt').pathname;    // Incorrect: /foo.txt
+     * fileURLToPath('file://nas/foo.txt');       // Correct:   \\nas\foo.txt (Windows)
+     *
+     * new URL('file:///你好.txt').pathname;      // Incorrect: /%E4%BD%A0%E5%A5%BD.txt
+     * fileURLToPath('file:///你好.txt');         // Correct:   /你好.txt (POSIX)
+     *
+     * new URL('file:///hello world').pathname;   // Incorrect: /hello%20world
+     * fileURLToPath('file:///hello world');      // Correct:   /hello world (POSIX)
+     * ```
+     * @since v10.12.0
+     * @param url The file URL string or URL object to convert to a path.
+     * @return The fully-resolved platform-specific Node.js file path.
+     */
+    function fileURLToPath(url: string | URL): string;
+    /**
+     * This function ensures that `path` is resolved absolutely, and that the URL
+     * control characters are correctly encoded when converting into a File URL.
+     *
+     * ```js
+     * import { pathToFileURL } from 'url';
+     *
+     * new URL('/foo#1', 'file:');           // Incorrect: file:///foo#1
+     * pathToFileURL('/foo#1');              // Correct:   file:///foo%231 (POSIX)
+     *
+     * new URL('/some/path%.c', 'file:');    // Incorrect: file:///some/path%.c
+     * pathToFileURL('/some/path%.c');       // Correct:   file:///some/path%25.c (POSIX)
+     * ```
+     * @since v10.12.0
+     * @param path The path to convert to a File URL.
+     * @return The file URL object.
+     */
+    function pathToFileURL(path: string): URL;
+    /**
+     * This utility function converts a URL object into an ordinary options object as
+     * expected by the `http.request()` and `https.request()` APIs.
+     *
+     * ```js
+     * import { urlToHttpOptions } from 'url';
+     * const myURL = new URL('https://a:b@測試?abc#foo');
+     *
+     * console.log(urlToHttpOptions(myURL));
+     * /*
+     * {
+     *   protocol: 'https:',
+     *   hostname: 'xn--g6w251d',
+     *   hash: '#foo',
+     *   search: '?abc',
+     *   pathname: '/',
+     *   path: '/?abc',
+     *   href: 'https://a:b@xn--g6w251d/?abc#foo',
+     *   auth: 'a:b'
+     * }
+     *
+     * ```
+     * @since v15.7.0, v14.18.0
+     * @param url The `WHATWG URL` object to convert to an options object.
+     * @return Options object
+     */
+    function urlToHttpOptions(url: URL): ClientRequestArgs;
+    interface URLFormatOptions {
+        auth?: boolean | undefined;
+        fragment?: boolean | undefined;
+        search?: boolean | undefined;
+        unicode?: boolean | undefined;
+    }
+    /**
+     * Browser-compatible `URL` class, implemented by following the WHATWG URL
+     * Standard. [Examples of parsed URLs](https://url.spec.whatwg.org/#example-url-parsing) may be found in the Standard itself.
+     * The `URL` class is also available on the global object.
+     *
+     * In accordance with browser conventions, all properties of `URL` objects
+     * are implemented as getters and setters on the class prototype, rather than as
+     * data properties on the object itself. Thus, unlike `legacy urlObject` s,
+     * using the `delete` keyword on any properties of `URL` objects (e.g. `delete myURL.protocol`, `delete myURL.pathname`, etc) has no effect but will still
+     * return `true`.
+     * @since v7.0.0, v6.13.0
+     */
+    class URL {
+        /**
+         * Creates a `'blob:nodedata:...'` URL string that represents the given `Blob` object and can be used to retrieve the `Blob` later.
+         *
+         * ```js
+         * const {
+         *   Blob,
+         *   resolveObjectURL,
+         * } = require('buffer');
+         *
+         * const blob = new Blob(['hello']);
+         * const id = URL.createObjectURL(blob);
+         *
+         * // later...
+         *
+         * const otherBlob = resolveObjectURL(id);
+         * console.log(otherBlob.size);
+         * ```
+         *
+         * The data stored by the registered `Blob` will be retained in memory until`URL.revokeObjectURL()` is called to remove it.
+         *
+         * `Blob` objects are registered within the current thread. If using Worker
+         * Threads, `Blob` objects registered within one Worker will not be available
+         * to other workers or the main thread.
+         * @since v16.7.0
+         * @experimental
+         */
+        static createObjectURL(blob: Blob): string;
+        /**
+         * Removes the stored `Blob` identified by the given ID. Attempting to revoke a
+         * ID that isn’t registered will silently fail.
+         * @since v16.7.0
+         * @experimental
+         * @param id A `'blob:nodedata:...` URL string returned by a prior call to `URL.createObjectURL()`.
+         */
+        static revokeObjectURL(objectUrl: string): void;
+        constructor(input: string, base?: string | URL);
+        /**
+         * Gets and sets the fragment portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/foo#bar');
+         * console.log(myURL.hash);
+         * // Prints #bar
+         *
+         * myURL.hash = 'baz';
+         * console.log(myURL.href);
+         * // Prints https://example.org/foo#baz
+         * ```
+         *
+         * Invalid URL characters included in the value assigned to the `hash` property
+         * are `percent-encoded`. The selection of which characters to
+         * percent-encode may vary somewhat from what the {@link parse} and {@link format} methods would produce.
+         */
+        hash: string;
+        /**
+         * Gets and sets the host portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org:81/foo');
+         * console.log(myURL.host);
+         * // Prints example.org:81
+         *
+         * myURL.host = 'example.com:82';
+         * console.log(myURL.href);
+         * // Prints https://example.com:82/foo
+         * ```
+         *
+         * Invalid host values assigned to the `host` property are ignored.
+         */
+        host: string;
+        /**
+         * Gets and sets the host name portion of the URL. The key difference between`url.host` and `url.hostname` is that `url.hostname` does _not_ include the
+         * port.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org:81/foo');
+         * console.log(myURL.hostname);
+         * // Prints example.org
+         *
+         * // Setting the hostname does not change the port
+         * myURL.hostname = 'example.com:82';
+         * console.log(myURL.href);
+         * // Prints https://example.com:81/foo
+         *
+         * // Use myURL.host to change the hostname and port
+         * myURL.host = 'example.org:82';
+         * console.log(myURL.href);
+         * // Prints https://example.org:82/foo
+         * ```
+         *
+         * Invalid host name values assigned to the `hostname` property are ignored.
+         */
+        hostname: string;
+        /**
+         * Gets and sets the serialized URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/foo');
+         * console.log(myURL.href);
+         * // Prints https://example.org/foo
+         *
+         * myURL.href = 'https://example.com/bar';
+         * console.log(myURL.href);
+         * // Prints https://example.com/bar
+         * ```
+         *
+         * Getting the value of the `href` property is equivalent to calling {@link toString}.
+         *
+         * Setting the value of this property to a new value is equivalent to creating a
+         * new `URL` object using `new URL(value)`. Each of the `URL`object's properties will be modified.
+         *
+         * If the value assigned to the `href` property is not a valid URL, a `TypeError`will be thrown.
+         */
+        href: string;
+        /**
+         * Gets the read-only serialization of the URL's origin.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/foo/bar?baz');
+         * console.log(myURL.origin);
+         * // Prints https://example.org
+         * ```
+         *
+         * ```js
+         * const idnURL = new URL('https://測試');
+         * console.log(idnURL.origin);
+         * // Prints https://xn--g6w251d
+         *
+         * console.log(idnURL.hostname);
+         * // Prints xn--g6w251d
+         * ```
+         */
+        readonly origin: string;
+        /**
+         * Gets and sets the password portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://abc:xyz@example.com');
+         * console.log(myURL.password);
+         * // Prints xyz
+         *
+         * myURL.password = '123';
+         * console.log(myURL.href);
+         * // Prints https://abc:123@example.com
+         * ```
+         *
+         * Invalid URL characters included in the value assigned to the `password` property
+         * are `percent-encoded`. The selection of which characters to
+         * percent-encode may vary somewhat from what the {@link parse} and {@link format} methods would produce.
+         */
+        password: string;
+        /**
+         * Gets and sets the path portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/abc/xyz?123');
+         * console.log(myURL.pathname);
+         * // Prints /abc/xyz
+         *
+         * myURL.pathname = '/abcdef';
+         * console.log(myURL.href);
+         * // Prints https://example.org/abcdef?123
+         * ```
+         *
+         * Invalid URL characters included in the value assigned to the `pathname`property are `percent-encoded`. The selection of which characters
+         * to percent-encode may vary somewhat from what the {@link parse} and {@link format} methods would produce.
+         */
+        pathname: string;
+        /**
+         * Gets and sets the port portion of the URL.
+         *
+         * The port value may be a number or a string containing a number in the range`0` to `65535` (inclusive). Setting the value to the default port of the`URL` objects given `protocol` will
+         * result in the `port` value becoming
+         * the empty string (`''`).
+         *
+         * The port value can be an empty string in which case the port depends on
+         * the protocol/scheme:
+         *
+         * <omitted>
+         *
+         * Upon assigning a value to the port, the value will first be converted to a
+         * string using `.toString()`.
+         *
+         * If that string is invalid but it begins with a number, the leading number is
+         * assigned to `port`.
+         * If the number lies outside the range denoted above, it is ignored.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org:8888');
+         * console.log(myURL.port);
+         * // Prints 8888
+         *
+         * // Default ports are automatically transformed to the empty string
+         * // (HTTPS protocol's default port is 443)
+         * myURL.port = '443';
+         * console.log(myURL.port);
+         * // Prints the empty string
+         * console.log(myURL.href);
+         * // Prints https://example.org/
+         *
+         * myURL.port = 1234;
+         * console.log(myURL.port);
+         * // Prints 1234
+         * console.log(myURL.href);
+         * // Prints https://example.org:1234/
+         *
+         * // Completely invalid port strings are ignored
+         * myURL.port = 'abcd';
+         * console.log(myURL.port);
+         * // Prints 1234
+         *
+         * // Leading numbers are treated as a port number
+         * myURL.port = '5678abcd';
+         * console.log(myURL.port);
+         * // Prints 5678
+         *
+         * // Non-integers are truncated
+         * myURL.port = 1234.5678;
+         * console.log(myURL.port);
+         * // Prints 1234
+         *
+         * // Out-of-range numbers which are not represented in scientific notation
+         * // will be ignored.
+         * myURL.port = 1e10; // 10000000000, will be range-checked as described below
+         * console.log(myURL.port);
+         * // Prints 1234
+         * ```
+         *
+         * Numbers which contain a decimal point,
+         * such as floating-point numbers or numbers in scientific notation,
+         * are not an exception to this rule.
+         * Leading numbers up to the decimal point will be set as the URL's port,
+         * assuming they are valid:
+         *
+         * ```js
+         * myURL.port = 4.567e21;
+         * console.log(myURL.port);
+         * // Prints 4 (because it is the leading number in the string '4.567e21')
+         * ```
+         */
+        port: string;
+        /**
+         * Gets and sets the protocol portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org');
+         * console.log(myURL.protocol);
+         * // Prints https:
+         *
+         * myURL.protocol = 'ftp';
+         * console.log(myURL.href);
+         * // Prints ftp://example.org/
+         * ```
+         *
+         * Invalid URL protocol values assigned to the `protocol` property are ignored.
+         */
+        protocol: string;
+        /**
+         * Gets and sets the serialized query portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/abc?123');
+         * console.log(myURL.search);
+         * // Prints ?123
+         *
+         * myURL.search = 'abc=xyz';
+         * console.log(myURL.href);
+         * // Prints https://example.org/abc?abc=xyz
+         * ```
+         *
+         * Any invalid URL characters appearing in the value assigned the `search`property will be `percent-encoded`. The selection of which
+         * characters to percent-encode may vary somewhat from what the {@link parse} and {@link format} methods would produce.
+         */
+        search: string;
+        /**
+         * Gets the `URLSearchParams` object representing the query parameters of the
+         * URL. This property is read-only but the `URLSearchParams` object it provides
+         * can be used to mutate the URL instance; to replace the entirety of query
+         * parameters of the URL, use the {@link search} setter. See `URLSearchParams` documentation for details.
+         *
+         * Use care when using `.searchParams` to modify the `URL` because,
+         * per the WHATWG specification, the `URLSearchParams` object uses
+         * different rules to determine which characters to percent-encode. For
+         * instance, the `URL` object will not percent encode the ASCII tilde (`~`)
+         * character, while `URLSearchParams` will always encode it:
+         *
+         * ```js
+         * const myUrl = new URL('https://example.org/abc?foo=~bar');
+         *
+         * console.log(myUrl.search);  // prints ?foo=~bar
+         *
+         * // Modify the URL via searchParams...
+         * myUrl.searchParams.sort();
+         *
+         * console.log(myUrl.search);  // prints ?foo=%7Ebar
+         * ```
+         */
+        readonly searchParams: URLSearchParams;
+        /**
+         * Gets and sets the username portion of the URL.
+         *
+         * ```js
+         * const myURL = new URL('https://abc:xyz@example.com');
+         * console.log(myURL.username);
+         * // Prints abc
+         *
+         * myURL.username = '123';
+         * console.log(myURL.href);
+         * // Prints https://123:xyz@example.com/
+         * ```
+         *
+         * Any invalid URL characters appearing in the value assigned the `username`property will be `percent-encoded`. The selection of which
+         * characters to percent-encode may vary somewhat from what the {@link parse} and {@link format} methods would produce.
+         */
+        username: string;
+        /**
+         * The `toString()` method on the `URL` object returns the serialized URL. The
+         * value returned is equivalent to that of {@link href} and {@link toJSON}.
+         */
+        toString(): string;
+        /**
+         * The `toJSON()` method on the `URL` object returns the serialized URL. The
+         * value returned is equivalent to that of {@link href} and {@link toString}.
+         *
+         * This method is automatically called when an `URL` object is serialized
+         * with [`JSON.stringify()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/JSON/stringify).
+         *
+         * ```js
+         * const myURLs = [
+         *   new URL('https://www.example.com'),
+         *   new URL('https://test.example.org'),
+         * ];
+         * console.log(JSON.stringify(myURLs));
+         * // Prints ["https://www.example.com/","https://test.example.org/"]
+         * ```
+         */
+        toJSON(): string;
+    }
+    /**
+     * The `URLSearchParams` API provides read and write access to the query of a`URL`. The `URLSearchParams` class can also be used standalone with one of the
+     * four following constructors.
+     * The `URLSearchParams` class is also available on the global object.
+     *
+     * The WHATWG `URLSearchParams` interface and the `querystring` module have
+     * similar purpose, but the purpose of the `querystring` module is more
+     * general, as it allows the customization of delimiter characters (`&#x26;` and `=`).
+     * On the other hand, this API is designed purely for URL query strings.
+     *
+     * ```js
+     * const myURL = new URL('https://example.org/?abc=123');
+     * console.log(myURL.searchParams.get('abc'));
+     * // Prints 123
+     *
+     * myURL.searchParams.append('abc', 'xyz');
+     * console.log(myURL.href);
+     * // Prints https://example.org/?abc=123&#x26;abc=xyz
+     *
+     * myURL.searchParams.delete('abc');
+     * myURL.searchParams.set('a', 'b');
+     * console.log(myURL.href);
+     * // Prints https://example.org/?a=b
+     *
+     * const newSearchParams = new URLSearchParams(myURL.searchParams);
+     * // The above is equivalent to
+     * // const newSearchParams = new URLSearchParams(myURL.search);
+     *
+     * newSearchParams.append('a', 'c');
+     * console.log(myURL.href);
+     * // Prints https://example.org/?a=b
+     * console.log(newSearchParams.toString());
+     * // Prints a=b&#x26;a=c
+     *
+     * // newSearchParams.toString() is implicitly called
+     * myURL.search = newSearchParams;
+     * console.log(myURL.href);
+     * // Prints https://example.org/?a=b&#x26;a=c
+     * newSearchParams.delete('a');
+     * console.log(myURL.href);
+     * // Prints https://example.org/?a=b&#x26;a=c
+     * ```
+     * @since v7.5.0, v6.13.0
+     */
+    class URLSearchParams implements Iterable<[string, string]> {
+        constructor(init?: URLSearchParams | string | Record<string, string | ReadonlyArray<string>> | Iterable<[string, string]> | ReadonlyArray<[string, string]>);
+        /**
+         * Append a new name-value pair to the query string.
+         */
+        append(name: string, value: string): void;
+        /**
+         * Remove all name-value pairs whose name is `name`.
+         */
+        delete(name: string): void;
+        /**
+         * Returns an ES6 `Iterator` over each of the name-value pairs in the query.
+         * Each item of the iterator is a JavaScript `Array`. The first item of the `Array`is the `name`, the second item of the `Array` is the `value`.
+         *
+         * Alias for `urlSearchParams[@@iterator]()`.
+         */
+        entries(): IterableIterator<[string, string]>;
+        /**
+         * Iterates over each name-value pair in the query and invokes the given function.
+         *
+         * ```js
+         * const myURL = new URL('https://example.org/?a=b&#x26;c=d');
+         * myURL.searchParams.forEach((value, name, searchParams) => {
+         *   console.log(name, value, myURL.searchParams === searchParams);
+         * });
+         * // Prints:
+         * //   a b true
+         * //   c d true
+         * ```
+         * @param fn Invoked for each name-value pair in the query
+         * @param thisArg To be used as `this` value for when `fn` is called
+         */
+        forEach<TThis = this>(callback: (this: TThis, value: string, name: string, searchParams: URLSearchParams) => void, thisArg?: TThis): void;
+        /**
+         * Returns the value of the first name-value pair whose name is `name`. If there
+         * are no such pairs, `null` is returned.
+         * @return or `null` if there is no name-value pair with the given `name`.
+         */
+        get(name: string): string | null;
+        /**
+         * Returns the values of all name-value pairs whose name is `name`. If there are
+         * no such pairs, an empty array is returned.
+         */
+        getAll(name: string): string[];
+        /**
+         * Returns `true` if there is at least one name-value pair whose name is `name`.
+         */
+        has(name: string): boolean;
+        /**
+         * Returns an ES6 `Iterator` over the names of each name-value pair.
+         *
+         * ```js
+         * const params = new URLSearchParams('foo=bar&#x26;foo=baz');
+         * for (const name of params.keys()) {
+         *   console.log(name);
+         * }
+         * // Prints:
+         * //   foo
+         * //   foo
+         * ```
+         */
+        keys(): IterableIterator<string>;
+        /**
+         * Sets the value in the `URLSearchParams` object associated with `name` to`value`. If there are any pre-existing name-value pairs whose names are `name`,
+         * set the first such pair's value to `value` and remove all others. If not,
+         * append the name-value pair to the query string.
+         *
+         * ```js
+         * const params = new URLSearchParams();
+         * params.append('foo', 'bar');
+         * params.append('foo', 'baz');
+         * params.append('abc', 'def');
+         * console.log(params.toString());
+         * // Prints foo=bar&#x26;foo=baz&#x26;abc=def
+         *
+         * params.set('foo', 'def');
+         * params.set('xyz', 'opq');
+         * console.log(params.toString());
+         * // Prints foo=def&#x26;abc=def&#x26;xyz=opq
+         * ```
+         */
+        set(name: string, value: string): void;
+        /**
+         * Sort all existing name-value pairs in-place by their names. Sorting is done
+         * with a [stable sorting algorithm](https://en.wikipedia.org/wiki/Sorting_algorithm#Stability), so relative order between name-value pairs
+         * with the same name is preserved.
+         *
+         * This method can be used, in particular, to increase cache hits.
+         *
+         * ```js
+         * const params = new URLSearchParams('query[]=abc&#x26;type=search&#x26;query[]=123');
+         * params.sort();
+         * console.log(params.toString());
+         * // Prints query%5B%5D=abc&#x26;query%5B%5D=123&#x26;type=search
+         * ```
+         * @since v7.7.0, v6.13.0
+         */
+        sort(): void;
+        /**
+         * Returns the search parameters serialized as a string, with characters
+         * percent-encoded where necessary.
+         */
+        toString(): string;
+        /**
+         * Returns an ES6 `Iterator` over the values of each name-value pair.
+         */
+        values(): IterableIterator<string>;
+        [Symbol.iterator](): IterableIterator<[string, string]>;
+    }
+    import { URL as _URL, URLSearchParams as _URLSearchParams } from 'url';
+    global {
+        interface URLSearchParams extends _URLSearchParams {}
+        interface URL extends _URL {}
+        interface Global {
+            URL: typeof _URL;
+            URLSearchParams: typeof _URLSearchParams;
+        }
+        /**
+         * `URL` class is a global reference for `require('url').URL`
+         * https://nodejs.org/api/url.html#the-whatwg-url-api
+         * @since v10.0.0
+         */
+        var URL: typeof globalThis extends {
+            onmessage: any;
+            URL: infer URL;
+        }
+            ? URL
+            : typeof _URL;
+        /**
+         * `URLSearchParams` class is a global reference for `require('url').URLSearchParams`
+         * https://nodejs.org/api/url.html#class-urlsearchparams
+         * @since v10.0.0
+         */
+        var URLSearchParams: typeof globalThis extends {
+            onmessage: any;
+            URLSearchParams: infer URLSearchParams;
+        }
+            ? URLSearchParams
+            : typeof _URLSearchParams;
+    }
+}
+declare module 'node:url' {
+    export * from 'url';
+}
diff --git a/igv_component/node_modules/@types/node/util.d.ts b/igv_component/node_modules/@types/node/util.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a081325680a09a4ff228ba6d6be805528c0e7693
--- /dev/null
+++ b/igv_component/node_modules/@types/node/util.d.ts
@@ -0,0 +1,1792 @@
+/**
+ * The `util` module supports the needs of Node.js internal APIs. Many of the
+ * utilities are useful for application and module developers as well. To access
+ * it:
+ *
+ * ```js
+ * const util = require('util');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/util.js)
+ */
+declare module 'util' {
+    import * as types from 'node:util/types';
+    export interface InspectOptions {
+        /**
+         * If set to `true`, getters are going to be
+         * inspected as well. If set to `'get'` only getters without setter are going
+         * to be inspected. If set to `'set'` only getters having a corresponding
+         * setter are going to be inspected. This might cause side effects depending on
+         * the getter function.
+         * @default `false`
+         */
+        getters?: 'get' | 'set' | boolean | undefined;
+        showHidden?: boolean | undefined;
+        /**
+         * @default 2
+         */
+        depth?: number | null | undefined;
+        colors?: boolean | undefined;
+        customInspect?: boolean | undefined;
+        showProxy?: boolean | undefined;
+        maxArrayLength?: number | null | undefined;
+        /**
+         * Specifies the maximum number of characters to
+         * include when formatting. Set to `null` or `Infinity` to show all elements.
+         * Set to `0` or negative to show no characters.
+         * @default 10000
+         */
+        maxStringLength?: number | null | undefined;
+        breakLength?: number | undefined;
+        /**
+         * Setting this to `false` causes each object key
+         * to be displayed on a new line. It will also add new lines to text that is
+         * longer than `breakLength`. If set to a number, the most `n` inner elements
+         * are united on a single line as long as all properties fit into
+         * `breakLength`. Short array elements are also grouped together. Note that no
+         * text will be reduced below 16 characters, no matter the `breakLength` size.
+         * For more information, see the example below.
+         * @default `true`
+         */
+        compact?: boolean | number | undefined;
+        sorted?: boolean | ((a: string, b: string) => number) | undefined;
+    }
+    export type Style = 'special' | 'number' | 'bigint' | 'boolean' | 'undefined' | 'null' | 'string' | 'symbol' | 'date' | 'regexp' | 'module';
+    export type CustomInspectFunction = (depth: number, options: InspectOptionsStylized) => string;
+    export interface InspectOptionsStylized extends InspectOptions {
+        stylize(text: string, styleType: Style): string;
+    }
+    /**
+     * The `util.format()` method returns a formatted string using the first argument
+     * as a `printf`\-like format string which can contain zero or more format
+     * specifiers. Each specifier is replaced with the converted value from the
+     * corresponding argument. Supported specifiers are:
+     *
+     * If a specifier does not have a corresponding argument, it is not replaced:
+     *
+     * ```js
+     * util.format('%s:%s', 'foo');
+     * // Returns: 'foo:%s'
+     * ```
+     *
+     * Values that are not part of the format string are formatted using`util.inspect()` if their type is not `string`.
+     *
+     * If there are more arguments passed to the `util.format()` method than the
+     * number of specifiers, the extra arguments are concatenated to the returned
+     * string, separated by spaces:
+     *
+     * ```js
+     * util.format('%s:%s', 'foo', 'bar', 'baz');
+     * // Returns: 'foo:bar baz'
+     * ```
+     *
+     * If the first argument does not contain a valid format specifier, `util.format()`returns a string that is the concatenation of all arguments separated by spaces:
+     *
+     * ```js
+     * util.format(1, 2, 3);
+     * // Returns: '1 2 3'
+     * ```
+     *
+     * If only one argument is passed to `util.format()`, it is returned as it is
+     * without any formatting:
+     *
+     * ```js
+     * util.format('%% %s');
+     * // Returns: '%% %s'
+     * ```
+     *
+     * `util.format()` is a synchronous method that is intended as a debugging tool.
+     * Some input values can have a significant performance overhead that can block the
+     * event loop. Use this function with care and never in a hot code path.
+     * @since v0.5.3
+     * @param format A `printf`-like format string.
+     */
+    export function format(format?: any, ...param: any[]): string;
+    /**
+     * This function is identical to {@link format}, except in that it takes
+     * an `inspectOptions` argument which specifies options that are passed along to {@link inspect}.
+     *
+     * ```js
+     * util.formatWithOptions({ colors: true }, 'See object %O', { foo: 42 });
+     * // Returns 'See object { foo: 42 }', where `42` is colored as a number
+     * // when printed to a terminal.
+     * ```
+     * @since v10.0.0
+     */
+    export function formatWithOptions(inspectOptions: InspectOptions, format?: any, ...param: any[]): string;
+    /**
+     * Returns the string name for a numeric error code that comes from a Node.js API.
+     * The mapping between error codes and error names is platform-dependent.
+     * See `Common System Errors` for the names of common errors.
+     *
+     * ```js
+     * fs.access('file/that/does/not/exist', (err) => {
+     *   const name = util.getSystemErrorName(err.errno);
+     *   console.error(name);  // ENOENT
+     * });
+     * ```
+     * @since v9.7.0
+     */
+    export function getSystemErrorName(err: number): string;
+    /**
+     * Returns a Map of all system error codes available from the Node.js API.
+     * The mapping between error codes and error names is platform-dependent.
+     * See `Common System Errors` for the names of common errors.
+     *
+     * ```js
+     * fs.access('file/that/does/not/exist', (err) => {
+     *   const errorMap = util.getSystemErrorMap();
+     *   const name = errorMap.get(err.errno);
+     *   console.error(name);  // ENOENT
+     * });
+     * ```
+     * @since v16.0.0, v14.17.0
+     */
+    export function getSystemErrorMap(): Map<number, [string, string]>;
+    /**
+     * The `util.log()` method prints the given `string` to `stdout` with an included
+     * timestamp.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.log('Timestamped message.');
+     * ```
+     * @since v0.3.0
+     * @deprecated Since v6.0.0 - Use a third party module instead.
+     */
+    export function log(string: string): void;
+    /**
+     * Returns the `string` after replacing any surrogate code points
+     * (or equivalently, any unpaired surrogate code units) with the
+     * Unicode "replacement character" U+FFFD.
+     * @since v16.8.0, v14.18.0
+     */
+    export function toUSVString(string: string): string;
+    /**
+     * The `util.inspect()` method returns a string representation of `object` that is
+     * intended for debugging. The output of `util.inspect` may change at any time
+     * and should not be depended upon programmatically. Additional `options` may be
+     * passed that alter the result.`util.inspect()` will use the constructor's name and/or `@@toStringTag` to make
+     * an identifiable tag for an inspected value.
+     *
+     * ```js
+     * class Foo {
+     *   get [Symbol.toStringTag]() {
+     *     return 'bar';
+     *   }
+     * }
+     *
+     * class Bar {}
+     *
+     * const baz = Object.create(null, { [Symbol.toStringTag]: { value: 'foo' } });
+     *
+     * util.inspect(new Foo()); // 'Foo [bar] {}'
+     * util.inspect(new Bar()); // 'Bar {}'
+     * util.inspect(baz);       // '[foo] {}'
+     * ```
+     *
+     * Circular references point to their anchor by using a reference index:
+     *
+     * ```js
+     * const { inspect } = require('util');
+     *
+     * const obj = {};
+     * obj.a = [obj];
+     * obj.b = {};
+     * obj.b.inner = obj.b;
+     * obj.b.obj = obj;
+     *
+     * console.log(inspect(obj));
+     * // <ref *1> {
+     * //   a: [ [Circular *1] ],
+     * //   b: <ref *2> { inner: [Circular *2], obj: [Circular *1] }
+     * // }
+     * ```
+     *
+     * The following example inspects all properties of the `util` object:
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * console.log(util.inspect(util, { showHidden: true, depth: null }));
+     * ```
+     *
+     * The following example highlights the effect of the `compact` option:
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * const o = {
+     *   a: [1, 2, [[
+     *     'Lorem ipsum dolor sit amet,\nconsectetur adipiscing elit, sed do ' +
+     *       'eiusmod \ntempor incididunt ut labore et dolore magna aliqua.',
+     *     'test',
+     *     'foo']], 4],
+     *   b: new Map([['za', 1], ['zb', 'test']])
+     * };
+     * console.log(util.inspect(o, { compact: true, depth: 5, breakLength: 80 }));
+     *
+     * // { a:
+     * //   [ 1,
+     * //     2,
+     * //     [ [ 'Lorem ipsum dolor sit amet,\nconsectetur [...]', // A long line
+     * //           'test',
+     * //           'foo' ] ],
+     * //     4 ],
+     * //   b: Map(2) { 'za' => 1, 'zb' => 'test' } }
+     *
+     * // Setting `compact` to false or an integer creates more reader friendly output.
+     * console.log(util.inspect(o, { compact: false, depth: 5, breakLength: 80 }));
+     *
+     * // {
+     * //   a: [
+     * //     1,
+     * //     2,
+     * //     [
+     * //       [
+     * //         'Lorem ipsum dolor sit amet,\n' +
+     * //           'consectetur adipiscing elit, sed do eiusmod \n' +
+     * //           'tempor incididunt ut labore et dolore magna aliqua.',
+     * //         'test',
+     * //         'foo'
+     * //       ]
+     * //     ],
+     * //     4
+     * //   ],
+     * //   b: Map(2) {
+     * //     'za' => 1,
+     * //     'zb' => 'test'
+     * //   }
+     * // }
+     *
+     * // Setting `breakLength` to e.g. 150 will print the "Lorem ipsum" text in a
+     * // single line.
+     * ```
+     *
+     * The `showHidden` option allows [`WeakMap`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap) and
+     * [`WeakSet`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet) entries to be
+     * inspected. If there are more entries than `maxArrayLength`, there is no
+     * guarantee which entries are displayed. That means retrieving the same [`WeakSet`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet) entries twice may
+     * result in different output. Furthermore, entries
+     * with no remaining strong references may be garbage collected at any time.
+     *
+     * ```js
+     * const { inspect } = require('util');
+     *
+     * const obj = { a: 1 };
+     * const obj2 = { b: 2 };
+     * const weakSet = new WeakSet([obj, obj2]);
+     *
+     * console.log(inspect(weakSet, { showHidden: true }));
+     * // WeakSet { { a: 1 }, { b: 2 } }
+     * ```
+     *
+     * The `sorted` option ensures that an object's property insertion order does not
+     * impact the result of `util.inspect()`.
+     *
+     * ```js
+     * const { inspect } = require('util');
+     * const assert = require('assert');
+     *
+     * const o1 = {
+     *   b: [2, 3, 1],
+     *   a: '`a` comes before `b`',
+     *   c: new Set([2, 3, 1])
+     * };
+     * console.log(inspect(o1, { sorted: true }));
+     * // { a: '`a` comes before `b`', b: [ 2, 3, 1 ], c: Set(3) { 1, 2, 3 } }
+     * console.log(inspect(o1, { sorted: (a, b) => b.localeCompare(a) }));
+     * // { c: Set(3) { 3, 2, 1 }, b: [ 2, 3, 1 ], a: '`a` comes before `b`' }
+     *
+     * const o2 = {
+     *   c: new Set([2, 1, 3]),
+     *   a: '`a` comes before `b`',
+     *   b: [2, 3, 1]
+     * };
+     * assert.strict.equal(
+     *   inspect(o1, { sorted: true }),
+     *   inspect(o2, { sorted: true })
+     * );
+     * ```
+     *
+     * The `numericSeparator` option adds an underscore every three digits to all
+     * numbers.
+     *
+     * ```js
+     * const { inspect } = require('util');
+     *
+     * const thousand = 1_000;
+     * const million = 1_000_000;
+     * const bigNumber = 123_456_789n;
+     * const bigDecimal = 1_234.123_45;
+     *
+     * console.log(thousand, million, bigNumber, bigDecimal);
+     * // 1_000 1_000_000 123_456_789n 1_234.123_45
+     * ```
+     *
+     * `util.inspect()` is a synchronous method intended for debugging. Its maximum
+     * output length is approximately 128 MB. Inputs that result in longer output will
+     * be truncated.
+     * @since v0.3.0
+     * @param object Any JavaScript primitive or `Object`.
+     * @return The representation of `object`.
+     */
+    export function inspect(object: any, showHidden?: boolean, depth?: number | null, color?: boolean): string;
+    export function inspect(object: any, options?: InspectOptions): string;
+    export namespace inspect {
+        let colors: NodeJS.Dict<[number, number]>;
+        let styles: {
+            [K in Style]: string;
+        };
+        let defaultOptions: InspectOptions;
+        /**
+         * Allows changing inspect settings from the repl.
+         */
+        let replDefaults: InspectOptions;
+        /**
+         * That can be used to declare custom inspect functions.
+         */
+        const custom: unique symbol;
+    }
+    /**
+     * Alias for [`Array.isArray()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/isArray).
+     *
+     * Returns `true` if the given `object` is an `Array`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isArray([]);
+     * // Returns: true
+     * util.isArray(new Array());
+     * // Returns: true
+     * util.isArray({});
+     * // Returns: false
+     * ```
+     * @since v0.6.0
+     * @deprecated Since v4.0.0 - Use `isArray` instead.
+     */
+    export function isArray(object: unknown): object is unknown[];
+    /**
+     * Returns `true` if the given `object` is a `RegExp`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isRegExp(/some regexp/);
+     * // Returns: true
+     * util.isRegExp(new RegExp('another regexp'));
+     * // Returns: true
+     * util.isRegExp({});
+     * // Returns: false
+     * ```
+     * @since v0.6.0
+     * @deprecated Since v4.0.0 - Deprecated
+     */
+    export function isRegExp(object: unknown): object is RegExp;
+    /**
+     * Returns `true` if the given `object` is a `Date`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isDate(new Date());
+     * // Returns: true
+     * util.isDate(Date());
+     * // false (without 'new' returns a String)
+     * util.isDate({});
+     * // Returns: false
+     * ```
+     * @since v0.6.0
+     * @deprecated Since v4.0.0 - Use {@link types.isDate} instead.
+     */
+    export function isDate(object: unknown): object is Date;
+    /**
+     * Returns `true` if the given `object` is an `Error`. Otherwise, returns`false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isError(new Error());
+     * // Returns: true
+     * util.isError(new TypeError());
+     * // Returns: true
+     * util.isError({ name: 'Error', message: 'an error occurred' });
+     * // Returns: false
+     * ```
+     *
+     * This method relies on `Object.prototype.toString()` behavior. It is
+     * possible to obtain an incorrect result when the `object` argument manipulates`@@toStringTag`.
+     *
+     * ```js
+     * const util = require('util');
+     * const obj = { name: 'Error', message: 'an error occurred' };
+     *
+     * util.isError(obj);
+     * // Returns: false
+     * obj[Symbol.toStringTag] = 'Error';
+     * util.isError(obj);
+     * // Returns: true
+     * ```
+     * @since v0.6.0
+     * @deprecated Since v4.0.0 - Use {@link types.isNativeError} instead.
+     */
+    export function isError(object: unknown): object is Error;
+    /**
+     * Usage of `util.inherits()` is discouraged. Please use the ES6 `class` and`extends` keywords to get language level inheritance support. Also note
+     * that the two styles are [semantically incompatible](https://github.com/nodejs/node/issues/4179).
+     *
+     * Inherit the prototype methods from one [constructor](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/constructor) into another. The
+     * prototype of `constructor` will be set to a new object created from`superConstructor`.
+     *
+     * This mainly adds some input validation on top of`Object.setPrototypeOf(constructor.prototype, superConstructor.prototype)`.
+     * As an additional convenience, `superConstructor` will be accessible
+     * through the `constructor.super_` property.
+     *
+     * ```js
+     * const util = require('util');
+     * const EventEmitter = require('events');
+     *
+     * function MyStream() {
+     *   EventEmitter.call(this);
+     * }
+     *
+     * util.inherits(MyStream, EventEmitter);
+     *
+     * MyStream.prototype.write = function(data) {
+     *   this.emit('data', data);
+     * };
+     *
+     * const stream = new MyStream();
+     *
+     * console.log(stream instanceof EventEmitter); // true
+     * console.log(MyStream.super_ === EventEmitter); // true
+     *
+     * stream.on('data', (data) => {
+     *   console.log(`Received data: "${data}"`);
+     * });
+     * stream.write('It works!'); // Received data: "It works!"
+     * ```
+     *
+     * ES6 example using `class` and `extends`:
+     *
+     * ```js
+     * const EventEmitter = require('events');
+     *
+     * class MyStream extends EventEmitter {
+     *   write(data) {
+     *     this.emit('data', data);
+     *   }
+     * }
+     *
+     * const stream = new MyStream();
+     *
+     * stream.on('data', (data) => {
+     *   console.log(`Received data: "${data}"`);
+     * });
+     * stream.write('With ES6');
+     * ```
+     * @since v0.3.0
+     * @deprecated Legacy: Use ES2015 class syntax and `extends` keyword instead.
+     */
+    export function inherits(constructor: unknown, superConstructor: unknown): void;
+    export type DebugLoggerFunction = (msg: string, ...param: unknown[]) => void;
+    export interface DebugLogger extends DebugLoggerFunction {
+        enabled: boolean;
+    }
+    /**
+     * The `util.debuglog()` method is used to create a function that conditionally
+     * writes debug messages to `stderr` based on the existence of the `NODE_DEBUG`environment variable. If the `section` name appears within the value of that
+     * environment variable, then the returned function operates similar to `console.error()`. If not, then the returned function is a no-op.
+     *
+     * ```js
+     * const util = require('util');
+     * const debuglog = util.debuglog('foo');
+     *
+     * debuglog('hello from foo [%d]', 123);
+     * ```
+     *
+     * If this program is run with `NODE_DEBUG=foo` in the environment, then
+     * it will output something like:
+     *
+     * ```console
+     * FOO 3245: hello from foo [123]
+     * ```
+     *
+     * where `3245` is the process id. If it is not run with that
+     * environment variable set, then it will not print anything.
+     *
+     * The `section` supports wildcard also:
+     *
+     * ```js
+     * const util = require('util');
+     * const debuglog = util.debuglog('foo-bar');
+     *
+     * debuglog('hi there, it\'s foo-bar [%d]', 2333);
+     * ```
+     *
+     * if it is run with `NODE_DEBUG=foo*` in the environment, then it will output
+     * something like:
+     *
+     * ```console
+     * FOO-BAR 3257: hi there, it's foo-bar [2333]
+     * ```
+     *
+     * Multiple comma-separated `section` names may be specified in the `NODE_DEBUG`environment variable: `NODE_DEBUG=fs,net,tls`.
+     *
+     * The optional `callback` argument can be used to replace the logging function
+     * with a different function that doesn't have any initialization or
+     * unnecessary wrapping.
+     *
+     * ```js
+     * const util = require('util');
+     * let debuglog = util.debuglog('internals', (debug) => {
+     *   // Replace with a logging function that optimizes out
+     *   // testing if the section is enabled
+     *   debuglog = debug;
+     * });
+     * ```
+     * @since v0.11.3
+     * @param section A string identifying the portion of the application for which the `debuglog` function is being created.
+     * @param callback A callback invoked the first time the logging function is called with a function argument that is a more optimized logging function.
+     * @return The logging function
+     */
+    export function debuglog(section: string, callback?: (fn: DebugLoggerFunction) => void): DebugLogger;
+    export const debug: typeof debuglog;
+    /**
+     * Returns `true` if the given `object` is a `Boolean`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isBoolean(1);
+     * // Returns: false
+     * util.isBoolean(0);
+     * // Returns: false
+     * util.isBoolean(false);
+     * // Returns: true
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `typeof value === 'boolean'` instead.
+     */
+    export function isBoolean(object: unknown): object is boolean;
+    /**
+     * Returns `true` if the given `object` is a `Buffer`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isBuffer({ length: 0 });
+     * // Returns: false
+     * util.isBuffer([]);
+     * // Returns: false
+     * util.isBuffer(Buffer.from('hello world'));
+     * // Returns: true
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `isBuffer` instead.
+     */
+    export function isBuffer(object: unknown): object is Buffer;
+    /**
+     * Returns `true` if the given `object` is a `Function`. Otherwise, returns`false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * function Foo() {}
+     * const Bar = () => {};
+     *
+     * util.isFunction({});
+     * // Returns: false
+     * util.isFunction(Foo);
+     * // Returns: true
+     * util.isFunction(Bar);
+     * // Returns: true
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `typeof value === 'function'` instead.
+     */
+    export function isFunction(object: unknown): boolean;
+    /**
+     * Returns `true` if the given `object` is strictly `null`. Otherwise, returns`false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isNull(0);
+     * // Returns: false
+     * util.isNull(undefined);
+     * // Returns: false
+     * util.isNull(null);
+     * // Returns: true
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `value === null` instead.
+     */
+    export function isNull(object: unknown): object is null;
+    /**
+     * Returns `true` if the given `object` is `null` or `undefined`. Otherwise,
+     * returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isNullOrUndefined(0);
+     * // Returns: false
+     * util.isNullOrUndefined(undefined);
+     * // Returns: true
+     * util.isNullOrUndefined(null);
+     * // Returns: true
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `value === undefined || value === null` instead.
+     */
+    export function isNullOrUndefined(object: unknown): object is null | undefined;
+    /**
+     * Returns `true` if the given `object` is a `Number`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isNumber(false);
+     * // Returns: false
+     * util.isNumber(Infinity);
+     * // Returns: true
+     * util.isNumber(0);
+     * // Returns: true
+     * util.isNumber(NaN);
+     * // Returns: true
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `typeof value === 'number'` instead.
+     */
+    export function isNumber(object: unknown): object is number;
+    /**
+     * Returns `true` if the given `object` is strictly an `Object`**and** not a`Function` (even though functions are objects in JavaScript).
+     * Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isObject(5);
+     * // Returns: false
+     * util.isObject(null);
+     * // Returns: false
+     * util.isObject({});
+     * // Returns: true
+     * util.isObject(() => {});
+     * // Returns: false
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Deprecated: Use `value !== null && typeof value === 'object'` instead.
+     */
+    export function isObject(object: unknown): boolean;
+    /**
+     * Returns `true` if the given `object` is a primitive type. Otherwise, returns`false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isPrimitive(5);
+     * // Returns: true
+     * util.isPrimitive('foo');
+     * // Returns: true
+     * util.isPrimitive(false);
+     * // Returns: true
+     * util.isPrimitive(null);
+     * // Returns: true
+     * util.isPrimitive(undefined);
+     * // Returns: true
+     * util.isPrimitive({});
+     * // Returns: false
+     * util.isPrimitive(() => {});
+     * // Returns: false
+     * util.isPrimitive(/^$/);
+     * // Returns: false
+     * util.isPrimitive(new Date());
+     * // Returns: false
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `(typeof value !== 'object' && typeof value !== 'function') || value === null` instead.
+     */
+    export function isPrimitive(object: unknown): boolean;
+    /**
+     * Returns `true` if the given `object` is a `string`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isString('');
+     * // Returns: true
+     * util.isString('foo');
+     * // Returns: true
+     * util.isString(String('foo'));
+     * // Returns: true
+     * util.isString(5);
+     * // Returns: false
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `typeof value === 'string'` instead.
+     */
+    export function isString(object: unknown): object is string;
+    /**
+     * Returns `true` if the given `object` is a `Symbol`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * util.isSymbol(5);
+     * // Returns: false
+     * util.isSymbol('foo');
+     * // Returns: false
+     * util.isSymbol(Symbol('foo'));
+     * // Returns: true
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `typeof value === 'symbol'` instead.
+     */
+    export function isSymbol(object: unknown): object is symbol;
+    /**
+     * Returns `true` if the given `object` is `undefined`. Otherwise, returns `false`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * const foo = undefined;
+     * util.isUndefined(5);
+     * // Returns: false
+     * util.isUndefined(foo);
+     * // Returns: true
+     * util.isUndefined(null);
+     * // Returns: false
+     * ```
+     * @since v0.11.5
+     * @deprecated Since v4.0.0 - Use `value === undefined` instead.
+     */
+    export function isUndefined(object: unknown): object is undefined;
+    /**
+     * The `util.deprecate()` method wraps `fn` (which may be a function or class) in
+     * such a way that it is marked as deprecated.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * exports.obsoleteFunction = util.deprecate(() => {
+     *   // Do something here.
+     * }, 'obsoleteFunction() is deprecated. Use newShinyFunction() instead.');
+     * ```
+     *
+     * When called, `util.deprecate()` will return a function that will emit a`DeprecationWarning` using the `'warning'` event. The warning will
+     * be emitted and printed to `stderr` the first time the returned function is
+     * called. After the warning is emitted, the wrapped function is called without
+     * emitting a warning.
+     *
+     * If the same optional `code` is supplied in multiple calls to `util.deprecate()`,
+     * the warning will be emitted only once for that `code`.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * const fn1 = util.deprecate(someFunction, someMessage, 'DEP0001');
+     * const fn2 = util.deprecate(someOtherFunction, someOtherMessage, 'DEP0001');
+     * fn1(); // Emits a deprecation warning with code DEP0001
+     * fn2(); // Does not emit a deprecation warning because it has the same code
+     * ```
+     *
+     * If either the `--no-deprecation` or `--no-warnings` command-line flags are
+     * used, or if the `process.noDeprecation` property is set to `true`_prior_ to
+     * the first deprecation warning, the `util.deprecate()` method does nothing.
+     *
+     * If the `--trace-deprecation` or `--trace-warnings` command-line flags are set,
+     * or the `process.traceDeprecation` property is set to `true`, a warning and a
+     * stack trace are printed to `stderr` the first time the deprecated function is
+     * called.
+     *
+     * If the `--throw-deprecation` command-line flag is set, or the`process.throwDeprecation` property is set to `true`, then an exception will be
+     * thrown when the deprecated function is called.
+     *
+     * The `--throw-deprecation` command-line flag and `process.throwDeprecation`property take precedence over `--trace-deprecation` and`process.traceDeprecation`.
+     * @since v0.8.0
+     * @param fn The function that is being deprecated.
+     * @param msg A warning message to display when the deprecated function is invoked.
+     * @param code A deprecation code. See the `list of deprecated APIs` for a list of codes.
+     * @return The deprecated function wrapped to emit a warning.
+     */
+    export function deprecate<T extends Function>(fn: T, msg: string, code?: string): T;
+    /**
+     * Returns `true` if there is deep strict equality between `val1` and `val2`.
+     * Otherwise, returns `false`.
+     *
+     * See `assert.deepStrictEqual()` for more information about deep strict
+     * equality.
+     * @since v9.0.0
+     */
+    export function isDeepStrictEqual(val1: unknown, val2: unknown): boolean;
+    /**
+     * Returns `str` with any ANSI escape codes removed.
+     *
+     * ```js
+     * console.log(util.stripVTControlCharacters('\u001B[4mvalue\u001B[0m'));
+     * // Prints "value"
+     * ```
+     * @since v16.11.0
+     */
+    export function stripVTControlCharacters(str: string): string;
+    /**
+     * Takes an `async` function (or a function that returns a `Promise`) and returns a
+     * function following the error-first callback style, i.e. taking
+     * an `(err, value) => ...` callback as the last argument. In the callback, the
+     * first argument will be the rejection reason (or `null` if the `Promise`resolved), and the second argument will be the resolved value.
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * async function fn() {
+     *   return 'hello world';
+     * }
+     * const callbackFunction = util.callbackify(fn);
+     *
+     * callbackFunction((err, ret) => {
+     *   if (err) throw err;
+     *   console.log(ret);
+     * });
+     * ```
+     *
+     * Will print:
+     *
+     * ```text
+     * hello world
+     * ```
+     *
+     * The callback is executed asynchronously, and will have a limited stack trace.
+     * If the callback throws, the process will emit an `'uncaughtException'` event, and if not handled will exit.
+     *
+     * Since `null` has a special meaning as the first argument to a callback, if a
+     * wrapped function rejects a `Promise` with a falsy value as a reason, the value
+     * is wrapped in an `Error` with the original value stored in a field named`reason`.
+     *
+     * ```js
+     * function fn() {
+     *   return Promise.reject(null);
+     * }
+     * const callbackFunction = util.callbackify(fn);
+     *
+     * callbackFunction((err, ret) => {
+     *   // When the Promise was rejected with `null` it is wrapped with an Error and
+     *   // the original value is stored in `reason`.
+     *   err &#x26;&#x26; Object.hasOwn(err, 'reason') &#x26;&#x26; err.reason === null;  // true
+     * });
+     * ```
+     * @since v8.2.0
+     * @param original An `async` function
+     * @return a callback style function
+     */
+    export function callbackify(fn: () => Promise<void>): (callback: (err: NodeJS.ErrnoException) => void) => void;
+    export function callbackify<TResult>(fn: () => Promise<TResult>): (callback: (err: NodeJS.ErrnoException, result: TResult) => void) => void;
+    export function callbackify<T1>(fn: (arg1: T1) => Promise<void>): (arg1: T1, callback: (err: NodeJS.ErrnoException) => void) => void;
+    export function callbackify<T1, TResult>(fn: (arg1: T1) => Promise<TResult>): (arg1: T1, callback: (err: NodeJS.ErrnoException, result: TResult) => void) => void;
+    export function callbackify<T1, T2>(fn: (arg1: T1, arg2: T2) => Promise<void>): (arg1: T1, arg2: T2, callback: (err: NodeJS.ErrnoException) => void) => void;
+    export function callbackify<T1, T2, TResult>(fn: (arg1: T1, arg2: T2) => Promise<TResult>): (arg1: T1, arg2: T2, callback: (err: NodeJS.ErrnoException | null, result: TResult) => void) => void;
+    export function callbackify<T1, T2, T3>(fn: (arg1: T1, arg2: T2, arg3: T3) => Promise<void>): (arg1: T1, arg2: T2, arg3: T3, callback: (err: NodeJS.ErrnoException) => void) => void;
+    export function callbackify<T1, T2, T3, TResult>(
+        fn: (arg1: T1, arg2: T2, arg3: T3) => Promise<TResult>
+    ): (arg1: T1, arg2: T2, arg3: T3, callback: (err: NodeJS.ErrnoException | null, result: TResult) => void) => void;
+    export function callbackify<T1, T2, T3, T4>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4) => Promise<void>
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, callback: (err: NodeJS.ErrnoException) => void) => void;
+    export function callbackify<T1, T2, T3, T4, TResult>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4) => Promise<TResult>
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, callback: (err: NodeJS.ErrnoException | null, result: TResult) => void) => void;
+    export function callbackify<T1, T2, T3, T4, T5>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5) => Promise<void>
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, callback: (err: NodeJS.ErrnoException) => void) => void;
+    export function callbackify<T1, T2, T3, T4, T5, TResult>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5) => Promise<TResult>
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, callback: (err: NodeJS.ErrnoException | null, result: TResult) => void) => void;
+    export function callbackify<T1, T2, T3, T4, T5, T6>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, arg6: T6) => Promise<void>
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, arg6: T6, callback: (err: NodeJS.ErrnoException) => void) => void;
+    export function callbackify<T1, T2, T3, T4, T5, T6, TResult>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, arg6: T6) => Promise<TResult>
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, arg6: T6, callback: (err: NodeJS.ErrnoException | null, result: TResult) => void) => void;
+    export interface CustomPromisifyLegacy<TCustom extends Function> extends Function {
+        __promisify__: TCustom;
+    }
+    export interface CustomPromisifySymbol<TCustom extends Function> extends Function {
+        [promisify.custom]: TCustom;
+    }
+    export type CustomPromisify<TCustom extends Function> = CustomPromisifySymbol<TCustom> | CustomPromisifyLegacy<TCustom>;
+    /**
+     * Takes a function following the common error-first callback style, i.e. taking
+     * an `(err, value) => ...` callback as the last argument, and returns a version
+     * that returns promises.
+     *
+     * ```js
+     * const util = require('util');
+     * const fs = require('fs');
+     *
+     * const stat = util.promisify(fs.stat);
+     * stat('.').then((stats) => {
+     *   // Do something with `stats`
+     * }).catch((error) => {
+     *   // Handle the error.
+     * });
+     * ```
+     *
+     * Or, equivalently using `async function`s:
+     *
+     * ```js
+     * const util = require('util');
+     * const fs = require('fs');
+     *
+     * const stat = util.promisify(fs.stat);
+     *
+     * async function callStat() {
+     *   const stats = await stat('.');
+     *   console.log(`This directory is owned by ${stats.uid}`);
+     * }
+     * ```
+     *
+     * If there is an `original[util.promisify.custom]` property present, `promisify`will return its value, see `Custom promisified functions`.
+     *
+     * `promisify()` assumes that `original` is a function taking a callback as its
+     * final argument in all cases. If `original` is not a function, `promisify()`will throw an error. If `original` is a function but its last argument is not
+     * an error-first callback, it will still be passed an error-first
+     * callback as its last argument.
+     *
+     * Using `promisify()` on class methods or other methods that use `this` may not
+     * work as expected unless handled specially:
+     *
+     * ```js
+     * const util = require('util');
+     *
+     * class Foo {
+     *   constructor() {
+     *     this.a = 42;
+     *   }
+     *
+     *   bar(callback) {
+     *     callback(null, this.a);
+     *   }
+     * }
+     *
+     * const foo = new Foo();
+     *
+     * const naiveBar = util.promisify(foo.bar);
+     * // TypeError: Cannot read property 'a' of undefined
+     * // naiveBar().then(a => console.log(a));
+     *
+     * naiveBar.call(foo).then((a) => console.log(a)); // '42'
+     *
+     * const bindBar = naiveBar.bind(foo);
+     * bindBar().then((a) => console.log(a)); // '42'
+     * ```
+     * @since v8.0.0
+     */
+    export function promisify<TCustom extends Function>(fn: CustomPromisify<TCustom>): TCustom;
+    export function promisify<TResult>(fn: (callback: (err: any, result: TResult) => void) => void): () => Promise<TResult>;
+    export function promisify(fn: (callback: (err?: any) => void) => void): () => Promise<void>;
+    export function promisify<T1, TResult>(fn: (arg1: T1, callback: (err: any, result: TResult) => void) => void): (arg1: T1) => Promise<TResult>;
+    export function promisify<T1>(fn: (arg1: T1, callback: (err?: any) => void) => void): (arg1: T1) => Promise<void>;
+    export function promisify<T1, T2, TResult>(fn: (arg1: T1, arg2: T2, callback: (err: any, result: TResult) => void) => void): (arg1: T1, arg2: T2) => Promise<TResult>;
+    export function promisify<T1, T2>(fn: (arg1: T1, arg2: T2, callback: (err?: any) => void) => void): (arg1: T1, arg2: T2) => Promise<void>;
+    export function promisify<T1, T2, T3, TResult>(fn: (arg1: T1, arg2: T2, arg3: T3, callback: (err: any, result: TResult) => void) => void): (arg1: T1, arg2: T2, arg3: T3) => Promise<TResult>;
+    export function promisify<T1, T2, T3>(fn: (arg1: T1, arg2: T2, arg3: T3, callback: (err?: any) => void) => void): (arg1: T1, arg2: T2, arg3: T3) => Promise<void>;
+    export function promisify<T1, T2, T3, T4, TResult>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, callback: (err: any, result: TResult) => void) => void
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4) => Promise<TResult>;
+    export function promisify<T1, T2, T3, T4>(fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, callback: (err?: any) => void) => void): (arg1: T1, arg2: T2, arg3: T3, arg4: T4) => Promise<void>;
+    export function promisify<T1, T2, T3, T4, T5, TResult>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, callback: (err: any, result: TResult) => void) => void
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5) => Promise<TResult>;
+    export function promisify<T1, T2, T3, T4, T5>(
+        fn: (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5, callback: (err?: any) => void) => void
+    ): (arg1: T1, arg2: T2, arg3: T3, arg4: T4, arg5: T5) => Promise<void>;
+    export function promisify(fn: Function): Function;
+    export namespace promisify {
+        /**
+         * That can be used to declare custom promisified variants of functions.
+         */
+        const custom: unique symbol;
+    }
+    /**
+     * An implementation of the [WHATWG Encoding Standard](https://encoding.spec.whatwg.org/) `TextDecoder` API.
+     *
+     * ```js
+     * const decoder = new TextDecoder();
+     * const u8arr = new Uint8Array([72, 101, 108, 108, 111]);
+     * console.log(decoder.decode(u8arr)); // Hello
+     * ```
+     * @since v8.3.0
+     */
+    export class TextDecoder {
+        /**
+         * The encoding supported by the `TextDecoder` instance.
+         */
+        readonly encoding: string;
+        /**
+         * The value will be `true` if decoding errors result in a `TypeError` being
+         * thrown.
+         */
+        readonly fatal: boolean;
+        /**
+         * The value will be `true` if the decoding result will include the byte order
+         * mark.
+         */
+        readonly ignoreBOM: boolean;
+        constructor(
+            encoding?: string,
+            options?: {
+                fatal?: boolean | undefined;
+                ignoreBOM?: boolean | undefined;
+            }
+        );
+        /**
+         * Decodes the `input` and returns a string. If `options.stream` is `true`, any
+         * incomplete byte sequences occurring at the end of the `input` are buffered
+         * internally and emitted after the next call to `textDecoder.decode()`.
+         *
+         * If `textDecoder.fatal` is `true`, decoding errors that occur will result in a`TypeError` being thrown.
+         * @param input An `ArrayBuffer`, `DataView` or `TypedArray` instance containing the encoded data.
+         */
+        decode(
+            input?: NodeJS.ArrayBufferView | ArrayBuffer | null,
+            options?: {
+                stream?: boolean | undefined;
+            }
+        ): string;
+    }
+    export interface EncodeIntoResult {
+        /**
+         * The read Unicode code units of input.
+         */
+        read: number;
+        /**
+         * The written UTF-8 bytes of output.
+         */
+        written: number;
+    }
+    export { types };
+    /**
+     * An implementation of the [WHATWG Encoding Standard](https://encoding.spec.whatwg.org/) `TextEncoder` API. All
+     * instances of `TextEncoder` only support UTF-8 encoding.
+     *
+     * ```js
+     * const encoder = new TextEncoder();
+     * const uint8array = encoder.encode('this is some data');
+     * ```
+     *
+     * The `TextEncoder` class is also available on the global object.
+     * @since v8.3.0
+     */
+    export class TextEncoder {
+        /**
+         * The encoding supported by the `TextEncoder` instance. Always set to `'utf-8'`.
+         */
+        readonly encoding: string;
+        /**
+         * UTF-8 encodes the `input` string and returns a `Uint8Array` containing the
+         * encoded bytes.
+         * @param [input='an empty string'] The text to encode.
+         */
+        encode(input?: string): Uint8Array;
+        /**
+         * UTF-8 encodes the `src` string to the `dest` Uint8Array and returns an object
+         * containing the read Unicode code units and written UTF-8 bytes.
+         *
+         * ```js
+         * const encoder = new TextEncoder();
+         * const src = 'this is some data';
+         * const dest = new Uint8Array(10);
+         * const { read, written } = encoder.encodeInto(src, dest);
+         * ```
+         * @param src The text to encode.
+         * @param dest The array to hold the encode result.
+         */
+        encodeInto(src: string, dest: Uint8Array): EncodeIntoResult;
+    }
+
+    /**
+     * Provides a high-level API for command-line argument parsing. Takes a
+     * specification for the expected arguments and returns a structured object
+     * with the parsed values and positionals.
+     *
+     * `config` provides arguments for parsing and configures the parser. It
+     * supports the following properties:
+     *
+     *   - `args` The array of argument strings. **Default:** `process.argv` with
+     *     `execPath` and `filename` removed.
+     *   - `options` Arguments known to the parser. Keys of `options` are the long
+     *     names of options and values are objects accepting the following properties:
+     *
+     *     - `type` Type of argument, which must be either `boolean` (for options
+     *        which do not take values) or `string` (for options which do).
+     *     - `multiple` Whether this option can be provided multiple
+     *       times. If `true`, all values will be collected in an array. If
+     *       `false`, values for the option are last-wins. **Default:** `false`.
+     *     - `short` A single character alias for the option.
+     *
+     *   - `strict`: Whether an error should be thrown when unknown arguments
+     *     are encountered, or when arguments are passed that do not match the
+     *     `type` configured in `options`. **Default:** `true`.
+     *   - `allowPositionals`: Whether this command accepts positional arguments.
+     *     **Default:** `false` if `strict` is `true`, otherwise `true`.
+     *   - `tokens`: Whether tokens {boolean} Return the parsed tokens. This is useful
+     *     for extending the built-in behavior, from adding additional checks through
+     *     to reprocessing the tokens in different ways.
+     *     **Default:** `false`.
+     *
+     * @returns The parsed command line arguments:
+     *
+     *   - `values` A mapping of parsed option names with their string
+     *     or boolean values.
+     *   - `positionals` Positional arguments.
+     *   - `tokens` Detailed parse information (only if `tokens` was specified).
+     *
+     */
+    export function parseArgs<T extends ParseArgsConfig>(config: T): ParsedResults<T>;
+
+    interface ParseArgsOptionConfig {
+        type: 'string' | 'boolean';
+        short?: string;
+        multiple?: boolean;
+    }
+
+    interface ParseArgsOptionsConfig {
+        [longOption: string]: ParseArgsOptionConfig;
+    }
+
+    export interface ParseArgsConfig {
+        strict?: boolean;
+        allowPositionals?: boolean;
+        tokens?: boolean;
+        options?: ParseArgsOptionsConfig;
+        args?: string[];
+    }
+
+    /*
+    IfDefaultsTrue and IfDefaultsFalse are helpers to handle default values for missing boolean properties.
+    TypeScript does not have exact types for objects: https://github.com/microsoft/TypeScript/issues/12936
+    This means it is impossible to distinguish between "field X is definitely not present" and "field X may or may not be present".
+    But we expect users to generally provide their config inline or `as const`, which means TS will always know whether a given field is present.
+    So this helper treats "not definitely present" (i.e., not `extends boolean`) as being "definitely not present", i.e. it should have its default value.
+    This is technically incorrect but is a much nicer UX for the common case.
+    The IfDefaultsTrue version is for things which default to true; the IfDefaultsFalse version is for things which default to false.
+    */
+    type IfDefaultsTrue<T, IfTrue, IfFalse> = T extends true
+        ? IfTrue
+        : T extends false
+        ? IfFalse
+        : IfTrue;
+
+    // we put the `extends false` condition first here because `undefined` compares like `any` when `strictNullChecks: false`
+    type IfDefaultsFalse<T, IfTrue, IfFalse> = T extends false
+        ? IfFalse
+        : T extends true
+        ? IfTrue
+        : IfFalse;
+
+    type ExtractOptionValue<T extends ParseArgsConfig, O extends ParseArgsOptionConfig> = IfDefaultsTrue<
+        T['strict'],
+        O['type'] extends 'string' ? string : O['type'] extends 'boolean' ? boolean : string | boolean,
+        string | boolean
+    >;
+
+    type ParsedValues<T extends ParseArgsConfig> =
+        & IfDefaultsTrue<T['strict'], unknown, { [longOption: string]: undefined | string | boolean }>
+        & (T['options'] extends ParseArgsOptionsConfig
+            ? {
+                -readonly [LongOption in keyof T['options']]: IfDefaultsFalse<
+                    T['options'][LongOption]['multiple'],
+                    undefined | Array<ExtractOptionValue<T, T['options'][LongOption]>>,
+                    undefined | ExtractOptionValue<T, T['options'][LongOption]>
+                >;
+            }
+            : {});
+
+    type ParsedPositionals<T extends ParseArgsConfig> = IfDefaultsTrue<
+        T['strict'],
+        IfDefaultsFalse<T['allowPositionals'], string[], []>,
+        IfDefaultsTrue<T['allowPositionals'], string[], []>
+    >;
+
+    type PreciseTokenForOptions<
+        K extends string,
+        O extends ParseArgsOptionConfig,
+    > = O['type'] extends 'string'
+        ? {
+              kind: 'option';
+              index: number;
+              name: K;
+              rawName: string;
+              value: string;
+              inlineValue: boolean;
+          }
+        : O['type'] extends 'boolean'
+        ? {
+              kind: 'option';
+              index: number;
+              name: K;
+              rawName: string;
+              value: undefined;
+              inlineValue: undefined;
+          }
+        : OptionToken & { name: K };
+
+    type TokenForOptions<
+        T extends ParseArgsConfig,
+        K extends keyof T['options'] = keyof T['options'],
+    > = K extends unknown
+        ? T['options'] extends ParseArgsOptionsConfig
+            ? PreciseTokenForOptions<K & string, T['options'][K]>
+            : OptionToken
+        : never;
+
+    type ParsedOptionToken<T extends ParseArgsConfig> = IfDefaultsTrue<T['strict'], TokenForOptions<T>, OptionToken>;
+
+    type ParsedPositionalToken<T extends ParseArgsConfig> = IfDefaultsTrue<
+        T['strict'],
+        IfDefaultsFalse<T['allowPositionals'], { kind: 'positional'; index: number; value: string }, never>,
+        IfDefaultsTrue<T['allowPositionals'], { kind: 'positional'; index: number; value: string }, never>
+    >;
+
+    type ParsedTokens<T extends ParseArgsConfig> = Array<
+        ParsedOptionToken<T> | ParsedPositionalToken<T> | { kind: 'option-terminator'; index: number }
+    >;
+
+    type PreciseParsedResults<T extends ParseArgsConfig> = IfDefaultsFalse<
+        T['tokens'],
+        {
+            values: ParsedValues<T>;
+            positionals: ParsedPositionals<T>;
+            tokens: ParsedTokens<T>;
+        },
+        {
+            values: ParsedValues<T>;
+            positionals: ParsedPositionals<T>;
+        }
+    >;
+
+    type OptionToken =
+        | { kind: 'option'; index: number; name: string; rawName: string; value: string; inlineValue: boolean }
+        | {
+              kind: 'option';
+              index: number;
+              name: string;
+              rawName: string;
+              value: undefined;
+              inlineValue: undefined;
+          };
+
+    type Token =
+        | OptionToken
+        | { kind: 'positional'; index: number; value: string }
+        | { kind: 'option-terminator'; index: number };
+
+    // If ParseArgsConfig extends T, then the user passed config constructed elsewhere.
+    // So we can't rely on the `"not definitely present" implies "definitely not present"` assumption mentioned above.
+    type ParsedResults<T extends ParseArgsConfig> = ParseArgsConfig extends T
+        ? {
+              values: { [longOption: string]: undefined | string | boolean | Array<string | boolean> };
+              positionals: string[];
+              tokens?: Token[];
+          }
+        : PreciseParsedResults<T>;
+}
+declare module 'util/types' {
+    export * from 'util/types';
+}
+declare module 'util/types' {
+    import { KeyObject, webcrypto } from 'node:crypto';
+    /**
+     * Returns `true` if the value is a built-in [`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) or
+     * [`SharedArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer) instance.
+     *
+     * See also `util.types.isArrayBuffer()` and `util.types.isSharedArrayBuffer()`.
+     *
+     * ```js
+     * util.types.isAnyArrayBuffer(new ArrayBuffer());  // Returns true
+     * util.types.isAnyArrayBuffer(new SharedArrayBuffer());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isAnyArrayBuffer(object: unknown): object is ArrayBufferLike;
+    /**
+     * Returns `true` if the value is an `arguments` object.
+     *
+     * ```js
+     * function foo() {
+     *   util.types.isArgumentsObject(arguments);  // Returns true
+     * }
+     * ```
+     * @since v10.0.0
+     */
+    function isArgumentsObject(object: unknown): object is IArguments;
+    /**
+     * Returns `true` if the value is a built-in [`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) instance.
+     * This does _not_ include [`SharedArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer) instances. Usually, it is
+     * desirable to test for both; See `util.types.isAnyArrayBuffer()` for that.
+     *
+     * ```js
+     * util.types.isArrayBuffer(new ArrayBuffer());  // Returns true
+     * util.types.isArrayBuffer(new SharedArrayBuffer());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isArrayBuffer(object: unknown): object is ArrayBuffer;
+    /**
+     * Returns `true` if the value is an instance of one of the [`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) views, such as typed
+     * array objects or [`DataView`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView). Equivalent to
+     * [`ArrayBuffer.isView()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/isView).
+     *
+     * ```js
+     * util.types.isArrayBufferView(new Int8Array());  // true
+     * util.types.isArrayBufferView(Buffer.from('hello world')); // true
+     * util.types.isArrayBufferView(new DataView(new ArrayBuffer(16)));  // true
+     * util.types.isArrayBufferView(new ArrayBuffer());  // false
+     * ```
+     * @since v10.0.0
+     */
+    function isArrayBufferView(object: unknown): object is NodeJS.ArrayBufferView;
+    /**
+     * Returns `true` if the value is an [async function](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/async_function).
+     * This only reports back what the JavaScript engine is seeing;
+     * in particular, the return value may not match the original source code if
+     * a transpilation tool was used.
+     *
+     * ```js
+     * util.types.isAsyncFunction(function foo() {});  // Returns false
+     * util.types.isAsyncFunction(async function foo() {});  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isAsyncFunction(object: unknown): boolean;
+    /**
+     * Returns `true` if the value is a `BigInt64Array` instance.
+     *
+     * ```js
+     * util.types.isBigInt64Array(new BigInt64Array());   // Returns true
+     * util.types.isBigInt64Array(new BigUint64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isBigInt64Array(value: unknown): value is BigInt64Array;
+    /**
+     * Returns `true` if the value is a `BigUint64Array` instance.
+     *
+     * ```js
+     * util.types.isBigUint64Array(new BigInt64Array());   // Returns false
+     * util.types.isBigUint64Array(new BigUint64Array());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isBigUint64Array(value: unknown): value is BigUint64Array;
+    /**
+     * Returns `true` if the value is a boolean object, e.g. created
+     * by `new Boolean()`.
+     *
+     * ```js
+     * util.types.isBooleanObject(false);  // Returns false
+     * util.types.isBooleanObject(true);   // Returns false
+     * util.types.isBooleanObject(new Boolean(false)); // Returns true
+     * util.types.isBooleanObject(new Boolean(true));  // Returns true
+     * util.types.isBooleanObject(Boolean(false)); // Returns false
+     * util.types.isBooleanObject(Boolean(true));  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isBooleanObject(object: unknown): object is Boolean;
+    /**
+     * Returns `true` if the value is any boxed primitive object, e.g. created
+     * by `new Boolean()`, `new String()` or `Object(Symbol())`.
+     *
+     * For example:
+     *
+     * ```js
+     * util.types.isBoxedPrimitive(false); // Returns false
+     * util.types.isBoxedPrimitive(new Boolean(false)); // Returns true
+     * util.types.isBoxedPrimitive(Symbol('foo')); // Returns false
+     * util.types.isBoxedPrimitive(Object(Symbol('foo'))); // Returns true
+     * util.types.isBoxedPrimitive(Object(BigInt(5))); // Returns true
+     * ```
+     * @since v10.11.0
+     */
+    function isBoxedPrimitive(object: unknown): object is String | Number | BigInt | Boolean | Symbol;
+    /**
+     * Returns `true` if the value is a built-in [`DataView`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/DataView) instance.
+     *
+     * ```js
+     * const ab = new ArrayBuffer(20);
+     * util.types.isDataView(new DataView(ab));  // Returns true
+     * util.types.isDataView(new Float64Array());  // Returns false
+     * ```
+     *
+     * See also [`ArrayBuffer.isView()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/isView).
+     * @since v10.0.0
+     */
+    function isDataView(object: unknown): object is DataView;
+    /**
+     * Returns `true` if the value is a built-in [`Date`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date) instance.
+     *
+     * ```js
+     * util.types.isDate(new Date());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isDate(object: unknown): object is Date;
+    /**
+     * Returns `true` if the value is a native `External` value.
+     *
+     * A native `External` value is a special type of object that contains a
+     * raw C++ pointer (`void*`) for access from native code, and has no other
+     * properties. Such objects are created either by Node.js internals or native
+     * addons. In JavaScript, they are [frozen](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/freeze) objects with a`null` prototype.
+     *
+     * ```c
+     * #include <js_native_api.h>
+     * #include <stdlib.h>
+     * napi_value result;
+     * static napi_value MyNapi(napi_env env, napi_callback_info info) {
+     *   int* raw = (int*) malloc(1024);
+     *   napi_status status = napi_create_external(env, (void*) raw, NULL, NULL, &#x26;result);
+     *   if (status != napi_ok) {
+     *     napi_throw_error(env, NULL, "napi_create_external failed");
+     *     return NULL;
+     *   }
+     *   return result;
+     * }
+     * ...
+     * DECLARE_NAPI_PROPERTY("myNapi", MyNapi)
+     * ...
+     * ```
+     *
+     * ```js
+     * const native = require('napi_addon.node');
+     * const data = native.myNapi();
+     * util.types.isExternal(data); // returns true
+     * util.types.isExternal(0); // returns false
+     * util.types.isExternal(new String('foo')); // returns false
+     * ```
+     *
+     * For further information on `napi_create_external`, refer to `napi_create_external()`.
+     * @since v10.0.0
+     */
+    function isExternal(object: unknown): boolean;
+    /**
+     * Returns `true` if the value is a built-in [`Float32Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float32Array) instance.
+     *
+     * ```js
+     * util.types.isFloat32Array(new ArrayBuffer());  // Returns false
+     * util.types.isFloat32Array(new Float32Array());  // Returns true
+     * util.types.isFloat32Array(new Float64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isFloat32Array(object: unknown): object is Float32Array;
+    /**
+     * Returns `true` if the value is a built-in [`Float64Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Float64Array) instance.
+     *
+     * ```js
+     * util.types.isFloat64Array(new ArrayBuffer());  // Returns false
+     * util.types.isFloat64Array(new Uint8Array());  // Returns false
+     * util.types.isFloat64Array(new Float64Array());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isFloat64Array(object: unknown): object is Float64Array;
+    /**
+     * Returns `true` if the value is a generator function.
+     * This only reports back what the JavaScript engine is seeing;
+     * in particular, the return value may not match the original source code if
+     * a transpilation tool was used.
+     *
+     * ```js
+     * util.types.isGeneratorFunction(function foo() {});  // Returns false
+     * util.types.isGeneratorFunction(function* foo() {});  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isGeneratorFunction(object: unknown): object is GeneratorFunction;
+    /**
+     * Returns `true` if the value is a generator object as returned from a
+     * built-in generator function.
+     * This only reports back what the JavaScript engine is seeing;
+     * in particular, the return value may not match the original source code if
+     * a transpilation tool was used.
+     *
+     * ```js
+     * function* foo() {}
+     * const generator = foo();
+     * util.types.isGeneratorObject(generator);  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isGeneratorObject(object: unknown): object is Generator;
+    /**
+     * Returns `true` if the value is a built-in [`Int8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int8Array) instance.
+     *
+     * ```js
+     * util.types.isInt8Array(new ArrayBuffer());  // Returns false
+     * util.types.isInt8Array(new Int8Array());  // Returns true
+     * util.types.isInt8Array(new Float64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isInt8Array(object: unknown): object is Int8Array;
+    /**
+     * Returns `true` if the value is a built-in [`Int16Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int16Array) instance.
+     *
+     * ```js
+     * util.types.isInt16Array(new ArrayBuffer());  // Returns false
+     * util.types.isInt16Array(new Int16Array());  // Returns true
+     * util.types.isInt16Array(new Float64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isInt16Array(object: unknown): object is Int16Array;
+    /**
+     * Returns `true` if the value is a built-in [`Int32Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Int32Array) instance.
+     *
+     * ```js
+     * util.types.isInt32Array(new ArrayBuffer());  // Returns false
+     * util.types.isInt32Array(new Int32Array());  // Returns true
+     * util.types.isInt32Array(new Float64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isInt32Array(object: unknown): object is Int32Array;
+    /**
+     * Returns `true` if the value is a built-in [`Map`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map) instance.
+     *
+     * ```js
+     * util.types.isMap(new Map());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isMap<T>(object: T | {}): object is T extends ReadonlyMap<any, any> ? (unknown extends T ? never : ReadonlyMap<any, any>) : Map<unknown, unknown>;
+    /**
+     * Returns `true` if the value is an iterator returned for a built-in [`Map`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Map) instance.
+     *
+     * ```js
+     * const map = new Map();
+     * util.types.isMapIterator(map.keys());  // Returns true
+     * util.types.isMapIterator(map.values());  // Returns true
+     * util.types.isMapIterator(map.entries());  // Returns true
+     * util.types.isMapIterator(map[Symbol.iterator]());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isMapIterator(object: unknown): boolean;
+    /**
+     * Returns `true` if the value is an instance of a [Module Namespace Object](https://tc39.github.io/ecma262/#sec-module-namespace-exotic-objects).
+     *
+     * ```js
+     * import * as ns from './a.js';
+     *
+     * util.types.isModuleNamespaceObject(ns);  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isModuleNamespaceObject(value: unknown): boolean;
+    /**
+     * Returns `true` if the value is an instance of a built-in `Error` type.
+     *
+     * ```js
+     * util.types.isNativeError(new Error());  // Returns true
+     * util.types.isNativeError(new TypeError());  // Returns true
+     * util.types.isNativeError(new RangeError());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isNativeError(object: unknown): object is Error;
+    /**
+     * Returns `true` if the value is a number object, e.g. created
+     * by `new Number()`.
+     *
+     * ```js
+     * util.types.isNumberObject(0);  // Returns false
+     * util.types.isNumberObject(new Number(0));   // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isNumberObject(object: unknown): object is Number;
+    /**
+     * Returns `true` if the value is a built-in [`Promise`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Promise).
+     *
+     * ```js
+     * util.types.isPromise(Promise.resolve(42));  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isPromise(object: unknown): object is Promise<unknown>;
+    /**
+     * Returns `true` if the value is a [`Proxy`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Proxy) instance.
+     *
+     * ```js
+     * const target = {};
+     * const proxy = new Proxy(target, {});
+     * util.types.isProxy(target);  // Returns false
+     * util.types.isProxy(proxy);  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isProxy(object: unknown): boolean;
+    /**
+     * Returns `true` if the value is a regular expression object.
+     *
+     * ```js
+     * util.types.isRegExp(/abc/);  // Returns true
+     * util.types.isRegExp(new RegExp('abc'));  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isRegExp(object: unknown): object is RegExp;
+    /**
+     * Returns `true` if the value is a built-in [`Set`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set) instance.
+     *
+     * ```js
+     * util.types.isSet(new Set());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isSet<T>(object: T | {}): object is T extends ReadonlySet<any> ? (unknown extends T ? never : ReadonlySet<any>) : Set<unknown>;
+    /**
+     * Returns `true` if the value is an iterator returned for a built-in [`Set`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Set) instance.
+     *
+     * ```js
+     * const set = new Set();
+     * util.types.isSetIterator(set.keys());  // Returns true
+     * util.types.isSetIterator(set.values());  // Returns true
+     * util.types.isSetIterator(set.entries());  // Returns true
+     * util.types.isSetIterator(set[Symbol.iterator]());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isSetIterator(object: unknown): boolean;
+    /**
+     * Returns `true` if the value is a built-in [`SharedArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer) instance.
+     * This does _not_ include [`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) instances. Usually, it is
+     * desirable to test for both; See `util.types.isAnyArrayBuffer()` for that.
+     *
+     * ```js
+     * util.types.isSharedArrayBuffer(new ArrayBuffer());  // Returns false
+     * util.types.isSharedArrayBuffer(new SharedArrayBuffer());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isSharedArrayBuffer(object: unknown): object is SharedArrayBuffer;
+    /**
+     * Returns `true` if the value is a string object, e.g. created
+     * by `new String()`.
+     *
+     * ```js
+     * util.types.isStringObject('foo');  // Returns false
+     * util.types.isStringObject(new String('foo'));   // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isStringObject(object: unknown): object is String;
+    /**
+     * Returns `true` if the value is a symbol object, created
+     * by calling `Object()` on a `Symbol` primitive.
+     *
+     * ```js
+     * const symbol = Symbol('foo');
+     * util.types.isSymbolObject(symbol);  // Returns false
+     * util.types.isSymbolObject(Object(symbol));   // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isSymbolObject(object: unknown): object is Symbol;
+    /**
+     * Returns `true` if the value is a built-in [`TypedArray`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/TypedArray) instance.
+     *
+     * ```js
+     * util.types.isTypedArray(new ArrayBuffer());  // Returns false
+     * util.types.isTypedArray(new Uint8Array());  // Returns true
+     * util.types.isTypedArray(new Float64Array());  // Returns true
+     * ```
+     *
+     * See also [`ArrayBuffer.isView()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer/isView).
+     * @since v10.0.0
+     */
+    function isTypedArray(object: unknown): object is NodeJS.TypedArray;
+    /**
+     * Returns `true` if the value is a built-in [`Uint8Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8Array) instance.
+     *
+     * ```js
+     * util.types.isUint8Array(new ArrayBuffer());  // Returns false
+     * util.types.isUint8Array(new Uint8Array());  // Returns true
+     * util.types.isUint8Array(new Float64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isUint8Array(object: unknown): object is Uint8Array;
+    /**
+     * Returns `true` if the value is a built-in [`Uint8ClampedArray`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint8ClampedArray) instance.
+     *
+     * ```js
+     * util.types.isUint8ClampedArray(new ArrayBuffer());  // Returns false
+     * util.types.isUint8ClampedArray(new Uint8ClampedArray());  // Returns true
+     * util.types.isUint8ClampedArray(new Float64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isUint8ClampedArray(object: unknown): object is Uint8ClampedArray;
+    /**
+     * Returns `true` if the value is a built-in [`Uint16Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint16Array) instance.
+     *
+     * ```js
+     * util.types.isUint16Array(new ArrayBuffer());  // Returns false
+     * util.types.isUint16Array(new Uint16Array());  // Returns true
+     * util.types.isUint16Array(new Float64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isUint16Array(object: unknown): object is Uint16Array;
+    /**
+     * Returns `true` if the value is a built-in [`Uint32Array`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Uint32Array) instance.
+     *
+     * ```js
+     * util.types.isUint32Array(new ArrayBuffer());  // Returns false
+     * util.types.isUint32Array(new Uint32Array());  // Returns true
+     * util.types.isUint32Array(new Float64Array());  // Returns false
+     * ```
+     * @since v10.0.0
+     */
+    function isUint32Array(object: unknown): object is Uint32Array;
+    /**
+     * Returns `true` if the value is a built-in [`WeakMap`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakMap) instance.
+     *
+     * ```js
+     * util.types.isWeakMap(new WeakMap());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isWeakMap(object: unknown): object is WeakMap<object, unknown>;
+    /**
+     * Returns `true` if the value is a built-in [`WeakSet`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WeakSet) instance.
+     *
+     * ```js
+     * util.types.isWeakSet(new WeakSet());  // Returns true
+     * ```
+     * @since v10.0.0
+     */
+    function isWeakSet(object: unknown): object is WeakSet<object>;
+    /**
+     * Returns `true` if `value` is a `KeyObject`, `false` otherwise.
+     * @since v16.2.0
+     */
+    function isKeyObject(object: unknown): object is KeyObject;
+    /**
+     * Returns `true` if `value` is a `CryptoKey`, `false` otherwise.
+     * @since v16.2.0
+     */
+    function isCryptoKey(object: unknown): object is webcrypto.CryptoKey;
+}
+declare module 'node:util' {
+    export * from 'util';
+}
+declare module 'node:util/types' {
+    export * from 'util/types';
+}
diff --git a/igv_component/node_modules/@types/node/v8.d.ts b/igv_component/node_modules/@types/node/v8.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6685dc253c009a0a2865811f959233b8dc17aa9a
--- /dev/null
+++ b/igv_component/node_modules/@types/node/v8.d.ts
@@ -0,0 +1,396 @@
+/**
+ * The `v8` module exposes APIs that are specific to the version of [V8](https://developers.google.com/v8/) built into the Node.js binary. It can be accessed using:
+ *
+ * ```js
+ * const v8 = require('v8');
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/v8.js)
+ */
+declare module 'v8' {
+    import { Readable } from 'node:stream';
+    interface HeapSpaceInfo {
+        space_name: string;
+        space_size: number;
+        space_used_size: number;
+        space_available_size: number;
+        physical_space_size: number;
+    }
+    // ** Signifies if the --zap_code_space option is enabled or not.  1 == enabled, 0 == disabled. */
+    type DoesZapCodeSpaceFlag = 0 | 1;
+    interface HeapInfo {
+        total_heap_size: number;
+        total_heap_size_executable: number;
+        total_physical_size: number;
+        total_available_size: number;
+        used_heap_size: number;
+        heap_size_limit: number;
+        malloced_memory: number;
+        peak_malloced_memory: number;
+        does_zap_garbage: DoesZapCodeSpaceFlag;
+        number_of_native_contexts: number;
+        number_of_detached_contexts: number;
+    }
+    interface HeapCodeStatistics {
+        code_and_metadata_size: number;
+        bytecode_and_metadata_size: number;
+        external_script_source_size: number;
+    }
+    /**
+     * Returns an integer representing a version tag derived from the V8 version,
+     * command-line flags, and detected CPU features. This is useful for determining
+     * whether a `vm.Script` `cachedData` buffer is compatible with this instance
+     * of V8.
+     *
+     * ```js
+     * console.log(v8.cachedDataVersionTag()); // 3947234607
+     * // The value returned by v8.cachedDataVersionTag() is derived from the V8
+     * // version, command-line flags, and detected CPU features. Test that the value
+     * // does indeed update when flags are toggled.
+     * v8.setFlagsFromString('--allow_natives_syntax');
+     * console.log(v8.cachedDataVersionTag()); // 183726201
+     * ```
+     * @since v8.0.0
+     */
+    function cachedDataVersionTag(): number;
+    /**
+     * Returns an object with the following properties:
+     *
+     * `does_zap_garbage` is a 0/1 boolean, which signifies whether the`--zap_code_space` option is enabled or not. This makes V8 overwrite heap
+     * garbage with a bit pattern. The RSS footprint (resident set size) gets bigger
+     * because it continuously touches all heap pages and that makes them less likely
+     * to get swapped out by the operating system.
+     *
+     * `number_of_native_contexts` The value of native\_context is the number of the
+     * top-level contexts currently active. Increase of this number over time indicates
+     * a memory leak.
+     *
+     * `number_of_detached_contexts` The value of detached\_context is the number
+     * of contexts that were detached and not yet garbage collected. This number
+     * being non-zero indicates a potential memory leak.
+     *
+     * ```js
+     * {
+     *   total_heap_size: 7326976,
+     *   total_heap_size_executable: 4194304,
+     *   total_physical_size: 7326976,
+     *   total_available_size: 1152656,
+     *   used_heap_size: 3476208,
+     *   heap_size_limit: 1535115264,
+     *   malloced_memory: 16384,
+     *   peak_malloced_memory: 1127496,
+     *   does_zap_garbage: 0,
+     *   number_of_native_contexts: 1,
+     *   number_of_detached_contexts: 0
+     * }
+     * ```
+     * @since v1.0.0
+     */
+    function getHeapStatistics(): HeapInfo;
+    /**
+     * Returns statistics about the V8 heap spaces, i.e. the segments which make up
+     * the V8 heap. Neither the ordering of heap spaces, nor the availability of a
+     * heap space can be guaranteed as the statistics are provided via the
+     * V8[`GetHeapSpaceStatistics`](https://v8docs.nodesource.com/node-13.2/d5/dda/classv8_1_1_isolate.html#ac673576f24fdc7a33378f8f57e1d13a4) function and may change from one V8 version to the
+     * next.
+     *
+     * The value returned is an array of objects containing the following properties:
+     *
+     * ```json
+     * [
+     *   {
+     *     "space_name": "new_space",
+     *     "space_size": 2063872,
+     *     "space_used_size": 951112,
+     *     "space_available_size": 80824,
+     *     "physical_space_size": 2063872
+     *   },
+     *   {
+     *     "space_name": "old_space",
+     *     "space_size": 3090560,
+     *     "space_used_size": 2493792,
+     *     "space_available_size": 0,
+     *     "physical_space_size": 3090560
+     *   },
+     *   {
+     *     "space_name": "code_space",
+     *     "space_size": 1260160,
+     *     "space_used_size": 644256,
+     *     "space_available_size": 960,
+     *     "physical_space_size": 1260160
+     *   },
+     *   {
+     *     "space_name": "map_space",
+     *     "space_size": 1094160,
+     *     "space_used_size": 201608,
+     *     "space_available_size": 0,
+     *     "physical_space_size": 1094160
+     *   },
+     *   {
+     *     "space_name": "large_object_space",
+     *     "space_size": 0,
+     *     "space_used_size": 0,
+     *     "space_available_size": 1490980608,
+     *     "physical_space_size": 0
+     *   }
+     * ]
+     * ```
+     * @since v6.0.0
+     */
+    function getHeapSpaceStatistics(): HeapSpaceInfo[];
+    /**
+     * The `v8.setFlagsFromString()` method can be used to programmatically set
+     * V8 command-line flags. This method should be used with care. Changing settings
+     * after the VM has started may result in unpredictable behavior, including
+     * crashes and data loss; or it may simply do nothing.
+     *
+     * The V8 options available for a version of Node.js may be determined by running`node --v8-options`.
+     *
+     * Usage:
+     *
+     * ```js
+     * // Print GC events to stdout for one minute.
+     * const v8 = require('v8');
+     * v8.setFlagsFromString('--trace_gc');
+     * setTimeout(() => { v8.setFlagsFromString('--notrace_gc'); }, 60e3);
+     * ```
+     * @since v1.0.0
+     */
+    function setFlagsFromString(flags: string): void;
+    /**
+     * Generates a snapshot of the current V8 heap and returns a Readable
+     * Stream that may be used to read the JSON serialized representation.
+     * This JSON stream format is intended to be used with tools such as
+     * Chrome DevTools. The JSON schema is undocumented and specific to the
+     * V8 engine. Therefore, the schema may change from one version of V8 to the next.
+     *
+     * Creating a heap snapshot requires memory about twice the size of the heap at
+     * the time the snapshot is created. This results in the risk of OOM killers
+     * terminating the process.
+     *
+     * Generating a snapshot is a synchronous operation which blocks the event loop
+     * for a duration depending on the heap size.
+     *
+     * ```js
+     * // Print heap snapshot to the console
+     * const v8 = require('v8');
+     * const stream = v8.getHeapSnapshot();
+     * stream.pipe(process.stdout);
+     * ```
+     * @since v11.13.0
+     * @return A Readable Stream containing the V8 heap snapshot
+     */
+    function getHeapSnapshot(): Readable;
+    /**
+     * Generates a snapshot of the current V8 heap and writes it to a JSON
+     * file. This file is intended to be used with tools such as Chrome
+     * DevTools. The JSON schema is undocumented and specific to the V8
+     * engine, and may change from one version of V8 to the next.
+     *
+     * A heap snapshot is specific to a single V8 isolate. When using `worker threads`, a heap snapshot generated from the main thread will
+     * not contain any information about the workers, and vice versa.
+     *
+     * Creating a heap snapshot requires memory about twice the size of the heap at
+     * the time the snapshot is created. This results in the risk of OOM killers
+     * terminating the process.
+     *
+     * Generating a snapshot is a synchronous operation which blocks the event loop
+     * for a duration depending on the heap size.
+     *
+     * ```js
+     * const { writeHeapSnapshot } = require('v8');
+     * const {
+     *   Worker,
+     *   isMainThread,
+     *   parentPort
+     * } = require('worker_threads');
+     *
+     * if (isMainThread) {
+     *   const worker = new Worker(__filename);
+     *
+     *   worker.once('message', (filename) => {
+     *     console.log(`worker heapdump: ${filename}`);
+     *     // Now get a heapdump for the main thread.
+     *     console.log(`main thread heapdump: ${writeHeapSnapshot()}`);
+     *   });
+     *
+     *   // Tell the worker to create a heapdump.
+     *   worker.postMessage('heapdump');
+     * } else {
+     *   parentPort.once('message', (message) => {
+     *     if (message === 'heapdump') {
+     *       // Generate a heapdump for the worker
+     *       // and return the filename to the parent.
+     *       parentPort.postMessage(writeHeapSnapshot());
+     *     }
+     *   });
+     * }
+     * ```
+     * @since v11.13.0
+     * @param filename The file path where the V8 heap snapshot is to be saved. If not specified, a file name with the pattern `'Heap-${yyyymmdd}-${hhmmss}-${pid}-${thread_id}.heapsnapshot'` will be
+     * generated, where `{pid}` will be the PID of the Node.js process, `{thread_id}` will be `0` when `writeHeapSnapshot()` is called from the main Node.js thread or the id of a
+     * worker thread.
+     * @return The filename where the snapshot was saved.
+     */
+    function writeHeapSnapshot(filename?: string): string;
+    /**
+     * Returns an object with the following properties:
+     *
+     * ```js
+     * {
+     *   code_and_metadata_size: 212208,
+     *   bytecode_and_metadata_size: 161368,
+     *   external_script_source_size: 1410794
+     * }
+     * ```
+     * @since v12.8.0
+     */
+    function getHeapCodeStatistics(): HeapCodeStatistics;
+    /**
+     * @since v8.0.0
+     */
+    class Serializer {
+        /**
+         * Writes out a header, which includes the serialization format version.
+         */
+        writeHeader(): void;
+        /**
+         * Serializes a JavaScript value and adds the serialized representation to the
+         * internal buffer.
+         *
+         * This throws an error if `value` cannot be serialized.
+         */
+        writeValue(val: any): boolean;
+        /**
+         * Returns the stored internal buffer. This serializer should not be used once
+         * the buffer is released. Calling this method results in undefined behavior
+         * if a previous write has failed.
+         */
+        releaseBuffer(): Buffer;
+        /**
+         * Marks an `ArrayBuffer` as having its contents transferred out of band.
+         * Pass the corresponding `ArrayBuffer` in the deserializing context to `deserializer.transferArrayBuffer()`.
+         * @param id A 32-bit unsigned integer.
+         * @param arrayBuffer An `ArrayBuffer` instance.
+         */
+        transferArrayBuffer(id: number, arrayBuffer: ArrayBuffer): void;
+        /**
+         * Write a raw 32-bit unsigned integer.
+         * For use inside of a custom `serializer._writeHostObject()`.
+         */
+        writeUint32(value: number): void;
+        /**
+         * Write a raw 64-bit unsigned integer, split into high and low 32-bit parts.
+         * For use inside of a custom `serializer._writeHostObject()`.
+         */
+        writeUint64(hi: number, lo: number): void;
+        /**
+         * Write a JS `number` value.
+         * For use inside of a custom `serializer._writeHostObject()`.
+         */
+        writeDouble(value: number): void;
+        /**
+         * Write raw bytes into the serializer’s internal buffer. The deserializer
+         * will require a way to compute the length of the buffer.
+         * For use inside of a custom `serializer._writeHostObject()`.
+         */
+        writeRawBytes(buffer: NodeJS.TypedArray): void;
+    }
+    /**
+     * A subclass of `Serializer` that serializes `TypedArray`(in particular `Buffer`) and `DataView` objects as host objects, and only
+     * stores the part of their underlying `ArrayBuffer`s that they are referring to.
+     * @since v8.0.0
+     */
+    class DefaultSerializer extends Serializer {}
+    /**
+     * @since v8.0.0
+     */
+    class Deserializer {
+        constructor(data: NodeJS.TypedArray);
+        /**
+         * Reads and validates a header (including the format version).
+         * May, for example, reject an invalid or unsupported wire format. In that case,
+         * an `Error` is thrown.
+         */
+        readHeader(): boolean;
+        /**
+         * Deserializes a JavaScript value from the buffer and returns it.
+         */
+        readValue(): any;
+        /**
+         * Marks an `ArrayBuffer` as having its contents transferred out of band.
+         * Pass the corresponding `ArrayBuffer` in the serializing context to `serializer.transferArrayBuffer()` (or return the `id` from `serializer._getSharedArrayBufferId()` in the case of
+         * `SharedArrayBuffer`s).
+         * @param id A 32-bit unsigned integer.
+         * @param arrayBuffer An `ArrayBuffer` instance.
+         */
+        transferArrayBuffer(id: number, arrayBuffer: ArrayBuffer): void;
+        /**
+         * Reads the underlying wire format version. Likely mostly to be useful to
+         * legacy code reading old wire format versions. May not be called before`.readHeader()`.
+         */
+        getWireFormatVersion(): number;
+        /**
+         * Read a raw 32-bit unsigned integer and return it.
+         * For use inside of a custom `deserializer._readHostObject()`.
+         */
+        readUint32(): number;
+        /**
+         * Read a raw 64-bit unsigned integer and return it as an array `[hi, lo]`with two 32-bit unsigned integer entries.
+         * For use inside of a custom `deserializer._readHostObject()`.
+         */
+        readUint64(): [number, number];
+        /**
+         * Read a JS `number` value.
+         * For use inside of a custom `deserializer._readHostObject()`.
+         */
+        readDouble(): number;
+        /**
+         * Read raw bytes from the deserializer’s internal buffer. The `length` parameter
+         * must correspond to the length of the buffer that was passed to `serializer.writeRawBytes()`.
+         * For use inside of a custom `deserializer._readHostObject()`.
+         */
+        readRawBytes(length: number): Buffer;
+    }
+    /**
+     * A subclass of `Deserializer` corresponding to the format written by `DefaultSerializer`.
+     * @since v8.0.0
+     */
+    class DefaultDeserializer extends Deserializer {}
+    /**
+     * Uses a `DefaultSerializer` to serialize `value` into a buffer.
+     *
+     * `ERR_BUFFER_TOO_LARGE` will be thrown when trying to
+     * serialize a huge object which requires buffer
+     * larger than `buffer.constants.MAX_LENGTH`.
+     * @since v8.0.0
+     */
+    function serialize(value: any): Buffer;
+    /**
+     * Uses a `DefaultDeserializer` with default options to read a JS value
+     * from a buffer.
+     * @since v8.0.0
+     * @param buffer A buffer returned by {@link serialize}.
+     */
+    function deserialize(buffer: NodeJS.TypedArray): any;
+    /**
+     * The `v8.takeCoverage()` method allows the user to write the coverage started by `NODE_V8_COVERAGE` to disk on demand. This method can be invoked multiple
+     * times during the lifetime of the process. Each time the execution counter will
+     * be reset and a new coverage report will be written to the directory specified
+     * by `NODE_V8_COVERAGE`.
+     *
+     * When the process is about to exit, one last coverage will still be written to
+     * disk unless {@link stopCoverage} is invoked before the process exits.
+     * @since v15.1.0, v14.18.0, v12.22.0
+     */
+    function takeCoverage(): void;
+    /**
+     * The `v8.stopCoverage()` method allows the user to stop the coverage collection
+     * started by `NODE_V8_COVERAGE`, so that V8 can release the execution count
+     * records and optimize code. This can be used in conjunction with {@link takeCoverage} if the user wants to collect the coverage on demand.
+     * @since v15.1.0, v14.18.0, v12.22.0
+     */
+    function stopCoverage(): void;
+}
+declare module 'node:v8' {
+    export * from 'v8';
+}
diff --git a/igv_component/node_modules/@types/node/vm.d.ts b/igv_component/node_modules/@types/node/vm.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..c96513a50555debf6fd50aa0e414a18d1d342efb
--- /dev/null
+++ b/igv_component/node_modules/@types/node/vm.d.ts
@@ -0,0 +1,509 @@
+/**
+ * The `vm` module enables compiling and running code within V8 Virtual
+ * Machine contexts.
+ *
+ * **The `vm` module is not a security**
+ * **mechanism. Do not use it to run untrusted code.**
+ *
+ * JavaScript code can be compiled and run immediately or
+ * compiled, saved, and run later.
+ *
+ * A common use case is to run the code in a different V8 Context. This means
+ * invoked code has a different global object than the invoking code.
+ *
+ * One can provide the context by `contextifying` an
+ * object. The invoked code treats any property in the context like a
+ * global variable. Any changes to global variables caused by the invoked
+ * code are reflected in the context object.
+ *
+ * ```js
+ * const vm = require('vm');
+ *
+ * const x = 1;
+ *
+ * const context = { x: 2 };
+ * vm.createContext(context); // Contextify the object.
+ *
+ * const code = 'x += 40; var y = 17;';
+ * // `x` and `y` are global variables in the context.
+ * // Initially, x has the value 2 because that is the value of context.x.
+ * vm.runInContext(code, context);
+ *
+ * console.log(context.x); // 42
+ * console.log(context.y); // 17
+ *
+ * console.log(x); // 1; y is not defined.
+ * ```
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/vm.js)
+ */
+declare module 'vm' {
+    interface Context extends NodeJS.Dict<any> {}
+    interface BaseOptions {
+        /**
+         * Specifies the filename used in stack traces produced by this script.
+         * Default: `''`.
+         */
+        filename?: string | undefined;
+        /**
+         * Specifies the line number offset that is displayed in stack traces produced by this script.
+         * Default: `0`.
+         */
+        lineOffset?: number | undefined;
+        /**
+         * Specifies the column number offset that is displayed in stack traces produced by this script.
+         * @default 0
+         */
+        columnOffset?: number | undefined;
+    }
+    interface ScriptOptions extends BaseOptions {
+        displayErrors?: boolean | undefined;
+        timeout?: number | undefined;
+        cachedData?: Buffer | undefined;
+        /** @deprecated in favor of `script.createCachedData()` */
+        produceCachedData?: boolean | undefined;
+    }
+    interface RunningScriptOptions extends BaseOptions {
+        /**
+         * When `true`, if an `Error` occurs while compiling the `code`, the line of code causing the error is attached to the stack trace.
+         * Default: `true`.
+         */
+        displayErrors?: boolean | undefined;
+        /**
+         * Specifies the number of milliseconds to execute code before terminating execution.
+         * If execution is terminated, an `Error` will be thrown. This value must be a strictly positive integer.
+         */
+        timeout?: number | undefined;
+        /**
+         * If `true`, the execution will be terminated when `SIGINT` (Ctrl+C) is received.
+         * Existing handlers for the event that have been attached via `process.on('SIGINT')` will be disabled during script execution, but will continue to work after that.
+         * If execution is terminated, an `Error` will be thrown.
+         * Default: `false`.
+         */
+        breakOnSigint?: boolean | undefined;
+        /**
+         * If set to `afterEvaluate`, microtasks will be run immediately after the script has run.
+         */
+        microtaskMode?: 'afterEvaluate' | undefined;
+    }
+    interface CompileFunctionOptions extends BaseOptions {
+        /**
+         * Provides an optional data with V8's code cache data for the supplied source.
+         */
+        cachedData?: Buffer | undefined;
+        /**
+         * Specifies whether to produce new cache data.
+         * Default: `false`,
+         */
+        produceCachedData?: boolean | undefined;
+        /**
+         * The sandbox/context in which the said function should be compiled in.
+         */
+        parsingContext?: Context | undefined;
+        /**
+         * An array containing a collection of context extensions (objects wrapping the current scope) to be applied while compiling
+         */
+        contextExtensions?: Object[] | undefined;
+    }
+    interface CreateContextOptions {
+        /**
+         * Human-readable name of the newly created context.
+         * @default 'VM Context i' Where i is an ascending numerical index of the created context.
+         */
+        name?: string | undefined;
+        /**
+         * Corresponds to the newly created context for display purposes.
+         * The origin should be formatted like a `URL`, but with only the scheme, host, and port (if necessary),
+         * like the value of the `url.origin` property of a URL object.
+         * Most notably, this string should omit the trailing slash, as that denotes a path.
+         * @default ''
+         */
+        origin?: string | undefined;
+        codeGeneration?:
+            | {
+                  /**
+                   * If set to false any calls to eval or function constructors (Function, GeneratorFunction, etc)
+                   * will throw an EvalError.
+                   * @default true
+                   */
+                  strings?: boolean | undefined;
+                  /**
+                   * If set to false any attempt to compile a WebAssembly module will throw a WebAssembly.CompileError.
+                   * @default true
+                   */
+                  wasm?: boolean | undefined;
+              }
+            | undefined;
+        /**
+         * If set to `afterEvaluate`, microtasks will be run immediately after the script has run.
+         */
+        microtaskMode?: 'afterEvaluate' | undefined;
+    }
+    type MeasureMemoryMode = 'summary' | 'detailed';
+    interface MeasureMemoryOptions {
+        /**
+         * @default 'summary'
+         */
+        mode?: MeasureMemoryMode | undefined;
+        context?: Context | undefined;
+    }
+    interface MemoryMeasurement {
+        total: {
+            jsMemoryEstimate: number;
+            jsMemoryRange: [number, number];
+        };
+    }
+    /**
+     * Instances of the `vm.Script` class contain precompiled scripts that can be
+     * executed in specific contexts.
+     * @since v0.3.1
+     */
+    class Script {
+        constructor(code: string, options?: ScriptOptions);
+        /**
+         * Runs the compiled code contained by the `vm.Script` object within the given`contextifiedObject` and returns the result. Running code does not have access
+         * to local scope.
+         *
+         * The following example compiles code that increments a global variable, sets
+         * the value of another global variable, then execute the code multiple times.
+         * The globals are contained in the `context` object.
+         *
+         * ```js
+         * const vm = require('vm');
+         *
+         * const context = {
+         *   animal: 'cat',
+         *   count: 2
+         * };
+         *
+         * const script = new vm.Script('count += 1; name = "kitty";');
+         *
+         * vm.createContext(context);
+         * for (let i = 0; i < 10; ++i) {
+         *   script.runInContext(context);
+         * }
+         *
+         * console.log(context);
+         * // Prints: { animal: 'cat', count: 12, name: 'kitty' }
+         * ```
+         *
+         * Using the `timeout` or `breakOnSigint` options will result in new event loops
+         * and corresponding threads being started, which have a non-zero performance
+         * overhead.
+         * @since v0.3.1
+         * @param contextifiedObject A `contextified` object as returned by the `vm.createContext()` method.
+         * @return the result of the very last statement executed in the script.
+         */
+        runInContext(contextifiedObject: Context, options?: RunningScriptOptions): any;
+        /**
+         * First contextifies the given `contextObject`, runs the compiled code contained
+         * by the `vm.Script` object within the created context, and returns the result.
+         * Running code does not have access to local scope.
+         *
+         * The following example compiles code that sets a global variable, then executes
+         * the code multiple times in different contexts. The globals are set on and
+         * contained within each individual `context`.
+         *
+         * ```js
+         * const vm = require('vm');
+         *
+         * const script = new vm.Script('globalVar = "set"');
+         *
+         * const contexts = [{}, {}, {}];
+         * contexts.forEach((context) => {
+         *   script.runInNewContext(context);
+         * });
+         *
+         * console.log(contexts);
+         * // Prints: [{ globalVar: 'set' }, { globalVar: 'set' }, { globalVar: 'set' }]
+         * ```
+         * @since v0.3.1
+         * @param contextObject An object that will be `contextified`. If `undefined`, a new object will be created.
+         * @return the result of the very last statement executed in the script.
+         */
+        runInNewContext(contextObject?: Context, options?: RunningScriptOptions): any;
+        /**
+         * Runs the compiled code contained by the `vm.Script` within the context of the
+         * current `global` object. Running code does not have access to local scope, but _does_ have access to the current `global` object.
+         *
+         * The following example compiles code that increments a `global` variable then
+         * executes that code multiple times:
+         *
+         * ```js
+         * const vm = require('vm');
+         *
+         * global.globalVar = 0;
+         *
+         * const script = new vm.Script('globalVar += 1', { filename: 'myfile.vm' });
+         *
+         * for (let i = 0; i < 1000; ++i) {
+         *   script.runInThisContext();
+         * }
+         *
+         * console.log(globalVar);
+         *
+         * // 1000
+         * ```
+         * @since v0.3.1
+         * @return the result of the very last statement executed in the script.
+         */
+        runInThisContext(options?: RunningScriptOptions): any;
+        /**
+         * Creates a code cache that can be used with the `Script` constructor's`cachedData` option. Returns a `Buffer`. This method may be called at any
+         * time and any number of times.
+         *
+         * ```js
+         * const script = new vm.Script(`
+         * function add(a, b) {
+         *   return a + b;
+         * }
+         *
+         * const x = add(1, 2);
+         * `);
+         *
+         * const cacheWithoutX = script.createCachedData();
+         *
+         * script.runInThisContext();
+         *
+         * const cacheWithX = script.createCachedData();
+         * ```
+         * @since v10.6.0
+         */
+        createCachedData(): Buffer;
+        /** @deprecated in favor of `script.createCachedData()` */
+        cachedDataProduced?: boolean | undefined;
+        cachedDataRejected?: boolean | undefined;
+        cachedData?: Buffer | undefined;
+    }
+    /**
+     * If given a `contextObject`, the `vm.createContext()` method will `prepare
+     * that object` so that it can be used in calls to {@link runInContext} or `script.runInContext()`. Inside such scripts,
+     * the `contextObject` will be the global object, retaining all of its existing
+     * properties but also having the built-in objects and functions any standard [global object](https://es5.github.io/#x15.1) has. Outside of scripts run by the vm module, global variables
+     * will remain unchanged.
+     *
+     * ```js
+     * const vm = require('vm');
+     *
+     * global.globalVar = 3;
+     *
+     * const context = { globalVar: 1 };
+     * vm.createContext(context);
+     *
+     * vm.runInContext('globalVar *= 2;', context);
+     *
+     * console.log(context);
+     * // Prints: { globalVar: 2 }
+     *
+     * console.log(global.globalVar);
+     * // Prints: 3
+     * ```
+     *
+     * If `contextObject` is omitted (or passed explicitly as `undefined`), a new,
+     * empty `contextified` object will be returned.
+     *
+     * The `vm.createContext()` method is primarily useful for creating a single
+     * context that can be used to run multiple scripts. For instance, if emulating a
+     * web browser, the method can be used to create a single context representing a
+     * window's global object, then run all `<script>` tags together within that
+     * context.
+     *
+     * The provided `name` and `origin` of the context are made visible through the
+     * Inspector API.
+     * @since v0.3.1
+     * @return contextified object.
+     */
+    function createContext(sandbox?: Context, options?: CreateContextOptions): Context;
+    /**
+     * Returns `true` if the given `object` object has been `contextified` using {@link createContext}.
+     * @since v0.11.7
+     */
+    function isContext(sandbox: Context): boolean;
+    /**
+     * The `vm.runInContext()` method compiles `code`, runs it within the context of
+     * the `contextifiedObject`, then returns the result. Running code does not have
+     * access to the local scope. The `contextifiedObject` object _must_ have been
+     * previously `contextified` using the {@link createContext} method.
+     *
+     * If `options` is a string, then it specifies the filename.
+     *
+     * The following example compiles and executes different scripts using a single `contextified` object:
+     *
+     * ```js
+     * const vm = require('vm');
+     *
+     * const contextObject = { globalVar: 1 };
+     * vm.createContext(contextObject);
+     *
+     * for (let i = 0; i < 10; ++i) {
+     *   vm.runInContext('globalVar *= 2;', contextObject);
+     * }
+     * console.log(contextObject);
+     * // Prints: { globalVar: 1024 }
+     * ```
+     * @since v0.3.1
+     * @param code The JavaScript code to compile and run.
+     * @param contextifiedObject The `contextified` object that will be used as the `global` when the `code` is compiled and run.
+     * @return the result of the very last statement executed in the script.
+     */
+    function runInContext(code: string, contextifiedObject: Context, options?: RunningScriptOptions | string): any;
+    /**
+     * The `vm.runInNewContext()` first contextifies the given `contextObject` (or
+     * creates a new `contextObject` if passed as `undefined`), compiles the `code`,
+     * runs it within the created context, then returns the result. Running code
+     * does not have access to the local scope.
+     *
+     * If `options` is a string, then it specifies the filename.
+     *
+     * The following example compiles and executes code that increments a global
+     * variable and sets a new one. These globals are contained in the `contextObject`.
+     *
+     * ```js
+     * const vm = require('vm');
+     *
+     * const contextObject = {
+     *   animal: 'cat',
+     *   count: 2
+     * };
+     *
+     * vm.runInNewContext('count += 1; name = "kitty"', contextObject);
+     * console.log(contextObject);
+     * // Prints: { animal: 'cat', count: 3, name: 'kitty' }
+     * ```
+     * @since v0.3.1
+     * @param code The JavaScript code to compile and run.
+     * @param contextObject An object that will be `contextified`. If `undefined`, a new object will be created.
+     * @return the result of the very last statement executed in the script.
+     */
+    function runInNewContext(code: string, contextObject?: Context, options?: RunningScriptOptions | string): any;
+    /**
+     * `vm.runInThisContext()` compiles `code`, runs it within the context of the
+     * current `global` and returns the result. Running code does not have access to
+     * local scope, but does have access to the current `global` object.
+     *
+     * If `options` is a string, then it specifies the filename.
+     *
+     * The following example illustrates using both `vm.runInThisContext()` and
+     * the JavaScript [`eval()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval) function to run the same code:
+     *
+     * ```js
+     * const vm = require('vm');
+     * let localVar = 'initial value';
+     *
+     * const vmResult = vm.runInThisContext('localVar = "vm";');
+     * console.log(`vmResult: '${vmResult}', localVar: '${localVar}'`);
+     * // Prints: vmResult: 'vm', localVar: 'initial value'
+     *
+     * const evalResult = eval('localVar = "eval";');
+     * console.log(`evalResult: '${evalResult}', localVar: '${localVar}'`);
+     * // Prints: evalResult: 'eval', localVar: 'eval'
+     * ```
+     *
+     * Because `vm.runInThisContext()` does not have access to the local scope,`localVar` is unchanged. In contrast,
+     * [`eval()`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/eval) _does_ have access to the
+     * local scope, so the value `localVar` is changed. In this way`vm.runInThisContext()` is much like an [indirect `eval()` call](https://es5.github.io/#x10.4.2), e.g.`(0,eval)('code')`.
+     *
+     * ## Example: Running an HTTP server within a VM
+     *
+     * When using either `script.runInThisContext()` or {@link runInThisContext}, the code is executed within the current V8 global
+     * context. The code passed to this VM context will have its own isolated scope.
+     *
+     * In order to run a simple web server using the `http` module the code passed to
+     * the context must either call `require('http')` on its own, or have a reference
+     * to the `http` module passed to it. For instance:
+     *
+     * ```js
+     * 'use strict';
+     * const vm = require('vm');
+     *
+     * const code = `
+     * ((require) => {
+     *   const http = require('http');
+     *
+     *   http.createServer((request, response) => {
+     *     response.writeHead(200, { 'Content-Type': 'text/plain' });
+     *     response.end('Hello World\\n');
+     *   }).listen(8124);
+     *
+     *   console.log('Server running at http://127.0.0.1:8124/');
+     * })`;
+     *
+     * vm.runInThisContext(code)(require);
+     * ```
+     *
+     * The `require()` in the above case shares the state with the context it is
+     * passed from. This may introduce risks when untrusted code is executed, e.g.
+     * altering objects in the context in unwanted ways.
+     * @since v0.3.1
+     * @param code The JavaScript code to compile and run.
+     * @return the result of the very last statement executed in the script.
+     */
+    function runInThisContext(code: string, options?: RunningScriptOptions | string): any;
+    /**
+     * Compiles the given code into the provided context (if no context is
+     * supplied, the current context is used), and returns it wrapped inside a
+     * function with the given `params`.
+     * @since v10.10.0
+     * @param code The body of the function to compile.
+     * @param params An array of strings containing all parameters for the function.
+     */
+    function compileFunction(code: string, params?: ReadonlyArray<string>, options?: CompileFunctionOptions): Function;
+    /**
+     * Measure the memory known to V8 and used by all contexts known to the
+     * current V8 isolate, or the main context.
+     *
+     * The format of the object that the returned Promise may resolve with is
+     * specific to the V8 engine and may change from one version of V8 to the next.
+     *
+     * The returned result is different from the statistics returned by`v8.getHeapSpaceStatistics()` in that `vm.measureMemory()` measure the
+     * memory reachable by each V8 specific contexts in the current instance of
+     * the V8 engine, while the result of `v8.getHeapSpaceStatistics()` measure
+     * the memory occupied by each heap space in the current V8 instance.
+     *
+     * ```js
+     * const vm = require('vm');
+     * // Measure the memory used by the main context.
+     * vm.measureMemory({ mode: 'summary' })
+     *   // This is the same as vm.measureMemory()
+     *   .then((result) => {
+     *     // The current format is:
+     *     // {
+     *     //   total: {
+     *     //      jsMemoryEstimate: 2418479, jsMemoryRange: [ 2418479, 2745799 ]
+     *     //    }
+     *     // }
+     *     console.log(result);
+     *   });
+     *
+     * const context = vm.createContext({ a: 1 });
+     * vm.measureMemory({ mode: 'detailed', execution: 'eager' })
+     *   .then((result) => {
+     *     // Reference the context here so that it won't be GC'ed
+     *     // until the measurement is complete.
+     *     console.log(context.a);
+     *     // {
+     *     //   total: {
+     *     //     jsMemoryEstimate: 2574732,
+     *     //     jsMemoryRange: [ 2574732, 2904372 ]
+     *     //   },
+     *     //   current: {
+     *     //     jsMemoryEstimate: 2438996,
+     *     //     jsMemoryRange: [ 2438996, 2768636 ]
+     *     //   },
+     *     //   other: [
+     *     //     {
+     *     //       jsMemoryEstimate: 135736,
+     *     //       jsMemoryRange: [ 135736, 465376 ]
+     *     //     }
+     *     //   ]
+     *     // }
+     *     console.log(result);
+     *   });
+     * ```
+     * @since v13.10.0
+     * @experimental
+     */
+    function measureMemory(options?: MeasureMemoryOptions): Promise<MemoryMeasurement>;
+}
+declare module 'node:vm' {
+    export * from 'vm';
+}
diff --git a/igv_component/node_modules/@types/node/wasi.d.ts b/igv_component/node_modules/@types/node/wasi.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d20b66bf443eeae7eb10f04576ab1e1e1e2da418
--- /dev/null
+++ b/igv_component/node_modules/@types/node/wasi.d.ts
@@ -0,0 +1,158 @@
+/**
+ * The WASI API provides an implementation of the [WebAssembly System Interface](https://wasi.dev/) specification. WASI gives sandboxed WebAssembly applications access to the
+ * underlying operating system via a collection of POSIX-like functions.
+ *
+ * ```js
+ * import { readFile } from 'fs/promises';
+ * import { WASI } from 'wasi';
+ * import { argv, env } from 'process';
+ *
+ * const wasi = new WASI({
+ *   args: argv,
+ *   env,
+ *   preopens: {
+ *     '/sandbox': '/some/real/path/that/wasm/can/access'
+ *   }
+ * });
+ *
+ * // Some WASI binaries require:
+ * //   const importObject = { wasi_unstable: wasi.wasiImport };
+ * const importObject = { wasi_snapshot_preview1: wasi.wasiImport };
+ *
+ * const wasm = await WebAssembly.compile(
+ *   await readFile(new URL('./demo.wasm', import.meta.url))
+ * );
+ * const instance = await WebAssembly.instantiate(wasm, importObject);
+ *
+ * wasi.start(instance);
+ * ```
+ *
+ * To run the above example, create a new WebAssembly text format file named`demo.wat`:
+ *
+ * ```text
+ * (module
+ *     ;; Import the required fd_write WASI function which will write the given io vectors to stdout
+ *     ;; The function signature for fd_write is:
+ *     ;; (File Descriptor, *iovs, iovs_len, nwritten) -> Returns number of bytes written
+ *     (import "wasi_snapshot_preview1" "fd_write" (func $fd_write (param i32 i32 i32 i32) (result i32)))
+ *
+ *     (memory 1)
+ *     (export "memory" (memory 0))
+ *
+ *     ;; Write 'hello world\n' to memory at an offset of 8 bytes
+ *     ;; Note the trailing newline which is required for the text to appear
+ *     (data (i32.const 8) "hello world\n")
+ *
+ *     (func $main (export "_start")
+ *         ;; Creating a new io vector within linear memory
+ *         (i32.store (i32.const 0) (i32.const 8))  ;; iov.iov_base - This is a pointer to the start of the 'hello world\n' string
+ *         (i32.store (i32.const 4) (i32.const 12))  ;; iov.iov_len - The length of the 'hello world\n' string
+ *
+ *         (call $fd_write
+ *             (i32.const 1) ;; file_descriptor - 1 for stdout
+ *             (i32.const 0) ;; *iovs - The pointer to the iov array, which is stored at memory location 0
+ *             (i32.const 1) ;; iovs_len - We're printing 1 string stored in an iov - so one.
+ *             (i32.const 20) ;; nwritten - A place in memory to store the number of bytes written
+ *         )
+ *         drop ;; Discard the number of bytes written from the top of the stack
+ *     )
+ * )
+ * ```
+ *
+ * Use [wabt](https://github.com/WebAssembly/wabt) to compile `.wat` to `.wasm`
+ *
+ * ```console
+ * $ wat2wasm demo.wat
+ * ```
+ *
+ * The `--experimental-wasi-unstable-preview1` CLI argument is needed for this
+ * example to run.
+ * @experimental
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/wasi.js)
+ */
+declare module 'wasi' {
+    interface WASIOptions {
+        /**
+         * An array of strings that the WebAssembly application will
+         * see as command line arguments. The first argument is the virtual path to the
+         * WASI command itself.
+         */
+        args?: string[] | undefined;
+        /**
+         * An object similar to `process.env` that the WebAssembly
+         * application will see as its environment.
+         */
+        env?: object | undefined;
+        /**
+         * This object represents the WebAssembly application's
+         * sandbox directory structure. The string keys of `preopens` are treated as
+         * directories within the sandbox. The corresponding values in `preopens` are
+         * the real paths to those directories on the host machine.
+         */
+        preopens?: NodeJS.Dict<string> | undefined;
+        /**
+         * By default, WASI applications terminate the Node.js
+         * process via the `__wasi_proc_exit()` function. Setting this option to `true`
+         * causes `wasi.start()` to return the exit code rather than terminate the
+         * process.
+         * @default false
+         */
+        returnOnExit?: boolean | undefined;
+        /**
+         * The file descriptor used as standard input in the WebAssembly application.
+         * @default 0
+         */
+        stdin?: number | undefined;
+        /**
+         * The file descriptor used as standard output in the WebAssembly application.
+         * @default 1
+         */
+        stdout?: number | undefined;
+        /**
+         * The file descriptor used as standard error in the WebAssembly application.
+         * @default 2
+         */
+        stderr?: number | undefined;
+    }
+    /**
+     * The `WASI` class provides the WASI system call API and additional convenience
+     * methods for working with WASI-based applications. Each `WASI` instance
+     * represents a distinct sandbox environment. For security purposes, each `WASI`instance must have its command-line arguments, environment variables, and
+     * sandbox directory structure configured explicitly.
+     * @since v13.3.0, v12.16.0
+     */
+    class WASI {
+        constructor(options?: WASIOptions);
+        /**
+         * Attempt to begin execution of `instance` as a WASI command by invoking its`_start()` export. If `instance` does not contain a `_start()` export, or if`instance` contains an `_initialize()`
+         * export, then an exception is thrown.
+         *
+         * `start()` requires that `instance` exports a [`WebAssembly.Memory`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Memory) named`memory`. If
+         * `instance` does not have a `memory` export an exception is thrown.
+         *
+         * If `start()` is called more than once, an exception is thrown.
+         * @since v13.3.0, v12.16.0
+         */
+        start(instance: object): void; // TODO: avoid DOM dependency until WASM moved to own lib.
+        /**
+         * Attempt to initialize `instance` as a WASI reactor by invoking its`_initialize()` export, if it is present. If `instance` contains a `_start()`export, then an exception is thrown.
+         *
+         * `initialize()` requires that `instance` exports a [`WebAssembly.Memory`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Memory) named`memory`.
+         * If `instance` does not have a `memory` export an exception is thrown.
+         *
+         * If `initialize()` is called more than once, an exception is thrown.
+         * @since v14.6.0, v12.19.0
+         */
+        initialize(instance: object): void; // TODO: avoid DOM dependency until WASM moved to own lib.
+        /**
+         * `wasiImport` is an object that implements the WASI system call API. This object
+         * should be passed as the `wasi_snapshot_preview1` import during the instantiation
+         * of a [`WebAssembly.Instance`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Instance).
+         * @since v13.3.0, v12.16.0
+         */
+        readonly wasiImport: NodeJS.Dict<any>; // TODO: Narrow to DOM types
+    }
+}
+declare module 'node:wasi' {
+    export * from 'wasi';
+}
diff --git a/igv_component/node_modules/@types/node/worker_threads.d.ts b/igv_component/node_modules/@types/node/worker_threads.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..81b71c28313f6afb4b918dd6a14a9c8ae70784de
--- /dev/null
+++ b/igv_component/node_modules/@types/node/worker_threads.d.ts
@@ -0,0 +1,646 @@
+/**
+ * The `worker_threads` module enables the use of threads that execute JavaScript
+ * in parallel. To access it:
+ *
+ * ```js
+ * const worker = require('worker_threads');
+ * ```
+ *
+ * Workers (threads) are useful for performing CPU-intensive JavaScript operations.
+ * They do not help much with I/O-intensive work. The Node.js built-in
+ * asynchronous I/O operations are more efficient than Workers can be.
+ *
+ * Unlike `child_process` or `cluster`, `worker_threads` can share memory. They do
+ * so by transferring `ArrayBuffer` instances or sharing `SharedArrayBuffer`instances.
+ *
+ * ```js
+ * const {
+ *   Worker, isMainThread, parentPort, workerData
+ * } = require('worker_threads');
+ *
+ * if (isMainThread) {
+ *   module.exports = function parseJSAsync(script) {
+ *     return new Promise((resolve, reject) => {
+ *       const worker = new Worker(__filename, {
+ *         workerData: script
+ *       });
+ *       worker.on('message', resolve);
+ *       worker.on('error', reject);
+ *       worker.on('exit', (code) => {
+ *         if (code !== 0)
+ *           reject(new Error(`Worker stopped with exit code ${code}`));
+ *       });
+ *     });
+ *   };
+ * } else {
+ *   const { parse } = require('some-js-parsing-library');
+ *   const script = workerData;
+ *   parentPort.postMessage(parse(script));
+ * }
+ * ```
+ *
+ * The above example spawns a Worker thread for each `parseJSAsync()` call. In
+ * practice, use a pool of Workers for these kinds of tasks. Otherwise, the
+ * overhead of creating Workers would likely exceed their benefit.
+ *
+ * When implementing a worker pool, use the `AsyncResource` API to inform
+ * diagnostic tools (e.g. to provide asynchronous stack traces) about the
+ * correlation between tasks and their outcomes. See `"Using AsyncResource for a Worker thread pool"` in the `async_hooks` documentation for an example implementation.
+ *
+ * Worker threads inherit non-process-specific options by default. Refer to `Worker constructor options` to know how to customize worker thread options,
+ * specifically `argv` and `execArgv` options.
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/worker_threads.js)
+ */
+declare module 'worker_threads' {
+    import { Blob } from 'node:buffer';
+    import { Context } from 'node:vm';
+    import { EventEmitter } from 'node:events';
+    import { EventLoopUtilityFunction } from 'node:perf_hooks';
+    import { FileHandle } from 'node:fs/promises';
+    import { Readable, Writable } from 'node:stream';
+    import { URL } from 'node:url';
+    import { X509Certificate } from 'node:crypto';
+    const isMainThread: boolean;
+    const parentPort: null | MessagePort;
+    const resourceLimits: ResourceLimits;
+    const SHARE_ENV: unique symbol;
+    const threadId: number;
+    const workerData: any;
+    /**
+     * Instances of the `worker.MessageChannel` class represent an asynchronous,
+     * two-way communications channel.
+     * The `MessageChannel` has no methods of its own. `new MessageChannel()`yields an object with `port1` and `port2` properties, which refer to linked `MessagePort` instances.
+     *
+     * ```js
+     * const { MessageChannel } = require('worker_threads');
+     *
+     * const { port1, port2 } = new MessageChannel();
+     * port1.on('message', (message) => console.log('received', message));
+     * port2.postMessage({ foo: 'bar' });
+     * // Prints: received { foo: 'bar' } from the `port1.on('message')` listener
+     * ```
+     * @since v10.5.0
+     */
+    class MessageChannel {
+        readonly port1: MessagePort;
+        readonly port2: MessagePort;
+    }
+    interface WorkerPerformance {
+        eventLoopUtilization: EventLoopUtilityFunction;
+    }
+    type TransferListItem = ArrayBuffer | MessagePort | FileHandle | X509Certificate | Blob;
+    /**
+     * Instances of the `worker.MessagePort` class represent one end of an
+     * asynchronous, two-way communications channel. It can be used to transfer
+     * structured data, memory regions and other `MessagePort`s between different `Worker` s.
+     *
+     * This implementation matches [browser `MessagePort`](https://developer.mozilla.org/en-US/docs/Web/API/MessagePort) s.
+     * @since v10.5.0
+     */
+    class MessagePort extends EventEmitter {
+        /**
+         * Disables further sending of messages on either side of the connection.
+         * This method can be called when no further communication will happen over this`MessagePort`.
+         *
+         * The `'close' event` is emitted on both `MessagePort` instances that
+         * are part of the channel.
+         * @since v10.5.0
+         */
+        close(): void;
+        /**
+         * Sends a JavaScript value to the receiving side of this channel.`value` is transferred in a way which is compatible with
+         * the [HTML structured clone algorithm](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API/Structured_clone_algorithm).
+         *
+         * In particular, the significant differences to `JSON` are:
+         *
+         * * `value` may contain circular references.
+         * * `value` may contain instances of builtin JS types such as `RegExp`s,`BigInt`s, `Map`s, `Set`s, etc.
+         * * `value` may contain typed arrays, both using `ArrayBuffer`s
+         * and `SharedArrayBuffer`s.
+         * * `value` may contain [`WebAssembly.Module`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/WebAssembly/Module) instances.
+         * * `value` may not contain native (C++-backed) objects other than:
+         *
+         * ```js
+         * const { MessageChannel } = require('worker_threads');
+         * const { port1, port2 } = new MessageChannel();
+         *
+         * port1.on('message', (message) => console.log(message));
+         *
+         * const circularData = {};
+         * circularData.foo = circularData;
+         * // Prints: { foo: [Circular] }
+         * port2.postMessage(circularData);
+         * ```
+         *
+         * `transferList` may be a list of [`ArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer), `MessagePort` and `FileHandle` objects.
+         * After transferring, they are not usable on the sending side of the channel
+         * anymore (even if they are not contained in `value`). Unlike with `child processes`, transferring handles such as network sockets is currently
+         * not supported.
+         *
+         * If `value` contains [`SharedArrayBuffer`](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/SharedArrayBuffer) instances, those are accessible
+         * from either thread. They cannot be listed in `transferList`.
+         *
+         * `value` may still contain `ArrayBuffer` instances that are not in`transferList`; in that case, the underlying memory is copied rather than moved.
+         *
+         * ```js
+         * const { MessageChannel } = require('worker_threads');
+         * const { port1, port2 } = new MessageChannel();
+         *
+         * port1.on('message', (message) => console.log(message));
+         *
+         * const uint8Array = new Uint8Array([ 1, 2, 3, 4 ]);
+         * // This posts a copy of `uint8Array`:
+         * port2.postMessage(uint8Array);
+         * // This does not copy data, but renders `uint8Array` unusable:
+         * port2.postMessage(uint8Array, [ uint8Array.buffer ]);
+         *
+         * // The memory for the `sharedUint8Array` is accessible from both the
+         * // original and the copy received by `.on('message')`:
+         * const sharedUint8Array = new Uint8Array(new SharedArrayBuffer(4));
+         * port2.postMessage(sharedUint8Array);
+         *
+         * // This transfers a freshly created message port to the receiver.
+         * // This can be used, for example, to create communication channels between
+         * // multiple `Worker` threads that are children of the same parent thread.
+         * const otherChannel = new MessageChannel();
+         * port2.postMessage({ port: otherChannel.port1 }, [ otherChannel.port1 ]);
+         * ```
+         *
+         * The message object is cloned immediately, and can be modified after
+         * posting without having side effects.
+         *
+         * For more information on the serialization and deserialization mechanisms
+         * behind this API, see the `serialization API of the v8 module`.
+         * @since v10.5.0
+         */
+        postMessage(value: any, transferList?: ReadonlyArray<TransferListItem>): void;
+        /**
+         * Opposite of `unref()`. Calling `ref()` on a previously `unref()`ed port does _not_ let the program exit if it's the only active handle left (the default
+         * behavior). If the port is `ref()`ed, calling `ref()` again has no effect.
+         *
+         * If listeners are attached or removed using `.on('message')`, the port
+         * is `ref()`ed and `unref()`ed automatically depending on whether
+         * listeners for the event exist.
+         * @since v10.5.0
+         */
+        ref(): void;
+        /**
+         * Calling `unref()` on a port allows the thread to exit if this is the only
+         * active handle in the event system. If the port is already `unref()`ed calling`unref()` again has no effect.
+         *
+         * If listeners are attached or removed using `.on('message')`, the port is`ref()`ed and `unref()`ed automatically depending on whether
+         * listeners for the event exist.
+         * @since v10.5.0
+         */
+        unref(): void;
+        /**
+         * Starts receiving messages on this `MessagePort`. When using this port
+         * as an event emitter, this is called automatically once `'message'`listeners are attached.
+         *
+         * This method exists for parity with the Web `MessagePort` API. In Node.js,
+         * it is only useful for ignoring messages when no event listener is present.
+         * Node.js also diverges in its handling of `.onmessage`. Setting it
+         * automatically calls `.start()`, but unsetting it lets messages queue up
+         * until a new handler is set or the port is discarded.
+         * @since v10.5.0
+         */
+        start(): void;
+        addListener(event: 'close', listener: () => void): this;
+        addListener(event: 'message', listener: (value: any) => void): this;
+        addListener(event: 'messageerror', listener: (error: Error) => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'close'): boolean;
+        emit(event: 'message', value: any): boolean;
+        emit(event: 'messageerror', error: Error): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'close', listener: () => void): this;
+        on(event: 'message', listener: (value: any) => void): this;
+        on(event: 'messageerror', listener: (error: Error) => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'close', listener: () => void): this;
+        once(event: 'message', listener: (value: any) => void): this;
+        once(event: 'messageerror', listener: (error: Error) => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'close', listener: () => void): this;
+        prependListener(event: 'message', listener: (value: any) => void): this;
+        prependListener(event: 'messageerror', listener: (error: Error) => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'close', listener: () => void): this;
+        prependOnceListener(event: 'message', listener: (value: any) => void): this;
+        prependOnceListener(event: 'messageerror', listener: (error: Error) => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        removeListener(event: 'close', listener: () => void): this;
+        removeListener(event: 'message', listener: (value: any) => void): this;
+        removeListener(event: 'messageerror', listener: (error: Error) => void): this;
+        removeListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        off(event: 'close', listener: () => void): this;
+        off(event: 'message', listener: (value: any) => void): this;
+        off(event: 'messageerror', listener: (error: Error) => void): this;
+        off(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    interface WorkerOptions {
+        /**
+         * List of arguments which would be stringified and appended to
+         * `process.argv` in the worker. This is mostly similar to the `workerData`
+         * but the values will be available on the global `process.argv` as if they
+         * were passed as CLI options to the script.
+         */
+        argv?: any[] | undefined;
+        env?: NodeJS.Dict<string> | typeof SHARE_ENV | undefined;
+        eval?: boolean | undefined;
+        workerData?: any;
+        stdin?: boolean | undefined;
+        stdout?: boolean | undefined;
+        stderr?: boolean | undefined;
+        execArgv?: string[] | undefined;
+        resourceLimits?: ResourceLimits | undefined;
+        /**
+         * Additional data to send in the first worker message.
+         */
+        transferList?: TransferListItem[] | undefined;
+        /**
+         * @default true
+         */
+        trackUnmanagedFds?: boolean | undefined;
+    }
+    interface ResourceLimits {
+        /**
+         * The maximum size of a heap space for recently created objects.
+         */
+        maxYoungGenerationSizeMb?: number | undefined;
+        /**
+         * The maximum size of the main heap in MB.
+         */
+        maxOldGenerationSizeMb?: number | undefined;
+        /**
+         * The size of a pre-allocated memory range used for generated code.
+         */
+        codeRangeSizeMb?: number | undefined;
+        /**
+         * The default maximum stack size for the thread. Small values may lead to unusable Worker instances.
+         * @default 4
+         */
+        stackSizeMb?: number | undefined;
+    }
+    /**
+     * The `Worker` class represents an independent JavaScript execution thread.
+     * Most Node.js APIs are available inside of it.
+     *
+     * Notable differences inside a Worker environment are:
+     *
+     * * The `process.stdin`, `process.stdout` and `process.stderr` may be redirected by the parent thread.
+     * * The `require('worker_threads').isMainThread` property is set to `false`.
+     * * The `require('worker_threads').parentPort` message port is available.
+     * * `process.exit()` does not stop the whole program, just the single thread,
+     * and `process.abort()` is not available.
+     * * `process.chdir()` and `process` methods that set group or user ids
+     * are not available.
+     * * `process.env` is a copy of the parent thread's environment variables,
+     * unless otherwise specified. Changes to one copy are not visible in other
+     * threads, and are not visible to native add-ons (unless `worker.SHARE_ENV` is passed as the `env` option to the `Worker` constructor).
+     * * `process.title` cannot be modified.
+     * * Signals are not delivered through `process.on('...')`.
+     * * Execution may stop at any point as a result of `worker.terminate()` being invoked.
+     * * IPC channels from parent processes are not accessible.
+     * * The `trace_events` module is not supported.
+     * * Native add-ons can only be loaded from multiple threads if they fulfill `certain conditions`.
+     *
+     * Creating `Worker` instances inside of other `Worker`s is possible.
+     *
+     * Like [Web Workers](https://developer.mozilla.org/en-US/docs/Web/API/Web_Workers_API) and the `cluster module`, two-way communication can be
+     * achieved through inter-thread message passing. Internally, a `Worker` has a
+     * built-in pair of `MessagePort` s that are already associated with each other
+     * when the `Worker` is created. While the `MessagePort` object on the parent side
+     * is not directly exposed, its functionalities are exposed through `worker.postMessage()` and the `worker.on('message')` event
+     * on the `Worker` object for the parent thread.
+     *
+     * To create custom messaging channels (which is encouraged over using the default
+     * global channel because it facilitates separation of concerns), users can create
+     * a `MessageChannel` object on either thread and pass one of the`MessagePort`s on that `MessageChannel` to the other thread through a
+     * pre-existing channel, such as the global one.
+     *
+     * See `port.postMessage()` for more information on how messages are passed,
+     * and what kind of JavaScript values can be successfully transported through
+     * the thread barrier.
+     *
+     * ```js
+     * const assert = require('assert');
+     * const {
+     *   Worker, MessageChannel, MessagePort, isMainThread, parentPort
+     * } = require('worker_threads');
+     * if (isMainThread) {
+     *   const worker = new Worker(__filename);
+     *   const subChannel = new MessageChannel();
+     *   worker.postMessage({ hereIsYourPort: subChannel.port1 }, [subChannel.port1]);
+     *   subChannel.port2.on('message', (value) => {
+     *     console.log('received:', value);
+     *   });
+     * } else {
+     *   parentPort.once('message', (value) => {
+     *     assert(value.hereIsYourPort instanceof MessagePort);
+     *     value.hereIsYourPort.postMessage('the worker is sending this');
+     *     value.hereIsYourPort.close();
+     *   });
+     * }
+     * ```
+     * @since v10.5.0
+     */
+    class Worker extends EventEmitter {
+        /**
+         * If `stdin: true` was passed to the `Worker` constructor, this is a
+         * writable stream. The data written to this stream will be made available in
+         * the worker thread as `process.stdin`.
+         * @since v10.5.0
+         */
+        readonly stdin: Writable | null;
+        /**
+         * This is a readable stream which contains data written to `process.stdout` inside the worker thread. If `stdout: true` was not passed to the `Worker` constructor, then data is piped to the
+         * parent thread's `process.stdout` stream.
+         * @since v10.5.0
+         */
+        readonly stdout: Readable;
+        /**
+         * This is a readable stream which contains data written to `process.stderr` inside the worker thread. If `stderr: true` was not passed to the `Worker` constructor, then data is piped to the
+         * parent thread's `process.stderr` stream.
+         * @since v10.5.0
+         */
+        readonly stderr: Readable;
+        /**
+         * An integer identifier for the referenced thread. Inside the worker thread,
+         * it is available as `require('worker_threads').threadId`.
+         * This value is unique for each `Worker` instance inside a single process.
+         * @since v10.5.0
+         */
+        readonly threadId: number;
+        /**
+         * Provides the set of JS engine resource constraints for this Worker thread.
+         * If the `resourceLimits` option was passed to the `Worker` constructor,
+         * this matches its values.
+         *
+         * If the worker has stopped, the return value is an empty object.
+         * @since v13.2.0, v12.16.0
+         */
+        readonly resourceLimits?: ResourceLimits | undefined;
+        /**
+         * An object that can be used to query performance information from a worker
+         * instance. Similar to `perf_hooks.performance`.
+         * @since v15.1.0, v14.17.0, v12.22.0
+         */
+        readonly performance: WorkerPerformance;
+        /**
+         * @param filename  The path to the Worker’s main script or module.
+         *                  Must be either an absolute path or a relative path (i.e. relative to the current working directory) starting with ./ or ../,
+         *                  or a WHATWG URL object using file: protocol. If options.eval is true, this is a string containing JavaScript code rather than a path.
+         */
+        constructor(filename: string | URL, options?: WorkerOptions);
+        /**
+         * Send a message to the worker that is received via `require('worker_threads').parentPort.on('message')`.
+         * See `port.postMessage()` for more details.
+         * @since v10.5.0
+         */
+        postMessage(value: any, transferList?: ReadonlyArray<TransferListItem>): void;
+        /**
+         * Opposite of `unref()`, calling `ref()` on a previously `unref()`ed worker does _not_ let the program exit if it's the only active handle left (the default
+         * behavior). If the worker is `ref()`ed, calling `ref()` again has
+         * no effect.
+         * @since v10.5.0
+         */
+        ref(): void;
+        /**
+         * Calling `unref()` on a worker allows the thread to exit if this is the only
+         * active handle in the event system. If the worker is already `unref()`ed calling`unref()` again has no effect.
+         * @since v10.5.0
+         */
+        unref(): void;
+        /**
+         * Stop all JavaScript execution in the worker thread as soon as possible.
+         * Returns a Promise for the exit code that is fulfilled when the `'exit' event` is emitted.
+         * @since v10.5.0
+         */
+        terminate(): Promise<number>;
+        /**
+         * Returns a readable stream for a V8 snapshot of the current state of the Worker.
+         * See `v8.getHeapSnapshot()` for more details.
+         *
+         * If the Worker thread is no longer running, which may occur before the `'exit' event` is emitted, the returned `Promise` is rejected
+         * immediately with an `ERR_WORKER_NOT_RUNNING` error.
+         * @since v13.9.0, v12.17.0
+         * @return A promise for a Readable Stream containing a V8 heap snapshot
+         */
+        getHeapSnapshot(): Promise<Readable>;
+        addListener(event: 'error', listener: (err: Error) => void): this;
+        addListener(event: 'exit', listener: (exitCode: number) => void): this;
+        addListener(event: 'message', listener: (value: any) => void): this;
+        addListener(event: 'messageerror', listener: (error: Error) => void): this;
+        addListener(event: 'online', listener: () => void): this;
+        addListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        emit(event: 'error', err: Error): boolean;
+        emit(event: 'exit', exitCode: number): boolean;
+        emit(event: 'message', value: any): boolean;
+        emit(event: 'messageerror', error: Error): boolean;
+        emit(event: 'online'): boolean;
+        emit(event: string | symbol, ...args: any[]): boolean;
+        on(event: 'error', listener: (err: Error) => void): this;
+        on(event: 'exit', listener: (exitCode: number) => void): this;
+        on(event: 'message', listener: (value: any) => void): this;
+        on(event: 'messageerror', listener: (error: Error) => void): this;
+        on(event: 'online', listener: () => void): this;
+        on(event: string | symbol, listener: (...args: any[]) => void): this;
+        once(event: 'error', listener: (err: Error) => void): this;
+        once(event: 'exit', listener: (exitCode: number) => void): this;
+        once(event: 'message', listener: (value: any) => void): this;
+        once(event: 'messageerror', listener: (error: Error) => void): this;
+        once(event: 'online', listener: () => void): this;
+        once(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependListener(event: 'error', listener: (err: Error) => void): this;
+        prependListener(event: 'exit', listener: (exitCode: number) => void): this;
+        prependListener(event: 'message', listener: (value: any) => void): this;
+        prependListener(event: 'messageerror', listener: (error: Error) => void): this;
+        prependListener(event: 'online', listener: () => void): this;
+        prependListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        prependOnceListener(event: 'error', listener: (err: Error) => void): this;
+        prependOnceListener(event: 'exit', listener: (exitCode: number) => void): this;
+        prependOnceListener(event: 'message', listener: (value: any) => void): this;
+        prependOnceListener(event: 'messageerror', listener: (error: Error) => void): this;
+        prependOnceListener(event: 'online', listener: () => void): this;
+        prependOnceListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        removeListener(event: 'error', listener: (err: Error) => void): this;
+        removeListener(event: 'exit', listener: (exitCode: number) => void): this;
+        removeListener(event: 'message', listener: (value: any) => void): this;
+        removeListener(event: 'messageerror', listener: (error: Error) => void): this;
+        removeListener(event: 'online', listener: () => void): this;
+        removeListener(event: string | symbol, listener: (...args: any[]) => void): this;
+        off(event: 'error', listener: (err: Error) => void): this;
+        off(event: 'exit', listener: (exitCode: number) => void): this;
+        off(event: 'message', listener: (value: any) => void): this;
+        off(event: 'messageerror', listener: (error: Error) => void): this;
+        off(event: 'online', listener: () => void): this;
+        off(event: string | symbol, listener: (...args: any[]) => void): this;
+    }
+    interface BroadcastChannel extends NodeJS.RefCounted {}
+    /**
+     * Instances of `BroadcastChannel` allow asynchronous one-to-many communication
+     * with all other `BroadcastChannel` instances bound to the same channel name.
+     *
+     * ```js
+     * 'use strict';
+     *
+     * const {
+     *   isMainThread,
+     *   BroadcastChannel,
+     *   Worker
+     * } = require('worker_threads');
+     *
+     * const bc = new BroadcastChannel('hello');
+     *
+     * if (isMainThread) {
+     *   let c = 0;
+     *   bc.onmessage = (event) => {
+     *     console.log(event.data);
+     *     if (++c === 10) bc.close();
+     *   };
+     *   for (let n = 0; n < 10; n++)
+     *     new Worker(__filename);
+     * } else {
+     *   bc.postMessage('hello from every worker');
+     *   bc.close();
+     * }
+     * ```
+     * @since v15.4.0
+     */
+    class BroadcastChannel {
+        readonly name: string;
+        /**
+         * Invoked with a single \`MessageEvent\` argument when a message is received.
+         * @since v15.4.0
+         */
+        onmessage: (message: unknown) => void;
+        /**
+         * Invoked with a received message cannot be deserialized.
+         * @since v15.4.0
+         */
+        onmessageerror: (message: unknown) => void;
+        constructor(name: string);
+        /**
+         * Closes the `BroadcastChannel` connection.
+         * @since v15.4.0
+         */
+        close(): void;
+        /**
+         * @since v15.4.0
+         * @param message Any cloneable JavaScript value.
+         */
+        postMessage(message: unknown): void;
+    }
+    /**
+     * Mark an object as not transferable. If `object` occurs in the transfer list of
+     * a `port.postMessage()` call, it is ignored.
+     *
+     * In particular, this makes sense for objects that can be cloned, rather than
+     * transferred, and which are used by other objects on the sending side.
+     * For example, Node.js marks the `ArrayBuffer`s it uses for its `Buffer pool` with this.
+     *
+     * This operation cannot be undone.
+     *
+     * ```js
+     * const { MessageChannel, markAsUntransferable } = require('worker_threads');
+     *
+     * const pooledBuffer = new ArrayBuffer(8);
+     * const typedArray1 = new Uint8Array(pooledBuffer);
+     * const typedArray2 = new Float64Array(pooledBuffer);
+     *
+     * markAsUntransferable(pooledBuffer);
+     *
+     * const { port1 } = new MessageChannel();
+     * port1.postMessage(typedArray1, [ typedArray1.buffer ]);
+     *
+     * // The following line prints the contents of typedArray1 -- it still owns
+     * // its memory and has been cloned, not transferred. Without
+     * // `markAsUntransferable()`, this would print an empty Uint8Array.
+     * // typedArray2 is intact as well.
+     * console.log(typedArray1);
+     * console.log(typedArray2);
+     * ```
+     *
+     * There is no equivalent to this API in browsers.
+     * @since v14.5.0, v12.19.0
+     */
+    function markAsUntransferable(object: object): void;
+    /**
+     * Transfer a `MessagePort` to a different `vm` Context. The original `port`object is rendered unusable, and the returned `MessagePort` instance
+     * takes its place.
+     *
+     * The returned `MessagePort` is an object in the target context and
+     * inherits from its global `Object` class. Objects passed to the [`port.onmessage()`](https://developer.mozilla.org/en-US/docs/Web/API/MessagePort/onmessage) listener are also created in the
+     * target context
+     * and inherit from its global `Object` class.
+     *
+     * However, the created `MessagePort` no longer inherits from [`EventTarget`](https://developer.mozilla.org/en-US/docs/Web/API/EventTarget), and only
+     * [`port.onmessage()`](https://developer.mozilla.org/en-US/docs/Web/API/MessagePort/onmessage) can be used to receive
+     * events using it.
+     * @since v11.13.0
+     * @param port The message port to transfer.
+     * @param contextifiedSandbox A `contextified` object as returned by the `vm.createContext()` method.
+     */
+    function moveMessagePortToContext(port: MessagePort, contextifiedSandbox: Context): MessagePort;
+    /**
+     * Receive a single message from a given `MessagePort`. If no message is available,`undefined` is returned, otherwise an object with a single `message` property
+     * that contains the message payload, corresponding to the oldest message in the`MessagePort`’s queue.
+     *
+     * ```js
+     * const { MessageChannel, receiveMessageOnPort } = require('worker_threads');
+     * const { port1, port2 } = new MessageChannel();
+     * port1.postMessage({ hello: 'world' });
+     *
+     * console.log(receiveMessageOnPort(port2));
+     * // Prints: { message: { hello: 'world' } }
+     * console.log(receiveMessageOnPort(port2));
+     * // Prints: undefined
+     * ```
+     *
+     * When this function is used, no `'message'` event is emitted and the`onmessage` listener is not invoked.
+     * @since v12.3.0
+     */
+    function receiveMessageOnPort(port: MessagePort):
+        | {
+              message: any;
+          }
+        | undefined;
+    type Serializable = string | object | number | boolean | bigint;
+    /**
+     * Within a worker thread, `worker.getEnvironmentData()` returns a clone
+     * of data passed to the spawning thread's `worker.setEnvironmentData()`.
+     * Every new `Worker` receives its own copy of the environment data
+     * automatically.
+     *
+     * ```js
+     * const {
+     *   Worker,
+     *   isMainThread,
+     *   setEnvironmentData,
+     *   getEnvironmentData,
+     * } = require('worker_threads');
+     *
+     * if (isMainThread) {
+     *   setEnvironmentData('Hello', 'World!');
+     *   const worker = new Worker(__filename);
+     * } else {
+     *   console.log(getEnvironmentData('Hello'));  // Prints 'World!'.
+     * }
+     * ```
+     * @since v15.12.0, v14.18.0
+     * @param key Any arbitrary, cloneable JavaScript value that can be used as a {Map} key.
+     */
+    function getEnvironmentData(key: Serializable): Serializable;
+    /**
+     * The `worker.setEnvironmentData()` API sets the content of`worker.getEnvironmentData()` in the current thread and all new `Worker`instances spawned from the current context.
+     * @since v15.12.0, v14.18.0
+     * @param key Any arbitrary, cloneable JavaScript value that can be used as a {Map} key.
+     * @param value Any arbitrary, cloneable JavaScript value that will be cloned and passed automatically to all new `Worker` instances. If `value` is passed as `undefined`, any previously set value
+     * for the `key` will be deleted.
+     */
+    function setEnvironmentData(key: Serializable, value: Serializable): void;
+}
+declare module 'node:worker_threads' {
+    export * from 'worker_threads';
+}
diff --git a/igv_component/node_modules/@types/node/zlib.d.ts b/igv_component/node_modules/@types/node/zlib.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..1d7f0c0e507405e9584cd7158cbbea92234afa84
--- /dev/null
+++ b/igv_component/node_modules/@types/node/zlib.d.ts
@@ -0,0 +1,517 @@
+/**
+ * The `zlib` module provides compression functionality implemented using Gzip,
+ * Deflate/Inflate, and Brotli.
+ *
+ * To access it:
+ *
+ * ```js
+ * const zlib = require('zlib');
+ * ```
+ *
+ * Compression and decompression are built around the Node.js `Streams API`.
+ *
+ * Compressing or decompressing a stream (such as a file) can be accomplished by
+ * piping the source stream through a `zlib` `Transform` stream into a destination
+ * stream:
+ *
+ * ```js
+ * const { createGzip } = require('zlib');
+ * const { pipeline } = require('stream');
+ * const {
+ *   createReadStream,
+ *   createWriteStream
+ * } = require('fs');
+ *
+ * const gzip = createGzip();
+ * const source = createReadStream('input.txt');
+ * const destination = createWriteStream('input.txt.gz');
+ *
+ * pipeline(source, gzip, destination, (err) => {
+ *   if (err) {
+ *     console.error('An error occurred:', err);
+ *     process.exitCode = 1;
+ *   }
+ * });
+ *
+ * // Or, Promisified
+ *
+ * const { promisify } = require('util');
+ * const pipe = promisify(pipeline);
+ *
+ * async function do_gzip(input, output) {
+ *   const gzip = createGzip();
+ *   const source = createReadStream(input);
+ *   const destination = createWriteStream(output);
+ *   await pipe(source, gzip, destination);
+ * }
+ *
+ * do_gzip('input.txt', 'input.txt.gz')
+ *   .catch((err) => {
+ *     console.error('An error occurred:', err);
+ *     process.exitCode = 1;
+ *   });
+ * ```
+ *
+ * It is also possible to compress or decompress data in a single step:
+ *
+ * ```js
+ * const { deflate, unzip } = require('zlib');
+ *
+ * const input = '.................................';
+ * deflate(input, (err, buffer) => {
+ *   if (err) {
+ *     console.error('An error occurred:', err);
+ *     process.exitCode = 1;
+ *   }
+ *   console.log(buffer.toString('base64'));
+ * });
+ *
+ * const buffer = Buffer.from('eJzT0yMAAGTvBe8=', 'base64');
+ * unzip(buffer, (err, buffer) => {
+ *   if (err) {
+ *     console.error('An error occurred:', err);
+ *     process.exitCode = 1;
+ *   }
+ *   console.log(buffer.toString());
+ * });
+ *
+ * // Or, Promisified
+ *
+ * const { promisify } = require('util');
+ * const do_unzip = promisify(unzip);
+ *
+ * do_unzip(buffer)
+ *   .then((buf) => console.log(buf.toString()))
+ *   .catch((err) => {
+ *     console.error('An error occurred:', err);
+ *     process.exitCode = 1;
+ *   });
+ * ```
+ * @since v0.5.8
+ * @see [source](https://github.com/nodejs/node/blob/v18.0.0/lib/zlib.js)
+ */
+declare module 'zlib' {
+    import * as stream from 'node:stream';
+    interface ZlibOptions {
+        /**
+         * @default constants.Z_NO_FLUSH
+         */
+        flush?: number | undefined;
+        /**
+         * @default constants.Z_FINISH
+         */
+        finishFlush?: number | undefined;
+        /**
+         * @default 16*1024
+         */
+        chunkSize?: number | undefined;
+        windowBits?: number | undefined;
+        level?: number | undefined; // compression only
+        memLevel?: number | undefined; // compression only
+        strategy?: number | undefined; // compression only
+        dictionary?: NodeJS.ArrayBufferView | ArrayBuffer | undefined; // deflate/inflate only, empty dictionary by default
+        info?: boolean | undefined;
+        maxOutputLength?: number | undefined;
+    }
+    interface BrotliOptions {
+        /**
+         * @default constants.BROTLI_OPERATION_PROCESS
+         */
+        flush?: number | undefined;
+        /**
+         * @default constants.BROTLI_OPERATION_FINISH
+         */
+        finishFlush?: number | undefined;
+        /**
+         * @default 16*1024
+         */
+        chunkSize?: number | undefined;
+        params?:
+            | {
+                  /**
+                   * Each key is a `constants.BROTLI_*` constant.
+                   */
+                  [key: number]: boolean | number;
+              }
+            | undefined;
+        maxOutputLength?: number | undefined;
+    }
+    interface Zlib {
+        /** @deprecated Use bytesWritten instead. */
+        readonly bytesRead: number;
+        readonly bytesWritten: number;
+        shell?: boolean | string | undefined;
+        close(callback?: () => void): void;
+        flush(kind?: number, callback?: () => void): void;
+        flush(callback?: () => void): void;
+    }
+    interface ZlibParams {
+        params(level: number, strategy: number, callback: () => void): void;
+    }
+    interface ZlibReset {
+        reset(): void;
+    }
+    interface BrotliCompress extends stream.Transform, Zlib {}
+    interface BrotliDecompress extends stream.Transform, Zlib {}
+    interface Gzip extends stream.Transform, Zlib {}
+    interface Gunzip extends stream.Transform, Zlib {}
+    interface Deflate extends stream.Transform, Zlib, ZlibReset, ZlibParams {}
+    interface Inflate extends stream.Transform, Zlib, ZlibReset {}
+    interface DeflateRaw extends stream.Transform, Zlib, ZlibReset, ZlibParams {}
+    interface InflateRaw extends stream.Transform, Zlib, ZlibReset {}
+    interface Unzip extends stream.Transform, Zlib {}
+    /**
+     * Creates and returns a new `BrotliCompress` object.
+     * @since v11.7.0, v10.16.0
+     */
+    function createBrotliCompress(options?: BrotliOptions): BrotliCompress;
+    /**
+     * Creates and returns a new `BrotliDecompress` object.
+     * @since v11.7.0, v10.16.0
+     */
+    function createBrotliDecompress(options?: BrotliOptions): BrotliDecompress;
+    /**
+     * Creates and returns a new `Gzip` object.
+     * See `example`.
+     * @since v0.5.8
+     */
+    function createGzip(options?: ZlibOptions): Gzip;
+    /**
+     * Creates and returns a new `Gunzip` object.
+     * @since v0.5.8
+     */
+    function createGunzip(options?: ZlibOptions): Gunzip;
+    /**
+     * Creates and returns a new `Deflate` object.
+     * @since v0.5.8
+     */
+    function createDeflate(options?: ZlibOptions): Deflate;
+    /**
+     * Creates and returns a new `Inflate` object.
+     * @since v0.5.8
+     */
+    function createInflate(options?: ZlibOptions): Inflate;
+    /**
+     * Creates and returns a new `DeflateRaw` object.
+     *
+     * An upgrade of zlib from 1.2.8 to 1.2.11 changed behavior when `windowBits`is set to 8 for raw deflate streams. zlib would automatically set `windowBits`to 9 if was initially set to 8\. Newer
+     * versions of zlib will throw an exception,
+     * so Node.js restored the original behavior of upgrading a value of 8 to 9,
+     * since passing `windowBits = 9` to zlib actually results in a compressed stream
+     * that effectively uses an 8-bit window only.
+     * @since v0.5.8
+     */
+    function createDeflateRaw(options?: ZlibOptions): DeflateRaw;
+    /**
+     * Creates and returns a new `InflateRaw` object.
+     * @since v0.5.8
+     */
+    function createInflateRaw(options?: ZlibOptions): InflateRaw;
+    /**
+     * Creates and returns a new `Unzip` object.
+     * @since v0.5.8
+     */
+    function createUnzip(options?: ZlibOptions): Unzip;
+    type InputType = string | ArrayBuffer | NodeJS.ArrayBufferView;
+    type CompressCallback = (error: Error | null, result: Buffer) => void;
+    /**
+     * @since v11.7.0, v10.16.0
+     */
+    function brotliCompress(buf: InputType, options: BrotliOptions, callback: CompressCallback): void;
+    function brotliCompress(buf: InputType, callback: CompressCallback): void;
+    namespace brotliCompress {
+        function __promisify__(buffer: InputType, options?: BrotliOptions): Promise<Buffer>;
+    }
+    /**
+     * Compress a chunk of data with `BrotliCompress`.
+     * @since v11.7.0, v10.16.0
+     */
+    function brotliCompressSync(buf: InputType, options?: BrotliOptions): Buffer;
+    /**
+     * @since v11.7.0, v10.16.0
+     */
+    function brotliDecompress(buf: InputType, options: BrotliOptions, callback: CompressCallback): void;
+    function brotliDecompress(buf: InputType, callback: CompressCallback): void;
+    namespace brotliDecompress {
+        function __promisify__(buffer: InputType, options?: BrotliOptions): Promise<Buffer>;
+    }
+    /**
+     * Decompress a chunk of data with `BrotliDecompress`.
+     * @since v11.7.0, v10.16.0
+     */
+    function brotliDecompressSync(buf: InputType, options?: BrotliOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function deflate(buf: InputType, callback: CompressCallback): void;
+    function deflate(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace deflate {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Compress a chunk of data with `Deflate`.
+     * @since v0.11.12
+     */
+    function deflateSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function deflateRaw(buf: InputType, callback: CompressCallback): void;
+    function deflateRaw(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace deflateRaw {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Compress a chunk of data with `DeflateRaw`.
+     * @since v0.11.12
+     */
+    function deflateRawSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function gzip(buf: InputType, callback: CompressCallback): void;
+    function gzip(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace gzip {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Compress a chunk of data with `Gzip`.
+     * @since v0.11.12
+     */
+    function gzipSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function gunzip(buf: InputType, callback: CompressCallback): void;
+    function gunzip(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace gunzip {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Decompress a chunk of data with `Gunzip`.
+     * @since v0.11.12
+     */
+    function gunzipSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function inflate(buf: InputType, callback: CompressCallback): void;
+    function inflate(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace inflate {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Decompress a chunk of data with `Inflate`.
+     * @since v0.11.12
+     */
+    function inflateSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function inflateRaw(buf: InputType, callback: CompressCallback): void;
+    function inflateRaw(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace inflateRaw {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Decompress a chunk of data with `InflateRaw`.
+     * @since v0.11.12
+     */
+    function inflateRawSync(buf: InputType, options?: ZlibOptions): Buffer;
+    /**
+     * @since v0.6.0
+     */
+    function unzip(buf: InputType, callback: CompressCallback): void;
+    function unzip(buf: InputType, options: ZlibOptions, callback: CompressCallback): void;
+    namespace unzip {
+        function __promisify__(buffer: InputType, options?: ZlibOptions): Promise<Buffer>;
+    }
+    /**
+     * Decompress a chunk of data with `Unzip`.
+     * @since v0.11.12
+     */
+    function unzipSync(buf: InputType, options?: ZlibOptions): Buffer;
+    namespace constants {
+        const BROTLI_DECODE: number;
+        const BROTLI_DECODER_ERROR_ALLOC_BLOCK_TYPE_TREES: number;
+        const BROTLI_DECODER_ERROR_ALLOC_CONTEXT_MAP: number;
+        const BROTLI_DECODER_ERROR_ALLOC_CONTEXT_MODES: number;
+        const BROTLI_DECODER_ERROR_ALLOC_RING_BUFFER_1: number;
+        const BROTLI_DECODER_ERROR_ALLOC_RING_BUFFER_2: number;
+        const BROTLI_DECODER_ERROR_ALLOC_TREE_GROUPS: number;
+        const BROTLI_DECODER_ERROR_DICTIONARY_NOT_SET: number;
+        const BROTLI_DECODER_ERROR_FORMAT_BLOCK_LENGTH_1: number;
+        const BROTLI_DECODER_ERROR_FORMAT_BLOCK_LENGTH_2: number;
+        const BROTLI_DECODER_ERROR_FORMAT_CL_SPACE: number;
+        const BROTLI_DECODER_ERROR_FORMAT_CONTEXT_MAP_REPEAT: number;
+        const BROTLI_DECODER_ERROR_FORMAT_DICTIONARY: number;
+        const BROTLI_DECODER_ERROR_FORMAT_DISTANCE: number;
+        const BROTLI_DECODER_ERROR_FORMAT_EXUBERANT_META_NIBBLE: number;
+        const BROTLI_DECODER_ERROR_FORMAT_EXUBERANT_NIBBLE: number;
+        const BROTLI_DECODER_ERROR_FORMAT_HUFFMAN_SPACE: number;
+        const BROTLI_DECODER_ERROR_FORMAT_PADDING_1: number;
+        const BROTLI_DECODER_ERROR_FORMAT_PADDING_2: number;
+        const BROTLI_DECODER_ERROR_FORMAT_RESERVED: number;
+        const BROTLI_DECODER_ERROR_FORMAT_SIMPLE_HUFFMAN_ALPHABET: number;
+        const BROTLI_DECODER_ERROR_FORMAT_SIMPLE_HUFFMAN_SAME: number;
+        const BROTLI_DECODER_ERROR_FORMAT_TRANSFORM: number;
+        const BROTLI_DECODER_ERROR_FORMAT_WINDOW_BITS: number;
+        const BROTLI_DECODER_ERROR_INVALID_ARGUMENTS: number;
+        const BROTLI_DECODER_ERROR_UNREACHABLE: number;
+        const BROTLI_DECODER_NEEDS_MORE_INPUT: number;
+        const BROTLI_DECODER_NEEDS_MORE_OUTPUT: number;
+        const BROTLI_DECODER_NO_ERROR: number;
+        const BROTLI_DECODER_PARAM_DISABLE_RING_BUFFER_REALLOCATION: number;
+        const BROTLI_DECODER_PARAM_LARGE_WINDOW: number;
+        const BROTLI_DECODER_RESULT_ERROR: number;
+        const BROTLI_DECODER_RESULT_NEEDS_MORE_INPUT: number;
+        const BROTLI_DECODER_RESULT_NEEDS_MORE_OUTPUT: number;
+        const BROTLI_DECODER_RESULT_SUCCESS: number;
+        const BROTLI_DECODER_SUCCESS: number;
+        const BROTLI_DEFAULT_MODE: number;
+        const BROTLI_DEFAULT_QUALITY: number;
+        const BROTLI_DEFAULT_WINDOW: number;
+        const BROTLI_ENCODE: number;
+        const BROTLI_LARGE_MAX_WINDOW_BITS: number;
+        const BROTLI_MAX_INPUT_BLOCK_BITS: number;
+        const BROTLI_MAX_QUALITY: number;
+        const BROTLI_MAX_WINDOW_BITS: number;
+        const BROTLI_MIN_INPUT_BLOCK_BITS: number;
+        const BROTLI_MIN_QUALITY: number;
+        const BROTLI_MIN_WINDOW_BITS: number;
+        const BROTLI_MODE_FONT: number;
+        const BROTLI_MODE_GENERIC: number;
+        const BROTLI_MODE_TEXT: number;
+        const BROTLI_OPERATION_EMIT_METADATA: number;
+        const BROTLI_OPERATION_FINISH: number;
+        const BROTLI_OPERATION_FLUSH: number;
+        const BROTLI_OPERATION_PROCESS: number;
+        const BROTLI_PARAM_DISABLE_LITERAL_CONTEXT_MODELING: number;
+        const BROTLI_PARAM_LARGE_WINDOW: number;
+        const BROTLI_PARAM_LGBLOCK: number;
+        const BROTLI_PARAM_LGWIN: number;
+        const BROTLI_PARAM_MODE: number;
+        const BROTLI_PARAM_NDIRECT: number;
+        const BROTLI_PARAM_NPOSTFIX: number;
+        const BROTLI_PARAM_QUALITY: number;
+        const BROTLI_PARAM_SIZE_HINT: number;
+        const DEFLATE: number;
+        const DEFLATERAW: number;
+        const GUNZIP: number;
+        const GZIP: number;
+        const INFLATE: number;
+        const INFLATERAW: number;
+        const UNZIP: number;
+        // Allowed flush values.
+        const Z_NO_FLUSH: number;
+        const Z_PARTIAL_FLUSH: number;
+        const Z_SYNC_FLUSH: number;
+        const Z_FULL_FLUSH: number;
+        const Z_FINISH: number;
+        const Z_BLOCK: number;
+        const Z_TREES: number;
+        // Return codes for the compression/decompression functions.
+        // Negative values are errors, positive values are used for special but normal events.
+        const Z_OK: number;
+        const Z_STREAM_END: number;
+        const Z_NEED_DICT: number;
+        const Z_ERRNO: number;
+        const Z_STREAM_ERROR: number;
+        const Z_DATA_ERROR: number;
+        const Z_MEM_ERROR: number;
+        const Z_BUF_ERROR: number;
+        const Z_VERSION_ERROR: number;
+        // Compression levels.
+        const Z_NO_COMPRESSION: number;
+        const Z_BEST_SPEED: number;
+        const Z_BEST_COMPRESSION: number;
+        const Z_DEFAULT_COMPRESSION: number;
+        // Compression strategy.
+        const Z_FILTERED: number;
+        const Z_HUFFMAN_ONLY: number;
+        const Z_RLE: number;
+        const Z_FIXED: number;
+        const Z_DEFAULT_STRATEGY: number;
+        const Z_DEFAULT_WINDOWBITS: number;
+        const Z_MIN_WINDOWBITS: number;
+        const Z_MAX_WINDOWBITS: number;
+        const Z_MIN_CHUNK: number;
+        const Z_MAX_CHUNK: number;
+        const Z_DEFAULT_CHUNK: number;
+        const Z_MIN_MEMLEVEL: number;
+        const Z_MAX_MEMLEVEL: number;
+        const Z_DEFAULT_MEMLEVEL: number;
+        const Z_MIN_LEVEL: number;
+        const Z_MAX_LEVEL: number;
+        const Z_DEFAULT_LEVEL: number;
+        const ZLIB_VERNUM: number;
+    }
+    // Allowed flush values.
+    /** @deprecated Use `constants.Z_NO_FLUSH` */
+    const Z_NO_FLUSH: number;
+    /** @deprecated Use `constants.Z_PARTIAL_FLUSH` */
+    const Z_PARTIAL_FLUSH: number;
+    /** @deprecated Use `constants.Z_SYNC_FLUSH` */
+    const Z_SYNC_FLUSH: number;
+    /** @deprecated Use `constants.Z_FULL_FLUSH` */
+    const Z_FULL_FLUSH: number;
+    /** @deprecated Use `constants.Z_FINISH` */
+    const Z_FINISH: number;
+    /** @deprecated Use `constants.Z_BLOCK` */
+    const Z_BLOCK: number;
+    /** @deprecated Use `constants.Z_TREES` */
+    const Z_TREES: number;
+    // Return codes for the compression/decompression functions.
+    // Negative values are errors, positive values are used for special but normal events.
+    /** @deprecated Use `constants.Z_OK` */
+    const Z_OK: number;
+    /** @deprecated Use `constants.Z_STREAM_END` */
+    const Z_STREAM_END: number;
+    /** @deprecated Use `constants.Z_NEED_DICT` */
+    const Z_NEED_DICT: number;
+    /** @deprecated Use `constants.Z_ERRNO` */
+    const Z_ERRNO: number;
+    /** @deprecated Use `constants.Z_STREAM_ERROR` */
+    const Z_STREAM_ERROR: number;
+    /** @deprecated Use `constants.Z_DATA_ERROR` */
+    const Z_DATA_ERROR: number;
+    /** @deprecated Use `constants.Z_MEM_ERROR` */
+    const Z_MEM_ERROR: number;
+    /** @deprecated Use `constants.Z_BUF_ERROR` */
+    const Z_BUF_ERROR: number;
+    /** @deprecated Use `constants.Z_VERSION_ERROR` */
+    const Z_VERSION_ERROR: number;
+    // Compression levels.
+    /** @deprecated Use `constants.Z_NO_COMPRESSION` */
+    const Z_NO_COMPRESSION: number;
+    /** @deprecated Use `constants.Z_BEST_SPEED` */
+    const Z_BEST_SPEED: number;
+    /** @deprecated Use `constants.Z_BEST_COMPRESSION` */
+    const Z_BEST_COMPRESSION: number;
+    /** @deprecated Use `constants.Z_DEFAULT_COMPRESSION` */
+    const Z_DEFAULT_COMPRESSION: number;
+    // Compression strategy.
+    /** @deprecated Use `constants.Z_FILTERED` */
+    const Z_FILTERED: number;
+    /** @deprecated Use `constants.Z_HUFFMAN_ONLY` */
+    const Z_HUFFMAN_ONLY: number;
+    /** @deprecated Use `constants.Z_RLE` */
+    const Z_RLE: number;
+    /** @deprecated Use `constants.Z_FIXED` */
+    const Z_FIXED: number;
+    /** @deprecated Use `constants.Z_DEFAULT_STRATEGY` */
+    const Z_DEFAULT_STRATEGY: number;
+    /** @deprecated */
+    const Z_BINARY: number;
+    /** @deprecated */
+    const Z_TEXT: number;
+    /** @deprecated */
+    const Z_ASCII: number;
+    /** @deprecated  */
+    const Z_UNKNOWN: number;
+    /** @deprecated */
+    const Z_DEFLATED: number;
+}
+declare module 'node:zlib' {
+    export * from 'zlib';
+}
diff --git a/igv_component/node_modules/@types/pad-left/LICENSE b/igv_component/node_modules/@types/pad-left/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..9e841e7a26e4eb057b24511e7b92d42b257a80e5
--- /dev/null
+++ b/igv_component/node_modules/@types/pad-left/LICENSE
@@ -0,0 +1,21 @@
+    MIT License
+
+    Copyright (c) Microsoft Corporation.
+
+    Permission is hereby granted, free of charge, to any person obtaining a copy
+    of this software and associated documentation files (the "Software"), to deal
+    in the Software without restriction, including without limitation the rights
+    to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    copies of the Software, and to permit persons to whom the Software is
+    furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included in all
+    copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+    SOFTWARE
diff --git a/igv_component/node_modules/@types/pad-left/README.md b/igv_component/node_modules/@types/pad-left/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..ff9382806d53cbd080194ee184866bed4b9d35fd
--- /dev/null
+++ b/igv_component/node_modules/@types/pad-left/README.md
@@ -0,0 +1,28 @@
+# Installation
+> `npm install --save @types/pad-left`
+
+# Summary
+This package contains type definitions for pad-left (https://github.com/jonschlinkert/pad-left).
+
+# Details
+Files were exported from https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/pad-left.
+## [index.d.ts](https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/pad-left/index.d.ts)
+````ts
+// Type definitions for pad-left 2.1
+// Project: https://github.com/jonschlinkert/pad-left
+// Definitions by: Richie Bendall <https://github.com/Richienb>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare function padLeft(str: string, num?: number, ch?: string): string;
+
+export = padLeft;
+
+````
+
+### Additional Details
+ * Last updated: Tue, 13 Jul 2021 04:01:16 GMT
+ * Dependencies: none
+ * Global values: none
+
+# Credits
+These definitions were written by [Richie Bendall](https://github.com/Richienb).
diff --git a/igv_component/node_modules/@types/pad-left/index.d.ts b/igv_component/node_modules/@types/pad-left/index.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..791b8edc76862eb7b0af7fffea4c3376ff4a0f0d
--- /dev/null
+++ b/igv_component/node_modules/@types/pad-left/index.d.ts
@@ -0,0 +1,8 @@
+// Type definitions for pad-left 2.1
+// Project: https://github.com/jonschlinkert/pad-left
+// Definitions by: Richie Bendall <https://github.com/Richienb>
+// Definitions: https://github.com/DefinitelyTyped/DefinitelyTyped
+
+declare function padLeft(str: string, num?: number, ch?: string): string;
+
+export = padLeft;
diff --git a/igv_component/node_modules/@types/pad-left/package.json b/igv_component/node_modules/@types/pad-left/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..1ebebc14d5eaa0ff24b091f59c3cbbc14da4c0d7
--- /dev/null
+++ b/igv_component/node_modules/@types/pad-left/package.json
@@ -0,0 +1,25 @@
+{
+    "name": "@types/pad-left",
+    "version": "2.1.1",
+    "description": "TypeScript definitions for pad-left",
+    "homepage": "https://github.com/DefinitelyTyped/DefinitelyTyped/tree/master/types/pad-left",
+    "license": "MIT",
+    "contributors": [
+        {
+            "name": "Richie Bendall",
+            "url": "https://github.com/Richienb",
+            "githubUsername": "Richienb"
+        }
+    ],
+    "main": "",
+    "types": "index.d.ts",
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/DefinitelyTyped/DefinitelyTyped.git",
+        "directory": "types/pad-left"
+    },
+    "scripts": {},
+    "dependencies": {},
+    "typesPublisherContentHash": "902fd767280da4f894e471c7e0c8ee514908212de4859ecb23dc6c06690f74b4",
+    "typeScriptVersion": "3.6"
+}
\ No newline at end of file
diff --git a/igv_component/node_modules/ansi-styles/index.js b/igv_component/node_modules/ansi-styles/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..90a871c4d78f6f588a3a477d36f4352922989fa6
--- /dev/null
+++ b/igv_component/node_modules/ansi-styles/index.js
@@ -0,0 +1,165 @@
+'use strict';
+const colorConvert = require('color-convert');
+
+const wrapAnsi16 = (fn, offset) => function () {
+	const code = fn.apply(colorConvert, arguments);
+	return `\u001B[${code + offset}m`;
+};
+
+const wrapAnsi256 = (fn, offset) => function () {
+	const code = fn.apply(colorConvert, arguments);
+	return `\u001B[${38 + offset};5;${code}m`;
+};
+
+const wrapAnsi16m = (fn, offset) => function () {
+	const rgb = fn.apply(colorConvert, arguments);
+	return `\u001B[${38 + offset};2;${rgb[0]};${rgb[1]};${rgb[2]}m`;
+};
+
+function assembleStyles() {
+	const codes = new Map();
+	const styles = {
+		modifier: {
+			reset: [0, 0],
+			// 21 isn't widely supported and 22 does the same thing
+			bold: [1, 22],
+			dim: [2, 22],
+			italic: [3, 23],
+			underline: [4, 24],
+			inverse: [7, 27],
+			hidden: [8, 28],
+			strikethrough: [9, 29]
+		},
+		color: {
+			black: [30, 39],
+			red: [31, 39],
+			green: [32, 39],
+			yellow: [33, 39],
+			blue: [34, 39],
+			magenta: [35, 39],
+			cyan: [36, 39],
+			white: [37, 39],
+			gray: [90, 39],
+
+			// Bright color
+			redBright: [91, 39],
+			greenBright: [92, 39],
+			yellowBright: [93, 39],
+			blueBright: [94, 39],
+			magentaBright: [95, 39],
+			cyanBright: [96, 39],
+			whiteBright: [97, 39]
+		},
+		bgColor: {
+			bgBlack: [40, 49],
+			bgRed: [41, 49],
+			bgGreen: [42, 49],
+			bgYellow: [43, 49],
+			bgBlue: [44, 49],
+			bgMagenta: [45, 49],
+			bgCyan: [46, 49],
+			bgWhite: [47, 49],
+
+			// Bright color
+			bgBlackBright: [100, 49],
+			bgRedBright: [101, 49],
+			bgGreenBright: [102, 49],
+			bgYellowBright: [103, 49],
+			bgBlueBright: [104, 49],
+			bgMagentaBright: [105, 49],
+			bgCyanBright: [106, 49],
+			bgWhiteBright: [107, 49]
+		}
+	};
+
+	// Fix humans
+	styles.color.grey = styles.color.gray;
+
+	for (const groupName of Object.keys(styles)) {
+		const group = styles[groupName];
+
+		for (const styleName of Object.keys(group)) {
+			const style = group[styleName];
+
+			styles[styleName] = {
+				open: `\u001B[${style[0]}m`,
+				close: `\u001B[${style[1]}m`
+			};
+
+			group[styleName] = styles[styleName];
+
+			codes.set(style[0], style[1]);
+		}
+
+		Object.defineProperty(styles, groupName, {
+			value: group,
+			enumerable: false
+		});
+
+		Object.defineProperty(styles, 'codes', {
+			value: codes,
+			enumerable: false
+		});
+	}
+
+	const ansi2ansi = n => n;
+	const rgb2rgb = (r, g, b) => [r, g, b];
+
+	styles.color.close = '\u001B[39m';
+	styles.bgColor.close = '\u001B[49m';
+
+	styles.color.ansi = {
+		ansi: wrapAnsi16(ansi2ansi, 0)
+	};
+	styles.color.ansi256 = {
+		ansi256: wrapAnsi256(ansi2ansi, 0)
+	};
+	styles.color.ansi16m = {
+		rgb: wrapAnsi16m(rgb2rgb, 0)
+	};
+
+	styles.bgColor.ansi = {
+		ansi: wrapAnsi16(ansi2ansi, 10)
+	};
+	styles.bgColor.ansi256 = {
+		ansi256: wrapAnsi256(ansi2ansi, 10)
+	};
+	styles.bgColor.ansi16m = {
+		rgb: wrapAnsi16m(rgb2rgb, 10)
+	};
+
+	for (let key of Object.keys(colorConvert)) {
+		if (typeof colorConvert[key] !== 'object') {
+			continue;
+		}
+
+		const suite = colorConvert[key];
+
+		if (key === 'ansi16') {
+			key = 'ansi';
+		}
+
+		if ('ansi16' in suite) {
+			styles.color.ansi[key] = wrapAnsi16(suite.ansi16, 0);
+			styles.bgColor.ansi[key] = wrapAnsi16(suite.ansi16, 10);
+		}
+
+		if ('ansi256' in suite) {
+			styles.color.ansi256[key] = wrapAnsi256(suite.ansi256, 0);
+			styles.bgColor.ansi256[key] = wrapAnsi256(suite.ansi256, 10);
+		}
+
+		if ('rgb' in suite) {
+			styles.color.ansi16m[key] = wrapAnsi16m(suite.rgb, 0);
+			styles.bgColor.ansi16m[key] = wrapAnsi16m(suite.rgb, 10);
+		}
+	}
+
+	return styles;
+}
+
+// Make the export immutable
+Object.defineProperty(module, 'exports', {
+	enumerable: true,
+	get: assembleStyles
+});
diff --git a/igv_component/node_modules/ansi-styles/license b/igv_component/node_modules/ansi-styles/license
new file mode 100644
index 0000000000000000000000000000000000000000..e7af2f77107d73046421ef56c4684cbfdd3c1e89
--- /dev/null
+++ b/igv_component/node_modules/ansi-styles/license
@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/igv_component/node_modules/ansi-styles/package.json b/igv_component/node_modules/ansi-styles/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..65edb48c399c5ceffe281ba0a6dd3e09fa4b5dd6
--- /dev/null
+++ b/igv_component/node_modules/ansi-styles/package.json
@@ -0,0 +1,56 @@
+{
+	"name": "ansi-styles",
+	"version": "3.2.1",
+	"description": "ANSI escape codes for styling strings in the terminal",
+	"license": "MIT",
+	"repository": "chalk/ansi-styles",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "sindresorhus@gmail.com",
+		"url": "sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=4"
+	},
+	"scripts": {
+		"test": "xo && ava",
+		"screenshot": "svg-term --command='node screenshot' --out=screenshot.svg --padding=3 --width=55 --height=3 --at=1000 --no-cursor"
+	},
+	"files": [
+		"index.js"
+	],
+	"keywords": [
+		"ansi",
+		"styles",
+		"color",
+		"colour",
+		"colors",
+		"terminal",
+		"console",
+		"cli",
+		"string",
+		"tty",
+		"escape",
+		"formatting",
+		"rgb",
+		"256",
+		"shell",
+		"xterm",
+		"log",
+		"logging",
+		"command-line",
+		"text"
+	],
+	"dependencies": {
+		"color-convert": "^1.9.0"
+	},
+	"devDependencies": {
+		"ava": "*",
+		"babel-polyfill": "^6.23.0",
+		"svg-term-cli": "^2.1.1",
+		"xo": "*"
+	},
+	"ava": {
+		"require": "babel-polyfill"
+	}
+}
diff --git a/igv_component/node_modules/ansi-styles/readme.md b/igv_component/node_modules/ansi-styles/readme.md
new file mode 100644
index 0000000000000000000000000000000000000000..3158e2df59ce6637302d017d795492c1c3cef1c0
--- /dev/null
+++ b/igv_component/node_modules/ansi-styles/readme.md
@@ -0,0 +1,147 @@
+# ansi-styles [![Build Status](https://travis-ci.org/chalk/ansi-styles.svg?branch=master)](https://travis-ci.org/chalk/ansi-styles)
+
+> [ANSI escape codes](http://en.wikipedia.org/wiki/ANSI_escape_code#Colors_and_Styles) for styling strings in the terminal
+
+You probably want the higher-level [chalk](https://github.com/chalk/chalk) module for styling your strings.
+
+<img src="https://cdn.rawgit.com/chalk/ansi-styles/8261697c95bf34b6c7767e2cbe9941a851d59385/screenshot.svg" width="900">
+
+
+## Install
+
+```
+$ npm install ansi-styles
+```
+
+
+## Usage
+
+```js
+const style = require('ansi-styles');
+
+console.log(`${style.green.open}Hello world!${style.green.close}`);
+
+
+// Color conversion between 16/256/truecolor
+// NOTE: If conversion goes to 16 colors or 256 colors, the original color
+//       may be degraded to fit that color palette. This means terminals
+//       that do not support 16 million colors will best-match the
+//       original color.
+console.log(style.bgColor.ansi.hsl(120, 80, 72) + 'Hello world!' + style.bgColor.close);
+console.log(style.color.ansi256.rgb(199, 20, 250) + 'Hello world!' + style.color.close);
+console.log(style.color.ansi16m.hex('#ABCDEF') + 'Hello world!' + style.color.close);
+```
+
+## API
+
+Each style has an `open` and `close` property.
+
+
+## Styles
+
+### Modifiers
+
+- `reset`
+- `bold`
+- `dim`
+- `italic` *(Not widely supported)*
+- `underline`
+- `inverse`
+- `hidden`
+- `strikethrough` *(Not widely supported)*
+
+### Colors
+
+- `black`
+- `red`
+- `green`
+- `yellow`
+- `blue`
+- `magenta`
+- `cyan`
+- `white`
+- `gray` ("bright black")
+- `redBright`
+- `greenBright`
+- `yellowBright`
+- `blueBright`
+- `magentaBright`
+- `cyanBright`
+- `whiteBright`
+
+### Background colors
+
+- `bgBlack`
+- `bgRed`
+- `bgGreen`
+- `bgYellow`
+- `bgBlue`
+- `bgMagenta`
+- `bgCyan`
+- `bgWhite`
+- `bgBlackBright`
+- `bgRedBright`
+- `bgGreenBright`
+- `bgYellowBright`
+- `bgBlueBright`
+- `bgMagentaBright`
+- `bgCyanBright`
+- `bgWhiteBright`
+
+
+## Advanced usage
+
+By default, you get a map of styles, but the styles are also available as groups. They are non-enumerable so they don't show up unless you access them explicitly. This makes it easier to expose only a subset in a higher-level module.
+
+- `style.modifier`
+- `style.color`
+- `style.bgColor`
+
+###### Example
+
+```js
+console.log(style.color.green.open);
+```
+
+Raw escape codes (i.e. without the CSI escape prefix `\u001B[` and render mode postfix `m`) are available under `style.codes`, which returns a `Map` with the open codes as keys and close codes as values.
+
+###### Example
+
+```js
+console.log(style.codes.get(36));
+//=> 39
+```
+
+
+## [256 / 16 million (TrueColor) support](https://gist.github.com/XVilka/8346728)
+
+`ansi-styles` uses the [`color-convert`](https://github.com/Qix-/color-convert) package to allow for converting between various colors and ANSI escapes, with support for 256 and 16 million colors.
+
+To use these, call the associated conversion function with the intended output, for example:
+
+```js
+style.color.ansi.rgb(100, 200, 15); // RGB to 16 color ansi foreground code
+style.bgColor.ansi.rgb(100, 200, 15); // RGB to 16 color ansi background code
+
+style.color.ansi256.hsl(120, 100, 60); // HSL to 256 color ansi foreground code
+style.bgColor.ansi256.hsl(120, 100, 60); // HSL to 256 color ansi foreground code
+
+style.color.ansi16m.hex('#C0FFEE'); // Hex (RGB) to 16 million color foreground code
+style.bgColor.ansi16m.hex('#C0FFEE'); // Hex (RGB) to 16 million color background code
+```
+
+
+## Related
+
+- [ansi-escapes](https://github.com/sindresorhus/ansi-escapes) - ANSI escape codes for manipulating the terminal
+
+
+## Maintainers
+
+- [Sindre Sorhus](https://github.com/sindresorhus)
+- [Josh Junon](https://github.com/qix-)
+
+
+## License
+
+MIT
diff --git a/igv_component/node_modules/apache-arrow/Arrow.d.ts b/igv_component/node_modules/apache-arrow/Arrow.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..938c86ecfbbf4b917ba409599f542bf91bbaf8dd
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.d.ts
@@ -0,0 +1,125 @@
+export { MessageHeader } from './fb/message-header.js';
+export { Type, BufferType, DateUnit, TimeUnit, Precision, UnionMode, IntervalUnit, MetadataVersion, } from './enum.js';
+export { Data, makeData } from './data.js';
+export type { TypeMap } from './type.js';
+export { DataType, Null, Bool, Int, Int8, Int16, Int32, Int64, Uint8, Uint16, Uint32, Uint64, Float, Float16, Float32, Float64, Utf8, Binary, FixedSizeBinary, Date_, DateDay, DateMillisecond, Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond, Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond, Decimal, List, Struct, Union, DenseUnion, SparseUnion, Dictionary, Interval, IntervalDayTime, IntervalYearMonth, FixedSizeList, Map_ } from './type.js';
+export { Table, makeTable, tableFromArrays } from './table.js';
+export { Vector, makeVector } from './vector.js';
+export { Visitor } from './visitor.js';
+export { Schema, Field } from './schema.js';
+export { MapRow } from './row/map.js';
+export { StructRow } from './row/struct.js';
+export type { StructRowProxy } from './row/struct.js';
+export { Builder } from './builder.js';
+export { makeBuilder, vectorFromArray, tableFromJSON, builderThroughIterable, builderThroughAsyncIterable } from './factories.js';
+export type { BuilderOptions } from './builder.js';
+export { BoolBuilder } from './builder/bool.js';
+export { NullBuilder } from './builder/null.js';
+export { DateBuilder, DateDayBuilder, DateMillisecondBuilder } from './builder/date.js';
+export { DecimalBuilder } from './builder/decimal.js';
+export { DictionaryBuilder } from './builder/dictionary.js';
+export { FixedSizeBinaryBuilder } from './builder/fixedsizebinary.js';
+export { FloatBuilder, Float16Builder, Float32Builder, Float64Builder } from './builder/float.js';
+export { IntBuilder, Int8Builder, Int16Builder, Int32Builder, Int64Builder, Uint8Builder, Uint16Builder, Uint32Builder, Uint64Builder } from './builder/int.js';
+export { TimeBuilder, TimeSecondBuilder, TimeMillisecondBuilder, TimeMicrosecondBuilder, TimeNanosecondBuilder } from './builder/time.js';
+export { TimestampBuilder, TimestampSecondBuilder, TimestampMillisecondBuilder, TimestampMicrosecondBuilder, TimestampNanosecondBuilder } from './builder/timestamp.js';
+export { IntervalBuilder, IntervalDayTimeBuilder, IntervalYearMonthBuilder } from './builder/interval.js';
+export { Utf8Builder } from './builder/utf8.js';
+export { BinaryBuilder } from './builder/binary.js';
+export { ListBuilder } from './builder/list.js';
+export { FixedSizeListBuilder } from './builder/fixedsizelist.js';
+export { MapBuilder } from './builder/map.js';
+export { StructBuilder } from './builder/struct.js';
+export { UnionBuilder, SparseUnionBuilder, DenseUnionBuilder } from './builder/union.js';
+export { ByteStream, AsyncByteStream, AsyncByteQueue } from './io/stream.js';
+export type { ReadableSource, WritableSink } from './io/stream.js';
+export { RecordBatchReader, RecordBatchFileReader, RecordBatchStreamReader, AsyncRecordBatchFileReader, AsyncRecordBatchStreamReader } from './ipc/reader.js';
+export { RecordBatchWriter, RecordBatchFileWriter, RecordBatchStreamWriter, RecordBatchJSONWriter } from './ipc/writer.js';
+export { tableToIPC, tableFromIPC } from './ipc/serialization.js';
+export { MessageReader, AsyncMessageReader, JSONMessageReader } from './ipc/message.js';
+export { Message } from './ipc/metadata/message.js';
+export { RecordBatch } from './recordbatch.js';
+export type { ArrowJSONLike, FileHandle, Readable, Writable, ReadableWritable, ReadableDOMStreamOptions } from './io/interfaces.js';
+import * as util_bn_ from './util/bn.js';
+import * as util_int_ from './util/int.js';
+import * as util_bit_ from './util/bit.js';
+import * as util_buffer_ from './util/buffer.js';
+import { compareSchemas, compareFields, compareTypes } from './visitor/typecomparator.js';
+/** @ignore */
+export declare const util: {
+    compareSchemas: typeof compareSchemas;
+    compareFields: typeof compareFields;
+    compareTypes: typeof compareTypes;
+    clampIndex<T extends {
+        length: number;
+        stride?: number | undefined;
+    }>(source: T, index: number): number;
+    clampIndex<T_1 extends {
+        length: number;
+        stride?: number | undefined;
+    }, N extends (source: T_1, index: number) => any = (source: T_1, index: number) => any>(source: T_1, index: number, then: N): ReturnType<N>;
+    clampRange<T_2 extends {
+        length: number;
+        stride?: number | undefined;
+    }>(source: T_2, begin: number | undefined, end: number | undefined): [number, number];
+    clampRange<T_3 extends {
+        length: number;
+        stride?: number | undefined;
+    }, N_1 extends (source: T_3, offset: number, length: number) => any = (source: T_3, offset: number, length: number) => any>(source: T_3, begin: number | undefined, end: number | undefined, then: N_1): ReturnType<N_1>;
+    createElementComparator(search: any): (value: any) => boolean;
+    memcpy<TTarget extends ArrayBufferView, TSource extends ArrayBufferView>(target: TTarget, source: TSource, targetByteOffset?: number, sourceByteLength?: number): TTarget;
+    joinUint8Arrays(chunks: Uint8Array[], size?: number | null | undefined): [Uint8Array, Uint8Array[], number];
+    toArrayBufferView<T_4 extends import("./interfaces.js").TypedArrayConstructor<any> | import("./interfaces.js").BigIntArrayConstructor<any>>(ArrayBufferViewCtor: any, input: util_buffer_.ArrayBufferViewInput): InstanceType<T_4>;
+    toArrayBufferViewIterator<T_5 extends import("./interfaces.js").TypedArray>(ArrayCtor: import("./interfaces.js").TypedArrayConstructor<T_5>, source: util_buffer_.ArrayBufferViewInput | Iterable<util_buffer_.ArrayBufferViewInput>): Generator<T_5, T_5, number | undefined>;
+    toArrayBufferViewAsyncIterator<T_6 extends import("./interfaces.js").TypedArray>(ArrayCtor: import("./interfaces.js").TypedArrayConstructor<T_6>, source: util_buffer_.ArrayBufferViewInput | AsyncIterable<util_buffer_.ArrayBufferViewInput> | Iterable<util_buffer_.ArrayBufferViewInput> | PromiseLike<util_buffer_.ArrayBufferViewInput>): AsyncGenerator<T_6, T_6, number | undefined>;
+    rebaseValueOffsets(offset: number, length: number, valueOffsets: Int32Array): Int32Array;
+    compareArrayLike<T_7 extends ArrayLike<any>>(a: T_7, b: T_7): boolean;
+    toInt8Array: (input: util_buffer_.ArrayBufferViewInput) => any;
+    toInt16Array: (input: util_buffer_.ArrayBufferViewInput) => any;
+    toInt32Array: (input: util_buffer_.ArrayBufferViewInput) => any;
+    toBigInt64Array: (input: util_buffer_.ArrayBufferViewInput) => any;
+    toUint8Array: (input: util_buffer_.ArrayBufferViewInput) => any;
+    toUint16Array: (input: util_buffer_.ArrayBufferViewInput) => any;
+    toUint32Array: (input: util_buffer_.ArrayBufferViewInput) => any;
+    toBigUint64Array: (input: util_buffer_.ArrayBufferViewInput) => any;
+    toFloat32Array: (input: util_buffer_.ArrayBufferViewInput) => any;
+    toFloat64Array: (input: util_buffer_.ArrayBufferViewInput) => any;
+    toUint8ClampedArray: (input: util_buffer_.ArrayBufferViewInput) => any;
+    toInt8ArrayIterator: (input: util_buffer_.ArrayBufferViewInput | Iterable<util_buffer_.ArrayBufferViewInput>) => Generator<Int8Array, Int8Array, number | undefined>;
+    toInt16ArrayIterator: (input: util_buffer_.ArrayBufferViewInput | Iterable<util_buffer_.ArrayBufferViewInput>) => Generator<Int16Array, Int16Array, number | undefined>;
+    toInt32ArrayIterator: (input: util_buffer_.ArrayBufferViewInput | Iterable<util_buffer_.ArrayBufferViewInput>) => Generator<Int32Array, Int32Array, number | undefined>;
+    toUint8ArrayIterator: (input: util_buffer_.ArrayBufferViewInput | Iterable<util_buffer_.ArrayBufferViewInput>) => Generator<Uint8Array, Uint8Array, number | undefined>;
+    toUint16ArrayIterator: (input: util_buffer_.ArrayBufferViewInput | Iterable<util_buffer_.ArrayBufferViewInput>) => Generator<Uint16Array, Uint16Array, number | undefined>;
+    toUint32ArrayIterator: (input: util_buffer_.ArrayBufferViewInput | Iterable<util_buffer_.ArrayBufferViewInput>) => Generator<Uint32Array, Uint32Array, number | undefined>;
+    toFloat32ArrayIterator: (input: util_buffer_.ArrayBufferViewInput | Iterable<util_buffer_.ArrayBufferViewInput>) => Generator<Float32Array, Float32Array, number | undefined>;
+    toFloat64ArrayIterator: (input: util_buffer_.ArrayBufferViewInput | Iterable<util_buffer_.ArrayBufferViewInput>) => Generator<Float64Array, Float64Array, number | undefined>;
+    toUint8ClampedArrayIterator: (input: util_buffer_.ArrayBufferViewInput | Iterable<util_buffer_.ArrayBufferViewInput>) => Generator<Uint8ClampedArray, Uint8ClampedArray, number | undefined>;
+    toInt8ArrayAsyncIterator: (input: util_buffer_.ArrayBufferViewInput | AsyncIterable<util_buffer_.ArrayBufferViewInput> | Iterable<util_buffer_.ArrayBufferViewInput> | PromiseLike<util_buffer_.ArrayBufferViewInput>) => AsyncGenerator<Int8Array, Int8Array, number | undefined>;
+    toInt16ArrayAsyncIterator: (input: util_buffer_.ArrayBufferViewInput | AsyncIterable<util_buffer_.ArrayBufferViewInput> | Iterable<util_buffer_.ArrayBufferViewInput> | PromiseLike<util_buffer_.ArrayBufferViewInput>) => AsyncGenerator<Int16Array, Int16Array, number | undefined>;
+    toInt32ArrayAsyncIterator: (input: util_buffer_.ArrayBufferViewInput | AsyncIterable<util_buffer_.ArrayBufferViewInput> | Iterable<util_buffer_.ArrayBufferViewInput> | PromiseLike<util_buffer_.ArrayBufferViewInput>) => AsyncGenerator<Int32Array, Int32Array, number | undefined>;
+    toUint8ArrayAsyncIterator: (input: util_buffer_.ArrayBufferViewInput | AsyncIterable<util_buffer_.ArrayBufferViewInput> | Iterable<util_buffer_.ArrayBufferViewInput> | PromiseLike<util_buffer_.ArrayBufferViewInput>) => AsyncGenerator<Uint8Array, Uint8Array, number | undefined>;
+    toUint16ArrayAsyncIterator: (input: util_buffer_.ArrayBufferViewInput | AsyncIterable<util_buffer_.ArrayBufferViewInput> | Iterable<util_buffer_.ArrayBufferViewInput> | PromiseLike<util_buffer_.ArrayBufferViewInput>) => AsyncGenerator<Uint16Array, Uint16Array, number | undefined>;
+    toUint32ArrayAsyncIterator: (input: util_buffer_.ArrayBufferViewInput | AsyncIterable<util_buffer_.ArrayBufferViewInput> | Iterable<util_buffer_.ArrayBufferViewInput> | PromiseLike<util_buffer_.ArrayBufferViewInput>) => AsyncGenerator<Uint32Array, Uint32Array, number | undefined>;
+    toFloat32ArrayAsyncIterator: (input: util_buffer_.ArrayBufferViewInput | AsyncIterable<util_buffer_.ArrayBufferViewInput> | Iterable<util_buffer_.ArrayBufferViewInput> | PromiseLike<util_buffer_.ArrayBufferViewInput>) => AsyncGenerator<Float32Array, Float32Array, number | undefined>;
+    toFloat64ArrayAsyncIterator: (input: util_buffer_.ArrayBufferViewInput | AsyncIterable<util_buffer_.ArrayBufferViewInput> | Iterable<util_buffer_.ArrayBufferViewInput> | PromiseLike<util_buffer_.ArrayBufferViewInput>) => AsyncGenerator<Float64Array, Float64Array, number | undefined>;
+    toUint8ClampedArrayAsyncIterator: (input: util_buffer_.ArrayBufferViewInput | AsyncIterable<util_buffer_.ArrayBufferViewInput> | Iterable<util_buffer_.ArrayBufferViewInput> | PromiseLike<util_buffer_.ArrayBufferViewInput>) => AsyncGenerator<Uint8ClampedArray, Uint8ClampedArray, number | undefined>;
+    uint16ToFloat64(h: number): number;
+    float64ToUint16(d: number): number;
+    getBool(_data: any, _index: number, byte: number, bit: number): boolean;
+    getBit(_data: any, _index: number, byte: number, bit: number): 0 | 1;
+    setBool(bytes: Uint8Array, index: number, value: any): boolean;
+    truncateBitmap(offset: number, length: number, bitmap: Uint8Array): Uint8Array;
+    packBools(values: Iterable<any>): Uint8Array;
+    popcnt_bit_range(data: Uint8Array, lhs: number, rhs: number): number;
+    popcnt_array(arr: ArrayBufferView, byteOffset?: number | undefined, byteLength?: number | undefined): number;
+    popcnt_uint32(uint32: number): number;
+    BitIterator: typeof util_bit_.BitIterator;
+    BaseInt64: typeof util_int_.BaseInt64;
+    Uint64: typeof util_int_.Uint64;
+    Int64: typeof util_int_.Int64;
+    Int128: typeof util_int_.Int128;
+    isArrowBigNumSymbol: typeof util_bn_.isArrowBigNumSymbol;
+    bignumToString: <T_8 extends util_bn_.BN<(Int8Array | Int16Array | Int32Array) | (Uint8Array | Uint8ClampedArray | Uint16Array | Uint32Array)>>(a: T_8) => string;
+    bignumToBigInt: <T_9 extends util_bn_.BN<(Int8Array | Int16Array | Int32Array) | (Uint8Array | Uint8ClampedArray | Uint16Array | Uint32Array)>>(a: T_9) => bigint;
+    BN: typeof util_bn_.BN;
+};
diff --git a/igv_component/node_modules/apache-arrow/Arrow.d.ts.map b/igv_component/node_modules/apache-arrow/Arrow.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..2d90f6fe26fb59b4feac270ee1b48f01f32f51f7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["Arrow.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,aAAa,EAAE,MAAM,wBAAwB,CAAC;AAEvD,OAAO,EACH,IAAI,EACJ,UAAU,EACV,QAAQ,EACR,QAAQ,EACR,SAAS,EACT,SAAS,EACT,YAAY,EACZ,eAAe,GAClB,MAAM,WAAW,CAAC;AAEnB,OAAO,EAAE,IAAI,EAAE,QAAQ,EAAE,MAAM,WAAW,CAAC;AAC3C,YAAY,EAAE,OAAO,EAAE,MAAM,WAAW,CAAC;AACzC,OAAO,EACH,QAAQ,EACR,IAAI,EACJ,IAAI,EACJ,GAAG,EAAE,IAAI,EAAE,KAAK,EAAE,KAAK,EAAE,KAAK,EAAE,KAAK,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,EAC7D,KAAK,EAAE,OAAO,EAAE,OAAO,EAAE,OAAO,EAChC,IAAI,EACJ,MAAM,EACN,eAAe,EACf,KAAK,EAAE,OAAO,EAAE,eAAe,EAC/B,SAAS,EAAE,eAAe,EAAE,oBAAoB,EAAE,oBAAoB,EAAE,mBAAmB,EAC3F,IAAI,EAAE,UAAU,EAAE,eAAe,EAAE,eAAe,EAAE,cAAc,EAClE,OAAO,EACP,IAAI,EACJ,MAAM,EACN,KAAK,EAAE,UAAU,EAAE,WAAW,EAC9B,UAAU,EACV,QAAQ,EAAE,eAAe,EAAE,iBAAiB,EAC5C,aAAa,EACb,IAAI,EACP,MAAM,WAAW,CAAC;AAEnB,OAAO,EAAE,KAAK,EAAE,SAAS,EAAE,eAAe,EAAE,MAAM,YAAY,CAAC;AAC/D,OAAO,EAAE,MAAM,EAAE,UAAU,EAAE,MAAM,aAAa,CAAC;AACjD,OAAO,EAAE,OAAO,EAAE,MAAM,cAAc,CAAC;AACvC,OAAO,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM,aAAa,CAAC;AAE5C,OAAO,EAAE,MAAM,EAAE,MAAM,cAAc,CAAC;AACtC,OAAO,EAAE,SAAS,EAAE,MAAM,iBAAiB,CAAC;AAC5C,YAAY,EAAE,cAAc,EAAE,MAAM,iBAAiB,CAAC;AAEtD,OAAO,EAAE,OAAO,EAAE,MAAM,cAAc,CAAC;AACvC,OAAO,EAAE,WAAW,EAAE,eAAe,EAAE,aAAa,EAAE,sBAAsB,EAAE,2BAA2B,EAAE,MAAM,gBAAgB,CAAC;AAClI,YAAY,EAAE,cAAc,EAAE,MAAM,cAAc,CAAC;AACnD,OAAO,EAAE,WAAW,EAAE,MAAM,mBAAmB,CAAC;AAChD,OAAO,EAAE,WAAW,EAAE,MAAM,mBAAmB,CAAC;AAChD,OAAO,EAAE,WAAW,EAAE,cAAc,EAAE,sBAAsB,EAAE,MAAM,mBAAmB,CAAC;AACxF,OAAO,EAAE,cAAc,EAAE,MAAM,sBAAsB,CAAC;AACtD,OAAO,EAAE,iBAAiB,EAAE,MAAM,yBAAyB,CAAC;AAC5D,OAAO,EAAE,sBAAsB,EAAE,MAAM,8BAA8B,CAAC;AACtE,OAAO,EAAE,YAAY,EAAE,cAAc,EAAE,cAAc,EAAE,cAAc,EAAE,MAAM,oBAAoB,CAAC;AAClG,OAAO,EAAE,UAAU,EAAE,WAAW,EAAE,YAAY,EAAE,YAAY,EAAE,YAAY,EAAE,YAAY,EAAE,aAAa,EAAE,aAAa,EAAE,aAAa,EAAE,MAAM,kBAAkB,CAAC;AAChK,OAAO,EAAE,WAAW,EAAE,iBAAiB,EAAE,sBAAsB,EAAE,sBAAsB,EAAE,qBAAqB,EAAE,MAAM,mBAAmB,CAAC;AAC1I,OAAO,EAAE,gBAAgB,EAAE,sBAAsB,EAAE,2BAA2B,EAAE,2BAA2B,EAAE,0BAA0B,EAAE,MAAM,wBAAwB,CAAC;AACxK,OAAO,EAAE,eAAe,EAAE,sBAAsB,EAAE,wBAAwB,EAAE,MAAM,uBAAuB,CAAC;AAC1G,OAAO,EAAE,WAAW,EAAE,MAAM,mBAAmB,CAAC;AAChD,OAAO,EAAE,aAAa,EAAE,MAAM,qBAAqB,CAAC;AACpD,OAAO,EAAE,WAAW,EAAE,MAAM,mBAAmB,CAAC;AAChD,OAAO,EAAE,oBAAoB,EAAE,MAAM,4BAA4B,CAAC;AAClE,OAAO,EAAE,UAAU,EAAE,MAAM,kBAAkB,CAAC;AAC9C,OAAO,EAAE,aAAa,EAAE,MAAM,qBAAqB,CAAC;AACpD,OAAO,EAAE,YAAY,EAAE,kBAAkB,EAAE,iBAAiB,EAAE,MAAM,oBAAoB,CAAC;AAEzF,OAAO,EAAE,UAAU,EAAE,eAAe,EAAE,cAAc,EAAE,MAAM,gBAAgB,CAAC;AAC7E,YAAY,EAAE,cAAc,EAAE,YAAY,EAAE,MAAM,gBAAgB,CAAC;AACnE,OAAO,EAAE,iBAAiB,EAAE,qBAAqB,EAAE,uBAAuB,EAAE,0BAA0B,EAAE,4BAA4B,EAAE,MAAM,iBAAiB,CAAC;AAC9J,OAAO,EAAE,iBAAiB,EAAE,qBAAqB,EAAE,uBAAuB,EAAE,qBAAqB,EAAE,MAAM,iBAAiB,CAAC;AAC3H,OAAO,EAAE,UAAU,EAAE,YAAY,EAAE,MAAM,wBAAwB,CAAC;AAClE,OAAO,EAAE,aAAa,EAAE,kBAAkB,EAAE,iBAAiB,EAAE,MAAM,kBAAkB,CAAC;AACxF,OAAO,EAAE,OAAO,EAAE,MAAM,2BAA2B,CAAC;AACpD,OAAO,EAAE,WAAW,EAAE,MAAM,kBAAkB,CAAC;AAC/C,YAAY,EAAE,aAAa,EAAE,UAAU,EAAE,QAAQ,EAAE,QAAQ,EAAE,gBAAgB,EAAE,wBAAwB,EAAE,MAAM,oBAAoB,CAAC;AAEpI,OAAO,KAAK,QAAQ,MAAM,cAAc,CAAC;AACzC,OAAO,KAAK,SAAS,MAAM,eAAe,CAAC;AAC3C,OAAO,KAAK,SAAS,MAAM,eAAe,CAAC;AAE3C,OAAO,KAAK,YAAY,MAAM,kBAAkB,CAAC;AAEjD,OAAO,EAAE,cAAc,EAAE,aAAa,EAAE,YAAY,EAAE,MAAM,6BAA6B,CAAC;AAE1F,cAAc;AACd,eAAO,MAAM,IAAI;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;CAUhB,CAAC","file":"Arrow.d.ts","sourceRoot":"src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/Arrow.dom.d.ts b/igv_component/node_modules/apache-arrow/Arrow.dom.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..dd284c3e2a7e867857c3a9c6fd3a6917c2ec63a0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.dom.d.ts
@@ -0,0 +1,3 @@
+export type { TypeMap, StructRowProxy, ReadableSource, WritableSink, ArrowJSONLike, FileHandle, Readable, Writable, ReadableWritable, ReadableDOMStreamOptions, } from './Arrow.js';
+export { DateUnit, IntervalUnit, MessageHeader, MetadataVersion, Precision, TimeUnit, Type, UnionMode, BufferType, Data, makeData, DataType, Null, Bool, Int, Int8, Int16, Int32, Int64, Uint8, Uint16, Uint32, Uint64, Float, Float16, Float32, Float64, Utf8, Binary, FixedSizeBinary, Date_, DateDay, DateMillisecond, Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond, Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond, Decimal, List, Struct, StructRow, Union, DenseUnion, SparseUnion, Dictionary, Interval, IntervalDayTime, IntervalYearMonth, FixedSizeList, Map_, MapRow, Table, makeTable, tableFromArrays, Schema, Field, Visitor, Vector, makeVector, vectorFromArray, tableFromJSON, ByteStream, AsyncByteStream, AsyncByteQueue, RecordBatchReader, RecordBatchFileReader, RecordBatchStreamReader, AsyncRecordBatchFileReader, AsyncRecordBatchStreamReader, RecordBatchWriter, RecordBatchFileWriter, RecordBatchStreamWriter, RecordBatchJSONWriter, tableFromIPC, tableToIPC, MessageReader, AsyncMessageReader, JSONMessageReader, Message, RecordBatch, util, Builder, makeBuilder, builderThroughIterable, builderThroughAsyncIterable, } from './Arrow.js';
+export { BinaryBuilder, BoolBuilder, DateBuilder, DateDayBuilder, DateMillisecondBuilder, DecimalBuilder, DictionaryBuilder, FixedSizeBinaryBuilder, FixedSizeListBuilder, FloatBuilder, Float16Builder, Float32Builder, Float64Builder, IntervalBuilder, IntervalDayTimeBuilder, IntervalYearMonthBuilder, IntBuilder, Int8Builder, Int16Builder, Int32Builder, Int64Builder, Uint8Builder, Uint16Builder, Uint32Builder, Uint64Builder, ListBuilder, MapBuilder, NullBuilder, StructBuilder, TimestampBuilder, TimestampSecondBuilder, TimestampMillisecondBuilder, TimestampMicrosecondBuilder, TimestampNanosecondBuilder, TimeBuilder, TimeSecondBuilder, TimeMillisecondBuilder, TimeMicrosecondBuilder, TimeNanosecondBuilder, UnionBuilder, DenseUnionBuilder, SparseUnionBuilder, Utf8Builder, } from './Arrow.js';
diff --git a/igv_component/node_modules/apache-arrow/Arrow.dom.d.ts.map b/igv_component/node_modules/apache-arrow/Arrow.dom.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..11b9163553a478002c098962d4bec441b52fcaa6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.dom.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["Arrow.dom.ts"],"names":[],"mappings":"AAmCA,YAAY,EACR,OAAO,EAAE,cAAc,EACvB,cAAc,EAAE,YAAY,EAC5B,aAAa,EAAE,UAAU,EAAE,QAAQ,EAAE,QAAQ,EAAE,gBAAgB,EAAE,wBAAwB,GAC5F,MAAM,YAAY,CAAC;AAEpB,OAAO,EACH,QAAQ,EAAE,YAAY,EAAE,aAAa,EAAE,eAAe,EAAE,SAAS,EAAE,QAAQ,EAAE,IAAI,EAAE,SAAS,EAAE,UAAU,EACxG,IAAI,EAAE,QAAQ,EACd,QAAQ,EACR,IAAI,EACJ,IAAI,EACJ,GAAG,EAAE,IAAI,EAAE,KAAK,EAAE,KAAK,EAAE,KAAK,EAAE,KAAK,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,EAC7D,KAAK,EAAE,OAAO,EAAE,OAAO,EAAE,OAAO,EAChC,IAAI,EACJ,MAAM,EACN,eAAe,EACf,KAAK,EAAE,OAAO,EAAE,eAAe,EAC/B,SAAS,EAAE,eAAe,EAAE,oBAAoB,EAAE,oBAAoB,EAAE,mBAAmB,EAC3F,IAAI,EAAE,UAAU,EAAE,eAAe,EAAE,eAAe,EAAE,cAAc,EAClE,OAAO,EACP,IAAI,EACJ,MAAM,EAAE,SAAS,EACjB,KAAK,EAAE,UAAU,EAAE,WAAW,EAC9B,UAAU,EACV,QAAQ,EAAE,eAAe,EAAE,iBAAiB,EAC5C,aAAa,EACb,IAAI,EAAE,MAAM,EACZ,KAAK,EAAE,SAAS,EAAE,eAAe,EACjC,MAAM,EAAE,KAAK,EACb,OAAO,EACP,MAAM,EAAE,UAAU,EAAE,eAAe,EAAE,aAAa,EAClD,UAAU,EAAE,eAAe,EAAE,cAAc,EAC3C,iBAAiB,EAAE,qBAAqB,EAAE,uBAAuB,EAAE,0BAA0B,EAAE,4BAA4B,EAC3H,iBAAiB,EAAE,qBAAqB,EAAE,uBAAuB,EAAE,qBAAqB,EACxF,YAAY,EAAE,UAAU,EACxB,aAAa,EAAE,kBAAkB,EAAE,iBAAiB,EACpD,OAAO,EACP,WAAW,EACX,IAAI,EACJ,OAAO,EAAE,WAAW,EAAE,sBAAsB,EAAE,2BAA2B,GAC5E,MAAM,YAAY,CAAC;AAEpB,OAAO,EACH,aAAa,EACb,WAAW,EACX,WAAW,EAAE,cAAc,EAAE,sBAAsB,EACnD,cAAc,EACd,iBAAiB,EACjB,sBAAsB,EACtB,oBAAoB,EACpB,YAAY,EAAE,cAAc,EAAE,cAAc,EAAE,cAAc,EAC5D,eAAe,EAAE,sBAAsB,EAAE,wBAAwB,EACjE,UAAU,EAAE,WAAW,EAAE,YAAY,EAAE,YAAY,EAAE,YAAY,EAAE,YAAY,EAAE,aAAa,EAAE,aAAa,EAAE,aAAa,EAC5H,WAAW,EACX,UAAU,EACV,WAAW,EACX,aAAa,EACb,gBAAgB,EAAE,sBAAsB,EAAE,2BAA2B,EAAE,2BAA2B,EAAE,0BAA0B,EAC9H,WAAW,EAAE,iBAAiB,EAAE,sBAAsB,EAAE,sBAAsB,EAAE,qBAAqB,EACrG,YAAY,EAAE,iBAAiB,EAAE,kBAAkB,EACnD,WAAW,GACd,MAAM,YAAY,CAAC","file":"Arrow.dom.d.ts","sourceRoot":"src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/Arrow.dom.js b/igv_component/node_modules/apache-arrow/Arrow.dom.js
new file mode 100644
index 0000000000000000000000000000000000000000..1aa5878c370cc607c952724f75fab2563830e5bf
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.dom.js
@@ -0,0 +1,176 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.SparseUnion = exports.DenseUnion = exports.Union = exports.StructRow = exports.Struct = exports.List = exports.Decimal = exports.TimeNanosecond = exports.TimeMicrosecond = exports.TimeMillisecond = exports.TimeSecond = exports.Time = exports.TimestampNanosecond = exports.TimestampMicrosecond = exports.TimestampMillisecond = exports.TimestampSecond = exports.Timestamp = exports.DateMillisecond = exports.DateDay = exports.Date_ = exports.FixedSizeBinary = exports.Binary = exports.Utf8 = exports.Float64 = exports.Float32 = exports.Float16 = exports.Float = exports.Uint64 = exports.Uint32 = exports.Uint16 = exports.Uint8 = exports.Int64 = exports.Int32 = exports.Int16 = exports.Int8 = exports.Int = exports.Bool = exports.Null = exports.DataType = exports.makeData = exports.Data = exports.BufferType = exports.UnionMode = exports.Type = exports.TimeUnit = exports.Precision = exports.MetadataVersion = exports.MessageHeader = exports.IntervalUnit = exports.DateUnit = void 0;
+exports.FixedSizeListBuilder = exports.FixedSizeBinaryBuilder = exports.DictionaryBuilder = exports.DecimalBuilder = exports.DateMillisecondBuilder = exports.DateDayBuilder = exports.DateBuilder = exports.BoolBuilder = exports.BinaryBuilder = exports.builderThroughAsyncIterable = exports.builderThroughIterable = exports.makeBuilder = exports.Builder = exports.util = exports.RecordBatch = exports.Message = exports.JSONMessageReader = exports.AsyncMessageReader = exports.MessageReader = exports.tableToIPC = exports.tableFromIPC = exports.RecordBatchJSONWriter = exports.RecordBatchStreamWriter = exports.RecordBatchFileWriter = exports.RecordBatchWriter = exports.AsyncRecordBatchStreamReader = exports.AsyncRecordBatchFileReader = exports.RecordBatchStreamReader = exports.RecordBatchFileReader = exports.RecordBatchReader = exports.AsyncByteQueue = exports.AsyncByteStream = exports.ByteStream = exports.tableFromJSON = exports.vectorFromArray = exports.makeVector = exports.Vector = exports.Visitor = exports.Field = exports.Schema = exports.tableFromArrays = exports.makeTable = exports.Table = exports.MapRow = exports.Map_ = exports.FixedSizeList = exports.IntervalYearMonth = exports.IntervalDayTime = exports.Interval = exports.Dictionary = void 0;
+exports.Utf8Builder = exports.SparseUnionBuilder = exports.DenseUnionBuilder = exports.UnionBuilder = exports.TimeNanosecondBuilder = exports.TimeMicrosecondBuilder = exports.TimeMillisecondBuilder = exports.TimeSecondBuilder = exports.TimeBuilder = exports.TimestampNanosecondBuilder = exports.TimestampMicrosecondBuilder = exports.TimestampMillisecondBuilder = exports.TimestampSecondBuilder = exports.TimestampBuilder = exports.StructBuilder = exports.NullBuilder = exports.MapBuilder = exports.ListBuilder = exports.Uint64Builder = exports.Uint32Builder = exports.Uint16Builder = exports.Uint8Builder = exports.Int64Builder = exports.Int32Builder = exports.Int16Builder = exports.Int8Builder = exports.IntBuilder = exports.IntervalYearMonthBuilder = exports.IntervalDayTimeBuilder = exports.IntervalBuilder = exports.Float64Builder = exports.Float32Builder = exports.Float16Builder = exports.FloatBuilder = void 0;
+const tslib_1 = require("tslib");
+const adapters_js_1 = tslib_1.__importDefault(require("./io/adapters.js"));
+const builder_js_1 = require("./builder.js");
+const reader_js_1 = require("./ipc/reader.js");
+const writer_js_1 = require("./ipc/writer.js");
+const iterable_js_1 = require("./io/whatwg/iterable.js");
+const builder_js_2 = require("./io/whatwg/builder.js");
+const reader_js_2 = require("./io/whatwg/reader.js");
+const writer_js_2 = require("./io/whatwg/writer.js");
+adapters_js_1.default.toDOMStream = iterable_js_1.toDOMStream;
+builder_js_1.Builder['throughDOM'] = builder_js_2.builderThroughDOMStream;
+reader_js_1.RecordBatchReader['throughDOM'] = reader_js_2.recordBatchReaderThroughDOMStream;
+reader_js_1.RecordBatchFileReader['throughDOM'] = reader_js_2.recordBatchReaderThroughDOMStream;
+reader_js_1.RecordBatchStreamReader['throughDOM'] = reader_js_2.recordBatchReaderThroughDOMStream;
+writer_js_1.RecordBatchWriter['throughDOM'] = writer_js_2.recordBatchWriterThroughDOMStream;
+writer_js_1.RecordBatchFileWriter['throughDOM'] = writer_js_2.recordBatchWriterThroughDOMStream;
+writer_js_1.RecordBatchStreamWriter['throughDOM'] = writer_js_2.recordBatchWriterThroughDOMStream;
+var Arrow_js_1 = require("./Arrow.js");
+Object.defineProperty(exports, "DateUnit", { enumerable: true, get: function () { return Arrow_js_1.DateUnit; } });
+Object.defineProperty(exports, "IntervalUnit", { enumerable: true, get: function () { return Arrow_js_1.IntervalUnit; } });
+Object.defineProperty(exports, "MessageHeader", { enumerable: true, get: function () { return Arrow_js_1.MessageHeader; } });
+Object.defineProperty(exports, "MetadataVersion", { enumerable: true, get: function () { return Arrow_js_1.MetadataVersion; } });
+Object.defineProperty(exports, "Precision", { enumerable: true, get: function () { return Arrow_js_1.Precision; } });
+Object.defineProperty(exports, "TimeUnit", { enumerable: true, get: function () { return Arrow_js_1.TimeUnit; } });
+Object.defineProperty(exports, "Type", { enumerable: true, get: function () { return Arrow_js_1.Type; } });
+Object.defineProperty(exports, "UnionMode", { enumerable: true, get: function () { return Arrow_js_1.UnionMode; } });
+Object.defineProperty(exports, "BufferType", { enumerable: true, get: function () { return Arrow_js_1.BufferType; } });
+Object.defineProperty(exports, "Data", { enumerable: true, get: function () { return Arrow_js_1.Data; } });
+Object.defineProperty(exports, "makeData", { enumerable: true, get: function () { return Arrow_js_1.makeData; } });
+Object.defineProperty(exports, "DataType", { enumerable: true, get: function () { return Arrow_js_1.DataType; } });
+Object.defineProperty(exports, "Null", { enumerable: true, get: function () { return Arrow_js_1.Null; } });
+Object.defineProperty(exports, "Bool", { enumerable: true, get: function () { return Arrow_js_1.Bool; } });
+Object.defineProperty(exports, "Int", { enumerable: true, get: function () { return Arrow_js_1.Int; } });
+Object.defineProperty(exports, "Int8", { enumerable: true, get: function () { return Arrow_js_1.Int8; } });
+Object.defineProperty(exports, "Int16", { enumerable: true, get: function () { return Arrow_js_1.Int16; } });
+Object.defineProperty(exports, "Int32", { enumerable: true, get: function () { return Arrow_js_1.Int32; } });
+Object.defineProperty(exports, "Int64", { enumerable: true, get: function () { return Arrow_js_1.Int64; } });
+Object.defineProperty(exports, "Uint8", { enumerable: true, get: function () { return Arrow_js_1.Uint8; } });
+Object.defineProperty(exports, "Uint16", { enumerable: true, get: function () { return Arrow_js_1.Uint16; } });
+Object.defineProperty(exports, "Uint32", { enumerable: true, get: function () { return Arrow_js_1.Uint32; } });
+Object.defineProperty(exports, "Uint64", { enumerable: true, get: function () { return Arrow_js_1.Uint64; } });
+Object.defineProperty(exports, "Float", { enumerable: true, get: function () { return Arrow_js_1.Float; } });
+Object.defineProperty(exports, "Float16", { enumerable: true, get: function () { return Arrow_js_1.Float16; } });
+Object.defineProperty(exports, "Float32", { enumerable: true, get: function () { return Arrow_js_1.Float32; } });
+Object.defineProperty(exports, "Float64", { enumerable: true, get: function () { return Arrow_js_1.Float64; } });
+Object.defineProperty(exports, "Utf8", { enumerable: true, get: function () { return Arrow_js_1.Utf8; } });
+Object.defineProperty(exports, "Binary", { enumerable: true, get: function () { return Arrow_js_1.Binary; } });
+Object.defineProperty(exports, "FixedSizeBinary", { enumerable: true, get: function () { return Arrow_js_1.FixedSizeBinary; } });
+Object.defineProperty(exports, "Date_", { enumerable: true, get: function () { return Arrow_js_1.Date_; } });
+Object.defineProperty(exports, "DateDay", { enumerable: true, get: function () { return Arrow_js_1.DateDay; } });
+Object.defineProperty(exports, "DateMillisecond", { enumerable: true, get: function () { return Arrow_js_1.DateMillisecond; } });
+Object.defineProperty(exports, "Timestamp", { enumerable: true, get: function () { return Arrow_js_1.Timestamp; } });
+Object.defineProperty(exports, "TimestampSecond", { enumerable: true, get: function () { return Arrow_js_1.TimestampSecond; } });
+Object.defineProperty(exports, "TimestampMillisecond", { enumerable: true, get: function () { return Arrow_js_1.TimestampMillisecond; } });
+Object.defineProperty(exports, "TimestampMicrosecond", { enumerable: true, get: function () { return Arrow_js_1.TimestampMicrosecond; } });
+Object.defineProperty(exports, "TimestampNanosecond", { enumerable: true, get: function () { return Arrow_js_1.TimestampNanosecond; } });
+Object.defineProperty(exports, "Time", { enumerable: true, get: function () { return Arrow_js_1.Time; } });
+Object.defineProperty(exports, "TimeSecond", { enumerable: true, get: function () { return Arrow_js_1.TimeSecond; } });
+Object.defineProperty(exports, "TimeMillisecond", { enumerable: true, get: function () { return Arrow_js_1.TimeMillisecond; } });
+Object.defineProperty(exports, "TimeMicrosecond", { enumerable: true, get: function () { return Arrow_js_1.TimeMicrosecond; } });
+Object.defineProperty(exports, "TimeNanosecond", { enumerable: true, get: function () { return Arrow_js_1.TimeNanosecond; } });
+Object.defineProperty(exports, "Decimal", { enumerable: true, get: function () { return Arrow_js_1.Decimal; } });
+Object.defineProperty(exports, "List", { enumerable: true, get: function () { return Arrow_js_1.List; } });
+Object.defineProperty(exports, "Struct", { enumerable: true, get: function () { return Arrow_js_1.Struct; } });
+Object.defineProperty(exports, "StructRow", { enumerable: true, get: function () { return Arrow_js_1.StructRow; } });
+Object.defineProperty(exports, "Union", { enumerable: true, get: function () { return Arrow_js_1.Union; } });
+Object.defineProperty(exports, "DenseUnion", { enumerable: true, get: function () { return Arrow_js_1.DenseUnion; } });
+Object.defineProperty(exports, "SparseUnion", { enumerable: true, get: function () { return Arrow_js_1.SparseUnion; } });
+Object.defineProperty(exports, "Dictionary", { enumerable: true, get: function () { return Arrow_js_1.Dictionary; } });
+Object.defineProperty(exports, "Interval", { enumerable: true, get: function () { return Arrow_js_1.Interval; } });
+Object.defineProperty(exports, "IntervalDayTime", { enumerable: true, get: function () { return Arrow_js_1.IntervalDayTime; } });
+Object.defineProperty(exports, "IntervalYearMonth", { enumerable: true, get: function () { return Arrow_js_1.IntervalYearMonth; } });
+Object.defineProperty(exports, "FixedSizeList", { enumerable: true, get: function () { return Arrow_js_1.FixedSizeList; } });
+Object.defineProperty(exports, "Map_", { enumerable: true, get: function () { return Arrow_js_1.Map_; } });
+Object.defineProperty(exports, "MapRow", { enumerable: true, get: function () { return Arrow_js_1.MapRow; } });
+Object.defineProperty(exports, "Table", { enumerable: true, get: function () { return Arrow_js_1.Table; } });
+Object.defineProperty(exports, "makeTable", { enumerable: true, get: function () { return Arrow_js_1.makeTable; } });
+Object.defineProperty(exports, "tableFromArrays", { enumerable: true, get: function () { return Arrow_js_1.tableFromArrays; } });
+Object.defineProperty(exports, "Schema", { enumerable: true, get: function () { return Arrow_js_1.Schema; } });
+Object.defineProperty(exports, "Field", { enumerable: true, get: function () { return Arrow_js_1.Field; } });
+Object.defineProperty(exports, "Visitor", { enumerable: true, get: function () { return Arrow_js_1.Visitor; } });
+Object.defineProperty(exports, "Vector", { enumerable: true, get: function () { return Arrow_js_1.Vector; } });
+Object.defineProperty(exports, "makeVector", { enumerable: true, get: function () { return Arrow_js_1.makeVector; } });
+Object.defineProperty(exports, "vectorFromArray", { enumerable: true, get: function () { return Arrow_js_1.vectorFromArray; } });
+Object.defineProperty(exports, "tableFromJSON", { enumerable: true, get: function () { return Arrow_js_1.tableFromJSON; } });
+Object.defineProperty(exports, "ByteStream", { enumerable: true, get: function () { return Arrow_js_1.ByteStream; } });
+Object.defineProperty(exports, "AsyncByteStream", { enumerable: true, get: function () { return Arrow_js_1.AsyncByteStream; } });
+Object.defineProperty(exports, "AsyncByteQueue", { enumerable: true, get: function () { return Arrow_js_1.AsyncByteQueue; } });
+Object.defineProperty(exports, "RecordBatchReader", { enumerable: true, get: function () { return Arrow_js_1.RecordBatchReader; } });
+Object.defineProperty(exports, "RecordBatchFileReader", { enumerable: true, get: function () { return Arrow_js_1.RecordBatchFileReader; } });
+Object.defineProperty(exports, "RecordBatchStreamReader", { enumerable: true, get: function () { return Arrow_js_1.RecordBatchStreamReader; } });
+Object.defineProperty(exports, "AsyncRecordBatchFileReader", { enumerable: true, get: function () { return Arrow_js_1.AsyncRecordBatchFileReader; } });
+Object.defineProperty(exports, "AsyncRecordBatchStreamReader", { enumerable: true, get: function () { return Arrow_js_1.AsyncRecordBatchStreamReader; } });
+Object.defineProperty(exports, "RecordBatchWriter", { enumerable: true, get: function () { return Arrow_js_1.RecordBatchWriter; } });
+Object.defineProperty(exports, "RecordBatchFileWriter", { enumerable: true, get: function () { return Arrow_js_1.RecordBatchFileWriter; } });
+Object.defineProperty(exports, "RecordBatchStreamWriter", { enumerable: true, get: function () { return Arrow_js_1.RecordBatchStreamWriter; } });
+Object.defineProperty(exports, "RecordBatchJSONWriter", { enumerable: true, get: function () { return Arrow_js_1.RecordBatchJSONWriter; } });
+Object.defineProperty(exports, "tableFromIPC", { enumerable: true, get: function () { return Arrow_js_1.tableFromIPC; } });
+Object.defineProperty(exports, "tableToIPC", { enumerable: true, get: function () { return Arrow_js_1.tableToIPC; } });
+Object.defineProperty(exports, "MessageReader", { enumerable: true, get: function () { return Arrow_js_1.MessageReader; } });
+Object.defineProperty(exports, "AsyncMessageReader", { enumerable: true, get: function () { return Arrow_js_1.AsyncMessageReader; } });
+Object.defineProperty(exports, "JSONMessageReader", { enumerable: true, get: function () { return Arrow_js_1.JSONMessageReader; } });
+Object.defineProperty(exports, "Message", { enumerable: true, get: function () { return Arrow_js_1.Message; } });
+Object.defineProperty(exports, "RecordBatch", { enumerable: true, get: function () { return Arrow_js_1.RecordBatch; } });
+Object.defineProperty(exports, "util", { enumerable: true, get: function () { return Arrow_js_1.util; } });
+Object.defineProperty(exports, "Builder", { enumerable: true, get: function () { return Arrow_js_1.Builder; } });
+Object.defineProperty(exports, "makeBuilder", { enumerable: true, get: function () { return Arrow_js_1.makeBuilder; } });
+Object.defineProperty(exports, "builderThroughIterable", { enumerable: true, get: function () { return Arrow_js_1.builderThroughIterable; } });
+Object.defineProperty(exports, "builderThroughAsyncIterable", { enumerable: true, get: function () { return Arrow_js_1.builderThroughAsyncIterable; } });
+var Arrow_js_2 = require("./Arrow.js");
+Object.defineProperty(exports, "BinaryBuilder", { enumerable: true, get: function () { return Arrow_js_2.BinaryBuilder; } });
+Object.defineProperty(exports, "BoolBuilder", { enumerable: true, get: function () { return Arrow_js_2.BoolBuilder; } });
+Object.defineProperty(exports, "DateBuilder", { enumerable: true, get: function () { return Arrow_js_2.DateBuilder; } });
+Object.defineProperty(exports, "DateDayBuilder", { enumerable: true, get: function () { return Arrow_js_2.DateDayBuilder; } });
+Object.defineProperty(exports, "DateMillisecondBuilder", { enumerable: true, get: function () { return Arrow_js_2.DateMillisecondBuilder; } });
+Object.defineProperty(exports, "DecimalBuilder", { enumerable: true, get: function () { return Arrow_js_2.DecimalBuilder; } });
+Object.defineProperty(exports, "DictionaryBuilder", { enumerable: true, get: function () { return Arrow_js_2.DictionaryBuilder; } });
+Object.defineProperty(exports, "FixedSizeBinaryBuilder", { enumerable: true, get: function () { return Arrow_js_2.FixedSizeBinaryBuilder; } });
+Object.defineProperty(exports, "FixedSizeListBuilder", { enumerable: true, get: function () { return Arrow_js_2.FixedSizeListBuilder; } });
+Object.defineProperty(exports, "FloatBuilder", { enumerable: true, get: function () { return Arrow_js_2.FloatBuilder; } });
+Object.defineProperty(exports, "Float16Builder", { enumerable: true, get: function () { return Arrow_js_2.Float16Builder; } });
+Object.defineProperty(exports, "Float32Builder", { enumerable: true, get: function () { return Arrow_js_2.Float32Builder; } });
+Object.defineProperty(exports, "Float64Builder", { enumerable: true, get: function () { return Arrow_js_2.Float64Builder; } });
+Object.defineProperty(exports, "IntervalBuilder", { enumerable: true, get: function () { return Arrow_js_2.IntervalBuilder; } });
+Object.defineProperty(exports, "IntervalDayTimeBuilder", { enumerable: true, get: function () { return Arrow_js_2.IntervalDayTimeBuilder; } });
+Object.defineProperty(exports, "IntervalYearMonthBuilder", { enumerable: true, get: function () { return Arrow_js_2.IntervalYearMonthBuilder; } });
+Object.defineProperty(exports, "IntBuilder", { enumerable: true, get: function () { return Arrow_js_2.IntBuilder; } });
+Object.defineProperty(exports, "Int8Builder", { enumerable: true, get: function () { return Arrow_js_2.Int8Builder; } });
+Object.defineProperty(exports, "Int16Builder", { enumerable: true, get: function () { return Arrow_js_2.Int16Builder; } });
+Object.defineProperty(exports, "Int32Builder", { enumerable: true, get: function () { return Arrow_js_2.Int32Builder; } });
+Object.defineProperty(exports, "Int64Builder", { enumerable: true, get: function () { return Arrow_js_2.Int64Builder; } });
+Object.defineProperty(exports, "Uint8Builder", { enumerable: true, get: function () { return Arrow_js_2.Uint8Builder; } });
+Object.defineProperty(exports, "Uint16Builder", { enumerable: true, get: function () { return Arrow_js_2.Uint16Builder; } });
+Object.defineProperty(exports, "Uint32Builder", { enumerable: true, get: function () { return Arrow_js_2.Uint32Builder; } });
+Object.defineProperty(exports, "Uint64Builder", { enumerable: true, get: function () { return Arrow_js_2.Uint64Builder; } });
+Object.defineProperty(exports, "ListBuilder", { enumerable: true, get: function () { return Arrow_js_2.ListBuilder; } });
+Object.defineProperty(exports, "MapBuilder", { enumerable: true, get: function () { return Arrow_js_2.MapBuilder; } });
+Object.defineProperty(exports, "NullBuilder", { enumerable: true, get: function () { return Arrow_js_2.NullBuilder; } });
+Object.defineProperty(exports, "StructBuilder", { enumerable: true, get: function () { return Arrow_js_2.StructBuilder; } });
+Object.defineProperty(exports, "TimestampBuilder", { enumerable: true, get: function () { return Arrow_js_2.TimestampBuilder; } });
+Object.defineProperty(exports, "TimestampSecondBuilder", { enumerable: true, get: function () { return Arrow_js_2.TimestampSecondBuilder; } });
+Object.defineProperty(exports, "TimestampMillisecondBuilder", { enumerable: true, get: function () { return Arrow_js_2.TimestampMillisecondBuilder; } });
+Object.defineProperty(exports, "TimestampMicrosecondBuilder", { enumerable: true, get: function () { return Arrow_js_2.TimestampMicrosecondBuilder; } });
+Object.defineProperty(exports, "TimestampNanosecondBuilder", { enumerable: true, get: function () { return Arrow_js_2.TimestampNanosecondBuilder; } });
+Object.defineProperty(exports, "TimeBuilder", { enumerable: true, get: function () { return Arrow_js_2.TimeBuilder; } });
+Object.defineProperty(exports, "TimeSecondBuilder", { enumerable: true, get: function () { return Arrow_js_2.TimeSecondBuilder; } });
+Object.defineProperty(exports, "TimeMillisecondBuilder", { enumerable: true, get: function () { return Arrow_js_2.TimeMillisecondBuilder; } });
+Object.defineProperty(exports, "TimeMicrosecondBuilder", { enumerable: true, get: function () { return Arrow_js_2.TimeMicrosecondBuilder; } });
+Object.defineProperty(exports, "TimeNanosecondBuilder", { enumerable: true, get: function () { return Arrow_js_2.TimeNanosecondBuilder; } });
+Object.defineProperty(exports, "UnionBuilder", { enumerable: true, get: function () { return Arrow_js_2.UnionBuilder; } });
+Object.defineProperty(exports, "DenseUnionBuilder", { enumerable: true, get: function () { return Arrow_js_2.DenseUnionBuilder; } });
+Object.defineProperty(exports, "SparseUnionBuilder", { enumerable: true, get: function () { return Arrow_js_2.SparseUnionBuilder; } });
+Object.defineProperty(exports, "Utf8Builder", { enumerable: true, get: function () { return Arrow_js_2.Utf8Builder; } });
+
+//# sourceMappingURL=Arrow.dom.js.map
diff --git a/igv_component/node_modules/apache-arrow/Arrow.dom.js.map b/igv_component/node_modules/apache-arrow/Arrow.dom.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..c4599ceb7cf60631315f8cf1d09ba51c67bfda4a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.dom.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/Arrow.dom.mjs b/igv_component/node_modules/apache-arrow/Arrow.dom.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..ffd4db78cda90eb8edbff4ce53fecc4a185537fb
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.dom.mjs
@@ -0,0 +1,36 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import streamAdapters from './io/adapters.mjs';
+import { Builder } from './builder.mjs';
+import { RecordBatchReader, RecordBatchFileReader, RecordBatchStreamReader, } from './ipc/reader.mjs';
+import { RecordBatchWriter, RecordBatchFileWriter, RecordBatchStreamWriter, } from './ipc/writer.mjs';
+import { toDOMStream } from './io/whatwg/iterable.mjs';
+import { builderThroughDOMStream } from './io/whatwg/builder.mjs';
+import { recordBatchReaderThroughDOMStream } from './io/whatwg/reader.mjs';
+import { recordBatchWriterThroughDOMStream } from './io/whatwg/writer.mjs';
+streamAdapters.toDOMStream = toDOMStream;
+Builder['throughDOM'] = builderThroughDOMStream;
+RecordBatchReader['throughDOM'] = recordBatchReaderThroughDOMStream;
+RecordBatchFileReader['throughDOM'] = recordBatchReaderThroughDOMStream;
+RecordBatchStreamReader['throughDOM'] = recordBatchReaderThroughDOMStream;
+RecordBatchWriter['throughDOM'] = recordBatchWriterThroughDOMStream;
+RecordBatchFileWriter['throughDOM'] = recordBatchWriterThroughDOMStream;
+RecordBatchStreamWriter['throughDOM'] = recordBatchWriterThroughDOMStream;
+export { DateUnit, IntervalUnit, MessageHeader, MetadataVersion, Precision, TimeUnit, Type, UnionMode, BufferType, Data, makeData, DataType, Null, Bool, Int, Int8, Int16, Int32, Int64, Uint8, Uint16, Uint32, Uint64, Float, Float16, Float32, Float64, Utf8, Binary, FixedSizeBinary, Date_, DateDay, DateMillisecond, Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond, Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond, Decimal, List, Struct, StructRow, Union, DenseUnion, SparseUnion, Dictionary, Interval, IntervalDayTime, IntervalYearMonth, FixedSizeList, Map_, MapRow, Table, makeTable, tableFromArrays, Schema, Field, Visitor, Vector, makeVector, vectorFromArray, tableFromJSON, ByteStream, AsyncByteStream, AsyncByteQueue, RecordBatchReader, RecordBatchFileReader, RecordBatchStreamReader, AsyncRecordBatchFileReader, AsyncRecordBatchStreamReader, RecordBatchWriter, RecordBatchFileWriter, RecordBatchStreamWriter, RecordBatchJSONWriter, tableFromIPC, tableToIPC, MessageReader, AsyncMessageReader, JSONMessageReader, Message, RecordBatch, util, Builder, makeBuilder, builderThroughIterable, builderThroughAsyncIterable, } from './Arrow.mjs';
+export { BinaryBuilder, BoolBuilder, DateBuilder, DateDayBuilder, DateMillisecondBuilder, DecimalBuilder, DictionaryBuilder, FixedSizeBinaryBuilder, FixedSizeListBuilder, FloatBuilder, Float16Builder, Float32Builder, Float64Builder, IntervalBuilder, IntervalDayTimeBuilder, IntervalYearMonthBuilder, IntBuilder, Int8Builder, Int16Builder, Int32Builder, Int64Builder, Uint8Builder, Uint16Builder, Uint32Builder, Uint64Builder, ListBuilder, MapBuilder, NullBuilder, StructBuilder, TimestampBuilder, TimestampSecondBuilder, TimestampMillisecondBuilder, TimestampMicrosecondBuilder, TimestampNanosecondBuilder, TimeBuilder, TimeSecondBuilder, TimeMillisecondBuilder, TimeMicrosecondBuilder, TimeNanosecondBuilder, UnionBuilder, DenseUnionBuilder, SparseUnionBuilder, Utf8Builder, } from './Arrow.mjs';
+
+//# sourceMappingURL=Arrow.dom.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/Arrow.dom.mjs.map b/igv_component/node_modules/apache-arrow/Arrow.dom.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..65e7609118658e54f862147e2e54224aeda8b56c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.dom.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["Arrow.dom.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,cAAc,MAAM,kBAAkB,CAAC;AAC9C,OAAO,EAAE,OAAO,EAAE,MAAM,cAAc,CAAC;AACvC,OAAO,EAAE,iBAAiB,EAAE,qBAAqB,EAAE,uBAAuB,GAAG,MAAM,iBAAiB,CAAC;AACrG,OAAO,EAAE,iBAAiB,EAAE,qBAAqB,EAAE,uBAAuB,GAAG,MAAM,iBAAiB,CAAC;AACrG,OAAO,EAAE,WAAW,EAAE,MAAM,yBAAyB,CAAC;AACtD,OAAO,EAAE,uBAAuB,EAAE,MAAM,wBAAwB,CAAC;AACjE,OAAO,EAAE,iCAAiC,EAAE,MAAM,uBAAuB,CAAC;AAC1E,OAAO,EAAE,iCAAiC,EAAE,MAAM,uBAAuB,CAAC;AAE1E,cAAc,CAAC,WAAW,GAAG,WAAW,CAAC;AACzC,OAAO,CAAC,YAAY,CAAC,GAAG,uBAAuB,CAAC;AAChD,iBAAiB,CAAC,YAAY,CAAC,GAAG,iCAAiC,CAAC;AACpE,qBAAqB,CAAC,YAAY,CAAC,GAAG,iCAAiC,CAAC;AACxE,uBAAuB,CAAC,YAAY,CAAC,GAAG,iCAAiC,CAAC;AAC1E,iBAAiB,CAAC,YAAY,CAAC,GAAG,iCAAiC,CAAC;AACpE,qBAAqB,CAAC,YAAY,CAAC,GAAG,iCAAiC,CAAC;AACxE,uBAAuB,CAAC,YAAY,CAAC,GAAG,iCAAiC,CAAC;AAQ1E,OAAO,EACH,QAAQ,EAAE,YAAY,EAAE,aAAa,EAAE,eAAe,EAAE,SAAS,EAAE,QAAQ,EAAE,IAAI,EAAE,SAAS,EAAE,UAAU,EACxG,IAAI,EAAE,QAAQ,EACd,QAAQ,EACR,IAAI,EACJ,IAAI,EACJ,GAAG,EAAE,IAAI,EAAE,KAAK,EAAE,KAAK,EAAE,KAAK,EAAE,KAAK,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,EAC7D,KAAK,EAAE,OAAO,EAAE,OAAO,EAAE,OAAO,EAChC,IAAI,EACJ,MAAM,EACN,eAAe,EACf,KAAK,EAAE,OAAO,EAAE,eAAe,EAC/B,SAAS,EAAE,eAAe,EAAE,oBAAoB,EAAE,oBAAoB,EAAE,mBAAmB,EAC3F,IAAI,EAAE,UAAU,EAAE,eAAe,EAAE,eAAe,EAAE,cAAc,EAClE,OAAO,EACP,IAAI,EACJ,MAAM,EAAE,SAAS,EACjB,KAAK,EAAE,UAAU,EAAE,WAAW,EAC9B,UAAU,EACV,QAAQ,EAAE,eAAe,EAAE,iBAAiB,EAC5C,aAAa,EACb,IAAI,EAAE,MAAM,EACZ,KAAK,EAAE,SAAS,EAAE,eAAe,EACjC,MAAM,EAAE,KAAK,EACb,OAAO,EACP,MAAM,EAAE,UAAU,EAAE,eAAe,EAAE,aAAa,EAClD,UAAU,EAAE,eAAe,EAAE,cAAc,EAC3C,iBAAiB,EAAE,qBAAqB,EAAE,uBAAuB,EAAE,0BAA0B,EAAE,4BAA4B,EAC3H,iBAAiB,EAAE,qBAAqB,EAAE,uBAAuB,EAAE,qBAAqB,EACxF,YAAY,EAAE,UAAU,EACxB,aAAa,EAAE,kBAAkB,EAAE,iBAAiB,EACpD,OAAO,EACP,WAAW,EACX,IAAI,EACJ,OAAO,EAAE,WAAW,EAAE,sBAAsB,EAAE,2BAA2B,GAC5E,MAAM,YAAY,CAAC;AAEpB,OAAO,EACH,aAAa,EACb,WAAW,EACX,WAAW,EAAE,cAAc,EAAE,sBAAsB,EACnD,cAAc,EACd,iBAAiB,EACjB,sBAAsB,EACtB,oBAAoB,EACpB,YAAY,EAAE,cAAc,EAAE,cAAc,EAAE,cAAc,EAC5D,eAAe,EAAE,sBAAsB,EAAE,wBAAwB,EACjE,UAAU,EAAE,WAAW,EAAE,YAAY,EAAE,YAAY,EAAE,YAAY,EAAE,YAAY,EAAE,aAAa,EAAE,aAAa,EAAE,aAAa,EAC5H,WAAW,EACX,UAAU,EACV,WAAW,EACX,aAAa,EACb,gBAAgB,EAAE,sBAAsB,EAAE,2BAA2B,EAAE,2BAA2B,EAAE,0BAA0B,EAC9H,WAAW,EAAE,iBAAiB,EAAE,sBAAsB,EAAE,sBAAsB,EAAE,qBAAqB,EACrG,YAAY,EAAE,iBAAiB,EAAE,kBAAkB,EACnD,WAAW,GACd,MAAM,YAAY,CAAC","file":"Arrow.dom.js","sourceRoot":"src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/Arrow.es2015.min.js b/igv_component/node_modules/apache-arrow/Arrow.es2015.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..8d47d99483bd45e672c4d6ff6954c4b4cb869199
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.es2015.min.js
@@ -0,0 +1,348 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+(function (global, factory) {
+    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+    typeof define === 'function' && define.amd ? define(['exports'], factory) :
+    (factory(global.Arrow = global.Arrow || {}));
+}(this, (function (exports) {var h;function aa(a){var b=0;return function(){return b<a.length?{done:!1,value:a[b++]}:{done:!0}}}var ba="function"==typeof Object.defineProperties?Object.defineProperty:function(a,b,c){if(a==Array.prototype||a==Object.prototype)return a;a[b]=c.value;return a};
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const int32 = new Int32Array(2);\r\nexport const float32 = new Float32Array(int32.buffer);\r\nexport const float64 = new Float64Array(int32.buffer);\r\nexport const isLittleEndian = new Uint16Array(new Uint8Array([1, 0]).buffer)[0] === 1;\r\n","export function createLong(low, high) {\r\n    return Long.create(low, high);\r\n}\r\nexport class Long {\r\n    constructor(low, high) {\r\n        this.low = low | 0;\r\n        this.high = high | 0;\r\n    }\r\n    static create(low, high) {\r\n        // Special-case zero to avoid GC overhead for default values\r\n        return low == 0 && high == 0 ? Long.ZERO : new Long(low, high);\r\n    }\r\n    toFloat64() {\r\n        return (this.low >>> 0) + this.high * 0x100000000;\r\n    }\r\n    equals(other) {\r\n        return this.low == other.low && this.high == other.high;\r\n    }\r\n}\r\nLong.ZERO = new Long(0, 0);\r\n","export var Encoding;\r\n(function (Encoding) {\r\n    Encoding[Encoding[\"UTF8_BYTES\"] = 1] = \"UTF8_BYTES\";\r\n    Encoding[Encoding[\"UTF16_STRING\"] = 2] = \"UTF16_STRING\";\r\n})(Encoding || (Encoding = {}));\r\n","import { FILE_IDENTIFIER_LENGTH, SIZEOF_INT } from \"./constants\";\r\nimport { Long } from \"./long\";\r\nimport { int32, isLittleEndian, float32, float64 } from \"./utils\";\r\nimport { Encoding } from \"./encoding\";\r\nexport class ByteBuffer {\r\n    /**\r\n     * Create a new ByteBuffer with a given array of bytes (`Uint8Array`)\r\n     */\r\n    constructor(bytes_) {\r\n        this.bytes_ = bytes_;\r\n        this.position_ = 0;\r\n    }\r\n    /**\r\n     * Create and allocate a new ByteBuffer with a given size.\r\n     */\r\n    static allocate(byte_size) {\r\n        return new ByteBuffer(new Uint8Array(byte_size));\r\n    }\r\n    clear() {\r\n        this.position_ = 0;\r\n    }\r\n    /**\r\n     * Get the underlying `Uint8Array`.\r\n     */\r\n    bytes() {\r\n        return this.bytes_;\r\n    }\r\n    /**\r\n     * Get the buffer's position.\r\n     */\r\n    position() {\r\n        return this.position_;\r\n    }\r\n    /**\r\n     * Set the buffer's position.\r\n     */\r\n    setPosition(position) {\r\n        this.position_ = position;\r\n    }\r\n    /**\r\n     * Get the buffer's capacity.\r\n     */\r\n    capacity() {\r\n        return this.bytes_.length;\r\n    }\r\n    readInt8(offset) {\r\n        return this.readUint8(offset) << 24 >> 24;\r\n    }\r\n    readUint8(offset) {\r\n        return this.bytes_[offset];\r\n    }\r\n    readInt16(offset) {\r\n        return this.readUint16(offset) << 16 >> 16;\r\n    }\r\n    readUint16(offset) {\r\n        return this.bytes_[offset] | this.bytes_[offset + 1] << 8;\r\n    }\r\n    readInt32(offset) {\r\n        return this.bytes_[offset] | this.bytes_[offset + 1] << 8 | this.bytes_[offset + 2] << 16 | this.bytes_[offset + 3] << 24;\r\n    }\r\n    readUint32(offset) {\r\n        return this.readInt32(offset) >>> 0;\r\n    }\r\n    readInt64(offset) {\r\n        return new Long(this.readInt32(offset), this.readInt32(offset + 4));\r\n    }\r\n    readUint64(offset) {\r\n        return new Long(this.readUint32(offset), this.readUint32(offset + 4));\r\n    }\r\n    readFloat32(offset) {\r\n        int32[0] = this.readInt32(offset);\r\n        return float32[0];\r\n    }\r\n    readFloat64(offset) {\r\n        int32[isLittleEndian ? 0 : 1] = this.readInt32(offset);\r\n        int32[isLittleEndian ? 1 : 0] = this.readInt32(offset + 4);\r\n        return float64[0];\r\n    }\r\n    writeInt8(offset, value) {\r\n        this.bytes_[offset] = value;\r\n    }\r\n    writeUint8(offset, value) {\r\n        this.bytes_[offset] = value;\r\n    }\r\n    writeInt16(offset, value) {\r\n        this.bytes_[offset] = value;\r\n        this.bytes_[offset + 1] = value >> 8;\r\n    }\r\n    writeUint16(offset, value) {\r\n        this.bytes_[offset] = value;\r\n        this.bytes_[offset + 1] = value >> 8;\r\n    }\r\n    writeInt32(offset, value) {\r\n        this.bytes_[offset] = value;\r\n        this.bytes_[offset + 1] = value >> 8;\r\n        this.bytes_[offset + 2] = value >> 16;\r\n        this.bytes_[offset + 3] = value >> 24;\r\n    }\r\n    writeUint32(offset, value) {\r\n        this.bytes_[offset] = value;\r\n        this.bytes_[offset + 1] = value >> 8;\r\n        this.bytes_[offset + 2] = value >> 16;\r\n        this.bytes_[offset + 3] = value >> 24;\r\n    }\r\n    writeInt64(offset, value) {\r\n        this.writeInt32(offset, value.low);\r\n        this.writeInt32(offset + 4, value.high);\r\n    }\r\n    writeUint64(offset, value) {\r\n        this.writeUint32(offset, value.low);\r\n        this.writeUint32(offset + 4, value.high);\r\n    }\r\n    writeFloat32(offset, value) {\r\n        float32[0] = value;\r\n        this.writeInt32(offset, int32[0]);\r\n    }\r\n    writeFloat64(offset, value) {\r\n        float64[0] = value;\r\n        this.writeInt32(offset, int32[isLittleEndian ? 0 : 1]);\r\n        this.writeInt32(offset + 4, int32[isLittleEndian ? 1 : 0]);\r\n    }\r\n    /**\r\n     * Return the file identifier.   Behavior is undefined for FlatBuffers whose\r\n     * schema does not include a file_identifier (likely points at padding or the\r\n     * start of a the root vtable).\r\n     */\r\n    getBufferIdentifier() {\r\n        if (this.bytes_.length < this.position_ + SIZEOF_INT +\r\n            FILE_IDENTIFIER_LENGTH) {\r\n            throw new Error('FlatBuffers: ByteBuffer is too short to contain an identifier.');\r\n        }\r\n        let result = \"\";\r\n        for (let i = 0; i < FILE_IDENTIFIER_LENGTH; i++) {\r\n            result += String.fromCharCode(this.readInt8(this.position_ + SIZEOF_INT + i));\r\n        }\r\n        return result;\r\n    }\r\n    /**\r\n     * Look up a field in the vtable, return an offset into the object, or 0 if the\r\n     * field is not present.\r\n     */\r\n    __offset(bb_pos, vtable_offset) {\r\n        const vtable = bb_pos - this.readInt32(bb_pos);\r\n        return vtable_offset < this.readInt16(vtable) ? this.readInt16(vtable + vtable_offset) : 0;\r\n    }\r\n    /**\r\n     * Initialize any Table-derived type to point to the union at the given offset.\r\n     */\r\n    __union(t, offset) {\r\n        t.bb_pos = offset + this.readInt32(offset);\r\n        t.bb = this;\r\n        return t;\r\n    }\r\n    /**\r\n     * Create a JavaScript string from UTF-8 data stored inside the FlatBuffer.\r\n     * This allocates a new string and converts to wide chars upon each access.\r\n     *\r\n     * To avoid the conversion to UTF-16, pass Encoding.UTF8_BYTES as\r\n     * the \"optionalEncoding\" argument. This is useful for avoiding conversion to\r\n     * and from UTF-16 when the data will just be packaged back up in another\r\n     * FlatBuffer later on.\r\n     *\r\n     * @param offset\r\n     * @param opt_encoding Defaults to UTF16_STRING\r\n     */\r\n    __string(offset, opt_encoding) {\r\n        offset += this.readInt32(offset);\r\n        const length = this.readInt32(offset);\r\n        let result = '';\r\n        let i = 0;\r\n        offset += SIZEOF_INT;\r\n        if (opt_encoding === Encoding.UTF8_BYTES) {\r\n            return this.bytes_.subarray(offset, offset + length);\r\n        }\r\n        while (i < length) {\r\n            let codePoint;\r\n            // Decode UTF-8\r\n            const a = this.readUint8(offset + i++);\r\n            if (a < 0xC0) {\r\n                codePoint = a;\r\n            }\r\n            else {\r\n                const b = this.readUint8(offset + i++);\r\n                if (a < 0xE0) {\r\n                    codePoint =\r\n                        ((a & 0x1F) << 6) |\r\n                            (b & 0x3F);\r\n                }\r\n                else {\r\n                    const c = this.readUint8(offset + i++);\r\n                    if (a < 0xF0) {\r\n                        codePoint =\r\n                            ((a & 0x0F) << 12) |\r\n                                ((b & 0x3F) << 6) |\r\n                                (c & 0x3F);\r\n                    }\r\n                    else {\r\n                        const d = this.readUint8(offset + i++);\r\n                        codePoint =\r\n                            ((a & 0x07) << 18) |\r\n                                ((b & 0x3F) << 12) |\r\n                                ((c & 0x3F) << 6) |\r\n                                (d & 0x3F);\r\n                    }\r\n                }\r\n            }\r\n            // Encode UTF-16\r\n            if (codePoint < 0x10000) {\r\n                result += String.fromCharCode(codePoint);\r\n            }\r\n            else {\r\n                codePoint -= 0x10000;\r\n                result += String.fromCharCode((codePoint >> 10) + 0xD800, (codePoint & ((1 << 10) - 1)) + 0xDC00);\r\n            }\r\n        }\r\n        return result;\r\n    }\r\n    /**\r\n     * Handle unions that can contain string as its member, if a Table-derived type then initialize it,\r\n     * if a string then return a new one\r\n     *\r\n     * WARNING: strings are immutable in JS so we can't change the string that the user gave us, this\r\n     * makes the behaviour of __union_with_string different compared to __union\r\n     */\r\n    __union_with_string(o, offset) {\r\n        if (typeof o === 'string') {\r\n            return this.__string(offset);\r\n        }\r\n        return this.__union(o, offset);\r\n    }\r\n    /**\r\n     * Retrieve the relative offset stored at \"offset\"\r\n     */\r\n    __indirect(offset) {\r\n        return offset + this.readInt32(offset);\r\n    }\r\n    /**\r\n     * Get the start of data of a vector whose offset is stored at \"offset\" in this object.\r\n     */\r\n    __vector(offset) {\r\n        return offset + this.readInt32(offset) + SIZEOF_INT; // data starts after the length\r\n    }\r\n    /**\r\n     * Get the length of a vector whose offset is stored at \"offset\" in this object.\r\n     */\r\n    __vector_len(offset) {\r\n        return this.readInt32(offset + this.readInt32(offset));\r\n    }\r\n    __has_identifier(ident) {\r\n        if (ident.length != FILE_IDENTIFIER_LENGTH) {\r\n            throw new Error('FlatBuffers: file identifier must be length ' +\r\n                FILE_IDENTIFIER_LENGTH);\r\n        }\r\n        for (let i = 0; i < FILE_IDENTIFIER_LENGTH; i++) {\r\n            if (ident.charCodeAt(i) != this.readInt8(this.position() + SIZEOF_INT + i)) {\r\n                return false;\r\n            }\r\n        }\r\n        return true;\r\n    }\r\n    /**\r\n     * A helper function to avoid generated code depending on this file directly.\r\n     */\r\n    createLong(low, high) {\r\n        return Long.create(low, high);\r\n    }\r\n    /**\r\n     * A helper function for generating list for obj api\r\n     */\r\n    createScalarList(listAccessor, listLength) {\r\n        const ret = [];\r\n        for (let i = 0; i < listLength; ++i) {\r\n            if (listAccessor(i) !== null) {\r\n                ret.push(listAccessor(i));\r\n            }\r\n        }\r\n        return ret;\r\n    }\r\n    /**\r\n     * A helper function for generating list for obj api\r\n     * @param listAccessor function that accepts an index and return data at that index\r\n     * @param listLength listLength\r\n     * @param res result list\r\n     */\r\n    createObjList(listAccessor, listLength) {\r\n        const ret = [];\r\n        for (let i = 0; i < listLength; ++i) {\r\n            const val = listAccessor(i);\r\n            if (val !== null) {\r\n                ret.push(val.unpack());\r\n            }\r\n        }\r\n        return ret;\r\n    }\r\n}\r\n","export const SIZEOF_SHORT = 2;\r\nexport const SIZEOF_INT = 4;\r\nexport const FILE_IDENTIFIER_LENGTH = 4;\r\nexport const SIZE_PREFIX_LENGTH = 4;\r\n","import { ByteBuffer } from \"./byte-buffer\";\r\nimport { SIZEOF_SHORT, SIZE_PREFIX_LENGTH, SIZEOF_INT, FILE_IDENTIFIER_LENGTH } from \"./constants\";\r\nimport { Long } from \"./long\";\r\nexport class Builder {\r\n    /**\r\n     * Create a FlatBufferBuilder.\r\n     */\r\n    constructor(opt_initial_size) {\r\n        /** Minimum alignment encountered so far. */\r\n        this.minalign = 1;\r\n        /** The vtable for the current table. */\r\n        this.vtable = null;\r\n        /** The amount of fields we're actually using. */\r\n        this.vtable_in_use = 0;\r\n        /** Whether we are currently serializing a table. */\r\n        this.isNested = false;\r\n        /** Starting offset of the current struct/table. */\r\n        this.object_start = 0;\r\n        /** List of offsets of all vtables. */\r\n        this.vtables = [];\r\n        /** For the current vector being built. */\r\n        this.vector_num_elems = 0;\r\n        /** False omits default values from the serialized data */\r\n        this.force_defaults = false;\r\n        this.string_maps = null;\r\n        let initial_size;\r\n        if (!opt_initial_size) {\r\n            initial_size = 1024;\r\n        }\r\n        else {\r\n            initial_size = opt_initial_size;\r\n        }\r\n        /**\r\n         * @type {ByteBuffer}\r\n         * @private\r\n         */\r\n        this.bb = ByteBuffer.allocate(initial_size);\r\n        this.space = initial_size;\r\n    }\r\n    clear() {\r\n        this.bb.clear();\r\n        this.space = this.bb.capacity();\r\n        this.minalign = 1;\r\n        this.vtable = null;\r\n        this.vtable_in_use = 0;\r\n        this.isNested = false;\r\n        this.object_start = 0;\r\n        this.vtables = [];\r\n        this.vector_num_elems = 0;\r\n        this.force_defaults = false;\r\n        this.string_maps = null;\r\n    }\r\n    /**\r\n     * In order to save space, fields that are set to their default value\r\n     * don't get serialized into the buffer. Forcing defaults provides a\r\n     * way to manually disable this optimization.\r\n     *\r\n     * @param forceDefaults true always serializes default values\r\n     */\r\n    forceDefaults(forceDefaults) {\r\n        this.force_defaults = forceDefaults;\r\n    }\r\n    /**\r\n     * Get the ByteBuffer representing the FlatBuffer. Only call this after you've\r\n     * called finish(). The actual data starts at the ByteBuffer's current position,\r\n     * not necessarily at 0.\r\n     */\r\n    dataBuffer() {\r\n        return this.bb;\r\n    }\r\n    /**\r\n     * Get the bytes representing the FlatBuffer. Only call this after you've\r\n     * called finish().\r\n     */\r\n    asUint8Array() {\r\n        return this.bb.bytes().subarray(this.bb.position(), this.bb.position() + this.offset());\r\n    }\r\n    /**\r\n     * Prepare to write an element of `size` after `additional_bytes` have been\r\n     * written, e.g. if you write a string, you need to align such the int length\r\n     * field is aligned to 4 bytes, and the string data follows it directly. If all\r\n     * you need to do is alignment, `additional_bytes` will be 0.\r\n     *\r\n     * @param size This is the of the new element to write\r\n     * @param additional_bytes The padding size\r\n     */\r\n    prep(size, additional_bytes) {\r\n        // Track the biggest thing we've ever aligned to.\r\n        if (size > this.minalign) {\r\n            this.minalign = size;\r\n        }\r\n        // Find the amount of alignment needed such that `size` is properly\r\n        // aligned after `additional_bytes`\r\n        const align_size = ((~(this.bb.capacity() - this.space + additional_bytes)) + 1) & (size - 1);\r\n        // Reallocate the buffer if needed.\r\n        while (this.space < align_size + size + additional_bytes) {\r\n            const old_buf_size = this.bb.capacity();\r\n            this.bb = Builder.growByteBuffer(this.bb);\r\n            this.space += this.bb.capacity() - old_buf_size;\r\n        }\r\n        this.pad(align_size);\r\n    }\r\n    pad(byte_size) {\r\n        for (let i = 0; i < byte_size; i++) {\r\n            this.bb.writeInt8(--this.space, 0);\r\n        }\r\n    }\r\n    writeInt8(value) {\r\n        this.bb.writeInt8(this.space -= 1, value);\r\n    }\r\n    writeInt16(value) {\r\n        this.bb.writeInt16(this.space -= 2, value);\r\n    }\r\n    writeInt32(value) {\r\n        this.bb.writeInt32(this.space -= 4, value);\r\n    }\r\n    writeInt64(value) {\r\n        this.bb.writeInt64(this.space -= 8, value);\r\n    }\r\n    writeFloat32(value) {\r\n        this.bb.writeFloat32(this.space -= 4, value);\r\n    }\r\n    writeFloat64(value) {\r\n        this.bb.writeFloat64(this.space -= 8, value);\r\n    }\r\n    /**\r\n     * Add an `int8` to the buffer, properly aligned, and grows the buffer (if necessary).\r\n     * @param value The `int8` to add the the buffer.\r\n     */\r\n    addInt8(value) {\r\n        this.prep(1, 0);\r\n        this.writeInt8(value);\r\n    }\r\n    /**\r\n     * Add an `int16` to the buffer, properly aligned, and grows the buffer (if necessary).\r\n     * @param value The `int16` to add the the buffer.\r\n     */\r\n    addInt16(value) {\r\n        this.prep(2, 0);\r\n        this.writeInt16(value);\r\n    }\r\n    /**\r\n     * Add an `int32` to the buffer, properly aligned, and grows the buffer (if necessary).\r\n     * @param value The `int32` to add the the buffer.\r\n     */\r\n    addInt32(value) {\r\n        this.prep(4, 0);\r\n        this.writeInt32(value);\r\n    }\r\n    /**\r\n     * Add an `int64` to the buffer, properly aligned, and grows the buffer (if necessary).\r\n     * @param value The `int64` to add the the buffer.\r\n     */\r\n    addInt64(value) {\r\n        this.prep(8, 0);\r\n        this.writeInt64(value);\r\n    }\r\n    /**\r\n     * Add a `float32` to the buffer, properly aligned, and grows the buffer (if necessary).\r\n     * @param value The `float32` to add the the buffer.\r\n     */\r\n    addFloat32(value) {\r\n        this.prep(4, 0);\r\n        this.writeFloat32(value);\r\n    }\r\n    /**\r\n     * Add a `float64` to the buffer, properly aligned, and grows the buffer (if necessary).\r\n     * @param value The `float64` to add the the buffer.\r\n     */\r\n    addFloat64(value) {\r\n        this.prep(8, 0);\r\n        this.writeFloat64(value);\r\n    }\r\n    addFieldInt8(voffset, value, defaultValue) {\r\n        if (this.force_defaults || value != defaultValue) {\r\n            this.addInt8(value);\r\n            this.slot(voffset);\r\n        }\r\n    }\r\n    addFieldInt16(voffset, value, defaultValue) {\r\n        if (this.force_defaults || value != defaultValue) {\r\n            this.addInt16(value);\r\n            this.slot(voffset);\r\n        }\r\n    }\r\n    addFieldInt32(voffset, value, defaultValue) {\r\n        if (this.force_defaults || value != defaultValue) {\r\n            this.addInt32(value);\r\n            this.slot(voffset);\r\n        }\r\n    }\r\n    addFieldInt64(voffset, value, defaultValue) {\r\n        if (this.force_defaults || !value.equals(defaultValue)) {\r\n            this.addInt64(value);\r\n            this.slot(voffset);\r\n        }\r\n    }\r\n    addFieldFloat32(voffset, value, defaultValue) {\r\n        if (this.force_defaults || value != defaultValue) {\r\n            this.addFloat32(value);\r\n            this.slot(voffset);\r\n        }\r\n    }\r\n    addFieldFloat64(voffset, value, defaultValue) {\r\n        if (this.force_defaults || value != defaultValue) {\r\n            this.addFloat64(value);\r\n            this.slot(voffset);\r\n        }\r\n    }\r\n    addFieldOffset(voffset, value, defaultValue) {\r\n        if (this.force_defaults || value != defaultValue) {\r\n            this.addOffset(value);\r\n            this.slot(voffset);\r\n        }\r\n    }\r\n    /**\r\n     * Structs are stored inline, so nothing additional is being added. `d` is always 0.\r\n     */\r\n    addFieldStruct(voffset, value, defaultValue) {\r\n        if (value != defaultValue) {\r\n            this.nested(value);\r\n            this.slot(voffset);\r\n        }\r\n    }\r\n    /**\r\n     * Structures are always stored inline, they need to be created right\r\n     * where they're used.  You'll get this assertion failure if you\r\n     * created it elsewhere.\r\n     */\r\n    nested(obj) {\r\n        if (obj != this.offset()) {\r\n            throw new Error('FlatBuffers: struct must be serialized inline.');\r\n        }\r\n    }\r\n    /**\r\n     * Should not be creating any other object, string or vector\r\n     * while an object is being constructed\r\n     */\r\n    notNested() {\r\n        if (this.isNested) {\r\n            throw new Error('FlatBuffers: object serialization must not be nested.');\r\n        }\r\n    }\r\n    /**\r\n     * Set the current vtable at `voffset` to the current location in the buffer.\r\n     */\r\n    slot(voffset) {\r\n        if (this.vtable !== null)\r\n            this.vtable[voffset] = this.offset();\r\n    }\r\n    /**\r\n     * @returns Offset relative to the end of the buffer.\r\n     */\r\n    offset() {\r\n        return this.bb.capacity() - this.space;\r\n    }\r\n    /**\r\n     * Doubles the size of the backing ByteBuffer and copies the old data towards\r\n     * the end of the new buffer (since we build the buffer backwards).\r\n     *\r\n     * @param bb The current buffer with the existing data\r\n     * @returns A new byte buffer with the old data copied\r\n     * to it. The data is located at the end of the buffer.\r\n     *\r\n     * uint8Array.set() formally takes {Array<number>|ArrayBufferView}, so to pass\r\n     * it a uint8Array we need to suppress the type check:\r\n     * @suppress {checkTypes}\r\n     */\r\n    static growByteBuffer(bb) {\r\n        const old_buf_size = bb.capacity();\r\n        // Ensure we don't grow beyond what fits in an int.\r\n        if (old_buf_size & 0xC0000000) {\r\n            throw new Error('FlatBuffers: cannot grow buffer beyond 2 gigabytes.');\r\n        }\r\n        const new_buf_size = old_buf_size << 1;\r\n        const nbb = ByteBuffer.allocate(new_buf_size);\r\n        nbb.setPosition(new_buf_size - old_buf_size);\r\n        nbb.bytes().set(bb.bytes(), new_buf_size - old_buf_size);\r\n        return nbb;\r\n    }\r\n    /**\r\n     * Adds on offset, relative to where it will be written.\r\n     *\r\n     * @param offset The offset to add.\r\n     */\r\n    addOffset(offset) {\r\n        this.prep(SIZEOF_INT, 0); // Ensure alignment is already done.\r\n        this.writeInt32(this.offset() - offset + SIZEOF_INT);\r\n    }\r\n    /**\r\n     * Start encoding a new object in the buffer.  Users will not usually need to\r\n     * call this directly. The FlatBuffers compiler will generate helper methods\r\n     * that call this method internally.\r\n     */\r\n    startObject(numfields) {\r\n        this.notNested();\r\n        if (this.vtable == null) {\r\n            this.vtable = [];\r\n        }\r\n        this.vtable_in_use = numfields;\r\n        for (let i = 0; i < numfields; i++) {\r\n            this.vtable[i] = 0; // This will push additional elements as needed\r\n        }\r\n        this.isNested = true;\r\n        this.object_start = this.offset();\r\n    }\r\n    /**\r\n     * Finish off writing the object that is under construction.\r\n     *\r\n     * @returns The offset to the object inside `dataBuffer`\r\n     */\r\n    endObject() {\r\n        if (this.vtable == null || !this.isNested) {\r\n            throw new Error('FlatBuffers: endObject called without startObject');\r\n        }\r\n        this.addInt32(0);\r\n        const vtableloc = this.offset();\r\n        // Trim trailing zeroes.\r\n        let i = this.vtable_in_use - 1;\r\n        // eslint-disable-next-line no-empty\r\n        for (; i >= 0 && this.vtable[i] == 0; i--) { }\r\n        const trimmed_size = i + 1;\r\n        // Write out the current vtable.\r\n        for (; i >= 0; i--) {\r\n            // Offset relative to the start of the table.\r\n            this.addInt16(this.vtable[i] != 0 ? vtableloc - this.vtable[i] : 0);\r\n        }\r\n        const standard_fields = 2; // The fields below:\r\n        this.addInt16(vtableloc - this.object_start);\r\n        const len = (trimmed_size + standard_fields) * SIZEOF_SHORT;\r\n        this.addInt16(len);\r\n        // Search for an existing vtable that matches the current one.\r\n        let existing_vtable = 0;\r\n        const vt1 = this.space;\r\n        outer_loop: for (i = 0; i < this.vtables.length; i++) {\r\n            const vt2 = this.bb.capacity() - this.vtables[i];\r\n            if (len == this.bb.readInt16(vt2)) {\r\n                for (let j = SIZEOF_SHORT; j < len; j += SIZEOF_SHORT) {\r\n                    if (this.bb.readInt16(vt1 + j) != this.bb.readInt16(vt2 + j)) {\r\n                        continue outer_loop;\r\n                    }\r\n                }\r\n                existing_vtable = this.vtables[i];\r\n                break;\r\n            }\r\n        }\r\n        if (existing_vtable) {\r\n            // Found a match:\r\n            // Remove the current vtable.\r\n            this.space = this.bb.capacity() - vtableloc;\r\n            // Point table to existing vtable.\r\n            this.bb.writeInt32(this.space, existing_vtable - vtableloc);\r\n        }\r\n        else {\r\n            // No match:\r\n            // Add the location of the current vtable to the list of vtables.\r\n            this.vtables.push(this.offset());\r\n            // Point table to current vtable.\r\n            this.bb.writeInt32(this.bb.capacity() - vtableloc, this.offset() - vtableloc);\r\n        }\r\n        this.isNested = false;\r\n        return vtableloc;\r\n    }\r\n    /**\r\n     * Finalize a buffer, poiting to the given `root_table`.\r\n     */\r\n    finish(root_table, opt_file_identifier, opt_size_prefix) {\r\n        const size_prefix = opt_size_prefix ? SIZE_PREFIX_LENGTH : 0;\r\n        if (opt_file_identifier) {\r\n            const file_identifier = opt_file_identifier;\r\n            this.prep(this.minalign, SIZEOF_INT +\r\n                FILE_IDENTIFIER_LENGTH + size_prefix);\r\n            if (file_identifier.length != FILE_IDENTIFIER_LENGTH) {\r\n                throw new Error('FlatBuffers: file identifier must be length ' +\r\n                    FILE_IDENTIFIER_LENGTH);\r\n            }\r\n            for (let i = FILE_IDENTIFIER_LENGTH - 1; i >= 0; i--) {\r\n                this.writeInt8(file_identifier.charCodeAt(i));\r\n            }\r\n        }\r\n        this.prep(this.minalign, SIZEOF_INT + size_prefix);\r\n        this.addOffset(root_table);\r\n        if (size_prefix) {\r\n            this.addInt32(this.bb.capacity() - this.space);\r\n        }\r\n        this.bb.setPosition(this.space);\r\n    }\r\n    /**\r\n     * Finalize a size prefixed buffer, pointing to the given `root_table`.\r\n     */\r\n    finishSizePrefixed(root_table, opt_file_identifier) {\r\n        this.finish(root_table, opt_file_identifier, true);\r\n    }\r\n    /**\r\n     * This checks a required field has been set in a given table that has\r\n     * just been constructed.\r\n     */\r\n    requiredField(table, field) {\r\n        const table_start = this.bb.capacity() - table;\r\n        const vtable_start = table_start - this.bb.readInt32(table_start);\r\n        const ok = this.bb.readInt16(vtable_start + field) != 0;\r\n        // If this fails, the caller will show what field needs to be set.\r\n        if (!ok) {\r\n            throw new Error('FlatBuffers: field ' + field + ' must be set');\r\n        }\r\n    }\r\n    /**\r\n     * Start a new array/vector of objects.  Users usually will not call\r\n     * this directly. The FlatBuffers compiler will create a start/end\r\n     * method for vector types in generated code.\r\n     *\r\n     * @param elem_size The size of each element in the array\r\n     * @param num_elems The number of elements in the array\r\n     * @param alignment The alignment of the array\r\n     */\r\n    startVector(elem_size, num_elems, alignment) {\r\n        this.notNested();\r\n        this.vector_num_elems = num_elems;\r\n        this.prep(SIZEOF_INT, elem_size * num_elems);\r\n        this.prep(alignment, elem_size * num_elems); // Just in case alignment > int.\r\n    }\r\n    /**\r\n     * Finish off the creation of an array and all its elements. The array must be\r\n     * created with `startVector`.\r\n     *\r\n     * @returns The offset at which the newly created array\r\n     * starts.\r\n     */\r\n    endVector() {\r\n        this.writeInt32(this.vector_num_elems);\r\n        return this.offset();\r\n    }\r\n    /**\r\n     * Encode the string `s` in the buffer using UTF-8. If the string passed has\r\n     * already been seen, we return the offset of the already written string\r\n     *\r\n     * @param s The string to encode\r\n     * @return The offset in the buffer where the encoded string starts\r\n     */\r\n    createSharedString(s) {\r\n        if (!s) {\r\n            return 0;\r\n        }\r\n        if (!this.string_maps) {\r\n            this.string_maps = new Map();\r\n        }\r\n        if (this.string_maps.has(s)) {\r\n            return this.string_maps.get(s);\r\n        }\r\n        const offset = this.createString(s);\r\n        this.string_maps.set(s, offset);\r\n        return offset;\r\n    }\r\n    /**\r\n     * Encode the string `s` in the buffer using UTF-8. If a Uint8Array is passed\r\n     * instead of a string, it is assumed to contain valid UTF-8 encoded data.\r\n     *\r\n     * @param s The string to encode\r\n     * @return The offset in the buffer where the encoded string starts\r\n     */\r\n    createString(s) {\r\n        if (!s) {\r\n            return 0;\r\n        }\r\n        let utf8;\r\n        if (s instanceof Uint8Array) {\r\n            utf8 = s;\r\n        }\r\n        else {\r\n            utf8 = [];\r\n            let i = 0;\r\n            while (i < s.length) {\r\n                let codePoint;\r\n                // Decode UTF-16\r\n                const a = s.charCodeAt(i++);\r\n                if (a < 0xD800 || a >= 0xDC00) {\r\n                    codePoint = a;\r\n                }\r\n                else {\r\n                    const b = s.charCodeAt(i++);\r\n                    codePoint = (a << 10) + b + (0x10000 - (0xD800 << 10) - 0xDC00);\r\n                }\r\n                // Encode UTF-8\r\n                if (codePoint < 0x80) {\r\n                    utf8.push(codePoint);\r\n                }\r\n                else {\r\n                    if (codePoint < 0x800) {\r\n                        utf8.push(((codePoint >> 6) & 0x1F) | 0xC0);\r\n                    }\r\n                    else {\r\n                        if (codePoint < 0x10000) {\r\n                            utf8.push(((codePoint >> 12) & 0x0F) | 0xE0);\r\n                        }\r\n                        else {\r\n                            utf8.push(((codePoint >> 18) & 0x07) | 0xF0, ((codePoint >> 12) & 0x3F) | 0x80);\r\n                        }\r\n                        utf8.push(((codePoint >> 6) & 0x3F) | 0x80);\r\n                    }\r\n                    utf8.push((codePoint & 0x3F) | 0x80);\r\n                }\r\n            }\r\n        }\r\n        this.addInt8(0);\r\n        this.startVector(1, utf8.length, 1);\r\n        this.bb.setPosition(this.space -= utf8.length);\r\n        for (let i = 0, offset = this.space, bytes = this.bb.bytes(); i < utf8.length; i++) {\r\n            bytes[offset++] = utf8[i];\r\n        }\r\n        return this.endVector();\r\n    }\r\n    /**\r\n     * A helper function to avoid generated code depending on this file directly.\r\n     */\r\n    createLong(low, high) {\r\n        return Long.create(low, high);\r\n    }\r\n    /**\r\n     * A helper function to pack an object\r\n     *\r\n     * @returns offset of obj\r\n     */\r\n    createObjectOffset(obj) {\r\n        if (obj === null) {\r\n            return 0;\r\n        }\r\n        if (typeof obj === 'string') {\r\n            return this.createString(obj);\r\n        }\r\n        else {\r\n            return obj.pack(this);\r\n        }\r\n    }\r\n    /**\r\n     * A helper function to pack a list of object\r\n     *\r\n     * @returns list of offsets of each non null object\r\n     */\r\n    createObjectOffsetList(list) {\r\n        const ret = [];\r\n        for (let i = 0; i < list.length; ++i) {\r\n            const val = list[i];\r\n            if (val !== null) {\r\n                ret.push(this.createObjectOffset(val));\r\n            }\r\n            else {\r\n                throw new Error('FlatBuffers: Argument for createObjectOffsetList cannot contain null.');\r\n            }\r\n        }\r\n        return ret;\r\n    }\r\n    createStructOffsetList(list, startFunc) {\r\n        startFunc(this, list.length);\r\n        this.createObjectOffsetList(list);\r\n        return this.endVector();\r\n    }\r\n}\r\n",null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,"import * as exports0 from './Arrow.dom.js';\nimport * as exports1 from './util/int.js';\nObject.assign(arguments[0], exports0);"]}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/Arrow.esnext.min.js b/igv_component/node_modules/apache-arrow/Arrow.esnext.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..8756910ef8ea3f735441eb7c3c627a70183e1a9f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.esnext.min.js
@@ -0,0 +1,326 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+(function (global, factory) {
+    typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+    typeof define === 'function' && define.amd ? define(['exports'], factory) :
+    (factory(global.Arrow = global.Arrow || {}));
+}(this, (function (exports) {var h;const aa=new TextDecoder("utf-8"),ba=a=>aa.decode(a),ca=new TextEncoder;const [,da]=(()=>{function a(){throw b();}const b=()=>{throw Error("BigInt is not available in this environment");};a.asIntN=()=>{throw b();};a.asUintN=()=>{throw b();};return"undefined"!==typeof BigInt?[BigInt,!0]:[a,!1]})(),[ea]=(()=>{const a=()=>{throw Error("BigInt64Array is not available in this environment");};class b{static get BYTES_PER_ELEMENT(){return 8}static of(){throw a();}static from(){throw a();}constructor(){throw a();}}return"undefined"!==typeof BigInt64Array?[BigInt64Array,!0]:[b,
+!1]})(),[fa]=(()=>{const a=()=>{throw Error("BigUint64Array is not available in this environment");};class b{static get BYTES_PER_ELEMENT(){return 8}static of(){throw a();}static from(){throw a();}constructor(){throw a();}}return"undefined"!==typeof BigUint64Array?[BigUint64Array,!0]:[b,!1]})(),l=a=>"function"===typeof a,m=a=>null!=a&&Object(a)===a,ha=a=>"_getDOMStream"in a&&"_getNodeStream"in a,ia=a=>m(a)&&l(a.cancel)&&l(a.getReader)&&!ha(a),ja=a=>m(a)&&l(a.read)&&l(a.pipe)&&"boolean"===typeof a.readable&&
+!ha(a);const ka="undefined"!==typeof SharedArrayBuffer?SharedArrayBuffer:ArrayBuffer;function la(a){const b=a[0]?[a[0]]:[];let c,d,e,f;for(let g,k,n=0,p=0,x=a.length;++n<x;)g=b[p],k=a[n],!g||!k||g.buffer!==k.buffer||k.byteOffset<g.byteOffset?k&&(b[++p]=k):({byteOffset:c,byteLength:e}=g,{byteOffset:d,byteLength:f}=k,c+e<d||d+f<c?k&&(b[++p]=k):b[p]=new Uint8Array(g.buffer,c,d-c+f));return b}
+function ma(a,b,c=0,d=b.byteLength){const e=a.byteLength,f=new Uint8Array(a.buffer,a.byteOffset,e);b=new Uint8Array(b.buffer,b.byteOffset,Math.min(d,e));f.set(b,c);return a}
+function na(a,b){a=la(a);const c=a.reduce((n,p)=>n+p.byteLength,0);let d,e,f=0,g=-1;const k=Math.min(b||Number.POSITIVE_INFINITY,c);for(const n=a.length;++g<n;){b=a[g];d=b.subarray(0,Math.min(b.length,k-f));if(k<=f+d.length){d.length<b.length?a[g]=b.subarray(d.length):d.length===b.length&&g++;e?ma(e,d,f):e=d;break}ma(e||=new Uint8Array(k),d,f);f+=d.length}return[e||new Uint8Array(0),a.slice(g),c-(e?e.byteLength:0)]}
+function q(a,b){b=m(b)&&"done"in b&&"value"in b?b.value:b;if(b instanceof a)return a===Uint8Array?new a(b.buffer,b.byteOffset,b.byteLength):b;if(!b)return new a(0);"string"===typeof b&&(b=ca.encode(b));return b instanceof ArrayBuffer||b instanceof ka?new a(b):m(b)&&l(b.clear)&&l(b.bytes)&&l(b.position)&&l(b.setPosition)&&l(b.capacity)&&l(b.getBufferIdentifier)&&l(b.createLong)?q(a,b.P()):ArrayBuffer.isView(b)?0>=b.byteLength?new a(0):new a(b.buffer,b.byteOffset,b.byteLength/a.BYTES_PER_ELEMENT):a.from(b)}
+const oa=a=>{a.next();return a};function*pa(a,b){function*c(d){yield d}b="string"===typeof b?c(b):ArrayBuffer.isView(b)?c(b):b instanceof ArrayBuffer?c(b):b instanceof ka?c(b):m(b)&&l(b[Symbol.iterator])?b:c(b);yield*oa(function*(d){let e=null;do e=d.next(yield q(a,e));while(!e.done)}(b[Symbol.iterator]()));return new a}
+async function*qa(a,b){async function*c(e){yield*oa(function*(f){let g=null;do g=f.next(yield g?.value);while(!g.done)}(e[Symbol.iterator]()))}async function*d(e){yield await e}if(m(b)&&l(b.then))return yield*qa(a,await b);b="string"===typeof b?d(b):ArrayBuffer.isView(b)?d(b):b instanceof ArrayBuffer?d(b):b instanceof ka?d(b):m(b)&&l(b[Symbol.iterator])?c(b):m(b)&&l(b[Symbol.asyncIterator])?b:d(b);yield*oa(async function*(e){let f=null;do f=await e.next(yield q(a,f));while(!f.done)}(b[Symbol.asyncIterator]()));
+return new a}function ra(a,b,c){if(0!==a){c=c.slice(0,b+1);for(let d=-1;++d<=b;)c[d]+=a}return c}function sa(a,b){let c=0;const d=a.length;if(d!==b.length)return!1;if(0<d){do if(a[c]!==b[c])return!1;while(++c<d)}return!0}var r={};r.compareArrayLike=sa;r.joinUint8Arrays=na;r.memcpy=ma;r.rebaseValueOffsets=ra;r.toArrayBufferView=q;r.toArrayBufferViewAsyncIterator=qa;r.toArrayBufferViewIterator=pa;r.toBigInt64Array=a=>q(ea,a);r.toBigUint64Array=a=>q(fa,a);r.toFloat32Array=a=>q(Float32Array,a);
+r.toFloat32ArrayAsyncIterator=a=>qa(Float32Array,a);r.toFloat32ArrayIterator=a=>pa(Float32Array,a);r.toFloat64Array=a=>q(Float64Array,a);r.toFloat64ArrayAsyncIterator=a=>qa(Float64Array,a);r.toFloat64ArrayIterator=a=>pa(Float64Array,a);r.toInt16Array=a=>q(Int16Array,a);r.toInt16ArrayAsyncIterator=a=>qa(Int16Array,a);r.toInt16ArrayIterator=a=>pa(Int16Array,a);r.toInt32Array=a=>q(Int32Array,a);r.toInt32ArrayAsyncIterator=a=>qa(Int32Array,a);r.toInt32ArrayIterator=a=>pa(Int32Array,a);
+r.toInt8Array=a=>q(Int8Array,a);r.toInt8ArrayAsyncIterator=a=>qa(Int8Array,a);r.toInt8ArrayIterator=a=>pa(Int8Array,a);r.toUint16Array=a=>q(Uint16Array,a);r.toUint16ArrayAsyncIterator=a=>qa(Uint16Array,a);r.toUint16ArrayIterator=a=>pa(Uint16Array,a);r.toUint32Array=a=>q(Uint32Array,a);r.toUint32ArrayAsyncIterator=a=>qa(Uint32Array,a);r.toUint32ArrayIterator=a=>pa(Uint32Array,a);r.toUint8Array=a=>q(Uint8Array,a);r.toUint8ArrayAsyncIterator=a=>qa(Uint8Array,a);
+r.toUint8ArrayIterator=a=>pa(Uint8Array,a);r.toUint8ClampedArray=a=>q(Uint8ClampedArray,a);r.toUint8ClampedArrayAsyncIterator=a=>qa(Uint8ClampedArray,a);r.toUint8ClampedArrayIterator=a=>pa(Uint8ClampedArray,a);function ta(){throw Error('"toDOMStream" not available in this environment');}function ua(){throw Error('"toNodeStream" not available in this environment');}const va=a=>{a.next();return a};
+function*wa(a){let b,c=!1,d=[],e,f,g,k=0;({X:f,size:g}=yield null);a=pa(Uint8Array,a)[Symbol.iterator]();try{do if({done:b,value:e}=Number.isNaN(g-k)?a.next():a.next(g-k),!b&&0<e.byteLength&&(d.push(e),k+=e.byteLength),b||g<=k){do{if("peek"===f)var n=na(d,g)[0];else[e,d,k]=na(d,g),n=e;({X:f,size:g}=yield n)}while(g<k)}while(!b)}catch(p){(c=!0,"function"===typeof a.throw)&&a.throw(p)}finally{!1===c&&"function"===typeof a.return&&a.return(null)}return null}
+async function*xa(a){let b,c=!1,d=[],e,f,g,k=0;({X:f,size:g}=yield null);a=qa(Uint8Array,a)[Symbol.asyncIterator]();try{do if({done:b,value:e}=Number.isNaN(g-k)?await a.next():await a.next(g-k),!b&&0<e.byteLength&&(d.push(e),k+=e.byteLength),b||g<=k){do{if("peek"===f)var n=na(d,g)[0];else[e,d,k]=na(d,g),n=e;({X:f,size:g}=yield n)}while(g<k)}while(!b)}catch(p){(c=!0,"function"===typeof a.throw)&&await a.throw(p)}finally{!1===c&&"function"===typeof a.return&&await a.return(new Uint8Array(0))}return null}
+async function*ya(a){let b=!1,c=!1,d=[],e,f,g,k=0;({X:f,size:g}=yield null);const n=new za(a);try{do if({done:b,value:e}=Number.isNaN(g-k)?await n.read():await n.read(g-k),!b&&0<e.byteLength&&(d.push(q(Uint8Array,e)),k+=e.byteLength),b||g<=k){do{if("peek"===f)var p=na(d,g)[0];else[e,d,k]=na(d,g),p=e;({X:f,size:g}=yield p)}while(g<k)}while(!b)}catch(x){c=!0,await n.cancel(x)}finally{!1===c?await n.cancel():a.locked&&n.releaseLock()}return null}
+class za{constructor(a){this.source=a;this.S=null;this.S=this.source.getReader();this.S.closed.catch(()=>{})}get closed(){return this.S?this.S.closed.catch(()=>{}):Promise.resolve()}releaseLock(){this.S&&this.S.releaseLock();this.S=null}async cancel(a){const b=this.S,c=this.source;b&&await b.cancel(a).catch(()=>{});c&&c.locked&&this.releaseLock()}async read(a){if(0===a)return{done:null==this.S,value:new Uint8Array(0)};a=await this.S.read();!a.done&&(a.value=q(Uint8Array,a));return a}}
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+class Xg extends Ug{constructor(a,b){super();this.position=0;this.I=a;"number"===typeof b?this.size=b:this.C=(async()=>{this.size=(await a.stat()).size;delete this.C})()}async s(a){const {buffer:b,byteOffset:c}=await this.ga(a,4);return(new DataView(b,c)).getInt32(0,!0)}async seek(a){this.C&&await this.C;this.position=Math.min(a,this.size);return a<this.size}async read(a){this.C&&await this.C;const b=this.I;var c=this.size,d=this.position;if(b&&d<c){"number"!==typeof a&&(a=Number.POSITIVE_INFINITY);
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const int32 = new Int32Array(2);\r\nexport const float32 = new Float32Array(int32.buffer);\r\nexport const float64 = new Float64Array(int32.buffer);\r\nexport const isLittleEndian = new Uint16Array(new Uint8Array([1, 0]).buffer)[0] === 1;\r\n","export function createLong(low, high) {\r\n    return Long.create(low, high);\r\n}\r\nexport class Long {\r\n    constructor(low, high) {\r\n        this.low = low | 0;\r\n        this.high = high | 0;\r\n    }\r\n    static create(low, high) {\r\n        // Special-case zero to avoid GC overhead for default values\r\n        return low == 0 && high == 0 ? Long.ZERO : new Long(low, high);\r\n    }\r\n    toFloat64() {\r\n        return (this.low >>> 0) + this.high * 0x100000000;\r\n    }\r\n    equals(other) {\r\n        return this.low == other.low && this.high == other.high;\r\n    }\r\n}\r\nLong.ZERO = new Long(0, 0);\r\n","export var Encoding;\r\n(function (Encoding) {\r\n    Encoding[Encoding[\"UTF8_BYTES\"] = 1] = \"UTF8_BYTES\";\r\n    Encoding[Encoding[\"UTF16_STRING\"] = 2] = \"UTF16_STRING\";\r\n})(Encoding || (Encoding = {}));\r\n","import { FILE_IDENTIFIER_LENGTH, SIZEOF_INT } from \"./constants\";\r\nimport { Long } from \"./long\";\r\nimport { int32, isLittleEndian, float32, float64 } from \"./utils\";\r\nimport { Encoding } from \"./encoding\";\r\nexport class ByteBuffer {\r\n    /**\r\n     * Create a new ByteBuffer with a given array of bytes (`Uint8Array`)\r\n     */\r\n    constructor(bytes_) {\r\n        this.bytes_ = bytes_;\r\n        this.position_ = 0;\r\n    }\r\n    /**\r\n     * Create and allocate a new ByteBuffer with a given size.\r\n     */\r\n    static allocate(byte_size) {\r\n        return new ByteBuffer(new Uint8Array(byte_size));\r\n    }\r\n    clear() {\r\n        this.position_ = 0;\r\n    }\r\n    /**\r\n     * Get the underlying `Uint8Array`.\r\n     */\r\n    bytes() {\r\n        return this.bytes_;\r\n    }\r\n    /**\r\n     * Get the buffer's position.\r\n     */\r\n    position() {\r\n        return this.position_;\r\n    }\r\n    /**\r\n     * Set the buffer's position.\r\n     */\r\n    setPosition(position) {\r\n        this.position_ = position;\r\n    }\r\n    /**\r\n     * Get the buffer's capacity.\r\n     */\r\n    capacity() {\r\n        return this.bytes_.length;\r\n    }\r\n    readInt8(offset) {\r\n        return this.readUint8(offset) << 24 >> 24;\r\n    }\r\n    readUint8(offset) {\r\n        return this.bytes_[offset];\r\n    }\r\n    readInt16(offset) {\r\n        return this.readUint16(offset) << 16 >> 16;\r\n    }\r\n    readUint16(offset) {\r\n        return this.bytes_[offset] | this.bytes_[offset + 1] << 8;\r\n    }\r\n    readInt32(offset) {\r\n        return this.bytes_[offset] | this.bytes_[offset + 1] << 8 | this.bytes_[offset + 2] << 16 | this.bytes_[offset + 3] << 24;\r\n    }\r\n    readUint32(offset) {\r\n        return this.readInt32(offset) >>> 0;\r\n    }\r\n    readInt64(offset) {\r\n        return new Long(this.readInt32(offset), this.readInt32(offset + 4));\r\n    }\r\n    readUint64(offset) {\r\n        return new Long(this.readUint32(offset), this.readUint32(offset + 4));\r\n    }\r\n    readFloat32(offset) {\r\n        int32[0] = this.readInt32(offset);\r\n        return float32[0];\r\n    }\r\n    readFloat64(offset) {\r\n        int32[isLittleEndian ? 0 : 1] = this.readInt32(offset);\r\n        int32[isLittleEndian ? 1 : 0] = this.readInt32(offset + 4);\r\n        return float64[0];\r\n    }\r\n    writeInt8(offset, value) {\r\n        this.bytes_[offset] = value;\r\n    }\r\n    writeUint8(offset, value) {\r\n        this.bytes_[offset] = value;\r\n    }\r\n    writeInt16(offset, value) {\r\n        this.bytes_[offset] = value;\r\n        this.bytes_[offset + 1] = value >> 8;\r\n    }\r\n    writeUint16(offset, value) {\r\n        this.bytes_[offset] = value;\r\n        this.bytes_[offset + 1] = value >> 8;\r\n    }\r\n    writeInt32(offset, value) {\r\n        this.bytes_[offset] = value;\r\n        this.bytes_[offset + 1] = value >> 8;\r\n        this.bytes_[offset + 2] = value >> 16;\r\n        this.bytes_[offset + 3] = value >> 24;\r\n    }\r\n    writeUint32(offset, value) {\r\n        this.bytes_[offset] = value;\r\n        this.bytes_[offset + 1] = value >> 8;\r\n        this.bytes_[offset + 2] = value >> 16;\r\n        this.bytes_[offset + 3] = value >> 24;\r\n    }\r\n    writeInt64(offset, value) {\r\n        this.writeInt32(offset, value.low);\r\n        this.writeInt32(offset + 4, value.high);\r\n    }\r\n    writeUint64(offset, value) {\r\n        this.writeUint32(offset, value.low);\r\n        this.writeUint32(offset + 4, value.high);\r\n    }\r\n    writeFloat32(offset, value) {\r\n        float32[0] = value;\r\n        this.writeInt32(offset, int32[0]);\r\n    }\r\n    writeFloat64(offset, value) {\r\n        float64[0] = value;\r\n        this.writeInt32(offset, int32[isLittleEndian ? 0 : 1]);\r\n        this.writeInt32(offset + 4, int32[isLittleEndian ? 1 : 0]);\r\n    }\r\n    /**\r\n     * Return the file identifier.   Behavior is undefined for FlatBuffers whose\r\n     * schema does not include a file_identifier (likely points at padding or the\r\n     * start of a the root vtable).\r\n     */\r\n    getBufferIdentifier() {\r\n        if (this.bytes_.length < this.position_ + SIZEOF_INT +\r\n            FILE_IDENTIFIER_LENGTH) {\r\n            throw new Error('FlatBuffers: ByteBuffer is too short to contain an identifier.');\r\n        }\r\n        let result = \"\";\r\n        for (let i = 0; i < FILE_IDENTIFIER_LENGTH; i++) {\r\n            result += String.fromCharCode(this.readInt8(this.position_ + SIZEOF_INT + i));\r\n        }\r\n        return result;\r\n    }\r\n    /**\r\n     * Look up a field in the vtable, return an offset into the object, or 0 if the\r\n     * field is not present.\r\n     */\r\n    __offset(bb_pos, vtable_offset) {\r\n        const vtable = bb_pos - this.readInt32(bb_pos);\r\n        return vtable_offset < this.readInt16(vtable) ? this.readInt16(vtable + vtable_offset) : 0;\r\n    }\r\n    /**\r\n     * Initialize any Table-derived type to point to the union at the given offset.\r\n     */\r\n    __union(t, offset) {\r\n        t.bb_pos = offset + this.readInt32(offset);\r\n        t.bb = this;\r\n        return t;\r\n    }\r\n    /**\r\n     * Create a JavaScript string from UTF-8 data stored inside the FlatBuffer.\r\n     * This allocates a new string and converts to wide chars upon each access.\r\n     *\r\n     * To avoid the conversion to UTF-16, pass Encoding.UTF8_BYTES as\r\n     * the \"optionalEncoding\" argument. This is useful for avoiding conversion to\r\n     * and from UTF-16 when the data will just be packaged back up in another\r\n     * FlatBuffer later on.\r\n     *\r\n     * @param offset\r\n     * @param opt_encoding Defaults to UTF16_STRING\r\n     */\r\n    __string(offset, opt_encoding) {\r\n        offset += this.readInt32(offset);\r\n        const length = this.readInt32(offset);\r\n        let result = '';\r\n        let i = 0;\r\n        offset += SIZEOF_INT;\r\n        if (opt_encoding === Encoding.UTF8_BYTES) {\r\n            return this.bytes_.subarray(offset, offset + length);\r\n        }\r\n        while (i < length) {\r\n            let codePoint;\r\n            // Decode UTF-8\r\n            const a = this.readUint8(offset + i++);\r\n            if (a < 0xC0) {\r\n                codePoint = a;\r\n            }\r\n            else {\r\n                const b = this.readUint8(offset + i++);\r\n                if (a < 0xE0) {\r\n                    codePoint =\r\n                        ((a & 0x1F) << 6) |\r\n                            (b & 0x3F);\r\n                }\r\n                else {\r\n                    const c = this.readUint8(offset + i++);\r\n                    if (a < 0xF0) {\r\n                        codePoint =\r\n                            ((a & 0x0F) << 12) |\r\n                                ((b & 0x3F) << 6) |\r\n                                (c & 0x3F);\r\n                    }\r\n                    else {\r\n                        const d = this.readUint8(offset + i++);\r\n                        codePoint =\r\n                            ((a & 0x07) << 18) |\r\n                                ((b & 0x3F) << 12) |\r\n                                ((c & 0x3F) << 6) |\r\n                                (d & 0x3F);\r\n                    }\r\n                }\r\n            }\r\n            // Encode UTF-16\r\n            if (codePoint < 0x10000) {\r\n                result += String.fromCharCode(codePoint);\r\n            }\r\n            else {\r\n                codePoint -= 0x10000;\r\n                result += String.fromCharCode((codePoint >> 10) + 0xD800, (codePoint & ((1 << 10) - 1)) + 0xDC00);\r\n            }\r\n        }\r\n        return result;\r\n    }\r\n    /**\r\n     * Handle unions that can contain string as its member, if a Table-derived type then initialize it,\r\n     * if a string then return a new one\r\n     *\r\n     * WARNING: strings are immutable in JS so we can't change the string that the user gave us, this\r\n     * makes the behaviour of __union_with_string different compared to __union\r\n     */\r\n    __union_with_string(o, offset) {\r\n        if (typeof o === 'string') {\r\n            return this.__string(offset);\r\n        }\r\n        return this.__union(o, offset);\r\n    }\r\n    /**\r\n     * Retrieve the relative offset stored at \"offset\"\r\n     */\r\n    __indirect(offset) {\r\n        return offset + this.readInt32(offset);\r\n    }\r\n    /**\r\n     * Get the start of data of a vector whose offset is stored at \"offset\" in this object.\r\n     */\r\n    __vector(offset) {\r\n        return offset + this.readInt32(offset) + SIZEOF_INT; // data starts after the length\r\n    }\r\n    /**\r\n     * Get the length of a vector whose offset is stored at \"offset\" in this object.\r\n     */\r\n    __vector_len(offset) {\r\n        return this.readInt32(offset + this.readInt32(offset));\r\n    }\r\n    __has_identifier(ident) {\r\n        if (ident.length != FILE_IDENTIFIER_LENGTH) {\r\n            throw new Error('FlatBuffers: file identifier must be length ' +\r\n                FILE_IDENTIFIER_LENGTH);\r\n        }\r\n        for (let i = 0; i < FILE_IDENTIFIER_LENGTH; i++) {\r\n            if (ident.charCodeAt(i) != this.readInt8(this.position() + SIZEOF_INT + i)) {\r\n                return false;\r\n            }\r\n        }\r\n        return true;\r\n    }\r\n    /**\r\n     * A helper function to avoid generated code depending on this file directly.\r\n     */\r\n    createLong(low, high) {\r\n        return Long.create(low, high);\r\n    }\r\n    /**\r\n     * A helper function for generating list for obj api\r\n     */\r\n    createScalarList(listAccessor, listLength) {\r\n        const ret = [];\r\n        for (let i = 0; i < listLength; ++i) {\r\n            if (listAccessor(i) !== null) {\r\n                ret.push(listAccessor(i));\r\n            }\r\n        }\r\n        return ret;\r\n    }\r\n    /**\r\n     * A helper function for generating list for obj api\r\n     * @param listAccessor function that accepts an index and return data at that index\r\n     * @param listLength listLength\r\n     * @param res result list\r\n     */\r\n    createObjList(listAccessor, listLength) {\r\n        const ret = [];\r\n        for (let i = 0; i < listLength; ++i) {\r\n            const val = listAccessor(i);\r\n            if (val !== null) {\r\n                ret.push(val.unpack());\r\n            }\r\n        }\r\n        return ret;\r\n    }\r\n}\r\n","export const SIZEOF_SHORT = 2;\r\nexport const SIZEOF_INT = 4;\r\nexport const FILE_IDENTIFIER_LENGTH = 4;\r\nexport const SIZE_PREFIX_LENGTH = 4;\r\n","import { ByteBuffer } from \"./byte-buffer\";\r\nimport { SIZEOF_SHORT, SIZE_PREFIX_LENGTH, SIZEOF_INT, FILE_IDENTIFIER_LENGTH } from \"./constants\";\r\nimport { Long } from \"./long\";\r\nexport class Builder {\r\n    /**\r\n     * Create a FlatBufferBuilder.\r\n     */\r\n    constructor(opt_initial_size) {\r\n        /** Minimum alignment encountered so far. */\r\n        this.minalign = 1;\r\n        /** The vtable for the current table. */\r\n        this.vtable = null;\r\n        /** The amount of fields we're actually using. */\r\n        this.vtable_in_use = 0;\r\n        /** Whether we are currently serializing a table. */\r\n        this.isNested = false;\r\n        /** Starting offset of the current struct/table. */\r\n        this.object_start = 0;\r\n        /** List of offsets of all vtables. */\r\n        this.vtables = [];\r\n        /** For the current vector being built. */\r\n        this.vector_num_elems = 0;\r\n        /** False omits default values from the serialized data */\r\n        this.force_defaults = false;\r\n        this.string_maps = null;\r\n        let initial_size;\r\n        if (!opt_initial_size) {\r\n            initial_size = 1024;\r\n        }\r\n        else {\r\n            initial_size = opt_initial_size;\r\n        }\r\n        /**\r\n         * @type {ByteBuffer}\r\n         * @private\r\n         */\r\n        this.bb = ByteBuffer.allocate(initial_size);\r\n        this.space = initial_size;\r\n    }\r\n    clear() {\r\n        this.bb.clear();\r\n        this.space = this.bb.capacity();\r\n        this.minalign = 1;\r\n        this.vtable = null;\r\n        this.vtable_in_use = 0;\r\n        this.isNested = false;\r\n        this.object_start = 0;\r\n        this.vtables = [];\r\n        this.vector_num_elems = 0;\r\n        this.force_defaults = false;\r\n        this.string_maps = null;\r\n    }\r\n    /**\r\n     * In order to save space, fields that are set to their default value\r\n     * don't get serialized into the buffer. Forcing defaults provides a\r\n     * way to manually disable this optimization.\r\n     *\r\n     * @param forceDefaults true always serializes default values\r\n     */\r\n    forceDefaults(forceDefaults) {\r\n        this.force_defaults = forceDefaults;\r\n    }\r\n    /**\r\n     * Get the ByteBuffer representing the FlatBuffer. Only call this after you've\r\n     * called finish(). The actual data starts at the ByteBuffer's current position,\r\n     * not necessarily at 0.\r\n     */\r\n    dataBuffer() {\r\n        return this.bb;\r\n    }\r\n    /**\r\n     * Get the bytes representing the FlatBuffer. Only call this after you've\r\n     * called finish().\r\n     */\r\n    asUint8Array() {\r\n        return this.bb.bytes().subarray(this.bb.position(), this.bb.position() + this.offset());\r\n    }\r\n    /**\r\n     * Prepare to write an element of `size` after `additional_bytes` have been\r\n     * written, e.g. if you write a string, you need to align such the int length\r\n     * field is aligned to 4 bytes, and the string data follows it directly. If all\r\n     * you need to do is alignment, `additional_bytes` will be 0.\r\n     *\r\n     * @param size This is the of the new element to write\r\n     * @param additional_bytes The padding size\r\n     */\r\n    prep(size, additional_bytes) {\r\n        // Track the biggest thing we've ever aligned to.\r\n        if (size > this.minalign) {\r\n            this.minalign = size;\r\n        }\r\n        // Find the amount of alignment needed such that `size` is properly\r\n        // aligned after `additional_bytes`\r\n        const align_size = ((~(this.bb.capacity() - this.space + additional_bytes)) + 1) & (size - 1);\r\n        // Reallocate the buffer if needed.\r\n        while (this.space < align_size + size + additional_bytes) {\r\n            const old_buf_size = this.bb.capacity();\r\n            this.bb = Builder.growByteBuffer(this.bb);\r\n            this.space += this.bb.capacity() - old_buf_size;\r\n        }\r\n        this.pad(align_size);\r\n    }\r\n    pad(byte_size) {\r\n        for (let i = 0; i < byte_size; i++) {\r\n            this.bb.writeInt8(--this.space, 0);\r\n        }\r\n    }\r\n    writeInt8(value) {\r\n        this.bb.writeInt8(this.space -= 1, value);\r\n    }\r\n    writeInt16(value) {\r\n        this.bb.writeInt16(this.space -= 2, value);\r\n    }\r\n    writeInt32(value) {\r\n        this.bb.writeInt32(this.space -= 4, value);\r\n    }\r\n    writeInt64(value) {\r\n        this.bb.writeInt64(this.space -= 8, value);\r\n    }\r\n    writeFloat32(value) {\r\n        this.bb.writeFloat32(this.space -= 4, value);\r\n    }\r\n    writeFloat64(value) {\r\n        this.bb.writeFloat64(this.space -= 8, value);\r\n    }\r\n    /**\r\n     * Add an `int8` to the buffer, properly aligned, and grows the buffer (if necessary).\r\n     * @param value The `int8` to add the the buffer.\r\n     */\r\n    addInt8(value) {\r\n        this.prep(1, 0);\r\n        this.writeInt8(value);\r\n    }\r\n    /**\r\n     * Add an `int16` to the buffer, properly aligned, and grows the buffer (if necessary).\r\n     * @param value The `int16` to add the the buffer.\r\n     */\r\n    addInt16(value) {\r\n        this.prep(2, 0);\r\n        this.writeInt16(value);\r\n    }\r\n    /**\r\n     * Add an `int32` to the buffer, properly aligned, and grows the buffer (if necessary).\r\n     * @param value The `int32` to add the the buffer.\r\n     */\r\n    addInt32(value) {\r\n        this.prep(4, 0);\r\n        this.writeInt32(value);\r\n    }\r\n    /**\r\n     * Add an `int64` to the buffer, properly aligned, and grows the buffer (if necessary).\r\n     * @param value The `int64` to add the the buffer.\r\n     */\r\n    addInt64(value) {\r\n        this.prep(8, 0);\r\n        this.writeInt64(value);\r\n    }\r\n    /**\r\n     * Add a `float32` to the buffer, properly aligned, and grows the buffer (if necessary).\r\n     * @param value The `float32` to add the the buffer.\r\n     */\r\n    addFloat32(value) {\r\n        this.prep(4, 0);\r\n        this.writeFloat32(value);\r\n    }\r\n    /**\r\n     * Add a `float64` to the buffer, properly aligned, and grows the buffer (if necessary).\r\n     * @param value The `float64` to add the the buffer.\r\n     */\r\n    addFloat64(value) {\r\n        this.prep(8, 0);\r\n        this.writeFloat64(value);\r\n    }\r\n    addFieldInt8(voffset, value, defaultValue) {\r\n        if (this.force_defaults || value != defaultValue) {\r\n            this.addInt8(value);\r\n            this.slot(voffset);\r\n        }\r\n    }\r\n    addFieldInt16(voffset, value, defaultValue) {\r\n        if (this.force_defaults || value != defaultValue) {\r\n            this.addInt16(value);\r\n            this.slot(voffset);\r\n        }\r\n    }\r\n    addFieldInt32(voffset, value, defaultValue) {\r\n        if (this.force_defaults || value != defaultValue) {\r\n            this.addInt32(value);\r\n            this.slot(voffset);\r\n        }\r\n    }\r\n    addFieldInt64(voffset, value, defaultValue) {\r\n        if (this.force_defaults || !value.equals(defaultValue)) {\r\n            this.addInt64(value);\r\n            this.slot(voffset);\r\n        }\r\n    }\r\n    addFieldFloat32(voffset, value, defaultValue) {\r\n        if (this.force_defaults || value != defaultValue) {\r\n            this.addFloat32(value);\r\n            this.slot(voffset);\r\n        }\r\n    }\r\n    addFieldFloat64(voffset, value, defaultValue) {\r\n        if (this.force_defaults || value != defaultValue) {\r\n            this.addFloat64(value);\r\n            this.slot(voffset);\r\n        }\r\n    }\r\n    addFieldOffset(voffset, value, defaultValue) {\r\n        if (this.force_defaults || value != defaultValue) {\r\n            this.addOffset(value);\r\n            this.slot(voffset);\r\n        }\r\n    }\r\n    /**\r\n     * Structs are stored inline, so nothing additional is being added. `d` is always 0.\r\n     */\r\n    addFieldStruct(voffset, value, defaultValue) {\r\n        if (value != defaultValue) {\r\n            this.nested(value);\r\n            this.slot(voffset);\r\n        }\r\n    }\r\n    /**\r\n     * Structures are always stored inline, they need to be created right\r\n     * where they're used.  You'll get this assertion failure if you\r\n     * created it elsewhere.\r\n     */\r\n    nested(obj) {\r\n        if (obj != this.offset()) {\r\n            throw new Error('FlatBuffers: struct must be serialized inline.');\r\n        }\r\n    }\r\n    /**\r\n     * Should not be creating any other object, string or vector\r\n     * while an object is being constructed\r\n     */\r\n    notNested() {\r\n        if (this.isNested) {\r\n            throw new Error('FlatBuffers: object serialization must not be nested.');\r\n        }\r\n    }\r\n    /**\r\n     * Set the current vtable at `voffset` to the current location in the buffer.\r\n     */\r\n    slot(voffset) {\r\n        if (this.vtable !== null)\r\n            this.vtable[voffset] = this.offset();\r\n    }\r\n    /**\r\n     * @returns Offset relative to the end of the buffer.\r\n     */\r\n    offset() {\r\n        return this.bb.capacity() - this.space;\r\n    }\r\n    /**\r\n     * Doubles the size of the backing ByteBuffer and copies the old data towards\r\n     * the end of the new buffer (since we build the buffer backwards).\r\n     *\r\n     * @param bb The current buffer with the existing data\r\n     * @returns A new byte buffer with the old data copied\r\n     * to it. The data is located at the end of the buffer.\r\n     *\r\n     * uint8Array.set() formally takes {Array<number>|ArrayBufferView}, so to pass\r\n     * it a uint8Array we need to suppress the type check:\r\n     * @suppress {checkTypes}\r\n     */\r\n    static growByteBuffer(bb) {\r\n        const old_buf_size = bb.capacity();\r\n        // Ensure we don't grow beyond what fits in an int.\r\n        if (old_buf_size & 0xC0000000) {\r\n            throw new Error('FlatBuffers: cannot grow buffer beyond 2 gigabytes.');\r\n        }\r\n        const new_buf_size = old_buf_size << 1;\r\n        const nbb = ByteBuffer.allocate(new_buf_size);\r\n        nbb.setPosition(new_buf_size - old_buf_size);\r\n        nbb.bytes().set(bb.bytes(), new_buf_size - old_buf_size);\r\n        return nbb;\r\n    }\r\n    /**\r\n     * Adds on offset, relative to where it will be written.\r\n     *\r\n     * @param offset The offset to add.\r\n     */\r\n    addOffset(offset) {\r\n        this.prep(SIZEOF_INT, 0); // Ensure alignment is already done.\r\n        this.writeInt32(this.offset() - offset + SIZEOF_INT);\r\n    }\r\n    /**\r\n     * Start encoding a new object in the buffer.  Users will not usually need to\r\n     * call this directly. The FlatBuffers compiler will generate helper methods\r\n     * that call this method internally.\r\n     */\r\n    startObject(numfields) {\r\n        this.notNested();\r\n        if (this.vtable == null) {\r\n            this.vtable = [];\r\n        }\r\n        this.vtable_in_use = numfields;\r\n        for (let i = 0; i < numfields; i++) {\r\n            this.vtable[i] = 0; // This will push additional elements as needed\r\n        }\r\n        this.isNested = true;\r\n        this.object_start = this.offset();\r\n    }\r\n    /**\r\n     * Finish off writing the object that is under construction.\r\n     *\r\n     * @returns The offset to the object inside `dataBuffer`\r\n     */\r\n    endObject() {\r\n        if (this.vtable == null || !this.isNested) {\r\n            throw new Error('FlatBuffers: endObject called without startObject');\r\n        }\r\n        this.addInt32(0);\r\n        const vtableloc = this.offset();\r\n        // Trim trailing zeroes.\r\n        let i = this.vtable_in_use - 1;\r\n        // eslint-disable-next-line no-empty\r\n        for (; i >= 0 && this.vtable[i] == 0; i--) { }\r\n        const trimmed_size = i + 1;\r\n        // Write out the current vtable.\r\n        for (; i >= 0; i--) {\r\n            // Offset relative to the start of the table.\r\n            this.addInt16(this.vtable[i] != 0 ? vtableloc - this.vtable[i] : 0);\r\n        }\r\n        const standard_fields = 2; // The fields below:\r\n        this.addInt16(vtableloc - this.object_start);\r\n        const len = (trimmed_size + standard_fields) * SIZEOF_SHORT;\r\n        this.addInt16(len);\r\n        // Search for an existing vtable that matches the current one.\r\n        let existing_vtable = 0;\r\n        const vt1 = this.space;\r\n        outer_loop: for (i = 0; i < this.vtables.length; i++) {\r\n            const vt2 = this.bb.capacity() - this.vtables[i];\r\n            if (len == this.bb.readInt16(vt2)) {\r\n                for (let j = SIZEOF_SHORT; j < len; j += SIZEOF_SHORT) {\r\n                    if (this.bb.readInt16(vt1 + j) != this.bb.readInt16(vt2 + j)) {\r\n                        continue outer_loop;\r\n                    }\r\n                }\r\n                existing_vtable = this.vtables[i];\r\n                break;\r\n            }\r\n        }\r\n        if (existing_vtable) {\r\n            // Found a match:\r\n            // Remove the current vtable.\r\n            this.space = this.bb.capacity() - vtableloc;\r\n            // Point table to existing vtable.\r\n            this.bb.writeInt32(this.space, existing_vtable - vtableloc);\r\n        }\r\n        else {\r\n            // No match:\r\n            // Add the location of the current vtable to the list of vtables.\r\n            this.vtables.push(this.offset());\r\n            // Point table to current vtable.\r\n            this.bb.writeInt32(this.bb.capacity() - vtableloc, this.offset() - vtableloc);\r\n        }\r\n        this.isNested = false;\r\n        return vtableloc;\r\n    }\r\n    /**\r\n     * Finalize a buffer, poiting to the given `root_table`.\r\n     */\r\n    finish(root_table, opt_file_identifier, opt_size_prefix) {\r\n        const size_prefix = opt_size_prefix ? SIZE_PREFIX_LENGTH : 0;\r\n        if (opt_file_identifier) {\r\n            const file_identifier = opt_file_identifier;\r\n            this.prep(this.minalign, SIZEOF_INT +\r\n                FILE_IDENTIFIER_LENGTH + size_prefix);\r\n            if (file_identifier.length != FILE_IDENTIFIER_LENGTH) {\r\n                throw new Error('FlatBuffers: file identifier must be length ' +\r\n                    FILE_IDENTIFIER_LENGTH);\r\n            }\r\n            for (let i = FILE_IDENTIFIER_LENGTH - 1; i >= 0; i--) {\r\n                this.writeInt8(file_identifier.charCodeAt(i));\r\n            }\r\n        }\r\n        this.prep(this.minalign, SIZEOF_INT + size_prefix);\r\n        this.addOffset(root_table);\r\n        if (size_prefix) {\r\n            this.addInt32(this.bb.capacity() - this.space);\r\n        }\r\n        this.bb.setPosition(this.space);\r\n    }\r\n    /**\r\n     * Finalize a size prefixed buffer, pointing to the given `root_table`.\r\n     */\r\n    finishSizePrefixed(root_table, opt_file_identifier) {\r\n        this.finish(root_table, opt_file_identifier, true);\r\n    }\r\n    /**\r\n     * This checks a required field has been set in a given table that has\r\n     * just been constructed.\r\n     */\r\n    requiredField(table, field) {\r\n        const table_start = this.bb.capacity() - table;\r\n        const vtable_start = table_start - this.bb.readInt32(table_start);\r\n        const ok = this.bb.readInt16(vtable_start + field) != 0;\r\n        // If this fails, the caller will show what field needs to be set.\r\n        if (!ok) {\r\n            throw new Error('FlatBuffers: field ' + field + ' must be set');\r\n        }\r\n    }\r\n    /**\r\n     * Start a new array/vector of objects.  Users usually will not call\r\n     * this directly. The FlatBuffers compiler will create a start/end\r\n     * method for vector types in generated code.\r\n     *\r\n     * @param elem_size The size of each element in the array\r\n     * @param num_elems The number of elements in the array\r\n     * @param alignment The alignment of the array\r\n     */\r\n    startVector(elem_size, num_elems, alignment) {\r\n        this.notNested();\r\n        this.vector_num_elems = num_elems;\r\n        this.prep(SIZEOF_INT, elem_size * num_elems);\r\n        this.prep(alignment, elem_size * num_elems); // Just in case alignment > int.\r\n    }\r\n    /**\r\n     * Finish off the creation of an array and all its elements. The array must be\r\n     * created with `startVector`.\r\n     *\r\n     * @returns The offset at which the newly created array\r\n     * starts.\r\n     */\r\n    endVector() {\r\n        this.writeInt32(this.vector_num_elems);\r\n        return this.offset();\r\n    }\r\n    /**\r\n     * Encode the string `s` in the buffer using UTF-8. If the string passed has\r\n     * already been seen, we return the offset of the already written string\r\n     *\r\n     * @param s The string to encode\r\n     * @return The offset in the buffer where the encoded string starts\r\n     */\r\n    createSharedString(s) {\r\n        if (!s) {\r\n            return 0;\r\n        }\r\n        if (!this.string_maps) {\r\n            this.string_maps = new Map();\r\n        }\r\n        if (this.string_maps.has(s)) {\r\n            return this.string_maps.get(s);\r\n        }\r\n        const offset = this.createString(s);\r\n        this.string_maps.set(s, offset);\r\n        return offset;\r\n    }\r\n    /**\r\n     * Encode the string `s` in the buffer using UTF-8. If a Uint8Array is passed\r\n     * instead of a string, it is assumed to contain valid UTF-8 encoded data.\r\n     *\r\n     * @param s The string to encode\r\n     * @return The offset in the buffer where the encoded string starts\r\n     */\r\n    createString(s) {\r\n        if (!s) {\r\n            return 0;\r\n        }\r\n        let utf8;\r\n        if (s instanceof Uint8Array) {\r\n            utf8 = s;\r\n        }\r\n        else {\r\n            utf8 = [];\r\n            let i = 0;\r\n            while (i < s.length) {\r\n                let codePoint;\r\n                // Decode UTF-16\r\n                const a = s.charCodeAt(i++);\r\n                if (a < 0xD800 || a >= 0xDC00) {\r\n                    codePoint = a;\r\n                }\r\n                else {\r\n                    const b = s.charCodeAt(i++);\r\n                    codePoint = (a << 10) + b + (0x10000 - (0xD800 << 10) - 0xDC00);\r\n                }\r\n                // Encode UTF-8\r\n                if (codePoint < 0x80) {\r\n                    utf8.push(codePoint);\r\n                }\r\n                else {\r\n                    if (codePoint < 0x800) {\r\n                        utf8.push(((codePoint >> 6) & 0x1F) | 0xC0);\r\n                    }\r\n                    else {\r\n                        if (codePoint < 0x10000) {\r\n                            utf8.push(((codePoint >> 12) & 0x0F) | 0xE0);\r\n                        }\r\n                        else {\r\n                            utf8.push(((codePoint >> 18) & 0x07) | 0xF0, ((codePoint >> 12) & 0x3F) | 0x80);\r\n                        }\r\n                        utf8.push(((codePoint >> 6) & 0x3F) | 0x80);\r\n                    }\r\n                    utf8.push((codePoint & 0x3F) | 0x80);\r\n                }\r\n            }\r\n        }\r\n        this.addInt8(0);\r\n        this.startVector(1, utf8.length, 1);\r\n        this.bb.setPosition(this.space -= utf8.length);\r\n        for (let i = 0, offset = this.space, bytes = this.bb.bytes(); i < utf8.length; i++) {\r\n            bytes[offset++] = utf8[i];\r\n        }\r\n        return this.endVector();\r\n    }\r\n    /**\r\n     * A helper function to avoid generated code depending on this file directly.\r\n     */\r\n    createLong(low, high) {\r\n        return Long.create(low, high);\r\n    }\r\n    /**\r\n     * A helper function to pack an object\r\n     *\r\n     * @returns offset of obj\r\n     */\r\n    createObjectOffset(obj) {\r\n        if (obj === null) {\r\n            return 0;\r\n        }\r\n        if (typeof obj === 'string') {\r\n            return this.createString(obj);\r\n        }\r\n        else {\r\n            return obj.pack(this);\r\n        }\r\n    }\r\n    /**\r\n     * A helper function to pack a list of object\r\n     *\r\n     * @returns list of offsets of each non null object\r\n     */\r\n    createObjectOffsetList(list) {\r\n        const ret = [];\r\n        for (let i = 0; i < list.length; ++i) {\r\n            const val = list[i];\r\n            if (val !== null) {\r\n                ret.push(this.createObjectOffset(val));\r\n            }\r\n            else {\r\n                throw new Error('FlatBuffers: Argument for createObjectOffsetList cannot contain null.');\r\n            }\r\n        }\r\n        return ret;\r\n    }\r\n    createStructOffsetList(list, startFunc) {\r\n        startFunc(this, list.length);\r\n        this.createObjectOffsetList(list);\r\n        return this.endVector();\r\n    }\r\n}\r\n",null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,null,"import * as exports0 from './Arrow.dom.js';\nimport * as exports1 from './util/int.js';\nObject.assign(arguments[0], exports0);"]}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/Arrow.externs.es2015.min.js b/igv_component/node_modules/apache-arrow/Arrow.externs.es2015.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..0f850949c1c627ab456b42d96c9eb72a5999007f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.externs.es2015.min.js
@@ -0,0 +1,1468 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+// @ts-nocheck
+/* eslint-disable */
+/**
+ * @fileoverview Closure Compiler externs for Arrow
+ * @externs
+ * @suppress {duplicate,checkTypes}
+ */
+/** @type {symbol} */
+Symbol.iterator;
+/** @type {symbol} */
+Symbol.toPrimitive;
+/** @type {symbol} */
+Symbol.asyncIterator;
+
+var Encoding = function() {};
+/** @type {?} */
+Encoding[1] = function() {};
+/** @type {?} */
+Encoding[2] = function() {};
+/** @type {?} */
+Encoding.UTF8_BYTES = function() {};
+/** @type {?} */
+Encoding.UTF16_STRING = function() {};
+
+var DateUnit = function() {};
+/** @type {?} */
+DateUnit[0] = function() {};
+/** @type {?} */
+DateUnit[1] = function() {};
+/** @type {?} */
+DateUnit.DAY = function() {};
+/** @type {?} */
+DateUnit.MILLISECOND = function() {};
+var IntervalUnit = function() {};
+/** @type {?} */
+IntervalUnit[0] = function() {};
+/** @type {?} */
+IntervalUnit[1] = function() {};
+/** @type {?} */
+IntervalUnit[2] = function() {};
+/** @type {?} */
+IntervalUnit.YEAR_MONTH = function() {};
+/** @type {?} */
+IntervalUnit.DAY_TIME = function() {};
+/** @type {?} */
+IntervalUnit.MONTH_DAY_NANO = function() {};
+var MessageHeader = function() {};
+/** @type {?} */
+MessageHeader[0] = function() {};
+/** @type {?} */
+MessageHeader[1] = function() {};
+/** @type {?} */
+MessageHeader[2] = function() {};
+/** @type {?} */
+MessageHeader[3] = function() {};
+/** @type {?} */
+MessageHeader[4] = function() {};
+/** @type {?} */
+MessageHeader[5] = function() {};
+/** @type {?} */
+MessageHeader.NONE = function() {};
+/** @type {?} */
+MessageHeader.Schema = function() {};
+/** @type {?} */
+MessageHeader.DictionaryBatch = function() {};
+/** @type {?} */
+MessageHeader.RecordBatch = function() {};
+/** @type {?} */
+MessageHeader.Tensor = function() {};
+/** @type {?} */
+MessageHeader.SparseTensor = function() {};
+var MetadataVersion = function() {};
+/** @type {?} */
+MetadataVersion[0] = function() {};
+/** @type {?} */
+MetadataVersion[1] = function() {};
+/** @type {?} */
+MetadataVersion[2] = function() {};
+/** @type {?} */
+MetadataVersion[3] = function() {};
+/** @type {?} */
+MetadataVersion[4] = function() {};
+/** @type {?} */
+MetadataVersion.V1 = function() {};
+/** @type {?} */
+MetadataVersion.V2 = function() {};
+/** @type {?} */
+MetadataVersion.V3 = function() {};
+/** @type {?} */
+MetadataVersion.V4 = function() {};
+/** @type {?} */
+MetadataVersion.V5 = function() {};
+var Precision = function() {};
+/** @type {?} */
+Precision[0] = function() {};
+/** @type {?} */
+Precision[1] = function() {};
+/** @type {?} */
+Precision[2] = function() {};
+/** @type {?} */
+Precision.HALF = function() {};
+/** @type {?} */
+Precision.SINGLE = function() {};
+/** @type {?} */
+Precision.DOUBLE = function() {};
+var TimeUnit = function() {};
+/** @type {?} */
+TimeUnit[0] = function() {};
+/** @type {?} */
+TimeUnit[1] = function() {};
+/** @type {?} */
+TimeUnit[2] = function() {};
+/** @type {?} */
+TimeUnit[3] = function() {};
+/** @type {?} */
+TimeUnit.SECOND = function() {};
+/** @type {?} */
+TimeUnit.MILLISECOND = function() {};
+/** @type {?} */
+TimeUnit.MICROSECOND = function() {};
+/** @type {?} */
+TimeUnit.NANOSECOND = function() {};
+var Type = function() {};
+/** @type {?} */
+Type[0] = function() {};
+/** @type {?} */
+Type[1] = function() {};
+/** @type {?} */
+Type[2] = function() {};
+/** @type {?} */
+Type[3] = function() {};
+/** @type {?} */
+Type[4] = function() {};
+/** @type {?} */
+Type[5] = function() {};
+/** @type {?} */
+Type[6] = function() {};
+/** @type {?} */
+Type[7] = function() {};
+/** @type {?} */
+Type[8] = function() {};
+/** @type {?} */
+Type[9] = function() {};
+/** @type {?} */
+Type[10] = function() {};
+/** @type {?} */
+Type[11] = function() {};
+/** @type {?} */
+Type[12] = function() {};
+/** @type {?} */
+Type[13] = function() {};
+/** @type {?} */
+Type[14] = function() {};
+/** @type {?} */
+Type[15] = function() {};
+/** @type {?} */
+Type[16] = function() {};
+/** @type {?} */
+Type[17] = function() {};
+/** @type {?} */
+Type.NONE = function() {};
+/** @type {?} */
+Type.Null = function() {};
+/** @type {?} */
+Type.Int = function() {};
+/** @type {?} */
+Type.Float = function() {};
+/** @type {?} */
+Type.Binary = function() {};
+/** @type {?} */
+Type.Utf8 = function() {};
+/** @type {?} */
+Type.Bool = function() {};
+/** @type {?} */
+Type.Decimal = function() {};
+/** @type {?} */
+Type.Date = function() {};
+/** @type {?} */
+Type.Time = function() {};
+/** @type {?} */
+Type.Timestamp = function() {};
+/** @type {?} */
+Type.Interval = function() {};
+/** @type {?} */
+Type.List = function() {};
+/** @type {?} */
+Type.Struct = function() {};
+/** @type {?} */
+Type.Union = function() {};
+/** @type {?} */
+Type.FixedSizeBinary = function() {};
+/** @type {?} */
+Type.FixedSizeList = function() {};
+/** @type {?} */
+Type.Map = function() {};
+/** @type {?} */
+Type.Dictionary = function() {};
+/** @type {?} */
+Type[-1] = function() {};
+/** @type {?} */
+Type.Int8 = function() {};
+/** @type {?} */
+Type[-2] = function() {};
+/** @type {?} */
+Type.Int16 = function() {};
+/** @type {?} */
+Type[-3] = function() {};
+/** @type {?} */
+Type.Int32 = function() {};
+/** @type {?} */
+Type[-4] = function() {};
+/** @type {?} */
+Type.Int64 = function() {};
+/** @type {?} */
+Type[-5] = function() {};
+/** @type {?} */
+Type.Uint8 = function() {};
+/** @type {?} */
+Type[-6] = function() {};
+/** @type {?} */
+Type.Uint16 = function() {};
+/** @type {?} */
+Type[-7] = function() {};
+/** @type {?} */
+Type.Uint32 = function() {};
+/** @type {?} */
+Type[-8] = function() {};
+/** @type {?} */
+Type.Uint64 = function() {};
+/** @type {?} */
+Type[-9] = function() {};
+/** @type {?} */
+Type.Float16 = function() {};
+/** @type {?} */
+Type[-10] = function() {};
+/** @type {?} */
+Type.Float32 = function() {};
+/** @type {?} */
+Type[-11] = function() {};
+/** @type {?} */
+Type.Float64 = function() {};
+/** @type {?} */
+Type[-12] = function() {};
+/** @type {?} */
+Type.DateDay = function() {};
+/** @type {?} */
+Type[-13] = function() {};
+/** @type {?} */
+Type.DateMillisecond = function() {};
+/** @type {?} */
+Type[-14] = function() {};
+/** @type {?} */
+Type.TimestampSecond = function() {};
+/** @type {?} */
+Type[-15] = function() {};
+/** @type {?} */
+Type.TimestampMillisecond = function() {};
+/** @type {?} */
+Type[-16] = function() {};
+/** @type {?} */
+Type.TimestampMicrosecond = function() {};
+/** @type {?} */
+Type[-17] = function() {};
+/** @type {?} */
+Type.TimestampNanosecond = function() {};
+/** @type {?} */
+Type[-18] = function() {};
+/** @type {?} */
+Type.TimeSecond = function() {};
+/** @type {?} */
+Type[-19] = function() {};
+/** @type {?} */
+Type.TimeMillisecond = function() {};
+/** @type {?} */
+Type[-20] = function() {};
+/** @type {?} */
+Type.TimeMicrosecond = function() {};
+/** @type {?} */
+Type[-21] = function() {};
+/** @type {?} */
+Type.TimeNanosecond = function() {};
+/** @type {?} */
+Type[-22] = function() {};
+/** @type {?} */
+Type.DenseUnion = function() {};
+/** @type {?} */
+Type[-23] = function() {};
+/** @type {?} */
+Type.SparseUnion = function() {};
+/** @type {?} */
+Type[-24] = function() {};
+/** @type {?} */
+Type.IntervalDayTime = function() {};
+/** @type {?} */
+Type[-25] = function() {};
+/** @type {?} */
+Type.IntervalYearMonth = function() {};
+/** @type {?} */
+Type[-26] = function() {};
+var UnionMode = function() {};
+/** @type {?} */
+UnionMode[0] = function() {};
+/** @type {?} */
+UnionMode[1] = function() {};
+/** @type {?} */
+UnionMode.Sparse = function() {};
+/** @type {?} */
+UnionMode.Dense = function() {};
+var BufferType = function() {};
+/** @type {?} */
+BufferType[0] = function() {};
+/** @type {?} */
+BufferType[1] = function() {};
+/** @type {?} */
+BufferType[2] = function() {};
+/** @type {?} */
+BufferType[3] = function() {};
+/** @type {?} */
+BufferType.OFFSET = function() {};
+/** @type {?} */
+BufferType.DATA = function() {};
+/** @type {?} */
+BufferType.VALIDITY = function() {};
+/** @type {?} */
+BufferType.TYPE = function() {};
+var Data = function() {};
+/** @type {?} */
+Data.prototype.typeId;
+/** @type {?} */
+Data.prototype.ArrayType;
+/** @type {?} */
+Data.prototype.buffers;
+/** @type {?} */
+Data.prototype.byteLength;
+/** @type {?} */
+Data.prototype.nullCount;
+/** @type {?} */
+Data.prototype.getValid;
+/** @type {?} */
+Data.prototype.setValid;
+/** @type {?} */
+Data.prototype.clone;
+/** @type {?} */
+Data.prototype.slice;
+/** @type {?} */
+Data.prototype.children;
+var makeData = function() {};
+var DataType = function() {};
+/** @type {?} */
+DataType.isNull = function() {};
+/** @type {?} */
+DataType.isInt = function() {};
+/** @type {?} */
+DataType.isFloat = function() {};
+/** @type {?} */
+DataType.isBinary = function() {};
+/** @type {?} */
+DataType.isUtf8 = function() {};
+/** @type {?} */
+DataType.isBool = function() {};
+/** @type {?} */
+DataType.isDecimal = function() {};
+/** @type {?} */
+DataType.isDate = function() {};
+/** @type {?} */
+DataType.isTime = function() {};
+/** @type {?} */
+DataType.isTimestamp = function() {};
+/** @type {?} */
+DataType.isInterval = function() {};
+/** @type {?} */
+DataType.isList = function() {};
+/** @type {?} */
+DataType.isStruct = function() {};
+/** @type {?} */
+DataType.isUnion = function() {};
+/** @type {?} */
+DataType.isFixedSizeBinary = function() {};
+/** @type {?} */
+DataType.isFixedSizeList = function() {};
+/** @type {?} */
+DataType.isMap = function() {};
+/** @type {?} */
+DataType.isDictionary = function() {};
+/** @type {?} */
+DataType.isDenseUnion = function() {};
+/** @type {?} */
+DataType.isSparseUnion = function() {};
+/** @type {?} */
+DataType.prototype.typeId;
+/** @type {?} */
+DataType.prototype.children;
+/** @type {?} */
+DataType.prototype.ArrayType;
+var Null = function() {};
+/** @type {?} */
+Null.prototype.typeId;
+var Bool = function() {};
+/** @type {?} */
+Bool.prototype.typeId;
+/** @type {?} */
+Bool.prototype.ArrayType;
+var Int = function() {};
+/** @type {?} */
+Int.prototype.typeId;
+/** @type {?} */
+Int.prototype.ArrayType;
+/** @type {?} */
+Int.prototype.isSigned;
+/** @type {?} */
+Int.prototype.bitWidth;
+var Int8 = function() {};
+/** @type {?} */
+Int8.prototype.ArrayType;
+var Int16 = function() {};
+/** @type {?} */
+Int16.prototype.ArrayType;
+var Int32 = function() {};
+/** @type {?} */
+Int32.prototype.ArrayType;
+var Int64 = function() {};
+/** @type {?} */
+Int64.prototype.ArrayType;
+var Uint8 = function() {};
+/** @type {?} */
+Uint8.prototype.ArrayType;
+var Uint16 = function() {};
+/** @type {?} */
+Uint16.prototype.ArrayType;
+var Uint32 = function() {};
+/** @type {?} */
+Uint32.prototype.ArrayType;
+var Uint64 = function() {};
+/** @type {?} */
+Uint64.prototype.ArrayType;
+var Float = function() {};
+/** @type {?} */
+Float.prototype.typeId;
+/** @type {?} */
+Float.prototype.ArrayType;
+/** @type {?} */
+Float.prototype.precision;
+var Float16 = function() {};
+/** @type {?} */
+Float16.prototype.ArrayType;
+var Float32 = function() {};
+/** @type {?} */
+Float32.prototype.ArrayType;
+var Float64 = function() {};
+/** @type {?} */
+Float64.prototype.ArrayType;
+var Utf8 = function() {};
+/** @type {?} */
+Utf8.prototype.typeId;
+/** @type {?} */
+Utf8.prototype.ArrayType;
+var Binary = function() {};
+/** @type {?} */
+Binary.prototype.typeId;
+/** @type {?} */
+Binary.prototype.ArrayType;
+var FixedSizeBinary = function() {};
+/** @type {?} */
+FixedSizeBinary.prototype.typeId;
+/** @type {?} */
+FixedSizeBinary.prototype.byteWidth;
+/** @type {?} */
+FixedSizeBinary.prototype.ArrayType;
+var Date_ = function() {};
+/** @type {?} */
+Date_.prototype.typeId;
+/** @type {?} */
+Date_.prototype.unit;
+/** @type {?} */
+Date_.prototype.ArrayType;
+var DateDay = function() {};
+var DateMillisecond = function() {};
+var Timestamp = function() {};
+/** @type {?} */
+Timestamp.prototype.typeId;
+/** @type {?} */
+Timestamp.prototype.unit;
+/** @type {?} */
+Timestamp.prototype.timezone;
+/** @type {?} */
+Timestamp.prototype.ArrayType;
+var TimestampSecond = function() {};
+var TimestampMillisecond = function() {};
+var TimestampMicrosecond = function() {};
+var TimestampNanosecond = function() {};
+var Time = function() {};
+/** @type {?} */
+Time.prototype.typeId;
+/** @type {?} */
+Time.prototype.ArrayType;
+/** @type {?} */
+Time.prototype.unit;
+/** @type {?} */
+Time.prototype.bitWidth;
+var TimeSecond = function() {};
+var TimeMillisecond = function() {};
+var TimeMicrosecond = function() {};
+var TimeNanosecond = function() {};
+var Decimal = function() {};
+/** @type {?} */
+Decimal.prototype.typeId;
+/** @type {?} */
+Decimal.prototype.scale;
+/** @type {?} */
+Decimal.prototype.precision;
+/** @type {?} */
+Decimal.prototype.ArrayType;
+var List = function() {};
+/** @type {?} */
+List.prototype.typeId;
+/** @type {?} */
+List.prototype.valueType;
+/** @type {?} */
+List.prototype.valueField;
+/** @type {?} */
+List.prototype.ArrayType;
+/** @type {?} */
+List.prototype.children;
+var Struct = function() {};
+/** @type {?} */
+Struct.prototype.typeId;
+/** @type {?} */
+Struct.prototype.children;
+var StructRow = function() {};
+/** @type {?} */
+StructRow.prototype.toArray;
+/** @type {?} */
+StructRow.prototype.toJSON;
+var Union = function() {};
+/** @type {?} */
+Union.prototype.typeId;
+/** @type {?} */
+Union.prototype.mode;
+/** @type {?} */
+Union.prototype.typeIds;
+/** @type {?} */
+Union.prototype.children;
+/** @type {?} */
+Union.prototype.typeIdToChildIndex;
+/** @type {?} */
+Union.prototype.ArrayType;
+var DenseUnion = function() {};
+var SparseUnion = function() {};
+var Dictionary = function() {};
+/** @type {?} */
+Dictionary.prototype.typeId;
+/** @type {?} */
+Dictionary.prototype.children;
+/** @type {?} */
+Dictionary.prototype.valueType;
+/** @type {?} */
+Dictionary.prototype.ArrayType;
+/** @type {?} */
+Dictionary.prototype.id;
+/** @type {?} */
+Dictionary.prototype.indices;
+/** @type {?} */
+Dictionary.prototype.isOrdered;
+/** @type {?} */
+Dictionary.prototype.dictionary;
+var Interval = function() {};
+/** @type {?} */
+Interval.prototype.typeId;
+/** @type {?} */
+Interval.prototype.unit;
+/** @type {?} */
+Interval.prototype.ArrayType;
+var IntervalDayTime = function() {};
+var IntervalYearMonth = function() {};
+var FixedSizeList = function() {};
+/** @type {?} */
+FixedSizeList.prototype.typeId;
+/** @type {?} */
+FixedSizeList.prototype.valueType;
+/** @type {?} */
+FixedSizeList.prototype.valueField;
+/** @type {?} */
+FixedSizeList.prototype.ArrayType;
+/** @type {?} */
+FixedSizeList.prototype.children;
+/** @type {?} */
+FixedSizeList.prototype.listSize;
+var Map_ = function() {};
+/** @type {?} */
+Map_.prototype.typeId;
+/** @type {?} */
+Map_.prototype.keyType;
+/** @type {?} */
+Map_.prototype.valueType;
+/** @type {?} */
+Map_.prototype.childType;
+/** @type {?} */
+Map_.prototype.children;
+/** @type {?} */
+Map_.prototype.keysSorted;
+var MapRow = function() {};
+/** @type {?} */
+MapRow.prototype.size;
+/** @type {?} */
+MapRow.prototype.toArray;
+/** @type {?} */
+MapRow.prototype.toJSON;
+var Table = function() {};
+/** @type {?} */
+Table.prototype.data;
+/** @type {?} */
+Table.prototype.numCols;
+/** @type {?} */
+Table.prototype.numRows;
+/** @type {?} */
+Table.prototype.nullCount;
+/** @type {?} */
+Table.prototype.isValid;
+/** @type {?} */
+Table.prototype.get;
+/** @type {?} */
+Table.prototype.set;
+/** @type {?} */
+Table.prototype.indexOf;
+/** @type {?} */
+Table.prototype.getByteLength;
+/** @type {?} */
+Table.prototype.toArray;
+/** @type {?} */
+Table.prototype.concat;
+/** @type {?} */
+Table.prototype.slice;
+/** @type {?} */
+Table.prototype.getChild;
+/** @type {?} */
+Table.prototype.getChildAt;
+/** @type {?} */
+Table.prototype.setChild;
+/** @type {?} */
+Table.prototype.setChildAt;
+/** @type {?} */
+Table.prototype.select;
+/** @type {?} */
+Table.prototype.selectAt;
+/** @type {?} */
+Table.prototype.assign;
+/** @type {?} */
+Table.prototype.schema;
+/** @type {?} */
+Table.prototype.batches;
+var makeTable = function() {};
+var tableFromArrays = function() {};
+var Schema = function() {};
+/** @type {?} */
+Schema.encode = function() {};
+/** @type {?} */
+Schema.decode = function() {};
+/** @type {?} */
+Schema.fromJSON = function() {};
+/** @type {?} */
+Schema.prototype.names;
+/** @type {?} */
+Schema.prototype.select;
+/** @type {?} */
+Schema.prototype.selectAt;
+/** @type {?} */
+Schema.prototype.assign;
+/** @type {?} */
+Schema.prototype.fields;
+/** @type {?} */
+Schema.prototype.metadata;
+/** @type {?} */
+Schema.prototype.dictionaries;
+var Field = function() {};
+/** @type {?} */
+Field.new = function() {};
+/** @type {?} */
+Field.encode = function() {};
+/** @type {?} */
+Field.decode = function() {};
+/** @type {?} */
+Field.fromJSON = function() {};
+/** @type {?} */
+Field.prototype.typeId;
+/** @type {?} */
+Field.prototype.clone;
+/** @type {?} */
+Field.prototype.type;
+/** @type {?} */
+Field.prototype.nullable;
+/** @type {?} */
+Field.prototype.metadata;
+var Visitor = function() {};
+/** @type {?} */
+Visitor.prototype.visitMany;
+/** @type {?} */
+Visitor.prototype.visit;
+/** @type {?} */
+Visitor.prototype.getVisitFn;
+/** @type {?} */
+Visitor.prototype.getVisitFnByTypeId;
+/** @type {?} */
+Visitor.prototype.visitNull;
+/** @type {?} */
+Visitor.prototype.visitBool;
+/** @type {?} */
+Visitor.prototype.visitInt;
+/** @type {?} */
+Visitor.prototype.visitFloat;
+/** @type {?} */
+Visitor.prototype.visitUtf8;
+/** @type {?} */
+Visitor.prototype.visitBinary;
+/** @type {?} */
+Visitor.prototype.visitFixedSizeBinary;
+/** @type {?} */
+Visitor.prototype.visitDate;
+/** @type {?} */
+Visitor.prototype.visitTimestamp;
+/** @type {?} */
+Visitor.prototype.visitTime;
+/** @type {?} */
+Visitor.prototype.visitDecimal;
+/** @type {?} */
+Visitor.prototype.visitList;
+/** @type {?} */
+Visitor.prototype.visitStruct;
+/** @type {?} */
+Visitor.prototype.visitUnion;
+/** @type {?} */
+Visitor.prototype.visitDictionary;
+/** @type {?} */
+Visitor.prototype.visitInterval;
+/** @type {?} */
+Visitor.prototype.visitFixedSizeList;
+/** @type {?} */
+Visitor.prototype.visitMap;
+/** @type {?} */
+Visitor.prototype.visitInt8;
+/** @type {?} */
+Visitor.prototype.visitInt16;
+/** @type {?} */
+Visitor.prototype.visitInt32;
+/** @type {?} */
+Visitor.prototype.visitInt64;
+/** @type {?} */
+Visitor.prototype.visitUint8;
+/** @type {?} */
+Visitor.prototype.visitUint16;
+/** @type {?} */
+Visitor.prototype.visitUint32;
+/** @type {?} */
+Visitor.prototype.visitUint64;
+/** @type {?} */
+Visitor.prototype.visitFloat16;
+/** @type {?} */
+Visitor.prototype.visitFloat32;
+/** @type {?} */
+Visitor.prototype.visitFloat64;
+/** @type {?} */
+Visitor.prototype.visitDateDay;
+/** @type {?} */
+Visitor.prototype.visitDateMillisecond;
+/** @type {?} */
+Visitor.prototype.visitTimestampSecond;
+/** @type {?} */
+Visitor.prototype.visitTimestampMillisecond;
+/** @type {?} */
+Visitor.prototype.visitTimestampMicrosecond;
+/** @type {?} */
+Visitor.prototype.visitTimestampNanosecond;
+/** @type {?} */
+Visitor.prototype.visitTimeSecond;
+/** @type {?} */
+Visitor.prototype.visitTimeMillisecond;
+/** @type {?} */
+Visitor.prototype.visitTimeMicrosecond;
+/** @type {?} */
+Visitor.prototype.visitTimeNanosecond;
+/** @type {?} */
+Visitor.prototype.visitDenseUnion;
+/** @type {?} */
+Visitor.prototype.visitSparseUnion;
+/** @type {?} */
+Visitor.prototype.visitIntervalDayTime;
+/** @type {?} */
+Visitor.prototype.visitIntervalYearMonth;
+var Vector = function() {};
+/** @type {?} */
+Vector.prototype.byteLength;
+/** @type {?} */
+Vector.prototype.nullCount;
+/** @type {?} */
+Vector.prototype.ArrayType;
+/** @type {?} */
+Vector.prototype.VectorName;
+/** @type {?} */
+Vector.prototype.isValid;
+/** @type {?} */
+Vector.prototype.get;
+/** @type {?} */
+Vector.prototype.set;
+/** @type {?} */
+Vector.prototype.indexOf;
+/** @type {?} */
+Vector.prototype.includes;
+/** @type {?} */
+Vector.prototype.getByteLength;
+/** @type {?} */
+Vector.prototype.concat;
+/** @type {?} */
+Vector.prototype.slice;
+/** @type {?} */
+Vector.prototype.toJSON;
+/** @type {?} */
+Vector.prototype.toArray;
+/** @type {?} */
+Vector.prototype.getChild;
+/** @type {?} */
+Vector.prototype.getChildAt;
+/** @type {?} */
+Vector.prototype.isMemoized;
+/** @type {?} */
+Vector.prototype.memoize;
+/** @type {?} */
+Vector.prototype.unmemoize;
+/** @type {?} */
+Vector.prototype.type;
+/** @type {?} */
+Vector.prototype.data;
+/** @type {?} */
+Vector.prototype.stride;
+/** @type {?} */
+Vector.prototype.numChildren;
+var makeVector = function() {};
+var vectorFromArray = function() {};
+var tableFromJSON = function() {};
+var ByteStream = function() {};
+/** @type {?} */
+ByteStream.prototype.next;
+/** @type {?} */
+ByteStream.prototype.throw;
+/** @type {?} */
+ByteStream.prototype.return;
+/** @type {?} */
+ByteStream.prototype.peek;
+/** @type {?} */
+ByteStream.prototype.read;
+var AsyncByteStream = function() {};
+/** @type {?} */
+AsyncByteStream.prototype.next;
+/** @type {?} */
+AsyncByteStream.prototype.throw;
+/** @type {?} */
+AsyncByteStream.prototype.return;
+/** @type {?} */
+AsyncByteStream.prototype.closed;
+/** @type {?} */
+AsyncByteStream.prototype.cancel;
+/** @type {?} */
+AsyncByteStream.prototype.peek;
+/** @type {?} */
+AsyncByteStream.prototype.read;
+var AsyncByteQueue = function() {};
+/** @type {?} */
+AsyncByteQueue.prototype.write;
+/** @type {?} */
+AsyncByteQueue.prototype.toUint8Array;
+var RecordBatchReader = function() {};
+/** @type {?} */
+RecordBatchReader.throughNode = function() {};
+/** @type {?} */
+RecordBatchReader.throughDOM = function() {};
+/** @type {?} */
+RecordBatchReader.from = function() {};
+/** @type {?} */
+RecordBatchReader.readAll = function() {};
+/** @type {?} */
+RecordBatchReader.prototype.closed;
+/** @type {?} */
+RecordBatchReader.prototype.schema;
+/** @type {?} */
+RecordBatchReader.prototype.autoDestroy;
+/** @type {?} */
+RecordBatchReader.prototype.dictionaries;
+/** @type {?} */
+RecordBatchReader.prototype.numDictionaries;
+/** @type {?} */
+RecordBatchReader.prototype.numRecordBatches;
+/** @type {?} */
+RecordBatchReader.prototype.footer;
+/** @type {?} */
+RecordBatchReader.prototype.isSync;
+/** @type {?} */
+RecordBatchReader.prototype.isAsync;
+/** @type {?} */
+RecordBatchReader.prototype.isFile;
+/** @type {?} */
+RecordBatchReader.prototype.isStream;
+/** @type {?} */
+RecordBatchReader.prototype.next;
+/** @type {?} */
+RecordBatchReader.prototype.throw;
+/** @type {?} */
+RecordBatchReader.prototype.return;
+/** @type {?} */
+RecordBatchReader.prototype.cancel;
+/** @type {?} */
+RecordBatchReader.prototype.reset;
+/** @type {?} */
+RecordBatchReader.prototype.open;
+/** @type {?} */
+RecordBatchReader.prototype.readRecordBatch;
+/** @type {?} */
+RecordBatchReader.prototype.toDOMStream;
+/** @type {?} */
+RecordBatchReader.prototype.toNodeStream;
+var RecordBatchFileReader = function() {};
+/** @type {?} */
+RecordBatchFileReader.throughDOM = function() {};
+var RecordBatchStreamReader = function() {};
+/** @type {?} */
+RecordBatchStreamReader.throughDOM = function() {};
+/** @type {?} */
+RecordBatchStreamReader.prototype.readAll;
+var AsyncRecordBatchFileReader = function() {};
+var AsyncRecordBatchStreamReader = function() {};
+/** @type {?} */
+AsyncRecordBatchStreamReader.prototype.readAll;
+var RecordBatchWriter = function() {};
+/** @type {?} */
+RecordBatchWriter.throughNode = function() {};
+/** @type {?} */
+RecordBatchWriter.throughDOM = function() {};
+/** @type {?} */
+RecordBatchWriter.prototype.toUint8Array;
+/** @type {?} */
+RecordBatchWriter.prototype.writeAll;
+/** @type {?} */
+RecordBatchWriter.prototype.closed;
+/** @type {?} */
+RecordBatchWriter.prototype.toDOMStream;
+/** @type {?} */
+RecordBatchWriter.prototype.toNodeStream;
+/** @type {?} */
+RecordBatchWriter.prototype.close;
+/** @type {?} */
+RecordBatchWriter.prototype.abort;
+/** @type {?} */
+RecordBatchWriter.prototype.finish;
+/** @type {?} */
+RecordBatchWriter.prototype.reset;
+/** @type {?} */
+RecordBatchWriter.prototype.write;
+var RecordBatchFileWriter = function() {};
+/** @type {?} */
+RecordBatchFileWriter.writeAll = function() {};
+/** @type {?} */
+RecordBatchFileWriter.throughDOM = function() {};
+var RecordBatchStreamWriter = function() {};
+/** @type {?} */
+RecordBatchStreamWriter.writeAll = function() {};
+/** @type {?} */
+RecordBatchStreamWriter.throughDOM = function() {};
+var RecordBatchJSONWriter = function() {};
+/** @type {?} */
+RecordBatchJSONWriter.writeAll = function() {};
+/** @type {?} */
+RecordBatchJSONWriter.prototype.close;
+var tableFromIPC = function() {};
+var tableToIPC = function() {};
+var MessageReader = function() {};
+/** @type {?} */
+MessageReader.prototype.next;
+/** @type {?} */
+MessageReader.prototype.throw;
+/** @type {?} */
+MessageReader.prototype.return;
+/** @type {?} */
+MessageReader.prototype.readMessage;
+/** @type {?} */
+MessageReader.prototype.readMessageBody;
+/** @type {?} */
+MessageReader.prototype.readSchema;
+/** @type {?} */
+MessageReader.prototype.readMetadataLength;
+/** @type {?} */
+MessageReader.prototype.readMetadata;
+var AsyncMessageReader = function() {};
+/** @type {?} */
+AsyncMessageReader.prototype.next;
+/** @type {?} */
+AsyncMessageReader.prototype.throw;
+/** @type {?} */
+AsyncMessageReader.prototype.return;
+/** @type {?} */
+AsyncMessageReader.prototype.readMessage;
+/** @type {?} */
+AsyncMessageReader.prototype.readMessageBody;
+/** @type {?} */
+AsyncMessageReader.prototype.readSchema;
+/** @type {?} */
+AsyncMessageReader.prototype.readMetadataLength;
+/** @type {?} */
+AsyncMessageReader.prototype.readMetadata;
+var JSONMessageReader = function() {};
+/** @type {?} */
+JSONMessageReader.prototype.next;
+/** @type {?} */
+JSONMessageReader.prototype.readMessageBody;
+/** @type {?} */
+JSONMessageReader.prototype.readMessage;
+/** @type {?} */
+JSONMessageReader.prototype.readSchema;
+var Message = function() {};
+/** @type {?} */
+Message.fromJSON = function() {};
+/** @type {?} */
+Message.decode = function() {};
+/** @type {?} */
+Message.encode = function() {};
+/** @type {?} */
+Message.from = function() {};
+/** @type {?} */
+Message.prototype.type;
+/** @type {?} */
+Message.prototype.version;
+/** @type {?} */
+Message.prototype.headerType;
+/** @type {?} */
+Message.prototype.bodyLength;
+/** @type {?} */
+Message.prototype.header;
+/** @type {?} */
+Message.prototype.isSchema;
+/** @type {?} */
+Message.prototype.isRecordBatch;
+/** @type {?} */
+Message.prototype.isDictionaryBatch;
+var RecordBatch = function() {};
+/** @type {?} */
+RecordBatch.prototype.dictionaries;
+/** @type {?} */
+RecordBatch.prototype.numCols;
+/** @type {?} */
+RecordBatch.prototype.numRows;
+/** @type {?} */
+RecordBatch.prototype.nullCount;
+/** @type {?} */
+RecordBatch.prototype.isValid;
+/** @type {?} */
+RecordBatch.prototype.get;
+/** @type {?} */
+RecordBatch.prototype.set;
+/** @type {?} */
+RecordBatch.prototype.indexOf;
+/** @type {?} */
+RecordBatch.prototype.getByteLength;
+/** @type {?} */
+RecordBatch.prototype.toArray;
+/** @type {?} */
+RecordBatch.prototype.concat;
+/** @type {?} */
+RecordBatch.prototype.slice;
+/** @type {?} */
+RecordBatch.prototype.getChild;
+/** @type {?} */
+RecordBatch.prototype.getChildAt;
+/** @type {?} */
+RecordBatch.prototype.setChild;
+/** @type {?} */
+RecordBatch.prototype.setChildAt;
+/** @type {?} */
+RecordBatch.prototype.select;
+/** @type {?} */
+RecordBatch.prototype.selectAt;
+var util = function() {};
+/** @type {?} */
+util.BN = function() {};
+/** @type {?} */
+util.bignumToBigInt = function() {};
+/** @type {?} */
+util.bignumToString = function() {};
+/** @type {?} */
+util.isArrowBigNumSymbol = function() {};
+/** @type {?} */
+util.BaseInt64 = function() {};
+/** @type {?} */
+util.Int128 = function() {};
+/** @type {?} */
+util.Int64 = function() {};
+/** @type {?} */
+util.Uint64 = function() {};
+/** @type {?} */
+util.BitIterator = function() {};
+/** @type {?} */
+util.getBit = function() {};
+/** @type {?} */
+util.getBool = function() {};
+/** @type {?} */
+util.packBools = function() {};
+/** @type {?} */
+util.popcnt_array = function() {};
+/** @type {?} */
+util.popcnt_bit_range = function() {};
+/** @type {?} */
+util.popcnt_uint32 = function() {};
+/** @type {?} */
+util.setBool = function() {};
+/** @type {?} */
+util.truncateBitmap = function() {};
+/** @type {?} */
+util.float64ToUint16 = function() {};
+/** @type {?} */
+util.uint16ToFloat64 = function() {};
+/** @type {?} */
+util.compareArrayLike = function() {};
+/** @type {?} */
+util.joinUint8Arrays = function() {};
+/** @type {?} */
+util.memcpy = function() {};
+/** @type {?} */
+util.rebaseValueOffsets = function() {};
+/** @type {?} */
+util.toArrayBufferView = function() {};
+/** @type {?} */
+util.toArrayBufferViewAsyncIterator = function() {};
+/** @type {?} */
+util.toArrayBufferViewIterator = function() {};
+/** @type {?} */
+util.toBigInt64Array = function() {};
+/** @type {?} */
+util.toBigUint64Array = function() {};
+/** @type {?} */
+util.toFloat32Array = function() {};
+/** @type {?} */
+util.toFloat32ArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toFloat32ArrayIterator = function() {};
+/** @type {?} */
+util.toFloat64Array = function() {};
+/** @type {?} */
+util.toFloat64ArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toFloat64ArrayIterator = function() {};
+/** @type {?} */
+util.toInt16Array = function() {};
+/** @type {?} */
+util.toInt16ArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toInt16ArrayIterator = function() {};
+/** @type {?} */
+util.toInt32Array = function() {};
+/** @type {?} */
+util.toInt32ArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toInt32ArrayIterator = function() {};
+/** @type {?} */
+util.toInt8Array = function() {};
+/** @type {?} */
+util.toInt8ArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toInt8ArrayIterator = function() {};
+/** @type {?} */
+util.toUint16Array = function() {};
+/** @type {?} */
+util.toUint16ArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toUint16ArrayIterator = function() {};
+/** @type {?} */
+util.toUint32Array = function() {};
+/** @type {?} */
+util.toUint32ArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toUint32ArrayIterator = function() {};
+/** @type {?} */
+util.toUint8Array = function() {};
+/** @type {?} */
+util.toUint8ArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toUint8ArrayIterator = function() {};
+/** @type {?} */
+util.toUint8ClampedArray = function() {};
+/** @type {?} */
+util.toUint8ClampedArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toUint8ClampedArrayIterator = function() {};
+/** @type {?} */
+util.clampIndex = function() {};
+/** @type {?} */
+util.clampRange = function() {};
+/** @type {?} */
+util.createElementComparator = function() {};
+/** @type {?} */
+util.compareSchemas = function() {};
+/** @type {?} */
+util.compareFields = function() {};
+/** @type {?} */
+util.compareTypes = function() {};
+var Builder = function() {};
+/** @type {?} */
+Builder.throughNode = function() {};
+/** @type {?} */
+Builder.throughDOM = function() {};
+/** @type {?} */
+Builder.prototype.toVector;
+/** @type {?} */
+Builder.prototype.ArrayType;
+/** @type {?} */
+Builder.prototype.nullCount;
+/** @type {?} */
+Builder.prototype.numChildren;
+/** @type {?} */
+Builder.prototype.byteLength;
+/** @type {?} */
+Builder.prototype.reservedLength;
+/** @type {?} */
+Builder.prototype.reservedByteLength;
+/** @type {?} */
+Builder.prototype.valueOffsets;
+/** @type {?} */
+Builder.prototype.values;
+/** @type {?} */
+Builder.prototype.nullBitmap;
+/** @type {?} */
+Builder.prototype.typeIds;
+/** @type {?} */
+Builder.prototype.append;
+/** @type {?} */
+Builder.prototype.isValid;
+/** @type {?} */
+Builder.prototype.set;
+/** @type {?} */
+Builder.prototype.setValue;
+/** @type {?} */
+Builder.prototype.setValid;
+/** @type {?} */
+Builder.prototype.addChild;
+/** @type {?} */
+Builder.prototype.getChildAt;
+/** @type {?} */
+Builder.prototype.flush;
+/** @type {?} */
+Builder.prototype.finish;
+/** @type {?} */
+Builder.prototype.clear;
+/** @type {?} */
+Builder.prototype.stride;
+/** @type {?} */
+Builder.prototype.children;
+/** @type {?} */
+Builder.prototype.finished;
+/** @type {?} */
+Builder.prototype.nullValues;
+var makeBuilder = function() {};
+var builderThroughIterable = function() {};
+var builderThroughAsyncIterable = function() {};
+var BinaryBuilder = function() {};
+/** @type {?} */
+BinaryBuilder.prototype.byteLength;
+/** @type {?} */
+BinaryBuilder.prototype.setValue;
+var BoolBuilder = function() {};
+/** @type {?} */
+BoolBuilder.prototype.setValue;
+var DateBuilder = function() {};
+var DateDayBuilder = function() {};
+var DateMillisecondBuilder = function() {};
+var DecimalBuilder = function() {};
+var DictionaryBuilder = function() {};
+/** @type {?} */
+DictionaryBuilder.prototype.values;
+/** @type {?} */
+DictionaryBuilder.prototype.nullCount;
+/** @type {?} */
+DictionaryBuilder.prototype.nullBitmap;
+/** @type {?} */
+DictionaryBuilder.prototype.byteLength;
+/** @type {?} */
+DictionaryBuilder.prototype.reservedLength;
+/** @type {?} */
+DictionaryBuilder.prototype.reservedByteLength;
+/** @type {?} */
+DictionaryBuilder.prototype.isValid;
+/** @type {?} */
+DictionaryBuilder.prototype.setValid;
+/** @type {?} */
+DictionaryBuilder.prototype.setValue;
+/** @type {?} */
+DictionaryBuilder.prototype.flush;
+/** @type {?} */
+DictionaryBuilder.prototype.finish;
+/** @type {?} */
+DictionaryBuilder.prototype.clear;
+/** @type {?} */
+DictionaryBuilder.prototype.valueToKey;
+var FixedSizeBinaryBuilder = function() {};
+var FixedSizeListBuilder = function() {};
+/** @type {?} */
+FixedSizeListBuilder.prototype.setValue;
+/** @type {?} */
+FixedSizeListBuilder.prototype.addChild;
+var FloatBuilder = function() {};
+/** @type {?} */
+FloatBuilder.prototype.setValue;
+var Float16Builder = function() {};
+/** @type {?} */
+Float16Builder.prototype.setValue;
+var Float32Builder = function() {};
+var Float64Builder = function() {};
+var IntervalBuilder = function() {};
+var IntervalDayTimeBuilder = function() {};
+var IntervalYearMonthBuilder = function() {};
+var IntBuilder = function() {};
+/** @type {?} */
+IntBuilder.prototype.setValue;
+var Int8Builder = function() {};
+var Int16Builder = function() {};
+var Int32Builder = function() {};
+var Int64Builder = function() {};
+var Uint8Builder = function() {};
+var Uint16Builder = function() {};
+var Uint32Builder = function() {};
+var Uint64Builder = function() {};
+var ListBuilder = function() {};
+/** @type {?} */
+ListBuilder.prototype.addChild;
+var MapBuilder = function() {};
+/** @type {?} */
+MapBuilder.prototype.set;
+/** @type {?} */
+MapBuilder.prototype.setValue;
+/** @type {?} */
+MapBuilder.prototype.addChild;
+var NullBuilder = function() {};
+/** @type {?} */
+NullBuilder.prototype.setValue;
+/** @type {?} */
+NullBuilder.prototype.setValid;
+var StructBuilder = function() {};
+/** @type {?} */
+StructBuilder.prototype.setValue;
+/** @type {?} */
+StructBuilder.prototype.setValid;
+/** @type {?} */
+StructBuilder.prototype.addChild;
+var TimestampBuilder = function() {};
+var TimestampSecondBuilder = function() {};
+var TimestampMillisecondBuilder = function() {};
+var TimestampMicrosecondBuilder = function() {};
+var TimestampNanosecondBuilder = function() {};
+var TimeBuilder = function() {};
+var TimeSecondBuilder = function() {};
+var TimeMillisecondBuilder = function() {};
+var TimeMicrosecondBuilder = function() {};
+var TimeNanosecondBuilder = function() {};
+var UnionBuilder = function() {};
+/** @type {?} */
+UnionBuilder.prototype.typeIdToChildIndex;
+/** @type {?} */
+UnionBuilder.prototype.append;
+/** @type {?} */
+UnionBuilder.prototype.set;
+/** @type {?} */
+UnionBuilder.prototype.setValue;
+/** @type {?} */
+UnionBuilder.prototype.addChild;
+var DenseUnionBuilder = function() {};
+/** @type {?} */
+DenseUnionBuilder.prototype.setValue;
+var SparseUnionBuilder = function() {};
+var Utf8Builder = function() {};
+/** @type {?} */
+Utf8Builder.prototype.byteLength;
+/** @type {?} */
+Utf8Builder.prototype.setValue;
+var BaseInt64 = function() {};
+/** @type {?} */
+BaseInt64.prototype.high;
+/** @type {?} */
+BaseInt64.prototype.low;
+/** @type {?} */
+BaseInt64.prototype.lessThan;
+/** @type {?} */
+BaseInt64.prototype.equals;
+/** @type {?} */
+BaseInt64.prototype.greaterThan;
+/** @type {?} */
+BaseInt64.prototype.hex;
+var Uint64 = function() {};
+/** @type {?} */
+Uint64.from = function() {};
+/** @type {?} */
+Uint64.fromNumber = function() {};
+/** @type {?} */
+Uint64.fromString = function() {};
+/** @type {?} */
+Uint64.convertArray = function() {};
+/** @type {?} */
+Uint64.multiply = function() {};
+/** @type {?} */
+Uint64.add = function() {};
+/** @type {?} */
+Uint64.prototype.times;
+/** @type {?} */
+Uint64.prototype.plus;
+var Int64 = function() {};
+/** @type {?} */
+Int64.from = function() {};
+/** @type {?} */
+Int64.fromNumber = function() {};
+/** @type {?} */
+Int64.fromString = function() {};
+/** @type {?} */
+Int64.convertArray = function() {};
+/** @type {?} */
+Int64.multiply = function() {};
+/** @type {?} */
+Int64.add = function() {};
+/** @type {?} */
+Int64.prototype.negate;
+/** @type {?} */
+Int64.prototype.times;
+/** @type {?} */
+Int64.prototype.plus;
+/** @type {?} */
+Int64.prototype.lessThan;
+var Int128 = function() {};
+/** @type {?} */
+Int128.multiply = function() {};
+/** @type {?} */
+Int128.add = function() {};
+/** @type {?} */
+Int128.from = function() {};
+/** @type {?} */
+Int128.fromNumber = function() {};
+/** @type {?} */
+Int128.fromString = function() {};
+/** @type {?} */
+Int128.convertArray = function() {};
+/** @type {?} */
+Int128.prototype.high;
+/** @type {?} */
+Int128.prototype.low;
+/** @type {?} */
+Int128.prototype.negate;
+/** @type {?} */
+Int128.prototype.times;
+/** @type {?} */
+Int128.prototype.plus;
+/** @type {?} */
+Int128.prototype.hex;
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/Arrow.externs.esnext.min.js b/igv_component/node_modules/apache-arrow/Arrow.externs.esnext.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..0f850949c1c627ab456b42d96c9eb72a5999007f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.externs.esnext.min.js
@@ -0,0 +1,1468 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+// @ts-nocheck
+/* eslint-disable */
+/**
+ * @fileoverview Closure Compiler externs for Arrow
+ * @externs
+ * @suppress {duplicate,checkTypes}
+ */
+/** @type {symbol} */
+Symbol.iterator;
+/** @type {symbol} */
+Symbol.toPrimitive;
+/** @type {symbol} */
+Symbol.asyncIterator;
+
+var Encoding = function() {};
+/** @type {?} */
+Encoding[1] = function() {};
+/** @type {?} */
+Encoding[2] = function() {};
+/** @type {?} */
+Encoding.UTF8_BYTES = function() {};
+/** @type {?} */
+Encoding.UTF16_STRING = function() {};
+
+var DateUnit = function() {};
+/** @type {?} */
+DateUnit[0] = function() {};
+/** @type {?} */
+DateUnit[1] = function() {};
+/** @type {?} */
+DateUnit.DAY = function() {};
+/** @type {?} */
+DateUnit.MILLISECOND = function() {};
+var IntervalUnit = function() {};
+/** @type {?} */
+IntervalUnit[0] = function() {};
+/** @type {?} */
+IntervalUnit[1] = function() {};
+/** @type {?} */
+IntervalUnit[2] = function() {};
+/** @type {?} */
+IntervalUnit.YEAR_MONTH = function() {};
+/** @type {?} */
+IntervalUnit.DAY_TIME = function() {};
+/** @type {?} */
+IntervalUnit.MONTH_DAY_NANO = function() {};
+var MessageHeader = function() {};
+/** @type {?} */
+MessageHeader[0] = function() {};
+/** @type {?} */
+MessageHeader[1] = function() {};
+/** @type {?} */
+MessageHeader[2] = function() {};
+/** @type {?} */
+MessageHeader[3] = function() {};
+/** @type {?} */
+MessageHeader[4] = function() {};
+/** @type {?} */
+MessageHeader[5] = function() {};
+/** @type {?} */
+MessageHeader.NONE = function() {};
+/** @type {?} */
+MessageHeader.Schema = function() {};
+/** @type {?} */
+MessageHeader.DictionaryBatch = function() {};
+/** @type {?} */
+MessageHeader.RecordBatch = function() {};
+/** @type {?} */
+MessageHeader.Tensor = function() {};
+/** @type {?} */
+MessageHeader.SparseTensor = function() {};
+var MetadataVersion = function() {};
+/** @type {?} */
+MetadataVersion[0] = function() {};
+/** @type {?} */
+MetadataVersion[1] = function() {};
+/** @type {?} */
+MetadataVersion[2] = function() {};
+/** @type {?} */
+MetadataVersion[3] = function() {};
+/** @type {?} */
+MetadataVersion[4] = function() {};
+/** @type {?} */
+MetadataVersion.V1 = function() {};
+/** @type {?} */
+MetadataVersion.V2 = function() {};
+/** @type {?} */
+MetadataVersion.V3 = function() {};
+/** @type {?} */
+MetadataVersion.V4 = function() {};
+/** @type {?} */
+MetadataVersion.V5 = function() {};
+var Precision = function() {};
+/** @type {?} */
+Precision[0] = function() {};
+/** @type {?} */
+Precision[1] = function() {};
+/** @type {?} */
+Precision[2] = function() {};
+/** @type {?} */
+Precision.HALF = function() {};
+/** @type {?} */
+Precision.SINGLE = function() {};
+/** @type {?} */
+Precision.DOUBLE = function() {};
+var TimeUnit = function() {};
+/** @type {?} */
+TimeUnit[0] = function() {};
+/** @type {?} */
+TimeUnit[1] = function() {};
+/** @type {?} */
+TimeUnit[2] = function() {};
+/** @type {?} */
+TimeUnit[3] = function() {};
+/** @type {?} */
+TimeUnit.SECOND = function() {};
+/** @type {?} */
+TimeUnit.MILLISECOND = function() {};
+/** @type {?} */
+TimeUnit.MICROSECOND = function() {};
+/** @type {?} */
+TimeUnit.NANOSECOND = function() {};
+var Type = function() {};
+/** @type {?} */
+Type[0] = function() {};
+/** @type {?} */
+Type[1] = function() {};
+/** @type {?} */
+Type[2] = function() {};
+/** @type {?} */
+Type[3] = function() {};
+/** @type {?} */
+Type[4] = function() {};
+/** @type {?} */
+Type[5] = function() {};
+/** @type {?} */
+Type[6] = function() {};
+/** @type {?} */
+Type[7] = function() {};
+/** @type {?} */
+Type[8] = function() {};
+/** @type {?} */
+Type[9] = function() {};
+/** @type {?} */
+Type[10] = function() {};
+/** @type {?} */
+Type[11] = function() {};
+/** @type {?} */
+Type[12] = function() {};
+/** @type {?} */
+Type[13] = function() {};
+/** @type {?} */
+Type[14] = function() {};
+/** @type {?} */
+Type[15] = function() {};
+/** @type {?} */
+Type[16] = function() {};
+/** @type {?} */
+Type[17] = function() {};
+/** @type {?} */
+Type.NONE = function() {};
+/** @type {?} */
+Type.Null = function() {};
+/** @type {?} */
+Type.Int = function() {};
+/** @type {?} */
+Type.Float = function() {};
+/** @type {?} */
+Type.Binary = function() {};
+/** @type {?} */
+Type.Utf8 = function() {};
+/** @type {?} */
+Type.Bool = function() {};
+/** @type {?} */
+Type.Decimal = function() {};
+/** @type {?} */
+Type.Date = function() {};
+/** @type {?} */
+Type.Time = function() {};
+/** @type {?} */
+Type.Timestamp = function() {};
+/** @type {?} */
+Type.Interval = function() {};
+/** @type {?} */
+Type.List = function() {};
+/** @type {?} */
+Type.Struct = function() {};
+/** @type {?} */
+Type.Union = function() {};
+/** @type {?} */
+Type.FixedSizeBinary = function() {};
+/** @type {?} */
+Type.FixedSizeList = function() {};
+/** @type {?} */
+Type.Map = function() {};
+/** @type {?} */
+Type.Dictionary = function() {};
+/** @type {?} */
+Type[-1] = function() {};
+/** @type {?} */
+Type.Int8 = function() {};
+/** @type {?} */
+Type[-2] = function() {};
+/** @type {?} */
+Type.Int16 = function() {};
+/** @type {?} */
+Type[-3] = function() {};
+/** @type {?} */
+Type.Int32 = function() {};
+/** @type {?} */
+Type[-4] = function() {};
+/** @type {?} */
+Type.Int64 = function() {};
+/** @type {?} */
+Type[-5] = function() {};
+/** @type {?} */
+Type.Uint8 = function() {};
+/** @type {?} */
+Type[-6] = function() {};
+/** @type {?} */
+Type.Uint16 = function() {};
+/** @type {?} */
+Type[-7] = function() {};
+/** @type {?} */
+Type.Uint32 = function() {};
+/** @type {?} */
+Type[-8] = function() {};
+/** @type {?} */
+Type.Uint64 = function() {};
+/** @type {?} */
+Type[-9] = function() {};
+/** @type {?} */
+Type.Float16 = function() {};
+/** @type {?} */
+Type[-10] = function() {};
+/** @type {?} */
+Type.Float32 = function() {};
+/** @type {?} */
+Type[-11] = function() {};
+/** @type {?} */
+Type.Float64 = function() {};
+/** @type {?} */
+Type[-12] = function() {};
+/** @type {?} */
+Type.DateDay = function() {};
+/** @type {?} */
+Type[-13] = function() {};
+/** @type {?} */
+Type.DateMillisecond = function() {};
+/** @type {?} */
+Type[-14] = function() {};
+/** @type {?} */
+Type.TimestampSecond = function() {};
+/** @type {?} */
+Type[-15] = function() {};
+/** @type {?} */
+Type.TimestampMillisecond = function() {};
+/** @type {?} */
+Type[-16] = function() {};
+/** @type {?} */
+Type.TimestampMicrosecond = function() {};
+/** @type {?} */
+Type[-17] = function() {};
+/** @type {?} */
+Type.TimestampNanosecond = function() {};
+/** @type {?} */
+Type[-18] = function() {};
+/** @type {?} */
+Type.TimeSecond = function() {};
+/** @type {?} */
+Type[-19] = function() {};
+/** @type {?} */
+Type.TimeMillisecond = function() {};
+/** @type {?} */
+Type[-20] = function() {};
+/** @type {?} */
+Type.TimeMicrosecond = function() {};
+/** @type {?} */
+Type[-21] = function() {};
+/** @type {?} */
+Type.TimeNanosecond = function() {};
+/** @type {?} */
+Type[-22] = function() {};
+/** @type {?} */
+Type.DenseUnion = function() {};
+/** @type {?} */
+Type[-23] = function() {};
+/** @type {?} */
+Type.SparseUnion = function() {};
+/** @type {?} */
+Type[-24] = function() {};
+/** @type {?} */
+Type.IntervalDayTime = function() {};
+/** @type {?} */
+Type[-25] = function() {};
+/** @type {?} */
+Type.IntervalYearMonth = function() {};
+/** @type {?} */
+Type[-26] = function() {};
+var UnionMode = function() {};
+/** @type {?} */
+UnionMode[0] = function() {};
+/** @type {?} */
+UnionMode[1] = function() {};
+/** @type {?} */
+UnionMode.Sparse = function() {};
+/** @type {?} */
+UnionMode.Dense = function() {};
+var BufferType = function() {};
+/** @type {?} */
+BufferType[0] = function() {};
+/** @type {?} */
+BufferType[1] = function() {};
+/** @type {?} */
+BufferType[2] = function() {};
+/** @type {?} */
+BufferType[3] = function() {};
+/** @type {?} */
+BufferType.OFFSET = function() {};
+/** @type {?} */
+BufferType.DATA = function() {};
+/** @type {?} */
+BufferType.VALIDITY = function() {};
+/** @type {?} */
+BufferType.TYPE = function() {};
+var Data = function() {};
+/** @type {?} */
+Data.prototype.typeId;
+/** @type {?} */
+Data.prototype.ArrayType;
+/** @type {?} */
+Data.prototype.buffers;
+/** @type {?} */
+Data.prototype.byteLength;
+/** @type {?} */
+Data.prototype.nullCount;
+/** @type {?} */
+Data.prototype.getValid;
+/** @type {?} */
+Data.prototype.setValid;
+/** @type {?} */
+Data.prototype.clone;
+/** @type {?} */
+Data.prototype.slice;
+/** @type {?} */
+Data.prototype.children;
+var makeData = function() {};
+var DataType = function() {};
+/** @type {?} */
+DataType.isNull = function() {};
+/** @type {?} */
+DataType.isInt = function() {};
+/** @type {?} */
+DataType.isFloat = function() {};
+/** @type {?} */
+DataType.isBinary = function() {};
+/** @type {?} */
+DataType.isUtf8 = function() {};
+/** @type {?} */
+DataType.isBool = function() {};
+/** @type {?} */
+DataType.isDecimal = function() {};
+/** @type {?} */
+DataType.isDate = function() {};
+/** @type {?} */
+DataType.isTime = function() {};
+/** @type {?} */
+DataType.isTimestamp = function() {};
+/** @type {?} */
+DataType.isInterval = function() {};
+/** @type {?} */
+DataType.isList = function() {};
+/** @type {?} */
+DataType.isStruct = function() {};
+/** @type {?} */
+DataType.isUnion = function() {};
+/** @type {?} */
+DataType.isFixedSizeBinary = function() {};
+/** @type {?} */
+DataType.isFixedSizeList = function() {};
+/** @type {?} */
+DataType.isMap = function() {};
+/** @type {?} */
+DataType.isDictionary = function() {};
+/** @type {?} */
+DataType.isDenseUnion = function() {};
+/** @type {?} */
+DataType.isSparseUnion = function() {};
+/** @type {?} */
+DataType.prototype.typeId;
+/** @type {?} */
+DataType.prototype.children;
+/** @type {?} */
+DataType.prototype.ArrayType;
+var Null = function() {};
+/** @type {?} */
+Null.prototype.typeId;
+var Bool = function() {};
+/** @type {?} */
+Bool.prototype.typeId;
+/** @type {?} */
+Bool.prototype.ArrayType;
+var Int = function() {};
+/** @type {?} */
+Int.prototype.typeId;
+/** @type {?} */
+Int.prototype.ArrayType;
+/** @type {?} */
+Int.prototype.isSigned;
+/** @type {?} */
+Int.prototype.bitWidth;
+var Int8 = function() {};
+/** @type {?} */
+Int8.prototype.ArrayType;
+var Int16 = function() {};
+/** @type {?} */
+Int16.prototype.ArrayType;
+var Int32 = function() {};
+/** @type {?} */
+Int32.prototype.ArrayType;
+var Int64 = function() {};
+/** @type {?} */
+Int64.prototype.ArrayType;
+var Uint8 = function() {};
+/** @type {?} */
+Uint8.prototype.ArrayType;
+var Uint16 = function() {};
+/** @type {?} */
+Uint16.prototype.ArrayType;
+var Uint32 = function() {};
+/** @type {?} */
+Uint32.prototype.ArrayType;
+var Uint64 = function() {};
+/** @type {?} */
+Uint64.prototype.ArrayType;
+var Float = function() {};
+/** @type {?} */
+Float.prototype.typeId;
+/** @type {?} */
+Float.prototype.ArrayType;
+/** @type {?} */
+Float.prototype.precision;
+var Float16 = function() {};
+/** @type {?} */
+Float16.prototype.ArrayType;
+var Float32 = function() {};
+/** @type {?} */
+Float32.prototype.ArrayType;
+var Float64 = function() {};
+/** @type {?} */
+Float64.prototype.ArrayType;
+var Utf8 = function() {};
+/** @type {?} */
+Utf8.prototype.typeId;
+/** @type {?} */
+Utf8.prototype.ArrayType;
+var Binary = function() {};
+/** @type {?} */
+Binary.prototype.typeId;
+/** @type {?} */
+Binary.prototype.ArrayType;
+var FixedSizeBinary = function() {};
+/** @type {?} */
+FixedSizeBinary.prototype.typeId;
+/** @type {?} */
+FixedSizeBinary.prototype.byteWidth;
+/** @type {?} */
+FixedSizeBinary.prototype.ArrayType;
+var Date_ = function() {};
+/** @type {?} */
+Date_.prototype.typeId;
+/** @type {?} */
+Date_.prototype.unit;
+/** @type {?} */
+Date_.prototype.ArrayType;
+var DateDay = function() {};
+var DateMillisecond = function() {};
+var Timestamp = function() {};
+/** @type {?} */
+Timestamp.prototype.typeId;
+/** @type {?} */
+Timestamp.prototype.unit;
+/** @type {?} */
+Timestamp.prototype.timezone;
+/** @type {?} */
+Timestamp.prototype.ArrayType;
+var TimestampSecond = function() {};
+var TimestampMillisecond = function() {};
+var TimestampMicrosecond = function() {};
+var TimestampNanosecond = function() {};
+var Time = function() {};
+/** @type {?} */
+Time.prototype.typeId;
+/** @type {?} */
+Time.prototype.ArrayType;
+/** @type {?} */
+Time.prototype.unit;
+/** @type {?} */
+Time.prototype.bitWidth;
+var TimeSecond = function() {};
+var TimeMillisecond = function() {};
+var TimeMicrosecond = function() {};
+var TimeNanosecond = function() {};
+var Decimal = function() {};
+/** @type {?} */
+Decimal.prototype.typeId;
+/** @type {?} */
+Decimal.prototype.scale;
+/** @type {?} */
+Decimal.prototype.precision;
+/** @type {?} */
+Decimal.prototype.ArrayType;
+var List = function() {};
+/** @type {?} */
+List.prototype.typeId;
+/** @type {?} */
+List.prototype.valueType;
+/** @type {?} */
+List.prototype.valueField;
+/** @type {?} */
+List.prototype.ArrayType;
+/** @type {?} */
+List.prototype.children;
+var Struct = function() {};
+/** @type {?} */
+Struct.prototype.typeId;
+/** @type {?} */
+Struct.prototype.children;
+var StructRow = function() {};
+/** @type {?} */
+StructRow.prototype.toArray;
+/** @type {?} */
+StructRow.prototype.toJSON;
+var Union = function() {};
+/** @type {?} */
+Union.prototype.typeId;
+/** @type {?} */
+Union.prototype.mode;
+/** @type {?} */
+Union.prototype.typeIds;
+/** @type {?} */
+Union.prototype.children;
+/** @type {?} */
+Union.prototype.typeIdToChildIndex;
+/** @type {?} */
+Union.prototype.ArrayType;
+var DenseUnion = function() {};
+var SparseUnion = function() {};
+var Dictionary = function() {};
+/** @type {?} */
+Dictionary.prototype.typeId;
+/** @type {?} */
+Dictionary.prototype.children;
+/** @type {?} */
+Dictionary.prototype.valueType;
+/** @type {?} */
+Dictionary.prototype.ArrayType;
+/** @type {?} */
+Dictionary.prototype.id;
+/** @type {?} */
+Dictionary.prototype.indices;
+/** @type {?} */
+Dictionary.prototype.isOrdered;
+/** @type {?} */
+Dictionary.prototype.dictionary;
+var Interval = function() {};
+/** @type {?} */
+Interval.prototype.typeId;
+/** @type {?} */
+Interval.prototype.unit;
+/** @type {?} */
+Interval.prototype.ArrayType;
+var IntervalDayTime = function() {};
+var IntervalYearMonth = function() {};
+var FixedSizeList = function() {};
+/** @type {?} */
+FixedSizeList.prototype.typeId;
+/** @type {?} */
+FixedSizeList.prototype.valueType;
+/** @type {?} */
+FixedSizeList.prototype.valueField;
+/** @type {?} */
+FixedSizeList.prototype.ArrayType;
+/** @type {?} */
+FixedSizeList.prototype.children;
+/** @type {?} */
+FixedSizeList.prototype.listSize;
+var Map_ = function() {};
+/** @type {?} */
+Map_.prototype.typeId;
+/** @type {?} */
+Map_.prototype.keyType;
+/** @type {?} */
+Map_.prototype.valueType;
+/** @type {?} */
+Map_.prototype.childType;
+/** @type {?} */
+Map_.prototype.children;
+/** @type {?} */
+Map_.prototype.keysSorted;
+var MapRow = function() {};
+/** @type {?} */
+MapRow.prototype.size;
+/** @type {?} */
+MapRow.prototype.toArray;
+/** @type {?} */
+MapRow.prototype.toJSON;
+var Table = function() {};
+/** @type {?} */
+Table.prototype.data;
+/** @type {?} */
+Table.prototype.numCols;
+/** @type {?} */
+Table.prototype.numRows;
+/** @type {?} */
+Table.prototype.nullCount;
+/** @type {?} */
+Table.prototype.isValid;
+/** @type {?} */
+Table.prototype.get;
+/** @type {?} */
+Table.prototype.set;
+/** @type {?} */
+Table.prototype.indexOf;
+/** @type {?} */
+Table.prototype.getByteLength;
+/** @type {?} */
+Table.prototype.toArray;
+/** @type {?} */
+Table.prototype.concat;
+/** @type {?} */
+Table.prototype.slice;
+/** @type {?} */
+Table.prototype.getChild;
+/** @type {?} */
+Table.prototype.getChildAt;
+/** @type {?} */
+Table.prototype.setChild;
+/** @type {?} */
+Table.prototype.setChildAt;
+/** @type {?} */
+Table.prototype.select;
+/** @type {?} */
+Table.prototype.selectAt;
+/** @type {?} */
+Table.prototype.assign;
+/** @type {?} */
+Table.prototype.schema;
+/** @type {?} */
+Table.prototype.batches;
+var makeTable = function() {};
+var tableFromArrays = function() {};
+var Schema = function() {};
+/** @type {?} */
+Schema.encode = function() {};
+/** @type {?} */
+Schema.decode = function() {};
+/** @type {?} */
+Schema.fromJSON = function() {};
+/** @type {?} */
+Schema.prototype.names;
+/** @type {?} */
+Schema.prototype.select;
+/** @type {?} */
+Schema.prototype.selectAt;
+/** @type {?} */
+Schema.prototype.assign;
+/** @type {?} */
+Schema.prototype.fields;
+/** @type {?} */
+Schema.prototype.metadata;
+/** @type {?} */
+Schema.prototype.dictionaries;
+var Field = function() {};
+/** @type {?} */
+Field.new = function() {};
+/** @type {?} */
+Field.encode = function() {};
+/** @type {?} */
+Field.decode = function() {};
+/** @type {?} */
+Field.fromJSON = function() {};
+/** @type {?} */
+Field.prototype.typeId;
+/** @type {?} */
+Field.prototype.clone;
+/** @type {?} */
+Field.prototype.type;
+/** @type {?} */
+Field.prototype.nullable;
+/** @type {?} */
+Field.prototype.metadata;
+var Visitor = function() {};
+/** @type {?} */
+Visitor.prototype.visitMany;
+/** @type {?} */
+Visitor.prototype.visit;
+/** @type {?} */
+Visitor.prototype.getVisitFn;
+/** @type {?} */
+Visitor.prototype.getVisitFnByTypeId;
+/** @type {?} */
+Visitor.prototype.visitNull;
+/** @type {?} */
+Visitor.prototype.visitBool;
+/** @type {?} */
+Visitor.prototype.visitInt;
+/** @type {?} */
+Visitor.prototype.visitFloat;
+/** @type {?} */
+Visitor.prototype.visitUtf8;
+/** @type {?} */
+Visitor.prototype.visitBinary;
+/** @type {?} */
+Visitor.prototype.visitFixedSizeBinary;
+/** @type {?} */
+Visitor.prototype.visitDate;
+/** @type {?} */
+Visitor.prototype.visitTimestamp;
+/** @type {?} */
+Visitor.prototype.visitTime;
+/** @type {?} */
+Visitor.prototype.visitDecimal;
+/** @type {?} */
+Visitor.prototype.visitList;
+/** @type {?} */
+Visitor.prototype.visitStruct;
+/** @type {?} */
+Visitor.prototype.visitUnion;
+/** @type {?} */
+Visitor.prototype.visitDictionary;
+/** @type {?} */
+Visitor.prototype.visitInterval;
+/** @type {?} */
+Visitor.prototype.visitFixedSizeList;
+/** @type {?} */
+Visitor.prototype.visitMap;
+/** @type {?} */
+Visitor.prototype.visitInt8;
+/** @type {?} */
+Visitor.prototype.visitInt16;
+/** @type {?} */
+Visitor.prototype.visitInt32;
+/** @type {?} */
+Visitor.prototype.visitInt64;
+/** @type {?} */
+Visitor.prototype.visitUint8;
+/** @type {?} */
+Visitor.prototype.visitUint16;
+/** @type {?} */
+Visitor.prototype.visitUint32;
+/** @type {?} */
+Visitor.prototype.visitUint64;
+/** @type {?} */
+Visitor.prototype.visitFloat16;
+/** @type {?} */
+Visitor.prototype.visitFloat32;
+/** @type {?} */
+Visitor.prototype.visitFloat64;
+/** @type {?} */
+Visitor.prototype.visitDateDay;
+/** @type {?} */
+Visitor.prototype.visitDateMillisecond;
+/** @type {?} */
+Visitor.prototype.visitTimestampSecond;
+/** @type {?} */
+Visitor.prototype.visitTimestampMillisecond;
+/** @type {?} */
+Visitor.prototype.visitTimestampMicrosecond;
+/** @type {?} */
+Visitor.prototype.visitTimestampNanosecond;
+/** @type {?} */
+Visitor.prototype.visitTimeSecond;
+/** @type {?} */
+Visitor.prototype.visitTimeMillisecond;
+/** @type {?} */
+Visitor.prototype.visitTimeMicrosecond;
+/** @type {?} */
+Visitor.prototype.visitTimeNanosecond;
+/** @type {?} */
+Visitor.prototype.visitDenseUnion;
+/** @type {?} */
+Visitor.prototype.visitSparseUnion;
+/** @type {?} */
+Visitor.prototype.visitIntervalDayTime;
+/** @type {?} */
+Visitor.prototype.visitIntervalYearMonth;
+var Vector = function() {};
+/** @type {?} */
+Vector.prototype.byteLength;
+/** @type {?} */
+Vector.prototype.nullCount;
+/** @type {?} */
+Vector.prototype.ArrayType;
+/** @type {?} */
+Vector.prototype.VectorName;
+/** @type {?} */
+Vector.prototype.isValid;
+/** @type {?} */
+Vector.prototype.get;
+/** @type {?} */
+Vector.prototype.set;
+/** @type {?} */
+Vector.prototype.indexOf;
+/** @type {?} */
+Vector.prototype.includes;
+/** @type {?} */
+Vector.prototype.getByteLength;
+/** @type {?} */
+Vector.prototype.concat;
+/** @type {?} */
+Vector.prototype.slice;
+/** @type {?} */
+Vector.prototype.toJSON;
+/** @type {?} */
+Vector.prototype.toArray;
+/** @type {?} */
+Vector.prototype.getChild;
+/** @type {?} */
+Vector.prototype.getChildAt;
+/** @type {?} */
+Vector.prototype.isMemoized;
+/** @type {?} */
+Vector.prototype.memoize;
+/** @type {?} */
+Vector.prototype.unmemoize;
+/** @type {?} */
+Vector.prototype.type;
+/** @type {?} */
+Vector.prototype.data;
+/** @type {?} */
+Vector.prototype.stride;
+/** @type {?} */
+Vector.prototype.numChildren;
+var makeVector = function() {};
+var vectorFromArray = function() {};
+var tableFromJSON = function() {};
+var ByteStream = function() {};
+/** @type {?} */
+ByteStream.prototype.next;
+/** @type {?} */
+ByteStream.prototype.throw;
+/** @type {?} */
+ByteStream.prototype.return;
+/** @type {?} */
+ByteStream.prototype.peek;
+/** @type {?} */
+ByteStream.prototype.read;
+var AsyncByteStream = function() {};
+/** @type {?} */
+AsyncByteStream.prototype.next;
+/** @type {?} */
+AsyncByteStream.prototype.throw;
+/** @type {?} */
+AsyncByteStream.prototype.return;
+/** @type {?} */
+AsyncByteStream.prototype.closed;
+/** @type {?} */
+AsyncByteStream.prototype.cancel;
+/** @type {?} */
+AsyncByteStream.prototype.peek;
+/** @type {?} */
+AsyncByteStream.prototype.read;
+var AsyncByteQueue = function() {};
+/** @type {?} */
+AsyncByteQueue.prototype.write;
+/** @type {?} */
+AsyncByteQueue.prototype.toUint8Array;
+var RecordBatchReader = function() {};
+/** @type {?} */
+RecordBatchReader.throughNode = function() {};
+/** @type {?} */
+RecordBatchReader.throughDOM = function() {};
+/** @type {?} */
+RecordBatchReader.from = function() {};
+/** @type {?} */
+RecordBatchReader.readAll = function() {};
+/** @type {?} */
+RecordBatchReader.prototype.closed;
+/** @type {?} */
+RecordBatchReader.prototype.schema;
+/** @type {?} */
+RecordBatchReader.prototype.autoDestroy;
+/** @type {?} */
+RecordBatchReader.prototype.dictionaries;
+/** @type {?} */
+RecordBatchReader.prototype.numDictionaries;
+/** @type {?} */
+RecordBatchReader.prototype.numRecordBatches;
+/** @type {?} */
+RecordBatchReader.prototype.footer;
+/** @type {?} */
+RecordBatchReader.prototype.isSync;
+/** @type {?} */
+RecordBatchReader.prototype.isAsync;
+/** @type {?} */
+RecordBatchReader.prototype.isFile;
+/** @type {?} */
+RecordBatchReader.prototype.isStream;
+/** @type {?} */
+RecordBatchReader.prototype.next;
+/** @type {?} */
+RecordBatchReader.prototype.throw;
+/** @type {?} */
+RecordBatchReader.prototype.return;
+/** @type {?} */
+RecordBatchReader.prototype.cancel;
+/** @type {?} */
+RecordBatchReader.prototype.reset;
+/** @type {?} */
+RecordBatchReader.prototype.open;
+/** @type {?} */
+RecordBatchReader.prototype.readRecordBatch;
+/** @type {?} */
+RecordBatchReader.prototype.toDOMStream;
+/** @type {?} */
+RecordBatchReader.prototype.toNodeStream;
+var RecordBatchFileReader = function() {};
+/** @type {?} */
+RecordBatchFileReader.throughDOM = function() {};
+var RecordBatchStreamReader = function() {};
+/** @type {?} */
+RecordBatchStreamReader.throughDOM = function() {};
+/** @type {?} */
+RecordBatchStreamReader.prototype.readAll;
+var AsyncRecordBatchFileReader = function() {};
+var AsyncRecordBatchStreamReader = function() {};
+/** @type {?} */
+AsyncRecordBatchStreamReader.prototype.readAll;
+var RecordBatchWriter = function() {};
+/** @type {?} */
+RecordBatchWriter.throughNode = function() {};
+/** @type {?} */
+RecordBatchWriter.throughDOM = function() {};
+/** @type {?} */
+RecordBatchWriter.prototype.toUint8Array;
+/** @type {?} */
+RecordBatchWriter.prototype.writeAll;
+/** @type {?} */
+RecordBatchWriter.prototype.closed;
+/** @type {?} */
+RecordBatchWriter.prototype.toDOMStream;
+/** @type {?} */
+RecordBatchWriter.prototype.toNodeStream;
+/** @type {?} */
+RecordBatchWriter.prototype.close;
+/** @type {?} */
+RecordBatchWriter.prototype.abort;
+/** @type {?} */
+RecordBatchWriter.prototype.finish;
+/** @type {?} */
+RecordBatchWriter.prototype.reset;
+/** @type {?} */
+RecordBatchWriter.prototype.write;
+var RecordBatchFileWriter = function() {};
+/** @type {?} */
+RecordBatchFileWriter.writeAll = function() {};
+/** @type {?} */
+RecordBatchFileWriter.throughDOM = function() {};
+var RecordBatchStreamWriter = function() {};
+/** @type {?} */
+RecordBatchStreamWriter.writeAll = function() {};
+/** @type {?} */
+RecordBatchStreamWriter.throughDOM = function() {};
+var RecordBatchJSONWriter = function() {};
+/** @type {?} */
+RecordBatchJSONWriter.writeAll = function() {};
+/** @type {?} */
+RecordBatchJSONWriter.prototype.close;
+var tableFromIPC = function() {};
+var tableToIPC = function() {};
+var MessageReader = function() {};
+/** @type {?} */
+MessageReader.prototype.next;
+/** @type {?} */
+MessageReader.prototype.throw;
+/** @type {?} */
+MessageReader.prototype.return;
+/** @type {?} */
+MessageReader.prototype.readMessage;
+/** @type {?} */
+MessageReader.prototype.readMessageBody;
+/** @type {?} */
+MessageReader.prototype.readSchema;
+/** @type {?} */
+MessageReader.prototype.readMetadataLength;
+/** @type {?} */
+MessageReader.prototype.readMetadata;
+var AsyncMessageReader = function() {};
+/** @type {?} */
+AsyncMessageReader.prototype.next;
+/** @type {?} */
+AsyncMessageReader.prototype.throw;
+/** @type {?} */
+AsyncMessageReader.prototype.return;
+/** @type {?} */
+AsyncMessageReader.prototype.readMessage;
+/** @type {?} */
+AsyncMessageReader.prototype.readMessageBody;
+/** @type {?} */
+AsyncMessageReader.prototype.readSchema;
+/** @type {?} */
+AsyncMessageReader.prototype.readMetadataLength;
+/** @type {?} */
+AsyncMessageReader.prototype.readMetadata;
+var JSONMessageReader = function() {};
+/** @type {?} */
+JSONMessageReader.prototype.next;
+/** @type {?} */
+JSONMessageReader.prototype.readMessageBody;
+/** @type {?} */
+JSONMessageReader.prototype.readMessage;
+/** @type {?} */
+JSONMessageReader.prototype.readSchema;
+var Message = function() {};
+/** @type {?} */
+Message.fromJSON = function() {};
+/** @type {?} */
+Message.decode = function() {};
+/** @type {?} */
+Message.encode = function() {};
+/** @type {?} */
+Message.from = function() {};
+/** @type {?} */
+Message.prototype.type;
+/** @type {?} */
+Message.prototype.version;
+/** @type {?} */
+Message.prototype.headerType;
+/** @type {?} */
+Message.prototype.bodyLength;
+/** @type {?} */
+Message.prototype.header;
+/** @type {?} */
+Message.prototype.isSchema;
+/** @type {?} */
+Message.prototype.isRecordBatch;
+/** @type {?} */
+Message.prototype.isDictionaryBatch;
+var RecordBatch = function() {};
+/** @type {?} */
+RecordBatch.prototype.dictionaries;
+/** @type {?} */
+RecordBatch.prototype.numCols;
+/** @type {?} */
+RecordBatch.prototype.numRows;
+/** @type {?} */
+RecordBatch.prototype.nullCount;
+/** @type {?} */
+RecordBatch.prototype.isValid;
+/** @type {?} */
+RecordBatch.prototype.get;
+/** @type {?} */
+RecordBatch.prototype.set;
+/** @type {?} */
+RecordBatch.prototype.indexOf;
+/** @type {?} */
+RecordBatch.prototype.getByteLength;
+/** @type {?} */
+RecordBatch.prototype.toArray;
+/** @type {?} */
+RecordBatch.prototype.concat;
+/** @type {?} */
+RecordBatch.prototype.slice;
+/** @type {?} */
+RecordBatch.prototype.getChild;
+/** @type {?} */
+RecordBatch.prototype.getChildAt;
+/** @type {?} */
+RecordBatch.prototype.setChild;
+/** @type {?} */
+RecordBatch.prototype.setChildAt;
+/** @type {?} */
+RecordBatch.prototype.select;
+/** @type {?} */
+RecordBatch.prototype.selectAt;
+var util = function() {};
+/** @type {?} */
+util.BN = function() {};
+/** @type {?} */
+util.bignumToBigInt = function() {};
+/** @type {?} */
+util.bignumToString = function() {};
+/** @type {?} */
+util.isArrowBigNumSymbol = function() {};
+/** @type {?} */
+util.BaseInt64 = function() {};
+/** @type {?} */
+util.Int128 = function() {};
+/** @type {?} */
+util.Int64 = function() {};
+/** @type {?} */
+util.Uint64 = function() {};
+/** @type {?} */
+util.BitIterator = function() {};
+/** @type {?} */
+util.getBit = function() {};
+/** @type {?} */
+util.getBool = function() {};
+/** @type {?} */
+util.packBools = function() {};
+/** @type {?} */
+util.popcnt_array = function() {};
+/** @type {?} */
+util.popcnt_bit_range = function() {};
+/** @type {?} */
+util.popcnt_uint32 = function() {};
+/** @type {?} */
+util.setBool = function() {};
+/** @type {?} */
+util.truncateBitmap = function() {};
+/** @type {?} */
+util.float64ToUint16 = function() {};
+/** @type {?} */
+util.uint16ToFloat64 = function() {};
+/** @type {?} */
+util.compareArrayLike = function() {};
+/** @type {?} */
+util.joinUint8Arrays = function() {};
+/** @type {?} */
+util.memcpy = function() {};
+/** @type {?} */
+util.rebaseValueOffsets = function() {};
+/** @type {?} */
+util.toArrayBufferView = function() {};
+/** @type {?} */
+util.toArrayBufferViewAsyncIterator = function() {};
+/** @type {?} */
+util.toArrayBufferViewIterator = function() {};
+/** @type {?} */
+util.toBigInt64Array = function() {};
+/** @type {?} */
+util.toBigUint64Array = function() {};
+/** @type {?} */
+util.toFloat32Array = function() {};
+/** @type {?} */
+util.toFloat32ArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toFloat32ArrayIterator = function() {};
+/** @type {?} */
+util.toFloat64Array = function() {};
+/** @type {?} */
+util.toFloat64ArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toFloat64ArrayIterator = function() {};
+/** @type {?} */
+util.toInt16Array = function() {};
+/** @type {?} */
+util.toInt16ArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toInt16ArrayIterator = function() {};
+/** @type {?} */
+util.toInt32Array = function() {};
+/** @type {?} */
+util.toInt32ArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toInt32ArrayIterator = function() {};
+/** @type {?} */
+util.toInt8Array = function() {};
+/** @type {?} */
+util.toInt8ArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toInt8ArrayIterator = function() {};
+/** @type {?} */
+util.toUint16Array = function() {};
+/** @type {?} */
+util.toUint16ArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toUint16ArrayIterator = function() {};
+/** @type {?} */
+util.toUint32Array = function() {};
+/** @type {?} */
+util.toUint32ArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toUint32ArrayIterator = function() {};
+/** @type {?} */
+util.toUint8Array = function() {};
+/** @type {?} */
+util.toUint8ArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toUint8ArrayIterator = function() {};
+/** @type {?} */
+util.toUint8ClampedArray = function() {};
+/** @type {?} */
+util.toUint8ClampedArrayAsyncIterator = function() {};
+/** @type {?} */
+util.toUint8ClampedArrayIterator = function() {};
+/** @type {?} */
+util.clampIndex = function() {};
+/** @type {?} */
+util.clampRange = function() {};
+/** @type {?} */
+util.createElementComparator = function() {};
+/** @type {?} */
+util.compareSchemas = function() {};
+/** @type {?} */
+util.compareFields = function() {};
+/** @type {?} */
+util.compareTypes = function() {};
+var Builder = function() {};
+/** @type {?} */
+Builder.throughNode = function() {};
+/** @type {?} */
+Builder.throughDOM = function() {};
+/** @type {?} */
+Builder.prototype.toVector;
+/** @type {?} */
+Builder.prototype.ArrayType;
+/** @type {?} */
+Builder.prototype.nullCount;
+/** @type {?} */
+Builder.prototype.numChildren;
+/** @type {?} */
+Builder.prototype.byteLength;
+/** @type {?} */
+Builder.prototype.reservedLength;
+/** @type {?} */
+Builder.prototype.reservedByteLength;
+/** @type {?} */
+Builder.prototype.valueOffsets;
+/** @type {?} */
+Builder.prototype.values;
+/** @type {?} */
+Builder.prototype.nullBitmap;
+/** @type {?} */
+Builder.prototype.typeIds;
+/** @type {?} */
+Builder.prototype.append;
+/** @type {?} */
+Builder.prototype.isValid;
+/** @type {?} */
+Builder.prototype.set;
+/** @type {?} */
+Builder.prototype.setValue;
+/** @type {?} */
+Builder.prototype.setValid;
+/** @type {?} */
+Builder.prototype.addChild;
+/** @type {?} */
+Builder.prototype.getChildAt;
+/** @type {?} */
+Builder.prototype.flush;
+/** @type {?} */
+Builder.prototype.finish;
+/** @type {?} */
+Builder.prototype.clear;
+/** @type {?} */
+Builder.prototype.stride;
+/** @type {?} */
+Builder.prototype.children;
+/** @type {?} */
+Builder.prototype.finished;
+/** @type {?} */
+Builder.prototype.nullValues;
+var makeBuilder = function() {};
+var builderThroughIterable = function() {};
+var builderThroughAsyncIterable = function() {};
+var BinaryBuilder = function() {};
+/** @type {?} */
+BinaryBuilder.prototype.byteLength;
+/** @type {?} */
+BinaryBuilder.prototype.setValue;
+var BoolBuilder = function() {};
+/** @type {?} */
+BoolBuilder.prototype.setValue;
+var DateBuilder = function() {};
+var DateDayBuilder = function() {};
+var DateMillisecondBuilder = function() {};
+var DecimalBuilder = function() {};
+var DictionaryBuilder = function() {};
+/** @type {?} */
+DictionaryBuilder.prototype.values;
+/** @type {?} */
+DictionaryBuilder.prototype.nullCount;
+/** @type {?} */
+DictionaryBuilder.prototype.nullBitmap;
+/** @type {?} */
+DictionaryBuilder.prototype.byteLength;
+/** @type {?} */
+DictionaryBuilder.prototype.reservedLength;
+/** @type {?} */
+DictionaryBuilder.prototype.reservedByteLength;
+/** @type {?} */
+DictionaryBuilder.prototype.isValid;
+/** @type {?} */
+DictionaryBuilder.prototype.setValid;
+/** @type {?} */
+DictionaryBuilder.prototype.setValue;
+/** @type {?} */
+DictionaryBuilder.prototype.flush;
+/** @type {?} */
+DictionaryBuilder.prototype.finish;
+/** @type {?} */
+DictionaryBuilder.prototype.clear;
+/** @type {?} */
+DictionaryBuilder.prototype.valueToKey;
+var FixedSizeBinaryBuilder = function() {};
+var FixedSizeListBuilder = function() {};
+/** @type {?} */
+FixedSizeListBuilder.prototype.setValue;
+/** @type {?} */
+FixedSizeListBuilder.prototype.addChild;
+var FloatBuilder = function() {};
+/** @type {?} */
+FloatBuilder.prototype.setValue;
+var Float16Builder = function() {};
+/** @type {?} */
+Float16Builder.prototype.setValue;
+var Float32Builder = function() {};
+var Float64Builder = function() {};
+var IntervalBuilder = function() {};
+var IntervalDayTimeBuilder = function() {};
+var IntervalYearMonthBuilder = function() {};
+var IntBuilder = function() {};
+/** @type {?} */
+IntBuilder.prototype.setValue;
+var Int8Builder = function() {};
+var Int16Builder = function() {};
+var Int32Builder = function() {};
+var Int64Builder = function() {};
+var Uint8Builder = function() {};
+var Uint16Builder = function() {};
+var Uint32Builder = function() {};
+var Uint64Builder = function() {};
+var ListBuilder = function() {};
+/** @type {?} */
+ListBuilder.prototype.addChild;
+var MapBuilder = function() {};
+/** @type {?} */
+MapBuilder.prototype.set;
+/** @type {?} */
+MapBuilder.prototype.setValue;
+/** @type {?} */
+MapBuilder.prototype.addChild;
+var NullBuilder = function() {};
+/** @type {?} */
+NullBuilder.prototype.setValue;
+/** @type {?} */
+NullBuilder.prototype.setValid;
+var StructBuilder = function() {};
+/** @type {?} */
+StructBuilder.prototype.setValue;
+/** @type {?} */
+StructBuilder.prototype.setValid;
+/** @type {?} */
+StructBuilder.prototype.addChild;
+var TimestampBuilder = function() {};
+var TimestampSecondBuilder = function() {};
+var TimestampMillisecondBuilder = function() {};
+var TimestampMicrosecondBuilder = function() {};
+var TimestampNanosecondBuilder = function() {};
+var TimeBuilder = function() {};
+var TimeSecondBuilder = function() {};
+var TimeMillisecondBuilder = function() {};
+var TimeMicrosecondBuilder = function() {};
+var TimeNanosecondBuilder = function() {};
+var UnionBuilder = function() {};
+/** @type {?} */
+UnionBuilder.prototype.typeIdToChildIndex;
+/** @type {?} */
+UnionBuilder.prototype.append;
+/** @type {?} */
+UnionBuilder.prototype.set;
+/** @type {?} */
+UnionBuilder.prototype.setValue;
+/** @type {?} */
+UnionBuilder.prototype.addChild;
+var DenseUnionBuilder = function() {};
+/** @type {?} */
+DenseUnionBuilder.prototype.setValue;
+var SparseUnionBuilder = function() {};
+var Utf8Builder = function() {};
+/** @type {?} */
+Utf8Builder.prototype.byteLength;
+/** @type {?} */
+Utf8Builder.prototype.setValue;
+var BaseInt64 = function() {};
+/** @type {?} */
+BaseInt64.prototype.high;
+/** @type {?} */
+BaseInt64.prototype.low;
+/** @type {?} */
+BaseInt64.prototype.lessThan;
+/** @type {?} */
+BaseInt64.prototype.equals;
+/** @type {?} */
+BaseInt64.prototype.greaterThan;
+/** @type {?} */
+BaseInt64.prototype.hex;
+var Uint64 = function() {};
+/** @type {?} */
+Uint64.from = function() {};
+/** @type {?} */
+Uint64.fromNumber = function() {};
+/** @type {?} */
+Uint64.fromString = function() {};
+/** @type {?} */
+Uint64.convertArray = function() {};
+/** @type {?} */
+Uint64.multiply = function() {};
+/** @type {?} */
+Uint64.add = function() {};
+/** @type {?} */
+Uint64.prototype.times;
+/** @type {?} */
+Uint64.prototype.plus;
+var Int64 = function() {};
+/** @type {?} */
+Int64.from = function() {};
+/** @type {?} */
+Int64.fromNumber = function() {};
+/** @type {?} */
+Int64.fromString = function() {};
+/** @type {?} */
+Int64.convertArray = function() {};
+/** @type {?} */
+Int64.multiply = function() {};
+/** @type {?} */
+Int64.add = function() {};
+/** @type {?} */
+Int64.prototype.negate;
+/** @type {?} */
+Int64.prototype.times;
+/** @type {?} */
+Int64.prototype.plus;
+/** @type {?} */
+Int64.prototype.lessThan;
+var Int128 = function() {};
+/** @type {?} */
+Int128.multiply = function() {};
+/** @type {?} */
+Int128.add = function() {};
+/** @type {?} */
+Int128.from = function() {};
+/** @type {?} */
+Int128.fromNumber = function() {};
+/** @type {?} */
+Int128.fromString = function() {};
+/** @type {?} */
+Int128.convertArray = function() {};
+/** @type {?} */
+Int128.prototype.high;
+/** @type {?} */
+Int128.prototype.low;
+/** @type {?} */
+Int128.prototype.negate;
+/** @type {?} */
+Int128.prototype.times;
+/** @type {?} */
+Int128.prototype.plus;
+/** @type {?} */
+Int128.prototype.hex;
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/Arrow.js b/igv_component/node_modules/apache-arrow/Arrow.js
new file mode 100644
index 0000000000000000000000000000000000000000..a1cf82d06190b430938ecd3bff1cb4892b95b33a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.js
@@ -0,0 +1,205 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Dictionary = exports.SparseUnion = exports.DenseUnion = exports.Union = exports.Struct = exports.List = exports.Decimal = exports.TimeNanosecond = exports.TimeMicrosecond = exports.TimeMillisecond = exports.TimeSecond = exports.Time = exports.TimestampNanosecond = exports.TimestampMicrosecond = exports.TimestampMillisecond = exports.TimestampSecond = exports.Timestamp = exports.DateMillisecond = exports.DateDay = exports.Date_ = exports.FixedSizeBinary = exports.Binary = exports.Utf8 = exports.Float64 = exports.Float32 = exports.Float16 = exports.Float = exports.Uint64 = exports.Uint32 = exports.Uint16 = exports.Uint8 = exports.Int64 = exports.Int32 = exports.Int16 = exports.Int8 = exports.Int = exports.Bool = exports.Null = exports.DataType = exports.makeData = exports.Data = exports.MetadataVersion = exports.IntervalUnit = exports.UnionMode = exports.Precision = exports.TimeUnit = exports.DateUnit = exports.BufferType = exports.Type = exports.MessageHeader = void 0;
+exports.TimestampMillisecondBuilder = exports.TimestampSecondBuilder = exports.TimestampBuilder = exports.TimeNanosecondBuilder = exports.TimeMicrosecondBuilder = exports.TimeMillisecondBuilder = exports.TimeSecondBuilder = exports.TimeBuilder = exports.Uint64Builder = exports.Uint32Builder = exports.Uint16Builder = exports.Uint8Builder = exports.Int64Builder = exports.Int32Builder = exports.Int16Builder = exports.Int8Builder = exports.IntBuilder = exports.Float64Builder = exports.Float32Builder = exports.Float16Builder = exports.FloatBuilder = exports.FixedSizeBinaryBuilder = exports.DictionaryBuilder = exports.DecimalBuilder = exports.DateMillisecondBuilder = exports.DateDayBuilder = exports.DateBuilder = exports.NullBuilder = exports.BoolBuilder = exports.builderThroughAsyncIterable = exports.builderThroughIterable = exports.tableFromJSON = exports.vectorFromArray = exports.makeBuilder = exports.Builder = exports.StructRow = exports.MapRow = exports.Field = exports.Schema = exports.Visitor = exports.makeVector = exports.Vector = exports.tableFromArrays = exports.makeTable = exports.Table = exports.Map_ = exports.FixedSizeList = exports.IntervalYearMonth = exports.IntervalDayTime = exports.Interval = void 0;
+exports.util = exports.RecordBatch = exports.Message = exports.JSONMessageReader = exports.AsyncMessageReader = exports.MessageReader = exports.tableFromIPC = exports.tableToIPC = exports.RecordBatchJSONWriter = exports.RecordBatchStreamWriter = exports.RecordBatchFileWriter = exports.RecordBatchWriter = exports.AsyncRecordBatchStreamReader = exports.AsyncRecordBatchFileReader = exports.RecordBatchStreamReader = exports.RecordBatchFileReader = exports.RecordBatchReader = exports.AsyncByteQueue = exports.AsyncByteStream = exports.ByteStream = exports.DenseUnionBuilder = exports.SparseUnionBuilder = exports.UnionBuilder = exports.StructBuilder = exports.MapBuilder = exports.FixedSizeListBuilder = exports.ListBuilder = exports.BinaryBuilder = exports.Utf8Builder = exports.IntervalYearMonthBuilder = exports.IntervalDayTimeBuilder = exports.IntervalBuilder = exports.TimestampNanosecondBuilder = exports.TimestampMicrosecondBuilder = void 0;
+const tslib_1 = require("tslib");
+var message_header_js_1 = require("./fb/message-header.js");
+Object.defineProperty(exports, "MessageHeader", { enumerable: true, get: function () { return message_header_js_1.MessageHeader; } });
+var enum_js_1 = require("./enum.js");
+Object.defineProperty(exports, "Type", { enumerable: true, get: function () { return enum_js_1.Type; } });
+Object.defineProperty(exports, "BufferType", { enumerable: true, get: function () { return enum_js_1.BufferType; } });
+Object.defineProperty(exports, "DateUnit", { enumerable: true, get: function () { return enum_js_1.DateUnit; } });
+Object.defineProperty(exports, "TimeUnit", { enumerable: true, get: function () { return enum_js_1.TimeUnit; } });
+Object.defineProperty(exports, "Precision", { enumerable: true, get: function () { return enum_js_1.Precision; } });
+Object.defineProperty(exports, "UnionMode", { enumerable: true, get: function () { return enum_js_1.UnionMode; } });
+Object.defineProperty(exports, "IntervalUnit", { enumerable: true, get: function () { return enum_js_1.IntervalUnit; } });
+Object.defineProperty(exports, "MetadataVersion", { enumerable: true, get: function () { return enum_js_1.MetadataVersion; } });
+var data_js_1 = require("./data.js");
+Object.defineProperty(exports, "Data", { enumerable: true, get: function () { return data_js_1.Data; } });
+Object.defineProperty(exports, "makeData", { enumerable: true, get: function () { return data_js_1.makeData; } });
+var type_js_1 = require("./type.js");
+Object.defineProperty(exports, "DataType", { enumerable: true, get: function () { return type_js_1.DataType; } });
+Object.defineProperty(exports, "Null", { enumerable: true, get: function () { return type_js_1.Null; } });
+Object.defineProperty(exports, "Bool", { enumerable: true, get: function () { return type_js_1.Bool; } });
+Object.defineProperty(exports, "Int", { enumerable: true, get: function () { return type_js_1.Int; } });
+Object.defineProperty(exports, "Int8", { enumerable: true, get: function () { return type_js_1.Int8; } });
+Object.defineProperty(exports, "Int16", { enumerable: true, get: function () { return type_js_1.Int16; } });
+Object.defineProperty(exports, "Int32", { enumerable: true, get: function () { return type_js_1.Int32; } });
+Object.defineProperty(exports, "Int64", { enumerable: true, get: function () { return type_js_1.Int64; } });
+Object.defineProperty(exports, "Uint8", { enumerable: true, get: function () { return type_js_1.Uint8; } });
+Object.defineProperty(exports, "Uint16", { enumerable: true, get: function () { return type_js_1.Uint16; } });
+Object.defineProperty(exports, "Uint32", { enumerable: true, get: function () { return type_js_1.Uint32; } });
+Object.defineProperty(exports, "Uint64", { enumerable: true, get: function () { return type_js_1.Uint64; } });
+Object.defineProperty(exports, "Float", { enumerable: true, get: function () { return type_js_1.Float; } });
+Object.defineProperty(exports, "Float16", { enumerable: true, get: function () { return type_js_1.Float16; } });
+Object.defineProperty(exports, "Float32", { enumerable: true, get: function () { return type_js_1.Float32; } });
+Object.defineProperty(exports, "Float64", { enumerable: true, get: function () { return type_js_1.Float64; } });
+Object.defineProperty(exports, "Utf8", { enumerable: true, get: function () { return type_js_1.Utf8; } });
+Object.defineProperty(exports, "Binary", { enumerable: true, get: function () { return type_js_1.Binary; } });
+Object.defineProperty(exports, "FixedSizeBinary", { enumerable: true, get: function () { return type_js_1.FixedSizeBinary; } });
+Object.defineProperty(exports, "Date_", { enumerable: true, get: function () { return type_js_1.Date_; } });
+Object.defineProperty(exports, "DateDay", { enumerable: true, get: function () { return type_js_1.DateDay; } });
+Object.defineProperty(exports, "DateMillisecond", { enumerable: true, get: function () { return type_js_1.DateMillisecond; } });
+Object.defineProperty(exports, "Timestamp", { enumerable: true, get: function () { return type_js_1.Timestamp; } });
+Object.defineProperty(exports, "TimestampSecond", { enumerable: true, get: function () { return type_js_1.TimestampSecond; } });
+Object.defineProperty(exports, "TimestampMillisecond", { enumerable: true, get: function () { return type_js_1.TimestampMillisecond; } });
+Object.defineProperty(exports, "TimestampMicrosecond", { enumerable: true, get: function () { return type_js_1.TimestampMicrosecond; } });
+Object.defineProperty(exports, "TimestampNanosecond", { enumerable: true, get: function () { return type_js_1.TimestampNanosecond; } });
+Object.defineProperty(exports, "Time", { enumerable: true, get: function () { return type_js_1.Time; } });
+Object.defineProperty(exports, "TimeSecond", { enumerable: true, get: function () { return type_js_1.TimeSecond; } });
+Object.defineProperty(exports, "TimeMillisecond", { enumerable: true, get: function () { return type_js_1.TimeMillisecond; } });
+Object.defineProperty(exports, "TimeMicrosecond", { enumerable: true, get: function () { return type_js_1.TimeMicrosecond; } });
+Object.defineProperty(exports, "TimeNanosecond", { enumerable: true, get: function () { return type_js_1.TimeNanosecond; } });
+Object.defineProperty(exports, "Decimal", { enumerable: true, get: function () { return type_js_1.Decimal; } });
+Object.defineProperty(exports, "List", { enumerable: true, get: function () { return type_js_1.List; } });
+Object.defineProperty(exports, "Struct", { enumerable: true, get: function () { return type_js_1.Struct; } });
+Object.defineProperty(exports, "Union", { enumerable: true, get: function () { return type_js_1.Union; } });
+Object.defineProperty(exports, "DenseUnion", { enumerable: true, get: function () { return type_js_1.DenseUnion; } });
+Object.defineProperty(exports, "SparseUnion", { enumerable: true, get: function () { return type_js_1.SparseUnion; } });
+Object.defineProperty(exports, "Dictionary", { enumerable: true, get: function () { return type_js_1.Dictionary; } });
+Object.defineProperty(exports, "Interval", { enumerable: true, get: function () { return type_js_1.Interval; } });
+Object.defineProperty(exports, "IntervalDayTime", { enumerable: true, get: function () { return type_js_1.IntervalDayTime; } });
+Object.defineProperty(exports, "IntervalYearMonth", { enumerable: true, get: function () { return type_js_1.IntervalYearMonth; } });
+Object.defineProperty(exports, "FixedSizeList", { enumerable: true, get: function () { return type_js_1.FixedSizeList; } });
+Object.defineProperty(exports, "Map_", { enumerable: true, get: function () { return type_js_1.Map_; } });
+var table_js_1 = require("./table.js");
+Object.defineProperty(exports, "Table", { enumerable: true, get: function () { return table_js_1.Table; } });
+Object.defineProperty(exports, "makeTable", { enumerable: true, get: function () { return table_js_1.makeTable; } });
+Object.defineProperty(exports, "tableFromArrays", { enumerable: true, get: function () { return table_js_1.tableFromArrays; } });
+var vector_js_1 = require("./vector.js");
+Object.defineProperty(exports, "Vector", { enumerable: true, get: function () { return vector_js_1.Vector; } });
+Object.defineProperty(exports, "makeVector", { enumerable: true, get: function () { return vector_js_1.makeVector; } });
+var visitor_js_1 = require("./visitor.js");
+Object.defineProperty(exports, "Visitor", { enumerable: true, get: function () { return visitor_js_1.Visitor; } });
+var schema_js_1 = require("./schema.js");
+Object.defineProperty(exports, "Schema", { enumerable: true, get: function () { return schema_js_1.Schema; } });
+Object.defineProperty(exports, "Field", { enumerable: true, get: function () { return schema_js_1.Field; } });
+var map_js_1 = require("./row/map.js");
+Object.defineProperty(exports, "MapRow", { enumerable: true, get: function () { return map_js_1.MapRow; } });
+var struct_js_1 = require("./row/struct.js");
+Object.defineProperty(exports, "StructRow", { enumerable: true, get: function () { return struct_js_1.StructRow; } });
+var builder_js_1 = require("./builder.js");
+Object.defineProperty(exports, "Builder", { enumerable: true, get: function () { return builder_js_1.Builder; } });
+var factories_js_1 = require("./factories.js");
+Object.defineProperty(exports, "makeBuilder", { enumerable: true, get: function () { return factories_js_1.makeBuilder; } });
+Object.defineProperty(exports, "vectorFromArray", { enumerable: true, get: function () { return factories_js_1.vectorFromArray; } });
+Object.defineProperty(exports, "tableFromJSON", { enumerable: true, get: function () { return factories_js_1.tableFromJSON; } });
+Object.defineProperty(exports, "builderThroughIterable", { enumerable: true, get: function () { return factories_js_1.builderThroughIterable; } });
+Object.defineProperty(exports, "builderThroughAsyncIterable", { enumerable: true, get: function () { return factories_js_1.builderThroughAsyncIterable; } });
+var bool_js_1 = require("./builder/bool.js");
+Object.defineProperty(exports, "BoolBuilder", { enumerable: true, get: function () { return bool_js_1.BoolBuilder; } });
+var null_js_1 = require("./builder/null.js");
+Object.defineProperty(exports, "NullBuilder", { enumerable: true, get: function () { return null_js_1.NullBuilder; } });
+var date_js_1 = require("./builder/date.js");
+Object.defineProperty(exports, "DateBuilder", { enumerable: true, get: function () { return date_js_1.DateBuilder; } });
+Object.defineProperty(exports, "DateDayBuilder", { enumerable: true, get: function () { return date_js_1.DateDayBuilder; } });
+Object.defineProperty(exports, "DateMillisecondBuilder", { enumerable: true, get: function () { return date_js_1.DateMillisecondBuilder; } });
+var decimal_js_1 = require("./builder/decimal.js");
+Object.defineProperty(exports, "DecimalBuilder", { enumerable: true, get: function () { return decimal_js_1.DecimalBuilder; } });
+var dictionary_js_1 = require("./builder/dictionary.js");
+Object.defineProperty(exports, "DictionaryBuilder", { enumerable: true, get: function () { return dictionary_js_1.DictionaryBuilder; } });
+var fixedsizebinary_js_1 = require("./builder/fixedsizebinary.js");
+Object.defineProperty(exports, "FixedSizeBinaryBuilder", { enumerable: true, get: function () { return fixedsizebinary_js_1.FixedSizeBinaryBuilder; } });
+var float_js_1 = require("./builder/float.js");
+Object.defineProperty(exports, "FloatBuilder", { enumerable: true, get: function () { return float_js_1.FloatBuilder; } });
+Object.defineProperty(exports, "Float16Builder", { enumerable: true, get: function () { return float_js_1.Float16Builder; } });
+Object.defineProperty(exports, "Float32Builder", { enumerable: true, get: function () { return float_js_1.Float32Builder; } });
+Object.defineProperty(exports, "Float64Builder", { enumerable: true, get: function () { return float_js_1.Float64Builder; } });
+var int_js_1 = require("./builder/int.js");
+Object.defineProperty(exports, "IntBuilder", { enumerable: true, get: function () { return int_js_1.IntBuilder; } });
+Object.defineProperty(exports, "Int8Builder", { enumerable: true, get: function () { return int_js_1.Int8Builder; } });
+Object.defineProperty(exports, "Int16Builder", { enumerable: true, get: function () { return int_js_1.Int16Builder; } });
+Object.defineProperty(exports, "Int32Builder", { enumerable: true, get: function () { return int_js_1.Int32Builder; } });
+Object.defineProperty(exports, "Int64Builder", { enumerable: true, get: function () { return int_js_1.Int64Builder; } });
+Object.defineProperty(exports, "Uint8Builder", { enumerable: true, get: function () { return int_js_1.Uint8Builder; } });
+Object.defineProperty(exports, "Uint16Builder", { enumerable: true, get: function () { return int_js_1.Uint16Builder; } });
+Object.defineProperty(exports, "Uint32Builder", { enumerable: true, get: function () { return int_js_1.Uint32Builder; } });
+Object.defineProperty(exports, "Uint64Builder", { enumerable: true, get: function () { return int_js_1.Uint64Builder; } });
+var time_js_1 = require("./builder/time.js");
+Object.defineProperty(exports, "TimeBuilder", { enumerable: true, get: function () { return time_js_1.TimeBuilder; } });
+Object.defineProperty(exports, "TimeSecondBuilder", { enumerable: true, get: function () { return time_js_1.TimeSecondBuilder; } });
+Object.defineProperty(exports, "TimeMillisecondBuilder", { enumerable: true, get: function () { return time_js_1.TimeMillisecondBuilder; } });
+Object.defineProperty(exports, "TimeMicrosecondBuilder", { enumerable: true, get: function () { return time_js_1.TimeMicrosecondBuilder; } });
+Object.defineProperty(exports, "TimeNanosecondBuilder", { enumerable: true, get: function () { return time_js_1.TimeNanosecondBuilder; } });
+var timestamp_js_1 = require("./builder/timestamp.js");
+Object.defineProperty(exports, "TimestampBuilder", { enumerable: true, get: function () { return timestamp_js_1.TimestampBuilder; } });
+Object.defineProperty(exports, "TimestampSecondBuilder", { enumerable: true, get: function () { return timestamp_js_1.TimestampSecondBuilder; } });
+Object.defineProperty(exports, "TimestampMillisecondBuilder", { enumerable: true, get: function () { return timestamp_js_1.TimestampMillisecondBuilder; } });
+Object.defineProperty(exports, "TimestampMicrosecondBuilder", { enumerable: true, get: function () { return timestamp_js_1.TimestampMicrosecondBuilder; } });
+Object.defineProperty(exports, "TimestampNanosecondBuilder", { enumerable: true, get: function () { return timestamp_js_1.TimestampNanosecondBuilder; } });
+var interval_js_1 = require("./builder/interval.js");
+Object.defineProperty(exports, "IntervalBuilder", { enumerable: true, get: function () { return interval_js_1.IntervalBuilder; } });
+Object.defineProperty(exports, "IntervalDayTimeBuilder", { enumerable: true, get: function () { return interval_js_1.IntervalDayTimeBuilder; } });
+Object.defineProperty(exports, "IntervalYearMonthBuilder", { enumerable: true, get: function () { return interval_js_1.IntervalYearMonthBuilder; } });
+var utf8_js_1 = require("./builder/utf8.js");
+Object.defineProperty(exports, "Utf8Builder", { enumerable: true, get: function () { return utf8_js_1.Utf8Builder; } });
+var binary_js_1 = require("./builder/binary.js");
+Object.defineProperty(exports, "BinaryBuilder", { enumerable: true, get: function () { return binary_js_1.BinaryBuilder; } });
+var list_js_1 = require("./builder/list.js");
+Object.defineProperty(exports, "ListBuilder", { enumerable: true, get: function () { return list_js_1.ListBuilder; } });
+var fixedsizelist_js_1 = require("./builder/fixedsizelist.js");
+Object.defineProperty(exports, "FixedSizeListBuilder", { enumerable: true, get: function () { return fixedsizelist_js_1.FixedSizeListBuilder; } });
+var map_js_2 = require("./builder/map.js");
+Object.defineProperty(exports, "MapBuilder", { enumerable: true, get: function () { return map_js_2.MapBuilder; } });
+var struct_js_2 = require("./builder/struct.js");
+Object.defineProperty(exports, "StructBuilder", { enumerable: true, get: function () { return struct_js_2.StructBuilder; } });
+var union_js_1 = require("./builder/union.js");
+Object.defineProperty(exports, "UnionBuilder", { enumerable: true, get: function () { return union_js_1.UnionBuilder; } });
+Object.defineProperty(exports, "SparseUnionBuilder", { enumerable: true, get: function () { return union_js_1.SparseUnionBuilder; } });
+Object.defineProperty(exports, "DenseUnionBuilder", { enumerable: true, get: function () { return union_js_1.DenseUnionBuilder; } });
+var stream_js_1 = require("./io/stream.js");
+Object.defineProperty(exports, "ByteStream", { enumerable: true, get: function () { return stream_js_1.ByteStream; } });
+Object.defineProperty(exports, "AsyncByteStream", { enumerable: true, get: function () { return stream_js_1.AsyncByteStream; } });
+Object.defineProperty(exports, "AsyncByteQueue", { enumerable: true, get: function () { return stream_js_1.AsyncByteQueue; } });
+var reader_js_1 = require("./ipc/reader.js");
+Object.defineProperty(exports, "RecordBatchReader", { enumerable: true, get: function () { return reader_js_1.RecordBatchReader; } });
+Object.defineProperty(exports, "RecordBatchFileReader", { enumerable: true, get: function () { return reader_js_1.RecordBatchFileReader; } });
+Object.defineProperty(exports, "RecordBatchStreamReader", { enumerable: true, get: function () { return reader_js_1.RecordBatchStreamReader; } });
+Object.defineProperty(exports, "AsyncRecordBatchFileReader", { enumerable: true, get: function () { return reader_js_1.AsyncRecordBatchFileReader; } });
+Object.defineProperty(exports, "AsyncRecordBatchStreamReader", { enumerable: true, get: function () { return reader_js_1.AsyncRecordBatchStreamReader; } });
+var writer_js_1 = require("./ipc/writer.js");
+Object.defineProperty(exports, "RecordBatchWriter", { enumerable: true, get: function () { return writer_js_1.RecordBatchWriter; } });
+Object.defineProperty(exports, "RecordBatchFileWriter", { enumerable: true, get: function () { return writer_js_1.RecordBatchFileWriter; } });
+Object.defineProperty(exports, "RecordBatchStreamWriter", { enumerable: true, get: function () { return writer_js_1.RecordBatchStreamWriter; } });
+Object.defineProperty(exports, "RecordBatchJSONWriter", { enumerable: true, get: function () { return writer_js_1.RecordBatchJSONWriter; } });
+var serialization_js_1 = require("./ipc/serialization.js");
+Object.defineProperty(exports, "tableToIPC", { enumerable: true, get: function () { return serialization_js_1.tableToIPC; } });
+Object.defineProperty(exports, "tableFromIPC", { enumerable: true, get: function () { return serialization_js_1.tableFromIPC; } });
+var message_js_1 = require("./ipc/message.js");
+Object.defineProperty(exports, "MessageReader", { enumerable: true, get: function () { return message_js_1.MessageReader; } });
+Object.defineProperty(exports, "AsyncMessageReader", { enumerable: true, get: function () { return message_js_1.AsyncMessageReader; } });
+Object.defineProperty(exports, "JSONMessageReader", { enumerable: true, get: function () { return message_js_1.JSONMessageReader; } });
+var message_js_2 = require("./ipc/metadata/message.js");
+Object.defineProperty(exports, "Message", { enumerable: true, get: function () { return message_js_2.Message; } });
+var recordbatch_js_1 = require("./recordbatch.js");
+Object.defineProperty(exports, "RecordBatch", { enumerable: true, get: function () { return recordbatch_js_1.RecordBatch; } });
+const util_bn_ = tslib_1.__importStar(require("./util/bn.js"));
+const util_int_ = tslib_1.__importStar(require("./util/int.js"));
+const util_bit_ = tslib_1.__importStar(require("./util/bit.js"));
+const util_math_ = tslib_1.__importStar(require("./util/math.js"));
+const util_buffer_ = tslib_1.__importStar(require("./util/buffer.js"));
+const util_vector_ = tslib_1.__importStar(require("./util/vector.js"));
+const typecomparator_js_1 = require("./visitor/typecomparator.js");
+/** @ignore */
+exports.util = Object.assign(Object.assign(Object.assign(Object.assign(Object.assign(Object.assign(Object.assign({}, util_bn_), util_int_), util_bit_), util_math_), util_buffer_), util_vector_), { compareSchemas: typecomparator_js_1.compareSchemas,
+    compareFields: typecomparator_js_1.compareFields,
+    compareTypes: typecomparator_js_1.compareTypes });
+
+//# sourceMappingURL=Arrow.js.map
diff --git a/igv_component/node_modules/apache-arrow/Arrow.js.map b/igv_component/node_modules/apache-arrow/Arrow.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..7111cfb534b0b2c07a6f929599c3d0c2f054f1d5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/Arrow.mjs b/igv_component/node_modules/apache-arrow/Arrow.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..2472828c4b5cbd2c901600fbf8764e824e1651c1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.mjs
@@ -0,0 +1,66 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+export { MessageHeader } from './fb/message-header.mjs';
+export { Type, BufferType, DateUnit, TimeUnit, Precision, UnionMode, IntervalUnit, MetadataVersion, } from './enum.mjs';
+export { Data, makeData } from './data.mjs';
+export { DataType, Null, Bool, Int, Int8, Int16, Int32, Int64, Uint8, Uint16, Uint32, Uint64, Float, Float16, Float32, Float64, Utf8, Binary, FixedSizeBinary, Date_, DateDay, DateMillisecond, Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond, Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond, Decimal, List, Struct, Union, DenseUnion, SparseUnion, Dictionary, Interval, IntervalDayTime, IntervalYearMonth, FixedSizeList, Map_ } from './type.mjs';
+export { Table, makeTable, tableFromArrays } from './table.mjs';
+export { Vector, makeVector } from './vector.mjs';
+export { Visitor } from './visitor.mjs';
+export { Schema, Field } from './schema.mjs';
+export { MapRow } from './row/map.mjs';
+export { StructRow } from './row/struct.mjs';
+export { Builder } from './builder.mjs';
+export { makeBuilder, vectorFromArray, tableFromJSON, builderThroughIterable, builderThroughAsyncIterable } from './factories.mjs';
+export { BoolBuilder } from './builder/bool.mjs';
+export { NullBuilder } from './builder/null.mjs';
+export { DateBuilder, DateDayBuilder, DateMillisecondBuilder } from './builder/date.mjs';
+export { DecimalBuilder } from './builder/decimal.mjs';
+export { DictionaryBuilder } from './builder/dictionary.mjs';
+export { FixedSizeBinaryBuilder } from './builder/fixedsizebinary.mjs';
+export { FloatBuilder, Float16Builder, Float32Builder, Float64Builder } from './builder/float.mjs';
+export { IntBuilder, Int8Builder, Int16Builder, Int32Builder, Int64Builder, Uint8Builder, Uint16Builder, Uint32Builder, Uint64Builder } from './builder/int.mjs';
+export { TimeBuilder, TimeSecondBuilder, TimeMillisecondBuilder, TimeMicrosecondBuilder, TimeNanosecondBuilder } from './builder/time.mjs';
+export { TimestampBuilder, TimestampSecondBuilder, TimestampMillisecondBuilder, TimestampMicrosecondBuilder, TimestampNanosecondBuilder } from './builder/timestamp.mjs';
+export { IntervalBuilder, IntervalDayTimeBuilder, IntervalYearMonthBuilder } from './builder/interval.mjs';
+export { Utf8Builder } from './builder/utf8.mjs';
+export { BinaryBuilder } from './builder/binary.mjs';
+export { ListBuilder } from './builder/list.mjs';
+export { FixedSizeListBuilder } from './builder/fixedsizelist.mjs';
+export { MapBuilder } from './builder/map.mjs';
+export { StructBuilder } from './builder/struct.mjs';
+export { UnionBuilder, SparseUnionBuilder, DenseUnionBuilder } from './builder/union.mjs';
+export { ByteStream, AsyncByteStream, AsyncByteQueue } from './io/stream.mjs';
+export { RecordBatchReader, RecordBatchFileReader, RecordBatchStreamReader, AsyncRecordBatchFileReader, AsyncRecordBatchStreamReader } from './ipc/reader.mjs';
+export { RecordBatchWriter, RecordBatchFileWriter, RecordBatchStreamWriter, RecordBatchJSONWriter } from './ipc/writer.mjs';
+export { tableToIPC, tableFromIPC } from './ipc/serialization.mjs';
+export { MessageReader, AsyncMessageReader, JSONMessageReader } from './ipc/message.mjs';
+export { Message } from './ipc/metadata/message.mjs';
+export { RecordBatch } from './recordbatch.mjs';
+import * as util_bn_ from './util/bn.mjs';
+import * as util_int_ from './util/int.mjs';
+import * as util_bit_ from './util/bit.mjs';
+import * as util_math_ from './util/math.mjs';
+import * as util_buffer_ from './util/buffer.mjs';
+import * as util_vector_ from './util/vector.mjs';
+import { compareSchemas, compareFields, compareTypes } from './visitor/typecomparator.mjs';
+/** @ignore */
+export const util = Object.assign(Object.assign(Object.assign(Object.assign(Object.assign(Object.assign(Object.assign({}, util_bn_), util_int_), util_bit_), util_math_), util_buffer_), util_vector_), { compareSchemas,
+    compareFields,
+    compareTypes });
+
+//# sourceMappingURL=Arrow.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/Arrow.mjs.map b/igv_component/node_modules/apache-arrow/Arrow.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..0747316b74b131b926e76671a43eeba5b8e498a6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["Arrow.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,EAAE,aAAa,EAAE,MAAM,wBAAwB,CAAC;AAEvD,OAAO,EACH,IAAI,EACJ,UAAU,EACV,QAAQ,EACR,QAAQ,EACR,SAAS,EACT,SAAS,EACT,YAAY,EACZ,eAAe,GAClB,MAAM,WAAW,CAAC;AAEnB,OAAO,EAAE,IAAI,EAAE,QAAQ,EAAE,MAAM,WAAW,CAAC;AAE3C,OAAO,EACH,QAAQ,EACR,IAAI,EACJ,IAAI,EACJ,GAAG,EAAE,IAAI,EAAE,KAAK,EAAE,KAAK,EAAE,KAAK,EAAE,KAAK,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,EAC7D,KAAK,EAAE,OAAO,EAAE,OAAO,EAAE,OAAO,EAChC,IAAI,EACJ,MAAM,EACN,eAAe,EACf,KAAK,EAAE,OAAO,EAAE,eAAe,EAC/B,SAAS,EAAE,eAAe,EAAE,oBAAoB,EAAE,oBAAoB,EAAE,mBAAmB,EAC3F,IAAI,EAAE,UAAU,EAAE,eAAe,EAAE,eAAe,EAAE,cAAc,EAClE,OAAO,EACP,IAAI,EACJ,MAAM,EACN,KAAK,EAAE,UAAU,EAAE,WAAW,EAC9B,UAAU,EACV,QAAQ,EAAE,eAAe,EAAE,iBAAiB,EAC5C,aAAa,EACb,IAAI,EACP,MAAM,WAAW,CAAC;AAEnB,OAAO,EAAE,KAAK,EAAE,SAAS,EAAE,eAAe,EAAE,MAAM,YAAY,CAAC;AAC/D,OAAO,EAAE,MAAM,EAAE,UAAU,EAAE,MAAM,aAAa,CAAC;AACjD,OAAO,EAAE,OAAO,EAAE,MAAM,cAAc,CAAC;AACvC,OAAO,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM,aAAa,CAAC;AAE5C,OAAO,EAAE,MAAM,EAAE,MAAM,cAAc,CAAC;AACtC,OAAO,EAAE,SAAS,EAAE,MAAM,iBAAiB,CAAC;AAG5C,OAAO,EAAE,OAAO,EAAE,MAAM,cAAc,CAAC;AACvC,OAAO,EAAE,WAAW,EAAE,eAAe,EAAE,aAAa,EAAE,sBAAsB,EAAE,2BAA2B,EAAE,MAAM,gBAAgB,CAAC;AAElI,OAAO,EAAE,WAAW,EAAE,MAAM,mBAAmB,CAAC;AAChD,OAAO,EAAE,WAAW,EAAE,MAAM,mBAAmB,CAAC;AAChD,OAAO,EAAE,WAAW,EAAE,cAAc,EAAE,sBAAsB,EAAE,MAAM,mBAAmB,CAAC;AACxF,OAAO,EAAE,cAAc,EAAE,MAAM,sBAAsB,CAAC;AACtD,OAAO,EAAE,iBAAiB,EAAE,MAAM,yBAAyB,CAAC;AAC5D,OAAO,EAAE,sBAAsB,EAAE,MAAM,8BAA8B,CAAC;AACtE,OAAO,EAAE,YAAY,EAAE,cAAc,EAAE,cAAc,EAAE,cAAc,EAAE,MAAM,oBAAoB,CAAC;AAClG,OAAO,EAAE,UAAU,EAAE,WAAW,EAAE,YAAY,EAAE,YAAY,EAAE,YAAY,EAAE,YAAY,EAAE,aAAa,EAAE,aAAa,EAAE,aAAa,EAAE,MAAM,kBAAkB,CAAC;AAChK,OAAO,EAAE,WAAW,EAAE,iBAAiB,EAAE,sBAAsB,EAAE,sBAAsB,EAAE,qBAAqB,EAAE,MAAM,mBAAmB,CAAC;AAC1I,OAAO,EAAE,gBAAgB,EAAE,sBAAsB,EAAE,2BAA2B,EAAE,2BAA2B,EAAE,0BAA0B,EAAE,MAAM,wBAAwB,CAAC;AACxK,OAAO,EAAE,eAAe,EAAE,sBAAsB,EAAE,wBAAwB,EAAE,MAAM,uBAAuB,CAAC;AAC1G,OAAO,EAAE,WAAW,EAAE,MAAM,mBAAmB,CAAC;AAChD,OAAO,EAAE,aAAa,EAAE,MAAM,qBAAqB,CAAC;AACpD,OAAO,EAAE,WAAW,EAAE,MAAM,mBAAmB,CAAC;AAChD,OAAO,EAAE,oBAAoB,EAAE,MAAM,4BAA4B,CAAC;AAClE,OAAO,EAAE,UAAU,EAAE,MAAM,kBAAkB,CAAC;AAC9C,OAAO,EAAE,aAAa,EAAE,MAAM,qBAAqB,CAAC;AACpD,OAAO,EAAE,YAAY,EAAE,kBAAkB,EAAE,iBAAiB,EAAE,MAAM,oBAAoB,CAAC;AAEzF,OAAO,EAAE,UAAU,EAAE,eAAe,EAAE,cAAc,EAAE,MAAM,gBAAgB,CAAC;AAE7E,OAAO,EAAE,iBAAiB,EAAE,qBAAqB,EAAE,uBAAuB,EAAE,0BAA0B,EAAE,4BAA4B,EAAE,MAAM,iBAAiB,CAAC;AAC9J,OAAO,EAAE,iBAAiB,EAAE,qBAAqB,EAAE,uBAAuB,EAAE,qBAAqB,EAAE,MAAM,iBAAiB,CAAC;AAC3H,OAAO,EAAE,UAAU,EAAE,YAAY,EAAE,MAAM,wBAAwB,CAAC;AAClE,OAAO,EAAE,aAAa,EAAE,kBAAkB,EAAE,iBAAiB,EAAE,MAAM,kBAAkB,CAAC;AACxF,OAAO,EAAE,OAAO,EAAE,MAAM,2BAA2B,CAAC;AACpD,OAAO,EAAE,WAAW,EAAE,MAAM,kBAAkB,CAAC;AAG/C,OAAO,KAAK,QAAQ,MAAM,cAAc,CAAC;AACzC,OAAO,KAAK,SAAS,MAAM,eAAe,CAAC;AAC3C,OAAO,KAAK,SAAS,MAAM,eAAe,CAAC;AAC3C,OAAO,KAAK,UAAU,MAAM,gBAAgB,CAAC;AAC7C,OAAO,KAAK,YAAY,MAAM,kBAAkB,CAAC;AACjD,OAAO,KAAK,YAAY,MAAM,kBAAkB,CAAC;AACjD,OAAO,EAAE,cAAc,EAAE,aAAa,EAAE,YAAY,EAAE,MAAM,6BAA6B,CAAC;AAE1F,cAAc;AACd,MAAM,CAAC,MAAM,IAAI,yGACV,QAAQ,GACR,SAAS,GACT,SAAS,GACT,UAAU,GACV,YAAY,GACZ,YAAY,KACf,cAAc;IACd,aAAa;IACb,YAAY,GACf,CAAC","file":"Arrow.js","sourceRoot":"src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/Arrow.node.d.ts b/igv_component/node_modules/apache-arrow/Arrow.node.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..52edd0fa1f96b8e3c5ffdb2aa6e2a6f78a0b8efd
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.node.d.ts
@@ -0,0 +1 @@
+export * from './Arrow.dom.js';
diff --git a/igv_component/node_modules/apache-arrow/Arrow.node.d.ts.map b/igv_component/node_modules/apache-arrow/Arrow.node.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..50d0ebdcc5a06bf60feb3a8d547de5216361970c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.node.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["Arrow.node.ts"],"names":[],"mappings":"AA+BA,cAAc,gBAAgB,CAAC","file":"Arrow.node.d.ts","sourceRoot":"src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/Arrow.node.js b/igv_component/node_modules/apache-arrow/Arrow.node.js
new file mode 100644
index 0000000000000000000000000000000000000000..cc76278c293fc991ec3d0fc1950e867454c13350
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.node.js
@@ -0,0 +1,34 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+const adapters_js_1 = tslib_1.__importDefault(require("./io/adapters.js"));
+const builder_js_1 = require("./builder.js");
+const reader_js_1 = require("./ipc/reader.js");
+const writer_js_1 = require("./ipc/writer.js");
+const iterable_js_1 = require("./io/node/iterable.js");
+const builder_js_2 = require("./io/node/builder.js");
+const reader_js_2 = require("./io/node/reader.js");
+const writer_js_2 = require("./io/node/writer.js");
+adapters_js_1.default.toNodeStream = iterable_js_1.toNodeStream;
+builder_js_1.Builder['throughNode'] = builder_js_2.builderThroughNodeStream;
+reader_js_1.RecordBatchReader['throughNode'] = reader_js_2.recordBatchReaderThroughNodeStream;
+writer_js_1.RecordBatchWriter['throughNode'] = writer_js_2.recordBatchWriterThroughNodeStream;
+tslib_1.__exportStar(require("./Arrow.dom.js"), exports);
+
+//# sourceMappingURL=Arrow.node.js.map
diff --git a/igv_component/node_modules/apache-arrow/Arrow.node.js.map b/igv_component/node_modules/apache-arrow/Arrow.node.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..419bad4b6fd9fdf7826584cf51abbd77c4a47d0c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.node.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["Arrow.node.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,2EAA8C;AAC9C,6CAAuC;AACvC,+CAAoD;AACpD,+CAAoD;AACpD,uDAAqD;AACrD,qDAAgE;AAChE,mDAAyE;AACzE,mDAAyE;AAEzE,qBAAc,CAAC,YAAY,GAAG,0BAAY,CAAC;AAC3C,oBAAO,CAAC,aAAa,CAAC,GAAG,qCAAwB,CAAC;AAClD,6BAAiB,CAAC,aAAa,CAAC,GAAG,8CAAkC,CAAC;AACtE,6BAAiB,CAAC,aAAa,CAAC,GAAG,8CAAkC,CAAC;AAEtE,yDAA+B","file":"Arrow.node.js","sourceRoot":"src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/Arrow.node.mjs b/igv_component/node_modules/apache-arrow/Arrow.node.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..af8ff64a4f83703dabf6589df339175e647c610a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.node.mjs
@@ -0,0 +1,31 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import streamAdapters from './io/adapters.mjs';
+import { Builder } from './builder.mjs';
+import { RecordBatchReader } from './ipc/reader.mjs';
+import { RecordBatchWriter } from './ipc/writer.mjs';
+import { toNodeStream } from './io/node/iterable.mjs';
+import { builderThroughNodeStream } from './io/node/builder.mjs';
+import { recordBatchReaderThroughNodeStream } from './io/node/reader.mjs';
+import { recordBatchWriterThroughNodeStream } from './io/node/writer.mjs';
+streamAdapters.toNodeStream = toNodeStream;
+Builder['throughNode'] = builderThroughNodeStream;
+RecordBatchReader['throughNode'] = recordBatchReaderThroughNodeStream;
+RecordBatchWriter['throughNode'] = recordBatchWriterThroughNodeStream;
+export * from './Arrow.dom.mjs';
+
+//# sourceMappingURL=Arrow.node.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/Arrow.node.mjs.map b/igv_component/node_modules/apache-arrow/Arrow.node.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..e4edb9ceb0f2ddc2e9f769d59175286bd9810a54
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/Arrow.node.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["Arrow.node.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,cAAc,MAAM,kBAAkB,CAAC;AAC9C,OAAO,EAAE,OAAO,EAAE,MAAM,cAAc,CAAC;AACvC,OAAO,EAAE,iBAAiB,EAAE,MAAM,iBAAiB,CAAC;AACpD,OAAO,EAAE,iBAAiB,EAAE,MAAM,iBAAiB,CAAC;AACpD,OAAO,EAAE,YAAY,EAAE,MAAM,uBAAuB,CAAC;AACrD,OAAO,EAAE,wBAAwB,EAAE,MAAM,sBAAsB,CAAC;AAChE,OAAO,EAAE,kCAAkC,EAAE,MAAM,qBAAqB,CAAC;AACzE,OAAO,EAAE,kCAAkC,EAAE,MAAM,qBAAqB,CAAC;AAEzE,cAAc,CAAC,YAAY,GAAG,YAAY,CAAC;AAC3C,OAAO,CAAC,aAAa,CAAC,GAAG,wBAAwB,CAAC;AAClD,iBAAiB,CAAC,aAAa,CAAC,GAAG,kCAAkC,CAAC;AACtE,iBAAiB,CAAC,aAAa,CAAC,GAAG,kCAAkC,CAAC;AAEtE,cAAc,gBAAgB,CAAC","file":"Arrow.node.js","sourceRoot":"src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/LICENSE.txt b/igv_component/node_modules/apache-arrow/LICENSE.txt
new file mode 100644
index 0000000000000000000000000000000000000000..86cfaf546ca2efdf0b26e98e289eeab1bfc2e421
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/LICENSE.txt
@@ -0,0 +1,2338 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
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+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
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+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
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+   2. Grant of Copyright License. Subject to the terms and conditions of
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+   4. Redistribution. You may reproduce and distribute copies of the
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+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
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+      reproduction, and distribution of the Work otherwise complies with
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+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+   8. Limitation of Liability. In no event and under no legal theory,
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+--------------------------------------------------------------------------------
+
+src/plasma/thirdparty/dlmalloc.c: CC0
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+--------------------------------------------------------------------------------
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+--------------------------------------------------------------------------------
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+
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+https://github.com/lemire/FrameOfReference/blob/146948b6058a976bc7767262ad3a2ce201486b93/scripts/turbopacking64.py
+
+Copyright: 2013 Daniel Lemire
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+
+https://github.com/numpy/numpy/blob/68fd82271b9ea5a9e50d4e761061dfcca851382a/numpy/core/src/multiarray/datetime.c
+
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+Unless required by applicable law or agreed to in writing, software
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+ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+--------------------------------------------------------------------------------
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+--------------------------------------------------------------------------------
+
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+
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+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+--------------------------------------------------------------------------------
+
+The script ci/scripts/util_wait_for_it.sh has the following license
+
+Copyright (c) 2016 Giles Hall
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
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+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+--------------------------------------------------------------------------------
+
+The script r/configure has the following license (MIT)
+
+Copyright (c) 2017, Jeroen Ooms and Jim Hester
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
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+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
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+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+--------------------------------------------------------------------------------
+
+cpp/src/arrow/util/logging.cc, cpp/src/arrow/util/logging.h and
+cpp/src/arrow/util/logging-test.cc are adapted from
+Ray Project (https://github.com/ray-project/ray) (Apache 2.0).
+
+Copyright (c) 2016 Ray Project (https://github.com/ray-project/ray)
+
+Licensed under the Apache License, Version 2.0 (the "License");
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+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+
+--------------------------------------------------------------------------------
+The files cpp/src/arrow/vendored/datetime/date.h, cpp/src/arrow/vendored/datetime/tz.h,
+cpp/src/arrow/vendored/datetime/tz_private.h, cpp/src/arrow/vendored/datetime/ios.h,
+cpp/src/arrow/vendored/datetime/ios.mm,
+cpp/src/arrow/vendored/datetime/tz.cpp are adapted from
+Howard Hinnant's date library (https://github.com/HowardHinnant/date)
+It is licensed under MIT license.
+
+The MIT License (MIT)
+Copyright (c) 2015, 2016, 2017 Howard Hinnant
+Copyright (c) 2016 Adrian Colomitchi
+Copyright (c) 2017 Florian Dang
+Copyright (c) 2017 Paul Thompson
+Copyright (c) 2018 Tomasz Kamiński
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
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+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+--------------------------------------------------------------------------------
+
+The file cpp/src/arrow/util/utf8.h includes code adapted from the page
+  https://bjoern.hoehrmann.de/utf-8/decoder/dfa/
+with the following license (MIT)
+
+Copyright (c) 2008-2009 Bjoern Hoehrmann <bjoern@hoehrmann.de>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
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+copies of the Software, and to permit persons to whom the Software is
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+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+--------------------------------------------------------------------------------
+
+The files in cpp/src/arrow/vendored/xxhash/ have the following license
+(BSD 2-Clause License)
+
+xxHash Library
+Copyright (c) 2012-2014, Yann Collet
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without modification,
+are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
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+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+You can contact the author at :
+- xxHash homepage: http://www.xxhash.com
+- xxHash source repository : https://github.com/Cyan4973/xxHash
+
+--------------------------------------------------------------------------------
+
+The files in cpp/src/arrow/vendored/double-conversion/ have the following license
+(BSD 3-Clause License)
+
+Copyright 2006-2011, the V8 project authors. All rights reserved.
+Redistribution and use in source and binary forms, with or without
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+met:
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+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
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+    * Neither the name of Google Inc. nor the names of its
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+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+--------------------------------------------------------------------------------
+
+The files in cpp/src/arrow/vendored/uriparser/ have the following license
+(BSD 3-Clause License)
+
+uriparser - RFC 3986 URI parsing library
+
+Copyright (C) 2007, Weijia Song <songweijia@gmail.com>
+Copyright (C) 2007, Sebastian Pipping <sebastian@pipping.org>
+All rights reserved.
+
+Redistribution  and use in source and binary forms, with or without
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+are met:
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+    * Redistributions   of  source  code  must  retain  the   above
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+
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+STRICT  LIABILITY,  OR  TORT (INCLUDING  NEGLIGENCE  OR  OTHERWISE)
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+
+--------------------------------------------------------------------------------
+
+The files under dev/tasks/conda-recipes have the following license
+
+BSD 3-clause license
+Copyright (c) 2015-2018, conda-forge
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+Redistribution and use in source and binary forms, with or without modification,
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+2. Redistributions in binary form must reproduce the above copyright notice,
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+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
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+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR
+TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+--------------------------------------------------------------------------------
+
+The files in cpp/src/arrow/vendored/utfcpp/ have the following license
+
+Copyright 2006-2018 Nemanja Trifunovic
+
+Permission is hereby granted, free of charge, to any person or organization
+obtaining a copy of the software and accompanying documentation covered by
+this license (the "Software") to use, reproduce, display, distribute,
+execute, and transmit the Software, and to prepare derivative works of the
+Software, and to permit third-parties to whom the Software is furnished to
+do so, all subject to the following:
+
+The copyright notices in the Software and this entire statement, including
+the above license grant, this restriction and the following disclaimer,
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+all derivative works of the Software, unless such copies or derivative
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+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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+ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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+
+--------------------------------------------------------------------------------
+
+This project includes code from Apache Kudu.
+
+ * cpp/cmake_modules/CompilerInfo.cmake is based on Kudu's cmake_modules/CompilerInfo.cmake
+
+Copyright: 2016 The Apache Software Foundation.
+Home page: https://kudu.apache.org/
+License: http://www.apache.org/licenses/LICENSE-2.0
+
+--------------------------------------------------------------------------------
+
+This project includes code from Apache Impala (incubating), formerly
+Impala. The Impala code and rights were donated to the ASF as part of the
+Incubator process after the initial code imports into Apache Parquet.
+
+Copyright: 2012 Cloudera, Inc.
+Copyright: 2016 The Apache Software Foundation.
+Home page: http://impala.apache.org/
+License: http://www.apache.org/licenses/LICENSE-2.0
+
+--------------------------------------------------------------------------------
+
+This project includes code from Apache Aurora.
+
+* dev/release/{release,changelog,release-candidate} are based on the scripts from
+  Apache Aurora
+
+Copyright: 2016 The Apache Software Foundation.
+Home page: https://aurora.apache.org/
+License: http://www.apache.org/licenses/LICENSE-2.0
+
+--------------------------------------------------------------------------------
+
+This project includes code from the Google styleguide.
+
+* cpp/build-support/cpplint.py is based on the scripts from the Google styleguide.
+
+Copyright: 2009 Google Inc. All rights reserved.
+Homepage: https://github.com/google/styleguide
+License: 3-clause BSD
+
+--------------------------------------------------------------------------------
+
+This project includes code from Snappy.
+
+* cpp/cmake_modules/{SnappyCMakeLists.txt,SnappyConfig.h} are based on code
+  from Google's Snappy project.
+
+Copyright: 2009 Google Inc. All rights reserved.
+Homepage: https://github.com/google/snappy
+License: 3-clause BSD
+
+--------------------------------------------------------------------------------
+
+This project includes code from the manylinux project.
+
+* python/manylinux1/scripts/{build_python.sh,python-tag-abi-tag.py,
+  requirements.txt} are based on code from the manylinux project.
+
+Copyright: 2016 manylinux
+Homepage: https://github.com/pypa/manylinux
+License: The MIT License (MIT)
+
+--------------------------------------------------------------------------------
+
+This project includes code from the cymove project:
+
+* python/pyarrow/includes/common.pxd includes code from the cymove project
+
+The MIT License (MIT)
+Copyright (c) 2019 Omer Ozarslan
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
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+
+--------------------------------------------------------------------------------
+
+The projects includes code from the Ursabot project under the dev/archery
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+* cpp/src/arrow/util/cpu-info.cc has a polyfill for mingw-w64 < 5
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+Copyright (c) 2009 - 2013 by the mingw-w64 project
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+Copyright (c)  Copyright 2017 Asylo authors
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+--------------------------------------------------------------------------------
+
+This project includes code from Google's protobuf project
+
+* cpp/src/arrow/result.h ARROW_ASSIGN_OR_RAISE is based off ASSIGN_OR_RETURN
+* cpp/src/arrow/util/bit_stream_utils.h contains code from wire_format_lite.h
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+    ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+    DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+    SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+    CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+    LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+    OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH
+    DAMAGE.
+
+    Terms of the MIT License:
+    --------------------------------------------------------------------
+
+    Permission is hereby granted, free of charge, to any person obtaining a
+    copy of this software and associated documentation files (the "Software"),
+    to deal in the Software without restriction, including without limitation
+    the rights to use, copy, modify, merge, publish, distribute, sublicense,
+    and/or sell copies of the Software, and to permit persons to whom the
+    Software is furnished to do so, subject to the following conditions:
+
+    The above copyright notice and this permission notice shall be included
+    in all copies or substantial portions of the Software.
+
+    THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
+    FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
+    DEALINGS IN THE SOFTWARE.
+
+--------------------------------------------------------------------------------
+
+3rdparty dependency snappy is statically linked in certain binary
+distributions, like the python wheels. snappy has the following license:
+
+Copyright 2011, Google Inc.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright notice,
+      this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above copyright notice,
+      this list of conditions and the following disclaimer in the documentation
+      and/or other materials provided with the distribution.
+    * Neither the name of Google Inc. nor the names of its contributors may be
+      used to endorse or promote products derived from this software without
+      specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+===
+
+Some of the benchmark data in testdata/ is licensed differently:
+
+ - fireworks.jpeg is Copyright 2013 Steinar H. Gunderson, and
+   is licensed under the Creative Commons Attribution 3.0 license
+   (CC-BY-3.0). See https://creativecommons.org/licenses/by/3.0/
+   for more information.
+
+ - kppkn.gtb is taken from the Gaviota chess tablebase set, and
+   is licensed under the MIT License. See
+   https://sites.google.com/site/gaviotachessengine/Home/endgame-tablebases-1
+   for more information.
+
+ - paper-100k.pdf is an excerpt (bytes 92160 to 194560) from the paper
+   “Combinatorial Modeling of Chromatin Features Quantitatively Predicts DNA
+   Replication Timing in _Drosophila_” by Federico Comoglio and Renato Paro,
+   which is licensed under the CC-BY license. See
+   http://www.ploscompbiol.org/static/license for more ifnormation.
+
+ - alice29.txt, asyoulik.txt, plrabn12.txt and lcet10.txt are from Project
+   Gutenberg. The first three have expired copyrights and are in the public
+   domain; the latter does not have expired copyright, but is still in the
+   public domain according to the license information
+   (http://www.gutenberg.org/ebooks/53).
+
+--------------------------------------------------------------------------------
+
+3rdparty dependency gflags is statically linked in certain binary
+distributions, like the python wheels. gflags has the following license:
+
+Copyright (c) 2006, Google Inc.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+    * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+--------------------------------------------------------------------------------
+
+3rdparty dependency glog is statically linked in certain binary
+distributions, like the python wheels. glog has the following license:
+
+Copyright (c) 2008, Google Inc.
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+copyright notice, this list of conditions and the following disclaimer
+in the documentation and/or other materials provided with the
+distribution.
+    * Neither the name of Google Inc. nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+
+A function gettimeofday in utilities.cc is based on
+
+http://www.google.com/codesearch/p?hl=en#dR3YEbitojA/COPYING&q=GetSystemTimeAsFileTime%20license:bsd
+
+The license of this code is:
+
+Copyright (c) 2003-2008, Jouni Malinen <j@w1.fi> and contributors
+All Rights Reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+1. Redistributions of source code must retain the above copyright
+   notice, this list of conditions and the following disclaimer.
+
+2. Redistributions in binary form must reproduce the above copyright
+   notice, this list of conditions and the following disclaimer in the
+   documentation and/or other materials provided with the distribution.
+
+3. Neither the name(s) of the above-listed copyright holder(s) nor the
+   names of its contributors may be used to endorse or promote products
+   derived from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+--------------------------------------------------------------------------------
+
+3rdparty dependency re2 is statically linked in certain binary
+distributions, like the python wheels. re2 has the following license:
+
+Copyright (c) 2009 The RE2 Authors. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+      notice, this list of conditions and the following disclaimer.
+    * Redistributions in binary form must reproduce the above
+      copyright notice, this list of conditions and the following
+      disclaimer in the documentation and/or other materials provided
+      with the distribution.
+    * Neither the name of Google Inc. nor the names of its contributors
+      may be used to endorse or promote products derived from this
+      software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+--------------------------------------------------------------------------------
+
+3rdparty dependency c-ares is statically linked in certain binary
+distributions, like the python wheels. c-ares has the following license:
+
+# c-ares license
+
+Copyright (c) 2007 - 2018, Daniel Stenberg with many contributors, see AUTHORS
+file.
+
+Copyright 1998 by the Massachusetts Institute of Technology.
+
+Permission to use, copy, modify, and distribute this software and its
+documentation for any purpose and without fee is hereby granted, provided that
+the above copyright notice appear in all copies and that both that copyright
+notice and this permission notice appear in supporting documentation, and that
+the name of M.I.T. not be used in advertising or publicity pertaining to
+distribution of the software without specific, written prior permission.
+M.I.T. makes no representations about the suitability of this software for any
+purpose.  It is provided "as is" without express or implied warranty.
+
+--------------------------------------------------------------------------------
+
+3rdparty dependency zlib is redistributed as a dynamically linked shared
+library in certain binary distributions, like the python wheels. In the future
+this will likely change to static linkage. zlib has the following license:
+
+zlib.h -- interface of the 'zlib' general purpose compression library
+  version 1.2.11, January 15th, 2017
+
+  Copyright (C) 1995-2017 Jean-loup Gailly and Mark Adler
+
+  This software is provided 'as-is', without any express or implied
+  warranty.  In no event will the authors be held liable for any damages
+  arising from the use of this software.
+
+  Permission is granted to anyone to use this software for any purpose,
+  including commercial applications, and to alter it and redistribute it
+  freely, subject to the following restrictions:
+
+  1. The origin of this software must not be misrepresented; you must not
+     claim that you wrote the original software. If you use this software
+     in a product, an acknowledgment in the product documentation would be
+     appreciated but is not required.
+  2. Altered source versions must be plainly marked as such, and must not be
+     misrepresented as being the original software.
+  3. This notice may not be removed or altered from any source distribution.
+
+  Jean-loup Gailly        Mark Adler
+  jloup@gzip.org          madler@alumni.caltech.edu
+
+--------------------------------------------------------------------------------
+
+3rdparty dependency openssl is redistributed as a dynamically linked shared
+library in certain binary distributions, like the python wheels. openssl
+preceding version 3 has the following license:
+
+  LICENSE ISSUES
+  ==============
+
+  The OpenSSL toolkit stays under a double license, i.e. both the conditions of
+  the OpenSSL License and the original SSLeay license apply to the toolkit.
+  See below for the actual license texts.
+
+  OpenSSL License
+  ---------------
+
+/* ====================================================================
+ * Copyright (c) 1998-2019 The OpenSSL Project.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. All advertising materials mentioning features or use of this
+ *    software must display the following acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
+ *
+ * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission. For written permission, please contact
+ *    openssl-core@openssl.org.
+ *
+ * 5. Products derived from this software may not be called "OpenSSL"
+ *    nor may "OpenSSL" appear in their names without prior written
+ *    permission of the OpenSSL Project.
+ *
+ * 6. Redistributions of any form whatsoever must retain the following
+ *    acknowledgment:
+ *    "This product includes software developed by the OpenSSL Project
+ *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
+ * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
+ * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+ * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
+ * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
+ * OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ====================================================================
+ *
+ * This product includes cryptographic software written by Eric Young
+ * (eay@cryptsoft.com).  This product includes software written by Tim
+ * Hudson (tjh@cryptsoft.com).
+ *
+ */
+
+ Original SSLeay License
+ -----------------------
+
+/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
+ * All rights reserved.
+ *
+ * This package is an SSL implementation written
+ * by Eric Young (eay@cryptsoft.com).
+ * The implementation was written so as to conform with Netscapes SSL.
+ *
+ * This library is free for commercial and non-commercial use as long as
+ * the following conditions are aheared to.  The following conditions
+ * apply to all code found in this distribution, be it the RC4, RSA,
+ * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
+ * included with this distribution is covered by the same copyright terms
+ * except that the holder is Tim Hudson (tjh@cryptsoft.com).
+ *
+ * Copyright remains Eric Young's, and as such any Copyright notices in
+ * the code are not to be removed.
+ * If this package is used in a product, Eric Young should be given attribution
+ * as the author of the parts of the library used.
+ * This can be in the form of a textual message at program startup or
+ * in documentation (online or textual) provided with the package.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. All advertising materials mentioning features or use of this software
+ *    must display the following acknowledgement:
+ *    "This product includes cryptographic software written by
+ *     Eric Young (eay@cryptsoft.com)"
+ *    The word 'cryptographic' can be left out if the rouines from the library
+ *    being used are not cryptographic related :-).
+ * 4. If you include any Windows specific code (or a derivative thereof) from
+ *    the apps directory (application code) you must include an acknowledgement:
+ *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
+ *
+ * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * The licence and distribution terms for any publically available version or
+ * derivative of this code cannot be changed.  i.e. this code cannot simply be
+ * copied and put under another distribution licence
+ * [including the GNU Public Licence.]
+ */
+
+--------------------------------------------------------------------------------
+
+This project includes code from the rtools-backports project.
+
+* ci/scripts/PKGBUILD and ci/scripts/r_windows_build.sh are based on code
+  from the rtools-backports project.
+
+Copyright: Copyright (c) 2013 - 2019, Алексей and Jeroen Ooms.
+All rights reserved.
+Homepage: https://github.com/r-windows/rtools-backports
+License: 3-clause BSD
+
+--------------------------------------------------------------------------------
+
+Some code from pandas has been adapted for the pyarrow codebase. pandas is
+available under the 3-clause BSD license, which follows:
+
+pandas license
+==============
+
+Copyright (c) 2011-2012, Lambda Foundry, Inc. and PyData Development Team
+All rights reserved.
+
+Copyright (c) 2008-2011 AQR Capital Management, LLC
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are
+met:
+
+    * Redistributions of source code must retain the above copyright
+       notice, this list of conditions and the following disclaimer.
+
+    * Redistributions in binary form must reproduce the above
+       copyright notice, this list of conditions and the following
+       disclaimer in the documentation and/or other materials provided
+       with the distribution.
+
+    * Neither the name of the copyright holder nor the names of any
+       contributors may be used to endorse or promote products derived
+       from this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDER AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+--------------------------------------------------------------------------------
+
+Some bits from DyND, in particular aspects of the build system, have been
+adapted from libdynd and dynd-python under the terms of the BSD 2-clause
+license
+
+The BSD 2-Clause License
+
+    Copyright (C) 2011-12, Dynamic NDArray Developers
+    All rights reserved.
+
+    Redistribution and use in source and binary forms, with or without
+    modification, are permitted provided that the following conditions are
+    met:
+
+        * Redistributions of source code must retain the above copyright
+           notice, this list of conditions and the following disclaimer.
+
+        * Redistributions in binary form must reproduce the above
+           copyright notice, this list of conditions and the following
+           disclaimer in the documentation and/or other materials provided
+           with the distribution.
+
+    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+    "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+    LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+    A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+    OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+    SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+    LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+    DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+    THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+    (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+    OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+Dynamic NDArray Developers list:
+
+ * Mark Wiebe
+ * Continuum Analytics
+
+--------------------------------------------------------------------------------
+
+Some source code from Ibis (https://github.com/cloudera/ibis) has been adapted
+for PyArrow. Ibis is released under the Apache License, Version 2.0.
+
+--------------------------------------------------------------------------------
+
+This project includes code from the autobrew project.
+
+The following files are based on code from the autobrew project:
+* r/tools/autobrew
+* dev/tasks/homebrew-formulae/autobrew/apache-arrow.rb
+* dev/tasks/homebrew-formulae/autobrew/apache-arrow-static.rb 
+
+Copyright (c) 2019, Jeroen Ooms
+License: MIT
+Homepage: https://github.com/autobrew/
+
+--------------------------------------------------------------------------------
+
+dev/tasks/homebrew-formulae/apache-arrow.rb has the following license:
+
+BSD 2-Clause License
+
+Copyright (c) 2009-present, Homebrew contributors
+All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions are met:
+
+* Redistributions of source code must retain the above copyright notice, this
+  list of conditions and the following disclaimer.
+
+* Redistributions in binary form must reproduce the above copyright notice,
+  this list of conditions and the following disclaimer in the documentation
+  and/or other materials provided with the distribution.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+----------------------------------------------------------------------
+
+cpp/src/arrow/vendored/base64.cpp has the following license
+
+ZLIB License
+
+Copyright (C) 2004-2017 René Nyffenegger
+
+This source code is provided 'as-is', without any express or implied
+warranty. In no event will the author be held liable for any damages arising
+from the use of this software.
+
+Permission is granted to anyone to use this software for any purpose, including
+commercial applications, and to alter it and redistribute it freely, subject to
+the following restrictions:
+
+1. The origin of this source code must not be misrepresented; you must not
+   claim that you wrote the original source code. If you use this source code
+   in a product, an acknowledgment in the product documentation would be
+   appreciated but is not required.
+
+2. Altered source versions must be plainly marked as such, and must not be
+   misrepresented as being the original source code.
+
+3. This notice may not be removed or altered from any source distribution.
+
+René Nyffenegger rene.nyffenegger@adp-gmbh.ch
+
+--------------------------------------------------------------------------------
+
+This project includes code from Folly.
+
+ * cpp/src/arrow/vendored/ProducerConsumerQueue.h
+
+is based on Folly's
+
+ * folly/Portability.h
+ * folly/lang/Align.h
+ * folly/ProducerConsumerQueue.h
+
+Copyright: Copyright (c) Facebook, Inc. and its affiliates.
+Home page: https://github.com/facebook/folly
+License: http://www.apache.org/licenses/LICENSE-2.0
+
+--------------------------------------------------------------------------------
+
+The file cpp/src/arrow/vendored/musl/strptime.c has the following license
+
+Copyright © 2005-2020 Rich Felker, et al.
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+--------------------------------------------------------------------------------
+
+The file cpp/cmake_modules/BuildUtils.cmake contains code from
+
+https://gist.github.com/cristianadam/ef920342939a89fae3e8a85ca9459b49
+
+which is made available under the MIT license
+
+Copyright (c) 2019 Cristian Adam
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+--------------------------------------------------------------------------------
+
+The files in cpp/src/arrow/vendored/portable-snippets/ contain code from
+
+https://github.com/nemequ/portable-snippets
+
+and have the following copyright notice:
+
+Each source file contains a preamble explaining the license situation
+for that file, which takes priority over this file.  With the
+exception of some code pulled in from other repositories (such as
+µnit, an MIT-licensed project which is used for testing), the code is
+public domain, released using the CC0 1.0 Universal dedication (*).
+
+(*) https://creativecommons.org/publicdomain/zero/1.0/legalcode
+
+--------------------------------------------------------------------------------
+
+The files in cpp/src/arrow/vendored/fast_float/ contain code from
+
+https://github.com/lemire/fast_float
+
+which is made available under the Apache License 2.0.
+
+--------------------------------------------------------------------------------
+
+The file python/pyarrow/vendored/docscrape.py contains code from
+
+https://github.com/numpy/numpydoc/
+
+which is made available under the BSD 2-clause license.
+
+--------------------------------------------------------------------------------
+
+The file python/pyarrow/vendored/version.py contains code from
+
+https://github.com/pypa/packaging/
+
+which is made available under both the Apache license v2.0 and the
+BSD 2-clause license.
+
+--------------------------------------------------------------------------------
+
+The files in cpp/src/arrow/vendored/pcg contain code from
+
+https://github.com/imneme/pcg-cpp
+
+and have the following copyright notice:
+
+Copyright 2014-2019 Melissa O'Neill <oneill@pcg-random.org>,
+                    and the PCG Project contributors.
+
+SPDX-License-Identifier: (Apache-2.0 OR MIT)
+
+Licensed under the Apache License, Version 2.0 (provided in
+LICENSE-APACHE.txt and at http://www.apache.org/licenses/LICENSE-2.0)
+or under the MIT license (provided in LICENSE-MIT.txt and at
+http://opensource.org/licenses/MIT), at your option. This file may not
+be copied, modified, or distributed except according to those terms.
+
+Distributed on an "AS IS" BASIS, WITHOUT WARRANTY OF ANY KIND, either
+express or implied.  See your chosen license for details.
+
+--------------------------------------------------------------------------------
+r/R/dplyr-count-tally.R (some portions)
+
+Some portions of this file are derived from code from
+
+https://github.com/tidyverse/dplyr/
+
+which is made available under the MIT license
+
+Copyright (c) 2013-2019 RStudio and others.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the “Software”), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED “AS IS”, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+--------------------------------------------------------------------------------
+
+The file src/arrow/util/io_util.cc contains code from the CPython project
+which is made available under the Python Software Foundation License Version 2.
+
+--------------------------------------------------------------------------------
+
+3rdparty dependency opentelemetry-cpp is statically linked in certain binary
+distributions. opentelemetry-cpp is made available under the Apache License 2.0.
+
+Copyright The OpenTelemetry Authors
+SPDX-License-Identifier: Apache-2.0
+
+--------------------------------------------------------------------------------
+
+ci/conan/ is based on code from Conan Package and Dependency Manager.
+
+Copyright (c) 2019 Conan.io
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+--------------------------------------------------------------------------------
+
+3rdparty dependency UCX is redistributed as a dynamically linked shared
+library in certain binary distributions. UCX has the following license:
+
+Copyright (c) 2014-2015      UT-Battelle, LLC. All rights reserved.
+Copyright (C) 2014-2020      Mellanox Technologies Ltd. All rights reserved.
+Copyright (C) 2014-2015      The University of Houston System. All rights reserved.
+Copyright (C) 2015           The University of Tennessee and The University
+                             of Tennessee Research Foundation. All rights reserved.
+Copyright (C) 2016-2020      ARM Ltd. All rights reserved.
+Copyright (c) 2016           Los Alamos National Security, LLC. All rights reserved.
+Copyright (C) 2016-2020      Advanced Micro Devices, Inc.  All rights reserved.
+Copyright (C) 2019           UChicago Argonne, LLC.  All rights reserved.
+Copyright (c) 2018-2020      NVIDIA CORPORATION. All rights reserved.
+Copyright (C) 2020           Huawei Technologies Co., Ltd. All rights reserved.
+Copyright (C) 2016-2020      Stony Brook University. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted provided that the following conditions
+are met:
+
+1. Redistributions of source code must retain the above copyright
+notice, this list of conditions and the following disclaimer.
+2. Redistributions in binary form must reproduce the above copyright
+notice, this list of conditions and the following disclaimer in the
+documentation and/or other materials provided with the distribution.
+3. Neither the name of the copyright holder nor the names of its
+contributors may be used to endorse or promote products derived from
+this software without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
+TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+--------------------------------------------------------------------------------
+
+The file dev/tasks/r/github.packages.yml contains code from
+
+https://github.com/ursa-labs/arrow-r-nightly
+
+which is made available under the Apache License 2.0.
+
+--------------------------------------------------------------------------------
+.github/actions/sync-nightlies/action.yml  (some portions)
+
+Some portions of this file are derived from code from
+
+https://github.com/JoshPiper/rsync-docker
+
+which is made available under the MIT license
+
+Copyright (c) 2020 Joshua Piper
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+--------------------------------------------------------------------------------
+.github/actions/sync-nightlies/action.yml (some portions)
+
+Some portions of this file are derived from code from
+
+https://github.com/burnett01/rsync-deployments
+
+which is made available under the MIT license
+
+Copyright (c) 2019-2022 Contention
+Copyright (c) 2019-2022 Burnett01
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/igv_component/node_modules/apache-arrow/NOTICE.txt b/igv_component/node_modules/apache-arrow/NOTICE.txt
new file mode 100644
index 0000000000000000000000000000000000000000..a609791374c287718bcdefd550d17e6a3f07c25f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/NOTICE.txt
@@ -0,0 +1,84 @@
+Apache Arrow
+Copyright 2016-2019 The Apache Software Foundation
+
+This product includes software developed at
+The Apache Software Foundation (http://www.apache.org/).
+
+This product includes software from the SFrame project (BSD, 3-clause).
+* Copyright (C) 2015 Dato, Inc.
+* Copyright (c) 2009 Carnegie Mellon University.
+
+This product includes software from the Feather project (Apache 2.0)
+https://github.com/wesm/feather
+
+This product includes software from the DyND project (BSD 2-clause)
+https://github.com/libdynd
+
+This product includes software from the LLVM project
+ * distributed under the University of Illinois Open Source
+
+This product includes software from the google-lint project
+ * Copyright (c) 2009 Google Inc. All rights reserved.
+
+This product includes software from the mman-win32 project
+ * Copyright https://code.google.com/p/mman-win32/
+ * Licensed under the MIT License;
+
+This product includes software from the LevelDB project
+ * Copyright (c) 2011 The LevelDB Authors. All rights reserved.
+ * Use of this source code is governed by a BSD-style license that can be
+ * Moved from Kudu http://github.com/cloudera/kudu
+
+This product includes software from the CMake project
+ * Copyright 2001-2009 Kitware, Inc.
+ * Copyright 2012-2014 Continuum Analytics, Inc.
+ * All rights reserved.
+
+This product includes software from https://github.com/matthew-brett/multibuild (BSD 2-clause)
+ * Copyright (c) 2013-2016, Matt Terry and Matthew Brett; all rights reserved.
+
+This product includes software from the Ibis project (Apache 2.0)
+ * Copyright (c) 2015 Cloudera, Inc.
+ * https://github.com/cloudera/ibis
+
+This product includes software from Dremio (Apache 2.0)
+  * Copyright (C) 2017-2018 Dremio Corporation
+  * https://github.com/dremio/dremio-oss
+
+This product includes software from Google Guava (Apache 2.0)
+  * Copyright (C) 2007 The Guava Authors
+  * https://github.com/google/guava
+
+This product include software from CMake (BSD 3-Clause)
+  * CMake - Cross Platform Makefile Generator
+  * Copyright 2000-2019 Kitware, Inc. and Contributors
+
+The web site includes files generated by Jekyll.
+
+--------------------------------------------------------------------------------
+
+This product includes code from Apache Kudu, which includes the following in
+its NOTICE file:
+
+  Apache Kudu
+  Copyright 2016 The Apache Software Foundation
+
+  This product includes software developed at
+  The Apache Software Foundation (http://www.apache.org/).
+
+  Portions of this software were developed at
+  Cloudera, Inc (http://www.cloudera.com/).
+
+--------------------------------------------------------------------------------
+
+This product includes code from Apache ORC, which includes the following in
+its NOTICE file:
+
+  Apache ORC
+  Copyright 2013-2019 The Apache Software Foundation
+
+  This product includes software developed by The Apache Software
+  Foundation (http://www.apache.org/).
+
+  This product includes software developed by Hewlett-Packard:
+  (c) Copyright [2014-2015] Hewlett-Packard Development Company, L.P
diff --git a/igv_component/node_modules/apache-arrow/README.md b/igv_component/node_modules/apache-arrow/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..ae52535a22abce2b66829e09361057ab607f6cfb
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/README.md
@@ -0,0 +1,256 @@
+<!---
+  Licensed to the Apache Software Foundation (ASF) under one
+  or more contributor license agreements.  See the NOTICE file
+  distributed with this work for additional information
+  regarding copyright ownership.  The ASF licenses this file
+  to you under the Apache License, Version 2.0 (the
+  "License"); you may not use this file except in compliance
+  with the License.  You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing,
+  software distributed under the License is distributed on an
+  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+  KIND, either express or implied.  See the License for the
+  specific language governing permissions and limitations
+  under the License.
+-->
+
+# [Apache Arrow](https://github.com/apache/arrow) in JS
+
+[![npm version](https://img.shields.io/npm/v/apache-arrow.svg)](https://www.npmjs.com/package/apache-arrow)
+
+Arrow is a set of technologies that enable big data systems to process and transfer data quickly.
+
+## Install `apache-arrow` from NPM
+
+`npm install apache-arrow` or `yarn add apache-arrow`
+
+(read about how we [package apache-arrow](#packaging) below)
+
+# Powering Columnar In-Memory Analytics
+
+[Apache Arrow](https://github.com/apache/arrow) is a columnar memory layout specification for encoding vectors and table-like containers of flat and nested data. The Arrow spec aligns columnar data in memory to minimize cache misses and take advantage of the latest SIMD (Single input multiple data) and GPU operations on modern processors.
+
+Apache Arrow is the emerging standard for large in-memory columnar data ([Spark](https://spark.apache.org/), [Pandas](https://wesmckinney.com/blog/pandas-and-apache-arrow/), [Drill](https://drill.apache.org/), [Graphistry](https://www.graphistry.com), ...). By standardizing on a common binary interchange format, big data systems can reduce the costs and friction associated with cross-system communication.
+
+# Get Started
+
+Check out our [API documentation][5] to learn more about how to use Apache Arrow's JS implementation. You can also learn by example by checking out some of the following resources:
+
+* [/js/test/unit](https://github.com/apache/arrow/tree/master/js/test/unit) - Unit tests for Table and Vector
+
+## Cookbook
+
+### Get a table from an Arrow file on disk (in IPC format)
+
+```js
+import { readFileSync } from 'fs';
+import { tableFromIPC } from 'apache-arrow';
+
+const arrow = readFileSync('simple.arrow');
+const table = tableFromIPC(arrow);
+
+console.table(table.toArray());
+
+/*
+ foo,  bar,  baz
+   1,    1,   aa
+null, null, null
+   3, null, null
+   4,    4,  bbb
+   5,    5, cccc
+*/
+```
+
+### Create a Table when the Arrow file is split across buffers
+
+```js
+import { readFileSync } from 'fs';
+import { tableFromIPC } from 'apache-arrow';
+
+const table = tableFromIPC([
+    'latlong/schema.arrow',
+    'latlong/records.arrow'
+].map((file) => readFileSync(file)));
+
+console.table([...table]);
+
+/*
+        origin_lat,         origin_lon
+35.393089294433594,  -97.6007308959961
+35.393089294433594,  -97.6007308959961
+35.393089294433594,  -97.6007308959961
+29.533695220947266, -98.46977996826172
+29.533695220947266, -98.46977996826172
+*/
+```
+
+### Create a Table from JavaScript arrays
+
+```js
+import { tableFromArrays } from 'apache-arrow';
+
+const LENGTH = 2000;
+
+const rainAmounts = Float32Array.from(
+    { length: LENGTH },
+    () => Number((Math.random() * 20).toFixed(1)));
+
+const rainDates = Array.from(
+    { length: LENGTH },
+    (_, i) => new Date(Date.now() - 1000 * 60 * 60 * 24 * i));
+
+const rainfall = tableFromArrays({
+    precipitation: rainAmounts,
+    date: rainDates
+});
+
+console.table([...rainfall]);
+```
+
+### Load data with `fetch`
+
+```js
+import { tableFromIPC } from "apache-arrow";
+
+const table = await tableFromIPC(fetch("/simple.arrow"));
+
+console.table([...table]);
+```
+
+### Vectors look like JS Arrays
+
+You can create vector from JavaScript typed arrays with `makeVector` and from JavaScript arrays with `vectorFromArray`. `makeVector` is a lot faster and does not require a copy.
+
+```js
+import { makeVector } from "apache-arrow";
+
+const LENGTH = 2000;
+
+const rainAmounts = Float32Array.from(
+    { length: LENGTH },
+    () => Number((Math.random() * 20).toFixed(1)));
+
+const vector = makeVector(rainAmounts);
+
+const typed = vector.toArray()
+
+assert(typed instanceof Float32Array);
+
+for (let i = -1, n = vector.length; ++i < n;) {
+    assert(vector.get(i) === typed[i]);
+}
+```
+
+### String vectors
+
+Strings can be encoded as UTF-8 or dictionary encoded UTF-8. Dictionary encoding encodes repeated values more efficiently. You can create a dictionary encoded string conveniently with `vectorFromArray` or efficiently with `makeVector`.
+
+```js
+import { makeVector, vectorFromArray, Dictionary, Uint8, Utf8 } from "apache-arrow";
+
+const uft8Vector = vectorFromArray(['foo', 'bar', 'baz'], new Utf8);
+
+const dictionaryVector1 = vectorFromArray(
+    ['foo', 'bar', 'baz', 'foo', 'bar']
+);
+
+const dictionaryVector2 = makeVector({
+    data: [0, 1, 2, 0, 1],  // indexes into the dictionary
+    dictionary: uft8Vector,
+    type: new Dictionary(new Utf8, new Uint8)
+});
+```
+
+# Getting involved
+
+See [DEVELOP.md](DEVELOP.md)
+
+Even if you do not plan to contribute to Apache Arrow itself or Arrow
+integrations in other projects, we'd be happy to have you involved:
+
+* Join the mailing list: send an email to
+  [dev-subscribe@arrow.apache.org][1]. Share your ideas and use cases for the
+  project
+* Follow our activity on [GitHub issues][3]
+* [Learn the format][2]
+* Contribute code to one of the reference implementations
+
+We prefer to receive contributions in the form of GitHub pull requests.
+Please send pull requests against the [github.com/apache/arrow][4] repository.
+
+If you are looking for some ideas on what to contribute, check out the [GitHub
+issues][3] for the Apache Arrow project. Comment on the issue and/or contact
+[dev@arrow.apache.org](https://mail-archives.apache.org/mod_mbox/arrow-dev/)
+with your questions and ideas.
+
+If you’d like to report a bug but don’t have time to fix it, you can still post
+it on GitHub issues, or email the mailing list
+[dev@arrow.apache.org](https://mail-archives.apache.org/mod_mbox/arrow-dev/)
+
+## Packaging
+
+`apache-arrow` is written in TypeScript, but the project is compiled to multiple JS versions and common module formats.
+
+The base `apache-arrow` package includes all the compilation targets for convenience, but if you're conscientious about your `node_modules` footprint, we got you.
+
+The targets are also published under the `@apache-arrow` namespace:
+
+```sh
+npm install apache-arrow # <-- combined es2015/CommonJS/ESModules/UMD + esnext/UMD
+npm install @apache-arrow/ts # standalone TypeScript package
+npm install @apache-arrow/es5-cjs # standalone es5/CommonJS package
+npm install @apache-arrow/es5-esm # standalone es5/ESModules package
+npm install @apache-arrow/es5-umd # standalone es5/UMD package
+npm install @apache-arrow/es2015-cjs # standalone es2015/CommonJS package
+npm install @apache-arrow/es2015-esm # standalone es2015/ESModules package
+npm install @apache-arrow/es2015-umd # standalone es2015/UMD package
+npm install @apache-arrow/esnext-cjs # standalone esNext/CommonJS package
+npm install @apache-arrow/esnext-esm # standalone esNext/ESModules package
+npm install @apache-arrow/esnext-umd # standalone esNext/UMD package
+```
+
+### Why we package like this
+
+The JS community is a diverse group with a varied list of target environments and tool chains. Publishing multiple packages accommodates projects of all stripes.
+
+If you think we missed a compilation target and it's a blocker for adoption, please open an issue.
+
+### Supported Browsers and Platforms
+
+The bundles we compile support moderns browser released in the last 5 years. This includes supported versions of
+Firefox, Chrome, Edge, and Safari. We do not actively support Internet Explorer.
+Apache Arrow also works on [maintained versions of Node](https://nodejs.org/en/about/releases/).
+
+# People
+
+Full list of broader Apache Arrow [committers](https://arrow.apache.org/committers/).
+
+* Brian Hulette, _committer_
+* Paul Taylor, _committer_
+* Dominik Moritz, _committer_
+
+# Powered By Apache Arrow in JS
+
+Full list of broader Apache Arrow [projects & organizations](https://arrow.apache.org/powered_by/).
+
+## Open Source Projects
+
+* [Apache Arrow](https://arrow.apache.org) -- Parent project for Powering Columnar In-Memory Analytics, including affiliated open source projects
+* [Perspective](https://github.com/finos/perspective) -- Perspective is an interactive analytics and data visualization component well-suited for large and/or streaming datasets. Perspective leverages Arrow C++ compiled to WebAssembly.
+* [Falcon](https://github.com/uwdata/falcon) is a visualization tool for linked interactions across multiple aggregate visualizations of millions or billions of records.
+* [Vega](https://github.com/vega) is an ecosystem of tools for interactive visualizations on the web. The Vega team implemented an [Arrow loader](https://github.com/vega/vega-loader-arrow).
+* [Arquero](https://github.com/uwdata/arquero) is a library for query processing and transformation of array-backed data tables.
+* [OmniSci](https://github.com/omnisci/mapd-connector) is a GPU database. Its JavaScript connector returns Arrow dataframes.
+
+# License
+
+[Apache 2.0](https://github.com/apache/arrow/blob/master/LICENSE)
+
+[1]: mailto:dev-subscribe@arrow.apache.org
+[2]: https://github.com/apache/arrow/tree/master/format
+[3]: https://github.com/apache/arrow/issues
+[4]: https://github.com/apache/arrow
+[5]: https://arrow.apache.org/docs/js/
diff --git a/igv_component/node_modules/apache-arrow/bin/arrow2csv.d.ts b/igv_component/node_modules/apache-arrow/bin/arrow2csv.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..237decae6b4b28bc9855e419602deef4958c75ca
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/bin/arrow2csv.d.ts
@@ -0,0 +1,2 @@
+#! /usr/bin/env node
+export {};
diff --git a/igv_component/node_modules/apache-arrow/bin/arrow2csv.d.ts.map b/igv_component/node_modules/apache-arrow/bin/arrow2csv.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..2a8493db27521a06a8e7ed218e46ee6e3918c231
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/bin/arrow2csv.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["bin/arrow2csv.ts"],"names":[],"mappings":"","file":"arrow2csv.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/bin/arrow2csv.js b/igv_component/node_modules/apache-arrow/bin/arrow2csv.js
new file mode 100644
index 0000000000000000000000000000000000000000..0b2db4af385389ee75e134764a9617f207a4666c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/bin/arrow2csv.js
@@ -0,0 +1,351 @@
+#! /usr/bin/env node
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+/* eslint-disable unicorn/no-array-for-each */
+const fs = tslib_1.__importStar(require("fs"));
+const stream = tslib_1.__importStar(require("stream"));
+const pretty_js_1 = require("../util/pretty.js");
+const Arrow_node_js_1 = require("../Arrow.node.js");
+const command_line_usage_1 = tslib_1.__importDefault(require("command-line-usage"));
+const command_line_args_1 = tslib_1.__importDefault(require("command-line-args"));
+const pad_left_1 = tslib_1.__importDefault(require("pad-left"));
+// @ts-ignore
+const json_bignum_1 = require("json-bignum");
+const argv = (0, command_line_args_1.default)(cliOpts(), { partial: true });
+const files = argv.help ? [] : [...(argv.file || []), ...(argv._unknown || [])].filter(Boolean);
+const state = Object.assign(Object.assign({}, argv), { closed: false, maxColWidths: [10] });
+(() => tslib_1.__awaiter(void 0, void 0, void 0, function* () {
+    var e_1, _a;
+    const sources = argv.help ? [] : [
+        ...files.map((file) => () => fs.createReadStream(file)),
+        ...(process.stdin.isTTY ? [] : [() => process.stdin])
+    ].filter(Boolean);
+    let reader;
+    let hasReaders = false;
+    for (const source of sources) {
+        if (state.closed) {
+            break;
+        }
+        try {
+            for (var _b = (e_1 = void 0, tslib_1.__asyncValues(recordBatchReaders(source))), _c; _c = yield _b.next(), !_c.done;) {
+                reader = _c.value;
+                hasReaders = true;
+                const transformToString = batchesToString(state, reader.schema);
+                yield pipeTo(reader.pipe(transformToString), process.stdout, { end: false }).catch(() => state.closed = true); // Handle EPIPE errors
+            }
+        }
+        catch (e_1_1) { e_1 = { error: e_1_1 }; }
+        finally {
+            try {
+                if (_c && !_c.done && (_a = _b.return)) yield _a.call(_b);
+            }
+            finally { if (e_1) throw e_1.error; }
+        }
+        if (state.closed) {
+            break;
+        }
+    }
+    return hasReaders ? 0 : print_usage();
+}))()
+    .then((x) => +x || 0, (err) => {
+    if (err) {
+        console.error(`${(err === null || err === void 0 ? void 0 : err.stack) || err}`);
+    }
+    return process.exitCode || 1;
+}).then((code) => process.exit(code));
+function pipeTo(source, sink, opts) {
+    return new Promise((resolve, reject) => {
+        source.on('end', onEnd).pipe(sink, opts).on('error', onErr);
+        function onEnd() { done(undefined, resolve); }
+        function onErr(err) { done(err, reject); }
+        function done(e, cb) {
+            source.removeListener('end', onEnd);
+            sink.removeListener('error', onErr);
+            cb(e);
+        }
+    });
+}
+function recordBatchReaders(createSourceStream) {
+    return tslib_1.__asyncGenerator(this, arguments, function* recordBatchReaders_1() {
+        var e_2, _a, e_3, _b;
+        const json = new Arrow_node_js_1.AsyncByteQueue();
+        const stream = new Arrow_node_js_1.AsyncByteQueue();
+        const source = createSourceStream();
+        let reader = null;
+        let readers = null;
+        // tee the input source, just in case it's JSON
+        source.on('end', () => [stream, json].forEach((y) => y.close()))
+            .on('data', (x) => [stream, json].forEach((y) => y.write(x)))
+            .on('error', (e) => [stream, json].forEach((y) => y.abort(e)));
+        try {
+            try {
+                for (var _c = tslib_1.__asyncValues(Arrow_node_js_1.RecordBatchReader.readAll(stream)), _d; _d = yield tslib_1.__await(_c.next()), !_d.done;) {
+                    reader = _d.value;
+                    reader && (yield yield tslib_1.__await(reader));
+                }
+            }
+            catch (e_2_1) { e_2 = { error: e_2_1 }; }
+            finally {
+                try {
+                    if (_d && !_d.done && (_a = _c.return)) yield tslib_1.__await(_a.call(_c));
+                }
+                finally { if (e_2) throw e_2.error; }
+            }
+            if (reader)
+                return yield tslib_1.__await(void 0);
+        }
+        catch (_e) {
+            readers = null;
+        }
+        if (!readers) {
+            yield tslib_1.__await(json.closed);
+            if (source instanceof fs.ReadStream) {
+                source.close();
+            }
+            // If the data in the `json` ByteQueue parses to JSON, then assume it's Arrow JSON from a file or stdin
+            try {
+                try {
+                    for (var _f = tslib_1.__asyncValues(Arrow_node_js_1.RecordBatchReader.readAll((0, json_bignum_1.parse)(yield tslib_1.__await(json.toString())))), _g; _g = yield tslib_1.__await(_f.next()), !_g.done;) {
+                        reader = _g.value;
+                        reader && (yield yield tslib_1.__await(reader));
+                    }
+                }
+                catch (e_3_1) { e_3 = { error: e_3_1 }; }
+                finally {
+                    try {
+                        if (_g && !_g.done && (_b = _f.return)) yield tslib_1.__await(_b.call(_f));
+                    }
+                    finally { if (e_3) throw e_3.error; }
+                }
+            }
+            catch (_h) {
+                readers = null;
+            }
+        }
+    });
+}
+function batchesToString(state, schema) {
+    let rowId = 0;
+    let batchId = -1;
+    let maxColWidths = [10];
+    const { hr, sep, metadata } = state;
+    const header = ['row_id', ...schema.fields.map((f) => `${f}`)].map(val => (0, pretty_js_1.valueToString)(val));
+    state.maxColWidths = header.map((x, i) => Math.max(maxColWidths[i] || 0, x.length));
+    return new stream.Transform({
+        encoding: 'utf8',
+        writableObjectMode: true,
+        readableObjectMode: false,
+        final(cb) {
+            // if there were no batches, then print the Schema, and metadata
+            if (batchId === -1) {
+                hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n\n`);
+                this.push(`${formatRow(header, maxColWidths, sep)}\n`);
+                if (metadata && schema.metadata.size > 0) {
+                    this.push(`metadata:\n${formatMetadata(schema.metadata)}\n`);
+                }
+            }
+            hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n\n`);
+            cb();
+        },
+        transform(batch, _enc, cb) {
+            var _a;
+            batch = !((_a = state.schema) === null || _a === void 0 ? void 0 : _a.length) ? batch : batch.select(state.schema);
+            if (state.closed) {
+                return cb(undefined, null);
+            }
+            // Pass one to convert to strings and count max column widths
+            state.maxColWidths = measureColumnWidths(rowId, batch, header.map((x, i) => Math.max(maxColWidths[i] || 0, x.length)));
+            // If this is the first batch in a stream, print a top horizontal rule, schema metadata, and
+            if (++batchId === 0) {
+                hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n`);
+                if (metadata && batch.schema.metadata.size > 0) {
+                    this.push(`metadata:\n${formatMetadata(batch.schema.metadata)}\n`);
+                    hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n`);
+                }
+                if (batch.numRows <= 0 || batch.numCols <= 0) {
+                    this.push(`${formatRow(header, maxColWidths = state.maxColWidths, sep)}\n`);
+                }
+            }
+            if (batch.numRows > 0 && batch.numCols > 0) {
+                // If any of the column widths changed, print the header again
+                if (rowId % 350 !== 0 && JSON.stringify(state.maxColWidths) !== JSON.stringify(maxColWidths)) {
+                    this.push(`${formatRow(header, state.maxColWidths, sep)}\n`);
+                }
+                maxColWidths = state.maxColWidths;
+                for (const row of batch) {
+                    if (state.closed) {
+                        break;
+                    }
+                    else if (!row) {
+                        continue;
+                    }
+                    if (rowId % 350 === 0) {
+                        this.push(`${formatRow(header, maxColWidths, sep)}\n`);
+                    }
+                    this.push(`${formatRow([rowId++, ...row.toArray()].map(v => (0, pretty_js_1.valueToString)(v)), maxColWidths, sep)}\n`);
+                }
+            }
+            cb();
+        }
+    });
+}
+function horizontalRule(maxColWidths, hr = '', sep = ' | ') {
+    return ` ${(0, pad_left_1.default)('', maxColWidths.reduce((x, y) => x + y, -2 + maxColWidths.length * sep.length), hr)}`;
+}
+function formatRow(row = [], maxColWidths = [], sep = ' | ') {
+    return `${row.map((x, j) => (0, pad_left_1.default)(x, maxColWidths[j])).join(sep)}`;
+}
+function formatMetadataValue(value = '') {
+    let parsed = value;
+    try {
+        parsed = JSON.stringify(JSON.parse(value), null, 2);
+    }
+    catch (_a) {
+        parsed = value;
+    }
+    return (0, pretty_js_1.valueToString)(parsed).split('\n').join('\n  ');
+}
+function formatMetadata(metadata) {
+    return [...metadata].map(([key, val]) => `  ${key}: ${formatMetadataValue(val)}`).join(',  \n');
+}
+function measureColumnWidths(rowId, batch, maxColWidths = []) {
+    let val, j = 0;
+    for (const row of batch) {
+        if (!row) {
+            continue;
+        }
+        maxColWidths[j = 0] = Math.max(maxColWidths[0] || 0, (`${rowId++}`).length);
+        for (val of row) {
+            if (val && typedArrayElementWidths.has(val.constructor) && (typeof val[Symbol.toPrimitive] !== 'function')) {
+                // If we're printing a column of TypedArrays, ensure the column is wide enough to accommodate
+                // the widest possible element for a given byte size, since JS omits leading zeroes. For example:
+                // 1 |  [1137743649,2170567488,244696391,2122556476]
+                // 2 |                                          null
+                // 3 |   [637174007,2142281880,961736230,2912449282]
+                // 4 |    [1035112265,21832886,412842672,2207710517]
+                // 5 |                                          null
+                // 6 |                                          null
+                // 7 |     [2755142991,4192423256,2994359,467878370]
+                const elementWidth = typedArrayElementWidths.get(val.constructor);
+                maxColWidths[j + 1] = Math.max(maxColWidths[j + 1] || 0, 2 + // brackets on each end
+                    (val.length - 1) + // commas between elements
+                    (val.length * elementWidth) // width of stringified 2^N-1
+                );
+            }
+            else {
+                maxColWidths[j + 1] = Math.max(maxColWidths[j + 1] || 0, (0, pretty_js_1.valueToString)(val).length);
+            }
+            ++j;
+        }
+    }
+    return maxColWidths;
+}
+// Measure the stringified representation of 2^N-1 for each TypedArray variant
+const typedArrayElementWidths = (() => {
+    const maxElementWidth = (ArrayType) => {
+        const octets = Array.from({ length: ArrayType.BYTES_PER_ELEMENT - 1 }, _ => 255);
+        return `${new ArrayType(new Uint8Array([...octets, 254]).buffer)[0]}`.length;
+    };
+    return new Map([
+        [Int8Array, maxElementWidth(Int8Array)],
+        [Int16Array, maxElementWidth(Int16Array)],
+        [Int32Array, maxElementWidth(Int32Array)],
+        [Uint8Array, maxElementWidth(Uint8Array)],
+        [Uint16Array, maxElementWidth(Uint16Array)],
+        [Uint32Array, maxElementWidth(Uint32Array)],
+        [Float32Array, maxElementWidth(Float32Array)],
+        [Float64Array, maxElementWidth(Float64Array)],
+        [Uint8ClampedArray, maxElementWidth(Uint8ClampedArray)]
+    ]);
+})();
+function cliOpts() {
+    return [
+        {
+            type: String,
+            name: 'schema', alias: 's',
+            optional: true, multiple: true,
+            typeLabel: '{underline columns}',
+            description: 'A space-delimited list of column names'
+        },
+        {
+            type: String,
+            name: 'file', alias: 'f',
+            optional: true, multiple: true,
+            description: 'The Arrow file to read'
+        },
+        {
+            type: String,
+            name: 'sep', optional: true, default: ' | ',
+            description: 'The column separator character (default: " | ")'
+        },
+        {
+            type: String,
+            name: 'hr', optional: true, default: '',
+            description: 'The horizontal border character (default: "")'
+        },
+        {
+            type: Boolean,
+            name: 'metadata', alias: 'm',
+            optional: true, default: false,
+            description: 'Flag to print Schema metadata (default: false)'
+        },
+        {
+            type: Boolean,
+            name: 'help', optional: true, default: false,
+            description: 'Print this usage guide.'
+        }
+    ];
+}
+function print_usage() {
+    console.log((0, command_line_usage_1.default)([
+        {
+            header: 'arrow2csv',
+            content: 'Print a CSV from an Arrow file'
+        },
+        {
+            header: 'Synopsis',
+            content: [
+                '$ arrow2csv {underline file.arrow} [{bold --schema} column_name ...]',
+                '$ arrow2csv [{bold --schema} column_name ...] [{bold --file} {underline file.arrow}]',
+                '$ arrow2csv {bold -s} column_1 {bold -s} column_2 [{bold -f} {underline file.arrow}]',
+                '$ arrow2csv [{bold --help}]'
+            ]
+        },
+        {
+            header: 'Options',
+            optionList: cliOpts()
+        },
+        {
+            header: 'Example',
+            content: [
+                '$ arrow2csv --schema foo baz --sep " , " -f simple.arrow',
+                '>   "row_id", "foo: Int32", "baz: Utf8"',
+                '>          0,            1,        "aa"',
+                '>          1,         null,        null',
+                '>          2,            3,        null',
+                '>          3,            4,       "bbb"',
+                '>          4,            5,      "cccc"',
+            ]
+        }
+    ]));
+    return 1;
+}
+
+//# sourceMappingURL=arrow2csv.js.map
diff --git a/igv_component/node_modules/apache-arrow/bin/arrow2csv.js.map b/igv_component/node_modules/apache-arrow/bin/arrow2csv.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..35c04aafbcf22bbfba4260bb29d718815adabd9a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/bin/arrow2csv.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/bin/arrow2csv.mjs b/igv_component/node_modules/apache-arrow/bin/arrow2csv.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..80be47aafa99d1c8c91c095f3c3fef4fc2fb8f1b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/bin/arrow2csv.mjs
@@ -0,0 +1,349 @@
+#! /usr/bin/env node
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { __asyncGenerator, __asyncValues, __await, __awaiter } from "tslib";
+/* eslint-disable unicorn/no-array-for-each */
+import * as fs from 'fs';
+import * as stream from 'stream';
+import { valueToString } from '../util/pretty.mjs';
+import { RecordBatchReader, AsyncByteQueue } from '../Arrow.node.mjs';
+import commandLineUsage from 'command-line-usage';
+import commandLineArgs from 'command-line-args';
+import padLeft from 'pad-left';
+// @ts-ignore
+import { parse as bignumJSONParse } from 'json-bignum';
+const argv = commandLineArgs(cliOpts(), { partial: true });
+const files = argv.help ? [] : [...(argv.file || []), ...(argv._unknown || [])].filter(Boolean);
+const state = Object.assign(Object.assign({}, argv), { closed: false, maxColWidths: [10] });
+(() => __awaiter(void 0, void 0, void 0, function* () {
+    var e_1, _a;
+    const sources = argv.help ? [] : [
+        ...files.map((file) => () => fs.createReadStream(file)),
+        ...(process.stdin.isTTY ? [] : [() => process.stdin])
+    ].filter(Boolean);
+    let reader;
+    let hasReaders = false;
+    for (const source of sources) {
+        if (state.closed) {
+            break;
+        }
+        try {
+            for (var _b = (e_1 = void 0, __asyncValues(recordBatchReaders(source))), _c; _c = yield _b.next(), !_c.done;) {
+                reader = _c.value;
+                hasReaders = true;
+                const transformToString = batchesToString(state, reader.schema);
+                yield pipeTo(reader.pipe(transformToString), process.stdout, { end: false }).catch(() => state.closed = true); // Handle EPIPE errors
+            }
+        }
+        catch (e_1_1) { e_1 = { error: e_1_1 }; }
+        finally {
+            try {
+                if (_c && !_c.done && (_a = _b.return)) yield _a.call(_b);
+            }
+            finally { if (e_1) throw e_1.error; }
+        }
+        if (state.closed) {
+            break;
+        }
+    }
+    return hasReaders ? 0 : print_usage();
+}))()
+    .then((x) => +x || 0, (err) => {
+    if (err) {
+        console.error(`${(err === null || err === void 0 ? void 0 : err.stack) || err}`);
+    }
+    return process.exitCode || 1;
+}).then((code) => process.exit(code));
+function pipeTo(source, sink, opts) {
+    return new Promise((resolve, reject) => {
+        source.on('end', onEnd).pipe(sink, opts).on('error', onErr);
+        function onEnd() { done(undefined, resolve); }
+        function onErr(err) { done(err, reject); }
+        function done(e, cb) {
+            source.removeListener('end', onEnd);
+            sink.removeListener('error', onErr);
+            cb(e);
+        }
+    });
+}
+function recordBatchReaders(createSourceStream) {
+    return __asyncGenerator(this, arguments, function* recordBatchReaders_1() {
+        var e_2, _a, e_3, _b;
+        const json = new AsyncByteQueue();
+        const stream = new AsyncByteQueue();
+        const source = createSourceStream();
+        let reader = null;
+        let readers = null;
+        // tee the input source, just in case it's JSON
+        source.on('end', () => [stream, json].forEach((y) => y.close()))
+            .on('data', (x) => [stream, json].forEach((y) => y.write(x)))
+            .on('error', (e) => [stream, json].forEach((y) => y.abort(e)));
+        try {
+            try {
+                for (var _c = __asyncValues(RecordBatchReader.readAll(stream)), _d; _d = yield __await(_c.next()), !_d.done;) {
+                    reader = _d.value;
+                    reader && (yield yield __await(reader));
+                }
+            }
+            catch (e_2_1) { e_2 = { error: e_2_1 }; }
+            finally {
+                try {
+                    if (_d && !_d.done && (_a = _c.return)) yield __await(_a.call(_c));
+                }
+                finally { if (e_2) throw e_2.error; }
+            }
+            if (reader)
+                return yield __await(void 0);
+        }
+        catch (_e) {
+            readers = null;
+        }
+        if (!readers) {
+            yield __await(json.closed);
+            if (source instanceof fs.ReadStream) {
+                source.close();
+            }
+            // If the data in the `json` ByteQueue parses to JSON, then assume it's Arrow JSON from a file or stdin
+            try {
+                try {
+                    for (var _f = __asyncValues(RecordBatchReader.readAll(bignumJSONParse(yield __await(json.toString())))), _g; _g = yield __await(_f.next()), !_g.done;) {
+                        reader = _g.value;
+                        reader && (yield yield __await(reader));
+                    }
+                }
+                catch (e_3_1) { e_3 = { error: e_3_1 }; }
+                finally {
+                    try {
+                        if (_g && !_g.done && (_b = _f.return)) yield __await(_b.call(_f));
+                    }
+                    finally { if (e_3) throw e_3.error; }
+                }
+            }
+            catch (_h) {
+                readers = null;
+            }
+        }
+    });
+}
+function batchesToString(state, schema) {
+    let rowId = 0;
+    let batchId = -1;
+    let maxColWidths = [10];
+    const { hr, sep, metadata } = state;
+    const header = ['row_id', ...schema.fields.map((f) => `${f}`)].map(val => valueToString(val));
+    state.maxColWidths = header.map((x, i) => Math.max(maxColWidths[i] || 0, x.length));
+    return new stream.Transform({
+        encoding: 'utf8',
+        writableObjectMode: true,
+        readableObjectMode: false,
+        final(cb) {
+            // if there were no batches, then print the Schema, and metadata
+            if (batchId === -1) {
+                hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n\n`);
+                this.push(`${formatRow(header, maxColWidths, sep)}\n`);
+                if (metadata && schema.metadata.size > 0) {
+                    this.push(`metadata:\n${formatMetadata(schema.metadata)}\n`);
+                }
+            }
+            hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n\n`);
+            cb();
+        },
+        transform(batch, _enc, cb) {
+            var _a;
+            batch = !((_a = state.schema) === null || _a === void 0 ? void 0 : _a.length) ? batch : batch.select(state.schema);
+            if (state.closed) {
+                return cb(undefined, null);
+            }
+            // Pass one to convert to strings and count max column widths
+            state.maxColWidths = measureColumnWidths(rowId, batch, header.map((x, i) => Math.max(maxColWidths[i] || 0, x.length)));
+            // If this is the first batch in a stream, print a top horizontal rule, schema metadata, and
+            if (++batchId === 0) {
+                hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n`);
+                if (metadata && batch.schema.metadata.size > 0) {
+                    this.push(`metadata:\n${formatMetadata(batch.schema.metadata)}\n`);
+                    hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n`);
+                }
+                if (batch.numRows <= 0 || batch.numCols <= 0) {
+                    this.push(`${formatRow(header, maxColWidths = state.maxColWidths, sep)}\n`);
+                }
+            }
+            if (batch.numRows > 0 && batch.numCols > 0) {
+                // If any of the column widths changed, print the header again
+                if (rowId % 350 !== 0 && JSON.stringify(state.maxColWidths) !== JSON.stringify(maxColWidths)) {
+                    this.push(`${formatRow(header, state.maxColWidths, sep)}\n`);
+                }
+                maxColWidths = state.maxColWidths;
+                for (const row of batch) {
+                    if (state.closed) {
+                        break;
+                    }
+                    else if (!row) {
+                        continue;
+                    }
+                    if (rowId % 350 === 0) {
+                        this.push(`${formatRow(header, maxColWidths, sep)}\n`);
+                    }
+                    this.push(`${formatRow([rowId++, ...row.toArray()].map(v => valueToString(v)), maxColWidths, sep)}\n`);
+                }
+            }
+            cb();
+        }
+    });
+}
+function horizontalRule(maxColWidths, hr = '', sep = ' | ') {
+    return ` ${padLeft('', maxColWidths.reduce((x, y) => x + y, -2 + maxColWidths.length * sep.length), hr)}`;
+}
+function formatRow(row = [], maxColWidths = [], sep = ' | ') {
+    return `${row.map((x, j) => padLeft(x, maxColWidths[j])).join(sep)}`;
+}
+function formatMetadataValue(value = '') {
+    let parsed = value;
+    try {
+        parsed = JSON.stringify(JSON.parse(value), null, 2);
+    }
+    catch (_a) {
+        parsed = value;
+    }
+    return valueToString(parsed).split('\n').join('\n  ');
+}
+function formatMetadata(metadata) {
+    return [...metadata].map(([key, val]) => `  ${key}: ${formatMetadataValue(val)}`).join(',  \n');
+}
+function measureColumnWidths(rowId, batch, maxColWidths = []) {
+    let val, j = 0;
+    for (const row of batch) {
+        if (!row) {
+            continue;
+        }
+        maxColWidths[j = 0] = Math.max(maxColWidths[0] || 0, (`${rowId++}`).length);
+        for (val of row) {
+            if (val && typedArrayElementWidths.has(val.constructor) && (typeof val[Symbol.toPrimitive] !== 'function')) {
+                // If we're printing a column of TypedArrays, ensure the column is wide enough to accommodate
+                // the widest possible element for a given byte size, since JS omits leading zeroes. For example:
+                // 1 |  [1137743649,2170567488,244696391,2122556476]
+                // 2 |                                          null
+                // 3 |   [637174007,2142281880,961736230,2912449282]
+                // 4 |    [1035112265,21832886,412842672,2207710517]
+                // 5 |                                          null
+                // 6 |                                          null
+                // 7 |     [2755142991,4192423256,2994359,467878370]
+                const elementWidth = typedArrayElementWidths.get(val.constructor);
+                maxColWidths[j + 1] = Math.max(maxColWidths[j + 1] || 0, 2 + // brackets on each end
+                    (val.length - 1) + // commas between elements
+                    (val.length * elementWidth) // width of stringified 2^N-1
+                );
+            }
+            else {
+                maxColWidths[j + 1] = Math.max(maxColWidths[j + 1] || 0, valueToString(val).length);
+            }
+            ++j;
+        }
+    }
+    return maxColWidths;
+}
+// Measure the stringified representation of 2^N-1 for each TypedArray variant
+const typedArrayElementWidths = (() => {
+    const maxElementWidth = (ArrayType) => {
+        const octets = Array.from({ length: ArrayType.BYTES_PER_ELEMENT - 1 }, _ => 255);
+        return `${new ArrayType(new Uint8Array([...octets, 254]).buffer)[0]}`.length;
+    };
+    return new Map([
+        [Int8Array, maxElementWidth(Int8Array)],
+        [Int16Array, maxElementWidth(Int16Array)],
+        [Int32Array, maxElementWidth(Int32Array)],
+        [Uint8Array, maxElementWidth(Uint8Array)],
+        [Uint16Array, maxElementWidth(Uint16Array)],
+        [Uint32Array, maxElementWidth(Uint32Array)],
+        [Float32Array, maxElementWidth(Float32Array)],
+        [Float64Array, maxElementWidth(Float64Array)],
+        [Uint8ClampedArray, maxElementWidth(Uint8ClampedArray)]
+    ]);
+})();
+function cliOpts() {
+    return [
+        {
+            type: String,
+            name: 'schema', alias: 's',
+            optional: true, multiple: true,
+            typeLabel: '{underline columns}',
+            description: 'A space-delimited list of column names'
+        },
+        {
+            type: String,
+            name: 'file', alias: 'f',
+            optional: true, multiple: true,
+            description: 'The Arrow file to read'
+        },
+        {
+            type: String,
+            name: 'sep', optional: true, default: ' | ',
+            description: 'The column separator character (default: " | ")'
+        },
+        {
+            type: String,
+            name: 'hr', optional: true, default: '',
+            description: 'The horizontal border character (default: "")'
+        },
+        {
+            type: Boolean,
+            name: 'metadata', alias: 'm',
+            optional: true, default: false,
+            description: 'Flag to print Schema metadata (default: false)'
+        },
+        {
+            type: Boolean,
+            name: 'help', optional: true, default: false,
+            description: 'Print this usage guide.'
+        }
+    ];
+}
+function print_usage() {
+    console.log(commandLineUsage([
+        {
+            header: 'arrow2csv',
+            content: 'Print a CSV from an Arrow file'
+        },
+        {
+            header: 'Synopsis',
+            content: [
+                '$ arrow2csv {underline file.arrow} [{bold --schema} column_name ...]',
+                '$ arrow2csv [{bold --schema} column_name ...] [{bold --file} {underline file.arrow}]',
+                '$ arrow2csv {bold -s} column_1 {bold -s} column_2 [{bold -f} {underline file.arrow}]',
+                '$ arrow2csv [{bold --help}]'
+            ]
+        },
+        {
+            header: 'Options',
+            optionList: cliOpts()
+        },
+        {
+            header: 'Example',
+            content: [
+                '$ arrow2csv --schema foo baz --sep " , " -f simple.arrow',
+                '>   "row_id", "foo: Int32", "baz: Utf8"',
+                '>          0,            1,        "aa"',
+                '>          1,         null,        null',
+                '>          2,            3,        null',
+                '>          3,            4,       "bbb"',
+                '>          4,            5,      "cccc"',
+            ]
+        }
+    ]));
+    return 1;
+}
+
+//# sourceMappingURL=arrow2csv.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/bin/arrow2csv.mjs.map b/igv_component/node_modules/apache-arrow/bin/arrow2csv.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..3205d4a365e468aebb511a64d6653170955dd7ee
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/bin/arrow2csv.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/bin/bin/arrow2csv.js b/igv_component/node_modules/apache-arrow/bin/bin/arrow2csv.js
new file mode 100644
index 0000000000000000000000000000000000000000..0b2db4af385389ee75e134764a9617f207a4666c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/bin/bin/arrow2csv.js
@@ -0,0 +1,351 @@
+#! /usr/bin/env node
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+/* eslint-disable unicorn/no-array-for-each */
+const fs = tslib_1.__importStar(require("fs"));
+const stream = tslib_1.__importStar(require("stream"));
+const pretty_js_1 = require("../util/pretty.js");
+const Arrow_node_js_1 = require("../Arrow.node.js");
+const command_line_usage_1 = tslib_1.__importDefault(require("command-line-usage"));
+const command_line_args_1 = tslib_1.__importDefault(require("command-line-args"));
+const pad_left_1 = tslib_1.__importDefault(require("pad-left"));
+// @ts-ignore
+const json_bignum_1 = require("json-bignum");
+const argv = (0, command_line_args_1.default)(cliOpts(), { partial: true });
+const files = argv.help ? [] : [...(argv.file || []), ...(argv._unknown || [])].filter(Boolean);
+const state = Object.assign(Object.assign({}, argv), { closed: false, maxColWidths: [10] });
+(() => tslib_1.__awaiter(void 0, void 0, void 0, function* () {
+    var e_1, _a;
+    const sources = argv.help ? [] : [
+        ...files.map((file) => () => fs.createReadStream(file)),
+        ...(process.stdin.isTTY ? [] : [() => process.stdin])
+    ].filter(Boolean);
+    let reader;
+    let hasReaders = false;
+    for (const source of sources) {
+        if (state.closed) {
+            break;
+        }
+        try {
+            for (var _b = (e_1 = void 0, tslib_1.__asyncValues(recordBatchReaders(source))), _c; _c = yield _b.next(), !_c.done;) {
+                reader = _c.value;
+                hasReaders = true;
+                const transformToString = batchesToString(state, reader.schema);
+                yield pipeTo(reader.pipe(transformToString), process.stdout, { end: false }).catch(() => state.closed = true); // Handle EPIPE errors
+            }
+        }
+        catch (e_1_1) { e_1 = { error: e_1_1 }; }
+        finally {
+            try {
+                if (_c && !_c.done && (_a = _b.return)) yield _a.call(_b);
+            }
+            finally { if (e_1) throw e_1.error; }
+        }
+        if (state.closed) {
+            break;
+        }
+    }
+    return hasReaders ? 0 : print_usage();
+}))()
+    .then((x) => +x || 0, (err) => {
+    if (err) {
+        console.error(`${(err === null || err === void 0 ? void 0 : err.stack) || err}`);
+    }
+    return process.exitCode || 1;
+}).then((code) => process.exit(code));
+function pipeTo(source, sink, opts) {
+    return new Promise((resolve, reject) => {
+        source.on('end', onEnd).pipe(sink, opts).on('error', onErr);
+        function onEnd() { done(undefined, resolve); }
+        function onErr(err) { done(err, reject); }
+        function done(e, cb) {
+            source.removeListener('end', onEnd);
+            sink.removeListener('error', onErr);
+            cb(e);
+        }
+    });
+}
+function recordBatchReaders(createSourceStream) {
+    return tslib_1.__asyncGenerator(this, arguments, function* recordBatchReaders_1() {
+        var e_2, _a, e_3, _b;
+        const json = new Arrow_node_js_1.AsyncByteQueue();
+        const stream = new Arrow_node_js_1.AsyncByteQueue();
+        const source = createSourceStream();
+        let reader = null;
+        let readers = null;
+        // tee the input source, just in case it's JSON
+        source.on('end', () => [stream, json].forEach((y) => y.close()))
+            .on('data', (x) => [stream, json].forEach((y) => y.write(x)))
+            .on('error', (e) => [stream, json].forEach((y) => y.abort(e)));
+        try {
+            try {
+                for (var _c = tslib_1.__asyncValues(Arrow_node_js_1.RecordBatchReader.readAll(stream)), _d; _d = yield tslib_1.__await(_c.next()), !_d.done;) {
+                    reader = _d.value;
+                    reader && (yield yield tslib_1.__await(reader));
+                }
+            }
+            catch (e_2_1) { e_2 = { error: e_2_1 }; }
+            finally {
+                try {
+                    if (_d && !_d.done && (_a = _c.return)) yield tslib_1.__await(_a.call(_c));
+                }
+                finally { if (e_2) throw e_2.error; }
+            }
+            if (reader)
+                return yield tslib_1.__await(void 0);
+        }
+        catch (_e) {
+            readers = null;
+        }
+        if (!readers) {
+            yield tslib_1.__await(json.closed);
+            if (source instanceof fs.ReadStream) {
+                source.close();
+            }
+            // If the data in the `json` ByteQueue parses to JSON, then assume it's Arrow JSON from a file or stdin
+            try {
+                try {
+                    for (var _f = tslib_1.__asyncValues(Arrow_node_js_1.RecordBatchReader.readAll((0, json_bignum_1.parse)(yield tslib_1.__await(json.toString())))), _g; _g = yield tslib_1.__await(_f.next()), !_g.done;) {
+                        reader = _g.value;
+                        reader && (yield yield tslib_1.__await(reader));
+                    }
+                }
+                catch (e_3_1) { e_3 = { error: e_3_1 }; }
+                finally {
+                    try {
+                        if (_g && !_g.done && (_b = _f.return)) yield tslib_1.__await(_b.call(_f));
+                    }
+                    finally { if (e_3) throw e_3.error; }
+                }
+            }
+            catch (_h) {
+                readers = null;
+            }
+        }
+    });
+}
+function batchesToString(state, schema) {
+    let rowId = 0;
+    let batchId = -1;
+    let maxColWidths = [10];
+    const { hr, sep, metadata } = state;
+    const header = ['row_id', ...schema.fields.map((f) => `${f}`)].map(val => (0, pretty_js_1.valueToString)(val));
+    state.maxColWidths = header.map((x, i) => Math.max(maxColWidths[i] || 0, x.length));
+    return new stream.Transform({
+        encoding: 'utf8',
+        writableObjectMode: true,
+        readableObjectMode: false,
+        final(cb) {
+            // if there were no batches, then print the Schema, and metadata
+            if (batchId === -1) {
+                hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n\n`);
+                this.push(`${formatRow(header, maxColWidths, sep)}\n`);
+                if (metadata && schema.metadata.size > 0) {
+                    this.push(`metadata:\n${formatMetadata(schema.metadata)}\n`);
+                }
+            }
+            hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n\n`);
+            cb();
+        },
+        transform(batch, _enc, cb) {
+            var _a;
+            batch = !((_a = state.schema) === null || _a === void 0 ? void 0 : _a.length) ? batch : batch.select(state.schema);
+            if (state.closed) {
+                return cb(undefined, null);
+            }
+            // Pass one to convert to strings and count max column widths
+            state.maxColWidths = measureColumnWidths(rowId, batch, header.map((x, i) => Math.max(maxColWidths[i] || 0, x.length)));
+            // If this is the first batch in a stream, print a top horizontal rule, schema metadata, and
+            if (++batchId === 0) {
+                hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n`);
+                if (metadata && batch.schema.metadata.size > 0) {
+                    this.push(`metadata:\n${formatMetadata(batch.schema.metadata)}\n`);
+                    hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n`);
+                }
+                if (batch.numRows <= 0 || batch.numCols <= 0) {
+                    this.push(`${formatRow(header, maxColWidths = state.maxColWidths, sep)}\n`);
+                }
+            }
+            if (batch.numRows > 0 && batch.numCols > 0) {
+                // If any of the column widths changed, print the header again
+                if (rowId % 350 !== 0 && JSON.stringify(state.maxColWidths) !== JSON.stringify(maxColWidths)) {
+                    this.push(`${formatRow(header, state.maxColWidths, sep)}\n`);
+                }
+                maxColWidths = state.maxColWidths;
+                for (const row of batch) {
+                    if (state.closed) {
+                        break;
+                    }
+                    else if (!row) {
+                        continue;
+                    }
+                    if (rowId % 350 === 0) {
+                        this.push(`${formatRow(header, maxColWidths, sep)}\n`);
+                    }
+                    this.push(`${formatRow([rowId++, ...row.toArray()].map(v => (0, pretty_js_1.valueToString)(v)), maxColWidths, sep)}\n`);
+                }
+            }
+            cb();
+        }
+    });
+}
+function horizontalRule(maxColWidths, hr = '', sep = ' | ') {
+    return ` ${(0, pad_left_1.default)('', maxColWidths.reduce((x, y) => x + y, -2 + maxColWidths.length * sep.length), hr)}`;
+}
+function formatRow(row = [], maxColWidths = [], sep = ' | ') {
+    return `${row.map((x, j) => (0, pad_left_1.default)(x, maxColWidths[j])).join(sep)}`;
+}
+function formatMetadataValue(value = '') {
+    let parsed = value;
+    try {
+        parsed = JSON.stringify(JSON.parse(value), null, 2);
+    }
+    catch (_a) {
+        parsed = value;
+    }
+    return (0, pretty_js_1.valueToString)(parsed).split('\n').join('\n  ');
+}
+function formatMetadata(metadata) {
+    return [...metadata].map(([key, val]) => `  ${key}: ${formatMetadataValue(val)}`).join(',  \n');
+}
+function measureColumnWidths(rowId, batch, maxColWidths = []) {
+    let val, j = 0;
+    for (const row of batch) {
+        if (!row) {
+            continue;
+        }
+        maxColWidths[j = 0] = Math.max(maxColWidths[0] || 0, (`${rowId++}`).length);
+        for (val of row) {
+            if (val && typedArrayElementWidths.has(val.constructor) && (typeof val[Symbol.toPrimitive] !== 'function')) {
+                // If we're printing a column of TypedArrays, ensure the column is wide enough to accommodate
+                // the widest possible element for a given byte size, since JS omits leading zeroes. For example:
+                // 1 |  [1137743649,2170567488,244696391,2122556476]
+                // 2 |                                          null
+                // 3 |   [637174007,2142281880,961736230,2912449282]
+                // 4 |    [1035112265,21832886,412842672,2207710517]
+                // 5 |                                          null
+                // 6 |                                          null
+                // 7 |     [2755142991,4192423256,2994359,467878370]
+                const elementWidth = typedArrayElementWidths.get(val.constructor);
+                maxColWidths[j + 1] = Math.max(maxColWidths[j + 1] || 0, 2 + // brackets on each end
+                    (val.length - 1) + // commas between elements
+                    (val.length * elementWidth) // width of stringified 2^N-1
+                );
+            }
+            else {
+                maxColWidths[j + 1] = Math.max(maxColWidths[j + 1] || 0, (0, pretty_js_1.valueToString)(val).length);
+            }
+            ++j;
+        }
+    }
+    return maxColWidths;
+}
+// Measure the stringified representation of 2^N-1 for each TypedArray variant
+const typedArrayElementWidths = (() => {
+    const maxElementWidth = (ArrayType) => {
+        const octets = Array.from({ length: ArrayType.BYTES_PER_ELEMENT - 1 }, _ => 255);
+        return `${new ArrayType(new Uint8Array([...octets, 254]).buffer)[0]}`.length;
+    };
+    return new Map([
+        [Int8Array, maxElementWidth(Int8Array)],
+        [Int16Array, maxElementWidth(Int16Array)],
+        [Int32Array, maxElementWidth(Int32Array)],
+        [Uint8Array, maxElementWidth(Uint8Array)],
+        [Uint16Array, maxElementWidth(Uint16Array)],
+        [Uint32Array, maxElementWidth(Uint32Array)],
+        [Float32Array, maxElementWidth(Float32Array)],
+        [Float64Array, maxElementWidth(Float64Array)],
+        [Uint8ClampedArray, maxElementWidth(Uint8ClampedArray)]
+    ]);
+})();
+function cliOpts() {
+    return [
+        {
+            type: String,
+            name: 'schema', alias: 's',
+            optional: true, multiple: true,
+            typeLabel: '{underline columns}',
+            description: 'A space-delimited list of column names'
+        },
+        {
+            type: String,
+            name: 'file', alias: 'f',
+            optional: true, multiple: true,
+            description: 'The Arrow file to read'
+        },
+        {
+            type: String,
+            name: 'sep', optional: true, default: ' | ',
+            description: 'The column separator character (default: " | ")'
+        },
+        {
+            type: String,
+            name: 'hr', optional: true, default: '',
+            description: 'The horizontal border character (default: "")'
+        },
+        {
+            type: Boolean,
+            name: 'metadata', alias: 'm',
+            optional: true, default: false,
+            description: 'Flag to print Schema metadata (default: false)'
+        },
+        {
+            type: Boolean,
+            name: 'help', optional: true, default: false,
+            description: 'Print this usage guide.'
+        }
+    ];
+}
+function print_usage() {
+    console.log((0, command_line_usage_1.default)([
+        {
+            header: 'arrow2csv',
+            content: 'Print a CSV from an Arrow file'
+        },
+        {
+            header: 'Synopsis',
+            content: [
+                '$ arrow2csv {underline file.arrow} [{bold --schema} column_name ...]',
+                '$ arrow2csv [{bold --schema} column_name ...] [{bold --file} {underline file.arrow}]',
+                '$ arrow2csv {bold -s} column_1 {bold -s} column_2 [{bold -f} {underline file.arrow}]',
+                '$ arrow2csv [{bold --help}]'
+            ]
+        },
+        {
+            header: 'Options',
+            optionList: cliOpts()
+        },
+        {
+            header: 'Example',
+            content: [
+                '$ arrow2csv --schema foo baz --sep " , " -f simple.arrow',
+                '>   "row_id", "foo: Int32", "baz: Utf8"',
+                '>          0,            1,        "aa"',
+                '>          1,         null,        null',
+                '>          2,            3,        null',
+                '>          3,            4,       "bbb"',
+                '>          4,            5,      "cccc"',
+            ]
+        }
+    ]));
+    return 1;
+}
+
+//# sourceMappingURL=arrow2csv.js.map
diff --git a/igv_component/node_modules/apache-arrow/bin/bin/arrow2csv.js.map b/igv_component/node_modules/apache-arrow/bin/bin/arrow2csv.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..35c04aafbcf22bbfba4260bb29d718815adabd9a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/bin/bin/arrow2csv.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/bin/bin/arrow2csv.mjs b/igv_component/node_modules/apache-arrow/bin/bin/arrow2csv.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..0b2db4af385389ee75e134764a9617f207a4666c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/bin/bin/arrow2csv.mjs
@@ -0,0 +1,351 @@
+#! /usr/bin/env node
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+/* eslint-disable unicorn/no-array-for-each */
+const fs = tslib_1.__importStar(require("fs"));
+const stream = tslib_1.__importStar(require("stream"));
+const pretty_js_1 = require("../util/pretty.js");
+const Arrow_node_js_1 = require("../Arrow.node.js");
+const command_line_usage_1 = tslib_1.__importDefault(require("command-line-usage"));
+const command_line_args_1 = tslib_1.__importDefault(require("command-line-args"));
+const pad_left_1 = tslib_1.__importDefault(require("pad-left"));
+// @ts-ignore
+const json_bignum_1 = require("json-bignum");
+const argv = (0, command_line_args_1.default)(cliOpts(), { partial: true });
+const files = argv.help ? [] : [...(argv.file || []), ...(argv._unknown || [])].filter(Boolean);
+const state = Object.assign(Object.assign({}, argv), { closed: false, maxColWidths: [10] });
+(() => tslib_1.__awaiter(void 0, void 0, void 0, function* () {
+    var e_1, _a;
+    const sources = argv.help ? [] : [
+        ...files.map((file) => () => fs.createReadStream(file)),
+        ...(process.stdin.isTTY ? [] : [() => process.stdin])
+    ].filter(Boolean);
+    let reader;
+    let hasReaders = false;
+    for (const source of sources) {
+        if (state.closed) {
+            break;
+        }
+        try {
+            for (var _b = (e_1 = void 0, tslib_1.__asyncValues(recordBatchReaders(source))), _c; _c = yield _b.next(), !_c.done;) {
+                reader = _c.value;
+                hasReaders = true;
+                const transformToString = batchesToString(state, reader.schema);
+                yield pipeTo(reader.pipe(transformToString), process.stdout, { end: false }).catch(() => state.closed = true); // Handle EPIPE errors
+            }
+        }
+        catch (e_1_1) { e_1 = { error: e_1_1 }; }
+        finally {
+            try {
+                if (_c && !_c.done && (_a = _b.return)) yield _a.call(_b);
+            }
+            finally { if (e_1) throw e_1.error; }
+        }
+        if (state.closed) {
+            break;
+        }
+    }
+    return hasReaders ? 0 : print_usage();
+}))()
+    .then((x) => +x || 0, (err) => {
+    if (err) {
+        console.error(`${(err === null || err === void 0 ? void 0 : err.stack) || err}`);
+    }
+    return process.exitCode || 1;
+}).then((code) => process.exit(code));
+function pipeTo(source, sink, opts) {
+    return new Promise((resolve, reject) => {
+        source.on('end', onEnd).pipe(sink, opts).on('error', onErr);
+        function onEnd() { done(undefined, resolve); }
+        function onErr(err) { done(err, reject); }
+        function done(e, cb) {
+            source.removeListener('end', onEnd);
+            sink.removeListener('error', onErr);
+            cb(e);
+        }
+    });
+}
+function recordBatchReaders(createSourceStream) {
+    return tslib_1.__asyncGenerator(this, arguments, function* recordBatchReaders_1() {
+        var e_2, _a, e_3, _b;
+        const json = new Arrow_node_js_1.AsyncByteQueue();
+        const stream = new Arrow_node_js_1.AsyncByteQueue();
+        const source = createSourceStream();
+        let reader = null;
+        let readers = null;
+        // tee the input source, just in case it's JSON
+        source.on('end', () => [stream, json].forEach((y) => y.close()))
+            .on('data', (x) => [stream, json].forEach((y) => y.write(x)))
+            .on('error', (e) => [stream, json].forEach((y) => y.abort(e)));
+        try {
+            try {
+                for (var _c = tslib_1.__asyncValues(Arrow_node_js_1.RecordBatchReader.readAll(stream)), _d; _d = yield tslib_1.__await(_c.next()), !_d.done;) {
+                    reader = _d.value;
+                    reader && (yield yield tslib_1.__await(reader));
+                }
+            }
+            catch (e_2_1) { e_2 = { error: e_2_1 }; }
+            finally {
+                try {
+                    if (_d && !_d.done && (_a = _c.return)) yield tslib_1.__await(_a.call(_c));
+                }
+                finally { if (e_2) throw e_2.error; }
+            }
+            if (reader)
+                return yield tslib_1.__await(void 0);
+        }
+        catch (_e) {
+            readers = null;
+        }
+        if (!readers) {
+            yield tslib_1.__await(json.closed);
+            if (source instanceof fs.ReadStream) {
+                source.close();
+            }
+            // If the data in the `json` ByteQueue parses to JSON, then assume it's Arrow JSON from a file or stdin
+            try {
+                try {
+                    for (var _f = tslib_1.__asyncValues(Arrow_node_js_1.RecordBatchReader.readAll((0, json_bignum_1.parse)(yield tslib_1.__await(json.toString())))), _g; _g = yield tslib_1.__await(_f.next()), !_g.done;) {
+                        reader = _g.value;
+                        reader && (yield yield tslib_1.__await(reader));
+                    }
+                }
+                catch (e_3_1) { e_3 = { error: e_3_1 }; }
+                finally {
+                    try {
+                        if (_g && !_g.done && (_b = _f.return)) yield tslib_1.__await(_b.call(_f));
+                    }
+                    finally { if (e_3) throw e_3.error; }
+                }
+            }
+            catch (_h) {
+                readers = null;
+            }
+        }
+    });
+}
+function batchesToString(state, schema) {
+    let rowId = 0;
+    let batchId = -1;
+    let maxColWidths = [10];
+    const { hr, sep, metadata } = state;
+    const header = ['row_id', ...schema.fields.map((f) => `${f}`)].map(val => (0, pretty_js_1.valueToString)(val));
+    state.maxColWidths = header.map((x, i) => Math.max(maxColWidths[i] || 0, x.length));
+    return new stream.Transform({
+        encoding: 'utf8',
+        writableObjectMode: true,
+        readableObjectMode: false,
+        final(cb) {
+            // if there were no batches, then print the Schema, and metadata
+            if (batchId === -1) {
+                hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n\n`);
+                this.push(`${formatRow(header, maxColWidths, sep)}\n`);
+                if (metadata && schema.metadata.size > 0) {
+                    this.push(`metadata:\n${formatMetadata(schema.metadata)}\n`);
+                }
+            }
+            hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n\n`);
+            cb();
+        },
+        transform(batch, _enc, cb) {
+            var _a;
+            batch = !((_a = state.schema) === null || _a === void 0 ? void 0 : _a.length) ? batch : batch.select(state.schema);
+            if (state.closed) {
+                return cb(undefined, null);
+            }
+            // Pass one to convert to strings and count max column widths
+            state.maxColWidths = measureColumnWidths(rowId, batch, header.map((x, i) => Math.max(maxColWidths[i] || 0, x.length)));
+            // If this is the first batch in a stream, print a top horizontal rule, schema metadata, and
+            if (++batchId === 0) {
+                hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n`);
+                if (metadata && batch.schema.metadata.size > 0) {
+                    this.push(`metadata:\n${formatMetadata(batch.schema.metadata)}\n`);
+                    hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n`);
+                }
+                if (batch.numRows <= 0 || batch.numCols <= 0) {
+                    this.push(`${formatRow(header, maxColWidths = state.maxColWidths, sep)}\n`);
+                }
+            }
+            if (batch.numRows > 0 && batch.numCols > 0) {
+                // If any of the column widths changed, print the header again
+                if (rowId % 350 !== 0 && JSON.stringify(state.maxColWidths) !== JSON.stringify(maxColWidths)) {
+                    this.push(`${formatRow(header, state.maxColWidths, sep)}\n`);
+                }
+                maxColWidths = state.maxColWidths;
+                for (const row of batch) {
+                    if (state.closed) {
+                        break;
+                    }
+                    else if (!row) {
+                        continue;
+                    }
+                    if (rowId % 350 === 0) {
+                        this.push(`${formatRow(header, maxColWidths, sep)}\n`);
+                    }
+                    this.push(`${formatRow([rowId++, ...row.toArray()].map(v => (0, pretty_js_1.valueToString)(v)), maxColWidths, sep)}\n`);
+                }
+            }
+            cb();
+        }
+    });
+}
+function horizontalRule(maxColWidths, hr = '', sep = ' | ') {
+    return ` ${(0, pad_left_1.default)('', maxColWidths.reduce((x, y) => x + y, -2 + maxColWidths.length * sep.length), hr)}`;
+}
+function formatRow(row = [], maxColWidths = [], sep = ' | ') {
+    return `${row.map((x, j) => (0, pad_left_1.default)(x, maxColWidths[j])).join(sep)}`;
+}
+function formatMetadataValue(value = '') {
+    let parsed = value;
+    try {
+        parsed = JSON.stringify(JSON.parse(value), null, 2);
+    }
+    catch (_a) {
+        parsed = value;
+    }
+    return (0, pretty_js_1.valueToString)(parsed).split('\n').join('\n  ');
+}
+function formatMetadata(metadata) {
+    return [...metadata].map(([key, val]) => `  ${key}: ${formatMetadataValue(val)}`).join(',  \n');
+}
+function measureColumnWidths(rowId, batch, maxColWidths = []) {
+    let val, j = 0;
+    for (const row of batch) {
+        if (!row) {
+            continue;
+        }
+        maxColWidths[j = 0] = Math.max(maxColWidths[0] || 0, (`${rowId++}`).length);
+        for (val of row) {
+            if (val && typedArrayElementWidths.has(val.constructor) && (typeof val[Symbol.toPrimitive] !== 'function')) {
+                // If we're printing a column of TypedArrays, ensure the column is wide enough to accommodate
+                // the widest possible element for a given byte size, since JS omits leading zeroes. For example:
+                // 1 |  [1137743649,2170567488,244696391,2122556476]
+                // 2 |                                          null
+                // 3 |   [637174007,2142281880,961736230,2912449282]
+                // 4 |    [1035112265,21832886,412842672,2207710517]
+                // 5 |                                          null
+                // 6 |                                          null
+                // 7 |     [2755142991,4192423256,2994359,467878370]
+                const elementWidth = typedArrayElementWidths.get(val.constructor);
+                maxColWidths[j + 1] = Math.max(maxColWidths[j + 1] || 0, 2 + // brackets on each end
+                    (val.length - 1) + // commas between elements
+                    (val.length * elementWidth) // width of stringified 2^N-1
+                );
+            }
+            else {
+                maxColWidths[j + 1] = Math.max(maxColWidths[j + 1] || 0, (0, pretty_js_1.valueToString)(val).length);
+            }
+            ++j;
+        }
+    }
+    return maxColWidths;
+}
+// Measure the stringified representation of 2^N-1 for each TypedArray variant
+const typedArrayElementWidths = (() => {
+    const maxElementWidth = (ArrayType) => {
+        const octets = Array.from({ length: ArrayType.BYTES_PER_ELEMENT - 1 }, _ => 255);
+        return `${new ArrayType(new Uint8Array([...octets, 254]).buffer)[0]}`.length;
+    };
+    return new Map([
+        [Int8Array, maxElementWidth(Int8Array)],
+        [Int16Array, maxElementWidth(Int16Array)],
+        [Int32Array, maxElementWidth(Int32Array)],
+        [Uint8Array, maxElementWidth(Uint8Array)],
+        [Uint16Array, maxElementWidth(Uint16Array)],
+        [Uint32Array, maxElementWidth(Uint32Array)],
+        [Float32Array, maxElementWidth(Float32Array)],
+        [Float64Array, maxElementWidth(Float64Array)],
+        [Uint8ClampedArray, maxElementWidth(Uint8ClampedArray)]
+    ]);
+})();
+function cliOpts() {
+    return [
+        {
+            type: String,
+            name: 'schema', alias: 's',
+            optional: true, multiple: true,
+            typeLabel: '{underline columns}',
+            description: 'A space-delimited list of column names'
+        },
+        {
+            type: String,
+            name: 'file', alias: 'f',
+            optional: true, multiple: true,
+            description: 'The Arrow file to read'
+        },
+        {
+            type: String,
+            name: 'sep', optional: true, default: ' | ',
+            description: 'The column separator character (default: " | ")'
+        },
+        {
+            type: String,
+            name: 'hr', optional: true, default: '',
+            description: 'The horizontal border character (default: "")'
+        },
+        {
+            type: Boolean,
+            name: 'metadata', alias: 'm',
+            optional: true, default: false,
+            description: 'Flag to print Schema metadata (default: false)'
+        },
+        {
+            type: Boolean,
+            name: 'help', optional: true, default: false,
+            description: 'Print this usage guide.'
+        }
+    ];
+}
+function print_usage() {
+    console.log((0, command_line_usage_1.default)([
+        {
+            header: 'arrow2csv',
+            content: 'Print a CSV from an Arrow file'
+        },
+        {
+            header: 'Synopsis',
+            content: [
+                '$ arrow2csv {underline file.arrow} [{bold --schema} column_name ...]',
+                '$ arrow2csv [{bold --schema} column_name ...] [{bold --file} {underline file.arrow}]',
+                '$ arrow2csv {bold -s} column_1 {bold -s} column_2 [{bold -f} {underline file.arrow}]',
+                '$ arrow2csv [{bold --help}]'
+            ]
+        },
+        {
+            header: 'Options',
+            optionList: cliOpts()
+        },
+        {
+            header: 'Example',
+            content: [
+                '$ arrow2csv --schema foo baz --sep " , " -f simple.arrow',
+                '>   "row_id", "foo: Int32", "baz: Utf8"',
+                '>          0,            1,        "aa"',
+                '>          1,         null,        null',
+                '>          2,            3,        null',
+                '>          3,            4,       "bbb"',
+                '>          4,            5,      "cccc"',
+            ]
+        }
+    ]));
+    return 1;
+}
+
+//# sourceMappingURL=arrow2csv.js.map
diff --git a/igv_component/node_modules/apache-arrow/bin/src/bin/arrow2csv.ts b/igv_component/node_modules/apache-arrow/bin/src/bin/arrow2csv.ts
new file mode 100644
index 0000000000000000000000000000000000000000..eae7f5805c41c626fd3602f695799ca85c800349
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/bin/src/bin/arrow2csv.ts
@@ -0,0 +1,338 @@
+#! /usr/bin/env node
+
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+/* eslint-disable unicorn/no-array-for-each */
+
+import * as fs from 'fs';
+import * as stream from 'stream';
+import { valueToString } from '../util/pretty.js';
+import { Schema, RecordBatch, RecordBatchReader, AsyncByteQueue } from '../Arrow.node.js';
+
+import commandLineUsage from 'command-line-usage';
+import commandLineArgs from 'command-line-args';
+import padLeft from 'pad-left';
+// @ts-ignore
+import { parse as bignumJSONParse } from 'json-bignum';
+
+const argv = commandLineArgs(cliOpts(), { partial: true });
+const files = argv.help ? [] : [...(argv.file || []), ...(argv._unknown || [])].filter(Boolean);
+
+const state = { ...argv, closed: false, maxColWidths: [10] };
+
+type ToStringState = {
+    hr?: string;
+    sep?: string;
+    schema?: any;
+    closed?: boolean;
+    metadata?: boolean;
+    maxColWidths: number[];
+};
+
+(async () => {
+
+    const sources = argv.help ? [] : [
+        ...files.map((file) => () => fs.createReadStream(file)),
+        ...(process.stdin.isTTY ? [] : [() => process.stdin])
+    ].filter(Boolean) as (() => NodeJS.ReadableStream)[];
+
+    let reader: RecordBatchReader | null;
+    let hasReaders = false;
+
+    for (const source of sources) {
+        if (state.closed) { break; }
+        for await (reader of recordBatchReaders(source)) {
+            hasReaders = true;
+            const transformToString = batchesToString(state, reader.schema);
+            await pipeTo(
+                reader.pipe(transformToString),
+                process.stdout, { end: false }
+            ).catch(() => state.closed = true); // Handle EPIPE errors
+        }
+        if (state.closed) { break; }
+    }
+
+    return hasReaders ? 0 : print_usage();
+})()
+    .then((x) => +x || 0, (err) => {
+        if (err) {
+            console.error(`${err?.stack || err}`);
+        }
+        return process.exitCode || 1;
+    }).then((code) => process.exit(code));
+
+function pipeTo(source: NodeJS.ReadableStream, sink: NodeJS.WritableStream, opts?: { end: boolean }) {
+    return new Promise((resolve, reject) => {
+
+        source.on('end', onEnd).pipe(sink, opts).on('error', onErr);
+
+        function onEnd() { done(undefined, resolve); }
+        function onErr(err: any) { done(err, reject); }
+        function done(e: any, cb: (e?: any) => void) {
+            source.removeListener('end', onEnd);
+            sink.removeListener('error', onErr);
+            cb(e);
+        }
+    });
+}
+
+async function* recordBatchReaders(createSourceStream: () => NodeJS.ReadableStream): AsyncGenerator<RecordBatchReader, void, void> {
+
+    const json = new AsyncByteQueue();
+    const stream = new AsyncByteQueue();
+    const source = createSourceStream();
+    let reader: RecordBatchReader | null = null;
+    let readers: AsyncIterable<RecordBatchReader> | null = null;
+    // tee the input source, just in case it's JSON
+    source.on('end', () => [stream, json].forEach((y) => y.close()))
+        .on('data', (x) => [stream, json].forEach((y) => y.write(x)))
+        .on('error', (e) => [stream, json].forEach((y) => y.abort(e)));
+
+    try {
+        for await (reader of RecordBatchReader.readAll(stream)) {
+            reader && (yield reader);
+        }
+        if (reader) return;
+    } catch { readers = null; }
+
+    if (!readers) {
+        await json.closed;
+        if (source instanceof fs.ReadStream) { source.close(); }
+        // If the data in the `json` ByteQueue parses to JSON, then assume it's Arrow JSON from a file or stdin
+        try {
+            for await (reader of RecordBatchReader.readAll(bignumJSONParse(await json.toString()))) {
+                reader && (yield reader);
+            }
+        } catch { readers = null; }
+    }
+}
+
+function batchesToString(state: ToStringState, schema: Schema) {
+
+    let rowId = 0;
+    let batchId = -1;
+    let maxColWidths = [10];
+    const { hr, sep, metadata } = state;
+
+    const header = ['row_id', ...schema.fields.map((f) => `${f}`)].map(val => valueToString(val));
+
+    state.maxColWidths = header.map((x, i) => Math.max(maxColWidths[i] || 0, x.length));
+
+    return new stream.Transform({
+        encoding: 'utf8',
+        writableObjectMode: true,
+        readableObjectMode: false,
+        final(cb: (error?: Error | null) => void) {
+            // if there were no batches, then print the Schema, and metadata
+            if (batchId === -1) {
+                hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n\n`);
+                this.push(`${formatRow(header, maxColWidths, sep)}\n`);
+                if (metadata && schema.metadata.size > 0) {
+                    this.push(`metadata:\n${formatMetadata(schema.metadata)}\n`);
+                }
+            }
+            hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n\n`);
+            cb();
+        },
+        transform(batch: RecordBatch, _enc: string, cb: (error?: Error, data?: any) => void) {
+
+            batch = !state.schema?.length ? batch : batch.select(state.schema);
+
+            if (state.closed) { return cb(undefined, null); }
+
+            // Pass one to convert to strings and count max column widths
+            state.maxColWidths = measureColumnWidths(rowId, batch, header.map((x, i) => Math.max(maxColWidths[i] || 0, x.length)));
+
+            // If this is the first batch in a stream, print a top horizontal rule, schema metadata, and
+            if (++batchId === 0) {
+                hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n`);
+                if (metadata && batch.schema.metadata.size > 0) {
+                    this.push(`metadata:\n${formatMetadata(batch.schema.metadata)}\n`);
+                    hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n`);
+                }
+                if (batch.numRows <= 0 || batch.numCols <= 0) {
+                    this.push(`${formatRow(header, maxColWidths = state.maxColWidths, sep)}\n`);
+                }
+            }
+
+            if (batch.numRows > 0 && batch.numCols > 0) {
+                // If any of the column widths changed, print the header again
+                if (rowId % 350 !== 0 && JSON.stringify(state.maxColWidths) !== JSON.stringify(maxColWidths)) {
+                    this.push(`${formatRow(header, state.maxColWidths, sep)}\n`);
+                }
+                maxColWidths = state.maxColWidths;
+                for (const row of batch) {
+                    if (state.closed) { break; } else if (!row) { continue; }
+                    if (rowId % 350 === 0) {
+                        this.push(`${formatRow(header, maxColWidths, sep)}\n`);
+                    }
+                    this.push(`${formatRow([rowId++, ...row.toArray()].map(v => valueToString(v)), maxColWidths, sep)}\n`);
+                }
+            }
+            cb();
+        }
+    });
+}
+
+function horizontalRule(maxColWidths: number[], hr = '', sep = ' | ') {
+    return ` ${padLeft('', maxColWidths.reduce((x, y) => x + y, -2 + maxColWidths.length * sep.length), hr)}`;
+}
+
+function formatRow(row: string[] = [], maxColWidths: number[] = [], sep = ' | ') {
+    return `${row.map((x, j) => padLeft(x, maxColWidths[j])).join(sep)}`;
+}
+
+function formatMetadataValue(value = '') {
+    let parsed = value;
+    try {
+        parsed = JSON.stringify(JSON.parse(value), null, 2);
+    } catch { parsed = value; }
+    return valueToString(parsed).split('\n').join('\n  ');
+}
+
+function formatMetadata(metadata: Map<string, string>) {
+
+    return [...metadata].map(([key, val]) =>
+        `  ${key}: ${formatMetadataValue(val)}`
+    ).join(',  \n');
+}
+
+function measureColumnWidths(rowId: number, batch: RecordBatch, maxColWidths: number[] = []) {
+    let val: any, j = 0;
+    for (const row of batch) {
+        if (!row) { continue; }
+        maxColWidths[j = 0] = Math.max(maxColWidths[0] || 0, (`${rowId++}`).length);
+        for (val of row) {
+            if (val && typedArrayElementWidths.has(val.constructor) && (typeof val[Symbol.toPrimitive] !== 'function')) {
+                // If we're printing a column of TypedArrays, ensure the column is wide enough to accommodate
+                // the widest possible element for a given byte size, since JS omits leading zeroes. For example:
+                // 1 |  [1137743649,2170567488,244696391,2122556476]
+                // 2 |                                          null
+                // 3 |   [637174007,2142281880,961736230,2912449282]
+                // 4 |    [1035112265,21832886,412842672,2207710517]
+                // 5 |                                          null
+                // 6 |                                          null
+                // 7 |     [2755142991,4192423256,2994359,467878370]
+                const elementWidth = typedArrayElementWidths.get(val.constructor)!;
+
+                maxColWidths[j + 1] = Math.max(maxColWidths[j + 1] || 0,
+                    2 + // brackets on each end
+                    (val.length - 1) + // commas between elements
+                    (val.length * elementWidth) // width of stringified 2^N-1
+                );
+            } else {
+                maxColWidths[j + 1] = Math.max(maxColWidths[j + 1] || 0, valueToString(val).length);
+            }
+            ++j;
+        }
+    }
+    return maxColWidths;
+}
+
+// Measure the stringified representation of 2^N-1 for each TypedArray variant
+const typedArrayElementWidths = (() => {
+    const maxElementWidth = (ArrayType: any) => {
+        const octets = Array.from({ length: ArrayType.BYTES_PER_ELEMENT - 1 }, _ => 255);
+        return `${new ArrayType(new Uint8Array([...octets, 254]).buffer)[0]}`.length;
+    };
+    return new Map<any, number>([
+        [Int8Array, maxElementWidth(Int8Array)],
+        [Int16Array, maxElementWidth(Int16Array)],
+        [Int32Array, maxElementWidth(Int32Array)],
+        [Uint8Array, maxElementWidth(Uint8Array)],
+        [Uint16Array, maxElementWidth(Uint16Array)],
+        [Uint32Array, maxElementWidth(Uint32Array)],
+        [Float32Array, maxElementWidth(Float32Array)],
+        [Float64Array, maxElementWidth(Float64Array)],
+        [Uint8ClampedArray, maxElementWidth(Uint8ClampedArray)]
+    ]);
+})();
+
+function cliOpts() {
+    return [
+        {
+            type: String,
+            name: 'schema', alias: 's',
+            optional: true, multiple: true,
+            typeLabel: '{underline columns}',
+            description: 'A space-delimited list of column names'
+        },
+        {
+            type: String,
+            name: 'file', alias: 'f',
+            optional: true, multiple: true,
+            description: 'The Arrow file to read'
+        },
+        {
+            type: String,
+            name: 'sep', optional: true, default: ' | ',
+            description: 'The column separator character (default: " | ")'
+        },
+        {
+            type: String,
+            name: 'hr', optional: true, default: '',
+            description: 'The horizontal border character (default: "")'
+        },
+        {
+            type: Boolean,
+            name: 'metadata', alias: 'm',
+            optional: true, default: false,
+            description: 'Flag to print Schema metadata (default: false)'
+        },
+        {
+            type: Boolean,
+            name: 'help', optional: true, default: false,
+            description: 'Print this usage guide.'
+        }
+    ];
+}
+
+function print_usage() {
+    console.log(commandLineUsage([
+        {
+            header: 'arrow2csv',
+            content: 'Print a CSV from an Arrow file'
+        },
+        {
+            header: 'Synopsis',
+            content: [
+                '$ arrow2csv {underline file.arrow} [{bold --schema} column_name ...]',
+                '$ arrow2csv [{bold --schema} column_name ...] [{bold --file} {underline file.arrow}]',
+                '$ arrow2csv {bold -s} column_1 {bold -s} column_2 [{bold -f} {underline file.arrow}]',
+                '$ arrow2csv [{bold --help}]'
+            ]
+        },
+        {
+            header: 'Options',
+            optionList: cliOpts()
+        },
+        {
+            header: 'Example',
+            content: [
+                '$ arrow2csv --schema foo baz --sep " , " -f simple.arrow',
+                '>   "row_id", "foo: Int32", "baz: Utf8"',
+                '>          0,            1,        "aa"',
+                '>          1,         null,        null',
+                '>          2,            3,        null',
+                '>          3,            4,       "bbb"',
+                '>          4,            5,      "cccc"',
+            ]
+        }
+    ]));
+    return 1;
+}
diff --git a/igv_component/node_modules/apache-arrow/builder.d.ts b/igv_component/node_modules/apache-arrow/builder.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..19c634f31433d047edc5d4b3e7837134e0c0a2c0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder.d.ts
@@ -0,0 +1,220 @@
+import { Vector } from './vector.js';
+import { Data } from './data.js';
+import { DataType, Float, Int, Decimal, FixedSizeBinary, Date_, Time, Timestamp, Interval, Utf8, Binary, List, Map_ } from './type.js';
+import { BufferBuilder, BitmapBufferBuilder, DataBufferBuilder, OffsetsBufferBuilder } from './builder/buffer.js';
+/**
+ * A set of options required to create a `Builder` instance for a given `DataType`.
+ * @see {@link Builder}
+ */
+export interface BuilderOptions<T extends DataType = any, TNull = any> {
+    type: T;
+    nullValues?: TNull[] | ReadonlyArray<TNull> | null;
+    children?: {
+        [key: string]: BuilderOptions;
+    } | BuilderOptions[];
+}
+/**
+ * An abstract base class for types that construct Arrow Vectors from arbitrary JavaScript values.
+ *
+ * A `Builder` is responsible for writing arbitrary JavaScript values
+ * to ArrayBuffers and/or child Builders according to the Arrow specification
+ * for each DataType, creating or resizing the underlying ArrayBuffers as necessary.
+ *
+ * The `Builder` for each Arrow `DataType` handles converting and appending
+ * values for a given `DataType`. The high-level {@link makeBuilder `makeBuilder()`} convenience
+ * method creates the specific `Builder` subclass for the supplied `DataType`.
+ *
+ * Once created, `Builder` instances support both appending values to the end
+ * of the `Builder`, and random-access writes to specific indices
+ * (`Builder.prototype.append(value)` is a convenience method for
+ * `builder.set(builder.length, value)`). Appending or setting values beyond the
+ * Builder's current length may cause the builder to grow its underlying buffers
+ * or child Builders (if applicable) to accommodate the new values.
+ *
+ * After enough values have been written to a `Builder`, `Builder.prototype.flush()`
+ * will commit the values to the underlying ArrayBuffers (or child Builders). The
+ * internal Builder state will be reset, and an instance of `Data<T>` is returned.
+ * Alternatively, `Builder.prototype.toVector()` will flush the `Builder` and return
+ * an instance of `Vector<T>` instead.
+ *
+ * When there are no more values to write, use `Builder.prototype.finish()` to
+ * finalize the `Builder`. This does not reset the internal state, so it is
+ * necessary to call `Builder.prototype.flush()` or `toVector()` one last time
+ * if there are still values queued to be flushed.
+ *
+ * Note: calling `Builder.prototype.finish()` is required when using a `DictionaryBuilder`,
+ * because this is when it flushes the values that have been enqueued in its internal
+ * dictionary's `Builder`, and creates the `dictionaryVector` for the `Dictionary` `DataType`.
+ *
+ * @example
+ * ```ts
+ * import { Builder, Utf8 } from 'apache-arrow';
+ *
+ * const utf8Builder = makeBuilder({
+ *     type: new Utf8(),
+ *     nullValues: [null, 'n/a']
+ * });
+ *
+ * utf8Builder
+ *     .append('hello')
+ *     .append('n/a')
+ *     .append('world')
+ *     .append(null);
+ *
+ * const utf8Vector = utf8Builder.finish().toVector();
+ *
+ * console.log(utf8Vector.toJSON());
+ * // > ["hello", null, "world", null]
+ * ```
+ *
+ * @typeparam T The `DataType` of this `Builder`.
+ * @typeparam TNull The type(s) of values which will be considered null-value sentinels.
+ */
+export declare abstract class Builder<T extends DataType = any, TNull = any> {
+    /** @nocollapse */
+    static throughNode<T extends DataType = any, TNull = any>(options: import('./io/node/builder').BuilderDuplexOptions<T, TNull>): import('stream').Duplex;
+    /** @nocollapse */
+    static throughDOM<T extends DataType = any, TNull = any>(options: import('./io/whatwg/builder').BuilderTransformOptions<T, TNull>): import('./io/whatwg/builder').BuilderTransform<T, TNull>;
+    /**
+     * Construct a builder with the given Arrow DataType with optional null values,
+     * which will be interpreted as "null" when set or appended to the `Builder`.
+     * @param {{ type: T, nullValues?: any[] }} options A `BuilderOptions` object used to create this `Builder`.
+     */
+    constructor({ 'type': type, 'nullValues': nulls }: BuilderOptions<T, TNull>);
+    /**
+     * The Builder's `DataType` instance.
+     * @readonly
+     */
+    type: T;
+    /**
+     * The number of values written to the `Builder` that haven't been flushed yet.
+     * @readonly
+     */
+    length: number;
+    /**
+     * A boolean indicating whether `Builder.prototype.finish()` has been called on this `Builder`.
+     * @readonly
+     */
+    finished: boolean;
+    /**
+     * The number of elements in the underlying values TypedArray that
+     * represent a single logical element, determined by this Builder's
+     * `DataType`. This is 1 for most types, but is larger when the `DataType`
+     * is `Int64`, `Uint64`, `Decimal`, `DateMillisecond`, certain variants of
+     * `Interval`, `Time`, or `Timestamp`, `FixedSizeBinary`, and `FixedSizeList`.
+     * @readonly
+     */
+    readonly stride: number;
+    readonly children: Builder[];
+    /**
+     * The list of null-value sentinels for this `Builder`. When one of these values
+     * is written to the `Builder` (either via `Builder.prototype.set()` or `Builder.prototype.append()`),
+     * a 1-bit is written to this Builder's underlying null BitmapBufferBuilder.
+     * @readonly
+     */
+    readonly nullValues?: TNull[] | ReadonlyArray<TNull> | null;
+    /**
+     * Flush the `Builder` and return a `Vector<T>`.
+     * @returns {Vector<T>} A `Vector<T>` of the flushed values.
+     */
+    toVector(): Vector<T>;
+    get ArrayType(): any;
+    get nullCount(): number;
+    get numChildren(): number;
+    /**
+     * @returns The aggregate length (in bytes) of the values that have been written.
+     */
+    get byteLength(): number;
+    /**
+     * @returns The aggregate number of rows that have been reserved to write new values.
+     */
+    get reservedLength(): number;
+    /**
+     * @returns The aggregate length (in bytes) that has been reserved to write new values.
+     */
+    get reservedByteLength(): number;
+    protected _offsets: DataBufferBuilder<Int32Array>;
+    get valueOffsets(): Int32Array | null;
+    protected _values: BufferBuilder<T['TArray'], any>;
+    get values(): T["TArray"] | null;
+    protected _nulls: BitmapBufferBuilder;
+    get nullBitmap(): Uint8Array | null;
+    protected _typeIds: DataBufferBuilder<Int8Array>;
+    get typeIds(): Int8Array | null;
+    protected _isValid: (value: T['TValue'] | TNull) => boolean;
+    protected _setValue: (inst: Builder<T>, index: number, value: T['TValue']) => void;
+    /**
+     * Appends a value (or null) to this `Builder`.
+     * This is equivalent to `builder.set(builder.length, value)`.
+     * @param {T['TValue'] | TNull } value The value to append.
+     */
+    append(value: T['TValue'] | TNull): this;
+    /**
+     * Validates whether a value is valid (true), or null (false)
+     * @param {T['TValue'] | TNull } value The value to compare against null the value representations
+     */
+    isValid(value: T['TValue'] | TNull): boolean;
+    /**
+     * Write a value (or null-value sentinel) at the supplied index.
+     * If the value matches one of the null-value representations, a 1-bit is
+     * written to the null `BitmapBufferBuilder`. Otherwise, a 0 is written to
+     * the null `BitmapBufferBuilder`, and the value is passed to
+     * `Builder.prototype.setValue()`.
+     * @param {number} index The index of the value to write.
+     * @param {T['TValue'] | TNull } value The value to write at the supplied index.
+     * @returns {this} The updated `Builder` instance.
+     */
+    set(index: number, value: T['TValue'] | TNull): this;
+    /**
+     * Write a value to the underlying buffers at the supplied index, bypassing
+     * the null-value check. This is a low-level method that
+     * @param {number} index
+     * @param {T['TValue'] | TNull } value
+     */
+    setValue(index: number, value: T['TValue']): void;
+    setValid(index: number, valid: boolean): boolean;
+    addChild(child: Builder, name?: string): void;
+    /**
+     * Retrieve the child `Builder` at the supplied `index`, or null if no child
+     * exists at that index.
+     * @param {number} index The index of the child `Builder` to retrieve.
+     * @returns {Builder | null} The child Builder at the supplied index or null.
+     */
+    getChildAt<R extends DataType = any>(index: number): Builder<R> | null;
+    /**
+     * Commit all the values that have been written to their underlying
+     * ArrayBuffers, including any child Builders if applicable, and reset
+     * the internal `Builder` state.
+     * @returns A `Data<T>` of the buffers and children representing the values written.
+     */
+    flush(): Data<T>;
+    /**
+     * Finalize this `Builder`, and child builders if applicable.
+     * @returns {this} The finalized `Builder` instance.
+     */
+    finish(): this;
+    /**
+     * Clear this Builder's internal state, including child Builders if applicable, and reset the length to 0.
+     * @returns {this} The cleared `Builder` instance.
+     */
+    clear(): this;
+}
+/** @ignore */
+export declare abstract class FixedWidthBuilder<T extends Int | Float | FixedSizeBinary | Date_ | Timestamp | Time | Decimal | Interval = any, TNull = any> extends Builder<T, TNull> {
+    constructor(opts: BuilderOptions<T, TNull>);
+    setValue(index: number, value: T['TValue']): void;
+}
+/** @ignore */
+export declare abstract class VariableWidthBuilder<T extends Binary | Utf8 | List | Map_, TNull = any> extends Builder<T, TNull> {
+    protected _pendingLength: number;
+    protected _offsets: OffsetsBufferBuilder;
+    protected _pending: Map<number, any> | undefined;
+    constructor(opts: BuilderOptions<T, TNull>);
+    setValue(index: number, value: T['TValue']): void;
+    setValid(index: number, isValid: boolean): boolean;
+    clear(): this;
+    flush(): Data<T>;
+    finish(): this;
+    protected _flush(): this;
+    protected abstract _flushPending(pending: Map<number, any>, pendingLength: number): void;
+}
diff --git a/igv_component/node_modules/apache-arrow/builder.d.ts.map b/igv_component/node_modules/apache-arrow/builder.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..65aa3adfc3c0e519ab5ef21397ba1d6e3de9d67e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder.d.ts.map
@@ -0,0 +1 @@
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diff --git a/igv_component/node_modules/apache-arrow/builder.js b/igv_component/node_modules/apache-arrow/builder.js
new file mode 100644
index 0000000000000000000000000000000000000000..4f7ae04501f76f0f9d48c4a2445c76bad280b5a8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder.js
@@ -0,0 +1,338 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.VariableWidthBuilder = exports.FixedWidthBuilder = exports.Builder = void 0;
+const vector_js_1 = require("./vector.js");
+const data_js_1 = require("./data.js");
+const map_js_1 = require("./row/map.js");
+const type_js_1 = require("./type.js");
+const valid_js_1 = require("./builder/valid.js");
+const buffer_js_1 = require("./builder/buffer.js");
+/**
+ * An abstract base class for types that construct Arrow Vectors from arbitrary JavaScript values.
+ *
+ * A `Builder` is responsible for writing arbitrary JavaScript values
+ * to ArrayBuffers and/or child Builders according to the Arrow specification
+ * for each DataType, creating or resizing the underlying ArrayBuffers as necessary.
+ *
+ * The `Builder` for each Arrow `DataType` handles converting and appending
+ * values for a given `DataType`. The high-level {@link makeBuilder `makeBuilder()`} convenience
+ * method creates the specific `Builder` subclass for the supplied `DataType`.
+ *
+ * Once created, `Builder` instances support both appending values to the end
+ * of the `Builder`, and random-access writes to specific indices
+ * (`Builder.prototype.append(value)` is a convenience method for
+ * `builder.set(builder.length, value)`). Appending or setting values beyond the
+ * Builder's current length may cause the builder to grow its underlying buffers
+ * or child Builders (if applicable) to accommodate the new values.
+ *
+ * After enough values have been written to a `Builder`, `Builder.prototype.flush()`
+ * will commit the values to the underlying ArrayBuffers (or child Builders). The
+ * internal Builder state will be reset, and an instance of `Data<T>` is returned.
+ * Alternatively, `Builder.prototype.toVector()` will flush the `Builder` and return
+ * an instance of `Vector<T>` instead.
+ *
+ * When there are no more values to write, use `Builder.prototype.finish()` to
+ * finalize the `Builder`. This does not reset the internal state, so it is
+ * necessary to call `Builder.prototype.flush()` or `toVector()` one last time
+ * if there are still values queued to be flushed.
+ *
+ * Note: calling `Builder.prototype.finish()` is required when using a `DictionaryBuilder`,
+ * because this is when it flushes the values that have been enqueued in its internal
+ * dictionary's `Builder`, and creates the `dictionaryVector` for the `Dictionary` `DataType`.
+ *
+ * @example
+ * ```ts
+ * import { Builder, Utf8 } from 'apache-arrow';
+ *
+ * const utf8Builder = makeBuilder({
+ *     type: new Utf8(),
+ *     nullValues: [null, 'n/a']
+ * });
+ *
+ * utf8Builder
+ *     .append('hello')
+ *     .append('n/a')
+ *     .append('world')
+ *     .append(null);
+ *
+ * const utf8Vector = utf8Builder.finish().toVector();
+ *
+ * console.log(utf8Vector.toJSON());
+ * // > ["hello", null, "world", null]
+ * ```
+ *
+ * @typeparam T The `DataType` of this `Builder`.
+ * @typeparam TNull The type(s) of values which will be considered null-value sentinels.
+ */
+class Builder {
+    /**
+     * Construct a builder with the given Arrow DataType with optional null values,
+     * which will be interpreted as "null" when set or appended to the `Builder`.
+     * @param {{ type: T, nullValues?: any[] }} options A `BuilderOptions` object used to create this `Builder`.
+     */
+    constructor({ 'type': type, 'nullValues': nulls }) {
+        /**
+         * The number of values written to the `Builder` that haven't been flushed yet.
+         * @readonly
+         */
+        this.length = 0;
+        /**
+         * A boolean indicating whether `Builder.prototype.finish()` has been called on this `Builder`.
+         * @readonly
+         */
+        this.finished = false;
+        this.type = type;
+        this.children = [];
+        this.nullValues = nulls;
+        this.stride = (0, type_js_1.strideForType)(type);
+        this._nulls = new buffer_js_1.BitmapBufferBuilder();
+        if (nulls && nulls.length > 0) {
+            this._isValid = (0, valid_js_1.createIsValidFunction)(nulls);
+        }
+    }
+    /** @nocollapse */
+    // @ts-ignore
+    static throughNode(options) {
+        throw new Error(`"throughNode" not available in this environment`);
+    }
+    /** @nocollapse */
+    // @ts-ignore
+    static throughDOM(options) {
+        throw new Error(`"throughDOM" not available in this environment`);
+    }
+    /**
+     * Flush the `Builder` and return a `Vector<T>`.
+     * @returns {Vector<T>} A `Vector<T>` of the flushed values.
+     */
+    toVector() { return new vector_js_1.Vector([this.flush()]); }
+    get ArrayType() { return this.type.ArrayType; }
+    get nullCount() { return this._nulls.numInvalid; }
+    get numChildren() { return this.children.length; }
+    /**
+     * @returns The aggregate length (in bytes) of the values that have been written.
+     */
+    get byteLength() {
+        let size = 0;
+        const { _offsets, _values, _nulls, _typeIds, children } = this;
+        _offsets && (size += _offsets.byteLength);
+        _values && (size += _values.byteLength);
+        _nulls && (size += _nulls.byteLength);
+        _typeIds && (size += _typeIds.byteLength);
+        return children.reduce((size, child) => size + child.byteLength, size);
+    }
+    /**
+     * @returns The aggregate number of rows that have been reserved to write new values.
+     */
+    get reservedLength() {
+        return this._nulls.reservedLength;
+    }
+    /**
+     * @returns The aggregate length (in bytes) that has been reserved to write new values.
+     */
+    get reservedByteLength() {
+        let size = 0;
+        this._offsets && (size += this._offsets.reservedByteLength);
+        this._values && (size += this._values.reservedByteLength);
+        this._nulls && (size += this._nulls.reservedByteLength);
+        this._typeIds && (size += this._typeIds.reservedByteLength);
+        return this.children.reduce((size, child) => size + child.reservedByteLength, size);
+    }
+    get valueOffsets() { return this._offsets ? this._offsets.buffer : null; }
+    get values() { return this._values ? this._values.buffer : null; }
+    get nullBitmap() { return this._nulls ? this._nulls.buffer : null; }
+    get typeIds() { return this._typeIds ? this._typeIds.buffer : null; }
+    /**
+     * Appends a value (or null) to this `Builder`.
+     * This is equivalent to `builder.set(builder.length, value)`.
+     * @param {T['TValue'] | TNull } value The value to append.
+     */
+    append(value) { return this.set(this.length, value); }
+    /**
+     * Validates whether a value is valid (true), or null (false)
+     * @param {T['TValue'] | TNull } value The value to compare against null the value representations
+     */
+    isValid(value) { return this._isValid(value); }
+    /**
+     * Write a value (or null-value sentinel) at the supplied index.
+     * If the value matches one of the null-value representations, a 1-bit is
+     * written to the null `BitmapBufferBuilder`. Otherwise, a 0 is written to
+     * the null `BitmapBufferBuilder`, and the value is passed to
+     * `Builder.prototype.setValue()`.
+     * @param {number} index The index of the value to write.
+     * @param {T['TValue'] | TNull } value The value to write at the supplied index.
+     * @returns {this} The updated `Builder` instance.
+     */
+    set(index, value) {
+        if (this.setValid(index, this.isValid(value))) {
+            this.setValue(index, value);
+        }
+        return this;
+    }
+    /**
+     * Write a value to the underlying buffers at the supplied index, bypassing
+     * the null-value check. This is a low-level method that
+     * @param {number} index
+     * @param {T['TValue'] | TNull } value
+     */
+    setValue(index, value) { this._setValue(this, index, value); }
+    setValid(index, valid) {
+        this.length = this._nulls.set(index, +valid).length;
+        return valid;
+    }
+    // @ts-ignore
+    addChild(child, name = `${this.numChildren}`) {
+        throw new Error(`Cannot append children to non-nested type "${this.type}"`);
+    }
+    /**
+     * Retrieve the child `Builder` at the supplied `index`, or null if no child
+     * exists at that index.
+     * @param {number} index The index of the child `Builder` to retrieve.
+     * @returns {Builder | null} The child Builder at the supplied index or null.
+     */
+    getChildAt(index) {
+        return this.children[index] || null;
+    }
+    /**
+     * Commit all the values that have been written to their underlying
+     * ArrayBuffers, including any child Builders if applicable, and reset
+     * the internal `Builder` state.
+     * @returns A `Data<T>` of the buffers and children representing the values written.
+     */
+    flush() {
+        let data;
+        let typeIds;
+        let nullBitmap;
+        let valueOffsets;
+        const { type, length, nullCount, _typeIds, _offsets, _values, _nulls } = this;
+        if (typeIds = _typeIds === null || _typeIds === void 0 ? void 0 : _typeIds.flush(length)) { // Unions
+            // DenseUnions
+            valueOffsets = _offsets === null || _offsets === void 0 ? void 0 : _offsets.flush(length);
+        }
+        else if (valueOffsets = _offsets === null || _offsets === void 0 ? void 0 : _offsets.flush(length)) { // Variable-width primitives (Binary, Utf8), and Lists
+            // Binary, Utf8
+            data = _values === null || _values === void 0 ? void 0 : _values.flush(_offsets.last());
+        }
+        else { // Fixed-width primitives (Int, Float, Decimal, Time, Timestamp, and Interval)
+            data = _values === null || _values === void 0 ? void 0 : _values.flush(length);
+        }
+        if (nullCount > 0) {
+            nullBitmap = _nulls === null || _nulls === void 0 ? void 0 : _nulls.flush(length);
+        }
+        const children = this.children.map((child) => child.flush());
+        this.clear();
+        return (0, data_js_1.makeData)({
+            type, length, nullCount,
+            children, 'child': children[0],
+            data, typeIds, nullBitmap, valueOffsets,
+        });
+    }
+    /**
+     * Finalize this `Builder`, and child builders if applicable.
+     * @returns {this} The finalized `Builder` instance.
+     */
+    finish() {
+        this.finished = true;
+        for (const child of this.children)
+            child.finish();
+        return this;
+    }
+    /**
+     * Clear this Builder's internal state, including child Builders if applicable, and reset the length to 0.
+     * @returns {this} The cleared `Builder` instance.
+     */
+    clear() {
+        var _a, _b, _c, _d;
+        this.length = 0;
+        (_a = this._nulls) === null || _a === void 0 ? void 0 : _a.clear();
+        (_b = this._values) === null || _b === void 0 ? void 0 : _b.clear();
+        (_c = this._offsets) === null || _c === void 0 ? void 0 : _c.clear();
+        (_d = this._typeIds) === null || _d === void 0 ? void 0 : _d.clear();
+        for (const child of this.children)
+            child.clear();
+        return this;
+    }
+}
+exports.Builder = Builder;
+Builder.prototype.length = 1;
+Builder.prototype.stride = 1;
+Builder.prototype.children = null;
+Builder.prototype.finished = false;
+Builder.prototype.nullValues = null;
+Builder.prototype._isValid = () => true;
+/** @ignore */
+class FixedWidthBuilder extends Builder {
+    constructor(opts) {
+        super(opts);
+        this._values = new buffer_js_1.DataBufferBuilder(new this.ArrayType(0), this.stride);
+    }
+    setValue(index, value) {
+        const values = this._values;
+        values.reserve(index - values.length + 1);
+        return super.setValue(index, value);
+    }
+}
+exports.FixedWidthBuilder = FixedWidthBuilder;
+/** @ignore */
+class VariableWidthBuilder extends Builder {
+    constructor(opts) {
+        super(opts);
+        this._pendingLength = 0;
+        this._offsets = new buffer_js_1.OffsetsBufferBuilder();
+    }
+    setValue(index, value) {
+        const pending = this._pending || (this._pending = new Map());
+        const current = pending.get(index);
+        current && (this._pendingLength -= current.length);
+        this._pendingLength += (value instanceof map_js_1.MapRow) ? value[map_js_1.kKeys].length : value.length;
+        pending.set(index, value);
+    }
+    setValid(index, isValid) {
+        if (!super.setValid(index, isValid)) {
+            (this._pending || (this._pending = new Map())).set(index, undefined);
+            return false;
+        }
+        return true;
+    }
+    clear() {
+        this._pendingLength = 0;
+        this._pending = undefined;
+        return super.clear();
+    }
+    flush() {
+        this._flush();
+        return super.flush();
+    }
+    finish() {
+        this._flush();
+        return super.finish();
+    }
+    _flush() {
+        const pending = this._pending;
+        const pendingLength = this._pendingLength;
+        this._pendingLength = 0;
+        this._pending = undefined;
+        if (pending && pending.size > 0) {
+            this._flushPending(pending, pendingLength);
+        }
+        return this;
+    }
+}
+exports.VariableWidthBuilder = VariableWidthBuilder;
+
+//# sourceMappingURL=builder.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder.js.map b/igv_component/node_modules/apache-arrow/builder.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..cbaa9deee2db3877aba644a37b5ac45be403e854
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder.mjs b/igv_component/node_modules/apache-arrow/builder.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..6891e9d8a1a54cfb8f27c4292cfc7cadbd8c711f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder.mjs
@@ -0,0 +1,332 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Vector } from './vector.mjs';
+import { makeData } from './data.mjs';
+import { MapRow, kKeys } from './row/map.mjs';
+import { strideForType, } from './type.mjs';
+import { createIsValidFunction } from './builder/valid.mjs';
+import { BitmapBufferBuilder, DataBufferBuilder, OffsetsBufferBuilder } from './builder/buffer.mjs';
+/**
+ * An abstract base class for types that construct Arrow Vectors from arbitrary JavaScript values.
+ *
+ * A `Builder` is responsible for writing arbitrary JavaScript values
+ * to ArrayBuffers and/or child Builders according to the Arrow specification
+ * for each DataType, creating or resizing the underlying ArrayBuffers as necessary.
+ *
+ * The `Builder` for each Arrow `DataType` handles converting and appending
+ * values for a given `DataType`. The high-level {@link makeBuilder `makeBuilder()`} convenience
+ * method creates the specific `Builder` subclass for the supplied `DataType`.
+ *
+ * Once created, `Builder` instances support both appending values to the end
+ * of the `Builder`, and random-access writes to specific indices
+ * (`Builder.prototype.append(value)` is a convenience method for
+ * `builder.set(builder.length, value)`). Appending or setting values beyond the
+ * Builder's current length may cause the builder to grow its underlying buffers
+ * or child Builders (if applicable) to accommodate the new values.
+ *
+ * After enough values have been written to a `Builder`, `Builder.prototype.flush()`
+ * will commit the values to the underlying ArrayBuffers (or child Builders). The
+ * internal Builder state will be reset, and an instance of `Data<T>` is returned.
+ * Alternatively, `Builder.prototype.toVector()` will flush the `Builder` and return
+ * an instance of `Vector<T>` instead.
+ *
+ * When there are no more values to write, use `Builder.prototype.finish()` to
+ * finalize the `Builder`. This does not reset the internal state, so it is
+ * necessary to call `Builder.prototype.flush()` or `toVector()` one last time
+ * if there are still values queued to be flushed.
+ *
+ * Note: calling `Builder.prototype.finish()` is required when using a `DictionaryBuilder`,
+ * because this is when it flushes the values that have been enqueued in its internal
+ * dictionary's `Builder`, and creates the `dictionaryVector` for the `Dictionary` `DataType`.
+ *
+ * @example
+ * ```ts
+ * import { Builder, Utf8 } from 'apache-arrow';
+ *
+ * const utf8Builder = makeBuilder({
+ *     type: new Utf8(),
+ *     nullValues: [null, 'n/a']
+ * });
+ *
+ * utf8Builder
+ *     .append('hello')
+ *     .append('n/a')
+ *     .append('world')
+ *     .append(null);
+ *
+ * const utf8Vector = utf8Builder.finish().toVector();
+ *
+ * console.log(utf8Vector.toJSON());
+ * // > ["hello", null, "world", null]
+ * ```
+ *
+ * @typeparam T The `DataType` of this `Builder`.
+ * @typeparam TNull The type(s) of values which will be considered null-value sentinels.
+ */
+export class Builder {
+    /**
+     * Construct a builder with the given Arrow DataType with optional null values,
+     * which will be interpreted as "null" when set or appended to the `Builder`.
+     * @param {{ type: T, nullValues?: any[] }} options A `BuilderOptions` object used to create this `Builder`.
+     */
+    constructor({ 'type': type, 'nullValues': nulls }) {
+        /**
+         * The number of values written to the `Builder` that haven't been flushed yet.
+         * @readonly
+         */
+        this.length = 0;
+        /**
+         * A boolean indicating whether `Builder.prototype.finish()` has been called on this `Builder`.
+         * @readonly
+         */
+        this.finished = false;
+        this.type = type;
+        this.children = [];
+        this.nullValues = nulls;
+        this.stride = strideForType(type);
+        this._nulls = new BitmapBufferBuilder();
+        if (nulls && nulls.length > 0) {
+            this._isValid = createIsValidFunction(nulls);
+        }
+    }
+    /** @nocollapse */
+    // @ts-ignore
+    static throughNode(options) {
+        throw new Error(`"throughNode" not available in this environment`);
+    }
+    /** @nocollapse */
+    // @ts-ignore
+    static throughDOM(options) {
+        throw new Error(`"throughDOM" not available in this environment`);
+    }
+    /**
+     * Flush the `Builder` and return a `Vector<T>`.
+     * @returns {Vector<T>} A `Vector<T>` of the flushed values.
+     */
+    toVector() { return new Vector([this.flush()]); }
+    get ArrayType() { return this.type.ArrayType; }
+    get nullCount() { return this._nulls.numInvalid; }
+    get numChildren() { return this.children.length; }
+    /**
+     * @returns The aggregate length (in bytes) of the values that have been written.
+     */
+    get byteLength() {
+        let size = 0;
+        const { _offsets, _values, _nulls, _typeIds, children } = this;
+        _offsets && (size += _offsets.byteLength);
+        _values && (size += _values.byteLength);
+        _nulls && (size += _nulls.byteLength);
+        _typeIds && (size += _typeIds.byteLength);
+        return children.reduce((size, child) => size + child.byteLength, size);
+    }
+    /**
+     * @returns The aggregate number of rows that have been reserved to write new values.
+     */
+    get reservedLength() {
+        return this._nulls.reservedLength;
+    }
+    /**
+     * @returns The aggregate length (in bytes) that has been reserved to write new values.
+     */
+    get reservedByteLength() {
+        let size = 0;
+        this._offsets && (size += this._offsets.reservedByteLength);
+        this._values && (size += this._values.reservedByteLength);
+        this._nulls && (size += this._nulls.reservedByteLength);
+        this._typeIds && (size += this._typeIds.reservedByteLength);
+        return this.children.reduce((size, child) => size + child.reservedByteLength, size);
+    }
+    get valueOffsets() { return this._offsets ? this._offsets.buffer : null; }
+    get values() { return this._values ? this._values.buffer : null; }
+    get nullBitmap() { return this._nulls ? this._nulls.buffer : null; }
+    get typeIds() { return this._typeIds ? this._typeIds.buffer : null; }
+    /**
+     * Appends a value (or null) to this `Builder`.
+     * This is equivalent to `builder.set(builder.length, value)`.
+     * @param {T['TValue'] | TNull } value The value to append.
+     */
+    append(value) { return this.set(this.length, value); }
+    /**
+     * Validates whether a value is valid (true), or null (false)
+     * @param {T['TValue'] | TNull } value The value to compare against null the value representations
+     */
+    isValid(value) { return this._isValid(value); }
+    /**
+     * Write a value (or null-value sentinel) at the supplied index.
+     * If the value matches one of the null-value representations, a 1-bit is
+     * written to the null `BitmapBufferBuilder`. Otherwise, a 0 is written to
+     * the null `BitmapBufferBuilder`, and the value is passed to
+     * `Builder.prototype.setValue()`.
+     * @param {number} index The index of the value to write.
+     * @param {T['TValue'] | TNull } value The value to write at the supplied index.
+     * @returns {this} The updated `Builder` instance.
+     */
+    set(index, value) {
+        if (this.setValid(index, this.isValid(value))) {
+            this.setValue(index, value);
+        }
+        return this;
+    }
+    /**
+     * Write a value to the underlying buffers at the supplied index, bypassing
+     * the null-value check. This is a low-level method that
+     * @param {number} index
+     * @param {T['TValue'] | TNull } value
+     */
+    setValue(index, value) { this._setValue(this, index, value); }
+    setValid(index, valid) {
+        this.length = this._nulls.set(index, +valid).length;
+        return valid;
+    }
+    // @ts-ignore
+    addChild(child, name = `${this.numChildren}`) {
+        throw new Error(`Cannot append children to non-nested type "${this.type}"`);
+    }
+    /**
+     * Retrieve the child `Builder` at the supplied `index`, or null if no child
+     * exists at that index.
+     * @param {number} index The index of the child `Builder` to retrieve.
+     * @returns {Builder | null} The child Builder at the supplied index or null.
+     */
+    getChildAt(index) {
+        return this.children[index] || null;
+    }
+    /**
+     * Commit all the values that have been written to their underlying
+     * ArrayBuffers, including any child Builders if applicable, and reset
+     * the internal `Builder` state.
+     * @returns A `Data<T>` of the buffers and children representing the values written.
+     */
+    flush() {
+        let data;
+        let typeIds;
+        let nullBitmap;
+        let valueOffsets;
+        const { type, length, nullCount, _typeIds, _offsets, _values, _nulls } = this;
+        if (typeIds = _typeIds === null || _typeIds === void 0 ? void 0 : _typeIds.flush(length)) { // Unions
+            // DenseUnions
+            valueOffsets = _offsets === null || _offsets === void 0 ? void 0 : _offsets.flush(length);
+        }
+        else if (valueOffsets = _offsets === null || _offsets === void 0 ? void 0 : _offsets.flush(length)) { // Variable-width primitives (Binary, Utf8), and Lists
+            // Binary, Utf8
+            data = _values === null || _values === void 0 ? void 0 : _values.flush(_offsets.last());
+        }
+        else { // Fixed-width primitives (Int, Float, Decimal, Time, Timestamp, and Interval)
+            data = _values === null || _values === void 0 ? void 0 : _values.flush(length);
+        }
+        if (nullCount > 0) {
+            nullBitmap = _nulls === null || _nulls === void 0 ? void 0 : _nulls.flush(length);
+        }
+        const children = this.children.map((child) => child.flush());
+        this.clear();
+        return makeData({
+            type, length, nullCount,
+            children, 'child': children[0],
+            data, typeIds, nullBitmap, valueOffsets,
+        });
+    }
+    /**
+     * Finalize this `Builder`, and child builders if applicable.
+     * @returns {this} The finalized `Builder` instance.
+     */
+    finish() {
+        this.finished = true;
+        for (const child of this.children)
+            child.finish();
+        return this;
+    }
+    /**
+     * Clear this Builder's internal state, including child Builders if applicable, and reset the length to 0.
+     * @returns {this} The cleared `Builder` instance.
+     */
+    clear() {
+        var _a, _b, _c, _d;
+        this.length = 0;
+        (_a = this._nulls) === null || _a === void 0 ? void 0 : _a.clear();
+        (_b = this._values) === null || _b === void 0 ? void 0 : _b.clear();
+        (_c = this._offsets) === null || _c === void 0 ? void 0 : _c.clear();
+        (_d = this._typeIds) === null || _d === void 0 ? void 0 : _d.clear();
+        for (const child of this.children)
+            child.clear();
+        return this;
+    }
+}
+Builder.prototype.length = 1;
+Builder.prototype.stride = 1;
+Builder.prototype.children = null;
+Builder.prototype.finished = false;
+Builder.prototype.nullValues = null;
+Builder.prototype._isValid = () => true;
+/** @ignore */
+export class FixedWidthBuilder extends Builder {
+    constructor(opts) {
+        super(opts);
+        this._values = new DataBufferBuilder(new this.ArrayType(0), this.stride);
+    }
+    setValue(index, value) {
+        const values = this._values;
+        values.reserve(index - values.length + 1);
+        return super.setValue(index, value);
+    }
+}
+/** @ignore */
+export class VariableWidthBuilder extends Builder {
+    constructor(opts) {
+        super(opts);
+        this._pendingLength = 0;
+        this._offsets = new OffsetsBufferBuilder();
+    }
+    setValue(index, value) {
+        const pending = this._pending || (this._pending = new Map());
+        const current = pending.get(index);
+        current && (this._pendingLength -= current.length);
+        this._pendingLength += (value instanceof MapRow) ? value[kKeys].length : value.length;
+        pending.set(index, value);
+    }
+    setValid(index, isValid) {
+        if (!super.setValid(index, isValid)) {
+            (this._pending || (this._pending = new Map())).set(index, undefined);
+            return false;
+        }
+        return true;
+    }
+    clear() {
+        this._pendingLength = 0;
+        this._pending = undefined;
+        return super.clear();
+    }
+    flush() {
+        this._flush();
+        return super.flush();
+    }
+    finish() {
+        this._flush();
+        return super.finish();
+    }
+    _flush() {
+        const pending = this._pending;
+        const pendingLength = this._pendingLength;
+        this._pendingLength = 0;
+        this._pending = undefined;
+        if (pending && pending.size > 0) {
+            this._flushPending(pending, pendingLength);
+        }
+        return this;
+    }
+}
+
+//# sourceMappingURL=builder.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder.mjs.map b/igv_component/node_modules/apache-arrow/builder.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..f1f9dc9b38a55ed4d8690f0666d1926db8ec6ada
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/binary.d.ts b/igv_component/node_modules/apache-arrow/builder/binary.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b762912e286c4ef1d7c8314ada4fc94457bef727
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/binary.d.ts
@@ -0,0 +1,9 @@
+import { Binary } from '../type.js';
+import { VariableWidthBuilder, BuilderOptions } from '../builder.js';
+/** @ignore */
+export declare class BinaryBuilder<TNull = any> extends VariableWidthBuilder<Binary, TNull> {
+    constructor(opts: BuilderOptions<Binary, TNull>);
+    get byteLength(): number;
+    setValue(index: number, value: Uint8Array): void;
+    protected _flushPending(pending: Map<number, Uint8Array | undefined>, pendingLength: number): void;
+}
diff --git a/igv_component/node_modules/apache-arrow/builder/binary.d.ts.map b/igv_component/node_modules/apache-arrow/builder/binary.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..4bd29dc1afaee8ad84725b2b02f05f1d9ef25b86
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/binary.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/binary.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,MAAM,EAAE,MAAM,YAAY,CAAC;AAGpC,OAAO,EAAE,oBAAoB,EAAE,cAAc,EAAE,MAAM,eAAe,CAAC;AAErE,cAAc;AACd,qBAAa,aAAa,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,oBAAoB,CAAC,MAAM,EAAE,KAAK,CAAC;gBACnE,IAAI,EAAE,cAAc,CAAC,MAAM,EAAE,KAAK,CAAC;IAI/C,IAAW,UAAU,IAAI,MAAM,CAM9B;IACM,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,UAAU;IAGhD,SAAS,CAAC,aAAa,CAAC,OAAO,EAAE,GAAG,CAAC,MAAM,EAAE,UAAU,GAAG,SAAS,CAAC,EAAE,aAAa,EAAE,MAAM;CAe9F","file":"binary.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/binary.js b/igv_component/node_modules/apache-arrow/builder/binary.js
new file mode 100644
index 0000000000000000000000000000000000000000..a24961d3abc127401a1d0403fe6b96f567d94ffc
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/binary.js
@@ -0,0 +1,58 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.BinaryBuilder = void 0;
+const buffer_js_1 = require("../util/buffer.js");
+const buffer_js_2 = require("./buffer.js");
+const builder_js_1 = require("../builder.js");
+/** @ignore */
+class BinaryBuilder extends builder_js_1.VariableWidthBuilder {
+    constructor(opts) {
+        super(opts);
+        this._values = new buffer_js_2.BufferBuilder(new Uint8Array(0));
+    }
+    get byteLength() {
+        let size = this._pendingLength + (this.length * 4);
+        this._offsets && (size += this._offsets.byteLength);
+        this._values && (size += this._values.byteLength);
+        this._nulls && (size += this._nulls.byteLength);
+        return size;
+    }
+    setValue(index, value) {
+        return super.setValue(index, (0, buffer_js_1.toUint8Array)(value));
+    }
+    _flushPending(pending, pendingLength) {
+        const offsets = this._offsets;
+        const data = this._values.reserve(pendingLength).buffer;
+        let offset = 0;
+        for (const [index, value] of pending) {
+            if (value === undefined) {
+                offsets.set(index, 0);
+            }
+            else {
+                const length = value.length;
+                data.set(value, offset);
+                offsets.set(index, length);
+                offset += length;
+            }
+        }
+    }
+}
+exports.BinaryBuilder = BinaryBuilder;
+
+//# sourceMappingURL=binary.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/binary.js.map b/igv_component/node_modules/apache-arrow/builder/binary.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..9cd5db22151823e971476454c293ccda89e25264
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/binary.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/binary.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAGrB,iDAAiD;AACjD,2CAA4C;AAC5C,8CAAqE;AAErE,cAAc;AACd,MAAa,aAA2B,SAAQ,iCAAmC;IAC/E,YAAY,IAAmC;QAC3C,KAAK,CAAC,IAAI,CAAC,CAAC;QACZ,IAAI,CAAC,OAAO,GAAG,IAAI,yBAAa,CAAC,IAAI,UAAU,CAAC,CAAC,CAAC,CAAC,CAAC;IACxD,CAAC;IACD,IAAW,UAAU;QACjB,IAAI,IAAI,GAAG,IAAI,CAAC,cAAc,GAAG,CAAC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;QACnD,IAAI,CAAC,QAAQ,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,QAAQ,CAAC,UAAU,CAAC,CAAC;QACpD,IAAI,CAAC,OAAO,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,OAAO,CAAC,UAAU,CAAC,CAAC;QAClD,IAAI,CAAC,MAAM,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,MAAM,CAAC,UAAU,CAAC,CAAC;QAChD,OAAO,IAAI,CAAC;IAChB,CAAC;IACM,QAAQ,CAAC,KAAa,EAAE,KAAiB;QAC5C,OAAO,KAAK,CAAC,QAAQ,CAAC,KAAK,EAAE,IAAA,wBAAY,EAAC,KAAK,CAAC,CAAC,CAAC;IACtD,CAAC;IACS,aAAa,CAAC,OAA4C,EAAE,aAAqB;QACvF,MAAM,OAAO,GAAG,IAAI,CAAC,QAAQ,CAAC;QAC9B,MAAM,IAAI,GAAG,IAAI,CAAC,OAAO,CAAC,OAAO,CAAC,aAAa,CAAC,CAAC,MAAM,CAAC;QACxD,IAAI,MAAM,GAAG,CAAC,CAAC;QACf,KAAK,MAAM,CAAC,KAAK,EAAE,KAAK,CAAC,IAAI,OAAO,EAAE;YAClC,IAAI,KAAK,KAAK,SAAS,EAAE;gBACrB,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;aACzB;iBAAM;gBACH,MAAM,MAAM,GAAG,KAAK,CAAC,MAAM,CAAC;gBAC5B,IAAI,CAAC,GAAG,CAAC,KAAK,EAAE,MAAM,CAAC,CAAC;gBACxB,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,MAAM,CAAC,CAAC;gBAC3B,MAAM,IAAI,MAAM,CAAC;aACpB;SACJ;IACL,CAAC;CACJ;AA9BD,sCA8BC","file":"binary.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/binary.mjs b/igv_component/node_modules/apache-arrow/builder/binary.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..192d8e484803bf2a383adf897b6b4ce2b917e49c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/binary.mjs
@@ -0,0 +1,54 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { toUint8Array } from '../util/buffer.mjs';
+import { BufferBuilder } from './buffer.mjs';
+import { VariableWidthBuilder } from '../builder.mjs';
+/** @ignore */
+export class BinaryBuilder extends VariableWidthBuilder {
+    constructor(opts) {
+        super(opts);
+        this._values = new BufferBuilder(new Uint8Array(0));
+    }
+    get byteLength() {
+        let size = this._pendingLength + (this.length * 4);
+        this._offsets && (size += this._offsets.byteLength);
+        this._values && (size += this._values.byteLength);
+        this._nulls && (size += this._nulls.byteLength);
+        return size;
+    }
+    setValue(index, value) {
+        return super.setValue(index, toUint8Array(value));
+    }
+    _flushPending(pending, pendingLength) {
+        const offsets = this._offsets;
+        const data = this._values.reserve(pendingLength).buffer;
+        let offset = 0;
+        for (const [index, value] of pending) {
+            if (value === undefined) {
+                offsets.set(index, 0);
+            }
+            else {
+                const length = value.length;
+                data.set(value, offset);
+                offsets.set(index, length);
+                offset += length;
+            }
+        }
+    }
+}
+
+//# sourceMappingURL=binary.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/binary.mjs.map b/igv_component/node_modules/apache-arrow/builder/binary.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..3f27c434e56d1f54c417494dac76ed11aa4c6b59
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/binary.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/binary.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAGrB,OAAO,EAAE,YAAY,EAAE,MAAM,mBAAmB,CAAC;AACjD,OAAO,EAAE,aAAa,EAAE,MAAM,aAAa,CAAC;AAC5C,OAAO,EAAE,oBAAoB,EAAkB,MAAM,eAAe,CAAC;AAErE,cAAc;AACd,MAAM,OAAO,aAA2B,SAAQ,oBAAmC;IAC/E,YAAY,IAAmC;QAC3C,KAAK,CAAC,IAAI,CAAC,CAAC;QACZ,IAAI,CAAC,OAAO,GAAG,IAAI,aAAa,CAAC,IAAI,UAAU,CAAC,CAAC,CAAC,CAAC,CAAC;IACxD,CAAC;IACD,IAAW,UAAU;QACjB,IAAI,IAAI,GAAG,IAAI,CAAC,cAAc,GAAG,CAAC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;QACnD,IAAI,CAAC,QAAQ,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,QAAQ,CAAC,UAAU,CAAC,CAAC;QACpD,IAAI,CAAC,OAAO,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,OAAO,CAAC,UAAU,CAAC,CAAC;QAClD,IAAI,CAAC,MAAM,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,MAAM,CAAC,UAAU,CAAC,CAAC;QAChD,OAAO,IAAI,CAAC;IAChB,CAAC;IACM,QAAQ,CAAC,KAAa,EAAE,KAAiB;QAC5C,OAAO,KAAK,CAAC,QAAQ,CAAC,KAAK,EAAE,YAAY,CAAC,KAAK,CAAC,CAAC,CAAC;IACtD,CAAC;IACS,aAAa,CAAC,OAA4C,EAAE,aAAqB;QACvF,MAAM,OAAO,GAAG,IAAI,CAAC,QAAQ,CAAC;QAC9B,MAAM,IAAI,GAAG,IAAI,CAAC,OAAO,CAAC,OAAO,CAAC,aAAa,CAAC,CAAC,MAAM,CAAC;QACxD,IAAI,MAAM,GAAG,CAAC,CAAC;QACf,KAAK,MAAM,CAAC,KAAK,EAAE,KAAK,CAAC,IAAI,OAAO,EAAE;YAClC,IAAI,KAAK,KAAK,SAAS,EAAE;gBACrB,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;aACzB;iBAAM;gBACH,MAAM,MAAM,GAAG,KAAK,CAAC,MAAM,CAAC;gBAC5B,IAAI,CAAC,GAAG,CAAC,KAAK,EAAE,MAAM,CAAC,CAAC;gBACxB,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,MAAM,CAAC,CAAC;gBAC3B,MAAM,IAAI,MAAM,CAAC;aACpB;SACJ;IACL,CAAC;CACJ","file":"binary.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/bool.d.ts b/igv_component/node_modules/apache-arrow/builder/bool.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..737a3702eed08ca5901eb12d105f90d92088cf1b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/bool.d.ts
@@ -0,0 +1,7 @@
+import { Bool } from '../type.js';
+import { Builder, BuilderOptions } from '../builder.js';
+/** @ignore */
+export declare class BoolBuilder<TNull = any> extends Builder<Bool, TNull> {
+    constructor(options: BuilderOptions<Bool, TNull>);
+    setValue(index: number, value: boolean): void;
+}
diff --git a/igv_component/node_modules/apache-arrow/builder/bool.d.ts.map b/igv_component/node_modules/apache-arrow/builder/bool.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..cb2266fd3a99f75e19df9c4bc401131c1baad615
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/bool.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/bool.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,IAAI,EAAE,MAAM,YAAY,CAAC;AAElC,OAAO,EAAE,OAAO,EAAE,cAAc,EAAE,MAAM,eAAe,CAAC;AAExD,cAAc;AACd,qBAAa,WAAW,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,OAAO,CAAC,IAAI,EAAE,KAAK,CAAC;gBAClD,OAAO,EAAE,cAAc,CAAC,IAAI,EAAE,KAAK,CAAC;IAIzC,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,OAAO;CAGhD","file":"bool.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/bool.js b/igv_component/node_modules/apache-arrow/builder/bool.js
new file mode 100644
index 0000000000000000000000000000000000000000..9ae0006a8c581417be920e4468668cd71f07e803
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/bool.js
@@ -0,0 +1,34 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.BoolBuilder = void 0;
+const buffer_js_1 = require("./buffer.js");
+const builder_js_1 = require("../builder.js");
+/** @ignore */
+class BoolBuilder extends builder_js_1.Builder {
+    constructor(options) {
+        super(options);
+        this._values = new buffer_js_1.BitmapBufferBuilder();
+    }
+    setValue(index, value) {
+        this._values.set(index, +value);
+    }
+}
+exports.BoolBuilder = BoolBuilder;
+
+//# sourceMappingURL=bool.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/bool.js.map b/igv_component/node_modules/apache-arrow/builder/bool.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..06ca9a63858ebfc4a5303ce5107dbb2f3909924b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/bool.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/bool.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAGrB,2CAAkD;AAClD,8CAAwD;AAExD,cAAc;AACd,MAAa,WAAyB,SAAQ,oBAAoB;IAC9D,YAAY,OAAoC;QAC5C,KAAK,CAAC,OAAO,CAAC,CAAC;QACf,IAAI,CAAC,OAAO,GAAG,IAAI,+BAAmB,EAAE,CAAC;IAC7C,CAAC;IACM,QAAQ,CAAC,KAAa,EAAE,KAAc;QACzC,IAAI,CAAC,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,CAAC,KAAK,CAAC,CAAC;IACpC,CAAC;CACJ;AARD,kCAQC","file":"bool.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/bool.mjs b/igv_component/node_modules/apache-arrow/builder/bool.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..84c55063c8ad3cc678be14c696d80d0ed76a6db4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/bool.mjs
@@ -0,0 +1,30 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { BitmapBufferBuilder } from './buffer.mjs';
+import { Builder } from '../builder.mjs';
+/** @ignore */
+export class BoolBuilder extends Builder {
+    constructor(options) {
+        super(options);
+        this._values = new BitmapBufferBuilder();
+    }
+    setValue(index, value) {
+        this._values.set(index, +value);
+    }
+}
+
+//# sourceMappingURL=bool.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/bool.mjs.map b/igv_component/node_modules/apache-arrow/builder/bool.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..eaf3648a25ba0ca54d601315e8f0e88575517a8d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/bool.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/bool.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAGrB,OAAO,EAAE,mBAAmB,EAAE,MAAM,aAAa,CAAC;AAClD,OAAO,EAAE,OAAO,EAAkB,MAAM,eAAe,CAAC;AAExD,cAAc;AACd,MAAM,OAAO,WAAyB,SAAQ,OAAoB;IAC9D,YAAY,OAAoC;QAC5C,KAAK,CAAC,OAAO,CAAC,CAAC;QACf,IAAI,CAAC,OAAO,GAAG,IAAI,mBAAmB,EAAE,CAAC;IAC7C,CAAC;IACM,QAAQ,CAAC,KAAa,EAAE,KAAc;QACzC,IAAI,CAAC,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,CAAC,KAAK,CAAC,CAAC;IACpC,CAAC;CACJ","file":"bool.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/buffer.d.ts b/igv_component/node_modules/apache-arrow/builder/buffer.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..fc58714df76a3a2d88a4330751d2c748a4ea4d36
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/buffer.d.ts
@@ -0,0 +1,49 @@
+import { TypedArray, TypedArrayConstructor, BigIntArray, BigIntArrayConstructor } from '../interfaces.js';
+/** @ignore */ declare type DataValue<T> = T extends TypedArray ? number : T extends BigIntArray ? WideValue<T> : T;
+/** @ignore */ declare type WideValue<T extends BigIntArray> = T extends BigIntArray ? bigint | Int32Array | Uint32Array : never;
+/** @ignore */ declare type ArrayCtor<T extends TypedArray | BigIntArray> = T extends TypedArray ? TypedArrayConstructor<T> : T extends BigIntArray ? BigIntArrayConstructor<T> : any;
+/** @ignore */
+export interface BufferBuilder<T extends TypedArray | BigIntArray = any, TValue = DataValue<T>> {
+    readonly offset: number;
+}
+/** @ignore */
+export declare class BufferBuilder<T extends TypedArray | BigIntArray = any, TValue = DataValue<T>> {
+    constructor(buffer: T, stride?: number);
+    buffer: T;
+    length: number;
+    readonly stride: number;
+    readonly ArrayType: ArrayCtor<T>;
+    readonly BYTES_PER_ELEMENT: number;
+    get byteLength(): number;
+    get reservedLength(): number;
+    get reservedByteLength(): number;
+    set(index: number, value: TValue): this;
+    append(value: TValue): this;
+    reserve(extra: number): this;
+    flush(length?: number): T;
+    clear(): this;
+    protected _resize(newLength: number): T;
+}
+/** @ignore */
+export declare class DataBufferBuilder<T extends TypedArray> extends BufferBuilder<T, number> {
+    last(): number;
+    get(index: number): number;
+    set(index: number, value: number): this;
+}
+/** @ignore */
+export declare class BitmapBufferBuilder extends DataBufferBuilder<Uint8Array> {
+    constructor(data?: Uint8Array);
+    numValid: number;
+    get numInvalid(): number;
+    get(idx: number): number;
+    set(idx: number, val: number): this;
+    clear(): this;
+}
+/** @ignore */
+export declare class OffsetsBufferBuilder extends DataBufferBuilder<Int32Array> {
+    constructor(data?: Int32Array);
+    append(value: number): this;
+    set(index: number, value: number): this;
+    flush(length?: number): Int32Array;
+}
+export {};
diff --git a/igv_component/node_modules/apache-arrow/builder/buffer.d.ts.map b/igv_component/node_modules/apache-arrow/builder/buffer.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..72196a49f9114de85a8be9d14b474f4fef8b15e6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/buffer.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/buffer.ts"],"names":[],"mappings":"AAkBA,OAAO,EACH,UAAU,EAAE,qBAAqB,EACjC,WAAW,EAAE,sBAAsB,EACtC,MAAM,kBAAkB,CAAC;AAE1B,cAAc,CAAC,aAAK,SAAS,CAAC,CAAC,IAAI,CAAC,SAAS,UAAU,GAAG,MAAM,GAAG,CAAC,SAAS,WAAW,GAAG,SAAS,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC;AAC5G,cAAc,CAAC,aAAK,SAAS,CAAC,CAAC,SAAS,WAAW,IAAI,CAAC,SAAS,WAAW,GAAG,MAAM,GAAG,UAAU,GAAG,WAAW,GAAG,KAAK,CAAC;AACzH,cAAc,CAAC,aAAK,SAAS,CAAC,CAAC,SAAS,UAAU,GAAG,WAAW,IAC5D,CAAC,SAAS,UAAU,GAAG,qBAAqB,CAAC,CAAC,CAAC,GAC/C,CAAC,SAAS,WAAW,GAAG,sBAAsB,CAAC,CAAC,CAAC,GACjD,GAAG,CAAC;AASR,cAAc;AACd,MAAM,WAAW,aAAa,CAAC,CAAC,SAAS,UAAU,GAAG,WAAW,GAAG,GAAG,EAAE,MAAM,GAAG,SAAS,CAAC,CAAC,CAAC;IAC1F,QAAQ,CAAC,MAAM,EAAE,MAAM,CAAC;CAC3B;AAED,cAAc;AACd,qBAAa,aAAa,CAAC,CAAC,SAAS,UAAU,GAAG,WAAW,GAAG,GAAG,EAAE,MAAM,GAAG,SAAS,CAAC,CAAC,CAAC;gBAE1E,MAAM,EAAE,CAAC,EAAE,MAAM,SAAI;IAQ1B,MAAM,EAAE,CAAC,CAAC;IACV,MAAM,EAAE,MAAM,CAAC;IACtB,SAAgB,MAAM,EAAE,MAAM,CAAC;IAC/B,SAAgB,SAAS,EAAE,SAAS,CAAC,CAAC,CAAC,CAAC;IACxC,SAAgB,iBAAiB,EAAE,MAAM,CAAC;IAE1C,IAAW,UAAU,WAEpB;IACD,IAAW,cAAc,WAA+C;IACxE,IAAW,kBAAkB,WAAqC;IAG3D,GAAG,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM;IAChC,MAAM,CAAC,KAAK,EAAE,MAAM;IACpB,OAAO,CAAC,KAAK,EAAE,MAAM;IAerB,KAAK,CAAC,MAAM,SAAc;IAM1B,KAAK;IAKZ,SAAS,CAAC,OAAO,CAAC,SAAS,EAAE,MAAM;CAGtC;AAID,cAAc;AACd,qBAAa,iBAAiB,CAAC,CAAC,SAAS,UAAU,CAAE,SAAQ,aAAa,CAAC,CAAC,EAAE,MAAM,CAAC;IAC1E,IAAI;IACJ,GAAG,CAAC,KAAK,EAAE,MAAM;IACjB,GAAG,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM;CAK1C;AAED,cAAc;AACd,qBAAa,mBAAoB,SAAQ,iBAAiB,CAAC,UAAU,CAAC;gBAEtD,IAAI,aAAoB;IAE7B,QAAQ,SAAK;IACpB,IAAW,UAAU,WAA0C;IACxD,GAAG,CAAC,GAAG,EAAE,MAAM;IACf,GAAG,CAAC,GAAG,EAAE,MAAM,EAAE,GAAG,EAAE,MAAM;IAS5B,KAAK;CAIf;AAED,cAAc;AACd,qBAAa,oBAAqB,SAAQ,iBAAiB,CAAC,UAAU,CAAC;gBACvD,IAAI,aAAoB;IAC7B,MAAM,CAAC,KAAK,EAAE,MAAM;IAGpB,GAAG,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM;IAShC,KAAK,CAAC,MAAM,SAAkB;CAMxC","file":"buffer.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/buffer.js b/igv_component/node_modules/apache-arrow/builder/buffer.js
new file mode 100644
index 0000000000000000000000000000000000000000..84e55f9fe28c6b72c0648da11998fdad639d102b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/buffer.js
@@ -0,0 +1,131 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.OffsetsBufferBuilder = exports.BitmapBufferBuilder = exports.DataBufferBuilder = exports.BufferBuilder = void 0;
+const buffer_js_1 = require("../util/buffer.js");
+/** @ignore */
+const roundLengthUpToNearest64Bytes = (len, BPE) => ((((Math.ceil(len) * BPE) + 63) & ~63) || 64) / BPE;
+/** @ignore */
+const sliceOrExtendArray = (arr, len = 0) => (arr.length >= len ? arr.subarray(0, len) : (0, buffer_js_1.memcpy)(new arr.constructor(len), arr, 0));
+/** @ignore */
+class BufferBuilder {
+    constructor(buffer, stride = 1) {
+        this.buffer = buffer;
+        this.stride = stride;
+        this.BYTES_PER_ELEMENT = buffer.BYTES_PER_ELEMENT;
+        this.ArrayType = buffer.constructor;
+        this._resize(this.length = Math.ceil(buffer.length / stride));
+    }
+    get byteLength() {
+        return Math.ceil(this.length * this.stride) * this.BYTES_PER_ELEMENT;
+    }
+    get reservedLength() { return this.buffer.length / this.stride; }
+    get reservedByteLength() { return this.buffer.byteLength; }
+    // @ts-ignore
+    set(index, value) { return this; }
+    append(value) { return this.set(this.length, value); }
+    reserve(extra) {
+        if (extra > 0) {
+            this.length += extra;
+            const stride = this.stride;
+            const length = this.length * stride;
+            const reserved = this.buffer.length;
+            if (length >= reserved) {
+                this._resize(reserved === 0
+                    ? roundLengthUpToNearest64Bytes(length * 1, this.BYTES_PER_ELEMENT)
+                    : roundLengthUpToNearest64Bytes(length * 2, this.BYTES_PER_ELEMENT));
+            }
+        }
+        return this;
+    }
+    flush(length = this.length) {
+        length = roundLengthUpToNearest64Bytes(length * this.stride, this.BYTES_PER_ELEMENT);
+        const array = sliceOrExtendArray(this.buffer, length);
+        this.clear();
+        return array;
+    }
+    clear() {
+        this.length = 0;
+        this._resize(0);
+        return this;
+    }
+    _resize(newLength) {
+        return this.buffer = (0, buffer_js_1.memcpy)(new this.ArrayType(newLength), this.buffer);
+    }
+}
+exports.BufferBuilder = BufferBuilder;
+BufferBuilder.prototype.offset = 0;
+/** @ignore */
+class DataBufferBuilder extends BufferBuilder {
+    last() { return this.get(this.length - 1); }
+    get(index) { return this.buffer[index]; }
+    set(index, value) {
+        this.reserve(index - this.length + 1);
+        this.buffer[index * this.stride] = value;
+        return this;
+    }
+}
+exports.DataBufferBuilder = DataBufferBuilder;
+/** @ignore */
+class BitmapBufferBuilder extends DataBufferBuilder {
+    constructor(data = new Uint8Array(0)) {
+        super(data, 1 / 8);
+        this.numValid = 0;
+    }
+    get numInvalid() { return this.length - this.numValid; }
+    get(idx) { return this.buffer[idx >> 3] >> idx % 8 & 1; }
+    set(idx, val) {
+        const { buffer } = this.reserve(idx - this.length + 1);
+        const byte = idx >> 3, bit = idx % 8, cur = buffer[byte] >> bit & 1;
+        // If `val` is truthy and the current bit is 0, flip it to 1 and increment `numValid`.
+        // If `val` is falsey and the current bit is 1, flip it to 0 and decrement `numValid`.
+        val ? cur === 0 && ((buffer[byte] |= (1 << bit)), ++this.numValid)
+            : cur === 1 && ((buffer[byte] &= ~(1 << bit)), --this.numValid);
+        return this;
+    }
+    clear() {
+        this.numValid = 0;
+        return super.clear();
+    }
+}
+exports.BitmapBufferBuilder = BitmapBufferBuilder;
+/** @ignore */
+class OffsetsBufferBuilder extends DataBufferBuilder {
+    constructor(data = new Int32Array(1)) { super(data, 1); }
+    append(value) {
+        return this.set(this.length - 1, value);
+    }
+    set(index, value) {
+        const offset = this.length - 1;
+        const buffer = this.reserve(index - offset + 1).buffer;
+        if (offset < index++) {
+            buffer.fill(buffer[offset], offset, index);
+        }
+        buffer[index] = buffer[index - 1] + value;
+        return this;
+    }
+    flush(length = this.length - 1) {
+        if (length > this.length) {
+            this.set(length - 1, 0);
+        }
+        return super.flush(length + 1);
+    }
+}
+exports.OffsetsBufferBuilder = OffsetsBufferBuilder;
+
+//# sourceMappingURL=buffer.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/buffer.js.map b/igv_component/node_modules/apache-arrow/builder/buffer.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..c6e1461c27f6cd62912aea1c5e3f670b5e8028e0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/buffer.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/buffer.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,iDAA2C;AAa3C,cAAc;AACd,MAAM,6BAA6B,GAAG,CAAC,GAAW,EAAE,GAAW,EAAE,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,IAAI,CAAC,GAAG,CAAC,GAAG,GAAG,CAAC,GAAG,EAAE,CAAC,GAAG,CAAC,EAAE,CAAC,IAAI,EAAE,CAAC,GAAG,GAAG,CAAC;AACxH,cAAc;AACd,MAAM,kBAAkB,GAAG,CAAqC,GAAM,EAAE,GAAG,GAAG,CAAC,EAAE,EAAE,CAAC,CAChF,GAAG,CAAC,MAAM,IAAI,GAAG,CAAC,CAAC,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC,EAAE,GAAG,CAAC,CAAC,CAAC,CAAC,IAAA,kBAAM,EAAC,IAAK,GAAG,CAAC,WAAmB,CAAC,GAAG,CAAC,EAAE,GAAG,EAAE,CAAC,CAAC,CAC1F,CAAC;AAOP,cAAc;AACd,MAAa,aAAa;IAEtB,YAAY,MAAS,EAAE,MAAM,GAAG,CAAC;QAC7B,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC;QACrB,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC;QACrB,IAAI,CAAC,iBAAiB,GAAG,MAAM,CAAC,iBAAiB,CAAC;QAClD,IAAI,CAAC,SAAS,GAAG,MAAM,CAAC,WAA2B,CAAC;QACpD,IAAI,CAAC,OAAO,CAAC,IAAI,CAAC,MAAM,GAAG,IAAI,CAAC,IAAI,CAAC,MAAM,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC;IAClE,CAAC;IAQD,IAAW,UAAU;QACjB,OAAO,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,MAAM,GAAG,IAAI,CAAC,MAAM,CAAC,GAAG,IAAI,CAAC,iBAAiB,CAAC;IACzE,CAAC;IACD,IAAW,cAAc,KAAK,OAAO,IAAI,CAAC,MAAM,CAAC,MAAM,GAAG,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC;IACxE,IAAW,kBAAkB,KAAK,OAAO,IAAI,CAAC,MAAM,CAAC,UAAU,CAAC,CAAC,CAAC;IAElE,aAAa;IACN,GAAG,CAAC,KAAa,EAAE,KAAa,IAAI,OAAO,IAAI,CAAC,CAAC,CAAC;IAClD,MAAM,CAAC,KAAa,IAAI,OAAO,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,MAAM,EAAE,KAAK,CAAC,CAAC,CAAC,CAAC;IAC9D,OAAO,CAAC,KAAa;QACxB,IAAI,KAAK,GAAG,CAAC,EAAE;YACX,IAAI,CAAC,MAAM,IAAI,KAAK,CAAC;YACrB,MAAM,MAAM,GAAG,IAAI,CAAC,MAAM,CAAC;YAC3B,MAAM,MAAM,GAAG,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC;YACpC,MAAM,QAAQ,GAAG,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC;YACpC,IAAI,MAAM,IAAI,QAAQ,EAAE;gBACpB,IAAI,CAAC,OAAO,CAAC,QAAQ,KAAK,CAAC;oBACvB,CAAC,CAAC,6BAA6B,CAAC,MAAM,GAAG,CAAC,EAAE,IAAI,CAAC,iBAAiB,CAAC;oBACnE,CAAC,CAAC,6BAA6B,CAAC,MAAM,GAAG,CAAC,EAAE,IAAI,CAAC,iBAAiB,CAAC,CACtE,CAAC;aACL;SACJ;QACD,OAAO,IAAI,CAAC;IAChB,CAAC;IACM,KAAK,CAAC,MAAM,GAAG,IAAI,CAAC,MAAM;QAC7B,MAAM,GAAG,6BAA6B,CAAC,MAAM,GAAG,IAAI,CAAC,MAAM,EAAE,IAAI,CAAC,iBAAiB,CAAC,CAAC;QACrF,MAAM,KAAK,GAAG,kBAAkB,CAAI,IAAI,CAAC,MAAM,EAAE,MAAM,CAAC,CAAC;QACzD,IAAI,CAAC,KAAK,EAAE,CAAC;QACb,OAAO,KAAK,CAAC;IACjB,CAAC;IACM,KAAK;QACR,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC;QAChB,OAAO,IAAI,CAAC;IAChB,CAAC;IACS,OAAO,CAAC,SAAiB;QAC/B,OAAO,IAAI,CAAC,MAAM,GAAM,IAAA,kBAAM,EAAC,IAAI,IAAI,CAAC,SAAS,CAAC,SAAS,CAAC,EAAE,IAAI,CAAC,MAAM,CAAC,CAAC;IAC/E,CAAC;CACJ;AAtDD,sCAsDC;AAEA,aAAa,CAAC,SAAiB,CAAC,MAAM,GAAG,CAAC,CAAC;AAE5C,cAAc;AACd,MAAa,iBAAwC,SAAQ,aAAwB;IAC1E,IAAI,KAAK,OAAO,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC;IAC5C,GAAG,CAAC,KAAa,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IACjD,GAAG,CAAC,KAAa,EAAE,KAAa;QACnC,IAAI,CAAC,OAAO,CAAC,KAAK,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;QACtC,IAAI,CAAC,MAAM,CAAC,KAAK,GAAG,IAAI,CAAC,MAAM,CAAC,GAAG,KAAK,CAAC;QACzC,OAAO,IAAI,CAAC;IAChB,CAAC;CACJ;AARD,8CAQC;AAED,cAAc;AACd,MAAa,mBAAoB,SAAQ,iBAA6B;IAElE,YAAY,IAAI,GAAG,IAAI,UAAU,CAAC,CAAC,CAAC;QAAI,KAAK,CAAC,IAAI,EAAE,CAAC,GAAG,CAAC,CAAC,CAAC;QAEpD,aAAQ,GAAG,CAAC,CAAC;IAFwC,CAAC;IAG7D,IAAW,UAAU,KAAK,OAAO,IAAI,CAAC,MAAM,GAAG,IAAI,CAAC,QAAQ,CAAC,CAAC,CAAC;IACxD,GAAG,CAAC,GAAW,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,GAAG,IAAI,CAAC,CAAC,IAAI,GAAG,GAAG,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;IACjE,GAAG,CAAC,GAAW,EAAE,GAAW;QAC/B,MAAM,EAAE,MAAM,EAAE,GAAG,IAAI,CAAC,OAAO,CAAC,GAAG,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;QACvD,MAAM,IAAI,GAAG,GAAG,IAAI,CAAC,EAAE,GAAG,GAAG,GAAG,GAAG,CAAC,EAAE,GAAG,GAAG,MAAM,CAAC,IAAI,CAAC,IAAI,GAAG,GAAG,CAAC,CAAC;QACpE,sFAAsF;QACtF,sFAAsF;QACtF,GAAG,CAAC,CAAC,CAAC,GAAG,KAAK,CAAC,IAAI,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,IAAI,GAAG,CAAC,CAAC,EAAE,EAAE,IAAI,CAAC,QAAQ,CAAC;YAC9D,CAAC,CAAC,GAAG,KAAK,CAAC,IAAI,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,GAAG,CAAC,CAAC,EAAE,EAAE,IAAI,CAAC,QAAQ,CAAC,CAAC;QACpE,OAAO,IAAI,CAAC;IAChB,CAAC;IACM,KAAK;QACR,IAAI,CAAC,QAAQ,GAAG,CAAC,CAAC;QAClB,OAAO,KAAK,CAAC,KAAK,EAAE,CAAC;IACzB,CAAC;CACJ;AApBD,kDAoBC;AAED,cAAc;AACd,MAAa,oBAAqB,SAAQ,iBAA6B;IACnE,YAAY,IAAI,GAAG,IAAI,UAAU,CAAC,CAAC,CAAC,IAAI,KAAK,CAAC,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC;IAClD,MAAM,CAAC,KAAa;QACvB,OAAO,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,KAAK,CAAC,CAAC;IAC5C,CAAC;IACM,GAAG,CAAC,KAAa,EAAE,KAAa;QACnC,MAAM,MAAM,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAC/B,MAAM,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC,KAAK,GAAG,MAAM,GAAG,CAAC,CAAC,CAAC,MAAM,CAAC;QACvD,IAAI,MAAM,GAAG,KAAK,EAAE,EAAE;YAClB,MAAM,CAAC,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,EAAE,MAAM,EAAE,KAAK,CAAC,CAAC;SAC9C;QACD,MAAM,CAAC,KAAK,CAAC,GAAG,MAAM,CAAC,KAAK,GAAG,CAAC,CAAC,GAAG,KAAK,CAAC;QAC1C,OAAO,IAAI,CAAC;IAChB,CAAC;IACM,KAAK,CAAC,MAAM,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC;QACjC,IAAI,MAAM,GAAG,IAAI,CAAC,MAAM,EAAE;YACtB,IAAI,CAAC,GAAG,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,CAAC,CAAC;SAC3B;QACD,OAAO,KAAK,CAAC,KAAK,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;IACnC,CAAC;CACJ;AApBD,oDAoBC","file":"buff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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/buffer.mjs b/igv_component/node_modules/apache-arrow/builder/buffer.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..5c4e1a4c84baa8fb4cf4850951ebdf11858b0386
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/buffer.mjs
@@ -0,0 +1,124 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { memcpy } from '../util/buffer.mjs';
+/** @ignore */
+const roundLengthUpToNearest64Bytes = (len, BPE) => ((((Math.ceil(len) * BPE) + 63) & ~63) || 64) / BPE;
+/** @ignore */
+const sliceOrExtendArray = (arr, len = 0) => (arr.length >= len ? arr.subarray(0, len) : memcpy(new arr.constructor(len), arr, 0));
+/** @ignore */
+export class BufferBuilder {
+    constructor(buffer, stride = 1) {
+        this.buffer = buffer;
+        this.stride = stride;
+        this.BYTES_PER_ELEMENT = buffer.BYTES_PER_ELEMENT;
+        this.ArrayType = buffer.constructor;
+        this._resize(this.length = Math.ceil(buffer.length / stride));
+    }
+    get byteLength() {
+        return Math.ceil(this.length * this.stride) * this.BYTES_PER_ELEMENT;
+    }
+    get reservedLength() { return this.buffer.length / this.stride; }
+    get reservedByteLength() { return this.buffer.byteLength; }
+    // @ts-ignore
+    set(index, value) { return this; }
+    append(value) { return this.set(this.length, value); }
+    reserve(extra) {
+        if (extra > 0) {
+            this.length += extra;
+            const stride = this.stride;
+            const length = this.length * stride;
+            const reserved = this.buffer.length;
+            if (length >= reserved) {
+                this._resize(reserved === 0
+                    ? roundLengthUpToNearest64Bytes(length * 1, this.BYTES_PER_ELEMENT)
+                    : roundLengthUpToNearest64Bytes(length * 2, this.BYTES_PER_ELEMENT));
+            }
+        }
+        return this;
+    }
+    flush(length = this.length) {
+        length = roundLengthUpToNearest64Bytes(length * this.stride, this.BYTES_PER_ELEMENT);
+        const array = sliceOrExtendArray(this.buffer, length);
+        this.clear();
+        return array;
+    }
+    clear() {
+        this.length = 0;
+        this._resize(0);
+        return this;
+    }
+    _resize(newLength) {
+        return this.buffer = memcpy(new this.ArrayType(newLength), this.buffer);
+    }
+}
+BufferBuilder.prototype.offset = 0;
+/** @ignore */
+export class DataBufferBuilder extends BufferBuilder {
+    last() { return this.get(this.length - 1); }
+    get(index) { return this.buffer[index]; }
+    set(index, value) {
+        this.reserve(index - this.length + 1);
+        this.buffer[index * this.stride] = value;
+        return this;
+    }
+}
+/** @ignore */
+export class BitmapBufferBuilder extends DataBufferBuilder {
+    constructor(data = new Uint8Array(0)) {
+        super(data, 1 / 8);
+        this.numValid = 0;
+    }
+    get numInvalid() { return this.length - this.numValid; }
+    get(idx) { return this.buffer[idx >> 3] >> idx % 8 & 1; }
+    set(idx, val) {
+        const { buffer } = this.reserve(idx - this.length + 1);
+        const byte = idx >> 3, bit = idx % 8, cur = buffer[byte] >> bit & 1;
+        // If `val` is truthy and the current bit is 0, flip it to 1 and increment `numValid`.
+        // If `val` is falsey and the current bit is 1, flip it to 0 and decrement `numValid`.
+        val ? cur === 0 && ((buffer[byte] |= (1 << bit)), ++this.numValid)
+            : cur === 1 && ((buffer[byte] &= ~(1 << bit)), --this.numValid);
+        return this;
+    }
+    clear() {
+        this.numValid = 0;
+        return super.clear();
+    }
+}
+/** @ignore */
+export class OffsetsBufferBuilder extends DataBufferBuilder {
+    constructor(data = new Int32Array(1)) { super(data, 1); }
+    append(value) {
+        return this.set(this.length - 1, value);
+    }
+    set(index, value) {
+        const offset = this.length - 1;
+        const buffer = this.reserve(index - offset + 1).buffer;
+        if (offset < index++) {
+            buffer.fill(buffer[offset], offset, index);
+        }
+        buffer[index] = buffer[index - 1] + value;
+        return this;
+    }
+    flush(length = this.length - 1) {
+        if (length > this.length) {
+            this.set(length - 1, 0);
+        }
+        return super.flush(length + 1);
+    }
+}
+
+//# sourceMappingURL=buffer.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/buffer.mjs.map b/igv_component/node_modules/apache-arrow/builder/buffer.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..8c92342fc2d0ab40dc45349b007454a52f2cb9ed
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/buffer.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/buffer.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,EAAE,MAAM,EAAE,MAAM,mBAAmB,CAAC;AAa3C,cAAc;AACd,MAAM,6BAA6B,GAAG,CAAC,GAAW,EAAE,GAAW,EAAE,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,IAAI,CAAC,GAAG,CAAC,GAAG,GAAG,CAAC,GAAG,EAAE,CAAC,GAAG,CAAC,EAAE,CAAC,IAAI,EAAE,CAAC,GAAG,GAAG,CAAC;AACxH,cAAc;AACd,MAAM,kBAAkB,GAAG,CAAqC,GAAM,EAAE,GAAG,GAAG,CAAC,EAAE,EAAE,CAAC,CAChF,GAAG,CAAC,MAAM,IAAI,GAAG,CAAC,CAAC,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC,EAAE,GAAG,CAAC,CAAC,CAAC,CAAC,MAAM,CAAC,IAAK,GAAG,CAAC,WAAmB,CAAC,GAAG,CAAC,EAAE,GAAG,EAAE,CAAC,CAAC,CAC1F,CAAC;AAOP,cAAc;AACd,MAAM,OAAO,aAAa;IAEtB,YAAY,MAAS,EAAE,MAAM,GAAG,CAAC;QAC7B,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC;QACrB,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC;QACrB,IAAI,CAAC,iBAAiB,GAAG,MAAM,CAAC,iBAAiB,CAAC;QAClD,IAAI,CAAC,SAAS,GAAG,MAAM,CAAC,WAA2B,CAAC;QACpD,IAAI,CAAC,OAAO,CAAC,IAAI,CAAC,MAAM,GAAG,IAAI,CAAC,IAAI,CAAC,MAAM,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC;IAClE,CAAC;IAQD,IAAW,UAAU;QACjB,OAAO,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,MAAM,GAAG,IAAI,CAAC,MAAM,CAAC,GAAG,IAAI,CAAC,iBAAiB,CAAC;IACzE,CAAC;IACD,IAAW,cAAc,KAAK,OAAO,IAAI,CAAC,MAAM,CAAC,MAAM,GAAG,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC;IACxE,IAAW,kBAAkB,KAAK,OAAO,IAAI,CAAC,MAAM,CAAC,UAAU,CAAC,CAAC,CAAC;IAElE,aAAa;IACN,GAAG,CAAC,KAAa,EAAE,KAAa,IAAI,OAAO,IAAI,CAAC,CAAC,CAAC;IAClD,MAAM,CAAC,KAAa,IAAI,OAAO,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,MAAM,EAAE,KAAK,CAAC,CAAC,CAAC,CAAC;IAC9D,OAAO,CAAC,KAAa;QACxB,IAAI,KAAK,GAAG,CAAC,EAAE;YACX,IAAI,CAAC,MAAM,IAAI,KAAK,CAAC;YACrB,MAAM,MAAM,GAAG,IAAI,CAAC,MAAM,CAAC;YAC3B,MAAM,MAAM,GAAG,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC;YACpC,MAAM,QAAQ,GAAG,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC;YACpC,IAAI,MAAM,IAAI,QAAQ,EAAE;gBACpB,IAAI,CAAC,OAAO,CAAC,QAAQ,KAAK,CAAC;oBACvB,CAAC,CAAC,6BAA6B,CAAC,MAAM,GAAG,CAAC,EAAE,IAAI,CAAC,iBAAiB,CAAC;oBACnE,CAAC,CAAC,6BAA6B,CAAC,MAAM,GAAG,CAAC,EAAE,IAAI,CAAC,iBAAiB,CAAC,CACtE,CAAC;aACL;SACJ;QACD,OAAO,IAAI,CAAC;IAChB,CAAC;IACM,KAAK,CAAC,MAAM,GAAG,IAAI,CAAC,MAAM;QAC7B,MAAM,GAAG,6BAA6B,CAAC,MAAM,GAAG,IAAI,CAAC,MAAM,EAAE,IAAI,CAAC,iBAAiB,CAAC,CAAC;QACrF,MAAM,KAAK,GAAG,kBAAkB,CAAI,IAAI,CAAC,MAAM,EAAE,MAAM,CAAC,CAAC;QACzD,IAAI,CAAC,KAAK,EAAE,CAAC;QACb,OAAO,KAAK,CAAC;IACjB,CAAC;IACM,KAAK;QACR,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC;QAChB,OAAO,IAAI,CAAC;IAChB,CAAC;IACS,OAAO,CAAC,SAAiB;QAC/B,OAAO,IAAI,CAAC,MAAM,GAAM,MAAM,CAAC,IAAI,IAAI,CAAC,SAAS,CAAC,SAAS,CAAC,EAAE,IAAI,CAAC,MAAM,CAAC,CAAC;IAC/E,CAAC;CACJ;AAEA,aAAa,CAAC,SAAiB,CAAC,MAAM,GAAG,CAAC,CAAC;AAE5C,cAAc;AACd,MAAM,OAAO,iBAAwC,SAAQ,aAAwB;IAC1E,IAAI,KAAK,OAAO,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC;IAC5C,GAAG,CAAC,KAAa,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IACjD,GAAG,CAAC,KAAa,EAAE,KAAa;QACnC,IAAI,CAAC,OAAO,CAAC,KAAK,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;QACtC,IAAI,CAAC,MAAM,CAAC,KAAK,GAAG,IAAI,CAAC,MAAM,CAAC,GAAG,KAAK,CAAC;QACzC,OAAO,IAAI,CAAC;IAChB,CAAC;CACJ;AAED,cAAc;AACd,MAAM,OAAO,mBAAoB,SAAQ,iBAA6B;IAElE,YAAY,IAAI,GAAG,IAAI,UAAU,CAAC,CAAC,CAAC;QAAI,KAAK,CAAC,IAAI,EAAE,CAAC,GAAG,CAAC,CAAC,CAAC;QAEpD,aAAQ,GAAG,CAAC,CAAC;IAFwC,CAAC;IAG7D,IAAW,UAAU,KAAK,OAAO,IAAI,CAAC,MAAM,GAAG,IAAI,CAAC,QAAQ,CAAC,CAAC,CAAC;IACxD,GAAG,CAAC,GAAW,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,GAAG,IAAI,CAAC,CAAC,IAAI,GAAG,GAAG,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;IACjE,GAAG,CAAC,GAAW,EAAE,GAAW;QAC/B,MAAM,EAAE,MAAM,EAAE,GAAG,IAAI,CAAC,OAAO,CAAC,GAAG,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;QACvD,MAAM,IAAI,GAAG,GAAG,IAAI,CAAC,EAAE,GAAG,GAAG,GAAG,GAAG,CAAC,EAAE,GAAG,GAAG,MAAM,CAAC,IAAI,CAAC,IAAI,GAAG,GAAG,CAAC,CAAC;QACpE,sFAAsF;QACtF,sFAAsF;QACtF,GAAG,CAAC,CAAC,CAAC,GAAG,KAAK,CAAC,IAAI,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,IAAI,GAAG,CAAC,CAAC,EAAE,EAAE,IAAI,CAAC,QAAQ,CAAC;YAC9D,CAAC,CAAC,GAAG,KAAK,CAAC,IAAI,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,GAAG,CAAC,CAAC,EAAE,EAAE,IAAI,CAAC,QAAQ,CAAC,CAAC;QACpE,OAAO,IAAI,CAAC;IAChB,CAAC;IACM,KAAK;QACR,IAAI,CAAC,QAAQ,GAAG,CAAC,CAAC;QAClB,OAAO,KAAK,CAAC,KAAK,EAAE,CAAC;IACzB,CAAC;CACJ;AAED,cAAc;AACd,MAAM,OAAO,oBAAqB,SAAQ,iBAA6B;IACnE,YAAY,IAAI,GAAG,IAAI,UAAU,CAAC,CAAC,CAAC,IAAI,KAAK,CAAC,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC;IAClD,MAAM,CAAC,KAAa;QACvB,OAAO,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,KAAK,CAAC,CAAC;IAC5C,CAAC;IACM,GAAG,CAAC,KAAa,EAAE,KAAa;QACnC,MAAM,MAAM,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAC/B,MAAM,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC,KAAK,GAAG,MAAM,GAAG,CAAC,CAAC,CAAC,MAAM,CAAC;QACvD,IAAI,MAAM,GAAG,KAAK,EAAE,EAAE;YAClB,MAAM,CAAC,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,EAAE,MAAM,EAAE,KAAK,CAAC,CAAC;SAC9C;QACD,MAAM,CAAC,KAAK,CAAC,GAAG,MAAM,CAAC,KAAK,GAAG,CAAC,CAAC,GAAG,KAAK,CAAC;QAC1C,OAAO,IAAI,CAAC;IAChB,CAAC;IACM,KAAK,CAAC,MAAM,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC;QACjC,IAAI,MAAM,GAAG,IAAI,CAAC,MAAM,EAAE;YACtB,IAAI,CAAC,GAAG,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,CAAC,CAAC;SAC3B;QACD,OAAO,KAAK,CAAC,KAAK,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;IACnC,CAAC;CACJ","file":"buffer.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/date.d.ts b/igv_component/node_modules/apache-arrow/builder/date.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..1f0209fb46e06c7b184a49f9c6a3657574bcbe8c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/date.d.ts
@@ -0,0 +1,11 @@
+import { FixedWidthBuilder } from '../builder.js';
+import { Date_, DateDay, DateMillisecond } from '../type.js';
+/** @ignore */
+export declare class DateBuilder<T extends Date_ = Date_, TNull = any> extends FixedWidthBuilder<T, TNull> {
+}
+/** @ignore */
+export declare class DateDayBuilder<TNull = any> extends DateBuilder<DateDay, TNull> {
+}
+/** @ignore */
+export declare class DateMillisecondBuilder<TNull = any> extends DateBuilder<DateMillisecond, TNull> {
+}
diff --git a/igv_component/node_modules/apache-arrow/builder/date.d.ts.map b/igv_component/node_modules/apache-arrow/builder/date.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..3a026d4a4d3f8705db808b914aaf28c0acaa2c2b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/date.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/date.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,iBAAiB,EAAE,MAAM,eAAe,CAAC;AAClD,OAAO,EAAE,KAAK,EAAE,OAAO,EAAE,eAAe,EAAE,MAAM,YAAY,CAAC;AAG7D,cAAc;AACd,qBAAa,WAAW,CAAC,CAAC,SAAS,KAAK,GAAG,KAAK,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,iBAAiB,CAAC,CAAC,EAAE,KAAK,CAAC;CAAI;AAItG,cAAc;AACd,qBAAa,cAAc,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,WAAW,CAAC,OAAO,EAAE,KAAK,CAAC;CAAI;AAIhF,cAAc;AACd,qBAAa,sBAAsB,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,WAAW,CAAC,eAAe,EAAE,KAAK,CAAC;CAAI","file":"date.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/date.js b/igv_component/node_modules/apache-arrow/builder/date.js
new file mode 100644
index 0000000000000000000000000000000000000000..289f3d48db77a3f09453c56abac7b488d1536285
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/date.js
@@ -0,0 +1,38 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.DateMillisecondBuilder = exports.DateDayBuilder = exports.DateBuilder = void 0;
+const builder_js_1 = require("../builder.js");
+const set_js_1 = require("../visitor/set.js");
+/** @ignore */
+class DateBuilder extends builder_js_1.FixedWidthBuilder {
+}
+exports.DateBuilder = DateBuilder;
+DateBuilder.prototype._setValue = set_js_1.setDate;
+/** @ignore */
+class DateDayBuilder extends DateBuilder {
+}
+exports.DateDayBuilder = DateDayBuilder;
+DateDayBuilder.prototype._setValue = set_js_1.setDateDay;
+/** @ignore */
+class DateMillisecondBuilder extends DateBuilder {
+}
+exports.DateMillisecondBuilder = DateMillisecondBuilder;
+DateMillisecondBuilder.prototype._setValue = set_js_1.setDateMillisecond;
+
+//# sourceMappingURL=date.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/date.js.map b/igv_component/node_modules/apache-arrow/builder/date.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..3e4b757cb06a1199dce9ac90143f94bb1202ee47
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/date.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/date.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,8CAAkD;AAElD,8CAA4E;AAE5E,cAAc;AACd,MAAa,WAAkD,SAAQ,8BAA2B;CAAI;AAAtG,kCAAsG;AAErG,WAAW,CAAC,SAAiB,CAAC,SAAS,GAAG,gBAAO,CAAC;AAEnD,cAAc;AACd,MAAa,cAA4B,SAAQ,WAA2B;CAAI;AAAhF,wCAAgF;AAE/E,cAAc,CAAC,SAAiB,CAAC,SAAS,GAAG,mBAAU,CAAC;AAEzD,cAAc;AACd,MAAa,sBAAoC,SAAQ,WAAmC;CAAI;AAAhG,wDAAgG;AAE/F,sBAAsB,CAAC,SAAiB,CAAC,SAAS,GAAG,2BAAkB,CAAC","file":"date.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/date.mjs b/igv_component/node_modules/apache-arrow/builder/date.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..1533fed3bc16f99ea9fa59c4368b87bd4f5c52c8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/date.mjs
@@ -0,0 +1,32 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { FixedWidthBuilder } from '../builder.mjs';
+import { setDate, setDateDay, setDateMillisecond } from '../visitor/set.mjs';
+/** @ignore */
+export class DateBuilder extends FixedWidthBuilder {
+}
+DateBuilder.prototype._setValue = setDate;
+/** @ignore */
+export class DateDayBuilder extends DateBuilder {
+}
+DateDayBuilder.prototype._setValue = setDateDay;
+/** @ignore */
+export class DateMillisecondBuilder extends DateBuilder {
+}
+DateMillisecondBuilder.prototype._setValue = setDateMillisecond;
+
+//# sourceMappingURL=date.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/date.mjs.map b/igv_component/node_modules/apache-arrow/builder/date.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..c9b9a962c2ff1ee0c8d281c1cae2f788dab25c08
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/date.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/date.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,EAAE,iBAAiB,EAAE,MAAM,eAAe,CAAC;AAElD,OAAO,EAAE,OAAO,EAAE,UAAU,EAAE,kBAAkB,EAAE,MAAM,mBAAmB,CAAC;AAE5E,cAAc;AACd,MAAM,OAAO,WAAkD,SAAQ,iBAA2B;CAAI;AAErG,WAAW,CAAC,SAAiB,CAAC,SAAS,GAAG,OAAO,CAAC;AAEnD,cAAc;AACd,MAAM,OAAO,cAA4B,SAAQ,WAA2B;CAAI;AAE/E,cAAc,CAAC,SAAiB,CAAC,SAAS,GAAG,UAAU,CAAC;AAEzD,cAAc;AACd,MAAM,OAAO,sBAAoC,SAAQ,WAAmC;CAAI;AAE/F,sBAAsB,CAAC,SAAiB,CAAC,SAAS,GAAG,kBAAkB,CAAC","file":"date.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/decimal.d.ts b/igv_component/node_modules/apache-arrow/builder/decimal.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..1c2c79774e1e4171b5baee060505e649438cc46e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/decimal.d.ts
@@ -0,0 +1,5 @@
+import { Decimal } from '../type.js';
+import { FixedWidthBuilder } from '../builder.js';
+/** @ignore */
+export declare class DecimalBuilder<TNull = any> extends FixedWidthBuilder<Decimal, TNull> {
+}
diff --git a/igv_component/node_modules/apache-arrow/builder/decimal.d.ts.map b/igv_component/node_modules/apache-arrow/builder/decimal.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..206a077dd05e0dc5ee736de0cff3db0ad94f37e3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/decimal.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/decimal.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,OAAO,EAAE,MAAM,YAAY,CAAC;AACrC,OAAO,EAAE,iBAAiB,EAAE,MAAM,eAAe,CAAC;AAGlD,cAAc;AACd,qBAAa,cAAc,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,iBAAiB,CAAC,OAAO,EAAE,KAAK,CAAC;CAAI","file":"decimal.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/decimal.js b/igv_component/node_modules/apache-arrow/builder/decimal.js
new file mode 100644
index 0000000000000000000000000000000000000000..0707d9f024456f7d311b2d4161642a0c38723e82
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/decimal.js
@@ -0,0 +1,28 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.DecimalBuilder = void 0;
+const builder_js_1 = require("../builder.js");
+const set_js_1 = require("../visitor/set.js");
+/** @ignore */
+class DecimalBuilder extends builder_js_1.FixedWidthBuilder {
+}
+exports.DecimalBuilder = DecimalBuilder;
+DecimalBuilder.prototype._setValue = set_js_1.setDecimal;
+
+//# sourceMappingURL=decimal.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/decimal.js.map b/igv_component/node_modules/apache-arrow/builder/decimal.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..439b3fb9bf8df23f5b60afcfdf2469eec5b9e7ae
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/decimal.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/decimal.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAGrB,8CAAkD;AAClD,8CAA+C;AAE/C,cAAc;AACd,MAAa,cAA4B,SAAQ,8BAAiC;CAAI;AAAtF,wCAAsF;AAErF,cAAc,CAAC,SAAiB,CAAC,SAAS,GAAG,mBAAU,CAAC","file":"decimal.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/decimal.mjs b/igv_component/node_modules/apache-arrow/builder/decimal.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..7fd206bb510e5a058f341a4dc288a462f0ad7b7b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/decimal.mjs
@@ -0,0 +1,24 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { FixedWidthBuilder } from '../builder.mjs';
+import { setDecimal } from '../visitor/set.mjs';
+/** @ignore */
+export class DecimalBuilder extends FixedWidthBuilder {
+}
+DecimalBuilder.prototype._setValue = setDecimal;
+
+//# sourceMappingURL=decimal.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/decimal.mjs.map b/igv_component/node_modules/apache-arrow/builder/decimal.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..d1a6381ba8338de864e06500260f180d57b0153d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/decimal.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/decimal.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAGrB,OAAO,EAAE,iBAAiB,EAAE,MAAM,eAAe,CAAC;AAClD,OAAO,EAAE,UAAU,EAAE,MAAM,mBAAmB,CAAC;AAE/C,cAAc;AACd,MAAM,OAAO,cAA4B,SAAQ,iBAAiC;CAAI;AAErF,cAAc,CAAC,SAAiB,CAAC,SAAS,GAAG,UAAU,CAAC","file":"decimal.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/dictionary.d.ts b/igv_component/node_modules/apache-arrow/builder/dictionary.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2fbcab8f425b71116ca8f1a8b67a98f5967b2a23
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/dictionary.d.ts
@@ -0,0 +1,33 @@
+import { Vector } from '../vector.js';
+import { IntBuilder } from './int.js';
+import { Dictionary, DataType } from '../type.js';
+import { Builder, BuilderOptions } from '../builder.js';
+declare type DictionaryHashFunction = (x: any) => string | number;
+export interface DictionaryBuilderOptions<T extends DataType = any, TNull = any> extends BuilderOptions<T, TNull> {
+    dictionaryHashFunction?: DictionaryHashFunction;
+}
+/** @ignore */
+export declare class DictionaryBuilder<T extends Dictionary, TNull = any> extends Builder<T, TNull> {
+    protected _dictionaryOffset: number;
+    protected _dictionary?: Vector<T['dictionary']>;
+    protected _keysToIndices: {
+        [key: string]: number;
+    };
+    readonly indices: IntBuilder<T['indices']>;
+    readonly dictionary: Builder<T['dictionary']>;
+    constructor({ 'type': type, 'nullValues': nulls, 'dictionaryHashFunction': hashFn }: DictionaryBuilderOptions<T, TNull>);
+    get values(): T["indices"]["TArray"] | null;
+    get nullCount(): number;
+    get nullBitmap(): Uint8Array | null;
+    get byteLength(): number;
+    get reservedLength(): number;
+    get reservedByteLength(): number;
+    isValid(value: T['TValue'] | TNull): boolean;
+    setValid(index: number, valid: boolean): boolean;
+    setValue(index: number, value: T['TValue']): void;
+    flush(): import("../data.js").Data<T>;
+    finish(): this;
+    clear(): this;
+    valueToKey(val: any): string | number;
+}
+export {};
diff --git a/igv_component/node_modules/apache-arrow/builder/dictionary.d.ts.map b/igv_component/node_modules/apache-arrow/builder/dictionary.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..eb5a88b5c5b550f51fb7ebd2ba2d643a09447ed8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/dictionary.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/dictionary.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,MAAM,EAAE,MAAM,cAAc,CAAC;AACtC,OAAO,EAAE,UAAU,EAAE,MAAM,UAAU,CAAC;AACtC,OAAO,EAAE,UAAU,EAAE,QAAQ,EAAE,MAAM,YAAY,CAAC;AAClD,OAAO,EAAE,OAAO,EAAE,cAAc,EAAE,MAAM,eAAe,CAAC;AAGxD,aAAK,sBAAsB,GAAG,CAAC,CAAC,EAAE,GAAG,KAAK,MAAM,GAAG,MAAM,CAAC;AAE1D,MAAM,WAAW,wBAAwB,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,cAAc,CAAC,CAAC,EAAE,KAAK,CAAC;IAC7G,sBAAsB,CAAC,EAAE,sBAAsB,CAAC;CACnD;AAED,cAAc;AACd,qBAAa,iBAAiB,CAAC,CAAC,SAAS,UAAU,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,OAAO,CAAC,CAAC,EAAE,KAAK,CAAC;IAEvF,SAAS,CAAC,iBAAiB,EAAE,MAAM,CAAC;IACpC,SAAS,CAAC,WAAW,CAAC,EAAE,MAAM,CAAC,CAAC,CAAC,YAAY,CAAC,CAAC,CAAC;IAChD,SAAS,CAAC,cAAc,EAAE;QAAE,CAAC,GAAG,EAAE,MAAM,GAAG,MAAM,CAAA;KAAE,CAAC;IACpD,SAAgB,OAAO,EAAE,UAAU,CAAC,CAAC,CAAC,SAAS,CAAC,CAAC,CAAC;IAClD,SAAgB,UAAU,EAAE,OAAO,CAAC,CAAC,CAAC,YAAY,CAAC,CAAC,CAAC;gBAEzC,EAAE,MAAM,EAAE,IAAI,EAAE,YAAY,EAAE,KAAK,EAAE,wBAAwB,EAAE,MAAM,EAAE,EAAE,wBAAwB,CAAC,CAAC,EAAE,KAAK,CAAC;IAYvH,IAAW,MAAM,kCAAkC;IACnD,IAAW,SAAS,WAAqC;IACzD,IAAW,UAAU,sBAAsC;IAC3D,IAAW,UAAU,WAAmE;IACxF,IAAW,cAAc,WAA2E;IACpG,IAAW,kBAAkB,WAAmF;IACzG,OAAO,CAAC,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,KAAK;IAClC,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,OAAO;IAMtC,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC;IAS1C,KAAK;IAWL,MAAM;IAON,KAAK;IAKL,UAAU,CAAC,GAAG,EAAE,GAAG,GAAG,MAAM,GAAG,MAAM;CAG/C","file":"dictionary.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/dictionary.js b/igv_component/node_modules/apache-arrow/builder/dictionary.js
new file mode 100644
index 0000000000000000000000000000000000000000..3c5aeaed7dc78bc447b10c81377adb4020a13409
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/dictionary.js
@@ -0,0 +1,87 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.DictionaryBuilder = void 0;
+const type_js_1 = require("../type.js");
+const builder_js_1 = require("../builder.js");
+const factories_js_1 = require("../factories.js");
+/** @ignore */
+class DictionaryBuilder extends builder_js_1.Builder {
+    constructor({ 'type': type, 'nullValues': nulls, 'dictionaryHashFunction': hashFn }) {
+        super({ type: new type_js_1.Dictionary(type.dictionary, type.indices, type.id, type.isOrdered) });
+        this._nulls = null;
+        this._dictionaryOffset = 0;
+        this._keysToIndices = Object.create(null);
+        this.indices = (0, factories_js_1.makeBuilder)({ 'type': this.type.indices, 'nullValues': nulls });
+        this.dictionary = (0, factories_js_1.makeBuilder)({ 'type': this.type.dictionary, 'nullValues': null });
+        if (typeof hashFn === 'function') {
+            this.valueToKey = hashFn;
+        }
+    }
+    get values() { return this.indices.values; }
+    get nullCount() { return this.indices.nullCount; }
+    get nullBitmap() { return this.indices.nullBitmap; }
+    get byteLength() { return this.indices.byteLength + this.dictionary.byteLength; }
+    get reservedLength() { return this.indices.reservedLength + this.dictionary.reservedLength; }
+    get reservedByteLength() { return this.indices.reservedByteLength + this.dictionary.reservedByteLength; }
+    isValid(value) { return this.indices.isValid(value); }
+    setValid(index, valid) {
+        const indices = this.indices;
+        valid = indices.setValid(index, valid);
+        this.length = indices.length;
+        return valid;
+    }
+    setValue(index, value) {
+        const keysToIndices = this._keysToIndices;
+        const key = this.valueToKey(value);
+        let idx = keysToIndices[key];
+        if (idx === undefined) {
+            keysToIndices[key] = idx = this._dictionaryOffset + this.dictionary.append(value).length - 1;
+        }
+        return this.indices.setValue(index, idx);
+    }
+    flush() {
+        const type = this.type;
+        const prev = this._dictionary;
+        const curr = this.dictionary.toVector();
+        const data = this.indices.flush().clone(type);
+        data.dictionary = prev ? prev.concat(curr) : curr;
+        this.finished || (this._dictionaryOffset += curr.length);
+        this._dictionary = data.dictionary;
+        this.clear();
+        return data;
+    }
+    finish() {
+        this.indices.finish();
+        this.dictionary.finish();
+        this._dictionaryOffset = 0;
+        this._keysToIndices = Object.create(null);
+        return super.finish();
+    }
+    clear() {
+        this.indices.clear();
+        this.dictionary.clear();
+        return super.clear();
+    }
+    valueToKey(val) {
+        return typeof val === 'string' ? val : `${val}`;
+    }
+}
+exports.DictionaryBuilder = DictionaryBuilder;
+
+//# sourceMappingURL=dictionary.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/dictionary.js.map b/igv_component/node_modules/apache-arrow/builder/dictionary.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..6f172a9f8a9fe838b31baa271120f587f6e4ce2e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/dictionary.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/dictionary.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAIrB,wCAAkD;AAClD,8CAAwD;AACxD,kDAA8C;AAQ9C,cAAc;AACd,MAAa,iBAAqD,SAAQ,oBAAiB;IAQvF,YAAY,EAAE,MAAM,EAAE,IAAI,EAAE,YAAY,EAAE,KAAK,EAAE,wBAAwB,EAAE,MAAM,EAAsC;QACnH,KAAK,CAAC,EAAE,IAAI,EAAE,IAAI,oBAAU,CAAC,IAAI,CAAC,UAAU,EAAE,IAAI,CAAC,OAAO,EAAE,IAAI,CAAC,EAAE,EAAE,IAAI,CAAC,SAAS,CAAM,EAAE,CAAC,CAAC;QAC7F,IAAI,CAAC,MAAM,GAAQ,IAAI,CAAC;QACxB,IAAI,CAAC,iBAAiB,GAAG,CAAC,CAAC;QAC3B,IAAI,CAAC,cAAc,GAAG,MAAM,CAAC,MAAM,CAAC,IAAI,CAAC,CAAC;QAC1C,IAAI,CAAC,OAAO,GAAG,IAAA,0BAAW,EAAC,EAAE,MAAM,EAAE,IAAI,CAAC,IAAI,CAAC,OAAO,EAAE,YAAY,EAAE,KAAK,EAAE,CAA6B,CAAC;QAC3G,IAAI,CAAC,UAAU,GAAG,IAAA,0BAAW,EAAC,EAAE,MAAM,EAAE,IAAI,CAAC,IAAI,CAAC,UAAU,EAAE,YAAY,EAAE,IAAI,EAAE,CAA6B,CAAC;QAChH,IAAI,OAAO,MAAM,KAAK,UAAU,EAAE;YAC9B,IAAI,CAAC,UAAU,GAAG,MAAM,CAAC;SAC5B;IACL,CAAC;IAED,IAAW,MAAM,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,MAAM,CAAC,CAAC,CAAC;IACnD,IAAW,SAAS,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,SAAS,CAAC,CAAC,CAAC;IACzD,IAAW,UAAU,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,UAAU,CAAC,CAAC,CAAC;IAC3D,IAAW,UAAU,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,UAAU,GAAG,IAAI,CAAC,UAAU,CAAC,UAAU,CAAC,CAAC,CAAC;IACxF,IAAW,cAAc,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,cAAc,GAAG,IAAI,CAAC,UAAU,CAAC,cAAc,CAAC,CAAC,CAAC;IACpG,IAAW,kBAAkB,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,kBAAkB,GAAG,IAAI,CAAC,UAAU,CAAC,kBAAkB,CAAC,CAAC,CAAC;IACzG,OAAO,CAAC,KAA0B,IAAI,OAAO,IAAI,CAAC,OAAO,CAAC,OAAO,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IAC3E,QAAQ,CAAC,KAAa,EAAE,KAAc;QACzC,MAAM,OAAO,GAAG,IAAI,CAAC,OAAO,CAAC;QAC7B,KAAK,GAAG,OAAO,CAAC,QAAQ,CAAC,KAAK,EAAE,KAAK,CAAC,CAAC;QACvC,IAAI,CAAC,MAAM,GAAG,OAAO,CAAC,MAAM,CAAC;QAC7B,OAAO,KAAK,CAAC;IACjB,CAAC;IACM,QAAQ,CAAC,KAAa,EAAE,KAAkB;QAC7C,MAAM,aAAa,GAAG,IAAI,CAAC,cAAc,CAAC;QAC1C,MAAM,GAAG,GAAG,IAAI,CAAC,UAAU,CAAC,KAAK,CAAC,CAAC;QACnC,IAAI,GAAG,GAAG,aAAa,CAAC,GAAG,CAAC,CAAC;QAC7B,IAAI,GAAG,KAAK,SAAS,EAAE;YACnB,aAAa,CAAC,GAAG,CAAC,GAAG,GAAG,GAAG,IAAI,CAAC,iBAAiB,GAAG,IAAI,CAAC,UAAU,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC,MAAM,GAAG,CAAC,CAAC;SAChG;QACD,OAAO,IAAI,CAAC,OAAO,CAAC,QAAQ,CAAC,KAAK,EAAE,GAAG,CAAC,CAAC;IAC7C,CAAC;IACM,KAAK;QACR,MAAM,IAAI,GAAG,IAAI,CAAC,IAAI,CAAC;QACvB,MAAM,IAAI,GAAG,IAAI,CAAC,WAAW,CAAC;QAC9B,MAAM,IAAI,GAAG,IAAI,CAAC,UAAU,CAAC,QAAQ,EAAE,CAAC;QACxC,MAAM,IAAI,GAAG,IAAI,CAAC,OAAO,CAAC,KAAK,EAAE,CAAC,KAAK,CAAC,IAAI,CAAC,CAAC;QAC9C,IAAI,CAAC,UAAU,GAAG,IAAI,CAAC,CAAC,CAAC,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;QAClD,IAAI,CAAC,QAAQ,IAAI,CAAC,IAAI,CAAC,iBAAiB,IAAI,IAAI,CAAC,MAAM,CAAC,CAAC;QACzD,IAAI,CAAC,WAAW,GAAG,IAAI,CAAC,UAAqC,CAAC;QAC9D,IAAI,CAAC,KAAK,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IAChB,CAAC;IACM,MAAM;QACT,IAAI,CAAC,OAAO,CAAC,MAAM,EAAE,CAAC;QACtB,IAAI,CAAC,UAAU,CAAC,MAAM,EAAE,CAAC;QACzB,IAAI,CAAC,iBAAiB,GAAG,CAAC,CAAC;QAC3B,IAAI,CAAC,cAAc,GAAG,MAAM,CAAC,MAAM,CAAC,IAAI,CAAC,CAAC;QAC1C,OAAO,KAAK,CAAC,MAAM,EAAE,CAAC;IAC1B,CAAC;IACM,KAAK;QACR,IAAI,CAAC,OAAO,CAAC,KAAK,EAAE,CAAC;QACrB,IAAI,CAAC,UAAU,CAAC,KAAK,EAAE,CAAC;QACxB,OAAO,KAAK,CAAC,KAAK,EAAE,CAAC;IACzB,CAAC;IACM,UAAU,CAAC,GAAQ;QACtB,OAAO,OAAO,GAAG,KAAK,QAAQ,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,GAAG,EAAE,CAAC;IACpD,CAAC;CACJ;AApED,8CAoEC","file":"dictionary.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/dictionary.mjs b/igv_component/node_modules/apache-arrow/builder/dictionary.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..36f513572cc2d6a793940f243d09f6da8e1cd74f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/dictionary.mjs
@@ -0,0 +1,83 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Dictionary } from '../type.mjs';
+import { Builder } from '../builder.mjs';
+import { makeBuilder } from '../factories.mjs';
+/** @ignore */
+export class DictionaryBuilder extends Builder {
+    constructor({ 'type': type, 'nullValues': nulls, 'dictionaryHashFunction': hashFn }) {
+        super({ type: new Dictionary(type.dictionary, type.indices, type.id, type.isOrdered) });
+        this._nulls = null;
+        this._dictionaryOffset = 0;
+        this._keysToIndices = Object.create(null);
+        this.indices = makeBuilder({ 'type': this.type.indices, 'nullValues': nulls });
+        this.dictionary = makeBuilder({ 'type': this.type.dictionary, 'nullValues': null });
+        if (typeof hashFn === 'function') {
+            this.valueToKey = hashFn;
+        }
+    }
+    get values() { return this.indices.values; }
+    get nullCount() { return this.indices.nullCount; }
+    get nullBitmap() { return this.indices.nullBitmap; }
+    get byteLength() { return this.indices.byteLength + this.dictionary.byteLength; }
+    get reservedLength() { return this.indices.reservedLength + this.dictionary.reservedLength; }
+    get reservedByteLength() { return this.indices.reservedByteLength + this.dictionary.reservedByteLength; }
+    isValid(value) { return this.indices.isValid(value); }
+    setValid(index, valid) {
+        const indices = this.indices;
+        valid = indices.setValid(index, valid);
+        this.length = indices.length;
+        return valid;
+    }
+    setValue(index, value) {
+        const keysToIndices = this._keysToIndices;
+        const key = this.valueToKey(value);
+        let idx = keysToIndices[key];
+        if (idx === undefined) {
+            keysToIndices[key] = idx = this._dictionaryOffset + this.dictionary.append(value).length - 1;
+        }
+        return this.indices.setValue(index, idx);
+    }
+    flush() {
+        const type = this.type;
+        const prev = this._dictionary;
+        const curr = this.dictionary.toVector();
+        const data = this.indices.flush().clone(type);
+        data.dictionary = prev ? prev.concat(curr) : curr;
+        this.finished || (this._dictionaryOffset += curr.length);
+        this._dictionary = data.dictionary;
+        this.clear();
+        return data;
+    }
+    finish() {
+        this.indices.finish();
+        this.dictionary.finish();
+        this._dictionaryOffset = 0;
+        this._keysToIndices = Object.create(null);
+        return super.finish();
+    }
+    clear() {
+        this.indices.clear();
+        this.dictionary.clear();
+        return super.clear();
+    }
+    valueToKey(val) {
+        return typeof val === 'string' ? val : `${val}`;
+    }
+}
+
+//# sourceMappingURL=dictionary.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/dictionary.mjs.map b/igv_component/node_modules/apache-arrow/builder/dictionary.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..24cc0c16cc469269e1d647efd883bea3b4418f8c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/dictionary.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/dictionary.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAIrB,OAAO,EAAE,UAAU,EAAY,MAAM,YAAY,CAAC;AAClD,OAAO,EAAE,OAAO,EAAkB,MAAM,eAAe,CAAC;AACxD,OAAO,EAAE,WAAW,EAAE,MAAM,iBAAiB,CAAC;AAQ9C,cAAc;AACd,MAAM,OAAO,iBAAqD,SAAQ,OAAiB;IAQvF,YAAY,EAAE,MAAM,EAAE,IAAI,EAAE,YAAY,EAAE,KAAK,EAAE,wBAAwB,EAAE,MAAM,EAAsC;QACnH,KAAK,CAAC,EAAE,IAAI,EAAE,IAAI,UAAU,CAAC,IAAI,CAAC,UAAU,EAAE,IAAI,CAAC,OAAO,EAAE,IAAI,CAAC,EAAE,EAAE,IAAI,CAAC,SAAS,CAAM,EAAE,CAAC,CAAC;QAC7F,IAAI,CAAC,MAAM,GAAQ,IAAI,CAAC;QACxB,IAAI,CAAC,iBAAiB,GAAG,CAAC,CAAC;QAC3B,IAAI,CAAC,cAAc,GAAG,MAAM,CAAC,MAAM,CAAC,IAAI,CAAC,CAAC;QAC1C,IAAI,CAAC,OAAO,GAAG,WAAW,CAAC,EAAE,MAAM,EAAE,IAAI,CAAC,IAAI,CAAC,OAAO,EAAE,YAAY,EAAE,KAAK,EAAE,CAA6B,CAAC;QAC3G,IAAI,CAAC,UAAU,GAAG,WAAW,CAAC,EAAE,MAAM,EAAE,IAAI,CAAC,IAAI,CAAC,UAAU,EAAE,YAAY,EAAE,IAAI,EAAE,CAA6B,CAAC;QAChH,IAAI,OAAO,MAAM,KAAK,UAAU,EAAE;YAC9B,IAAI,CAAC,UAAU,GAAG,MAAM,CAAC;SAC5B;IACL,CAAC;IAED,IAAW,MAAM,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,MAAM,CAAC,CAAC,CAAC;IACnD,IAAW,SAAS,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,SAAS,CAAC,CAAC,CAAC;IACzD,IAAW,UAAU,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,UAAU,CAAC,CAAC,CAAC;IAC3D,IAAW,UAAU,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,UAAU,GAAG,IAAI,CAAC,UAAU,CAAC,UAAU,CAAC,CAAC,CAAC;IACxF,IAAW,cAAc,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,cAAc,GAAG,IAAI,CAAC,UAAU,CAAC,cAAc,CAAC,CAAC,CAAC;IACpG,IAAW,kBAAkB,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,kBAAkB,GAAG,IAAI,CAAC,UAAU,CAAC,kBAAkB,CAAC,CAAC,CAAC;IACzG,OAAO,CAAC,KAA0B,IAAI,OAAO,IAAI,CAAC,OAAO,CAAC,OAAO,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IAC3E,QAAQ,CAAC,KAAa,EAAE,KAAc;QACzC,MAAM,OAAO,GAAG,IAAI,CAAC,OAAO,CAAC;QAC7B,KAAK,GAAG,OAAO,CAAC,QAAQ,CAAC,KAAK,EAAE,KAAK,CAAC,CAAC;QACvC,IAAI,CAAC,MAAM,GAAG,OAAO,CAAC,MAAM,CAAC;QAC7B,OAAO,KAAK,CAAC;IACjB,CAAC;IACM,QAAQ,CAAC,KAAa,EAAE,KAAkB;QAC7C,MAAM,aAAa,GAAG,IAAI,CAAC,cAAc,CAAC;QAC1C,MAAM,GAAG,GAAG,IAAI,CAAC,UAAU,CAAC,KAAK,CAAC,CAAC;QACnC,IAAI,GAAG,GAAG,aAAa,CAAC,GAAG,CAAC,CAAC;QAC7B,IAAI,GAAG,KAAK,SAAS,EAAE;YACnB,aAAa,CAAC,GAAG,CAAC,GAAG,GAAG,GAAG,IAAI,CAAC,iBAAiB,GAAG,IAAI,CAAC,UAAU,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC,MAAM,GAAG,CAAC,CAAC;SAChG;QACD,OAAO,IAAI,CAAC,OAAO,CAAC,QAAQ,CAAC,KAAK,EAAE,GAAG,CAAC,CAAC;IAC7C,CAAC;IACM,KAAK;QACR,MAAM,IAAI,GAAG,IAAI,CAAC,IAAI,CAAC;QACvB,MAAM,IAAI,GAAG,IAAI,CAAC,WAAW,CAAC;QAC9B,MAAM,IAAI,GAAG,IAAI,CAAC,UAAU,CAAC,QAAQ,EAAE,CAAC;QACxC,MAAM,IAAI,GAAG,IAAI,CAAC,OAAO,CAAC,KAAK,EAAE,CAAC,KAAK,CAAC,IAAI,CAAC,CAAC;QAC9C,IAAI,CAAC,UAAU,GAAG,IAAI,CAAC,CAAC,CAAC,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;QAClD,IAAI,CAAC,QAAQ,IAAI,CAAC,IAAI,CAAC,iBAAiB,IAAI,IAAI,CAAC,MAAM,CAAC,CAAC;QACzD,IAAI,CAAC,WAAW,GAAG,IAAI,CAAC,UAAqC,CAAC;QAC9D,IAAI,CAAC,KAAK,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IAChB,CAAC;IACM,MAAM;QACT,IAAI,CAAC,OAAO,CAAC,MAAM,EAAE,CAAC;QACtB,IAAI,CAAC,UAAU,CAAC,MAAM,EAAE,CAAC;QACzB,IAAI,CAAC,iBAAiB,GAAG,CAAC,CAAC;QAC3B,IAAI,CAAC,cAAc,GAAG,MAAM,CAAC,MAAM,CAAC,IAAI,CAAC,CAAC;QAC1C,OAAO,KAAK,CAAC,MAAM,EAAE,CAAC;IAC1B,CAAC;IACM,KAAK;QACR,IAAI,CAAC,OAAO,CAAC,KAAK,EAAE,CAAC;QACrB,IAAI,CAAC,UAAU,CAAC,KAAK,EAAE,CAAC;QACxB,OAAO,KAAK,CAAC,KAAK,EAAE,CAAC;IACzB,CAAC;IACM,UAAU,CAAC,GAAQ;QACtB,OAAO,OAAO,GAAG,KAAK,QAAQ,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,GAAG,EAAE,CAAC;IACpD,CAAC;CACJ","file":"dictionary.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.d.ts b/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6087ea2bbd9b9bb4eafbf143d0264926bc4b8c6b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.d.ts
@@ -0,0 +1,5 @@
+import { FixedSizeBinary } from '../type.js';
+import { FixedWidthBuilder } from '../builder.js';
+/** @ignore */
+export declare class FixedSizeBinaryBuilder<TNull = any> extends FixedWidthBuilder<FixedSizeBinary, TNull> {
+}
diff --git a/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.d.ts.map b/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..65087a22d9f8279e9dcdacd3a86a09dbc8123af0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/fixedsizebinary.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,eAAe,EAAE,MAAM,YAAY,CAAC;AAC7C,OAAO,EAAE,iBAAiB,EAAE,MAAM,eAAe,CAAC;AAGlD,cAAc;AACd,qBAAa,sBAAsB,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,iBAAiB,CAAC,eAAe,EAAE,KAAK,CAAC;CAAI","file":"fixedsizebinary.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.js b/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.js
new file mode 100644
index 0000000000000000000000000000000000000000..7b8913489d2fe35af723090c28640be447851cc1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.js
@@ -0,0 +1,28 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.FixedSizeBinaryBuilder = void 0;
+const builder_js_1 = require("../builder.js");
+const set_js_1 = require("../visitor/set.js");
+/** @ignore */
+class FixedSizeBinaryBuilder extends builder_js_1.FixedWidthBuilder {
+}
+exports.FixedSizeBinaryBuilder = FixedSizeBinaryBuilder;
+FixedSizeBinaryBuilder.prototype._setValue = set_js_1.setFixedSizeBinary;
+
+//# sourceMappingURL=fixedsizebinary.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.js.map b/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..d07d9a317df364c36f5c4a8d4111a570939ecbdf
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/fixedsizebinary.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAGrB,8CAAkD;AAClD,8CAAuD;AAEvD,cAAc;AACd,MAAa,sBAAoC,SAAQ,8BAAyC;CAAI;AAAtG,wDAAsG;AAErG,sBAAsB,CAAC,SAAiB,CAAC,SAAS,GAAG,2BAAkB,CAAC","file":"fixedsizebinary.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.mjs b/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..43126b869812807307c9f02b882a701ba29db04c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.mjs
@@ -0,0 +1,24 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { FixedWidthBuilder } from '../builder.mjs';
+import { setFixedSizeBinary } from '../visitor/set.mjs';
+/** @ignore */
+export class FixedSizeBinaryBuilder extends FixedWidthBuilder {
+}
+FixedSizeBinaryBuilder.prototype._setValue = setFixedSizeBinary;
+
+//# sourceMappingURL=fixedsizebinary.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.mjs.map b/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..41d578d610ab514fcc3d5190bf440de4c66c6165
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/fixedsizebinary.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/fixedsizebinary.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAGrB,OAAO,EAAE,iBAAiB,EAAE,MAAM,eAAe,CAAC;AAClD,OAAO,EAAE,kBAAkB,EAAE,MAAM,mBAAmB,CAAC;AAEvD,cAAc;AACd,MAAM,OAAO,sBAAoC,SAAQ,iBAAyC;CAAI;AAErG,sBAAsB,CAAC,SAAiB,CAAC,SAAS,GAAG,kBAAkB,CAAC","file":"fixedsizebinary.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/fixedsizelist.d.ts b/igv_component/node_modules/apache-arrow/builder/fixedsizelist.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..9d12d6e961eb54c2a86ae7ef111b3c990c32e22a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/fixedsizelist.d.ts
@@ -0,0 +1,7 @@
+import { Builder } from '../builder.js';
+import { DataType, FixedSizeList } from '../type.js';
+/** @ignore */
+export declare class FixedSizeListBuilder<T extends DataType = any, TNull = any> extends Builder<FixedSizeList<T>, TNull> {
+    setValue(index: number, value: T['TValue']): void;
+    addChild(child: Builder<T>, name?: string): number;
+}
diff --git a/igv_component/node_modules/apache-arrow/builder/fixedsizelist.d.ts.map b/igv_component/node_modules/apache-arrow/builder/fixedsizelist.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..bbdd0211ff892bd42a30cf42098aec239a815a7c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/fixedsizelist.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/fixedsizelist.ts"],"names":[],"mappings":"AAkBA,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AACxC,OAAO,EAAE,QAAQ,EAAE,aAAa,EAAE,MAAM,YAAY,CAAC;AAErD,cAAc;AACd,qBAAa,oBAAoB,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,OAAO,CAAC,aAAa,CAAC,CAAC,CAAC,EAAE,KAAK,CAAC;IACtG,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC;IAO1C,QAAQ,CAAC,KAAK,EAAE,OAAO,CAAC,CAAC,CAAC,EAAE,IAAI,SAAM;CAQhD","file":"fixedsizelist.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/fixedsizelist.js b/igv_component/node_modules/apache-arrow/builder/fixedsizelist.js
new file mode 100644
index 0000000000000000000000000000000000000000..b09d6e11abfb41d4e78c41d9bbd88b7c731090f6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/fixedsizelist.js
@@ -0,0 +1,43 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.FixedSizeListBuilder = void 0;
+const schema_js_1 = require("../schema.js");
+const builder_js_1 = require("../builder.js");
+const type_js_1 = require("../type.js");
+/** @ignore */
+class FixedSizeListBuilder extends builder_js_1.Builder {
+    setValue(index, value) {
+        const [child] = this.children;
+        const start = index * this.stride;
+        for (let i = -1, n = value.length; ++i < n;) {
+            child.set(start + i, value[i]);
+        }
+    }
+    addChild(child, name = '0') {
+        if (this.numChildren > 0) {
+            throw new Error('FixedSizeListBuilder can only have one child.');
+        }
+        const childIndex = this.children.push(child);
+        this.type = new type_js_1.FixedSizeList(this.type.listSize, new schema_js_1.Field(name, child.type, true));
+        return childIndex;
+    }
+}
+exports.FixedSizeListBuilder = FixedSizeListBuilder;
+
+//# sourceMappingURL=fixedsizelist.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/fixedsizelist.js.map b/igv_component/node_modules/apache-arrow/builder/fixedsizelist.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..296b2929cfdcd28394ea215d3bec0a9de8e410cc
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/fixedsizelist.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/fixedsizelist.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,4CAAqC;AACrC,8CAAwC;AACxC,wCAAqD;AAErD,cAAc;AACd,MAAa,oBAA4D,SAAQ,oBAAgC;IACtG,QAAQ,CAAC,KAAa,EAAE,KAAkB;QAC7C,MAAM,CAAC,KAAK,CAAC,GAAG,IAAI,CAAC,QAAQ,CAAC;QAC9B,MAAM,KAAK,GAAG,KAAK,GAAG,IAAI,CAAC,MAAM,CAAC;QAClC,KAAK,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,GAAG,KAAK,CAAC,MAAM,EAAE,EAAE,CAAC,GAAG,CAAC,GAAG;YACzC,KAAK,CAAC,GAAG,CAAC,KAAK,GAAG,CAAC,EAAE,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC;SAClC;IACL,CAAC;IACM,QAAQ,CAAC,KAAiB,EAAE,IAAI,GAAG,GAAG;QACzC,IAAI,IAAI,CAAC,WAAW,GAAG,CAAC,EAAE;YACtB,MAAM,IAAI,KAAK,CAAC,+CAA+C,CAAC,CAAC;SACpE;QACD,MAAM,UAAU,GAAG,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC;QAC7C,IAAI,CAAC,IAAI,GAAG,IAAI,uBAAa,CAAC,IAAI,CAAC,IAAI,CAAC,QAAQ,EAAE,IAAI,iBAAK,CAAC,IAAI,EAAE,KAAK,CAAC,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC;QACrF,OAAO,UAAU,CAAC;IACtB,CAAC;CACJ;AAhBD,oDAgBC","file":"fixedsizelist.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/fixedsizelist.mjs b/igv_component/node_modules/apache-arrow/builder/fixedsizelist.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..4b08636f156a497775886c06b85606729173365a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/fixedsizelist.mjs
@@ -0,0 +1,39 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Field } from '../schema.mjs';
+import { Builder } from '../builder.mjs';
+import { FixedSizeList } from '../type.mjs';
+/** @ignore */
+export class FixedSizeListBuilder extends Builder {
+    setValue(index, value) {
+        const [child] = this.children;
+        const start = index * this.stride;
+        for (let i = -1, n = value.length; ++i < n;) {
+            child.set(start + i, value[i]);
+        }
+    }
+    addChild(child, name = '0') {
+        if (this.numChildren > 0) {
+            throw new Error('FixedSizeListBuilder can only have one child.');
+        }
+        const childIndex = this.children.push(child);
+        this.type = new FixedSizeList(this.type.listSize, new Field(name, child.type, true));
+        return childIndex;
+    }
+}
+
+//# sourceMappingURL=fixedsizelist.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/fixedsizelist.mjs.map b/igv_component/node_modules/apache-arrow/builder/fixedsizelist.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..6e661dd78154dbb7af99cfe654447309b47e3ef1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/fixedsizelist.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/fixedsizelist.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,EAAE,KAAK,EAAE,MAAM,cAAc,CAAC;AACrC,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AACxC,OAAO,EAAY,aAAa,EAAE,MAAM,YAAY,CAAC;AAErD,cAAc;AACd,MAAM,OAAO,oBAA4D,SAAQ,OAAgC;IACtG,QAAQ,CAAC,KAAa,EAAE,KAAkB;QAC7C,MAAM,CAAC,KAAK,CAAC,GAAG,IAAI,CAAC,QAAQ,CAAC;QAC9B,MAAM,KAAK,GAAG,KAAK,GAAG,IAAI,CAAC,MAAM,CAAC;QAClC,KAAK,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,GAAG,KAAK,CAAC,MAAM,EAAE,EAAE,CAAC,GAAG,CAAC,GAAG;YACzC,KAAK,CAAC,GAAG,CAAC,KAAK,GAAG,CAAC,EAAE,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC;SAClC;IACL,CAAC;IACM,QAAQ,CAAC,KAAiB,EAAE,IAAI,GAAG,GAAG;QACzC,IAAI,IAAI,CAAC,WAAW,GAAG,CAAC,EAAE;YACtB,MAAM,IAAI,KAAK,CAAC,+CAA+C,CAAC,CAAC;SACpE;QACD,MAAM,UAAU,GAAG,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC;QAC7C,IAAI,CAAC,IAAI,GAAG,IAAI,aAAa,CAAC,IAAI,CAAC,IAAI,CAAC,QAAQ,EAAE,IAAI,KAAK,CAAC,IAAI,EAAE,KAAK,CAAC,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC;QACrF,OAAO,UAAU,CAAC;IACtB,CAAC;CACJ","file":"fixedsizelist.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/float.d.ts b/igv_component/node_modules/apache-arrow/builder/float.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..38dda9d345eaed5aec5a7116cb6e47435a3dc916
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/float.d.ts
@@ -0,0 +1,16 @@
+import { FixedWidthBuilder } from '../builder.js';
+import { Float, Float16, Float32, Float64 } from '../type.js';
+/** @ignore */
+export declare class FloatBuilder<T extends Float = Float, TNull = any> extends FixedWidthBuilder<T, TNull> {
+    setValue(index: number, value: number): void;
+}
+/** @ignore */
+export declare class Float16Builder<TNull = any> extends FloatBuilder<Float16, TNull> {
+    setValue(index: number, value: number): void;
+}
+/** @ignore */
+export declare class Float32Builder<TNull = any> extends FloatBuilder<Float32, TNull> {
+}
+/** @ignore */
+export declare class Float64Builder<TNull = any> extends FloatBuilder<Float64, TNull> {
+}
diff --git a/igv_component/node_modules/apache-arrow/builder/float.d.ts.map b/igv_component/node_modules/apache-arrow/builder/float.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..0bef9d6869c382ccc9dbcf4900b88dee042bcf31
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/float.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/float.ts"],"names":[],"mappings":"AAkBA,OAAO,EAAE,iBAAiB,EAAE,MAAM,eAAe,CAAC;AAClD,OAAO,EAAE,KAAK,EAAE,OAAO,EAAE,OAAO,EAAE,OAAO,EAAE,MAAM,YAAY,CAAC;AAE9D,cAAc;AACd,qBAAa,YAAY,CAAC,CAAC,SAAS,KAAK,GAAG,KAAK,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,iBAAiB,CAAC,CAAC,EAAE,KAAK,CAAC;IACxF,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM;CAG/C;AAED,cAAc;AACd,qBAAa,cAAc,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,YAAY,CAAC,OAAO,EAAE,KAAK,CAAC;IAClE,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM;CAI/C;AAED,cAAc;AACd,qBAAa,cAAc,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,YAAY,CAAC,OAAO,EAAE,KAAK,CAAC;CAAI;AAEjF,cAAc;AACd,qBAAa,cAAc,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,YAAY,CAAC,OAAO,EAAE,KAAK,CAAC;CAAI","file":"float.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/float.js b/igv_component/node_modules/apache-arrow/builder/float.js
new file mode 100644
index 0000000000000000000000000000000000000000..555691c062a4c3d79050d3b72037bdd991e434a2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/float.js
@@ -0,0 +1,46 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Float64Builder = exports.Float32Builder = exports.Float16Builder = exports.FloatBuilder = void 0;
+const math_js_1 = require("../util/math.js");
+const builder_js_1 = require("../builder.js");
+/** @ignore */
+class FloatBuilder extends builder_js_1.FixedWidthBuilder {
+    setValue(index, value) {
+        this._values.set(index, value);
+    }
+}
+exports.FloatBuilder = FloatBuilder;
+/** @ignore */
+class Float16Builder extends FloatBuilder {
+    setValue(index, value) {
+        // convert JS float64 to a uint16
+        super.setValue(index, (0, math_js_1.float64ToUint16)(value));
+    }
+}
+exports.Float16Builder = Float16Builder;
+/** @ignore */
+class Float32Builder extends FloatBuilder {
+}
+exports.Float32Builder = Float32Builder;
+/** @ignore */
+class Float64Builder extends FloatBuilder {
+}
+exports.Float64Builder = Float64Builder;
+
+//# sourceMappingURL=float.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/float.js.map b/igv_component/node_modules/apache-arrow/builder/float.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..101fa86450971ee972b325f4fd1365b98a76c7e4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/float.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/float.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,6CAAkD;AAClD,8CAAkD;AAGlD,cAAc;AACd,MAAa,YAAmD,SAAQ,8BAA2B;IACxF,QAAQ,CAAC,KAAa,EAAE,KAAa;QACxC,IAAI,CAAC,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,KAAK,CAAC,CAAC;IACnC,CAAC;CACJ;AAJD,oCAIC;AAED,cAAc;AACd,MAAa,cAA4B,SAAQ,YAA4B;IAClE,QAAQ,CAAC,KAAa,EAAE,KAAa;QACxC,iCAAiC;QACjC,KAAK,CAAC,QAAQ,CAAC,KAAK,EAAE,IAAA,yBAAe,EAAC,KAAK,CAAC,CAAC,CAAC;IAClD,CAAC;CACJ;AALD,wCAKC;AAED,cAAc;AACd,MAAa,cAA4B,SAAQ,YAA4B;CAAI;AAAjF,wCAAiF;AAEjF,cAAc;AACd,MAAa,cAA4B,SAAQ,YAA4B;CAAI;AAAjF,wCAAiF","file":"float.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/float.mjs b/igv_component/node_modules/apache-arrow/builder/float.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..0bb94824833058944cf30e188c7a892c1b206a46
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/float.mjs
@@ -0,0 +1,39 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { float64ToUint16 } from '../util/math.mjs';
+import { FixedWidthBuilder } from '../builder.mjs';
+/** @ignore */
+export class FloatBuilder extends FixedWidthBuilder {
+    setValue(index, value) {
+        this._values.set(index, value);
+    }
+}
+/** @ignore */
+export class Float16Builder extends FloatBuilder {
+    setValue(index, value) {
+        // convert JS float64 to a uint16
+        super.setValue(index, float64ToUint16(value));
+    }
+}
+/** @ignore */
+export class Float32Builder extends FloatBuilder {
+}
+/** @ignore */
+export class Float64Builder extends FloatBuilder {
+}
+
+//# sourceMappingURL=float.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/float.mjs.map b/igv_component/node_modules/apache-arrow/builder/float.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..809ee8960fa58678d27a21cbead54740366a8fa7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/float.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/float.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,EAAE,eAAe,EAAE,MAAM,iBAAiB,CAAC;AAClD,OAAO,EAAE,iBAAiB,EAAE,MAAM,eAAe,CAAC;AAGlD,cAAc;AACd,MAAM,OAAO,YAAmD,SAAQ,iBAA2B;IACxF,QAAQ,CAAC,KAAa,EAAE,KAAa;QACxC,IAAI,CAAC,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,KAAK,CAAC,CAAC;IACnC,CAAC;CACJ;AAED,cAAc;AACd,MAAM,OAAO,cAA4B,SAAQ,YAA4B;IAClE,QAAQ,CAAC,KAAa,EAAE,KAAa;QACxC,iCAAiC;QACjC,KAAK,CAAC,QAAQ,CAAC,KAAK,EAAE,eAAe,CAAC,KAAK,CAAC,CAAC,CAAC;IAClD,CAAC;CACJ;AAED,cAAc;AACd,MAAM,OAAO,cAA4B,SAAQ,YAA4B;CAAI;AAEjF,cAAc;AACd,MAAM,OAAO,cAA4B,SAAQ,YAA4B;CAAI","file":"float.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/int.d.ts b/igv_component/node_modules/apache-arrow/builder/int.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a63c2be4de2f65995f52d4f5d0f4dc12ec835840
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/int.d.ts
@@ -0,0 +1,30 @@
+import { FixedWidthBuilder } from '../builder.js';
+import { Int, Int8, Int16, Int32, Int64, Uint8, Uint16, Uint32, Uint64 } from '../type.js';
+/** @ignore */
+export declare class IntBuilder<T extends Int = Int, TNull = any> extends FixedWidthBuilder<T, TNull> {
+    setValue(index: number, value: T['TValue']): void;
+}
+/** @ignore */
+export declare class Int8Builder<TNull = any> extends IntBuilder<Int8, TNull> {
+}
+/** @ignore */
+export declare class Int16Builder<TNull = any> extends IntBuilder<Int16, TNull> {
+}
+/** @ignore */
+export declare class Int32Builder<TNull = any> extends IntBuilder<Int32, TNull> {
+}
+/** @ignore */
+export declare class Int64Builder<TNull = any> extends IntBuilder<Int64, TNull> {
+}
+/** @ignore */
+export declare class Uint8Builder<TNull = any> extends IntBuilder<Uint8, TNull> {
+}
+/** @ignore */
+export declare class Uint16Builder<TNull = any> extends IntBuilder<Uint16, TNull> {
+}
+/** @ignore */
+export declare class Uint32Builder<TNull = any> extends IntBuilder<Uint32, TNull> {
+}
+/** @ignore */
+export declare class Uint64Builder<TNull = any> extends IntBuilder<Uint64, TNull> {
+}
diff --git a/igv_component/node_modules/apache-arrow/builder/int.d.ts.map b/igv_component/node_modules/apache-arrow/builder/int.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..0a8181fa84b8cc46b574387ed9a4d085a69455ab
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/int.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/int.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,iBAAiB,EAAE,MAAM,eAAe,CAAC;AAClD,OAAO,EAAE,GAAG,EAAE,IAAI,EAAE,KAAK,EAAE,KAAK,EAAE,KAAK,EAAE,KAAK,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,YAAY,CAAC;AAE3F,cAAc;AACd,qBAAa,UAAU,CAAC,CAAC,SAAS,GAAG,GAAG,GAAG,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,iBAAiB,CAAC,CAAC,EAAE,KAAK,CAAC;IAClF,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC;CAGpD;AAED,cAAc;AACd,qBAAa,WAAW,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,UAAU,CAAC,IAAI,EAAE,KAAK,CAAC;CAAI;AACzE,cAAc;AACd,qBAAa,YAAY,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,UAAU,CAAC,KAAK,EAAE,KAAK,CAAC;CAAI;AAC3E,cAAc;AACd,qBAAa,YAAY,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,UAAU,CAAC,KAAK,EAAE,KAAK,CAAC;CAAI;AAC3E,cAAc;AACd,qBAAa,YAAY,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,UAAU,CAAC,KAAK,EAAE,KAAK,CAAC;CAAI;AAE3E,cAAc;AACd,qBAAa,YAAY,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,UAAU,CAAC,KAAK,EAAE,KAAK,CAAC;CAAI;AAC3E,cAAc;AACd,qBAAa,aAAa,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,UAAU,CAAC,MAAM,EAAE,KAAK,CAAC;CAAI;AAC7E,cAAc;AACd,qBAAa,aAAa,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,UAAU,CAAC,MAAM,EAAE,KAAK,CAAC;CAAI;AAC7E,cAAc;AACd,qBAAa,aAAa,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,UAAU,CAAC,MAAM,EAAE,KAAK,CAAC;CAAI","file":"int.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/int.js b/igv_component/node_modules/apache-arrow/builder/int.js
new file mode 100644
index 0000000000000000000000000000000000000000..f747864dfb1137de9a61520a65067f1d3403bb42
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/int.js
@@ -0,0 +1,61 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Uint64Builder = exports.Uint32Builder = exports.Uint16Builder = exports.Uint8Builder = exports.Int64Builder = exports.Int32Builder = exports.Int16Builder = exports.Int8Builder = exports.IntBuilder = void 0;
+const builder_js_1 = require("../builder.js");
+/** @ignore */
+class IntBuilder extends builder_js_1.FixedWidthBuilder {
+    setValue(index, value) {
+        this._values.set(index, value);
+    }
+}
+exports.IntBuilder = IntBuilder;
+/** @ignore */
+class Int8Builder extends IntBuilder {
+}
+exports.Int8Builder = Int8Builder;
+/** @ignore */
+class Int16Builder extends IntBuilder {
+}
+exports.Int16Builder = Int16Builder;
+/** @ignore */
+class Int32Builder extends IntBuilder {
+}
+exports.Int32Builder = Int32Builder;
+/** @ignore */
+class Int64Builder extends IntBuilder {
+}
+exports.Int64Builder = Int64Builder;
+/** @ignore */
+class Uint8Builder extends IntBuilder {
+}
+exports.Uint8Builder = Uint8Builder;
+/** @ignore */
+class Uint16Builder extends IntBuilder {
+}
+exports.Uint16Builder = Uint16Builder;
+/** @ignore */
+class Uint32Builder extends IntBuilder {
+}
+exports.Uint32Builder = Uint32Builder;
+/** @ignore */
+class Uint64Builder extends IntBuilder {
+}
+exports.Uint64Builder = Uint64Builder;
+
+//# sourceMappingURL=int.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/int.js.map b/igv_component/node_modules/apache-arrow/builder/int.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..6390f3654278b52d99db4923cc3b7aeeea670ee3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/int.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/int.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,8CAAkD;AAGlD,cAAc;AACd,MAAa,UAA6C,SAAQ,8BAA2B;IAClF,QAAQ,CAAC,KAAa,EAAE,KAAkB;QAC7C,IAAI,CAAC,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,KAAK,CAAC,CAAC;IACnC,CAAC;CACJ;AAJD,gCAIC;AAED,cAAc;AACd,MAAa,WAAyB,SAAQ,UAAuB;CAAI;AAAzE,kCAAyE;AACzE,cAAc;AACd,MAAa,YAA0B,SAAQ,UAAwB;CAAI;AAA3E,oCAA2E;AAC3E,cAAc;AACd,MAAa,YAA0B,SAAQ,UAAwB;CAAI;AAA3E,oCAA2E;AAC3E,cAAc;AACd,MAAa,YAA0B,SAAQ,UAAwB;CAAI;AAA3E,oCAA2E;AAE3E,cAAc;AACd,MAAa,YAA0B,SAAQ,UAAwB;CAAI;AAA3E,oCAA2E;AAC3E,cAAc;AACd,MAAa,aAA2B,SAAQ,UAAyB;CAAI;AAA7E,sCAA6E;AAC7E,cAAc;AACd,MAAa,aAA2B,SAAQ,UAAyB;CAAI;AAA7E,sCAA6E;AAC7E,cAAc;AACd,MAAa,aAA2B,SAAQ,UAAyB;CAAI;AAA7E,sCAA6E","file":"int.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/int.mjs b/igv_component/node_modules/apache-arrow/builder/int.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..dd452ab8265a18f9fa19f270a13d3314e9bcdfec
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/int.mjs
@@ -0,0 +1,49 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { FixedWidthBuilder } from '../builder.mjs';
+/** @ignore */
+export class IntBuilder extends FixedWidthBuilder {
+    setValue(index, value) {
+        this._values.set(index, value);
+    }
+}
+/** @ignore */
+export class Int8Builder extends IntBuilder {
+}
+/** @ignore */
+export class Int16Builder extends IntBuilder {
+}
+/** @ignore */
+export class Int32Builder extends IntBuilder {
+}
+/** @ignore */
+export class Int64Builder extends IntBuilder {
+}
+/** @ignore */
+export class Uint8Builder extends IntBuilder {
+}
+/** @ignore */
+export class Uint16Builder extends IntBuilder {
+}
+/** @ignore */
+export class Uint32Builder extends IntBuilder {
+}
+/** @ignore */
+export class Uint64Builder extends IntBuilder {
+}
+
+//# sourceMappingURL=int.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/int.mjs.map b/igv_component/node_modules/apache-arrow/builder/int.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..422ab5177ec2142481a13f7555ad789184e7c46d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/int.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/int.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,EAAE,iBAAiB,EAAE,MAAM,eAAe,CAAC;AAGlD,cAAc;AACd,MAAM,OAAO,UAA6C,SAAQ,iBAA2B;IAClF,QAAQ,CAAC,KAAa,EAAE,KAAkB;QAC7C,IAAI,CAAC,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,KAAK,CAAC,CAAC;IACnC,CAAC;CACJ;AAED,cAAc;AACd,MAAM,OAAO,WAAyB,SAAQ,UAAuB;CAAI;AACzE,cAAc;AACd,MAAM,OAAO,YAA0B,SAAQ,UAAwB;CAAI;AAC3E,cAAc;AACd,MAAM,OAAO,YAA0B,SAAQ,UAAwB;CAAI;AAC3E,cAAc;AACd,MAAM,OAAO,YAA0B,SAAQ,UAAwB;CAAI;AAE3E,cAAc;AACd,MAAM,OAAO,YAA0B,SAAQ,UAAwB;CAAI;AAC3E,cAAc;AACd,MAAM,OAAO,aAA2B,SAAQ,UAAyB;CAAI;AAC7E,cAAc;AACd,MAAM,OAAO,aAA2B,SAAQ,UAAyB;CAAI;AAC7E,cAAc;AACd,MAAM,OAAO,aAA2B,SAAQ,UAAyB;CAAI","file":"int.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/interval.d.ts b/igv_component/node_modules/apache-arrow/builder/interval.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..608535007f7556819a6f3762a90929f263d2cacd
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/interval.d.ts
@@ -0,0 +1,11 @@
+import { FixedWidthBuilder } from '../builder.js';
+import { Interval, IntervalDayTime, IntervalYearMonth } from '../type.js';
+/** @ignore */
+export declare class IntervalBuilder<T extends Interval = Interval, TNull = any> extends FixedWidthBuilder<T, TNull> {
+}
+/** @ignore */
+export declare class IntervalDayTimeBuilder<TNull = any> extends IntervalBuilder<IntervalDayTime, TNull> {
+}
+/** @ignore */
+export declare class IntervalYearMonthBuilder<TNull = any> extends IntervalBuilder<IntervalYearMonth, TNull> {
+}
diff --git a/igv_component/node_modules/apache-arrow/builder/interval.d.ts.map b/igv_component/node_modules/apache-arrow/builder/interval.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..d290a425dcb6b4a5b4aa641c79d55dea1fee7dce
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/interval.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/interval.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,iBAAiB,EAAE,MAAM,eAAe,CAAC;AAClD,OAAO,EAAE,QAAQ,EAAE,eAAe,EAAE,iBAAiB,EAAE,MAAM,YAAY,CAAC;AAG1E,cAAc;AACd,qBAAa,eAAe,CAAC,CAAC,SAAS,QAAQ,GAAG,QAAQ,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,iBAAiB,CAAC,CAAC,EAAE,KAAK,CAAC;CAAI;AAIhH,cAAc;AACd,qBAAa,sBAAsB,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,eAAe,CAAC,eAAe,EAAE,KAAK,CAAC;CAAI;AAIpG,cAAc;AACd,qBAAa,wBAAwB,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,eAAe,CAAC,iBAAiB,EAAE,KAAK,CAAC;CAAI","file":"interval.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/interval.js b/igv_component/node_modules/apache-arrow/builder/interval.js
new file mode 100644
index 0000000000000000000000000000000000000000..504982db40fbc4772b4888cb6a6f68ee8634b8ae
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/interval.js
@@ -0,0 +1,38 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.IntervalYearMonthBuilder = exports.IntervalDayTimeBuilder = exports.IntervalBuilder = void 0;
+const builder_js_1 = require("../builder.js");
+const set_js_1 = require("../visitor/set.js");
+/** @ignore */
+class IntervalBuilder extends builder_js_1.FixedWidthBuilder {
+}
+exports.IntervalBuilder = IntervalBuilder;
+IntervalBuilder.prototype._setValue = set_js_1.setIntervalValue;
+/** @ignore */
+class IntervalDayTimeBuilder extends IntervalBuilder {
+}
+exports.IntervalDayTimeBuilder = IntervalDayTimeBuilder;
+IntervalDayTimeBuilder.prototype._setValue = set_js_1.setIntervalDayTime;
+/** @ignore */
+class IntervalYearMonthBuilder extends IntervalBuilder {
+}
+exports.IntervalYearMonthBuilder = IntervalYearMonthBuilder;
+IntervalYearMonthBuilder.prototype._setValue = set_js_1.setIntervalYearMonth;
+
+//# sourceMappingURL=interval.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/interval.js.map b/igv_component/node_modules/apache-arrow/builder/interval.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..08c6ef7ba44c22532bace7d27f6aad538fcb1991
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/interval.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/interval.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,8CAAkD;AAElD,8CAA+F;AAE/F,cAAc;AACd,MAAa,eAA4D,SAAQ,8BAA2B;CAAI;AAAhH,0CAAgH;AAE/G,eAAe,CAAC,SAAiB,CAAC,SAAS,GAAG,yBAAgB,CAAC;AAEhE,cAAc;AACd,MAAa,sBAAoC,SAAQ,eAAuC;CAAI;AAApG,wDAAoG;AAEnG,sBAAsB,CAAC,SAAiB,CAAC,SAAS,GAAG,2BAAkB,CAAC;AAEzE,cAAc;AACd,MAAa,wBAAsC,SAAQ,eAAyC;CAAI;AAAxG,4DAAwG;AAEvG,wBAAwB,CAAC,SAAiB,CAAC,SAAS,GAAG,6BAAoB,CAAC","file":"interval.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/interval.mjs b/igv_component/node_modules/apache-arrow/builder/interval.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..870f1f3313f0f2c926382575ca4468bc796f2f33
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/interval.mjs
@@ -0,0 +1,32 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { FixedWidthBuilder } from '../builder.mjs';
+import { setIntervalValue, setIntervalDayTime, setIntervalYearMonth } from '../visitor/set.mjs';
+/** @ignore */
+export class IntervalBuilder extends FixedWidthBuilder {
+}
+IntervalBuilder.prototype._setValue = setIntervalValue;
+/** @ignore */
+export class IntervalDayTimeBuilder extends IntervalBuilder {
+}
+IntervalDayTimeBuilder.prototype._setValue = setIntervalDayTime;
+/** @ignore */
+export class IntervalYearMonthBuilder extends IntervalBuilder {
+}
+IntervalYearMonthBuilder.prototype._setValue = setIntervalYearMonth;
+
+//# sourceMappingURL=interval.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/interval.mjs.map b/igv_component/node_modules/apache-arrow/builder/interval.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..73c178bab2eb850e62cc603809178ff470825bf9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/interval.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/interval.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,EAAE,iBAAiB,EAAE,MAAM,eAAe,CAAC;AAElD,OAAO,EAAE,gBAAgB,EAAE,kBAAkB,EAAE,oBAAoB,EAAE,MAAM,mBAAmB,CAAC;AAE/F,cAAc;AACd,MAAM,OAAO,eAA4D,SAAQ,iBAA2B;CAAI;AAE/G,eAAe,CAAC,SAAiB,CAAC,SAAS,GAAG,gBAAgB,CAAC;AAEhE,cAAc;AACd,MAAM,OAAO,sBAAoC,SAAQ,eAAuC;CAAI;AAEnG,sBAAsB,CAAC,SAAiB,CAAC,SAAS,GAAG,kBAAkB,CAAC;AAEzE,cAAc;AACd,MAAM,OAAO,wBAAsC,SAAQ,eAAyC;CAAI;AAEvG,wBAAwB,CAAC,SAAiB,CAAC,SAAS,GAAG,oBAAoB,CAAC","file":"interval.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/list.d.ts b/igv_component/node_modules/apache-arrow/builder/list.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..0b7ca27aad76211588f53d88cf7391ecf47ff2ba
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/list.d.ts
@@ -0,0 +1,10 @@
+import { DataType, List } from '../type.js';
+import { OffsetsBufferBuilder } from './buffer.js';
+import { Builder, BuilderOptions, VariableWidthBuilder } from '../builder.js';
+/** @ignore */
+export declare class ListBuilder<T extends DataType = any, TNull = any> extends VariableWidthBuilder<List<T>, TNull> {
+    protected _offsets: OffsetsBufferBuilder;
+    constructor(opts: BuilderOptions<List<T>, TNull>);
+    addChild(child: Builder<T>, name?: string): number;
+    protected _flushPending(pending: Map<number, T['TValue'] | undefined>): void;
+}
diff --git a/igv_component/node_modules/apache-arrow/builder/list.d.ts.map b/igv_component/node_modules/apache-arrow/builder/list.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..260f51b87356495ebc6b7e0aeeea26146ceed6bf
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/list.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/list.ts"],"names":[],"mappings":"AAkBA,OAAO,EAAE,QAAQ,EAAE,IAAI,EAAE,MAAM,YAAY,CAAC;AAC5C,OAAO,EAAE,oBAAoB,EAAE,MAAM,aAAa,CAAC;AACnD,OAAO,EAAE,OAAO,EAAE,cAAc,EAAE,oBAAoB,EAAE,MAAM,eAAe,CAAC;AAE9E,cAAc;AACd,qBAAa,WAAW,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,oBAAoB,CAAC,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,CAAC;IACxG,SAAS,CAAC,QAAQ,EAAE,oBAAoB,CAAC;gBAC7B,IAAI,EAAE,cAAc,CAAC,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,CAAC;IAIzC,QAAQ,CAAC,KAAK,EAAE,OAAO,CAAC,CAAC,CAAC,EAAE,IAAI,SAAM;IAQ7C,SAAS,CAAC,aAAa,CAAC,OAAO,EAAE,GAAG,CAAC,MAAM,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,SAAS,CAAC;CAexE","file":"list.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/list.js b/igv_component/node_modules/apache-arrow/builder/list.js
new file mode 100644
index 0000000000000000000000000000000000000000..ebd77e0fe2c6b31de4e06bf76227bb2884c58f48
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/list.js
@@ -0,0 +1,57 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ListBuilder = void 0;
+const schema_js_1 = require("../schema.js");
+const type_js_1 = require("../type.js");
+const buffer_js_1 = require("./buffer.js");
+const builder_js_1 = require("../builder.js");
+/** @ignore */
+class ListBuilder extends builder_js_1.VariableWidthBuilder {
+    constructor(opts) {
+        super(opts);
+        this._offsets = new buffer_js_1.OffsetsBufferBuilder();
+    }
+    addChild(child, name = '0') {
+        if (this.numChildren > 0) {
+            throw new Error('ListBuilder can only have one child.');
+        }
+        this.children[this.numChildren] = child;
+        this.type = new type_js_1.List(new schema_js_1.Field(name, child.type, true));
+        return this.numChildren - 1;
+    }
+    _flushPending(pending) {
+        const offsets = this._offsets;
+        const [child] = this.children;
+        for (const [index, value] of pending) {
+            if (typeof value === 'undefined') {
+                offsets.set(index, 0);
+            }
+            else {
+                const n = value.length;
+                const start = offsets.set(index, n).buffer[index];
+                for (let i = -1; ++i < n;) {
+                    child.set(start + i, value[i]);
+                }
+            }
+        }
+    }
+}
+exports.ListBuilder = ListBuilder;
+
+//# sourceMappingURL=list.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/list.js.map b/igv_component/node_modules/apache-arrow/builder/list.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..79f52174e232b91bba76b97d9af105108f301bcc
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/list.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/list.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,4CAAqC;AACrC,wCAA4C;AAC5C,2CAAmD;AACnD,8CAA8E;AAE9E,cAAc;AACd,MAAa,WAAmD,SAAQ,iCAAoC;IAExG,YAAY,IAAoC;QAC5C,KAAK,CAAC,IAAI,CAAC,CAAC;QACZ,IAAI,CAAC,QAAQ,GAAG,IAAI,gCAAoB,EAAE,CAAC;IAC/C,CAAC;IACM,QAAQ,CAAC,KAAiB,EAAE,IAAI,GAAG,GAAG;QACzC,IAAI,IAAI,CAAC,WAAW,GAAG,CAAC,EAAE;YACtB,MAAM,IAAI,KAAK,CAAC,sCAAsC,CAAC,CAAC;SAC3D;QACD,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,WAAW,CAAC,GAAG,KAAK,CAAC;QACxC,IAAI,CAAC,IAAI,GAAG,IAAI,cAAI,CAAC,IAAI,iBAAK,CAAC,IAAI,EAAE,KAAK,CAAC,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC;QACxD,OAAO,IAAI,CAAC,WAAW,GAAG,CAAC,CAAC;IAChC,CAAC;IACS,aAAa,CAAC,OAA6C;QACjE,MAAM,OAAO,GAAG,IAAI,CAAC,QAAQ,CAAC;QAC9B,MAAM,CAAC,KAAK,CAAC,GAAG,IAAI,CAAC,QAAQ,CAAC;QAC9B,KAAK,MAAM,CAAC,KAAK,EAAE,KAAK,CAAC,IAAI,OAAO,EAAE;YAClC,IAAI,OAAO,KAAK,KAAK,WAAW,EAAE;gBAC9B,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;aACzB;iBAAM;gBACH,MAAM,CAAC,GAAG,KAAK,CAAC,MAAM,CAAC;gBACvB,MAAM,KAAK,GAAG,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC;gBAClD,KAAK,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,EAAE,CAAC,GAAG,CAAC,GAAG;oBACvB,KAAK,CAAC,GAAG,CAAC,KAAK,GAAG,CAAC,EAAE,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC;iBAClC;aACJ;SACJ;IACL,CAAC;CACJ;AA7BD,kCA6BC","file":"list.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/list.mjs b/igv_component/node_modules/apache-arrow/builder/list.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..e3782e3da2659154564b314f6967e3f2d381b5bc
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/list.mjs
@@ -0,0 +1,53 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Field } from '../schema.mjs';
+import { List } from '../type.mjs';
+import { OffsetsBufferBuilder } from './buffer.mjs';
+import { VariableWidthBuilder } from '../builder.mjs';
+/** @ignore */
+export class ListBuilder extends VariableWidthBuilder {
+    constructor(opts) {
+        super(opts);
+        this._offsets = new OffsetsBufferBuilder();
+    }
+    addChild(child, name = '0') {
+        if (this.numChildren > 0) {
+            throw new Error('ListBuilder can only have one child.');
+        }
+        this.children[this.numChildren] = child;
+        this.type = new List(new Field(name, child.type, true));
+        return this.numChildren - 1;
+    }
+    _flushPending(pending) {
+        const offsets = this._offsets;
+        const [child] = this.children;
+        for (const [index, value] of pending) {
+            if (typeof value === 'undefined') {
+                offsets.set(index, 0);
+            }
+            else {
+                const n = value.length;
+                const start = offsets.set(index, n).buffer[index];
+                for (let i = -1; ++i < n;) {
+                    child.set(start + i, value[i]);
+                }
+            }
+        }
+    }
+}
+
+//# sourceMappingURL=list.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/list.mjs.map b/igv_component/node_modules/apache-arrow/builder/list.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..3f5ee0981d0f5163e48dd952f9058f4c96839d78
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/list.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/list.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,EAAE,KAAK,EAAE,MAAM,cAAc,CAAC;AACrC,OAAO,EAAY,IAAI,EAAE,MAAM,YAAY,CAAC;AAC5C,OAAO,EAAE,oBAAoB,EAAE,MAAM,aAAa,CAAC;AACnD,OAAO,EAA2B,oBAAoB,EAAE,MAAM,eAAe,CAAC;AAE9E,cAAc;AACd,MAAM,OAAO,WAAmD,SAAQ,oBAAoC;IAExG,YAAY,IAAoC;QAC5C,KAAK,CAAC,IAAI,CAAC,CAAC;QACZ,IAAI,CAAC,QAAQ,GAAG,IAAI,oBAAoB,EAAE,CAAC;IAC/C,CAAC;IACM,QAAQ,CAAC,KAAiB,EAAE,IAAI,GAAG,GAAG;QACzC,IAAI,IAAI,CAAC,WAAW,GAAG,CAAC,EAAE;YACtB,MAAM,IAAI,KAAK,CAAC,sCAAsC,CAAC,CAAC;SAC3D;QACD,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,WAAW,CAAC,GAAG,KAAK,CAAC;QACxC,IAAI,CAAC,IAAI,GAAG,IAAI,IAAI,CAAC,IAAI,KAAK,CAAC,IAAI,EAAE,KAAK,CAAC,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC;QACxD,OAAO,IAAI,CAAC,WAAW,GAAG,CAAC,CAAC;IAChC,CAAC;IACS,aAAa,CAAC,OAA6C;QACjE,MAAM,OAAO,GAAG,IAAI,CAAC,QAAQ,CAAC;QAC9B,MAAM,CAAC,KAAK,CAAC,GAAG,IAAI,CAAC,QAAQ,CAAC;QAC9B,KAAK,MAAM,CAAC,KAAK,EAAE,KAAK,CAAC,IAAI,OAAO,EAAE;YAClC,IAAI,OAAO,KAAK,KAAK,WAAW,EAAE;gBAC9B,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;aACzB;iBAAM;gBACH,MAAM,CAAC,GAAG,KAAK,CAAC,MAAM,CAAC;gBACvB,MAAM,KAAK,GAAG,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC;gBAClD,KAAK,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,EAAE,CAAC,GAAG,CAAC,GAAG;oBACvB,KAAK,CAAC,GAAG,CAAC,KAAK,GAAG,CAAC,EAAE,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC;iBAClC;aACJ;SACJ;IACL,CAAC;CACJ","file":"list.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/map.d.ts b/igv_component/node_modules/apache-arrow/builder/map.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..63941a393e49db2c4c0c6367adaf0acc279807d6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/map.d.ts
@@ -0,0 +1,21 @@
+import { DataType, Map_, Struct } from '../type.js';
+import { Builder, VariableWidthBuilder } from '../builder.js';
+/** @ignore */ declare type MapValue<K extends DataType = any, V extends DataType = any> = Map_<K, V>['TValue'];
+/** @ignore */ declare type MapValues<K extends DataType = any, V extends DataType = any> = Map<number, MapValue<K, V> | undefined>;
+/** @ignore */ declare type MapValueExt<K extends DataType = any, V extends DataType = any> = MapValue<K, V> | {
+    [key: string]: V;
+} | {
+    [key: number]: V;
+};
+/** @ignore */
+export declare class MapBuilder<K extends DataType = any, V extends DataType = any, TNull = any> extends VariableWidthBuilder<Map_<K, V>, TNull> {
+    protected _pending: MapValues<K, V> | undefined;
+    set(index: number, value: MapValueExt<K, V> | TNull): this;
+    setValue(index: number, value: MapValueExt<K, V>): void;
+    addChild(child: Builder<Struct<{
+        key: K;
+        value: V;
+    }>>, name?: string): number;
+    protected _flushPending(pending: MapValues<K, V>): void;
+}
+export {};
diff --git a/igv_component/node_modules/apache-arrow/builder/map.d.ts.map b/igv_component/node_modules/apache-arrow/builder/map.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..8fc8650716d1d670a74ad1d5e6bee94e62317830
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/map.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/map.ts"],"names":[],"mappings":"AAkBA,OAAO,EAAE,QAAQ,EAAE,IAAI,EAAE,MAAM,EAAE,MAAM,YAAY,CAAC;AACpD,OAAO,EAAE,OAAO,EAAE,oBAAoB,EAAE,MAAM,eAAe,CAAC;AAE9D,cAAc,CAAC,aAAK,QAAQ,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,CAAC,SAAS,QAAQ,GAAG,GAAG,IAAI,IAAI,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,QAAQ,CAAC,CAAC;AACxG,cAAc,CAAC,aAAK,SAAS,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,CAAC,SAAS,QAAQ,GAAG,GAAG,IAAI,GAAG,CAAC,MAAM,EAAE,QAAQ,CAAC,CAAC,EAAE,CAAC,CAAC,GAAG,SAAS,CAAC,CAAC;AAC5H,cAAc,CAAC,aAAK,WAAW,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,CAAC,SAAS,QAAQ,GAAG,GAAG,IAAI,QAAQ,CAAC,CAAC,EAAE,CAAC,CAAC,GAAG;IAAE,CAAC,GAAG,EAAE,MAAM,GAAG,CAAC,CAAA;CAAE,GAAG;IAAE,CAAC,GAAG,EAAE,MAAM,GAAG,CAAC,CAAA;CAAE,CAAC;AAEnJ,cAAc;AACd,qBAAa,UAAU,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,oBAAoB,CAAC,IAAI,CAAC,CAAC,EAAE,CAAC,CAAC,EAAE,KAAK,CAAC;IAEpI,UAAkB,QAAQ,EAAE,SAAS,CAAC,CAAC,EAAE,CAAC,CAAC,GAAG,SAAS,CAAC;IACjD,GAAG,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,WAAW,CAAC,CAAC,EAAE,CAAC,CAAC,GAAG,KAAK;IAInD,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,WAAW,CAAC,CAAC,EAAE,CAAC,CAAC;IAShD,QAAQ,CAAC,KAAK,EAAE,OAAO,CAAC,MAAM,CAAC;QAAE,GAAG,EAAE,CAAC,CAAC;QAAC,KAAK,EAAE,CAAC,CAAA;KAAE,CAAC,CAAC,EAAE,IAAI,SAAwB;IAS1F,SAAS,CAAC,aAAa,CAAC,OAAO,EAAE,SAAS,CAAC,CAAC,EAAE,CAAC,CAAC;CAkBnD","file":"map.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/map.js b/igv_component/node_modules/apache-arrow/builder/map.js
new file mode 100644
index 0000000000000000000000000000000000000000..7781cb79bbff6385ca176da752c6278f561e72b8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/map.js
@@ -0,0 +1,64 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.MapBuilder = void 0;
+const schema_js_1 = require("../schema.js");
+const type_js_1 = require("../type.js");
+const builder_js_1 = require("../builder.js");
+/** @ignore */
+class MapBuilder extends builder_js_1.VariableWidthBuilder {
+    set(index, value) {
+        return super.set(index, value);
+    }
+    setValue(index, value) {
+        const row = (value instanceof Map ? value : new Map(Object.entries(value)));
+        const pending = this._pending || (this._pending = new Map());
+        const current = pending.get(index);
+        current && (this._pendingLength -= current.size);
+        this._pendingLength += row.size;
+        pending.set(index, row);
+    }
+    addChild(child, name = `${this.numChildren}`) {
+        if (this.numChildren > 0) {
+            throw new Error('ListBuilder can only have one child.');
+        }
+        this.children[this.numChildren] = child;
+        this.type = new type_js_1.Map_(new schema_js_1.Field(name, child.type, true), this.type.keysSorted);
+        return this.numChildren - 1;
+    }
+    _flushPending(pending) {
+        const offsets = this._offsets;
+        const [child] = this.children;
+        for (const [index, value] of pending) {
+            if (value === undefined) {
+                offsets.set(index, 0);
+            }
+            else {
+                let { [index]: idx, [index + 1]: end } = offsets.set(index, value.size).buffer;
+                for (const val of value.entries()) {
+                    child.set(idx, val);
+                    if (++idx >= end)
+                        break;
+                }
+            }
+        }
+    }
+}
+exports.MapBuilder = MapBuilder;
+
+//# sourceMappingURL=map.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/map.js.map b/igv_component/node_modules/apache-arrow/builder/map.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..ee0dea5b90148b24cd9dbff595c771336a560e09
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/map.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/map.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,4CAAqC;AACrC,wCAAoD;AACpD,8CAA8D;AAM9D,cAAc;AACd,MAAa,UAA4E,SAAQ,iCAAuC;IAG7H,GAAG,CAAC,KAAa,EAAE,KAAgC;QACtD,OAAO,KAAK,CAAC,GAAG,CAAC,KAAK,EAAE,KAA+B,CAAC,CAAC;IAC7D,CAAC;IAEM,QAAQ,CAAC,KAAa,EAAE,KAAwB;QACnD,MAAM,GAAG,GAAG,CAAC,KAAK,YAAY,GAAG,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC,IAAI,GAAG,CAAC,MAAM,CAAC,OAAO,CAAC,KAAK,CAAC,CAAC,CAAmB,CAAC;QAC9F,MAAM,OAAO,GAAG,IAAI,CAAC,QAAQ,IAAI,CAAC,IAAI,CAAC,QAAQ,GAAG,IAAI,GAAG,EAAqB,CAAC,CAAC;QAChF,MAAM,OAAO,GAAG,OAAO,CAAC,GAAG,CAAC,KAAK,CAA0B,CAAC;QAC5D,OAAO,IAAI,CAAC,IAAI,CAAC,cAAc,IAAI,OAAO,CAAC,IAAI,CAAC,CAAC;QACjD,IAAI,CAAC,cAAc,IAAI,GAAG,CAAC,IAAI,CAAC;QAChC,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,GAAG,CAAC,CAAC;IAC5B,CAAC;IAEM,QAAQ,CAAC,KAA4C,EAAE,IAAI,GAAG,GAAG,IAAI,CAAC,WAAW,EAAE;QACtF,IAAI,IAAI,CAAC,WAAW,GAAG,CAAC,EAAE;YACtB,MAAM,IAAI,KAAK,CAAC,sCAAsC,CAAC,CAAC;SAC3D;QACD,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,WAAW,CAAC,GAAG,KAAK,CAAC;QACxC,IAAI,CAAC,IAAI,GAAG,IAAI,cAAI,CAAO,IAAI,iBAAK,CAAC,IAAI,EAAE,KAAK,CAAC,IAAI,EAAE,IAAI,CAAC,EAAE,IAAI,CAAC,IAAI,CAAC,UAAU,CAAC,CAAC;QACpF,OAAO,IAAI,CAAC,WAAW,GAAG,CAAC,CAAC;IAChC,CAAC;IAES,aAAa,CAAC,OAAwB;QAC5C,MAAM,OAAO,GAAG,IAAI,CAAC,QAAQ,CAAC;QAC9B,MAAM,CAAC,KAAK,CAAC,GAAG,IAAI,CAAC,QAAQ,CAAC;QAC9B,KAAK,MAAM,CAAC,KAAK,EAAE,KAAK,CAAC,IAAI,OAAO,EAAE;YAClC,IAAI,KAAK,KAAK,SAAS,EAAE;gBACrB,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;aACzB;iBAAM;gBACH,IAAI,EACA,CAAC,KAAK,CAAC,EAAE,GAAG,EACZ,CAAC,KAAK,GAAG,CAAC,CAAC,EAAE,GAAG,EACnB,GAAG,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,KAAK,CAAC,IAAI,CAAC,CAAC,MAAM,CAAC;gBAC1C,KAAK,MAAM,GAAG,IAAI,KAAK,CAAC,OAAO,EAAE,EAAE;oBAC/B,KAAK,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,CAAC,CAAC;oBACpB,IAAI,EAAE,GAAG,IAAI,GAAG;wBAAE,MAAM;iBAC3B;aACJ;SACJ;IACL,CAAC;CACJ;AA3CD,gCA2CC","file":"map.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/map.mjs b/igv_component/node_modules/apache-arrow/builder/map.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..b4e683533fef6f7557c1ea8eaf1456cd7c7be2b0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/map.mjs
@@ -0,0 +1,60 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Field } from '../schema.mjs';
+import { Map_ } from '../type.mjs';
+import { VariableWidthBuilder } from '../builder.mjs';
+/** @ignore */
+export class MapBuilder extends VariableWidthBuilder {
+    set(index, value) {
+        return super.set(index, value);
+    }
+    setValue(index, value) {
+        const row = (value instanceof Map ? value : new Map(Object.entries(value)));
+        const pending = this._pending || (this._pending = new Map());
+        const current = pending.get(index);
+        current && (this._pendingLength -= current.size);
+        this._pendingLength += row.size;
+        pending.set(index, row);
+    }
+    addChild(child, name = `${this.numChildren}`) {
+        if (this.numChildren > 0) {
+            throw new Error('ListBuilder can only have one child.');
+        }
+        this.children[this.numChildren] = child;
+        this.type = new Map_(new Field(name, child.type, true), this.type.keysSorted);
+        return this.numChildren - 1;
+    }
+    _flushPending(pending) {
+        const offsets = this._offsets;
+        const [child] = this.children;
+        for (const [index, value] of pending) {
+            if (value === undefined) {
+                offsets.set(index, 0);
+            }
+            else {
+                let { [index]: idx, [index + 1]: end } = offsets.set(index, value.size).buffer;
+                for (const val of value.entries()) {
+                    child.set(idx, val);
+                    if (++idx >= end)
+                        break;
+                }
+            }
+        }
+    }
+}
+
+//# sourceMappingURL=map.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/map.mjs.map b/igv_component/node_modules/apache-arrow/builder/map.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..ab3bf48c31f9c74c2b1bc9a5f72aa4cc69a9885c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/map.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/map.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,EAAE,KAAK,EAAE,MAAM,cAAc,CAAC;AACrC,OAAO,EAAY,IAAI,EAAU,MAAM,YAAY,CAAC;AACpD,OAAO,EAAW,oBAAoB,EAAE,MAAM,eAAe,CAAC;AAM9D,cAAc;AACd,MAAM,OAAO,UAA4E,SAAQ,oBAAuC;IAG7H,GAAG,CAAC,KAAa,EAAE,KAAgC;QACtD,OAAO,KAAK,CAAC,GAAG,CAAC,KAAK,EAAE,KAA+B,CAAC,CAAC;IAC7D,CAAC;IAEM,QAAQ,CAAC,KAAa,EAAE,KAAwB;QACnD,MAAM,GAAG,GAAG,CAAC,KAAK,YAAY,GAAG,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC,IAAI,GAAG,CAAC,MAAM,CAAC,OAAO,CAAC,KAAK,CAAC,CAAC,CAAmB,CAAC;QAC9F,MAAM,OAAO,GAAG,IAAI,CAAC,QAAQ,IAAI,CAAC,IAAI,CAAC,QAAQ,GAAG,IAAI,GAAG,EAAqB,CAAC,CAAC;QAChF,MAAM,OAAO,GAAG,OAAO,CAAC,GAAG,CAAC,KAAK,CAA0B,CAAC;QAC5D,OAAO,IAAI,CAAC,IAAI,CAAC,cAAc,IAAI,OAAO,CAAC,IAAI,CAAC,CAAC;QACjD,IAAI,CAAC,cAAc,IAAI,GAAG,CAAC,IAAI,CAAC;QAChC,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,GAAG,CAAC,CAAC;IAC5B,CAAC;IAEM,QAAQ,CAAC,KAA4C,EAAE,IAAI,GAAG,GAAG,IAAI,CAAC,WAAW,EAAE;QACtF,IAAI,IAAI,CAAC,WAAW,GAAG,CAAC,EAAE;YACtB,MAAM,IAAI,KAAK,CAAC,sCAAsC,CAAC,CAAC;SAC3D;QACD,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,WAAW,CAAC,GAAG,KAAK,CAAC;QACxC,IAAI,CAAC,IAAI,GAAG,IAAI,IAAI,CAAO,IAAI,KAAK,CAAC,IAAI,EAAE,KAAK,CAAC,IAAI,EAAE,IAAI,CAAC,EAAE,IAAI,CAAC,IAAI,CAAC,UAAU,CAAC,CAAC;QACpF,OAAO,IAAI,CAAC,WAAW,GAAG,CAAC,CAAC;IAChC,CAAC;IAES,aAAa,CAAC,OAAwB;QAC5C,MAAM,OAAO,GAAG,IAAI,CAAC,QAAQ,CAAC;QAC9B,MAAM,CAAC,KAAK,CAAC,GAAG,IAAI,CAAC,QAAQ,CAAC;QAC9B,KAAK,MAAM,CAAC,KAAK,EAAE,KAAK,CAAC,IAAI,OAAO,EAAE;YAClC,IAAI,KAAK,KAAK,SAAS,EAAE;gBACrB,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;aACzB;iBAAM;gBACH,IAAI,EACA,CAAC,KAAK,CAAC,EAAE,GAAG,EACZ,CAAC,KAAK,GAAG,CAAC,CAAC,EAAE,GAAG,EACnB,GAAG,OAAO,CAAC,GAAG,CAAC,KAAK,EAAE,KAAK,CAAC,IAAI,CAAC,CAAC,MAAM,CAAC;gBAC1C,KAAK,MAAM,GAAG,IAAI,KAAK,CAAC,OAAO,EAAE,EAAE;oBAC/B,KAAK,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,CAAC,CAAC;oBACpB,IAAI,EAAE,GAAG,IAAI,GAAG;wBAAE,MAAM;iBAC3B;aACJ;SACJ;IACL,CAAC;CACJ","file":"map.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/null.d.ts b/igv_component/node_modules/apache-arrow/builder/null.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..59b63bd851631e707d445646163bb52ebdbbe168
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/null.d.ts
@@ -0,0 +1,7 @@
+import { Null } from '../type.js';
+import { Builder } from '../builder.js';
+/** @ignore */
+export declare class NullBuilder<TNull = any> extends Builder<Null, TNull> {
+    setValue(index: number, value: null): void;
+    setValid(index: number, valid: boolean): boolean;
+}
diff --git a/igv_component/node_modules/apache-arrow/builder/null.d.ts.map b/igv_component/node_modules/apache-arrow/builder/null.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..f1300d5b8012f915484978592a5dada31ad9fac5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/null.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/null.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,IAAI,EAAE,MAAM,YAAY,CAAC;AAClC,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AAExC,cAAc;AACd,qBAAa,WAAW,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,OAAO,CAAC,IAAI,EAAE,KAAK,CAAC;IAEvD,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,IAAI;IACnC,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,OAAO;CAIhD","file":"null.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/null.js b/igv_component/node_modules/apache-arrow/builder/null.js
new file mode 100644
index 0000000000000000000000000000000000000000..6143c4b20b157f4747e90070d5a348ad3ca6854f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/null.js
@@ -0,0 +1,32 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.NullBuilder = void 0;
+const builder_js_1 = require("../builder.js");
+/** @ignore */
+class NullBuilder extends builder_js_1.Builder {
+    // @ts-ignore
+    setValue(index, value) { }
+    setValid(index, valid) {
+        this.length = Math.max(index + 1, this.length);
+        return valid;
+    }
+}
+exports.NullBuilder = NullBuilder;
+
+//# sourceMappingURL=null.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/null.js.map b/igv_component/node_modules/apache-arrow/builder/null.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..bde164b8f0aa1ef352b9c0546f695d75a79183d9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/null.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/null.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAGrB,8CAAwC;AAExC,cAAc;AACd,MAAa,WAAyB,SAAQ,oBAAoB;IAC9D,aAAa;IACN,QAAQ,CAAC,KAAa,EAAE,KAAW,IAAI,CAAC;IACxC,QAAQ,CAAC,KAAa,EAAE,KAAc;QACzC,IAAI,CAAC,MAAM,GAAG,IAAI,CAAC,GAAG,CAAC,KAAK,GAAG,CAAC,EAAE,IAAI,CAAC,MAAM,CAAC,CAAC;QAC/C,OAAO,KAAK,CAAC;IACjB,CAAC;CACJ;AAPD,kCAOC","file":"null.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/null.mjs b/igv_component/node_modules/apache-arrow/builder/null.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..b806a77ef2d3439117c20e7ee88e9ced48352d56
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/null.mjs
@@ -0,0 +1,28 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Builder } from '../builder.mjs';
+/** @ignore */
+export class NullBuilder extends Builder {
+    // @ts-ignore
+    setValue(index, value) { }
+    setValid(index, valid) {
+        this.length = Math.max(index + 1, this.length);
+        return valid;
+    }
+}
+
+//# sourceMappingURL=null.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/null.mjs.map b/igv_component/node_modules/apache-arrow/builder/null.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..9a76e27b4594bc53bbc83e0772c244d0eca1c8cd
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/null.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/null.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAGrB,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AAExC,cAAc;AACd,MAAM,OAAO,WAAyB,SAAQ,OAAoB;IAC9D,aAAa;IACN,QAAQ,CAAC,KAAa,EAAE,KAAW,IAAI,CAAC;IACxC,QAAQ,CAAC,KAAa,EAAE,KAAc;QACzC,IAAI,CAAC,MAAM,GAAG,IAAI,CAAC,GAAG,CAAC,KAAK,GAAG,CAAC,EAAE,IAAI,CAAC,MAAM,CAAC,CAAC;QAC/C,OAAO,KAAK,CAAC;IACjB,CAAC;CACJ","file":"null.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/struct.d.ts b/igv_component/node_modules/apache-arrow/builder/struct.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..8db5e6ebd4704030330113a35c23f26c0b52d425
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/struct.d.ts
@@ -0,0 +1,9 @@
+import { Builder } from '../builder.js';
+import { Struct, TypeMap } from '../type.js';
+/** @ignore */
+export declare class StructBuilder<T extends TypeMap = any, TNull = any> extends Builder<Struct<T>, TNull> {
+    setValue(index: number, value: Struct<T>['TValue']): void;
+    /** @inheritdoc */
+    setValid(index: number, valid: boolean): boolean;
+    addChild(child: Builder, name?: string): number;
+}
diff --git a/igv_component/node_modules/apache-arrow/builder/struct.d.ts.map b/igv_component/node_modules/apache-arrow/builder/struct.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..e20e36a56c7b9360fd808cc6ed325c082168c5cf
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/struct.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/struct.ts"],"names":[],"mappings":"AAoBA,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AACxC,OAAO,EAAE,MAAM,EAAE,OAAO,EAAE,MAAM,YAAY,CAAC;AAE7C,cAAc;AACd,qBAAa,aAAa,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,OAAO,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,KAAK,CAAC;IACvF,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM,CAAC,CAAC,CAAC,CAAC,QAAQ,CAAC;IASzD,kBAAkB;IACX,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,OAAO;IAOtC,QAAQ,CAAC,KAAK,EAAE,OAAO,EAAE,IAAI,SAAwB;CAK/D","file":"struct.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/struct.js b/igv_component/node_modules/apache-arrow/builder/struct.js
new file mode 100644
index 0000000000000000000000000000000000000000..fb8b061c49d8f710b7306ee9e82d4bcd74f59b24
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/struct.js
@@ -0,0 +1,49 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.StructBuilder = void 0;
+/* eslint-disable unicorn/no-array-for-each */
+const schema_js_1 = require("../schema.js");
+const builder_js_1 = require("../builder.js");
+const type_js_1 = require("../type.js");
+/** @ignore */
+class StructBuilder extends builder_js_1.Builder {
+    setValue(index, value) {
+        const { children, type } = this;
+        switch (Array.isArray(value) || value.constructor) {
+            case true: return type.children.forEach((_, i) => children[i].set(index, value[i]));
+            case Map: return type.children.forEach((f, i) => children[i].set(index, value.get(f.name)));
+            default: return type.children.forEach((f, i) => children[i].set(index, value[f.name]));
+        }
+    }
+    /** @inheritdoc */
+    setValid(index, valid) {
+        if (!super.setValid(index, valid)) {
+            this.children.forEach((child) => child.setValid(index, valid));
+        }
+        return valid;
+    }
+    addChild(child, name = `${this.numChildren}`) {
+        const childIndex = this.children.push(child);
+        this.type = new type_js_1.Struct([...this.type.children, new schema_js_1.Field(name, child.type, true)]);
+        return childIndex;
+    }
+}
+exports.StructBuilder = StructBuilder;
+
+//# sourceMappingURL=struct.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/struct.js.map b/igv_component/node_modules/apache-arrow/builder/struct.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..141350ffd63b7244b6a49bc216872285d94a66e3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/struct.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/struct.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,8CAA8C;AAE9C,4CAAqC;AACrC,8CAAwC;AACxC,wCAA6C;AAE7C,cAAc;AACd,MAAa,aAAoD,SAAQ,oBAAyB;IACvF,QAAQ,CAAC,KAAa,EAAE,KAA0B;QACrD,MAAM,EAAE,QAAQ,EAAE,IAAI,EAAE,GAAG,IAAI,CAAC;QAChC,QAAQ,KAAK,CAAC,OAAO,CAAC,KAAK,CAAC,IAAI,KAAK,CAAC,WAAW,EAAE;YAC/C,KAAK,IAAI,CAAC,CAAC,OAAO,IAAI,CAAC,QAAQ,CAAC,OAAO,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC,GAAG,CAAC,KAAK,EAAE,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;YACpF,KAAK,GAAG,CAAC,CAAC,OAAO,IAAI,CAAC,QAAQ,CAAC,OAAO,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC,GAAG,CAAC,KAAK,EAAE,KAAK,CAAC,GAAG,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC;YAC5F,OAAO,CAAC,CAAC,OAAO,IAAI,CAAC,QAAQ,CAAC,OAAO,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC,GAAG,CAAC,KAAK,EAAE,KAAK,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC;SAC1F;IACL,CAAC;IAED,kBAAkB;IACX,QAAQ,CAAC,KAAa,EAAE,KAAc;QACzC,IAAI,CAAC,KAAK,CAAC,QAAQ,CAAC,KAAK,EAAE,KAAK,CAAC,EAAE;YAC/B,IAAI,CAAC,QAAQ,CAAC,OAAO,CAAC,CAAC,KAAK,EAAE,EAAE,CAAC,KAAK,CAAC,QAAQ,CAAC,KAAK,EAAE,KAAK,CAAC,CAAC,CAAC;SAClE;QACD,OAAO,KAAK,CAAC;IACjB,CAAC;IAEM,QAAQ,CAAC,KAAc,EAAE,IAAI,GAAG,GAAG,IAAI,CAAC,WAAW,EAAE;QACxD,MAAM,UAAU,GAAG,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC;QAC7C,IAAI,CAAC,IAAI,GAAG,IAAI,gBAAM,CAAC,CAAC,GAAG,IAAI,CAAC,IAAI,CAAC,QAAQ,EAAE,IAAI,iBAAK,CAAC,IAAI,EAAE,KAAK,CAAC,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,CAAC;QACnF,OAAO,UAAU,CAAC;IACtB,CAAC;CACJ;AAvBD,sCAuBC","file":"struct.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/struct.mjs b/igv_component/node_modules/apache-arrow/builder/struct.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..44736c877551a2fc3ac5726bb3a44b79e2f19071
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/struct.mjs
@@ -0,0 +1,45 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+/* eslint-disable unicorn/no-array-for-each */
+import { Field } from '../schema.mjs';
+import { Builder } from '../builder.mjs';
+import { Struct } from '../type.mjs';
+/** @ignore */
+export class StructBuilder extends Builder {
+    setValue(index, value) {
+        const { children, type } = this;
+        switch (Array.isArray(value) || value.constructor) {
+            case true: return type.children.forEach((_, i) => children[i].set(index, value[i]));
+            case Map: return type.children.forEach((f, i) => children[i].set(index, value.get(f.name)));
+            default: return type.children.forEach((f, i) => children[i].set(index, value[f.name]));
+        }
+    }
+    /** @inheritdoc */
+    setValid(index, valid) {
+        if (!super.setValid(index, valid)) {
+            this.children.forEach((child) => child.setValid(index, valid));
+        }
+        return valid;
+    }
+    addChild(child, name = `${this.numChildren}`) {
+        const childIndex = this.children.push(child);
+        this.type = new Struct([...this.type.children, new Field(name, child.type, true)]);
+        return childIndex;
+    }
+}
+
+//# sourceMappingURL=struct.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/struct.mjs.map b/igv_component/node_modules/apache-arrow/builder/struct.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..70200a03e7e2be72f466826ac5ee9f3872c0f9a5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/struct.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/struct.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,8CAA8C;AAE9C,OAAO,EAAE,KAAK,EAAE,MAAM,cAAc,CAAC;AACrC,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AACxC,OAAO,EAAE,MAAM,EAAW,MAAM,YAAY,CAAC;AAE7C,cAAc;AACd,MAAM,OAAO,aAAoD,SAAQ,OAAyB;IACvF,QAAQ,CAAC,KAAa,EAAE,KAA0B;QACrD,MAAM,EAAE,QAAQ,EAAE,IAAI,EAAE,GAAG,IAAI,CAAC;QAChC,QAAQ,KAAK,CAAC,OAAO,CAAC,KAAK,CAAC,IAAI,KAAK,CAAC,WAAW,EAAE;YAC/C,KAAK,IAAI,CAAC,CAAC,OAAO,IAAI,CAAC,QAAQ,CAAC,OAAO,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC,GAAG,CAAC,KAAK,EAAE,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;YACpF,KAAK,GAAG,CAAC,CAAC,OAAO,IAAI,CAAC,QAAQ,CAAC,OAAO,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC,GAAG,CAAC,KAAK,EAAE,KAAK,CAAC,GAAG,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC;YAC5F,OAAO,CAAC,CAAC,OAAO,IAAI,CAAC,QAAQ,CAAC,OAAO,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC,GAAG,CAAC,KAAK,EAAE,KAAK,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC;SAC1F;IACL,CAAC;IAED,kBAAkB;IACX,QAAQ,CAAC,KAAa,EAAE,KAAc;QACzC,IAAI,CAAC,KAAK,CAAC,QAAQ,CAAC,KAAK,EAAE,KAAK,CAAC,EAAE;YAC/B,IAAI,CAAC,QAAQ,CAAC,OAAO,CAAC,CAAC,KAAK,EAAE,EAAE,CAAC,KAAK,CAAC,QAAQ,CAAC,KAAK,EAAE,KAAK,CAAC,CAAC,CAAC;SAClE;QACD,OAAO,KAAK,CAAC;IACjB,CAAC;IAEM,QAAQ,CAAC,KAAc,EAAE,IAAI,GAAG,GAAG,IAAI,CAAC,WAAW,EAAE;QACxD,MAAM,UAAU,GAAG,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC;QAC7C,IAAI,CAAC,IAAI,GAAG,IAAI,MAAM,CAAC,CAAC,GAAG,IAAI,CAAC,IAAI,CAAC,QAAQ,EAAE,IAAI,KAAK,CAAC,IAAI,EAAE,KAAK,CAAC,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,CAAC;QACnF,OAAO,UAAU,CAAC;IACtB,CAAC;CACJ","file":"struct.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/time.d.ts b/igv_component/node_modules/apache-arrow/builder/time.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e325d3aaea2cbcc7c8f5982db638b3146ed53f64
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/time.d.ts
@@ -0,0 +1,17 @@
+import { FixedWidthBuilder } from '../builder.js';
+import { Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond } from '../type.js';
+/** @ignore */
+export declare class TimeBuilder<T extends Time = Time, TNull = any> extends FixedWidthBuilder<T, TNull> {
+}
+/** @ignore */
+export declare class TimeSecondBuilder<TNull = any> extends TimeBuilder<TimeSecond, TNull> {
+}
+/** @ignore */
+export declare class TimeMillisecondBuilder<TNull = any> extends TimeBuilder<TimeMillisecond, TNull> {
+}
+/** @ignore */
+export declare class TimeMicrosecondBuilder<TNull = any> extends TimeBuilder<TimeMicrosecond, TNull> {
+}
+/** @ignore */
+export declare class TimeNanosecondBuilder<TNull = any> extends TimeBuilder<TimeNanosecond, TNull> {
+}
diff --git a/igv_component/node_modules/apache-arrow/builder/time.d.ts.map b/igv_component/node_modules/apache-arrow/builder/time.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..454dcf12dde368a4d270c744e11b320c5f55b9b2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/time.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/time.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,iBAAiB,EAAE,MAAM,eAAe,CAAC;AAClD,OAAO,EAAE,IAAI,EAAE,UAAU,EAAE,eAAe,EAAE,eAAe,EAAE,cAAc,EAAE,MAAM,YAAY,CAAC;AAGhG,cAAc;AACd,qBAAa,WAAW,CAAC,CAAC,SAAS,IAAI,GAAG,IAAI,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,iBAAiB,CAAC,CAAC,EAAE,KAAK,CAAC;CAAI;AAIpG,cAAc;AACd,qBAAa,iBAAiB,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,WAAW,CAAC,UAAU,EAAE,KAAK,CAAC;CAAI;AAItF,cAAc;AACd,qBAAa,sBAAsB,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,WAAW,CAAC,eAAe,EAAE,KAAK,CAAC;CAAI;AAIhG,cAAc;AACd,qBAAa,sBAAsB,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,WAAW,CAAC,eAAe,EAAE,KAAK,CAAC;CAAI;AAIhG,cAAc;AACd,qBAAa,qBAAqB,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,WAAW,CAAC,cAAc,EAAE,KAAK,CAAC;CAAI","file":"time.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/time.js b/igv_component/node_modules/apache-arrow/builder/time.js
new file mode 100644
index 0000000000000000000000000000000000000000..e99a9981e5abdb75236ec1ee8507ca73a963175d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/time.js
@@ -0,0 +1,48 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.TimeNanosecondBuilder = exports.TimeMicrosecondBuilder = exports.TimeMillisecondBuilder = exports.TimeSecondBuilder = exports.TimeBuilder = void 0;
+const builder_js_1 = require("../builder.js");
+const set_js_1 = require("../visitor/set.js");
+/** @ignore */
+class TimeBuilder extends builder_js_1.FixedWidthBuilder {
+}
+exports.TimeBuilder = TimeBuilder;
+TimeBuilder.prototype._setValue = set_js_1.setTime;
+/** @ignore */
+class TimeSecondBuilder extends TimeBuilder {
+}
+exports.TimeSecondBuilder = TimeSecondBuilder;
+TimeSecondBuilder.prototype._setValue = set_js_1.setTimeSecond;
+/** @ignore */
+class TimeMillisecondBuilder extends TimeBuilder {
+}
+exports.TimeMillisecondBuilder = TimeMillisecondBuilder;
+TimeMillisecondBuilder.prototype._setValue = set_js_1.setTimeMillisecond;
+/** @ignore */
+class TimeMicrosecondBuilder extends TimeBuilder {
+}
+exports.TimeMicrosecondBuilder = TimeMicrosecondBuilder;
+TimeMicrosecondBuilder.prototype._setValue = set_js_1.setTimeMicrosecond;
+/** @ignore */
+class TimeNanosecondBuilder extends TimeBuilder {
+}
+exports.TimeNanosecondBuilder = TimeNanosecondBuilder;
+TimeNanosecondBuilder.prototype._setValue = set_js_1.setTimeNanosecond;
+
+//# sourceMappingURL=time.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/time.js.map b/igv_component/node_modules/apache-arrow/builder/time.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..61829cdf12cad1568c434027630ce5b684ece87a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/time.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/time.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,8CAAkD;AAElD,8CAAsH;AAEtH,cAAc;AACd,MAAa,WAAgD,SAAQ,8BAA2B;CAAI;AAApG,kCAAoG;AAEnG,WAAW,CAAC,SAAiB,CAAC,SAAS,GAAG,gBAAO,CAAC;AAEnD,cAAc;AACd,MAAa,iBAA+B,SAAQ,WAA8B;CAAI;AAAtF,8CAAsF;AAErF,iBAAiB,CAAC,SAAiB,CAAC,SAAS,GAAG,sBAAa,CAAC;AAE/D,cAAc;AACd,MAAa,sBAAoC,SAAQ,WAAmC;CAAI;AAAhG,wDAAgG;AAE/F,sBAAsB,CAAC,SAAiB,CAAC,SAAS,GAAG,2BAAkB,CAAC;AAEzE,cAAc;AACd,MAAa,sBAAoC,SAAQ,WAAmC;CAAI;AAAhG,wDAAgG;AAE/F,sBAAsB,CAAC,SAAiB,CAAC,SAAS,GAAG,2BAAkB,CAAC;AAEzE,cAAc;AACd,MAAa,qBAAmC,SAAQ,WAAkC;CAAI;AAA9F,sDAA8F;AAE7F,qBAAqB,CAAC,SAAiB,CAAC,SAAS,GAAG,0BAAiB,CAAC","file":"time.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/time.mjs b/igv_component/node_modules/apache-arrow/builder/time.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..f8cf832cfab50431367355ee00777425298d7f5b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/time.mjs
@@ -0,0 +1,40 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { FixedWidthBuilder } from '../builder.mjs';
+import { setTime, setTimeSecond, setTimeMillisecond, setTimeMicrosecond, setTimeNanosecond } from '../visitor/set.mjs';
+/** @ignore */
+export class TimeBuilder extends FixedWidthBuilder {
+}
+TimeBuilder.prototype._setValue = setTime;
+/** @ignore */
+export class TimeSecondBuilder extends TimeBuilder {
+}
+TimeSecondBuilder.prototype._setValue = setTimeSecond;
+/** @ignore */
+export class TimeMillisecondBuilder extends TimeBuilder {
+}
+TimeMillisecondBuilder.prototype._setValue = setTimeMillisecond;
+/** @ignore */
+export class TimeMicrosecondBuilder extends TimeBuilder {
+}
+TimeMicrosecondBuilder.prototype._setValue = setTimeMicrosecond;
+/** @ignore */
+export class TimeNanosecondBuilder extends TimeBuilder {
+}
+TimeNanosecondBuilder.prototype._setValue = setTimeNanosecond;
+
+//# sourceMappingURL=time.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/time.mjs.map b/igv_component/node_modules/apache-arrow/builder/time.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..da7eb560da01e490585c40c8f5e043aad490cb6a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/time.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/time.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,EAAE,iBAAiB,EAAE,MAAM,eAAe,CAAC;AAElD,OAAO,EAAE,OAAO,EAAE,aAAa,EAAE,kBAAkB,EAAE,kBAAkB,EAAE,iBAAiB,EAAE,MAAM,mBAAmB,CAAC;AAEtH,cAAc;AACd,MAAM,OAAO,WAAgD,SAAQ,iBAA2B;CAAI;AAEnG,WAAW,CAAC,SAAiB,CAAC,SAAS,GAAG,OAAO,CAAC;AAEnD,cAAc;AACd,MAAM,OAAO,iBAA+B,SAAQ,WAA8B;CAAI;AAErF,iBAAiB,CAAC,SAAiB,CAAC,SAAS,GAAG,aAAa,CAAC;AAE/D,cAAc;AACd,MAAM,OAAO,sBAAoC,SAAQ,WAAmC;CAAI;AAE/F,sBAAsB,CAAC,SAAiB,CAAC,SAAS,GAAG,kBAAkB,CAAC;AAEzE,cAAc;AACd,MAAM,OAAO,sBAAoC,SAAQ,WAAmC;CAAI;AAE/F,sBAAsB,CAAC,SAAiB,CAAC,SAAS,GAAG,kBAAkB,CAAC;AAEzE,cAAc;AACd,MAAM,OAAO,qBAAmC,SAAQ,WAAkC;CAAI;AAE7F,qBAAqB,CAAC,SAAiB,CAAC,SAAS,GAAG,iBAAiB,CAAC","file":"time.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/timestamp.d.ts b/igv_component/node_modules/apache-arrow/builder/timestamp.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..ff8c37c2e9735b6901bc050984aef9c455576613
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/timestamp.d.ts
@@ -0,0 +1,17 @@
+import { FixedWidthBuilder } from '../builder.js';
+import { Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond } from '../type.js';
+/** @ignore */
+export declare class TimestampBuilder<T extends Timestamp = Timestamp, TNull = any> extends FixedWidthBuilder<T, TNull> {
+}
+/** @ignore */
+export declare class TimestampSecondBuilder<TNull = any> extends TimestampBuilder<TimestampSecond, TNull> {
+}
+/** @ignore */
+export declare class TimestampMillisecondBuilder<TNull = any> extends TimestampBuilder<TimestampMillisecond, TNull> {
+}
+/** @ignore */
+export declare class TimestampMicrosecondBuilder<TNull = any> extends TimestampBuilder<TimestampMicrosecond, TNull> {
+}
+/** @ignore */
+export declare class TimestampNanosecondBuilder<TNull = any> extends TimestampBuilder<TimestampNanosecond, TNull> {
+}
diff --git a/igv_component/node_modules/apache-arrow/builder/timestamp.d.ts.map b/igv_component/node_modules/apache-arrow/builder/timestamp.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..4fc467106b4d7581c9ecc87306d0ca0fa5078b61
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/timestamp.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/timestamp.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,iBAAiB,EAAE,MAAM,eAAe,CAAC;AAClD,OAAO,EAAE,SAAS,EAAE,eAAe,EAAE,oBAAoB,EAAE,oBAAoB,EAAE,mBAAmB,EAAE,MAAM,YAAY,CAAC;AAGzH,cAAc;AACd,qBAAa,gBAAgB,CAAC,CAAC,SAAS,SAAS,GAAG,SAAS,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,iBAAiB,CAAC,CAAC,EAAE,KAAK,CAAC;CAAI;AAInH,cAAc;AACd,qBAAa,sBAAsB,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,gBAAgB,CAAC,eAAe,EAAE,KAAK,CAAC;CAAI;AAIrG,cAAc;AACd,qBAAa,2BAA2B,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,gBAAgB,CAAC,oBAAoB,EAAE,KAAK,CAAC;CAAI;AAI/G,cAAc;AACd,qBAAa,2BAA2B,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,gBAAgB,CAAC,oBAAoB,EAAE,KAAK,CAAC;CAAI;AAI/G,cAAc;AACd,qBAAa,0BAA0B,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,gBAAgB,CAAC,mBAAmB,EAAE,KAAK,CAAC;CAAI","file":"timestamp.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/timestamp.js b/igv_component/node_modules/apache-arrow/builder/timestamp.js
new file mode 100644
index 0000000000000000000000000000000000000000..2ded42dc9ab066325d874bc9c82d67de7c400234
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/timestamp.js
@@ -0,0 +1,48 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.TimestampNanosecondBuilder = exports.TimestampMicrosecondBuilder = exports.TimestampMillisecondBuilder = exports.TimestampSecondBuilder = exports.TimestampBuilder = void 0;
+const builder_js_1 = require("../builder.js");
+const set_js_1 = require("../visitor/set.js");
+/** @ignore */
+class TimestampBuilder extends builder_js_1.FixedWidthBuilder {
+}
+exports.TimestampBuilder = TimestampBuilder;
+TimestampBuilder.prototype._setValue = set_js_1.setTimestamp;
+/** @ignore */
+class TimestampSecondBuilder extends TimestampBuilder {
+}
+exports.TimestampSecondBuilder = TimestampSecondBuilder;
+TimestampSecondBuilder.prototype._setValue = set_js_1.setTimestampSecond;
+/** @ignore */
+class TimestampMillisecondBuilder extends TimestampBuilder {
+}
+exports.TimestampMillisecondBuilder = TimestampMillisecondBuilder;
+TimestampMillisecondBuilder.prototype._setValue = set_js_1.setTimestampMillisecond;
+/** @ignore */
+class TimestampMicrosecondBuilder extends TimestampBuilder {
+}
+exports.TimestampMicrosecondBuilder = TimestampMicrosecondBuilder;
+TimestampMicrosecondBuilder.prototype._setValue = set_js_1.setTimestampMicrosecond;
+/** @ignore */
+class TimestampNanosecondBuilder extends TimestampBuilder {
+}
+exports.TimestampNanosecondBuilder = TimestampNanosecondBuilder;
+TimestampNanosecondBuilder.prototype._setValue = set_js_1.setTimestampNanosecond;
+
+//# sourceMappingURL=timestamp.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/timestamp.js.map b/igv_component/node_modules/apache-arrow/builder/timestamp.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..16de1fa76c2ecd919605f209e4add60e16a0de3e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/timestamp.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/timestamp.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,8CAAkD;AAElD,8CAA+I;AAE/I,cAAc;AACd,MAAa,gBAA+D,SAAQ,8BAA2B;CAAI;AAAnH,4CAAmH;AAElH,gBAAgB,CAAC,SAAiB,CAAC,SAAS,GAAG,qBAAY,CAAC;AAE7D,cAAc;AACd,MAAa,sBAAoC,SAAQ,gBAAwC;CAAI;AAArG,wDAAqG;AAEpG,sBAAsB,CAAC,SAAiB,CAAC,SAAS,GAAG,2BAAkB,CAAC;AAEzE,cAAc;AACd,MAAa,2BAAyC,SAAQ,gBAA6C;CAAI;AAA/G,kEAA+G;AAE9G,2BAA2B,CAAC,SAAiB,CAAC,SAAS,GAAG,gCAAuB,CAAC;AAEnF,cAAc;AACd,MAAa,2BAAyC,SAAQ,gBAA6C;CAAI;AAA/G,kEAA+G;AAE9G,2BAA2B,CAAC,SAAiB,CAAC,SAAS,GAAG,gCAAuB,CAAC;AAEnF,cAAc;AACd,MAAa,0BAAwC,SAAQ,gBAA4C;CAAI;AAA7G,gEAA6G;AAE5G,0BAA0B,CAAC,SAAiB,CAAC,SAAS,GAAG,+BAAsB,CAAC","file":"timestamp.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/timestamp.mjs b/igv_component/node_modules/apache-arrow/builder/timestamp.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..f940291c2b30c8d7fc9acbc279e71f74e2f57d97
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/timestamp.mjs
@@ -0,0 +1,40 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { FixedWidthBuilder } from '../builder.mjs';
+import { setTimestamp, setTimestampSecond, setTimestampMillisecond, setTimestampMicrosecond, setTimestampNanosecond } from '../visitor/set.mjs';
+/** @ignore */
+export class TimestampBuilder extends FixedWidthBuilder {
+}
+TimestampBuilder.prototype._setValue = setTimestamp;
+/** @ignore */
+export class TimestampSecondBuilder extends TimestampBuilder {
+}
+TimestampSecondBuilder.prototype._setValue = setTimestampSecond;
+/** @ignore */
+export class TimestampMillisecondBuilder extends TimestampBuilder {
+}
+TimestampMillisecondBuilder.prototype._setValue = setTimestampMillisecond;
+/** @ignore */
+export class TimestampMicrosecondBuilder extends TimestampBuilder {
+}
+TimestampMicrosecondBuilder.prototype._setValue = setTimestampMicrosecond;
+/** @ignore */
+export class TimestampNanosecondBuilder extends TimestampBuilder {
+}
+TimestampNanosecondBuilder.prototype._setValue = setTimestampNanosecond;
+
+//# sourceMappingURL=timestamp.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/timestamp.mjs.map b/igv_component/node_modules/apache-arrow/builder/timestamp.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..8e3d36b25fb5a46c6e7ba2ede49523fa6d7df357
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/timestamp.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/timestamp.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,EAAE,iBAAiB,EAAE,MAAM,eAAe,CAAC;AAElD,OAAO,EAAE,YAAY,EAAE,kBAAkB,EAAE,uBAAuB,EAAE,uBAAuB,EAAE,sBAAsB,EAAE,MAAM,mBAAmB,CAAC;AAE/I,cAAc;AACd,MAAM,OAAO,gBAA+D,SAAQ,iBAA2B;CAAI;AAElH,gBAAgB,CAAC,SAAiB,CAAC,SAAS,GAAG,YAAY,CAAC;AAE7D,cAAc;AACd,MAAM,OAAO,sBAAoC,SAAQ,gBAAwC;CAAI;AAEpG,sBAAsB,CAAC,SAAiB,CAAC,SAAS,GAAG,kBAAkB,CAAC;AAEzE,cAAc;AACd,MAAM,OAAO,2BAAyC,SAAQ,gBAA6C;CAAI;AAE9G,2BAA2B,CAAC,SAAiB,CAAC,SAAS,GAAG,uBAAuB,CAAC;AAEnF,cAAc;AACd,MAAM,OAAO,2BAAyC,SAAQ,gBAA6C;CAAI;AAE9G,2BAA2B,CAAC,SAAiB,CAAC,SAAS,GAAG,uBAAuB,CAAC;AAEnF,cAAc;AACd,MAAM,OAAO,0BAAwC,SAAQ,gBAA4C;CAAI;AAE5G,0BAA0B,CAAC,SAAiB,CAAC,SAAS,GAAG,sBAAsB,CAAC","file":"timestamp.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/union.d.ts b/igv_component/node_modules/apache-arrow/builder/union.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..0c478d37defe0782ffbc8c69a408451dc01a5c2f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/union.d.ts
@@ -0,0 +1,30 @@
+import { DataBufferBuilder } from './buffer.js';
+import { Builder, BuilderOptions } from '../builder.js';
+import { Union, SparseUnion, DenseUnion } from '../type.js';
+export interface UnionBuilderOptions<T extends Union = any, TNull = any> extends BuilderOptions<T, TNull> {
+    valueToChildTypeId?: (builder: UnionBuilder<T, TNull>, value: any, offset: number) => number;
+}
+/** @ignore */
+export declare abstract class UnionBuilder<T extends Union, TNull = any> extends Builder<T, TNull> {
+    protected _typeIds: DataBufferBuilder<Int8Array>;
+    constructor(options: UnionBuilderOptions<T, TNull>);
+    get typeIdToChildIndex(): {
+        [key: number]: number;
+    };
+    append(value: T['TValue'] | TNull, childTypeId?: number): this;
+    set(index: number, value: T['TValue'] | TNull, childTypeId?: number): this;
+    setValue(index: number, value: T['TValue'], childTypeId?: number): void;
+    addChild(child: Builder, name?: string): number;
+    /** @ignore */
+    protected _valueToChildTypeId(builder: UnionBuilder<T, TNull>, value: any, offset: number): number;
+}
+/** @ignore */
+export declare class SparseUnionBuilder<T extends SparseUnion, TNull = any> extends UnionBuilder<T, TNull> {
+}
+/** @ignore */
+export declare class DenseUnionBuilder<T extends DenseUnion, TNull = any> extends UnionBuilder<T, TNull> {
+    protected _offsets: DataBufferBuilder<Int32Array>;
+    constructor(options: UnionBuilderOptions<T, TNull>);
+    /** @ignore */
+    setValue(index: number, value: T['TValue'], childTypeId?: number): void;
+}
diff --git a/igv_component/node_modules/apache-arrow/builder/union.d.ts.map b/igv_component/node_modules/apache-arrow/builder/union.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..67cb1f70c784ab44d6b3e07455827b6d98f1e5ed
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/union.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/union.ts"],"names":[],"mappings":"AAkBA,OAAO,EAAE,iBAAiB,EAAE,MAAM,aAAa,CAAC;AAChD,OAAO,EAAE,OAAO,EAAE,cAAc,EAAE,MAAM,eAAe,CAAC;AACxD,OAAO,EAAE,KAAK,EAAE,WAAW,EAAE,UAAU,EAAE,MAAM,YAAY,CAAC;AAE5D,MAAM,WAAW,mBAAmB,CAAC,CAAC,SAAS,KAAK,GAAG,GAAG,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,cAAc,CAAC,CAAC,EAAE,KAAK,CAAC;IACrG,kBAAkB,CAAC,EAAE,CAAC,OAAO,EAAE,YAAY,CAAC,CAAC,EAAE,KAAK,CAAC,EAAE,KAAK,EAAE,GAAG,EAAE,MAAM,EAAE,MAAM,KAAK,MAAM,CAAC;CAChG;AAED,cAAc;AACd,8BAAsB,YAAY,CAAC,CAAC,SAAS,KAAK,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,OAAO,CAAC,CAAC,EAAE,KAAK,CAAC;IAEtF,SAAS,CAAC,QAAQ,EAAE,iBAAiB,CAAC,SAAS,CAAC,CAAC;gBAErC,OAAO,EAAE,mBAAmB,CAAC,CAAC,EAAE,KAAK,CAAC;IAQlD,IAAW,kBAAkB;;MAA2C;IAEjE,MAAM,CAAC,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,KAAK,EAAE,WAAW,CAAC,EAAE,MAAM;IAIvD,GAAG,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,KAAK,EAAE,WAAW,CAAC,EAAE,MAAM;IAUnE,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,EAAE,WAAW,CAAC,EAAE,MAAM;IAOhE,QAAQ,CAAC,KAAK,EAAE,OAAO,EAAE,IAAI,SAA4B;IAQhE,cAAc;IAEd,SAAS,CAAC,mBAAmB,CAAC,OAAO,EAAE,YAAY,CAAC,CAAC,EAAE,KAAK,CAAC,EAAE,KAAK,EAAE,GAAG,EAAE,MAAM,EAAE,MAAM,GAAG,MAAM;CAKrG;AAED,cAAc;AACd,qBAAa,kBAAkB,CAAC,CAAC,SAAS,WAAW,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,YAAY,CAAC,CAAC,EAAE,KAAK,CAAC;CAAI;AACtG,cAAc;AACd,qBAAa,iBAAiB,CAAC,CAAC,SAAS,UAAU,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,YAAY,CAAC,CAAC,EAAE,KAAK,CAAC;IAE5F,SAAS,CAAC,QAAQ,EAAE,iBAAiB,CAAC,UAAU,CAAC,CAAC;gBAEtC,OAAO,EAAE,mBAAmB,CAAC,CAAC,EAAE,KAAK,CAAC;IAKlD,cAAc;IACP,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,EAAE,WAAW,CAAC,EAAE,MAAM;CAM1E","file":"union.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/union.js b/igv_component/node_modules/apache-arrow/builder/union.js
new file mode 100644
index 0000000000000000000000000000000000000000..8c9daa8f5f1f09944a0bf08cc64165b2334bf8d3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/union.js
@@ -0,0 +1,88 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.DenseUnionBuilder = exports.SparseUnionBuilder = exports.UnionBuilder = void 0;
+const schema_js_1 = require("../schema.js");
+const buffer_js_1 = require("./buffer.js");
+const builder_js_1 = require("../builder.js");
+const type_js_1 = require("../type.js");
+/** @ignore */
+class UnionBuilder extends builder_js_1.Builder {
+    constructor(options) {
+        super(options);
+        this._typeIds = new buffer_js_1.DataBufferBuilder(new Int8Array(0), 1);
+        if (typeof options['valueToChildTypeId'] === 'function') {
+            this._valueToChildTypeId = options['valueToChildTypeId'];
+        }
+    }
+    get typeIdToChildIndex() { return this.type.typeIdToChildIndex; }
+    append(value, childTypeId) {
+        return this.set(this.length, value, childTypeId);
+    }
+    set(index, value, childTypeId) {
+        if (childTypeId === undefined) {
+            childTypeId = this._valueToChildTypeId(this, value, index);
+        }
+        if (this.setValid(index, this.isValid(value))) {
+            this.setValue(index, value, childTypeId);
+        }
+        return this;
+    }
+    setValue(index, value, childTypeId) {
+        this._typeIds.set(index, childTypeId);
+        const childIndex = this.type.typeIdToChildIndex[childTypeId];
+        const child = this.children[childIndex];
+        child === null || child === void 0 ? void 0 : child.set(index, value);
+    }
+    addChild(child, name = `${this.children.length}`) {
+        const childTypeId = this.children.push(child);
+        const { type: { children, mode, typeIds } } = this;
+        const fields = [...children, new schema_js_1.Field(name, child.type)];
+        this.type = new type_js_1.Union(mode, [...typeIds, childTypeId], fields);
+        return childTypeId;
+    }
+    /** @ignore */
+    // @ts-ignore
+    _valueToChildTypeId(builder, value, offset) {
+        throw new Error(`Cannot map UnionBuilder value to child typeId. \
+Pass the \`childTypeId\` as the second argument to unionBuilder.append(), \
+or supply a \`valueToChildTypeId\` function as part of the UnionBuilder constructor options.`);
+    }
+}
+exports.UnionBuilder = UnionBuilder;
+/** @ignore */
+class SparseUnionBuilder extends UnionBuilder {
+}
+exports.SparseUnionBuilder = SparseUnionBuilder;
+/** @ignore */
+class DenseUnionBuilder extends UnionBuilder {
+    constructor(options) {
+        super(options);
+        this._offsets = new buffer_js_1.DataBufferBuilder(new Int32Array(0));
+    }
+    /** @ignore */
+    setValue(index, value, childTypeId) {
+        const id = this._typeIds.set(index, childTypeId).buffer[index];
+        const child = this.getChildAt(this.type.typeIdToChildIndex[id]);
+        const denseIndex = this._offsets.set(index, child.length).buffer[index];
+        child === null || child === void 0 ? void 0 : child.set(denseIndex, value);
+    }
+}
+exports.DenseUnionBuilder = DenseUnionBuilder;
+
+//# sourceMappingURL=union.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/union.js.map b/igv_component/node_modules/apache-arrow/builder/union.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..9060e631c633ec4e5c5394b71ed23c713e286896
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/union.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/union.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,4CAAqC;AACrC,2CAAgD;AAChD,8CAAwD;AACxD,wCAA4D;AAM5D,cAAc;AACd,MAAsB,YAA2C,SAAQ,oBAAiB;IAItF,YAAY,OAAsC;QAC9C,KAAK,CAAC,OAAO,CAAC,CAAC;QACf,IAAI,CAAC,QAAQ,GAAG,IAAI,6BAAiB,CAAC,IAAI,SAAS,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;QAC3D,IAAI,OAAO,OAAO,CAAC,oBAAoB,CAAC,KAAK,UAAU,EAAE;YACrD,IAAI,CAAC,mBAAmB,GAAG,OAAO,CAAC,oBAAoB,CAAC,CAAC;SAC5D;IACL,CAAC;IAED,IAAW,kBAAkB,KAAK,OAAO,IAAI,CAAC,IAAI,CAAC,kBAAkB,CAAC,CAAC,CAAC;IAEjE,MAAM,CAAC,KAA0B,EAAE,WAAoB;QAC1D,OAAO,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,MAAM,EAAE,KAAK,EAAE,WAAW,CAAC,CAAC;IACrD,CAAC;IAEM,GAAG,CAAC,KAAa,EAAE,KAA0B,EAAE,WAAoB;QACtE,IAAI,WAAW,KAAK,SAAS,EAAE;YAC3B,WAAW,GAAG,IAAI,CAAC,mBAAmB,CAAC,IAAI,EAAE,KAAK,EAAE,KAAK,CAAC,CAAC;SAC9D;QACD,IAAI,IAAI,CAAC,QAAQ,CAAC,KAAK,EAAE,IAAI,CAAC,OAAO,CAAC,KAAK,CAAC,CAAC,EAAE;YAC3C,IAAI,CAAC,QAAQ,CAAC,KAAK,EAAE,KAAK,EAAE,WAAW,CAAC,CAAC;SAC5C;QACD,OAAO,IAAI,CAAC;IAChB,CAAC;IAEM,QAAQ,CAAC,KAAa,EAAE,KAAkB,EAAE,WAAoB;QACnE,IAAI,CAAC,QAAQ,CAAC,GAAG,CAAC,KAAK,EAAE,WAAY,CAAC,CAAC;QACvC,MAAM,UAAU,GAAG,IAAI,CAAC,IAAI,CAAC,kBAAkB,CAAC,WAAY,CAAC,CAAC;QAC9D,MAAM,KAAK,GAAG,IAAI,CAAC,QAAQ,CAAC,UAAU,CAAC,CAAC;QACxC,KAAK,aAAL,KAAK,uBAAL,KAAK,CAAE,GAAG,CAAC,KAAK,EAAE,KAAK,CAAC,CAAC;IAC7B,CAAC;IAEM,QAAQ,CAAC,KAAc,EAAE,IAAI,GAAG,GAAG,IAAI,CAAC,QAAQ,CAAC,MAAM,EAAE;QAC5D,MAAM,WAAW,GAAG,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC;QAC9C,MAAM,EAAE,IAAI,EAAE,EAAE,QAAQ,EAAE,IAAI,EAAE,OAAO,EAAE,EAAE,GAAG,IAAI,CAAC;QACnD,MAAM,MAAM,GAAG,CAAC,GAAG,QAAQ,EAAE,IAAI,iBAAK,CAAC,IAAI,EAAE,KAAK,CAAC,IAAI,CAAC,CAAC,CAAC;QAC1D,IAAI,CAAC,IAAI,GAAM,IAAI,eAAK,CAAC,IAAI,EAAE,CAAC,GAAG,OAAO,EAAE,WAAW,CAAC,EAAE,MAAM,CAAC,CAAC;QAClE,OAAO,WAAW,CAAC;IACvB,CAAC;IAED,cAAc;IACd,aAAa;IACH,mBAAmB,CAAC,OAA+B,EAAE,KAAU,EAAE,MAAc;QACrF,MAAM,IAAI,KAAK,CAAC;;6FAEqE,CAAC,CAAC;IAC3F,CAAC;CACJ;AAlDD,oCAkDC;AAED,cAAc;AACd,MAAa,kBAAuD,SAAQ,YAAsB;CAAI;AAAtG,gDAAsG;AACtG,cAAc;AACd,MAAa,iBAAqD,SAAQ,YAAsB;IAI5F,YAAY,OAAsC;QAC9C,KAAK,CAAC,OAAO,CAAC,CAAC;QACf,IAAI,CAAC,QAAQ,GAAG,IAAI,6BAAiB,CAAC,IAAI,UAAU,CAAC,CAAC,CAAC,CAAC,CAAC;IAC7D,CAAC;IAED,cAAc;IACP,QAAQ,CAAC,KAAa,EAAE,KAAkB,EAAE,WAAoB;QACnE,MAAM,EAAE,GAAG,IAAI,CAAC,QAAQ,CAAC,GAAG,CAAC,KAAK,EAAE,WAAY,CAAC,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC;QAChE,MAAM,KAAK,GAAG,IAAI,CAAC,UAAU,CAAC,IAAI,CAAC,IAAI,CAAC,kBAAkB,CAAC,EAAE,CAAC,CAAE,CAAC;QACjE,MAAM,UAAU,GAAG,IAAI,CAAC,QAAQ,CAAC,GAAG,CAAC,KAAK,EAAE,KAAK,CAAC,MAAM,CAAC,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC;QACxE,KAAK,aAAL,KAAK,uBAAL,KAAK,CAAE,GAAG,CAAC,UAAU,EAAE,KAAK,CAAC,CAAC;IAClC,CAAC;CACJ;AAhBD,8CAgBC","file":"union.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/union.mjs b/igv_component/node_modules/apache-arrow/builder/union.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..2950b4f9b535051c39c97ea26cff7dcbbc51922a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/union.mjs
@@ -0,0 +1,82 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Field } from '../schema.mjs';
+import { DataBufferBuilder } from './buffer.mjs';
+import { Builder } from '../builder.mjs';
+import { Union } from '../type.mjs';
+/** @ignore */
+export class UnionBuilder extends Builder {
+    constructor(options) {
+        super(options);
+        this._typeIds = new DataBufferBuilder(new Int8Array(0), 1);
+        if (typeof options['valueToChildTypeId'] === 'function') {
+            this._valueToChildTypeId = options['valueToChildTypeId'];
+        }
+    }
+    get typeIdToChildIndex() { return this.type.typeIdToChildIndex; }
+    append(value, childTypeId) {
+        return this.set(this.length, value, childTypeId);
+    }
+    set(index, value, childTypeId) {
+        if (childTypeId === undefined) {
+            childTypeId = this._valueToChildTypeId(this, value, index);
+        }
+        if (this.setValid(index, this.isValid(value))) {
+            this.setValue(index, value, childTypeId);
+        }
+        return this;
+    }
+    setValue(index, value, childTypeId) {
+        this._typeIds.set(index, childTypeId);
+        const childIndex = this.type.typeIdToChildIndex[childTypeId];
+        const child = this.children[childIndex];
+        child === null || child === void 0 ? void 0 : child.set(index, value);
+    }
+    addChild(child, name = `${this.children.length}`) {
+        const childTypeId = this.children.push(child);
+        const { type: { children, mode, typeIds } } = this;
+        const fields = [...children, new Field(name, child.type)];
+        this.type = new Union(mode, [...typeIds, childTypeId], fields);
+        return childTypeId;
+    }
+    /** @ignore */
+    // @ts-ignore
+    _valueToChildTypeId(builder, value, offset) {
+        throw new Error(`Cannot map UnionBuilder value to child typeId. \
+Pass the \`childTypeId\` as the second argument to unionBuilder.append(), \
+or supply a \`valueToChildTypeId\` function as part of the UnionBuilder constructor options.`);
+    }
+}
+/** @ignore */
+export class SparseUnionBuilder extends UnionBuilder {
+}
+/** @ignore */
+export class DenseUnionBuilder extends UnionBuilder {
+    constructor(options) {
+        super(options);
+        this._offsets = new DataBufferBuilder(new Int32Array(0));
+    }
+    /** @ignore */
+    setValue(index, value, childTypeId) {
+        const id = this._typeIds.set(index, childTypeId).buffer[index];
+        const child = this.getChildAt(this.type.typeIdToChildIndex[id]);
+        const denseIndex = this._offsets.set(index, child.length).buffer[index];
+        child === null || child === void 0 ? void 0 : child.set(denseIndex, value);
+    }
+}
+
+//# sourceMappingURL=union.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/union.mjs.map b/igv_component/node_modules/apache-arrow/builder/union.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..ae18e736cef75a7db1f17bf96b1290b1a336d1e8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/union.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/union.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,EAAE,KAAK,EAAE,MAAM,cAAc,CAAC;AACrC,OAAO,EAAE,iBAAiB,EAAE,MAAM,aAAa,CAAC;AAChD,OAAO,EAAE,OAAO,EAAkB,MAAM,eAAe,CAAC;AACxD,OAAO,EAAE,KAAK,EAA2B,MAAM,YAAY,CAAC;AAM5D,cAAc;AACd,MAAM,OAAgB,YAA2C,SAAQ,OAAiB;IAItF,YAAY,OAAsC;QAC9C,KAAK,CAAC,OAAO,CAAC,CAAC;QACf,IAAI,CAAC,QAAQ,GAAG,IAAI,iBAAiB,CAAC,IAAI,SAAS,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;QAC3D,IAAI,OAAO,OAAO,CAAC,oBAAoB,CAAC,KAAK,UAAU,EAAE;YACrD,IAAI,CAAC,mBAAmB,GAAG,OAAO,CAAC,oBAAoB,CAAC,CAAC;SAC5D;IACL,CAAC;IAED,IAAW,kBAAkB,KAAK,OAAO,IAAI,CAAC,IAAI,CAAC,kBAAkB,CAAC,CAAC,CAAC;IAEjE,MAAM,CAAC,KAA0B,EAAE,WAAoB;QAC1D,OAAO,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,MAAM,EAAE,KAAK,EAAE,WAAW,CAAC,CAAC;IACrD,CAAC;IAEM,GAAG,CAAC,KAAa,EAAE,KAA0B,EAAE,WAAoB;QACtE,IAAI,WAAW,KAAK,SAAS,EAAE;YAC3B,WAAW,GAAG,IAAI,CAAC,mBAAmB,CAAC,IAAI,EAAE,KAAK,EAAE,KAAK,CAAC,CAAC;SAC9D;QACD,IAAI,IAAI,CAAC,QAAQ,CAAC,KAAK,EAAE,IAAI,CAAC,OAAO,CAAC,KAAK,CAAC,CAAC,EAAE;YAC3C,IAAI,CAAC,QAAQ,CAAC,KAAK,EAAE,KAAK,EAAE,WAAW,CAAC,CAAC;SAC5C;QACD,OAAO,IAAI,CAAC;IAChB,CAAC;IAEM,QAAQ,CAAC,KAAa,EAAE,KAAkB,EAAE,WAAoB;QACnE,IAAI,CAAC,QAAQ,CAAC,GAAG,CAAC,KAAK,EAAE,WAAY,CAAC,CAAC;QACvC,MAAM,UAAU,GAAG,IAAI,CAAC,IAAI,CAAC,kBAAkB,CAAC,WAAY,CAAC,CAAC;QAC9D,MAAM,KAAK,GAAG,IAAI,CAAC,QAAQ,CAAC,UAAU,CAAC,CAAC;QACxC,KAAK,aAAL,KAAK,uBAAL,KAAK,CAAE,GAAG,CAAC,KAAK,EAAE,KAAK,CAAC,CAAC;IAC7B,CAAC;IAEM,QAAQ,CAAC,KAAc,EAAE,IAAI,GAAG,GAAG,IAAI,CAAC,QAAQ,CAAC,MAAM,EAAE;QAC5D,MAAM,WAAW,GAAG,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC;QAC9C,MAAM,EAAE,IAAI,EAAE,EAAE,QAAQ,EAAE,IAAI,EAAE,OAAO,EAAE,EAAE,GAAG,IAAI,CAAC;QACnD,MAAM,MAAM,GAAG,CAAC,GAAG,QAAQ,EAAE,IAAI,KAAK,CAAC,IAAI,EAAE,KAAK,CAAC,IAAI,CAAC,CAAC,CAAC;QAC1D,IAAI,CAAC,IAAI,GAAM,IAAI,KAAK,CAAC,IAAI,EAAE,CAAC,GAAG,OAAO,EAAE,WAAW,CAAC,EAAE,MAAM,CAAC,CAAC;QAClE,OAAO,WAAW,CAAC;IACvB,CAAC;IAED,cAAc;IACd,aAAa;IACH,mBAAmB,CAAC,OAA+B,EAAE,KAAU,EAAE,MAAc;QACrF,MAAM,IAAI,KAAK,CAAC;;6FAEqE,CAAC,CAAC;IAC3F,CAAC;CACJ;AAED,cAAc;AACd,MAAM,OAAO,kBAAuD,SAAQ,YAAsB;CAAI;AACtG,cAAc;AACd,MAAM,OAAO,iBAAqD,SAAQ,YAAsB;IAI5F,YAAY,OAAsC;QAC9C,KAAK,CAAC,OAAO,CAAC,CAAC;QACf,IAAI,CAAC,QAAQ,GAAG,IAAI,iBAAiB,CAAC,IAAI,UAAU,CAAC,CAAC,CAAC,CAAC,CAAC;IAC7D,CAAC;IAED,cAAc;IACP,QAAQ,CAAC,KAAa,EAAE,KAAkB,EAAE,WAAoB;QACnE,MAAM,EAAE,GAAG,IAAI,CAAC,QAAQ,CAAC,GAAG,CAAC,KAAK,EAAE,WAAY,CAAC,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC;QAChE,MAAM,KAAK,GAAG,IAAI,CAAC,UAAU,CAAC,IAAI,CAAC,IAAI,CAAC,kBAAkB,CAAC,EAAE,CAAC,CAAE,CAAC;QACjE,MAAM,UAAU,GAAG,IAAI,CAAC,QAAQ,CAAC,GAAG,CAAC,KAAK,EAAE,KAAK,CAAC,MAAM,CAAC,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC;QACxE,KAAK,aAAL,KAAK,uBAAL,KAAK,CAAE,GAAG,CAAC,UAAU,EAAE,KAAK,CAAC,CAAC;IAClC,CAAC;CACJ","file":"union.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/utf8.d.ts b/igv_component/node_modules/apache-arrow/builder/utf8.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2f1c8c785281abf09cdc93641fe8a2a5560fa678
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/utf8.d.ts
@@ -0,0 +1,9 @@
+import { Utf8 } from '../type.js';
+import { VariableWidthBuilder, BuilderOptions } from '../builder.js';
+/** @ignore */
+export declare class Utf8Builder<TNull = any> extends VariableWidthBuilder<Utf8, TNull> {
+    constructor(opts: BuilderOptions<Utf8, TNull>);
+    get byteLength(): number;
+    setValue(index: number, value: string): void;
+    protected _flushPending(pending: Map<number, Uint8Array | undefined>, pendingLength: number): void;
+}
diff --git a/igv_component/node_modules/apache-arrow/builder/utf8.d.ts.map b/igv_component/node_modules/apache-arrow/builder/utf8.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..0f62aba33bdd498d8e10ee4315ac14cd4eecb808
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/utf8.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/utf8.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,IAAI,EAAE,MAAM,YAAY,CAAC;AAIlC,OAAO,EAAE,oBAAoB,EAAE,cAAc,EAAE,MAAM,eAAe,CAAC;AAErE,cAAc;AACd,qBAAa,WAAW,CAAC,KAAK,GAAG,GAAG,CAAE,SAAQ,oBAAoB,CAAC,IAAI,EAAE,KAAK,CAAC;gBAC/D,IAAI,EAAE,cAAc,CAAC,IAAI,EAAE,KAAK,CAAC;IAI7C,IAAW,UAAU,IAAI,MAAM,CAM9B;IACM,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM;IAI5C,SAAS,CAAC,aAAa,CAAC,OAAO,EAAE,GAAG,CAAC,MAAM,EAAE,UAAU,GAAG,SAAS,CAAC,EAAE,aAAa,EAAE,MAAM,GAAG,IAAI;CACrG","file":"utf8.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/utf8.js b/igv_component/node_modules/apache-arrow/builder/utf8.js
new file mode 100644
index 0000000000000000000000000000000000000000..476eae62224161d7f3433fe75c3ec4f4d135d7b1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/utf8.js
@@ -0,0 +1,46 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Utf8Builder = void 0;
+const utf8_js_1 = require("../util/utf8.js");
+const binary_js_1 = require("./binary.js");
+const buffer_js_1 = require("./buffer.js");
+const builder_js_1 = require("../builder.js");
+/** @ignore */
+class Utf8Builder extends builder_js_1.VariableWidthBuilder {
+    constructor(opts) {
+        super(opts);
+        this._values = new buffer_js_1.BufferBuilder(new Uint8Array(0));
+    }
+    get byteLength() {
+        let size = this._pendingLength + (this.length * 4);
+        this._offsets && (size += this._offsets.byteLength);
+        this._values && (size += this._values.byteLength);
+        this._nulls && (size += this._nulls.byteLength);
+        return size;
+    }
+    setValue(index, value) {
+        return super.setValue(index, (0, utf8_js_1.encodeUtf8)(value));
+    }
+    // @ts-ignore
+    _flushPending(pending, pendingLength) { }
+}
+exports.Utf8Builder = Utf8Builder;
+Utf8Builder.prototype._flushPending = binary_js_1.BinaryBuilder.prototype._flushPending;
+
+//# sourceMappingURL=utf8.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/utf8.js.map b/igv_component/node_modules/apache-arrow/builder/utf8.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..b29d4add6d8bd7f5d00d7bffb84f45f31ff523b3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/utf8.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/utf8.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAGrB,6CAA6C;AAC7C,2CAA4C;AAC5C,2CAA4C;AAC5C,8CAAqE;AAErE,cAAc;AACd,MAAa,WAAyB,SAAQ,iCAAiC;IAC3E,YAAY,IAAiC;QACzC,KAAK,CAAC,IAAI,CAAC,CAAC;QACZ,IAAI,CAAC,OAAO,GAAG,IAAI,yBAAa,CAAC,IAAI,UAAU,CAAC,CAAC,CAAC,CAAC,CAAC;IACxD,CAAC;IACD,IAAW,UAAU;QACjB,IAAI,IAAI,GAAG,IAAI,CAAC,cAAc,GAAG,CAAC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;QACnD,IAAI,CAAC,QAAQ,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,QAAQ,CAAC,UAAU,CAAC,CAAC;QACpD,IAAI,CAAC,OAAO,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,OAAO,CAAC,UAAU,CAAC,CAAC;QAClD,IAAI,CAAC,MAAM,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,MAAM,CAAC,UAAU,CAAC,CAAC;QAChD,OAAO,IAAI,CAAC;IAChB,CAAC;IACM,QAAQ,CAAC,KAAa,EAAE,KAAa;QACxC,OAAO,KAAK,CAAC,QAAQ,CAAC,KAAK,EAAE,IAAA,oBAAU,EAAC,KAAK,CAAQ,CAAC,CAAC;IAC3D,CAAC;IACD,aAAa;IACH,aAAa,CAAC,OAA4C,EAAE,aAAqB,IAAU,CAAC;CACzG;AAjBD,kCAiBC;AAEA,WAAW,CAAC,SAAiB,CAAC,aAAa,GAAI,yBAAa,CAAC,SAAiB,CAAC,aAAa,CAAC","file":"utf8.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/utf8.mjs b/igv_component/node_modules/apache-arrow/builder/utf8.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..7f17117fd6ec39754a17600486260895ff2877b9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/utf8.mjs
@@ -0,0 +1,42 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { encodeUtf8 } from '../util/utf8.mjs';
+import { BinaryBuilder } from './binary.mjs';
+import { BufferBuilder } from './buffer.mjs';
+import { VariableWidthBuilder } from '../builder.mjs';
+/** @ignore */
+export class Utf8Builder extends VariableWidthBuilder {
+    constructor(opts) {
+        super(opts);
+        this._values = new BufferBuilder(new Uint8Array(0));
+    }
+    get byteLength() {
+        let size = this._pendingLength + (this.length * 4);
+        this._offsets && (size += this._offsets.byteLength);
+        this._values && (size += this._values.byteLength);
+        this._nulls && (size += this._nulls.byteLength);
+        return size;
+    }
+    setValue(index, value) {
+        return super.setValue(index, encodeUtf8(value));
+    }
+    // @ts-ignore
+    _flushPending(pending, pendingLength) { }
+}
+Utf8Builder.prototype._flushPending = BinaryBuilder.prototype._flushPending;
+
+//# sourceMappingURL=utf8.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/utf8.mjs.map b/igv_component/node_modules/apache-arrow/builder/utf8.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..7d86e438e4ffe247c9c28f9a40a6f9f61bca3cf1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/utf8.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/utf8.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAGrB,OAAO,EAAE,UAAU,EAAE,MAAM,iBAAiB,CAAC;AAC7C,OAAO,EAAE,aAAa,EAAE,MAAM,aAAa,CAAC;AAC5C,OAAO,EAAE,aAAa,EAAE,MAAM,aAAa,CAAC;AAC5C,OAAO,EAAE,oBAAoB,EAAkB,MAAM,eAAe,CAAC;AAErE,cAAc;AACd,MAAM,OAAO,WAAyB,SAAQ,oBAAiC;IAC3E,YAAY,IAAiC;QACzC,KAAK,CAAC,IAAI,CAAC,CAAC;QACZ,IAAI,CAAC,OAAO,GAAG,IAAI,aAAa,CAAC,IAAI,UAAU,CAAC,CAAC,CAAC,CAAC,CAAC;IACxD,CAAC;IACD,IAAW,UAAU;QACjB,IAAI,IAAI,GAAG,IAAI,CAAC,cAAc,GAAG,CAAC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;QACnD,IAAI,CAAC,QAAQ,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,QAAQ,CAAC,UAAU,CAAC,CAAC;QACpD,IAAI,CAAC,OAAO,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,OAAO,CAAC,UAAU,CAAC,CAAC;QAClD,IAAI,CAAC,MAAM,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,MAAM,CAAC,UAAU,CAAC,CAAC;QAChD,OAAO,IAAI,CAAC;IAChB,CAAC;IACM,QAAQ,CAAC,KAAa,EAAE,KAAa;QACxC,OAAO,KAAK,CAAC,QAAQ,CAAC,KAAK,EAAE,UAAU,CAAC,KAAK,CAAQ,CAAC,CAAC;IAC3D,CAAC;IACD,aAAa;IACH,aAAa,CAAC,OAA4C,EAAE,aAAqB,IAAU,CAAC;CACzG;AAEA,WAAW,CAAC,SAAiB,CAAC,aAAa,GAAI,aAAa,CAAC,SAAiB,CAAC,aAAa,CAAC","file":"utf8.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/valid.d.ts b/igv_component/node_modules/apache-arrow/builder/valid.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..1ac732b937de198bf895bf676c3a5ada1b9839fe
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/valid.d.ts
@@ -0,0 +1,22 @@
+import { DataType } from '../type.js';
+/**
+ * Dynamically compile the null values into an `isValid()` function whose
+ * implementation is a switch statement. Microbenchmarks in v8 indicate
+ * this approach is 25% faster than using an ES6 Map.
+ *
+ * @example
+ * console.log(createIsValidFunction([null, 'N/A', NaN]));
+ * `function (x) {
+ *     if (x !== x) return false;
+ *     switch (x) {
+ *         case null:
+ *         case "N/A":
+ *             return false;
+ *     }
+ *     return true;
+ * }`
+ *
+ * @ignore
+ * @param nullValues
+ */
+export declare function createIsValidFunction<T extends DataType = any, TNull = any>(nullValues?: ReadonlyArray<TNull>): (value: T['TValue'] | TNull) => boolean;
diff --git a/igv_component/node_modules/apache-arrow/builder/valid.d.ts.map b/igv_component/node_modules/apache-arrow/builder/valid.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..79b3a197cf647dd4891167fdf290a5007ae9b9be
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/valid.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/valid.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,QAAQ,EAAE,MAAM,YAAY,CAAC;AAItC;;;;;;;;;;;;;;;;;;;GAmBG;AACH,wBAAgB,qBAAqB,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,KAAK,GAAG,GAAG,EAAE,UAAU,CAAC,EAAE,aAAa,CAAC,KAAK,CAAC,WAwB3C,CAAC,CAAC,QAAQ,CAAC,GAAG,KAAK,KAAK,OAAO,CACjG","file":"valid.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/valid.js b/igv_component/node_modules/apache-arrow/builder/valid.js
new file mode 100644
index 0000000000000000000000000000000000000000..3f21578add9b123eb596ff115bc0f2396ffca7f1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/valid.js
@@ -0,0 +1,75 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.createIsValidFunction = void 0;
+const pretty_js_1 = require("../util/pretty.js");
+const compat_js_1 = require("../util/compat.js");
+/**
+ * Dynamically compile the null values into an `isValid()` function whose
+ * implementation is a switch statement. Microbenchmarks in v8 indicate
+ * this approach is 25% faster than using an ES6 Map.
+ *
+ * @example
+ * console.log(createIsValidFunction([null, 'N/A', NaN]));
+ * `function (x) {
+ *     if (x !== x) return false;
+ *     switch (x) {
+ *         case null:
+ *         case "N/A":
+ *             return false;
+ *     }
+ *     return true;
+ * }`
+ *
+ * @ignore
+ * @param nullValues
+ */
+function createIsValidFunction(nullValues) {
+    if (!nullValues || nullValues.length <= 0) {
+        // @ts-ignore
+        return function isValid(value) { return true; };
+    }
+    let fnBody = '';
+    const noNaNs = nullValues.filter((x) => x === x);
+    if (noNaNs.length > 0) {
+        fnBody = `
+    switch (x) {${noNaNs.map((x) => `
+        case ${valueToCase(x)}:`).join('')}
+            return false;
+    }`;
+    }
+    // NaN doesn't equal anything including itself, so it doesn't work as a
+    // switch case. Instead we must explicitly check for NaN before the switch.
+    if (nullValues.length !== noNaNs.length) {
+        fnBody = `if (x !== x) return false;\n${fnBody}`;
+    }
+    return new Function(`x`, `${fnBody}\nreturn true;`);
+}
+exports.createIsValidFunction = createIsValidFunction;
+/** @ignore */
+function valueToCase(x) {
+    if (typeof x !== 'bigint') {
+        return (0, pretty_js_1.valueToString)(x);
+    }
+    else if (compat_js_1.BigIntAvailable) {
+        return `${(0, pretty_js_1.valueToString)(x)}n`;
+    }
+    return `"${(0, pretty_js_1.valueToString)(x)}"`;
+}
+
+//# sourceMappingURL=valid.js.map
diff --git a/igv_component/node_modules/apache-arrow/builder/valid.js.map b/igv_component/node_modules/apache-arrow/builder/valid.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..1d7d1d6cda9b1c2cc3897b96941ed2c7f77a3710
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/valid.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/valid.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAGrB,iDAAkD;AAClD,iDAAoD;AAEpD;;;;;;;;;;;;;;;;;;;GAmBG;AACH,SAAgB,qBAAqB,CAAwC,UAAiC;IAE1G,IAAI,CAAC,UAAU,IAAI,UAAU,CAAC,MAAM,IAAI,CAAC,EAAE;QACvC,aAAa;QACb,OAAO,SAAS,OAAO,CAAC,KAAU,IAAI,OAAO,IAAI,CAAC,CAAC,CAAC,CAAC;KACxD;IAED,IAAI,MAAM,GAAG,EAAE,CAAC;IAChB,MAAM,MAAM,GAAG,UAAU,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC;IAEjD,IAAI,MAAM,CAAC,MAAM,GAAG,CAAC,EAAE;QACnB,MAAM,GAAG;kBACC,MAAM,CAAC,GAAG,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC;eACrB,WAAW,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC,IAAI,CAAC,EAAE,CAAC;;MAEpC,CAAC;KACF;IAED,uEAAuE;IACvE,2EAA2E;IAC3E,IAAI,UAAU,CAAC,MAAM,KAAK,MAAM,CAAC,MAAM,EAAE;QACrC,MAAM,GAAG,+BAA+B,MAAM,EAAE,CAAC;KACpD;IAED,OAAO,IAAI,QAAQ,CAAC,GAAG,EAAE,GAAG,MAAM,gBAAgB,CAA4C,CAAC;AACnG,CAAC;AAzBD,sDAyBC;AAED,cAAc;AACd,SAAS,WAAW,CAAC,CAAM;IACvB,IAAI,OAAO,CAAC,KAAK,QAAQ,EAAE;QACvB,OAAO,IAAA,yBAAa,EAAC,CAAC,CAAC,CAAC;KAC3B;SAAM,IAAI,2BAAe,EAAE;QACxB,OAAO,GAAG,IAAA,yBAAa,EAAC,CAAC,CAAC,GAAG,CAAC;KACjC;IACD,OAAO,IAAI,IAAA,yBAAa,EAAC,CAAC,CAAC,GAAG,CAAC;AACnC,CAAC","file":"valid.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/builder/valid.mjs b/igv_component/node_modules/apache-arrow/builder/valid.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..10784bbf073b1eef4f5e2d5a279985ad65f22499
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/valid.mjs
@@ -0,0 +1,71 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { valueToString } from '../util/pretty.mjs';
+import { BigIntAvailable } from '../util/compat.mjs';
+/**
+ * Dynamically compile the null values into an `isValid()` function whose
+ * implementation is a switch statement. Microbenchmarks in v8 indicate
+ * this approach is 25% faster than using an ES6 Map.
+ *
+ * @example
+ * console.log(createIsValidFunction([null, 'N/A', NaN]));
+ * `function (x) {
+ *     if (x !== x) return false;
+ *     switch (x) {
+ *         case null:
+ *         case "N/A":
+ *             return false;
+ *     }
+ *     return true;
+ * }`
+ *
+ * @ignore
+ * @param nullValues
+ */
+export function createIsValidFunction(nullValues) {
+    if (!nullValues || nullValues.length <= 0) {
+        // @ts-ignore
+        return function isValid(value) { return true; };
+    }
+    let fnBody = '';
+    const noNaNs = nullValues.filter((x) => x === x);
+    if (noNaNs.length > 0) {
+        fnBody = `
+    switch (x) {${noNaNs.map((x) => `
+        case ${valueToCase(x)}:`).join('')}
+            return false;
+    }`;
+    }
+    // NaN doesn't equal anything including itself, so it doesn't work as a
+    // switch case. Instead we must explicitly check for NaN before the switch.
+    if (nullValues.length !== noNaNs.length) {
+        fnBody = `if (x !== x) return false;\n${fnBody}`;
+    }
+    return new Function(`x`, `${fnBody}\nreturn true;`);
+}
+/** @ignore */
+function valueToCase(x) {
+    if (typeof x !== 'bigint') {
+        return valueToString(x);
+    }
+    else if (BigIntAvailable) {
+        return `${valueToString(x)}n`;
+    }
+    return `"${valueToString(x)}"`;
+}
+
+//# sourceMappingURL=valid.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/builder/valid.mjs.map b/igv_component/node_modules/apache-arrow/builder/valid.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..5a3d8af271c05c86cbd3c501c47500a1098677bb
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/builder/valid.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["builder/valid.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAGrB,OAAO,EAAE,aAAa,EAAE,MAAM,mBAAmB,CAAC;AAClD,OAAO,EAAE,eAAe,EAAE,MAAM,mBAAmB,CAAC;AAEpD;;;;;;;;;;;;;;;;;;;GAmBG;AACH,MAAM,UAAU,qBAAqB,CAAwC,UAAiC;IAE1G,IAAI,CAAC,UAAU,IAAI,UAAU,CAAC,MAAM,IAAI,CAAC,EAAE;QACvC,aAAa;QACb,OAAO,SAAS,OAAO,CAAC,KAAU,IAAI,OAAO,IAAI,CAAC,CAAC,CAAC,CAAC;KACxD;IAED,IAAI,MAAM,GAAG,EAAE,CAAC;IAChB,MAAM,MAAM,GAAG,UAAU,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC;IAEjD,IAAI,MAAM,CAAC,MAAM,GAAG,CAAC,EAAE;QACnB,MAAM,GAAG;kBACC,MAAM,CAAC,GAAG,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC;eACrB,WAAW,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC,IAAI,CAAC,EAAE,CAAC;;MAEpC,CAAC;KACF;IAED,uEAAuE;IACvE,2EAA2E;IAC3E,IAAI,UAAU,CAAC,MAAM,KAAK,MAAM,CAAC,MAAM,EAAE;QACrC,MAAM,GAAG,+BAA+B,MAAM,EAAE,CAAC;KACpD;IAED,OAAO,IAAI,QAAQ,CAAC,GAAG,EAAE,GAAG,MAAM,gBAAgB,CAA4C,CAAC;AACnG,CAAC;AAED,cAAc;AACd,SAAS,WAAW,CAAC,CAAM;IACvB,IAAI,OAAO,CAAC,KAAK,QAAQ,EAAE;QACvB,OAAO,aAAa,CAAC,CAAC,CAAC,CAAC;KAC3B;SAAM,IAAI,eAAe,EAAE;QACxB,OAAO,GAAG,aAAa,CAAC,CAAC,CAAC,GAAG,CAAC;KACjC;IACD,OAAO,IAAI,aAAa,CAAC,CAAC,CAAC,GAAG,CAAC;AACnC,CAAC","file":"valid.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/data.d.ts b/igv_component/node_modules/apache-arrow/data.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6c4b8645ee25007fe35e9520241a77e9fa7126f7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/data.d.ts
@@ -0,0 +1,159 @@
+import { Vector } from './vector.js';
+import { BufferType } from './enum.js';
+import { DataType } from './type.js';
+/** @ignore */ export declare type kUnknownNullCount = -1;
+/** @ignore */ export declare const kUnknownNullCount = -1;
+/** @ignore */ export declare type NullBuffer = Uint8Array | null | undefined;
+/** @ignore */ export declare type TypeIdsBuffer = Int8Array | ArrayLike<number> | Iterable<number> | undefined;
+/** @ignore */ export declare type ValueOffsetsBuffer = Int32Array | ArrayLike<number> | Iterable<number> | undefined;
+/** @ignore */ export declare type DataBuffer<T extends DataType> = T['TArray'] | ArrayLike<number> | Iterable<number> | undefined;
+/** @ignore */
+export interface Buffers<T extends DataType> {
+    [BufferType.OFFSET]: Int32Array;
+    [BufferType.DATA]: T['TArray'];
+    [BufferType.VALIDITY]: Uint8Array;
+    [BufferType.TYPE]: T['TArray'];
+}
+/** @ignore */
+export interface Data<T extends DataType = DataType> {
+    readonly TType: T['TType'];
+    readonly TArray: T['TArray'];
+    readonly TValue: T['TValue'];
+}
+/**
+ * Data structure underlying {@link Vector}s. Use the convenience method {@link makeData}.
+ */
+export declare class Data<T extends DataType = DataType> {
+    readonly type: T;
+    readonly length: number;
+    readonly offset: number;
+    readonly stride: number;
+    readonly nullable: boolean;
+    readonly children: Data[];
+    /**
+     * The dictionary for this Vector, if any. Only used for Dictionary type.
+     */
+    dictionary?: Vector;
+    readonly values: Buffers<T>[BufferType.DATA];
+    readonly typeIds: Buffers<T>[BufferType.TYPE];
+    readonly nullBitmap: Buffers<T>[BufferType.VALIDITY];
+    readonly valueOffsets: Buffers<T>[BufferType.OFFSET];
+    get typeId(): T['TType'];
+    get ArrayType(): T['ArrayType'];
+    get buffers(): Buffers<T>;
+    get byteLength(): number;
+    protected _nullCount: number | kUnknownNullCount;
+    get nullCount(): number;
+    constructor(type: T, offset: number, length: number, nullCount?: number, buffers?: Partial<Buffers<T>> | Data<T>, children?: Data[], dictionary?: Vector);
+    getValid(index: number): boolean;
+    setValid(index: number, value: boolean): boolean;
+    clone<R extends DataType = T>(type?: R, offset?: number, length?: number, nullCount?: number, buffers?: Buffers<R>, children?: Data[]): Data<R>;
+    slice(offset: number, length: number): Data<T>;
+    _changeLengthAndBackfillNullBitmap(newLength: number): Data<T>;
+    protected _sliceBuffers(offset: number, length: number, stride: number, typeId: T['TType']): Buffers<T>;
+    protected _sliceChildren(children: Data[], offset: number, length: number): Data[];
+}
+import { Dictionary, Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct, Float, Int, Date_, Interval, Time, Timestamp, Union, DenseUnion, SparseUnion } from './type.js';
+/** @ignore */
+interface DataProps_<T extends DataType> {
+    type: T;
+    offset?: number;
+    length?: number;
+    nullCount?: number;
+    nullBitmap?: NullBuffer;
+}
+interface NullDataProps<T extends Null> {
+    type: T;
+    offset?: number;
+    length?: number;
+}
+interface IntDataProps<T extends Int> extends DataProps_<T> {
+    data?: DataBuffer<T>;
+}
+interface DictionaryDataProps<T extends Dictionary> extends DataProps_<T> {
+    data?: DataBuffer<T>;
+    dictionary?: Vector<T['dictionary']>;
+}
+interface FloatDataProps<T extends Float> extends DataProps_<T> {
+    data?: DataBuffer<T>;
+}
+interface BoolDataProps<T extends Bool> extends DataProps_<T> {
+    data?: DataBuffer<T>;
+}
+interface DecimalDataProps<T extends Decimal> extends DataProps_<T> {
+    data?: DataBuffer<T>;
+}
+interface Date_DataProps<T extends Date_> extends DataProps_<T> {
+    data?: DataBuffer<T>;
+}
+interface TimeDataProps<T extends Time> extends DataProps_<T> {
+    data?: DataBuffer<T>;
+}
+interface TimestampDataProps<T extends Timestamp> extends DataProps_<T> {
+    data?: DataBuffer<T>;
+}
+interface IntervalDataProps<T extends Interval> extends DataProps_<T> {
+    data?: DataBuffer<T>;
+}
+interface FixedSizeBinaryDataProps<T extends FixedSizeBinary> extends DataProps_<T> {
+    data?: DataBuffer<T>;
+}
+interface BinaryDataProps<T extends Binary> extends DataProps_<T> {
+    valueOffsets: ValueOffsetsBuffer;
+    data?: DataBuffer<T>;
+}
+interface Utf8DataProps<T extends Utf8> extends DataProps_<T> {
+    valueOffsets: ValueOffsetsBuffer;
+    data?: DataBuffer<T>;
+}
+interface ListDataProps<T extends List> extends DataProps_<T> {
+    valueOffsets: ValueOffsetsBuffer;
+    child: Data<T['valueType']>;
+}
+interface FixedSizeListDataProps<T extends FixedSizeList> extends DataProps_<T> {
+    child: Data<T['valueType']>;
+}
+interface StructDataProps<T extends Struct> extends DataProps_<T> {
+    children: Data[];
+}
+interface Map_DataProps<T extends Map_> extends DataProps_<T> {
+    valueOffsets: ValueOffsetsBuffer;
+    child: Data;
+}
+interface SparseUnionDataProps<T extends SparseUnion> extends DataProps_<T> {
+    typeIds: TypeIdsBuffer;
+    children: Data[];
+}
+interface DenseUnionDataProps<T extends DenseUnion> extends DataProps_<T> {
+    typeIds: TypeIdsBuffer;
+    children: Data[];
+    valueOffsets: ValueOffsetsBuffer;
+}
+interface UnionDataProps<T extends Union> extends DataProps_<T> {
+    typeIds: TypeIdsBuffer;
+    children: Data[];
+    valueOffsets?: ValueOffsetsBuffer;
+}
+export declare type DataProps<T extends DataType> = (T extends Null ? NullDataProps<T> : T extends Int ? IntDataProps<T> : T extends Dictionary ? DictionaryDataProps<T> : T extends Float ? FloatDataProps<T> : T extends Bool ? BoolDataProps<T> : T extends Decimal ? DecimalDataProps<T> : T extends Date_ ? Date_DataProps<T> : T extends Time ? TimeDataProps<T> : T extends Timestamp ? TimestampDataProps<T> : T extends Interval ? IntervalDataProps<T> : T extends FixedSizeBinary ? FixedSizeBinaryDataProps<T> : T extends Binary ? BinaryDataProps<T> : T extends Utf8 ? Utf8DataProps<T> : T extends List ? ListDataProps<T> : T extends FixedSizeList ? FixedSizeListDataProps<T> : T extends Struct ? StructDataProps<T> : T extends Map_ ? Map_DataProps<T> : T extends SparseUnion ? SparseUnionDataProps<T> : T extends DenseUnion ? DenseUnionDataProps<T> : T extends Union ? UnionDataProps<T> : DataProps_<T>);
+export declare function makeData<T extends Null>(props: NullDataProps<T>): Data<T>;
+export declare function makeData<T extends Int>(props: IntDataProps<T>): Data<T>;
+export declare function makeData<T extends Dictionary>(props: DictionaryDataProps<T>): Data<T>;
+export declare function makeData<T extends Float>(props: FloatDataProps<T>): Data<T>;
+export declare function makeData<T extends Bool>(props: BoolDataProps<T>): Data<T>;
+export declare function makeData<T extends Decimal>(props: DecimalDataProps<T>): Data<T>;
+export declare function makeData<T extends Date_>(props: Date_DataProps<T>): Data<T>;
+export declare function makeData<T extends Time>(props: TimeDataProps<T>): Data<T>;
+export declare function makeData<T extends Timestamp>(props: TimestampDataProps<T>): Data<T>;
+export declare function makeData<T extends Interval>(props: IntervalDataProps<T>): Data<T>;
+export declare function makeData<T extends FixedSizeBinary>(props: FixedSizeBinaryDataProps<T>): Data<T>;
+export declare function makeData<T extends Binary>(props: BinaryDataProps<T>): Data<T>;
+export declare function makeData<T extends Utf8>(props: Utf8DataProps<T>): Data<T>;
+export declare function makeData<T extends List>(props: ListDataProps<T>): Data<T>;
+export declare function makeData<T extends FixedSizeList>(props: FixedSizeListDataProps<T>): Data<T>;
+export declare function makeData<T extends Struct>(props: StructDataProps<T>): Data<T>;
+export declare function makeData<T extends Map_>(props: Map_DataProps<T>): Data<T>;
+export declare function makeData<T extends SparseUnion>(props: SparseUnionDataProps<T>): Data<T>;
+export declare function makeData<T extends DenseUnion>(props: DenseUnionDataProps<T>): Data<T>;
+export declare function makeData<T extends Union>(props: UnionDataProps<T>): Data<T>;
+export declare function makeData<T extends DataType>(props: DataProps_<T>): Data<T>;
+export {};
diff --git a/igv_component/node_modules/apache-arrow/data.d.ts.map b/igv_component/node_modules/apache-arrow/data.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..1acb84b11051c1ca430bed4672333a1f96cdffaf
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/data.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["data.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AACrC,OAAO,EAAE,UAAU,EAAQ,MAAM,WAAW,CAAC;AAC7C,OAAO,EAAE,QAAQ,EAAiB,MAAM,WAAW,CAAC;AAOpD,cAAc,CAAC,oBAAY,iBAAiB,GAAG,CAAC,CAAC,CAAC;AAClD,cAAc,CAAC,eAAO,MAAM,iBAAiB,KAAK,CAAC;AAEnD,cAAc,CAAC,oBAAY,UAAU,GAAG,UAAU,GAAG,IAAI,GAAG,SAAS,CAAC;AACtE,cAAc,CAAC,oBAAY,aAAa,GAAG,SAAS,GAAG,SAAS,CAAC,MAAM,CAAC,GAAG,QAAQ,CAAC,MAAM,CAAC,GAAG,SAAS,CAAC;AACxG,cAAc,CAAC,oBAAY,kBAAkB,GAAG,UAAU,GAAG,SAAS,CAAC,MAAM,CAAC,GAAG,QAAQ,CAAC,MAAM,CAAC,GAAG,SAAS,CAAC;AAC9G,cAAc,CAAC,oBAAY,UAAU,CAAC,CAAC,SAAS,QAAQ,IAAI,CAAC,CAAC,QAAQ,CAAC,GAAG,SAAS,CAAC,MAAM,CAAC,GAAG,QAAQ,CAAC,MAAM,CAAC,GAAG,SAAS,CAAC;AAE3H,cAAc;AACd,MAAM,WAAW,OAAO,CAAC,CAAC,SAAS,QAAQ;IACvC,CAAC,UAAU,CAAC,MAAM,CAAC,EAAE,UAAU,CAAC;IAChC,CAAC,UAAU,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC,QAAQ,CAAC,CAAC;IAC/B,CAAC,UAAU,CAAC,QAAQ,CAAC,EAAE,UAAU,CAAC;IAClC,CAAC,UAAU,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC,QAAQ,CAAC,CAAC;CAClC;AAED,cAAc;AACd,MAAM,WAAW,IAAI,CAAC,CAAC,SAAS,QAAQ,GAAG,QAAQ;IAC/C,QAAQ,CAAC,KAAK,EAAE,CAAC,CAAC,OAAO,CAAC,CAAC;IAC3B,QAAQ,CAAC,MAAM,EAAE,CAAC,CAAC,QAAQ,CAAC,CAAC;IAC7B,QAAQ,CAAC,MAAM,EAAE,CAAC,CAAC,QAAQ,CAAC,CAAC;CAChC;AAED;;GAEG;AACH,qBAAa,IAAI,CAAC,CAAC,SAAS,QAAQ,GAAG,QAAQ;IAE3C,SAAwB,IAAI,EAAE,CAAC,CAAC;IAChC,SAAwB,MAAM,EAAE,MAAM,CAAC;IACvC,SAAwB,MAAM,EAAE,MAAM,CAAC;IACvC,SAAwB,MAAM,EAAE,MAAM,CAAC;IACvC,SAAwB,QAAQ,EAAE,OAAO,CAAC;IAC1C,SAAwB,QAAQ,EAAE,IAAI,EAAE,CAAC;IAEzC;;OAEG;IACY,UAAU,CAAC,EAAE,MAAM,CAAC;IAEnC,SAAwB,MAAM,EAAE,OAAO,CAAC,CAAC,CAAC,CAAC,UAAU,CAAC,IAAI,CAAC,CAAC;IAC5D,SAAwB,OAAO,EAAE,OAAO,CAAC,CAAC,CAAC,CAAC,UAAU,CAAC,IAAI,CAAC,CAAC;IAC7D,SAAwB,UAAU,EAAE,OAAO,CAAC,CAAC,CAAC,CAAC,UAAU,CAAC,QAAQ,CAAC,CAAC;IACpE,SAAwB,YAAY,EAAE,OAAO,CAAC,CAAC,CAAC,CAAC,UAAU,CAAC,MAAM,CAAC,CAAC;IAEpE,IAAW,MAAM,IAAI,CAAC,CAAC,OAAO,CAAC,CAA6B;IAC5D,IAAW,SAAS,IAAI,CAAC,CAAC,WAAW,CAAC,CAAgC;IACtE,IAAW,OAAO,eAEjB;IACD,IAAW,UAAU,IAAI,MAAM,CAQ9B;IAED,SAAS,CAAC,UAAU,EAAE,MAAM,GAAG,iBAAiB,CAAC;IAEjD,IAAW,SAAS,WAOnB;gBAEW,IAAI,EAAE,CAAC,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,SAAS,CAAC,EAAE,MAAM,EAAE,OAAO,CAAC,EAAE,OAAO,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,CAAC,CAAC,CAAC,EAAE,QAAQ,GAAE,IAAI,EAAO,EAAE,UAAU,CAAC,EAAE,MAAM;IA0BrJ,QAAQ,CAAC,KAAK,EAAE,MAAM;IAStB,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,OAAO;IAmBtC,KAAK,CAAC,CAAC,SAAS,QAAQ,GAAG,CAAC,EAAE,IAAI,GAAE,CAAoB,EAAE,MAAM,SAAc,EAAE,MAAM,SAAc,EAAE,SAAS,SAAkB,EAAE,OAAO,GAAE,OAAO,CAAC,CAAC,CAAa,EAAE,QAAQ,GAAE,IAAI,EAAkB;IAIpM,KAAK,CAAC,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,GAAG,IAAI,CAAC,CAAC,CAAC;IAa9C,kCAAkC,CAAC,SAAS,EAAE,MAAM,GAAG,IAAI,CAAC,CAAC,CAAC;IAkBrE,SAAS,CAAC,aAAa,CAAC,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,CAAC,CAAC,OAAO,CAAC,GAAG,OAAO,CAAC,CAAC,CAAC;IAYvG,SAAS,CAAC,cAAc,CAAC,QAAQ,EAAE,IAAI,EAAE,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,GAAG,IAAI,EAAE;CAGrF;AAID,OAAO,EACH,UAAU,EACV,IAAI,EAAE,IAAI,EAAE,IAAI,EAAE,MAAM,EAAE,OAAO,EAAE,eAAe,EAAE,IAAI,EAAE,aAAa,EAAE,IAAI,EAAE,MAAM,EACrF,KAAK,EACL,GAAG,EACH,KAAK,EACL,QAAQ,EACR,IAAI,EACJ,SAAS,EACT,KAAK,EAAE,UAAU,EAAE,WAAW,EACjC,MAAM,WAAW,CAAC;AAkJnB,cAAc;AACd,UAAU,UAAU,CAAC,CAAC,SAAS,QAAQ;IACnC,IAAI,EAAE,CAAC,CAAC;IACR,MAAM,CAAC,EAAE,MAAM,CAAC;IAChB,MAAM,CAAC,EAAE,MAAM,CAAC;IAChB,SAAS,CAAC,EAAE,MAAM,CAAC;IACnB,UAAU,CAAC,EAAE,UAAU,CAAC;CAC3B;AAED,UAAU,aAAa,CAAC,CAAC,SAAS,IAAI;IAAI,IAAI,EAAE,CAAC,CAAC;IAAC,MAAM,CAAC,EAAE,MAAM,CAAC;IAAC,MAAM,CAAC,EAAE,MAAM,CAAA;CAAE;AACrF,UAAU,YAAY,CAAC,CAAC,SAAS,GAAG,CAAE,SAAQ,UAAU,CAAC,CAAC,CAAC;IAAG,IAAI,CAAC,EAAE,UAAU,CAAC,CAAC,CAAC,CAAA;CAAE;AACpF,UAAU,mBAAmB,CAAC,CAAC,SAAS,UAAU,CAAE,SAAQ,UAAU,CAAC,CAAC,CAAC;IAAG,IAAI,CAAC,EAAE,UAAU,CAAC,CAAC,CAAC,CAAC;IAAC,UAAU,CAAC,EAAE,MAAM,CAAC,CAAC,CAAC,YAAY,CAAC,CAAC,CAAA;CAAE;AACxI,UAAU,cAAc,CAAC,CAAC,SAAS,KAAK,CAAE,SAAQ,UAAU,CAAC,CAAC,CAAC;IAAG,IAAI,CAAC,EAAE,UAAU,CAAC,CAAC,CAAC,CAAA;CAAE;AACxF,UAAU,aAAa,CAAC,CAAC,SAAS,IAAI,CAAE,SAAQ,UAAU,CAAC,CAAC,CAAC;IAAG,IAAI,CAAC,EAAE,UAAU,CAAC,CAAC,CAAC,CAAA;CAAE;AACtF,UAAU,gBAAgB,CAAC,CAAC,SAAS,OAAO,CAAE,SAAQ,UAAU,CAAC,CAAC,CAAC;IAAG,IAAI,CAAC,EAAE,UAAU,CAAC,CAAC,CAAC,CAAA;CAAE;AAC5F,UAAU,cAAc,CAAC,CAAC,SAAS,KAAK,CAAE,SAAQ,UAAU,CAAC,CAAC,CAAC;IAAG,IAAI,CAAC,EAAE,UAAU,CAAC,CAAC,CAAC,CAAA;CAAE;AACxF,UAAU,aAAa,CAAC,CAAC,SAAS,IAAI,CAAE,SAAQ,UAAU,CAAC,CAAC,CAAC;IAAG,IAAI,CAAC,EAAE,UAAU,CAAC,CAAC,CAAC,CAAA;CAAE;AACtF,UAAU,kBAAkB,CAAC,CAAC,SAAS,SAAS,CAAE,SAAQ,UAAU,CAAC,CAAC,CAAC;IAAG,IAAI,CAAC,EAAE,UAAU,CAAC,CAAC,CAAC,CAAA;CAAE;AAChG,UAAU,iBAAiB,CAAC,CAAC,SAAS,QAAQ,CAAE,SAAQ,UAAU,CAAC,CAAC,CAAC;IAAG,IAAI,CAAC,EAAE,UAAU,CAAC,CAAC,CAAC,CAAA;CAAE;AAC9F,UAAU,wBAAwB,CAAC,CAAC,SAAS,eAAe,CAAE,SAAQ,UAAU,CAAC,CAAC,CAAC;IAAG,IAAI,CAAC,EAAE,UAAU,CAAC,CAAC,CAAC,CAAA;CAAE;AAC5G,UAAU,eAAe,CAAC,CAAC,SAAS,MAAM,CAAE,SAAQ,UAAU,CAAC,CAAC,CAAC;IAAG,YAAY,EAAE,kBAAkB,CAAC;IAAC,IAAI,CAAC,EAAE,UAAU,CAAC,CAAC,CAAC,CAAA;CAAE;AAC5H,UAAU,aAAa,CAAC,CAAC,SAAS,IAAI,CAAE,SAAQ,UAAU,CAAC,CAAC,CAAC;IAAG,YAAY,EAAE,kBAAkB,CAAC;IAAC,IAAI,CAAC,EAAE,UAAU,CAAC,CAAC,CAAC,CAAA;CAAE;AACxH,UAAU,aAAa,CAAC,CAAC,SAAS,IAAI,CAAE,SAAQ,UAAU,CAAC,CAAC,CAAC;IAAG,YAAY,EAAE,kBAAkB,CAAC;IAAC,KAAK,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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/data.js b/igv_component/node_modules/apache-arrow/data.js
new file mode 100644
index 0000000000000000000000000000000000000000..631e81770529fa5ea2eb3f4064732940f39156d4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/data.js
@@ -0,0 +1,294 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.makeData = exports.Data = exports.kUnknownNullCount = void 0;
+const vector_js_1 = require("./vector.js");
+const enum_js_1 = require("./enum.js");
+const type_js_1 = require("./type.js");
+const bit_js_1 = require("./util/bit.js");
+/** @ignore */ exports.kUnknownNullCount = -1;
+/**
+ * Data structure underlying {@link Vector}s. Use the convenience method {@link makeData}.
+ */
+class Data {
+    constructor(type, offset, length, nullCount, buffers, children = [], dictionary) {
+        this.type = type;
+        this.children = children;
+        this.dictionary = dictionary;
+        this.offset = Math.floor(Math.max(offset || 0, 0));
+        this.length = Math.floor(Math.max(length || 0, 0));
+        this._nullCount = Math.floor(Math.max(nullCount || 0, -1));
+        let buffer;
+        if (buffers instanceof Data) {
+            this.stride = buffers.stride;
+            this.values = buffers.values;
+            this.typeIds = buffers.typeIds;
+            this.nullBitmap = buffers.nullBitmap;
+            this.valueOffsets = buffers.valueOffsets;
+        }
+        else {
+            this.stride = (0, type_js_1.strideForType)(type);
+            if (buffers) {
+                (buffer = buffers[0]) && (this.valueOffsets = buffer);
+                (buffer = buffers[1]) && (this.values = buffer);
+                (buffer = buffers[2]) && (this.nullBitmap = buffer);
+                (buffer = buffers[3]) && (this.typeIds = buffer);
+            }
+        }
+        this.nullable = this._nullCount !== 0 && this.nullBitmap && this.nullBitmap.byteLength > 0;
+    }
+    get typeId() { return this.type.typeId; }
+    get ArrayType() { return this.type.ArrayType; }
+    get buffers() {
+        return [this.valueOffsets, this.values, this.nullBitmap, this.typeIds];
+    }
+    get byteLength() {
+        let byteLength = 0;
+        const { valueOffsets, values, nullBitmap, typeIds } = this;
+        valueOffsets && (byteLength += valueOffsets.byteLength);
+        values && (byteLength += values.byteLength);
+        nullBitmap && (byteLength += nullBitmap.byteLength);
+        typeIds && (byteLength += typeIds.byteLength);
+        return this.children.reduce((byteLength, child) => byteLength + child.byteLength, byteLength);
+    }
+    get nullCount() {
+        let nullCount = this._nullCount;
+        let nullBitmap;
+        if (nullCount <= exports.kUnknownNullCount && (nullBitmap = this.nullBitmap)) {
+            this._nullCount = nullCount = this.length - (0, bit_js_1.popcnt_bit_range)(nullBitmap, this.offset, this.offset + this.length);
+        }
+        return nullCount;
+    }
+    getValid(index) {
+        if (this.nullable && this.nullCount > 0) {
+            const pos = this.offset + index;
+            const val = this.nullBitmap[pos >> 3];
+            return (val & (1 << (pos % 8))) !== 0;
+        }
+        return true;
+    }
+    setValid(index, value) {
+        // Don't interact w/ nullBitmap if not nullable
+        if (!this.nullable) {
+            return value;
+        }
+        // If no null bitmap, initialize one on the fly
+        if (!this.nullBitmap || this.nullBitmap.byteLength <= (index >> 3)) {
+            const { nullBitmap } = this._changeLengthAndBackfillNullBitmap(this.length);
+            Object.assign(this, { nullBitmap, _nullCount: 0 });
+        }
+        const { nullBitmap, offset } = this;
+        const pos = (offset + index) >> 3;
+        const bit = (offset + index) % 8;
+        const val = (nullBitmap[pos] >> bit) & 1;
+        // If `val` is truthy and the current bit is 0, flip it to 1 and increment `_nullCount`.
+        // If `val` is falsey and the current bit is 1, flip it to 0 and decrement `_nullCount`.
+        value ? val === 0 && ((nullBitmap[pos] |= (1 << bit)), (this._nullCount = this.nullCount + 1))
+            : val === 1 && ((nullBitmap[pos] &= ~(1 << bit)), (this._nullCount = this.nullCount - 1));
+        return value;
+    }
+    clone(type = this.type, offset = this.offset, length = this.length, nullCount = this._nullCount, buffers = this, children = this.children) {
+        return new Data(type, offset, length, nullCount, buffers, children, this.dictionary);
+    }
+    slice(offset, length) {
+        const { stride, typeId, children } = this;
+        // +true === 1, +false === 0, so this means
+        // we keep nullCount at 0 if it's already 0,
+        // otherwise set to the invalidated flag -1
+        const nullCount = +(this._nullCount === 0) - 1;
+        const childStride = typeId === 16 /* FixedSizeList */ ? stride : 1;
+        const buffers = this._sliceBuffers(offset, length, stride, typeId);
+        return this.clone(this.type, this.offset + offset, length, nullCount, buffers, 
+        // Don't slice children if we have value offsets (the variable-width types)
+        (children.length === 0 || this.valueOffsets) ? children : this._sliceChildren(children, childStride * offset, childStride * length));
+    }
+    _changeLengthAndBackfillNullBitmap(newLength) {
+        if (this.typeId === enum_js_1.Type.Null) {
+            return this.clone(this.type, 0, newLength, 0);
+        }
+        const { length, nullCount } = this;
+        // start initialized with 0s (nulls), then fill from 0 to length with 1s (not null)
+        const bitmap = new Uint8Array(((newLength + 63) & ~63) >> 3).fill(255, 0, length >> 3);
+        // set all the bits in the last byte (up to bit `length - length % 8`) to 1 (not null)
+        bitmap[length >> 3] = (1 << (length - (length & ~7))) - 1;
+        // if we have a nullBitmap, truncate + slice and set it over the pre-filled 1s
+        if (nullCount > 0) {
+            bitmap.set((0, bit_js_1.truncateBitmap)(this.offset, length, this.nullBitmap), 0);
+        }
+        const buffers = this.buffers;
+        buffers[enum_js_1.BufferType.VALIDITY] = bitmap;
+        return this.clone(this.type, 0, newLength, nullCount + (newLength - length), buffers);
+    }
+    _sliceBuffers(offset, length, stride, typeId) {
+        let arr;
+        const { buffers } = this;
+        // If typeIds exist, slice the typeIds buffer
+        (arr = buffers[enum_js_1.BufferType.TYPE]) && (buffers[enum_js_1.BufferType.TYPE] = arr.subarray(offset, offset + length));
+        // If offsets exist, only slice the offsets buffer
+        (arr = buffers[enum_js_1.BufferType.OFFSET]) && (buffers[enum_js_1.BufferType.OFFSET] = arr.subarray(offset, offset + length + 1)) ||
+            // Otherwise if no offsets, slice the data buffer. Don't slice the data vector for Booleans, since the offset goes by bits not bytes
+            (arr = buffers[enum_js_1.BufferType.DATA]) && (buffers[enum_js_1.BufferType.DATA] = typeId === 6 ? arr : arr.subarray(stride * offset, stride * (offset + length)));
+        return buffers;
+    }
+    _sliceChildren(children, offset, length) {
+        return children.map((child) => child.slice(offset, length));
+    }
+}
+exports.Data = Data;
+Data.prototype.children = Object.freeze([]);
+const visitor_js_1 = require("./visitor.js");
+const buffer_js_1 = require("./util/buffer.js");
+class MakeDataVisitor extends visitor_js_1.Visitor {
+    visit(props) {
+        return this.getVisitFn(props['type']).call(this, props);
+    }
+    visitNull(props) {
+        const { ['type']: type, ['offset']: offset = 0, ['length']: length = 0, } = props;
+        return new Data(type, offset, length, 0);
+    }
+    visitBool(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
+        const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
+        const { ['length']: length = data.length >> 3, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitInt(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
+        const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
+        const { ['length']: length = data.length, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitFloat(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
+        const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
+        const { ['length']: length = data.length, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitUtf8(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const data = (0, buffer_js_1.toUint8Array)(props['data']);
+        const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
+        const valueOffsets = (0, buffer_js_1.toInt32Array)(props['valueOffsets']);
+        const { ['length']: length = valueOffsets.length - 1, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
+        return new Data(type, offset, length, nullCount, [valueOffsets, data, nullBitmap]);
+    }
+    visitBinary(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const data = (0, buffer_js_1.toUint8Array)(props['data']);
+        const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
+        const valueOffsets = (0, buffer_js_1.toInt32Array)(props['valueOffsets']);
+        const { ['length']: length = valueOffsets.length - 1, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
+        return new Data(type, offset, length, nullCount, [valueOffsets, data, nullBitmap]);
+    }
+    visitFixedSizeBinary(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
+        const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / (0, type_js_1.strideForType)(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitDate(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
+        const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / (0, type_js_1.strideForType)(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitTimestamp(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
+        const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / (0, type_js_1.strideForType)(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitTime(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
+        const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / (0, type_js_1.strideForType)(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitDecimal(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
+        const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / (0, type_js_1.strideForType)(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitList(props) {
+        const { ['type']: type, ['offset']: offset = 0, ['child']: child } = props;
+        const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
+        const valueOffsets = (0, buffer_js_1.toInt32Array)(props['valueOffsets']);
+        const { ['length']: length = valueOffsets.length - 1, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
+        return new Data(type, offset, length, nullCount, [valueOffsets, undefined, nullBitmap], [child]);
+    }
+    visitStruct(props) {
+        const { ['type']: type, ['offset']: offset = 0, ['children']: children = [] } = props;
+        const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
+        const { length = children.reduce((len, { length }) => Math.max(len, length), 0), nullCount = props['nullBitmap'] ? -1 : 0 } = props;
+        return new Data(type, offset, length, nullCount, [undefined, undefined, nullBitmap], children);
+    }
+    visitUnion(props) {
+        const { ['type']: type, ['offset']: offset = 0, ['children']: children = [] } = props;
+        const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
+        const typeIds = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['typeIds']);
+        const { ['length']: length = typeIds.length, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        if (type_js_1.DataType.isSparseUnion(type)) {
+            return new Data(type, offset, length, nullCount, [undefined, undefined, nullBitmap, typeIds], children);
+        }
+        const valueOffsets = (0, buffer_js_1.toInt32Array)(props['valueOffsets']);
+        return new Data(type, offset, length, nullCount, [valueOffsets, undefined, nullBitmap, typeIds], children);
+    }
+    visitDictionary(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
+        const data = (0, buffer_js_1.toArrayBufferView)(type.indices.ArrayType, props['data']);
+        const { ['dictionary']: dictionary = new vector_js_1.Vector([new MakeDataVisitor().visit({ type: type.dictionary })]) } = props;
+        const { ['length']: length = data.length, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap], [], dictionary);
+    }
+    visitInterval(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
+        const data = (0, buffer_js_1.toArrayBufferView)(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / (0, type_js_1.strideForType)(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitFixedSizeList(props) {
+        const { ['type']: type, ['offset']: offset = 0, ['child']: child = new MakeDataVisitor().visit({ type: type.valueType }) } = props;
+        const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
+        const { ['length']: length = child.length / (0, type_js_1.strideForType)(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
+        return new Data(type, offset, length, nullCount, [undefined, undefined, nullBitmap], [child]);
+    }
+    visitMap(props) {
+        const { ['type']: type, ['offset']: offset = 0, ['child']: child = new MakeDataVisitor().visit({ type: type.childType }) } = props;
+        const nullBitmap = (0, buffer_js_1.toUint8Array)(props['nullBitmap']);
+        const valueOffsets = (0, buffer_js_1.toInt32Array)(props['valueOffsets']);
+        const { ['length']: length = valueOffsets.length - 1, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [valueOffsets, undefined, nullBitmap], [child]);
+    }
+}
+function makeData(props) {
+    return new MakeDataVisitor().visit(props);
+}
+exports.makeData = makeData;
+
+//# sourceMappingURL=data.js.map
diff --git a/igv_component/node_modules/apache-arrow/data.js.map b/igv_component/node_modules/apache-arrow/data.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..d54a2471678581b7d8d06dc4a015c7cab477953a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/data.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/data.mjs b/igv_component/node_modules/apache-arrow/data.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..c5ab99f0b5104329e33b354abe95e2b763aa43a2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/data.mjs
@@ -0,0 +1,289 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Vector } from './vector.mjs';
+import { BufferType, Type } from './enum.mjs';
+import { DataType, strideForType } from './type.mjs';
+import { popcnt_bit_range, truncateBitmap } from './util/bit.mjs';
+/** @ignore */ export const kUnknownNullCount = -1;
+/**
+ * Data structure underlying {@link Vector}s. Use the convenience method {@link makeData}.
+ */
+export class Data {
+    constructor(type, offset, length, nullCount, buffers, children = [], dictionary) {
+        this.type = type;
+        this.children = children;
+        this.dictionary = dictionary;
+        this.offset = Math.floor(Math.max(offset || 0, 0));
+        this.length = Math.floor(Math.max(length || 0, 0));
+        this._nullCount = Math.floor(Math.max(nullCount || 0, -1));
+        let buffer;
+        if (buffers instanceof Data) {
+            this.stride = buffers.stride;
+            this.values = buffers.values;
+            this.typeIds = buffers.typeIds;
+            this.nullBitmap = buffers.nullBitmap;
+            this.valueOffsets = buffers.valueOffsets;
+        }
+        else {
+            this.stride = strideForType(type);
+            if (buffers) {
+                (buffer = buffers[0]) && (this.valueOffsets = buffer);
+                (buffer = buffers[1]) && (this.values = buffer);
+                (buffer = buffers[2]) && (this.nullBitmap = buffer);
+                (buffer = buffers[3]) && (this.typeIds = buffer);
+            }
+        }
+        this.nullable = this._nullCount !== 0 && this.nullBitmap && this.nullBitmap.byteLength > 0;
+    }
+    get typeId() { return this.type.typeId; }
+    get ArrayType() { return this.type.ArrayType; }
+    get buffers() {
+        return [this.valueOffsets, this.values, this.nullBitmap, this.typeIds];
+    }
+    get byteLength() {
+        let byteLength = 0;
+        const { valueOffsets, values, nullBitmap, typeIds } = this;
+        valueOffsets && (byteLength += valueOffsets.byteLength);
+        values && (byteLength += values.byteLength);
+        nullBitmap && (byteLength += nullBitmap.byteLength);
+        typeIds && (byteLength += typeIds.byteLength);
+        return this.children.reduce((byteLength, child) => byteLength + child.byteLength, byteLength);
+    }
+    get nullCount() {
+        let nullCount = this._nullCount;
+        let nullBitmap;
+        if (nullCount <= kUnknownNullCount && (nullBitmap = this.nullBitmap)) {
+            this._nullCount = nullCount = this.length - popcnt_bit_range(nullBitmap, this.offset, this.offset + this.length);
+        }
+        return nullCount;
+    }
+    getValid(index) {
+        if (this.nullable && this.nullCount > 0) {
+            const pos = this.offset + index;
+            const val = this.nullBitmap[pos >> 3];
+            return (val & (1 << (pos % 8))) !== 0;
+        }
+        return true;
+    }
+    setValid(index, value) {
+        // Don't interact w/ nullBitmap if not nullable
+        if (!this.nullable) {
+            return value;
+        }
+        // If no null bitmap, initialize one on the fly
+        if (!this.nullBitmap || this.nullBitmap.byteLength <= (index >> 3)) {
+            const { nullBitmap } = this._changeLengthAndBackfillNullBitmap(this.length);
+            Object.assign(this, { nullBitmap, _nullCount: 0 });
+        }
+        const { nullBitmap, offset } = this;
+        const pos = (offset + index) >> 3;
+        const bit = (offset + index) % 8;
+        const val = (nullBitmap[pos] >> bit) & 1;
+        // If `val` is truthy and the current bit is 0, flip it to 1 and increment `_nullCount`.
+        // If `val` is falsey and the current bit is 1, flip it to 0 and decrement `_nullCount`.
+        value ? val === 0 && ((nullBitmap[pos] |= (1 << bit)), (this._nullCount = this.nullCount + 1))
+            : val === 1 && ((nullBitmap[pos] &= ~(1 << bit)), (this._nullCount = this.nullCount - 1));
+        return value;
+    }
+    clone(type = this.type, offset = this.offset, length = this.length, nullCount = this._nullCount, buffers = this, children = this.children) {
+        return new Data(type, offset, length, nullCount, buffers, children, this.dictionary);
+    }
+    slice(offset, length) {
+        const { stride, typeId, children } = this;
+        // +true === 1, +false === 0, so this means
+        // we keep nullCount at 0 if it's already 0,
+        // otherwise set to the invalidated flag -1
+        const nullCount = +(this._nullCount === 0) - 1;
+        const childStride = typeId === 16 /* FixedSizeList */ ? stride : 1;
+        const buffers = this._sliceBuffers(offset, length, stride, typeId);
+        return this.clone(this.type, this.offset + offset, length, nullCount, buffers, 
+        // Don't slice children if we have value offsets (the variable-width types)
+        (children.length === 0 || this.valueOffsets) ? children : this._sliceChildren(children, childStride * offset, childStride * length));
+    }
+    _changeLengthAndBackfillNullBitmap(newLength) {
+        if (this.typeId === Type.Null) {
+            return this.clone(this.type, 0, newLength, 0);
+        }
+        const { length, nullCount } = this;
+        // start initialized with 0s (nulls), then fill from 0 to length with 1s (not null)
+        const bitmap = new Uint8Array(((newLength + 63) & ~63) >> 3).fill(255, 0, length >> 3);
+        // set all the bits in the last byte (up to bit `length - length % 8`) to 1 (not null)
+        bitmap[length >> 3] = (1 << (length - (length & ~7))) - 1;
+        // if we have a nullBitmap, truncate + slice and set it over the pre-filled 1s
+        if (nullCount > 0) {
+            bitmap.set(truncateBitmap(this.offset, length, this.nullBitmap), 0);
+        }
+        const buffers = this.buffers;
+        buffers[BufferType.VALIDITY] = bitmap;
+        return this.clone(this.type, 0, newLength, nullCount + (newLength - length), buffers);
+    }
+    _sliceBuffers(offset, length, stride, typeId) {
+        let arr;
+        const { buffers } = this;
+        // If typeIds exist, slice the typeIds buffer
+        (arr = buffers[BufferType.TYPE]) && (buffers[BufferType.TYPE] = arr.subarray(offset, offset + length));
+        // If offsets exist, only slice the offsets buffer
+        (arr = buffers[BufferType.OFFSET]) && (buffers[BufferType.OFFSET] = arr.subarray(offset, offset + length + 1)) ||
+            // Otherwise if no offsets, slice the data buffer. Don't slice the data vector for Booleans, since the offset goes by bits not bytes
+            (arr = buffers[BufferType.DATA]) && (buffers[BufferType.DATA] = typeId === 6 ? arr : arr.subarray(stride * offset, stride * (offset + length)));
+        return buffers;
+    }
+    _sliceChildren(children, offset, length) {
+        return children.map((child) => child.slice(offset, length));
+    }
+}
+Data.prototype.children = Object.freeze([]);
+import { Visitor } from './visitor.mjs';
+import { toArrayBufferView, toInt32Array, toUint8Array } from './util/buffer.mjs';
+class MakeDataVisitor extends Visitor {
+    visit(props) {
+        return this.getVisitFn(props['type']).call(this, props);
+    }
+    visitNull(props) {
+        const { ['type']: type, ['offset']: offset = 0, ['length']: length = 0, } = props;
+        return new Data(type, offset, length, 0);
+    }
+    visitBool(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length >> 3, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitInt(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitFloat(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitUtf8(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const data = toUint8Array(props['data']);
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const valueOffsets = toInt32Array(props['valueOffsets']);
+        const { ['length']: length = valueOffsets.length - 1, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
+        return new Data(type, offset, length, nullCount, [valueOffsets, data, nullBitmap]);
+    }
+    visitBinary(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const data = toUint8Array(props['data']);
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const valueOffsets = toInt32Array(props['valueOffsets']);
+        const { ['length']: length = valueOffsets.length - 1, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
+        return new Data(type, offset, length, nullCount, [valueOffsets, data, nullBitmap]);
+    }
+    visitFixedSizeBinary(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / strideForType(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitDate(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / strideForType(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitTimestamp(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / strideForType(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitTime(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / strideForType(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitDecimal(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / strideForType(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitList(props) {
+        const { ['type']: type, ['offset']: offset = 0, ['child']: child } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const valueOffsets = toInt32Array(props['valueOffsets']);
+        const { ['length']: length = valueOffsets.length - 1, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
+        return new Data(type, offset, length, nullCount, [valueOffsets, undefined, nullBitmap], [child]);
+    }
+    visitStruct(props) {
+        const { ['type']: type, ['offset']: offset = 0, ['children']: children = [] } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const { length = children.reduce((len, { length }) => Math.max(len, length), 0), nullCount = props['nullBitmap'] ? -1 : 0 } = props;
+        return new Data(type, offset, length, nullCount, [undefined, undefined, nullBitmap], children);
+    }
+    visitUnion(props) {
+        const { ['type']: type, ['offset']: offset = 0, ['children']: children = [] } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const typeIds = toArrayBufferView(type.ArrayType, props['typeIds']);
+        const { ['length']: length = typeIds.length, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        if (DataType.isSparseUnion(type)) {
+            return new Data(type, offset, length, nullCount, [undefined, undefined, nullBitmap, typeIds], children);
+        }
+        const valueOffsets = toInt32Array(props['valueOffsets']);
+        return new Data(type, offset, length, nullCount, [valueOffsets, undefined, nullBitmap, typeIds], children);
+    }
+    visitDictionary(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.indices.ArrayType, props['data']);
+        const { ['dictionary']: dictionary = new Vector([new MakeDataVisitor().visit({ type: type.dictionary })]) } = props;
+        const { ['length']: length = data.length, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap], [], dictionary);
+    }
+    visitInterval(props) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / strideForType(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    visitFixedSizeList(props) {
+        const { ['type']: type, ['offset']: offset = 0, ['child']: child = new MakeDataVisitor().visit({ type: type.valueType }) } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const { ['length']: length = child.length / strideForType(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
+        return new Data(type, offset, length, nullCount, [undefined, undefined, nullBitmap], [child]);
+    }
+    visitMap(props) {
+        const { ['type']: type, ['offset']: offset = 0, ['child']: child = new MakeDataVisitor().visit({ type: type.childType }) } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const valueOffsets = toInt32Array(props['valueOffsets']);
+        const { ['length']: length = valueOffsets.length - 1, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [valueOffsets, undefined, nullBitmap], [child]);
+    }
+}
+export function makeData(props) {
+    return new MakeDataVisitor().visit(props);
+}
+
+//# sourceMappingURL=data.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/data.mjs.map b/igv_component/node_modules/apache-arrow/data.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..51e2e5ccc39f3ab4cb009b2883bfcd143a4ca419
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/data.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/enum.d.ts b/igv_component/node_modules/apache-arrow/enum.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..dc761b8c6941075863da8a3ddf470faed716be81
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/enum.d.ts
@@ -0,0 +1,182 @@
+/**
+ * Logical types, vector layouts, and schemas
+ *
+ * @enum {number}
+ */
+export declare enum MetadataVersion {
+    /**
+     * 0.1.0 (October 2016).
+     */
+    V1 = 0,
+    /**
+     * 0.2.0 (February 2017). Non-backwards compatible with V1.
+     */
+    V2 = 1,
+    /**
+     * 0.3.0 -> 0.7.1 (May - December 2017). Non-backwards compatible with V2.
+     */
+    V3 = 2,
+    /**
+     * >= 0.8.0 (December 2017). Non-backwards compatible with V3.
+     */
+    V4 = 3,
+    /**
+     * >= 1.0.0 (July 2020. Backwards compatible with V4 (V5 readers can read V4
+     * metadata and IPC messages). Implementations are recommended to provide a
+     * V4 compatibility mode with V5 format changes disabled.
+     *
+     * Incompatible changes between V4 and V5:
+     * - Union buffer layout has changed. In V5, Unions don't have a validity
+     *   bitmap buffer.
+     */
+    V5 = 4
+}
+/**
+ * @enum {number}
+ */
+export declare enum UnionMode {
+    Sparse = 0,
+    Dense = 1
+}
+/**
+ * @enum {number}
+ */
+export declare enum Precision {
+    HALF = 0,
+    SINGLE = 1,
+    DOUBLE = 2
+}
+/**
+ * @enum {number}
+ */
+export declare enum DateUnit {
+    DAY = 0,
+    MILLISECOND = 1
+}
+/**
+ * @enum {number}
+ */
+export declare enum TimeUnit {
+    SECOND = 0,
+    MILLISECOND = 1,
+    MICROSECOND = 2,
+    NANOSECOND = 3
+}
+/**
+ * @enum {number}
+ */
+export declare enum IntervalUnit {
+    YEAR_MONTH = 0,
+    DAY_TIME = 1,
+    MONTH_DAY_NANO = 2
+}
+/**
+ * ----------------------------------------------------------------------
+ * The root Message type
+ * This union enables us to easily send different message types without
+ * redundant storage, and in the future we can easily add new message types.
+ *
+ * Arrow implementations do not need to implement all of the message types,
+ * which may include experimental metadata types. For maximum compatibility,
+ * it is best to send data using RecordBatch
+ *
+ * @enum {number}
+ */
+export declare enum MessageHeader {
+    NONE = 0,
+    Schema = 1,
+    DictionaryBatch = 2,
+    RecordBatch = 3,
+    Tensor = 4,
+    SparseTensor = 5
+}
+/**
+ * Main data type enumeration.
+ *
+ * Data types in this library are all *logical*. They can be expressed as
+ * either a primitive physical type (bytes or bits of some fixed size), a
+ * nested type consisting of other data types, or another data type (e.g. a
+ * timestamp encoded as an int64).
+ *
+ * **Note**: Only enum values 0-17 (NONE through Map) are written to an Arrow
+ * IPC payload.
+ *
+ * The rest of the values are specified here so TypeScript can narrow the type
+ * signatures further beyond the base Arrow Types. The Arrow DataTypes include
+ * metadata like `bitWidth` that impact the type signatures of the values we
+ * accept and return.
+ *
+ * For example, the `Int8Vector` reads 1-byte numbers from an `Int8Array`, an
+ * `Int32Vector` reads a 4-byte number from an `Int32Array`, and an `Int64Vector`
+ * reads a pair of 4-byte lo, hi 32-bit integers as a zero-copy slice from the
+ * underlying `Int32Array`.
+ *
+ * Library consumers benefit by knowing the narrowest type, since we can ensure
+ * the types across all public methods are propagated, and never bail to `any`.
+ * These values are _never_ used at runtime, and they will _never_ be written
+ * to the flatbuffers metadata of serialized Arrow IPC payloads.
+ */
+export declare enum Type {
+    NONE = 0,
+    Null = 1,
+    Int = 2,
+    Float = 3,
+    Binary = 4,
+    Utf8 = 5,
+    Bool = 6,
+    Decimal = 7,
+    Date = 8,
+    Time = 9,
+    Timestamp = 10,
+    Interval = 11,
+    List = 12,
+    Struct = 13,
+    Union = 14,
+    FixedSizeBinary = 15,
+    FixedSizeList = 16,
+    Map = 17,
+    Dictionary = -1,
+    Int8 = -2,
+    Int16 = -3,
+    Int32 = -4,
+    Int64 = -5,
+    Uint8 = -6,
+    Uint16 = -7,
+    Uint32 = -8,
+    Uint64 = -9,
+    Float16 = -10,
+    Float32 = -11,
+    Float64 = -12,
+    DateDay = -13,
+    DateMillisecond = -14,
+    TimestampSecond = -15,
+    TimestampMillisecond = -16,
+    TimestampMicrosecond = -17,
+    TimestampNanosecond = -18,
+    TimeSecond = -19,
+    TimeMillisecond = -20,
+    TimeMicrosecond = -21,
+    TimeNanosecond = -22,
+    DenseUnion = -23,
+    SparseUnion = -24,
+    IntervalDayTime = -25,
+    IntervalYearMonth = -26
+}
+export declare enum BufferType {
+    /**
+     * used in List type, Dense Union and variable length primitive types (String, Binary)
+     */
+    OFFSET = 0,
+    /**
+     * actual data, either wixed width primitive types in slots or variable width delimited by an OFFSET vector
+     */
+    DATA = 1,
+    /**
+     * Bit vector indicating if each value is null
+     */
+    VALIDITY = 2,
+    /**
+     * Type vector used in Union type
+     */
+    TYPE = 3
+}
diff --git a/igv_component/node_modules/apache-arrow/enum.d.ts.map b/igv_component/node_modules/apache-arrow/enum.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..342d31a2f1383f47082e697d3106c589a88200a5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/enum.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["enum.ts"],"names":[],"mappings":"AA4BA;;;;GAIG;AACH,oBAAY,eAAe;IACvB;;OAEG;IACH,EAAE,IAAI;IAEN;;OAEG;IACH,EAAE,IAAI;IAEN;;OAEG;IACH,EAAE,IAAI;IAEN;;OAEG;IACH,EAAE,IAAI;IAEN;;;;;;;;OAQG;IACH,EAAE,IAAI;CACT;AAED;;GAEG;AACH,oBAAY,SAAS;IACjB,MAAM,IAAI;IACV,KAAK,IAAI;CACZ;AAED;;GAEG;AACH,oBAAY,SAAS;IACjB,IAAI,IAAI;IACR,MAAM,IAAI;IACV,MAAM,IAAI;CACb;AAED;;GAEG;AACH,oBAAY,QAAQ;IAChB,GAAG,IAAI;IACP,WAAW,IAAI;CAClB;AAED;;GAEG;AACH,oBAAY,QAAQ;IAChB,MAAM,IAAI;IACV,WAAW,IAAI;IACf,WAAW,IAAI;IACf,UAAU,IAAI;CACjB;AAED;;GAEG;AACH,oBAAY,YAAY;IACpB,UAAU,IAAI;IACd,QAAQ,IAAI;IACZ,cAAc,IAAI;CACrB;AAED;;;;;;;;;;;GAWG;AACH,oBAAY,aAAa;IACrB,IAAI,IAAI;IACR,MAAM,IAAI;IACV,eAAe,IAAI;IACnB,WAAW,IAAI;IACf,MAAM,IAAI;IACV,YAAY,IAAI;CACnB;AAED;;;;;;;;;;;;;;;;;;;;;;;;;GAyBG;AACH,oBAAY,IAAI;IACZ,IAAI,IAAI;IACR,IAAI,IAAI;IACR,GAAG,IAAI;IACP,KAAK,IAAI;IACT,MAAM,IAAI;IACV,IAAI,IAAI;IACR,IAAI,IAAI;IACR,OAAO,IAAI;IACX,IAAI,IAAI;IACR,IAAI,IAAI;IACR,SAAS,KAAK;IACd,QAAQ,KAAK;IACb,IAAI,KAAK;IACT,MAAM,KAAK;IACX,KAAK,KAAK;IACV,eAAe,KAAK;IACpB,aAAa,KAAK;IAClB,GAAG,KAAK;IAER,UAAU,KAAK;IACf,IAAI,KAAK;IACT,KAAK,KAAK;IACV,KAAK,KAAK;IACV,KAAK,KAAK;IACV,KAAK,KAAK;IACV,MAAM,KAAK;IACX,MAAM,KAAK;IACX,MAAM,KAAK;IACX,OAAO,MAAM;IACb,OAAO,MAAM;IACb,OAAO,MAAM;IACb,OAAO,MAAM;IACb,eAAe,MAAM;IACrB,eAAe,MAAM;IACrB,oBAAoB,MAAM;IAC1B,oBAAoB,MAAM;IAC1B,mBAAmB,MAAM;IACzB,UAAU,MAAM;IAChB,eAAe,MAAM;IACrB,eAAe,MAAM;IACrB,cAAc,MAAM;IACpB,UAAU,MAAM;IAChB,WAAW,MAAM;IACjB,eAAe,MAAM;IACrB,iBAAiB,MAAM;CAC1B;AAED,oBAAY,UAAU;IAClB;;OAEG;IACH,MAAM,IAAI;IAEV;;OAEG;IACH,IAAI,IAAI;IAER;;OAEG;IACH,QAAQ,IAAI;IAEZ;;OAEG;IACH,IAAI,IAAI;CACX","file":"enum.d.ts","sourceRoot":"src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/enum.js b/igv_component/node_modules/apache-arrow/enum.js
new file mode 100644
index 0000000000000000000000000000000000000000..30860732e589dd22e942458db968f264e9d1552f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/enum.js
@@ -0,0 +1,222 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.BufferType = exports.Type = exports.MessageHeader = exports.IntervalUnit = exports.TimeUnit = exports.DateUnit = exports.Precision = exports.UnionMode = exports.MetadataVersion = void 0;
+////
+//
+// A few enums copied from `fb/Schema.ts` and `fb/Message.ts` because Webpack
+// v4 doesn't seem to be able to tree-shake the rest of those exports.
+//
+// We will have to keep these enums in sync when we re-generate the flatbuffers
+// code from the shchemas. See js/DEVELOP.md for info on how to run flatbuffers
+// code generation.
+//
+////
+/**
+ * Logical types, vector layouts, and schemas
+ *
+ * @enum {number}
+ */
+var MetadataVersion;
+(function (MetadataVersion) {
+    /**
+     * 0.1.0 (October 2016).
+     */
+    MetadataVersion[MetadataVersion["V1"] = 0] = "V1";
+    /**
+     * 0.2.0 (February 2017). Non-backwards compatible with V1.
+     */
+    MetadataVersion[MetadataVersion["V2"] = 1] = "V2";
+    /**
+     * 0.3.0 -> 0.7.1 (May - December 2017). Non-backwards compatible with V2.
+     */
+    MetadataVersion[MetadataVersion["V3"] = 2] = "V3";
+    /**
+     * >= 0.8.0 (December 2017). Non-backwards compatible with V3.
+     */
+    MetadataVersion[MetadataVersion["V4"] = 3] = "V4";
+    /**
+     * >= 1.0.0 (July 2020. Backwards compatible with V4 (V5 readers can read V4
+     * metadata and IPC messages). Implementations are recommended to provide a
+     * V4 compatibility mode with V5 format changes disabled.
+     *
+     * Incompatible changes between V4 and V5:
+     * - Union buffer layout has changed. In V5, Unions don't have a validity
+     *   bitmap buffer.
+     */
+    MetadataVersion[MetadataVersion["V5"] = 4] = "V5";
+})(MetadataVersion = exports.MetadataVersion || (exports.MetadataVersion = {}));
+/**
+ * @enum {number}
+ */
+var UnionMode;
+(function (UnionMode) {
+    UnionMode[UnionMode["Sparse"] = 0] = "Sparse";
+    UnionMode[UnionMode["Dense"] = 1] = "Dense";
+})(UnionMode = exports.UnionMode || (exports.UnionMode = {}));
+/**
+ * @enum {number}
+ */
+var Precision;
+(function (Precision) {
+    Precision[Precision["HALF"] = 0] = "HALF";
+    Precision[Precision["SINGLE"] = 1] = "SINGLE";
+    Precision[Precision["DOUBLE"] = 2] = "DOUBLE";
+})(Precision = exports.Precision || (exports.Precision = {}));
+/**
+ * @enum {number}
+ */
+var DateUnit;
+(function (DateUnit) {
+    DateUnit[DateUnit["DAY"] = 0] = "DAY";
+    DateUnit[DateUnit["MILLISECOND"] = 1] = "MILLISECOND";
+})(DateUnit = exports.DateUnit || (exports.DateUnit = {}));
+/**
+ * @enum {number}
+ */
+var TimeUnit;
+(function (TimeUnit) {
+    TimeUnit[TimeUnit["SECOND"] = 0] = "SECOND";
+    TimeUnit[TimeUnit["MILLISECOND"] = 1] = "MILLISECOND";
+    TimeUnit[TimeUnit["MICROSECOND"] = 2] = "MICROSECOND";
+    TimeUnit[TimeUnit["NANOSECOND"] = 3] = "NANOSECOND";
+})(TimeUnit = exports.TimeUnit || (exports.TimeUnit = {}));
+/**
+ * @enum {number}
+ */
+var IntervalUnit;
+(function (IntervalUnit) {
+    IntervalUnit[IntervalUnit["YEAR_MONTH"] = 0] = "YEAR_MONTH";
+    IntervalUnit[IntervalUnit["DAY_TIME"] = 1] = "DAY_TIME";
+    IntervalUnit[IntervalUnit["MONTH_DAY_NANO"] = 2] = "MONTH_DAY_NANO";
+})(IntervalUnit = exports.IntervalUnit || (exports.IntervalUnit = {}));
+/**
+ * ----------------------------------------------------------------------
+ * The root Message type
+ * This union enables us to easily send different message types without
+ * redundant storage, and in the future we can easily add new message types.
+ *
+ * Arrow implementations do not need to implement all of the message types,
+ * which may include experimental metadata types. For maximum compatibility,
+ * it is best to send data using RecordBatch
+ *
+ * @enum {number}
+ */
+var MessageHeader;
+(function (MessageHeader) {
+    MessageHeader[MessageHeader["NONE"] = 0] = "NONE";
+    MessageHeader[MessageHeader["Schema"] = 1] = "Schema";
+    MessageHeader[MessageHeader["DictionaryBatch"] = 2] = "DictionaryBatch";
+    MessageHeader[MessageHeader["RecordBatch"] = 3] = "RecordBatch";
+    MessageHeader[MessageHeader["Tensor"] = 4] = "Tensor";
+    MessageHeader[MessageHeader["SparseTensor"] = 5] = "SparseTensor";
+})(MessageHeader = exports.MessageHeader || (exports.MessageHeader = {}));
+/**
+ * Main data type enumeration.
+ *
+ * Data types in this library are all *logical*. They can be expressed as
+ * either a primitive physical type (bytes or bits of some fixed size), a
+ * nested type consisting of other data types, or another data type (e.g. a
+ * timestamp encoded as an int64).
+ *
+ * **Note**: Only enum values 0-17 (NONE through Map) are written to an Arrow
+ * IPC payload.
+ *
+ * The rest of the values are specified here so TypeScript can narrow the type
+ * signatures further beyond the base Arrow Types. The Arrow DataTypes include
+ * metadata like `bitWidth` that impact the type signatures of the values we
+ * accept and return.
+ *
+ * For example, the `Int8Vector` reads 1-byte numbers from an `Int8Array`, an
+ * `Int32Vector` reads a 4-byte number from an `Int32Array`, and an `Int64Vector`
+ * reads a pair of 4-byte lo, hi 32-bit integers as a zero-copy slice from the
+ * underlying `Int32Array`.
+ *
+ * Library consumers benefit by knowing the narrowest type, since we can ensure
+ * the types across all public methods are propagated, and never bail to `any`.
+ * These values are _never_ used at runtime, and they will _never_ be written
+ * to the flatbuffers metadata of serialized Arrow IPC payloads.
+ */
+var Type;
+(function (Type) {
+    Type[Type["NONE"] = 0] = "NONE";
+    Type[Type["Null"] = 1] = "Null";
+    Type[Type["Int"] = 2] = "Int";
+    Type[Type["Float"] = 3] = "Float";
+    Type[Type["Binary"] = 4] = "Binary";
+    Type[Type["Utf8"] = 5] = "Utf8";
+    Type[Type["Bool"] = 6] = "Bool";
+    Type[Type["Decimal"] = 7] = "Decimal";
+    Type[Type["Date"] = 8] = "Date";
+    Type[Type["Time"] = 9] = "Time";
+    Type[Type["Timestamp"] = 10] = "Timestamp";
+    Type[Type["Interval"] = 11] = "Interval";
+    Type[Type["List"] = 12] = "List";
+    Type[Type["Struct"] = 13] = "Struct";
+    Type[Type["Union"] = 14] = "Union";
+    Type[Type["FixedSizeBinary"] = 15] = "FixedSizeBinary";
+    Type[Type["FixedSizeList"] = 16] = "FixedSizeList";
+    Type[Type["Map"] = 17] = "Map";
+    Type[Type["Dictionary"] = -1] = "Dictionary";
+    Type[Type["Int8"] = -2] = "Int8";
+    Type[Type["Int16"] = -3] = "Int16";
+    Type[Type["Int32"] = -4] = "Int32";
+    Type[Type["Int64"] = -5] = "Int64";
+    Type[Type["Uint8"] = -6] = "Uint8";
+    Type[Type["Uint16"] = -7] = "Uint16";
+    Type[Type["Uint32"] = -8] = "Uint32";
+    Type[Type["Uint64"] = -9] = "Uint64";
+    Type[Type["Float16"] = -10] = "Float16";
+    Type[Type["Float32"] = -11] = "Float32";
+    Type[Type["Float64"] = -12] = "Float64";
+    Type[Type["DateDay"] = -13] = "DateDay";
+    Type[Type["DateMillisecond"] = -14] = "DateMillisecond";
+    Type[Type["TimestampSecond"] = -15] = "TimestampSecond";
+    Type[Type["TimestampMillisecond"] = -16] = "TimestampMillisecond";
+    Type[Type["TimestampMicrosecond"] = -17] = "TimestampMicrosecond";
+    Type[Type["TimestampNanosecond"] = -18] = "TimestampNanosecond";
+    Type[Type["TimeSecond"] = -19] = "TimeSecond";
+    Type[Type["TimeMillisecond"] = -20] = "TimeMillisecond";
+    Type[Type["TimeMicrosecond"] = -21] = "TimeMicrosecond";
+    Type[Type["TimeNanosecond"] = -22] = "TimeNanosecond";
+    Type[Type["DenseUnion"] = -23] = "DenseUnion";
+    Type[Type["SparseUnion"] = -24] = "SparseUnion";
+    Type[Type["IntervalDayTime"] = -25] = "IntervalDayTime";
+    Type[Type["IntervalYearMonth"] = -26] = "IntervalYearMonth";
+})(Type = exports.Type || (exports.Type = {}));
+var BufferType;
+(function (BufferType) {
+    /**
+     * used in List type, Dense Union and variable length primitive types (String, Binary)
+     */
+    BufferType[BufferType["OFFSET"] = 0] = "OFFSET";
+    /**
+     * actual data, either wixed width primitive types in slots or variable width delimited by an OFFSET vector
+     */
+    BufferType[BufferType["DATA"] = 1] = "DATA";
+    /**
+     * Bit vector indicating if each value is null
+     */
+    BufferType[BufferType["VALIDITY"] = 2] = "VALIDITY";
+    /**
+     * Type vector used in Union type
+     */
+    BufferType[BufferType["TYPE"] = 3] = "TYPE";
+})(BufferType = exports.BufferType || (exports.BufferType = {}));
+
+//# sourceMappingURL=enum.js.map
diff --git a/igv_component/node_modules/apache-arrow/enum.js.map b/igv_component/node_modules/apache-arrow/enum.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..9592f13041c1dd4e20b5cfe997ff95a6e346b1c6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/enum.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["enum.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,IAAI;AACJ,EAAE;AACF,6EAA6E;AAC7E,sEAAsE;AACtE,EAAE;AACF,+EAA+E;AAC/E,+EAA+E;AAC/E,mBAAmB;AACnB,EAAE;AACF,IAAI;AAEJ;;;;GAIG;AACH,IAAY,eA+BX;AA/BD,WAAY,eAAe;IACvB;;OAEG;IACH,iDAAM,CAAA;IAEN;;OAEG;IACH,iDAAM,CAAA;IAEN;;OAEG;IACH,iDAAM,CAAA;IAEN;;OAEG;IACH,iDAAM,CAAA;IAEN;;;;;;;;OAQG;IACH,iDAAM,CAAA;AACV,CAAC,EA/BW,eAAe,GAAf,uBAAe,KAAf,uBAAe,QA+B1B;AAED;;GAEG;AACH,IAAY,SAGX;AAHD,WAAY,SAAS;IACjB,6CAAU,CAAA;IACV,2CAAS,CAAA;AACb,CAAC,EAHW,SAAS,GAAT,iBAAS,KAAT,iBAAS,QAGpB;AAED;;GAEG;AACH,IAAY,SAIX;AAJD,WAAY,SAAS;IACjB,yCAAQ,CAAA;IACR,6CAAU,CAAA;IACV,6CAAU,CAAA;AACd,CAAC,EAJW,SAAS,GAAT,iBAAS,KAAT,iBAAS,QAIpB;AAED;;GAEG;AACH,IAAY,QAGX;AAHD,WAAY,QAAQ;IAChB,qCAAO,CAAA;IACP,qDAAe,CAAA;AACnB,CAAC,EAHW,QAAQ,GAAR,gBAAQ,KAAR,gBAAQ,QAGnB;AAED;;GAEG;AACH,IAAY,QAKX;AALD,WAAY,QAAQ;IAChB,2CAAU,CAAA;IACV,qDAAe,CAAA;IACf,qDAAe,CAAA;IACf,mDAAc,CAAA;AAClB,CAAC,EALW,QAAQ,GAAR,gBAAQ,KAAR,gBAAQ,QAKnB;AAED;;GAEG;AACH,IAAY,YAIX;AAJD,WAAY,YAAY;IACpB,2DAAc,CAAA;IACd,uDAAY,CAAA;IACZ,mEAAkB,CAAA;AACtB,CAAC,EAJW,YAAY,GAAZ,oBAAY,KAAZ,oBAAY,QAIvB;AAED;;;;;;;;;;;GAWG;AACH,IAAY,aAOX;AAPD,WAAY,aAAa;IACrB,iDAAQ,CAAA;IACR,qDAAU,CAAA;IACV,uEAAmB,CAAA;IACnB,+DAAe,CAAA;IACf,qDAAU,CAAA;IACV,iEAAgB,CAAA;AACpB,CAAC,EAPW,aAAa,GAAb,qBAAa,KAAb,qBAAa,QAOxB;AAED;;;;;;;;;;;;;;;;;;;;;;;;;GAyBG;AACH,IAAY,IA8CX;AA9CD,WAAY,IAAI;IACZ,+BAAQ,CAAA;IACR,+BAAQ,CAAA;IACR,6BAAO,CAAA;IACP,iCAAS,CAAA;IACT,mCAAU,CAAA;IACV,+BAAQ,CAAA;IACR,+BAAQ,CAAA;IACR,qCAAW,CAAA;IACX,+BAAQ,CAAA;IACR,+BAAQ,CAAA;IACR,0CAAc,CAAA;IACd,wCAAa,CAAA;IACb,gCAAS,CAAA;IACT,oCAAW,CAAA;IACX,kCAAU,CAAA;IACV,sDAAoB,CAAA;IACpB,kDAAkB,CAAA;IAClB,8BAAQ,CAAA;IAER,4CAAe,CAAA;IACf,gCAAS,CAAA;IACT,kCAAU,CAAA;IACV,kCAAU,CAAA;IACV,kCAAU,CAAA;IACV,kCAAU,CAAA;IACV,oCAAW,CAAA;IACX,oCAAW,CAAA;IACX,oCAAW,CAAA;IACX,uCAAa,CAAA;IACb,uCAAa,CAAA;IACb,uCAAa,CAAA;IACb,uCAAa,CAAA;IACb,uDAAqB,CAAA;IACrB,uDAAqB,CAAA;IACrB,iEAA0B,CAAA;IAC1B,iEAA0B,CAAA;IAC1B,+DAAyB,CAAA;IACzB,6CAAgB,CAAA;IAChB,uDAAqB,CAAA;IACrB,uDAAqB,CAAA;IACrB,qDAAoB,CAAA;IACpB,6CAAgB,CAAA;IAChB,+CAAiB,CAAA;IACjB,uDAAqB,CAAA;IACrB,2DAAuB,CAAA;AAC3B,CAAC,EA9CW,IAAI,GAAJ,YAAI,KAAJ,YAAI,QA8Cf;AAED,IAAY,UAoBX;AApBD,WAAY,UAAU;IAClB;;OAEG;IACH,+CAAU,CAAA;IAEV;;OAEG;IACH,2CAAQ,CAAA;IAER;;OAEG;IACH,mDAAY,CAAA;IAEZ;;OAEG;IACH,2CAAQ,CAAA;AACZ,CAAC,EApBW,UAAU,GAAV,kBAAU,KAAV,kBAAU,QAoBrB","file":"enum.js","sourceRoot":"src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/enum.mjs b/igv_component/node_modules/apache-arrow/enum.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..dfb437c95857f01e8f183101d59757e37de54255
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/enum.mjs
@@ -0,0 +1,219 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+////
+//
+// A few enums copied from `fb/Schema.ts` and `fb/Message.ts` because Webpack
+// v4 doesn't seem to be able to tree-shake the rest of those exports.
+//
+// We will have to keep these enums in sync when we re-generate the flatbuffers
+// code from the shchemas. See js/DEVELOP.md for info on how to run flatbuffers
+// code generation.
+//
+////
+/**
+ * Logical types, vector layouts, and schemas
+ *
+ * @enum {number}
+ */
+export var MetadataVersion;
+(function (MetadataVersion) {
+    /**
+     * 0.1.0 (October 2016).
+     */
+    MetadataVersion[MetadataVersion["V1"] = 0] = "V1";
+    /**
+     * 0.2.0 (February 2017). Non-backwards compatible with V1.
+     */
+    MetadataVersion[MetadataVersion["V2"] = 1] = "V2";
+    /**
+     * 0.3.0 -> 0.7.1 (May - December 2017). Non-backwards compatible with V2.
+     */
+    MetadataVersion[MetadataVersion["V3"] = 2] = "V3";
+    /**
+     * >= 0.8.0 (December 2017). Non-backwards compatible with V3.
+     */
+    MetadataVersion[MetadataVersion["V4"] = 3] = "V4";
+    /**
+     * >= 1.0.0 (July 2020. Backwards compatible with V4 (V5 readers can read V4
+     * metadata and IPC messages). Implementations are recommended to provide a
+     * V4 compatibility mode with V5 format changes disabled.
+     *
+     * Incompatible changes between V4 and V5:
+     * - Union buffer layout has changed. In V5, Unions don't have a validity
+     *   bitmap buffer.
+     */
+    MetadataVersion[MetadataVersion["V5"] = 4] = "V5";
+})(MetadataVersion || (MetadataVersion = {}));
+/**
+ * @enum {number}
+ */
+export var UnionMode;
+(function (UnionMode) {
+    UnionMode[UnionMode["Sparse"] = 0] = "Sparse";
+    UnionMode[UnionMode["Dense"] = 1] = "Dense";
+})(UnionMode || (UnionMode = {}));
+/**
+ * @enum {number}
+ */
+export var Precision;
+(function (Precision) {
+    Precision[Precision["HALF"] = 0] = "HALF";
+    Precision[Precision["SINGLE"] = 1] = "SINGLE";
+    Precision[Precision["DOUBLE"] = 2] = "DOUBLE";
+})(Precision || (Precision = {}));
+/**
+ * @enum {number}
+ */
+export var DateUnit;
+(function (DateUnit) {
+    DateUnit[DateUnit["DAY"] = 0] = "DAY";
+    DateUnit[DateUnit["MILLISECOND"] = 1] = "MILLISECOND";
+})(DateUnit || (DateUnit = {}));
+/**
+ * @enum {number}
+ */
+export var TimeUnit;
+(function (TimeUnit) {
+    TimeUnit[TimeUnit["SECOND"] = 0] = "SECOND";
+    TimeUnit[TimeUnit["MILLISECOND"] = 1] = "MILLISECOND";
+    TimeUnit[TimeUnit["MICROSECOND"] = 2] = "MICROSECOND";
+    TimeUnit[TimeUnit["NANOSECOND"] = 3] = "NANOSECOND";
+})(TimeUnit || (TimeUnit = {}));
+/**
+ * @enum {number}
+ */
+export var IntervalUnit;
+(function (IntervalUnit) {
+    IntervalUnit[IntervalUnit["YEAR_MONTH"] = 0] = "YEAR_MONTH";
+    IntervalUnit[IntervalUnit["DAY_TIME"] = 1] = "DAY_TIME";
+    IntervalUnit[IntervalUnit["MONTH_DAY_NANO"] = 2] = "MONTH_DAY_NANO";
+})(IntervalUnit || (IntervalUnit = {}));
+/**
+ * ----------------------------------------------------------------------
+ * The root Message type
+ * This union enables us to easily send different message types without
+ * redundant storage, and in the future we can easily add new message types.
+ *
+ * Arrow implementations do not need to implement all of the message types,
+ * which may include experimental metadata types. For maximum compatibility,
+ * it is best to send data using RecordBatch
+ *
+ * @enum {number}
+ */
+export var MessageHeader;
+(function (MessageHeader) {
+    MessageHeader[MessageHeader["NONE"] = 0] = "NONE";
+    MessageHeader[MessageHeader["Schema"] = 1] = "Schema";
+    MessageHeader[MessageHeader["DictionaryBatch"] = 2] = "DictionaryBatch";
+    MessageHeader[MessageHeader["RecordBatch"] = 3] = "RecordBatch";
+    MessageHeader[MessageHeader["Tensor"] = 4] = "Tensor";
+    MessageHeader[MessageHeader["SparseTensor"] = 5] = "SparseTensor";
+})(MessageHeader || (MessageHeader = {}));
+/**
+ * Main data type enumeration.
+ *
+ * Data types in this library are all *logical*. They can be expressed as
+ * either a primitive physical type (bytes or bits of some fixed size), a
+ * nested type consisting of other data types, or another data type (e.g. a
+ * timestamp encoded as an int64).
+ *
+ * **Note**: Only enum values 0-17 (NONE through Map) are written to an Arrow
+ * IPC payload.
+ *
+ * The rest of the values are specified here so TypeScript can narrow the type
+ * signatures further beyond the base Arrow Types. The Arrow DataTypes include
+ * metadata like `bitWidth` that impact the type signatures of the values we
+ * accept and return.
+ *
+ * For example, the `Int8Vector` reads 1-byte numbers from an `Int8Array`, an
+ * `Int32Vector` reads a 4-byte number from an `Int32Array`, and an `Int64Vector`
+ * reads a pair of 4-byte lo, hi 32-bit integers as a zero-copy slice from the
+ * underlying `Int32Array`.
+ *
+ * Library consumers benefit by knowing the narrowest type, since we can ensure
+ * the types across all public methods are propagated, and never bail to `any`.
+ * These values are _never_ used at runtime, and they will _never_ be written
+ * to the flatbuffers metadata of serialized Arrow IPC payloads.
+ */
+export var Type;
+(function (Type) {
+    Type[Type["NONE"] = 0] = "NONE";
+    Type[Type["Null"] = 1] = "Null";
+    Type[Type["Int"] = 2] = "Int";
+    Type[Type["Float"] = 3] = "Float";
+    Type[Type["Binary"] = 4] = "Binary";
+    Type[Type["Utf8"] = 5] = "Utf8";
+    Type[Type["Bool"] = 6] = "Bool";
+    Type[Type["Decimal"] = 7] = "Decimal";
+    Type[Type["Date"] = 8] = "Date";
+    Type[Type["Time"] = 9] = "Time";
+    Type[Type["Timestamp"] = 10] = "Timestamp";
+    Type[Type["Interval"] = 11] = "Interval";
+    Type[Type["List"] = 12] = "List";
+    Type[Type["Struct"] = 13] = "Struct";
+    Type[Type["Union"] = 14] = "Union";
+    Type[Type["FixedSizeBinary"] = 15] = "FixedSizeBinary";
+    Type[Type["FixedSizeList"] = 16] = "FixedSizeList";
+    Type[Type["Map"] = 17] = "Map";
+    Type[Type["Dictionary"] = -1] = "Dictionary";
+    Type[Type["Int8"] = -2] = "Int8";
+    Type[Type["Int16"] = -3] = "Int16";
+    Type[Type["Int32"] = -4] = "Int32";
+    Type[Type["Int64"] = -5] = "Int64";
+    Type[Type["Uint8"] = -6] = "Uint8";
+    Type[Type["Uint16"] = -7] = "Uint16";
+    Type[Type["Uint32"] = -8] = "Uint32";
+    Type[Type["Uint64"] = -9] = "Uint64";
+    Type[Type["Float16"] = -10] = "Float16";
+    Type[Type["Float32"] = -11] = "Float32";
+    Type[Type["Float64"] = -12] = "Float64";
+    Type[Type["DateDay"] = -13] = "DateDay";
+    Type[Type["DateMillisecond"] = -14] = "DateMillisecond";
+    Type[Type["TimestampSecond"] = -15] = "TimestampSecond";
+    Type[Type["TimestampMillisecond"] = -16] = "TimestampMillisecond";
+    Type[Type["TimestampMicrosecond"] = -17] = "TimestampMicrosecond";
+    Type[Type["TimestampNanosecond"] = -18] = "TimestampNanosecond";
+    Type[Type["TimeSecond"] = -19] = "TimeSecond";
+    Type[Type["TimeMillisecond"] = -20] = "TimeMillisecond";
+    Type[Type["TimeMicrosecond"] = -21] = "TimeMicrosecond";
+    Type[Type["TimeNanosecond"] = -22] = "TimeNanosecond";
+    Type[Type["DenseUnion"] = -23] = "DenseUnion";
+    Type[Type["SparseUnion"] = -24] = "SparseUnion";
+    Type[Type["IntervalDayTime"] = -25] = "IntervalDayTime";
+    Type[Type["IntervalYearMonth"] = -26] = "IntervalYearMonth";
+})(Type || (Type = {}));
+export var BufferType;
+(function (BufferType) {
+    /**
+     * used in List type, Dense Union and variable length primitive types (String, Binary)
+     */
+    BufferType[BufferType["OFFSET"] = 0] = "OFFSET";
+    /**
+     * actual data, either wixed width primitive types in slots or variable width delimited by an OFFSET vector
+     */
+    BufferType[BufferType["DATA"] = 1] = "DATA";
+    /**
+     * Bit vector indicating if each value is null
+     */
+    BufferType[BufferType["VALIDITY"] = 2] = "VALIDITY";
+    /**
+     * Type vector used in Union type
+     */
+    BufferType[BufferType["TYPE"] = 3] = "TYPE";
+})(BufferType || (BufferType = {}));
+
+//# sourceMappingURL=enum.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/enum.mjs.map b/igv_component/node_modules/apache-arrow/enum.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..3435c91969250f3c6c86a1a82e0e535b31353f61
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/enum.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["enum.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,IAAI;AACJ,EAAE;AACF,6EAA6E;AAC7E,sEAAsE;AACtE,EAAE;AACF,+EAA+E;AAC/E,+EAA+E;AAC/E,mBAAmB;AACnB,EAAE;AACF,IAAI;AAEJ;;;;GAIG;AACH,MAAM,CAAN,IAAY,eA+BX;AA/BD,WAAY,eAAe;IACvB;;OAEG;IACH,iDAAM,CAAA;IAEN;;OAEG;IACH,iDAAM,CAAA;IAEN;;OAEG;IACH,iDAAM,CAAA;IAEN;;OAEG;IACH,iDAAM,CAAA;IAEN;;;;;;;;OAQG;IACH,iDAAM,CAAA;AACV,CAAC,EA/BW,eAAe,KAAf,eAAe,QA+B1B;AAED;;GAEG;AACH,MAAM,CAAN,IAAY,SAGX;AAHD,WAAY,SAAS;IACjB,6CAAU,CAAA;IACV,2CAAS,CAAA;AACb,CAAC,EAHW,SAAS,KAAT,SAAS,QAGpB;AAED;;GAEG;AACH,MAAM,CAAN,IAAY,SAIX;AAJD,WAAY,SAAS;IACjB,yCAAQ,CAAA;IACR,6CAAU,CAAA;IACV,6CAAU,CAAA;AACd,CAAC,EAJW,SAAS,KAAT,SAAS,QAIpB;AAED;;GAEG;AACH,MAAM,CAAN,IAAY,QAGX;AAHD,WAAY,QAAQ;IAChB,qCAAO,CAAA;IACP,qDAAe,CAAA;AACnB,CAAC,EAHW,QAAQ,KAAR,QAAQ,QAGnB;AAED;;GAEG;AACH,MAAM,CAAN,IAAY,QAKX;AALD,WAAY,QAAQ;IAChB,2CAAU,CAAA;IACV,qDAAe,CAAA;IACf,qDAAe,CAAA;IACf,mDAAc,CAAA;AAClB,CAAC,EALW,QAAQ,KAAR,QAAQ,QAKnB;AAED;;GAEG;AACH,MAAM,CAAN,IAAY,YAIX;AAJD,WAAY,YAAY;IACpB,2DAAc,CAAA;IACd,uDAAY,CAAA;IACZ,mEAAkB,CAAA;AACtB,CAAC,EAJW,YAAY,KAAZ,YAAY,QAIvB;AAED;;;;;;;;;;;GAWG;AACH,MAAM,CAAN,IAAY,aAOX;AAPD,WAAY,aAAa;IACrB,iDAAQ,CAAA;IACR,qDAAU,CAAA;IACV,uEAAmB,CAAA;IACnB,+DAAe,CAAA;IACf,qDAAU,CAAA;IACV,iEAAgB,CAAA;AACpB,CAAC,EAPW,aAAa,KAAb,aAAa,QAOxB;AAED;;;;;;;;;;;;;;;;;;;;;;;;;GAyBG;AACH,MAAM,CAAN,IAAY,IA8CX;AA9CD,WAAY,IAAI;IACZ,+BAAQ,CAAA;IACR,+BAAQ,CAAA;IACR,6BAAO,CAAA;IACP,iCAAS,CAAA;IACT,mCAAU,CAAA;IACV,+BAAQ,CAAA;IACR,+BAAQ,CAAA;IACR,qCAAW,CAAA;IACX,+BAAQ,CAAA;IACR,+BAAQ,CAAA;IACR,0CAAc,CAAA;IACd,wCAAa,CAAA;IACb,gCAAS,CAAA;IACT,oCAAW,CAAA;IACX,kCAAU,CAAA;IACV,sDAAoB,CAAA;IACpB,kDAAkB,CAAA;IAClB,8BAAQ,CAAA;IAER,4CAAe,CAAA;IACf,gCAAS,CAAA;IACT,kCAAU,CAAA;IACV,kCAAU,CAAA;IACV,kCAAU,CAAA;IACV,kCAAU,CAAA;IACV,oCAAW,CAAA;IACX,oCAAW,CAAA;IACX,oCAAW,CAAA;IACX,uCAAa,CAAA;IACb,uCAAa,CAAA;IACb,uCAAa,CAAA;IACb,uCAAa,CAAA;IACb,uDAAqB,CAAA;IACrB,uDAAqB,CAAA;IACrB,iEAA0B,CAAA;IAC1B,iEAA0B,CAAA;IAC1B,+DAAyB,CAAA;IACzB,6CAAgB,CAAA;IAChB,uDAAqB,CAAA;IACrB,uDAAqB,CAAA;IACrB,qDAAoB,CAAA;IACpB,6CAAgB,CAAA;IAChB,+CAAiB,CAAA;IACjB,uDAAqB,CAAA;IACrB,2DAAuB,CAAA;AAC3B,CAAC,EA9CW,IAAI,KAAJ,IAAI,QA8Cf;AAED,MAAM,CAAN,IAAY,UAoBX;AApBD,WAAY,UAAU;IAClB;;OAEG;IACH,+CAAU,CAAA;IAEV;;OAEG;IACH,2CAAQ,CAAA;IAER;;OAEG;IACH,mDAAY,CAAA;IAEZ;;OAEG;IACH,2CAAQ,CAAA;AACZ,CAAC,EApBW,UAAU,KAAV,UAAU,QAoBrB","file":"enum.js","sourceRoot":"src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/factories.d.ts b/igv_component/node_modules/apache-arrow/factories.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..7d82dee3cd5bfc94998461fcfa4c17c176efda73
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/factories.d.ts
@@ -0,0 +1,110 @@
+import * as dtypes from './type.js';
+import { Data, DataProps } from './data.js';
+import { BuilderType, JavaScriptDataType } from './interfaces.js';
+import { Vector } from './vector.js';
+import { Builder, BuilderOptions } from './builder.js';
+import { ArrayDataType, BigIntArray, JavaScriptArrayDataType, TypedArray, TypedArrayDataType } from './interfaces.js';
+import { Table } from './table.js';
+export declare function makeBuilder<T extends dtypes.DataType = any, TNull = any>(options: BuilderOptions<T, TNull>): BuilderType<T, TNull>;
+/**
+ * Creates a Vector from a JavaScript array via a {@link Builder}.
+ * Use {@link makeVector} if you only want to create a vector from a typed array.
+ *
+ * @example
+ * ```ts
+ * const vf64 = vectorFromArray([1, 2, 3]);
+ * const vi8 = vectorFromArray([1, 2, 3], new Int8);
+ * const vdict = vectorFromArray(['foo', 'bar']);
+ * const vstruct = vectorFromArray([{a: 'foo', b: 42}, {a: 'bar', b: 12}]);
+ * ```
+ */
+export declare function vectorFromArray(values: readonly (null | undefined)[], type?: dtypes.Null): Vector<dtypes.Null>;
+export declare function vectorFromArray(values: readonly (null | undefined | boolean)[], type?: dtypes.Bool): Vector<dtypes.Bool>;
+export declare function vectorFromArray<T extends dtypes.Utf8 | dtypes.Dictionary<dtypes.Utf8> = dtypes.Dictionary<dtypes.Utf8, dtypes.Int32>>(values: readonly (null | undefined | string)[], type?: T): Vector<T>;
+export declare function vectorFromArray<T extends dtypes.Date_>(values: readonly (null | undefined | Date)[], type?: T): Vector<T>;
+export declare function vectorFromArray<T extends dtypes.Int>(values: readonly (null | undefined | number)[], type: T): Vector<T>;
+export declare function vectorFromArray<T extends dtypes.Int64 | dtypes.Uint64 = dtypes.Int64>(values: readonly (null | undefined | bigint)[], type?: T): Vector<T>;
+export declare function vectorFromArray<T extends dtypes.Float = dtypes.Float64>(values: readonly (null | undefined | number)[], type?: T): Vector<T>;
+export declare function vectorFromArray<T extends dtypes.DataType>(values: readonly (unknown)[], type: T): Vector<T>;
+export declare function vectorFromArray<T extends readonly unknown[]>(values: T): Vector<JavaScriptArrayDataType<T>>;
+/** Creates a Vector from a typed array via {@link makeVector}. */
+export declare function vectorFromArray<T extends TypedArray | BigIntArray>(data: T): Vector<TypedArrayDataType<T>>;
+export declare function vectorFromArray<T extends dtypes.DataType>(data: Data<T>): Vector<T>;
+export declare function vectorFromArray<T extends dtypes.DataType>(data: Vector<T>): Vector<T>;
+export declare function vectorFromArray<T extends dtypes.DataType>(data: DataProps<T>): Vector<T>;
+export declare function vectorFromArray<T extends TypedArray | BigIntArray | readonly unknown[]>(data: T): Vector<ArrayDataType<T>>;
+/**
+ * Creates a {@link Table} from an array of objects.
+ *
+ * @param array A table of objects.
+ */
+export declare function tableFromJSON<T extends Record<string, unknown>>(array: T[]): Table<{
+    [P in keyof T]: JavaScriptDataType<T[P]>;
+}>;
+/**
+ * A set of options to create an Iterable or AsyncIterable `Builder` transform function.
+ * @see {@link builderThroughIterable}
+ * @see {@link builderThroughAsyncIterable}
+ */
+export interface IterableBuilderOptions<T extends dtypes.DataType = any, TNull = any> extends BuilderOptions<T, TNull> {
+    highWaterMark?: number;
+    queueingStrategy?: 'bytes' | 'count';
+    dictionaryHashFunction?: (value: any) => string | number;
+    valueToChildTypeId?: (builder: Builder<T, TNull>, value: any, offset: number) => number;
+}
+/** @ignore */
+declare type ThroughIterable<T extends dtypes.DataType = any, TNull = any> = (source: Iterable<T['TValue'] | TNull>) => IterableIterator<Vector<T>>;
+/**
+ * Transform a synchronous `Iterable` of arbitrary JavaScript values into a
+ * sequence of Arrow Vector<T> following the chunking semantics defined in
+ * the supplied `options` argument.
+ *
+ * This function returns a function that accepts an `Iterable` of values to
+ * transform. When called, this function returns an Iterator of `Vector<T>`.
+ *
+ * The resulting `Iterator<Vector<T>>` yields Vectors based on the
+ * `queueingStrategy` and `highWaterMark` specified in the `options` argument.
+ *
+ * * If `queueingStrategy` is `"count"` (or omitted), The `Iterator<Vector<T>>`
+ *   will flush the underlying `Builder` (and yield a new `Vector<T>`) once the
+ *   Builder's `length` reaches or exceeds the supplied `highWaterMark`.
+ * * If `queueingStrategy` is `"bytes"`, the `Iterator<Vector<T>>` will flush
+ *   the underlying `Builder` (and yield a new `Vector<T>`) once its `byteLength`
+ *   reaches or exceeds the supplied `highWaterMark`.
+ *
+ * @param {IterableBuilderOptions<T, TNull>} options An object of properties which determine the `Builder` to create and the chunking semantics to use.
+ * @returns A function which accepts a JavaScript `Iterable` of values to
+ *          write, and returns an `Iterator` that yields Vectors according
+ *          to the chunking semantics defined in the `options` argument.
+ * @nocollapse
+ */
+export declare function builderThroughIterable<T extends dtypes.DataType = any, TNull = any>(options: IterableBuilderOptions<T, TNull>): ThroughIterable<T, TNull>;
+/** @ignore */
+declare type ThroughAsyncIterable<T extends dtypes.DataType = any, TNull = any> = (source: Iterable<T['TValue'] | TNull> | AsyncIterable<T['TValue'] | TNull>) => AsyncIterableIterator<Vector<T>>;
+/**
+ * Transform an `AsyncIterable` of arbitrary JavaScript values into a
+ * sequence of Arrow Vector<T> following the chunking semantics defined in
+ * the supplied `options` argument.
+ *
+ * This function returns a function that accepts an `AsyncIterable` of values to
+ * transform. When called, this function returns an AsyncIterator of `Vector<T>`.
+ *
+ * The resulting `AsyncIterator<Vector<T>>` yields Vectors based on the
+ * `queueingStrategy` and `highWaterMark` specified in the `options` argument.
+ *
+ * * If `queueingStrategy` is `"count"` (or omitted), The `AsyncIterator<Vector<T>>`
+ *   will flush the underlying `Builder` (and yield a new `Vector<T>`) once the
+ *   Builder's `length` reaches or exceeds the supplied `highWaterMark`.
+ * * If `queueingStrategy` is `"bytes"`, the `AsyncIterator<Vector<T>>` will flush
+ *   the underlying `Builder` (and yield a new `Vector<T>`) once its `byteLength`
+ *   reaches or exceeds the supplied `highWaterMark`.
+ *
+ * @param {IterableBuilderOptions<T, TNull>} options An object of properties which determine the `Builder` to create and the chunking semantics to use.
+ * @returns A function which accepts a JavaScript `AsyncIterable` of values
+ *          to write, and returns an `AsyncIterator` that yields Vectors
+ *          according to the chunking semantics defined in the `options`
+ *          argument.
+ * @nocollapse
+ */
+export declare function builderThroughAsyncIterable<T extends dtypes.DataType = any, TNull = any>(options: IterableBuilderOptions<T, TNull>): ThroughAsyncIterable<T, TNull>;
+export {};
diff --git a/igv_component/node_modules/apache-arrow/factories.d.ts.map b/igv_component/node_modules/apache-arrow/factories.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..1db006eaecb2d85330efa69f19c65b9db0bd25fb
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/factories.d.ts.map
@@ -0,0 +1 @@
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diff --git a/igv_component/node_modules/apache-arrow/factories.js b/igv_component/node_modules/apache-arrow/factories.js
new file mode 100644
index 0000000000000000000000000000000000000000..82cff6b8fea50f9ddaf555b280cca141cf29ce07
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/factories.js
@@ -0,0 +1,250 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.builderThroughAsyncIterable = exports.builderThroughIterable = exports.tableFromJSON = exports.vectorFromArray = exports.makeBuilder = void 0;
+const tslib_1 = require("tslib");
+const schema_js_1 = require("./schema.js");
+const dtypes = tslib_1.__importStar(require("./type.js"));
+const data_js_1 = require("./data.js");
+const vector_js_1 = require("./vector.js");
+const builderctor_js_1 = require("./visitor/builderctor.js");
+const table_js_1 = require("./table.js");
+const recordbatch_js_1 = require("./recordbatch.js");
+const typecomparator_js_1 = require("./visitor/typecomparator.js");
+function makeBuilder(options) {
+    const type = options.type;
+    const builder = new (builderctor_js_1.instance.getVisitFn(type)())(options);
+    if (type.children && type.children.length > 0) {
+        const children = options['children'] || [];
+        const defaultOptions = { 'nullValues': options['nullValues'] };
+        const getChildOptions = Array.isArray(children)
+            ? ((_, i) => children[i] || defaultOptions)
+            : (({ name }) => children[name] || defaultOptions);
+        for (const [index, field] of type.children.entries()) {
+            const { type } = field;
+            const opts = getChildOptions(field, index);
+            builder.children.push(makeBuilder(Object.assign(Object.assign({}, opts), { type })));
+        }
+    }
+    return builder;
+}
+exports.makeBuilder = makeBuilder;
+function vectorFromArray(init, type) {
+    if (init instanceof data_js_1.Data || init instanceof vector_js_1.Vector || init.type instanceof dtypes.DataType || ArrayBuffer.isView(init)) {
+        return (0, vector_js_1.makeVector)(init);
+    }
+    const options = { type: type !== null && type !== void 0 ? type : inferType(init), nullValues: [null] };
+    const chunks = [...builderThroughIterable(options)(init)];
+    const vector = chunks.length === 1 ? chunks[0] : chunks.reduce((a, b) => a.concat(b));
+    if (dtypes.DataType.isDictionary(vector.type)) {
+        return vector.memoize();
+    }
+    return vector;
+}
+exports.vectorFromArray = vectorFromArray;
+/**
+ * Creates a {@link Table} from an array of objects.
+ *
+ * @param array A table of objects.
+ */
+function tableFromJSON(array) {
+    const vector = vectorFromArray(array);
+    const batch = new recordbatch_js_1.RecordBatch(new schema_js_1.Schema(vector.type.children), vector.data[0]);
+    return new table_js_1.Table(batch);
+}
+exports.tableFromJSON = tableFromJSON;
+function inferType(value) {
+    if (value.length === 0) {
+        return new dtypes.Null;
+    }
+    let nullsCount = 0;
+    let arraysCount = 0;
+    let objectsCount = 0;
+    let numbersCount = 0;
+    let stringsCount = 0;
+    let bigintsCount = 0;
+    let booleansCount = 0;
+    let datesCount = 0;
+    for (const val of value) {
+        if (val == null) {
+            ++nullsCount;
+            continue;
+        }
+        switch (typeof val) {
+            case 'bigint':
+                ++bigintsCount;
+                continue;
+            case 'boolean':
+                ++booleansCount;
+                continue;
+            case 'number':
+                ++numbersCount;
+                continue;
+            case 'string':
+                ++stringsCount;
+                continue;
+            case 'object':
+                if (Array.isArray(val)) {
+                    ++arraysCount;
+                }
+                else if (Object.prototype.toString.call(val) === '[object Date]') {
+                    ++datesCount;
+                }
+                else {
+                    ++objectsCount;
+                }
+                continue;
+        }
+        throw new TypeError('Unable to infer Vector type from input values, explicit type declaration expected');
+    }
+    if (numbersCount + nullsCount === value.length) {
+        return new dtypes.Float64;
+    }
+    else if (stringsCount + nullsCount === value.length) {
+        return new dtypes.Dictionary(new dtypes.Utf8, new dtypes.Int32);
+    }
+    else if (bigintsCount + nullsCount === value.length) {
+        return new dtypes.Int64;
+    }
+    else if (booleansCount + nullsCount === value.length) {
+        return new dtypes.Bool;
+    }
+    else if (datesCount + nullsCount === value.length) {
+        return new dtypes.DateMillisecond;
+    }
+    else if (arraysCount + nullsCount === value.length) {
+        const array = value;
+        const childType = inferType(array[array.findIndex((ary) => ary != null)]);
+        if (array.every((ary) => ary == null || (0, typecomparator_js_1.compareTypes)(childType, inferType(ary)))) {
+            return new dtypes.List(new schema_js_1.Field('', childType, true));
+        }
+    }
+    else if (objectsCount + nullsCount === value.length) {
+        const fields = new Map();
+        for (const row of value) {
+            for (const key of Object.keys(row)) {
+                if (!fields.has(key) && row[key] != null) {
+                    // use the type inferred for the first instance of a found key
+                    fields.set(key, new schema_js_1.Field(key, inferType([row[key]]), true));
+                }
+            }
+        }
+        return new dtypes.Struct([...fields.values()]);
+    }
+    throw new TypeError('Unable to infer Vector type from input values, explicit type declaration expected');
+}
+/**
+ * Transform a synchronous `Iterable` of arbitrary JavaScript values into a
+ * sequence of Arrow Vector<T> following the chunking semantics defined in
+ * the supplied `options` argument.
+ *
+ * This function returns a function that accepts an `Iterable` of values to
+ * transform. When called, this function returns an Iterator of `Vector<T>`.
+ *
+ * The resulting `Iterator<Vector<T>>` yields Vectors based on the
+ * `queueingStrategy` and `highWaterMark` specified in the `options` argument.
+ *
+ * * If `queueingStrategy` is `"count"` (or omitted), The `Iterator<Vector<T>>`
+ *   will flush the underlying `Builder` (and yield a new `Vector<T>`) once the
+ *   Builder's `length` reaches or exceeds the supplied `highWaterMark`.
+ * * If `queueingStrategy` is `"bytes"`, the `Iterator<Vector<T>>` will flush
+ *   the underlying `Builder` (and yield a new `Vector<T>`) once its `byteLength`
+ *   reaches or exceeds the supplied `highWaterMark`.
+ *
+ * @param {IterableBuilderOptions<T, TNull>} options An object of properties which determine the `Builder` to create and the chunking semantics to use.
+ * @returns A function which accepts a JavaScript `Iterable` of values to
+ *          write, and returns an `Iterator` that yields Vectors according
+ *          to the chunking semantics defined in the `options` argument.
+ * @nocollapse
+ */
+function builderThroughIterable(options) {
+    const { ['queueingStrategy']: queueingStrategy = 'count' } = options;
+    const { ['highWaterMark']: highWaterMark = queueingStrategy !== 'bytes' ? Number.POSITIVE_INFINITY : Math.pow(2, 14) } = options;
+    const sizeProperty = queueingStrategy !== 'bytes' ? 'length' : 'byteLength';
+    return function* (source) {
+        let numChunks = 0;
+        const builder = makeBuilder(options);
+        for (const value of source) {
+            if (builder.append(value)[sizeProperty] >= highWaterMark) {
+                ++numChunks && (yield builder.toVector());
+            }
+        }
+        if (builder.finish().length > 0 || numChunks === 0) {
+            yield builder.toVector();
+        }
+    };
+}
+exports.builderThroughIterable = builderThroughIterable;
+/**
+ * Transform an `AsyncIterable` of arbitrary JavaScript values into a
+ * sequence of Arrow Vector<T> following the chunking semantics defined in
+ * the supplied `options` argument.
+ *
+ * This function returns a function that accepts an `AsyncIterable` of values to
+ * transform. When called, this function returns an AsyncIterator of `Vector<T>`.
+ *
+ * The resulting `AsyncIterator<Vector<T>>` yields Vectors based on the
+ * `queueingStrategy` and `highWaterMark` specified in the `options` argument.
+ *
+ * * If `queueingStrategy` is `"count"` (or omitted), The `AsyncIterator<Vector<T>>`
+ *   will flush the underlying `Builder` (and yield a new `Vector<T>`) once the
+ *   Builder's `length` reaches or exceeds the supplied `highWaterMark`.
+ * * If `queueingStrategy` is `"bytes"`, the `AsyncIterator<Vector<T>>` will flush
+ *   the underlying `Builder` (and yield a new `Vector<T>`) once its `byteLength`
+ *   reaches or exceeds the supplied `highWaterMark`.
+ *
+ * @param {IterableBuilderOptions<T, TNull>} options An object of properties which determine the `Builder` to create and the chunking semantics to use.
+ * @returns A function which accepts a JavaScript `AsyncIterable` of values
+ *          to write, and returns an `AsyncIterator` that yields Vectors
+ *          according to the chunking semantics defined in the `options`
+ *          argument.
+ * @nocollapse
+ */
+function builderThroughAsyncIterable(options) {
+    const { ['queueingStrategy']: queueingStrategy = 'count' } = options;
+    const { ['highWaterMark']: highWaterMark = queueingStrategy !== 'bytes' ? Number.POSITIVE_INFINITY : Math.pow(2, 14) } = options;
+    const sizeProperty = queueingStrategy !== 'bytes' ? 'length' : 'byteLength';
+    return function (source) {
+        return tslib_1.__asyncGenerator(this, arguments, function* () {
+            var e_1, _a;
+            let numChunks = 0;
+            const builder = makeBuilder(options);
+            try {
+                for (var source_1 = tslib_1.__asyncValues(source), source_1_1; source_1_1 = yield tslib_1.__await(source_1.next()), !source_1_1.done;) {
+                    const value = source_1_1.value;
+                    if (builder.append(value)[sizeProperty] >= highWaterMark) {
+                        ++numChunks && (yield yield tslib_1.__await(builder.toVector()));
+                    }
+                }
+            }
+            catch (e_1_1) { e_1 = { error: e_1_1 }; }
+            finally {
+                try {
+                    if (source_1_1 && !source_1_1.done && (_a = source_1.return)) yield tslib_1.__await(_a.call(source_1));
+                }
+                finally { if (e_1) throw e_1.error; }
+            }
+            if (builder.finish().length > 0 || numChunks === 0) {
+                yield yield tslib_1.__await(builder.toVector());
+            }
+        });
+    };
+}
+exports.builderThroughAsyncIterable = builderThroughAsyncIterable;
+
+//# sourceMappingURL=factories.js.map
diff --git a/igv_component/node_modules/apache-arrow/factories.js.map b/igv_component/node_modules/apache-arrow/factories.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..7935e3897a4ce0605fb28e40832139f99aadf721
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/factories.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/factories.mjs b/igv_component/node_modules/apache-arrow/factories.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..5bb27a92d92478056ba3402945adbb8bdf2e13fe
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/factories.mjs
@@ -0,0 +1,242 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { __asyncGenerator, __asyncValues, __await } from "tslib";
+import { Field, Schema } from './schema.mjs';
+import * as dtypes from './type.mjs';
+import { Data } from './data.mjs';
+import { Vector, makeVector } from './vector.mjs';
+import { instance as getBuilderConstructor } from './visitor/builderctor.mjs';
+import { Table } from './table.mjs';
+import { RecordBatch } from './recordbatch.mjs';
+import { compareTypes } from './visitor/typecomparator.mjs';
+export function makeBuilder(options) {
+    const type = options.type;
+    const builder = new (getBuilderConstructor.getVisitFn(type)())(options);
+    if (type.children && type.children.length > 0) {
+        const children = options['children'] || [];
+        const defaultOptions = { 'nullValues': options['nullValues'] };
+        const getChildOptions = Array.isArray(children)
+            ? ((_, i) => children[i] || defaultOptions)
+            : (({ name }) => children[name] || defaultOptions);
+        for (const [index, field] of type.children.entries()) {
+            const { type } = field;
+            const opts = getChildOptions(field, index);
+            builder.children.push(makeBuilder(Object.assign(Object.assign({}, opts), { type })));
+        }
+    }
+    return builder;
+}
+export function vectorFromArray(init, type) {
+    if (init instanceof Data || init instanceof Vector || init.type instanceof dtypes.DataType || ArrayBuffer.isView(init)) {
+        return makeVector(init);
+    }
+    const options = { type: type !== null && type !== void 0 ? type : inferType(init), nullValues: [null] };
+    const chunks = [...builderThroughIterable(options)(init)];
+    const vector = chunks.length === 1 ? chunks[0] : chunks.reduce((a, b) => a.concat(b));
+    if (dtypes.DataType.isDictionary(vector.type)) {
+        return vector.memoize();
+    }
+    return vector;
+}
+/**
+ * Creates a {@link Table} from an array of objects.
+ *
+ * @param array A table of objects.
+ */
+export function tableFromJSON(array) {
+    const vector = vectorFromArray(array);
+    const batch = new RecordBatch(new Schema(vector.type.children), vector.data[0]);
+    return new Table(batch);
+}
+function inferType(value) {
+    if (value.length === 0) {
+        return new dtypes.Null;
+    }
+    let nullsCount = 0;
+    let arraysCount = 0;
+    let objectsCount = 0;
+    let numbersCount = 0;
+    let stringsCount = 0;
+    let bigintsCount = 0;
+    let booleansCount = 0;
+    let datesCount = 0;
+    for (const val of value) {
+        if (val == null) {
+            ++nullsCount;
+            continue;
+        }
+        switch (typeof val) {
+            case 'bigint':
+                ++bigintsCount;
+                continue;
+            case 'boolean':
+                ++booleansCount;
+                continue;
+            case 'number':
+                ++numbersCount;
+                continue;
+            case 'string':
+                ++stringsCount;
+                continue;
+            case 'object':
+                if (Array.isArray(val)) {
+                    ++arraysCount;
+                }
+                else if (Object.prototype.toString.call(val) === '[object Date]') {
+                    ++datesCount;
+                }
+                else {
+                    ++objectsCount;
+                }
+                continue;
+        }
+        throw new TypeError('Unable to infer Vector type from input values, explicit type declaration expected');
+    }
+    if (numbersCount + nullsCount === value.length) {
+        return new dtypes.Float64;
+    }
+    else if (stringsCount + nullsCount === value.length) {
+        return new dtypes.Dictionary(new dtypes.Utf8, new dtypes.Int32);
+    }
+    else if (bigintsCount + nullsCount === value.length) {
+        return new dtypes.Int64;
+    }
+    else if (booleansCount + nullsCount === value.length) {
+        return new dtypes.Bool;
+    }
+    else if (datesCount + nullsCount === value.length) {
+        return new dtypes.DateMillisecond;
+    }
+    else if (arraysCount + nullsCount === value.length) {
+        const array = value;
+        const childType = inferType(array[array.findIndex((ary) => ary != null)]);
+        if (array.every((ary) => ary == null || compareTypes(childType, inferType(ary)))) {
+            return new dtypes.List(new Field('', childType, true));
+        }
+    }
+    else if (objectsCount + nullsCount === value.length) {
+        const fields = new Map();
+        for (const row of value) {
+            for (const key of Object.keys(row)) {
+                if (!fields.has(key) && row[key] != null) {
+                    // use the type inferred for the first instance of a found key
+                    fields.set(key, new Field(key, inferType([row[key]]), true));
+                }
+            }
+        }
+        return new dtypes.Struct([...fields.values()]);
+    }
+    throw new TypeError('Unable to infer Vector type from input values, explicit type declaration expected');
+}
+/**
+ * Transform a synchronous `Iterable` of arbitrary JavaScript values into a
+ * sequence of Arrow Vector<T> following the chunking semantics defined in
+ * the supplied `options` argument.
+ *
+ * This function returns a function that accepts an `Iterable` of values to
+ * transform. When called, this function returns an Iterator of `Vector<T>`.
+ *
+ * The resulting `Iterator<Vector<T>>` yields Vectors based on the
+ * `queueingStrategy` and `highWaterMark` specified in the `options` argument.
+ *
+ * * If `queueingStrategy` is `"count"` (or omitted), The `Iterator<Vector<T>>`
+ *   will flush the underlying `Builder` (and yield a new `Vector<T>`) once the
+ *   Builder's `length` reaches or exceeds the supplied `highWaterMark`.
+ * * If `queueingStrategy` is `"bytes"`, the `Iterator<Vector<T>>` will flush
+ *   the underlying `Builder` (and yield a new `Vector<T>`) once its `byteLength`
+ *   reaches or exceeds the supplied `highWaterMark`.
+ *
+ * @param {IterableBuilderOptions<T, TNull>} options An object of properties which determine the `Builder` to create and the chunking semantics to use.
+ * @returns A function which accepts a JavaScript `Iterable` of values to
+ *          write, and returns an `Iterator` that yields Vectors according
+ *          to the chunking semantics defined in the `options` argument.
+ * @nocollapse
+ */
+export function builderThroughIterable(options) {
+    const { ['queueingStrategy']: queueingStrategy = 'count' } = options;
+    const { ['highWaterMark']: highWaterMark = queueingStrategy !== 'bytes' ? Number.POSITIVE_INFINITY : Math.pow(2, 14) } = options;
+    const sizeProperty = queueingStrategy !== 'bytes' ? 'length' : 'byteLength';
+    return function* (source) {
+        let numChunks = 0;
+        const builder = makeBuilder(options);
+        for (const value of source) {
+            if (builder.append(value)[sizeProperty] >= highWaterMark) {
+                ++numChunks && (yield builder.toVector());
+            }
+        }
+        if (builder.finish().length > 0 || numChunks === 0) {
+            yield builder.toVector();
+        }
+    };
+}
+/**
+ * Transform an `AsyncIterable` of arbitrary JavaScript values into a
+ * sequence of Arrow Vector<T> following the chunking semantics defined in
+ * the supplied `options` argument.
+ *
+ * This function returns a function that accepts an `AsyncIterable` of values to
+ * transform. When called, this function returns an AsyncIterator of `Vector<T>`.
+ *
+ * The resulting `AsyncIterator<Vector<T>>` yields Vectors based on the
+ * `queueingStrategy` and `highWaterMark` specified in the `options` argument.
+ *
+ * * If `queueingStrategy` is `"count"` (or omitted), The `AsyncIterator<Vector<T>>`
+ *   will flush the underlying `Builder` (and yield a new `Vector<T>`) once the
+ *   Builder's `length` reaches or exceeds the supplied `highWaterMark`.
+ * * If `queueingStrategy` is `"bytes"`, the `AsyncIterator<Vector<T>>` will flush
+ *   the underlying `Builder` (and yield a new `Vector<T>`) once its `byteLength`
+ *   reaches or exceeds the supplied `highWaterMark`.
+ *
+ * @param {IterableBuilderOptions<T, TNull>} options An object of properties which determine the `Builder` to create and the chunking semantics to use.
+ * @returns A function which accepts a JavaScript `AsyncIterable` of values
+ *          to write, and returns an `AsyncIterator` that yields Vectors
+ *          according to the chunking semantics defined in the `options`
+ *          argument.
+ * @nocollapse
+ */
+export function builderThroughAsyncIterable(options) {
+    const { ['queueingStrategy']: queueingStrategy = 'count' } = options;
+    const { ['highWaterMark']: highWaterMark = queueingStrategy !== 'bytes' ? Number.POSITIVE_INFINITY : Math.pow(2, 14) } = options;
+    const sizeProperty = queueingStrategy !== 'bytes' ? 'length' : 'byteLength';
+    return function (source) {
+        return __asyncGenerator(this, arguments, function* () {
+            var e_1, _a;
+            let numChunks = 0;
+            const builder = makeBuilder(options);
+            try {
+                for (var source_1 = __asyncValues(source), source_1_1; source_1_1 = yield __await(source_1.next()), !source_1_1.done;) {
+                    const value = source_1_1.value;
+                    if (builder.append(value)[sizeProperty] >= highWaterMark) {
+                        ++numChunks && (yield yield __await(builder.toVector()));
+                    }
+                }
+            }
+            catch (e_1_1) { e_1 = { error: e_1_1 }; }
+            finally {
+                try {
+                    if (source_1_1 && !source_1_1.done && (_a = source_1.return)) yield __await(_a.call(source_1));
+                }
+                finally { if (e_1) throw e_1.error; }
+            }
+            if (builder.finish().length > 0 || numChunks === 0) {
+                yield yield __await(builder.toVector());
+            }
+        });
+    };
+}
+
+//# sourceMappingURL=factories.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/factories.mjs.map b/igv_component/node_modules/apache-arrow/factories.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..36c55274cb0498c923f1d18a5048e1b2aa8794b5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/factories.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["factories.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;AAErB,OAAO,EAAE,KAAK,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AAC5C,OAAO,KAAK,MAAM,MAAM,WAAW,CAAC;AACpC,OAAO,EAAE,IAAI,EAAa,MAAM,WAAW,CAAC;AAE5C,OAAO,EAAE,MAAM,EAAE,UAAU,EAAE,MAAM,aAAa,CAAC;AAEjD,OAAO,EAAE,QAAQ,IAAI,qBAAqB,EAAE,MAAM,0BAA0B,CAAC;AAE7E,OAAO,EAAE,KAAK,EAAE,MAAM,YAAY,CAAC;AACnC,OAAO,EAAE,WAAW,EAAE,MAAM,kBAAkB,CAAC;AAC/C,OAAO,EAAE,YAAY,EAAE,MAAM,6BAA6B,CAAC;AAE3D,MAAM,UAAU,WAAW,CAA+C,OAAiC;IAEvG,MAAM,IAAI,GAAG,OAAO,CAAC,IAAI,CAAC;IAC1B,MAAM,OAAO,GAAG,IAAI,CAAC,qBAAqB,CAAC,UAAU,CAAI,IAAI,CAAC,EAAE,CAAC,CAAC,OAAO,CAAsB,CAAC;IAEhG,IAAI,IAAI,CAAC,QAAQ,IAAI,IAAI,CAAC,QAAQ,CAAC,MAAM,GAAG,CAAC,EAAE;QAE3C,MAAM,QAAQ,GAAG,OAAO,CAAC,UAAU,CAAC,IAAI,EAAsB,CAAC;QAC/D,MAAM,cAAc,GAAG,EAAE,YAAY,EAAE,OAAO,CAAC,YAAY,CAAC,EAAE,CAAC;QAC/D,MAAM,eAAe,GAAG,KAAK,CAAC,OAAO,CAAC,QAAQ,CAAC;YAC3C,CAAC,CAAC,CAAC,CAAC,CAAQ,EAAE,CAAS,EAAE,EAAE,CAAC,QAAQ,CAAC,CAAC,CAAC,IAAI,cAAc,CAAC;YAC1D,CAAC,CAAC,CAAC,CAAC,EAAE,IAAI,EAAS,EAAE,EAAE,CAAC,QAAQ,CAAC,IAAI,CAAC,IAAI,cAAc,CAAC,CAAC;QAE9D,KAAK,MAAM,CAAC,KAAK,EAAE,KAAK,CAAC,IAAI,IAAI,CAAC,QAAQ,CAAC,OAAO,EAAE,EAAE;YAClD,MAAM,EAAE,IAAI,EAAE,GAAG,KAAK,CAAC;YACvB,MAAM,IAAI,GAAG,eAAe,CAAC,KAAK,EAAE,KAAK,CAAC,CAAC;YAC3C,OAAO,CAAC,QAAQ,CAAC,IAAI,CAAC,WAAW,iCAAM,IAAI,KAAE,IAAI,IAAG,CAAC,CAAC;SACzD;KACJ;IAED,OAAO,OAAgC,CAAC;AAC5C,CAAC;AA+BD,MAAM,UAAU,eAAe,CAAC,IAAS,EAAE,IAAsB;IAC7D,IAAI,IAAI,YAAY,IAAI,IAAI,IAAI,YAAY,MAAM,IAAI,IAAI,CAAC,IAAI,YAAY,MAAM,CAAC,QAAQ,IAAI,WAAW,CAAC,MAAM,CAAC,IAAI,CAAC,EAAE;QACpH,OAAO,UAAU,CAAC,IAAW,CAAC,CAAC;KAClC;IACD,MAAM,OAAO,GAA2B,EAAE,IAAI,EAAE,IAAI,aAAJ,IAAI,cAAJ,IAAI,GAAI,SAAS,CAAC,IAAI,CAAC,EAAE,UAAU,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC;IAC9F,MAAM,MAAM,GAAG,CAAC,GAAG,sBAAsB,CAAC,OAAO,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC;IAC1D,MAAM,MAAM,GAAG,MAAM,CAAC,MAAM,KAAK,CAAC,CAAC,CAAC,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC;IACtF,IAAI,MAAM,CAAC,QAAQ,CAAC,YAAY,CAAC,MAAM,CAAC,IAAI,CAAC,EAAE;QAC3C,OAAO,MAAM,CAAC,OAAO,EAAE,CAAC;KAC3B;IACD,OAAO,MAAM,CAAC;AAClB,CAAC;AAED;;;;GAIG;AACH,MAAM,UAAU,aAAa,CAAoC,KAAU;IACvE,MAAM,MAAM,GAAG,eAAe,CAAC,KAAK,CAA+B,CAAC;IACpE,MAAM,KAAK,GAAG,IAAI,WAAW,CAAC,IAAI,MAAM,CAAC,MAAM,CAAC,IAAI,CAAC,QAAQ,CAAC,EAAE,MAAM,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC,CAAC;IAChF,OAAO,IAAI,KAAK,CAAC,KAAK,CAAC,CAAC;AAC5B,CAAC;AAID,SAAS,SAAS,CAAC,KAAyB;IACxC,IAAI,KAAK,CAAC,MAAM,KAAK,CAAC,EAAE;QAAE,OAAO,IAAI,MAAM,CAAC,IAAI,CAAC;KAAE;IACnD,IAAI,UAAU,GAAG,CAAC,CAAC;IACnB,IAAI,WAAW,GAAG,CAAC,CAAC;IACpB,IAAI,YAAY,GAAG,CAAC,CAAC;IACrB,IAAI,YAAY,GAAG,CAAC,CAAC;IACrB,IAAI,YAAY,GAAG,CAAC,CAAC;IACrB,IAAI,YAAY,GAAG,CAAC,CAAC;IACrB,IAAI,aAAa,GAAG,CAAC,CAAC;IACtB,IAAI,UAAU,GAAG,CAAC,CAAC;IAEnB,KAAK,MAAM,GAAG,IAAI,KAAK,EAAE;QACrB,IAAI,GAAG,IAAI,IAAI,EAAE;YAAE,EAAE,UAAU,CAAC;YAAC,SAAS;SAAE;QAC5C,QAAQ,OAAO,GAAG,EAAE;YAChB,KAAK,QAAQ;gBAAE,EAAE,YAAY,CAAC;gBAAC,SAAS;YACxC,KAAK,SAAS;gBAAE,EAAE,aAAa,CAAC;gBAAC,SAAS;YAC1C,KAAK,QAAQ;gBAAE,EAAE,YAAY,CAAC;gBAAC,SAAS;YACxC,KAAK,QAAQ;gBAAE,EAAE,YAAY,CAAC;gBAAC,SAAS;YACxC,KAAK,QAAQ;gBACT,IAAI,KAAK,CAAC,OAAO,CAAC,GAAG,CAAC,EAAE;oBACpB,EAAE,WAAW,CAAC;iBACjB;qBAAM,IAAI,MAAM,CAAC,SAAS,CAAC,QAAQ,CAAC,IAAI,CAAC,GAAG,CAAC,KAAK,eAAe,EAAE;oBAChE,EAAE,UAAU,CAAC;iBAChB;qBAAM;oBACH,EAAE,YAAY,CAAC;iBAClB;gBACD,SAAS;SAChB;QACD,MAAM,IAAI,SAAS,CAAC,mFAAmF,CAAC,CAAC;KAC5G;IAED,IAAI,YAAY,GAAG,UAAU,KAAK,KAAK,CAAC,MAAM,EAAE;QAC5C,OAAO,IAAI,MAAM,CAAC,OAAO,CAAC;KAC7B;SAAM,IAAI,YAAY,GAAG,UAAU,KAAK,KAAK,CAAC,MAAM,EAAE;QACnD,OAAO,IAAI,MAAM,CAAC,UAAU,CAAC,IAAI,MAAM,CAAC,IAAI,EAAE,IAAI,MAAM,CAAC,KAAK,CAAC,CAAC;KACnE;SAAM,IAAI,YAAY,GAAG,UAAU,KAAK,KAAK,CAAC,MAAM,EAAE;QACnD,OAAO,IAAI,MAAM,CAAC,KAAK,CAAC;KAC3B;SAAM,IAAI,aAAa,GAAG,UAAU,KAAK,KAAK,CAAC,MAAM,EAAE;QACpD,OAAO,IAAI,MAAM,CAAC,IAAI,CAAC;KAC1B;SAAM,IAAI,UAAU,GAAG,UAAU,KAAK,KAAK,CAAC,MAAM,EAAE;QACjD,OAAO,IAAI,MAAM,CAAC,eAAe,CAAC;KACrC;SAAM,IAAI,WAAW,GAAG,UAAU,KAAK,KAAK,CAAC,MAAM,EAAE;QAClD,MAAM,KAAK,GAAG,KAAyB,CAAC;QACxC,MAAM,SAAS,GAAG,SAAS,CAAC,KAAK,CAAC,KAAK,CAAC,SAAS,CAAC,CAAC,GAAG,EAAE,EAAE,CAAC,GAAG,IAAI,IAAI,CAAC,CAAC,CAAC,CAAC;QAC1E,IAAI,KAAK,CAAC,KAAK,CAAC,CAAC,GAAG,EAAE,EAAE,CAAC,GAAG,IAAI,IAAI,IAAI,YAAY,CAAC,SAAS,EAAE,SAAS,CAAC,GAAG,CAAC,CAAC,CAAC,EAAE;YAC9E,OAAO,IAAI,MAAM,CAAC,IAAI,CAAC,IAAI,KAAK,CAAC,EAAE,EAAE,SAAS,EAAE,IAAI,CAAC,CAAC,CAAC;SAC1D;KACJ;SAAM,IAAI,YAAY,GAAG,UAAU,KAAK,KAAK,CAAC,MAAM,EAAE;QACnD,MAAM,MAAM,GAAG,IAAI,GAAG,EAAiB,CAAC;QACxC,KAAK,MAAM,GAAG,IAAI,KAAkC,EAAE;YAClD,KAAK,MAAM,GAAG,IAAI,MAAM,CAAC,IAAI,CAAC,GAAG,CAAC,EAAE;gBAChC,IAAI,CAAC,MAAM,CAAC,GAAG,CAAC,GAAG,CAAC,IAAI,GAAG,CAAC,GAAG,CAAC,IAAI,IAAI,EAAE;oBACtC,8DAA8D;oBAC9D,MAAM,CAAC,GAAG,CAAC,GAAG,EAAE,IAAI,KAAK,CAAC,GAAG,EAAE,SAAS,CAAC,CAAC,GAAG,CAAC,GAAG,CAAC,CAAC,CAAC,EAAE,IAAI,CAAC,CAAC,CAAC;iBAChE;aACJ;SACJ;QACD,OAAO,IAAI,MAAM,CAAC,MAAM,CAAC,CAAC,GAAG,MAAM,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;KAClD;IAED,MAAM,IAAI,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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/binary.d.ts b/igv_component/node_modules/apache-arrow/fb/binary.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6476954aba43c3412ecd88a590ad88bb776b9ec1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/binary.d.ts
@@ -0,0 +1,14 @@
+import * as flatbuffers from 'flatbuffers';
+/**
+ * Opaque binary data
+ */
+export declare class Binary {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Binary;
+    static getRootAsBinary(bb: flatbuffers.ByteBuffer, obj?: Binary): Binary;
+    static getSizePrefixedRootAsBinary(bb: flatbuffers.ByteBuffer, obj?: Binary): Binary;
+    static startBinary(builder: flatbuffers.Builder): void;
+    static endBinary(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createBinary(builder: flatbuffers.Builder): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/binary.d.ts.map b/igv_component/node_modules/apache-arrow/fb/binary.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..30839c107f0abe5a38bdeb89c945af4f1f0ddacb
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/binary.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/binary.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;GAEG;AACH,qBAAa,MAAM;IACjB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,MAAM;IAMlD,MAAM,CAAC,eAAe,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,MAAM,GAAE,MAAM;IAIrE,MAAM,CAAC,2BAA2B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,MAAM,GAAE,MAAM;IAKjF,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI9C,MAAM,CAAC,SAAS,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKhE,MAAM,CAAC,YAAY,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;CAIlE","file":"binary.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/binary.js b/igv_component/node_modules/apache-arrow/fb/binary.js
new file mode 100644
index 0000000000000000000000000000000000000000..8cf61e17140e7b434269554cfec03f5eefe6d54e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/binary.js
@@ -0,0 +1,41 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Binary = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+/**
+ * Opaque binary data
+ */
+class Binary {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsBinary(bb, obj) {
+        return (obj || new Binary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsBinary(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Binary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startBinary(builder) {
+        builder.startObject(0);
+    }
+    static endBinary(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createBinary(builder) {
+        Binary.startBinary(builder);
+        return Binary.endBinary(builder);
+    }
+}
+exports.Binary = Binary;
+
+//# sourceMappingURL=binary.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/binary.js.map b/igv_component/node_modules/apache-arrow/fb/binary.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..4fa2556fc0c5869b43f5fcdf3e4e3d36187dd773
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/binary.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/binary.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C;;GAEG;AACH,MAAa,MAAM;IAAnB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,EAAyB,EAAE,GAAW;QAC3D,OAAO,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACvF,CAAC;IAED,MAAM,CAAC,2BAA2B,CAAC,EAAyB,EAAE,GAAW;QACvE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACvF,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B;QAC5C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B;QAC7C,MAAM,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;QAC5B,OAAO,MAAM,CAAC,SAAS,CAAC,OAAO,CAAC,CAAC;IACnC,CAAC;CACA;AA/BD,wBA+BC","file":"binary.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/binary.mjs b/igv_component/node_modules/apache-arrow/fb/binary.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..083d097a52e35ba989a5482ed87d1537426c5540
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/binary.mjs
@@ -0,0 +1,36 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+/**
+ * Opaque binary data
+ */
+export class Binary {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsBinary(bb, obj) {
+        return (obj || new Binary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsBinary(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Binary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startBinary(builder) {
+        builder.startObject(0);
+    }
+    static endBinary(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createBinary(builder) {
+        Binary.startBinary(builder);
+        return Binary.endBinary(builder);
+    }
+}
+
+//# sourceMappingURL=binary.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/binary.mjs.map b/igv_component/node_modules/apache-arrow/fb/binary.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..abffc695c637ce3d108a2c50655a4c0734ce967c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/binary.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/binary.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;GAEG;AACH,MAAM,OAAO,MAAM;IAAnB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,EAAyB,EAAE,GAAW;QAC3D,OAAO,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACvF,CAAC;IAED,MAAM,CAAC,2BAA2B,CAAC,EAAyB,EAAE,GAAW;QACvE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACvF,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B;QAC5C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B;QAC7C,MAAM,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;QAC5B,OAAO,MAAM,CAAC,SAAS,CAAC,OAAO,CAAC,CAAC;IACnC,CAAC;CACA","file":"binary.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/block.d.ts b/igv_component/node_modules/apache-arrow/fb/block.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6ac5f212eed86b8aa0ac69288525f7433ec54ae8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/block.d.ts
@@ -0,0 +1,21 @@
+import * as flatbuffers from 'flatbuffers';
+export declare class Block {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Block;
+    /**
+     * Index to the start of the RecordBlock (note this is past the Message header)
+     */
+    offset(): flatbuffers.Long;
+    /**
+     * Length of the metadata
+     */
+    metaDataLength(): number;
+    /**
+     * Length of the data (this is aligned so there can be a gap between this and
+     * the metadata).
+     */
+    bodyLength(): flatbuffers.Long;
+    static sizeOf(): number;
+    static createBlock(builder: flatbuffers.Builder, offset: flatbuffers.Long, metaDataLength: number, bodyLength: flatbuffers.Long): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/block.d.ts.map b/igv_component/node_modules/apache-arrow/fb/block.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..7a38236c6185a451de1b377d0a2c3f82ef9cf221
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/block.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/block.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,qBAAa,KAAK;IAChB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,KAAK;IAMjD;;OAEG;IACH,MAAM,IAAG,WAAW,CAAC,IAAI;IAIzB;;OAEG;IACH,cAAc,IAAG,MAAM;IAIvB;;;OAGG;IACH,UAAU,IAAG,WAAW,CAAC,IAAI;IAI7B,MAAM,CAAC,MAAM,IAAG,MAAM;IAItB,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,MAAM,EAAE,WAAW,CAAC,IAAI,EAAE,cAAc,EAAE,MAAM,EAAE,UAAU,EAAE,WAAW,CAAC,IAAI,GAAE,WAAW,CAAC,MAAM;CASjJ","file":"block.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/block.js b/igv_component/node_modules/apache-arrow/fb/block.js
new file mode 100644
index 0000000000000000000000000000000000000000..14ff382d630d97479f8806e25640e4d79560f671
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/block.js
@@ -0,0 +1,48 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Block = void 0;
+class Block {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    /**
+     * Index to the start of the RecordBlock (note this is past the Message header)
+     */
+    offset() {
+        return this.bb.readInt64(this.bb_pos);
+    }
+    /**
+     * Length of the metadata
+     */
+    metaDataLength() {
+        return this.bb.readInt32(this.bb_pos + 8);
+    }
+    /**
+     * Length of the data (this is aligned so there can be a gap between this and
+     * the metadata).
+     */
+    bodyLength() {
+        return this.bb.readInt64(this.bb_pos + 16);
+    }
+    static sizeOf() {
+        return 24;
+    }
+    static createBlock(builder, offset, metaDataLength, bodyLength) {
+        builder.prep(8, 24);
+        builder.writeInt64(bodyLength);
+        builder.pad(4);
+        builder.writeInt32(metaDataLength);
+        builder.writeInt64(offset);
+        return builder.offset();
+    }
+}
+exports.Block = Block;
+
+//# sourceMappingURL=block.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/block.js.map b/igv_component/node_modules/apache-arrow/fb/block.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..4c3a494c12ea32b43ec0edfd0bd9c2d874427147
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/block.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/block.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAIrE,MAAa,KAAK;IAAlB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA0Cb,CAAC;IAzCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED;;OAEG;IACH,MAAM;QACJ,OAAO,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,CAAC,CAAC;IACzC,CAAC;IAED;;OAEG;IACH,cAAc;QACZ,OAAO,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;IAC7C,CAAC;IAED;;;OAGG;IACH,UAAU;QACR,OAAO,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,EAAE,CAAC,CAAC;IAC9C,CAAC;IAED,MAAM,CAAC,MAAM;QACX,OAAO,EAAE,CAAC;IACZ,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,MAAwB,EAAE,cAAsB,EAAE,UAA4B;QAC5H,OAAO,CAAC,IAAI,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC;QACpB,OAAO,CAAC,UAAU,CAAC,UAAU,CAAC,CAAC;QAC/B,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;QACf,OAAO,CAAC,UAAU,CAAC,cAAc,CAAC,CAAC;QACnC,OAAO,CAAC,UAAU,CAAC,MAAM,CAAC,CAAC;QAC3B,OAAO,OAAO,CAAC,MAAM,EAAE,CAAC;IAC1B,CAAC;CAEA;AA5CD,sBA4CC","file":"block.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/block.mjs b/igv_component/node_modules/apache-arrow/fb/block.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..e464546d1d0bca56306282d4594e935b46278299
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/block.mjs
@@ -0,0 +1,44 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+export class Block {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    /**
+     * Index to the start of the RecordBlock (note this is past the Message header)
+     */
+    offset() {
+        return this.bb.readInt64(this.bb_pos);
+    }
+    /**
+     * Length of the metadata
+     */
+    metaDataLength() {
+        return this.bb.readInt32(this.bb_pos + 8);
+    }
+    /**
+     * Length of the data (this is aligned so there can be a gap between this and
+     * the metadata).
+     */
+    bodyLength() {
+        return this.bb.readInt64(this.bb_pos + 16);
+    }
+    static sizeOf() {
+        return 24;
+    }
+    static createBlock(builder, offset, metaDataLength, bodyLength) {
+        builder.prep(8, 24);
+        builder.writeInt64(bodyLength);
+        builder.pad(4);
+        builder.writeInt32(metaDataLength);
+        builder.writeInt64(offset);
+        return builder.offset();
+    }
+}
+
+//# sourceMappingURL=block.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/block.mjs.map b/igv_component/node_modules/apache-arrow/fb/block.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..6eb9da097567f1c39fe59af2ab44823b4286b33f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/block.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/block.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAIrE,MAAM,OAAO,KAAK;IAAlB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA0Cb,CAAC;IAzCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED;;OAEG;IACH,MAAM;QACJ,OAAO,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,CAAC,CAAC;IACzC,CAAC;IAED;;OAEG;IACH,cAAc;QACZ,OAAO,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;IAC7C,CAAC;IAED;;;OAGG;IACH,UAAU;QACR,OAAO,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,EAAE,CAAC,CAAC;IAC9C,CAAC;IAED,MAAM,CAAC,MAAM;QACX,OAAO,EAAE,CAAC;IACZ,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,MAAwB,EAAE,cAAsB,EAAE,UAA4B;QAC5H,OAAO,CAAC,IAAI,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC;QACpB,OAAO,CAAC,UAAU,CAAC,UAAU,CAAC,CAAC;QAC/B,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;QACf,OAAO,CAAC,UAAU,CAAC,cAAc,CAAC,CAAC;QACnC,OAAO,CAAC,UAAU,CAAC,MAAM,CAAC,CAAC;QAC3B,OAAO,OAAO,CAAC,MAAM,EAAE,CAAC;IAC1B,CAAC;CAEA","file":"block.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/body-compression-method.d.ts b/igv_component/node_modules/apache-arrow/fb/body-compression-method.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2261f20282098368460f2bf88536e6b3ec369f01
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/body-compression-method.d.ts
@@ -0,0 +1,17 @@
+/**
+ * Provided for forward compatibility in case we need to support different
+ * strategies for compressing the IPC message body (like whole-body
+ * compression rather than buffer-level) in the future
+ */
+export declare enum BodyCompressionMethod {
+    /**
+     * Each constituent buffer is first compressed with the indicated
+     * compressor, and then written with the uncompressed length in the first 8
+     * bytes as a 64-bit little-endian signed integer followed by the compressed
+     * buffer bytes (and then padding as required by the protocol). The
+     * uncompressed length may be set to -1 to indicate that the data that
+     * follows is not compressed, which can be useful for cases where
+     * compression does not yield appreciable savings.
+     */
+    BUFFER = 0
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/body-compression-method.d.ts.map b/igv_component/node_modules/apache-arrow/fb/body-compression-method.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..fa7a9f10c81dfe10c7d812de481e41b46a945d6a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/body-compression-method.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/body-compression-method.ts"],"names":[],"mappings":"AAEA;;;;GAIG;AACH,oBAAY,qBAAqB;IAC/B;;;;;;;;OAQG;IACH,MAAM,IAAI;CACX","file":"body-compression-method.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/body-compression-method.js b/igv_component/node_modules/apache-arrow/fb/body-compression-method.js
new file mode 100644
index 0000000000000000000000000000000000000000..547200aad250b55c432eef31cfc2a1c7acd376a5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/body-compression-method.js
@@ -0,0 +1,24 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.BodyCompressionMethod = void 0;
+/**
+ * Provided for forward compatibility in case we need to support different
+ * strategies for compressing the IPC message body (like whole-body
+ * compression rather than buffer-level) in the future
+ */
+var BodyCompressionMethod;
+(function (BodyCompressionMethod) {
+    /**
+     * Each constituent buffer is first compressed with the indicated
+     * compressor, and then written with the uncompressed length in the first 8
+     * bytes as a 64-bit little-endian signed integer followed by the compressed
+     * buffer bytes (and then padding as required by the protocol). The
+     * uncompressed length may be set to -1 to indicate that the data that
+     * follows is not compressed, which can be useful for cases where
+     * compression does not yield appreciable savings.
+     */
+    BodyCompressionMethod[BodyCompressionMethod["BUFFER"] = 0] = "BUFFER";
+})(BodyCompressionMethod = exports.BodyCompressionMethod || (exports.BodyCompressionMethod = {}));
+
+//# sourceMappingURL=body-compression-method.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/body-compression-method.js.map b/igv_component/node_modules/apache-arrow/fb/body-compression-method.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..9a3cc601a60ad74f8f03fe335ab5ddea52d1e73a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/body-compression-method.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/body-compression-method.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAErE;;;;GAIG;AACH,IAAY,qBAWX;AAXD,WAAY,qBAAqB;IAC/B;;;;;;;;OAQG;IACH,qEAAU,CAAA;AACZ,CAAC,EAXW,qBAAqB,GAArB,6BAAqB,KAArB,6BAAqB,QAWhC","file":"body-compression-method.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/body-compression-method.mjs b/igv_component/node_modules/apache-arrow/fb/body-compression-method.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..afe72b4bc865f4c42c47f3cd687f2ca511d5fd98
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/body-compression-method.mjs
@@ -0,0 +1,21 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+/**
+ * Provided for forward compatibility in case we need to support different
+ * strategies for compressing the IPC message body (like whole-body
+ * compression rather than buffer-level) in the future
+ */
+export var BodyCompressionMethod;
+(function (BodyCompressionMethod) {
+    /**
+     * Each constituent buffer is first compressed with the indicated
+     * compressor, and then written with the uncompressed length in the first 8
+     * bytes as a 64-bit little-endian signed integer followed by the compressed
+     * buffer bytes (and then padding as required by the protocol). The
+     * uncompressed length may be set to -1 to indicate that the data that
+     * follows is not compressed, which can be useful for cases where
+     * compression does not yield appreciable savings.
+     */
+    BodyCompressionMethod[BodyCompressionMethod["BUFFER"] = 0] = "BUFFER";
+})(BodyCompressionMethod || (BodyCompressionMethod = {}));
+
+//# sourceMappingURL=body-compression-method.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/body-compression-method.mjs.map b/igv_component/node_modules/apache-arrow/fb/body-compression-method.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..bb2752d09e747f221c839af4bb533aaf17e9236f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/body-compression-method.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/body-compression-method.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE;;;;GAIG;AACH,MAAM,CAAN,IAAY,qBAWX;AAXD,WAAY,qBAAqB;IAC/B;;;;;;;;OAQG;IACH,qEAAU,CAAA;AACZ,CAAC,EAXW,qBAAqB,KAArB,qBAAqB,QAWhC","file":"body-compression-method.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/body-compression.d.ts b/igv_component/node_modules/apache-arrow/fb/body-compression.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..01fde9c468b0e85198b9b18c747de1a8ce5b0a74
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/body-compression.d.ts
@@ -0,0 +1,29 @@
+import * as flatbuffers from 'flatbuffers';
+import { BodyCompressionMethod } from './body-compression-method.js';
+import { CompressionType } from './compression-type.js';
+/**
+ * Optional compression for the memory buffers constituting IPC message
+ * bodies. Intended for use with RecordBatch but could be used for other
+ * message types
+ */
+export declare class BodyCompression {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): BodyCompression;
+    static getRootAsBodyCompression(bb: flatbuffers.ByteBuffer, obj?: BodyCompression): BodyCompression;
+    static getSizePrefixedRootAsBodyCompression(bb: flatbuffers.ByteBuffer, obj?: BodyCompression): BodyCompression;
+    /**
+     * Compressor library.
+     * For LZ4_FRAME, each compressed buffer must consist of a single frame.
+     */
+    codec(): CompressionType;
+    /**
+     * Indicates the way the record batch body was compressed
+     */
+    method(): BodyCompressionMethod;
+    static startBodyCompression(builder: flatbuffers.Builder): void;
+    static addCodec(builder: flatbuffers.Builder, codec: CompressionType): void;
+    static addMethod(builder: flatbuffers.Builder, method: BodyCompressionMethod): void;
+    static endBodyCompression(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createBodyCompression(builder: flatbuffers.Builder, codec: CompressionType, method: BodyCompressionMethod): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/body-compression.d.ts.map b/igv_component/node_modules/apache-arrow/fb/body-compression.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..0a4e2126d0084c9739df2840c62a4ebb230b6121
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/body-compression.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/body-compression.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,qBAAqB,EAAE,MAAM,8BAA8B,CAAC;AACrE,OAAO,EAAE,eAAe,EAAE,MAAM,uBAAuB,CAAC;AAGxD;;;;GAIG;AACH,qBAAa,eAAe;IAC1B,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,eAAe;IAM3D,MAAM,CAAC,wBAAwB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,eAAe,GAAE,eAAe;IAIhG,MAAM,CAAC,oCAAoC,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,eAAe,GAAE,eAAe;IAK5G;;;OAGG;IACH,KAAK,IAAG,eAAe;IAKvB;;OAEG;IACH,MAAM,IAAG,qBAAqB;IAK9B,MAAM,CAAC,oBAAoB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAIvD,MAAM,CAAC,QAAQ,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,KAAK,EAAC,eAAe;IAIlE,MAAM,CAAC,SAAS,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,MAAM,EAAC,qBAAqB;IAI1E,MAAM,CAAC,kBAAkB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKzE,MAAM,CAAC,qBAAqB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,KAAK,EAAC,eAAe,EAAE,MAAM,EAAC,qBAAqB,GAAE,WAAW,CAAC,MAAM;CAMhI","file":"body-compression.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/body-compression.js b/igv_component/node_modules/apache-arrow/fb/body-compression.js
new file mode 100644
index 0000000000000000000000000000000000000000..d5c8863382562f04391f3bc35331571a40e1da16
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/body-compression.js
@@ -0,0 +1,68 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.BodyCompression = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const body_compression_method_js_1 = require("./body-compression-method.js");
+const compression_type_js_1 = require("./compression-type.js");
+/**
+ * Optional compression for the memory buffers constituting IPC message
+ * bodies. Intended for use with RecordBatch but could be used for other
+ * message types
+ */
+class BodyCompression {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsBodyCompression(bb, obj) {
+        return (obj || new BodyCompression()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsBodyCompression(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new BodyCompression()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * Compressor library.
+     * For LZ4_FRAME, each compressed buffer must consist of a single frame.
+     */
+    codec() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt8(this.bb_pos + offset) : compression_type_js_1.CompressionType.LZ4_FRAME;
+    }
+    /**
+     * Indicates the way the record batch body was compressed
+     */
+    method() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.readInt8(this.bb_pos + offset) : body_compression_method_js_1.BodyCompressionMethod.BUFFER;
+    }
+    static startBodyCompression(builder) {
+        builder.startObject(2);
+    }
+    static addCodec(builder, codec) {
+        builder.addFieldInt8(0, codec, compression_type_js_1.CompressionType.LZ4_FRAME);
+    }
+    static addMethod(builder, method) {
+        builder.addFieldInt8(1, method, body_compression_method_js_1.BodyCompressionMethod.BUFFER);
+    }
+    static endBodyCompression(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createBodyCompression(builder, codec, method) {
+        BodyCompression.startBodyCompression(builder);
+        BodyCompression.addCodec(builder, codec);
+        BodyCompression.addMethod(builder, method);
+        return BodyCompression.endBodyCompression(builder);
+    }
+}
+exports.BodyCompression = BodyCompression;
+
+//# sourceMappingURL=body-compression.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/body-compression.js.map b/igv_component/node_modules/apache-arrow/fb/body-compression.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..9f52574827cb6540b9de2f44a87c34a5bd11c531
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/body-compression.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/body-compression.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,6EAAqE;AACrE,+DAAwD;AAGxD;;;;GAIG;AACH,MAAa,eAAe;IAA5B;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAwDb,CAAC;IAvDD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,wBAAwB,CAAC,EAAyB,EAAE,GAAoB;QAC7E,OAAO,CAAC,GAAG,IAAI,IAAI,eAAe,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAChG,CAAC;IAED,MAAM,CAAC,oCAAoC,CAAC,EAAyB,EAAE,GAAoB;QACzF,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,eAAe,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAChG,CAAC;IAED;;;OAGG;IACH,KAAK;QACH,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,qCAAe,CAAC,SAAS,CAAC;IACtF,CAAC;IAED;;OAEG;IACH,MAAM;QACJ,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,kDAAqB,CAAC,MAAM,CAAC;IACzF,CAAC;IAED,MAAM,CAAC,oBAAoB,CAAC,OAA2B;QACrD,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,QAAQ,CAAC,OAA2B,EAAE,KAAqB;QAChE,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,KAAK,EAAE,qCAAe,CAAC,SAAS,CAAC,CAAC;IAC5D,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B,EAAE,MAA4B;QACxE,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,MAAM,EAAE,kDAAqB,CAAC,MAAM,CAAC,CAAC;IAChE,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B;QACnD,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,qBAAqB,CAAC,OAA2B,EAAE,KAAqB,EAAE,MAA4B;QAC3G,eAAe,CAAC,oBAAoB,CAAC,OAAO,CAAC,CAAC;QAC9C,eAAe,CAAC,QAAQ,CAAC,OAAO,EAAE,KAAK,CAAC,CAAC;QACzC,eAAe,CAAC,SAAS,CAAC,OAAO,EAAE,MAAM,CAAC,CAAC;QAC3C,OAAO,eAAe,CAAC,kBAAkB,CAAC,OAAO,CAAC,CAAC;IACrD,CAAC;CACA;AA1DD,0CA0DC","file":"body-compression.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/body-compression.mjs b/igv_component/node_modules/apache-arrow/fb/body-compression.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..d68c9f8605caf32a504a9ca85d7be096ddda8e5d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/body-compression.mjs
@@ -0,0 +1,63 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { BodyCompressionMethod } from './body-compression-method.mjs';
+import { CompressionType } from './compression-type.mjs';
+/**
+ * Optional compression for the memory buffers constituting IPC message
+ * bodies. Intended for use with RecordBatch but could be used for other
+ * message types
+ */
+export class BodyCompression {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsBodyCompression(bb, obj) {
+        return (obj || new BodyCompression()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsBodyCompression(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new BodyCompression()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * Compressor library.
+     * For LZ4_FRAME, each compressed buffer must consist of a single frame.
+     */
+    codec() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt8(this.bb_pos + offset) : CompressionType.LZ4_FRAME;
+    }
+    /**
+     * Indicates the way the record batch body was compressed
+     */
+    method() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.readInt8(this.bb_pos + offset) : BodyCompressionMethod.BUFFER;
+    }
+    static startBodyCompression(builder) {
+        builder.startObject(2);
+    }
+    static addCodec(builder, codec) {
+        builder.addFieldInt8(0, codec, CompressionType.LZ4_FRAME);
+    }
+    static addMethod(builder, method) {
+        builder.addFieldInt8(1, method, BodyCompressionMethod.BUFFER);
+    }
+    static endBodyCompression(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createBodyCompression(builder, codec, method) {
+        BodyCompression.startBodyCompression(builder);
+        BodyCompression.addCodec(builder, codec);
+        BodyCompression.addMethod(builder, method);
+        return BodyCompression.endBodyCompression(builder);
+    }
+}
+
+//# sourceMappingURL=body-compression.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/body-compression.mjs.map b/igv_component/node_modules/apache-arrow/fb/body-compression.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..1090f2c1c741ec0dbb6fcbe125ab80612a3aa326
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/body-compression.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/body-compression.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,qBAAqB,EAAE,MAAM,8BAA8B,CAAC;AACrE,OAAO,EAAE,eAAe,EAAE,MAAM,uBAAuB,CAAC;AAGxD;;;;GAIG;AACH,MAAM,OAAO,eAAe;IAA5B;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAwDb,CAAC;IAvDD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,wBAAwB,CAAC,EAAyB,EAAE,GAAoB;QAC7E,OAAO,CAAC,GAAG,IAAI,IAAI,eAAe,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAChG,CAAC;IAED,MAAM,CAAC,oCAAoC,CAAC,EAAyB,EAAE,GAAoB;QACzF,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,eAAe,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAChG,CAAC;IAED;;;OAGG;IACH,KAAK;QACH,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,eAAe,CAAC,SAAS,CAAC;IACtF,CAAC;IAED;;OAEG;IACH,MAAM;QACJ,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,qBAAqB,CAAC,MAAM,CAAC;IACzF,CAAC;IAED,MAAM,CAAC,oBAAoB,CAAC,OAA2B;QACrD,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,QAAQ,CAAC,OAA2B,EAAE,KAAqB;QAChE,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,KAAK,EAAE,eAAe,CAAC,SAAS,CAAC,CAAC;IAC5D,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B,EAAE,MAA4B;QACxE,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,MAAM,EAAE,qBAAqB,CAAC,MAAM,CAAC,CAAC;IAChE,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B;QACnD,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,qBAAqB,CAAC,OAA2B,EAAE,KAAqB,EAAE,MAA4B;QAC3G,eAAe,CAAC,oBAAoB,CAAC,OAAO,CAAC,CAAC;QAC9C,eAAe,CAAC,QAAQ,CAAC,OAAO,EAAE,KAAK,CAAC,CAAC;QACzC,eAAe,CAAC,SAAS,CAAC,OAAO,EAAE,MAAM,CAAC,CAAC;QAC3C,OAAO,eAAe,CAAC,kBAAkB,CAAC,OAAO,CAAC,CAAC;IACrD,CAAC;CACA","file":"body-compression.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/bool.d.ts b/igv_component/node_modules/apache-arrow/fb/bool.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6854f5415edea3e3fc28dd16ce3f2fa5a14d9291
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/bool.d.ts
@@ -0,0 +1,11 @@
+import * as flatbuffers from 'flatbuffers';
+export declare class Bool {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Bool;
+    static getRootAsBool(bb: flatbuffers.ByteBuffer, obj?: Bool): Bool;
+    static getSizePrefixedRootAsBool(bb: flatbuffers.ByteBuffer, obj?: Bool): Bool;
+    static startBool(builder: flatbuffers.Builder): void;
+    static endBool(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createBool(builder: flatbuffers.Builder): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/bool.d.ts.map b/igv_component/node_modules/apache-arrow/fb/bool.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..91ada5abec4aefc726ebc75f6979f01c6fdce436
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/bool.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/bool.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,qBAAa,IAAI;IACf,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,IAAI;IAMhD,MAAM,CAAC,aAAa,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,IAAI,GAAE,IAAI;IAI/D,MAAM,CAAC,yBAAyB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,IAAI,GAAE,IAAI;IAK3E,MAAM,CAAC,SAAS,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI5C,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAK9D,MAAM,CAAC,UAAU,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;CAIhE","file":"bool.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/bool.js b/igv_component/node_modules/apache-arrow/fb/bool.js
new file mode 100644
index 0000000000000000000000000000000000000000..0ef84157db3f30a7a4e74becbd7a2d212544ada0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/bool.js
@@ -0,0 +1,38 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Bool = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+class Bool {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsBool(bb, obj) {
+        return (obj || new Bool()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsBool(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Bool()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startBool(builder) {
+        builder.startObject(0);
+    }
+    static endBool(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createBool(builder) {
+        Bool.startBool(builder);
+        return Bool.endBool(builder);
+    }
+}
+exports.Bool = Bool;
+
+//# sourceMappingURL=bool.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/bool.js.map b/igv_component/node_modules/apache-arrow/fb/bool.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..f3069b17a2c367341fe861d103827ca2e3f6b1a7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/bool.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/bool.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,MAAa,IAAI;IAAjB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,EAAyB,EAAE,GAAS;QACvD,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,EAAyB,EAAE,GAAS;QACnE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B;QACxC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B;QAC3C,IAAI,CAAC,SAAS,CAAC,OAAO,CAAC,CAAC;QACxB,OAAO,IAAI,CAAC,OAAO,CAAC,OAAO,CAAC,CAAC;IAC/B,CAAC;CACA;AA/BD,oBA+BC","file":"bool.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/bool.mjs b/igv_component/node_modules/apache-arrow/fb/bool.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..fb48c1664a090ad5de533118da67905b793342a2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/bool.mjs
@@ -0,0 +1,33 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+export class Bool {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsBool(bb, obj) {
+        return (obj || new Bool()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsBool(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Bool()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startBool(builder) {
+        builder.startObject(0);
+    }
+    static endBool(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createBool(builder) {
+        Bool.startBool(builder);
+        return Bool.endBool(builder);
+    }
+}
+
+//# sourceMappingURL=bool.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/bool.mjs.map b/igv_component/node_modules/apache-arrow/fb/bool.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..b4bdf6ccdac51df728cae2f1950f577c40837422
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/bool.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/bool.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,MAAM,OAAO,IAAI;IAAjB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,EAAyB,EAAE,GAAS;QACvD,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,EAAyB,EAAE,GAAS;QACnE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B;QACxC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B;QAC3C,IAAI,CAAC,SAAS,CAAC,OAAO,CAAC,CAAC;QACxB,OAAO,IAAI,CAAC,OAAO,CAAC,OAAO,CAAC,CAAC;IAC/B,CAAC;CACA","file":"bool.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/buffer.d.ts b/igv_component/node_modules/apache-arrow/fb/buffer.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..92115256ebc368210298227559ab1d75ca82bd31
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/buffer.d.ts
@@ -0,0 +1,25 @@
+import * as flatbuffers from 'flatbuffers';
+/**
+ * ----------------------------------------------------------------------
+ * A Buffer represents a single contiguous memory segment
+ */
+export declare class Buffer {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Buffer;
+    /**
+     * The relative offset into the shared memory page where the bytes for this
+     * buffer starts
+     */
+    offset(): flatbuffers.Long;
+    /**
+     * The absolute length (in bytes) of the memory buffer. The memory is found
+     * from offset (inclusive) to offset + length (non-inclusive). When building
+     * messages using the encapsulated IPC message, padding bytes may be written
+     * after a buffer, but such padding bytes do not need to be accounted for in
+     * the size here.
+     */
+    length(): flatbuffers.Long;
+    static sizeOf(): number;
+    static createBuffer(builder: flatbuffers.Builder, offset: flatbuffers.Long, length: flatbuffers.Long): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/buffer.d.ts.map b/igv_component/node_modules/apache-arrow/fb/buffer.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..0e2b93b329d5fce72ad7d6d8a326a63c1a554656
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/buffer.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/buffer.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;GAGG;AACH,qBAAa,MAAM;IACjB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,MAAM;IAMlD;;;OAGG;IACH,MAAM,IAAG,WAAW,CAAC,IAAI;IAIzB;;;;;;OAMG;IACH,MAAM,IAAG,WAAW,CAAC,IAAI;IAIzB,MAAM,CAAC,MAAM,IAAG,MAAM;IAItB,MAAM,CAAC,YAAY,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,MAAM,EAAE,WAAW,CAAC,IAAI,EAAE,MAAM,EAAE,WAAW,CAAC,IAAI,GAAE,WAAW,CAAC,MAAM;CAOtH","file":"buffer.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/buffer.js b/igv_component/node_modules/apache-arrow/fb/buffer.js
new file mode 100644
index 0000000000000000000000000000000000000000..24502d11f573cf43a63c066d3f3c87d0ba003286
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/buffer.js
@@ -0,0 +1,48 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Buffer = void 0;
+/**
+ * ----------------------------------------------------------------------
+ * A Buffer represents a single contiguous memory segment
+ */
+class Buffer {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    /**
+     * The relative offset into the shared memory page where the bytes for this
+     * buffer starts
+     */
+    offset() {
+        return this.bb.readInt64(this.bb_pos);
+    }
+    /**
+     * The absolute length (in bytes) of the memory buffer. The memory is found
+     * from offset (inclusive) to offset + length (non-inclusive). When building
+     * messages using the encapsulated IPC message, padding bytes may be written
+     * after a buffer, but such padding bytes do not need to be accounted for in
+     * the size here.
+     */
+    length() {
+        return this.bb.readInt64(this.bb_pos + 8);
+    }
+    static sizeOf() {
+        return 16;
+    }
+    static createBuffer(builder, offset, length) {
+        builder.prep(8, 16);
+        builder.writeInt64(length);
+        builder.writeInt64(offset);
+        return builder.offset();
+    }
+}
+exports.Buffer = Buffer;
+
+//# sourceMappingURL=buffer.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/buffer.js.map b/igv_component/node_modules/apache-arrow/fb/buffer.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..650ce16f04ae18de8d6a44eacf09a6c0e14c0928
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/buffer.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/buffer.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAIrE;;;GAGG;AACH,MAAa,MAAM;IAAnB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAqCb,CAAC;IApCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED;;;OAGG;IACH,MAAM;QACJ,OAAO,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,CAAC,CAAC;IACzC,CAAC;IAED;;;;;;OAMG;IACH,MAAM;QACJ,OAAO,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;IAC7C,CAAC;IAED,MAAM,CAAC,MAAM;QACX,OAAO,EAAE,CAAC;IACZ,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B,EAAE,MAAwB,EAAE,MAAwB;QACjG,OAAO,CAAC,IAAI,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC;QACpB,OAAO,CAAC,UAAU,CAAC,MAAM,CAAC,CAAC;QAC3B,OAAO,CAAC,UAAU,CAAC,MAAM,CAAC,CAAC;QAC3B,OAAO,OAAO,CAAC,MAAM,EAAE,CAAC;IAC1B,CAAC;CAEA;AAvCD,wBAuCC","file":"buffer.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/buffer.mjs b/igv_component/node_modules/apache-arrow/fb/buffer.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..a7b24544667fb53af0554a1d541b7fe3facbd17c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/buffer.mjs
@@ -0,0 +1,44 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+/**
+ * ----------------------------------------------------------------------
+ * A Buffer represents a single contiguous memory segment
+ */
+export class Buffer {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    /**
+     * The relative offset into the shared memory page where the bytes for this
+     * buffer starts
+     */
+    offset() {
+        return this.bb.readInt64(this.bb_pos);
+    }
+    /**
+     * The absolute length (in bytes) of the memory buffer. The memory is found
+     * from offset (inclusive) to offset + length (non-inclusive). When building
+     * messages using the encapsulated IPC message, padding bytes may be written
+     * after a buffer, but such padding bytes do not need to be accounted for in
+     * the size here.
+     */
+    length() {
+        return this.bb.readInt64(this.bb_pos + 8);
+    }
+    static sizeOf() {
+        return 16;
+    }
+    static createBuffer(builder, offset, length) {
+        builder.prep(8, 16);
+        builder.writeInt64(length);
+        builder.writeInt64(offset);
+        return builder.offset();
+    }
+}
+
+//# sourceMappingURL=buffer.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/buffer.mjs.map b/igv_component/node_modules/apache-arrow/fb/buffer.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..07b608aa0160316ff753b5b533cefbfc513019bc
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/buffer.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/buffer.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAIrE;;;GAGG;AACH,MAAM,OAAO,MAAM;IAAnB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAqCb,CAAC;IApCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED;;;OAGG;IACH,MAAM;QACJ,OAAO,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,CAAC,CAAC;IACzC,CAAC;IAED;;;;;;OAMG;IACH,MAAM;QACJ,OAAO,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;IAC7C,CAAC;IAED,MAAM,CAAC,MAAM;QACX,OAAO,EAAE,CAAC;IACZ,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B,EAAE,MAAwB,EAAE,MAAwB;QACjG,OAAO,CAAC,IAAI,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC;QACpB,OAAO,CAAC,UAAU,CAAC,MAAM,CAAC,CAAC;QAC3B,OAAO,CAAC,UAAU,CAAC,MAAM,CAAC,CAAC;QAC3B,OAAO,OAAO,CAAC,MAAM,EAAE,CAAC;IAC1B,CAAC;CAEA","file":"buffer.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/compression-type.d.ts b/igv_component/node_modules/apache-arrow/fb/compression-type.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..ecba28c46a8d9b8b1699d9332e689bfc21e32bff
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/compression-type.d.ts
@@ -0,0 +1,4 @@
+export declare enum CompressionType {
+    LZ4_FRAME = 0,
+    ZSTD = 1
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/compression-type.d.ts.map b/igv_component/node_modules/apache-arrow/fb/compression-type.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..84d14ad88c6b1a3675dcaa1b91fd3d88b88cce12
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/compression-type.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/compression-type.ts"],"names":[],"mappings":"AAEA,oBAAY,eAAe;IACzB,SAAS,IAAI;IACb,IAAI,IAAI;CACT","file":"compression-type.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/compression-type.js b/igv_component/node_modules/apache-arrow/fb/compression-type.js
new file mode 100644
index 0000000000000000000000000000000000000000..98abd671843367d7dc0ac4c41aac8a63428830f6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/compression-type.js
@@ -0,0 +1,11 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.CompressionType = void 0;
+var CompressionType;
+(function (CompressionType) {
+    CompressionType[CompressionType["LZ4_FRAME"] = 0] = "LZ4_FRAME";
+    CompressionType[CompressionType["ZSTD"] = 1] = "ZSTD";
+})(CompressionType = exports.CompressionType || (exports.CompressionType = {}));
+
+//# sourceMappingURL=compression-type.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/compression-type.js.map b/igv_component/node_modules/apache-arrow/fb/compression-type.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..fa8eeb38cfa8dee0aee32b53bca338462dcae546
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/compression-type.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/compression-type.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAErE,IAAY,eAGX;AAHD,WAAY,eAAe;IACzB,+DAAa,CAAA;IACb,qDAAQ,CAAA;AACV,CAAC,EAHW,eAAe,GAAf,uBAAe,KAAf,uBAAe,QAG1B","file":"compression-type.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/compression-type.mjs b/igv_component/node_modules/apache-arrow/fb/compression-type.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..575f5109c39175ed60e9f98a7e18eab51d90ff49
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/compression-type.mjs
@@ -0,0 +1,8 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+export var CompressionType;
+(function (CompressionType) {
+    CompressionType[CompressionType["LZ4_FRAME"] = 0] = "LZ4_FRAME";
+    CompressionType[CompressionType["ZSTD"] = 1] = "ZSTD";
+})(CompressionType || (CompressionType = {}));
+
+//# sourceMappingURL=compression-type.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/compression-type.mjs.map b/igv_component/node_modules/apache-arrow/fb/compression-type.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..d1962a3ee8fdc5857a966daffdb9536fc3673625
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/compression-type.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/compression-type.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,MAAM,CAAN,IAAY,eAGX;AAHD,WAAY,eAAe;IACzB,+DAAa,CAAA;IACb,qDAAQ,CAAA;AACV,CAAC,EAHW,eAAe,KAAf,eAAe,QAG1B","file":"compression-type.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/date-unit.d.ts b/igv_component/node_modules/apache-arrow/fb/date-unit.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..47e2c1b7052fe73cfda17b905548335dae5c9157
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/date-unit.d.ts
@@ -0,0 +1,4 @@
+export declare enum DateUnit {
+    DAY = 0,
+    MILLISECOND = 1
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/date-unit.d.ts.map b/igv_component/node_modules/apache-arrow/fb/date-unit.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..9d85da8c13627f91b896482fd91dffdae39083d6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/date-unit.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/date-unit.ts"],"names":[],"mappings":"AAEA,oBAAY,QAAQ;IAClB,GAAG,IAAI;IACP,WAAW,IAAI;CAChB","file":"date-unit.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/date-unit.js b/igv_component/node_modules/apache-arrow/fb/date-unit.js
new file mode 100644
index 0000000000000000000000000000000000000000..d929fdae902f3c24717421f1b399b3e47c644b26
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/date-unit.js
@@ -0,0 +1,11 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.DateUnit = void 0;
+var DateUnit;
+(function (DateUnit) {
+    DateUnit[DateUnit["DAY"] = 0] = "DAY";
+    DateUnit[DateUnit["MILLISECOND"] = 1] = "MILLISECOND";
+})(DateUnit = exports.DateUnit || (exports.DateUnit = {}));
+
+//# sourceMappingURL=date-unit.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/date-unit.js.map b/igv_component/node_modules/apache-arrow/fb/date-unit.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..ef3627daddf6327522b5aba6c045587843a058f4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/date-unit.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/date-unit.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAErE,IAAY,QAGX;AAHD,WAAY,QAAQ;IAClB,qCAAO,CAAA;IACP,qDAAe,CAAA;AACjB,CAAC,EAHW,QAAQ,GAAR,gBAAQ,KAAR,gBAAQ,QAGnB","file":"date-unit.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/date-unit.mjs b/igv_component/node_modules/apache-arrow/fb/date-unit.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..b353908b2d3eef18071116c931d60459c94f6eaa
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/date-unit.mjs
@@ -0,0 +1,8 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+export var DateUnit;
+(function (DateUnit) {
+    DateUnit[DateUnit["DAY"] = 0] = "DAY";
+    DateUnit[DateUnit["MILLISECOND"] = 1] = "MILLISECOND";
+})(DateUnit || (DateUnit = {}));
+
+//# sourceMappingURL=date-unit.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/date-unit.mjs.map b/igv_component/node_modules/apache-arrow/fb/date-unit.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..1944b26f60285f9e5c9496fd23efaa12ed700436
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/date-unit.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/date-unit.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,MAAM,CAAN,IAAY,QAGX;AAHD,WAAY,QAAQ;IAClB,qCAAO,CAAA;IACP,qDAAe,CAAA;AACjB,CAAC,EAHW,QAAQ,KAAR,QAAQ,QAGnB","file":"date-unit.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/date.d.ts b/igv_component/node_modules/apache-arrow/fb/date.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..3f48acddbfdf62b9530eb7016bbf6b623be7d0b4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/date.d.ts
@@ -0,0 +1,22 @@
+import * as flatbuffers from 'flatbuffers';
+import { DateUnit } from './date-unit.js';
+/**
+ * Date is either a 32-bit or 64-bit signed integer type representing an
+ * elapsed time since UNIX epoch (1970-01-01), stored in either of two units:
+ *
+ * * Milliseconds (64 bits) indicating UNIX time elapsed since the epoch (no
+ *   leap seconds), where the values are evenly divisible by 86400000
+ * * Days (32 bits) since the UNIX epoch
+ */
+export declare class Date {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Date;
+    static getRootAsDate(bb: flatbuffers.ByteBuffer, obj?: Date): Date;
+    static getSizePrefixedRootAsDate(bb: flatbuffers.ByteBuffer, obj?: Date): Date;
+    unit(): DateUnit;
+    static startDate(builder: flatbuffers.Builder): void;
+    static addUnit(builder: flatbuffers.Builder, unit: DateUnit): void;
+    static endDate(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createDate(builder: flatbuffers.Builder, unit: DateUnit): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/date.d.ts.map b/igv_component/node_modules/apache-arrow/fb/date.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..52e9639b63f724da773083e3283fd3ed2527e53e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/date.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/date.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,QAAQ,EAAE,MAAM,gBAAgB,CAAC;AAG1C;;;;;;;GAOG;AACH,qBAAa,IAAI;IACf,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,IAAI;IAMhD,MAAM,CAAC,aAAa,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,IAAI,GAAE,IAAI;IAI/D,MAAM,CAAC,yBAAyB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,IAAI,GAAE,IAAI;IAK3E,IAAI,IAAG,QAAQ;IAKf,MAAM,CAAC,SAAS,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI5C,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,QAAQ;IAIzD,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAK9D,MAAM,CAAC,UAAU,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,QAAQ,GAAE,WAAW,CAAC,MAAM;CAK/E","file":"date.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/date.js b/igv_component/node_modules/apache-arrow/fb/date.js
new file mode 100644
index 0000000000000000000000000000000000000000..255d0a1881c99c1b97036f6c0914d7f901cf0dea
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/date.js
@@ -0,0 +1,55 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Date = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const date_unit_js_1 = require("./date-unit.js");
+/**
+ * Date is either a 32-bit or 64-bit signed integer type representing an
+ * elapsed time since UNIX epoch (1970-01-01), stored in either of two units:
+ *
+ * * Milliseconds (64 bits) indicating UNIX time elapsed since the epoch (no
+ *   leap seconds), where the values are evenly divisible by 86400000
+ * * Days (32 bits) since the UNIX epoch
+ */
+class Date {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsDate(bb, obj) {
+        return (obj || new Date()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsDate(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Date()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    unit() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : date_unit_js_1.DateUnit.MILLISECOND;
+    }
+    static startDate(builder) {
+        builder.startObject(1);
+    }
+    static addUnit(builder, unit) {
+        builder.addFieldInt16(0, unit, date_unit_js_1.DateUnit.MILLISECOND);
+    }
+    static endDate(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createDate(builder, unit) {
+        Date.startDate(builder);
+        Date.addUnit(builder, unit);
+        return Date.endDate(builder);
+    }
+}
+exports.Date = Date;
+
+//# sourceMappingURL=date.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/date.js.map b/igv_component/node_modules/apache-arrow/fb/date.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..05f9595b140a6ece3597a2bb4cfec202fe9ec79c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/date.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/date.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,iDAA0C;AAG1C;;;;;;;GAOG;AACH,MAAa,IAAI;IAAjB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAuCb,CAAC;IAtCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,EAAyB,EAAE,GAAS;QACvD,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,EAAyB,EAAE,GAAS;QACnE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,IAAI;QACF,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,uBAAQ,CAAC,WAAW,CAAC;IAClF,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,IAAa;QACvD,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,IAAI,EAAE,uBAAQ,CAAC,WAAW,CAAC,CAAC;IACvD,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B;QACxC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B,EAAE,IAAa;QAC1D,IAAI,CAAC,SAAS,CAAC,OAAO,CAAC,CAAC;QACxB,IAAI,CAAC,OAAO,CAAC,OAAO,EAAE,IAAI,CAAC,CAAC;QAC5B,OAAO,IAAI,CAAC,OAAO,CAAC,OAAO,CAAC,CAAC;IAC/B,CAAC;CACA;AAzCD,oBAyCC","file":"date.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/date.mjs b/igv_component/node_modules/apache-arrow/fb/date.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..6e1179a81d5333c8a1ce840d9e570c6ca76d48e7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/date.mjs
@@ -0,0 +1,50 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { DateUnit } from './date-unit.mjs';
+/**
+ * Date is either a 32-bit or 64-bit signed integer type representing an
+ * elapsed time since UNIX epoch (1970-01-01), stored in either of two units:
+ *
+ * * Milliseconds (64 bits) indicating UNIX time elapsed since the epoch (no
+ *   leap seconds), where the values are evenly divisible by 86400000
+ * * Days (32 bits) since the UNIX epoch
+ */
+export class Date {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsDate(bb, obj) {
+        return (obj || new Date()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsDate(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Date()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    unit() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : DateUnit.MILLISECOND;
+    }
+    static startDate(builder) {
+        builder.startObject(1);
+    }
+    static addUnit(builder, unit) {
+        builder.addFieldInt16(0, unit, DateUnit.MILLISECOND);
+    }
+    static endDate(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createDate(builder, unit) {
+        Date.startDate(builder);
+        Date.addUnit(builder, unit);
+        return Date.endDate(builder);
+    }
+}
+
+//# sourceMappingURL=date.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/date.mjs.map b/igv_component/node_modules/apache-arrow/fb/date.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..c531b703da25dca9e54fe423ce3a1a6f3e2d9cbe
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/date.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/date.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,QAAQ,EAAE,MAAM,gBAAgB,CAAC;AAG1C;;;;;;;GAOG;AACH,MAAM,OAAO,IAAI;IAAjB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAuCb,CAAC;IAtCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,EAAyB,EAAE,GAAS;QACvD,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,EAAyB,EAAE,GAAS;QACnE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,IAAI;QACF,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,QAAQ,CAAC,WAAW,CAAC;IAClF,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,IAAa;QACvD,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,IAAI,EAAE,QAAQ,CAAC,WAAW,CAAC,CAAC;IACvD,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B;QACxC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B,EAAE,IAAa;QAC1D,IAAI,CAAC,SAAS,CAAC,OAAO,CAAC,CAAC;QACxB,IAAI,CAAC,OAAO,CAAC,OAAO,EAAE,IAAI,CAAC,CAAC;QAC5B,OAAO,IAAI,CAAC,OAAO,CAAC,OAAO,CAAC,CAAC;IAC/B,CAAC;CACA","file":"date.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/decimal.d.ts b/igv_component/node_modules/apache-arrow/fb/decimal.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..03c533d0e477a91f031230b082130e595c16ec44
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/decimal.d.ts
@@ -0,0 +1,33 @@
+import * as flatbuffers from 'flatbuffers';
+/**
+ * Exact decimal value represented as an integer value in two's
+ * complement. Currently only 128-bit (16-byte) and 256-bit (32-byte) integers
+ * are used. The representation uses the endianness indicated
+ * in the Schema.
+ */
+export declare class Decimal {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Decimal;
+    static getRootAsDecimal(bb: flatbuffers.ByteBuffer, obj?: Decimal): Decimal;
+    static getSizePrefixedRootAsDecimal(bb: flatbuffers.ByteBuffer, obj?: Decimal): Decimal;
+    /**
+     * Total number of decimal digits
+     */
+    precision(): number;
+    /**
+     * Number of digits after the decimal point "."
+     */
+    scale(): number;
+    /**
+     * Number of bits per value. The only accepted widths are 128 and 256.
+     * We use bitWidth for consistency with Int::bitWidth.
+     */
+    bitWidth(): number;
+    static startDecimal(builder: flatbuffers.Builder): void;
+    static addPrecision(builder: flatbuffers.Builder, precision: number): void;
+    static addScale(builder: flatbuffers.Builder, scale: number): void;
+    static addBitWidth(builder: flatbuffers.Builder, bitWidth: number): void;
+    static endDecimal(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createDecimal(builder: flatbuffers.Builder, precision: number, scale: number, bitWidth: number): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/decimal.d.ts.map b/igv_component/node_modules/apache-arrow/fb/decimal.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..1396f9f4ad27b7ff259ae38bd000de1eb0f99715
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/decimal.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/decimal.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;;;GAKG;AACH,qBAAa,OAAO;IAClB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,OAAO;IAMnD,MAAM,CAAC,gBAAgB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,OAAO,GAAE,OAAO;IAIxE,MAAM,CAAC,4BAA4B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,OAAO,GAAE,OAAO;IAKpF;;OAEG;IACH,SAAS,IAAG,MAAM;IAKlB;;OAEG;IACH,KAAK,IAAG,MAAM;IAKd;;;OAGG;IACH,QAAQ,IAAG,MAAM;IAKjB,MAAM,CAAC,YAAY,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI/C,MAAM,CAAC,YAAY,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,SAAS,EAAC,MAAM;IAIjE,MAAM,CAAC,QAAQ,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,KAAK,EAAC,MAAM;IAIzD,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAI/D,MAAM,CAAC,UAAU,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKjE,MAAM,CAAC,aAAa,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,SAAS,EAAC,MAAM,EAAE,KAAK,EAAC,MAAM,EAAE,QAAQ,EAAC,MAAM,GAAE,WAAW,CAAC,MAAM;CAOpH","file":"decimal.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/decimal.js b/igv_component/node_modules/apache-arrow/fb/decimal.js
new file mode 100644
index 0000000000000000000000000000000000000000..4a2dc0d2c8384d564b38e11b6e1a987f7b2bc1fa
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/decimal.js
@@ -0,0 +1,78 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Decimal = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+/**
+ * Exact decimal value represented as an integer value in two's
+ * complement. Currently only 128-bit (16-byte) and 256-bit (32-byte) integers
+ * are used. The representation uses the endianness indicated
+ * in the Schema.
+ */
+class Decimal {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsDecimal(bb, obj) {
+        return (obj || new Decimal()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsDecimal(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Decimal()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * Total number of decimal digits
+     */
+    precision() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt32(this.bb_pos + offset) : 0;
+    }
+    /**
+     * Number of digits after the decimal point "."
+     */
+    scale() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.readInt32(this.bb_pos + offset) : 0;
+    }
+    /**
+     * Number of bits per value. The only accepted widths are 128 and 256.
+     * We use bitWidth for consistency with Int::bitWidth.
+     */
+    bitWidth() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? this.bb.readInt32(this.bb_pos + offset) : 128;
+    }
+    static startDecimal(builder) {
+        builder.startObject(3);
+    }
+    static addPrecision(builder, precision) {
+        builder.addFieldInt32(0, precision, 0);
+    }
+    static addScale(builder, scale) {
+        builder.addFieldInt32(1, scale, 0);
+    }
+    static addBitWidth(builder, bitWidth) {
+        builder.addFieldInt32(2, bitWidth, 128);
+    }
+    static endDecimal(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createDecimal(builder, precision, scale, bitWidth) {
+        Decimal.startDecimal(builder);
+        Decimal.addPrecision(builder, precision);
+        Decimal.addScale(builder, scale);
+        Decimal.addBitWidth(builder, bitWidth);
+        return Decimal.endDecimal(builder);
+    }
+}
+exports.Decimal = Decimal;
+
+//# sourceMappingURL=decimal.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/decimal.js.map b/igv_component/node_modules/apache-arrow/fb/decimal.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..ef2cd1820a7a8f330ae469100557b92661a0a755
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/decimal.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/decimal.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C;;;;;GAKG;AACH,MAAa,OAAO;IAApB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAqEb,CAAC;IApED,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,EAAyB,EAAE,GAAY;QAC7D,OAAO,CAAC,GAAG,IAAI,IAAI,OAAO,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACxF,CAAC;IAED,MAAM,CAAC,4BAA4B,CAAC,EAAyB,EAAE,GAAY;QACzE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,OAAO,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACxF,CAAC;IAED;;OAEG;IACH,SAAS;QACP,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAC/D,CAAC;IAED;;OAEG;IACH,KAAK;QACH,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAC/D,CAAC;IAED;;;OAGG;IACH,QAAQ;QACN,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,CAAC;IACjE,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B;QAC7C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B,EAAE,SAAgB;QAC/D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,SAAS,EAAE,CAAC,CAAC,CAAC;IACzC,CAAC;IAED,MAAM,CAAC,QAAQ,CAAC,OAA2B,EAAE,KAAY;QACvD,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,CAAC;IACrC,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,QAAe;QAC7D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,QAAQ,EAAE,GAAG,CAAC,CAAC;IAC1C,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B;QAC3C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B,EAAE,SAAgB,EAAE,KAAY,EAAE,QAAe;QAC/F,OAAO,CAAC,YAAY,CAAC,OAAO,CAAC,CAAC;QAC9B,OAAO,CAAC,YAAY,CAAC,OAAO,EAAE,SAAS,CAAC,CAAC;QACzC,OAAO,CAAC,QAAQ,CAAC,OAAO,EAAE,KAAK,CAAC,CAAC;QACjC,OAAO,CAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,CAAC,CAAC;QACvC,OAAO,OAAO,CAAC,UAAU,CAAC,OAAO,CAAC,CAAC;IACrC,CAAC;CACA;AAvED,0BAuEC","file":"decimal.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/decimal.mjs b/igv_component/node_modules/apache-arrow/fb/decimal.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..8f73ae37596acd1054a85a2c0361abf43e66d677
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/decimal.mjs
@@ -0,0 +1,73 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+/**
+ * Exact decimal value represented as an integer value in two's
+ * complement. Currently only 128-bit (16-byte) and 256-bit (32-byte) integers
+ * are used. The representation uses the endianness indicated
+ * in the Schema.
+ */
+export class Decimal {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsDecimal(bb, obj) {
+        return (obj || new Decimal()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsDecimal(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Decimal()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * Total number of decimal digits
+     */
+    precision() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt32(this.bb_pos + offset) : 0;
+    }
+    /**
+     * Number of digits after the decimal point "."
+     */
+    scale() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.readInt32(this.bb_pos + offset) : 0;
+    }
+    /**
+     * Number of bits per value. The only accepted widths are 128 and 256.
+     * We use bitWidth for consistency with Int::bitWidth.
+     */
+    bitWidth() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? this.bb.readInt32(this.bb_pos + offset) : 128;
+    }
+    static startDecimal(builder) {
+        builder.startObject(3);
+    }
+    static addPrecision(builder, precision) {
+        builder.addFieldInt32(0, precision, 0);
+    }
+    static addScale(builder, scale) {
+        builder.addFieldInt32(1, scale, 0);
+    }
+    static addBitWidth(builder, bitWidth) {
+        builder.addFieldInt32(2, bitWidth, 128);
+    }
+    static endDecimal(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createDecimal(builder, precision, scale, bitWidth) {
+        Decimal.startDecimal(builder);
+        Decimal.addPrecision(builder, precision);
+        Decimal.addScale(builder, scale);
+        Decimal.addBitWidth(builder, bitWidth);
+        return Decimal.endDecimal(builder);
+    }
+}
+
+//# sourceMappingURL=decimal.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/decimal.mjs.map b/igv_component/node_modules/apache-arrow/fb/decimal.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..e4054d2245450ac709653367305a9ab1c59a69db
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/decimal.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/decimal.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;;;GAKG;AACH,MAAM,OAAO,OAAO;IAApB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAqEb,CAAC;IApED,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,EAAyB,EAAE,GAAY;QAC7D,OAAO,CAAC,GAAG,IAAI,IAAI,OAAO,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACxF,CAAC;IAED,MAAM,CAAC,4BAA4B,CAAC,EAAyB,EAAE,GAAY;QACzE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,OAAO,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACxF,CAAC;IAED;;OAEG;IACH,SAAS;QACP,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAC/D,CAAC;IAED;;OAEG;IACH,KAAK;QACH,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAC/D,CAAC;IAED;;;OAGG;IACH,QAAQ;QACN,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,CAAC;IACjE,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B;QAC7C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B,EAAE,SAAgB;QAC/D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,SAAS,EAAE,CAAC,CAAC,CAAC;IACzC,CAAC;IAED,MAAM,CAAC,QAAQ,CAAC,OAA2B,EAAE,KAAY;QACvD,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,CAAC;IACrC,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,QAAe;QAC7D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,QAAQ,EAAE,GAAG,CAAC,CAAC;IAC1C,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B;QAC3C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B,EAAE,SAAgB,EAAE,KAAY,EAAE,QAAe;QAC/F,OAAO,CAAC,YAAY,CAAC,OAAO,CAAC,CAAC;QAC9B,OAAO,CAAC,YAAY,CAAC,OAAO,EAAE,SAAS,CAAC,CAAC;QACzC,OAAO,CAAC,QAAQ,CAAC,OAAO,EAAE,KAAK,CAAC,CAAC;QACjC,OAAO,CAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,CAAC,CAAC;QACvC,OAAO,OAAO,CAAC,UAAU,CAAC,OAAO,CAAC,CAAC;IACrC,CAAC;CACA","file":"decimal.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-batch.d.ts b/igv_component/node_modules/apache-arrow/fb/dictionary-batch.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..ad877bff55d273f451286a53aff27349623052c0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-batch.d.ts
@@ -0,0 +1,30 @@
+import * as flatbuffers from 'flatbuffers';
+import { RecordBatch } from './record-batch.js';
+/**
+ * For sending dictionary encoding information. Any Field can be
+ * dictionary-encoded, but in this case none of its children may be
+ * dictionary-encoded.
+ * There is one vector / column per dictionary, but that vector / column
+ * may be spread across multiple dictionary batches by using the isDelta
+ * flag
+ */
+export declare class DictionaryBatch {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): DictionaryBatch;
+    static getRootAsDictionaryBatch(bb: flatbuffers.ByteBuffer, obj?: DictionaryBatch): DictionaryBatch;
+    static getSizePrefixedRootAsDictionaryBatch(bb: flatbuffers.ByteBuffer, obj?: DictionaryBatch): DictionaryBatch;
+    id(): flatbuffers.Long;
+    data(obj?: RecordBatch): RecordBatch | null;
+    /**
+     * If isDelta is true the values in the dictionary are to be appended to a
+     * dictionary with the indicated id. If isDelta is false this dictionary
+     * should replace the existing dictionary.
+     */
+    isDelta(): boolean;
+    static startDictionaryBatch(builder: flatbuffers.Builder): void;
+    static addId(builder: flatbuffers.Builder, id: flatbuffers.Long): void;
+    static addData(builder: flatbuffers.Builder, dataOffset: flatbuffers.Offset): void;
+    static addIsDelta(builder: flatbuffers.Builder, isDelta: boolean): void;
+    static endDictionaryBatch(builder: flatbuffers.Builder): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-batch.d.ts.map b/igv_component/node_modules/apache-arrow/fb/dictionary-batch.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..cd2406d3167fc294e11b543fe14755cfda25a58f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-batch.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/dictionary-batch.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,WAAW,EAAE,MAAM,mBAAmB,CAAC;AAGhD;;;;;;;GAOG;AACH,qBAAa,eAAe;IAC1B,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,eAAe;IAM3D,MAAM,CAAC,wBAAwB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,eAAe,GAAE,eAAe;IAIhG,MAAM,CAAC,oCAAoC,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,eAAe,GAAE,eAAe;IAK5G,EAAE,IAAG,WAAW,CAAC,IAAI;IAKrB,IAAI,CAAC,GAAG,CAAC,EAAC,WAAW,GAAE,WAAW,GAAC,IAAI;IAKvC;;;;OAIG;IACH,OAAO,IAAG,OAAO;IAKjB,MAAM,CAAC,oBAAoB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAIvD,MAAM,CAAC,KAAK,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,EAAE,EAAC,WAAW,CAAC,IAAI;IAI7D,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,UAAU,EAAC,WAAW,CAAC,MAAM;IAIzE,MAAM,CAAC,UAAU,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,OAAO,EAAC,OAAO;IAI9D,MAAM,CAAC,kBAAkB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;CAKxE","file":"dictionary-batch.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-batch.js b/igv_component/node_modules/apache-arrow/fb/dictionary-batch.js
new file mode 100644
index 0000000000000000000000000000000000000000..0248851ddec564a72ca4184a0020ed7b7cec223e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-batch.js
@@ -0,0 +1,69 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.DictionaryBatch = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const record_batch_js_1 = require("./record-batch.js");
+/**
+ * For sending dictionary encoding information. Any Field can be
+ * dictionary-encoded, but in this case none of its children may be
+ * dictionary-encoded.
+ * There is one vector / column per dictionary, but that vector / column
+ * may be spread across multiple dictionary batches by using the isDelta
+ * flag
+ */
+class DictionaryBatch {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsDictionaryBatch(bb, obj) {
+        return (obj || new DictionaryBatch()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsDictionaryBatch(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new DictionaryBatch()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    id() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt64(this.bb_pos + offset) : this.bb.createLong(0, 0);
+    }
+    data(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? (obj || new record_batch_js_1.RecordBatch()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    /**
+     * If isDelta is true the values in the dictionary are to be appended to a
+     * dictionary with the indicated id. If isDelta is false this dictionary
+     * should replace the existing dictionary.
+     */
+    isDelta() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? !!this.bb.readInt8(this.bb_pos + offset) : false;
+    }
+    static startDictionaryBatch(builder) {
+        builder.startObject(3);
+    }
+    static addId(builder, id) {
+        builder.addFieldInt64(0, id, builder.createLong(0, 0));
+    }
+    static addData(builder, dataOffset) {
+        builder.addFieldOffset(1, dataOffset, 0);
+    }
+    static addIsDelta(builder, isDelta) {
+        builder.addFieldInt8(2, +isDelta, +false);
+    }
+    static endDictionaryBatch(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+}
+exports.DictionaryBatch = DictionaryBatch;
+
+//# sourceMappingURL=dictionary-batch.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-batch.js.map b/igv_component/node_modules/apache-arrow/fb/dictionary-batch.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..70ee22eed1ecbc33420592ad4836f6e529a21e21
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-batch.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/dictionary-batch.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,uDAAgD;AAGhD;;;;;;;GAOG;AACH,MAAa,eAAe;IAA5B;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAyDb,CAAC;IAxDD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,wBAAwB,CAAC,EAAyB,EAAE,GAAoB;QAC7E,OAAO,CAAC,GAAG,IAAI,IAAI,eAAe,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAChG,CAAC;IAED,MAAM,CAAC,oCAAoC,CAAC,EAAyB,EAAE,GAAoB;QACzF,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,eAAe,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAChG,CAAC;IAED,EAAE;QACA,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;IACvF,CAAC;IAED,IAAI,CAAC,GAAgB;QACnB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,6BAAW,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IAChH,CAAC;IAED;;;;OAIG;IACH,OAAO;QACL,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC;IACpE,CAAC;IAED,MAAM,CAAC,oBAAoB,CAAC,OAA2B;QACrD,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,KAAK,CAAC,OAA2B,EAAE,EAAmB;QAC3D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,EAAE,EAAE,OAAO,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;IACzD,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,UAA6B;QACvE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,UAAU,EAAE,CAAC,CAAC,CAAC;IAC3C,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B,EAAE,OAAe;QAC5D,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,CAAC,OAAO,EAAE,CAAC,KAAK,CAAC,CAAC;IAC5C,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B;QACnD,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;CAEA;AA3DD,0CA2DC","file":"dictionary-batch.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-batch.mjs b/igv_component/node_modules/apache-arrow/fb/dictionary-batch.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..0efc564a7cb93d20ea36c7733a89082ca418b37e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-batch.mjs
@@ -0,0 +1,64 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { RecordBatch } from './record-batch.mjs';
+/**
+ * For sending dictionary encoding information. Any Field can be
+ * dictionary-encoded, but in this case none of its children may be
+ * dictionary-encoded.
+ * There is one vector / column per dictionary, but that vector / column
+ * may be spread across multiple dictionary batches by using the isDelta
+ * flag
+ */
+export class DictionaryBatch {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsDictionaryBatch(bb, obj) {
+        return (obj || new DictionaryBatch()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsDictionaryBatch(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new DictionaryBatch()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    id() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt64(this.bb_pos + offset) : this.bb.createLong(0, 0);
+    }
+    data(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? (obj || new RecordBatch()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    /**
+     * If isDelta is true the values in the dictionary are to be appended to a
+     * dictionary with the indicated id. If isDelta is false this dictionary
+     * should replace the existing dictionary.
+     */
+    isDelta() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? !!this.bb.readInt8(this.bb_pos + offset) : false;
+    }
+    static startDictionaryBatch(builder) {
+        builder.startObject(3);
+    }
+    static addId(builder, id) {
+        builder.addFieldInt64(0, id, builder.createLong(0, 0));
+    }
+    static addData(builder, dataOffset) {
+        builder.addFieldOffset(1, dataOffset, 0);
+    }
+    static addIsDelta(builder, isDelta) {
+        builder.addFieldInt8(2, +isDelta, +false);
+    }
+    static endDictionaryBatch(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+}
+
+//# sourceMappingURL=dictionary-batch.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-batch.mjs.map b/igv_component/node_modules/apache-arrow/fb/dictionary-batch.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..af2bb14a9b8acc3fc9035a0564a18337e457bb38
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-batch.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/dictionary-batch.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,WAAW,EAAE,MAAM,mBAAmB,CAAC;AAGhD;;;;;;;GAOG;AACH,MAAM,OAAO,eAAe;IAA5B;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAyDb,CAAC;IAxDD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,wBAAwB,CAAC,EAAyB,EAAE,GAAoB;QAC7E,OAAO,CAAC,GAAG,IAAI,IAAI,eAAe,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAChG,CAAC;IAED,MAAM,CAAC,oCAAoC,CAAC,EAAyB,EAAE,GAAoB;QACzF,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,eAAe,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAChG,CAAC;IAED,EAAE;QACA,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;IACvF,CAAC;IAED,IAAI,CAAC,GAAgB;QACnB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,WAAW,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IAChH,CAAC;IAED;;;;OAIG;IACH,OAAO;QACL,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC;IACpE,CAAC;IAED,MAAM,CAAC,oBAAoB,CAAC,OAA2B;QACrD,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,KAAK,CAAC,OAA2B,EAAE,EAAmB;QAC3D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,EAAE,EAAE,OAAO,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;IACzD,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,UAA6B;QACvE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,UAAU,EAAE,CAAC,CAAC,CAAC;IAC3C,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B,EAAE,OAAe;QAC5D,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,CAAC,OAAO,EAAE,CAAC,KAAK,CAAC,CAAC;IAC5C,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B;QACnD,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;CAEA","file":"dictionary-batch.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.d.ts b/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..41b9d8bbe72f565254baded5ffc7a855f99a5298
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.d.ts
@@ -0,0 +1,38 @@
+import * as flatbuffers from 'flatbuffers';
+import { DictionaryKind } from './dictionary-kind.js';
+import { Int } from './int.js';
+export declare class DictionaryEncoding {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): DictionaryEncoding;
+    static getRootAsDictionaryEncoding(bb: flatbuffers.ByteBuffer, obj?: DictionaryEncoding): DictionaryEncoding;
+    static getSizePrefixedRootAsDictionaryEncoding(bb: flatbuffers.ByteBuffer, obj?: DictionaryEncoding): DictionaryEncoding;
+    /**
+     * The known dictionary id in the application where this data is used. In
+     * the file or streaming formats, the dictionary ids are found in the
+     * DictionaryBatch messages
+     */
+    id(): flatbuffers.Long;
+    /**
+     * The dictionary indices are constrained to be non-negative integers. If
+     * this field is null, the indices must be signed int32. To maximize
+     * cross-language compatibility and performance, implementations are
+     * recommended to prefer signed integer types over unsigned integer types
+     * and to avoid uint64 indices unless they are required by an application.
+     */
+    indexType(obj?: Int): Int | null;
+    /**
+     * By default, dictionaries are not ordered, or the order does not have
+     * semantic meaning. In some statistical, applications, dictionary-encoding
+     * is used to represent ordered categorical data, and we provide a way to
+     * preserve that metadata here
+     */
+    isOrdered(): boolean;
+    dictionaryKind(): DictionaryKind;
+    static startDictionaryEncoding(builder: flatbuffers.Builder): void;
+    static addId(builder: flatbuffers.Builder, id: flatbuffers.Long): void;
+    static addIndexType(builder: flatbuffers.Builder, indexTypeOffset: flatbuffers.Offset): void;
+    static addIsOrdered(builder: flatbuffers.Builder, isOrdered: boolean): void;
+    static addDictionaryKind(builder: flatbuffers.Builder, dictionaryKind: DictionaryKind): void;
+    static endDictionaryEncoding(builder: flatbuffers.Builder): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.d.ts.map b/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..446027430e5129532dd60c9e5e9afb875a4ea6c1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/dictionary-encoding.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,cAAc,EAAE,MAAM,sBAAsB,CAAC;AACtD,OAAO,EAAE,GAAG,EAAE,MAAM,UAAU,CAAC;AAG/B,qBAAa,kBAAkB;IAC7B,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,kBAAkB;IAM9D,MAAM,CAAC,2BAA2B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,kBAAkB,GAAE,kBAAkB;IAIzG,MAAM,CAAC,uCAAuC,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,kBAAkB,GAAE,kBAAkB;IAKrH;;;;OAIG;IACH,EAAE,IAAG,WAAW,CAAC,IAAI;IAKrB;;;;;;OAMG;IACH,SAAS,CAAC,GAAG,CAAC,EAAC,GAAG,GAAE,GAAG,GAAC,IAAI;IAK5B;;;;;OAKG;IACH,SAAS,IAAG,OAAO;IAKnB,cAAc,IAAG,cAAc;IAK/B,MAAM,CAAC,uBAAuB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI1D,MAAM,CAAC,KAAK,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,EAAE,EAAC,WAAW,CAAC,IAAI;IAI7D,MAAM,CAAC,YAAY,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,eAAe,EAAC,WAAW,CAAC,MAAM;IAInF,MAAM,CAAC,YAAY,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,SAAS,EAAC,OAAO;IAIlE,MAAM,CAAC,iBAAiB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,cAAc,EAAC,cAAc;IAInF,MAAM,CAAC,qBAAqB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;CAK3E","file":"dictionary-encoding.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.js b/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.js
new file mode 100644
index 0000000000000000000000000000000000000000..37d70e3a6e11bfde6580508f0350ef47d139935f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.js
@@ -0,0 +1,82 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.DictionaryEncoding = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const dictionary_kind_js_1 = require("./dictionary-kind.js");
+const int_js_1 = require("./int.js");
+class DictionaryEncoding {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsDictionaryEncoding(bb, obj) {
+        return (obj || new DictionaryEncoding()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsDictionaryEncoding(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new DictionaryEncoding()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * The known dictionary id in the application where this data is used. In
+     * the file or streaming formats, the dictionary ids are found in the
+     * DictionaryBatch messages
+     */
+    id() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt64(this.bb_pos + offset) : this.bb.createLong(0, 0);
+    }
+    /**
+     * The dictionary indices are constrained to be non-negative integers. If
+     * this field is null, the indices must be signed int32. To maximize
+     * cross-language compatibility and performance, implementations are
+     * recommended to prefer signed integer types over unsigned integer types
+     * and to avoid uint64 indices unless they are required by an application.
+     */
+    indexType(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? (obj || new int_js_1.Int()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    /**
+     * By default, dictionaries are not ordered, or the order does not have
+     * semantic meaning. In some statistical, applications, dictionary-encoding
+     * is used to represent ordered categorical data, and we provide a way to
+     * preserve that metadata here
+     */
+    isOrdered() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? !!this.bb.readInt8(this.bb_pos + offset) : false;
+    }
+    dictionaryKind() {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : dictionary_kind_js_1.DictionaryKind.DenseArray;
+    }
+    static startDictionaryEncoding(builder) {
+        builder.startObject(4);
+    }
+    static addId(builder, id) {
+        builder.addFieldInt64(0, id, builder.createLong(0, 0));
+    }
+    static addIndexType(builder, indexTypeOffset) {
+        builder.addFieldOffset(1, indexTypeOffset, 0);
+    }
+    static addIsOrdered(builder, isOrdered) {
+        builder.addFieldInt8(2, +isOrdered, +false);
+    }
+    static addDictionaryKind(builder, dictionaryKind) {
+        builder.addFieldInt16(3, dictionaryKind, dictionary_kind_js_1.DictionaryKind.DenseArray);
+    }
+    static endDictionaryEncoding(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+}
+exports.DictionaryEncoding = DictionaryEncoding;
+
+//# sourceMappingURL=dictionary-encoding.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.js.map b/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..f03a5ded122aed21d948f9c78e5095ab67b3710b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/dictionary-encoding.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,6DAAsD;AACtD,qCAA+B;AAG/B,MAAa,kBAAkB;IAA/B;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA+Eb,CAAC;IA9ED,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,2BAA2B,CAAC,EAAyB,EAAE,GAAuB;QACnF,OAAO,CAAC,GAAG,IAAI,IAAI,kBAAkB,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACnG,CAAC;IAED,MAAM,CAAC,uCAAuC,CAAC,EAAyB,EAAE,GAAuB;QAC/F,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,kBAAkB,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACnG,CAAC;IAED;;;;OAIG;IACH,EAAE;QACA,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;IACvF,CAAC;IAED;;;;;;OAMG;IACH,SAAS,CAAC,GAAQ;QAChB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,YAAG,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACxG,CAAC;IAED;;;;;OAKG;IACH,SAAS;QACP,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC;IACpE,CAAC;IAED,cAAc;QACZ,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,mCAAc,CAAC,UAAU,CAAC;IACvF,CAAC;IAED,MAAM,CAAC,uBAAuB,CAAC,OAA2B;QACxD,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,KAAK,CAAC,OAA2B,EAAE,EAAmB;QAC3D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,EAAE,EAAE,OAAO,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;IACzD,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B,EAAE,eAAkC;QACjF,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,eAAe,EAAE,CAAC,CAAC,CAAC;IAChD,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B,EAAE,SAAiB;QAChE,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,CAAC,SAAS,EAAE,CAAC,KAAK,CAAC,CAAC;IAC9C,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,OAA2B,EAAE,cAA6B;QACjF,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,cAAc,EAAE,mCAAc,CAAC,UAAU,CAAC,CAAC;IACtE,CAAC;IAED,MAAM,CAAC,qBAAqB,CAAC,OAA2B;QACtD,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;CAEA;AAjFD,gDAiFC","file":"dictionary-encoding.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.mjs b/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..86b8031f635fc52919f64f1435847fc625f8387f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.mjs
@@ -0,0 +1,77 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { DictionaryKind } from './dictionary-kind.mjs';
+import { Int } from './int.mjs';
+export class DictionaryEncoding {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsDictionaryEncoding(bb, obj) {
+        return (obj || new DictionaryEncoding()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsDictionaryEncoding(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new DictionaryEncoding()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * The known dictionary id in the application where this data is used. In
+     * the file or streaming formats, the dictionary ids are found in the
+     * DictionaryBatch messages
+     */
+    id() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt64(this.bb_pos + offset) : this.bb.createLong(0, 0);
+    }
+    /**
+     * The dictionary indices are constrained to be non-negative integers. If
+     * this field is null, the indices must be signed int32. To maximize
+     * cross-language compatibility and performance, implementations are
+     * recommended to prefer signed integer types over unsigned integer types
+     * and to avoid uint64 indices unless they are required by an application.
+     */
+    indexType(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? (obj || new Int()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    /**
+     * By default, dictionaries are not ordered, or the order does not have
+     * semantic meaning. In some statistical, applications, dictionary-encoding
+     * is used to represent ordered categorical data, and we provide a way to
+     * preserve that metadata here
+     */
+    isOrdered() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? !!this.bb.readInt8(this.bb_pos + offset) : false;
+    }
+    dictionaryKind() {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : DictionaryKind.DenseArray;
+    }
+    static startDictionaryEncoding(builder) {
+        builder.startObject(4);
+    }
+    static addId(builder, id) {
+        builder.addFieldInt64(0, id, builder.createLong(0, 0));
+    }
+    static addIndexType(builder, indexTypeOffset) {
+        builder.addFieldOffset(1, indexTypeOffset, 0);
+    }
+    static addIsOrdered(builder, isOrdered) {
+        builder.addFieldInt8(2, +isOrdered, +false);
+    }
+    static addDictionaryKind(builder, dictionaryKind) {
+        builder.addFieldInt16(3, dictionaryKind, DictionaryKind.DenseArray);
+    }
+    static endDictionaryEncoding(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+}
+
+//# sourceMappingURL=dictionary-encoding.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.mjs.map b/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..1133f49b1c425a3a326463e4684b831ebd467576
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-encoding.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/dictionary-encoding.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,cAAc,EAAE,MAAM,sBAAsB,CAAC;AACtD,OAAO,EAAE,GAAG,EAAE,MAAM,UAAU,CAAC;AAG/B,MAAM,OAAO,kBAAkB;IAA/B;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA+Eb,CAAC;IA9ED,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,2BAA2B,CAAC,EAAyB,EAAE,GAAuB;QACnF,OAAO,CAAC,GAAG,IAAI,IAAI,kBAAkB,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACnG,CAAC;IAED,MAAM,CAAC,uCAAuC,CAAC,EAAyB,EAAE,GAAuB;QAC/F,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,kBAAkB,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACnG,CAAC;IAED;;;;OAIG;IACH,EAAE;QACA,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;IACvF,CAAC;IAED;;;;;;OAMG;IACH,SAAS,CAAC,GAAQ;QAChB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,GAAG,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACxG,CAAC;IAED;;;;;OAKG;IACH,SAAS;QACP,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC;IACpE,CAAC;IAED,cAAc;QACZ,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,cAAc,CAAC,UAAU,CAAC;IACvF,CAAC;IAED,MAAM,CAAC,uBAAuB,CAAC,OAA2B;QACxD,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,KAAK,CAAC,OAA2B,EAAE,EAAmB;QAC3D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,EAAE,EAAE,OAAO,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;IACzD,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B,EAAE,eAAkC;QACjF,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,eAAe,EAAE,CAAC,CAAC,CAAC;IAChD,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B,EAAE,SAAiB;QAChE,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,CAAC,SAAS,EAAE,CAAC,KAAK,CAAC,CAAC;IAC9C,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,OAA2B,EAAE,cAA6B;QACjF,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,cAAc,EAAE,cAAc,CAAC,UAAU,CAAC,CAAC;IACtE,CAAC;IAED,MAAM,CAAC,qBAAqB,CAAC,OAA2B;QACtD,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;CAEA","file":"dictionary-encoding.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-kind.d.ts b/igv_component/node_modules/apache-arrow/fb/dictionary-kind.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..1c195405627230a63a0707593c34fdd82edc15fe
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-kind.d.ts
@@ -0,0 +1,10 @@
+/**
+ * ----------------------------------------------------------------------
+ * Dictionary encoding metadata
+ * Maintained for forwards compatibility, in the future
+ * Dictionaries might be explicit maps between integers and values
+ * allowing for non-contiguous index values
+ */
+export declare enum DictionaryKind {
+    DenseArray = 0
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-kind.d.ts.map b/igv_component/node_modules/apache-arrow/fb/dictionary-kind.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..f8632f1af0ec3601817c616085d40d5ab9eb2198
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-kind.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/dictionary-kind.ts"],"names":[],"mappings":"AAEA;;;;;;GAMG;AACH,oBAAY,cAAc;IACxB,UAAU,IAAI;CACf","file":"dictionary-kind.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-kind.js b/igv_component/node_modules/apache-arrow/fb/dictionary-kind.js
new file mode 100644
index 0000000000000000000000000000000000000000..842c75e7117e294321dc197241571bbf45ad17d7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-kind.js
@@ -0,0 +1,17 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.DictionaryKind = void 0;
+/**
+ * ----------------------------------------------------------------------
+ * Dictionary encoding metadata
+ * Maintained for forwards compatibility, in the future
+ * Dictionaries might be explicit maps between integers and values
+ * allowing for non-contiguous index values
+ */
+var DictionaryKind;
+(function (DictionaryKind) {
+    DictionaryKind[DictionaryKind["DenseArray"] = 0] = "DenseArray";
+})(DictionaryKind = exports.DictionaryKind || (exports.DictionaryKind = {}));
+
+//# sourceMappingURL=dictionary-kind.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-kind.js.map b/igv_component/node_modules/apache-arrow/fb/dictionary-kind.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..b895423c588d0208de70189bf66dd31eab802183
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-kind.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/dictionary-kind.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAErE;;;;;;GAMG;AACH,IAAY,cAEX;AAFD,WAAY,cAAc;IACxB,+DAAc,CAAA;AAChB,CAAC,EAFW,cAAc,GAAd,sBAAc,KAAd,sBAAc,QAEzB","file":"dictionary-kind.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-kind.mjs b/igv_component/node_modules/apache-arrow/fb/dictionary-kind.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..06bcd11dde7c55b0c6c37663c29b372fb238fa30
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-kind.mjs
@@ -0,0 +1,14 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+/**
+ * ----------------------------------------------------------------------
+ * Dictionary encoding metadata
+ * Maintained for forwards compatibility, in the future
+ * Dictionaries might be explicit maps between integers and values
+ * allowing for non-contiguous index values
+ */
+export var DictionaryKind;
+(function (DictionaryKind) {
+    DictionaryKind[DictionaryKind["DenseArray"] = 0] = "DenseArray";
+})(DictionaryKind || (DictionaryKind = {}));
+
+//# sourceMappingURL=dictionary-kind.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/dictionary-kind.mjs.map b/igv_component/node_modules/apache-arrow/fb/dictionary-kind.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..9a633165f320f99a489be06e7012dafc13b23f54
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/dictionary-kind.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/dictionary-kind.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE;;;;;;GAMG;AACH,MAAM,CAAN,IAAY,cAEX;AAFD,WAAY,cAAc;IACxB,+DAAc,CAAA;AAChB,CAAC,EAFW,cAAc,KAAd,cAAc,QAEzB","file":"dictionary-kind.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/duration.d.ts b/igv_component/node_modules/apache-arrow/fb/duration.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b09d7e4219eac4aa6f8fb53ae74db3e6309843ea
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/duration.d.ts
@@ -0,0 +1,14 @@
+import * as flatbuffers from 'flatbuffers';
+import { TimeUnit } from './time-unit.js';
+export declare class Duration {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Duration;
+    static getRootAsDuration(bb: flatbuffers.ByteBuffer, obj?: Duration): Duration;
+    static getSizePrefixedRootAsDuration(bb: flatbuffers.ByteBuffer, obj?: Duration): Duration;
+    unit(): TimeUnit;
+    static startDuration(builder: flatbuffers.Builder): void;
+    static addUnit(builder: flatbuffers.Builder, unit: TimeUnit): void;
+    static endDuration(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createDuration(builder: flatbuffers.Builder, unit: TimeUnit): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/duration.d.ts.map b/igv_component/node_modules/apache-arrow/fb/duration.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..b6894a4070393c7a80aeb578a6f31d7b96d8692a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/duration.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/duration.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,QAAQ,EAAE,MAAM,gBAAgB,CAAC;AAG1C,qBAAa,QAAQ;IACnB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,QAAQ;IAMpD,MAAM,CAAC,iBAAiB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,QAAQ,GAAE,QAAQ;IAI3E,MAAM,CAAC,6BAA6B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,QAAQ,GAAE,QAAQ;IAKvF,IAAI,IAAG,QAAQ;IAKf,MAAM,CAAC,aAAa,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAIhD,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,QAAQ;IAIzD,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKlE,MAAM,CAAC,cAAc,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,QAAQ,GAAE,WAAW,CAAC,MAAM;CAKnF","file":"duration.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/duration.js b/igv_component/node_modules/apache-arrow/fb/duration.js
new file mode 100644
index 0000000000000000000000000000000000000000..a7b43b27f253e195ab850a0f5d031d5fa7e574c6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/duration.js
@@ -0,0 +1,47 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Duration = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const time_unit_js_1 = require("./time-unit.js");
+class Duration {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsDuration(bb, obj) {
+        return (obj || new Duration()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsDuration(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Duration()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    unit() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : time_unit_js_1.TimeUnit.MILLISECOND;
+    }
+    static startDuration(builder) {
+        builder.startObject(1);
+    }
+    static addUnit(builder, unit) {
+        builder.addFieldInt16(0, unit, time_unit_js_1.TimeUnit.MILLISECOND);
+    }
+    static endDuration(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createDuration(builder, unit) {
+        Duration.startDuration(builder);
+        Duration.addUnit(builder, unit);
+        return Duration.endDuration(builder);
+    }
+}
+exports.Duration = Duration;
+
+//# sourceMappingURL=duration.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/duration.js.map b/igv_component/node_modules/apache-arrow/fb/duration.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..471c66ee0580eed0c64bbfd96022da97cb522b61
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/duration.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/duration.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,iDAA0C;AAG1C,MAAa,QAAQ;IAArB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAuCb,CAAC;IAtCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,EAAyB,EAAE,GAAa;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,QAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACzF,CAAC;IAED,MAAM,CAAC,6BAA6B,CAAC,EAAyB,EAAE,GAAa;QAC3E,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,QAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACzF,CAAC;IAED,IAAI;QACF,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,uBAAQ,CAAC,WAAW,CAAC;IAClF,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B;QAC9C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,IAAa;QACvD,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,IAAI,EAAE,uBAAQ,CAAC,WAAW,CAAC,CAAC;IACvD,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B;QAC5C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B,EAAE,IAAa;QAC9D,QAAQ,CAAC,aAAa,CAAC,OAAO,CAAC,CAAC;QAChC,QAAQ,CAAC,OAAO,CAAC,OAAO,EAAE,IAAI,CAAC,CAAC;QAChC,OAAO,QAAQ,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;IACvC,CAAC;CACA;AAzCD,4BAyCC","file":"duration.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/duration.mjs b/igv_component/node_modules/apache-arrow/fb/duration.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..62bc20814abc347233055c9a62f5c0b8b69750e7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/duration.mjs
@@ -0,0 +1,42 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { TimeUnit } from './time-unit.mjs';
+export class Duration {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsDuration(bb, obj) {
+        return (obj || new Duration()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsDuration(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Duration()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    unit() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : TimeUnit.MILLISECOND;
+    }
+    static startDuration(builder) {
+        builder.startObject(1);
+    }
+    static addUnit(builder, unit) {
+        builder.addFieldInt16(0, unit, TimeUnit.MILLISECOND);
+    }
+    static endDuration(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createDuration(builder, unit) {
+        Duration.startDuration(builder);
+        Duration.addUnit(builder, unit);
+        return Duration.endDuration(builder);
+    }
+}
+
+//# sourceMappingURL=duration.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/duration.mjs.map b/igv_component/node_modules/apache-arrow/fb/duration.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..849f0521b73e54918594f294b45d6e40fac321a6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/duration.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/duration.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,QAAQ,EAAE,MAAM,gBAAgB,CAAC;AAG1C,MAAM,OAAO,QAAQ;IAArB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAuCb,CAAC;IAtCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,EAAyB,EAAE,GAAa;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,QAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACzF,CAAC;IAED,MAAM,CAAC,6BAA6B,CAAC,EAAyB,EAAE,GAAa;QAC3E,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,QAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACzF,CAAC;IAED,IAAI;QACF,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,QAAQ,CAAC,WAAW,CAAC;IAClF,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B;QAC9C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,IAAa;QACvD,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,IAAI,EAAE,QAAQ,CAAC,WAAW,CAAC,CAAC;IACvD,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B;QAC5C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B,EAAE,IAAa;QAC9D,QAAQ,CAAC,aAAa,CAAC,OAAO,CAAC,CAAC;QAChC,QAAQ,CAAC,OAAO,CAAC,OAAO,EAAE,IAAI,CAAC,CAAC;QAChC,OAAO,QAAQ,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;IACvC,CAAC;CACA","file":"duration.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/endianness.d.ts b/igv_component/node_modules/apache-arrow/fb/endianness.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..0b209f8bdc685dc282dfad9e583b829a82a0dcbb
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/endianness.d.ts
@@ -0,0 +1,8 @@
+/**
+ * ----------------------------------------------------------------------
+ * Endianness of the platform producing the data
+ */
+export declare enum Endianness {
+    Little = 0,
+    Big = 1
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/endianness.d.ts.map b/igv_component/node_modules/apache-arrow/fb/endianness.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..ac14ebcf3e04616c28cb98896fd9e934aa696445
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/endianness.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/endianness.ts"],"names":[],"mappings":"AAEA;;;GAGG;AACH,oBAAY,UAAU;IACpB,MAAM,IAAI;IACV,GAAG,IAAI;CACR","file":"endianness.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/endianness.js b/igv_component/node_modules/apache-arrow/fb/endianness.js
new file mode 100644
index 0000000000000000000000000000000000000000..abebc1a309b2e69d52700c278502fee3b0be456f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/endianness.js
@@ -0,0 +1,15 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Endianness = void 0;
+/**
+ * ----------------------------------------------------------------------
+ * Endianness of the platform producing the data
+ */
+var Endianness;
+(function (Endianness) {
+    Endianness[Endianness["Little"] = 0] = "Little";
+    Endianness[Endianness["Big"] = 1] = "Big";
+})(Endianness = exports.Endianness || (exports.Endianness = {}));
+
+//# sourceMappingURL=endianness.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/endianness.js.map b/igv_component/node_modules/apache-arrow/fb/endianness.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..da83b73301ebe7317f48afa62abbbabae9951ee7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/endianness.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/endianness.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAErE;;;GAGG;AACH,IAAY,UAGX;AAHD,WAAY,UAAU;IACpB,+CAAU,CAAA;IACV,yCAAO,CAAA;AACT,CAAC,EAHW,UAAU,GAAV,kBAAU,KAAV,kBAAU,QAGrB","file":"endianness.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/endianness.mjs b/igv_component/node_modules/apache-arrow/fb/endianness.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..fcc378be884044347cb42910e5acb456858371a1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/endianness.mjs
@@ -0,0 +1,12 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+/**
+ * ----------------------------------------------------------------------
+ * Endianness of the platform producing the data
+ */
+export var Endianness;
+(function (Endianness) {
+    Endianness[Endianness["Little"] = 0] = "Little";
+    Endianness[Endianness["Big"] = 1] = "Big";
+})(Endianness || (Endianness = {}));
+
+//# sourceMappingURL=endianness.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/endianness.mjs.map b/igv_component/node_modules/apache-arrow/fb/endianness.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..8015c884fb64f9328557c0363dbc0b1db53c794a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/endianness.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/endianness.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE;;;GAGG;AACH,MAAM,CAAN,IAAY,UAGX;AAHD,WAAY,UAAU;IACpB,+CAAU,CAAA;IACV,yCAAO,CAAA;AACT,CAAC,EAHW,UAAU,KAAV,UAAU,QAGrB","file":"endianness.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/feature.d.ts b/igv_component/node_modules/apache-arrow/fb/feature.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..dee7b5a37a90600d8cd113290db5f7ac08ef670d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/feature.d.ts
@@ -0,0 +1,36 @@
+/**
+ * Represents Arrow Features that might not have full support
+ * within implementations. This is intended to be used in
+ * two scenarios:
+ *  1.  A mechanism for readers of Arrow Streams
+ *      and files to understand that the stream or file makes
+ *      use of a feature that isn't supported or unknown to
+ *      the implementation (and therefore can meet the Arrow
+ *      forward compatibility guarantees).
+ *  2.  A means of negotiating between a client and server
+ *      what features a stream is allowed to use. The enums
+ *      values here are intented to represent higher level
+ *      features, additional details maybe negotiated
+ *      with key-value pairs specific to the protocol.
+ *
+ * Enums added to this list should be assigned power-of-two values
+ * to facilitate exchanging and comparing bitmaps for supported
+ * features.
+ */
+export declare enum Feature {
+    /**
+     * Needed to make flatbuffers happy.
+     */
+    UNUSED = 0,
+    /**
+     * The stream makes use of multiple full dictionaries with the
+     * same ID and assumes clients implement dictionary replacement
+     * correctly.
+     */
+    DICTIONARY_REPLACEMENT = 1,
+    /**
+     * The stream makes use of compressed bodies as described
+     * in Message.fbs.
+     */
+    COMPRESSED_BODY = 2
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/feature.d.ts.map b/igv_component/node_modules/apache-arrow/fb/feature.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..88832ff807ab46faaf2814ed51ce5f51ab4eec0d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/feature.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/feature.ts"],"names":[],"mappings":"AAEA;;;;;;;;;;;;;;;;;;GAkBG;AACH,oBAAY,OAAO;IACjB;;OAEG;IACH,MAAM,IAAI;IAEV;;;;OAIG;IACH,sBAAsB,IAAI;IAE1B;;;OAGG;IACH,eAAe,IAAI;CACpB","file":"feature.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/feature.js b/igv_component/node_modules/apache-arrow/fb/feature.js
new file mode 100644
index 0000000000000000000000000000000000000000..3ab2faffb029a246fa725bbf27bc525881896a5e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/feature.js
@@ -0,0 +1,43 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Feature = void 0;
+/**
+ * Represents Arrow Features that might not have full support
+ * within implementations. This is intended to be used in
+ * two scenarios:
+ *  1.  A mechanism for readers of Arrow Streams
+ *      and files to understand that the stream or file makes
+ *      use of a feature that isn't supported or unknown to
+ *      the implementation (and therefore can meet the Arrow
+ *      forward compatibility guarantees).
+ *  2.  A means of negotiating between a client and server
+ *      what features a stream is allowed to use. The enums
+ *      values here are intented to represent higher level
+ *      features, additional details maybe negotiated
+ *      with key-value pairs specific to the protocol.
+ *
+ * Enums added to this list should be assigned power-of-two values
+ * to facilitate exchanging and comparing bitmaps for supported
+ * features.
+ */
+var Feature;
+(function (Feature) {
+    /**
+     * Needed to make flatbuffers happy.
+     */
+    Feature[Feature["UNUSED"] = 0] = "UNUSED";
+    /**
+     * The stream makes use of multiple full dictionaries with the
+     * same ID and assumes clients implement dictionary replacement
+     * correctly.
+     */
+    Feature[Feature["DICTIONARY_REPLACEMENT"] = 1] = "DICTIONARY_REPLACEMENT";
+    /**
+     * The stream makes use of compressed bodies as described
+     * in Message.fbs.
+     */
+    Feature[Feature["COMPRESSED_BODY"] = 2] = "COMPRESSED_BODY";
+})(Feature = exports.Feature || (exports.Feature = {}));
+
+//# sourceMappingURL=feature.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/feature.js.map b/igv_component/node_modules/apache-arrow/fb/feature.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..3902e8c814d79545eb87edc871d7a60b68e055f7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/feature.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/feature.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAErE;;;;;;;;;;;;;;;;;;GAkBG;AACH,IAAY,OAkBX;AAlBD,WAAY,OAAO;IACjB;;OAEG;IACH,yCAAU,CAAA;IAEV;;;;OAIG;IACH,yEAA0B,CAAA;IAE1B;;;OAGG;IACH,2DAAmB,CAAA;AACrB,CAAC,EAlBW,OAAO,GAAP,eAAO,KAAP,eAAO,QAkBlB","file":"feature.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/feature.mjs b/igv_component/node_modules/apache-arrow/fb/feature.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..e43dd8e36b03a02309608d94b669ae82250f92d0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/feature.mjs
@@ -0,0 +1,40 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+/**
+ * Represents Arrow Features that might not have full support
+ * within implementations. This is intended to be used in
+ * two scenarios:
+ *  1.  A mechanism for readers of Arrow Streams
+ *      and files to understand that the stream or file makes
+ *      use of a feature that isn't supported or unknown to
+ *      the implementation (and therefore can meet the Arrow
+ *      forward compatibility guarantees).
+ *  2.  A means of negotiating between a client and server
+ *      what features a stream is allowed to use. The enums
+ *      values here are intented to represent higher level
+ *      features, additional details maybe negotiated
+ *      with key-value pairs specific to the protocol.
+ *
+ * Enums added to this list should be assigned power-of-two values
+ * to facilitate exchanging and comparing bitmaps for supported
+ * features.
+ */
+export var Feature;
+(function (Feature) {
+    /**
+     * Needed to make flatbuffers happy.
+     */
+    Feature[Feature["UNUSED"] = 0] = "UNUSED";
+    /**
+     * The stream makes use of multiple full dictionaries with the
+     * same ID and assumes clients implement dictionary replacement
+     * correctly.
+     */
+    Feature[Feature["DICTIONARY_REPLACEMENT"] = 1] = "DICTIONARY_REPLACEMENT";
+    /**
+     * The stream makes use of compressed bodies as described
+     * in Message.fbs.
+     */
+    Feature[Feature["COMPRESSED_BODY"] = 2] = "COMPRESSED_BODY";
+})(Feature || (Feature = {}));
+
+//# sourceMappingURL=feature.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/feature.mjs.map b/igv_component/node_modules/apache-arrow/fb/feature.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..a894f7b7385a1340eaffed6d03c6bf2390f8c469
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/feature.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/feature.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE;;;;;;;;;;;;;;;;;;GAkBG;AACH,MAAM,CAAN,IAAY,OAkBX;AAlBD,WAAY,OAAO;IACjB;;OAEG;IACH,yCAAU,CAAA;IAEV;;;;OAIG;IACH,yEAA0B,CAAA;IAE1B;;;OAGG;IACH,2DAAmB,CAAA;AACrB,CAAC,EAlBW,OAAO,KAAP,OAAO,QAkBlB","file":"feature.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/field-node.d.ts b/igv_component/node_modules/apache-arrow/fb/field-node.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..efaaad9453608ce526ad4a756862a609bd9cc740
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/field-node.d.ts
@@ -0,0 +1,30 @@
+import * as flatbuffers from 'flatbuffers';
+/**
+ * ----------------------------------------------------------------------
+ * Data structures for describing a table row batch (a collection of
+ * equal-length Arrow arrays)
+ * Metadata about a field at some level of a nested type tree (but not
+ * its children).
+ *
+ * For example, a List<Int16> with values `[[1, 2, 3], null, [4], [5, 6], null]`
+ * would have {length: 5, null_count: 2} for its List node, and {length: 6,
+ * null_count: 0} for its Int16 node, as separate FieldNode structs
+ */
+export declare class FieldNode {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): FieldNode;
+    /**
+     * The number of value slots in the Arrow array at this level of a nested
+     * tree
+     */
+    length(): flatbuffers.Long;
+    /**
+     * The number of observed nulls. Fields with null_count == 0 may choose not
+     * to write their physical validity bitmap out as a materialized buffer,
+     * instead setting the length of the bitmap buffer to 0.
+     */
+    nullCount(): flatbuffers.Long;
+    static sizeOf(): number;
+    static createFieldNode(builder: flatbuffers.Builder, length: flatbuffers.Long, null_count: flatbuffers.Long): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/field-node.d.ts.map b/igv_component/node_modules/apache-arrow/fb/field-node.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..2735ff84c2e5c5047ac673febe45e747c8b2d031
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/field-node.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/field-node.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;;;;;;;;GAUG;AACH,qBAAa,SAAS;IACpB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,SAAS;IAMrD;;;OAGG;IACH,MAAM,IAAG,WAAW,CAAC,IAAI;IAIzB;;;;OAIG;IACH,SAAS,IAAG,WAAW,CAAC,IAAI;IAI5B,MAAM,CAAC,MAAM,IAAG,MAAM;IAItB,MAAM,CAAC,eAAe,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,MAAM,EAAE,WAAW,CAAC,IAAI,EAAE,UAAU,EAAE,WAAW,CAAC,IAAI,GAAE,WAAW,CAAC,MAAM;CAO7H","file":"field-node.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/field-node.js b/igv_component/node_modules/apache-arrow/fb/field-node.js
new file mode 100644
index 0000000000000000000000000000000000000000..14045f3c3cca5cae9d701c7ccb6f35a060f287c4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/field-node.js
@@ -0,0 +1,53 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.FieldNode = void 0;
+/**
+ * ----------------------------------------------------------------------
+ * Data structures for describing a table row batch (a collection of
+ * equal-length Arrow arrays)
+ * Metadata about a field at some level of a nested type tree (but not
+ * its children).
+ *
+ * For example, a List<Int16> with values `[[1, 2, 3], null, [4], [5, 6], null]`
+ * would have {length: 5, null_count: 2} for its List node, and {length: 6,
+ * null_count: 0} for its Int16 node, as separate FieldNode structs
+ */
+class FieldNode {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    /**
+     * The number of value slots in the Arrow array at this level of a nested
+     * tree
+     */
+    length() {
+        return this.bb.readInt64(this.bb_pos);
+    }
+    /**
+     * The number of observed nulls. Fields with null_count == 0 may choose not
+     * to write their physical validity bitmap out as a materialized buffer,
+     * instead setting the length of the bitmap buffer to 0.
+     */
+    nullCount() {
+        return this.bb.readInt64(this.bb_pos + 8);
+    }
+    static sizeOf() {
+        return 16;
+    }
+    static createFieldNode(builder, length, null_count) {
+        builder.prep(8, 16);
+        builder.writeInt64(null_count);
+        builder.writeInt64(length);
+        return builder.offset();
+    }
+}
+exports.FieldNode = FieldNode;
+
+//# sourceMappingURL=field-node.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/field-node.js.map b/igv_component/node_modules/apache-arrow/fb/field-node.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..9ea4fef7887f40ae2e4fa8b5a708aaf4908a582d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/field-node.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/field-node.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAIrE;;;;;;;;;;GAUG;AACH,MAAa,SAAS;IAAtB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAmCb,CAAC;IAlCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED;;;OAGG;IACH,MAAM;QACJ,OAAO,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,CAAC,CAAC;IACzC,CAAC;IAED;;;;OAIG;IACH,SAAS;QACP,OAAO,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;IAC7C,CAAC;IAED,MAAM,CAAC,MAAM;QACX,OAAO,EAAE,CAAC;IACZ,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,OAA2B,EAAE,MAAwB,EAAE,UAA4B;QACxG,OAAO,CAAC,IAAI,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC;QACpB,OAAO,CAAC,UAAU,CAAC,UAAU,CAAC,CAAC;QAC/B,OAAO,CAAC,UAAU,CAAC,MAAM,CAAC,CAAC;QAC3B,OAAO,OAAO,CAAC,MAAM,EAAE,CAAC;IAC1B,CAAC;CAEA;AArCD,8BAqCC","file":"field-node.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/field-node.mjs b/igv_component/node_modules/apache-arrow/fb/field-node.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..6ca1f94b653c0f6648e7f268f5dbcf841121c41a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/field-node.mjs
@@ -0,0 +1,49 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+/**
+ * ----------------------------------------------------------------------
+ * Data structures for describing a table row batch (a collection of
+ * equal-length Arrow arrays)
+ * Metadata about a field at some level of a nested type tree (but not
+ * its children).
+ *
+ * For example, a List<Int16> with values `[[1, 2, 3], null, [4], [5, 6], null]`
+ * would have {length: 5, null_count: 2} for its List node, and {length: 6,
+ * null_count: 0} for its Int16 node, as separate FieldNode structs
+ */
+export class FieldNode {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    /**
+     * The number of value slots in the Arrow array at this level of a nested
+     * tree
+     */
+    length() {
+        return this.bb.readInt64(this.bb_pos);
+    }
+    /**
+     * The number of observed nulls. Fields with null_count == 0 may choose not
+     * to write their physical validity bitmap out as a materialized buffer,
+     * instead setting the length of the bitmap buffer to 0.
+     */
+    nullCount() {
+        return this.bb.readInt64(this.bb_pos + 8);
+    }
+    static sizeOf() {
+        return 16;
+    }
+    static createFieldNode(builder, length, null_count) {
+        builder.prep(8, 16);
+        builder.writeInt64(null_count);
+        builder.writeInt64(length);
+        return builder.offset();
+    }
+}
+
+//# sourceMappingURL=field-node.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/field-node.mjs.map b/igv_component/node_modules/apache-arrow/fb/field-node.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..b576f84e660ef7f214bc41318070190c31e2a2f3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/field-node.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/field-node.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAIrE;;;;;;;;;;GAUG;AACH,MAAM,OAAO,SAAS;IAAtB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAmCb,CAAC;IAlCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED;;;OAGG;IACH,MAAM;QACJ,OAAO,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,CAAC,CAAC;IACzC,CAAC;IAED;;;;OAIG;IACH,SAAS;QACP,OAAO,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC;IAC7C,CAAC;IAED,MAAM,CAAC,MAAM;QACX,OAAO,EAAE,CAAC;IACZ,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,OAA2B,EAAE,MAAwB,EAAE,UAA4B;QACxG,OAAO,CAAC,IAAI,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC;QACpB,OAAO,CAAC,UAAU,CAAC,UAAU,CAAC,CAAC;QAC/B,OAAO,CAAC,UAAU,CAAC,MAAM,CAAC,CAAC;QAC3B,OAAO,OAAO,CAAC,MAAM,EAAE,CAAC;IAC1B,CAAC;CAEA","file":"field-node.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/field.d.ts b/igv_component/node_modules/apache-arrow/fb/field.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e2f4e8b5f59d55acf78af6d67e19bf41018c733a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/field.d.ts
@@ -0,0 +1,58 @@
+import * as flatbuffers from 'flatbuffers';
+import { DictionaryEncoding } from './dictionary-encoding.js';
+import { KeyValue } from './key-value.js';
+import { Type } from './type.js';
+/**
+ * ----------------------------------------------------------------------
+ * A field represents a named column in a record / row batch or child of a
+ * nested type.
+ */
+export declare class Field {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Field;
+    static getRootAsField(bb: flatbuffers.ByteBuffer, obj?: Field): Field;
+    static getSizePrefixedRootAsField(bb: flatbuffers.ByteBuffer, obj?: Field): Field;
+    /**
+     * Name is not required, in i.e. a List
+     */
+    name(): string | null;
+    name(optionalEncoding: flatbuffers.Encoding): string | Uint8Array | null;
+    /**
+     * Whether or not this field can contain nulls. Should be true in general.
+     */
+    nullable(): boolean;
+    typeType(): Type;
+    /**
+     * This is the type of the decoded value if the field is dictionary encoded.
+     */
+    type<T extends flatbuffers.Table>(obj: any): any | null;
+    /**
+     * Present only if the field is dictionary encoded.
+     */
+    dictionary(obj?: DictionaryEncoding): DictionaryEncoding | null;
+    /**
+     * children apply only to nested data types like Struct, List and Union. For
+     * primitive types children will have length 0.
+     */
+    children(index: number, obj?: Field): Field | null;
+    childrenLength(): number;
+    /**
+     * User-defined metadata
+     */
+    customMetadata(index: number, obj?: KeyValue): KeyValue | null;
+    customMetadataLength(): number;
+    static startField(builder: flatbuffers.Builder): void;
+    static addName(builder: flatbuffers.Builder, nameOffset: flatbuffers.Offset): void;
+    static addNullable(builder: flatbuffers.Builder, nullable: boolean): void;
+    static addTypeType(builder: flatbuffers.Builder, typeType: Type): void;
+    static addType(builder: flatbuffers.Builder, typeOffset: flatbuffers.Offset): void;
+    static addDictionary(builder: flatbuffers.Builder, dictionaryOffset: flatbuffers.Offset): void;
+    static addChildren(builder: flatbuffers.Builder, childrenOffset: flatbuffers.Offset): void;
+    static createChildrenVector(builder: flatbuffers.Builder, data: flatbuffers.Offset[]): flatbuffers.Offset;
+    static startChildrenVector(builder: flatbuffers.Builder, numElems: number): void;
+    static addCustomMetadata(builder: flatbuffers.Builder, customMetadataOffset: flatbuffers.Offset): void;
+    static createCustomMetadataVector(builder: flatbuffers.Builder, data: flatbuffers.Offset[]): flatbuffers.Offset;
+    static startCustomMetadataVector(builder: flatbuffers.Builder, numElems: number): void;
+    static endField(builder: flatbuffers.Builder): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/field.d.ts.map b/igv_component/node_modules/apache-arrow/fb/field.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..a8a87585623d8ac9a7ecf3c021d5abdc0d6adb19
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/field.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/field.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,kBAAkB,EAAE,MAAM,0BAA0B,CAAC;AAC9D,OAAO,EAAE,QAAQ,EAAE,MAAM,gBAAgB,CAAC;AAC1C,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AAGjC;;;;GAIG;AACH,qBAAa,KAAK;IAChB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,KAAK;IAMjD,MAAM,CAAC,cAAc,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,KAAK,GAAE,KAAK;IAIlE,MAAM,CAAC,0BAA0B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,KAAK,GAAE,KAAK;IAK9E;;OAEG;IACH,IAAI,IAAG,MAAM,GAAC,IAAI;IAClB,IAAI,CAAC,gBAAgB,EAAC,WAAW,CAAC,QAAQ,GAAE,MAAM,GAAC,UAAU,GAAC,IAAI;IAMlE;;OAEG;IACH,QAAQ,IAAG,OAAO;IAKlB,QAAQ,IAAG,IAAI;IAKf;;OAEG;IAEH,IAAI,CAAC,CAAC,SAAS,WAAW,CAAC,KAAK,EAAE,GAAG,EAAC,GAAG,GAAE,GAAG,GAAC,IAAI;IAKnD;;OAEG;IACH,UAAU,CAAC,GAAG,CAAC,EAAC,kBAAkB,GAAE,kBAAkB,GAAC,IAAI;IAK3D;;;OAGG;IACH,QAAQ,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,CAAC,EAAC,KAAK,GAAE,KAAK,GAAC,IAAI;IAK9C,cAAc,IAAG,MAAM;IAKvB;;OAEG;IACH,cAAc,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,CAAC,EAAC,QAAQ,GAAE,QAAQ,GAAC,IAAI;IAK1D,oBAAoB,IAAG,MAAM;IAK7B,MAAM,CAAC,UAAU,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI7C,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,UAAU,EAAC,WAAW,CAAC,MAAM;IAIzE,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,OAAO;IAIhE,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,IAAI;IAI7D,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,UAAU,EAAC,WAAW,CAAC,MAAM;IAIzE,MAAM,CAAC,aAAa,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,gBAAgB,EAAC,WAAW,CAAC,MAAM;IAIrF,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,cAAc,EAAC,WAAW,CAAC,MAAM;IAIjF,MAAM,CAAC,oBAAoB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,WAAW,CAAC,MAAM,EAAE,GAAE,WAAW,CAAC,MAAM;IAQtG,MAAM,CAAC,mBAAmB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAIvE,MAAM,CAAC,iBAAiB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,oBAAoB,EAAC,WAAW,CAAC,MAAM;IAI7F,MAAM,CAAC,0BAA0B,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,WAAW,CAAC,MAAM,EAAE,GAAE,WAAW,CAAC,MAAM;IAQ5G,MAAM,CAAC,yBAAyB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAI7E,MAAM,CAAC,QAAQ,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;CAK9D","file":"field.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/field.js b/igv_component/node_modules/apache-arrow/fb/field.js
new file mode 100644
index 0000000000000000000000000000000000000000..09f6c96af385b1b5de442e37d5bad5287c0ecf89
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/field.js
@@ -0,0 +1,136 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Field = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const dictionary_encoding_js_1 = require("./dictionary-encoding.js");
+const key_value_js_1 = require("./key-value.js");
+const type_js_1 = require("./type.js");
+/**
+ * ----------------------------------------------------------------------
+ * A field represents a named column in a record / row batch or child of a
+ * nested type.
+ */
+class Field {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsField(bb, obj) {
+        return (obj || new Field()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsField(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Field()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    name(optionalEncoding) {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.__string(this.bb_pos + offset, optionalEncoding) : null;
+    }
+    /**
+     * Whether or not this field can contain nulls. Should be true in general.
+     */
+    nullable() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? !!this.bb.readInt8(this.bb_pos + offset) : false;
+    }
+    typeType() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? this.bb.readUint8(this.bb_pos + offset) : type_js_1.Type.NONE;
+    }
+    /**
+     * This is the type of the decoded value if the field is dictionary encoded.
+     */
+    // @ts-ignore
+    type(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.__union(obj, this.bb_pos + offset) : null;
+    }
+    /**
+     * Present only if the field is dictionary encoded.
+     */
+    dictionary(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? (obj || new dictionary_encoding_js_1.DictionaryEncoding()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    /**
+     * children apply only to nested data types like Struct, List and Union. For
+     * primitive types children will have length 0.
+     */
+    children(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 14);
+        return offset ? (obj || new Field()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
+    }
+    childrenLength() {
+        const offset = this.bb.__offset(this.bb_pos, 14);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * User-defined metadata
+     */
+    customMetadata(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 16);
+        return offset ? (obj || new key_value_js_1.KeyValue()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
+    }
+    customMetadataLength() {
+        const offset = this.bb.__offset(this.bb_pos, 16);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    static startField(builder) {
+        builder.startObject(7);
+    }
+    static addName(builder, nameOffset) {
+        builder.addFieldOffset(0, nameOffset, 0);
+    }
+    static addNullable(builder, nullable) {
+        builder.addFieldInt8(1, +nullable, +false);
+    }
+    static addTypeType(builder, typeType) {
+        builder.addFieldInt8(2, typeType, type_js_1.Type.NONE);
+    }
+    static addType(builder, typeOffset) {
+        builder.addFieldOffset(3, typeOffset, 0);
+    }
+    static addDictionary(builder, dictionaryOffset) {
+        builder.addFieldOffset(4, dictionaryOffset, 0);
+    }
+    static addChildren(builder, childrenOffset) {
+        builder.addFieldOffset(5, childrenOffset, 0);
+    }
+    static createChildrenVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addOffset(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startChildrenVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static addCustomMetadata(builder, customMetadataOffset) {
+        builder.addFieldOffset(6, customMetadataOffset, 0);
+    }
+    static createCustomMetadataVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addOffset(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startCustomMetadataVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static endField(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+}
+exports.Field = Field;
+
+//# sourceMappingURL=field.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/field.js.map b/igv_component/node_modules/apache-arrow/fb/field.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..65b9668c64b67fdc9586648c777387223c397947
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/field.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/field.mjs b/igv_component/node_modules/apache-arrow/fb/field.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..c09107be416cd0c36e8cc81029f02c025a248a14
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/field.mjs
@@ -0,0 +1,131 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { DictionaryEncoding } from './dictionary-encoding.mjs';
+import { KeyValue } from './key-value.mjs';
+import { Type } from './type.mjs';
+/**
+ * ----------------------------------------------------------------------
+ * A field represents a named column in a record / row batch or child of a
+ * nested type.
+ */
+export class Field {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsField(bb, obj) {
+        return (obj || new Field()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsField(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Field()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    name(optionalEncoding) {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.__string(this.bb_pos + offset, optionalEncoding) : null;
+    }
+    /**
+     * Whether or not this field can contain nulls. Should be true in general.
+     */
+    nullable() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? !!this.bb.readInt8(this.bb_pos + offset) : false;
+    }
+    typeType() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? this.bb.readUint8(this.bb_pos + offset) : Type.NONE;
+    }
+    /**
+     * This is the type of the decoded value if the field is dictionary encoded.
+     */
+    // @ts-ignore
+    type(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.__union(obj, this.bb_pos + offset) : null;
+    }
+    /**
+     * Present only if the field is dictionary encoded.
+     */
+    dictionary(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? (obj || new DictionaryEncoding()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    /**
+     * children apply only to nested data types like Struct, List and Union. For
+     * primitive types children will have length 0.
+     */
+    children(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 14);
+        return offset ? (obj || new Field()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
+    }
+    childrenLength() {
+        const offset = this.bb.__offset(this.bb_pos, 14);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * User-defined metadata
+     */
+    customMetadata(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 16);
+        return offset ? (obj || new KeyValue()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
+    }
+    customMetadataLength() {
+        const offset = this.bb.__offset(this.bb_pos, 16);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    static startField(builder) {
+        builder.startObject(7);
+    }
+    static addName(builder, nameOffset) {
+        builder.addFieldOffset(0, nameOffset, 0);
+    }
+    static addNullable(builder, nullable) {
+        builder.addFieldInt8(1, +nullable, +false);
+    }
+    static addTypeType(builder, typeType) {
+        builder.addFieldInt8(2, typeType, Type.NONE);
+    }
+    static addType(builder, typeOffset) {
+        builder.addFieldOffset(3, typeOffset, 0);
+    }
+    static addDictionary(builder, dictionaryOffset) {
+        builder.addFieldOffset(4, dictionaryOffset, 0);
+    }
+    static addChildren(builder, childrenOffset) {
+        builder.addFieldOffset(5, childrenOffset, 0);
+    }
+    static createChildrenVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addOffset(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startChildrenVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static addCustomMetadata(builder, customMetadataOffset) {
+        builder.addFieldOffset(6, customMetadataOffset, 0);
+    }
+    static createCustomMetadataVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addOffset(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startCustomMetadataVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static endField(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+}
+
+//# sourceMappingURL=field.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/field.mjs.map b/igv_component/node_modules/apache-arrow/fb/field.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..f2749d0226f9b95ccc9e8a5c2cb565b63a9a3e69
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/field.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/field.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,kBAAkB,EAAE,MAAM,0BAA0B,CAAC;AAC9D,OAAO,EAAE,QAAQ,EAAE,MAAM,gBAAgB,CAAC;AAC1C,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AAGjC;;;;GAIG;AACH,MAAM,OAAO,KAAK;IAAlB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAgJb,CAAC;IA/ID,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,EAAyB,EAAE,GAAU;QACzD,OAAO,CAAC,GAAG,IAAI,IAAI,KAAK,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACtF,CAAC;IAED,MAAM,CAAC,0BAA0B,CAAC,EAAyB,EAAE,GAAU;QACrE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,KAAK,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACtF,CAAC;IAOD,IAAI,CAAC,gBAAqB;QACxB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,EAAE,gBAAgB,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACnF,CAAC;IAED;;OAEG;IACH,QAAQ;QACN,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC;IACpE,CAAC;IAED,QAAQ;QACN,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,IAAI,CAAC;IACvE,CAAC;IAED;;OAEG;IACH,aAAa;IACb,IAAI,CAA8B,GAAO;QACvC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,OAAO,CAAC,GAAG,EAAE,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACrE,CAAC;IAED;;OAEG;IACH,UAAU,CAAC,GAAuB;QAChC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,kBAAkB,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACvH,CAAC;IAED;;;OAGG;IACH,QAAQ,CAAC,KAAa,EAAE,GAAU;QAChC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,KAAK,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,CAAC,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACzI,CAAC;IAED,cAAc;QACZ,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED;;OAEG;IACH,cAAc,CAAC,KAAa,EAAE,GAAa;QACzC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,QAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,CAAC,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IAC5I,CAAC;IAED,oBAAoB;QAClB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B;QAC3C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,UAA6B;QACvE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,UAAU,EAAE,CAAC,CAAC,CAAC;IAC3C,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,QAAgB;QAC9D,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,KAAK,CAAC,CAAC;IAC7C,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,QAAa;QAC3D,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,QAAQ,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;IAC/C,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,UAA6B;QACvE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,UAAU,EAAE,CAAC,CAAC,CAAC;IAC3C,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B,EAAE,gBAAmC;QACnF,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,gBAAgB,EAAE,CAAC,CAAC,CAAC;IACjD,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,cAAiC;QAC/E,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,cAAc,EAAE,CAAC,CAAC,CAAC;IAC/C,CAAC;IAED,MAAM,CAAC,oBAAoB,CAAC,OAA2B,EAAE,IAAyB;QAChF,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACvC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACzC,OAAO,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC,CAAE,CAAC,CAAC;SAC7B;QACD,OAAO,OAAO,CAAC,SAAS,EAAE,CAAC;IAC7B,CAAC;IAED,MAAM,CAAC,mBAAmB,CAAC,OAA2B,EAAE,QAAe;QACrE,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACtC,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,OAA2B,EAAE,oBAAuC;QAC3F,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,oBAAoB,EAAE,CAAC,CAAC,CAAC;IACrD,CAAC;IAED,MAAM,CAAC,0BAA0B,CAAC,OAA2B,EAAE,IAAyB;QACtF,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACvC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.d.ts b/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..0634d5511d55b222333e1fac416593702a9df7f1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.d.ts
@@ -0,0 +1,16 @@
+import * as flatbuffers from 'flatbuffers';
+export declare class FixedSizeBinary {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): FixedSizeBinary;
+    static getRootAsFixedSizeBinary(bb: flatbuffers.ByteBuffer, obj?: FixedSizeBinary): FixedSizeBinary;
+    static getSizePrefixedRootAsFixedSizeBinary(bb: flatbuffers.ByteBuffer, obj?: FixedSizeBinary): FixedSizeBinary;
+    /**
+     * Number of bytes per value
+     */
+    byteWidth(): number;
+    static startFixedSizeBinary(builder: flatbuffers.Builder): void;
+    static addByteWidth(builder: flatbuffers.Builder, byteWidth: number): void;
+    static endFixedSizeBinary(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createFixedSizeBinary(builder: flatbuffers.Builder, byteWidth: number): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.d.ts.map b/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..8742166269d448a39fc0e67074f526e2c7555a00
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/fixed-size-binary.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,qBAAa,eAAe;IAC1B,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,eAAe;IAM3D,MAAM,CAAC,wBAAwB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,eAAe,GAAE,eAAe;IAIhG,MAAM,CAAC,oCAAoC,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,eAAe,GAAE,eAAe;IAK5G;;OAEG;IACH,SAAS,IAAG,MAAM;IAKlB,MAAM,CAAC,oBAAoB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAIvD,MAAM,CAAC,YAAY,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,SAAS,EAAC,MAAM;IAIjE,MAAM,CAAC,kBAAkB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKzE,MAAM,CAAC,qBAAqB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,SAAS,EAAC,MAAM,GAAE,WAAW,CAAC,MAAM;CAK7F","file":"fixed-size-binary.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.js b/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.js
new file mode 100644
index 0000000000000000000000000000000000000000..33fbe6ba602119ac9bb4aaeb18b5126e524e610d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.js
@@ -0,0 +1,49 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.FixedSizeBinary = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+class FixedSizeBinary {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsFixedSizeBinary(bb, obj) {
+        return (obj || new FixedSizeBinary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsFixedSizeBinary(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new FixedSizeBinary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * Number of bytes per value
+     */
+    byteWidth() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt32(this.bb_pos + offset) : 0;
+    }
+    static startFixedSizeBinary(builder) {
+        builder.startObject(1);
+    }
+    static addByteWidth(builder, byteWidth) {
+        builder.addFieldInt32(0, byteWidth, 0);
+    }
+    static endFixedSizeBinary(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createFixedSizeBinary(builder, byteWidth) {
+        FixedSizeBinary.startFixedSizeBinary(builder);
+        FixedSizeBinary.addByteWidth(builder, byteWidth);
+        return FixedSizeBinary.endFixedSizeBinary(builder);
+    }
+}
+exports.FixedSizeBinary = FixedSizeBinary;
+
+//# sourceMappingURL=fixed-size-binary.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.js.map b/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..6a1c4dcdbbc2afc2ca5e24ed1d0afa54d2770e69
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/fixed-size-binary.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,MAAa,eAAe;IAA5B;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA0Cb,CAAC;IAzCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,wBAAwB,CAAC,EAAyB,EAAE,GAAoB;QAC7E,OAAO,CAAC,GAAG,IAAI,IAAI,eAAe,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAChG,CAAC;IAED,MAAM,CAAC,oCAAoC,CAAC,EAAyB,EAAE,GAAoB;QACzF,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,eAAe,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAChG,CAAC;IAED;;OAEG;IACH,SAAS;QACP,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAC/D,CAAC;IAED,MAAM,CAAC,oBAAoB,CAAC,OAA2B;QACrD,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B,EAAE,SAAgB;QAC/D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,SAAS,EAAE,CAAC,CAAC,CAAC;IACzC,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B;QACnD,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,qBAAqB,CAAC,OAA2B,EAAE,SAAgB;QACxE,eAAe,CAAC,oBAAoB,CAAC,OAAO,CAAC,CAAC;QAC9C,eAAe,CAAC,YAAY,CAAC,OAAO,EAAE,SAAS,CAAC,CAAC;QACjD,OAAO,eAAe,CAAC,kBAAkB,CAAC,OAAO,CAAC,CAAC;IACrD,CAAC;CACA;AA5CD,0CA4CC","file":"fixed-size-binary.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.mjs b/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..e035520bce0515edd9bf913aefbf0851ca7790c1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.mjs
@@ -0,0 +1,44 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+export class FixedSizeBinary {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsFixedSizeBinary(bb, obj) {
+        return (obj || new FixedSizeBinary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsFixedSizeBinary(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new FixedSizeBinary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * Number of bytes per value
+     */
+    byteWidth() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt32(this.bb_pos + offset) : 0;
+    }
+    static startFixedSizeBinary(builder) {
+        builder.startObject(1);
+    }
+    static addByteWidth(builder, byteWidth) {
+        builder.addFieldInt32(0, byteWidth, 0);
+    }
+    static endFixedSizeBinary(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createFixedSizeBinary(builder, byteWidth) {
+        FixedSizeBinary.startFixedSizeBinary(builder);
+        FixedSizeBinary.addByteWidth(builder, byteWidth);
+        return FixedSizeBinary.endFixedSizeBinary(builder);
+    }
+}
+
+//# sourceMappingURL=fixed-size-binary.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.mjs.map b/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..5c04270d41ede5f6285cd4395b27552ea9e559d5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/fixed-size-binary.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/fixed-size-binary.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,MAAM,OAAO,eAAe;IAA5B;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA0Cb,CAAC;IAzCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,wBAAwB,CAAC,EAAyB,EAAE,GAAoB;QAC7E,OAAO,CAAC,GAAG,IAAI,IAAI,eAAe,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAChG,CAAC;IAED,MAAM,CAAC,oCAAoC,CAAC,EAAyB,EAAE,GAAoB;QACzF,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,eAAe,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAChG,CAAC;IAED;;OAEG;IACH,SAAS;QACP,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAC/D,CAAC;IAED,MAAM,CAAC,oBAAoB,CAAC,OAA2B;QACrD,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B,EAAE,SAAgB;QAC/D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,SAAS,EAAE,CAAC,CAAC,CAAC;IACzC,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B;QACnD,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,qBAAqB,CAAC,OAA2B,EAAE,SAAgB;QACxE,eAAe,CAAC,oBAAoB,CAAC,OAAO,CAAC,CAAC;QAC9C,eAAe,CAAC,YAAY,CAAC,OAAO,EAAE,SAAS,CAAC,CAAC;QACjD,OAAO,eAAe,CAAC,kBAAkB,CAAC,OAAO,CAAC,CAAC;IACrD,CAAC;CACA","file":"fixed-size-binary.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/fixed-size-list.d.ts b/igv_component/node_modules/apache-arrow/fb/fixed-size-list.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..7b0009ab3ae4061c294a0faadbf379f592b4b316
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/fixed-size-list.d.ts
@@ -0,0 +1,16 @@
+import * as flatbuffers from 'flatbuffers';
+export declare class FixedSizeList {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): FixedSizeList;
+    static getRootAsFixedSizeList(bb: flatbuffers.ByteBuffer, obj?: FixedSizeList): FixedSizeList;
+    static getSizePrefixedRootAsFixedSizeList(bb: flatbuffers.ByteBuffer, obj?: FixedSizeList): FixedSizeList;
+    /**
+     * Number of list items per value
+     */
+    listSize(): number;
+    static startFixedSizeList(builder: flatbuffers.Builder): void;
+    static addListSize(builder: flatbuffers.Builder, listSize: number): void;
+    static endFixedSizeList(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createFixedSizeList(builder: flatbuffers.Builder, listSize: number): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/fixed-size-list.d.ts.map b/igv_component/node_modules/apache-arrow/fb/fixed-size-list.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..f7cc5a705da4f111908e0e897922a5fd27f1916e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/fixed-size-list.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/fixed-size-list.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,qBAAa,aAAa;IACxB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,aAAa;IAMzD,MAAM,CAAC,sBAAsB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,aAAa,GAAE,aAAa;IAI1F,MAAM,CAAC,kCAAkC,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,aAAa,GAAE,aAAa;IAKtG;;OAEG;IACH,QAAQ,IAAG,MAAM;IAKjB,MAAM,CAAC,kBAAkB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAIrD,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAI/D,MAAM,CAAC,gBAAgB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKvE,MAAM,CAAC,mBAAmB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM,GAAE,WAAW,CAAC,MAAM;CAK1F","file":"fixed-size-list.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/fixed-size-list.js b/igv_component/node_modules/apache-arrow/fb/fixed-size-list.js
new file mode 100644
index 0000000000000000000000000000000000000000..233fdd23d8c0d0937beb58ab1fa8a4df2854a643
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/fixed-size-list.js
@@ -0,0 +1,49 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.FixedSizeList = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+class FixedSizeList {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsFixedSizeList(bb, obj) {
+        return (obj || new FixedSizeList()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsFixedSizeList(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new FixedSizeList()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * Number of list items per value
+     */
+    listSize() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt32(this.bb_pos + offset) : 0;
+    }
+    static startFixedSizeList(builder) {
+        builder.startObject(1);
+    }
+    static addListSize(builder, listSize) {
+        builder.addFieldInt32(0, listSize, 0);
+    }
+    static endFixedSizeList(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createFixedSizeList(builder, listSize) {
+        FixedSizeList.startFixedSizeList(builder);
+        FixedSizeList.addListSize(builder, listSize);
+        return FixedSizeList.endFixedSizeList(builder);
+    }
+}
+exports.FixedSizeList = FixedSizeList;
+
+//# sourceMappingURL=fixed-size-list.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/fixed-size-list.js.map b/igv_component/node_modules/apache-arrow/fb/fixed-size-list.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..c66be7990b55eac651b7ebfd1cb349942243feaa
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/fixed-size-list.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/fixed-size-list.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,MAAa,aAAa;IAA1B;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA0Cb,CAAC;IAzCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,sBAAsB,CAAC,EAAyB,EAAE,GAAkB;QACzE,OAAO,CAAC,GAAG,IAAI,IAAI,aAAa,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC9F,CAAC;IAED,MAAM,CAAC,kCAAkC,CAAC,EAAyB,EAAE,GAAkB;QACrF,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,aAAa,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC9F,CAAC;IAED;;OAEG;IACH,QAAQ;QACN,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAC/D,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B;QACnD,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,QAAe;QAC7D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACxC,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,OAA2B;QACjD,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,mBAAmB,CAAC,OAA2B,EAAE,QAAe;QACrE,aAAa,CAAC,kBAAkB,CAAC,OAAO,CAAC,CAAC;QAC1C,aAAa,CAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,CAAC,CAAC;QAC7C,OAAO,aAAa,CAAC,gBAAgB,CAAC,OAAO,CAAC,CAAC;IACjD,CAAC;CACA;AA5CD,sCA4CC","file":"fixed-size-list.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/fixed-size-list.mjs b/igv_component/node_modules/apache-arrow/fb/fixed-size-list.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..f6e6867ab1e6d2009c99be11dcd2ed3d42474481
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/fixed-size-list.mjs
@@ -0,0 +1,44 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+export class FixedSizeList {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsFixedSizeList(bb, obj) {
+        return (obj || new FixedSizeList()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsFixedSizeList(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new FixedSizeList()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * Number of list items per value
+     */
+    listSize() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt32(this.bb_pos + offset) : 0;
+    }
+    static startFixedSizeList(builder) {
+        builder.startObject(1);
+    }
+    static addListSize(builder, listSize) {
+        builder.addFieldInt32(0, listSize, 0);
+    }
+    static endFixedSizeList(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createFixedSizeList(builder, listSize) {
+        FixedSizeList.startFixedSizeList(builder);
+        FixedSizeList.addListSize(builder, listSize);
+        return FixedSizeList.endFixedSizeList(builder);
+    }
+}
+
+//# sourceMappingURL=fixed-size-list.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/fixed-size-list.mjs.map b/igv_component/node_modules/apache-arrow/fb/fixed-size-list.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..de21f4d856816bd3c850a56b34652b0419fa2341
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/fixed-size-list.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/fixed-size-list.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,MAAM,OAAO,aAAa;IAA1B;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA0Cb,CAAC;IAzCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,sBAAsB,CAAC,EAAyB,EAAE,GAAkB;QACzE,OAAO,CAAC,GAAG,IAAI,IAAI,aAAa,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC9F,CAAC;IAED,MAAM,CAAC,kCAAkC,CAAC,EAAyB,EAAE,GAAkB;QACrF,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,aAAa,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC9F,CAAC;IAED;;OAEG;IACH,QAAQ;QACN,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAC/D,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B;QACnD,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,QAAe;QAC7D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACxC,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,OAA2B;QACjD,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,mBAAmB,CAAC,OAA2B,EAAE,QAAe;QACrE,aAAa,CAAC,kBAAkB,CAAC,OAAO,CAAC,CAAC;QAC1C,aAAa,CAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,CAAC,CAAC;QAC7C,OAAO,aAAa,CAAC,gBAAgB,CAAC,OAAO,CAAC,CAAC;IACjD,CAAC;CACA","file":"fixed-size-list.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/floating-point.d.ts b/igv_component/node_modules/apache-arrow/fb/floating-point.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b2b0747f6b754b623a57db2aff88cd0c16251c46
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/floating-point.d.ts
@@ -0,0 +1,14 @@
+import * as flatbuffers from 'flatbuffers';
+import { Precision } from './precision.js';
+export declare class FloatingPoint {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): FloatingPoint;
+    static getRootAsFloatingPoint(bb: flatbuffers.ByteBuffer, obj?: FloatingPoint): FloatingPoint;
+    static getSizePrefixedRootAsFloatingPoint(bb: flatbuffers.ByteBuffer, obj?: FloatingPoint): FloatingPoint;
+    precision(): Precision;
+    static startFloatingPoint(builder: flatbuffers.Builder): void;
+    static addPrecision(builder: flatbuffers.Builder, precision: Precision): void;
+    static endFloatingPoint(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createFloatingPoint(builder: flatbuffers.Builder, precision: Precision): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/floating-point.d.ts.map b/igv_component/node_modules/apache-arrow/fb/floating-point.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..90c864701a71555540f2296c8bd4556f3d749356
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/floating-point.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/floating-point.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,SAAS,EAAE,MAAM,gBAAgB,CAAC;AAG3C,qBAAa,aAAa;IACxB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,aAAa;IAMzD,MAAM,CAAC,sBAAsB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,aAAa,GAAE,aAAa;IAI1F,MAAM,CAAC,kCAAkC,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,aAAa,GAAE,aAAa;IAKtG,SAAS,IAAG,SAAS;IAKrB,MAAM,CAAC,kBAAkB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAIrD,MAAM,CAAC,YAAY,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,SAAS,EAAC,SAAS;IAIpE,MAAM,CAAC,gBAAgB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKvE,MAAM,CAAC,mBAAmB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,SAAS,EAAC,SAAS,GAAE,WAAW,CAAC,MAAM;CAK9F","file":"floating-point.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/floating-point.js b/igv_component/node_modules/apache-arrow/fb/floating-point.js
new file mode 100644
index 0000000000000000000000000000000000000000..2e70db304737d96214215288f88c5e3599ed4da2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/floating-point.js
@@ -0,0 +1,47 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.FloatingPoint = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const precision_js_1 = require("./precision.js");
+class FloatingPoint {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsFloatingPoint(bb, obj) {
+        return (obj || new FloatingPoint()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsFloatingPoint(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new FloatingPoint()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    precision() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : precision_js_1.Precision.HALF;
+    }
+    static startFloatingPoint(builder) {
+        builder.startObject(1);
+    }
+    static addPrecision(builder, precision) {
+        builder.addFieldInt16(0, precision, precision_js_1.Precision.HALF);
+    }
+    static endFloatingPoint(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createFloatingPoint(builder, precision) {
+        FloatingPoint.startFloatingPoint(builder);
+        FloatingPoint.addPrecision(builder, precision);
+        return FloatingPoint.endFloatingPoint(builder);
+    }
+}
+exports.FloatingPoint = FloatingPoint;
+
+//# sourceMappingURL=floating-point.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/floating-point.js.map b/igv_component/node_modules/apache-arrow/fb/floating-point.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..0642f644d44dc1f5fda028135dd4315e11a5e443
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/floating-point.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/floating-point.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,iDAA2C;AAG3C,MAAa,aAAa;IAA1B;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAuCb,CAAC;IAtCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,sBAAsB,CAAC,EAAyB,EAAE,GAAkB;QACzE,OAAO,CAAC,GAAG,IAAI,IAAI,aAAa,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC9F,CAAC;IAED,MAAM,CAAC,kCAAkC,CAAC,EAAyB,EAAE,GAAkB;QACrF,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,aAAa,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC9F,CAAC;IAED,SAAS;QACP,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,wBAAS,CAAC,IAAI,CAAC;IAC5E,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B;QACnD,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B,EAAE,SAAmB;QAClE,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,SAAS,EAAE,wBAAS,CAAC,IAAI,CAAC,CAAC;IACtD,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,OAA2B;QACjD,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,mBAAmB,CAAC,OAA2B,EAAE,SAAmB;QACzE,aAAa,CAAC,kBAAkB,CAAC,OAAO,CAAC,CAAC;QAC1C,aAAa,CAAC,YAAY,CAAC,OAAO,EAAE,SAAS,CAAC,CAAC;QAC/C,OAAO,aAAa,CAAC,gBAAgB,CAAC,OAAO,CAAC,CAAC;IACjD,CAAC;CACA;AAzCD,sCAyCC","file":"floating-point.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/floating-point.mjs b/igv_component/node_modules/apache-arrow/fb/floating-point.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..ff14667b7fb66dc4284fe44a51185eefa31e87db
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/floating-point.mjs
@@ -0,0 +1,42 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { Precision } from './precision.mjs';
+export class FloatingPoint {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsFloatingPoint(bb, obj) {
+        return (obj || new FloatingPoint()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsFloatingPoint(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new FloatingPoint()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    precision() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : Precision.HALF;
+    }
+    static startFloatingPoint(builder) {
+        builder.startObject(1);
+    }
+    static addPrecision(builder, precision) {
+        builder.addFieldInt16(0, precision, Precision.HALF);
+    }
+    static endFloatingPoint(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createFloatingPoint(builder, precision) {
+        FloatingPoint.startFloatingPoint(builder);
+        FloatingPoint.addPrecision(builder, precision);
+        return FloatingPoint.endFloatingPoint(builder);
+    }
+}
+
+//# sourceMappingURL=floating-point.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/floating-point.mjs.map b/igv_component/node_modules/apache-arrow/fb/floating-point.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..22441419c90e0bc2349ed27770e941c3c3499edb
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/floating-point.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/floating-point.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,SAAS,EAAE,MAAM,gBAAgB,CAAC;AAG3C,MAAM,OAAO,aAAa;IAA1B;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAuCb,CAAC;IAtCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,sBAAsB,CAAC,EAAyB,EAAE,GAAkB;QACzE,OAAO,CAAC,GAAG,IAAI,IAAI,aAAa,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC9F,CAAC;IAED,MAAM,CAAC,kCAAkC,CAAC,EAAyB,EAAE,GAAkB;QACrF,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,aAAa,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC9F,CAAC;IAED,SAAS;QACP,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,SAAS,CAAC,IAAI,CAAC;IAC5E,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B;QACnD,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B,EAAE,SAAmB;QAClE,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,SAAS,EAAE,SAAS,CAAC,IAAI,CAAC,CAAC;IACtD,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,OAA2B;QACjD,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,mBAAmB,CAAC,OAA2B,EAAE,SAAmB;QACzE,aAAa,CAAC,kBAAkB,CAAC,OAAO,CAAC,CAAC;QAC1C,aAAa,CAAC,YAAY,CAAC,OAAO,EAAE,SAAS,CAAC,CAAC;QAC/C,OAAO,aAAa,CAAC,gBAAgB,CAAC,OAAO,CAAC,CAAC;IACjD,CAAC;CACA","file":"floating-point.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/footer.d.ts b/igv_component/node_modules/apache-arrow/fb/footer.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d7af28137fd5b798c9042508c9da6a65c3006fdd
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/footer.d.ts
@@ -0,0 +1,41 @@
+import * as flatbuffers from 'flatbuffers';
+import { Block } from './block.js';
+import { KeyValue } from './key-value.js';
+import { MetadataVersion } from './metadata-version.js';
+import { Schema } from './schema.js';
+/**
+ * ----------------------------------------------------------------------
+ * Arrow File metadata
+ *
+ */
+export declare class Footer {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Footer;
+    static getRootAsFooter(bb: flatbuffers.ByteBuffer, obj?: Footer): Footer;
+    static getSizePrefixedRootAsFooter(bb: flatbuffers.ByteBuffer, obj?: Footer): Footer;
+    version(): MetadataVersion;
+    schema(obj?: Schema): Schema | null;
+    dictionaries(index: number, obj?: Block): Block | null;
+    dictionariesLength(): number;
+    recordBatches(index: number, obj?: Block): Block | null;
+    recordBatchesLength(): number;
+    /**
+     * User-defined metadata
+     */
+    customMetadata(index: number, obj?: KeyValue): KeyValue | null;
+    customMetadataLength(): number;
+    static startFooter(builder: flatbuffers.Builder): void;
+    static addVersion(builder: flatbuffers.Builder, version: MetadataVersion): void;
+    static addSchema(builder: flatbuffers.Builder, schemaOffset: flatbuffers.Offset): void;
+    static addDictionaries(builder: flatbuffers.Builder, dictionariesOffset: flatbuffers.Offset): void;
+    static startDictionariesVector(builder: flatbuffers.Builder, numElems: number): void;
+    static addRecordBatches(builder: flatbuffers.Builder, recordBatchesOffset: flatbuffers.Offset): void;
+    static startRecordBatchesVector(builder: flatbuffers.Builder, numElems: number): void;
+    static addCustomMetadata(builder: flatbuffers.Builder, customMetadataOffset: flatbuffers.Offset): void;
+    static createCustomMetadataVector(builder: flatbuffers.Builder, data: flatbuffers.Offset[]): flatbuffers.Offset;
+    static startCustomMetadataVector(builder: flatbuffers.Builder, numElems: number): void;
+    static endFooter(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static finishFooterBuffer(builder: flatbuffers.Builder, offset: flatbuffers.Offset): void;
+    static finishSizePrefixedFooterBuffer(builder: flatbuffers.Builder, offset: flatbuffers.Offset): void;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/footer.d.ts.map b/igv_component/node_modules/apache-arrow/fb/footer.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..567deb1e84fe79da80192652a45df5b2746e22c4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/footer.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/footer.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,KAAK,EAAE,MAAM,YAAY,CAAC;AACnC,OAAO,EAAE,QAAQ,EAAE,MAAM,gBAAgB,CAAC;AAC1C,OAAO,EAAE,eAAe,EAAE,MAAM,uBAAuB,CAAC;AACxD,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AAGrC;;;;GAIG;AACH,qBAAa,MAAM;IACjB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,MAAM;IAMlD,MAAM,CAAC,eAAe,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,MAAM,GAAE,MAAM;IAIrE,MAAM,CAAC,2BAA2B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,MAAM,GAAE,MAAM;IAKjF,OAAO,IAAG,eAAe;IAKzB,MAAM,CAAC,GAAG,CAAC,EAAC,MAAM,GAAE,MAAM,GAAC,IAAI;IAK/B,YAAY,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,CAAC,EAAC,KAAK,GAAE,KAAK,GAAC,IAAI;IAKlD,kBAAkB,IAAG,MAAM;IAK3B,aAAa,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,CAAC,EAAC,KAAK,GAAE,KAAK,GAAC,IAAI;IAKnD,mBAAmB,IAAG,MAAM;IAK5B;;OAEG;IACH,cAAc,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,CAAC,EAAC,QAAQ,GAAE,QAAQ,GAAC,IAAI;IAK1D,oBAAoB,IAAG,MAAM;IAK7B,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI9C,MAAM,CAAC,UAAU,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,OAAO,EAAC,eAAe;IAItE,MAAM,CAAC,SAAS,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,YAAY,EAAC,WAAW,CAAC,MAAM;IAI7E,MAAM,CAAC,eAAe,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,kBAAkB,EAAC,WAAW,CAAC,MAAM;IAIzF,MAAM,CAAC,uBAAuB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAI3E,MAAM,CAAC,gBAAgB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,mBAAmB,EAAC,WAAW,CAAC,MAAM;IAI3F,MAAM,CAAC,wBAAwB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAI5E,MAAM,CAAC,iBAAiB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,oBAAoB,EAAC,WAAW,CAAC,MAAM;IAI7F,MAAM,CAAC,0BAA0B,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,WAAW,CAAC,MAAM,EAAE,GAAE,WAAW,CAAC,MAAM;IAQ5G,MAAM,CAAC,yBAAyB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAI7E,MAAM,CAAC,SAAS,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKhE,MAAM,CAAC,kBAAkB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,MAAM,EAAC,WAAW,CAAC,MAAM;IAIhF,MAAM,CAAC,8BAA8B,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,MAAM,EAAC,WAAW,CAAC,MAAM;CAI3F","file":"footer.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/footer.js b/igv_component/node_modules/apache-arrow/fb/footer.js
new file mode 100644
index 0000000000000000000000000000000000000000..d2d910780d8f728d0f94332a81d7b5f1af5763f9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/footer.js
@@ -0,0 +1,115 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Footer = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const block_js_1 = require("./block.js");
+const key_value_js_1 = require("./key-value.js");
+const metadata_version_js_1 = require("./metadata-version.js");
+const schema_js_1 = require("./schema.js");
+/**
+ * ----------------------------------------------------------------------
+ * Arrow File metadata
+ *
+ */
+class Footer {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsFooter(bb, obj) {
+        return (obj || new Footer()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsFooter(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Footer()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    version() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : metadata_version_js_1.MetadataVersion.V1;
+    }
+    schema(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? (obj || new schema_js_1.Schema()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    dictionaries(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? (obj || new block_js_1.Block()).__init(this.bb.__vector(this.bb_pos + offset) + index * 24, this.bb) : null;
+    }
+    dictionariesLength() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    recordBatches(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? (obj || new block_js_1.Block()).__init(this.bb.__vector(this.bb_pos + offset) + index * 24, this.bb) : null;
+    }
+    recordBatchesLength() {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * User-defined metadata
+     */
+    customMetadata(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? (obj || new key_value_js_1.KeyValue()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
+    }
+    customMetadataLength() {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    static startFooter(builder) {
+        builder.startObject(5);
+    }
+    static addVersion(builder, version) {
+        builder.addFieldInt16(0, version, metadata_version_js_1.MetadataVersion.V1);
+    }
+    static addSchema(builder, schemaOffset) {
+        builder.addFieldOffset(1, schemaOffset, 0);
+    }
+    static addDictionaries(builder, dictionariesOffset) {
+        builder.addFieldOffset(2, dictionariesOffset, 0);
+    }
+    static startDictionariesVector(builder, numElems) {
+        builder.startVector(24, numElems, 8);
+    }
+    static addRecordBatches(builder, recordBatchesOffset) {
+        builder.addFieldOffset(3, recordBatchesOffset, 0);
+    }
+    static startRecordBatchesVector(builder, numElems) {
+        builder.startVector(24, numElems, 8);
+    }
+    static addCustomMetadata(builder, customMetadataOffset) {
+        builder.addFieldOffset(4, customMetadataOffset, 0);
+    }
+    static createCustomMetadataVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addOffset(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startCustomMetadataVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static endFooter(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static finishFooterBuffer(builder, offset) {
+        builder.finish(offset);
+    }
+    static finishSizePrefixedFooterBuffer(builder, offset) {
+        builder.finish(offset, undefined, true);
+    }
+}
+exports.Footer = Footer;
+
+//# sourceMappingURL=footer.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/footer.js.map b/igv_component/node_modules/apache-arrow/fb/footer.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..952ab8a9115947c3de30b1e8b93c6ca7fe844172
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/footer.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/footer.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,yCAAmC;AACnC,iDAA0C;AAC1C,+DAAwD;AACxD,2CAAqC;AAGrC;;;;GAIG;AACH,MAAa,MAAM;IAAnB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAoHb,CAAC;IAnHD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,EAAyB,EAAE,GAAW;QAC3D,OAAO,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACvF,CAAC;IAED,MAAM,CAAC,2BAA2B,CAAC,EAAyB,EAAE,GAAW;QACvE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACvF,CAAC;IAED,OAAO;QACL,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,qCAAe,CAAC,EAAE,CAAC;IAChF,CAAC;IAED,MAAM,CAAC,GAAW;QAChB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,kBAAM,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IAC3G,CAAC;IAED,YAAY,CAAC,KAAa,EAAE,GAAU;QACpC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,gBAAK,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,EAAE,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACrH,CAAC;IAED,kBAAkB;QAChB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED,aAAa,CAAC,KAAa,EAAE,GAAU;QACrC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,gBAAK,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,EAAE,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACrH,CAAC;IAED,mBAAmB;QACjB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED;;OAEG;IACH,cAAc,CAAC,KAAa,EAAE,GAAa;QACzC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,uBAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,CAAC,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IAC5I,CAAC;IAED,oBAAoB;QAClB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B;QAC5C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B,EAAE,OAAuB;QACpE,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,OAAO,EAAE,qCAAe,CAAC,EAAE,CAAC,CAAC;IACxD,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B,EAAE,YAA+B;QAC3E,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,YAAY,EAAE,CAAC,CAAC,CAAC;IAC7C,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,OAA2B,EAAE,kBAAqC;QACvF,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,kBAAkB,EAAE,CAAC,CAAC,CAAC;IACnD,CAAC;IAED,MAAM,CAAC,uBAAuB,CAAC,OAA2B,EAAE,QAAe;QACzE,OAAO,CAAC,WAAW,CAAC,EAAE,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACvC,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,OAA2B,EAAE,mBAAsC;QACzF,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,mBAAmB,EAAE,CAAC,CAAC,CAAC;IACpD,CAAC;IAED,MAAM,CAAC,wBAAwB,CAAC,OAA2B,EAAE,QAAe;QAC1E,OAAO,CAAC,WAAW,CAAC,EAAE,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACvC,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,OAA2B,EAAE,oBAAuC;QAC3F,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,oBAAoB,EAAE,CAAC,CAAC,CAAC;IACrD,CAAC;IAED,MAAM,CAAC,0BAA0B,CAAC,OAA2B,EAAE,IAAyB;QACtF,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACvC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACzC,OAAO,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC,CAAE,CAAC,CAAC;SAC7B;QACD,OAAO,OAAO,CAAC,SAAS,EAAE,CAAC;IAC7B,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,OAA2B,EAAE,QAAe;QAC3E,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACtC,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B,EAAE,MAAyB;QAC9E,OAAO,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,8BAA8B,CAAC,OAA2B,EAAE,MAAyB;QAC1F,OAAO,CAAC,MAAM,CAAC,MAAM,EAAE,SAAS,EAAE,IAAI,CAAC,CAAC;IAC1C,CAAC;CAEA;AAtHD,wBAsHC","file":"footer.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/footer.mjs b/igv_component/node_modules/apache-arrow/fb/footer.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..3bec93ef2c2966c4b1766f824199c6ab91e9934e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/footer.mjs
@@ -0,0 +1,110 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { Block } from './block.mjs';
+import { KeyValue } from './key-value.mjs';
+import { MetadataVersion } from './metadata-version.mjs';
+import { Schema } from './schema.mjs';
+/**
+ * ----------------------------------------------------------------------
+ * Arrow File metadata
+ *
+ */
+export class Footer {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsFooter(bb, obj) {
+        return (obj || new Footer()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsFooter(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Footer()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    version() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : MetadataVersion.V1;
+    }
+    schema(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? (obj || new Schema()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    dictionaries(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? (obj || new Block()).__init(this.bb.__vector(this.bb_pos + offset) + index * 24, this.bb) : null;
+    }
+    dictionariesLength() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    recordBatches(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? (obj || new Block()).__init(this.bb.__vector(this.bb_pos + offset) + index * 24, this.bb) : null;
+    }
+    recordBatchesLength() {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * User-defined metadata
+     */
+    customMetadata(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? (obj || new KeyValue()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
+    }
+    customMetadataLength() {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    static startFooter(builder) {
+        builder.startObject(5);
+    }
+    static addVersion(builder, version) {
+        builder.addFieldInt16(0, version, MetadataVersion.V1);
+    }
+    static addSchema(builder, schemaOffset) {
+        builder.addFieldOffset(1, schemaOffset, 0);
+    }
+    static addDictionaries(builder, dictionariesOffset) {
+        builder.addFieldOffset(2, dictionariesOffset, 0);
+    }
+    static startDictionariesVector(builder, numElems) {
+        builder.startVector(24, numElems, 8);
+    }
+    static addRecordBatches(builder, recordBatchesOffset) {
+        builder.addFieldOffset(3, recordBatchesOffset, 0);
+    }
+    static startRecordBatchesVector(builder, numElems) {
+        builder.startVector(24, numElems, 8);
+    }
+    static addCustomMetadata(builder, customMetadataOffset) {
+        builder.addFieldOffset(4, customMetadataOffset, 0);
+    }
+    static createCustomMetadataVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addOffset(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startCustomMetadataVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static endFooter(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static finishFooterBuffer(builder, offset) {
+        builder.finish(offset);
+    }
+    static finishSizePrefixedFooterBuffer(builder, offset) {
+        builder.finish(offset, undefined, true);
+    }
+}
+
+//# sourceMappingURL=footer.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/footer.mjs.map b/igv_component/node_modules/apache-arrow/fb/footer.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..51437ce15bcff1e4f1ab682ff7de3ca704301e41
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/footer.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/footer.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,KAAK,EAAE,MAAM,YAAY,CAAC;AACnC,OAAO,EAAE,QAAQ,EAAE,MAAM,gBAAgB,CAAC;AAC1C,OAAO,EAAE,eAAe,EAAE,MAAM,uBAAuB,CAAC;AACxD,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AAGrC;;;;GAIG;AACH,MAAM,OAAO,MAAM;IAAnB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAoHb,CAAC;IAnHD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,EAAyB,EAAE,GAAW;QAC3D,OAAO,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACvF,CAAC;IAED,MAAM,CAAC,2BAA2B,CAAC,EAAyB,EAAE,GAAW;QACvE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACvF,CAAC;IAED,OAAO;QACL,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,eAAe,CAAC,EAAE,CAAC;IAChF,CAAC;IAED,MAAM,CAAC,GAAW;QAChB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IAC3G,CAAC;IAED,YAAY,CAAC,KAAa,EAAE,GAAU;QACpC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,KAAK,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,EAAE,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACrH,CAAC;IAED,kBAAkB;QAChB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED,aAAa,CAAC,KAAa,EAAE,GAAU;QACrC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,KAAK,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,EAAE,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACrH,CAAC;IAED,mBAAmB;QACjB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED;;OAEG;IACH,cAAc,CAAC,KAAa,EAAE,GAAa;QACzC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,QAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,CAAC,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IAC5I,CAAC;IAED,oBAAoB;QAClB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B;QAC5C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B,EAAE,OAAuB;QACpE,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,OAAO,EAAE,eAAe,CAAC,EAAE,CAAC,CAAC;IACxD,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B,EAAE,YAA+B;QAC3E,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,YAAY,EAAE,CAAC,CAAC,CAAC;IAC7C,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,OAA2B,EAAE,kBAAqC;QACvF,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,kBAAkB,EAAE,CAAC,CAAC,CAAC;IACnD,CAAC;IAED,MAAM,CAAC,uBAAuB,CAAC,OAA2B,EAAE,QAAe;QACzE,OAAO,CAAC,WAAW,CAAC,EAAE,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACvC,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,OAA2B,EAAE,mBAAsC;QACzF,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,mBAAmB,EAAE,CAAC,CAAC,CAAC;IACpD,CAAC;IAED,MAAM,CAAC,wBAAwB,CAAC,OAA2B,EAAE,QAAe;QAC1E,OAAO,CAAC,WAAW,CAAC,EAAE,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACvC,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,OAA2B,EAAE,oBAAuC;QAC3F,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,oBAAoB,EAAE,CAAC,CAAC,CAAC;IACrD,CAAC;IAED,MAAM,CAAC,0BAA0B,CAAC,OAA2B,EAAE,IAAyB;QACtF,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACvC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACzC,OAAO,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC,CAAE,CAAC,CAAC;SAC7B;QACD,OAAO,OAAO,CAAC,SAAS,EAAE,CAAC;IAC7B,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,OAA2B,EAAE,QAAe;QAC3E,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACtC,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B,EAAE,MAAyB;QAC9E,OAAO,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,8BAA8B,CAAC,OAA2B,EAAE,MAAyB;QAC1F,OAAO,CAAC,MAAM,CAAC,MAAM,EAAE,SAAS,EAAE,IAAI,CAAC,CAAC;IAC1C,CAAC;CAEA","file":"footer.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/int.d.ts b/igv_component/node_modules/apache-arrow/fb/int.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..1aefa69e74025961c842794886181f25464815be
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/int.d.ts
@@ -0,0 +1,15 @@
+import * as flatbuffers from 'flatbuffers';
+export declare class Int {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Int;
+    static getRootAsInt(bb: flatbuffers.ByteBuffer, obj?: Int): Int;
+    static getSizePrefixedRootAsInt(bb: flatbuffers.ByteBuffer, obj?: Int): Int;
+    bitWidth(): number;
+    isSigned(): boolean;
+    static startInt(builder: flatbuffers.Builder): void;
+    static addBitWidth(builder: flatbuffers.Builder, bitWidth: number): void;
+    static addIsSigned(builder: flatbuffers.Builder, isSigned: boolean): void;
+    static endInt(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createInt(builder: flatbuffers.Builder, bitWidth: number, isSigned: boolean): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/int.d.ts.map b/igv_component/node_modules/apache-arrow/fb/int.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..82fa5f7247a551b51bb2bdb2fd2876711e1fe99a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/int.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/int.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,qBAAa,GAAG;IACd,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,GAAG;IAM/C,MAAM,CAAC,YAAY,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,GAAG,GAAE,GAAG;IAI5D,MAAM,CAAC,wBAAwB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,GAAG,GAAE,GAAG;IAKxE,QAAQ,IAAG,MAAM;IAKjB,QAAQ,IAAG,OAAO;IAKlB,MAAM,CAAC,QAAQ,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI3C,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAI/D,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,OAAO;IAIhE,MAAM,CAAC,MAAM,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAK7D,MAAM,CAAC,SAAS,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM,EAAE,QAAQ,EAAC,OAAO,GAAE,WAAW,CAAC,MAAM;CAMlG","file":"int.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/int.js b/igv_component/node_modules/apache-arrow/fb/int.js
new file mode 100644
index 0000000000000000000000000000000000000000..a819c3d2187ff41a926d72ee62fd70c26c72b83e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/int.js
@@ -0,0 +1,54 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Int = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+class Int {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsInt(bb, obj) {
+        return (obj || new Int()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsInt(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Int()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    bitWidth() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt32(this.bb_pos + offset) : 0;
+    }
+    isSigned() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? !!this.bb.readInt8(this.bb_pos + offset) : false;
+    }
+    static startInt(builder) {
+        builder.startObject(2);
+    }
+    static addBitWidth(builder, bitWidth) {
+        builder.addFieldInt32(0, bitWidth, 0);
+    }
+    static addIsSigned(builder, isSigned) {
+        builder.addFieldInt8(1, +isSigned, +false);
+    }
+    static endInt(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createInt(builder, bitWidth, isSigned) {
+        Int.startInt(builder);
+        Int.addBitWidth(builder, bitWidth);
+        Int.addIsSigned(builder, isSigned);
+        return Int.endInt(builder);
+    }
+}
+exports.Int = Int;
+
+//# sourceMappingURL=int.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/int.js.map b/igv_component/node_modules/apache-arrow/fb/int.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..a310fde7907d11bdc0f697ce6ed8e6a9a49f795a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/int.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/int.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,MAAa,GAAG;IAAhB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAiDb,CAAC;IAhDD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,EAAyB,EAAE,GAAQ;QACrD,OAAO,CAAC,GAAG,IAAI,IAAI,GAAG,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACpF,CAAC;IAED,MAAM,CAAC,wBAAwB,CAAC,EAAyB,EAAE,GAAQ;QACjE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,GAAG,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACpF,CAAC;IAED,QAAQ;QACN,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAC/D,CAAC;IAED,QAAQ;QACN,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC;IACpE,CAAC;IAED,MAAM,CAAC,QAAQ,CAAC,OAA2B;QACzC,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,QAAe;QAC7D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACxC,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,QAAgB;QAC9D,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,KAAK,CAAC,CAAC;IAC7C,CAAC;IAED,MAAM,CAAC,MAAM,CAAC,OAA2B;QACvC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B,EAAE,QAAe,EAAE,QAAgB;QAC7E,GAAG,CAAC,QAAQ,CAAC,OAAO,CAAC,CAAC;QACtB,GAAG,CAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,CAAC,CAAC;QACnC,GAAG,CAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,CAAC,CAAC;QACnC,OAAO,GAAG,CAAC,MAAM,CAAC,OAAO,CAAC,CAAC;IAC7B,CAAC;CACA;AAnDD,kBAmDC","file":"int.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/int.mjs b/igv_component/node_modules/apache-arrow/fb/int.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..b05bc85b259d6d2b41f0a9b653b62db9a89ce82c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/int.mjs
@@ -0,0 +1,49 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+export class Int {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsInt(bb, obj) {
+        return (obj || new Int()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsInt(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Int()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    bitWidth() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt32(this.bb_pos + offset) : 0;
+    }
+    isSigned() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? !!this.bb.readInt8(this.bb_pos + offset) : false;
+    }
+    static startInt(builder) {
+        builder.startObject(2);
+    }
+    static addBitWidth(builder, bitWidth) {
+        builder.addFieldInt32(0, bitWidth, 0);
+    }
+    static addIsSigned(builder, isSigned) {
+        builder.addFieldInt8(1, +isSigned, +false);
+    }
+    static endInt(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createInt(builder, bitWidth, isSigned) {
+        Int.startInt(builder);
+        Int.addBitWidth(builder, bitWidth);
+        Int.addIsSigned(builder, isSigned);
+        return Int.endInt(builder);
+    }
+}
+
+//# sourceMappingURL=int.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/int.mjs.map b/igv_component/node_modules/apache-arrow/fb/int.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..ea96bef5a47dc2360c77d98bdef7f25239b5eefd
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/int.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/int.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,MAAM,OAAO,GAAG;IAAhB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAiDb,CAAC;IAhDD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,EAAyB,EAAE,GAAQ;QACrD,OAAO,CAAC,GAAG,IAAI,IAAI,GAAG,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACpF,CAAC;IAED,MAAM,CAAC,wBAAwB,CAAC,EAAyB,EAAE,GAAQ;QACjE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,GAAG,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACpF,CAAC;IAED,QAAQ;QACN,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAC/D,CAAC;IAED,QAAQ;QACN,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC;IACpE,CAAC;IAED,MAAM,CAAC,QAAQ,CAAC,OAA2B;QACzC,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,QAAe;QAC7D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACxC,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,QAAgB;QAC9D,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,KAAK,CAAC,CAAC;IAC7C,CAAC;IAED,MAAM,CAAC,MAAM,CAAC,OAA2B;QACvC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B,EAAE,QAAe,EAAE,QAAgB;QAC7E,GAAG,CAAC,QAAQ,CAAC,OAAO,CAAC,CAAC;QACtB,GAAG,CAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,CAAC,CAAC;QACnC,GAAG,CAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,CAAC,CAAC;QACnC,OAAO,GAAG,CAAC,MAAM,CAAC,OAAO,CAAC,CAAC;IAC7B,CAAC;CACA","file":"int.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/interval-unit.d.ts b/igv_component/node_modules/apache-arrow/fb/interval-unit.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..3d4c18d62455e4648d91c3b17207fe2ca27a10c1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/interval-unit.d.ts
@@ -0,0 +1,5 @@
+export declare enum IntervalUnit {
+    YEAR_MONTH = 0,
+    DAY_TIME = 1,
+    MONTH_DAY_NANO = 2
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/interval-unit.d.ts.map b/igv_component/node_modules/apache-arrow/fb/interval-unit.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..f97559c90a5717135253a8bc469d8b2a768ab1e6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/interval-unit.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/interval-unit.ts"],"names":[],"mappings":"AAEA,oBAAY,YAAY;IACtB,UAAU,IAAI;IACd,QAAQ,IAAI;IACZ,cAAc,IAAI;CACnB","file":"interval-unit.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/interval-unit.js b/igv_component/node_modules/apache-arrow/fb/interval-unit.js
new file mode 100644
index 0000000000000000000000000000000000000000..33ee2d2c840a0422566b10ae42a1b86357e86f84
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/interval-unit.js
@@ -0,0 +1,12 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.IntervalUnit = void 0;
+var IntervalUnit;
+(function (IntervalUnit) {
+    IntervalUnit[IntervalUnit["YEAR_MONTH"] = 0] = "YEAR_MONTH";
+    IntervalUnit[IntervalUnit["DAY_TIME"] = 1] = "DAY_TIME";
+    IntervalUnit[IntervalUnit["MONTH_DAY_NANO"] = 2] = "MONTH_DAY_NANO";
+})(IntervalUnit = exports.IntervalUnit || (exports.IntervalUnit = {}));
+
+//# sourceMappingURL=interval-unit.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/interval-unit.js.map b/igv_component/node_modules/apache-arrow/fb/interval-unit.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..1f4dcbc6a1196dd0c2a870f0d645ff58f9907c48
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/interval-unit.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/interval-unit.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAErE,IAAY,YAIX;AAJD,WAAY,YAAY;IACtB,2DAAc,CAAA;IACd,uDAAY,CAAA;IACZ,mEAAkB,CAAA;AACpB,CAAC,EAJW,YAAY,GAAZ,oBAAY,KAAZ,oBAAY,QAIvB","file":"interval-unit.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/interval-unit.mjs b/igv_component/node_modules/apache-arrow/fb/interval-unit.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..df573c27d5105558314c49ff779f319812556df4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/interval-unit.mjs
@@ -0,0 +1,9 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+export var IntervalUnit;
+(function (IntervalUnit) {
+    IntervalUnit[IntervalUnit["YEAR_MONTH"] = 0] = "YEAR_MONTH";
+    IntervalUnit[IntervalUnit["DAY_TIME"] = 1] = "DAY_TIME";
+    IntervalUnit[IntervalUnit["MONTH_DAY_NANO"] = 2] = "MONTH_DAY_NANO";
+})(IntervalUnit || (IntervalUnit = {}));
+
+//# sourceMappingURL=interval-unit.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/interval-unit.mjs.map b/igv_component/node_modules/apache-arrow/fb/interval-unit.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..8a97e1a5dba983d5d0d3ff6532f13050ef9576bb
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/interval-unit.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/interval-unit.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,MAAM,CAAN,IAAY,YAIX;AAJD,WAAY,YAAY;IACtB,2DAAc,CAAA;IACd,uDAAY,CAAA;IACZ,mEAAkB,CAAA;AACpB,CAAC,EAJW,YAAY,KAAZ,YAAY,QAIvB","file":"interval-unit.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/interval.d.ts b/igv_component/node_modules/apache-arrow/fb/interval.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..c78074f4860e6f20a1cf807a6bf8f58eb4808a17
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/interval.d.ts
@@ -0,0 +1,14 @@
+import * as flatbuffers from 'flatbuffers';
+import { IntervalUnit } from './interval-unit.js';
+export declare class Interval {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Interval;
+    static getRootAsInterval(bb: flatbuffers.ByteBuffer, obj?: Interval): Interval;
+    static getSizePrefixedRootAsInterval(bb: flatbuffers.ByteBuffer, obj?: Interval): Interval;
+    unit(): IntervalUnit;
+    static startInterval(builder: flatbuffers.Builder): void;
+    static addUnit(builder: flatbuffers.Builder, unit: IntervalUnit): void;
+    static endInterval(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createInterval(builder: flatbuffers.Builder, unit: IntervalUnit): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/interval.d.ts.map b/igv_component/node_modules/apache-arrow/fb/interval.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..fb142606c02a74945b7b8092bd02a4dda5a2b39a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/interval.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/interval.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,YAAY,EAAE,MAAM,oBAAoB,CAAC;AAGlD,qBAAa,QAAQ;IACnB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,QAAQ;IAMpD,MAAM,CAAC,iBAAiB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,QAAQ,GAAE,QAAQ;IAI3E,MAAM,CAAC,6BAA6B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,QAAQ,GAAE,QAAQ;IAKvF,IAAI,IAAG,YAAY;IAKnB,MAAM,CAAC,aAAa,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAIhD,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,YAAY;IAI7D,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKlE,MAAM,CAAC,cAAc,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,YAAY,GAAE,WAAW,CAAC,MAAM;CAKvF","file":"interval.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/interval.js b/igv_component/node_modules/apache-arrow/fb/interval.js
new file mode 100644
index 0000000000000000000000000000000000000000..1c8fa3535dab6586a92c2d9e22603de943b9dc96
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/interval.js
@@ -0,0 +1,47 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Interval = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const interval_unit_js_1 = require("./interval-unit.js");
+class Interval {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsInterval(bb, obj) {
+        return (obj || new Interval()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsInterval(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Interval()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    unit() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : interval_unit_js_1.IntervalUnit.YEAR_MONTH;
+    }
+    static startInterval(builder) {
+        builder.startObject(1);
+    }
+    static addUnit(builder, unit) {
+        builder.addFieldInt16(0, unit, interval_unit_js_1.IntervalUnit.YEAR_MONTH);
+    }
+    static endInterval(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createInterval(builder, unit) {
+        Interval.startInterval(builder);
+        Interval.addUnit(builder, unit);
+        return Interval.endInterval(builder);
+    }
+}
+exports.Interval = Interval;
+
+//# sourceMappingURL=interval.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/interval.js.map b/igv_component/node_modules/apache-arrow/fb/interval.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..cb30b4bb9bc1e0fac843f7fc81493254b8e1e6a1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/interval.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/interval.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,yDAAkD;AAGlD,MAAa,QAAQ;IAArB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAuCb,CAAC;IAtCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,EAAyB,EAAE,GAAa;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,QAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACzF,CAAC;IAED,MAAM,CAAC,6BAA6B,CAAC,EAAyB,EAAE,GAAa;QAC3E,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,QAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACzF,CAAC;IAED,IAAI;QACF,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,+BAAY,CAAC,UAAU,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B;QAC9C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,IAAiB;QAC3D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,IAAI,EAAE,+BAAY,CAAC,UAAU,CAAC,CAAC;IAC1D,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B;QAC5C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B,EAAE,IAAiB;QAClE,QAAQ,CAAC,aAAa,CAAC,OAAO,CAAC,CAAC;QAChC,QAAQ,CAAC,OAAO,CAAC,OAAO,EAAE,IAAI,CAAC,CAAC;QAChC,OAAO,QAAQ,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;IACvC,CAAC;CACA;AAzCD,4BAyCC","file":"interval.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/interval.mjs b/igv_component/node_modules/apache-arrow/fb/interval.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..dcacae97bbb034e85ab273e6a33cce927a2e6a32
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/interval.mjs
@@ -0,0 +1,42 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { IntervalUnit } from './interval-unit.mjs';
+export class Interval {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsInterval(bb, obj) {
+        return (obj || new Interval()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsInterval(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Interval()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    unit() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : IntervalUnit.YEAR_MONTH;
+    }
+    static startInterval(builder) {
+        builder.startObject(1);
+    }
+    static addUnit(builder, unit) {
+        builder.addFieldInt16(0, unit, IntervalUnit.YEAR_MONTH);
+    }
+    static endInterval(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createInterval(builder, unit) {
+        Interval.startInterval(builder);
+        Interval.addUnit(builder, unit);
+        return Interval.endInterval(builder);
+    }
+}
+
+//# sourceMappingURL=interval.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/interval.mjs.map b/igv_component/node_modules/apache-arrow/fb/interval.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..094061fb0a4e2fd08267bee937a1791cf9625d02
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/interval.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/interval.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,YAAY,EAAE,MAAM,oBAAoB,CAAC;AAGlD,MAAM,OAAO,QAAQ;IAArB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAuCb,CAAC;IAtCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,EAAyB,EAAE,GAAa;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,QAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACzF,CAAC;IAED,MAAM,CAAC,6BAA6B,CAAC,EAAyB,EAAE,GAAa;QAC3E,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,QAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACzF,CAAC;IAED,IAAI;QACF,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,YAAY,CAAC,UAAU,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B;QAC9C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,IAAiB;QAC3D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,IAAI,EAAE,YAAY,CAAC,UAAU,CAAC,CAAC;IAC1D,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B;QAC5C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B,EAAE,IAAiB;QAClE,QAAQ,CAAC,aAAa,CAAC,OAAO,CAAC,CAAC;QAChC,QAAQ,CAAC,OAAO,CAAC,OAAO,EAAE,IAAI,CAAC,CAAC;QAChC,OAAO,QAAQ,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;IACvC,CAAC;CACA","file":"interval.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/key-value.d.ts b/igv_component/node_modules/apache-arrow/fb/key-value.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6f7597b4246f383c426e9fdfefd170df377aba8d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/key-value.d.ts
@@ -0,0 +1,22 @@
+import * as flatbuffers from 'flatbuffers';
+/**
+ * ----------------------------------------------------------------------
+ * user defined key value pairs to add custom metadata to arrow
+ * key namespacing is the responsibility of the user
+ */
+export declare class KeyValue {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): KeyValue;
+    static getRootAsKeyValue(bb: flatbuffers.ByteBuffer, obj?: KeyValue): KeyValue;
+    static getSizePrefixedRootAsKeyValue(bb: flatbuffers.ByteBuffer, obj?: KeyValue): KeyValue;
+    key(): string | null;
+    key(optionalEncoding: flatbuffers.Encoding): string | Uint8Array | null;
+    value(): string | null;
+    value(optionalEncoding: flatbuffers.Encoding): string | Uint8Array | null;
+    static startKeyValue(builder: flatbuffers.Builder): void;
+    static addKey(builder: flatbuffers.Builder, keyOffset: flatbuffers.Offset): void;
+    static addValue(builder: flatbuffers.Builder, valueOffset: flatbuffers.Offset): void;
+    static endKeyValue(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createKeyValue(builder: flatbuffers.Builder, keyOffset: flatbuffers.Offset, valueOffset: flatbuffers.Offset): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/key-value.d.ts.map b/igv_component/node_modules/apache-arrow/fb/key-value.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..042942b4d7d4da42670051102c508991a5b756a0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/key-value.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/key-value.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;;GAIG;AACH,qBAAa,QAAQ;IACnB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,QAAQ;IAMpD,MAAM,CAAC,iBAAiB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,QAAQ,GAAE,QAAQ;IAI3E,MAAM,CAAC,6BAA6B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,QAAQ,GAAE,QAAQ;IAKvF,GAAG,IAAG,MAAM,GAAC,IAAI;IACjB,GAAG,CAAC,gBAAgB,EAAC,WAAW,CAAC,QAAQ,GAAE,MAAM,GAAC,UAAU,GAAC,IAAI;IAMjE,KAAK,IAAG,MAAM,GAAC,IAAI;IACnB,KAAK,CAAC,gBAAgB,EAAC,WAAW,CAAC,QAAQ,GAAE,MAAM,GAAC,UAAU,GAAC,IAAI;IAMnE,MAAM,CAAC,aAAa,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAIhD,MAAM,CAAC,MAAM,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,SAAS,EAAC,WAAW,CAAC,MAAM;IAIvE,MAAM,CAAC,QAAQ,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,WAAW,EAAC,WAAW,CAAC,MAAM;IAI3E,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKlE,MAAM,CAAC,cAAc,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,SAAS,EAAC,WAAW,CAAC,MAAM,EAAE,WAAW,EAAC,WAAW,CAAC,MAAM,GAAE,WAAW,CAAC,MAAM;CAMlI","file":"key-value.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/key-value.js b/igv_component/node_modules/apache-arrow/fb/key-value.js
new file mode 100644
index 0000000000000000000000000000000000000000..e91bf933556a65b3f34214741241063fd0741c1f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/key-value.js
@@ -0,0 +1,59 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.KeyValue = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+/**
+ * ----------------------------------------------------------------------
+ * user defined key value pairs to add custom metadata to arrow
+ * key namespacing is the responsibility of the user
+ */
+class KeyValue {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsKeyValue(bb, obj) {
+        return (obj || new KeyValue()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsKeyValue(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new KeyValue()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    key(optionalEncoding) {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.__string(this.bb_pos + offset, optionalEncoding) : null;
+    }
+    value(optionalEncoding) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__string(this.bb_pos + offset, optionalEncoding) : null;
+    }
+    static startKeyValue(builder) {
+        builder.startObject(2);
+    }
+    static addKey(builder, keyOffset) {
+        builder.addFieldOffset(0, keyOffset, 0);
+    }
+    static addValue(builder, valueOffset) {
+        builder.addFieldOffset(1, valueOffset, 0);
+    }
+    static endKeyValue(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createKeyValue(builder, keyOffset, valueOffset) {
+        KeyValue.startKeyValue(builder);
+        KeyValue.addKey(builder, keyOffset);
+        KeyValue.addValue(builder, valueOffset);
+        return KeyValue.endKeyValue(builder);
+    }
+}
+exports.KeyValue = KeyValue;
+
+//# sourceMappingURL=key-value.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/key-value.js.map b/igv_component/node_modules/apache-arrow/fb/key-value.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..a39f263e312bea6347c84eb66cbdb0d114ae9688
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/key-value.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/key-value.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C;;;;GAIG;AACH,MAAa,QAAQ;IAArB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAqDb,CAAC;IApDD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,EAAyB,EAAE,GAAa;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,QAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACzF,CAAC;IAED,MAAM,CAAC,6BAA6B,CAAC,EAAyB,EAAE,GAAa;QAC3E,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,QAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACzF,CAAC;IAID,GAAG,CAAC,gBAAqB;QACvB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,EAAE,gBAAgB,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACnF,CAAC;IAID,KAAK,CAAC,gBAAqB;QACzB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,EAAE,gBAAgB,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACnF,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B;QAC9C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,MAAM,CAAC,OAA2B,EAAE,SAA4B;QACrE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,SAAS,EAAE,CAAC,CAAC,CAAC;IAC1C,CAAC;IAED,MAAM,CAAC,QAAQ,CAAC,OAA2B,EAAE,WAA8B;QACzE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,WAAW,EAAE,CAAC,CAAC,CAAC;IAC5C,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B;QAC5C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B,EAAE,SAA4B,EAAE,WAA8B;QAC7G,QAAQ,CAAC,aAAa,CAAC,OAAO,CAAC,CAAC;QAChC,QAAQ,CAAC,MAAM,CAAC,OAAO,EAAE,SAAS,CAAC,CAAC;QACpC,QAAQ,CAAC,QAAQ,CAAC,OAAO,EAAE,WAAW,CAAC,CAAC;QACxC,OAAO,QAAQ,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;IACvC,CAAC;CACA;AAvDD,4BAuDC","file":"key-value.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/key-value.mjs b/igv_component/node_modules/apache-arrow/fb/key-value.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..354c955c466b921d450fb3956518fa219f495aad
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/key-value.mjs
@@ -0,0 +1,54 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+/**
+ * ----------------------------------------------------------------------
+ * user defined key value pairs to add custom metadata to arrow
+ * key namespacing is the responsibility of the user
+ */
+export class KeyValue {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsKeyValue(bb, obj) {
+        return (obj || new KeyValue()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsKeyValue(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new KeyValue()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    key(optionalEncoding) {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.__string(this.bb_pos + offset, optionalEncoding) : null;
+    }
+    value(optionalEncoding) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__string(this.bb_pos + offset, optionalEncoding) : null;
+    }
+    static startKeyValue(builder) {
+        builder.startObject(2);
+    }
+    static addKey(builder, keyOffset) {
+        builder.addFieldOffset(0, keyOffset, 0);
+    }
+    static addValue(builder, valueOffset) {
+        builder.addFieldOffset(1, valueOffset, 0);
+    }
+    static endKeyValue(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createKeyValue(builder, keyOffset, valueOffset) {
+        KeyValue.startKeyValue(builder);
+        KeyValue.addKey(builder, keyOffset);
+        KeyValue.addValue(builder, valueOffset);
+        return KeyValue.endKeyValue(builder);
+    }
+}
+
+//# sourceMappingURL=key-value.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/key-value.mjs.map b/igv_component/node_modules/apache-arrow/fb/key-value.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..58182bbdd1c28eb56934a2844c7e29a15227a612
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/key-value.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/key-value.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;;GAIG;AACH,MAAM,OAAO,QAAQ;IAArB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAqDb,CAAC;IApDD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,EAAyB,EAAE,GAAa;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,QAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACzF,CAAC;IAED,MAAM,CAAC,6BAA6B,CAAC,EAAyB,EAAE,GAAa;QAC3E,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,QAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACzF,CAAC;IAID,GAAG,CAAC,gBAAqB;QACvB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,EAAE,gBAAgB,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACnF,CAAC;IAID,KAAK,CAAC,gBAAqB;QACzB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,EAAE,gBAAgB,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACnF,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B;QAC9C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,MAAM,CAAC,OAA2B,EAAE,SAA4B;QACrE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,SAAS,EAAE,CAAC,CAAC,CAAC;IAC1C,CAAC;IAED,MAAM,CAAC,QAAQ,CAAC,OAA2B,EAAE,WAA8B;QACzE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,WAAW,EAAE,CAAC,CAAC,CAAC;IAC5C,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B;QAC5C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B,EAAE,SAA4B,EAAE,WAA8B;QAC7G,QAAQ,CAAC,aAAa,CAAC,OAAO,CAAC,CAAC;QAChC,QAAQ,CAAC,MAAM,CAAC,OAAO,EAAE,SAAS,CAAC,CAAC;QACpC,QAAQ,CAAC,QAAQ,CAAC,OAAO,EAAE,WAAW,CAAC,CAAC;QACxC,OAAO,QAAQ,CAAC,WAAW,CAAC,OAAO,CAAC,CAAC;IACvC,CAAC;CACA","file":"key-value.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/large-binary.d.ts b/igv_component/node_modules/apache-arrow/fb/large-binary.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..1561af46c2a24c18cc6172139d4cd8b2498ee157
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-binary.d.ts
@@ -0,0 +1,15 @@
+import * as flatbuffers from 'flatbuffers';
+/**
+ * Same as Binary, but with 64-bit offsets, allowing to represent
+ * extremely large data values.
+ */
+export declare class LargeBinary {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): LargeBinary;
+    static getRootAsLargeBinary(bb: flatbuffers.ByteBuffer, obj?: LargeBinary): LargeBinary;
+    static getSizePrefixedRootAsLargeBinary(bb: flatbuffers.ByteBuffer, obj?: LargeBinary): LargeBinary;
+    static startLargeBinary(builder: flatbuffers.Builder): void;
+    static endLargeBinary(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createLargeBinary(builder: flatbuffers.Builder): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/large-binary.d.ts.map b/igv_component/node_modules/apache-arrow/fb/large-binary.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..dfa9dd796884216bef26944001f2f461d6a764d9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-binary.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/large-binary.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;GAGG;AACH,qBAAa,WAAW;IACtB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,WAAW;IAMvD,MAAM,CAAC,oBAAoB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,WAAW,GAAE,WAAW;IAIpF,MAAM,CAAC,gCAAgC,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,WAAW,GAAE,WAAW;IAKhG,MAAM,CAAC,gBAAgB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAInD,MAAM,CAAC,cAAc,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKrE,MAAM,CAAC,iBAAiB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;CAIvE","file":"large-binary.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/large-binary.js b/igv_component/node_modules/apache-arrow/fb/large-binary.js
new file mode 100644
index 0000000000000000000000000000000000000000..5fdffcee71273dde42722505ca6a15fa0fabb536
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-binary.js
@@ -0,0 +1,42 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.LargeBinary = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+/**
+ * Same as Binary, but with 64-bit offsets, allowing to represent
+ * extremely large data values.
+ */
+class LargeBinary {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsLargeBinary(bb, obj) {
+        return (obj || new LargeBinary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsLargeBinary(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new LargeBinary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startLargeBinary(builder) {
+        builder.startObject(0);
+    }
+    static endLargeBinary(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createLargeBinary(builder) {
+        LargeBinary.startLargeBinary(builder);
+        return LargeBinary.endLargeBinary(builder);
+    }
+}
+exports.LargeBinary = LargeBinary;
+
+//# sourceMappingURL=large-binary.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/large-binary.js.map b/igv_component/node_modules/apache-arrow/fb/large-binary.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..92ffa5fc809fad0a618d0b36bd4bbbc7665a8f0e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-binary.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/large-binary.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C;;;GAGG;AACH,MAAa,WAAW;IAAxB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,oBAAoB,CAAC,EAAyB,EAAE,GAAgB;QACrE,OAAO,CAAC,GAAG,IAAI,IAAI,WAAW,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC5F,CAAC;IAED,MAAM,CAAC,gCAAgC,CAAC,EAAyB,EAAE,GAAgB;QACjF,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,WAAW,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC5F,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,OAA2B;QACjD,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B;QAC/C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,OAA2B;QAClD,WAAW,CAAC,gBAAgB,CAAC,OAAO,CAAC,CAAC;QACtC,OAAO,WAAW,CAAC,cAAc,CAAC,OAAO,CAAC,CAAC;IAC7C,CAAC;CACA;AA/BD,kCA+BC","file":"large-binary.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/large-binary.mjs b/igv_component/node_modules/apache-arrow/fb/large-binary.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..78b923b7d66ebaed479a00a1c882131736e916ce
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-binary.mjs
@@ -0,0 +1,37 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+/**
+ * Same as Binary, but with 64-bit offsets, allowing to represent
+ * extremely large data values.
+ */
+export class LargeBinary {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsLargeBinary(bb, obj) {
+        return (obj || new LargeBinary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsLargeBinary(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new LargeBinary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startLargeBinary(builder) {
+        builder.startObject(0);
+    }
+    static endLargeBinary(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createLargeBinary(builder) {
+        LargeBinary.startLargeBinary(builder);
+        return LargeBinary.endLargeBinary(builder);
+    }
+}
+
+//# sourceMappingURL=large-binary.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/large-binary.mjs.map b/igv_component/node_modules/apache-arrow/fb/large-binary.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..6aba6f39b1eca9a5453a0a67df9d9bef9d753577
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-binary.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/large-binary.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;GAGG;AACH,MAAM,OAAO,WAAW;IAAxB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,oBAAoB,CAAC,EAAyB,EAAE,GAAgB;QACrE,OAAO,CAAC,GAAG,IAAI,IAAI,WAAW,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC5F,CAAC;IAED,MAAM,CAAC,gCAAgC,CAAC,EAAyB,EAAE,GAAgB;QACjF,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,WAAW,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC5F,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,OAA2B;QACjD,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B;QAC/C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,OAA2B;QAClD,WAAW,CAAC,gBAAgB,CAAC,OAAO,CAAC,CAAC;QACtC,OAAO,WAAW,CAAC,cAAc,CAAC,OAAO,CAAC,CAAC;IAC7C,CAAC;CACA","file":"large-binary.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/large-list.d.ts b/igv_component/node_modules/apache-arrow/fb/large-list.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e35865c709ce874a2350ec1672a300f474bce647
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-list.d.ts
@@ -0,0 +1,15 @@
+import * as flatbuffers from 'flatbuffers';
+/**
+ * Same as List, but with 64-bit offsets, allowing to represent
+ * extremely large data values.
+ */
+export declare class LargeList {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): LargeList;
+    static getRootAsLargeList(bb: flatbuffers.ByteBuffer, obj?: LargeList): LargeList;
+    static getSizePrefixedRootAsLargeList(bb: flatbuffers.ByteBuffer, obj?: LargeList): LargeList;
+    static startLargeList(builder: flatbuffers.Builder): void;
+    static endLargeList(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createLargeList(builder: flatbuffers.Builder): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/large-list.d.ts.map b/igv_component/node_modules/apache-arrow/fb/large-list.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..04ee0067357ccf7534a98f77d1b0238e04b9acd6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-list.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/large-list.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;GAGG;AACH,qBAAa,SAAS;IACpB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,SAAS;IAMrD,MAAM,CAAC,kBAAkB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,SAAS,GAAE,SAAS;IAI9E,MAAM,CAAC,8BAA8B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,SAAS,GAAE,SAAS;IAK1F,MAAM,CAAC,cAAc,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAIjD,MAAM,CAAC,YAAY,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKnE,MAAM,CAAC,eAAe,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;CAIrE","file":"large-list.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/large-list.js b/igv_component/node_modules/apache-arrow/fb/large-list.js
new file mode 100644
index 0000000000000000000000000000000000000000..2dbd7c0b5d950d2d934831ef3ecff0d2a0edf665
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-list.js
@@ -0,0 +1,42 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.LargeList = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+/**
+ * Same as List, but with 64-bit offsets, allowing to represent
+ * extremely large data values.
+ */
+class LargeList {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsLargeList(bb, obj) {
+        return (obj || new LargeList()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsLargeList(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new LargeList()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startLargeList(builder) {
+        builder.startObject(0);
+    }
+    static endLargeList(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createLargeList(builder) {
+        LargeList.startLargeList(builder);
+        return LargeList.endLargeList(builder);
+    }
+}
+exports.LargeList = LargeList;
+
+//# sourceMappingURL=large-list.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/large-list.js.map b/igv_component/node_modules/apache-arrow/fb/large-list.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..f88c37e8984335e9fb8192e1d0b5634b1d7d18c5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-list.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/large-list.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C;;;GAGG;AACH,MAAa,SAAS;IAAtB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,EAAyB,EAAE,GAAc;QACjE,OAAO,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC1F,CAAC;IAED,MAAM,CAAC,8BAA8B,CAAC,EAAyB,EAAE,GAAc;QAC7E,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC1F,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B;QAC/C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B;QAC7C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,OAA2B;QAChD,SAAS,CAAC,cAAc,CAAC,OAAO,CAAC,CAAC;QAClC,OAAO,SAAS,CAAC,YAAY,CAAC,OAAO,CAAC,CAAC;IACzC,CAAC;CACA;AA/BD,8BA+BC","file":"large-list.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/large-list.mjs b/igv_component/node_modules/apache-arrow/fb/large-list.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..b2f9a4576506dab3308d9bbbd9ed7f1df958a978
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-list.mjs
@@ -0,0 +1,37 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+/**
+ * Same as List, but with 64-bit offsets, allowing to represent
+ * extremely large data values.
+ */
+export class LargeList {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsLargeList(bb, obj) {
+        return (obj || new LargeList()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsLargeList(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new LargeList()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startLargeList(builder) {
+        builder.startObject(0);
+    }
+    static endLargeList(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createLargeList(builder) {
+        LargeList.startLargeList(builder);
+        return LargeList.endLargeList(builder);
+    }
+}
+
+//# sourceMappingURL=large-list.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/large-list.mjs.map b/igv_component/node_modules/apache-arrow/fb/large-list.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..de5d83a0e487410eebbed3f8cca6ba881c4aea6f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-list.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/large-list.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;GAGG;AACH,MAAM,OAAO,SAAS;IAAtB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,EAAyB,EAAE,GAAc;QACjE,OAAO,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC1F,CAAC;IAED,MAAM,CAAC,8BAA8B,CAAC,EAAyB,EAAE,GAAc;QAC7E,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC1F,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B;QAC/C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B;QAC7C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,OAA2B;QAChD,SAAS,CAAC,cAAc,CAAC,OAAO,CAAC,CAAC;QAClC,OAAO,SAAS,CAAC,YAAY,CAAC,OAAO,CAAC,CAAC;IACzC,CAAC;CACA","file":"large-list.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/large-utf8.d.ts b/igv_component/node_modules/apache-arrow/fb/large-utf8.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..9bad9c2318da47ac774375816671ad9872acd21b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-utf8.d.ts
@@ -0,0 +1,15 @@
+import * as flatbuffers from 'flatbuffers';
+/**
+ * Same as Utf8, but with 64-bit offsets, allowing to represent
+ * extremely large data values.
+ */
+export declare class LargeUtf8 {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): LargeUtf8;
+    static getRootAsLargeUtf8(bb: flatbuffers.ByteBuffer, obj?: LargeUtf8): LargeUtf8;
+    static getSizePrefixedRootAsLargeUtf8(bb: flatbuffers.ByteBuffer, obj?: LargeUtf8): LargeUtf8;
+    static startLargeUtf8(builder: flatbuffers.Builder): void;
+    static endLargeUtf8(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createLargeUtf8(builder: flatbuffers.Builder): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/large-utf8.d.ts.map b/igv_component/node_modules/apache-arrow/fb/large-utf8.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..a5843e607af99b9c329babea910248d65bbb330a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-utf8.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/large-utf8.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;GAGG;AACH,qBAAa,SAAS;IACpB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,SAAS;IAMrD,MAAM,CAAC,kBAAkB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,SAAS,GAAE,SAAS;IAI9E,MAAM,CAAC,8BAA8B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,SAAS,GAAE,SAAS;IAK1F,MAAM,CAAC,cAAc,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAIjD,MAAM,CAAC,YAAY,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKnE,MAAM,CAAC,eAAe,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;CAIrE","file":"large-utf8.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/large-utf8.js b/igv_component/node_modules/apache-arrow/fb/large-utf8.js
new file mode 100644
index 0000000000000000000000000000000000000000..627139a1249806df883452ce4106319d038fa5c7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-utf8.js
@@ -0,0 +1,42 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.LargeUtf8 = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+/**
+ * Same as Utf8, but with 64-bit offsets, allowing to represent
+ * extremely large data values.
+ */
+class LargeUtf8 {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsLargeUtf8(bb, obj) {
+        return (obj || new LargeUtf8()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsLargeUtf8(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new LargeUtf8()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startLargeUtf8(builder) {
+        builder.startObject(0);
+    }
+    static endLargeUtf8(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createLargeUtf8(builder) {
+        LargeUtf8.startLargeUtf8(builder);
+        return LargeUtf8.endLargeUtf8(builder);
+    }
+}
+exports.LargeUtf8 = LargeUtf8;
+
+//# sourceMappingURL=large-utf8.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/large-utf8.js.map b/igv_component/node_modules/apache-arrow/fb/large-utf8.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..b0de4a1e4c2365619cc4e9498c89fb803c6cc2b6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-utf8.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/large-utf8.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C;;;GAGG;AACH,MAAa,SAAS;IAAtB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,EAAyB,EAAE,GAAc;QACjE,OAAO,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC1F,CAAC;IAED,MAAM,CAAC,8BAA8B,CAAC,EAAyB,EAAE,GAAc;QAC7E,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC1F,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B;QAC/C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B;QAC7C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,OAA2B;QAChD,SAAS,CAAC,cAAc,CAAC,OAAO,CAAC,CAAC;QAClC,OAAO,SAAS,CAAC,YAAY,CAAC,OAAO,CAAC,CAAC;IACzC,CAAC;CACA;AA/BD,8BA+BC","file":"large-utf8.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/large-utf8.mjs b/igv_component/node_modules/apache-arrow/fb/large-utf8.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..9dec8f763e146b03b21682468c10050d14b2bc76
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-utf8.mjs
@@ -0,0 +1,37 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+/**
+ * Same as Utf8, but with 64-bit offsets, allowing to represent
+ * extremely large data values.
+ */
+export class LargeUtf8 {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsLargeUtf8(bb, obj) {
+        return (obj || new LargeUtf8()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsLargeUtf8(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new LargeUtf8()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startLargeUtf8(builder) {
+        builder.startObject(0);
+    }
+    static endLargeUtf8(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createLargeUtf8(builder) {
+        LargeUtf8.startLargeUtf8(builder);
+        return LargeUtf8.endLargeUtf8(builder);
+    }
+}
+
+//# sourceMappingURL=large-utf8.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/large-utf8.mjs.map b/igv_component/node_modules/apache-arrow/fb/large-utf8.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..33fe92a7ca082dfbd836cb1320bd058b8a804b6d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/large-utf8.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/large-utf8.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;GAGG;AACH,MAAM,OAAO,SAAS;IAAtB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,EAAyB,EAAE,GAAc;QACjE,OAAO,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC1F,CAAC;IAED,MAAM,CAAC,8BAA8B,CAAC,EAAyB,EAAE,GAAc;QAC7E,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC1F,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B;QAC/C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B;QAC7C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,OAA2B;QAChD,SAAS,CAAC,cAAc,CAAC,OAAO,CAAC,CAAC;QAClC,OAAO,SAAS,CAAC,YAAY,CAAC,OAAO,CAAC,CAAC;IACzC,CAAC;CACA","file":"large-utf8.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/list.d.ts b/igv_component/node_modules/apache-arrow/fb/list.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..58432490aaaa7afce2d355c04dbfa0d55c0de191
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/list.d.ts
@@ -0,0 +1,11 @@
+import * as flatbuffers from 'flatbuffers';
+export declare class List {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): List;
+    static getRootAsList(bb: flatbuffers.ByteBuffer, obj?: List): List;
+    static getSizePrefixedRootAsList(bb: flatbuffers.ByteBuffer, obj?: List): List;
+    static startList(builder: flatbuffers.Builder): void;
+    static endList(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createList(builder: flatbuffers.Builder): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/list.d.ts.map b/igv_component/node_modules/apache-arrow/fb/list.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..d0bf9259ba9b16384ff30b8653614561a7e1fa9b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/list.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/list.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,qBAAa,IAAI;IACf,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,IAAI;IAMhD,MAAM,CAAC,aAAa,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,IAAI,GAAE,IAAI;IAI/D,MAAM,CAAC,yBAAyB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,IAAI,GAAE,IAAI;IAK3E,MAAM,CAAC,SAAS,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI5C,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAK9D,MAAM,CAAC,UAAU,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;CAIhE","file":"list.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/list.js b/igv_component/node_modules/apache-arrow/fb/list.js
new file mode 100644
index 0000000000000000000000000000000000000000..cafc5b1764a0fbd0b1f56c4d717ba9032b10199e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/list.js
@@ -0,0 +1,38 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.List = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+class List {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsList(bb, obj) {
+        return (obj || new List()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsList(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new List()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startList(builder) {
+        builder.startObject(0);
+    }
+    static endList(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createList(builder) {
+        List.startList(builder);
+        return List.endList(builder);
+    }
+}
+exports.List = List;
+
+//# sourceMappingURL=list.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/list.js.map b/igv_component/node_modules/apache-arrow/fb/list.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..0e888d2307d15c4d862b63f57f99ddbb974b5d04
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/list.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/list.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,MAAa,IAAI;IAAjB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,EAAyB,EAAE,GAAS;QACvD,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,EAAyB,EAAE,GAAS;QACnE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B;QACxC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B;QAC3C,IAAI,CAAC,SAAS,CAAC,OAAO,CAAC,CAAC;QACxB,OAAO,IAAI,CAAC,OAAO,CAAC,OAAO,CAAC,CAAC;IAC/B,CAAC;CACA;AA/BD,oBA+BC","file":"list.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/list.mjs b/igv_component/node_modules/apache-arrow/fb/list.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..63ddb6e7dadcad19523f92c82283144c23028986
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/list.mjs
@@ -0,0 +1,33 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+export class List {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsList(bb, obj) {
+        return (obj || new List()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsList(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new List()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startList(builder) {
+        builder.startObject(0);
+    }
+    static endList(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createList(builder) {
+        List.startList(builder);
+        return List.endList(builder);
+    }
+}
+
+//# sourceMappingURL=list.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/list.mjs.map b/igv_component/node_modules/apache-arrow/fb/list.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..87901fc5fb6bedbdf0a48195e4629a39d9ee0eec
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/list.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/list.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,MAAM,OAAO,IAAI;IAAjB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,EAAyB,EAAE,GAAS;QACvD,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,EAAyB,EAAE,GAAS;QACnE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B;QACxC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B;QAC3C,IAAI,CAAC,SAAS,CAAC,OAAO,CAAC,CAAC;QACxB,OAAO,IAAI,CAAC,OAAO,CAAC,OAAO,CAAC,CAAC;IAC/B,CAAC;CACA","file":"list.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/map.d.ts b/igv_component/node_modules/apache-arrow/fb/map.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..82652949f41039c5703e38cfdef7a5cd1736bfe9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/map.d.ts
@@ -0,0 +1,43 @@
+import * as flatbuffers from 'flatbuffers';
+/**
+ * A Map is a logical nested type that is represented as
+ *
+ * List<entries: Struct<key: K, value: V>>
+ *
+ * In this layout, the keys and values are each respectively contiguous. We do
+ * not constrain the key and value types, so the application is responsible
+ * for ensuring that the keys are hashable and unique. Whether the keys are sorted
+ * may be set in the metadata for this field.
+ *
+ * In a field with Map type, the field has a child Struct field, which then
+ * has two children: key type and the second the value type. The names of the
+ * child fields may be respectively "entries", "key", and "value", but this is
+ * not enforced.
+ *
+ * Map
+ * ```text
+ *   - child[0] entries: Struct
+ *     - child[0] key: K
+ *     - child[1] value: V
+ * ```
+ * Neither the "entries" field nor the "key" field may be nullable.
+ *
+ * The metadata is structured so that Arrow systems without special handling
+ * for Map can make Map an alias for List. The "layout" attribute for the Map
+ * field must have the same contents as a List.
+ */
+export declare class Map {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Map;
+    static getRootAsMap(bb: flatbuffers.ByteBuffer, obj?: Map): Map;
+    static getSizePrefixedRootAsMap(bb: flatbuffers.ByteBuffer, obj?: Map): Map;
+    /**
+     * Set to true if the keys within each value are sorted
+     */
+    keysSorted(): boolean;
+    static startMap(builder: flatbuffers.Builder): void;
+    static addKeysSorted(builder: flatbuffers.Builder, keysSorted: boolean): void;
+    static endMap(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createMap(builder: flatbuffers.Builder, keysSorted: boolean): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/map.d.ts.map b/igv_component/node_modules/apache-arrow/fb/map.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..b57295a993769551ebf9aebf24e67fcfbc0612ce
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/map.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/map.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;;;;;;;;;;;;;;;;;;;;;;;;GA0BG;AACH,qBAAa,GAAG;IACd,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,GAAG;IAM/C,MAAM,CAAC,YAAY,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,GAAG,GAAE,GAAG;IAI5D,MAAM,CAAC,wBAAwB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,GAAG,GAAE,GAAG;IAKxE;;OAEG;IACH,UAAU,IAAG,OAAO;IAKpB,MAAM,CAAC,QAAQ,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI3C,MAAM,CAAC,aAAa,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,UAAU,EAAC,OAAO;IAIpE,MAAM,CAAC,MAAM,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAK7D,MAAM,CAAC,SAAS,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,UAAU,EAAC,OAAO,GAAE,WAAW,CAAC,MAAM;CAKnF","file":"map.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/map.js b/igv_component/node_modules/apache-arrow/fb/map.js
new file mode 100644
index 0000000000000000000000000000000000000000..9dac8613f4cad79b891a1651c8057ec5729ec0f7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/map.js
@@ -0,0 +1,76 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Map = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+/**
+ * A Map is a logical nested type that is represented as
+ *
+ * List<entries: Struct<key: K, value: V>>
+ *
+ * In this layout, the keys and values are each respectively contiguous. We do
+ * not constrain the key and value types, so the application is responsible
+ * for ensuring that the keys are hashable and unique. Whether the keys are sorted
+ * may be set in the metadata for this field.
+ *
+ * In a field with Map type, the field has a child Struct field, which then
+ * has two children: key type and the second the value type. The names of the
+ * child fields may be respectively "entries", "key", and "value", but this is
+ * not enforced.
+ *
+ * Map
+ * ```text
+ *   - child[0] entries: Struct
+ *     - child[0] key: K
+ *     - child[1] value: V
+ * ```
+ * Neither the "entries" field nor the "key" field may be nullable.
+ *
+ * The metadata is structured so that Arrow systems without special handling
+ * for Map can make Map an alias for List. The "layout" attribute for the Map
+ * field must have the same contents as a List.
+ */
+class Map {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsMap(bb, obj) {
+        return (obj || new Map()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsMap(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Map()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * Set to true if the keys within each value are sorted
+     */
+    keysSorted() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? !!this.bb.readInt8(this.bb_pos + offset) : false;
+    }
+    static startMap(builder) {
+        builder.startObject(1);
+    }
+    static addKeysSorted(builder, keysSorted) {
+        builder.addFieldInt8(0, +keysSorted, +false);
+    }
+    static endMap(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createMap(builder, keysSorted) {
+        Map.startMap(builder);
+        Map.addKeysSorted(builder, keysSorted);
+        return Map.endMap(builder);
+    }
+}
+exports.Map = Map;
+
+//# sourceMappingURL=map.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/map.js.map b/igv_component/node_modules/apache-arrow/fb/map.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..b2406238e564990355e5342df1e97f390b227964
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/map.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/map.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C;;;;;;;;;;;;;;;;;;;;;;;;;;GA0BG;AACH,MAAa,GAAG;IAAhB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA0Cb,CAAC;IAzCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,EAAyB,EAAE,GAAQ;QACrD,OAAO,CAAC,GAAG,IAAI,IAAI,GAAG,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACpF,CAAC;IAED,MAAM,CAAC,wBAAwB,CAAC,EAAyB,EAAE,GAAQ;QACjE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,GAAG,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACpF,CAAC;IAED;;OAEG;IACH,UAAU;QACR,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC;IACpE,CAAC;IAED,MAAM,CAAC,QAAQ,CAAC,OAA2B;QACzC,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B,EAAE,UAAkB;QAClE,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,CAAC,UAAU,EAAE,CAAC,KAAK,CAAC,CAAC;IAC/C,CAAC;IAED,MAAM,CAAC,MAAM,CAAC,OAA2B;QACvC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B,EAAE,UAAkB;QAC9D,GAAG,CAAC,QAAQ,CAAC,OAAO,CAAC,CAAC;QACtB,GAAG,CAAC,aAAa,CAAC,OAAO,EAAE,UAAU,CAAC,CAAC;QACvC,OAAO,GAAG,CAAC,MAAM,CAAC,OAAO,CAAC,CAAC;IAC7B,CAAC;CACA;AA5CD,kBA4CC","file":"map.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/map.mjs b/igv_component/node_modules/apache-arrow/fb/map.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..46b77b792e9b72d651754a15f086f7c23a7fdb5c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/map.mjs
@@ -0,0 +1,71 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+/**
+ * A Map is a logical nested type that is represented as
+ *
+ * List<entries: Struct<key: K, value: V>>
+ *
+ * In this layout, the keys and values are each respectively contiguous. We do
+ * not constrain the key and value types, so the application is responsible
+ * for ensuring that the keys are hashable and unique. Whether the keys are sorted
+ * may be set in the metadata for this field.
+ *
+ * In a field with Map type, the field has a child Struct field, which then
+ * has two children: key type and the second the value type. The names of the
+ * child fields may be respectively "entries", "key", and "value", but this is
+ * not enforced.
+ *
+ * Map
+ * ```text
+ *   - child[0] entries: Struct
+ *     - child[0] key: K
+ *     - child[1] value: V
+ * ```
+ * Neither the "entries" field nor the "key" field may be nullable.
+ *
+ * The metadata is structured so that Arrow systems without special handling
+ * for Map can make Map an alias for List. The "layout" attribute for the Map
+ * field must have the same contents as a List.
+ */
+export class Map {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsMap(bb, obj) {
+        return (obj || new Map()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsMap(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Map()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * Set to true if the keys within each value are sorted
+     */
+    keysSorted() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? !!this.bb.readInt8(this.bb_pos + offset) : false;
+    }
+    static startMap(builder) {
+        builder.startObject(1);
+    }
+    static addKeysSorted(builder, keysSorted) {
+        builder.addFieldInt8(0, +keysSorted, +false);
+    }
+    static endMap(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createMap(builder, keysSorted) {
+        Map.startMap(builder);
+        Map.addKeysSorted(builder, keysSorted);
+        return Map.endMap(builder);
+    }
+}
+
+//# sourceMappingURL=map.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/map.mjs.map b/igv_component/node_modules/apache-arrow/fb/map.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..0a67b12e297633d5045097dbab21cf0cf05c188e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/map.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/map.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;;;;;;;;;;;;;;;;;;;;;;;;GA0BG;AACH,MAAM,OAAO,GAAG;IAAhB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA0Cb,CAAC;IAzCD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,EAAyB,EAAE,GAAQ;QACrD,OAAO,CAAC,GAAG,IAAI,IAAI,GAAG,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACpF,CAAC;IAED,MAAM,CAAC,wBAAwB,CAAC,EAAyB,EAAE,GAAQ;QACjE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,GAAG,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACpF,CAAC;IAED;;OAEG;IACH,UAAU;QACR,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC;IACpE,CAAC;IAED,MAAM,CAAC,QAAQ,CAAC,OAA2B;QACzC,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B,EAAE,UAAkB;QAClE,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,CAAC,UAAU,EAAE,CAAC,KAAK,CAAC,CAAC;IAC/C,CAAC;IAED,MAAM,CAAC,MAAM,CAAC,OAA2B;QACvC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B,EAAE,UAAkB;QAC9D,GAAG,CAAC,QAAQ,CAAC,OAAO,CAAC,CAAC;QACtB,GAAG,CAAC,aAAa,CAAC,OAAO,EAAE,UAAU,CAAC,CAAC;QACvC,OAAO,GAAG,CAAC,MAAM,CAAC,OAAO,CAAC,CAAC;IAC7B,CAAC;CACA","file":"map.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/message-header.d.ts b/igv_component/node_modules/apache-arrow/fb/message-header.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d165069c1d0f6b813a6515b5e5db79141e265adf
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/message-header.d.ts
@@ -0,0 +1,25 @@
+import { DictionaryBatch } from './dictionary-batch.js';
+import { RecordBatch } from './record-batch.js';
+import { Schema } from './schema.js';
+import { SparseTensor } from './sparse-tensor.js';
+import { Tensor } from './tensor.js';
+/**
+ * ----------------------------------------------------------------------
+ * The root Message type
+ * This union enables us to easily send different message types without
+ * redundant storage, and in the future we can easily add new message types.
+ *
+ * Arrow implementations do not need to implement all of the message types,
+ * which may include experimental metadata types. For maximum compatibility,
+ * it is best to send data using RecordBatch
+ */
+export declare enum MessageHeader {
+    NONE = 0,
+    Schema = 1,
+    DictionaryBatch = 2,
+    RecordBatch = 3,
+    Tensor = 4,
+    SparseTensor = 5
+}
+export declare function unionToMessageHeader(type: MessageHeader, accessor: (obj: DictionaryBatch | RecordBatch | Schema | SparseTensor | Tensor) => DictionaryBatch | RecordBatch | Schema | SparseTensor | Tensor | null): DictionaryBatch | RecordBatch | Schema | SparseTensor | Tensor | null;
+export declare function unionListToMessageHeader(type: MessageHeader, accessor: (index: number, obj: DictionaryBatch | RecordBatch | Schema | SparseTensor | Tensor) => DictionaryBatch | RecordBatch | Schema | SparseTensor | Tensor | null, index: number): DictionaryBatch | RecordBatch | Schema | SparseTensor | Tensor | null;
diff --git a/igv_component/node_modules/apache-arrow/fb/message-header.d.ts.map b/igv_component/node_modules/apache-arrow/fb/message-header.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..ca2bee6d5e730a7bd34ae05df0b8ce3560007dc8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/message-header.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/message-header.ts"],"names":[],"mappings":"AAEA,OAAO,EAAE,eAAe,EAAE,MAAM,uBAAuB,CAAC;AACxD,OAAO,EAAE,WAAW,EAAE,MAAM,mBAAmB,CAAC;AAChD,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AACrC,OAAO,EAAE,YAAY,EAAE,MAAM,oBAAoB,CAAC;AAClD,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AAGrC;;;;;;;;;GASG;AACH,oBAAY,aAAa;IACvB,IAAI,IAAI;IACR,MAAM,IAAI;IACV,eAAe,IAAI;IACnB,WAAW,IAAI;IACf,MAAM,IAAI;IACV,YAAY,IAAI;CACjB;AAED,wBAAgB,oBAAoB,CAClC,IAAI,EAAE,aAAa,EACnB,QAAQ,EAAE,CAAC,GAAG,EAAC,eAAe,GAAC,WAAW,GAAC,MAAM,GAAC,YAAY,GAAC,MAAM,KAAK,eAAe,GAAC,WAAW,GAAC,MAAM,GAAC,YAAY,GAAC,MAAM,GAAC,IAAI,GACpI,eAAe,GAAC,WAAW,GAAC,MAAM,GAAC,YAAY,GAAC,MAAM,GAAC,IAAI,CAU7D;AAED,wBAAgB,wBAAwB,CACtC,IAAI,EAAE,aAAa,EACnB,QAAQ,EAAE,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,EAAC,eAAe,GAAC,WAAW,GAAC,MAAM,GAAC,YAAY,GAAC,MAAM,KAAK,eAAe,GAAC,WAAW,GAAC,MAAM,GAAC,YAAY,GAAC,MAAM,GAAC,IAAI,EACpJ,KAAK,EAAE,MAAM,GACZ,eAAe,GAAC,WAAW,GAAC,MAAM,GAAC,YAAY,GAAC,MAAM,GAAC,IAAI,CAU7D","file":"message-header.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/message-header.js b/igv_component/node_modules/apache-arrow/fb/message-header.js
new file mode 100644
index 0000000000000000000000000000000000000000..6d50da64cb9e652c9ae7ed34ada0d4ab1e1f8b08
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/message-header.js
@@ -0,0 +1,54 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.unionListToMessageHeader = exports.unionToMessageHeader = exports.MessageHeader = void 0;
+const dictionary_batch_js_1 = require("./dictionary-batch.js");
+const record_batch_js_1 = require("./record-batch.js");
+const schema_js_1 = require("./schema.js");
+const sparse_tensor_js_1 = require("./sparse-tensor.js");
+const tensor_js_1 = require("./tensor.js");
+/**
+ * ----------------------------------------------------------------------
+ * The root Message type
+ * This union enables us to easily send different message types without
+ * redundant storage, and in the future we can easily add new message types.
+ *
+ * Arrow implementations do not need to implement all of the message types,
+ * which may include experimental metadata types. For maximum compatibility,
+ * it is best to send data using RecordBatch
+ */
+var MessageHeader;
+(function (MessageHeader) {
+    MessageHeader[MessageHeader["NONE"] = 0] = "NONE";
+    MessageHeader[MessageHeader["Schema"] = 1] = "Schema";
+    MessageHeader[MessageHeader["DictionaryBatch"] = 2] = "DictionaryBatch";
+    MessageHeader[MessageHeader["RecordBatch"] = 3] = "RecordBatch";
+    MessageHeader[MessageHeader["Tensor"] = 4] = "Tensor";
+    MessageHeader[MessageHeader["SparseTensor"] = 5] = "SparseTensor";
+})(MessageHeader = exports.MessageHeader || (exports.MessageHeader = {}));
+function unionToMessageHeader(type, accessor) {
+    switch (MessageHeader[type]) {
+        case 'NONE': return null;
+        case 'Schema': return accessor(new schema_js_1.Schema());
+        case 'DictionaryBatch': return accessor(new dictionary_batch_js_1.DictionaryBatch());
+        case 'RecordBatch': return accessor(new record_batch_js_1.RecordBatch());
+        case 'Tensor': return accessor(new tensor_js_1.Tensor());
+        case 'SparseTensor': return accessor(new sparse_tensor_js_1.SparseTensor());
+        default: return null;
+    }
+}
+exports.unionToMessageHeader = unionToMessageHeader;
+function unionListToMessageHeader(type, accessor, index) {
+    switch (MessageHeader[type]) {
+        case 'NONE': return null;
+        case 'Schema': return accessor(index, new schema_js_1.Schema());
+        case 'DictionaryBatch': return accessor(index, new dictionary_batch_js_1.DictionaryBatch());
+        case 'RecordBatch': return accessor(index, new record_batch_js_1.RecordBatch());
+        case 'Tensor': return accessor(index, new tensor_js_1.Tensor());
+        case 'SparseTensor': return accessor(index, new sparse_tensor_js_1.SparseTensor());
+        default: return null;
+    }
+}
+exports.unionListToMessageHeader = unionListToMessageHeader;
+
+//# sourceMappingURL=message-header.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/message-header.js.map b/igv_component/node_modules/apache-arrow/fb/message-header.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..e3b93c3512b754460be02349cb28eb0eb6622d57
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/message-header.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/message-header.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAErE,+DAAwD;AACxD,uDAAgD;AAChD,2CAAqC;AACrC,yDAAkD;AAClD,2CAAqC;AAGrC;;;;;;;;;GASG;AACH,IAAY,aAOX;AAPD,WAAY,aAAa;IACvB,iDAAQ,CAAA;IACR,qDAAU,CAAA;IACV,uEAAmB,CAAA;IACnB,+DAAe,CAAA;IACf,qDAAU,CAAA;IACV,iEAAgB,CAAA;AAClB,CAAC,EAPW,aAAa,GAAb,qBAAa,KAAb,qBAAa,QAOxB;AAED,SAAgB,oBAAoB,CAClC,IAAmB,EACnB,QAAqI;IAErI,QAAO,aAAa,CAAC,IAAI,CAAC,EAAE;QAC1B,KAAK,MAAM,CAAC,CAAC,OAAO,IAAI,CAAC;QACzB,KAAK,QAAQ,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,kBAAM,EAAE,CAAY,CAAC;QACxD,KAAK,iBAAiB,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,qCAAe,EAAE,CAAqB,CAAC;QACnF,KAAK,aAAa,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,6BAAW,EAAE,CAAiB,CAAC;QACvE,KAAK,QAAQ,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,kBAAM,EAAE,CAAY,CAAC;QACxD,KAAK,cAAc,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,+BAAY,EAAE,CAAkB,CAAC;QAC1E,OAAO,CAAC,CAAC,OAAO,IAAI,CAAC;KACtB;AACH,CAAC;AAbD,oDAaC;AAED,SAAgB,wBAAwB,CACtC,IAAmB,EACnB,QAAoJ,EACpJ,KAAa;IAEb,QAAO,aAAa,CAAC,IAAI,CAAC,EAAE;QAC1B,KAAK,MAAM,CAAC,CAAC,OAAO,IAAI,CAAC;QACzB,KAAK,QAAQ,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,kBAAM,EAAE,CAAY,CAAC;QAC/D,KAAK,iBAAiB,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,qCAAe,EAAE,CAAqB,CAAC;QAC1F,KAAK,aAAa,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,6BAAW,EAAE,CAAiB,CAAC;QAC9E,KAAK,QAAQ,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,kBAAM,EAAE,CAAY,CAAC;QAC/D,KAAK,cAAc,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,+BAAY,EAAE,CAAkB,CAAC;QACjF,OAAO,CAAC,CAAC,OAAO,IAAI,CAAC;KACtB;AACH,CAAC;AAdD,4DAcC","file":"message-header.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/message-header.mjs b/igv_component/node_modules/apache-arrow/fb/message-header.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..861897b06a2cf5d3955787ebbaca862cdebfbb20
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/message-header.mjs
@@ -0,0 +1,49 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import { DictionaryBatch } from './dictionary-batch.mjs';
+import { RecordBatch } from './record-batch.mjs';
+import { Schema } from './schema.mjs';
+import { SparseTensor } from './sparse-tensor.mjs';
+import { Tensor } from './tensor.mjs';
+/**
+ * ----------------------------------------------------------------------
+ * The root Message type
+ * This union enables us to easily send different message types without
+ * redundant storage, and in the future we can easily add new message types.
+ *
+ * Arrow implementations do not need to implement all of the message types,
+ * which may include experimental metadata types. For maximum compatibility,
+ * it is best to send data using RecordBatch
+ */
+export var MessageHeader;
+(function (MessageHeader) {
+    MessageHeader[MessageHeader["NONE"] = 0] = "NONE";
+    MessageHeader[MessageHeader["Schema"] = 1] = "Schema";
+    MessageHeader[MessageHeader["DictionaryBatch"] = 2] = "DictionaryBatch";
+    MessageHeader[MessageHeader["RecordBatch"] = 3] = "RecordBatch";
+    MessageHeader[MessageHeader["Tensor"] = 4] = "Tensor";
+    MessageHeader[MessageHeader["SparseTensor"] = 5] = "SparseTensor";
+})(MessageHeader || (MessageHeader = {}));
+export function unionToMessageHeader(type, accessor) {
+    switch (MessageHeader[type]) {
+        case 'NONE': return null;
+        case 'Schema': return accessor(new Schema());
+        case 'DictionaryBatch': return accessor(new DictionaryBatch());
+        case 'RecordBatch': return accessor(new RecordBatch());
+        case 'Tensor': return accessor(new Tensor());
+        case 'SparseTensor': return accessor(new SparseTensor());
+        default: return null;
+    }
+}
+export function unionListToMessageHeader(type, accessor, index) {
+    switch (MessageHeader[type]) {
+        case 'NONE': return null;
+        case 'Schema': return accessor(index, new Schema());
+        case 'DictionaryBatch': return accessor(index, new DictionaryBatch());
+        case 'RecordBatch': return accessor(index, new RecordBatch());
+        case 'Tensor': return accessor(index, new Tensor());
+        case 'SparseTensor': return accessor(index, new SparseTensor());
+        default: return null;
+    }
+}
+
+//# sourceMappingURL=message-header.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/message-header.mjs.map b/igv_component/node_modules/apache-arrow/fb/message-header.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..c0b6244b25eeff5364a44849a0d96503b0b9541e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/message-header.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/message-header.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,EAAE,eAAe,EAAE,MAAM,uBAAuB,CAAC;AACxD,OAAO,EAAE,WAAW,EAAE,MAAM,mBAAmB,CAAC;AAChD,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AACrC,OAAO,EAAE,YAAY,EAAE,MAAM,oBAAoB,CAAC;AAClD,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AAGrC;;;;;;;;;GASG;AACH,MAAM,CAAN,IAAY,aAOX;AAPD,WAAY,aAAa;IACvB,iDAAQ,CAAA;IACR,qDAAU,CAAA;IACV,uEAAmB,CAAA;IACnB,+DAAe,CAAA;IACf,qDAAU,CAAA;IACV,iEAAgB,CAAA;AAClB,CAAC,EAPW,aAAa,KAAb,aAAa,QAOxB;AAED,MAAM,UAAU,oBAAoB,CAClC,IAAmB,EACnB,QAAqI;IAErI,QAAO,aAAa,CAAC,IAAI,CAAC,EAAE;QAC1B,KAAK,MAAM,CAAC,CAAC,OAAO,IAAI,CAAC;QACzB,KAAK,QAAQ,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,MAAM,EAAE,CAAY,CAAC;QACxD,KAAK,iBAAiB,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,eAAe,EAAE,CAAqB,CAAC;QACnF,KAAK,aAAa,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,WAAW,EAAE,CAAiB,CAAC;QACvE,KAAK,QAAQ,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,MAAM,EAAE,CAAY,CAAC;QACxD,KAAK,cAAc,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,YAAY,EAAE,CAAkB,CAAC;QAC1E,OAAO,CAAC,CAAC,OAAO,IAAI,CAAC;KACtB;AACH,CAAC;AAED,MAAM,UAAU,wBAAwB,CACtC,IAAmB,EACnB,QAAoJ,EACpJ,KAAa;IAEb,QAAO,aAAa,CAAC,IAAI,CAAC,EAAE;QAC1B,KAAK,MAAM,CAAC,CAAC,OAAO,IAAI,CAAC;QACzB,KAAK,QAAQ,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,MAAM,EAAE,CAAY,CAAC;QAC/D,KAAK,iBAAiB,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,eAAe,EAAE,CAAqB,CAAC;QAC1F,KAAK,aAAa,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,WAAW,EAAE,CAAiB,CAAC;QAC9E,KAAK,QAAQ,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,MAAM,EAAE,CAAY,CAAC;QAC/D,KAAK,cAAc,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,YAAY,EAAE,CAAkB,CAAC;QACjF,OAAO,CAAC,CAAC,OAAO,IAAI,CAAC;KACtB;AACH,CAAC","file":"message-header.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/message.d.ts b/igv_component/node_modules/apache-arrow/fb/message.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..4af7e5205b23735b13dbf94756d2fb6c14b64634
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/message.d.ts
@@ -0,0 +1,29 @@
+import * as flatbuffers from 'flatbuffers';
+import { KeyValue } from './key-value.js';
+import { MessageHeader } from './message-header.js';
+import { MetadataVersion } from './metadata-version.js';
+export declare class Message {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Message;
+    static getRootAsMessage(bb: flatbuffers.ByteBuffer, obj?: Message): Message;
+    static getSizePrefixedRootAsMessage(bb: flatbuffers.ByteBuffer, obj?: Message): Message;
+    version(): MetadataVersion;
+    headerType(): MessageHeader;
+    header<T extends flatbuffers.Table>(obj: any): any | null;
+    bodyLength(): flatbuffers.Long;
+    customMetadata(index: number, obj?: KeyValue): KeyValue | null;
+    customMetadataLength(): number;
+    static startMessage(builder: flatbuffers.Builder): void;
+    static addVersion(builder: flatbuffers.Builder, version: MetadataVersion): void;
+    static addHeaderType(builder: flatbuffers.Builder, headerType: MessageHeader): void;
+    static addHeader(builder: flatbuffers.Builder, headerOffset: flatbuffers.Offset): void;
+    static addBodyLength(builder: flatbuffers.Builder, bodyLength: flatbuffers.Long): void;
+    static addCustomMetadata(builder: flatbuffers.Builder, customMetadataOffset: flatbuffers.Offset): void;
+    static createCustomMetadataVector(builder: flatbuffers.Builder, data: flatbuffers.Offset[]): flatbuffers.Offset;
+    static startCustomMetadataVector(builder: flatbuffers.Builder, numElems: number): void;
+    static endMessage(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static finishMessageBuffer(builder: flatbuffers.Builder, offset: flatbuffers.Offset): void;
+    static finishSizePrefixedMessageBuffer(builder: flatbuffers.Builder, offset: flatbuffers.Offset): void;
+    static createMessage(builder: flatbuffers.Builder, version: MetadataVersion, headerType: MessageHeader, headerOffset: flatbuffers.Offset, bodyLength: flatbuffers.Long, customMetadataOffset: flatbuffers.Offset): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/message.d.ts.map b/igv_component/node_modules/apache-arrow/fb/message.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..2540abb37967bd9e0df762500bf2ef750f7bd9f7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/message.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/message.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,QAAQ,EAAE,MAAM,gBAAgB,CAAC;AAC1C,OAAO,EAAE,aAAa,EAAE,MAAM,qBAAqB,CAAC;AACpD,OAAO,EAAE,eAAe,EAAE,MAAM,uBAAuB,CAAC;AAGxD,qBAAa,OAAO;IAClB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,OAAO;IAMnD,MAAM,CAAC,gBAAgB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,OAAO,GAAE,OAAO;IAIxE,MAAM,CAAC,4BAA4B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,OAAO,GAAE,OAAO;IAKpF,OAAO,IAAG,eAAe;IAKzB,UAAU,IAAG,aAAa;IAM1B,MAAM,CAAC,CAAC,SAAS,WAAW,CAAC,KAAK,EAAE,GAAG,EAAC,GAAG,GAAE,GAAG,GAAC,IAAI;IAKrD,UAAU,IAAG,WAAW,CAAC,IAAI;IAK7B,cAAc,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,CAAC,EAAC,QAAQ,GAAE,QAAQ,GAAC,IAAI;IAK1D,oBAAoB,IAAG,MAAM;IAK7B,MAAM,CAAC,YAAY,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI/C,MAAM,CAAC,UAAU,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,OAAO,EAAC,eAAe;IAItE,MAAM,CAAC,aAAa,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,UAAU,EAAC,aAAa;IAI1E,MAAM,CAAC,SAAS,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,YAAY,EAAC,WAAW,CAAC,MAAM;IAI7E,MAAM,CAAC,aAAa,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,UAAU,EAAC,WAAW,CAAC,IAAI;IAI7E,MAAM,CAAC,iBAAiB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,oBAAoB,EAAC,WAAW,CAAC,MAAM;IAI7F,MAAM,CAAC,0BAA0B,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,WAAW,CAAC,MAAM,EAAE,GAAE,WAAW,CAAC,MAAM;IAQ5G,MAAM,CAAC,yBAAyB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAI7E,MAAM,CAAC,UAAU,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKjE,MAAM,CAAC,mBAAmB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,MAAM,EAAC,WAAW,CAAC,MAAM;IAIjF,MAAM,CAAC,+BAA+B,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,MAAM,EAAC,WAAW,CAAC,MAAM;IAI7F,MAAM,CAAC,aAAa,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,OAAO,EAAC,eAAe,EAAE,UAAU,EAAC,aAAa,EAAE,YAAY,EAAC,WAAW,CAAC,MAAM,EAAE,UAAU,EAAC,WAAW,CAAC,IAAI,EAAE,oBAAoB,EAAC,WAAW,CAAC,MAAM,GAAE,WAAW,CAAC,MAAM;CAS7N","file":"message.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/message.js b/igv_component/node_modules/apache-arrow/fb/message.js
new file mode 100644
index 0000000000000000000000000000000000000000..c360616d8682d30292d7392ea685a0a1099f00f5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/message.js
@@ -0,0 +1,102 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Message = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const key_value_js_1 = require("./key-value.js");
+const message_header_js_1 = require("./message-header.js");
+const metadata_version_js_1 = require("./metadata-version.js");
+class Message {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsMessage(bb, obj) {
+        return (obj || new Message()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsMessage(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Message()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    version() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : metadata_version_js_1.MetadataVersion.V1;
+    }
+    headerType() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.readUint8(this.bb_pos + offset) : message_header_js_1.MessageHeader.NONE;
+    }
+    // @ts-ignore
+    header(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? this.bb.__union(obj, this.bb_pos + offset) : null;
+    }
+    bodyLength() {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.readInt64(this.bb_pos + offset) : this.bb.createLong(0, 0);
+    }
+    customMetadata(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? (obj || new key_value_js_1.KeyValue()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
+    }
+    customMetadataLength() {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    static startMessage(builder) {
+        builder.startObject(5);
+    }
+    static addVersion(builder, version) {
+        builder.addFieldInt16(0, version, metadata_version_js_1.MetadataVersion.V1);
+    }
+    static addHeaderType(builder, headerType) {
+        builder.addFieldInt8(1, headerType, message_header_js_1.MessageHeader.NONE);
+    }
+    static addHeader(builder, headerOffset) {
+        builder.addFieldOffset(2, headerOffset, 0);
+    }
+    static addBodyLength(builder, bodyLength) {
+        builder.addFieldInt64(3, bodyLength, builder.createLong(0, 0));
+    }
+    static addCustomMetadata(builder, customMetadataOffset) {
+        builder.addFieldOffset(4, customMetadataOffset, 0);
+    }
+    static createCustomMetadataVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addOffset(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startCustomMetadataVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static endMessage(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static finishMessageBuffer(builder, offset) {
+        builder.finish(offset);
+    }
+    static finishSizePrefixedMessageBuffer(builder, offset) {
+        builder.finish(offset, undefined, true);
+    }
+    static createMessage(builder, version, headerType, headerOffset, bodyLength, customMetadataOffset) {
+        Message.startMessage(builder);
+        Message.addVersion(builder, version);
+        Message.addHeaderType(builder, headerType);
+        Message.addHeader(builder, headerOffset);
+        Message.addBodyLength(builder, bodyLength);
+        Message.addCustomMetadata(builder, customMetadataOffset);
+        return Message.endMessage(builder);
+    }
+}
+exports.Message = Message;
+
+//# sourceMappingURL=message.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/message.js.map b/igv_component/node_modules/apache-arrow/fb/message.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..daf00a08949343e183a2b37342c38b50f52ac017
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/message.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/message.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,iDAA0C;AAC1C,2DAAoD;AACpD,+DAAwD;AAGxD,MAAa,OAAO;IAApB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAyGb,CAAC;IAxGD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,EAAyB,EAAE,GAAY;QAC7D,OAAO,CAAC,GAAG,IAAI,IAAI,OAAO,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACxF,CAAC;IAED,MAAM,CAAC,4BAA4B,CAAC,EAAyB,EAAE,GAAY;QACzE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,OAAO,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACxF,CAAC;IAED,OAAO;QACL,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,qCAAe,CAAC,EAAE,CAAC;IAChF,CAAC;IAED,UAAU;QACR,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,iCAAa,CAAC,IAAI,CAAC;IAChF,CAAC;IAED,aAAa;IACb,MAAM,CAA8B,GAAO;QACzC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,OAAO,CAAC,GAAG,EAAE,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACrE,CAAC;IAED,UAAU;QACR,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;IACvF,CAAC;IAED,cAAc,CAAC,KAAa,EAAE,GAAa;QACzC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,uBAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,CAAC,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IAC5I,CAAC;IAED,oBAAoB;QAClB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B;QAC7C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B,EAAE,OAAuB;QACpE,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,OAAO,EAAE,qCAAe,CAAC,EAAE,CAAC,CAAC;IACxD,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B,EAAE,UAAwB;QACxE,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,UAAU,EAAE,iCAAa,CAAC,IAAI,CAAC,CAAC;IAC1D,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B,EAAE,YAA+B;QAC3E,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,YAAY,EAAE,CAAC,CAAC,CAAC;IAC7C,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B,EAAE,UAA2B;QAC3E,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,UAAU,EAAE,OAAO,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;IACjE,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,OAA2B,EAAE,oBAAuC;QAC3F,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,oBAAoB,EAAE,CAAC,CAAC,CAAC;IACrD,CAAC;IAED,MAAM,CAAC,0BAA0B,CAAC,OAA2B,EAAE,IAAyB;QACtF,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACvC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACzC,OAAO,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC,CAAE,CAAC,CAAC;SAC7B;QACD,OAAO,OAAO,CAAC,SAAS,EAAE,CAAC;IAC7B,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,OAA2B,EAAE,QAAe;QAC3E,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACtC,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B;QAC3C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,mBAAmB,CAAC,OAA2B,EAAE,MAAyB;QAC/E,OAAO,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,+BAA+B,CAAC,OAA2B,EAAE,MAAyB;QAC3F,OAAO,CAAC,MAAM,CAAC,MAAM,EAAE,SAAS,EAAE,IAAI,CAAC,CAAC;IAC1C,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B,EAAE,OAAuB,EAAE,UAAwB,EAAE,YAA+B,EAAE,UAA2B,EAAE,oBAAuC;QACxM,OAAO,CAAC,YAAY,CAAC,OAAO,CAAC,CAAC;QAC9B,OAAO,CAAC,UAAU,CAAC,OAAO,EAAE,OAAO,CAAC,CAAC;QACrC,OAAO,CAAC,aAAa,CAAC,OAAO,EAAE,UAAU,CAAC,CAAC;QAC3C,OAAO,CAAC,SAAS,CAAC,OAAO,EAAE,YAAY,CAAC,CAAC;QACzC,OAAO,CAAC,aAAa,CAAC,OAAO,EAAE,UAAU,CAAC,CAAC;QAC3C,OAAO,CAAC,iBAAiB,CAAC,OAAO,EAAE,oBAAoB,CAAC,CAAC;QACzD,OAAO,OAAO,CAAC,UAAU,CAAC,OAAO,CAAC,CAAC;IACrC,CAAC;CACA;AA3GD,0BA2GC","file":"message.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/message.mjs b/igv_component/node_modules/apache-arrow/fb/message.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..606a17b36c0726e0c76925f79eb3cd4578ce34ce
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/message.mjs
@@ -0,0 +1,97 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { KeyValue } from './key-value.mjs';
+import { MessageHeader } from './message-header.mjs';
+import { MetadataVersion } from './metadata-version.mjs';
+export class Message {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsMessage(bb, obj) {
+        return (obj || new Message()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsMessage(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Message()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    version() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : MetadataVersion.V1;
+    }
+    headerType() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.readUint8(this.bb_pos + offset) : MessageHeader.NONE;
+    }
+    // @ts-ignore
+    header(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? this.bb.__union(obj, this.bb_pos + offset) : null;
+    }
+    bodyLength() {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.readInt64(this.bb_pos + offset) : this.bb.createLong(0, 0);
+    }
+    customMetadata(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? (obj || new KeyValue()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
+    }
+    customMetadataLength() {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    static startMessage(builder) {
+        builder.startObject(5);
+    }
+    static addVersion(builder, version) {
+        builder.addFieldInt16(0, version, MetadataVersion.V1);
+    }
+    static addHeaderType(builder, headerType) {
+        builder.addFieldInt8(1, headerType, MessageHeader.NONE);
+    }
+    static addHeader(builder, headerOffset) {
+        builder.addFieldOffset(2, headerOffset, 0);
+    }
+    static addBodyLength(builder, bodyLength) {
+        builder.addFieldInt64(3, bodyLength, builder.createLong(0, 0));
+    }
+    static addCustomMetadata(builder, customMetadataOffset) {
+        builder.addFieldOffset(4, customMetadataOffset, 0);
+    }
+    static createCustomMetadataVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addOffset(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startCustomMetadataVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static endMessage(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static finishMessageBuffer(builder, offset) {
+        builder.finish(offset);
+    }
+    static finishSizePrefixedMessageBuffer(builder, offset) {
+        builder.finish(offset, undefined, true);
+    }
+    static createMessage(builder, version, headerType, headerOffset, bodyLength, customMetadataOffset) {
+        Message.startMessage(builder);
+        Message.addVersion(builder, version);
+        Message.addHeaderType(builder, headerType);
+        Message.addHeader(builder, headerOffset);
+        Message.addBodyLength(builder, bodyLength);
+        Message.addCustomMetadata(builder, customMetadataOffset);
+        return Message.endMessage(builder);
+    }
+}
+
+//# sourceMappingURL=message.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/message.mjs.map b/igv_component/node_modules/apache-arrow/fb/message.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..c7b1babd8ba4a9d46cbe08ff895bbb4a82cc49a4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/message.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/message.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,QAAQ,EAAE,MAAM,gBAAgB,CAAC;AAC1C,OAAO,EAAE,aAAa,EAAE,MAAM,qBAAqB,CAAC;AACpD,OAAO,EAAE,eAAe,EAAE,MAAM,uBAAuB,CAAC;AAGxD,MAAM,OAAO,OAAO;IAApB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAyGb,CAAC;IAxGD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,EAAyB,EAAE,GAAY;QAC7D,OAAO,CAAC,GAAG,IAAI,IAAI,OAAO,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACxF,CAAC;IAED,MAAM,CAAC,4BAA4B,CAAC,EAAyB,EAAE,GAAY;QACzE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,OAAO,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACxF,CAAC;IAED,OAAO;QACL,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,eAAe,CAAC,EAAE,CAAC;IAChF,CAAC;IAED,UAAU;QACR,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,aAAa,CAAC,IAAI,CAAC;IAChF,CAAC;IAED,aAAa;IACb,MAAM,CAA8B,GAAO;QACzC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,OAAO,CAAC,GAAG,EAAE,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACrE,CAAC;IAED,UAAU;QACR,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;IACvF,CAAC;IAED,cAAc,CAAC,KAAa,EAAE,GAAa;QACzC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,QAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,CAAC,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IAC5I,CAAC;IAED,oBAAoB;QAClB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B;QAC7C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B,EAAE,OAAuB;QACpE,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,OAAO,EAAE,eAAe,CAAC,EAAE,CAAC,CAAC;IACxD,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B,EAAE,UAAwB;QACxE,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,UAAU,EAAE,aAAa,CAAC,IAAI,CAAC,CAAC;IAC1D,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B,EAAE,YAA+B;QAC3E,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,YAAY,EAAE,CAAC,CAAC,CAAC;IAC7C,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B,EAAE,UAA2B;QAC3E,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,UAAU,EAAE,OAAO,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;IACjE,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,OAA2B,EAAE,oBAAuC;QAC3F,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,oBAAoB,EAAE,CAAC,CAAC,CAAC;IACrD,CAAC;IAED,MAAM,CAAC,0BAA0B,CAAC,OAA2B,EAAE,IAAyB;QACtF,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACvC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACzC,OAAO,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC,CAAE,CAAC,CAAC;SAC7B;QACD,OAAO,OAAO,CAAC,SAAS,EAAE,CAAC;IAC7B,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,OAA2B,EAAE,QAAe;QAC3E,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACtC,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B;QAC3C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,mBAAmB,CAAC,OAA2B,EAAE,MAAyB;QAC/E,OAAO,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,+BAA+B,CAAC,OAA2B,EAAE,MAAyB;QAC3F,OAAO,CAAC,MAAM,CAAC,MAAM,EAAE,SAAS,EAAE,IAAI,CAAC,CAAC;IAC1C,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B,EAAE,OAAuB,EAAE,UAAwB,EAAE,YAA+B,EAAE,UAA2B,EAAE,oBAAuC;QACxM,OAAO,CAAC,YAAY,CAAC,OAAO,CAAC,CAAC;QAC9B,OAAO,CAAC,UAAU,CAAC,OAAO,EAAE,OAAO,CAAC,CAAC;QACrC,OAAO,CAAC,aAAa,CAAC,OAAO,EAAE,UAAU,CAAC,CAAC;QAC3C,OAAO,CAAC,SAAS,CAAC,OAAO,EAAE,YAAY,CAAC,CAAC;QACzC,OAAO,CAAC,aAAa,CAAC,OAAO,EAAE,UAAU,CAAC,CAAC;QAC3C,OAAO,CAAC,iBAAiB,CAAC,OAAO,EAAE,oBAAoB,CAAC,CAAC;QACzD,OAAO,OAAO,CAAC,UAAU,CAAC,OAAO,CAAC,CAAC;IACrC,CAAC;CACA","file":"message.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/metadata-version.d.ts b/igv_component/node_modules/apache-arrow/fb/metadata-version.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..74d8702402234ad0c9e0e3851f9f641d0510ee7f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/metadata-version.d.ts
@@ -0,0 +1,35 @@
+/**
+ * Logical types, vector layouts, and schemas
+ * Format Version History.
+ * Version 1.0 - Forward and backwards compatibility guaranteed.
+ * Version 1.1 - Add Decimal256 (No format release).
+ * Version 1.2 (Pending)- Add Interval MONTH_DAY_NANO
+ */
+export declare enum MetadataVersion {
+    /**
+     * 0.1.0 (October 2016).
+     */
+    V1 = 0,
+    /**
+     * 0.2.0 (February 2017). Non-backwards compatible with V1.
+     */
+    V2 = 1,
+    /**
+     * 0.3.0 -> 0.7.1 (May - December 2017). Non-backwards compatible with V2.
+     */
+    V3 = 2,
+    /**
+     * >= 0.8.0 (December 2017). Non-backwards compatible with V3.
+     */
+    V4 = 3,
+    /**
+     * >= 1.0.0 (July 2020. Backwards compatible with V4 (V5 readers can read V4
+     * metadata and IPC messages). Implementations are recommended to provide a
+     * V4 compatibility mode with V5 format changes disabled.
+     *
+     * Incompatible changes between V4 and V5:
+     * - Union buffer layout has changed. In V5, Unions don't have a validity
+     *   bitmap buffer.
+     */
+    V5 = 4
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/metadata-version.d.ts.map b/igv_component/node_modules/apache-arrow/fb/metadata-version.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..7b360b7ff8ebbffbad23eb7bbadd076de1d97a87
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/metadata-version.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/metadata-version.ts"],"names":[],"mappings":"AAEA;;;;;;GAMG;AACH,oBAAY,eAAe;IACzB;;OAEG;IACH,EAAE,IAAI;IAEN;;OAEG;IACH,EAAE,IAAI;IAEN;;OAEG;IACH,EAAE,IAAI;IAEN;;OAEG;IACH,EAAE,IAAI;IAEN;;;;;;;;OAQG;IACH,EAAE,IAAI;CACP","file":"metadata-version.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/metadata-version.js b/igv_component/node_modules/apache-arrow/fb/metadata-version.js
new file mode 100644
index 0000000000000000000000000000000000000000..7883ed29f5a256d2edcc7283a249e5fd627003dc
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/metadata-version.js
@@ -0,0 +1,42 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.MetadataVersion = void 0;
+/**
+ * Logical types, vector layouts, and schemas
+ * Format Version History.
+ * Version 1.0 - Forward and backwards compatibility guaranteed.
+ * Version 1.1 - Add Decimal256 (No format release).
+ * Version 1.2 (Pending)- Add Interval MONTH_DAY_NANO
+ */
+var MetadataVersion;
+(function (MetadataVersion) {
+    /**
+     * 0.1.0 (October 2016).
+     */
+    MetadataVersion[MetadataVersion["V1"] = 0] = "V1";
+    /**
+     * 0.2.0 (February 2017). Non-backwards compatible with V1.
+     */
+    MetadataVersion[MetadataVersion["V2"] = 1] = "V2";
+    /**
+     * 0.3.0 -> 0.7.1 (May - December 2017). Non-backwards compatible with V2.
+     */
+    MetadataVersion[MetadataVersion["V3"] = 2] = "V3";
+    /**
+     * >= 0.8.0 (December 2017). Non-backwards compatible with V3.
+     */
+    MetadataVersion[MetadataVersion["V4"] = 3] = "V4";
+    /**
+     * >= 1.0.0 (July 2020. Backwards compatible with V4 (V5 readers can read V4
+     * metadata and IPC messages). Implementations are recommended to provide a
+     * V4 compatibility mode with V5 format changes disabled.
+     *
+     * Incompatible changes between V4 and V5:
+     * - Union buffer layout has changed. In V5, Unions don't have a validity
+     *   bitmap buffer.
+     */
+    MetadataVersion[MetadataVersion["V5"] = 4] = "V5";
+})(MetadataVersion = exports.MetadataVersion || (exports.MetadataVersion = {}));
+
+//# sourceMappingURL=metadata-version.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/metadata-version.js.map b/igv_component/node_modules/apache-arrow/fb/metadata-version.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..2466016a7611d98eb6f9cc65cf7d9cd00d649396
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/metadata-version.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/metadata-version.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAErE;;;;;;GAMG;AACH,IAAY,eA+BX;AA/BD,WAAY,eAAe;IACzB;;OAEG;IACH,iDAAM,CAAA;IAEN;;OAEG;IACH,iDAAM,CAAA;IAEN;;OAEG;IACH,iDAAM,CAAA;IAEN;;OAEG;IACH,iDAAM,CAAA;IAEN;;;;;;;;OAQG;IACH,iDAAM,CAAA;AACR,CAAC,EA/BW,eAAe,GAAf,uBAAe,KAAf,uBAAe,QA+B1B","file":"metadata-version.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/metadata-version.mjs b/igv_component/node_modules/apache-arrow/fb/metadata-version.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..8265745b62a83997d8cbee5a97938bb7afbde8e8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/metadata-version.mjs
@@ -0,0 +1,39 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+/**
+ * Logical types, vector layouts, and schemas
+ * Format Version History.
+ * Version 1.0 - Forward and backwards compatibility guaranteed.
+ * Version 1.1 - Add Decimal256 (No format release).
+ * Version 1.2 (Pending)- Add Interval MONTH_DAY_NANO
+ */
+export var MetadataVersion;
+(function (MetadataVersion) {
+    /**
+     * 0.1.0 (October 2016).
+     */
+    MetadataVersion[MetadataVersion["V1"] = 0] = "V1";
+    /**
+     * 0.2.0 (February 2017). Non-backwards compatible with V1.
+     */
+    MetadataVersion[MetadataVersion["V2"] = 1] = "V2";
+    /**
+     * 0.3.0 -> 0.7.1 (May - December 2017). Non-backwards compatible with V2.
+     */
+    MetadataVersion[MetadataVersion["V3"] = 2] = "V3";
+    /**
+     * >= 0.8.0 (December 2017). Non-backwards compatible with V3.
+     */
+    MetadataVersion[MetadataVersion["V4"] = 3] = "V4";
+    /**
+     * >= 1.0.0 (July 2020. Backwards compatible with V4 (V5 readers can read V4
+     * metadata and IPC messages). Implementations are recommended to provide a
+     * V4 compatibility mode with V5 format changes disabled.
+     *
+     * Incompatible changes between V4 and V5:
+     * - Union buffer layout has changed. In V5, Unions don't have a validity
+     *   bitmap buffer.
+     */
+    MetadataVersion[MetadataVersion["V5"] = 4] = "V5";
+})(MetadataVersion || (MetadataVersion = {}));
+
+//# sourceMappingURL=metadata-version.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/metadata-version.mjs.map b/igv_component/node_modules/apache-arrow/fb/metadata-version.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..c395a4d1b1de090fd4394d43f57398cdad95ccd8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/metadata-version.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/metadata-version.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE;;;;;;GAMG;AACH,MAAM,CAAN,IAAY,eA+BX;AA/BD,WAAY,eAAe;IACzB;;OAEG;IACH,iDAAM,CAAA;IAEN;;OAEG;IACH,iDAAM,CAAA;IAEN;;OAEG;IACH,iDAAM,CAAA;IAEN;;OAEG;IACH,iDAAM,CAAA;IAEN;;;;;;;;OAQG;IACH,iDAAM,CAAA;AACR,CAAC,EA/BW,eAAe,KAAf,eAAe,QA+B1B","file":"metadata-version.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/null.d.ts b/igv_component/node_modules/apache-arrow/fb/null.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..fb669b49b6557d2cabc883b2acdd0cf890097d07
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/null.d.ts
@@ -0,0 +1,14 @@
+import * as flatbuffers from 'flatbuffers';
+/**
+ * These are stored in the flatbuffer in the Type union below
+ */
+export declare class Null {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Null;
+    static getRootAsNull(bb: flatbuffers.ByteBuffer, obj?: Null): Null;
+    static getSizePrefixedRootAsNull(bb: flatbuffers.ByteBuffer, obj?: Null): Null;
+    static startNull(builder: flatbuffers.Builder): void;
+    static endNull(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createNull(builder: flatbuffers.Builder): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/null.d.ts.map b/igv_component/node_modules/apache-arrow/fb/null.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..ababa904a03886b475ab83d3ba96147e8d525190
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/null.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/null.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;GAEG;AACH,qBAAa,IAAI;IACf,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,IAAI;IAMhD,MAAM,CAAC,aAAa,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,IAAI,GAAE,IAAI;IAI/D,MAAM,CAAC,yBAAyB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,IAAI,GAAE,IAAI;IAK3E,MAAM,CAAC,SAAS,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI5C,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAK9D,MAAM,CAAC,UAAU,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;CAIhE","file":"null.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/null.js b/igv_component/node_modules/apache-arrow/fb/null.js
new file mode 100644
index 0000000000000000000000000000000000000000..d40055d57f30ab5f6b93646a7f5779fcc5480704
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/null.js
@@ -0,0 +1,41 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Null = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+/**
+ * These are stored in the flatbuffer in the Type union below
+ */
+class Null {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsNull(bb, obj) {
+        return (obj || new Null()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsNull(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Null()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startNull(builder) {
+        builder.startObject(0);
+    }
+    static endNull(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createNull(builder) {
+        Null.startNull(builder);
+        return Null.endNull(builder);
+    }
+}
+exports.Null = Null;
+
+//# sourceMappingURL=null.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/null.js.map b/igv_component/node_modules/apache-arrow/fb/null.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..024f85682ef41cab654d602d5e675f3a08bdcd1f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/null.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/null.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C;;GAEG;AACH,MAAa,IAAI;IAAjB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,EAAyB,EAAE,GAAS;QACvD,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,EAAyB,EAAE,GAAS;QACnE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B;QACxC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B;QAC3C,IAAI,CAAC,SAAS,CAAC,OAAO,CAAC,CAAC;QACxB,OAAO,IAAI,CAAC,OAAO,CAAC,OAAO,CAAC,CAAC;IAC/B,CAAC;CACA;AA/BD,oBA+BC","file":"null.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/null.mjs b/igv_component/node_modules/apache-arrow/fb/null.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..ec9380c86cbd1d1b8b6f6e57b37aa9a29a75bf02
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/null.mjs
@@ -0,0 +1,36 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+/**
+ * These are stored in the flatbuffer in the Type union below
+ */
+export class Null {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsNull(bb, obj) {
+        return (obj || new Null()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsNull(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Null()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startNull(builder) {
+        builder.startObject(0);
+    }
+    static endNull(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createNull(builder) {
+        Null.startNull(builder);
+        return Null.endNull(builder);
+    }
+}
+
+//# sourceMappingURL=null.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/null.mjs.map b/igv_component/node_modules/apache-arrow/fb/null.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..c67cfc58963567199a436c03912d2489fea1392e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/null.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/null.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;GAEG;AACH,MAAM,OAAO,IAAI;IAAjB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,EAAyB,EAAE,GAAS;QACvD,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,EAAyB,EAAE,GAAS;QACnE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B;QACxC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B;QAC3C,IAAI,CAAC,SAAS,CAAC,OAAO,CAAC,CAAC;QACxB,OAAO,IAAI,CAAC,OAAO,CAAC,OAAO,CAAC,CAAC;IAC/B,CAAC;CACA","file":"null.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/precision.d.ts b/igv_component/node_modules/apache-arrow/fb/precision.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..65fe74f00bfb5f8fe671b7f3fce415c596087931
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/precision.d.ts
@@ -0,0 +1,5 @@
+export declare enum Precision {
+    HALF = 0,
+    SINGLE = 1,
+    DOUBLE = 2
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/precision.d.ts.map b/igv_component/node_modules/apache-arrow/fb/precision.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..45a6fa79b114aae6509c2cc683dfe2d5df86ad57
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/precision.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/precision.ts"],"names":[],"mappings":"AAEA,oBAAY,SAAS;IACnB,IAAI,IAAI;IACR,MAAM,IAAI;IACV,MAAM,IAAI;CACX","file":"precision.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/precision.js b/igv_component/node_modules/apache-arrow/fb/precision.js
new file mode 100644
index 0000000000000000000000000000000000000000..05f9da64cc5e50f2ad9aef3684b29b703aa6bf8f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/precision.js
@@ -0,0 +1,12 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Precision = void 0;
+var Precision;
+(function (Precision) {
+    Precision[Precision["HALF"] = 0] = "HALF";
+    Precision[Precision["SINGLE"] = 1] = "SINGLE";
+    Precision[Precision["DOUBLE"] = 2] = "DOUBLE";
+})(Precision = exports.Precision || (exports.Precision = {}));
+
+//# sourceMappingURL=precision.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/precision.js.map b/igv_component/node_modules/apache-arrow/fb/precision.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..6e7a61c7462ee9618a6d366b29fdf95ef1b41b9e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/precision.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/precision.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAErE,IAAY,SAIX;AAJD,WAAY,SAAS;IACnB,yCAAQ,CAAA;IACR,6CAAU,CAAA;IACV,6CAAU,CAAA;AACZ,CAAC,EAJW,SAAS,GAAT,iBAAS,KAAT,iBAAS,QAIpB","file":"precision.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/precision.mjs b/igv_component/node_modules/apache-arrow/fb/precision.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..e399f980ecca08ba4ada7d8f7a7fb0de2e1e6d5d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/precision.mjs
@@ -0,0 +1,9 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+export var Precision;
+(function (Precision) {
+    Precision[Precision["HALF"] = 0] = "HALF";
+    Precision[Precision["SINGLE"] = 1] = "SINGLE";
+    Precision[Precision["DOUBLE"] = 2] = "DOUBLE";
+})(Precision || (Precision = {}));
+
+//# sourceMappingURL=precision.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/precision.mjs.map b/igv_component/node_modules/apache-arrow/fb/precision.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..01e77446f17edd4e7f17c7d2aeee3b1111a44139
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/precision.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/precision.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,MAAM,CAAN,IAAY,SAIX;AAJD,WAAY,SAAS;IACnB,yCAAQ,CAAA;IACR,6CAAU,CAAA;IACV,6CAAU,CAAA;AACZ,CAAC,EAJW,SAAS,KAAT,SAAS,QAIpB","file":"precision.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/record-batch.d.ts b/igv_component/node_modules/apache-arrow/fb/record-batch.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..de9baf9f0d0ed01f1b60a7317e30abdafdce2b0f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/record-batch.d.ts
@@ -0,0 +1,48 @@
+import * as flatbuffers from 'flatbuffers';
+import { BodyCompression } from './body-compression.js';
+import { Buffer } from './buffer.js';
+import { FieldNode } from './field-node.js';
+/**
+ * A data header describing the shared memory layout of a "record" or "row"
+ * batch. Some systems call this a "row batch" internally and others a "record
+ * batch".
+ */
+export declare class RecordBatch {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): RecordBatch;
+    static getRootAsRecordBatch(bb: flatbuffers.ByteBuffer, obj?: RecordBatch): RecordBatch;
+    static getSizePrefixedRootAsRecordBatch(bb: flatbuffers.ByteBuffer, obj?: RecordBatch): RecordBatch;
+    /**
+     * number of records / rows. The arrays in the batch should all have this
+     * length
+     */
+    length(): flatbuffers.Long;
+    /**
+     * Nodes correspond to the pre-ordered flattened logical schema
+     */
+    nodes(index: number, obj?: FieldNode): FieldNode | null;
+    nodesLength(): number;
+    /**
+     * Buffers correspond to the pre-ordered flattened buffer tree
+     *
+     * The number of buffers appended to this list depends on the schema. For
+     * example, most primitive arrays will have 2 buffers, 1 for the validity
+     * bitmap and 1 for the values. For struct arrays, there will only be a
+     * single buffer for the validity (nulls) bitmap
+     */
+    buffers(index: number, obj?: Buffer): Buffer | null;
+    buffersLength(): number;
+    /**
+     * Optional compression of the message body
+     */
+    compression(obj?: BodyCompression): BodyCompression | null;
+    static startRecordBatch(builder: flatbuffers.Builder): void;
+    static addLength(builder: flatbuffers.Builder, length: flatbuffers.Long): void;
+    static addNodes(builder: flatbuffers.Builder, nodesOffset: flatbuffers.Offset): void;
+    static startNodesVector(builder: flatbuffers.Builder, numElems: number): void;
+    static addBuffers(builder: flatbuffers.Builder, buffersOffset: flatbuffers.Offset): void;
+    static startBuffersVector(builder: flatbuffers.Builder, numElems: number): void;
+    static addCompression(builder: flatbuffers.Builder, compressionOffset: flatbuffers.Offset): void;
+    static endRecordBatch(builder: flatbuffers.Builder): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/record-batch.d.ts.map b/igv_component/node_modules/apache-arrow/fb/record-batch.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..17941a9ff954162957df1e0a996b80c6ae9b4d36
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/record-batch.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/record-batch.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,eAAe,EAAE,MAAM,uBAAuB,CAAC;AACxD,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AACrC,OAAO,EAAE,SAAS,EAAE,MAAM,iBAAiB,CAAC;AAG5C;;;;GAIG;AACH,qBAAa,WAAW;IACtB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,WAAW;IAMvD,MAAM,CAAC,oBAAoB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,WAAW,GAAE,WAAW;IAIpF,MAAM,CAAC,gCAAgC,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,WAAW,GAAE,WAAW;IAKhG;;;OAGG;IACH,MAAM,IAAG,WAAW,CAAC,IAAI;IAKzB;;OAEG;IACH,KAAK,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,CAAC,EAAC,SAAS,GAAE,SAAS,GAAC,IAAI;IAKnD,WAAW,IAAG,MAAM;IAKpB;;;;;;;OAOG;IACH,OAAO,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,CAAC,EAAC,MAAM,GAAE,MAAM,GAAC,IAAI;IAK/C,aAAa,IAAG,MAAM;IAKtB;;OAEG;IACH,WAAW,CAAC,GAAG,CAAC,EAAC,eAAe,GAAE,eAAe,GAAC,IAAI;IAKtD,MAAM,CAAC,gBAAgB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAInD,MAAM,CAAC,SAAS,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,MAAM,EAAC,WAAW,CAAC,IAAI;IAIrE,MAAM,CAAC,QAAQ,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,WAAW,EAAC,WAAW,CAAC,MAAM;IAI3E,MAAM,CAAC,gBAAgB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAIpE,MAAM,CAAC,UAAU,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,aAAa,EAAC,WAAW,CAAC,MAAM;IAI/E,MAAM,CAAC,kBAAkB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAItE,MAAM,CAAC,cAAc,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,iBAAiB,EAAC,WAAW,CAAC,MAAM;IAIvF,MAAM,CAAC,cAAc,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;CAKpE","file":"record-batch.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/record-batch.js b/igv_component/node_modules/apache-arrow/fb/record-batch.js
new file mode 100644
index 0000000000000000000000000000000000000000..2a6691da5a499414306155e8e6cd596a728a47c5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/record-batch.js
@@ -0,0 +1,102 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.RecordBatch = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const body_compression_js_1 = require("./body-compression.js");
+const buffer_js_1 = require("./buffer.js");
+const field_node_js_1 = require("./field-node.js");
+/**
+ * A data header describing the shared memory layout of a "record" or "row"
+ * batch. Some systems call this a "row batch" internally and others a "record
+ * batch".
+ */
+class RecordBatch {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsRecordBatch(bb, obj) {
+        return (obj || new RecordBatch()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsRecordBatch(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new RecordBatch()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * number of records / rows. The arrays in the batch should all have this
+     * length
+     */
+    length() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt64(this.bb_pos + offset) : this.bb.createLong(0, 0);
+    }
+    /**
+     * Nodes correspond to the pre-ordered flattened logical schema
+     */
+    nodes(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? (obj || new field_node_js_1.FieldNode()).__init(this.bb.__vector(this.bb_pos + offset) + index * 16, this.bb) : null;
+    }
+    nodesLength() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * Buffers correspond to the pre-ordered flattened buffer tree
+     *
+     * The number of buffers appended to this list depends on the schema. For
+     * example, most primitive arrays will have 2 buffers, 1 for the validity
+     * bitmap and 1 for the values. For struct arrays, there will only be a
+     * single buffer for the validity (nulls) bitmap
+     */
+    buffers(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? (obj || new buffer_js_1.Buffer()).__init(this.bb.__vector(this.bb_pos + offset) + index * 16, this.bb) : null;
+    }
+    buffersLength() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * Optional compression of the message body
+     */
+    compression(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? (obj || new body_compression_js_1.BodyCompression()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    static startRecordBatch(builder) {
+        builder.startObject(4);
+    }
+    static addLength(builder, length) {
+        builder.addFieldInt64(0, length, builder.createLong(0, 0));
+    }
+    static addNodes(builder, nodesOffset) {
+        builder.addFieldOffset(1, nodesOffset, 0);
+    }
+    static startNodesVector(builder, numElems) {
+        builder.startVector(16, numElems, 8);
+    }
+    static addBuffers(builder, buffersOffset) {
+        builder.addFieldOffset(2, buffersOffset, 0);
+    }
+    static startBuffersVector(builder, numElems) {
+        builder.startVector(16, numElems, 8);
+    }
+    static addCompression(builder, compressionOffset) {
+        builder.addFieldOffset(3, compressionOffset, 0);
+    }
+    static endRecordBatch(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+}
+exports.RecordBatch = RecordBatch;
+
+//# sourceMappingURL=record-batch.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/record-batch.js.map b/igv_component/node_modules/apache-arrow/fb/record-batch.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..9d3ca08a23dd606372cc81c6b9bc046c75723696
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/record-batch.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/record-batch.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,+DAAwD;AACxD,2CAAqC;AACrC,mDAA4C;AAG5C;;;;GAIG;AACH,MAAa,WAAW;IAAxB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAiGb,CAAC;IAhGD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,oBAAoB,CAAC,EAAyB,EAAE,GAAgB;QACrE,OAAO,CAAC,GAAG,IAAI,IAAI,WAAW,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC5F,CAAC;IAED,MAAM,CAAC,gCAAgC,CAAC,EAAyB,EAAE,GAAgB;QACjF,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,WAAW,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC5F,CAAC;IAED;;;OAGG;IACH,MAAM;QACJ,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;IACvF,CAAC;IAED;;OAEG;IACH,KAAK,CAAC,KAAa,EAAE,GAAc;QACjC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,yBAAS,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,EAAE,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACzH,CAAC;IAED,WAAW;QACT,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED;;;;;;;OAOG;IACH,OAAO,CAAC,KAAa,EAAE,GAAW;QAChC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,kBAAM,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,EAAE,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACtH,CAAC;IAED,aAAa;QACX,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED;;OAEG;IACH,WAAW,CAAC,GAAoB;QAC9B,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,qCAAe,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACpH,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,OAA2B;QACjD,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B,EAAE,MAAuB;QACnE,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,MAAM,EAAE,OAAO,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;IAC7D,CAAC;IAED,MAAM,CAAC,QAAQ,CAAC,OAA2B,EAAE,WAA8B;QACzE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,WAAW,EAAE,CAAC,CAAC,CAAC;IAC5C,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,OAA2B,EAAE,QAAe;QAClE,OAAO,CAAC,WAAW,CAAC,EAAE,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACvC,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B,EAAE,aAAgC;QAC7E,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,aAAa,EAAE,CAAC,CAAC,CAAC;IAC9C,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B,EAAE,QAAe;QACpE,OAAO,CAAC,WAAW,CAAC,EAAE,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACvC,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B,EAAE,iBAAoC;QACrF,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,iBAAiB,EAAE,CAAC,CAAC,CAAC;IAClD,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B;QAC/C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;CAEA;AAnGD,kCAmGC","file":"record-batch.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/record-batch.mjs b/igv_component/node_modules/apache-arrow/fb/record-batch.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..c522d96ae15a12e4dfa6b1130e266bbcd64e7602
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/record-batch.mjs
@@ -0,0 +1,97 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { BodyCompression } from './body-compression.mjs';
+import { Buffer } from './buffer.mjs';
+import { FieldNode } from './field-node.mjs';
+/**
+ * A data header describing the shared memory layout of a "record" or "row"
+ * batch. Some systems call this a "row batch" internally and others a "record
+ * batch".
+ */
+export class RecordBatch {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsRecordBatch(bb, obj) {
+        return (obj || new RecordBatch()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsRecordBatch(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new RecordBatch()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * number of records / rows. The arrays in the batch should all have this
+     * length
+     */
+    length() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt64(this.bb_pos + offset) : this.bb.createLong(0, 0);
+    }
+    /**
+     * Nodes correspond to the pre-ordered flattened logical schema
+     */
+    nodes(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? (obj || new FieldNode()).__init(this.bb.__vector(this.bb_pos + offset) + index * 16, this.bb) : null;
+    }
+    nodesLength() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * Buffers correspond to the pre-ordered flattened buffer tree
+     *
+     * The number of buffers appended to this list depends on the schema. For
+     * example, most primitive arrays will have 2 buffers, 1 for the validity
+     * bitmap and 1 for the values. For struct arrays, there will only be a
+     * single buffer for the validity (nulls) bitmap
+     */
+    buffers(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? (obj || new Buffer()).__init(this.bb.__vector(this.bb_pos + offset) + index * 16, this.bb) : null;
+    }
+    buffersLength() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * Optional compression of the message body
+     */
+    compression(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? (obj || new BodyCompression()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    static startRecordBatch(builder) {
+        builder.startObject(4);
+    }
+    static addLength(builder, length) {
+        builder.addFieldInt64(0, length, builder.createLong(0, 0));
+    }
+    static addNodes(builder, nodesOffset) {
+        builder.addFieldOffset(1, nodesOffset, 0);
+    }
+    static startNodesVector(builder, numElems) {
+        builder.startVector(16, numElems, 8);
+    }
+    static addBuffers(builder, buffersOffset) {
+        builder.addFieldOffset(2, buffersOffset, 0);
+    }
+    static startBuffersVector(builder, numElems) {
+        builder.startVector(16, numElems, 8);
+    }
+    static addCompression(builder, compressionOffset) {
+        builder.addFieldOffset(3, compressionOffset, 0);
+    }
+    static endRecordBatch(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+}
+
+//# sourceMappingURL=record-batch.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/record-batch.mjs.map b/igv_component/node_modules/apache-arrow/fb/record-batch.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..03721e055ccfa452d72f83f7d05ec59e20a69d16
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/record-batch.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/record-batch.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,eAAe,EAAE,MAAM,uBAAuB,CAAC;AACxD,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AACrC,OAAO,EAAE,SAAS,EAAE,MAAM,iBAAiB,CAAC;AAG5C;;;;GAIG;AACH,MAAM,OAAO,WAAW;IAAxB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAiGb,CAAC;IAhGD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,oBAAoB,CAAC,EAAyB,EAAE,GAAgB;QACrE,OAAO,CAAC,GAAG,IAAI,IAAI,WAAW,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC5F,CAAC;IAED,MAAM,CAAC,gCAAgC,CAAC,EAAyB,EAAE,GAAgB;QACjF,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,WAAW,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC5F,CAAC;IAED;;;OAGG;IACH,MAAM;QACJ,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;IACvF,CAAC;IAED;;OAEG;IACH,KAAK,CAAC,KAAa,EAAE,GAAc;QACjC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,EAAE,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACzH,CAAC;IAED,WAAW;QACT,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED;;;;;;;OAOG;IACH,OAAO,CAAC,KAAa,EAAE,GAAW;QAChC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,EAAE,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACtH,CAAC;IAED,aAAa;QACX,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED;;OAEG;IACH,WAAW,CAAC,GAAoB;QAC9B,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,eAAe,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACpH,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,OAA2B;QACjD,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B,EAAE,MAAuB;QACnE,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,MAAM,EAAE,OAAO,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;IAC7D,CAAC;IAED,MAAM,CAAC,QAAQ,CAAC,OAA2B,EAAE,WAA8B;QACzE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,WAAW,EAAE,CAAC,CAAC,CAAC;IAC5C,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,OAA2B,EAAE,QAAe;QAClE,OAAO,CAAC,WAAW,CAAC,EAAE,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACvC,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B,EAAE,aAAgC;QAC7E,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,aAAa,EAAE,CAAC,CAAC,CAAC;IAC9C,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B,EAAE,QAAe;QACpE,OAAO,CAAC,WAAW,CAAC,EAAE,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACvC,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B,EAAE,iBAAoC;QACrF,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,iBAAiB,EAAE,CAAC,CAAC,CAAC;IAClD,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B;QAC/C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;CAEA","file":"record-batch.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/schema.d.ts b/igv_component/node_modules/apache-arrow/fb/schema.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a82610a5d6128d60adc7a77387af8445a814ad24
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/schema.d.ts
@@ -0,0 +1,45 @@
+import * as flatbuffers from 'flatbuffers';
+import { Endianness } from './endianness.js';
+import { Field } from './field.js';
+import { KeyValue } from './key-value.js';
+/**
+ * ----------------------------------------------------------------------
+ * A Schema describes the columns in a row batch
+ */
+export declare class Schema {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Schema;
+    static getRootAsSchema(bb: flatbuffers.ByteBuffer, obj?: Schema): Schema;
+    static getSizePrefixedRootAsSchema(bb: flatbuffers.ByteBuffer, obj?: Schema): Schema;
+    /**
+     * endianness of the buffer
+     * it is Little Endian by default
+     * if endianness doesn't match the underlying system then the vectors need to be converted
+     */
+    endianness(): Endianness;
+    fields(index: number, obj?: Field): Field | null;
+    fieldsLength(): number;
+    customMetadata(index: number, obj?: KeyValue): KeyValue | null;
+    customMetadataLength(): number;
+    /**
+     * Features used in the stream/file.
+     */
+    features(index: number): flatbuffers.Long | null;
+    featuresLength(): number;
+    static startSchema(builder: flatbuffers.Builder): void;
+    static addEndianness(builder: flatbuffers.Builder, endianness: Endianness): void;
+    static addFields(builder: flatbuffers.Builder, fieldsOffset: flatbuffers.Offset): void;
+    static createFieldsVector(builder: flatbuffers.Builder, data: flatbuffers.Offset[]): flatbuffers.Offset;
+    static startFieldsVector(builder: flatbuffers.Builder, numElems: number): void;
+    static addCustomMetadata(builder: flatbuffers.Builder, customMetadataOffset: flatbuffers.Offset): void;
+    static createCustomMetadataVector(builder: flatbuffers.Builder, data: flatbuffers.Offset[]): flatbuffers.Offset;
+    static startCustomMetadataVector(builder: flatbuffers.Builder, numElems: number): void;
+    static addFeatures(builder: flatbuffers.Builder, featuresOffset: flatbuffers.Offset): void;
+    static createFeaturesVector(builder: flatbuffers.Builder, data: flatbuffers.Long[]): flatbuffers.Offset;
+    static startFeaturesVector(builder: flatbuffers.Builder, numElems: number): void;
+    static endSchema(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static finishSchemaBuffer(builder: flatbuffers.Builder, offset: flatbuffers.Offset): void;
+    static finishSizePrefixedSchemaBuffer(builder: flatbuffers.Builder, offset: flatbuffers.Offset): void;
+    static createSchema(builder: flatbuffers.Builder, endianness: Endianness, fieldsOffset: flatbuffers.Offset, customMetadataOffset: flatbuffers.Offset, featuresOffset: flatbuffers.Offset): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/schema.d.ts.map b/igv_component/node_modules/apache-arrow/fb/schema.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..c06d1072bbdcb011d951b875d11294e95e59c0ee
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/schema.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/schema.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,UAAU,EAAE,MAAM,iBAAiB,CAAC;AAC7C,OAAO,EAAE,KAAK,EAAE,MAAM,YAAY,CAAC;AACnC,OAAO,EAAE,QAAQ,EAAE,MAAM,gBAAgB,CAAC;AAG1C;;;GAGG;AACH,qBAAa,MAAM;IACjB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,MAAM;IAMlD,MAAM,CAAC,eAAe,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,MAAM,GAAE,MAAM;IAIrE,MAAM,CAAC,2BAA2B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,MAAM,GAAE,MAAM;IAKjF;;;;OAIG;IACH,UAAU,IAAG,UAAU;IAKvB,MAAM,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,CAAC,EAAC,KAAK,GAAE,KAAK,GAAC,IAAI;IAK5C,YAAY,IAAG,MAAM;IAKrB,cAAc,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,CAAC,EAAC,QAAQ,GAAE,QAAQ,GAAC,IAAI;IAK1D,oBAAoB,IAAG,MAAM;IAK7B;;OAEG;IACH,QAAQ,CAAC,KAAK,EAAE,MAAM,GAAE,WAAW,CAAC,IAAI,GAAC,IAAI;IAK7C,cAAc,IAAG,MAAM;IAKvB,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI9C,MAAM,CAAC,aAAa,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,UAAU,EAAC,UAAU;IAIvE,MAAM,CAAC,SAAS,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,YAAY,EAAC,WAAW,CAAC,MAAM;IAI7E,MAAM,CAAC,kBAAkB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,WAAW,CAAC,MAAM,EAAE,GAAE,WAAW,CAAC,MAAM;IAQpG,MAAM,CAAC,iBAAiB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAIrE,MAAM,CAAC,iBAAiB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,oBAAoB,EAAC,WAAW,CAAC,MAAM;IAI7F,MAAM,CAAC,0BAA0B,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,WAAW,CAAC,MAAM,EAAE,GAAE,WAAW,CAAC,MAAM;IAQ5G,MAAM,CAAC,yBAAyB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAI7E,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,cAAc,EAAC,WAAW,CAAC,MAAM;IAIjF,MAAM,CAAC,oBAAoB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,WAAW,CAAC,IAAI,EAAE,GAAE,WAAW,CAAC,MAAM;IAQpG,MAAM,CAAC,mBAAmB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAIvE,MAAM,CAAC,SAAS,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKhE,MAAM,CAAC,kBAAkB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,MAAM,EAAC,WAAW,CAAC,MAAM;IAIhF,MAAM,CAAC,8BAA8B,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,MAAM,EAAC,WAAW,CAAC,MAAM;IAI5F,MAAM,CAAC,YAAY,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,UAAU,EAAC,UAAU,EAAE,YAAY,EAAC,WAAW,CAAC,MAAM,EAAE,oBAAoB,EAAC,WAAW,CAAC,MAAM,EAAE,cAAc,EAAC,WAAW,CAAC,MAAM,GAAE,WAAW,CAAC,MAAM;CAQtM","file":"schema.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/schema.js b/igv_component/node_modules/apache-arrow/fb/schema.js
new file mode 100644
index 0000000000000000000000000000000000000000..7ecc75e09ebdc0a61942cc08dc2e254a27fb248b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/schema.js
@@ -0,0 +1,133 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Schema = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const endianness_js_1 = require("./endianness.js");
+const field_js_1 = require("./field.js");
+const key_value_js_1 = require("./key-value.js");
+/**
+ * ----------------------------------------------------------------------
+ * A Schema describes the columns in a row batch
+ */
+class Schema {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsSchema(bb, obj) {
+        return (obj || new Schema()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsSchema(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Schema()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * endianness of the buffer
+     * it is Little Endian by default
+     * if endianness doesn't match the underlying system then the vectors need to be converted
+     */
+    endianness() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : endianness_js_1.Endianness.Little;
+    }
+    fields(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? (obj || new field_js_1.Field()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
+    }
+    fieldsLength() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    customMetadata(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? (obj || new key_value_js_1.KeyValue()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
+    }
+    customMetadataLength() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * Features used in the stream/file.
+     */
+    features(index) {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.readInt64(this.bb.__vector(this.bb_pos + offset) + index * 8) : this.bb.createLong(0, 0);
+    }
+    featuresLength() {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    static startSchema(builder) {
+        builder.startObject(4);
+    }
+    static addEndianness(builder, endianness) {
+        builder.addFieldInt16(0, endianness, endianness_js_1.Endianness.Little);
+    }
+    static addFields(builder, fieldsOffset) {
+        builder.addFieldOffset(1, fieldsOffset, 0);
+    }
+    static createFieldsVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addOffset(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startFieldsVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static addCustomMetadata(builder, customMetadataOffset) {
+        builder.addFieldOffset(2, customMetadataOffset, 0);
+    }
+    static createCustomMetadataVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addOffset(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startCustomMetadataVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static addFeatures(builder, featuresOffset) {
+        builder.addFieldOffset(3, featuresOffset, 0);
+    }
+    static createFeaturesVector(builder, data) {
+        builder.startVector(8, data.length, 8);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addInt64(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startFeaturesVector(builder, numElems) {
+        builder.startVector(8, numElems, 8);
+    }
+    static endSchema(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static finishSchemaBuffer(builder, offset) {
+        builder.finish(offset);
+    }
+    static finishSizePrefixedSchemaBuffer(builder, offset) {
+        builder.finish(offset, undefined, true);
+    }
+    static createSchema(builder, endianness, fieldsOffset, customMetadataOffset, featuresOffset) {
+        Schema.startSchema(builder);
+        Schema.addEndianness(builder, endianness);
+        Schema.addFields(builder, fieldsOffset);
+        Schema.addCustomMetadata(builder, customMetadataOffset);
+        Schema.addFeatures(builder, featuresOffset);
+        return Schema.endSchema(builder);
+    }
+}
+exports.Schema = Schema;
+
+//# sourceMappingURL=schema.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/schema.js.map b/igv_component/node_modules/apache-arrow/fb/schema.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..64cbbc4c4c9ce545384d7a28b1b590b2210c054e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/schema.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/schema.mjs b/igv_component/node_modules/apache-arrow/fb/schema.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..7fef6110795d58bdc8d12ec16ca0e26900ee5a37
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/schema.mjs
@@ -0,0 +1,128 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { Endianness } from './endianness.mjs';
+import { Field } from './field.mjs';
+import { KeyValue } from './key-value.mjs';
+/**
+ * ----------------------------------------------------------------------
+ * A Schema describes the columns in a row batch
+ */
+export class Schema {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsSchema(bb, obj) {
+        return (obj || new Schema()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsSchema(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Schema()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * endianness of the buffer
+     * it is Little Endian by default
+     * if endianness doesn't match the underlying system then the vectors need to be converted
+     */
+    endianness() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : Endianness.Little;
+    }
+    fields(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? (obj || new Field()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
+    }
+    fieldsLength() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    customMetadata(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? (obj || new KeyValue()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
+    }
+    customMetadataLength() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * Features used in the stream/file.
+     */
+    features(index) {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.readInt64(this.bb.__vector(this.bb_pos + offset) + index * 8) : this.bb.createLong(0, 0);
+    }
+    featuresLength() {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    static startSchema(builder) {
+        builder.startObject(4);
+    }
+    static addEndianness(builder, endianness) {
+        builder.addFieldInt16(0, endianness, Endianness.Little);
+    }
+    static addFields(builder, fieldsOffset) {
+        builder.addFieldOffset(1, fieldsOffset, 0);
+    }
+    static createFieldsVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addOffset(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startFieldsVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static addCustomMetadata(builder, customMetadataOffset) {
+        builder.addFieldOffset(2, customMetadataOffset, 0);
+    }
+    static createCustomMetadataVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addOffset(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startCustomMetadataVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static addFeatures(builder, featuresOffset) {
+        builder.addFieldOffset(3, featuresOffset, 0);
+    }
+    static createFeaturesVector(builder, data) {
+        builder.startVector(8, data.length, 8);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addInt64(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startFeaturesVector(builder, numElems) {
+        builder.startVector(8, numElems, 8);
+    }
+    static endSchema(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static finishSchemaBuffer(builder, offset) {
+        builder.finish(offset);
+    }
+    static finishSizePrefixedSchemaBuffer(builder, offset) {
+        builder.finish(offset, undefined, true);
+    }
+    static createSchema(builder, endianness, fieldsOffset, customMetadataOffset, featuresOffset) {
+        Schema.startSchema(builder);
+        Schema.addEndianness(builder, endianness);
+        Schema.addFields(builder, fieldsOffset);
+        Schema.addCustomMetadata(builder, customMetadataOffset);
+        Schema.addFeatures(builder, featuresOffset);
+        return Schema.endSchema(builder);
+    }
+}
+
+//# sourceMappingURL=schema.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/schema.mjs.map b/igv_component/node_modules/apache-arrow/fb/schema.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..211c2a2b9e1a7dc86e1f61882979298f11cd0170
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/schema.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/schema.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,UAAU,EAAE,MAAM,iBAAiB,CAAC;AAC7C,OAAO,EAAE,KAAK,EAAE,MAAM,YAAY,CAAC;AACnC,OAAO,EAAE,QAAQ,EAAE,MAAM,gBAAgB,CAAC;AAG1C;;;GAGG;AACH,MAAM,OAAO,MAAM;IAAnB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAwIb,CAAC;IAvID,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,EAAyB,EAAE,GAAW;QAC3D,OAAO,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACvF,CAAC;IAED,MAAM,CAAC,2BAA2B,CAAC,EAAyB,EAAE,GAAW;QACvE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACvF,CAAC;IAED;;;;OAIG;IACH,UAAU;QACR,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,UAAU,CAAC,MAAM,CAAC;IAC/E,CAAC;IAED,MAAM,CAAC,KAAa,EAAE,GAAU;QAC9B,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,KAAK,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,CAAC,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACzI,CAAC;IAED,YAAY;QACV,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED,cAAc,CAAC,KAAa,EAAE,GAAa;QACzC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,QAAQ,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,CAAC,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IAC5I,CAAC;IAED,oBAAoB;QAClB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED;;OAEG;IACH,QAAQ,CAAC,KAAa;QACpB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;IACtH,CAAC;IAED,cAAc;QACZ,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B;QAC5C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B,EAAE,UAAqB;QACrE,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,UAAU,EAAE,UAAU,CAAC,MAAM,CAAC,CAAC;IAC1D,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B,EAAE,YAA+B;QAC3E,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,YAAY,EAAE,CAAC,CAAC,CAAC;IAC7C,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B,EAAE,IAAyB;QAC9E,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACvC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACzC,OAAO,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC,CAAE,CAAC,CAAC;SAC7B;QACD,OAAO,OAAO,CAAC,SAAS,EAAE,CAAC;IAC7B,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,OAA2B,EAAE,QAAe;QACnE,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACtC,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,OAA2B,EAAE,oBAAuC;QAC3F,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,oBAAoB,EAAE,CAAC,CAAC,CAAC;IACrD,CAAC;IAED,MAAM,CAAC,0BAA0B,CAAC,OAA2B,EAAE,IAAyB;QACtF,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACvC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACzC,OAAO,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC,CAAE,CAAC,CAAC;SAC7B;QACD,OAAO,OAAO,CAAC,SAAS,EAAE,CAAC;IAC7B,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,OAA2B,EAAE,QAAe;QAC3E,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACtC,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,cAAiC;QAC/E,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,cAAc,EAAE,CAAC,CAAC,CAAC;IAC/C,CAAC;IAED,MAAM,CAAC,oBAAoB,CAAC,OAA2B,EAAE,IAAuB;QAC9E,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACvC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACzC,OAAO,CAAC,QAAQ,CAAC,IAAI,CAAC,CAAC,CAAE,CAAC,CAAC;SAC5B;QACD,OAAO,OAAO,CAAC,SAAS,EAAE,CAAC;IAC7B,CAAC;IAED,MAAM,CAAC,mBAAmB,CAAC,OAA2B,EAAE,QAAe;QACrE,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACtC,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B,EAAE,MAAyB;QAC9E,OAAO,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC;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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.d.ts b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..fd0d97e210bda526257dc3b7669e5e9767c3682d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.d.ts
@@ -0,0 +1,4 @@
+export declare enum SparseMatrixCompressedAxis {
+    Row = 0,
+    Column = 1
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.d.ts.map b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..ab5ecd18365c9414a5a79225f97d3364ad388bd6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/sparse-matrix-compressed-axis.ts"],"names":[],"mappings":"AAEA,oBAAY,0BAA0B;IACpC,GAAG,IAAI;IACP,MAAM,IAAI;CACX","file":"sparse-matrix-compressed-axis.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.js b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.js
new file mode 100644
index 0000000000000000000000000000000000000000..187ab93aafcdb4be8aacf8ba98eac330335c0de8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.js
@@ -0,0 +1,11 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.SparseMatrixCompressedAxis = void 0;
+var SparseMatrixCompressedAxis;
+(function (SparseMatrixCompressedAxis) {
+    SparseMatrixCompressedAxis[SparseMatrixCompressedAxis["Row"] = 0] = "Row";
+    SparseMatrixCompressedAxis[SparseMatrixCompressedAxis["Column"] = 1] = "Column";
+})(SparseMatrixCompressedAxis = exports.SparseMatrixCompressedAxis || (exports.SparseMatrixCompressedAxis = {}));
+
+//# sourceMappingURL=sparse-matrix-compressed-axis.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.js.map b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..f08f589568c9ae759e0eaf83bfea4b68bb06b769
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/sparse-matrix-compressed-axis.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAErE,IAAY,0BAGX;AAHD,WAAY,0BAA0B;IACpC,yEAAO,CAAA;IACP,+EAAU,CAAA;AACZ,CAAC,EAHW,0BAA0B,GAA1B,kCAA0B,KAA1B,kCAA0B,QAGrC","file":"sparse-matrix-compressed-axis.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.mjs b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..d25bbc84b7bc4be8147fe1e568071c86bd897fd6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.mjs
@@ -0,0 +1,8 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+export var SparseMatrixCompressedAxis;
+(function (SparseMatrixCompressedAxis) {
+    SparseMatrixCompressedAxis[SparseMatrixCompressedAxis["Row"] = 0] = "Row";
+    SparseMatrixCompressedAxis[SparseMatrixCompressedAxis["Column"] = 1] = "Column";
+})(SparseMatrixCompressedAxis || (SparseMatrixCompressedAxis = {}));
+
+//# sourceMappingURL=sparse-matrix-compressed-axis.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.mjs.map b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..55eb6196d351748fca90dd29567298ad6c085f5f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-compressed-axis.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/sparse-matrix-compressed-axis.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,MAAM,CAAN,IAAY,0BAGX;AAHD,WAAY,0BAA0B;IACpC,yEAAO,CAAA;IACP,+EAAU,CAAA;AACZ,CAAC,EAHW,0BAA0B,KAA1B,0BAA0B,QAGrC","file":"sparse-matrix-compressed-axis.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.d.ts b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..54b804022500615ad0b152bc8ccb6a1f77c21ab8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.d.ts
@@ -0,0 +1,71 @@
+import * as flatbuffers from 'flatbuffers';
+import { Buffer } from './buffer.js';
+import { Int } from './int.js';
+import { SparseMatrixCompressedAxis } from './sparse-matrix-compressed-axis.js';
+/**
+ * Compressed Sparse format, that is matrix-specific.
+ */
+export declare class SparseMatrixIndexCSX {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): SparseMatrixIndexCSX;
+    static getRootAsSparseMatrixIndexCSX(bb: flatbuffers.ByteBuffer, obj?: SparseMatrixIndexCSX): SparseMatrixIndexCSX;
+    static getSizePrefixedRootAsSparseMatrixIndexCSX(bb: flatbuffers.ByteBuffer, obj?: SparseMatrixIndexCSX): SparseMatrixIndexCSX;
+    /**
+     * Which axis, row or column, is compressed
+     */
+    compressedAxis(): SparseMatrixCompressedAxis;
+    /**
+     * The type of values in indptrBuffer
+     */
+    indptrType(obj?: Int): Int | null;
+    /**
+     * indptrBuffer stores the location and size of indptr array that
+     * represents the range of the rows.
+     * The i-th row spans from `indptr[i]` to `indptr[i+1]` in the data.
+     * The length of this array is 1 + (the number of rows), and the type
+     * of index value is long.
+     *
+     * For example, let X be the following 6x4 matrix:
+     * ```text
+     *   X := [[0, 1, 2, 0],
+     *         [0, 0, 3, 0],
+     *         [0, 4, 0, 5],
+     *         [0, 0, 0, 0],
+     *         [6, 0, 7, 8],
+     *         [0, 9, 0, 0]].
+     * ```
+     * The array of non-zero values in X is:
+     * ```text
+     *   values(X) = [1, 2, 3, 4, 5, 6, 7, 8, 9].
+     * ```
+     * And the indptr of X is:
+     * ```text
+     *   indptr(X) = [0, 2, 3, 5, 5, 8, 10].
+     * ```
+     */
+    indptrBuffer(obj?: Buffer): Buffer | null;
+    /**
+     * The type of values in indicesBuffer
+     */
+    indicesType(obj?: Int): Int | null;
+    /**
+     * indicesBuffer stores the location and size of the array that
+     * contains the column indices of the corresponding non-zero values.
+     * The type of index value is long.
+     *
+     * For example, the indices of the above X is:
+     * ```text
+     *   indices(X) = [1, 2, 2, 1, 3, 0, 2, 3, 1].
+     * ```
+     * Note that the indices are sorted in lexicographical order for each row.
+     */
+    indicesBuffer(obj?: Buffer): Buffer | null;
+    static startSparseMatrixIndexCSX(builder: flatbuffers.Builder): void;
+    static addCompressedAxis(builder: flatbuffers.Builder, compressedAxis: SparseMatrixCompressedAxis): void;
+    static addIndptrType(builder: flatbuffers.Builder, indptrTypeOffset: flatbuffers.Offset): void;
+    static addIndptrBuffer(builder: flatbuffers.Builder, indptrBufferOffset: flatbuffers.Offset): void;
+    static addIndicesType(builder: flatbuffers.Builder, indicesTypeOffset: flatbuffers.Offset): void;
+    static addIndicesBuffer(builder: flatbuffers.Builder, indicesBufferOffset: flatbuffers.Offset): void;
+    static endSparseMatrixIndexCSX(builder: flatbuffers.Builder): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.d.ts.map b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..000d9c99431f860343489b39feb23cfc7d86efc4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/sparse-matrix-index-c-s-x.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AACrC,OAAO,EAAE,GAAG,EAAE,MAAM,UAAU,CAAC;AAC/B,OAAO,EAAE,0BAA0B,EAAE,MAAM,oCAAoC,CAAC;AAGhF;;GAEG;AACH,qBAAa,oBAAoB;IAC/B,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,oBAAoB;IAMhE,MAAM,CAAC,6BAA6B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,oBAAoB,GAAE,oBAAoB;IAI/G,MAAM,CAAC,yCAAyC,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,oBAAoB,GAAE,oBAAoB;IAK3H;;OAEG;IACH,cAAc,IAAG,0BAA0B;IAK3C;;OAEG;IACH,UAAU,CAAC,GAAG,CAAC,EAAC,GAAG,GAAE,GAAG,GAAC,IAAI;IAK7B;;;;;;;;;;;;;;;;;;;;;;;;OAwBG;IACH,YAAY,CAAC,GAAG,CAAC,EAAC,MAAM,GAAE,MAAM,GAAC,IAAI;IAKrC;;OAEG;IACH,WAAW,CAAC,GAAG,CAAC,EAAC,GAAG,GAAE,GAAG,GAAC,IAAI;IAK9B;;;;;;;;;;OAUG;IACH,aAAa,CAAC,GAAG,CAAC,EAAC,MAAM,GAAE,MAAM,GAAC,IAAI;IAKtC,MAAM,CAAC,yBAAyB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI5D,MAAM,CAAC,iBAAiB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,cAAc,EAAC,0BAA0B;IAI/F,MAAM,CAAC,aAAa,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,gBAAgB,EAAC,WAAW,CAAC,MAAM;IAIrF,MAAM,CAAC,eAAe,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,kBAAkB,EAAC,WAAW,CAAC,MAAM;IAIzF,MAAM,CAAC,cAAc,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,iBAAiB,EAAC,WAAW,CAAC,MAAM;IAIvF,MAAM,CAAC,gBAAgB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,mBAAmB,EAAC,WAAW,CAAC,MAAM;IAI3F,MAAM,CAAC,uBAAuB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;CAS7E","file":"sparse-matrix-index-c-s-x.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.js b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.js
new file mode 100644
index 0000000000000000000000000000000000000000..8a067b6e16cf35f010fa84b1b83777a5d5295ddd
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.js
@@ -0,0 +1,124 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.SparseMatrixIndexCSX = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const buffer_js_1 = require("./buffer.js");
+const int_js_1 = require("./int.js");
+const sparse_matrix_compressed_axis_js_1 = require("./sparse-matrix-compressed-axis.js");
+/**
+ * Compressed Sparse format, that is matrix-specific.
+ */
+class SparseMatrixIndexCSX {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsSparseMatrixIndexCSX(bb, obj) {
+        return (obj || new SparseMatrixIndexCSX()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsSparseMatrixIndexCSX(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new SparseMatrixIndexCSX()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * Which axis, row or column, is compressed
+     */
+    compressedAxis() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : sparse_matrix_compressed_axis_js_1.SparseMatrixCompressedAxis.Row;
+    }
+    /**
+     * The type of values in indptrBuffer
+     */
+    indptrType(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? (obj || new int_js_1.Int()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    /**
+     * indptrBuffer stores the location and size of indptr array that
+     * represents the range of the rows.
+     * The i-th row spans from `indptr[i]` to `indptr[i+1]` in the data.
+     * The length of this array is 1 + (the number of rows), and the type
+     * of index value is long.
+     *
+     * For example, let X be the following 6x4 matrix:
+     * ```text
+     *   X := [[0, 1, 2, 0],
+     *         [0, 0, 3, 0],
+     *         [0, 4, 0, 5],
+     *         [0, 0, 0, 0],
+     *         [6, 0, 7, 8],
+     *         [0, 9, 0, 0]].
+     * ```
+     * The array of non-zero values in X is:
+     * ```text
+     *   values(X) = [1, 2, 3, 4, 5, 6, 7, 8, 9].
+     * ```
+     * And the indptr of X is:
+     * ```text
+     *   indptr(X) = [0, 2, 3, 5, 5, 8, 10].
+     * ```
+     */
+    indptrBuffer(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? (obj || new buffer_js_1.Buffer()).__init(this.bb_pos + offset, this.bb) : null;
+    }
+    /**
+     * The type of values in indicesBuffer
+     */
+    indicesType(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? (obj || new int_js_1.Int()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    /**
+     * indicesBuffer stores the location and size of the array that
+     * contains the column indices of the corresponding non-zero values.
+     * The type of index value is long.
+     *
+     * For example, the indices of the above X is:
+     * ```text
+     *   indices(X) = [1, 2, 2, 1, 3, 0, 2, 3, 1].
+     * ```
+     * Note that the indices are sorted in lexicographical order for each row.
+     */
+    indicesBuffer(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? (obj || new buffer_js_1.Buffer()).__init(this.bb_pos + offset, this.bb) : null;
+    }
+    static startSparseMatrixIndexCSX(builder) {
+        builder.startObject(5);
+    }
+    static addCompressedAxis(builder, compressedAxis) {
+        builder.addFieldInt16(0, compressedAxis, sparse_matrix_compressed_axis_js_1.SparseMatrixCompressedAxis.Row);
+    }
+    static addIndptrType(builder, indptrTypeOffset) {
+        builder.addFieldOffset(1, indptrTypeOffset, 0);
+    }
+    static addIndptrBuffer(builder, indptrBufferOffset) {
+        builder.addFieldStruct(2, indptrBufferOffset, 0);
+    }
+    static addIndicesType(builder, indicesTypeOffset) {
+        builder.addFieldOffset(3, indicesTypeOffset, 0);
+    }
+    static addIndicesBuffer(builder, indicesBufferOffset) {
+        builder.addFieldStruct(4, indicesBufferOffset, 0);
+    }
+    static endSparseMatrixIndexCSX(builder) {
+        const offset = builder.endObject();
+        builder.requiredField(offset, 6); // indptrType
+        builder.requiredField(offset, 8); // indptrBuffer
+        builder.requiredField(offset, 10); // indicesType
+        builder.requiredField(offset, 12); // indicesBuffer
+        return offset;
+    }
+}
+exports.SparseMatrixIndexCSX = SparseMatrixIndexCSX;
+
+//# sourceMappingURL=sparse-matrix-index-c-s-x.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.js.map b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..e708ab43ae6d38f3ac23c86561feab3b48d47028
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.mjs b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..5b48bdb39da3e46832f5fbb92e2b44f6229446a5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.mjs
@@ -0,0 +1,119 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { Buffer } from './buffer.mjs';
+import { Int } from './int.mjs';
+import { SparseMatrixCompressedAxis } from './sparse-matrix-compressed-axis.mjs';
+/**
+ * Compressed Sparse format, that is matrix-specific.
+ */
+export class SparseMatrixIndexCSX {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsSparseMatrixIndexCSX(bb, obj) {
+        return (obj || new SparseMatrixIndexCSX()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsSparseMatrixIndexCSX(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new SparseMatrixIndexCSX()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * Which axis, row or column, is compressed
+     */
+    compressedAxis() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : SparseMatrixCompressedAxis.Row;
+    }
+    /**
+     * The type of values in indptrBuffer
+     */
+    indptrType(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? (obj || new Int()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    /**
+     * indptrBuffer stores the location and size of indptr array that
+     * represents the range of the rows.
+     * The i-th row spans from `indptr[i]` to `indptr[i+1]` in the data.
+     * The length of this array is 1 + (the number of rows), and the type
+     * of index value is long.
+     *
+     * For example, let X be the following 6x4 matrix:
+     * ```text
+     *   X := [[0, 1, 2, 0],
+     *         [0, 0, 3, 0],
+     *         [0, 4, 0, 5],
+     *         [0, 0, 0, 0],
+     *         [6, 0, 7, 8],
+     *         [0, 9, 0, 0]].
+     * ```
+     * The array of non-zero values in X is:
+     * ```text
+     *   values(X) = [1, 2, 3, 4, 5, 6, 7, 8, 9].
+     * ```
+     * And the indptr of X is:
+     * ```text
+     *   indptr(X) = [0, 2, 3, 5, 5, 8, 10].
+     * ```
+     */
+    indptrBuffer(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? (obj || new Buffer()).__init(this.bb_pos + offset, this.bb) : null;
+    }
+    /**
+     * The type of values in indicesBuffer
+     */
+    indicesType(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? (obj || new Int()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    /**
+     * indicesBuffer stores the location and size of the array that
+     * contains the column indices of the corresponding non-zero values.
+     * The type of index value is long.
+     *
+     * For example, the indices of the above X is:
+     * ```text
+     *   indices(X) = [1, 2, 2, 1, 3, 0, 2, 3, 1].
+     * ```
+     * Note that the indices are sorted in lexicographical order for each row.
+     */
+    indicesBuffer(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? (obj || new Buffer()).__init(this.bb_pos + offset, this.bb) : null;
+    }
+    static startSparseMatrixIndexCSX(builder) {
+        builder.startObject(5);
+    }
+    static addCompressedAxis(builder, compressedAxis) {
+        builder.addFieldInt16(0, compressedAxis, SparseMatrixCompressedAxis.Row);
+    }
+    static addIndptrType(builder, indptrTypeOffset) {
+        builder.addFieldOffset(1, indptrTypeOffset, 0);
+    }
+    static addIndptrBuffer(builder, indptrBufferOffset) {
+        builder.addFieldStruct(2, indptrBufferOffset, 0);
+    }
+    static addIndicesType(builder, indicesTypeOffset) {
+        builder.addFieldOffset(3, indicesTypeOffset, 0);
+    }
+    static addIndicesBuffer(builder, indicesBufferOffset) {
+        builder.addFieldStruct(4, indicesBufferOffset, 0);
+    }
+    static endSparseMatrixIndexCSX(builder) {
+        const offset = builder.endObject();
+        builder.requiredField(offset, 6); // indptrType
+        builder.requiredField(offset, 8); // indptrBuffer
+        builder.requiredField(offset, 10); // indicesType
+        builder.requiredField(offset, 12); // indicesBuffer
+        return offset;
+    }
+}
+
+//# sourceMappingURL=sparse-matrix-index-c-s-x.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.mjs.map b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..4ba7b2c5addef140432f69bf9d3e304a19e248f1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-matrix-index-c-s-x.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.d.ts b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..4f6cb9de120f55e041f840aafbaf14527ba10cd7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.d.ts
@@ -0,0 +1,74 @@
+import * as flatbuffers from 'flatbuffers';
+import { Buffer } from './buffer.js';
+import { Int } from './int.js';
+/**
+ * ----------------------------------------------------------------------
+ * EXPERIMENTAL: Data structures for sparse tensors
+ * Coordinate (COO) format of sparse tensor index.
+ *
+ * COO's index list are represented as a NxM matrix,
+ * where N is the number of non-zero values,
+ * and M is the number of dimensions of a sparse tensor.
+ *
+ * indicesBuffer stores the location and size of the data of this indices
+ * matrix.  The value type and the stride of the indices matrix is
+ * specified in indicesType and indicesStrides fields.
+ *
+ * For example, let X be a 2x3x4x5 tensor, and it has the following
+ * 6 non-zero values:
+ * ```text
+ *   X[0, 1, 2, 0] := 1
+ *   X[1, 1, 2, 3] := 2
+ *   X[0, 2, 1, 0] := 3
+ *   X[0, 1, 3, 0] := 4
+ *   X[0, 1, 2, 1] := 5
+ *   X[1, 2, 0, 4] := 6
+ * ```
+ * In COO format, the index matrix of X is the following 4x6 matrix:
+ * ```text
+ *   [[0, 0, 0, 0, 1, 1],
+ *    [1, 1, 1, 2, 1, 2],
+ *    [2, 2, 3, 1, 2, 0],
+ *    [0, 1, 0, 0, 3, 4]]
+ * ```
+ * When isCanonical is true, the indices is sorted in lexicographical order
+ * (row-major order), and it does not have duplicated entries.  Otherwise,
+ * the indices may not be sorted, or may have duplicated entries.
+ */
+export declare class SparseTensorIndexCOO {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): SparseTensorIndexCOO;
+    static getRootAsSparseTensorIndexCOO(bb: flatbuffers.ByteBuffer, obj?: SparseTensorIndexCOO): SparseTensorIndexCOO;
+    static getSizePrefixedRootAsSparseTensorIndexCOO(bb: flatbuffers.ByteBuffer, obj?: SparseTensorIndexCOO): SparseTensorIndexCOO;
+    /**
+     * The type of values in indicesBuffer
+     */
+    indicesType(obj?: Int): Int | null;
+    /**
+     * Non-negative byte offsets to advance one value cell along each dimension
+     * If omitted, default to row-major order (C-like).
+     */
+    indicesStrides(index: number): flatbuffers.Long | null;
+    indicesStridesLength(): number;
+    /**
+     * The location and size of the indices matrix's data
+     */
+    indicesBuffer(obj?: Buffer): Buffer | null;
+    /**
+     * This flag is true if and only if the indices matrix is sorted in
+     * row-major order, and does not have duplicated entries.
+     * This sort order is the same as of Tensorflow's SparseTensor,
+     * but it is inverse order of SciPy's canonical coo_matrix
+     * (SciPy employs column-major order for its coo_matrix).
+     */
+    isCanonical(): boolean;
+    static startSparseTensorIndexCOO(builder: flatbuffers.Builder): void;
+    static addIndicesType(builder: flatbuffers.Builder, indicesTypeOffset: flatbuffers.Offset): void;
+    static addIndicesStrides(builder: flatbuffers.Builder, indicesStridesOffset: flatbuffers.Offset): void;
+    static createIndicesStridesVector(builder: flatbuffers.Builder, data: flatbuffers.Long[]): flatbuffers.Offset;
+    static startIndicesStridesVector(builder: flatbuffers.Builder, numElems: number): void;
+    static addIndicesBuffer(builder: flatbuffers.Builder, indicesBufferOffset: flatbuffers.Offset): void;
+    static addIsCanonical(builder: flatbuffers.Builder, isCanonical: boolean): void;
+    static endSparseTensorIndexCOO(builder: flatbuffers.Builder): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.d.ts.map b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..29ad884b8cd05d0fe47869bdf46575a03557910f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/sparse-tensor-index-c-o-o.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AACrC,OAAO,EAAE,GAAG,EAAE,MAAM,UAAU,CAAC;AAG/B;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;GAiCG;AACH,qBAAa,oBAAoB;IAC/B,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,oBAAoB;IAMhE,MAAM,CAAC,6BAA6B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,oBAAoB,GAAE,oBAAoB;IAI/G,MAAM,CAAC,yCAAyC,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,oBAAoB,GAAE,oBAAoB;IAK3H;;OAEG;IACH,WAAW,CAAC,GAAG,CAAC,EAAC,GAAG,GAAE,GAAG,GAAC,IAAI;IAK9B;;;OAGG;IACH,cAAc,CAAC,KAAK,EAAE,MAAM,GAAE,WAAW,CAAC,IAAI,GAAC,IAAI;IAKnD,oBAAoB,IAAG,MAAM;IAK7B;;OAEG;IACH,aAAa,CAAC,GAAG,CAAC,EAAC,MAAM,GAAE,MAAM,GAAC,IAAI;IAKtC;;;;;;OAMG;IACH,WAAW,IAAG,OAAO;IAKrB,MAAM,CAAC,yBAAyB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI5D,MAAM,CAAC,cAAc,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,iBAAiB,EAAC,WAAW,CAAC,MAAM;IAIvF,MAAM,CAAC,iBAAiB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,oBAAoB,EAAC,WAAW,CAAC,MAAM;IAI7F,MAAM,CAAC,0BAA0B,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,WAAW,CAAC,IAAI,EAAE,GAAE,WAAW,CAAC,MAAM;IAQ1G,MAAM,CAAC,yBAAyB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAI7E,MAAM,CAAC,gBAAgB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,mBAAmB,EAAC,WAAW,CAAC,MAAM;IAI3F,MAAM,CAAC,cAAc,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,WAAW,EAAC,OAAO;IAItE,MAAM,CAAC,uBAAuB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;CAO7E","file":"sparse-tensor-index-c-o-o.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.js b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.js
new file mode 100644
index 0000000000000000000000000000000000000000..23b2a17dc625164212710a00379075dc47378e16
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.js
@@ -0,0 +1,131 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.SparseTensorIndexCOO = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const buffer_js_1 = require("./buffer.js");
+const int_js_1 = require("./int.js");
+/**
+ * ----------------------------------------------------------------------
+ * EXPERIMENTAL: Data structures for sparse tensors
+ * Coordinate (COO) format of sparse tensor index.
+ *
+ * COO's index list are represented as a NxM matrix,
+ * where N is the number of non-zero values,
+ * and M is the number of dimensions of a sparse tensor.
+ *
+ * indicesBuffer stores the location and size of the data of this indices
+ * matrix.  The value type and the stride of the indices matrix is
+ * specified in indicesType and indicesStrides fields.
+ *
+ * For example, let X be a 2x3x4x5 tensor, and it has the following
+ * 6 non-zero values:
+ * ```text
+ *   X[0, 1, 2, 0] := 1
+ *   X[1, 1, 2, 3] := 2
+ *   X[0, 2, 1, 0] := 3
+ *   X[0, 1, 3, 0] := 4
+ *   X[0, 1, 2, 1] := 5
+ *   X[1, 2, 0, 4] := 6
+ * ```
+ * In COO format, the index matrix of X is the following 4x6 matrix:
+ * ```text
+ *   [[0, 0, 0, 0, 1, 1],
+ *    [1, 1, 1, 2, 1, 2],
+ *    [2, 2, 3, 1, 2, 0],
+ *    [0, 1, 0, 0, 3, 4]]
+ * ```
+ * When isCanonical is true, the indices is sorted in lexicographical order
+ * (row-major order), and it does not have duplicated entries.  Otherwise,
+ * the indices may not be sorted, or may have duplicated entries.
+ */
+class SparseTensorIndexCOO {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsSparseTensorIndexCOO(bb, obj) {
+        return (obj || new SparseTensorIndexCOO()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsSparseTensorIndexCOO(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new SparseTensorIndexCOO()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * The type of values in indicesBuffer
+     */
+    indicesType(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? (obj || new int_js_1.Int()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    /**
+     * Non-negative byte offsets to advance one value cell along each dimension
+     * If omitted, default to row-major order (C-like).
+     */
+    indicesStrides(index) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.readInt64(this.bb.__vector(this.bb_pos + offset) + index * 8) : this.bb.createLong(0, 0);
+    }
+    indicesStridesLength() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * The location and size of the indices matrix's data
+     */
+    indicesBuffer(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? (obj || new buffer_js_1.Buffer()).__init(this.bb_pos + offset, this.bb) : null;
+    }
+    /**
+     * This flag is true if and only if the indices matrix is sorted in
+     * row-major order, and does not have duplicated entries.
+     * This sort order is the same as of Tensorflow's SparseTensor,
+     * but it is inverse order of SciPy's canonical coo_matrix
+     * (SciPy employs column-major order for its coo_matrix).
+     */
+    isCanonical() {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? !!this.bb.readInt8(this.bb_pos + offset) : false;
+    }
+    static startSparseTensorIndexCOO(builder) {
+        builder.startObject(4);
+    }
+    static addIndicesType(builder, indicesTypeOffset) {
+        builder.addFieldOffset(0, indicesTypeOffset, 0);
+    }
+    static addIndicesStrides(builder, indicesStridesOffset) {
+        builder.addFieldOffset(1, indicesStridesOffset, 0);
+    }
+    static createIndicesStridesVector(builder, data) {
+        builder.startVector(8, data.length, 8);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addInt64(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startIndicesStridesVector(builder, numElems) {
+        builder.startVector(8, numElems, 8);
+    }
+    static addIndicesBuffer(builder, indicesBufferOffset) {
+        builder.addFieldStruct(2, indicesBufferOffset, 0);
+    }
+    static addIsCanonical(builder, isCanonical) {
+        builder.addFieldInt8(3, +isCanonical, +false);
+    }
+    static endSparseTensorIndexCOO(builder) {
+        const offset = builder.endObject();
+        builder.requiredField(offset, 4); // indicesType
+        builder.requiredField(offset, 8); // indicesBuffer
+        return offset;
+    }
+}
+exports.SparseTensorIndexCOO = SparseTensorIndexCOO;
+
+//# sourceMappingURL=sparse-tensor-index-c-o-o.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.js.map b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..8ecc79275e472318ae53c4e61e76a7b254152b29
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.mjs b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..1311145b4881b0d8b3ee96b54e58d7f35b2a094e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.mjs
@@ -0,0 +1,126 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { Buffer } from './buffer.mjs';
+import { Int } from './int.mjs';
+/**
+ * ----------------------------------------------------------------------
+ * EXPERIMENTAL: Data structures for sparse tensors
+ * Coordinate (COO) format of sparse tensor index.
+ *
+ * COO's index list are represented as a NxM matrix,
+ * where N is the number of non-zero values,
+ * and M is the number of dimensions of a sparse tensor.
+ *
+ * indicesBuffer stores the location and size of the data of this indices
+ * matrix.  The value type and the stride of the indices matrix is
+ * specified in indicesType and indicesStrides fields.
+ *
+ * For example, let X be a 2x3x4x5 tensor, and it has the following
+ * 6 non-zero values:
+ * ```text
+ *   X[0, 1, 2, 0] := 1
+ *   X[1, 1, 2, 3] := 2
+ *   X[0, 2, 1, 0] := 3
+ *   X[0, 1, 3, 0] := 4
+ *   X[0, 1, 2, 1] := 5
+ *   X[1, 2, 0, 4] := 6
+ * ```
+ * In COO format, the index matrix of X is the following 4x6 matrix:
+ * ```text
+ *   [[0, 0, 0, 0, 1, 1],
+ *    [1, 1, 1, 2, 1, 2],
+ *    [2, 2, 3, 1, 2, 0],
+ *    [0, 1, 0, 0, 3, 4]]
+ * ```
+ * When isCanonical is true, the indices is sorted in lexicographical order
+ * (row-major order), and it does not have duplicated entries.  Otherwise,
+ * the indices may not be sorted, or may have duplicated entries.
+ */
+export class SparseTensorIndexCOO {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsSparseTensorIndexCOO(bb, obj) {
+        return (obj || new SparseTensorIndexCOO()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsSparseTensorIndexCOO(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new SparseTensorIndexCOO()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * The type of values in indicesBuffer
+     */
+    indicesType(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? (obj || new Int()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    /**
+     * Non-negative byte offsets to advance one value cell along each dimension
+     * If omitted, default to row-major order (C-like).
+     */
+    indicesStrides(index) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.readInt64(this.bb.__vector(this.bb_pos + offset) + index * 8) : this.bb.createLong(0, 0);
+    }
+    indicesStridesLength() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * The location and size of the indices matrix's data
+     */
+    indicesBuffer(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? (obj || new Buffer()).__init(this.bb_pos + offset, this.bb) : null;
+    }
+    /**
+     * This flag is true if and only if the indices matrix is sorted in
+     * row-major order, and does not have duplicated entries.
+     * This sort order is the same as of Tensorflow's SparseTensor,
+     * but it is inverse order of SciPy's canonical coo_matrix
+     * (SciPy employs column-major order for its coo_matrix).
+     */
+    isCanonical() {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? !!this.bb.readInt8(this.bb_pos + offset) : false;
+    }
+    static startSparseTensorIndexCOO(builder) {
+        builder.startObject(4);
+    }
+    static addIndicesType(builder, indicesTypeOffset) {
+        builder.addFieldOffset(0, indicesTypeOffset, 0);
+    }
+    static addIndicesStrides(builder, indicesStridesOffset) {
+        builder.addFieldOffset(1, indicesStridesOffset, 0);
+    }
+    static createIndicesStridesVector(builder, data) {
+        builder.startVector(8, data.length, 8);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addInt64(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startIndicesStridesVector(builder, numElems) {
+        builder.startVector(8, numElems, 8);
+    }
+    static addIndicesBuffer(builder, indicesBufferOffset) {
+        builder.addFieldStruct(2, indicesBufferOffset, 0);
+    }
+    static addIsCanonical(builder, isCanonical) {
+        builder.addFieldInt8(3, +isCanonical, +false);
+    }
+    static endSparseTensorIndexCOO(builder) {
+        const offset = builder.endObject();
+        builder.requiredField(offset, 4); // indicesType
+        builder.requiredField(offset, 8); // indicesBuffer
+        return offset;
+    }
+}
+
+//# sourceMappingURL=sparse-tensor-index-c-o-o.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.mjs.map b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..69be8fb3b54b39ca4addabd56b39dc9842d8d9e3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-o-o.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/sparse-tensor-index-c-o-o.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AACrC,OAAO,EAAE,GAAG,EAAE,MAAM,UAAU,CAAC;AAG/B;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;GAiCG;AACH,MAAM,OAAO,oBAAoB;IAAjC;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAiGb,CAAC;IAhGD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,6BAA6B,CAAC,EAAyB,EAAE,GAAyB;QACvF,OAAO,CAAC,GAAG,IAAI,IAAI,oBAAoB,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrG,CAAC;IAED,MAAM,CAAC,yCAAyC,CAAC,EAAyB,EAAE,GAAyB;QACnG,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,oBAAoB,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrG,CAAC;IAED;;OAEG;IACH,WAAW,CAAC,GAAQ;QAClB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,GAAG,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACxG,CAAC;IAED;;;OAGG;IACH,cAAc,CAAC,KAAa;QAC1B,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;IACtH,CAAC;IAED,oBAAoB;QAClB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED;;OAEG;IACH,aAAa,CAAC,GAAW;QACvB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACtF,CAAC;IAED;;;;;;OAMG;IACH,WAAW;QACT,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC;IACpE,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,OAA2B;QAC1D,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B,EAAE,iBAAoC;QACrF,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,iBAAiB,EAAE,CAAC,CAAC,CAAC;IAClD,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,OAA2B,EAAE,oBAAuC;QAC3F,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,oBAAoB,EAAE,CAAC,CAAC,CAAC;IACrD,CAAC;IAED,MAAM,CAAC,0BAA0B,CAAC,OAA2B,EAAE,IAAuB;QACpF,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACvC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACzC,OAAO,CAAC,QAAQ,CAAC,IAAI,CAAC,CAAC,CAAE,CAAC,CAAC;SAC5B;QACD,OAAO,OAAO,CAAC,SAAS,EAAE,CAAC;IAC7B,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,OAA2B,EAAE,QAAe;QAC3E,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACtC,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,OAA2B,EAAE,mBAAsC;QACzF,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,mBAAmB,EAAE,CAAC,CAAC,CAAC;IACpD,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B,EAAE,WAAmB;QACpE,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,CAAC,WAAW,EAAE,CAAC,KAAK,CAAC,CAAC;IAChD,CAAC;IAED,MAAM,CAAC,uBAAuB,CAAC,OAA2B;QACxD,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,CAAC,aAAa,CAAC,MAAM,EAAE,CAAC,CAAC,CAAA,CAAC,cAAc;QAC/C,OAAO,CAAC,aAAa,CAAC,MAAM,EAAE,CAAC,CAAC,CAAA,CAAC,gBAAgB;QACjD,OAAO,MAAM,CAAC;IAChB,CAAC;CAEA","file":"sparse-tensor-index-c-o-o.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.d.ts b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..10e57ba4b3a2552be95930d7a03d867adbb3237c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.d.ts
@@ -0,0 +1,110 @@
+import * as flatbuffers from 'flatbuffers';
+import { Buffer } from './buffer.js';
+import { Int } from './int.js';
+/**
+ * Compressed Sparse Fiber (CSF) sparse tensor index.
+ */
+export declare class SparseTensorIndexCSF {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): SparseTensorIndexCSF;
+    static getRootAsSparseTensorIndexCSF(bb: flatbuffers.ByteBuffer, obj?: SparseTensorIndexCSF): SparseTensorIndexCSF;
+    static getSizePrefixedRootAsSparseTensorIndexCSF(bb: flatbuffers.ByteBuffer, obj?: SparseTensorIndexCSF): SparseTensorIndexCSF;
+    /**
+     * CSF is a generalization of compressed sparse row (CSR) index.
+     * See [smith2017knl](http://shaden.io/pub-files/smith2017knl.pdf)
+     *
+     * CSF index recursively compresses each dimension of a tensor into a set
+     * of prefix trees. Each path from a root to leaf forms one tensor
+     * non-zero index. CSF is implemented with two arrays of buffers and one
+     * arrays of integers.
+     *
+     * For example, let X be a 2x3x4x5 tensor and let it have the following
+     * 8 non-zero values:
+     * ```text
+     *   X[0, 0, 0, 1] := 1
+     *   X[0, 0, 0, 2] := 2
+     *   X[0, 1, 0, 0] := 3
+     *   X[0, 1, 0, 2] := 4
+     *   X[0, 1, 1, 0] := 5
+     *   X[1, 1, 1, 0] := 6
+     *   X[1, 1, 1, 1] := 7
+     *   X[1, 1, 1, 2] := 8
+     * ```
+     * As a prefix tree this would be represented as:
+     * ```text
+     *         0          1
+     *        / \         |
+     *       0   1        1
+     *      /   / \       |
+     *     0   0   1      1
+     *    /|  /|   |    /| |
+     *   1 2 0 2   0   0 1 2
+     * ```
+     * The type of values in indptrBuffers
+     */
+    indptrType(obj?: Int): Int | null;
+    /**
+     * indptrBuffers stores the sparsity structure.
+     * Each two consecutive dimensions in a tensor correspond to a buffer in
+     * indptrBuffers. A pair of consecutive values at `indptrBuffers[dim][i]`
+     * and `indptrBuffers[dim][i + 1]` signify a range of nodes in
+     * `indicesBuffers[dim + 1]` who are children of `indicesBuffers[dim][i]` node.
+     *
+     * For example, the indptrBuffers for the above X is:
+     * ```text
+     *   indptrBuffer(X) = [
+     *                       [0, 2, 3],
+     *                       [0, 1, 3, 4],
+     *                       [0, 2, 4, 5, 8]
+     *                     ].
+     * ```
+     */
+    indptrBuffers(index: number, obj?: Buffer): Buffer | null;
+    indptrBuffersLength(): number;
+    /**
+     * The type of values in indicesBuffers
+     */
+    indicesType(obj?: Int): Int | null;
+    /**
+     * indicesBuffers stores values of nodes.
+     * Each tensor dimension corresponds to a buffer in indicesBuffers.
+     * For example, the indicesBuffers for the above X is:
+     * ```text
+     *   indicesBuffer(X) = [
+     *                        [0, 1],
+     *                        [0, 1, 1],
+     *                        [0, 0, 1, 1],
+     *                        [1, 2, 0, 2, 0, 0, 1, 2]
+     *                      ].
+     * ```
+     */
+    indicesBuffers(index: number, obj?: Buffer): Buffer | null;
+    indicesBuffersLength(): number;
+    /**
+     * axisOrder stores the sequence in which dimensions were traversed to
+     * produce the prefix tree.
+     * For example, the axisOrder for the above X is:
+     * ```text
+     *   axisOrder(X) = [0, 1, 2, 3].
+     * ```
+     */
+    axisOrder(index: number): number | null;
+    axisOrderLength(): number;
+    axisOrderArray(): Int32Array | null;
+    static startSparseTensorIndexCSF(builder: flatbuffers.Builder): void;
+    static addIndptrType(builder: flatbuffers.Builder, indptrTypeOffset: flatbuffers.Offset): void;
+    static addIndptrBuffers(builder: flatbuffers.Builder, indptrBuffersOffset: flatbuffers.Offset): void;
+    static startIndptrBuffersVector(builder: flatbuffers.Builder, numElems: number): void;
+    static addIndicesType(builder: flatbuffers.Builder, indicesTypeOffset: flatbuffers.Offset): void;
+    static addIndicesBuffers(builder: flatbuffers.Builder, indicesBuffersOffset: flatbuffers.Offset): void;
+    static startIndicesBuffersVector(builder: flatbuffers.Builder, numElems: number): void;
+    static addAxisOrder(builder: flatbuffers.Builder, axisOrderOffset: flatbuffers.Offset): void;
+    static createAxisOrderVector(builder: flatbuffers.Builder, data: number[] | Int32Array): flatbuffers.Offset;
+    /**
+     * @deprecated This Uint8Array overload will be removed in the future.
+     */
+    static createAxisOrderVector(builder: flatbuffers.Builder, data: number[] | Uint8Array): flatbuffers.Offset;
+    static startAxisOrderVector(builder: flatbuffers.Builder, numElems: number): void;
+    static endSparseTensorIndexCSF(builder: flatbuffers.Builder): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.d.ts.map b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..51b37c401e2a4a312f8f63b1f6f3aae2e42cec55
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.d.ts.map
@@ -0,0 +1 @@
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diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.js b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.js
new file mode 100644
index 0000000000000000000000000000000000000000..9c5d0412a0a9c81097b536248df419620dfefdc5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.js
@@ -0,0 +1,184 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.SparseTensorIndexCSF = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const buffer_js_1 = require("./buffer.js");
+const int_js_1 = require("./int.js");
+/**
+ * Compressed Sparse Fiber (CSF) sparse tensor index.
+ */
+class SparseTensorIndexCSF {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsSparseTensorIndexCSF(bb, obj) {
+        return (obj || new SparseTensorIndexCSF()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsSparseTensorIndexCSF(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new SparseTensorIndexCSF()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * CSF is a generalization of compressed sparse row (CSR) index.
+     * See [smith2017knl](http://shaden.io/pub-files/smith2017knl.pdf)
+     *
+     * CSF index recursively compresses each dimension of a tensor into a set
+     * of prefix trees. Each path from a root to leaf forms one tensor
+     * non-zero index. CSF is implemented with two arrays of buffers and one
+     * arrays of integers.
+     *
+     * For example, let X be a 2x3x4x5 tensor and let it have the following
+     * 8 non-zero values:
+     * ```text
+     *   X[0, 0, 0, 1] := 1
+     *   X[0, 0, 0, 2] := 2
+     *   X[0, 1, 0, 0] := 3
+     *   X[0, 1, 0, 2] := 4
+     *   X[0, 1, 1, 0] := 5
+     *   X[1, 1, 1, 0] := 6
+     *   X[1, 1, 1, 1] := 7
+     *   X[1, 1, 1, 2] := 8
+     * ```
+     * As a prefix tree this would be represented as:
+     * ```text
+     *         0          1
+     *        / \         |
+     *       0   1        1
+     *      /   / \       |
+     *     0   0   1      1
+     *    /|  /|   |    /| |
+     *   1 2 0 2   0   0 1 2
+     * ```
+     * The type of values in indptrBuffers
+     */
+    indptrType(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? (obj || new int_js_1.Int()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    /**
+     * indptrBuffers stores the sparsity structure.
+     * Each two consecutive dimensions in a tensor correspond to a buffer in
+     * indptrBuffers. A pair of consecutive values at `indptrBuffers[dim][i]`
+     * and `indptrBuffers[dim][i + 1]` signify a range of nodes in
+     * `indicesBuffers[dim + 1]` who are children of `indicesBuffers[dim][i]` node.
+     *
+     * For example, the indptrBuffers for the above X is:
+     * ```text
+     *   indptrBuffer(X) = [
+     *                       [0, 2, 3],
+     *                       [0, 1, 3, 4],
+     *                       [0, 2, 4, 5, 8]
+     *                     ].
+     * ```
+     */
+    indptrBuffers(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? (obj || new buffer_js_1.Buffer()).__init(this.bb.__vector(this.bb_pos + offset) + index * 16, this.bb) : null;
+    }
+    indptrBuffersLength() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * The type of values in indicesBuffers
+     */
+    indicesType(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? (obj || new int_js_1.Int()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    /**
+     * indicesBuffers stores values of nodes.
+     * Each tensor dimension corresponds to a buffer in indicesBuffers.
+     * For example, the indicesBuffers for the above X is:
+     * ```text
+     *   indicesBuffer(X) = [
+     *                        [0, 1],
+     *                        [0, 1, 1],
+     *                        [0, 0, 1, 1],
+     *                        [1, 2, 0, 2, 0, 0, 1, 2]
+     *                      ].
+     * ```
+     */
+    indicesBuffers(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? (obj || new buffer_js_1.Buffer()).__init(this.bb.__vector(this.bb_pos + offset) + index * 16, this.bb) : null;
+    }
+    indicesBuffersLength() {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * axisOrder stores the sequence in which dimensions were traversed to
+     * produce the prefix tree.
+     * For example, the axisOrder for the above X is:
+     * ```text
+     *   axisOrder(X) = [0, 1, 2, 3].
+     * ```
+     */
+    axisOrder(index) {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? this.bb.readInt32(this.bb.__vector(this.bb_pos + offset) + index * 4) : 0;
+    }
+    axisOrderLength() {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    axisOrderArray() {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? new Int32Array(this.bb.bytes().buffer, this.bb.bytes().byteOffset + this.bb.__vector(this.bb_pos + offset), this.bb.__vector_len(this.bb_pos + offset)) : null;
+    }
+    static startSparseTensorIndexCSF(builder) {
+        builder.startObject(5);
+    }
+    static addIndptrType(builder, indptrTypeOffset) {
+        builder.addFieldOffset(0, indptrTypeOffset, 0);
+    }
+    static addIndptrBuffers(builder, indptrBuffersOffset) {
+        builder.addFieldOffset(1, indptrBuffersOffset, 0);
+    }
+    static startIndptrBuffersVector(builder, numElems) {
+        builder.startVector(16, numElems, 8);
+    }
+    static addIndicesType(builder, indicesTypeOffset) {
+        builder.addFieldOffset(2, indicesTypeOffset, 0);
+    }
+    static addIndicesBuffers(builder, indicesBuffersOffset) {
+        builder.addFieldOffset(3, indicesBuffersOffset, 0);
+    }
+    static startIndicesBuffersVector(builder, numElems) {
+        builder.startVector(16, numElems, 8);
+    }
+    static addAxisOrder(builder, axisOrderOffset) {
+        builder.addFieldOffset(4, axisOrderOffset, 0);
+    }
+    static createAxisOrderVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addInt32(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startAxisOrderVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static endSparseTensorIndexCSF(builder) {
+        const offset = builder.endObject();
+        builder.requiredField(offset, 4); // indptrType
+        builder.requiredField(offset, 6); // indptrBuffers
+        builder.requiredField(offset, 8); // indicesType
+        builder.requiredField(offset, 10); // indicesBuffers
+        builder.requiredField(offset, 12); // axisOrder
+        return offset;
+    }
+}
+exports.SparseTensorIndexCSF = SparseTensorIndexCSF;
+
+//# sourceMappingURL=sparse-tensor-index-c-s-f.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.js.map b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..29769c600ca2af1f132dcfbf28a6fe41ef7e1358
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.js.map
@@ -0,0 +1 @@
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diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.mjs b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..38112ae707dc0439191b89c6e94d1f82aa83ce82
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.mjs
@@ -0,0 +1,179 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { Buffer } from './buffer.mjs';
+import { Int } from './int.mjs';
+/**
+ * Compressed Sparse Fiber (CSF) sparse tensor index.
+ */
+export class SparseTensorIndexCSF {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsSparseTensorIndexCSF(bb, obj) {
+        return (obj || new SparseTensorIndexCSF()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsSparseTensorIndexCSF(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new SparseTensorIndexCSF()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * CSF is a generalization of compressed sparse row (CSR) index.
+     * See [smith2017knl](http://shaden.io/pub-files/smith2017knl.pdf)
+     *
+     * CSF index recursively compresses each dimension of a tensor into a set
+     * of prefix trees. Each path from a root to leaf forms one tensor
+     * non-zero index. CSF is implemented with two arrays of buffers and one
+     * arrays of integers.
+     *
+     * For example, let X be a 2x3x4x5 tensor and let it have the following
+     * 8 non-zero values:
+     * ```text
+     *   X[0, 0, 0, 1] := 1
+     *   X[0, 0, 0, 2] := 2
+     *   X[0, 1, 0, 0] := 3
+     *   X[0, 1, 0, 2] := 4
+     *   X[0, 1, 1, 0] := 5
+     *   X[1, 1, 1, 0] := 6
+     *   X[1, 1, 1, 1] := 7
+     *   X[1, 1, 1, 2] := 8
+     * ```
+     * As a prefix tree this would be represented as:
+     * ```text
+     *         0          1
+     *        / \         |
+     *       0   1        1
+     *      /   / \       |
+     *     0   0   1      1
+     *    /|  /|   |    /| |
+     *   1 2 0 2   0   0 1 2
+     * ```
+     * The type of values in indptrBuffers
+     */
+    indptrType(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? (obj || new Int()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    /**
+     * indptrBuffers stores the sparsity structure.
+     * Each two consecutive dimensions in a tensor correspond to a buffer in
+     * indptrBuffers. A pair of consecutive values at `indptrBuffers[dim][i]`
+     * and `indptrBuffers[dim][i + 1]` signify a range of nodes in
+     * `indicesBuffers[dim + 1]` who are children of `indicesBuffers[dim][i]` node.
+     *
+     * For example, the indptrBuffers for the above X is:
+     * ```text
+     *   indptrBuffer(X) = [
+     *                       [0, 2, 3],
+     *                       [0, 1, 3, 4],
+     *                       [0, 2, 4, 5, 8]
+     *                     ].
+     * ```
+     */
+    indptrBuffers(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? (obj || new Buffer()).__init(this.bb.__vector(this.bb_pos + offset) + index * 16, this.bb) : null;
+    }
+    indptrBuffersLength() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * The type of values in indicesBuffers
+     */
+    indicesType(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? (obj || new Int()).__init(this.bb.__indirect(this.bb_pos + offset), this.bb) : null;
+    }
+    /**
+     * indicesBuffers stores values of nodes.
+     * Each tensor dimension corresponds to a buffer in indicesBuffers.
+     * For example, the indicesBuffers for the above X is:
+     * ```text
+     *   indicesBuffer(X) = [
+     *                        [0, 1],
+     *                        [0, 1, 1],
+     *                        [0, 0, 1, 1],
+     *                        [1, 2, 0, 2, 0, 0, 1, 2]
+     *                      ].
+     * ```
+     */
+    indicesBuffers(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? (obj || new Buffer()).__init(this.bb.__vector(this.bb_pos + offset) + index * 16, this.bb) : null;
+    }
+    indicesBuffersLength() {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * axisOrder stores the sequence in which dimensions were traversed to
+     * produce the prefix tree.
+     * For example, the axisOrder for the above X is:
+     * ```text
+     *   axisOrder(X) = [0, 1, 2, 3].
+     * ```
+     */
+    axisOrder(index) {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? this.bb.readInt32(this.bb.__vector(this.bb_pos + offset) + index * 4) : 0;
+    }
+    axisOrderLength() {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    axisOrderArray() {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? new Int32Array(this.bb.bytes().buffer, this.bb.bytes().byteOffset + this.bb.__vector(this.bb_pos + offset), this.bb.__vector_len(this.bb_pos + offset)) : null;
+    }
+    static startSparseTensorIndexCSF(builder) {
+        builder.startObject(5);
+    }
+    static addIndptrType(builder, indptrTypeOffset) {
+        builder.addFieldOffset(0, indptrTypeOffset, 0);
+    }
+    static addIndptrBuffers(builder, indptrBuffersOffset) {
+        builder.addFieldOffset(1, indptrBuffersOffset, 0);
+    }
+    static startIndptrBuffersVector(builder, numElems) {
+        builder.startVector(16, numElems, 8);
+    }
+    static addIndicesType(builder, indicesTypeOffset) {
+        builder.addFieldOffset(2, indicesTypeOffset, 0);
+    }
+    static addIndicesBuffers(builder, indicesBuffersOffset) {
+        builder.addFieldOffset(3, indicesBuffersOffset, 0);
+    }
+    static startIndicesBuffersVector(builder, numElems) {
+        builder.startVector(16, numElems, 8);
+    }
+    static addAxisOrder(builder, axisOrderOffset) {
+        builder.addFieldOffset(4, axisOrderOffset, 0);
+    }
+    static createAxisOrderVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addInt32(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startAxisOrderVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static endSparseTensorIndexCSF(builder) {
+        const offset = builder.endObject();
+        builder.requiredField(offset, 4); // indptrType
+        builder.requiredField(offset, 6); // indptrBuffers
+        builder.requiredField(offset, 8); // indicesType
+        builder.requiredField(offset, 10); // indicesBuffers
+        builder.requiredField(offset, 12); // axisOrder
+        return offset;
+    }
+}
+
+//# sourceMappingURL=sparse-tensor-index-c-s-f.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.mjs.map b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..5f70914e724695017f84ab72d1c233e291a64feb
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index-c-s-f.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/sparse-tensor-index-c-s-f.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AACrC,OAAO,EAAE,GAAG,EAAE,MAAM,UAAU,CAAC;AAG/B;;GAEG;AACH,MAAM,OAAO,oBAAoB;IAAjC;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAiMb,CAAC;IAhMD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,6BAA6B,CAAC,EAAyB,EAAE,GAAyB;QACvF,OAAO,CAAC,GAAG,IAAI,IAAI,oBAAoB,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrG,CAAC;IAED,MAAM,CAAC,yCAAyC,CAAC,EAAyB,EAAE,GAAyB;QACnG,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,oBAAoB,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrG,CAAC;IAED;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;OAgCG;IACH,UAAU,CAAC,GAAQ;QACjB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,GAAG,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACxG,CAAC;IAED;;;;;;;;;;;;;;;OAeG;IACH,aAAa,CAAC,KAAa,EAAE,GAAW;QACtC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,EAAE,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACtH,CAAC;IAED,mBAAmB;QACjB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED;;OAEG;IACH,WAAW,CAAC,GAAQ;QAClB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,GAAG,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACxG,CAAC;IAED;;;;;;;;;;;;OAYG;IACH,cAAc,CAAC,KAAa,EAAE,GAAW;QACvC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,EAAE,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACtH,CAAC;IAED,oBAAoB;QAClB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED;;;;;;;OAOG;IACH,SAAS,CAAC,KAAa;QACrB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAC9F,CAAC;IAED,eAAe;QACb,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED,cAAc;QACZ,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,UAAU,CAAC,IAAI,CAAC,EAAG,CAAC,KAAK,EAAE,CAAC,MAAM,EAAE,IAAI,CAAC,EAAG,CAAC,KAAK,EAAE,CAAC,UAAU,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACrL,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,OAA2B;QAC1D,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B,EAAE,gBAAmC;QACnF,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,gBAAgB,EAAE,CAAC,CAAC,CAAC;IACjD,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,OAA2B,EAAE,mBAAsC;QACzF,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,mBAAmB,EAAE,CAAC,CAAC,CAAC;IACpD,CAAC;IAED,MAAM,CAAC,wBAAwB,CAAC,OAA2B,EAAE,QAAe;QAC1E,OAAO,CAAC,WAAW,CAAC,EAAE,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACvC,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B,EAAE,iBAAoC;QACrF,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,iBAAiB,EAAE,CAAC,CAAC,CAAC;IAClD,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,OAA2B,EAAE,oBAAuC;QAC3F,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,oBAAoB,EAAE,CAAC,CAAC,CAAC;IACrD,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,OAA2B,EAAE,QAAe;QAC3E,OAAO,CAAC,WAAW,CAAC,EAAE,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACvC,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B,EAAE,eAAkC;QACjF,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,eAAe,EAAE,CAAC,CAAC,CAAC;IAChD,CAAC;IAOD,MAAM,CAAC,qBAAqB,CAAC,OAA2B,EAAE,IAAmC;QAC3F,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACvC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACzC,OAAO,CAAC,QAAQ,CAAC,IAAI,CAAC,CAAC,CAAE,CAAC,CAAC;SAC5B;QACD,OAAO,OAAO,CAAC,SAAS,EAAE,CAAC;IAC7B,CAAC;IAED,MAAM,CAAC,oBAAoB,CAAC,OAA2B,EAAE,QAAe;QACtE,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.d.ts b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..699faa5275ea0917800377f3957028bd3cd95901
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.d.ts
@@ -0,0 +1,11 @@
+import { SparseMatrixIndexCSX } from './sparse-matrix-index-c-s-x.js';
+import { SparseTensorIndexCOO } from './sparse-tensor-index-c-o-o.js';
+import { SparseTensorIndexCSF } from './sparse-tensor-index-c-s-f.js';
+export declare enum SparseTensorIndex {
+    NONE = 0,
+    SparseTensorIndexCOO = 1,
+    SparseMatrixIndexCSX = 2,
+    SparseTensorIndexCSF = 3
+}
+export declare function unionToSparseTensorIndex(type: SparseTensorIndex, accessor: (obj: SparseMatrixIndexCSX | SparseTensorIndexCOO | SparseTensorIndexCSF) => SparseMatrixIndexCSX | SparseTensorIndexCOO | SparseTensorIndexCSF | null): SparseMatrixIndexCSX | SparseTensorIndexCOO | SparseTensorIndexCSF | null;
+export declare function unionListToSparseTensorIndex(type: SparseTensorIndex, accessor: (index: number, obj: SparseMatrixIndexCSX | SparseTensorIndexCOO | SparseTensorIndexCSF) => SparseMatrixIndexCSX | SparseTensorIndexCOO | SparseTensorIndexCSF | null, index: number): SparseMatrixIndexCSX | SparseTensorIndexCOO | SparseTensorIndexCSF | null;
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.d.ts.map b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..cdb15ba40a6d54df4f5e5938d854605172086c1b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/sparse-tensor-index.ts"],"names":[],"mappings":"AAEA,OAAO,EAAE,oBAAoB,EAAE,MAAM,gCAAgC,CAAC;AACtE,OAAO,EAAE,oBAAoB,EAAE,MAAM,gCAAgC,CAAC;AACtE,OAAO,EAAE,oBAAoB,EAAE,MAAM,gCAAgC,CAAC;AAGtE,oBAAY,iBAAiB;IAC3B,IAAI,IAAI;IACR,oBAAoB,IAAI;IACxB,oBAAoB,IAAI;IACxB,oBAAoB,IAAI;CACzB;AAED,wBAAgB,wBAAwB,CACtC,IAAI,EAAE,iBAAiB,EACvB,QAAQ,EAAE,CAAC,GAAG,EAAC,oBAAoB,GAAC,oBAAoB,GAAC,oBAAoB,KAAK,oBAAoB,GAAC,oBAAoB,GAAC,oBAAoB,GAAC,IAAI,GACpJ,oBAAoB,GAAC,oBAAoB,GAAC,oBAAoB,GAAC,IAAI,CAQrE;AAED,wBAAgB,4BAA4B,CAC1C,IAAI,EAAE,iBAAiB,EACvB,QAAQ,EAAE,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,EAAC,oBAAoB,GAAC,oBAAoB,GAAC,oBAAoB,KAAK,oBAAoB,GAAC,oBAAoB,GAAC,oBAAoB,GAAC,IAAI,EACpK,KAAK,EAAE,MAAM,GACZ,oBAAoB,GAAC,oBAAoB,GAAC,oBAAoB,GAAC,IAAI,CAQrE","file":"sparse-tensor-index.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.js b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.js
new file mode 100644
index 0000000000000000000000000000000000000000..d7d0919a20c6508189de544bbbda855aaff61afe
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.js
@@ -0,0 +1,36 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.unionListToSparseTensorIndex = exports.unionToSparseTensorIndex = exports.SparseTensorIndex = void 0;
+const sparse_matrix_index_c_s_x_js_1 = require("./sparse-matrix-index-c-s-x.js");
+const sparse_tensor_index_c_o_o_js_1 = require("./sparse-tensor-index-c-o-o.js");
+const sparse_tensor_index_c_s_f_js_1 = require("./sparse-tensor-index-c-s-f.js");
+var SparseTensorIndex;
+(function (SparseTensorIndex) {
+    SparseTensorIndex[SparseTensorIndex["NONE"] = 0] = "NONE";
+    SparseTensorIndex[SparseTensorIndex["SparseTensorIndexCOO"] = 1] = "SparseTensorIndexCOO";
+    SparseTensorIndex[SparseTensorIndex["SparseMatrixIndexCSX"] = 2] = "SparseMatrixIndexCSX";
+    SparseTensorIndex[SparseTensorIndex["SparseTensorIndexCSF"] = 3] = "SparseTensorIndexCSF";
+})(SparseTensorIndex = exports.SparseTensorIndex || (exports.SparseTensorIndex = {}));
+function unionToSparseTensorIndex(type, accessor) {
+    switch (SparseTensorIndex[type]) {
+        case 'NONE': return null;
+        case 'SparseTensorIndexCOO': return accessor(new sparse_tensor_index_c_o_o_js_1.SparseTensorIndexCOO());
+        case 'SparseMatrixIndexCSX': return accessor(new sparse_matrix_index_c_s_x_js_1.SparseMatrixIndexCSX());
+        case 'SparseTensorIndexCSF': return accessor(new sparse_tensor_index_c_s_f_js_1.SparseTensorIndexCSF());
+        default: return null;
+    }
+}
+exports.unionToSparseTensorIndex = unionToSparseTensorIndex;
+function unionListToSparseTensorIndex(type, accessor, index) {
+    switch (SparseTensorIndex[type]) {
+        case 'NONE': return null;
+        case 'SparseTensorIndexCOO': return accessor(index, new sparse_tensor_index_c_o_o_js_1.SparseTensorIndexCOO());
+        case 'SparseMatrixIndexCSX': return accessor(index, new sparse_matrix_index_c_s_x_js_1.SparseMatrixIndexCSX());
+        case 'SparseTensorIndexCSF': return accessor(index, new sparse_tensor_index_c_s_f_js_1.SparseTensorIndexCSF());
+        default: return null;
+    }
+}
+exports.unionListToSparseTensorIndex = unionListToSparseTensorIndex;
+
+//# sourceMappingURL=sparse-tensor-index.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.js.map b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..7c9204c2936d3e666f701d0151b8bed9844a2964
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/sparse-tensor-index.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAErE,iFAAsE;AACtE,iFAAsE;AACtE,iFAAsE;AAGtE,IAAY,iBAKX;AALD,WAAY,iBAAiB;IAC3B,yDAAQ,CAAA;IACR,yFAAwB,CAAA;IACxB,yFAAwB,CAAA;IACxB,yFAAwB,CAAA;AAC1B,CAAC,EALW,iBAAiB,GAAjB,yBAAiB,KAAjB,yBAAiB,QAK5B;AAED,SAAgB,wBAAwB,CACtC,IAAuB,EACvB,QAAqJ;IAErJ,QAAO,iBAAiB,CAAC,IAAI,CAAC,EAAE;QAC9B,KAAK,MAAM,CAAC,CAAC,OAAO,IAAI,CAAC;QACzB,KAAK,sBAAsB,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,mDAAoB,EAAE,CAA0B,CAAC;QAClG,KAAK,sBAAsB,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,mDAAoB,EAAE,CAA0B,CAAC;QAClG,KAAK,sBAAsB,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,mDAAoB,EAAE,CAA0B,CAAC;QAClG,OAAO,CAAC,CAAC,OAAO,IAAI,CAAC;KACtB;AACH,CAAC;AAXD,4DAWC;AAED,SAAgB,4BAA4B,CAC1C,IAAuB,EACvB,QAAoK,EACpK,KAAa;IAEb,QAAO,iBAAiB,CAAC,IAAI,CAAC,EAAE;QAC9B,KAAK,MAAM,CAAC,CAAC,OAAO,IAAI,CAAC;QACzB,KAAK,sBAAsB,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,mDAAoB,EAAE,CAA0B,CAAC;QACzG,KAAK,sBAAsB,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,mDAAoB,EAAE,CAA0B,CAAC;QACzG,KAAK,sBAAsB,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,mDAAoB,EAAE,CAA0B,CAAC;QACzG,OAAO,CAAC,CAAC,OAAO,IAAI,CAAC;KACtB;AACH,CAAC;AAZD,oEAYC","file":"sparse-tensor-index.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.mjs b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..f6d1abbfd99a13730040826a6682aa5127e0cf65
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.mjs
@@ -0,0 +1,31 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import { SparseMatrixIndexCSX } from './sparse-matrix-index-c-s-x.mjs';
+import { SparseTensorIndexCOO } from './sparse-tensor-index-c-o-o.mjs';
+import { SparseTensorIndexCSF } from './sparse-tensor-index-c-s-f.mjs';
+export var SparseTensorIndex;
+(function (SparseTensorIndex) {
+    SparseTensorIndex[SparseTensorIndex["NONE"] = 0] = "NONE";
+    SparseTensorIndex[SparseTensorIndex["SparseTensorIndexCOO"] = 1] = "SparseTensorIndexCOO";
+    SparseTensorIndex[SparseTensorIndex["SparseMatrixIndexCSX"] = 2] = "SparseMatrixIndexCSX";
+    SparseTensorIndex[SparseTensorIndex["SparseTensorIndexCSF"] = 3] = "SparseTensorIndexCSF";
+})(SparseTensorIndex || (SparseTensorIndex = {}));
+export function unionToSparseTensorIndex(type, accessor) {
+    switch (SparseTensorIndex[type]) {
+        case 'NONE': return null;
+        case 'SparseTensorIndexCOO': return accessor(new SparseTensorIndexCOO());
+        case 'SparseMatrixIndexCSX': return accessor(new SparseMatrixIndexCSX());
+        case 'SparseTensorIndexCSF': return accessor(new SparseTensorIndexCSF());
+        default: return null;
+    }
+}
+export function unionListToSparseTensorIndex(type, accessor, index) {
+    switch (SparseTensorIndex[type]) {
+        case 'NONE': return null;
+        case 'SparseTensorIndexCOO': return accessor(index, new SparseTensorIndexCOO());
+        case 'SparseMatrixIndexCSX': return accessor(index, new SparseMatrixIndexCSX());
+        case 'SparseTensorIndexCSF': return accessor(index, new SparseTensorIndexCSF());
+        default: return null;
+    }
+}
+
+//# sourceMappingURL=sparse-tensor-index.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.mjs.map b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..2a6b53789ed94d08bdac7494c8a26e483ebfdb15
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor-index.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/sparse-tensor-index.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,EAAE,oBAAoB,EAAE,MAAM,gCAAgC,CAAC;AACtE,OAAO,EAAE,oBAAoB,EAAE,MAAM,gCAAgC,CAAC;AACtE,OAAO,EAAE,oBAAoB,EAAE,MAAM,gCAAgC,CAAC;AAGtE,MAAM,CAAN,IAAY,iBAKX;AALD,WAAY,iBAAiB;IAC3B,yDAAQ,CAAA;IACR,yFAAwB,CAAA;IACxB,yFAAwB,CAAA;IACxB,yFAAwB,CAAA;AAC1B,CAAC,EALW,iBAAiB,KAAjB,iBAAiB,QAK5B;AAED,MAAM,UAAU,wBAAwB,CACtC,IAAuB,EACvB,QAAqJ;IAErJ,QAAO,iBAAiB,CAAC,IAAI,CAAC,EAAE;QAC9B,KAAK,MAAM,CAAC,CAAC,OAAO,IAAI,CAAC;QACzB,KAAK,sBAAsB,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,oBAAoB,EAAE,CAA0B,CAAC;QAClG,KAAK,sBAAsB,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,oBAAoB,EAAE,CAA0B,CAAC;QAClG,KAAK,sBAAsB,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,oBAAoB,EAAE,CAA0B,CAAC;QAClG,OAAO,CAAC,CAAC,OAAO,IAAI,CAAC;KACtB;AACH,CAAC;AAED,MAAM,UAAU,4BAA4B,CAC1C,IAAuB,EACvB,QAAoK,EACpK,KAAa;IAEb,QAAO,iBAAiB,CAAC,IAAI,CAAC,EAAE;QAC9B,KAAK,MAAM,CAAC,CAAC,OAAO,IAAI,CAAC;QACzB,KAAK,sBAAsB,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,oBAAoB,EAAE,CAA0B,CAAC;QACzG,KAAK,sBAAsB,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,oBAAoB,EAAE,CAA0B,CAAC;QACzG,KAAK,sBAAsB,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,oBAAoB,EAAE,CAA0B,CAAC;QACzG,OAAO,CAAC,CAAC,OAAO,IAAI,CAAC;KACtB;AACH,CAAC","file":"sparse-tensor-index.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor.d.ts b/igv_component/node_modules/apache-arrow/fb/sparse-tensor.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..8f8c7a06a6b6b743deeb9b1fe339dbe8e674e9e7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor.d.ts
@@ -0,0 +1,50 @@
+import * as flatbuffers from 'flatbuffers';
+import { Buffer } from './buffer.js';
+import { SparseTensorIndex } from './sparse-tensor-index.js';
+import { TensorDim } from './tensor-dim.js';
+import { Type } from './type.js';
+export declare class SparseTensor {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): SparseTensor;
+    static getRootAsSparseTensor(bb: flatbuffers.ByteBuffer, obj?: SparseTensor): SparseTensor;
+    static getSizePrefixedRootAsSparseTensor(bb: flatbuffers.ByteBuffer, obj?: SparseTensor): SparseTensor;
+    typeType(): Type;
+    /**
+     * The type of data contained in a value cell.
+     * Currently only fixed-width value types are supported,
+     * no strings or nested types.
+     */
+    type<T extends flatbuffers.Table>(obj: any): any | null;
+    /**
+     * The dimensions of the tensor, optionally named.
+     */
+    shape(index: number, obj?: TensorDim): TensorDim | null;
+    shapeLength(): number;
+    /**
+     * The number of non-zero values in a sparse tensor.
+     */
+    nonZeroLength(): flatbuffers.Long;
+    sparseIndexType(): SparseTensorIndex;
+    /**
+     * Sparse tensor index
+     */
+    sparseIndex<T extends flatbuffers.Table>(obj: any): any | null;
+    /**
+     * The location and size of the tensor's data
+     */
+    data(obj?: Buffer): Buffer | null;
+    static startSparseTensor(builder: flatbuffers.Builder): void;
+    static addTypeType(builder: flatbuffers.Builder, typeType: Type): void;
+    static addType(builder: flatbuffers.Builder, typeOffset: flatbuffers.Offset): void;
+    static addShape(builder: flatbuffers.Builder, shapeOffset: flatbuffers.Offset): void;
+    static createShapeVector(builder: flatbuffers.Builder, data: flatbuffers.Offset[]): flatbuffers.Offset;
+    static startShapeVector(builder: flatbuffers.Builder, numElems: number): void;
+    static addNonZeroLength(builder: flatbuffers.Builder, nonZeroLength: flatbuffers.Long): void;
+    static addSparseIndexType(builder: flatbuffers.Builder, sparseIndexType: SparseTensorIndex): void;
+    static addSparseIndex(builder: flatbuffers.Builder, sparseIndexOffset: flatbuffers.Offset): void;
+    static addData(builder: flatbuffers.Builder, dataOffset: flatbuffers.Offset): void;
+    static endSparseTensor(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static finishSparseTensorBuffer(builder: flatbuffers.Builder, offset: flatbuffers.Offset): void;
+    static finishSizePrefixedSparseTensorBuffer(builder: flatbuffers.Builder, offset: flatbuffers.Offset): void;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor.d.ts.map b/igv_component/node_modules/apache-arrow/fb/sparse-tensor.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..73d979470cb2bcdc675af3ef1de2652e9e9d2a56
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/sparse-tensor.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AACrC,OAAO,EAAE,iBAAiB,EAAE,MAAM,0BAA0B,CAAC;AAC7D,OAAO,EAAE,SAAS,EAAE,MAAM,iBAAiB,CAAC;AAC5C,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AAGjC,qBAAa,YAAY;IACvB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,YAAY;IAMxD,MAAM,CAAC,qBAAqB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,YAAY,GAAE,YAAY;IAIvF,MAAM,CAAC,iCAAiC,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,YAAY,GAAE,YAAY;IAKnG,QAAQ,IAAG,IAAI;IAKf;;;;OAIG;IAEH,IAAI,CAAC,CAAC,SAAS,WAAW,CAAC,KAAK,EAAE,GAAG,EAAC,GAAG,GAAE,GAAG,GAAC,IAAI;IAKnD;;OAEG;IACH,KAAK,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,CAAC,EAAC,SAAS,GAAE,SAAS,GAAC,IAAI;IAKnD,WAAW,IAAG,MAAM;IAKpB;;OAEG;IACH,aAAa,IAAG,WAAW,CAAC,IAAI;IAKhC,eAAe,IAAG,iBAAiB;IAKnC;;OAEG;IAEH,WAAW,CAAC,CAAC,SAAS,WAAW,CAAC,KAAK,EAAE,GAAG,EAAC,GAAG,GAAE,GAAG,GAAC,IAAI;IAK1D;;OAEG;IACH,IAAI,CAAC,GAAG,CAAC,EAAC,MAAM,GAAE,MAAM,GAAC,IAAI;IAK7B,MAAM,CAAC,iBAAiB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAIpD,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,IAAI;IAI7D,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,UAAU,EAAC,WAAW,CAAC,MAAM;IAIzE,MAAM,CAAC,QAAQ,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,WAAW,EAAC,WAAW,CAAC,MAAM;IAI3E,MAAM,CAAC,iBAAiB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,WAAW,CAAC,MAAM,EAAE,GAAE,WAAW,CAAC,MAAM;IAQnG,MAAM,CAAC,gBAAgB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAIpE,MAAM,CAAC,gBAAgB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,aAAa,EAAC,WAAW,CAAC,IAAI;IAInF,MAAM,CAAC,kBAAkB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,eAAe,EAAC,iBAAiB;IAIxF,MAAM,CAAC,cAAc,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,iBAAiB,EAAC,WAAW,CAAC,MAAM;IAIvF,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,UAAU,EAAC,WAAW,CAAC,MAAM;IAIzE,MAAM,CAAC,eAAe,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAStE,MAAM,CAAC,wBAAwB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,MAAM,EAAC,WAAW,CAAC,MAAM;IAItF,MAAM,CAAC,oCAAoC,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,MAAM,EAAC,WAAW,CAAC,MAAM;CAIjG","file":"sparse-tensor.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor.js b/igv_component/node_modules/apache-arrow/fb/sparse-tensor.js
new file mode 100644
index 0000000000000000000000000000000000000000..eefb23bbf831cf8b570ad57b8e75f92f96b74906
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor.js
@@ -0,0 +1,130 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.SparseTensor = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const buffer_js_1 = require("./buffer.js");
+const sparse_tensor_index_js_1 = require("./sparse-tensor-index.js");
+const tensor_dim_js_1 = require("./tensor-dim.js");
+const type_js_1 = require("./type.js");
+class SparseTensor {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsSparseTensor(bb, obj) {
+        return (obj || new SparseTensor()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsSparseTensor(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new SparseTensor()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    typeType() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readUint8(this.bb_pos + offset) : type_js_1.Type.NONE;
+    }
+    /**
+     * The type of data contained in a value cell.
+     * Currently only fixed-width value types are supported,
+     * no strings or nested types.
+     */
+    // @ts-ignore
+    type(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__union(obj, this.bb_pos + offset) : null;
+    }
+    /**
+     * The dimensions of the tensor, optionally named.
+     */
+    shape(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? (obj || new tensor_dim_js_1.TensorDim()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
+    }
+    shapeLength() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * The number of non-zero values in a sparse tensor.
+     */
+    nonZeroLength() {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.readInt64(this.bb_pos + offset) : this.bb.createLong(0, 0);
+    }
+    sparseIndexType() {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? this.bb.readUint8(this.bb_pos + offset) : sparse_tensor_index_js_1.SparseTensorIndex.NONE;
+    }
+    /**
+     * Sparse tensor index
+     */
+    // @ts-ignore
+    sparseIndex(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 14);
+        return offset ? this.bb.__union(obj, this.bb_pos + offset) : null;
+    }
+    /**
+     * The location and size of the tensor's data
+     */
+    data(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 16);
+        return offset ? (obj || new buffer_js_1.Buffer()).__init(this.bb_pos + offset, this.bb) : null;
+    }
+    static startSparseTensor(builder) {
+        builder.startObject(7);
+    }
+    static addTypeType(builder, typeType) {
+        builder.addFieldInt8(0, typeType, type_js_1.Type.NONE);
+    }
+    static addType(builder, typeOffset) {
+        builder.addFieldOffset(1, typeOffset, 0);
+    }
+    static addShape(builder, shapeOffset) {
+        builder.addFieldOffset(2, shapeOffset, 0);
+    }
+    static createShapeVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addOffset(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startShapeVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static addNonZeroLength(builder, nonZeroLength) {
+        builder.addFieldInt64(3, nonZeroLength, builder.createLong(0, 0));
+    }
+    static addSparseIndexType(builder, sparseIndexType) {
+        builder.addFieldInt8(4, sparseIndexType, sparse_tensor_index_js_1.SparseTensorIndex.NONE);
+    }
+    static addSparseIndex(builder, sparseIndexOffset) {
+        builder.addFieldOffset(5, sparseIndexOffset, 0);
+    }
+    static addData(builder, dataOffset) {
+        builder.addFieldStruct(6, dataOffset, 0);
+    }
+    static endSparseTensor(builder) {
+        const offset = builder.endObject();
+        builder.requiredField(offset, 6); // type
+        builder.requiredField(offset, 8); // shape
+        builder.requiredField(offset, 14); // sparseIndex
+        builder.requiredField(offset, 16); // data
+        return offset;
+    }
+    static finishSparseTensorBuffer(builder, offset) {
+        builder.finish(offset);
+    }
+    static finishSizePrefixedSparseTensorBuffer(builder, offset) {
+        builder.finish(offset, undefined, true);
+    }
+}
+exports.SparseTensor = SparseTensor;
+
+//# sourceMappingURL=sparse-tensor.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor.js.map b/igv_component/node_modules/apache-arrow/fb/sparse-tensor.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..f160adfc7ad7516187fc1176fd4d6fe836bdf454
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor.mjs b/igv_component/node_modules/apache-arrow/fb/sparse-tensor.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..d2738c82fd6b8060485e09104da372dce86e6871
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor.mjs
@@ -0,0 +1,125 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { Buffer } from './buffer.mjs';
+import { SparseTensorIndex } from './sparse-tensor-index.mjs';
+import { TensorDim } from './tensor-dim.mjs';
+import { Type } from './type.mjs';
+export class SparseTensor {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsSparseTensor(bb, obj) {
+        return (obj || new SparseTensor()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsSparseTensor(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new SparseTensor()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    typeType() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readUint8(this.bb_pos + offset) : Type.NONE;
+    }
+    /**
+     * The type of data contained in a value cell.
+     * Currently only fixed-width value types are supported,
+     * no strings or nested types.
+     */
+    // @ts-ignore
+    type(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__union(obj, this.bb_pos + offset) : null;
+    }
+    /**
+     * The dimensions of the tensor, optionally named.
+     */
+    shape(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? (obj || new TensorDim()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
+    }
+    shapeLength() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * The number of non-zero values in a sparse tensor.
+     */
+    nonZeroLength() {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.readInt64(this.bb_pos + offset) : this.bb.createLong(0, 0);
+    }
+    sparseIndexType() {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? this.bb.readUint8(this.bb_pos + offset) : SparseTensorIndex.NONE;
+    }
+    /**
+     * Sparse tensor index
+     */
+    // @ts-ignore
+    sparseIndex(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 14);
+        return offset ? this.bb.__union(obj, this.bb_pos + offset) : null;
+    }
+    /**
+     * The location and size of the tensor's data
+     */
+    data(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 16);
+        return offset ? (obj || new Buffer()).__init(this.bb_pos + offset, this.bb) : null;
+    }
+    static startSparseTensor(builder) {
+        builder.startObject(7);
+    }
+    static addTypeType(builder, typeType) {
+        builder.addFieldInt8(0, typeType, Type.NONE);
+    }
+    static addType(builder, typeOffset) {
+        builder.addFieldOffset(1, typeOffset, 0);
+    }
+    static addShape(builder, shapeOffset) {
+        builder.addFieldOffset(2, shapeOffset, 0);
+    }
+    static createShapeVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addOffset(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startShapeVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static addNonZeroLength(builder, nonZeroLength) {
+        builder.addFieldInt64(3, nonZeroLength, builder.createLong(0, 0));
+    }
+    static addSparseIndexType(builder, sparseIndexType) {
+        builder.addFieldInt8(4, sparseIndexType, SparseTensorIndex.NONE);
+    }
+    static addSparseIndex(builder, sparseIndexOffset) {
+        builder.addFieldOffset(5, sparseIndexOffset, 0);
+    }
+    static addData(builder, dataOffset) {
+        builder.addFieldStruct(6, dataOffset, 0);
+    }
+    static endSparseTensor(builder) {
+        const offset = builder.endObject();
+        builder.requiredField(offset, 6); // type
+        builder.requiredField(offset, 8); // shape
+        builder.requiredField(offset, 14); // sparseIndex
+        builder.requiredField(offset, 16); // data
+        return offset;
+    }
+    static finishSparseTensorBuffer(builder, offset) {
+        builder.finish(offset);
+    }
+    static finishSizePrefixedSparseTensorBuffer(builder, offset) {
+        builder.finish(offset, undefined, true);
+    }
+}
+
+//# sourceMappingURL=sparse-tensor.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/sparse-tensor.mjs.map b/igv_component/node_modules/apache-arrow/fb/sparse-tensor.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..ece30f68ee7a6b68ef117e027227d32bde866946
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/sparse-tensor.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/sparse-tensor.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AACrC,OAAO,EAAE,iBAAiB,EAAE,MAAM,0BAA0B,CAAC;AAC7D,OAAO,EAAE,SAAS,EAAE,MAAM,iBAAiB,CAAC;AAC5C,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AAGjC,MAAM,OAAO,YAAY;IAAzB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAwIb,CAAC;IAvID,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,qBAAqB,CAAC,EAAyB,EAAE,GAAiB;QACvE,OAAO,CAAC,GAAG,IAAI,IAAI,YAAY,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC7F,CAAC;IAED,MAAM,CAAC,iCAAiC,CAAC,EAAyB,EAAE,GAAiB;QACnF,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,YAAY,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC7F,CAAC;IAED,QAAQ;QACN,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,IAAI,CAAC;IACvE,CAAC;IAED;;;;OAIG;IACH,aAAa;IACb,IAAI,CAA8B,GAAO;QACvC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,OAAO,CAAC,GAAG,EAAE,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACrE,CAAC;IAED;;OAEG;IACH,KAAK,CAAC,KAAa,EAAE,GAAc;QACjC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,CAAC,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IAC7I,CAAC;IAED,WAAW;QACT,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED;;OAEG;IACH,aAAa;QACX,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;IACvF,CAAC;IAED,eAAe;QACb,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,iBAAiB,CAAC,IAAI,CAAC;IACpF,CAAC;IAED;;OAEG;IACH,aAAa;IACb,WAAW,CAA8B,GAAO;QAC9C,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,OAAO,CAAC,GAAG,EAAE,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACrE,CAAC;IAED;;OAEG;IACH,IAAI,CAAC,GAAW;QACd,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACtF,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,OAA2B;QAClD,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,QAAa;QAC3D,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,QAAQ,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;IAC/C,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,UAA6B;QACvE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,UAAU,EAAE,CAAC,CAAC,CAAC;IAC3C,CAAC;IAED,MAAM,CAAC,QAAQ,CAAC,OAA2B,EAAE,WAA8B;QACzE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,WAAW,EAAE,CAAC,CAAC,CAAC;IAC5C,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,OAA2B,EAAE,IAAyB;QAC7E,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACvC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACzC,OAAO,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC,CAAE,CAAC,CAAC;SAC7B;QACD,OAAO,OAAO,CAAC,SAAS,EAAE,CAAC;IAC7B,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,OAA2B,EAAE,QAAe;QAClE,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACtC,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,OAA2B,EAAE,aAA8B;QACjF,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,aAAa,EAAE,OAAO,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;IACpE,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B,EAAE,eAAiC;QACtF,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,eAAe,EAAE,iBAAiB,CAAC,IAAI,CAAC,CAAC;IACnE,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B,EAAE,iBAAoC;QACrF,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,iBAAiB,EAAE,CAAC,CAAC,CAAC;IAClD,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,UAA6B;QACvE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,UAAU,EAAE,CAAC,CAAC,CAAC;IAC3C,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,OAA2B;QAChD,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,CAAC,aAAa,CAAC,MAAM,EAAE,CAAC,CAAC,CAAA,CAAC,OAAO;QACxC,OAAO,CAAC,aAAa,CAAC,MAAM,EAAE,CAAC,CAAC,CAAA,CAAC,QAAQ;QACzC,OAAO,CAAC,aAAa,CAAC,MAAM,EAAE,EAAE,CAAC,CAAA,CAAC,cAAc;QAChD,OAAO,CAAC,aAAa,CAAC,MAAM,EAAE,EAAE,CAAC,CAAA,CAAC,OAAO;QACzC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,wBAAwB,CAAC,OAA2B,EAAE,MAAyB;QACpF,OAAO,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC;IACzB,CAAC;IAED,MAA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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/struct_.d.ts b/igv_component/node_modules/apache-arrow/fb/struct_.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..7ee413bd9d2b05e7747932ce7dc57b08142c887e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/struct_.d.ts
@@ -0,0 +1,16 @@
+import * as flatbuffers from 'flatbuffers';
+/**
+ * A Struct_ in the flatbuffer metadata is the same as an Arrow Struct
+ * (according to the physical memory layout). We used Struct_ here as
+ * Struct is a reserved word in Flatbuffers
+ */
+export declare class Struct_ {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Struct_;
+    static getRootAsStruct_(bb: flatbuffers.ByteBuffer, obj?: Struct_): Struct_;
+    static getSizePrefixedRootAsStruct_(bb: flatbuffers.ByteBuffer, obj?: Struct_): Struct_;
+    static startStruct_(builder: flatbuffers.Builder): void;
+    static endStruct_(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createStruct_(builder: flatbuffers.Builder): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/struct_.d.ts.map b/igv_component/node_modules/apache-arrow/fb/struct_.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..fd58a9eb92f2a3a3812d1a24933564fd5cc66897
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/struct_.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/struct_.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;;GAIG;AACH,qBAAa,OAAO;IAClB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,OAAO;IAMnD,MAAM,CAAC,gBAAgB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,OAAO,GAAE,OAAO;IAIxE,MAAM,CAAC,4BAA4B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,OAAO,GAAE,OAAO;IAKpF,MAAM,CAAC,YAAY,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI/C,MAAM,CAAC,UAAU,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKjE,MAAM,CAAC,aAAa,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;CAInE","file":"struct_.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/struct_.js b/igv_component/node_modules/apache-arrow/fb/struct_.js
new file mode 100644
index 0000000000000000000000000000000000000000..d3e69de23be33f2a128ec0b45b826f6f1624c401
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/struct_.js
@@ -0,0 +1,43 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Struct_ = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+/**
+ * A Struct_ in the flatbuffer metadata is the same as an Arrow Struct
+ * (according to the physical memory layout). We used Struct_ here as
+ * Struct is a reserved word in Flatbuffers
+ */
+class Struct_ {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsStruct_(bb, obj) {
+        return (obj || new Struct_()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsStruct_(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Struct_()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startStruct_(builder) {
+        builder.startObject(0);
+    }
+    static endStruct_(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createStruct_(builder) {
+        Struct_.startStruct_(builder);
+        return Struct_.endStruct_(builder);
+    }
+}
+exports.Struct_ = Struct_;
+
+//# sourceMappingURL=struct_.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/struct_.js.map b/igv_component/node_modules/apache-arrow/fb/struct_.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..e16d34b0c59cb0be135213f87cce72e72a56399f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/struct_.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/struct_.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C;;;;GAIG;AACH,MAAa,OAAO;IAApB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,EAAyB,EAAE,GAAY;QAC7D,OAAO,CAAC,GAAG,IAAI,IAAI,OAAO,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACxF,CAAC;IAED,MAAM,CAAC,4BAA4B,CAAC,EAAyB,EAAE,GAAY;QACzE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,OAAO,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACxF,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B;QAC7C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B;QAC3C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B;QAC9C,OAAO,CAAC,YAAY,CAAC,OAAO,CAAC,CAAC;QAC9B,OAAO,OAAO,CAAC,UAAU,CAAC,OAAO,CAAC,CAAC;IACrC,CAAC;CACA;AA/BD,0BA+BC","file":"struct_.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/struct_.mjs b/igv_component/node_modules/apache-arrow/fb/struct_.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..d4512e7485b03d1aef5fe8ff66037e8127d6ac31
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/struct_.mjs
@@ -0,0 +1,38 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+/**
+ * A Struct_ in the flatbuffer metadata is the same as an Arrow Struct
+ * (according to the physical memory layout). We used Struct_ here as
+ * Struct is a reserved word in Flatbuffers
+ */
+export class Struct_ {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsStruct_(bb, obj) {
+        return (obj || new Struct_()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsStruct_(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Struct_()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startStruct_(builder) {
+        builder.startObject(0);
+    }
+    static endStruct_(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createStruct_(builder) {
+        Struct_.startStruct_(builder);
+        return Struct_.endStruct_(builder);
+    }
+}
+
+//# sourceMappingURL=struct_.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/struct_.mjs.map b/igv_component/node_modules/apache-arrow/fb/struct_.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..d2d12ae44d49ac2008100dc1087a0e1bd78b7ab0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/struct_.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/struct_.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;;GAIG;AACH,MAAM,OAAO,OAAO;IAApB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,EAAyB,EAAE,GAAY;QAC7D,OAAO,CAAC,GAAG,IAAI,IAAI,OAAO,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACxF,CAAC;IAED,MAAM,CAAC,4BAA4B,CAAC,EAAyB,EAAE,GAAY;QACzE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,OAAO,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACxF,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B;QAC7C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B;QAC3C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,OAA2B;QAC9C,OAAO,CAAC,YAAY,CAAC,OAAO,CAAC,CAAC;QAC9B,OAAO,OAAO,CAAC,UAAU,CAAC,OAAO,CAAC,CAAC;IACrC,CAAC;CACA","file":"struct_.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/tensor-dim.d.ts b/igv_component/node_modules/apache-arrow/fb/tensor-dim.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..61e04c8ffaa085c446c96d798d33d27fc4035373
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/tensor-dim.d.ts
@@ -0,0 +1,27 @@
+import * as flatbuffers from 'flatbuffers';
+/**
+ * ----------------------------------------------------------------------
+ * Data structures for dense tensors
+ * Shape data for a single axis in a tensor
+ */
+export declare class TensorDim {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): TensorDim;
+    static getRootAsTensorDim(bb: flatbuffers.ByteBuffer, obj?: TensorDim): TensorDim;
+    static getSizePrefixedRootAsTensorDim(bb: flatbuffers.ByteBuffer, obj?: TensorDim): TensorDim;
+    /**
+     * Length of dimension
+     */
+    size(): flatbuffers.Long;
+    /**
+     * Name of the dimension, optional
+     */
+    name(): string | null;
+    name(optionalEncoding: flatbuffers.Encoding): string | Uint8Array | null;
+    static startTensorDim(builder: flatbuffers.Builder): void;
+    static addSize(builder: flatbuffers.Builder, size: flatbuffers.Long): void;
+    static addName(builder: flatbuffers.Builder, nameOffset: flatbuffers.Offset): void;
+    static endTensorDim(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createTensorDim(builder: flatbuffers.Builder, size: flatbuffers.Long, nameOffset: flatbuffers.Offset): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/tensor-dim.d.ts.map b/igv_component/node_modules/apache-arrow/fb/tensor-dim.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..a170163648e6b83d61373d1e64d9802a254a2c22
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/tensor-dim.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/tensor-dim.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;;GAIG;AACH,qBAAa,SAAS;IACpB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,SAAS;IAMrD,MAAM,CAAC,kBAAkB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,SAAS,GAAE,SAAS;IAI9E,MAAM,CAAC,8BAA8B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,SAAS,GAAE,SAAS;IAK1F;;OAEG;IACH,IAAI,IAAG,WAAW,CAAC,IAAI;IAKvB;;OAEG;IACH,IAAI,IAAG,MAAM,GAAC,IAAI;IAClB,IAAI,CAAC,gBAAgB,EAAC,WAAW,CAAC,QAAQ,GAAE,MAAM,GAAC,UAAU,GAAC,IAAI;IAMlE,MAAM,CAAC,cAAc,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAIjD,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,WAAW,CAAC,IAAI;IAIjE,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,UAAU,EAAC,WAAW,CAAC,MAAM;IAIzE,MAAM,CAAC,YAAY,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKnE,MAAM,CAAC,eAAe,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,WAAW,CAAC,IAAI,EAAE,UAAU,EAAC,WAAW,CAAC,MAAM,GAAE,WAAW,CAAC,MAAM;CAM3H","file":"tensor-dim.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/tensor-dim.js b/igv_component/node_modules/apache-arrow/fb/tensor-dim.js
new file mode 100644
index 0000000000000000000000000000000000000000..46db34d710b48b417a6643c2fe352d3c2ae4b06b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/tensor-dim.js
@@ -0,0 +1,62 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.TensorDim = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+/**
+ * ----------------------------------------------------------------------
+ * Data structures for dense tensors
+ * Shape data for a single axis in a tensor
+ */
+class TensorDim {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsTensorDim(bb, obj) {
+        return (obj || new TensorDim()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsTensorDim(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new TensorDim()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * Length of dimension
+     */
+    size() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt64(this.bb_pos + offset) : this.bb.createLong(0, 0);
+    }
+    name(optionalEncoding) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__string(this.bb_pos + offset, optionalEncoding) : null;
+    }
+    static startTensorDim(builder) {
+        builder.startObject(2);
+    }
+    static addSize(builder, size) {
+        builder.addFieldInt64(0, size, builder.createLong(0, 0));
+    }
+    static addName(builder, nameOffset) {
+        builder.addFieldOffset(1, nameOffset, 0);
+    }
+    static endTensorDim(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createTensorDim(builder, size, nameOffset) {
+        TensorDim.startTensorDim(builder);
+        TensorDim.addSize(builder, size);
+        TensorDim.addName(builder, nameOffset);
+        return TensorDim.endTensorDim(builder);
+    }
+}
+exports.TensorDim = TensorDim;
+
+//# sourceMappingURL=tensor-dim.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/tensor-dim.js.map b/igv_component/node_modules/apache-arrow/fb/tensor-dim.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..fd5edfe1708058b93257b56a80ade9fec5e5cb99
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/tensor-dim.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/tensor-dim.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C;;;;GAIG;AACH,MAAa,SAAS;IAAtB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAyDb,CAAC;IAxDD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,EAAyB,EAAE,GAAc;QACjE,OAAO,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC1F,CAAC;IAED,MAAM,CAAC,8BAA8B,CAAC,EAAyB,EAAE,GAAc;QAC7E,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC1F,CAAC;IAED;;OAEG;IACH,IAAI;QACF,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;IACvF,CAAC;IAOD,IAAI,CAAC,gBAAqB;QACxB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,EAAE,gBAAgB,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACnF,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B;QAC/C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,IAAqB;QAC/D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,IAAI,EAAE,OAAO,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;IAC3D,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,UAA6B;QACvE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,UAAU,EAAE,CAAC,CAAC,CAAC;IAC3C,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B;QAC7C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,OAA2B,EAAE,IAAqB,EAAE,UAA6B;QACtG,SAAS,CAAC,cAAc,CAAC,OAAO,CAAC,CAAC;QAClC,SAAS,CAAC,OAAO,CAAC,OAAO,EAAE,IAAI,CAAC,CAAC;QACjC,SAAS,CAAC,OAAO,CAAC,OAAO,EAAE,UAAU,CAAC,CAAC;QACvC,OAAO,SAAS,CAAC,YAAY,CAAC,OAAO,CAAC,CAAC;IACzC,CAAC;CACA;AA3DD,8BA2DC","file":"tensor-dim.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/tensor-dim.mjs b/igv_component/node_modules/apache-arrow/fb/tensor-dim.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..078f53c91c5a9a8ab106b79e95f5cd6cc6a4c47e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/tensor-dim.mjs
@@ -0,0 +1,57 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+/**
+ * ----------------------------------------------------------------------
+ * Data structures for dense tensors
+ * Shape data for a single axis in a tensor
+ */
+export class TensorDim {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsTensorDim(bb, obj) {
+        return (obj || new TensorDim()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsTensorDim(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new TensorDim()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    /**
+     * Length of dimension
+     */
+    size() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt64(this.bb_pos + offset) : this.bb.createLong(0, 0);
+    }
+    name(optionalEncoding) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__string(this.bb_pos + offset, optionalEncoding) : null;
+    }
+    static startTensorDim(builder) {
+        builder.startObject(2);
+    }
+    static addSize(builder, size) {
+        builder.addFieldInt64(0, size, builder.createLong(0, 0));
+    }
+    static addName(builder, nameOffset) {
+        builder.addFieldOffset(1, nameOffset, 0);
+    }
+    static endTensorDim(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createTensorDim(builder, size, nameOffset) {
+        TensorDim.startTensorDim(builder);
+        TensorDim.addSize(builder, size);
+        TensorDim.addName(builder, nameOffset);
+        return TensorDim.endTensorDim(builder);
+    }
+}
+
+//# sourceMappingURL=tensor-dim.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/tensor-dim.mjs.map b/igv_component/node_modules/apache-arrow/fb/tensor-dim.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..a45d7f764b46a25d2d4a31dfec4a403bb42d6376
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/tensor-dim.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/tensor-dim.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;;;GAIG;AACH,MAAM,OAAO,SAAS;IAAtB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAyDb,CAAC;IAxDD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,EAAyB,EAAE,GAAc;QACjE,OAAO,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC1F,CAAC;IAED,MAAM,CAAC,8BAA8B,CAAC,EAAyB,EAAE,GAAc;QAC7E,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC1F,CAAC;IAED;;OAEG;IACH,IAAI;QACF,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;IACvF,CAAC;IAOD,IAAI,CAAC,gBAAqB;QACxB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,EAAE,gBAAgB,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACnF,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B;QAC/C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,IAAqB;QAC/D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,IAAI,EAAE,OAAO,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;IAC3D,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,UAA6B;QACvE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,UAAU,EAAE,CAAC,CAAC,CAAC;IAC3C,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B;QAC7C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,OAA2B,EAAE,IAAqB,EAAE,UAA6B;QACtG,SAAS,CAAC,cAAc,CAAC,OAAO,CAAC,CAAC;QAClC,SAAS,CAAC,OAAO,CAAC,OAAO,EAAE,IAAI,CAAC,CAAC;QACjC,SAAS,CAAC,OAAO,CAAC,OAAO,EAAE,UAAU,CAAC,CAAC;QACvC,OAAO,SAAS,CAAC,YAAY,CAAC,OAAO,CAAC,CAAC;IACzC,CAAC;CACA","file":"tensor-dim.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/tensor.d.ts b/igv_component/node_modules/apache-arrow/fb/tensor.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..3783e5b6650820204535a7d367975850d02ccc0d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/tensor.d.ts
@@ -0,0 +1,45 @@
+import * as flatbuffers from 'flatbuffers';
+import { Buffer } from './buffer.js';
+import { TensorDim } from './tensor-dim.js';
+import { Type } from './type.js';
+export declare class Tensor {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Tensor;
+    static getRootAsTensor(bb: flatbuffers.ByteBuffer, obj?: Tensor): Tensor;
+    static getSizePrefixedRootAsTensor(bb: flatbuffers.ByteBuffer, obj?: Tensor): Tensor;
+    typeType(): Type;
+    /**
+     * The type of data contained in a value cell. Currently only fixed-width
+     * value types are supported, no strings or nested types
+     */
+    type<T extends flatbuffers.Table>(obj: any): any | null;
+    /**
+     * The dimensions of the tensor, optionally named
+     */
+    shape(index: number, obj?: TensorDim): TensorDim | null;
+    shapeLength(): number;
+    /**
+     * Non-negative byte offsets to advance one value cell along each dimension
+     * If omitted, default to row-major order (C-like).
+     */
+    strides(index: number): flatbuffers.Long | null;
+    stridesLength(): number;
+    /**
+     * The location and size of the tensor's data
+     */
+    data(obj?: Buffer): Buffer | null;
+    static startTensor(builder: flatbuffers.Builder): void;
+    static addTypeType(builder: flatbuffers.Builder, typeType: Type): void;
+    static addType(builder: flatbuffers.Builder, typeOffset: flatbuffers.Offset): void;
+    static addShape(builder: flatbuffers.Builder, shapeOffset: flatbuffers.Offset): void;
+    static createShapeVector(builder: flatbuffers.Builder, data: flatbuffers.Offset[]): flatbuffers.Offset;
+    static startShapeVector(builder: flatbuffers.Builder, numElems: number): void;
+    static addStrides(builder: flatbuffers.Builder, stridesOffset: flatbuffers.Offset): void;
+    static createStridesVector(builder: flatbuffers.Builder, data: flatbuffers.Long[]): flatbuffers.Offset;
+    static startStridesVector(builder: flatbuffers.Builder, numElems: number): void;
+    static addData(builder: flatbuffers.Builder, dataOffset: flatbuffers.Offset): void;
+    static endTensor(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static finishTensorBuffer(builder: flatbuffers.Builder, offset: flatbuffers.Offset): void;
+    static finishSizePrefixedTensorBuffer(builder: flatbuffers.Builder, offset: flatbuffers.Offset): void;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/tensor.d.ts.map b/igv_component/node_modules/apache-arrow/fb/tensor.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..b5d1834b3a29c228985bf670763fb40da6c3bca9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/tensor.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/tensor.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AACrC,OAAO,EAAE,SAAS,EAAE,MAAM,iBAAiB,CAAC;AAC5C,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AAGjC,qBAAa,MAAM;IACjB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,MAAM;IAMlD,MAAM,CAAC,eAAe,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,MAAM,GAAE,MAAM;IAIrE,MAAM,CAAC,2BAA2B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,MAAM,GAAE,MAAM;IAKjF,QAAQ,IAAG,IAAI;IAKf;;;OAGG;IAEH,IAAI,CAAC,CAAC,SAAS,WAAW,CAAC,KAAK,EAAE,GAAG,EAAC,GAAG,GAAE,GAAG,GAAC,IAAI;IAKnD;;OAEG;IACH,KAAK,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,CAAC,EAAC,SAAS,GAAE,SAAS,GAAC,IAAI;IAKnD,WAAW,IAAG,MAAM;IAKpB;;;OAGG;IACH,OAAO,CAAC,KAAK,EAAE,MAAM,GAAE,WAAW,CAAC,IAAI,GAAC,IAAI;IAK5C,aAAa,IAAG,MAAM;IAKtB;;OAEG;IACH,IAAI,CAAC,GAAG,CAAC,EAAC,MAAM,GAAE,MAAM,GAAC,IAAI;IAK7B,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI9C,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,IAAI;IAI7D,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,UAAU,EAAC,WAAW,CAAC,MAAM;IAIzE,MAAM,CAAC,QAAQ,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,WAAW,EAAC,WAAW,CAAC,MAAM;IAI3E,MAAM,CAAC,iBAAiB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,WAAW,CAAC,MAAM,EAAE,GAAE,WAAW,CAAC,MAAM;IAQnG,MAAM,CAAC,gBAAgB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAIpE,MAAM,CAAC,UAAU,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,aAAa,EAAC,WAAW,CAAC,MAAM;IAI/E,MAAM,CAAC,mBAAmB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,WAAW,CAAC,IAAI,EAAE,GAAE,WAAW,CAAC,MAAM;IAQnG,MAAM,CAAC,kBAAkB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAItE,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,UAAU,EAAC,WAAW,CAAC,MAAM;IAIzE,MAAM,CAAC,SAAS,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAQhE,MAAM,CAAC,kBAAkB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,MAAM,EAAC,WAAW,CAAC,MAAM;IAIhF,MAAM,CAAC,8BAA8B,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,MAAM,EAAC,WAAW,CAAC,MAAM;CAI3F","file":"tensor.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/tensor.js b/igv_component/node_modules/apache-arrow/fb/tensor.js
new file mode 100644
index 0000000000000000000000000000000000000000..0e866e7ff0cd18ba8b5b48ead13c6271e5db5a9e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/tensor.js
@@ -0,0 +1,124 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Tensor = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const buffer_js_1 = require("./buffer.js");
+const tensor_dim_js_1 = require("./tensor-dim.js");
+const type_js_1 = require("./type.js");
+class Tensor {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsTensor(bb, obj) {
+        return (obj || new Tensor()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsTensor(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Tensor()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    typeType() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readUint8(this.bb_pos + offset) : type_js_1.Type.NONE;
+    }
+    /**
+     * The type of data contained in a value cell. Currently only fixed-width
+     * value types are supported, no strings or nested types
+     */
+    // @ts-ignore
+    type(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__union(obj, this.bb_pos + offset) : null;
+    }
+    /**
+     * The dimensions of the tensor, optionally named
+     */
+    shape(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? (obj || new tensor_dim_js_1.TensorDim()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
+    }
+    shapeLength() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * Non-negative byte offsets to advance one value cell along each dimension
+     * If omitted, default to row-major order (C-like).
+     */
+    strides(index) {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.readInt64(this.bb.__vector(this.bb_pos + offset) + index * 8) : this.bb.createLong(0, 0);
+    }
+    stridesLength() {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * The location and size of the tensor's data
+     */
+    data(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? (obj || new buffer_js_1.Buffer()).__init(this.bb_pos + offset, this.bb) : null;
+    }
+    static startTensor(builder) {
+        builder.startObject(5);
+    }
+    static addTypeType(builder, typeType) {
+        builder.addFieldInt8(0, typeType, type_js_1.Type.NONE);
+    }
+    static addType(builder, typeOffset) {
+        builder.addFieldOffset(1, typeOffset, 0);
+    }
+    static addShape(builder, shapeOffset) {
+        builder.addFieldOffset(2, shapeOffset, 0);
+    }
+    static createShapeVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addOffset(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startShapeVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static addStrides(builder, stridesOffset) {
+        builder.addFieldOffset(3, stridesOffset, 0);
+    }
+    static createStridesVector(builder, data) {
+        builder.startVector(8, data.length, 8);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addInt64(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startStridesVector(builder, numElems) {
+        builder.startVector(8, numElems, 8);
+    }
+    static addData(builder, dataOffset) {
+        builder.addFieldStruct(4, dataOffset, 0);
+    }
+    static endTensor(builder) {
+        const offset = builder.endObject();
+        builder.requiredField(offset, 6); // type
+        builder.requiredField(offset, 8); // shape
+        builder.requiredField(offset, 12); // data
+        return offset;
+    }
+    static finishTensorBuffer(builder, offset) {
+        builder.finish(offset);
+    }
+    static finishSizePrefixedTensorBuffer(builder, offset) {
+        builder.finish(offset, undefined, true);
+    }
+}
+exports.Tensor = Tensor;
+
+//# sourceMappingURL=tensor.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/tensor.js.map b/igv_component/node_modules/apache-arrow/fb/tensor.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..4733a3c7d4b9d5c795ed840a60ba0ddc06cb0782
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/tensor.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/tensor.mjs b/igv_component/node_modules/apache-arrow/fb/tensor.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..d6ed40d3a0ce691df070e91f3cbf92e5e8156bec
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/tensor.mjs
@@ -0,0 +1,119 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { Buffer } from './buffer.mjs';
+import { TensorDim } from './tensor-dim.mjs';
+import { Type } from './type.mjs';
+export class Tensor {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsTensor(bb, obj) {
+        return (obj || new Tensor()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsTensor(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Tensor()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    typeType() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readUint8(this.bb_pos + offset) : Type.NONE;
+    }
+    /**
+     * The type of data contained in a value cell. Currently only fixed-width
+     * value types are supported, no strings or nested types
+     */
+    // @ts-ignore
+    type(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__union(obj, this.bb_pos + offset) : null;
+    }
+    /**
+     * The dimensions of the tensor, optionally named
+     */
+    shape(index, obj) {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? (obj || new TensorDim()).__init(this.bb.__indirect(this.bb.__vector(this.bb_pos + offset) + index * 4), this.bb) : null;
+    }
+    shapeLength() {
+        const offset = this.bb.__offset(this.bb_pos, 8);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * Non-negative byte offsets to advance one value cell along each dimension
+     * If omitted, default to row-major order (C-like).
+     */
+    strides(index) {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.readInt64(this.bb.__vector(this.bb_pos + offset) + index * 8) : this.bb.createLong(0, 0);
+    }
+    stridesLength() {
+        const offset = this.bb.__offset(this.bb_pos, 10);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    /**
+     * The location and size of the tensor's data
+     */
+    data(obj) {
+        const offset = this.bb.__offset(this.bb_pos, 12);
+        return offset ? (obj || new Buffer()).__init(this.bb_pos + offset, this.bb) : null;
+    }
+    static startTensor(builder) {
+        builder.startObject(5);
+    }
+    static addTypeType(builder, typeType) {
+        builder.addFieldInt8(0, typeType, Type.NONE);
+    }
+    static addType(builder, typeOffset) {
+        builder.addFieldOffset(1, typeOffset, 0);
+    }
+    static addShape(builder, shapeOffset) {
+        builder.addFieldOffset(2, shapeOffset, 0);
+    }
+    static createShapeVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addOffset(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startShapeVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static addStrides(builder, stridesOffset) {
+        builder.addFieldOffset(3, stridesOffset, 0);
+    }
+    static createStridesVector(builder, data) {
+        builder.startVector(8, data.length, 8);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addInt64(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startStridesVector(builder, numElems) {
+        builder.startVector(8, numElems, 8);
+    }
+    static addData(builder, dataOffset) {
+        builder.addFieldStruct(4, dataOffset, 0);
+    }
+    static endTensor(builder) {
+        const offset = builder.endObject();
+        builder.requiredField(offset, 6); // type
+        builder.requiredField(offset, 8); // shape
+        builder.requiredField(offset, 12); // data
+        return offset;
+    }
+    static finishTensorBuffer(builder, offset) {
+        builder.finish(offset);
+    }
+    static finishSizePrefixedTensorBuffer(builder, offset) {
+        builder.finish(offset, undefined, true);
+    }
+}
+
+//# sourceMappingURL=tensor.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/tensor.mjs.map b/igv_component/node_modules/apache-arrow/fb/tensor.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..6b47325fe7d31c05ea25d77667344c4ee42f1802
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/tensor.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/tensor.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AACrC,OAAO,EAAE,SAAS,EAAE,MAAM,iBAAiB,CAAC;AAC5C,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AAGjC,MAAM,OAAO,MAAM;IAAnB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAkIb,CAAC;IAjID,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,EAAyB,EAAE,GAAW;QAC3D,OAAO,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACvF,CAAC;IAED,MAAM,CAAC,2BAA2B,CAAC,EAAyB,EAAE,GAAW;QACvE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACvF,CAAC;IAED,QAAQ;QACN,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,IAAI,CAAC;IACvE,CAAC;IAED;;;OAGG;IACH,aAAa;IACb,IAAI,CAA8B,GAAO;QACvC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,OAAO,CAAC,GAAG,EAAE,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACrE,CAAC;IAED;;OAEG;IACH,KAAK,CAAC,KAAa,EAAE,GAAc;QACjC,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,CAAC,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IAC7I,CAAC;IAED,WAAW;QACT,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED;;;OAGG;IACH,OAAO,CAAC,KAAa;QACnB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,UAAU,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;IACtH,CAAC;IAED,aAAa;QACX,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED;;OAEG;IACH,IAAI,CAAC,GAAW;QACd,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,CAAC;QAClD,OAAO,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,IAAI,MAAM,EAAE,CAAC,CAAC,MAAM,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,EAAE,IAAI,CAAC,EAAG,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACtF,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B;QAC5C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,QAAa;QAC3D,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,QAAQ,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;IAC/C,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,UAA6B;QACvE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,UAAU,EAAE,CAAC,CAAC,CAAC;IAC3C,CAAC;IAED,MAAM,CAAC,QAAQ,CAAC,OAA2B,EAAE,WAA8B;QACzE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,WAAW,EAAE,CAAC,CAAC,CAAC;IAC5C,CAAC;IAED,MAAM,CAAC,iBAAiB,CAAC,OAA2B,EAAE,IAAyB;QAC7E,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACvC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACzC,OAAO,CAAC,SAAS,CAAC,IAAI,CAAC,CAAC,CAAE,CAAC,CAAC;SAC7B;QACD,OAAO,OAAO,CAAC,SAAS,EAAE,CAAC;IAC7B,CAAC;IAED,MAAM,CAAC,gBAAgB,CAAC,OAA2B,EAAE,QAAe;QAClE,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACtC,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B,EAAE,aAAgC;QAC7E,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,aAAa,EAAE,CAAC,CAAC,CAAC;IAC9C,CAAC;IAED,MAAM,CAAC,mBAAmB,CAAC,OAA2B,EAAE,IAAuB;QAC7E,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACvC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACzC,OAAO,CAAC,QAAQ,CAAC,IAAI,CAAC,CAAC,CAAE,CAAC,CAAC;SAC5B;QACD,OAAO,OAAO,CAAC,SAAS,EAAE,CAAC;IAC7B,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B,EAAE,QAAe;QACpE,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACtC,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,UAA6B;QACvE,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,UAAU,EAAE,CAAC,CAAC,CAAC;IAC3C,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,CAAC,aAAa,CAAC,MAAM,EAAE,CAAC,CAAC,CAAA,CAAC,OAAO;QACxC,OAAO,CAAC,aAAa,CAAC,MAAM,EAAE,CAAC,CAAC,CAAA,CAAC,QAAQ;QACzC,OAAO,CAAC,aAAa,CAAC,MAAM,EAAE,EAAE,CAAC,CAAA,CAAC,OAAO;QACzC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B,EAAE,MAAyB;QAC9E,OAAO,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,8BAA8B,CAAC,OAA2B,EAAE,MAAyB;QAC1F,OAAO,CAAC,MAAM,CAAC,MAAM,EAAE,SAAS,EAAE,IAAI,CAAC,CAAC;IAC1C,CAAC;CAEA","file":"tensor.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/time-unit.d.ts b/igv_component/node_modules/apache-arrow/fb/time-unit.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..37d13e59dbcd5ef7f8a6a58ad1b9710341d88572
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/time-unit.d.ts
@@ -0,0 +1,6 @@
+export declare enum TimeUnit {
+    SECOND = 0,
+    MILLISECOND = 1,
+    MICROSECOND = 2,
+    NANOSECOND = 3
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/time-unit.d.ts.map b/igv_component/node_modules/apache-arrow/fb/time-unit.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..e8cf5eabe4b1213b82b6fabb27ad15333cbc4600
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/time-unit.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/time-unit.ts"],"names":[],"mappings":"AAEA,oBAAY,QAAQ;IAClB,MAAM,IAAI;IACV,WAAW,IAAI;IACf,WAAW,IAAI;IACf,UAAU,IAAI;CACf","file":"time-unit.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/time-unit.js b/igv_component/node_modules/apache-arrow/fb/time-unit.js
new file mode 100644
index 0000000000000000000000000000000000000000..4bf8ac8e156ef96a9ef6197cdb8c117681481d1d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/time-unit.js
@@ -0,0 +1,13 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.TimeUnit = void 0;
+var TimeUnit;
+(function (TimeUnit) {
+    TimeUnit[TimeUnit["SECOND"] = 0] = "SECOND";
+    TimeUnit[TimeUnit["MILLISECOND"] = 1] = "MILLISECOND";
+    TimeUnit[TimeUnit["MICROSECOND"] = 2] = "MICROSECOND";
+    TimeUnit[TimeUnit["NANOSECOND"] = 3] = "NANOSECOND";
+})(TimeUnit = exports.TimeUnit || (exports.TimeUnit = {}));
+
+//# sourceMappingURL=time-unit.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/time-unit.js.map b/igv_component/node_modules/apache-arrow/fb/time-unit.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..48e00edb150bc841a4488645ee4b31c47b40b33e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/time-unit.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/time-unit.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAErE,IAAY,QAKX;AALD,WAAY,QAAQ;IAClB,2CAAU,CAAA;IACV,qDAAe,CAAA;IACf,qDAAe,CAAA;IACf,mDAAc,CAAA;AAChB,CAAC,EALW,QAAQ,GAAR,gBAAQ,KAAR,gBAAQ,QAKnB","file":"time-unit.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/time-unit.mjs b/igv_component/node_modules/apache-arrow/fb/time-unit.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..0eee14378ae59171833879347679fd262c7c7dba
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/time-unit.mjs
@@ -0,0 +1,10 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+export var TimeUnit;
+(function (TimeUnit) {
+    TimeUnit[TimeUnit["SECOND"] = 0] = "SECOND";
+    TimeUnit[TimeUnit["MILLISECOND"] = 1] = "MILLISECOND";
+    TimeUnit[TimeUnit["MICROSECOND"] = 2] = "MICROSECOND";
+    TimeUnit[TimeUnit["NANOSECOND"] = 3] = "NANOSECOND";
+})(TimeUnit || (TimeUnit = {}));
+
+//# sourceMappingURL=time-unit.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/time-unit.mjs.map b/igv_component/node_modules/apache-arrow/fb/time-unit.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..40d5bd7d4aa8fb79edbf5ec55f304d9a0e538516
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/time-unit.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/time-unit.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,MAAM,CAAN,IAAY,QAKX;AALD,WAAY,QAAQ;IAClB,2CAAU,CAAA;IACV,qDAAe,CAAA;IACf,qDAAe,CAAA;IACf,mDAAc,CAAA;AAChB,CAAC,EALW,QAAQ,KAAR,QAAQ,QAKnB","file":"time-unit.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/time.d.ts b/igv_component/node_modules/apache-arrow/fb/time.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..14adb09be658ac6b11dba853d1581783a6d32524
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/time.d.ts
@@ -0,0 +1,32 @@
+import * as flatbuffers from 'flatbuffers';
+import { TimeUnit } from './time-unit.js';
+/**
+ * Time is either a 32-bit or 64-bit signed integer type representing an
+ * elapsed time since midnight, stored in either of four units: seconds,
+ * milliseconds, microseconds or nanoseconds.
+ *
+ * The integer `bitWidth` depends on the `unit` and must be one of the following:
+ * * SECOND and MILLISECOND: 32 bits
+ * * MICROSECOND and NANOSECOND: 64 bits
+ *
+ * The allowed values are between 0 (inclusive) and 86400 (=24*60*60) seconds
+ * (exclusive), adjusted for the time unit (for example, up to 86400000
+ * exclusive for the MILLISECOND unit).
+ * This definition doesn't allow for leap seconds. Time values from
+ * measurements with leap seconds will need to be corrected when ingesting
+ * into Arrow (for example by replacing the value 86400 with 86399).
+ */
+export declare class Time {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Time;
+    static getRootAsTime(bb: flatbuffers.ByteBuffer, obj?: Time): Time;
+    static getSizePrefixedRootAsTime(bb: flatbuffers.ByteBuffer, obj?: Time): Time;
+    unit(): TimeUnit;
+    bitWidth(): number;
+    static startTime(builder: flatbuffers.Builder): void;
+    static addUnit(builder: flatbuffers.Builder, unit: TimeUnit): void;
+    static addBitWidth(builder: flatbuffers.Builder, bitWidth: number): void;
+    static endTime(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createTime(builder: flatbuffers.Builder, unit: TimeUnit, bitWidth: number): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/time.d.ts.map b/igv_component/node_modules/apache-arrow/fb/time.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..2afcd756c86963720f3ae54107dbe4c60a2d09e1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/time.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/time.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,QAAQ,EAAE,MAAM,gBAAgB,CAAC;AAG1C;;;;;;;;;;;;;;;GAeG;AACH,qBAAa,IAAI;IACf,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,IAAI;IAMhD,MAAM,CAAC,aAAa,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,IAAI,GAAE,IAAI;IAI/D,MAAM,CAAC,yBAAyB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,IAAI,GAAE,IAAI;IAK3E,IAAI,IAAG,QAAQ;IAKf,QAAQ,IAAG,MAAM;IAKjB,MAAM,CAAC,SAAS,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI5C,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,QAAQ;IAIzD,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAI/D,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAK9D,MAAM,CAAC,UAAU,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,QAAQ,EAAE,QAAQ,EAAC,MAAM,GAAE,WAAW,CAAC,MAAM;CAMhG","file":"time.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/time.js b/igv_component/node_modules/apache-arrow/fb/time.js
new file mode 100644
index 0000000000000000000000000000000000000000..d6036811f9ef569f05d53c1e678eee7b1da4d446
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/time.js
@@ -0,0 +1,71 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Time = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const time_unit_js_1 = require("./time-unit.js");
+/**
+ * Time is either a 32-bit or 64-bit signed integer type representing an
+ * elapsed time since midnight, stored in either of four units: seconds,
+ * milliseconds, microseconds or nanoseconds.
+ *
+ * The integer `bitWidth` depends on the `unit` and must be one of the following:
+ * * SECOND and MILLISECOND: 32 bits
+ * * MICROSECOND and NANOSECOND: 64 bits
+ *
+ * The allowed values are between 0 (inclusive) and 86400 (=24*60*60) seconds
+ * (exclusive), adjusted for the time unit (for example, up to 86400000
+ * exclusive for the MILLISECOND unit).
+ * This definition doesn't allow for leap seconds. Time values from
+ * measurements with leap seconds will need to be corrected when ingesting
+ * into Arrow (for example by replacing the value 86400 with 86399).
+ */
+class Time {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsTime(bb, obj) {
+        return (obj || new Time()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsTime(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Time()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    unit() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : time_unit_js_1.TimeUnit.MILLISECOND;
+    }
+    bitWidth() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.readInt32(this.bb_pos + offset) : 32;
+    }
+    static startTime(builder) {
+        builder.startObject(2);
+    }
+    static addUnit(builder, unit) {
+        builder.addFieldInt16(0, unit, time_unit_js_1.TimeUnit.MILLISECOND);
+    }
+    static addBitWidth(builder, bitWidth) {
+        builder.addFieldInt32(1, bitWidth, 32);
+    }
+    static endTime(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createTime(builder, unit, bitWidth) {
+        Time.startTime(builder);
+        Time.addUnit(builder, unit);
+        Time.addBitWidth(builder, bitWidth);
+        return Time.endTime(builder);
+    }
+}
+exports.Time = Time;
+
+//# sourceMappingURL=time.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/time.js.map b/igv_component/node_modules/apache-arrow/fb/time.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..1b4e050cceec3ce45d7d1323232e76babb844962
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/time.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/time.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,iDAA0C;AAG1C;;;;;;;;;;;;;;;GAeG;AACH,MAAa,IAAI;IAAjB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAiDb,CAAC;IAhDD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,EAAyB,EAAE,GAAS;QACvD,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,EAAyB,EAAE,GAAS;QACnE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,IAAI;QACF,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,uBAAQ,CAAC,WAAW,CAAC;IAClF,CAAC;IAED,QAAQ;QACN,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,EAAE,CAAC;IAChE,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,IAAa;QACvD,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,IAAI,EAAE,uBAAQ,CAAC,WAAW,CAAC,CAAC;IACvD,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,QAAe;QAC7D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,QAAQ,EAAE,EAAE,CAAC,CAAC;IACzC,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B;QACxC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B,EAAE,IAAa,EAAE,QAAe;QAC3E,IAAI,CAAC,SAAS,CAAC,OAAO,CAAC,CAAC;QACxB,IAAI,CAAC,OAAO,CAAC,OAAO,EAAE,IAAI,CAAC,CAAC;QAC5B,IAAI,CAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,CAAC,CAAC;QACpC,OAAO,IAAI,CAAC,OAAO,CAAC,OAAO,CAAC,CAAC;IAC/B,CAAC;CACA;AAnDD,oBAmDC","file":"time.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/time.mjs b/igv_component/node_modules/apache-arrow/fb/time.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..aeebe093386c91062e08ffb614b66078d029fcb8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/time.mjs
@@ -0,0 +1,66 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { TimeUnit } from './time-unit.mjs';
+/**
+ * Time is either a 32-bit or 64-bit signed integer type representing an
+ * elapsed time since midnight, stored in either of four units: seconds,
+ * milliseconds, microseconds or nanoseconds.
+ *
+ * The integer `bitWidth` depends on the `unit` and must be one of the following:
+ * * SECOND and MILLISECOND: 32 bits
+ * * MICROSECOND and NANOSECOND: 64 bits
+ *
+ * The allowed values are between 0 (inclusive) and 86400 (=24*60*60) seconds
+ * (exclusive), adjusted for the time unit (for example, up to 86400000
+ * exclusive for the MILLISECOND unit).
+ * This definition doesn't allow for leap seconds. Time values from
+ * measurements with leap seconds will need to be corrected when ingesting
+ * into Arrow (for example by replacing the value 86400 with 86399).
+ */
+export class Time {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsTime(bb, obj) {
+        return (obj || new Time()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsTime(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Time()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    unit() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : TimeUnit.MILLISECOND;
+    }
+    bitWidth() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.readInt32(this.bb_pos + offset) : 32;
+    }
+    static startTime(builder) {
+        builder.startObject(2);
+    }
+    static addUnit(builder, unit) {
+        builder.addFieldInt16(0, unit, TimeUnit.MILLISECOND);
+    }
+    static addBitWidth(builder, bitWidth) {
+        builder.addFieldInt32(1, bitWidth, 32);
+    }
+    static endTime(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createTime(builder, unit, bitWidth) {
+        Time.startTime(builder);
+        Time.addUnit(builder, unit);
+        Time.addBitWidth(builder, bitWidth);
+        return Time.endTime(builder);
+    }
+}
+
+//# sourceMappingURL=time.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/time.mjs.map b/igv_component/node_modules/apache-arrow/fb/time.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..e3f56f35b4fc267506e08147280c9d36f776596b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/time.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/time.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,QAAQ,EAAE,MAAM,gBAAgB,CAAC;AAG1C;;;;;;;;;;;;;;;GAeG;AACH,MAAM,OAAO,IAAI;IAAjB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IAiDb,CAAC;IAhDD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,EAAyB,EAAE,GAAS;QACvD,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,EAAyB,EAAE,GAAS;QACnE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,IAAI;QACF,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,QAAQ,CAAC,WAAW,CAAC;IAClF,CAAC;IAED,QAAQ;QACN,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,EAAE,CAAC;IAChE,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,IAAa;QACvD,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,IAAI,EAAE,QAAQ,CAAC,WAAW,CAAC,CAAC;IACvD,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,QAAe;QAC7D,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,QAAQ,EAAE,EAAE,CAAC,CAAC;IACzC,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B;QACxC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B,EAAE,IAAa,EAAE,QAAe;QAC3E,IAAI,CAAC,SAAS,CAAC,OAAO,CAAC,CAAC;QACxB,IAAI,CAAC,OAAO,CAAC,OAAO,EAAE,IAAI,CAAC,CAAC;QAC5B,IAAI,CAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,CAAC,CAAC;QACpC,OAAO,IAAI,CAAC,OAAO,CAAC,OAAO,CAAC,CAAC;IAC/B,CAAC;CACA","file":"time.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/timestamp.d.ts b/igv_component/node_modules/apache-arrow/fb/timestamp.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..3eb56cd1cac03251a6ac8418a076eae6f6d303b8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/timestamp.d.ts
@@ -0,0 +1,136 @@
+import * as flatbuffers from 'flatbuffers';
+import { TimeUnit } from './time-unit.js';
+/**
+ * Timestamp is a 64-bit signed integer representing an elapsed time since a
+ * fixed epoch, stored in either of four units: seconds, milliseconds,
+ * microseconds or nanoseconds, and is optionally annotated with a timezone.
+ *
+ * Timestamp values do not include any leap seconds (in other words, all
+ * days are considered 86400 seconds long).
+ *
+ * Timestamps with a non-empty timezone
+ * ------------------------------------
+ *
+ * If a Timestamp column has a non-empty timezone value, its epoch is
+ * 1970-01-01 00:00:00 (January 1st 1970, midnight) in the *UTC* timezone
+ * (the Unix epoch), regardless of the Timestamp's own timezone.
+ *
+ * Therefore, timestamp values with a non-empty timezone correspond to
+ * physical points in time together with some additional information about
+ * how the data was obtained and/or how to display it (the timezone).
+ *
+ *   For example, the timestamp value 0 with the timezone string "Europe/Paris"
+ *   corresponds to "January 1st 1970, 00h00" in the UTC timezone, but the
+ *   application may prefer to display it as "January 1st 1970, 01h00" in
+ *   the Europe/Paris timezone (which is the same physical point in time).
+ *
+ * One consequence is that timestamp values with a non-empty timezone
+ * can be compared and ordered directly, since they all share the same
+ * well-known point of reference (the Unix epoch).
+ *
+ * Timestamps with an unset / empty timezone
+ * -----------------------------------------
+ *
+ * If a Timestamp column has no timezone value, its epoch is
+ * 1970-01-01 00:00:00 (January 1st 1970, midnight) in an *unknown* timezone.
+ *
+ * Therefore, timestamp values without a timezone cannot be meaningfully
+ * interpreted as physical points in time, but only as calendar / clock
+ * indications ("wall clock time") in an unspecified timezone.
+ *
+ *   For example, the timestamp value 0 with an empty timezone string
+ *   corresponds to "January 1st 1970, 00h00" in an unknown timezone: there
+ *   is not enough information to interpret it as a well-defined physical
+ *   point in time.
+ *
+ * One consequence is that timestamp values without a timezone cannot
+ * be reliably compared or ordered, since they may have different points of
+ * reference.  In particular, it is *not* possible to interpret an unset
+ * or empty timezone as the same as "UTC".
+ *
+ * Conversion between timezones
+ * ----------------------------
+ *
+ * If a Timestamp column has a non-empty timezone, changing the timezone
+ * to a different non-empty value is a metadata-only operation:
+ * the timestamp values need not change as their point of reference remains
+ * the same (the Unix epoch).
+ *
+ * However, if a Timestamp column has no timezone value, changing it to a
+ * non-empty value requires to think about the desired semantics.
+ * One possibility is to assume that the original timestamp values are
+ * relative to the epoch of the timezone being set; timestamp values should
+ * then adjusted to the Unix epoch (for example, changing the timezone from
+ * empty to "Europe/Paris" would require converting the timestamp values
+ * from "Europe/Paris" to "UTC", which seems counter-intuitive but is
+ * nevertheless correct).
+ *
+ * Guidelines for encoding data from external libraries
+ * ----------------------------------------------------
+ *
+ * Date & time libraries often have multiple different data types for temporal
+ * data. In order to ease interoperability between different implementations the
+ * Arrow project has some recommendations for encoding these types into a Timestamp
+ * column.
+ *
+ * An "instant" represents a physical point in time that has no relevant timezone
+ * (for example, astronomical data). To encode an instant, use a Timestamp with
+ * the timezone string set to "UTC", and make sure the Timestamp values
+ * are relative to the UTC epoch (January 1st 1970, midnight).
+ *
+ * A "zoned date-time" represents a physical point in time annotated with an
+ * informative timezone (for example, the timezone in which the data was
+ * recorded).  To encode a zoned date-time, use a Timestamp with the timezone
+ * string set to the name of the timezone, and make sure the Timestamp values
+ * are relative to the UTC epoch (January 1st 1970, midnight).
+ *
+ *  (There is some ambiguity between an instant and a zoned date-time with the
+ *   UTC timezone.  Both of these are stored the same in Arrow.  Typically,
+ *   this distinction does not matter.  If it does, then an application should
+ *   use custom metadata or an extension type to distinguish between the two cases.)
+ *
+ * An "offset date-time" represents a physical point in time combined with an
+ * explicit offset from UTC.  To encode an offset date-time, use a Timestamp
+ * with the timezone string set to the numeric timezone offset string
+ * (e.g. "+03:00"), and make sure the Timestamp values are relative to
+ * the UTC epoch (January 1st 1970, midnight).
+ *
+ * A "naive date-time" (also called "local date-time" in some libraries)
+ * represents a wall clock time combined with a calendar date, but with
+ * no indication of how to map this information to a physical point in time.
+ * Naive date-times must be handled with care because of this missing
+ * information, and also because daylight saving time (DST) may make
+ * some values ambiguous or non-existent. A naive date-time may be
+ * stored as a struct with Date and Time fields. However, it may also be
+ * encoded into a Timestamp column with an empty timezone. The timestamp
+ * values should be computed "as if" the timezone of the date-time values
+ * was UTC; for example, the naive date-time "January 1st 1970, 00h00" would
+ * be encoded as timestamp value 0.
+ */
+export declare class Timestamp {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Timestamp;
+    static getRootAsTimestamp(bb: flatbuffers.ByteBuffer, obj?: Timestamp): Timestamp;
+    static getSizePrefixedRootAsTimestamp(bb: flatbuffers.ByteBuffer, obj?: Timestamp): Timestamp;
+    unit(): TimeUnit;
+    /**
+     * The timezone is an optional string indicating the name of a timezone,
+     * one of:
+     *
+     * * As used in the Olson timezone database (the "tz database" or
+     *   "tzdata"), such as "America/New_York".
+     * * An absolute timezone offset of the form "+XX:XX" or "-XX:XX",
+     *   such as "+07:30".
+     *
+     * Whether a timezone string is present indicates different semantics about
+     * the data (see above).
+     */
+    timezone(): string | null;
+    timezone(optionalEncoding: flatbuffers.Encoding): string | Uint8Array | null;
+    static startTimestamp(builder: flatbuffers.Builder): void;
+    static addUnit(builder: flatbuffers.Builder, unit: TimeUnit): void;
+    static addTimezone(builder: flatbuffers.Builder, timezoneOffset: flatbuffers.Offset): void;
+    static endTimestamp(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createTimestamp(builder: flatbuffers.Builder, unit: TimeUnit, timezoneOffset: flatbuffers.Offset): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/timestamp.d.ts.map b/igv_component/node_modules/apache-arrow/fb/timestamp.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..a2d517ab9e5bceb7ce4e83b87c68b91cd559bd2d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/timestamp.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/timestamp.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,QAAQ,EAAE,MAAM,gBAAgB,CAAC;AAG1C;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;GA0GG;AACH,qBAAa,SAAS;IACpB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,SAAS;IAMrD,MAAM,CAAC,kBAAkB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,SAAS,GAAE,SAAS;IAI9E,MAAM,CAAC,8BAA8B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,SAAS,GAAE,SAAS;IAK1F,IAAI,IAAG,QAAQ;IAKf;;;;;;;;;;;OAWG;IACH,QAAQ,IAAG,MAAM,GAAC,IAAI;IACtB,QAAQ,CAAC,gBAAgB,EAAC,WAAW,CAAC,QAAQ,GAAE,MAAM,GAAC,UAAU,GAAC,IAAI;IAMtE,MAAM,CAAC,cAAc,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAIjD,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,QAAQ;IAIzD,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,cAAc,EAAC,WAAW,CAAC,MAAM;IAIjF,MAAM,CAAC,YAAY,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAKnE,MAAM,CAAC,eAAe,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,QAAQ,EAAE,cAAc,EAAC,WAAW,CAAC,MAAM,GAAE,WAAW,CAAC,MAAM;CAMvH","file":"timestamp.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/timestamp.js b/igv_component/node_modules/apache-arrow/fb/timestamp.js
new file mode 100644
index 0000000000000000000000000000000000000000..20f1a76adde608919d749180f18c2b39dd45bf73
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/timestamp.js
@@ -0,0 +1,162 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Timestamp = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const time_unit_js_1 = require("./time-unit.js");
+/**
+ * Timestamp is a 64-bit signed integer representing an elapsed time since a
+ * fixed epoch, stored in either of four units: seconds, milliseconds,
+ * microseconds or nanoseconds, and is optionally annotated with a timezone.
+ *
+ * Timestamp values do not include any leap seconds (in other words, all
+ * days are considered 86400 seconds long).
+ *
+ * Timestamps with a non-empty timezone
+ * ------------------------------------
+ *
+ * If a Timestamp column has a non-empty timezone value, its epoch is
+ * 1970-01-01 00:00:00 (January 1st 1970, midnight) in the *UTC* timezone
+ * (the Unix epoch), regardless of the Timestamp's own timezone.
+ *
+ * Therefore, timestamp values with a non-empty timezone correspond to
+ * physical points in time together with some additional information about
+ * how the data was obtained and/or how to display it (the timezone).
+ *
+ *   For example, the timestamp value 0 with the timezone string "Europe/Paris"
+ *   corresponds to "January 1st 1970, 00h00" in the UTC timezone, but the
+ *   application may prefer to display it as "January 1st 1970, 01h00" in
+ *   the Europe/Paris timezone (which is the same physical point in time).
+ *
+ * One consequence is that timestamp values with a non-empty timezone
+ * can be compared and ordered directly, since they all share the same
+ * well-known point of reference (the Unix epoch).
+ *
+ * Timestamps with an unset / empty timezone
+ * -----------------------------------------
+ *
+ * If a Timestamp column has no timezone value, its epoch is
+ * 1970-01-01 00:00:00 (January 1st 1970, midnight) in an *unknown* timezone.
+ *
+ * Therefore, timestamp values without a timezone cannot be meaningfully
+ * interpreted as physical points in time, but only as calendar / clock
+ * indications ("wall clock time") in an unspecified timezone.
+ *
+ *   For example, the timestamp value 0 with an empty timezone string
+ *   corresponds to "January 1st 1970, 00h00" in an unknown timezone: there
+ *   is not enough information to interpret it as a well-defined physical
+ *   point in time.
+ *
+ * One consequence is that timestamp values without a timezone cannot
+ * be reliably compared or ordered, since they may have different points of
+ * reference.  In particular, it is *not* possible to interpret an unset
+ * or empty timezone as the same as "UTC".
+ *
+ * Conversion between timezones
+ * ----------------------------
+ *
+ * If a Timestamp column has a non-empty timezone, changing the timezone
+ * to a different non-empty value is a metadata-only operation:
+ * the timestamp values need not change as their point of reference remains
+ * the same (the Unix epoch).
+ *
+ * However, if a Timestamp column has no timezone value, changing it to a
+ * non-empty value requires to think about the desired semantics.
+ * One possibility is to assume that the original timestamp values are
+ * relative to the epoch of the timezone being set; timestamp values should
+ * then adjusted to the Unix epoch (for example, changing the timezone from
+ * empty to "Europe/Paris" would require converting the timestamp values
+ * from "Europe/Paris" to "UTC", which seems counter-intuitive but is
+ * nevertheless correct).
+ *
+ * Guidelines for encoding data from external libraries
+ * ----------------------------------------------------
+ *
+ * Date & time libraries often have multiple different data types for temporal
+ * data. In order to ease interoperability between different implementations the
+ * Arrow project has some recommendations for encoding these types into a Timestamp
+ * column.
+ *
+ * An "instant" represents a physical point in time that has no relevant timezone
+ * (for example, astronomical data). To encode an instant, use a Timestamp with
+ * the timezone string set to "UTC", and make sure the Timestamp values
+ * are relative to the UTC epoch (January 1st 1970, midnight).
+ *
+ * A "zoned date-time" represents a physical point in time annotated with an
+ * informative timezone (for example, the timezone in which the data was
+ * recorded).  To encode a zoned date-time, use a Timestamp with the timezone
+ * string set to the name of the timezone, and make sure the Timestamp values
+ * are relative to the UTC epoch (January 1st 1970, midnight).
+ *
+ *  (There is some ambiguity between an instant and a zoned date-time with the
+ *   UTC timezone.  Both of these are stored the same in Arrow.  Typically,
+ *   this distinction does not matter.  If it does, then an application should
+ *   use custom metadata or an extension type to distinguish between the two cases.)
+ *
+ * An "offset date-time" represents a physical point in time combined with an
+ * explicit offset from UTC.  To encode an offset date-time, use a Timestamp
+ * with the timezone string set to the numeric timezone offset string
+ * (e.g. "+03:00"), and make sure the Timestamp values are relative to
+ * the UTC epoch (January 1st 1970, midnight).
+ *
+ * A "naive date-time" (also called "local date-time" in some libraries)
+ * represents a wall clock time combined with a calendar date, but with
+ * no indication of how to map this information to a physical point in time.
+ * Naive date-times must be handled with care because of this missing
+ * information, and also because daylight saving time (DST) may make
+ * some values ambiguous or non-existent. A naive date-time may be
+ * stored as a struct with Date and Time fields. However, it may also be
+ * encoded into a Timestamp column with an empty timezone. The timestamp
+ * values should be computed "as if" the timezone of the date-time values
+ * was UTC; for example, the naive date-time "January 1st 1970, 00h00" would
+ * be encoded as timestamp value 0.
+ */
+class Timestamp {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsTimestamp(bb, obj) {
+        return (obj || new Timestamp()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsTimestamp(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Timestamp()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    unit() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : time_unit_js_1.TimeUnit.SECOND;
+    }
+    timezone(optionalEncoding) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__string(this.bb_pos + offset, optionalEncoding) : null;
+    }
+    static startTimestamp(builder) {
+        builder.startObject(2);
+    }
+    static addUnit(builder, unit) {
+        builder.addFieldInt16(0, unit, time_unit_js_1.TimeUnit.SECOND);
+    }
+    static addTimezone(builder, timezoneOffset) {
+        builder.addFieldOffset(1, timezoneOffset, 0);
+    }
+    static endTimestamp(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createTimestamp(builder, unit, timezoneOffset) {
+        Timestamp.startTimestamp(builder);
+        Timestamp.addUnit(builder, unit);
+        Timestamp.addTimezone(builder, timezoneOffset);
+        return Timestamp.endTimestamp(builder);
+    }
+}
+exports.Timestamp = Timestamp;
+
+//# sourceMappingURL=timestamp.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/timestamp.js.map b/igv_component/node_modules/apache-arrow/fb/timestamp.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..84f316fd8345d65cb74000c15ea7e0dd55a0c95b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/timestamp.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/timestamp.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,iDAA0C;AAG1C;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;GA0GG;AACH,MAAa,SAAS;IAAtB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA+Db,CAAC;IA9DD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,EAAyB,EAAE,GAAc;QACjE,OAAO,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC1F,CAAC;IAED,MAAM,CAAC,8BAA8B,CAAC,EAAyB,EAAE,GAAc;QAC7E,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC1F,CAAC;IAED,IAAI;QACF,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,uBAAQ,CAAC,MAAM,CAAC;IAC7E,CAAC;IAgBD,QAAQ,CAAC,gBAAqB;QAC5B,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,EAAE,gBAAgB,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACnF,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B;QAC/C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,IAAa;QACvD,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,IAAI,EAAE,uBAAQ,CAAC,MAAM,CAAC,CAAC;IAClD,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,cAAiC;QAC/E,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,cAAc,EAAE,CAAC,CAAC,CAAC;IAC/C,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B;QAC7C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,OAA2B,EAAE,IAAa,EAAE,cAAiC;QAClG,SAAS,CAAC,cAAc,CAAC,OAAO,CAAC,CAAC;QAClC,SAAS,CAAC,OAAO,CAAC,OAAO,EAAE,IAAI,CAAC,CAAC;QACjC,SAAS,CAAC,WAAW,CAAC,OAAO,EAAE,cAAc,CAAC,CAAC;QAC/C,OAAO,SAAS,CAAC,YAAY,CAAC,OAAO,CAAC,CAAC;IACzC,CAAC;CACA;AAjED,8BAiEC","file":"timestamp.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/timestamp.mjs b/igv_component/node_modules/apache-arrow/fb/timestamp.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..52ea344eb8380271e5d6d9809858e447a8b9f9e2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/timestamp.mjs
@@ -0,0 +1,157 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { TimeUnit } from './time-unit.mjs';
+/**
+ * Timestamp is a 64-bit signed integer representing an elapsed time since a
+ * fixed epoch, stored in either of four units: seconds, milliseconds,
+ * microseconds or nanoseconds, and is optionally annotated with a timezone.
+ *
+ * Timestamp values do not include any leap seconds (in other words, all
+ * days are considered 86400 seconds long).
+ *
+ * Timestamps with a non-empty timezone
+ * ------------------------------------
+ *
+ * If a Timestamp column has a non-empty timezone value, its epoch is
+ * 1970-01-01 00:00:00 (January 1st 1970, midnight) in the *UTC* timezone
+ * (the Unix epoch), regardless of the Timestamp's own timezone.
+ *
+ * Therefore, timestamp values with a non-empty timezone correspond to
+ * physical points in time together with some additional information about
+ * how the data was obtained and/or how to display it (the timezone).
+ *
+ *   For example, the timestamp value 0 with the timezone string "Europe/Paris"
+ *   corresponds to "January 1st 1970, 00h00" in the UTC timezone, but the
+ *   application may prefer to display it as "January 1st 1970, 01h00" in
+ *   the Europe/Paris timezone (which is the same physical point in time).
+ *
+ * One consequence is that timestamp values with a non-empty timezone
+ * can be compared and ordered directly, since they all share the same
+ * well-known point of reference (the Unix epoch).
+ *
+ * Timestamps with an unset / empty timezone
+ * -----------------------------------------
+ *
+ * If a Timestamp column has no timezone value, its epoch is
+ * 1970-01-01 00:00:00 (January 1st 1970, midnight) in an *unknown* timezone.
+ *
+ * Therefore, timestamp values without a timezone cannot be meaningfully
+ * interpreted as physical points in time, but only as calendar / clock
+ * indications ("wall clock time") in an unspecified timezone.
+ *
+ *   For example, the timestamp value 0 with an empty timezone string
+ *   corresponds to "January 1st 1970, 00h00" in an unknown timezone: there
+ *   is not enough information to interpret it as a well-defined physical
+ *   point in time.
+ *
+ * One consequence is that timestamp values without a timezone cannot
+ * be reliably compared or ordered, since they may have different points of
+ * reference.  In particular, it is *not* possible to interpret an unset
+ * or empty timezone as the same as "UTC".
+ *
+ * Conversion between timezones
+ * ----------------------------
+ *
+ * If a Timestamp column has a non-empty timezone, changing the timezone
+ * to a different non-empty value is a metadata-only operation:
+ * the timestamp values need not change as their point of reference remains
+ * the same (the Unix epoch).
+ *
+ * However, if a Timestamp column has no timezone value, changing it to a
+ * non-empty value requires to think about the desired semantics.
+ * One possibility is to assume that the original timestamp values are
+ * relative to the epoch of the timezone being set; timestamp values should
+ * then adjusted to the Unix epoch (for example, changing the timezone from
+ * empty to "Europe/Paris" would require converting the timestamp values
+ * from "Europe/Paris" to "UTC", which seems counter-intuitive but is
+ * nevertheless correct).
+ *
+ * Guidelines for encoding data from external libraries
+ * ----------------------------------------------------
+ *
+ * Date & time libraries often have multiple different data types for temporal
+ * data. In order to ease interoperability between different implementations the
+ * Arrow project has some recommendations for encoding these types into a Timestamp
+ * column.
+ *
+ * An "instant" represents a physical point in time that has no relevant timezone
+ * (for example, astronomical data). To encode an instant, use a Timestamp with
+ * the timezone string set to "UTC", and make sure the Timestamp values
+ * are relative to the UTC epoch (January 1st 1970, midnight).
+ *
+ * A "zoned date-time" represents a physical point in time annotated with an
+ * informative timezone (for example, the timezone in which the data was
+ * recorded).  To encode a zoned date-time, use a Timestamp with the timezone
+ * string set to the name of the timezone, and make sure the Timestamp values
+ * are relative to the UTC epoch (January 1st 1970, midnight).
+ *
+ *  (There is some ambiguity between an instant and a zoned date-time with the
+ *   UTC timezone.  Both of these are stored the same in Arrow.  Typically,
+ *   this distinction does not matter.  If it does, then an application should
+ *   use custom metadata or an extension type to distinguish between the two cases.)
+ *
+ * An "offset date-time" represents a physical point in time combined with an
+ * explicit offset from UTC.  To encode an offset date-time, use a Timestamp
+ * with the timezone string set to the numeric timezone offset string
+ * (e.g. "+03:00"), and make sure the Timestamp values are relative to
+ * the UTC epoch (January 1st 1970, midnight).
+ *
+ * A "naive date-time" (also called "local date-time" in some libraries)
+ * represents a wall clock time combined with a calendar date, but with
+ * no indication of how to map this information to a physical point in time.
+ * Naive date-times must be handled with care because of this missing
+ * information, and also because daylight saving time (DST) may make
+ * some values ambiguous or non-existent. A naive date-time may be
+ * stored as a struct with Date and Time fields. However, it may also be
+ * encoded into a Timestamp column with an empty timezone. The timestamp
+ * values should be computed "as if" the timezone of the date-time values
+ * was UTC; for example, the naive date-time "January 1st 1970, 00h00" would
+ * be encoded as timestamp value 0.
+ */
+export class Timestamp {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsTimestamp(bb, obj) {
+        return (obj || new Timestamp()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsTimestamp(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Timestamp()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    unit() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : TimeUnit.SECOND;
+    }
+    timezone(optionalEncoding) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__string(this.bb_pos + offset, optionalEncoding) : null;
+    }
+    static startTimestamp(builder) {
+        builder.startObject(2);
+    }
+    static addUnit(builder, unit) {
+        builder.addFieldInt16(0, unit, TimeUnit.SECOND);
+    }
+    static addTimezone(builder, timezoneOffset) {
+        builder.addFieldOffset(1, timezoneOffset, 0);
+    }
+    static endTimestamp(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createTimestamp(builder, unit, timezoneOffset) {
+        Timestamp.startTimestamp(builder);
+        Timestamp.addUnit(builder, unit);
+        Timestamp.addTimezone(builder, timezoneOffset);
+        return Timestamp.endTimestamp(builder);
+    }
+}
+
+//# sourceMappingURL=timestamp.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/timestamp.mjs.map b/igv_component/node_modules/apache-arrow/fb/timestamp.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..8655a23886c6701ae017914cc54ef7d6816e75d2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/timestamp.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/timestamp.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,QAAQ,EAAE,MAAM,gBAAgB,CAAC;AAG1C;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;GA0GG;AACH,MAAM,OAAO,SAAS;IAAtB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA+Db,CAAC;IA9DD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,EAAyB,EAAE,GAAc;QACjE,OAAO,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC1F,CAAC;IAED,MAAM,CAAC,8BAA8B,CAAC,EAAyB,EAAE,GAAc;QAC7E,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,SAAS,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IAC1F,CAAC;IAED,IAAI;QACF,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,QAAQ,CAAC,MAAM,CAAC;IAC7E,CAAC;IAgBD,QAAQ,CAAC,gBAAqB;QAC5B,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,EAAE,gBAAgB,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACnF,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,OAA2B;QAC/C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,IAAa;QACvD,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,IAAI,EAAE,QAAQ,CAAC,MAAM,CAAC,CAAC;IAClD,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,cAAiC;QAC/E,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,cAAc,EAAE,CAAC,CAAC,CAAC;IAC/C,CAAC;IAED,MAAM,CAAC,YAAY,CAAC,OAA2B;QAC7C,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,eAAe,CAAC,OAA2B,EAAE,IAAa,EAAE,cAAiC;QAClG,SAAS,CAAC,cAAc,CAAC,OAAO,CAAC,CAAC;QAClC,SAAS,CAAC,OAAO,CAAC,OAAO,EAAE,IAAI,CAAC,CAAC;QACjC,SAAS,CAAC,WAAW,CAAC,OAAO,EAAE,cAAc,CAAC,CAAC;QAC/C,OAAO,SAAS,CAAC,YAAY,CAAC,OAAO,CAAC,CAAC;IACzC,CAAC;CACA","file":"timestamp.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/type.d.ts b/igv_component/node_modules/apache-arrow/fb/type.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..75b8692e3808e46615e6a5371dd4ef46ebe639c1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/type.d.ts
@@ -0,0 +1,52 @@
+import { Binary } from './binary.js';
+import { Bool } from './bool.js';
+import { Date } from './date.js';
+import { Decimal } from './decimal.js';
+import { Duration } from './duration.js';
+import { FixedSizeBinary } from './fixed-size-binary.js';
+import { FixedSizeList } from './fixed-size-list.js';
+import { FloatingPoint } from './floating-point.js';
+import { Int } from './int.js';
+import { Interval } from './interval.js';
+import { LargeBinary } from './large-binary.js';
+import { LargeList } from './large-list.js';
+import { LargeUtf8 } from './large-utf8.js';
+import { List } from './list.js';
+import { Map } from './map.js';
+import { Null } from './null.js';
+import { Struct_ } from './struct_.js';
+import { Time } from './time.js';
+import { Timestamp } from './timestamp.js';
+import { Union } from './union.js';
+import { Utf8 } from './utf8.js';
+/**
+ * ----------------------------------------------------------------------
+ * Top-level Type value, enabling extensible type-specific metadata. We can
+ * add new logical types to Type without breaking backwards compatibility
+ */
+export declare enum Type {
+    NONE = 0,
+    Null = 1,
+    Int = 2,
+    FloatingPoint = 3,
+    Binary = 4,
+    Utf8 = 5,
+    Bool = 6,
+    Decimal = 7,
+    Date = 8,
+    Time = 9,
+    Timestamp = 10,
+    Interval = 11,
+    List = 12,
+    Struct_ = 13,
+    Union = 14,
+    FixedSizeBinary = 15,
+    FixedSizeList = 16,
+    Map = 17,
+    Duration = 18,
+    LargeBinary = 19,
+    LargeUtf8 = 20,
+    LargeList = 21
+}
+export declare function unionToType(type: Type, accessor: (obj: Binary | Bool | Date | Decimal | Duration | FixedSizeBinary | FixedSizeList | FloatingPoint | Int | Interval | LargeBinary | LargeList | LargeUtf8 | List | Map | Null | Struct_ | Time | Timestamp | Union | Utf8) => Binary | Bool | Date | Decimal | Duration | FixedSizeBinary | FixedSizeList | FloatingPoint | Int | Interval | LargeBinary | LargeList | LargeUtf8 | List | Map | Null | Struct_ | Time | Timestamp | Union | Utf8 | null): Binary | Bool | Date | Decimal | Duration | FixedSizeBinary | FixedSizeList | FloatingPoint | Int | Interval | LargeBinary | LargeList | LargeUtf8 | List | Map | Null | Struct_ | Time | Timestamp | Union | Utf8 | null;
+export declare function unionListToType(type: Type, accessor: (index: number, obj: Binary | Bool | Date | Decimal | Duration | FixedSizeBinary | FixedSizeList | FloatingPoint | Int | Interval | LargeBinary | LargeList | LargeUtf8 | List | Map | Null | Struct_ | Time | Timestamp | Union | Utf8) => Binary | Bool | Date | Decimal | Duration | FixedSizeBinary | FixedSizeList | FloatingPoint | Int | Interval | LargeBinary | LargeList | LargeUtf8 | List | Map | Null | Struct_ | Time | Timestamp | Union | Utf8 | null, index: number): Binary | Bool | Date | Decimal | Duration | FixedSizeBinary | FixedSizeList | FloatingPoint | Int | Interval | LargeBinary | LargeList | LargeUtf8 | List | Map | Null | Struct_ | Time | Timestamp | Union | Utf8 | null;
diff --git a/igv_component/node_modules/apache-arrow/fb/type.d.ts.map b/igv_component/node_modules/apache-arrow/fb/type.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..d924f04157fc9d966f84ed4195fea4ead10738be
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/type.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/type.ts"],"names":[],"mappings":"AAEA,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AACrC,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AACjC,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AACjC,OAAO,EAAE,OAAO,EAAE,MAAM,cAAc,CAAC;AACvC,OAAO,EAAE,QAAQ,EAAE,MAAM,eAAe,CAAC;AACzC,OAAO,EAAE,eAAe,EAAE,MAAM,wBAAwB,CAAC;AACzD,OAAO,EAAE,aAAa,EAAE,MAAM,sBAAsB,CAAC;AACrD,OAAO,EAAE,aAAa,EAAE,MAAM,qBAAqB,CAAC;AACpD,OAAO,EAAE,GAAG,EAAE,MAAM,UAAU,CAAC;AAC/B,OAAO,EAAE,QAAQ,EAAE,MAAM,eAAe,CAAC;AACzC,OAAO,EAAE,WAAW,EAAE,MAAM,mBAAmB,CAAC;AAChD,OAAO,EAAE,SAAS,EAAE,MAAM,iBAAiB,CAAC;AAC5C,OAAO,EAAE,SAAS,EAAE,MAAM,iBAAiB,CAAC;AAC5C,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AACjC,OAAO,EAAE,GAAG,EAAE,MAAM,UAAU,CAAC;AAC/B,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AACjC,OAAO,EAAE,OAAO,EAAE,MAAM,cAAc,CAAC;AACvC,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AACjC,OAAO,EAAE,SAAS,EAAE,MAAM,gBAAgB,CAAC;AAC3C,OAAO,EAAE,KAAK,EAAE,MAAM,YAAY,CAAC;AACnC,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AAGjC;;;;GAIG;AACH,oBAAY,IAAI;IACd,IAAI,IAAI;IACR,IAAI,IAAI;IACR,GAAG,IAAI;IACP,aAAa,IAAI;IACjB,MAAM,IAAI;IACV,IAAI,IAAI;IACR,IAAI,IAAI;IACR,OAAO,IAAI;IACX,IAAI,IAAI;IACR,IAAI,IAAI;IACR,SAAS,KAAK;IACd,QAAQ,KAAK;IACb,IAAI,KAAK;IACT,OAAO,KAAK;IACZ,KAAK,KAAK;IACV,eAAe,KAAK;IACpB,aAAa,KAAK;IAClB,GAAG,KAAK;IACR,QAAQ,KAAK;IACb,WAAW,KAAK;IAChB,SAAS,KAAK;IACd,SAAS,KAAK;CACf;AAED,wBAAgB,WAAW,CACzB,IAAI,EAAE,IAAI,EACV,QAAQ,EAAE,CAAC,GAAG,EAAC,MAAM,GAAC,IAAI,GAAC,IAAI,GAAC,OAAO,GAAC,QAAQ,GAAC,eAAe,GAAC,aAAa,GAAC,aAAa,GAAC,GAAG,GAAC,QAAQ,GAAC,WAAW,GAAC,SAAS,GAAC,SAAS,GAAC,IAAI,GAAC,GAAG,GAAC,IAAI,GAAC,OAAO,GAAC,IAAI,GAAC,SAAS,GAAC,KAAK,GAAC,IAAI,KAAK,MAAM,GAAC,IAAI,GAAC,IAAI,GAAC,OAAO,GAAC,QAAQ,GAAC,eAAe,GAAC,aAAa,GAAC,aAAa,GAAC,GAAG,GAAC,QAAQ,GAAC,WAAW,GAAC,SAAS,GAAC,SAAS,GAAC,IAAI,GAAC,GAAG,GAAC,IAAI,GAAC,OAAO,GAAC,IAAI,GAAC,SAAS,GAAC,KAAK,GAAC,IAAI,GAAC,IAAI,GAC5W,MAAM,GAAC,IAAI,GAAC,IAAI,GAAC,OAAO,GAAC,QAAQ,GAAC,eAAe,GAAC,aAAa,GAAC,aAAa,GAAC,GAAG,GAAC,QAAQ,GAAC,WAAW,GAAC,SAAS,GAAC,SAAS,GAAC,IAAI,GAAC,GAAG,GAAC,IAAI,GAAC,OAAO,GAAC,IAAI,GAAC,SAAS,GAAC,KAAK,GAAC,IAAI,GAAC,IAAI,CA0BjL;AAED,wBAAgB,eAAe,CAC7B,IAAI,EAAE,IAAI,EACV,QAAQ,EAAE,CAAC,KAAK,EAAE,MAAM,EAAE,GAAG,EAAC,MAAM,GAAC,IAAI,GAAC,IAAI,GAAC,OAAO,GAAC,QAAQ,GAAC,eAAe,GAAC,aAAa,GAAC,aAAa,GAAC,GAAG,GAAC,QAAQ,GAAC,WAAW,GAAC,SAAS,GAAC,SAAS,GAAC,IAAI,GAAC,GAAG,GAAC,IAAI,GAAC,OAAO,GAAC,IAAI,GAAC,SAAS,GAAC,KAAK,GAAC,IAAI,KAAK,MAAM,GAAC,IAAI,GAAC,IAAI,GAAC,OAAO,GAAC,QAAQ,GAAC,eAAe,GAAC,aAAa,GAAC,aAAa,GAAC,GAAG,GAAC,QAAQ,GAAC,WAAW,GAAC,SAAS,GAAC,SAAS,GAAC,IAAI,GAAC,GAAG,GAAC,IAAI,GAAC,OAAO,GAAC,IAAI,GAAC,SAAS,GAAC,KAAK,GAAC,IAAI,GAAC,IAAI,EAC5X,KAAK,EAAE,MAAM,GACZ,MAAM,GAAC,IAAI,GAAC,IAAI,GAAC,OAAO,GAAC,QAAQ,GAAC,eAAe,GAAC,aAAa,GAAC,aAAa,GAAC,GAAG,GAAC,QAAQ,GAAC,WAAW,GAAC,SAAS,GAAC,SAAS,GAAC,IAAI,GAAC,GAAG,GAAC,IAAI,GAAC,OAAO,GAAC,IAAI,GAAC,SAAS,GAAC,KAAK,GAAC,IAAI,GAAC,IAAI,CA0BjL","file":"type.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/type.js b/igv_component/node_modules/apache-arrow/fb/type.js
new file mode 100644
index 0000000000000000000000000000000000000000..5ae9d244d51f4d2f55ed06b11eea3ef3795fc7a3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/type.js
@@ -0,0 +1,113 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.unionListToType = exports.unionToType = exports.Type = void 0;
+const binary_js_1 = require("./binary.js");
+const bool_js_1 = require("./bool.js");
+const date_js_1 = require("./date.js");
+const decimal_js_1 = require("./decimal.js");
+const duration_js_1 = require("./duration.js");
+const fixed_size_binary_js_1 = require("./fixed-size-binary.js");
+const fixed_size_list_js_1 = require("./fixed-size-list.js");
+const floating_point_js_1 = require("./floating-point.js");
+const int_js_1 = require("./int.js");
+const interval_js_1 = require("./interval.js");
+const large_binary_js_1 = require("./large-binary.js");
+const large_list_js_1 = require("./large-list.js");
+const large_utf8_js_1 = require("./large-utf8.js");
+const list_js_1 = require("./list.js");
+const map_js_1 = require("./map.js");
+const null_js_1 = require("./null.js");
+const struct__js_1 = require("./struct_.js");
+const time_js_1 = require("./time.js");
+const timestamp_js_1 = require("./timestamp.js");
+const union_js_1 = require("./union.js");
+const utf8_js_1 = require("./utf8.js");
+/**
+ * ----------------------------------------------------------------------
+ * Top-level Type value, enabling extensible type-specific metadata. We can
+ * add new logical types to Type without breaking backwards compatibility
+ */
+var Type;
+(function (Type) {
+    Type[Type["NONE"] = 0] = "NONE";
+    Type[Type["Null"] = 1] = "Null";
+    Type[Type["Int"] = 2] = "Int";
+    Type[Type["FloatingPoint"] = 3] = "FloatingPoint";
+    Type[Type["Binary"] = 4] = "Binary";
+    Type[Type["Utf8"] = 5] = "Utf8";
+    Type[Type["Bool"] = 6] = "Bool";
+    Type[Type["Decimal"] = 7] = "Decimal";
+    Type[Type["Date"] = 8] = "Date";
+    Type[Type["Time"] = 9] = "Time";
+    Type[Type["Timestamp"] = 10] = "Timestamp";
+    Type[Type["Interval"] = 11] = "Interval";
+    Type[Type["List"] = 12] = "List";
+    Type[Type["Struct_"] = 13] = "Struct_";
+    Type[Type["Union"] = 14] = "Union";
+    Type[Type["FixedSizeBinary"] = 15] = "FixedSizeBinary";
+    Type[Type["FixedSizeList"] = 16] = "FixedSizeList";
+    Type[Type["Map"] = 17] = "Map";
+    Type[Type["Duration"] = 18] = "Duration";
+    Type[Type["LargeBinary"] = 19] = "LargeBinary";
+    Type[Type["LargeUtf8"] = 20] = "LargeUtf8";
+    Type[Type["LargeList"] = 21] = "LargeList";
+})(Type = exports.Type || (exports.Type = {}));
+function unionToType(type, accessor) {
+    switch (Type[type]) {
+        case 'NONE': return null;
+        case 'Null': return accessor(new null_js_1.Null());
+        case 'Int': return accessor(new int_js_1.Int());
+        case 'FloatingPoint': return accessor(new floating_point_js_1.FloatingPoint());
+        case 'Binary': return accessor(new binary_js_1.Binary());
+        case 'Utf8': return accessor(new utf8_js_1.Utf8());
+        case 'Bool': return accessor(new bool_js_1.Bool());
+        case 'Decimal': return accessor(new decimal_js_1.Decimal());
+        case 'Date': return accessor(new date_js_1.Date());
+        case 'Time': return accessor(new time_js_1.Time());
+        case 'Timestamp': return accessor(new timestamp_js_1.Timestamp());
+        case 'Interval': return accessor(new interval_js_1.Interval());
+        case 'List': return accessor(new list_js_1.List());
+        case 'Struct_': return accessor(new struct__js_1.Struct_());
+        case 'Union': return accessor(new union_js_1.Union());
+        case 'FixedSizeBinary': return accessor(new fixed_size_binary_js_1.FixedSizeBinary());
+        case 'FixedSizeList': return accessor(new fixed_size_list_js_1.FixedSizeList());
+        case 'Map': return accessor(new map_js_1.Map());
+        case 'Duration': return accessor(new duration_js_1.Duration());
+        case 'LargeBinary': return accessor(new large_binary_js_1.LargeBinary());
+        case 'LargeUtf8': return accessor(new large_utf8_js_1.LargeUtf8());
+        case 'LargeList': return accessor(new large_list_js_1.LargeList());
+        default: return null;
+    }
+}
+exports.unionToType = unionToType;
+function unionListToType(type, accessor, index) {
+    switch (Type[type]) {
+        case 'NONE': return null;
+        case 'Null': return accessor(index, new null_js_1.Null());
+        case 'Int': return accessor(index, new int_js_1.Int());
+        case 'FloatingPoint': return accessor(index, new floating_point_js_1.FloatingPoint());
+        case 'Binary': return accessor(index, new binary_js_1.Binary());
+        case 'Utf8': return accessor(index, new utf8_js_1.Utf8());
+        case 'Bool': return accessor(index, new bool_js_1.Bool());
+        case 'Decimal': return accessor(index, new decimal_js_1.Decimal());
+        case 'Date': return accessor(index, new date_js_1.Date());
+        case 'Time': return accessor(index, new time_js_1.Time());
+        case 'Timestamp': return accessor(index, new timestamp_js_1.Timestamp());
+        case 'Interval': return accessor(index, new interval_js_1.Interval());
+        case 'List': return accessor(index, new list_js_1.List());
+        case 'Struct_': return accessor(index, new struct__js_1.Struct_());
+        case 'Union': return accessor(index, new union_js_1.Union());
+        case 'FixedSizeBinary': return accessor(index, new fixed_size_binary_js_1.FixedSizeBinary());
+        case 'FixedSizeList': return accessor(index, new fixed_size_list_js_1.FixedSizeList());
+        case 'Map': return accessor(index, new map_js_1.Map());
+        case 'Duration': return accessor(index, new duration_js_1.Duration());
+        case 'LargeBinary': return accessor(index, new large_binary_js_1.LargeBinary());
+        case 'LargeUtf8': return accessor(index, new large_utf8_js_1.LargeUtf8());
+        case 'LargeList': return accessor(index, new large_list_js_1.LargeList());
+        default: return null;
+    }
+}
+exports.unionListToType = unionListToType;
+
+//# sourceMappingURL=type.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/type.js.map b/igv_component/node_modules/apache-arrow/fb/type.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..e33cad7bbb010b603bed3984fcc072828465c35f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/type.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/type.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAErE,2CAAqC;AACrC,uCAAiC;AACjC,uCAAiC;AACjC,6CAAuC;AACvC,+CAAyC;AACzC,iEAAyD;AACzD,6DAAqD;AACrD,2DAAoD;AACpD,qCAA+B;AAC/B,+CAAyC;AACzC,uDAAgD;AAChD,mDAA4C;AAC5C,mDAA4C;AAC5C,uCAAiC;AACjC,qCAA+B;AAC/B,uCAAiC;AACjC,6CAAuC;AACvC,uCAAiC;AACjC,iDAA2C;AAC3C,yCAAmC;AACnC,uCAAiC;AAGjC;;;;GAIG;AACH,IAAY,IAuBX;AAvBD,WAAY,IAAI;IACd,+BAAQ,CAAA;IACR,+BAAQ,CAAA;IACR,6BAAO,CAAA;IACP,iDAAiB,CAAA;IACjB,mCAAU,CAAA;IACV,+BAAQ,CAAA;IACR,+BAAQ,CAAA;IACR,qCAAW,CAAA;IACX,+BAAQ,CAAA;IACR,+BAAQ,CAAA;IACR,0CAAc,CAAA;IACd,wCAAa,CAAA;IACb,gCAAS,CAAA;IACT,sCAAY,CAAA;IACZ,kCAAU,CAAA;IACV,sDAAoB,CAAA;IACpB,kDAAkB,CAAA;IAClB,8BAAQ,CAAA;IACR,wCAAa,CAAA;IACb,8CAAgB,CAAA;IAChB,0CAAc,CAAA;IACd,0CAAc,CAAA;AAChB,CAAC,EAvBW,IAAI,GAAJ,YAAI,KAAJ,YAAI,QAuBf;AAED,SAAgB,WAAW,CACzB,IAAU,EACV,QAA6W;IAE7W,QAAO,IAAI,CAAC,IAAI,CAAC,EAAE;QACjB,KAAK,MAAM,CAAC,CAAC,OAAO,IAAI,CAAC;QACzB,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,cAAI,EAAE,CAAU,CAAC;QAClD,KAAK,KAAK,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,YAAG,EAAE,CAAS,CAAC;QAC/C,KAAK,eAAe,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,iCAAa,EAAE,CAAmB,CAAC;QAC7E,KAAK,QAAQ,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,kBAAM,EAAE,CAAY,CAAC;QACxD,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,cAAI,EAAE,CAAU,CAAC;QAClD,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,cAAI,EAAE,CAAU,CAAC;QAClD,KAAK,SAAS,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,oBAAO,EAAE,CAAa,CAAC;QAC3D,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,cAAI,EAAE,CAAU,CAAC;QAClD,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,cAAI,EAAE,CAAU,CAAC;QAClD,KAAK,WAAW,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,wBAAS,EAAE,CAAe,CAAC;QACjE,KAAK,UAAU,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,sBAAQ,EAAE,CAAc,CAAC;QAC9D,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,cAAI,EAAE,CAAU,CAAC;QAClD,KAAK,SAAS,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,oBAAO,EAAE,CAAa,CAAC;QAC3D,KAAK,OAAO,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,gBAAK,EAAE,CAAW,CAAC;QACrD,KAAK,iBAAiB,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,sCAAe,EAAE,CAAqB,CAAC;QACnF,KAAK,eAAe,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,kCAAa,EAAE,CAAmB,CAAC;QAC7E,KAAK,KAAK,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,YAAG,EAAE,CAAS,CAAC;QAC/C,KAAK,UAAU,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,sBAAQ,EAAE,CAAc,CAAC;QAC9D,KAAK,aAAa,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,6BAAW,EAAE,CAAiB,CAAC;QACvE,KAAK,WAAW,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,yBAAS,EAAE,CAAe,CAAC;QACjE,KAAK,WAAW,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,yBAAS,EAAE,CAAe,CAAC;QACjE,OAAO,CAAC,CAAC,OAAO,IAAI,CAAC;KACtB;AACH,CAAC;AA7BD,kCA6BC;AAED,SAAgB,eAAe,CAC7B,IAAU,EACV,QAA4X,EAC5X,KAAa;IAEb,QAAO,IAAI,CAAC,IAAI,CAAC,EAAE;QACjB,KAAK,MAAM,CAAC,CAAC,OAAO,IAAI,CAAC;QACzB,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,cAAI,EAAE,CAAU,CAAC;QACzD,KAAK,KAAK,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,YAAG,EAAE,CAAS,CAAC;QACtD,KAAK,eAAe,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,iCAAa,EAAE,CAAmB,CAAC;QACpF,KAAK,QAAQ,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,kBAAM,EAAE,CAAY,CAAC;QAC/D,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,cAAI,EAAE,CAAU,CAAC;QACzD,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,cAAI,EAAE,CAAU,CAAC;QACzD,KAAK,SAAS,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,oBAAO,EAAE,CAAa,CAAC;QAClE,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,cAAI,EAAE,CAAU,CAAC;QACzD,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,cAAI,EAAE,CAAU,CAAC;QACzD,KAAK,WAAW,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,wBAAS,EAAE,CAAe,CAAC;QACxE,KAAK,UAAU,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,sBAAQ,EAAE,CAAc,CAAC;QACrE,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,cAAI,EAAE,CAAU,CAAC;QACzD,KAAK,SAAS,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,oBAAO,EAAE,CAAa,CAAC;QAClE,KAAK,OAAO,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,gBAAK,EAAE,CAAW,CAAC;QAC5D,KAAK,iBAAiB,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,sCAAe,EAAE,CAAqB,CAAC;QAC1F,KAAK,eAAe,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,kCAAa,EAAE,CAAmB,CAAC;QACpF,KAAK,KAAK,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,YAAG,EAAE,CAAS,CAAC;QACtD,KAAK,UAAU,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,sBAAQ,EAAE,CAAc,CAAC;QACrE,KAAK,aAAa,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,6BAAW,EAAE,CAAiB,CAAC;QAC9E,KAAK,WAAW,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,yBAAS,EAAE,CAAe,CAAC;QACxE,KAAK,WAAW,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,yBAAS,EAAE,CAAe,CAAC;QACxE,OAAO,CAAC,CAAC,OAAO,IAAI,CAAC;KACtB;AACH,CAAC;AA9BD,0CA8BC","file":"type.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/type.mjs b/igv_component/node_modules/apache-arrow/fb/type.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..e1af98f068381d38bb45bc549b3c2aac4c59f8cb
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/type.mjs
@@ -0,0 +1,108 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import { Binary } from './binary.mjs';
+import { Bool } from './bool.mjs';
+import { Date } from './date.mjs';
+import { Decimal } from './decimal.mjs';
+import { Duration } from './duration.mjs';
+import { FixedSizeBinary } from './fixed-size-binary.mjs';
+import { FixedSizeList } from './fixed-size-list.mjs';
+import { FloatingPoint } from './floating-point.mjs';
+import { Int } from './int.mjs';
+import { Interval } from './interval.mjs';
+import { LargeBinary } from './large-binary.mjs';
+import { LargeList } from './large-list.mjs';
+import { LargeUtf8 } from './large-utf8.mjs';
+import { List } from './list.mjs';
+import { Map } from './map.mjs';
+import { Null } from './null.mjs';
+import { Struct_ } from './struct_.mjs';
+import { Time } from './time.mjs';
+import { Timestamp } from './timestamp.mjs';
+import { Union } from './union.mjs';
+import { Utf8 } from './utf8.mjs';
+/**
+ * ----------------------------------------------------------------------
+ * Top-level Type value, enabling extensible type-specific metadata. We can
+ * add new logical types to Type without breaking backwards compatibility
+ */
+export var Type;
+(function (Type) {
+    Type[Type["NONE"] = 0] = "NONE";
+    Type[Type["Null"] = 1] = "Null";
+    Type[Type["Int"] = 2] = "Int";
+    Type[Type["FloatingPoint"] = 3] = "FloatingPoint";
+    Type[Type["Binary"] = 4] = "Binary";
+    Type[Type["Utf8"] = 5] = "Utf8";
+    Type[Type["Bool"] = 6] = "Bool";
+    Type[Type["Decimal"] = 7] = "Decimal";
+    Type[Type["Date"] = 8] = "Date";
+    Type[Type["Time"] = 9] = "Time";
+    Type[Type["Timestamp"] = 10] = "Timestamp";
+    Type[Type["Interval"] = 11] = "Interval";
+    Type[Type["List"] = 12] = "List";
+    Type[Type["Struct_"] = 13] = "Struct_";
+    Type[Type["Union"] = 14] = "Union";
+    Type[Type["FixedSizeBinary"] = 15] = "FixedSizeBinary";
+    Type[Type["FixedSizeList"] = 16] = "FixedSizeList";
+    Type[Type["Map"] = 17] = "Map";
+    Type[Type["Duration"] = 18] = "Duration";
+    Type[Type["LargeBinary"] = 19] = "LargeBinary";
+    Type[Type["LargeUtf8"] = 20] = "LargeUtf8";
+    Type[Type["LargeList"] = 21] = "LargeList";
+})(Type || (Type = {}));
+export function unionToType(type, accessor) {
+    switch (Type[type]) {
+        case 'NONE': return null;
+        case 'Null': return accessor(new Null());
+        case 'Int': return accessor(new Int());
+        case 'FloatingPoint': return accessor(new FloatingPoint());
+        case 'Binary': return accessor(new Binary());
+        case 'Utf8': return accessor(new Utf8());
+        case 'Bool': return accessor(new Bool());
+        case 'Decimal': return accessor(new Decimal());
+        case 'Date': return accessor(new Date());
+        case 'Time': return accessor(new Time());
+        case 'Timestamp': return accessor(new Timestamp());
+        case 'Interval': return accessor(new Interval());
+        case 'List': return accessor(new List());
+        case 'Struct_': return accessor(new Struct_());
+        case 'Union': return accessor(new Union());
+        case 'FixedSizeBinary': return accessor(new FixedSizeBinary());
+        case 'FixedSizeList': return accessor(new FixedSizeList());
+        case 'Map': return accessor(new Map());
+        case 'Duration': return accessor(new Duration());
+        case 'LargeBinary': return accessor(new LargeBinary());
+        case 'LargeUtf8': return accessor(new LargeUtf8());
+        case 'LargeList': return accessor(new LargeList());
+        default: return null;
+    }
+}
+export function unionListToType(type, accessor, index) {
+    switch (Type[type]) {
+        case 'NONE': return null;
+        case 'Null': return accessor(index, new Null());
+        case 'Int': return accessor(index, new Int());
+        case 'FloatingPoint': return accessor(index, new FloatingPoint());
+        case 'Binary': return accessor(index, new Binary());
+        case 'Utf8': return accessor(index, new Utf8());
+        case 'Bool': return accessor(index, new Bool());
+        case 'Decimal': return accessor(index, new Decimal());
+        case 'Date': return accessor(index, new Date());
+        case 'Time': return accessor(index, new Time());
+        case 'Timestamp': return accessor(index, new Timestamp());
+        case 'Interval': return accessor(index, new Interval());
+        case 'List': return accessor(index, new List());
+        case 'Struct_': return accessor(index, new Struct_());
+        case 'Union': return accessor(index, new Union());
+        case 'FixedSizeBinary': return accessor(index, new FixedSizeBinary());
+        case 'FixedSizeList': return accessor(index, new FixedSizeList());
+        case 'Map': return accessor(index, new Map());
+        case 'Duration': return accessor(index, new Duration());
+        case 'LargeBinary': return accessor(index, new LargeBinary());
+        case 'LargeUtf8': return accessor(index, new LargeUtf8());
+        case 'LargeList': return accessor(index, new LargeList());
+        default: return null;
+    }
+}
+
+//# sourceMappingURL=type.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/type.mjs.map b/igv_component/node_modules/apache-arrow/fb/type.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..648793b8766046fe5159320af272c07e9578cb35
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/type.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/type.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,EAAE,MAAM,EAAE,MAAM,aAAa,CAAC;AACrC,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AACjC,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AACjC,OAAO,EAAE,OAAO,EAAE,MAAM,cAAc,CAAC;AACvC,OAAO,EAAE,QAAQ,EAAE,MAAM,eAAe,CAAC;AACzC,OAAO,EAAE,eAAe,EAAE,MAAM,wBAAwB,CAAC;AACzD,OAAO,EAAE,aAAa,EAAE,MAAM,sBAAsB,CAAC;AACrD,OAAO,EAAE,aAAa,EAAE,MAAM,qBAAqB,CAAC;AACpD,OAAO,EAAE,GAAG,EAAE,MAAM,UAAU,CAAC;AAC/B,OAAO,EAAE,QAAQ,EAAE,MAAM,eAAe,CAAC;AACzC,OAAO,EAAE,WAAW,EAAE,MAAM,mBAAmB,CAAC;AAChD,OAAO,EAAE,SAAS,EAAE,MAAM,iBAAiB,CAAC;AAC5C,OAAO,EAAE,SAAS,EAAE,MAAM,iBAAiB,CAAC;AAC5C,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AACjC,OAAO,EAAE,GAAG,EAAE,MAAM,UAAU,CAAC;AAC/B,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AACjC,OAAO,EAAE,OAAO,EAAE,MAAM,cAAc,CAAC;AACvC,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AACjC,OAAO,EAAE,SAAS,EAAE,MAAM,gBAAgB,CAAC;AAC3C,OAAO,EAAE,KAAK,EAAE,MAAM,YAAY,CAAC;AACnC,OAAO,EAAE,IAAI,EAAE,MAAM,WAAW,CAAC;AAGjC;;;;GAIG;AACH,MAAM,CAAN,IAAY,IAuBX;AAvBD,WAAY,IAAI;IACd,+BAAQ,CAAA;IACR,+BAAQ,CAAA;IACR,6BAAO,CAAA;IACP,iDAAiB,CAAA;IACjB,mCAAU,CAAA;IACV,+BAAQ,CAAA;IACR,+BAAQ,CAAA;IACR,qCAAW,CAAA;IACX,+BAAQ,CAAA;IACR,+BAAQ,CAAA;IACR,0CAAc,CAAA;IACd,wCAAa,CAAA;IACb,gCAAS,CAAA;IACT,sCAAY,CAAA;IACZ,kCAAU,CAAA;IACV,sDAAoB,CAAA;IACpB,kDAAkB,CAAA;IAClB,8BAAQ,CAAA;IACR,wCAAa,CAAA;IACb,8CAAgB,CAAA;IAChB,0CAAc,CAAA;IACd,0CAAc,CAAA;AAChB,CAAC,EAvBW,IAAI,KAAJ,IAAI,QAuBf;AAED,MAAM,UAAU,WAAW,CACzB,IAAU,EACV,QAA6W;IAE7W,QAAO,IAAI,CAAC,IAAI,CAAC,EAAE;QACjB,KAAK,MAAM,CAAC,CAAC,OAAO,IAAI,CAAC;QACzB,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,IAAI,EAAE,CAAU,CAAC;QAClD,KAAK,KAAK,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,GAAG,EAAE,CAAS,CAAC;QAC/C,KAAK,eAAe,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,aAAa,EAAE,CAAmB,CAAC;QAC7E,KAAK,QAAQ,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,MAAM,EAAE,CAAY,CAAC;QACxD,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,IAAI,EAAE,CAAU,CAAC;QAClD,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,IAAI,EAAE,CAAU,CAAC;QAClD,KAAK,SAAS,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,OAAO,EAAE,CAAa,CAAC;QAC3D,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,IAAI,EAAE,CAAU,CAAC;QAClD,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,IAAI,EAAE,CAAU,CAAC;QAClD,KAAK,WAAW,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,SAAS,EAAE,CAAe,CAAC;QACjE,KAAK,UAAU,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,QAAQ,EAAE,CAAc,CAAC;QAC9D,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,IAAI,EAAE,CAAU,CAAC;QAClD,KAAK,SAAS,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,OAAO,EAAE,CAAa,CAAC;QAC3D,KAAK,OAAO,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,KAAK,EAAE,CAAW,CAAC;QACrD,KAAK,iBAAiB,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,eAAe,EAAE,CAAqB,CAAC;QACnF,KAAK,eAAe,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,aAAa,EAAE,CAAmB,CAAC;QAC7E,KAAK,KAAK,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,GAAG,EAAE,CAAS,CAAC;QAC/C,KAAK,UAAU,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,QAAQ,EAAE,CAAc,CAAC;QAC9D,KAAK,aAAa,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,WAAW,EAAE,CAAiB,CAAC;QACvE,KAAK,WAAW,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,SAAS,EAAE,CAAe,CAAC;QACjE,KAAK,WAAW,CAAC,CAAC,OAAO,QAAQ,CAAC,IAAI,SAAS,EAAE,CAAe,CAAC;QACjE,OAAO,CAAC,CAAC,OAAO,IAAI,CAAC;KACtB;AACH,CAAC;AAED,MAAM,UAAU,eAAe,CAC7B,IAAU,EACV,QAA4X,EAC5X,KAAa;IAEb,QAAO,IAAI,CAAC,IAAI,CAAC,EAAE;QACjB,KAAK,MAAM,CAAC,CAAC,OAAO,IAAI,CAAC;QACzB,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,IAAI,EAAE,CAAU,CAAC;QACzD,KAAK,KAAK,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,GAAG,EAAE,CAAS,CAAC;QACtD,KAAK,eAAe,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,aAAa,EAAE,CAAmB,CAAC;QACpF,KAAK,QAAQ,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,MAAM,EAAE,CAAY,CAAC;QAC/D,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,IAAI,EAAE,CAAU,CAAC;QACzD,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,IAAI,EAAE,CAAU,CAAC;QACzD,KAAK,SAAS,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,OAAO,EAAE,CAAa,CAAC;QAClE,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,IAAI,EAAE,CAAU,CAAC;QACzD,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,IAAI,EAAE,CAAU,CAAC;QACzD,KAAK,WAAW,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,SAAS,EAAE,CAAe,CAAC;QACxE,KAAK,UAAU,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,QAAQ,EAAE,CAAc,CAAC;QACrE,KAAK,MAAM,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,IAAI,EAAE,CAAU,CAAC;QACzD,KAAK,SAAS,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,OAAO,EAAE,CAAa,CAAC;QAClE,KAAK,OAAO,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,KAAK,EAAE,CAAW,CAAC;QAC5D,KAAK,iBAAiB,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,eAAe,EAAE,CAAqB,CAAC;QAC1F,KAAK,eAAe,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,aAAa,EAAE,CAAmB,CAAC;QACpF,KAAK,KAAK,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,GAAG,EAAE,CAAS,CAAC;QACtD,KAAK,UAAU,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,QAAQ,EAAE,CAAc,CAAC;QACrE,KAAK,aAAa,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,WAAW,EAAE,CAAiB,CAAC;QAC9E,KAAK,WAAW,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,SAAS,EAAE,CAAe,CAAC;QACxE,KAAK,WAAW,CAAC,CAAC,OAAO,QAAQ,CAAC,KAAK,EAAE,IAAI,SAAS,EAAE,CAAe,CAAC;QACxE,OAAO,CAAC,CAAC,OAAO,IAAI,CAAC;KACtB;AACH,CAAC","file":"type.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/union-mode.d.ts b/igv_component/node_modules/apache-arrow/fb/union-mode.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..f57a08de9096e434069869dad0bee8164294a3f5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/union-mode.d.ts
@@ -0,0 +1,4 @@
+export declare enum UnionMode {
+    Sparse = 0,
+    Dense = 1
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/union-mode.d.ts.map b/igv_component/node_modules/apache-arrow/fb/union-mode.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..d5346ec7df40f83a253868466fc70ea581bb5731
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/union-mode.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/union-mode.ts"],"names":[],"mappings":"AAEA,oBAAY,SAAS;IACnB,MAAM,IAAI;IACV,KAAK,IAAI;CACV","file":"union-mode.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/union-mode.js b/igv_component/node_modules/apache-arrow/fb/union-mode.js
new file mode 100644
index 0000000000000000000000000000000000000000..04262792f7edc525aca9917e2b052f373dbe7ddc
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/union-mode.js
@@ -0,0 +1,11 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.UnionMode = void 0;
+var UnionMode;
+(function (UnionMode) {
+    UnionMode[UnionMode["Sparse"] = 0] = "Sparse";
+    UnionMode[UnionMode["Dense"] = 1] = "Dense";
+})(UnionMode = exports.UnionMode || (exports.UnionMode = {}));
+
+//# sourceMappingURL=union-mode.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/union-mode.js.map b/igv_component/node_modules/apache-arrow/fb/union-mode.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..5b175d078e8ef8fee090b714f5ba623e17c15232
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/union-mode.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/union-mode.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;AAErE,IAAY,SAGX;AAHD,WAAY,SAAS;IACnB,6CAAU,CAAA;IACV,2CAAS,CAAA;AACX,CAAC,EAHW,SAAS,GAAT,iBAAS,KAAT,iBAAS,QAGpB","file":"union-mode.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/union-mode.mjs b/igv_component/node_modules/apache-arrow/fb/union-mode.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..b5a131e2fa52fc42b6bbde0e547846415961e38d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/union-mode.mjs
@@ -0,0 +1,8 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+export var UnionMode;
+(function (UnionMode) {
+    UnionMode[UnionMode["Sparse"] = 0] = "Sparse";
+    UnionMode[UnionMode["Dense"] = 1] = "Dense";
+})(UnionMode || (UnionMode = {}));
+
+//# sourceMappingURL=union-mode.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/union-mode.mjs.map b/igv_component/node_modules/apache-arrow/fb/union-mode.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..9d6a1e805ae220816d0b983591e8a4654f319ea7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/union-mode.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/union-mode.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,MAAM,CAAN,IAAY,SAGX;AAHD,WAAY,SAAS;IACnB,6CAAU,CAAA;IACV,2CAAS,CAAA;AACX,CAAC,EAHW,SAAS,KAAT,SAAS,QAGpB","file":"union-mode.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/union.d.ts b/igv_component/node_modules/apache-arrow/fb/union.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..645dcae5ee99c0651c0877b8db1f6353ec2db356
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/union.d.ts
@@ -0,0 +1,30 @@
+import * as flatbuffers from 'flatbuffers';
+import { UnionMode } from './union-mode.js';
+/**
+ * A union is a complex type with children in Field
+ * By default ids in the type vector refer to the offsets in the children
+ * optionally typeIds provides an indirection between the child offset and the type id
+ * for each child `typeIds[offset]` is the id used in the type vector
+ */
+export declare class Union {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Union;
+    static getRootAsUnion(bb: flatbuffers.ByteBuffer, obj?: Union): Union;
+    static getSizePrefixedRootAsUnion(bb: flatbuffers.ByteBuffer, obj?: Union): Union;
+    mode(): UnionMode;
+    typeIds(index: number): number | null;
+    typeIdsLength(): number;
+    typeIdsArray(): Int32Array | null;
+    static startUnion(builder: flatbuffers.Builder): void;
+    static addMode(builder: flatbuffers.Builder, mode: UnionMode): void;
+    static addTypeIds(builder: flatbuffers.Builder, typeIdsOffset: flatbuffers.Offset): void;
+    static createTypeIdsVector(builder: flatbuffers.Builder, data: number[] | Int32Array): flatbuffers.Offset;
+    /**
+     * @deprecated This Uint8Array overload will be removed in the future.
+     */
+    static createTypeIdsVector(builder: flatbuffers.Builder, data: number[] | Uint8Array): flatbuffers.Offset;
+    static startTypeIdsVector(builder: flatbuffers.Builder, numElems: number): void;
+    static endUnion(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createUnion(builder: flatbuffers.Builder, mode: UnionMode, typeIdsOffset: flatbuffers.Offset): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/union.d.ts.map b/igv_component/node_modules/apache-arrow/fb/union.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..0c32bd51f781f6b67169ea4d1fb282e2fa5f85ea
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/union.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/union.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,SAAS,EAAE,MAAM,iBAAiB,CAAC;AAG5C;;;;;GAKG;AACH,qBAAa,KAAK;IAChB,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,KAAK;IAMjD,MAAM,CAAC,cAAc,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,KAAK,GAAE,KAAK;IAIlE,MAAM,CAAC,0BAA0B,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,KAAK,GAAE,KAAK;IAK9E,IAAI,IAAG,SAAS;IAKhB,OAAO,CAAC,KAAK,EAAE,MAAM,GAAE,MAAM,GAAC,IAAI;IAKlC,aAAa,IAAG,MAAM;IAKtB,YAAY,IAAG,UAAU,GAAC,IAAI;IAK9B,MAAM,CAAC,UAAU,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI7C,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,SAAS;IAI1D,MAAM,CAAC,UAAU,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,aAAa,EAAC,WAAW,CAAC,MAAM;IAI/E,MAAM,CAAC,mBAAmB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,MAAM,EAAE,GAAC,UAAU,GAAE,WAAW,CAAC,MAAM;IACpG;;OAEG;IACH,MAAM,CAAC,mBAAmB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,MAAM,EAAE,GAAC,UAAU,GAAE,WAAW,CAAC,MAAM;IASpG,MAAM,CAAC,kBAAkB,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,QAAQ,EAAC,MAAM;IAItE,MAAM,CAAC,QAAQ,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAK/D,MAAM,CAAC,WAAW,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,EAAE,IAAI,EAAC,SAAS,EAAE,aAAa,EAAC,WAAW,CAAC,MAAM,GAAE,WAAW,CAAC,MAAM;CAMnH","file":"union.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/union.js b/igv_component/node_modules/apache-arrow/fb/union.js
new file mode 100644
index 0000000000000000000000000000000000000000..c665ddc8f08e4722602cd7d00d7c5d08bbeae37d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/union.js
@@ -0,0 +1,79 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Union = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const union_mode_js_1 = require("./union-mode.js");
+/**
+ * A union is a complex type with children in Field
+ * By default ids in the type vector refer to the offsets in the children
+ * optionally typeIds provides an indirection between the child offset and the type id
+ * for each child `typeIds[offset]` is the id used in the type vector
+ */
+class Union {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsUnion(bb, obj) {
+        return (obj || new Union()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsUnion(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Union()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    mode() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : union_mode_js_1.UnionMode.Sparse;
+    }
+    typeIds(index) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.readInt32(this.bb.__vector(this.bb_pos + offset) + index * 4) : 0;
+    }
+    typeIdsLength() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    typeIdsArray() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? new Int32Array(this.bb.bytes().buffer, this.bb.bytes().byteOffset + this.bb.__vector(this.bb_pos + offset), this.bb.__vector_len(this.bb_pos + offset)) : null;
+    }
+    static startUnion(builder) {
+        builder.startObject(2);
+    }
+    static addMode(builder, mode) {
+        builder.addFieldInt16(0, mode, union_mode_js_1.UnionMode.Sparse);
+    }
+    static addTypeIds(builder, typeIdsOffset) {
+        builder.addFieldOffset(1, typeIdsOffset, 0);
+    }
+    static createTypeIdsVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addInt32(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startTypeIdsVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static endUnion(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createUnion(builder, mode, typeIdsOffset) {
+        Union.startUnion(builder);
+        Union.addMode(builder, mode);
+        Union.addTypeIds(builder, typeIdsOffset);
+        return Union.endUnion(builder);
+    }
+}
+exports.Union = Union;
+
+//# sourceMappingURL=union.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/union.js.map b/igv_component/node_modules/apache-arrow/fb/union.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..35cf2e86b73be35d96c2564884a691a54e14e945
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/union.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/union.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C,mDAA4C;AAG5C;;;;;GAKG;AACH,MAAa,KAAK;IAAlB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA4Eb,CAAC;IA3ED,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,EAAyB,EAAE,GAAU;QACzD,OAAO,CAAC,GAAG,IAAI,IAAI,KAAK,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACtF,CAAC;IAED,MAAM,CAAC,0BAA0B,CAAC,EAAyB,EAAE,GAAU;QACrE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,KAAK,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACtF,CAAC;IAED,IAAI;QACF,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,yBAAS,CAAC,MAAM,CAAC;IAC9E,CAAC;IAED,OAAO,CAAC,KAAa;QACnB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAC9F,CAAC;IAED,aAAa;QACX,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED,YAAY;QACV,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,UAAU,CAAC,IAAI,CAAC,EAAG,CAAC,KAAK,EAAE,CAAC,MAAM,EAAE,IAAI,CAAC,EAAG,CAAC,KAAK,EAAE,CAAC,UAAU,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACrL,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B;QAC3C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,IAAc;QACxD,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,IAAI,EAAE,yBAAS,CAAC,MAAM,CAAC,CAAC;IACnD,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B,EAAE,aAAgC;QAC7E,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,aAAa,EAAE,CAAC,CAAC,CAAC;IAC9C,CAAC;IAOD,MAAM,CAAC,mBAAmB,CAAC,OAA2B,EAAE,IAAmC;QACzF,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACvC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACzC,OAAO,CAAC,QAAQ,CAAC,IAAI,CAAC,CAAC,CAAE,CAAC,CAAC;SAC5B;QACD,OAAO,OAAO,CAAC,SAAS,EAAE,CAAC;IAC7B,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B,EAAE,QAAe;QACpE,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACtC,CAAC;IAED,MAAM,CAAC,QAAQ,CAAC,OAA2B;QACzC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,IAAc,EAAE,aAAgC;QAC9F,KAAK,CAAC,UAAU,CAAC,OAAO,CAAC,CAAC;QAC1B,KAAK,CAAC,OAAO,CAAC,OAAO,EAAE,IAAI,CAAC,CAAC;QAC7B,KAAK,CAAC,UAAU,CAAC,OAAO,EAAE,aAAa,CAAC,CAAC;QACzC,OAAO,KAAK,CAAC,QAAQ,CAAC,OAAO,CAAC,CAAC;IACjC,CAAC;CACA;AA9ED,sBA8EC","file":"union.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/union.mjs b/igv_component/node_modules/apache-arrow/fb/union.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..bc1d74e8a60c1091d80be605052a9b670bb595d2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/union.mjs
@@ -0,0 +1,74 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+import { UnionMode } from './union-mode.mjs';
+/**
+ * A union is a complex type with children in Field
+ * By default ids in the type vector refer to the offsets in the children
+ * optionally typeIds provides an indirection between the child offset and the type id
+ * for each child `typeIds[offset]` is the id used in the type vector
+ */
+export class Union {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsUnion(bb, obj) {
+        return (obj || new Union()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsUnion(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Union()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    mode() {
+        const offset = this.bb.__offset(this.bb_pos, 4);
+        return offset ? this.bb.readInt16(this.bb_pos + offset) : UnionMode.Sparse;
+    }
+    typeIds(index) {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.readInt32(this.bb.__vector(this.bb_pos + offset) + index * 4) : 0;
+    }
+    typeIdsLength() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? this.bb.__vector_len(this.bb_pos + offset) : 0;
+    }
+    typeIdsArray() {
+        const offset = this.bb.__offset(this.bb_pos, 6);
+        return offset ? new Int32Array(this.bb.bytes().buffer, this.bb.bytes().byteOffset + this.bb.__vector(this.bb_pos + offset), this.bb.__vector_len(this.bb_pos + offset)) : null;
+    }
+    static startUnion(builder) {
+        builder.startObject(2);
+    }
+    static addMode(builder, mode) {
+        builder.addFieldInt16(0, mode, UnionMode.Sparse);
+    }
+    static addTypeIds(builder, typeIdsOffset) {
+        builder.addFieldOffset(1, typeIdsOffset, 0);
+    }
+    static createTypeIdsVector(builder, data) {
+        builder.startVector(4, data.length, 4);
+        for (let i = data.length - 1; i >= 0; i--) {
+            builder.addInt32(data[i]);
+        }
+        return builder.endVector();
+    }
+    static startTypeIdsVector(builder, numElems) {
+        builder.startVector(4, numElems, 4);
+    }
+    static endUnion(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createUnion(builder, mode, typeIdsOffset) {
+        Union.startUnion(builder);
+        Union.addMode(builder, mode);
+        Union.addTypeIds(builder, typeIdsOffset);
+        return Union.endUnion(builder);
+    }
+}
+
+//# sourceMappingURL=union.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/union.mjs.map b/igv_component/node_modules/apache-arrow/fb/union.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..242ce9b84f843641b379b8d4015f359d5f936e25
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/union.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/union.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,EAAE,SAAS,EAAE,MAAM,iBAAiB,CAAC;AAG5C;;;;;GAKG;AACH,MAAM,OAAO,KAAK;IAAlB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA4Eb,CAAC;IA3ED,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,cAAc,CAAC,EAAyB,EAAE,GAAU;QACzD,OAAO,CAAC,GAAG,IAAI,IAAI,KAAK,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACtF,CAAC;IAED,MAAM,CAAC,0BAA0B,CAAC,EAAyB,EAAE,GAAU;QACrE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,KAAK,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACtF,CAAC;IAED,IAAI;QACF,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,SAAS,CAAC,MAAM,CAAC;IAC9E,CAAC;IAED,OAAO,CAAC,KAAa;QACnB,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,SAAS,CAAC,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,GAAG,KAAK,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAC9F,CAAC;IAED,aAAa;QACX,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;IAClE,CAAC;IAED,YAAY;QACV,MAAM,MAAM,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACjD,OAAO,MAAM,CAAC,CAAC,CAAC,IAAI,UAAU,CAAC,IAAI,CAAC,EAAG,CAAC,KAAK,EAAE,CAAC,MAAM,EAAE,IAAI,CAAC,EAAG,CAAC,KAAK,EAAE,CAAC,UAAU,GAAG,IAAI,CAAC,EAAG,CAAC,QAAQ,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,IAAI,CAAC,EAAG,CAAC,YAAY,CAAC,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;IACrL,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B;QAC3C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B,EAAE,IAAc;QACxD,OAAO,CAAC,aAAa,CAAC,CAAC,EAAE,IAAI,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC;IACnD,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B,EAAE,aAAgC;QAC7E,OAAO,CAAC,cAAc,CAAC,CAAC,EAAE,aAAa,EAAE,CAAC,CAAC,CAAC;IAC9C,CAAC;IAOD,MAAM,CAAC,mBAAmB,CAAC,OAA2B,EAAE,IAAmC;QACzF,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QACvC,KAAK,IAAI,CAAC,GAAG,IAAI,CAAC,MAAM,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,EAAE;YACzC,OAAO,CAAC,QAAQ,CAAC,IAAI,CAAC,CAAC,CAAE,CAAC,CAAC;SAC5B;QACD,OAAO,OAAO,CAAC,SAAS,EAAE,CAAC;IAC7B,CAAC;IAED,MAAM,CAAC,kBAAkB,CAAC,OAA2B,EAAE,QAAe;QACpE,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,QAAQ,EAAE,CAAC,CAAC,CAAC;IACtC,CAAC;IAED,MAAM,CAAC,QAAQ,CAAC,OAA2B;QACzC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,WAAW,CAAC,OAA2B,EAAE,IAAc,EAAE,aAAgC;QAC9F,KAAK,CAAC,UAAU,CAAC,OAAO,CAAC,CAAC;QAC1B,KAAK,CAAC,OAAO,CAAC,OAAO,EAAE,IAAI,CAAC,CAAC;QAC7B,KAAK,CAAC,UAAU,CAAC,OAAO,EAAE,aAAa,CAAC,CAAC;QACzC,OAAO,KAAK,CAAC,QAAQ,CAAC,OAAO,CAAC,CAAC;IACjC,CAAC;CACA","file":"union.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/utf8.d.ts b/igv_component/node_modules/apache-arrow/fb/utf8.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..3acfcea2e10e2005145a24e3ab9bf8684e8c74c3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/utf8.d.ts
@@ -0,0 +1,14 @@
+import * as flatbuffers from 'flatbuffers';
+/**
+ * Unicode with UTF-8 encoding
+ */
+export declare class Utf8 {
+    bb: flatbuffers.ByteBuffer | null;
+    bb_pos: number;
+    __init(i: number, bb: flatbuffers.ByteBuffer): Utf8;
+    static getRootAsUtf8(bb: flatbuffers.ByteBuffer, obj?: Utf8): Utf8;
+    static getSizePrefixedRootAsUtf8(bb: flatbuffers.ByteBuffer, obj?: Utf8): Utf8;
+    static startUtf8(builder: flatbuffers.Builder): void;
+    static endUtf8(builder: flatbuffers.Builder): flatbuffers.Offset;
+    static createUtf8(builder: flatbuffers.Builder): flatbuffers.Offset;
+}
diff --git a/igv_component/node_modules/apache-arrow/fb/utf8.d.ts.map b/igv_component/node_modules/apache-arrow/fb/utf8.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..5504efd7c7a972a09a191cfb9573babda63040aa
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/utf8.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/utf8.ts"],"names":[],"mappings":"AAEA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;GAEG;AACH,qBAAa,IAAI;IACf,EAAE,EAAE,WAAW,CAAC,UAAU,GAAC,IAAI,CAAQ;IACvC,MAAM,SAAK;IACb,MAAM,CAAC,CAAC,EAAC,MAAM,EAAE,EAAE,EAAC,WAAW,CAAC,UAAU,GAAE,IAAI;IAMhD,MAAM,CAAC,aAAa,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,IAAI,GAAE,IAAI;IAI/D,MAAM,CAAC,yBAAyB,CAAC,EAAE,EAAC,WAAW,CAAC,UAAU,EAAE,GAAG,CAAC,EAAC,IAAI,GAAE,IAAI;IAK3E,MAAM,CAAC,SAAS,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO;IAI5C,MAAM,CAAC,OAAO,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;IAK9D,MAAM,CAAC,UAAU,CAAC,OAAO,EAAC,WAAW,CAAC,OAAO,GAAE,WAAW,CAAC,MAAM;CAIhE","file":"utf8.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/utf8.js b/igv_component/node_modules/apache-arrow/fb/utf8.js
new file mode 100644
index 0000000000000000000000000000000000000000..4534da059fca0e83d3a8b51745329f986b3588e7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/utf8.js
@@ -0,0 +1,41 @@
+"use strict";
+// automatically generated by the FlatBuffers compiler, do not modify
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Utf8 = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+/**
+ * Unicode with UTF-8 encoding
+ */
+class Utf8 {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsUtf8(bb, obj) {
+        return (obj || new Utf8()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsUtf8(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Utf8()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startUtf8(builder) {
+        builder.startObject(0);
+    }
+    static endUtf8(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createUtf8(builder) {
+        Utf8.startUtf8(builder);
+        return Utf8.endUtf8(builder);
+    }
+}
+exports.Utf8 = Utf8;
+
+//# sourceMappingURL=utf8.js.map
diff --git a/igv_component/node_modules/apache-arrow/fb/utf8.js.map b/igv_component/node_modules/apache-arrow/fb/utf8.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..26bdac71fb693ad6a119f5fc7981b6ab16050ed0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/utf8.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/utf8.ts"],"names":[],"mappings":";AAAA,qEAAqE;;;;AAErE,iEAA2C;AAE3C;;GAEG;AACH,MAAa,IAAI;IAAjB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,EAAyB,EAAE,GAAS;QACvD,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,EAAyB,EAAE,GAAS;QACnE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B;QACxC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B;QAC3C,IAAI,CAAC,SAAS,CAAC,OAAO,CAAC,CAAC;QACxB,OAAO,IAAI,CAAC,OAAO,CAAC,OAAO,CAAC,CAAC;IAC/B,CAAC;CACA;AA/BD,oBA+BC","file":"utf8.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/fb/utf8.mjs b/igv_component/node_modules/apache-arrow/fb/utf8.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..404837dddbc57ed0d4d94892570098b4626d6002
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/utf8.mjs
@@ -0,0 +1,36 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+import * as flatbuffers from 'flatbuffers';
+/**
+ * Unicode with UTF-8 encoding
+ */
+export class Utf8 {
+    constructor() {
+        this.bb = null;
+        this.bb_pos = 0;
+    }
+    __init(i, bb) {
+        this.bb_pos = i;
+        this.bb = bb;
+        return this;
+    }
+    static getRootAsUtf8(bb, obj) {
+        return (obj || new Utf8()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static getSizePrefixedRootAsUtf8(bb, obj) {
+        bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+        return (obj || new Utf8()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+    }
+    static startUtf8(builder) {
+        builder.startObject(0);
+    }
+    static endUtf8(builder) {
+        const offset = builder.endObject();
+        return offset;
+    }
+    static createUtf8(builder) {
+        Utf8.startUtf8(builder);
+        return Utf8.endUtf8(builder);
+    }
+}
+
+//# sourceMappingURL=utf8.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/fb/utf8.mjs.map b/igv_component/node_modules/apache-arrow/fb/utf8.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..c86aa7434229e580cd92f4c6a1f2e6e3f4682258
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/fb/utf8.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["fb/utf8.ts"],"names":[],"mappings":"AAAA,qEAAqE;AAErE,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C;;GAEG;AACH,MAAM,OAAO,IAAI;IAAjB;QACE,OAAE,GAAgC,IAAI,CAAC;QACvC,WAAM,GAAG,CAAC,CAAC;IA6Bb,CAAC;IA5BD,MAAM,CAAC,CAAQ,EAAE,EAAyB;QACxC,IAAI,CAAC,MAAM,GAAG,CAAC,CAAC;QAChB,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QACb,OAAO,IAAI,CAAC;IACd,CAAC;IAED,MAAM,CAAC,aAAa,CAAC,EAAyB,EAAE,GAAS;QACvD,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,yBAAyB,CAAC,EAAyB,EAAE,GAAS;QACnE,EAAE,CAAC,WAAW,CAAC,EAAE,CAAC,QAAQ,EAAE,GAAG,WAAW,CAAC,kBAAkB,CAAC,CAAC;QAC/D,OAAO,CAAC,GAAG,IAAI,IAAI,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,SAAS,CAAC,EAAE,CAAC,QAAQ,EAAE,CAAC,GAAG,EAAE,CAAC,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,MAAM,CAAC,SAAS,CAAC,OAA2B;QAC1C,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IAED,MAAM,CAAC,OAAO,CAAC,OAA2B;QACxC,MAAM,MAAM,GAAG,OAAO,CAAC,SAAS,EAAE,CAAC;QACnC,OAAO,MAAM,CAAC;IAChB,CAAC;IAED,MAAM,CAAC,UAAU,CAAC,OAA2B;QAC3C,IAAI,CAAC,SAAS,CAAC,OAAO,CAAC,CAAC;QACxB,OAAO,IAAI,CAAC,OAAO,CAAC,OAAO,CAAC,CAAC;IAC/B,CAAC;CACA","file":"utf8.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/interfaces.d.ts b/igv_component/node_modules/apache-arrow/interfaces.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..c85423ce2a14ce881cae6e66f8239fd0352025a1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/interfaces.d.ts
@@ -0,0 +1,245 @@
+import * as type from './type.js';
+import type { Type } from './enum.js';
+import type { DataType } from './type.js';
+import type { Builder } from './builder.js';
+import type { BuilderOptions } from './builder.js';
+import type { BoolBuilder } from './builder/bool.js';
+import type { NullBuilder } from './builder/null.js';
+import type { DateBuilder, DateDayBuilder, DateMillisecondBuilder } from './builder/date.js';
+import type { DecimalBuilder } from './builder/decimal.js';
+import type { DictionaryBuilder } from './builder/dictionary.js';
+import type { FixedSizeBinaryBuilder } from './builder/fixedsizebinary.js';
+import type { FloatBuilder, Float16Builder, Float32Builder, Float64Builder } from './builder/float.js';
+import type { IntBuilder, Int8Builder, Int16Builder, Int32Builder, Int64Builder, Uint8Builder, Uint16Builder, Uint32Builder, Uint64Builder } from './builder/int.js';
+import type { TimeBuilder, TimeSecondBuilder, TimeMillisecondBuilder, TimeMicrosecondBuilder, TimeNanosecondBuilder } from './builder/time.js';
+import type { TimestampBuilder, TimestampSecondBuilder, TimestampMillisecondBuilder, TimestampMicrosecondBuilder, TimestampNanosecondBuilder } from './builder/timestamp.js';
+import type { IntervalBuilder, IntervalDayTimeBuilder, IntervalYearMonthBuilder } from './builder/interval.js';
+import type { Utf8Builder } from './builder/utf8.js';
+import type { BinaryBuilder } from './builder/binary.js';
+import type { ListBuilder } from './builder/list.js';
+import type { FixedSizeListBuilder } from './builder/fixedsizelist.js';
+import type { MapBuilder } from './builder/map.js';
+import type { StructBuilder } from './builder/struct.js';
+import type { UnionBuilder, SparseUnionBuilder, DenseUnionBuilder } from './builder/union.js';
+/** @ignore */ declare type FloatArray = Float32Array | Float64Array;
+/** @ignore */ declare type IntArray = Int8Array | Int16Array | Int32Array;
+/** @ignore */ declare type UintArray = Uint8Array | Uint16Array | Uint32Array | Uint8ClampedArray;
+/** @ignore */
+export declare type TypedArray = FloatArray | IntArray | UintArray;
+/** @ignore */
+export declare type BigIntArray = BigInt64Array | BigUint64Array;
+/** @ignore */
+export interface TypedArrayConstructor<T extends TypedArray> {
+    readonly prototype: T;
+    new (length?: number): T;
+    new (array: Iterable<number>): T;
+    new (buffer: ArrayBufferLike, byteOffset?: number, length?: number): T;
+    /**
+      * The size in bytes of each element in the array.
+      */
+    readonly BYTES_PER_ELEMENT: number;
+    /**
+      * Returns a new array from a set of elements.
+      * @param items A set of elements to include in the new array object.
+      */
+    of(...items: number[]): T;
+    /**
+      * Creates an array from an array-like or iterable object.
+      * @param arrayLike An array-like or iterable object to convert to an array.
+      * @param mapfn A mapping function to call on every element of the array.
+      * @param thisArg Value of 'this' used to invoke the mapfn.
+      */
+    from(arrayLike: ArrayLike<number>, mapfn?: (v: number, k: number) => number, thisArg?: any): T;
+    from<U>(arrayLike: ArrayLike<U>, mapfn: (v: U, k: number) => number, thisArg?: any): T;
+}
+/** @ignore */
+export interface BigIntArrayConstructor<T extends BigIntArray> {
+    readonly prototype: T;
+    new (length?: number): T;
+    new (array: Iterable<bigint>): T;
+    new (buffer: ArrayBufferLike, byteOffset?: number, length?: number): T;
+    /**
+      * The size in bytes of each element in the array.
+      */
+    readonly BYTES_PER_ELEMENT: number;
+    /**
+      * Returns a new array from a set of elements.
+      * @param items A set of elements to include in the new array object.
+      */
+    of(...items: bigint[]): T;
+    /**
+      * Creates an array from an array-like or iterable object.
+      * @param arrayLike An array-like or iterable object to convert to an array.
+      * @param mapfn A mapping function to call on every element of the array.
+      * @param thisArg Value of 'this' used to invoke the mapfn.
+      */
+    from(arrayLike: ArrayLike<bigint>, mapfn?: (v: bigint, k: number) => bigint, thisArg?: any): T;
+    from<U>(arrayLike: ArrayLike<U>, mapfn: (v: U, k: number) => bigint, thisArg?: any): T;
+}
+/** @ignore */
+export declare type BuilderCtorArgs<T extends BuilderType<R, any>, R extends DataType = any, TArgs extends any[] = any[], TCtor extends new (type: R, ...args: TArgs) => T = new (type: R, ...args: TArgs) => T> = TCtor extends new (type: R, ...args: infer TArgs) => T ? TArgs : never;
+/**
+ * Obtain the constructor function of an instance type
+ * @ignore
+ */
+export declare type ConstructorType<T, TCtor extends new (...args: any[]) => T = new (...args: any[]) => T> = TCtor extends new (...args: any[]) => T ? TCtor : never;
+/** @ignore */
+export declare type BuilderCtorType<T extends BuilderType<R, any>, R extends DataType = any, TCtor extends new (options: BuilderOptions<R, any>) => T = new (options: BuilderOptions<R, any>) => T> = TCtor extends new (options: BuilderOptions<R, any>) => T ? TCtor : never;
+/** @ignore */
+export declare type BuilderType<T extends Type | DataType = any, TNull = any> = T extends Type ? TypeToBuilder<T, TNull> : T extends DataType ? DataTypeToBuilder<T, TNull> : Builder<any, TNull>;
+/** @ignore */
+export declare type BuilderCtor<T extends Type | DataType = any> = T extends Type ? BuilderCtorType<BuilderType<T>> : T extends DataType ? BuilderCtorType<BuilderType<T>> : BuilderCtorType<Builder>;
+/** @ignore */
+export declare type DataTypeCtor<T extends Type | DataType = any> = T extends DataType ? ConstructorType<T> : T extends Type ? ConstructorType<TypeToDataType<T>> : never;
+/** @ignore */
+export declare type TypedArrayDataType<T extends TypedArray | BigIntArray> = T extends Int8Array ? type.Int8 : T extends Int16Array ? type.Int16 : T extends Int32Array ? type.Int32 : T extends BigInt64Array ? type.Int64 : T extends Uint8Array ? type.Uint8 : T extends Uint8ClampedArray ? type.Uint8 : T extends Uint16Array ? type.Uint16 : T extends Uint32Array ? type.Uint32 : T extends BigUint64Array ? type.Uint64 : T extends Float32Array ? type.Float32 : T extends Float64Array ? type.Float64 : never;
+/** @ignore */
+export declare type JavaScriptDataType<T> = JavaScriptArrayDataType<T[]>;
+/** @ignore */
+export declare type JavaScriptArrayDataType<T extends readonly unknown[]> = T extends readonly (null | undefined)[] ? type.Null : T extends readonly (null | undefined | boolean)[] ? type.Bool : T extends readonly (null | undefined | string)[] ? type.Dictionary<type.Utf8, type.Int32> : T extends readonly (null | undefined | Date)[] ? type.Date_ : T extends readonly (null | undefined | bigint)[] ? type.Int64 : T extends readonly (null | undefined | number)[] ? type.Float64 : T extends readonly (null | undefined | readonly (infer U)[])[] ? type.List<JavaScriptDataType<U>> : T extends readonly (null | undefined | Record<string, unknown>)[] ? T extends readonly (null | undefined | infer U)[] ? type.Struct<{
+    [P in keyof U]: JavaScriptDataType<U[P]>;
+}> : never : never;
+/** @ignore */
+export declare type ArrayDataType<T> = T extends TypedArray | BigIntArray ? TypedArrayDataType<T> : T extends readonly unknown[] ? JavaScriptArrayDataType<T> : never;
+/** @ignore */
+export declare type TypeToDataType<T extends Type> = {
+    [key: number]: type.DataType;
+    [Type.Null]: type.Null;
+    [Type.Bool]: type.Bool;
+    [Type.Int]: type.Int;
+    [Type.Int16]: type.Int16;
+    [Type.Int32]: type.Int32;
+    [Type.Int64]: type.Int64;
+    [Type.Uint8]: type.Uint8;
+    [Type.Uint16]: type.Uint16;
+    [Type.Uint32]: type.Uint32;
+    [Type.Uint64]: type.Uint64;
+    [Type.Int8]: type.Int8;
+    [Type.Float16]: type.Float16;
+    [Type.Float32]: type.Float32;
+    [Type.Float64]: type.Float64;
+    [Type.Float]: type.Float;
+    [Type.Utf8]: type.Utf8;
+    [Type.Binary]: type.Binary;
+    [Type.FixedSizeBinary]: type.FixedSizeBinary;
+    [Type.Date]: type.Date_;
+    [Type.DateDay]: type.DateDay;
+    [Type.DateMillisecond]: type.DateMillisecond;
+    [Type.Timestamp]: type.Timestamp;
+    [Type.TimestampSecond]: type.TimestampSecond;
+    [Type.TimestampMillisecond]: type.TimestampMillisecond;
+    [Type.TimestampMicrosecond]: type.TimestampMicrosecond;
+    [Type.TimestampNanosecond]: type.TimestampNanosecond;
+    [Type.Time]: type.Time;
+    [Type.TimeSecond]: type.TimeSecond;
+    [Type.TimeMillisecond]: type.TimeMillisecond;
+    [Type.TimeMicrosecond]: type.TimeMicrosecond;
+    [Type.TimeNanosecond]: type.TimeNanosecond;
+    [Type.Decimal]: type.Decimal;
+    [Type.Union]: type.Union;
+    [Type.DenseUnion]: type.DenseUnion;
+    [Type.SparseUnion]: type.SparseUnion;
+    [Type.Interval]: type.Interval;
+    [Type.IntervalDayTime]: type.IntervalDayTime;
+    [Type.IntervalYearMonth]: type.IntervalYearMonth;
+    [Type.Map]: type.Map_;
+    [Type.List]: type.List;
+    [Type.Struct]: type.Struct;
+    [Type.Dictionary]: type.Dictionary;
+    [Type.FixedSizeList]: type.FixedSizeList;
+}[T];
+/** @ignore */
+declare type TypeToBuilder<T extends Type = any, TNull = any> = {
+    [key: number]: Builder;
+    [Type.Null]: NullBuilder<TNull>;
+    [Type.Bool]: BoolBuilder<TNull>;
+    [Type.Int8]: Int8Builder<TNull>;
+    [Type.Int16]: Int16Builder<TNull>;
+    [Type.Int32]: Int32Builder<TNull>;
+    [Type.Int64]: Int64Builder<TNull>;
+    [Type.Uint8]: Uint8Builder<TNull>;
+    [Type.Uint16]: Uint16Builder<TNull>;
+    [Type.Uint32]: Uint32Builder<TNull>;
+    [Type.Uint64]: Uint64Builder<TNull>;
+    [Type.Int]: IntBuilder<any, TNull>;
+    [Type.Float16]: Float16Builder<TNull>;
+    [Type.Float32]: Float32Builder<TNull>;
+    [Type.Float64]: Float64Builder<TNull>;
+    [Type.Float]: FloatBuilder<any, TNull>;
+    [Type.Utf8]: Utf8Builder<TNull>;
+    [Type.Binary]: BinaryBuilder<TNull>;
+    [Type.FixedSizeBinary]: FixedSizeBinaryBuilder<TNull>;
+    [Type.Date]: DateBuilder<any, TNull>;
+    [Type.DateDay]: DateDayBuilder<TNull>;
+    [Type.DateMillisecond]: DateMillisecondBuilder<TNull>;
+    [Type.Timestamp]: TimestampBuilder<any, TNull>;
+    [Type.TimestampSecond]: TimestampSecondBuilder<TNull>;
+    [Type.TimestampMillisecond]: TimestampMillisecondBuilder<TNull>;
+    [Type.TimestampMicrosecond]: TimestampMicrosecondBuilder<TNull>;
+    [Type.TimestampNanosecond]: TimestampNanosecondBuilder<TNull>;
+    [Type.Time]: TimeBuilder<any, TNull>;
+    [Type.TimeSecond]: TimeSecondBuilder<TNull>;
+    [Type.TimeMillisecond]: TimeMillisecondBuilder<TNull>;
+    [Type.TimeMicrosecond]: TimeMicrosecondBuilder<TNull>;
+    [Type.TimeNanosecond]: TimeNanosecondBuilder<TNull>;
+    [Type.Decimal]: DecimalBuilder<TNull>;
+    [Type.Union]: UnionBuilder<any, TNull>;
+    [Type.DenseUnion]: DenseUnionBuilder<any, TNull>;
+    [Type.SparseUnion]: SparseUnionBuilder<any, TNull>;
+    [Type.Interval]: IntervalBuilder<any, TNull>;
+    [Type.IntervalDayTime]: IntervalDayTimeBuilder<TNull>;
+    [Type.IntervalYearMonth]: IntervalYearMonthBuilder<TNull>;
+    [Type.Map]: MapBuilder<any, any, TNull>;
+    [Type.List]: ListBuilder<any, TNull>;
+    [Type.Struct]: StructBuilder<any, TNull>;
+    [Type.Dictionary]: DictionaryBuilder<any, TNull>;
+    [Type.FixedSizeList]: FixedSizeListBuilder<any, TNull>;
+}[T];
+/** @ignore */
+declare type DataTypeToBuilder<T extends DataType = any, TNull = any> = {
+    [key: number]: Builder<any, TNull>;
+    [Type.Null]: T extends type.Null ? NullBuilder<TNull> : never;
+    [Type.Bool]: T extends type.Bool ? BoolBuilder<TNull> : never;
+    [Type.Int8]: T extends type.Int8 ? Int8Builder<TNull> : never;
+    [Type.Int16]: T extends type.Int16 ? Int16Builder<TNull> : never;
+    [Type.Int32]: T extends type.Int32 ? Int32Builder<TNull> : never;
+    [Type.Int64]: T extends type.Int64 ? Int64Builder<TNull> : never;
+    [Type.Uint8]: T extends type.Uint8 ? Uint8Builder<TNull> : never;
+    [Type.Uint16]: T extends type.Uint16 ? Uint16Builder<TNull> : never;
+    [Type.Uint32]: T extends type.Uint32 ? Uint32Builder<TNull> : never;
+    [Type.Uint64]: T extends type.Uint64 ? Uint64Builder<TNull> : never;
+    [Type.Int]: T extends type.Int ? IntBuilder<T, TNull> : never;
+    [Type.Float16]: T extends type.Float16 ? Float16Builder<TNull> : never;
+    [Type.Float32]: T extends type.Float32 ? Float32Builder<TNull> : never;
+    [Type.Float64]: T extends type.Float64 ? Float64Builder<TNull> : never;
+    [Type.Float]: T extends type.Float ? FloatBuilder<T, TNull> : never;
+    [Type.Utf8]: T extends type.Utf8 ? Utf8Builder<TNull> : never;
+    [Type.Binary]: T extends type.Binary ? BinaryBuilder<TNull> : never;
+    [Type.FixedSizeBinary]: T extends type.FixedSizeBinary ? FixedSizeBinaryBuilder<TNull> : never;
+    [Type.Date]: T extends type.Date_ ? DateBuilder<T, TNull> : never;
+    [Type.DateDay]: T extends type.DateDay ? DateDayBuilder<TNull> : never;
+    [Type.DateMillisecond]: T extends type.DateMillisecond ? DateMillisecondBuilder<TNull> : never;
+    [Type.Timestamp]: T extends type.Timestamp ? TimestampBuilder<T, TNull> : never;
+    [Type.TimestampSecond]: T extends type.TimestampSecond ? TimestampSecondBuilder<TNull> : never;
+    [Type.TimestampMillisecond]: T extends type.TimestampMillisecond ? TimestampMillisecondBuilder<TNull> : never;
+    [Type.TimestampMicrosecond]: T extends type.TimestampMicrosecond ? TimestampMicrosecondBuilder<TNull> : never;
+    [Type.TimestampNanosecond]: T extends type.TimestampNanosecond ? TimestampNanosecondBuilder<TNull> : never;
+    [Type.Time]: T extends type.Time ? TimeBuilder<T, TNull> : never;
+    [Type.TimeSecond]: T extends type.TimeSecond ? TimeSecondBuilder<TNull> : never;
+    [Type.TimeMillisecond]: T extends type.TimeMillisecond ? TimeMillisecondBuilder<TNull> : never;
+    [Type.TimeMicrosecond]: T extends type.TimeMicrosecond ? TimeMicrosecondBuilder<TNull> : never;
+    [Type.TimeNanosecond]: T extends type.TimeNanosecond ? TimeNanosecondBuilder<TNull> : never;
+    [Type.Decimal]: T extends type.Decimal ? DecimalBuilder<TNull> : never;
+    [Type.Union]: T extends type.Union ? UnionBuilder<T, TNull> : never;
+    [Type.DenseUnion]: T extends type.DenseUnion ? DenseUnionBuilder<T, TNull> : never;
+    [Type.SparseUnion]: T extends type.SparseUnion ? SparseUnionBuilder<T, TNull> : never;
+    [Type.Interval]: T extends type.Interval ? IntervalBuilder<T, TNull> : never;
+    [Type.IntervalDayTime]: T extends type.IntervalDayTime ? IntervalDayTimeBuilder<TNull> : never;
+    [Type.IntervalYearMonth]: T extends type.IntervalYearMonth ? IntervalYearMonthBuilder<TNull> : never;
+    [Type.Map]: T extends type.Map_ ? MapBuilder<T['keyType'], T['valueType'], TNull> : never;
+    [Type.List]: T extends type.List ? ListBuilder<T['valueType'], TNull> : never;
+    [Type.Struct]: T extends type.Struct ? StructBuilder<T['dataTypes'], TNull> : never;
+    [Type.Dictionary]: T extends type.Dictionary ? DictionaryBuilder<T, TNull> : never;
+    [Type.FixedSizeList]: T extends type.FixedSizeList ? FixedSizeListBuilder<T['valueType'], TNull> : never;
+}[T['TType']];
+export {};
diff --git a/igv_component/node_modules/apache-arrow/interfaces.d.ts.map b/igv_component/node_modules/apache-arrow/interfaces.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..0c4e72718988d58ec8a08f4eaac11ec0e5650681
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/interfaces.d.ts.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/interfaces.js b/igv_component/node_modules/apache-arrow/interfaces.js
new file mode 100644
index 0000000000000000000000000000000000000000..38626291790c2996cf83b4adc08622ca6d23167a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/interfaces.js
@@ -0,0 +1,20 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+
+//# sourceMappingURL=interfaces.js.map
diff --git a/igv_component/node_modules/apache-arrow/interfaces.js.map b/igv_component/node_modules/apache-arrow/interfaces.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..6efe9322f4a83d3c48c2f544dbd67e212213e882
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/interfaces.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["interfaces.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB","file":"interfaces.js","sourceRoot":"src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/interfaces.mjs b/igv_component/node_modules/apache-arrow/interfaces.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..b2a92ac046c7b0eb7496d18fc0ea54fba10b1376
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/interfaces.mjs
@@ -0,0 +1,19 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+export {};
+
+//# sourceMappingURL=interfaces.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/interfaces.mjs.map b/igv_component/node_modules/apache-arrow/interfaces.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..c825e2a0966be94b175e14f29a420fe97c386976
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/interfaces.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["interfaces.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB","file":"interfaces.js","sourceRoot":"src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/adapters.d.ts b/igv_component/node_modules/apache-arrow/io/adapters.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e1a3614c941cec2da5757eb0da0d5d0367a8ead9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/adapters.d.ts
@@ -0,0 +1,24 @@
+/// <reference types="node" />
+/// <reference types="node" />
+/// <reference types="node" />
+/// <reference types="node" />
+import { ArrayBufferViewInput } from '../util/buffer.js';
+import { ReadableDOMStreamOptions } from './interfaces.js';
+declare type Uint8ArrayGenerator = Generator<Uint8Array, null, {
+    cmd: 'peek' | 'read';
+    size: number;
+}>;
+declare type AsyncUint8ArrayGenerator = AsyncGenerator<Uint8Array, null, {
+    cmd: 'peek' | 'read';
+    size: number;
+}>;
+/** @ignore */
+declare const _default: {
+    fromIterable<T extends ArrayBufferViewInput>(source: T | Iterable<T>): Uint8ArrayGenerator;
+    fromAsyncIterable<T_1 extends ArrayBufferViewInput>(source: AsyncIterable<T_1> | PromiseLike<T_1>): AsyncUint8ArrayGenerator;
+    fromDOMStream<T_2 extends ArrayBufferViewInput>(source: ReadableStream<T_2>): AsyncUint8ArrayGenerator;
+    fromNodeStream(stream: NodeJS.ReadableStream): AsyncUint8ArrayGenerator;
+    toDOMStream<T_3>(source: Iterable<T_3> | AsyncIterable<T_3>, options?: ReadableDOMStreamOptions): ReadableStream<T_3>;
+    toNodeStream<T_4>(source: Iterable<T_4> | AsyncIterable<T_4>, options?: import('stream').ReadableOptions): import('stream').Readable;
+};
+export default _default;
diff --git a/igv_component/node_modules/apache-arrow/io/adapters.d.ts.map b/igv_component/node_modules/apache-arrow/io/adapters.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..b65e3cb1de2de7c35e7020eaff1559fe3b349559
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/adapters.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/adapters.ts"],"names":[],"mappings":";;;;AAiBA,OAAO,EAGH,oBAAoB,EAGvB,MAAM,mBAAmB,CAAC;AAE3B,OAAO,EAAE,wBAAwB,EAAE,MAAM,iBAAiB,CAAC;AAE3D,aAAK,mBAAmB,GAAG,SAAS,CAAC,UAAU,EAAE,IAAI,EAAE;IAAE,GAAG,EAAE,MAAM,GAAG,MAAM,CAAC;IAAC,IAAI,EAAE,MAAM,CAAA;CAAE,CAAC,CAAC;AAC/F,aAAK,wBAAwB,GAAG,cAAc,CAAC,UAAU,EAAE,IAAI,EAAE;IAAE,GAAG,EAAE,MAAM,GAAG,MAAM,CAAC;IAAC,IAAI,EAAE,MAAM,CAAA;CAAE,CAAC,CAAC;AAEzG,cAAc;;2EAE6D,mBAAmB;wGAGI,wBAAwB;kFAG5C,wBAAwB;2BAG3E,qBAAqB,GAAG,wBAAwB;2EAIN,wBAAwB;4EAIvB,OAAO,QAAQ,EAAE,eAAe,GAAG,OAAO,QAAQ,EAAE,QAAQ;;AAlBlI,wBAqBE","file":"adapters.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/adapters.js b/igv_component/node_modules/apache-arrow/io/adapters.js
new file mode 100644
index 0000000000000000000000000000000000000000..60892a37bad4dfc532dde24ffb76c0b9412f9d6a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/adapters.js
@@ -0,0 +1,321 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+const tslib_1 = require("tslib");
+const buffer_js_1 = require("../util/buffer.js");
+/** @ignore */
+exports.default = {
+    fromIterable(source) {
+        return pump(fromIterable(source));
+    },
+    fromAsyncIterable(source) {
+        return pump(fromAsyncIterable(source));
+    },
+    fromDOMStream(source) {
+        return pump(fromDOMStream(source));
+    },
+    fromNodeStream(stream) {
+        return pump(fromNodeStream(stream));
+    },
+    // @ts-ignore
+    toDOMStream(source, options) {
+        throw new Error(`"toDOMStream" not available in this environment`);
+    },
+    // @ts-ignore
+    toNodeStream(source, options) {
+        throw new Error(`"toNodeStream" not available in this environment`);
+    },
+};
+/** @ignore */
+const pump = (iterator) => { iterator.next(); return iterator; };
+/** @ignore */
+function* fromIterable(source) {
+    let done, threw = false;
+    let buffers = [], buffer;
+    let cmd, size, bufferLength = 0;
+    function byteRange() {
+        if (cmd === 'peek') {
+            return (0, buffer_js_1.joinUint8Arrays)(buffers, size)[0];
+        }
+        [buffer, buffers, bufferLength] = (0, buffer_js_1.joinUint8Arrays)(buffers, size);
+        return buffer;
+    }
+    // Yield so the caller can inject the read command before creating the source Iterator
+    ({ cmd, size } = yield null);
+    // initialize the iterator
+    const it = (0, buffer_js_1.toUint8ArrayIterator)(source)[Symbol.iterator]();
+    try {
+        do {
+            // read the next value
+            ({ done, value: buffer } = Number.isNaN(size - bufferLength) ?
+                it.next() : it.next(size - bufferLength));
+            // if chunk is not null or empty, push it onto the queue
+            if (!done && buffer.byteLength > 0) {
+                buffers.push(buffer);
+                bufferLength += buffer.byteLength;
+            }
+            // If we have enough bytes in our buffer, yield chunks until we don't
+            if (done || size <= bufferLength) {
+                do {
+                    ({ cmd, size } = yield byteRange());
+                } while (size < bufferLength);
+            }
+        } while (!done);
+    }
+    catch (e) {
+        (threw = true) && (typeof it.throw === 'function') && (it.throw(e));
+    }
+    finally {
+        (threw === false) && (typeof it.return === 'function') && (it.return(null));
+    }
+    return null;
+}
+/** @ignore */
+function fromAsyncIterable(source) {
+    return tslib_1.__asyncGenerator(this, arguments, function* fromAsyncIterable_1() {
+        let done, threw = false;
+        let buffers = [], buffer;
+        let cmd, size, bufferLength = 0;
+        function byteRange() {
+            if (cmd === 'peek') {
+                return (0, buffer_js_1.joinUint8Arrays)(buffers, size)[0];
+            }
+            [buffer, buffers, bufferLength] = (0, buffer_js_1.joinUint8Arrays)(buffers, size);
+            return buffer;
+        }
+        // Yield so the caller can inject the read command before creating the source AsyncIterator
+        ({ cmd, size } = (yield yield tslib_1.__await(null)));
+        // initialize the iterator
+        const it = (0, buffer_js_1.toUint8ArrayAsyncIterator)(source)[Symbol.asyncIterator]();
+        try {
+            do {
+                // read the next value
+                ({ done, value: buffer } = Number.isNaN(size - bufferLength)
+                    ? yield tslib_1.__await(it.next())
+                    : yield tslib_1.__await(it.next(size - bufferLength)));
+                // if chunk is not null or empty, push it onto the queue
+                if (!done && buffer.byteLength > 0) {
+                    buffers.push(buffer);
+                    bufferLength += buffer.byteLength;
+                }
+                // If we have enough bytes in our buffer, yield chunks until we don't
+                if (done || size <= bufferLength) {
+                    do {
+                        ({ cmd, size } = yield yield tslib_1.__await(byteRange()));
+                    } while (size < bufferLength);
+                }
+            } while (!done);
+        }
+        catch (e) {
+            (threw = true) && (typeof it.throw === 'function') && (yield tslib_1.__await(it.throw(e)));
+        }
+        finally {
+            (threw === false) && (typeof it.return === 'function') && (yield tslib_1.__await(it.return(new Uint8Array(0))));
+        }
+        return yield tslib_1.__await(null);
+    });
+}
+// All this manual Uint8Array chunk management can be avoided if/when engines
+// add support for ArrayBuffer.transfer() or ArrayBuffer.prototype.realloc():
+// https://github.com/domenic/proposal-arraybuffer-transfer
+/** @ignore */
+function fromDOMStream(source) {
+    return tslib_1.__asyncGenerator(this, arguments, function* fromDOMStream_1() {
+        let done = false, threw = false;
+        let buffers = [], buffer;
+        let cmd, size, bufferLength = 0;
+        function byteRange() {
+            if (cmd === 'peek') {
+                return (0, buffer_js_1.joinUint8Arrays)(buffers, size)[0];
+            }
+            [buffer, buffers, bufferLength] = (0, buffer_js_1.joinUint8Arrays)(buffers, size);
+            return buffer;
+        }
+        // Yield so the caller can inject the read command before we establish the ReadableStream lock
+        ({ cmd, size } = yield yield tslib_1.__await(null));
+        // initialize the reader and lock the stream
+        const it = new AdaptiveByteReader(source);
+        try {
+            do {
+                // read the next value
+                ({ done, value: buffer } = Number.isNaN(size - bufferLength)
+                    ? yield tslib_1.__await(it['read']())
+                    : yield tslib_1.__await(it['read'](size - bufferLength)));
+                // if chunk is not null or empty, push it onto the queue
+                if (!done && buffer.byteLength > 0) {
+                    buffers.push((0, buffer_js_1.toUint8Array)(buffer));
+                    bufferLength += buffer.byteLength;
+                }
+                // If we have enough bytes in our buffer, yield chunks until we don't
+                if (done || size <= bufferLength) {
+                    do {
+                        ({ cmd, size } = yield yield tslib_1.__await(byteRange()));
+                    } while (size < bufferLength);
+                }
+            } while (!done);
+        }
+        catch (e) {
+            (threw = true) && (yield tslib_1.__await(it['cancel'](e)));
+        }
+        finally {
+            (threw === false) ? (yield tslib_1.__await(it['cancel']()))
+                : source['locked'] && it.releaseLock();
+        }
+        return yield tslib_1.__await(null);
+    });
+}
+/** @ignore */
+class AdaptiveByteReader {
+    constructor(source) {
+        this.source = source;
+        this.reader = null;
+        this.reader = this.source['getReader']();
+        // We have to catch and swallow errors here to avoid uncaught promise rejection exceptions
+        // that seem to be raised when we call `releaseLock()` on this reader. I'm still mystified
+        // about why these errors are raised, but I'm sure there's some important spec reason that
+        // I haven't considered. I hate to employ such an anti-pattern here, but it seems like the
+        // only solution in this case :/
+        this.reader['closed'].catch(() => { });
+    }
+    get closed() {
+        return this.reader ? this.reader['closed'].catch(() => { }) : Promise.resolve();
+    }
+    releaseLock() {
+        if (this.reader) {
+            this.reader.releaseLock();
+        }
+        this.reader = null;
+    }
+    cancel(reason) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            const { reader, source } = this;
+            reader && (yield reader['cancel'](reason).catch(() => { }));
+            source && (source['locked'] && this.releaseLock());
+        });
+    }
+    read(size) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            if (size === 0) {
+                return { done: this.reader == null, value: new Uint8Array(0) };
+            }
+            const result = yield this.reader.read();
+            !result.done && (result.value = (0, buffer_js_1.toUint8Array)(result));
+            return result;
+        });
+    }
+}
+/** @ignore */
+const onEvent = (stream, event) => {
+    const handler = (_) => resolve([event, _]);
+    let resolve;
+    return [event, handler, new Promise((r) => (resolve = r) && stream['once'](event, handler))];
+};
+/** @ignore */
+function fromNodeStream(stream) {
+    return tslib_1.__asyncGenerator(this, arguments, function* fromNodeStream_1() {
+        const events = [];
+        let event = 'error';
+        let done = false, err = null;
+        let cmd, size, bufferLength = 0;
+        let buffers = [], buffer;
+        function byteRange() {
+            if (cmd === 'peek') {
+                return (0, buffer_js_1.joinUint8Arrays)(buffers, size)[0];
+            }
+            [buffer, buffers, bufferLength] = (0, buffer_js_1.joinUint8Arrays)(buffers, size);
+            return buffer;
+        }
+        // Yield so the caller can inject the read command before we
+        // add the listener for the source stream's 'readable' event.
+        ({ cmd, size } = yield yield tslib_1.__await(null));
+        // ignore stdin if it's a TTY
+        if (stream['isTTY']) {
+            yield yield tslib_1.__await(new Uint8Array(0));
+            return yield tslib_1.__await(null);
+        }
+        try {
+            // initialize the stream event handlers
+            events[0] = onEvent(stream, 'end');
+            events[1] = onEvent(stream, 'error');
+            do {
+                events[2] = onEvent(stream, 'readable');
+                // wait on the first message event from the stream
+                [event, err] = yield tslib_1.__await(Promise.race(events.map((x) => x[2])));
+                // if the stream emitted an Error, rethrow it
+                if (event === 'error') {
+                    break;
+                }
+                if (!(done = event === 'end')) {
+                    // If the size is NaN, request to read everything in the stream's internal buffer
+                    if (!Number.isFinite(size - bufferLength)) {
+                        buffer = (0, buffer_js_1.toUint8Array)(stream['read']());
+                    }
+                    else {
+                        buffer = (0, buffer_js_1.toUint8Array)(stream['read'](size - bufferLength));
+                        // If the byteLength is 0, then the requested amount is more than the stream has
+                        // in its internal buffer. In this case the stream needs a "kick" to tell it to
+                        // continue emitting readable events, so request to read everything the stream
+                        // has in its internal buffer right now.
+                        if (buffer.byteLength < (size - bufferLength)) {
+                            buffer = (0, buffer_js_1.toUint8Array)(stream['read']());
+                        }
+                    }
+                    // if chunk is not null or empty, push it onto the queue
+                    if (buffer.byteLength > 0) {
+                        buffers.push(buffer);
+                        bufferLength += buffer.byteLength;
+                    }
+                }
+                // If we have enough bytes in our buffer, yield chunks until we don't
+                if (done || size <= bufferLength) {
+                    do {
+                        ({ cmd, size } = yield yield tslib_1.__await(byteRange()));
+                    } while (size < bufferLength);
+                }
+            } while (!done);
+        }
+        finally {
+            yield tslib_1.__await(cleanup(events, event === 'error' ? err : null));
+        }
+        return yield tslib_1.__await(null);
+        function cleanup(events, err) {
+            buffer = buffers = null;
+            return new Promise((resolve, reject) => {
+                for (const [evt, fn] of events) {
+                    stream['off'](evt, fn);
+                }
+                try {
+                    // Some stream implementations don't call the destroy callback,
+                    // because it's really a node-internal API. Just calling `destroy`
+                    // here should be enough to conform to the ReadableStream contract
+                    const destroy = stream['destroy'];
+                    destroy && destroy.call(stream, err);
+                    err = undefined;
+                }
+                catch (e) {
+                    err = e || err;
+                }
+                finally {
+                    err != null ? reject(err) : resolve();
+                }
+            });
+        }
+    });
+}
+
+//# sourceMappingURL=adapters.js.map
diff --git a/igv_component/node_modules/apache-arrow/io/adapters.js.map b/igv_component/node_modules/apache-arrow/io/adapters.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..70ee61cb58c01a92bc9c5282dea6338b97d486f8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/adapters.js.map
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/adapters.mjs b/igv_component/node_modules/apache-arrow/io/adapters.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..5e4e7c0432adab86b0a43d20cce22f29d0cf0dd0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/adapters.mjs
@@ -0,0 +1,319 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { __asyncGenerator, __await, __awaiter } from "tslib";
+import { toUint8Array, joinUint8Arrays, toUint8ArrayIterator, toUint8ArrayAsyncIterator } from '../util/buffer.mjs';
+/** @ignore */
+export default {
+    fromIterable(source) {
+        return pump(fromIterable(source));
+    },
+    fromAsyncIterable(source) {
+        return pump(fromAsyncIterable(source));
+    },
+    fromDOMStream(source) {
+        return pump(fromDOMStream(source));
+    },
+    fromNodeStream(stream) {
+        return pump(fromNodeStream(stream));
+    },
+    // @ts-ignore
+    toDOMStream(source, options) {
+        throw new Error(`"toDOMStream" not available in this environment`);
+    },
+    // @ts-ignore
+    toNodeStream(source, options) {
+        throw new Error(`"toNodeStream" not available in this environment`);
+    },
+};
+/** @ignore */
+const pump = (iterator) => { iterator.next(); return iterator; };
+/** @ignore */
+function* fromIterable(source) {
+    let done, threw = false;
+    let buffers = [], buffer;
+    let cmd, size, bufferLength = 0;
+    function byteRange() {
+        if (cmd === 'peek') {
+            return joinUint8Arrays(buffers, size)[0];
+        }
+        [buffer, buffers, bufferLength] = joinUint8Arrays(buffers, size);
+        return buffer;
+    }
+    // Yield so the caller can inject the read command before creating the source Iterator
+    ({ cmd, size } = yield null);
+    // initialize the iterator
+    const it = toUint8ArrayIterator(source)[Symbol.iterator]();
+    try {
+        do {
+            // read the next value
+            ({ done, value: buffer } = Number.isNaN(size - bufferLength) ?
+                it.next() : it.next(size - bufferLength));
+            // if chunk is not null or empty, push it onto the queue
+            if (!done && buffer.byteLength > 0) {
+                buffers.push(buffer);
+                bufferLength += buffer.byteLength;
+            }
+            // If we have enough bytes in our buffer, yield chunks until we don't
+            if (done || size <= bufferLength) {
+                do {
+                    ({ cmd, size } = yield byteRange());
+                } while (size < bufferLength);
+            }
+        } while (!done);
+    }
+    catch (e) {
+        (threw = true) && (typeof it.throw === 'function') && (it.throw(e));
+    }
+    finally {
+        (threw === false) && (typeof it.return === 'function') && (it.return(null));
+    }
+    return null;
+}
+/** @ignore */
+function fromAsyncIterable(source) {
+    return __asyncGenerator(this, arguments, function* fromAsyncIterable_1() {
+        let done, threw = false;
+        let buffers = [], buffer;
+        let cmd, size, bufferLength = 0;
+        function byteRange() {
+            if (cmd === 'peek') {
+                return joinUint8Arrays(buffers, size)[0];
+            }
+            [buffer, buffers, bufferLength] = joinUint8Arrays(buffers, size);
+            return buffer;
+        }
+        // Yield so the caller can inject the read command before creating the source AsyncIterator
+        ({ cmd, size } = (yield yield __await(null)));
+        // initialize the iterator
+        const it = toUint8ArrayAsyncIterator(source)[Symbol.asyncIterator]();
+        try {
+            do {
+                // read the next value
+                ({ done, value: buffer } = Number.isNaN(size - bufferLength)
+                    ? yield __await(it.next())
+                    : yield __await(it.next(size - bufferLength)));
+                // if chunk is not null or empty, push it onto the queue
+                if (!done && buffer.byteLength > 0) {
+                    buffers.push(buffer);
+                    bufferLength += buffer.byteLength;
+                }
+                // If we have enough bytes in our buffer, yield chunks until we don't
+                if (done || size <= bufferLength) {
+                    do {
+                        ({ cmd, size } = yield yield __await(byteRange()));
+                    } while (size < bufferLength);
+                }
+            } while (!done);
+        }
+        catch (e) {
+            (threw = true) && (typeof it.throw === 'function') && (yield __await(it.throw(e)));
+        }
+        finally {
+            (threw === false) && (typeof it.return === 'function') && (yield __await(it.return(new Uint8Array(0))));
+        }
+        return yield __await(null);
+    });
+}
+// All this manual Uint8Array chunk management can be avoided if/when engines
+// add support for ArrayBuffer.transfer() or ArrayBuffer.prototype.realloc():
+// https://github.com/domenic/proposal-arraybuffer-transfer
+/** @ignore */
+function fromDOMStream(source) {
+    return __asyncGenerator(this, arguments, function* fromDOMStream_1() {
+        let done = false, threw = false;
+        let buffers = [], buffer;
+        let cmd, size, bufferLength = 0;
+        function byteRange() {
+            if (cmd === 'peek') {
+                return joinUint8Arrays(buffers, size)[0];
+            }
+            [buffer, buffers, bufferLength] = joinUint8Arrays(buffers, size);
+            return buffer;
+        }
+        // Yield so the caller can inject the read command before we establish the ReadableStream lock
+        ({ cmd, size } = yield yield __await(null));
+        // initialize the reader and lock the stream
+        const it = new AdaptiveByteReader(source);
+        try {
+            do {
+                // read the next value
+                ({ done, value: buffer } = Number.isNaN(size - bufferLength)
+                    ? yield __await(it['read']())
+                    : yield __await(it['read'](size - bufferLength)));
+                // if chunk is not null or empty, push it onto the queue
+                if (!done && buffer.byteLength > 0) {
+                    buffers.push(toUint8Array(buffer));
+                    bufferLength += buffer.byteLength;
+                }
+                // If we have enough bytes in our buffer, yield chunks until we don't
+                if (done || size <= bufferLength) {
+                    do {
+                        ({ cmd, size } = yield yield __await(byteRange()));
+                    } while (size < bufferLength);
+                }
+            } while (!done);
+        }
+        catch (e) {
+            (threw = true) && (yield __await(it['cancel'](e)));
+        }
+        finally {
+            (threw === false) ? (yield __await(it['cancel']()))
+                : source['locked'] && it.releaseLock();
+        }
+        return yield __await(null);
+    });
+}
+/** @ignore */
+class AdaptiveByteReader {
+    constructor(source) {
+        this.source = source;
+        this.reader = null;
+        this.reader = this.source['getReader']();
+        // We have to catch and swallow errors here to avoid uncaught promise rejection exceptions
+        // that seem to be raised when we call `releaseLock()` on this reader. I'm still mystified
+        // about why these errors are raised, but I'm sure there's some important spec reason that
+        // I haven't considered. I hate to employ such an anti-pattern here, but it seems like the
+        // only solution in this case :/
+        this.reader['closed'].catch(() => { });
+    }
+    get closed() {
+        return this.reader ? this.reader['closed'].catch(() => { }) : Promise.resolve();
+    }
+    releaseLock() {
+        if (this.reader) {
+            this.reader.releaseLock();
+        }
+        this.reader = null;
+    }
+    cancel(reason) {
+        return __awaiter(this, void 0, void 0, function* () {
+            const { reader, source } = this;
+            reader && (yield reader['cancel'](reason).catch(() => { }));
+            source && (source['locked'] && this.releaseLock());
+        });
+    }
+    read(size) {
+        return __awaiter(this, void 0, void 0, function* () {
+            if (size === 0) {
+                return { done: this.reader == null, value: new Uint8Array(0) };
+            }
+            const result = yield this.reader.read();
+            !result.done && (result.value = toUint8Array(result));
+            return result;
+        });
+    }
+}
+/** @ignore */
+const onEvent = (stream, event) => {
+    const handler = (_) => resolve([event, _]);
+    let resolve;
+    return [event, handler, new Promise((r) => (resolve = r) && stream['once'](event, handler))];
+};
+/** @ignore */
+function fromNodeStream(stream) {
+    return __asyncGenerator(this, arguments, function* fromNodeStream_1() {
+        const events = [];
+        let event = 'error';
+        let done = false, err = null;
+        let cmd, size, bufferLength = 0;
+        let buffers = [], buffer;
+        function byteRange() {
+            if (cmd === 'peek') {
+                return joinUint8Arrays(buffers, size)[0];
+            }
+            [buffer, buffers, bufferLength] = joinUint8Arrays(buffers, size);
+            return buffer;
+        }
+        // Yield so the caller can inject the read command before we
+        // add the listener for the source stream's 'readable' event.
+        ({ cmd, size } = yield yield __await(null));
+        // ignore stdin if it's a TTY
+        if (stream['isTTY']) {
+            yield yield __await(new Uint8Array(0));
+            return yield __await(null);
+        }
+        try {
+            // initialize the stream event handlers
+            events[0] = onEvent(stream, 'end');
+            events[1] = onEvent(stream, 'error');
+            do {
+                events[2] = onEvent(stream, 'readable');
+                // wait on the first message event from the stream
+                [event, err] = yield __await(Promise.race(events.map((x) => x[2])));
+                // if the stream emitted an Error, rethrow it
+                if (event === 'error') {
+                    break;
+                }
+                if (!(done = event === 'end')) {
+                    // If the size is NaN, request to read everything in the stream's internal buffer
+                    if (!Number.isFinite(size - bufferLength)) {
+                        buffer = toUint8Array(stream['read']());
+                    }
+                    else {
+                        buffer = toUint8Array(stream['read'](size - bufferLength));
+                        // If the byteLength is 0, then the requested amount is more than the stream has
+                        // in its internal buffer. In this case the stream needs a "kick" to tell it to
+                        // continue emitting readable events, so request to read everything the stream
+                        // has in its internal buffer right now.
+                        if (buffer.byteLength < (size - bufferLength)) {
+                            buffer = toUint8Array(stream['read']());
+                        }
+                    }
+                    // if chunk is not null or empty, push it onto the queue
+                    if (buffer.byteLength > 0) {
+                        buffers.push(buffer);
+                        bufferLength += buffer.byteLength;
+                    }
+                }
+                // If we have enough bytes in our buffer, yield chunks until we don't
+                if (done || size <= bufferLength) {
+                    do {
+                        ({ cmd, size } = yield yield __await(byteRange()));
+                    } while (size < bufferLength);
+                }
+            } while (!done);
+        }
+        finally {
+            yield __await(cleanup(events, event === 'error' ? err : null));
+        }
+        return yield __await(null);
+        function cleanup(events, err) {
+            buffer = buffers = null;
+            return new Promise((resolve, reject) => {
+                for (const [evt, fn] of events) {
+                    stream['off'](evt, fn);
+                }
+                try {
+                    // Some stream implementations don't call the destroy callback,
+                    // because it's really a node-internal API. Just calling `destroy`
+                    // here should be enough to conform to the ReadableStream contract
+                    const destroy = stream['destroy'];
+                    destroy && destroy.call(stream, err);
+                    err = undefined;
+                }
+                catch (e) {
+                    err = e || err;
+                }
+                finally {
+                    err != null ? reject(err) : resolve();
+                }
+            });
+        }
+    });
+}
+
+//# sourceMappingURL=adapters.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/io/adapters.mjs.map b/igv_component/node_modules/apache-arrow/io/adapters.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..abd3f1fd92a8d471095b4475825bae2c8b8c57c0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/adapters.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/file.d.ts b/igv_component/node_modules/apache-arrow/io/file.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..4939c2fe3e6c2e5090a4bfaaea7883aeef424507
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/file.d.ts
@@ -0,0 +1,44 @@
+import { FileHandle } from './interfaces.js';
+import { ByteStream, AsyncByteStream } from './stream.js';
+import { ArrayBufferViewInput } from '../util/buffer.js';
+/** @ignore */
+export declare class RandomAccessFile extends ByteStream {
+    size: number;
+    position: number;
+    protected buffer: Uint8Array | null;
+    constructor(buffer: ArrayBufferViewInput, byteLength?: number);
+    readInt32(position: number): number;
+    seek(position: number): boolean;
+    read(nBytes?: number | null): Uint8Array | null;
+    readAt(position: number, nBytes: number): Uint8Array;
+    close(): void;
+    throw(value?: any): {
+        done: boolean;
+        value: any;
+    };
+    return(value?: any): {
+        done: boolean;
+        value: any;
+    };
+}
+/** @ignore */
+export declare class AsyncRandomAccessFile extends AsyncByteStream {
+    size: number;
+    position: number;
+    _pending?: Promise<void>;
+    protected _handle: FileHandle | null;
+    constructor(file: FileHandle, byteLength?: number);
+    readInt32(position: number): Promise<number>;
+    seek(position: number): Promise<boolean>;
+    read(nBytes?: number | null): Promise<Uint8Array | null>;
+    readAt(position: number, nBytes: number): Promise<Uint8Array>;
+    close(): Promise<void>;
+    throw(value?: any): Promise<{
+        done: boolean;
+        value: any;
+    }>;
+    return(value?: any): Promise<{
+        done: boolean;
+        value: any;
+    }>;
+}
diff --git a/igv_component/node_modules/apache-arrow/io/file.d.ts.map b/igv_component/node_modules/apache-arrow/io/file.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..f5b3705eb080cdd79479f254270caaa3c88d6ea8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/file.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/file.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,UAAU,EAAE,MAAM,iBAAiB,CAAC;AAC7C,OAAO,EAAE,UAAU,EAAE,eAAe,EAAE,MAAM,aAAa,CAAC;AAC1D,OAAO,EAAE,oBAAoB,EAAgB,MAAM,mBAAmB,CAAC;AAEvE,cAAc;AACd,qBAAa,gBAAiB,SAAQ,UAAU;IACrC,IAAI,EAAE,MAAM,CAAC;IACb,QAAQ,SAAK;IACpB,SAAS,CAAC,MAAM,EAAE,UAAU,GAAG,IAAI,CAAC;gBACxB,MAAM,EAAE,oBAAoB,EAAE,UAAU,CAAC,EAAE,MAAM;IAKtD,SAAS,CAAC,QAAQ,EAAE,MAAM;IAI1B,IAAI,CAAC,QAAQ,EAAE,MAAM;IAIrB,IAAI,CAAC,MAAM,CAAC,EAAE,MAAM,GAAG,IAAI;IAU3B,MAAM,CAAC,QAAQ,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM;IAKvC,KAAK;IACL,KAAK,CAAC,KAAK,CAAC,EAAE,GAAG;;;;IACjB,MAAM,CAAC,KAAK,CAAC,EAAE,GAAG;;;;CAC5B;AAED,cAAc;AACd,qBAAa,qBAAsB,SAAQ,eAAe;IACvC,IAAI,EAAE,MAAM,CAAC;IACrB,QAAQ,SAAK;IACb,QAAQ,CAAC,EAAE,OAAO,CAAC,IAAI,CAAC,CAAC;IAChC,SAAS,CAAC,OAAO,EAAE,UAAU,GAAG,IAAI,CAAC;gBACzB,IAAI,EAAE,UAAU,EAAE,UAAU,CAAC,EAAE,MAAM;IAYpC,SAAS,CAAC,QAAQ,EAAE,MAAM;IAI1B,IAAI,CAAC,QAAQ,EAAE,MAAM;IAKrB,IAAI,CAAC,MAAM,CAAC,EAAE,MAAM,GAAG,IAAI;IAe3B,MAAM,CAAC,QAAQ,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM;IAUvC,KAAK;IACL,KAAK,CAAC,KAAK,CAAC,EAAE,GAAG;;;;IACjB,MAAM,CAAC,KAAK,CAAC,EAAE,GAAG;;;;CAClC","file":"file.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/file.js b/igv_component/node_modules/apache-arrow/io/file.js
new file mode 100644
index 0000000000000000000000000000000000000000..f80e96c8a83f04df3f9c73b272389e1deaba82ea
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/file.js
@@ -0,0 +1,132 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.AsyncRandomAccessFile = exports.RandomAccessFile = void 0;
+const tslib_1 = require("tslib");
+const stream_js_1 = require("./stream.js");
+const buffer_js_1 = require("../util/buffer.js");
+/** @ignore */
+class RandomAccessFile extends stream_js_1.ByteStream {
+    constructor(buffer, byteLength) {
+        super();
+        this.position = 0;
+        this.buffer = (0, buffer_js_1.toUint8Array)(buffer);
+        this.size = typeof byteLength === 'undefined' ? this.buffer.byteLength : byteLength;
+    }
+    readInt32(position) {
+        const { buffer, byteOffset } = this.readAt(position, 4);
+        return new DataView(buffer, byteOffset).getInt32(0, true);
+    }
+    seek(position) {
+        this.position = Math.min(position, this.size);
+        return position < this.size;
+    }
+    read(nBytes) {
+        const { buffer, size, position } = this;
+        if (buffer && position < size) {
+            if (typeof nBytes !== 'number') {
+                nBytes = Number.POSITIVE_INFINITY;
+            }
+            this.position = Math.min(size, position + Math.min(size - position, nBytes));
+            return buffer.subarray(position, this.position);
+        }
+        return null;
+    }
+    readAt(position, nBytes) {
+        const buf = this.buffer;
+        const end = Math.min(this.size, position + nBytes);
+        return buf ? buf.subarray(position, end) : new Uint8Array(nBytes);
+    }
+    close() { this.buffer && (this.buffer = null); }
+    throw(value) { this.close(); return { done: true, value }; }
+    return(value) { this.close(); return { done: true, value }; }
+}
+exports.RandomAccessFile = RandomAccessFile;
+/** @ignore */
+class AsyncRandomAccessFile extends stream_js_1.AsyncByteStream {
+    constructor(file, byteLength) {
+        super();
+        this.position = 0;
+        this._handle = file;
+        if (typeof byteLength === 'number') {
+            this.size = byteLength;
+        }
+        else {
+            this._pending = (() => tslib_1.__awaiter(this, void 0, void 0, function* () {
+                this.size = (yield file.stat()).size;
+                delete this._pending;
+            }))();
+        }
+    }
+    readInt32(position) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            const { buffer, byteOffset } = yield this.readAt(position, 4);
+            return new DataView(buffer, byteOffset).getInt32(0, true);
+        });
+    }
+    seek(position) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            this._pending && (yield this._pending);
+            this.position = Math.min(position, this.size);
+            return position < this.size;
+        });
+    }
+    read(nBytes) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            this._pending && (yield this._pending);
+            const { _handle: file, size, position } = this;
+            if (file && position < size) {
+                if (typeof nBytes !== 'number') {
+                    nBytes = Number.POSITIVE_INFINITY;
+                }
+                let pos = position, offset = 0, bytesRead = 0;
+                const end = Math.min(size, pos + Math.min(size - pos, nBytes));
+                const buffer = new Uint8Array(Math.max(0, (this.position = end) - pos));
+                while ((pos += bytesRead) < end && (offset += bytesRead) < buffer.byteLength) {
+                    ({ bytesRead } = yield file.read(buffer, offset, buffer.byteLength - offset, pos));
+                }
+                return buffer;
+            }
+            return null;
+        });
+    }
+    readAt(position, nBytes) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            this._pending && (yield this._pending);
+            const { _handle: file, size } = this;
+            if (file && (position + nBytes) < size) {
+                const end = Math.min(size, position + nBytes);
+                const buffer = new Uint8Array(end - position);
+                return (yield file.read(buffer, 0, nBytes, position)).buffer;
+            }
+            return new Uint8Array(nBytes);
+        });
+    }
+    close() {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () { const f = this._handle; this._handle = null; f && (yield f.close()); });
+    }
+    throw(value) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () { yield this.close(); return { done: true, value }; });
+    }
+    return(value) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () { yield this.close(); return { done: true, value }; });
+    }
+}
+exports.AsyncRandomAccessFile = AsyncRandomAccessFile;
+
+//# sourceMappingURL=file.js.map
diff --git a/igv_component/node_modules/apache-arrow/io/file.js.map b/igv_component/node_modules/apache-arrow/io/file.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..146a3fdca464d3f7efe6861423d62c2ec18e0737
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/file.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/file.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;;AAGrB,2CAA0D;AAC1D,iDAAuE;AAEvE,cAAc;AACd,MAAa,gBAAiB,SAAQ,sBAAU;IAI5C,YAAY,MAA4B,EAAE,UAAmB;QACzD,KAAK,EAAE,CAAC;QAHL,aAAQ,GAAG,CAAC,CAAC;QAIhB,IAAI,CAAC,MAAM,GAAG,IAAA,wBAAY,EAAC,MAAM,CAAC,CAAC;QACnC,IAAI,CAAC,IAAI,GAAG,OAAO,UAAU,KAAK,WAAW,CAAC,CAAC,CAAC,IAAI,CAAC,MAAO,CAAC,UAAU,CAAC,CAAC,CAAC,UAAU,CAAC;IACzF,CAAC;IACM,SAAS,CAAC,QAAgB;QAC7B,MAAM,EAAE,MAAM,EAAE,UAAU,EAAE,GAAG,IAAI,CAAC,MAAM,CAAC,QAAQ,EAAE,CAAC,CAAC,CAAC;QACxD,OAAO,IAAI,QAAQ,CAAC,MAAM,EAAE,UAAU,CAAC,CAAC,QAAQ,CAAC,CAAC,EAAE,IAAI,CAAC,CAAC;IAC9D,CAAC;IACM,IAAI,CAAC,QAAgB;QACxB,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,GAAG,CAAC,QAAQ,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;QAC9C,OAAO,QAAQ,GAAG,IAAI,CAAC,IAAI,CAAC;IAChC,CAAC;IACM,IAAI,CAAC,MAAsB;QAC9B,MAAM,EAAE,MAAM,EAAE,IAAI,EAAE,QAAQ,EAAE,GAAG,IAAI,CAAC;QACxC,IAAI,MAAM,IAAI,QAAQ,GAAG,IAAI,EAAE;YAC3B,IAAI,OAAO,MAAM,KAAK,QAAQ,EAAE;gBAAE,MAAM,GAAG,MAAM,CAAC,iBAAiB,CAAC;aAAE;YACtE,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,GAAG,CAAC,IAAI,EACzB,QAAQ,GAAG,IAAI,CAAC,GAAG,CAAC,IAAI,GAAG,QAAQ,EAAE,MAAM,CAAC,CAAC,CAAC;YAClD,OAAO,MAAM,CAAC,QAAQ,CAAC,QAAQ,EAAE,IAAI,CAAC,QAAQ,CAAC,CAAC;SACnD;QACD,OAAO,IAAI,CAAC;IAChB,CAAC;IACM,MAAM,CAAC,QAAgB,EAAE,MAAc;QAC1C,MAAM,GAAG,GAAG,IAAI,CAAC,MAAM,CAAC;QACxB,MAAM,GAAG,GAAG,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,IAAI,EAAE,QAAQ,GAAG,MAAM,CAAC,CAAC;QACnD,OAAO,GAAG,CAAC,CAAC,CAAC,GAAG,CAAC,QAAQ,CAAC,QAAQ,EAAE,GAAG,CAAC,CAAC,CAAC,CAAC,IAAI,UAAU,CAAC,MAAM,CAAC,CAAC;IACtE,CAAC;IACM,KAAK,KAAK,IAAI,CAAC,MAAM,IAAI,CAAC,IAAI,CAAC,MAAM,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC;IAChD,KAAK,CAAC,KAAW,IAAI,IAAI,CAAC,KAAK,EAAE,CAAC,CAAC,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,CAAC,CAAC,CAAC;IAClE,MAAM,CAAC,KAAW,IAAI,IAAI,CAAC,KAAK,EAAE,CAAC,CAAC,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,CAAC,CAAC,CAAC;CAC7E;AAnCD,4CAmCC;AAED,cAAc;AACd,MAAa,qBAAsB,SAAQ,2BAAe;IAKtD,YAAY,IAAgB,EAAE,UAAmB;QAC7C,KAAK,EAAE,CAAC;QAJL,aAAQ,GAAG,CAAC,CAAC;QAKhB,IAAI,CAAC,OAAO,GAAG,IAAI,CAAC;QACpB,IAAI,OAAO,UAAU,KAAK,QAAQ,EAAE;YAChC,IAAI,CAAC,IAAI,GAAG,UAAU,CAAC;SAC1B;aAAM;YACH,IAAI,CAAC,QAAQ,GAAG,CAAC,GAAS,EAAE;gBACxB,IAAI,CAAC,IAAI,GAAG,CAAC,MAAM,IAAI,CAAC,IAAI,EAAE,CAAC,CAAC,IAAI,CAAC;gBACrC,OAAO,IAAI,CAAC,QAAQ,CAAC;YACzB,CAAC,CAAA,CAAC,EAAE,CAAC;SACR;IACL,CAAC;IACY,SAAS,CAAC,QAAgB;;YACnC,MAAM,EAAE,MAAM,EAAE,UAAU,EAAE,GAAG,MAAM,IAAI,CAAC,MAAM,CAAC,QAAQ,EAAE,CAAC,CAAC,CAAC;YAC9D,OAAO,IAAI,QAAQ,CAAC,MAAM,EAAE,UAAU,CAAC,CAAC,QAAQ,CAAC,CAAC,EAAE,IAAI,CAAC,CAAC;QAC9D,CAAC;KAAA;IACY,IAAI,CAAC,QAAgB;;YAC9B,IAAI,CAAC,QAAQ,KAAI,MAAM,IAAI,CAAC,QAAQ,CAAA,CAAC;YACrC,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,GAAG,CAAC,QAAQ,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;YAC9C,OAAO,QAAQ,GAAG,IAAI,CAAC,IAAI,CAAC;QAChC,CAAC;KAAA;IACY,IAAI,CAAC,MAAsB;;YACpC,IAAI,CAAC,QAAQ,KAAI,MAAM,IAAI,CAAC,QAAQ,CAAA,CAAC;YACrC,MAAM,EAAE,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,QAAQ,EAAE,GAAG,IAAI,CAAC;YAC/C,IAAI,IAAI,IAAI,QAAQ,GAAG,IAAI,EAAE;gBACzB,IAAI,OAAO,MAAM,KAAK,QAAQ,EAAE;oBAAE,MAAM,GAAG,MAAM,CAAC,iBAAiB,CAAC;iBAAE;gBACtE,IAAI,GAAG,GAAG,QAAQ,EAAE,MAAM,GAAG,CAAC,EAAE,SAAS,GAAG,CAAC,CAAC;gBAC9C,MAAM,GAAG,GAAG,IAAI,CAAC,GAAG,CAAC,IAAI,EAAE,GAAG,GAAG,IAAI,CAAC,GAAG,CAAC,IAAI,GAAG,GAAG,EAAE,MAAM,CAAC,CAAC,CAAC;gBAC/D,MAAM,MAAM,GAAG,IAAI,UAAU,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,IAAI,CAAC,QAAQ,GAAG,GAAG,CAAC,GAAG,GAAG,CAAC,CAAC,CAAC;gBACxE,OAAO,CAAC,GAAG,IAAI,SAAS,CAAC,GAAG,GAAG,IAAI,CAAC,MAAM,IAAI,SAAS,CAAC,GAAG,MAAM,CAAC,UAAU,EAAE;oBAC1E,CAAC,EAAE,SAAS,EAAE,GAAG,MAAM,IAAI,CAAC,IAAI,CAAC,MAAM,EAAE,MAAM,EAAE,MAAM,CAAC,UAAU,GAAG,MAAM,EAAE,GAAG,CAAC,CAAC,CAAC;iBACtF;gBACD,OAAO,MAAM,CAAC;aACjB;YACD,OAAO,IAAI,CAAC;QAChB,CAAC;KAAA;IACY,MAAM,CAAC,QAAgB,EAAE,MAAc;;YAChD,IAAI,CAAC,QAAQ,KAAI,MAAM,IAAI,CAAC,QAAQ,CAAA,CAAC;YACrC,MAAM,EAAE,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,GAAG,IAAI,CAAC;YACrC,IAAI,IAAI,IAAI,CAAC,QAAQ,GAAG,MAAM,CAAC,GAAG,IAAI,EAAE;gBACpC,MAAM,GAAG,GAAG,IAAI,CAAC,GAAG,CAAC,IAAI,EAAE,QAAQ,GAAG,MAAM,CAAC,CAAC;gBAC9C,MAAM,MAAM,GAAG,IAAI,UAAU,CAAC,GAAG,GAAG,QAAQ,CAAC,CAAC;gBAC9C,OAAO,CAAC,MAAM,IAAI,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,EAAE,MAAM,EAAE,QAAQ,CAAC,CAAC,CAAC,MAAM,CAAC;aAChE;YACD,OAAO,IAAI,UAAU,CAAC,MAAM,CAAC,CAAC;QAClC,CAAC;KAAA;IACY,KAAK;sEAAK,MAAM,CAAC,GAAG,IAAI,CAAC,OAAO,CAAC,CAAC,IAAI,CAAC,OAAO,GAAG,IAAI,CAAC,CAAC,CAAC,KAAI,MAAM,CAAC,CAAC,KAAK,EAAE,CAAA,CAAC,CAAC,CAAC;KAAA;IAC9E,KAAK,CAAC,KAAW;sEAAI,MAAM,IAAI,CAAC,KAAK,EAAE,CAAC,CAAC,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,CAAC,CAAC,CAAC;KAAA;IACxE,MAAM,CAAC,KAAW;sEAAI,MAAM,IAAI,CAAC,KAAK,EAAE,CAAC,CAAC,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,CAAC,CAAC,CAAC;KAAA;CACzF;AAtDD,sDAsDC","file":"file.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/file.mjs b/igv_component/node_modules/apache-arrow/io/file.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..be86cd9058534e13ba0447b9e078e2184b3f06ca
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/file.mjs
@@ -0,0 +1,127 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { __awaiter } from "tslib";
+import { ByteStream, AsyncByteStream } from './stream.mjs';
+import { toUint8Array } from '../util/buffer.mjs';
+/** @ignore */
+export class RandomAccessFile extends ByteStream {
+    constructor(buffer, byteLength) {
+        super();
+        this.position = 0;
+        this.buffer = toUint8Array(buffer);
+        this.size = typeof byteLength === 'undefined' ? this.buffer.byteLength : byteLength;
+    }
+    readInt32(position) {
+        const { buffer, byteOffset } = this.readAt(position, 4);
+        return new DataView(buffer, byteOffset).getInt32(0, true);
+    }
+    seek(position) {
+        this.position = Math.min(position, this.size);
+        return position < this.size;
+    }
+    read(nBytes) {
+        const { buffer, size, position } = this;
+        if (buffer && position < size) {
+            if (typeof nBytes !== 'number') {
+                nBytes = Number.POSITIVE_INFINITY;
+            }
+            this.position = Math.min(size, position + Math.min(size - position, nBytes));
+            return buffer.subarray(position, this.position);
+        }
+        return null;
+    }
+    readAt(position, nBytes) {
+        const buf = this.buffer;
+        const end = Math.min(this.size, position + nBytes);
+        return buf ? buf.subarray(position, end) : new Uint8Array(nBytes);
+    }
+    close() { this.buffer && (this.buffer = null); }
+    throw(value) { this.close(); return { done: true, value }; }
+    return(value) { this.close(); return { done: true, value }; }
+}
+/** @ignore */
+export class AsyncRandomAccessFile extends AsyncByteStream {
+    constructor(file, byteLength) {
+        super();
+        this.position = 0;
+        this._handle = file;
+        if (typeof byteLength === 'number') {
+            this.size = byteLength;
+        }
+        else {
+            this._pending = (() => __awaiter(this, void 0, void 0, function* () {
+                this.size = (yield file.stat()).size;
+                delete this._pending;
+            }))();
+        }
+    }
+    readInt32(position) {
+        return __awaiter(this, void 0, void 0, function* () {
+            const { buffer, byteOffset } = yield this.readAt(position, 4);
+            return new DataView(buffer, byteOffset).getInt32(0, true);
+        });
+    }
+    seek(position) {
+        return __awaiter(this, void 0, void 0, function* () {
+            this._pending && (yield this._pending);
+            this.position = Math.min(position, this.size);
+            return position < this.size;
+        });
+    }
+    read(nBytes) {
+        return __awaiter(this, void 0, void 0, function* () {
+            this._pending && (yield this._pending);
+            const { _handle: file, size, position } = this;
+            if (file && position < size) {
+                if (typeof nBytes !== 'number') {
+                    nBytes = Number.POSITIVE_INFINITY;
+                }
+                let pos = position, offset = 0, bytesRead = 0;
+                const end = Math.min(size, pos + Math.min(size - pos, nBytes));
+                const buffer = new Uint8Array(Math.max(0, (this.position = end) - pos));
+                while ((pos += bytesRead) < end && (offset += bytesRead) < buffer.byteLength) {
+                    ({ bytesRead } = yield file.read(buffer, offset, buffer.byteLength - offset, pos));
+                }
+                return buffer;
+            }
+            return null;
+        });
+    }
+    readAt(position, nBytes) {
+        return __awaiter(this, void 0, void 0, function* () {
+            this._pending && (yield this._pending);
+            const { _handle: file, size } = this;
+            if (file && (position + nBytes) < size) {
+                const end = Math.min(size, position + nBytes);
+                const buffer = new Uint8Array(end - position);
+                return (yield file.read(buffer, 0, nBytes, position)).buffer;
+            }
+            return new Uint8Array(nBytes);
+        });
+    }
+    close() {
+        return __awaiter(this, void 0, void 0, function* () { const f = this._handle; this._handle = null; f && (yield f.close()); });
+    }
+    throw(value) {
+        return __awaiter(this, void 0, void 0, function* () { yield this.close(); return { done: true, value }; });
+    }
+    return(value) {
+        return __awaiter(this, void 0, void 0, function* () { yield this.close(); return { done: true, value }; });
+    }
+}
+
+//# sourceMappingURL=file.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/io/file.mjs.map b/igv_component/node_modules/apache-arrow/io/file.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..731a64fae1a6c51d4e6cc270f2a979d121e94c21
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/file.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/file.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;AAGrB,OAAO,EAAE,UAAU,EAAE,eAAe,EAAE,MAAM,aAAa,CAAC;AAC1D,OAAO,EAAwB,YAAY,EAAE,MAAM,mBAAmB,CAAC;AAEvE,cAAc;AACd,MAAM,OAAO,gBAAiB,SAAQ,UAAU;IAI5C,YAAY,MAA4B,EAAE,UAAmB;QACzD,KAAK,EAAE,CAAC;QAHL,aAAQ,GAAG,CAAC,CAAC;QAIhB,IAAI,CAAC,MAAM,GAAG,YAAY,CAAC,MAAM,CAAC,CAAC;QACnC,IAAI,CAAC,IAAI,GAAG,OAAO,UAAU,KAAK,WAAW,CAAC,CAAC,CAAC,IAAI,CAAC,MAAO,CAAC,UAAU,CAAC,CAAC,CAAC,UAAU,CAAC;IACzF,CAAC;IACM,SAAS,CAAC,QAAgB;QAC7B,MAAM,EAAE,MAAM,EAAE,UAAU,EAAE,GAAG,IAAI,CAAC,MAAM,CAAC,QAAQ,EAAE,CAAC,CAAC,CAAC;QACxD,OAAO,IAAI,QAAQ,CAAC,MAAM,EAAE,UAAU,CAAC,CAAC,QAAQ,CAAC,CAAC,EAAE,IAAI,CAAC,CAAC;IAC9D,CAAC;IACM,IAAI,CAAC,QAAgB;QACxB,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,GAAG,CAAC,QAAQ,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;QAC9C,OAAO,QAAQ,GAAG,IAAI,CAAC,IAAI,CAAC;IAChC,CAAC;IACM,IAAI,CAAC,MAAsB;QAC9B,MAAM,EAAE,MAAM,EAAE,IAAI,EAAE,QAAQ,EAAE,GAAG,IAAI,CAAC;QACxC,IAAI,MAAM,IAAI,QAAQ,GAAG,IAAI,EAAE;YAC3B,IAAI,OAAO,MAAM,KAAK,QAAQ,EAAE;gBAAE,MAAM,GAAG,MAAM,CAAC,iBAAiB,CAAC;aAAE;YACtE,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,GAAG,CAAC,IAAI,EACzB,QAAQ,GAAG,IAAI,CAAC,GAAG,CAAC,IAAI,GAAG,QAAQ,EAAE,MAAM,CAAC,CAAC,CAAC;YAClD,OAAO,MAAM,CAAC,QAAQ,CAAC,QAAQ,EAAE,IAAI,CAAC,QAAQ,CAAC,CAAC;SACnD;QACD,OAAO,IAAI,CAAC;IAChB,CAAC;IACM,MAAM,CAAC,QAAgB,EAAE,MAAc;QAC1C,MAAM,GAAG,GAAG,IAAI,CAAC,MAAM,CAAC;QACxB,MAAM,GAAG,GAAG,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,IAAI,EAAE,QAAQ,GAAG,MAAM,CAAC,CAAC;QACnD,OAAO,GAAG,CAAC,CAAC,CAAC,GAAG,CAAC,QAAQ,CAAC,QAAQ,EAAE,GAAG,CAAC,CAAC,CAAC,CAAC,IAAI,UAAU,CAAC,MAAM,CAAC,CAAC;IACtE,CAAC;IACM,KAAK,KAAK,IAAI,CAAC,MAAM,IAAI,CAAC,IAAI,CAAC,MAAM,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC;IAChD,KAAK,CAAC,KAAW,IAAI,IAAI,CAAC,KAAK,EAAE,CAAC,CAAC,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,CAAC,CAAC,CAAC;IAClE,MAAM,CAAC,KAAW,IAAI,IAAI,CAAC,KAAK,EAAE,CAAC,CAAC,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,CAAC,CAAC,CAAC;CAC7E;AAED,cAAc;AACd,MAAM,OAAO,qBAAsB,SAAQ,eAAe;IAKtD,YAAY,IAAgB,EAAE,UAAmB;QAC7C,KAAK,EAAE,CAAC;QAJL,aAAQ,GAAG,CAAC,CAAC;QAKhB,IAAI,CAAC,OAAO,GAAG,IAAI,CAAC;QACpB,IAAI,OAAO,UAAU,KAAK,QAAQ,EAAE;YAChC,IAAI,CAAC,IAAI,GAAG,UAAU,CAAC;SAC1B;aAAM;YACH,IAAI,CAAC,QAAQ,GAAG,CAAC,GAAS,EAAE;gBACxB,IAAI,CAAC,IAAI,GAAG,CAAC,MAAM,IAAI,CAAC,IAAI,EAAE,CAAC,CAAC,IAAI,CAAC;gBACrC,OAAO,IAAI,CAAC,QAAQ,CAAC;YACzB,CAAC,CAAA,CAAC,EAAE,CAAC;SACR;IACL,CAAC;IACY,SAAS,CAAC,QAAgB;;YACnC,MAAM,EAAE,MAAM,EAAE,UAAU,EAAE,GAAG,MAAM,IAAI,CAAC,MAAM,CAAC,QAAQ,EAAE,CAAC,CAAC,CAAC;YAC9D,OAAO,IAAI,QAAQ,CAAC,MAAM,EAAE,UAAU,CAAC,CAAC,QAAQ,CAAC,CAAC,EAAE,IAAI,CAAC,CAAC;QAC9D,CAAC;KAAA;IACY,IAAI,CAAC,QAAgB;;YAC9B,IAAI,CAAC,QAAQ,KAAI,MAAM,IAAI,CAAC,QAAQ,CAAA,CAAC;YACrC,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,GAAG,CAAC,QAAQ,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;YAC9C,OAAO,QAAQ,GAAG,IAAI,CAAC,IAAI,CAAC;QAChC,CAAC;KAAA;IACY,IAAI,CAAC,MAAsB;;YACpC,IAAI,CAAC,QAAQ,KAAI,MAAM,IAAI,CAAC,QAAQ,CAAA,CAAC;YACrC,MAAM,EAAE,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,QAAQ,EAAE,GAAG,IAAI,CAAC;YAC/C,IAAI,IAAI,IAAI,QAAQ,GAAG,IAAI,EAAE;gBACzB,IAAI,OAAO,MAAM,KAAK,QAAQ,EAAE;oBAAE,MAAM,GAAG,MAAM,CAAC,iBAAiB,CAAC;iBAAE;gBACtE,IAAI,GAAG,GAAG,QAAQ,EAAE,MAAM,GAAG,CAAC,EAAE,SAAS,GAAG,CAAC,CAAC;gBAC9C,MAAM,GAAG,GAAG,IAAI,CAAC,GAAG,CAAC,IAAI,EAAE,GAAG,GAAG,IAAI,CAAC,GAAG,CAAC,IAAI,GAAG,GAAG,EAAE,MAAM,CAAC,CAAC,CAAC;gBAC/D,MAAM,MAAM,GAAG,IAAI,UAAU,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,IAAI,CAAC,QAAQ,GAAG,GAAG,CAAC,GAAG,GAAG,CAAC,CAAC,CAAC;gBACxE,OAAO,CAAC,GAAG,IAAI,SAAS,CAAC,GAAG,GAAG,IAAI,CAAC,MAAM,IAAI,SAAS,CAAC,GAAG,MAAM,CAAC,UAAU,EAAE;oBAC1E,CAAC,EAAE,SAAS,EAAE,GAAG,MAAM,IAAI,CAAC,IAAI,CAAC,MAAM,EAAE,MAAM,EAAE,MAAM,CAAC,UAAU,GAAG,MAAM,EAAE,GAAG,CAAC,CAAC,CAAC;iBACtF;gBACD,OAAO,MAAM,CAAC;aACjB;YACD,OAAO,IAAI,CAAC;QAChB,CAAC;KAAA;IACY,MAAM,CAAC,QAAgB,EAAE,MAAc;;YAChD,IAAI,CAAC,QAAQ,KAAI,MAAM,IAAI,CAAC,QAAQ,CAAA,CAAC;YACrC,MAAM,EAAE,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,GAAG,IAAI,CAAC;YACrC,IAAI,IAAI,IAAI,CAAC,QAAQ,GAAG,MAAM,CAAC,GAAG,IAAI,EAAE;gBACpC,MAAM,GAAG,GAAG,IAAI,CAAC,GAAG,CAAC,IAAI,EAAE,QAAQ,GAAG,MAAM,CAAC,CAAC;gBAC9C,MAAM,MAAM,GAAG,IAAI,UAAU,CAAC,GAAG,GAAG,QAAQ,CAAC,CAAC;gBAC9C,OAAO,CAAC,MAAM,IAAI,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,EAAE,MAAM,EAAE,QAAQ,CAAC,CAAC,CAAC,MAAM,CAAC;aAChE;YACD,OAAO,IAAI,UAAU,CAAC,MAAM,CAAC,CAAC;QAClC,CAAC;KAAA;IACY,KAAK;8DAAK,MAAM,CAAC,GAAG,IAAI,CAAC,OAAO,CAAC,CAAC,IAAI,CAAC,OAAO,GAAG,IAAI,CAAC,CAAC,CAAC,KAAI,MAAM,CAAC,CAAC,KAAK,EAAE,CAAA,CAAC,CAAC,CAAC;KAAA;IAC9E,KAAK,CAAC,KAAW;8DAAI,MAAM,IAAI,CAAC,KAAK,EAAE,CAAC,CAAC,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,CAAC,CAAC,CAAC;KAAA;IACxE,MAAM,CAAC,KAAW;8DAAI,MAAM,IAAI,CAAC,KAAK,EAAE,CAAC,CAAC,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,CAAC,CAAC,CAAC;KAAA;CACzF","file":"file.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/interfaces.d.ts b/igv_component/node_modules/apache-arrow/io/interfaces.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..1b0d95a4eb1a984c6336aed848fc1a42d6f64eae
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/interfaces.d.ts
@@ -0,0 +1,98 @@
+/// <reference types="node" />
+/// <reference types="node" />
+/** @ignore */
+export declare const ITERATOR_DONE: any;
+/** @ignore */
+export declare type FileHandle = import('fs').promises.FileHandle;
+/** @ignore */
+export declare type ArrowJSONLike = {
+    schema: any;
+    batches?: any[];
+    dictionaries?: any[];
+};
+/** @ignore */
+export declare type ReadableDOMStreamOptions = {
+    type: 'bytes' | undefined;
+    autoAllocateChunkSize?: number;
+    highWaterMark?: number;
+};
+/** @ignore */
+export declare class ArrowJSON {
+    private _json;
+    constructor(_json: ArrowJSONLike);
+    get schema(): any;
+    get batches(): any[];
+    get dictionaries(): any[];
+}
+/** @ignore */
+export interface Readable<T> {
+    readonly closed: Promise<void>;
+    cancel(reason?: any): Promise<void>;
+    read(size?: number | null): Promise<T | null>;
+    peek(size?: number | null): Promise<T | null>;
+    throw(value?: any): Promise<IteratorResult<any>>;
+    return(value?: any): Promise<IteratorResult<any>>;
+    next(size?: number | null): Promise<IteratorResult<T>>;
+}
+/** @ignore */
+export interface Writable<T> {
+    readonly closed: Promise<void>;
+    close(): void;
+    write(chunk: T): void;
+    abort(reason?: any): void;
+}
+/** @ignore */
+export interface ReadableWritable<TReadable, TWritable> extends Readable<TReadable>, Writable<TWritable> {
+    [Symbol.asyncIterator](): AsyncIterableIterator<TReadable>;
+    toDOMStream(options?: ReadableDOMStreamOptions): ReadableStream<TReadable>;
+    toNodeStream(options?: import('stream').ReadableOptions): import('stream').Readable;
+}
+/** @ignore */
+export declare abstract class ReadableInterop<T> {
+    abstract toDOMStream(options?: ReadableDOMStreamOptions): ReadableStream<T>;
+    abstract toNodeStream(options?: import('stream').ReadableOptions): import('stream').Readable;
+    tee(): [ReadableStream<T>, ReadableStream<T>];
+    pipe<R extends NodeJS.WritableStream>(writable: R, options?: {
+        end?: boolean;
+    }): R;
+    pipeTo(writable: WritableStream<T>, options?: StreamPipeOptions): Promise<void>;
+    pipeThrough<R extends ReadableStream<any>>(duplex: {
+        writable: WritableStream<T>;
+        readable: R;
+    }, options?: StreamPipeOptions): ReadableStream<any>;
+    protected _DOMStream?: ReadableStream<T>;
+    private _getDOMStream;
+    protected _nodeStream?: import('stream').Readable;
+    private _getNodeStream;
+}
+/** @ignore */
+declare type Resolution<T> = {
+    resolve: (value: T | PromiseLike<T>) => void;
+    reject: (reason?: any) => void;
+};
+/** @ignore */
+export declare class AsyncQueue<TReadable = Uint8Array, TWritable = TReadable> extends ReadableInterop<TReadable> implements AsyncIterableIterator<TReadable>, ReadableWritable<TReadable, TWritable> {
+    protected _values: TWritable[];
+    protected _error?: {
+        error: any;
+    };
+    protected _closedPromise: Promise<void>;
+    protected _closedPromiseResolve?: (value?: any) => void;
+    protected resolvers: Resolution<IteratorResult<TReadable>>[];
+    constructor();
+    get closed(): Promise<void>;
+    cancel(reason?: any): Promise<void>;
+    write(value: TWritable): void;
+    abort(value?: any): void;
+    close(): void;
+    [Symbol.asyncIterator](): this;
+    toDOMStream(options?: ReadableDOMStreamOptions): ReadableStream<TReadable>;
+    toNodeStream(options?: import('stream').ReadableOptions): import("stream").Readable;
+    throw(_?: any): Promise<any>;
+    return(_?: any): Promise<any>;
+    read(size?: number | null): Promise<TReadable | null>;
+    peek(size?: number | null): Promise<TReadable | null>;
+    next(..._args: any[]): Promise<IteratorResult<TReadable>>;
+    protected _ensureOpen(): boolean;
+}
+export {};
diff --git a/igv_component/node_modules/apache-arrow/io/interfaces.d.ts.map b/igv_component/node_modules/apache-arrow/io/interfaces.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..0233030aa3f342c274ab137d82d3d4495d0d4a62
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/interfaces.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/interfaces.ts"],"names":[],"mappings":";;AAmBA,cAAc;AACd,eAAO,MAAM,aAAa,EAAE,GAAoD,CAAC;AAEjF,cAAc;AACd,oBAAY,UAAU,GAAG,OAAO,IAAI,EAAE,QAAQ,CAAC,UAAU,CAAC;AAC1D,cAAc;AACd,oBAAY,aAAa,GAAG;IAAE,MAAM,EAAE,GAAG,CAAC;IAAC,OAAO,CAAC,EAAE,GAAG,EAAE,CAAC;IAAC,YAAY,CAAC,EAAE,GAAG,EAAE,CAAA;CAAE,CAAC;AACnF,cAAc;AACd,oBAAY,wBAAwB,GAAG;IAAE,IAAI,EAAE,OAAO,GAAG,SAAS,CAAC;IAAC,qBAAqB,CAAC,EAAE,MAAM,CAAC;IAAC,aAAa,CAAC,EAAE,MAAM,CAAA;CAAE,CAAC;AAE7H,cAAc;AACd,qBAAa,SAAS;IACN,OAAO,CAAC,KAAK;gBAAL,KAAK,EAAE,aAAa;IACxC,IAAW,MAAM,IAAI,GAAG,CAAiC;IACzD,IAAW,OAAO,IAAI,GAAG,EAAE,CAAmD;IAC9E,IAAW,YAAY,IAAI,GAAG,EAAE,CAAwD;CAC3F;AAED,cAAc;AACd,MAAM,WAAW,QAAQ,CAAC,CAAC;IAEvB,QAAQ,CAAC,MAAM,EAAE,OAAO,CAAC,IAAI,CAAC,CAAC;IAC/B,MAAM,CAAC,MAAM,CAAC,EAAE,GAAG,GAAG,OAAO,CAAC,IAAI,CAAC,CAAC;IAEpC,IAAI,CAAC,IAAI,CAAC,EAAE,MAAM,GAAG,IAAI,GAAG,OAAO,CAAC,CAAC,GAAG,IAAI,CAAC,CAAC;IAC9C,IAAI,CAAC,IAAI,CAAC,EAAE,MAAM,GAAG,IAAI,GAAG,OAAO,CAAC,CAAC,GAAG,IAAI,CAAC,CAAC;IAC9C,KAAK,CAAC,KAAK,CAAC,EAAE,GAAG,GAAG,OAAO,CAAC,cAAc,CAAC,GAAG,CAAC,CAAC,CAAC;IACjD,MAAM,CAAC,KAAK,CAAC,EAAE,GAAG,GAAG,OAAO,CAAC,cAAc,CAAC,GAAG,CAAC,CAAC,CAAC;IAClD,IAAI,CAAC,IAAI,CAAC,EAAE,MAAM,GAAG,IAAI,GAAG,OAAO,CAAC,cAAc,CAAC,CAAC,CAAC,CAAC,CAAC;CAC1D;AAED,cAAc;AACd,MAAM,WAAW,QAAQ,CAAC,CAAC;IACvB,QAAQ,CAAC,MAAM,EAAE,OAAO,CAAC,IAAI,CAAC,CAAC;IAC/B,KAAK,IAAI,IAAI,CAAC;IACd,KAAK,CAAC,KAAK,EAAE,CAAC,GAAG,IAAI,CAAC;IACtB,KAAK,CAAC,MAAM,CAAC,EAAE,GAAG,GAAG,IAAI,CAAC;CAC7B;AAED,cAAc;AACd,MAAM,WAAW,gBAAgB,CAAC,SAAS,EAAE,SAAS,CAAE,SAAQ,QAAQ,CAAC,SAAS,CAAC,EAAE,QAAQ,CAAC,SAAS,CAAC;IACpG,CAAC,MAAM,CAAC,aAAa,CAAC,IAAI,qBAAqB,CAAC,SAAS,CAAC,CAAC;IAC3D,WAAW,CAAC,OAAO,CAAC,EAAE,wBAAwB,GAAG,cAAc,CAAC,SAAS,CAAC,CAAC;IAC3E,YAAY,CAAC,OAAO,CAAC,EAAE,OAAO,QAAQ,EAAE,eAAe,GAAG,OAAO,QAAQ,EAAE,QAAQ,CAAC;CACvF;AAED,cAAc;AACd,8BAAsB,eAAe,CAAC,CAAC;aAEnB,WAAW,CAAC,OAAO,CAAC,EAAE,wBAAwB,GAAG,cAAc,CAAC,CAAC,CAAC;aAClE,YAAY,CAAC,OAAO,CAAC,EAAE,OAAO,QAAQ,EAAE,eAAe,GAAG,OAAO,QAAQ,EAAE,QAAQ;IAE5F,GAAG,IAAI,CAAC,cAAc,CAAC,CAAC,CAAC,EAAE,cAAc,CAAC,CAAC,CAAC,CAAC;IAG7C,IAAI,CAAC,CAAC,SAAS,MAAM,CAAC,cAAc,EAAE,QAAQ,EAAE,CAAC,EAAE,OAAO,CAAC,EAAE;QAAE,GAAG,CAAC,EAAE,OAAO,CAAA;KAAE;IAG9E,MAAM,CAAC,QAAQ,EAAE,cAAc,CAAC,CAAC,CAAC,EAAE,OAAO,CAAC,EAAE,iBAAiB;IAC/D,WAAW,CAAC,CAAC,SAAS,cAAc,CAAC,GAAG,CAAC,EAAE,MAAM,EAAE;QAAE,QAAQ,EAAE,cAAc,CAAC,CAAC,CAAC,CAAC;QAAC,QAAQ,EAAE,CAAC,CAAA;KAAE,EAAE,OAAO,CAAC,EAAE,iBAAiB;IAInI,SAAS,CAAC,UAAU,CAAC,EAAE,cAAc,CAAC,CAAC,CAAC,CAAC;IACzC,OAAO,CAAC,aAAa;IAIrB,SAAS,CAAC,WAAW,CAAC,EAAE,OAAO,QAAQ,EAAE,QAAQ,CAAC;IAClD,OAAO,CAAC,cAAc;CAGzB;AAED,cAAc;AACd,aAAK,UAAU,CAAC,CAAC,IAAI;IAAE,OAAO,EAAE,CAAC,KAAK,EAAE,CAAC,GAAG,WAAW,CAAC,CAAC,CAAC,KAAK,IAAI,CAAC;IAAC,MAAM,EAAE,CAAC,MAAM,CAAC,EAAE,GAAG,KAAK,IAAI,CAAA;CAAE,CAAC;AAEtG,cAAc;AACd,qBAAa,UAAU,CAAC,SAAS,GAAG,UAAU,EAAE,SAAS,GAAG,SAAS,CAAE,SAAQ,eAAe,CAAC,SAAS,CACpG,YAAW,qBAAqB,CAAC,SAAS,CAAC,EAAE,gBAAgB,CAAC,SAAS,EAAE,SAAS,CAAC;IAEnF,SAAS,CAAC,OAAO,EAAE,SAAS,EAAE,CAAM;IACpC,SAAS,CAAC,MAAM,CAAC,EAAE;QAAE,KAAK,EAAE,GAAG,CAAA;KAAE,CAAC;IAClC,SAAS,CAAC,cAAc,EAAE,OAAO,CAAC,IAAI,CAAC,CAAC;IACxC,SAAS,CAAC,qBAAqB,CAAC,EAAE,CAAC,KAAK,CAAC,EAAE,GAAG,KAAK,IAAI,CAAC;IACxD,SAAS,CAAC,SAAS,EAAE,UAAU,CAAC,cAAc,CAAC,SAAS,CAAC,CAAC,EAAE,CAAM;;IAOlE,IAAW,MAAM,IAAI,OAAO,CAAC,IAAI,CAAC,CAAgC;IACrD,MAAM,CAAC,MAAM,CAAC,EAAE,GAAG;IACzB,KAAK,CAAC,KAAK,EAAE,SAAS;IAOtB,KAAK,CAAC,KAAK,CAAC,EAAE,GAAG;IAOjB,KAAK;IAWL,CAAC,MAAM,CAAC,aAAa,CAAC;IACtB,WAAW,CAAC,OAAO,CAAC,EAAE,wBAAwB;IAO9C,YAAY,CAAC,OAAO,CAAC,EAAE,OAAO,QAAQ,EAAE,eAAe;IAOjD,KAAK,CAAC,CAAC,CAAC,EAAE,GAAG;IACb,MAAM,CAAC,CAAC,CAAC,EAAE,GAAG;IAEd,IAAI,CAAC,IAAI,CAAC,EAAE,MAAM,GAAG,IAAI,GAAG,OAAO,CAAC,SAAS,GAAG,IAAI,CAAC;IACrD,IAAI,CAAC,IAAI,CAAC,EAAE,MAAM,GAAG,IAAI,GAAG,OAAO,CAAC,SAAS,GAAG,IAAI,CAAC;IAC3D,IAAI,CAAC,GAAG,KAAK,EAAE,GAAG,EAAE,GAAG,OAAO,CAAC,cAAc,CAAC,SAAS,CAAC,CAAC;IAchE,SAAS,CAAC,WAAW;CAMxB","file":"interfaces.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/interfaces.js b/igv_component/node_modules/apache-arrow/io/interfaces.js
new file mode 100644
index 0000000000000000000000000000000000000000..364285165eb127a2fc92a8b745fae3a669714935
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/interfaces.js
@@ -0,0 +1,138 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.AsyncQueue = exports.ReadableInterop = exports.ArrowJSON = exports.ITERATOR_DONE = void 0;
+const tslib_1 = require("tslib");
+const adapters_js_1 = tslib_1.__importDefault(require("./adapters.js"));
+/** @ignore */
+exports.ITERATOR_DONE = Object.freeze({ done: true, value: void (0) });
+/** @ignore */
+class ArrowJSON {
+    constructor(_json) {
+        this._json = _json;
+    }
+    get schema() { return this._json['schema']; }
+    get batches() { return (this._json['batches'] || []); }
+    get dictionaries() { return (this._json['dictionaries'] || []); }
+}
+exports.ArrowJSON = ArrowJSON;
+/** @ignore */
+class ReadableInterop {
+    tee() {
+        return this._getDOMStream().tee();
+    }
+    pipe(writable, options) {
+        return this._getNodeStream().pipe(writable, options);
+    }
+    pipeTo(writable, options) { return this._getDOMStream().pipeTo(writable, options); }
+    pipeThrough(duplex, options) {
+        return this._getDOMStream().pipeThrough(duplex, options);
+    }
+    _getDOMStream() {
+        return this._DOMStream || (this._DOMStream = this.toDOMStream());
+    }
+    _getNodeStream() {
+        return this._nodeStream || (this._nodeStream = this.toNodeStream());
+    }
+}
+exports.ReadableInterop = ReadableInterop;
+/** @ignore */
+class AsyncQueue extends ReadableInterop {
+    constructor() {
+        super();
+        this._values = [];
+        this.resolvers = [];
+        this._closedPromise = new Promise((r) => this._closedPromiseResolve = r);
+    }
+    get closed() { return this._closedPromise; }
+    cancel(reason) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () { yield this.return(reason); });
+    }
+    write(value) {
+        if (this._ensureOpen()) {
+            this.resolvers.length <= 0
+                ? (this._values.push(value))
+                : (this.resolvers.shift().resolve({ done: false, value }));
+        }
+    }
+    abort(value) {
+        if (this._closedPromiseResolve) {
+            this.resolvers.length <= 0
+                ? (this._error = { error: value })
+                : (this.resolvers.shift().reject({ done: true, value }));
+        }
+    }
+    close() {
+        if (this._closedPromiseResolve) {
+            const { resolvers } = this;
+            while (resolvers.length > 0) {
+                resolvers.shift().resolve(exports.ITERATOR_DONE);
+            }
+            this._closedPromiseResolve();
+            this._closedPromiseResolve = undefined;
+        }
+    }
+    [Symbol.asyncIterator]() { return this; }
+    toDOMStream(options) {
+        return adapters_js_1.default.toDOMStream((this._closedPromiseResolve || this._error)
+            ? this
+            : this._values, options);
+    }
+    toNodeStream(options) {
+        return adapters_js_1.default.toNodeStream((this._closedPromiseResolve || this._error)
+            ? this
+            : this._values, options);
+    }
+    throw(_) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () { yield this.abort(_); return exports.ITERATOR_DONE; });
+    }
+    return(_) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () { yield this.close(); return exports.ITERATOR_DONE; });
+    }
+    read(size) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () { return (yield this.next(size, 'read')).value; });
+    }
+    peek(size) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () { return (yield this.next(size, 'peek')).value; });
+    }
+    next(..._args) {
+        if (this._values.length > 0) {
+            return Promise.resolve({ done: false, value: this._values.shift() });
+        }
+        else if (this._error) {
+            return Promise.reject({ done: true, value: this._error.error });
+        }
+        else if (!this._closedPromiseResolve) {
+            return Promise.resolve(exports.ITERATOR_DONE);
+        }
+        else {
+            return new Promise((resolve, reject) => {
+                this.resolvers.push({ resolve, reject });
+            });
+        }
+    }
+    _ensureOpen() {
+        if (this._closedPromiseResolve) {
+            return true;
+        }
+        throw new Error(`AsyncQueue is closed`);
+    }
+}
+exports.AsyncQueue = AsyncQueue;
+
+//# sourceMappingURL=interfaces.js.map
diff --git a/igv_component/node_modules/apache-arrow/io/interfaces.js.map b/igv_component/node_modules/apache-arrow/io/interfaces.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..0324bbc1eb00ca3c731e8cf955eeb9124bb8c0c8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/interfaces.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/interfaces.mjs b/igv_component/node_modules/apache-arrow/io/interfaces.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..432a2d6282a5c6c98c01f7096d75a95c4e75f0af
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/interfaces.mjs
@@ -0,0 +1,132 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { __awaiter } from "tslib";
+import streamAdapters from './adapters.mjs';
+/** @ignore */
+export const ITERATOR_DONE = Object.freeze({ done: true, value: void (0) });
+/** @ignore */
+export class ArrowJSON {
+    constructor(_json) {
+        this._json = _json;
+    }
+    get schema() { return this._json['schema']; }
+    get batches() { return (this._json['batches'] || []); }
+    get dictionaries() { return (this._json['dictionaries'] || []); }
+}
+/** @ignore */
+export class ReadableInterop {
+    tee() {
+        return this._getDOMStream().tee();
+    }
+    pipe(writable, options) {
+        return this._getNodeStream().pipe(writable, options);
+    }
+    pipeTo(writable, options) { return this._getDOMStream().pipeTo(writable, options); }
+    pipeThrough(duplex, options) {
+        return this._getDOMStream().pipeThrough(duplex, options);
+    }
+    _getDOMStream() {
+        return this._DOMStream || (this._DOMStream = this.toDOMStream());
+    }
+    _getNodeStream() {
+        return this._nodeStream || (this._nodeStream = this.toNodeStream());
+    }
+}
+/** @ignore */
+export class AsyncQueue extends ReadableInterop {
+    constructor() {
+        super();
+        this._values = [];
+        this.resolvers = [];
+        this._closedPromise = new Promise((r) => this._closedPromiseResolve = r);
+    }
+    get closed() { return this._closedPromise; }
+    cancel(reason) {
+        return __awaiter(this, void 0, void 0, function* () { yield this.return(reason); });
+    }
+    write(value) {
+        if (this._ensureOpen()) {
+            this.resolvers.length <= 0
+                ? (this._values.push(value))
+                : (this.resolvers.shift().resolve({ done: false, value }));
+        }
+    }
+    abort(value) {
+        if (this._closedPromiseResolve) {
+            this.resolvers.length <= 0
+                ? (this._error = { error: value })
+                : (this.resolvers.shift().reject({ done: true, value }));
+        }
+    }
+    close() {
+        if (this._closedPromiseResolve) {
+            const { resolvers } = this;
+            while (resolvers.length > 0) {
+                resolvers.shift().resolve(ITERATOR_DONE);
+            }
+            this._closedPromiseResolve();
+            this._closedPromiseResolve = undefined;
+        }
+    }
+    [Symbol.asyncIterator]() { return this; }
+    toDOMStream(options) {
+        return streamAdapters.toDOMStream((this._closedPromiseResolve || this._error)
+            ? this
+            : this._values, options);
+    }
+    toNodeStream(options) {
+        return streamAdapters.toNodeStream((this._closedPromiseResolve || this._error)
+            ? this
+            : this._values, options);
+    }
+    throw(_) {
+        return __awaiter(this, void 0, void 0, function* () { yield this.abort(_); return ITERATOR_DONE; });
+    }
+    return(_) {
+        return __awaiter(this, void 0, void 0, function* () { yield this.close(); return ITERATOR_DONE; });
+    }
+    read(size) {
+        return __awaiter(this, void 0, void 0, function* () { return (yield this.next(size, 'read')).value; });
+    }
+    peek(size) {
+        return __awaiter(this, void 0, void 0, function* () { return (yield this.next(size, 'peek')).value; });
+    }
+    next(..._args) {
+        if (this._values.length > 0) {
+            return Promise.resolve({ done: false, value: this._values.shift() });
+        }
+        else if (this._error) {
+            return Promise.reject({ done: true, value: this._error.error });
+        }
+        else if (!this._closedPromiseResolve) {
+            return Promise.resolve(ITERATOR_DONE);
+        }
+        else {
+            return new Promise((resolve, reject) => {
+                this.resolvers.push({ resolve, reject });
+            });
+        }
+    }
+    _ensureOpen() {
+        if (this._closedPromiseResolve) {
+            return true;
+        }
+        throw new Error(`AsyncQueue is closed`);
+    }
+}
+
+//# sourceMappingURL=interfaces.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/io/interfaces.mjs.map b/igv_component/node_modules/apache-arrow/io/interfaces.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..7c3f80c1e6d25716e063995a69eca66150728877
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/interfaces.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/interfaces.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;AAErB,OAAO,cAAc,MAAM,eAAe,CAAC;AAE3C,cAAc;AACd,MAAM,CAAC,MAAM,aAAa,GAAQ,MAAM,CAAC,MAAM,CAAC,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,KAAK,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC;AASjF,cAAc;AACd,MAAM,OAAO,SAAS;IAClB,YAAoB,KAAoB;QAApB,UAAK,GAAL,KAAK,CAAe;IAAI,CAAC;IAC7C,IAAW,MAAM,KAAU,OAAO,IAAI,CAAC,KAAK,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC;IACzD,IAAW,OAAO,KAAY,OAAO,CAAC,IAAI,CAAC,KAAK,CAAC,SAAS,CAAC,IAAI,EAAE,CAAU,CAAC,CAAC,CAAC;IAC9E,IAAW,YAAY,KAAY,OAAO,CAAC,IAAI,CAAC,KAAK,CAAC,cAAc,CAAC,IAAI,EAAE,CAAU,CAAC,CAAC,CAAC;CAC3F;AA8BD,cAAc;AACd,MAAM,OAAgB,eAAe;IAK1B,GAAG;QACN,OAAO,IAAI,CAAC,aAAa,EAAE,CAAC,GAAG,EAAE,CAAC;IACtC,CAAC;IACM,IAAI,CAAkC,QAAW,EAAE,OAA2B;QACjF,OAAO,IAAI,CAAC,cAAc,EAAE,CAAC,IAAI,CAAC,QAAQ,EAAE,OAAO,CAAC,CAAC;IACzD,CAAC;IACM,MAAM,CAAC,QAA2B,EAAE,OAA2B,IAAI,OAAO,IAAI,CAAC,aAAa,EAAE,CAAC,MAAM,CAAC,QAAQ,EAAE,OAAO,CAAC,CAAC,CAAC,CAAC;IAC3H,WAAW,CAAgC,MAAoD,EAAE,OAA2B;QAC/H,OAAO,IAAI,CAAC,aAAa,EAAE,CAAC,WAAW,CAAC,MAAM,EAAE,OAAO,CAAC,CAAC;IAC7D,CAAC;IAGO,aAAa;QACjB,OAAO,IAAI,CAAC,UAAU,IAAI,CAAC,IAAI,CAAC,UAAU,GAAG,IAAI,CAAC,WAAW,EAAE,CAAC,CAAC;IACrE,CAAC;IAGO,cAAc;QAClB,OAAO,IAAI,CAAC,WAAW,IAAI,CAAC,IAAI,CAAC,WAAW,GAAG,IAAI,CAAC,YAAY,EAAE,CAAC,CAAC;IACxE,CAAC;CACJ;AAKD,cAAc;AACd,MAAM,OAAO,UAA0D,SAAQ,eAA0B;IASrG;QACI,KAAK,EAAE,CAAC;QAPF,YAAO,GAAgB,EAAE,CAAC;QAI1B,cAAS,GAA4C,EAAE,CAAC;QAI9D,IAAI,CAAC,cAAc,GAAG,IAAI,OAAO,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,IAAI,CAAC,qBAAqB,GAAG,CAAC,CAAC,CAAC;IAC7E,CAAC;IAED,IAAW,MAAM,KAAoB,OAAO,IAAI,CAAC,cAAc,CAAC,CAAC,CAAC;IACrD,MAAM,CAAC,MAAY;8DAAI,MAAM,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC;KAAA;IACzD,KAAK,CAAC,KAAgB;QACzB,IAAI,IAAI,CAAC,WAAW,EAAE,EAAE;YACpB,IAAI,CAAC,SAAS,CAAC,MAAM,IAAI,CAAC;gBACtB,CAAC,CAAC,CAAC,IAAI,CAAC,OAAO,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC;gBAC5B,CAAC,CAAC,CAAC,IAAI,CAAC,SAAS,CAAC,KAAK,EAAG,CAAC,OAAO,CAAC,EAAE,IAAI,EAAE,KAAK,EAAE,KAAK,EAAS,CAAC,CAAC,CAAC;SAC1E;IACL,CAAC;IACM,KAAK,CAAC,KAAW;QACpB,IAAI,IAAI,CAAC,qBAAqB,EAAE;YAC5B,IAAI,CAAC,SAAS,CAAC,MAAM,IAAI,CAAC;gBACtB,CAAC,CAAC,CAAC,IAAI,CAAC,MAAM,GAAG,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC;gBAClC,CAAC,CAAC,CAAC,IAAI,CAAC,SAAS,CAAC,KAAK,EAAG,CAAC,MAAM,CAAC,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,CAAC,CAAC,CAAC;SACjE;IACL,CAAC;IACM,KAAK;QACR,IAAI,IAAI,CAAC,qBAAqB,EAAE;YAC5B,MAAM,EAAE,SAAS,EAAE,GAAG,IAAI,CAAC;YAC3B,OAAO,SAAS,CAAC,MAAM,GAAG,CAAC,EAAE;gBACzB,SAAS,CAAC,KAAK,EAAG,CAAC,OAAO,CAAC,aAAa,CAAC,CAAC;aAC7C;YACD,IAAI,CAAC,qBAAqB,EAAE,CAAC;YAC7B,IAAI,CAAC,qBAAqB,GAAG,SAAS,CAAC;SAC1C;IACL,CAAC;IAEM,CAAC,MAAM,CAAC,aAAa,CAAC,KAAK,OAAO,IAAI,CAAC,CAAC,CAAC;IACzC,WAAW,CAAC,OAAkC;QACjD,OAAO,cAAc,CAAC,WAAW,CAC7B,CAAC,IAAI,CAAC,qBAAqB,IAAI,IAAI,CAAC,MAAM,CAAC;YACvC,CAAC,CAAE,IAAiC;YACpC,CAAC,CAAE,IAAI,CAAC,OAAsC,EAClD,OAAO,CAAC,CAAC;IACjB,CAAC;IACM,YAAY,CAAC,OAA0C;QAC1D,OAAO,cAAc,CAAC,YAAY,CAC9B,CAAC,IAAI,CAAC,qBAAqB,IAAI,IAAI,CAAC,MAAM,CAAC;YACvC,CAAC,CAAE,IAAiC;YACpC,CAAC,CAAE,IAAI,CAAC,OAAsC,EAClD,OAAO,CAAC,CAAC;IACjB,CAAC;IACY,KAAK,CAAC,CAAO;8DAAI,MAAM,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC,OAAO,aAAa,CAAC,CAAC,CAAC;KAAA;IAC7D,MAAM,CAAC,CAAO;8DAAI,MAAM,IAAI,CAAC,KAAK,EAAE,CAAC,CAAC,OAAO,aAAa,CAAC,CAAC,CAAC;KAAA;IAE7D,IAAI,CAAC,IAAoB;8DAA+B,OAAO,CAAC,MAAM,IAAI,CAAC,IAAI,CAAC,IAAI,EAAE,MAAM,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC;KAAA;IACvG,IAAI,CAAC,IAAoB;8DAA+B,OAAO,CAAC,MAAM,IAAI,CAAC,IAAI,CAAC,IAAI,EAAE,MAAM,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC;KAAA;IAC7G,IAAI,CAAC,GAAG,KAAY;QACvB,IAAI,IAAI,CAAC,OAAO,CAAC,MAAM,GAAG,CAAC,EAAE;YACzB,OAAO,OAAO,CAAC,OAAO,CAAC,EAAE,IAAI,EAAE,KAAK,EAAE,KAAK,EAAE,IAAI,CAAC,OAAO,CAAC,KAAK,EAAG,EAAS,CAAC,CAAC;SAChF;aAAM,IAAI,IAAI,CAAC,MAAM,EAAE;YACpB,OAAO,OAAO,CAAC,MAAM,CAAC,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,IAAI,CAAC,MAAM,CAAC,KAAK,EAAE,CAAC,CAAC;SACnE;aAAM,IAAI,CAAC,IAAI,CAAC,qBAAqB,EAAE;YACpC,OAAO,OAAO,CAAC,OAAO,CAAC,aAAa,CAAC,CAAC;SACzC;aAAM;YACH,OAAO,IAAI,OAAO,CAA4B,CAAC,OAAO,EAAE,MAAM,EAAE,EAAE;gBAC9D,IAAI,CAAC,SAAS,CAAC,IAAI,CAAC,EAAE,OAAO,EAAE,MAAM,EAAE,CAAC,CAAC;YAC7C,CAAC,CAAC,CAAC;SACN;IACL,CAAC;IAES,WAAW;QACjB,IAAI,IAAI,CAAC,qBAAqB,EAAE;YAC5B,OAAO,IAAI,CAAC;SACf;QACD,MAAM,IAAI,KAAK,CAAC,sBAAsB,CAAC,CAAC;IAC5C,CAAC;CACJ","file":"interfaces.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/node/builder.d.ts b/igv_component/node_modules/apache-arrow/io/node/builder.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2dd6c15a816d91579e27a7b7c3399d952827c1f5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/builder.d.ts
@@ -0,0 +1,31 @@
+/// <reference types="node" />
+import { Duplex } from 'stream';
+import { DataType } from '../../type.js';
+import { Builder, BuilderOptions } from '../../builder.js';
+/** @ignore */
+export interface BuilderDuplexOptions<T extends DataType = any, TNull = any> extends BuilderOptions<T, TNull> {
+    autoDestroy?: boolean;
+    highWaterMark?: number;
+    queueingStrategy?: 'bytes' | 'count';
+    dictionaryHashFunction?: (value: any) => string | number;
+    valueToChildTypeId?: (builder: Builder<T, TNull>, value: any, offset: number) => number;
+}
+/** @ignore */
+export declare function builderThroughNodeStream<T extends DataType = any, TNull = any>(options: BuilderDuplexOptions<T, TNull>): BuilderDuplex<any, TNull>;
+/** @ignore */
+declare type CB = (error?: Error | null | undefined) => void;
+/** @ignore */
+declare class BuilderDuplex<T extends DataType = any, TNull = any> extends Duplex {
+    private _finished;
+    private _numChunks;
+    private _desiredSize;
+    private _builder;
+    private _getSize;
+    constructor(builder: Builder<T, TNull>, options: BuilderDuplexOptions<T, TNull>);
+    _read(size: number): void;
+    _final(cb?: CB): void;
+    _write(value: any, _: string, cb?: CB): boolean;
+    _destroy(err: Error | null, cb?: (error: Error | null) => void): void;
+    private _maybeFlush;
+}
+export {};
diff --git a/igv_component/node_modules/apache-arrow/io/node/builder.d.ts.map b/igv_component/node_modules/apache-arrow/io/node/builder.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..9ec1c99ed0c85c0417a6696be04dd680a5c6a606
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/builder.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/node/builder.ts"],"names":[],"mappings":";AAiBA,OAAO,EAAE,MAAM,EAAE,MAAM,QAAQ,CAAC;AAChC,OAAO,EAAE,QAAQ,EAAE,MAAM,eAAe,CAAC;AACzC,OAAO,EAAE,OAAO,EAAE,cAAc,EAAE,MAAM,kBAAkB,CAAC;AAG3D,cAAc;AACd,MAAM,WAAW,oBAAoB,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,cAAc,CAAC,CAAC,EAAE,KAAK,CAAC;IACzG,WAAW,CAAC,EAAE,OAAO,CAAC;IACtB,aAAa,CAAC,EAAE,MAAM,CAAC;IACvB,gBAAgB,CAAC,EAAE,OAAO,GAAG,OAAO,CAAC;IACrC,sBAAsB,CAAC,EAAE,CAAC,KAAK,EAAE,GAAG,KAAK,MAAM,GAAG,MAAM,CAAC;IACzD,kBAAkB,CAAC,EAAE,CAAC,OAAO,EAAE,OAAO,CAAC,CAAC,EAAE,KAAK,CAAC,EAAE,KAAK,EAAE,GAAG,EAAE,MAAM,EAAE,MAAM,KAAK,MAAM,CAAC;CAC3F;AAED,cAAc;AACd,wBAAgB,wBAAwB,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,KAAK,GAAG,GAAG,EAAE,OAAO,EAAE,oBAAoB,CAAC,CAAC,EAAE,KAAK,CAAC,6BAEtH;AAED,cAAc;AACd,aAAK,EAAE,GAAG,CAAC,KAAK,CAAC,EAAE,KAAK,GAAG,IAAI,GAAG,SAAS,KAAK,IAAI,CAAC;AAErD,cAAc;AACd,cAAM,aAAa,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,MAAM;IAErE,OAAO,CAAC,SAAS,CAAU;IAC3B,OAAO,CAAC,UAAU,CAAS;IAC3B,OAAO,CAAC,YAAY,CAAS;IAC7B,OAAO,CAAC,QAAQ,CAAoB;IACpC,OAAO,CAAC,QAAQ,CAAyC;gBAE7C,OAAO,EAAE,OAAO,CAAC,CAAC,EAAE,KAAK,CAAC,EAAE,OAAO,EAAE,oBAAoB,CAAC,CAAC,EAAE,KAAK,CAAC;IAa/E,KAAK,CAAC,IAAI,EAAE,MAAM;IAGlB,MAAM,CAAC,EAAE,CAAC,EAAE,EAAE;IAId,MAAM,CAAC,KAAK,EAAE,GAAG,EAAE,CAAC,EAAE,MAAM,EAAE,EAAE,CAAC,EAAE,EAAE;IAQrC,QAAQ,CAAC,GAAG,EAAE,KAAK,GAAG,IAAI,EAAE,EAAE,CAAC,EAAE,CAAC,KAAK,EAAE,KAAK,GAAG,IAAI,KAAK,IAAI;IAI9D,OAAO,CAAC,WAAW;CAetB","file":"builder.d.ts","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/node/builder.js b/igv_component/node_modules/apache-arrow/io/node/builder.js
new file mode 100644
index 0000000000000000000000000000000000000000..8ab25a10ab4527dc66e82563c2570841a86d6e8c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/builder.js
@@ -0,0 +1,74 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.builderThroughNodeStream = void 0;
+const stream_1 = require("stream");
+const factories_js_1 = require("../../factories.js");
+/** @ignore */
+function builderThroughNodeStream(options) {
+    return new BuilderDuplex((0, factories_js_1.makeBuilder)(options), options);
+}
+exports.builderThroughNodeStream = builderThroughNodeStream;
+/** @ignore */
+class BuilderDuplex extends stream_1.Duplex {
+    constructor(builder, options) {
+        const { queueingStrategy = 'count', autoDestroy = true } = options;
+        const { highWaterMark = queueingStrategy !== 'bytes' ? 1000 : Math.pow(2, 14) } = options;
+        super({ autoDestroy, highWaterMark: 1, allowHalfOpen: true, writableObjectMode: true, readableObjectMode: true });
+        this._numChunks = 0;
+        this._finished = false;
+        this._builder = builder;
+        this._desiredSize = highWaterMark;
+        this._getSize = queueingStrategy !== 'bytes' ? builderLength : builderByteLength;
+    }
+    _read(size) {
+        this._maybeFlush(this._builder, this._desiredSize = size);
+    }
+    _final(cb) {
+        this._maybeFlush(this._builder.finish(), this._desiredSize);
+        cb && cb();
+    }
+    _write(value, _, cb) {
+        const result = this._maybeFlush(this._builder.append(value), this._desiredSize);
+        cb && cb();
+        return result;
+    }
+    _destroy(err, cb) {
+        this._builder.clear();
+        cb && cb(err);
+    }
+    _maybeFlush(builder, size) {
+        if (this._getSize(builder) >= size) {
+            ++this._numChunks && this.push(builder.toVector());
+        }
+        if (builder.finished) {
+            if (builder.length > 0 || this._numChunks === 0) {
+                ++this._numChunks && this.push(builder.toVector());
+            }
+            if (!this._finished && (this._finished = true)) {
+                this.push(null);
+            }
+            return false;
+        }
+        return this._getSize(builder) < this.writableHighWaterMark;
+    }
+}
+/** @ignore */ const builderLength = (builder) => builder.length;
+/** @ignore */ const builderByteLength = (builder) => builder.byteLength;
+
+//# sourceMappingURL=builder.js.map
diff --git a/igv_component/node_modules/apache-arrow/io/node/builder.js.map b/igv_component/node_modules/apache-arrow/io/node/builder.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..11b8805002a3dc561c19692eb8a45e0c16925eb2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/builder.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/node/builder.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,mCAAgC;AAGhC,qDAAiD;AAWjD,cAAc;AACd,SAAgB,wBAAwB,CAAwC,OAAuC;IACnH,OAAO,IAAI,aAAa,CAAC,IAAA,0BAAW,EAAC,OAAO,CAAC,EAAE,OAAO,CAAC,CAAC;AAC5D,CAAC;AAFD,4DAEC;AAKD,cAAc;AACd,MAAM,aAAqD,SAAQ,eAAM;IAQrE,YAAY,OAA0B,EAAE,OAAuC;QAE3E,MAAM,EAAE,gBAAgB,GAAG,OAAO,EAAE,WAAW,GAAG,IAAI,EAAE,GAAG,OAAO,CAAC;QACnE,MAAM,EAAE,aAAa,GAAG,gBAAgB,KAAK,OAAO,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,SAAA,CAAC,EAAI,EAAE,CAAA,EAAE,GAAG,OAAO,CAAC;QAElF,KAAK,CAAC,EAAE,WAAW,EAAE,aAAa,EAAE,CAAC,EAAE,aAAa,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,CAAC,CAAC;QAElH,IAAI,CAAC,UAAU,GAAG,CAAC,CAAC;QACpB,IAAI,CAAC,SAAS,GAAG,KAAK,CAAC;QACvB,IAAI,CAAC,QAAQ,GAAG,OAAO,CAAC;QACxB,IAAI,CAAC,YAAY,GAAG,aAAa,CAAC;QAClC,IAAI,CAAC,QAAQ,GAAG,gBAAgB,KAAK,OAAO,CAAC,CAAC,CAAC,aAAa,CAAC,CAAC,CAAC,iBAAiB,CAAC;IACrF,CAAC;IACD,KAAK,CAAC,IAAY;QACd,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,QAAQ,EAAE,IAAI,CAAC,YAAY,GAAG,IAAI,CAAC,CAAC;IAC9D,CAAC;IACD,MAAM,CAAC,EAAO;QACV,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,QAAQ,CAAC,MAAM,EAAE,EAAE,IAAI,CAAC,YAAY,CAAC,CAAC;QAC5D,EAAE,IAAI,EAAE,EAAE,CAAC;IACf,CAAC;IACD,MAAM,CAAC,KAAU,EAAE,CAAS,EAAE,EAAO;QACjC,MAAM,MAAM,GAAG,IAAI,CAAC,WAAW,CAC3B,IAAI,CAAC,QAAQ,CAAC,MAAM,CAAC,KAAK,CAAC,EAC3B,IAAI,CAAC,YAAY,CACpB,CAAC;QACF,EAAE,IAAI,EAAE,EAAE,CAAC;QACX,OAAO,MAAM,CAAC;IAClB,CAAC;IACD,QAAQ,CAAC,GAAiB,EAAE,EAAkC;QAC1D,IAAI,CAAC,QAAQ,CAAC,KAAK,EAAE,CAAC;QACtB,EAAE,IAAI,EAAE,CAAC,GAAG,CAAC,CAAC;IAClB,CAAC;IACO,WAAW,CAAC,OAA0B,EAAE,IAAY;QACxD,IAAI,IAAI,CAAC,QAAQ,CAAC,OAAO,CAAC,IAAI,IAAI,EAAE;YAChC,EAAE,IAAI,CAAC,UAAU,IAAI,IAAI,CAAC,IAAI,CAAC,OAAO,CAAC,QAAQ,EAAE,CAAC,CAAC;SACtD;QACD,IAAI,OAAO,CAAC,QAAQ,EAAE;YAClB,IAAI,OAAO,CAAC,MAAM,GAAG,CAAC,IAAI,IAAI,CAAC,UAAU,KAAK,CAAC,EAAE;gBAC7C,EAAE,IAAI,CAAC,UAAU,IAAI,IAAI,CAAC,IAAI,CAAC,OAAO,CAAC,QAAQ,EAAE,CAAC,CAAC;aACtD;YACD,IAAI,CAAC,IAAI,CAAC,SAAS,IAAI,CAAC,IAAI,CAAC,SAAS,GAAG,IAAI,CAAC,EAAE;gBAC5C,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;aACnB;YACD,OAAO,KAAK,CAAC;SAChB;QACD,OAAO,IAAI,CAAC,QAAQ,CAAC,OAAO,CAAC,GAAG,IAAI,CAAC,qBAAqB,CAAC;IAC/D,CAAC;CACJ;AAED,cAAc,CAAC,MAAM,aAAa,GAAG,CAA2B,OAAmB,EAAE,EAAE,CAAC,OAAO,CAAC,MAAM,CAAC;AACvG,cAAc,CAAC,MAAM,iBAAiB,GAAG,CAA2B,OAAmB,EAAE,EAAE,CAAC,OAAO,CAAC,UAAU,CAAC","file":"builder.js","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/node/builder.mjs b/igv_component/node_modules/apache-arrow/io/node/builder.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..350743c143ab8596ea0641bc697e333696f19d56
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/builder.mjs
@@ -0,0 +1,70 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Duplex } from 'stream';
+import { makeBuilder } from '../../factories.mjs';
+/** @ignore */
+export function builderThroughNodeStream(options) {
+    return new BuilderDuplex(makeBuilder(options), options);
+}
+/** @ignore */
+class BuilderDuplex extends Duplex {
+    constructor(builder, options) {
+        const { queueingStrategy = 'count', autoDestroy = true } = options;
+        const { highWaterMark = queueingStrategy !== 'bytes' ? 1000 : Math.pow(2, 14) } = options;
+        super({ autoDestroy, highWaterMark: 1, allowHalfOpen: true, writableObjectMode: true, readableObjectMode: true });
+        this._numChunks = 0;
+        this._finished = false;
+        this._builder = builder;
+        this._desiredSize = highWaterMark;
+        this._getSize = queueingStrategy !== 'bytes' ? builderLength : builderByteLength;
+    }
+    _read(size) {
+        this._maybeFlush(this._builder, this._desiredSize = size);
+    }
+    _final(cb) {
+        this._maybeFlush(this._builder.finish(), this._desiredSize);
+        cb && cb();
+    }
+    _write(value, _, cb) {
+        const result = this._maybeFlush(this._builder.append(value), this._desiredSize);
+        cb && cb();
+        return result;
+    }
+    _destroy(err, cb) {
+        this._builder.clear();
+        cb && cb(err);
+    }
+    _maybeFlush(builder, size) {
+        if (this._getSize(builder) >= size) {
+            ++this._numChunks && this.push(builder.toVector());
+        }
+        if (builder.finished) {
+            if (builder.length > 0 || this._numChunks === 0) {
+                ++this._numChunks && this.push(builder.toVector());
+            }
+            if (!this._finished && (this._finished = true)) {
+                this.push(null);
+            }
+            return false;
+        }
+        return this._getSize(builder) < this.writableHighWaterMark;
+    }
+}
+/** @ignore */ const builderLength = (builder) => builder.length;
+/** @ignore */ const builderByteLength = (builder) => builder.byteLength;
+
+//# sourceMappingURL=builder.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/io/node/builder.mjs.map b/igv_component/node_modules/apache-arrow/io/node/builder.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..86d3687e48acf756e22754524deabd77fc42f384
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/builder.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/node/builder.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,EAAE,MAAM,EAAE,MAAM,QAAQ,CAAC;AAGhC,OAAO,EAAE,WAAW,EAAE,MAAM,oBAAoB,CAAC;AAWjD,cAAc;AACd,MAAM,UAAU,wBAAwB,CAAwC,OAAuC;IACnH,OAAO,IAAI,aAAa,CAAC,WAAW,CAAC,OAAO,CAAC,EAAE,OAAO,CAAC,CAAC;AAC5D,CAAC;AAKD,cAAc;AACd,MAAM,aAAqD,SAAQ,MAAM;IAQrE,YAAY,OAA0B,EAAE,OAAuC;QAE3E,MAAM,EAAE,gBAAgB,GAAG,OAAO,EAAE,WAAW,GAAG,IAAI,EAAE,GAAG,OAAO,CAAC;QACnE,MAAM,EAAE,aAAa,GAAG,gBAAgB,KAAK,OAAO,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,SAAA,CAAC,EAAI,EAAE,CAAA,EAAE,GAAG,OAAO,CAAC;QAElF,KAAK,CAAC,EAAE,WAAW,EAAE,aAAa,EAAE,CAAC,EAAE,aAAa,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,kBAAkB,EAAE,IAAI,EAAE,CAAC,CAAC;QAElH,IAAI,CAAC,UAAU,GAAG,CAAC,CAAC;QACpB,IAAI,CAAC,SAAS,GAAG,KAAK,CAAC;QACvB,IAAI,CAAC,QAAQ,GAAG,OAAO,CAAC;QACxB,IAAI,CAAC,YAAY,GAAG,aAAa,CAAC;QAClC,IAAI,CAAC,QAAQ,GAAG,gBAAgB,KAAK,OAAO,CAAC,CAAC,CAAC,aAAa,CAAC,CAAC,CAAC,iBAAiB,CAAC;IACrF,CAAC;IACD,KAAK,CAAC,IAAY;QACd,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,QAAQ,EAAE,IAAI,CAAC,YAAY,GAAG,IAAI,CAAC,CAAC;IAC9D,CAAC;IACD,MAAM,CAAC,EAAO;QACV,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,QAAQ,CAAC,MAAM,EAAE,EAAE,IAAI,CAAC,YAAY,CAAC,CAAC;QAC5D,EAAE,IAAI,EAAE,EAAE,CAAC;IACf,CAAC;IACD,MAAM,CAAC,KAAU,EAAE,CAAS,EAAE,EAAO;QACjC,MAAM,MAAM,GAAG,IAAI,CAAC,WAAW,CAC3B,IAAI,CAAC,QAAQ,CAAC,MAAM,CAAC,KAAK,CAAC,EAC3B,IAAI,CAAC,YAAY,CACpB,CAAC;QACF,EAAE,IAAI,EAAE,EAAE,CAAC;QACX,OAAO,MAAM,CAAC;IAClB,CAAC;IACD,QAAQ,CAAC,GAAiB,EAAE,EAAkC;QAC1D,IAAI,CAAC,QAAQ,CAAC,KAAK,EAAE,CAAC;QACtB,EAAE,IAAI,EAAE,CAAC,GAAG,CAAC,CAAC;IAClB,CAAC;IACO,WAAW,CAAC,OAA0B,EAAE,IAAY;QACxD,IAAI,IAAI,CAAC,QAAQ,CAAC,OAAO,CAAC,IAAI,IAAI,EAAE;YAChC,EAAE,IAAI,CAAC,UAAU,IAAI,IAAI,CAAC,IAAI,CAAC,OAAO,CAAC,QAAQ,EAAE,CAAC,CAAC;SACtD;QACD,IAAI,OAAO,CAAC,QAAQ,EAAE;YAClB,IAAI,OAAO,CAAC,MAAM,GAAG,CAAC,IAAI,IAAI,CAAC,UAAU,KAAK,CAAC,EAAE;gBAC7C,EAAE,IAAI,CAAC,UAAU,IAAI,IAAI,CAAC,IAAI,CAAC,OAAO,CAAC,QAAQ,EAAE,CAAC,CAAC;aACtD;YACD,IAAI,CAAC,IAAI,CAAC,SAAS,IAAI,CAAC,IAAI,CAAC,SAAS,GAAG,IAAI,CAAC,EAAE;gBAC5C,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;aACnB;YACD,OAAO,KAAK,CAAC;SAChB;QACD,OAAO,IAAI,CAAC,QAAQ,CAAC,OAAO,CAAC,GAAG,IAAI,CAAC,qBAAqB,CAAC;IAC/D,CAAC;CACJ;AAED,cAAc,CAAC,MAAM,aAAa,GAAG,CAA2B,OAAmB,EAAE,EAAE,CAAC,OAAO,CAAC,MAAM,CAAC;AACvG,cAAc,CAAC,MAAM,iBAAiB,GAAG,CAA2B,OAAmB,EAAE,EAAE,CAAC,OAAO,CAAC,UAAU,CAAC","file":"builder.js","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/node/iterable.d.ts b/igv_component/node_modules/apache-arrow/io/node/iterable.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2c23bc78f8d9016fdc16651e066adec3208bd232
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/iterable.d.ts
@@ -0,0 +1,7 @@
+/// <reference types="node" />
+import { Readable } from 'stream';
+/** @ignore */
+declare type ReadableOptions = import('stream').ReadableOptions;
+/** @ignore */
+export declare function toNodeStream<T>(source: Iterable<T> | AsyncIterable<T>, options?: ReadableOptions): Readable;
+export {};
diff --git a/igv_component/node_modules/apache-arrow/io/node/iterable.d.ts.map b/igv_component/node_modules/apache-arrow/io/node/iterable.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..3331096333edcf23899b62ea2967018e9f223fa3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/iterable.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/node/iterable.ts"],"names":[],"mappings":";AAiBA,OAAO,EAAE,QAAQ,EAAE,MAAM,QAAQ,CAAC;AAGlC,cAAc;AACd,aAAK,eAAe,GAAG,OAAO,QAAQ,EAAE,eAAe,CAAC;AAMxD,cAAc;AACd,wBAAgB,YAAY,CAAC,CAAC,EAAE,MAAM,EAAE,QAAQ,CAAC,CAAC,CAAC,GAAG,aAAa,CAAC,CAAC,CAAC,EAAE,OAAO,CAAC,EAAE,eAAe,GAAG,QAAQ,CAK3G","file":"iterable.d.ts","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/node/iterable.js b/igv_component/node_modules/apache-arrow/io/node/iterable.js
new file mode 100644
index 0000000000000000000000000000000000000000..c7533e4c3b2601127b8e74918728b8a3607a2250
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/iterable.js
@@ -0,0 +1,113 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.toNodeStream = void 0;
+const tslib_1 = require("tslib");
+const stream_1 = require("stream");
+const compat_js_1 = require("../../util/compat.js");
+/** @ignore */
+function toNodeStream(source, options) {
+    if ((0, compat_js_1.isAsyncIterable)(source)) {
+        return new AsyncIterableReadable(source[Symbol.asyncIterator](), options);
+    }
+    if ((0, compat_js_1.isIterable)(source)) {
+        return new IterableReadable(source[Symbol.iterator](), options);
+    }
+    /* istanbul ignore next */
+    throw new Error(`toNodeStream() must be called with an Iterable or AsyncIterable`);
+}
+exports.toNodeStream = toNodeStream;
+/** @ignore */
+class IterableReadable extends stream_1.Readable {
+    constructor(it, options) {
+        super(options);
+        this._iterator = it;
+        this._pulling = false;
+        this._bytesMode = !options || !options.objectMode;
+    }
+    _read(size) {
+        const it = this._iterator;
+        if (it && !this._pulling && (this._pulling = true)) {
+            this._pulling = this._pull(size, it);
+        }
+    }
+    _destroy(e, cb) {
+        const it = this._iterator;
+        let fn;
+        it && (fn = e != null && it.throw || it.return);
+        fn === null || fn === void 0 ? void 0 : fn.call(it, e);
+        cb && cb(null);
+    }
+    _pull(size, it) {
+        const bm = this._bytesMode;
+        let r = null;
+        while (this.readable && !(r = it.next(bm ? size : null)).done) {
+            if (size != null) {
+                size -= (bm && ArrayBuffer.isView(r.value) ? r.value.byteLength : 1);
+            }
+            if (!this.push(r.value) || size <= 0) {
+                break;
+            }
+        }
+        if (((r === null || r === void 0 ? void 0 : r.done) || !this.readable) && (this.push(null) || true)) {
+            it.return && it.return();
+        }
+        return !this.readable;
+    }
+}
+/** @ignore */
+class AsyncIterableReadable extends stream_1.Readable {
+    constructor(it, options) {
+        super(options);
+        this._iterator = it;
+        this._pulling = false;
+        this._bytesMode = !options || !options.objectMode;
+    }
+    _read(size) {
+        const it = this._iterator;
+        if (it && !this._pulling && (this._pulling = true)) {
+            (() => tslib_1.__awaiter(this, void 0, void 0, function* () { return this._pulling = yield this._pull(size, it); }))();
+        }
+    }
+    _destroy(e, cb) {
+        const it = this._iterator;
+        let fn;
+        it && (fn = e != null && it.throw || it.return);
+        (fn === null || fn === void 0 ? void 0 : fn.call(it, e).then(() => cb && cb(null))) || (cb && cb(null));
+    }
+    _pull(size, it) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            const bm = this._bytesMode;
+            let r = null;
+            while (this.readable && !(r = yield it.next(bm ? size : null)).done) {
+                if (size != null) {
+                    size -= (bm && ArrayBuffer.isView(r.value) ? r.value.byteLength : 1);
+                }
+                if (!this.push(r.value) || size <= 0) {
+                    break;
+                }
+            }
+            if (((r === null || r === void 0 ? void 0 : r.done) || !this.readable) && (this.push(null) || true)) {
+                it.return && it.return();
+            }
+            return !this.readable;
+        });
+    }
+}
+
+//# sourceMappingURL=iterable.js.map
diff --git a/igv_component/node_modules/apache-arrow/io/node/iterable.js.map b/igv_component/node_modules/apache-arrow/io/node/iterable.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..9b746fcde16fb81c5da14555e269d5831d2dd866
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/iterable.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/node/iterable.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;;AAErB,mCAAkC;AAClC,oDAAmE;AASnE,cAAc;AACd,SAAgB,YAAY,CAAI,MAAsC,EAAE,OAAyB;IAC7F,IAAI,IAAA,2BAAe,EAAI,MAAM,CAAC,EAAE;QAAE,OAAO,IAAI,qBAAqB,CAAC,MAAM,CAAC,MAAM,CAAC,aAAa,CAAC,EAA4B,EAAE,OAAO,CAAC,CAAC;KAAE;IACxI,IAAI,IAAA,sBAAU,EAAI,MAAM,CAAC,EAAE;QAAE,OAAO,IAAI,gBAAgB,CAAC,MAAM,CAAC,MAAM,CAAC,QAAQ,CAAC,EAAuB,EAAE,OAAO,CAAC,CAAC;KAAE;IACpH,0BAA0B;IAC1B,MAAM,IAAI,KAAK,CAAC,iEAAiE,CAAC,CAAC;AACvF,CAAC;AALD,oCAKC;AAED,cAAc;AACd,MAAM,gBAA6C,SAAQ,iBAAQ;IAI/D,YAAY,EAAqB,EAAE,OAAyB;QACxD,KAAK,CAAC,OAAO,CAAC,CAAC;QACf,IAAI,CAAC,SAAS,GAAG,EAAE,CAAC;QACpB,IAAI,CAAC,QAAQ,GAAG,KAAK,CAAC;QACtB,IAAI,CAAC,UAAU,GAAG,CAAC,OAAO,IAAI,CAAC,OAAO,CAAC,UAAU,CAAC;IACtD,CAAC;IACD,KAAK,CAAC,IAAY;QACd,MAAM,EAAE,GAAG,IAAI,CAAC,SAAS,CAAC;QAC1B,IAAI,EAAE,IAAI,CAAC,IAAI,CAAC,QAAQ,IAAI,CAAC,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,EAAE;YAChD,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,KAAK,CAAC,IAAI,EAAE,EAAE,CAAC,CAAC;SACxC;IACL,CAAC;IACD,QAAQ,CAAC,CAAe,EAAE,EAA6B;QACnD,MAAM,EAAE,GAAG,IAAI,CAAC,SAAS,CAAC;QAC1B,IAAI,EAAO,CAAC;QACZ,EAAE,IAAI,CAAC,EAAE,GAAG,CAAC,IAAI,IAAI,IAAI,EAAE,CAAC,KAAK,IAAI,EAAE,CAAC,MAAM,CAAC,CAAC;QAChD,EAAE,aAAF,EAAE,uBAAF,EAAE,CAAE,IAAI,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC;QAChB,EAAE,IAAI,EAAE,CAAC,IAAI,CAAC,CAAC;IACnB,CAAC;IACO,KAAK,CAAC,IAAY,EAAE,EAAqB;QAC7C,MAAM,EAAE,GAAG,IAAI,CAAC,UAAU,CAAC;QAC3B,IAAI,CAAC,GAA6B,IAAI,CAAC;QACvC,OAAO,IAAI,CAAC,QAAQ,IAAI,CAAC,CAAC,CAAC,GAAG,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,EAAE;YAC3D,IAAI,IAAI,IAAI,IAAI,EAAE;gBACd,IAAI,IAAI,CAAC,EAAE,IAAI,WAAW,CAAC,MAAM,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC,UAAU,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;aACxE;YACD,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,KAAK,CAAC,IAAI,IAAI,IAAI,CAAC,EAAE;gBAAE,MAAM;aAAE;SACnD;QACD,IAAI,CAAC,CAAA,CAAC,aAAD,CAAC,uBAAD,CAAC,CAAE,IAAI,KAAI,CAAC,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,IAAI,IAAI,CAAC,EAAE;YAC1D,EAAE,CAAC,MAAM,IAAI,EAAE,CAAC,MAAM,EAAE,CAAC;SAC5B;QACD,OAAO,CAAC,IAAI,CAAC,QAAQ,CAAC;IAC1B,CAAC;CACJ;AAED,cAAc;AACd,MAAM,qBAAkD,SAAQ,iBAAQ;IAIpE,YAAY,EAA0B,EAAE,OAAyB;QAC7D,KAAK,CAAC,OAAO,CAAC,CAAC;QACf,IAAI,CAAC,SAAS,GAAG,EAAE,CAAC;QACpB,IAAI,CAAC,QAAQ,GAAG,KAAK,CAAC;QACtB,IAAI,CAAC,UAAU,GAAG,CAAC,OAAO,IAAI,CAAC,OAAO,CAAC,UAAU,CAAC;IACtD,CAAC;IACD,KAAK,CAAC,IAAY;QACd,MAAM,EAAE,GAAG,IAAI,CAAC,SAAS,CAAC;QAC1B,IAAI,EAAE,IAAI,CAAC,IAAI,CAAC,QAAQ,IAAI,CAAC,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,EAAE;YAChD,CAAC,GAAS,EAAE,wDAAC,OAAA,IAAI,CAAC,QAAQ,GAAG,MAAM,IAAI,CAAC,KAAK,CAAC,IAAI,EAAE,EAAE,CAAC,CAAA,GAAA,CAAC,EAAE,CAAC;SAC9D;IACL,CAAC;IACD,QAAQ,CAAC,CAAe,EAAE,EAA6B;QACnD,MAAM,EAAE,GAAG,IAAI,CAAC,SAAS,CAAC;QAC1B,IAAI,EAAO,CAAC;QACZ,EAAE,IAAI,CAAC,EAAE,GAAG,CAAC,IAAI,IAAI,IAAI,EAAE,CAAC,KAAK,IAAI,EAAE,CAAC,MAAM,CAAC,CAAC;QAChD,CAAA,EAAE,aAAF,EAAE,uBAAF,EAAE,CAAE,IAAI,CAAC,EAAE,EAAE,CAAC,EAAE,IAAI,CAAC,GAAG,EAAE,CAAC,EAAE,IAAI,EAAE,CAAC,IAAI,CAAC,CAAC,KAAI,CAAC,EAAE,IAAI,EAAE,CAAC,IAAI,CAAC,CAAC,CAAC;IACnE,CAAC;IACa,KAAK,CAAC,IAAY,EAAE,EAA0B;;YACxD,MAAM,EAAE,GAAG,IAAI,CAAC,UAAU,CAAC;YAC3B,IAAI,CAAC,GAA6B,IAAI,CAAC;YACvC,OAAO,IAAI,CAAC,QAAQ,IAAI,CAAC,CAAC,CAAC,GAAG,MAAM,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,EAAE;gBACjE,IAAI,IAAI,IAAI,IAAI,EAAE;oBACd,IAAI,IAAI,CAAC,EAAE,IAAI,WAAW,CAAC,MAAM,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC,UAAU,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;iBACxE;gBACD,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,KAAK,CAAC,IAAI,IAAI,IAAI,CAAC,EAAE;oBAAE,MAAM;iBAAE;aACnD;YACD,IAAI,CAAC,CAAA,CAAC,aAAD,CAAC,uBAAD,CAAC,CAAE,IAAI,KAAI,CAAC,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,IAAI,IAAI,CAAC,EAAE;gBAC1D,EAAE,CAAC,MAAM,IAAI,EAAE,CAAC,MAAM,EAAE,CAAC;aAC5B;YACD,OAAO,CAAC,IAAI,CAAC,QAAQ,CAAC;QAC1B,CAAC;KAAA;CACJ","file":"iterable.js","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/node/iterable.mjs b/igv_component/node_modules/apache-arrow/io/node/iterable.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..44cf2c98d6303f5da4200e4a6b9b32742c8535a8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/iterable.mjs
@@ -0,0 +1,109 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { __awaiter } from "tslib";
+import { Readable } from 'stream';
+import { isIterable, isAsyncIterable } from '../../util/compat.mjs';
+/** @ignore */
+export function toNodeStream(source, options) {
+    if (isAsyncIterable(source)) {
+        return new AsyncIterableReadable(source[Symbol.asyncIterator](), options);
+    }
+    if (isIterable(source)) {
+        return new IterableReadable(source[Symbol.iterator](), options);
+    }
+    /* istanbul ignore next */
+    throw new Error(`toNodeStream() must be called with an Iterable or AsyncIterable`);
+}
+/** @ignore */
+class IterableReadable extends Readable {
+    constructor(it, options) {
+        super(options);
+        this._iterator = it;
+        this._pulling = false;
+        this._bytesMode = !options || !options.objectMode;
+    }
+    _read(size) {
+        const it = this._iterator;
+        if (it && !this._pulling && (this._pulling = true)) {
+            this._pulling = this._pull(size, it);
+        }
+    }
+    _destroy(e, cb) {
+        const it = this._iterator;
+        let fn;
+        it && (fn = e != null && it.throw || it.return);
+        fn === null || fn === void 0 ? void 0 : fn.call(it, e);
+        cb && cb(null);
+    }
+    _pull(size, it) {
+        const bm = this._bytesMode;
+        let r = null;
+        while (this.readable && !(r = it.next(bm ? size : null)).done) {
+            if (size != null) {
+                size -= (bm && ArrayBuffer.isView(r.value) ? r.value.byteLength : 1);
+            }
+            if (!this.push(r.value) || size <= 0) {
+                break;
+            }
+        }
+        if (((r === null || r === void 0 ? void 0 : r.done) || !this.readable) && (this.push(null) || true)) {
+            it.return && it.return();
+        }
+        return !this.readable;
+    }
+}
+/** @ignore */
+class AsyncIterableReadable extends Readable {
+    constructor(it, options) {
+        super(options);
+        this._iterator = it;
+        this._pulling = false;
+        this._bytesMode = !options || !options.objectMode;
+    }
+    _read(size) {
+        const it = this._iterator;
+        if (it && !this._pulling && (this._pulling = true)) {
+            (() => __awaiter(this, void 0, void 0, function* () { return this._pulling = yield this._pull(size, it); }))();
+        }
+    }
+    _destroy(e, cb) {
+        const it = this._iterator;
+        let fn;
+        it && (fn = e != null && it.throw || it.return);
+        (fn === null || fn === void 0 ? void 0 : fn.call(it, e).then(() => cb && cb(null))) || (cb && cb(null));
+    }
+    _pull(size, it) {
+        return __awaiter(this, void 0, void 0, function* () {
+            const bm = this._bytesMode;
+            let r = null;
+            while (this.readable && !(r = yield it.next(bm ? size : null)).done) {
+                if (size != null) {
+                    size -= (bm && ArrayBuffer.isView(r.value) ? r.value.byteLength : 1);
+                }
+                if (!this.push(r.value) || size <= 0) {
+                    break;
+                }
+            }
+            if (((r === null || r === void 0 ? void 0 : r.done) || !this.readable) && (this.push(null) || true)) {
+                it.return && it.return();
+            }
+            return !this.readable;
+        });
+    }
+}
+
+//# sourceMappingURL=iterable.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/io/node/iterable.mjs.map b/igv_component/node_modules/apache-arrow/io/node/iterable.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..bb8c11cdf51679c94ea5216b331440bbb9536f38
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/iterable.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/node/iterable.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;AAErB,OAAO,EAAE,QAAQ,EAAE,MAAM,QAAQ,CAAC;AAClC,OAAO,EAAE,UAAU,EAAE,eAAe,EAAE,MAAM,sBAAsB,CAAC;AASnE,cAAc;AACd,MAAM,UAAU,YAAY,CAAI,MAAsC,EAAE,OAAyB;IAC7F,IAAI,eAAe,CAAI,MAAM,CAAC,EAAE;QAAE,OAAO,IAAI,qBAAqB,CAAC,MAAM,CAAC,MAAM,CAAC,aAAa,CAAC,EAA4B,EAAE,OAAO,CAAC,CAAC;KAAE;IACxI,IAAI,UAAU,CAAI,MAAM,CAAC,EAAE;QAAE,OAAO,IAAI,gBAAgB,CAAC,MAAM,CAAC,MAAM,CAAC,QAAQ,CAAC,EAAuB,EAAE,OAAO,CAAC,CAAC;KAAE;IACpH,0BAA0B;IAC1B,MAAM,IAAI,KAAK,CAAC,iEAAiE,CAAC,CAAC;AACvF,CAAC;AAED,cAAc;AACd,MAAM,gBAA6C,SAAQ,QAAQ;IAI/D,YAAY,EAAqB,EAAE,OAAyB;QACxD,KAAK,CAAC,OAAO,CAAC,CAAC;QACf,IAAI,CAAC,SAAS,GAAG,EAAE,CAAC;QACpB,IAAI,CAAC,QAAQ,GAAG,KAAK,CAAC;QACtB,IAAI,CAAC,UAAU,GAAG,CAAC,OAAO,IAAI,CAAC,OAAO,CAAC,UAAU,CAAC;IACtD,CAAC;IACD,KAAK,CAAC,IAAY;QACd,MAAM,EAAE,GAAG,IAAI,CAAC,SAAS,CAAC;QAC1B,IAAI,EAAE,IAAI,CAAC,IAAI,CAAC,QAAQ,IAAI,CAAC,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,EAAE;YAChD,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,KAAK,CAAC,IAAI,EAAE,EAAE,CAAC,CAAC;SACxC;IACL,CAAC;IACD,QAAQ,CAAC,CAAe,EAAE,EAA6B;QACnD,MAAM,EAAE,GAAG,IAAI,CAAC,SAAS,CAAC;QAC1B,IAAI,EAAO,CAAC;QACZ,EAAE,IAAI,CAAC,EAAE,GAAG,CAAC,IAAI,IAAI,IAAI,EAAE,CAAC,KAAK,IAAI,EAAE,CAAC,MAAM,CAAC,CAAC;QAChD,EAAE,aAAF,EAAE,uBAAF,EAAE,CAAE,IAAI,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC;QAChB,EAAE,IAAI,EAAE,CAAC,IAAI,CAAC,CAAC;IACnB,CAAC;IACO,KAAK,CAAC,IAAY,EAAE,EAAqB;QAC7C,MAAM,EAAE,GAAG,IAAI,CAAC,UAAU,CAAC;QAC3B,IAAI,CAAC,GAA6B,IAAI,CAAC;QACvC,OAAO,IAAI,CAAC,QAAQ,IAAI,CAAC,CAAC,CAAC,GAAG,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,EAAE;YAC3D,IAAI,IAAI,IAAI,IAAI,EAAE;gBACd,IAAI,IAAI,CAAC,EAAE,IAAI,WAAW,CAAC,MAAM,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC,UAAU,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;aACxE;YACD,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,KAAK,CAAC,IAAI,IAAI,IAAI,CAAC,EAAE;gBAAE,MAAM;aAAE;SACnD;QACD,IAAI,CAAC,CAAA,CAAC,aAAD,CAAC,uBAAD,CAAC,CAAE,IAAI,KAAI,CAAC,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,IAAI,IAAI,CAAC,EAAE;YAC1D,EAAE,CAAC,MAAM,IAAI,EAAE,CAAC,MAAM,EAAE,CAAC;SAC5B;QACD,OAAO,CAAC,IAAI,CAAC,QAAQ,CAAC;IAC1B,CAAC;CACJ;AAED,cAAc;AACd,MAAM,qBAAkD,SAAQ,QAAQ;IAIpE,YAAY,EAA0B,EAAE,OAAyB;QAC7D,KAAK,CAAC,OAAO,CAAC,CAAC;QACf,IAAI,CAAC,SAAS,GAAG,EAAE,CAAC;QACpB,IAAI,CAAC,QAAQ,GAAG,KAAK,CAAC;QACtB,IAAI,CAAC,UAAU,GAAG,CAAC,OAAO,IAAI,CAAC,OAAO,CAAC,UAAU,CAAC;IACtD,CAAC;IACD,KAAK,CAAC,IAAY;QACd,MAAM,EAAE,GAAG,IAAI,CAAC,SAAS,CAAC;QAC1B,IAAI,EAAE,IAAI,CAAC,IAAI,CAAC,QAAQ,IAAI,CAAC,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,EAAE;YAChD,CAAC,GAAS,EAAE,gDAAC,OAAA,IAAI,CAAC,QAAQ,GAAG,MAAM,IAAI,CAAC,KAAK,CAAC,IAAI,EAAE,EAAE,CAAC,CAAA,GAAA,CAAC,EAAE,CAAC;SAC9D;IACL,CAAC;IACD,QAAQ,CAAC,CAAe,EAAE,EAA6B;QACnD,MAAM,EAAE,GAAG,IAAI,CAAC,SAAS,CAAC;QAC1B,IAAI,EAAO,CAAC;QACZ,EAAE,IAAI,CAAC,EAAE,GAAG,CAAC,IAAI,IAAI,IAAI,EAAE,CAAC,KAAK,IAAI,EAAE,CAAC,MAAM,CAAC,CAAC;QAChD,CAAA,EAAE,aAAF,EAAE,uBAAF,EAAE,CAAE,IAAI,CAAC,EAAE,EAAE,CAAC,EAAE,IAAI,CAAC,GAAG,EAAE,CAAC,EAAE,IAAI,EAAE,CAAC,IAAI,CAAC,CAAC,KAAI,CAAC,EAAE,IAAI,EAAE,CAAC,IAAI,CAAC,CAAC,CAAC;IACnE,CAAC;IACa,KAAK,CAAC,IAAY,EAAE,EAA0B;;YACxD,MAAM,EAAE,GAAG,IAAI,CAAC,UAAU,CAAC;YAC3B,IAAI,CAAC,GAA6B,IAAI,CAAC;YACvC,OAAO,IAAI,CAAC,QAAQ,IAAI,CAAC,CAAC,CAAC,GAAG,MAAM,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,EAAE;gBACjE,IAAI,IAAI,IAAI,IAAI,EAAE;oBACd,IAAI,IAAI,CAAC,EAAE,IAAI,WAAW,CAAC,MAAM,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC,UAAU,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;iBACxE;gBACD,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,KAAK,CAAC,IAAI,IAAI,IAAI,CAAC,EAAE;oBAAE,MAAM;iBAAE;aACnD;YACD,IAAI,CAAC,CAAA,CAAC,aAAD,CAAC,uBAAD,CAAC,CAAE,IAAI,KAAI,CAAC,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,IAAI,IAAI,CAAC,EAAE;gBAC1D,EAAE,CAAC,MAAM,IAAI,EAAE,CAAC,MAAM,EAAE,CAAC;aAC5B;YACD,OAAO,CAAC,IAAI,CAAC,QAAQ,CAAC;QAC1B,CAAC;KAAA;CACJ","file":"iterable.js","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/node/reader.d.ts b/igv_component/node_modules/apache-arrow/io/node/reader.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..74c002d6ee6dfa7c68b143fd7cb533265ddca29b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/reader.d.ts
@@ -0,0 +1,28 @@
+/// <reference types="node" />
+import { Duplex, DuplexOptions } from 'stream';
+import { AsyncByteQueue } from '../../io/stream.js';
+import { RecordBatchReader } from '../../ipc/reader.js';
+import { TypeMap } from '../../type.js';
+/** @ignore */
+export declare function recordBatchReaderThroughNodeStream<T extends TypeMap = any>(options?: DuplexOptions & {
+    autoDestroy: boolean;
+}): RecordBatchReaderDuplex<T>;
+/** @ignore */
+declare type CB = (error?: Error | null | undefined) => void;
+/** @ignore */
+declare class RecordBatchReaderDuplex<T extends TypeMap = any> extends Duplex {
+    private _pulling;
+    private _autoDestroy;
+    private _reader;
+    private _asyncQueue;
+    constructor(options?: DuplexOptions & {
+        autoDestroy: boolean;
+    });
+    _final(cb?: CB): void;
+    _write(x: any, _: string, cb: CB): boolean;
+    _read(size: number): void;
+    _destroy(err: Error | null, cb: (error: Error | null) => void): void;
+    _open(source: AsyncByteQueue): Promise<import("../../ipc/reader.js").AsyncRecordBatchStreamReader<T>>;
+    _pull(size: number, reader: RecordBatchReader<T>): Promise<boolean>;
+}
+export {};
diff --git a/igv_component/node_modules/apache-arrow/io/node/reader.d.ts.map b/igv_component/node_modules/apache-arrow/io/node/reader.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..97ea1262864b2b7a7c08874bdb35235c9a5bf751
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/reader.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/node/reader.ts"],"names":[],"mappings":";AAiBA,OAAO,EAAE,MAAM,EAAE,aAAa,EAAE,MAAM,QAAQ,CAAC;AAC/C,OAAO,EAAE,cAAc,EAAE,MAAM,oBAAoB,CAAC;AACpD,OAAO,EAAE,iBAAiB,EAAE,MAAM,qBAAqB,CAAC;AAExD,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AAExC,cAAc;AACd,wBAAgB,kCAAkC,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,EAAE,OAAO,CAAC,EAAE,aAAa,GAAG;IAAE,WAAW,EAAE,OAAO,CAAA;CAAE,8BAE7H;AAED,cAAc;AACd,aAAK,EAAE,GAAG,CAAC,KAAK,CAAC,EAAE,KAAK,GAAG,IAAI,GAAG,SAAS,KAAK,IAAI,CAAC;AAErD,cAAc;AACd,cAAM,uBAAuB,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,CAAE,SAAQ,MAAM;IACjE,OAAO,CAAC,QAAQ,CAAS;IACzB,OAAO,CAAC,YAAY,CAAQ;IAC5B,OAAO,CAAC,OAAO,CAA2B;IAC1C,OAAO,CAAC,WAAW,CAAwB;gBAC/B,OAAO,CAAC,EAAE,aAAa,GAAG;QAAE,WAAW,EAAE,OAAO,CAAA;KAAE;IAO9D,MAAM,CAAC,EAAE,CAAC,EAAE,EAAE;IAKd,MAAM,CAAC,CAAC,EAAE,GAAG,EAAE,CAAC,EAAE,MAAM,EAAE,EAAE,EAAE,EAAE;IAMhC,KAAK,CAAC,IAAI,EAAE,MAAM;IAWlB,QAAQ,CAAC,GAAG,EAAE,KAAK,GAAG,IAAI,EAAE,EAAE,EAAE,CAAC,KAAK,EAAE,KAAK,GAAG,IAAI,KAAK,IAAI;IAKvD,KAAK,CAAC,MAAM,EAAE,cAAc;IAG5B,KAAK,CAAC,IAAI,EAAE,MAAM,EAAE,MAAM,EAAE,iBAAiB,CAAC,CAAC,CAAC;CAWzD","file":"reader.d.ts","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/node/reader.js b/igv_component/node_modules/apache-arrow/io/node/reader.js
new file mode 100644
index 0000000000000000000000000000000000000000..51ebc4603a81106f07cb46a0e312c0877f1c3b77
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/reader.js
@@ -0,0 +1,91 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.recordBatchReaderThroughNodeStream = void 0;
+const tslib_1 = require("tslib");
+const stream_1 = require("stream");
+const stream_js_1 = require("../../io/stream.js");
+const reader_js_1 = require("../../ipc/reader.js");
+/** @ignore */
+function recordBatchReaderThroughNodeStream(options) {
+    return new RecordBatchReaderDuplex(options);
+}
+exports.recordBatchReaderThroughNodeStream = recordBatchReaderThroughNodeStream;
+/** @ignore */
+class RecordBatchReaderDuplex extends stream_1.Duplex {
+    constructor(options) {
+        super(Object.assign(Object.assign({ allowHalfOpen: false }, options), { readableObjectMode: true, writableObjectMode: false }));
+        this._pulling = false;
+        this._autoDestroy = true;
+        this._reader = null;
+        this._pulling = false;
+        this._asyncQueue = new stream_js_1.AsyncByteQueue();
+        this._autoDestroy = options && (typeof options.autoDestroy === 'boolean') ? options.autoDestroy : true;
+    }
+    _final(cb) {
+        const aq = this._asyncQueue;
+        aq === null || aq === void 0 ? void 0 : aq.close();
+        cb && cb();
+    }
+    _write(x, _, cb) {
+        const aq = this._asyncQueue;
+        aq === null || aq === void 0 ? void 0 : aq.write(x);
+        cb && cb();
+        return true;
+    }
+    _read(size) {
+        const aq = this._asyncQueue;
+        if (aq && !this._pulling && (this._pulling = true)) {
+            (() => tslib_1.__awaiter(this, void 0, void 0, function* () {
+                if (!this._reader) {
+                    this._reader = yield this._open(aq);
+                }
+                this._pulling = yield this._pull(size, this._reader);
+            }))();
+        }
+    }
+    _destroy(err, cb) {
+        const aq = this._asyncQueue;
+        if (aq) {
+            err ? aq.abort(err) : aq.close();
+        }
+        cb(this._asyncQueue = this._reader = null);
+    }
+    _open(source) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            return yield (yield reader_js_1.RecordBatchReader.from(source)).open({ autoDestroy: this._autoDestroy });
+        });
+    }
+    _pull(size, reader) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            let r = null;
+            while (this.readable && !(r = yield reader.next()).done) {
+                if (!this.push(r.value) || (size != null && --size <= 0)) {
+                    break;
+                }
+            }
+            if (!this.readable || ((r === null || r === void 0 ? void 0 : r.done) && (reader.autoDestroy || (yield reader.reset().open()).closed))) {
+                this.push(null);
+                yield reader.cancel();
+            }
+            return !this.readable;
+        });
+    }
+}
+
+//# sourceMappingURL=reader.js.map
diff --git a/igv_component/node_modules/apache-arrow/io/node/reader.js.map b/igv_component/node_modules/apache-arrow/io/node/reader.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..1ac409d0bcd417b85879793c49c9e662965e3960
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/reader.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/node/reader.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;;AAErB,mCAA+C;AAC/C,kDAAoD;AACpD,mDAAwD;AAIxD,cAAc;AACd,SAAgB,kCAAkC,CAA0B,OAAkD;IAC1H,OAAO,IAAI,uBAAuB,CAAI,OAAO,CAAC,CAAC;AACnD,CAAC;AAFD,gFAEC;AAKD,cAAc;AACd,MAAM,uBAAiD,SAAQ,eAAM;IAKjE,YAAY,OAAkD;QAC1D,KAAK,+BAAG,aAAa,EAAE,KAAK,IAAK,OAAO,KAAE,kBAAkB,EAAE,IAAI,EAAE,kBAAkB,EAAE,KAAK,IAAG,CAAC;QAL7F,aAAQ,GAAG,KAAK,CAAC;QACjB,iBAAY,GAAG,IAAI,CAAC;QAKxB,IAAI,CAAC,OAAO,GAAG,IAAI,CAAC;QACpB,IAAI,CAAC,QAAQ,GAAG,KAAK,CAAC;QACtB,IAAI,CAAC,WAAW,GAAG,IAAI,0BAAc,EAAE,CAAC;QACxC,IAAI,CAAC,YAAY,GAAG,OAAO,IAAI,CAAC,OAAO,OAAO,CAAC,WAAW,KAAK,SAAS,CAAC,CAAC,CAAC,CAAC,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,IAAI,CAAC;IAC3G,CAAC;IACD,MAAM,CAAC,EAAO;QACV,MAAM,EAAE,GAAG,IAAI,CAAC,WAAW,CAAC;QAC5B,EAAE,aAAF,EAAE,uBAAF,EAAE,CAAE,KAAK,EAAE,CAAC;QACZ,EAAE,IAAI,EAAE,EAAE,CAAC;IACf,CAAC;IACD,MAAM,CAAC,CAAM,EAAE,CAAS,EAAE,EAAM;QAC5B,MAAM,EAAE,GAAG,IAAI,CAAC,WAAW,CAAC;QAC5B,EAAE,aAAF,EAAE,uBAAF,EAAE,CAAE,KAAK,CAAC,CAAC,CAAC,CAAC;QACb,EAAE,IAAI,EAAE,EAAE,CAAC;QACX,OAAO,IAAI,CAAC;IAChB,CAAC;IACD,KAAK,CAAC,IAAY;QACd,MAAM,EAAE,GAAG,IAAI,CAAC,WAAW,CAAC;QAC5B,IAAI,EAAE,IAAI,CAAC,IAAI,CAAC,QAAQ,IAAI,CAAC,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,EAAE;YAChD,CAAC,GAAS,EAAE;gBACR,IAAI,CAAC,IAAI,CAAC,OAAO,EAAE;oBACf,IAAI,CAAC,OAAO,GAAG,MAAM,IAAI,CAAC,KAAK,CAAC,EAAE,CAAC,CAAC;iBACvC;gBACD,IAAI,CAAC,QAAQ,GAAG,MAAM,IAAI,CAAC,KAAK,CAAC,IAAI,EAAE,IAAI,CAAC,OAAO,CAAC,CAAC;YACzD,CAAC,CAAA,CAAC,EAAE,CAAC;SACR;IACL,CAAC;IACD,QAAQ,CAAC,GAAiB,EAAE,EAAiC;QACzD,MAAM,EAAE,GAAG,IAAI,CAAC,WAAW,CAAC;QAC5B,IAAI,EAAE,EAAE;YAAE,GAAG,CAAC,CAAC,CAAC,EAAE,CAAC,KAAK,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,EAAE,CAAC,KAAK,EAAE,CAAC;SAAE;QAC7C,EAAE,CAAC,IAAI,CAAC,WAAW,GAAG,IAAI,CAAC,OAAO,GAAG,IAAI,CAAC,CAAC;IAC/C,CAAC;IACK,KAAK,CAAC,MAAsB;;YAC9B,OAAO,MAAM,CAAC,MAAM,6BAAiB,CAAC,IAAI,CAAI,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAE,WAAW,EAAE,IAAI,CAAC,YAAY,EAAE,CAAC,CAAC;QACpG,CAAC;KAAA;IACK,KAAK,CAAC,IAAY,EAAE,MAA4B;;YAClD,IAAI,CAAC,GAA0C,IAAI,CAAC;YACpD,OAAO,IAAI,CAAC,QAAQ,IAAI,CAAC,CAAC,CAAC,GAAG,MAAM,MAAM,CAAC,IAAI,EAAE,CAAC,CAAC,IAAI,EAAE;gBACrD,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,KAAK,CAAC,IAAI,CAAC,IAAI,IAAI,IAAI,IAAI,EAAE,IAAI,IAAI,CAAC,CAAC,EAAE;oBAAE,MAAM;iBAAE;aACvE;YACD,IAAI,CAAC,IAAI,CAAC,QAAQ,IAAI,CAAC,CAAA,CAAC,aAAD,CAAC,uBAAD,CAAC,CAAE,IAAI,KAAI,CAAC,MAAM,CAAC,WAAW,IAAI,CAAC,MAAM,MAAM,CAAC,KAAK,EAAE,CAAC,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,CAAC,EAAE;gBAC7F,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;gBAChB,MAAM,MAAM,CAAC,MAAM,EAAE,CAAC;aACzB;YACD,OAAO,CAAC,IAAI,CAAC,QAAQ,CAAC;QAC1B,CAAC;KAAA;CACJ","file":"reader.js","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/node/reader.mjs b/igv_component/node_modules/apache-arrow/io/node/reader.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..3a2b97edc305d3a3a76677ab5d8b8fbbe5836747
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/reader.mjs
@@ -0,0 +1,87 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { __awaiter } from "tslib";
+import { Duplex } from 'stream';
+import { AsyncByteQueue } from '../../io/stream.mjs';
+import { RecordBatchReader } from '../../ipc/reader.mjs';
+/** @ignore */
+export function recordBatchReaderThroughNodeStream(options) {
+    return new RecordBatchReaderDuplex(options);
+}
+/** @ignore */
+class RecordBatchReaderDuplex extends Duplex {
+    constructor(options) {
+        super(Object.assign(Object.assign({ allowHalfOpen: false }, options), { readableObjectMode: true, writableObjectMode: false }));
+        this._pulling = false;
+        this._autoDestroy = true;
+        this._reader = null;
+        this._pulling = false;
+        this._asyncQueue = new AsyncByteQueue();
+        this._autoDestroy = options && (typeof options.autoDestroy === 'boolean') ? options.autoDestroy : true;
+    }
+    _final(cb) {
+        const aq = this._asyncQueue;
+        aq === null || aq === void 0 ? void 0 : aq.close();
+        cb && cb();
+    }
+    _write(x, _, cb) {
+        const aq = this._asyncQueue;
+        aq === null || aq === void 0 ? void 0 : aq.write(x);
+        cb && cb();
+        return true;
+    }
+    _read(size) {
+        const aq = this._asyncQueue;
+        if (aq && !this._pulling && (this._pulling = true)) {
+            (() => __awaiter(this, void 0, void 0, function* () {
+                if (!this._reader) {
+                    this._reader = yield this._open(aq);
+                }
+                this._pulling = yield this._pull(size, this._reader);
+            }))();
+        }
+    }
+    _destroy(err, cb) {
+        const aq = this._asyncQueue;
+        if (aq) {
+            err ? aq.abort(err) : aq.close();
+        }
+        cb(this._asyncQueue = this._reader = null);
+    }
+    _open(source) {
+        return __awaiter(this, void 0, void 0, function* () {
+            return yield (yield RecordBatchReader.from(source)).open({ autoDestroy: this._autoDestroy });
+        });
+    }
+    _pull(size, reader) {
+        return __awaiter(this, void 0, void 0, function* () {
+            let r = null;
+            while (this.readable && !(r = yield reader.next()).done) {
+                if (!this.push(r.value) || (size != null && --size <= 0)) {
+                    break;
+                }
+            }
+            if (!this.readable || ((r === null || r === void 0 ? void 0 : r.done) && (reader.autoDestroy || (yield reader.reset().open()).closed))) {
+                this.push(null);
+                yield reader.cancel();
+            }
+            return !this.readable;
+        });
+    }
+}
+
+//# sourceMappingURL=reader.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/io/node/reader.mjs.map b/igv_component/node_modules/apache-arrow/io/node/reader.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..19492107ae5ec02d8c310063586ff16890ffb0b8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/reader.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/node/reader.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;AAErB,OAAO,EAAE,MAAM,EAAiB,MAAM,QAAQ,CAAC;AAC/C,OAAO,EAAE,cAAc,EAAE,MAAM,oBAAoB,CAAC;AACpD,OAAO,EAAE,iBAAiB,EAAE,MAAM,qBAAqB,CAAC;AAIxD,cAAc;AACd,MAAM,UAAU,kCAAkC,CAA0B,OAAkD;IAC1H,OAAO,IAAI,uBAAuB,CAAI,OAAO,CAAC,CAAC;AACnD,CAAC;AAKD,cAAc;AACd,MAAM,uBAAiD,SAAQ,MAAM;IAKjE,YAAY,OAAkD;QAC1D,KAAK,+BAAG,aAAa,EAAE,KAAK,IAAK,OAAO,KAAE,kBAAkB,EAAE,IAAI,EAAE,kBAAkB,EAAE,KAAK,IAAG,CAAC;QAL7F,aAAQ,GAAG,KAAK,CAAC;QACjB,iBAAY,GAAG,IAAI,CAAC;QAKxB,IAAI,CAAC,OAAO,GAAG,IAAI,CAAC;QACpB,IAAI,CAAC,QAAQ,GAAG,KAAK,CAAC;QACtB,IAAI,CAAC,WAAW,GAAG,IAAI,cAAc,EAAE,CAAC;QACxC,IAAI,CAAC,YAAY,GAAG,OAAO,IAAI,CAAC,OAAO,OAAO,CAAC,WAAW,KAAK,SAAS,CAAC,CAAC,CAAC,CAAC,OAAO,CAAC,WAAW,CAAC,CAAC,CAAC,IAAI,CAAC;IAC3G,CAAC;IACD,MAAM,CAAC,EAAO;QACV,MAAM,EAAE,GAAG,IAAI,CAAC,WAAW,CAAC;QAC5B,EAAE,aAAF,EAAE,uBAAF,EAAE,CAAE,KAAK,EAAE,CAAC;QACZ,EAAE,IAAI,EAAE,EAAE,CAAC;IACf,CAAC;IACD,MAAM,CAAC,CAAM,EAAE,CAAS,EAAE,EAAM;QAC5B,MAAM,EAAE,GAAG,IAAI,CAAC,WAAW,CAAC;QAC5B,EAAE,aAAF,EAAE,uBAAF,EAAE,CAAE,KAAK,CAAC,CAAC,CAAC,CAAC;QACb,EAAE,IAAI,EAAE,EAAE,CAAC;QACX,OAAO,IAAI,CAAC;IAChB,CAAC;IACD,KAAK,CAAC,IAAY;QACd,MAAM,EAAE,GAAG,IAAI,CAAC,WAAW,CAAC;QAC5B,IAAI,EAAE,IAAI,CAAC,IAAI,CAAC,QAAQ,IAAI,CAAC,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,EAAE;YAChD,CAAC,GAAS,EAAE;gBACR,IAAI,CAAC,IAAI,CAAC,OAAO,EAAE;oBACf,IAAI,CAAC,OAAO,GAAG,MAAM,IAAI,CAAC,KAAK,CAAC,EAAE,CAAC,CAAC;iBACvC;gBACD,IAAI,CAAC,QAAQ,GAAG,MAAM,IAAI,CAAC,KAAK,CAAC,IAAI,EAAE,IAAI,CAAC,OAAO,CAAC,CAAC;YACzD,CAAC,CAAA,CAAC,EAAE,CAAC;SACR;IACL,CAAC;IACD,QAAQ,CAAC,GAAiB,EAAE,EAAiC;QACzD,MAAM,EAAE,GAAG,IAAI,CAAC,WAAW,CAAC;QAC5B,IAAI,EAAE,EAAE;YAAE,GAAG,CAAC,CAAC,CAAC,EAAE,CAAC,KAAK,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,EAAE,CAAC,KAAK,EAAE,CAAC;SAAE;QAC7C,EAAE,CAAC,IAAI,CAAC,WAAW,GAAG,IAAI,CAAC,OAAO,GAAG,IAAI,CAAC,CAAC;IAC/C,CAAC;IACK,KAAK,CAAC,MAAsB;;YAC9B,OAAO,MAAM,CAAC,MAAM,iBAAiB,CAAC,IAAI,CAAI,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,EAAE,WAAW,EAAE,IAAI,CAAC,YAAY,EAAE,CAAC,CAAC;QACpG,CAAC;KAAA;IACK,KAAK,CAAC,IAAY,EAAE,MAA4B;;YAClD,IAAI,CAAC,GAA0C,IAAI,CAAC;YACpD,OAAO,IAAI,CAAC,QAAQ,IAAI,CAAC,CAAC,CAAC,GAAG,MAAM,MAAM,CAAC,IAAI,EAAE,CAAC,CAAC,IAAI,EAAE;gBACrD,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,KAAK,CAAC,IAAI,CAAC,IAAI,IAAI,IAAI,IAAI,EAAE,IAAI,IAAI,CAAC,CAAC,EAAE;oBAAE,MAAM;iBAAE;aACvE;YACD,IAAI,CAAC,IAAI,CAAC,QAAQ,IAAI,CAAC,CAAA,CAAC,aAAD,CAAC,uBAAD,CAAC,CAAE,IAAI,KAAI,CAAC,MAAM,CAAC,WAAW,IAAI,CAAC,MAAM,MAAM,CAAC,KAAK,EAAE,CAAC,IAAI,EAAE,CAAC,CAAC,MAAM,CAAC,CAAC,EAAE;gBAC7F,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;gBAChB,MAAM,MAAM,CAAC,MAAM,EAAE,CAAC;aACzB;YACD,OAAO,CAAC,IAAI,CAAC,QAAQ,CAAC;QAC1B,CAAC;KAAA;CACJ","file":"reader.js","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/node/writer.d.ts b/igv_component/node_modules/apache-arrow/io/node/writer.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..1df3e4fd21385b2c40ed609b21f3280f2eb9d1e9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/writer.d.ts
@@ -0,0 +1,24 @@
+/// <reference types="node" />
+import { Duplex, DuplexOptions } from 'stream';
+import { AsyncByteStream } from '../../io/stream.js';
+import { RecordBatchWriter } from '../../ipc/writer.js';
+import { TypeMap } from '../../type.js';
+/** @ignore */
+export declare function recordBatchWriterThroughNodeStream<T extends TypeMap = any>(this: typeof RecordBatchWriter, options?: DuplexOptions & {
+    autoDestroy: boolean;
+}): RecordBatchWriterDuplex<T>;
+/** @ignore */
+declare type CB = (error?: Error | null | undefined) => void;
+/** @ignore */
+declare class RecordBatchWriterDuplex<T extends TypeMap = any> extends Duplex {
+    private _pulling;
+    private _reader;
+    private _writer;
+    constructor(writer: RecordBatchWriter<T>, options?: DuplexOptions);
+    _final(cb?: CB): void;
+    _write(x: any, _: string, cb: CB): boolean;
+    _read(size: number): void;
+    _destroy(err: Error | null, cb: (error: Error | null) => void): void;
+    _pull(size: number, reader: AsyncByteStream): Promise<boolean>;
+}
+export {};
diff --git a/igv_component/node_modules/apache-arrow/io/node/writer.d.ts.map b/igv_component/node_modules/apache-arrow/io/node/writer.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..620dc73389e1044e533dad01d801f1a0940fcdbf
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/writer.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/node/writer.ts"],"names":[],"mappings":";AAiBA,OAAO,EAAE,MAAM,EAAE,aAAa,EAAE,MAAM,QAAQ,CAAC;AAC/C,OAAO,EAAE,eAAe,EAAE,MAAM,oBAAoB,CAAC;AACrD,OAAO,EAAE,iBAAiB,EAAE,MAAM,qBAAqB,CAAC;AACxD,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AAExC,cAAc;AACd,wBAAgB,kCAAkC,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,EAAE,IAAI,EAAE,OAAO,iBAAiB,EAAE,OAAO,CAAC,EAAE,aAAa,GAAG;IAAE,WAAW,EAAE,OAAO,CAAA;CAAE,8BAE7J;AAED,cAAc;AACd,aAAK,EAAE,GAAG,CAAC,KAAK,CAAC,EAAE,KAAK,GAAG,IAAI,GAAG,SAAS,KAAK,IAAI,CAAC;AAErD,cAAc;AACd,cAAM,uBAAuB,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,CAAE,SAAQ,MAAM;IACjE,OAAO,CAAC,QAAQ,CAAS;IACzB,OAAO,CAAC,OAAO,CAAyB;IACxC,OAAO,CAAC,OAAO,CAA2B;gBAC9B,MAAM,EAAE,iBAAiB,CAAC,CAAC,CAAC,EAAE,OAAO,CAAC,EAAE,aAAa;IAKjE,MAAM,CAAC,EAAE,CAAC,EAAE,EAAE;IAKd,MAAM,CAAC,CAAC,EAAE,GAAG,EAAE,CAAC,EAAE,MAAM,EAAE,EAAE,EAAE,EAAE;IAMhC,KAAK,CAAC,IAAI,EAAE,MAAM;IAMlB,QAAQ,CAAC,GAAG,EAAE,KAAK,GAAG,IAAI,EAAE,EAAE,EAAE,CAAC,KAAK,EAAE,KAAK,GAAG,IAAI,KAAK,IAAI;IAKvD,KAAK,CAAC,IAAI,EAAE,MAAM,EAAE,MAAM,EAAE,eAAe;CAcpD","file":"writer.d.ts","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/node/writer.js b/igv_component/node_modules/apache-arrow/io/node/writer.js
new file mode 100644
index 0000000000000000000000000000000000000000..e13136d26295ee4b0ae9cd5a3b94877c4592d8fa
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/writer.js
@@ -0,0 +1,80 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.recordBatchWriterThroughNodeStream = void 0;
+const tslib_1 = require("tslib");
+const stream_1 = require("stream");
+const stream_js_1 = require("../../io/stream.js");
+/** @ignore */
+function recordBatchWriterThroughNodeStream(options) {
+    return new RecordBatchWriterDuplex(new this(options));
+}
+exports.recordBatchWriterThroughNodeStream = recordBatchWriterThroughNodeStream;
+/** @ignore */
+class RecordBatchWriterDuplex extends stream_1.Duplex {
+    constructor(writer, options) {
+        super(Object.assign(Object.assign({ allowHalfOpen: false }, options), { writableObjectMode: true, readableObjectMode: false }));
+        this._pulling = false;
+        this._writer = writer;
+        this._reader = new stream_js_1.AsyncByteStream(writer);
+    }
+    _final(cb) {
+        const writer = this._writer;
+        writer === null || writer === void 0 ? void 0 : writer.close();
+        cb && cb();
+    }
+    _write(x, _, cb) {
+        const writer = this._writer;
+        writer === null || writer === void 0 ? void 0 : writer.write(x);
+        cb && cb();
+        return true;
+    }
+    _read(size) {
+        const it = this._reader;
+        if (it && !this._pulling && (this._pulling = true)) {
+            (() => tslib_1.__awaiter(this, void 0, void 0, function* () { return this._pulling = yield this._pull(size, it); }))();
+        }
+    }
+    _destroy(err, cb) {
+        const writer = this._writer;
+        if (writer) {
+            err ? writer.abort(err) : writer.close();
+        }
+        cb(this._reader = this._writer = null);
+    }
+    _pull(size, reader) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            let r = null;
+            while (this.readable && !(r = yield reader.next(size || null)).done) {
+                if (size != null && r.value) {
+                    size -= r.value.byteLength;
+                }
+                if (!this.push(r.value) || size <= 0) {
+                    break;
+                }
+            }
+            if (((r === null || r === void 0 ? void 0 : r.done) || !this.readable)) {
+                this.push(null);
+                yield reader.cancel();
+            }
+            return !this.readable;
+        });
+    }
+}
+
+//# sourceMappingURL=writer.js.map
diff --git a/igv_component/node_modules/apache-arrow/io/node/writer.js.map b/igv_component/node_modules/apache-arrow/io/node/writer.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..092d4463c502fbf03edb409cad1fe089d37d3a08
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/writer.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/node/writer.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;;AAErB,mCAA+C;AAC/C,kDAAqD;AAIrD,cAAc;AACd,SAAgB,kCAAkC,CAA0D,OAAkD;IAC1J,OAAO,IAAI,uBAAuB,CAAC,IAAI,IAAI,CAAI,OAAO,CAAC,CAAC,CAAC;AAC7D,CAAC;AAFD,gFAEC;AAKD,cAAc;AACd,MAAM,uBAAiD,SAAQ,eAAM;IAIjE,YAAY,MAA4B,EAAE,OAAuB;QAC7D,KAAK,+BAAG,aAAa,EAAE,KAAK,IAAK,OAAO,KAAE,kBAAkB,EAAE,IAAI,EAAE,kBAAkB,EAAE,KAAK,IAAG,CAAC;QAJ7F,aAAQ,GAAG,KAAK,CAAC;QAKrB,IAAI,CAAC,OAAO,GAAG,MAAM,CAAC;QACtB,IAAI,CAAC,OAAO,GAAG,IAAI,2BAAe,CAAC,MAAM,CAAC,CAAC;IAC/C,CAAC;IACD,MAAM,CAAC,EAAO;QACV,MAAM,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC;QAC5B,MAAM,aAAN,MAAM,uBAAN,MAAM,CAAE,KAAK,EAAE,CAAC;QAChB,EAAE,IAAI,EAAE,EAAE,CAAC;IACf,CAAC;IACD,MAAM,CAAC,CAAM,EAAE,CAAS,EAAE,EAAM;QAC5B,MAAM,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC;QAC5B,MAAM,aAAN,MAAM,uBAAN,MAAM,CAAE,KAAK,CAAC,CAAC,CAAC,CAAC;QACjB,EAAE,IAAI,EAAE,EAAE,CAAC;QACX,OAAO,IAAI,CAAC;IAChB,CAAC;IACD,KAAK,CAAC,IAAY;QACd,MAAM,EAAE,GAAG,IAAI,CAAC,OAAO,CAAC;QACxB,IAAI,EAAE,IAAI,CAAC,IAAI,CAAC,QAAQ,IAAI,CAAC,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,EAAE;YAChD,CAAC,GAAS,EAAE,wDAAC,OAAA,IAAI,CAAC,QAAQ,GAAG,MAAM,IAAI,CAAC,KAAK,CAAC,IAAI,EAAE,EAAE,CAAC,CAAA,GAAA,CAAC,EAAE,CAAC;SAC9D;IACL,CAAC;IACD,QAAQ,CAAC,GAAiB,EAAE,EAAiC;QACzD,MAAM,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC;QAC5B,IAAI,MAAM,EAAE;YAAE,GAAG,CAAC,CAAC,CAAC,MAAM,CAAC,KAAK,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,MAAM,CAAC,KAAK,EAAE,CAAC;SAAE;QACzD,EAAE,CAAC,IAAI,CAAC,OAAO,GAAG,IAAI,CAAC,OAAO,GAAG,IAAI,CAAC,CAAC;IAC3C,CAAC;IACK,KAAK,CAAC,IAAY,EAAE,MAAuB;;YAC7C,IAAI,CAAC,GAAsC,IAAI,CAAC;YAChD,OAAO,IAAI,CAAC,QAAQ,IAAI,CAAC,CAAC,CAAC,GAAG,MAAM,MAAM,CAAC,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,CAAC,CAAC,IAAI,EAAE;gBACjE,IAAI,IAAI,IAAI,IAAI,IAAI,CAAC,CAAC,KAAK,EAAE;oBACzB,IAAI,IAAI,CAAC,CAAC,KAAK,CAAC,UAAU,CAAC;iBAC9B;gBACD,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,KAAK,CAAC,IAAI,IAAI,IAAI,CAAC,EAAE;oBAAE,MAAM;iBAAE;aACnD;YACD,IAAI,CAAC,CAAA,CAAC,aAAD,CAAC,uBAAD,CAAC,CAAE,IAAI,KAAI,CAAC,IAAI,CAAC,QAAQ,CAAC,EAAE;gBAC7B,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;gBAChB,MAAM,MAAM,CAAC,MAAM,EAAE,CAAC;aACzB;YACD,OAAO,CAAC,IAAI,CAAC,QAAQ,CAAC;QAC1B,CAAC;KAAA;CACJ","file":"writer.js","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/node/writer.mjs b/igv_component/node_modules/apache-arrow/io/node/writer.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..9e135fd67f55b2505e72b446f57fe8c9a2ebe08b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/writer.mjs
@@ -0,0 +1,76 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { __awaiter } from "tslib";
+import { Duplex } from 'stream';
+import { AsyncByteStream } from '../../io/stream.mjs';
+/** @ignore */
+export function recordBatchWriterThroughNodeStream(options) {
+    return new RecordBatchWriterDuplex(new this(options));
+}
+/** @ignore */
+class RecordBatchWriterDuplex extends Duplex {
+    constructor(writer, options) {
+        super(Object.assign(Object.assign({ allowHalfOpen: false }, options), { writableObjectMode: true, readableObjectMode: false }));
+        this._pulling = false;
+        this._writer = writer;
+        this._reader = new AsyncByteStream(writer);
+    }
+    _final(cb) {
+        const writer = this._writer;
+        writer === null || writer === void 0 ? void 0 : writer.close();
+        cb && cb();
+    }
+    _write(x, _, cb) {
+        const writer = this._writer;
+        writer === null || writer === void 0 ? void 0 : writer.write(x);
+        cb && cb();
+        return true;
+    }
+    _read(size) {
+        const it = this._reader;
+        if (it && !this._pulling && (this._pulling = true)) {
+            (() => __awaiter(this, void 0, void 0, function* () { return this._pulling = yield this._pull(size, it); }))();
+        }
+    }
+    _destroy(err, cb) {
+        const writer = this._writer;
+        if (writer) {
+            err ? writer.abort(err) : writer.close();
+        }
+        cb(this._reader = this._writer = null);
+    }
+    _pull(size, reader) {
+        return __awaiter(this, void 0, void 0, function* () {
+            let r = null;
+            while (this.readable && !(r = yield reader.next(size || null)).done) {
+                if (size != null && r.value) {
+                    size -= r.value.byteLength;
+                }
+                if (!this.push(r.value) || size <= 0) {
+                    break;
+                }
+            }
+            if (((r === null || r === void 0 ? void 0 : r.done) || !this.readable)) {
+                this.push(null);
+                yield reader.cancel();
+            }
+            return !this.readable;
+        });
+    }
+}
+
+//# sourceMappingURL=writer.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/io/node/writer.mjs.map b/igv_component/node_modules/apache-arrow/io/node/writer.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..ca92cdebfdf2dd3c70623cc871b96c121a3116ec
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/node/writer.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/node/writer.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;AAErB,OAAO,EAAE,MAAM,EAAiB,MAAM,QAAQ,CAAC;AAC/C,OAAO,EAAE,eAAe,EAAE,MAAM,oBAAoB,CAAC;AAIrD,cAAc;AACd,MAAM,UAAU,kCAAkC,CAA0D,OAAkD;IAC1J,OAAO,IAAI,uBAAuB,CAAC,IAAI,IAAI,CAAI,OAAO,CAAC,CAAC,CAAC;AAC7D,CAAC;AAKD,cAAc;AACd,MAAM,uBAAiD,SAAQ,MAAM;IAIjE,YAAY,MAA4B,EAAE,OAAuB;QAC7D,KAAK,+BAAG,aAAa,EAAE,KAAK,IAAK,OAAO,KAAE,kBAAkB,EAAE,IAAI,EAAE,kBAAkB,EAAE,KAAK,IAAG,CAAC;QAJ7F,aAAQ,GAAG,KAAK,CAAC;QAKrB,IAAI,CAAC,OAAO,GAAG,MAAM,CAAC;QACtB,IAAI,CAAC,OAAO,GAAG,IAAI,eAAe,CAAC,MAAM,CAAC,CAAC;IAC/C,CAAC;IACD,MAAM,CAAC,EAAO;QACV,MAAM,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC;QAC5B,MAAM,aAAN,MAAM,uBAAN,MAAM,CAAE,KAAK,EAAE,CAAC;QAChB,EAAE,IAAI,EAAE,EAAE,CAAC;IACf,CAAC;IACD,MAAM,CAAC,CAAM,EAAE,CAAS,EAAE,EAAM;QAC5B,MAAM,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC;QAC5B,MAAM,aAAN,MAAM,uBAAN,MAAM,CAAE,KAAK,CAAC,CAAC,CAAC,CAAC;QACjB,EAAE,IAAI,EAAE,EAAE,CAAC;QACX,OAAO,IAAI,CAAC;IAChB,CAAC;IACD,KAAK,CAAC,IAAY;QACd,MAAM,EAAE,GAAG,IAAI,CAAC,OAAO,CAAC;QACxB,IAAI,EAAE,IAAI,CAAC,IAAI,CAAC,QAAQ,IAAI,CAAC,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,EAAE;YAChD,CAAC,GAAS,EAAE,gDAAC,OAAA,IAAI,CAAC,QAAQ,GAAG,MAAM,IAAI,CAAC,KAAK,CAAC,IAAI,EAAE,EAAE,CAAC,CAAA,GAAA,CAAC,EAAE,CAAC;SAC9D;IACL,CAAC;IACD,QAAQ,CAAC,GAAiB,EAAE,EAAiC;QACzD,MAAM,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC;QAC5B,IAAI,MAAM,EAAE;YAAE,GAAG,CAAC,CAAC,CAAC,MAAM,CAAC,KAAK,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,MAAM,CAAC,KAAK,EAAE,CAAC;SAAE;QACzD,EAAE,CAAC,IAAI,CAAC,OAAO,GAAG,IAAI,CAAC,OAAO,GAAG,IAAI,CAAC,CAAC;IAC3C,CAAC;IACK,KAAK,CAAC,IAAY,EAAE,MAAuB;;YAC7C,IAAI,CAAC,GAAsC,IAAI,CAAC;YAChD,OAAO,IAAI,CAAC,QAAQ,IAAI,CAAC,CAAC,CAAC,GAAG,MAAM,MAAM,CAAC,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,CAAC,CAAC,IAAI,EAAE;gBACjE,IAAI,IAAI,IAAI,IAAI,IAAI,CAAC,CAAC,KAAK,EAAE;oBACzB,IAAI,IAAI,CAAC,CAAC,KAAK,CAAC,UAAU,CAAC;iBAC9B;gBACD,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,KAAK,CAAC,IAAI,IAAI,IAAI,CAAC,EAAE;oBAAE,MAAM;iBAAE;aACnD;YACD,IAAI,CAAC,CAAA,CAAC,aAAD,CAAC,uBAAD,CAAC,CAAE,IAAI,KAAI,CAAC,IAAI,CAAC,QAAQ,CAAC,EAAE;gBAC7B,IAAI,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC;gBAChB,MAAM,MAAM,CAAC,MAAM,EAAE,CAAC;aACzB;YACD,OAAO,CAAC,IAAI,CAAC,QAAQ,CAAC;QAC1B,CAAC;KAAA;CACJ","file":"writer.js","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/stream.d.ts b/igv_component/node_modules/apache-arrow/io/stream.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..624136751d2dd8f122dad134b9c0dd5e97338f48
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/stream.d.ts
@@ -0,0 +1,39 @@
+/// <reference types="node" />
+import { Readable, Writable, AsyncQueue } from './interfaces.js';
+import { ArrayBufferViewInput } from '../util/buffer.js';
+/** @ignore */
+export declare type WritableSink<T> = Writable<T> | WritableStream<T> | NodeJS.WritableStream | null;
+/** @ignore */
+export declare type ReadableSource<T> = Readable<T> | PromiseLike<T> | AsyncIterable<T> | ReadableStream<T> | NodeJS.ReadableStream | null;
+/** @ignore */
+export declare class AsyncByteQueue<T extends ArrayBufferViewInput = Uint8Array> extends AsyncQueue<Uint8Array, T> {
+    write(value: ArrayBufferViewInput | Uint8Array): void;
+    toString(sync: true): string;
+    toString(sync?: false): Promise<string>;
+    toUint8Array(sync: true): Uint8Array;
+    toUint8Array(sync?: false): Promise<Uint8Array>;
+}
+/** @ignore */
+export declare class ByteStream implements IterableIterator<Uint8Array> {
+    private source;
+    constructor(source?: Iterable<ArrayBufferViewInput> | ArrayBufferViewInput);
+    [Symbol.iterator](): this;
+    next(value?: any): IteratorResult<Uint8Array, null>;
+    throw(value?: any): any;
+    return(value?: any): any;
+    peek(size?: number | null): Uint8Array | null;
+    read(size?: number | null): Uint8Array | null;
+}
+/** @ignore */
+export declare class AsyncByteStream implements Readable<Uint8Array>, AsyncIterableIterator<Uint8Array> {
+    private source;
+    constructor(source?: PromiseLike<ArrayBufferViewInput> | Response | ReadableStream<ArrayBufferViewInput> | NodeJS.ReadableStream | AsyncIterable<ArrayBufferViewInput> | Iterable<ArrayBufferViewInput>);
+    [Symbol.asyncIterator](): this;
+    next(value?: any): Promise<IteratorResult<Uint8Array, null>>;
+    throw(value?: any): Promise<any>;
+    return(value?: any): Promise<any>;
+    get closed(): Promise<void>;
+    cancel(reason?: any): Promise<void>;
+    peek(size?: number | null): Promise<Uint8Array | null>;
+    read(size?: number | null): Promise<Uint8Array | null>;
+}
diff --git a/igv_component/node_modules/apache-arrow/io/stream.d.ts.map b/igv_component/node_modules/apache-arrow/io/stream.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..b2d9d107119e0eeeb4326c293ae0c10babc09c93
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/stream.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/stream.ts"],"names":[],"mappings":";AAmBA,OAAO,EAAiB,QAAQ,EAAE,QAAQ,EAAE,UAAU,EAAE,MAAM,iBAAiB,CAAC;AAChF,OAAO,EAAiC,oBAAoB,EAAE,MAAM,mBAAmB,CAAC;AAQxF,cAAc;AACd,oBAAY,YAAY,CAAC,CAAC,IAAI,QAAQ,CAAC,CAAC,CAAC,GAAG,cAAc,CAAC,CAAC,CAAC,GAAG,MAAM,CAAC,cAAc,GAAG,IAAI,CAAC;AAC7F,cAAc;AACd,oBAAY,cAAc,CAAC,CAAC,IAAI,QAAQ,CAAC,CAAC,CAAC,GAAG,WAAW,CAAC,CAAC,CAAC,GAAG,aAAa,CAAC,CAAC,CAAC,GAAG,cAAc,CAAC,CAAC,CAAC,GAAG,MAAM,CAAC,cAAc,GAAG,IAAI,CAAC;AAEnI,cAAc;AACd,qBAAa,cAAc,CAAC,CAAC,SAAS,oBAAoB,GAAG,UAAU,CAAE,SAAQ,UAAU,CAAC,UAAU,EAAE,CAAC,CAAC;IAC/F,KAAK,CAAC,KAAK,EAAE,oBAAoB,GAAG,UAAU;IAK9C,QAAQ,CAAC,IAAI,EAAE,IAAI,GAAG,MAAM;IAC5B,QAAQ,CAAC,IAAI,CAAC,EAAE,KAAK,GAAG,OAAO,CAAC,MAAM,CAAC;IAMvC,YAAY,CAAC,IAAI,EAAE,IAAI,GAAG,UAAU;IACpC,YAAY,CAAC,IAAI,CAAC,EAAE,KAAK,GAAG,OAAO,CAAC,UAAU,CAAC;CAYzD;AAED,cAAc;AACd,qBAAa,UAAW,YAAW,gBAAgB,CAAC,UAAU,CAAC;IAC3D,QAAgB,MAAM,CAA+B;gBACzC,MAAM,CAAC,EAAE,QAAQ,CAAC,oBAAoB,CAAC,GAAG,oBAAoB;IAK1E,CAAC,MAAM,CAAC,QAAQ,CAAC;IACV,IAAI,CAAC,KAAK,CAAC,EAAE,GAAG;IAChB,KAAK,CAAC,KAAK,CAAC,EAAE,GAAG;IACjB,MAAM,CAAC,KAAK,CAAC,EAAE,GAAG;IAClB,IAAI,CAAC,IAAI,CAAC,EAAE,MAAM,GAAG,IAAI;IACzB,IAAI,CAAC,IAAI,CAAC,EAAE,MAAM,GAAG,IAAI;CACnC;AAED,cAAc;AACd,qBAAa,eAAgB,YAAW,QAAQ,CAAC,UAAU,CAAC,EAAE,qBAAqB,CAAC,UAAU,CAAC;IAC3F,QAAgB,MAAM,CAAoC;gBAC9C,MAAM,CAAC,EAAE,WAAW,CAAC,oBAAoB,CAAC,GAAG,QAAQ,GAAG,cAAc,CAAC,oBAAoB,CAAC,GAAG,MAAM,CAAC,cAAc,GAAG,aAAa,CAAC,oBAAoB,CAAC,GAAG,QAAQ,CAAC,oBAAoB,CAAC;IAmBvM,CAAC,MAAM,CAAC,aAAa,CAAC;IACf,IAAI,CAAC,KAAK,CAAC,EAAE,GAAG;IAChB,KAAK,CAAC,KAAK,CAAC,EAAE,GAAG;IACjB,MAAM,CAAC,KAAK,CAAC,EAAE,GAAG;IACzB,IAAW,MAAM,IAAI,OAAO,CAAC,IAAI,CAAC,CAA+B;IAC1D,MAAM,CAAC,MAAM,CAAC,EAAE,GAAG;IACnB,IAAI,CAAC,IAAI,CAAC,EAAE,MAAM,GAAG,IAAI;IACzB,IAAI,CAAC,IAAI,CAAC,EAAE,MAAM,GAAG,IAAI;CACnC","file":"stream.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/stream.js b/igv_component/node_modules/apache-arrow/io/stream.js
new file mode 100644
index 0000000000000000000000000000000000000000..b5768332c8a2666865546596e998a5742304e424
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/stream.js
@@ -0,0 +1,164 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.AsyncByteStream = exports.ByteStream = exports.AsyncByteQueue = void 0;
+const tslib_1 = require("tslib");
+const adapters_js_1 = tslib_1.__importDefault(require("./adapters.js"));
+const utf8_js_1 = require("../util/utf8.js");
+const interfaces_js_1 = require("./interfaces.js");
+const buffer_js_1 = require("../util/buffer.js");
+const compat_js_1 = require("../util/compat.js");
+/** @ignore */
+class AsyncByteQueue extends interfaces_js_1.AsyncQueue {
+    write(value) {
+        if ((value = (0, buffer_js_1.toUint8Array)(value)).byteLength > 0) {
+            return super.write(value);
+        }
+    }
+    toString(sync = false) {
+        return sync
+            ? (0, utf8_js_1.decodeUtf8)(this.toUint8Array(true))
+            : this.toUint8Array(false).then(utf8_js_1.decodeUtf8);
+    }
+    toUint8Array(sync = false) {
+        return sync ? (0, buffer_js_1.joinUint8Arrays)(this._values)[0] : (() => tslib_1.__awaiter(this, void 0, void 0, function* () {
+            var e_1, _a;
+            const buffers = [];
+            let byteLength = 0;
+            try {
+                for (var _b = tslib_1.__asyncValues(this), _c; _c = yield _b.next(), !_c.done;) {
+                    const chunk = _c.value;
+                    buffers.push(chunk);
+                    byteLength += chunk.byteLength;
+                }
+            }
+            catch (e_1_1) { e_1 = { error: e_1_1 }; }
+            finally {
+                try {
+                    if (_c && !_c.done && (_a = _b.return)) yield _a.call(_b);
+                }
+                finally { if (e_1) throw e_1.error; }
+            }
+            return (0, buffer_js_1.joinUint8Arrays)(buffers, byteLength)[0];
+        }))();
+    }
+}
+exports.AsyncByteQueue = AsyncByteQueue;
+/** @ignore */
+class ByteStream {
+    constructor(source) {
+        if (source) {
+            this.source = new ByteStreamSource(adapters_js_1.default.fromIterable(source));
+        }
+    }
+    [Symbol.iterator]() { return this; }
+    next(value) { return this.source.next(value); }
+    throw(value) { return this.source.throw(value); }
+    return(value) { return this.source.return(value); }
+    peek(size) { return this.source.peek(size); }
+    read(size) { return this.source.read(size); }
+}
+exports.ByteStream = ByteStream;
+/** @ignore */
+class AsyncByteStream {
+    constructor(source) {
+        if (source instanceof AsyncByteStream) {
+            this.source = source.source;
+        }
+        else if (source instanceof AsyncByteQueue) {
+            this.source = new AsyncByteStreamSource(adapters_js_1.default.fromAsyncIterable(source));
+        }
+        else if ((0, compat_js_1.isReadableNodeStream)(source)) {
+            this.source = new AsyncByteStreamSource(adapters_js_1.default.fromNodeStream(source));
+        }
+        else if ((0, compat_js_1.isReadableDOMStream)(source)) {
+            this.source = new AsyncByteStreamSource(adapters_js_1.default.fromDOMStream(source));
+        }
+        else if ((0, compat_js_1.isFetchResponse)(source)) {
+            this.source = new AsyncByteStreamSource(adapters_js_1.default.fromDOMStream(source.body));
+        }
+        else if ((0, compat_js_1.isIterable)(source)) {
+            this.source = new AsyncByteStreamSource(adapters_js_1.default.fromIterable(source));
+        }
+        else if ((0, compat_js_1.isPromise)(source)) {
+            this.source = new AsyncByteStreamSource(adapters_js_1.default.fromAsyncIterable(source));
+        }
+        else if ((0, compat_js_1.isAsyncIterable)(source)) {
+            this.source = new AsyncByteStreamSource(adapters_js_1.default.fromAsyncIterable(source));
+        }
+    }
+    [Symbol.asyncIterator]() { return this; }
+    next(value) { return this.source.next(value); }
+    throw(value) { return this.source.throw(value); }
+    return(value) { return this.source.return(value); }
+    get closed() { return this.source.closed; }
+    cancel(reason) { return this.source.cancel(reason); }
+    peek(size) { return this.source.peek(size); }
+    read(size) { return this.source.read(size); }
+}
+exports.AsyncByteStream = AsyncByteStream;
+/** @ignore */
+class ByteStreamSource {
+    constructor(source) {
+        this.source = source;
+    }
+    cancel(reason) { this.return(reason); }
+    peek(size) { return this.next(size, 'peek').value; }
+    read(size) { return this.next(size, 'read').value; }
+    next(size, cmd = 'read') { return this.source.next({ cmd, size }); }
+    throw(value) { return Object.create((this.source.throw && this.source.throw(value)) || interfaces_js_1.ITERATOR_DONE); }
+    return(value) { return Object.create((this.source.return && this.source.return(value)) || interfaces_js_1.ITERATOR_DONE); }
+}
+/** @ignore */
+class AsyncByteStreamSource {
+    constructor(source) {
+        this.source = source;
+        this._closedPromise = new Promise((r) => this._closedPromiseResolve = r);
+    }
+    cancel(reason) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () { yield this.return(reason); });
+    }
+    get closed() { return this._closedPromise; }
+    read(size) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () { return (yield this.next(size, 'read')).value; });
+    }
+    peek(size) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () { return (yield this.next(size, 'peek')).value; });
+    }
+    next(size, cmd = 'read') {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () { return (yield this.source.next({ cmd, size })); });
+    }
+    throw(value) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            const result = (this.source.throw && (yield this.source.throw(value))) || interfaces_js_1.ITERATOR_DONE;
+            this._closedPromiseResolve && this._closedPromiseResolve();
+            this._closedPromiseResolve = undefined;
+            return Object.create(result);
+        });
+    }
+    return(value) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            const result = (this.source.return && (yield this.source.return(value))) || interfaces_js_1.ITERATOR_DONE;
+            this._closedPromiseResolve && this._closedPromiseResolve();
+            this._closedPromiseResolve = undefined;
+            return Object.create(result);
+        });
+    }
+}
+
+//# sourceMappingURL=stream.js.map
diff --git a/igv_component/node_modules/apache-arrow/io/stream.js.map b/igv_component/node_modules/apache-arrow/io/stream.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..870758f2bd54873460f3c2398b24c56a4753d493
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/stream.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/stream.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;;AAErB,wEAA2C;AAC3C,6CAA6C;AAC7C,mDAAgF;AAChF,iDAAwF;AAExF,iDAI2B;AAO3B,cAAc;AACd,MAAa,cAA4D,SAAQ,0BAAyB;IAC/F,KAAK,CAAC,KAAwC;QACjD,IAAI,CAAC,KAAK,GAAG,IAAA,wBAAY,EAAC,KAAK,CAAC,CAAC,CAAC,UAAU,GAAG,CAAC,EAAE;YAC9C,OAAO,KAAK,CAAC,KAAK,CAAC,KAAU,CAAC,CAAC;SAClC;IACL,CAAC;IAGM,QAAQ,CAAC,IAAI,GAAG,KAAK;QACxB,OAAO,IAAI;YACP,CAAC,CAAC,IAAA,oBAAU,EAAC,IAAI,CAAC,YAAY,CAAC,IAAI,CAAC,CAAC;YACrC,CAAC,CAAC,IAAI,CAAC,YAAY,CAAC,KAAK,CAAC,CAAC,IAAI,CAAC,oBAAU,CAAC,CAAC;IACpD,CAAC;IAGM,YAAY,CAAC,IAAI,GAAG,KAAK;QAC5B,OAAO,IAAI,CAAC,CAAC,CAAC,IAAA,2BAAe,EAAC,IAAI,CAAC,OAAgB,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,GAAS,EAAE;;YAClE,MAAM,OAAO,GAAG,EAAE,CAAC;YACnB,IAAI,UAAU,GAAG,CAAC,CAAC;;gBACnB,KAA0B,IAAA,KAAA,sBAAA,IAAI,CAAA,IAAA;oBAAnB,MAAM,KAAK,WAAA,CAAA;oBAClB,OAAO,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC;oBACpB,UAAU,IAAI,KAAK,CAAC,UAAU,CAAC;iBAClC;;;;;;;;;YACD,OAAO,IAAA,2BAAe,EAAC,OAAO,EAAE,UAAU,CAAC,CAAC,CAAC,CAAC,CAAC;QACnD,CAAC,CAAA,CAAC,EAAE,CAAC;IACT,CAAC;CACJ;AA1BD,wCA0BC;AAED,cAAc;AACd,MAAa,UAAU;IAEnB,YAAY,MAA8D;QACtE,IAAI,MAAM,EAAE;YACR,IAAI,CAAC,MAAM,GAAG,IAAI,gBAAgB,CAAC,qBAAc,CAAC,YAAY,CAAC,MAAM,CAAC,CAAC,CAAC;SAC3E;IACL,CAAC;IACD,CAAC,MAAM,CAAC,QAAQ,CAAC,KAAK,OAAO,IAAI,CAAC,CAAC,CAAC;IAC7B,IAAI,CAAC,KAAW,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IACrD,KAAK,CAAC,KAAW,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,KAAK,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IACvD,MAAM,CAAC,KAAW,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IACzD,IAAI,CAAC,IAAoB,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC;IAC7D,IAAI,CAAC,IAAoB,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC;CACvE;AAbD,gCAaC;AAED,cAAc;AACd,MAAa,eAAe;IAExB,YAAY,MAA2L;QACnM,IAAI,MAAM,YAAY,eAAe,EAAE;YACnC,IAAI,CAAC,MAAM,GAAI,MAA0B,CAAC,MAAM,CAAC;SACpD;aAAM,IAAI,MAAM,YAAY,cAAc,EAAE;YACzC,IAAI,CAAC,MAAM,GAAG,IAAI,qBAAqB,CAAC,qBAAc,CAAC,iBAAiB,CAAC,MAAM,CAAC,CAAC,CAAC;SACrF;aAAM,IAAI,IAAA,gCAAoB,EAAC,MAAM,CAAC,EAAE;YACrC,IAAI,CAAC,MAAM,GAAG,IAAI,qBAAqB,CAAC,qBAAc,CAAC,cAAc,CAAC,MAAM,CAAC,CAAC,CAAC;SAClF;aAAM,IAAI,IAAA,+BAAmB,EAAuB,MAAM,CAAC,EAAE;YAC1D,IAAI,CAAC,MAAM,GAAG,IAAI,qBAAqB,CAAC,qBAAc,CAAC,aAAa,CAAC,MAAM,CAAC,CAAC,CAAC;SACjF;aAAM,IAAI,IAAA,2BAAe,EAAC,MAAM,CAAC,EAAE;YAChC,IAAI,CAAC,MAAM,GAAG,IAAI,qBAAqB,CAAC,qBAAc,CAAC,aAAa,CAAC,MAAM,CAAC,IAAK,CAAC,CAAC,CAAC;SACvF;aAAM,IAAI,IAAA,sBAAU,EAAuB,MAAM,CAAC,EAAE;YACjD,IAAI,CAAC,MAAM,GAAG,IAAI,qBAAqB,CAAC,qBAAc,CAAC,YAAY,CAAC,MAAM,CAAC,CAAC,CAAC;SAChF;aAAM,IAAI,IAAA,qBAAS,EAAuB,MAAM,CAAC,EAAE;YAChD,IAAI,CAAC,MAAM,GAAG,IAAI,qBAAqB,CAAC,qBAAc,CAAC,iBAAiB,CAAC,MAAM,CAAC,CAAC,CAAC;SACrF;aAAM,IAAI,IAAA,2BAAe,EAAuB,MAAM,CAAC,EAAE;YACtD,IAAI,CAAC,MAAM,GAAG,IAAI,qBAAqB,CAAC,qBAAc,CAAC,iBAAiB,CAAC,MAAM,CAAC,CAAC,CAAC;SACrF;IACL,CAAC;IACD,CAAC,MAAM,CAAC,aAAa,CAAC,KAAK,OAAO,IAAI,CAAC,CAAC,CAAC;IAClC,IAAI,CAAC,KAAW,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IACrD,KAAK,CAAC,KAAW,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,KAAK,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IACvD,MAAM,CAAC,KAAW,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IAChE,IAAW,MAAM,KAAoB,OAAO,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC,CAAC;IAC1D,MAAM,CAAC,MAAY,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC;IAC3D,IAAI,CAAC,IAAoB,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC;IAC7D,IAAI,CAAC,IAAoB,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC;CACvE;AA7BD,0CA6BC;AAOD,cAAc;AACd,MAAM,gBAAgB;IAClB,YAAsB,MAAmC;QAAnC,WAAM,GAAN,MAAM,CAA6B;IAAI,CAAC;IACvD,MAAM,CAAC,MAAY,IAAI,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC;IAC7C,IAAI,CAAC,IAAoB,IAAc,OAAO,IAAI,CAAC,IAAI,CAAC,IAAI,EAAE,MAAM,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC;IAC9E,IAAI,CAAC,IAAoB,IAAc,OAAO,IAAI,CAAC,IAAI,CAAC,IAAI,EAAE,MAAM,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC;IAC9E,IAAI,CAAC,IAAoB,EAAE,MAAuB,MAAM,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,EAAE,GAAG,EAAE,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC;IACrG,KAAK,CAAC,KAAW,IAAI,OAAO,MAAM,CAAC,MAAM,CAAC,CAAC,IAAI,CAAC,MAAM,CAAC,KAAK,IAAI,IAAI,CAAC,MAAM,CAAC,KAAK,CAAC,KAAK,CAAC,CAAC,IAAI,6BAAa,CAAC,CAAC,CAAC,CAAC;IAC9G,MAAM,CAAC,KAAW,IAAI,OAAO,MAAM,CAAC,MAAM,CAAC,CAAC,IAAI,CAAC,MAAM,CAAC,MAAM,IAAI,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC,IAAI,6BAAa,CAAC,CAAC,CAAC,CAAC;CAC3H;AAED,cAAc;AACd,MAAM,qBAAqB;IAIvB,YAAsB,MAAsE;QAAtE,WAAM,GAAN,MAAM,CAAgE;QACxF,IAAI,CAAC,cAAc,GAAG,IAAI,OAAO,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,IAAI,CAAC,qBAAqB,GAAG,CAAC,CAAC,CAAC;IAC7E,CAAC;IACY,MAAM,CAAC,MAAY;sEAAI,MAAM,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC;KAAA;IAChE,IAAW,MAAM,KAAoB,OAAO,IAAI,CAAC,cAAc,CAAC,CAAC,CAAC;IACrD,IAAI,CAAC,IAAoB;sEAAuB,OAAO,CAAC,MAAM,IAAI,CAAC,IAAI,CAAC,IAAI,EAAE,MAAM,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC;KAAA;IAC/F,IAAI,CAAC,IAAoB;sEAAuB,OAAO,CAAC,MAAM,IAAI,CAAC,IAAI,CAAC,IAAI,EAAE,MAAM,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC;KAAA;IAC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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/stream.mjs b/igv_component/node_modules/apache-arrow/io/stream.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..b14bd38010113b3d20eedaed947a81d16402e4d3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/stream.mjs
@@ -0,0 +1,158 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { __asyncValues, __awaiter } from "tslib";
+import streamAdapters from './adapters.mjs';
+import { decodeUtf8 } from '../util/utf8.mjs';
+import { ITERATOR_DONE, AsyncQueue } from './interfaces.mjs';
+import { toUint8Array, joinUint8Arrays } from '../util/buffer.mjs';
+import { isPromise, isFetchResponse, isIterable, isAsyncIterable, isReadableDOMStream, isReadableNodeStream } from '../util/compat.mjs';
+/** @ignore */
+export class AsyncByteQueue extends AsyncQueue {
+    write(value) {
+        if ((value = toUint8Array(value)).byteLength > 0) {
+            return super.write(value);
+        }
+    }
+    toString(sync = false) {
+        return sync
+            ? decodeUtf8(this.toUint8Array(true))
+            : this.toUint8Array(false).then(decodeUtf8);
+    }
+    toUint8Array(sync = false) {
+        return sync ? joinUint8Arrays(this._values)[0] : (() => __awaiter(this, void 0, void 0, function* () {
+            var e_1, _a;
+            const buffers = [];
+            let byteLength = 0;
+            try {
+                for (var _b = __asyncValues(this), _c; _c = yield _b.next(), !_c.done;) {
+                    const chunk = _c.value;
+                    buffers.push(chunk);
+                    byteLength += chunk.byteLength;
+                }
+            }
+            catch (e_1_1) { e_1 = { error: e_1_1 }; }
+            finally {
+                try {
+                    if (_c && !_c.done && (_a = _b.return)) yield _a.call(_b);
+                }
+                finally { if (e_1) throw e_1.error; }
+            }
+            return joinUint8Arrays(buffers, byteLength)[0];
+        }))();
+    }
+}
+/** @ignore */
+export class ByteStream {
+    constructor(source) {
+        if (source) {
+            this.source = new ByteStreamSource(streamAdapters.fromIterable(source));
+        }
+    }
+    [Symbol.iterator]() { return this; }
+    next(value) { return this.source.next(value); }
+    throw(value) { return this.source.throw(value); }
+    return(value) { return this.source.return(value); }
+    peek(size) { return this.source.peek(size); }
+    read(size) { return this.source.read(size); }
+}
+/** @ignore */
+export class AsyncByteStream {
+    constructor(source) {
+        if (source instanceof AsyncByteStream) {
+            this.source = source.source;
+        }
+        else if (source instanceof AsyncByteQueue) {
+            this.source = new AsyncByteStreamSource(streamAdapters.fromAsyncIterable(source));
+        }
+        else if (isReadableNodeStream(source)) {
+            this.source = new AsyncByteStreamSource(streamAdapters.fromNodeStream(source));
+        }
+        else if (isReadableDOMStream(source)) {
+            this.source = new AsyncByteStreamSource(streamAdapters.fromDOMStream(source));
+        }
+        else if (isFetchResponse(source)) {
+            this.source = new AsyncByteStreamSource(streamAdapters.fromDOMStream(source.body));
+        }
+        else if (isIterable(source)) {
+            this.source = new AsyncByteStreamSource(streamAdapters.fromIterable(source));
+        }
+        else if (isPromise(source)) {
+            this.source = new AsyncByteStreamSource(streamAdapters.fromAsyncIterable(source));
+        }
+        else if (isAsyncIterable(source)) {
+            this.source = new AsyncByteStreamSource(streamAdapters.fromAsyncIterable(source));
+        }
+    }
+    [Symbol.asyncIterator]() { return this; }
+    next(value) { return this.source.next(value); }
+    throw(value) { return this.source.throw(value); }
+    return(value) { return this.source.return(value); }
+    get closed() { return this.source.closed; }
+    cancel(reason) { return this.source.cancel(reason); }
+    peek(size) { return this.source.peek(size); }
+    read(size) { return this.source.read(size); }
+}
+/** @ignore */
+class ByteStreamSource {
+    constructor(source) {
+        this.source = source;
+    }
+    cancel(reason) { this.return(reason); }
+    peek(size) { return this.next(size, 'peek').value; }
+    read(size) { return this.next(size, 'read').value; }
+    next(size, cmd = 'read') { return this.source.next({ cmd, size }); }
+    throw(value) { return Object.create((this.source.throw && this.source.throw(value)) || ITERATOR_DONE); }
+    return(value) { return Object.create((this.source.return && this.source.return(value)) || ITERATOR_DONE); }
+}
+/** @ignore */
+class AsyncByteStreamSource {
+    constructor(source) {
+        this.source = source;
+        this._closedPromise = new Promise((r) => this._closedPromiseResolve = r);
+    }
+    cancel(reason) {
+        return __awaiter(this, void 0, void 0, function* () { yield this.return(reason); });
+    }
+    get closed() { return this._closedPromise; }
+    read(size) {
+        return __awaiter(this, void 0, void 0, function* () { return (yield this.next(size, 'read')).value; });
+    }
+    peek(size) {
+        return __awaiter(this, void 0, void 0, function* () { return (yield this.next(size, 'peek')).value; });
+    }
+    next(size, cmd = 'read') {
+        return __awaiter(this, void 0, void 0, function* () { return (yield this.source.next({ cmd, size })); });
+    }
+    throw(value) {
+        return __awaiter(this, void 0, void 0, function* () {
+            const result = (this.source.throw && (yield this.source.throw(value))) || ITERATOR_DONE;
+            this._closedPromiseResolve && this._closedPromiseResolve();
+            this._closedPromiseResolve = undefined;
+            return Object.create(result);
+        });
+    }
+    return(value) {
+        return __awaiter(this, void 0, void 0, function* () {
+            const result = (this.source.return && (yield this.source.return(value))) || ITERATOR_DONE;
+            this._closedPromiseResolve && this._closedPromiseResolve();
+            this._closedPromiseResolve = undefined;
+            return Object.create(result);
+        });
+    }
+}
+
+//# sourceMappingURL=stream.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/io/stream.mjs.map b/igv_component/node_modules/apache-arrow/io/stream.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..ba15439327355e0216ce3e53b8a86891ea55d3b8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/stream.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/stream.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;AAErB,OAAO,cAAc,MAAM,eAAe,CAAC;AAC3C,OAAO,EAAE,UAAU,EAAE,MAAM,iBAAiB,CAAC;AAC7C,OAAO,EAAE,aAAa,EAAsB,UAAU,EAAE,MAAM,iBAAiB,CAAC;AAChF,OAAO,EAAE,YAAY,EAAE,eAAe,EAAwB,MAAM,mBAAmB,CAAC;AAExF,OAAO,EACH,SAAS,EAAE,eAAe,EAC1B,UAAU,EAAE,eAAe,EAC3B,mBAAmB,EAAE,oBAAoB,EAC5C,MAAM,mBAAmB,CAAC;AAO3B,cAAc;AACd,MAAM,OAAO,cAA4D,SAAQ,UAAyB;IAC/F,KAAK,CAAC,KAAwC;QACjD,IAAI,CAAC,KAAK,GAAG,YAAY,CAAC,KAAK,CAAC,CAAC,CAAC,UAAU,GAAG,CAAC,EAAE;YAC9C,OAAO,KAAK,CAAC,KAAK,CAAC,KAAU,CAAC,CAAC;SAClC;IACL,CAAC;IAGM,QAAQ,CAAC,IAAI,GAAG,KAAK;QACxB,OAAO,IAAI;YACP,CAAC,CAAC,UAAU,CAAC,IAAI,CAAC,YAAY,CAAC,IAAI,CAAC,CAAC;YACrC,CAAC,CAAC,IAAI,CAAC,YAAY,CAAC,KAAK,CAAC,CAAC,IAAI,CAAC,UAAU,CAAC,CAAC;IACpD,CAAC;IAGM,YAAY,CAAC,IAAI,GAAG,KAAK;QAC5B,OAAO,IAAI,CAAC,CAAC,CAAC,eAAe,CAAC,IAAI,CAAC,OAAgB,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,GAAS,EAAE;;YAClE,MAAM,OAAO,GAAG,EAAE,CAAC;YACnB,IAAI,UAAU,GAAG,CAAC,CAAC;;gBACnB,KAA0B,IAAA,KAAA,cAAA,IAAI,CAAA,IAAA;oBAAnB,MAAM,KAAK,WAAA,CAAA;oBAClB,OAAO,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC;oBACpB,UAAU,IAAI,KAAK,CAAC,UAAU,CAAC;iBAClC;;;;;;;;;YACD,OAAO,eAAe,CAAC,OAAO,EAAE,UAAU,CAAC,CAAC,CAAC,CAAC,CAAC;QACnD,CAAC,CAAA,CAAC,EAAE,CAAC;IACT,CAAC;CACJ;AAED,cAAc;AACd,MAAM,OAAO,UAAU;IAEnB,YAAY,MAA8D;QACtE,IAAI,MAAM,EAAE;YACR,IAAI,CAAC,MAAM,GAAG,IAAI,gBAAgB,CAAC,cAAc,CAAC,YAAY,CAAC,MAAM,CAAC,CAAC,CAAC;SAC3E;IACL,CAAC;IACD,CAAC,MAAM,CAAC,QAAQ,CAAC,KAAK,OAAO,IAAI,CAAC,CAAC,CAAC;IAC7B,IAAI,CAAC,KAAW,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IACrD,KAAK,CAAC,KAAW,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,KAAK,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IACvD,MAAM,CAAC,KAAW,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IACzD,IAAI,CAAC,IAAoB,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC;IAC7D,IAAI,CAAC,IAAoB,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC;CACvE;AAED,cAAc;AACd,MAAM,OAAO,eAAe;IAExB,YAAY,MAA2L;QACnM,IAAI,MAAM,YAAY,eAAe,EAAE;YACnC,IAAI,CAAC,MAAM,GAAI,MAA0B,CAAC,MAAM,CAAC;SACpD;aAAM,IAAI,MAAM,YAAY,cAAc,EAAE;YACzC,IAAI,CAAC,MAAM,GAAG,IAAI,qBAAqB,CAAC,cAAc,CAAC,iBAAiB,CAAC,MAAM,CAAC,CAAC,CAAC;SACrF;aAAM,IAAI,oBAAoB,CAAC,MAAM,CAAC,EAAE;YACrC,IAAI,CAAC,MAAM,GAAG,IAAI,qBAAqB,CAAC,cAAc,CAAC,cAAc,CAAC,MAAM,CAAC,CAAC,CAAC;SAClF;aAAM,IAAI,mBAAmB,CAAuB,MAAM,CAAC,EAAE;YAC1D,IAAI,CAAC,MAAM,GAAG,IAAI,qBAAqB,CAAC,cAAc,CAAC,aAAa,CAAC,MAAM,CAAC,CAAC,CAAC;SACjF;aAAM,IAAI,eAAe,CAAC,MAAM,CAAC,EAAE;YAChC,IAAI,CAAC,MAAM,GAAG,IAAI,qBAAqB,CAAC,cAAc,CAAC,aAAa,CAAC,MAAM,CAAC,IAAK,CAAC,CAAC,CAAC;SACvF;aAAM,IAAI,UAAU,CAAuB,MAAM,CAAC,EAAE;YACjD,IAAI,CAAC,MAAM,GAAG,IAAI,qBAAqB,CAAC,cAAc,CAAC,YAAY,CAAC,MAAM,CAAC,CAAC,CAAC;SAChF;aAAM,IAAI,SAAS,CAAuB,MAAM,CAAC,EAAE;YAChD,IAAI,CAAC,MAAM,GAAG,IAAI,qBAAqB,CAAC,cAAc,CAAC,iBAAiB,CAAC,MAAM,CAAC,CAAC,CAAC;SACrF;aAAM,IAAI,eAAe,CAAuB,MAAM,CAAC,EAAE;YACtD,IAAI,CAAC,MAAM,GAAG,IAAI,qBAAqB,CAAC,cAAc,CAAC,iBAAiB,CAAC,MAAM,CAAC,CAAC,CAAC;SACrF;IACL,CAAC;IACD,CAAC,MAAM,CAAC,aAAa,CAAC,KAAK,OAAO,IAAI,CAAC,CAAC,CAAC;IAClC,IAAI,CAAC,KAAW,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IACrD,KAAK,CAAC,KAAW,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,KAAK,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IACvD,MAAM,CAAC,KAAW,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IAChE,IAAW,MAAM,KAAoB,OAAO,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC,CAAC;IAC1D,MAAM,CAAC,MAAY,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC;IAC3D,IAAI,CAAC,IAAoB,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC;IAC7D,IAAI,CAAC,IAAoB,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC;CACvE;AAOD,cAAc;AACd,MAAM,gBAAgB;IAClB,YAAsB,MAAmC;QAAnC,WAAM,GAAN,MAAM,CAA6B;IAAI,CAAC;IACvD,MAAM,CAAC,MAAY,IAAI,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC;IAC7C,IAAI,CAAC,IAAoB,IAAc,OAAO,IAAI,CAAC,IAAI,CAAC,IAAI,EAAE,MAAM,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC;IAC9E,IAAI,CAAC,IAAoB,IAAc,OAAO,IAAI,CAAC,IAAI,CAAC,IAAI,EAAE,MAAM,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC;IAC9E,IAAI,CAAC,IAAoB,EAAE,MAAuB,MAAM,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,EAAE,GAAG,EAAE,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC;IACrG,KAAK,CAAC,KAAW,IAAI,OAAO,MAAM,CAAC,MAAM,CAAC,CAAC,IAAI,CAAC,MAAM,CAAC,KAAK,IAAI,IAAI,CAAC,MAAM,CAAC,KAAK,CAAC,KAAK,CAAC,CAAC,IAAI,aAAa,CAAC,CAAC,CAAC,CAAC;IAC9G,MAAM,CAAC,KAAW,IAAI,OAAO,MAAM,CAAC,MAAM,CAAC,CAAC,IAAI,CAAC,MAAM,CAAC,MAAM,IAAI,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC,IAAI,aAAa,CAAC,CAAC,CAAC,CAAC;CAC3H;AAED,cAAc;AACd,MAAM,qBAAqB;IAIvB,YAAsB,MAAsE;QAAtE,WAAM,GAAN,MAAM,CAAgE;QACxF,IAAI,CAAC,cAAc,GAAG,IAAI,OAAO,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,IAAI,CAAC,qBAAqB,GAAG,CAAC,CAAC,CAAC;IAC7E,CAAC;IACY,MAAM,CAAC,MAAY;8DAAI,MAAM,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC;KAAA;IAChE,IAAW,MAAM,KAAoB,OAAO,IAAI,CAAC,cAAc,CAAC,CAAC,CAAC;IACrD,IAAI,CAAC,IAAoB;8DAAuB,OAAO,CAAC,MAAM,IAAI,CAAC,IAAI,CAAC,IAAI,EAAE,MAAM,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC;KAAA;I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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/builder.d.ts b/igv_component/node_modules/apache-arrow/io/whatwg/builder.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..fbb747ca19c7a8e84cc621cd36743c9c73c9a6c9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/builder.d.ts
@@ -0,0 +1,36 @@
+import { DataType } from '../../type.js';
+import { Vector } from '../../vector.js';
+import { Builder, BuilderOptions } from '../../builder.js';
+/** @ignore */
+export interface BuilderTransformOptions<T extends DataType = any, TNull = any> extends BuilderOptions<T, TNull> {
+    queueingStrategy?: 'bytes' | 'count';
+    dictionaryHashFunction?: (value: any) => string | number;
+    readableStrategy?: {
+        highWaterMark?: number;
+        size?: any;
+        type?: 'bytes';
+    };
+    writableStrategy?: {
+        highWaterMark?: number;
+        size?: any;
+        type?: 'bytes';
+    };
+    valueToChildTypeId?: (builder: Builder<T, TNull>, value: any, offset: number) => number;
+}
+/** @ignore */
+export declare function builderThroughDOMStream<T extends DataType = any, TNull = any>(options: BuilderTransformOptions<T, TNull>): BuilderTransform<T, TNull>;
+/** @ignore */
+export declare class BuilderTransform<T extends DataType = any, TNull = any> {
+    readable: ReadableStream<Vector<T>>;
+    writable: WritableStream<T['TValue'] | TNull>;
+    _controller: ReadableStreamDefaultController<Vector<T>> | null;
+    private _numChunks;
+    private _finished;
+    private _bufferedSize;
+    private _builder;
+    private _getSize;
+    constructor(options: BuilderTransformOptions<T, TNull>);
+    private _writeValueAndReturnChunkSize;
+    private _maybeFlush;
+    private _enqueue;
+}
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/builder.d.ts.map b/igv_component/node_modules/apache-arrow/io/whatwg/builder.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..197321021ef64dc270a967419b21ffdf273b015c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/builder.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/whatwg/builder.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,QAAQ,EAAE,MAAM,eAAe,CAAC;AACzC,OAAO,EAAE,MAAM,EAAE,MAAM,iBAAiB,CAAC;AACzC,OAAO,EAAE,OAAO,EAAE,cAAc,EAAE,MAAM,kBAAkB,CAAC;AAG3D,cAAc;AACd,MAAM,WAAW,uBAAuB,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,KAAK,GAAG,GAAG,CAAE,SAAQ,cAAc,CAAC,CAAC,EAAE,KAAK,CAAC;IAC5G,gBAAgB,CAAC,EAAE,OAAO,GAAG,OAAO,CAAC;IACrC,sBAAsB,CAAC,EAAE,CAAC,KAAK,EAAE,GAAG,KAAK,MAAM,GAAG,MAAM,CAAC;IACzD,gBAAgB,CAAC,EAAE;QAAE,aAAa,CAAC,EAAE,MAAM,CAAC;QAAC,IAAI,CAAC,EAAE,GAAG,CAAC;QAAC,IAAI,CAAC,EAAE,OAAO,CAAA;KAAE,CAAC;IAC1E,gBAAgB,CAAC,EAAE;QAAE,aAAa,CAAC,EAAE,MAAM,CAAC;QAAC,IAAI,CAAC,EAAE,GAAG,CAAC;QAAC,IAAI,CAAC,EAAE,OAAO,CAAA;KAAE,CAAC;IAC1E,kBAAkB,CAAC,EAAE,CAAC,OAAO,EAAE,OAAO,CAAC,CAAC,EAAE,KAAK,CAAC,EAAE,KAAK,EAAE,GAAG,EAAE,MAAM,EAAE,MAAM,KAAK,MAAM,CAAC;CAC3F;AAED,cAAc;AACd,wBAAgB,uBAAuB,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,KAAK,GAAG,GAAG,EAAE,OAAO,EAAE,uBAAuB,CAAC,CAAC,EAAE,KAAK,CAAC,8BAExH;AAED,cAAc;AACd,qBAAa,gBAAgB,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,KAAK,GAAG,GAAG;IAExD,QAAQ,EAAE,cAAc,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC;IACpC,QAAQ,EAAE,cAAc,CAAC,CAAC,CAAC,QAAQ,CAAC,GAAG,KAAK,CAAC,CAAC;IAC9C,WAAW,EAAE,+BAA+B,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,CAAC;IAEtE,OAAO,CAAC,UAAU,CAAK;IACvB,OAAO,CAAC,SAAS,CAAS;IAC1B,OAAO,CAAC,aAAa,CAAK;IAC1B,OAAO,CAAC,QAAQ,CAAoB;IACpC,OAAO,CAAC,QAAQ,CAAyC;gBAE7C,OAAO,EAAE,uBAAuB,CAAC,CAAC,EAAE,KAAK,CAAC;IAqCtD,OAAO,CAAC,6BAA6B;IAMrC,OAAO,CAAC,WAAW;IAenB,OAAO,CAAC,QAAQ;CAKnB","file":"builder.d.ts","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/builder.js b/igv_component/node_modules/apache-arrow/io/whatwg/builder.js
new file mode 100644
index 0000000000000000000000000000000000000000..2d28baab7a010284df1db4831db77f5c1c8add82
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/builder.js
@@ -0,0 +1,88 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.BuilderTransform = exports.builderThroughDOMStream = void 0;
+const tslib_1 = require("tslib");
+const factories_js_1 = require("../../factories.js");
+/** @ignore */
+function builderThroughDOMStream(options) {
+    return new BuilderTransform(options);
+}
+exports.builderThroughDOMStream = builderThroughDOMStream;
+/** @ignore */
+class BuilderTransform {
+    constructor(options) {
+        // Access properties by string indexers to defeat closure compiler
+        this._numChunks = 0;
+        this._finished = false;
+        this._bufferedSize = 0;
+        const { ['readableStrategy']: readableStrategy, ['writableStrategy']: writableStrategy, ['queueingStrategy']: queueingStrategy = 'count' } = options, builderOptions = tslib_1.__rest(options, ['readableStrategy', 'writableStrategy', 'queueingStrategy']);
+        this._controller = null;
+        this._builder = (0, factories_js_1.makeBuilder)(builderOptions);
+        this._getSize = queueingStrategy !== 'bytes' ? chunkLength : chunkByteLength;
+        const { ['highWaterMark']: readableHighWaterMark = queueingStrategy === 'bytes' ? Math.pow(2, 14) : 1000 } = Object.assign({}, readableStrategy);
+        const { ['highWaterMark']: writableHighWaterMark = queueingStrategy === 'bytes' ? Math.pow(2, 14) : 1000 } = Object.assign({}, writableStrategy);
+        this['readable'] = new ReadableStream({
+            ['cancel']: () => { this._builder.clear(); },
+            ['pull']: (c) => { this._maybeFlush(this._builder, this._controller = c); },
+            ['start']: (c) => { this._maybeFlush(this._builder, this._controller = c); },
+        }, {
+            'highWaterMark': readableHighWaterMark,
+            'size': queueingStrategy !== 'bytes' ? chunkLength : chunkByteLength,
+        });
+        this['writable'] = new WritableStream({
+            ['abort']: () => { this._builder.clear(); },
+            ['write']: () => { this._maybeFlush(this._builder, this._controller); },
+            ['close']: () => { this._maybeFlush(this._builder.finish(), this._controller); },
+        }, {
+            'highWaterMark': writableHighWaterMark,
+            'size': (value) => this._writeValueAndReturnChunkSize(value),
+        });
+    }
+    _writeValueAndReturnChunkSize(value) {
+        const bufferedSize = this._bufferedSize;
+        this._bufferedSize = this._getSize(this._builder.append(value));
+        return this._bufferedSize - bufferedSize;
+    }
+    _maybeFlush(builder, controller) {
+        if (controller == null) {
+            return;
+        }
+        if (this._bufferedSize >= controller.desiredSize) {
+            ++this._numChunks && this._enqueue(controller, builder.toVector());
+        }
+        if (builder.finished) {
+            if (builder.length > 0 || this._numChunks === 0) {
+                ++this._numChunks && this._enqueue(controller, builder.toVector());
+            }
+            if (!this._finished && (this._finished = true)) {
+                this._enqueue(controller, null);
+            }
+        }
+    }
+    _enqueue(controller, chunk) {
+        this._bufferedSize = 0;
+        this._controller = null;
+        chunk == null ? controller.close() : controller.enqueue(chunk);
+    }
+}
+exports.BuilderTransform = BuilderTransform;
+/** @ignore */ const chunkLength = (chunk) => { var _a; return (_a = chunk === null || chunk === void 0 ? void 0 : chunk.length) !== null && _a !== void 0 ? _a : 0; };
+/** @ignore */ const chunkByteLength = (chunk) => { var _a; return (_a = chunk === null || chunk === void 0 ? void 0 : chunk.byteLength) !== null && _a !== void 0 ? _a : 0; };
+
+//# sourceMappingURL=builder.js.map
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/builder.js.map b/igv_component/node_modules/apache-arrow/io/whatwg/builder.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..89673cde7d75d8c6342f4fb8932105157633c2ab
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/builder.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/whatwg/builder.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;;AAKrB,qDAAiD;AAWjD,cAAc;AACd,SAAgB,uBAAuB,CAAwC,OAA0C;IACrH,OAAO,IAAI,gBAAgB,CAAC,OAAO,CAAC,CAAC;AACzC,CAAC;AAFD,0DAEC;AAED,cAAc;AACd,MAAa,gBAAgB;IAYzB,YAAY,OAA0C;QAElD,kEAAkE;QAR9D,eAAU,GAAG,CAAC,CAAC;QACf,cAAS,GAAG,KAAK,CAAC;QAClB,kBAAa,GAAG,CAAC,CAAC;QAQtB,MAAM,EACF,CAAC,kBAAkB,CAAC,EAAE,gBAAgB,EACtC,CAAC,kBAAkB,CAAC,EAAE,gBAAgB,EACtC,CAAC,kBAAkB,CAAC,EAAE,gBAAgB,GAAG,OAAO,KAEhD,OAAO,EADJ,cAAc,kBACjB,OAAO,EALL,4DAKL,CAAU,CAAC;QAEZ,IAAI,CAAC,WAAW,GAAG,IAAI,CAAC;QACxB,IAAI,CAAC,QAAQ,GAAG,IAAA,0BAAW,EAAW,cAAc,CAAC,CAAC;QACtD,IAAI,CAAC,QAAQ,GAAG,gBAAgB,KAAK,OAAO,CAAC,CAAC,CAAC,WAAW,CAAC,CAAC,CAAC,eAAe,CAAC;QAE7E,MAAM,EAAE,CAAC,eAAe,CAAC,EAAE,qBAAqB,GAAG,gBAAgB,KAAK,OAAO,CAAC,CAAC,CAAC,SAAA,CAAC,EAAI,EAAE,CAAA,CAAC,CAAC,CAAC,IAAI,EAAE,qBAAQ,gBAAgB,CAAE,CAAC;QAC7H,MAAM,EAAE,CAAC,eAAe,CAAC,EAAE,qBAAqB,GAAG,gBAAgB,KAAK,OAAO,CAAC,CAAC,CAAC,SAAA,CAAC,EAAI,EAAE,CAAA,CAAC,CAAC,CAAC,IAAI,EAAE,qBAAQ,gBAAgB,CAAE,CAAC;QAE7H,IAAI,CAAC,UAAU,CAAC,GAAG,IAAI,cAAc,CAAY;YAC7C,CAAC,QAAQ,CAAC,EAAE,GAAG,EAAE,GAAG,IAAI,CAAC,QAAQ,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;YAC5C,CAAC,MAAM,CAAC,EAAE,CAAC,CAAC,EAAE,EAAE,GAAG,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,QAAQ,EAAE,IAAI,CAAC,WAAW,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC;YAC3E,CAAC,OAAO,CAAC,EAAE,CAAC,CAAC,EAAE,EAAE,GAAG,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,QAAQ,EAAE,IAAI,CAAC,WAAW,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC;SAC/E,EAAE;YACC,eAAe,EAAE,qBAAqB;YACtC,MAAM,EAAE,gBAAgB,KAAK,OAAO,CAAC,CAAC,CAAC,WAAW,CAAC,CAAC,CAAC,eAAe;SACvE,CAAC,CAAC;QAEH,IAAI,CAAC,UAAU,CAAC,GAAG,IAAI,cAAc,CAAC;YAClC,CAAC,OAAO,CAAC,EAAE,GAAG,EAAE,GAAG,IAAI,CAAC,QAAQ,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;YAC3C,CAAC,OAAO,CAAC,EAAE,GAAG,EAAE,GAAG,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,QAAQ,EAAE,IAAI,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;YACvE,CAAC,OAAO,CAAC,EAAE,GAAG,EAAE,GAAG,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,QAAQ,CAAC,MAAM,EAAE,EAAE,IAAI,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;SACnF,EAAE;YACC,eAAe,EAAE,qBAAqB;YACtC,MAAM,EAAE,CAAC,KAA0B,EAAE,EAAE,CAAC,IAAI,CAAC,6BAA6B,CAAC,KAAK,CAAC;SACpF,CAAC,CAAC;IACP,CAAC;IAEO,6BAA6B,CAAC,KAA0B;QAC5D,MAAM,YAAY,GAAG,IAAI,CAAC,aAAa,CAAC;QACxC,IAAI,CAAC,aAAa,GAAG,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,QAAQ,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC,CAAC;QAChE,OAAO,IAAI,CAAC,aAAa,GAAG,YAAY,CAAC;IAC7C,CAAC;IAEO,WAAW,CAAC,OAA0B,EAAE,UAA6D;QACzG,IAAI,UAAU,IAAI,IAAI,EAAE;YAAE,OAAO;SAAE;QACnC,IAAI,IAAI,CAAC,aAAa,IAAI,UAAU,CAAC,WAAY,EAAE;YAC/C,EAAE,IAAI,CAAC,UAAU,IAAI,IAAI,CAAC,QAAQ,CAAC,UAAU,EAAE,OAAO,CAAC,QAAQ,EAAE,CAAC,CAAC;SACtE;QACD,IAAI,OAAO,CAAC,QAAQ,EAAE;YAClB,IAAI,OAAO,CAAC,MAAM,GAAG,CAAC,IAAI,IAAI,CAAC,UAAU,KAAK,CAAC,EAAE;gBAC7C,EAAE,IAAI,CAAC,UAAU,IAAI,IAAI,CAAC,QAAQ,CAAC,UAAU,EAAE,OAAO,CAAC,QAAQ,EAAE,CAAC,CAAC;aACtE;YACD,IAAI,CAAC,IAAI,CAAC,SAAS,IAAI,CAAC,IAAI,CAAC,SAAS,GAAG,IAAI,CAAC,EAAE;gBAC5C,IAAI,CAAC,QAAQ,CAAC,UAAU,EAAE,IAAI,CAAC,CAAC;aACnC;SACJ;IACL,CAAC;IAEO,QAAQ,CAAC,UAAsD,EAAE,KAAuB;QAC5F,IAAI,CAAC,aAAa,GAAG,CAAC,CAAC;QACvB,IAAI,CAAC,WAAW,GAAG,IAAI,CAAC;QACxB,KAAK,IAAI,IAAI,CAAC,CAAC,CAAC,UAAU,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC,UAAU,CAAC,OAAO,CAAC,KAAK,CAAC,CAAC;IACnE,CAAC;CACJ;AA3ED,4CA2EC;AAED,cAAc,CAAC,MAAM,WAAW,GAAG,CAA2B,KAA8B,EAAE,EAAE,WAAC,OAAA,MAAA,KAAK,aAAL,KAAK,uBAAL,KAAK,CAAE,MAAM,mCAAI,CAAC,CAAA,EAAA,CAAC;AACpH,cAAc,CAAC,MAAM,eAAe,GAAG,CAA2B,KAA8B,EAAE,EAAE,WAAC,OAAA,MAAA,KAAK,aAAL,KAAK,uBAAL,KAAK,CAAE,UAAU,mCAAI,CAAC,CAAA,EAAA,CAAC","file":"builder.js","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/builder.mjs b/igv_component/node_modules/apache-arrow/io/whatwg/builder.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..77eda2af28533434c13ce41c7fd5fc81bbb2938a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/builder.mjs
@@ -0,0 +1,83 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { __rest } from "tslib";
+import { makeBuilder } from '../../factories.mjs';
+/** @ignore */
+export function builderThroughDOMStream(options) {
+    return new BuilderTransform(options);
+}
+/** @ignore */
+export class BuilderTransform {
+    constructor(options) {
+        // Access properties by string indexers to defeat closure compiler
+        this._numChunks = 0;
+        this._finished = false;
+        this._bufferedSize = 0;
+        const { ['readableStrategy']: readableStrategy, ['writableStrategy']: writableStrategy, ['queueingStrategy']: queueingStrategy = 'count' } = options, builderOptions = __rest(options, ['readableStrategy', 'writableStrategy', 'queueingStrategy']);
+        this._controller = null;
+        this._builder = makeBuilder(builderOptions);
+        this._getSize = queueingStrategy !== 'bytes' ? chunkLength : chunkByteLength;
+        const { ['highWaterMark']: readableHighWaterMark = queueingStrategy === 'bytes' ? Math.pow(2, 14) : 1000 } = Object.assign({}, readableStrategy);
+        const { ['highWaterMark']: writableHighWaterMark = queueingStrategy === 'bytes' ? Math.pow(2, 14) : 1000 } = Object.assign({}, writableStrategy);
+        this['readable'] = new ReadableStream({
+            ['cancel']: () => { this._builder.clear(); },
+            ['pull']: (c) => { this._maybeFlush(this._builder, this._controller = c); },
+            ['start']: (c) => { this._maybeFlush(this._builder, this._controller = c); },
+        }, {
+            'highWaterMark': readableHighWaterMark,
+            'size': queueingStrategy !== 'bytes' ? chunkLength : chunkByteLength,
+        });
+        this['writable'] = new WritableStream({
+            ['abort']: () => { this._builder.clear(); },
+            ['write']: () => { this._maybeFlush(this._builder, this._controller); },
+            ['close']: () => { this._maybeFlush(this._builder.finish(), this._controller); },
+        }, {
+            'highWaterMark': writableHighWaterMark,
+            'size': (value) => this._writeValueAndReturnChunkSize(value),
+        });
+    }
+    _writeValueAndReturnChunkSize(value) {
+        const bufferedSize = this._bufferedSize;
+        this._bufferedSize = this._getSize(this._builder.append(value));
+        return this._bufferedSize - bufferedSize;
+    }
+    _maybeFlush(builder, controller) {
+        if (controller == null) {
+            return;
+        }
+        if (this._bufferedSize >= controller.desiredSize) {
+            ++this._numChunks && this._enqueue(controller, builder.toVector());
+        }
+        if (builder.finished) {
+            if (builder.length > 0 || this._numChunks === 0) {
+                ++this._numChunks && this._enqueue(controller, builder.toVector());
+            }
+            if (!this._finished && (this._finished = true)) {
+                this._enqueue(controller, null);
+            }
+        }
+    }
+    _enqueue(controller, chunk) {
+        this._bufferedSize = 0;
+        this._controller = null;
+        chunk == null ? controller.close() : controller.enqueue(chunk);
+    }
+}
+/** @ignore */ const chunkLength = (chunk) => { var _a; return (_a = chunk === null || chunk === void 0 ? void 0 : chunk.length) !== null && _a !== void 0 ? _a : 0; };
+/** @ignore */ const chunkByteLength = (chunk) => { var _a; return (_a = chunk === null || chunk === void 0 ? void 0 : chunk.byteLength) !== null && _a !== void 0 ? _a : 0; };
+
+//# sourceMappingURL=builder.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/builder.mjs.map b/igv_component/node_modules/apache-arrow/io/whatwg/builder.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..fa7bc539199db4d3f8636840fbfa135baba392d3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/builder.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/whatwg/builder.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;AAKrB,OAAO,EAAE,WAAW,EAAE,MAAM,oBAAoB,CAAC;AAWjD,cAAc;AACd,MAAM,UAAU,uBAAuB,CAAwC,OAA0C;IACrH,OAAO,IAAI,gBAAgB,CAAC,OAAO,CAAC,CAAC;AACzC,CAAC;AAED,cAAc;AACd,MAAM,OAAO,gBAAgB;IAYzB,YAAY,OAA0C;QAElD,kEAAkE;QAR9D,eAAU,GAAG,CAAC,CAAC;QACf,cAAS,GAAG,KAAK,CAAC;QAClB,kBAAa,GAAG,CAAC,CAAC;QAQtB,MAAM,EACF,CAAC,kBAAkB,CAAC,EAAE,gBAAgB,EACtC,CAAC,kBAAkB,CAAC,EAAE,gBAAgB,EACtC,CAAC,kBAAkB,CAAC,EAAE,gBAAgB,GAAG,OAAO,KAEhD,OAAO,EADJ,cAAc,UACjB,OAAO,EALL,4DAKL,CAAU,CAAC;QAEZ,IAAI,CAAC,WAAW,GAAG,IAAI,CAAC;QACxB,IAAI,CAAC,QAAQ,GAAG,WAAW,CAAW,cAAc,CAAC,CAAC;QACtD,IAAI,CAAC,QAAQ,GAAG,gBAAgB,KAAK,OAAO,CAAC,CAAC,CAAC,WAAW,CAAC,CAAC,CAAC,eAAe,CAAC;QAE7E,MAAM,EAAE,CAAC,eAAe,CAAC,EAAE,qBAAqB,GAAG,gBAAgB,KAAK,OAAO,CAAC,CAAC,CAAC,SAAA,CAAC,EAAI,EAAE,CAAA,CAAC,CAAC,CAAC,IAAI,EAAE,qBAAQ,gBAAgB,CAAE,CAAC;QAC7H,MAAM,EAAE,CAAC,eAAe,CAAC,EAAE,qBAAqB,GAAG,gBAAgB,KAAK,OAAO,CAAC,CAAC,CAAC,SAAA,CAAC,EAAI,EAAE,CAAA,CAAC,CAAC,CAAC,IAAI,EAAE,qBAAQ,gBAAgB,CAAE,CAAC;QAE7H,IAAI,CAAC,UAAU,CAAC,GAAG,IAAI,cAAc,CAAY;YAC7C,CAAC,QAAQ,CAAC,EAAE,GAAG,EAAE,GAAG,IAAI,CAAC,QAAQ,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;YAC5C,CAAC,MAAM,CAAC,EAAE,CAAC,CAAC,EAAE,EAAE,GAAG,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,QAAQ,EAAE,IAAI,CAAC,WAAW,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC;YAC3E,CAAC,OAAO,CAAC,EAAE,CAAC,CAAC,EAAE,EAAE,GAAG,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,QAAQ,EAAE,IAAI,CAAC,WAAW,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC;SAC/E,EAAE;YACC,eAAe,EAAE,qBAAqB;YACtC,MAAM,EAAE,gBAAgB,KAAK,OAAO,CAAC,CAAC,CAAC,WAAW,CAAC,CAAC,CAAC,eAAe;SACvE,CAAC,CAAC;QAEH,IAAI,CAAC,UAAU,CAAC,GAAG,IAAI,cAAc,CAAC;YAClC,CAAC,OAAO,CAAC,EAAE,GAAG,EAAE,GAAG,IAAI,CAAC,QAAQ,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;YAC3C,CAAC,OAAO,CAAC,EAAE,GAAG,EAAE,GAAG,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,QAAQ,EAAE,IAAI,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;YACvE,CAAC,OAAO,CAAC,EAAE,GAAG,EAAE,GAAG,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,QAAQ,CAAC,MAAM,EAAE,EAAE,IAAI,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;SACnF,EAAE;YACC,eAAe,EAAE,qBAAqB;YACtC,MAAM,EAAE,CAAC,KAA0B,EAAE,EAAE,CAAC,IAAI,CAAC,6BAA6B,CAAC,KAAK,CAAC;SACpF,CAAC,CAAC;IACP,CAAC;IAEO,6BAA6B,CAAC,KAA0B;QAC5D,MAAM,YAAY,GAAG,IAAI,CAAC,aAAa,CAAC;QACxC,IAAI,CAAC,aAAa,GAAG,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,QAAQ,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC,CAAC;QAChE,OAAO,IAAI,CAAC,aAAa,GAAG,YAAY,CAAC;IAC7C,CAAC;IAEO,WAAW,CAAC,OAA0B,EAAE,UAA6D;QACzG,IAAI,UAAU,IAAI,IAAI,EAAE;YAAE,OAAO;SAAE;QACnC,IAAI,IAAI,CAAC,aAAa,IAAI,UAAU,CAAC,WAAY,EAAE;YAC/C,EAAE,IAAI,CAAC,UAAU,IAAI,IAAI,CAAC,QAAQ,CAAC,UAAU,EAAE,OAAO,CAAC,QAAQ,EAAE,CAAC,CAAC;SACtE;QACD,IAAI,OAAO,CAAC,QAAQ,EAAE;YAClB,IAAI,OAAO,CAAC,MAAM,GAAG,CAAC,IAAI,IAAI,CAAC,UAAU,KAAK,CAAC,EAAE;gBAC7C,EAAE,IAAI,CAAC,UAAU,IAAI,IAAI,CAAC,QAAQ,CAAC,UAAU,EAAE,OAAO,CAAC,QAAQ,EAAE,CAAC,CAAC;aACtE;YACD,IAAI,CAAC,IAAI,CAAC,SAAS,IAAI,CAAC,IAAI,CAAC,SAAS,GAAG,IAAI,CAAC,EAAE;gBAC5C,IAAI,CAAC,QAAQ,CAAC,UAAU,EAAE,IAAI,CAAC,CAAC;aACnC;SACJ;IACL,CAAC;IAEO,QAAQ,CAAC,UAAsD,EAAE,KAAuB;QAC5F,IAAI,CAAC,aAAa,GAAG,CAAC,CAAC;QACvB,IAAI,CAAC,WAAW,GAAG,IAAI,CAAC;QACxB,KAAK,IAAI,IAAI,CAAC,CAAC,CAAC,UAAU,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC,UAAU,CAAC,OAAO,CAAC,KAAK,CAAC,CAAC;IACnE,CAAC;CACJ;AAED,cAAc,CAAC,MAAM,WAAW,GAAG,CAA2B,KAA8B,EAAE,EAAE,WAAC,OAAA,MAAA,KAAK,aAAL,KAAK,uBAAL,KAAK,CAAE,MAAM,mCAAI,CAAC,CAAA,EAAA,CAAC;AACpH,cAAc,CAAC,MAAM,eAAe,GAAG,CAA2B,KAA8B,EAAE,EAAE,WAAC,OAAA,MAAA,KAAK,aAAL,KAAK,uBAAL,KAAK,CAAE,UAAU,mCAAI,CAAC,CAAA,EAAA,CAAC","file":"builder.js","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/iterable.d.ts b/igv_component/node_modules/apache-arrow/io/whatwg/iterable.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..cb3879532e175193f74bd4ee6db39e306e6d36bd
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/iterable.d.ts
@@ -0,0 +1,3 @@
+import { ReadableDOMStreamOptions } from '../../io/interfaces.js';
+/** @ignore */
+export declare function toDOMStream<T>(source: Iterable<T> | AsyncIterable<T>, options?: ReadableDOMStreamOptions): ReadableStream<T>;
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/iterable.d.ts.map b/igv_component/node_modules/apache-arrow/io/whatwg/iterable.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..bee0f8f8ddde0e4fa37ffc7a18633e3cc3a9e278
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/iterable.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/whatwg/iterable.ts"],"names":[],"mappings":"AAkBA,OAAO,EAAE,wBAAwB,EAAE,MAAM,wBAAwB,CAAC;AAQlE,cAAc;AACd,wBAAgB,WAAW,CAAC,CAAC,EAAE,MAAM,EAAE,QAAQ,CAAC,CAAC,CAAC,GAAG,aAAa,CAAC,CAAC,CAAC,EAAE,OAAO,CAAC,EAAE,wBAAwB,GAAG,cAAc,CAAC,CAAC,CAAC,CAK5H","file":"iterable.d.ts","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/iterable.js b/igv_component/node_modules/apache-arrow/io/whatwg/iterable.js
new file mode 100644
index 0000000000000000000000000000000000000000..dfeb866b4b62ff9dfaf7fc6f58993594f31e2f05
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/iterable.js
@@ -0,0 +1,94 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.toDOMStream = void 0;
+const tslib_1 = require("tslib");
+const buffer_js_1 = require("../../util/buffer.js");
+const compat_js_1 = require("../../util/compat.js");
+/** @ignore */
+function toDOMStream(source, options) {
+    if ((0, compat_js_1.isAsyncIterable)(source)) {
+        return asyncIterableAsReadableDOMStream(source, options);
+    }
+    if ((0, compat_js_1.isIterable)(source)) {
+        return iterableAsReadableDOMStream(source, options);
+    }
+    /* istanbul ignore next */
+    throw new Error(`toDOMStream() must be called with an Iterable or AsyncIterable`);
+}
+exports.toDOMStream = toDOMStream;
+/** @ignore */
+function iterableAsReadableDOMStream(source, options) {
+    let it = null;
+    const bm = ((options === null || options === void 0 ? void 0 : options.type) === 'bytes') || false;
+    const hwm = (options === null || options === void 0 ? void 0 : options.highWaterMark) || (Math.pow(2, 24));
+    return new ReadableStream(Object.assign(Object.assign({}, options), { start(controller) { next(controller, it || (it = source[Symbol.iterator]())); },
+        pull(controller) { it ? (next(controller, it)) : controller.close(); },
+        cancel() { ((it === null || it === void 0 ? void 0 : it.return) && it.return() || true) && (it = null); } }), Object.assign({ highWaterMark: bm ? hwm : undefined }, options));
+    function next(controller, it) {
+        let buf;
+        let r = null;
+        let size = controller.desiredSize || null;
+        while (!(r = it.next(bm ? size : null)).done) {
+            if (ArrayBuffer.isView(r.value) && (buf = (0, buffer_js_1.toUint8Array)(r.value))) {
+                size != null && bm && (size = size - buf.byteLength + 1);
+                r.value = buf;
+            }
+            controller.enqueue(r.value);
+            if (size != null && --size <= 0) {
+                return;
+            }
+        }
+        controller.close();
+    }
+}
+/** @ignore */
+function asyncIterableAsReadableDOMStream(source, options) {
+    let it = null;
+    const bm = ((options === null || options === void 0 ? void 0 : options.type) === 'bytes') || false;
+    const hwm = (options === null || options === void 0 ? void 0 : options.highWaterMark) || (Math.pow(2, 24));
+    return new ReadableStream(Object.assign(Object.assign({}, options), { start(controller) {
+            return tslib_1.__awaiter(this, void 0, void 0, function* () { yield next(controller, it || (it = source[Symbol.asyncIterator]())); });
+        },
+        pull(controller) {
+            return tslib_1.__awaiter(this, void 0, void 0, function* () { it ? (yield next(controller, it)) : controller.close(); });
+        },
+        cancel() {
+            return tslib_1.__awaiter(this, void 0, void 0, function* () { ((it === null || it === void 0 ? void 0 : it.return) && (yield it.return()) || true) && (it = null); });
+        } }), Object.assign({ highWaterMark: bm ? hwm : undefined }, options));
+    function next(controller, it) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            let buf;
+            let r = null;
+            let size = controller.desiredSize || null;
+            while (!(r = yield it.next(bm ? size : null)).done) {
+                if (ArrayBuffer.isView(r.value) && (buf = (0, buffer_js_1.toUint8Array)(r.value))) {
+                    size != null && bm && (size = size - buf.byteLength + 1);
+                    r.value = buf;
+                }
+                controller.enqueue(r.value);
+                if (size != null && --size <= 0) {
+                    return;
+                }
+            }
+            controller.close();
+        });
+    }
+}
+
+//# sourceMappingURL=iterable.js.map
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/iterable.js.map b/igv_component/node_modules/apache-arrow/io/whatwg/iterable.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..73f3aea2b43e9b0b2e2dcc0dd1dd46844b2707ec
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/iterable.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/whatwg/iterable.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;;AAErB,oDAAoD;AAEpD,oDAAmE;AAOnE,cAAc;AACd,SAAgB,WAAW,CAAI,MAAsC,EAAE,OAAkC;IACrG,IAAI,IAAA,2BAAe,EAAI,MAAM,CAAC,EAAE;QAAE,OAAO,gCAAgC,CAAC,MAAM,EAAE,OAAO,CAAC,CAAC;KAAE;IAC7F,IAAI,IAAA,sBAAU,EAAI,MAAM,CAAC,EAAE;QAAE,OAAO,2BAA2B,CAAC,MAAM,EAAE,OAAO,CAAC,CAAC;KAAE;IACnF,0BAA0B;IAC1B,MAAM,IAAI,KAAK,CAAC,gEAAgE,CAAC,CAAC;AACtF,CAAC;AALD,kCAKC;AAED,cAAc;AACd,SAAS,2BAA2B,CAAI,MAAmB,EAAE,OAAkC;IAE3F,IAAI,EAAE,GAA6B,IAAI,CAAC;IACxC,MAAM,EAAE,GAAG,CAAC,CAAA,OAAO,aAAP,OAAO,uBAAP,OAAO,CAAE,IAAI,MAAK,OAAO,CAAC,IAAI,KAAK,CAAC;IAChD,MAAM,GAAG,GAAG,CAAA,OAAO,aAAP,OAAO,uBAAP,OAAO,CAAE,aAAa,KAAI,CAAC,SAAA,CAAC,EAAI,EAAE,CAAA,CAAC,CAAC;IAEhD,OAAO,IAAI,cAAc,iCAClB,OAAc,KACjB,KAAK,CAAC,UAAU,IAAI,IAAI,CAAC,UAAU,EAAE,EAAE,IAAI,CAAC,EAAE,GAAG,MAAM,CAAC,MAAM,CAAC,QAAQ,CAAC,EAAuB,CAAC,CAAC,CAAC,CAAC,CAAC;QACpG,IAAI,CAAC,UAAU,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,UAAU,EAAE,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC,UAAU,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;QACtE,MAAM,KAAK,CAAC,CAAA,EAAE,aAAF,EAAE,uBAAF,EAAE,CAAE,MAAM,KAAI,EAAE,CAAC,MAAM,EAAE,IAAI,IAAI,CAAC,IAAI,CAAC,EAAE,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC,qBAC/D,aAAa,EAAE,EAAE,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,SAAS,IAAK,OAAO,EAAG,CAAC;IAExD,SAAS,IAAI,CAAC,UAA8C,EAAE,EAAqB;QAC/E,IAAI,GAAe,CAAC;QACpB,IAAI,CAAC,GAA6B,IAAI,CAAC;QACvC,IAAI,IAAI,GAAG,UAAU,CAAC,WAAW,IAAI,IAAI,CAAC;QAC1C,OAAO,CAAC,CAAC,CAAC,GAAG,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,EAAE;YAC1C,IAAI,WAAW,CAAC,MAAM,CAAC,CAAC,CAAC,KAAK,CAAC,IAAI,CAAC,GAAG,GAAG,IAAA,wBAAY,EAAC,CAAC,CAAC,KAAK,CAAC,CAAC,EAAE;gBAC9D,IAAI,IAAI,IAAI,IAAI,EAAE,IAAI,CAAC,IAAI,GAAG,IAAI,GAAG,GAAG,CAAC,UAAU,GAAG,CAAC,CAAC,CAAC;gBACzD,CAAC,CAAC,KAAK,GAAQ,GAAG,CAAC;aACtB;YACD,UAAU,CAAC,OAAO,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC;YAC5B,IAAI,IAAI,IAAI,IAAI,IAAI,EAAE,IAAI,IAAI,CAAC,EAAE;gBAAE,OAAO;aAAE;SAC/C;QACD,UAAU,CAAC,KAAK,EAAE,CAAC;IACvB,CAAC;AACL,CAAC;AAED,cAAc;AACd,SAAS,gCAAgC,CAAI,MAAwB,EAAE,OAAkC;IAErG,IAAI,EAAE,GAAkC,IAAI,CAAC;IAC7C,MAAM,EAAE,GAAG,CAAC,CAAA,OAAO,aAAP,OAAO,uBAAP,OAAO,CAAE,IAAI,MAAK,OAAO,CAAC,IAAI,KAAK,CAAC;IAChD,MAAM,GAAG,GAAG,CAAA,OAAO,aAAP,OAAO,uBAAP,OAAO,CAAE,aAAa,KAAI,CAAC,SAAA,CAAC,EAAI,EAAE,CAAA,CAAC,CAAC;IAEhD,OAAO,IAAI,cAAc,iCAClB,OAAc,KACX,KAAK,CAAC,UAAU;0EAAI,MAAM,IAAI,CAAC,UAAU,EAAE,EAAE,IAAI,CAAC,EAAE,GAAG,MAAM,CAAC,MAAM,CAAC,aAAa,CAAC,EAA4B,CAAC,CAAC,CAAC,CAAC,CAAC;SAAA;QACpH,IAAI,CAAC,UAAU;0EAAI,EAAE,CAAC,CAAC,CAAC,CAAC,MAAM,IAAI,CAAC,UAAU,EAAE,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC,UAAU,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;SAAA;QAC5E,MAAM;0EAAK,CAAC,CAAA,EAAE,aAAF,EAAE,uBAAF,EAAE,CAAE,MAAM,MAAI,MAAM,EAAE,CAAC,MAAM,EAAE,CAAA,IAAI,IAAI,CAAC,IAAI,CAAC,EAAE,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC;SAAA,qBAC3E,aAAa,EAAE,EAAE,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,SAAS,IAAK,OAAO,EAAG,CAAC;IAExD,SAAe,IAAI,CAAC,UAA8C,EAAE,EAA0B;;YAC1F,IAAI,GAAe,CAAC;YACpB,IAAI,CAAC,GAA6B,IAAI,CAAC;YACvC,IAAI,IAAI,GAAG,UAAU,CAAC,WAAW,IAAI,IAAI,CAAC;YAC1C,OAAO,CAAC,CAAC,CAAC,GAAG,MAAM,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,EAAE;gBAChD,IAAI,WAAW,CAAC,MAAM,CAAC,CAAC,CAAC,KAAK,CAAC,IAAI,CAAC,GAAG,GAAG,IAAA,wBAAY,EAAC,CAAC,CAAC,KAAK,CAAC,CAAC,EAAE;oBAC9D,IAAI,IAAI,IAAI,IAAI,EAAE,IAAI,CAAC,IAAI,GAAG,IAAI,GAAG,GAAG,CAAC,UAAU,GAAG,CAAC,CAAC,CAAC;oBACzD,CAAC,CAAC,KAAK,GAAQ,GAAG,CAAC;iBACtB;gBACD,UAAU,CAAC,OAAO,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC;gBAC5B,IAAI,IAAI,IAAI,IAAI,IAAI,EAAE,IAAI,IAAI,CAAC,EAAE;oBAAE,OAAO;iBAAE;aAC/C;YACD,UAAU,CAAC,KAAK,EAAE,CAAC;QACvB,CAAC;KAAA;AACL,CAAC","file":"iterable.js","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/iterable.mjs b/igv_component/node_modules/apache-arrow/io/whatwg/iterable.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..39472b76a1ad8a5064d00ff5c40cc3be2192e663
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/iterable.mjs
@@ -0,0 +1,90 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { __awaiter } from "tslib";
+import { toUint8Array } from '../../util/buffer.mjs';
+import { isIterable, isAsyncIterable } from '../../util/compat.mjs';
+/** @ignore */
+export function toDOMStream(source, options) {
+    if (isAsyncIterable(source)) {
+        return asyncIterableAsReadableDOMStream(source, options);
+    }
+    if (isIterable(source)) {
+        return iterableAsReadableDOMStream(source, options);
+    }
+    /* istanbul ignore next */
+    throw new Error(`toDOMStream() must be called with an Iterable or AsyncIterable`);
+}
+/** @ignore */
+function iterableAsReadableDOMStream(source, options) {
+    let it = null;
+    const bm = ((options === null || options === void 0 ? void 0 : options.type) === 'bytes') || false;
+    const hwm = (options === null || options === void 0 ? void 0 : options.highWaterMark) || (Math.pow(2, 24));
+    return new ReadableStream(Object.assign(Object.assign({}, options), { start(controller) { next(controller, it || (it = source[Symbol.iterator]())); },
+        pull(controller) { it ? (next(controller, it)) : controller.close(); },
+        cancel() { ((it === null || it === void 0 ? void 0 : it.return) && it.return() || true) && (it = null); } }), Object.assign({ highWaterMark: bm ? hwm : undefined }, options));
+    function next(controller, it) {
+        let buf;
+        let r = null;
+        let size = controller.desiredSize || null;
+        while (!(r = it.next(bm ? size : null)).done) {
+            if (ArrayBuffer.isView(r.value) && (buf = toUint8Array(r.value))) {
+                size != null && bm && (size = size - buf.byteLength + 1);
+                r.value = buf;
+            }
+            controller.enqueue(r.value);
+            if (size != null && --size <= 0) {
+                return;
+            }
+        }
+        controller.close();
+    }
+}
+/** @ignore */
+function asyncIterableAsReadableDOMStream(source, options) {
+    let it = null;
+    const bm = ((options === null || options === void 0 ? void 0 : options.type) === 'bytes') || false;
+    const hwm = (options === null || options === void 0 ? void 0 : options.highWaterMark) || (Math.pow(2, 24));
+    return new ReadableStream(Object.assign(Object.assign({}, options), { start(controller) {
+            return __awaiter(this, void 0, void 0, function* () { yield next(controller, it || (it = source[Symbol.asyncIterator]())); });
+        },
+        pull(controller) {
+            return __awaiter(this, void 0, void 0, function* () { it ? (yield next(controller, it)) : controller.close(); });
+        },
+        cancel() {
+            return __awaiter(this, void 0, void 0, function* () { ((it === null || it === void 0 ? void 0 : it.return) && (yield it.return()) || true) && (it = null); });
+        } }), Object.assign({ highWaterMark: bm ? hwm : undefined }, options));
+    function next(controller, it) {
+        return __awaiter(this, void 0, void 0, function* () {
+            let buf;
+            let r = null;
+            let size = controller.desiredSize || null;
+            while (!(r = yield it.next(bm ? size : null)).done) {
+                if (ArrayBuffer.isView(r.value) && (buf = toUint8Array(r.value))) {
+                    size != null && bm && (size = size - buf.byteLength + 1);
+                    r.value = buf;
+                }
+                controller.enqueue(r.value);
+                if (size != null && --size <= 0) {
+                    return;
+                }
+            }
+            controller.close();
+        });
+    }
+}
+
+//# sourceMappingURL=iterable.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/iterable.mjs.map b/igv_component/node_modules/apache-arrow/io/whatwg/iterable.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..4e4f5df76194aa980bcba5e09c939f9dae4713e8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/iterable.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/whatwg/iterable.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;AAErB,OAAO,EAAE,YAAY,EAAE,MAAM,sBAAsB,CAAC;AAEpD,OAAO,EAAE,UAAU,EAAE,eAAe,EAAE,MAAM,sBAAsB,CAAC;AAOnE,cAAc;AACd,MAAM,UAAU,WAAW,CAAI,MAAsC,EAAE,OAAkC;IACrG,IAAI,eAAe,CAAI,MAAM,CAAC,EAAE;QAAE,OAAO,gCAAgC,CAAC,MAAM,EAAE,OAAO,CAAC,CAAC;KAAE;IAC7F,IAAI,UAAU,CAAI,MAAM,CAAC,EAAE;QAAE,OAAO,2BAA2B,CAAC,MAAM,EAAE,OAAO,CAAC,CAAC;KAAE;IACnF,0BAA0B;IAC1B,MAAM,IAAI,KAAK,CAAC,gEAAgE,CAAC,CAAC;AACtF,CAAC;AAED,cAAc;AACd,SAAS,2BAA2B,CAAI,MAAmB,EAAE,OAAkC;IAE3F,IAAI,EAAE,GAA6B,IAAI,CAAC;IACxC,MAAM,EAAE,GAAG,CAAC,CAAA,OAAO,aAAP,OAAO,uBAAP,OAAO,CAAE,IAAI,MAAK,OAAO,CAAC,IAAI,KAAK,CAAC;IAChD,MAAM,GAAG,GAAG,CAAA,OAAO,aAAP,OAAO,uBAAP,OAAO,CAAE,aAAa,KAAI,CAAC,SAAA,CAAC,EAAI,EAAE,CAAA,CAAC,CAAC;IAEhD,OAAO,IAAI,cAAc,iCAClB,OAAc,KACjB,KAAK,CAAC,UAAU,IAAI,IAAI,CAAC,UAAU,EAAE,EAAE,IAAI,CAAC,EAAE,GAAG,MAAM,CAAC,MAAM,CAAC,QAAQ,CAAC,EAAuB,CAAC,CAAC,CAAC,CAAC,CAAC;QACpG,IAAI,CAAC,UAAU,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,UAAU,EAAE,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC,UAAU,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;QACtE,MAAM,KAAK,CAAC,CAAA,EAAE,aAAF,EAAE,uBAAF,EAAE,CAAE,MAAM,KAAI,EAAE,CAAC,MAAM,EAAE,IAAI,IAAI,CAAC,IAAI,CAAC,EAAE,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC,qBAC/D,aAAa,EAAE,EAAE,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,SAAS,IAAK,OAAO,EAAG,CAAC;IAExD,SAAS,IAAI,CAAC,UAA8C,EAAE,EAAqB;QAC/E,IAAI,GAAe,CAAC;QACpB,IAAI,CAAC,GAA6B,IAAI,CAAC;QACvC,IAAI,IAAI,GAAG,UAAU,CAAC,WAAW,IAAI,IAAI,CAAC;QAC1C,OAAO,CAAC,CAAC,CAAC,GAAG,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,EAAE;YAC1C,IAAI,WAAW,CAAC,MAAM,CAAC,CAAC,CAAC,KAAK,CAAC,IAAI,CAAC,GAAG,GAAG,YAAY,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,EAAE;gBAC9D,IAAI,IAAI,IAAI,IAAI,EAAE,IAAI,CAAC,IAAI,GAAG,IAAI,GAAG,GAAG,CAAC,UAAU,GAAG,CAAC,CAAC,CAAC;gBACzD,CAAC,CAAC,KAAK,GAAQ,GAAG,CAAC;aACtB;YACD,UAAU,CAAC,OAAO,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC;YAC5B,IAAI,IAAI,IAAI,IAAI,IAAI,EAAE,IAAI,IAAI,CAAC,EAAE;gBAAE,OAAO;aAAE;SAC/C;QACD,UAAU,CAAC,KAAK,EAAE,CAAC;IACvB,CAAC;AACL,CAAC;AAED,cAAc;AACd,SAAS,gCAAgC,CAAI,MAAwB,EAAE,OAAkC;IAErG,IAAI,EAAE,GAAkC,IAAI,CAAC;IAC7C,MAAM,EAAE,GAAG,CAAC,CAAA,OAAO,aAAP,OAAO,uBAAP,OAAO,CAAE,IAAI,MAAK,OAAO,CAAC,IAAI,KAAK,CAAC;IAChD,MAAM,GAAG,GAAG,CAAA,OAAO,aAAP,OAAO,uBAAP,OAAO,CAAE,aAAa,KAAI,CAAC,SAAA,CAAC,EAAI,EAAE,CAAA,CAAC,CAAC;IAEhD,OAAO,IAAI,cAAc,iCAClB,OAAc,KACX,KAAK,CAAC,UAAU;kEAAI,MAAM,IAAI,CAAC,UAAU,EAAE,EAAE,IAAI,CAAC,EAAE,GAAG,MAAM,CAAC,MAAM,CAAC,aAAa,CAAC,EAA4B,CAAC,CAAC,CAAC,CAAC,CAAC;SAAA;QACpH,IAAI,CAAC,UAAU;kEAAI,EAAE,CAAC,CAAC,CAAC,CAAC,MAAM,IAAI,CAAC,UAAU,EAAE,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC,UAAU,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;SAAA;QAC5E,MAAM;kEAAK,CAAC,CAAA,EAAE,aAAF,EAAE,uBAAF,EAAE,CAAE,MAAM,MAAI,MAAM,EAAE,CAAC,MAAM,EAAE,CAAA,IAAI,IAAI,CAAC,IAAI,CAAC,EAAE,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC;SAAA,qBAC3E,aAAa,EAAE,EAAE,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,SAAS,IAAK,OAAO,EAAG,CAAC;IAExD,SAAe,IAAI,CAAC,UAA8C,EAAE,EAA0B;;YAC1F,IAAI,GAAe,CAAC;YACpB,IAAI,CAAC,GAA6B,IAAI,CAAC;YACvC,IAAI,IAAI,GAAG,UAAU,CAAC,WAAW,IAAI,IAAI,CAAC;YAC1C,OAAO,CAAC,CAAC,CAAC,GAAG,MAAM,EAAE,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,EAAE;gBAChD,IAAI,WAAW,CAAC,MAAM,CAAC,CAAC,CAAC,KAAK,CAAC,IAAI,CAAC,GAAG,GAAG,YAAY,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,EAAE;oBAC9D,IAAI,IAAI,IAAI,IAAI,EAAE,IAAI,CAAC,IAAI,GAAG,IAAI,GAAG,GAAG,CAAC,UAAU,GAAG,CAAC,CAAC,CAAC;oBACzD,CAAC,CAAC,KAAK,GAAQ,GAAG,CAAC;iBACtB;gBACD,UAAU,CAAC,OAAO,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC;gBAC5B,IAAI,IAAI,IAAI,IAAI,IAAI,EAAE,IAAI,IAAI,CAAC,EAAE;oBAAE,OAAO;iBAAE;aAC/C;YACD,UAAU,CAAC,KAAK,EAAE,CAAC;QACvB,CAAC;KAAA;AACL,CAAC","file":"iterable.js","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/reader.d.ts b/igv_component/node_modules/apache-arrow/io/whatwg/reader.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..9f560be8baa9b7b6b15c43eeac69db71a5cdfd9c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/reader.d.ts
@@ -0,0 +1,9 @@
+import { TypeMap } from '../../type.js';
+import { RecordBatch } from '../../recordbatch.js';
+/** @ignore */
+export declare function recordBatchReaderThroughDOMStream<T extends TypeMap = any>(writableStrategy?: ByteLengthQueuingStrategy, readableStrategy?: {
+    autoDestroy: boolean;
+}): {
+    writable: WritableStream<ArrayBufferView>;
+    readable: ReadableStream<RecordBatch<T>>;
+};
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/reader.d.ts.map b/igv_component/node_modules/apache-arrow/io/whatwg/reader.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..6ae13b8eef9821ac0afba3c159d6772d7c6e483a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/reader.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/whatwg/reader.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AACxC,OAAO,EAAE,WAAW,EAAE,MAAM,sBAAsB,CAAC;AAInD,cAAc;AACd,wBAAgB,iCAAiC,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,EAAE,gBAAgB,CAAC,EAAE,yBAAyB,EAAE,gBAAgB,CAAC,EAAE;IAAE,WAAW,EAAE,OAAO,CAAA;CAAE;;;EA4BnK","file":"reader.d.ts","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/reader.js b/igv_component/node_modules/apache-arrow/io/whatwg/reader.js
new file mode 100644
index 0000000000000000000000000000000000000000..65b54133f27850cfcd4145c0b68afd0fe472e3a8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/reader.js
@@ -0,0 +1,60 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.recordBatchReaderThroughDOMStream = void 0;
+const tslib_1 = require("tslib");
+const stream_js_1 = require("../../io/stream.js");
+const reader_js_1 = require("../../ipc/reader.js");
+/** @ignore */
+function recordBatchReaderThroughDOMStream(writableStrategy, readableStrategy) {
+    const queue = new stream_js_1.AsyncByteQueue();
+    let reader = null;
+    const readable = new ReadableStream({
+        cancel() {
+            return tslib_1.__awaiter(this, void 0, void 0, function* () { yield queue.close(); });
+        },
+        start(controller) {
+            return tslib_1.__awaiter(this, void 0, void 0, function* () { yield next(controller, reader || (reader = yield open())); });
+        },
+        pull(controller) {
+            return tslib_1.__awaiter(this, void 0, void 0, function* () { reader ? yield next(controller, reader) : controller.close(); });
+        }
+    });
+    return { writable: new WritableStream(queue, Object.assign({ 'highWaterMark': Math.pow(2, 14) }, writableStrategy)), readable };
+    function open() {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            return yield (yield reader_js_1.RecordBatchReader.from(queue)).open(readableStrategy);
+        });
+    }
+    function next(controller, reader) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            let size = controller.desiredSize;
+            let r = null;
+            while (!(r = yield reader.next()).done) {
+                controller.enqueue(r.value);
+                if (size != null && --size <= 0) {
+                    return;
+                }
+            }
+            controller.close();
+        });
+    }
+}
+exports.recordBatchReaderThroughDOMStream = recordBatchReaderThroughDOMStream;
+
+//# sourceMappingURL=reader.js.map
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/reader.js.map b/igv_component/node_modules/apache-arrow/io/whatwg/reader.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..5c4e0d7a9c2ed4589fe58194ada84d0e6635f5b2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/reader.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/whatwg/reader.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;;AAIrB,kDAAoD;AACpD,mDAAwD;AAExD,cAAc;AACd,SAAgB,iCAAiC,CAA0B,gBAA4C,EAAE,gBAA2C;IAEhK,MAAM,KAAK,GAAG,IAAI,0BAAc,EAAE,CAAC;IACnC,IAAI,MAAM,GAAgC,IAAI,CAAC;IAE/C,MAAM,QAAQ,GAAG,IAAI,cAAc,CAAiB;QAC1C,MAAM;0EAAK,MAAM,KAAK,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;SAAA;QACjC,KAAK,CAAC,UAAU;0EAAI,MAAM,IAAI,CAAC,UAAU,EAAE,MAAM,IAAI,CAAC,MAAM,GAAG,MAAM,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC;SAAA;QAChF,IAAI,CAAC,UAAU;0EAAI,MAAM,CAAC,CAAC,CAAC,MAAM,IAAI,CAAC,UAAU,EAAE,MAAM,CAAC,CAAC,CAAC,CAAC,UAAU,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;SAAA;KAC3F,CAAC,CAAC;IAEH,OAAO,EAAE,QAAQ,EAAE,IAAI,cAAc,CAAC,KAAK,kBAAI,eAAe,EAAE,SAAA,CAAC,EAAI,EAAE,CAAA,IAAK,gBAAgB,EAAG,EAAE,QAAQ,EAAE,CAAC;IAE5G,SAAe,IAAI;;YACf,OAAO,MAAM,CAAC,MAAM,6BAAiB,CAAC,IAAI,CAAI,KAAK,CAAC,CAAC,CAAC,IAAI,CAAC,gBAAgB,CAAC,CAAC;QACjF,CAAC;KAAA;IAED,SAAe,IAAI,CAAC,UAA2D,EAAE,MAA4B;;YACzG,IAAI,IAAI,GAAG,UAAU,CAAC,WAAW,CAAC;YAClC,IAAI,CAAC,GAA0C,IAAI,CAAC;YACpD,OAAO,CAAC,CAAC,CAAC,GAAG,MAAM,MAAM,CAAC,IAAI,EAAE,CAAC,CAAC,IAAI,EAAE;gBACpC,UAAU,CAAC,OAAO,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC;gBAC5B,IAAI,IAAI,IAAI,IAAI,IAAI,EAAE,IAAI,IAAI,CAAC,EAAE;oBAC7B,OAAO;iBACV;aACJ;YACD,UAAU,CAAC,KAAK,EAAE,CAAC;QACvB,CAAC;KAAA;AACL,CAAC;AA5BD,8EA4BC","file":"reader.js","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/reader.mjs b/igv_component/node_modules/apache-arrow/io/whatwg/reader.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..c68b9f868b79a1f6dcf3287f47f0040a2a87f6c6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/reader.mjs
@@ -0,0 +1,56 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { __awaiter } from "tslib";
+import { AsyncByteQueue } from '../../io/stream.mjs';
+import { RecordBatchReader } from '../../ipc/reader.mjs';
+/** @ignore */
+export function recordBatchReaderThroughDOMStream(writableStrategy, readableStrategy) {
+    const queue = new AsyncByteQueue();
+    let reader = null;
+    const readable = new ReadableStream({
+        cancel() {
+            return __awaiter(this, void 0, void 0, function* () { yield queue.close(); });
+        },
+        start(controller) {
+            return __awaiter(this, void 0, void 0, function* () { yield next(controller, reader || (reader = yield open())); });
+        },
+        pull(controller) {
+            return __awaiter(this, void 0, void 0, function* () { reader ? yield next(controller, reader) : controller.close(); });
+        }
+    });
+    return { writable: new WritableStream(queue, Object.assign({ 'highWaterMark': Math.pow(2, 14) }, writableStrategy)), readable };
+    function open() {
+        return __awaiter(this, void 0, void 0, function* () {
+            return yield (yield RecordBatchReader.from(queue)).open(readableStrategy);
+        });
+    }
+    function next(controller, reader) {
+        return __awaiter(this, void 0, void 0, function* () {
+            let size = controller.desiredSize;
+            let r = null;
+            while (!(r = yield reader.next()).done) {
+                controller.enqueue(r.value);
+                if (size != null && --size <= 0) {
+                    return;
+                }
+            }
+            controller.close();
+        });
+    }
+}
+
+//# sourceMappingURL=reader.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/reader.mjs.map b/igv_component/node_modules/apache-arrow/io/whatwg/reader.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..494517f79891998295f96d2ed07cd8aa2e0bc078
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/reader.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/whatwg/reader.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;AAIrB,OAAO,EAAE,cAAc,EAAE,MAAM,oBAAoB,CAAC;AACpD,OAAO,EAAE,iBAAiB,EAAE,MAAM,qBAAqB,CAAC;AAExD,cAAc;AACd,MAAM,UAAU,iCAAiC,CAA0B,gBAA4C,EAAE,gBAA2C;IAEhK,MAAM,KAAK,GAAG,IAAI,cAAc,EAAE,CAAC;IACnC,IAAI,MAAM,GAAgC,IAAI,CAAC;IAE/C,MAAM,QAAQ,GAAG,IAAI,cAAc,CAAiB;QAC1C,MAAM;kEAAK,MAAM,KAAK,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;SAAA;QACjC,KAAK,CAAC,UAAU;kEAAI,MAAM,IAAI,CAAC,UAAU,EAAE,MAAM,IAAI,CAAC,MAAM,GAAG,MAAM,IAAI,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC;SAAA;QAChF,IAAI,CAAC,UAAU;kEAAI,MAAM,CAAC,CAAC,CAAC,MAAM,IAAI,CAAC,UAAU,EAAE,MAAM,CAAC,CAAC,CAAC,CAAC,UAAU,CAAC,KAAK,EAAE,CAAC,CAAC,CAAC;SAAA;KAC3F,CAAC,CAAC;IAEH,OAAO,EAAE,QAAQ,EAAE,IAAI,cAAc,CAAC,KAAK,kBAAI,eAAe,EAAE,SAAA,CAAC,EAAI,EAAE,CAAA,IAAK,gBAAgB,EAAG,EAAE,QAAQ,EAAE,CAAC;IAE5G,SAAe,IAAI;;YACf,OAAO,MAAM,CAAC,MAAM,iBAAiB,CAAC,IAAI,CAAI,KAAK,CAAC,CAAC,CAAC,IAAI,CAAC,gBAAgB,CAAC,CAAC;QACjF,CAAC;KAAA;IAED,SAAe,IAAI,CAAC,UAA2D,EAAE,MAA4B;;YACzG,IAAI,IAAI,GAAG,UAAU,CAAC,WAAW,CAAC;YAClC,IAAI,CAAC,GAA0C,IAAI,CAAC;YACpD,OAAO,CAAC,CAAC,CAAC,GAAG,MAAM,MAAM,CAAC,IAAI,EAAE,CAAC,CAAC,IAAI,EAAE;gBACpC,UAAU,CAAC,OAAO,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC;gBAC5B,IAAI,IAAI,IAAI,IAAI,IAAI,EAAE,IAAI,IAAI,CAAC,EAAE;oBAC7B,OAAO;iBACV;aACJ;YACD,UAAU,CAAC,KAAK,EAAE,CAAC;QACvB,CAAC;KAAA;AACL,CAAC","file":"reader.js","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/writer.d.ts b/igv_component/node_modules/apache-arrow/io/whatwg/writer.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..cf679a6b02c43565cb3363ebd6a6b3dee2961c4c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/writer.d.ts
@@ -0,0 +1,13 @@
+import { TypeMap } from '../../type.js';
+import { RecordBatch } from '../../recordbatch.js';
+import { RecordBatchWriter } from '../../ipc/writer.js';
+/** @ignore */
+export declare function recordBatchWriterThroughDOMStream<T extends TypeMap = any>(this: typeof RecordBatchWriter, writableStrategy?: QueuingStrategy<RecordBatch<T>> & {
+    autoDestroy: boolean;
+}, readableStrategy?: {
+    highWaterMark?: number;
+    size?: any;
+}): {
+    writable: WritableStream<RecordBatch<T>>;
+    readable: ReadableStream<any>;
+};
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/writer.d.ts.map b/igv_component/node_modules/apache-arrow/io/whatwg/writer.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..fddaafc66a68092fb01b8b4fc51f900299f8fce0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/writer.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/whatwg/writer.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AACxC,OAAO,EAAE,WAAW,EAAE,MAAM,sBAAsB,CAAC;AAEnD,OAAO,EAAE,iBAAiB,EAAE,MAAM,qBAAqB,CAAC;AAExD,cAAc;AACd,wBAAgB,iCAAiC,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,EACrE,IAAI,EAAE,OAAO,iBAAiB,EAC9B,gBAAgB,CAAC,EAAE,eAAe,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,GAAG;IAAE,WAAW,EAAE,OAAO,CAAA;CAAE,EAC7E,gBAAgB,CAAC,EAAE;IAAE,aAAa,CAAC,EAAE,MAAM,CAAC;IAAC,IAAI,CAAC,EAAE,GAAG,CAAA;CAAE;;;EAuB5D","file":"writer.d.ts","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/writer.js b/igv_component/node_modules/apache-arrow/io/whatwg/writer.js
new file mode 100644
index 0000000000000000000000000000000000000000..208033f1c7e102f35a47617545a96fbc37aa5787
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/writer.js
@@ -0,0 +1,55 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.recordBatchWriterThroughDOMStream = void 0;
+const tslib_1 = require("tslib");
+const stream_js_1 = require("../../io/stream.js");
+/** @ignore */
+function recordBatchWriterThroughDOMStream(writableStrategy, readableStrategy) {
+    const writer = new this(writableStrategy);
+    const reader = new stream_js_1.AsyncByteStream(writer);
+    const readable = new ReadableStream({
+        // type: 'bytes',
+        cancel() {
+            return tslib_1.__awaiter(this, void 0, void 0, function* () { yield reader.cancel(); });
+        },
+        pull(controller) {
+            return tslib_1.__awaiter(this, void 0, void 0, function* () { yield next(controller); });
+        },
+        start(controller) {
+            return tslib_1.__awaiter(this, void 0, void 0, function* () { yield next(controller); });
+        },
+    }, Object.assign({ 'highWaterMark': Math.pow(2, 14) }, readableStrategy));
+    return { writable: new WritableStream(writer, writableStrategy), readable };
+    function next(controller) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            let buf = null;
+            let size = controller.desiredSize;
+            while (buf = yield reader.read(size || null)) {
+                controller.enqueue(buf);
+                if (size != null && (size -= buf.byteLength) <= 0) {
+                    return;
+                }
+            }
+            controller.close();
+        });
+    }
+}
+exports.recordBatchWriterThroughDOMStream = recordBatchWriterThroughDOMStream;
+
+//# sourceMappingURL=writer.js.map
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/writer.js.map b/igv_component/node_modules/apache-arrow/io/whatwg/writer.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..7c03d3162300c1285165f58ad86b3af55af07ff6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/writer.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/whatwg/writer.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;;AAIrB,kDAAqD;AAGrD,cAAc;AACd,SAAgB,iCAAiC,CAE7C,gBAA6E,EAC7E,gBAAyD;IAGzD,MAAM,MAAM,GAAG,IAAI,IAAI,CAAI,gBAAgB,CAAC,CAAC;IAC7C,MAAM,MAAM,GAAG,IAAI,2BAAe,CAAC,MAAM,CAAC,CAAC;IAC3C,MAAM,QAAQ,GAAG,IAAI,cAAc,CAAC;QAChC,iBAAiB;QACX,MAAM;0EAAK,MAAM,MAAM,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;SAAA;QACnC,IAAI,CAAC,UAAU;0EAAI,MAAM,IAAI,CAAC,UAAU,CAAC,CAAC,CAAC,CAAC;SAAA;QAC5C,KAAK,CAAC,UAAU;0EAAI,MAAM,IAAI,CAAC,UAAU,CAAC,CAAC,CAAC,CAAC;SAAA;KACtD,kBAAI,eAAe,EAAE,SAAA,CAAC,EAAI,EAAE,CAAA,IAAK,gBAAgB,EAAG,CAAC;IAEtD,OAAO,EAAE,QAAQ,EAAE,IAAI,cAAc,CAAC,MAAM,EAAE,gBAAgB,CAAC,EAAE,QAAQ,EAAE,CAAC;IAE5E,SAAe,IAAI,CAAC,UAAuD;;YACvE,IAAI,GAAG,GAAsB,IAAI,CAAC;YAClC,IAAI,IAAI,GAAG,UAAU,CAAC,WAAW,CAAC;YAClC,OAAO,GAAG,GAAG,MAAM,MAAM,CAAC,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,EAAE;gBAC1C,UAAU,CAAC,OAAO,CAAC,GAAG,CAAC,CAAC;gBACxB,IAAI,IAAI,IAAI,IAAI,IAAI,CAAC,IAAI,IAAI,GAAG,CAAC,UAAU,CAAC,IAAI,CAAC,EAAE;oBAAE,OAAO;iBAAE;aACjE;YACD,UAAU,CAAC,KAAK,EAAE,CAAC;QACvB,CAAC;KAAA;AACL,CAAC;AA1BD,8EA0BC","file":"writer.js","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/writer.mjs b/igv_component/node_modules/apache-arrow/io/whatwg/writer.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..9aa78d5c880005b6efa892facc5555ca4e921f45
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/writer.mjs
@@ -0,0 +1,51 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { __awaiter } from "tslib";
+import { AsyncByteStream } from '../../io/stream.mjs';
+/** @ignore */
+export function recordBatchWriterThroughDOMStream(writableStrategy, readableStrategy) {
+    const writer = new this(writableStrategy);
+    const reader = new AsyncByteStream(writer);
+    const readable = new ReadableStream({
+        // type: 'bytes',
+        cancel() {
+            return __awaiter(this, void 0, void 0, function* () { yield reader.cancel(); });
+        },
+        pull(controller) {
+            return __awaiter(this, void 0, void 0, function* () { yield next(controller); });
+        },
+        start(controller) {
+            return __awaiter(this, void 0, void 0, function* () { yield next(controller); });
+        },
+    }, Object.assign({ 'highWaterMark': Math.pow(2, 14) }, readableStrategy));
+    return { writable: new WritableStream(writer, writableStrategy), readable };
+    function next(controller) {
+        return __awaiter(this, void 0, void 0, function* () {
+            let buf = null;
+            let size = controller.desiredSize;
+            while (buf = yield reader.read(size || null)) {
+                controller.enqueue(buf);
+                if (size != null && (size -= buf.byteLength) <= 0) {
+                    return;
+                }
+            }
+            controller.close();
+        });
+    }
+}
+
+//# sourceMappingURL=writer.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/io/whatwg/writer.mjs.map b/igv_component/node_modules/apache-arrow/io/whatwg/writer.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..4ae651e1e8402b64abb8fa9c307c28b7b96324f2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/io/whatwg/writer.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["io/whatwg/writer.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;AAIrB,OAAO,EAAE,eAAe,EAAE,MAAM,oBAAoB,CAAC;AAGrD,cAAc;AACd,MAAM,UAAU,iCAAiC,CAE7C,gBAA6E,EAC7E,gBAAyD;IAGzD,MAAM,MAAM,GAAG,IAAI,IAAI,CAAI,gBAAgB,CAAC,CAAC;IAC7C,MAAM,MAAM,GAAG,IAAI,eAAe,CAAC,MAAM,CAAC,CAAC;IAC3C,MAAM,QAAQ,GAAG,IAAI,cAAc,CAAC;QAChC,iBAAiB;QACX,MAAM;kEAAK,MAAM,MAAM,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;SAAA;QACnC,IAAI,CAAC,UAAU;kEAAI,MAAM,IAAI,CAAC,UAAU,CAAC,CAAC,CAAC,CAAC;SAAA;QAC5C,KAAK,CAAC,UAAU;kEAAI,MAAM,IAAI,CAAC,UAAU,CAAC,CAAC,CAAC,CAAC;SAAA;KACtD,kBAAI,eAAe,EAAE,SAAA,CAAC,EAAI,EAAE,CAAA,IAAK,gBAAgB,EAAG,CAAC;IAEtD,OAAO,EAAE,QAAQ,EAAE,IAAI,cAAc,CAAC,MAAM,EAAE,gBAAgB,CAAC,EAAE,QAAQ,EAAE,CAAC;IAE5E,SAAe,IAAI,CAAC,UAAuD;;YACvE,IAAI,GAAG,GAAsB,IAAI,CAAC;YAClC,IAAI,IAAI,GAAG,UAAU,CAAC,WAAW,CAAC;YAClC,OAAO,GAAG,GAAG,MAAM,MAAM,CAAC,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,EAAE;gBAC1C,UAAU,CAAC,OAAO,CAAC,GAAG,CAAC,CAAC;gBACxB,IAAI,IAAI,IAAI,IAAI,IAAI,CAAC,IAAI,IAAI,GAAG,CAAC,UAAU,CAAC,IAAI,CAAC,EAAE;oBAAE,OAAO;iBAAE;aACjE;YACD,UAAU,CAAC,KAAK,EAAE,CAAC;QACvB,CAAC;KAAA;AACL,CAAC","file":"writer.js","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/message.d.ts b/igv_component/node_modules/apache-arrow/ipc/message.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..732a93410134fb1e6b1b50a45aca536faaea994c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/message.d.ts
@@ -0,0 +1,61 @@
+import { MessageHeader } from '../enum.js';
+import { Message } from './metadata/message.js';
+import { ArrayBufferViewInput } from '../util/buffer.js';
+import { ByteStream, ReadableSource, AsyncByteStream } from '../io/stream.js';
+import { ArrowJSON, ArrowJSONLike, FileHandle } from '../io/interfaces.js';
+/** @ignore */
+export declare class MessageReader implements IterableIterator<Message> {
+    protected source: ByteStream;
+    constructor(source: ByteStream | ArrayBufferViewInput | Iterable<ArrayBufferViewInput>);
+    [Symbol.iterator](): IterableIterator<Message>;
+    next(): IteratorResult<Message>;
+    throw(value?: any): any;
+    return(value?: any): any;
+    readMessage<T extends MessageHeader>(type?: T | null): Message<T> | null;
+    readMessageBody(bodyLength: number): Uint8Array;
+    readSchema(throwIfNull?: boolean): import("../schema.js").Schema<any> | undefined;
+    protected readMetadataLength(): IteratorResult<number>;
+    protected readMetadata(metadataLength: number): IteratorResult<Message>;
+}
+/** @ignore */
+export declare class AsyncMessageReader implements AsyncIterableIterator<Message> {
+    protected source: AsyncByteStream;
+    constructor(source: ReadableSource<Uint8Array>);
+    constructor(source: FileHandle, byteLength?: number);
+    [Symbol.asyncIterator](): AsyncIterableIterator<Message>;
+    next(): Promise<IteratorResult<Message>>;
+    throw(value?: any): Promise<any>;
+    return(value?: any): Promise<any>;
+    readMessage<T extends MessageHeader>(type?: T | null): Promise<Message<T> | null>;
+    readMessageBody(bodyLength: number): Promise<Uint8Array>;
+    readSchema(throwIfNull?: boolean): Promise<import("../schema.js").Schema<any> | undefined>;
+    protected readMetadataLength(): Promise<IteratorResult<number>>;
+    protected readMetadata(metadataLength: number): Promise<IteratorResult<Message>>;
+}
+/** @ignore */
+export declare class JSONMessageReader extends MessageReader {
+    private _schema;
+    private _json;
+    private _body;
+    private _batchIndex;
+    private _dictionaryIndex;
+    constructor(source: ArrowJSON | ArrowJSONLike);
+    next(): any;
+    readMessageBody(_bodyLength?: number): any;
+    readMessage<T extends MessageHeader>(type?: T | null): Message<T> | null;
+    readSchema(): import("../schema.js").Schema<any>;
+}
+/** @ignore */
+export declare const PADDING = 4;
+/** @ignore */
+export declare const MAGIC_STR = "ARROW1";
+/** @ignore */
+export declare const MAGIC: Uint8Array;
+/** @ignore */
+export declare function checkForMagicArrowString(buffer: Uint8Array, index?: number): boolean;
+/** @ignore */
+export declare const magicLength: number;
+/** @ignore */
+export declare const magicAndPadding: number;
+/** @ignore */
+export declare const magicX2AndPadding: number;
diff --git a/igv_component/node_modules/apache-arrow/ipc/message.d.ts.map b/igv_component/node_modules/apache-arrow/ipc/message.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..2358ad97173119d6b75c022377fef9efbf5852b1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/message.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["ipc/message.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,aAAa,EAAE,MAAM,YAAY,CAAC;AAE3C,OAAO,EAAE,OAAO,EAAE,MAAM,uBAAuB,CAAC;AAGhD,OAAO,EAAgB,oBAAoB,EAAE,MAAM,mBAAmB,CAAC;AACvE,OAAO,EAAE,UAAU,EAAE,cAAc,EAAE,eAAe,EAAE,MAAM,iBAAiB,CAAC;AAC9E,OAAO,EAAE,SAAS,EAAE,aAAa,EAAiB,UAAU,EAAE,MAAM,qBAAqB,CAAC;AAO1F,cAAc;AACd,qBAAa,aAAc,YAAW,gBAAgB,CAAC,OAAO,CAAC;IAC3D,SAAS,CAAC,MAAM,EAAE,UAAU,CAAC;gBACjB,MAAM,EAAE,UAAU,GAAG,oBAAoB,GAAG,QAAQ,CAAC,oBAAoB,CAAC;IAG/E,CAAC,MAAM,CAAC,QAAQ,CAAC,IAAI,gBAAgB,CAAC,OAAO,CAAC;IAC9C,IAAI,IAAI,cAAc,CAAC,OAAO,CAAC;IAW/B,KAAK,CAAC,KAAK,CAAC,EAAE,GAAG;IACjB,MAAM,CAAC,KAAK,CAAC,EAAE,GAAG;IAClB,WAAW,CAAC,CAAC,SAAS,aAAa,EAAE,IAAI,CAAC,EAAE,CAAC,GAAG,IAAI;IAQpD,eAAe,CAAC,UAAU,EAAE,MAAM,GAAG,UAAU;IAW/C,UAAU,CAAC,WAAW,UAAQ;IASrC,SAAS,CAAC,kBAAkB,IAAI,cAAc,CAAC,MAAM,CAAC;IAMtD,SAAS,CAAC,YAAY,CAAC,cAAc,EAAE,MAAM,GAAG,cAAc,CAAC,OAAO,CAAC;CAQ1E;AAED,cAAc;AACd,qBAAa,kBAAmB,YAAW,qBAAqB,CAAC,OAAO,CAAC;IACrE,SAAS,CAAC,MAAM,EAAE,eAAe,CAAC;gBACtB,MAAM,EAAE,cAAc,CAAC,UAAU,CAAC;gBAClC,MAAM,EAAE,UAAU,EAAE,UAAU,CAAC,EAAE,MAAM;IAO5C,CAAC,MAAM,CAAC,aAAa,CAAC,IAAI,qBAAqB,CAAC,OAAO,CAAC;IAClD,IAAI,IAAI,OAAO,CAAC,cAAc,CAAC,OAAO,CAAC,CAAC;IAWxC,KAAK,CAAC,KAAK,CAAC,EAAE,GAAG;IACjB,MAAM,CAAC,KAAK,CAAC,EAAE,GAAG;IAClB,WAAW,CAAC,CAAC,SAAS,aAAa,EAAE,IAAI,CAAC,EAAE,CAAC,GAAG,IAAI;IAQpD,eAAe,CAAC,UAAU,EAAE,MAAM,GAAG,OAAO,CAAC,UAAU,CAAC;IAWxD,UAAU,CAAC,WAAW,UAAQ;cAS3B,kBAAkB,IAAI,OAAO,CAAC,cAAc,CAAC,MAAM,CAAC,CAAC;cAMrD,YAAY,CAAC,cAAc,EAAE,MAAM,GAAG,OAAO,CAAC,cAAc,CAAC,OAAO,CAAC,CAAC;CAQzF;AAED,cAAc;AACd,qBAAa,iBAAkB,SAAQ,aAAa;IAChD,OAAO,CAAC,OAAO,CAAS;IACxB,OAAO,CAAC,KAAK,CAAY;IACzB,OAAO,CAAC,KAAK,CAAa;IAC1B,OAAO,CAAC,WAAW,CAAK;IACxB,OAAO,CAAC,gBAAgB,CAAK;gBACjB,MAAM,EAAE,SAAS,GAAG,aAAa;IAItC,IAAI;IAsBJ,eAAe,CAAC,WAAW,CAAC,EAAE,MAAM;IAapC,WAAW,CAAC,CAAC,SAAS,aAAa,EAAE,IAAI,CAAC,EAAE,CAAC,GAAG,IAAI;IAQpD,UAAU;CASpB;AAED,cAAc;AACd,eAAO,MAAM,OAAO,IAAI,CAAC;AACzB,cAAc;AACd,eAAO,MAAM,SAAS,WAAW,CAAC;AAClC,cAAc;AACd,eAAO,MAAM,KAAK,YAAmC,CAAC;AAMtD,cAAc;AACd,wBAAgB,wBAAwB,CAAC,MAAM,EAAE,UAAU,EAAE,KAAK,SAAI,WAOrE;AAED,cAAc;AACd,eAAO,MAAM,WAAW,QAAe,CAAC;AACxC,cAAc;AACd,eAAO,MAAM,eAAe,QAAwB,CAAC;AACrD,cAAc;AACd,eAAO,MAAM,iBAAiB,QAA4B,CAAC","file":"message.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/message.js b/igv_component/node_modules/apache-arrow/ipc/message.js
new file mode 100644
index 0000000000000000000000000000000000000000..c04eea45fb61e69098aff429c3b84f1002edf267
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/message.js
@@ -0,0 +1,294 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.magicX2AndPadding = exports.magicAndPadding = exports.magicLength = exports.checkForMagicArrowString = exports.MAGIC = exports.MAGIC_STR = exports.PADDING = exports.JSONMessageReader = exports.AsyncMessageReader = exports.MessageReader = void 0;
+const tslib_1 = require("tslib");
+const enum_js_1 = require("../enum.js");
+const flatbuffers_1 = require("flatbuffers");
+const message_js_1 = require("./metadata/message.js");
+const compat_js_1 = require("../util/compat.js");
+const file_js_1 = require("../io/file.js");
+const buffer_js_1 = require("../util/buffer.js");
+const stream_js_1 = require("../io/stream.js");
+const interfaces_js_1 = require("../io/interfaces.js");
+/** @ignore */ const invalidMessageType = (type) => `Expected ${enum_js_1.MessageHeader[type]} Message in stream, but was null or length 0.`;
+/** @ignore */ const nullMessage = (type) => `Header pointer of flatbuffer-encoded ${enum_js_1.MessageHeader[type]} Message is null or length 0.`;
+/** @ignore */ const invalidMessageMetadata = (expected, actual) => `Expected to read ${expected} metadata bytes, but only read ${actual}.`;
+/** @ignore */ const invalidMessageBodyLength = (expected, actual) => `Expected to read ${expected} bytes for message body, but only read ${actual}.`;
+/** @ignore */
+class MessageReader {
+    constructor(source) {
+        this.source = source instanceof stream_js_1.ByteStream ? source : new stream_js_1.ByteStream(source);
+    }
+    [Symbol.iterator]() { return this; }
+    next() {
+        let r;
+        if ((r = this.readMetadataLength()).done) {
+            return interfaces_js_1.ITERATOR_DONE;
+        }
+        // ARROW-6313: If the first 4 bytes are continuation indicator (-1), read
+        // the next 4 for the 32-bit metadata length. Otherwise, assume this is a
+        // pre-v0.15 message, where the first 4 bytes are the metadata length.
+        if ((r.value === -1) &&
+            (r = this.readMetadataLength()).done) {
+            return interfaces_js_1.ITERATOR_DONE;
+        }
+        if ((r = this.readMetadata(r.value)).done) {
+            return interfaces_js_1.ITERATOR_DONE;
+        }
+        return r;
+    }
+    throw(value) { return this.source.throw(value); }
+    return(value) { return this.source.return(value); }
+    readMessage(type) {
+        let r;
+        if ((r = this.next()).done) {
+            return null;
+        }
+        if ((type != null) && r.value.headerType !== type) {
+            throw new Error(invalidMessageType(type));
+        }
+        return r.value;
+    }
+    readMessageBody(bodyLength) {
+        if (bodyLength <= 0) {
+            return new Uint8Array(0);
+        }
+        const buf = (0, buffer_js_1.toUint8Array)(this.source.read(bodyLength));
+        if (buf.byteLength < bodyLength) {
+            throw new Error(invalidMessageBodyLength(bodyLength, buf.byteLength));
+        }
+        // 1. Work around bugs in fs.ReadStream's internal Buffer pooling, see: https://github.com/nodejs/node/issues/24817
+        // 2. Work around https://github.com/whatwg/streams/blob/0ebe4b042e467d9876d80ae045de3843092ad797/reference-implementation/lib/helpers.js#L126
+        return /* 1. */ (buf.byteOffset % 8 === 0) &&
+            /* 2. */ (buf.byteOffset + buf.byteLength) <= buf.buffer.byteLength ? buf : buf.slice();
+    }
+    readSchema(throwIfNull = false) {
+        const type = enum_js_1.MessageHeader.Schema;
+        const message = this.readMessage(type);
+        const schema = message === null || message === void 0 ? void 0 : message.header();
+        if (throwIfNull && !schema) {
+            throw new Error(nullMessage(type));
+        }
+        return schema;
+    }
+    readMetadataLength() {
+        const buf = this.source.read(exports.PADDING);
+        const bb = buf && new flatbuffers_1.ByteBuffer(buf);
+        const len = (bb === null || bb === void 0 ? void 0 : bb.readInt32(0)) || 0;
+        return { done: len === 0, value: len };
+    }
+    readMetadata(metadataLength) {
+        const buf = this.source.read(metadataLength);
+        if (!buf) {
+            return interfaces_js_1.ITERATOR_DONE;
+        }
+        if (buf.byteLength < metadataLength) {
+            throw new Error(invalidMessageMetadata(metadataLength, buf.byteLength));
+        }
+        return { done: false, value: message_js_1.Message.decode(buf) };
+    }
+}
+exports.MessageReader = MessageReader;
+/** @ignore */
+class AsyncMessageReader {
+    constructor(source, byteLength) {
+        this.source = source instanceof stream_js_1.AsyncByteStream ? source
+            : (0, compat_js_1.isFileHandle)(source)
+                ? new file_js_1.AsyncRandomAccessFile(source, byteLength)
+                : new stream_js_1.AsyncByteStream(source);
+    }
+    [Symbol.asyncIterator]() { return this; }
+    next() {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            let r;
+            if ((r = yield this.readMetadataLength()).done) {
+                return interfaces_js_1.ITERATOR_DONE;
+            }
+            // ARROW-6313: If the first 4 bytes are continuation indicator (-1), read
+            // the next 4 for the 32-bit metadata length. Otherwise, assume this is a
+            // pre-v0.15 message, where the first 4 bytes are the metadata length.
+            if ((r.value === -1) &&
+                (r = yield this.readMetadataLength()).done) {
+                return interfaces_js_1.ITERATOR_DONE;
+            }
+            if ((r = yield this.readMetadata(r.value)).done) {
+                return interfaces_js_1.ITERATOR_DONE;
+            }
+            return r;
+        });
+    }
+    throw(value) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () { return yield this.source.throw(value); });
+    }
+    return(value) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () { return yield this.source.return(value); });
+    }
+    readMessage(type) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            let r;
+            if ((r = yield this.next()).done) {
+                return null;
+            }
+            if ((type != null) && r.value.headerType !== type) {
+                throw new Error(invalidMessageType(type));
+            }
+            return r.value;
+        });
+    }
+    readMessageBody(bodyLength) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            if (bodyLength <= 0) {
+                return new Uint8Array(0);
+            }
+            const buf = (0, buffer_js_1.toUint8Array)(yield this.source.read(bodyLength));
+            if (buf.byteLength < bodyLength) {
+                throw new Error(invalidMessageBodyLength(bodyLength, buf.byteLength));
+            }
+            // 1. Work around bugs in fs.ReadStream's internal Buffer pooling, see: https://github.com/nodejs/node/issues/24817
+            // 2. Work around https://github.com/whatwg/streams/blob/0ebe4b042e467d9876d80ae045de3843092ad797/reference-implementation/lib/helpers.js#L126
+            return /* 1. */ (buf.byteOffset % 8 === 0) &&
+                /* 2. */ (buf.byteOffset + buf.byteLength) <= buf.buffer.byteLength ? buf : buf.slice();
+        });
+    }
+    readSchema(throwIfNull = false) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            const type = enum_js_1.MessageHeader.Schema;
+            const message = yield this.readMessage(type);
+            const schema = message === null || message === void 0 ? void 0 : message.header();
+            if (throwIfNull && !schema) {
+                throw new Error(nullMessage(type));
+            }
+            return schema;
+        });
+    }
+    readMetadataLength() {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            const buf = yield this.source.read(exports.PADDING);
+            const bb = buf && new flatbuffers_1.ByteBuffer(buf);
+            const len = (bb === null || bb === void 0 ? void 0 : bb.readInt32(0)) || 0;
+            return { done: len === 0, value: len };
+        });
+    }
+    readMetadata(metadataLength) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            const buf = yield this.source.read(metadataLength);
+            if (!buf) {
+                return interfaces_js_1.ITERATOR_DONE;
+            }
+            if (buf.byteLength < metadataLength) {
+                throw new Error(invalidMessageMetadata(metadataLength, buf.byteLength));
+            }
+            return { done: false, value: message_js_1.Message.decode(buf) };
+        });
+    }
+}
+exports.AsyncMessageReader = AsyncMessageReader;
+/** @ignore */
+class JSONMessageReader extends MessageReader {
+    constructor(source) {
+        super(new Uint8Array(0));
+        this._schema = false;
+        this._body = [];
+        this._batchIndex = 0;
+        this._dictionaryIndex = 0;
+        this._json = source instanceof interfaces_js_1.ArrowJSON ? source : new interfaces_js_1.ArrowJSON(source);
+    }
+    next() {
+        const { _json } = this;
+        if (!this._schema) {
+            this._schema = true;
+            const message = message_js_1.Message.fromJSON(_json.schema, enum_js_1.MessageHeader.Schema);
+            return { done: false, value: message };
+        }
+        if (this._dictionaryIndex < _json.dictionaries.length) {
+            const batch = _json.dictionaries[this._dictionaryIndex++];
+            this._body = batch['data']['columns'];
+            const message = message_js_1.Message.fromJSON(batch, enum_js_1.MessageHeader.DictionaryBatch);
+            return { done: false, value: message };
+        }
+        if (this._batchIndex < _json.batches.length) {
+            const batch = _json.batches[this._batchIndex++];
+            this._body = batch['columns'];
+            const message = message_js_1.Message.fromJSON(batch, enum_js_1.MessageHeader.RecordBatch);
+            return { done: false, value: message };
+        }
+        this._body = [];
+        return interfaces_js_1.ITERATOR_DONE;
+    }
+    readMessageBody(_bodyLength) {
+        return flattenDataSources(this._body);
+        function flattenDataSources(xs) {
+            return (xs || []).reduce((buffers, column) => [
+                ...buffers,
+                ...(column['VALIDITY'] && [column['VALIDITY']] || []),
+                ...(column['TYPE'] && [column['TYPE']] || []),
+                ...(column['OFFSET'] && [column['OFFSET']] || []),
+                ...(column['DATA'] && [column['DATA']] || []),
+                ...flattenDataSources(column['children'])
+            ], []);
+        }
+    }
+    readMessage(type) {
+        let r;
+        if ((r = this.next()).done) {
+            return null;
+        }
+        if ((type != null) && r.value.headerType !== type) {
+            throw new Error(invalidMessageType(type));
+        }
+        return r.value;
+    }
+    readSchema() {
+        const type = enum_js_1.MessageHeader.Schema;
+        const message = this.readMessage(type);
+        const schema = message === null || message === void 0 ? void 0 : message.header();
+        if (!message || !schema) {
+            throw new Error(nullMessage(type));
+        }
+        return schema;
+    }
+}
+exports.JSONMessageReader = JSONMessageReader;
+/** @ignore */
+exports.PADDING = 4;
+/** @ignore */
+exports.MAGIC_STR = 'ARROW1';
+/** @ignore */
+exports.MAGIC = new Uint8Array(exports.MAGIC_STR.length);
+for (let i = 0; i < exports.MAGIC_STR.length; i += 1) {
+    exports.MAGIC[i] = exports.MAGIC_STR.codePointAt(i);
+}
+/** @ignore */
+function checkForMagicArrowString(buffer, index = 0) {
+    for (let i = -1, n = exports.MAGIC.length; ++i < n;) {
+        if (exports.MAGIC[i] !== buffer[index + i]) {
+            return false;
+        }
+    }
+    return true;
+}
+exports.checkForMagicArrowString = checkForMagicArrowString;
+/** @ignore */
+exports.magicLength = exports.MAGIC.length;
+/** @ignore */
+exports.magicAndPadding = exports.magicLength + exports.PADDING;
+/** @ignore */
+exports.magicX2AndPadding = exports.magicLength * 2 + exports.PADDING;
+
+//# sourceMappingURL=message.js.map
diff --git a/igv_component/node_modules/apache-arrow/ipc/message.js.map b/igv_component/node_modules/apache-arrow/ipc/message.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..f1e3dc30f1b612f2c3f0e26238df1113c4e2c811
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/message.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["ipc/message.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;;AAErB,wCAA2C;AAC3C,6CAAyC;AACzC,sDAAgD;AAChD,iDAAiD;AACjD,2CAAsD;AACtD,iDAAuE;AACvE,+CAA8E;AAC9E,uDAA0F;AAE1F,cAAc,CAAC,MAAM,kBAAkB,GAAG,CAAC,IAAmB,EAAE,EAAE,CAAC,YAAY,uBAAa,CAAC,IAAI,CAAC,+CAA+C,CAAC;AAClJ,cAAc,CAAC,MAAM,WAAW,GAAG,CAAC,IAAmB,EAAE,EAAE,CAAC,wCAAwC,uBAAa,CAAC,IAAI,CAAC,+BAA+B,CAAC;AACvJ,cAAc,CAAC,MAAM,sBAAsB,GAAG,CAAC,QAAgB,EAAE,MAAc,EAAE,EAAE,CAAC,oBAAoB,QAAQ,kCAAkC,MAAM,GAAG,CAAC;AAC5J,cAAc,CAAC,MAAM,wBAAwB,GAAG,CAAC,QAAgB,EAAE,MAAc,EAAE,EAAE,CAAC,oBAAoB,QAAQ,0CAA0C,MAAM,GAAG,CAAC;AAEtK,cAAc;AACd,MAAa,aAAa;IAEtB,YAAY,MAA0E;QAClF,IAAI,CAAC,MAAM,GAAG,MAAM,YAAY,sBAAU,CAAC,CAAC,CAAC,MAAM,CAAC,CAAC,CAAC,IAAI,sBAAU,CAAC,MAAM,CAAC,CAAC;IACjF,CAAC;IACM,CAAC,MAAM,CAAC,QAAQ,CAAC,KAAgC,OAAO,IAAiC,CAAC,CAAC,CAAC;IAC5F,IAAI;QACP,IAAI,CAAC,CAAC;QACN,IAAI,CAAC,CAAC,GAAG,IAAI,CAAC,kBAAkB,EAAE,CAAC,CAAC,IAAI,EAAE;YAAE,OAAO,6BAAa,CAAC;SAAE;QACnE,yEAAyE;QACzE,yEAAyE;QACzE,sEAAsE;QACtE,IAAI,CAAC,CAAC,CAAC,KAAK,KAAK,CAAC,CAAC,CAAC;YAChB,CAAC,CAAC,GAAG,IAAI,CAAC,kBAAkB,EAAE,CAAC,CAAC,IAAI,EAAE;YAAE,OAAO,6BAAa,CAAC;SAAE;QACnE,IAAI,CAAC,CAAC,GAAG,IAAI,CAAC,YAAY,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC,IAAI,EAAE;YAAE,OAAO,6BAAa,CAAC;SAAE;QACpE,OAAa,CAA6B,CAAC;IAC/C,CAAC;IACM,KAAK,CAAC,KAAW,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,KAAK,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IACvD,MAAM,CAAC,KAAW,IAAI,OAAO,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;IACzD,WAAW,CAA0B,IAAe;QACvD,IAAI,CAA6B,CAAC;QAClC,IAAI,CAAC,CAAC,GAAG,IAAI,CAAC,IAAI,EAAE,CAAC,CAAC,IAAI,EAAE;YAAE,OAAO,IAAI,CAAC;SAAE;QAC5C,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,IAAI,CAAC,CAAC,KAAK,CAAC,UAAU,KAAK,IAAI,EAAE;YAC/C,MAAM,IAAI,KAAK,CAAC,kBAAkB,CAAC,IAAI,CAAC,CAAC,CAAC;SAC7C;QACD,OAAO,CAAC,CAAC,KAAK,CAAC;IACnB,CAAC;IACM,eAAe,CAAC,UAAkB;QACrC,IAAI,UAAU,IAAI,CAAC,EAAE;YAAE,OAAO,IAAI,UAAU,CAAC,CAAC,CAAC,CAAC;SAAE;QAClD,MAAM,GAAG,GAAG,IAAA,wBAAY,EAAC,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,UAAU,CAAC,CAAC,CAAC;QACvD,IAAI,GAAG,CAAC,UAAU,GAAG,UAAU,EAAE;YAC7B,MAAM,IAAI,KAAK,CAAC,wBAAwB,CAAC,UAAU,EAAE,GAAG,CAAC,UAAU,CAAC,CAAC,CAAC;SACzE;QACD,mHAAmH;QACnH,8IAA8I;QAC9I,OAAO,QAAQ,CAAC,CAAC,GAAG,CAAC,UAAU,GAAG,CAAC,KAAK,CAAC,CAAC;YACnC,QAAQ,CAAC,CAAC,GAAG,CAAC,UAAU,GAAG,GAAG,CAAC,UAAU,CAAC,IAAI,GAAG,CAAC,MAAM,CAAC,UAAU,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,CAAC,KAAK,EAAE,CAAC;IACnG,CAAC;IACM,UAAU,CAAC,WAAW,GAAG,KAAK;QACjC,MAAM,IAAI,GAAG,uBAAa,CAAC,MAAM,CAAC;QAClC,MAAM,OAAO,GAAG,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,CAAC;QACvC,MAAM,MAAM,GAAG,OAAO,aAAP,OAAO,uBAAP,OAAO,CAAE,MAAM,EAAE,CAAC;QACjC,IAAI,WAAW,IAAI,CAAC,MAAM,EAAE;YACxB,MAAM,IAAI,KAAK,CAAC,WAAW,CAAC,IAAI,CAAC,CAAC,CAAC;SACtC;QACD,OAAO,MAAM,CAAC;IAClB,CAAC;IACS,kBAAkB;QACxB,MAAM,GAAG,GAAG,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,eAAO,CAAC,CAAC;QACtC,MAAM,EAAE,GAAG,GAAG,IAAI,IAAI,wBAAU,CAAC,GAAG,CAAC,CAAC;QACtC,MAAM,GAAG,GAAG,CAAA,EAAE,aAAF,EAAE,uBAAF,EAAE,CAAE,SAAS,CAAC,CAAC,CAAC,KAAI,CAAC,CAAC;QAClC,OAAO,EAAE,IAAI,EAAE,GAAG,KAAK,CAAC,EAAE,KAAK,EAAE,GAAG,EAAE,CAAC;IAC3C,CAAC;IACS,YAAY,CAAC,cAAsB;QACzC,MAAM,GAAG,GAAG,IAAI,CAAC,MAAM,CAAC,IAAI,CAAC,cAAc,CAAC,CAAC;QAC7C,IAAI,CAAC,GAAG,EAAE;YAAE,OAAO,6BAAa,CAAC;SAAE;QACnC,IAAI,GAAG,CAAC,UAAU,GAAG,cAAc,EAAE;YACjC,MAAM,IAAI,KAAK,CAAC,sBAAsB,CAAC,cAAc,EAAE,GAAG,CAAC,UAAU,CAAC,CAAC,CAAC;SAC3E;QACD,OAAO,EAAE,IAAI,EAAE,KAAK,EAAE,KAAK,EAAE,oBAAO,CAAC,MAAM,CAAC,GAAG,CAAC,EAAE,CAAC;IACvD,CAAC;CACJ;AA7DD,sCA6DC;AAED,cAAc;AACd,MAAa,kBAAkB;IAI3B,YAAY,MAAW,EAAE,UAAmB;QACxC,IAAI,CAAC,MAAM,GAAG,MAAM,YAAY,2BAAe,CAAC,CAAC,CAAC,MAAM;YACpD,CAAC,CAAC,IAAA,wBAAY,EAAC,MAAM,CAAC;gBAClB,CAAC,CAAC,IAAI,+BAAqB,CAAC,MAAM,EAAE,UAAW,CAAC;gBAChD,CAAC,CAAC,IAAI,2BAAe,CAAC,MAAM,CAAC,CAAC;IAC1C,CAAC;IACM,CAAC,MAAM,CAAC,aAAa,CAAC,KAAqC,OAAO,IAAsC,CAAC,CAAC,CAAC;IACrG,IAAI;;YACb,IAAI,CAAC,CAAC;YACN,IAAI,CAAC,CAAC,GAAG,MAAM,IAAI,CAAC,kBAAkB,EAAE,CAAC,CAAC,IAAI,EAAE;gBAAE,OAAO,6BAAa,CAAC;aAAE;YACzE,yEAAyE;YACzE,yEAAyE;YACzE,sEAAsE;YACtE,IAAI,CAAC,CAAC,CAAC,KAAK,KAAK,CAAC,CAAC,CAAC;gBAChB,CAAC,CAAC,GAAG,MAAM,IAAI,CAAC,kBAAkB,EAAE,CAAC,CAAC,IAAI,EAAE;gBAAE,OAAO,6BAAa,CAAC;aAAE;YACzE,IAAI,CAAC,CAAC,GAAG,MAAM,IAAI,CAAC,YAAY,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC,IAAI,EAAE;gBAAE,OAAO,6BAAa,CAAC;aAAE;YAC1E,OAAa,CAA6B,CAAC;QAC/C,CAAC;KAAA;IACY,KAAK,CAAC,KAAW;sEAAI,OAAO,MAAM,IAAI,CAAC,MAAM,CAAC,KAAK,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;KAAA;IAC7D,MAAM,CAAC,KAAW;sEAAI,OAAO,MAAM,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC;KAAA;IAC/D,WAAW,CAA0B,IAAe;;YAC7D,IAAI,CAA6B,CAAC;YAClC,IAAI,CAAC,CAAC,GAAG,MAAM,IAAI,CAAC,IAAI,EAAE,CAAC,CAAC,IAAI,EAAE;gBAAE,OAAO,IAAI,CAAC;aAAE;YAClD,IAAI,CAAC,IAAI,IAAI,IAAI,CAAC,IAAI,CAAC,CAAC,KAAK,CAAC,UAAU,KAAK,IAAI,EAAE;gBAC/C,MAAM,IAAI,KAAK,CAAC,kBAAkB,CAAC,IAAI,CAAC,CAAC,CAAC;aAC7C;YACD,OAAO,CAAC,CAAC,KAAK,CAAC;QACnB,CAAC;KAAA;IACY,eAAe,CAAC,UAAkB;;YAC3C,IAAI,UAAU,IAAI,CAAC,EAAE;gBAAE,OAAO,IAAI,UAAU,CAAC,CAAC,CAAC,CAAC;aAAE;YAClD,MAAM,GAAG,GAAG,IAAA,wBAAY,EAAC,MAAM,IAAI,CAA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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/message.mjs b/igv_component/node_modules/apache-arrow/ipc/message.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..9039b330788b9a168fe8e87ad2859454ace0fb4a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/message.mjs
@@ -0,0 +1,287 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { __awaiter } from "tslib";
+import { MessageHeader } from '../enum.mjs';
+import { ByteBuffer } from 'flatbuffers';
+import { Message } from './metadata/message.mjs';
+import { isFileHandle } from '../util/compat.mjs';
+import { AsyncRandomAccessFile } from '../io/file.mjs';
+import { toUint8Array } from '../util/buffer.mjs';
+import { ByteStream, AsyncByteStream } from '../io/stream.mjs';
+import { ArrowJSON, ITERATOR_DONE } from '../io/interfaces.mjs';
+/** @ignore */ const invalidMessageType = (type) => `Expected ${MessageHeader[type]} Message in stream, but was null or length 0.`;
+/** @ignore */ const nullMessage = (type) => `Header pointer of flatbuffer-encoded ${MessageHeader[type]} Message is null or length 0.`;
+/** @ignore */ const invalidMessageMetadata = (expected, actual) => `Expected to read ${expected} metadata bytes, but only read ${actual}.`;
+/** @ignore */ const invalidMessageBodyLength = (expected, actual) => `Expected to read ${expected} bytes for message body, but only read ${actual}.`;
+/** @ignore */
+export class MessageReader {
+    constructor(source) {
+        this.source = source instanceof ByteStream ? source : new ByteStream(source);
+    }
+    [Symbol.iterator]() { return this; }
+    next() {
+        let r;
+        if ((r = this.readMetadataLength()).done) {
+            return ITERATOR_DONE;
+        }
+        // ARROW-6313: If the first 4 bytes are continuation indicator (-1), read
+        // the next 4 for the 32-bit metadata length. Otherwise, assume this is a
+        // pre-v0.15 message, where the first 4 bytes are the metadata length.
+        if ((r.value === -1) &&
+            (r = this.readMetadataLength()).done) {
+            return ITERATOR_DONE;
+        }
+        if ((r = this.readMetadata(r.value)).done) {
+            return ITERATOR_DONE;
+        }
+        return r;
+    }
+    throw(value) { return this.source.throw(value); }
+    return(value) { return this.source.return(value); }
+    readMessage(type) {
+        let r;
+        if ((r = this.next()).done) {
+            return null;
+        }
+        if ((type != null) && r.value.headerType !== type) {
+            throw new Error(invalidMessageType(type));
+        }
+        return r.value;
+    }
+    readMessageBody(bodyLength) {
+        if (bodyLength <= 0) {
+            return new Uint8Array(0);
+        }
+        const buf = toUint8Array(this.source.read(bodyLength));
+        if (buf.byteLength < bodyLength) {
+            throw new Error(invalidMessageBodyLength(bodyLength, buf.byteLength));
+        }
+        // 1. Work around bugs in fs.ReadStream's internal Buffer pooling, see: https://github.com/nodejs/node/issues/24817
+        // 2. Work around https://github.com/whatwg/streams/blob/0ebe4b042e467d9876d80ae045de3843092ad797/reference-implementation/lib/helpers.js#L126
+        return /* 1. */ (buf.byteOffset % 8 === 0) &&
+            /* 2. */ (buf.byteOffset + buf.byteLength) <= buf.buffer.byteLength ? buf : buf.slice();
+    }
+    readSchema(throwIfNull = false) {
+        const type = MessageHeader.Schema;
+        const message = this.readMessage(type);
+        const schema = message === null || message === void 0 ? void 0 : message.header();
+        if (throwIfNull && !schema) {
+            throw new Error(nullMessage(type));
+        }
+        return schema;
+    }
+    readMetadataLength() {
+        const buf = this.source.read(PADDING);
+        const bb = buf && new ByteBuffer(buf);
+        const len = (bb === null || bb === void 0 ? void 0 : bb.readInt32(0)) || 0;
+        return { done: len === 0, value: len };
+    }
+    readMetadata(metadataLength) {
+        const buf = this.source.read(metadataLength);
+        if (!buf) {
+            return ITERATOR_DONE;
+        }
+        if (buf.byteLength < metadataLength) {
+            throw new Error(invalidMessageMetadata(metadataLength, buf.byteLength));
+        }
+        return { done: false, value: Message.decode(buf) };
+    }
+}
+/** @ignore */
+export class AsyncMessageReader {
+    constructor(source, byteLength) {
+        this.source = source instanceof AsyncByteStream ? source
+            : isFileHandle(source)
+                ? new AsyncRandomAccessFile(source, byteLength)
+                : new AsyncByteStream(source);
+    }
+    [Symbol.asyncIterator]() { return this; }
+    next() {
+        return __awaiter(this, void 0, void 0, function* () {
+            let r;
+            if ((r = yield this.readMetadataLength()).done) {
+                return ITERATOR_DONE;
+            }
+            // ARROW-6313: If the first 4 bytes are continuation indicator (-1), read
+            // the next 4 for the 32-bit metadata length. Otherwise, assume this is a
+            // pre-v0.15 message, where the first 4 bytes are the metadata length.
+            if ((r.value === -1) &&
+                (r = yield this.readMetadataLength()).done) {
+                return ITERATOR_DONE;
+            }
+            if ((r = yield this.readMetadata(r.value)).done) {
+                return ITERATOR_DONE;
+            }
+            return r;
+        });
+    }
+    throw(value) {
+        return __awaiter(this, void 0, void 0, function* () { return yield this.source.throw(value); });
+    }
+    return(value) {
+        return __awaiter(this, void 0, void 0, function* () { return yield this.source.return(value); });
+    }
+    readMessage(type) {
+        return __awaiter(this, void 0, void 0, function* () {
+            let r;
+            if ((r = yield this.next()).done) {
+                return null;
+            }
+            if ((type != null) && r.value.headerType !== type) {
+                throw new Error(invalidMessageType(type));
+            }
+            return r.value;
+        });
+    }
+    readMessageBody(bodyLength) {
+        return __awaiter(this, void 0, void 0, function* () {
+            if (bodyLength <= 0) {
+                return new Uint8Array(0);
+            }
+            const buf = toUint8Array(yield this.source.read(bodyLength));
+            if (buf.byteLength < bodyLength) {
+                throw new Error(invalidMessageBodyLength(bodyLength, buf.byteLength));
+            }
+            // 1. Work around bugs in fs.ReadStream's internal Buffer pooling, see: https://github.com/nodejs/node/issues/24817
+            // 2. Work around https://github.com/whatwg/streams/blob/0ebe4b042e467d9876d80ae045de3843092ad797/reference-implementation/lib/helpers.js#L126
+            return /* 1. */ (buf.byteOffset % 8 === 0) &&
+                /* 2. */ (buf.byteOffset + buf.byteLength) <= buf.buffer.byteLength ? buf : buf.slice();
+        });
+    }
+    readSchema(throwIfNull = false) {
+        return __awaiter(this, void 0, void 0, function* () {
+            const type = MessageHeader.Schema;
+            const message = yield this.readMessage(type);
+            const schema = message === null || message === void 0 ? void 0 : message.header();
+            if (throwIfNull && !schema) {
+                throw new Error(nullMessage(type));
+            }
+            return schema;
+        });
+    }
+    readMetadataLength() {
+        return __awaiter(this, void 0, void 0, function* () {
+            const buf = yield this.source.read(PADDING);
+            const bb = buf && new ByteBuffer(buf);
+            const len = (bb === null || bb === void 0 ? void 0 : bb.readInt32(0)) || 0;
+            return { done: len === 0, value: len };
+        });
+    }
+    readMetadata(metadataLength) {
+        return __awaiter(this, void 0, void 0, function* () {
+            const buf = yield this.source.read(metadataLength);
+            if (!buf) {
+                return ITERATOR_DONE;
+            }
+            if (buf.byteLength < metadataLength) {
+                throw new Error(invalidMessageMetadata(metadataLength, buf.byteLength));
+            }
+            return { done: false, value: Message.decode(buf) };
+        });
+    }
+}
+/** @ignore */
+export class JSONMessageReader extends MessageReader {
+    constructor(source) {
+        super(new Uint8Array(0));
+        this._schema = false;
+        this._body = [];
+        this._batchIndex = 0;
+        this._dictionaryIndex = 0;
+        this._json = source instanceof ArrowJSON ? source : new ArrowJSON(source);
+    }
+    next() {
+        const { _json } = this;
+        if (!this._schema) {
+            this._schema = true;
+            const message = Message.fromJSON(_json.schema, MessageHeader.Schema);
+            return { done: false, value: message };
+        }
+        if (this._dictionaryIndex < _json.dictionaries.length) {
+            const batch = _json.dictionaries[this._dictionaryIndex++];
+            this._body = batch['data']['columns'];
+            const message = Message.fromJSON(batch, MessageHeader.DictionaryBatch);
+            return { done: false, value: message };
+        }
+        if (this._batchIndex < _json.batches.length) {
+            const batch = _json.batches[this._batchIndex++];
+            this._body = batch['columns'];
+            const message = Message.fromJSON(batch, MessageHeader.RecordBatch);
+            return { done: false, value: message };
+        }
+        this._body = [];
+        return ITERATOR_DONE;
+    }
+    readMessageBody(_bodyLength) {
+        return flattenDataSources(this._body);
+        function flattenDataSources(xs) {
+            return (xs || []).reduce((buffers, column) => [
+                ...buffers,
+                ...(column['VALIDITY'] && [column['VALIDITY']] || []),
+                ...(column['TYPE'] && [column['TYPE']] || []),
+                ...(column['OFFSET'] && [column['OFFSET']] || []),
+                ...(column['DATA'] && [column['DATA']] || []),
+                ...flattenDataSources(column['children'])
+            ], []);
+        }
+    }
+    readMessage(type) {
+        let r;
+        if ((r = this.next()).done) {
+            return null;
+        }
+        if ((type != null) && r.value.headerType !== type) {
+            throw new Error(invalidMessageType(type));
+        }
+        return r.value;
+    }
+    readSchema() {
+        const type = MessageHeader.Schema;
+        const message = this.readMessage(type);
+        const schema = message === null || message === void 0 ? void 0 : message.header();
+        if (!message || !schema) {
+            throw new Error(nullMessage(type));
+        }
+        return schema;
+    }
+}
+/** @ignore */
+export const PADDING = 4;
+/** @ignore */
+export const MAGIC_STR = 'ARROW1';
+/** @ignore */
+export const MAGIC = new Uint8Array(MAGIC_STR.length);
+for (let i = 0; i < MAGIC_STR.length; i += 1) {
+    MAGIC[i] = MAGIC_STR.codePointAt(i);
+}
+/** @ignore */
+export function checkForMagicArrowString(buffer, index = 0) {
+    for (let i = -1, n = MAGIC.length; ++i < n;) {
+        if (MAGIC[i] !== buffer[index + i]) {
+            return false;
+        }
+    }
+    return true;
+}
+/** @ignore */
+export const magicLength = MAGIC.length;
+/** @ignore */
+export const magicAndPadding = magicLength + PADDING;
+/** @ignore */
+export const magicX2AndPadding = magicLength * 2 + PADDING;
+
+//# sourceMappingURL=message.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/ipc/message.mjs.map b/igv_component/node_modules/apache-arrow/ipc/message.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..5453a35717f5a0d486072e57a3e17ecb2de093b2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/message.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/file.d.ts b/igv_component/node_modules/apache-arrow/ipc/metadata/file.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..7e8c58a6815e8e5cddf64e169aef87af972b493a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/file.d.ts
@@ -0,0 +1,37 @@
+import { Block as _Block } from '../../fb/block.js';
+import * as flatbuffers from 'flatbuffers';
+import Long = flatbuffers.Long;
+import Builder = flatbuffers.Builder;
+import { Schema } from '../../schema.js';
+import { MetadataVersion } from '../../enum.js';
+import { ArrayBufferViewInput } from '../../util/buffer.js';
+/** @ignore */
+declare class Footer_ {
+    schema: Schema;
+    version: MetadataVersion;
+    /** @nocollapse */
+    static decode(buf: ArrayBufferViewInput): Footer_;
+    /** @nocollapse */
+    static encode(footer: Footer_): Uint8Array;
+    protected _recordBatches: FileBlock[];
+    protected _dictionaryBatches: FileBlock[];
+    get numRecordBatches(): number;
+    get numDictionaries(): number;
+    constructor(schema: Schema, version?: MetadataVersion, recordBatches?: FileBlock[], dictionaryBatches?: FileBlock[]);
+    recordBatches(): Iterable<FileBlock>;
+    dictionaryBatches(): Iterable<FileBlock>;
+    getRecordBatch(index: number): FileBlock | null;
+    getDictionaryBatch(index: number): FileBlock | null;
+}
+export { Footer_ as Footer };
+/** @ignore */
+export declare class FileBlock {
+    /** @nocollapse */
+    static decode(block: _Block): FileBlock;
+    /** @nocollapse */
+    static encode(b: Builder, fileBlock: FileBlock): number;
+    offset: number;
+    bodyLength: number;
+    metaDataLength: number;
+    constructor(metaDataLength: number, bodyLength: Long | number, offset: Long | number);
+}
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/file.d.ts.map b/igv_component/node_modules/apache-arrow/ipc/metadata/file.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..d0fcf96a6c46e632f27886abfe9e6e99e3542c00
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/file.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["ipc/metadata/file.ts"],"names":[],"mappings":"AAmBA,OAAO,EAAE,KAAK,IAAI,MAAM,EAAE,MAAM,mBAAmB,CAAC;AAGpD,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,IAAI,GAAG,WAAW,CAAC,IAAI,CAAC;AAC/B,OAAO,OAAO,GAAG,WAAW,CAAC,OAAO,CAAC;AAGrC,OAAO,EAAE,MAAM,EAAE,MAAM,iBAAiB,CAAC;AACzC,OAAO,EAAE,eAAe,EAAE,MAAM,eAAe,CAAC;AAEhD,OAAO,EAAE,oBAAoB,EAAE,MAAM,sBAAsB,CAAC;AAE5D,cAAc;AACd,cAAM,OAAO;IA4CU,MAAM,EAAE,MAAM;IACtB,OAAO,EAAE,eAAe;IA3CnC,kBAAkB;WACJ,MAAM,CAAC,GAAG,EAAE,oBAAoB;IAO9C,kBAAkB;WACJ,MAAM,CAAC,MAAM,EAAE,OAAO;IA4BpC,UAAkB,cAAc,EAAE,SAAS,EAAE,CAAC;IAC9C,UAAkB,kBAAkB,EAAE,SAAS,EAAE,CAAC;IAClD,IAAW,gBAAgB,WAAyC;IACpE,IAAW,eAAe,WAA6C;gBAEpD,MAAM,EAAE,MAAM,EACtB,OAAO,GAAE,eAAoC,EACpD,aAAa,CAAC,EAAE,SAAS,EAAE,EAAE,iBAAiB,CAAC,EAAE,SAAS,EAAE;IAKxD,aAAa,IAAI,QAAQ,CAAC,SAAS,CAAC;IAMpC,iBAAiB,IAAI,QAAQ,CAAC,SAAS,CAAC;IAMzC,cAAc,CAAC,KAAK,EAAE,MAAM;IAM5B,kBAAkB,CAAC,KAAK,EAAE,MAAM;CAK1C;AAED,OAAO,EAAE,OAAO,IAAI,MAAM,EAAE,CAAC;AA6B7B,cAAc;AACd,qBAAa,SAAS;IAElB,kBAAkB;WACJ,MAAM,CAAC,KAAK,EAAE,MAAM;IAIlC,kBAAkB;WACJ,MAAM,CAAC,CAAC,EAAE,OAAO,EAAE,SAAS,EAAE,SAAS;IAO9C,MAAM,EAAE,MAAM,CAAC;IACf,UAAU,EAAE,MAAM,CAAC;IACnB,cAAc,EAAE,MAAM,CAAC;gBAElB,cAAc,EAAE,MAAM,EAAE,UAAU,EAAE,IAAI,GAAG,MAAM,EAAE,MAAM,EAAE,IAAI,GAAG,MAAM;CAKvF","file":"file.d.ts","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/file.js b/igv_component/node_modules/apache-arrow/ipc/metadata/file.js
new file mode 100644
index 0000000000000000000000000000000000000000..b59826bd37af3a5534d283f5c2610fe56add9985
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/file.js
@@ -0,0 +1,144 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.FileBlock = exports.Footer = void 0;
+const tslib_1 = require("tslib");
+/* eslint-disable @typescript-eslint/naming-convention */
+const block_js_1 = require("../../fb/block.js");
+const footer_js_1 = require("../../fb/footer.js");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+var Long = flatbuffers.Long;
+var Builder = flatbuffers.Builder;
+var ByteBuffer = flatbuffers.ByteBuffer;
+const schema_js_1 = require("../../schema.js");
+const enum_js_1 = require("../../enum.js");
+const buffer_js_1 = require("../../util/buffer.js");
+/** @ignore */
+class Footer_ {
+    constructor(schema, version = enum_js_1.MetadataVersion.V4, recordBatches, dictionaryBatches) {
+        this.schema = schema;
+        this.version = version;
+        recordBatches && (this._recordBatches = recordBatches);
+        dictionaryBatches && (this._dictionaryBatches = dictionaryBatches);
+    }
+    /** @nocollapse */
+    static decode(buf) {
+        buf = new ByteBuffer((0, buffer_js_1.toUint8Array)(buf));
+        const footer = footer_js_1.Footer.getRootAsFooter(buf);
+        const schema = schema_js_1.Schema.decode(footer.schema());
+        return new OffHeapFooter(schema, footer);
+    }
+    /** @nocollapse */
+    static encode(footer) {
+        const b = new Builder();
+        const schemaOffset = schema_js_1.Schema.encode(b, footer.schema);
+        footer_js_1.Footer.startRecordBatchesVector(b, footer.numRecordBatches);
+        for (const rb of [...footer.recordBatches()].slice().reverse()) {
+            FileBlock.encode(b, rb);
+        }
+        const recordBatchesOffset = b.endVector();
+        footer_js_1.Footer.startDictionariesVector(b, footer.numDictionaries);
+        for (const db of [...footer.dictionaryBatches()].slice().reverse()) {
+            FileBlock.encode(b, db);
+        }
+        const dictionaryBatchesOffset = b.endVector();
+        footer_js_1.Footer.startFooter(b);
+        footer_js_1.Footer.addSchema(b, schemaOffset);
+        footer_js_1.Footer.addVersion(b, enum_js_1.MetadataVersion.V4);
+        footer_js_1.Footer.addRecordBatches(b, recordBatchesOffset);
+        footer_js_1.Footer.addDictionaries(b, dictionaryBatchesOffset);
+        footer_js_1.Footer.finishFooterBuffer(b, footer_js_1.Footer.endFooter(b));
+        return b.asUint8Array();
+    }
+    get numRecordBatches() { return this._recordBatches.length; }
+    get numDictionaries() { return this._dictionaryBatches.length; }
+    *recordBatches() {
+        for (let block, i = -1, n = this.numRecordBatches; ++i < n;) {
+            if (block = this.getRecordBatch(i)) {
+                yield block;
+            }
+        }
+    }
+    *dictionaryBatches() {
+        for (let block, i = -1, n = this.numDictionaries; ++i < n;) {
+            if (block = this.getDictionaryBatch(i)) {
+                yield block;
+            }
+        }
+    }
+    getRecordBatch(index) {
+        return index >= 0
+            && index < this.numRecordBatches
+            && this._recordBatches[index] || null;
+    }
+    getDictionaryBatch(index) {
+        return index >= 0
+            && index < this.numDictionaries
+            && this._dictionaryBatches[index] || null;
+    }
+}
+exports.Footer = Footer_;
+/** @ignore */
+class OffHeapFooter extends Footer_ {
+    constructor(schema, _footer) {
+        super(schema, _footer.version());
+        this._footer = _footer;
+    }
+    get numRecordBatches() { return this._footer.recordBatchesLength(); }
+    get numDictionaries() { return this._footer.dictionariesLength(); }
+    getRecordBatch(index) {
+        if (index >= 0 && index < this.numRecordBatches) {
+            const fileBlock = this._footer.recordBatches(index);
+            if (fileBlock) {
+                return FileBlock.decode(fileBlock);
+            }
+        }
+        return null;
+    }
+    getDictionaryBatch(index) {
+        if (index >= 0 && index < this.numDictionaries) {
+            const fileBlock = this._footer.dictionaries(index);
+            if (fileBlock) {
+                return FileBlock.decode(fileBlock);
+            }
+        }
+        return null;
+    }
+}
+/** @ignore */
+class FileBlock {
+    constructor(metaDataLength, bodyLength, offset) {
+        this.metaDataLength = metaDataLength;
+        this.offset = typeof offset === 'number' ? offset : offset.low;
+        this.bodyLength = typeof bodyLength === 'number' ? bodyLength : bodyLength.low;
+    }
+    /** @nocollapse */
+    static decode(block) {
+        return new FileBlock(block.metaDataLength(), block.bodyLength(), block.offset());
+    }
+    /** @nocollapse */
+    static encode(b, fileBlock) {
+        const { metaDataLength } = fileBlock;
+        const offset = new Long(fileBlock.offset, 0);
+        const bodyLength = new Long(fileBlock.bodyLength, 0);
+        return block_js_1.Block.createBlock(b, offset, metaDataLength, bodyLength);
+    }
+}
+exports.FileBlock = FileBlock;
+
+//# sourceMappingURL=file.js.map
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/file.js.map b/igv_component/node_modules/apache-arrow/ipc/metadata/file.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..3054fc2ef137f8452d8380ef6c47ece441aa3066
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/file.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["ipc/metadata/file.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;;AAErB,yDAAyD;AAEzD,gDAAoD;AACpD,kDAAuD;AAEvD,iEAA2C;AAE3C,IAAO,IAAI,GAAG,WAAW,CAAC,IAAI,CAAC;AAC/B,IAAO,OAAO,GAAG,WAAW,CAAC,OAAO,CAAC;AACrC,IAAO,UAAU,GAAG,WAAW,CAAC,UAAU,CAAC;AAE3C,+CAAyC;AACzC,2CAAgD;AAChD,oDAAoD;AAGpD,cAAc;AACd,MAAM,OAAO;IA4CT,YAAmB,MAAc,EACtB,UAA2B,yBAAe,CAAC,EAAE,EACpD,aAA2B,EAAE,iBAA+B;QAF7C,WAAM,GAAN,MAAM,CAAQ;QACtB,YAAO,GAAP,OAAO,CAAsC;QAEpD,aAAa,IAAI,CAAC,IAAI,CAAC,cAAc,GAAG,aAAa,CAAC,CAAC;QACvD,iBAAiB,IAAI,CAAC,IAAI,CAAC,kBAAkB,GAAG,iBAAiB,CAAC,CAAC;IACvE,CAAC;IA/CD,kBAAkB;IACX,MAAM,CAAC,MAAM,CAAC,GAAyB;QAC1C,GAAG,GAAG,IAAI,UAAU,CAAC,IAAA,wBAAY,EAAC,GAAG,CAAC,CAAC,CAAC;QACxC,MAAM,MAAM,GAAG,kBAAO,CAAC,eAAe,CAAC,GAAG,CAAC,CAAC;QAC5C,MAAM,MAAM,GAAG,kBAAM,CAAC,MAAM,CAAC,MAAM,CAAC,MAAM,EAAG,CAAC,CAAC;QAC/C,OAAO,IAAI,aAAa,CAAC,MAAM,EAAE,MAAM,CAAY,CAAC;IACxD,CAAC;IAED,kBAAkB;IACX,MAAM,CAAC,MAAM,CAAC,MAAe;QAEhC,MAAM,CAAC,GAAY,IAAI,OAAO,EAAE,CAAC;QACjC,MAAM,YAAY,GAAG,kBAAM,CAAC,MAAM,CAAC,CAAC,EAAE,MAAM,CAAC,MAAM,CAAC,CAAC;QAErD,kBAAO,CAAC,wBAAwB,CAAC,CAAC,EAAE,MAAM,CAAC,gBAAgB,CAAC,CAAC;QAC7D,KAAK,MAAM,EAAE,IAAI,CAAC,GAAG,MAAM,CAAC,aAAa,EAAE,CAAC,CAAC,KAAK,EAAE,CAAC,OAAO,EAAE,EAAE;YAC5D,SAAS,CAAC,MAAM,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC;SAC3B;QACD,MAAM,mBAAmB,GAAG,CAAC,CAAC,SAAS,EAAE,CAAC;QAE1C,kBAAO,CAAC,uBAAuB,CAAC,CAAC,EAAE,MAAM,CAAC,eAAe,CAAC,CAAC;QAC3D,KAAK,MAAM,EAAE,IAAI,CAAC,GAAG,MAAM,CAAC,iBAAiB,EAAE,CAAC,CAAC,KAAK,EAAE,CAAC,OAAO,EAAE,EAAE;YAChE,SAAS,CAAC,MAAM,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC;SAC3B;QAED,MAAM,uBAAuB,GAAG,CAAC,CAAC,SAAS,EAAE,CAAC;QAE9C,kBAAO,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;QACvB,kBAAO,CAAC,SAAS,CAAC,CAAC,EAAE,YAAY,CAAC,CAAC;QACnC,kBAAO,CAAC,UAAU,CAAC,CAAC,EAAE,yBAAe,CAAC,EAAE,CAAC,CAAC;QAC1C,kBAAO,CAAC,gBAAgB,CAAC,CAAC,EAAE,mBAAmB,CAAC,CAAC;QACjD,kBAAO,CAAC,eAAe,CAAC,CAAC,EAAE,uBAAuB,CAAC,CAAC;QACpD,kBAAO,CAAC,kBAAkB,CAAC,CAAC,EAAE,kBAAO,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC,CAAC;QAEpD,OAAO,CAAC,CAAC,YAAY,EAAE,CAAC;IAC5B,CAAC;IAID,IAAW,gBAAgB,KAAK,OAAO,IAAI,CAAC,cAAc,CAAC,MAAM,CAAC,CAAC,CAAC;IACpE,IAAW,eAAe,KAAK,OAAO,IAAI,CAAC,kBAAkB,CAAC,MAAM,CAAC,CAAC,CAAC;IAShE,CAAC,aAAa;QACjB,KAAK,IAAI,KAAK,EAAE,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,GAAG,IAAI,CAAC,gBAAgB,EAAE,EAAE,CAAC,GAAG,CAAC,GAAG;YACzD,IAAI,KAAK,GAAG,IAAI,CAAC,cAAc,CAAC,CAAC,CAAC,EAAE;gBAAE,MAAM,KAAK,CAAC;aAAE;SACvD;IACL,CAAC;IAEM,CAAC,iBAAiB;QACrB,KAAK,IAAI,KAAK,EAAE,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,GAAG,IAAI,CAAC,eAAe,EAAE,EAAE,CAAC,GAAG,CAAC,GAAG;YACxD,IAAI,KAAK,GAAG,IAAI,CAAC,kBAAkB,CAAC,CAAC,CAAC,EAAE;gBAAE,MAAM,KAAK,CAAC;aAAE;SAC3D;IACL,CAAC;IAEM,cAAc,CAAC,KAAa;QAC/B,OAAO,KAAK,IAAI,CAAC;eACV,KAAK,GAAG,IAAI,CAAC,gBAAgB;eAC7B,IAAI,CAAC,cAAc,CAAC,KAAK,CAAC,IAAI,IAAI,CAAC;IAC9C,CAAC;IAEM,kBAAkB,CAAC,KAAa;QACnC,OAAO,KAAK,IAAI,CAAC;eACV,KAAK,GAAG,IAAI,CAAC,eAAe;eAC5B,IAAI,CAAC,kBAAkB,CAAC,KAAK,CAAC,IAAI,IAAI,CAAC;IAClD,CAAC;CACJ;AAEmB,yBAAM;AAE1B,cAAc;AACd,MAAM,aAAc,SAAQ,OAAO;IAK/B,YAAY,MAAc,EAAY,OAAgB;QAClD,KAAK,CAAC,MAAM,EAAE,OAAO,CAAC,OAAO,EAAE,CAAC,CAAC;QADC,YAAO,GAAP,OAAO,CAAS;IAEtD,CAAC;IALD,IAAW,gBAAgB,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,mBAAmB,EAAE,CAAC,CAAC,CAAC;IAC5E,IAAW,eAAe,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,kBAAkB,EAAE,CAAC,CAAC,CAAC;IAMnE,cAAc,CAAC,KAAa;QAC/B,IAAI,KAAK,IAAI,CAAC,IAAI,KAAK,GAAG,IAAI,CAAC,gBAAgB,EAAE;YAC7C,MAAM,SAAS,GAAG,IAAI,CAAC,OAAO,CAAC,aAAa,CAAC,KAAK,CAAC,CAAC;YACpD,IAAI,SAAS,EAAE;gBAAE,OAAO,SAAS,CAAC,MAAM,CAAC,SAAS,CAAC,CAAC;aAAE;SACzD;QACD,OAAO,IAAI,CAAC;IAChB,CAAC;IAEM,kBAAkB,CAAC,KAAa;QACnC,IAAI,KAAK,IAAI,CAAC,IAAI,KAAK,GAAG,IAAI,CAAC,eAAe,EAAE;YAC5C,MAAM,SAAS,GAAG,IAAI,CAAC,OAAO,CAAC,YAAY,CAAC,KAAK,CAAC,CAAC;YACnD,IAAI,SAAS,EAAE;gBAAE,OAAO,SAAS,CAAC,MAAM,CAAC,SAAS,CAAC,CAAC;aAAE;SACzD;QACD,OAAO,IAAI,CAAC;IAChB,CAAC;CACJ;AAED,cAAc;AACd,MAAa,SAAS;IAmBlB,YAAY,cAAsB,EAAE,UAAyB,EAAE,MAAqB;QAChF,IAAI,CAAC,cAAc,GAAG,cAAc,CAAC;QACrC,IAAI,CAAC,MAAM,GAAG,OAAO,MAAM,KAAK,QAAQ,CAAC,CAAC,CAAC,MAAM,CAAC,CAAC,CAAC,MAAM,CAAC,GAAG,CAAC;QAC/D,IAAI,CAAC,UAAU,GAAG,OAAO,UAAU,KAAK,QAAQ,CAAC,CAAC,CAAC,UAAU,CAAC,CAAC,CAAC,UAAU,CAAC,GAAG,CAAC;IACnF,CAAC;IArBD,kBAAkB;IACX,MAAM,CAAC,MAAM,CAAC,KAAa;QAC9B,OAAO,IAAI,SAAS,CAAC,KAAK,CAAC,cAAc,EAAE,EAAE,KAAK,CAAC,UAAU,EAAE,EAAE,KAAK,CAAC,MAAM,EAAE,CAAC,CAAC;IACrF,CAAC;IAED,kBAAkB;IACX,MAAM,CAAC,MAAM,CAAC,CAAU,EAAE,SAAoB;QACjD,MAAM,EAAE,cAAc,EAAE,GAAG,SAAS,CAAC;QACrC,MAAM,MAAM,GAAG,IAAI,IAAI,CAAC,SAAS,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;QAC7C,MAAM,UAAU,GAAG,IAAI,IAAI,CAAC,SAAS,CAAC,UAAU,EAAE,CAAC,CAAC,CAAC;QACrD,OAAO,gBAAM,CAAC,WAAW,CAAC,CAAC,EAAE,MAAM,EAAE,cAAc,EAAE,UAAU,CAAC,CAAC;IACrE,CAAC;CAWJ;AAxBD,8BAwBC","file":"file.js","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/file.mjs b/igv_component/node_modules/apache-arrow/ipc/metadata/file.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..54fc3e55e499dd69cbb0b9d8cc6d6b01ef7c583b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/file.mjs
@@ -0,0 +1,139 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+/* eslint-disable @typescript-eslint/naming-convention */
+import { Block as _Block } from '../../fb/block.mjs';
+import { Footer as _Footer } from '../../fb/footer.mjs';
+import * as flatbuffers from 'flatbuffers';
+var Long = flatbuffers.Long;
+var Builder = flatbuffers.Builder;
+var ByteBuffer = flatbuffers.ByteBuffer;
+import { Schema } from '../../schema.mjs';
+import { MetadataVersion } from '../../enum.mjs';
+import { toUint8Array } from '../../util/buffer.mjs';
+/** @ignore */
+class Footer_ {
+    constructor(schema, version = MetadataVersion.V4, recordBatches, dictionaryBatches) {
+        this.schema = schema;
+        this.version = version;
+        recordBatches && (this._recordBatches = recordBatches);
+        dictionaryBatches && (this._dictionaryBatches = dictionaryBatches);
+    }
+    /** @nocollapse */
+    static decode(buf) {
+        buf = new ByteBuffer(toUint8Array(buf));
+        const footer = _Footer.getRootAsFooter(buf);
+        const schema = Schema.decode(footer.schema());
+        return new OffHeapFooter(schema, footer);
+    }
+    /** @nocollapse */
+    static encode(footer) {
+        const b = new Builder();
+        const schemaOffset = Schema.encode(b, footer.schema);
+        _Footer.startRecordBatchesVector(b, footer.numRecordBatches);
+        for (const rb of [...footer.recordBatches()].slice().reverse()) {
+            FileBlock.encode(b, rb);
+        }
+        const recordBatchesOffset = b.endVector();
+        _Footer.startDictionariesVector(b, footer.numDictionaries);
+        for (const db of [...footer.dictionaryBatches()].slice().reverse()) {
+            FileBlock.encode(b, db);
+        }
+        const dictionaryBatchesOffset = b.endVector();
+        _Footer.startFooter(b);
+        _Footer.addSchema(b, schemaOffset);
+        _Footer.addVersion(b, MetadataVersion.V4);
+        _Footer.addRecordBatches(b, recordBatchesOffset);
+        _Footer.addDictionaries(b, dictionaryBatchesOffset);
+        _Footer.finishFooterBuffer(b, _Footer.endFooter(b));
+        return b.asUint8Array();
+    }
+    get numRecordBatches() { return this._recordBatches.length; }
+    get numDictionaries() { return this._dictionaryBatches.length; }
+    *recordBatches() {
+        for (let block, i = -1, n = this.numRecordBatches; ++i < n;) {
+            if (block = this.getRecordBatch(i)) {
+                yield block;
+            }
+        }
+    }
+    *dictionaryBatches() {
+        for (let block, i = -1, n = this.numDictionaries; ++i < n;) {
+            if (block = this.getDictionaryBatch(i)) {
+                yield block;
+            }
+        }
+    }
+    getRecordBatch(index) {
+        return index >= 0
+            && index < this.numRecordBatches
+            && this._recordBatches[index] || null;
+    }
+    getDictionaryBatch(index) {
+        return index >= 0
+            && index < this.numDictionaries
+            && this._dictionaryBatches[index] || null;
+    }
+}
+export { Footer_ as Footer };
+/** @ignore */
+class OffHeapFooter extends Footer_ {
+    constructor(schema, _footer) {
+        super(schema, _footer.version());
+        this._footer = _footer;
+    }
+    get numRecordBatches() { return this._footer.recordBatchesLength(); }
+    get numDictionaries() { return this._footer.dictionariesLength(); }
+    getRecordBatch(index) {
+        if (index >= 0 && index < this.numRecordBatches) {
+            const fileBlock = this._footer.recordBatches(index);
+            if (fileBlock) {
+                return FileBlock.decode(fileBlock);
+            }
+        }
+        return null;
+    }
+    getDictionaryBatch(index) {
+        if (index >= 0 && index < this.numDictionaries) {
+            const fileBlock = this._footer.dictionaries(index);
+            if (fileBlock) {
+                return FileBlock.decode(fileBlock);
+            }
+        }
+        return null;
+    }
+}
+/** @ignore */
+export class FileBlock {
+    constructor(metaDataLength, bodyLength, offset) {
+        this.metaDataLength = metaDataLength;
+        this.offset = typeof offset === 'number' ? offset : offset.low;
+        this.bodyLength = typeof bodyLength === 'number' ? bodyLength : bodyLength.low;
+    }
+    /** @nocollapse */
+    static decode(block) {
+        return new FileBlock(block.metaDataLength(), block.bodyLength(), block.offset());
+    }
+    /** @nocollapse */
+    static encode(b, fileBlock) {
+        const { metaDataLength } = fileBlock;
+        const offset = new Long(fileBlock.offset, 0);
+        const bodyLength = new Long(fileBlock.bodyLength, 0);
+        return _Block.createBlock(b, offset, metaDataLength, bodyLength);
+    }
+}
+
+//# sourceMappingURL=file.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/file.mjs.map b/igv_component/node_modules/apache-arrow/ipc/metadata/file.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..6c81e3969a8b664b3fb58734e909ebd9235fb2be
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/file.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/json.d.ts b/igv_component/node_modules/apache-arrow/ipc/metadata/json.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6dc7b9265471be42cce3efb806160701ac195a7a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/json.d.ts
@@ -0,0 +1,11 @@
+import { Schema, Field } from '../../schema.js';
+import { DataType } from '../../type.js';
+import { DictionaryBatch, RecordBatch } from './message.js';
+/** @ignore */
+export declare function schemaFromJSON(_schema: any, dictionaries?: Map<number, DataType>): Schema<any>;
+/** @ignore */
+export declare function recordBatchFromJSON(b: any): RecordBatch;
+/** @ignore */
+export declare function dictionaryBatchFromJSON(b: any): DictionaryBatch;
+/** @ignore */
+export declare function fieldFromJSON(_field: any, dictionaries?: Map<number, DataType>): Field<any>;
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/json.d.ts.map b/igv_component/node_modules/apache-arrow/ipc/metadata/json.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..1512523041218c3b3cea7bb245a8725212aa5b94
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/json.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["ipc/metadata/json.ts"],"names":[],"mappings":"AAmBA,OAAO,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM,iBAAiB,CAAC;AAChD,OAAO,EACH,QAAQ,EAIX,MAAM,eAAe,CAAC;AAEvB,OAAO,EAAE,eAAe,EAAE,WAAW,EAA2B,MAAM,cAAc,CAAC;AAGrF,cAAc;AACd,wBAAgB,cAAc,CAAC,OAAO,EAAE,GAAG,EAAE,YAAY,GAAE,GAAG,CAAC,MAAM,EAAE,QAAQ,CAAa,eAM3F;AAED,cAAc;AACd,wBAAgB,mBAAmB,CAAC,CAAC,EAAE,GAAG,eAMzC;AAED,cAAc;AACd,wBAAgB,uBAAuB,CAAC,CAAC,EAAE,GAAG,mBAK7C;AA0CD,cAAc;AACd,wBAAgB,aAAa,CAAC,MAAM,EAAE,GAAG,EAAE,YAAY,CAAC,EAAE,GAAG,CAAC,MAAM,EAAE,QAAQ,CAAC,cAiC9E","file":"json.d.ts","sourceRoot":"../../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/json.js b/igv_component/node_modules/apache-arrow/ipc/metadata/json.js
new file mode 100644
index 0000000000000000000000000000000000000000..d6d74387916583bbe455ea9f37823d42c3dfa0f1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/json.js
@@ -0,0 +1,176 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.fieldFromJSON = exports.dictionaryBatchFromJSON = exports.recordBatchFromJSON = exports.schemaFromJSON = void 0;
+/* eslint-disable brace-style */
+const schema_js_1 = require("../../schema.js");
+const type_js_1 = require("../../type.js");
+const message_js_1 = require("./message.js");
+const enum_js_1 = require("../../enum.js");
+/** @ignore */
+function schemaFromJSON(_schema, dictionaries = new Map()) {
+    return new schema_js_1.Schema(schemaFieldsFromJSON(_schema, dictionaries), customMetadataFromJSON(_schema['customMetadata']), dictionaries);
+}
+exports.schemaFromJSON = schemaFromJSON;
+/** @ignore */
+function recordBatchFromJSON(b) {
+    return new message_js_1.RecordBatch(b['count'], fieldNodesFromJSON(b['columns']), buffersFromJSON(b['columns']));
+}
+exports.recordBatchFromJSON = recordBatchFromJSON;
+/** @ignore */
+function dictionaryBatchFromJSON(b) {
+    return new message_js_1.DictionaryBatch(recordBatchFromJSON(b['data']), b['id'], b['isDelta']);
+}
+exports.dictionaryBatchFromJSON = dictionaryBatchFromJSON;
+/** @ignore */
+function schemaFieldsFromJSON(_schema, dictionaries) {
+    return (_schema['fields'] || []).filter(Boolean).map((f) => schema_js_1.Field.fromJSON(f, dictionaries));
+}
+/** @ignore */
+function fieldChildrenFromJSON(_field, dictionaries) {
+    return (_field['children'] || []).filter(Boolean).map((f) => schema_js_1.Field.fromJSON(f, dictionaries));
+}
+/** @ignore */
+function fieldNodesFromJSON(xs) {
+    return (xs || []).reduce((fieldNodes, column) => [
+        ...fieldNodes,
+        new message_js_1.FieldNode(column['count'], nullCountFromJSON(column['VALIDITY'])),
+        ...fieldNodesFromJSON(column['children'])
+    ], []);
+}
+/** @ignore */
+function buffersFromJSON(xs, buffers = []) {
+    for (let i = -1, n = (xs || []).length; ++i < n;) {
+        const column = xs[i];
+        column['VALIDITY'] && buffers.push(new message_js_1.BufferRegion(buffers.length, column['VALIDITY'].length));
+        column['TYPE'] && buffers.push(new message_js_1.BufferRegion(buffers.length, column['TYPE'].length));
+        column['OFFSET'] && buffers.push(new message_js_1.BufferRegion(buffers.length, column['OFFSET'].length));
+        column['DATA'] && buffers.push(new message_js_1.BufferRegion(buffers.length, column['DATA'].length));
+        buffers = buffersFromJSON(column['children'], buffers);
+    }
+    return buffers;
+}
+/** @ignore */
+function nullCountFromJSON(validity) {
+    return (validity || []).reduce((sum, val) => sum + +(val === 0), 0);
+}
+/** @ignore */
+function fieldFromJSON(_field, dictionaries) {
+    let id;
+    let keys;
+    let field;
+    let dictMeta;
+    let type;
+    let dictType;
+    // If no dictionary encoding
+    if (!dictionaries || !(dictMeta = _field['dictionary'])) {
+        type = typeFromJSON(_field, fieldChildrenFromJSON(_field, dictionaries));
+        field = new schema_js_1.Field(_field['name'], type, _field['nullable'], customMetadataFromJSON(_field['customMetadata']));
+    }
+    // If dictionary encoded and the first time we've seen this dictionary id, decode
+    // the data type and child fields, then wrap in a Dictionary type and insert the
+    // data type into the dictionary types map.
+    else if (!dictionaries.has(id = dictMeta['id'])) {
+        // a dictionary index defaults to signed 32 bit int if unspecified
+        keys = (keys = dictMeta['indexType']) ? indexTypeFromJSON(keys) : new type_js_1.Int32();
+        dictionaries.set(id, type = typeFromJSON(_field, fieldChildrenFromJSON(_field, dictionaries)));
+        dictType = new type_js_1.Dictionary(type, keys, id, dictMeta['isOrdered']);
+        field = new schema_js_1.Field(_field['name'], dictType, _field['nullable'], customMetadataFromJSON(_field['customMetadata']));
+    }
+    // If dictionary encoded, and have already seen this dictionary Id in the schema, then reuse the
+    // data type and wrap in a new Dictionary type and field.
+    else {
+        // a dictionary index defaults to signed 32 bit int if unspecified
+        keys = (keys = dictMeta['indexType']) ? indexTypeFromJSON(keys) : new type_js_1.Int32();
+        dictType = new type_js_1.Dictionary(dictionaries.get(id), keys, id, dictMeta['isOrdered']);
+        field = new schema_js_1.Field(_field['name'], dictType, _field['nullable'], customMetadataFromJSON(_field['customMetadata']));
+    }
+    return field || null;
+}
+exports.fieldFromJSON = fieldFromJSON;
+/** @ignore */
+function customMetadataFromJSON(_metadata) {
+    return new Map(Object.entries(_metadata || {}));
+}
+/** @ignore */
+function indexTypeFromJSON(_type) {
+    return new type_js_1.Int(_type['isSigned'], _type['bitWidth']);
+}
+/** @ignore */
+function typeFromJSON(f, children) {
+    const typeId = f['type']['name'];
+    switch (typeId) {
+        case 'NONE': return new type_js_1.Null();
+        case 'null': return new type_js_1.Null();
+        case 'binary': return new type_js_1.Binary();
+        case 'utf8': return new type_js_1.Utf8();
+        case 'bool': return new type_js_1.Bool();
+        case 'list': return new type_js_1.List((children || [])[0]);
+        case 'struct': return new type_js_1.Struct(children || []);
+        case 'struct_': return new type_js_1.Struct(children || []);
+    }
+    switch (typeId) {
+        case 'int': {
+            const t = f['type'];
+            return new type_js_1.Int(t['isSigned'], t['bitWidth']);
+        }
+        case 'floatingpoint': {
+            const t = f['type'];
+            return new type_js_1.Float(enum_js_1.Precision[t['precision']]);
+        }
+        case 'decimal': {
+            const t = f['type'];
+            return new type_js_1.Decimal(t['scale'], t['precision'], t['bitWidth']);
+        }
+        case 'date': {
+            const t = f['type'];
+            return new type_js_1.Date_(enum_js_1.DateUnit[t['unit']]);
+        }
+        case 'time': {
+            const t = f['type'];
+            return new type_js_1.Time(enum_js_1.TimeUnit[t['unit']], t['bitWidth']);
+        }
+        case 'timestamp': {
+            const t = f['type'];
+            return new type_js_1.Timestamp(enum_js_1.TimeUnit[t['unit']], t['timezone']);
+        }
+        case 'interval': {
+            const t = f['type'];
+            return new type_js_1.Interval(enum_js_1.IntervalUnit[t['unit']]);
+        }
+        case 'union': {
+            const t = f['type'];
+            return new type_js_1.Union(enum_js_1.UnionMode[t['mode']], (t['typeIds'] || []), children || []);
+        }
+        case 'fixedsizebinary': {
+            const t = f['type'];
+            return new type_js_1.FixedSizeBinary(t['byteWidth']);
+        }
+        case 'fixedsizelist': {
+            const t = f['type'];
+            return new type_js_1.FixedSizeList(t['listSize'], (children || [])[0]);
+        }
+        case 'map': {
+            const t = f['type'];
+            return new type_js_1.Map_((children || [])[0], t['keysSorted']);
+        }
+    }
+    throw new Error(`Unrecognized type: "${typeId}"`);
+}
+
+//# sourceMappingURL=json.js.map
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/json.js.map b/igv_component/node_modules/apache-arrow/ipc/metadata/json.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..a8456369a83e22a0edded682b451a583d6693420
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/json.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/json.mjs b/igv_component/node_modules/apache-arrow/ipc/metadata/json.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..32db5fb704951b2548651426b83b0ae3574d3c8a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/json.mjs
@@ -0,0 +1,169 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+/* eslint-disable brace-style */
+import { Schema, Field } from '../../schema.mjs';
+import { Dictionary, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct, Union, Bool, Null, Int, Float, Date_, Time, Interval, Timestamp, Int32, } from '../../type.mjs';
+import { DictionaryBatch, RecordBatch, FieldNode, BufferRegion } from './message.mjs';
+import { TimeUnit, Precision, IntervalUnit, UnionMode, DateUnit } from '../../enum.mjs';
+/** @ignore */
+export function schemaFromJSON(_schema, dictionaries = new Map()) {
+    return new Schema(schemaFieldsFromJSON(_schema, dictionaries), customMetadataFromJSON(_schema['customMetadata']), dictionaries);
+}
+/** @ignore */
+export function recordBatchFromJSON(b) {
+    return new RecordBatch(b['count'], fieldNodesFromJSON(b['columns']), buffersFromJSON(b['columns']));
+}
+/** @ignore */
+export function dictionaryBatchFromJSON(b) {
+    return new DictionaryBatch(recordBatchFromJSON(b['data']), b['id'], b['isDelta']);
+}
+/** @ignore */
+function schemaFieldsFromJSON(_schema, dictionaries) {
+    return (_schema['fields'] || []).filter(Boolean).map((f) => Field.fromJSON(f, dictionaries));
+}
+/** @ignore */
+function fieldChildrenFromJSON(_field, dictionaries) {
+    return (_field['children'] || []).filter(Boolean).map((f) => Field.fromJSON(f, dictionaries));
+}
+/** @ignore */
+function fieldNodesFromJSON(xs) {
+    return (xs || []).reduce((fieldNodes, column) => [
+        ...fieldNodes,
+        new FieldNode(column['count'], nullCountFromJSON(column['VALIDITY'])),
+        ...fieldNodesFromJSON(column['children'])
+    ], []);
+}
+/** @ignore */
+function buffersFromJSON(xs, buffers = []) {
+    for (let i = -1, n = (xs || []).length; ++i < n;) {
+        const column = xs[i];
+        column['VALIDITY'] && buffers.push(new BufferRegion(buffers.length, column['VALIDITY'].length));
+        column['TYPE'] && buffers.push(new BufferRegion(buffers.length, column['TYPE'].length));
+        column['OFFSET'] && buffers.push(new BufferRegion(buffers.length, column['OFFSET'].length));
+        column['DATA'] && buffers.push(new BufferRegion(buffers.length, column['DATA'].length));
+        buffers = buffersFromJSON(column['children'], buffers);
+    }
+    return buffers;
+}
+/** @ignore */
+function nullCountFromJSON(validity) {
+    return (validity || []).reduce((sum, val) => sum + +(val === 0), 0);
+}
+/** @ignore */
+export function fieldFromJSON(_field, dictionaries) {
+    let id;
+    let keys;
+    let field;
+    let dictMeta;
+    let type;
+    let dictType;
+    // If no dictionary encoding
+    if (!dictionaries || !(dictMeta = _field['dictionary'])) {
+        type = typeFromJSON(_field, fieldChildrenFromJSON(_field, dictionaries));
+        field = new Field(_field['name'], type, _field['nullable'], customMetadataFromJSON(_field['customMetadata']));
+    }
+    // If dictionary encoded and the first time we've seen this dictionary id, decode
+    // the data type and child fields, then wrap in a Dictionary type and insert the
+    // data type into the dictionary types map.
+    else if (!dictionaries.has(id = dictMeta['id'])) {
+        // a dictionary index defaults to signed 32 bit int if unspecified
+        keys = (keys = dictMeta['indexType']) ? indexTypeFromJSON(keys) : new Int32();
+        dictionaries.set(id, type = typeFromJSON(_field, fieldChildrenFromJSON(_field, dictionaries)));
+        dictType = new Dictionary(type, keys, id, dictMeta['isOrdered']);
+        field = new Field(_field['name'], dictType, _field['nullable'], customMetadataFromJSON(_field['customMetadata']));
+    }
+    // If dictionary encoded, and have already seen this dictionary Id in the schema, then reuse the
+    // data type and wrap in a new Dictionary type and field.
+    else {
+        // a dictionary index defaults to signed 32 bit int if unspecified
+        keys = (keys = dictMeta['indexType']) ? indexTypeFromJSON(keys) : new Int32();
+        dictType = new Dictionary(dictionaries.get(id), keys, id, dictMeta['isOrdered']);
+        field = new Field(_field['name'], dictType, _field['nullable'], customMetadataFromJSON(_field['customMetadata']));
+    }
+    return field || null;
+}
+/** @ignore */
+function customMetadataFromJSON(_metadata) {
+    return new Map(Object.entries(_metadata || {}));
+}
+/** @ignore */
+function indexTypeFromJSON(_type) {
+    return new Int(_type['isSigned'], _type['bitWidth']);
+}
+/** @ignore */
+function typeFromJSON(f, children) {
+    const typeId = f['type']['name'];
+    switch (typeId) {
+        case 'NONE': return new Null();
+        case 'null': return new Null();
+        case 'binary': return new Binary();
+        case 'utf8': return new Utf8();
+        case 'bool': return new Bool();
+        case 'list': return new List((children || [])[0]);
+        case 'struct': return new Struct(children || []);
+        case 'struct_': return new Struct(children || []);
+    }
+    switch (typeId) {
+        case 'int': {
+            const t = f['type'];
+            return new Int(t['isSigned'], t['bitWidth']);
+        }
+        case 'floatingpoint': {
+            const t = f['type'];
+            return new Float(Precision[t['precision']]);
+        }
+        case 'decimal': {
+            const t = f['type'];
+            return new Decimal(t['scale'], t['precision'], t['bitWidth']);
+        }
+        case 'date': {
+            const t = f['type'];
+            return new Date_(DateUnit[t['unit']]);
+        }
+        case 'time': {
+            const t = f['type'];
+            return new Time(TimeUnit[t['unit']], t['bitWidth']);
+        }
+        case 'timestamp': {
+            const t = f['type'];
+            return new Timestamp(TimeUnit[t['unit']], t['timezone']);
+        }
+        case 'interval': {
+            const t = f['type'];
+            return new Interval(IntervalUnit[t['unit']]);
+        }
+        case 'union': {
+            const t = f['type'];
+            return new Union(UnionMode[t['mode']], (t['typeIds'] || []), children || []);
+        }
+        case 'fixedsizebinary': {
+            const t = f['type'];
+            return new FixedSizeBinary(t['byteWidth']);
+        }
+        case 'fixedsizelist': {
+            const t = f['type'];
+            return new FixedSizeList(t['listSize'], (children || [])[0]);
+        }
+        case 'map': {
+            const t = f['type'];
+            return new Map_((children || [])[0], t['keysSorted']);
+        }
+    }
+    throw new Error(`Unrecognized type: "${typeId}"`);
+}
+
+//# sourceMappingURL=json.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/json.mjs.map b/igv_component/node_modules/apache-arrow/ipc/metadata/json.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..7da10de34e92334429f089a74fcea251b00f305f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/json.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/message.d.ts b/igv_component/node_modules/apache-arrow/ipc/metadata/message.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a936e35c0c5081a35b02d02afcfc4fa3ec7e1f65
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/message.d.ts
@@ -0,0 +1,148 @@
+import * as flatbuffers from 'flatbuffers';
+import { Schema as _Schema } from '../../fb/schema.js';
+import { RecordBatch as _RecordBatch } from '../../fb/record-batch.js';
+import { DictionaryBatch as _DictionaryBatch } from '../../fb/dictionary-batch.js';
+import { Buffer as _Buffer } from '../../fb/buffer.js';
+import { Field as _Field } from '../../fb/field.js';
+import { FieldNode as _FieldNode } from '../../fb/field-node.js';
+import { Schema, Field } from '../../schema.js';
+import { ArrayBufferViewInput } from '../../util/buffer.js';
+import { MessageHeader, MetadataVersion } from '../../enum.js';
+import { fieldFromJSON, schemaFromJSON, recordBatchFromJSON, dictionaryBatchFromJSON } from './json.js';
+import Long = flatbuffers.Long;
+import Builder = flatbuffers.Builder;
+import { DataType } from '../../type.js';
+/**
+ * @ignore
+ * @private
+ **/
+export declare class Message<T extends MessageHeader = any> {
+    /** @nocollapse */
+    static fromJSON<T extends MessageHeader>(msg: any, headerType: T): Message<T>;
+    /** @nocollapse */
+    static decode(buf: ArrayBufferViewInput): Message<MessageHeader>;
+    /** @nocollapse */
+    static encode<T extends MessageHeader>(message: Message<T>): Uint8Array;
+    /** @nocollapse */
+    static from(header: Schema | RecordBatch | DictionaryBatch, bodyLength?: number): Message<MessageHeader.Schema> | Message<MessageHeader.RecordBatch> | Message<MessageHeader.DictionaryBatch>;
+    body: Uint8Array;
+    protected _headerType: T;
+    protected _bodyLength: number;
+    protected _version: MetadataVersion;
+    get type(): T;
+    get version(): MetadataVersion;
+    get headerType(): T;
+    get bodyLength(): number;
+    protected _createHeader: MessageHeaderDecoder;
+    header(): T extends MessageHeader.Schema ? Schema<any> : T extends MessageHeader.RecordBatch ? RecordBatch : T extends MessageHeader.DictionaryBatch ? DictionaryBatch : never;
+    isSchema(): this is Message<MessageHeader.Schema>;
+    isRecordBatch(): this is Message<MessageHeader.RecordBatch>;
+    isDictionaryBatch(): this is Message<MessageHeader.DictionaryBatch>;
+    constructor(bodyLength: Long | number, version: MetadataVersion, headerType: T, header?: any);
+}
+/**
+ * @ignore
+ * @private
+ **/
+export declare class RecordBatch {
+    protected _length: number;
+    protected _nodes: FieldNode[];
+    protected _buffers: BufferRegion[];
+    get nodes(): FieldNode[];
+    get length(): number;
+    get buffers(): BufferRegion[];
+    constructor(length: Long | number, nodes: FieldNode[], buffers: BufferRegion[]);
+}
+/**
+ * @ignore
+ * @private
+ **/
+export declare class DictionaryBatch {
+    protected _id: number;
+    protected _isDelta: boolean;
+    protected _data: RecordBatch;
+    get id(): number;
+    get data(): RecordBatch;
+    get isDelta(): boolean;
+    get length(): number;
+    get nodes(): FieldNode[];
+    get buffers(): BufferRegion[];
+    constructor(data: RecordBatch, id: Long | number, isDelta?: boolean);
+}
+/**
+ * @ignore
+ * @private
+ **/
+export declare class BufferRegion {
+    offset: number;
+    length: number;
+    constructor(offset: Long | number, length: Long | number);
+}
+/**
+ * @ignore
+ * @private
+ **/
+export declare class FieldNode {
+    length: number;
+    nullCount: number;
+    constructor(length: Long | number, nullCount: Long | number);
+}
+declare module '../../schema' {
+    namespace Field {
+        export { encodeField as encode };
+        export { decodeField as decode };
+        export { fieldFromJSON as fromJSON };
+    }
+    namespace Schema {
+        export { encodeSchema as encode };
+        export { decodeSchema as decode };
+        export { schemaFromJSON as fromJSON };
+    }
+}
+declare module './message' {
+    namespace RecordBatch {
+        export { encodeRecordBatch as encode };
+        export { decodeRecordBatch as decode };
+        export { recordBatchFromJSON as fromJSON };
+    }
+    namespace DictionaryBatch {
+        export { encodeDictionaryBatch as encode };
+        export { decodeDictionaryBatch as decode };
+        export { dictionaryBatchFromJSON as fromJSON };
+    }
+    namespace FieldNode {
+        export { encodeFieldNode as encode };
+        export { decodeFieldNode as decode };
+    }
+    namespace BufferRegion {
+        export { encodeBufferRegion as encode };
+        export { decodeBufferRegion as decode };
+    }
+}
+/** @ignore */
+declare function decodeSchema(_schema: _Schema, dictionaries?: Map<number, DataType>): Schema<any>;
+/** @ignore */
+declare function decodeRecordBatch(batch: _RecordBatch, version?: MetadataVersion): RecordBatch;
+/** @ignore */
+declare function decodeDictionaryBatch(batch: _DictionaryBatch, version?: MetadataVersion): DictionaryBatch;
+/** @ignore */
+declare function decodeBufferRegion(b: _Buffer): BufferRegion;
+/** @ignore */
+declare function decodeFieldNode(f: _FieldNode): FieldNode;
+/** @ignore */
+declare function decodeField(f: _Field, dictionaries?: Map<number, DataType>): Field<any>;
+/** @ignore */
+declare function encodeSchema(b: Builder, schema: Schema): number;
+/** @ignore */
+declare function encodeField(b: Builder, field: Field): number;
+/** @ignore */
+declare function encodeRecordBatch(b: Builder, recordBatch: RecordBatch): number;
+/** @ignore */
+declare function encodeDictionaryBatch(b: Builder, dictionaryBatch: DictionaryBatch): number;
+/** @ignore */
+declare function encodeFieldNode(b: Builder, node: FieldNode): number;
+/** @ignore */
+declare function encodeBufferRegion(b: Builder, node: BufferRegion): number;
+/** @ignore */
+declare type MessageHeaderDecoder = <T extends MessageHeader>() => T extends MessageHeader.Schema ? Schema : T extends MessageHeader.RecordBatch ? RecordBatch : T extends MessageHeader.DictionaryBatch ? DictionaryBatch : never;
+export {};
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/message.d.ts.map b/igv_component/node_modules/apache-arrow/ipc/metadata/message.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..b6e03822500a9941fa04f47fc527776c1c7280d8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/message.d.ts.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/message.js b/igv_component/node_modules/apache-arrow/ipc/metadata/message.js
new file mode 100644
index 0000000000000000000000000000000000000000..34215f2ef9ce84b94a029f320962527b4cc7e652
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/message.js
@@ -0,0 +1,508 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.FieldNode = exports.BufferRegion = exports.DictionaryBatch = exports.RecordBatch = exports.Message = void 0;
+const tslib_1 = require("tslib");
+/* eslint-disable brace-style */
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+const schema_js_1 = require("../../fb/schema.js");
+const int_js_1 = require("../../fb/int.js");
+const record_batch_js_1 = require("../../fb/record-batch.js");
+const dictionary_batch_js_1 = require("../../fb/dictionary-batch.js");
+const buffer_js_1 = require("../../fb/buffer.js");
+const field_js_1 = require("../../fb/field.js");
+const field_node_js_1 = require("../../fb/field-node.js");
+const type_js_1 = require("../../fb/type.js");
+const key_value_js_1 = require("../../fb/key-value.js");
+const endianness_js_1 = require("../../fb/endianness.js");
+const floating_point_js_1 = require("../../fb/floating-point.js");
+const decimal_js_1 = require("../../fb/decimal.js");
+const date_js_1 = require("../../fb/date.js");
+const time_js_1 = require("../../fb/time.js");
+const timestamp_js_1 = require("../../fb/timestamp.js");
+const interval_js_1 = require("../../fb/interval.js");
+const union_js_1 = require("../../fb/union.js");
+const fixed_size_binary_js_1 = require("../../fb/fixed-size-binary.js");
+const fixed_size_list_js_1 = require("../../fb/fixed-size-list.js");
+const map_js_1 = require("../../fb/map.js");
+const message_js_1 = require("../../fb/message.js");
+const schema_js_2 = require("../../schema.js");
+const buffer_js_2 = require("../../util/buffer.js");
+const enum_js_1 = require("../../enum.js");
+const typeassembler_js_1 = require("../../visitor/typeassembler.js");
+const json_js_1 = require("./json.js");
+var Long = flatbuffers.Long;
+var Builder = flatbuffers.Builder;
+var ByteBuffer = flatbuffers.ByteBuffer;
+const type_js_2 = require("../../type.js");
+/**
+ * @ignore
+ * @private
+ **/
+class Message {
+    constructor(bodyLength, version, headerType, header) {
+        this._version = version;
+        this._headerType = headerType;
+        this.body = new Uint8Array(0);
+        header && (this._createHeader = () => header);
+        this._bodyLength = typeof bodyLength === 'number' ? bodyLength : bodyLength.low;
+    }
+    /** @nocollapse */
+    static fromJSON(msg, headerType) {
+        const message = new Message(0, enum_js_1.MetadataVersion.V4, headerType);
+        message._createHeader = messageHeaderFromJSON(msg, headerType);
+        return message;
+    }
+    /** @nocollapse */
+    static decode(buf) {
+        buf = new ByteBuffer((0, buffer_js_2.toUint8Array)(buf));
+        const _message = message_js_1.Message.getRootAsMessage(buf);
+        const bodyLength = _message.bodyLength();
+        const version = _message.version();
+        const headerType = _message.headerType();
+        const message = new Message(bodyLength, version, headerType);
+        message._createHeader = decodeMessageHeader(_message, headerType);
+        return message;
+    }
+    /** @nocollapse */
+    static encode(message) {
+        const b = new Builder();
+        let headerOffset = -1;
+        if (message.isSchema()) {
+            headerOffset = schema_js_2.Schema.encode(b, message.header());
+        }
+        else if (message.isRecordBatch()) {
+            headerOffset = RecordBatch.encode(b, message.header());
+        }
+        else if (message.isDictionaryBatch()) {
+            headerOffset = DictionaryBatch.encode(b, message.header());
+        }
+        message_js_1.Message.startMessage(b);
+        message_js_1.Message.addVersion(b, enum_js_1.MetadataVersion.V4);
+        message_js_1.Message.addHeader(b, headerOffset);
+        message_js_1.Message.addHeaderType(b, message.headerType);
+        message_js_1.Message.addBodyLength(b, new Long(message.bodyLength, 0));
+        message_js_1.Message.finishMessageBuffer(b, message_js_1.Message.endMessage(b));
+        return b.asUint8Array();
+    }
+    /** @nocollapse */
+    static from(header, bodyLength = 0) {
+        if (header instanceof schema_js_2.Schema) {
+            return new Message(0, enum_js_1.MetadataVersion.V4, enum_js_1.MessageHeader.Schema, header);
+        }
+        if (header instanceof RecordBatch) {
+            return new Message(bodyLength, enum_js_1.MetadataVersion.V4, enum_js_1.MessageHeader.RecordBatch, header);
+        }
+        if (header instanceof DictionaryBatch) {
+            return new Message(bodyLength, enum_js_1.MetadataVersion.V4, enum_js_1.MessageHeader.DictionaryBatch, header);
+        }
+        throw new Error(`Unrecognized Message header: ${header}`);
+    }
+    get type() { return this.headerType; }
+    get version() { return this._version; }
+    get headerType() { return this._headerType; }
+    get bodyLength() { return this._bodyLength; }
+    header() { return this._createHeader(); }
+    isSchema() { return this.headerType === enum_js_1.MessageHeader.Schema; }
+    isRecordBatch() { return this.headerType === enum_js_1.MessageHeader.RecordBatch; }
+    isDictionaryBatch() { return this.headerType === enum_js_1.MessageHeader.DictionaryBatch; }
+}
+exports.Message = Message;
+/**
+ * @ignore
+ * @private
+ **/
+class RecordBatch {
+    constructor(length, nodes, buffers) {
+        this._nodes = nodes;
+        this._buffers = buffers;
+        this._length = typeof length === 'number' ? length : length.low;
+    }
+    get nodes() { return this._nodes; }
+    get length() { return this._length; }
+    get buffers() { return this._buffers; }
+}
+exports.RecordBatch = RecordBatch;
+/**
+ * @ignore
+ * @private
+ **/
+class DictionaryBatch {
+    constructor(data, id, isDelta = false) {
+        this._data = data;
+        this._isDelta = isDelta;
+        this._id = typeof id === 'number' ? id : id.low;
+    }
+    get id() { return this._id; }
+    get data() { return this._data; }
+    get isDelta() { return this._isDelta; }
+    get length() { return this.data.length; }
+    get nodes() { return this.data.nodes; }
+    get buffers() { return this.data.buffers; }
+}
+exports.DictionaryBatch = DictionaryBatch;
+/**
+ * @ignore
+ * @private
+ **/
+class BufferRegion {
+    constructor(offset, length) {
+        this.offset = typeof offset === 'number' ? offset : offset.low;
+        this.length = typeof length === 'number' ? length : length.low;
+    }
+}
+exports.BufferRegion = BufferRegion;
+/**
+ * @ignore
+ * @private
+ **/
+class FieldNode {
+    constructor(length, nullCount) {
+        this.length = typeof length === 'number' ? length : length.low;
+        this.nullCount = typeof nullCount === 'number' ? nullCount : nullCount.low;
+    }
+}
+exports.FieldNode = FieldNode;
+/** @ignore */
+function messageHeaderFromJSON(message, type) {
+    return (() => {
+        switch (type) {
+            case enum_js_1.MessageHeader.Schema: return schema_js_2.Schema.fromJSON(message);
+            case enum_js_1.MessageHeader.RecordBatch: return RecordBatch.fromJSON(message);
+            case enum_js_1.MessageHeader.DictionaryBatch: return DictionaryBatch.fromJSON(message);
+        }
+        throw new Error(`Unrecognized Message type: { name: ${enum_js_1.MessageHeader[type]}, type: ${type} }`);
+    });
+}
+/** @ignore */
+function decodeMessageHeader(message, type) {
+    return (() => {
+        switch (type) {
+            case enum_js_1.MessageHeader.Schema: return schema_js_2.Schema.decode(message.header(new schema_js_1.Schema()));
+            case enum_js_1.MessageHeader.RecordBatch: return RecordBatch.decode(message.header(new record_batch_js_1.RecordBatch()), message.version());
+            case enum_js_1.MessageHeader.DictionaryBatch: return DictionaryBatch.decode(message.header(new dictionary_batch_js_1.DictionaryBatch()), message.version());
+        }
+        throw new Error(`Unrecognized Message type: { name: ${enum_js_1.MessageHeader[type]}, type: ${type} }`);
+    });
+}
+schema_js_2.Field['encode'] = encodeField;
+schema_js_2.Field['decode'] = decodeField;
+schema_js_2.Field['fromJSON'] = json_js_1.fieldFromJSON;
+schema_js_2.Schema['encode'] = encodeSchema;
+schema_js_2.Schema['decode'] = decodeSchema;
+schema_js_2.Schema['fromJSON'] = json_js_1.schemaFromJSON;
+RecordBatch['encode'] = encodeRecordBatch;
+RecordBatch['decode'] = decodeRecordBatch;
+RecordBatch['fromJSON'] = json_js_1.recordBatchFromJSON;
+DictionaryBatch['encode'] = encodeDictionaryBatch;
+DictionaryBatch['decode'] = decodeDictionaryBatch;
+DictionaryBatch['fromJSON'] = json_js_1.dictionaryBatchFromJSON;
+FieldNode['encode'] = encodeFieldNode;
+FieldNode['decode'] = decodeFieldNode;
+BufferRegion['encode'] = encodeBufferRegion;
+BufferRegion['decode'] = decodeBufferRegion;
+/** @ignore */
+function decodeSchema(_schema, dictionaries = new Map()) {
+    const fields = decodeSchemaFields(_schema, dictionaries);
+    return new schema_js_2.Schema(fields, decodeCustomMetadata(_schema), dictionaries);
+}
+/** @ignore */
+function decodeRecordBatch(batch, version = enum_js_1.MetadataVersion.V4) {
+    if (batch.compression() !== null) {
+        throw new Error('Record batch compression not implemented');
+    }
+    return new RecordBatch(batch.length(), decodeFieldNodes(batch), decodeBuffers(batch, version));
+}
+/** @ignore */
+function decodeDictionaryBatch(batch, version = enum_js_1.MetadataVersion.V4) {
+    return new DictionaryBatch(RecordBatch.decode(batch.data(), version), batch.id(), batch.isDelta());
+}
+/** @ignore */
+function decodeBufferRegion(b) {
+    return new BufferRegion(b.offset(), b.length());
+}
+/** @ignore */
+function decodeFieldNode(f) {
+    return new FieldNode(f.length(), f.nullCount());
+}
+/** @ignore */
+function decodeFieldNodes(batch) {
+    const nodes = [];
+    for (let f, i = -1, j = -1, n = batch.nodesLength(); ++i < n;) {
+        if (f = batch.nodes(i)) {
+            nodes[++j] = FieldNode.decode(f);
+        }
+    }
+    return nodes;
+}
+/** @ignore */
+function decodeBuffers(batch, version) {
+    const bufferRegions = [];
+    for (let b, i = -1, j = -1, n = batch.buffersLength(); ++i < n;) {
+        if (b = batch.buffers(i)) {
+            // If this Arrow buffer was written before version 4,
+            // advance the buffer's bb_pos 8 bytes to skip past
+            // the now-removed page_id field
+            if (version < enum_js_1.MetadataVersion.V4) {
+                b.bb_pos += (8 * (i + 1));
+            }
+            bufferRegions[++j] = BufferRegion.decode(b);
+        }
+    }
+    return bufferRegions;
+}
+/** @ignore */
+function decodeSchemaFields(schema, dictionaries) {
+    const fields = [];
+    for (let f, i = -1, j = -1, n = schema.fieldsLength(); ++i < n;) {
+        if (f = schema.fields(i)) {
+            fields[++j] = schema_js_2.Field.decode(f, dictionaries);
+        }
+    }
+    return fields;
+}
+/** @ignore */
+function decodeFieldChildren(field, dictionaries) {
+    const children = [];
+    for (let f, i = -1, j = -1, n = field.childrenLength(); ++i < n;) {
+        if (f = field.children(i)) {
+            children[++j] = schema_js_2.Field.decode(f, dictionaries);
+        }
+    }
+    return children;
+}
+/** @ignore */
+function decodeField(f, dictionaries) {
+    let id;
+    let field;
+    let type;
+    let keys;
+    let dictType;
+    let dictMeta;
+    // If no dictionary encoding
+    if (!dictionaries || !(dictMeta = f.dictionary())) {
+        type = decodeFieldType(f, decodeFieldChildren(f, dictionaries));
+        field = new schema_js_2.Field(f.name(), type, f.nullable(), decodeCustomMetadata(f));
+    }
+    // If dictionary encoded and the first time we've seen this dictionary id, decode
+    // the data type and child fields, then wrap in a Dictionary type and insert the
+    // data type into the dictionary types map.
+    else if (!dictionaries.has(id = dictMeta.id().low)) {
+        // a dictionary index defaults to signed 32 bit int if unspecified
+        keys = (keys = dictMeta.indexType()) ? decodeIndexType(keys) : new type_js_2.Int32();
+        dictionaries.set(id, type = decodeFieldType(f, decodeFieldChildren(f, dictionaries)));
+        dictType = new type_js_2.Dictionary(type, keys, id, dictMeta.isOrdered());
+        field = new schema_js_2.Field(f.name(), dictType, f.nullable(), decodeCustomMetadata(f));
+    }
+    // If dictionary encoded, and have already seen this dictionary Id in the schema, then reuse the
+    // data type and wrap in a new Dictionary type and field.
+    else {
+        // a dictionary index defaults to signed 32 bit int if unspecified
+        keys = (keys = dictMeta.indexType()) ? decodeIndexType(keys) : new type_js_2.Int32();
+        dictType = new type_js_2.Dictionary(dictionaries.get(id), keys, id, dictMeta.isOrdered());
+        field = new schema_js_2.Field(f.name(), dictType, f.nullable(), decodeCustomMetadata(f));
+    }
+    return field || null;
+}
+/** @ignore */
+function decodeCustomMetadata(parent) {
+    const data = new Map();
+    if (parent) {
+        for (let entry, key, i = -1, n = Math.trunc(parent.customMetadataLength()); ++i < n;) {
+            if ((entry = parent.customMetadata(i)) && (key = entry.key()) != null) {
+                data.set(key, entry.value());
+            }
+        }
+    }
+    return data;
+}
+/** @ignore */
+function decodeIndexType(_type) {
+    return new type_js_2.Int(_type.isSigned(), _type.bitWidth());
+}
+/** @ignore */
+function decodeFieldType(f, children) {
+    const typeId = f.typeType();
+    switch (typeId) {
+        case type_js_1.Type['NONE']: return new type_js_2.Null();
+        case type_js_1.Type['Null']: return new type_js_2.Null();
+        case type_js_1.Type['Binary']: return new type_js_2.Binary();
+        case type_js_1.Type['Utf8']: return new type_js_2.Utf8();
+        case type_js_1.Type['Bool']: return new type_js_2.Bool();
+        case type_js_1.Type['List']: return new type_js_2.List((children || [])[0]);
+        case type_js_1.Type['Struct_']: return new type_js_2.Struct(children || []);
+    }
+    switch (typeId) {
+        case type_js_1.Type['Int']: {
+            const t = f.type(new int_js_1.Int());
+            return new type_js_2.Int(t.isSigned(), t.bitWidth());
+        }
+        case type_js_1.Type['FloatingPoint']: {
+            const t = f.type(new floating_point_js_1.FloatingPoint());
+            return new type_js_2.Float(t.precision());
+        }
+        case type_js_1.Type['Decimal']: {
+            const t = f.type(new decimal_js_1.Decimal());
+            return new type_js_2.Decimal(t.scale(), t.precision(), t.bitWidth());
+        }
+        case type_js_1.Type['Date']: {
+            const t = f.type(new date_js_1.Date());
+            return new type_js_2.Date_(t.unit());
+        }
+        case type_js_1.Type['Time']: {
+            const t = f.type(new time_js_1.Time());
+            return new type_js_2.Time(t.unit(), t.bitWidth());
+        }
+        case type_js_1.Type['Timestamp']: {
+            const t = f.type(new timestamp_js_1.Timestamp());
+            return new type_js_2.Timestamp(t.unit(), t.timezone());
+        }
+        case type_js_1.Type['Interval']: {
+            const t = f.type(new interval_js_1.Interval());
+            return new type_js_2.Interval(t.unit());
+        }
+        case type_js_1.Type['Union']: {
+            const t = f.type(new union_js_1.Union());
+            return new type_js_2.Union(t.mode(), t.typeIdsArray() || [], children || []);
+        }
+        case type_js_1.Type['FixedSizeBinary']: {
+            const t = f.type(new fixed_size_binary_js_1.FixedSizeBinary());
+            return new type_js_2.FixedSizeBinary(t.byteWidth());
+        }
+        case type_js_1.Type['FixedSizeList']: {
+            const t = f.type(new fixed_size_list_js_1.FixedSizeList());
+            return new type_js_2.FixedSizeList(t.listSize(), (children || [])[0]);
+        }
+        case type_js_1.Type['Map']: {
+            const t = f.type(new map_js_1.Map());
+            return new type_js_2.Map_((children || [])[0], t.keysSorted());
+        }
+    }
+    throw new Error(`Unrecognized type: "${type_js_1.Type[typeId]}" (${typeId})`);
+}
+/** @ignore */
+function encodeSchema(b, schema) {
+    const fieldOffsets = schema.fields.map((f) => schema_js_2.Field.encode(b, f));
+    schema_js_1.Schema.startFieldsVector(b, fieldOffsets.length);
+    const fieldsVectorOffset = schema_js_1.Schema.createFieldsVector(b, fieldOffsets);
+    const metadataOffset = !(schema.metadata && schema.metadata.size > 0) ? -1 :
+        schema_js_1.Schema.createCustomMetadataVector(b, [...schema.metadata].map(([k, v]) => {
+            const key = b.createString(`${k}`);
+            const val = b.createString(`${v}`);
+            key_value_js_1.KeyValue.startKeyValue(b);
+            key_value_js_1.KeyValue.addKey(b, key);
+            key_value_js_1.KeyValue.addValue(b, val);
+            return key_value_js_1.KeyValue.endKeyValue(b);
+        }));
+    schema_js_1.Schema.startSchema(b);
+    schema_js_1.Schema.addFields(b, fieldsVectorOffset);
+    schema_js_1.Schema.addEndianness(b, platformIsLittleEndian ? endianness_js_1.Endianness.Little : endianness_js_1.Endianness.Big);
+    if (metadataOffset !== -1) {
+        schema_js_1.Schema.addCustomMetadata(b, metadataOffset);
+    }
+    return schema_js_1.Schema.endSchema(b);
+}
+/** @ignore */
+function encodeField(b, field) {
+    let nameOffset = -1;
+    let typeOffset = -1;
+    let dictionaryOffset = -1;
+    const type = field.type;
+    let typeId = field.typeId;
+    if (!type_js_2.DataType.isDictionary(type)) {
+        typeOffset = typeassembler_js_1.instance.visit(type, b);
+    }
+    else {
+        typeId = type.dictionary.typeId;
+        dictionaryOffset = typeassembler_js_1.instance.visit(type, b);
+        typeOffset = typeassembler_js_1.instance.visit(type.dictionary, b);
+    }
+    const childOffsets = (type.children || []).map((f) => schema_js_2.Field.encode(b, f));
+    const childrenVectorOffset = field_js_1.Field.createChildrenVector(b, childOffsets);
+    const metadataOffset = !(field.metadata && field.metadata.size > 0) ? -1 :
+        field_js_1.Field.createCustomMetadataVector(b, [...field.metadata].map(([k, v]) => {
+            const key = b.createString(`${k}`);
+            const val = b.createString(`${v}`);
+            key_value_js_1.KeyValue.startKeyValue(b);
+            key_value_js_1.KeyValue.addKey(b, key);
+            key_value_js_1.KeyValue.addValue(b, val);
+            return key_value_js_1.KeyValue.endKeyValue(b);
+        }));
+    if (field.name) {
+        nameOffset = b.createString(field.name);
+    }
+    field_js_1.Field.startField(b);
+    field_js_1.Field.addType(b, typeOffset);
+    field_js_1.Field.addTypeType(b, typeId);
+    field_js_1.Field.addChildren(b, childrenVectorOffset);
+    field_js_1.Field.addNullable(b, !!field.nullable);
+    if (nameOffset !== -1) {
+        field_js_1.Field.addName(b, nameOffset);
+    }
+    if (dictionaryOffset !== -1) {
+        field_js_1.Field.addDictionary(b, dictionaryOffset);
+    }
+    if (metadataOffset !== -1) {
+        field_js_1.Field.addCustomMetadata(b, metadataOffset);
+    }
+    return field_js_1.Field.endField(b);
+}
+/** @ignore */
+function encodeRecordBatch(b, recordBatch) {
+    const nodes = recordBatch.nodes || [];
+    const buffers = recordBatch.buffers || [];
+    record_batch_js_1.RecordBatch.startNodesVector(b, nodes.length);
+    for (const n of nodes.slice().reverse())
+        FieldNode.encode(b, n);
+    const nodesVectorOffset = b.endVector();
+    record_batch_js_1.RecordBatch.startBuffersVector(b, buffers.length);
+    for (const b_ of buffers.slice().reverse())
+        BufferRegion.encode(b, b_);
+    const buffersVectorOffset = b.endVector();
+    record_batch_js_1.RecordBatch.startRecordBatch(b);
+    record_batch_js_1.RecordBatch.addLength(b, new Long(recordBatch.length, 0));
+    record_batch_js_1.RecordBatch.addNodes(b, nodesVectorOffset);
+    record_batch_js_1.RecordBatch.addBuffers(b, buffersVectorOffset);
+    return record_batch_js_1.RecordBatch.endRecordBatch(b);
+}
+/** @ignore */
+function encodeDictionaryBatch(b, dictionaryBatch) {
+    const dataOffset = RecordBatch.encode(b, dictionaryBatch.data);
+    dictionary_batch_js_1.DictionaryBatch.startDictionaryBatch(b);
+    dictionary_batch_js_1.DictionaryBatch.addId(b, new Long(dictionaryBatch.id, 0));
+    dictionary_batch_js_1.DictionaryBatch.addIsDelta(b, dictionaryBatch.isDelta);
+    dictionary_batch_js_1.DictionaryBatch.addData(b, dataOffset);
+    return dictionary_batch_js_1.DictionaryBatch.endDictionaryBatch(b);
+}
+/** @ignore */
+function encodeFieldNode(b, node) {
+    return field_node_js_1.FieldNode.createFieldNode(b, new Long(node.length, 0), new Long(node.nullCount, 0));
+}
+/** @ignore */
+function encodeBufferRegion(b, node) {
+    return buffer_js_1.Buffer.createBuffer(b, new Long(node.offset, 0), new Long(node.length, 0));
+}
+/** @ignore */
+const platformIsLittleEndian = (() => {
+    const buffer = new ArrayBuffer(2);
+    new DataView(buffer).setInt16(0, 256, true /* littleEndian */);
+    // Int16Array uses the platform's endianness.
+    return new Int16Array(buffer)[0] === 256;
+})();
+
+//# sourceMappingURL=message.js.map
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/message.js.map b/igv_component/node_modules/apache-arrow/ipc/metadata/message.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..30d16c8d1861f53e0787d4711f949a96f2bf4554
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/message.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/message.mjs b/igv_component/node_modules/apache-arrow/ipc/metadata/message.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..c800280f75475d628b9cd60afb801f61a7ec69bf
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/message.mjs
@@ -0,0 +1,499 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+/* eslint-disable brace-style */
+import * as flatbuffers from 'flatbuffers';
+import { Schema as _Schema } from '../../fb/schema.mjs';
+import { Int as _Int } from '../../fb/int.mjs';
+import { RecordBatch as _RecordBatch } from '../../fb/record-batch.mjs';
+import { DictionaryBatch as _DictionaryBatch } from '../../fb/dictionary-batch.mjs';
+import { Buffer as _Buffer } from '../../fb/buffer.mjs';
+import { Field as _Field } from '../../fb/field.mjs';
+import { FieldNode as _FieldNode } from '../../fb/field-node.mjs';
+import { Type } from '../../fb/type.mjs';
+import { KeyValue as _KeyValue } from '../../fb/key-value.mjs';
+import { Endianness as _Endianness } from '../../fb/endianness.mjs';
+import { FloatingPoint as _FloatingPoint } from '../../fb/floating-point.mjs';
+import { Decimal as _Decimal } from '../../fb/decimal.mjs';
+import { Date as _Date } from '../../fb/date.mjs';
+import { Time as _Time } from '../../fb/time.mjs';
+import { Timestamp as _Timestamp } from '../../fb/timestamp.mjs';
+import { Interval as _Interval } from '../../fb/interval.mjs';
+import { Union as _Union } from '../../fb/union.mjs';
+import { FixedSizeBinary as _FixedSizeBinary } from '../../fb/fixed-size-binary.mjs';
+import { FixedSizeList as _FixedSizeList } from '../../fb/fixed-size-list.mjs';
+import { Map as _Map } from '../../fb/map.mjs';
+import { Message as _Message } from '../../fb/message.mjs';
+import { Schema, Field } from '../../schema.mjs';
+import { toUint8Array } from '../../util/buffer.mjs';
+import { MessageHeader, MetadataVersion } from '../../enum.mjs';
+import { instance as typeAssembler } from '../../visitor/typeassembler.mjs';
+import { fieldFromJSON, schemaFromJSON, recordBatchFromJSON, dictionaryBatchFromJSON } from './json.mjs';
+var Long = flatbuffers.Long;
+var Builder = flatbuffers.Builder;
+var ByteBuffer = flatbuffers.ByteBuffer;
+import { DataType, Dictionary, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct, Union, Bool, Null, Int, Float, Date_, Time, Interval, Timestamp, Int32, } from '../../type.mjs';
+/**
+ * @ignore
+ * @private
+ **/
+export class Message {
+    constructor(bodyLength, version, headerType, header) {
+        this._version = version;
+        this._headerType = headerType;
+        this.body = new Uint8Array(0);
+        header && (this._createHeader = () => header);
+        this._bodyLength = typeof bodyLength === 'number' ? bodyLength : bodyLength.low;
+    }
+    /** @nocollapse */
+    static fromJSON(msg, headerType) {
+        const message = new Message(0, MetadataVersion.V4, headerType);
+        message._createHeader = messageHeaderFromJSON(msg, headerType);
+        return message;
+    }
+    /** @nocollapse */
+    static decode(buf) {
+        buf = new ByteBuffer(toUint8Array(buf));
+        const _message = _Message.getRootAsMessage(buf);
+        const bodyLength = _message.bodyLength();
+        const version = _message.version();
+        const headerType = _message.headerType();
+        const message = new Message(bodyLength, version, headerType);
+        message._createHeader = decodeMessageHeader(_message, headerType);
+        return message;
+    }
+    /** @nocollapse */
+    static encode(message) {
+        const b = new Builder();
+        let headerOffset = -1;
+        if (message.isSchema()) {
+            headerOffset = Schema.encode(b, message.header());
+        }
+        else if (message.isRecordBatch()) {
+            headerOffset = RecordBatch.encode(b, message.header());
+        }
+        else if (message.isDictionaryBatch()) {
+            headerOffset = DictionaryBatch.encode(b, message.header());
+        }
+        _Message.startMessage(b);
+        _Message.addVersion(b, MetadataVersion.V4);
+        _Message.addHeader(b, headerOffset);
+        _Message.addHeaderType(b, message.headerType);
+        _Message.addBodyLength(b, new Long(message.bodyLength, 0));
+        _Message.finishMessageBuffer(b, _Message.endMessage(b));
+        return b.asUint8Array();
+    }
+    /** @nocollapse */
+    static from(header, bodyLength = 0) {
+        if (header instanceof Schema) {
+            return new Message(0, MetadataVersion.V4, MessageHeader.Schema, header);
+        }
+        if (header instanceof RecordBatch) {
+            return new Message(bodyLength, MetadataVersion.V4, MessageHeader.RecordBatch, header);
+        }
+        if (header instanceof DictionaryBatch) {
+            return new Message(bodyLength, MetadataVersion.V4, MessageHeader.DictionaryBatch, header);
+        }
+        throw new Error(`Unrecognized Message header: ${header}`);
+    }
+    get type() { return this.headerType; }
+    get version() { return this._version; }
+    get headerType() { return this._headerType; }
+    get bodyLength() { return this._bodyLength; }
+    header() { return this._createHeader(); }
+    isSchema() { return this.headerType === MessageHeader.Schema; }
+    isRecordBatch() { return this.headerType === MessageHeader.RecordBatch; }
+    isDictionaryBatch() { return this.headerType === MessageHeader.DictionaryBatch; }
+}
+/**
+ * @ignore
+ * @private
+ **/
+export class RecordBatch {
+    constructor(length, nodes, buffers) {
+        this._nodes = nodes;
+        this._buffers = buffers;
+        this._length = typeof length === 'number' ? length : length.low;
+    }
+    get nodes() { return this._nodes; }
+    get length() { return this._length; }
+    get buffers() { return this._buffers; }
+}
+/**
+ * @ignore
+ * @private
+ **/
+export class DictionaryBatch {
+    constructor(data, id, isDelta = false) {
+        this._data = data;
+        this._isDelta = isDelta;
+        this._id = typeof id === 'number' ? id : id.low;
+    }
+    get id() { return this._id; }
+    get data() { return this._data; }
+    get isDelta() { return this._isDelta; }
+    get length() { return this.data.length; }
+    get nodes() { return this.data.nodes; }
+    get buffers() { return this.data.buffers; }
+}
+/**
+ * @ignore
+ * @private
+ **/
+export class BufferRegion {
+    constructor(offset, length) {
+        this.offset = typeof offset === 'number' ? offset : offset.low;
+        this.length = typeof length === 'number' ? length : length.low;
+    }
+}
+/**
+ * @ignore
+ * @private
+ **/
+export class FieldNode {
+    constructor(length, nullCount) {
+        this.length = typeof length === 'number' ? length : length.low;
+        this.nullCount = typeof nullCount === 'number' ? nullCount : nullCount.low;
+    }
+}
+/** @ignore */
+function messageHeaderFromJSON(message, type) {
+    return (() => {
+        switch (type) {
+            case MessageHeader.Schema: return Schema.fromJSON(message);
+            case MessageHeader.RecordBatch: return RecordBatch.fromJSON(message);
+            case MessageHeader.DictionaryBatch: return DictionaryBatch.fromJSON(message);
+        }
+        throw new Error(`Unrecognized Message type: { name: ${MessageHeader[type]}, type: ${type} }`);
+    });
+}
+/** @ignore */
+function decodeMessageHeader(message, type) {
+    return (() => {
+        switch (type) {
+            case MessageHeader.Schema: return Schema.decode(message.header(new _Schema()));
+            case MessageHeader.RecordBatch: return RecordBatch.decode(message.header(new _RecordBatch()), message.version());
+            case MessageHeader.DictionaryBatch: return DictionaryBatch.decode(message.header(new _DictionaryBatch()), message.version());
+        }
+        throw new Error(`Unrecognized Message type: { name: ${MessageHeader[type]}, type: ${type} }`);
+    });
+}
+Field['encode'] = encodeField;
+Field['decode'] = decodeField;
+Field['fromJSON'] = fieldFromJSON;
+Schema['encode'] = encodeSchema;
+Schema['decode'] = decodeSchema;
+Schema['fromJSON'] = schemaFromJSON;
+RecordBatch['encode'] = encodeRecordBatch;
+RecordBatch['decode'] = decodeRecordBatch;
+RecordBatch['fromJSON'] = recordBatchFromJSON;
+DictionaryBatch['encode'] = encodeDictionaryBatch;
+DictionaryBatch['decode'] = decodeDictionaryBatch;
+DictionaryBatch['fromJSON'] = dictionaryBatchFromJSON;
+FieldNode['encode'] = encodeFieldNode;
+FieldNode['decode'] = decodeFieldNode;
+BufferRegion['encode'] = encodeBufferRegion;
+BufferRegion['decode'] = decodeBufferRegion;
+/** @ignore */
+function decodeSchema(_schema, dictionaries = new Map()) {
+    const fields = decodeSchemaFields(_schema, dictionaries);
+    return new Schema(fields, decodeCustomMetadata(_schema), dictionaries);
+}
+/** @ignore */
+function decodeRecordBatch(batch, version = MetadataVersion.V4) {
+    if (batch.compression() !== null) {
+        throw new Error('Record batch compression not implemented');
+    }
+    return new RecordBatch(batch.length(), decodeFieldNodes(batch), decodeBuffers(batch, version));
+}
+/** @ignore */
+function decodeDictionaryBatch(batch, version = MetadataVersion.V4) {
+    return new DictionaryBatch(RecordBatch.decode(batch.data(), version), batch.id(), batch.isDelta());
+}
+/** @ignore */
+function decodeBufferRegion(b) {
+    return new BufferRegion(b.offset(), b.length());
+}
+/** @ignore */
+function decodeFieldNode(f) {
+    return new FieldNode(f.length(), f.nullCount());
+}
+/** @ignore */
+function decodeFieldNodes(batch) {
+    const nodes = [];
+    for (let f, i = -1, j = -1, n = batch.nodesLength(); ++i < n;) {
+        if (f = batch.nodes(i)) {
+            nodes[++j] = FieldNode.decode(f);
+        }
+    }
+    return nodes;
+}
+/** @ignore */
+function decodeBuffers(batch, version) {
+    const bufferRegions = [];
+    for (let b, i = -1, j = -1, n = batch.buffersLength(); ++i < n;) {
+        if (b = batch.buffers(i)) {
+            // If this Arrow buffer was written before version 4,
+            // advance the buffer's bb_pos 8 bytes to skip past
+            // the now-removed page_id field
+            if (version < MetadataVersion.V4) {
+                b.bb_pos += (8 * (i + 1));
+            }
+            bufferRegions[++j] = BufferRegion.decode(b);
+        }
+    }
+    return bufferRegions;
+}
+/** @ignore */
+function decodeSchemaFields(schema, dictionaries) {
+    const fields = [];
+    for (let f, i = -1, j = -1, n = schema.fieldsLength(); ++i < n;) {
+        if (f = schema.fields(i)) {
+            fields[++j] = Field.decode(f, dictionaries);
+        }
+    }
+    return fields;
+}
+/** @ignore */
+function decodeFieldChildren(field, dictionaries) {
+    const children = [];
+    for (let f, i = -1, j = -1, n = field.childrenLength(); ++i < n;) {
+        if (f = field.children(i)) {
+            children[++j] = Field.decode(f, dictionaries);
+        }
+    }
+    return children;
+}
+/** @ignore */
+function decodeField(f, dictionaries) {
+    let id;
+    let field;
+    let type;
+    let keys;
+    let dictType;
+    let dictMeta;
+    // If no dictionary encoding
+    if (!dictionaries || !(dictMeta = f.dictionary())) {
+        type = decodeFieldType(f, decodeFieldChildren(f, dictionaries));
+        field = new Field(f.name(), type, f.nullable(), decodeCustomMetadata(f));
+    }
+    // If dictionary encoded and the first time we've seen this dictionary id, decode
+    // the data type and child fields, then wrap in a Dictionary type and insert the
+    // data type into the dictionary types map.
+    else if (!dictionaries.has(id = dictMeta.id().low)) {
+        // a dictionary index defaults to signed 32 bit int if unspecified
+        keys = (keys = dictMeta.indexType()) ? decodeIndexType(keys) : new Int32();
+        dictionaries.set(id, type = decodeFieldType(f, decodeFieldChildren(f, dictionaries)));
+        dictType = new Dictionary(type, keys, id, dictMeta.isOrdered());
+        field = new Field(f.name(), dictType, f.nullable(), decodeCustomMetadata(f));
+    }
+    // If dictionary encoded, and have already seen this dictionary Id in the schema, then reuse the
+    // data type and wrap in a new Dictionary type and field.
+    else {
+        // a dictionary index defaults to signed 32 bit int if unspecified
+        keys = (keys = dictMeta.indexType()) ? decodeIndexType(keys) : new Int32();
+        dictType = new Dictionary(dictionaries.get(id), keys, id, dictMeta.isOrdered());
+        field = new Field(f.name(), dictType, f.nullable(), decodeCustomMetadata(f));
+    }
+    return field || null;
+}
+/** @ignore */
+function decodeCustomMetadata(parent) {
+    const data = new Map();
+    if (parent) {
+        for (let entry, key, i = -1, n = Math.trunc(parent.customMetadataLength()); ++i < n;) {
+            if ((entry = parent.customMetadata(i)) && (key = entry.key()) != null) {
+                data.set(key, entry.value());
+            }
+        }
+    }
+    return data;
+}
+/** @ignore */
+function decodeIndexType(_type) {
+    return new Int(_type.isSigned(), _type.bitWidth());
+}
+/** @ignore */
+function decodeFieldType(f, children) {
+    const typeId = f.typeType();
+    switch (typeId) {
+        case Type['NONE']: return new Null();
+        case Type['Null']: return new Null();
+        case Type['Binary']: return new Binary();
+        case Type['Utf8']: return new Utf8();
+        case Type['Bool']: return new Bool();
+        case Type['List']: return new List((children || [])[0]);
+        case Type['Struct_']: return new Struct(children || []);
+    }
+    switch (typeId) {
+        case Type['Int']: {
+            const t = f.type(new _Int());
+            return new Int(t.isSigned(), t.bitWidth());
+        }
+        case Type['FloatingPoint']: {
+            const t = f.type(new _FloatingPoint());
+            return new Float(t.precision());
+        }
+        case Type['Decimal']: {
+            const t = f.type(new _Decimal());
+            return new Decimal(t.scale(), t.precision(), t.bitWidth());
+        }
+        case Type['Date']: {
+            const t = f.type(new _Date());
+            return new Date_(t.unit());
+        }
+        case Type['Time']: {
+            const t = f.type(new _Time());
+            return new Time(t.unit(), t.bitWidth());
+        }
+        case Type['Timestamp']: {
+            const t = f.type(new _Timestamp());
+            return new Timestamp(t.unit(), t.timezone());
+        }
+        case Type['Interval']: {
+            const t = f.type(new _Interval());
+            return new Interval(t.unit());
+        }
+        case Type['Union']: {
+            const t = f.type(new _Union());
+            return new Union(t.mode(), t.typeIdsArray() || [], children || []);
+        }
+        case Type['FixedSizeBinary']: {
+            const t = f.type(new _FixedSizeBinary());
+            return new FixedSizeBinary(t.byteWidth());
+        }
+        case Type['FixedSizeList']: {
+            const t = f.type(new _FixedSizeList());
+            return new FixedSizeList(t.listSize(), (children || [])[0]);
+        }
+        case Type['Map']: {
+            const t = f.type(new _Map());
+            return new Map_((children || [])[0], t.keysSorted());
+        }
+    }
+    throw new Error(`Unrecognized type: "${Type[typeId]}" (${typeId})`);
+}
+/** @ignore */
+function encodeSchema(b, schema) {
+    const fieldOffsets = schema.fields.map((f) => Field.encode(b, f));
+    _Schema.startFieldsVector(b, fieldOffsets.length);
+    const fieldsVectorOffset = _Schema.createFieldsVector(b, fieldOffsets);
+    const metadataOffset = !(schema.metadata && schema.metadata.size > 0) ? -1 :
+        _Schema.createCustomMetadataVector(b, [...schema.metadata].map(([k, v]) => {
+            const key = b.createString(`${k}`);
+            const val = b.createString(`${v}`);
+            _KeyValue.startKeyValue(b);
+            _KeyValue.addKey(b, key);
+            _KeyValue.addValue(b, val);
+            return _KeyValue.endKeyValue(b);
+        }));
+    _Schema.startSchema(b);
+    _Schema.addFields(b, fieldsVectorOffset);
+    _Schema.addEndianness(b, platformIsLittleEndian ? _Endianness.Little : _Endianness.Big);
+    if (metadataOffset !== -1) {
+        _Schema.addCustomMetadata(b, metadataOffset);
+    }
+    return _Schema.endSchema(b);
+}
+/** @ignore */
+function encodeField(b, field) {
+    let nameOffset = -1;
+    let typeOffset = -1;
+    let dictionaryOffset = -1;
+    const type = field.type;
+    let typeId = field.typeId;
+    if (!DataType.isDictionary(type)) {
+        typeOffset = typeAssembler.visit(type, b);
+    }
+    else {
+        typeId = type.dictionary.typeId;
+        dictionaryOffset = typeAssembler.visit(type, b);
+        typeOffset = typeAssembler.visit(type.dictionary, b);
+    }
+    const childOffsets = (type.children || []).map((f) => Field.encode(b, f));
+    const childrenVectorOffset = _Field.createChildrenVector(b, childOffsets);
+    const metadataOffset = !(field.metadata && field.metadata.size > 0) ? -1 :
+        _Field.createCustomMetadataVector(b, [...field.metadata].map(([k, v]) => {
+            const key = b.createString(`${k}`);
+            const val = b.createString(`${v}`);
+            _KeyValue.startKeyValue(b);
+            _KeyValue.addKey(b, key);
+            _KeyValue.addValue(b, val);
+            return _KeyValue.endKeyValue(b);
+        }));
+    if (field.name) {
+        nameOffset = b.createString(field.name);
+    }
+    _Field.startField(b);
+    _Field.addType(b, typeOffset);
+    _Field.addTypeType(b, typeId);
+    _Field.addChildren(b, childrenVectorOffset);
+    _Field.addNullable(b, !!field.nullable);
+    if (nameOffset !== -1) {
+        _Field.addName(b, nameOffset);
+    }
+    if (dictionaryOffset !== -1) {
+        _Field.addDictionary(b, dictionaryOffset);
+    }
+    if (metadataOffset !== -1) {
+        _Field.addCustomMetadata(b, metadataOffset);
+    }
+    return _Field.endField(b);
+}
+/** @ignore */
+function encodeRecordBatch(b, recordBatch) {
+    const nodes = recordBatch.nodes || [];
+    const buffers = recordBatch.buffers || [];
+    _RecordBatch.startNodesVector(b, nodes.length);
+    for (const n of nodes.slice().reverse())
+        FieldNode.encode(b, n);
+    const nodesVectorOffset = b.endVector();
+    _RecordBatch.startBuffersVector(b, buffers.length);
+    for (const b_ of buffers.slice().reverse())
+        BufferRegion.encode(b, b_);
+    const buffersVectorOffset = b.endVector();
+    _RecordBatch.startRecordBatch(b);
+    _RecordBatch.addLength(b, new Long(recordBatch.length, 0));
+    _RecordBatch.addNodes(b, nodesVectorOffset);
+    _RecordBatch.addBuffers(b, buffersVectorOffset);
+    return _RecordBatch.endRecordBatch(b);
+}
+/** @ignore */
+function encodeDictionaryBatch(b, dictionaryBatch) {
+    const dataOffset = RecordBatch.encode(b, dictionaryBatch.data);
+    _DictionaryBatch.startDictionaryBatch(b);
+    _DictionaryBatch.addId(b, new Long(dictionaryBatch.id, 0));
+    _DictionaryBatch.addIsDelta(b, dictionaryBatch.isDelta);
+    _DictionaryBatch.addData(b, dataOffset);
+    return _DictionaryBatch.endDictionaryBatch(b);
+}
+/** @ignore */
+function encodeFieldNode(b, node) {
+    return _FieldNode.createFieldNode(b, new Long(node.length, 0), new Long(node.nullCount, 0));
+}
+/** @ignore */
+function encodeBufferRegion(b, node) {
+    return _Buffer.createBuffer(b, new Long(node.offset, 0), new Long(node.length, 0));
+}
+/** @ignore */
+const platformIsLittleEndian = (() => {
+    const buffer = new ArrayBuffer(2);
+    new DataView(buffer).setInt16(0, 256, true /* littleEndian */);
+    // Int16Array uses the platform's endianness.
+    return new Int16Array(buffer)[0] === 256;
+})();
+
+//# sourceMappingURL=message.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/ipc/metadata/message.mjs.map b/igv_component/node_modules/apache-arrow/ipc/metadata/message.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..2300a8c9d84764c63630756618343b23ac324173
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/metadata/message.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/reader.d.ts b/igv_component/node_modules/apache-arrow/ipc/reader.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..884ec32aff8d59c9a5516d38b7b8704959a07a95
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/reader.d.ts
@@ -0,0 +1,240 @@
+/// <reference types="node" />
+/// <reference types="node" />
+import { Vector } from '../vector.js';
+import { DataType, TypeMap } from '../type.js';
+import { MessageHeader } from '../enum.js';
+import { Footer } from './metadata/file.js';
+import { Schema, Field } from '../schema.js';
+import { Message } from './metadata/message.js';
+import * as metadata from './metadata/message.js';
+import { ArrayBufferViewInput } from '../util/buffer.js';
+import { ByteStream, AsyncByteStream } from '../io/stream.js';
+import { RandomAccessFile, AsyncRandomAccessFile } from '../io/file.js';
+import { RecordBatch } from '../recordbatch.js';
+import { FileHandle, ArrowJSONLike, ReadableInterop } from '../io/interfaces.js';
+import { MessageReader, AsyncMessageReader } from './message.js';
+/** @ignore */ export declare type FromArg0 = ArrowJSONLike;
+/** @ignore */ export declare type FromArg1 = PromiseLike<ArrowJSONLike>;
+/** @ignore */ export declare type FromArg2 = Iterable<ArrayBufferViewInput> | ArrayBufferViewInput;
+/** @ignore */ export declare type FromArg3 = PromiseLike<Iterable<ArrayBufferViewInput> | ArrayBufferViewInput>;
+/** @ignore */ export declare type FromArg4 = Response | NodeJS.ReadableStream | ReadableStream<ArrayBufferViewInput> | AsyncIterable<ArrayBufferViewInput>;
+/** @ignore */ export declare type FromArg5 = FileHandle | PromiseLike<FileHandle> | PromiseLike<FromArg4>;
+/** @ignore */ export declare type FromArgs = FromArg0 | FromArg1 | FromArg2 | FromArg3 | FromArg4 | FromArg5;
+/** @ignore */ declare type OpenOptions = {
+    autoDestroy?: boolean;
+};
+/** @ignore */ declare type RecordBatchReaders<T extends TypeMap = any> = RecordBatchFileReader<T> | RecordBatchStreamReader<T>;
+/** @ignore */ declare type AsyncRecordBatchReaders<T extends TypeMap = any> = AsyncRecordBatchFileReader<T> | AsyncRecordBatchStreamReader<T>;
+/** @ignore */ declare type RecordBatchFileReaders<T extends TypeMap = any> = RecordBatchFileReader<T> | AsyncRecordBatchFileReader<T>;
+/** @ignore */ declare type RecordBatchStreamReaders<T extends TypeMap = any> = RecordBatchStreamReader<T> | AsyncRecordBatchStreamReader<T>;
+export declare class RecordBatchReader<T extends TypeMap = any> extends ReadableInterop<RecordBatch<T>> {
+    protected _impl: RecordBatchReaderImpls<T>;
+    protected constructor(impl: RecordBatchReaderImpls<T>);
+    get closed(): boolean;
+    get schema(): Schema<T>;
+    get autoDestroy(): boolean;
+    get dictionaries(): Map<number, Vector<any>>;
+    get numDictionaries(): number;
+    get numRecordBatches(): number;
+    get footer(): Footer | null;
+    isSync(): this is RecordBatchReaders<T>;
+    isAsync(): this is AsyncRecordBatchReaders<T>;
+    isFile(): this is RecordBatchFileReaders<T>;
+    isStream(): this is RecordBatchStreamReaders<T>;
+    next(): IteratorResult<RecordBatch<T>, any> | Promise<IteratorResult<RecordBatch<T>, any>>;
+    throw(value?: any): IteratorResult<any, any> | Promise<IteratorResult<any, any>>;
+    return(value?: any): IteratorResult<any, any> | Promise<IteratorResult<any, any>>;
+    cancel(): void | Promise<void>;
+    reset(schema?: Schema<T> | null): this;
+    open(options?: OpenOptions): this | Promise<this>;
+    readRecordBatch(index: number): RecordBatch<T> | null | Promise<RecordBatch<T> | null>;
+    [Symbol.iterator](): IterableIterator<RecordBatch<T>>;
+    [Symbol.asyncIterator](): AsyncIterableIterator<RecordBatch<T>>;
+    toDOMStream(): ReadableStream<RecordBatch<T>>;
+    toNodeStream(): import("stream").Readable;
+    /** @nocollapse */
+    static throughNode(options?: import('stream').DuplexOptions & {
+        autoDestroy: boolean;
+    }): import('stream').Duplex;
+    /** @nocollapse */
+    static throughDOM<T extends TypeMap>(writableStrategy?: ByteLengthQueuingStrategy, readableStrategy?: {
+        autoDestroy: boolean;
+    }): {
+        writable: WritableStream<Uint8Array>;
+        readable: ReadableStream<RecordBatch<T>>;
+    };
+    static from<T extends RecordBatchReader>(source: T): T;
+    static from<T extends TypeMap = any>(source: FromArg0): RecordBatchStreamReader<T>;
+    static from<T extends TypeMap = any>(source: FromArg1): Promise<RecordBatchStreamReader<T>>;
+    static from<T extends TypeMap = any>(source: FromArg2): RecordBatchFileReader<T> | RecordBatchStreamReader<T>;
+    static from<T extends TypeMap = any>(source: FromArg3): Promise<RecordBatchFileReader<T> | RecordBatchStreamReader<T>>;
+    static from<T extends TypeMap = any>(source: FromArg4): Promise<AsyncRecordBatchFileReader<T> | AsyncRecordBatchStreamReader<T>>;
+    static from<T extends TypeMap = any>(source: FromArg5): Promise<AsyncRecordBatchFileReader<T> | AsyncRecordBatchStreamReader<T>>;
+    static readAll<T extends RecordBatchReader>(source: T): T extends RecordBatchReaders ? IterableIterator<T> : AsyncIterableIterator<T>;
+    static readAll<T extends TypeMap = any>(source: FromArg0): IterableIterator<RecordBatchStreamReader<T>>;
+    static readAll<T extends TypeMap = any>(source: FromArg1): AsyncIterableIterator<RecordBatchStreamReader<T>>;
+    static readAll<T extends TypeMap = any>(source: FromArg2): IterableIterator<RecordBatchFileReader<T> | RecordBatchStreamReader<T>>;
+    static readAll<T extends TypeMap = any>(source: FromArg3): AsyncIterableIterator<RecordBatchFileReader<T> | RecordBatchStreamReader<T>>;
+    static readAll<T extends TypeMap = any>(source: FromArg4): AsyncIterableIterator<AsyncRecordBatchReaders<T>>;
+    static readAll<T extends TypeMap = any>(source: FromArg5): AsyncIterableIterator<AsyncRecordBatchReaders<T>>;
+}
+/** @ignore */
+export declare class RecordBatchStreamReader<T extends TypeMap = any> extends RecordBatchReader<T> {
+    protected _impl: RecordBatchStreamReaderImpl<T>;
+    constructor(_impl: RecordBatchStreamReaderImpl<T>);
+    readAll(): RecordBatch<T>[];
+    [Symbol.iterator](): IterableIterator<RecordBatch<T>>;
+    [Symbol.asyncIterator](): AsyncIterableIterator<RecordBatch<T>>;
+}
+/** @ignore */
+export declare class AsyncRecordBatchStreamReader<T extends TypeMap = any> extends RecordBatchReader<T> {
+    protected _impl: AsyncRecordBatchStreamReaderImpl<T>;
+    constructor(_impl: AsyncRecordBatchStreamReaderImpl<T>);
+    readAll(): Promise<RecordBatch<T>[]>;
+    [Symbol.iterator](): IterableIterator<RecordBatch<T>>;
+    [Symbol.asyncIterator](): AsyncIterableIterator<RecordBatch<T>>;
+}
+/** @ignore */
+export declare class RecordBatchFileReader<T extends TypeMap = any> extends RecordBatchStreamReader<T> {
+    protected _impl: RecordBatchFileReaderImpl<T>;
+    constructor(_impl: RecordBatchFileReaderImpl<T>);
+}
+/** @ignore */
+export declare class AsyncRecordBatchFileReader<T extends TypeMap = any> extends AsyncRecordBatchStreamReader<T> {
+    protected _impl: AsyncRecordBatchFileReaderImpl<T>;
+    constructor(_impl: AsyncRecordBatchFileReaderImpl<T>);
+}
+/** @ignore */
+export interface RecordBatchStreamReader<T extends TypeMap = any> extends RecordBatchReader<T> {
+    open(options?: OpenOptions | undefined): this;
+    cancel(): void;
+    throw(value?: any): IteratorResult<any>;
+    return(value?: any): IteratorResult<any>;
+    next(value?: any): IteratorResult<RecordBatch<T>>;
+}
+/** @ignore */
+export interface AsyncRecordBatchStreamReader<T extends TypeMap = any> extends RecordBatchReader<T> {
+    open(options?: OpenOptions | undefined): Promise<this>;
+    cancel(): Promise<void>;
+    throw(value?: any): Promise<IteratorResult<any>>;
+    return(value?: any): Promise<IteratorResult<any>>;
+    next(value?: any): Promise<IteratorResult<RecordBatch<T>>>;
+}
+/** @ignore */
+export interface RecordBatchFileReader<T extends TypeMap = any> extends RecordBatchStreamReader<T> {
+    readRecordBatch(index: number): RecordBatch<T> | null;
+}
+/** @ignore */
+export interface AsyncRecordBatchFileReader<T extends TypeMap = any> extends AsyncRecordBatchStreamReader<T> {
+    readRecordBatch(index: number): Promise<RecordBatch<T> | null>;
+}
+/** @ignore */
+declare type RecordBatchReaderImpls<T extends TypeMap = any> = RecordBatchJSONReaderImpl<T> | RecordBatchFileReaderImpl<T> | RecordBatchStreamReaderImpl<T> | AsyncRecordBatchFileReaderImpl<T> | AsyncRecordBatchStreamReaderImpl<T>;
+/** @ignore */
+interface RecordBatchReaderImpl<T extends TypeMap = any> {
+    closed: boolean;
+    schema: Schema<T>;
+    autoDestroy: boolean;
+    dictionaries: Map<number, Vector>;
+    isFile(): this is RecordBatchFileReaders<T>;
+    isStream(): this is RecordBatchStreamReaders<T>;
+    isSync(): this is RecordBatchReaders<T>;
+    isAsync(): this is AsyncRecordBatchReaders<T>;
+    reset(schema?: Schema<T> | null): this;
+}
+/** @ignore */
+interface RecordBatchStreamReaderImpl<T extends TypeMap = any> extends RecordBatchReaderImpl<T> {
+    open(options?: OpenOptions): this;
+    cancel(): void;
+    throw(value?: any): IteratorResult<any>;
+    return(value?: any): IteratorResult<any>;
+    next(value?: any): IteratorResult<RecordBatch<T>>;
+    [Symbol.iterator](): IterableIterator<RecordBatch<T>>;
+}
+/** @ignore */
+interface AsyncRecordBatchStreamReaderImpl<T extends TypeMap = any> extends RecordBatchReaderImpl<T> {
+    open(options?: OpenOptions): Promise<this>;
+    cancel(): Promise<void>;
+    throw(value?: any): Promise<IteratorResult<any>>;
+    return(value?: any): Promise<IteratorResult<any>>;
+    next(value?: any): Promise<IteratorResult<RecordBatch<T>>>;
+    [Symbol.asyncIterator](): AsyncIterableIterator<RecordBatch<T>>;
+}
+/** @ignore */
+interface RecordBatchFileReaderImpl<T extends TypeMap = any> extends RecordBatchStreamReaderImpl<T> {
+    readRecordBatch(index: number): RecordBatch<T> | null;
+}
+/** @ignore */
+interface AsyncRecordBatchFileReaderImpl<T extends TypeMap = any> extends AsyncRecordBatchStreamReaderImpl<T> {
+    readRecordBatch(index: number): Promise<RecordBatch<T> | null>;
+}
+/** @ignore */
+declare abstract class RecordBatchReaderImpl<T extends TypeMap = any> implements RecordBatchReaderImpl<T> {
+    schema: Schema<T>;
+    closed: boolean;
+    autoDestroy: boolean;
+    dictionaries: Map<number, Vector>;
+    protected _dictionaryIndex: number;
+    protected _recordBatchIndex: number;
+    get numDictionaries(): number;
+    get numRecordBatches(): number;
+    constructor(dictionaries?: Map<number, Vector<any>>);
+    protected _loadRecordBatch(header: metadata.RecordBatch, body: any): RecordBatch<T>;
+    protected _loadDictionaryBatch(header: metadata.DictionaryBatch, body: any): Vector<any>;
+    protected _loadVectors(header: metadata.RecordBatch, body: any, types: (Field | DataType)[]): import("../data.js").Data<any>[];
+}
+/** @ignore */
+declare class RecordBatchStreamReaderImpl<T extends TypeMap = any> extends RecordBatchReaderImpl<T> implements IterableIterator<RecordBatch<T>> {
+    protected _reader: MessageReader;
+    protected _handle: ByteStream | ArrowJSONLike;
+    constructor(source: ByteStream | ArrowJSONLike, dictionaries?: Map<number, Vector>);
+    isSync(): this is RecordBatchReaders<T>;
+    isStream(): this is RecordBatchStreamReaders<T>;
+    protected _readNextMessageAndValidate<T extends MessageHeader>(type?: T | null): Message<T> | null;
+}
+/** @ignore */
+declare class AsyncRecordBatchStreamReaderImpl<T extends TypeMap = any> extends RecordBatchReaderImpl<T> implements AsyncIterableIterator<RecordBatch<T>> {
+    protected _handle: AsyncByteStream;
+    protected _reader: AsyncMessageReader;
+    constructor(source: AsyncByteStream, dictionaries?: Map<number, Vector>);
+    isAsync(): this is AsyncRecordBatchReaders<T>;
+    isStream(): this is RecordBatchStreamReaders<T>;
+    protected _readNextMessageAndValidate<T extends MessageHeader>(type?: T | null): Promise<Message<T> | null>;
+}
+/** @ignore */
+declare class RecordBatchFileReaderImpl<T extends TypeMap = any> extends RecordBatchStreamReaderImpl<T> {
+    protected _footer?: Footer;
+    protected _handle: RandomAccessFile;
+    get footer(): Footer;
+    get numDictionaries(): number;
+    get numRecordBatches(): number;
+    constructor(source: RandomAccessFile | ArrayBufferViewInput, dictionaries?: Map<number, Vector>);
+    isSync(): this is RecordBatchReaders<T>;
+    isFile(): this is RecordBatchFileReaders<T>;
+    open(options?: OpenOptions): this;
+    protected _readDictionaryBatch(index: number): void;
+    protected _readFooter(): Footer;
+    protected _readNextMessageAndValidate<T extends MessageHeader>(type?: T | null): Message<T> | null;
+}
+/** @ignore */
+declare class AsyncRecordBatchFileReaderImpl<T extends TypeMap = any> extends AsyncRecordBatchStreamReaderImpl<T> implements AsyncRecordBatchFileReaderImpl<T> {
+    protected _footer?: Footer;
+    protected _handle: AsyncRandomAccessFile;
+    get footer(): Footer;
+    get numDictionaries(): number;
+    get numRecordBatches(): number;
+    constructor(source: FileHandle, byteLength?: number, dictionaries?: Map<number, Vector>);
+    constructor(source: FileHandle | AsyncRandomAccessFile, dictionaries?: Map<number, Vector>);
+    isFile(): this is RecordBatchFileReaders<T>;
+    isAsync(): this is AsyncRecordBatchReaders<T>;
+    open(options?: OpenOptions): Promise<this>;
+    protected _readDictionaryBatch(index: number): Promise<void>;
+    protected _readFooter(): Promise<Footer>;
+    protected _readNextMessageAndValidate<T extends MessageHeader>(type?: T | null): Promise<Message<T> | null>;
+}
+/** @ignore */
+declare class RecordBatchJSONReaderImpl<T extends TypeMap = any> extends RecordBatchStreamReaderImpl<T> {
+    constructor(source: ArrowJSONLike, dictionaries?: Map<number, Vector>);
+    protected _loadVectors(header: metadata.RecordBatch, body: any, types: (Field | DataType)[]): import("../data.js").Data<any>[];
+}
+export {};
diff --git a/igv_component/node_modules/apache-arrow/ipc/reader.d.ts.map b/igv_component/node_modules/apache-arrow/ipc/reader.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..0d2c19731654c551ea2e541a448909b9ddbc574d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/reader.d.ts.map
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/reader.js b/igv_component/node_modules/apache-arrow/ipc/reader.js
new file mode 100644
index 0000000000000000000000000000000000000000..fd416d64afcedfa6917fb8aa281e0bede3047e2b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/reader.js
@@ -0,0 +1,659 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.AsyncRecordBatchFileReader = exports.RecordBatchFileReader = exports.AsyncRecordBatchStreamReader = exports.RecordBatchStreamReader = exports.RecordBatchReader = void 0;
+const tslib_1 = require("tslib");
+const data_js_1 = require("../data.js");
+const vector_js_1 = require("../vector.js");
+const type_js_1 = require("../type.js");
+const enum_js_1 = require("../enum.js");
+const file_js_1 = require("./metadata/file.js");
+const adapters_js_1 = tslib_1.__importDefault(require("../io/adapters.js"));
+const stream_js_1 = require("../io/stream.js");
+const file_js_2 = require("../io/file.js");
+const vectorloader_js_1 = require("../visitor/vectorloader.js");
+const recordbatch_js_1 = require("../recordbatch.js");
+const interfaces_js_1 = require("../io/interfaces.js");
+const message_js_1 = require("./message.js");
+const compat_js_1 = require("../util/compat.js");
+class RecordBatchReader extends interfaces_js_1.ReadableInterop {
+    constructor(impl) {
+        super();
+        this._impl = impl;
+    }
+    get closed() { return this._impl.closed; }
+    get schema() { return this._impl.schema; }
+    get autoDestroy() { return this._impl.autoDestroy; }
+    get dictionaries() { return this._impl.dictionaries; }
+    get numDictionaries() { return this._impl.numDictionaries; }
+    get numRecordBatches() { return this._impl.numRecordBatches; }
+    get footer() { return this._impl.isFile() ? this._impl.footer : null; }
+    isSync() { return this._impl.isSync(); }
+    isAsync() { return this._impl.isAsync(); }
+    isFile() { return this._impl.isFile(); }
+    isStream() { return this._impl.isStream(); }
+    next() {
+        return this._impl.next();
+    }
+    throw(value) {
+        return this._impl.throw(value);
+    }
+    return(value) {
+        return this._impl.return(value);
+    }
+    cancel() {
+        return this._impl.cancel();
+    }
+    reset(schema) {
+        this._impl.reset(schema);
+        this._DOMStream = undefined;
+        this._nodeStream = undefined;
+        return this;
+    }
+    open(options) {
+        const opening = this._impl.open(options);
+        return (0, compat_js_1.isPromise)(opening) ? opening.then(() => this) : this;
+    }
+    readRecordBatch(index) {
+        return this._impl.isFile() ? this._impl.readRecordBatch(index) : null;
+    }
+    [Symbol.iterator]() {
+        return this._impl[Symbol.iterator]();
+    }
+    [Symbol.asyncIterator]() {
+        return this._impl[Symbol.asyncIterator]();
+    }
+    toDOMStream() {
+        return adapters_js_1.default.toDOMStream((this.isSync()
+            ? { [Symbol.iterator]: () => this }
+            : { [Symbol.asyncIterator]: () => this }));
+    }
+    toNodeStream() {
+        return adapters_js_1.default.toNodeStream((this.isSync()
+            ? { [Symbol.iterator]: () => this }
+            : { [Symbol.asyncIterator]: () => this }), { objectMode: true });
+    }
+    /** @nocollapse */
+    // @ts-ignore
+    static throughNode(options) {
+        throw new Error(`"throughNode" not available in this environment`);
+    }
+    /** @nocollapse */
+    static throughDOM(
+    // @ts-ignore
+    writableStrategy, 
+    // @ts-ignore
+    readableStrategy) {
+        throw new Error(`"throughDOM" not available in this environment`);
+    }
+    /** @nocollapse */
+    static from(source) {
+        if (source instanceof RecordBatchReader) {
+            return source;
+        }
+        else if ((0, compat_js_1.isArrowJSON)(source)) {
+            return fromArrowJSON(source);
+        }
+        else if ((0, compat_js_1.isFileHandle)(source)) {
+            return fromFileHandle(source);
+        }
+        else if ((0, compat_js_1.isPromise)(source)) {
+            return (() => tslib_1.__awaiter(this, void 0, void 0, function* () { return yield RecordBatchReader.from(yield source); }))();
+        }
+        else if ((0, compat_js_1.isFetchResponse)(source) || (0, compat_js_1.isReadableDOMStream)(source) || (0, compat_js_1.isReadableNodeStream)(source) || (0, compat_js_1.isAsyncIterable)(source)) {
+            return fromAsyncByteStream(new stream_js_1.AsyncByteStream(source));
+        }
+        return fromByteStream(new stream_js_1.ByteStream(source));
+    }
+    /** @nocollapse */
+    static readAll(source) {
+        if (source instanceof RecordBatchReader) {
+            return source.isSync() ? readAllSync(source) : readAllAsync(source);
+        }
+        else if ((0, compat_js_1.isArrowJSON)(source) || ArrayBuffer.isView(source) || (0, compat_js_1.isIterable)(source) || (0, compat_js_1.isIteratorResult)(source)) {
+            return readAllSync(source);
+        }
+        return readAllAsync(source);
+    }
+}
+exports.RecordBatchReader = RecordBatchReader;
+//
+// Since TS is a structural type system, we define the following subclass stubs
+// so that concrete types exist to associate with with the interfaces below.
+//
+// The implementation for each RecordBatchReader is hidden away in the set of
+// `RecordBatchReaderImpl` classes in the second half of this file. This allows
+// us to export a single RecordBatchReader class, and swap out the impl based
+// on the io primitives or underlying arrow (JSON, file, or stream) at runtime.
+//
+// Async/await makes our job a bit harder, since it forces everything to be
+// either fully sync or fully async. This is why the logic for the reader impls
+// has been duplicated into both sync and async variants. Since the RBR
+// delegates to its impl, an RBR with an AsyncRecordBatchFileReaderImpl for
+// example will return async/await-friendly Promises, but one with a (sync)
+// RecordBatchStreamReaderImpl will always return values. Nothing should be
+// different about their logic, aside from the async handling. This is also why
+// this code looks highly structured, as it should be nearly identical and easy
+// to follow.
+//
+/** @ignore */
+class RecordBatchStreamReader extends RecordBatchReader {
+    constructor(_impl) {
+        super(_impl);
+        this._impl = _impl;
+    }
+    readAll() { return [...this]; }
+    [Symbol.iterator]() { return this._impl[Symbol.iterator](); }
+    [Symbol.asyncIterator]() { return tslib_1.__asyncGenerator(this, arguments, function* _a() { yield tslib_1.__await(yield* tslib_1.__asyncDelegator(tslib_1.__asyncValues(this[Symbol.iterator]()))); }); }
+}
+exports.RecordBatchStreamReader = RecordBatchStreamReader;
+/** @ignore */
+class AsyncRecordBatchStreamReader extends RecordBatchReader {
+    constructor(_impl) {
+        super(_impl);
+        this._impl = _impl;
+    }
+    readAll() {
+        var e_1, _a;
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            const batches = new Array();
+            try {
+                for (var _b = tslib_1.__asyncValues(this), _c; _c = yield _b.next(), !_c.done;) {
+                    const batch = _c.value;
+                    batches.push(batch);
+                }
+            }
+            catch (e_1_1) { e_1 = { error: e_1_1 }; }
+            finally {
+                try {
+                    if (_c && !_c.done && (_a = _b.return)) yield _a.call(_b);
+                }
+                finally { if (e_1) throw e_1.error; }
+            }
+            return batches;
+        });
+    }
+    [Symbol.iterator]() { throw new Error(`AsyncRecordBatchStreamReader is not Iterable`); }
+    [Symbol.asyncIterator]() { return this._impl[Symbol.asyncIterator](); }
+}
+exports.AsyncRecordBatchStreamReader = AsyncRecordBatchStreamReader;
+/** @ignore */
+class RecordBatchFileReader extends RecordBatchStreamReader {
+    constructor(_impl) {
+        super(_impl);
+        this._impl = _impl;
+    }
+}
+exports.RecordBatchFileReader = RecordBatchFileReader;
+/** @ignore */
+class AsyncRecordBatchFileReader extends AsyncRecordBatchStreamReader {
+    constructor(_impl) {
+        super(_impl);
+        this._impl = _impl;
+    }
+}
+exports.AsyncRecordBatchFileReader = AsyncRecordBatchFileReader;
+/** @ignore */
+class RecordBatchReaderImpl {
+    constructor(dictionaries = new Map()) {
+        this.closed = false;
+        this.autoDestroy = true;
+        this._dictionaryIndex = 0;
+        this._recordBatchIndex = 0;
+        this.dictionaries = dictionaries;
+    }
+    get numDictionaries() { return this._dictionaryIndex; }
+    get numRecordBatches() { return this._recordBatchIndex; }
+    isSync() { return false; }
+    isAsync() { return false; }
+    isFile() { return false; }
+    isStream() { return false; }
+    reset(schema) {
+        this._dictionaryIndex = 0;
+        this._recordBatchIndex = 0;
+        this.schema = schema;
+        this.dictionaries = new Map();
+        return this;
+    }
+    _loadRecordBatch(header, body) {
+        const children = this._loadVectors(header, body, this.schema.fields);
+        const data = (0, data_js_1.makeData)({ type: new type_js_1.Struct(this.schema.fields), length: header.length, children });
+        return new recordbatch_js_1.RecordBatch(this.schema, data);
+    }
+    _loadDictionaryBatch(header, body) {
+        const { id, isDelta } = header;
+        const { dictionaries, schema } = this;
+        const dictionary = dictionaries.get(id);
+        if (isDelta || !dictionary) {
+            const type = schema.dictionaries.get(id);
+            const data = this._loadVectors(header.data, body, [type]);
+            return (dictionary && isDelta ? dictionary.concat(new vector_js_1.Vector(data)) :
+                new vector_js_1.Vector(data)).memoize();
+        }
+        return dictionary.memoize();
+    }
+    _loadVectors(header, body, types) {
+        return new vectorloader_js_1.VectorLoader(body, header.nodes, header.buffers, this.dictionaries).visitMany(types);
+    }
+}
+/** @ignore */
+class RecordBatchStreamReaderImpl extends RecordBatchReaderImpl {
+    constructor(source, dictionaries) {
+        super(dictionaries);
+        this._reader = !(0, compat_js_1.isArrowJSON)(source)
+            ? new message_js_1.MessageReader(this._handle = source)
+            : new message_js_1.JSONMessageReader(this._handle = source);
+    }
+    isSync() { return true; }
+    isStream() { return true; }
+    [Symbol.iterator]() {
+        return this;
+    }
+    cancel() {
+        if (!this.closed && (this.closed = true)) {
+            this.reset()._reader.return();
+            this._reader = null;
+            this.dictionaries = null;
+        }
+    }
+    open(options) {
+        if (!this.closed) {
+            this.autoDestroy = shouldAutoDestroy(this, options);
+            if (!(this.schema || (this.schema = this._reader.readSchema()))) {
+                this.cancel();
+            }
+        }
+        return this;
+    }
+    throw(value) {
+        if (!this.closed && this.autoDestroy && (this.closed = true)) {
+            return this.reset()._reader.throw(value);
+        }
+        return interfaces_js_1.ITERATOR_DONE;
+    }
+    return(value) {
+        if (!this.closed && this.autoDestroy && (this.closed = true)) {
+            return this.reset()._reader.return(value);
+        }
+        return interfaces_js_1.ITERATOR_DONE;
+    }
+    next() {
+        if (this.closed) {
+            return interfaces_js_1.ITERATOR_DONE;
+        }
+        let message;
+        const { _reader: reader } = this;
+        while (message = this._readNextMessageAndValidate()) {
+            if (message.isSchema()) {
+                this.reset(message.header());
+            }
+            else if (message.isRecordBatch()) {
+                this._recordBatchIndex++;
+                const header = message.header();
+                const buffer = reader.readMessageBody(message.bodyLength);
+                const recordBatch = this._loadRecordBatch(header, buffer);
+                return { done: false, value: recordBatch };
+            }
+            else if (message.isDictionaryBatch()) {
+                this._dictionaryIndex++;
+                const header = message.header();
+                const buffer = reader.readMessageBody(message.bodyLength);
+                const vector = this._loadDictionaryBatch(header, buffer);
+                this.dictionaries.set(header.id, vector);
+            }
+        }
+        if (this.schema && this._recordBatchIndex === 0) {
+            this._recordBatchIndex++;
+            return { done: false, value: new recordbatch_js_1._InternalEmptyPlaceholderRecordBatch(this.schema) };
+        }
+        return this.return();
+    }
+    _readNextMessageAndValidate(type) {
+        return this._reader.readMessage(type);
+    }
+}
+/** @ignore */
+class AsyncRecordBatchStreamReaderImpl extends RecordBatchReaderImpl {
+    constructor(source, dictionaries) {
+        super(dictionaries);
+        this._reader = new message_js_1.AsyncMessageReader(this._handle = source);
+    }
+    isAsync() { return true; }
+    isStream() { return true; }
+    [Symbol.asyncIterator]() {
+        return this;
+    }
+    cancel() {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            if (!this.closed && (this.closed = true)) {
+                yield this.reset()._reader.return();
+                this._reader = null;
+                this.dictionaries = null;
+            }
+        });
+    }
+    open(options) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            if (!this.closed) {
+                this.autoDestroy = shouldAutoDestroy(this, options);
+                if (!(this.schema || (this.schema = (yield this._reader.readSchema())))) {
+                    yield this.cancel();
+                }
+            }
+            return this;
+        });
+    }
+    throw(value) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            if (!this.closed && this.autoDestroy && (this.closed = true)) {
+                return yield this.reset()._reader.throw(value);
+            }
+            return interfaces_js_1.ITERATOR_DONE;
+        });
+    }
+    return(value) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            if (!this.closed && this.autoDestroy && (this.closed = true)) {
+                return yield this.reset()._reader.return(value);
+            }
+            return interfaces_js_1.ITERATOR_DONE;
+        });
+    }
+    next() {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            if (this.closed) {
+                return interfaces_js_1.ITERATOR_DONE;
+            }
+            let message;
+            const { _reader: reader } = this;
+            while (message = yield this._readNextMessageAndValidate()) {
+                if (message.isSchema()) {
+                    yield this.reset(message.header());
+                }
+                else if (message.isRecordBatch()) {
+                    this._recordBatchIndex++;
+                    const header = message.header();
+                    const buffer = yield reader.readMessageBody(message.bodyLength);
+                    const recordBatch = this._loadRecordBatch(header, buffer);
+                    return { done: false, value: recordBatch };
+                }
+                else if (message.isDictionaryBatch()) {
+                    this._dictionaryIndex++;
+                    const header = message.header();
+                    const buffer = yield reader.readMessageBody(message.bodyLength);
+                    const vector = this._loadDictionaryBatch(header, buffer);
+                    this.dictionaries.set(header.id, vector);
+                }
+            }
+            if (this.schema && this._recordBatchIndex === 0) {
+                this._recordBatchIndex++;
+                return { done: false, value: new recordbatch_js_1._InternalEmptyPlaceholderRecordBatch(this.schema) };
+            }
+            return yield this.return();
+        });
+    }
+    _readNextMessageAndValidate(type) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            return yield this._reader.readMessage(type);
+        });
+    }
+}
+/** @ignore */
+class RecordBatchFileReaderImpl extends RecordBatchStreamReaderImpl {
+    constructor(source, dictionaries) {
+        super(source instanceof file_js_2.RandomAccessFile ? source : new file_js_2.RandomAccessFile(source), dictionaries);
+    }
+    get footer() { return this._footer; }
+    get numDictionaries() { return this._footer ? this._footer.numDictionaries : 0; }
+    get numRecordBatches() { return this._footer ? this._footer.numRecordBatches : 0; }
+    isSync() { return true; }
+    isFile() { return true; }
+    open(options) {
+        if (!this.closed && !this._footer) {
+            this.schema = (this._footer = this._readFooter()).schema;
+            for (const block of this._footer.dictionaryBatches()) {
+                block && this._readDictionaryBatch(this._dictionaryIndex++);
+            }
+        }
+        return super.open(options);
+    }
+    readRecordBatch(index) {
+        var _a;
+        if (this.closed) {
+            return null;
+        }
+        if (!this._footer) {
+            this.open();
+        }
+        const block = (_a = this._footer) === null || _a === void 0 ? void 0 : _a.getRecordBatch(index);
+        if (block && this._handle.seek(block.offset)) {
+            const message = this._reader.readMessage(enum_js_1.MessageHeader.RecordBatch);
+            if (message === null || message === void 0 ? void 0 : message.isRecordBatch()) {
+                const header = message.header();
+                const buffer = this._reader.readMessageBody(message.bodyLength);
+                const recordBatch = this._loadRecordBatch(header, buffer);
+                return recordBatch;
+            }
+        }
+        return null;
+    }
+    _readDictionaryBatch(index) {
+        var _a;
+        const block = (_a = this._footer) === null || _a === void 0 ? void 0 : _a.getDictionaryBatch(index);
+        if (block && this._handle.seek(block.offset)) {
+            const message = this._reader.readMessage(enum_js_1.MessageHeader.DictionaryBatch);
+            if (message === null || message === void 0 ? void 0 : message.isDictionaryBatch()) {
+                const header = message.header();
+                const buffer = this._reader.readMessageBody(message.bodyLength);
+                const vector = this._loadDictionaryBatch(header, buffer);
+                this.dictionaries.set(header.id, vector);
+            }
+        }
+    }
+    _readFooter() {
+        const { _handle } = this;
+        const offset = _handle.size - message_js_1.magicAndPadding;
+        const length = _handle.readInt32(offset);
+        const buffer = _handle.readAt(offset - length, length);
+        return file_js_1.Footer.decode(buffer);
+    }
+    _readNextMessageAndValidate(type) {
+        var _a;
+        if (!this._footer) {
+            this.open();
+        }
+        if (this._footer && this._recordBatchIndex < this.numRecordBatches) {
+            const block = (_a = this._footer) === null || _a === void 0 ? void 0 : _a.getRecordBatch(this._recordBatchIndex);
+            if (block && this._handle.seek(block.offset)) {
+                return this._reader.readMessage(type);
+            }
+        }
+        return null;
+    }
+}
+/** @ignore */
+class AsyncRecordBatchFileReaderImpl extends AsyncRecordBatchStreamReaderImpl {
+    constructor(source, ...rest) {
+        const byteLength = typeof rest[0] !== 'number' ? rest.shift() : undefined;
+        const dictionaries = rest[0] instanceof Map ? rest.shift() : undefined;
+        super(source instanceof file_js_2.AsyncRandomAccessFile ? source : new file_js_2.AsyncRandomAccessFile(source, byteLength), dictionaries);
+    }
+    get footer() { return this._footer; }
+    get numDictionaries() { return this._footer ? this._footer.numDictionaries : 0; }
+    get numRecordBatches() { return this._footer ? this._footer.numRecordBatches : 0; }
+    isFile() { return true; }
+    isAsync() { return true; }
+    open(options) {
+        const _super = Object.create(null, {
+            open: { get: () => super.open }
+        });
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            if (!this.closed && !this._footer) {
+                this.schema = (this._footer = yield this._readFooter()).schema;
+                for (const block of this._footer.dictionaryBatches()) {
+                    block && (yield this._readDictionaryBatch(this._dictionaryIndex++));
+                }
+            }
+            return yield _super.open.call(this, options);
+        });
+    }
+    readRecordBatch(index) {
+        var _a;
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            if (this.closed) {
+                return null;
+            }
+            if (!this._footer) {
+                yield this.open();
+            }
+            const block = (_a = this._footer) === null || _a === void 0 ? void 0 : _a.getRecordBatch(index);
+            if (block && (yield this._handle.seek(block.offset))) {
+                const message = yield this._reader.readMessage(enum_js_1.MessageHeader.RecordBatch);
+                if (message === null || message === void 0 ? void 0 : message.isRecordBatch()) {
+                    const header = message.header();
+                    const buffer = yield this._reader.readMessageBody(message.bodyLength);
+                    const recordBatch = this._loadRecordBatch(header, buffer);
+                    return recordBatch;
+                }
+            }
+            return null;
+        });
+    }
+    _readDictionaryBatch(index) {
+        var _a;
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            const block = (_a = this._footer) === null || _a === void 0 ? void 0 : _a.getDictionaryBatch(index);
+            if (block && (yield this._handle.seek(block.offset))) {
+                const message = yield this._reader.readMessage(enum_js_1.MessageHeader.DictionaryBatch);
+                if (message === null || message === void 0 ? void 0 : message.isDictionaryBatch()) {
+                    const header = message.header();
+                    const buffer = yield this._reader.readMessageBody(message.bodyLength);
+                    const vector = this._loadDictionaryBatch(header, buffer);
+                    this.dictionaries.set(header.id, vector);
+                }
+            }
+        });
+    }
+    _readFooter() {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            const { _handle } = this;
+            _handle._pending && (yield _handle._pending);
+            const offset = _handle.size - message_js_1.magicAndPadding;
+            const length = yield _handle.readInt32(offset);
+            const buffer = yield _handle.readAt(offset - length, length);
+            return file_js_1.Footer.decode(buffer);
+        });
+    }
+    _readNextMessageAndValidate(type) {
+        return tslib_1.__awaiter(this, void 0, void 0, function* () {
+            if (!this._footer) {
+                yield this.open();
+            }
+            if (this._footer && this._recordBatchIndex < this.numRecordBatches) {
+                const block = this._footer.getRecordBatch(this._recordBatchIndex);
+                if (block && (yield this._handle.seek(block.offset))) {
+                    return yield this._reader.readMessage(type);
+                }
+            }
+            return null;
+        });
+    }
+}
+/** @ignore */
+class RecordBatchJSONReaderImpl extends RecordBatchStreamReaderImpl {
+    constructor(source, dictionaries) {
+        super(source, dictionaries);
+    }
+    _loadVectors(header, body, types) {
+        return new vectorloader_js_1.JSONVectorLoader(body, header.nodes, header.buffers, this.dictionaries).visitMany(types);
+    }
+}
+//
+// Define some helper functions and static implementations down here. There's
+// a bit of branching in the static methods that can lead to the same routines
+// being executed, so we've broken those out here for readability.
+//
+/** @ignore */
+function shouldAutoDestroy(self, options) {
+    return options && (typeof options['autoDestroy'] === 'boolean') ? options['autoDestroy'] : self['autoDestroy'];
+}
+/** @ignore */
+function* readAllSync(source) {
+    const reader = RecordBatchReader.from(source);
+    try {
+        if (!reader.open({ autoDestroy: false }).closed) {
+            do {
+                yield reader;
+            } while (!(reader.reset().open()).closed);
+        }
+    }
+    finally {
+        reader.cancel();
+    }
+}
+/** @ignore */
+function readAllAsync(source) {
+    return tslib_1.__asyncGenerator(this, arguments, function* readAllAsync_1() {
+        const reader = yield tslib_1.__await(RecordBatchReader.from(source));
+        try {
+            if (!(yield tslib_1.__await(reader.open({ autoDestroy: false }))).closed) {
+                do {
+                    yield yield tslib_1.__await(reader);
+                } while (!(yield tslib_1.__await(reader.reset().open())).closed);
+            }
+        }
+        finally {
+            yield tslib_1.__await(reader.cancel());
+        }
+    });
+}
+/** @ignore */
+function fromArrowJSON(source) {
+    return new RecordBatchStreamReader(new RecordBatchJSONReaderImpl(source));
+}
+/** @ignore */
+function fromByteStream(source) {
+    const bytes = source.peek((message_js_1.magicLength + 7) & ~7);
+    return bytes && bytes.byteLength >= 4 ? !(0, message_js_1.checkForMagicArrowString)(bytes)
+        ? new RecordBatchStreamReader(new RecordBatchStreamReaderImpl(source))
+        : new RecordBatchFileReader(new RecordBatchFileReaderImpl(source.read()))
+        : new RecordBatchStreamReader(new RecordBatchStreamReaderImpl(function* () { }()));
+}
+/** @ignore */
+function fromAsyncByteStream(source) {
+    return tslib_1.__awaiter(this, void 0, void 0, function* () {
+        const bytes = yield source.peek((message_js_1.magicLength + 7) & ~7);
+        return bytes && bytes.byteLength >= 4 ? !(0, message_js_1.checkForMagicArrowString)(bytes)
+            ? new AsyncRecordBatchStreamReader(new AsyncRecordBatchStreamReaderImpl(source))
+            : new RecordBatchFileReader(new RecordBatchFileReaderImpl(yield source.read()))
+            : new AsyncRecordBatchStreamReader(new AsyncRecordBatchStreamReaderImpl(function () { return tslib_1.__asyncGenerator(this, arguments, function* () { }); }()));
+    });
+}
+/** @ignore */
+function fromFileHandle(source) {
+    return tslib_1.__awaiter(this, void 0, void 0, function* () {
+        const { size } = yield source.stat();
+        const file = new file_js_2.AsyncRandomAccessFile(source, size);
+        if (size >= message_js_1.magicX2AndPadding && (0, message_js_1.checkForMagicArrowString)(yield file.readAt(0, (message_js_1.magicLength + 7) & ~7))) {
+            return new AsyncRecordBatchFileReader(new AsyncRecordBatchFileReaderImpl(file));
+        }
+        return new AsyncRecordBatchStreamReader(new AsyncRecordBatchStreamReaderImpl(file));
+    });
+}
+
+//# sourceMappingURL=reader.js.map
diff --git a/igv_component/node_modules/apache-arrow/ipc/reader.js.map b/igv_component/node_modules/apache-arrow/ipc/reader.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..f0641bb299d234da27ba60401a9de15835f8eb64
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/reader.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/reader.mjs b/igv_component/node_modules/apache-arrow/ipc/reader.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..e3a025ed36676add02ed0a1ff252027215718bd1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/reader.mjs
@@ -0,0 +1,651 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { __asyncDelegator, __asyncGenerator, __asyncValues, __await, __awaiter } from "tslib";
+import { makeData } from '../data.mjs';
+import { Vector } from '../vector.mjs';
+import { Struct } from '../type.mjs';
+import { MessageHeader } from '../enum.mjs';
+import { Footer } from './metadata/file.mjs';
+import streamAdapters from '../io/adapters.mjs';
+import { ByteStream, AsyncByteStream } from '../io/stream.mjs';
+import { RandomAccessFile, AsyncRandomAccessFile } from '../io/file.mjs';
+import { VectorLoader, JSONVectorLoader } from '../visitor/vectorloader.mjs';
+import { RecordBatch, _InternalEmptyPlaceholderRecordBatch } from '../recordbatch.mjs';
+import { ITERATOR_DONE, ReadableInterop, } from '../io/interfaces.mjs';
+import { MessageReader, AsyncMessageReader, JSONMessageReader, checkForMagicArrowString, magicLength, magicAndPadding, magicX2AndPadding } from './message.mjs';
+import { isPromise, isIterable, isAsyncIterable, isIteratorResult, isArrowJSON, isFileHandle, isFetchResponse, isReadableDOMStream, isReadableNodeStream } from '../util/compat.mjs';
+export class RecordBatchReader extends ReadableInterop {
+    constructor(impl) {
+        super();
+        this._impl = impl;
+    }
+    get closed() { return this._impl.closed; }
+    get schema() { return this._impl.schema; }
+    get autoDestroy() { return this._impl.autoDestroy; }
+    get dictionaries() { return this._impl.dictionaries; }
+    get numDictionaries() { return this._impl.numDictionaries; }
+    get numRecordBatches() { return this._impl.numRecordBatches; }
+    get footer() { return this._impl.isFile() ? this._impl.footer : null; }
+    isSync() { return this._impl.isSync(); }
+    isAsync() { return this._impl.isAsync(); }
+    isFile() { return this._impl.isFile(); }
+    isStream() { return this._impl.isStream(); }
+    next() {
+        return this._impl.next();
+    }
+    throw(value) {
+        return this._impl.throw(value);
+    }
+    return(value) {
+        return this._impl.return(value);
+    }
+    cancel() {
+        return this._impl.cancel();
+    }
+    reset(schema) {
+        this._impl.reset(schema);
+        this._DOMStream = undefined;
+        this._nodeStream = undefined;
+        return this;
+    }
+    open(options) {
+        const opening = this._impl.open(options);
+        return isPromise(opening) ? opening.then(() => this) : this;
+    }
+    readRecordBatch(index) {
+        return this._impl.isFile() ? this._impl.readRecordBatch(index) : null;
+    }
+    [Symbol.iterator]() {
+        return this._impl[Symbol.iterator]();
+    }
+    [Symbol.asyncIterator]() {
+        return this._impl[Symbol.asyncIterator]();
+    }
+    toDOMStream() {
+        return streamAdapters.toDOMStream((this.isSync()
+            ? { [Symbol.iterator]: () => this }
+            : { [Symbol.asyncIterator]: () => this }));
+    }
+    toNodeStream() {
+        return streamAdapters.toNodeStream((this.isSync()
+            ? { [Symbol.iterator]: () => this }
+            : { [Symbol.asyncIterator]: () => this }), { objectMode: true });
+    }
+    /** @nocollapse */
+    // @ts-ignore
+    static throughNode(options) {
+        throw new Error(`"throughNode" not available in this environment`);
+    }
+    /** @nocollapse */
+    static throughDOM(
+    // @ts-ignore
+    writableStrategy, 
+    // @ts-ignore
+    readableStrategy) {
+        throw new Error(`"throughDOM" not available in this environment`);
+    }
+    /** @nocollapse */
+    static from(source) {
+        if (source instanceof RecordBatchReader) {
+            return source;
+        }
+        else if (isArrowJSON(source)) {
+            return fromArrowJSON(source);
+        }
+        else if (isFileHandle(source)) {
+            return fromFileHandle(source);
+        }
+        else if (isPromise(source)) {
+            return (() => __awaiter(this, void 0, void 0, function* () { return yield RecordBatchReader.from(yield source); }))();
+        }
+        else if (isFetchResponse(source) || isReadableDOMStream(source) || isReadableNodeStream(source) || isAsyncIterable(source)) {
+            return fromAsyncByteStream(new AsyncByteStream(source));
+        }
+        return fromByteStream(new ByteStream(source));
+    }
+    /** @nocollapse */
+    static readAll(source) {
+        if (source instanceof RecordBatchReader) {
+            return source.isSync() ? readAllSync(source) : readAllAsync(source);
+        }
+        else if (isArrowJSON(source) || ArrayBuffer.isView(source) || isIterable(source) || isIteratorResult(source)) {
+            return readAllSync(source);
+        }
+        return readAllAsync(source);
+    }
+}
+//
+// Since TS is a structural type system, we define the following subclass stubs
+// so that concrete types exist to associate with with the interfaces below.
+//
+// The implementation for each RecordBatchReader is hidden away in the set of
+// `RecordBatchReaderImpl` classes in the second half of this file. This allows
+// us to export a single RecordBatchReader class, and swap out the impl based
+// on the io primitives or underlying arrow (JSON, file, or stream) at runtime.
+//
+// Async/await makes our job a bit harder, since it forces everything to be
+// either fully sync or fully async. This is why the logic for the reader impls
+// has been duplicated into both sync and async variants. Since the RBR
+// delegates to its impl, an RBR with an AsyncRecordBatchFileReaderImpl for
+// example will return async/await-friendly Promises, but one with a (sync)
+// RecordBatchStreamReaderImpl will always return values. Nothing should be
+// different about their logic, aside from the async handling. This is also why
+// this code looks highly structured, as it should be nearly identical and easy
+// to follow.
+//
+/** @ignore */
+export class RecordBatchStreamReader extends RecordBatchReader {
+    constructor(_impl) {
+        super(_impl);
+        this._impl = _impl;
+    }
+    readAll() { return [...this]; }
+    [Symbol.iterator]() { return this._impl[Symbol.iterator](); }
+    [Symbol.asyncIterator]() { return __asyncGenerator(this, arguments, function* _a() { yield __await(yield* __asyncDelegator(__asyncValues(this[Symbol.iterator]()))); }); }
+}
+/** @ignore */
+export class AsyncRecordBatchStreamReader extends RecordBatchReader {
+    constructor(_impl) {
+        super(_impl);
+        this._impl = _impl;
+    }
+    readAll() {
+        var e_1, _a;
+        return __awaiter(this, void 0, void 0, function* () {
+            const batches = new Array();
+            try {
+                for (var _b = __asyncValues(this), _c; _c = yield _b.next(), !_c.done;) {
+                    const batch = _c.value;
+                    batches.push(batch);
+                }
+            }
+            catch (e_1_1) { e_1 = { error: e_1_1 }; }
+            finally {
+                try {
+                    if (_c && !_c.done && (_a = _b.return)) yield _a.call(_b);
+                }
+                finally { if (e_1) throw e_1.error; }
+            }
+            return batches;
+        });
+    }
+    [Symbol.iterator]() { throw new Error(`AsyncRecordBatchStreamReader is not Iterable`); }
+    [Symbol.asyncIterator]() { return this._impl[Symbol.asyncIterator](); }
+}
+/** @ignore */
+export class RecordBatchFileReader extends RecordBatchStreamReader {
+    constructor(_impl) {
+        super(_impl);
+        this._impl = _impl;
+    }
+}
+/** @ignore */
+export class AsyncRecordBatchFileReader extends AsyncRecordBatchStreamReader {
+    constructor(_impl) {
+        super(_impl);
+        this._impl = _impl;
+    }
+}
+/** @ignore */
+class RecordBatchReaderImpl {
+    constructor(dictionaries = new Map()) {
+        this.closed = false;
+        this.autoDestroy = true;
+        this._dictionaryIndex = 0;
+        this._recordBatchIndex = 0;
+        this.dictionaries = dictionaries;
+    }
+    get numDictionaries() { return this._dictionaryIndex; }
+    get numRecordBatches() { return this._recordBatchIndex; }
+    isSync() { return false; }
+    isAsync() { return false; }
+    isFile() { return false; }
+    isStream() { return false; }
+    reset(schema) {
+        this._dictionaryIndex = 0;
+        this._recordBatchIndex = 0;
+        this.schema = schema;
+        this.dictionaries = new Map();
+        return this;
+    }
+    _loadRecordBatch(header, body) {
+        const children = this._loadVectors(header, body, this.schema.fields);
+        const data = makeData({ type: new Struct(this.schema.fields), length: header.length, children });
+        return new RecordBatch(this.schema, data);
+    }
+    _loadDictionaryBatch(header, body) {
+        const { id, isDelta } = header;
+        const { dictionaries, schema } = this;
+        const dictionary = dictionaries.get(id);
+        if (isDelta || !dictionary) {
+            const type = schema.dictionaries.get(id);
+            const data = this._loadVectors(header.data, body, [type]);
+            return (dictionary && isDelta ? dictionary.concat(new Vector(data)) :
+                new Vector(data)).memoize();
+        }
+        return dictionary.memoize();
+    }
+    _loadVectors(header, body, types) {
+        return new VectorLoader(body, header.nodes, header.buffers, this.dictionaries).visitMany(types);
+    }
+}
+/** @ignore */
+class RecordBatchStreamReaderImpl extends RecordBatchReaderImpl {
+    constructor(source, dictionaries) {
+        super(dictionaries);
+        this._reader = !isArrowJSON(source)
+            ? new MessageReader(this._handle = source)
+            : new JSONMessageReader(this._handle = source);
+    }
+    isSync() { return true; }
+    isStream() { return true; }
+    [Symbol.iterator]() {
+        return this;
+    }
+    cancel() {
+        if (!this.closed && (this.closed = true)) {
+            this.reset()._reader.return();
+            this._reader = null;
+            this.dictionaries = null;
+        }
+    }
+    open(options) {
+        if (!this.closed) {
+            this.autoDestroy = shouldAutoDestroy(this, options);
+            if (!(this.schema || (this.schema = this._reader.readSchema()))) {
+                this.cancel();
+            }
+        }
+        return this;
+    }
+    throw(value) {
+        if (!this.closed && this.autoDestroy && (this.closed = true)) {
+            return this.reset()._reader.throw(value);
+        }
+        return ITERATOR_DONE;
+    }
+    return(value) {
+        if (!this.closed && this.autoDestroy && (this.closed = true)) {
+            return this.reset()._reader.return(value);
+        }
+        return ITERATOR_DONE;
+    }
+    next() {
+        if (this.closed) {
+            return ITERATOR_DONE;
+        }
+        let message;
+        const { _reader: reader } = this;
+        while (message = this._readNextMessageAndValidate()) {
+            if (message.isSchema()) {
+                this.reset(message.header());
+            }
+            else if (message.isRecordBatch()) {
+                this._recordBatchIndex++;
+                const header = message.header();
+                const buffer = reader.readMessageBody(message.bodyLength);
+                const recordBatch = this._loadRecordBatch(header, buffer);
+                return { done: false, value: recordBatch };
+            }
+            else if (message.isDictionaryBatch()) {
+                this._dictionaryIndex++;
+                const header = message.header();
+                const buffer = reader.readMessageBody(message.bodyLength);
+                const vector = this._loadDictionaryBatch(header, buffer);
+                this.dictionaries.set(header.id, vector);
+            }
+        }
+        if (this.schema && this._recordBatchIndex === 0) {
+            this._recordBatchIndex++;
+            return { done: false, value: new _InternalEmptyPlaceholderRecordBatch(this.schema) };
+        }
+        return this.return();
+    }
+    _readNextMessageAndValidate(type) {
+        return this._reader.readMessage(type);
+    }
+}
+/** @ignore */
+class AsyncRecordBatchStreamReaderImpl extends RecordBatchReaderImpl {
+    constructor(source, dictionaries) {
+        super(dictionaries);
+        this._reader = new AsyncMessageReader(this._handle = source);
+    }
+    isAsync() { return true; }
+    isStream() { return true; }
+    [Symbol.asyncIterator]() {
+        return this;
+    }
+    cancel() {
+        return __awaiter(this, void 0, void 0, function* () {
+            if (!this.closed && (this.closed = true)) {
+                yield this.reset()._reader.return();
+                this._reader = null;
+                this.dictionaries = null;
+            }
+        });
+    }
+    open(options) {
+        return __awaiter(this, void 0, void 0, function* () {
+            if (!this.closed) {
+                this.autoDestroy = shouldAutoDestroy(this, options);
+                if (!(this.schema || (this.schema = (yield this._reader.readSchema())))) {
+                    yield this.cancel();
+                }
+            }
+            return this;
+        });
+    }
+    throw(value) {
+        return __awaiter(this, void 0, void 0, function* () {
+            if (!this.closed && this.autoDestroy && (this.closed = true)) {
+                return yield this.reset()._reader.throw(value);
+            }
+            return ITERATOR_DONE;
+        });
+    }
+    return(value) {
+        return __awaiter(this, void 0, void 0, function* () {
+            if (!this.closed && this.autoDestroy && (this.closed = true)) {
+                return yield this.reset()._reader.return(value);
+            }
+            return ITERATOR_DONE;
+        });
+    }
+    next() {
+        return __awaiter(this, void 0, void 0, function* () {
+            if (this.closed) {
+                return ITERATOR_DONE;
+            }
+            let message;
+            const { _reader: reader } = this;
+            while (message = yield this._readNextMessageAndValidate()) {
+                if (message.isSchema()) {
+                    yield this.reset(message.header());
+                }
+                else if (message.isRecordBatch()) {
+                    this._recordBatchIndex++;
+                    const header = message.header();
+                    const buffer = yield reader.readMessageBody(message.bodyLength);
+                    const recordBatch = this._loadRecordBatch(header, buffer);
+                    return { done: false, value: recordBatch };
+                }
+                else if (message.isDictionaryBatch()) {
+                    this._dictionaryIndex++;
+                    const header = message.header();
+                    const buffer = yield reader.readMessageBody(message.bodyLength);
+                    const vector = this._loadDictionaryBatch(header, buffer);
+                    this.dictionaries.set(header.id, vector);
+                }
+            }
+            if (this.schema && this._recordBatchIndex === 0) {
+                this._recordBatchIndex++;
+                return { done: false, value: new _InternalEmptyPlaceholderRecordBatch(this.schema) };
+            }
+            return yield this.return();
+        });
+    }
+    _readNextMessageAndValidate(type) {
+        return __awaiter(this, void 0, void 0, function* () {
+            return yield this._reader.readMessage(type);
+        });
+    }
+}
+/** @ignore */
+class RecordBatchFileReaderImpl extends RecordBatchStreamReaderImpl {
+    constructor(source, dictionaries) {
+        super(source instanceof RandomAccessFile ? source : new RandomAccessFile(source), dictionaries);
+    }
+    get footer() { return this._footer; }
+    get numDictionaries() { return this._footer ? this._footer.numDictionaries : 0; }
+    get numRecordBatches() { return this._footer ? this._footer.numRecordBatches : 0; }
+    isSync() { return true; }
+    isFile() { return true; }
+    open(options) {
+        if (!this.closed && !this._footer) {
+            this.schema = (this._footer = this._readFooter()).schema;
+            for (const block of this._footer.dictionaryBatches()) {
+                block && this._readDictionaryBatch(this._dictionaryIndex++);
+            }
+        }
+        return super.open(options);
+    }
+    readRecordBatch(index) {
+        var _a;
+        if (this.closed) {
+            return null;
+        }
+        if (!this._footer) {
+            this.open();
+        }
+        const block = (_a = this._footer) === null || _a === void 0 ? void 0 : _a.getRecordBatch(index);
+        if (block && this._handle.seek(block.offset)) {
+            const message = this._reader.readMessage(MessageHeader.RecordBatch);
+            if (message === null || message === void 0 ? void 0 : message.isRecordBatch()) {
+                const header = message.header();
+                const buffer = this._reader.readMessageBody(message.bodyLength);
+                const recordBatch = this._loadRecordBatch(header, buffer);
+                return recordBatch;
+            }
+        }
+        return null;
+    }
+    _readDictionaryBatch(index) {
+        var _a;
+        const block = (_a = this._footer) === null || _a === void 0 ? void 0 : _a.getDictionaryBatch(index);
+        if (block && this._handle.seek(block.offset)) {
+            const message = this._reader.readMessage(MessageHeader.DictionaryBatch);
+            if (message === null || message === void 0 ? void 0 : message.isDictionaryBatch()) {
+                const header = message.header();
+                const buffer = this._reader.readMessageBody(message.bodyLength);
+                const vector = this._loadDictionaryBatch(header, buffer);
+                this.dictionaries.set(header.id, vector);
+            }
+        }
+    }
+    _readFooter() {
+        const { _handle } = this;
+        const offset = _handle.size - magicAndPadding;
+        const length = _handle.readInt32(offset);
+        const buffer = _handle.readAt(offset - length, length);
+        return Footer.decode(buffer);
+    }
+    _readNextMessageAndValidate(type) {
+        var _a;
+        if (!this._footer) {
+            this.open();
+        }
+        if (this._footer && this._recordBatchIndex < this.numRecordBatches) {
+            const block = (_a = this._footer) === null || _a === void 0 ? void 0 : _a.getRecordBatch(this._recordBatchIndex);
+            if (block && this._handle.seek(block.offset)) {
+                return this._reader.readMessage(type);
+            }
+        }
+        return null;
+    }
+}
+/** @ignore */
+class AsyncRecordBatchFileReaderImpl extends AsyncRecordBatchStreamReaderImpl {
+    constructor(source, ...rest) {
+        const byteLength = typeof rest[0] !== 'number' ? rest.shift() : undefined;
+        const dictionaries = rest[0] instanceof Map ? rest.shift() : undefined;
+        super(source instanceof AsyncRandomAccessFile ? source : new AsyncRandomAccessFile(source, byteLength), dictionaries);
+    }
+    get footer() { return this._footer; }
+    get numDictionaries() { return this._footer ? this._footer.numDictionaries : 0; }
+    get numRecordBatches() { return this._footer ? this._footer.numRecordBatches : 0; }
+    isFile() { return true; }
+    isAsync() { return true; }
+    open(options) {
+        const _super = Object.create(null, {
+            open: { get: () => super.open }
+        });
+        return __awaiter(this, void 0, void 0, function* () {
+            if (!this.closed && !this._footer) {
+                this.schema = (this._footer = yield this._readFooter()).schema;
+                for (const block of this._footer.dictionaryBatches()) {
+                    block && (yield this._readDictionaryBatch(this._dictionaryIndex++));
+                }
+            }
+            return yield _super.open.call(this, options);
+        });
+    }
+    readRecordBatch(index) {
+        var _a;
+        return __awaiter(this, void 0, void 0, function* () {
+            if (this.closed) {
+                return null;
+            }
+            if (!this._footer) {
+                yield this.open();
+            }
+            const block = (_a = this._footer) === null || _a === void 0 ? void 0 : _a.getRecordBatch(index);
+            if (block && (yield this._handle.seek(block.offset))) {
+                const message = yield this._reader.readMessage(MessageHeader.RecordBatch);
+                if (message === null || message === void 0 ? void 0 : message.isRecordBatch()) {
+                    const header = message.header();
+                    const buffer = yield this._reader.readMessageBody(message.bodyLength);
+                    const recordBatch = this._loadRecordBatch(header, buffer);
+                    return recordBatch;
+                }
+            }
+            return null;
+        });
+    }
+    _readDictionaryBatch(index) {
+        var _a;
+        return __awaiter(this, void 0, void 0, function* () {
+            const block = (_a = this._footer) === null || _a === void 0 ? void 0 : _a.getDictionaryBatch(index);
+            if (block && (yield this._handle.seek(block.offset))) {
+                const message = yield this._reader.readMessage(MessageHeader.DictionaryBatch);
+                if (message === null || message === void 0 ? void 0 : message.isDictionaryBatch()) {
+                    const header = message.header();
+                    const buffer = yield this._reader.readMessageBody(message.bodyLength);
+                    const vector = this._loadDictionaryBatch(header, buffer);
+                    this.dictionaries.set(header.id, vector);
+                }
+            }
+        });
+    }
+    _readFooter() {
+        return __awaiter(this, void 0, void 0, function* () {
+            const { _handle } = this;
+            _handle._pending && (yield _handle._pending);
+            const offset = _handle.size - magicAndPadding;
+            const length = yield _handle.readInt32(offset);
+            const buffer = yield _handle.readAt(offset - length, length);
+            return Footer.decode(buffer);
+        });
+    }
+    _readNextMessageAndValidate(type) {
+        return __awaiter(this, void 0, void 0, function* () {
+            if (!this._footer) {
+                yield this.open();
+            }
+            if (this._footer && this._recordBatchIndex < this.numRecordBatches) {
+                const block = this._footer.getRecordBatch(this._recordBatchIndex);
+                if (block && (yield this._handle.seek(block.offset))) {
+                    return yield this._reader.readMessage(type);
+                }
+            }
+            return null;
+        });
+    }
+}
+/** @ignore */
+class RecordBatchJSONReaderImpl extends RecordBatchStreamReaderImpl {
+    constructor(source, dictionaries) {
+        super(source, dictionaries);
+    }
+    _loadVectors(header, body, types) {
+        return new JSONVectorLoader(body, header.nodes, header.buffers, this.dictionaries).visitMany(types);
+    }
+}
+//
+// Define some helper functions and static implementations down here. There's
+// a bit of branching in the static methods that can lead to the same routines
+// being executed, so we've broken those out here for readability.
+//
+/** @ignore */
+function shouldAutoDestroy(self, options) {
+    return options && (typeof options['autoDestroy'] === 'boolean') ? options['autoDestroy'] : self['autoDestroy'];
+}
+/** @ignore */
+function* readAllSync(source) {
+    const reader = RecordBatchReader.from(source);
+    try {
+        if (!reader.open({ autoDestroy: false }).closed) {
+            do {
+                yield reader;
+            } while (!(reader.reset().open()).closed);
+        }
+    }
+    finally {
+        reader.cancel();
+    }
+}
+/** @ignore */
+function readAllAsync(source) {
+    return __asyncGenerator(this, arguments, function* readAllAsync_1() {
+        const reader = yield __await(RecordBatchReader.from(source));
+        try {
+            if (!(yield __await(reader.open({ autoDestroy: false }))).closed) {
+                do {
+                    yield yield __await(reader);
+                } while (!(yield __await(reader.reset().open())).closed);
+            }
+        }
+        finally {
+            yield __await(reader.cancel());
+        }
+    });
+}
+/** @ignore */
+function fromArrowJSON(source) {
+    return new RecordBatchStreamReader(new RecordBatchJSONReaderImpl(source));
+}
+/** @ignore */
+function fromByteStream(source) {
+    const bytes = source.peek((magicLength + 7) & ~7);
+    return bytes && bytes.byteLength >= 4 ? !checkForMagicArrowString(bytes)
+        ? new RecordBatchStreamReader(new RecordBatchStreamReaderImpl(source))
+        : new RecordBatchFileReader(new RecordBatchFileReaderImpl(source.read()))
+        : new RecordBatchStreamReader(new RecordBatchStreamReaderImpl(function* () { }()));
+}
+/** @ignore */
+function fromAsyncByteStream(source) {
+    return __awaiter(this, void 0, void 0, function* () {
+        const bytes = yield source.peek((magicLength + 7) & ~7);
+        return bytes && bytes.byteLength >= 4 ? !checkForMagicArrowString(bytes)
+            ? new AsyncRecordBatchStreamReader(new AsyncRecordBatchStreamReaderImpl(source))
+            : new RecordBatchFileReader(new RecordBatchFileReaderImpl(yield source.read()))
+            : new AsyncRecordBatchStreamReader(new AsyncRecordBatchStreamReaderImpl(function () { return __asyncGenerator(this, arguments, function* () { }); }()));
+    });
+}
+/** @ignore */
+function fromFileHandle(source) {
+    return __awaiter(this, void 0, void 0, function* () {
+        const { size } = yield source.stat();
+        const file = new AsyncRandomAccessFile(source, size);
+        if (size >= magicX2AndPadding && checkForMagicArrowString(yield file.readAt(0, (magicLength + 7) & ~7))) {
+            return new AsyncRecordBatchFileReader(new AsyncRecordBatchFileReaderImpl(file));
+        }
+        return new AsyncRecordBatchStreamReader(new AsyncRecordBatchStreamReaderImpl(file));
+    });
+}
+
+//# sourceMappingURL=reader.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/ipc/reader.mjs.map b/igv_component/node_modules/apache-arrow/ipc/reader.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..eb37ab98456c5ae01613ed3882e37318dec2336f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/reader.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/serialization.d.ts b/igv_component/node_modules/apache-arrow/ipc/serialization.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6613c8d6f05174c5fbf83cc3d2bfa2b1c26ad0b7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/serialization.d.ts
@@ -0,0 +1,25 @@
+import { Table } from '../table.js';
+import { TypeMap } from '../type.js';
+import { FromArg0, FromArg1, FromArg2, FromArg3, FromArg4, FromArg5, RecordBatchReader, RecordBatchFileReader, RecordBatchStreamReader, AsyncRecordBatchFileReader, AsyncRecordBatchStreamReader } from './reader.js';
+declare type RecordBatchReaders<T extends TypeMap = any> = RecordBatchFileReader<T> | RecordBatchStreamReader<T>;
+declare type AsyncRecordBatchReaders<T extends TypeMap = any> = AsyncRecordBatchFileReader<T> | AsyncRecordBatchStreamReader<T>;
+/**
+ * Deserialize the IPC format into a {@link Table}. This function is a
+ * convenience wrapper for {@link RecordBatchReader}. Opposite of {@link tableToIPC}.
+ */
+export declare function tableFromIPC<T extends TypeMap = any>(source: FromArg0 | FromArg2): Table<T>;
+export declare function tableFromIPC<T extends TypeMap = any>(source: FromArg1): Promise<Table<T>>;
+export declare function tableFromIPC<T extends TypeMap = any>(source: FromArg3 | FromArg4 | FromArg5): Promise<Table<T>>;
+export declare function tableFromIPC<T extends TypeMap = any>(source: RecordBatchReaders<T>): Table<T>;
+export declare function tableFromIPC<T extends TypeMap = any>(source: AsyncRecordBatchReaders<T>): Promise<Table<T>>;
+export declare function tableFromIPC<T extends TypeMap = any>(source: RecordBatchReader<T>): Table<T> | Promise<Table<T>>;
+/**
+ * Serialize a {@link Table} to the IPC format. This function is a convenience
+ * wrapper for {@link RecordBatchStreamWriter} and {@link RecordBatchFileWriter}.
+ * Opposite of {@link tableFromIPC}.
+ *
+ * @param table The Table to serialize.
+ * @param type Whether to serialize the Table as a file or a stream.
+ */
+export declare function tableToIPC<T extends TypeMap = any>(table: Table, type?: 'file' | 'stream'): Uint8Array;
+export {};
diff --git a/igv_component/node_modules/apache-arrow/ipc/serialization.d.ts.map b/igv_component/node_modules/apache-arrow/ipc/serialization.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..c5f628ac842a0bfda66a619fdf21083311824cb1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/serialization.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["ipc/serialization.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,KAAK,EAAE,MAAM,aAAa,CAAC;AACpC,OAAO,EAAE,OAAO,EAAE,MAAM,YAAY,CAAC;AAErC,OAAO,EACH,QAAQ,EAAE,QAAQ,EAAE,QAAQ,EAAE,QAAQ,EAAE,QAAQ,EAAE,QAAQ,EAC1D,iBAAiB,EACjB,qBAAqB,EAAE,uBAAuB,EAC9C,0BAA0B,EAAE,4BAA4B,EAC3D,MAAM,aAAa,CAAC;AAGrB,aAAK,kBAAkB,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,IAAI,qBAAqB,CAAC,CAAC,CAAC,GAAG,uBAAuB,CAAC,CAAC,CAAC,CAAC;AACzG,aAAK,uBAAuB,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,IAAI,0BAA0B,CAAC,CAAC,CAAC,GAAG,4BAA4B,CAAC,CAAC,CAAC,CAAC;AAExH;;;GAGG;AACH,wBAAgB,YAAY,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,EAAE,MAAM,EAAE,QAAQ,GAAG,QAAQ,GAAG,KAAK,CAAC,CAAC,CAAC,CAAC;AAC7F,wBAAgB,YAAY,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,EAAE,MAAM,EAAE,QAAQ,GAAG,OAAO,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC;AAC3F,wBAAgB,YAAY,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,EAAE,MAAM,EAAE,QAAQ,GAAG,QAAQ,GAAG,QAAQ,GAAG,OAAO,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC;AACjH,wBAAgB,YAAY,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,EAAE,MAAM,EAAE,kBAAkB,CAAC,CAAC,CAAC,GAAG,KAAK,CAAC,CAAC,CAAC,CAAC;AAC/F,wBAAgB,YAAY,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,EAAE,MAAM,EAAE,uBAAuB,CAAC,CAAC,CAAC,GAAG,OAAO,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC;AAC7G,wBAAgB,YAAY,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,EAAE,MAAM,EAAE,iBAAiB,CAAC,CAAC,CAAC,GAAG,KAAK,CAAC,CAAC,CAAC,GAAG,OAAO,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC;AAYlH;;;;;;;GAOG;AACH,wBAAgB,UAAU,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,EAAE,KAAK,EAAE,KAAK,EAAE,IAAI,GAAE,MAAM,GAAG,QAAmB,GAAG,UAAU,CAIhH","file":"serialization.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/serialization.js b/igv_component/node_modules/apache-arrow/ipc/serialization.js
new file mode 100644
index 0000000000000000000000000000000000000000..38773181ec5bd7e2acdf1a7400c83453319a210a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/serialization.js
@@ -0,0 +1,50 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.tableToIPC = exports.tableFromIPC = void 0;
+const table_js_1 = require("../table.js");
+const compat_js_1 = require("../util/compat.js");
+const reader_js_1 = require("./reader.js");
+const writer_js_1 = require("./writer.js");
+function tableFromIPC(input) {
+    const reader = reader_js_1.RecordBatchReader.from(input);
+    if ((0, compat_js_1.isPromise)(reader)) {
+        return reader.then((reader) => tableFromIPC(reader));
+    }
+    if (reader.isAsync()) {
+        return reader.readAll().then((xs) => new table_js_1.Table(xs));
+    }
+    return new table_js_1.Table(reader.readAll());
+}
+exports.tableFromIPC = tableFromIPC;
+/**
+ * Serialize a {@link Table} to the IPC format. This function is a convenience
+ * wrapper for {@link RecordBatchStreamWriter} and {@link RecordBatchFileWriter}.
+ * Opposite of {@link tableFromIPC}.
+ *
+ * @param table The Table to serialize.
+ * @param type Whether to serialize the Table as a file or a stream.
+ */
+function tableToIPC(table, type = 'stream') {
+    return (type === 'stream' ? writer_js_1.RecordBatchStreamWriter : writer_js_1.RecordBatchFileWriter)
+        .writeAll(table)
+        .toUint8Array(true);
+}
+exports.tableToIPC = tableToIPC;
+
+//# sourceMappingURL=serialization.js.map
diff --git a/igv_component/node_modules/apache-arrow/ipc/serialization.js.map b/igv_component/node_modules/apache-arrow/ipc/serialization.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..b22900621ce55730960bf7e393b6e2cb36ba7571
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/serialization.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["ipc/serialization.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,0CAAoC;AAEpC,iDAA8C;AAC9C,2CAKqB;AACrB,2CAA6E;AAe7E,SAAgB,YAAY,CAA0B,KAAU;IAC5D,MAAM,MAAM,GAAG,6BAAiB,CAAC,IAAI,CAAI,KAAK,CAAyD,CAAC;IACxG,IAAI,IAAA,qBAAS,EAAuB,MAAM,CAAC,EAAE;QACzC,OAAO,MAAM,CAAC,IAAI,CAAC,CAAC,MAAM,EAAE,EAAE,CAAC,YAAY,CAAC,MAAM,CAAC,CAAsB,CAAC;KAC7E;IACD,IAAI,MAAM,CAAC,OAAO,EAAE,EAAE;QAClB,OAAQ,MAAqC,CAAC,OAAO,EAAE,CAAC,IAAI,CAAC,CAAC,EAAE,EAAE,EAAE,CAAC,IAAI,gBAAK,CAAC,EAAE,CAAC,CAAC,CAAC;KACvF;IACD,OAAO,IAAI,gBAAK,CAAE,MAAgC,CAAC,OAAO,EAAE,CAAC,CAAC;AAClE,CAAC;AATD,oCASC;AAED;;;;;;;GAOG;AACH,SAAgB,UAAU,CAA0B,KAAY,EAAE,OAA0B,QAAQ;IAChG,OAAO,CAAC,IAAI,KAAK,QAAQ,CAAC,CAAC,CAAC,mCAAuB,CAAC,CAAC,CAAC,iCAAqB,CAAC;SACvE,QAAQ,CAAI,KAAK,CAAC;SAClB,YAAY,CAAC,IAAI,CAAC,CAAC;AAC5B,CAAC;AAJD,gCAIC","file":"serialization.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/serialization.mjs b/igv_component/node_modules/apache-arrow/ipc/serialization.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..dba37d3ad06babf18d8475502b41cea594db73db
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/serialization.mjs
@@ -0,0 +1,45 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Table } from '../table.mjs';
+import { isPromise } from '../util/compat.mjs';
+import { RecordBatchReader } from './reader.mjs';
+import { RecordBatchFileWriter, RecordBatchStreamWriter } from './writer.mjs';
+export function tableFromIPC(input) {
+    const reader = RecordBatchReader.from(input);
+    if (isPromise(reader)) {
+        return reader.then((reader) => tableFromIPC(reader));
+    }
+    if (reader.isAsync()) {
+        return reader.readAll().then((xs) => new Table(xs));
+    }
+    return new Table(reader.readAll());
+}
+/**
+ * Serialize a {@link Table} to the IPC format. This function is a convenience
+ * wrapper for {@link RecordBatchStreamWriter} and {@link RecordBatchFileWriter}.
+ * Opposite of {@link tableFromIPC}.
+ *
+ * @param table The Table to serialize.
+ * @param type Whether to serialize the Table as a file or a stream.
+ */
+export function tableToIPC(table, type = 'stream') {
+    return (type === 'stream' ? RecordBatchStreamWriter : RecordBatchFileWriter)
+        .writeAll(table)
+        .toUint8Array(true);
+}
+
+//# sourceMappingURL=serialization.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/ipc/serialization.mjs.map b/igv_component/node_modules/apache-arrow/ipc/serialization.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..1ff4fe7137979bfc5758ad2c5d54788fa8e63882
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/serialization.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["ipc/serialization.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,EAAE,KAAK,EAAE,MAAM,aAAa,CAAC;AAEpC,OAAO,EAAE,SAAS,EAAE,MAAM,mBAAmB,CAAC;AAC9C,OAAO,EAEH,iBAAiB,EAGpB,MAAM,aAAa,CAAC;AACrB,OAAO,EAAE,qBAAqB,EAAE,uBAAuB,EAAE,MAAM,aAAa,CAAC;AAe7E,MAAM,UAAU,YAAY,CAA0B,KAAU;IAC5D,MAAM,MAAM,GAAG,iBAAiB,CAAC,IAAI,CAAI,KAAK,CAAyD,CAAC;IACxG,IAAI,SAAS,CAAuB,MAAM,CAAC,EAAE;QACzC,OAAO,MAAM,CAAC,IAAI,CAAC,CAAC,MAAM,EAAE,EAAE,CAAC,YAAY,CAAC,MAAM,CAAC,CAAsB,CAAC;KAC7E;IACD,IAAI,MAAM,CAAC,OAAO,EAAE,EAAE;QAClB,OAAQ,MAAqC,CAAC,OAAO,EAAE,CAAC,IAAI,CAAC,CAAC,EAAE,EAAE,EAAE,CAAC,IAAI,KAAK,CAAC,EAAE,CAAC,CAAC,CAAC;KACvF;IACD,OAAO,IAAI,KAAK,CAAE,MAAgC,CAAC,OAAO,EAAE,CAAC,CAAC;AAClE,CAAC;AAED;;;;;;;GAOG;AACH,MAAM,UAAU,UAAU,CAA0B,KAAY,EAAE,OAA0B,QAAQ;IAChG,OAAO,CAAC,IAAI,KAAK,QAAQ,CAAC,CAAC,CAAC,uBAAuB,CAAC,CAAC,CAAC,qBAAqB,CAAC;SACvE,QAAQ,CAAI,KAAK,CAAC;SAClB,YAAY,CAAC,IAAI,CAAC,CAAC;AAC5B,CAAC","file":"serialization.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/writer.d.ts b/igv_component/node_modules/apache-arrow/ipc/writer.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e233c15191510fbedf311332f884e6fed760bdf4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/writer.d.ts
@@ -0,0 +1,112 @@
+/// <reference types="node" />
+import { Data } from '../data.js';
+import { Table } from '../table.js';
+import { TypeMap } from '../type.js';
+import { Schema } from '../schema.js';
+import { Message } from './metadata/message.js';
+import { FileBlock } from './metadata/file.js';
+import { MessageHeader } from '../enum.js';
+import { WritableSink, AsyncByteQueue } from '../io/stream.js';
+import { ArrayBufferViewInput } from '../util/buffer.js';
+import { RecordBatch } from '../recordbatch.js';
+import { Writable, ReadableInterop, ReadableDOMStreamOptions } from '../io/interfaces.js';
+export interface RecordBatchStreamWriterOptions {
+    /**
+     *
+     */
+    autoDestroy?: boolean;
+    /**
+     * A flag indicating whether the RecordBatchWriter should construct pre-0.15.0
+     * encapsulated IPC Messages, which reserves  4 bytes for the Message metadata
+     * length instead of 8.
+     * @see https://issues.apache.org/jira/browse/ARROW-6313
+     */
+    writeLegacyIpcFormat?: boolean;
+}
+export declare class RecordBatchWriter<T extends TypeMap = any> extends ReadableInterop<Uint8Array> implements Writable<RecordBatch<T>> {
+    /** @nocollapse */
+    static throughNode(options?: import('stream').DuplexOptions & {
+        autoDestroy: boolean;
+    }): import('stream').Duplex;
+    /** @nocollapse */
+    static throughDOM<T extends TypeMap>(writableStrategy?: QueuingStrategy<RecordBatch<T>> & {
+        autoDestroy: boolean;
+    }, readableStrategy?: {
+        highWaterMark?: number;
+        size?: any;
+    }): {
+        writable: WritableStream<Table<T> | RecordBatch<T>>;
+        readable: ReadableStream<Uint8Array>;
+    };
+    constructor(options?: RecordBatchStreamWriterOptions);
+    protected _position: number;
+    protected _started: boolean;
+    protected _autoDestroy: boolean;
+    protected _writeLegacyIpcFormat: boolean;
+    protected _sink: AsyncByteQueue<Uint8Array>;
+    protected _schema: Schema | null;
+    protected _dictionaryBlocks: FileBlock[];
+    protected _recordBatchBlocks: FileBlock[];
+    protected _dictionaryDeltaOffsets: Map<number, number>;
+    toString(sync: true): string;
+    toString(sync?: false): Promise<string>;
+    toUint8Array(sync: true): Uint8Array;
+    toUint8Array(sync?: false): Promise<Uint8Array>;
+    writeAll(input: Table<T> | Iterable<RecordBatch<T>>): this;
+    writeAll(input: AsyncIterable<RecordBatch<T>>): Promise<this>;
+    writeAll(input: PromiseLike<AsyncIterable<RecordBatch<T>>>): Promise<this>;
+    writeAll(input: PromiseLike<Table<T> | Iterable<RecordBatch<T>>>): Promise<this>;
+    get closed(): Promise<void>;
+    [Symbol.asyncIterator](): AsyncByteQueue<Uint8Array>;
+    toDOMStream(options?: ReadableDOMStreamOptions): ReadableStream<Uint8Array>;
+    toNodeStream(options?: import('stream').ReadableOptions): import("stream").Readable;
+    close(): void;
+    abort(reason?: any): void;
+    finish(): this;
+    reset(sink?: WritableSink<ArrayBufferViewInput>, schema?: Schema<T> | null): this;
+    write(payload?: Table<T> | RecordBatch<T> | Iterable<RecordBatch<T>> | null): void;
+    protected _writeMessage<T extends MessageHeader>(message: Message<T>, alignment?: number): this;
+    protected _write(chunk: ArrayBufferViewInput): this;
+    protected _writeSchema(schema: Schema<T>): this;
+    protected _writeFooter(schema: Schema<T>): this;
+    protected _writeMagic(): this;
+    protected _writePadding(nBytes: number): this;
+    protected _writeRecordBatch(batch: RecordBatch<T>): this;
+    protected _writeDictionaryBatch(dictionary: Data, id: number, isDelta?: boolean): this;
+    protected _writeBodyBuffers(buffers: ArrayBufferView[]): this;
+    protected _writeDictionaries(batch: RecordBatch<T>): this;
+}
+/** @ignore */
+export declare class RecordBatchStreamWriter<T extends TypeMap = any> extends RecordBatchWriter<T> {
+    static writeAll<T extends TypeMap = any>(input: Table<T> | Iterable<RecordBatch<T>>, options?: RecordBatchStreamWriterOptions): RecordBatchStreamWriter<T>;
+    static writeAll<T extends TypeMap = any>(input: AsyncIterable<RecordBatch<T>>, options?: RecordBatchStreamWriterOptions): Promise<RecordBatchStreamWriter<T>>;
+    static writeAll<T extends TypeMap = any>(input: PromiseLike<AsyncIterable<RecordBatch<T>>>, options?: RecordBatchStreamWriterOptions): Promise<RecordBatchStreamWriter<T>>;
+    static writeAll<T extends TypeMap = any>(input: PromiseLike<Table<T> | Iterable<RecordBatch<T>>>, options?: RecordBatchStreamWriterOptions): Promise<RecordBatchStreamWriter<T>>;
+}
+/** @ignore */
+export declare class RecordBatchFileWriter<T extends TypeMap = any> extends RecordBatchWriter<T> {
+    static writeAll<T extends TypeMap = any>(input: Table<T> | Iterable<RecordBatch<T>>): RecordBatchFileWriter<T>;
+    static writeAll<T extends TypeMap = any>(input: AsyncIterable<RecordBatch<T>>): Promise<RecordBatchFileWriter<T>>;
+    static writeAll<T extends TypeMap = any>(input: PromiseLike<AsyncIterable<RecordBatch<T>>>): Promise<RecordBatchFileWriter<T>>;
+    static writeAll<T extends TypeMap = any>(input: PromiseLike<Table<T> | Iterable<RecordBatch<T>>>): Promise<RecordBatchFileWriter<T>>;
+    constructor();
+    protected _writeSchema(schema: Schema<T>): this;
+    protected _writeFooter(schema: Schema<T>): this;
+}
+/** @ignore */
+export declare class RecordBatchJSONWriter<T extends TypeMap = any> extends RecordBatchWriter<T> {
+    static writeAll<T extends TypeMap = any>(this: typeof RecordBatchWriter, input: Table<T> | Iterable<RecordBatch<T>>): RecordBatchJSONWriter<T>;
+    static writeAll<T extends TypeMap = any>(this: typeof RecordBatchWriter, input: AsyncIterable<RecordBatch<T>>): Promise<RecordBatchJSONWriter<T>>;
+    static writeAll<T extends TypeMap = any>(this: typeof RecordBatchWriter, input: PromiseLike<AsyncIterable<RecordBatch<T>>>): Promise<RecordBatchJSONWriter<T>>;
+    static writeAll<T extends TypeMap = any>(this: typeof RecordBatchWriter, input: PromiseLike<Table<T> | Iterable<RecordBatch<T>>>): Promise<RecordBatchJSONWriter<T>>;
+    private _recordBatches;
+    private _dictionaries;
+    constructor();
+    protected _writeMessage(): this;
+    protected _writeFooter(schema: Schema<T>): this;
+    protected _writeSchema(schema: Schema<T>): this;
+    protected _writeDictionaries(batch: RecordBatch<T>): this;
+    protected _writeDictionaryBatch(dictionary: Data, id: number, isDelta?: boolean): this;
+    protected _writeRecordBatch(batch: RecordBatch<T>): this;
+    close(): void;
+}
diff --git a/igv_component/node_modules/apache-arrow/ipc/writer.d.ts.map b/igv_component/node_modules/apache-arrow/ipc/writer.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..d53121be6c069a8924e2802a80f3625185f7e58b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/writer.d.ts.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/writer.js b/igv_component/node_modules/apache-arrow/ipc/writer.js
new file mode 100644
index 0000000000000000000000000000000000000000..56ae69b8aff1b8634059e82a2bce17bdb9471a91
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/writer.js
@@ -0,0 +1,433 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.RecordBatchJSONWriter = exports.RecordBatchFileWriter = exports.RecordBatchStreamWriter = exports.RecordBatchWriter = void 0;
+const tslib_1 = require("tslib");
+const table_js_1 = require("../table.js");
+const message_js_1 = require("./message.js");
+const vector_js_1 = require("../vector.js");
+const type_js_1 = require("../type.js");
+const message_js_2 = require("./metadata/message.js");
+const metadata = tslib_1.__importStar(require("./metadata/message.js"));
+const file_js_1 = require("./metadata/file.js");
+const enum_js_1 = require("../enum.js");
+const typecomparator_js_1 = require("../visitor/typecomparator.js");
+const stream_js_1 = require("../io/stream.js");
+const vectorassembler_js_1 = require("../visitor/vectorassembler.js");
+const jsontypeassembler_js_1 = require("../visitor/jsontypeassembler.js");
+const jsonvectorassembler_js_1 = require("../visitor/jsonvectorassembler.js");
+const buffer_js_1 = require("../util/buffer.js");
+const recordbatch_js_1 = require("../recordbatch.js");
+const interfaces_js_1 = require("../io/interfaces.js");
+const compat_js_1 = require("../util/compat.js");
+class RecordBatchWriter extends interfaces_js_1.ReadableInterop {
+    constructor(options) {
+        super();
+        this._position = 0;
+        this._started = false;
+        // @ts-ignore
+        this._sink = new stream_js_1.AsyncByteQueue();
+        this._schema = null;
+        this._dictionaryBlocks = [];
+        this._recordBatchBlocks = [];
+        this._dictionaryDeltaOffsets = new Map();
+        (0, compat_js_1.isObject)(options) || (options = { autoDestroy: true, writeLegacyIpcFormat: false });
+        this._autoDestroy = (typeof options.autoDestroy === 'boolean') ? options.autoDestroy : true;
+        this._writeLegacyIpcFormat = (typeof options.writeLegacyIpcFormat === 'boolean') ? options.writeLegacyIpcFormat : false;
+    }
+    /** @nocollapse */
+    // @ts-ignore
+    static throughNode(options) {
+        throw new Error(`"throughNode" not available in this environment`);
+    }
+    /** @nocollapse */
+    static throughDOM(
+    // @ts-ignore
+    writableStrategy, 
+    // @ts-ignore
+    readableStrategy) {
+        throw new Error(`"throughDOM" not available in this environment`);
+    }
+    toString(sync = false) {
+        return this._sink.toString(sync);
+    }
+    toUint8Array(sync = false) {
+        return this._sink.toUint8Array(sync);
+    }
+    writeAll(input) {
+        if ((0, compat_js_1.isPromise)(input)) {
+            return input.then((x) => this.writeAll(x));
+        }
+        else if ((0, compat_js_1.isAsyncIterable)(input)) {
+            return writeAllAsync(this, input);
+        }
+        return writeAll(this, input);
+    }
+    get closed() { return this._sink.closed; }
+    [Symbol.asyncIterator]() { return this._sink[Symbol.asyncIterator](); }
+    toDOMStream(options) { return this._sink.toDOMStream(options); }
+    toNodeStream(options) { return this._sink.toNodeStream(options); }
+    close() {
+        return this.reset()._sink.close();
+    }
+    abort(reason) {
+        return this.reset()._sink.abort(reason);
+    }
+    finish() {
+        this._autoDestroy ? this.close() : this.reset(this._sink, this._schema);
+        return this;
+    }
+    reset(sink = this._sink, schema = null) {
+        if ((sink === this._sink) || (sink instanceof stream_js_1.AsyncByteQueue)) {
+            this._sink = sink;
+        }
+        else {
+            this._sink = new stream_js_1.AsyncByteQueue();
+            if (sink && (0, compat_js_1.isWritableDOMStream)(sink)) {
+                this.toDOMStream({ type: 'bytes' }).pipeTo(sink);
+            }
+            else if (sink && (0, compat_js_1.isWritableNodeStream)(sink)) {
+                this.toNodeStream({ objectMode: false }).pipe(sink);
+            }
+        }
+        if (this._started && this._schema) {
+            this._writeFooter(this._schema);
+        }
+        this._started = false;
+        this._dictionaryBlocks = [];
+        this._recordBatchBlocks = [];
+        this._dictionaryDeltaOffsets = new Map();
+        if (!schema || !((0, typecomparator_js_1.compareSchemas)(schema, this._schema))) {
+            if (schema == null) {
+                this._position = 0;
+                this._schema = null;
+            }
+            else {
+                this._started = true;
+                this._schema = schema;
+                this._writeSchema(schema);
+            }
+        }
+        return this;
+    }
+    write(payload) {
+        let schema = null;
+        if (!this._sink) {
+            throw new Error(`RecordBatchWriter is closed`);
+        }
+        else if (payload == null) {
+            return this.finish() && undefined;
+        }
+        else if (payload instanceof table_js_1.Table && !(schema = payload.schema)) {
+            return this.finish() && undefined;
+        }
+        else if (payload instanceof recordbatch_js_1.RecordBatch && !(schema = payload.schema)) {
+            return this.finish() && undefined;
+        }
+        if (schema && !(0, typecomparator_js_1.compareSchemas)(schema, this._schema)) {
+            if (this._started && this._autoDestroy) {
+                return this.close();
+            }
+            this.reset(this._sink, schema);
+        }
+        if (payload instanceof recordbatch_js_1.RecordBatch) {
+            if (!(payload instanceof recordbatch_js_1._InternalEmptyPlaceholderRecordBatch)) {
+                this._writeRecordBatch(payload);
+            }
+        }
+        else if (payload instanceof table_js_1.Table) {
+            this.writeAll(payload.batches);
+        }
+        else if ((0, compat_js_1.isIterable)(payload)) {
+            this.writeAll(payload);
+        }
+    }
+    _writeMessage(message, alignment = 8) {
+        const a = alignment - 1;
+        const buffer = message_js_2.Message.encode(message);
+        const flatbufferSize = buffer.byteLength;
+        const prefixSize = !this._writeLegacyIpcFormat ? 8 : 4;
+        const alignedSize = (flatbufferSize + prefixSize + a) & ~a;
+        const nPaddingBytes = alignedSize - flatbufferSize - prefixSize;
+        if (message.headerType === enum_js_1.MessageHeader.RecordBatch) {
+            this._recordBatchBlocks.push(new file_js_1.FileBlock(alignedSize, message.bodyLength, this._position));
+        }
+        else if (message.headerType === enum_js_1.MessageHeader.DictionaryBatch) {
+            this._dictionaryBlocks.push(new file_js_1.FileBlock(alignedSize, message.bodyLength, this._position));
+        }
+        // If not in legacy pre-0.15.0 mode, write the stream continuation indicator
+        if (!this._writeLegacyIpcFormat) {
+            this._write(Int32Array.of(-1));
+        }
+        // Write the flatbuffer size prefix including padding
+        this._write(Int32Array.of(alignedSize - prefixSize));
+        // Write the flatbuffer
+        if (flatbufferSize > 0) {
+            this._write(buffer);
+        }
+        // Write any padding
+        return this._writePadding(nPaddingBytes);
+    }
+    _write(chunk) {
+        if (this._started) {
+            const buffer = (0, buffer_js_1.toUint8Array)(chunk);
+            if (buffer && buffer.byteLength > 0) {
+                this._sink.write(buffer);
+                this._position += buffer.byteLength;
+            }
+        }
+        return this;
+    }
+    _writeSchema(schema) {
+        return this._writeMessage(message_js_2.Message.from(schema));
+    }
+    // @ts-ignore
+    _writeFooter(schema) {
+        // eos bytes
+        return this._writeLegacyIpcFormat
+            ? this._write(Int32Array.of(0))
+            : this._write(Int32Array.of(-1, 0));
+    }
+    _writeMagic() {
+        return this._write(message_js_1.MAGIC);
+    }
+    _writePadding(nBytes) {
+        return nBytes > 0 ? this._write(new Uint8Array(nBytes)) : this;
+    }
+    _writeRecordBatch(batch) {
+        const { byteLength, nodes, bufferRegions, buffers } = vectorassembler_js_1.VectorAssembler.assemble(batch);
+        const recordBatch = new metadata.RecordBatch(batch.numRows, nodes, bufferRegions);
+        const message = message_js_2.Message.from(recordBatch, byteLength);
+        return this
+            ._writeDictionaries(batch)
+            ._writeMessage(message)
+            ._writeBodyBuffers(buffers);
+    }
+    _writeDictionaryBatch(dictionary, id, isDelta = false) {
+        this._dictionaryDeltaOffsets.set(id, dictionary.length + (this._dictionaryDeltaOffsets.get(id) || 0));
+        const { byteLength, nodes, bufferRegions, buffers } = vectorassembler_js_1.VectorAssembler.assemble(new vector_js_1.Vector([dictionary]));
+        const recordBatch = new metadata.RecordBatch(dictionary.length, nodes, bufferRegions);
+        const dictionaryBatch = new metadata.DictionaryBatch(recordBatch, id, isDelta);
+        const message = message_js_2.Message.from(dictionaryBatch, byteLength);
+        return this
+            ._writeMessage(message)
+            ._writeBodyBuffers(buffers);
+    }
+    _writeBodyBuffers(buffers) {
+        let buffer;
+        let size, padding;
+        for (let i = -1, n = buffers.length; ++i < n;) {
+            if ((buffer = buffers[i]) && (size = buffer.byteLength) > 0) {
+                this._write(buffer);
+                if ((padding = ((size + 7) & ~7) - size) > 0) {
+                    this._writePadding(padding);
+                }
+            }
+        }
+        return this;
+    }
+    _writeDictionaries(batch) {
+        for (let [id, dictionary] of batch.dictionaries) {
+            let offset = this._dictionaryDeltaOffsets.get(id) || 0;
+            if (offset === 0 || (dictionary = dictionary === null || dictionary === void 0 ? void 0 : dictionary.slice(offset)).length > 0) {
+                for (const data of dictionary.data) {
+                    this._writeDictionaryBatch(data, id, offset > 0);
+                    offset += data.length;
+                }
+            }
+        }
+        return this;
+    }
+}
+exports.RecordBatchWriter = RecordBatchWriter;
+/** @ignore */
+class RecordBatchStreamWriter extends RecordBatchWriter {
+    /** @nocollapse */
+    static writeAll(input, options) {
+        const writer = new RecordBatchStreamWriter(options);
+        if ((0, compat_js_1.isPromise)(input)) {
+            return input.then((x) => writer.writeAll(x));
+        }
+        else if ((0, compat_js_1.isAsyncIterable)(input)) {
+            return writeAllAsync(writer, input);
+        }
+        return writeAll(writer, input);
+    }
+}
+exports.RecordBatchStreamWriter = RecordBatchStreamWriter;
+/** @ignore */
+class RecordBatchFileWriter extends RecordBatchWriter {
+    /** @nocollapse */
+    static writeAll(input) {
+        const writer = new RecordBatchFileWriter();
+        if ((0, compat_js_1.isPromise)(input)) {
+            return input.then((x) => writer.writeAll(x));
+        }
+        else if ((0, compat_js_1.isAsyncIterable)(input)) {
+            return writeAllAsync(writer, input);
+        }
+        return writeAll(writer, input);
+    }
+    constructor() {
+        super();
+        this._autoDestroy = true;
+    }
+    // @ts-ignore
+    _writeSchema(schema) {
+        return this._writeMagic()._writePadding(2);
+    }
+    _writeFooter(schema) {
+        const buffer = file_js_1.Footer.encode(new file_js_1.Footer(schema, enum_js_1.MetadataVersion.V4, this._recordBatchBlocks, this._dictionaryBlocks));
+        return super
+            ._writeFooter(schema) // EOS bytes for sequential readers
+            ._write(buffer) // Write the flatbuffer
+            ._write(Int32Array.of(buffer.byteLength)) // then the footer size suffix
+            ._writeMagic(); // then the magic suffix
+    }
+}
+exports.RecordBatchFileWriter = RecordBatchFileWriter;
+/** @ignore */
+class RecordBatchJSONWriter extends RecordBatchWriter {
+    constructor() {
+        super();
+        this._autoDestroy = true;
+        this._recordBatches = [];
+        this._dictionaries = [];
+    }
+    /** @nocollapse */
+    static writeAll(input) {
+        return new RecordBatchJSONWriter().writeAll(input);
+    }
+    _writeMessage() { return this; }
+    // @ts-ignore
+    _writeFooter(schema) { return this; }
+    _writeSchema(schema) {
+        return this._write(`{\n  "schema": ${JSON.stringify({ fields: schema.fields.map(field => fieldToJSON(field)) }, null, 2)}`);
+    }
+    _writeDictionaries(batch) {
+        if (batch.dictionaries.size > 0) {
+            this._dictionaries.push(batch);
+        }
+        return this;
+    }
+    _writeDictionaryBatch(dictionary, id, isDelta = false) {
+        this._dictionaryDeltaOffsets.set(id, dictionary.length + (this._dictionaryDeltaOffsets.get(id) || 0));
+        this._write(this._dictionaryBlocks.length === 0 ? `    ` : `,\n    `);
+        this._write(`${dictionaryBatchToJSON(dictionary, id, isDelta)}`);
+        this._dictionaryBlocks.push(new file_js_1.FileBlock(0, 0, 0));
+        return this;
+    }
+    _writeRecordBatch(batch) {
+        this._writeDictionaries(batch);
+        this._recordBatches.push(batch);
+        return this;
+    }
+    close() {
+        if (this._dictionaries.length > 0) {
+            this._write(`,\n  "dictionaries": [\n`);
+            for (const batch of this._dictionaries) {
+                super._writeDictionaries(batch);
+            }
+            this._write(`\n  ]`);
+        }
+        if (this._recordBatches.length > 0) {
+            for (let i = -1, n = this._recordBatches.length; ++i < n;) {
+                this._write(i === 0 ? `,\n  "batches": [\n    ` : `,\n    `);
+                this._write(`${recordBatchToJSON(this._recordBatches[i])}`);
+                this._recordBatchBlocks.push(new file_js_1.FileBlock(0, 0, 0));
+            }
+            this._write(`\n  ]`);
+        }
+        if (this._schema) {
+            this._write(`\n}`);
+        }
+        this._dictionaries = [];
+        this._recordBatches = [];
+        return super.close();
+    }
+}
+exports.RecordBatchJSONWriter = RecordBatchJSONWriter;
+/** @ignore */
+function writeAll(writer, input) {
+    let chunks = input;
+    if (input instanceof table_js_1.Table) {
+        chunks = input.batches;
+        writer.reset(undefined, input.schema);
+    }
+    for (const batch of chunks) {
+        writer.write(batch);
+    }
+    return writer.finish();
+}
+/** @ignore */
+function writeAllAsync(writer, batches) {
+    var batches_1, batches_1_1;
+    var e_1, _a;
+    return tslib_1.__awaiter(this, void 0, void 0, function* () {
+        try {
+            for (batches_1 = tslib_1.__asyncValues(batches); batches_1_1 = yield batches_1.next(), !batches_1_1.done;) {
+                const batch = batches_1_1.value;
+                writer.write(batch);
+            }
+        }
+        catch (e_1_1) { e_1 = { error: e_1_1 }; }
+        finally {
+            try {
+                if (batches_1_1 && !batches_1_1.done && (_a = batches_1.return)) yield _a.call(batches_1);
+            }
+            finally { if (e_1) throw e_1.error; }
+        }
+        return writer.finish();
+    });
+}
+/** @ignore */
+function fieldToJSON({ name, type, nullable }) {
+    const assembler = new jsontypeassembler_js_1.JSONTypeAssembler();
+    return {
+        'name': name, 'nullable': nullable,
+        'type': assembler.visit(type),
+        'children': (type.children || []).map((field) => fieldToJSON(field)),
+        'dictionary': !type_js_1.DataType.isDictionary(type) ? undefined : {
+            'id': type.id,
+            'isOrdered': type.isOrdered,
+            'indexType': assembler.visit(type.indices)
+        }
+    };
+}
+/** @ignore */
+function dictionaryBatchToJSON(dictionary, id, isDelta = false) {
+    const [columns] = jsonvectorassembler_js_1.JSONVectorAssembler.assemble(new recordbatch_js_1.RecordBatch({ [id]: dictionary }));
+    return JSON.stringify({
+        'id': id,
+        'isDelta': isDelta,
+        'data': {
+            'count': dictionary.length,
+            'columns': columns
+        }
+    }, null, 2);
+}
+/** @ignore */
+function recordBatchToJSON(records) {
+    const [columns] = jsonvectorassembler_js_1.JSONVectorAssembler.assemble(records);
+    return JSON.stringify({
+        'count': records.numRows,
+        'columns': columns
+    }, null, 2);
+}
+
+//# sourceMappingURL=writer.js.map
diff --git a/igv_component/node_modules/apache-arrow/ipc/writer.js.map b/igv_component/node_modules/apache-arrow/ipc/writer.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..7b85306fe2ee93f53a93ab93e0ac8b22e096af58
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/writer.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/ipc/writer.mjs b/igv_component/node_modules/apache-arrow/ipc/writer.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..abb7bfabe299a94a40aaf59b0ce587102ac38ffc
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/writer.mjs
@@ -0,0 +1,426 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { __asyncValues, __awaiter } from "tslib";
+import { Table } from '../table.mjs';
+import { MAGIC } from './message.mjs';
+import { Vector } from '../vector.mjs';
+import { DataType } from '../type.mjs';
+import { Message } from './metadata/message.mjs';
+import * as metadata from './metadata/message.mjs';
+import { FileBlock, Footer } from './metadata/file.mjs';
+import { MessageHeader, MetadataVersion } from '../enum.mjs';
+import { compareSchemas } from '../visitor/typecomparator.mjs';
+import { AsyncByteQueue } from '../io/stream.mjs';
+import { VectorAssembler } from '../visitor/vectorassembler.mjs';
+import { JSONTypeAssembler } from '../visitor/jsontypeassembler.mjs';
+import { JSONVectorAssembler } from '../visitor/jsonvectorassembler.mjs';
+import { toUint8Array } from '../util/buffer.mjs';
+import { RecordBatch, _InternalEmptyPlaceholderRecordBatch } from '../recordbatch.mjs';
+import { ReadableInterop } from '../io/interfaces.mjs';
+import { isPromise, isAsyncIterable, isWritableDOMStream, isWritableNodeStream, isIterable, isObject } from '../util/compat.mjs';
+export class RecordBatchWriter extends ReadableInterop {
+    constructor(options) {
+        super();
+        this._position = 0;
+        this._started = false;
+        // @ts-ignore
+        this._sink = new AsyncByteQueue();
+        this._schema = null;
+        this._dictionaryBlocks = [];
+        this._recordBatchBlocks = [];
+        this._dictionaryDeltaOffsets = new Map();
+        isObject(options) || (options = { autoDestroy: true, writeLegacyIpcFormat: false });
+        this._autoDestroy = (typeof options.autoDestroy === 'boolean') ? options.autoDestroy : true;
+        this._writeLegacyIpcFormat = (typeof options.writeLegacyIpcFormat === 'boolean') ? options.writeLegacyIpcFormat : false;
+    }
+    /** @nocollapse */
+    // @ts-ignore
+    static throughNode(options) {
+        throw new Error(`"throughNode" not available in this environment`);
+    }
+    /** @nocollapse */
+    static throughDOM(
+    // @ts-ignore
+    writableStrategy, 
+    // @ts-ignore
+    readableStrategy) {
+        throw new Error(`"throughDOM" not available in this environment`);
+    }
+    toString(sync = false) {
+        return this._sink.toString(sync);
+    }
+    toUint8Array(sync = false) {
+        return this._sink.toUint8Array(sync);
+    }
+    writeAll(input) {
+        if (isPromise(input)) {
+            return input.then((x) => this.writeAll(x));
+        }
+        else if (isAsyncIterable(input)) {
+            return writeAllAsync(this, input);
+        }
+        return writeAll(this, input);
+    }
+    get closed() { return this._sink.closed; }
+    [Symbol.asyncIterator]() { return this._sink[Symbol.asyncIterator](); }
+    toDOMStream(options) { return this._sink.toDOMStream(options); }
+    toNodeStream(options) { return this._sink.toNodeStream(options); }
+    close() {
+        return this.reset()._sink.close();
+    }
+    abort(reason) {
+        return this.reset()._sink.abort(reason);
+    }
+    finish() {
+        this._autoDestroy ? this.close() : this.reset(this._sink, this._schema);
+        return this;
+    }
+    reset(sink = this._sink, schema = null) {
+        if ((sink === this._sink) || (sink instanceof AsyncByteQueue)) {
+            this._sink = sink;
+        }
+        else {
+            this._sink = new AsyncByteQueue();
+            if (sink && isWritableDOMStream(sink)) {
+                this.toDOMStream({ type: 'bytes' }).pipeTo(sink);
+            }
+            else if (sink && isWritableNodeStream(sink)) {
+                this.toNodeStream({ objectMode: false }).pipe(sink);
+            }
+        }
+        if (this._started && this._schema) {
+            this._writeFooter(this._schema);
+        }
+        this._started = false;
+        this._dictionaryBlocks = [];
+        this._recordBatchBlocks = [];
+        this._dictionaryDeltaOffsets = new Map();
+        if (!schema || !(compareSchemas(schema, this._schema))) {
+            if (schema == null) {
+                this._position = 0;
+                this._schema = null;
+            }
+            else {
+                this._started = true;
+                this._schema = schema;
+                this._writeSchema(schema);
+            }
+        }
+        return this;
+    }
+    write(payload) {
+        let schema = null;
+        if (!this._sink) {
+            throw new Error(`RecordBatchWriter is closed`);
+        }
+        else if (payload == null) {
+            return this.finish() && undefined;
+        }
+        else if (payload instanceof Table && !(schema = payload.schema)) {
+            return this.finish() && undefined;
+        }
+        else if (payload instanceof RecordBatch && !(schema = payload.schema)) {
+            return this.finish() && undefined;
+        }
+        if (schema && !compareSchemas(schema, this._schema)) {
+            if (this._started && this._autoDestroy) {
+                return this.close();
+            }
+            this.reset(this._sink, schema);
+        }
+        if (payload instanceof RecordBatch) {
+            if (!(payload instanceof _InternalEmptyPlaceholderRecordBatch)) {
+                this._writeRecordBatch(payload);
+            }
+        }
+        else if (payload instanceof Table) {
+            this.writeAll(payload.batches);
+        }
+        else if (isIterable(payload)) {
+            this.writeAll(payload);
+        }
+    }
+    _writeMessage(message, alignment = 8) {
+        const a = alignment - 1;
+        const buffer = Message.encode(message);
+        const flatbufferSize = buffer.byteLength;
+        const prefixSize = !this._writeLegacyIpcFormat ? 8 : 4;
+        const alignedSize = (flatbufferSize + prefixSize + a) & ~a;
+        const nPaddingBytes = alignedSize - flatbufferSize - prefixSize;
+        if (message.headerType === MessageHeader.RecordBatch) {
+            this._recordBatchBlocks.push(new FileBlock(alignedSize, message.bodyLength, this._position));
+        }
+        else if (message.headerType === MessageHeader.DictionaryBatch) {
+            this._dictionaryBlocks.push(new FileBlock(alignedSize, message.bodyLength, this._position));
+        }
+        // If not in legacy pre-0.15.0 mode, write the stream continuation indicator
+        if (!this._writeLegacyIpcFormat) {
+            this._write(Int32Array.of(-1));
+        }
+        // Write the flatbuffer size prefix including padding
+        this._write(Int32Array.of(alignedSize - prefixSize));
+        // Write the flatbuffer
+        if (flatbufferSize > 0) {
+            this._write(buffer);
+        }
+        // Write any padding
+        return this._writePadding(nPaddingBytes);
+    }
+    _write(chunk) {
+        if (this._started) {
+            const buffer = toUint8Array(chunk);
+            if (buffer && buffer.byteLength > 0) {
+                this._sink.write(buffer);
+                this._position += buffer.byteLength;
+            }
+        }
+        return this;
+    }
+    _writeSchema(schema) {
+        return this._writeMessage(Message.from(schema));
+    }
+    // @ts-ignore
+    _writeFooter(schema) {
+        // eos bytes
+        return this._writeLegacyIpcFormat
+            ? this._write(Int32Array.of(0))
+            : this._write(Int32Array.of(-1, 0));
+    }
+    _writeMagic() {
+        return this._write(MAGIC);
+    }
+    _writePadding(nBytes) {
+        return nBytes > 0 ? this._write(new Uint8Array(nBytes)) : this;
+    }
+    _writeRecordBatch(batch) {
+        const { byteLength, nodes, bufferRegions, buffers } = VectorAssembler.assemble(batch);
+        const recordBatch = new metadata.RecordBatch(batch.numRows, nodes, bufferRegions);
+        const message = Message.from(recordBatch, byteLength);
+        return this
+            ._writeDictionaries(batch)
+            ._writeMessage(message)
+            ._writeBodyBuffers(buffers);
+    }
+    _writeDictionaryBatch(dictionary, id, isDelta = false) {
+        this._dictionaryDeltaOffsets.set(id, dictionary.length + (this._dictionaryDeltaOffsets.get(id) || 0));
+        const { byteLength, nodes, bufferRegions, buffers } = VectorAssembler.assemble(new Vector([dictionary]));
+        const recordBatch = new metadata.RecordBatch(dictionary.length, nodes, bufferRegions);
+        const dictionaryBatch = new metadata.DictionaryBatch(recordBatch, id, isDelta);
+        const message = Message.from(dictionaryBatch, byteLength);
+        return this
+            ._writeMessage(message)
+            ._writeBodyBuffers(buffers);
+    }
+    _writeBodyBuffers(buffers) {
+        let buffer;
+        let size, padding;
+        for (let i = -1, n = buffers.length; ++i < n;) {
+            if ((buffer = buffers[i]) && (size = buffer.byteLength) > 0) {
+                this._write(buffer);
+                if ((padding = ((size + 7) & ~7) - size) > 0) {
+                    this._writePadding(padding);
+                }
+            }
+        }
+        return this;
+    }
+    _writeDictionaries(batch) {
+        for (let [id, dictionary] of batch.dictionaries) {
+            let offset = this._dictionaryDeltaOffsets.get(id) || 0;
+            if (offset === 0 || (dictionary = dictionary === null || dictionary === void 0 ? void 0 : dictionary.slice(offset)).length > 0) {
+                for (const data of dictionary.data) {
+                    this._writeDictionaryBatch(data, id, offset > 0);
+                    offset += data.length;
+                }
+            }
+        }
+        return this;
+    }
+}
+/** @ignore */
+export class RecordBatchStreamWriter extends RecordBatchWriter {
+    /** @nocollapse */
+    static writeAll(input, options) {
+        const writer = new RecordBatchStreamWriter(options);
+        if (isPromise(input)) {
+            return input.then((x) => writer.writeAll(x));
+        }
+        else if (isAsyncIterable(input)) {
+            return writeAllAsync(writer, input);
+        }
+        return writeAll(writer, input);
+    }
+}
+/** @ignore */
+export class RecordBatchFileWriter extends RecordBatchWriter {
+    /** @nocollapse */
+    static writeAll(input) {
+        const writer = new RecordBatchFileWriter();
+        if (isPromise(input)) {
+            return input.then((x) => writer.writeAll(x));
+        }
+        else if (isAsyncIterable(input)) {
+            return writeAllAsync(writer, input);
+        }
+        return writeAll(writer, input);
+    }
+    constructor() {
+        super();
+        this._autoDestroy = true;
+    }
+    // @ts-ignore
+    _writeSchema(schema) {
+        return this._writeMagic()._writePadding(2);
+    }
+    _writeFooter(schema) {
+        const buffer = Footer.encode(new Footer(schema, MetadataVersion.V4, this._recordBatchBlocks, this._dictionaryBlocks));
+        return super
+            ._writeFooter(schema) // EOS bytes for sequential readers
+            ._write(buffer) // Write the flatbuffer
+            ._write(Int32Array.of(buffer.byteLength)) // then the footer size suffix
+            ._writeMagic(); // then the magic suffix
+    }
+}
+/** @ignore */
+export class RecordBatchJSONWriter extends RecordBatchWriter {
+    constructor() {
+        super();
+        this._autoDestroy = true;
+        this._recordBatches = [];
+        this._dictionaries = [];
+    }
+    /** @nocollapse */
+    static writeAll(input) {
+        return new RecordBatchJSONWriter().writeAll(input);
+    }
+    _writeMessage() { return this; }
+    // @ts-ignore
+    _writeFooter(schema) { return this; }
+    _writeSchema(schema) {
+        return this._write(`{\n  "schema": ${JSON.stringify({ fields: schema.fields.map(field => fieldToJSON(field)) }, null, 2)}`);
+    }
+    _writeDictionaries(batch) {
+        if (batch.dictionaries.size > 0) {
+            this._dictionaries.push(batch);
+        }
+        return this;
+    }
+    _writeDictionaryBatch(dictionary, id, isDelta = false) {
+        this._dictionaryDeltaOffsets.set(id, dictionary.length + (this._dictionaryDeltaOffsets.get(id) || 0));
+        this._write(this._dictionaryBlocks.length === 0 ? `    ` : `,\n    `);
+        this._write(`${dictionaryBatchToJSON(dictionary, id, isDelta)}`);
+        this._dictionaryBlocks.push(new FileBlock(0, 0, 0));
+        return this;
+    }
+    _writeRecordBatch(batch) {
+        this._writeDictionaries(batch);
+        this._recordBatches.push(batch);
+        return this;
+    }
+    close() {
+        if (this._dictionaries.length > 0) {
+            this._write(`,\n  "dictionaries": [\n`);
+            for (const batch of this._dictionaries) {
+                super._writeDictionaries(batch);
+            }
+            this._write(`\n  ]`);
+        }
+        if (this._recordBatches.length > 0) {
+            for (let i = -1, n = this._recordBatches.length; ++i < n;) {
+                this._write(i === 0 ? `,\n  "batches": [\n    ` : `,\n    `);
+                this._write(`${recordBatchToJSON(this._recordBatches[i])}`);
+                this._recordBatchBlocks.push(new FileBlock(0, 0, 0));
+            }
+            this._write(`\n  ]`);
+        }
+        if (this._schema) {
+            this._write(`\n}`);
+        }
+        this._dictionaries = [];
+        this._recordBatches = [];
+        return super.close();
+    }
+}
+/** @ignore */
+function writeAll(writer, input) {
+    let chunks = input;
+    if (input instanceof Table) {
+        chunks = input.batches;
+        writer.reset(undefined, input.schema);
+    }
+    for (const batch of chunks) {
+        writer.write(batch);
+    }
+    return writer.finish();
+}
+/** @ignore */
+function writeAllAsync(writer, batches) {
+    var batches_1, batches_1_1;
+    var e_1, _a;
+    return __awaiter(this, void 0, void 0, function* () {
+        try {
+            for (batches_1 = __asyncValues(batches); batches_1_1 = yield batches_1.next(), !batches_1_1.done;) {
+                const batch = batches_1_1.value;
+                writer.write(batch);
+            }
+        }
+        catch (e_1_1) { e_1 = { error: e_1_1 }; }
+        finally {
+            try {
+                if (batches_1_1 && !batches_1_1.done && (_a = batches_1.return)) yield _a.call(batches_1);
+            }
+            finally { if (e_1) throw e_1.error; }
+        }
+        return writer.finish();
+    });
+}
+/** @ignore */
+function fieldToJSON({ name, type, nullable }) {
+    const assembler = new JSONTypeAssembler();
+    return {
+        'name': name, 'nullable': nullable,
+        'type': assembler.visit(type),
+        'children': (type.children || []).map((field) => fieldToJSON(field)),
+        'dictionary': !DataType.isDictionary(type) ? undefined : {
+            'id': type.id,
+            'isOrdered': type.isOrdered,
+            'indexType': assembler.visit(type.indices)
+        }
+    };
+}
+/** @ignore */
+function dictionaryBatchToJSON(dictionary, id, isDelta = false) {
+    const [columns] = JSONVectorAssembler.assemble(new RecordBatch({ [id]: dictionary }));
+    return JSON.stringify({
+        'id': id,
+        'isDelta': isDelta,
+        'data': {
+            'count': dictionary.length,
+            'columns': columns
+        }
+    }, null, 2);
+}
+/** @ignore */
+function recordBatchToJSON(records) {
+    const [columns] = JSONVectorAssembler.assemble(records);
+    return JSON.stringify({
+        'count': records.numRows,
+        'columns': columns
+    }, null, 2);
+}
+
+//# sourceMappingURL=writer.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/ipc/writer.mjs.map b/igv_component/node_modules/apache-arrow/ipc/writer.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..cf377fe0b70e60a7c203a9bd07e3f52e6f4b7105
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/ipc/writer.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/package.json b/igv_component/node_modules/apache-arrow/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..92aa3dc629419f804c4e63a456f9b5e68b0e1f53
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/package.json
@@ -0,0 +1,64 @@
+{
+  "version": "11.0.0",
+  "name": "apache-arrow",
+  "unpkg": "Arrow.es2015.min.js",
+  "jsdelivr": "Arrow.es2015.min.js",
+  "browser": {
+    "./Arrow.node.js": "./Arrow.dom.js",
+    "./Arrow.node.mjs": "./Arrow.dom.mjs"
+  },
+  "main": "Arrow.node.js",
+  "type": "commonjs",
+  "module": "Arrow.node.mjs",
+  "sideEffects": false,
+  "esm": {
+    "mode": "all",
+    "sourceMap": true
+  },
+  "types": "Arrow.node.d.ts",
+  "license": "Apache-2.0",
+  "description": "Apache Arrow columnar in-memory format",
+  "author": "Apache Software Foundation",
+  "homepage": "https://github.com/apache/arrow/blob/master/js/README.md",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/apache/arrow.git"
+  },
+  "bugs": {
+    "url": "https://issues.apache.org/jira/projects/ARROW"
+  },
+  "keywords": [
+    "apache",
+    "arrow"
+  ],
+  "dependencies": {
+    "@types/flatbuffers": "*",
+    "@types/node": "18.7.23",
+    "@types/command-line-args": "5.2.0",
+    "@types/command-line-usage": "5.0.2",
+    "@types/pad-left": "2.1.1",
+    "command-line-args": "5.2.1",
+    "command-line-usage": "6.1.3",
+    "flatbuffers": "2.0.4",
+    "json-bignum": "^0.0.3",
+    "pad-left": "^2.1.0",
+    "tslib": "^2.4.0"
+  },
+  "bin": {
+    "arrow2csv": "bin/arrow2csv.js"
+  },
+  "exports": {
+    ".": {
+      "node": {
+        "import": "./Arrow.node.mjs",
+        "require": "./Arrow.node.js"
+      },
+      "import": "./Arrow.dom.mjs",
+      "require": "./Arrow.dom.js"
+    },
+    "./*": {
+      "import": "./*.mjs",
+      "require": "./*.js"
+    }
+  }
+}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/recordbatch.d.ts b/igv_component/node_modules/apache-arrow/recordbatch.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..8da34dd7c61aed273324c625ffb366bf9a40647b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/recordbatch.d.ts
@@ -0,0 +1,134 @@
+import { Data } from './data.js';
+import { Table } from './table.js';
+import { Vector } from './vector.js';
+import { Schema } from './schema.js';
+import { DataType, Struct, TypeMap } from './type.js';
+/** @ignore */
+export interface RecordBatch<T extends TypeMap = any> {
+    readonly TType: Struct<T>;
+    readonly TArray: Struct<T>['TArray'];
+    readonly TValue: Struct<T>['TValue'];
+    /**
+     * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/isConcatSpreadable
+     */
+    [Symbol.isConcatSpreadable]: true;
+}
+/** @ignore */
+export declare class RecordBatch<T extends TypeMap = any> {
+    constructor(columns: {
+        [P in keyof T]: Data<T[P]>;
+    });
+    constructor(schema: Schema<T>, data?: Data<Struct<T>>);
+    protected _dictionaries?: Map<number, Vector>;
+    readonly schema: Schema<T>;
+    readonly data: Data<Struct<T>>;
+    get dictionaries(): Map<number, Vector<any>>;
+    /**
+     * The number of columns in this RecordBatch.
+     */
+    get numCols(): number;
+    /**
+     * The number of rows in this RecordBatch.
+     */
+    get numRows(): number;
+    /**
+     * The number of null rows in this RecordBatch.
+     */
+    get nullCount(): number;
+    /**
+     * Check whether an element is null.
+     * @param index The index at which to read the validity bitmap.
+     */
+    isValid(index: number): boolean;
+    /**
+     * Get a row by position.
+     * @param index The index of the element to read.
+     */
+    get(index: number): import("./Arrow.js").StructRowProxy<T> | null;
+    /**
+     * Set a row by position.
+     * @param index The index of the element to write.
+     * @param value The value to set.
+     */
+    set(index: number, value: Struct<T>['TValue']): void;
+    /**
+     * Retrieve the index of the first occurrence of a row in an RecordBatch.
+     * @param element The row to locate in the RecordBatch.
+     * @param offset The index at which to begin the search. If offset is omitted, the search starts at index 0.
+     */
+    indexOf(element: Struct<T>['TValue'], offset?: number): number;
+    /**
+     * Get the size (in bytes) of a row by index.
+     * @param index The row index for which to compute the byteLength.
+     */
+    getByteLength(index: number): number;
+    /**
+     * Iterator for rows in this RecordBatch.
+     */
+    [Symbol.iterator](): IterableIterator<import("./Arrow.js").StructRowProxy<T>>;
+    /**
+     * Return a JavaScript Array of the RecordBatch rows.
+     * @returns An Array of RecordBatch rows.
+     */
+    toArray(): import("./Arrow.js").StructRowProxy<T>[];
+    /**
+     * Combines two or more RecordBatch of the same schema.
+     * @param others Additional RecordBatch to add to the end of this RecordBatch.
+     */
+    concat(...others: RecordBatch<T>[]): Table<T>;
+    /**
+     * Return a zero-copy sub-section of this RecordBatch.
+     * @param start The beginning of the specified portion of the RecordBatch.
+     * @param end The end of the specified portion of the RecordBatch. This is exclusive of the element at the index 'end'.
+     */
+    slice(begin?: number, end?: number): RecordBatch<T>;
+    /**
+     * Returns a child Vector by name, or null if this Vector has no child with the given name.
+     * @param name The name of the child to retrieve.
+     */
+    getChild<P extends keyof T>(name: P): Vector<T[P]> | null;
+    /**
+     * Returns a child Vector by index, or null if this Vector has no child at the supplied index.
+     * @param index The index of the child to retrieve.
+     */
+    getChildAt<R extends DataType = any>(index: number): Vector<R> | null;
+    /**
+     * Sets a child Vector by name.
+     * @param name The name of the child to overwrite.
+     * @returns A new RecordBatch with the new child for the specified name.
+     */
+    setChild<P extends keyof T, R extends DataType>(name: P, child: Vector<R>): RecordBatch<T & { [K in P]: R; }>;
+    /**
+     * Sets a child Vector by index.
+     * @param index The index of the child to overwrite.
+     * @returns A new RecordBatch with the new child at the specified index.
+     */
+    setChildAt(index: number, child?: null): RecordBatch;
+    setChildAt<R extends DataType = any>(index: number, child: Vector<R>): RecordBatch;
+    /**
+     * Construct a new RecordBatch containing only specified columns.
+     *
+     * @param columnNames Names of columns to keep.
+     * @returns A new RecordBatch of columns matching the specified names.
+     */
+    select<K extends keyof T = any>(columnNames: K[]): RecordBatch<{ [P in K]: T[P]; }>;
+    /**
+     * Construct a new RecordBatch containing only columns at the specified indices.
+     *
+     * @param columnIndices Indices of columns to keep.
+     * @returns A new RecordBatch of columns matching at the specified indices.
+     */
+    selectAt<K extends T = any>(columnIndices: number[]): RecordBatch<{ [P in keyof K]: K[P]; }>;
+    protected static [Symbol.toStringTag]: string;
+}
+/**
+ * An internal class used by the `RecordBatchReader` and `RecordBatchWriter`
+ * implementations to differentiate between a stream with valid zero-length
+ * RecordBatches, and a stream with a Schema message, but no RecordBatches.
+ * @see https://github.com/apache/arrow/pull/4373
+ * @ignore
+ * @private
+ */
+export declare class _InternalEmptyPlaceholderRecordBatch<T extends TypeMap = any> extends RecordBatch<T> {
+    constructor(schema: Schema<T>);
+}
diff --git a/igv_component/node_modules/apache-arrow/recordbatch.d.ts.map b/igv_component/node_modules/apache-arrow/recordbatch.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..8ca43eca40402cda79019c7592e8cbdc2c4bfad3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/recordbatch.d.ts.map
@@ -0,0 +1 @@
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diff --git a/igv_component/node_modules/apache-arrow/recordbatch.js b/igv_component/node_modules/apache-arrow/recordbatch.js
new file mode 100644
index 0000000000000000000000000000000000000000..48ad1b42c8e0a99af6f88cac5eb287077ba0e3d1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/recordbatch.js
@@ -0,0 +1,301 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+var _a;
+Object.defineProperty(exports, "__esModule", { value: true });
+exports._InternalEmptyPlaceholderRecordBatch = exports.RecordBatch = void 0;
+const data_js_1 = require("./data.js");
+const table_js_1 = require("./table.js");
+const vector_js_1 = require("./vector.js");
+const schema_js_1 = require("./schema.js");
+const type_js_1 = require("./type.js");
+const get_js_1 = require("./visitor/get.js");
+const set_js_1 = require("./visitor/set.js");
+const indexof_js_1 = require("./visitor/indexof.js");
+const iterator_js_1 = require("./visitor/iterator.js");
+const bytelength_js_1 = require("./visitor/bytelength.js");
+/** @ignore */
+class RecordBatch {
+    constructor(...args) {
+        switch (args.length) {
+            case 2: {
+                [this.schema] = args;
+                if (!(this.schema instanceof schema_js_1.Schema)) {
+                    throw new TypeError('RecordBatch constructor expects a [Schema, Data] pair.');
+                }
+                [,
+                    this.data = (0, data_js_1.makeData)({
+                        nullCount: 0,
+                        type: new type_js_1.Struct(this.schema.fields),
+                        children: this.schema.fields.map((f) => (0, data_js_1.makeData)({ type: f.type, nullCount: 0 }))
+                    })
+                ] = args;
+                if (!(this.data instanceof data_js_1.Data)) {
+                    throw new TypeError('RecordBatch constructor expects a [Schema, Data] pair.');
+                }
+                [this.schema, this.data] = ensureSameLengthData(this.schema, this.data.children);
+                break;
+            }
+            case 1: {
+                const [obj] = args;
+                const { fields, children, length } = Object.keys(obj).reduce((memo, name, i) => {
+                    memo.children[i] = obj[name];
+                    memo.length = Math.max(memo.length, obj[name].length);
+                    memo.fields[i] = schema_js_1.Field.new({ name, type: obj[name].type, nullable: true });
+                    return memo;
+                }, {
+                    length: 0,
+                    fields: new Array(),
+                    children: new Array(),
+                });
+                const schema = new schema_js_1.Schema(fields);
+                const data = (0, data_js_1.makeData)({ type: new type_js_1.Struct(fields), length, children, nullCount: 0 });
+                [this.schema, this.data] = ensureSameLengthData(schema, data.children, length);
+                break;
+            }
+            default: throw new TypeError('RecordBatch constructor expects an Object mapping names to child Data, or a [Schema, Data] pair.');
+        }
+    }
+    get dictionaries() {
+        return this._dictionaries || (this._dictionaries = collectDictionaries(this.schema.fields, this.data.children));
+    }
+    /**
+     * The number of columns in this RecordBatch.
+     */
+    get numCols() { return this.schema.fields.length; }
+    /**
+     * The number of rows in this RecordBatch.
+     */
+    get numRows() { return this.data.length; }
+    /**
+     * The number of null rows in this RecordBatch.
+     */
+    get nullCount() {
+        return this.data.nullCount;
+    }
+    /**
+     * Check whether an element is null.
+     * @param index The index at which to read the validity bitmap.
+     */
+    isValid(index) {
+        return this.data.getValid(index);
+    }
+    /**
+     * Get a row by position.
+     * @param index The index of the element to read.
+     */
+    get(index) {
+        return get_js_1.instance.visit(this.data, index);
+    }
+    /**
+     * Set a row by position.
+     * @param index The index of the element to write.
+     * @param value The value to set.
+     */
+    set(index, value) {
+        return set_js_1.instance.visit(this.data, index, value);
+    }
+    /**
+     * Retrieve the index of the first occurrence of a row in an RecordBatch.
+     * @param element The row to locate in the RecordBatch.
+     * @param offset The index at which to begin the search. If offset is omitted, the search starts at index 0.
+     */
+    indexOf(element, offset) {
+        return indexof_js_1.instance.visit(this.data, element, offset);
+    }
+    /**
+     * Get the size (in bytes) of a row by index.
+     * @param index The row index for which to compute the byteLength.
+     */
+    getByteLength(index) {
+        return bytelength_js_1.instance.visit(this.data, index);
+    }
+    /**
+     * Iterator for rows in this RecordBatch.
+     */
+    [Symbol.iterator]() {
+        return iterator_js_1.instance.visit(new vector_js_1.Vector([this.data]));
+    }
+    /**
+     * Return a JavaScript Array of the RecordBatch rows.
+     * @returns An Array of RecordBatch rows.
+     */
+    toArray() {
+        return [...this];
+    }
+    /**
+     * Combines two or more RecordBatch of the same schema.
+     * @param others Additional RecordBatch to add to the end of this RecordBatch.
+     */
+    concat(...others) {
+        return new table_js_1.Table(this.schema, [this, ...others]);
+    }
+    /**
+     * Return a zero-copy sub-section of this RecordBatch.
+     * @param start The beginning of the specified portion of the RecordBatch.
+     * @param end The end of the specified portion of the RecordBatch. This is exclusive of the element at the index 'end'.
+     */
+    slice(begin, end) {
+        const [slice] = new vector_js_1.Vector([this.data]).slice(begin, end).data;
+        return new RecordBatch(this.schema, slice);
+    }
+    /**
+     * Returns a child Vector by name, or null if this Vector has no child with the given name.
+     * @param name The name of the child to retrieve.
+     */
+    getChild(name) {
+        var _b;
+        return this.getChildAt((_b = this.schema.fields) === null || _b === void 0 ? void 0 : _b.findIndex((f) => f.name === name));
+    }
+    /**
+     * Returns a child Vector by index, or null if this Vector has no child at the supplied index.
+     * @param index The index of the child to retrieve.
+     */
+    getChildAt(index) {
+        if (index > -1 && index < this.schema.fields.length) {
+            return new vector_js_1.Vector([this.data.children[index]]);
+        }
+        return null;
+    }
+    /**
+     * Sets a child Vector by name.
+     * @param name The name of the child to overwrite.
+     * @returns A new RecordBatch with the new child for the specified name.
+     */
+    setChild(name, child) {
+        var _b;
+        return this.setChildAt((_b = this.schema.fields) === null || _b === void 0 ? void 0 : _b.findIndex((f) => f.name === name), child);
+    }
+    setChildAt(index, child) {
+        let schema = this.schema;
+        let data = this.data;
+        if (index > -1 && index < this.numCols) {
+            if (!child) {
+                child = new vector_js_1.Vector([(0, data_js_1.makeData)({ type: new type_js_1.Null, length: this.numRows })]);
+            }
+            const fields = schema.fields.slice();
+            const children = data.children.slice();
+            const field = fields[index].clone({ type: child.type });
+            [fields[index], children[index]] = [field, child.data[0]];
+            schema = new schema_js_1.Schema(fields, new Map(this.schema.metadata));
+            data = (0, data_js_1.makeData)({ type: new type_js_1.Struct(fields), children });
+        }
+        return new RecordBatch(schema, data);
+    }
+    /**
+     * Construct a new RecordBatch containing only specified columns.
+     *
+     * @param columnNames Names of columns to keep.
+     * @returns A new RecordBatch of columns matching the specified names.
+     */
+    select(columnNames) {
+        const schema = this.schema.select(columnNames);
+        const type = new type_js_1.Struct(schema.fields);
+        const children = [];
+        for (const name of columnNames) {
+            const index = this.schema.fields.findIndex((f) => f.name === name);
+            if (~index) {
+                children[index] = this.data.children[index];
+            }
+        }
+        return new RecordBatch(schema, (0, data_js_1.makeData)({ type, length: this.numRows, children }));
+    }
+    /**
+     * Construct a new RecordBatch containing only columns at the specified indices.
+     *
+     * @param columnIndices Indices of columns to keep.
+     * @returns A new RecordBatch of columns matching at the specified indices.
+     */
+    selectAt(columnIndices) {
+        const schema = this.schema.selectAt(columnIndices);
+        const children = columnIndices.map((i) => this.data.children[i]).filter(Boolean);
+        const subset = (0, data_js_1.makeData)({ type: new type_js_1.Struct(schema.fields), length: this.numRows, children });
+        return new RecordBatch(schema, subset);
+    }
+}
+exports.RecordBatch = RecordBatch;
+_a = Symbol.toStringTag;
+// Initialize this static property via an IIFE so bundlers don't tree-shake
+// out this logic, but also so we're still compliant with `"sideEffects": false`
+RecordBatch[_a] = ((proto) => {
+    proto._nullCount = -1;
+    proto[Symbol.isConcatSpreadable] = true;
+    return 'RecordBatch';
+})(RecordBatch.prototype);
+/** @ignore */
+function ensureSameLengthData(schema, chunks, maxLength = chunks.reduce((max, col) => Math.max(max, col.length), 0)) {
+    var _b;
+    const fields = [...schema.fields];
+    const children = [...chunks];
+    const nullBitmapSize = ((maxLength + 63) & ~63) >> 3;
+    for (const [idx, field] of schema.fields.entries()) {
+        const chunk = chunks[idx];
+        if (!chunk || chunk.length !== maxLength) {
+            fields[idx] = field.clone({ nullable: true });
+            children[idx] = (_b = chunk === null || chunk === void 0 ? void 0 : chunk._changeLengthAndBackfillNullBitmap(maxLength)) !== null && _b !== void 0 ? _b : (0, data_js_1.makeData)({
+                type: field.type,
+                length: maxLength,
+                nullCount: maxLength,
+                nullBitmap: new Uint8Array(nullBitmapSize)
+            });
+        }
+    }
+    return [
+        schema.assign(fields),
+        (0, data_js_1.makeData)({ type: new type_js_1.Struct(fields), length: maxLength, children })
+    ];
+}
+/** @ignore */
+function collectDictionaries(fields, children, dictionaries = new Map()) {
+    for (let i = -1, n = fields.length; ++i < n;) {
+        const field = fields[i];
+        const type = field.type;
+        const data = children[i];
+        if (type_js_1.DataType.isDictionary(type)) {
+            if (!dictionaries.has(type.id)) {
+                if (data.dictionary) {
+                    dictionaries.set(type.id, data.dictionary);
+                }
+            }
+            else if (dictionaries.get(type.id) !== data.dictionary) {
+                throw new Error(`Cannot create Schema containing two different dictionaries with the same Id`);
+            }
+        }
+        if (type.children && type.children.length > 0) {
+            collectDictionaries(type.children, data.children, dictionaries);
+        }
+    }
+    return dictionaries;
+}
+/**
+ * An internal class used by the `RecordBatchReader` and `RecordBatchWriter`
+ * implementations to differentiate between a stream with valid zero-length
+ * RecordBatches, and a stream with a Schema message, but no RecordBatches.
+ * @see https://github.com/apache/arrow/pull/4373
+ * @ignore
+ * @private
+ */
+class _InternalEmptyPlaceholderRecordBatch extends RecordBatch {
+    constructor(schema) {
+        const children = schema.fields.map((f) => (0, data_js_1.makeData)({ type: f.type }));
+        const data = (0, data_js_1.makeData)({ type: new type_js_1.Struct(schema.fields), nullCount: 0, children });
+        super(schema, data);
+    }
+}
+exports._InternalEmptyPlaceholderRecordBatch = _InternalEmptyPlaceholderRecordBatch;
+
+//# sourceMappingURL=recordbatch.js.map
diff --git a/igv_component/node_modules/apache-arrow/recordbatch.js.map b/igv_component/node_modules/apache-arrow/recordbatch.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..53ecfb151bdf087ff2862bcaa2d1ad48bc4b588d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/recordbatch.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/recordbatch.mjs b/igv_component/node_modules/apache-arrow/recordbatch.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..9f42efdf9c7f2f37ecd4c0225a593508e1ca6da8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/recordbatch.mjs
@@ -0,0 +1,296 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+var _a;
+import { Data, makeData } from './data.mjs';
+import { Table } from './table.mjs';
+import { Vector } from './vector.mjs';
+import { Schema, Field } from './schema.mjs';
+import { DataType, Struct, Null } from './type.mjs';
+import { instance as getVisitor } from './visitor/get.mjs';
+import { instance as setVisitor } from './visitor/set.mjs';
+import { instance as indexOfVisitor } from './visitor/indexof.mjs';
+import { instance as iteratorVisitor } from './visitor/iterator.mjs';
+import { instance as byteLengthVisitor } from './visitor/bytelength.mjs';
+/** @ignore */
+export class RecordBatch {
+    constructor(...args) {
+        switch (args.length) {
+            case 2: {
+                [this.schema] = args;
+                if (!(this.schema instanceof Schema)) {
+                    throw new TypeError('RecordBatch constructor expects a [Schema, Data] pair.');
+                }
+                [,
+                    this.data = makeData({
+                        nullCount: 0,
+                        type: new Struct(this.schema.fields),
+                        children: this.schema.fields.map((f) => makeData({ type: f.type, nullCount: 0 }))
+                    })
+                ] = args;
+                if (!(this.data instanceof Data)) {
+                    throw new TypeError('RecordBatch constructor expects a [Schema, Data] pair.');
+                }
+                [this.schema, this.data] = ensureSameLengthData(this.schema, this.data.children);
+                break;
+            }
+            case 1: {
+                const [obj] = args;
+                const { fields, children, length } = Object.keys(obj).reduce((memo, name, i) => {
+                    memo.children[i] = obj[name];
+                    memo.length = Math.max(memo.length, obj[name].length);
+                    memo.fields[i] = Field.new({ name, type: obj[name].type, nullable: true });
+                    return memo;
+                }, {
+                    length: 0,
+                    fields: new Array(),
+                    children: new Array(),
+                });
+                const schema = new Schema(fields);
+                const data = makeData({ type: new Struct(fields), length, children, nullCount: 0 });
+                [this.schema, this.data] = ensureSameLengthData(schema, data.children, length);
+                break;
+            }
+            default: throw new TypeError('RecordBatch constructor expects an Object mapping names to child Data, or a [Schema, Data] pair.');
+        }
+    }
+    get dictionaries() {
+        return this._dictionaries || (this._dictionaries = collectDictionaries(this.schema.fields, this.data.children));
+    }
+    /**
+     * The number of columns in this RecordBatch.
+     */
+    get numCols() { return this.schema.fields.length; }
+    /**
+     * The number of rows in this RecordBatch.
+     */
+    get numRows() { return this.data.length; }
+    /**
+     * The number of null rows in this RecordBatch.
+     */
+    get nullCount() {
+        return this.data.nullCount;
+    }
+    /**
+     * Check whether an element is null.
+     * @param index The index at which to read the validity bitmap.
+     */
+    isValid(index) {
+        return this.data.getValid(index);
+    }
+    /**
+     * Get a row by position.
+     * @param index The index of the element to read.
+     */
+    get(index) {
+        return getVisitor.visit(this.data, index);
+    }
+    /**
+     * Set a row by position.
+     * @param index The index of the element to write.
+     * @param value The value to set.
+     */
+    set(index, value) {
+        return setVisitor.visit(this.data, index, value);
+    }
+    /**
+     * Retrieve the index of the first occurrence of a row in an RecordBatch.
+     * @param element The row to locate in the RecordBatch.
+     * @param offset The index at which to begin the search. If offset is omitted, the search starts at index 0.
+     */
+    indexOf(element, offset) {
+        return indexOfVisitor.visit(this.data, element, offset);
+    }
+    /**
+     * Get the size (in bytes) of a row by index.
+     * @param index The row index for which to compute the byteLength.
+     */
+    getByteLength(index) {
+        return byteLengthVisitor.visit(this.data, index);
+    }
+    /**
+     * Iterator for rows in this RecordBatch.
+     */
+    [Symbol.iterator]() {
+        return iteratorVisitor.visit(new Vector([this.data]));
+    }
+    /**
+     * Return a JavaScript Array of the RecordBatch rows.
+     * @returns An Array of RecordBatch rows.
+     */
+    toArray() {
+        return [...this];
+    }
+    /**
+     * Combines two or more RecordBatch of the same schema.
+     * @param others Additional RecordBatch to add to the end of this RecordBatch.
+     */
+    concat(...others) {
+        return new Table(this.schema, [this, ...others]);
+    }
+    /**
+     * Return a zero-copy sub-section of this RecordBatch.
+     * @param start The beginning of the specified portion of the RecordBatch.
+     * @param end The end of the specified portion of the RecordBatch. This is exclusive of the element at the index 'end'.
+     */
+    slice(begin, end) {
+        const [slice] = new Vector([this.data]).slice(begin, end).data;
+        return new RecordBatch(this.schema, slice);
+    }
+    /**
+     * Returns a child Vector by name, or null if this Vector has no child with the given name.
+     * @param name The name of the child to retrieve.
+     */
+    getChild(name) {
+        var _b;
+        return this.getChildAt((_b = this.schema.fields) === null || _b === void 0 ? void 0 : _b.findIndex((f) => f.name === name));
+    }
+    /**
+     * Returns a child Vector by index, or null if this Vector has no child at the supplied index.
+     * @param index The index of the child to retrieve.
+     */
+    getChildAt(index) {
+        if (index > -1 && index < this.schema.fields.length) {
+            return new Vector([this.data.children[index]]);
+        }
+        return null;
+    }
+    /**
+     * Sets a child Vector by name.
+     * @param name The name of the child to overwrite.
+     * @returns A new RecordBatch with the new child for the specified name.
+     */
+    setChild(name, child) {
+        var _b;
+        return this.setChildAt((_b = this.schema.fields) === null || _b === void 0 ? void 0 : _b.findIndex((f) => f.name === name), child);
+    }
+    setChildAt(index, child) {
+        let schema = this.schema;
+        let data = this.data;
+        if (index > -1 && index < this.numCols) {
+            if (!child) {
+                child = new Vector([makeData({ type: new Null, length: this.numRows })]);
+            }
+            const fields = schema.fields.slice();
+            const children = data.children.slice();
+            const field = fields[index].clone({ type: child.type });
+            [fields[index], children[index]] = [field, child.data[0]];
+            schema = new Schema(fields, new Map(this.schema.metadata));
+            data = makeData({ type: new Struct(fields), children });
+        }
+        return new RecordBatch(schema, data);
+    }
+    /**
+     * Construct a new RecordBatch containing only specified columns.
+     *
+     * @param columnNames Names of columns to keep.
+     * @returns A new RecordBatch of columns matching the specified names.
+     */
+    select(columnNames) {
+        const schema = this.schema.select(columnNames);
+        const type = new Struct(schema.fields);
+        const children = [];
+        for (const name of columnNames) {
+            const index = this.schema.fields.findIndex((f) => f.name === name);
+            if (~index) {
+                children[index] = this.data.children[index];
+            }
+        }
+        return new RecordBatch(schema, makeData({ type, length: this.numRows, children }));
+    }
+    /**
+     * Construct a new RecordBatch containing only columns at the specified indices.
+     *
+     * @param columnIndices Indices of columns to keep.
+     * @returns A new RecordBatch of columns matching at the specified indices.
+     */
+    selectAt(columnIndices) {
+        const schema = this.schema.selectAt(columnIndices);
+        const children = columnIndices.map((i) => this.data.children[i]).filter(Boolean);
+        const subset = makeData({ type: new Struct(schema.fields), length: this.numRows, children });
+        return new RecordBatch(schema, subset);
+    }
+}
+_a = Symbol.toStringTag;
+// Initialize this static property via an IIFE so bundlers don't tree-shake
+// out this logic, but also so we're still compliant with `"sideEffects": false`
+RecordBatch[_a] = ((proto) => {
+    proto._nullCount = -1;
+    proto[Symbol.isConcatSpreadable] = true;
+    return 'RecordBatch';
+})(RecordBatch.prototype);
+/** @ignore */
+function ensureSameLengthData(schema, chunks, maxLength = chunks.reduce((max, col) => Math.max(max, col.length), 0)) {
+    var _b;
+    const fields = [...schema.fields];
+    const children = [...chunks];
+    const nullBitmapSize = ((maxLength + 63) & ~63) >> 3;
+    for (const [idx, field] of schema.fields.entries()) {
+        const chunk = chunks[idx];
+        if (!chunk || chunk.length !== maxLength) {
+            fields[idx] = field.clone({ nullable: true });
+            children[idx] = (_b = chunk === null || chunk === void 0 ? void 0 : chunk._changeLengthAndBackfillNullBitmap(maxLength)) !== null && _b !== void 0 ? _b : makeData({
+                type: field.type,
+                length: maxLength,
+                nullCount: maxLength,
+                nullBitmap: new Uint8Array(nullBitmapSize)
+            });
+        }
+    }
+    return [
+        schema.assign(fields),
+        makeData({ type: new Struct(fields), length: maxLength, children })
+    ];
+}
+/** @ignore */
+function collectDictionaries(fields, children, dictionaries = new Map()) {
+    for (let i = -1, n = fields.length; ++i < n;) {
+        const field = fields[i];
+        const type = field.type;
+        const data = children[i];
+        if (DataType.isDictionary(type)) {
+            if (!dictionaries.has(type.id)) {
+                if (data.dictionary) {
+                    dictionaries.set(type.id, data.dictionary);
+                }
+            }
+            else if (dictionaries.get(type.id) !== data.dictionary) {
+                throw new Error(`Cannot create Schema containing two different dictionaries with the same Id`);
+            }
+        }
+        if (type.children && type.children.length > 0) {
+            collectDictionaries(type.children, data.children, dictionaries);
+        }
+    }
+    return dictionaries;
+}
+/**
+ * An internal class used by the `RecordBatchReader` and `RecordBatchWriter`
+ * implementations to differentiate between a stream with valid zero-length
+ * RecordBatches, and a stream with a Schema message, but no RecordBatches.
+ * @see https://github.com/apache/arrow/pull/4373
+ * @ignore
+ * @private
+ */
+export class _InternalEmptyPlaceholderRecordBatch extends RecordBatch {
+    constructor(schema) {
+        const children = schema.fields.map((f) => makeData({ type: f.type }));
+        const data = makeData({ type: new Struct(schema.fields), nullCount: 0, children });
+        super(schema, data);
+    }
+}
+
+//# sourceMappingURL=recordbatch.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/recordbatch.mjs.map b/igv_component/node_modules/apache-arrow/recordbatch.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..e0e7fd6a29660c892ea054860de97d545eab45e7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/recordbatch.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/row/map.d.ts b/igv_component/node_modules/apache-arrow/row/map.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..f228d2fc0474963268abfb771da855d0aeac7dee
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/row/map.d.ts
@@ -0,0 +1,32 @@
+import { Data } from '../data.js';
+import { Vector } from '../vector.js';
+import { DataType, Struct } from '../type.js';
+/** @ignore */ export declare const kKeys: unique symbol;
+/** @ignore */ export declare const kVals: unique symbol;
+export declare class MapRow<K extends DataType = any, V extends DataType = any> {
+    [key: string]: V['TValue'];
+    private [kKeys];
+    private [kVals];
+    constructor(slice: Data<Struct<{
+        key: K;
+        value: V;
+    }>>);
+    [Symbol.iterator](): MapRowIterator<K, V>;
+    get size(): number;
+    toArray(): unknown[];
+    toJSON(): { [P in K["TValue"]]: V["TValue"]; };
+    toString(): string;
+}
+declare class MapRowIterator<K extends DataType = any, V extends DataType = any> implements IterableIterator<[K['TValue'], V['TValue'] | null]> {
+    private keys;
+    private vals;
+    private numKeys;
+    private keyIndex;
+    constructor(keys: Vector<K>, vals: Data<V>);
+    [Symbol.iterator](): this;
+    next(): IteratorReturnResult<null> | {
+        done: boolean;
+        value: [K["TValue"], V["TValue"] | null];
+    };
+}
+export {};
diff --git a/igv_component/node_modules/apache-arrow/row/map.d.ts.map b/igv_component/node_modules/apache-arrow/row/map.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..a3deefb65c03331dc2a327a7e4797eb1c6cfcc9e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/row/map.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["row/map.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,IAAI,EAAE,MAAM,YAAY,CAAC;AAClC,OAAO,EAAE,MAAM,EAAE,MAAM,cAAc,CAAC;AACtC,OAAO,EAAE,QAAQ,EAAE,MAAM,EAAE,MAAM,YAAY,CAAC;AAK9C,cAAc,CAAC,eAAO,MAAM,KAAK,eAAqB,CAAC;AACvD,cAAc,CAAC,eAAO,MAAM,KAAK,eAAqB,CAAC;AAEvD,qBAAa,MAAM,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,CAAC,SAAS,QAAQ,GAAG,GAAG;IAElE,CAAC,GAAG,EAAE,MAAM,GAAG,CAAC,CAAC,QAAQ,CAAC,CAAC;IAE3B,QAAgB,CAAC,KAAK,CAAC,CAAY;IACnC,QAAgB,CAAC,KAAK,CAAC,CAAU;gBAErB,KAAK,EAAE,IAAI,CAAC,MAAM,CAAC;QAAE,GAAG,EAAE,CAAC,CAAC;QAAC,KAAK,EAAE,CAAC,CAAA;KAAE,CAAC,CAAC;IAMrD,CAAC,MAAM,CAAC,QAAQ,CAAC;IAIjB,IAAW,IAAI,WAAiC;IAEzC,OAAO;IAEP,MAAM;IAUN,QAAQ;CAUlB;AAED,cAAM,cAAc,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,CAAC,SAAS,QAAQ,GAAG,GAAG,CACnE,YAAW,gBAAgB,CAAC,CAAC,CAAC,CAAC,QAAQ,CAAC,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC,CAAC;IAE9D,OAAO,CAAC,IAAI,CAAY;IACxB,OAAO,CAAC,IAAI,CAAU;IACtB,OAAO,CAAC,OAAO,CAAS;IACxB,OAAO,CAAC,QAAQ,CAAS;gBAEb,IAAI,EAAE,MAAM,CAAC,CAAC,CAAC,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC;IAO1C,CAAC,MAAM,CAAC,QAAQ,CAAC;IAEjB,IAAI;;;;CAcP","file":"map.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/row/map.js b/igv_component/node_modules/apache-arrow/row/map.js
new file mode 100644
index 0000000000000000000000000000000000000000..33e100a1b076b34b3ee56d05b0a294a37b0a78e2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/row/map.js
@@ -0,0 +1,127 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.MapRow = exports.kVals = exports.kKeys = void 0;
+const vector_js_1 = require("../vector.js");
+const pretty_js_1 = require("../util/pretty.js");
+const get_js_1 = require("../visitor/get.js");
+const set_js_1 = require("../visitor/set.js");
+/** @ignore */ exports.kKeys = Symbol.for('keys');
+/** @ignore */ exports.kVals = Symbol.for('vals');
+class MapRow {
+    constructor(slice) {
+        this[exports.kKeys] = new vector_js_1.Vector([slice.children[0]]).memoize();
+        this[exports.kVals] = slice.children[1];
+        return new Proxy(this, new MapRowProxyHandler());
+    }
+    [Symbol.iterator]() {
+        return new MapRowIterator(this[exports.kKeys], this[exports.kVals]);
+    }
+    get size() { return this[exports.kKeys].length; }
+    toArray() { return Object.values(this.toJSON()); }
+    toJSON() {
+        const keys = this[exports.kKeys];
+        const vals = this[exports.kVals];
+        const json = {};
+        for (let i = -1, n = keys.length; ++i < n;) {
+            json[keys.get(i)] = get_js_1.instance.visit(vals, i);
+        }
+        return json;
+    }
+    toString() {
+        return `{${[...this].map(([key, val]) => `${(0, pretty_js_1.valueToString)(key)}: ${(0, pretty_js_1.valueToString)(val)}`).join(', ')}}`;
+    }
+    [Symbol.for('nodejs.util.inspect.custom')]() {
+        return this.toString();
+    }
+}
+exports.MapRow = MapRow;
+class MapRowIterator {
+    constructor(keys, vals) {
+        this.keys = keys;
+        this.vals = vals;
+        this.keyIndex = 0;
+        this.numKeys = keys.length;
+    }
+    [Symbol.iterator]() { return this; }
+    next() {
+        const i = this.keyIndex;
+        if (i === this.numKeys) {
+            return { done: true, value: null };
+        }
+        this.keyIndex++;
+        return {
+            done: false,
+            value: [
+                this.keys.get(i),
+                get_js_1.instance.visit(this.vals, i),
+            ]
+        };
+    }
+}
+/** @ignore */
+class MapRowProxyHandler {
+    isExtensible() { return false; }
+    deleteProperty() { return false; }
+    preventExtensions() { return true; }
+    ownKeys(row) {
+        return row[exports.kKeys].toArray().map(String);
+    }
+    has(row, key) {
+        return row[exports.kKeys].includes(key);
+    }
+    getOwnPropertyDescriptor(row, key) {
+        const idx = row[exports.kKeys].indexOf(key);
+        if (idx !== -1) {
+            return { writable: true, enumerable: true, configurable: true };
+        }
+        return;
+    }
+    get(row, key) {
+        // Look up key in row first
+        if (Reflect.has(row, key)) {
+            return row[key];
+        }
+        const idx = row[exports.kKeys].indexOf(key);
+        if (idx !== -1) {
+            const val = get_js_1.instance.visit(Reflect.get(row, exports.kVals), idx);
+            // Cache key/val lookups
+            Reflect.set(row, key, val);
+            return val;
+        }
+    }
+    set(row, key, val) {
+        const idx = row[exports.kKeys].indexOf(key);
+        if (idx !== -1) {
+            set_js_1.instance.visit(Reflect.get(row, exports.kVals), idx, val);
+            // Cache key/val lookups
+            return Reflect.set(row, key, val);
+        }
+        else if (Reflect.has(row, key)) {
+            return Reflect.set(row, key, val);
+        }
+        return false;
+    }
+}
+Object.defineProperties(MapRow.prototype, {
+    [Symbol.toStringTag]: { enumerable: false, configurable: false, value: 'Row' },
+    [exports.kKeys]: { writable: true, enumerable: false, configurable: false, value: null },
+    [exports.kVals]: { writable: true, enumerable: false, configurable: false, value: null },
+});
+
+//# sourceMappingURL=map.js.map
diff --git a/igv_component/node_modules/apache-arrow/row/map.js.map b/igv_component/node_modules/apache-arrow/row/map.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..0d8ac8ff27dbd016d9cd8544b31a2ad6eb73701e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/row/map.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["row/map.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAGrB,4CAAsC;AAEtC,iDAAkD;AAClD,8CAA2D;AAC3D,8CAA2D;AAE3D,cAAc,CAAc,QAAA,KAAK,GAAG,MAAM,CAAC,GAAG,CAAC,MAAM,CAAC,CAAC;AACvD,cAAc,CAAc,QAAA,KAAK,GAAG,MAAM,CAAC,GAAG,CAAC,MAAM,CAAC,CAAC;AAEvD,MAAa,MAAM;IAOf,YAAY,KAAyC;QACjD,IAAI,CAAC,aAAK,CAAC,GAAG,IAAI,kBAAM,CAAC,CAAC,KAAK,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,OAAO,EAAe,CAAC;QACrE,IAAI,CAAC,aAAK,CAAC,GAAG,KAAK,CAAC,QAAQ,CAAC,CAAC,CAAY,CAAC;QAC3C,OAAO,IAAI,KAAK,CAAC,IAAI,EAAE,IAAI,kBAAkB,EAAQ,CAAC,CAAC;IAC3D,CAAC;IAED,CAAC,MAAM,CAAC,QAAQ,CAAC;QACb,OAAO,IAAI,cAAc,CAAC,IAAI,CAAC,aAAK,CAAC,EAAE,IAAI,CAAC,aAAK,CAAC,CAAC,CAAC;IACxD,CAAC;IAED,IAAW,IAAI,KAAK,OAAO,IAAI,CAAC,aAAK,CAAC,CAAC,MAAM,CAAC,CAAC,CAAC;IAEzC,OAAO,KAAK,OAAO,MAAM,CAAC,MAAM,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC,CAAC;IAElD,MAAM;QACT,MAAM,IAAI,GAAG,IAAI,CAAC,aAAK,CAAC,CAAC;QACzB,MAAM,IAAI,GAAG,IAAI,CAAC,aAAK,CAAC,CAAC;QACzB,MAAM,IAAI,GAAG,EAAyC,CAAC;QACvD,KAAK,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,GAAG,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,GAAG,CAAC,GAAG;YACxC,IAAI,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,GAAG,iBAAU,CAAC,KAAK,CAAC,IAAI,EAAE,CAAC,CAAC,CAAC;SACjD;QACD,OAAO,IAAI,CAAC;IAChB,CAAC;IAEM,QAAQ;QACX,OAAO,IAAI,CAAC,GAAG,IAAI,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,EAAE,GAAG,CAAC,EAAE,EAAE,CACpC,GAAG,IAAA,yBAAa,EAAC,GAAG,CAAC,KAAK,IAAA,yBAAa,EAAC,GAAG,CAAC,EAAE,CACjD,CAAC,IAAI,CAAC,IAAI,CACP,GAAG,CAAC;IACZ,CAAC;IAEM,CAAC,MAAM,CAAC,GAAG,CAAC,4BAA4B,CAAC,CAAC;QAC7C,OAAO,IAAI,CAAC,QAAQ,EAAE,CAAC;IAC3B,CAAC;CACJ;AAzCD,wBAyCC;AAED,MAAM,cAAc;IAQhB,YAAY,IAAe,EAAE,IAAa;QACtC,IAAI,CAAC,IAAI,GAAG,IAAI,CAAC;QACjB,IAAI,CAAC,IAAI,GAAG,IAAI,CAAC;QACjB,IAAI,CAAC,QAAQ,GAAG,CAAC,CAAC;QAClB,IAAI,CAAC,OAAO,GAAG,IAAI,CAAC,MAAM,CAAC;IAC/B,CAAC;IAED,CAAC,MAAM,CAAC,QAAQ,CAAC,KAAK,OAAO,IAAI,CAAC,CAAC,CAAC;IAEpC,IAAI;QACA,MAAM,CAAC,GAAG,IAAI,CAAC,QAAQ,CAAC;QACxB,IAAI,CAAC,KAAK,IAAI,CAAC,OAAO,EAAE;YACpB,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,IAAI,EAAgC,CAAC;SACpE;QACD,IAAI,CAAC,QAAQ,EAAE,CAAC;QAChB,OAAO;YACH,IAAI,EAAE,KAAK;YACX,KAAK,EAAE;gBACH,IAAI,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC;gBAChB,iBAAU,CAAC,KAAK,CAAC,IAAI,CAAC,IAAI,EAAE,CAAC,CAAC;aACI;SACzC,CAAC;IACN,CAAC;CACJ;AAED,cAAc;AACd,MAAM,kBAAkB;IACpB,YAAY,KAAK,OAAO,KAAK,CAAC,CAAC,CAAC;IAChC,cAAc,KAAK,OAAO,KAAK,CAAC,CAAC,CAAC;IAClC,iBAAiB,KAAK,OAAO,IAAI,CAAC,CAAC,CAAC;IACpC,OAAO,CAAC,GAAiB;QACrB,OAAO,GAAG,CAAC,aAAK,CAAC,CAAC,OAAO,EAAE,CAAC,GAAG,CAAC,MAAM,CAAC,CAAC;IAC5C,CAAC;IACD,GAAG,CAAC,GAAiB,EAAE,GAAoB;QACvC,OAAO,GAAG,CAAC,aAAK,CAAC,CAAC,QAAQ,CAAC,GAAG,CAAC,CAAC;IACpC,CAAC;IACD,wBAAwB,CAAC,GAAiB,EAAE,GAAoB;QAC5D,MAAM,GAAG,GAAG,GAAG,CAAC,aAAK,CAAC,CAAC,OAAO,CAAC,GAAG,CAAC,CAAC;QACpC,IAAI,GAAG,KAAK,CAAC,CAAC,EAAE;YACZ,OAAO,EAAE,QAAQ,EAAE,IAAI,EAAE,UAAU,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,CAAC;SACnE;QACD,OAAO;IACX,CAAC;IACD,GAAG,CAAC,GAAiB,EAAE,GAAoB;QACvC,2BAA2B;QAC3B,IAAI,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,CAAC,EAAE;YACvB,OAAQ,GAAW,CAAC,GAAG,CAAC,CAAC;SAC5B;QACD,MAAM,GAAG,GAAG,GAAG,CAAC,aAAK,CAAC,CAAC,OAAO,CAAC,GAAG,CAAC,CAAC;QACpC,IAAI,GAAG,KAAK,CAAC,CAAC,EAAE;YACZ,MAAM,GAAG,GAAG,iBAAU,CAAC,KAAK,CAAC,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE,aAAK,CAAC,EAAE,GAAG,CAAC,CAAC;YAC3D,wBAAwB;YACxB,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,EAAE,GAAG,CAAC,CAAC;YAC3B,OAAO,GAAG,CAAC;SACd;IACL,CAAC;IACD,GAAG,CAAC,GAAiB,EAAE,GAAoB,EAAE,GAAM;QAC/C,MAAM,GAAG,GAAG,GAAG,CAAC,aAAK,CAAC,CAAC,OAAO,CAAC,GAAG,CAAC,CAAC;QACpC,IAAI,GAAG,KAAK,CAAC,CAAC,EAAE;YACZ,iBAAU,CAAC,KAAK,CAAC,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE,aAAK,CAAC,EAAE,GAAG,EAAE,GAAG,CAAC,CAAC;YACpD,wBAAwB;YACxB,OAAO,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,EAAE,GAAG,CAAC,CAAC;SACrC;aAAM,IAAI,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,CAAC,EAAE;YAC9B,OAAO,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,EAAE,GAAG,CAAC,CAAC;SACrC;QACD,OAAO,KAAK,CAAC;IACjB,CAAC;CACJ;AAED,MAAM,CAAC,gBAAgB,CAAC,MAAM,CAAC,SAAS,EAAE;IACtC,CAAC,MAAM,CAAC,WAAW,CAAC,EAAE,EAAE,UAAU,EAAE,KAAK,EAAE,YAAY,EAAE,KAAK,EAAE,KAAK,EAAE,KAAK,EAAE;IAC9E,CAAC,aAAK,CAAC,EAAE,EAAE,QAAQ,EAAE,IAAI,EAAE,UAAU,EAAE,KAAK,EAAE,YAAY,EAAE,KAAK,EAAE,KAAK,EAAE,IAAI,EAAE;IAChF,CAAC,aAAK,CAAC,EAAE,EAAE,QAAQ,EAAE,IAAI,EAAE,UAAU,EAAE,KAAK,EAAE,YAAY,EAAE,KAAK,EAAE,KAAK,EAAE,IAAI,EAAE;CACnF,CAAC,CAAC","file":"map.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/row/map.mjs b/igv_component/node_modules/apache-arrow/row/map.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..a2d61d209b0ea3d2ef973c43f59d380b32455e8b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/row/map.mjs
@@ -0,0 +1,123 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Vector } from '../vector.mjs';
+import { valueToString } from '../util/pretty.mjs';
+import { instance as getVisitor } from '../visitor/get.mjs';
+import { instance as setVisitor } from '../visitor/set.mjs';
+/** @ignore */ export const kKeys = Symbol.for('keys');
+/** @ignore */ export const kVals = Symbol.for('vals');
+export class MapRow {
+    constructor(slice) {
+        this[kKeys] = new Vector([slice.children[0]]).memoize();
+        this[kVals] = slice.children[1];
+        return new Proxy(this, new MapRowProxyHandler());
+    }
+    [Symbol.iterator]() {
+        return new MapRowIterator(this[kKeys], this[kVals]);
+    }
+    get size() { return this[kKeys].length; }
+    toArray() { return Object.values(this.toJSON()); }
+    toJSON() {
+        const keys = this[kKeys];
+        const vals = this[kVals];
+        const json = {};
+        for (let i = -1, n = keys.length; ++i < n;) {
+            json[keys.get(i)] = getVisitor.visit(vals, i);
+        }
+        return json;
+    }
+    toString() {
+        return `{${[...this].map(([key, val]) => `${valueToString(key)}: ${valueToString(val)}`).join(', ')}}`;
+    }
+    [Symbol.for('nodejs.util.inspect.custom')]() {
+        return this.toString();
+    }
+}
+class MapRowIterator {
+    constructor(keys, vals) {
+        this.keys = keys;
+        this.vals = vals;
+        this.keyIndex = 0;
+        this.numKeys = keys.length;
+    }
+    [Symbol.iterator]() { return this; }
+    next() {
+        const i = this.keyIndex;
+        if (i === this.numKeys) {
+            return { done: true, value: null };
+        }
+        this.keyIndex++;
+        return {
+            done: false,
+            value: [
+                this.keys.get(i),
+                getVisitor.visit(this.vals, i),
+            ]
+        };
+    }
+}
+/** @ignore */
+class MapRowProxyHandler {
+    isExtensible() { return false; }
+    deleteProperty() { return false; }
+    preventExtensions() { return true; }
+    ownKeys(row) {
+        return row[kKeys].toArray().map(String);
+    }
+    has(row, key) {
+        return row[kKeys].includes(key);
+    }
+    getOwnPropertyDescriptor(row, key) {
+        const idx = row[kKeys].indexOf(key);
+        if (idx !== -1) {
+            return { writable: true, enumerable: true, configurable: true };
+        }
+        return;
+    }
+    get(row, key) {
+        // Look up key in row first
+        if (Reflect.has(row, key)) {
+            return row[key];
+        }
+        const idx = row[kKeys].indexOf(key);
+        if (idx !== -1) {
+            const val = getVisitor.visit(Reflect.get(row, kVals), idx);
+            // Cache key/val lookups
+            Reflect.set(row, key, val);
+            return val;
+        }
+    }
+    set(row, key, val) {
+        const idx = row[kKeys].indexOf(key);
+        if (idx !== -1) {
+            setVisitor.visit(Reflect.get(row, kVals), idx, val);
+            // Cache key/val lookups
+            return Reflect.set(row, key, val);
+        }
+        else if (Reflect.has(row, key)) {
+            return Reflect.set(row, key, val);
+        }
+        return false;
+    }
+}
+Object.defineProperties(MapRow.prototype, {
+    [Symbol.toStringTag]: { enumerable: false, configurable: false, value: 'Row' },
+    [kKeys]: { writable: true, enumerable: false, configurable: false, value: null },
+    [kVals]: { writable: true, enumerable: false, configurable: false, value: null },
+});
+
+//# sourceMappingURL=map.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/row/map.mjs.map b/igv_component/node_modules/apache-arrow/row/map.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..38932e571aa4107f2a8bd492819286a46e4aea2f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/row/map.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/row/struct.d.ts b/igv_component/node_modules/apache-arrow/row/struct.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..8e4c7bc28a4376cb2b5a112d3f3b2269f976ccd7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/row/struct.d.ts
@@ -0,0 +1,24 @@
+import { Data } from '../data.js';
+import { Struct, TypeMap } from '../type.js';
+/** @ignore */ declare const kParent: unique symbol;
+/** @ignore */ declare const kRowIndex: unique symbol;
+export declare type StructRowProxy<T extends TypeMap = any> = StructRow<T> & {
+    [P in keyof T]: T[P]['TValue'];
+} & {
+    [key: symbol]: any;
+};
+export declare class StructRow<T extends TypeMap = any> {
+    private [kRowIndex];
+    private [kParent];
+    constructor(parent: Data<Struct<T>>, rowIndex: number);
+    toArray(): T[string]["TValue"][];
+    toJSON(): { [P in string & keyof T]: T[P]["TValue"]; };
+    toString(): string;
+    [Symbol.iterator](): IterableIterator<[
+        keyof T,
+        {
+            [P in keyof T]: T[P]['TValue'] | null;
+        }[keyof T]
+    ]>;
+}
+export {};
diff --git a/igv_component/node_modules/apache-arrow/row/struct.d.ts.map b/igv_component/node_modules/apache-arrow/row/struct.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..6a4b43850a75fb0d4708ba09dcd4c08ac53714c2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/row/struct.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["row/struct.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,IAAI,EAAE,MAAM,YAAY,CAAC;AAElC,OAAO,EAAE,MAAM,EAAE,OAAO,EAAE,MAAM,YAAY,CAAC;AAK7C,cAAc,CAAC,QAAA,MAAM,OAAO,eAAuB,CAAC;AACpD,cAAc,CAAC,QAAA,MAAM,SAAS,eAAyB,CAAC;AAExD,oBAAY,cAAc,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,IAAI,SAAS,CAAC,CAAC,CAAC,GAAG;KAChE,CAAC,IAAI,MAAM,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,QAAQ,CAAC;CACjC,GAAG;IACA,CAAC,GAAG,EAAE,MAAM,GAAG,GAAG,CAAC;CACtB,CAAC;AAEF,qBAAa,SAAS,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG;IAE1C,QAAgB,CAAC,SAAS,CAAC,CAAS;IACpC,QAAgB,CAAC,OAAO,CAAC,CAAkB;gBAE/B,MAAM,EAAE,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC,EAAE,QAAQ,EAAE,MAAM;IAM9C,OAAO;IAEP,MAAM;IAWN,QAAQ;IAWf,CAAC,MAAM,CAAC,QAAQ,CAAC,IAAI,gBAAgB,CAAC;QAClC,MAAM,CAAC;QAAE;aAAG,CAAC,IAAI,MAAM,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI;SAAE,CAAC,MAAM,CAAC,CAAC;KAC9D,CAAC;CAGL","file":"struct.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/row/struct.js b/igv_component/node_modules/apache-arrow/row/struct.js
new file mode 100644
index 0000000000000000000000000000000000000000..ba4558118649b20548db96a5d448d0123a02f561
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/row/struct.js
@@ -0,0 +1,125 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.StructRow = void 0;
+const pretty_js_1 = require("../util/pretty.js");
+const get_js_1 = require("../visitor/get.js");
+const set_js_1 = require("../visitor/set.js");
+/** @ignore */ const kParent = Symbol.for('parent');
+/** @ignore */ const kRowIndex = Symbol.for('rowIndex');
+class StructRow {
+    constructor(parent, rowIndex) {
+        this[kParent] = parent;
+        this[kRowIndex] = rowIndex;
+        return new Proxy(this, new StructRowProxyHandler());
+    }
+    toArray() { return Object.values(this.toJSON()); }
+    toJSON() {
+        const i = this[kRowIndex];
+        const parent = this[kParent];
+        const keys = parent.type.children;
+        const json = {};
+        for (let j = -1, n = keys.length; ++j < n;) {
+            json[keys[j].name] = get_js_1.instance.visit(parent.children[j], i);
+        }
+        return json;
+    }
+    toString() {
+        return `{${[...this].map(([key, val]) => `${(0, pretty_js_1.valueToString)(key)}: ${(0, pretty_js_1.valueToString)(val)}`).join(', ')}}`;
+    }
+    [Symbol.for('nodejs.util.inspect.custom')]() {
+        return this.toString();
+    }
+    [Symbol.iterator]() {
+        return new StructRowIterator(this[kParent], this[kRowIndex]);
+    }
+}
+exports.StructRow = StructRow;
+class StructRowIterator {
+    constructor(data, rowIndex) {
+        this.childIndex = 0;
+        this.children = data.children;
+        this.rowIndex = rowIndex;
+        this.childFields = data.type.children;
+        this.numChildren = this.childFields.length;
+    }
+    [Symbol.iterator]() { return this; }
+    next() {
+        const i = this.childIndex;
+        if (i < this.numChildren) {
+            this.childIndex = i + 1;
+            return {
+                done: false,
+                value: [
+                    this.childFields[i].name,
+                    get_js_1.instance.visit(this.children[i], this.rowIndex)
+                ]
+            };
+        }
+        return { done: true, value: null };
+    }
+}
+Object.defineProperties(StructRow.prototype, {
+    [Symbol.toStringTag]: { enumerable: false, configurable: false, value: 'Row' },
+    [kParent]: { writable: true, enumerable: false, configurable: false, value: null },
+    [kRowIndex]: { writable: true, enumerable: false, configurable: false, value: -1 },
+});
+class StructRowProxyHandler {
+    isExtensible() { return false; }
+    deleteProperty() { return false; }
+    preventExtensions() { return true; }
+    ownKeys(row) {
+        return row[kParent].type.children.map((f) => f.name);
+    }
+    has(row, key) {
+        return row[kParent].type.children.findIndex((f) => f.name === key) !== -1;
+    }
+    getOwnPropertyDescriptor(row, key) {
+        if (row[kParent].type.children.findIndex((f) => f.name === key) !== -1) {
+            return { writable: true, enumerable: true, configurable: true };
+        }
+        return;
+    }
+    get(row, key) {
+        // Look up key in row first
+        if (Reflect.has(row, key)) {
+            return row[key];
+        }
+        const idx = row[kParent].type.children.findIndex((f) => f.name === key);
+        if (idx !== -1) {
+            const val = get_js_1.instance.visit(row[kParent].children[idx], row[kRowIndex]);
+            // Cache key/val lookups
+            Reflect.set(row, key, val);
+            return val;
+        }
+    }
+    set(row, key, val) {
+        const idx = row[kParent].type.children.findIndex((f) => f.name === key);
+        if (idx !== -1) {
+            set_js_1.instance.visit(row[kParent].children[idx], row[kRowIndex], val);
+            // Cache key/val lookups
+            return Reflect.set(row, key, val);
+        }
+        else if (Reflect.has(row, key) || typeof key === 'symbol') {
+            return Reflect.set(row, key, val);
+        }
+        return false;
+    }
+}
+
+//# sourceMappingURL=struct.js.map
diff --git a/igv_component/node_modules/apache-arrow/row/struct.js.map b/igv_component/node_modules/apache-arrow/row/struct.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..f2d079fa825c522580ac23c898da4606ea8d7b46
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/row/struct.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["row/struct.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAKrB,iDAAkD;AAClD,8CAA2D;AAC3D,8CAA2D;AAE3D,cAAc,CAAC,MAAM,OAAO,GAAG,MAAM,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC;AACpD,cAAc,CAAC,MAAM,SAAS,GAAG,MAAM,CAAC,GAAG,CAAC,UAAU,CAAC,CAAC;AAQxD,MAAa,SAAS;IAKlB,YAAY,MAAuB,EAAE,QAAgB;QACjD,IAAI,CAAC,OAAO,CAAC,GAAG,MAAM,CAAC;QACvB,IAAI,CAAC,SAAS,CAAC,GAAG,QAAQ,CAAC;QAC3B,OAAO,IAAI,KAAK,CAAC,IAAI,EAAE,IAAI,qBAAqB,EAAE,CAAC,CAAC;IACxD,CAAC;IAEM,OAAO,KAAK,OAAO,MAAM,CAAC,MAAM,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC,CAAC;IAElD,MAAM;QACT,MAAM,CAAC,GAAG,IAAI,CAAC,SAAS,CAAC,CAAC;QAC1B,MAAM,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC,CAAC;QAC7B,MAAM,IAAI,GAAG,MAAM,CAAC,IAAI,CAAC,QAAQ,CAAC;QAClC,MAAM,IAAI,GAAG,EAAiD,CAAC;QAC/D,KAAK,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,GAAG,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,GAAG,CAAC,GAAG;YACxC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC,IAAwB,CAAC,GAAG,iBAAU,CAAC,KAAK,CAAC,MAAM,CAAC,QAAQ,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;SACpF;QACD,OAAO,IAAI,CAAC;IAChB,CAAC;IAEM,QAAQ;QACX,OAAO,IAAI,CAAC,GAAG,IAAI,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,EAAE,GAAG,CAAC,EAAE,EAAE,CACpC,GAAG,IAAA,yBAAa,EAAC,GAAG,CAAC,KAAK,IAAA,yBAAa,EAAC,GAAG,CAAC,EAAE,CACjD,CAAC,IAAI,CAAC,IAAI,CACP,GAAG,CAAC;IACZ,CAAC;IAEM,CAAC,MAAM,CAAC,GAAG,CAAC,4BAA4B,CAAC,CAAC;QAC7C,OAAO,IAAI,CAAC,QAAQ,EAAE,CAAC;IAC3B,CAAC;IAED,CAAC,MAAM,CAAC,QAAQ,CAAC;QAGb,OAAO,IAAI,iBAAiB,CAAC,IAAI,CAAC,OAAO,CAAC,EAAE,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC;IACjE,CAAC;CACJ;AAxCD,8BAwCC;AAED,MAAM,iBAAiB;IAWnB,YAAY,IAAqB,EAAE,QAAgB;QAC/C,IAAI,CAAC,UAAU,GAAG,CAAC,CAAC;QACpB,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,QAAQ,CAAC;QAC9B,IAAI,CAAC,QAAQ,GAAG,QAAQ,CAAC;QACzB,IAAI,CAAC,WAAW,GAAG,IAAI,CAAC,IAAI,CAAC,QAAQ,CAAC;QACtC,IAAI,CAAC,WAAW,GAAG,IAAI,CAAC,WAAW,CAAC,MAAM,CAAC;IAC/C,CAAC;IAED,CAAC,MAAM,CAAC,QAAQ,CAAC,KAAK,OAAO,IAAI,CAAC,CAAC,CAAC;IAEpC,IAAI;QACA,MAAM,CAAC,GAAG,IAAI,CAAC,UAAU,CAAC;QAC1B,IAAI,CAAC,GAAG,IAAI,CAAC,WAAW,EAAE;YACtB,IAAI,CAAC,UAAU,GAAG,CAAC,GAAG,CAAC,CAAC;YACxB,OAAO;gBACH,IAAI,EAAE,KAAK;gBACX,KAAK,EAAE;oBACH,IAAI,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI;oBACxB,iBAAU,CAAC,KAAK,CAAC,IAAI,CAAC,QAAQ,CAAC,CAAC,CAAC,EAAE,IAAI,CAAC,QAAQ,CAAC;iBACpD;aAC+B,CAAC;SACxC;QACD,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,IAAI,EAAgC,CAAC;IACrE,CAAC;CACJ;AAED,MAAM,CAAC,gBAAgB,CAAC,SAAS,CAAC,SAAS,EAAE;IACzC,CAAC,MAAM,CAAC,WAAW,CAAC,EAAE,EAAE,UAAU,EAAE,KAAK,EAAE,YAAY,EAAE,KAAK,EAAE,KAAK,EAAE,KAAK,EAAE;IAC9E,CAAC,OAAO,CAAC,EAAE,EAAE,QAAQ,EAAE,IAAI,EAAE,UAAU,EAAE,KAAK,EAAE,YAAY,EAAE,KAAK,EAAE,KAAK,EAAE,IAAI,EAAE;IAClF,CAAC,SAAS,CAAC,EAAE,EAAE,QAAQ,EAAE,IAAI,EAAE,UAAU,EAAE,KAAK,EAAE,YAAY,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC,CAAC,EAAE;CACrF,CAAC,CAAC;AAEH,MAAM,qBAAqB;IACvB,YAAY,KAAK,OAAO,KAAK,CAAC,CAAC,CAAC;IAChC,cAAc,KAAK,OAAO,KAAK,CAAC,CAAC,CAAC;IAClC,iBAAiB,KAAK,OAAO,IAAI,CAAC,CAAC,CAAC;IACpC,OAAO,CAAC,GAAiB;QACrB,OAAO,GAAG,CAAC,OAAO,CAAC,CAAC,IAAI,CAAC,QAAQ,CAAC,GAAG,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC;IACzD,CAAC;IACD,GAAG,CAAC,GAAiB,EAAE,GAAW;QAC9B,OAAO,GAAG,CAAC,OAAO,CAAC,CAAC,IAAI,CAAC,QAAQ,CAAC,SAAS,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,IAAI,KAAK,GAAG,CAAC,KAAK,CAAC,CAAC,CAAC;IAC9E,CAAC;IACD,wBAAwB,CAAC,GAAiB,EAAE,GAAW;QACnD,IAAI,GAAG,CAAC,OAAO,CAAC,CAAC,IAAI,CAAC,QAAQ,CAAC,SAAS,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,IAAI,KAAK,GAAG,CAAC,KAAK,CAAC,CAAC,EAAE;YACpE,OAAO,EAAE,QAAQ,EAAE,IAAI,EAAE,UAAU,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,CAAC;SACnE;QACD,OAAO;IACX,CAAC;IACD,GAAG,CAAC,GAAiB,EAAE,GAAW;QAC9B,2BAA2B;QAC3B,IAAI,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,CAAC,EAAE;YACvB,OAAQ,GAAW,CAAC,GAAG,CAAC,CAAC;SAC5B;QACD,MAAM,GAAG,GAAG,GAAG,CAAC,OAAO,CAAC,CAAC,IAAI,CAAC,QAAQ,CAAC,SAAS,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,IAAI,KAAK,GAAG,CAAC,CAAC;QACxE,IAAI,GAAG,KAAK,CAAC,CAAC,EAAE;YACZ,MAAM,GAAG,GAAG,iBAAU,CAAC,KAAK,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC,QAAQ,CAAC,GAAG,CAAC,EAAE,GAAG,CAAC,SAAS,CAAC,CAAC,CAAC;YACzE,wBAAwB;YACxB,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,EAAE,GAAG,CAAC,CAAC;YAC3B,OAAO,GAAG,CAAC;SACd;IACL,CAAC;IACD,GAAG,CAAC,GAAiB,EAAE,GAAW,EAAE,GAAQ;QACxC,MAAM,GAAG,GAAG,GAAG,CAAC,OAAO,CAAC,CAAC,IAAI,CAAC,QAAQ,CAAC,SAAS,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,IAAI,KAAK,GAAG,CAAC,CAAC;QACxE,IAAI,GAAG,KAAK,CAAC,CAAC,EAAE;YACZ,iBAAU,CAAC,KAAK,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC,QAAQ,CAAC,GAAG,CAAC,EAAE,GAAG,CAAC,SAAS,CAAC,EAAE,GAAG,CAAC,CAAC;YAClE,wBAAwB;YACxB,OAAO,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,EAAE,GAAG,CAAC,CAAC;SACrC;aAAM,IAAI,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,CAAC,IAAI,OAAO,GAAG,KAAK,QAAQ,EAAE;YACzD,OAAO,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,EAAE,GAAG,CAAC,CAAC;SACrC;QACD,OAAO,KAAK,CAAC;IACjB,CAAC;CACJ","file":"struct.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/row/struct.mjs b/igv_component/node_modules/apache-arrow/row/struct.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..c166a6849df36baa192b3f423ffd33f5204fb3ae
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/row/struct.mjs
@@ -0,0 +1,121 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { valueToString } from '../util/pretty.mjs';
+import { instance as getVisitor } from '../visitor/get.mjs';
+import { instance as setVisitor } from '../visitor/set.mjs';
+/** @ignore */ const kParent = Symbol.for('parent');
+/** @ignore */ const kRowIndex = Symbol.for('rowIndex');
+export class StructRow {
+    constructor(parent, rowIndex) {
+        this[kParent] = parent;
+        this[kRowIndex] = rowIndex;
+        return new Proxy(this, new StructRowProxyHandler());
+    }
+    toArray() { return Object.values(this.toJSON()); }
+    toJSON() {
+        const i = this[kRowIndex];
+        const parent = this[kParent];
+        const keys = parent.type.children;
+        const json = {};
+        for (let j = -1, n = keys.length; ++j < n;) {
+            json[keys[j].name] = getVisitor.visit(parent.children[j], i);
+        }
+        return json;
+    }
+    toString() {
+        return `{${[...this].map(([key, val]) => `${valueToString(key)}: ${valueToString(val)}`).join(', ')}}`;
+    }
+    [Symbol.for('nodejs.util.inspect.custom')]() {
+        return this.toString();
+    }
+    [Symbol.iterator]() {
+        return new StructRowIterator(this[kParent], this[kRowIndex]);
+    }
+}
+class StructRowIterator {
+    constructor(data, rowIndex) {
+        this.childIndex = 0;
+        this.children = data.children;
+        this.rowIndex = rowIndex;
+        this.childFields = data.type.children;
+        this.numChildren = this.childFields.length;
+    }
+    [Symbol.iterator]() { return this; }
+    next() {
+        const i = this.childIndex;
+        if (i < this.numChildren) {
+            this.childIndex = i + 1;
+            return {
+                done: false,
+                value: [
+                    this.childFields[i].name,
+                    getVisitor.visit(this.children[i], this.rowIndex)
+                ]
+            };
+        }
+        return { done: true, value: null };
+    }
+}
+Object.defineProperties(StructRow.prototype, {
+    [Symbol.toStringTag]: { enumerable: false, configurable: false, value: 'Row' },
+    [kParent]: { writable: true, enumerable: false, configurable: false, value: null },
+    [kRowIndex]: { writable: true, enumerable: false, configurable: false, value: -1 },
+});
+class StructRowProxyHandler {
+    isExtensible() { return false; }
+    deleteProperty() { return false; }
+    preventExtensions() { return true; }
+    ownKeys(row) {
+        return row[kParent].type.children.map((f) => f.name);
+    }
+    has(row, key) {
+        return row[kParent].type.children.findIndex((f) => f.name === key) !== -1;
+    }
+    getOwnPropertyDescriptor(row, key) {
+        if (row[kParent].type.children.findIndex((f) => f.name === key) !== -1) {
+            return { writable: true, enumerable: true, configurable: true };
+        }
+        return;
+    }
+    get(row, key) {
+        // Look up key in row first
+        if (Reflect.has(row, key)) {
+            return row[key];
+        }
+        const idx = row[kParent].type.children.findIndex((f) => f.name === key);
+        if (idx !== -1) {
+            const val = getVisitor.visit(row[kParent].children[idx], row[kRowIndex]);
+            // Cache key/val lookups
+            Reflect.set(row, key, val);
+            return val;
+        }
+    }
+    set(row, key, val) {
+        const idx = row[kParent].type.children.findIndex((f) => f.name === key);
+        if (idx !== -1) {
+            setVisitor.visit(row[kParent].children[idx], row[kRowIndex], val);
+            // Cache key/val lookups
+            return Reflect.set(row, key, val);
+        }
+        else if (Reflect.has(row, key) || typeof key === 'symbol') {
+            return Reflect.set(row, key, val);
+        }
+        return false;
+    }
+}
+
+//# sourceMappingURL=struct.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/row/struct.mjs.map b/igv_component/node_modules/apache-arrow/row/struct.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..f47b5f904c5fdadd724cbbc4d535efc4b45888c3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/row/struct.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["row/struct.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAKrB,OAAO,EAAE,aAAa,EAAE,MAAM,mBAAmB,CAAC;AAClD,OAAO,EAAE,QAAQ,IAAI,UAAU,EAAE,MAAM,mBAAmB,CAAC;AAC3D,OAAO,EAAE,QAAQ,IAAI,UAAU,EAAE,MAAM,mBAAmB,CAAC;AAE3D,cAAc,CAAC,MAAM,OAAO,GAAG,MAAM,CAAC,GAAG,CAAC,QAAQ,CAAC,CAAC;AACpD,cAAc,CAAC,MAAM,SAAS,GAAG,MAAM,CAAC,GAAG,CAAC,UAAU,CAAC,CAAC;AAQxD,MAAM,OAAO,SAAS;IAKlB,YAAY,MAAuB,EAAE,QAAgB;QACjD,IAAI,CAAC,OAAO,CAAC,GAAG,MAAM,CAAC;QACvB,IAAI,CAAC,SAAS,CAAC,GAAG,QAAQ,CAAC;QAC3B,OAAO,IAAI,KAAK,CAAC,IAAI,EAAE,IAAI,qBAAqB,EAAE,CAAC,CAAC;IACxD,CAAC;IAEM,OAAO,KAAK,OAAO,MAAM,CAAC,MAAM,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC,CAAC;IAElD,MAAM;QACT,MAAM,CAAC,GAAG,IAAI,CAAC,SAAS,CAAC,CAAC;QAC1B,MAAM,MAAM,GAAG,IAAI,CAAC,OAAO,CAAC,CAAC;QAC7B,MAAM,IAAI,GAAG,MAAM,CAAC,IAAI,CAAC,QAAQ,CAAC;QAClC,MAAM,IAAI,GAAG,EAAiD,CAAC;QAC/D,KAAK,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,GAAG,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,GAAG,CAAC,GAAG;YACxC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC,IAAwB,CAAC,GAAG,UAAU,CAAC,KAAK,CAAC,MAAM,CAAC,QAAQ,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC;SACpF;QACD,OAAO,IAAI,CAAC;IAChB,CAAC;IAEM,QAAQ;QACX,OAAO,IAAI,CAAC,GAAG,IAAI,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,EAAE,GAAG,CAAC,EAAE,EAAE,CACpC,GAAG,aAAa,CAAC,GAAG,CAAC,KAAK,aAAa,CAAC,GAAG,CAAC,EAAE,CACjD,CAAC,IAAI,CAAC,IAAI,CACP,GAAG,CAAC;IACZ,CAAC;IAEM,CAAC,MAAM,CAAC,GAAG,CAAC,4BAA4B,CAAC,CAAC;QAC7C,OAAO,IAAI,CAAC,QAAQ,EAAE,CAAC;IAC3B,CAAC;IAED,CAAC,MAAM,CAAC,QAAQ,CAAC;QAGb,OAAO,IAAI,iBAAiB,CAAC,IAAI,CAAC,OAAO,CAAC,EAAE,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC;IACjE,CAAC;CACJ;AAED,MAAM,iBAAiB;IAWnB,YAAY,IAAqB,EAAE,QAAgB;QAC/C,IAAI,CAAC,UAAU,GAAG,CAAC,CAAC;QACpB,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,QAAQ,CAAC;QAC9B,IAAI,CAAC,QAAQ,GAAG,QAAQ,CAAC;QACzB,IAAI,CAAC,WAAW,GAAG,IAAI,CAAC,IAAI,CAAC,QAAQ,CAAC;QACtC,IAAI,CAAC,WAAW,GAAG,IAAI,CAAC,WAAW,CAAC,MAAM,CAAC;IAC/C,CAAC;IAED,CAAC,MAAM,CAAC,QAAQ,CAAC,KAAK,OAAO,IAAI,CAAC,CAAC,CAAC;IAEpC,IAAI;QACA,MAAM,CAAC,GAAG,IAAI,CAAC,UAAU,CAAC;QAC1B,IAAI,CAAC,GAAG,IAAI,CAAC,WAAW,EAAE;YACtB,IAAI,CAAC,UAAU,GAAG,CAAC,GAAG,CAAC,CAAC;YACxB,OAAO;gBACH,IAAI,EAAE,KAAK;gBACX,KAAK,EAAE;oBACH,IAAI,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC,IAAI;oBACxB,UAAU,CAAC,KAAK,CAAC,IAAI,CAAC,QAAQ,CAAC,CAAC,CAAC,EAAE,IAAI,CAAC,QAAQ,CAAC;iBACpD;aAC+B,CAAC;SACxC;QACD,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,IAAI,EAAgC,CAAC;IACrE,CAAC;CACJ;AAED,MAAM,CAAC,gBAAgB,CAAC,SAAS,CAAC,SAAS,EAAE;IACzC,CAAC,MAAM,CAAC,WAAW,CAAC,EAAE,EAAE,UAAU,EAAE,KAAK,EAAE,YAAY,EAAE,KAAK,EAAE,KAAK,EAAE,KAAK,EAAE;IAC9E,CAAC,OAAO,CAAC,EAAE,EAAE,QAAQ,EAAE,IAAI,EAAE,UAAU,EAAE,KAAK,EAAE,YAAY,EAAE,KAAK,EAAE,KAAK,EAAE,IAAI,EAAE;IAClF,CAAC,SAAS,CAAC,EAAE,EAAE,QAAQ,EAAE,IAAI,EAAE,UAAU,EAAE,KAAK,EAAE,YAAY,EAAE,KAAK,EAAE,KAAK,EAAE,CAAC,CAAC,EAAE;CACrF,CAAC,CAAC;AAEH,MAAM,qBAAqB;IACvB,YAAY,KAAK,OAAO,KAAK,CAAC,CAAC,CAAC;IAChC,cAAc,KAAK,OAAO,KAAK,CAAC,CAAC,CAAC;IAClC,iBAAiB,KAAK,OAAO,IAAI,CAAC,CAAC,CAAC;IACpC,OAAO,CAAC,GAAiB;QACrB,OAAO,GAAG,CAAC,OAAO,CAAC,CAAC,IAAI,CAAC,QAAQ,CAAC,GAAG,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC;IACzD,CAAC;IACD,GAAG,CAAC,GAAiB,EAAE,GAAW;QAC9B,OAAO,GAAG,CAAC,OAAO,CAAC,CAAC,IAAI,CAAC,QAAQ,CAAC,SAAS,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,IAAI,KAAK,GAAG,CAAC,KAAK,CAAC,CAAC,CAAC;IAC9E,CAAC;IACD,wBAAwB,CAAC,GAAiB,EAAE,GAAW;QACnD,IAAI,GAAG,CAAC,OAAO,CAAC,CAAC,IAAI,CAAC,QAAQ,CAAC,SAAS,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,IAAI,KAAK,GAAG,CAAC,KAAK,CAAC,CAAC,EAAE;YACpE,OAAO,EAAE,QAAQ,EAAE,IAAI,EAAE,UAAU,EAAE,IAAI,EAAE,YAAY,EAAE,IAAI,EAAE,CAAC;SACnE;QACD,OAAO;IACX,CAAC;IACD,GAAG,CAAC,GAAiB,EAAE,GAAW;QAC9B,2BAA2B;QAC3B,IAAI,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,CAAC,EAAE;YACvB,OAAQ,GAAW,CAAC,GAAG,CAAC,CAAC;SAC5B;QACD,MAAM,GAAG,GAAG,GAAG,CAAC,OAAO,CAAC,CAAC,IAAI,CAAC,QAAQ,CAAC,SAAS,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,IAAI,KAAK,GAAG,CAAC,CAAC;QACxE,IAAI,GAAG,KAAK,CAAC,CAAC,EAAE;YACZ,MAAM,GAAG,GAAG,UAAU,CAAC,KAAK,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC,QAAQ,CAAC,GAAG,CAAC,EAAE,GAAG,CAAC,SAAS,CAAC,CAAC,CAAC;YACzE,wBAAwB;YACxB,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,EAAE,GAAG,CAAC,CAAC;YAC3B,OAAO,GAAG,CAAC;SACd;IACL,CAAC;IACD,GAAG,CAAC,GAAiB,EAAE,GAAW,EAAE,GAAQ;QACxC,MAAM,GAAG,GAAG,GAAG,CAAC,OAAO,CAAC,CAAC,IAAI,CAAC,QAAQ,CAAC,SAAS,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,IAAI,KAAK,GAAG,CAAC,CAAC;QACxE,IAAI,GAAG,KAAK,CAAC,CAAC,EAAE;YACZ,UAAU,CAAC,KAAK,CAAC,GAAG,CAAC,OAAO,CAAC,CAAC,QAAQ,CAAC,GAAG,CAAC,EAAE,GAAG,CAAC,SAAS,CAAC,EAAE,GAAG,CAAC,CAAC;YAClE,wBAAwB;YACxB,OAAO,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,EAAE,GAAG,CAAC,CAAC;SACrC;aAAM,IAAI,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,CAAC,IAAI,OAAO,GAAG,KAAK,QAAQ,EAAE;YACzD,OAAO,OAAO,CAAC,GAAG,CAAC,GAAG,EAAE,GAAG,EAAE,GAAG,CAAC,CAAC;SACrC;QACD,OAAO,KAAK,CAAC;IACjB,CAAC;CACJ","file":"struct.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/schema.d.ts b/igv_component/node_modules/apache-arrow/schema.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e7cca8ed8a9439f1a3b65084324fd0dc8d2c7d00
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/schema.d.ts
@@ -0,0 +1,50 @@
+import { DataType, TypeMap } from './type.js';
+export declare class Schema<T extends TypeMap = any> {
+    readonly fields: Field<T[keyof T]>[];
+    readonly metadata: Map<string, string>;
+    readonly dictionaries: Map<number, DataType>;
+    constructor(fields?: Field<T[keyof T]>[], metadata?: Map<string, string> | null, dictionaries?: Map<number, DataType> | null);
+    get [Symbol.toStringTag](): string;
+    get names(): (keyof T)[];
+    toString(): string;
+    /**
+     * Construct a new Schema containing only specified fields.
+     *
+     * @param fieldNames Names of fields to keep.
+     * @returns A new Schema of fields matching the specified names.
+     */
+    select<K extends keyof T = any>(fieldNames: K[]): Schema<{ [P in K]: T[P]; }>;
+    /**
+     * Construct a new Schema containing only fields at the specified indices.
+     *
+     * @param fieldIndices Indices of fields to keep.
+     * @returns A new Schema of fields at the specified indices.
+     */
+    selectAt<K extends T = any>(fieldIndices: number[]): Schema<K>;
+    assign<R extends TypeMap = any>(schema: Schema<R>): Schema<T & R>;
+    assign<R extends TypeMap = any>(...fields: (Field<R[keyof R]> | Field<R[keyof R]>[])[]): Schema<T & R>;
+}
+export declare class Field<T extends DataType = any> {
+    static new<T extends DataType = any>(props: {
+        name: string | number;
+        type: T;
+        nullable?: boolean;
+        metadata?: Map<string, string> | null;
+    }): Field<T>;
+    static new<T extends DataType = any>(name: string | number | Field<T>, type: T, nullable?: boolean, metadata?: Map<string, string> | null): Field<T>;
+    readonly type: T;
+    readonly name: string;
+    readonly nullable: boolean;
+    readonly metadata: Map<string, string>;
+    constructor(name: string, type: T, nullable?: boolean, metadata?: Map<string, string> | null);
+    get typeId(): import("./enum.js").Type;
+    get [Symbol.toStringTag](): string;
+    toString(): string;
+    clone<R extends DataType = T>(props: {
+        name?: string | number;
+        type?: R;
+        nullable?: boolean;
+        metadata?: Map<string, string> | null;
+    }): Field<R>;
+    clone<R extends DataType = T>(name?: string | number | Field<T>, type?: R, nullable?: boolean, metadata?: Map<string, string> | null): Field<R>;
+}
diff --git a/igv_component/node_modules/apache-arrow/schema.d.ts.map b/igv_component/node_modules/apache-arrow/schema.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..319e5a018f28dc9c5c9308061335be8e97b729ec
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/schema.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["schema.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,QAAQ,EAAE,OAAO,EAAE,MAAM,WAAW,CAAC;AAE9C,qBAAa,MAAM,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG;IAEvC,SAAgB,MAAM,EAAE,KAAK,CAAC,CAAC,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC;IAC5C,SAAgB,QAAQ,EAAE,GAAG,CAAC,MAAM,EAAE,MAAM,CAAC,CAAC;IAC9C,SAAgB,YAAY,EAAE,GAAG,CAAC,MAAM,EAAE,QAAQ,CAAC,CAAC;gBAGhD,MAAM,GAAE,KAAK,CAAC,CAAC,CAAC,MAAM,CAAC,CAAC,CAAC,EAAO,EAChC,QAAQ,CAAC,EAAE,GAAG,CAAC,MAAM,EAAE,MAAM,CAAC,GAAG,IAAI,EACrC,YAAY,CAAC,EAAE,GAAG,CAAC,MAAM,EAAE,QAAQ,CAAC,GAAG,IAAI;IAQ/C,IAAW,CAAC,MAAM,CAAC,WAAW,CAAC,WAAuB;IAEtD,IAAW,KAAK,IAAI,CAAC,MAAM,CAAC,CAAC,EAAE,CAA2C;IAEnE,QAAQ;IAIf;;;;;OAKG;IACI,MAAM,CAAC,CAAC,SAAS,MAAM,CAAC,GAAG,GAAG,EAAE,UAAU,EAAE,CAAC,EAAE;IAMtD;;;;;OAKG;IACI,QAAQ,CAAC,CAAC,SAAS,CAAC,GAAG,GAAG,EAAE,YAAY,EAAE,MAAM,EAAE;IAKlD,MAAM,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,EAAE,MAAM,EAAE,MAAM,CAAC,CAAC,CAAC,GAAG,MAAM,CAAC,CAAC,GAAG,CAAC,CAAC;IACjE,MAAM,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,EAAE,GAAG,MAAM,EAAE,CAAC,KAAK,CAAC,CAAC,CAAC,MAAM,CAAC,CAAC,CAAC,GAAG,KAAK,CAAC,CAAC,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,GAAG,MAAM,CAAC,CAAC,GAAG,CAAC,CAAC;CAyBhH;AAQD,qBAAa,KAAK,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG;WAEzB,GAAG,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,KAAK,EAAE;QAAE,IAAI,EAAE,MAAM,GAAG,MAAM,CAAC;QAAC,IAAI,EAAE,CAAC,CAAC;QAAC,QAAQ,CAAC,EAAE,OAAO,CAAC;QAAC,QAAQ,CAAC,EAAE,GAAG,CAAC,MAAM,EAAE,MAAM,CAAC,GAAG,IAAI,CAAA;KAAE,GAAG,KAAK,CAAC,CAAC,CAAC;WAC7I,GAAG,CAAC,CAAC,SAAS,QAAQ,GAAG,GAAG,EAAE,IAAI,EAAE,MAAM,GAAG,MAAM,GAAG,KAAK,CAAC,CAAC,CAAC,EAAE,IAAI,EAAE,CAAC,EAAE,QAAQ,CAAC,EAAE,OAAO,EAAE,QAAQ,CAAC,EAAE,GAAG,CAAC,MAAM,EAAE,MAAM,CAAC,GAAG,IAAI,GAAG,KAAK,CAAC,CAAC,CAAC;IAa3J,SAAgB,IAAI,EAAE,CAAC,CAAC;IACxB,SAAgB,IAAI,EAAE,MAAM,CAAC;IAC7B,SAAgB,QAAQ,EAAE,OAAO,CAAC;IAClC,SAAgB,QAAQ,EAAE,GAAG,CAAC,MAAM,EAAE,MAAM,CAAC,CAAC;gBAElC,IAAI,EAAE,MAAM,EAAE,IAAI,EAAE,CAAC,EAAE,QAAQ,UAAQ,EAAE,QAAQ,CAAC,EAAE,GAAG,CAAC,MAAM,EAAE,MAAM,CAAC,GAAG,IAAI;IAO1F,IAAW,MAAM,6BAA+B;IAChD,IAAW,CAAC,MAAM,CAAC,WAAW,CAAC,WAAsB;IAC9C,QAAQ;IACR,KAAK,CAAC,CAAC,SAAS,QAAQ,GAAG,CAAC,EAAE,KAAK,EAAE;QAAE,IAAI,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;QAAC,IAAI,CAAC,EAAE,CAAC,CAAC;QAAC,QAAQ,CAAC,EAAE,OAAO,CAAC;QAAC,QAAQ,CAAC,EAAE,GAAG,CAAC,MAAM,EAAE,MAAM,CAAC,GAAG,IAAI,CAAA;KAAE,GAAG,KAAK,CAAC,CAAC,CAAC;IAC/I,KAAK,CAAC,CAAC,SAAS,QAAQ,GAAG,CAAC,EAAE,IAAI,CAAC,EAAE,MAAM,GAAG,MAAM,GAAG,KAAK,CAAC,CAAC,CAAC,EAAE,IAAI,CAAC,EAAE,CAAC,EAAE,QAAQ,CAAC,EAAE,OAAO,EAAE,QAAQ,CAAC,EAAE,GAAG,CAAC,MAAM,EAAE,MAAM,CAAC,GAAG,IAAI,GAAG,KAAK,CAAC,CAAC,CAAC;CAQzJ","file":"schema.d.ts","sourceRoot":"src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/schema.js b/igv_component/node_modules/apache-arrow/schema.js
new file mode 100644
index 0000000000000000000000000000000000000000..f0a23830138f1866f5ffee9a23ca3022e0f1fc7a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/schema.js
@@ -0,0 +1,140 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Field = exports.Schema = void 0;
+const type_js_1 = require("./type.js");
+class Schema {
+    constructor(fields = [], metadata, dictionaries) {
+        this.fields = (fields || []);
+        this.metadata = metadata || new Map();
+        if (!dictionaries) {
+            dictionaries = generateDictionaryMap(fields);
+        }
+        this.dictionaries = dictionaries;
+    }
+    get [Symbol.toStringTag]() { return 'Schema'; }
+    get names() { return this.fields.map((f) => f.name); }
+    toString() {
+        return `Schema<{ ${this.fields.map((f, i) => `${i}: ${f}`).join(', ')} }>`;
+    }
+    /**
+     * Construct a new Schema containing only specified fields.
+     *
+     * @param fieldNames Names of fields to keep.
+     * @returns A new Schema of fields matching the specified names.
+     */
+    select(fieldNames) {
+        const names = new Set(fieldNames);
+        const fields = this.fields.filter((f) => names.has(f.name));
+        return new Schema(fields, this.metadata);
+    }
+    /**
+     * Construct a new Schema containing only fields at the specified indices.
+     *
+     * @param fieldIndices Indices of fields to keep.
+     * @returns A new Schema of fields at the specified indices.
+     */
+    selectAt(fieldIndices) {
+        const fields = fieldIndices.map((i) => this.fields[i]).filter(Boolean);
+        return new Schema(fields, this.metadata);
+    }
+    assign(...args) {
+        const other = (args[0] instanceof Schema
+            ? args[0]
+            : Array.isArray(args[0])
+                ? new Schema(args[0])
+                : new Schema(args));
+        const curFields = [...this.fields];
+        const metadata = mergeMaps(mergeMaps(new Map(), this.metadata), other.metadata);
+        const newFields = other.fields.filter((f2) => {
+            const i = curFields.findIndex((f) => f.name === f2.name);
+            return ~i ? (curFields[i] = f2.clone({
+                metadata: mergeMaps(mergeMaps(new Map(), curFields[i].metadata), f2.metadata)
+            })) && false : true;
+        });
+        const newDictionaries = generateDictionaryMap(newFields, new Map());
+        return new Schema([...curFields, ...newFields], metadata, new Map([...this.dictionaries, ...newDictionaries]));
+    }
+}
+exports.Schema = Schema;
+// Add these here so they're picked up by the externs creator
+// in the build, and closure-compiler doesn't minify them away
+Schema.prototype.fields = null;
+Schema.prototype.metadata = null;
+Schema.prototype.dictionaries = null;
+class Field {
+    constructor(name, type, nullable = false, metadata) {
+        this.name = name;
+        this.type = type;
+        this.nullable = nullable;
+        this.metadata = metadata || new Map();
+    }
+    /** @nocollapse */
+    static new(...args) {
+        let [name, type, nullable, metadata] = args;
+        if (args[0] && typeof args[0] === 'object') {
+            ({ name } = args[0]);
+            (type === undefined) && (type = args[0].type);
+            (nullable === undefined) && (nullable = args[0].nullable);
+            (metadata === undefined) && (metadata = args[0].metadata);
+        }
+        return new Field(`${name}`, type, nullable, metadata);
+    }
+    get typeId() { return this.type.typeId; }
+    get [Symbol.toStringTag]() { return 'Field'; }
+    toString() { return `${this.name}: ${this.type}`; }
+    clone(...args) {
+        let [name, type, nullable, metadata] = args;
+        (!args[0] || typeof args[0] !== 'object')
+            ? ([name = this.name, type = this.type, nullable = this.nullable, metadata = this.metadata] = args)
+            : ({ name = this.name, type = this.type, nullable = this.nullable, metadata = this.metadata } = args[0]);
+        return Field.new(name, type, nullable, metadata);
+    }
+}
+exports.Field = Field;
+// Add these here so they're picked up by the externs creator
+// in the build, and closure-compiler doesn't minify them away
+Field.prototype.type = null;
+Field.prototype.name = null;
+Field.prototype.nullable = null;
+Field.prototype.metadata = null;
+/** @ignore */
+function mergeMaps(m1, m2) {
+    return new Map([...(m1 || new Map()), ...(m2 || new Map())]);
+}
+/** @ignore */
+function generateDictionaryMap(fields, dictionaries = new Map()) {
+    for (let i = -1, n = fields.length; ++i < n;) {
+        const field = fields[i];
+        const type = field.type;
+        if (type_js_1.DataType.isDictionary(type)) {
+            if (!dictionaries.has(type.id)) {
+                dictionaries.set(type.id, type.dictionary);
+            }
+            else if (dictionaries.get(type.id) !== type.dictionary) {
+                throw new Error(`Cannot create Schema containing two different dictionaries with the same Id`);
+            }
+        }
+        if (type.children && type.children.length > 0) {
+            generateDictionaryMap(type.children, dictionaries);
+        }
+    }
+    return dictionaries;
+}
+
+//# sourceMappingURL=schema.js.map
diff --git a/igv_component/node_modules/apache-arrow/schema.js.map b/igv_component/node_modules/apache-arrow/schema.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..c9b8a752432377f6e54754b8f806707cef9fd68d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/schema.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/schema.mjs b/igv_component/node_modules/apache-arrow/schema.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..ef31f6e72a8a6545aaee44dae735beb5afd3c416
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/schema.mjs
@@ -0,0 +1,135 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { DataType } from './type.mjs';
+export class Schema {
+    constructor(fields = [], metadata, dictionaries) {
+        this.fields = (fields || []);
+        this.metadata = metadata || new Map();
+        if (!dictionaries) {
+            dictionaries = generateDictionaryMap(fields);
+        }
+        this.dictionaries = dictionaries;
+    }
+    get [Symbol.toStringTag]() { return 'Schema'; }
+    get names() { return this.fields.map((f) => f.name); }
+    toString() {
+        return `Schema<{ ${this.fields.map((f, i) => `${i}: ${f}`).join(', ')} }>`;
+    }
+    /**
+     * Construct a new Schema containing only specified fields.
+     *
+     * @param fieldNames Names of fields to keep.
+     * @returns A new Schema of fields matching the specified names.
+     */
+    select(fieldNames) {
+        const names = new Set(fieldNames);
+        const fields = this.fields.filter((f) => names.has(f.name));
+        return new Schema(fields, this.metadata);
+    }
+    /**
+     * Construct a new Schema containing only fields at the specified indices.
+     *
+     * @param fieldIndices Indices of fields to keep.
+     * @returns A new Schema of fields at the specified indices.
+     */
+    selectAt(fieldIndices) {
+        const fields = fieldIndices.map((i) => this.fields[i]).filter(Boolean);
+        return new Schema(fields, this.metadata);
+    }
+    assign(...args) {
+        const other = (args[0] instanceof Schema
+            ? args[0]
+            : Array.isArray(args[0])
+                ? new Schema(args[0])
+                : new Schema(args));
+        const curFields = [...this.fields];
+        const metadata = mergeMaps(mergeMaps(new Map(), this.metadata), other.metadata);
+        const newFields = other.fields.filter((f2) => {
+            const i = curFields.findIndex((f) => f.name === f2.name);
+            return ~i ? (curFields[i] = f2.clone({
+                metadata: mergeMaps(mergeMaps(new Map(), curFields[i].metadata), f2.metadata)
+            })) && false : true;
+        });
+        const newDictionaries = generateDictionaryMap(newFields, new Map());
+        return new Schema([...curFields, ...newFields], metadata, new Map([...this.dictionaries, ...newDictionaries]));
+    }
+}
+// Add these here so they're picked up by the externs creator
+// in the build, and closure-compiler doesn't minify them away
+Schema.prototype.fields = null;
+Schema.prototype.metadata = null;
+Schema.prototype.dictionaries = null;
+export class Field {
+    constructor(name, type, nullable = false, metadata) {
+        this.name = name;
+        this.type = type;
+        this.nullable = nullable;
+        this.metadata = metadata || new Map();
+    }
+    /** @nocollapse */
+    static new(...args) {
+        let [name, type, nullable, metadata] = args;
+        if (args[0] && typeof args[0] === 'object') {
+            ({ name } = args[0]);
+            (type === undefined) && (type = args[0].type);
+            (nullable === undefined) && (nullable = args[0].nullable);
+            (metadata === undefined) && (metadata = args[0].metadata);
+        }
+        return new Field(`${name}`, type, nullable, metadata);
+    }
+    get typeId() { return this.type.typeId; }
+    get [Symbol.toStringTag]() { return 'Field'; }
+    toString() { return `${this.name}: ${this.type}`; }
+    clone(...args) {
+        let [name, type, nullable, metadata] = args;
+        (!args[0] || typeof args[0] !== 'object')
+            ? ([name = this.name, type = this.type, nullable = this.nullable, metadata = this.metadata] = args)
+            : ({ name = this.name, type = this.type, nullable = this.nullable, metadata = this.metadata } = args[0]);
+        return Field.new(name, type, nullable, metadata);
+    }
+}
+// Add these here so they're picked up by the externs creator
+// in the build, and closure-compiler doesn't minify them away
+Field.prototype.type = null;
+Field.prototype.name = null;
+Field.prototype.nullable = null;
+Field.prototype.metadata = null;
+/** @ignore */
+function mergeMaps(m1, m2) {
+    return new Map([...(m1 || new Map()), ...(m2 || new Map())]);
+}
+/** @ignore */
+function generateDictionaryMap(fields, dictionaries = new Map()) {
+    for (let i = -1, n = fields.length; ++i < n;) {
+        const field = fields[i];
+        const type = field.type;
+        if (DataType.isDictionary(type)) {
+            if (!dictionaries.has(type.id)) {
+                dictionaries.set(type.id, type.dictionary);
+            }
+            else if (dictionaries.get(type.id) !== type.dictionary) {
+                throw new Error(`Cannot create Schema containing two different dictionaries with the same Id`);
+            }
+        }
+        if (type.children && type.children.length > 0) {
+            generateDictionaryMap(type.children, dictionaries);
+        }
+    }
+    return dictionaries;
+}
+
+//# sourceMappingURL=schema.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/schema.mjs.map b/igv_component/node_modules/apache-arrow/schema.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..ee01be4afbf4d797a09db49a760a9753fb209861
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/schema.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["schema.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,EAAE,QAAQ,EAAW,MAAM,WAAW,CAAC;AAE9C,MAAM,OAAO,MAAM;IAMf,YACI,SAA8B,EAAE,EAChC,QAAqC,EACrC,YAA2C;QAC3C,IAAI,CAAC,MAAM,GAAG,CAAC,MAAM,IAAI,EAAE,CAAwB,CAAC;QACpD,IAAI,CAAC,QAAQ,GAAG,QAAQ,IAAI,IAAI,GAAG,EAAE,CAAC;QACtC,IAAI,CAAC,YAAY,EAAE;YACf,YAAY,GAAG,qBAAqB,CAAC,MAAM,CAAC,CAAC;SAChD;QACD,IAAI,CAAC,YAAY,GAAG,YAAY,CAAC;IACrC,CAAC;IACD,IAAW,CAAC,MAAM,CAAC,WAAW,CAAC,KAAK,OAAO,QAAQ,CAAC,CAAC,CAAC;IAEtD,IAAW,KAAK,KAAkB,OAAO,IAAI,CAAC,MAAM,CAAC,GAAG,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC;IAEnE,QAAQ;QACX,OAAO,YAAY,IAAI,CAAC,MAAM,CAAC,GAAG,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,GAAG,CAAC,KAAK,CAAC,EAAE,CAAC,CAAC,IAAI,CAAC,IAAI,CAAC,KAAK,CAAC;IAC/E,CAAC;IAED;;;;;OAKG;IACI,MAAM,CAA0B,UAAe;QAClD,MAAM,KAAK,GAAG,IAAI,GAAG,CAAa,UAAU,CAAC,CAAC;QAC9C,MAAM,MAAM,GAAG,IAAI,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,KAAK,CAAC,GAAG,CAAC,CAAC,CAAC,IAAI,CAAC,CAAkB,CAAC;QAC7E,OAAO,IAAI,MAAM,CAAqB,MAAM,EAAE,IAAI,CAAC,QAAQ,CAAC,CAAC;IACjE,CAAC;IAED;;;;;OAKG;IACI,QAAQ,CAAoB,YAAsB;QACrD,MAAM,MAAM,GAAG,YAAY,CAAC,GAAG,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,MAAM,CAAC,OAAO,CAAwB,CAAC;QAC9F,OAAO,IAAI,MAAM,CAAI,MAAM,EAAE,IAAI,CAAC,QAAQ,CAAC,CAAC;IAChD,CAAC;IAIM,MAAM,CAA0B,GAAG,IAA6D;QAEnG,MAAM,KAAK,GAAG,CAAC,IAAI,CAAC,CAAC,CAAC,YAAY,MAAM;YACpC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAc;YACtB,CAAC,CAAC,KAAK,CAAC,OAAO,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC;gBACpB,CAAC,CAAC,IAAI,MAAM,CAAyB,IAAI,CAAC,CAAC,CAAC,CAAC;gBAC7C,CAAC,CAAC,IAAI,MAAM,CAAyB,IAAI,CAAC,CAAC,CAAC;QAEpD,MAAM,SAAS,GAAG,CAAC,GAAG,IAAI,CAAC,MAAM,CAAY,CAAC;QAC9C,MAAM,QAAQ,GAAG,SAAS,CAAC,SAAS,CAAC,IAAI,GAAG,EAAE,EAAE,IAAI,CAAC,QAAQ,CAAC,EAAE,KAAK,CAAC,QAAQ,CAAC,CAAC;QAChF,MAAM,SAAS,GAAG,KAAK,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC,EAAE,EAAE,EAAE;YACzC,MAAM,CAAC,GAAG,SAAS,CAAC,SAAS,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,IAAI,KAAK,EAAE,CAAC,IAAI,CAAC,CAAC;YACzD,OAAO,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,SAAS,CAAC,CAAC,CAAC,GAAG,EAAE,CAAC,KAAK,CAAC;gBACjC,QAAQ,EAAE,SAAS,CAAC,SAAS,CAAC,IAAI,GAAG,EAAE,EAAE,SAAS,CAAC,CAAC,CAAC,CAAC,QAAQ,CAAC,EAAE,EAAE,CAAC,QAAQ,CAAC;aAChF,CAAC,CAAC,IAAI,KAAK,CAAC,CAAC,CAAC,IAAI,CAAC;QACxB,CAAC,CAAY,CAAC;QAEd,MAAM,eAAe,GAAG,qBAAqB,CAAC,SAAS,EAAE,IAAI,GAAG,EAAE,CAAC,CAAC;QAEpE,OAAO,IAAI,MAAM,CACb,CAAC,GAAG,SAAS,EAAE,GAAG,SAAS,CAAC,EAAE,QAAQ,EACtC,IAAI,GAAG,CAAC,CAAC,GAAG,IAAI,CAAC,YAAY,EAAE,GAAG,eAAe,CAAC,CAAC,CACtD,CAAC;IACN,CAAC;CACJ;AAED,6DAA6D;AAC7D,8DAA8D;AAC7D,MAAM,CAAC,SAAiB,CAAC,MAAM,GAAQ,IAAI,CAAC;AAC5C,MAAM,CAAC,SAAiB,CAAC,QAAQ,GAAQ,IAAI,CAAC;AAC9C,MAAM,CAAC,SAAiB,CAAC,YAAY,GAAQ,IAAI,CAAC;AAEnD,MAAM,OAAO,KAAK;IAqBd,YAAY,IAAY,EAAE,IAAO,EAAE,QAAQ,GAAG,KAAK,EAAE,QAAqC;QACtF,IAAI,CAAC,IAAI,GAAG,IAAI,CAAC;QACjB,IAAI,CAAC,IAAI,GAAG,IAAI,CAAC;QACjB,IAAI,CAAC,QAAQ,GAAG,QAAQ,CAAC;QACzB,IAAI,CAAC,QAAQ,GAAG,QAAQ,IAAI,IAAI,GAAG,EAAE,CAAC;IAC1C,CAAC;IAtBD,kBAAkB;IACX,MAAM,CAAC,GAAG,CAA2B,GAAG,IAAW;QACtD,IAAI,CAAC,IAAI,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,CAAC,GAAG,IAAI,CAAC;QAC5C,IAAI,IAAI,CAAC,CAAC,CAAC,IAAI,OAAO,IAAI,CAAC,CAAC,CAAC,KAAK,QAAQ,EAAE;YACxC,CAAC,EAAE,IAAI,EAAE,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC,CAAC;YACrB,CAAC,IAAI,KAAK,SAAS,CAAC,IAAI,CAAC,IAAI,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC;YAC9C,CAAC,QAAQ,KAAK,SAAS,CAAC,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC,QAAQ,CAAC,CAAC;YAC1D,CAAC,QAAQ,KAAK,SAAS,CAAC,IAAI,CAAC,QAAQ,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC,QAAQ,CAAC,CAAC;SAC7D;QACD,OAAO,IAAI,KAAK,CAAI,GAAG,IAAI,EAAE,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,CAAC,CAAC;IAC7D,CAAC;IAcD,IAAW,MAAM,KAAK,OAAO,IAAI,CAAC,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC;IAChD,IAAW,CAAC,MAAM,CAAC,WAAW,CAAC,KAAK,OAAO,OAAO,CAAC,CAAC,CAAC;IAC9C,QAAQ,KAAK,OAAO,GAAG,IAAI,CAAC,IAAI,KAAK,IAAI,CAAC,IAAI,EAAE,CAAC,CAAC,CAAC;IAGnD,KAAK,CAAyB,GAAG,IAAW;QAC/C,IAAI,CAAC,IAAI,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,CAAC,GAAG,IAAI,CAAC;QAC5C,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,OAAO,IAAI,CAAC,CAAC,CAAC,KAAK,QAAQ,CAAC;YACrC,CAAC,CAAC,CAAC,CAAC,IAAI,GAAG,IAAI,CAAC,IAAI,EAAE,IAAI,GAAG,IAAI,CAAC,IAAI,EAAE,QAAQ,GAAG,IAAI,CAAC,QAAQ,EAAE,QAAQ,GAAG,IAAI,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;YACnG,CAAC,CAAC,CAAC,EAAE,IAAI,GAAG,IAAI,CAAC,IAAI,EAAE,IAAI,GAAG,IAAI,CAAC,IAAI,EAAE,QAAQ,GAAG,IAAI,CAAC,QAAQ,EAAE,QAAQ,GAAG,IAAI,CAAC,QAAQ,EAAE,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC,CAAC;QAC7G,OAAO,KAAK,CAAC,GAAG,CAAI,IAAI,EAAE,IAAI,EAAE,QAAQ,EAAE,QAAQ,CAAC,CAAC;IACxD,CAAC;CACJ;AAED,6DAA6D;AAC7D,8DAA8D;AAC7D,KAAK,CAAC,SAAiB,CAAC,IAAI,GAAG,IAAI,CAAC;AACpC,KAAK,CAAC,SAAiB,CAAC,IAAI,GAAG,IAAI,CAAC;AACpC,KAAK,CAAC,SAAiB,CAAC,QAAQ,GAAG,IAAI,CAAC;AACxC,KAAK,CAAC,SAAiB,CAAC,QAAQ,GAAG,IAAI,CAAC;AAEzC,cAAc;AACd,SAAS,SAAS,CAAa,EAA2B,EAAE,EAA2B;IACnF,OAAO,IAAI,GAAG,CAAC,CAAC,GAAG,CAAC,EAAE,IAAI,IAAI,GAAG,EAAE,CAAC,EAAE,GAAG,CAAC,EAAE,IAAI,IAAI,GAAG,EAAE,CAAC,CAAC,CAAC,CAAC;AACjE,CAAC;AAED,cAAc;AACd,SAAS,qBAAqB,CAAC,MAAe,EAAE,eAAe,IAAI,GAAG,EAAoB;IAEtF,KAAK,IAAI,CAAC,GAAG,CAAC,CAAC,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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/src/Arrow.dom.ts b/igv_component/node_modules/apache-arrow/src/Arrow.dom.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2fdef60c1fb55f948ddfe41c1d62757322118eed
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/Arrow.dom.ts
@@ -0,0 +1,98 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import streamAdapters from './io/adapters.js';
+import { Builder } from './builder.js';
+import { RecordBatchReader, RecordBatchFileReader, RecordBatchStreamReader, } from './ipc/reader.js';
+import { RecordBatchWriter, RecordBatchFileWriter, RecordBatchStreamWriter, } from './ipc/writer.js';
+import { toDOMStream } from './io/whatwg/iterable.js';
+import { builderThroughDOMStream } from './io/whatwg/builder.js';
+import { recordBatchReaderThroughDOMStream } from './io/whatwg/reader.js';
+import { recordBatchWriterThroughDOMStream } from './io/whatwg/writer.js';
+
+streamAdapters.toDOMStream = toDOMStream;
+Builder['throughDOM'] = builderThroughDOMStream;
+RecordBatchReader['throughDOM'] = recordBatchReaderThroughDOMStream;
+RecordBatchFileReader['throughDOM'] = recordBatchReaderThroughDOMStream;
+RecordBatchStreamReader['throughDOM'] = recordBatchReaderThroughDOMStream;
+RecordBatchWriter['throughDOM'] = recordBatchWriterThroughDOMStream;
+RecordBatchFileWriter['throughDOM'] = recordBatchWriterThroughDOMStream;
+RecordBatchStreamWriter['throughDOM'] = recordBatchWriterThroughDOMStream;
+
+export type {
+    TypeMap, StructRowProxy,
+    ReadableSource, WritableSink,
+    ArrowJSONLike, FileHandle, Readable, Writable, ReadableWritable, ReadableDOMStreamOptions,
+} from './Arrow.js';
+
+export {
+    DateUnit, IntervalUnit, MessageHeader, MetadataVersion, Precision, TimeUnit, Type, UnionMode, BufferType,
+    Data, makeData,
+    DataType,
+    Null,
+    Bool,
+    Int, Int8, Int16, Int32, Int64, Uint8, Uint16, Uint32, Uint64,
+    Float, Float16, Float32, Float64,
+    Utf8,
+    Binary,
+    FixedSizeBinary,
+    Date_, DateDay, DateMillisecond,
+    Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond,
+    Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond,
+    Decimal,
+    List,
+    Struct, StructRow,
+    Union, DenseUnion, SparseUnion,
+    Dictionary,
+    Interval, IntervalDayTime, IntervalYearMonth,
+    FixedSizeList,
+    Map_, MapRow,
+    Table, makeTable, tableFromArrays,
+    Schema, Field,
+    Visitor,
+    Vector, makeVector, vectorFromArray, tableFromJSON,
+    ByteStream, AsyncByteStream, AsyncByteQueue,
+    RecordBatchReader, RecordBatchFileReader, RecordBatchStreamReader, AsyncRecordBatchFileReader, AsyncRecordBatchStreamReader,
+    RecordBatchWriter, RecordBatchFileWriter, RecordBatchStreamWriter, RecordBatchJSONWriter,
+    tableFromIPC, tableToIPC,
+    MessageReader, AsyncMessageReader, JSONMessageReader,
+    Message,
+    RecordBatch,
+    util,
+    Builder, makeBuilder, builderThroughIterable, builderThroughAsyncIterable,
+} from './Arrow.js';
+
+export {
+    BinaryBuilder,
+    BoolBuilder,
+    DateBuilder, DateDayBuilder, DateMillisecondBuilder,
+    DecimalBuilder,
+    DictionaryBuilder,
+    FixedSizeBinaryBuilder,
+    FixedSizeListBuilder,
+    FloatBuilder, Float16Builder, Float32Builder, Float64Builder,
+    IntervalBuilder, IntervalDayTimeBuilder, IntervalYearMonthBuilder,
+    IntBuilder, Int8Builder, Int16Builder, Int32Builder, Int64Builder, Uint8Builder, Uint16Builder, Uint32Builder, Uint64Builder,
+    ListBuilder,
+    MapBuilder,
+    NullBuilder,
+    StructBuilder,
+    TimestampBuilder, TimestampSecondBuilder, TimestampMillisecondBuilder, TimestampMicrosecondBuilder, TimestampNanosecondBuilder,
+    TimeBuilder, TimeSecondBuilder, TimeMillisecondBuilder, TimeMicrosecondBuilder, TimeNanosecondBuilder,
+    UnionBuilder, DenseUnionBuilder, SparseUnionBuilder,
+    Utf8Builder,
+} from './Arrow.js';
diff --git a/igv_component/node_modules/apache-arrow/src/Arrow.node.ts b/igv_component/node_modules/apache-arrow/src/Arrow.node.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d47f0880ff48b5816386641603e7cd0ee4fe0c84
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/Arrow.node.ts
@@ -0,0 +1,32 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import streamAdapters from './io/adapters.js';
+import { Builder } from './builder.js';
+import { RecordBatchReader } from './ipc/reader.js';
+import { RecordBatchWriter } from './ipc/writer.js';
+import { toNodeStream } from './io/node/iterable.js';
+import { builderThroughNodeStream } from './io/node/builder.js';
+import { recordBatchReaderThroughNodeStream } from './io/node/reader.js';
+import { recordBatchWriterThroughNodeStream } from './io/node/writer.js';
+
+streamAdapters.toNodeStream = toNodeStream;
+Builder['throughNode'] = builderThroughNodeStream;
+RecordBatchReader['throughNode'] = recordBatchReaderThroughNodeStream;
+RecordBatchWriter['throughNode'] = recordBatchWriterThroughNodeStream;
+
+export * from './Arrow.dom.js';
diff --git a/igv_component/node_modules/apache-arrow/src/Arrow.ts b/igv_component/node_modules/apache-arrow/src/Arrow.ts
new file mode 100644
index 0000000000000000000000000000000000000000..dc44e10b9206f8496fce56b05fc3fa981f1c603e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/Arrow.ts
@@ -0,0 +1,115 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+export { MessageHeader } from './fb/message-header.js';
+
+export {
+    Type,
+    BufferType,
+    DateUnit,
+    TimeUnit,
+    Precision,
+    UnionMode,
+    IntervalUnit,
+    MetadataVersion,
+} from './enum.js';
+
+export { Data, makeData } from './data.js';
+export type { TypeMap } from './type.js';
+export {
+    DataType,
+    Null,
+    Bool,
+    Int, Int8, Int16, Int32, Int64, Uint8, Uint16, Uint32, Uint64,
+    Float, Float16, Float32, Float64,
+    Utf8,
+    Binary,
+    FixedSizeBinary,
+    Date_, DateDay, DateMillisecond,
+    Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond,
+    Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond,
+    Decimal,
+    List,
+    Struct,
+    Union, DenseUnion, SparseUnion,
+    Dictionary,
+    Interval, IntervalDayTime, IntervalYearMonth,
+    FixedSizeList,
+    Map_
+} from './type.js';
+
+export { Table, makeTable, tableFromArrays } from './table.js';
+export { Vector, makeVector } from './vector.js';
+export { Visitor } from './visitor.js';
+export { Schema, Field } from './schema.js';
+
+export { MapRow } from './row/map.js';
+export { StructRow } from './row/struct.js';
+export type { StructRowProxy } from './row/struct.js';
+
+export { Builder } from './builder.js';
+export { makeBuilder, vectorFromArray, tableFromJSON, builderThroughIterable, builderThroughAsyncIterable } from './factories.js';
+export type { BuilderOptions } from './builder.js';
+export { BoolBuilder } from './builder/bool.js';
+export { NullBuilder } from './builder/null.js';
+export { DateBuilder, DateDayBuilder, DateMillisecondBuilder } from './builder/date.js';
+export { DecimalBuilder } from './builder/decimal.js';
+export { DictionaryBuilder } from './builder/dictionary.js';
+export { FixedSizeBinaryBuilder } from './builder/fixedsizebinary.js';
+export { FloatBuilder, Float16Builder, Float32Builder, Float64Builder } from './builder/float.js';
+export { IntBuilder, Int8Builder, Int16Builder, Int32Builder, Int64Builder, Uint8Builder, Uint16Builder, Uint32Builder, Uint64Builder } from './builder/int.js';
+export { TimeBuilder, TimeSecondBuilder, TimeMillisecondBuilder, TimeMicrosecondBuilder, TimeNanosecondBuilder } from './builder/time.js';
+export { TimestampBuilder, TimestampSecondBuilder, TimestampMillisecondBuilder, TimestampMicrosecondBuilder, TimestampNanosecondBuilder } from './builder/timestamp.js';
+export { IntervalBuilder, IntervalDayTimeBuilder, IntervalYearMonthBuilder } from './builder/interval.js';
+export { Utf8Builder } from './builder/utf8.js';
+export { BinaryBuilder } from './builder/binary.js';
+export { ListBuilder } from './builder/list.js';
+export { FixedSizeListBuilder } from './builder/fixedsizelist.js';
+export { MapBuilder } from './builder/map.js';
+export { StructBuilder } from './builder/struct.js';
+export { UnionBuilder, SparseUnionBuilder, DenseUnionBuilder } from './builder/union.js';
+
+export { ByteStream, AsyncByteStream, AsyncByteQueue } from './io/stream.js';
+export type { ReadableSource, WritableSink } from './io/stream.js';
+export { RecordBatchReader, RecordBatchFileReader, RecordBatchStreamReader, AsyncRecordBatchFileReader, AsyncRecordBatchStreamReader } from './ipc/reader.js';
+export { RecordBatchWriter, RecordBatchFileWriter, RecordBatchStreamWriter, RecordBatchJSONWriter } from './ipc/writer.js';
+export { tableToIPC, tableFromIPC } from './ipc/serialization.js';
+export { MessageReader, AsyncMessageReader, JSONMessageReader } from './ipc/message.js';
+export { Message } from './ipc/metadata/message.js';
+export { RecordBatch } from './recordbatch.js';
+export type { ArrowJSONLike, FileHandle, Readable, Writable, ReadableWritable, ReadableDOMStreamOptions } from './io/interfaces.js';
+
+import * as util_bn_ from './util/bn.js';
+import * as util_int_ from './util/int.js';
+import * as util_bit_ from './util/bit.js';
+import * as util_math_ from './util/math.js';
+import * as util_buffer_ from './util/buffer.js';
+import * as util_vector_ from './util/vector.js';
+import { compareSchemas, compareFields, compareTypes } from './visitor/typecomparator.js';
+
+/** @ignore */
+export const util = {
+    ...util_bn_,
+    ...util_int_,
+    ...util_bit_,
+    ...util_math_,
+    ...util_buffer_,
+    ...util_vector_,
+    compareSchemas,
+    compareFields,
+    compareTypes,
+};
diff --git a/igv_component/node_modules/apache-arrow/src/bin/arrow2csv.ts b/igv_component/node_modules/apache-arrow/src/bin/arrow2csv.ts
new file mode 100644
index 0000000000000000000000000000000000000000..eae7f5805c41c626fd3602f695799ca85c800349
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/bin/arrow2csv.ts
@@ -0,0 +1,338 @@
+#! /usr/bin/env node
+
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+/* eslint-disable unicorn/no-array-for-each */
+
+import * as fs from 'fs';
+import * as stream from 'stream';
+import { valueToString } from '../util/pretty.js';
+import { Schema, RecordBatch, RecordBatchReader, AsyncByteQueue } from '../Arrow.node.js';
+
+import commandLineUsage from 'command-line-usage';
+import commandLineArgs from 'command-line-args';
+import padLeft from 'pad-left';
+// @ts-ignore
+import { parse as bignumJSONParse } from 'json-bignum';
+
+const argv = commandLineArgs(cliOpts(), { partial: true });
+const files = argv.help ? [] : [...(argv.file || []), ...(argv._unknown || [])].filter(Boolean);
+
+const state = { ...argv, closed: false, maxColWidths: [10] };
+
+type ToStringState = {
+    hr?: string;
+    sep?: string;
+    schema?: any;
+    closed?: boolean;
+    metadata?: boolean;
+    maxColWidths: number[];
+};
+
+(async () => {
+
+    const sources = argv.help ? [] : [
+        ...files.map((file) => () => fs.createReadStream(file)),
+        ...(process.stdin.isTTY ? [] : [() => process.stdin])
+    ].filter(Boolean) as (() => NodeJS.ReadableStream)[];
+
+    let reader: RecordBatchReader | null;
+    let hasReaders = false;
+
+    for (const source of sources) {
+        if (state.closed) { break; }
+        for await (reader of recordBatchReaders(source)) {
+            hasReaders = true;
+            const transformToString = batchesToString(state, reader.schema);
+            await pipeTo(
+                reader.pipe(transformToString),
+                process.stdout, { end: false }
+            ).catch(() => state.closed = true); // Handle EPIPE errors
+        }
+        if (state.closed) { break; }
+    }
+
+    return hasReaders ? 0 : print_usage();
+})()
+    .then((x) => +x || 0, (err) => {
+        if (err) {
+            console.error(`${err?.stack || err}`);
+        }
+        return process.exitCode || 1;
+    }).then((code) => process.exit(code));
+
+function pipeTo(source: NodeJS.ReadableStream, sink: NodeJS.WritableStream, opts?: { end: boolean }) {
+    return new Promise((resolve, reject) => {
+
+        source.on('end', onEnd).pipe(sink, opts).on('error', onErr);
+
+        function onEnd() { done(undefined, resolve); }
+        function onErr(err: any) { done(err, reject); }
+        function done(e: any, cb: (e?: any) => void) {
+            source.removeListener('end', onEnd);
+            sink.removeListener('error', onErr);
+            cb(e);
+        }
+    });
+}
+
+async function* recordBatchReaders(createSourceStream: () => NodeJS.ReadableStream): AsyncGenerator<RecordBatchReader, void, void> {
+
+    const json = new AsyncByteQueue();
+    const stream = new AsyncByteQueue();
+    const source = createSourceStream();
+    let reader: RecordBatchReader | null = null;
+    let readers: AsyncIterable<RecordBatchReader> | null = null;
+    // tee the input source, just in case it's JSON
+    source.on('end', () => [stream, json].forEach((y) => y.close()))
+        .on('data', (x) => [stream, json].forEach((y) => y.write(x)))
+        .on('error', (e) => [stream, json].forEach((y) => y.abort(e)));
+
+    try {
+        for await (reader of RecordBatchReader.readAll(stream)) {
+            reader && (yield reader);
+        }
+        if (reader) return;
+    } catch { readers = null; }
+
+    if (!readers) {
+        await json.closed;
+        if (source instanceof fs.ReadStream) { source.close(); }
+        // If the data in the `json` ByteQueue parses to JSON, then assume it's Arrow JSON from a file or stdin
+        try {
+            for await (reader of RecordBatchReader.readAll(bignumJSONParse(await json.toString()))) {
+                reader && (yield reader);
+            }
+        } catch { readers = null; }
+    }
+}
+
+function batchesToString(state: ToStringState, schema: Schema) {
+
+    let rowId = 0;
+    let batchId = -1;
+    let maxColWidths = [10];
+    const { hr, sep, metadata } = state;
+
+    const header = ['row_id', ...schema.fields.map((f) => `${f}`)].map(val => valueToString(val));
+
+    state.maxColWidths = header.map((x, i) => Math.max(maxColWidths[i] || 0, x.length));
+
+    return new stream.Transform({
+        encoding: 'utf8',
+        writableObjectMode: true,
+        readableObjectMode: false,
+        final(cb: (error?: Error | null) => void) {
+            // if there were no batches, then print the Schema, and metadata
+            if (batchId === -1) {
+                hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n\n`);
+                this.push(`${formatRow(header, maxColWidths, sep)}\n`);
+                if (metadata && schema.metadata.size > 0) {
+                    this.push(`metadata:\n${formatMetadata(schema.metadata)}\n`);
+                }
+            }
+            hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n\n`);
+            cb();
+        },
+        transform(batch: RecordBatch, _enc: string, cb: (error?: Error, data?: any) => void) {
+
+            batch = !state.schema?.length ? batch : batch.select(state.schema);
+
+            if (state.closed) { return cb(undefined, null); }
+
+            // Pass one to convert to strings and count max column widths
+            state.maxColWidths = measureColumnWidths(rowId, batch, header.map((x, i) => Math.max(maxColWidths[i] || 0, x.length)));
+
+            // If this is the first batch in a stream, print a top horizontal rule, schema metadata, and
+            if (++batchId === 0) {
+                hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n`);
+                if (metadata && batch.schema.metadata.size > 0) {
+                    this.push(`metadata:\n${formatMetadata(batch.schema.metadata)}\n`);
+                    hr && this.push(`${horizontalRule(state.maxColWidths, hr, sep)}\n`);
+                }
+                if (batch.numRows <= 0 || batch.numCols <= 0) {
+                    this.push(`${formatRow(header, maxColWidths = state.maxColWidths, sep)}\n`);
+                }
+            }
+
+            if (batch.numRows > 0 && batch.numCols > 0) {
+                // If any of the column widths changed, print the header again
+                if (rowId % 350 !== 0 && JSON.stringify(state.maxColWidths) !== JSON.stringify(maxColWidths)) {
+                    this.push(`${formatRow(header, state.maxColWidths, sep)}\n`);
+                }
+                maxColWidths = state.maxColWidths;
+                for (const row of batch) {
+                    if (state.closed) { break; } else if (!row) { continue; }
+                    if (rowId % 350 === 0) {
+                        this.push(`${formatRow(header, maxColWidths, sep)}\n`);
+                    }
+                    this.push(`${formatRow([rowId++, ...row.toArray()].map(v => valueToString(v)), maxColWidths, sep)}\n`);
+                }
+            }
+            cb();
+        }
+    });
+}
+
+function horizontalRule(maxColWidths: number[], hr = '', sep = ' | ') {
+    return ` ${padLeft('', maxColWidths.reduce((x, y) => x + y, -2 + maxColWidths.length * sep.length), hr)}`;
+}
+
+function formatRow(row: string[] = [], maxColWidths: number[] = [], sep = ' | ') {
+    return `${row.map((x, j) => padLeft(x, maxColWidths[j])).join(sep)}`;
+}
+
+function formatMetadataValue(value = '') {
+    let parsed = value;
+    try {
+        parsed = JSON.stringify(JSON.parse(value), null, 2);
+    } catch { parsed = value; }
+    return valueToString(parsed).split('\n').join('\n  ');
+}
+
+function formatMetadata(metadata: Map<string, string>) {
+
+    return [...metadata].map(([key, val]) =>
+        `  ${key}: ${formatMetadataValue(val)}`
+    ).join(',  \n');
+}
+
+function measureColumnWidths(rowId: number, batch: RecordBatch, maxColWidths: number[] = []) {
+    let val: any, j = 0;
+    for (const row of batch) {
+        if (!row) { continue; }
+        maxColWidths[j = 0] = Math.max(maxColWidths[0] || 0, (`${rowId++}`).length);
+        for (val of row) {
+            if (val && typedArrayElementWidths.has(val.constructor) && (typeof val[Symbol.toPrimitive] !== 'function')) {
+                // If we're printing a column of TypedArrays, ensure the column is wide enough to accommodate
+                // the widest possible element for a given byte size, since JS omits leading zeroes. For example:
+                // 1 |  [1137743649,2170567488,244696391,2122556476]
+                // 2 |                                          null
+                // 3 |   [637174007,2142281880,961736230,2912449282]
+                // 4 |    [1035112265,21832886,412842672,2207710517]
+                // 5 |                                          null
+                // 6 |                                          null
+                // 7 |     [2755142991,4192423256,2994359,467878370]
+                const elementWidth = typedArrayElementWidths.get(val.constructor)!;
+
+                maxColWidths[j + 1] = Math.max(maxColWidths[j + 1] || 0,
+                    2 + // brackets on each end
+                    (val.length - 1) + // commas between elements
+                    (val.length * elementWidth) // width of stringified 2^N-1
+                );
+            } else {
+                maxColWidths[j + 1] = Math.max(maxColWidths[j + 1] || 0, valueToString(val).length);
+            }
+            ++j;
+        }
+    }
+    return maxColWidths;
+}
+
+// Measure the stringified representation of 2^N-1 for each TypedArray variant
+const typedArrayElementWidths = (() => {
+    const maxElementWidth = (ArrayType: any) => {
+        const octets = Array.from({ length: ArrayType.BYTES_PER_ELEMENT - 1 }, _ => 255);
+        return `${new ArrayType(new Uint8Array([...octets, 254]).buffer)[0]}`.length;
+    };
+    return new Map<any, number>([
+        [Int8Array, maxElementWidth(Int8Array)],
+        [Int16Array, maxElementWidth(Int16Array)],
+        [Int32Array, maxElementWidth(Int32Array)],
+        [Uint8Array, maxElementWidth(Uint8Array)],
+        [Uint16Array, maxElementWidth(Uint16Array)],
+        [Uint32Array, maxElementWidth(Uint32Array)],
+        [Float32Array, maxElementWidth(Float32Array)],
+        [Float64Array, maxElementWidth(Float64Array)],
+        [Uint8ClampedArray, maxElementWidth(Uint8ClampedArray)]
+    ]);
+})();
+
+function cliOpts() {
+    return [
+        {
+            type: String,
+            name: 'schema', alias: 's',
+            optional: true, multiple: true,
+            typeLabel: '{underline columns}',
+            description: 'A space-delimited list of column names'
+        },
+        {
+            type: String,
+            name: 'file', alias: 'f',
+            optional: true, multiple: true,
+            description: 'The Arrow file to read'
+        },
+        {
+            type: String,
+            name: 'sep', optional: true, default: ' | ',
+            description: 'The column separator character (default: " | ")'
+        },
+        {
+            type: String,
+            name: 'hr', optional: true, default: '',
+            description: 'The horizontal border character (default: "")'
+        },
+        {
+            type: Boolean,
+            name: 'metadata', alias: 'm',
+            optional: true, default: false,
+            description: 'Flag to print Schema metadata (default: false)'
+        },
+        {
+            type: Boolean,
+            name: 'help', optional: true, default: false,
+            description: 'Print this usage guide.'
+        }
+    ];
+}
+
+function print_usage() {
+    console.log(commandLineUsage([
+        {
+            header: 'arrow2csv',
+            content: 'Print a CSV from an Arrow file'
+        },
+        {
+            header: 'Synopsis',
+            content: [
+                '$ arrow2csv {underline file.arrow} [{bold --schema} column_name ...]',
+                '$ arrow2csv [{bold --schema} column_name ...] [{bold --file} {underline file.arrow}]',
+                '$ arrow2csv {bold -s} column_1 {bold -s} column_2 [{bold -f} {underline file.arrow}]',
+                '$ arrow2csv [{bold --help}]'
+            ]
+        },
+        {
+            header: 'Options',
+            optionList: cliOpts()
+        },
+        {
+            header: 'Example',
+            content: [
+                '$ arrow2csv --schema foo baz --sep " , " -f simple.arrow',
+                '>   "row_id", "foo: Int32", "baz: Utf8"',
+                '>          0,            1,        "aa"',
+                '>          1,         null,        null',
+                '>          2,            3,        null',
+                '>          3,            4,       "bbb"',
+                '>          4,            5,      "cccc"',
+            ]
+        }
+    ]));
+    return 1;
+}
diff --git a/igv_component/node_modules/apache-arrow/src/builder.ts b/igv_component/node_modules/apache-arrow/src/builder.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6f84154935f7b83098dca8492db9f86fd7d5c57c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder.ts
@@ -0,0 +1,404 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Vector } from './vector.js';
+import { Data, makeData } from './data.js';
+import { MapRow, kKeys } from './row/map.js';
+import {
+    DataType, strideForType,
+    Float, Int, Decimal, FixedSizeBinary,
+    Date_, Time, Timestamp, Interval,
+    Utf8, Binary, List, Map_,
+} from './type.js';
+import { createIsValidFunction } from './builder/valid.js';
+import { BufferBuilder, BitmapBufferBuilder, DataBufferBuilder, OffsetsBufferBuilder } from './builder/buffer.js';
+
+/**
+ * A set of options required to create a `Builder` instance for a given `DataType`.
+ * @see {@link Builder}
+ */
+export interface BuilderOptions<T extends DataType = any, TNull = any> {
+    type: T;
+    nullValues?: TNull[] | ReadonlyArray<TNull> | null;
+    children?: { [key: string]: BuilderOptions } | BuilderOptions[];
+}
+
+/**
+ * An abstract base class for types that construct Arrow Vectors from arbitrary JavaScript values.
+ *
+ * A `Builder` is responsible for writing arbitrary JavaScript values
+ * to ArrayBuffers and/or child Builders according to the Arrow specification
+ * for each DataType, creating or resizing the underlying ArrayBuffers as necessary.
+ *
+ * The `Builder` for each Arrow `DataType` handles converting and appending
+ * values for a given `DataType`. The high-level {@link makeBuilder `makeBuilder()`} convenience
+ * method creates the specific `Builder` subclass for the supplied `DataType`.
+ *
+ * Once created, `Builder` instances support both appending values to the end
+ * of the `Builder`, and random-access writes to specific indices
+ * (`Builder.prototype.append(value)` is a convenience method for
+ * `builder.set(builder.length, value)`). Appending or setting values beyond the
+ * Builder's current length may cause the builder to grow its underlying buffers
+ * or child Builders (if applicable) to accommodate the new values.
+ *
+ * After enough values have been written to a `Builder`, `Builder.prototype.flush()`
+ * will commit the values to the underlying ArrayBuffers (or child Builders). The
+ * internal Builder state will be reset, and an instance of `Data<T>` is returned.
+ * Alternatively, `Builder.prototype.toVector()` will flush the `Builder` and return
+ * an instance of `Vector<T>` instead.
+ *
+ * When there are no more values to write, use `Builder.prototype.finish()` to
+ * finalize the `Builder`. This does not reset the internal state, so it is
+ * necessary to call `Builder.prototype.flush()` or `toVector()` one last time
+ * if there are still values queued to be flushed.
+ *
+ * Note: calling `Builder.prototype.finish()` is required when using a `DictionaryBuilder`,
+ * because this is when it flushes the values that have been enqueued in its internal
+ * dictionary's `Builder`, and creates the `dictionaryVector` for the `Dictionary` `DataType`.
+ *
+ * @example
+ * ```ts
+ * import { Builder, Utf8 } from 'apache-arrow';
+ *
+ * const utf8Builder = makeBuilder({
+ *     type: new Utf8(),
+ *     nullValues: [null, 'n/a']
+ * });
+ *
+ * utf8Builder
+ *     .append('hello')
+ *     .append('n/a')
+ *     .append('world')
+ *     .append(null);
+ *
+ * const utf8Vector = utf8Builder.finish().toVector();
+ *
+ * console.log(utf8Vector.toJSON());
+ * // > ["hello", null, "world", null]
+ * ```
+ *
+ * @typeparam T The `DataType` of this `Builder`.
+ * @typeparam TNull The type(s) of values which will be considered null-value sentinels.
+ */
+export abstract class Builder<T extends DataType = any, TNull = any> {
+
+    /** @nocollapse */
+    // @ts-ignore
+    public static throughNode<T extends DataType = any, TNull = any>(options: import('./io/node/builder').BuilderDuplexOptions<T, TNull>): import('stream').Duplex {
+        throw new Error(`"throughNode" not available in this environment`);
+    }
+    /** @nocollapse */
+    // @ts-ignore
+    public static throughDOM<T extends DataType = any, TNull = any>(options: import('./io/whatwg/builder').BuilderTransformOptions<T, TNull>): import('./io/whatwg/builder').BuilderTransform<T, TNull> {
+        throw new Error(`"throughDOM" not available in this environment`);
+    }
+
+    /**
+     * Construct a builder with the given Arrow DataType with optional null values,
+     * which will be interpreted as "null" when set or appended to the `Builder`.
+     * @param {{ type: T, nullValues?: any[] }} options A `BuilderOptions` object used to create this `Builder`.
+     */
+    constructor({ 'type': type, 'nullValues': nulls }: BuilderOptions<T, TNull>) {
+        this.type = type;
+        this.children = [];
+        this.nullValues = nulls;
+        this.stride = strideForType(type);
+        this._nulls = new BitmapBufferBuilder();
+        if (nulls && nulls.length > 0) {
+            this._isValid = createIsValidFunction(nulls);
+        }
+    }
+
+    /**
+     * The Builder's `DataType` instance.
+     * @readonly
+     */
+    public type: T;
+    /**
+     * The number of values written to the `Builder` that haven't been flushed yet.
+     * @readonly
+     */
+    public length = 0;
+    /**
+     * A boolean indicating whether `Builder.prototype.finish()` has been called on this `Builder`.
+     * @readonly
+     */
+    public finished = false;
+    /**
+     * The number of elements in the underlying values TypedArray that
+     * represent a single logical element, determined by this Builder's
+     * `DataType`. This is 1 for most types, but is larger when the `DataType`
+     * is `Int64`, `Uint64`, `Decimal`, `DateMillisecond`, certain variants of
+     * `Interval`, `Time`, or `Timestamp`, `FixedSizeBinary`, and `FixedSizeList`.
+     * @readonly
+     */
+    public readonly stride: number;
+    public readonly children: Builder[];
+    /**
+     * The list of null-value sentinels for this `Builder`. When one of these values
+     * is written to the `Builder` (either via `Builder.prototype.set()` or `Builder.prototype.append()`),
+     * a 1-bit is written to this Builder's underlying null BitmapBufferBuilder.
+     * @readonly
+     */
+    public readonly nullValues?: TNull[] | ReadonlyArray<TNull> | null;
+
+    /**
+     * Flush the `Builder` and return a `Vector<T>`.
+     * @returns {Vector<T>} A `Vector<T>` of the flushed values.
+     */
+    public toVector() { return new Vector([this.flush()]); }
+
+    public get ArrayType() { return this.type.ArrayType; }
+    public get nullCount() { return this._nulls.numInvalid; }
+    public get numChildren() { return this.children.length; }
+
+    /**
+     * @returns The aggregate length (in bytes) of the values that have been written.
+     */
+    public get byteLength(): number {
+        let size = 0;
+        const { _offsets, _values, _nulls, _typeIds, children } = this;
+        _offsets && (size += _offsets.byteLength);
+        _values && (size += _values.byteLength);
+        _nulls && (size += _nulls.byteLength);
+        _typeIds && (size += _typeIds.byteLength);
+        return children.reduce((size, child) => size + child.byteLength, size);
+    }
+
+    /**
+     * @returns The aggregate number of rows that have been reserved to write new values.
+     */
+    public get reservedLength(): number {
+        return this._nulls.reservedLength;
+    }
+
+    /**
+     * @returns The aggregate length (in bytes) that has been reserved to write new values.
+     */
+    public get reservedByteLength(): number {
+        let size = 0;
+        this._offsets && (size += this._offsets.reservedByteLength);
+        this._values && (size += this._values.reservedByteLength);
+        this._nulls && (size += this._nulls.reservedByteLength);
+        this._typeIds && (size += this._typeIds.reservedByteLength);
+        return this.children.reduce((size, child) => size + child.reservedByteLength, size);
+    }
+
+    declare protected _offsets: DataBufferBuilder<Int32Array>;
+    public get valueOffsets() { return this._offsets ? this._offsets.buffer : null; }
+
+    declare protected _values: BufferBuilder<T['TArray'], any>;
+    public get values() { return this._values ? this._values.buffer : null; }
+
+    declare protected _nulls: BitmapBufferBuilder;
+    public get nullBitmap() { return this._nulls ? this._nulls.buffer : null; }
+
+    declare protected _typeIds: DataBufferBuilder<Int8Array>;
+    public get typeIds() { return this._typeIds ? this._typeIds.buffer : null; }
+
+    declare protected _isValid: (value: T['TValue'] | TNull) => boolean;
+    declare protected _setValue: (inst: Builder<T>, index: number, value: T['TValue']) => void;
+
+    /**
+     * Appends a value (or null) to this `Builder`.
+     * This is equivalent to `builder.set(builder.length, value)`.
+     * @param {T['TValue'] | TNull } value The value to append.
+     */
+    public append(value: T['TValue'] | TNull) { return this.set(this.length, value); }
+
+    /**
+     * Validates whether a value is valid (true), or null (false)
+     * @param {T['TValue'] | TNull } value The value to compare against null the value representations
+     */
+    public isValid(value: T['TValue'] | TNull): boolean { return this._isValid(value); }
+
+    /**
+     * Write a value (or null-value sentinel) at the supplied index.
+     * If the value matches one of the null-value representations, a 1-bit is
+     * written to the null `BitmapBufferBuilder`. Otherwise, a 0 is written to
+     * the null `BitmapBufferBuilder`, and the value is passed to
+     * `Builder.prototype.setValue()`.
+     * @param {number} index The index of the value to write.
+     * @param {T['TValue'] | TNull } value The value to write at the supplied index.
+     * @returns {this} The updated `Builder` instance.
+     */
+    public set(index: number, value: T['TValue'] | TNull) {
+        if (this.setValid(index, this.isValid(value))) {
+            this.setValue(index, value);
+        }
+        return this;
+    }
+
+    /**
+     * Write a value to the underlying buffers at the supplied index, bypassing
+     * the null-value check. This is a low-level method that
+     * @param {number} index
+     * @param {T['TValue'] | TNull } value
+     */
+    public setValue(index: number, value: T['TValue']) { this._setValue(this, index, value); }
+    public setValid(index: number, valid: boolean) {
+        this.length = this._nulls.set(index, +valid).length;
+        return valid;
+    }
+
+    // @ts-ignore
+    public addChild(child: Builder, name = `${this.numChildren}`) {
+        throw new Error(`Cannot append children to non-nested type "${this.type}"`);
+    }
+
+    /**
+     * Retrieve the child `Builder` at the supplied `index`, or null if no child
+     * exists at that index.
+     * @param {number} index The index of the child `Builder` to retrieve.
+     * @returns {Builder | null} The child Builder at the supplied index or null.
+     */
+    public getChildAt<R extends DataType = any>(index: number): Builder<R> | null {
+        return this.children[index] || null;
+    }
+
+    /**
+     * Commit all the values that have been written to their underlying
+     * ArrayBuffers, including any child Builders if applicable, and reset
+     * the internal `Builder` state.
+     * @returns A `Data<T>` of the buffers and children representing the values written.
+     */
+    public flush(): Data<T> {
+
+        let data;
+        let typeIds;
+        let nullBitmap;
+        let valueOffsets;
+        const { type, length, nullCount, _typeIds, _offsets, _values, _nulls } = this;
+
+        if (typeIds = _typeIds?.flush(length)) { // Unions
+            // DenseUnions
+            valueOffsets = _offsets?.flush(length);
+        } else if (valueOffsets = _offsets?.flush(length)) { // Variable-width primitives (Binary, Utf8), and Lists
+            // Binary, Utf8
+            data = _values?.flush(_offsets.last());
+        } else { // Fixed-width primitives (Int, Float, Decimal, Time, Timestamp, and Interval)
+            data = _values?.flush(length);
+        }
+
+        if (nullCount > 0) {
+            nullBitmap = _nulls?.flush(length);
+        }
+
+        const children = this.children.map((child) => child.flush());
+
+        this.clear();
+
+        return makeData(<any>{
+            type, length, nullCount,
+            children, 'child': children[0],
+            data, typeIds, nullBitmap, valueOffsets,
+        }) as Data<T>;
+    }
+
+    /**
+     * Finalize this `Builder`, and child builders if applicable.
+     * @returns {this} The finalized `Builder` instance.
+     */
+    public finish() {
+        this.finished = true;
+        for (const child of this.children) child.finish();
+        return this;
+    }
+
+    /**
+     * Clear this Builder's internal state, including child Builders if applicable, and reset the length to 0.
+     * @returns {this} The cleared `Builder` instance.
+     */
+    public clear() {
+        this.length = 0;
+        this._nulls?.clear();
+        this._values?.clear();
+        this._offsets?.clear();
+        this._typeIds?.clear();
+        for (const child of this.children) child.clear();
+        return this;
+    }
+}
+
+(Builder.prototype as any).length = 1;
+(Builder.prototype as any).stride = 1;
+(Builder.prototype as any).children = null;
+(Builder.prototype as any).finished = false;
+(Builder.prototype as any).nullValues = null;
+(Builder.prototype as any)._isValid = () => true;
+
+/** @ignore */
+export abstract class FixedWidthBuilder<T extends Int | Float | FixedSizeBinary | Date_ | Timestamp | Time | Decimal | Interval = any, TNull = any> extends Builder<T, TNull> {
+    constructor(opts: BuilderOptions<T, TNull>) {
+        super(opts);
+        this._values = new DataBufferBuilder(new this.ArrayType(0), this.stride);
+    }
+    public setValue(index: number, value: T['TValue']) {
+        const values = this._values;
+        values.reserve(index - values.length + 1);
+        return super.setValue(index, value);
+    }
+}
+
+/** @ignore */
+export abstract class VariableWidthBuilder<T extends Binary | Utf8 | List | Map_, TNull = any> extends Builder<T, TNull> {
+    protected _pendingLength = 0;
+    protected _offsets: OffsetsBufferBuilder;
+    protected _pending: Map<number, any> | undefined;
+    constructor(opts: BuilderOptions<T, TNull>) {
+        super(opts);
+        this._offsets = new OffsetsBufferBuilder();
+    }
+    public setValue(index: number, value: T['TValue']) {
+        const pending = this._pending || (this._pending = new Map());
+        const current = pending.get(index);
+        current && (this._pendingLength -= current.length);
+        this._pendingLength += (value instanceof MapRow) ? value[kKeys].length : value.length;
+        pending.set(index, value);
+    }
+    public setValid(index: number, isValid: boolean) {
+        if (!super.setValid(index, isValid)) {
+            (this._pending || (this._pending = new Map())).set(index, undefined);
+            return false;
+        }
+        return true;
+    }
+    public clear() {
+        this._pendingLength = 0;
+        this._pending = undefined;
+        return super.clear();
+    }
+    public flush() {
+        this._flush();
+        return super.flush();
+    }
+    public finish() {
+        this._flush();
+        return super.finish();
+    }
+    protected _flush() {
+        const pending = this._pending;
+        const pendingLength = this._pendingLength;
+        this._pendingLength = 0;
+        this._pending = undefined;
+        if (pending && pending.size > 0) {
+            this._flushPending(pending, pendingLength);
+        }
+        return this;
+    }
+    protected abstract _flushPending(pending: Map<number, any>, pendingLength: number): void;
+}
diff --git a/igv_component/node_modules/apache-arrow/src/builder/binary.ts b/igv_component/node_modules/apache-arrow/src/builder/binary.ts
new file mode 100644
index 0000000000000000000000000000000000000000..3c12ddf34abb01bcf3ddaf867e8969aaf468a6f1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/binary.ts
@@ -0,0 +1,54 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Binary } from '../type.js';
+import { toUint8Array } from '../util/buffer.js';
+import { BufferBuilder } from './buffer.js';
+import { VariableWidthBuilder, BuilderOptions } from '../builder.js';
+
+/** @ignore */
+export class BinaryBuilder<TNull = any> extends VariableWidthBuilder<Binary, TNull> {
+    constructor(opts: BuilderOptions<Binary, TNull>) {
+        super(opts);
+        this._values = new BufferBuilder(new Uint8Array(0));
+    }
+    public get byteLength(): number {
+        let size = this._pendingLength + (this.length * 4);
+        this._offsets && (size += this._offsets.byteLength);
+        this._values && (size += this._values.byteLength);
+        this._nulls && (size += this._nulls.byteLength);
+        return size;
+    }
+    public setValue(index: number, value: Uint8Array) {
+        return super.setValue(index, toUint8Array(value));
+    }
+    protected _flushPending(pending: Map<number, Uint8Array | undefined>, pendingLength: number) {
+        const offsets = this._offsets;
+        const data = this._values.reserve(pendingLength).buffer;
+        let offset = 0;
+        for (const [index, value] of pending) {
+            if (value === undefined) {
+                offsets.set(index, 0);
+            } else {
+                const length = value.length;
+                data.set(value, offset);
+                offsets.set(index, length);
+                offset += length;
+            }
+        }
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/builder/bool.ts b/igv_component/node_modules/apache-arrow/src/builder/bool.ts
new file mode 100644
index 0000000000000000000000000000000000000000..8289d0bcd6dd84e15f22a03dcbe7ff5ac0fc29f4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/bool.ts
@@ -0,0 +1,31 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Bool } from '../type.js';
+import { BitmapBufferBuilder } from './buffer.js';
+import { Builder, BuilderOptions } from '../builder.js';
+
+/** @ignore */
+export class BoolBuilder<TNull = any> extends Builder<Bool, TNull> {
+    constructor(options: BuilderOptions<Bool, TNull>) {
+        super(options);
+        this._values = new BitmapBufferBuilder();
+    }
+    public setValue(index: number, value: boolean) {
+        this._values.set(index, +value);
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/builder/buffer.ts b/igv_component/node_modules/apache-arrow/src/builder/buffer.ts
new file mode 100644
index 0000000000000000000000000000000000000000..03d4f33349a7a2174744d102dd87f2e6afb5b9a4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/buffer.ts
@@ -0,0 +1,157 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { memcpy } from '../util/buffer.js';
+import {
+    TypedArray, TypedArrayConstructor,
+    BigIntArray, BigIntArrayConstructor
+} from '../interfaces.js';
+
+/** @ignore */ type DataValue<T> = T extends TypedArray ? number : T extends BigIntArray ? WideValue<T> : T;
+/** @ignore */ type WideValue<T extends BigIntArray> = T extends BigIntArray ? bigint | Int32Array | Uint32Array : never;
+/** @ignore */ type ArrayCtor<T extends TypedArray | BigIntArray> =
+    T extends TypedArray ? TypedArrayConstructor<T> :
+    T extends BigIntArray ? BigIntArrayConstructor<T> :
+    any;
+
+/** @ignore */
+const roundLengthUpToNearest64Bytes = (len: number, BPE: number) => ((((Math.ceil(len) * BPE) + 63) & ~63) || 64) / BPE;
+/** @ignore */
+const sliceOrExtendArray = <T extends TypedArray | BigIntArray>(arr: T, len = 0) => (
+    arr.length >= len ? arr.subarray(0, len) : memcpy(new (arr.constructor as any)(len), arr, 0)
+) as T;
+
+/** @ignore */
+export interface BufferBuilder<T extends TypedArray | BigIntArray = any, TValue = DataValue<T>> {
+    readonly offset: number;
+}
+
+/** @ignore */
+export class BufferBuilder<T extends TypedArray | BigIntArray = any, TValue = DataValue<T>> {
+
+    constructor(buffer: T, stride = 1) {
+        this.buffer = buffer;
+        this.stride = stride;
+        this.BYTES_PER_ELEMENT = buffer.BYTES_PER_ELEMENT;
+        this.ArrayType = buffer.constructor as ArrayCtor<T>;
+        this._resize(this.length = Math.ceil(buffer.length / stride));
+    }
+
+    public buffer: T;
+    public length: number;
+    public readonly stride: number;
+    public readonly ArrayType: ArrayCtor<T>;
+    public readonly BYTES_PER_ELEMENT: number;
+
+    public get byteLength() {
+        return Math.ceil(this.length * this.stride) * this.BYTES_PER_ELEMENT;
+    }
+    public get reservedLength() { return this.buffer.length / this.stride; }
+    public get reservedByteLength() { return this.buffer.byteLength; }
+
+    // @ts-ignore
+    public set(index: number, value: TValue) { return this; }
+    public append(value: TValue) { return this.set(this.length, value); }
+    public reserve(extra: number) {
+        if (extra > 0) {
+            this.length += extra;
+            const stride = this.stride;
+            const length = this.length * stride;
+            const reserved = this.buffer.length;
+            if (length >= reserved) {
+                this._resize(reserved === 0
+                    ? roundLengthUpToNearest64Bytes(length * 1, this.BYTES_PER_ELEMENT)
+                    : roundLengthUpToNearest64Bytes(length * 2, this.BYTES_PER_ELEMENT)
+                );
+            }
+        }
+        return this;
+    }
+    public flush(length = this.length) {
+        length = roundLengthUpToNearest64Bytes(length * this.stride, this.BYTES_PER_ELEMENT);
+        const array = sliceOrExtendArray<T>(this.buffer, length);
+        this.clear();
+        return array;
+    }
+    public clear() {
+        this.length = 0;
+        this._resize(0);
+        return this;
+    }
+    protected _resize(newLength: number) {
+        return this.buffer = <T>memcpy(new this.ArrayType(newLength), this.buffer);
+    }
+}
+
+(BufferBuilder.prototype as any).offset = 0;
+
+/** @ignore */
+export class DataBufferBuilder<T extends TypedArray> extends BufferBuilder<T, number> {
+    public last() { return this.get(this.length - 1); }
+    public get(index: number) { return this.buffer[index]; }
+    public set(index: number, value: number) {
+        this.reserve(index - this.length + 1);
+        this.buffer[index * this.stride] = value;
+        return this;
+    }
+}
+
+/** @ignore */
+export class BitmapBufferBuilder extends DataBufferBuilder<Uint8Array> {
+
+    constructor(data = new Uint8Array(0)) { super(data, 1 / 8); }
+
+    public numValid = 0;
+    public get numInvalid() { return this.length - this.numValid; }
+    public get(idx: number) { return this.buffer[idx >> 3] >> idx % 8 & 1; }
+    public set(idx: number, val: number) {
+        const { buffer } = this.reserve(idx - this.length + 1);
+        const byte = idx >> 3, bit = idx % 8, cur = buffer[byte] >> bit & 1;
+        // If `val` is truthy and the current bit is 0, flip it to 1 and increment `numValid`.
+        // If `val` is falsey and the current bit is 1, flip it to 0 and decrement `numValid`.
+        val ? cur === 0 && ((buffer[byte] |= (1 << bit)), ++this.numValid)
+            : cur === 1 && ((buffer[byte] &= ~(1 << bit)), --this.numValid);
+        return this;
+    }
+    public clear() {
+        this.numValid = 0;
+        return super.clear();
+    }
+}
+
+/** @ignore */
+export class OffsetsBufferBuilder extends DataBufferBuilder<Int32Array> {
+    constructor(data = new Int32Array(1)) { super(data, 1); }
+    public append(value: number) {
+        return this.set(this.length - 1, value);
+    }
+    public set(index: number, value: number) {
+        const offset = this.length - 1;
+        const buffer = this.reserve(index - offset + 1).buffer;
+        if (offset < index++) {
+            buffer.fill(buffer[offset], offset, index);
+        }
+        buffer[index] = buffer[index - 1] + value;
+        return this;
+    }
+    public flush(length = this.length - 1) {
+        if (length > this.length) {
+            this.set(length - 1, 0);
+        }
+        return super.flush(length + 1);
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/builder/date.ts b/igv_component/node_modules/apache-arrow/src/builder/date.ts
new file mode 100644
index 0000000000000000000000000000000000000000..56a231c1faaad36b0893a940733ed2515c2f6aae
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/date.ts
@@ -0,0 +1,35 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { FixedWidthBuilder } from '../builder.js';
+import { Date_, DateDay, DateMillisecond } from '../type.js';
+import { setDate, setDateDay, setDateMillisecond } from '../visitor/set.js';
+
+/** @ignore */
+export class DateBuilder<T extends Date_ = Date_, TNull = any> extends FixedWidthBuilder<T, TNull> { }
+
+(DateBuilder.prototype as any)._setValue = setDate;
+
+/** @ignore */
+export class DateDayBuilder<TNull = any> extends DateBuilder<DateDay, TNull> { }
+
+(DateDayBuilder.prototype as any)._setValue = setDateDay;
+
+/** @ignore */
+export class DateMillisecondBuilder<TNull = any> extends DateBuilder<DateMillisecond, TNull> { }
+
+(DateMillisecondBuilder.prototype as any)._setValue = setDateMillisecond;
diff --git a/igv_component/node_modules/apache-arrow/src/builder/decimal.ts b/igv_component/node_modules/apache-arrow/src/builder/decimal.ts
new file mode 100644
index 0000000000000000000000000000000000000000..4554f055279e0e44c20b1c978a767dade96edae2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/decimal.ts
@@ -0,0 +1,25 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Decimal } from '../type.js';
+import { FixedWidthBuilder } from '../builder.js';
+import { setDecimal } from '../visitor/set.js';
+
+/** @ignore */
+export class DecimalBuilder<TNull = any> extends FixedWidthBuilder<Decimal, TNull> { }
+
+(DecimalBuilder.prototype as any)._setValue = setDecimal;
diff --git a/igv_component/node_modules/apache-arrow/src/builder/dictionary.ts b/igv_component/node_modules/apache-arrow/src/builder/dictionary.ts
new file mode 100644
index 0000000000000000000000000000000000000000..022afd1516f3c8b775ee6f48375d1e6347ec1661
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/dictionary.ts
@@ -0,0 +1,99 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Vector } from '../vector.js';
+import { IntBuilder } from './int.js';
+import { Dictionary, DataType } from '../type.js';
+import { Builder, BuilderOptions } from '../builder.js';
+import { makeBuilder } from '../factories.js';
+
+type DictionaryHashFunction = (x: any) => string | number;
+
+export interface DictionaryBuilderOptions<T extends DataType = any, TNull = any> extends BuilderOptions<T, TNull> {
+    dictionaryHashFunction?: DictionaryHashFunction;
+}
+
+/** @ignore */
+export class DictionaryBuilder<T extends Dictionary, TNull = any> extends Builder<T, TNull> {
+
+    protected _dictionaryOffset: number;
+    protected _dictionary?: Vector<T['dictionary']>;
+    protected _keysToIndices: { [key: string]: number };
+    public readonly indices: IntBuilder<T['indices']>;
+    public readonly dictionary: Builder<T['dictionary']>;
+
+    constructor({ 'type': type, 'nullValues': nulls, 'dictionaryHashFunction': hashFn }: DictionaryBuilderOptions<T, TNull>) {
+        super({ type: new Dictionary(type.dictionary, type.indices, type.id, type.isOrdered) as T });
+        this._nulls = <any>null;
+        this._dictionaryOffset = 0;
+        this._keysToIndices = Object.create(null);
+        this.indices = makeBuilder({ 'type': this.type.indices, 'nullValues': nulls }) as IntBuilder<T['indices']>;
+        this.dictionary = makeBuilder({ 'type': this.type.dictionary, 'nullValues': null }) as Builder<T['dictionary']>;
+        if (typeof hashFn === 'function') {
+            this.valueToKey = hashFn;
+        }
+    }
+
+    public get values() { return this.indices.values; }
+    public get nullCount() { return this.indices.nullCount; }
+    public get nullBitmap() { return this.indices.nullBitmap; }
+    public get byteLength() { return this.indices.byteLength + this.dictionary.byteLength; }
+    public get reservedLength() { return this.indices.reservedLength + this.dictionary.reservedLength; }
+    public get reservedByteLength() { return this.indices.reservedByteLength + this.dictionary.reservedByteLength; }
+    public isValid(value: T['TValue'] | TNull) { return this.indices.isValid(value); }
+    public setValid(index: number, valid: boolean) {
+        const indices = this.indices;
+        valid = indices.setValid(index, valid);
+        this.length = indices.length;
+        return valid;
+    }
+    public setValue(index: number, value: T['TValue']) {
+        const keysToIndices = this._keysToIndices;
+        const key = this.valueToKey(value);
+        let idx = keysToIndices[key];
+        if (idx === undefined) {
+            keysToIndices[key] = idx = this._dictionaryOffset + this.dictionary.append(value).length - 1;
+        }
+        return this.indices.setValue(index, idx);
+    }
+    public flush() {
+        const type = this.type;
+        const prev = this._dictionary;
+        const curr = this.dictionary.toVector();
+        const data = this.indices.flush().clone(type);
+        data.dictionary = prev ? prev.concat(curr) : curr;
+        this.finished || (this._dictionaryOffset += curr.length);
+        this._dictionary = data.dictionary as Vector<T['dictionary']>;
+        this.clear();
+        return data;
+    }
+    public finish() {
+        this.indices.finish();
+        this.dictionary.finish();
+        this._dictionaryOffset = 0;
+        this._keysToIndices = Object.create(null);
+        return super.finish();
+    }
+    public clear() {
+        this.indices.clear();
+        this.dictionary.clear();
+        return super.clear();
+    }
+    public valueToKey(val: any): string | number {
+        return typeof val === 'string' ? val : `${val}`;
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/builder/fixedsizebinary.ts b/igv_component/node_modules/apache-arrow/src/builder/fixedsizebinary.ts
new file mode 100644
index 0000000000000000000000000000000000000000..917e790251b59178472df3101c3cbbe99f6c3953
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/fixedsizebinary.ts
@@ -0,0 +1,25 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { FixedSizeBinary } from '../type.js';
+import { FixedWidthBuilder } from '../builder.js';
+import { setFixedSizeBinary } from '../visitor/set.js';
+
+/** @ignore */
+export class FixedSizeBinaryBuilder<TNull = any> extends FixedWidthBuilder<FixedSizeBinary, TNull> { }
+
+(FixedSizeBinaryBuilder.prototype as any)._setValue = setFixedSizeBinary;
diff --git a/igv_component/node_modules/apache-arrow/src/builder/fixedsizelist.ts b/igv_component/node_modules/apache-arrow/src/builder/fixedsizelist.ts
new file mode 100644
index 0000000000000000000000000000000000000000..f4b4b95df2ef74cc194dc62c9ca7186382541efa
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/fixedsizelist.ts
@@ -0,0 +1,39 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Field } from '../schema.js';
+import { Builder } from '../builder.js';
+import { DataType, FixedSizeList } from '../type.js';
+
+/** @ignore */
+export class FixedSizeListBuilder<T extends DataType = any, TNull = any> extends Builder<FixedSizeList<T>, TNull> {
+    public setValue(index: number, value: T['TValue']) {
+        const [child] = this.children;
+        const start = index * this.stride;
+        for (let i = -1, n = value.length; ++i < n;) {
+            child.set(start + i, value[i]);
+        }
+    }
+    public addChild(child: Builder<T>, name = '0') {
+        if (this.numChildren > 0) {
+            throw new Error('FixedSizeListBuilder can only have one child.');
+        }
+        const childIndex = this.children.push(child);
+        this.type = new FixedSizeList(this.type.listSize, new Field(name, child.type, true));
+        return childIndex;
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/builder/float.ts b/igv_component/node_modules/apache-arrow/src/builder/float.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d67832f93e62c0a608a50eed57ee2fe09d77ab45
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/float.ts
@@ -0,0 +1,41 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { float64ToUint16 } from '../util/math.js';
+import { FixedWidthBuilder } from '../builder.js';
+import { Float, Float16, Float32, Float64 } from '../type.js';
+
+/** @ignore */
+export class FloatBuilder<T extends Float = Float, TNull = any> extends FixedWidthBuilder<T, TNull> {
+    public setValue(index: number, value: number) {
+        this._values.set(index, value);
+    }
+}
+
+/** @ignore */
+export class Float16Builder<TNull = any> extends FloatBuilder<Float16, TNull> {
+    public setValue(index: number, value: number) {
+        // convert JS float64 to a uint16
+        super.setValue(index, float64ToUint16(value));
+    }
+}
+
+/** @ignore */
+export class Float32Builder<TNull = any> extends FloatBuilder<Float32, TNull> { }
+
+/** @ignore */
+export class Float64Builder<TNull = any> extends FloatBuilder<Float64, TNull> { }
diff --git a/igv_component/node_modules/apache-arrow/src/builder/int.ts b/igv_component/node_modules/apache-arrow/src/builder/int.ts
new file mode 100644
index 0000000000000000000000000000000000000000..f7641e7c9e5239307e119f7a72226e8978750309
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/int.ts
@@ -0,0 +1,44 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { FixedWidthBuilder } from '../builder.js';
+import { Int, Int8, Int16, Int32, Int64, Uint8, Uint16, Uint32, Uint64 } from '../type.js';
+
+/** @ignore */
+export class IntBuilder<T extends Int = Int, TNull = any> extends FixedWidthBuilder<T, TNull> {
+    public setValue(index: number, value: T['TValue']) {
+        this._values.set(index, value);
+    }
+}
+
+/** @ignore */
+export class Int8Builder<TNull = any> extends IntBuilder<Int8, TNull> { }
+/** @ignore */
+export class Int16Builder<TNull = any> extends IntBuilder<Int16, TNull> { }
+/** @ignore */
+export class Int32Builder<TNull = any> extends IntBuilder<Int32, TNull> { }
+/** @ignore */
+export class Int64Builder<TNull = any> extends IntBuilder<Int64, TNull> { }
+
+/** @ignore */
+export class Uint8Builder<TNull = any> extends IntBuilder<Uint8, TNull> { }
+/** @ignore */
+export class Uint16Builder<TNull = any> extends IntBuilder<Uint16, TNull> { }
+/** @ignore */
+export class Uint32Builder<TNull = any> extends IntBuilder<Uint32, TNull> { }
+/** @ignore */
+export class Uint64Builder<TNull = any> extends IntBuilder<Uint64, TNull> { }
diff --git a/igv_component/node_modules/apache-arrow/src/builder/interval.ts b/igv_component/node_modules/apache-arrow/src/builder/interval.ts
new file mode 100644
index 0000000000000000000000000000000000000000..31525953af954b887c4bf7d17fcfb5d9ef5f5b76
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/interval.ts
@@ -0,0 +1,35 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { FixedWidthBuilder } from '../builder.js';
+import { Interval, IntervalDayTime, IntervalYearMonth } from '../type.js';
+import { setIntervalValue, setIntervalDayTime, setIntervalYearMonth } from '../visitor/set.js';
+
+/** @ignore */
+export class IntervalBuilder<T extends Interval = Interval, TNull = any> extends FixedWidthBuilder<T, TNull> { }
+
+(IntervalBuilder.prototype as any)._setValue = setIntervalValue;
+
+/** @ignore */
+export class IntervalDayTimeBuilder<TNull = any> extends IntervalBuilder<IntervalDayTime, TNull> { }
+
+(IntervalDayTimeBuilder.prototype as any)._setValue = setIntervalDayTime;
+
+/** @ignore */
+export class IntervalYearMonthBuilder<TNull = any> extends IntervalBuilder<IntervalYearMonth, TNull> { }
+
+(IntervalYearMonthBuilder.prototype as any)._setValue = setIntervalYearMonth;
diff --git a/igv_component/node_modules/apache-arrow/src/builder/list.ts b/igv_component/node_modules/apache-arrow/src/builder/list.ts
new file mode 100644
index 0000000000000000000000000000000000000000..0c188e625b8265d2ec476e2c68d0171a5c8b64df
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/list.ts
@@ -0,0 +1,53 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Field } from '../schema.js';
+import { DataType, List } from '../type.js';
+import { OffsetsBufferBuilder } from './buffer.js';
+import { Builder, BuilderOptions, VariableWidthBuilder } from '../builder.js';
+
+/** @ignore */
+export class ListBuilder<T extends DataType = any, TNull = any> extends VariableWidthBuilder<List<T>, TNull> {
+    protected _offsets: OffsetsBufferBuilder;
+    constructor(opts: BuilderOptions<List<T>, TNull>) {
+        super(opts);
+        this._offsets = new OffsetsBufferBuilder();
+    }
+    public addChild(child: Builder<T>, name = '0') {
+        if (this.numChildren > 0) {
+            throw new Error('ListBuilder can only have one child.');
+        }
+        this.children[this.numChildren] = child;
+        this.type = new List(new Field(name, child.type, true));
+        return this.numChildren - 1;
+    }
+    protected _flushPending(pending: Map<number, T['TValue'] | undefined>) {
+        const offsets = this._offsets;
+        const [child] = this.children;
+        for (const [index, value] of pending) {
+            if (typeof value === 'undefined') {
+                offsets.set(index, 0);
+            } else {
+                const n = value.length;
+                const start = offsets.set(index, n).buffer[index];
+                for (let i = -1; ++i < n;) {
+                    child.set(start + i, value[i]);
+                }
+            }
+        }
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/builder/map.ts b/igv_component/node_modules/apache-arrow/src/builder/map.ts
new file mode 100644
index 0000000000000000000000000000000000000000..4c73c4f2f98d4a34ba984622b84adfa231b451cd
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/map.ts
@@ -0,0 +1,70 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Field } from '../schema.js';
+import { DataType, Map_, Struct } from '../type.js';
+import { Builder, VariableWidthBuilder } from '../builder.js';
+
+/** @ignore */ type MapValue<K extends DataType = any, V extends DataType = any> = Map_<K, V>['TValue'];
+/** @ignore */ type MapValues<K extends DataType = any, V extends DataType = any> = Map<number, MapValue<K, V> | undefined>;
+/** @ignore */ type MapValueExt<K extends DataType = any, V extends DataType = any> = MapValue<K, V> | { [key: string]: V } | { [key: number]: V };
+
+/** @ignore */
+export class MapBuilder<K extends DataType = any, V extends DataType = any, TNull = any> extends VariableWidthBuilder<Map_<K, V>, TNull> {
+
+    declare protected _pending: MapValues<K, V> | undefined;
+    public set(index: number, value: MapValueExt<K, V> | TNull) {
+        return super.set(index, value as MapValue<K, V> | TNull);
+    }
+
+    public setValue(index: number, value: MapValueExt<K, V>) {
+        const row = (value instanceof Map ? value : new Map(Object.entries(value))) as MapValue<K, V>;
+        const pending = this._pending || (this._pending = new Map() as MapValues<K, V>);
+        const current = pending.get(index) as Map<K, V> | undefined;
+        current && (this._pendingLength -= current.size);
+        this._pendingLength += row.size;
+        pending.set(index, row);
+    }
+
+    public addChild(child: Builder<Struct<{ key: K; value: V }>>, name = `${this.numChildren}`) {
+        if (this.numChildren > 0) {
+            throw new Error('ListBuilder can only have one child.');
+        }
+        this.children[this.numChildren] = child;
+        this.type = new Map_<K, V>(new Field(name, child.type, true), this.type.keysSorted);
+        return this.numChildren - 1;
+    }
+
+    protected _flushPending(pending: MapValues<K, V>) {
+        const offsets = this._offsets;
+        const [child] = this.children;
+        for (const [index, value] of pending) {
+            if (value === undefined) {
+                offsets.set(index, 0);
+            } else {
+                let {
+                    [index]: idx,
+                    [index + 1]: end
+                } = offsets.set(index, value.size).buffer;
+                for (const val of value.entries()) {
+                    child.set(idx, val);
+                    if (++idx >= end) break;
+                }
+            }
+        }
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/builder/null.ts b/igv_component/node_modules/apache-arrow/src/builder/null.ts
new file mode 100644
index 0000000000000000000000000000000000000000..fb57bb7b96e82718f7b0b60f672d1bb154ce1d47
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/null.ts
@@ -0,0 +1,29 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Null } from '../type.js';
+import { Builder } from '../builder.js';
+
+/** @ignore */
+export class NullBuilder<TNull = any> extends Builder<Null, TNull> {
+    // @ts-ignore
+    public setValue(index: number, value: null) { }
+    public setValid(index: number, valid: boolean) {
+        this.length = Math.max(index + 1, this.length);
+        return valid;
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/builder/struct.ts b/igv_component/node_modules/apache-arrow/src/builder/struct.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e1beb3d38035cf9284a3e5b28e1b76cd84950b5f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/struct.ts
@@ -0,0 +1,48 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+/* eslint-disable unicorn/no-array-for-each */
+
+import { Field } from '../schema.js';
+import { Builder } from '../builder.js';
+import { Struct, TypeMap } from '../type.js';
+
+/** @ignore */
+export class StructBuilder<T extends TypeMap = any, TNull = any> extends Builder<Struct<T>, TNull> {
+    public setValue(index: number, value: Struct<T>['TValue']) {
+        const { children, type } = this;
+        switch (Array.isArray(value) || value.constructor) {
+            case true: return type.children.forEach((_, i) => children[i].set(index, value[i]));
+            case Map: return type.children.forEach((f, i) => children[i].set(index, value.get(f.name)));
+            default: return type.children.forEach((f, i) => children[i].set(index, value[f.name]));
+        }
+    }
+
+    /** @inheritdoc */
+    public setValid(index: number, valid: boolean) {
+        if (!super.setValid(index, valid)) {
+            this.children.forEach((child) => child.setValid(index, valid));
+        }
+        return valid;
+    }
+
+    public addChild(child: Builder, name = `${this.numChildren}`) {
+        const childIndex = this.children.push(child);
+        this.type = new Struct([...this.type.children, new Field(name, child.type, true)]);
+        return childIndex;
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/builder/time.ts b/igv_component/node_modules/apache-arrow/src/builder/time.ts
new file mode 100644
index 0000000000000000000000000000000000000000..ad1d052ae77d7264286ca191d9f9afaa530c4c21
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/time.ts
@@ -0,0 +1,45 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { FixedWidthBuilder } from '../builder.js';
+import { Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond } from '../type.js';
+import { setTime, setTimeSecond, setTimeMillisecond, setTimeMicrosecond, setTimeNanosecond } from '../visitor/set.js';
+
+/** @ignore */
+export class TimeBuilder<T extends Time = Time, TNull = any> extends FixedWidthBuilder<T, TNull> { }
+
+(TimeBuilder.prototype as any)._setValue = setTime;
+
+/** @ignore */
+export class TimeSecondBuilder<TNull = any> extends TimeBuilder<TimeSecond, TNull> { }
+
+(TimeSecondBuilder.prototype as any)._setValue = setTimeSecond;
+
+/** @ignore */
+export class TimeMillisecondBuilder<TNull = any> extends TimeBuilder<TimeMillisecond, TNull> { }
+
+(TimeMillisecondBuilder.prototype as any)._setValue = setTimeMillisecond;
+
+/** @ignore */
+export class TimeMicrosecondBuilder<TNull = any> extends TimeBuilder<TimeMicrosecond, TNull> { }
+
+(TimeMicrosecondBuilder.prototype as any)._setValue = setTimeMicrosecond;
+
+/** @ignore */
+export class TimeNanosecondBuilder<TNull = any> extends TimeBuilder<TimeNanosecond, TNull> { }
+
+(TimeNanosecondBuilder.prototype as any)._setValue = setTimeNanosecond;
diff --git a/igv_component/node_modules/apache-arrow/src/builder/timestamp.ts b/igv_component/node_modules/apache-arrow/src/builder/timestamp.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2dbf9ee878e93c61edc9c3fdbb2fa574686b81d1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/timestamp.ts
@@ -0,0 +1,45 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { FixedWidthBuilder } from '../builder.js';
+import { Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond } from '../type.js';
+import { setTimestamp, setTimestampSecond, setTimestampMillisecond, setTimestampMicrosecond, setTimestampNanosecond } from '../visitor/set.js';
+
+/** @ignore */
+export class TimestampBuilder<T extends Timestamp = Timestamp, TNull = any> extends FixedWidthBuilder<T, TNull> { }
+
+(TimestampBuilder.prototype as any)._setValue = setTimestamp;
+
+/** @ignore */
+export class TimestampSecondBuilder<TNull = any> extends TimestampBuilder<TimestampSecond, TNull> { }
+
+(TimestampSecondBuilder.prototype as any)._setValue = setTimestampSecond;
+
+/** @ignore */
+export class TimestampMillisecondBuilder<TNull = any> extends TimestampBuilder<TimestampMillisecond, TNull> { }
+
+(TimestampMillisecondBuilder.prototype as any)._setValue = setTimestampMillisecond;
+
+/** @ignore */
+export class TimestampMicrosecondBuilder<TNull = any> extends TimestampBuilder<TimestampMicrosecond, TNull> { }
+
+(TimestampMicrosecondBuilder.prototype as any)._setValue = setTimestampMicrosecond;
+
+/** @ignore */
+export class TimestampNanosecondBuilder<TNull = any> extends TimestampBuilder<TimestampNanosecond, TNull> { }
+
+(TimestampNanosecondBuilder.prototype as any)._setValue = setTimestampNanosecond;
diff --git a/igv_component/node_modules/apache-arrow/src/builder/union.ts b/igv_component/node_modules/apache-arrow/src/builder/union.ts
new file mode 100644
index 0000000000000000000000000000000000000000..1e668f9423e7f20a5407597399a3b06cd940e020
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/union.ts
@@ -0,0 +1,99 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Field } from '../schema.js';
+import { DataBufferBuilder } from './buffer.js';
+import { Builder, BuilderOptions } from '../builder.js';
+import { Union, SparseUnion, DenseUnion } from '../type.js';
+
+export interface UnionBuilderOptions<T extends Union = any, TNull = any> extends BuilderOptions<T, TNull> {
+    valueToChildTypeId?: (builder: UnionBuilder<T, TNull>, value: any, offset: number) => number;
+}
+
+/** @ignore */
+export abstract class UnionBuilder<T extends Union, TNull = any> extends Builder<T, TNull> {
+
+    protected _typeIds: DataBufferBuilder<Int8Array>;
+
+    constructor(options: UnionBuilderOptions<T, TNull>) {
+        super(options);
+        this._typeIds = new DataBufferBuilder(new Int8Array(0), 1);
+        if (typeof options['valueToChildTypeId'] === 'function') {
+            this._valueToChildTypeId = options['valueToChildTypeId'];
+        }
+    }
+
+    public get typeIdToChildIndex() { return this.type.typeIdToChildIndex; }
+
+    public append(value: T['TValue'] | TNull, childTypeId?: number) {
+        return this.set(this.length, value, childTypeId);
+    }
+
+    public set(index: number, value: T['TValue'] | TNull, childTypeId?: number) {
+        if (childTypeId === undefined) {
+            childTypeId = this._valueToChildTypeId(this, value, index);
+        }
+        if (this.setValid(index, this.isValid(value))) {
+            this.setValue(index, value, childTypeId);
+        }
+        return this;
+    }
+
+    public setValue(index: number, value: T['TValue'], childTypeId?: number) {
+        this._typeIds.set(index, childTypeId!);
+        const childIndex = this.type.typeIdToChildIndex[childTypeId!];
+        const child = this.children[childIndex];
+        child?.set(index, value);
+    }
+
+    public addChild(child: Builder, name = `${this.children.length}`) {
+        const childTypeId = this.children.push(child);
+        const { type: { children, mode, typeIds } } = this;
+        const fields = [...children, new Field(name, child.type)];
+        this.type = <T>new Union(mode, [...typeIds, childTypeId], fields);
+        return childTypeId;
+    }
+
+    /** @ignore */
+    // @ts-ignore
+    protected _valueToChildTypeId(builder: UnionBuilder<T, TNull>, value: any, offset: number): number {
+        throw new Error(`Cannot map UnionBuilder value to child typeId. \
+Pass the \`childTypeId\` as the second argument to unionBuilder.append(), \
+or supply a \`valueToChildTypeId\` function as part of the UnionBuilder constructor options.`);
+    }
+}
+
+/** @ignore */
+export class SparseUnionBuilder<T extends SparseUnion, TNull = any> extends UnionBuilder<T, TNull> { }
+/** @ignore */
+export class DenseUnionBuilder<T extends DenseUnion, TNull = any> extends UnionBuilder<T, TNull> {
+
+    protected _offsets: DataBufferBuilder<Int32Array>;
+
+    constructor(options: UnionBuilderOptions<T, TNull>) {
+        super(options);
+        this._offsets = new DataBufferBuilder(new Int32Array(0));
+    }
+
+    /** @ignore */
+    public setValue(index: number, value: T['TValue'], childTypeId?: number) {
+        const id = this._typeIds.set(index, childTypeId!).buffer[index];
+        const child = this.getChildAt(this.type.typeIdToChildIndex[id])!;
+        const denseIndex = this._offsets.set(index, child.length).buffer[index];
+        child?.set(denseIndex, value);
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/builder/utf8.ts b/igv_component/node_modules/apache-arrow/src/builder/utf8.ts
new file mode 100644
index 0000000000000000000000000000000000000000..53b8306cbaffd0b31b9fa31605b4ac2bef4b6627
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/utf8.ts
@@ -0,0 +1,44 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Utf8 } from '../type.js';
+import { encodeUtf8 } from '../util/utf8.js';
+import { BinaryBuilder } from './binary.js';
+import { BufferBuilder } from './buffer.js';
+import { VariableWidthBuilder, BuilderOptions } from '../builder.js';
+
+/** @ignore */
+export class Utf8Builder<TNull = any> extends VariableWidthBuilder<Utf8, TNull> {
+    constructor(opts: BuilderOptions<Utf8, TNull>) {
+        super(opts);
+        this._values = new BufferBuilder(new Uint8Array(0));
+    }
+    public get byteLength(): number {
+        let size = this._pendingLength + (this.length * 4);
+        this._offsets && (size += this._offsets.byteLength);
+        this._values && (size += this._values.byteLength);
+        this._nulls && (size += this._nulls.byteLength);
+        return size;
+    }
+    public setValue(index: number, value: string) {
+        return super.setValue(index, encodeUtf8(value) as any);
+    }
+    // @ts-ignore
+    protected _flushPending(pending: Map<number, Uint8Array | undefined>, pendingLength: number): void { }
+}
+
+(Utf8Builder.prototype as any)._flushPending = (BinaryBuilder.prototype as any)._flushPending;
diff --git a/igv_component/node_modules/apache-arrow/src/builder/valid.ts b/igv_component/node_modules/apache-arrow/src/builder/valid.ts
new file mode 100644
index 0000000000000000000000000000000000000000..c38af7208b625bce7d053d02f6319d1f918c4345
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/builder/valid.ts
@@ -0,0 +1,77 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { DataType } from '../type.js';
+import { valueToString } from '../util/pretty.js';
+import { BigIntAvailable } from '../util/compat.js';
+
+/**
+ * Dynamically compile the null values into an `isValid()` function whose
+ * implementation is a switch statement. Microbenchmarks in v8 indicate
+ * this approach is 25% faster than using an ES6 Map.
+ *
+ * @example
+ * console.log(createIsValidFunction([null, 'N/A', NaN]));
+ * `function (x) {
+ *     if (x !== x) return false;
+ *     switch (x) {
+ *         case null:
+ *         case "N/A":
+ *             return false;
+ *     }
+ *     return true;
+ * }`
+ *
+ * @ignore
+ * @param nullValues
+ */
+export function createIsValidFunction<T extends DataType = any, TNull = any>(nullValues?: ReadonlyArray<TNull>) {
+
+    if (!nullValues || nullValues.length <= 0) {
+        // @ts-ignore
+        return function isValid(value: any) { return true; };
+    }
+
+    let fnBody = '';
+    const noNaNs = nullValues.filter((x) => x === x);
+
+    if (noNaNs.length > 0) {
+        fnBody = `
+    switch (x) {${noNaNs.map((x) => `
+        case ${valueToCase(x)}:`).join('')}
+            return false;
+    }`;
+    }
+
+    // NaN doesn't equal anything including itself, so it doesn't work as a
+    // switch case. Instead we must explicitly check for NaN before the switch.
+    if (nullValues.length !== noNaNs.length) {
+        fnBody = `if (x !== x) return false;\n${fnBody}`;
+    }
+
+    return new Function(`x`, `${fnBody}\nreturn true;`) as (value: T['TValue'] | TNull) => boolean;
+}
+
+/** @ignore */
+function valueToCase(x: any) {
+    if (typeof x !== 'bigint') {
+        return valueToString(x);
+    } else if (BigIntAvailable) {
+        return `${valueToString(x)}n`;
+    }
+    return `"${valueToString(x)}"`;
+}
diff --git a/igv_component/node_modules/apache-arrow/src/data.ts b/igv_component/node_modules/apache-arrow/src/data.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b6f53b6d0e1316d9731779384a212e7d50396859
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/data.ts
@@ -0,0 +1,439 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Vector } from './vector.js';
+import { BufferType, Type } from './enum.js';
+import { DataType, strideForType } from './type.js';
+import { popcnt_bit_range, truncateBitmap } from './util/bit.js';
+
+// When slicing, we do not know the null count of the sliced range without
+// doing some computation. To avoid doing this eagerly, we set the null count
+// to -1 (any negative number will do). When Vector.nullCount is called the
+// first time, the null count will be computed. See ARROW-33
+/** @ignore */ export type kUnknownNullCount = -1;
+/** @ignore */ export const kUnknownNullCount = -1;
+
+/** @ignore */ export type NullBuffer = Uint8Array | null | undefined;
+/** @ignore */ export type TypeIdsBuffer = Int8Array | ArrayLike<number> | Iterable<number> | undefined;
+/** @ignore */ export type ValueOffsetsBuffer = Int32Array | ArrayLike<number> | Iterable<number> | undefined;
+/** @ignore */ export type DataBuffer<T extends DataType> = T['TArray'] | ArrayLike<number> | Iterable<number> | undefined;
+
+/** @ignore */
+export interface Buffers<T extends DataType> {
+    [BufferType.OFFSET]: Int32Array;
+    [BufferType.DATA]: T['TArray'];
+    [BufferType.VALIDITY]: Uint8Array;
+    [BufferType.TYPE]: T['TArray'];
+}
+
+/** @ignore */
+export interface Data<T extends DataType = DataType> {
+    readonly TType: T['TType'];
+    readonly TArray: T['TArray'];
+    readonly TValue: T['TValue'];
+}
+
+/**
+ * Data structure underlying {@link Vector}s. Use the convenience method {@link makeData}.
+ */
+export class Data<T extends DataType = DataType> {
+
+    declare public readonly type: T;
+    declare public readonly length: number;
+    declare public readonly offset: number;
+    declare public readonly stride: number;
+    declare public readonly nullable: boolean;
+    declare public readonly children: Data[];
+
+    /**
+     * The dictionary for this Vector, if any. Only used for Dictionary type.
+     */
+    declare public dictionary?: Vector;
+
+    declare public readonly values: Buffers<T>[BufferType.DATA];
+    declare public readonly typeIds: Buffers<T>[BufferType.TYPE];
+    declare public readonly nullBitmap: Buffers<T>[BufferType.VALIDITY];
+    declare public readonly valueOffsets: Buffers<T>[BufferType.OFFSET];
+
+    public get typeId(): T['TType'] { return this.type.typeId; }
+    public get ArrayType(): T['ArrayType'] { return this.type.ArrayType; }
+    public get buffers() {
+        return [this.valueOffsets, this.values, this.nullBitmap, this.typeIds] as Buffers<T>;
+    }
+    public get byteLength(): number {
+        let byteLength = 0;
+        const { valueOffsets, values, nullBitmap, typeIds } = this;
+        valueOffsets && (byteLength += valueOffsets.byteLength);
+        values && (byteLength += values.byteLength);
+        nullBitmap && (byteLength += nullBitmap.byteLength);
+        typeIds && (byteLength += typeIds.byteLength);
+        return this.children.reduce((byteLength, child) => byteLength + child.byteLength, byteLength);
+    }
+
+    protected _nullCount: number | kUnknownNullCount;
+
+    public get nullCount() {
+        let nullCount = this._nullCount;
+        let nullBitmap: Uint8Array | undefined;
+        if (nullCount <= kUnknownNullCount && (nullBitmap = this.nullBitmap)) {
+            this._nullCount = nullCount = this.length - popcnt_bit_range(nullBitmap, this.offset, this.offset + this.length);
+        }
+        return nullCount;
+    }
+
+    constructor(type: T, offset: number, length: number, nullCount?: number, buffers?: Partial<Buffers<T>> | Data<T>, children: Data[] = [], dictionary?: Vector) {
+        this.type = type;
+        this.children = children;
+        this.dictionary = dictionary;
+        this.offset = Math.floor(Math.max(offset || 0, 0));
+        this.length = Math.floor(Math.max(length || 0, 0));
+        this._nullCount = Math.floor(Math.max(nullCount || 0, -1));
+        let buffer: Buffers<T>[keyof Buffers<T>];
+        if (buffers instanceof Data) {
+            this.stride = buffers.stride;
+            this.values = buffers.values;
+            this.typeIds = buffers.typeIds;
+            this.nullBitmap = buffers.nullBitmap;
+            this.valueOffsets = buffers.valueOffsets;
+        } else {
+            this.stride = strideForType(type);
+            if (buffers) {
+                (buffer = (buffers as Buffers<T>)[0]) && (this.valueOffsets = buffer);
+                (buffer = (buffers as Buffers<T>)[1]) && (this.values = buffer);
+                (buffer = (buffers as Buffers<T>)[2]) && (this.nullBitmap = buffer);
+                (buffer = (buffers as Buffers<T>)[3]) && (this.typeIds = buffer);
+            }
+        }
+        this.nullable = this._nullCount !== 0 && this.nullBitmap && this.nullBitmap.byteLength > 0;
+    }
+
+    public getValid(index: number) {
+        if (this.nullable && this.nullCount > 0) {
+            const pos = this.offset + index;
+            const val = this.nullBitmap[pos >> 3];
+            return (val & (1 << (pos % 8))) !== 0;
+        }
+        return true;
+    }
+
+    public setValid(index: number, value: boolean) {
+        // Don't interact w/ nullBitmap if not nullable
+        if (!this.nullable) { return value; }
+        // If no null bitmap, initialize one on the fly
+        if (!this.nullBitmap || this.nullBitmap.byteLength <= (index >> 3)) {
+            const { nullBitmap } = this._changeLengthAndBackfillNullBitmap(this.length);
+            Object.assign(this, { nullBitmap, _nullCount: 0 });
+        }
+        const { nullBitmap, offset } = this;
+        const pos = (offset + index) >> 3;
+        const bit = (offset + index) % 8;
+        const val = (nullBitmap[pos] >> bit) & 1;
+        // If `val` is truthy and the current bit is 0, flip it to 1 and increment `_nullCount`.
+        // If `val` is falsey and the current bit is 1, flip it to 0 and decrement `_nullCount`.
+        value ? val === 0 && ((nullBitmap[pos] |= (1 << bit)), (this._nullCount = this.nullCount + 1))
+            : val === 1 && ((nullBitmap[pos] &= ~(1 << bit)), (this._nullCount = this.nullCount - 1));
+        return value;
+    }
+
+    public clone<R extends DataType = T>(type: R = this.type as any, offset = this.offset, length = this.length, nullCount = this._nullCount, buffers: Buffers<R> = <any>this, children: Data[] = this.children) {
+        return new Data(type, offset, length, nullCount, buffers, children, this.dictionary);
+    }
+
+    public slice(offset: number, length: number): Data<T> {
+        const { stride, typeId, children } = this;
+        // +true === 1, +false === 0, so this means
+        // we keep nullCount at 0 if it's already 0,
+        // otherwise set to the invalidated flag -1
+        const nullCount = +(this._nullCount === 0) - 1;
+        const childStride = typeId === 16 /* FixedSizeList */ ? stride : 1;
+        const buffers = this._sliceBuffers(offset, length, stride, typeId);
+        return this.clone<T>(this.type, this.offset + offset, length, nullCount, buffers,
+            // Don't slice children if we have value offsets (the variable-width types)
+            (children.length === 0 || this.valueOffsets) ? children : this._sliceChildren(children, childStride * offset, childStride * length));
+    }
+
+    public _changeLengthAndBackfillNullBitmap(newLength: number): Data<T> {
+        if (this.typeId === Type.Null) {
+            return this.clone(this.type, 0, newLength, 0);
+        }
+        const { length, nullCount } = this;
+        // start initialized with 0s (nulls), then fill from 0 to length with 1s (not null)
+        const bitmap = new Uint8Array(((newLength + 63) & ~63) >> 3).fill(255, 0, length >> 3);
+        // set all the bits in the last byte (up to bit `length - length % 8`) to 1 (not null)
+        bitmap[length >> 3] = (1 << (length - (length & ~7))) - 1;
+        // if we have a nullBitmap, truncate + slice and set it over the pre-filled 1s
+        if (nullCount > 0) {
+            bitmap.set(truncateBitmap(this.offset, length, this.nullBitmap), 0);
+        }
+        const buffers = this.buffers;
+        buffers[BufferType.VALIDITY] = bitmap;
+        return this.clone(this.type, 0, newLength, nullCount + (newLength - length), buffers);
+    }
+
+    protected _sliceBuffers(offset: number, length: number, stride: number, typeId: T['TType']): Buffers<T> {
+        let arr: any;
+        const { buffers } = this;
+        // If typeIds exist, slice the typeIds buffer
+        (arr = buffers[BufferType.TYPE]) && (buffers[BufferType.TYPE] = arr.subarray(offset, offset + length));
+        // If offsets exist, only slice the offsets buffer
+        (arr = buffers[BufferType.OFFSET]) && (buffers[BufferType.OFFSET] = arr.subarray(offset, offset + length + 1)) ||
+            // Otherwise if no offsets, slice the data buffer. Don't slice the data vector for Booleans, since the offset goes by bits not bytes
+            (arr = buffers[BufferType.DATA]) && (buffers[BufferType.DATA] = typeId === 6 ? arr : arr.subarray(stride * offset, stride * (offset + length)));
+        return buffers;
+    }
+
+    protected _sliceChildren(children: Data[], offset: number, length: number): Data[] {
+        return children.map((child) => child.slice(offset, length));
+    }
+}
+
+(Data.prototype as any).children = Object.freeze([]);
+
+import {
+    Dictionary,
+    Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct,
+    Float,
+    Int,
+    Date_,
+    Interval,
+    Time,
+    Timestamp,
+    Union, DenseUnion, SparseUnion,
+} from './type.js';
+
+import { Visitor } from './visitor.js';
+import { toArrayBufferView, toInt32Array, toUint8Array } from './util/buffer.js';
+
+class MakeDataVisitor extends Visitor {
+    public visit<T extends DataType>(props: any): Data<T> {
+        return this.getVisitFn(props['type']).call(this, props);
+    }
+    public visitNull<T extends Null>(props: NullDataProps<T>) {
+        const {
+            ['type']: type,
+            ['offset']: offset = 0,
+            ['length']: length = 0,
+        } = props;
+        return new Data(type, offset, length, 0);
+    }
+    public visitBool<T extends Bool>(props: BoolDataProps<T>) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length >> 3, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    public visitInt<T extends Int>(props: IntDataProps<T>) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    public visitFloat<T extends Float>(props: FloatDataProps<T>) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    public visitUtf8<T extends Utf8>(props: Utf8DataProps<T>) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const data = toUint8Array(props['data']);
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const valueOffsets = toInt32Array(props['valueOffsets']);
+        const { ['length']: length = valueOffsets.length - 1, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
+        return new Data(type, offset, length, nullCount, [valueOffsets, data, nullBitmap]);
+    }
+    public visitBinary<T extends Binary>(props: BinaryDataProps<T>) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const data = toUint8Array(props['data']);
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const valueOffsets = toInt32Array(props['valueOffsets']);
+        const { ['length']: length = valueOffsets.length - 1, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
+        return new Data(type, offset, length, nullCount, [valueOffsets, data, nullBitmap]);
+    }
+    public visitFixedSizeBinary<T extends FixedSizeBinary>(props: FixedSizeBinaryDataProps<T>) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / strideForType(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    public visitDate<T extends Date_>(props: Date_DataProps<T>) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / strideForType(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    public visitTimestamp<T extends Timestamp>(props: TimestampDataProps<T>) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / strideForType(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    public visitTime<T extends Time>(props: TimeDataProps<T>) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / strideForType(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    public visitDecimal<T extends Decimal>(props: DecimalDataProps<T>) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / strideForType(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    public visitList<T extends List>(props: ListDataProps<T>) {
+        const { ['type']: type, ['offset']: offset = 0, ['child']: child } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const valueOffsets = toInt32Array(props['valueOffsets']);
+        const { ['length']: length = valueOffsets.length - 1, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
+        return new Data(type, offset, length, nullCount, [valueOffsets, undefined, nullBitmap], [child]);
+    }
+    public visitStruct<T extends Struct>(props: StructDataProps<T>) {
+        const { ['type']: type, ['offset']: offset = 0, ['children']: children = [] } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const {
+            length = children.reduce((len, { length }) => Math.max(len, length), 0),
+            nullCount = props['nullBitmap'] ? -1 : 0
+        } = props;
+        return new Data(type, offset, length, nullCount, [undefined, undefined, nullBitmap], children);
+    }
+    public visitUnion<T extends Union>(props: UnionDataProps<T>) {
+        const { ['type']: type, ['offset']: offset = 0, ['children']: children = [] } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const typeIds = toArrayBufferView(type.ArrayType, props['typeIds']);
+        const { ['length']: length = typeIds.length, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        if (DataType.isSparseUnion(type)) {
+            return new Data(type, offset, length, nullCount, [undefined, undefined, nullBitmap, typeIds], children);
+        }
+        const valueOffsets = toInt32Array(props['valueOffsets']);
+        return new Data(type, offset, length, nullCount, [valueOffsets, undefined, nullBitmap, typeIds], children);
+    }
+    public visitDictionary<T extends Dictionary>(props: DictionaryDataProps<T>) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.indices.ArrayType, props['data']);
+        const { ['dictionary']: dictionary = new Vector([new MakeDataVisitor().visit({ type: type.dictionary })]) } = props;
+        const { ['length']: length = data.length, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap], [], dictionary);
+    }
+    public visitInterval<T extends Interval>(props: IntervalDataProps<T>) {
+        const { ['type']: type, ['offset']: offset = 0 } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const data = toArrayBufferView(type.ArrayType, props['data']);
+        const { ['length']: length = data.length / strideForType(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [undefined, data, nullBitmap]);
+    }
+    public visitFixedSizeList<T extends FixedSizeList>(props: FixedSizeListDataProps<T>) {
+        const { ['type']: type, ['offset']: offset = 0, ['child']: child = new MakeDataVisitor().visit({ type: type.valueType }) } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const { ['length']: length = child.length / strideForType(type), ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0 } = props;
+        return new Data(type, offset, length, nullCount, [undefined, undefined, nullBitmap], [child]);
+    }
+    public visitMap<T extends Map_>(props: Map_DataProps<T>) {
+        const { ['type']: type, ['offset']: offset = 0, ['child']: child = new MakeDataVisitor().visit({ type: type.childType }) } = props;
+        const nullBitmap = toUint8Array(props['nullBitmap']);
+        const valueOffsets = toInt32Array(props['valueOffsets']);
+        const { ['length']: length = valueOffsets.length - 1, ['nullCount']: nullCount = props['nullBitmap'] ? -1 : 0, } = props;
+        return new Data(type, offset, length, nullCount, [valueOffsets, undefined, nullBitmap], [child]);
+    }
+}
+
+/** @ignore */
+interface DataProps_<T extends DataType> {
+    type: T;
+    offset?: number;
+    length?: number;
+    nullCount?: number;
+    nullBitmap?: NullBuffer;
+}
+
+interface NullDataProps<T extends Null> { type: T; offset?: number; length?: number }
+interface IntDataProps<T extends Int> extends DataProps_<T> { data?: DataBuffer<T> }
+interface DictionaryDataProps<T extends Dictionary> extends DataProps_<T> { data?: DataBuffer<T>; dictionary?: Vector<T['dictionary']> }
+interface FloatDataProps<T extends Float> extends DataProps_<T> { data?: DataBuffer<T> }
+interface BoolDataProps<T extends Bool> extends DataProps_<T> { data?: DataBuffer<T> }
+interface DecimalDataProps<T extends Decimal> extends DataProps_<T> { data?: DataBuffer<T> }
+interface Date_DataProps<T extends Date_> extends DataProps_<T> { data?: DataBuffer<T> }
+interface TimeDataProps<T extends Time> extends DataProps_<T> { data?: DataBuffer<T> }
+interface TimestampDataProps<T extends Timestamp> extends DataProps_<T> { data?: DataBuffer<T> }
+interface IntervalDataProps<T extends Interval> extends DataProps_<T> { data?: DataBuffer<T> }
+interface FixedSizeBinaryDataProps<T extends FixedSizeBinary> extends DataProps_<T> { data?: DataBuffer<T> }
+interface BinaryDataProps<T extends Binary> extends DataProps_<T> { valueOffsets: ValueOffsetsBuffer; data?: DataBuffer<T> }
+interface Utf8DataProps<T extends Utf8> extends DataProps_<T> { valueOffsets: ValueOffsetsBuffer; data?: DataBuffer<T> }
+interface ListDataProps<T extends List> extends DataProps_<T> { valueOffsets: ValueOffsetsBuffer; child: Data<T['valueType']> }
+interface FixedSizeListDataProps<T extends FixedSizeList> extends DataProps_<T> { child: Data<T['valueType']> }
+interface StructDataProps<T extends Struct> extends DataProps_<T> { children: Data[] }
+interface Map_DataProps<T extends Map_> extends DataProps_<T> { valueOffsets: ValueOffsetsBuffer; child: Data }
+interface SparseUnionDataProps<T extends SparseUnion> extends DataProps_<T> { typeIds: TypeIdsBuffer; children: Data[] }
+interface DenseUnionDataProps<T extends DenseUnion> extends DataProps_<T> { typeIds: TypeIdsBuffer; children: Data[]; valueOffsets: ValueOffsetsBuffer }
+interface UnionDataProps<T extends Union> extends DataProps_<T> { typeIds: TypeIdsBuffer; children: Data[]; valueOffsets?: ValueOffsetsBuffer }
+
+export type DataProps<T extends DataType> = (
+    T extends Null /*            */ ? NullDataProps<T> :
+    T extends Int /*             */ ? IntDataProps<T> :
+    T extends Dictionary /*      */ ? DictionaryDataProps<T> :
+    T extends Float /*           */ ? FloatDataProps<T> :
+    T extends Bool /*            */ ? BoolDataProps<T> :
+    T extends Decimal /*         */ ? DecimalDataProps<T> :
+    T extends Date_ /*           */ ? Date_DataProps<T> :
+    T extends Time /*            */ ? TimeDataProps<T> :
+    T extends Timestamp /*       */ ? TimestampDataProps<T> :
+    T extends Interval /*        */ ? IntervalDataProps<T> :
+    T extends FixedSizeBinary /* */ ? FixedSizeBinaryDataProps<T> :
+    T extends Binary /*          */ ? BinaryDataProps<T> :
+    T extends Utf8 /*            */ ? Utf8DataProps<T> :
+    T extends List /*            */ ? ListDataProps<T> :
+    T extends FixedSizeList /*   */ ? FixedSizeListDataProps<T> :
+    T extends Struct /*          */ ? StructDataProps<T> :
+    T extends Map_ /*            */ ? Map_DataProps<T> :
+    T extends SparseUnion /*     */ ? SparseUnionDataProps<T> :
+    T extends DenseUnion /*      */ ? DenseUnionDataProps<T> :
+    T extends Union /*           */ ? UnionDataProps<T> :
+ /*                                */ DataProps_<T>
+);
+
+export function makeData<T extends Null>(props: NullDataProps<T>): Data<T>;
+export function makeData<T extends Int>(props: IntDataProps<T>): Data<T>;
+export function makeData<T extends Dictionary>(props: DictionaryDataProps<T>): Data<T>;
+export function makeData<T extends Float>(props: FloatDataProps<T>): Data<T>;
+export function makeData<T extends Bool>(props: BoolDataProps<T>): Data<T>;
+export function makeData<T extends Decimal>(props: DecimalDataProps<T>): Data<T>;
+export function makeData<T extends Date_>(props: Date_DataProps<T>): Data<T>;
+export function makeData<T extends Time>(props: TimeDataProps<T>): Data<T>;
+export function makeData<T extends Timestamp>(props: TimestampDataProps<T>): Data<T>;
+export function makeData<T extends Interval>(props: IntervalDataProps<T>): Data<T>;
+export function makeData<T extends FixedSizeBinary>(props: FixedSizeBinaryDataProps<T>): Data<T>;
+export function makeData<T extends Binary>(props: BinaryDataProps<T>): Data<T>;
+export function makeData<T extends Utf8>(props: Utf8DataProps<T>): Data<T>;
+export function makeData<T extends List>(props: ListDataProps<T>): Data<T>;
+export function makeData<T extends FixedSizeList>(props: FixedSizeListDataProps<T>): Data<T>;
+export function makeData<T extends Struct>(props: StructDataProps<T>): Data<T>;
+export function makeData<T extends Map_>(props: Map_DataProps<T>): Data<T>;
+export function makeData<T extends SparseUnion>(props: SparseUnionDataProps<T>): Data<T>;
+export function makeData<T extends DenseUnion>(props: DenseUnionDataProps<T>): Data<T>;
+export function makeData<T extends Union>(props: UnionDataProps<T>): Data<T>;
+export function makeData<T extends DataType>(props: DataProps_<T>): Data<T>;
+export function makeData(props: any) {
+    return new MakeDataVisitor().visit(props);
+}
diff --git a/igv_component/node_modules/apache-arrow/src/enum.ts b/igv_component/node_modules/apache-arrow/src/enum.ts
new file mode 100644
index 0000000000000000000000000000000000000000..f5856bc06afbe1ef29183b88e8351d79f682decc
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/enum.ts
@@ -0,0 +1,226 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+////
+//
+// A few enums copied from `fb/Schema.ts` and `fb/Message.ts` because Webpack
+// v4 doesn't seem to be able to tree-shake the rest of those exports.
+//
+// We will have to keep these enums in sync when we re-generate the flatbuffers
+// code from the shchemas. See js/DEVELOP.md for info on how to run flatbuffers
+// code generation.
+//
+////
+
+/**
+ * Logical types, vector layouts, and schemas
+ *
+ * @enum {number}
+ */
+export enum MetadataVersion {
+    /**
+     * 0.1.0 (October 2016).
+     */
+    V1 = 0,
+
+    /**
+     * 0.2.0 (February 2017). Non-backwards compatible with V1.
+     */
+    V2 = 1,
+
+    /**
+     * 0.3.0 -> 0.7.1 (May - December 2017). Non-backwards compatible with V2.
+     */
+    V3 = 2,
+
+    /**
+     * >= 0.8.0 (December 2017). Non-backwards compatible with V3.
+     */
+    V4 = 3,
+
+    /**
+     * >= 1.0.0 (July 2020. Backwards compatible with V4 (V5 readers can read V4
+     * metadata and IPC messages). Implementations are recommended to provide a
+     * V4 compatibility mode with V5 format changes disabled.
+     *
+     * Incompatible changes between V4 and V5:
+     * - Union buffer layout has changed. In V5, Unions don't have a validity
+     *   bitmap buffer.
+     */
+    V5 = 4
+}
+
+/**
+ * @enum {number}
+ */
+export enum UnionMode {
+    Sparse = 0,
+    Dense = 1
+}
+
+/**
+ * @enum {number}
+ */
+export enum Precision {
+    HALF = 0,
+    SINGLE = 1,
+    DOUBLE = 2
+}
+
+/**
+ * @enum {number}
+ */
+export enum DateUnit {
+    DAY = 0,
+    MILLISECOND = 1
+}
+
+/**
+ * @enum {number}
+ */
+export enum TimeUnit {
+    SECOND = 0,
+    MILLISECOND = 1,
+    MICROSECOND = 2,
+    NANOSECOND = 3
+}
+
+/**
+ * @enum {number}
+ */
+export enum IntervalUnit {
+    YEAR_MONTH = 0,
+    DAY_TIME = 1,
+    MONTH_DAY_NANO = 2
+}
+
+/**
+ * ----------------------------------------------------------------------
+ * The root Message type
+ * This union enables us to easily send different message types without
+ * redundant storage, and in the future we can easily add new message types.
+ *
+ * Arrow implementations do not need to implement all of the message types,
+ * which may include experimental metadata types. For maximum compatibility,
+ * it is best to send data using RecordBatch
+ *
+ * @enum {number}
+ */
+export enum MessageHeader {
+    NONE = 0,
+    Schema = 1,
+    DictionaryBatch = 2,
+    RecordBatch = 3,
+    Tensor = 4,
+    SparseTensor = 5
+}
+
+/**
+ * Main data type enumeration.
+ *
+ * Data types in this library are all *logical*. They can be expressed as
+ * either a primitive physical type (bytes or bits of some fixed size), a
+ * nested type consisting of other data types, or another data type (e.g. a
+ * timestamp encoded as an int64).
+ *
+ * **Note**: Only enum values 0-17 (NONE through Map) are written to an Arrow
+ * IPC payload.
+ *
+ * The rest of the values are specified here so TypeScript can narrow the type
+ * signatures further beyond the base Arrow Types. The Arrow DataTypes include
+ * metadata like `bitWidth` that impact the type signatures of the values we
+ * accept and return.
+ *
+ * For example, the `Int8Vector` reads 1-byte numbers from an `Int8Array`, an
+ * `Int32Vector` reads a 4-byte number from an `Int32Array`, and an `Int64Vector`
+ * reads a pair of 4-byte lo, hi 32-bit integers as a zero-copy slice from the
+ * underlying `Int32Array`.
+ *
+ * Library consumers benefit by knowing the narrowest type, since we can ensure
+ * the types across all public methods are propagated, and never bail to `any`.
+ * These values are _never_ used at runtime, and they will _never_ be written
+ * to the flatbuffers metadata of serialized Arrow IPC payloads.
+ */
+export enum Type {
+    NONE = 0, /** The default placeholder type */
+    Null = 1, /** A NULL type having no physical storage */
+    Int = 2, /** Signed or unsigned 8, 16, 32, or 64-bit little-endian integer */
+    Float = 3, /** 2, 4, or 8-byte floating point value */
+    Binary = 4, /** Variable-length bytes (no guarantee of UTF8-ness) */
+    Utf8 = 5, /** UTF8 variable-length string as List<Char> */
+    Bool = 6, /** Boolean as 1 bit, LSB bit-packed ordering */
+    Decimal = 7, /** Precision-and-scale-based decimal type. Storage type depends on the parameters. */
+    Date = 8, /** int32_t days or int64_t milliseconds since the UNIX epoch */
+    Time = 9, /** Time as signed 32 or 64-bit integer, representing either seconds, milliseconds, microseconds, or nanoseconds since midnight since midnight */
+    Timestamp = 10, /** Exact timestamp encoded with int64 since UNIX epoch (Default unit millisecond) */
+    Interval = 11, /** YEAR_MONTH or DAY_TIME interval in SQL style */
+    List = 12, /** A list of some logical data type */
+    Struct = 13, /** Struct of logical types */
+    Union = 14, /** Union of logical types */
+    FixedSizeBinary = 15, /** Fixed-size binary. Each value occupies the same number of bytes */
+    FixedSizeList = 16, /** Fixed-size list. Each value occupies the same number of bytes */
+    Map = 17, /** Map of named logical types */
+
+    Dictionary = -1, /** Dictionary aka Category type */
+    Int8 = -2,
+    Int16 = -3,
+    Int32 = -4,
+    Int64 = -5,
+    Uint8 = -6,
+    Uint16 = -7,
+    Uint32 = -8,
+    Uint64 = -9,
+    Float16 = -10,
+    Float32 = -11,
+    Float64 = -12,
+    DateDay = -13,
+    DateMillisecond = -14,
+    TimestampSecond = -15,
+    TimestampMillisecond = -16,
+    TimestampMicrosecond = -17,
+    TimestampNanosecond = -18,
+    TimeSecond = -19,
+    TimeMillisecond = -20,
+    TimeMicrosecond = -21,
+    TimeNanosecond = -22,
+    DenseUnion = -23,
+    SparseUnion = -24,
+    IntervalDayTime = -25,
+    IntervalYearMonth = -26,
+}
+
+export enum BufferType {
+    /**
+     * used in List type, Dense Union and variable length primitive types (String, Binary)
+     */
+    OFFSET = 0,
+
+    /**
+     * actual data, either wixed width primitive types in slots or variable width delimited by an OFFSET vector
+     */
+    DATA = 1,
+
+    /**
+     * Bit vector indicating if each value is null
+     */
+    VALIDITY = 2,
+
+    /**
+     * Type vector used in Union type
+     */
+    TYPE = 3
+}
diff --git a/igv_component/node_modules/apache-arrow/src/factories.ts b/igv_component/node_modules/apache-arrow/src/factories.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6f06efba6caccb3ced172a37eb7991c0422097b6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/factories.ts
@@ -0,0 +1,272 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Field, Schema } from './schema.js';
+import * as dtypes from './type.js';
+import { Data, DataProps } from './data.js';
+import { BuilderType, JavaScriptDataType } from './interfaces.js';
+import { Vector, makeVector } from './vector.js';
+import { Builder, BuilderOptions } from './builder.js';
+import { instance as getBuilderConstructor } from './visitor/builderctor.js';
+import { ArrayDataType, BigIntArray, JavaScriptArrayDataType, TypedArray, TypedArrayDataType } from './interfaces.js';
+import { Table } from './table.js';
+import { RecordBatch } from './recordbatch.js';
+import { compareTypes } from './visitor/typecomparator.js';
+
+export function makeBuilder<T extends dtypes.DataType = any, TNull = any>(options: BuilderOptions<T, TNull>): BuilderType<T, TNull> {
+
+    const type = options.type;
+    const builder = new (getBuilderConstructor.getVisitFn<T>(type)())(options) as Builder<T, TNull>;
+
+    if (type.children && type.children.length > 0) {
+
+        const children = options['children'] || [] as BuilderOptions[];
+        const defaultOptions = { 'nullValues': options['nullValues'] };
+        const getChildOptions = Array.isArray(children)
+            ? ((_: Field, i: number) => children[i] || defaultOptions)
+            : (({ name }: Field) => children[name] || defaultOptions);
+
+        for (const [index, field] of type.children.entries()) {
+            const { type } = field;
+            const opts = getChildOptions(field, index);
+            builder.children.push(makeBuilder({ ...opts, type }));
+        }
+    }
+
+    return builder as BuilderType<T, TNull>;
+}
+
+/**
+ * Creates a Vector from a JavaScript array via a {@link Builder}.
+ * Use {@link makeVector} if you only want to create a vector from a typed array.
+ *
+ * @example
+ * ```ts
+ * const vf64 = vectorFromArray([1, 2, 3]);
+ * const vi8 = vectorFromArray([1, 2, 3], new Int8);
+ * const vdict = vectorFromArray(['foo', 'bar']);
+ * const vstruct = vectorFromArray([{a: 'foo', b: 42}, {a: 'bar', b: 12}]);
+ * ```
+ */
+export function vectorFromArray(values: readonly (null | undefined)[], type?: dtypes.Null): Vector<dtypes.Null>;
+export function vectorFromArray(values: readonly (null | undefined | boolean)[], type?: dtypes.Bool): Vector<dtypes.Bool>;
+export function vectorFromArray<T extends dtypes.Utf8 | dtypes.Dictionary<dtypes.Utf8> = dtypes.Dictionary<dtypes.Utf8, dtypes.Int32>>(values: readonly (null | undefined | string)[], type?: T): Vector<T>;
+export function vectorFromArray<T extends dtypes.Date_>(values: readonly (null | undefined | Date)[], type?: T): Vector<T>;
+export function vectorFromArray<T extends dtypes.Int>(values: readonly (null | undefined | number)[], type: T): Vector<T>;
+export function vectorFromArray<T extends dtypes.Int64 | dtypes.Uint64 = dtypes.Int64>(values: readonly (null | undefined | bigint)[], type?: T): Vector<T>;
+export function vectorFromArray<T extends dtypes.Float = dtypes.Float64>(values: readonly (null | undefined | number)[], type?: T): Vector<T>;
+export function vectorFromArray<T extends dtypes.DataType>(values: readonly (unknown)[], type: T): Vector<T>;
+export function vectorFromArray<T extends readonly unknown[]>(values: T): Vector<JavaScriptArrayDataType<T>>;
+/** Creates a Vector from a typed array via {@link makeVector}. */
+export function vectorFromArray<T extends TypedArray | BigIntArray>(data: T): Vector<TypedArrayDataType<T>>;
+
+export function vectorFromArray<T extends dtypes.DataType>(data: Data<T>): Vector<T>;
+export function vectorFromArray<T extends dtypes.DataType>(data: Vector<T>): Vector<T>;
+export function vectorFromArray<T extends dtypes.DataType>(data: DataProps<T>): Vector<T>;
+export function vectorFromArray<T extends TypedArray | BigIntArray | readonly unknown[]>(data: T): Vector<ArrayDataType<T>>;
+
+export function vectorFromArray(init: any, type?: dtypes.DataType) {
+    if (init instanceof Data || init instanceof Vector || init.type instanceof dtypes.DataType || ArrayBuffer.isView(init)) {
+        return makeVector(init as any);
+    }
+    const options: IterableBuilderOptions = { type: type ?? inferType(init), nullValues: [null] };
+    const chunks = [...builderThroughIterable(options)(init)];
+    const vector = chunks.length === 1 ? chunks[0] : chunks.reduce((a, b) => a.concat(b));
+    if (dtypes.DataType.isDictionary(vector.type)) {
+        return vector.memoize();
+    }
+    return vector;
+}
+
+/**
+ * Creates a {@link Table} from an array of objects.
+ *
+ * @param array A table of objects.
+ */
+export function tableFromJSON<T extends Record<string, unknown>>(array: T[]): Table<{ [P in keyof T]: JavaScriptDataType<T[P]> }> {
+    const vector = vectorFromArray(array) as Vector<dtypes.Struct<any>>;
+    const batch = new RecordBatch(new Schema(vector.type.children), vector.data[0]);
+    return new Table(batch);
+}
+
+/** @ignore */
+function inferType<T extends readonly unknown[]>(values: T): JavaScriptArrayDataType<T>;
+function inferType(value: readonly unknown[]): dtypes.DataType {
+    if (value.length === 0) { return new dtypes.Null; }
+    let nullsCount = 0;
+    let arraysCount = 0;
+    let objectsCount = 0;
+    let numbersCount = 0;
+    let stringsCount = 0;
+    let bigintsCount = 0;
+    let booleansCount = 0;
+    let datesCount = 0;
+
+    for (const val of value) {
+        if (val == null) { ++nullsCount; continue; }
+        switch (typeof val) {
+            case 'bigint': ++bigintsCount; continue;
+            case 'boolean': ++booleansCount; continue;
+            case 'number': ++numbersCount; continue;
+            case 'string': ++stringsCount; continue;
+            case 'object':
+                if (Array.isArray(val)) {
+                    ++arraysCount;
+                } else if (Object.prototype.toString.call(val) === '[object Date]') {
+                    ++datesCount;
+                } else {
+                    ++objectsCount;
+                }
+                continue;
+        }
+        throw new TypeError('Unable to infer Vector type from input values, explicit type declaration expected');
+    }
+
+    if (numbersCount + nullsCount === value.length) {
+        return new dtypes.Float64;
+    } else if (stringsCount + nullsCount === value.length) {
+        return new dtypes.Dictionary(new dtypes.Utf8, new dtypes.Int32);
+    } else if (bigintsCount + nullsCount === value.length) {
+        return new dtypes.Int64;
+    } else if (booleansCount + nullsCount === value.length) {
+        return new dtypes.Bool;
+    } else if (datesCount + nullsCount === value.length) {
+        return new dtypes.DateMillisecond;
+    } else if (arraysCount + nullsCount === value.length) {
+        const array = value as Array<unknown>[];
+        const childType = inferType(array[array.findIndex((ary) => ary != null)]);
+        if (array.every((ary) => ary == null || compareTypes(childType, inferType(ary)))) {
+            return new dtypes.List(new Field('', childType, true));
+        }
+    } else if (objectsCount + nullsCount === value.length) {
+        const fields = new Map<string, Field>();
+        for (const row of value as Record<string, unknown>[]) {
+            for (const key of Object.keys(row)) {
+                if (!fields.has(key) && row[key] != null) {
+                    // use the type inferred for the first instance of a found key
+                    fields.set(key, new Field(key, inferType([row[key]]), true));
+                }
+            }
+        }
+        return new dtypes.Struct([...fields.values()]);
+    }
+
+    throw new TypeError('Unable to infer Vector type from input values, explicit type declaration expected');
+}
+
+/**
+ * A set of options to create an Iterable or AsyncIterable `Builder` transform function.
+ * @see {@link builderThroughIterable}
+ * @see {@link builderThroughAsyncIterable}
+ */
+export interface IterableBuilderOptions<T extends dtypes.DataType = any, TNull = any> extends BuilderOptions<T, TNull> {
+    highWaterMark?: number;
+    queueingStrategy?: 'bytes' | 'count';
+    dictionaryHashFunction?: (value: any) => string | number;
+    valueToChildTypeId?: (builder: Builder<T, TNull>, value: any, offset: number) => number;
+}
+
+/** @ignore */
+type ThroughIterable<T extends dtypes.DataType = any, TNull = any> = (source: Iterable<T['TValue'] | TNull>) => IterableIterator<Vector<T>>;
+
+/**
+ * Transform a synchronous `Iterable` of arbitrary JavaScript values into a
+ * sequence of Arrow Vector<T> following the chunking semantics defined in
+ * the supplied `options` argument.
+ *
+ * This function returns a function that accepts an `Iterable` of values to
+ * transform. When called, this function returns an Iterator of `Vector<T>`.
+ *
+ * The resulting `Iterator<Vector<T>>` yields Vectors based on the
+ * `queueingStrategy` and `highWaterMark` specified in the `options` argument.
+ *
+ * * If `queueingStrategy` is `"count"` (or omitted), The `Iterator<Vector<T>>`
+ *   will flush the underlying `Builder` (and yield a new `Vector<T>`) once the
+ *   Builder's `length` reaches or exceeds the supplied `highWaterMark`.
+ * * If `queueingStrategy` is `"bytes"`, the `Iterator<Vector<T>>` will flush
+ *   the underlying `Builder` (and yield a new `Vector<T>`) once its `byteLength`
+ *   reaches or exceeds the supplied `highWaterMark`.
+ *
+ * @param {IterableBuilderOptions<T, TNull>} options An object of properties which determine the `Builder` to create and the chunking semantics to use.
+ * @returns A function which accepts a JavaScript `Iterable` of values to
+ *          write, and returns an `Iterator` that yields Vectors according
+ *          to the chunking semantics defined in the `options` argument.
+ * @nocollapse
+ */
+export function builderThroughIterable<T extends dtypes.DataType = any, TNull = any>(options: IterableBuilderOptions<T, TNull>) {
+    const { ['queueingStrategy']: queueingStrategy = 'count' } = options;
+    const { ['highWaterMark']: highWaterMark = queueingStrategy !== 'bytes' ? Number.POSITIVE_INFINITY : 2 ** 14 } = options;
+    const sizeProperty: 'length' | 'byteLength' = queueingStrategy !== 'bytes' ? 'length' : 'byteLength';
+    return function* (source: Iterable<T['TValue'] | TNull>) {
+        let numChunks = 0;
+        const builder = makeBuilder(options);
+        for (const value of source) {
+            if (builder.append(value)[sizeProperty] >= highWaterMark) {
+                ++numChunks && (yield builder.toVector());
+            }
+        }
+        if (builder.finish().length > 0 || numChunks === 0) {
+            yield builder.toVector();
+        }
+    } as ThroughIterable<T, TNull>;
+}
+
+/** @ignore */
+type ThroughAsyncIterable<T extends dtypes.DataType = any, TNull = any> = (source: Iterable<T['TValue'] | TNull> | AsyncIterable<T['TValue'] | TNull>) => AsyncIterableIterator<Vector<T>>;
+
+/**
+ * Transform an `AsyncIterable` of arbitrary JavaScript values into a
+ * sequence of Arrow Vector<T> following the chunking semantics defined in
+ * the supplied `options` argument.
+ *
+ * This function returns a function that accepts an `AsyncIterable` of values to
+ * transform. When called, this function returns an AsyncIterator of `Vector<T>`.
+ *
+ * The resulting `AsyncIterator<Vector<T>>` yields Vectors based on the
+ * `queueingStrategy` and `highWaterMark` specified in the `options` argument.
+ *
+ * * If `queueingStrategy` is `"count"` (or omitted), The `AsyncIterator<Vector<T>>`
+ *   will flush the underlying `Builder` (and yield a new `Vector<T>`) once the
+ *   Builder's `length` reaches or exceeds the supplied `highWaterMark`.
+ * * If `queueingStrategy` is `"bytes"`, the `AsyncIterator<Vector<T>>` will flush
+ *   the underlying `Builder` (and yield a new `Vector<T>`) once its `byteLength`
+ *   reaches or exceeds the supplied `highWaterMark`.
+ *
+ * @param {IterableBuilderOptions<T, TNull>} options An object of properties which determine the `Builder` to create and the chunking semantics to use.
+ * @returns A function which accepts a JavaScript `AsyncIterable` of values
+ *          to write, and returns an `AsyncIterator` that yields Vectors
+ *          according to the chunking semantics defined in the `options`
+ *          argument.
+ * @nocollapse
+ */
+export function builderThroughAsyncIterable<T extends dtypes.DataType = any, TNull = any>(options: IterableBuilderOptions<T, TNull>) {
+    const { ['queueingStrategy']: queueingStrategy = 'count' } = options;
+    const { ['highWaterMark']: highWaterMark = queueingStrategy !== 'bytes' ? Number.POSITIVE_INFINITY : 2 ** 14 } = options;
+    const sizeProperty: 'length' | 'byteLength' = queueingStrategy !== 'bytes' ? 'length' : 'byteLength';
+    return async function* (source: Iterable<T['TValue'] | TNull> | AsyncIterable<T['TValue'] | TNull>) {
+        let numChunks = 0;
+        const builder = makeBuilder(options);
+        for await (const value of source) {
+            if (builder.append(value)[sizeProperty] >= highWaterMark) {
+                ++numChunks && (yield builder.toVector());
+            }
+        }
+        if (builder.finish().length > 0 || numChunks === 0) {
+            yield builder.toVector();
+        }
+    } as ThroughAsyncIterable<T, TNull>;
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/binary.ts b/igv_component/node_modules/apache-arrow/src/fb/binary.ts
new file mode 100644
index 0000000000000000000000000000000000000000..55af5e8e8676c83a565284538435f8bab5c623c3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/binary.ts
@@ -0,0 +1,39 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+/**
+ * Opaque binary data
+ */
+export class Binary {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Binary {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsBinary(bb:flatbuffers.ByteBuffer, obj?:Binary):Binary {
+  return (obj || new Binary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsBinary(bb:flatbuffers.ByteBuffer, obj?:Binary):Binary {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Binary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static startBinary(builder:flatbuffers.Builder) {
+  builder.startObject(0);
+}
+
+static endBinary(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createBinary(builder:flatbuffers.Builder):flatbuffers.Offset {
+  Binary.startBinary(builder);
+  return Binary.endBinary(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/block.ts b/igv_component/node_modules/apache-arrow/src/fb/block.ts
new file mode 100644
index 0000000000000000000000000000000000000000..590ad4efcb885511c7cefcb09f77dd283d4b2bb4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/block.ts
@@ -0,0 +1,49 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class Block {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Block {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+/**
+ * Index to the start of the RecordBlock (note this is past the Message header)
+ */
+offset():flatbuffers.Long {
+  return this.bb!.readInt64(this.bb_pos);
+}
+
+/**
+ * Length of the metadata
+ */
+metaDataLength():number {
+  return this.bb!.readInt32(this.bb_pos + 8);
+}
+
+/**
+ * Length of the data (this is aligned so there can be a gap between this and
+ * the metadata).
+ */
+bodyLength():flatbuffers.Long {
+  return this.bb!.readInt64(this.bb_pos + 16);
+}
+
+static sizeOf():number {
+  return 24;
+}
+
+static createBlock(builder:flatbuffers.Builder, offset: flatbuffers.Long, metaDataLength: number, bodyLength: flatbuffers.Long):flatbuffers.Offset {
+  builder.prep(8, 24);
+  builder.writeInt64(bodyLength);
+  builder.pad(4);
+  builder.writeInt32(metaDataLength);
+  builder.writeInt64(offset);
+  return builder.offset();
+}
+
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/body-compression-method.ts b/igv_component/node_modules/apache-arrow/src/fb/body-compression-method.ts
new file mode 100644
index 0000000000000000000000000000000000000000..ef6302de7e24ee3cee0c9ef992206046e4b83e90
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/body-compression-method.ts
@@ -0,0 +1,20 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+/**
+ * Provided for forward compatibility in case we need to support different
+ * strategies for compressing the IPC message body (like whole-body
+ * compression rather than buffer-level) in the future
+ */
+export enum BodyCompressionMethod{
+  /**
+   * Each constituent buffer is first compressed with the indicated
+   * compressor, and then written with the uncompressed length in the first 8
+   * bytes as a 64-bit little-endian signed integer followed by the compressed
+   * buffer bytes (and then padding as required by the protocol). The
+   * uncompressed length may be set to -1 to indicate that the data that
+   * follows is not compressed, which can be useful for cases where
+   * compression does not yield appreciable savings.
+   */
+  BUFFER = 0
+}
+
diff --git a/igv_component/node_modules/apache-arrow/src/fb/body-compression.ts b/igv_component/node_modules/apache-arrow/src/fb/body-compression.ts
new file mode 100644
index 0000000000000000000000000000000000000000..68a13972659f18c9890d2ce318f0effaccefb5fb
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/body-compression.ts
@@ -0,0 +1,72 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { BodyCompressionMethod } from './body-compression-method.js';
+import { CompressionType } from './compression-type.js';
+
+
+/**
+ * Optional compression for the memory buffers constituting IPC message
+ * bodies. Intended for use with RecordBatch but could be used for other
+ * message types
+ */
+export class BodyCompression {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):BodyCompression {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsBodyCompression(bb:flatbuffers.ByteBuffer, obj?:BodyCompression):BodyCompression {
+  return (obj || new BodyCompression()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsBodyCompression(bb:flatbuffers.ByteBuffer, obj?:BodyCompression):BodyCompression {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new BodyCompression()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+/**
+ * Compressor library.
+ * For LZ4_FRAME, each compressed buffer must consist of a single frame.
+ */
+codec():CompressionType {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt8(this.bb_pos + offset) : CompressionType.LZ4_FRAME;
+}
+
+/**
+ * Indicates the way the record batch body was compressed
+ */
+method():BodyCompressionMethod {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.readInt8(this.bb_pos + offset) : BodyCompressionMethod.BUFFER;
+}
+
+static startBodyCompression(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addCodec(builder:flatbuffers.Builder, codec:CompressionType) {
+  builder.addFieldInt8(0, codec, CompressionType.LZ4_FRAME);
+}
+
+static addMethod(builder:flatbuffers.Builder, method:BodyCompressionMethod) {
+  builder.addFieldInt8(1, method, BodyCompressionMethod.BUFFER);
+}
+
+static endBodyCompression(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createBodyCompression(builder:flatbuffers.Builder, codec:CompressionType, method:BodyCompressionMethod):flatbuffers.Offset {
+  BodyCompression.startBodyCompression(builder);
+  BodyCompression.addCodec(builder, codec);
+  BodyCompression.addMethod(builder, method);
+  return BodyCompression.endBodyCompression(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/bool.ts b/igv_component/node_modules/apache-arrow/src/fb/bool.ts
new file mode 100644
index 0000000000000000000000000000000000000000..9798bd547f1c3e0f9819322bb2d8d996a5b5f739
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/bool.ts
@@ -0,0 +1,36 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class Bool {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Bool {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsBool(bb:flatbuffers.ByteBuffer, obj?:Bool):Bool {
+  return (obj || new Bool()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsBool(bb:flatbuffers.ByteBuffer, obj?:Bool):Bool {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Bool()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static startBool(builder:flatbuffers.Builder) {
+  builder.startObject(0);
+}
+
+static endBool(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createBool(builder:flatbuffers.Builder):flatbuffers.Offset {
+  Bool.startBool(builder);
+  return Bool.endBool(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/buffer.ts b/igv_component/node_modules/apache-arrow/src/fb/buffer.ts
new file mode 100644
index 0000000000000000000000000000000000000000..c2dffb9898617794b1b4fdc751d16cd6e5cdc253
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/buffer.ts
@@ -0,0 +1,48 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+/**
+ * ----------------------------------------------------------------------
+ * A Buffer represents a single contiguous memory segment
+ */
+export class Buffer {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Buffer {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+/**
+ * The relative offset into the shared memory page where the bytes for this
+ * buffer starts
+ */
+offset():flatbuffers.Long {
+  return this.bb!.readInt64(this.bb_pos);
+}
+
+/**
+ * The absolute length (in bytes) of the memory buffer. The memory is found
+ * from offset (inclusive) to offset + length (non-inclusive). When building
+ * messages using the encapsulated IPC message, padding bytes may be written
+ * after a buffer, but such padding bytes do not need to be accounted for in
+ * the size here.
+ */
+length():flatbuffers.Long {
+  return this.bb!.readInt64(this.bb_pos + 8);
+}
+
+static sizeOf():number {
+  return 16;
+}
+
+static createBuffer(builder:flatbuffers.Builder, offset: flatbuffers.Long, length: flatbuffers.Long):flatbuffers.Offset {
+  builder.prep(8, 16);
+  builder.writeInt64(length);
+  builder.writeInt64(offset);
+  return builder.offset();
+}
+
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/compression-type.ts b/igv_component/node_modules/apache-arrow/src/fb/compression-type.ts
new file mode 100644
index 0000000000000000000000000000000000000000..1acec189958096ec72872ce285b4f3ac0cf64d55
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/compression-type.ts
@@ -0,0 +1,7 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+export enum CompressionType{
+  LZ4_FRAME = 0,
+  ZSTD = 1
+}
+
diff --git a/igv_component/node_modules/apache-arrow/src/fb/date-unit.ts b/igv_component/node_modules/apache-arrow/src/fb/date-unit.ts
new file mode 100644
index 0000000000000000000000000000000000000000..bb7ff3045db3bcffd63bfbcf7177942e2440fb59
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/date-unit.ts
@@ -0,0 +1,7 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+export enum DateUnit{
+  DAY = 0,
+  MILLISECOND = 1
+}
+
diff --git a/igv_component/node_modules/apache-arrow/src/fb/date.ts b/igv_component/node_modules/apache-arrow/src/fb/date.ts
new file mode 100644
index 0000000000000000000000000000000000000000..fbc5292190d660a5ad4e1ec1d4f0877bfc6414f9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/date.ts
@@ -0,0 +1,57 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { DateUnit } from './date-unit.js';
+
+
+/**
+ * Date is either a 32-bit or 64-bit signed integer type representing an
+ * elapsed time since UNIX epoch (1970-01-01), stored in either of two units:
+ *
+ * * Milliseconds (64 bits) indicating UNIX time elapsed since the epoch (no
+ *   leap seconds), where the values are evenly divisible by 86400000
+ * * Days (32 bits) since the UNIX epoch
+ */
+export class Date {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Date {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsDate(bb:flatbuffers.ByteBuffer, obj?:Date):Date {
+  return (obj || new Date()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsDate(bb:flatbuffers.ByteBuffer, obj?:Date):Date {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Date()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+unit():DateUnit {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt16(this.bb_pos + offset) : DateUnit.MILLISECOND;
+}
+
+static startDate(builder:flatbuffers.Builder) {
+  builder.startObject(1);
+}
+
+static addUnit(builder:flatbuffers.Builder, unit:DateUnit) {
+  builder.addFieldInt16(0, unit, DateUnit.MILLISECOND);
+}
+
+static endDate(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createDate(builder:flatbuffers.Builder, unit:DateUnit):flatbuffers.Offset {
+  Date.startDate(builder);
+  Date.addUnit(builder, unit);
+  return Date.endDate(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/decimal.ts b/igv_component/node_modules/apache-arrow/src/fb/decimal.ts
new file mode 100644
index 0000000000000000000000000000000000000000..40a03e684fa6763e7e3ccdadca66917ab7f311cb
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/decimal.ts
@@ -0,0 +1,82 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+/**
+ * Exact decimal value represented as an integer value in two's
+ * complement. Currently only 128-bit (16-byte) and 256-bit (32-byte) integers
+ * are used. The representation uses the endianness indicated
+ * in the Schema.
+ */
+export class Decimal {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Decimal {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsDecimal(bb:flatbuffers.ByteBuffer, obj?:Decimal):Decimal {
+  return (obj || new Decimal()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsDecimal(bb:flatbuffers.ByteBuffer, obj?:Decimal):Decimal {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Decimal()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+/**
+ * Total number of decimal digits
+ */
+precision():number {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+/**
+ * Number of digits after the decimal point "."
+ */
+scale():number {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+/**
+ * Number of bits per value. The only accepted widths are 128 and 256.
+ * We use bitWidth for consistency with Int::bitWidth.
+ */
+bitWidth():number {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 128;
+}
+
+static startDecimal(builder:flatbuffers.Builder) {
+  builder.startObject(3);
+}
+
+static addPrecision(builder:flatbuffers.Builder, precision:number) {
+  builder.addFieldInt32(0, precision, 0);
+}
+
+static addScale(builder:flatbuffers.Builder, scale:number) {
+  builder.addFieldInt32(1, scale, 0);
+}
+
+static addBitWidth(builder:flatbuffers.Builder, bitWidth:number) {
+  builder.addFieldInt32(2, bitWidth, 128);
+}
+
+static endDecimal(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createDecimal(builder:flatbuffers.Builder, precision:number, scale:number, bitWidth:number):flatbuffers.Offset {
+  Decimal.startDecimal(builder);
+  Decimal.addPrecision(builder, precision);
+  Decimal.addScale(builder, scale);
+  Decimal.addBitWidth(builder, bitWidth);
+  return Decimal.endDecimal(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/dictionary-batch.ts b/igv_component/node_modules/apache-arrow/src/fb/dictionary-batch.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6dcfb466790460ad13af3aa1fe1d2d9456bccc0b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/dictionary-batch.ts
@@ -0,0 +1,75 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { RecordBatch } from './record-batch.js';
+
+
+/**
+ * For sending dictionary encoding information. Any Field can be
+ * dictionary-encoded, but in this case none of its children may be
+ * dictionary-encoded.
+ * There is one vector / column per dictionary, but that vector / column
+ * may be spread across multiple dictionary batches by using the isDelta
+ * flag
+ */
+export class DictionaryBatch {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):DictionaryBatch {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsDictionaryBatch(bb:flatbuffers.ByteBuffer, obj?:DictionaryBatch):DictionaryBatch {
+  return (obj || new DictionaryBatch()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsDictionaryBatch(bb:flatbuffers.ByteBuffer, obj?:DictionaryBatch):DictionaryBatch {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new DictionaryBatch()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+id():flatbuffers.Long {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt64(this.bb_pos + offset) : this.bb!.createLong(0, 0);
+}
+
+data(obj?:RecordBatch):RecordBatch|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? (obj || new RecordBatch()).__init(this.bb!.__indirect(this.bb_pos + offset), this.bb!) : null;
+}
+
+/**
+ * If isDelta is true the values in the dictionary are to be appended to a
+ * dictionary with the indicated id. If isDelta is false this dictionary
+ * should replace the existing dictionary.
+ */
+isDelta():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
+static startDictionaryBatch(builder:flatbuffers.Builder) {
+  builder.startObject(3);
+}
+
+static addId(builder:flatbuffers.Builder, id:flatbuffers.Long) {
+  builder.addFieldInt64(0, id, builder.createLong(0, 0));
+}
+
+static addData(builder:flatbuffers.Builder, dataOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, dataOffset, 0);
+}
+
+static addIsDelta(builder:flatbuffers.Builder, isDelta:boolean) {
+  builder.addFieldInt8(2, +isDelta, +false);
+}
+
+static endDictionaryBatch(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/dictionary-encoding.ts b/igv_component/node_modules/apache-arrow/src/fb/dictionary-encoding.ts
new file mode 100644
index 0000000000000000000000000000000000000000..44364702acc9895e0b01b483908dbb35103a75a0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/dictionary-encoding.ts
@@ -0,0 +1,90 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { DictionaryKind } from './dictionary-kind.js';
+import { Int } from './int.js';
+
+
+export class DictionaryEncoding {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):DictionaryEncoding {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsDictionaryEncoding(bb:flatbuffers.ByteBuffer, obj?:DictionaryEncoding):DictionaryEncoding {
+  return (obj || new DictionaryEncoding()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsDictionaryEncoding(bb:flatbuffers.ByteBuffer, obj?:DictionaryEncoding):DictionaryEncoding {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new DictionaryEncoding()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+/**
+ * The known dictionary id in the application where this data is used. In
+ * the file or streaming formats, the dictionary ids are found in the
+ * DictionaryBatch messages
+ */
+id():flatbuffers.Long {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt64(this.bb_pos + offset) : this.bb!.createLong(0, 0);
+}
+
+/**
+ * The dictionary indices are constrained to be non-negative integers. If
+ * this field is null, the indices must be signed int32. To maximize
+ * cross-language compatibility and performance, implementations are
+ * recommended to prefer signed integer types over unsigned integer types
+ * and to avoid uint64 indices unless they are required by an application.
+ */
+indexType(obj?:Int):Int|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? (obj || new Int()).__init(this.bb!.__indirect(this.bb_pos + offset), this.bb!) : null;
+}
+
+/**
+ * By default, dictionaries are not ordered, or the order does not have
+ * semantic meaning. In some statistical, applications, dictionary-encoding
+ * is used to represent ordered categorical data, and we provide a way to
+ * preserve that metadata here
+ */
+isOrdered():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
+dictionaryKind():DictionaryKind {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.readInt16(this.bb_pos + offset) : DictionaryKind.DenseArray;
+}
+
+static startDictionaryEncoding(builder:flatbuffers.Builder) {
+  builder.startObject(4);
+}
+
+static addId(builder:flatbuffers.Builder, id:flatbuffers.Long) {
+  builder.addFieldInt64(0, id, builder.createLong(0, 0));
+}
+
+static addIndexType(builder:flatbuffers.Builder, indexTypeOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, indexTypeOffset, 0);
+}
+
+static addIsOrdered(builder:flatbuffers.Builder, isOrdered:boolean) {
+  builder.addFieldInt8(2, +isOrdered, +false);
+}
+
+static addDictionaryKind(builder:flatbuffers.Builder, dictionaryKind:DictionaryKind) {
+  builder.addFieldInt16(3, dictionaryKind, DictionaryKind.DenseArray);
+}
+
+static endDictionaryEncoding(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/dictionary-kind.ts b/igv_component/node_modules/apache-arrow/src/fb/dictionary-kind.ts
new file mode 100644
index 0000000000000000000000000000000000000000..90d20a9b38366ef365c5b092e8edff314b7cf4f6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/dictionary-kind.ts
@@ -0,0 +1,13 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+/**
+ * ----------------------------------------------------------------------
+ * Dictionary encoding metadata
+ * Maintained for forwards compatibility, in the future
+ * Dictionaries might be explicit maps between integers and values
+ * allowing for non-contiguous index values
+ */
+export enum DictionaryKind{
+  DenseArray = 0
+}
+
diff --git a/igv_component/node_modules/apache-arrow/src/fb/duration.ts b/igv_component/node_modules/apache-arrow/src/fb/duration.ts
new file mode 100644
index 0000000000000000000000000000000000000000..547a7bc5e26b48ff7b6a5fa0467780d895f5fb56
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/duration.ts
@@ -0,0 +1,49 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { TimeUnit } from './time-unit.js';
+
+
+export class Duration {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Duration {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsDuration(bb:flatbuffers.ByteBuffer, obj?:Duration):Duration {
+  return (obj || new Duration()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsDuration(bb:flatbuffers.ByteBuffer, obj?:Duration):Duration {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Duration()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+unit():TimeUnit {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt16(this.bb_pos + offset) : TimeUnit.MILLISECOND;
+}
+
+static startDuration(builder:flatbuffers.Builder) {
+  builder.startObject(1);
+}
+
+static addUnit(builder:flatbuffers.Builder, unit:TimeUnit) {
+  builder.addFieldInt16(0, unit, TimeUnit.MILLISECOND);
+}
+
+static endDuration(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createDuration(builder:flatbuffers.Builder, unit:TimeUnit):flatbuffers.Offset {
+  Duration.startDuration(builder);
+  Duration.addUnit(builder, unit);
+  return Duration.endDuration(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/endianness.ts b/igv_component/node_modules/apache-arrow/src/fb/endianness.ts
new file mode 100644
index 0000000000000000000000000000000000000000..55f7e4b8ce022ddb998b96ba112511fd7c87e688
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/endianness.ts
@@ -0,0 +1,11 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+/**
+ * ----------------------------------------------------------------------
+ * Endianness of the platform producing the data
+ */
+export enum Endianness{
+  Little = 0,
+  Big = 1
+}
+
diff --git a/igv_component/node_modules/apache-arrow/src/fb/feature.ts b/igv_component/node_modules/apache-arrow/src/fb/feature.ts
new file mode 100644
index 0000000000000000000000000000000000000000..41f307562f868997a8e512aaf5871651b98abca4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/feature.ts
@@ -0,0 +1,41 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+/**
+ * Represents Arrow Features that might not have full support
+ * within implementations. This is intended to be used in
+ * two scenarios:
+ *  1.  A mechanism for readers of Arrow Streams
+ *      and files to understand that the stream or file makes
+ *      use of a feature that isn't supported or unknown to
+ *      the implementation (and therefore can meet the Arrow
+ *      forward compatibility guarantees).
+ *  2.  A means of negotiating between a client and server
+ *      what features a stream is allowed to use. The enums
+ *      values here are intented to represent higher level
+ *      features, additional details maybe negotiated
+ *      with key-value pairs specific to the protocol.
+ *
+ * Enums added to this list should be assigned power-of-two values
+ * to facilitate exchanging and comparing bitmaps for supported
+ * features.
+ */
+export enum Feature{
+  /**
+   * Needed to make flatbuffers happy.
+   */
+  UNUSED = 0,
+
+  /**
+   * The stream makes use of multiple full dictionaries with the
+   * same ID and assumes clients implement dictionary replacement
+   * correctly.
+   */
+  DICTIONARY_REPLACEMENT = 1,
+
+  /**
+   * The stream makes use of compressed bodies as described
+   * in Message.fbs.
+   */
+  COMPRESSED_BODY = 2
+}
+
diff --git a/igv_component/node_modules/apache-arrow/src/fb/field-node.ts b/igv_component/node_modules/apache-arrow/src/fb/field-node.ts
new file mode 100644
index 0000000000000000000000000000000000000000..7e83a7b9c177c8f3bed3c1d06fd4742f9ab390ea
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/field-node.ts
@@ -0,0 +1,53 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+/**
+ * ----------------------------------------------------------------------
+ * Data structures for describing a table row batch (a collection of
+ * equal-length Arrow arrays)
+ * Metadata about a field at some level of a nested type tree (but not
+ * its children).
+ *
+ * For example, a List<Int16> with values `[[1, 2, 3], null, [4], [5, 6], null]`
+ * would have {length: 5, null_count: 2} for its List node, and {length: 6,
+ * null_count: 0} for its Int16 node, as separate FieldNode structs
+ */
+export class FieldNode {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):FieldNode {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+/**
+ * The number of value slots in the Arrow array at this level of a nested
+ * tree
+ */
+length():flatbuffers.Long {
+  return this.bb!.readInt64(this.bb_pos);
+}
+
+/**
+ * The number of observed nulls. Fields with null_count == 0 may choose not
+ * to write their physical validity bitmap out as a materialized buffer,
+ * instead setting the length of the bitmap buffer to 0.
+ */
+nullCount():flatbuffers.Long {
+  return this.bb!.readInt64(this.bb_pos + 8);
+}
+
+static sizeOf():number {
+  return 16;
+}
+
+static createFieldNode(builder:flatbuffers.Builder, length: flatbuffers.Long, null_count: flatbuffers.Long):flatbuffers.Offset {
+  builder.prep(8, 16);
+  builder.writeInt64(null_count);
+  builder.writeInt64(length);
+  return builder.offset();
+}
+
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/field.ts b/igv_component/node_modules/apache-arrow/src/fb/field.ts
new file mode 100644
index 0000000000000000000000000000000000000000..21215415fcbb27dabe29105222315f2bac652a74
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/field.ts
@@ -0,0 +1,161 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { DictionaryEncoding } from './dictionary-encoding.js';
+import { KeyValue } from './key-value.js';
+import { Type } from './type.js';
+
+
+/**
+ * ----------------------------------------------------------------------
+ * A field represents a named column in a record / row batch or child of a
+ * nested type.
+ */
+export class Field {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Field {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsField(bb:flatbuffers.ByteBuffer, obj?:Field):Field {
+  return (obj || new Field()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsField(bb:flatbuffers.ByteBuffer, obj?:Field):Field {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Field()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+/**
+ * Name is not required, in i.e. a List
+ */
+name():string|null
+name(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+name(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+/**
+ * Whether or not this field can contain nulls. Should be true in general.
+ */
+nullable():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
+typeType():Type {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.readUint8(this.bb_pos + offset) : Type.NONE;
+}
+
+/**
+ * This is the type of the decoded value if the field is dictionary encoded.
+ */
+// @ts-ignore
+type<T extends flatbuffers.Table>(obj:any):any|null {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.__union(obj, this.bb_pos + offset) : null;
+}
+
+/**
+ * Present only if the field is dictionary encoded.
+ */
+dictionary(obj?:DictionaryEncoding):DictionaryEncoding|null {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? (obj || new DictionaryEncoding()).__init(this.bb!.__indirect(this.bb_pos + offset), this.bb!) : null;
+}
+
+/**
+ * children apply only to nested data types like Struct, List and Union. For
+ * primitive types children will have length 0.
+ */
+children(index: number, obj?:Field):Field|null {
+  const offset = this.bb!.__offset(this.bb_pos, 14);
+  return offset ? (obj || new Field()).__init(this.bb!.__indirect(this.bb!.__vector(this.bb_pos + offset) + index * 4), this.bb!) : null;
+}
+
+childrenLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 14);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+/**
+ * User-defined metadata
+ */
+customMetadata(index: number, obj?:KeyValue):KeyValue|null {
+  const offset = this.bb!.__offset(this.bb_pos, 16);
+  return offset ? (obj || new KeyValue()).__init(this.bb!.__indirect(this.bb!.__vector(this.bb_pos + offset) + index * 4), this.bb!) : null;
+}
+
+customMetadataLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 16);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+static startField(builder:flatbuffers.Builder) {
+  builder.startObject(7);
+}
+
+static addName(builder:flatbuffers.Builder, nameOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, nameOffset, 0);
+}
+
+static addNullable(builder:flatbuffers.Builder, nullable:boolean) {
+  builder.addFieldInt8(1, +nullable, +false);
+}
+
+static addTypeType(builder:flatbuffers.Builder, typeType:Type) {
+  builder.addFieldInt8(2, typeType, Type.NONE);
+}
+
+static addType(builder:flatbuffers.Builder, typeOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(3, typeOffset, 0);
+}
+
+static addDictionary(builder:flatbuffers.Builder, dictionaryOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(4, dictionaryOffset, 0);
+}
+
+static addChildren(builder:flatbuffers.Builder, childrenOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(5, childrenOffset, 0);
+}
+
+static createChildrenVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startChildrenVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static addCustomMetadata(builder:flatbuffers.Builder, customMetadataOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(6, customMetadataOffset, 0);
+}
+
+static createCustomMetadataVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startCustomMetadataVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static endField(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/fixed-size-binary.ts b/igv_component/node_modules/apache-arrow/src/fb/fixed-size-binary.ts
new file mode 100644
index 0000000000000000000000000000000000000000..897474e4e52dc2e9c17740676baf3d3732229537
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/fixed-size-binary.ts
@@ -0,0 +1,49 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class FixedSizeBinary {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):FixedSizeBinary {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsFixedSizeBinary(bb:flatbuffers.ByteBuffer, obj?:FixedSizeBinary):FixedSizeBinary {
+  return (obj || new FixedSizeBinary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsFixedSizeBinary(bb:flatbuffers.ByteBuffer, obj?:FixedSizeBinary):FixedSizeBinary {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new FixedSizeBinary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+/**
+ * Number of bytes per value
+ */
+byteWidth():number {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+static startFixedSizeBinary(builder:flatbuffers.Builder) {
+  builder.startObject(1);
+}
+
+static addByteWidth(builder:flatbuffers.Builder, byteWidth:number) {
+  builder.addFieldInt32(0, byteWidth, 0);
+}
+
+static endFixedSizeBinary(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createFixedSizeBinary(builder:flatbuffers.Builder, byteWidth:number):flatbuffers.Offset {
+  FixedSizeBinary.startFixedSizeBinary(builder);
+  FixedSizeBinary.addByteWidth(builder, byteWidth);
+  return FixedSizeBinary.endFixedSizeBinary(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/fixed-size-list.ts b/igv_component/node_modules/apache-arrow/src/fb/fixed-size-list.ts
new file mode 100644
index 0000000000000000000000000000000000000000..8e369349a5b2b8ceaf8ed2adc43b84a2c0e6d2d5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/fixed-size-list.ts
@@ -0,0 +1,49 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class FixedSizeList {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):FixedSizeList {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsFixedSizeList(bb:flatbuffers.ByteBuffer, obj?:FixedSizeList):FixedSizeList {
+  return (obj || new FixedSizeList()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsFixedSizeList(bb:flatbuffers.ByteBuffer, obj?:FixedSizeList):FixedSizeList {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new FixedSizeList()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+/**
+ * Number of list items per value
+ */
+listSize():number {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+static startFixedSizeList(builder:flatbuffers.Builder) {
+  builder.startObject(1);
+}
+
+static addListSize(builder:flatbuffers.Builder, listSize:number) {
+  builder.addFieldInt32(0, listSize, 0);
+}
+
+static endFixedSizeList(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createFixedSizeList(builder:flatbuffers.Builder, listSize:number):flatbuffers.Offset {
+  FixedSizeList.startFixedSizeList(builder);
+  FixedSizeList.addListSize(builder, listSize);
+  return FixedSizeList.endFixedSizeList(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/floating-point.ts b/igv_component/node_modules/apache-arrow/src/fb/floating-point.ts
new file mode 100644
index 0000000000000000000000000000000000000000..60532aa2bee6e0df04355d6ee939995a4c44a67f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/floating-point.ts
@@ -0,0 +1,49 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { Precision } from './precision.js';
+
+
+export class FloatingPoint {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):FloatingPoint {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsFloatingPoint(bb:flatbuffers.ByteBuffer, obj?:FloatingPoint):FloatingPoint {
+  return (obj || new FloatingPoint()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsFloatingPoint(bb:flatbuffers.ByteBuffer, obj?:FloatingPoint):FloatingPoint {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new FloatingPoint()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+precision():Precision {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt16(this.bb_pos + offset) : Precision.HALF;
+}
+
+static startFloatingPoint(builder:flatbuffers.Builder) {
+  builder.startObject(1);
+}
+
+static addPrecision(builder:flatbuffers.Builder, precision:Precision) {
+  builder.addFieldInt16(0, precision, Precision.HALF);
+}
+
+static endFloatingPoint(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createFloatingPoint(builder:flatbuffers.Builder, precision:Precision):flatbuffers.Offset {
+  FloatingPoint.startFloatingPoint(builder);
+  FloatingPoint.addPrecision(builder, precision);
+  return FloatingPoint.endFloatingPoint(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/footer.ts b/igv_component/node_modules/apache-arrow/src/fb/footer.ts
new file mode 100644
index 0000000000000000000000000000000000000000..f5ac80df14016018fac0c3886f172327fcad249a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/footer.ts
@@ -0,0 +1,134 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { Block } from './block.js';
+import { KeyValue } from './key-value.js';
+import { MetadataVersion } from './metadata-version.js';
+import { Schema } from './schema.js';
+
+
+/**
+ * ----------------------------------------------------------------------
+ * Arrow File metadata
+ *
+ */
+export class Footer {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Footer {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsFooter(bb:flatbuffers.ByteBuffer, obj?:Footer):Footer {
+  return (obj || new Footer()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsFooter(bb:flatbuffers.ByteBuffer, obj?:Footer):Footer {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Footer()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+version():MetadataVersion {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt16(this.bb_pos + offset) : MetadataVersion.V1;
+}
+
+schema(obj?:Schema):Schema|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? (obj || new Schema()).__init(this.bb!.__indirect(this.bb_pos + offset), this.bb!) : null;
+}
+
+dictionaries(index: number, obj?:Block):Block|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? (obj || new Block()).__init(this.bb!.__vector(this.bb_pos + offset) + index * 24, this.bb!) : null;
+}
+
+dictionariesLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+recordBatches(index: number, obj?:Block):Block|null {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? (obj || new Block()).__init(this.bb!.__vector(this.bb_pos + offset) + index * 24, this.bb!) : null;
+}
+
+recordBatchesLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+/**
+ * User-defined metadata
+ */
+customMetadata(index: number, obj?:KeyValue):KeyValue|null {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? (obj || new KeyValue()).__init(this.bb!.__indirect(this.bb!.__vector(this.bb_pos + offset) + index * 4), this.bb!) : null;
+}
+
+customMetadataLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+static startFooter(builder:flatbuffers.Builder) {
+  builder.startObject(5);
+}
+
+static addVersion(builder:flatbuffers.Builder, version:MetadataVersion) {
+  builder.addFieldInt16(0, version, MetadataVersion.V1);
+}
+
+static addSchema(builder:flatbuffers.Builder, schemaOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, schemaOffset, 0);
+}
+
+static addDictionaries(builder:flatbuffers.Builder, dictionariesOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, dictionariesOffset, 0);
+}
+
+static startDictionariesVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(24, numElems, 8);
+}
+
+static addRecordBatches(builder:flatbuffers.Builder, recordBatchesOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(3, recordBatchesOffset, 0);
+}
+
+static startRecordBatchesVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(24, numElems, 8);
+}
+
+static addCustomMetadata(builder:flatbuffers.Builder, customMetadataOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(4, customMetadataOffset, 0);
+}
+
+static createCustomMetadataVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startCustomMetadataVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static endFooter(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static finishFooterBuffer(builder:flatbuffers.Builder, offset:flatbuffers.Offset) {
+  builder.finish(offset);
+}
+
+static finishSizePrefixedFooterBuffer(builder:flatbuffers.Builder, offset:flatbuffers.Offset) {
+  builder.finish(offset, undefined, true);
+}
+
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/int.ts b/igv_component/node_modules/apache-arrow/src/fb/int.ts
new file mode 100644
index 0000000000000000000000000000000000000000..52b00c982b8036e51ed92ec07de5b68119898393
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/int.ts
@@ -0,0 +1,56 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class Int {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Int {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsInt(bb:flatbuffers.ByteBuffer, obj?:Int):Int {
+  return (obj || new Int()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsInt(bb:flatbuffers.ByteBuffer, obj?:Int):Int {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Int()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+bitWidth():number {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 0;
+}
+
+isSigned():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
+static startInt(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addBitWidth(builder:flatbuffers.Builder, bitWidth:number) {
+  builder.addFieldInt32(0, bitWidth, 0);
+}
+
+static addIsSigned(builder:flatbuffers.Builder, isSigned:boolean) {
+  builder.addFieldInt8(1, +isSigned, +false);
+}
+
+static endInt(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createInt(builder:flatbuffers.Builder, bitWidth:number, isSigned:boolean):flatbuffers.Offset {
+  Int.startInt(builder);
+  Int.addBitWidth(builder, bitWidth);
+  Int.addIsSigned(builder, isSigned);
+  return Int.endInt(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/interval-unit.ts b/igv_component/node_modules/apache-arrow/src/fb/interval-unit.ts
new file mode 100644
index 0000000000000000000000000000000000000000..844a213701fb98a9172200e87406649f04a9c326
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/interval-unit.ts
@@ -0,0 +1,8 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+export enum IntervalUnit{
+  YEAR_MONTH = 0,
+  DAY_TIME = 1,
+  MONTH_DAY_NANO = 2
+}
+
diff --git a/igv_component/node_modules/apache-arrow/src/fb/interval.ts b/igv_component/node_modules/apache-arrow/src/fb/interval.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a98d586a5ebe73cef4ef20c33f39e9d5a30459f8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/interval.ts
@@ -0,0 +1,49 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { IntervalUnit } from './interval-unit.js';
+
+
+export class Interval {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Interval {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsInterval(bb:flatbuffers.ByteBuffer, obj?:Interval):Interval {
+  return (obj || new Interval()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsInterval(bb:flatbuffers.ByteBuffer, obj?:Interval):Interval {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Interval()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+unit():IntervalUnit {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt16(this.bb_pos + offset) : IntervalUnit.YEAR_MONTH;
+}
+
+static startInterval(builder:flatbuffers.Builder) {
+  builder.startObject(1);
+}
+
+static addUnit(builder:flatbuffers.Builder, unit:IntervalUnit) {
+  builder.addFieldInt16(0, unit, IntervalUnit.YEAR_MONTH);
+}
+
+static endInterval(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createInterval(builder:flatbuffers.Builder, unit:IntervalUnit):flatbuffers.Offset {
+  Interval.startInterval(builder);
+  Interval.addUnit(builder, unit);
+  return Interval.endInterval(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/key-value.ts b/igv_component/node_modules/apache-arrow/src/fb/key-value.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e67a6af908449dec8c3d6f72ff1f039639846bec
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/key-value.ts
@@ -0,0 +1,65 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+/**
+ * ----------------------------------------------------------------------
+ * user defined key value pairs to add custom metadata to arrow
+ * key namespacing is the responsibility of the user
+ */
+export class KeyValue {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):KeyValue {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsKeyValue(bb:flatbuffers.ByteBuffer, obj?:KeyValue):KeyValue {
+  return (obj || new KeyValue()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsKeyValue(bb:flatbuffers.ByteBuffer, obj?:KeyValue):KeyValue {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new KeyValue()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+key():string|null
+key(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+key(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+value():string|null
+value(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+value(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+static startKeyValue(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addKey(builder:flatbuffers.Builder, keyOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, keyOffset, 0);
+}
+
+static addValue(builder:flatbuffers.Builder, valueOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, valueOffset, 0);
+}
+
+static endKeyValue(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createKeyValue(builder:flatbuffers.Builder, keyOffset:flatbuffers.Offset, valueOffset:flatbuffers.Offset):flatbuffers.Offset {
+  KeyValue.startKeyValue(builder);
+  KeyValue.addKey(builder, keyOffset);
+  KeyValue.addValue(builder, valueOffset);
+  return KeyValue.endKeyValue(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/large-binary.ts b/igv_component/node_modules/apache-arrow/src/fb/large-binary.ts
new file mode 100644
index 0000000000000000000000000000000000000000..50003b26cd6fdd9f979b21850f422811ae6f5c06
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/large-binary.ts
@@ -0,0 +1,40 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+/**
+ * Same as Binary, but with 64-bit offsets, allowing to represent
+ * extremely large data values.
+ */
+export class LargeBinary {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):LargeBinary {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsLargeBinary(bb:flatbuffers.ByteBuffer, obj?:LargeBinary):LargeBinary {
+  return (obj || new LargeBinary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsLargeBinary(bb:flatbuffers.ByteBuffer, obj?:LargeBinary):LargeBinary {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new LargeBinary()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static startLargeBinary(builder:flatbuffers.Builder) {
+  builder.startObject(0);
+}
+
+static endLargeBinary(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createLargeBinary(builder:flatbuffers.Builder):flatbuffers.Offset {
+  LargeBinary.startLargeBinary(builder);
+  return LargeBinary.endLargeBinary(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/large-list.ts b/igv_component/node_modules/apache-arrow/src/fb/large-list.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2a39d585a9ff673eefef19b1172a737a1733539f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/large-list.ts
@@ -0,0 +1,40 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+/**
+ * Same as List, but with 64-bit offsets, allowing to represent
+ * extremely large data values.
+ */
+export class LargeList {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):LargeList {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsLargeList(bb:flatbuffers.ByteBuffer, obj?:LargeList):LargeList {
+  return (obj || new LargeList()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsLargeList(bb:flatbuffers.ByteBuffer, obj?:LargeList):LargeList {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new LargeList()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static startLargeList(builder:flatbuffers.Builder) {
+  builder.startObject(0);
+}
+
+static endLargeList(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createLargeList(builder:flatbuffers.Builder):flatbuffers.Offset {
+  LargeList.startLargeList(builder);
+  return LargeList.endLargeList(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/large-utf8.ts b/igv_component/node_modules/apache-arrow/src/fb/large-utf8.ts
new file mode 100644
index 0000000000000000000000000000000000000000..974acc18c010fc0708bbe5b6b811eba4918e9db6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/large-utf8.ts
@@ -0,0 +1,40 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+/**
+ * Same as Utf8, but with 64-bit offsets, allowing to represent
+ * extremely large data values.
+ */
+export class LargeUtf8 {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):LargeUtf8 {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsLargeUtf8(bb:flatbuffers.ByteBuffer, obj?:LargeUtf8):LargeUtf8 {
+  return (obj || new LargeUtf8()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsLargeUtf8(bb:flatbuffers.ByteBuffer, obj?:LargeUtf8):LargeUtf8 {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new LargeUtf8()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static startLargeUtf8(builder:flatbuffers.Builder) {
+  builder.startObject(0);
+}
+
+static endLargeUtf8(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createLargeUtf8(builder:flatbuffers.Builder):flatbuffers.Offset {
+  LargeUtf8.startLargeUtf8(builder);
+  return LargeUtf8.endLargeUtf8(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/list.ts b/igv_component/node_modules/apache-arrow/src/fb/list.ts
new file mode 100644
index 0000000000000000000000000000000000000000..872d0b14def4fcf208e18b282f9ffe51ae69ca19
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/list.ts
@@ -0,0 +1,36 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+export class List {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):List {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsList(bb:flatbuffers.ByteBuffer, obj?:List):List {
+  return (obj || new List()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsList(bb:flatbuffers.ByteBuffer, obj?:List):List {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new List()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static startList(builder:flatbuffers.Builder) {
+  builder.startObject(0);
+}
+
+static endList(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createList(builder:flatbuffers.Builder):flatbuffers.Offset {
+  List.startList(builder);
+  return List.endList(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/map.ts b/igv_component/node_modules/apache-arrow/src/fb/map.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b47b51dbbb1ca593004939cb74a810c350436d62
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/map.ts
@@ -0,0 +1,76 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+/**
+ * A Map is a logical nested type that is represented as
+ *
+ * List<entries: Struct<key: K, value: V>>
+ *
+ * In this layout, the keys and values are each respectively contiguous. We do
+ * not constrain the key and value types, so the application is responsible
+ * for ensuring that the keys are hashable and unique. Whether the keys are sorted
+ * may be set in the metadata for this field.
+ *
+ * In a field with Map type, the field has a child Struct field, which then
+ * has two children: key type and the second the value type. The names of the
+ * child fields may be respectively "entries", "key", and "value", but this is
+ * not enforced.
+ *
+ * Map
+ * ```text
+ *   - child[0] entries: Struct
+ *     - child[0] key: K
+ *     - child[1] value: V
+ * ```
+ * Neither the "entries" field nor the "key" field may be nullable.
+ *
+ * The metadata is structured so that Arrow systems without special handling
+ * for Map can make Map an alias for List. The "layout" attribute for the Map
+ * field must have the same contents as a List.
+ */
+export class Map {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Map {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsMap(bb:flatbuffers.ByteBuffer, obj?:Map):Map {
+  return (obj || new Map()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsMap(bb:flatbuffers.ByteBuffer, obj?:Map):Map {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Map()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+/**
+ * Set to true if the keys within each value are sorted
+ */
+keysSorted():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
+static startMap(builder:flatbuffers.Builder) {
+  builder.startObject(1);
+}
+
+static addKeysSorted(builder:flatbuffers.Builder, keysSorted:boolean) {
+  builder.addFieldInt8(0, +keysSorted, +false);
+}
+
+static endMap(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createMap(builder:flatbuffers.Builder, keysSorted:boolean):flatbuffers.Offset {
+  Map.startMap(builder);
+  Map.addKeysSorted(builder, keysSorted);
+  return Map.endMap(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/message-header.ts b/igv_component/node_modules/apache-arrow/src/fb/message-header.ts
new file mode 100644
index 0000000000000000000000000000000000000000..9357013d78e6e1418ada978c1dff87dd3512fc8c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/message-header.ts
@@ -0,0 +1,59 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import { DictionaryBatch } from './dictionary-batch.js';
+import { RecordBatch } from './record-batch.js';
+import { Schema } from './schema.js';
+import { SparseTensor } from './sparse-tensor.js';
+import { Tensor } from './tensor.js';
+
+
+/**
+ * ----------------------------------------------------------------------
+ * The root Message type
+ * This union enables us to easily send different message types without
+ * redundant storage, and in the future we can easily add new message types.
+ *
+ * Arrow implementations do not need to implement all of the message types,
+ * which may include experimental metadata types. For maximum compatibility,
+ * it is best to send data using RecordBatch
+ */
+export enum MessageHeader{
+  NONE = 0,
+  Schema = 1,
+  DictionaryBatch = 2,
+  RecordBatch = 3,
+  Tensor = 4,
+  SparseTensor = 5
+}
+
+export function unionToMessageHeader(
+  type: MessageHeader,
+  accessor: (obj:DictionaryBatch|RecordBatch|Schema|SparseTensor|Tensor) => DictionaryBatch|RecordBatch|Schema|SparseTensor|Tensor|null
+): DictionaryBatch|RecordBatch|Schema|SparseTensor|Tensor|null {
+  switch(MessageHeader[type]) {
+    case 'NONE': return null;
+    case 'Schema': return accessor(new Schema())! as Schema;
+    case 'DictionaryBatch': return accessor(new DictionaryBatch())! as DictionaryBatch;
+    case 'RecordBatch': return accessor(new RecordBatch())! as RecordBatch;
+    case 'Tensor': return accessor(new Tensor())! as Tensor;
+    case 'SparseTensor': return accessor(new SparseTensor())! as SparseTensor;
+    default: return null;
+  }
+}
+
+export function unionListToMessageHeader(
+  type: MessageHeader,
+  accessor: (index: number, obj:DictionaryBatch|RecordBatch|Schema|SparseTensor|Tensor) => DictionaryBatch|RecordBatch|Schema|SparseTensor|Tensor|null,
+  index: number
+): DictionaryBatch|RecordBatch|Schema|SparseTensor|Tensor|null {
+  switch(MessageHeader[type]) {
+    case 'NONE': return null;
+    case 'Schema': return accessor(index, new Schema())! as Schema;
+    case 'DictionaryBatch': return accessor(index, new DictionaryBatch())! as DictionaryBatch;
+    case 'RecordBatch': return accessor(index, new RecordBatch())! as RecordBatch;
+    case 'Tensor': return accessor(index, new Tensor())! as Tensor;
+    case 'SparseTensor': return accessor(index, new SparseTensor())! as SparseTensor;
+    default: return null;
+  }
+}
+
diff --git a/igv_component/node_modules/apache-arrow/src/fb/message.ts b/igv_component/node_modules/apache-arrow/src/fb/message.ts
new file mode 100644
index 0000000000000000000000000000000000000000..7b13c1d387f53e2fb83fe2898ba03322bc188904
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/message.ts
@@ -0,0 +1,117 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { KeyValue } from './key-value.js';
+import { MessageHeader } from './message-header.js';
+import { MetadataVersion } from './metadata-version.js';
+
+
+export class Message {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Message {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsMessage(bb:flatbuffers.ByteBuffer, obj?:Message):Message {
+  return (obj || new Message()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsMessage(bb:flatbuffers.ByteBuffer, obj?:Message):Message {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Message()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+version():MetadataVersion {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt16(this.bb_pos + offset) : MetadataVersion.V1;
+}
+
+headerType():MessageHeader {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.readUint8(this.bb_pos + offset) : MessageHeader.NONE;
+}
+
+// @ts-ignore
+header<T extends flatbuffers.Table>(obj:any):any|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__union(obj, this.bb_pos + offset) : null;
+}
+
+bodyLength():flatbuffers.Long {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.readInt64(this.bb_pos + offset) : this.bb!.createLong(0, 0);
+}
+
+customMetadata(index: number, obj?:KeyValue):KeyValue|null {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? (obj || new KeyValue()).__init(this.bb!.__indirect(this.bb!.__vector(this.bb_pos + offset) + index * 4), this.bb!) : null;
+}
+
+customMetadataLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+static startMessage(builder:flatbuffers.Builder) {
+  builder.startObject(5);
+}
+
+static addVersion(builder:flatbuffers.Builder, version:MetadataVersion) {
+  builder.addFieldInt16(0, version, MetadataVersion.V1);
+}
+
+static addHeaderType(builder:flatbuffers.Builder, headerType:MessageHeader) {
+  builder.addFieldInt8(1, headerType, MessageHeader.NONE);
+}
+
+static addHeader(builder:flatbuffers.Builder, headerOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, headerOffset, 0);
+}
+
+static addBodyLength(builder:flatbuffers.Builder, bodyLength:flatbuffers.Long) {
+  builder.addFieldInt64(3, bodyLength, builder.createLong(0, 0));
+}
+
+static addCustomMetadata(builder:flatbuffers.Builder, customMetadataOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(4, customMetadataOffset, 0);
+}
+
+static createCustomMetadataVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startCustomMetadataVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static endMessage(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static finishMessageBuffer(builder:flatbuffers.Builder, offset:flatbuffers.Offset) {
+  builder.finish(offset);
+}
+
+static finishSizePrefixedMessageBuffer(builder:flatbuffers.Builder, offset:flatbuffers.Offset) {
+  builder.finish(offset, undefined, true);
+}
+
+static createMessage(builder:flatbuffers.Builder, version:MetadataVersion, headerType:MessageHeader, headerOffset:flatbuffers.Offset, bodyLength:flatbuffers.Long, customMetadataOffset:flatbuffers.Offset):flatbuffers.Offset {
+  Message.startMessage(builder);
+  Message.addVersion(builder, version);
+  Message.addHeaderType(builder, headerType);
+  Message.addHeader(builder, headerOffset);
+  Message.addBodyLength(builder, bodyLength);
+  Message.addCustomMetadata(builder, customMetadataOffset);
+  return Message.endMessage(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/metadata-version.ts b/igv_component/node_modules/apache-arrow/src/fb/metadata-version.ts
new file mode 100644
index 0000000000000000000000000000000000000000..18d4bc80f0f2808681d8f45b19183e25ad994cda
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/metadata-version.ts
@@ -0,0 +1,42 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+/**
+ * Logical types, vector layouts, and schemas
+ * Format Version History.
+ * Version 1.0 - Forward and backwards compatibility guaranteed.
+ * Version 1.1 - Add Decimal256 (No format release).
+ * Version 1.2 (Pending)- Add Interval MONTH_DAY_NANO
+ */
+export enum MetadataVersion{
+  /**
+   * 0.1.0 (October 2016).
+   */
+  V1 = 0,
+
+  /**
+   * 0.2.0 (February 2017). Non-backwards compatible with V1.
+   */
+  V2 = 1,
+
+  /**
+   * 0.3.0 -> 0.7.1 (May - December 2017). Non-backwards compatible with V2.
+   */
+  V3 = 2,
+
+  /**
+   * >= 0.8.0 (December 2017). Non-backwards compatible with V3.
+   */
+  V4 = 3,
+
+  /**
+   * >= 1.0.0 (July 2020. Backwards compatible with V4 (V5 readers can read V4
+   * metadata and IPC messages). Implementations are recommended to provide a
+   * V4 compatibility mode with V5 format changes disabled.
+   *
+   * Incompatible changes between V4 and V5:
+   * - Union buffer layout has changed. In V5, Unions don't have a validity
+   *   bitmap buffer.
+   */
+  V5 = 4
+}
+
diff --git a/igv_component/node_modules/apache-arrow/src/fb/null.ts b/igv_component/node_modules/apache-arrow/src/fb/null.ts
new file mode 100644
index 0000000000000000000000000000000000000000..82403dd6ef4b8f6814a613b8fe9fca469443de56
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/null.ts
@@ -0,0 +1,39 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+/**
+ * These are stored in the flatbuffer in the Type union below
+ */
+export class Null {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Null {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsNull(bb:flatbuffers.ByteBuffer, obj?:Null):Null {
+  return (obj || new Null()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsNull(bb:flatbuffers.ByteBuffer, obj?:Null):Null {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Null()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static startNull(builder:flatbuffers.Builder) {
+  builder.startObject(0);
+}
+
+static endNull(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createNull(builder:flatbuffers.Builder):flatbuffers.Offset {
+  Null.startNull(builder);
+  return Null.endNull(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/precision.ts b/igv_component/node_modules/apache-arrow/src/fb/precision.ts
new file mode 100644
index 0000000000000000000000000000000000000000..76d3f8d1918229eebe9a19ad2c1c205a784616af
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/precision.ts
@@ -0,0 +1,8 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+export enum Precision{
+  HALF = 0,
+  SINGLE = 1,
+  DOUBLE = 2
+}
+
diff --git a/igv_component/node_modules/apache-arrow/src/fb/record-batch.ts b/igv_component/node_modules/apache-arrow/src/fb/record-batch.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e2666cd161f25ab5525a6bbb0b739a4e2c2a0c82
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/record-batch.ts
@@ -0,0 +1,114 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { BodyCompression } from './body-compression.js';
+import { Buffer } from './buffer.js';
+import { FieldNode } from './field-node.js';
+
+
+/**
+ * A data header describing the shared memory layout of a "record" or "row"
+ * batch. Some systems call this a "row batch" internally and others a "record
+ * batch".
+ */
+export class RecordBatch {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):RecordBatch {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsRecordBatch(bb:flatbuffers.ByteBuffer, obj?:RecordBatch):RecordBatch {
+  return (obj || new RecordBatch()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsRecordBatch(bb:flatbuffers.ByteBuffer, obj?:RecordBatch):RecordBatch {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new RecordBatch()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+/**
+ * number of records / rows. The arrays in the batch should all have this
+ * length
+ */
+length():flatbuffers.Long {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt64(this.bb_pos + offset) : this.bb!.createLong(0, 0);
+}
+
+/**
+ * Nodes correspond to the pre-ordered flattened logical schema
+ */
+nodes(index: number, obj?:FieldNode):FieldNode|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? (obj || new FieldNode()).__init(this.bb!.__vector(this.bb_pos + offset) + index * 16, this.bb!) : null;
+}
+
+nodesLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+/**
+ * Buffers correspond to the pre-ordered flattened buffer tree
+ *
+ * The number of buffers appended to this list depends on the schema. For
+ * example, most primitive arrays will have 2 buffers, 1 for the validity
+ * bitmap and 1 for the values. For struct arrays, there will only be a
+ * single buffer for the validity (nulls) bitmap
+ */
+buffers(index: number, obj?:Buffer):Buffer|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? (obj || new Buffer()).__init(this.bb!.__vector(this.bb_pos + offset) + index * 16, this.bb!) : null;
+}
+
+buffersLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+/**
+ * Optional compression of the message body
+ */
+compression(obj?:BodyCompression):BodyCompression|null {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? (obj || new BodyCompression()).__init(this.bb!.__indirect(this.bb_pos + offset), this.bb!) : null;
+}
+
+static startRecordBatch(builder:flatbuffers.Builder) {
+  builder.startObject(4);
+}
+
+static addLength(builder:flatbuffers.Builder, length:flatbuffers.Long) {
+  builder.addFieldInt64(0, length, builder.createLong(0, 0));
+}
+
+static addNodes(builder:flatbuffers.Builder, nodesOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, nodesOffset, 0);
+}
+
+static startNodesVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(16, numElems, 8);
+}
+
+static addBuffers(builder:flatbuffers.Builder, buffersOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, buffersOffset, 0);
+}
+
+static startBuffersVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(16, numElems, 8);
+}
+
+static addCompression(builder:flatbuffers.Builder, compressionOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(3, compressionOffset, 0);
+}
+
+static endRecordBatch(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/schema.ts b/igv_component/node_modules/apache-arrow/src/fb/schema.ts
new file mode 100644
index 0000000000000000000000000000000000000000..c832c2b652a9dd28a8829530198276e3efe6338a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/schema.ts
@@ -0,0 +1,152 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { Endianness } from './endianness.js';
+import { Field } from './field.js';
+import { KeyValue } from './key-value.js';
+
+
+/**
+ * ----------------------------------------------------------------------
+ * A Schema describes the columns in a row batch
+ */
+export class Schema {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Schema {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsSchema(bb:flatbuffers.ByteBuffer, obj?:Schema):Schema {
+  return (obj || new Schema()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsSchema(bb:flatbuffers.ByteBuffer, obj?:Schema):Schema {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Schema()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+/**
+ * endianness of the buffer
+ * it is Little Endian by default
+ * if endianness doesn't match the underlying system then the vectors need to be converted
+ */
+endianness():Endianness {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt16(this.bb_pos + offset) : Endianness.Little;
+}
+
+fields(index: number, obj?:Field):Field|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? (obj || new Field()).__init(this.bb!.__indirect(this.bb!.__vector(this.bb_pos + offset) + index * 4), this.bb!) : null;
+}
+
+fieldsLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+customMetadata(index: number, obj?:KeyValue):KeyValue|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? (obj || new KeyValue()).__init(this.bb!.__indirect(this.bb!.__vector(this.bb_pos + offset) + index * 4), this.bb!) : null;
+}
+
+customMetadataLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+/**
+ * Features used in the stream/file.
+ */
+features(index: number):flatbuffers.Long|null {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.readInt64(this.bb!.__vector(this.bb_pos + offset) + index * 8) : this.bb!.createLong(0, 0);
+}
+
+featuresLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+static startSchema(builder:flatbuffers.Builder) {
+  builder.startObject(4);
+}
+
+static addEndianness(builder:flatbuffers.Builder, endianness:Endianness) {
+  builder.addFieldInt16(0, endianness, Endianness.Little);
+}
+
+static addFields(builder:flatbuffers.Builder, fieldsOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, fieldsOffset, 0);
+}
+
+static createFieldsVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startFieldsVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static addCustomMetadata(builder:flatbuffers.Builder, customMetadataOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, customMetadataOffset, 0);
+}
+
+static createCustomMetadataVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startCustomMetadataVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static addFeatures(builder:flatbuffers.Builder, featuresOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(3, featuresOffset, 0);
+}
+
+static createFeaturesVector(builder:flatbuffers.Builder, data:flatbuffers.Long[]):flatbuffers.Offset {
+  builder.startVector(8, data.length, 8);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addInt64(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startFeaturesVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(8, numElems, 8);
+}
+
+static endSchema(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static finishSchemaBuffer(builder:flatbuffers.Builder, offset:flatbuffers.Offset) {
+  builder.finish(offset);
+}
+
+static finishSizePrefixedSchemaBuffer(builder:flatbuffers.Builder, offset:flatbuffers.Offset) {
+  builder.finish(offset, undefined, true);
+}
+
+static createSchema(builder:flatbuffers.Builder, endianness:Endianness, fieldsOffset:flatbuffers.Offset, customMetadataOffset:flatbuffers.Offset, featuresOffset:flatbuffers.Offset):flatbuffers.Offset {
+  Schema.startSchema(builder);
+  Schema.addEndianness(builder, endianness);
+  Schema.addFields(builder, fieldsOffset);
+  Schema.addCustomMetadata(builder, customMetadataOffset);
+  Schema.addFeatures(builder, featuresOffset);
+  return Schema.endSchema(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/sparse-matrix-compressed-axis.ts b/igv_component/node_modules/apache-arrow/src/fb/sparse-matrix-compressed-axis.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e1dc200c66a8a3dbc11f8eb72349ac5a8d7fc4dd
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/sparse-matrix-compressed-axis.ts
@@ -0,0 +1,7 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+export enum SparseMatrixCompressedAxis{
+  Row = 0,
+  Column = 1
+}
+
diff --git a/igv_component/node_modules/apache-arrow/src/fb/sparse-matrix-index-c-s-x.ts b/igv_component/node_modules/apache-arrow/src/fb/sparse-matrix-index-c-s-x.ts
new file mode 100644
index 0000000000000000000000000000000000000000..77510ee052784cb57c101b09a73611ffc0dc7afe
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/sparse-matrix-index-c-s-x.ts
@@ -0,0 +1,134 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { Buffer } from './buffer.js';
+import { Int } from './int.js';
+import { SparseMatrixCompressedAxis } from './sparse-matrix-compressed-axis.js';
+
+
+/**
+ * Compressed Sparse format, that is matrix-specific.
+ */
+export class SparseMatrixIndexCSX {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):SparseMatrixIndexCSX {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsSparseMatrixIndexCSX(bb:flatbuffers.ByteBuffer, obj?:SparseMatrixIndexCSX):SparseMatrixIndexCSX {
+  return (obj || new SparseMatrixIndexCSX()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsSparseMatrixIndexCSX(bb:flatbuffers.ByteBuffer, obj?:SparseMatrixIndexCSX):SparseMatrixIndexCSX {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new SparseMatrixIndexCSX()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+/**
+ * Which axis, row or column, is compressed
+ */
+compressedAxis():SparseMatrixCompressedAxis {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt16(this.bb_pos + offset) : SparseMatrixCompressedAxis.Row;
+}
+
+/**
+ * The type of values in indptrBuffer
+ */
+indptrType(obj?:Int):Int|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? (obj || new Int()).__init(this.bb!.__indirect(this.bb_pos + offset), this.bb!) : null;
+}
+
+/**
+ * indptrBuffer stores the location and size of indptr array that
+ * represents the range of the rows.
+ * The i-th row spans from `indptr[i]` to `indptr[i+1]` in the data.
+ * The length of this array is 1 + (the number of rows), and the type
+ * of index value is long.
+ *
+ * For example, let X be the following 6x4 matrix:
+ * ```text
+ *   X := [[0, 1, 2, 0],
+ *         [0, 0, 3, 0],
+ *         [0, 4, 0, 5],
+ *         [0, 0, 0, 0],
+ *         [6, 0, 7, 8],
+ *         [0, 9, 0, 0]].
+ * ```
+ * The array of non-zero values in X is:
+ * ```text
+ *   values(X) = [1, 2, 3, 4, 5, 6, 7, 8, 9].
+ * ```
+ * And the indptr of X is:
+ * ```text
+ *   indptr(X) = [0, 2, 3, 5, 5, 8, 10].
+ * ```
+ */
+indptrBuffer(obj?:Buffer):Buffer|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? (obj || new Buffer()).__init(this.bb_pos + offset, this.bb!) : null;
+}
+
+/**
+ * The type of values in indicesBuffer
+ */
+indicesType(obj?:Int):Int|null {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? (obj || new Int()).__init(this.bb!.__indirect(this.bb_pos + offset), this.bb!) : null;
+}
+
+/**
+ * indicesBuffer stores the location and size of the array that
+ * contains the column indices of the corresponding non-zero values.
+ * The type of index value is long.
+ *
+ * For example, the indices of the above X is:
+ * ```text
+ *   indices(X) = [1, 2, 2, 1, 3, 0, 2, 3, 1].
+ * ```
+ * Note that the indices are sorted in lexicographical order for each row.
+ */
+indicesBuffer(obj?:Buffer):Buffer|null {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? (obj || new Buffer()).__init(this.bb_pos + offset, this.bb!) : null;
+}
+
+static startSparseMatrixIndexCSX(builder:flatbuffers.Builder) {
+  builder.startObject(5);
+}
+
+static addCompressedAxis(builder:flatbuffers.Builder, compressedAxis:SparseMatrixCompressedAxis) {
+  builder.addFieldInt16(0, compressedAxis, SparseMatrixCompressedAxis.Row);
+}
+
+static addIndptrType(builder:flatbuffers.Builder, indptrTypeOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, indptrTypeOffset, 0);
+}
+
+static addIndptrBuffer(builder:flatbuffers.Builder, indptrBufferOffset:flatbuffers.Offset) {
+  builder.addFieldStruct(2, indptrBufferOffset, 0);
+}
+
+static addIndicesType(builder:flatbuffers.Builder, indicesTypeOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(3, indicesTypeOffset, 0);
+}
+
+static addIndicesBuffer(builder:flatbuffers.Builder, indicesBufferOffset:flatbuffers.Offset) {
+  builder.addFieldStruct(4, indicesBufferOffset, 0);
+}
+
+static endSparseMatrixIndexCSX(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  builder.requiredField(offset, 6) // indptrType
+  builder.requiredField(offset, 8) // indptrBuffer
+  builder.requiredField(offset, 10) // indicesType
+  builder.requiredField(offset, 12) // indicesBuffer
+  return offset;
+}
+
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/sparse-tensor-index-c-o-o.ts b/igv_component/node_modules/apache-arrow/src/fb/sparse-tensor-index-c-o-o.ts
new file mode 100644
index 0000000000000000000000000000000000000000..0de7f1e2c267555bf5fb44ec7516d319142fd40e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/sparse-tensor-index-c-o-o.ts
@@ -0,0 +1,142 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { Buffer } from './buffer.js';
+import { Int } from './int.js';
+
+
+/**
+ * ----------------------------------------------------------------------
+ * EXPERIMENTAL: Data structures for sparse tensors
+ * Coordinate (COO) format of sparse tensor index.
+ *
+ * COO's index list are represented as a NxM matrix,
+ * where N is the number of non-zero values,
+ * and M is the number of dimensions of a sparse tensor.
+ *
+ * indicesBuffer stores the location and size of the data of this indices
+ * matrix.  The value type and the stride of the indices matrix is
+ * specified in indicesType and indicesStrides fields.
+ *
+ * For example, let X be a 2x3x4x5 tensor, and it has the following
+ * 6 non-zero values:
+ * ```text
+ *   X[0, 1, 2, 0] := 1
+ *   X[1, 1, 2, 3] := 2
+ *   X[0, 2, 1, 0] := 3
+ *   X[0, 1, 3, 0] := 4
+ *   X[0, 1, 2, 1] := 5
+ *   X[1, 2, 0, 4] := 6
+ * ```
+ * In COO format, the index matrix of X is the following 4x6 matrix:
+ * ```text
+ *   [[0, 0, 0, 0, 1, 1],
+ *    [1, 1, 1, 2, 1, 2],
+ *    [2, 2, 3, 1, 2, 0],
+ *    [0, 1, 0, 0, 3, 4]]
+ * ```
+ * When isCanonical is true, the indices is sorted in lexicographical order
+ * (row-major order), and it does not have duplicated entries.  Otherwise,
+ * the indices may not be sorted, or may have duplicated entries.
+ */
+export class SparseTensorIndexCOO {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):SparseTensorIndexCOO {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsSparseTensorIndexCOO(bb:flatbuffers.ByteBuffer, obj?:SparseTensorIndexCOO):SparseTensorIndexCOO {
+  return (obj || new SparseTensorIndexCOO()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsSparseTensorIndexCOO(bb:flatbuffers.ByteBuffer, obj?:SparseTensorIndexCOO):SparseTensorIndexCOO {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new SparseTensorIndexCOO()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+/**
+ * The type of values in indicesBuffer
+ */
+indicesType(obj?:Int):Int|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? (obj || new Int()).__init(this.bb!.__indirect(this.bb_pos + offset), this.bb!) : null;
+}
+
+/**
+ * Non-negative byte offsets to advance one value cell along each dimension
+ * If omitted, default to row-major order (C-like).
+ */
+indicesStrides(index: number):flatbuffers.Long|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.readInt64(this.bb!.__vector(this.bb_pos + offset) + index * 8) : this.bb!.createLong(0, 0);
+}
+
+indicesStridesLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+/**
+ * The location and size of the indices matrix's data
+ */
+indicesBuffer(obj?:Buffer):Buffer|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? (obj || new Buffer()).__init(this.bb_pos + offset, this.bb!) : null;
+}
+
+/**
+ * This flag is true if and only if the indices matrix is sorted in
+ * row-major order, and does not have duplicated entries.
+ * This sort order is the same as of Tensorflow's SparseTensor,
+ * but it is inverse order of SciPy's canonical coo_matrix
+ * (SciPy employs column-major order for its coo_matrix).
+ */
+isCanonical():boolean {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? !!this.bb!.readInt8(this.bb_pos + offset) : false;
+}
+
+static startSparseTensorIndexCOO(builder:flatbuffers.Builder) {
+  builder.startObject(4);
+}
+
+static addIndicesType(builder:flatbuffers.Builder, indicesTypeOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, indicesTypeOffset, 0);
+}
+
+static addIndicesStrides(builder:flatbuffers.Builder, indicesStridesOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, indicesStridesOffset, 0);
+}
+
+static createIndicesStridesVector(builder:flatbuffers.Builder, data:flatbuffers.Long[]):flatbuffers.Offset {
+  builder.startVector(8, data.length, 8);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addInt64(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startIndicesStridesVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(8, numElems, 8);
+}
+
+static addIndicesBuffer(builder:flatbuffers.Builder, indicesBufferOffset:flatbuffers.Offset) {
+  builder.addFieldStruct(2, indicesBufferOffset, 0);
+}
+
+static addIsCanonical(builder:flatbuffers.Builder, isCanonical:boolean) {
+  builder.addFieldInt8(3, +isCanonical, +false);
+}
+
+static endSparseTensorIndexCOO(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  builder.requiredField(offset, 4) // indicesType
+  builder.requiredField(offset, 8) // indicesBuffer
+  return offset;
+}
+
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/sparse-tensor-index-c-s-f.ts b/igv_component/node_modules/apache-arrow/src/fb/sparse-tensor-index-c-s-f.ts
new file mode 100644
index 0000000000000000000000000000000000000000..ad23d0af768399f2bc2333a68321de1e5778bf37
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/sparse-tensor-index-c-s-f.ts
@@ -0,0 +1,207 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { Buffer } from './buffer.js';
+import { Int } from './int.js';
+
+
+/**
+ * Compressed Sparse Fiber (CSF) sparse tensor index.
+ */
+export class SparseTensorIndexCSF {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):SparseTensorIndexCSF {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsSparseTensorIndexCSF(bb:flatbuffers.ByteBuffer, obj?:SparseTensorIndexCSF):SparseTensorIndexCSF {
+  return (obj || new SparseTensorIndexCSF()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsSparseTensorIndexCSF(bb:flatbuffers.ByteBuffer, obj?:SparseTensorIndexCSF):SparseTensorIndexCSF {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new SparseTensorIndexCSF()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+/**
+ * CSF is a generalization of compressed sparse row (CSR) index.
+ * See [smith2017knl](http://shaden.io/pub-files/smith2017knl.pdf)
+ *
+ * CSF index recursively compresses each dimension of a tensor into a set
+ * of prefix trees. Each path from a root to leaf forms one tensor
+ * non-zero index. CSF is implemented with two arrays of buffers and one
+ * arrays of integers.
+ *
+ * For example, let X be a 2x3x4x5 tensor and let it have the following
+ * 8 non-zero values:
+ * ```text
+ *   X[0, 0, 0, 1] := 1
+ *   X[0, 0, 0, 2] := 2
+ *   X[0, 1, 0, 0] := 3
+ *   X[0, 1, 0, 2] := 4
+ *   X[0, 1, 1, 0] := 5
+ *   X[1, 1, 1, 0] := 6
+ *   X[1, 1, 1, 1] := 7
+ *   X[1, 1, 1, 2] := 8
+ * ```
+ * As a prefix tree this would be represented as:
+ * ```text
+ *         0          1
+ *        / \         |
+ *       0   1        1
+ *      /   / \       |
+ *     0   0   1      1
+ *    /|  /|   |    /| |
+ *   1 2 0 2   0   0 1 2
+ * ```
+ * The type of values in indptrBuffers
+ */
+indptrType(obj?:Int):Int|null {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? (obj || new Int()).__init(this.bb!.__indirect(this.bb_pos + offset), this.bb!) : null;
+}
+
+/**
+ * indptrBuffers stores the sparsity structure.
+ * Each two consecutive dimensions in a tensor correspond to a buffer in
+ * indptrBuffers. A pair of consecutive values at `indptrBuffers[dim][i]`
+ * and `indptrBuffers[dim][i + 1]` signify a range of nodes in
+ * `indicesBuffers[dim + 1]` who are children of `indicesBuffers[dim][i]` node.
+ *
+ * For example, the indptrBuffers for the above X is:
+ * ```text
+ *   indptrBuffer(X) = [
+ *                       [0, 2, 3],
+ *                       [0, 1, 3, 4],
+ *                       [0, 2, 4, 5, 8]
+ *                     ].
+ * ```
+ */
+indptrBuffers(index: number, obj?:Buffer):Buffer|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? (obj || new Buffer()).__init(this.bb!.__vector(this.bb_pos + offset) + index * 16, this.bb!) : null;
+}
+
+indptrBuffersLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+/**
+ * The type of values in indicesBuffers
+ */
+indicesType(obj?:Int):Int|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? (obj || new Int()).__init(this.bb!.__indirect(this.bb_pos + offset), this.bb!) : null;
+}
+
+/**
+ * indicesBuffers stores values of nodes.
+ * Each tensor dimension corresponds to a buffer in indicesBuffers.
+ * For example, the indicesBuffers for the above X is:
+ * ```text
+ *   indicesBuffer(X) = [
+ *                        [0, 1],
+ *                        [0, 1, 1],
+ *                        [0, 0, 1, 1],
+ *                        [1, 2, 0, 2, 0, 0, 1, 2]
+ *                      ].
+ * ```
+ */
+indicesBuffers(index: number, obj?:Buffer):Buffer|null {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? (obj || new Buffer()).__init(this.bb!.__vector(this.bb_pos + offset) + index * 16, this.bb!) : null;
+}
+
+indicesBuffersLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+/**
+ * axisOrder stores the sequence in which dimensions were traversed to
+ * produce the prefix tree.
+ * For example, the axisOrder for the above X is:
+ * ```text
+ *   axisOrder(X) = [0, 1, 2, 3].
+ * ```
+ */
+axisOrder(index: number):number|null {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? this.bb!.readInt32(this.bb!.__vector(this.bb_pos + offset) + index * 4) : 0;
+}
+
+axisOrderLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+axisOrderArray():Int32Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? new Int32Array(this.bb!.bytes().buffer, this.bb!.bytes().byteOffset + this.bb!.__vector(this.bb_pos + offset), this.bb!.__vector_len(this.bb_pos + offset)) : null;
+}
+
+static startSparseTensorIndexCSF(builder:flatbuffers.Builder) {
+  builder.startObject(5);
+}
+
+static addIndptrType(builder:flatbuffers.Builder, indptrTypeOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(0, indptrTypeOffset, 0);
+}
+
+static addIndptrBuffers(builder:flatbuffers.Builder, indptrBuffersOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, indptrBuffersOffset, 0);
+}
+
+static startIndptrBuffersVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(16, numElems, 8);
+}
+
+static addIndicesType(builder:flatbuffers.Builder, indicesTypeOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, indicesTypeOffset, 0);
+}
+
+static addIndicesBuffers(builder:flatbuffers.Builder, indicesBuffersOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(3, indicesBuffersOffset, 0);
+}
+
+static startIndicesBuffersVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(16, numElems, 8);
+}
+
+static addAxisOrder(builder:flatbuffers.Builder, axisOrderOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(4, axisOrderOffset, 0);
+}
+
+static createAxisOrderVector(builder:flatbuffers.Builder, data:number[]|Int32Array):flatbuffers.Offset;
+/**
+ * @deprecated This Uint8Array overload will be removed in the future.
+ */
+static createAxisOrderVector(builder:flatbuffers.Builder, data:number[]|Uint8Array):flatbuffers.Offset;
+static createAxisOrderVector(builder:flatbuffers.Builder, data:number[]|Int32Array|Uint8Array):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addInt32(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startAxisOrderVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static endSparseTensorIndexCSF(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  builder.requiredField(offset, 4) // indptrType
+  builder.requiredField(offset, 6) // indptrBuffers
+  builder.requiredField(offset, 8) // indicesType
+  builder.requiredField(offset, 10) // indicesBuffers
+  builder.requiredField(offset, 12) // axisOrder
+  return offset;
+}
+
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/sparse-tensor-index.ts b/igv_component/node_modules/apache-arrow/src/fb/sparse-tensor-index.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a9a3553d3f93a79675693cd32cc449a415ccafa2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/sparse-tensor-index.ts
@@ -0,0 +1,41 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import { SparseMatrixIndexCSX } from './sparse-matrix-index-c-s-x.js';
+import { SparseTensorIndexCOO } from './sparse-tensor-index-c-o-o.js';
+import { SparseTensorIndexCSF } from './sparse-tensor-index-c-s-f.js';
+
+
+export enum SparseTensorIndex{
+  NONE = 0,
+  SparseTensorIndexCOO = 1,
+  SparseMatrixIndexCSX = 2,
+  SparseTensorIndexCSF = 3
+}
+
+export function unionToSparseTensorIndex(
+  type: SparseTensorIndex,
+  accessor: (obj:SparseMatrixIndexCSX|SparseTensorIndexCOO|SparseTensorIndexCSF) => SparseMatrixIndexCSX|SparseTensorIndexCOO|SparseTensorIndexCSF|null
+): SparseMatrixIndexCSX|SparseTensorIndexCOO|SparseTensorIndexCSF|null {
+  switch(SparseTensorIndex[type]) {
+    case 'NONE': return null;
+    case 'SparseTensorIndexCOO': return accessor(new SparseTensorIndexCOO())! as SparseTensorIndexCOO;
+    case 'SparseMatrixIndexCSX': return accessor(new SparseMatrixIndexCSX())! as SparseMatrixIndexCSX;
+    case 'SparseTensorIndexCSF': return accessor(new SparseTensorIndexCSF())! as SparseTensorIndexCSF;
+    default: return null;
+  }
+}
+
+export function unionListToSparseTensorIndex(
+  type: SparseTensorIndex,
+  accessor: (index: number, obj:SparseMatrixIndexCSX|SparseTensorIndexCOO|SparseTensorIndexCSF) => SparseMatrixIndexCSX|SparseTensorIndexCOO|SparseTensorIndexCSF|null,
+  index: number
+): SparseMatrixIndexCSX|SparseTensorIndexCOO|SparseTensorIndexCSF|null {
+  switch(SparseTensorIndex[type]) {
+    case 'NONE': return null;
+    case 'SparseTensorIndexCOO': return accessor(index, new SparseTensorIndexCOO())! as SparseTensorIndexCOO;
+    case 'SparseMatrixIndexCSX': return accessor(index, new SparseMatrixIndexCSX())! as SparseMatrixIndexCSX;
+    case 'SparseTensorIndexCSF': return accessor(index, new SparseTensorIndexCSF())! as SparseTensorIndexCSF;
+    default: return null;
+  }
+}
+
diff --git a/igv_component/node_modules/apache-arrow/src/fb/sparse-tensor.ts b/igv_component/node_modules/apache-arrow/src/fb/sparse-tensor.ts
new file mode 100644
index 0000000000000000000000000000000000000000..99a429e31eb8d1531c78e9b475ece0e8fc4b8580
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/sparse-tensor.ts
@@ -0,0 +1,149 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { Buffer } from './buffer.js';
+import { SparseTensorIndex } from './sparse-tensor-index.js';
+import { TensorDim } from './tensor-dim.js';
+import { Type } from './type.js';
+
+
+export class SparseTensor {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):SparseTensor {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsSparseTensor(bb:flatbuffers.ByteBuffer, obj?:SparseTensor):SparseTensor {
+  return (obj || new SparseTensor()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsSparseTensor(bb:flatbuffers.ByteBuffer, obj?:SparseTensor):SparseTensor {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new SparseTensor()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+typeType():Type {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readUint8(this.bb_pos + offset) : Type.NONE;
+}
+
+/**
+ * The type of data contained in a value cell.
+ * Currently only fixed-width value types are supported,
+ * no strings or nested types.
+ */
+// @ts-ignore
+type<T extends flatbuffers.Table>(obj:any):any|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__union(obj, this.bb_pos + offset) : null;
+}
+
+/**
+ * The dimensions of the tensor, optionally named.
+ */
+shape(index: number, obj?:TensorDim):TensorDim|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? (obj || new TensorDim()).__init(this.bb!.__indirect(this.bb!.__vector(this.bb_pos + offset) + index * 4), this.bb!) : null;
+}
+
+shapeLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+/**
+ * The number of non-zero values in a sparse tensor.
+ */
+nonZeroLength():flatbuffers.Long {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.readInt64(this.bb_pos + offset) : this.bb!.createLong(0, 0);
+}
+
+sparseIndexType():SparseTensorIndex {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? this.bb!.readUint8(this.bb_pos + offset) : SparseTensorIndex.NONE;
+}
+
+/**
+ * Sparse tensor index
+ */
+// @ts-ignore
+sparseIndex<T extends flatbuffers.Table>(obj:any):any|null {
+  const offset = this.bb!.__offset(this.bb_pos, 14);
+  return offset ? this.bb!.__union(obj, this.bb_pos + offset) : null;
+}
+
+/**
+ * The location and size of the tensor's data
+ */
+data(obj?:Buffer):Buffer|null {
+  const offset = this.bb!.__offset(this.bb_pos, 16);
+  return offset ? (obj || new Buffer()).__init(this.bb_pos + offset, this.bb!) : null;
+}
+
+static startSparseTensor(builder:flatbuffers.Builder) {
+  builder.startObject(7);
+}
+
+static addTypeType(builder:flatbuffers.Builder, typeType:Type) {
+  builder.addFieldInt8(0, typeType, Type.NONE);
+}
+
+static addType(builder:flatbuffers.Builder, typeOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, typeOffset, 0);
+}
+
+static addShape(builder:flatbuffers.Builder, shapeOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, shapeOffset, 0);
+}
+
+static createShapeVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startShapeVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static addNonZeroLength(builder:flatbuffers.Builder, nonZeroLength:flatbuffers.Long) {
+  builder.addFieldInt64(3, nonZeroLength, builder.createLong(0, 0));
+}
+
+static addSparseIndexType(builder:flatbuffers.Builder, sparseIndexType:SparseTensorIndex) {
+  builder.addFieldInt8(4, sparseIndexType, SparseTensorIndex.NONE);
+}
+
+static addSparseIndex(builder:flatbuffers.Builder, sparseIndexOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(5, sparseIndexOffset, 0);
+}
+
+static addData(builder:flatbuffers.Builder, dataOffset:flatbuffers.Offset) {
+  builder.addFieldStruct(6, dataOffset, 0);
+}
+
+static endSparseTensor(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  builder.requiredField(offset, 6) // type
+  builder.requiredField(offset, 8) // shape
+  builder.requiredField(offset, 14) // sparseIndex
+  builder.requiredField(offset, 16) // data
+  return offset;
+}
+
+static finishSparseTensorBuffer(builder:flatbuffers.Builder, offset:flatbuffers.Offset) {
+  builder.finish(offset);
+}
+
+static finishSizePrefixedSparseTensorBuffer(builder:flatbuffers.Builder, offset:flatbuffers.Offset) {
+  builder.finish(offset, undefined, true);
+}
+
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/struct_.ts b/igv_component/node_modules/apache-arrow/src/fb/struct_.ts
new file mode 100644
index 0000000000000000000000000000000000000000..84cdf041652f521ed72a0340bd7ab07eb8fe42f2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/struct_.ts
@@ -0,0 +1,41 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+/**
+ * A Struct_ in the flatbuffer metadata is the same as an Arrow Struct
+ * (according to the physical memory layout). We used Struct_ here as
+ * Struct is a reserved word in Flatbuffers
+ */
+export class Struct_ {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Struct_ {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsStruct_(bb:flatbuffers.ByteBuffer, obj?:Struct_):Struct_ {
+  return (obj || new Struct_()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsStruct_(bb:flatbuffers.ByteBuffer, obj?:Struct_):Struct_ {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Struct_()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static startStruct_(builder:flatbuffers.Builder) {
+  builder.startObject(0);
+}
+
+static endStruct_(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createStruct_(builder:flatbuffers.Builder):flatbuffers.Offset {
+  Struct_.startStruct_(builder);
+  return Struct_.endStruct_(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/tensor-dim.ts b/igv_component/node_modules/apache-arrow/src/fb/tensor-dim.ts
new file mode 100644
index 0000000000000000000000000000000000000000..cef6da1752138764ee09f68316307ee5407dde3e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/tensor-dim.ts
@@ -0,0 +1,69 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+/**
+ * ----------------------------------------------------------------------
+ * Data structures for dense tensors
+ * Shape data for a single axis in a tensor
+ */
+export class TensorDim {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):TensorDim {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsTensorDim(bb:flatbuffers.ByteBuffer, obj?:TensorDim):TensorDim {
+  return (obj || new TensorDim()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsTensorDim(bb:flatbuffers.ByteBuffer, obj?:TensorDim):TensorDim {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new TensorDim()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+/**
+ * Length of dimension
+ */
+size():flatbuffers.Long {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt64(this.bb_pos + offset) : this.bb!.createLong(0, 0);
+}
+
+/**
+ * Name of the dimension, optional
+ */
+name():string|null
+name(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+name(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+static startTensorDim(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addSize(builder:flatbuffers.Builder, size:flatbuffers.Long) {
+  builder.addFieldInt64(0, size, builder.createLong(0, 0));
+}
+
+static addName(builder:flatbuffers.Builder, nameOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, nameOffset, 0);
+}
+
+static endTensorDim(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createTensorDim(builder:flatbuffers.Builder, size:flatbuffers.Long, nameOffset:flatbuffers.Offset):flatbuffers.Offset {
+  TensorDim.startTensorDim(builder);
+  TensorDim.addSize(builder, size);
+  TensorDim.addName(builder, nameOffset);
+  return TensorDim.endTensorDim(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/tensor.ts b/igv_component/node_modules/apache-arrow/src/fb/tensor.ts
new file mode 100644
index 0000000000000000000000000000000000000000..01f4f6d88ec4e2843fee679cb8aef4c0dbb5e38d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/tensor.ts
@@ -0,0 +1,142 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { Buffer } from './buffer.js';
+import { TensorDim } from './tensor-dim.js';
+import { Type } from './type.js';
+
+
+export class Tensor {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Tensor {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsTensor(bb:flatbuffers.ByteBuffer, obj?:Tensor):Tensor {
+  return (obj || new Tensor()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsTensor(bb:flatbuffers.ByteBuffer, obj?:Tensor):Tensor {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Tensor()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+typeType():Type {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readUint8(this.bb_pos + offset) : Type.NONE;
+}
+
+/**
+ * The type of data contained in a value cell. Currently only fixed-width
+ * value types are supported, no strings or nested types
+ */
+// @ts-ignore
+type<T extends flatbuffers.Table>(obj:any):any|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__union(obj, this.bb_pos + offset) : null;
+}
+
+/**
+ * The dimensions of the tensor, optionally named
+ */
+shape(index: number, obj?:TensorDim):TensorDim|null {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? (obj || new TensorDim()).__init(this.bb!.__indirect(this.bb!.__vector(this.bb_pos + offset) + index * 4), this.bb!) : null;
+}
+
+shapeLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 8);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+/**
+ * Non-negative byte offsets to advance one value cell along each dimension
+ * If omitted, default to row-major order (C-like).
+ */
+strides(index: number):flatbuffers.Long|null {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.readInt64(this.bb!.__vector(this.bb_pos + offset) + index * 8) : this.bb!.createLong(0, 0);
+}
+
+stridesLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 10);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+/**
+ * The location and size of the tensor's data
+ */
+data(obj?:Buffer):Buffer|null {
+  const offset = this.bb!.__offset(this.bb_pos, 12);
+  return offset ? (obj || new Buffer()).__init(this.bb_pos + offset, this.bb!) : null;
+}
+
+static startTensor(builder:flatbuffers.Builder) {
+  builder.startObject(5);
+}
+
+static addTypeType(builder:flatbuffers.Builder, typeType:Type) {
+  builder.addFieldInt8(0, typeType, Type.NONE);
+}
+
+static addType(builder:flatbuffers.Builder, typeOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, typeOffset, 0);
+}
+
+static addShape(builder:flatbuffers.Builder, shapeOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(2, shapeOffset, 0);
+}
+
+static createShapeVector(builder:flatbuffers.Builder, data:flatbuffers.Offset[]):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addOffset(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startShapeVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static addStrides(builder:flatbuffers.Builder, stridesOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(3, stridesOffset, 0);
+}
+
+static createStridesVector(builder:flatbuffers.Builder, data:flatbuffers.Long[]):flatbuffers.Offset {
+  builder.startVector(8, data.length, 8);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addInt64(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startStridesVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(8, numElems, 8);
+}
+
+static addData(builder:flatbuffers.Builder, dataOffset:flatbuffers.Offset) {
+  builder.addFieldStruct(4, dataOffset, 0);
+}
+
+static endTensor(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  builder.requiredField(offset, 6) // type
+  builder.requiredField(offset, 8) // shape
+  builder.requiredField(offset, 12) // data
+  return offset;
+}
+
+static finishTensorBuffer(builder:flatbuffers.Builder, offset:flatbuffers.Offset) {
+  builder.finish(offset);
+}
+
+static finishSizePrefixedTensorBuffer(builder:flatbuffers.Builder, offset:flatbuffers.Offset) {
+  builder.finish(offset, undefined, true);
+}
+
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/time-unit.ts b/igv_component/node_modules/apache-arrow/src/fb/time-unit.ts
new file mode 100644
index 0000000000000000000000000000000000000000..67041d58bbfa20191813cbbc6421ef3e2ea4dc92
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/time-unit.ts
@@ -0,0 +1,9 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+export enum TimeUnit{
+  SECOND = 0,
+  MILLISECOND = 1,
+  MICROSECOND = 2,
+  NANOSECOND = 3
+}
+
diff --git a/igv_component/node_modules/apache-arrow/src/fb/time.ts b/igv_component/node_modules/apache-arrow/src/fb/time.ts
new file mode 100644
index 0000000000000000000000000000000000000000..53b77d61ba600cb3d91adf99bcdd2b4eb1795955
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/time.ts
@@ -0,0 +1,75 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { TimeUnit } from './time-unit.js';
+
+
+/**
+ * Time is either a 32-bit or 64-bit signed integer type representing an
+ * elapsed time since midnight, stored in either of four units: seconds,
+ * milliseconds, microseconds or nanoseconds.
+ *
+ * The integer `bitWidth` depends on the `unit` and must be one of the following:
+ * * SECOND and MILLISECOND: 32 bits
+ * * MICROSECOND and NANOSECOND: 64 bits
+ *
+ * The allowed values are between 0 (inclusive) and 86400 (=24*60*60) seconds
+ * (exclusive), adjusted for the time unit (for example, up to 86400000
+ * exclusive for the MILLISECOND unit).
+ * This definition doesn't allow for leap seconds. Time values from
+ * measurements with leap seconds will need to be corrected when ingesting
+ * into Arrow (for example by replacing the value 86400 with 86399).
+ */
+export class Time {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Time {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsTime(bb:flatbuffers.ByteBuffer, obj?:Time):Time {
+  return (obj || new Time()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsTime(bb:flatbuffers.ByteBuffer, obj?:Time):Time {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Time()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+unit():TimeUnit {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt16(this.bb_pos + offset) : TimeUnit.MILLISECOND;
+}
+
+bitWidth():number {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.readInt32(this.bb_pos + offset) : 32;
+}
+
+static startTime(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addUnit(builder:flatbuffers.Builder, unit:TimeUnit) {
+  builder.addFieldInt16(0, unit, TimeUnit.MILLISECOND);
+}
+
+static addBitWidth(builder:flatbuffers.Builder, bitWidth:number) {
+  builder.addFieldInt32(1, bitWidth, 32);
+}
+
+static endTime(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createTime(builder:flatbuffers.Builder, unit:TimeUnit, bitWidth:number):flatbuffers.Offset {
+  Time.startTime(builder);
+  Time.addUnit(builder, unit);
+  Time.addBitWidth(builder, bitWidth);
+  return Time.endTime(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/timestamp.ts b/igv_component/node_modules/apache-arrow/src/fb/timestamp.ts
new file mode 100644
index 0000000000000000000000000000000000000000..01ec36d24b87af1b8e859be8205fa00ec4a460a8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/timestamp.ts
@@ -0,0 +1,180 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { TimeUnit } from './time-unit.js';
+
+
+/**
+ * Timestamp is a 64-bit signed integer representing an elapsed time since a
+ * fixed epoch, stored in either of four units: seconds, milliseconds,
+ * microseconds or nanoseconds, and is optionally annotated with a timezone.
+ *
+ * Timestamp values do not include any leap seconds (in other words, all
+ * days are considered 86400 seconds long).
+ *
+ * Timestamps with a non-empty timezone
+ * ------------------------------------
+ *
+ * If a Timestamp column has a non-empty timezone value, its epoch is
+ * 1970-01-01 00:00:00 (January 1st 1970, midnight) in the *UTC* timezone
+ * (the Unix epoch), regardless of the Timestamp's own timezone.
+ *
+ * Therefore, timestamp values with a non-empty timezone correspond to
+ * physical points in time together with some additional information about
+ * how the data was obtained and/or how to display it (the timezone).
+ *
+ *   For example, the timestamp value 0 with the timezone string "Europe/Paris"
+ *   corresponds to "January 1st 1970, 00h00" in the UTC timezone, but the
+ *   application may prefer to display it as "January 1st 1970, 01h00" in
+ *   the Europe/Paris timezone (which is the same physical point in time).
+ *
+ * One consequence is that timestamp values with a non-empty timezone
+ * can be compared and ordered directly, since they all share the same
+ * well-known point of reference (the Unix epoch).
+ *
+ * Timestamps with an unset / empty timezone
+ * -----------------------------------------
+ *
+ * If a Timestamp column has no timezone value, its epoch is
+ * 1970-01-01 00:00:00 (January 1st 1970, midnight) in an *unknown* timezone.
+ *
+ * Therefore, timestamp values without a timezone cannot be meaningfully
+ * interpreted as physical points in time, but only as calendar / clock
+ * indications ("wall clock time") in an unspecified timezone.
+ *
+ *   For example, the timestamp value 0 with an empty timezone string
+ *   corresponds to "January 1st 1970, 00h00" in an unknown timezone: there
+ *   is not enough information to interpret it as a well-defined physical
+ *   point in time.
+ *
+ * One consequence is that timestamp values without a timezone cannot
+ * be reliably compared or ordered, since they may have different points of
+ * reference.  In particular, it is *not* possible to interpret an unset
+ * or empty timezone as the same as "UTC".
+ *
+ * Conversion between timezones
+ * ----------------------------
+ *
+ * If a Timestamp column has a non-empty timezone, changing the timezone
+ * to a different non-empty value is a metadata-only operation:
+ * the timestamp values need not change as their point of reference remains
+ * the same (the Unix epoch).
+ *
+ * However, if a Timestamp column has no timezone value, changing it to a
+ * non-empty value requires to think about the desired semantics.
+ * One possibility is to assume that the original timestamp values are
+ * relative to the epoch of the timezone being set; timestamp values should
+ * then adjusted to the Unix epoch (for example, changing the timezone from
+ * empty to "Europe/Paris" would require converting the timestamp values
+ * from "Europe/Paris" to "UTC", which seems counter-intuitive but is
+ * nevertheless correct).
+ *
+ * Guidelines for encoding data from external libraries
+ * ----------------------------------------------------
+ *
+ * Date & time libraries often have multiple different data types for temporal
+ * data. In order to ease interoperability between different implementations the
+ * Arrow project has some recommendations for encoding these types into a Timestamp
+ * column.
+ *
+ * An "instant" represents a physical point in time that has no relevant timezone
+ * (for example, astronomical data). To encode an instant, use a Timestamp with
+ * the timezone string set to "UTC", and make sure the Timestamp values
+ * are relative to the UTC epoch (January 1st 1970, midnight).
+ *
+ * A "zoned date-time" represents a physical point in time annotated with an
+ * informative timezone (for example, the timezone in which the data was
+ * recorded).  To encode a zoned date-time, use a Timestamp with the timezone
+ * string set to the name of the timezone, and make sure the Timestamp values
+ * are relative to the UTC epoch (January 1st 1970, midnight).
+ *
+ *  (There is some ambiguity between an instant and a zoned date-time with the
+ *   UTC timezone.  Both of these are stored the same in Arrow.  Typically,
+ *   this distinction does not matter.  If it does, then an application should
+ *   use custom metadata or an extension type to distinguish between the two cases.)
+ *
+ * An "offset date-time" represents a physical point in time combined with an
+ * explicit offset from UTC.  To encode an offset date-time, use a Timestamp
+ * with the timezone string set to the numeric timezone offset string
+ * (e.g. "+03:00"), and make sure the Timestamp values are relative to
+ * the UTC epoch (January 1st 1970, midnight).
+ *
+ * A "naive date-time" (also called "local date-time" in some libraries)
+ * represents a wall clock time combined with a calendar date, but with
+ * no indication of how to map this information to a physical point in time.
+ * Naive date-times must be handled with care because of this missing
+ * information, and also because daylight saving time (DST) may make
+ * some values ambiguous or non-existent. A naive date-time may be
+ * stored as a struct with Date and Time fields. However, it may also be
+ * encoded into a Timestamp column with an empty timezone. The timestamp
+ * values should be computed "as if" the timezone of the date-time values
+ * was UTC; for example, the naive date-time "January 1st 1970, 00h00" would
+ * be encoded as timestamp value 0.
+ */
+export class Timestamp {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Timestamp {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsTimestamp(bb:flatbuffers.ByteBuffer, obj?:Timestamp):Timestamp {
+  return (obj || new Timestamp()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsTimestamp(bb:flatbuffers.ByteBuffer, obj?:Timestamp):Timestamp {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Timestamp()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+unit():TimeUnit {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt16(this.bb_pos + offset) : TimeUnit.SECOND;
+}
+
+/**
+ * The timezone is an optional string indicating the name of a timezone,
+ * one of:
+ *
+ * * As used in the Olson timezone database (the "tz database" or
+ *   "tzdata"), such as "America/New_York".
+ * * An absolute timezone offset of the form "+XX:XX" or "-XX:XX",
+ *   such as "+07:30".
+ *
+ * Whether a timezone string is present indicates different semantics about
+ * the data (see above).
+ */
+timezone():string|null
+timezone(optionalEncoding:flatbuffers.Encoding):string|Uint8Array|null
+timezone(optionalEncoding?:any):string|Uint8Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__string(this.bb_pos + offset, optionalEncoding) : null;
+}
+
+static startTimestamp(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addUnit(builder:flatbuffers.Builder, unit:TimeUnit) {
+  builder.addFieldInt16(0, unit, TimeUnit.SECOND);
+}
+
+static addTimezone(builder:flatbuffers.Builder, timezoneOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, timezoneOffset, 0);
+}
+
+static endTimestamp(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createTimestamp(builder:flatbuffers.Builder, unit:TimeUnit, timezoneOffset:flatbuffers.Offset):flatbuffers.Offset {
+  Timestamp.startTimestamp(builder);
+  Timestamp.addUnit(builder, unit);
+  Timestamp.addTimezone(builder, timezoneOffset);
+  return Timestamp.endTimestamp(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/type.ts b/igv_component/node_modules/apache-arrow/src/fb/type.ts
new file mode 100644
index 0000000000000000000000000000000000000000..c4691fb81ae5251578a42c733da0b1bc660ecb88
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/type.ts
@@ -0,0 +1,118 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import { Binary } from './binary.js';
+import { Bool } from './bool.js';
+import { Date } from './date.js';
+import { Decimal } from './decimal.js';
+import { Duration } from './duration.js';
+import { FixedSizeBinary } from './fixed-size-binary.js';
+import { FixedSizeList } from './fixed-size-list.js';
+import { FloatingPoint } from './floating-point.js';
+import { Int } from './int.js';
+import { Interval } from './interval.js';
+import { LargeBinary } from './large-binary.js';
+import { LargeList } from './large-list.js';
+import { LargeUtf8 } from './large-utf8.js';
+import { List } from './list.js';
+import { Map } from './map.js';
+import { Null } from './null.js';
+import { Struct_ } from './struct_.js';
+import { Time } from './time.js';
+import { Timestamp } from './timestamp.js';
+import { Union } from './union.js';
+import { Utf8 } from './utf8.js';
+
+
+/**
+ * ----------------------------------------------------------------------
+ * Top-level Type value, enabling extensible type-specific metadata. We can
+ * add new logical types to Type without breaking backwards compatibility
+ */
+export enum Type{
+  NONE = 0,
+  Null = 1,
+  Int = 2,
+  FloatingPoint = 3,
+  Binary = 4,
+  Utf8 = 5,
+  Bool = 6,
+  Decimal = 7,
+  Date = 8,
+  Time = 9,
+  Timestamp = 10,
+  Interval = 11,
+  List = 12,
+  Struct_ = 13,
+  Union = 14,
+  FixedSizeBinary = 15,
+  FixedSizeList = 16,
+  Map = 17,
+  Duration = 18,
+  LargeBinary = 19,
+  LargeUtf8 = 20,
+  LargeList = 21
+}
+
+export function unionToType(
+  type: Type,
+  accessor: (obj:Binary|Bool|Date|Decimal|Duration|FixedSizeBinary|FixedSizeList|FloatingPoint|Int|Interval|LargeBinary|LargeList|LargeUtf8|List|Map|Null|Struct_|Time|Timestamp|Union|Utf8) => Binary|Bool|Date|Decimal|Duration|FixedSizeBinary|FixedSizeList|FloatingPoint|Int|Interval|LargeBinary|LargeList|LargeUtf8|List|Map|Null|Struct_|Time|Timestamp|Union|Utf8|null
+): Binary|Bool|Date|Decimal|Duration|FixedSizeBinary|FixedSizeList|FloatingPoint|Int|Interval|LargeBinary|LargeList|LargeUtf8|List|Map|Null|Struct_|Time|Timestamp|Union|Utf8|null {
+  switch(Type[type]) {
+    case 'NONE': return null;
+    case 'Null': return accessor(new Null())! as Null;
+    case 'Int': return accessor(new Int())! as Int;
+    case 'FloatingPoint': return accessor(new FloatingPoint())! as FloatingPoint;
+    case 'Binary': return accessor(new Binary())! as Binary;
+    case 'Utf8': return accessor(new Utf8())! as Utf8;
+    case 'Bool': return accessor(new Bool())! as Bool;
+    case 'Decimal': return accessor(new Decimal())! as Decimal;
+    case 'Date': return accessor(new Date())! as Date;
+    case 'Time': return accessor(new Time())! as Time;
+    case 'Timestamp': return accessor(new Timestamp())! as Timestamp;
+    case 'Interval': return accessor(new Interval())! as Interval;
+    case 'List': return accessor(new List())! as List;
+    case 'Struct_': return accessor(new Struct_())! as Struct_;
+    case 'Union': return accessor(new Union())! as Union;
+    case 'FixedSizeBinary': return accessor(new FixedSizeBinary())! as FixedSizeBinary;
+    case 'FixedSizeList': return accessor(new FixedSizeList())! as FixedSizeList;
+    case 'Map': return accessor(new Map())! as Map;
+    case 'Duration': return accessor(new Duration())! as Duration;
+    case 'LargeBinary': return accessor(new LargeBinary())! as LargeBinary;
+    case 'LargeUtf8': return accessor(new LargeUtf8())! as LargeUtf8;
+    case 'LargeList': return accessor(new LargeList())! as LargeList;
+    default: return null;
+  }
+}
+
+export function unionListToType(
+  type: Type,
+  accessor: (index: number, obj:Binary|Bool|Date|Decimal|Duration|FixedSizeBinary|FixedSizeList|FloatingPoint|Int|Interval|LargeBinary|LargeList|LargeUtf8|List|Map|Null|Struct_|Time|Timestamp|Union|Utf8) => Binary|Bool|Date|Decimal|Duration|FixedSizeBinary|FixedSizeList|FloatingPoint|Int|Interval|LargeBinary|LargeList|LargeUtf8|List|Map|Null|Struct_|Time|Timestamp|Union|Utf8|null,
+  index: number
+): Binary|Bool|Date|Decimal|Duration|FixedSizeBinary|FixedSizeList|FloatingPoint|Int|Interval|LargeBinary|LargeList|LargeUtf8|List|Map|Null|Struct_|Time|Timestamp|Union|Utf8|null {
+  switch(Type[type]) {
+    case 'NONE': return null;
+    case 'Null': return accessor(index, new Null())! as Null;
+    case 'Int': return accessor(index, new Int())! as Int;
+    case 'FloatingPoint': return accessor(index, new FloatingPoint())! as FloatingPoint;
+    case 'Binary': return accessor(index, new Binary())! as Binary;
+    case 'Utf8': return accessor(index, new Utf8())! as Utf8;
+    case 'Bool': return accessor(index, new Bool())! as Bool;
+    case 'Decimal': return accessor(index, new Decimal())! as Decimal;
+    case 'Date': return accessor(index, new Date())! as Date;
+    case 'Time': return accessor(index, new Time())! as Time;
+    case 'Timestamp': return accessor(index, new Timestamp())! as Timestamp;
+    case 'Interval': return accessor(index, new Interval())! as Interval;
+    case 'List': return accessor(index, new List())! as List;
+    case 'Struct_': return accessor(index, new Struct_())! as Struct_;
+    case 'Union': return accessor(index, new Union())! as Union;
+    case 'FixedSizeBinary': return accessor(index, new FixedSizeBinary())! as FixedSizeBinary;
+    case 'FixedSizeList': return accessor(index, new FixedSizeList())! as FixedSizeList;
+    case 'Map': return accessor(index, new Map())! as Map;
+    case 'Duration': return accessor(index, new Duration())! as Duration;
+    case 'LargeBinary': return accessor(index, new LargeBinary())! as LargeBinary;
+    case 'LargeUtf8': return accessor(index, new LargeUtf8())! as LargeUtf8;
+    case 'LargeList': return accessor(index, new LargeList())! as LargeList;
+    default: return null;
+  }
+}
+
diff --git a/igv_component/node_modules/apache-arrow/src/fb/union-mode.ts b/igv_component/node_modules/apache-arrow/src/fb/union-mode.ts
new file mode 100644
index 0000000000000000000000000000000000000000..04c1d448bf0d00ab9de208a05b5fbd480a3c08c9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/union-mode.ts
@@ -0,0 +1,7 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+export enum UnionMode{
+  Sparse = 0,
+  Dense = 1
+}
+
diff --git a/igv_component/node_modules/apache-arrow/src/fb/union.ts b/igv_component/node_modules/apache-arrow/src/fb/union.ts
new file mode 100644
index 0000000000000000000000000000000000000000..4403f46194b199ee0858e0a7f82cec3131595496
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/union.ts
@@ -0,0 +1,92 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+import { UnionMode } from './union-mode.js';
+
+
+/**
+ * A union is a complex type with children in Field
+ * By default ids in the type vector refer to the offsets in the children
+ * optionally typeIds provides an indirection between the child offset and the type id
+ * for each child `typeIds[offset]` is the id used in the type vector
+ */
+export class Union {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Union {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsUnion(bb:flatbuffers.ByteBuffer, obj?:Union):Union {
+  return (obj || new Union()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsUnion(bb:flatbuffers.ByteBuffer, obj?:Union):Union {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Union()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+mode():UnionMode {
+  const offset = this.bb!.__offset(this.bb_pos, 4);
+  return offset ? this.bb!.readInt16(this.bb_pos + offset) : UnionMode.Sparse;
+}
+
+typeIds(index: number):number|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.readInt32(this.bb!.__vector(this.bb_pos + offset) + index * 4) : 0;
+}
+
+typeIdsLength():number {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? this.bb!.__vector_len(this.bb_pos + offset) : 0;
+}
+
+typeIdsArray():Int32Array|null {
+  const offset = this.bb!.__offset(this.bb_pos, 6);
+  return offset ? new Int32Array(this.bb!.bytes().buffer, this.bb!.bytes().byteOffset + this.bb!.__vector(this.bb_pos + offset), this.bb!.__vector_len(this.bb_pos + offset)) : null;
+}
+
+static startUnion(builder:flatbuffers.Builder) {
+  builder.startObject(2);
+}
+
+static addMode(builder:flatbuffers.Builder, mode:UnionMode) {
+  builder.addFieldInt16(0, mode, UnionMode.Sparse);
+}
+
+static addTypeIds(builder:flatbuffers.Builder, typeIdsOffset:flatbuffers.Offset) {
+  builder.addFieldOffset(1, typeIdsOffset, 0);
+}
+
+static createTypeIdsVector(builder:flatbuffers.Builder, data:number[]|Int32Array):flatbuffers.Offset;
+/**
+ * @deprecated This Uint8Array overload will be removed in the future.
+ */
+static createTypeIdsVector(builder:flatbuffers.Builder, data:number[]|Uint8Array):flatbuffers.Offset;
+static createTypeIdsVector(builder:flatbuffers.Builder, data:number[]|Int32Array|Uint8Array):flatbuffers.Offset {
+  builder.startVector(4, data.length, 4);
+  for (let i = data.length - 1; i >= 0; i--) {
+    builder.addInt32(data[i]!);
+  }
+  return builder.endVector();
+}
+
+static startTypeIdsVector(builder:flatbuffers.Builder, numElems:number) {
+  builder.startVector(4, numElems, 4);
+}
+
+static endUnion(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createUnion(builder:flatbuffers.Builder, mode:UnionMode, typeIdsOffset:flatbuffers.Offset):flatbuffers.Offset {
+  Union.startUnion(builder);
+  Union.addMode(builder, mode);
+  Union.addTypeIds(builder, typeIdsOffset);
+  return Union.endUnion(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/fb/utf8.ts b/igv_component/node_modules/apache-arrow/src/fb/utf8.ts
new file mode 100644
index 0000000000000000000000000000000000000000..87e68c090ed2936531d37d25c7254ed9b572a849
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/fb/utf8.ts
@@ -0,0 +1,39 @@
+// automatically generated by the FlatBuffers compiler, do not modify
+
+import * as flatbuffers from 'flatbuffers';
+
+/**
+ * Unicode with UTF-8 encoding
+ */
+export class Utf8 {
+  bb: flatbuffers.ByteBuffer|null = null;
+  bb_pos = 0;
+__init(i:number, bb:flatbuffers.ByteBuffer):Utf8 {
+  this.bb_pos = i;
+  this.bb = bb;
+  return this;
+}
+
+static getRootAsUtf8(bb:flatbuffers.ByteBuffer, obj?:Utf8):Utf8 {
+  return (obj || new Utf8()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static getSizePrefixedRootAsUtf8(bb:flatbuffers.ByteBuffer, obj?:Utf8):Utf8 {
+  bb.setPosition(bb.position() + flatbuffers.SIZE_PREFIX_LENGTH);
+  return (obj || new Utf8()).__init(bb.readInt32(bb.position()) + bb.position(), bb);
+}
+
+static startUtf8(builder:flatbuffers.Builder) {
+  builder.startObject(0);
+}
+
+static endUtf8(builder:flatbuffers.Builder):flatbuffers.Offset {
+  const offset = builder.endObject();
+  return offset;
+}
+
+static createUtf8(builder:flatbuffers.Builder):flatbuffers.Offset {
+  Utf8.startUtf8(builder);
+  return Utf8.endUtf8(builder);
+}
+}
diff --git a/igv_component/node_modules/apache-arrow/src/interfaces.ts b/igv_component/node_modules/apache-arrow/src/interfaces.ts
new file mode 100644
index 0000000000000000000000000000000000000000..8d6129591904673da343774718a5b7c76f0f208d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/interfaces.ts
@@ -0,0 +1,326 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import * as type from './type.js';
+import type { Type } from './enum.js';
+import type { DataType } from './type.js';
+import type { Builder } from './builder.js';
+import type { BuilderOptions } from './builder.js';
+import type { BoolBuilder } from './builder/bool.js';
+import type { NullBuilder } from './builder/null.js';
+import type { DateBuilder, DateDayBuilder, DateMillisecondBuilder } from './builder/date.js';
+import type { DecimalBuilder } from './builder/decimal.js';
+import type { DictionaryBuilder } from './builder/dictionary.js';
+import type { FixedSizeBinaryBuilder } from './builder/fixedsizebinary.js';
+import type { FloatBuilder, Float16Builder, Float32Builder, Float64Builder } from './builder/float.js';
+import type { IntBuilder, Int8Builder, Int16Builder, Int32Builder, Int64Builder, Uint8Builder, Uint16Builder, Uint32Builder, Uint64Builder } from './builder/int.js';
+import type { TimeBuilder, TimeSecondBuilder, TimeMillisecondBuilder, TimeMicrosecondBuilder, TimeNanosecondBuilder } from './builder/time.js';
+import type { TimestampBuilder, TimestampSecondBuilder, TimestampMillisecondBuilder, TimestampMicrosecondBuilder, TimestampNanosecondBuilder } from './builder/timestamp.js';
+import type { IntervalBuilder, IntervalDayTimeBuilder, IntervalYearMonthBuilder } from './builder/interval.js';
+import type { Utf8Builder } from './builder/utf8.js';
+import type { BinaryBuilder } from './builder/binary.js';
+import type { ListBuilder } from './builder/list.js';
+import type { FixedSizeListBuilder } from './builder/fixedsizelist.js';
+import type { MapBuilder } from './builder/map.js';
+import type { StructBuilder } from './builder/struct.js';
+import type { UnionBuilder, SparseUnionBuilder, DenseUnionBuilder } from './builder/union.js';
+
+/** @ignore */ type FloatArray = Float32Array | Float64Array;
+/** @ignore */ type IntArray = Int8Array | Int16Array | Int32Array;
+/** @ignore */ type UintArray = Uint8Array | Uint16Array | Uint32Array | Uint8ClampedArray;
+/** @ignore */
+export type TypedArray = FloatArray | IntArray | UintArray;
+/** @ignore */
+export type BigIntArray = BigInt64Array | BigUint64Array;
+
+/** @ignore */
+export interface TypedArrayConstructor<T extends TypedArray> {
+    readonly prototype: T;
+    new(length?: number): T;
+    new(array: Iterable<number>): T;
+    new(buffer: ArrayBufferLike, byteOffset?: number, length?: number): T;
+    /**
+      * The size in bytes of each element in the array.
+      */
+    readonly BYTES_PER_ELEMENT: number;
+    /**
+      * Returns a new array from a set of elements.
+      * @param items A set of elements to include in the new array object.
+      */
+    of(...items: number[]): T;
+    /**
+      * Creates an array from an array-like or iterable object.
+      * @param arrayLike An array-like or iterable object to convert to an array.
+      * @param mapfn A mapping function to call on every element of the array.
+      * @param thisArg Value of 'this' used to invoke the mapfn.
+      */
+    from(arrayLike: ArrayLike<number>, mapfn?: (v: number, k: number) => number, thisArg?: any): T;
+    from<U>(arrayLike: ArrayLike<U>, mapfn: (v: U, k: number) => number, thisArg?: any): T;
+}
+
+/** @ignore */
+export interface BigIntArrayConstructor<T extends BigIntArray> {
+    readonly prototype: T;
+    new(length?: number): T;
+    new(array: Iterable<bigint>): T;
+    new(buffer: ArrayBufferLike, byteOffset?: number, length?: number): T;
+    /**
+      * The size in bytes of each element in the array.
+      */
+    readonly BYTES_PER_ELEMENT: number;
+    /**
+      * Returns a new array from a set of elements.
+      * @param items A set of elements to include in the new array object.
+      */
+    of(...items: bigint[]): T;
+    /**
+      * Creates an array from an array-like or iterable object.
+      * @param arrayLike An array-like or iterable object to convert to an array.
+      * @param mapfn A mapping function to call on every element of the array.
+      * @param thisArg Value of 'this' used to invoke the mapfn.
+      */
+    from(arrayLike: ArrayLike<bigint>, mapfn?: (v: bigint, k: number) => bigint, thisArg?: any): T;
+    from<U>(arrayLike: ArrayLike<U>, mapfn: (v: U, k: number) => bigint, thisArg?: any): T;
+}
+
+/** @ignore */
+export type BuilderCtorArgs<
+    T extends BuilderType<R, any>,
+    R extends DataType = any,
+    TArgs extends any[] = any[],
+    TCtor extends new (type: R, ...args: TArgs) => T =
+    new (type: R, ...args: TArgs) => T
+    > = TCtor extends new (type: R, ...args: infer TArgs) => T ? TArgs : never;
+
+/**
+ * Obtain the constructor function of an instance type
+ * @ignore
+ */
+export type ConstructorType<
+    T,
+    TCtor extends new (...args: any[]) => T =
+    new (...args: any[]) => T
+    > = TCtor extends new (...args: any[]) => T ? TCtor : never;
+
+/** @ignore */
+export type BuilderCtorType<
+    T extends BuilderType<R, any>,
+    R extends DataType = any,
+    TCtor extends new (options: BuilderOptions<R, any>) => T =
+    new (options: BuilderOptions<R, any>) => T
+    > = TCtor extends new (options: BuilderOptions<R, any>) => T ? TCtor : never;
+
+/** @ignore */
+export type BuilderType<T extends Type | DataType = any, TNull = any> =
+    T extends Type ? TypeToBuilder<T, TNull> :
+    T extends DataType ? DataTypeToBuilder<T, TNull> :
+    Builder<any, TNull>
+    ;
+
+/** @ignore */
+export type BuilderCtor<T extends Type | DataType = any> =
+    T extends Type ? BuilderCtorType<BuilderType<T>> :
+    T extends DataType ? BuilderCtorType<BuilderType<T>> :
+    BuilderCtorType<Builder>
+    ;
+
+/** @ignore */
+export type DataTypeCtor<T extends Type | DataType = any> =
+    T extends DataType ? ConstructorType<T> :
+    T extends Type ? ConstructorType<TypeToDataType<T>> :
+    never
+    ;
+
+/** @ignore */
+export type TypedArrayDataType<T extends TypedArray | BigIntArray> =
+    T extends Int8Array ? type.Int8 :
+    T extends Int16Array ? type.Int16 :
+    T extends Int32Array ? type.Int32 :
+    T extends BigInt64Array ? type.Int64 :
+    T extends Uint8Array ? type.Uint8 :
+    T extends Uint8ClampedArray ? type.Uint8 :
+    T extends Uint16Array ? type.Uint16 :
+    T extends Uint32Array ? type.Uint32 :
+    T extends BigUint64Array ? type.Uint64 :
+    T extends Float32Array ? type.Float32 :
+    T extends Float64Array ? type.Float64 :
+    never;
+
+/** @ignore */
+export type JavaScriptDataType<T> = JavaScriptArrayDataType<T[]>;
+
+/** @ignore */
+export type JavaScriptArrayDataType<T extends readonly unknown[]> =
+    T extends readonly (null | undefined)[] ? type.Null :
+    T extends readonly (null | undefined | boolean)[] ? type.Bool :
+    T extends readonly (null | undefined | string)[] ? type.Dictionary<type.Utf8, type.Int32> :
+    T extends readonly (null | undefined | Date)[] ? type.Date_ :
+    T extends readonly (null | undefined | bigint)[] ? type.Int64 :
+    T extends readonly (null | undefined | number)[] ? type.Float64 :
+    T extends readonly (null | undefined | readonly (infer U)[])[] ? type.List<JavaScriptDataType<U>> :
+    T extends readonly (null | undefined | Record<string, unknown>)[] ? T extends readonly (null | undefined | infer U)[] ? type.Struct<{ [P in keyof U]: JavaScriptDataType<U[P]> }> : never :
+    never;
+
+/** @ignore */
+export type ArrayDataType<T> =
+    T extends TypedArray | BigIntArray ? TypedArrayDataType<T> :
+    T extends readonly unknown[] ? JavaScriptArrayDataType<T> :
+    never;
+
+/** @ignore */
+export type TypeToDataType<T extends Type> = {
+    [key: number]: type.DataType;
+    [Type.Null]: type.Null;
+    [Type.Bool]: type.Bool;
+    [Type.Int]: type.Int;
+    [Type.Int16]: type.Int16;
+    [Type.Int32]: type.Int32;
+    [Type.Int64]: type.Int64;
+    [Type.Uint8]: type.Uint8;
+    [Type.Uint16]: type.Uint16;
+    [Type.Uint32]: type.Uint32;
+    [Type.Uint64]: type.Uint64;
+    [Type.Int8]: type.Int8;
+    [Type.Float16]: type.Float16;
+    [Type.Float32]: type.Float32;
+    [Type.Float64]: type.Float64;
+    [Type.Float]: type.Float;
+    [Type.Utf8]: type.Utf8;
+    [Type.Binary]: type.Binary;
+    [Type.FixedSizeBinary]: type.FixedSizeBinary;
+    [Type.Date]: type.Date_;
+    [Type.DateDay]: type.DateDay;
+    [Type.DateMillisecond]: type.DateMillisecond;
+    [Type.Timestamp]: type.Timestamp;
+    [Type.TimestampSecond]: type.TimestampSecond;
+    [Type.TimestampMillisecond]: type.TimestampMillisecond;
+    [Type.TimestampMicrosecond]: type.TimestampMicrosecond;
+    [Type.TimestampNanosecond]: type.TimestampNanosecond;
+    [Type.Time]: type.Time;
+    [Type.TimeSecond]: type.TimeSecond;
+    [Type.TimeMillisecond]: type.TimeMillisecond;
+    [Type.TimeMicrosecond]: type.TimeMicrosecond;
+    [Type.TimeNanosecond]: type.TimeNanosecond;
+    [Type.Decimal]: type.Decimal;
+    [Type.Union]: type.Union;
+    [Type.DenseUnion]: type.DenseUnion;
+    [Type.SparseUnion]: type.SparseUnion;
+    [Type.Interval]: type.Interval;
+    [Type.IntervalDayTime]: type.IntervalDayTime;
+    [Type.IntervalYearMonth]: type.IntervalYearMonth;
+    [Type.Map]: type.Map_;
+    [Type.List]: type.List;
+    [Type.Struct]: type.Struct;
+    [Type.Dictionary]: type.Dictionary;
+    [Type.FixedSizeList]: type.FixedSizeList;
+}[T];
+
+/** @ignore */
+type TypeToBuilder<T extends Type = any, TNull = any> = {
+    [key: number]: Builder;
+    [Type.Null]: NullBuilder<TNull>;
+    [Type.Bool]: BoolBuilder<TNull>;
+    [Type.Int8]: Int8Builder<TNull>;
+    [Type.Int16]: Int16Builder<TNull>;
+    [Type.Int32]: Int32Builder<TNull>;
+    [Type.Int64]: Int64Builder<TNull>;
+    [Type.Uint8]: Uint8Builder<TNull>;
+    [Type.Uint16]: Uint16Builder<TNull>;
+    [Type.Uint32]: Uint32Builder<TNull>;
+    [Type.Uint64]: Uint64Builder<TNull>;
+    [Type.Int]: IntBuilder<any, TNull>;
+    [Type.Float16]: Float16Builder<TNull>;
+    [Type.Float32]: Float32Builder<TNull>;
+    [Type.Float64]: Float64Builder<TNull>;
+    [Type.Float]: FloatBuilder<any, TNull>;
+    [Type.Utf8]: Utf8Builder<TNull>;
+    [Type.Binary]: BinaryBuilder<TNull>;
+    [Type.FixedSizeBinary]: FixedSizeBinaryBuilder<TNull>;
+    [Type.Date]: DateBuilder<any, TNull>;
+    [Type.DateDay]: DateDayBuilder<TNull>;
+    [Type.DateMillisecond]: DateMillisecondBuilder<TNull>;
+    [Type.Timestamp]: TimestampBuilder<any, TNull>;
+    [Type.TimestampSecond]: TimestampSecondBuilder<TNull>;
+    [Type.TimestampMillisecond]: TimestampMillisecondBuilder<TNull>;
+    [Type.TimestampMicrosecond]: TimestampMicrosecondBuilder<TNull>;
+    [Type.TimestampNanosecond]: TimestampNanosecondBuilder<TNull>;
+    [Type.Time]: TimeBuilder<any, TNull>;
+    [Type.TimeSecond]: TimeSecondBuilder<TNull>;
+    [Type.TimeMillisecond]: TimeMillisecondBuilder<TNull>;
+    [Type.TimeMicrosecond]: TimeMicrosecondBuilder<TNull>;
+    [Type.TimeNanosecond]: TimeNanosecondBuilder<TNull>;
+    [Type.Decimal]: DecimalBuilder<TNull>;
+    [Type.Union]: UnionBuilder<any, TNull>;
+    [Type.DenseUnion]: DenseUnionBuilder<any, TNull>;
+    [Type.SparseUnion]: SparseUnionBuilder<any, TNull>;
+    [Type.Interval]: IntervalBuilder<any, TNull>;
+    [Type.IntervalDayTime]: IntervalDayTimeBuilder<TNull>;
+    [Type.IntervalYearMonth]: IntervalYearMonthBuilder<TNull>;
+    [Type.Map]: MapBuilder<any, any, TNull>;
+    [Type.List]: ListBuilder<any, TNull>;
+    [Type.Struct]: StructBuilder<any, TNull>;
+    [Type.Dictionary]: DictionaryBuilder<any, TNull>;
+    [Type.FixedSizeList]: FixedSizeListBuilder<any, TNull>;
+}[T];
+
+/** @ignore */
+type DataTypeToBuilder<T extends DataType = any, TNull = any> = {
+    [key: number]: Builder<any, TNull>;
+    [Type.Null]: T extends type.Null ? NullBuilder<TNull> : never;
+    [Type.Bool]: T extends type.Bool ? BoolBuilder<TNull> : never;
+    [Type.Int8]: T extends type.Int8 ? Int8Builder<TNull> : never;
+    [Type.Int16]: T extends type.Int16 ? Int16Builder<TNull> : never;
+    [Type.Int32]: T extends type.Int32 ? Int32Builder<TNull> : never;
+    [Type.Int64]: T extends type.Int64 ? Int64Builder<TNull> : never;
+    [Type.Uint8]: T extends type.Uint8 ? Uint8Builder<TNull> : never;
+    [Type.Uint16]: T extends type.Uint16 ? Uint16Builder<TNull> : never;
+    [Type.Uint32]: T extends type.Uint32 ? Uint32Builder<TNull> : never;
+    [Type.Uint64]: T extends type.Uint64 ? Uint64Builder<TNull> : never;
+    [Type.Int]: T extends type.Int ? IntBuilder<T, TNull> : never;
+    [Type.Float16]: T extends type.Float16 ? Float16Builder<TNull> : never;
+    [Type.Float32]: T extends type.Float32 ? Float32Builder<TNull> : never;
+    [Type.Float64]: T extends type.Float64 ? Float64Builder<TNull> : never;
+    [Type.Float]: T extends type.Float ? FloatBuilder<T, TNull> : never;
+    [Type.Utf8]: T extends type.Utf8 ? Utf8Builder<TNull> : never;
+    [Type.Binary]: T extends type.Binary ? BinaryBuilder<TNull> : never;
+    [Type.FixedSizeBinary]: T extends type.FixedSizeBinary ? FixedSizeBinaryBuilder<TNull> : never;
+    [Type.Date]: T extends type.Date_ ? DateBuilder<T, TNull> : never;
+    [Type.DateDay]: T extends type.DateDay ? DateDayBuilder<TNull> : never;
+    [Type.DateMillisecond]: T extends type.DateMillisecond ? DateMillisecondBuilder<TNull> : never;
+    [Type.Timestamp]: T extends type.Timestamp ? TimestampBuilder<T, TNull> : never;
+    [Type.TimestampSecond]: T extends type.TimestampSecond ? TimestampSecondBuilder<TNull> : never;
+    [Type.TimestampMillisecond]: T extends type.TimestampMillisecond ? TimestampMillisecondBuilder<TNull> : never;
+    [Type.TimestampMicrosecond]: T extends type.TimestampMicrosecond ? TimestampMicrosecondBuilder<TNull> : never;
+    [Type.TimestampNanosecond]: T extends type.TimestampNanosecond ? TimestampNanosecondBuilder<TNull> : never;
+    [Type.Time]: T extends type.Time ? TimeBuilder<T, TNull> : never;
+    [Type.TimeSecond]: T extends type.TimeSecond ? TimeSecondBuilder<TNull> : never;
+    [Type.TimeMillisecond]: T extends type.TimeMillisecond ? TimeMillisecondBuilder<TNull> : never;
+    [Type.TimeMicrosecond]: T extends type.TimeMicrosecond ? TimeMicrosecondBuilder<TNull> : never;
+    [Type.TimeNanosecond]: T extends type.TimeNanosecond ? TimeNanosecondBuilder<TNull> : never;
+    [Type.Decimal]: T extends type.Decimal ? DecimalBuilder<TNull> : never;
+    [Type.Union]: T extends type.Union ? UnionBuilder<T, TNull> : never;
+    [Type.DenseUnion]: T extends type.DenseUnion ? DenseUnionBuilder<T, TNull> : never;
+    [Type.SparseUnion]: T extends type.SparseUnion ? SparseUnionBuilder<T, TNull> : never;
+    [Type.Interval]: T extends type.Interval ? IntervalBuilder<T, TNull> : never;
+    [Type.IntervalDayTime]: T extends type.IntervalDayTime ? IntervalDayTimeBuilder<TNull> : never;
+    [Type.IntervalYearMonth]: T extends type.IntervalYearMonth ? IntervalYearMonthBuilder<TNull> : never;
+    [Type.Map]: T extends type.Map_ ? MapBuilder<T['keyType'], T['valueType'], TNull> : never;
+    [Type.List]: T extends type.List ? ListBuilder<T['valueType'], TNull> : never;
+    [Type.Struct]: T extends type.Struct ? StructBuilder<T['dataTypes'], TNull> : never;
+    [Type.Dictionary]: T extends type.Dictionary ? DictionaryBuilder<T, TNull> : never;
+    [Type.FixedSizeList]: T extends type.FixedSizeList ? FixedSizeListBuilder<T['valueType'], TNull> : never;
+}[T['TType']];
diff --git a/igv_component/node_modules/apache-arrow/src/io/adapters.ts b/igv_component/node_modules/apache-arrow/src/io/adapters.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d0c8f7a5a99f07f71f9dc6dffc5e128d154c28f1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/io/adapters.ts
@@ -0,0 +1,348 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import {
+    toUint8Array,
+    joinUint8Arrays,
+    ArrayBufferViewInput,
+    toUint8ArrayIterator,
+    toUint8ArrayAsyncIterator
+} from '../util/buffer.js';
+
+import { ReadableDOMStreamOptions } from './interfaces.js';
+
+type Uint8ArrayGenerator = Generator<Uint8Array, null, { cmd: 'peek' | 'read'; size: number }>;
+type AsyncUint8ArrayGenerator = AsyncGenerator<Uint8Array, null, { cmd: 'peek' | 'read'; size: number }>;
+
+/** @ignore */
+export default {
+    fromIterable<T extends ArrayBufferViewInput>(source: Iterable<T> | T): Uint8ArrayGenerator {
+        return pump(fromIterable<T>(source));
+    },
+    fromAsyncIterable<T extends ArrayBufferViewInput>(source: AsyncIterable<T> | PromiseLike<T>): AsyncUint8ArrayGenerator {
+        return pump(fromAsyncIterable<T>(source));
+    },
+    fromDOMStream<T extends ArrayBufferViewInput>(source: ReadableStream<T>): AsyncUint8ArrayGenerator {
+        return pump(fromDOMStream<T>(source));
+    },
+    fromNodeStream(stream: NodeJS.ReadableStream): AsyncUint8ArrayGenerator {
+        return pump(fromNodeStream(stream));
+    },
+    // @ts-ignore
+    toDOMStream<T>(source: Iterable<T> | AsyncIterable<T>, options?: ReadableDOMStreamOptions): ReadableStream<T> {
+        throw new Error(`"toDOMStream" not available in this environment`);
+    },
+    // @ts-ignore
+    toNodeStream<T>(source: Iterable<T> | AsyncIterable<T>, options?: import('stream').ReadableOptions): import('stream').Readable {
+        throw new Error(`"toNodeStream" not available in this environment`);
+    },
+};
+
+/** @ignore */
+const pump = <T extends Uint8ArrayGenerator | AsyncUint8ArrayGenerator>(iterator: T) => { iterator.next(); return iterator; };
+
+/** @ignore */
+function* fromIterable<T extends ArrayBufferViewInput>(source: Iterable<T> | T): Uint8ArrayGenerator {
+
+    let done: boolean | undefined, threw = false;
+    let buffers: Uint8Array[] = [], buffer: Uint8Array;
+    let cmd: 'peek' | 'read', size: number, bufferLength = 0;
+
+    function byteRange() {
+        if (cmd === 'peek') {
+            return joinUint8Arrays(buffers, size)[0];
+        }
+        [buffer, buffers, bufferLength] = joinUint8Arrays(buffers, size);
+        return buffer;
+    }
+
+    // Yield so the caller can inject the read command before creating the source Iterator
+    ({ cmd, size } = yield <any>null);
+
+    // initialize the iterator
+    const it = toUint8ArrayIterator(source)[Symbol.iterator]();
+
+    try {
+        do {
+            // read the next value
+            ({ done, value: buffer } = Number.isNaN(size - bufferLength) ?
+                it.next() : it.next(size - bufferLength));
+            // if chunk is not null or empty, push it onto the queue
+            if (!done && buffer.byteLength > 0) {
+                buffers.push(buffer);
+                bufferLength += buffer.byteLength;
+            }
+            // If we have enough bytes in our buffer, yield chunks until we don't
+            if (done || size <= bufferLength) {
+                do {
+                    ({ cmd, size } = yield byteRange());
+                } while (size < bufferLength);
+            }
+        } while (!done);
+    } catch (e) {
+        (threw = true) && (typeof it.throw === 'function') && (it.throw(e));
+    } finally {
+        (threw === false) && (typeof it.return === 'function') && (it.return(null!));
+    }
+    return null;
+}
+
+/** @ignore */
+async function* fromAsyncIterable<T extends ArrayBufferViewInput>(source: AsyncIterable<T> | PromiseLike<T>): AsyncUint8ArrayGenerator {
+
+    let done: boolean | undefined, threw = false;
+    let buffers: Uint8Array[] = [], buffer: Uint8Array;
+    let cmd: 'peek' | 'read', size: number, bufferLength = 0;
+
+    function byteRange() {
+        if (cmd === 'peek') {
+            return joinUint8Arrays(buffers, size)[0];
+        }
+        [buffer, buffers, bufferLength] = joinUint8Arrays(buffers, size);
+        return buffer;
+    }
+
+    // Yield so the caller can inject the read command before creating the source AsyncIterator
+    ({ cmd, size } = (yield <any>null)!);
+
+    // initialize the iterator
+    const it = toUint8ArrayAsyncIterator(source)[Symbol.asyncIterator]();
+
+    try {
+        do {
+            // read the next value
+            ({ done, value: buffer } = Number.isNaN(size - bufferLength)
+                ? await it.next()
+                : await it.next(size - bufferLength));
+            // if chunk is not null or empty, push it onto the queue
+            if (!done && buffer.byteLength > 0) {
+                buffers.push(buffer);
+                bufferLength += buffer.byteLength;
+            }
+            // If we have enough bytes in our buffer, yield chunks until we don't
+            if (done || size <= bufferLength) {
+                do {
+                    ({ cmd, size } = yield byteRange());
+                } while (size < bufferLength);
+            }
+        } while (!done);
+    } catch (e) {
+        (threw = true) && (typeof it.throw === 'function') && (await it.throw(e));
+    } finally {
+        (threw === false) && (typeof it.return === 'function') && (await it.return(new Uint8Array(0)));
+    }
+    return null;
+}
+
+// All this manual Uint8Array chunk management can be avoided if/when engines
+// add support for ArrayBuffer.transfer() or ArrayBuffer.prototype.realloc():
+// https://github.com/domenic/proposal-arraybuffer-transfer
+/** @ignore */
+async function* fromDOMStream<T extends ArrayBufferViewInput>(source: ReadableStream<T>): AsyncUint8ArrayGenerator {
+
+    let done = false, threw = false;
+    let buffers: Uint8Array[] = [], buffer: Uint8Array;
+    let cmd: 'peek' | 'read', size: number, bufferLength = 0;
+
+    function byteRange() {
+        if (cmd === 'peek') {
+            return joinUint8Arrays(buffers, size)[0];
+        }
+        [buffer, buffers, bufferLength] = joinUint8Arrays(buffers, size);
+        return buffer;
+    }
+
+    // Yield so the caller can inject the read command before we establish the ReadableStream lock
+    ({ cmd, size } = yield <any>null);
+
+    // initialize the reader and lock the stream
+    const it = new AdaptiveByteReader(source);
+
+    try {
+        do {
+            // read the next value
+            ({ done, value: buffer } = Number.isNaN(size - bufferLength)
+                ? await it['read']()
+                : await it['read'](size - bufferLength));
+            // if chunk is not null or empty, push it onto the queue
+            if (!done && buffer.byteLength > 0) {
+                buffers.push(toUint8Array(buffer));
+                bufferLength += buffer.byteLength;
+            }
+            // If we have enough bytes in our buffer, yield chunks until we don't
+            if (done || size <= bufferLength) {
+                do {
+                    ({ cmd, size } = yield byteRange());
+                } while (size < bufferLength);
+            }
+        } while (!done);
+    } catch (e) {
+        (threw = true) && (await it['cancel'](e));
+    } finally {
+        (threw === false) ? (await it['cancel']())
+            : source['locked'] && it.releaseLock();
+    }
+    return null;
+}
+
+/** @ignore */
+class AdaptiveByteReader<T extends ArrayBufferViewInput> {
+
+    private reader: ReadableStreamDefaultReader<T> | null = null;
+
+    constructor(private source: ReadableStream<T>) {
+        this.reader = this.source['getReader']();
+        // We have to catch and swallow errors here to avoid uncaught promise rejection exceptions
+        // that seem to be raised when we call `releaseLock()` on this reader. I'm still mystified
+        // about why these errors are raised, but I'm sure there's some important spec reason that
+        // I haven't considered. I hate to employ such an anti-pattern here, but it seems like the
+        // only solution in this case :/
+        this.reader['closed'].catch(() => { });
+    }
+
+    get closed(): Promise<void> {
+        return this.reader ? this.reader['closed'].catch(() => { }) : Promise.resolve();
+    }
+
+    releaseLock(): void {
+        if (this.reader) {
+            this.reader.releaseLock();
+        }
+        this.reader = null;
+    }
+
+    async cancel(reason?: any): Promise<void> {
+        const { reader, source } = this;
+        reader && (await reader['cancel'](reason).catch(() => { }));
+        source && (source['locked'] && this.releaseLock());
+    }
+
+    async read(size?: number): Promise<ReadableStreamReadValueResult<Uint8Array>> {
+        if (size === 0) {
+            return { done: this.reader == null, value: new Uint8Array(0) } as ReadableStreamReadValueResult<Uint8Array>;
+        }
+        const result = await this.reader!.read() as ReadableStreamReadValueResult<any>;
+        !result.done && (result.value = toUint8Array(result));
+        return result;
+    }
+}
+
+/** @ignore */
+type EventName = 'end' | 'error' | 'readable';
+/** @ignore */
+type Event = [EventName, (_: any) => void, Promise<[EventName, Error | null]>];
+/** @ignore */
+const onEvent = <T extends string>(stream: NodeJS.ReadableStream, event: T) => {
+    const handler = (_: any) => resolve([event, _]);
+    let resolve: (value: [T, any] | PromiseLike<[T, any]>) => void;
+    return [event, handler, new Promise<[T, any]>(
+        (r) => (resolve = r) && stream['once'](event, handler)
+    )] as Event;
+};
+
+/** @ignore */
+async function* fromNodeStream(stream: NodeJS.ReadableStream): AsyncUint8ArrayGenerator {
+
+    const events: Event[] = [];
+    let event: EventName = 'error';
+    let done = false, err: Error | null = null;
+    let cmd: 'peek' | 'read', size: number, bufferLength = 0;
+    let buffers: Uint8Array[] = [], buffer: Uint8Array | Buffer | string;
+
+    function byteRange() {
+        if (cmd === 'peek') {
+            return joinUint8Arrays(buffers, size)[0];
+        }
+        [buffer, buffers, bufferLength] = joinUint8Arrays(buffers, size);
+        return buffer;
+    }
+
+    // Yield so the caller can inject the read command before we
+    // add the listener for the source stream's 'readable' event.
+    ({ cmd, size } = yield <any>null);
+
+    // ignore stdin if it's a TTY
+    if ((stream as any)['isTTY']) {
+        yield new Uint8Array(0);
+        return null;
+    }
+
+    try {
+        // initialize the stream event handlers
+        events[0] = onEvent(stream, 'end');
+        events[1] = onEvent(stream, 'error');
+
+        do {
+            events[2] = onEvent(stream, 'readable');
+
+            // wait on the first message event from the stream
+            [event, err] = await Promise.race(events.map((x) => x[2]));
+
+            // if the stream emitted an Error, rethrow it
+            if (event === 'error') { break; }
+            if (!(done = event === 'end')) {
+                // If the size is NaN, request to read everything in the stream's internal buffer
+                if (!Number.isFinite(size - bufferLength)) {
+                    buffer = toUint8Array(stream['read']());
+                } else {
+                    buffer = toUint8Array(stream['read'](size - bufferLength));
+                    // If the byteLength is 0, then the requested amount is more than the stream has
+                    // in its internal buffer. In this case the stream needs a "kick" to tell it to
+                    // continue emitting readable events, so request to read everything the stream
+                    // has in its internal buffer right now.
+                    if ((buffer as Uint8Array).byteLength < (size - bufferLength)) {
+                        buffer = toUint8Array(stream['read']());
+                    }
+                }
+                // if chunk is not null or empty, push it onto the queue
+                if ((buffer as Uint8Array).byteLength > 0) {
+                    buffers.push(buffer as Uint8Array);
+                    bufferLength += (buffer as Uint8Array).byteLength;
+                }
+            }
+            // If we have enough bytes in our buffer, yield chunks until we don't
+            if (done || size <= bufferLength) {
+                do {
+                    ({ cmd, size } = yield byteRange());
+                } while (size < bufferLength);
+            }
+        } while (!done);
+    } finally {
+        await cleanup(events, event === 'error' ? err : null);
+    }
+
+    return null;
+
+    function cleanup<T extends Error | null | void>(events: Event[], err?: T) {
+        buffer = buffers = <any>null;
+        return new Promise<void>((resolve, reject) => {
+            for (const [evt, fn] of events) {
+                stream['off'](evt, fn);
+            }
+            try {
+                // Some stream implementations don't call the destroy callback,
+                // because it's really a node-internal API. Just calling `destroy`
+                // here should be enough to conform to the ReadableStream contract
+                const destroy = (stream as any)['destroy'];
+                destroy && destroy.call(stream, err);
+                err = undefined;
+            } catch (e) { err = e as T || err; } finally {
+                err != null ? reject(err) : resolve();
+            }
+        });
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/io/file.ts b/igv_component/node_modules/apache-arrow/src/io/file.ts
new file mode 100644
index 0000000000000000000000000000000000000000..01d1479cfaa916834afcb16c84fe1de4c3e36c3d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/io/file.ts
@@ -0,0 +1,115 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { FileHandle } from './interfaces.js';
+import { ByteStream, AsyncByteStream } from './stream.js';
+import { ArrayBufferViewInput, toUint8Array } from '../util/buffer.js';
+
+/** @ignore */
+export class RandomAccessFile extends ByteStream {
+    public size: number;
+    public position = 0;
+    protected buffer: Uint8Array | null;
+    constructor(buffer: ArrayBufferViewInput, byteLength?: number) {
+        super();
+        this.buffer = toUint8Array(buffer);
+        this.size = typeof byteLength === 'undefined' ? this.buffer!.byteLength : byteLength;
+    }
+    public readInt32(position: number) {
+        const { buffer, byteOffset } = this.readAt(position, 4);
+        return new DataView(buffer, byteOffset).getInt32(0, true);
+    }
+    public seek(position: number) {
+        this.position = Math.min(position, this.size);
+        return position < this.size;
+    }
+    public read(nBytes?: number | null) {
+        const { buffer, size, position } = this;
+        if (buffer && position < size) {
+            if (typeof nBytes !== 'number') { nBytes = Number.POSITIVE_INFINITY; }
+            this.position = Math.min(size,
+                position + Math.min(size - position, nBytes));
+            return buffer.subarray(position, this.position);
+        }
+        return null;
+    }
+    public readAt(position: number, nBytes: number) {
+        const buf = this.buffer;
+        const end = Math.min(this.size, position + nBytes);
+        return buf ? buf.subarray(position, end) : new Uint8Array(nBytes);
+    }
+    public close() { this.buffer && (this.buffer = null); }
+    public throw(value?: any) { this.close(); return { done: true, value }; }
+    public return(value?: any) { this.close(); return { done: true, value }; }
+}
+
+/** @ignore */
+export class AsyncRandomAccessFile extends AsyncByteStream {
+    declare public size: number;
+    public position = 0;
+    public _pending?: Promise<void>;
+    protected _handle: FileHandle | null;
+    constructor(file: FileHandle, byteLength?: number) {
+        super();
+        this._handle = file;
+        if (typeof byteLength === 'number') {
+            this.size = byteLength;
+        } else {
+            this._pending = (async () => {
+                this.size = (await file.stat()).size;
+                delete this._pending;
+            })();
+        }
+    }
+    public async readInt32(position: number) {
+        const { buffer, byteOffset } = await this.readAt(position, 4);
+        return new DataView(buffer, byteOffset).getInt32(0, true);
+    }
+    public async seek(position: number) {
+        this._pending && await this._pending;
+        this.position = Math.min(position, this.size);
+        return position < this.size;
+    }
+    public async read(nBytes?: number | null) {
+        this._pending && await this._pending;
+        const { _handle: file, size, position } = this;
+        if (file && position < size) {
+            if (typeof nBytes !== 'number') { nBytes = Number.POSITIVE_INFINITY; }
+            let pos = position, offset = 0, bytesRead = 0;
+            const end = Math.min(size, pos + Math.min(size - pos, nBytes));
+            const buffer = new Uint8Array(Math.max(0, (this.position = end) - pos));
+            while ((pos += bytesRead) < end && (offset += bytesRead) < buffer.byteLength) {
+                ({ bytesRead } = await file.read(buffer, offset, buffer.byteLength - offset, pos));
+            }
+            return buffer;
+        }
+        return null;
+    }
+    public async readAt(position: number, nBytes: number) {
+        this._pending && await this._pending;
+        const { _handle: file, size } = this;
+        if (file && (position + nBytes) < size) {
+            const end = Math.min(size, position + nBytes);
+            const buffer = new Uint8Array(end - position);
+            return (await file.read(buffer, 0, nBytes, position)).buffer;
+        }
+        return new Uint8Array(nBytes);
+    }
+    public async close() { const f = this._handle; this._handle = null; f && await f.close(); }
+    public async throw(value?: any) { await this.close(); return { done: true, value }; }
+    public async return(value?: any) { await this.close(); return { done: true, value }; }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/io/interfaces.ts b/igv_component/node_modules/apache-arrow/src/io/interfaces.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d69841bcbbb91161d3c46227d43efa057634b80c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/io/interfaces.ts
@@ -0,0 +1,179 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import streamAdapters from './adapters.js';
+
+/** @ignore */
+export const ITERATOR_DONE: any = Object.freeze({ done: true, value: void (0) });
+
+/** @ignore */
+export type FileHandle = import('fs').promises.FileHandle;
+/** @ignore */
+export type ArrowJSONLike = { schema: any; batches?: any[]; dictionaries?: any[] };
+/** @ignore */
+export type ReadableDOMStreamOptions = { type: 'bytes' | undefined; autoAllocateChunkSize?: number; highWaterMark?: number };
+
+/** @ignore */
+export class ArrowJSON {
+    constructor(private _json: ArrowJSONLike) { }
+    public get schema(): any { return this._json['schema']; }
+    public get batches(): any[] { return (this._json['batches'] || []) as any[]; }
+    public get dictionaries(): any[] { return (this._json['dictionaries'] || []) as any[]; }
+}
+
+/** @ignore */
+export interface Readable<T> {
+
+    readonly closed: Promise<void>;
+    cancel(reason?: any): Promise<void>;
+
+    read(size?: number | null): Promise<T | null>;
+    peek(size?: number | null): Promise<T | null>;
+    throw(value?: any): Promise<IteratorResult<any>>;
+    return(value?: any): Promise<IteratorResult<any>>;
+    next(size?: number | null): Promise<IteratorResult<T>>;
+}
+
+/** @ignore */
+export interface Writable<T> {
+    readonly closed: Promise<void>;
+    close(): void;
+    write(chunk: T): void;
+    abort(reason?: any): void;
+}
+
+/** @ignore */
+export interface ReadableWritable<TReadable, TWritable> extends Readable<TReadable>, Writable<TWritable> {
+    [Symbol.asyncIterator](): AsyncIterableIterator<TReadable>;
+    toDOMStream(options?: ReadableDOMStreamOptions): ReadableStream<TReadable>;
+    toNodeStream(options?: import('stream').ReadableOptions): import('stream').Readable;
+}
+
+/** @ignore */
+export abstract class ReadableInterop<T> {
+
+    public abstract toDOMStream(options?: ReadableDOMStreamOptions): ReadableStream<T>;
+    public abstract toNodeStream(options?: import('stream').ReadableOptions): import('stream').Readable;
+
+    public tee(): [ReadableStream<T>, ReadableStream<T>] {
+        return this._getDOMStream().tee();
+    }
+    public pipe<R extends NodeJS.WritableStream>(writable: R, options?: { end?: boolean }) {
+        return this._getNodeStream().pipe(writable, options);
+    }
+    public pipeTo(writable: WritableStream<T>, options?: StreamPipeOptions) { return this._getDOMStream().pipeTo(writable, options); }
+    public pipeThrough<R extends ReadableStream<any>>(duplex: { writable: WritableStream<T>; readable: R }, options?: StreamPipeOptions) {
+        return this._getDOMStream().pipeThrough(duplex, options);
+    }
+
+    protected _DOMStream?: ReadableStream<T>;
+    private _getDOMStream() {
+        return this._DOMStream || (this._DOMStream = this.toDOMStream());
+    }
+
+    protected _nodeStream?: import('stream').Readable;
+    private _getNodeStream() {
+        return this._nodeStream || (this._nodeStream = this.toNodeStream());
+    }
+}
+
+/** @ignore */
+type Resolution<T> = { resolve: (value: T | PromiseLike<T>) => void; reject: (reason?: any) => void };
+
+/** @ignore */
+export class AsyncQueue<TReadable = Uint8Array, TWritable = TReadable> extends ReadableInterop<TReadable>
+    implements AsyncIterableIterator<TReadable>, ReadableWritable<TReadable, TWritable> {
+
+    protected _values: TWritable[] = [];
+    protected _error?: { error: any };
+    protected _closedPromise: Promise<void>;
+    protected _closedPromiseResolve?: (value?: any) => void;
+    protected resolvers: Resolution<IteratorResult<TReadable>>[] = [];
+
+    constructor() {
+        super();
+        this._closedPromise = new Promise((r) => this._closedPromiseResolve = r);
+    }
+
+    public get closed(): Promise<void> { return this._closedPromise; }
+    public async cancel(reason?: any) { await this.return(reason); }
+    public write(value: TWritable) {
+        if (this._ensureOpen()) {
+            this.resolvers.length <= 0
+                ? (this._values.push(value))
+                : (this.resolvers.shift()!.resolve({ done: false, value } as any));
+        }
+    }
+    public abort(value?: any) {
+        if (this._closedPromiseResolve) {
+            this.resolvers.length <= 0
+                ? (this._error = { error: value })
+                : (this.resolvers.shift()!.reject({ done: true, value }));
+        }
+    }
+    public close() {
+        if (this._closedPromiseResolve) {
+            const { resolvers } = this;
+            while (resolvers.length > 0) {
+                resolvers.shift()!.resolve(ITERATOR_DONE);
+            }
+            this._closedPromiseResolve();
+            this._closedPromiseResolve = undefined;
+        }
+    }
+
+    public [Symbol.asyncIterator]() { return this; }
+    public toDOMStream(options?: ReadableDOMStreamOptions) {
+        return streamAdapters.toDOMStream(
+            (this._closedPromiseResolve || this._error)
+                ? (this as AsyncIterable<TReadable>)
+                : (this._values as any) as Iterable<TReadable>,
+            options);
+    }
+    public toNodeStream(options?: import('stream').ReadableOptions) {
+        return streamAdapters.toNodeStream(
+            (this._closedPromiseResolve || this._error)
+                ? (this as AsyncIterable<TReadable>)
+                : (this._values as any) as Iterable<TReadable>,
+            options);
+    }
+    public async throw(_?: any) { await this.abort(_); return ITERATOR_DONE; }
+    public async return(_?: any) { await this.close(); return ITERATOR_DONE; }
+
+    public async read(size?: number | null): Promise<TReadable | null> { return (await this.next(size, 'read')).value; }
+    public async peek(size?: number | null): Promise<TReadable | null> { return (await this.next(size, 'peek')).value; }
+    public next(..._args: any[]): Promise<IteratorResult<TReadable>> {
+        if (this._values.length > 0) {
+            return Promise.resolve({ done: false, value: this._values.shift()! } as any);
+        } else if (this._error) {
+            return Promise.reject({ done: true, value: this._error.error });
+        } else if (!this._closedPromiseResolve) {
+            return Promise.resolve(ITERATOR_DONE);
+        } else {
+            return new Promise<IteratorResult<TReadable>>((resolve, reject) => {
+                this.resolvers.push({ resolve, reject });
+            });
+        }
+    }
+
+    protected _ensureOpen() {
+        if (this._closedPromiseResolve) {
+            return true;
+        }
+        throw new Error(`AsyncQueue is closed`);
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/io/node/builder.ts b/igv_component/node_modules/apache-arrow/src/io/node/builder.ts
new file mode 100644
index 0000000000000000000000000000000000000000..be289f447f5da135b1f4be0717b33660e5ee7319
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/io/node/builder.ts
@@ -0,0 +1,99 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Duplex } from 'stream';
+import { DataType } from '../../type.js';
+import { Builder, BuilderOptions } from '../../builder.js';
+import { makeBuilder } from '../../factories.js';
+
+/** @ignore */
+export interface BuilderDuplexOptions<T extends DataType = any, TNull = any> extends BuilderOptions<T, TNull> {
+    autoDestroy?: boolean;
+    highWaterMark?: number;
+    queueingStrategy?: 'bytes' | 'count';
+    dictionaryHashFunction?: (value: any) => string | number;
+    valueToChildTypeId?: (builder: Builder<T, TNull>, value: any, offset: number) => number;
+}
+
+/** @ignore */
+export function builderThroughNodeStream<T extends DataType = any, TNull = any>(options: BuilderDuplexOptions<T, TNull>) {
+    return new BuilderDuplex(makeBuilder(options), options);
+}
+
+/** @ignore */
+type CB = (error?: Error | null | undefined) => void;
+
+/** @ignore */
+class BuilderDuplex<T extends DataType = any, TNull = any> extends Duplex {
+
+    private _finished: boolean;
+    private _numChunks: number;
+    private _desiredSize: number;
+    private _builder: Builder<T, TNull>;
+    private _getSize: (builder: Builder<T, TNull>) => number;
+
+    constructor(builder: Builder<T, TNull>, options: BuilderDuplexOptions<T, TNull>) {
+
+        const { queueingStrategy = 'count', autoDestroy = true } = options;
+        const { highWaterMark = queueingStrategy !== 'bytes' ? 1000 : 2 ** 14 } = options;
+
+        super({ autoDestroy, highWaterMark: 1, allowHalfOpen: true, writableObjectMode: true, readableObjectMode: true });
+
+        this._numChunks = 0;
+        this._finished = false;
+        this._builder = builder;
+        this._desiredSize = highWaterMark;
+        this._getSize = queueingStrategy !== 'bytes' ? builderLength : builderByteLength;
+    }
+    _read(size: number) {
+        this._maybeFlush(this._builder, this._desiredSize = size);
+    }
+    _final(cb?: CB) {
+        this._maybeFlush(this._builder.finish(), this._desiredSize);
+        cb && cb();
+    }
+    _write(value: any, _: string, cb?: CB) {
+        const result = this._maybeFlush(
+            this._builder.append(value),
+            this._desiredSize
+        );
+        cb && cb();
+        return result;
+    }
+    _destroy(err: Error | null, cb?: (error: Error | null) => void) {
+        this._builder.clear();
+        cb && cb(err);
+    }
+    private _maybeFlush(builder: Builder<T, TNull>, size: number) {
+        if (this._getSize(builder) >= size) {
+            ++this._numChunks && this.push(builder.toVector());
+        }
+        if (builder.finished) {
+            if (builder.length > 0 || this._numChunks === 0) {
+                ++this._numChunks && this.push(builder.toVector());
+            }
+            if (!this._finished && (this._finished = true)) {
+                this.push(null);
+            }
+            return false;
+        }
+        return this._getSize(builder) < this.writableHighWaterMark;
+    }
+}
+
+/** @ignore */ const builderLength = <T extends DataType = any>(builder: Builder<T>) => builder.length;
+/** @ignore */ const builderByteLength = <T extends DataType = any>(builder: Builder<T>) => builder.byteLength;
diff --git a/igv_component/node_modules/apache-arrow/src/io/node/iterable.ts b/igv_component/node_modules/apache-arrow/src/io/node/iterable.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6698e7fa929155e8349073f7109c676e6c7e5a17
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/io/node/iterable.ts
@@ -0,0 +1,113 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Readable } from 'stream';
+import { isIterable, isAsyncIterable } from '../../util/compat.js';
+
+/** @ignore */
+type ReadableOptions = import('stream').ReadableOptions;
+/** @ignore */
+type SourceIterator<T> = Generator<T, void, number | null>;
+/** @ignore */
+type AsyncSourceIterator<T> = AsyncGenerator<T, void, number | null>;
+
+/** @ignore */
+export function toNodeStream<T>(source: Iterable<T> | AsyncIterable<T>, options?: ReadableOptions): Readable {
+    if (isAsyncIterable<T>(source)) { return new AsyncIterableReadable(source[Symbol.asyncIterator]() as AsyncSourceIterator<T>, options); }
+    if (isIterable<T>(source)) { return new IterableReadable(source[Symbol.iterator]() as SourceIterator<T>, options); }
+    /* istanbul ignore next */
+    throw new Error(`toNodeStream() must be called with an Iterable or AsyncIterable`);
+}
+
+/** @ignore */
+class IterableReadable<T extends Uint8Array | any> extends Readable {
+    private _pulling: boolean;
+    private _bytesMode: boolean;
+    private _iterator: SourceIterator<T>;
+    constructor(it: SourceIterator<T>, options?: ReadableOptions) {
+        super(options);
+        this._iterator = it;
+        this._pulling = false;
+        this._bytesMode = !options || !options.objectMode;
+    }
+    _read(size: number) {
+        const it = this._iterator;
+        if (it && !this._pulling && (this._pulling = true)) {
+            this._pulling = this._pull(size, it);
+        }
+    }
+    _destroy(e: Error | null, cb: (e: Error | null) => void) {
+        const it = this._iterator;
+        let fn: any;
+        it && (fn = e != null && it.throw || it.return);
+        fn?.call(it, e);
+        cb && cb(null);
+    }
+    private _pull(size: number, it: SourceIterator<T>) {
+        const bm = this._bytesMode;
+        let r: IteratorResult<T> | null = null;
+        while (this.readable && !(r = it.next(bm ? size : null)).done) {
+            if (size != null) {
+                size -= (bm && ArrayBuffer.isView(r.value) ? r.value.byteLength : 1);
+            }
+            if (!this.push(r.value) || size <= 0) { break; }
+        }
+        if ((r?.done || !this.readable) && (this.push(null) || true)) {
+            it.return && it.return();
+        }
+        return !this.readable;
+    }
+}
+
+/** @ignore */
+class AsyncIterableReadable<T extends Uint8Array | any> extends Readable {
+    private _pulling: boolean;
+    private _bytesMode: boolean;
+    private _iterator: AsyncSourceIterator<T>;
+    constructor(it: AsyncSourceIterator<T>, options?: ReadableOptions) {
+        super(options);
+        this._iterator = it;
+        this._pulling = false;
+        this._bytesMode = !options || !options.objectMode;
+    }
+    _read(size: number) {
+        const it = this._iterator;
+        if (it && !this._pulling && (this._pulling = true)) {
+            (async () => this._pulling = await this._pull(size, it))();
+        }
+    }
+    _destroy(e: Error | null, cb: (e: Error | null) => void) {
+        const it = this._iterator;
+        let fn: any;
+        it && (fn = e != null && it.throw || it.return);
+        fn?.call(it, e).then(() => cb && cb(null)) || (cb && cb(null));
+    }
+    private async _pull(size: number, it: AsyncSourceIterator<T>) {
+        const bm = this._bytesMode;
+        let r: IteratorResult<T> | null = null;
+        while (this.readable && !(r = await it.next(bm ? size : null)).done) {
+            if (size != null) {
+                size -= (bm && ArrayBuffer.isView(r.value) ? r.value.byteLength : 1);
+            }
+            if (!this.push(r.value) || size <= 0) { break; }
+        }
+        if ((r?.done || !this.readable) && (this.push(null) || true)) {
+            it.return && it.return();
+        }
+        return !this.readable;
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/io/node/reader.ts b/igv_component/node_modules/apache-arrow/src/io/node/reader.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e8bbf736aa6514d280789e68bb5593eae4a3d1a2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/io/node/reader.ts
@@ -0,0 +1,86 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Duplex, DuplexOptions } from 'stream';
+import { AsyncByteQueue } from '../../io/stream.js';
+import { RecordBatchReader } from '../../ipc/reader.js';
+import { RecordBatch } from '../../recordbatch.js';
+import { TypeMap } from '../../type.js';
+
+/** @ignore */
+export function recordBatchReaderThroughNodeStream<T extends TypeMap = any>(options?: DuplexOptions & { autoDestroy: boolean }) {
+    return new RecordBatchReaderDuplex<T>(options);
+}
+
+/** @ignore */
+type CB = (error?: Error | null | undefined) => void;
+
+/** @ignore */
+class RecordBatchReaderDuplex<T extends TypeMap = any> extends Duplex {
+    private _pulling = false;
+    private _autoDestroy = true;
+    private _reader: RecordBatchReader | null;
+    private _asyncQueue: AsyncByteQueue | null;
+    constructor(options?: DuplexOptions & { autoDestroy: boolean }) {
+        super({ allowHalfOpen: false, ...options, readableObjectMode: true, writableObjectMode: false });
+        this._reader = null;
+        this._pulling = false;
+        this._asyncQueue = new AsyncByteQueue();
+        this._autoDestroy = options && (typeof options.autoDestroy === 'boolean') ? options.autoDestroy : true;
+    }
+    _final(cb?: CB) {
+        const aq = this._asyncQueue;
+        aq?.close();
+        cb && cb();
+    }
+    _write(x: any, _: string, cb: CB) {
+        const aq = this._asyncQueue;
+        aq?.write(x);
+        cb && cb();
+        return true;
+    }
+    _read(size: number) {
+        const aq = this._asyncQueue;
+        if (aq && !this._pulling && (this._pulling = true)) {
+            (async () => {
+                if (!this._reader) {
+                    this._reader = await this._open(aq);
+                }
+                this._pulling = await this._pull(size, this._reader);
+            })();
+        }
+    }
+    _destroy(err: Error | null, cb: (error: Error | null) => void) {
+        const aq = this._asyncQueue;
+        if (aq) { err ? aq.abort(err) : aq.close(); }
+        cb(this._asyncQueue = this._reader = null);
+    }
+    async _open(source: AsyncByteQueue) {
+        return await (await RecordBatchReader.from<T>(source)).open({ autoDestroy: this._autoDestroy });
+    }
+    async _pull(size: number, reader: RecordBatchReader<T>) {
+        let r: IteratorResult<RecordBatch<T>> | null = null;
+        while (this.readable && !(r = await reader.next()).done) {
+            if (!this.push(r.value) || (size != null && --size <= 0)) { break; }
+        }
+        if (!this.readable || (r?.done && (reader.autoDestroy || (await reader.reset().open()).closed))) {
+            this.push(null);
+            await reader.cancel();
+        }
+        return !this.readable;
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/io/node/writer.ts b/igv_component/node_modules/apache-arrow/src/io/node/writer.ts
new file mode 100644
index 0000000000000000000000000000000000000000..5725ef7a5d726bc6b8e8e60f8b0a19c032d7fdba
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/io/node/writer.ts
@@ -0,0 +1,77 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Duplex, DuplexOptions } from 'stream';
+import { AsyncByteStream } from '../../io/stream.js';
+import { RecordBatchWriter } from '../../ipc/writer.js';
+import { TypeMap } from '../../type.js';
+
+/** @ignore */
+export function recordBatchWriterThroughNodeStream<T extends TypeMap = any>(this: typeof RecordBatchWriter, options?: DuplexOptions & { autoDestroy: boolean }) {
+    return new RecordBatchWriterDuplex(new this<T>(options));
+}
+
+/** @ignore */
+type CB = (error?: Error | null | undefined) => void;
+
+/** @ignore */
+class RecordBatchWriterDuplex<T extends TypeMap = any> extends Duplex {
+    private _pulling = false;
+    private _reader: AsyncByteStream | null;
+    private _writer: RecordBatchWriter | null;
+    constructor(writer: RecordBatchWriter<T>, options?: DuplexOptions) {
+        super({ allowHalfOpen: false, ...options, writableObjectMode: true, readableObjectMode: false });
+        this._writer = writer;
+        this._reader = new AsyncByteStream(writer);
+    }
+    _final(cb?: CB) {
+        const writer = this._writer;
+        writer?.close();
+        cb && cb();
+    }
+    _write(x: any, _: string, cb: CB) {
+        const writer = this._writer;
+        writer?.write(x);
+        cb && cb();
+        return true;
+    }
+    _read(size: number) {
+        const it = this._reader;
+        if (it && !this._pulling && (this._pulling = true)) {
+            (async () => this._pulling = await this._pull(size, it))();
+        }
+    }
+    _destroy(err: Error | null, cb: (error: Error | null) => void) {
+        const writer = this._writer;
+        if (writer) { err ? writer.abort(err) : writer.close(); }
+        cb(this._reader = this._writer = null);
+    }
+    async _pull(size: number, reader: AsyncByteStream) {
+        let r: IteratorResult<Uint8Array> | null = null;
+        while (this.readable && !(r = await reader.next(size || null)).done) {
+            if (size != null && r.value) {
+                size -= r.value.byteLength;
+            }
+            if (!this.push(r.value) || size <= 0) { break; }
+        }
+        if ((r?.done || !this.readable)) {
+            this.push(null);
+            await reader.cancel();
+        }
+        return !this.readable;
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/io/stream.ts b/igv_component/node_modules/apache-arrow/src/io/stream.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b011d5a6dc127346cb3ba5b874447afa1f3e26bf
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/io/stream.ts
@@ -0,0 +1,152 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import streamAdapters from './adapters.js';
+import { decodeUtf8 } from '../util/utf8.js';
+import { ITERATOR_DONE, Readable, Writable, AsyncQueue } from './interfaces.js';
+import { toUint8Array, joinUint8Arrays, ArrayBufferViewInput } from '../util/buffer.js';
+
+import {
+    isPromise, isFetchResponse,
+    isIterable, isAsyncIterable,
+    isReadableDOMStream, isReadableNodeStream
+} from '../util/compat.js';
+
+/** @ignore */
+export type WritableSink<T> = Writable<T> | WritableStream<T> | NodeJS.WritableStream | null;
+/** @ignore */
+export type ReadableSource<T> = Readable<T> | PromiseLike<T> | AsyncIterable<T> | ReadableStream<T> | NodeJS.ReadableStream | null;
+
+/** @ignore */
+export class AsyncByteQueue<T extends ArrayBufferViewInput = Uint8Array> extends AsyncQueue<Uint8Array, T> {
+    public write(value: ArrayBufferViewInput | Uint8Array) {
+        if ((value = toUint8Array(value)).byteLength > 0) {
+            return super.write(value as T);
+        }
+    }
+    public toString(sync: true): string;
+    public toString(sync?: false): Promise<string>;
+    public toString(sync = false) {
+        return sync
+            ? decodeUtf8(this.toUint8Array(true))
+            : this.toUint8Array(false).then(decodeUtf8);
+    }
+    public toUint8Array(sync: true): Uint8Array;
+    public toUint8Array(sync?: false): Promise<Uint8Array>;
+    public toUint8Array(sync = false) {
+        return sync ? joinUint8Arrays(this._values as any[])[0] : (async () => {
+            const buffers = [];
+            let byteLength = 0;
+            for await (const chunk of this) {
+                buffers.push(chunk);
+                byteLength += chunk.byteLength;
+            }
+            return joinUint8Arrays(buffers, byteLength)[0];
+        })();
+    }
+}
+
+/** @ignore */
+export class ByteStream implements IterableIterator<Uint8Array> {
+    declare private source: ByteStreamSource<Uint8Array>;
+    constructor(source?: Iterable<ArrayBufferViewInput> | ArrayBufferViewInput) {
+        if (source) {
+            this.source = new ByteStreamSource(streamAdapters.fromIterable(source));
+        }
+    }
+    [Symbol.iterator]() { return this; }
+    public next(value?: any) { return this.source.next(value); }
+    public throw(value?: any) { return this.source.throw(value); }
+    public return(value?: any) { return this.source.return(value); }
+    public peek(size?: number | null) { return this.source.peek(size); }
+    public read(size?: number | null) { return this.source.read(size); }
+}
+
+/** @ignore */
+export class AsyncByteStream implements Readable<Uint8Array>, AsyncIterableIterator<Uint8Array> {
+    declare private source: AsyncByteStreamSource<Uint8Array>;
+    constructor(source?: PromiseLike<ArrayBufferViewInput> | Response | ReadableStream<ArrayBufferViewInput> | NodeJS.ReadableStream | AsyncIterable<ArrayBufferViewInput> | Iterable<ArrayBufferViewInput>) {
+        if (source instanceof AsyncByteStream) {
+            this.source = (source as AsyncByteStream).source;
+        } else if (source instanceof AsyncByteQueue) {
+            this.source = new AsyncByteStreamSource(streamAdapters.fromAsyncIterable(source));
+        } else if (isReadableNodeStream(source)) {
+            this.source = new AsyncByteStreamSource(streamAdapters.fromNodeStream(source));
+        } else if (isReadableDOMStream<ArrayBufferViewInput>(source)) {
+            this.source = new AsyncByteStreamSource(streamAdapters.fromDOMStream(source));
+        } else if (isFetchResponse(source)) {
+            this.source = new AsyncByteStreamSource(streamAdapters.fromDOMStream(source.body!));
+        } else if (isIterable<ArrayBufferViewInput>(source)) {
+            this.source = new AsyncByteStreamSource(streamAdapters.fromIterable(source));
+        } else if (isPromise<ArrayBufferViewInput>(source)) {
+            this.source = new AsyncByteStreamSource(streamAdapters.fromAsyncIterable(source));
+        } else if (isAsyncIterable<ArrayBufferViewInput>(source)) {
+            this.source = new AsyncByteStreamSource(streamAdapters.fromAsyncIterable(source));
+        }
+    }
+    [Symbol.asyncIterator]() { return this; }
+    public next(value?: any) { return this.source.next(value); }
+    public throw(value?: any) { return this.source.throw(value); }
+    public return(value?: any) { return this.source.return(value); }
+    public get closed(): Promise<void> { return this.source.closed; }
+    public cancel(reason?: any) { return this.source.cancel(reason); }
+    public peek(size?: number | null) { return this.source.peek(size); }
+    public read(size?: number | null) { return this.source.read(size); }
+}
+
+/** @ignore */
+type ByteStreamSourceIterator<T> = Generator<T, null, { cmd: 'peek' | 'read'; size?: number | null }>;
+/** @ignore */
+type AsyncByteStreamSourceIterator<T> = AsyncGenerator<T, null, { cmd: 'peek' | 'read'; size?: number | null }>;
+
+/** @ignore */
+class ByteStreamSource<T> {
+    constructor(protected source: ByteStreamSourceIterator<T>) { }
+    public cancel(reason?: any) { this.return(reason); }
+    public peek(size?: number | null): T | null { return this.next(size, 'peek').value; }
+    public read(size?: number | null): T | null { return this.next(size, 'read').value; }
+    public next(size?: number | null, cmd: 'peek' | 'read' = 'read') { return this.source.next({ cmd, size }); }
+    public throw(value?: any) { return Object.create((this.source.throw && this.source.throw(value)) || ITERATOR_DONE); }
+    public return(value?: any) { return Object.create((this.source.return && this.source.return(value)) || ITERATOR_DONE); }
+}
+
+/** @ignore */
+class AsyncByteStreamSource<T> implements Readable<T> {
+
+    private _closedPromise: Promise<void>;
+    private _closedPromiseResolve?: (value?: any) => void;
+    constructor(protected source: ByteStreamSourceIterator<T> | AsyncByteStreamSourceIterator<T>) {
+        this._closedPromise = new Promise((r) => this._closedPromiseResolve = r);
+    }
+    public async cancel(reason?: any) { await this.return(reason); }
+    public get closed(): Promise<void> { return this._closedPromise; }
+    public async read(size?: number | null): Promise<T | null> { return (await this.next(size, 'read')).value; }
+    public async peek(size?: number | null): Promise<T | null> { return (await this.next(size, 'peek')).value; }
+    public async next(size?: number | null, cmd: 'peek' | 'read' = 'read') { return (await this.source.next({ cmd, size })); }
+    public async throw(value?: any) {
+        const result = (this.source.throw && await this.source.throw(value)) || ITERATOR_DONE;
+        this._closedPromiseResolve && this._closedPromiseResolve();
+        this._closedPromiseResolve = undefined;
+        return Object.create(result);
+    }
+    public async return(value?: any) {
+        const result = (this.source.return && await this.source.return(value)) || ITERATOR_DONE;
+        this._closedPromiseResolve && this._closedPromiseResolve();
+        this._closedPromiseResolve = undefined;
+        return Object.create(result);
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/io/whatwg/builder.ts b/igv_component/node_modules/apache-arrow/src/io/whatwg/builder.ts
new file mode 100644
index 0000000000000000000000000000000000000000..7b0ba8035987d049b41c68ba6eaba5dc90a3d149
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/io/whatwg/builder.ts
@@ -0,0 +1,116 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { DataType } from '../../type.js';
+import { Vector } from '../../vector.js';
+import { Builder, BuilderOptions } from '../../builder.js';
+import { makeBuilder } from '../../factories.js';
+
+/** @ignore */
+export interface BuilderTransformOptions<T extends DataType = any, TNull = any> extends BuilderOptions<T, TNull> {
+    queueingStrategy?: 'bytes' | 'count';
+    dictionaryHashFunction?: (value: any) => string | number;
+    readableStrategy?: { highWaterMark?: number; size?: any; type?: 'bytes' };
+    writableStrategy?: { highWaterMark?: number; size?: any; type?: 'bytes' };
+    valueToChildTypeId?: (builder: Builder<T, TNull>, value: any, offset: number) => number;
+}
+
+/** @ignore */
+export function builderThroughDOMStream<T extends DataType = any, TNull = any>(options: BuilderTransformOptions<T, TNull>) {
+    return new BuilderTransform(options);
+}
+
+/** @ignore */
+export class BuilderTransform<T extends DataType = any, TNull = any> {
+
+    public readable: ReadableStream<Vector<T>>;
+    public writable: WritableStream<T['TValue'] | TNull>;
+    public _controller: ReadableStreamDefaultController<Vector<T>> | null;
+
+    private _numChunks = 0;
+    private _finished = false;
+    private _bufferedSize = 0;
+    private _builder: Builder<T, TNull>;
+    private _getSize: (builder: Builder<T, TNull>) => number;
+
+    constructor(options: BuilderTransformOptions<T, TNull>) {
+
+        // Access properties by string indexers to defeat closure compiler
+
+        const {
+            ['readableStrategy']: readableStrategy,
+            ['writableStrategy']: writableStrategy,
+            ['queueingStrategy']: queueingStrategy = 'count',
+            ...builderOptions
+        } = options;
+
+        this._controller = null;
+        this._builder = makeBuilder<T, TNull>(builderOptions);
+        this._getSize = queueingStrategy !== 'bytes' ? chunkLength : chunkByteLength;
+
+        const { ['highWaterMark']: readableHighWaterMark = queueingStrategy === 'bytes' ? 2 ** 14 : 1000 } = { ...readableStrategy };
+        const { ['highWaterMark']: writableHighWaterMark = queueingStrategy === 'bytes' ? 2 ** 14 : 1000 } = { ...writableStrategy };
+
+        this['readable'] = new ReadableStream<Vector<T>>({
+            ['cancel']: () => { this._builder.clear(); },
+            ['pull']: (c) => { this._maybeFlush(this._builder, this._controller = c); },
+            ['start']: (c) => { this._maybeFlush(this._builder, this._controller = c); },
+        }, {
+            'highWaterMark': readableHighWaterMark,
+            'size': queueingStrategy !== 'bytes' ? chunkLength : chunkByteLength,
+        });
+
+        this['writable'] = new WritableStream({
+            ['abort']: () => { this._builder.clear(); },
+            ['write']: () => { this._maybeFlush(this._builder, this._controller); },
+            ['close']: () => { this._maybeFlush(this._builder.finish(), this._controller); },
+        }, {
+            'highWaterMark': writableHighWaterMark,
+            'size': (value: T['TValue'] | TNull) => this._writeValueAndReturnChunkSize(value),
+        });
+    }
+
+    private _writeValueAndReturnChunkSize(value: T['TValue'] | TNull) {
+        const bufferedSize = this._bufferedSize;
+        this._bufferedSize = this._getSize(this._builder.append(value));
+        return this._bufferedSize - bufferedSize;
+    }
+
+    private _maybeFlush(builder: Builder<T, TNull>, controller: ReadableStreamDefaultController<Vector<T>> | null) {
+        if (controller == null) { return; }
+        if (this._bufferedSize >= controller.desiredSize!) {
+            ++this._numChunks && this._enqueue(controller, builder.toVector());
+        }
+        if (builder.finished) {
+            if (builder.length > 0 || this._numChunks === 0) {
+                ++this._numChunks && this._enqueue(controller, builder.toVector());
+            }
+            if (!this._finished && (this._finished = true)) {
+                this._enqueue(controller, null);
+            }
+        }
+    }
+
+    private _enqueue(controller: ReadableStreamDefaultController<Vector<T>>, chunk: Vector<T> | null) {
+        this._bufferedSize = 0;
+        this._controller = null;
+        chunk == null ? controller.close() : controller.enqueue(chunk);
+    }
+}
+
+/** @ignore */ const chunkLength = <T extends DataType = any>(chunk?: Vector<T> | Builder<T>) => chunk?.length ?? 0;
+/** @ignore */ const chunkByteLength = <T extends DataType = any>(chunk?: Vector<T> | Builder<T>) => chunk?.byteLength ?? 0;
diff --git a/igv_component/node_modules/apache-arrow/src/io/whatwg/iterable.ts b/igv_component/node_modules/apache-arrow/src/io/whatwg/iterable.ts
new file mode 100644
index 0000000000000000000000000000000000000000..508a10b89bb0166a3c6d43100ab6ee06ba79fa29
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/io/whatwg/iterable.ts
@@ -0,0 +1,93 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { toUint8Array } from '../../util/buffer.js';
+import { ReadableDOMStreamOptions } from '../../io/interfaces.js';
+import { isIterable, isAsyncIterable } from '../../util/compat.js';
+
+/** @ignore */
+type SourceIterator<T> = Generator<T, void, number | null>;
+/** @ignore */
+type AsyncSourceIterator<T> = AsyncGenerator<T, void, number | null>;
+
+/** @ignore */
+export function toDOMStream<T>(source: Iterable<T> | AsyncIterable<T>, options?: ReadableDOMStreamOptions): ReadableStream<T> {
+    if (isAsyncIterable<T>(source)) { return asyncIterableAsReadableDOMStream(source, options); }
+    if (isIterable<T>(source)) { return iterableAsReadableDOMStream(source, options); }
+    /* istanbul ignore next */
+    throw new Error(`toDOMStream() must be called with an Iterable or AsyncIterable`);
+}
+
+/** @ignore */
+function iterableAsReadableDOMStream<T>(source: Iterable<T>, options?: ReadableDOMStreamOptions) {
+
+    let it: SourceIterator<T> | null = null;
+    const bm = (options?.type === 'bytes') || false;
+    const hwm = options?.highWaterMark || (2 ** 24);
+
+    return new ReadableStream<T>({
+        ...options as any,
+        start(controller) { next(controller, it || (it = source[Symbol.iterator]() as SourceIterator<T>)); },
+        pull(controller) { it ? (next(controller, it)) : controller.close(); },
+        cancel() { (it?.return && it.return() || true) && (it = null); }
+    }, { highWaterMark: bm ? hwm : undefined, ...options });
+
+    function next(controller: ReadableStreamDefaultController<T>, it: SourceIterator<T>) {
+        let buf: Uint8Array;
+        let r: IteratorResult<T> | null = null;
+        let size = controller.desiredSize || null;
+        while (!(r = it.next(bm ? size : null)).done) {
+            if (ArrayBuffer.isView(r.value) && (buf = toUint8Array(r.value))) {
+                size != null && bm && (size = size - buf.byteLength + 1);
+                r.value = <any>buf;
+            }
+            controller.enqueue(r.value);
+            if (size != null && --size <= 0) { return; }
+        }
+        controller.close();
+    }
+}
+
+/** @ignore */
+function asyncIterableAsReadableDOMStream<T>(source: AsyncIterable<T>, options?: ReadableDOMStreamOptions) {
+
+    let it: AsyncSourceIterator<T> | null = null;
+    const bm = (options?.type === 'bytes') || false;
+    const hwm = options?.highWaterMark || (2 ** 24);
+
+    return new ReadableStream<T>({
+        ...options as any,
+        async start(controller) { await next(controller, it || (it = source[Symbol.asyncIterator]() as AsyncSourceIterator<T>)); },
+        async pull(controller) { it ? (await next(controller, it)) : controller.close(); },
+        async cancel() { (it?.return && await it.return() || true) && (it = null); },
+    }, { highWaterMark: bm ? hwm : undefined, ...options });
+
+    async function next(controller: ReadableStreamDefaultController<T>, it: AsyncSourceIterator<T>) {
+        let buf: Uint8Array;
+        let r: IteratorResult<T> | null = null;
+        let size = controller.desiredSize || null;
+        while (!(r = await it.next(bm ? size : null)).done) {
+            if (ArrayBuffer.isView(r.value) && (buf = toUint8Array(r.value))) {
+                size != null && bm && (size = size - buf.byteLength + 1);
+                r.value = <any>buf;
+            }
+            controller.enqueue(r.value);
+            if (size != null && --size <= 0) { return; }
+        }
+        controller.close();
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/io/whatwg/reader.ts b/igv_component/node_modules/apache-arrow/src/io/whatwg/reader.ts
new file mode 100644
index 0000000000000000000000000000000000000000..7c4b2ec3974bbda43efd0e2b18e41a7540b379e0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/io/whatwg/reader.ts
@@ -0,0 +1,52 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { TypeMap } from '../../type.js';
+import { RecordBatch } from '../../recordbatch.js';
+import { AsyncByteQueue } from '../../io/stream.js';
+import { RecordBatchReader } from '../../ipc/reader.js';
+
+/** @ignore */
+export function recordBatchReaderThroughDOMStream<T extends TypeMap = any>(writableStrategy?: ByteLengthQueuingStrategy, readableStrategy?: { autoDestroy: boolean }) {
+
+    const queue = new AsyncByteQueue();
+    let reader: RecordBatchReader<T> | null = null;
+
+    const readable = new ReadableStream<RecordBatch<T>>({
+        async cancel() { await queue.close(); },
+        async start(controller) { await next(controller, reader || (reader = await open())); },
+        async pull(controller) { reader ? await next(controller, reader) : controller.close(); }
+    });
+
+    return { writable: new WritableStream(queue, { 'highWaterMark': 2 ** 14, ...writableStrategy }), readable };
+
+    async function open() {
+        return await (await RecordBatchReader.from<T>(queue)).open(readableStrategy);
+    }
+
+    async function next(controller: ReadableStreamDefaultController<RecordBatch<T>>, reader: RecordBatchReader<T>) {
+        let size = controller.desiredSize;
+        let r: IteratorResult<RecordBatch<T>> | null = null;
+        while (!(r = await reader.next()).done) {
+            controller.enqueue(r.value);
+            if (size != null && --size <= 0) {
+                return;
+            }
+        }
+        controller.close();
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/io/whatwg/writer.ts b/igv_component/node_modules/apache-arrow/src/io/whatwg/writer.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d7711201e7636112124d10c59f8cd5f4302c9937
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/io/whatwg/writer.ts
@@ -0,0 +1,50 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { TypeMap } from '../../type.js';
+import { RecordBatch } from '../../recordbatch.js';
+import { AsyncByteStream } from '../../io/stream.js';
+import { RecordBatchWriter } from '../../ipc/writer.js';
+
+/** @ignore */
+export function recordBatchWriterThroughDOMStream<T extends TypeMap = any>(
+    this: typeof RecordBatchWriter,
+    writableStrategy?: QueuingStrategy<RecordBatch<T>> & { autoDestroy: boolean },
+    readableStrategy?: { highWaterMark?: number; size?: any }
+) {
+
+    const writer = new this<T>(writableStrategy);
+    const reader = new AsyncByteStream(writer);
+    const readable = new ReadableStream({
+        // type: 'bytes',
+        async cancel() { await reader.cancel(); },
+        async pull(controller) { await next(controller); },
+        async start(controller) { await next(controller); },
+    }, { 'highWaterMark': 2 ** 14, ...readableStrategy });
+
+    return { writable: new WritableStream(writer, writableStrategy), readable };
+
+    async function next(controller: ReadableStreamDefaultController<Uint8Array>) {
+        let buf: Uint8Array | null = null;
+        let size = controller.desiredSize;
+        while (buf = await reader.read(size || null)) {
+            controller.enqueue(buf);
+            if (size != null && (size -= buf.byteLength) <= 0) { return; }
+        }
+        controller.close();
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/ipc/message.ts b/igv_component/node_modules/apache-arrow/src/ipc/message.ts
new file mode 100644
index 0000000000000000000000000000000000000000..678e6e5f26e127ea9f19306f262afdc4cf5316d0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/ipc/message.ts
@@ -0,0 +1,256 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { MessageHeader } from '../enum.js';
+import { ByteBuffer } from 'flatbuffers';
+import { Message } from './metadata/message.js';
+import { isFileHandle } from '../util/compat.js';
+import { AsyncRandomAccessFile } from '../io/file.js';
+import { toUint8Array, ArrayBufferViewInput } from '../util/buffer.js';
+import { ByteStream, ReadableSource, AsyncByteStream } from '../io/stream.js';
+import { ArrowJSON, ArrowJSONLike, ITERATOR_DONE, FileHandle } from '../io/interfaces.js';
+
+/** @ignore */ const invalidMessageType = (type: MessageHeader) => `Expected ${MessageHeader[type]} Message in stream, but was null or length 0.`;
+/** @ignore */ const nullMessage = (type: MessageHeader) => `Header pointer of flatbuffer-encoded ${MessageHeader[type]} Message is null or length 0.`;
+/** @ignore */ const invalidMessageMetadata = (expected: number, actual: number) => `Expected to read ${expected} metadata bytes, but only read ${actual}.`;
+/** @ignore */ const invalidMessageBodyLength = (expected: number, actual: number) => `Expected to read ${expected} bytes for message body, but only read ${actual}.`;
+
+/** @ignore */
+export class MessageReader implements IterableIterator<Message> {
+    protected source: ByteStream;
+    constructor(source: ByteStream | ArrayBufferViewInput | Iterable<ArrayBufferViewInput>) {
+        this.source = source instanceof ByteStream ? source : new ByteStream(source);
+    }
+    public [Symbol.iterator](): IterableIterator<Message> { return this as IterableIterator<Message>; }
+    public next(): IteratorResult<Message> {
+        let r;
+        if ((r = this.readMetadataLength()).done) { return ITERATOR_DONE; }
+        // ARROW-6313: If the first 4 bytes are continuation indicator (-1), read
+        // the next 4 for the 32-bit metadata length. Otherwise, assume this is a
+        // pre-v0.15 message, where the first 4 bytes are the metadata length.
+        if ((r.value === -1) &&
+            (r = this.readMetadataLength()).done) { return ITERATOR_DONE; }
+        if ((r = this.readMetadata(r.value)).done) { return ITERATOR_DONE; }
+        return (<any>r) as IteratorResult<Message>;
+    }
+    public throw(value?: any) { return this.source.throw(value); }
+    public return(value?: any) { return this.source.return(value); }
+    public readMessage<T extends MessageHeader>(type?: T | null) {
+        let r: IteratorResult<Message<T>>;
+        if ((r = this.next()).done) { return null; }
+        if ((type != null) && r.value.headerType !== type) {
+            throw new Error(invalidMessageType(type));
+        }
+        return r.value;
+    }
+    public readMessageBody(bodyLength: number): Uint8Array {
+        if (bodyLength <= 0) { return new Uint8Array(0); }
+        const buf = toUint8Array(this.source.read(bodyLength));
+        if (buf.byteLength < bodyLength) {
+            throw new Error(invalidMessageBodyLength(bodyLength, buf.byteLength));
+        }
+        // 1. Work around bugs in fs.ReadStream's internal Buffer pooling, see: https://github.com/nodejs/node/issues/24817
+        // 2. Work around https://github.com/whatwg/streams/blob/0ebe4b042e467d9876d80ae045de3843092ad797/reference-implementation/lib/helpers.js#L126
+        return /* 1. */ (buf.byteOffset % 8 === 0) &&
+               /* 2. */ (buf.byteOffset + buf.byteLength) <= buf.buffer.byteLength ? buf : buf.slice();
+    }
+    public readSchema(throwIfNull = false) {
+        const type = MessageHeader.Schema;
+        const message = this.readMessage(type);
+        const schema = message?.header();
+        if (throwIfNull && !schema) {
+            throw new Error(nullMessage(type));
+        }
+        return schema;
+    }
+    protected readMetadataLength(): IteratorResult<number> {
+        const buf = this.source.read(PADDING);
+        const bb = buf && new ByteBuffer(buf);
+        const len = bb?.readInt32(0) || 0;
+        return { done: len === 0, value: len };
+    }
+    protected readMetadata(metadataLength: number): IteratorResult<Message> {
+        const buf = this.source.read(metadataLength);
+        if (!buf) { return ITERATOR_DONE; }
+        if (buf.byteLength < metadataLength) {
+            throw new Error(invalidMessageMetadata(metadataLength, buf.byteLength));
+        }
+        return { done: false, value: Message.decode(buf) };
+    }
+}
+
+/** @ignore */
+export class AsyncMessageReader implements AsyncIterableIterator<Message> {
+    protected source: AsyncByteStream;
+    constructor(source: ReadableSource<Uint8Array>);
+    constructor(source: FileHandle, byteLength?: number);
+    constructor(source: any, byteLength?: number) {
+        this.source = source instanceof AsyncByteStream ? source
+            : isFileHandle(source)
+                ? new AsyncRandomAccessFile(source, byteLength!)
+                : new AsyncByteStream(source);
+    }
+    public [Symbol.asyncIterator](): AsyncIterableIterator<Message> { return this as AsyncIterableIterator<Message>; }
+    public async next(): Promise<IteratorResult<Message>> {
+        let r;
+        if ((r = await this.readMetadataLength()).done) { return ITERATOR_DONE; }
+        // ARROW-6313: If the first 4 bytes are continuation indicator (-1), read
+        // the next 4 for the 32-bit metadata length. Otherwise, assume this is a
+        // pre-v0.15 message, where the first 4 bytes are the metadata length.
+        if ((r.value === -1) &&
+            (r = await this.readMetadataLength()).done) { return ITERATOR_DONE; }
+        if ((r = await this.readMetadata(r.value)).done) { return ITERATOR_DONE; }
+        return (<any>r) as IteratorResult<Message>;
+    }
+    public async throw(value?: any) { return await this.source.throw(value); }
+    public async return(value?: any) { return await this.source.return(value); }
+    public async readMessage<T extends MessageHeader>(type?: T | null) {
+        let r: IteratorResult<Message<T>>;
+        if ((r = await this.next()).done) { return null; }
+        if ((type != null) && r.value.headerType !== type) {
+            throw new Error(invalidMessageType(type));
+        }
+        return r.value;
+    }
+    public async readMessageBody(bodyLength: number): Promise<Uint8Array> {
+        if (bodyLength <= 0) { return new Uint8Array(0); }
+        const buf = toUint8Array(await this.source.read(bodyLength));
+        if (buf.byteLength < bodyLength) {
+            throw new Error(invalidMessageBodyLength(bodyLength, buf.byteLength));
+        }
+        // 1. Work around bugs in fs.ReadStream's internal Buffer pooling, see: https://github.com/nodejs/node/issues/24817
+        // 2. Work around https://github.com/whatwg/streams/blob/0ebe4b042e467d9876d80ae045de3843092ad797/reference-implementation/lib/helpers.js#L126
+        return /* 1. */ (buf.byteOffset % 8 === 0) &&
+               /* 2. */ (buf.byteOffset + buf.byteLength) <= buf.buffer.byteLength ? buf : buf.slice();
+    }
+    public async readSchema(throwIfNull = false) {
+        const type = MessageHeader.Schema;
+        const message = await this.readMessage(type);
+        const schema = message?.header();
+        if (throwIfNull && !schema) {
+            throw new Error(nullMessage(type));
+        }
+        return schema;
+    }
+    protected async readMetadataLength(): Promise<IteratorResult<number>> {
+        const buf = await this.source.read(PADDING);
+        const bb = buf && new ByteBuffer(buf);
+        const len = bb?.readInt32(0) || 0;
+        return { done: len === 0, value: len };
+    }
+    protected async readMetadata(metadataLength: number): Promise<IteratorResult<Message>> {
+        const buf = await this.source.read(metadataLength);
+        if (!buf) { return ITERATOR_DONE; }
+        if (buf.byteLength < metadataLength) {
+            throw new Error(invalidMessageMetadata(metadataLength, buf.byteLength));
+        }
+        return { done: false, value: Message.decode(buf) };
+    }
+}
+
+/** @ignore */
+export class JSONMessageReader extends MessageReader {
+    private _schema = false;
+    private _json: ArrowJSON;
+    private _body: any[] = [];
+    private _batchIndex = 0;
+    private _dictionaryIndex = 0;
+    constructor(source: ArrowJSON | ArrowJSONLike) {
+        super(new Uint8Array(0));
+        this._json = source instanceof ArrowJSON ? source : new ArrowJSON(source);
+    }
+    public next() {
+        const { _json } = this;
+        if (!this._schema) {
+            this._schema = true;
+            const message = Message.fromJSON(_json.schema, MessageHeader.Schema);
+            return { done: false, value: message };
+        }
+        if (this._dictionaryIndex < _json.dictionaries.length) {
+            const batch = _json.dictionaries[this._dictionaryIndex++];
+            this._body = batch['data']['columns'];
+            const message = Message.fromJSON(batch, MessageHeader.DictionaryBatch);
+            return { done: false, value: message };
+        }
+        if (this._batchIndex < _json.batches.length) {
+            const batch = _json.batches[this._batchIndex++];
+            this._body = batch['columns'];
+            const message = Message.fromJSON(batch, MessageHeader.RecordBatch);
+            return { done: false, value: message };
+        }
+        this._body = [];
+        return ITERATOR_DONE;
+    }
+    public readMessageBody(_bodyLength?: number) {
+        return flattenDataSources(this._body) as any;
+        function flattenDataSources(xs: any[]): any[][] {
+            return (xs || []).reduce<any[][]>((buffers, column: any) => [
+                ...buffers,
+                ...(column['VALIDITY'] && [column['VALIDITY']] || []),
+                ...(column['TYPE'] && [column['TYPE']] || []),
+                ...(column['OFFSET'] && [column['OFFSET']] || []),
+                ...(column['DATA'] && [column['DATA']] || []),
+                ...flattenDataSources(column['children'])
+            ], [] as any[][]);
+        }
+    }
+    public readMessage<T extends MessageHeader>(type?: T | null) {
+        let r: IteratorResult<Message<T>>;
+        if ((r = this.next()).done) { return null; }
+        if ((type != null) && r.value.headerType !== type) {
+            throw new Error(invalidMessageType(type));
+        }
+        return r.value;
+    }
+    public readSchema() {
+        const type = MessageHeader.Schema;
+        const message = this.readMessage(type);
+        const schema = message?.header();
+        if (!message || !schema) {
+            throw new Error(nullMessage(type));
+        }
+        return schema;
+    }
+}
+
+/** @ignore */
+export const PADDING = 4;
+/** @ignore */
+export const MAGIC_STR = 'ARROW1';
+/** @ignore */
+export const MAGIC = new Uint8Array(MAGIC_STR.length);
+
+for (let i = 0; i < MAGIC_STR.length; i += 1) {
+    MAGIC[i] = MAGIC_STR.codePointAt(i)!;
+}
+
+/** @ignore */
+export function checkForMagicArrowString(buffer: Uint8Array, index = 0) {
+    for (let i = -1, n = MAGIC.length; ++i < n;) {
+        if (MAGIC[i] !== buffer[index + i]) {
+            return false;
+        }
+    }
+    return true;
+}
+
+/** @ignore */
+export const magicLength = MAGIC.length;
+/** @ignore */
+export const magicAndPadding = magicLength + PADDING;
+/** @ignore */
+export const magicX2AndPadding = magicLength * 2 + PADDING;
diff --git a/igv_component/node_modules/apache-arrow/src/ipc/metadata/file.ts b/igv_component/node_modules/apache-arrow/src/ipc/metadata/file.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d0fe0aa81f5043a9fba1f199d735c6299a5e2f7b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/ipc/metadata/file.ts
@@ -0,0 +1,165 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+/* eslint-disable @typescript-eslint/naming-convention */
+
+import { Block as _Block } from '../../fb/block.js';
+import { Footer as _Footer } from '../../fb/footer.js';
+
+import * as flatbuffers from 'flatbuffers';
+
+import Long = flatbuffers.Long;
+import Builder = flatbuffers.Builder;
+import ByteBuffer = flatbuffers.ByteBuffer;
+
+import { Schema } from '../../schema.js';
+import { MetadataVersion } from '../../enum.js';
+import { toUint8Array } from '../../util/buffer.js';
+import { ArrayBufferViewInput } from '../../util/buffer.js';
+
+/** @ignore */
+class Footer_ {
+
+    /** @nocollapse */
+    public static decode(buf: ArrayBufferViewInput) {
+        buf = new ByteBuffer(toUint8Array(buf));
+        const footer = _Footer.getRootAsFooter(buf);
+        const schema = Schema.decode(footer.schema()!);
+        return new OffHeapFooter(schema, footer) as Footer_;
+    }
+
+    /** @nocollapse */
+    public static encode(footer: Footer_) {
+
+        const b: Builder = new Builder();
+        const schemaOffset = Schema.encode(b, footer.schema);
+
+        _Footer.startRecordBatchesVector(b, footer.numRecordBatches);
+        for (const rb of [...footer.recordBatches()].slice().reverse()) {
+            FileBlock.encode(b, rb);
+        }
+        const recordBatchesOffset = b.endVector();
+
+        _Footer.startDictionariesVector(b, footer.numDictionaries);
+        for (const db of [...footer.dictionaryBatches()].slice().reverse()) {
+            FileBlock.encode(b, db);
+        }
+
+        const dictionaryBatchesOffset = b.endVector();
+
+        _Footer.startFooter(b);
+        _Footer.addSchema(b, schemaOffset);
+        _Footer.addVersion(b, MetadataVersion.V4);
+        _Footer.addRecordBatches(b, recordBatchesOffset);
+        _Footer.addDictionaries(b, dictionaryBatchesOffset);
+        _Footer.finishFooterBuffer(b, _Footer.endFooter(b));
+
+        return b.asUint8Array();
+    }
+
+    declare protected _recordBatches: FileBlock[];
+    declare protected _dictionaryBatches: FileBlock[];
+    public get numRecordBatches() { return this._recordBatches.length; }
+    public get numDictionaries() { return this._dictionaryBatches.length; }
+
+    constructor(public schema: Schema,
+        public version: MetadataVersion = MetadataVersion.V4,
+        recordBatches?: FileBlock[], dictionaryBatches?: FileBlock[]) {
+        recordBatches && (this._recordBatches = recordBatches);
+        dictionaryBatches && (this._dictionaryBatches = dictionaryBatches);
+    }
+
+    public *recordBatches(): Iterable<FileBlock> {
+        for (let block, i = -1, n = this.numRecordBatches; ++i < n;) {
+            if (block = this.getRecordBatch(i)) { yield block; }
+        }
+    }
+
+    public *dictionaryBatches(): Iterable<FileBlock> {
+        for (let block, i = -1, n = this.numDictionaries; ++i < n;) {
+            if (block = this.getDictionaryBatch(i)) { yield block; }
+        }
+    }
+
+    public getRecordBatch(index: number) {
+        return index >= 0
+            && index < this.numRecordBatches
+            && this._recordBatches[index] || null;
+    }
+
+    public getDictionaryBatch(index: number) {
+        return index >= 0
+            && index < this.numDictionaries
+            && this._dictionaryBatches[index] || null;
+    }
+}
+
+export { Footer_ as Footer };
+
+/** @ignore */
+class OffHeapFooter extends Footer_ {
+
+    public get numRecordBatches() { return this._footer.recordBatchesLength(); }
+    public get numDictionaries() { return this._footer.dictionariesLength(); }
+
+    constructor(schema: Schema, protected _footer: _Footer) {
+        super(schema, _footer.version());
+    }
+
+    public getRecordBatch(index: number) {
+        if (index >= 0 && index < this.numRecordBatches) {
+            const fileBlock = this._footer.recordBatches(index);
+            if (fileBlock) { return FileBlock.decode(fileBlock); }
+        }
+        return null;
+    }
+
+    public getDictionaryBatch(index: number) {
+        if (index >= 0 && index < this.numDictionaries) {
+            const fileBlock = this._footer.dictionaries(index);
+            if (fileBlock) { return FileBlock.decode(fileBlock); }
+        }
+        return null;
+    }
+}
+
+/** @ignore */
+export class FileBlock {
+
+    /** @nocollapse */
+    public static decode(block: _Block) {
+        return new FileBlock(block.metaDataLength(), block.bodyLength(), block.offset());
+    }
+
+    /** @nocollapse */
+    public static encode(b: Builder, fileBlock: FileBlock) {
+        const { metaDataLength } = fileBlock;
+        const offset = new Long(fileBlock.offset, 0);
+        const bodyLength = new Long(fileBlock.bodyLength, 0);
+        return _Block.createBlock(b, offset, metaDataLength, bodyLength);
+    }
+
+    public offset: number;
+    public bodyLength: number;
+    public metaDataLength: number;
+
+    constructor(metaDataLength: number, bodyLength: Long | number, offset: Long | number) {
+        this.metaDataLength = metaDataLength;
+        this.offset = typeof offset === 'number' ? offset : offset.low;
+        this.bodyLength = typeof bodyLength === 'number' ? bodyLength : bodyLength.low;
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/ipc/metadata/json.ts b/igv_component/node_modules/apache-arrow/src/ipc/metadata/json.ts
new file mode 100644
index 0000000000000000000000000000000000000000..0fc1ca08019263ba9cc5b23bf91e5e1dd9839c2c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/ipc/metadata/json.ts
@@ -0,0 +1,206 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+/* eslint-disable brace-style */
+
+import { Schema, Field } from '../../schema.js';
+import {
+    DataType, Dictionary, TimeBitWidth,
+    Utf8, Binary, Decimal, FixedSizeBinary,
+    List, FixedSizeList, Map_, Struct, Union,
+    Bool, Null, Int, Float, Date_, Time, Interval, Timestamp, IntBitWidth, Int32, TKeys,
+} from '../../type.js';
+
+import { DictionaryBatch, RecordBatch, FieldNode, BufferRegion } from './message.js';
+import { TimeUnit, Precision, IntervalUnit, UnionMode, DateUnit } from '../../enum.js';
+
+/** @ignore */
+export function schemaFromJSON(_schema: any, dictionaries: Map<number, DataType> = new Map()) {
+    return new Schema(
+        schemaFieldsFromJSON(_schema, dictionaries),
+        customMetadataFromJSON(_schema['customMetadata']),
+        dictionaries
+    );
+}
+
+/** @ignore */
+export function recordBatchFromJSON(b: any) {
+    return new RecordBatch(
+        b['count'],
+        fieldNodesFromJSON(b['columns']),
+        buffersFromJSON(b['columns'])
+    );
+}
+
+/** @ignore */
+export function dictionaryBatchFromJSON(b: any) {
+    return new DictionaryBatch(
+        recordBatchFromJSON(b['data']),
+        b['id'], b['isDelta']
+    );
+}
+
+/** @ignore */
+function schemaFieldsFromJSON(_schema: any, dictionaries?: Map<number, DataType>) {
+    return (_schema['fields'] || []).filter(Boolean).map((f: any) => Field.fromJSON(f, dictionaries));
+}
+
+/** @ignore */
+function fieldChildrenFromJSON(_field: any, dictionaries?: Map<number, DataType>): Field[] {
+    return (_field['children'] || []).filter(Boolean).map((f: any) => Field.fromJSON(f, dictionaries));
+}
+
+/** @ignore */
+function fieldNodesFromJSON(xs: any[]): FieldNode[] {
+    return (xs || []).reduce<FieldNode[]>((fieldNodes, column: any) => [
+        ...fieldNodes,
+        new FieldNode(
+            column['count'],
+            nullCountFromJSON(column['VALIDITY'])
+        ),
+        ...fieldNodesFromJSON(column['children'])
+    ], [] as FieldNode[]);
+}
+
+/** @ignore */
+function buffersFromJSON(xs: any[], buffers: BufferRegion[] = []): BufferRegion[] {
+    for (let i = -1, n = (xs || []).length; ++i < n;) {
+        const column = xs[i];
+        column['VALIDITY'] && buffers.push(new BufferRegion(buffers.length, column['VALIDITY'].length));
+        column['TYPE'] && buffers.push(new BufferRegion(buffers.length, column['TYPE'].length));
+        column['OFFSET'] && buffers.push(new BufferRegion(buffers.length, column['OFFSET'].length));
+        column['DATA'] && buffers.push(new BufferRegion(buffers.length, column['DATA'].length));
+        buffers = buffersFromJSON(column['children'], buffers);
+    }
+    return buffers;
+}
+
+/** @ignore */
+function nullCountFromJSON(validity: number[]) {
+    return (validity || []).reduce((sum, val) => sum + +(val === 0), 0);
+}
+
+/** @ignore */
+export function fieldFromJSON(_field: any, dictionaries?: Map<number, DataType>) {
+
+    let id: number;
+    let keys: TKeys | null;
+    let field: Field | void;
+    let dictMeta: any;
+    let type: DataType<any>;
+    let dictType: Dictionary;
+
+    // If no dictionary encoding
+    if (!dictionaries || !(dictMeta = _field['dictionary'])) {
+        type = typeFromJSON(_field, fieldChildrenFromJSON(_field, dictionaries));
+        field = new Field(_field['name'], type, _field['nullable'], customMetadataFromJSON(_field['customMetadata']));
+    }
+    // If dictionary encoded and the first time we've seen this dictionary id, decode
+    // the data type and child fields, then wrap in a Dictionary type and insert the
+    // data type into the dictionary types map.
+    else if (!dictionaries.has(id = dictMeta['id'])) {
+        // a dictionary index defaults to signed 32 bit int if unspecified
+        keys = (keys = dictMeta['indexType']) ? indexTypeFromJSON(keys) as TKeys : new Int32();
+        dictionaries.set(id, type = typeFromJSON(_field, fieldChildrenFromJSON(_field, dictionaries)));
+        dictType = new Dictionary(type, keys, id, dictMeta['isOrdered']);
+        field = new Field(_field['name'], dictType, _field['nullable'], customMetadataFromJSON(_field['customMetadata']));
+    }
+    // If dictionary encoded, and have already seen this dictionary Id in the schema, then reuse the
+    // data type and wrap in a new Dictionary type and field.
+    else {
+        // a dictionary index defaults to signed 32 bit int if unspecified
+        keys = (keys = dictMeta['indexType']) ? indexTypeFromJSON(keys) as TKeys : new Int32();
+        dictType = new Dictionary(dictionaries.get(id)!, keys, id, dictMeta['isOrdered']);
+        field = new Field(_field['name'], dictType, _field['nullable'], customMetadataFromJSON(_field['customMetadata']));
+    }
+    return field || null;
+}
+
+/** @ignore */
+function customMetadataFromJSON(_metadata?: Record<string, string>) {
+    return new Map<string, string>(Object.entries(_metadata || {}));
+}
+
+/** @ignore */
+function indexTypeFromJSON(_type: any) {
+    return new Int(_type['isSigned'], _type['bitWidth']);
+}
+
+/** @ignore */
+function typeFromJSON(f: any, children?: Field[]): DataType<any> {
+
+    const typeId = f['type']['name'];
+
+    switch (typeId) {
+        case 'NONE': return new Null();
+        case 'null': return new Null();
+        case 'binary': return new Binary();
+        case 'utf8': return new Utf8();
+        case 'bool': return new Bool();
+        case 'list': return new List((children || [])[0]);
+        case 'struct': return new Struct(children || []);
+        case 'struct_': return new Struct(children || []);
+    }
+
+    switch (typeId) {
+        case 'int': {
+            const t = f['type'];
+            return new Int(t['isSigned'], t['bitWidth'] as IntBitWidth);
+        }
+        case 'floatingpoint': {
+            const t = f['type'];
+            return new Float(Precision[t['precision']] as any);
+        }
+        case 'decimal': {
+            const t = f['type'];
+            return new Decimal(t['scale'], t['precision'], t['bitWidth']);
+        }
+        case 'date': {
+            const t = f['type'];
+            return new Date_(DateUnit[t['unit']] as any);
+        }
+        case 'time': {
+            const t = f['type'];
+            return new Time(TimeUnit[t['unit']] as any, t['bitWidth'] as TimeBitWidth);
+        }
+        case 'timestamp': {
+            const t = f['type'];
+            return new Timestamp(TimeUnit[t['unit']] as any, t['timezone']);
+        }
+        case 'interval': {
+            const t = f['type'];
+            return new Interval(IntervalUnit[t['unit']] as any);
+        }
+        case 'union': {
+            const t = f['type'];
+            return new Union(UnionMode[t['mode']] as any, (t['typeIds'] || []), children || []);
+        }
+        case 'fixedsizebinary': {
+            const t = f['type'];
+            return new FixedSizeBinary(t['byteWidth']);
+        }
+        case 'fixedsizelist': {
+            const t = f['type'];
+            return new FixedSizeList(t['listSize'], (children || [])[0]);
+        }
+        case 'map': {
+            const t = f['type'];
+            return new Map_((children || [])[0], t['keysSorted']);
+        }
+    }
+    throw new Error(`Unrecognized type: "${typeId}"`);
+}
diff --git a/igv_component/node_modules/apache-arrow/src/ipc/metadata/message.ts b/igv_component/node_modules/apache-arrow/src/ipc/metadata/message.ts
new file mode 100644
index 0000000000000000000000000000000000000000..53501d55177a91cdaa303398ada93dcb076140c9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/ipc/metadata/message.ts
@@ -0,0 +1,619 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+/* eslint-disable brace-style */
+
+import * as flatbuffers from 'flatbuffers';
+
+import { Schema as _Schema } from '../../fb/schema.js';
+import { Int as _Int } from '../../fb/int.js';
+import { RecordBatch as _RecordBatch } from '../../fb/record-batch.js';
+import { DictionaryBatch as _DictionaryBatch } from '../../fb/dictionary-batch.js';
+import { Buffer as _Buffer } from '../../fb/buffer.js';
+import { Field as _Field } from '../../fb/field.js';
+import { FieldNode as _FieldNode } from '../../fb/field-node.js';
+import { DictionaryEncoding as _DictionaryEncoding } from '../../fb/dictionary-encoding.js';
+import { Type } from '../../fb/type.js';
+import { KeyValue as _KeyValue } from '../../fb/key-value.js';
+import { Endianness as _Endianness } from '../../fb/endianness.js';
+import { FloatingPoint as _FloatingPoint } from '../../fb/floating-point.js';
+import { Decimal as _Decimal } from '../../fb/decimal.js';
+import { Date as _Date } from '../../fb/date.js';
+import { Time as _Time } from '../../fb/time.js';
+import { Timestamp as _Timestamp } from '../../fb/timestamp.js';
+import { Interval as _Interval } from '../../fb/interval.js';
+import { Union as _Union } from '../../fb/union.js';
+import { FixedSizeBinary as _FixedSizeBinary } from '../../fb/fixed-size-binary.js';
+import { FixedSizeList as _FixedSizeList } from '../../fb/fixed-size-list.js';
+import { Map as _Map } from '../../fb/map.js';
+import { Message as _Message } from '../../fb/message.js';
+
+import { Schema, Field } from '../../schema.js';
+import { toUint8Array } from '../../util/buffer.js';
+import { ArrayBufferViewInput } from '../../util/buffer.js';
+import { MessageHeader, MetadataVersion } from '../../enum.js';
+import { instance as typeAssembler } from '../../visitor/typeassembler.js';
+import { fieldFromJSON, schemaFromJSON, recordBatchFromJSON, dictionaryBatchFromJSON } from './json.js';
+
+import Long = flatbuffers.Long;
+import Builder = flatbuffers.Builder;
+import ByteBuffer = flatbuffers.ByteBuffer;
+
+import {
+    DataType, Dictionary, TimeBitWidth,
+    Utf8, Binary, Decimal, FixedSizeBinary,
+    List, FixedSizeList, Map_, Struct, Union,
+    Bool, Null, Int, Float, Date_, Time, Interval, Timestamp, IntBitWidth, Int32, TKeys,
+} from '../../type.js';
+
+/**
+ * @ignore
+ * @private
+ **/
+export class Message<T extends MessageHeader = any> {
+
+    /** @nocollapse */
+    public static fromJSON<T extends MessageHeader>(msg: any, headerType: T): Message<T> {
+        const message = new Message(0, MetadataVersion.V4, headerType);
+        message._createHeader = messageHeaderFromJSON(msg, headerType);
+        return message;
+    }
+
+    /** @nocollapse */
+    public static decode(buf: ArrayBufferViewInput) {
+        buf = new ByteBuffer(toUint8Array(buf));
+        const _message = _Message.getRootAsMessage(buf);
+        const bodyLength: Long = _message.bodyLength()!;
+        const version: MetadataVersion = _message.version();
+        const headerType: MessageHeader = _message.headerType();
+        const message = new Message(bodyLength, version, headerType);
+        message._createHeader = decodeMessageHeader(_message, headerType);
+        return message;
+    }
+
+    /** @nocollapse */
+    public static encode<T extends MessageHeader>(message: Message<T>) {
+        const b = new Builder();
+        let headerOffset = -1;
+        if (message.isSchema()) {
+            headerOffset = Schema.encode(b, message.header() as Schema);
+        } else if (message.isRecordBatch()) {
+            headerOffset = RecordBatch.encode(b, message.header() as RecordBatch);
+        } else if (message.isDictionaryBatch()) {
+            headerOffset = DictionaryBatch.encode(b, message.header() as DictionaryBatch);
+        }
+        _Message.startMessage(b);
+        _Message.addVersion(b, MetadataVersion.V4);
+        _Message.addHeader(b, headerOffset);
+        _Message.addHeaderType(b, message.headerType);
+        _Message.addBodyLength(b, new Long(message.bodyLength, 0));
+        _Message.finishMessageBuffer(b, _Message.endMessage(b));
+        return b.asUint8Array();
+    }
+
+    /** @nocollapse */
+    public static from(header: Schema | RecordBatch | DictionaryBatch, bodyLength = 0) {
+        if (header instanceof Schema) {
+            return new Message(0, MetadataVersion.V4, MessageHeader.Schema, header);
+        }
+        if (header instanceof RecordBatch) {
+            return new Message(bodyLength, MetadataVersion.V4, MessageHeader.RecordBatch, header);
+        }
+        if (header instanceof DictionaryBatch) {
+            return new Message(bodyLength, MetadataVersion.V4, MessageHeader.DictionaryBatch, header);
+        }
+        throw new Error(`Unrecognized Message header: ${header}`);
+    }
+
+    public body: Uint8Array;
+    protected _headerType: T;
+    protected _bodyLength: number;
+    protected _version: MetadataVersion;
+    public get type() { return this.headerType; }
+    public get version() { return this._version; }
+    public get headerType() { return this._headerType; }
+    public get bodyLength() { return this._bodyLength; }
+    declare protected _createHeader: MessageHeaderDecoder;
+    public header() { return this._createHeader<T>(); }
+    public isSchema(): this is Message<MessageHeader.Schema> { return this.headerType === MessageHeader.Schema; }
+    public isRecordBatch(): this is Message<MessageHeader.RecordBatch> { return this.headerType === MessageHeader.RecordBatch; }
+    public isDictionaryBatch(): this is Message<MessageHeader.DictionaryBatch> { return this.headerType === MessageHeader.DictionaryBatch; }
+
+    constructor(bodyLength: Long | number, version: MetadataVersion, headerType: T, header?: any) {
+        this._version = version;
+        this._headerType = headerType;
+        this.body = new Uint8Array(0);
+        header && (this._createHeader = () => header);
+        this._bodyLength = typeof bodyLength === 'number' ? bodyLength : bodyLength.low;
+    }
+}
+
+/**
+ * @ignore
+ * @private
+ **/
+export class RecordBatch {
+    protected _length: number;
+    protected _nodes: FieldNode[];
+    protected _buffers: BufferRegion[];
+    public get nodes() { return this._nodes; }
+    public get length() { return this._length; }
+    public get buffers() { return this._buffers; }
+    constructor(length: Long | number, nodes: FieldNode[], buffers: BufferRegion[]) {
+        this._nodes = nodes;
+        this._buffers = buffers;
+        this._length = typeof length === 'number' ? length : length.low;
+    }
+}
+
+/**
+ * @ignore
+ * @private
+ **/
+export class DictionaryBatch {
+
+    protected _id: number;
+    protected _isDelta: boolean;
+    protected _data: RecordBatch;
+    public get id() { return this._id; }
+    public get data() { return this._data; }
+    public get isDelta() { return this._isDelta; }
+    public get length(): number { return this.data.length; }
+    public get nodes(): FieldNode[] { return this.data.nodes; }
+    public get buffers(): BufferRegion[] { return this.data.buffers; }
+
+    constructor(data: RecordBatch, id: Long | number, isDelta = false) {
+        this._data = data;
+        this._isDelta = isDelta;
+        this._id = typeof id === 'number' ? id : id.low;
+    }
+}
+
+/**
+ * @ignore
+ * @private
+ **/
+export class BufferRegion {
+    public offset: number;
+    public length: number;
+    constructor(offset: Long | number, length: Long | number) {
+        this.offset = typeof offset === 'number' ? offset : offset.low;
+        this.length = typeof length === 'number' ? length : length.low;
+    }
+}
+
+/**
+ * @ignore
+ * @private
+ **/
+export class FieldNode {
+    public length: number;
+    public nullCount: number;
+    constructor(length: Long | number, nullCount: Long | number) {
+        this.length = typeof length === 'number' ? length : length.low;
+        this.nullCount = typeof nullCount === 'number' ? nullCount : nullCount.low;
+    }
+}
+
+/** @ignore */
+function messageHeaderFromJSON(message: any, type: MessageHeader) {
+    return (() => {
+        switch (type) {
+            case MessageHeader.Schema: return Schema.fromJSON(message);
+            case MessageHeader.RecordBatch: return RecordBatch.fromJSON(message);
+            case MessageHeader.DictionaryBatch: return DictionaryBatch.fromJSON(message);
+        }
+        throw new Error(`Unrecognized Message type: { name: ${MessageHeader[type]}, type: ${type} }`);
+    }) as MessageHeaderDecoder;
+}
+
+/** @ignore */
+function decodeMessageHeader(message: _Message, type: MessageHeader) {
+    return (() => {
+        switch (type) {
+            case MessageHeader.Schema: return Schema.decode(message.header(new _Schema())!);
+            case MessageHeader.RecordBatch: return RecordBatch.decode(message.header(new _RecordBatch())!, message.version());
+            case MessageHeader.DictionaryBatch: return DictionaryBatch.decode(message.header(new _DictionaryBatch())!, message.version());
+        }
+        throw new Error(`Unrecognized Message type: { name: ${MessageHeader[type]}, type: ${type} }`);
+    }) as MessageHeaderDecoder;
+}
+
+Field['encode'] = encodeField;
+Field['decode'] = decodeField;
+Field['fromJSON'] = fieldFromJSON;
+
+Schema['encode'] = encodeSchema;
+Schema['decode'] = decodeSchema;
+Schema['fromJSON'] = schemaFromJSON;
+
+RecordBatch['encode'] = encodeRecordBatch;
+RecordBatch['decode'] = decodeRecordBatch;
+RecordBatch['fromJSON'] = recordBatchFromJSON;
+
+DictionaryBatch['encode'] = encodeDictionaryBatch;
+DictionaryBatch['decode'] = decodeDictionaryBatch;
+DictionaryBatch['fromJSON'] = dictionaryBatchFromJSON;
+
+FieldNode['encode'] = encodeFieldNode;
+FieldNode['decode'] = decodeFieldNode;
+
+BufferRegion['encode'] = encodeBufferRegion;
+BufferRegion['decode'] = decodeBufferRegion;
+
+declare module '../../schema' {
+    namespace Field {
+        export { encodeField as encode };
+        export { decodeField as decode };
+        export { fieldFromJSON as fromJSON };
+    }
+    namespace Schema {
+        export { encodeSchema as encode };
+        export { decodeSchema as decode };
+        export { schemaFromJSON as fromJSON };
+    }
+}
+
+declare module './message' {
+    namespace RecordBatch {
+        export { encodeRecordBatch as encode };
+        export { decodeRecordBatch as decode };
+        export { recordBatchFromJSON as fromJSON };
+    }
+    namespace DictionaryBatch {
+        export { encodeDictionaryBatch as encode };
+        export { decodeDictionaryBatch as decode };
+        export { dictionaryBatchFromJSON as fromJSON };
+    }
+    namespace FieldNode {
+        export { encodeFieldNode as encode };
+        export { decodeFieldNode as decode };
+    }
+    namespace BufferRegion {
+        export { encodeBufferRegion as encode };
+        export { decodeBufferRegion as decode };
+    }
+}
+
+/** @ignore */
+function decodeSchema(_schema: _Schema, dictionaries: Map<number, DataType> = new Map()) {
+    const fields = decodeSchemaFields(_schema, dictionaries);
+    return new Schema(fields, decodeCustomMetadata(_schema), dictionaries);
+}
+
+/** @ignore */
+function decodeRecordBatch(batch: _RecordBatch, version = MetadataVersion.V4) {
+    if (batch.compression() !== null) {
+        throw new Error('Record batch compression not implemented');
+    }
+    return new RecordBatch(batch.length(), decodeFieldNodes(batch), decodeBuffers(batch, version));
+}
+
+/** @ignore */
+function decodeDictionaryBatch(batch: _DictionaryBatch, version = MetadataVersion.V4) {
+    return new DictionaryBatch(RecordBatch.decode(batch.data()!, version), batch.id(), batch.isDelta());
+}
+
+/** @ignore */
+function decodeBufferRegion(b: _Buffer) {
+    return new BufferRegion(b.offset(), b.length());
+}
+
+/** @ignore */
+function decodeFieldNode(f: _FieldNode) {
+    return new FieldNode(f.length(), f.nullCount());
+}
+
+/** @ignore */
+function decodeFieldNodes(batch: _RecordBatch) {
+    const nodes = [] as FieldNode[];
+    for (let f, i = -1, j = -1, n = batch.nodesLength(); ++i < n;) {
+        if (f = batch.nodes(i)) {
+            nodes[++j] = FieldNode.decode(f);
+        }
+    }
+    return nodes;
+}
+
+/** @ignore */
+function decodeBuffers(batch: _RecordBatch, version: MetadataVersion) {
+    const bufferRegions = [] as BufferRegion[];
+    for (let b, i = -1, j = -1, n = batch.buffersLength(); ++i < n;) {
+        if (b = batch.buffers(i)) {
+            // If this Arrow buffer was written before version 4,
+            // advance the buffer's bb_pos 8 bytes to skip past
+            // the now-removed page_id field
+            if (version < MetadataVersion.V4) {
+                b.bb_pos += (8 * (i + 1));
+            }
+            bufferRegions[++j] = BufferRegion.decode(b);
+        }
+    }
+    return bufferRegions;
+}
+
+/** @ignore */
+function decodeSchemaFields(schema: _Schema, dictionaries?: Map<number, DataType>) {
+    const fields = [] as Field[];
+    for (let f, i = -1, j = -1, n = schema.fieldsLength(); ++i < n;) {
+        if (f = schema.fields(i)) {
+            fields[++j] = Field.decode(f, dictionaries);
+        }
+    }
+    return fields;
+}
+
+/** @ignore */
+function decodeFieldChildren(field: _Field, dictionaries?: Map<number, DataType>): Field[] {
+    const children = [] as Field[];
+    for (let f, i = -1, j = -1, n = field.childrenLength(); ++i < n;) {
+        if (f = field.children(i)) {
+            children[++j] = Field.decode(f, dictionaries);
+        }
+    }
+    return children;
+}
+
+/** @ignore */
+function decodeField(f: _Field, dictionaries?: Map<number, DataType>) {
+
+    let id: number;
+    let field: Field | void;
+    let type: DataType<any>;
+    let keys: _Int | TKeys | null;
+    let dictType: Dictionary;
+    let dictMeta: _DictionaryEncoding | null;
+
+    // If no dictionary encoding
+    if (!dictionaries || !(dictMeta = f.dictionary())) {
+        type = decodeFieldType(f, decodeFieldChildren(f, dictionaries));
+        field = new Field(f.name()!, type, f.nullable(), decodeCustomMetadata(f));
+    }
+    // If dictionary encoded and the first time we've seen this dictionary id, decode
+    // the data type and child fields, then wrap in a Dictionary type and insert the
+    // data type into the dictionary types map.
+    else if (!dictionaries.has(id = dictMeta.id().low)) {
+        // a dictionary index defaults to signed 32 bit int if unspecified
+        keys = (keys = dictMeta.indexType()) ? decodeIndexType(keys) as TKeys : new Int32();
+        dictionaries.set(id, type = decodeFieldType(f, decodeFieldChildren(f, dictionaries)));
+        dictType = new Dictionary(type, keys, id, dictMeta.isOrdered());
+        field = new Field(f.name()!, dictType, f.nullable(), decodeCustomMetadata(f));
+    }
+    // If dictionary encoded, and have already seen this dictionary Id in the schema, then reuse the
+    // data type and wrap in a new Dictionary type and field.
+    else {
+        // a dictionary index defaults to signed 32 bit int if unspecified
+        keys = (keys = dictMeta.indexType()) ? decodeIndexType(keys) as TKeys : new Int32();
+        dictType = new Dictionary(dictionaries.get(id)!, keys, id, dictMeta.isOrdered());
+        field = new Field(f.name()!, dictType, f.nullable(), decodeCustomMetadata(f));
+    }
+    return field || null;
+}
+
+/** @ignore */
+function decodeCustomMetadata(parent?: _Schema | _Field | null) {
+    const data = new Map<string, string>();
+    if (parent) {
+        for (let entry, key, i = -1, n = Math.trunc(parent.customMetadataLength()); ++i < n;) {
+            if ((entry = parent.customMetadata(i)) && (key = entry.key()) != null) {
+                data.set(key, entry.value()!);
+            }
+        }
+    }
+    return data;
+}
+
+/** @ignore */
+function decodeIndexType(_type: _Int) {
+    return new Int(_type.isSigned(), _type.bitWidth() as IntBitWidth);
+}
+
+/** @ignore */
+function decodeFieldType(f: _Field, children?: Field[]): DataType<any> {
+
+    const typeId = f.typeType();
+
+    switch (typeId) {
+        case Type['NONE']: return new Null();
+        case Type['Null']: return new Null();
+        case Type['Binary']: return new Binary();
+        case Type['Utf8']: return new Utf8();
+        case Type['Bool']: return new Bool();
+        case Type['List']: return new List((children || [])[0]);
+        case Type['Struct_']: return new Struct(children || []);
+    }
+
+    switch (typeId) {
+        case Type['Int']: {
+            const t = f.type(new _Int())!;
+            return new Int(t.isSigned(), t.bitWidth());
+        }
+        case Type['FloatingPoint']: {
+            const t = f.type(new _FloatingPoint())!;
+            return new Float(t.precision());
+        }
+        case Type['Decimal']: {
+            const t = f.type(new _Decimal())!;
+            return new Decimal(t.scale(), t.precision(), t.bitWidth());
+        }
+        case Type['Date']: {
+            const t = f.type(new _Date())!;
+            return new Date_(t.unit());
+        }
+        case Type['Time']: {
+            const t = f.type(new _Time())!;
+            return new Time(t.unit(), t.bitWidth() as TimeBitWidth);
+        }
+        case Type['Timestamp']: {
+            const t = f.type(new _Timestamp())!;
+            return new Timestamp(t.unit(), t.timezone());
+        }
+        case Type['Interval']: {
+            const t = f.type(new _Interval())!;
+            return new Interval(t.unit());
+        }
+        case Type['Union']: {
+            const t = f.type(new _Union())!;
+            return new Union(t.mode(), t.typeIdsArray() || [], children || []);
+        }
+        case Type['FixedSizeBinary']: {
+            const t = f.type(new _FixedSizeBinary())!;
+            return new FixedSizeBinary(t.byteWidth());
+        }
+        case Type['FixedSizeList']: {
+            const t = f.type(new _FixedSizeList())!;
+            return new FixedSizeList(t.listSize(), (children || [])[0]);
+        }
+        case Type['Map']: {
+            const t = f.type(new _Map())!;
+            return new Map_((children || [])[0], t.keysSorted());
+        }
+    }
+    throw new Error(`Unrecognized type: "${Type[typeId]}" (${typeId})`);
+}
+
+/** @ignore */
+function encodeSchema(b: Builder, schema: Schema) {
+
+    const fieldOffsets = schema.fields.map((f) => Field.encode(b, f));
+
+    _Schema.startFieldsVector(b, fieldOffsets.length);
+
+    const fieldsVectorOffset = _Schema.createFieldsVector(b, fieldOffsets);
+
+    const metadataOffset = !(schema.metadata && schema.metadata.size > 0) ? -1 :
+        _Schema.createCustomMetadataVector(b, [...schema.metadata].map(([k, v]) => {
+            const key = b.createString(`${k}`);
+            const val = b.createString(`${v}`);
+            _KeyValue.startKeyValue(b);
+            _KeyValue.addKey(b, key);
+            _KeyValue.addValue(b, val);
+            return _KeyValue.endKeyValue(b);
+        }));
+
+    _Schema.startSchema(b);
+    _Schema.addFields(b, fieldsVectorOffset);
+    _Schema.addEndianness(b, platformIsLittleEndian ? _Endianness.Little : _Endianness.Big);
+
+    if (metadataOffset !== -1) { _Schema.addCustomMetadata(b, metadataOffset); }
+
+    return _Schema.endSchema(b);
+}
+
+/** @ignore */
+function encodeField(b: Builder, field: Field) {
+
+    let nameOffset = -1;
+    let typeOffset = -1;
+    let dictionaryOffset = -1;
+
+    const type = field.type;
+    let typeId: Type = <any>field.typeId;
+
+    if (!DataType.isDictionary(type)) {
+        typeOffset = typeAssembler.visit(type, b)!;
+    } else {
+        typeId = type.dictionary.typeId;
+        dictionaryOffset = typeAssembler.visit(type, b)!;
+        typeOffset = typeAssembler.visit(type.dictionary, b)!;
+    }
+
+    const childOffsets = (type.children || []).map((f: Field) => Field.encode(b, f));
+    const childrenVectorOffset = _Field.createChildrenVector(b, childOffsets);
+
+    const metadataOffset = !(field.metadata && field.metadata.size > 0) ? -1 :
+        _Field.createCustomMetadataVector(b, [...field.metadata].map(([k, v]) => {
+            const key = b.createString(`${k}`);
+            const val = b.createString(`${v}`);
+            _KeyValue.startKeyValue(b);
+            _KeyValue.addKey(b, key);
+            _KeyValue.addValue(b, val);
+            return _KeyValue.endKeyValue(b);
+        }));
+
+    if (field.name) {
+        nameOffset = b.createString(field.name);
+    }
+
+    _Field.startField(b);
+    _Field.addType(b, typeOffset);
+    _Field.addTypeType(b, typeId);
+    _Field.addChildren(b, childrenVectorOffset);
+    _Field.addNullable(b, !!field.nullable);
+
+    if (nameOffset !== -1) { _Field.addName(b, nameOffset); }
+    if (dictionaryOffset !== -1) { _Field.addDictionary(b, dictionaryOffset); }
+    if (metadataOffset !== -1) { _Field.addCustomMetadata(b, metadataOffset); }
+
+    return _Field.endField(b);
+}
+
+/** @ignore */
+function encodeRecordBatch(b: Builder, recordBatch: RecordBatch) {
+
+    const nodes = recordBatch.nodes || [];
+    const buffers = recordBatch.buffers || [];
+
+    _RecordBatch.startNodesVector(b, nodes.length);
+    for (const n of nodes.slice().reverse()) FieldNode.encode(b, n);
+
+    const nodesVectorOffset = b.endVector();
+
+    _RecordBatch.startBuffersVector(b, buffers.length);
+    for (const b_ of buffers.slice().reverse()) BufferRegion.encode(b, b_);
+
+    const buffersVectorOffset = b.endVector();
+
+    _RecordBatch.startRecordBatch(b);
+    _RecordBatch.addLength(b, new Long(recordBatch.length, 0));
+    _RecordBatch.addNodes(b, nodesVectorOffset);
+    _RecordBatch.addBuffers(b, buffersVectorOffset);
+    return _RecordBatch.endRecordBatch(b);
+}
+
+/** @ignore */
+function encodeDictionaryBatch(b: Builder, dictionaryBatch: DictionaryBatch) {
+    const dataOffset = RecordBatch.encode(b, dictionaryBatch.data);
+    _DictionaryBatch.startDictionaryBatch(b);
+    _DictionaryBatch.addId(b, new Long(dictionaryBatch.id, 0));
+    _DictionaryBatch.addIsDelta(b, dictionaryBatch.isDelta);
+    _DictionaryBatch.addData(b, dataOffset);
+    return _DictionaryBatch.endDictionaryBatch(b);
+}
+
+/** @ignore */
+function encodeFieldNode(b: Builder, node: FieldNode) {
+    return _FieldNode.createFieldNode(b, new Long(node.length, 0), new Long(node.nullCount, 0));
+}
+
+/** @ignore */
+function encodeBufferRegion(b: Builder, node: BufferRegion) {
+    return _Buffer.createBuffer(b, new Long(node.offset, 0), new Long(node.length, 0));
+}
+
+/** @ignore */
+const platformIsLittleEndian = (() => {
+    const buffer = new ArrayBuffer(2);
+    new DataView(buffer).setInt16(0, 256, true /* littleEndian */);
+    // Int16Array uses the platform's endianness.
+    return new Int16Array(buffer)[0] === 256;
+})();
+
+/** @ignore */
+type MessageHeaderDecoder = <T extends MessageHeader>() => T extends MessageHeader.Schema ? Schema
+    : T extends MessageHeader.RecordBatch ? RecordBatch
+    : T extends MessageHeader.DictionaryBatch ? DictionaryBatch : never;
diff --git a/igv_component/node_modules/apache-arrow/src/ipc/reader.ts b/igv_component/node_modules/apache-arrow/src/ipc/reader.ts
new file mode 100644
index 0000000000000000000000000000000000000000..77496e799b871d4705f87c7a6a61cd9aafd10c79
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/ipc/reader.ts
@@ -0,0 +1,747 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { makeData } from '../data.js';
+import { Vector } from '../vector.js';
+import { DataType, Struct, TypeMap } from '../type.js';
+import { MessageHeader } from '../enum.js';
+import { Footer } from './metadata/file.js';
+import { Schema, Field } from '../schema.js';
+import streamAdapters from '../io/adapters.js';
+import { Message } from './metadata/message.js';
+import * as metadata from './metadata/message.js';
+import { ArrayBufferViewInput } from '../util/buffer.js';
+import { ByteStream, AsyncByteStream } from '../io/stream.js';
+import { RandomAccessFile, AsyncRandomAccessFile } from '../io/file.js';
+import { VectorLoader, JSONVectorLoader } from '../visitor/vectorloader.js';
+import { RecordBatch, _InternalEmptyPlaceholderRecordBatch } from '../recordbatch.js';
+import {
+    FileHandle,
+    ArrowJSONLike,
+    ITERATOR_DONE,
+    ReadableInterop,
+} from '../io/interfaces.js';
+import {
+    MessageReader, AsyncMessageReader, JSONMessageReader,
+    checkForMagicArrowString, magicLength, magicAndPadding, magicX2AndPadding
+} from './message.js';
+import {
+    isPromise,
+    isIterable, isAsyncIterable,
+    isIteratorResult, isArrowJSON,
+    isFileHandle, isFetchResponse,
+    isReadableDOMStream, isReadableNodeStream
+} from '../util/compat.js';
+
+/** @ignore */ export type FromArg0 = ArrowJSONLike;
+/** @ignore */ export type FromArg1 = PromiseLike<ArrowJSONLike>;
+/** @ignore */ export type FromArg2 = Iterable<ArrayBufferViewInput> | ArrayBufferViewInput;
+/** @ignore */ export type FromArg3 = PromiseLike<Iterable<ArrayBufferViewInput> | ArrayBufferViewInput>;
+/** @ignore */ export type FromArg4 = Response | NodeJS.ReadableStream | ReadableStream<ArrayBufferViewInput> | AsyncIterable<ArrayBufferViewInput>;
+/** @ignore */ export type FromArg5 = FileHandle | PromiseLike<FileHandle> | PromiseLike<FromArg4>;
+/** @ignore */ export type FromArgs = FromArg0 | FromArg1 | FromArg2 | FromArg3 | FromArg4 | FromArg5;
+
+/** @ignore */ type OpenOptions = { autoDestroy?: boolean };
+/** @ignore */ type RecordBatchReaders<T extends TypeMap = any> = RecordBatchFileReader<T> | RecordBatchStreamReader<T>;
+/** @ignore */ type AsyncRecordBatchReaders<T extends TypeMap = any> = AsyncRecordBatchFileReader<T> | AsyncRecordBatchStreamReader<T>;
+/** @ignore */ type RecordBatchFileReaders<T extends TypeMap = any> = RecordBatchFileReader<T> | AsyncRecordBatchFileReader<T>;
+/** @ignore */ type RecordBatchStreamReaders<T extends TypeMap = any> = RecordBatchStreamReader<T> | AsyncRecordBatchStreamReader<T>;
+
+export class RecordBatchReader<T extends TypeMap = any> extends ReadableInterop<RecordBatch<T>> {
+
+    protected _impl: RecordBatchReaderImpls<T>;
+    protected constructor(impl: RecordBatchReaderImpls<T>) {
+        super();
+        this._impl = impl;
+    }
+
+    public get closed() { return this._impl.closed; }
+    public get schema() { return this._impl.schema; }
+    public get autoDestroy() { return this._impl.autoDestroy; }
+    public get dictionaries() { return this._impl.dictionaries; }
+    public get numDictionaries() { return this._impl.numDictionaries; }
+    public get numRecordBatches() { return this._impl.numRecordBatches; }
+    public get footer(): Footer | null { return this._impl.isFile() ? this._impl.footer : null; }
+
+    public isSync(): this is RecordBatchReaders<T> { return this._impl.isSync(); }
+    public isAsync(): this is AsyncRecordBatchReaders<T> { return this._impl.isAsync(); }
+    public isFile(): this is RecordBatchFileReaders<T> { return this._impl.isFile(); }
+    public isStream(): this is RecordBatchStreamReaders<T> { return this._impl.isStream(); }
+
+    public next() {
+        return this._impl.next();
+    }
+    public throw(value?: any) {
+        return this._impl.throw(value);
+    }
+    public return(value?: any) {
+        return this._impl.return(value);
+    }
+    public cancel() {
+        return this._impl.cancel();
+    }
+    public reset(schema?: Schema<T> | null): this {
+        this._impl.reset(schema);
+        this._DOMStream = undefined;
+        this._nodeStream = undefined;
+        return this;
+    }
+    public open(options?: OpenOptions) {
+        const opening = this._impl.open(options);
+        return isPromise(opening) ? opening.then(() => this) : this;
+    }
+    public readRecordBatch(index: number): RecordBatch<T> | null | Promise<RecordBatch<T> | null> {
+        return this._impl.isFile() ? this._impl.readRecordBatch(index) : null;
+    }
+    public [Symbol.iterator](): IterableIterator<RecordBatch<T>> {
+        return (<IterableIterator<RecordBatch<T>>>this._impl)[Symbol.iterator]();
+    }
+    public [Symbol.asyncIterator](): AsyncIterableIterator<RecordBatch<T>> {
+        return (<AsyncIterableIterator<RecordBatch<T>>>this._impl)[Symbol.asyncIterator]();
+    }
+    public toDOMStream() {
+        return streamAdapters.toDOMStream<RecordBatch<T>>(
+            (this.isSync()
+                ? { [Symbol.iterator]: () => this } as Iterable<RecordBatch<T>>
+                : { [Symbol.asyncIterator]: () => this } as AsyncIterable<RecordBatch<T>>));
+    }
+    public toNodeStream() {
+        return streamAdapters.toNodeStream<RecordBatch<T>>(
+            (this.isSync()
+                ? { [Symbol.iterator]: () => this } as Iterable<RecordBatch<T>>
+                : { [Symbol.asyncIterator]: () => this } as AsyncIterable<RecordBatch<T>>),
+            { objectMode: true });
+    }
+
+    /** @nocollapse */
+    // @ts-ignore
+    public static throughNode(options?: import('stream').DuplexOptions & { autoDestroy: boolean }): import('stream').Duplex {
+        throw new Error(`"throughNode" not available in this environment`);
+    }
+    /** @nocollapse */
+    public static throughDOM<T extends TypeMap>(
+        // @ts-ignore
+        writableStrategy?: ByteLengthQueuingStrategy,
+        // @ts-ignore
+        readableStrategy?: { autoDestroy: boolean }
+    ): { writable: WritableStream<Uint8Array>; readable: ReadableStream<RecordBatch<T>> } {
+        throw new Error(`"throughDOM" not available in this environment`);
+    }
+
+    public static from<T extends RecordBatchReader>(source: T): T;
+    public static from<T extends TypeMap = any>(source: FromArg0): RecordBatchStreamReader<T>;
+    public static from<T extends TypeMap = any>(source: FromArg1): Promise<RecordBatchStreamReader<T>>;
+    public static from<T extends TypeMap = any>(source: FromArg2): RecordBatchFileReader<T> | RecordBatchStreamReader<T>;
+    public static from<T extends TypeMap = any>(source: FromArg3): Promise<RecordBatchFileReader<T> | RecordBatchStreamReader<T>>;
+    public static from<T extends TypeMap = any>(source: FromArg4): Promise<AsyncRecordBatchFileReader<T> | AsyncRecordBatchStreamReader<T>>;
+    public static from<T extends TypeMap = any>(source: FromArg5): Promise<AsyncRecordBatchFileReader<T> | AsyncRecordBatchStreamReader<T>>;
+    /** @nocollapse */
+    public static from<T extends TypeMap = any>(source: any) {
+        if (source instanceof RecordBatchReader) {
+            return source;
+        } else if (isArrowJSON(source)) {
+            return fromArrowJSON<T>(source);
+        } else if (isFileHandle(source)) {
+            return fromFileHandle<T>(source);
+        } else if (isPromise<any>(source)) {
+            return (async () => await RecordBatchReader.from<any>(await source))();
+        } else if (isFetchResponse(source) || isReadableDOMStream(source) || isReadableNodeStream(source) || isAsyncIterable(source)) {
+            return fromAsyncByteStream<T>(new AsyncByteStream(source));
+        }
+        return fromByteStream<T>(new ByteStream(source));
+    }
+
+    public static readAll<T extends RecordBatchReader>(source: T): T extends RecordBatchReaders ? IterableIterator<T> : AsyncIterableIterator<T>;
+    public static readAll<T extends TypeMap = any>(source: FromArg0): IterableIterator<RecordBatchStreamReader<T>>;
+    public static readAll<T extends TypeMap = any>(source: FromArg1): AsyncIterableIterator<RecordBatchStreamReader<T>>;
+    public static readAll<T extends TypeMap = any>(source: FromArg2): IterableIterator<RecordBatchFileReader<T> | RecordBatchStreamReader<T>>;
+    public static readAll<T extends TypeMap = any>(source: FromArg3): AsyncIterableIterator<RecordBatchFileReader<T> | RecordBatchStreamReader<T>>;
+    public static readAll<T extends TypeMap = any>(source: FromArg4): AsyncIterableIterator<AsyncRecordBatchReaders<T>>;
+    public static readAll<T extends TypeMap = any>(source: FromArg5): AsyncIterableIterator<AsyncRecordBatchReaders<T>>;
+    /** @nocollapse */
+    public static readAll<T extends TypeMap = any>(source: any) {
+        if (source instanceof RecordBatchReader) {
+            return source.isSync() ? readAllSync(source) : readAllAsync(source as AsyncRecordBatchReaders<T>);
+        } else if (isArrowJSON(source) || ArrayBuffer.isView(source) || isIterable<ArrayBufferViewInput>(source) || isIteratorResult(source)) {
+            return readAllSync<T>(source) as IterableIterator<RecordBatchReaders<T>>;
+        }
+        return readAllAsync<T>(source) as AsyncIterableIterator<RecordBatchReaders<T> | AsyncRecordBatchReaders<T>>;
+    }
+}
+
+//
+// Since TS is a structural type system, we define the following subclass stubs
+// so that concrete types exist to associate with with the interfaces below.
+//
+// The implementation for each RecordBatchReader is hidden away in the set of
+// `RecordBatchReaderImpl` classes in the second half of this file. This allows
+// us to export a single RecordBatchReader class, and swap out the impl based
+// on the io primitives or underlying arrow (JSON, file, or stream) at runtime.
+//
+// Async/await makes our job a bit harder, since it forces everything to be
+// either fully sync or fully async. This is why the logic for the reader impls
+// has been duplicated into both sync and async variants. Since the RBR
+// delegates to its impl, an RBR with an AsyncRecordBatchFileReaderImpl for
+// example will return async/await-friendly Promises, but one with a (sync)
+// RecordBatchStreamReaderImpl will always return values. Nothing should be
+// different about their logic, aside from the async handling. This is also why
+// this code looks highly structured, as it should be nearly identical and easy
+// to follow.
+//
+
+/** @ignore */
+export class RecordBatchStreamReader<T extends TypeMap = any> extends RecordBatchReader<T> {
+    constructor(protected _impl: RecordBatchStreamReaderImpl<T>) { super(_impl); }
+    public readAll() { return [...this]; }
+    public [Symbol.iterator]() { return (this._impl as IterableIterator<RecordBatch<T>>)[Symbol.iterator](); }
+    public async *[Symbol.asyncIterator](): AsyncIterableIterator<RecordBatch<T>> { yield* this[Symbol.iterator](); }
+}
+/** @ignore */
+export class AsyncRecordBatchStreamReader<T extends TypeMap = any> extends RecordBatchReader<T> {
+    constructor(protected _impl: AsyncRecordBatchStreamReaderImpl<T>) { super(_impl); }
+    public async readAll() {
+        const batches = new Array<RecordBatch<T>>();
+        for await (const batch of this) { batches.push(batch); }
+        return batches;
+    }
+    public [Symbol.iterator](): IterableIterator<RecordBatch<T>> { throw new Error(`AsyncRecordBatchStreamReader is not Iterable`); }
+    public [Symbol.asyncIterator]() { return (this._impl as AsyncIterableIterator<RecordBatch<T>>)[Symbol.asyncIterator](); }
+}
+/** @ignore */
+export class RecordBatchFileReader<T extends TypeMap = any> extends RecordBatchStreamReader<T> {
+    constructor(protected _impl: RecordBatchFileReaderImpl<T>) { super(_impl); }
+}
+/** @ignore */
+export class AsyncRecordBatchFileReader<T extends TypeMap = any> extends AsyncRecordBatchStreamReader<T> {
+    constructor(protected _impl: AsyncRecordBatchFileReaderImpl<T>) { super(_impl); }
+}
+
+//
+// Now override the return types for each sync/async RecordBatchReader variant
+//
+
+/** @ignore */
+export interface RecordBatchStreamReader<T extends TypeMap = any> extends RecordBatchReader<T> {
+    open(options?: OpenOptions | undefined): this;
+    cancel(): void;
+    throw(value?: any): IteratorResult<any>;
+    return(value?: any): IteratorResult<any>;
+    next(value?: any): IteratorResult<RecordBatch<T>>;
+}
+
+/** @ignore */
+export interface AsyncRecordBatchStreamReader<T extends TypeMap = any> extends RecordBatchReader<T> {
+    open(options?: OpenOptions | undefined): Promise<this>;
+    cancel(): Promise<void>;
+    throw(value?: any): Promise<IteratorResult<any>>;
+    return(value?: any): Promise<IteratorResult<any>>;
+    next(value?: any): Promise<IteratorResult<RecordBatch<T>>>;
+}
+
+/** @ignore */
+export interface RecordBatchFileReader<T extends TypeMap = any> extends RecordBatchStreamReader<T> {
+    readRecordBatch(index: number): RecordBatch<T> | null;
+}
+
+/** @ignore */
+export interface AsyncRecordBatchFileReader<T extends TypeMap = any> extends AsyncRecordBatchStreamReader<T> {
+    readRecordBatch(index: number): Promise<RecordBatch<T> | null>;
+}
+
+/** @ignore */
+type RecordBatchReaderImpls<T extends TypeMap = any> =
+    RecordBatchJSONReaderImpl<T> |
+    RecordBatchFileReaderImpl<T> |
+    RecordBatchStreamReaderImpl<T> |
+    AsyncRecordBatchFileReaderImpl<T> |
+    AsyncRecordBatchStreamReaderImpl<T>;
+
+/** @ignore */
+interface RecordBatchReaderImpl<T extends TypeMap = any> {
+
+    closed: boolean;
+    schema: Schema<T>;
+    autoDestroy: boolean;
+    dictionaries: Map<number, Vector>;
+
+    isFile(): this is RecordBatchFileReaders<T>;
+    isStream(): this is RecordBatchStreamReaders<T>;
+    isSync(): this is RecordBatchReaders<T>;
+    isAsync(): this is AsyncRecordBatchReaders<T>;
+
+    reset(schema?: Schema<T> | null): this;
+}
+
+/** @ignore */
+interface RecordBatchStreamReaderImpl<T extends TypeMap = any> extends RecordBatchReaderImpl<T> {
+
+    open(options?: OpenOptions): this;
+    cancel(): void;
+
+    throw(value?: any): IteratorResult<any>;
+    return(value?: any): IteratorResult<any>;
+    next(value?: any): IteratorResult<RecordBatch<T>>;
+
+    [Symbol.iterator](): IterableIterator<RecordBatch<T>>;
+}
+
+/** @ignore */
+interface AsyncRecordBatchStreamReaderImpl<T extends TypeMap = any> extends RecordBatchReaderImpl<T> {
+
+    open(options?: OpenOptions): Promise<this>;
+    cancel(): Promise<void>;
+
+    throw(value?: any): Promise<IteratorResult<any>>;
+    return(value?: any): Promise<IteratorResult<any>>;
+    next(value?: any): Promise<IteratorResult<RecordBatch<T>>>;
+
+    [Symbol.asyncIterator](): AsyncIterableIterator<RecordBatch<T>>;
+}
+
+/** @ignore */
+interface RecordBatchFileReaderImpl<T extends TypeMap = any> extends RecordBatchStreamReaderImpl<T> {
+    readRecordBatch(index: number): RecordBatch<T> | null;
+}
+
+/** @ignore */
+interface AsyncRecordBatchFileReaderImpl<T extends TypeMap = any> extends AsyncRecordBatchStreamReaderImpl<T> {
+    readRecordBatch(index: number): Promise<RecordBatch<T> | null>;
+}
+
+/** @ignore */
+abstract class RecordBatchReaderImpl<T extends TypeMap = any> implements RecordBatchReaderImpl<T> {
+
+    declare public schema: Schema<T>;
+    public closed = false;
+    public autoDestroy = true;
+    public dictionaries: Map<number, Vector>;
+
+    protected _dictionaryIndex = 0;
+    protected _recordBatchIndex = 0;
+    public get numDictionaries() { return this._dictionaryIndex; }
+    public get numRecordBatches() { return this._recordBatchIndex; }
+
+    constructor(dictionaries = new Map<number, Vector>()) {
+        this.dictionaries = dictionaries;
+    }
+
+    public isSync(): this is RecordBatchReaders<T> { return false; }
+    public isAsync(): this is AsyncRecordBatchReaders<T> { return false; }
+    public isFile(): this is RecordBatchFileReaders<T> { return false; }
+    public isStream(): this is RecordBatchStreamReaders<T> { return false; }
+
+    public reset(schema?: Schema<T> | null) {
+        this._dictionaryIndex = 0;
+        this._recordBatchIndex = 0;
+        this.schema = <any>schema;
+        this.dictionaries = new Map();
+        return this;
+    }
+
+    protected _loadRecordBatch(header: metadata.RecordBatch, body: any) {
+        const children = this._loadVectors(header, body, this.schema.fields);
+        const data = makeData({ type: new Struct(this.schema.fields), length: header.length, children });
+        return new RecordBatch(this.schema, data);
+    }
+    protected _loadDictionaryBatch(header: metadata.DictionaryBatch, body: any) {
+        const { id, isDelta } = header;
+        const { dictionaries, schema } = this;
+        const dictionary = dictionaries.get(id);
+        if (isDelta || !dictionary) {
+            const type = schema.dictionaries.get(id)!;
+            const data = this._loadVectors(header.data, body, [type]);
+            return (dictionary && isDelta ? dictionary.concat(
+                new Vector(data)) :
+                new Vector(data)).memoize() as Vector;
+        }
+        return dictionary.memoize();
+    }
+    protected _loadVectors(header: metadata.RecordBatch, body: any, types: (Field | DataType)[]) {
+        return new VectorLoader(body, header.nodes, header.buffers, this.dictionaries).visitMany(types);
+    }
+}
+
+/** @ignore */
+class RecordBatchStreamReaderImpl<T extends TypeMap = any> extends RecordBatchReaderImpl<T> implements IterableIterator<RecordBatch<T>> {
+
+    protected _reader: MessageReader;
+    protected _handle: ByteStream | ArrowJSONLike;
+
+    constructor(source: ByteStream | ArrowJSONLike, dictionaries?: Map<number, Vector>) {
+        super(dictionaries);
+        this._reader = !isArrowJSON(source)
+            ? new MessageReader(this._handle = source)
+            : new JSONMessageReader(this._handle = source);
+    }
+
+    public isSync(): this is RecordBatchReaders<T> { return true; }
+    public isStream(): this is RecordBatchStreamReaders<T> { return true; }
+    public [Symbol.iterator](): IterableIterator<RecordBatch<T>> {
+        return this as IterableIterator<RecordBatch<T>>;
+    }
+    public cancel() {
+        if (!this.closed && (this.closed = true)) {
+            this.reset()._reader.return();
+            this._reader = <any>null;
+            this.dictionaries = <any>null;
+        }
+    }
+    public open(options?: OpenOptions) {
+        if (!this.closed) {
+            this.autoDestroy = shouldAutoDestroy(this, options);
+            if (!(this.schema || (this.schema = this._reader.readSchema()!))) {
+                this.cancel();
+            }
+        }
+        return this;
+    }
+    public throw(value?: any): IteratorResult<any> {
+        if (!this.closed && this.autoDestroy && (this.closed = true)) {
+            return this.reset()._reader.throw(value);
+        }
+        return ITERATOR_DONE;
+    }
+    public return(value?: any): IteratorResult<any> {
+        if (!this.closed && this.autoDestroy && (this.closed = true)) {
+            return this.reset()._reader.return(value);
+        }
+        return ITERATOR_DONE;
+    }
+    public next(): IteratorResult<RecordBatch<T>> {
+        if (this.closed) { return ITERATOR_DONE; }
+        let message: Message | null;
+        const { _reader: reader } = this;
+        while (message = this._readNextMessageAndValidate()) {
+            if (message.isSchema()) {
+                this.reset(message.header());
+            } else if (message.isRecordBatch()) {
+                this._recordBatchIndex++;
+                const header = message.header();
+                const buffer = reader.readMessageBody(message.bodyLength);
+                const recordBatch = this._loadRecordBatch(header, buffer);
+                return { done: false, value: recordBatch };
+            } else if (message.isDictionaryBatch()) {
+                this._dictionaryIndex++;
+                const header = message.header();
+                const buffer = reader.readMessageBody(message.bodyLength);
+                const vector = this._loadDictionaryBatch(header, buffer);
+                this.dictionaries.set(header.id, vector);
+            }
+        }
+        if (this.schema && this._recordBatchIndex === 0) {
+            this._recordBatchIndex++;
+            return { done: false, value: new _InternalEmptyPlaceholderRecordBatch<T>(this.schema) };
+        }
+        return this.return();
+    }
+    protected _readNextMessageAndValidate<T extends MessageHeader>(type?: T | null) {
+        return this._reader.readMessage<T>(type);
+    }
+}
+
+/** @ignore */
+class AsyncRecordBatchStreamReaderImpl<T extends TypeMap = any> extends RecordBatchReaderImpl<T> implements AsyncIterableIterator<RecordBatch<T>> {
+
+    protected _handle: AsyncByteStream;
+    protected _reader: AsyncMessageReader;
+
+    constructor(source: AsyncByteStream, dictionaries?: Map<number, Vector>) {
+        super(dictionaries);
+        this._reader = new AsyncMessageReader(this._handle = source);
+    }
+    public isAsync(): this is AsyncRecordBatchReaders<T> { return true; }
+    public isStream(): this is RecordBatchStreamReaders<T> { return true; }
+    public [Symbol.asyncIterator](): AsyncIterableIterator<RecordBatch<T>> {
+        return this as AsyncIterableIterator<RecordBatch<T>>;
+    }
+    public async cancel() {
+        if (!this.closed && (this.closed = true)) {
+            await this.reset()._reader.return();
+            this._reader = <any>null;
+            this.dictionaries = <any>null;
+        }
+    }
+    public async open(options?: OpenOptions) {
+        if (!this.closed) {
+            this.autoDestroy = shouldAutoDestroy(this, options);
+            if (!(this.schema || (this.schema = (await this._reader.readSchema())!))) {
+                await this.cancel();
+            }
+        }
+        return this;
+    }
+    public async throw(value?: any): Promise<IteratorResult<any>> {
+        if (!this.closed && this.autoDestroy && (this.closed = true)) {
+            return await this.reset()._reader.throw(value);
+        }
+        return ITERATOR_DONE;
+    }
+    public async return(value?: any): Promise<IteratorResult<any>> {
+        if (!this.closed && this.autoDestroy && (this.closed = true)) {
+            return await this.reset()._reader.return(value);
+        }
+        return ITERATOR_DONE;
+    }
+    public async next() {
+        if (this.closed) { return ITERATOR_DONE; }
+        let message: Message | null;
+        const { _reader: reader } = this;
+        while (message = await this._readNextMessageAndValidate()) {
+            if (message.isSchema()) {
+                await this.reset(message.header());
+            } else if (message.isRecordBatch()) {
+                this._recordBatchIndex++;
+                const header = message.header();
+                const buffer = await reader.readMessageBody(message.bodyLength);
+                const recordBatch = this._loadRecordBatch(header, buffer);
+                return { done: false, value: recordBatch };
+            } else if (message.isDictionaryBatch()) {
+                this._dictionaryIndex++;
+                const header = message.header();
+                const buffer = await reader.readMessageBody(message.bodyLength);
+                const vector = this._loadDictionaryBatch(header, buffer);
+                this.dictionaries.set(header.id, vector);
+            }
+        }
+        if (this.schema && this._recordBatchIndex === 0) {
+            this._recordBatchIndex++;
+            return { done: false, value: new _InternalEmptyPlaceholderRecordBatch<T>(this.schema) };
+        }
+        return await this.return();
+    }
+    protected async _readNextMessageAndValidate<T extends MessageHeader>(type?: T | null) {
+        return await this._reader.readMessage<T>(type);
+    }
+}
+
+/** @ignore */
+class RecordBatchFileReaderImpl<T extends TypeMap = any> extends RecordBatchStreamReaderImpl<T> {
+
+    protected _footer?: Footer;
+    declare protected _handle: RandomAccessFile;
+    public get footer() { return this._footer!; }
+    public get numDictionaries() { return this._footer ? this._footer.numDictionaries : 0; }
+    public get numRecordBatches() { return this._footer ? this._footer.numRecordBatches : 0; }
+
+    constructor(source: RandomAccessFile | ArrayBufferViewInput, dictionaries?: Map<number, Vector>) {
+        super(source instanceof RandomAccessFile ? source : new RandomAccessFile(source), dictionaries);
+    }
+    public isSync(): this is RecordBatchReaders<T> { return true; }
+    public isFile(): this is RecordBatchFileReaders<T> { return true; }
+    public open(options?: OpenOptions) {
+        if (!this.closed && !this._footer) {
+            this.schema = (this._footer = this._readFooter()).schema;
+            for (const block of this._footer.dictionaryBatches()) {
+                block && this._readDictionaryBatch(this._dictionaryIndex++);
+            }
+        }
+        return super.open(options);
+    }
+    public readRecordBatch(index: number) {
+        if (this.closed) { return null; }
+        if (!this._footer) { this.open(); }
+        const block = this._footer?.getRecordBatch(index);
+        if (block && this._handle.seek(block.offset)) {
+            const message = this._reader.readMessage(MessageHeader.RecordBatch);
+            if (message?.isRecordBatch()) {
+                const header = message.header();
+                const buffer = this._reader.readMessageBody(message.bodyLength);
+                const recordBatch = this._loadRecordBatch(header, buffer);
+                return recordBatch;
+            }
+        }
+        return null;
+    }
+    protected _readDictionaryBatch(index: number) {
+        const block = this._footer?.getDictionaryBatch(index);
+        if (block && this._handle.seek(block.offset)) {
+            const message = this._reader.readMessage(MessageHeader.DictionaryBatch);
+            if (message?.isDictionaryBatch()) {
+                const header = message.header();
+                const buffer = this._reader.readMessageBody(message.bodyLength);
+                const vector = this._loadDictionaryBatch(header, buffer);
+                this.dictionaries.set(header.id, vector);
+            }
+        }
+    }
+    protected _readFooter() {
+        const { _handle } = this;
+        const offset = _handle.size - magicAndPadding;
+        const length = _handle.readInt32(offset);
+        const buffer = _handle.readAt(offset - length, length);
+        return Footer.decode(buffer);
+    }
+    protected _readNextMessageAndValidate<T extends MessageHeader>(type?: T | null): Message<T> | null {
+        if (!this._footer) { this.open(); }
+        if (this._footer && this._recordBatchIndex < this.numRecordBatches) {
+            const block = this._footer?.getRecordBatch(this._recordBatchIndex);
+            if (block && this._handle.seek(block.offset)) {
+                return this._reader.readMessage(type);
+            }
+        }
+        return null;
+    }
+}
+
+/** @ignore */
+class AsyncRecordBatchFileReaderImpl<T extends TypeMap = any> extends AsyncRecordBatchStreamReaderImpl<T>
+    implements AsyncRecordBatchFileReaderImpl<T> {
+
+    protected _footer?: Footer;
+    declare protected _handle: AsyncRandomAccessFile;
+    public get footer() { return this._footer!; }
+    public get numDictionaries() { return this._footer ? this._footer.numDictionaries : 0; }
+    public get numRecordBatches() { return this._footer ? this._footer.numRecordBatches : 0; }
+
+    constructor(source: FileHandle, byteLength?: number, dictionaries?: Map<number, Vector>);
+    constructor(source: FileHandle | AsyncRandomAccessFile, dictionaries?: Map<number, Vector>);
+    constructor(source: FileHandle | AsyncRandomAccessFile, ...rest: any[]) {
+        const byteLength = typeof rest[0] !== 'number' ? <number>rest.shift() : undefined;
+        const dictionaries = rest[0] instanceof Map ? <Map<number, Vector>>rest.shift() : undefined;
+        super(source instanceof AsyncRandomAccessFile ? source : new AsyncRandomAccessFile(source, byteLength), dictionaries);
+    }
+    public isFile(): this is RecordBatchFileReaders<T> { return true; }
+    public isAsync(): this is AsyncRecordBatchReaders<T> { return true; }
+    public async open(options?: OpenOptions) {
+        if (!this.closed && !this._footer) {
+            this.schema = (this._footer = await this._readFooter()).schema;
+            for (const block of this._footer.dictionaryBatches()) {
+                block && await this._readDictionaryBatch(this._dictionaryIndex++);
+            }
+        }
+        return await super.open(options);
+    }
+    public async readRecordBatch(index: number) {
+        if (this.closed) { return null; }
+        if (!this._footer) { await this.open(); }
+        const block = this._footer?.getRecordBatch(index);
+        if (block && (await this._handle.seek(block.offset))) {
+            const message = await this._reader.readMessage(MessageHeader.RecordBatch);
+            if (message?.isRecordBatch()) {
+                const header = message.header();
+                const buffer = await this._reader.readMessageBody(message.bodyLength);
+                const recordBatch = this._loadRecordBatch(header, buffer);
+                return recordBatch;
+            }
+        }
+        return null;
+    }
+    protected async _readDictionaryBatch(index: number) {
+        const block = this._footer?.getDictionaryBatch(index);
+        if (block && (await this._handle.seek(block.offset))) {
+            const message = await this._reader.readMessage(MessageHeader.DictionaryBatch);
+            if (message?.isDictionaryBatch()) {
+                const header = message.header();
+                const buffer = await this._reader.readMessageBody(message.bodyLength);
+                const vector = this._loadDictionaryBatch(header, buffer);
+                this.dictionaries.set(header.id, vector);
+            }
+        }
+    }
+    protected async _readFooter() {
+        const { _handle } = this;
+        _handle._pending && await _handle._pending;
+        const offset = _handle.size - magicAndPadding;
+        const length = await _handle.readInt32(offset);
+        const buffer = await _handle.readAt(offset - length, length);
+        return Footer.decode(buffer);
+    }
+    protected async _readNextMessageAndValidate<T extends MessageHeader>(type?: T | null): Promise<Message<T> | null> {
+        if (!this._footer) { await this.open(); }
+        if (this._footer && this._recordBatchIndex < this.numRecordBatches) {
+            const block = this._footer.getRecordBatch(this._recordBatchIndex);
+            if (block && await this._handle.seek(block.offset)) {
+                return await this._reader.readMessage(type);
+            }
+        }
+        return null;
+    }
+}
+
+/** @ignore */
+class RecordBatchJSONReaderImpl<T extends TypeMap = any> extends RecordBatchStreamReaderImpl<T> {
+    constructor(source: ArrowJSONLike, dictionaries?: Map<number, Vector>) {
+        super(source, dictionaries);
+    }
+    protected _loadVectors(header: metadata.RecordBatch, body: any, types: (Field | DataType)[]) {
+        return new JSONVectorLoader(body, header.nodes, header.buffers, this.dictionaries).visitMany(types);
+    }
+}
+
+//
+// Define some helper functions and static implementations down here. There's
+// a bit of branching in the static methods that can lead to the same routines
+// being executed, so we've broken those out here for readability.
+//
+
+/** @ignore */
+function shouldAutoDestroy(self: { autoDestroy: boolean }, options?: OpenOptions) {
+    return options && (typeof options['autoDestroy'] === 'boolean') ? options['autoDestroy'] : self['autoDestroy'];
+}
+
+/** @ignore */
+function* readAllSync<T extends TypeMap = any>(source: RecordBatchReaders<T> | FromArg0 | FromArg2) {
+    const reader = RecordBatchReader.from<T>(<any>source) as RecordBatchReaders<T>;
+    try {
+        if (!reader.open({ autoDestroy: false }).closed) {
+            do { yield reader; } while (!(reader.reset().open()).closed);
+        }
+    } finally { reader.cancel(); }
+}
+
+/** @ignore */
+async function* readAllAsync<T extends TypeMap = any>(source: AsyncRecordBatchReaders<T> | FromArg1 | FromArg3 | FromArg4 | FromArg5) {
+    const reader = await RecordBatchReader.from<T>(<any>source) as RecordBatchReader<T>;
+    try {
+        if (!(await reader.open({ autoDestroy: false })).closed) {
+            do { yield reader; } while (!(await reader.reset().open()).closed);
+        }
+    } finally { await reader.cancel(); }
+}
+
+/** @ignore */
+function fromArrowJSON<T extends TypeMap>(source: ArrowJSONLike) {
+    return new RecordBatchStreamReader(new RecordBatchJSONReaderImpl<T>(source));
+}
+
+/** @ignore */
+function fromByteStream<T extends TypeMap>(source: ByteStream) {
+    const bytes = source.peek((magicLength + 7) & ~7);
+    return bytes && bytes.byteLength >= 4 ? !checkForMagicArrowString(bytes)
+        ? new RecordBatchStreamReader(new RecordBatchStreamReaderImpl<T>(source))
+        : new RecordBatchFileReader(new RecordBatchFileReaderImpl<T>(source.read()))
+        : new RecordBatchStreamReader(new RecordBatchStreamReaderImpl<T>(function* (): any { }()));
+}
+
+/** @ignore */
+async function fromAsyncByteStream<T extends TypeMap>(source: AsyncByteStream) {
+    const bytes = await source.peek((magicLength + 7) & ~7);
+    return bytes && bytes.byteLength >= 4 ? !checkForMagicArrowString(bytes)
+        ? new AsyncRecordBatchStreamReader(new AsyncRecordBatchStreamReaderImpl<T>(source))
+        : new RecordBatchFileReader(new RecordBatchFileReaderImpl<T>(await source.read()))
+        : new AsyncRecordBatchStreamReader(new AsyncRecordBatchStreamReaderImpl<T>(async function* (): any { }()));
+}
+
+/** @ignore */
+async function fromFileHandle<T extends TypeMap>(source: FileHandle) {
+    const { size } = await source.stat();
+    const file = new AsyncRandomAccessFile(source, size);
+    if (size >= magicX2AndPadding && checkForMagicArrowString(await file.readAt(0, (magicLength + 7) & ~7))) {
+        return new AsyncRecordBatchFileReader(new AsyncRecordBatchFileReaderImpl<T>(file));
+    }
+    return new AsyncRecordBatchStreamReader(new AsyncRecordBatchStreamReaderImpl<T>(file));
+}
diff --git a/igv_component/node_modules/apache-arrow/src/ipc/serialization.ts b/igv_component/node_modules/apache-arrow/src/ipc/serialization.ts
new file mode 100644
index 0000000000000000000000000000000000000000..aee46762131618365fe33938cebaf94d677c0972
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/ipc/serialization.ts
@@ -0,0 +1,65 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Table } from '../table.js';
+import { TypeMap } from '../type.js';
+import { isPromise } from '../util/compat.js';
+import {
+    FromArg0, FromArg1, FromArg2, FromArg3, FromArg4, FromArg5,
+    RecordBatchReader,
+    RecordBatchFileReader, RecordBatchStreamReader,
+    AsyncRecordBatchFileReader, AsyncRecordBatchStreamReader
+} from './reader.js';
+import { RecordBatchFileWriter, RecordBatchStreamWriter } from './writer.js';
+
+type RecordBatchReaders<T extends TypeMap = any> = RecordBatchFileReader<T> | RecordBatchStreamReader<T>;
+type AsyncRecordBatchReaders<T extends TypeMap = any> = AsyncRecordBatchFileReader<T> | AsyncRecordBatchStreamReader<T>;
+
+/**
+ * Deserialize the IPC format into a {@link Table}. This function is a
+ * convenience wrapper for {@link RecordBatchReader}. Opposite of {@link tableToIPC}.
+ */
+export function tableFromIPC<T extends TypeMap = any>(source: FromArg0 | FromArg2): Table<T>;
+export function tableFromIPC<T extends TypeMap = any>(source: FromArg1): Promise<Table<T>>;
+export function tableFromIPC<T extends TypeMap = any>(source: FromArg3 | FromArg4 | FromArg5): Promise<Table<T>>;
+export function tableFromIPC<T extends TypeMap = any>(source: RecordBatchReaders<T>): Table<T>;
+export function tableFromIPC<T extends TypeMap = any>(source: AsyncRecordBatchReaders<T>): Promise<Table<T>>;
+export function tableFromIPC<T extends TypeMap = any>(source: RecordBatchReader<T>): Table<T> | Promise<Table<T>>;
+export function tableFromIPC<T extends TypeMap = any>(input: any): Table<T> | Promise<Table<T>> {
+    const reader = RecordBatchReader.from<T>(input) as RecordBatchReader<T> | Promise<RecordBatchReader<T>>;
+    if (isPromise<RecordBatchReader<T>>(reader)) {
+        return reader.then((reader) => tableFromIPC(reader)) as Promise<Table<T>>;
+    }
+    if (reader.isAsync()) {
+        return (reader as AsyncRecordBatchReaders<T>).readAll().then((xs) => new Table(xs));
+    }
+    return new Table((reader as RecordBatchReaders<T>).readAll());
+}
+
+/**
+ * Serialize a {@link Table} to the IPC format. This function is a convenience
+ * wrapper for {@link RecordBatchStreamWriter} and {@link RecordBatchFileWriter}.
+ * Opposite of {@link tableFromIPC}.
+ *
+ * @param table The Table to serialize.
+ * @param type Whether to serialize the Table as a file or a stream.
+ */
+export function tableToIPC<T extends TypeMap = any>(table: Table, type: 'file' | 'stream' = 'stream'): Uint8Array {
+    return (type === 'stream' ? RecordBatchStreamWriter : RecordBatchFileWriter)
+        .writeAll<T>(table)
+        .toUint8Array(true);
+}
diff --git a/igv_component/node_modules/apache-arrow/src/ipc/writer.ts b/igv_component/node_modules/apache-arrow/src/ipc/writer.ts
new file mode 100644
index 0000000000000000000000000000000000000000..5f5cc37562bb0d94e777d3d166e39b01d62dfcd5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/ipc/writer.ts
@@ -0,0 +1,489 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Data } from '../data.js';
+import { Table } from '../table.js';
+import { MAGIC } from './message.js';
+import { Vector } from '../vector.js';
+import { DataType, TypeMap } from '../type.js';
+import { Schema, Field } from '../schema.js';
+import { Message } from './metadata/message.js';
+import * as metadata from './metadata/message.js';
+import { FileBlock, Footer } from './metadata/file.js';
+import { MessageHeader, MetadataVersion } from '../enum.js';
+import { compareSchemas } from '../visitor/typecomparator.js';
+import { WritableSink, AsyncByteQueue } from '../io/stream.js';
+import { VectorAssembler } from '../visitor/vectorassembler.js';
+import { JSONTypeAssembler } from '../visitor/jsontypeassembler.js';
+import { JSONVectorAssembler } from '../visitor/jsonvectorassembler.js';
+import { ArrayBufferViewInput, toUint8Array } from '../util/buffer.js';
+import { RecordBatch, _InternalEmptyPlaceholderRecordBatch } from '../recordbatch.js';
+import { Writable, ReadableInterop, ReadableDOMStreamOptions } from '../io/interfaces.js';
+import { isPromise, isAsyncIterable, isWritableDOMStream, isWritableNodeStream, isIterable, isObject } from '../util/compat.js';
+
+export interface RecordBatchStreamWriterOptions {
+    /**
+     *
+     */
+    autoDestroy?: boolean;
+    /**
+     * A flag indicating whether the RecordBatchWriter should construct pre-0.15.0
+     * encapsulated IPC Messages, which reserves  4 bytes for the Message metadata
+     * length instead of 8.
+     * @see https://issues.apache.org/jira/browse/ARROW-6313
+     */
+    writeLegacyIpcFormat?: boolean;
+}
+
+export class RecordBatchWriter<T extends TypeMap = any> extends ReadableInterop<Uint8Array> implements Writable<RecordBatch<T>> {
+
+    /** @nocollapse */
+    // @ts-ignore
+    public static throughNode(options?: import('stream').DuplexOptions & { autoDestroy: boolean }): import('stream').Duplex {
+        throw new Error(`"throughNode" not available in this environment`);
+    }
+    /** @nocollapse */
+    public static throughDOM<T extends TypeMap>(
+        // @ts-ignore
+        writableStrategy?: QueuingStrategy<RecordBatch<T>> & { autoDestroy: boolean },
+        // @ts-ignore
+        readableStrategy?: { highWaterMark?: number; size?: any }
+    ): { writable: WritableStream<Table<T> | RecordBatch<T>>; readable: ReadableStream<Uint8Array> } {
+        throw new Error(`"throughDOM" not available in this environment`);
+    }
+
+    constructor(options?: RecordBatchStreamWriterOptions) {
+        super();
+        isObject(options) || (options = { autoDestroy: true, writeLegacyIpcFormat: false });
+        this._autoDestroy = (typeof options.autoDestroy === 'boolean') ? options.autoDestroy : true;
+        this._writeLegacyIpcFormat = (typeof options.writeLegacyIpcFormat === 'boolean') ? options.writeLegacyIpcFormat : false;
+    }
+
+    protected _position = 0;
+    protected _started = false;
+    protected _autoDestroy: boolean;
+    protected _writeLegacyIpcFormat: boolean;
+    // @ts-ignore
+    protected _sink = new AsyncByteQueue();
+    protected _schema: Schema | null = null;
+    protected _dictionaryBlocks: FileBlock[] = [];
+    protected _recordBatchBlocks: FileBlock[] = [];
+    protected _dictionaryDeltaOffsets = new Map<number, number>();
+
+    public toString(sync: true): string;
+    public toString(sync?: false): Promise<string>;
+    public toString(sync: any = false) {
+        return this._sink.toString(sync) as Promise<string> | string;
+    }
+    public toUint8Array(sync: true): Uint8Array;
+    public toUint8Array(sync?: false): Promise<Uint8Array>;
+    public toUint8Array(sync: any = false) {
+        return this._sink.toUint8Array(sync) as Promise<Uint8Array> | Uint8Array;
+    }
+
+    public writeAll(input: Table<T> | Iterable<RecordBatch<T>>): this;
+    public writeAll(input: AsyncIterable<RecordBatch<T>>): Promise<this>;
+    public writeAll(input: PromiseLike<AsyncIterable<RecordBatch<T>>>): Promise<this>;
+    public writeAll(input: PromiseLike<Table<T> | Iterable<RecordBatch<T>>>): Promise<this>;
+    public writeAll(input: PromiseLike<any> | Table<T> | Iterable<RecordBatch<T>> | AsyncIterable<RecordBatch<T>>) {
+        if (isPromise<any>(input)) {
+            return input.then((x) => this.writeAll(x));
+        } else if (isAsyncIterable<RecordBatch<T>>(input)) {
+            return writeAllAsync(this, input);
+        }
+        return writeAll(this, <any>input);
+    }
+
+    public get closed() { return this._sink.closed; }
+    public [Symbol.asyncIterator]() { return this._sink[Symbol.asyncIterator](); }
+    public toDOMStream(options?: ReadableDOMStreamOptions) { return this._sink.toDOMStream(options); }
+    public toNodeStream(options?: import('stream').ReadableOptions) { return this._sink.toNodeStream(options); }
+
+    public close() {
+        return this.reset()._sink.close();
+    }
+    public abort(reason?: any) {
+        return this.reset()._sink.abort(reason);
+    }
+    public finish() {
+        this._autoDestroy ? this.close() : this.reset(this._sink, this._schema);
+        return this;
+    }
+    public reset(sink: WritableSink<ArrayBufferViewInput> = this._sink, schema: Schema<T> | null = null) {
+        if ((sink === this._sink) || (sink instanceof AsyncByteQueue)) {
+            this._sink = sink as AsyncByteQueue;
+        } else {
+            this._sink = new AsyncByteQueue();
+            if (sink && isWritableDOMStream(sink)) {
+                this.toDOMStream({ type: 'bytes' }).pipeTo(sink);
+            } else if (sink && isWritableNodeStream(sink)) {
+                this.toNodeStream({ objectMode: false }).pipe(sink);
+            }
+        }
+
+        if (this._started && this._schema) {
+            this._writeFooter(this._schema);
+        }
+
+        this._started = false;
+        this._dictionaryBlocks = [];
+        this._recordBatchBlocks = [];
+        this._dictionaryDeltaOffsets = new Map();
+
+        if (!schema || !(compareSchemas(schema, this._schema))) {
+            if (schema == null) {
+                this._position = 0;
+                this._schema = null;
+            } else {
+                this._started = true;
+                this._schema = schema;
+                this._writeSchema(schema);
+            }
+        }
+
+        return this;
+    }
+
+    public write(payload?: Table<T> | RecordBatch<T> | Iterable<RecordBatch<T>> | null) {
+        let schema: Schema<T> | null = null;
+
+        if (!this._sink) {
+            throw new Error(`RecordBatchWriter is closed`);
+        } else if (payload == null) {
+            return this.finish() && undefined;
+        } else if (payload instanceof Table && !(schema = payload.schema)) {
+            return this.finish() && undefined;
+        } else if (payload instanceof RecordBatch && !(schema = payload.schema)) {
+            return this.finish() && undefined;
+        }
+
+        if (schema && !compareSchemas(schema, this._schema)) {
+            if (this._started && this._autoDestroy) {
+                return this.close();
+            }
+            this.reset(this._sink, schema);
+        }
+
+        if (payload instanceof RecordBatch) {
+            if (!(payload instanceof _InternalEmptyPlaceholderRecordBatch)) {
+                this._writeRecordBatch(payload);
+            }
+        } else if (payload instanceof Table) {
+            this.writeAll(payload.batches);
+        } else if (isIterable(payload)) {
+            this.writeAll(payload);
+        }
+    }
+
+    protected _writeMessage<T extends MessageHeader>(message: Message<T>, alignment = 8) {
+        const a = alignment - 1;
+        const buffer = Message.encode(message);
+        const flatbufferSize = buffer.byteLength;
+        const prefixSize = !this._writeLegacyIpcFormat ? 8 : 4;
+        const alignedSize = (flatbufferSize + prefixSize + a) & ~a;
+        const nPaddingBytes = alignedSize - flatbufferSize - prefixSize;
+
+        if (message.headerType === MessageHeader.RecordBatch) {
+            this._recordBatchBlocks.push(new FileBlock(alignedSize, message.bodyLength, this._position));
+        } else if (message.headerType === MessageHeader.DictionaryBatch) {
+            this._dictionaryBlocks.push(new FileBlock(alignedSize, message.bodyLength, this._position));
+        }
+
+        // If not in legacy pre-0.15.0 mode, write the stream continuation indicator
+        if (!this._writeLegacyIpcFormat) {
+            this._write(Int32Array.of(-1));
+        }
+        // Write the flatbuffer size prefix including padding
+        this._write(Int32Array.of(alignedSize - prefixSize));
+        // Write the flatbuffer
+        if (flatbufferSize > 0) { this._write(buffer); }
+        // Write any padding
+        return this._writePadding(nPaddingBytes);
+    }
+
+    protected _write(chunk: ArrayBufferViewInput) {
+        if (this._started) {
+            const buffer = toUint8Array(chunk);
+            if (buffer && buffer.byteLength > 0) {
+                this._sink.write(buffer);
+                this._position += buffer.byteLength;
+            }
+        }
+        return this;
+    }
+
+    protected _writeSchema(schema: Schema<T>) {
+        return this._writeMessage(Message.from(schema));
+    }
+
+    // @ts-ignore
+    protected _writeFooter(schema: Schema<T>) {
+        // eos bytes
+        return this._writeLegacyIpcFormat
+            ? this._write(Int32Array.of(0))
+            : this._write(Int32Array.of(-1, 0));
+    }
+
+    protected _writeMagic() {
+        return this._write(MAGIC);
+    }
+
+    protected _writePadding(nBytes: number) {
+        return nBytes > 0 ? this._write(new Uint8Array(nBytes)) : this;
+    }
+
+    protected _writeRecordBatch(batch: RecordBatch<T>) {
+        const { byteLength, nodes, bufferRegions, buffers } = VectorAssembler.assemble(batch);
+        const recordBatch = new metadata.RecordBatch(batch.numRows, nodes, bufferRegions);
+        const message = Message.from(recordBatch, byteLength);
+        return this
+            ._writeDictionaries(batch)
+            ._writeMessage(message)
+            ._writeBodyBuffers(buffers);
+    }
+
+    protected _writeDictionaryBatch(dictionary: Data, id: number, isDelta = false) {
+        this._dictionaryDeltaOffsets.set(id, dictionary.length + (this._dictionaryDeltaOffsets.get(id) || 0));
+        const { byteLength, nodes, bufferRegions, buffers } = VectorAssembler.assemble(new Vector([dictionary]));
+        const recordBatch = new metadata.RecordBatch(dictionary.length, nodes, bufferRegions);
+        const dictionaryBatch = new metadata.DictionaryBatch(recordBatch, id, isDelta);
+        const message = Message.from(dictionaryBatch, byteLength);
+        return this
+            ._writeMessage(message)
+            ._writeBodyBuffers(buffers);
+    }
+
+    protected _writeBodyBuffers(buffers: ArrayBufferView[]) {
+        let buffer: ArrayBufferView;
+        let size: number, padding: number;
+        for (let i = -1, n = buffers.length; ++i < n;) {
+            if ((buffer = buffers[i]) && (size = buffer.byteLength) > 0) {
+                this._write(buffer);
+                if ((padding = ((size + 7) & ~7) - size) > 0) {
+                    this._writePadding(padding);
+                }
+            }
+        }
+        return this;
+    }
+
+    protected _writeDictionaries(batch: RecordBatch<T>) {
+        for (let [id, dictionary] of batch.dictionaries) {
+            let offset = this._dictionaryDeltaOffsets.get(id) || 0;
+            if (offset === 0 || (dictionary = dictionary?.slice(offset)).length > 0) {
+                for (const data of dictionary.data) {
+                    this._writeDictionaryBatch(data, id, offset > 0);
+                    offset += data.length;
+                }
+            }
+        }
+        return this;
+    }
+}
+
+/** @ignore */
+export class RecordBatchStreamWriter<T extends TypeMap = any> extends RecordBatchWriter<T> {
+    public static writeAll<T extends TypeMap = any>(input: Table<T> | Iterable<RecordBatch<T>>, options?: RecordBatchStreamWriterOptions): RecordBatchStreamWriter<T>;
+    public static writeAll<T extends TypeMap = any>(input: AsyncIterable<RecordBatch<T>>, options?: RecordBatchStreamWriterOptions): Promise<RecordBatchStreamWriter<T>>;
+    public static writeAll<T extends TypeMap = any>(input: PromiseLike<AsyncIterable<RecordBatch<T>>>, options?: RecordBatchStreamWriterOptions): Promise<RecordBatchStreamWriter<T>>;
+    public static writeAll<T extends TypeMap = any>(input: PromiseLike<Table<T> | Iterable<RecordBatch<T>>>, options?: RecordBatchStreamWriterOptions): Promise<RecordBatchStreamWriter<T>>;
+    /** @nocollapse */
+    public static writeAll<T extends TypeMap = any>(input: any, options?: RecordBatchStreamWriterOptions) {
+        const writer = new RecordBatchStreamWriter<T>(options);
+        if (isPromise<any>(input)) {
+            return input.then((x) => writer.writeAll(x));
+        } else if (isAsyncIterable<RecordBatch<T>>(input)) {
+            return writeAllAsync(writer, input);
+        }
+        return writeAll(writer, input);
+    }
+}
+
+/** @ignore */
+export class RecordBatchFileWriter<T extends TypeMap = any> extends RecordBatchWriter<T> {
+    public static writeAll<T extends TypeMap = any>(input: Table<T> | Iterable<RecordBatch<T>>): RecordBatchFileWriter<T>;
+    public static writeAll<T extends TypeMap = any>(input: AsyncIterable<RecordBatch<T>>): Promise<RecordBatchFileWriter<T>>;
+    public static writeAll<T extends TypeMap = any>(input: PromiseLike<AsyncIterable<RecordBatch<T>>>): Promise<RecordBatchFileWriter<T>>;
+    public static writeAll<T extends TypeMap = any>(input: PromiseLike<Table<T> | Iterable<RecordBatch<T>>>): Promise<RecordBatchFileWriter<T>>;
+    /** @nocollapse */
+    public static writeAll<T extends TypeMap = any>(input: any) {
+        const writer = new RecordBatchFileWriter<T>();
+        if (isPromise<any>(input)) {
+            return input.then((x) => writer.writeAll(x));
+        } else if (isAsyncIterable<RecordBatch<T>>(input)) {
+            return writeAllAsync(writer, input);
+        }
+        return writeAll(writer, input);
+    }
+
+    constructor() {
+        super();
+        this._autoDestroy = true;
+    }
+
+    // @ts-ignore
+    protected _writeSchema(schema: Schema<T>) {
+        return this._writeMagic()._writePadding(2);
+    }
+
+    protected _writeFooter(schema: Schema<T>) {
+        const buffer = Footer.encode(new Footer(
+            schema, MetadataVersion.V4,
+            this._recordBatchBlocks, this._dictionaryBlocks
+        ));
+        return super
+            ._writeFooter(schema) // EOS bytes for sequential readers
+            ._write(buffer) // Write the flatbuffer
+            ._write(Int32Array.of(buffer.byteLength)) // then the footer size suffix
+            ._writeMagic(); // then the magic suffix
+    }
+}
+
+/** @ignore */
+export class RecordBatchJSONWriter<T extends TypeMap = any> extends RecordBatchWriter<T> {
+
+    public static writeAll<T extends TypeMap = any>(this: typeof RecordBatchWriter, input: Table<T> | Iterable<RecordBatch<T>>): RecordBatchJSONWriter<T>;
+    // @ts-ignore
+    public static writeAll<T extends TypeMap = any>(this: typeof RecordBatchWriter, input: AsyncIterable<RecordBatch<T>>): Promise<RecordBatchJSONWriter<T>>;
+    public static writeAll<T extends TypeMap = any>(this: typeof RecordBatchWriter, input: PromiseLike<AsyncIterable<RecordBatch<T>>>): Promise<RecordBatchJSONWriter<T>>;
+    public static writeAll<T extends TypeMap = any>(this: typeof RecordBatchWriter, input: PromiseLike<Table<T> | Iterable<RecordBatch<T>>>): Promise<RecordBatchJSONWriter<T>>;
+    /** @nocollapse */
+    public static writeAll<T extends TypeMap = any>(this: typeof RecordBatchWriter, input: any) {
+        return new RecordBatchJSONWriter<T>().writeAll(input as any);
+    }
+
+    private _recordBatches: RecordBatch[];
+    private _dictionaries: RecordBatch[];
+
+    constructor() {
+        super();
+        this._autoDestroy = true;
+        this._recordBatches = [];
+        this._dictionaries = [];
+    }
+
+    protected _writeMessage() { return this; }
+    // @ts-ignore
+    protected _writeFooter(schema: Schema<T>) { return this; }
+    protected _writeSchema(schema: Schema<T>) {
+        return this._write(`{\n  "schema": ${JSON.stringify({ fields: schema.fields.map(field => fieldToJSON(field)) }, null, 2)}`);
+    }
+    protected _writeDictionaries(batch: RecordBatch<T>) {
+        if (batch.dictionaries.size > 0) {
+            this._dictionaries.push(batch);
+        }
+        return this;
+    }
+    protected _writeDictionaryBatch(dictionary: Data, id: number, isDelta = false) {
+        this._dictionaryDeltaOffsets.set(id, dictionary.length + (this._dictionaryDeltaOffsets.get(id) || 0));
+        this._write(this._dictionaryBlocks.length === 0 ? `    ` : `,\n    `);
+        this._write(`${dictionaryBatchToJSON(dictionary, id, isDelta)}`);
+        this._dictionaryBlocks.push(new FileBlock(0, 0, 0));
+        return this;
+    }
+    protected _writeRecordBatch(batch: RecordBatch<T>) {
+        this._writeDictionaries(batch);
+        this._recordBatches.push(batch);
+        return this;
+    }
+    public close() {
+
+        if (this._dictionaries.length > 0) {
+            this._write(`,\n  "dictionaries": [\n`);
+            for (const batch of this._dictionaries) {
+                super._writeDictionaries(batch);
+            }
+            this._write(`\n  ]`);
+        }
+
+        if (this._recordBatches.length > 0) {
+            for (let i = -1, n = this._recordBatches.length; ++i < n;) {
+                this._write(i === 0 ? `,\n  "batches": [\n    ` : `,\n    `);
+                this._write(`${recordBatchToJSON(this._recordBatches[i])}`);
+                this._recordBatchBlocks.push(new FileBlock(0, 0, 0));
+            }
+            this._write(`\n  ]`);
+        }
+
+        if (this._schema) {
+            this._write(`\n}`);
+        }
+
+        this._dictionaries = [];
+        this._recordBatches = [];
+
+        return super.close();
+    }
+}
+
+/** @ignore */
+function writeAll<T extends TypeMap = any>(writer: RecordBatchWriter<T>, input: Table<T> | Iterable<RecordBatch<T>>) {
+    let chunks = input as Iterable<RecordBatch<T>>;
+    if (input instanceof Table) {
+        chunks = input.batches;
+        writer.reset(undefined, input.schema);
+    }
+    for (const batch of chunks) {
+        writer.write(batch);
+    }
+    return writer.finish();
+}
+
+/** @ignore */
+async function writeAllAsync<T extends TypeMap = any>(writer: RecordBatchWriter<T>, batches: AsyncIterable<RecordBatch<T>>) {
+    for await (const batch of batches) {
+        writer.write(batch);
+    }
+    return writer.finish();
+}
+
+/** @ignore */
+function fieldToJSON({ name, type, nullable }: Field): Record<string, unknown> {
+    const assembler = new JSONTypeAssembler();
+    return {
+        'name': name, 'nullable': nullable,
+        'type': assembler.visit(type),
+        'children': (type.children || []).map((field: any) => fieldToJSON(field)),
+        'dictionary': !DataType.isDictionary(type) ? undefined : {
+            'id': type.id,
+            'isOrdered': type.isOrdered,
+            'indexType': assembler.visit(type.indices)
+        }
+    };
+}
+
+/** @ignore */
+function dictionaryBatchToJSON(dictionary: Data, id: number, isDelta = false) {
+    const [columns] = JSONVectorAssembler.assemble(new RecordBatch({ [id]: dictionary }));
+    return JSON.stringify({
+        'id': id,
+        'isDelta': isDelta,
+        'data': {
+            'count': dictionary.length,
+            'columns': columns
+        }
+    }, null, 2);
+}
+
+/** @ignore */
+function recordBatchToJSON(records: RecordBatch) {
+    const [columns] = JSONVectorAssembler.assemble(records);
+    return JSON.stringify({
+        'count': records.numRows,
+        'columns': columns
+    }, null, 2);
+}
diff --git a/igv_component/node_modules/apache-arrow/src/recordbatch.ts b/igv_component/node_modules/apache-arrow/src/recordbatch.ts
new file mode 100644
index 0000000000000000000000000000000000000000..eed9de66e8ec20d77ac1c8ea46d84c5c598c0697
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/recordbatch.ts
@@ -0,0 +1,353 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Data, makeData } from './data.js';
+import { Table } from './table.js';
+import { Vector } from './vector.js';
+import { Schema, Field } from './schema.js';
+import { DataType, Struct, Null, TypeMap } from './type.js';
+
+import { instance as getVisitor } from './visitor/get.js';
+import { instance as setVisitor } from './visitor/set.js';
+import { instance as indexOfVisitor } from './visitor/indexof.js';
+import { instance as iteratorVisitor } from './visitor/iterator.js';
+import { instance as byteLengthVisitor } from './visitor/bytelength.js';
+
+/** @ignore */
+export interface RecordBatch<T extends TypeMap = any> {
+    ///
+    // Virtual properties for the TypeScript compiler.
+    // These do not exist at runtime.
+    ///
+    readonly TType: Struct<T>;
+    readonly TArray: Struct<T>['TArray'];
+    readonly TValue: Struct<T>['TValue'];
+
+    /**
+     * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/isConcatSpreadable
+     */
+    [Symbol.isConcatSpreadable]: true;
+}
+
+/** @ignore */
+export class RecordBatch<T extends TypeMap = any> {
+
+    constructor(columns: { [P in keyof T]: Data<T[P]> });
+    constructor(schema: Schema<T>, data?: Data<Struct<T>>);
+    constructor(...args: any[]) {
+        switch (args.length) {
+            case 2: {
+                [this.schema] = args;
+                if (!(this.schema instanceof Schema)) {
+                    throw new TypeError('RecordBatch constructor expects a [Schema, Data] pair.');
+                }
+                [,
+                    this.data = makeData({
+                        nullCount: 0,
+                        type: new Struct<T>(this.schema.fields),
+                        children: this.schema.fields.map((f) => makeData({ type: f.type, nullCount: 0 }))
+                    })
+                ] = args;
+                if (!(this.data instanceof Data)) {
+                    throw new TypeError('RecordBatch constructor expects a [Schema, Data] pair.');
+                }
+                [this.schema, this.data] = ensureSameLengthData<T>(this.schema, this.data.children as Data<T[keyof T]>[]);
+                break;
+            }
+            case 1: {
+                const [obj] = args;
+                const { fields, children, length } = Object.keys(obj).reduce((memo, name, i) => {
+                    memo.children[i] = obj[name];
+                    memo.length = Math.max(memo.length, obj[name].length);
+                    memo.fields[i] = Field.new({ name, type: obj[name].type, nullable: true });
+                    return memo;
+                }, {
+                    length: 0,
+                    fields: new Array<Field<T[keyof T]>>(),
+                    children: new Array<Data<T[keyof T]>>(),
+                });
+
+                const schema = new Schema<T>(fields);
+                const data = makeData({ type: new Struct<T>(fields), length, children, nullCount: 0 });
+                [this.schema, this.data] = ensureSameLengthData<T>(schema, data.children as Data<T[keyof T]>[], length);
+                break;
+            }
+            default: throw new TypeError('RecordBatch constructor expects an Object mapping names to child Data, or a [Schema, Data] pair.');
+        }
+    }
+
+    protected _dictionaries?: Map<number, Vector>;
+
+    public readonly schema: Schema<T>;
+    public readonly data: Data<Struct<T>>;
+
+    public get dictionaries() {
+        return this._dictionaries || (this._dictionaries = collectDictionaries(this.schema.fields, this.data.children));
+    }
+
+    /**
+     * The number of columns in this RecordBatch.
+     */
+    public get numCols() { return this.schema.fields.length; }
+
+    /**
+     * The number of rows in this RecordBatch.
+     */
+    public get numRows() { return this.data.length; }
+
+    /**
+     * The number of null rows in this RecordBatch.
+     */
+    public get nullCount() {
+        return this.data.nullCount;
+    }
+
+    /**
+     * Check whether an element is null.
+     * @param index The index at which to read the validity bitmap.
+     */
+    public isValid(index: number) {
+        return this.data.getValid(index);
+    }
+
+    /**
+     * Get a row by position.
+     * @param index The index of the element to read.
+     */
+    public get(index: number) {
+        return getVisitor.visit(this.data, index);
+    }
+
+    /**
+     * Set a row by position.
+     * @param index The index of the element to write.
+     * @param value The value to set.
+     */
+    public set(index: number, value: Struct<T>['TValue']) {
+        return setVisitor.visit(this.data, index, value);
+    }
+
+    /**
+     * Retrieve the index of the first occurrence of a row in an RecordBatch.
+     * @param element The row to locate in the RecordBatch.
+     * @param offset The index at which to begin the search. If offset is omitted, the search starts at index 0.
+     */
+    public indexOf(element: Struct<T>['TValue'], offset?: number): number {
+        return indexOfVisitor.visit(this.data, element, offset);
+    }
+
+    /**
+     * Get the size (in bytes) of a row by index.
+     * @param index The row index for which to compute the byteLength.
+     */
+    public getByteLength(index: number): number {
+        return byteLengthVisitor.visit(this.data, index);
+    }
+
+    /**
+     * Iterator for rows in this RecordBatch.
+     */
+    public [Symbol.iterator]() {
+        return iteratorVisitor.visit(new Vector([this.data])) as IterableIterator<Struct<T>['TValue']>;
+    }
+
+    /**
+     * Return a JavaScript Array of the RecordBatch rows.
+     * @returns An Array of RecordBatch rows.
+     */
+    public toArray() {
+        return [...this];
+    }
+
+    /**
+     * Combines two or more RecordBatch of the same schema.
+     * @param others Additional RecordBatch to add to the end of this RecordBatch.
+     */
+    public concat(...others: RecordBatch<T>[]) {
+        return new Table(this.schema, [this, ...others]);
+    }
+
+    /**
+     * Return a zero-copy sub-section of this RecordBatch.
+     * @param start The beginning of the specified portion of the RecordBatch.
+     * @param end The end of the specified portion of the RecordBatch. This is exclusive of the element at the index 'end'.
+     */
+    public slice(begin?: number, end?: number): RecordBatch<T> {
+        const [slice] = new Vector([this.data]).slice(begin, end).data;
+        return new RecordBatch(this.schema, slice);
+    }
+
+    /**
+     * Returns a child Vector by name, or null if this Vector has no child with the given name.
+     * @param name The name of the child to retrieve.
+     */
+    public getChild<P extends keyof T>(name: P) {
+        return this.getChildAt<T[P]>(this.schema.fields?.findIndex((f) => f.name === name));
+    }
+
+    /**
+     * Returns a child Vector by index, or null if this Vector has no child at the supplied index.
+     * @param index The index of the child to retrieve.
+     */
+    public getChildAt<R extends DataType = any>(index: number): Vector<R> | null {
+        if (index > -1 && index < this.schema.fields.length) {
+            return new Vector([this.data.children[index]]) as Vector<R>;
+        }
+        return null;
+    }
+
+    /**
+     * Sets a child Vector by name.
+     * @param name The name of the child to overwrite.
+     * @returns A new RecordBatch with the new child for the specified name.
+     */
+    public setChild<P extends keyof T, R extends DataType>(name: P, child: Vector<R>) {
+        return this.setChildAt(this.schema.fields?.findIndex((f) => f.name === name), child) as RecordBatch<T & { [K in P]: R }>;
+    }
+
+    /**
+     * Sets a child Vector by index.
+     * @param index The index of the child to overwrite.
+     * @returns A new RecordBatch with the new child at the specified index.
+     */
+    public setChildAt(index: number, child?: null): RecordBatch;
+    public setChildAt<R extends DataType = any>(index: number, child: Vector<R>): RecordBatch;
+    public setChildAt(index: number, child: any) {
+        let schema: Schema = this.schema;
+        let data: Data<Struct> = this.data;
+        if (index > -1 && index < this.numCols) {
+            if (!child) {
+                child = new Vector([makeData({ type: new Null, length: this.numRows })]);
+            }
+            const fields = schema.fields.slice() as Field<any>[];
+            const children = data.children.slice() as Data<any>[];
+            const field = fields[index].clone({ type: child.type });
+            [fields[index], children[index]] = [field, child.data[0]];
+            schema = new Schema(fields, new Map(this.schema.metadata));
+            data = makeData({ type: new Struct<T>(fields), children });
+        }
+        return new RecordBatch(schema, data);
+    }
+
+    /**
+     * Construct a new RecordBatch containing only specified columns.
+     *
+     * @param columnNames Names of columns to keep.
+     * @returns A new RecordBatch of columns matching the specified names.
+     */
+    public select<K extends keyof T = any>(columnNames: K[]) {
+        const schema = this.schema.select(columnNames);
+        const type = new Struct(schema.fields);
+        const children = [] as Data<T[K]>[];
+        for (const name of columnNames) {
+            const index = this.schema.fields.findIndex((f) => f.name === name);
+            if (~index) {
+                children[index] = this.data.children[index] as Data<T[K]>;
+            }
+        }
+        return new RecordBatch(schema, makeData({ type, length: this.numRows, children }));
+    }
+
+    /**
+     * Construct a new RecordBatch containing only columns at the specified indices.
+     *
+     * @param columnIndices Indices of columns to keep.
+     * @returns A new RecordBatch of columns matching at the specified indices.
+     */
+    public selectAt<K extends T = any>(columnIndices: number[]) {
+        const schema = this.schema.selectAt<K>(columnIndices);
+        const children = columnIndices.map((i) => this.data.children[i]).filter(Boolean);
+        const subset = makeData({ type: new Struct(schema.fields), length: this.numRows, children });
+        return new RecordBatch<{ [P in keyof K]: K[P] }>(schema, subset);
+    }
+
+    // Initialize this static property via an IIFE so bundlers don't tree-shake
+    // out this logic, but also so we're still compliant with `"sideEffects": false`
+    protected static [Symbol.toStringTag] = ((proto: RecordBatch) => {
+        (proto as any)._nullCount = -1;
+        (proto as any)[Symbol.isConcatSpreadable] = true;
+        return 'RecordBatch';
+    })(RecordBatch.prototype);
+}
+
+
+/** @ignore */
+function ensureSameLengthData<T extends TypeMap = any>(
+    schema: Schema<T>,
+    chunks: Data<T[keyof T]>[],
+    maxLength = chunks.reduce((max, col) => Math.max(max, col.length), 0)
+) {
+    const fields = [...schema.fields];
+    const children = [...chunks] as Data<T[keyof T]>[];
+    const nullBitmapSize = ((maxLength + 63) & ~63) >> 3;
+
+    for (const [idx, field] of schema.fields.entries()) {
+        const chunk = chunks[idx];
+        if (!chunk || chunk.length !== maxLength) {
+            fields[idx] = field.clone({ nullable: true });
+            children[idx] = chunk?._changeLengthAndBackfillNullBitmap(maxLength) ?? makeData({
+                type: field.type,
+                length: maxLength,
+                nullCount: maxLength,
+                nullBitmap: new Uint8Array(nullBitmapSize)
+            });
+        }
+    }
+
+    return [
+        schema.assign(fields),
+        makeData({ type: new Struct<T>(fields), length: maxLength, children })
+    ] as [Schema<T>, Data<Struct<T>>];
+}
+
+/** @ignore */
+function collectDictionaries(fields: Field[], children: Data[], dictionaries = new Map<number, Vector>()): Map<number, Vector> {
+    for (let i = -1, n = fields.length; ++i < n;) {
+        const field = fields[i];
+        const type = field.type;
+        const data = children[i];
+        if (DataType.isDictionary(type)) {
+            if (!dictionaries.has(type.id)) {
+                if (data.dictionary) {
+                    dictionaries.set(type.id, data.dictionary);
+                }
+            } else if (dictionaries.get(type.id) !== data.dictionary) {
+                throw new Error(`Cannot create Schema containing two different dictionaries with the same Id`);
+            }
+        }
+        if (type.children && type.children.length > 0) {
+            collectDictionaries(type.children, data.children, dictionaries);
+        }
+    }
+    return dictionaries;
+}
+
+/**
+ * An internal class used by the `RecordBatchReader` and `RecordBatchWriter`
+ * implementations to differentiate between a stream with valid zero-length
+ * RecordBatches, and a stream with a Schema message, but no RecordBatches.
+ * @see https://github.com/apache/arrow/pull/4373
+ * @ignore
+ * @private
+ */
+export class _InternalEmptyPlaceholderRecordBatch<T extends TypeMap = any> extends RecordBatch<T> {
+    constructor(schema: Schema<T>) {
+        const children = schema.fields.map((f) => makeData({ type: f.type }));
+        const data = makeData({ type: new Struct<T>(schema.fields), nullCount: 0, children });
+        super(schema, data);
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/row/map.ts b/igv_component/node_modules/apache-arrow/src/row/map.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d0ccb872ec33cff4d8b25ac7d59ce68372616acc
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/row/map.ts
@@ -0,0 +1,152 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Data } from '../data.js';
+import { Vector } from '../vector.js';
+import { DataType, Struct } from '../type.js';
+import { valueToString } from '../util/pretty.js';
+import { instance as getVisitor } from '../visitor/get.js';
+import { instance as setVisitor } from '../visitor/set.js';
+
+/** @ignore */ export const kKeys = Symbol.for('keys');
+/** @ignore */ export const kVals = Symbol.for('vals');
+
+export class MapRow<K extends DataType = any, V extends DataType = any> {
+
+    [key: string]: V['TValue'];
+
+    declare private [kKeys]: Vector<K>;
+    declare private [kVals]: Data<V>;
+
+    constructor(slice: Data<Struct<{ key: K; value: V }>>) {
+        this[kKeys] = new Vector([slice.children[0]]).memoize() as Vector<K>;
+        this[kVals] = slice.children[1] as Data<V>;
+        return new Proxy(this, new MapRowProxyHandler<K, V>());
+    }
+
+    [Symbol.iterator]() {
+        return new MapRowIterator(this[kKeys], this[kVals]);
+    }
+
+    public get size() { return this[kKeys].length; }
+
+    public toArray() { return Object.values(this.toJSON()); }
+
+    public toJSON() {
+        const keys = this[kKeys];
+        const vals = this[kVals];
+        const json = {} as { [P in K['TValue']]: V['TValue'] };
+        for (let i = -1, n = keys.length; ++i < n;) {
+            json[keys.get(i)] = getVisitor.visit(vals, i);
+        }
+        return json;
+    }
+
+    public toString() {
+        return `{${[...this].map(([key, val]) =>
+            `${valueToString(key)}: ${valueToString(val)}`
+        ).join(', ')
+            }}`;
+    }
+
+    public [Symbol.for('nodejs.util.inspect.custom')]() {
+        return this.toString();
+    }
+}
+
+class MapRowIterator<K extends DataType = any, V extends DataType = any>
+    implements IterableIterator<[K['TValue'], V['TValue'] | null]> {
+
+    private keys: Vector<K>;
+    private vals: Data<V>;
+    private numKeys: number;
+    private keyIndex: number;
+
+    constructor(keys: Vector<K>, vals: Data<V>) {
+        this.keys = keys;
+        this.vals = vals;
+        this.keyIndex = 0;
+        this.numKeys = keys.length;
+    }
+
+    [Symbol.iterator]() { return this; }
+
+    next() {
+        const i = this.keyIndex;
+        if (i === this.numKeys) {
+            return { done: true, value: null } as IteratorReturnResult<null>;
+        }
+        this.keyIndex++;
+        return {
+            done: false,
+            value: [
+                this.keys.get(i),
+                getVisitor.visit(this.vals, i),
+            ] as [K['TValue'], V['TValue'] | null]
+        };
+    }
+}
+
+/** @ignore */
+class MapRowProxyHandler<K extends DataType = any, V extends DataType = any> implements ProxyHandler<MapRow<K, V>> {
+    isExtensible() { return false; }
+    deleteProperty() { return false; }
+    preventExtensions() { return true; }
+    ownKeys(row: MapRow<K, V>) {
+        return row[kKeys].toArray().map(String);
+    }
+    has(row: MapRow<K, V>, key: string | symbol) {
+        return row[kKeys].includes(key);
+    }
+    getOwnPropertyDescriptor(row: MapRow<K, V>, key: string | symbol) {
+        const idx = row[kKeys].indexOf(key);
+        if (idx !== -1) {
+            return { writable: true, enumerable: true, configurable: true };
+        }
+        return;
+    }
+    get(row: MapRow<K, V>, key: string | symbol) {
+        // Look up key in row first
+        if (Reflect.has(row, key)) {
+            return (row as any)[key];
+        }
+        const idx = row[kKeys].indexOf(key);
+        if (idx !== -1) {
+            const val = getVisitor.visit(Reflect.get(row, kVals), idx);
+            // Cache key/val lookups
+            Reflect.set(row, key, val);
+            return val;
+        }
+    }
+    set(row: MapRow<K, V>, key: string | symbol, val: V) {
+        const idx = row[kKeys].indexOf(key);
+        if (idx !== -1) {
+            setVisitor.visit(Reflect.get(row, kVals), idx, val);
+            // Cache key/val lookups
+            return Reflect.set(row, key, val);
+        } else if (Reflect.has(row, key)) {
+            return Reflect.set(row, key, val);
+        }
+        return false;
+    }
+}
+
+Object.defineProperties(MapRow.prototype, {
+    [Symbol.toStringTag]: { enumerable: false, configurable: false, value: 'Row' },
+    [kKeys]: { writable: true, enumerable: false, configurable: false, value: null },
+    [kVals]: { writable: true, enumerable: false, configurable: false, value: null },
+});
diff --git a/igv_component/node_modules/apache-arrow/src/row/struct.ts b/igv_component/node_modules/apache-arrow/src/row/struct.ts
new file mode 100644
index 0000000000000000000000000000000000000000..094f6a4b11ac8aae259fb5d0f96a0b67d6ea1f85
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/row/struct.ts
@@ -0,0 +1,159 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Data } from '../data.js';
+import { Field } from '../schema.js';
+import { Struct, TypeMap } from '../type.js';
+import { valueToString } from '../util/pretty.js';
+import { instance as getVisitor } from '../visitor/get.js';
+import { instance as setVisitor } from '../visitor/set.js';
+
+/** @ignore */ const kParent = Symbol.for('parent');
+/** @ignore */ const kRowIndex = Symbol.for('rowIndex');
+
+export type StructRowProxy<T extends TypeMap = any> = StructRow<T> & {
+    [P in keyof T]: T[P]['TValue'];
+} & {
+    [key: symbol]: any;
+};
+
+export class StructRow<T extends TypeMap = any> {
+
+    declare private [kRowIndex]: number;
+    declare private [kParent]: Data<Struct<T>>;
+
+    constructor(parent: Data<Struct<T>>, rowIndex: number) {
+        this[kParent] = parent;
+        this[kRowIndex] = rowIndex;
+        return new Proxy(this, new StructRowProxyHandler());
+    }
+
+    public toArray() { return Object.values(this.toJSON()); }
+
+    public toJSON() {
+        const i = this[kRowIndex];
+        const parent = this[kParent];
+        const keys = parent.type.children;
+        const json = {} as { [P in string & keyof T]: T[P]['TValue'] };
+        for (let j = -1, n = keys.length; ++j < n;) {
+            json[keys[j].name as string & keyof T] = getVisitor.visit(parent.children[j], i);
+        }
+        return json;
+    }
+
+    public toString() {
+        return `{${[...this].map(([key, val]) =>
+            `${valueToString(key)}: ${valueToString(val)}`
+        ).join(', ')
+            }}`;
+    }
+
+    public [Symbol.for('nodejs.util.inspect.custom')]() {
+        return this.toString();
+    }
+
+    [Symbol.iterator](): IterableIterator<[
+        keyof T, { [P in keyof T]: T[P]['TValue'] | null }[keyof T]
+    ]> {
+        return new StructRowIterator(this[kParent], this[kRowIndex]);
+    }
+}
+
+class StructRowIterator<T extends TypeMap = any>
+    implements IterableIterator<[
+        keyof T, { [P in keyof T]: T[P]['TValue'] | null }[keyof T]
+    ]> {
+
+    declare private rowIndex: number;
+    declare private childIndex: number;
+    declare private numChildren: number;
+    declare private children: Data<any>[];
+    declare private childFields: Field<T[keyof T]>[];
+
+    constructor(data: Data<Struct<T>>, rowIndex: number) {
+        this.childIndex = 0;
+        this.children = data.children;
+        this.rowIndex = rowIndex;
+        this.childFields = data.type.children;
+        this.numChildren = this.childFields.length;
+    }
+
+    [Symbol.iterator]() { return this; }
+
+    next() {
+        const i = this.childIndex;
+        if (i < this.numChildren) {
+            this.childIndex = i + 1;
+            return {
+                done: false,
+                value: [
+                    this.childFields[i].name,
+                    getVisitor.visit(this.children[i], this.rowIndex)
+                ]
+            } as IteratorYieldResult<[any, any]>;
+        }
+        return { done: true, value: null } as IteratorReturnResult<null>;
+    }
+}
+
+Object.defineProperties(StructRow.prototype, {
+    [Symbol.toStringTag]: { enumerable: false, configurable: false, value: 'Row' },
+    [kParent]: { writable: true, enumerable: false, configurable: false, value: null },
+    [kRowIndex]: { writable: true, enumerable: false, configurable: false, value: -1 },
+});
+
+class StructRowProxyHandler<T extends TypeMap = any> implements ProxyHandler<StructRow<T>> {
+    isExtensible() { return false; }
+    deleteProperty() { return false; }
+    preventExtensions() { return true; }
+    ownKeys(row: StructRow<T>) {
+        return row[kParent].type.children.map((f) => f.name);
+    }
+    has(row: StructRow<T>, key: string) {
+        return row[kParent].type.children.findIndex((f) => f.name === key) !== -1;
+    }
+    getOwnPropertyDescriptor(row: StructRow<T>, key: string) {
+        if (row[kParent].type.children.findIndex((f) => f.name === key) !== -1) {
+            return { writable: true, enumerable: true, configurable: true };
+        }
+        return;
+    }
+    get(row: StructRow<T>, key: string) {
+        // Look up key in row first
+        if (Reflect.has(row, key)) {
+            return (row as any)[key];
+        }
+        const idx = row[kParent].type.children.findIndex((f) => f.name === key);
+        if (idx !== -1) {
+            const val = getVisitor.visit(row[kParent].children[idx], row[kRowIndex]);
+            // Cache key/val lookups
+            Reflect.set(row, key, val);
+            return val;
+        }
+    }
+    set(row: StructRow<T>, key: string, val: any) {
+        const idx = row[kParent].type.children.findIndex((f) => f.name === key);
+        if (idx !== -1) {
+            setVisitor.visit(row[kParent].children[idx], row[kRowIndex], val);
+            // Cache key/val lookups
+            return Reflect.set(row, key, val);
+        } else if (Reflect.has(row, key) || typeof key === 'symbol') {
+            return Reflect.set(row, key, val);
+        }
+        return false;
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/schema.ts b/igv_component/node_modules/apache-arrow/src/schema.ts
new file mode 100644
index 0000000000000000000000000000000000000000..858bab915b0106406da2d85321e295117fc00d86
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/schema.ts
@@ -0,0 +1,175 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { DataType, TypeMap } from './type.js';
+
+export class Schema<T extends TypeMap = any> {
+
+    public readonly fields: Field<T[keyof T]>[];
+    public readonly metadata: Map<string, string>;
+    public readonly dictionaries: Map<number, DataType>;
+
+    constructor(
+        fields: Field<T[keyof T]>[] = [],
+        metadata?: Map<string, string> | null,
+        dictionaries?: Map<number, DataType> | null) {
+        this.fields = (fields || []) as Field<T[keyof T]>[];
+        this.metadata = metadata || new Map();
+        if (!dictionaries) {
+            dictionaries = generateDictionaryMap(fields);
+        }
+        this.dictionaries = dictionaries;
+    }
+    public get [Symbol.toStringTag]() { return 'Schema'; }
+
+    public get names(): (keyof T)[] { return this.fields.map((f) => f.name); }
+
+    public toString() {
+        return `Schema<{ ${this.fields.map((f, i) => `${i}: ${f}`).join(', ')} }>`;
+    }
+
+    /**
+     * Construct a new Schema containing only specified fields.
+     *
+     * @param fieldNames Names of fields to keep.
+     * @returns A new Schema of fields matching the specified names.
+     */
+    public select<K extends keyof T = any>(fieldNames: K[]) {
+        const names = new Set<string | K>(fieldNames);
+        const fields = this.fields.filter((f) => names.has(f.name)) as Field<T[K]>[];
+        return new Schema<{ [P in K]: T[P] }>(fields, this.metadata);
+    }
+
+    /**
+     * Construct a new Schema containing only fields at the specified indices.
+     *
+     * @param fieldIndices Indices of fields to keep.
+     * @returns A new Schema of fields at the specified indices.
+     */
+    public selectAt<K extends T = any>(fieldIndices: number[]) {
+        const fields = fieldIndices.map((i) => this.fields[i]).filter(Boolean) as Field<K[keyof K]>[];
+        return new Schema<K>(fields, this.metadata);
+    }
+
+    public assign<R extends TypeMap = any>(schema: Schema<R>): Schema<T & R>;
+    public assign<R extends TypeMap = any>(...fields: (Field<R[keyof R]> | Field<R[keyof R]>[])[]): Schema<T & R>;
+    public assign<R extends TypeMap = any>(...args: (Schema<R> | Field<R[keyof R]> | Field<R[keyof R]>[])[]) {
+
+        const other = (args[0] instanceof Schema
+            ? args[0] as Schema<R>
+            : Array.isArray(args[0])
+                ? new Schema<R>(<Field<R[keyof R]>[]>args[0])
+                : new Schema<R>(<Field<R[keyof R]>[]>args));
+
+        const curFields = [...this.fields] as Field[];
+        const metadata = mergeMaps(mergeMaps(new Map(), this.metadata), other.metadata);
+        const newFields = other.fields.filter((f2) => {
+            const i = curFields.findIndex((f) => f.name === f2.name);
+            return ~i ? (curFields[i] = f2.clone({
+                metadata: mergeMaps(mergeMaps(new Map(), curFields[i].metadata), f2.metadata)
+            })) && false : true;
+        }) as Field[];
+
+        const newDictionaries = generateDictionaryMap(newFields, new Map());
+
+        return new Schema<T & R>(
+            [...curFields, ...newFields], metadata,
+            new Map([...this.dictionaries, ...newDictionaries])
+        );
+    }
+}
+
+// Add these here so they're picked up by the externs creator
+// in the build, and closure-compiler doesn't minify them away
+(Schema.prototype as any).fields = <any>null;
+(Schema.prototype as any).metadata = <any>null;
+(Schema.prototype as any).dictionaries = <any>null;
+
+export class Field<T extends DataType = any> {
+
+    public static new<T extends DataType = any>(props: { name: string | number; type: T; nullable?: boolean; metadata?: Map<string, string> | null }): Field<T>;
+    public static new<T extends DataType = any>(name: string | number | Field<T>, type: T, nullable?: boolean, metadata?: Map<string, string> | null): Field<T>;
+    /** @nocollapse */
+    public static new<T extends DataType = any>(...args: any[]) {
+        let [name, type, nullable, metadata] = args;
+        if (args[0] && typeof args[0] === 'object') {
+            ({ name } = args[0]);
+            (type === undefined) && (type = args[0].type);
+            (nullable === undefined) && (nullable = args[0].nullable);
+            (metadata === undefined) && (metadata = args[0].metadata);
+        }
+        return new Field<T>(`${name}`, type, nullable, metadata);
+    }
+
+    public readonly type: T;
+    public readonly name: string;
+    public readonly nullable: boolean;
+    public readonly metadata: Map<string, string>;
+
+    constructor(name: string, type: T, nullable = false, metadata?: Map<string, string> | null) {
+        this.name = name;
+        this.type = type;
+        this.nullable = nullable;
+        this.metadata = metadata || new Map();
+    }
+
+    public get typeId() { return this.type.typeId; }
+    public get [Symbol.toStringTag]() { return 'Field'; }
+    public toString() { return `${this.name}: ${this.type}`; }
+    public clone<R extends DataType = T>(props: { name?: string | number; type?: R; nullable?: boolean; metadata?: Map<string, string> | null }): Field<R>;
+    public clone<R extends DataType = T>(name?: string | number | Field<T>, type?: R, nullable?: boolean, metadata?: Map<string, string> | null): Field<R>;
+    public clone<R extends DataType = T>(...args: any[]) {
+        let [name, type, nullable, metadata] = args;
+        (!args[0] || typeof args[0] !== 'object')
+            ? ([name = this.name, type = this.type, nullable = this.nullable, metadata = this.metadata] = args)
+            : ({ name = this.name, type = this.type, nullable = this.nullable, metadata = this.metadata } = args[0]);
+        return Field.new<R>(name, type, nullable, metadata);
+    }
+}
+
+// Add these here so they're picked up by the externs creator
+// in the build, and closure-compiler doesn't minify them away
+(Field.prototype as any).type = null;
+(Field.prototype as any).name = null;
+(Field.prototype as any).nullable = null;
+(Field.prototype as any).metadata = null;
+
+/** @ignore */
+function mergeMaps<TKey, TVal>(m1?: Map<TKey, TVal> | null, m2?: Map<TKey, TVal> | null): Map<TKey, TVal> {
+    return new Map([...(m1 || new Map()), ...(m2 || new Map())]);
+}
+
+/** @ignore */
+function generateDictionaryMap(fields: Field[], dictionaries = new Map<number, DataType>()): Map<number, DataType> {
+
+    for (let i = -1, n = fields.length; ++i < n;) {
+        const field = fields[i];
+        const type = field.type;
+        if (DataType.isDictionary(type)) {
+            if (!dictionaries.has(type.id)) {
+                dictionaries.set(type.id, type.dictionary);
+            } else if (dictionaries.get(type.id) !== type.dictionary) {
+                throw new Error(`Cannot create Schema containing two different dictionaries with the same Id`);
+            }
+        }
+        if (type.children && type.children.length > 0) {
+            generateDictionaryMap(type.children, dictionaries);
+        }
+    }
+
+    return dictionaries;
+}
diff --git a/igv_component/node_modules/apache-arrow/src/table.ts b/igv_component/node_modules/apache-arrow/src/table.ts
new file mode 100644
index 0000000000000000000000000000000000000000..26f77d74f515a07d6e45c843493ae63d980c1270
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/table.ts
@@ -0,0 +1,444 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Type } from './enum.js';
+import { Data, makeData } from './data.js';
+import { vectorFromArray } from './factories.js';
+import { makeVector, Vector } from './vector.js';
+import { Field, Schema } from './schema.js';
+import { DataType, Null, Struct, TypeMap } from './type.js';
+import { compareSchemas } from './visitor/typecomparator.js';
+import { distributeVectorsIntoRecordBatches } from './util/recordbatch.js';
+
+import {
+    isChunkedValid,
+    computeChunkOffsets,
+    computeChunkNullCounts,
+    wrapChunkedCall1,
+    wrapChunkedCall2,
+    wrapChunkedIndexOf,
+    sliceChunks,
+} from './util/chunk.js';
+
+import { instance as getVisitor } from './visitor/get.js';
+import { instance as setVisitor } from './visitor/set.js';
+import { instance as indexOfVisitor } from './visitor/indexof.js';
+import { instance as iteratorVisitor } from './visitor/iterator.js';
+import { instance as byteLengthVisitor } from './visitor/bytelength.js';
+
+import { DataProps } from './data.js';
+import { clampRange } from './util/vector.js';
+import { ArrayDataType, BigIntArray, TypedArray, TypedArrayDataType } from './interfaces.js';
+import { RecordBatch, _InternalEmptyPlaceholderRecordBatch } from './recordbatch.js';
+
+/** @ignore */
+export interface Table<T extends TypeMap = any> {
+    ///
+    // Virtual properties for the TypeScript compiler.
+    // These do not exist at runtime.
+    ///
+    readonly TType: Struct<T>;
+    readonly TArray: Struct<T>['TArray'];
+    readonly TValue: Struct<T>['TValue'];
+
+    /**
+     * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/isConcatSpreadable
+     */
+    [Symbol.isConcatSpreadable]: true;
+}
+
+/**
+ * Tables are collections of {@link Vector}s and have a {@link Schema}. Use the convenience methods {@link makeTable}
+ * or {@link tableFromArrays} to create a table in JavaScript. To create a table from the IPC format, use
+ * {@link tableFromIPC}.
+ */
+export class Table<T extends TypeMap = any> {
+
+    constructor();
+    constructor(batches: Iterable<RecordBatch<T>>);
+    constructor(...batches: readonly RecordBatch<T>[]);
+    constructor(...columns: { [P in keyof T]: Vector<T[P]> }[]);
+    constructor(...columns: { [P in keyof T]: Data<T[P]> | DataProps<T[P]> }[]);
+    constructor(schema: Schema<T>, data?: RecordBatch<T> | RecordBatch<T>[]);
+    constructor(schema: Schema<T>, data?: RecordBatch<T> | RecordBatch<T>[], offsets?: Uint32Array);
+    constructor(...args: any[]) {
+
+        if (args.length === 0) {
+            this.batches = [];
+            this.schema = new Schema([]);
+            this._offsets = [0];
+            return this;
+        }
+
+        let schema: Schema<T> | undefined;
+        let offsets: Uint32Array | number[] | undefined;
+
+        if (args[0] instanceof Schema) {
+            schema = args.shift() as Schema<T>;
+        }
+
+        if (args[args.length - 1] instanceof Uint32Array) {
+            offsets = args.pop();
+        }
+
+        const unwrap = (x: any): RecordBatch<T>[] => {
+            if (x) {
+                if (x instanceof RecordBatch) {
+                    return [x];
+                } else if (x instanceof Table) {
+                    return x.batches;
+                } else if (x instanceof Data) {
+                    if (x.type instanceof Struct) {
+                        return [new RecordBatch(new Schema(x.type.children), x)];
+                    }
+                } else if (Array.isArray(x)) {
+                    return x.flatMap(v => unwrap(v));
+                } else if (typeof x[Symbol.iterator] === 'function') {
+                    return [...x].flatMap(v => unwrap(v));
+                } else if (typeof x === 'object') {
+                    const keys = Object.keys(x) as (keyof T)[];
+                    const vecs = keys.map((k) => new Vector([x[k]]));
+                    const schema = new Schema(keys.map((k, i) => new Field(String(k), vecs[i].type)));
+                    const [, batches] = distributeVectorsIntoRecordBatches(schema, vecs);
+                    return batches.length === 0 ? [new RecordBatch(x)] : batches;
+                }
+            }
+            return [];
+        };
+
+        const batches = args.flatMap(v => unwrap(v));
+
+        schema = schema ?? batches[0]?.schema ?? new Schema([]);
+
+        if (!(schema instanceof Schema)) {
+            throw new TypeError('Table constructor expects a [Schema, RecordBatch[]] pair.');
+        }
+
+        for (const batch of batches) {
+            if (!(batch instanceof RecordBatch)) {
+                throw new TypeError('Table constructor expects a [Schema, RecordBatch[]] pair.');
+            }
+            if (!compareSchemas(schema, batch.schema)) {
+                throw new TypeError('Table and inner RecordBatch schemas must be equivalent.');
+            }
+        }
+
+        this.schema = schema;
+        this.batches = batches;
+        this._offsets = offsets ?? computeChunkOffsets(this.data);
+    }
+
+    declare protected _offsets: Uint32Array | number[];
+    declare protected _nullCount: number;
+
+    declare public readonly schema: Schema<T>;
+
+    /**
+     * The contiguous {@link RecordBatch `RecordBatch`} chunks of the Table rows.
+     */
+    declare public readonly batches: RecordBatch<T>[];
+
+    /**
+     * The contiguous {@link RecordBatch `RecordBatch`} chunks of the Table rows.
+     */
+    public get data() { return this.batches.map(({ data }) => data); }
+
+    /**
+     * The number of columns in this Table.
+     */
+    public get numCols() { return this.schema.fields.length; }
+
+    /**
+     * The number of rows in this Table.
+     */
+    public get numRows() {
+        return this.data.reduce((numRows, data) => numRows + data.length, 0);
+    }
+
+    /**
+     * The number of null rows in this Table.
+     */
+    public get nullCount() {
+        if (this._nullCount === -1) {
+            this._nullCount = computeChunkNullCounts(this.data);
+        }
+        return this._nullCount;
+    }
+
+    /**
+     * Check whether an element is null.
+     *
+     * @param index The index at which to read the validity bitmap.
+     */
+    // @ts-ignore
+    public isValid(index: number): boolean { return false; }
+
+    /**
+     * Get an element value by position.
+     *
+     * @param index The index of the element to read.
+     */
+    // @ts-ignore
+    public get(index: number): Struct<T>['TValue'] | null { return null; }
+
+    /**
+     * Set an element value by position.
+     *
+     * @param index The index of the element to write.
+     * @param value The value to set.
+     */
+    // @ts-ignore
+    public set(index: number, value: Struct<T>['TValue'] | null): void { return; }
+
+    /**
+     * Retrieve the index of the first occurrence of a value in an Vector.
+     *
+     * @param element The value to locate in the Vector.
+     * @param offset The index at which to begin the search. If offset is omitted, the search starts at index 0.
+     */
+    // @ts-ignore
+    public indexOf(element: Struct<T>['TValue'], offset?: number): number { return -1; }
+
+    /**
+     * Get the size in bytes of an element by index.
+     * @param index The index at which to get the byteLength.
+     */
+    // @ts-ignore
+    public getByteLength(index: number): number { return 0; }
+
+    /**
+     * Iterator for rows in this Table.
+     */
+    public [Symbol.iterator]() {
+        if (this.batches.length > 0) {
+            return iteratorVisitor.visit(new Vector(this.data)) as IterableIterator<Struct<T>['TValue']>;
+        }
+        return (new Array(0))[Symbol.iterator]();
+    }
+
+    /**
+     * Return a JavaScript Array of the Table rows.
+     *
+     * @returns An Array of Table rows.
+     */
+    public toArray() {
+        return [...this];
+    }
+
+    /**
+     * Returns a string representation of the Table rows.
+     *
+     * @returns A string representation of the Table rows.
+     */
+    public toString() {
+        return `[\n  ${this.toArray().join(',\n  ')}\n]`;
+    }
+
+    /**
+     * Combines two or more Tables of the same schema.
+     *
+     * @param others Additional Tables to add to the end of this Tables.
+     */
+    public concat(...others: Table<T>[]) {
+        const schema = this.schema;
+        const data = this.data.concat(others.flatMap(({ data }) => data));
+        return new Table(schema, data.map((data) => new RecordBatch(schema, data)));
+    }
+
+    /**
+     * Return a zero-copy sub-section of this Table.
+     *
+     * @param begin The beginning of the specified portion of the Table.
+     * @param end The end of the specified portion of the Table. This is exclusive of the element at the index 'end'.
+     */
+    public slice(begin?: number, end?: number): Table<T> {
+        const schema = this.schema;
+        [begin, end] = clampRange({ length: this.numRows }, begin, end);
+        const data = sliceChunks(this.data, this._offsets, begin, end);
+        return new Table(schema, data.map((chunk) => new RecordBatch(schema, chunk)));
+    }
+
+    /**
+     * Returns a child Vector by name, or null if this Vector has no child with the given name.
+     *
+     * @param name The name of the child to retrieve.
+     */
+    public getChild<P extends keyof T>(name: P) {
+        return this.getChildAt<T[P]>(this.schema.fields.findIndex((f) => f.name === name));
+    }
+
+    /**
+     * Returns a child Vector by index, or null if this Vector has no child at the supplied index.
+     *
+     * @param index The index of the child to retrieve.
+     */
+    public getChildAt<R extends T[keyof T] = any>(index: number): Vector<R> | null {
+        if (index > -1 && index < this.schema.fields.length) {
+            const data = this.data.map((data) => data.children[index] as Data<R>);
+            if (data.length === 0) {
+                const { type } = this.schema.fields[index] as Field<R>;
+                const empty = makeData<R>({ type, length: 0, nullCount: 0 });
+                data.push(empty._changeLengthAndBackfillNullBitmap(this.numRows));
+            }
+            return new Vector(data);
+        }
+        return null;
+    }
+
+    /**
+     * Sets a child Vector by name.
+     *
+     * @param name The name of the child to overwrite.
+     * @returns A new Table with the supplied child for the specified name.
+     */
+    public setChild<P extends keyof T, R extends DataType>(name: P, child: Vector<R>) {
+        return this.setChildAt(this.schema.fields?.findIndex((f) => f.name === name), child) as Table<T & { [K in P]: R }>;
+    }
+
+    /**
+     * Sets a child Vector by index.
+     *
+     * @param index The index of the child to overwrite.
+     * @returns A new Table with the supplied child at the specified index.
+     */
+    public setChildAt(index: number, child?: null): Table;
+    public setChildAt<R extends DataType = any>(index: number, child: Vector<R>): Table;
+    public setChildAt(index: number, child: any) {
+        let schema: Schema = this.schema;
+        let batches: RecordBatch[] = [...this.batches];
+        if (index > -1 && index < this.numCols) {
+            if (!child) {
+                child = new Vector([makeData({ type: new Null, length: this.numRows })]);
+            }
+            const fields = schema.fields.slice() as Field<any>[];
+            const field = fields[index].clone({ type: child.type });
+            const children = this.schema.fields.map((_, i) => this.getChildAt(i)!);
+            [fields[index], children[index]] = [field, child];
+            [schema, batches] = distributeVectorsIntoRecordBatches(schema, children);
+        }
+        return new Table(schema, batches);
+    }
+
+    /**
+     * Construct a new Table containing only specified columns.
+     *
+     * @param columnNames Names of columns to keep.
+     * @returns A new Table of columns matching the specified names.
+     */
+    public select<K extends keyof T = any>(columnNames: K[]) {
+        const nameToIndex = this.schema.fields.reduce((m, f, i) => m.set(f.name as K, i), new Map<K, number>());
+        return this.selectAt(columnNames.map((columnName) => nameToIndex.get(columnName)!).filter((x) => x > -1));
+    }
+
+    /**
+     * Construct a new Table containing only columns at the specified indices.
+     *
+     * @param columnIndices Indices of columns to keep.
+     * @returns A new Table of columns at the specified indices.
+     */
+    public selectAt<K extends T[keyof T] = any>(columnIndices: number[]) {
+        const schema = this.schema.selectAt(columnIndices);
+        const data = this.batches.map((batch) => batch.selectAt(columnIndices));
+        return new Table<{ [key: string]: K }>(schema, data);
+    }
+
+    public assign<R extends TypeMap = any>(other: Table<R>) {
+
+        const fields = this.schema.fields;
+        const [indices, oldToNew] = other.schema.fields.reduce((memo, f2, newIdx) => {
+            const [indices, oldToNew] = memo;
+            const i = fields.findIndex((f) => f.name === f2.name);
+            ~i ? (oldToNew[i] = newIdx) : indices.push(newIdx);
+            return memo;
+        }, [[], []] as number[][]);
+
+        const schema = this.schema.assign(other.schema);
+        const columns = [
+            ...fields.map((_, i) => [i, oldToNew[i]]).map(([i, j]) =>
+                (j === undefined ? this.getChildAt(i) : other.getChildAt(j))!),
+            ...indices.map((i) => other.getChildAt(i)!)
+        ].filter(Boolean) as Vector<(T & R)[keyof T | keyof R]>[];
+
+        return new Table<T & R>(...distributeVectorsIntoRecordBatches<any>(schema, columns));
+    }
+
+    // Initialize this static property via an IIFE so bundlers don't tree-shake
+    // out this logic, but also so we're still compliant with `"sideEffects": false`
+    protected static [Symbol.toStringTag] = ((proto: Table) => {
+        (proto as any).schema = null;
+        (proto as any).batches = [];
+        (proto as any)._offsets = new Uint32Array([0]);
+        (proto as any)._nullCount = -1;
+        (proto as any)[Symbol.isConcatSpreadable] = true;
+        (proto as any)['isValid'] = wrapChunkedCall1(isChunkedValid);
+        (proto as any)['get'] = wrapChunkedCall1(getVisitor.getVisitFn(Type.Struct));
+        (proto as any)['set'] = wrapChunkedCall2(setVisitor.getVisitFn(Type.Struct));
+        (proto as any)['indexOf'] = wrapChunkedIndexOf(indexOfVisitor.getVisitFn(Type.Struct));
+        (proto as any)['getByteLength'] = wrapChunkedCall1(byteLengthVisitor.getVisitFn(Type.Struct));
+        return 'Table';
+    })(Table.prototype);
+}
+
+
+type VectorsMap<T extends TypeMap> = { [P in keyof T]: Vector<T[P]> };
+
+/**
+ * Creates a new Table from an object of typed arrays.
+ *
+*  @example
+ * ```ts
+ * const table = makeTable({
+ *   a: new Int8Array([1, 2, 3]),
+ * })
+ * ```
+ *
+ * @param input Input an object of typed arrays.
+ * @returns A new Table.
+ */
+export function makeTable<I extends Record<string | number | symbol, TypedArray>>(input: I): Table<{ [P in keyof I]: TypedArrayDataType<I[P]> }> {
+    type T = { [P in keyof I]: TypedArrayDataType<I[P]> };
+    const vecs = {} as VectorsMap<T>;
+    const inputs = Object.entries(input) as [keyof I, I[keyof I]][];
+    for (const [key, col] of inputs) {
+        vecs[key] = makeVector(col);
+    }
+    return new Table<T>(vecs);
+}
+
+/**
+ * Creates a new Table from an object of typed arrays or JavaScript arrays.
+ *
+ *  @example
+ * ```ts
+ * const table = tableFromArrays({
+ *   a: [1, 2, 3],
+ *   b: new Int8Array([1, 2, 3]),
+ * })
+ * ```
+ *
+ * @param input Input an object of typed arrays or JavaScript arrays.
+ * @returns A new Table.
+ */
+export function tableFromArrays<I extends Record<string | number | symbol, TypedArray | BigIntArray | readonly unknown[]>>(input: I): Table<{ [P in keyof I]: ArrayDataType<I[P]> }> {
+    type T = { [P in keyof I]: ArrayDataType<I[P]> };
+    const vecs = {} as VectorsMap<T>;
+    const inputs = Object.entries(input) as [keyof I, I[keyof I]][];
+    for (const [key, col] of inputs) {
+        vecs[key] = vectorFromArray(col);
+    }
+    return new Table<T>(vecs);
+}
diff --git a/igv_component/node_modules/apache-arrow/src/type.ts b/igv_component/node_modules/apache-arrow/src/type.ts
new file mode 100644
index 0000000000000000000000000000000000000000..7674705dad19bee420a956395167af8c58596b60
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/type.ts
@@ -0,0 +1,669 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Field } from './schema.js';
+import { Vector } from './vector.js';
+import { MapRow } from './row/map.js';
+import { StructRow, StructRowProxy } from './row/struct.js';
+import { Long } from 'flatbuffers';
+import { TypedArrayConstructor } from './interfaces.js';
+import { BigInt64Array, BigUint64Array } from './util/compat.js';
+
+import {
+    Type,
+    Precision, UnionMode,
+    DateUnit, TimeUnit, IntervalUnit
+} from './enum.js';
+
+/** @ignore */
+export type TimeBitWidth = 32 | 64;
+/** @ignore */
+export type IntBitWidth = 8 | 16 | 32 | 64;
+/** @ignore */
+export type IsSigned = { 'true': true; 'false': false };
+
+export interface DataType<TType extends Type = Type, TChildren extends TypeMap = any> {
+    readonly TType: TType;
+    readonly TArray: any;
+    readonly TValue: any;
+    readonly TChildren: TChildren;
+    readonly ArrayType: any;
+    readonly children: Field<TChildren[keyof TChildren]>[];
+}
+
+/**
+ * An abstract base class for classes that encapsulate metadata about each of
+ * the logical types that Arrow can represent.
+ */
+export abstract class DataType<TType extends Type = Type, TChildren extends TypeMap = any> {
+
+    declare public [Symbol.toStringTag]: string;
+
+    /** @nocollapse */ static isNull(x: any): x is Null { return x?.typeId === Type.Null; }
+    /** @nocollapse */ static isInt(x: any): x is Int_ { return x?.typeId === Type.Int; }
+    /** @nocollapse */ static isFloat(x: any): x is Float { return x?.typeId === Type.Float; }
+    /** @nocollapse */ static isBinary(x: any): x is Binary { return x?.typeId === Type.Binary; }
+    /** @nocollapse */ static isUtf8(x: any): x is Utf8 { return x?.typeId === Type.Utf8; }
+    /** @nocollapse */ static isBool(x: any): x is Bool { return x?.typeId === Type.Bool; }
+    /** @nocollapse */ static isDecimal(x: any): x is Decimal { return x?.typeId === Type.Decimal; }
+    /** @nocollapse */ static isDate(x: any): x is Date_ { return x?.typeId === Type.Date; }
+    /** @nocollapse */ static isTime(x: any): x is Time_ { return x?.typeId === Type.Time; }
+    /** @nocollapse */ static isTimestamp(x: any): x is Timestamp_ { return x?.typeId === Type.Timestamp; }
+    /** @nocollapse */ static isInterval(x: any): x is Interval_ { return x?.typeId === Type.Interval; }
+    /** @nocollapse */ static isList(x: any): x is List { return x?.typeId === Type.List; }
+    /** @nocollapse */ static isStruct(x: any): x is Struct { return x?.typeId === Type.Struct; }
+    /** @nocollapse */ static isUnion(x: any): x is Union_ { return x?.typeId === Type.Union; }
+    /** @nocollapse */ static isFixedSizeBinary(x: any): x is FixedSizeBinary { return x?.typeId === Type.FixedSizeBinary; }
+    /** @nocollapse */ static isFixedSizeList(x: any): x is FixedSizeList { return x?.typeId === Type.FixedSizeList; }
+    /** @nocollapse */ static isMap(x: any): x is Map_ { return x?.typeId === Type.Map; }
+    /** @nocollapse */ static isDictionary(x: any): x is Dictionary { return x?.typeId === Type.Dictionary; }
+
+    /** @nocollapse */ static isDenseUnion(x: any): x is DenseUnion { return DataType.isUnion(x) && x.mode === UnionMode.Dense; }
+    /** @nocollapse */ static isSparseUnion(x: any): x is SparseUnion { return DataType.isUnion(x) && x.mode === UnionMode.Sparse; }
+
+    public get typeId(): TType { return <any>Type.NONE; }
+
+    protected static [Symbol.toStringTag] = ((proto: DataType) => {
+        (<any>proto).children = null;
+        (<any>proto).ArrayType = Array;
+        return proto[Symbol.toStringTag] = 'DataType';
+    })(DataType.prototype);
+}
+
+/** @ignore */
+export interface Null extends DataType<Type.Null> { TArray: void; TValue: null }
+/** @ignore */
+export class Null extends DataType<Type.Null> {
+    public toString() { return `Null`; }
+    public get typeId() { return Type.Null as Type.Null; }
+    protected static [Symbol.toStringTag] = ((proto: Null) => proto[Symbol.toStringTag] = 'Null')(Null.prototype);
+}
+
+/** @ignore */
+type Ints = Type.Int | Type.Int8 | Type.Int16 | Type.Int32 | Type.Int64 | Type.Uint8 | Type.Uint16 | Type.Uint32 | Type.Uint64;
+/** @ignore */
+type IType = {
+    [Type.Int]: { bitWidth: IntBitWidth; isSigned: true | false; TArray: IntArray; TValue: number | bigint };
+    [Type.Int8]: { bitWidth: 8; isSigned: true; TArray: Int8Array; TValue: number };
+    [Type.Int16]: { bitWidth: 16; isSigned: true; TArray: Int16Array; TValue: number };
+    [Type.Int32]: { bitWidth: 32; isSigned: true; TArray: Int32Array; TValue: number };
+    [Type.Int64]: { bitWidth: 64; isSigned: true; TArray: BigInt64Array; TValue: bigint };
+    [Type.Uint8]: { bitWidth: 8; isSigned: false; TArray: Uint8Array; TValue: number };
+    [Type.Uint16]: { bitWidth: 16; isSigned: false; TArray: Uint16Array; TValue: number };
+    [Type.Uint32]: { bitWidth: 32; isSigned: false; TArray: Uint32Array; TValue: number };
+    [Type.Uint64]: { bitWidth: 64; isSigned: false; TArray: BigUint64Array; TValue: bigint };
+};
+
+/** @ignore */
+interface Int_<T extends Ints = Ints> extends DataType<T> { TArray: IType[T]['TArray']; TValue: IType[T]['TValue'] }
+/** @ignore */
+class Int_<T extends Ints = Ints> extends DataType<T> {
+    constructor(public readonly isSigned: IType[T]['isSigned'],
+        public readonly bitWidth: IType[T]['bitWidth']) {
+        super();
+    }
+    public get typeId() { return Type.Int as T; }
+    public get ArrayType() {
+        switch (this.bitWidth) {
+            case 8: return this.isSigned ? Int8Array : Uint8Array;
+            case 16: return this.isSigned ? Int16Array : Uint16Array;
+            case 32: return this.isSigned ? Int32Array : Uint32Array;
+            case 64: return this.isSigned ? BigInt64Array : BigUint64Array;
+        }
+        throw new Error(`Unrecognized ${this[Symbol.toStringTag]} type`);
+    }
+    public toString() { return `${this.isSigned ? `I` : `Ui`}nt${this.bitWidth}`; }
+    protected static [Symbol.toStringTag] = ((proto: Int_) => {
+        (<any>proto).isSigned = null;
+        (<any>proto).bitWidth = null;
+        return proto[Symbol.toStringTag] = 'Int';
+    })(Int_.prototype);
+}
+
+export { Int_ as Int };
+
+/** @ignore */
+export class Int8 extends Int_<Type.Int8> {
+    constructor() { super(true, 8); }
+    public get ArrayType() { return Int8Array; }
+}
+/** @ignore */
+export class Int16 extends Int_<Type.Int16> {
+    constructor() { super(true, 16); }
+    public get ArrayType() { return Int16Array; }
+}
+/** @ignore */
+export class Int32 extends Int_<Type.Int32> {
+    constructor() { super(true, 32); }
+    public get ArrayType() { return Int32Array; }
+}
+/** @ignore */
+export class Int64 extends Int_<Type.Int64> {
+    constructor() { super(true, 64); }
+    public get ArrayType() { return BigInt64Array; }
+}
+/** @ignore */
+export class Uint8 extends Int_<Type.Uint8> {
+    constructor() { super(false, 8); }
+    public get ArrayType() { return Uint8Array; }
+}
+/** @ignore */
+export class Uint16 extends Int_<Type.Uint16> {
+    constructor() { super(false, 16); }
+    public get ArrayType() { return Uint16Array; }
+}
+/** @ignore */
+export class Uint32 extends Int_<Type.Uint32> {
+    constructor() { super(false, 32); }
+    public get ArrayType() { return Uint32Array; }
+}
+/** @ignore */
+export class Uint64 extends Int_<Type.Uint64> {
+    constructor() { super(false, 64); }
+    public get ArrayType() { return BigUint64Array; }
+}
+
+Object.defineProperty(Int8.prototype, 'ArrayType', { value: Int8Array });
+Object.defineProperty(Int16.prototype, 'ArrayType', { value: Int16Array });
+Object.defineProperty(Int32.prototype, 'ArrayType', { value: Int32Array });
+Object.defineProperty(Int64.prototype, 'ArrayType', { value: BigInt64Array });
+Object.defineProperty(Uint8.prototype, 'ArrayType', { value: Uint8Array });
+Object.defineProperty(Uint16.prototype, 'ArrayType', { value: Uint16Array });
+Object.defineProperty(Uint32.prototype, 'ArrayType', { value: Uint32Array });
+Object.defineProperty(Uint64.prototype, 'ArrayType', { value: BigUint64Array });
+
+/** @ignore */
+type Floats = Type.Float | Type.Float16 | Type.Float32 | Type.Float64;
+/** @ignore */
+type FType = {
+    [Type.Float]: { precision: Precision; TArray: FloatArray; TValue: number };
+    [Type.Float16]: { precision: Precision.HALF; TArray: Uint16Array; TValue: number };
+    [Type.Float32]: { precision: Precision.SINGLE; TArray: Float32Array; TValue: number };
+    [Type.Float64]: { precision: Precision.DOUBLE; TArray: Float64Array; TValue: number };
+};
+
+/** @ignore */
+export interface Float<T extends Floats = Floats> extends DataType<T> { TArray: FType[T]['TArray']; TValue: number }
+/** @ignore */
+export class Float<T extends Floats = Floats> extends DataType<T> {
+    constructor(public readonly precision: Precision) {
+        super();
+    }
+    public get typeId() { return Type.Float as T; }
+    public get ArrayType(): TypedArrayConstructor<FType[T]['TArray']> {
+        switch (this.precision) {
+            case Precision.HALF: return Uint16Array;
+            case Precision.SINGLE: return Float32Array;
+            case Precision.DOUBLE: return Float64Array;
+        }
+        // @ts-ignore
+        throw new Error(`Unrecognized ${this[Symbol.toStringTag]} type`);
+    }
+    public toString() { return `Float${(this.precision << 5) || 16}`; }
+    protected static [Symbol.toStringTag] = ((proto: Float) => {
+        (<any>proto).precision = null;
+        return proto[Symbol.toStringTag] = 'Float';
+    })(Float.prototype);
+}
+
+/** @ignore */
+export class Float16 extends Float<Type.Float16> { constructor() { super(Precision.HALF); } }
+/** @ignore */
+export class Float32 extends Float<Type.Float32> { constructor() { super(Precision.SINGLE); } }
+/** @ignore */
+export class Float64 extends Float<Type.Float64> { constructor() { super(Precision.DOUBLE); } }
+
+Object.defineProperty(Float16.prototype, 'ArrayType', { value: Uint16Array });
+Object.defineProperty(Float32.prototype, 'ArrayType', { value: Float32Array });
+Object.defineProperty(Float64.prototype, 'ArrayType', { value: Float64Array });
+
+/** @ignore */
+export interface Binary extends DataType<Type.Binary> { TArray: Uint8Array; TValue: Uint8Array; ArrayType: TypedArrayConstructor<Uint8Array> }
+/** @ignore */
+export class Binary extends DataType<Type.Binary> {
+    constructor() {
+        super();
+    }
+    public get typeId() { return Type.Binary as Type.Binary; }
+    public toString() { return `Binary`; }
+    protected static [Symbol.toStringTag] = ((proto: Binary) => {
+        (<any>proto).ArrayType = Uint8Array;
+        return proto[Symbol.toStringTag] = 'Binary';
+    })(Binary.prototype);
+}
+
+/** @ignore */
+export interface Utf8 extends DataType<Type.Utf8> { TArray: Uint8Array; TValue: string; ArrayType: TypedArrayConstructor<Uint8Array> }
+/** @ignore */
+export class Utf8 extends DataType<Type.Utf8> {
+    constructor() {
+        super();
+    }
+    public get typeId() { return Type.Utf8 as Type.Utf8; }
+    public toString() { return `Utf8`; }
+    protected static [Symbol.toStringTag] = ((proto: Utf8) => {
+        (<any>proto).ArrayType = Uint8Array;
+        return proto[Symbol.toStringTag] = 'Utf8';
+    })(Utf8.prototype);
+}
+
+/** @ignore */
+export interface Bool extends DataType<Type.Bool> { TArray: Uint8Array; TValue: boolean; ArrayType: TypedArrayConstructor<Uint8Array> }
+/** @ignore */
+export class Bool extends DataType<Type.Bool> {
+    constructor() {
+        super();
+    }
+    public get typeId() { return Type.Bool as Type.Bool; }
+    public toString() { return `Bool`; }
+    protected static [Symbol.toStringTag] = ((proto: Bool) => {
+        (<any>proto).ArrayType = Uint8Array;
+        return proto[Symbol.toStringTag] = 'Bool';
+    })(Bool.prototype);
+}
+
+/** @ignore */
+export interface Decimal extends DataType<Type.Decimal> { TArray: Uint32Array; TValue: Uint32Array; ArrayType: TypedArrayConstructor<Uint32Array> }
+/** @ignore */
+export class Decimal extends DataType<Type.Decimal> {
+    constructor(public readonly scale: number,
+        public readonly precision: number,
+        public readonly bitWidth: number = 128) {
+        super();
+    }
+    public get typeId() { return Type.Decimal as Type.Decimal; }
+    public toString() { return `Decimal[${this.precision}e${this.scale > 0 ? `+` : ``}${this.scale}]`; }
+    protected static [Symbol.toStringTag] = ((proto: Decimal) => {
+        (<any>proto).scale = null;
+        (<any>proto).precision = null;
+        (<any>proto).ArrayType = Uint32Array;
+        return proto[Symbol.toStringTag] = 'Decimal';
+    })(Decimal.prototype);
+}
+
+/** @ignore */
+export type Dates = Type.Date | Type.DateDay | Type.DateMillisecond;
+/** @ignore */
+export interface Date_<T extends Dates = Dates> extends DataType<T> { TArray: Int32Array; TValue: Date; ArrayType: TypedArrayConstructor<Int32Array> }
+/** @ignore */
+export class Date_<T extends Dates = Dates> extends DataType<T> {
+    constructor(public readonly unit: DateUnit) {
+        super();
+    }
+    public get typeId() { return Type.Date as T; }
+    public toString() { return `Date${(this.unit + 1) * 32}<${DateUnit[this.unit]}>`; }
+    protected static [Symbol.toStringTag] = ((proto: Date_) => {
+        (<any>proto).unit = null;
+        (<any>proto).ArrayType = Int32Array;
+        return proto[Symbol.toStringTag] = 'Date';
+    })(Date_.prototype);
+}
+
+/** @ignore */
+export class DateDay extends Date_<Type.DateDay> { constructor() { super(DateUnit.DAY); } }
+/** @ignore */
+export class DateMillisecond extends Date_<Type.DateMillisecond> { constructor() { super(DateUnit.MILLISECOND); } }
+
+/** @ignore */
+type Times = Type.Time | Type.TimeSecond | Type.TimeMillisecond | Type.TimeMicrosecond | Type.TimeNanosecond;
+/** @ignore */
+type TimesType = {
+    [Type.Time]: { unit: TimeUnit; TValue: number | bigint; TArray: Int32Array | BigInt64Array };
+    [Type.TimeSecond]: { unit: TimeUnit.SECOND; TValue: number; TArray: Int32Array };
+    [Type.TimeMillisecond]: { unit: TimeUnit.MILLISECOND; TValue: number; TArray: Int32Array };
+    [Type.TimeMicrosecond]: { unit: TimeUnit.MICROSECOND; TValue: bigint; TArray: BigInt64Array };
+    [Type.TimeNanosecond]: { unit: TimeUnit.NANOSECOND; TValue: bigint; TArray: BigInt64Array };
+};
+
+/** @ignore */
+interface Time_<T extends Times = Times> extends DataType<T> {
+    TArray: TimesType[T]['TArray'];
+    TValue: TimesType[T]['TValue'];
+}
+/** @ignore */
+class Time_<T extends Times = Times> extends DataType<T> {
+    constructor(public readonly unit: TimesType[T]['unit'],
+        public readonly bitWidth: TimeBitWidth) {
+        super();
+    }
+    public get typeId() { return Type.Time as T; }
+    public toString() { return `Time${this.bitWidth}<${TimeUnit[this.unit]}>`; }
+    public get ArrayType() {
+        switch (this.bitWidth) {
+            case 32: return Int32Array;
+            case 64: return BigInt64Array;
+        }
+        // @ts-ignore
+        throw new Error(`Unrecognized ${this[Symbol.toStringTag]} type`);
+    }
+    protected static [Symbol.toStringTag] = ((proto: Time_) => {
+        (<any>proto).unit = null;
+        (<any>proto).bitWidth = null;
+        return proto[Symbol.toStringTag] = 'Time';
+    })(Time_.prototype);
+}
+
+export { Time_ as Time };
+
+/** @ignore */
+export class TimeSecond extends Time_<Type.TimeSecond> { constructor() { super(TimeUnit.SECOND, 32); } }
+/** @ignore */
+export class TimeMillisecond extends Time_<Type.TimeMillisecond> { constructor() { super(TimeUnit.MILLISECOND, 32); } }
+/** @ignore */
+export class TimeMicrosecond extends Time_<Type.TimeMicrosecond> { constructor() { super(TimeUnit.MICROSECOND, 64); } }
+/** @ignore */
+export class TimeNanosecond extends Time_<Type.TimeNanosecond> { constructor() { super(TimeUnit.NANOSECOND, 64); } }
+
+/** @ignore */
+type Timestamps = Type.Timestamp | Type.TimestampSecond | Type.TimestampMillisecond | Type.TimestampMicrosecond | Type.TimestampNanosecond;
+/** @ignore */
+interface Timestamp_<T extends Timestamps = Timestamps> extends DataType<T> {
+    TArray: Int32Array;
+    TValue: number;
+    ArrayType: TypedArrayConstructor<Int32Array>;
+}
+
+/** @ignore */
+class Timestamp_<T extends Timestamps = Timestamps> extends DataType<T> {
+    constructor(public readonly unit: TimeUnit,
+        public readonly timezone?: string | null) {
+        super();
+    }
+    public get typeId() { return Type.Timestamp as T; }
+    public toString() { return `Timestamp<${TimeUnit[this.unit]}${this.timezone ? `, ${this.timezone}` : ``}>`; }
+    protected static [Symbol.toStringTag] = ((proto: Timestamp_) => {
+        (<any>proto).unit = null;
+        (<any>proto).timezone = null;
+        (<any>proto).ArrayType = Int32Array;
+        return proto[Symbol.toStringTag] = 'Timestamp';
+    })(Timestamp_.prototype);
+}
+
+export { Timestamp_ as Timestamp };
+
+/** @ignore */
+export class TimestampSecond extends Timestamp_<Type.TimestampSecond> { constructor(timezone?: string | null) { super(TimeUnit.SECOND, timezone); } }
+/** @ignore */
+export class TimestampMillisecond extends Timestamp_<Type.TimestampMillisecond> { constructor(timezone?: string | null) { super(TimeUnit.MILLISECOND, timezone); } }
+/** @ignore */
+export class TimestampMicrosecond extends Timestamp_<Type.TimestampMicrosecond> { constructor(timezone?: string | null) { super(TimeUnit.MICROSECOND, timezone); } }
+/** @ignore */
+export class TimestampNanosecond extends Timestamp_<Type.TimestampNanosecond> { constructor(timezone?: string | null) { super(TimeUnit.NANOSECOND, timezone); } }
+
+/** @ignore */
+type Intervals = Type.Interval | Type.IntervalDayTime | Type.IntervalYearMonth;
+/** @ignore */
+interface Interval_<T extends Intervals = Intervals> extends DataType<T> {
+    TArray: Int32Array;
+    TValue: Int32Array;
+    ArrayType: TypedArrayConstructor<Int32Array>;
+}
+
+/** @ignore */
+class Interval_<T extends Intervals = Intervals> extends DataType<T> {
+    constructor(public readonly unit: IntervalUnit) {
+        super();
+    }
+    public get typeId() { return Type.Interval as T; }
+    public toString() { return `Interval<${IntervalUnit[this.unit]}>`; }
+    protected static [Symbol.toStringTag] = ((proto: Interval_) => {
+        (<any>proto).unit = null;
+        (<any>proto).ArrayType = Int32Array;
+        return proto[Symbol.toStringTag] = 'Interval';
+    })(Interval_.prototype);
+}
+
+export { Interval_ as Interval };
+
+/** @ignore */
+export class IntervalDayTime extends Interval_<Type.IntervalDayTime> { constructor() { super(IntervalUnit.DAY_TIME); } }
+/** @ignore */
+export class IntervalYearMonth extends Interval_<Type.IntervalYearMonth> { constructor() { super(IntervalUnit.YEAR_MONTH); } }
+
+/** @ignore */
+export interface List<T extends DataType = any> extends DataType<Type.List, { [0]: T }> {
+    TArray: Array<T>;
+    TValue: Vector<T>;
+}
+
+/** @ignore */
+export class List<T extends DataType = any> extends DataType<Type.List, { [0]: T }> {
+    constructor(child: Field<T>) {
+        super();
+        this.children = [child];
+    }
+    public declare readonly children: Field<T>[];
+    public get typeId() { return Type.List as Type.List; }
+    public toString() { return `List<${this.valueType}>`; }
+    public get valueType(): T { return this.children[0].type as T; }
+    public get valueField(): Field<T> { return this.children[0] as Field<T>; }
+    public get ArrayType(): T['ArrayType'] { return this.valueType.ArrayType; }
+    protected static [Symbol.toStringTag] = ((proto: List) => {
+        (<any>proto).children = null;
+        return proto[Symbol.toStringTag] = 'List';
+    })(List.prototype);
+}
+
+/** @ignore */
+export interface Struct<T extends TypeMap = any> extends DataType<Type.Struct, T> {
+    TArray: Array<StructRowProxy<T>>;
+    TValue: StructRowProxy<T>;
+    dataTypes: T;
+}
+
+/** @ignore */
+export class Struct<T extends TypeMap = any> extends DataType<Type.Struct, T> {
+    public declare _row: StructRow<T>;
+    public declare readonly children: Field<T[keyof T]>[];
+    constructor(children: Field<T[keyof T]>[]) {
+        super();
+        this.children = children;
+    }
+    public get typeId() { return Type.Struct as Type.Struct; }
+    public toString() { return `Struct<{${this.children.map((f) => `${f.name}:${f.type}`).join(`, `)}}>`; }
+    protected static [Symbol.toStringTag] = ((proto: Struct) => {
+        (<any>proto).children = null;
+        return proto[Symbol.toStringTag] = 'Struct';
+    })(Struct.prototype);
+}
+
+/** @ignore */
+type Unions = Type.Union | Type.DenseUnion | Type.SparseUnion;
+/** @ignore */
+interface Union_<T extends Unions = Unions> extends DataType<T> { TArray: Int8Array; TValue: any; ArrayType: TypedArrayConstructor<Int8Array> }
+/** @ignore */
+class Union_<T extends Unions = Unions> extends DataType<T> {
+    public declare readonly mode: UnionMode;
+    public declare readonly typeIds: Int32Array;
+    public declare readonly children: Field<any>[];
+    public declare readonly typeIdToChildIndex: { [key: number]: number };
+    constructor(mode: UnionMode,
+        typeIds: number[] | Int32Array,
+        children: Field<any>[]) {
+        super();
+        this.mode = mode;
+        this.children = children;
+        this.typeIds = typeIds = Int32Array.from(typeIds);
+        this.typeIdToChildIndex = typeIds.reduce((typeIdToChildIndex, typeId, idx) => (typeIdToChildIndex[typeId] = idx) && typeIdToChildIndex || typeIdToChildIndex, Object.create(null) as { [key: number]: number });
+    }
+    public get typeId() { return Type.Union as T; }
+    public toString() {
+        return `${this[Symbol.toStringTag]}<${this.children.map((x) => `${x.type}`).join(` | `)
+            }>`;
+    }
+    protected static [Symbol.toStringTag] = ((proto: Union_) => {
+        (<any>proto).mode = null;
+        (<any>proto).typeIds = null;
+        (<any>proto).children = null;
+        (<any>proto).typeIdToChildIndex = null;
+        (<any>proto).ArrayType = Int8Array;
+        return proto[Symbol.toStringTag] = 'Union';
+    })(Union_.prototype);
+}
+
+export { Union_ as Union };
+
+/** @ignore */
+export class DenseUnion extends Union_<Type.DenseUnion> {
+    constructor(typeIds: number[] | Int32Array, children: Field[]) {
+        super(UnionMode.Dense, typeIds, children);
+    }
+}
+
+/** @ignore */
+export class SparseUnion extends Union_<Type.SparseUnion> {
+    constructor(typeIds: number[] | Int32Array, children: Field[]) {
+        super(UnionMode.Sparse, typeIds, children);
+    }
+}
+
+/** @ignore */
+export interface FixedSizeBinary extends DataType<Type.FixedSizeBinary> {
+    TArray: Uint8Array;
+    TValue: Uint8Array;
+    ArrayType: TypedArrayConstructor<Uint8Array>;
+}
+
+/** @ignore */
+export class FixedSizeBinary extends DataType<Type.FixedSizeBinary> {
+    constructor(public readonly byteWidth: number) {
+        super();
+    }
+    public get typeId() { return Type.FixedSizeBinary as Type.FixedSizeBinary; }
+    public toString() { return `FixedSizeBinary[${this.byteWidth}]`; }
+    protected static [Symbol.toStringTag] = ((proto: FixedSizeBinary) => {
+        (<any>proto).byteWidth = null;
+        (<any>proto).ArrayType = Uint8Array;
+        return proto[Symbol.toStringTag] = 'FixedSizeBinary';
+    })(FixedSizeBinary.prototype);
+}
+
+/** @ignore */
+export interface FixedSizeList<T extends DataType = any> extends DataType<Type.FixedSizeList, { [0]: T }> {
+    TArray: Array<T['TArray']>;
+    TValue: Vector<T>;
+}
+
+/** @ignore */
+export class FixedSizeList<T extends DataType = any> extends DataType<Type.FixedSizeList, { [0]: T }> {
+    public declare readonly children: Field<T>[];
+    constructor(public readonly listSize: number, child: Field<T>) {
+        super();
+        this.children = [child];
+    }
+    public get typeId() { return Type.FixedSizeList as Type.FixedSizeList; }
+    public get valueType(): T { return this.children[0].type as T; }
+    public get valueField(): Field<T> { return this.children[0] as Field<T>; }
+    public get ArrayType(): T['ArrayType'] { return this.valueType.ArrayType; }
+    public toString() { return `FixedSizeList[${this.listSize}]<${this.valueType}>`; }
+    protected static [Symbol.toStringTag] = ((proto: FixedSizeList) => {
+        (<any>proto).children = null;
+        (<any>proto).listSize = null;
+        return proto[Symbol.toStringTag] = 'FixedSizeList';
+    })(FixedSizeList.prototype);
+}
+
+/** @ignore */
+export interface Map_<TKey extends DataType = any, TValue extends DataType = any> extends DataType<Type.Map, { [0]: Struct<{ key: TKey; value: TValue }> }> {
+    TArray: Array<Map<TKey['TValue'], TValue['TValue'] | null>>;
+    TChild: Struct<{ key: TKey; value: TValue }>;
+    TValue: MapRow<TKey, TValue>;
+}
+
+/** @ignore */
+export class Map_<TKey extends DataType = any, TValue extends DataType = any> extends DataType<Type.Map, { [0]: Struct<{ key: TKey; value: TValue }> }> {
+    constructor(child: Field<Struct<{ key: TKey; value: TValue }>>, keysSorted = false) {
+        super();
+        this.children = [child];
+        this.keysSorted = keysSorted;
+    }
+    public declare readonly keysSorted: boolean;
+    public declare readonly children: Field<Struct<{ key: TKey; value: TValue }>>[];
+    public get typeId() { return Type.Map as Type.Map; }
+    public get keyType(): TKey { return this.children[0].type.children[0].type as TKey; }
+    public get valueType(): TValue { return this.children[0].type.children[1].type as TValue; }
+    public get childType() { return this.children[0].type as Struct<{ key: TKey; value: TValue }>; }
+    public toString() { return `Map<{${this.children[0].type.children.map((f) => `${f.name}:${f.type}`).join(`, `)}}>`; }
+    protected static [Symbol.toStringTag] = ((proto: Map_) => {
+        (<any>proto).children = null;
+        (<any>proto).keysSorted = null;
+        return proto[Symbol.toStringTag] = 'Map_';
+    })(Map_.prototype);
+}
+
+/** @ignore */
+const getId = ((atomicDictionaryId) => () => ++atomicDictionaryId)(-1);
+
+/** @ignore */
+export type TKeys = Int8 | Int16 | Int32 | Uint8 | Uint16 | Uint32;
+
+/** @ignore */
+export interface Dictionary<T extends DataType = any, TKey extends TKeys = TKeys> extends DataType<Type.Dictionary> {
+    TArray: TKey['TArray'];
+    TValue: T['TValue'];
+}
+
+/** @ignore */
+export class Dictionary<T extends DataType = any, TKey extends TKeys = TKeys> extends DataType<Type.Dictionary> {
+    public declare readonly id: number;
+    public declare readonly indices: TKey;
+    public declare readonly dictionary: T;
+    public declare readonly isOrdered: boolean;
+    constructor(dictionary: T, indices: TKey, id?: Long | number | null, isOrdered?: boolean | null) {
+        super();
+        this.indices = indices;
+        this.dictionary = dictionary;
+        this.isOrdered = isOrdered || false;
+        this.id = id == null ? getId() : (typeof id === 'number' ? id : id.low);
+    }
+    public get typeId() { return Type.Dictionary as Type.Dictionary; }
+    public get children() { return this.dictionary.children; }
+    public get valueType(): T { return this.dictionary as T; }
+    public get ArrayType(): T['ArrayType'] { return this.dictionary.ArrayType; }
+    public toString() { return `Dictionary<${this.indices}, ${this.dictionary}>`; }
+    protected static [Symbol.toStringTag] = ((proto: Dictionary) => {
+        (<any>proto).id = null;
+        (<any>proto).indices = null;
+        (<any>proto).isOrdered = null;
+        (<any>proto).dictionary = null;
+        return proto[Symbol.toStringTag] = 'Dictionary';
+    })(Dictionary.prototype);
+}
+
+/** @ignore */
+export type FloatArray = Uint16Array | Float32Array | Float64Array;
+/** @ignore */
+export type IntArray = Int8Array | Int16Array | Int32Array | Uint8Array | Uint16Array | Uint32Array;
+
+/** @ignore */
+export function strideForType(type: DataType) {
+    const t: any = type;
+    switch (type.typeId) {
+        case Type.Decimal: return (type as Decimal).bitWidth / 32;
+        case Type.Timestamp: return 2;
+        case Type.Date: return 1 + (t as Date_).unit;
+        case Type.Interval: return 1 + (t as Interval_).unit;
+        // case Type.Int: return 1 + +((t as Int_).bitWidth > 32);
+        // case Type.Time: return 1 + +((t as Time_).bitWidth > 32);
+        case Type.FixedSizeList: return (t as FixedSizeList).listSize;
+        case Type.FixedSizeBinary: return (t as FixedSizeBinary).byteWidth;
+        default: return 1;
+    }
+}
+
+/** @ignore */
+export type TypeMap = Record<string | number | symbol, DataType>;
diff --git a/igv_component/node_modules/apache-arrow/src/util/bit.ts b/igv_component/node_modules/apache-arrow/src/util/bit.ts
new file mode 100644
index 0000000000000000000000000000000000000000..ddda9cee58093798f5b25b862ae3750618ee12b1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/util/bit.ts
@@ -0,0 +1,161 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+/** @ignore */
+export function getBool(_data: any, _index: number, byte: number, bit: number) {
+    return (byte & 1 << bit) !== 0;
+}
+
+/** @ignore */
+export function getBit(_data: any, _index: number, byte: number, bit: number): 0 | 1 {
+    return (byte & 1 << bit) >> bit as (0 | 1);
+}
+
+/** @ignore */
+export function setBool(bytes: Uint8Array, index: number, value: any) {
+    return value ?
+        !!(bytes[index >> 3] |= (1 << (index % 8))) || true :
+        !(bytes[index >> 3] &= ~(1 << (index % 8))) && false;
+}
+
+/** @ignore */
+export function truncateBitmap(offset: number, length: number, bitmap: Uint8Array) {
+    const alignedSize = (bitmap.byteLength + 7) & ~7;
+    if (offset > 0 || bitmap.byteLength < alignedSize) {
+        const bytes = new Uint8Array(alignedSize);
+        // If the offset is a multiple of 8 bits, it's safe to slice the bitmap
+        bytes.set(offset % 8 === 0 ? bitmap.subarray(offset >> 3) :
+            // Otherwise iterate each bit from the offset and return a new one
+            packBools(new BitIterator(bitmap, offset, length, null, getBool)).subarray(0, alignedSize));
+        return bytes;
+    }
+    return bitmap;
+}
+
+/** @ignore */
+export function packBools(values: Iterable<any>) {
+    const xs: number[] = [];
+    let i = 0, bit = 0, byte = 0;
+    for (const value of values) {
+        value && (byte |= 1 << bit);
+        if (++bit === 8) {
+            xs[i++] = byte;
+            byte = bit = 0;
+        }
+    }
+    if (i === 0 || bit > 0) { xs[i++] = byte; }
+    const b = new Uint8Array((xs.length + 7) & ~7);
+    b.set(xs);
+    return b;
+}
+
+/** @ignore */
+export class BitIterator<T> implements IterableIterator<T> {
+    bit: number;
+    byte: number;
+    byteIndex: number;
+    index: number;
+
+    constructor(
+        private bytes: Uint8Array,
+        begin: number,
+        private length: number,
+        private context: any,
+        private get: (context: any, index: number, byte: number, bit: number) => T
+    ) {
+        this.bit = begin % 8;
+        this.byteIndex = begin >> 3;
+        this.byte = bytes[this.byteIndex++];
+        this.index = 0;
+    }
+
+    next(): IteratorResult<T> {
+        if (this.index < this.length) {
+            if (this.bit === 8) {
+                this.bit = 0;
+                this.byte = this.bytes[this.byteIndex++];
+            }
+            return {
+                value: this.get(this.context, this.index++, this.byte, this.bit++)
+            };
+        }
+        return { done: true, value: null };
+    }
+
+    [Symbol.iterator]() {
+        return this;
+    }
+}
+
+/**
+ * Compute the population count (the number of bits set to 1) for a range of bits in a Uint8Array.
+ * @param vector The Uint8Array of bits for which to compute the population count.
+ * @param lhs The range's left-hand side (or start) bit
+ * @param rhs The range's right-hand side (or end) bit
+ */
+/** @ignore */
+export function popcnt_bit_range(data: Uint8Array, lhs: number, rhs: number): number {
+    if (rhs - lhs <= 0) { return 0; }
+    // If the bit range is less than one byte, sum the 1 bits in the bit range
+    if (rhs - lhs < 8) {
+        let sum = 0;
+        for (const bit of new BitIterator(data, lhs, rhs - lhs, data, getBit)) {
+            sum += bit;
+        }
+        return sum;
+    }
+    // Get the next lowest multiple of 8 from the right hand side
+    const rhsInside = rhs >> 3 << 3;
+    // Get the next highest multiple of 8 from the left hand side
+    const lhsInside = lhs + (lhs % 8 === 0 ? 0 : 8 - lhs % 8);
+    return (
+        // Get the popcnt of bits between the left hand side, and the next highest multiple of 8
+        popcnt_bit_range(data, lhs, lhsInside) +
+        // Get the popcnt of bits between the right hand side, and the next lowest multiple of 8
+        popcnt_bit_range(data, rhsInside, rhs) +
+        // Get the popcnt of all bits between the left and right hand sides' multiples of 8
+        popcnt_array(data, lhsInside >> 3, (rhsInside - lhsInside) >> 3)
+    );
+}
+
+/** @ignore */
+export function popcnt_array(arr: ArrayBufferView, byteOffset?: number, byteLength?: number) {
+    let cnt = 0, pos = Math.trunc(byteOffset!);
+    const view = new DataView(arr.buffer, arr.byteOffset, arr.byteLength);
+    const len = byteLength === void 0 ? arr.byteLength : pos + byteLength;
+    while (len - pos >= 4) {
+        cnt += popcnt_uint32(view.getUint32(pos));
+        pos += 4;
+    }
+    while (len - pos >= 2) {
+        cnt += popcnt_uint32(view.getUint16(pos));
+        pos += 2;
+    }
+    while (len - pos >= 1) {
+        cnt += popcnt_uint32(view.getUint8(pos));
+        pos += 1;
+    }
+    return cnt;
+}
+
+/** @ignore */
+export function popcnt_uint32(uint32: number): number {
+    let i = Math.trunc(uint32);
+    i = i - ((i >>> 1) & 0x55555555);
+    i = (i & 0x33333333) + ((i >>> 2) & 0x33333333);
+    return (((i + (i >>> 4)) & 0x0F0F0F0F) * 0x01010101) >>> 24;
+}
diff --git a/igv_component/node_modules/apache-arrow/src/util/bn.ts b/igv_component/node_modules/apache-arrow/src/util/bn.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e83443a2423b0803818367a6432429779ac35baf
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/util/bn.ts
@@ -0,0 +1,235 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { ArrayBufferViewInput, toArrayBufferView } from './buffer.js';
+import { TypedArray, TypedArrayConstructor } from '../interfaces.js';
+import { BigIntArray, BigIntArrayConstructor } from '../interfaces.js';
+import { BigIntAvailable, BigInt64Array, BigUint64Array } from './compat.js';
+
+/** @ignore */
+export const isArrowBigNumSymbol = Symbol.for('isArrowBigNum');
+
+/** @ignore */ type BigNumArray = IntArray | UintArray;
+/** @ignore */ type IntArray = Int8Array | Int16Array | Int32Array;
+/** @ignore */ type UintArray = Uint8Array | Uint16Array | Uint32Array | Uint8ClampedArray;
+
+/** @ignore */
+function BigNum(this: any, x: any, ...xs: any) {
+    if (xs.length === 0) {
+        return Object.setPrototypeOf(toArrayBufferView(this['TypedArray'], x), this.constructor.prototype);
+    }
+    return Object.setPrototypeOf(new this['TypedArray'](x, ...xs), this.constructor.prototype);
+}
+
+BigNum.prototype[isArrowBigNumSymbol] = true;
+BigNum.prototype.toJSON = function <T extends BN<BigNumArray>>(this: T) { return `"${bignumToString(this)}"`; };
+BigNum.prototype.valueOf = function <T extends BN<BigNumArray>>(this: T) { return bignumToNumber(this); };
+BigNum.prototype.toString = function <T extends BN<BigNumArray>>(this: T) { return bignumToString(this); };
+BigNum.prototype[Symbol.toPrimitive] = function <T extends BN<BigNumArray>>(this: T, hint: 'string' | 'number' | 'default' = 'default') {
+    switch (hint) {
+        case 'number': return bignumToNumber(this);
+        case 'string': return bignumToString(this);
+        case 'default': return bignumToBigInt(this);
+    }
+    // @ts-ignore
+    return bignumToString(this);
+};
+
+/** @ignore */
+type TypedArrayConstructorArgs =
+    [number | void] |
+    [Iterable<number> | Iterable<bigint>] |
+    [ArrayBufferLike, number | void, number | void];
+
+/** @ignore */
+function SignedBigNum(this: any, ...args: TypedArrayConstructorArgs) { return BigNum.apply(this, args); }
+/** @ignore */
+function UnsignedBigNum(this: any, ...args: TypedArrayConstructorArgs) { return BigNum.apply(this, args); }
+/** @ignore */
+function DecimalBigNum(this: any, ...args: TypedArrayConstructorArgs) { return BigNum.apply(this, args); }
+
+Object.setPrototypeOf(SignedBigNum.prototype, Object.create(Int32Array.prototype));
+Object.setPrototypeOf(UnsignedBigNum.prototype, Object.create(Uint32Array.prototype));
+Object.setPrototypeOf(DecimalBigNum.prototype, Object.create(Uint32Array.prototype));
+Object.assign(SignedBigNum.prototype, BigNum.prototype, { 'constructor': SignedBigNum, 'signed': true, 'TypedArray': Int32Array, 'BigIntArray': BigInt64Array });
+Object.assign(UnsignedBigNum.prototype, BigNum.prototype, { 'constructor': UnsignedBigNum, 'signed': false, 'TypedArray': Uint32Array, 'BigIntArray': BigUint64Array });
+Object.assign(DecimalBigNum.prototype, BigNum.prototype, { 'constructor': DecimalBigNum, 'signed': true, 'TypedArray': Uint32Array, 'BigIntArray': BigUint64Array });
+
+/** @ignore */
+function bignumToNumber<T extends BN<BigNumArray>>(bn: T) {
+    const { buffer, byteOffset, length, 'signed': signed } = bn;
+    const words = new BigUint64Array(buffer, byteOffset, length);
+    const negative = signed && words[words.length - 1] & (BigInt(1) << BigInt(63));
+    let number = negative ? BigInt(1) : BigInt(0);
+    let i = BigInt(0);
+    if (!negative) {
+        for (const word of words) {
+            number += word * (BigInt(1) << (BigInt(32) * i++));
+        }
+    } else {
+        for (const word of words) {
+            number += ~word * (BigInt(1) << (BigInt(32) * i++));
+        }
+        number *= BigInt(-1);
+    }
+    return number;
+}
+
+/** @ignore */
+export let bignumToString: { <T extends BN<BigNumArray>>(a: T): string };
+/** @ignore */
+export let bignumToBigInt: { <T extends BN<BigNumArray>>(a: T): bigint };
+
+if (!BigIntAvailable) {
+    bignumToString = decimalToString;
+    bignumToBigInt = <any>bignumToString;
+} else {
+    bignumToBigInt = (<T extends BN<BigNumArray>>(a: T) => a.byteLength === 8 ? new a['BigIntArray'](a.buffer, a.byteOffset, 1)[0] : <any>decimalToString(a));
+    bignumToString = (<T extends BN<BigNumArray>>(a: T) => a.byteLength === 8 ? `${new a['BigIntArray'](a.buffer, a.byteOffset, 1)[0]}` : decimalToString(a));
+}
+
+/** @ignore */
+function decimalToString<T extends BN<BigNumArray>>(a: T) {
+    let digits = '';
+    const base64 = new Uint32Array(2);
+    let base32 = new Uint16Array(a.buffer, a.byteOffset, a.byteLength / 2);
+    const checks = new Uint32Array((base32 = new Uint16Array(base32).reverse()).buffer);
+    let i = -1;
+    const n = base32.length - 1;
+    do {
+        for (base64[0] = base32[i = 0]; i < n;) {
+            base32[i++] = base64[1] = base64[0] / 10;
+            base64[0] = ((base64[0] - base64[1] * 10) << 16) + base32[i];
+        }
+        base32[i] = base64[1] = base64[0] / 10;
+        base64[0] = base64[0] - base64[1] * 10;
+        digits = `${base64[0]}${digits}`;
+    } while (checks[0] || checks[1] || checks[2] || checks[3]);
+    return digits ?? `0`;
+}
+
+/** @ignore */
+export class BN<T extends BigNumArray> {
+    /** @nocollapse */
+    public static new<T extends BigNumArray>(num: T, isSigned?: boolean): (T & BN<T>) {
+        switch (isSigned) {
+            case true: return new (<any>SignedBigNum)(num) as (T & BN<T>);
+            case false: return new (<any>UnsignedBigNum)(num) as (T & BN<T>);
+        }
+        switch (num.constructor) {
+            case Int8Array:
+            case Int16Array:
+            case Int32Array:
+            case BigInt64Array:
+                return new (<any>SignedBigNum)(num) as (T & BN<T>);
+        }
+        if (num.byteLength === 16) {
+            return new (<any>DecimalBigNum)(num) as (T & BN<T>);
+        }
+        return new (<any>UnsignedBigNum)(num) as (T & BN<T>);
+    }
+    /** @nocollapse */
+    public static signed<T extends IntArray>(num: T): (T & BN<T>) {
+        return new (<any>SignedBigNum)(num) as (T & BN<T>);
+    }
+    /** @nocollapse */
+    public static unsigned<T extends UintArray>(num: T): (T & BN<T>) {
+        return new (<any>UnsignedBigNum)(num) as (T & BN<T>);
+    }
+    /** @nocollapse */
+    public static decimal<T extends UintArray>(num: T): (T & BN<T>) {
+        return new (<any>DecimalBigNum)(num) as (T & BN<T>);
+    }
+    constructor(num: T, isSigned?: boolean) {
+        return BN.new(num, isSigned) as any;
+    }
+}
+
+/** @ignore */
+export interface BN<T extends BigNumArray> extends TypedArrayLike<T> {
+
+    new <T extends ArrayBufferViewInput>(buffer: T, signed?: boolean): T;
+
+    readonly signed: boolean;
+    readonly TypedArray: TypedArrayConstructor<TypedArray>;
+    readonly BigIntArray: BigIntArrayConstructor<BigIntArray>;
+
+    [Symbol.toStringTag]:
+    'Int8Array' |
+    'Int16Array' |
+    'Int32Array' |
+    'Uint8Array' |
+    'Uint16Array' |
+    'Uint32Array' |
+    'Uint8ClampedArray';
+
+    /**
+     * Convert the bytes to their (positive) decimal representation for printing
+     */
+    toString(): string;
+    /**
+     * Down-convert the bytes to a 53-bit precision integer. Invoked by JS for
+     * arithmetic operators, like `+`. Easy (and unsafe) way to convert BN to
+     * number via `+bn_inst`
+     */
+    valueOf(): number;
+    /**
+     * Return the JSON representation of the bytes. Must be wrapped in double-quotes,
+     * so it's compatible with JSON.stringify().
+     */
+    toJSON(): string;
+    [Symbol.toPrimitive](hint?: any): number | string | bigint;
+}
+
+/** @ignore */
+interface TypedArrayLike<T extends BigNumArray> {
+
+    readonly length: number;
+    readonly buffer: ArrayBuffer;
+    readonly byteLength: number;
+    readonly byteOffset: number;
+    readonly BYTES_PER_ELEMENT: number;
+
+    includes(searchElement: number, fromIndex?: number | undefined): boolean;
+    copyWithin(target: number, start: number, end?: number | undefined): this;
+    every(callbackfn: (value: number, index: number, array: T) => boolean, thisArg?: any): boolean;
+    fill(value: number, start?: number | undefined, end?: number | undefined): this;
+    filter(callbackfn: (value: number, index: number, array: T) => boolean, thisArg?: any): T;
+    find(predicate: (value: number, index: number, obj: T) => boolean, thisArg?: any): number | undefined;
+    findIndex(predicate: (value: number, index: number, obj: T) => boolean, thisArg?: any): number;
+    forEach(callbackfn: (value: number, index: number, array: T) => void, thisArg?: any): void;
+    indexOf(searchElement: number, fromIndex?: number | undefined): number;
+    join(separator?: string | undefined): string;
+    lastIndexOf(searchElement: number, fromIndex?: number | undefined): number;
+    map(callbackfn: (value: number, index: number, array: T) => number, thisArg?: any): T;
+    reduce(callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: T) => number): number;
+    reduce(callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: T) => number, initialValue: number): number;
+    reduce<U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: T) => U, initialValue: U): U;
+    reduceRight(callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: T) => number): number;
+    reduceRight(callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: T) => number, initialValue: number): number;
+    reduceRight<U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: T) => U, initialValue: U): U;
+    reverse(): T;
+    set(array: ArrayLike<number>, offset?: number | undefined): void;
+    slice(start?: number | undefined, end?: number | undefined): T;
+    some(callbackfn: (value: number, index: number, array: T) => boolean, thisArg?: any): boolean;
+    sort(compareFn?: ((a: number, b: number) => number) | undefined): this;
+    subarray(begin: number, end?: number | undefined): T;
+    toLocaleString(): string;
+    entries(): IterableIterator<[number, number]>;
+    keys(): IterableIterator<number>;
+    values(): IterableIterator<number>;
+}
diff --git a/igv_component/node_modules/apache-arrow/src/util/buffer.ts b/igv_component/node_modules/apache-arrow/src/util/buffer.ts
new file mode 100644
index 0000000000000000000000000000000000000000..33adc4a3923c68d326eff951a6b31a270c8959a7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/util/buffer.ts
@@ -0,0 +1,232 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { encodeUtf8 } from '../util/utf8.js';
+import { TypedArray, TypedArrayConstructor, BigIntArrayConstructor } from '../interfaces.js';
+import { isPromise, isIterable, isAsyncIterable, isIteratorResult, isFlatbuffersByteBuffer, BigInt64Array, BigUint64Array } from './compat.js';
+import { ByteBuffer } from 'flatbuffers';
+
+/** @ignore */
+const SharedArrayBuf = (typeof SharedArrayBuffer !== 'undefined' ? SharedArrayBuffer : ArrayBuffer);
+
+/** @ignore */
+function collapseContiguousByteRanges(chunks: Uint8Array[]) {
+    const result = chunks[0] ? [chunks[0]] : [];
+    let xOffset: number, yOffset: number, xLen: number, yLen: number;
+    for (let x, y, i = 0, j = 0, n = chunks.length; ++i < n;) {
+        x = result[j];
+        y = chunks[i];
+        // continue if x and y don't share the same underlying ArrayBuffer, or if x isn't before y
+        if (!x || !y || x.buffer !== y.buffer || y.byteOffset < x.byteOffset) {
+            y && (result[++j] = y);
+            continue;
+        }
+        ({ byteOffset: xOffset, byteLength: xLen } = x);
+        ({ byteOffset: yOffset, byteLength: yLen } = y);
+        // continue if the byte ranges of x and y aren't contiguous
+        if ((xOffset + xLen) < yOffset || (yOffset + yLen) < xOffset) {
+            y && (result[++j] = y);
+            continue;
+        }
+        result[j] = new Uint8Array(x.buffer, xOffset, yOffset - xOffset + yLen);
+    }
+    return result;
+}
+
+/** @ignore */
+export function memcpy<TTarget extends ArrayBufferView, TSource extends ArrayBufferView>(target: TTarget, source: TSource, targetByteOffset = 0, sourceByteLength = source.byteLength) {
+    const targetByteLength = target.byteLength;
+    const dst = new Uint8Array(target.buffer, target.byteOffset, targetByteLength);
+    const src = new Uint8Array(source.buffer, source.byteOffset, Math.min(sourceByteLength, targetByteLength));
+    dst.set(src, targetByteOffset);
+    return target;
+}
+
+/** @ignore */
+export function joinUint8Arrays(chunks: Uint8Array[], size?: number | null): [Uint8Array, Uint8Array[], number] {
+    // collapse chunks that share the same underlying ArrayBuffer and whose byte ranges overlap,
+    // to avoid unnecessarily copying the bytes to do this buffer join. This is a common case during
+    // streaming, where we may be reading partial byte ranges out of the same underlying ArrayBuffer
+    const result = collapseContiguousByteRanges(chunks);
+    const byteLength = result.reduce((x, b) => x + b.byteLength, 0);
+    let source: Uint8Array, sliced: Uint8Array, buffer: Uint8Array | void;
+    let offset = 0, index = -1;
+    const length = Math.min(size || Number.POSITIVE_INFINITY, byteLength);
+    for (const n = result.length; ++index < n;) {
+        source = result[index];
+        sliced = source.subarray(0, Math.min(source.length, length - offset));
+        if (length <= (offset + sliced.length)) {
+            if (sliced.length < source.length) {
+                result[index] = source.subarray(sliced.length);
+            } else if (sliced.length === source.length) { index++; }
+            buffer ? memcpy(buffer, sliced, offset) : (buffer = sliced);
+            break;
+        }
+        memcpy(buffer || (buffer = new Uint8Array(length)), sliced, offset);
+        offset += sliced.length;
+    }
+    return [buffer || new Uint8Array(0), result.slice(index), byteLength - (buffer ? buffer.byteLength : 0)];
+}
+
+/** @ignore */
+export type ArrayBufferViewInput = ArrayBufferView | ArrayBufferLike | ArrayBufferView | Iterable<number> | ArrayLike<number> | ByteBuffer | string | null | undefined |
+    IteratorResult<ArrayBufferView | ArrayBufferLike | ArrayBufferView | Iterable<number> | ArrayLike<number> | ByteBuffer | string | null | undefined> |
+    ReadableStreamReadResult<ArrayBufferView | ArrayBufferLike | ArrayBufferView | Iterable<number> | ArrayLike<number> | ByteBuffer | string | null | undefined>;
+
+/** @ignore */
+export function toArrayBufferView<
+    T extends TypedArrayConstructor<any> | BigIntArrayConstructor<any>
+>(ArrayBufferViewCtor: any, input: ArrayBufferViewInput): InstanceType<T> {
+
+    let value: any = isIteratorResult(input) ? input.value : input;
+
+    if (value instanceof ArrayBufferViewCtor) {
+        if (ArrayBufferViewCtor === Uint8Array) {
+            // Node's `Buffer` class passes the `instanceof Uint8Array` check, but we need
+            // a real Uint8Array, since Buffer#slice isn't the same as Uint8Array#slice :/
+            return new ArrayBufferViewCtor(value.buffer, value.byteOffset, value.byteLength);
+        }
+        return value;
+    }
+    if (!value) { return new ArrayBufferViewCtor(0); }
+    if (typeof value === 'string') { value = encodeUtf8(value); }
+    if (value instanceof ArrayBuffer) { return new ArrayBufferViewCtor(value); }
+    if (value instanceof SharedArrayBuf) { return new ArrayBufferViewCtor(value); }
+    if (isFlatbuffersByteBuffer(value)) { return toArrayBufferView(ArrayBufferViewCtor, value.bytes()); }
+    return !ArrayBuffer.isView(value) ? ArrayBufferViewCtor.from(value) : (value.byteLength <= 0 ? new ArrayBufferViewCtor(0)
+        : new ArrayBufferViewCtor(value.buffer, value.byteOffset, value.byteLength / ArrayBufferViewCtor.BYTES_PER_ELEMENT));
+}
+
+/** @ignore */ export const toInt8Array = (input: ArrayBufferViewInput) => toArrayBufferView(Int8Array, input);
+/** @ignore */ export const toInt16Array = (input: ArrayBufferViewInput) => toArrayBufferView(Int16Array, input);
+/** @ignore */ export const toInt32Array = (input: ArrayBufferViewInput) => toArrayBufferView(Int32Array, input);
+/** @ignore */ export const toBigInt64Array = (input: ArrayBufferViewInput) => toArrayBufferView(BigInt64Array, input);
+/** @ignore */ export const toUint8Array = (input: ArrayBufferViewInput) => toArrayBufferView(Uint8Array, input);
+/** @ignore */ export const toUint16Array = (input: ArrayBufferViewInput) => toArrayBufferView(Uint16Array, input);
+/** @ignore */ export const toUint32Array = (input: ArrayBufferViewInput) => toArrayBufferView(Uint32Array, input);
+/** @ignore */ export const toBigUint64Array = (input: ArrayBufferViewInput) => toArrayBufferView(BigUint64Array, input);
+/** @ignore */ export const toFloat32Array = (input: ArrayBufferViewInput) => toArrayBufferView(Float32Array, input);
+/** @ignore */ export const toFloat64Array = (input: ArrayBufferViewInput) => toArrayBufferView(Float64Array, input);
+/** @ignore */ export const toUint8ClampedArray = (input: ArrayBufferViewInput) => toArrayBufferView(Uint8ClampedArray, input);
+
+/** @ignore */
+type ArrayBufferViewIteratorInput = Iterable<ArrayBufferViewInput> | ArrayBufferViewInput;
+
+/** @ignore */
+const pump = <T extends Iterator<any> | AsyncIterator<any>>(iterator: T) => { iterator.next(); return iterator; };
+
+/** @ignore */
+export function* toArrayBufferViewIterator<T extends TypedArray>(ArrayCtor: TypedArrayConstructor<T>, source: ArrayBufferViewIteratorInput) {
+    const wrap = function*<T>(x: T) { yield x; };
+    const buffers: Iterable<ArrayBufferViewInput> =
+        (typeof source === 'string') ? wrap(source)
+            : (ArrayBuffer.isView(source)) ? wrap(source)
+                : (source instanceof ArrayBuffer) ? wrap(source)
+                    : (source instanceof SharedArrayBuf) ? wrap(source)
+                        : !isIterable<ArrayBufferViewInput>(source) ? wrap(source) : source;
+
+    yield* pump((function* (it: Iterator<ArrayBufferViewInput, any, number | undefined>): Generator<T, void, number | undefined> {
+        let r: IteratorResult<any> = <any>null;
+        do {
+            r = it.next(yield toArrayBufferView(ArrayCtor, r));
+        } while (!r.done);
+    })(buffers[Symbol.iterator]()));
+    return new ArrayCtor();
+}
+
+/** @ignore */ export const toInt8ArrayIterator = (input: ArrayBufferViewIteratorInput) => toArrayBufferViewIterator(Int8Array, input);
+/** @ignore */ export const toInt16ArrayIterator = (input: ArrayBufferViewIteratorInput) => toArrayBufferViewIterator(Int16Array, input);
+/** @ignore */ export const toInt32ArrayIterator = (input: ArrayBufferViewIteratorInput) => toArrayBufferViewIterator(Int32Array, input);
+/** @ignore */ export const toUint8ArrayIterator = (input: ArrayBufferViewIteratorInput) => toArrayBufferViewIterator(Uint8Array, input);
+/** @ignore */ export const toUint16ArrayIterator = (input: ArrayBufferViewIteratorInput) => toArrayBufferViewIterator(Uint16Array, input);
+/** @ignore */ export const toUint32ArrayIterator = (input: ArrayBufferViewIteratorInput) => toArrayBufferViewIterator(Uint32Array, input);
+/** @ignore */ export const toFloat32ArrayIterator = (input: ArrayBufferViewIteratorInput) => toArrayBufferViewIterator(Float32Array, input);
+/** @ignore */ export const toFloat64ArrayIterator = (input: ArrayBufferViewIteratorInput) => toArrayBufferViewIterator(Float64Array, input);
+/** @ignore */ export const toUint8ClampedArrayIterator = (input: ArrayBufferViewIteratorInput) => toArrayBufferViewIterator(Uint8ClampedArray, input);
+
+/** @ignore */
+type ArrayBufferViewAsyncIteratorInput = AsyncIterable<ArrayBufferViewInput> | Iterable<ArrayBufferViewInput> | PromiseLike<ArrayBufferViewInput> | ArrayBufferViewInput;
+
+/** @ignore */
+export async function* toArrayBufferViewAsyncIterator<T extends TypedArray>(ArrayCtor: TypedArrayConstructor<T>, source: ArrayBufferViewAsyncIteratorInput): AsyncGenerator<T, T, number | undefined> {
+
+    // if a Promise, unwrap the Promise and iterate the resolved value
+    if (isPromise<ArrayBufferViewInput>(source)) {
+        return yield* toArrayBufferViewAsyncIterator(ArrayCtor, await source);
+    }
+
+    const wrap = async function*<T>(x: T) { yield await x; };
+    const emit = async function* <T extends Iterable<any>>(source: T) {
+        yield* pump((function* (it: Iterator<any>) {
+            let r: IteratorResult<any> = <any>null;
+            do {
+                r = it.next(yield r?.value);
+            } while (!r.done);
+        })(source[Symbol.iterator]()));
+    };
+
+    const buffers: AsyncIterable<ArrayBufferViewInput> =
+        (typeof source === 'string') ? wrap(source) // if string, wrap in an AsyncIterableIterator
+            : (ArrayBuffer.isView(source)) ? wrap(source) // if TypedArray, wrap in an AsyncIterableIterator
+                : (source instanceof ArrayBuffer) ? wrap(source) // if ArrayBuffer, wrap in an AsyncIterableIterator
+                    : (source instanceof SharedArrayBuf) ? wrap(source) // if SharedArrayBuffer, wrap in an AsyncIterableIterator
+                        : isIterable<ArrayBufferViewInput>(source) ? emit(source) // If Iterable, wrap in an AsyncIterableIterator and compose the `next` values
+                            : !isAsyncIterable<ArrayBufferViewInput>(source) ? wrap(source) // If not an AsyncIterable, treat as a sentinel and wrap in an AsyncIterableIterator
+                                : source; // otherwise if AsyncIterable, use it
+
+    yield* pump((async function* (it: AsyncIterator<ArrayBufferViewInput, any, number | undefined>): AsyncGenerator<T, void, number | undefined> {
+        let r: IteratorResult<any> = <any>null;
+        do {
+            r = await it.next(yield toArrayBufferView(ArrayCtor, r));
+        } while (!r.done);
+    })(buffers[Symbol.asyncIterator]()));
+    return new ArrayCtor();
+}
+
+/** @ignore */ export const toInt8ArrayAsyncIterator = (input: ArrayBufferViewAsyncIteratorInput) => toArrayBufferViewAsyncIterator(Int8Array, input);
+/** @ignore */ export const toInt16ArrayAsyncIterator = (input: ArrayBufferViewAsyncIteratorInput) => toArrayBufferViewAsyncIterator(Int16Array, input);
+/** @ignore */ export const toInt32ArrayAsyncIterator = (input: ArrayBufferViewAsyncIteratorInput) => toArrayBufferViewAsyncIterator(Int32Array, input);
+/** @ignore */ export const toUint8ArrayAsyncIterator = (input: ArrayBufferViewAsyncIteratorInput) => toArrayBufferViewAsyncIterator(Uint8Array, input);
+/** @ignore */ export const toUint16ArrayAsyncIterator = (input: ArrayBufferViewAsyncIteratorInput) => toArrayBufferViewAsyncIterator(Uint16Array, input);
+/** @ignore */ export const toUint32ArrayAsyncIterator = (input: ArrayBufferViewAsyncIteratorInput) => toArrayBufferViewAsyncIterator(Uint32Array, input);
+/** @ignore */ export const toFloat32ArrayAsyncIterator = (input: ArrayBufferViewAsyncIteratorInput) => toArrayBufferViewAsyncIterator(Float32Array, input);
+/** @ignore */ export const toFloat64ArrayAsyncIterator = (input: ArrayBufferViewAsyncIteratorInput) => toArrayBufferViewAsyncIterator(Float64Array, input);
+/** @ignore */ export const toUint8ClampedArrayAsyncIterator = (input: ArrayBufferViewAsyncIteratorInput) => toArrayBufferViewAsyncIterator(Uint8ClampedArray, input);
+
+/** @ignore */
+export function rebaseValueOffsets(offset: number, length: number, valueOffsets: Int32Array) {
+    // If we have a non-zero offset, create a new offsets array with the values
+    // shifted by the start offset, such that the new start offset is 0
+    if (offset !== 0) {
+        valueOffsets = valueOffsets.slice(0, length + 1);
+        for (let i = -1; ++i <= length;) {
+            valueOffsets[i] += offset;
+        }
+    }
+    return valueOffsets;
+}
+
+/** @ignore */
+export function compareArrayLike<T extends ArrayLike<any>>(a: T, b: T) {
+    let i = 0;
+    const n = a.length;
+    if (n !== b.length) { return false; }
+    if (n > 0) {
+        do { if (a[i] !== b[i]) { return false; } } while (++i < n);
+    }
+    return true;
+}
diff --git a/igv_component/node_modules/apache-arrow/src/util/chunk.ts b/igv_component/node_modules/apache-arrow/src/util/chunk.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6098b04243422f0ff69892af519e2e84d1e5248b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/util/chunk.ts
@@ -0,0 +1,160 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Data } from '../data.js';
+import { DataType } from '../type.js';
+
+/** @ignore */
+export class ChunkedIterator<T extends DataType> implements IterableIterator<T['TValue'] | null> {
+    private chunkIndex = 0;
+    private chunkIterator: IterableIterator<T['TValue'] | null>;
+
+    constructor(
+        private numChunks: number = 0,
+        private getChunkIterator: (chunkIndex: number) => IterableIterator<T['TValue'] | null>
+    ) {
+        this.chunkIterator = this.getChunkIterator(0);
+    }
+
+    next(): IteratorResult<T['TValue'] | null> {
+        while (this.chunkIndex < this.numChunks) {
+            const next = this.chunkIterator.next();
+
+            if (!next.done) {
+                return next;
+            }
+
+            if (++this.chunkIndex < this.numChunks) {
+                this.chunkIterator = this.getChunkIterator(this.chunkIndex);
+            }
+        }
+
+        return { done: true, value: null };
+    }
+
+    [Symbol.iterator]() {
+        return this;
+    }
+}
+
+/** @ignore */
+export function computeChunkNullCounts<T extends DataType>(chunks: ReadonlyArray<Data<T>>) {
+    return chunks.reduce((nullCount, chunk) => nullCount + chunk.nullCount, 0);
+}
+
+/** @ignore */
+export function computeChunkOffsets<T extends DataType>(chunks: ReadonlyArray<Data<T>>) {
+    return chunks.reduce((offsets, chunk, index) => {
+        offsets[index + 1] = offsets[index] + chunk.length;
+        return offsets;
+    }, new Uint32Array(chunks.length + 1));
+}
+
+/** @ignore */
+export function sliceChunks<T extends DataType>(chunks: ReadonlyArray<Data<T>>, offsets: Uint32Array | Array<number>, begin: number, end: number) {
+    const slices: Data<T>[] = [];
+    for (let i = -1, n = chunks.length; ++i < n;) {
+        const chunk = chunks[i];
+        const offset = offsets[i];
+        const { length } = chunk;
+        // Stop if the child is to the right of the slice boundary
+        if (offset >= end) { break; }
+        // Exclude children to the left of of the slice boundary
+        if (begin >= offset + length) { continue; }
+        // Include entire child if between both left and right boundaries
+        if (offset >= begin && (offset + length) <= end) {
+            slices.push(chunk);
+            continue;
+        }
+        // Include the child slice that overlaps one of the slice boundaries
+        const from = Math.max(0, begin - offset);
+        const to = Math.min(end - offset, length);
+        slices.push(chunk.slice(from, to - from));
+    }
+    if (slices.length === 0) {
+        slices.push(chunks[0].slice(0, 0));
+    }
+    return slices;
+}
+
+/** @ignore */
+export function binarySearch<
+    T extends DataType,
+    F extends (chunks: ReadonlyArray<Data<T>>, _1: number, _2: number) => any
+>(chunks: ReadonlyArray<Data<T>>, offsets: Uint32Array | number[], idx: number, fn: F) {
+    let lhs = 0, mid = 0, rhs = offsets.length - 1;
+    do {
+        if (lhs >= rhs - 1) {
+            return (idx < offsets[rhs]) ? fn(chunks, lhs, idx - offsets[lhs]) : null;
+        }
+        mid = lhs + (Math.trunc((rhs - lhs) * .5));
+        idx < offsets[mid] ? (rhs = mid) : (lhs = mid);
+    } while (lhs < rhs);
+}
+
+/** @ignore */
+export function isChunkedValid<T extends DataType>(data: Data<T>, index: number): boolean {
+    return data.getValid(index);
+}
+
+/** @ignore */
+export function wrapChunkedCall1<T extends DataType>(fn: (c: Data<T>, _1: number) => any) {
+    function chunkedFn(chunks: ReadonlyArray<Data<T>>, i: number, j: number) { return fn(chunks[i], j); }
+    return function (this: any, index: number) {
+        const data = this.data as ReadonlyArray<Data<T>>;
+        return binarySearch(data, this._offsets, index, chunkedFn);
+    };
+}
+
+/** @ignore */
+export function wrapChunkedCall2<T extends DataType>(fn: (c: Data<T>, _1: number, _2: any) => any) {
+    let _2: any;
+    function chunkedFn(chunks: ReadonlyArray<Data<T>>, i: number, j: number) { return fn(chunks[i], j, _2); }
+    return function (this: any, index: number, value: any) {
+        const data = this.data as ReadonlyArray<Data<T>>;
+        _2 = value;
+        const result = binarySearch(data, this._offsets, index, chunkedFn);
+        _2 = undefined;
+        return result;
+    };
+}
+
+/** @ignore */
+export function wrapChunkedIndexOf<T extends DataType>(indexOf: (c: Data<T>, e: T['TValue'], o?: number) => any) {
+    let _1: any;
+    function chunkedIndexOf(data: ReadonlyArray<Data<T>>, chunkIndex: number, fromIndex: number) {
+        let begin = fromIndex, index = 0, total = 0;
+        for (let i = chunkIndex - 1, n = data.length; ++i < n;) {
+            const chunk = data[i];
+            if (~(index = indexOf(chunk, _1, begin))) {
+                return total + index;
+            }
+            begin = 0;
+            total += chunk.length;
+        }
+        return -1;
+    }
+    return function (this: any, element: T['TValue'], offset?: number) {
+        _1 = element;
+        const data = this.data as ReadonlyArray<Data<T>>;
+        const result = typeof offset !== 'number'
+            ? chunkedIndexOf(data, 0, 0)
+            : binarySearch(data, this._offsets, offset, chunkedIndexOf);
+        _1 = undefined;
+        return result;
+    };
+}
diff --git a/igv_component/node_modules/apache-arrow/src/util/compat.ts b/igv_component/node_modules/apache-arrow/src/util/compat.ts
new file mode 100644
index 0000000000000000000000000000000000000000..dec75e02e3306c69b9521c88af633918629c0d9a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/util/compat.ts
@@ -0,0 +1,194 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { ReadableInterop, ArrowJSONLike } from '../io/interfaces.js';
+
+/* eslint-disable unicorn/throw-new-error */
+
+/** @ignore */
+type FSReadStream = import('fs').ReadStream;
+/** @ignore */
+type FileHandle = import('fs').promises.FileHandle;
+
+/** @ignore */
+export interface Subscription {
+    unsubscribe: () => void;
+}
+
+/** @ignore */
+export interface Observer<T> {
+    closed?: boolean;
+    next: (value: T) => void;
+    error: (err: any) => void;
+    complete: () => void;
+}
+
+/** @ignore */
+export interface Observable<T> {
+    subscribe: (observer: Observer<T>) => Subscription;
+}
+
+/** @ignore */
+const [BigIntCtor, BigIntAvailable] = (() => {
+    const BigIntUnavailableError = () => { throw new Error('BigInt is not available in this environment'); };
+    function BigIntUnavailable() { throw BigIntUnavailableError(); }
+    BigIntUnavailable.asIntN = () => { throw BigIntUnavailableError(); };
+    BigIntUnavailable.asUintN = () => { throw BigIntUnavailableError(); };
+    return typeof BigInt !== 'undefined' ? [BigInt, true] : [<any>BigIntUnavailable, false];
+})() as [BigIntConstructor, boolean];
+
+/** @ignore */
+const [BigInt64ArrayCtor, BigInt64ArrayAvailable] = (() => {
+    const BigInt64ArrayUnavailableError = () => { throw new Error('BigInt64Array is not available in this environment'); };
+    class BigInt64ArrayUnavailable {
+        static get BYTES_PER_ELEMENT() { return 8; }
+        static of() { throw BigInt64ArrayUnavailableError(); }
+        static from() { throw BigInt64ArrayUnavailableError(); }
+        constructor() { throw BigInt64ArrayUnavailableError(); }
+    }
+    return typeof BigInt64Array !== 'undefined' ? [BigInt64Array, true] : [<any>BigInt64ArrayUnavailable, false];
+})() as [BigInt64ArrayConstructor, boolean];
+
+/** @ignore */
+const [BigUint64ArrayCtor, BigUint64ArrayAvailable] = (() => {
+    const BigUint64ArrayUnavailableError = () => { throw new Error('BigUint64Array is not available in this environment'); };
+    class BigUint64ArrayUnavailable {
+        static get BYTES_PER_ELEMENT() { return 8; }
+        static of() { throw BigUint64ArrayUnavailableError(); }
+        static from() { throw BigUint64ArrayUnavailableError(); }
+        constructor() { throw BigUint64ArrayUnavailableError(); }
+    }
+    return typeof BigUint64Array !== 'undefined' ? [BigUint64Array, true] : [<any>BigUint64ArrayUnavailable, false];
+})() as [BigUint64ArrayConstructor, boolean];
+
+export { BigIntCtor as BigInt, BigIntAvailable };
+export { BigInt64ArrayCtor as BigInt64Array, BigInt64ArrayAvailable };
+export { BigUint64ArrayCtor as BigUint64Array, BigUint64ArrayAvailable };
+
+/** @ignore */ const isNumber = (x: any) => typeof x === 'number';
+/** @ignore */ const isBoolean = (x: any) => typeof x === 'boolean';
+/** @ignore */ const isFunction = (x: any) => typeof x === 'function';
+/** @ignore */
+// eslint-disable-next-line @typescript-eslint/ban-types
+export const isObject = (x: any): x is Object => x != null && Object(x) === x;
+
+/** @ignore */
+export const isPromise = <T = any>(x: any): x is PromiseLike<T> => {
+    return isObject(x) && isFunction(x.then);
+};
+
+/** @ignore */
+export const isObservable = <T = any>(x: any): x is Observable<T> => {
+    return isObject(x) && isFunction(x.subscribe);
+};
+
+/** @ignore */
+export const isIterable = <T = any>(x: any): x is Iterable<T> => {
+    return isObject(x) && isFunction(x[Symbol.iterator]);
+};
+
+/** @ignore */
+export const isAsyncIterable = <T = any>(x: any): x is AsyncIterable<T> => {
+    return isObject(x) && isFunction(x[Symbol.asyncIterator]);
+};
+
+/** @ignore */
+export const isArrowJSON = (x: any): x is ArrowJSONLike => {
+    return isObject(x) && isObject(x['schema']);
+};
+
+/** @ignore */
+export const isArrayLike = <T = any>(x: any): x is ArrayLike<T> => {
+    return isObject(x) && isNumber(x['length']);
+};
+
+/** @ignore */
+export const isIteratorResult = <T = any>(x: any): x is IteratorResult<T> => {
+    return isObject(x) && ('done' in x) && ('value' in x);
+};
+
+/** @ignore */
+export const isUnderlyingSink = <T = any>(x: any): x is UnderlyingSink<T> => {
+    return isObject(x) &&
+        isFunction(x['abort']) &&
+        isFunction(x['close']) &&
+        isFunction(x['start']) &&
+        isFunction(x['write']);
+};
+
+/** @ignore */
+export const isFileHandle = (x: any): x is FileHandle => {
+    return isObject(x) && isFunction(x['stat']) && isNumber(x['fd']);
+};
+
+/** @ignore */
+export const isFSReadStream = (x: any): x is FSReadStream => {
+    return isReadableNodeStream(x) && isNumber((<any>x)['bytesRead']);
+};
+
+/** @ignore */
+export const isFetchResponse = (x: any): x is Response => {
+    return isObject(x) && isReadableDOMStream(x['body']);
+};
+
+const isReadableInterop = <T = any>(x: any): x is ReadableInterop<T> => ('_getDOMStream' in x && '_getNodeStream' in x);
+
+/** @ignore */
+export const isWritableDOMStream = <T = any>(x: any): x is WritableStream<T> => {
+    return isObject(x) &&
+        isFunction(x['abort']) &&
+        isFunction(x['getWriter']) &&
+        !isReadableInterop(x);
+};
+
+/** @ignore */
+export const isReadableDOMStream = <T = any>(x: any): x is ReadableStream<T> => {
+    return isObject(x) &&
+        isFunction(x['cancel']) &&
+        isFunction(x['getReader']) &&
+        !isReadableInterop(x);
+};
+
+/** @ignore */
+export const isWritableNodeStream = (x: any): x is NodeJS.WritableStream => {
+    return isObject(x) &&
+        isFunction(x['end']) &&
+        isFunction(x['write']) &&
+        isBoolean(x['writable']) &&
+        !isReadableInterop(x);
+};
+
+/** @ignore */
+export const isReadableNodeStream = (x: any): x is NodeJS.ReadableStream => {
+    return isObject(x) &&
+        isFunction(x['read']) &&
+        isFunction(x['pipe']) &&
+        isBoolean(x['readable']) &&
+        !isReadableInterop(x);
+};
+
+/** @ignore */
+export const isFlatbuffersByteBuffer = (x: any): x is import('flatbuffers').ByteBuffer => {
+    return isObject(x) &&
+        isFunction(x['clear']) &&
+        isFunction(x['bytes']) &&
+        isFunction(x['position']) &&
+        isFunction(x['setPosition']) &&
+        isFunction(x['capacity']) &&
+        isFunction(x['getBufferIdentifier']) &&
+        isFunction(x['createLong']);
+};
diff --git a/igv_component/node_modules/apache-arrow/src/util/int.ts b/igv_component/node_modules/apache-arrow/src/util/int.ts
new file mode 100644
index 0000000000000000000000000000000000000000..53ee7e9a9558b0275143930c2ba64ae3e5b09bbe
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/util/int.ts
@@ -0,0 +1,444 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+/** @ignore */
+const carryBit16 = 1 << 16;
+
+/** @ignore */
+function intAsHex(value: number): string {
+    if (value < 0) {
+        value = 0xFFFFFFFF + value + 1;
+    }
+    return `0x${value.toString(16)}`;
+}
+
+/** @ignore */
+const kInt32DecimalDigits = 8;
+/** @ignore */
+const kPowersOfTen = [
+    1,
+    10,
+    100,
+    1000,
+    10000,
+    100000,
+    1000000,
+    10000000,
+    100000000
+];
+
+/** @ignore */
+export class BaseInt64 {
+    constructor(protected buffer: Uint32Array) { }
+
+    public high(): number { return this.buffer[1]; }
+    public low(): number { return this.buffer[0]; }
+
+    protected _times(other: BaseInt64) {
+        // Break the left and right numbers into 16 bit chunks
+        // so that we can multiply them without overflow.
+        const L = new Uint32Array([
+            this.buffer[1] >>> 16,
+            this.buffer[1] & 0xFFFF,
+            this.buffer[0] >>> 16,
+            this.buffer[0] & 0xFFFF
+        ]);
+
+        const R = new Uint32Array([
+            other.buffer[1] >>> 16,
+            other.buffer[1] & 0xFFFF,
+            other.buffer[0] >>> 16,
+            other.buffer[0] & 0xFFFF
+        ]);
+
+        let product = L[3] * R[3];
+        this.buffer[0] = product & 0xFFFF;
+
+        let sum = product >>> 16;
+
+        product = L[2] * R[3];
+        sum += product;
+
+        product = (L[3] * R[2]) >>> 0;
+        sum += product;
+
+        this.buffer[0] += sum << 16;
+
+        this.buffer[1] = (sum >>> 0 < product ? carryBit16 : 0);
+
+        this.buffer[1] += sum >>> 16;
+        this.buffer[1] += L[1] * R[3] + L[2] * R[2] + L[3] * R[1];
+        this.buffer[1] += (L[0] * R[3] + L[1] * R[2] + L[2] * R[1] + L[3] * R[0]) << 16;
+
+        return this;
+    }
+
+    protected _plus(other: BaseInt64) {
+        const sum = (this.buffer[0] + other.buffer[0]) >>> 0;
+        this.buffer[1] += other.buffer[1];
+        if (sum < (this.buffer[0] >>> 0)) {
+            ++this.buffer[1];
+        }
+        this.buffer[0] = sum;
+    }
+
+    public lessThan(other: BaseInt64): boolean {
+        return this.buffer[1] < other.buffer[1] ||
+            (this.buffer[1] === other.buffer[1] && this.buffer[0] < other.buffer[0]);
+    }
+
+    public equals(other: BaseInt64): boolean {
+        return this.buffer[1] === other.buffer[1] && this.buffer[0] == other.buffer[0];
+    }
+
+    public greaterThan(other: BaseInt64): boolean {
+        return other.lessThan(this);
+    }
+
+    public hex(): string {
+        return `${intAsHex(this.buffer[1])} ${intAsHex(this.buffer[0])}`;
+    }
+}
+
+/** @ignore */
+export class Uint64 extends BaseInt64 {
+    public times(other: Uint64): Uint64 {
+        this._times(other);
+        return this;
+    }
+
+    public plus(other: Uint64): Uint64 {
+        this._plus(other);
+        return this;
+    }
+
+    /** @nocollapse */
+    public static from(val: any, out_buffer = new Uint32Array(2)): Uint64 {
+        return Uint64.fromString(
+            typeof (val) === 'string' ? val : val.toString(),
+            out_buffer
+        );
+    }
+
+    /** @nocollapse */
+    public static fromNumber(num: number, out_buffer = new Uint32Array(2)): Uint64 {
+        // Always parse numbers as strings - pulling out high and low bits
+        // directly seems to lose precision sometimes
+        // For example:
+        //     > -4613034156400212000 >>> 0
+        //     721782784
+        // The correct lower 32-bits are 721782752
+        return Uint64.fromString(num.toString(), out_buffer);
+    }
+
+    /** @nocollapse */
+    public static fromString(str: string, out_buffer = new Uint32Array(2)): Uint64 {
+        const length = str.length;
+
+        const out = new Uint64(out_buffer);
+        for (let posn = 0; posn < length;) {
+            const group = kInt32DecimalDigits < length - posn ?
+                kInt32DecimalDigits : length - posn;
+            const chunk = new Uint64(new Uint32Array([Number.parseInt(str.slice(posn, posn + group), 10), 0]));
+            const multiple = new Uint64(new Uint32Array([kPowersOfTen[group], 0]));
+
+            out.times(multiple);
+            out.plus(chunk);
+
+            posn += group;
+        }
+
+        return out;
+    }
+
+    /** @nocollapse */
+    public static convertArray(values: (string | number)[]): Uint32Array {
+        const data = new Uint32Array(values.length * 2);
+        for (let i = -1, n = values.length; ++i < n;) {
+            Uint64.from(values[i], new Uint32Array(data.buffer, data.byteOffset + 2 * i * 4, 2));
+        }
+        return data;
+    }
+
+    /** @nocollapse */
+    public static multiply(left: Uint64, right: Uint64): Uint64 {
+        const rtrn = new Uint64(new Uint32Array(left.buffer));
+        return rtrn.times(right);
+    }
+
+    /** @nocollapse */
+    public static add(left: Uint64, right: Uint64): Uint64 {
+        const rtrn = new Uint64(new Uint32Array(left.buffer));
+        return rtrn.plus(right);
+    }
+}
+
+/** @ignore */
+export class Int64 extends BaseInt64 {
+    public negate(): Int64 {
+        this.buffer[0] = ~this.buffer[0] + 1;
+        this.buffer[1] = ~this.buffer[1];
+
+        if (this.buffer[0] == 0) { ++this.buffer[1]; }
+        return this;
+    }
+
+    public times(other: Int64): Int64 {
+        this._times(other);
+        return this;
+    }
+
+    public plus(other: Int64): Int64 {
+        this._plus(other);
+        return this;
+    }
+
+    public lessThan(other: Int64): boolean {
+        // force high bytes to be signed
+        // eslint-disable-next-line unicorn/prefer-math-trunc
+        const this_high = this.buffer[1] << 0;
+        // eslint-disable-next-line unicorn/prefer-math-trunc
+        const other_high = other.buffer[1] << 0;
+        return this_high < other_high ||
+            (this_high === other_high && this.buffer[0] < other.buffer[0]);
+    }
+
+    /** @nocollapse */
+    public static from(val: any, out_buffer = new Uint32Array(2)): Int64 {
+        return Int64.fromString(
+            typeof (val) === 'string' ? val : val.toString(),
+            out_buffer
+        );
+    }
+
+    /** @nocollapse */
+    public static fromNumber(num: number, out_buffer = new Uint32Array(2)): Int64 {
+        // Always parse numbers as strings - pulling out high and low bits
+        // directly seems to lose precision sometimes
+        // For example:
+        //     > -4613034156400212000 >>> 0
+        //     721782784
+        // The correct lower 32-bits are 721782752
+        return Int64.fromString(num.toString(), out_buffer);
+    }
+
+    /** @nocollapse */
+    public static fromString(str: string, out_buffer = new Uint32Array(2)): Int64 {
+        // TODO: Assert that out_buffer is 0 and length = 2
+        const negate = str.startsWith('-');
+        const length = str.length;
+
+        const out = new Int64(out_buffer);
+        for (let posn = negate ? 1 : 0; posn < length;) {
+            const group = kInt32DecimalDigits < length - posn ?
+                kInt32DecimalDigits : length - posn;
+            const chunk = new Int64(new Uint32Array([Number.parseInt(str.slice(posn, posn + group), 10), 0]));
+            const multiple = new Int64(new Uint32Array([kPowersOfTen[group], 0]));
+
+            out.times(multiple);
+            out.plus(chunk);
+
+            posn += group;
+        }
+        return negate ? out.negate() : out;
+    }
+
+    /** @nocollapse */
+    public static convertArray(values: (string | number)[]): Uint32Array {
+        const data = new Uint32Array(values.length * 2);
+        for (let i = -1, n = values.length; ++i < n;) {
+            Int64.from(values[i], new Uint32Array(data.buffer, data.byteOffset + 2 * i * 4, 2));
+        }
+        return data;
+    }
+
+    /** @nocollapse */
+    public static multiply(left: Int64, right: Int64): Int64 {
+        const rtrn = new Int64(new Uint32Array(left.buffer));
+        return rtrn.times(right);
+    }
+
+    /** @nocollapse */
+    public static add(left: Int64, right: Int64): Int64 {
+        const rtrn = new Int64(new Uint32Array(left.buffer));
+        return rtrn.plus(right);
+    }
+}
+
+/** @ignore */
+export class Int128 {
+    constructor(private buffer: Uint32Array) {
+        // buffer[3] MSB (high)
+        // buffer[2]
+        // buffer[1]
+        // buffer[0] LSB (low)
+    }
+
+    public high(): Int64 {
+        return new Int64(new Uint32Array(this.buffer.buffer, this.buffer.byteOffset + 8, 2));
+    }
+
+    public low(): Int64 {
+        return new Int64(new Uint32Array(this.buffer.buffer, this.buffer.byteOffset, 2));
+    }
+
+    public negate(): Int128 {
+        this.buffer[0] = ~this.buffer[0] + 1;
+        this.buffer[1] = ~this.buffer[1];
+        this.buffer[2] = ~this.buffer[2];
+        this.buffer[3] = ~this.buffer[3];
+
+        if (this.buffer[0] == 0) { ++this.buffer[1]; }
+        if (this.buffer[1] == 0) { ++this.buffer[2]; }
+        if (this.buffer[2] == 0) { ++this.buffer[3]; }
+        return this;
+    }
+
+    public times(other: Int128): Int128 {
+        // Break the left and right numbers into 32 bit chunks
+        // so that we can multiply them without overflow.
+        const L0 = new Uint64(new Uint32Array([this.buffer[3], 0]));
+        const L1 = new Uint64(new Uint32Array([this.buffer[2], 0]));
+        const L2 = new Uint64(new Uint32Array([this.buffer[1], 0]));
+        const L3 = new Uint64(new Uint32Array([this.buffer[0], 0]));
+
+        const R0 = new Uint64(new Uint32Array([other.buffer[3], 0]));
+        const R1 = new Uint64(new Uint32Array([other.buffer[2], 0]));
+        const R2 = new Uint64(new Uint32Array([other.buffer[1], 0]));
+        const R3 = new Uint64(new Uint32Array([other.buffer[0], 0]));
+
+        let product = Uint64.multiply(L3, R3);
+        this.buffer[0] = product.low();
+
+        const sum = new Uint64(new Uint32Array([product.high(), 0]));
+
+        product = Uint64.multiply(L2, R3);
+        sum.plus(product);
+
+        product = Uint64.multiply(L3, R2);
+        sum.plus(product);
+
+        this.buffer[1] = sum.low();
+
+        this.buffer[3] = (sum.lessThan(product) ? 1 : 0);
+
+        this.buffer[2] = sum.high();
+        const high = new Uint64(new Uint32Array(this.buffer.buffer, this.buffer.byteOffset + 8, 2));
+
+        high.plus(Uint64.multiply(L1, R3))
+            .plus(Uint64.multiply(L2, R2))
+            .plus(Uint64.multiply(L3, R1));
+        this.buffer[3] += Uint64.multiply(L0, R3)
+            .plus(Uint64.multiply(L1, R2))
+            .plus(Uint64.multiply(L2, R1))
+            .plus(Uint64.multiply(L3, R0)).low();
+
+        return this;
+    }
+
+    public plus(other: Int128): Int128 {
+        const sums = new Uint32Array(4);
+        sums[3] = (this.buffer[3] + other.buffer[3]) >>> 0;
+        sums[2] = (this.buffer[2] + other.buffer[2]) >>> 0;
+        sums[1] = (this.buffer[1] + other.buffer[1]) >>> 0;
+        sums[0] = (this.buffer[0] + other.buffer[0]) >>> 0;
+
+        if (sums[0] < (this.buffer[0] >>> 0)) {
+            ++sums[1];
+        }
+        if (sums[1] < (this.buffer[1] >>> 0)) {
+            ++sums[2];
+        }
+        if (sums[2] < (this.buffer[2] >>> 0)) {
+            ++sums[3];
+        }
+
+        this.buffer[3] = sums[3];
+        this.buffer[2] = sums[2];
+        this.buffer[1] = sums[1];
+        this.buffer[0] = sums[0];
+
+        return this;
+    }
+
+    public hex(): string {
+        return `${intAsHex(this.buffer[3])} ${intAsHex(this.buffer[2])} ${intAsHex(this.buffer[1])} ${intAsHex(this.buffer[0])}`;
+    }
+
+    /** @nocollapse */
+    public static multiply(left: Int128, right: Int128): Int128 {
+        const rtrn = new Int128(new Uint32Array(left.buffer));
+        return rtrn.times(right);
+    }
+
+    /** @nocollapse */
+    public static add(left: Int128, right: Int128): Int128 {
+        const rtrn = new Int128(new Uint32Array(left.buffer));
+        return rtrn.plus(right);
+    }
+
+    /** @nocollapse */
+    public static from(val: any, out_buffer = new Uint32Array(4)): Int128 {
+        return Int128.fromString(
+            typeof (val) === 'string' ? val : val.toString(),
+            out_buffer
+        );
+    }
+
+    /** @nocollapse */
+    public static fromNumber(num: number, out_buffer = new Uint32Array(4)): Int128 {
+        // Always parse numbers as strings - pulling out high and low bits
+        // directly seems to lose precision sometimes
+        // For example:
+        //     > -4613034156400212000 >>> 0
+        //     721782784
+        // The correct lower 32-bits are 721782752
+        return Int128.fromString(num.toString(), out_buffer);
+    }
+
+    /** @nocollapse */
+    public static fromString(str: string, out_buffer = new Uint32Array(4)): Int128 {
+        // TODO: Assert that out_buffer is 0 and length = 4
+        const negate = str.startsWith('-');
+        const length = str.length;
+
+        const out = new Int128(out_buffer);
+        for (let posn = negate ? 1 : 0; posn < length;) {
+            const group = kInt32DecimalDigits < length - posn ?
+                kInt32DecimalDigits : length - posn;
+            const chunk = new Int128(new Uint32Array([Number.parseInt(str.slice(posn, posn + group), 10), 0, 0, 0]));
+            const multiple = new Int128(new Uint32Array([kPowersOfTen[group], 0, 0, 0]));
+
+            out.times(multiple);
+            out.plus(chunk);
+
+            posn += group;
+        }
+
+        return negate ? out.negate() : out;
+    }
+
+    /** @nocollapse */
+    public static convertArray(values: (string | number)[]): Uint32Array {
+        // TODO: Distinguish between string and number at compile-time
+        const data = new Uint32Array(values.length * 4);
+        for (let i = -1, n = values.length; ++i < n;) {
+            Int128.from(values[i], new Uint32Array(data.buffer, data.byteOffset + 4 * 4 * i, 4));
+        }
+        return data;
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/util/math.ts b/igv_component/node_modules/apache-arrow/src/util/math.ts
new file mode 100644
index 0000000000000000000000000000000000000000..f6972a88836362fa2e051f6c49bda8da993d5022
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/util/math.ts
@@ -0,0 +1,105 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+const f64 = new Float64Array(1);
+const u32 = new Uint32Array(f64.buffer);
+
+/**
+ * Convert uint16 (logically a float16) to a JS float64. Inspired by numpy's `npy_half_to_double`:
+ * https://github.com/numpy/numpy/blob/5a5987291dc95376bb098be8d8e5391e89e77a2c/numpy/core/src/npymath/halffloat.c#L29
+ * @param h {number} the uint16 to convert
+ * @private
+ * @ignore
+ */
+export function uint16ToFloat64(h: number) {
+    const expo = (h & 0x7C00) >> 10;
+    const sigf = (h & 0x03FF) / 1024;
+    const sign = (-1) ** ((h & 0x8000) >> 15);
+    switch (expo) {
+        case 0x1F: return sign * (sigf ? Number.NaN : 1 / 0);
+        case 0x00: return sign * (sigf ? 6.103515625e-5 * sigf : 0);
+    }
+    return sign * (2 ** (expo - 15)) * (1 + sigf);
+}
+
+/**
+ * Convert a float64 to uint16 (assuming the float64 is logically a float16). Inspired by numpy's `npy_double_to_half`:
+ * https://github.com/numpy/numpy/blob/5a5987291dc95376bb098be8d8e5391e89e77a2c/numpy/core/src/npymath/halffloat.c#L43
+ * @param d {number} The float64 to convert
+ * @private
+ * @ignore
+ */
+export function float64ToUint16(d: number) {
+
+    if (d !== d) { return 0x7E00; } // NaN
+
+    f64[0] = d;
+
+    // Magic numbers:
+    // 0x80000000 = 10000000 00000000 00000000 00000000 -- masks the 32nd bit
+    // 0x7ff00000 = 01111111 11110000 00000000 00000000 -- masks the 21st-31st bits
+    // 0x000fffff = 00000000 00001111 11111111 11111111 -- masks the 1st-20th bit
+
+    const sign = (u32[1] & 0x80000000) >> 16 & 0xFFFF;
+    let expo = (u32[1] & 0x7FF00000), sigf = 0x0000;
+
+    if (expo >= 0x40F00000) {
+        //
+        // If exponent overflowed, the float16 is either NaN or Infinity.
+        // Rules to propagate the sign bit: mantissa > 0 ? NaN : +/-Infinity
+        //
+        // Magic numbers:
+        // 0x40F00000 = 01000000 11110000 00000000 00000000 -- 6-bit exponent overflow
+        // 0x7C000000 = 01111100 00000000 00000000 00000000 -- masks the 27th-31st bits
+        //
+        // returns:
+        // qNaN, aka 32256 decimal, 0x7E00 hex, or 01111110 00000000 binary
+        // sNaN, aka 32000 decimal, 0x7D00 hex, or 01111101 00000000 binary
+        // +inf, aka 31744 decimal, 0x7C00 hex, or 01111100 00000000 binary
+        // -inf, aka 64512 decimal, 0xFC00 hex, or 11111100 00000000 binary
+        //
+        // If mantissa is greater than 23 bits, set to +Infinity like numpy
+        if (u32[0] > 0) {
+            expo = 0x7C00;
+        } else {
+            expo = (expo & 0x7C000000) >> 16;
+            sigf = (u32[1] & 0x000FFFFF) >> 10;
+        }
+    } else if (expo <= 0x3F000000) {
+        //
+        // If exponent underflowed, the float is either signed zero or subnormal.
+        //
+        // Magic numbers:
+        // 0x3F000000 = 00111111 00000000 00000000 00000000 -- 6-bit exponent underflow
+        //
+        sigf = 0x100000 + (u32[1] & 0x000FFFFF);
+        sigf = 0x100000 + (sigf << ((expo >> 20) - 998)) >> 21;
+        expo = 0;
+    } else {
+        //
+        // No overflow or underflow, rebase the exponent and round the mantissa
+        // Magic numbers:
+        // 0x200 = 00000010 00000000 -- masks off the 10th bit
+        //
+
+        // Ensure the first mantissa bit (the 10th one) is 1 and round
+        expo = (expo - 0x3F000000) >> 10;
+        sigf = ((u32[1] & 0x000FFFFF) + 0x200) >> 10;
+    }
+
+    return sign | expo | sigf & 0xFFFF;
+}
diff --git a/igv_component/node_modules/apache-arrow/src/util/pretty.ts b/igv_component/node_modules/apache-arrow/src/util/pretty.ts
new file mode 100644
index 0000000000000000000000000000000000000000..de1b77c09a61fa58093ad0d96e6bdc9e8088636d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/util/pretty.ts
@@ -0,0 +1,45 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { BigInt64Array, BigUint64Array } from './compat.js';
+
+/** @ignore */ const undf = void (0);
+
+/** @ignore */
+export function valueToString(x: any): string {
+    if (x === null) { return 'null'; }
+    if (x === undf) { return 'undefined'; }
+    switch (typeof x) {
+        case 'number': return `${x}`;
+        case 'bigint': return `${x}`;
+        case 'string': return `"${x}"`;
+    }
+    // If [Symbol.toPrimitive] is implemented (like in BN)
+    // use it instead of JSON.stringify(). This ensures we
+    // print BigInts, Decimals, and Binary in their native
+    // representation
+    if (typeof x[Symbol.toPrimitive] === 'function') {
+        return x[Symbol.toPrimitive]('string');
+    }
+    if (ArrayBuffer.isView(x)) {
+        if (x instanceof BigInt64Array || x instanceof BigUint64Array) {
+            return `[${[...x].map(x => valueToString(x))}]`;
+        }
+        return `[${x}]`;
+    }
+    return ArrayBuffer.isView(x) ? `[${x}]` : JSON.stringify(x, (_, y) => typeof y === 'bigint' ? `${y}` : y);
+}
diff --git a/igv_component/node_modules/apache-arrow/src/util/recordbatch.ts b/igv_component/node_modules/apache-arrow/src/util/recordbatch.ts
new file mode 100644
index 0000000000000000000000000000000000000000..47108c2fa982c76fd0db55c71f7453ffc61794fc
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/util/recordbatch.ts
@@ -0,0 +1,100 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Vector } from '../vector.js';
+import { Data, makeData } from '../data.js';
+import { Struct, TypeMap } from '../type.js';
+import { Schema, Field } from '../schema.js';
+import { RecordBatch } from '../recordbatch.js';
+
+/** @ignore */
+export function distributeVectorsIntoRecordBatches<T extends TypeMap = any>(schema: Schema<T>, vecs: Vector<T[keyof T]>[]): [Schema<T>, RecordBatch<T>[]] {
+    return uniformlyDistributeChunksAcrossRecordBatches<T>(schema, vecs.map((v) => v.data.concat()));
+}
+
+/** @ignore */
+function uniformlyDistributeChunksAcrossRecordBatches<T extends TypeMap = any>(schema: Schema<T>, cols: Data<T[keyof T]>[][]): [Schema<T>, RecordBatch<T>[]] {
+
+    const fields = [...schema.fields];
+    const batches = [] as Data<Struct<T>>[];
+    const memo = { numBatches: cols.reduce((n, c) => Math.max(n, c.length), 0) };
+
+    let numBatches = 0, batchLength = 0;
+    let i = -1;
+    const numColumns = cols.length;
+    let child: Data<T[keyof T]>, children: Data<T[keyof T]>[] = [];
+
+    while (memo.numBatches-- > 0) {
+
+        for (batchLength = Number.POSITIVE_INFINITY, i = -1; ++i < numColumns;) {
+            children[i] = child = cols[i].shift()!;
+            batchLength = Math.min(batchLength, child ? child.length : batchLength);
+        }
+
+        if (Number.isFinite(batchLength)) {
+            children = distributeChildren(fields, batchLength, children, cols, memo);
+            if (batchLength > 0) {
+                batches[numBatches++] = makeData({
+                    type: new Struct(fields),
+                    length: batchLength,
+                    nullCount: 0,
+                    children: children.slice()
+                });
+            }
+        }
+    }
+
+    return [
+        schema = schema.assign(fields),
+        batches.map((data) => new RecordBatch(schema, data))
+    ];
+}
+
+/** @ignore */
+function distributeChildren<T extends TypeMap = any>(
+    fields: Field<T[keyof T]>[],
+    batchLength: number,
+    children: Data<T[keyof T]>[],
+    columns: Data<T[keyof T]>[][],
+    memo: { numBatches: number }
+) {
+    const nullBitmapSize = ((batchLength + 63) & ~63) >> 3;
+    for (let i = -1, n = columns.length; ++i < n;) {
+        const child = children[i];
+        const length = child?.length;
+        if (length >= batchLength) {
+            if (length === batchLength) {
+                children[i] = child;
+            } else {
+                children[i] = child.slice(0, batchLength);
+                memo.numBatches = Math.max(memo.numBatches, columns[i].unshift(
+                    child.slice(batchLength, length - batchLength)
+                ));
+            }
+        } else {
+            const field = fields[i];
+            fields[i] = field.clone({ nullable: true });
+            children[i] = child?._changeLengthAndBackfillNullBitmap(batchLength) ?? makeData({
+                type: field.type,
+                length: batchLength,
+                nullCount: batchLength,
+                nullBitmap: new Uint8Array(nullBitmapSize)
+            }) as Data<T[keyof T]>;
+        }
+    }
+    return children;
+}
diff --git a/igv_component/node_modules/apache-arrow/src/util/utf8.ts b/igv_component/node_modules/apache-arrow/src/util/utf8.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b6f8fcdb8242e0d7ceda1435b99690a8f46fc17d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/util/utf8.ts
@@ -0,0 +1,24 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+const decoder = new TextDecoder('utf-8');
+/** @ignore */
+export const decodeUtf8 = (buffer?: BufferSource) => decoder.decode(buffer);
+
+const encoder = new TextEncoder();
+/** @ignore */
+export const encodeUtf8 = (value?: string) => encoder.encode(value);
diff --git a/igv_component/node_modules/apache-arrow/src/util/vector.ts b/igv_component/node_modules/apache-arrow/src/util/vector.ts
new file mode 100644
index 0000000000000000000000000000000000000000..179b17a39f3f39ebe0f5fe416ddf61c0a00c034f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/util/vector.ts
@@ -0,0 +1,196 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Vector } from '../vector.js';
+import { MapRow } from '../row/map.js';
+import { StructRow } from '../row/struct.js';
+import { compareArrayLike } from '../util/buffer.js';
+
+/** @ignore */
+type RangeLike = { length: number; stride?: number };
+/** @ignore */
+type ClampThen<T extends RangeLike> = (source: T, index: number) => any;
+/** @ignore */
+type ClampRangeThen<T extends RangeLike> = (source: T, offset: number, length: number) => any;
+
+export function clampIndex<T extends RangeLike>(source: T, index: number): number;
+export function clampIndex<T extends RangeLike, N extends ClampThen<T> = ClampThen<T>>(source: T, index: number, then: N): ReturnType<N>;
+/** @ignore */
+export function clampIndex<T extends RangeLike, N extends ClampThen<T> = ClampThen<T>>(source: T, index: number, then?: N) {
+    const length = source.length;
+    const adjust = index > -1 ? index : (length + (index % length));
+    return then ? then(source, adjust) : adjust;
+}
+
+/** @ignore */
+let tmp: number;
+export function clampRange<T extends RangeLike>(source: T, begin: number | undefined, end: number | undefined): [number, number];
+export function clampRange<T extends RangeLike, N extends ClampRangeThen<T> = ClampRangeThen<T>>(source: T, begin: number | undefined, end: number | undefined, then: N): ReturnType<N>;
+/** @ignore */
+export function clampRange<T extends RangeLike, N extends ClampRangeThen<T> = ClampRangeThen<T>>(source: T, begin: number | undefined, end: number | undefined, then?: N) {
+
+    // Adjust args similar to Array.prototype.slice. Normalize begin/end to
+    // clamp between 0 and length, and wrap around on negative indices, e.g.
+    // slice(-1, 5) or slice(5, -1)
+    const { length: len = 0 } = source;
+    let lhs = typeof begin !== 'number' ? 0 : begin;
+    let rhs = typeof end !== 'number' ? len : end;
+    // wrap around on negative start/end positions
+    (lhs < 0) && (lhs = ((lhs % len) + len) % len);
+    (rhs < 0) && (rhs = ((rhs % len) + len) % len);
+    // ensure lhs <= rhs
+    (rhs < lhs) && (tmp = lhs, lhs = rhs, rhs = tmp);
+    // ensure rhs <= length
+    (rhs > len) && (rhs = len);
+
+    return then ? then(source, lhs, rhs) : [lhs, rhs];
+}
+
+const isNaNFast = (value: any) => value !== value;
+
+/** @ignore */
+export function createElementComparator(search: any) {
+    const typeofSearch = typeof search;
+    // Compare primitives
+    if (typeofSearch !== 'object' || search === null) {
+        // Compare NaN
+        if (isNaNFast(search)) {
+            return isNaNFast;
+        }
+        return (value: any) => value === search;
+    }
+    // Compare Dates
+    if (search instanceof Date) {
+        const valueOfSearch = search.valueOf();
+        return (value: any) => value instanceof Date ? (value.valueOf() === valueOfSearch) : false;
+    }
+    // Compare TypedArrays
+    if (ArrayBuffer.isView(search)) {
+        return (value: any) => value ? compareArrayLike(search, value) : false;
+    }
+    // Compare Maps and Rows
+    if (search instanceof Map) { return createMapComparator(search); }
+    // Compare Array-likes
+    if (Array.isArray(search)) { return createArrayLikeComparator(search); }
+    // Compare Vectors
+    if (search instanceof Vector) { return createVectorComparator(search); }
+    return createObjectComparator(search, true);
+    // Compare non-empty Objects
+    // return createObjectComparator(search, search instanceof Proxy);
+}
+
+/** @ignore */
+function createArrayLikeComparator(lhs: ArrayLike<any>) {
+    const comparators = [] as ((x: any) => boolean)[];
+    for (let i = -1, n = lhs.length; ++i < n;) {
+        comparators[i] = createElementComparator(lhs[i]);
+    }
+    return createSubElementsComparator(comparators);
+}
+
+/** @ignore */
+function createMapComparator(lhs: Map<any, any>) {
+    let i = -1;
+    const comparators = [] as ((x: any) => boolean)[];
+    for (const v of lhs.values()) comparators[++i] = createElementComparator(v);
+    return createSubElementsComparator(comparators);
+}
+
+/** @ignore */
+function createVectorComparator(lhs: Vector<any>) {
+    const comparators = [] as ((x: any) => boolean)[];
+    for (let i = -1, n = lhs.length; ++i < n;) {
+        comparators[i] = createElementComparator(lhs.get(i));
+    }
+    return createSubElementsComparator(comparators);
+}
+
+/** @ignore */
+function createObjectComparator(lhs: any, allowEmpty = false) {
+    const keys = Object.keys(lhs);
+    // Only compare non-empty Objects
+    if (!allowEmpty && keys.length === 0) { return () => false; }
+    const comparators = [] as ((x: any) => boolean)[];
+    for (let i = -1, n = keys.length; ++i < n;) {
+        comparators[i] = createElementComparator(lhs[keys[i]]);
+    }
+    return createSubElementsComparator(comparators, keys);
+}
+
+function createSubElementsComparator(comparators: ((x: any) => boolean)[], keys?: Iterable<string>) {
+    return (rhs: any) => {
+        if (!rhs || typeof rhs !== 'object') {
+            return false;
+        }
+        switch (rhs.constructor) {
+            case Array: return compareArray(comparators, rhs);
+            case Map:
+                return compareObject(comparators, rhs, rhs.keys());
+            case MapRow:
+            case StructRow:
+            case Object:
+            case undefined: // support `Object.create(null)` objects
+                return compareObject(comparators, rhs, keys || Object.keys(rhs));
+        }
+        return rhs instanceof Vector ? compareVector(comparators, rhs) : false;
+    };
+}
+
+function compareArray(comparators: ((x: any) => boolean)[], arr: any[]) {
+    const n = comparators.length;
+    if (arr.length !== n) { return false; }
+    for (let i = -1; ++i < n;) {
+        if (!(comparators[i](arr[i]))) { return false; }
+    }
+    return true;
+}
+
+function compareVector(comparators: ((x: any) => boolean)[], vec: Vector) {
+    const n = comparators.length;
+    if (vec.length !== n) { return false; }
+    for (let i = -1; ++i < n;) {
+        if (!(comparators[i](vec.get(i)))) { return false; }
+    }
+    return true;
+}
+
+function compareObject(comparators: ((x: any) => boolean)[], obj: Map<any, any>, keys: Iterable<string>) {
+
+    const lKeyItr = keys[Symbol.iterator]();
+    const rKeyItr = obj instanceof Map ? obj.keys() : Object.keys(obj)[Symbol.iterator]();
+    const rValItr = obj instanceof Map ? obj.values() : Object.values(obj)[Symbol.iterator]();
+
+    let i = 0;
+    const n = comparators.length;
+    let rVal = rValItr.next();
+    let lKey = lKeyItr.next();
+    let rKey = rKeyItr.next();
+
+    for (; i < n && !lKey.done && !rKey.done && !rVal.done;
+        ++i, lKey = lKeyItr.next(), rKey = rKeyItr.next(), rVal = rValItr.next()) {
+        if (lKey.value !== rKey.value || !comparators[i](rVal.value)) {
+            break;
+        }
+    }
+    if (i === n && lKey.done && rKey.done && rVal.done) {
+        return true;
+    }
+    lKeyItr.return && lKeyItr.return();
+    rKeyItr.return && rKeyItr.return();
+    rValItr.return && rValItr.return();
+    return false;
+}
diff --git a/igv_component/node_modules/apache-arrow/src/vector.ts b/igv_component/node_modules/apache-arrow/src/vector.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a2baf83c95deee2296298e9c7d68d19b407ab672
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/vector.ts
@@ -0,0 +1,478 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Type } from './enum.js';
+import { clampRange } from './util/vector.js';
+import { DataType, strideForType } from './type.js';
+import { Data, makeData, DataProps } from './data.js';
+import { BigIntArray, TypedArray, TypedArrayDataType } from './interfaces.js';
+
+import {
+    isChunkedValid,
+    computeChunkOffsets,
+    computeChunkNullCounts,
+    sliceChunks,
+    wrapChunkedCall1,
+    wrapChunkedCall2,
+    wrapChunkedIndexOf,
+} from './util/chunk.js';
+import { BigInt64Array, BigUint64Array } from './util/compat.js';
+
+import { instance as getVisitor } from './visitor/get.js';
+import { instance as setVisitor } from './visitor/set.js';
+import { instance as indexOfVisitor } from './visitor/indexof.js';
+import { instance as iteratorVisitor } from './visitor/iterator.js';
+import { instance as byteLengthVisitor } from './visitor/bytelength.js';
+
+// @ts-ignore
+import type { vectorFromArray } from './factories.js';
+
+export interface Vector<T extends DataType = any> {
+    ///
+    // Virtual properties for the TypeScript compiler.
+    // These do not exist at runtime.
+    ///
+    readonly TType: T['TType'];
+    readonly TArray: T['TArray'];
+    readonly TValue: T['TValue'];
+
+    /**
+     * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/isConcatSpreadable
+     */
+    [Symbol.isConcatSpreadable]: true;
+}
+
+const visitorsByTypeId = {} as { [typeId: number]: { get: any; set: any; indexOf: any; byteLength: any } };
+const vectorPrototypesByTypeId = {} as { [typeId: number]: any };
+
+/**
+ * Array-like data structure. Use the convenience method {@link makeVector} and {@link vectorFromArray} to create vectors.
+ */
+export class Vector<T extends DataType = any> {
+
+    constructor(input: readonly (Data<T> | Vector<T>)[]) {
+        const data: Data<T>[] = input[0] instanceof Vector
+            ? (input as Vector<T>[]).flatMap(x => x.data)
+            : input as Data<T>[];
+        if (data.length === 0 || data.some((x) => !(x instanceof Data))) {
+            throw new TypeError('Vector constructor expects an Array of Data instances.');
+        }
+        const type = data[0]?.type;
+        switch (data.length) {
+            case 0: this._offsets = [0]; break;
+            case 1: {
+                // special case for unchunked vectors
+                const { get, set, indexOf, byteLength } = visitorsByTypeId[type.typeId];
+                const unchunkedData = data[0];
+
+                this.isValid = (index: number) => isChunkedValid(unchunkedData, index);
+                this.get = (index: number) => get(unchunkedData, index);
+                this.set = (index: number, value: T) => set(unchunkedData, index, value);
+                this.indexOf = (index: number) => indexOf(unchunkedData, index);
+                this.getByteLength = (index: number) => byteLength(unchunkedData, index);
+                this._offsets = [0, unchunkedData.length];
+                break;
+            }
+            default:
+                Object.setPrototypeOf(this, vectorPrototypesByTypeId[type.typeId]);
+                this._offsets = computeChunkOffsets(data);
+                break;
+        }
+        this.data = data;
+        this.type = type;
+        this.stride = strideForType(type);
+        this.numChildren = type.children?.length ?? 0;
+        this.length = this._offsets[this._offsets.length - 1];
+    }
+
+    declare protected _offsets: number[] | Uint32Array;
+    declare protected _nullCount: number;
+    declare protected _byteLength: number;
+
+    /**
+     * The {@link DataType `DataType`} of this Vector.
+     */
+    public declare readonly type: T;
+
+    /**
+     * The primitive {@link Data `Data`} instances for this Vector's elements.
+     */
+    public declare readonly data: ReadonlyArray<Data<T>>;
+
+    /**
+     * The number of elements in this Vector.
+     */
+    public declare readonly length: number;
+
+    /**
+     * The number of primitive values per Vector element.
+     */
+    public declare readonly stride: number;
+
+    /**
+     * The number of child Vectors if this Vector is a nested dtype.
+     */
+    public declare readonly numChildren: number;
+
+    /**
+     * The aggregate size (in bytes) of this Vector's buffers and/or child Vectors.
+     */
+    public get byteLength() {
+        if (this._byteLength === -1) {
+            this._byteLength = this.data.reduce((byteLength, data) => byteLength + data.byteLength, 0);
+        }
+        return this._byteLength;
+    }
+
+    /**
+     * The number of null elements in this Vector.
+     */
+    public get nullCount() {
+        if (this._nullCount === -1) {
+            this._nullCount = computeChunkNullCounts(this.data);
+        }
+        return this._nullCount;
+    }
+
+    /**
+     * The Array or TypedAray constructor used for the JS representation
+     *  of the element's values in {@link Vector.prototype.toArray `toArray()`}.
+     */
+    public get ArrayType(): T['ArrayType'] { return this.type.ArrayType; }
+
+    /**
+     * The name that should be printed when the Vector is logged in a message.
+     */
+    public get [Symbol.toStringTag]() {
+        return `${this.VectorName}<${this.type[Symbol.toStringTag]}>`;
+    }
+
+    /**
+     * The name of this Vector.
+     */
+    public get VectorName() { return `${Type[this.type.typeId]}Vector`; }
+
+    /**
+     * Check whether an element is null.
+     * @param index The index at which to read the validity bitmap.
+     */
+    // @ts-ignore
+    public isValid(index: number): boolean { return false; }
+
+    /**
+     * Get an element value by position.
+     * @param index The index of the element to read.
+     */
+    // @ts-ignore
+    public get(index: number): T['TValue'] | null { return null; }
+
+    /**
+     * Set an element value by position.
+     * @param index The index of the element to write.
+     * @param value The value to set.
+     */
+    // @ts-ignore
+    public set(index: number, value: T['TValue'] | null): void { return; }
+
+    /**
+     * Retrieve the index of the first occurrence of a value in an Vector.
+     * @param element The value to locate in the Vector.
+     * @param offset The index at which to begin the search. If offset is omitted, the search starts at index 0.
+     */
+    // @ts-ignore
+    public indexOf(element: T['TValue'], offset?: number): number { return -1; }
+
+    public includes(element: T['TValue'], offset?: number): boolean { return this.indexOf(element, offset) > 0; }
+
+    /**
+     * Get the size in bytes of an element by index.
+     * @param index The index at which to get the byteLength.
+     */
+    // @ts-ignore
+    public getByteLength(index: number): number { return 0; }
+
+    /**
+     * Iterator for the Vector's elements.
+     */
+    public [Symbol.iterator](): IterableIterator<T['TValue'] | null> {
+        return iteratorVisitor.visit(this);
+    }
+
+    /**
+     * Combines two or more Vectors of the same type.
+     * @param others Additional Vectors to add to the end of this Vector.
+     */
+    public concat(...others: Vector<T>[]): Vector<T> {
+        return new Vector(this.data.concat(others.flatMap((x) => x.data).flat(Number.POSITIVE_INFINITY)));
+    }
+
+    /**
+     * Return a zero-copy sub-section of this Vector.
+     * @param start The beginning of the specified portion of the Vector.
+     * @param end The end of the specified portion of the Vector. This is exclusive of the element at the index 'end'.
+     */
+    public slice(begin?: number, end?: number): Vector<T> {
+        return new Vector(clampRange(this, begin, end, ({ data, _offsets }, begin, end) =>
+            sliceChunks(data, _offsets, begin, end)
+        ));
+    }
+
+    public toJSON() { return [...this]; }
+
+    /**
+     * Return a JavaScript Array or TypedArray of the Vector's elements.
+     *
+     * @note If this Vector contains a single Data chunk and the Vector's type is a
+     *  primitive numeric type corresponding to one of the JavaScript TypedArrays, this
+     *  method returns a zero-copy slice of the underlying TypedArray values. If there's
+     *  more than one chunk, the resulting TypedArray will be a copy of the data from each
+     *  chunk's underlying TypedArray values.
+     *
+     * @returns An Array or TypedArray of the Vector's elements, based on the Vector's DataType.
+     */
+    public toArray(): T['TArray'] {
+        const { type, data, length, stride, ArrayType } = this;
+        // Fast case, return subarray if possible
+        switch (type.typeId) {
+            case Type.Int:
+            case Type.Float:
+            case Type.Decimal:
+            case Type.Time:
+            case Type.Timestamp:
+                switch (data.length) {
+                    case 0: return new ArrayType();
+                    case 1: return data[0].values.subarray(0, length * stride);
+                    default: return data.reduce((memo, { values, length: chunk_length }) => {
+                        memo.array.set(values.subarray(0, chunk_length * stride), memo.offset);
+                        memo.offset += chunk_length * stride;
+                        return memo;
+                    }, { array: new ArrayType(length * stride), offset: 0 }).array;
+                }
+        }
+        // Otherwise if not primitive, slow copy
+        return [...this] as T['TArray'];
+    }
+
+    /**
+     * Returns a string representation of the Vector.
+     *
+     * @returns A string representation of the Vector.
+     */
+    public toString() {
+        return `[${[...this].join(',')}]`;
+    }
+
+    /**
+     * Returns a child Vector by name, or null if this Vector has no child with the given name.
+     * @param name The name of the child to retrieve.
+     */
+    public getChild<R extends keyof T['TChildren']>(name: R) {
+        return this.getChildAt(this.type.children?.findIndex((f) => f.name === name));
+    }
+
+    /**
+     * Returns a child Vector by index, or null if this Vector has no child at the supplied index.
+     * @param index The index of the child to retrieve.
+     */
+    public getChildAt<R extends DataType = any>(index: number): Vector<R> | null {
+        if (index > -1 && index < this.numChildren) {
+            return new Vector(this.data.map(({ children }) => children[index] as Data<R>));
+        }
+        return null;
+    }
+
+    public get isMemoized(): boolean {
+        if (DataType.isDictionary(this.type)) {
+            return this.data[0].dictionary!.isMemoized;
+        }
+        return false;
+    }
+
+    /**
+     * Adds memoization to the Vector's {@link get} method. For dictionary
+     * vectors, this method return a vector that memoizes only the dictionary
+     * values.
+     *
+     * Memoization is very useful when decoding a value is expensive such as
+     * Uft8. The memoization creates a cache of the size of the Vector and
+     * therfore increases memory usage.
+     *
+     * @returns A new vector that memoizes calls to {@link get}.
+     */
+    public memoize(): MemoizedVector<T> {
+        if (DataType.isDictionary(this.type)) {
+            const dictionary = new MemoizedVector(this.data[0].dictionary!);
+            const newData = this.data.map((data) => {
+                const cloned = data.clone();
+                cloned.dictionary = dictionary;
+                return cloned;
+            });
+            return new Vector(newData);
+        }
+        return new MemoizedVector(this);
+    }
+
+    /**
+     * Returns a vector without memoization of the {@link get} method. If this
+     * vector is not memoized, this method returns this vector.
+     *
+     * @returns A a vector without memoization.
+     */
+    public unmemoize(): Vector<T> {
+        if (DataType.isDictionary(this.type) && this.isMemoized) {
+            const dictionary = this.data[0].dictionary!.unmemoize();
+            const newData = this.data.map((data) => {
+                const newData = data.clone();
+                newData.dictionary = dictionary;
+                return newData;
+            });
+            return new Vector(newData);
+        }
+        return this;
+    }
+
+    // Initialize this static property via an IIFE so bundlers don't tree-shake
+    // out this logic, but also so we're still compliant with `"sideEffects": false`
+    protected static [Symbol.toStringTag] = ((proto: Vector) => {
+        (proto as any).type = DataType.prototype;
+        (proto as any).data = [];
+        (proto as any).length = 0;
+        (proto as any).stride = 1;
+        (proto as any).numChildren = 0;
+        (proto as any)._nullCount = -1;
+        (proto as any)._byteLength = -1;
+        (proto as any)._offsets = new Uint32Array([0]);
+        (proto as any)[Symbol.isConcatSpreadable] = true;
+
+        const typeIds: Type[] = Object.keys(Type)
+            .map((T: any) => Type[T] as any)
+            .filter((T: any) => typeof T === 'number' && T !== Type.NONE);
+
+        for (const typeId of typeIds) {
+            const get = getVisitor.getVisitFnByTypeId(typeId);
+            const set = setVisitor.getVisitFnByTypeId(typeId);
+            const indexOf = indexOfVisitor.getVisitFnByTypeId(typeId);
+            const byteLength = byteLengthVisitor.getVisitFnByTypeId(typeId);
+
+            visitorsByTypeId[typeId] = { get, set, indexOf, byteLength };
+            vectorPrototypesByTypeId[typeId] = Object.create(proto, {
+                ['isValid']: { value: wrapChunkedCall1(isChunkedValid) },
+                ['get']: { value: wrapChunkedCall1(getVisitor.getVisitFnByTypeId(typeId)) },
+                ['set']: { value: wrapChunkedCall2(setVisitor.getVisitFnByTypeId(typeId)) },
+                ['indexOf']: { value: wrapChunkedIndexOf(indexOfVisitor.getVisitFnByTypeId(typeId)) },
+                ['getByteLength']: { value: wrapChunkedCall1(byteLengthVisitor.getVisitFnByTypeId(typeId)) },
+            });
+        }
+
+        return 'Vector';
+    })(Vector.prototype);
+}
+
+class MemoizedVector<T extends DataType = any> extends Vector<T> {
+
+    public constructor(vector: Vector<T>) {
+        super(vector.data);
+
+        const get = this.get;
+        const set = this.set;
+        const slice = this.slice;
+
+        const cache = new Array<T['TValue'] | null>(this.length);
+
+        Object.defineProperty(this, 'get', {
+            value(index: number) {
+                const cachedValue = cache[index];
+                if (cachedValue !== undefined) {
+                    return cachedValue;
+                }
+                const value = get.call(this, index);
+                cache[index] = value;
+                return value;
+            }
+        });
+
+        Object.defineProperty(this, 'set', {
+            value(index: number, value: T['TValue'] | null) {
+                set.call(this, index, value);
+                cache[index] = value;
+            }
+        });
+
+        Object.defineProperty(this, 'slice', {
+            value: (begin?: number, end?: number) => new MemoizedVector(slice.call(this, begin, end))
+        });
+
+        Object.defineProperty(this, 'isMemoized', { value: true });
+
+        Object.defineProperty(this, 'unmemoize', {
+            value: () => new Vector(this.data)
+        });
+
+        Object.defineProperty(this, 'memoize', {
+            value: () => this
+        });
+    }
+}
+
+import * as dtypes from './type.js';
+
+/**
+ * Creates a Vector without data copies.
+ *
+ * @example
+ * ```ts
+ * const vector = makeVector(new Int32Array([1, 2, 3]));
+ * ```
+ */
+export function makeVector<T extends TypedArray | BigIntArray>(data: T | readonly T[]): Vector<TypedArrayDataType<T>>;
+export function makeVector<T extends DataView>(data: T | readonly T[]): Vector<dtypes.Int8>;
+export function makeVector<T extends DataType>(data: Data<T> | readonly Data<T>[]): Vector<T>;
+export function makeVector<T extends DataType>(data: Vector<T> | readonly Vector<T>[]): Vector<T>;
+export function makeVector<T extends DataType>(data: DataProps<T> | readonly DataProps<T>[]): Vector<T>;
+
+export function makeVector(init: any) {
+    if (init) {
+        if (init instanceof Data) { return new Vector([init]); }
+        if (init instanceof Vector) { return new Vector(init.data); }
+        if (init.type instanceof DataType) { return new Vector([makeData(init)]); }
+        if (Array.isArray(init)) {
+            return new Vector(init.flatMap(v => unwrapInputs(v)));
+        }
+        if (ArrayBuffer.isView(init)) {
+            if (init instanceof DataView) {
+                init = new Uint8Array(init.buffer);
+            }
+            const props = { offset: 0, length: init.length, nullCount: 0, data: init };
+            if (init instanceof Int8Array) { return new Vector([makeData({ ...props, type: new dtypes.Int8 })]); }
+            if (init instanceof Int16Array) { return new Vector([makeData({ ...props, type: new dtypes.Int16 })]); }
+            if (init instanceof Int32Array) { return new Vector([makeData({ ...props, type: new dtypes.Int32 })]); }
+            if (init instanceof BigInt64Array) { return new Vector([makeData({ ...props, type: new dtypes.Int64 })]); }
+            if (init instanceof Uint8Array || init instanceof Uint8ClampedArray) { return new Vector([makeData({ ...props, type: new dtypes.Uint8 })]); }
+            if (init instanceof Uint16Array) { return new Vector([makeData({ ...props, type: new dtypes.Uint16 })]); }
+            if (init instanceof Uint32Array) { return new Vector([makeData({ ...props, type: new dtypes.Uint32 })]); }
+            if (init instanceof BigUint64Array) { return new Vector([makeData({ ...props, type: new dtypes.Uint64 })]); }
+            if (init instanceof Float32Array) { return new Vector([makeData({ ...props, type: new dtypes.Float32 })]); }
+            if (init instanceof Float64Array) { return new Vector([makeData({ ...props, type: new dtypes.Float64 })]); }
+            throw new Error('Unrecognized input');
+        }
+    }
+    throw new Error('Unrecognized input');
+}
+
+function unwrapInputs(x: any) {
+    return x instanceof Data ? [x] : (x instanceof Vector ? x.data : makeVector(x).data);
+}
diff --git a/igv_component/node_modules/apache-arrow/src/visitor.ts b/igv_component/node_modules/apache-arrow/src/visitor.ts
new file mode 100644
index 0000000000000000000000000000000000000000..3be50a6d3eacf1ec8bb438c6bf17acdc92f309a4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/visitor.ts
@@ -0,0 +1,272 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Type, Precision, DateUnit, TimeUnit, IntervalUnit, UnionMode } from './enum.js';
+import { DataType, Float, Int, Date_, Interval, Time, Timestamp, Union, } from './type.js';
+
+export abstract class Visitor {
+    public visitMany(nodes: any[], ...args: any[][]) {
+        return nodes.map((node, i) => this.visit(node, ...args.map((x) => x[i])));
+    }
+    public visit(...args: any[]) {
+        return this.getVisitFn(args[0], false).apply(this, args);
+    }
+    public getVisitFn(node: any, throwIfNotFound = true) {
+        return getVisitFn(this, node, throwIfNotFound);
+    }
+    public getVisitFnByTypeId(typeId: Type, throwIfNotFound = true) {
+        return getVisitFnByTypeId(this, typeId, throwIfNotFound);
+    }
+    public visitNull(_node: any, ..._args: any[]): any { return null; }
+    public visitBool(_node: any, ..._args: any[]): any { return null; }
+    public visitInt(_node: any, ..._args: any[]): any { return null; }
+    public visitFloat(_node: any, ..._args: any[]): any { return null; }
+    public visitUtf8(_node: any, ..._args: any[]): any { return null; }
+    public visitBinary(_node: any, ..._args: any[]): any { return null; }
+    public visitFixedSizeBinary(_node: any, ..._args: any[]): any { return null; }
+    public visitDate(_node: any, ..._args: any[]): any { return null; }
+    public visitTimestamp(_node: any, ..._args: any[]): any { return null; }
+    public visitTime(_node: any, ..._args: any[]): any { return null; }
+    public visitDecimal(_node: any, ..._args: any[]): any { return null; }
+    public visitList(_node: any, ..._args: any[]): any { return null; }
+    public visitStruct(_node: any, ..._args: any[]): any { return null; }
+    public visitUnion(_node: any, ..._args: any[]): any { return null; }
+    public visitDictionary(_node: any, ..._args: any[]): any { return null; }
+    public visitInterval(_node: any, ..._args: any[]): any { return null; }
+    public visitFixedSizeList(_node: any, ..._args: any[]): any { return null; }
+    public visitMap(_node: any, ..._args: any[]): any { return null; }
+}
+
+/** @ignore */
+function getVisitFn<T extends DataType>(visitor: Visitor, node: any, throwIfNotFound = true) {
+    if (typeof node === 'number') {
+        return getVisitFnByTypeId(visitor, node, throwIfNotFound);
+    }
+    if (typeof node === 'string' && (node in Type)) {
+        return getVisitFnByTypeId(visitor, Type[node as keyof typeof Type], throwIfNotFound);
+    }
+    if (node && (node instanceof DataType)) {
+        return getVisitFnByTypeId(visitor, inferDType(node as T), throwIfNotFound);
+    }
+    if (node?.type && (node.type instanceof DataType)) {
+        return getVisitFnByTypeId(visitor, inferDType(node.type as T), throwIfNotFound);
+    }
+    return getVisitFnByTypeId(visitor, Type.NONE, throwIfNotFound);
+}
+
+/** @ignore */
+function getVisitFnByTypeId(visitor: Visitor, dtype: Type, throwIfNotFound = true) {
+    let fn: any = null;
+    switch (dtype) {
+        case Type.Null: fn = visitor.visitNull; break;
+        case Type.Bool: fn = visitor.visitBool; break;
+        case Type.Int: fn = visitor.visitInt; break;
+        case Type.Int8: fn = visitor.visitInt8 || visitor.visitInt; break;
+        case Type.Int16: fn = visitor.visitInt16 || visitor.visitInt; break;
+        case Type.Int32: fn = visitor.visitInt32 || visitor.visitInt; break;
+        case Type.Int64: fn = visitor.visitInt64 || visitor.visitInt; break;
+        case Type.Uint8: fn = visitor.visitUint8 || visitor.visitInt; break;
+        case Type.Uint16: fn = visitor.visitUint16 || visitor.visitInt; break;
+        case Type.Uint32: fn = visitor.visitUint32 || visitor.visitInt; break;
+        case Type.Uint64: fn = visitor.visitUint64 || visitor.visitInt; break;
+        case Type.Float: fn = visitor.visitFloat; break;
+        case Type.Float16: fn = visitor.visitFloat16 || visitor.visitFloat; break;
+        case Type.Float32: fn = visitor.visitFloat32 || visitor.visitFloat; break;
+        case Type.Float64: fn = visitor.visitFloat64 || visitor.visitFloat; break;
+        case Type.Utf8: fn = visitor.visitUtf8; break;
+        case Type.Binary: fn = visitor.visitBinary; break;
+        case Type.FixedSizeBinary: fn = visitor.visitFixedSizeBinary; break;
+        case Type.Date: fn = visitor.visitDate; break;
+        case Type.DateDay: fn = visitor.visitDateDay || visitor.visitDate; break;
+        case Type.DateMillisecond: fn = visitor.visitDateMillisecond || visitor.visitDate; break;
+        case Type.Timestamp: fn = visitor.visitTimestamp; break;
+        case Type.TimestampSecond: fn = visitor.visitTimestampSecond || visitor.visitTimestamp; break;
+        case Type.TimestampMillisecond: fn = visitor.visitTimestampMillisecond || visitor.visitTimestamp; break;
+        case Type.TimestampMicrosecond: fn = visitor.visitTimestampMicrosecond || visitor.visitTimestamp; break;
+        case Type.TimestampNanosecond: fn = visitor.visitTimestampNanosecond || visitor.visitTimestamp; break;
+        case Type.Time: fn = visitor.visitTime; break;
+        case Type.TimeSecond: fn = visitor.visitTimeSecond || visitor.visitTime; break;
+        case Type.TimeMillisecond: fn = visitor.visitTimeMillisecond || visitor.visitTime; break;
+        case Type.TimeMicrosecond: fn = visitor.visitTimeMicrosecond || visitor.visitTime; break;
+        case Type.TimeNanosecond: fn = visitor.visitTimeNanosecond || visitor.visitTime; break;
+        case Type.Decimal: fn = visitor.visitDecimal; break;
+        case Type.List: fn = visitor.visitList; break;
+        case Type.Struct: fn = visitor.visitStruct; break;
+        case Type.Union: fn = visitor.visitUnion; break;
+        case Type.DenseUnion: fn = visitor.visitDenseUnion || visitor.visitUnion; break;
+        case Type.SparseUnion: fn = visitor.visitSparseUnion || visitor.visitUnion; break;
+        case Type.Dictionary: fn = visitor.visitDictionary; break;
+        case Type.Interval: fn = visitor.visitInterval; break;
+        case Type.IntervalDayTime: fn = visitor.visitIntervalDayTime || visitor.visitInterval; break;
+        case Type.IntervalYearMonth: fn = visitor.visitIntervalYearMonth || visitor.visitInterval; break;
+        case Type.FixedSizeList: fn = visitor.visitFixedSizeList; break;
+        case Type.Map: fn = visitor.visitMap; break;
+    }
+    if (typeof fn === 'function') return fn;
+    if (!throwIfNotFound) return () => null;
+    throw new Error(`Unrecognized type '${Type[dtype]}'`);
+}
+
+/** @ignore */
+function inferDType<T extends DataType>(type: T): Type {
+    switch (type.typeId) {
+        case Type.Null: return Type.Null;
+        case Type.Int: {
+            const { bitWidth, isSigned } = (type as any as Int);
+            switch (bitWidth) {
+                case 8: return isSigned ? Type.Int8 : Type.Uint8;
+                case 16: return isSigned ? Type.Int16 : Type.Uint16;
+                case 32: return isSigned ? Type.Int32 : Type.Uint32;
+                case 64: return isSigned ? Type.Int64 : Type.Uint64;
+            }
+            // @ts-ignore
+            return Type.Int;
+        }
+        case Type.Float:
+            switch ((type as any as Float).precision) {
+                case Precision.HALF: return Type.Float16;
+                case Precision.SINGLE: return Type.Float32;
+                case Precision.DOUBLE: return Type.Float64;
+            }
+            // @ts-ignore
+            return Type.Float;
+        case Type.Binary: return Type.Binary;
+        case Type.Utf8: return Type.Utf8;
+        case Type.Bool: return Type.Bool;
+        case Type.Decimal: return Type.Decimal;
+        case Type.Time:
+            switch ((type as any as Time).unit) {
+                case TimeUnit.SECOND: return Type.TimeSecond;
+                case TimeUnit.MILLISECOND: return Type.TimeMillisecond;
+                case TimeUnit.MICROSECOND: return Type.TimeMicrosecond;
+                case TimeUnit.NANOSECOND: return Type.TimeNanosecond;
+            }
+            // @ts-ignore
+            return Type.Time;
+        case Type.Timestamp:
+            switch ((type as any as Timestamp).unit) {
+                case TimeUnit.SECOND: return Type.TimestampSecond;
+                case TimeUnit.MILLISECOND: return Type.TimestampMillisecond;
+                case TimeUnit.MICROSECOND: return Type.TimestampMicrosecond;
+                case TimeUnit.NANOSECOND: return Type.TimestampNanosecond;
+            }
+            // @ts-ignore
+            return Type.Timestamp;
+        case Type.Date:
+            switch ((type as any as Date_).unit) {
+                case DateUnit.DAY: return Type.DateDay;
+                case DateUnit.MILLISECOND: return Type.DateMillisecond;
+            }
+            // @ts-ignore
+            return Type.Date;
+        case Type.Interval:
+            switch ((type as any as Interval).unit) {
+                case IntervalUnit.DAY_TIME: return Type.IntervalDayTime;
+                case IntervalUnit.YEAR_MONTH: return Type.IntervalYearMonth;
+            }
+            // @ts-ignore
+            return Type.Interval;
+        case Type.Map: return Type.Map;
+        case Type.List: return Type.List;
+        case Type.Struct: return Type.Struct;
+        case Type.Union:
+            switch ((type as any as Union).mode) {
+                case UnionMode.Dense: return Type.DenseUnion;
+                case UnionMode.Sparse: return Type.SparseUnion;
+            }
+            // @ts-ignore
+            return Type.Union;
+        case Type.FixedSizeBinary: return Type.FixedSizeBinary;
+        case Type.FixedSizeList: return Type.FixedSizeList;
+        case Type.Dictionary: return Type.Dictionary;
+    }
+    throw new Error(`Unrecognized type '${Type[type.typeId]}'`);
+}
+
+export interface Visitor {
+    visitNull(node: any, ...args: any[]): any;
+    visitBool(node: any, ...args: any[]): any;
+    visitInt(node: any, ...args: any[]): any;
+    visitInt8?(node: any, ...args: any[]): any;
+    visitInt16?(node: any, ...args: any[]): any;
+    visitInt32?(node: any, ...args: any[]): any;
+    visitInt64?(node: any, ...args: any[]): any;
+    visitUint8?(node: any, ...args: any[]): any;
+    visitUint16?(node: any, ...args: any[]): any;
+    visitUint32?(node: any, ...args: any[]): any;
+    visitUint64?(node: any, ...args: any[]): any;
+    visitFloat(node: any, ...args: any[]): any;
+    visitFloat16?(node: any, ...args: any[]): any;
+    visitFloat32?(node: any, ...args: any[]): any;
+    visitFloat64?(node: any, ...args: any[]): any;
+    visitUtf8(node: any, ...args: any[]): any;
+    visitBinary(node: any, ...args: any[]): any;
+    visitFixedSizeBinary(node: any, ...args: any[]): any;
+    visitDate(node: any, ...args: any[]): any;
+    visitDateDay?(node: any, ...args: any[]): any;
+    visitDateMillisecond?(node: any, ...args: any[]): any;
+    visitTimestamp(node: any, ...args: any[]): any;
+    visitTimestampSecond?(node: any, ...args: any[]): any;
+    visitTimestampMillisecond?(node: any, ...args: any[]): any;
+    visitTimestampMicrosecond?(node: any, ...args: any[]): any;
+    visitTimestampNanosecond?(node: any, ...args: any[]): any;
+    visitTime(node: any, ...args: any[]): any;
+    visitTimeSecond?(node: any, ...args: any[]): any;
+    visitTimeMillisecond?(node: any, ...args: any[]): any;
+    visitTimeMicrosecond?(node: any, ...args: any[]): any;
+    visitTimeNanosecond?(node: any, ...args: any[]): any;
+    visitDecimal(node: any, ...args: any[]): any;
+    visitList(node: any, ...args: any[]): any;
+    visitStruct(node: any, ...args: any[]): any;
+    visitUnion(node: any, ...args: any[]): any;
+    visitDenseUnion?(node: any, ...args: any[]): any;
+    visitSparseUnion?(node: any, ...args: any[]): any;
+    visitDictionary(node: any, ...args: any[]): any;
+    visitInterval(node: any, ...args: any[]): any;
+    visitIntervalDayTime?(node: any, ...args: any[]): any;
+    visitIntervalYearMonth?(node: any, ...args: any[]): any;
+    visitFixedSizeList(node: any, ...args: any[]): any;
+    visitMap(node: any, ...args: any[]): any;
+}
+
+// Add these here so they're picked up by the externs creator
+// in the build, and closure-compiler doesn't minify them away
+(Visitor.prototype as any).visitInt8 = null;
+(Visitor.prototype as any).visitInt16 = null;
+(Visitor.prototype as any).visitInt32 = null;
+(Visitor.prototype as any).visitInt64 = null;
+(Visitor.prototype as any).visitUint8 = null;
+(Visitor.prototype as any).visitUint16 = null;
+(Visitor.prototype as any).visitUint32 = null;
+(Visitor.prototype as any).visitUint64 = null;
+(Visitor.prototype as any).visitFloat16 = null;
+(Visitor.prototype as any).visitFloat32 = null;
+(Visitor.prototype as any).visitFloat64 = null;
+(Visitor.prototype as any).visitDateDay = null;
+(Visitor.prototype as any).visitDateMillisecond = null;
+(Visitor.prototype as any).visitTimestampSecond = null;
+(Visitor.prototype as any).visitTimestampMillisecond = null;
+(Visitor.prototype as any).visitTimestampMicrosecond = null;
+(Visitor.prototype as any).visitTimestampNanosecond = null;
+(Visitor.prototype as any).visitTimeSecond = null;
+(Visitor.prototype as any).visitTimeMillisecond = null;
+(Visitor.prototype as any).visitTimeMicrosecond = null;
+(Visitor.prototype as any).visitTimeNanosecond = null;
+(Visitor.prototype as any).visitDenseUnion = null;
+(Visitor.prototype as any).visitSparseUnion = null;
+(Visitor.prototype as any).visitIntervalDayTime = null;
+(Visitor.prototype as any).visitIntervalYearMonth = null;
diff --git a/igv_component/node_modules/apache-arrow/src/visitor/builderctor.ts b/igv_component/node_modules/apache-arrow/src/visitor/builderctor.ts
new file mode 100644
index 0000000000000000000000000000000000000000..9ce9ae4d4a79709f1b3a61c3d35919c72c7a0c95
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/visitor/builderctor.ts
@@ -0,0 +1,99 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Data } from '../data.js';
+import { Type } from '../enum.js';
+import { Vector } from '../vector.js';
+import { DataType } from '../type.js';
+import { Visitor } from '../visitor.js';
+import { BuilderCtor } from '../interfaces.js';
+import { BinaryBuilder } from '../builder/binary.js';
+import { BoolBuilder } from '../builder/bool.js';
+import { DateBuilder, DateDayBuilder, DateMillisecondBuilder } from '../builder/date.js';
+import { DecimalBuilder } from '../builder/decimal.js';
+import { DictionaryBuilder } from '../builder/dictionary.js';
+import { FixedSizeBinaryBuilder } from '../builder/fixedsizebinary.js';
+import { FixedSizeListBuilder } from '../builder/fixedsizelist.js';
+import { FloatBuilder, Float16Builder, Float32Builder, Float64Builder } from '../builder/float.js';
+import { IntervalBuilder, IntervalDayTimeBuilder, IntervalYearMonthBuilder } from '../builder/interval.js';
+import { IntBuilder, Int8Builder, Int16Builder, Int32Builder, Int64Builder, Uint8Builder, Uint16Builder, Uint32Builder, Uint64Builder } from '../builder/int.js';
+import { ListBuilder } from '../builder/list.js';
+import { MapBuilder } from '../builder/map.js';
+import { NullBuilder } from '../builder/null.js';
+import { StructBuilder } from '../builder/struct.js';
+import { TimestampBuilder, TimestampSecondBuilder, TimestampMillisecondBuilder, TimestampMicrosecondBuilder, TimestampNanosecondBuilder } from '../builder/timestamp.js';
+import { TimeBuilder, TimeSecondBuilder, TimeMillisecondBuilder, TimeMicrosecondBuilder, TimeNanosecondBuilder } from '../builder/time.js';
+import { UnionBuilder, DenseUnionBuilder, SparseUnionBuilder } from '../builder/union.js';
+import { Utf8Builder } from '../builder/utf8.js';
+
+/** @ignore */
+export interface GetBuilderCtor extends Visitor {
+    visit<T extends Type>(type: T): BuilderCtor<T>;
+    visitMany<T extends Type>(types: T[]): BuilderCtor<T>[];
+    getVisitFn<T extends Type>(type: T): () => BuilderCtor<T>;
+    getVisitFn<T extends DataType>(node: Vector<T> | Data<T> | T): () => BuilderCtor<T>;
+}
+
+/** @ignore */
+export class GetBuilderCtor extends Visitor {
+    public visitNull() { return NullBuilder; }
+    public visitBool() { return BoolBuilder; }
+    public visitInt() { return IntBuilder; }
+    public visitInt8() { return Int8Builder; }
+    public visitInt16() { return Int16Builder; }
+    public visitInt32() { return Int32Builder; }
+    public visitInt64() { return Int64Builder; }
+    public visitUint8() { return Uint8Builder; }
+    public visitUint16() { return Uint16Builder; }
+    public visitUint32() { return Uint32Builder; }
+    public visitUint64() { return Uint64Builder; }
+    public visitFloat() { return FloatBuilder; }
+    public visitFloat16() { return Float16Builder; }
+    public visitFloat32() { return Float32Builder; }
+    public visitFloat64() { return Float64Builder; }
+    public visitUtf8() { return Utf8Builder; }
+    public visitBinary() { return BinaryBuilder; }
+    public visitFixedSizeBinary() { return FixedSizeBinaryBuilder; }
+    public visitDate() { return DateBuilder; }
+    public visitDateDay() { return DateDayBuilder; }
+    public visitDateMillisecond() { return DateMillisecondBuilder; }
+    public visitTimestamp() { return TimestampBuilder; }
+    public visitTimestampSecond() { return TimestampSecondBuilder; }
+    public visitTimestampMillisecond() { return TimestampMillisecondBuilder; }
+    public visitTimestampMicrosecond() { return TimestampMicrosecondBuilder; }
+    public visitTimestampNanosecond() { return TimestampNanosecondBuilder; }
+    public visitTime() { return TimeBuilder; }
+    public visitTimeSecond() { return TimeSecondBuilder; }
+    public visitTimeMillisecond() { return TimeMillisecondBuilder; }
+    public visitTimeMicrosecond() { return TimeMicrosecondBuilder; }
+    public visitTimeNanosecond() { return TimeNanosecondBuilder; }
+    public visitDecimal() { return DecimalBuilder; }
+    public visitList() { return ListBuilder; }
+    public visitStruct() { return StructBuilder; }
+    public visitUnion() { return UnionBuilder; }
+    public visitDenseUnion() { return DenseUnionBuilder; }
+    public visitSparseUnion() { return SparseUnionBuilder; }
+    public visitDictionary() { return DictionaryBuilder; }
+    public visitInterval() { return IntervalBuilder; }
+    public visitIntervalDayTime() { return IntervalDayTimeBuilder; }
+    public visitIntervalYearMonth() { return IntervalYearMonthBuilder; }
+    public visitFixedSizeList() { return FixedSizeListBuilder; }
+    public visitMap() { return MapBuilder; }
+}
+
+/** @ignore */
+export const instance = new GetBuilderCtor();
diff --git a/igv_component/node_modules/apache-arrow/src/visitor/bytelength.ts b/igv_component/node_modules/apache-arrow/src/visitor/bytelength.ts
new file mode 100644
index 0000000000000000000000000000000000000000..862808ad54ee92c100f230680daccd6dce93f8da
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/visitor/bytelength.ts
@@ -0,0 +1,163 @@
+/* istanbul ignore file */
+
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+/* eslint-disable unicorn/no-array-callback-reference */
+
+import { Data } from '../data.js';
+import { Visitor } from '../visitor.js';
+import { TypeToDataType } from '../interfaces.js';
+import { Type, TimeUnit, UnionMode } from '../enum.js';
+import {
+    DataType, Dictionary,
+    Float, Int, Date_, Interval, Time, Timestamp,
+    Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary,
+    List, FixedSizeList, Map_, Struct, Union, DenseUnion, SparseUnion,
+} from '../type.js';
+
+/** @ignore */ const sum = (x: number, y: number) => x + y;
+
+/** @ignore */
+export interface GetByteLengthVisitor extends Visitor {
+    visit<T extends DataType>(node: Data<T>, index: number): number;
+    visitMany<T extends DataType>(nodes: Data<T>[], index: number[]): number[];
+    getVisitFn<T extends DataType>(node: Data<T> | T): (data: Data<T>, index: number) => number;
+    getVisitFn<T extends Type>(node: T): (data: Data<TypeToDataType<T>>, index: number) => number;
+    visitBinary<T extends Binary>(data: Data<T>, index: number): number;
+    visitUtf8<T extends Utf8>(data: Data<T>, index: number): number;
+    visitList<T extends List>(data: Data<T>, index: number): number;
+    visitDenseUnion<T extends DenseUnion>(data: Data<T>, index: number): number;
+    visitSparseUnion<T extends SparseUnion>(data: Data<T>, index: number): number;
+    visitFixedSizeList<T extends FixedSizeList>(data: Data<T>, index: number): number;
+}
+
+/** @ignore */
+export class GetByteLengthVisitor extends Visitor {
+    public visitNull(____: Data<Null>, _: number) {
+        return 0;
+    }
+    public visitInt(data: Data<Int>, _: number) {
+        return data.type.bitWidth / 8;
+    }
+    public visitFloat(data: Data<Float>, _: number) {
+        return data.type.ArrayType.BYTES_PER_ELEMENT;
+    }
+    public visitBool(____: Data<Bool>, _: number) {
+        return 1 / 8;
+    }
+    public visitDecimal(data: Data<Decimal>, _: number) {
+        return data.type.bitWidth / 8;
+    }
+    public visitDate(data: Data<Date_>, _: number) {
+        return (data.type.unit + 1) * 4;
+    }
+    public visitTime(data: Data<Time>, _: number) {
+        return data.type.bitWidth / 8;
+    }
+    public visitTimestamp(data: Data<Timestamp>, _: number) {
+        return data.type.unit === TimeUnit.SECOND ? 4 : 8;
+    }
+    public visitInterval(data: Data<Interval>, _: number) {
+        return (data.type.unit + 1) * 4;
+    }
+    public visitStruct(data: Data<Struct>, i: number) {
+        return data.children.reduce((total, child) => total + instance.visit(child, i), 0);
+    }
+    public visitFixedSizeBinary(data: Data<FixedSizeBinary>, _: number) {
+        return data.type.byteWidth;
+    }
+    public visitMap(data: Data<Map_>, i: number) {
+        // 4 + 4 for the indices
+        return 8 + data.children.reduce((total, child) => total + instance.visit(child, i), 0);
+    }
+    public visitDictionary(data: Data<Dictionary>, i: number) {
+        return (data.type.indices.bitWidth / 8) + (data.dictionary?.getByteLength(data.values[i]) || 0);
+    }
+}
+
+/** @ignore */
+const getUtf8ByteLength = <T extends Utf8>({ valueOffsets }: Data<T>, index: number): number => {
+    // 4 + 4 for the indices, `end - start` for the data bytes
+    return 8 + (valueOffsets[index + 1] - valueOffsets[index]);
+};
+
+/** @ignore */
+const getBinaryByteLength = <T extends Binary>({ valueOffsets }: Data<T>, index: number): number => {
+    // 4 + 4 for the indices, `end - start` for the data bytes
+    return 8 + (valueOffsets[index + 1] - valueOffsets[index]);
+};
+
+/** @ignore */
+const getListByteLength = <T extends List>({ valueOffsets, stride, children }: Data<T>, index: number): number => {
+    const child: Data<T['valueType']> = children[0];
+    const { [index * stride]: start } = valueOffsets;
+    const { [index * stride + 1]: end } = valueOffsets;
+    const visit = instance.getVisitFn(child.type);
+    const slice = child.slice(start, end - start);
+    let size = 8; // 4 + 4 for the indices
+    for (let idx = -1, len = end - start; ++idx < len;) {
+        size += visit(slice, idx);
+    }
+    return size;
+};
+
+/** @ignore */
+const getFixedSizeListByteLength = <T extends FixedSizeList>({ stride, children }: Data<T>, index: number): number => {
+    const child: Data<T['valueType']> = children[0];
+    const slice = child.slice(index * stride, stride);
+    const visit = instance.getVisitFn(child.type);
+    let size = 0;
+    for (let idx = -1, len = slice.length; ++idx < len;) {
+        size += visit(slice, idx);
+    }
+    return size;
+};
+
+/* istanbul ignore next */
+/** @ignore */
+const getUnionByteLength = <
+    D extends Data<Union> | Data<DenseUnion> | Data<SparseUnion>
+>(data: D, index: number): number => {
+    return data.type.mode === UnionMode.Dense ?
+        getDenseUnionByteLength(data as Data<DenseUnion>, index) :
+        getSparseUnionByteLength(data as Data<SparseUnion>, index);
+};
+
+/** @ignore */
+const getDenseUnionByteLength = <T extends DenseUnion>({ type, children, typeIds, valueOffsets }: Data<T>, index: number): number => {
+    const childIndex = type.typeIdToChildIndex[typeIds[index]];
+    // 4 for the typeId, 4 for the valueOffsets, then the child at the offset
+    return 8 + instance.visit(children[childIndex], valueOffsets[index]);
+};
+
+/** @ignore */
+const getSparseUnionByteLength = <T extends SparseUnion>({ children }: Data<T>, index: number): number => {
+    // 4 for the typeId, then once each for the children at this index
+    return 4 + instance.visitMany(children, children.map(() => index)).reduce(sum, 0);
+};
+
+GetByteLengthVisitor.prototype.visitUtf8 = getUtf8ByteLength;
+GetByteLengthVisitor.prototype.visitBinary = getBinaryByteLength;
+GetByteLengthVisitor.prototype.visitList = getListByteLength;
+GetByteLengthVisitor.prototype.visitFixedSizeList = getFixedSizeListByteLength;
+GetByteLengthVisitor.prototype.visitUnion = getUnionByteLength;
+GetByteLengthVisitor.prototype.visitDenseUnion = getDenseUnionByteLength;
+GetByteLengthVisitor.prototype.visitSparseUnion = getSparseUnionByteLength;
+
+/** @ignore */
+export const instance = new GetByteLengthVisitor();
diff --git a/igv_component/node_modules/apache-arrow/src/visitor/get.ts b/igv_component/node_modules/apache-arrow/src/visitor/get.ts
new file mode 100644
index 0000000000000000000000000000000000000000..12f8325470bacd32d872e8b0f9da5ce67b5f1e9a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/visitor/get.ts
@@ -0,0 +1,335 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Data } from '../data.js';
+import { BN } from '../util/bn.js';
+import { Vector } from '../vector.js';
+import { Visitor } from '../visitor.js';
+import { MapRow } from '../row/map.js';
+import { StructRow, StructRowProxy } from '../row/struct.js';
+import { decodeUtf8 } from '../util/utf8.js';
+import { TypeToDataType } from '../interfaces.js';
+import { uint16ToFloat64 } from '../util/math.js';
+import { Type, UnionMode, Precision, DateUnit, TimeUnit, IntervalUnit } from '../enum.js';
+import {
+    DataType, Dictionary,
+    Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct,
+    Float, Float16, Float32, Float64,
+    Int, Uint8, Uint16, Uint32, Uint64, Int8, Int16, Int32, Int64,
+    Date_, DateDay, DateMillisecond,
+    Interval, IntervalDayTime, IntervalYearMonth,
+    Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond,
+    Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond,
+    Union, DenseUnion, SparseUnion,
+} from '../type.js';
+
+/** @ignore */
+export interface GetVisitor extends Visitor {
+    visit<T extends DataType>(node: Data<T>, index: number): T['TValue'] | null;
+    visitMany<T extends DataType>(nodes: Data<T>[], indices: number[]): (T['TValue'] | null)[];
+    getVisitFn<T extends DataType>(node: Vector<T> | Data<T> | T): (data: Data<T>, index: number) => T['TValue'] | null;
+    getVisitFn<T extends Type>(node: T): (data: Data<TypeToDataType<T>>, index: number) => TypeToDataType<T>['TValue'];
+    visitNull<T extends Null>(data: Data<T>, index: number): T['TValue'] | null;
+    visitBool<T extends Bool>(data: Data<T>, index: number): T['TValue'] | null;
+    visitInt<T extends Int>(data: Data<T>, index: number): T['TValue'] | null;
+    visitInt8<T extends Int8>(data: Data<T>, index: number): T['TValue'] | null;
+    visitInt16<T extends Int16>(data: Data<T>, index: number): T['TValue'] | null;
+    visitInt32<T extends Int32>(data: Data<T>, index: number): T['TValue'] | null;
+    visitInt64<T extends Int64>(data: Data<T>, index: number): T['TValue'] | null;
+    visitUint8<T extends Uint8>(data: Data<T>, index: number): T['TValue'] | null;
+    visitUint16<T extends Uint16>(data: Data<T>, index: number): T['TValue'] | null;
+    visitUint32<T extends Uint32>(data: Data<T>, index: number): T['TValue'] | null;
+    visitUint64<T extends Uint64>(data: Data<T>, index: number): T['TValue'] | null;
+    visitFloat<T extends Float>(data: Data<T>, index: number): T['TValue'] | null;
+    visitFloat16<T extends Float16>(data: Data<T>, index: number): T['TValue'] | null;
+    visitFloat32<T extends Float32>(data: Data<T>, index: number): T['TValue'] | null;
+    visitFloat64<T extends Float64>(data: Data<T>, index: number): T['TValue'] | null;
+    visitUtf8<T extends Utf8>(data: Data<T>, index: number): T['TValue'] | null;
+    visitBinary<T extends Binary>(data: Data<T>, index: number): T['TValue'] | null;
+    visitFixedSizeBinary<T extends FixedSizeBinary>(data: Data<T>, index: number): T['TValue'] | null;
+    visitDate<T extends Date_>(data: Data<T>, index: number): T['TValue'] | null;
+    visitDateDay<T extends DateDay>(data: Data<T>, index: number): T['TValue'] | null;
+    visitDateMillisecond<T extends DateMillisecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimestamp<T extends Timestamp>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimestampSecond<T extends TimestampSecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimestampMillisecond<T extends TimestampMillisecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimestampMicrosecond<T extends TimestampMicrosecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimestampNanosecond<T extends TimestampNanosecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTime<T extends Time>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimeSecond<T extends TimeSecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimeMillisecond<T extends TimeMillisecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimeMicrosecond<T extends TimeMicrosecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimeNanosecond<T extends TimeNanosecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitDecimal<T extends Decimal>(data: Data<T>, index: number): T['TValue'] | null;
+    visitList<T extends List>(data: Data<T>, index: number): T['TValue'] | null;
+    visitStruct<T extends Struct>(data: Data<T>, index: number): T['TValue'] | null;
+    visitUnion<T extends Union>(data: Data<T>, index: number): T['TValue'] | null;
+    visitDenseUnion<T extends DenseUnion>(data: Data<T>, index: number): T['TValue'] | null;
+    visitSparseUnion<T extends SparseUnion>(data: Data<T>, index: number): T['TValue'] | null;
+    visitDictionary<T extends Dictionary>(data: Data<T>, index: number): T['TValue'] | null;
+    visitInterval<T extends Interval>(data: Data<T>, index: number): T['TValue'] | null;
+    visitIntervalDayTime<T extends IntervalDayTime>(data: Data<T>, index: number): T['TValue'] | null;
+    visitIntervalYearMonth<T extends IntervalYearMonth>(data: Data<T>, index: number): T['TValue'] | null;
+    visitFixedSizeList<T extends FixedSizeList>(data: Data<T>, index: number): T['TValue'] | null;
+    visitMap<T extends Map_>(data: Data<T>, index: number): T['TValue'] | null;
+}
+
+/** @ignore */
+export class GetVisitor extends Visitor { }
+
+/** @ignore */
+function wrapGet<T extends DataType>(fn: (data: Data<T>, _1: any) => any) {
+    return (data: Data<T>, _1: any) => data.getValid(_1) ? fn(data, _1) : null;
+}
+
+/** @ignore */const epochDaysToMs = (data: Int32Array, index: number) => 86400000 * data[index];
+/** @ignore */const epochMillisecondsLongToMs = (data: Int32Array, index: number) => 4294967296 * (data[index + 1]) + (data[index] >>> 0);
+/** @ignore */const epochMicrosecondsLongToMs = (data: Int32Array, index: number) => 4294967296 * (data[index + 1] / 1000) + ((data[index] >>> 0) / 1000);
+/** @ignore */const epochNanosecondsLongToMs = (data: Int32Array, index: number) => 4294967296 * (data[index + 1] / 1000000) + ((data[index] >>> 0) / 1000000);
+
+/** @ignore */const epochMillisecondsToDate = (epochMs: number) => new Date(epochMs);
+/** @ignore */const epochDaysToDate = (data: Int32Array, index: number) => epochMillisecondsToDate(epochDaysToMs(data, index));
+/** @ignore */const epochMillisecondsLongToDate = (data: Int32Array, index: number) => epochMillisecondsToDate(epochMillisecondsLongToMs(data, index));
+
+/** @ignore */
+const getNull = <T extends Null>(_data: Data<T>, _index: number): T['TValue'] => null;
+/** @ignore */
+const getVariableWidthBytes = (values: Uint8Array, valueOffsets: Int32Array, index: number) => {
+    if (index + 1 >= valueOffsets.length) {
+        return null as any;
+    }
+    const x = valueOffsets[index];
+    const y = valueOffsets[index + 1];
+    return values.subarray(x, y);
+};
+
+/** @ignore */
+const getBool = <T extends Bool>({ offset, values }: Data<T>, index: number): T['TValue'] => {
+    const idx = offset + index;
+    const byte = values[idx >> 3];
+    return (byte & 1 << (idx % 8)) !== 0;
+};
+
+/** @ignore */
+type Numeric1X = Int8 | Int16 | Int32 | Uint8 | Uint16 | Uint32 | Float32 | Float64;
+/** @ignore */
+type Numeric2X = Int64 | Uint64;
+
+/** @ignore */
+const getDateDay = <T extends DateDay>({ values }: Data<T>, index: number): T['TValue'] => epochDaysToDate(values, index);
+/** @ignore */
+const getDateMillisecond = <T extends DateMillisecond>({ values }: Data<T>, index: number): T['TValue'] => epochMillisecondsLongToDate(values, index * 2);
+/** @ignore */
+const getNumeric = <T extends Numeric1X>({ stride, values }: Data<T>, index: number): T['TValue'] => values[stride * index];
+/** @ignore */
+const getFloat16 = <T extends Float16>({ stride, values }: Data<T>, index: number): T['TValue'] => uint16ToFloat64(values[stride * index]);
+/** @ignore */
+const getBigInts = <T extends Numeric2X>({ values }: Data<T>, index: number): T['TValue'] => values[index];
+/** @ignore */
+const getFixedSizeBinary = <T extends FixedSizeBinary>({ stride, values }: Data<T>, index: number): T['TValue'] => values.subarray(stride * index, stride * (index + 1));
+
+/** @ignore */
+const getBinary = <T extends Binary>({ values, valueOffsets }: Data<T>, index: number): T['TValue'] => getVariableWidthBytes(values, valueOffsets, index);
+/** @ignore */
+const getUtf8 = <T extends Utf8>({ values, valueOffsets }: Data<T>, index: number): T['TValue'] => {
+    const bytes = getVariableWidthBytes(values, valueOffsets, index);
+    return bytes !== null ? decodeUtf8(bytes) : null as any;
+};
+
+/* istanbul ignore next */
+/** @ignore */
+const getInt = <T extends Int>({ values }: Data<T>, index: number): T['TValue'] => values[index];
+
+/* istanbul ignore next */
+/** @ignore */
+const getFloat = <T extends Float>({ type, values }: Data<T>, index: number): T['TValue'] => (
+    type.precision !== Precision.HALF ? values[index] : uint16ToFloat64(values[index])
+);
+
+/* istanbul ignore next */
+/** @ignore */
+const getDate = <T extends Date_>(data: Data<T>, index: number): T['TValue'] => (
+    data.type.unit === DateUnit.DAY
+        ? getDateDay(data as Data<DateDay>, index)
+        : getDateMillisecond(data as Data<DateMillisecond>, index)
+);
+
+/** @ignore */
+const getTimestampSecond = <T extends TimestampSecond>({ values }: Data<T>, index: number): T['TValue'] => 1000 * epochMillisecondsLongToMs(values, index * 2);
+/** @ignore */
+const getTimestampMillisecond = <T extends TimestampMillisecond>({ values }: Data<T>, index: number): T['TValue'] => epochMillisecondsLongToMs(values, index * 2);
+/** @ignore */
+const getTimestampMicrosecond = <T extends TimestampMicrosecond>({ values }: Data<T>, index: number): T['TValue'] => epochMicrosecondsLongToMs(values, index * 2);
+/** @ignore */
+const getTimestampNanosecond = <T extends TimestampNanosecond>({ values }: Data<T>, index: number): T['TValue'] => epochNanosecondsLongToMs(values, index * 2);
+/* istanbul ignore next */
+/** @ignore */
+const getTimestamp = <T extends Timestamp>(data: Data<T>, index: number): T['TValue'] => {
+    switch (data.type.unit) {
+        case TimeUnit.SECOND: return getTimestampSecond(data as Data<TimestampSecond>, index);
+        case TimeUnit.MILLISECOND: return getTimestampMillisecond(data as Data<TimestampMillisecond>, index);
+        case TimeUnit.MICROSECOND: return getTimestampMicrosecond(data as Data<TimestampMicrosecond>, index);
+        case TimeUnit.NANOSECOND: return getTimestampNanosecond(data as Data<TimestampNanosecond>, index);
+    }
+};
+
+/** @ignore */
+const getTimeSecond = <T extends TimeSecond>({ values }: Data<T>, index: number): T['TValue'] => values[index];
+/** @ignore */
+const getTimeMillisecond = <T extends TimeMillisecond>({ values }: Data<T>, index: number): T['TValue'] => values[index];
+/** @ignore */
+const getTimeMicrosecond = <T extends TimeMicrosecond>({ values }: Data<T>, index: number): T['TValue'] => values[index];
+/** @ignore */
+const getTimeNanosecond = <T extends TimeNanosecond>({ values }: Data<T>, index: number): T['TValue'] => values[index];
+/* istanbul ignore next */
+/** @ignore */
+const getTime = <T extends Time>(data: Data<T>, index: number): T['TValue'] => {
+    switch (data.type.unit) {
+        case TimeUnit.SECOND: return getTimeSecond(data as Data<TimeSecond>, index);
+        case TimeUnit.MILLISECOND: return getTimeMillisecond(data as Data<TimeMillisecond>, index);
+        case TimeUnit.MICROSECOND: return getTimeMicrosecond(data as Data<TimeMicrosecond>, index);
+        case TimeUnit.NANOSECOND: return getTimeNanosecond(data as Data<TimeNanosecond>, index);
+    }
+};
+
+/** @ignore */
+const getDecimal = <T extends Decimal>({ values, stride }: Data<T>, index: number): T['TValue'] => BN.decimal(values.subarray(stride * index, stride * (index + 1)));
+
+/** @ignore */
+const getList = <T extends List>(data: Data<T>, index: number): T['TValue'] => {
+    const { valueOffsets, stride, children } = data;
+    const { [index * stride]: begin, [index * stride + 1]: end } = valueOffsets;
+    const child: Data<T['valueType']> = children[0];
+    const slice = child.slice(begin, end - begin);
+    return new Vector([slice]) as T['TValue'];
+};
+
+/** @ignore */
+const getMap = <T extends Map_>(data: Data<T>, index: number): T['TValue'] => {
+    const { valueOffsets, children } = data;
+    const { [index]: begin, [index + 1]: end } = valueOffsets;
+    const child = children[0] as Data<T['childType']>;
+    return new MapRow(child.slice(begin, end - begin));
+};
+
+/** @ignore */
+const getStruct = <T extends Struct>(data: Data<T>, index: number): T['TValue'] => {
+    return new StructRow(data, index) as StructRowProxy<T['TValue']>;
+};
+
+/* istanbul ignore next */
+/** @ignore */
+const getUnion = <
+    D extends Data<Union> | Data<DenseUnion> | Data<SparseUnion>
+>(data: D, index: number): D['TValue'] => {
+    return data.type.mode === UnionMode.Dense ?
+        getDenseUnion(data as Data<DenseUnion>, index) :
+        getSparseUnion(data as Data<SparseUnion>, index);
+};
+
+/** @ignore */
+const getDenseUnion = <T extends DenseUnion>(data: Data<T>, index: number): T['TValue'] => {
+    const childIndex = data.type.typeIdToChildIndex[data.typeIds[index]];
+    const child = data.children[childIndex];
+    return instance.visit(child, data.valueOffsets[index]);
+};
+
+/** @ignore */
+const getSparseUnion = <T extends SparseUnion>(data: Data<T>, index: number): T['TValue'] => {
+    const childIndex = data.type.typeIdToChildIndex[data.typeIds[index]];
+    const child = data.children[childIndex];
+    return instance.visit(child, index);
+};
+
+/** @ignore */
+const getDictionary = <T extends Dictionary>(data: Data<T>, index: number): T['TValue'] => {
+    return data.dictionary?.get(data.values[index]);
+};
+
+/* istanbul ignore next */
+/** @ignore */
+const getInterval = <T extends Interval>(data: Data<T>, index: number): T['TValue'] =>
+    (data.type.unit === IntervalUnit.DAY_TIME)
+        ? getIntervalDayTime(data as Data<IntervalDayTime>, index)
+        : getIntervalYearMonth(data as Data<IntervalYearMonth>, index);
+
+/** @ignore */
+const getIntervalDayTime = <T extends IntervalDayTime>({ values }: Data<T>, index: number): T['TValue'] => values.subarray(2 * index, 2 * (index + 1));
+
+/** @ignore */
+const getIntervalYearMonth = <T extends IntervalYearMonth>({ values }: Data<T>, index: number): T['TValue'] => {
+    const interval = values[index];
+    const int32s = new Int32Array(2);
+    int32s[0] = Math.trunc(interval / 12); /* years */
+    int32s[1] = Math.trunc(interval % 12); /* months */
+    return int32s;
+};
+
+/** @ignore */
+const getFixedSizeList = <T extends FixedSizeList>(data: Data<T>, index: number): T['TValue'] => {
+    const { stride, children } = data;
+    const child: Data<T['valueType']> = children[0];
+    const slice = child.slice(index * stride, stride);
+    return new Vector([slice]);
+};
+
+GetVisitor.prototype.visitNull = wrapGet(getNull);
+GetVisitor.prototype.visitBool = wrapGet(getBool);
+GetVisitor.prototype.visitInt = wrapGet(getInt);
+GetVisitor.prototype.visitInt8 = wrapGet(getNumeric);
+GetVisitor.prototype.visitInt16 = wrapGet(getNumeric);
+GetVisitor.prototype.visitInt32 = wrapGet(getNumeric);
+GetVisitor.prototype.visitInt64 = wrapGet(getBigInts);
+GetVisitor.prototype.visitUint8 = wrapGet(getNumeric);
+GetVisitor.prototype.visitUint16 = wrapGet(getNumeric);
+GetVisitor.prototype.visitUint32 = wrapGet(getNumeric);
+GetVisitor.prototype.visitUint64 = wrapGet(getBigInts);
+GetVisitor.prototype.visitFloat = wrapGet(getFloat);
+GetVisitor.prototype.visitFloat16 = wrapGet(getFloat16);
+GetVisitor.prototype.visitFloat32 = wrapGet(getNumeric);
+GetVisitor.prototype.visitFloat64 = wrapGet(getNumeric);
+GetVisitor.prototype.visitUtf8 = wrapGet(getUtf8);
+GetVisitor.prototype.visitBinary = wrapGet(getBinary);
+GetVisitor.prototype.visitFixedSizeBinary = wrapGet(getFixedSizeBinary);
+GetVisitor.prototype.visitDate = wrapGet(getDate);
+GetVisitor.prototype.visitDateDay = wrapGet(getDateDay);
+GetVisitor.prototype.visitDateMillisecond = wrapGet(getDateMillisecond);
+GetVisitor.prototype.visitTimestamp = wrapGet(getTimestamp);
+GetVisitor.prototype.visitTimestampSecond = wrapGet(getTimestampSecond);
+GetVisitor.prototype.visitTimestampMillisecond = wrapGet(getTimestampMillisecond);
+GetVisitor.prototype.visitTimestampMicrosecond = wrapGet(getTimestampMicrosecond);
+GetVisitor.prototype.visitTimestampNanosecond = wrapGet(getTimestampNanosecond);
+GetVisitor.prototype.visitTime = wrapGet(getTime);
+GetVisitor.prototype.visitTimeSecond = wrapGet(getTimeSecond);
+GetVisitor.prototype.visitTimeMillisecond = wrapGet(getTimeMillisecond);
+GetVisitor.prototype.visitTimeMicrosecond = wrapGet(getTimeMicrosecond);
+GetVisitor.prototype.visitTimeNanosecond = wrapGet(getTimeNanosecond);
+GetVisitor.prototype.visitDecimal = wrapGet(getDecimal);
+GetVisitor.prototype.visitList = wrapGet(getList);
+GetVisitor.prototype.visitStruct = wrapGet(getStruct);
+GetVisitor.prototype.visitUnion = wrapGet(getUnion);
+GetVisitor.prototype.visitDenseUnion = wrapGet(getDenseUnion);
+GetVisitor.prototype.visitSparseUnion = wrapGet(getSparseUnion);
+GetVisitor.prototype.visitDictionary = wrapGet(getDictionary);
+GetVisitor.prototype.visitInterval = wrapGet(getInterval);
+GetVisitor.prototype.visitIntervalDayTime = wrapGet(getIntervalDayTime);
+GetVisitor.prototype.visitIntervalYearMonth = wrapGet(getIntervalYearMonth);
+GetVisitor.prototype.visitFixedSizeList = wrapGet(getFixedSizeList);
+GetVisitor.prototype.visitMap = wrapGet(getMap);
+
+/** @ignore */
+export const instance = new GetVisitor();
diff --git a/igv_component/node_modules/apache-arrow/src/visitor/indexof.ts b/igv_component/node_modules/apache-arrow/src/visitor/indexof.ts
new file mode 100644
index 0000000000000000000000000000000000000000..93b4c0c495ca9b32ce081abd8cbd9e1481f41f34
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/visitor/indexof.ts
@@ -0,0 +1,186 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Data } from '../data.js';
+import { Type } from '../enum.js';
+import { Visitor } from '../visitor.js';
+import { instance as getVisitor } from './get.js';
+import { TypeToDataType } from '../interfaces.js';
+import { getBool, BitIterator } from '../util/bit.js';
+import { createElementComparator } from '../util/vector.js';
+import {
+    DataType, Dictionary,
+    Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct,
+    Float, Float16, Float32, Float64,
+    Int, Uint8, Uint16, Uint32, Uint64, Int8, Int16, Int32, Int64,
+    Date_, DateDay, DateMillisecond,
+    Interval, IntervalDayTime, IntervalYearMonth,
+    Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond,
+    Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond,
+    Union, DenseUnion, SparseUnion,
+} from '../type.js';
+
+/** @ignore */
+export interface IndexOfVisitor extends Visitor {
+    visit<T extends Data>(node: T, value: T['TValue'] | null, index?: number): number;
+    visitMany<T extends Data>(nodes: T[], values: (T['TValue'] | null)[], indices: (number | undefined)[]): number[];
+    getVisitFn<T extends DataType>(node: Data<T> | T): (data: Data<T>, value: T['TValue'] | null, index?: number) => number;
+    getVisitFn<T extends Type>(node: T): (data: Data<TypeToDataType<T>>, value: TypeToDataType<T>['TValue'] | null, index?: number) => number;
+    visitNull<T extends Null>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitBool<T extends Bool>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitInt<T extends Int>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitInt8<T extends Int8>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitInt16<T extends Int16>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitInt32<T extends Int32>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitInt64<T extends Int64>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitUint8<T extends Uint8>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitUint16<T extends Uint16>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitUint32<T extends Uint32>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitUint64<T extends Uint64>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitFloat<T extends Float>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitFloat16<T extends Float16>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitFloat32<T extends Float32>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitFloat64<T extends Float64>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitUtf8<T extends Utf8>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitBinary<T extends Binary>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitFixedSizeBinary<T extends FixedSizeBinary>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitDate<T extends Date_>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitDateDay<T extends DateDay>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitDateMillisecond<T extends DateMillisecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimestamp<T extends Timestamp>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimestampSecond<T extends TimestampSecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimestampMillisecond<T extends TimestampMillisecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimestampMicrosecond<T extends TimestampMicrosecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimestampNanosecond<T extends TimestampNanosecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTime<T extends Time>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimeSecond<T extends TimeSecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimeMillisecond<T extends TimeMillisecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimeMicrosecond<T extends TimeMicrosecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimeNanosecond<T extends TimeNanosecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitDecimal<T extends Decimal>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitList<T extends List>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitStruct<T extends Struct>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitUnion<T extends Union>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitDenseUnion<T extends DenseUnion>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitSparseUnion<T extends SparseUnion>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitDictionary<T extends Dictionary>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitInterval<T extends Interval>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitIntervalDayTime<T extends IntervalDayTime>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitIntervalYearMonth<T extends IntervalYearMonth>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitFixedSizeList<T extends FixedSizeList>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitMap<T extends Map_>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+}
+
+/** @ignore */
+export class IndexOfVisitor extends Visitor { }
+
+/** @ignore */
+function nullIndexOf(data: Data<Null>, searchElement?: null) {
+    // if you're looking for nulls and the vector isn't empty, we've got 'em!
+    return searchElement === null && data.length > 0 ? 0 : -1;
+}
+
+/** @ignore */
+function indexOfNull<T extends DataType>(data: Data<T>, fromIndex?: number): number {
+    const { nullBitmap } = data;
+    if (!nullBitmap || data.nullCount <= 0) {
+        return -1;
+    }
+    let i = 0;
+    for (const isValid of new BitIterator(nullBitmap, data.offset + (fromIndex || 0), data.length, nullBitmap, getBool)) {
+        if (!isValid) { return i; }
+        ++i;
+    }
+    return -1;
+}
+
+/** @ignore */
+function indexOfValue<T extends DataType>(data: Data<T>, searchElement?: T['TValue'] | null, fromIndex?: number): number {
+    if (searchElement === undefined) { return -1; }
+    if (searchElement === null) { return indexOfNull(data, fromIndex); }
+    const get = getVisitor.getVisitFn(data);
+    const compare = createElementComparator(searchElement);
+    for (let i = (fromIndex || 0) - 1, n = data.length; ++i < n;) {
+        if (compare(get(data, i))) {
+            return i;
+        }
+    }
+    return -1;
+}
+
+/** @ignore */
+function indexOfUnion<T extends DataType>(data: Data<T>, searchElement?: T['TValue'] | null, fromIndex?: number): number {
+    // Unions are special -- they do have a nullBitmap, but so can their children.
+    // If the searchElement is null, we don't know whether it came from the Union's
+    // bitmap or one of its childrens'. So we don't interrogate the Union's bitmap,
+    // since that will report the wrong index if a child has a null before the Union.
+    const get = getVisitor.getVisitFn(data);
+    const compare = createElementComparator(searchElement);
+    for (let i = (fromIndex || 0) - 1, n = data.length; ++i < n;) {
+        if (compare(get(data, i))) {
+            return i;
+        }
+    }
+    return -1;
+}
+
+IndexOfVisitor.prototype.visitNull = nullIndexOf;
+IndexOfVisitor.prototype.visitBool = indexOfValue;
+IndexOfVisitor.prototype.visitInt = indexOfValue;
+IndexOfVisitor.prototype.visitInt8 = indexOfValue;
+IndexOfVisitor.prototype.visitInt16 = indexOfValue;
+IndexOfVisitor.prototype.visitInt32 = indexOfValue;
+IndexOfVisitor.prototype.visitInt64 = indexOfValue;
+IndexOfVisitor.prototype.visitUint8 = indexOfValue;
+IndexOfVisitor.prototype.visitUint16 = indexOfValue;
+IndexOfVisitor.prototype.visitUint32 = indexOfValue;
+IndexOfVisitor.prototype.visitUint64 = indexOfValue;
+IndexOfVisitor.prototype.visitFloat = indexOfValue;
+IndexOfVisitor.prototype.visitFloat16 = indexOfValue;
+IndexOfVisitor.prototype.visitFloat32 = indexOfValue;
+IndexOfVisitor.prototype.visitFloat64 = indexOfValue;
+IndexOfVisitor.prototype.visitUtf8 = indexOfValue;
+IndexOfVisitor.prototype.visitBinary = indexOfValue;
+IndexOfVisitor.prototype.visitFixedSizeBinary = indexOfValue;
+IndexOfVisitor.prototype.visitDate = indexOfValue;
+IndexOfVisitor.prototype.visitDateDay = indexOfValue;
+IndexOfVisitor.prototype.visitDateMillisecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimestamp = indexOfValue;
+IndexOfVisitor.prototype.visitTimestampSecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimestampMillisecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimestampMicrosecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimestampNanosecond = indexOfValue;
+IndexOfVisitor.prototype.visitTime = indexOfValue;
+IndexOfVisitor.prototype.visitTimeSecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimeMillisecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimeMicrosecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimeNanosecond = indexOfValue;
+IndexOfVisitor.prototype.visitDecimal = indexOfValue;
+IndexOfVisitor.prototype.visitList = indexOfValue;
+IndexOfVisitor.prototype.visitStruct = indexOfValue;
+IndexOfVisitor.prototype.visitUnion = indexOfValue;
+IndexOfVisitor.prototype.visitDenseUnion = indexOfUnion;
+IndexOfVisitor.prototype.visitSparseUnion = indexOfUnion;
+IndexOfVisitor.prototype.visitDictionary = indexOfValue;
+IndexOfVisitor.prototype.visitInterval = indexOfValue;
+IndexOfVisitor.prototype.visitIntervalDayTime = indexOfValue;
+IndexOfVisitor.prototype.visitIntervalYearMonth = indexOfValue;
+IndexOfVisitor.prototype.visitFixedSizeList = indexOfValue;
+IndexOfVisitor.prototype.visitMap = indexOfValue;
+
+/** @ignore */
+export const instance = new IndexOfVisitor();
diff --git a/igv_component/node_modules/apache-arrow/src/visitor/iterator.ts b/igv_component/node_modules/apache-arrow/src/visitor/iterator.ts
new file mode 100644
index 0000000000000000000000000000000000000000..48021a78e86f661c6b4ff7db6143e75a1d970996
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/visitor/iterator.ts
@@ -0,0 +1,184 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Vector } from '../vector.js';
+import { Visitor } from '../visitor.js';
+import { Type, Precision } from '../enum.js';
+import { TypeToDataType } from '../interfaces.js';
+import {
+    DataType, Dictionary,
+    Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct,
+    Float, Float16, Float32, Float64,
+    Int, Uint8, Uint16, Uint32, Uint64, Int8, Int16, Int32, Int64,
+    Date_, DateDay, DateMillisecond,
+    Interval, IntervalDayTime, IntervalYearMonth,
+    Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond,
+    Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond,
+    Union, DenseUnion, SparseUnion,
+} from '../type.js';
+import { ChunkedIterator } from '../util/chunk.js';
+
+/** @ignore */
+export interface IteratorVisitor extends Visitor {
+    visit<T extends Vector>(node: T): IterableIterator<T['TValue'] | null>;
+    visitMany<T extends Vector>(nodes: T[]): IterableIterator<T['TValue'] | null>[];
+    getVisitFn<T extends DataType>(node: Vector<T> | T): (vector: Vector<T>) => IterableIterator<T['TValue'] | null>;
+    getVisitFn<T extends Type>(node: T): (vector: Vector<TypeToDataType<T>>) => IterableIterator<TypeToDataType<T>['TValue'] | null>;
+    visitNull<T extends Null>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitBool<T extends Bool>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitInt<T extends Int>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitInt8<T extends Int8>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitInt16<T extends Int16>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitInt32<T extends Int32>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitInt64<T extends Int64>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitUint8<T extends Uint8>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitUint16<T extends Uint16>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitUint32<T extends Uint32>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitUint64<T extends Uint64>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitFloat<T extends Float>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitFloat16<T extends Float16>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitFloat32<T extends Float32>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitFloat64<T extends Float64>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitUtf8<T extends Utf8>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitBinary<T extends Binary>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitFixedSizeBinary<T extends FixedSizeBinary>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitDate<T extends Date_>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitDateDay<T extends DateDay>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitDateMillisecond<T extends DateMillisecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimestamp<T extends Timestamp>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimestampSecond<T extends TimestampSecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimestampMillisecond<T extends TimestampMillisecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimestampMicrosecond<T extends TimestampMicrosecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimestampNanosecond<T extends TimestampNanosecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTime<T extends Time>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimeSecond<T extends TimeSecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimeMillisecond<T extends TimeMillisecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimeMicrosecond<T extends TimeMicrosecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimeNanosecond<T extends TimeNanosecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitDecimal<T extends Decimal>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitList<T extends List>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitStruct<T extends Struct>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitUnion<T extends Union>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitDenseUnion<T extends DenseUnion>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitSparseUnion<T extends SparseUnion>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitDictionary<T extends Dictionary>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitInterval<T extends Interval>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitIntervalDayTime<T extends IntervalDayTime>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitIntervalYearMonth<T extends IntervalYearMonth>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitFixedSizeList<T extends FixedSizeList>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitMap<T extends Map_>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+}
+
+/** @ignore */
+export class IteratorVisitor extends Visitor { }
+
+/** @ignore */
+function vectorIterator<T extends DataType>(vector: Vector<T>): IterableIterator<T['TValue'] | null> {
+
+    const { type } = vector;
+
+    // Fast case, defer to native iterators if possible
+    if (vector.nullCount === 0 && vector.stride === 1 && (
+        (type.typeId === Type.Timestamp) ||
+        (type instanceof Int && (type as Int).bitWidth !== 64) ||
+        (type instanceof Time && (type as Time).bitWidth !== 64) ||
+        (type instanceof Float && (type as Float).precision !== Precision.HALF)
+    )) {
+        return new ChunkedIterator(vector.data.length, (chunkIndex) => {
+            const data = vector.data[chunkIndex];
+            return data.values.subarray(0, data.length)[Symbol.iterator]();
+        });
+    }
+
+    // Otherwise, iterate manually
+    let offset = 0;
+    return new ChunkedIterator(vector.data.length, (chunkIndex) => {
+        const data = vector.data[chunkIndex];
+        const length = data.length;
+        const inner = vector.slice(offset, offset + length);
+        offset += length;
+        return new VectorIterator(inner);
+    });
+}
+
+/** @ignore */
+class VectorIterator<T extends DataType> implements IterableIterator<T['TValue'] | null> {
+    private index = 0;
+
+    constructor(private vector: Vector<T>) { }
+
+    next(): IteratorResult<T['TValue'] | null> {
+        if (this.index < this.vector.length) {
+            return {
+                value: this.vector.get(this.index++)
+            };
+        }
+
+        return { done: true, value: null };
+    }
+
+    [Symbol.iterator]() {
+        return this;
+    }
+}
+
+IteratorVisitor.prototype.visitNull = vectorIterator;
+IteratorVisitor.prototype.visitBool = vectorIterator;
+IteratorVisitor.prototype.visitInt = vectorIterator;
+IteratorVisitor.prototype.visitInt8 = vectorIterator;
+IteratorVisitor.prototype.visitInt16 = vectorIterator;
+IteratorVisitor.prototype.visitInt32 = vectorIterator;
+IteratorVisitor.prototype.visitInt64 = vectorIterator;
+IteratorVisitor.prototype.visitUint8 = vectorIterator;
+IteratorVisitor.prototype.visitUint16 = vectorIterator;
+IteratorVisitor.prototype.visitUint32 = vectorIterator;
+IteratorVisitor.prototype.visitUint64 = vectorIterator;
+IteratorVisitor.prototype.visitFloat = vectorIterator;
+IteratorVisitor.prototype.visitFloat16 = vectorIterator;
+IteratorVisitor.prototype.visitFloat32 = vectorIterator;
+IteratorVisitor.prototype.visitFloat64 = vectorIterator;
+IteratorVisitor.prototype.visitUtf8 = vectorIterator;
+IteratorVisitor.prototype.visitBinary = vectorIterator;
+IteratorVisitor.prototype.visitFixedSizeBinary = vectorIterator;
+IteratorVisitor.prototype.visitDate = vectorIterator;
+IteratorVisitor.prototype.visitDateDay = vectorIterator;
+IteratorVisitor.prototype.visitDateMillisecond = vectorIterator;
+IteratorVisitor.prototype.visitTimestamp = vectorIterator;
+IteratorVisitor.prototype.visitTimestampSecond = vectorIterator;
+IteratorVisitor.prototype.visitTimestampMillisecond = vectorIterator;
+IteratorVisitor.prototype.visitTimestampMicrosecond = vectorIterator;
+IteratorVisitor.prototype.visitTimestampNanosecond = vectorIterator;
+IteratorVisitor.prototype.visitTime = vectorIterator;
+IteratorVisitor.prototype.visitTimeSecond = vectorIterator;
+IteratorVisitor.prototype.visitTimeMillisecond = vectorIterator;
+IteratorVisitor.prototype.visitTimeMicrosecond = vectorIterator;
+IteratorVisitor.prototype.visitTimeNanosecond = vectorIterator;
+IteratorVisitor.prototype.visitDecimal = vectorIterator;
+IteratorVisitor.prototype.visitList = vectorIterator;
+IteratorVisitor.prototype.visitStruct = vectorIterator;
+IteratorVisitor.prototype.visitUnion = vectorIterator;
+IteratorVisitor.prototype.visitDenseUnion = vectorIterator;
+IteratorVisitor.prototype.visitSparseUnion = vectorIterator;
+IteratorVisitor.prototype.visitDictionary = vectorIterator;
+IteratorVisitor.prototype.visitInterval = vectorIterator;
+IteratorVisitor.prototype.visitIntervalDayTime = vectorIterator;
+IteratorVisitor.prototype.visitIntervalYearMonth = vectorIterator;
+IteratorVisitor.prototype.visitFixedSizeList = vectorIterator;
+IteratorVisitor.prototype.visitMap = vectorIterator;
+
+/** @ignore */
+export const instance = new IteratorVisitor();
diff --git a/igv_component/node_modules/apache-arrow/src/visitor/jsontypeassembler.ts b/igv_component/node_modules/apache-arrow/src/visitor/jsontypeassembler.ts
new file mode 100644
index 0000000000000000000000000000000000000000..9aae1c296893df2623f8151f78ca890ef1d762b3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/visitor/jsontypeassembler.ts
@@ -0,0 +1,91 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import * as type from '../type.js';
+import { Visitor } from '../visitor.js';
+import { Type as ArrowType } from '../fb/type.js';
+import { Precision, DateUnit, TimeUnit, IntervalUnit, UnionMode } from '../enum.js';
+
+/** @ignore */
+export interface JSONTypeAssembler extends Visitor {
+    visit<T extends type.DataType>(node: T): Record<string, unknown> | undefined;
+}
+
+/** @ignore */
+export class JSONTypeAssembler extends Visitor {
+    public visit<T extends type.DataType>(node: T): Record<string, unknown> | undefined {
+        return node == null ? undefined : super.visit(node);
+    }
+    public visitNull<T extends type.Null>({ typeId }: T) {
+        return { 'name': ArrowType[typeId].toLowerCase() };
+    }
+    public visitInt<T extends type.Int>({ typeId, bitWidth, isSigned }: T) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'bitWidth': bitWidth, 'isSigned': isSigned };
+    }
+    public visitFloat<T extends type.Float>({ typeId, precision }: T) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'precision': Precision[precision] };
+    }
+    public visitBinary<T extends type.Binary>({ typeId }: T) {
+        return { 'name': ArrowType[typeId].toLowerCase() };
+    }
+    public visitBool<T extends type.Bool>({ typeId }: T) {
+        return { 'name': ArrowType[typeId].toLowerCase() };
+    }
+    public visitUtf8<T extends type.Utf8>({ typeId }: T) {
+        return { 'name': ArrowType[typeId].toLowerCase() };
+    }
+    public visitDecimal<T extends type.Decimal>({ typeId, scale, precision, bitWidth }: T) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'scale': scale, 'precision': precision, 'bitWidth': bitWidth };
+    }
+    public visitDate<T extends type.Date_>({ typeId, unit }: T) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'unit': DateUnit[unit] };
+    }
+    public visitTime<T extends type.Time>({ typeId, unit, bitWidth }: T) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'unit': TimeUnit[unit], bitWidth };
+    }
+    public visitTimestamp<T extends type.Timestamp>({ typeId, timezone, unit }: T) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'unit': TimeUnit[unit], timezone };
+    }
+    public visitInterval<T extends type.Interval>({ typeId, unit }: T) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'unit': IntervalUnit[unit] };
+    }
+    public visitList<T extends type.List>({ typeId }: T) {
+        return { 'name': ArrowType[typeId].toLowerCase() };
+    }
+    public visitStruct<T extends type.Struct>({ typeId }: T) {
+        return { 'name': ArrowType[typeId].toLowerCase() };
+    }
+    public visitUnion<T extends type.Union>({ typeId, mode, typeIds }: T) {
+        return {
+            'name': ArrowType[typeId].toLowerCase(),
+            'mode': UnionMode[mode],
+            'typeIds': [...typeIds]
+        };
+    }
+    public visitDictionary<T extends type.Dictionary>(node: T) {
+        return this.visit(node.dictionary);
+    }
+    public visitFixedSizeBinary<T extends type.FixedSizeBinary>({ typeId, byteWidth }: T) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'byteWidth': byteWidth };
+    }
+    public visitFixedSizeList<T extends type.FixedSizeList>({ typeId, listSize }: T) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'listSize': listSize };
+    }
+    public visitMap<T extends type.Map_>({ typeId, keysSorted }: T) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'keysSorted': keysSorted };
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/visitor/jsonvectorassembler.ts b/igv_component/node_modules/apache-arrow/src/visitor/jsonvectorassembler.ts
new file mode 100644
index 0000000000000000000000000000000000000000..270e31a2c6ab78b182c6f485170ee179abb8c0e2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/visitor/jsonvectorassembler.ts
@@ -0,0 +1,176 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { BN } from '../util/bn.js';
+import { Data } from '../data.js';
+import { Field } from '../schema.js';
+import { Vector } from '../vector.js';
+import { Visitor } from '../visitor.js';
+import { BufferType } from '../enum.js';
+import { RecordBatch } from '../recordbatch.js';
+import { UnionMode, DateUnit, TimeUnit } from '../enum.js';
+import { BitIterator, getBit, getBool } from '../util/bit.js';
+import {
+    DataType,
+    Float, Int, Date_, Interval, Time, Timestamp, Union,
+    Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct, IntArray,
+} from '../type.js';
+
+/** @ignore */
+export interface JSONVectorAssembler extends Visitor {
+
+    visit<T extends DataType>(field: Field, node: Data<T>): Record<string, unknown>;
+    visitMany<T extends DataType>(fields: Field[], nodes: readonly Data<T>[]): Record<string, unknown>[];
+    getVisitFn<T extends DataType>(node: Vector<T> | Data<T>): (data: Data<T>) => { name: string; count: number; VALIDITY: (0 | 1)[]; DATA?: any[]; OFFSET?: number[]; TYPE?: number[]; children?: any[] };
+
+    visitNull<T extends Null>(data: Data<T>): Record<string, never>;
+    visitBool<T extends Bool>(data: Data<T>): { DATA: boolean[] };
+    visitInt<T extends Int>(data: Data<T>): { DATA: number[] | string[] };
+    visitFloat<T extends Float>(data: Data<T>): { DATA: number[] };
+    visitUtf8<T extends Utf8>(data: Data<T>): { DATA: string[]; OFFSET: number[] };
+    visitBinary<T extends Binary>(data: Data<T>): { DATA: string[]; OFFSET: number[] };
+    visitFixedSizeBinary<T extends FixedSizeBinary>(data: Data<T>): { DATA: string[] };
+    visitDate<T extends Date_>(data: Data<T>): { DATA: number[] };
+    visitTimestamp<T extends Timestamp>(data: Data<T>): { DATA: string[] };
+    visitTime<T extends Time>(data: Data<T>): { DATA: number[] };
+    visitDecimal<T extends Decimal>(data: Data<T>): { DATA: string[] };
+    visitList<T extends List>(data: Data<T>): { children: any[]; OFFSET: number[] };
+    visitStruct<T extends Struct>(data: Data<T>): { children: any[] };
+    visitUnion<T extends Union>(data: Data<T>): { children: any[]; TYPE: number[] };
+    visitInterval<T extends Interval>(data: Data<T>): { DATA: number[] };
+    visitFixedSizeList<T extends FixedSizeList>(data: Data<T>): { children: any[] };
+    visitMap<T extends Map_>(data: Data<T>): { children: any[] };
+}
+
+/** @ignore */
+export class JSONVectorAssembler extends Visitor {
+
+    /** @nocollapse */
+    public static assemble<T extends RecordBatch>(...batches: T[]) {
+        const assemlber = new JSONVectorAssembler();
+        return batches.map(({ schema, data }) => {
+            return assemlber.visitMany(schema.fields, data.children);
+        });
+    }
+
+    public visit<T extends DataType>({ name }: Field, data: Data<T>) {
+        const { length } = data;
+        const { offset, nullCount, nullBitmap } = data;
+        const type = DataType.isDictionary(data.type) ? data.type.indices : data.type;
+        const buffers = Object.assign([], data.buffers, { [BufferType.VALIDITY]: undefined });
+        return {
+            'name': name,
+            'count': length,
+            'VALIDITY': DataType.isNull(type) ? undefined
+                : nullCount <= 0 ? Array.from({ length }, () => 1)
+                    : [...new BitIterator(nullBitmap, offset, length, null, getBit)],
+            ...super.visit(data.clone(type, offset, length, 0, buffers))
+        };
+    }
+    public visitNull() { return {}; }
+    public visitBool<T extends Bool>({ values, offset, length }: Data<T>) {
+        return { 'DATA': [...new BitIterator(values, offset, length, null, getBool)] };
+    }
+    public visitInt<T extends Int>(data: Data<T>) {
+        return {
+            'DATA': data.type.bitWidth < 64
+                ? [...data.values]
+                : [...bigNumsToStrings(data.values, 2)]
+        };
+    }
+    public visitFloat<T extends Float>(data: Data<T>) {
+        return { 'DATA': [...data.values] };
+    }
+    public visitUtf8<T extends Utf8>(data: Data<T>) {
+        return { 'DATA': [...new Vector([data])], 'OFFSET': [...data.valueOffsets] };
+    }
+    public visitBinary<T extends Binary>(data: Data<T>) {
+        return { 'DATA': [...binaryToString(new Vector([data]))], OFFSET: [...data.valueOffsets] };
+    }
+    public visitFixedSizeBinary<T extends FixedSizeBinary>(data: Data<T>) {
+        return { 'DATA': [...binaryToString(new Vector([data]))] };
+    }
+    public visitDate<T extends Date_>(data: Data<T>) {
+        return {
+            'DATA': data.type.unit === DateUnit.DAY
+                ? [...data.values]
+                : [...bigNumsToStrings(data.values, 2)]
+        };
+    }
+    public visitTimestamp<T extends Timestamp>(data: Data<T>) {
+        return { 'DATA': [...bigNumsToStrings(data.values, 2)] };
+    }
+    public visitTime<T extends Time>(data: Data<T>) {
+        return {
+            'DATA': data.type.unit < TimeUnit.MICROSECOND
+                ? [...data.values]
+                : [...bigNumsToStrings(data.values, 2)]
+        };
+    }
+    public visitDecimal<T extends Decimal>(data: Data<T>) {
+        return { 'DATA': [...bigNumsToStrings(data.values, 4)] };
+    }
+    public visitList<T extends List>(data: Data<T>) {
+        return {
+            'OFFSET': [...data.valueOffsets],
+            'children': this.visitMany(data.type.children, data.children)
+        };
+    }
+    public visitStruct<T extends Struct>(data: Data<T>) {
+        return {
+            'children': this.visitMany(data.type.children, data.children)
+        };
+    }
+    public visitUnion<T extends Union>(data: Data<T>) {
+        return {
+            'TYPE': [...data.typeIds],
+            'OFFSET': data.type.mode === UnionMode.Dense ? [...data.valueOffsets] : undefined,
+            'children': this.visitMany(data.type.children, data.children)
+        };
+    }
+    public visitInterval<T extends Interval>(data: Data<T>) {
+        return { 'DATA': [...data.values] };
+    }
+    public visitFixedSizeList<T extends FixedSizeList>(data: Data<T>) {
+        return {
+            'children': this.visitMany(data.type.children, data.children)
+        };
+    }
+    public visitMap<T extends Map_>(data: Data<T>) {
+        return {
+            'OFFSET': [...data.valueOffsets],
+            'children': this.visitMany(data.type.children, data.children)
+        };
+    }
+}
+
+/** @ignore */
+function* binaryToString(vector: Vector<Binary> | Vector<FixedSizeBinary>) {
+    for (const octets of vector as Iterable<Uint8Array>) {
+        yield octets.reduce((str, byte) => {
+            return `${str}${('0' + (byte & 0xFF).toString(16)).slice(-2)}`;
+        }, '').toUpperCase();
+    }
+}
+
+/** @ignore */
+function* bigNumsToStrings(values: BigUint64Array | BigInt64Array | Uint32Array | Int32Array | IntArray, stride: number) {
+    const u32s = new Uint32Array(values.buffer);
+    for (let i = -1, n = u32s.length / stride; ++i < n;) {
+        yield `${BN.new(u32s.subarray((i + 0) * stride, (i + 1) * stride), false)}`;
+    }
+}
diff --git a/igv_component/node_modules/apache-arrow/src/visitor/set.ts b/igv_component/node_modules/apache-arrow/src/visitor/set.ts
new file mode 100644
index 0000000000000000000000000000000000000000..c2d4319911afebb4c8c83e3588f2ebb414d077ac
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/visitor/set.ts
@@ -0,0 +1,371 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Data } from '../data.js';
+import { Field } from '../schema.js';
+import { Vector } from '../vector.js';
+import { Visitor } from '../visitor.js';
+import { encodeUtf8 } from '../util/utf8.js';
+import { TypeToDataType } from '../interfaces.js';
+import { float64ToUint16 } from '../util/math.js';
+import { Type, UnionMode, Precision, DateUnit, TimeUnit, IntervalUnit } from '../enum.js';
+import {
+    DataType, Dictionary,
+    Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct,
+    Float, Float16, Float32, Float64,
+    Int, Uint8, Uint16, Uint32, Uint64, Int8, Int16, Int32, Int64,
+    Date_, DateDay, DateMillisecond,
+    Interval, IntervalDayTime, IntervalYearMonth,
+    Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond,
+    Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond,
+    Union, DenseUnion, SparseUnion,
+} from '../type.js';
+
+/** @ignore */
+export interface SetVisitor extends Visitor {
+    visit<T extends DataType>(node: Data<T>, index: number, value: T['TValue']): void;
+    visitMany<T extends DataType>(nodes: Data<T>[], indices: number[], values: T['TValue'][]): void[];
+    getVisitFn<T extends DataType>(node: Data<T> | T): (data: Data<T>, index: number, value: Data<T>['TValue']) => void;
+    getVisitFn<T extends Type>(node: T): (data: Data<TypeToDataType<T>>, index: number, value: TypeToDataType<T>['TValue']) => void;
+    visitNull<T extends Null>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitBool<T extends Bool>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitInt<T extends Int>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitInt8<T extends Int8>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitInt16<T extends Int16>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitInt32<T extends Int32>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitInt64<T extends Int64>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitUint8<T extends Uint8>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitUint16<T extends Uint16>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitUint32<T extends Uint32>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitUint64<T extends Uint64>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitFloat<T extends Float>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitFloat16<T extends Float16>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitFloat32<T extends Float32>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitFloat64<T extends Float64>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitUtf8<T extends Utf8>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitBinary<T extends Binary>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitFixedSizeBinary<T extends FixedSizeBinary>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitDate<T extends Date_>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitDateDay<T extends DateDay>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitDateMillisecond<T extends DateMillisecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimestamp<T extends Timestamp>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimestampSecond<T extends TimestampSecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimestampMillisecond<T extends TimestampMillisecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimestampMicrosecond<T extends TimestampMicrosecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimestampNanosecond<T extends TimestampNanosecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTime<T extends Time>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimeSecond<T extends TimeSecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimeMillisecond<T extends TimeMillisecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimeMicrosecond<T extends TimeMicrosecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimeNanosecond<T extends TimeNanosecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitDecimal<T extends Decimal>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitList<T extends List>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitStruct<T extends Struct>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitUnion<T extends Union>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitDenseUnion<T extends DenseUnion>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitSparseUnion<T extends SparseUnion>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitDictionary<T extends Dictionary>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitInterval<T extends Interval>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitIntervalDayTime<T extends IntervalDayTime>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitIntervalYearMonth<T extends IntervalYearMonth>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitFixedSizeList<T extends FixedSizeList>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitMap<T extends Map_>(data: Data<T>, index: number, value: T['TValue']): void;
+}
+
+/** @ignore */
+export class SetVisitor extends Visitor { }
+
+/** @ignore */
+function wrapSet<T extends DataType>(fn: (data: Data<T>, _1: any, _2: any) => void) {
+    return (data: Data<T>, _1: any, _2: any) => {
+        if (data.setValid(_1, _2 != null)) {
+            return fn(data, _1, _2);
+        }
+    };
+}
+
+/** @ignore */
+export const setEpochMsToDays = (data: Int32Array, index: number, epochMs: number) => { data[index] = Math.trunc(epochMs / 86400000); };
+/** @ignore */
+export const setEpochMsToMillisecondsLong = (data: Int32Array, index: number, epochMs: number) => {
+    data[index] = Math.trunc(epochMs % 4294967296);
+    data[index + 1] = Math.trunc(epochMs / 4294967296);
+};
+/** @ignore */
+export const setEpochMsToMicrosecondsLong = (data: Int32Array, index: number, epochMs: number) => {
+    data[index] = Math.trunc((epochMs * 1000) % 4294967296);
+    data[index + 1] = Math.trunc((epochMs * 1000) / 4294967296);
+};
+/** @ignore */
+export const setEpochMsToNanosecondsLong = (data: Int32Array, index: number, epochMs: number) => {
+    data[index] = Math.trunc((epochMs * 1000000) % 4294967296);
+    data[index + 1] = Math.trunc((epochMs * 1000000) / 4294967296);
+};
+
+/** @ignore */
+export const setVariableWidthBytes = (values: Uint8Array, valueOffsets: Int32Array, index: number, value: Uint8Array) => {
+    if (index + 1 < valueOffsets.length) {
+        const { [index]: x, [index + 1]: y } = valueOffsets;
+        values.set(value.subarray(0, y - x), x);
+    }
+};
+
+/** @ignore */
+const setBool = <T extends Bool>({ offset, values }: Data<T>, index: number, val: boolean) => {
+    const idx = offset + index;
+    val ? (values[idx >> 3] |= (1 << (idx % 8)))  // true
+        : (values[idx >> 3] &= ~(1 << (idx % 8))); // false
+
+};
+/** @ignore */
+export const setInt = <T extends Int>({ values }: Data<T>, index: number, value: T['TValue']): void => { values[index] = value; };
+/** @ignore */
+export const setFloat = <T extends Float32 | Float64>({ values }: Data<T>, index: number, value: T['TValue']): void => { values[index] = value; };
+/** @ignore */
+export const setFloat16 = <T extends Float16>({ values }: Data<T>, index: number, value: T['TValue']): void => { values[index] = float64ToUint16(value); };
+/* istanbul ignore next */
+/** @ignore */
+export const setAnyFloat = <T extends Float>(data: Data<T>, index: number, value: T['TValue']): void => {
+    switch (data.type.precision) {
+        case Precision.HALF:
+            return setFloat16(data as Data<Float16>, index, value);
+        case Precision.SINGLE:
+        case Precision.DOUBLE:
+            return setFloat(data as Data<Float32 | Float64>, index, value);
+    }
+};
+/** @ignore */
+export const setDateDay = <T extends DateDay>({ values }: Data<T>, index: number, value: T['TValue']): void => { setEpochMsToDays(values, index, value.valueOf()); };
+/** @ignore */
+export const setDateMillisecond = <T extends DateMillisecond>({ values }: Data<T>, index: number, value: T['TValue']): void => { setEpochMsToMillisecondsLong(values, index * 2, value.valueOf()); };
+/** @ignore */
+export const setFixedSizeBinary = <T extends FixedSizeBinary>({ stride, values }: Data<T>, index: number, value: T['TValue']): void => { values.set(value.subarray(0, stride), stride * index); };
+
+/** @ignore */
+const setBinary = <T extends Binary>({ values, valueOffsets }: Data<T>, index: number, value: T['TValue']) => setVariableWidthBytes(values, valueOffsets, index, value);
+/** @ignore */
+const setUtf8 = <T extends Utf8>({ values, valueOffsets }: Data<T>, index: number, value: T['TValue']) => {
+    setVariableWidthBytes(values, valueOffsets, index, encodeUtf8(value));
+};
+
+/* istanbul ignore next */
+export const setDate = <T extends Date_>(data: Data<T>, index: number, value: T['TValue']): void => {
+    data.type.unit === DateUnit.DAY
+        ? setDateDay(data as Data<DateDay>, index, value)
+        : setDateMillisecond(data as Data<DateMillisecond>, index, value);
+};
+
+/** @ignore */
+export const setTimestampSecond = <T extends TimestampSecond>({ values }: Data<T>, index: number, value: T['TValue']): void => setEpochMsToMillisecondsLong(values, index * 2, value / 1000);
+/** @ignore */
+export const setTimestampMillisecond = <T extends TimestampMillisecond>({ values }: Data<T>, index: number, value: T['TValue']): void => setEpochMsToMillisecondsLong(values, index * 2, value);
+/** @ignore */
+export const setTimestampMicrosecond = <T extends TimestampMicrosecond>({ values }: Data<T>, index: number, value: T['TValue']): void => setEpochMsToMicrosecondsLong(values, index * 2, value);
+/** @ignore */
+export const setTimestampNanosecond = <T extends TimestampNanosecond>({ values }: Data<T>, index: number, value: T['TValue']): void => setEpochMsToNanosecondsLong(values, index * 2, value);
+/* istanbul ignore next */
+/** @ignore */
+export const setTimestamp = <T extends Timestamp>(data: Data<T>, index: number, value: T['TValue']): void => {
+    switch (data.type.unit) {
+        case TimeUnit.SECOND: return setTimestampSecond(data as Data<TimestampSecond>, index, value);
+        case TimeUnit.MILLISECOND: return setTimestampMillisecond(data as Data<TimestampMillisecond>, index, value);
+        case TimeUnit.MICROSECOND: return setTimestampMicrosecond(data as Data<TimestampMicrosecond>, index, value);
+        case TimeUnit.NANOSECOND: return setTimestampNanosecond(data as Data<TimestampNanosecond>, index, value);
+    }
+};
+
+/** @ignore */
+export const setTimeSecond = <T extends TimeSecond>({ values }: Data<T>, index: number, value: T['TValue']): void => { values[index] = value; };
+/** @ignore */
+export const setTimeMillisecond = <T extends TimeMillisecond>({ values }: Data<T>, index: number, value: T['TValue']): void => { values[index] = value; };
+/** @ignore */
+export const setTimeMicrosecond = <T extends TimeMicrosecond>({ values }: Data<T>, index: number, value: T['TValue']): void => { values[index] = value; };
+/** @ignore */
+export const setTimeNanosecond = <T extends TimeNanosecond>({ values }: Data<T>, index: number, value: T['TValue']): void => { values[index] = value; };
+/* istanbul ignore next */
+/** @ignore */
+export const setTime = <T extends Time>(data: Data<T>, index: number, value: T['TValue']): void => {
+    switch (data.type.unit) {
+        case TimeUnit.SECOND: return setTimeSecond(data as Data<TimeSecond>, index, value as TimeSecond['TValue']);
+        case TimeUnit.MILLISECOND: return setTimeMillisecond(data as Data<TimeMillisecond>, index, value as TimeMillisecond['TValue']);
+        case TimeUnit.MICROSECOND: return setTimeMicrosecond(data as Data<TimeMicrosecond>, index, value as TimeMicrosecond['TValue']);
+        case TimeUnit.NANOSECOND: return setTimeNanosecond(data as Data<TimeNanosecond>, index, value as TimeNanosecond['TValue']);
+    }
+};
+
+/** @ignore */
+export const setDecimal = <T extends Decimal>({ values, stride }: Data<T>, index: number, value: T['TValue']): void => { values.set(value.subarray(0, stride), stride * index); };
+
+/** @ignore */
+const setList = <T extends List>(data: Data<T>, index: number, value: T['TValue']): void => {
+    const values = data.children[0];
+    const valueOffsets = data.valueOffsets;
+    const set = instance.getVisitFn(values);
+    if (Array.isArray(value)) {
+        for (let idx = -1, itr = valueOffsets[index], end = valueOffsets[index + 1]; itr < end;) {
+            set(values, itr++, value[++idx]);
+        }
+    } else {
+        for (let idx = -1, itr = valueOffsets[index], end = valueOffsets[index + 1]; itr < end;) {
+            set(values, itr++, value.get(++idx));
+        }
+    }
+};
+
+/** @ignore */
+const setMap = <T extends Map_>(data: Data<T>, index: number, value: T['TValue']) => {
+    const values = data.children[0];
+    const { valueOffsets } = data;
+    const set = instance.getVisitFn(values);
+    let { [index]: idx, [index + 1]: end } = valueOffsets;
+    const entries = value instanceof Map ? value.entries() : Object.entries(value);
+    for (const val of entries) {
+        set(values, idx, val);
+        if (++idx >= end) break;
+    }
+};
+
+/** @ignore */ type SetFunc<T extends DataType> = (data: Data<T>, i: number, v: T['TValue']) => void;
+
+/** @ignore */ const _setStructArrayValue = (o: number, v: any[]) =>
+    <T extends DataType>(set: SetFunc<T>, c: Data<T>, _: Field, i: number) => c && set(c, o, v[i]);
+
+/** @ignore */ const _setStructVectorValue = (o: number, v: Vector) =>
+    <T extends DataType>(set: SetFunc<T>, c: Data<T>, _: Field, i: number) => c && set(c, o, v.get(i));
+
+/** @ignore */ const _setStructMapValue = (o: number, v: Map<string, any>) =>
+    <T extends DataType>(set: SetFunc<T>, c: Data<T>, f: Field, _: number) => c && set(c, o, v.get(f.name));
+
+/** @ignore */ const _setStructObjectValue = (o: number, v: { [key: string]: any }) =>
+    <T extends DataType>(set: SetFunc<T>, c: Data<T>, f: Field, _: number) => c && set(c, o, v[f.name]);
+
+/** @ignore */
+const setStruct = <T extends Struct>(data: Data<T>, index: number, value: T['TValue']) => {
+
+    const childSetters = data.type.children.map((f) => instance.getVisitFn(f.type));
+    const set = value instanceof Map ? _setStructMapValue(index, value) :
+        value instanceof Vector ? _setStructVectorValue(index, value) :
+            Array.isArray(value) ? _setStructArrayValue(index, value) :
+                _setStructObjectValue(index, value);
+
+    // eslint-disable-next-line unicorn/no-array-for-each
+    data.type.children.forEach((f: Field, i: number) => set(childSetters[i], data.children[i], f, i));
+};
+
+/* istanbul ignore next */
+/** @ignore */
+const setUnion = <
+    V extends Data<Union> | Data<DenseUnion> | Data<SparseUnion>
+>(data: V, index: number, value: V['TValue']) => {
+    data.type.mode === UnionMode.Dense ?
+        setDenseUnion(data as Data<DenseUnion>, index, value) :
+        setSparseUnion(data as Data<SparseUnion>, index, value);
+};
+
+/** @ignore */
+const setDenseUnion = <T extends DenseUnion>(data: Data<T>, index: number, value: T['TValue']): void => {
+    const childIndex = data.type.typeIdToChildIndex[data.typeIds[index]];
+    const child = data.children[childIndex];
+    instance.visit(child, data.valueOffsets[index], value);
+};
+
+/** @ignore */
+const setSparseUnion = <T extends SparseUnion>(data: Data<T>, index: number, value: T['TValue']): void => {
+    const childIndex = data.type.typeIdToChildIndex[data.typeIds[index]];
+    const child = data.children[childIndex];
+    instance.visit(child, index, value);
+};
+
+/** @ignore */
+const setDictionary = <T extends Dictionary>(data: Data<T>, index: number, value: T['TValue']): void => {
+    data.dictionary?.set(data.values[index], value);
+};
+
+/* istanbul ignore next */
+/** @ignore */
+export const setIntervalValue = <T extends Interval>(data: Data<T>, index: number, value: T['TValue']): void => {
+    (data.type.unit === IntervalUnit.DAY_TIME)
+        ? setIntervalDayTime(data as Data<IntervalDayTime>, index, value)
+        : setIntervalYearMonth(data as Data<IntervalYearMonth>, index, value);
+};
+
+/** @ignore */
+export const setIntervalDayTime = <T extends IntervalDayTime>({ values }: Data<T>, index: number, value: T['TValue']): void => { values.set(value.subarray(0, 2), 2 * index); };
+/** @ignore */
+export const setIntervalYearMonth = <T extends IntervalYearMonth>({ values }: Data<T>, index: number, value: T['TValue']): void => { values[index] = (value[0] * 12) + (value[1] % 12); };
+
+/** @ignore */
+const setFixedSizeList = <T extends FixedSizeList>(data: Data<T>, index: number, value: T['TValue']): void => {
+    const { stride } = data;
+    const child = data.children[0];
+    const set = instance.getVisitFn(child);
+    if (Array.isArray(value)) {
+        for (let idx = -1, offset = index * stride; ++idx < stride;) {
+            set(child, offset + idx, value[idx]);
+        }
+    } else {
+        for (let idx = -1, offset = index * stride; ++idx < stride;) {
+            set(child, offset + idx, value.get(idx));
+        }
+    }
+};
+
+SetVisitor.prototype.visitBool = wrapSet(setBool);
+SetVisitor.prototype.visitInt = wrapSet(setInt);
+SetVisitor.prototype.visitInt8 = wrapSet(setInt);
+SetVisitor.prototype.visitInt16 = wrapSet(setInt);
+SetVisitor.prototype.visitInt32 = wrapSet(setInt);
+SetVisitor.prototype.visitInt64 = wrapSet(setInt);
+SetVisitor.prototype.visitUint8 = wrapSet(setInt);
+SetVisitor.prototype.visitUint16 = wrapSet(setInt);
+SetVisitor.prototype.visitUint32 = wrapSet(setInt);
+SetVisitor.prototype.visitUint64 = wrapSet(setInt);
+SetVisitor.prototype.visitFloat = wrapSet(setAnyFloat);
+SetVisitor.prototype.visitFloat16 = wrapSet(setFloat16);
+SetVisitor.prototype.visitFloat32 = wrapSet(setFloat);
+SetVisitor.prototype.visitFloat64 = wrapSet(setFloat);
+SetVisitor.prototype.visitUtf8 = wrapSet(setUtf8);
+SetVisitor.prototype.visitBinary = wrapSet(setBinary);
+SetVisitor.prototype.visitFixedSizeBinary = wrapSet(setFixedSizeBinary);
+SetVisitor.prototype.visitDate = wrapSet(setDate);
+SetVisitor.prototype.visitDateDay = wrapSet(setDateDay);
+SetVisitor.prototype.visitDateMillisecond = wrapSet(setDateMillisecond);
+SetVisitor.prototype.visitTimestamp = wrapSet(setTimestamp);
+SetVisitor.prototype.visitTimestampSecond = wrapSet(setTimestampSecond);
+SetVisitor.prototype.visitTimestampMillisecond = wrapSet(setTimestampMillisecond);
+SetVisitor.prototype.visitTimestampMicrosecond = wrapSet(setTimestampMicrosecond);
+SetVisitor.prototype.visitTimestampNanosecond = wrapSet(setTimestampNanosecond);
+SetVisitor.prototype.visitTime = wrapSet(setTime);
+SetVisitor.prototype.visitTimeSecond = wrapSet(setTimeSecond);
+SetVisitor.prototype.visitTimeMillisecond = wrapSet(setTimeMillisecond);
+SetVisitor.prototype.visitTimeMicrosecond = wrapSet(setTimeMicrosecond);
+SetVisitor.prototype.visitTimeNanosecond = wrapSet(setTimeNanosecond);
+SetVisitor.prototype.visitDecimal = wrapSet(setDecimal);
+SetVisitor.prototype.visitList = wrapSet(setList);
+SetVisitor.prototype.visitStruct = wrapSet(setStruct);
+SetVisitor.prototype.visitUnion = wrapSet(setUnion);
+SetVisitor.prototype.visitDenseUnion = wrapSet(setDenseUnion);
+SetVisitor.prototype.visitSparseUnion = wrapSet(setSparseUnion);
+SetVisitor.prototype.visitDictionary = wrapSet(setDictionary);
+SetVisitor.prototype.visitInterval = wrapSet(setIntervalValue);
+SetVisitor.prototype.visitIntervalDayTime = wrapSet(setIntervalDayTime);
+SetVisitor.prototype.visitIntervalYearMonth = wrapSet(setIntervalYearMonth);
+SetVisitor.prototype.visitFixedSizeList = wrapSet(setFixedSizeList);
+SetVisitor.prototype.visitMap = wrapSet(setMap);
+
+/** @ignore */
+export const instance = new SetVisitor();
diff --git a/igv_component/node_modules/apache-arrow/src/visitor/typeassembler.ts b/igv_component/node_modules/apache-arrow/src/visitor/typeassembler.ts
new file mode 100644
index 0000000000000000000000000000000000000000..79102ec9f22dfe296c238ca647d9075b7d8354ac
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/visitor/typeassembler.ts
@@ -0,0 +1,157 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import * as flatbuffers from 'flatbuffers';
+import Long = flatbuffers.Long;
+import Builder = flatbuffers.Builder;
+
+import * as type from '../type.js';
+import { Visitor } from '../visitor.js';
+
+import { Null } from '../fb/null.js';
+import { Int } from '../fb/int.js';
+import { FloatingPoint } from '../fb/floating-point.js';
+import { Binary } from '../fb/binary.js';
+import { Bool } from '../fb/bool.js';
+import { Utf8 } from '../fb/utf8.js';
+import { Decimal } from '../fb/decimal.js';
+import { Date } from '../fb/date.js';
+import { Time } from '../fb/time.js';
+import { Timestamp } from '../fb/timestamp.js';
+import { Interval } from '../fb/interval.js';
+import { List } from '../fb/list.js';
+import { Struct_ as Struct } from '../fb/struct_.js';
+import { Union } from '../fb/union.js';
+import { DictionaryEncoding } from '../fb/dictionary-encoding.js';
+import { FixedSizeBinary } from '../fb/fixed-size-binary.js';
+import { FixedSizeList } from '../fb/fixed-size-list.js';
+import { Map as Map_ } from '../fb/map.js';
+
+/** @ignore */
+export interface TypeAssembler extends Visitor {
+    visit<T extends type.DataType>(node: T, builder: Builder): number | undefined;
+}
+
+/** @ignore */
+export class TypeAssembler extends Visitor {
+    public visit<T extends type.DataType>(node: T, builder: Builder): number | undefined {
+        return (node == null || builder == null) ? undefined : super.visit(node, builder);
+    }
+    public visitNull<T extends type.Null>(_node: T, b: Builder) {
+        Null.startNull(b);
+        return Null.endNull(b);
+    }
+    public visitInt<T extends type.Int>(node: T, b: Builder) {
+        Int.startInt(b);
+        Int.addBitWidth(b, node.bitWidth);
+        Int.addIsSigned(b, node.isSigned);
+        return Int.endInt(b);
+    }
+    public visitFloat<T extends type.Float>(node: T, b: Builder) {
+        FloatingPoint.startFloatingPoint(b);
+        FloatingPoint.addPrecision(b, node.precision);
+        return FloatingPoint.endFloatingPoint(b);
+    }
+    public visitBinary<T extends type.Binary>(_node: T, b: Builder) {
+        Binary.startBinary(b);
+        return Binary.endBinary(b);
+    }
+    public visitBool<T extends type.Bool>(_node: T, b: Builder) {
+        Bool.startBool(b);
+        return Bool.endBool(b);
+    }
+    public visitUtf8<T extends type.Utf8>(_node: T, b: Builder) {
+        Utf8.startUtf8(b);
+        return Utf8.endUtf8(b);
+    }
+    public visitDecimal<T extends type.Decimal>(node: T, b: Builder) {
+        Decimal.startDecimal(b);
+        Decimal.addScale(b, node.scale);
+        Decimal.addPrecision(b, node.precision);
+        Decimal.addBitWidth(b, node.bitWidth);
+        return Decimal.endDecimal(b);
+    }
+    public visitDate<T extends type.Date_>(node: T, b: Builder) {
+        Date.startDate(b);
+        Date.addUnit(b, node.unit);
+        return Date.endDate(b);
+    }
+    public visitTime<T extends type.Time>(node: T, b: Builder) {
+        Time.startTime(b);
+        Time.addUnit(b, node.unit);
+        Time.addBitWidth(b, node.bitWidth);
+        return Time.endTime(b);
+    }
+    public visitTimestamp<T extends type.Timestamp>(node: T, b: Builder) {
+        const timezone = (node.timezone && b.createString(node.timezone)) || undefined;
+        Timestamp.startTimestamp(b);
+        Timestamp.addUnit(b, node.unit);
+        if (timezone !== undefined) {
+            Timestamp.addTimezone(b, timezone);
+        }
+        return Timestamp.endTimestamp(b);
+    }
+    public visitInterval<T extends type.Interval>(node: T, b: Builder) {
+        Interval.startInterval(b);
+        Interval.addUnit(b, node.unit);
+        return Interval.endInterval(b);
+    }
+    public visitList<T extends type.List>(_node: T, b: Builder) {
+        List.startList(b);
+        return List.endList(b);
+    }
+    public visitStruct<T extends type.Struct>(_node: T, b: Builder) {
+        Struct.startStruct_(b);
+        return Struct.endStruct_(b);
+    }
+    public visitUnion<T extends type.Union>(node: T, b: Builder) {
+        Union.startTypeIdsVector(b, node.typeIds.length);
+        const typeIds = Union.createTypeIdsVector(b, node.typeIds);
+        Union.startUnion(b);
+        Union.addMode(b, node.mode);
+        Union.addTypeIds(b, typeIds);
+        return Union.endUnion(b);
+    }
+    public visitDictionary<T extends type.Dictionary>(node: T, b: Builder) {
+        const indexType = this.visit(node.indices, b);
+        DictionaryEncoding.startDictionaryEncoding(b);
+        DictionaryEncoding.addId(b, new Long(node.id, 0));
+        DictionaryEncoding.addIsOrdered(b, node.isOrdered);
+        if (indexType !== undefined) {
+            DictionaryEncoding.addIndexType(b, indexType);
+        }
+        return DictionaryEncoding.endDictionaryEncoding(b);
+    }
+    public visitFixedSizeBinary<T extends type.FixedSizeBinary>(node: T, b: Builder) {
+        FixedSizeBinary.startFixedSizeBinary(b);
+        FixedSizeBinary.addByteWidth(b, node.byteWidth);
+        return FixedSizeBinary.endFixedSizeBinary(b);
+    }
+    public visitFixedSizeList<T extends type.FixedSizeList>(node: T, b: Builder) {
+        FixedSizeList.startFixedSizeList(b);
+        FixedSizeList.addListSize(b, node.listSize);
+        return FixedSizeList.endFixedSizeList(b);
+    }
+    public visitMap<T extends type.Map_>(node: T, b: Builder) {
+        Map_.startMap(b);
+        Map_.addKeysSorted(b, node.keysSorted);
+        return Map_.endMap(b);
+    }
+}
+
+/** @ignore */
+export const instance = new TypeAssembler();
diff --git a/igv_component/node_modules/apache-arrow/src/visitor/typecomparator.ts b/igv_component/node_modules/apache-arrow/src/visitor/typecomparator.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a77c4020961ce234843dcb7f3d937a807ed036a0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/visitor/typecomparator.ts
@@ -0,0 +1,280 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Data } from '../data.js';
+import { Vector } from '../vector.js';
+import { Visitor } from '../visitor.js';
+import { Schema, Field } from '../schema.js';
+import {
+    DataType, TypeMap, Dictionary,
+    Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct,
+    Float, Float16, Float32, Float64,
+    Int, Uint8, Uint16, Uint32, Uint64, Int8, Int16, Int32, Int64,
+    Date_, DateDay, DateMillisecond,
+    Interval, IntervalDayTime, IntervalYearMonth,
+    Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond,
+    Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond,
+    Union, DenseUnion, SparseUnion,
+} from '../type.js';
+
+/** @ignore */
+export interface TypeComparator extends Visitor {
+    visit<T extends DataType>(type: T, other?: DataType | null): other is T;
+    visitMany<T extends DataType>(nodes: T[], others?: DataType[] | null): boolean[];
+    getVisitFn<T extends DataType>(node: Vector<T> | Data<T> | T): (other?: DataType | null) => other is T;
+    visitNull<T extends Null>(type: T, other?: DataType | null): other is T;
+    visitBool<T extends Bool>(type: T, other?: DataType | null): other is T;
+    visitInt<T extends Int>(type: T, other?: DataType | null): other is T;
+    visitInt8<T extends Int8>(type: T, other?: DataType | null): other is T;
+    visitInt16<T extends Int16>(type: T, other?: DataType | null): other is T;
+    visitInt32<T extends Int32>(type: T, other?: DataType | null): other is T;
+    visitInt64<T extends Int64>(type: T, other?: DataType | null): other is T;
+    visitUint8<T extends Uint8>(type: T, other?: DataType | null): other is T;
+    visitUint16<T extends Uint16>(type: T, other?: DataType | null): other is T;
+    visitUint32<T extends Uint32>(type: T, other?: DataType | null): other is T;
+    visitUint64<T extends Uint64>(type: T, other?: DataType | null): other is T;
+    visitFloat<T extends Float>(type: T, other?: DataType | null): other is T;
+    visitFloat16<T extends Float16>(type: T, other?: DataType | null): other is T;
+    visitFloat32<T extends Float32>(type: T, other?: DataType | null): other is T;
+    visitFloat64<T extends Float64>(type: T, other?: DataType | null): other is T;
+    visitUtf8<T extends Utf8>(type: T, other?: DataType | null): other is T;
+    visitBinary<T extends Binary>(type: T, other?: DataType | null): other is T;
+    visitFixedSizeBinary<T extends FixedSizeBinary>(type: T, other?: DataType | null): other is T;
+    visitDate<T extends Date_>(type: T, other?: DataType | null): other is T;
+    visitDateDay<T extends DateDay>(type: T, other?: DataType | null): other is T;
+    visitDateMillisecond<T extends DateMillisecond>(type: T, other?: DataType | null): other is T;
+    visitTimestamp<T extends Timestamp>(type: T, other?: DataType | null): other is T;
+    visitTimestampSecond<T extends TimestampSecond>(type: T, other?: DataType | null): other is T;
+    visitTimestampMillisecond<T extends TimestampMillisecond>(type: T, other?: DataType | null): other is T;
+    visitTimestampMicrosecond<T extends TimestampMicrosecond>(type: T, other?: DataType | null): other is T;
+    visitTimestampNanosecond<T extends TimestampNanosecond>(type: T, other?: DataType | null): other is T;
+    visitTime<T extends Time>(type: T, other?: DataType | null): other is T;
+    visitTimeSecond<T extends TimeSecond>(type: T, other?: DataType | null): other is T;
+    visitTimeMillisecond<T extends TimeMillisecond>(type: T, other?: DataType | null): other is T;
+    visitTimeMicrosecond<T extends TimeMicrosecond>(type: T, other?: DataType | null): other is T;
+    visitTimeNanosecond<T extends TimeNanosecond>(type: T, other?: DataType | null): other is T;
+    visitDecimal<T extends Decimal>(type: T, other?: DataType | null): other is T;
+    visitList<T extends List>(type: T, other?: DataType | null): other is T;
+    visitStruct<T extends Struct>(type: T, other?: DataType | null): other is T;
+    visitUnion<T extends Union>(type: T, other?: DataType | null): other is T;
+    visitDenseUnion<T extends DenseUnion>(type: T, other?: DataType | null): other is T;
+    visitSparseUnion<T extends SparseUnion>(type: T, other?: DataType | null): other is T;
+    visitDictionary<T extends Dictionary>(type: T, other?: DataType | null): other is T;
+    visitInterval<T extends Interval>(type: T, other?: DataType | null): other is T;
+    visitIntervalDayTime<T extends IntervalDayTime>(type: T, other?: DataType | null): other is T;
+    visitIntervalYearMonth<T extends IntervalYearMonth>(type: T, other?: DataType | null): other is T;
+    visitFixedSizeList<T extends FixedSizeList>(type: T, other?: DataType | null): other is T;
+    visitMap<T extends Map_>(type: T, other?: DataType | null): other is T;
+}
+
+/** @ignore */
+export class TypeComparator extends Visitor {
+    compareSchemas<T extends TypeMap>(schema: Schema<T>, other?: Schema | null): other is Schema<T> {
+        return (schema === other) || (
+            other instanceof schema.constructor &&
+            this.compareManyFields(schema.fields, other.fields)
+        );
+    }
+    compareManyFields<T extends TypeMap>(fields: Field<T[keyof T]>[], others?: Field[] | null): others is Field<T[keyof T]>[] {
+        return (fields === others) || (
+            Array.isArray(fields) &&
+            Array.isArray(others) &&
+            fields.length === others.length &&
+            fields.every((f, i) => this.compareFields(f, others[i]))
+        );
+    }
+    compareFields<T extends DataType = any>(field: Field<T>, other?: Field | null): other is Field<T> {
+        return (field === other) || (
+            other instanceof field.constructor &&
+            field.name === other.name &&
+            field.nullable === other.nullable &&
+            this.visit(field.type, other.type)
+        );
+    }
+}
+
+function compareConstructor<T extends DataType>(type: T, other?: DataType | null): other is T {
+    return other instanceof type.constructor;
+}
+
+function compareAny<T extends DataType>(type: T, other?: DataType | null): other is T {
+    return (type === other) || compareConstructor(type, other);
+}
+
+function compareInt<T extends Int>(type: T, other?: DataType | null): other is T {
+    return (type === other) || (
+        compareConstructor(type, other) &&
+        type.bitWidth === other.bitWidth &&
+        type.isSigned === other.isSigned
+    );
+}
+
+function compareFloat<T extends Float>(type: T, other?: DataType | null): other is T {
+    return (type === other) || (
+        compareConstructor(type, other) &&
+        type.precision === other.precision
+    );
+}
+
+function compareFixedSizeBinary<T extends FixedSizeBinary>(type: T, other?: DataType | null): other is T {
+    return (type === other) || (
+        compareConstructor(type, other) &&
+        type.byteWidth === other.byteWidth
+    );
+}
+
+function compareDate<T extends Date_>(type: T, other?: DataType | null): other is T {
+    return (type === other) || (
+        compareConstructor(type, other) &&
+        type.unit === other.unit
+    );
+}
+
+function compareTimestamp<T extends Timestamp>(type: T, other?: DataType | null): other is T {
+    return (type === other) || (
+        compareConstructor(type, other) &&
+        type.unit === other.unit &&
+        type.timezone === other.timezone
+    );
+}
+
+function compareTime<T extends Time>(type: T, other?: DataType | null): other is T {
+    return (type === other) || (
+        compareConstructor(type, other) &&
+        type.unit === other.unit &&
+        type.bitWidth === other.bitWidth
+    );
+}
+
+function compareList<T extends List>(type: T, other?: DataType | null): other is T {
+    return (type === other) || (
+        compareConstructor(type, other) &&
+        type.children.length === other.children.length &&
+        instance.compareManyFields(type.children, other.children)
+    );
+}
+
+function compareStruct<T extends Struct>(type: T, other?: DataType | null): other is T {
+    return (type === other) || (
+        compareConstructor(type, other) &&
+        type.children.length === other.children.length &&
+        instance.compareManyFields(type.children, other.children)
+    );
+}
+
+function compareUnion<T extends Union>(type: T, other?: DataType | null): other is T {
+    return (type === other) || (
+        compareConstructor(type, other) &&
+        type.mode === other.mode &&
+        type.typeIds.every((x, i) => x === other.typeIds[i]) &&
+        instance.compareManyFields(type.children, other.children)
+    );
+}
+
+function compareDictionary<T extends Dictionary>(type: T, other?: DataType | null): other is T {
+    return (type === other) || (
+        compareConstructor(type, other) &&
+        type.id === other.id &&
+        type.isOrdered === other.isOrdered &&
+        instance.visit(<any>type.indices, other.indices) &&
+        instance.visit(type.dictionary, other.dictionary)
+    );
+}
+
+function compareInterval<T extends Interval>(type: T, other?: DataType | null): other is T {
+    return (type === other) || (
+        compareConstructor(type, other) &&
+        type.unit === other.unit
+    );
+}
+
+function compareFixedSizeList<T extends FixedSizeList>(type: T, other?: DataType | null): other is T {
+    return (type === other) || (
+        compareConstructor(type, other) &&
+        type.listSize === other.listSize &&
+        type.children.length === other.children.length &&
+        instance.compareManyFields(type.children, other.children)
+    );
+}
+
+function compareMap<T extends Map_>(type: T, other?: DataType | null): other is T {
+    return (type === other) || (
+        compareConstructor(type, other) &&
+        type.keysSorted === other.keysSorted &&
+        type.children.length === other.children.length &&
+        instance.compareManyFields(type.children, other.children)
+    );
+}
+
+TypeComparator.prototype.visitNull = compareAny;
+TypeComparator.prototype.visitBool = compareAny;
+TypeComparator.prototype.visitInt = compareInt;
+TypeComparator.prototype.visitInt8 = compareInt;
+TypeComparator.prototype.visitInt16 = compareInt;
+TypeComparator.prototype.visitInt32 = compareInt;
+TypeComparator.prototype.visitInt64 = compareInt;
+TypeComparator.prototype.visitUint8 = compareInt;
+TypeComparator.prototype.visitUint16 = compareInt;
+TypeComparator.prototype.visitUint32 = compareInt;
+TypeComparator.prototype.visitUint64 = compareInt;
+TypeComparator.prototype.visitFloat = compareFloat;
+TypeComparator.prototype.visitFloat16 = compareFloat;
+TypeComparator.prototype.visitFloat32 = compareFloat;
+TypeComparator.prototype.visitFloat64 = compareFloat;
+TypeComparator.prototype.visitUtf8 = compareAny;
+TypeComparator.prototype.visitBinary = compareAny;
+TypeComparator.prototype.visitFixedSizeBinary = compareFixedSizeBinary;
+TypeComparator.prototype.visitDate = compareDate;
+TypeComparator.prototype.visitDateDay = compareDate;
+TypeComparator.prototype.visitDateMillisecond = compareDate;
+TypeComparator.prototype.visitTimestamp = compareTimestamp;
+TypeComparator.prototype.visitTimestampSecond = compareTimestamp;
+TypeComparator.prototype.visitTimestampMillisecond = compareTimestamp;
+TypeComparator.prototype.visitTimestampMicrosecond = compareTimestamp;
+TypeComparator.prototype.visitTimestampNanosecond = compareTimestamp;
+TypeComparator.prototype.visitTime = compareTime;
+TypeComparator.prototype.visitTimeSecond = compareTime;
+TypeComparator.prototype.visitTimeMillisecond = compareTime;
+TypeComparator.prototype.visitTimeMicrosecond = compareTime;
+TypeComparator.prototype.visitTimeNanosecond = compareTime;
+TypeComparator.prototype.visitDecimal = compareAny;
+TypeComparator.prototype.visitList = compareList;
+TypeComparator.prototype.visitStruct = compareStruct;
+TypeComparator.prototype.visitUnion = compareUnion;
+TypeComparator.prototype.visitDenseUnion = compareUnion;
+TypeComparator.prototype.visitSparseUnion = compareUnion;
+TypeComparator.prototype.visitDictionary = compareDictionary;
+TypeComparator.prototype.visitInterval = compareInterval;
+TypeComparator.prototype.visitIntervalDayTime = compareInterval;
+TypeComparator.prototype.visitIntervalYearMonth = compareInterval;
+TypeComparator.prototype.visitFixedSizeList = compareFixedSizeList;
+TypeComparator.prototype.visitMap = compareMap;
+
+/** @ignore */
+export const instance = new TypeComparator();
+
+export function compareSchemas<T extends TypeMap>(schema: Schema<T>, other?: Schema | null): other is Schema<T> {
+    return instance.compareSchemas(schema, other);
+}
+
+export function compareFields<T extends DataType = any>(field: Field<T>, other?: Field | null): other is Field<T> {
+    return instance.compareFields(field, other);
+}
+
+export function compareTypes<A extends DataType = any>(type: A, other?: DataType): other is A {
+    return instance.visit(type, other);
+}
diff --git a/igv_component/node_modules/apache-arrow/src/visitor/typector.ts b/igv_component/node_modules/apache-arrow/src/visitor/typector.ts
new file mode 100644
index 0000000000000000000000000000000000000000..c825a61dbadfbf9e60808196d0535173c86eb101
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/visitor/typector.ts
@@ -0,0 +1,82 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Data } from '../data.js';
+import { Type } from '../enum.js';
+import * as type from '../type.js';
+import { Vector } from '../vector.js';
+import { DataType } from '../type.js';
+import { Visitor } from '../visitor.js';
+import { DataTypeCtor } from '../interfaces.js';
+
+/** @ignore */
+export interface GetDataTypeConstructor extends Visitor {
+    visit<T extends Type>(node: T): DataTypeCtor<T>;
+    visitMany<T extends Type>(nodes: T[]): DataTypeCtor<T>[];
+    getVisitFn<T extends Type>(node: T): () => DataTypeCtor<T>;
+    getVisitFn<T extends DataType>(node: Vector<T> | Data<T> | T): () => DataTypeCtor<T>;
+}
+
+/** @ignore */
+export class GetDataTypeConstructor extends Visitor {
+    public visitNull() { return type.Null; }
+    public visitBool() { return type.Bool; }
+    public visitInt() { return type.Int; }
+    public visitInt8() { return type.Int8; }
+    public visitInt16() { return type.Int16; }
+    public visitInt32() { return type.Int32; }
+    public visitInt64() { return type.Int64; }
+    public visitUint8() { return type.Uint8; }
+    public visitUint16() { return type.Uint16; }
+    public visitUint32() { return type.Uint32; }
+    public visitUint64() { return type.Uint64; }
+    public visitFloat() { return type.Float; }
+    public visitFloat16() { return type.Float16; }
+    public visitFloat32() { return type.Float32; }
+    public visitFloat64() { return type.Float64; }
+    public visitUtf8() { return type.Utf8; }
+    public visitBinary() { return type.Binary; }
+    public visitFixedSizeBinary() { return type.FixedSizeBinary; }
+    public visitDate() { return type.Date_; }
+    public visitDateDay() { return type.DateDay; }
+    public visitDateMillisecond() { return type.DateMillisecond; }
+    public visitTimestamp() { return type.Timestamp; }
+    public visitTimestampSecond() { return type.TimestampSecond; }
+    public visitTimestampMillisecond() { return type.TimestampMillisecond; }
+    public visitTimestampMicrosecond() { return type.TimestampMicrosecond; }
+    public visitTimestampNanosecond() { return type.TimestampNanosecond; }
+    public visitTime() { return type.Time; }
+    public visitTimeSecond() { return type.TimeSecond; }
+    public visitTimeMillisecond() { return type.TimeMillisecond; }
+    public visitTimeMicrosecond() { return type.TimeMicrosecond; }
+    public visitTimeNanosecond() { return type.TimeNanosecond; }
+    public visitDecimal() { return type.Decimal; }
+    public visitList() { return type.List; }
+    public visitStruct() { return type.Struct; }
+    public visitUnion() { return type.Union; }
+    public visitDenseUnion() { return type.DenseUnion; }
+    public visitSparseUnion() { return type.SparseUnion; }
+    public visitDictionary() { return type.Dictionary; }
+    public visitInterval() { return type.Interval; }
+    public visitIntervalDayTime() { return type.IntervalDayTime; }
+    public visitIntervalYearMonth() { return type.IntervalYearMonth; }
+    public visitFixedSizeList() { return type.FixedSizeList; }
+    public visitMap() { return type.Map_; }
+}
+
+/** @ignore */
+export const instance = new GetDataTypeConstructor();
diff --git a/igv_component/node_modules/apache-arrow/src/visitor/vectorassembler.ts b/igv_component/node_modules/apache-arrow/src/visitor/vectorassembler.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a9415b0e0c1ddcd0cd826be33add1189f35fa137
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/visitor/vectorassembler.ts
@@ -0,0 +1,241 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Data } from '../data.js';
+import { Vector } from '../vector.js';
+import { Visitor } from '../visitor.js';
+import { Type, UnionMode } from '../enum.js';
+import { RecordBatch } from '../recordbatch.js';
+import { TypeToDataType } from '../interfaces.js';
+import { rebaseValueOffsets } from '../util/buffer.js';
+import { packBools, truncateBitmap } from '../util/bit.js';
+import { BufferRegion, FieldNode } from '../ipc/metadata/message.js';
+import {
+    DataType, Dictionary,
+    Float, Int, Date_, Interval, Time, Timestamp, Union,
+    Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct,
+} from '../type.js';
+
+/** @ignore */
+export interface VectorAssembler extends Visitor {
+    visit<T extends DataType>(node: Vector<T> | Data<T>): this;
+    visitMany<T extends DataType>(nodes: readonly Data<T>[]): this[];
+    getVisitFn<T extends Type>(node: T): (data: Data<TypeToDataType<T>>) => this;
+    getVisitFn<T extends DataType>(node: Vector<T> | Data<T> | T): (data: Data<T>) => this;
+
+    visitBool<T extends Bool>(data: Data<T>): this;
+    visitInt<T extends Int>(data: Data<T>): this;
+    visitFloat<T extends Float>(data: Data<T>): this;
+    visitUtf8<T extends Utf8>(data: Data<T>): this;
+    visitBinary<T extends Binary>(data: Data<T>): this;
+    visitFixedSizeBinary<T extends FixedSizeBinary>(data: Data<T>): this;
+    visitDate<T extends Date_>(data: Data<T>): this;
+    visitTimestamp<T extends Timestamp>(data: Data<T>): this;
+    visitTime<T extends Time>(data: Data<T>): this;
+    visitDecimal<T extends Decimal>(data: Data<T>): this;
+    visitList<T extends List>(data: Data<T>): this;
+    visitStruct<T extends Struct>(data: Data<T>): this;
+    visitUnion<T extends Union>(data: Data<T>): this;
+    visitInterval<T extends Interval>(data: Data<T>): this;
+    visitFixedSizeList<T extends FixedSizeList>(data: Data<T>): this;
+    visitMap<T extends Map_>(data: Data<T>): this;
+}
+
+/** @ignore */
+export class VectorAssembler extends Visitor {
+
+    /** @nocollapse */
+    public static assemble<T extends Vector | RecordBatch>(...args: (T | T[])[]) {
+        const unwrap = (nodes: (T | T[])[]): Data[] =>
+            nodes.flatMap((node: T | T[]) => Array.isArray(node) ? unwrap(node) :
+                (node instanceof RecordBatch) ? node.data.children : node.data);
+        const assembler = new VectorAssembler();
+        assembler.visitMany(unwrap(args));
+        return assembler;
+    }
+
+    private constructor() { super(); }
+
+    public visit<T extends DataType>(data: Vector<T> | Data<T>): this {
+        if (data instanceof Vector) {
+            this.visitMany(data.data);
+            return this;
+        }
+        const { type } = data;
+        if (!DataType.isDictionary(type)) {
+            const { length, nullCount } = data;
+            if (length > 2147483647) {
+                /* istanbul ignore next */
+                throw new RangeError('Cannot write arrays larger than 2^31 - 1 in length');
+            }
+            if (!DataType.isNull(type)) {
+                addBuffer.call(this, nullCount <= 0
+                    ? new Uint8Array(0) // placeholder validity buffer
+                    : truncateBitmap(data.offset, length, data.nullBitmap)
+                );
+            }
+            this.nodes.push(new FieldNode(length, nullCount));
+        }
+        return super.visit(data);
+    }
+
+    public visitNull<T extends Null>(_null: Data<T>) {
+        return this;
+    }
+
+    public visitDictionary<T extends Dictionary>(data: Data<T>) {
+        // Assemble the indices here, Dictionary assembled separately.
+        return this.visit(data.clone(data.type.indices));
+    }
+
+    public get nodes() { return this._nodes; }
+    public get buffers() { return this._buffers; }
+    public get byteLength() { return this._byteLength; }
+    public get bufferRegions() { return this._bufferRegions; }
+
+    protected _byteLength = 0;
+    protected _nodes: FieldNode[] = [];
+    protected _buffers: ArrayBufferView[] = [];
+    protected _bufferRegions: BufferRegion[] = [];
+}
+
+/** @ignore */
+function addBuffer(this: VectorAssembler, values: ArrayBufferView) {
+    const byteLength = (values.byteLength + 7) & ~7; // Round up to a multiple of 8
+    this.buffers.push(values);
+    this.bufferRegions.push(new BufferRegion(this._byteLength, byteLength));
+    this._byteLength += byteLength;
+    return this;
+}
+
+/** @ignore */
+function assembleUnion<T extends Union>(this: VectorAssembler, data: Data<T>) {
+    const { type, length, typeIds, valueOffsets } = data;
+    // All Union Vectors have a typeIds buffer
+    addBuffer.call(this, typeIds);
+    // If this is a Sparse Union, treat it like all other Nested types
+    if (type.mode === UnionMode.Sparse) {
+        return assembleNestedVector.call(this, data);
+    } else if (type.mode === UnionMode.Dense) {
+        // If this is a Dense Union, add the valueOffsets buffer and potentially slice the children
+        if (data.offset <= 0) {
+            // If the Vector hasn't been sliced, write the existing valueOffsets
+            addBuffer.call(this, valueOffsets);
+            // We can treat this like all other Nested types
+            return assembleNestedVector.call(this, data);
+        } else {
+            // A sliced Dense Union is an unpleasant case. Because the offsets are different for
+            // each child vector, we need to "rebase" the valueOffsets for each child
+            // Union typeIds are not necessary 0-indexed
+            const maxChildTypeId = typeIds.reduce((x, y) => Math.max(x, y), typeIds[0]);
+            const childLengths = new Int32Array(maxChildTypeId + 1);
+            // Set all to -1 to indicate that we haven't observed a first occurrence of a particular child yet
+            const childOffsets = new Int32Array(maxChildTypeId + 1).fill(-1);
+            const shiftedOffsets = new Int32Array(length);
+            // If we have a non-zero offset, then the value offsets do not start at
+            // zero. We must a) create a new offsets array with shifted offsets and
+            // b) slice the values array accordingly
+            const unshiftedOffsets = rebaseValueOffsets(-valueOffsets[0], length, valueOffsets);
+            for (let typeId, shift, index = -1; ++index < length;) {
+                if ((shift = childOffsets[typeId = typeIds[index]]) === -1) {
+                    shift = childOffsets[typeId] = unshiftedOffsets[typeId];
+                }
+                shiftedOffsets[index] = unshiftedOffsets[index] - shift;
+                ++childLengths[typeId];
+            }
+            addBuffer.call(this, shiftedOffsets);
+            // Slice and visit children accordingly
+            for (let child: Data | null, childIndex = -1, numChildren = type.children.length; ++childIndex < numChildren;) {
+                if (child = data.children[childIndex]) {
+                    const typeId = type.typeIds[childIndex];
+                    const childLength = Math.min(length, childLengths[typeId]);
+                    this.visit(child.slice(childOffsets[typeId], childLength));
+                }
+            }
+        }
+    }
+    return this;
+}
+
+/** @ignore */
+function assembleBoolVector<T extends Bool>(this: VectorAssembler, data: Data<T>) {
+    // Bool vector is a special case of FlatVector, as its data buffer needs to stay packed
+    let values: Uint8Array;
+    if (data.nullCount >= data.length) {
+        // If all values are null, just insert a placeholder empty data buffer (fastest path)
+        return addBuffer.call(this, new Uint8Array(0));
+    } else if ((values = data.values) instanceof Uint8Array) {
+        // If values is already a Uint8Array, slice the bitmap (fast path)
+        return addBuffer.call(this, truncateBitmap(data.offset, data.length, values));
+    }
+    // Otherwise if the underlying data *isn't* a Uint8Array, enumerate the
+    // values as bools and re-pack them into a Uint8Array. This code isn't
+    // reachable unless you're trying to manipulate the Data internals,
+    // we're only doing this for safety.
+    /* istanbul ignore next */
+    return addBuffer.call(this, packBools(data.values));
+}
+
+/** @ignore */
+function assembleFlatVector<T extends Int | Float | FixedSizeBinary | Date_ | Timestamp | Time | Decimal | Interval>(this: VectorAssembler, data: Data<T>) {
+    return addBuffer.call(this, data.values.subarray(0, data.length * data.stride));
+}
+
+/** @ignore */
+function assembleFlatListVector<T extends Utf8 | Binary>(this: VectorAssembler, data: Data<T>) {
+    const { length, values, valueOffsets } = data;
+    const firstOffset = valueOffsets[0];
+    const lastOffset = valueOffsets[length];
+    const byteLength = Math.min(lastOffset - firstOffset, values.byteLength - firstOffset);
+    // Push in the order FlatList types read their buffers
+    addBuffer.call(this, rebaseValueOffsets(-valueOffsets[0], length, valueOffsets)); // valueOffsets buffer first
+    addBuffer.call(this, values.subarray(firstOffset, firstOffset + byteLength)); // sliced values buffer second
+    return this;
+}
+
+/** @ignore */
+function assembleListVector<T extends Map_ | List | FixedSizeList>(this: VectorAssembler, data: Data<T>) {
+    const { length, valueOffsets } = data;
+    // If we have valueOffsets (MapVector, ListVector), push that buffer first
+    if (valueOffsets) {
+        addBuffer.call(this, rebaseValueOffsets(valueOffsets[0], length, valueOffsets));
+    }
+    // Then insert the List's values child
+    return this.visit(data.children[0]);
+}
+
+/** @ignore */
+function assembleNestedVector<T extends Struct | Union>(this: VectorAssembler, data: Data<T>) {
+    return this.visitMany(data.type.children.map((_, i) => data.children[i]).filter(Boolean))[0];
+}
+
+VectorAssembler.prototype.visitBool = assembleBoolVector;
+VectorAssembler.prototype.visitInt = assembleFlatVector;
+VectorAssembler.prototype.visitFloat = assembleFlatVector;
+VectorAssembler.prototype.visitUtf8 = assembleFlatListVector;
+VectorAssembler.prototype.visitBinary = assembleFlatListVector;
+VectorAssembler.prototype.visitFixedSizeBinary = assembleFlatVector;
+VectorAssembler.prototype.visitDate = assembleFlatVector;
+VectorAssembler.prototype.visitTimestamp = assembleFlatVector;
+VectorAssembler.prototype.visitTime = assembleFlatVector;
+VectorAssembler.prototype.visitDecimal = assembleFlatVector;
+VectorAssembler.prototype.visitList = assembleListVector;
+VectorAssembler.prototype.visitStruct = assembleNestedVector;
+VectorAssembler.prototype.visitUnion = assembleUnion;
+VectorAssembler.prototype.visitInterval = assembleFlatVector;
+VectorAssembler.prototype.visitFixedSizeList = assembleListVector;
+VectorAssembler.prototype.visitMap = assembleListVector;
diff --git a/igv_component/node_modules/apache-arrow/src/visitor/vectorloader.ts b/igv_component/node_modules/apache-arrow/src/visitor/vectorloader.ts
new file mode 100644
index 0000000000000000000000000000000000000000..63431463a962346e6d035c205d7f1f1f8da1aef4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/src/visitor/vectorloader.ts
@@ -0,0 +1,181 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+
+import { Data, makeData } from '../data.js';
+import * as type from '../type.js';
+import { Field } from '../schema.js';
+import { Vector } from '../vector.js';
+import { DataType } from '../type.js';
+import { Visitor } from '../visitor.js';
+import { packBools } from '../util/bit.js';
+import { encodeUtf8 } from '../util/utf8.js';
+import { Int64, Int128 } from '../util/int.js';
+import { UnionMode, DateUnit } from '../enum.js';
+import { toArrayBufferView } from '../util/buffer.js';
+import { BufferRegion, FieldNode } from '../ipc/metadata/message.js';
+
+/** @ignore */
+export interface VectorLoader extends Visitor {
+    visit<T extends DataType>(node: Field<T> | T): Data<T>;
+    visitMany<T extends DataType>(nodes: (Field<T> | T)[]): Data<T>[];
+}
+
+/** @ignore */
+export class VectorLoader extends Visitor {
+    private bytes: Uint8Array;
+    private nodes: FieldNode[];
+    private nodesIndex = -1;
+    private buffers: BufferRegion[];
+    private buffersIndex = -1;
+    private dictionaries: Map<number, Vector<any>>;
+    constructor(bytes: Uint8Array, nodes: FieldNode[], buffers: BufferRegion[], dictionaries: Map<number, Vector<any>>) {
+        super();
+        this.bytes = bytes;
+        this.nodes = nodes;
+        this.buffers = buffers;
+        this.dictionaries = dictionaries;
+    }
+
+    public visit<T extends DataType>(node: Field<T> | T): Data<T> {
+        return super.visit(node instanceof Field ? node.type : node);
+    }
+
+    public visitNull<T extends type.Null>(type: T, { length } = this.nextFieldNode()) {
+        return makeData({ type, length });
+    }
+    public visitBool<T extends type.Bool>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    public visitInt<T extends type.Int>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    public visitFloat<T extends type.Float>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    public visitUtf8<T extends type.Utf8>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), valueOffsets: this.readOffsets(type), data: this.readData(type) });
+    }
+    public visitBinary<T extends type.Binary>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), valueOffsets: this.readOffsets(type), data: this.readData(type) });
+    }
+    public visitFixedSizeBinary<T extends type.FixedSizeBinary>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    public visitDate<T extends type.Date_>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    public visitTimestamp<T extends type.Timestamp>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    public visitTime<T extends type.Time>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    public visitDecimal<T extends type.Decimal>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    public visitList<T extends type.List>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), valueOffsets: this.readOffsets(type), 'child': this.visit(type.children[0]) });
+    }
+    public visitStruct<T extends type.Struct>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), children: this.visitMany(type.children) });
+    }
+    public visitUnion<T extends type.Union>(type: T) {
+        return type.mode === UnionMode.Sparse ? this.visitSparseUnion(type as type.SparseUnion) : this.visitDenseUnion(type as type.DenseUnion);
+    }
+    public visitDenseUnion<T extends type.DenseUnion>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), typeIds: this.readTypeIds(type), valueOffsets: this.readOffsets(type), children: this.visitMany(type.children) });
+    }
+    public visitSparseUnion<T extends type.SparseUnion>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), typeIds: this.readTypeIds(type), children: this.visitMany(type.children) });
+    }
+    public visitDictionary<T extends type.Dictionary>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type.indices), dictionary: this.readDictionary(type) });
+    }
+    public visitInterval<T extends type.Interval>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    public visitFixedSizeList<T extends type.FixedSizeList>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), 'child': this.visit(type.children[0]) });
+    }
+    public visitMap<T extends type.Map_>(type: T, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), valueOffsets: this.readOffsets(type), 'child': this.visit(type.children[0]) });
+    }
+
+    protected nextFieldNode() { return this.nodes[++this.nodesIndex]; }
+    protected nextBufferRange() { return this.buffers[++this.buffersIndex]; }
+    protected readNullBitmap<T extends DataType>(type: T, nullCount: number, buffer = this.nextBufferRange()) {
+        return nullCount > 0 && this.readData(type, buffer) || new Uint8Array(0);
+    }
+    protected readOffsets<T extends DataType>(type: T, buffer?: BufferRegion) { return this.readData(type, buffer); }
+    protected readTypeIds<T extends DataType>(type: T, buffer?: BufferRegion) { return this.readData(type, buffer); }
+    protected readData<T extends DataType>(_type: T, { length, offset } = this.nextBufferRange()) {
+        return this.bytes.subarray(offset, offset + length);
+    }
+    protected readDictionary<T extends type.Dictionary>(type: T): Vector<T['dictionary']> {
+        return this.dictionaries.get(type.id)!;
+    }
+}
+
+/** @ignore */
+export class JSONVectorLoader extends VectorLoader {
+    private sources: any[][];
+    constructor(sources: any[][], nodes: FieldNode[], buffers: BufferRegion[], dictionaries: Map<number, Vector<any>>) {
+        super(new Uint8Array(0), nodes, buffers, dictionaries);
+        this.sources = sources;
+    }
+    protected readNullBitmap<T extends DataType>(_type: T, nullCount: number, { offset } = this.nextBufferRange()) {
+        return nullCount <= 0 ? new Uint8Array(0) : packBools(this.sources[offset]);
+    }
+    protected readOffsets<T extends DataType>(_type: T, { offset } = this.nextBufferRange()) {
+        return toArrayBufferView(Uint8Array, toArrayBufferView(Int32Array, this.sources[offset]));
+    }
+    protected readTypeIds<T extends DataType>(type: T, { offset } = this.nextBufferRange()) {
+        return toArrayBufferView(Uint8Array, toArrayBufferView(type.ArrayType, this.sources[offset]));
+    }
+    protected readData<T extends DataType>(type: T, { offset } = this.nextBufferRange()) {
+        const { sources } = this;
+        if (DataType.isTimestamp(type)) {
+            return toArrayBufferView(Uint8Array, Int64.convertArray(sources[offset] as string[]));
+        } else if ((DataType.isInt(type) || DataType.isTime(type)) && type.bitWidth === 64) {
+            return toArrayBufferView(Uint8Array, Int64.convertArray(sources[offset] as string[]));
+        } else if (DataType.isDate(type) && type.unit === DateUnit.MILLISECOND) {
+            return toArrayBufferView(Uint8Array, Int64.convertArray(sources[offset] as string[]));
+        } else if (DataType.isDecimal(type)) {
+            return toArrayBufferView(Uint8Array, Int128.convertArray(sources[offset] as string[]));
+        } else if (DataType.isBinary(type) || DataType.isFixedSizeBinary(type)) {
+            return binaryDataFromJSON(sources[offset] as string[]);
+        } else if (DataType.isBool(type)) {
+            return packBools(sources[offset] as number[]);
+        } else if (DataType.isUtf8(type)) {
+            return encodeUtf8((sources[offset] as string[]).join(''));
+        }
+        return toArrayBufferView(Uint8Array, toArrayBufferView(type.ArrayType, sources[offset].map((x) => +x)));
+    }
+}
+
+/** @ignore */
+function binaryDataFromJSON(values: string[]) {
+    // "DATA": ["49BC7D5B6C47D2","3F5FB6D9322026"]
+    // There are definitely more efficient ways to do this... but it gets the
+    // job done.
+    const joined = values.join('');
+    const data = new Uint8Array(joined.length / 2);
+    for (let i = 0; i < joined.length; i += 2) {
+        data[i >> 1] = Number.parseInt(joined.slice(i, i + 2), 16);
+    }
+    return data;
+}
diff --git a/igv_component/node_modules/apache-arrow/table.d.ts b/igv_component/node_modules/apache-arrow/table.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..61807d22911c9f98288d79c1b468fe86b3c29251
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/table.d.ts
@@ -0,0 +1,198 @@
+import { Data } from './data.js';
+import { Vector } from './vector.js';
+import { Schema } from './schema.js';
+import { DataType, Struct, TypeMap } from './type.js';
+import { DataProps } from './data.js';
+import { ArrayDataType, BigIntArray, TypedArray, TypedArrayDataType } from './interfaces.js';
+import { RecordBatch } from './recordbatch.js';
+/** @ignore */
+export interface Table<T extends TypeMap = any> {
+    readonly TType: Struct<T>;
+    readonly TArray: Struct<T>['TArray'];
+    readonly TValue: Struct<T>['TValue'];
+    /**
+     * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/isConcatSpreadable
+     */
+    [Symbol.isConcatSpreadable]: true;
+}
+/**
+ * Tables are collections of {@link Vector}s and have a {@link Schema}. Use the convenience methods {@link makeTable}
+ * or {@link tableFromArrays} to create a table in JavaScript. To create a table from the IPC format, use
+ * {@link tableFromIPC}.
+ */
+export declare class Table<T extends TypeMap = any> {
+    constructor();
+    constructor(batches: Iterable<RecordBatch<T>>);
+    constructor(...batches: readonly RecordBatch<T>[]);
+    constructor(...columns: {
+        [P in keyof T]: Vector<T[P]>;
+    }[]);
+    constructor(...columns: {
+        [P in keyof T]: Data<T[P]> | DataProps<T[P]>;
+    }[]);
+    constructor(schema: Schema<T>, data?: RecordBatch<T> | RecordBatch<T>[]);
+    constructor(schema: Schema<T>, data?: RecordBatch<T> | RecordBatch<T>[], offsets?: Uint32Array);
+    protected _offsets: Uint32Array | number[];
+    protected _nullCount: number;
+    readonly schema: Schema<T>;
+    /**
+     * The contiguous {@link RecordBatch `RecordBatch`} chunks of the Table rows.
+     */
+    readonly batches: RecordBatch<T>[];
+    /**
+     * The contiguous {@link RecordBatch `RecordBatch`} chunks of the Table rows.
+     */
+    get data(): Data<Struct<T>>[];
+    /**
+     * The number of columns in this Table.
+     */
+    get numCols(): number;
+    /**
+     * The number of rows in this Table.
+     */
+    get numRows(): number;
+    /**
+     * The number of null rows in this Table.
+     */
+    get nullCount(): number;
+    /**
+     * Check whether an element is null.
+     *
+     * @param index The index at which to read the validity bitmap.
+     */
+    isValid(index: number): boolean;
+    /**
+     * Get an element value by position.
+     *
+     * @param index The index of the element to read.
+     */
+    get(index: number): Struct<T>['TValue'] | null;
+    /**
+     * Set an element value by position.
+     *
+     * @param index The index of the element to write.
+     * @param value The value to set.
+     */
+    set(index: number, value: Struct<T>['TValue'] | null): void;
+    /**
+     * Retrieve the index of the first occurrence of a value in an Vector.
+     *
+     * @param element The value to locate in the Vector.
+     * @param offset The index at which to begin the search. If offset is omitted, the search starts at index 0.
+     */
+    indexOf(element: Struct<T>['TValue'], offset?: number): number;
+    /**
+     * Get the size in bytes of an element by index.
+     * @param index The index at which to get the byteLength.
+     */
+    getByteLength(index: number): number;
+    /**
+     * Iterator for rows in this Table.
+     */
+    [Symbol.iterator](): IterableIterator<any>;
+    /**
+     * Return a JavaScript Array of the Table rows.
+     *
+     * @returns An Array of Table rows.
+     */
+    toArray(): any[];
+    /**
+     * Returns a string representation of the Table rows.
+     *
+     * @returns A string representation of the Table rows.
+     */
+    toString(): string;
+    /**
+     * Combines two or more Tables of the same schema.
+     *
+     * @param others Additional Tables to add to the end of this Tables.
+     */
+    concat(...others: Table<T>[]): Table<T>;
+    /**
+     * Return a zero-copy sub-section of this Table.
+     *
+     * @param begin The beginning of the specified portion of the Table.
+     * @param end The end of the specified portion of the Table. This is exclusive of the element at the index 'end'.
+     */
+    slice(begin?: number, end?: number): Table<T>;
+    /**
+     * Returns a child Vector by name, or null if this Vector has no child with the given name.
+     *
+     * @param name The name of the child to retrieve.
+     */
+    getChild<P extends keyof T>(name: P): Vector<T[P]> | null;
+    /**
+     * Returns a child Vector by index, or null if this Vector has no child at the supplied index.
+     *
+     * @param index The index of the child to retrieve.
+     */
+    getChildAt<R extends T[keyof T] = any>(index: number): Vector<R> | null;
+    /**
+     * Sets a child Vector by name.
+     *
+     * @param name The name of the child to overwrite.
+     * @returns A new Table with the supplied child for the specified name.
+     */
+    setChild<P extends keyof T, R extends DataType>(name: P, child: Vector<R>): Table<T & { [K in P]: R; }>;
+    /**
+     * Sets a child Vector by index.
+     *
+     * @param index The index of the child to overwrite.
+     * @returns A new Table with the supplied child at the specified index.
+     */
+    setChildAt(index: number, child?: null): Table;
+    setChildAt<R extends DataType = any>(index: number, child: Vector<R>): Table;
+    /**
+     * Construct a new Table containing only specified columns.
+     *
+     * @param columnNames Names of columns to keep.
+     * @returns A new Table of columns matching the specified names.
+     */
+    select<K extends keyof T = any>(columnNames: K[]): Table<{
+        [key: string]: any;
+    }>;
+    /**
+     * Construct a new Table containing only columns at the specified indices.
+     *
+     * @param columnIndices Indices of columns to keep.
+     * @returns A new Table of columns at the specified indices.
+     */
+    selectAt<K extends T[keyof T] = any>(columnIndices: number[]): Table<{
+        [key: string]: K;
+    }>;
+    assign<R extends TypeMap = any>(other: Table<R>): Table<T & R>;
+    protected static [Symbol.toStringTag]: string;
+}
+/**
+ * Creates a new Table from an object of typed arrays.
+ *
+*  @example
+ * ```ts
+ * const table = makeTable({
+ *   a: new Int8Array([1, 2, 3]),
+ * })
+ * ```
+ *
+ * @param input Input an object of typed arrays.
+ * @returns A new Table.
+ */
+export declare function makeTable<I extends Record<string | number | symbol, TypedArray>>(input: I): Table<{
+    [P in keyof I]: TypedArrayDataType<I[P]>;
+}>;
+/**
+ * Creates a new Table from an object of typed arrays or JavaScript arrays.
+ *
+ *  @example
+ * ```ts
+ * const table = tableFromArrays({
+ *   a: [1, 2, 3],
+ *   b: new Int8Array([1, 2, 3]),
+ * })
+ * ```
+ *
+ * @param input Input an object of typed arrays or JavaScript arrays.
+ * @returns A new Table.
+ */
+export declare function tableFromArrays<I extends Record<string | number | symbol, TypedArray | BigIntArray | readonly unknown[]>>(input: I): Table<{
+    [P in keyof I]: ArrayDataType<I[P]>;
+}>;
diff --git a/igv_component/node_modules/apache-arrow/table.d.ts.map b/igv_component/node_modules/apache-arrow/table.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..08db159d6ebd0466340148b34646183609e5d550
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/table.d.ts.map
@@ -0,0 +1 @@
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diff --git a/igv_component/node_modules/apache-arrow/table.js b/igv_component/node_modules/apache-arrow/table.js
new file mode 100644
index 0000000000000000000000000000000000000000..7cbe2dd530b1252faf7ced60a1a2af848e3c59f8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/table.js
@@ -0,0 +1,361 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+var _a;
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.tableFromArrays = exports.makeTable = exports.Table = void 0;
+const enum_js_1 = require("./enum.js");
+const data_js_1 = require("./data.js");
+const factories_js_1 = require("./factories.js");
+const vector_js_1 = require("./vector.js");
+const schema_js_1 = require("./schema.js");
+const type_js_1 = require("./type.js");
+const typecomparator_js_1 = require("./visitor/typecomparator.js");
+const recordbatch_js_1 = require("./util/recordbatch.js");
+const chunk_js_1 = require("./util/chunk.js");
+const get_js_1 = require("./visitor/get.js");
+const set_js_1 = require("./visitor/set.js");
+const indexof_js_1 = require("./visitor/indexof.js");
+const iterator_js_1 = require("./visitor/iterator.js");
+const bytelength_js_1 = require("./visitor/bytelength.js");
+const vector_js_2 = require("./util/vector.js");
+const recordbatch_js_2 = require("./recordbatch.js");
+/**
+ * Tables are collections of {@link Vector}s and have a {@link Schema}. Use the convenience methods {@link makeTable}
+ * or {@link tableFromArrays} to create a table in JavaScript. To create a table from the IPC format, use
+ * {@link tableFromIPC}.
+ */
+class Table {
+    constructor(...args) {
+        var _b, _c;
+        if (args.length === 0) {
+            this.batches = [];
+            this.schema = new schema_js_1.Schema([]);
+            this._offsets = [0];
+            return this;
+        }
+        let schema;
+        let offsets;
+        if (args[0] instanceof schema_js_1.Schema) {
+            schema = args.shift();
+        }
+        if (args[args.length - 1] instanceof Uint32Array) {
+            offsets = args.pop();
+        }
+        const unwrap = (x) => {
+            if (x) {
+                if (x instanceof recordbatch_js_2.RecordBatch) {
+                    return [x];
+                }
+                else if (x instanceof Table) {
+                    return x.batches;
+                }
+                else if (x instanceof data_js_1.Data) {
+                    if (x.type instanceof type_js_1.Struct) {
+                        return [new recordbatch_js_2.RecordBatch(new schema_js_1.Schema(x.type.children), x)];
+                    }
+                }
+                else if (Array.isArray(x)) {
+                    return x.flatMap(v => unwrap(v));
+                }
+                else if (typeof x[Symbol.iterator] === 'function') {
+                    return [...x].flatMap(v => unwrap(v));
+                }
+                else if (typeof x === 'object') {
+                    const keys = Object.keys(x);
+                    const vecs = keys.map((k) => new vector_js_1.Vector([x[k]]));
+                    const schema = new schema_js_1.Schema(keys.map((k, i) => new schema_js_1.Field(String(k), vecs[i].type)));
+                    const [, batches] = (0, recordbatch_js_1.distributeVectorsIntoRecordBatches)(schema, vecs);
+                    return batches.length === 0 ? [new recordbatch_js_2.RecordBatch(x)] : batches;
+                }
+            }
+            return [];
+        };
+        const batches = args.flatMap(v => unwrap(v));
+        schema = (_c = schema !== null && schema !== void 0 ? schema : (_b = batches[0]) === null || _b === void 0 ? void 0 : _b.schema) !== null && _c !== void 0 ? _c : new schema_js_1.Schema([]);
+        if (!(schema instanceof schema_js_1.Schema)) {
+            throw new TypeError('Table constructor expects a [Schema, RecordBatch[]] pair.');
+        }
+        for (const batch of batches) {
+            if (!(batch instanceof recordbatch_js_2.RecordBatch)) {
+                throw new TypeError('Table constructor expects a [Schema, RecordBatch[]] pair.');
+            }
+            if (!(0, typecomparator_js_1.compareSchemas)(schema, batch.schema)) {
+                throw new TypeError('Table and inner RecordBatch schemas must be equivalent.');
+            }
+        }
+        this.schema = schema;
+        this.batches = batches;
+        this._offsets = offsets !== null && offsets !== void 0 ? offsets : (0, chunk_js_1.computeChunkOffsets)(this.data);
+    }
+    /**
+     * The contiguous {@link RecordBatch `RecordBatch`} chunks of the Table rows.
+     */
+    get data() { return this.batches.map(({ data }) => data); }
+    /**
+     * The number of columns in this Table.
+     */
+    get numCols() { return this.schema.fields.length; }
+    /**
+     * The number of rows in this Table.
+     */
+    get numRows() {
+        return this.data.reduce((numRows, data) => numRows + data.length, 0);
+    }
+    /**
+     * The number of null rows in this Table.
+     */
+    get nullCount() {
+        if (this._nullCount === -1) {
+            this._nullCount = (0, chunk_js_1.computeChunkNullCounts)(this.data);
+        }
+        return this._nullCount;
+    }
+    /**
+     * Check whether an element is null.
+     *
+     * @param index The index at which to read the validity bitmap.
+     */
+    // @ts-ignore
+    isValid(index) { return false; }
+    /**
+     * Get an element value by position.
+     *
+     * @param index The index of the element to read.
+     */
+    // @ts-ignore
+    get(index) { return null; }
+    /**
+     * Set an element value by position.
+     *
+     * @param index The index of the element to write.
+     * @param value The value to set.
+     */
+    // @ts-ignore
+    set(index, value) { return; }
+    /**
+     * Retrieve the index of the first occurrence of a value in an Vector.
+     *
+     * @param element The value to locate in the Vector.
+     * @param offset The index at which to begin the search. If offset is omitted, the search starts at index 0.
+     */
+    // @ts-ignore
+    indexOf(element, offset) { return -1; }
+    /**
+     * Get the size in bytes of an element by index.
+     * @param index The index at which to get the byteLength.
+     */
+    // @ts-ignore
+    getByteLength(index) { return 0; }
+    /**
+     * Iterator for rows in this Table.
+     */
+    [Symbol.iterator]() {
+        if (this.batches.length > 0) {
+            return iterator_js_1.instance.visit(new vector_js_1.Vector(this.data));
+        }
+        return (new Array(0))[Symbol.iterator]();
+    }
+    /**
+     * Return a JavaScript Array of the Table rows.
+     *
+     * @returns An Array of Table rows.
+     */
+    toArray() {
+        return [...this];
+    }
+    /**
+     * Returns a string representation of the Table rows.
+     *
+     * @returns A string representation of the Table rows.
+     */
+    toString() {
+        return `[\n  ${this.toArray().join(',\n  ')}\n]`;
+    }
+    /**
+     * Combines two or more Tables of the same schema.
+     *
+     * @param others Additional Tables to add to the end of this Tables.
+     */
+    concat(...others) {
+        const schema = this.schema;
+        const data = this.data.concat(others.flatMap(({ data }) => data));
+        return new Table(schema, data.map((data) => new recordbatch_js_2.RecordBatch(schema, data)));
+    }
+    /**
+     * Return a zero-copy sub-section of this Table.
+     *
+     * @param begin The beginning of the specified portion of the Table.
+     * @param end The end of the specified portion of the Table. This is exclusive of the element at the index 'end'.
+     */
+    slice(begin, end) {
+        const schema = this.schema;
+        [begin, end] = (0, vector_js_2.clampRange)({ length: this.numRows }, begin, end);
+        const data = (0, chunk_js_1.sliceChunks)(this.data, this._offsets, begin, end);
+        return new Table(schema, data.map((chunk) => new recordbatch_js_2.RecordBatch(schema, chunk)));
+    }
+    /**
+     * Returns a child Vector by name, or null if this Vector has no child with the given name.
+     *
+     * @param name The name of the child to retrieve.
+     */
+    getChild(name) {
+        return this.getChildAt(this.schema.fields.findIndex((f) => f.name === name));
+    }
+    /**
+     * Returns a child Vector by index, or null if this Vector has no child at the supplied index.
+     *
+     * @param index The index of the child to retrieve.
+     */
+    getChildAt(index) {
+        if (index > -1 && index < this.schema.fields.length) {
+            const data = this.data.map((data) => data.children[index]);
+            if (data.length === 0) {
+                const { type } = this.schema.fields[index];
+                const empty = (0, data_js_1.makeData)({ type, length: 0, nullCount: 0 });
+                data.push(empty._changeLengthAndBackfillNullBitmap(this.numRows));
+            }
+            return new vector_js_1.Vector(data);
+        }
+        return null;
+    }
+    /**
+     * Sets a child Vector by name.
+     *
+     * @param name The name of the child to overwrite.
+     * @returns A new Table with the supplied child for the specified name.
+     */
+    setChild(name, child) {
+        var _b;
+        return this.setChildAt((_b = this.schema.fields) === null || _b === void 0 ? void 0 : _b.findIndex((f) => f.name === name), child);
+    }
+    setChildAt(index, child) {
+        let schema = this.schema;
+        let batches = [...this.batches];
+        if (index > -1 && index < this.numCols) {
+            if (!child) {
+                child = new vector_js_1.Vector([(0, data_js_1.makeData)({ type: new type_js_1.Null, length: this.numRows })]);
+            }
+            const fields = schema.fields.slice();
+            const field = fields[index].clone({ type: child.type });
+            const children = this.schema.fields.map((_, i) => this.getChildAt(i));
+            [fields[index], children[index]] = [field, child];
+            [schema, batches] = (0, recordbatch_js_1.distributeVectorsIntoRecordBatches)(schema, children);
+        }
+        return new Table(schema, batches);
+    }
+    /**
+     * Construct a new Table containing only specified columns.
+     *
+     * @param columnNames Names of columns to keep.
+     * @returns A new Table of columns matching the specified names.
+     */
+    select(columnNames) {
+        const nameToIndex = this.schema.fields.reduce((m, f, i) => m.set(f.name, i), new Map());
+        return this.selectAt(columnNames.map((columnName) => nameToIndex.get(columnName)).filter((x) => x > -1));
+    }
+    /**
+     * Construct a new Table containing only columns at the specified indices.
+     *
+     * @param columnIndices Indices of columns to keep.
+     * @returns A new Table of columns at the specified indices.
+     */
+    selectAt(columnIndices) {
+        const schema = this.schema.selectAt(columnIndices);
+        const data = this.batches.map((batch) => batch.selectAt(columnIndices));
+        return new Table(schema, data);
+    }
+    assign(other) {
+        const fields = this.schema.fields;
+        const [indices, oldToNew] = other.schema.fields.reduce((memo, f2, newIdx) => {
+            const [indices, oldToNew] = memo;
+            const i = fields.findIndex((f) => f.name === f2.name);
+            ~i ? (oldToNew[i] = newIdx) : indices.push(newIdx);
+            return memo;
+        }, [[], []]);
+        const schema = this.schema.assign(other.schema);
+        const columns = [
+            ...fields.map((_, i) => [i, oldToNew[i]]).map(([i, j]) => (j === undefined ? this.getChildAt(i) : other.getChildAt(j))),
+            ...indices.map((i) => other.getChildAt(i))
+        ].filter(Boolean);
+        return new Table(...(0, recordbatch_js_1.distributeVectorsIntoRecordBatches)(schema, columns));
+    }
+}
+exports.Table = Table;
+_a = Symbol.toStringTag;
+// Initialize this static property via an IIFE so bundlers don't tree-shake
+// out this logic, but also so we're still compliant with `"sideEffects": false`
+Table[_a] = ((proto) => {
+    proto.schema = null;
+    proto.batches = [];
+    proto._offsets = new Uint32Array([0]);
+    proto._nullCount = -1;
+    proto[Symbol.isConcatSpreadable] = true;
+    proto['isValid'] = (0, chunk_js_1.wrapChunkedCall1)(chunk_js_1.isChunkedValid);
+    proto['get'] = (0, chunk_js_1.wrapChunkedCall1)(get_js_1.instance.getVisitFn(enum_js_1.Type.Struct));
+    proto['set'] = (0, chunk_js_1.wrapChunkedCall2)(set_js_1.instance.getVisitFn(enum_js_1.Type.Struct));
+    proto['indexOf'] = (0, chunk_js_1.wrapChunkedIndexOf)(indexof_js_1.instance.getVisitFn(enum_js_1.Type.Struct));
+    proto['getByteLength'] = (0, chunk_js_1.wrapChunkedCall1)(bytelength_js_1.instance.getVisitFn(enum_js_1.Type.Struct));
+    return 'Table';
+})(Table.prototype);
+/**
+ * Creates a new Table from an object of typed arrays.
+ *
+*  @example
+ * ```ts
+ * const table = makeTable({
+ *   a: new Int8Array([1, 2, 3]),
+ * })
+ * ```
+ *
+ * @param input Input an object of typed arrays.
+ * @returns A new Table.
+ */
+function makeTable(input) {
+    const vecs = {};
+    const inputs = Object.entries(input);
+    for (const [key, col] of inputs) {
+        vecs[key] = (0, vector_js_1.makeVector)(col);
+    }
+    return new Table(vecs);
+}
+exports.makeTable = makeTable;
+/**
+ * Creates a new Table from an object of typed arrays or JavaScript arrays.
+ *
+ *  @example
+ * ```ts
+ * const table = tableFromArrays({
+ *   a: [1, 2, 3],
+ *   b: new Int8Array([1, 2, 3]),
+ * })
+ * ```
+ *
+ * @param input Input an object of typed arrays or JavaScript arrays.
+ * @returns A new Table.
+ */
+function tableFromArrays(input) {
+    const vecs = {};
+    const inputs = Object.entries(input);
+    for (const [key, col] of inputs) {
+        vecs[key] = (0, factories_js_1.vectorFromArray)(col);
+    }
+    return new Table(vecs);
+}
+exports.tableFromArrays = tableFromArrays;
+
+//# sourceMappingURL=table.js.map
diff --git a/igv_component/node_modules/apache-arrow/table.js.map b/igv_component/node_modules/apache-arrow/table.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..d110e0f2acbdeb54e4e37dd3495f98e9a17e3a94
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/table.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/table.mjs b/igv_component/node_modules/apache-arrow/table.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..e9eba1ec5c55c16cac2c998d3d983064f83a4aff
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/table.mjs
@@ -0,0 +1,355 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+var _a;
+import { Type } from './enum.mjs';
+import { Data, makeData } from './data.mjs';
+import { vectorFromArray } from './factories.mjs';
+import { makeVector, Vector } from './vector.mjs';
+import { Field, Schema } from './schema.mjs';
+import { Null, Struct } from './type.mjs';
+import { compareSchemas } from './visitor/typecomparator.mjs';
+import { distributeVectorsIntoRecordBatches } from './util/recordbatch.mjs';
+import { isChunkedValid, computeChunkOffsets, computeChunkNullCounts, wrapChunkedCall1, wrapChunkedCall2, wrapChunkedIndexOf, sliceChunks, } from './util/chunk.mjs';
+import { instance as getVisitor } from './visitor/get.mjs';
+import { instance as setVisitor } from './visitor/set.mjs';
+import { instance as indexOfVisitor } from './visitor/indexof.mjs';
+import { instance as iteratorVisitor } from './visitor/iterator.mjs';
+import { instance as byteLengthVisitor } from './visitor/bytelength.mjs';
+import { clampRange } from './util/vector.mjs';
+import { RecordBatch } from './recordbatch.mjs';
+/**
+ * Tables are collections of {@link Vector}s and have a {@link Schema}. Use the convenience methods {@link makeTable}
+ * or {@link tableFromArrays} to create a table in JavaScript. To create a table from the IPC format, use
+ * {@link tableFromIPC}.
+ */
+export class Table {
+    constructor(...args) {
+        var _b, _c;
+        if (args.length === 0) {
+            this.batches = [];
+            this.schema = new Schema([]);
+            this._offsets = [0];
+            return this;
+        }
+        let schema;
+        let offsets;
+        if (args[0] instanceof Schema) {
+            schema = args.shift();
+        }
+        if (args[args.length - 1] instanceof Uint32Array) {
+            offsets = args.pop();
+        }
+        const unwrap = (x) => {
+            if (x) {
+                if (x instanceof RecordBatch) {
+                    return [x];
+                }
+                else if (x instanceof Table) {
+                    return x.batches;
+                }
+                else if (x instanceof Data) {
+                    if (x.type instanceof Struct) {
+                        return [new RecordBatch(new Schema(x.type.children), x)];
+                    }
+                }
+                else if (Array.isArray(x)) {
+                    return x.flatMap(v => unwrap(v));
+                }
+                else if (typeof x[Symbol.iterator] === 'function') {
+                    return [...x].flatMap(v => unwrap(v));
+                }
+                else if (typeof x === 'object') {
+                    const keys = Object.keys(x);
+                    const vecs = keys.map((k) => new Vector([x[k]]));
+                    const schema = new Schema(keys.map((k, i) => new Field(String(k), vecs[i].type)));
+                    const [, batches] = distributeVectorsIntoRecordBatches(schema, vecs);
+                    return batches.length === 0 ? [new RecordBatch(x)] : batches;
+                }
+            }
+            return [];
+        };
+        const batches = args.flatMap(v => unwrap(v));
+        schema = (_c = schema !== null && schema !== void 0 ? schema : (_b = batches[0]) === null || _b === void 0 ? void 0 : _b.schema) !== null && _c !== void 0 ? _c : new Schema([]);
+        if (!(schema instanceof Schema)) {
+            throw new TypeError('Table constructor expects a [Schema, RecordBatch[]] pair.');
+        }
+        for (const batch of batches) {
+            if (!(batch instanceof RecordBatch)) {
+                throw new TypeError('Table constructor expects a [Schema, RecordBatch[]] pair.');
+            }
+            if (!compareSchemas(schema, batch.schema)) {
+                throw new TypeError('Table and inner RecordBatch schemas must be equivalent.');
+            }
+        }
+        this.schema = schema;
+        this.batches = batches;
+        this._offsets = offsets !== null && offsets !== void 0 ? offsets : computeChunkOffsets(this.data);
+    }
+    /**
+     * The contiguous {@link RecordBatch `RecordBatch`} chunks of the Table rows.
+     */
+    get data() { return this.batches.map(({ data }) => data); }
+    /**
+     * The number of columns in this Table.
+     */
+    get numCols() { return this.schema.fields.length; }
+    /**
+     * The number of rows in this Table.
+     */
+    get numRows() {
+        return this.data.reduce((numRows, data) => numRows + data.length, 0);
+    }
+    /**
+     * The number of null rows in this Table.
+     */
+    get nullCount() {
+        if (this._nullCount === -1) {
+            this._nullCount = computeChunkNullCounts(this.data);
+        }
+        return this._nullCount;
+    }
+    /**
+     * Check whether an element is null.
+     *
+     * @param index The index at which to read the validity bitmap.
+     */
+    // @ts-ignore
+    isValid(index) { return false; }
+    /**
+     * Get an element value by position.
+     *
+     * @param index The index of the element to read.
+     */
+    // @ts-ignore
+    get(index) { return null; }
+    /**
+     * Set an element value by position.
+     *
+     * @param index The index of the element to write.
+     * @param value The value to set.
+     */
+    // @ts-ignore
+    set(index, value) { return; }
+    /**
+     * Retrieve the index of the first occurrence of a value in an Vector.
+     *
+     * @param element The value to locate in the Vector.
+     * @param offset The index at which to begin the search. If offset is omitted, the search starts at index 0.
+     */
+    // @ts-ignore
+    indexOf(element, offset) { return -1; }
+    /**
+     * Get the size in bytes of an element by index.
+     * @param index The index at which to get the byteLength.
+     */
+    // @ts-ignore
+    getByteLength(index) { return 0; }
+    /**
+     * Iterator for rows in this Table.
+     */
+    [Symbol.iterator]() {
+        if (this.batches.length > 0) {
+            return iteratorVisitor.visit(new Vector(this.data));
+        }
+        return (new Array(0))[Symbol.iterator]();
+    }
+    /**
+     * Return a JavaScript Array of the Table rows.
+     *
+     * @returns An Array of Table rows.
+     */
+    toArray() {
+        return [...this];
+    }
+    /**
+     * Returns a string representation of the Table rows.
+     *
+     * @returns A string representation of the Table rows.
+     */
+    toString() {
+        return `[\n  ${this.toArray().join(',\n  ')}\n]`;
+    }
+    /**
+     * Combines two or more Tables of the same schema.
+     *
+     * @param others Additional Tables to add to the end of this Tables.
+     */
+    concat(...others) {
+        const schema = this.schema;
+        const data = this.data.concat(others.flatMap(({ data }) => data));
+        return new Table(schema, data.map((data) => new RecordBatch(schema, data)));
+    }
+    /**
+     * Return a zero-copy sub-section of this Table.
+     *
+     * @param begin The beginning of the specified portion of the Table.
+     * @param end The end of the specified portion of the Table. This is exclusive of the element at the index 'end'.
+     */
+    slice(begin, end) {
+        const schema = this.schema;
+        [begin, end] = clampRange({ length: this.numRows }, begin, end);
+        const data = sliceChunks(this.data, this._offsets, begin, end);
+        return new Table(schema, data.map((chunk) => new RecordBatch(schema, chunk)));
+    }
+    /**
+     * Returns a child Vector by name, or null if this Vector has no child with the given name.
+     *
+     * @param name The name of the child to retrieve.
+     */
+    getChild(name) {
+        return this.getChildAt(this.schema.fields.findIndex((f) => f.name === name));
+    }
+    /**
+     * Returns a child Vector by index, or null if this Vector has no child at the supplied index.
+     *
+     * @param index The index of the child to retrieve.
+     */
+    getChildAt(index) {
+        if (index > -1 && index < this.schema.fields.length) {
+            const data = this.data.map((data) => data.children[index]);
+            if (data.length === 0) {
+                const { type } = this.schema.fields[index];
+                const empty = makeData({ type, length: 0, nullCount: 0 });
+                data.push(empty._changeLengthAndBackfillNullBitmap(this.numRows));
+            }
+            return new Vector(data);
+        }
+        return null;
+    }
+    /**
+     * Sets a child Vector by name.
+     *
+     * @param name The name of the child to overwrite.
+     * @returns A new Table with the supplied child for the specified name.
+     */
+    setChild(name, child) {
+        var _b;
+        return this.setChildAt((_b = this.schema.fields) === null || _b === void 0 ? void 0 : _b.findIndex((f) => f.name === name), child);
+    }
+    setChildAt(index, child) {
+        let schema = this.schema;
+        let batches = [...this.batches];
+        if (index > -1 && index < this.numCols) {
+            if (!child) {
+                child = new Vector([makeData({ type: new Null, length: this.numRows })]);
+            }
+            const fields = schema.fields.slice();
+            const field = fields[index].clone({ type: child.type });
+            const children = this.schema.fields.map((_, i) => this.getChildAt(i));
+            [fields[index], children[index]] = [field, child];
+            [schema, batches] = distributeVectorsIntoRecordBatches(schema, children);
+        }
+        return new Table(schema, batches);
+    }
+    /**
+     * Construct a new Table containing only specified columns.
+     *
+     * @param columnNames Names of columns to keep.
+     * @returns A new Table of columns matching the specified names.
+     */
+    select(columnNames) {
+        const nameToIndex = this.schema.fields.reduce((m, f, i) => m.set(f.name, i), new Map());
+        return this.selectAt(columnNames.map((columnName) => nameToIndex.get(columnName)).filter((x) => x > -1));
+    }
+    /**
+     * Construct a new Table containing only columns at the specified indices.
+     *
+     * @param columnIndices Indices of columns to keep.
+     * @returns A new Table of columns at the specified indices.
+     */
+    selectAt(columnIndices) {
+        const schema = this.schema.selectAt(columnIndices);
+        const data = this.batches.map((batch) => batch.selectAt(columnIndices));
+        return new Table(schema, data);
+    }
+    assign(other) {
+        const fields = this.schema.fields;
+        const [indices, oldToNew] = other.schema.fields.reduce((memo, f2, newIdx) => {
+            const [indices, oldToNew] = memo;
+            const i = fields.findIndex((f) => f.name === f2.name);
+            ~i ? (oldToNew[i] = newIdx) : indices.push(newIdx);
+            return memo;
+        }, [[], []]);
+        const schema = this.schema.assign(other.schema);
+        const columns = [
+            ...fields.map((_, i) => [i, oldToNew[i]]).map(([i, j]) => (j === undefined ? this.getChildAt(i) : other.getChildAt(j))),
+            ...indices.map((i) => other.getChildAt(i))
+        ].filter(Boolean);
+        return new Table(...distributeVectorsIntoRecordBatches(schema, columns));
+    }
+}
+_a = Symbol.toStringTag;
+// Initialize this static property via an IIFE so bundlers don't tree-shake
+// out this logic, but also so we're still compliant with `"sideEffects": false`
+Table[_a] = ((proto) => {
+    proto.schema = null;
+    proto.batches = [];
+    proto._offsets = new Uint32Array([0]);
+    proto._nullCount = -1;
+    proto[Symbol.isConcatSpreadable] = true;
+    proto['isValid'] = wrapChunkedCall1(isChunkedValid);
+    proto['get'] = wrapChunkedCall1(getVisitor.getVisitFn(Type.Struct));
+    proto['set'] = wrapChunkedCall2(setVisitor.getVisitFn(Type.Struct));
+    proto['indexOf'] = wrapChunkedIndexOf(indexOfVisitor.getVisitFn(Type.Struct));
+    proto['getByteLength'] = wrapChunkedCall1(byteLengthVisitor.getVisitFn(Type.Struct));
+    return 'Table';
+})(Table.prototype);
+/**
+ * Creates a new Table from an object of typed arrays.
+ *
+*  @example
+ * ```ts
+ * const table = makeTable({
+ *   a: new Int8Array([1, 2, 3]),
+ * })
+ * ```
+ *
+ * @param input Input an object of typed arrays.
+ * @returns A new Table.
+ */
+export function makeTable(input) {
+    const vecs = {};
+    const inputs = Object.entries(input);
+    for (const [key, col] of inputs) {
+        vecs[key] = makeVector(col);
+    }
+    return new Table(vecs);
+}
+/**
+ * Creates a new Table from an object of typed arrays or JavaScript arrays.
+ *
+ *  @example
+ * ```ts
+ * const table = tableFromArrays({
+ *   a: [1, 2, 3],
+ *   b: new Int8Array([1, 2, 3]),
+ * })
+ * ```
+ *
+ * @param input Input an object of typed arrays or JavaScript arrays.
+ * @returns A new Table.
+ */
+export function tableFromArrays(input) {
+    const vecs = {};
+    const inputs = Object.entries(input);
+    for (const [key, col] of inputs) {
+        vecs[key] = vectorFromArray(col);
+    }
+    return new Table(vecs);
+}
+
+//# sourceMappingURL=table.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/table.mjs.map b/igv_component/node_modules/apache-arrow/table.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..967f62b7578c2e4b2445d1937ed8c3c30a8334d8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/table.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/type.d.ts b/igv_component/node_modules/apache-arrow/type.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..5d53795ccd6d36d11f69554774dc0489e86ebecb
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/type.d.ts
@@ -0,0 +1,599 @@
+import { Field } from './schema.js';
+import { Vector } from './vector.js';
+import { MapRow } from './row/map.js';
+import { StructRow, StructRowProxy } from './row/struct.js';
+import { Long } from 'flatbuffers';
+import { TypedArrayConstructor } from './interfaces.js';
+import { Type, Precision, UnionMode, DateUnit, TimeUnit, IntervalUnit } from './enum.js';
+/** @ignore */
+export declare type TimeBitWidth = 32 | 64;
+/** @ignore */
+export declare type IntBitWidth = 8 | 16 | 32 | 64;
+/** @ignore */
+export declare type IsSigned = {
+    'true': true;
+    'false': false;
+};
+export interface DataType<TType extends Type = Type, TChildren extends TypeMap = any> {
+    readonly TType: TType;
+    readonly TArray: any;
+    readonly TValue: any;
+    readonly TChildren: TChildren;
+    readonly ArrayType: any;
+    readonly children: Field<TChildren[keyof TChildren]>[];
+}
+/**
+ * An abstract base class for classes that encapsulate metadata about each of
+ * the logical types that Arrow can represent.
+ */
+export declare abstract class DataType<TType extends Type = Type, TChildren extends TypeMap = any> {
+    [Symbol.toStringTag]: string;
+    /** @nocollapse */ static isNull(x: any): x is Null;
+    /** @nocollapse */ static isInt(x: any): x is Int_;
+    /** @nocollapse */ static isFloat(x: any): x is Float;
+    /** @nocollapse */ static isBinary(x: any): x is Binary;
+    /** @nocollapse */ static isUtf8(x: any): x is Utf8;
+    /** @nocollapse */ static isBool(x: any): x is Bool;
+    /** @nocollapse */ static isDecimal(x: any): x is Decimal;
+    /** @nocollapse */ static isDate(x: any): x is Date_;
+    /** @nocollapse */ static isTime(x: any): x is Time_;
+    /** @nocollapse */ static isTimestamp(x: any): x is Timestamp_;
+    /** @nocollapse */ static isInterval(x: any): x is Interval_;
+    /** @nocollapse */ static isList(x: any): x is List;
+    /** @nocollapse */ static isStruct(x: any): x is Struct;
+    /** @nocollapse */ static isUnion(x: any): x is Union_;
+    /** @nocollapse */ static isFixedSizeBinary(x: any): x is FixedSizeBinary;
+    /** @nocollapse */ static isFixedSizeList(x: any): x is FixedSizeList;
+    /** @nocollapse */ static isMap(x: any): x is Map_;
+    /** @nocollapse */ static isDictionary(x: any): x is Dictionary;
+    /** @nocollapse */ static isDenseUnion(x: any): x is DenseUnion;
+    /** @nocollapse */ static isSparseUnion(x: any): x is SparseUnion;
+    get typeId(): TType;
+    protected static [Symbol.toStringTag]: string;
+}
+/** @ignore */
+export interface Null extends DataType<Type.Null> {
+    TArray: void;
+    TValue: null;
+}
+/** @ignore */
+export declare class Null extends DataType<Type.Null> {
+    toString(): string;
+    get typeId(): Type.Null;
+    protected static [Symbol.toStringTag]: string;
+}
+/** @ignore */
+declare type Ints = Type.Int | Type.Int8 | Type.Int16 | Type.Int32 | Type.Int64 | Type.Uint8 | Type.Uint16 | Type.Uint32 | Type.Uint64;
+/** @ignore */
+declare type IType = {
+    [Type.Int]: {
+        bitWidth: IntBitWidth;
+        isSigned: true | false;
+        TArray: IntArray;
+        TValue: number | bigint;
+    };
+    [Type.Int8]: {
+        bitWidth: 8;
+        isSigned: true;
+        TArray: Int8Array;
+        TValue: number;
+    };
+    [Type.Int16]: {
+        bitWidth: 16;
+        isSigned: true;
+        TArray: Int16Array;
+        TValue: number;
+    };
+    [Type.Int32]: {
+        bitWidth: 32;
+        isSigned: true;
+        TArray: Int32Array;
+        TValue: number;
+    };
+    [Type.Int64]: {
+        bitWidth: 64;
+        isSigned: true;
+        TArray: BigInt64Array;
+        TValue: bigint;
+    };
+    [Type.Uint8]: {
+        bitWidth: 8;
+        isSigned: false;
+        TArray: Uint8Array;
+        TValue: number;
+    };
+    [Type.Uint16]: {
+        bitWidth: 16;
+        isSigned: false;
+        TArray: Uint16Array;
+        TValue: number;
+    };
+    [Type.Uint32]: {
+        bitWidth: 32;
+        isSigned: false;
+        TArray: Uint32Array;
+        TValue: number;
+    };
+    [Type.Uint64]: {
+        bitWidth: 64;
+        isSigned: false;
+        TArray: BigUint64Array;
+        TValue: bigint;
+    };
+};
+/** @ignore */
+interface Int_<T extends Ints = Ints> extends DataType<T> {
+    TArray: IType[T]['TArray'];
+    TValue: IType[T]['TValue'];
+}
+/** @ignore */
+declare class Int_<T extends Ints = Ints> extends DataType<T> {
+    readonly isSigned: IType[T]['isSigned'];
+    readonly bitWidth: IType[T]['bitWidth'];
+    constructor(isSigned: IType[T]['isSigned'], bitWidth: IType[T]['bitWidth']);
+    get typeId(): T;
+    get ArrayType(): Int8ArrayConstructor | Uint8ArrayConstructor | Int16ArrayConstructor | Uint16ArrayConstructor | Int32ArrayConstructor | Uint32ArrayConstructor | BigInt64ArrayConstructor | BigUint64ArrayConstructor;
+    toString(): string;
+    protected static [Symbol.toStringTag]: string;
+}
+export { Int_ as Int };
+/** @ignore */
+export declare class Int8 extends Int_<Type.Int8> {
+    constructor();
+    get ArrayType(): Int8ArrayConstructor;
+}
+/** @ignore */
+export declare class Int16 extends Int_<Type.Int16> {
+    constructor();
+    get ArrayType(): Int16ArrayConstructor;
+}
+/** @ignore */
+export declare class Int32 extends Int_<Type.Int32> {
+    constructor();
+    get ArrayType(): Int32ArrayConstructor;
+}
+/** @ignore */
+export declare class Int64 extends Int_<Type.Int64> {
+    constructor();
+    get ArrayType(): BigInt64ArrayConstructor;
+}
+/** @ignore */
+export declare class Uint8 extends Int_<Type.Uint8> {
+    constructor();
+    get ArrayType(): Uint8ArrayConstructor;
+}
+/** @ignore */
+export declare class Uint16 extends Int_<Type.Uint16> {
+    constructor();
+    get ArrayType(): Uint16ArrayConstructor;
+}
+/** @ignore */
+export declare class Uint32 extends Int_<Type.Uint32> {
+    constructor();
+    get ArrayType(): Uint32ArrayConstructor;
+}
+/** @ignore */
+export declare class Uint64 extends Int_<Type.Uint64> {
+    constructor();
+    get ArrayType(): BigUint64ArrayConstructor;
+}
+/** @ignore */
+declare type Floats = Type.Float | Type.Float16 | Type.Float32 | Type.Float64;
+/** @ignore */
+declare type FType = {
+    [Type.Float]: {
+        precision: Precision;
+        TArray: FloatArray;
+        TValue: number;
+    };
+    [Type.Float16]: {
+        precision: Precision.HALF;
+        TArray: Uint16Array;
+        TValue: number;
+    };
+    [Type.Float32]: {
+        precision: Precision.SINGLE;
+        TArray: Float32Array;
+        TValue: number;
+    };
+    [Type.Float64]: {
+        precision: Precision.DOUBLE;
+        TArray: Float64Array;
+        TValue: number;
+    };
+};
+/** @ignore */
+export interface Float<T extends Floats = Floats> extends DataType<T> {
+    TArray: FType[T]['TArray'];
+    TValue: number;
+}
+/** @ignore */
+export declare class Float<T extends Floats = Floats> extends DataType<T> {
+    readonly precision: Precision;
+    constructor(precision: Precision);
+    get typeId(): T;
+    get ArrayType(): TypedArrayConstructor<FType[T]['TArray']>;
+    toString(): string;
+    protected static [Symbol.toStringTag]: string;
+}
+/** @ignore */
+export declare class Float16 extends Float<Type.Float16> {
+    constructor();
+}
+/** @ignore */
+export declare class Float32 extends Float<Type.Float32> {
+    constructor();
+}
+/** @ignore */
+export declare class Float64 extends Float<Type.Float64> {
+    constructor();
+}
+/** @ignore */
+export interface Binary extends DataType<Type.Binary> {
+    TArray: Uint8Array;
+    TValue: Uint8Array;
+    ArrayType: TypedArrayConstructor<Uint8Array>;
+}
+/** @ignore */
+export declare class Binary extends DataType<Type.Binary> {
+    constructor();
+    get typeId(): Type.Binary;
+    toString(): string;
+    protected static [Symbol.toStringTag]: string;
+}
+/** @ignore */
+export interface Utf8 extends DataType<Type.Utf8> {
+    TArray: Uint8Array;
+    TValue: string;
+    ArrayType: TypedArrayConstructor<Uint8Array>;
+}
+/** @ignore */
+export declare class Utf8 extends DataType<Type.Utf8> {
+    constructor();
+    get typeId(): Type.Utf8;
+    toString(): string;
+    protected static [Symbol.toStringTag]: string;
+}
+/** @ignore */
+export interface Bool extends DataType<Type.Bool> {
+    TArray: Uint8Array;
+    TValue: boolean;
+    ArrayType: TypedArrayConstructor<Uint8Array>;
+}
+/** @ignore */
+export declare class Bool extends DataType<Type.Bool> {
+    constructor();
+    get typeId(): Type.Bool;
+    toString(): string;
+    protected static [Symbol.toStringTag]: string;
+}
+/** @ignore */
+export interface Decimal extends DataType<Type.Decimal> {
+    TArray: Uint32Array;
+    TValue: Uint32Array;
+    ArrayType: TypedArrayConstructor<Uint32Array>;
+}
+/** @ignore */
+export declare class Decimal extends DataType<Type.Decimal> {
+    readonly scale: number;
+    readonly precision: number;
+    readonly bitWidth: number;
+    constructor(scale: number, precision: number, bitWidth?: number);
+    get typeId(): Type.Decimal;
+    toString(): string;
+    protected static [Symbol.toStringTag]: string;
+}
+/** @ignore */
+export declare type Dates = Type.Date | Type.DateDay | Type.DateMillisecond;
+/** @ignore */
+export interface Date_<T extends Dates = Dates> extends DataType<T> {
+    TArray: Int32Array;
+    TValue: Date;
+    ArrayType: TypedArrayConstructor<Int32Array>;
+}
+/** @ignore */
+export declare class Date_<T extends Dates = Dates> extends DataType<T> {
+    readonly unit: DateUnit;
+    constructor(unit: DateUnit);
+    get typeId(): T;
+    toString(): string;
+    protected static [Symbol.toStringTag]: string;
+}
+/** @ignore */
+export declare class DateDay extends Date_<Type.DateDay> {
+    constructor();
+}
+/** @ignore */
+export declare class DateMillisecond extends Date_<Type.DateMillisecond> {
+    constructor();
+}
+/** @ignore */
+declare type Times = Type.Time | Type.TimeSecond | Type.TimeMillisecond | Type.TimeMicrosecond | Type.TimeNanosecond;
+/** @ignore */
+declare type TimesType = {
+    [Type.Time]: {
+        unit: TimeUnit;
+        TValue: number | bigint;
+        TArray: Int32Array | BigInt64Array;
+    };
+    [Type.TimeSecond]: {
+        unit: TimeUnit.SECOND;
+        TValue: number;
+        TArray: Int32Array;
+    };
+    [Type.TimeMillisecond]: {
+        unit: TimeUnit.MILLISECOND;
+        TValue: number;
+        TArray: Int32Array;
+    };
+    [Type.TimeMicrosecond]: {
+        unit: TimeUnit.MICROSECOND;
+        TValue: bigint;
+        TArray: BigInt64Array;
+    };
+    [Type.TimeNanosecond]: {
+        unit: TimeUnit.NANOSECOND;
+        TValue: bigint;
+        TArray: BigInt64Array;
+    };
+};
+/** @ignore */
+interface Time_<T extends Times = Times> extends DataType<T> {
+    TArray: TimesType[T]['TArray'];
+    TValue: TimesType[T]['TValue'];
+}
+/** @ignore */
+declare class Time_<T extends Times = Times> extends DataType<T> {
+    readonly unit: TimesType[T]['unit'];
+    readonly bitWidth: TimeBitWidth;
+    constructor(unit: TimesType[T]['unit'], bitWidth: TimeBitWidth);
+    get typeId(): T;
+    toString(): string;
+    get ArrayType(): Int32ArrayConstructor | BigInt64ArrayConstructor;
+    protected static [Symbol.toStringTag]: string;
+}
+export { Time_ as Time };
+/** @ignore */
+export declare class TimeSecond extends Time_<Type.TimeSecond> {
+    constructor();
+}
+/** @ignore */
+export declare class TimeMillisecond extends Time_<Type.TimeMillisecond> {
+    constructor();
+}
+/** @ignore */
+export declare class TimeMicrosecond extends Time_<Type.TimeMicrosecond> {
+    constructor();
+}
+/** @ignore */
+export declare class TimeNanosecond extends Time_<Type.TimeNanosecond> {
+    constructor();
+}
+/** @ignore */
+declare type Timestamps = Type.Timestamp | Type.TimestampSecond | Type.TimestampMillisecond | Type.TimestampMicrosecond | Type.TimestampNanosecond;
+/** @ignore */
+interface Timestamp_<T extends Timestamps = Timestamps> extends DataType<T> {
+    TArray: Int32Array;
+    TValue: number;
+    ArrayType: TypedArrayConstructor<Int32Array>;
+}
+/** @ignore */
+declare class Timestamp_<T extends Timestamps = Timestamps> extends DataType<T> {
+    readonly unit: TimeUnit;
+    readonly timezone?: string | null | undefined;
+    constructor(unit: TimeUnit, timezone?: string | null | undefined);
+    get typeId(): T;
+    toString(): string;
+    protected static [Symbol.toStringTag]: string;
+}
+export { Timestamp_ as Timestamp };
+/** @ignore */
+export declare class TimestampSecond extends Timestamp_<Type.TimestampSecond> {
+    constructor(timezone?: string | null);
+}
+/** @ignore */
+export declare class TimestampMillisecond extends Timestamp_<Type.TimestampMillisecond> {
+    constructor(timezone?: string | null);
+}
+/** @ignore */
+export declare class TimestampMicrosecond extends Timestamp_<Type.TimestampMicrosecond> {
+    constructor(timezone?: string | null);
+}
+/** @ignore */
+export declare class TimestampNanosecond extends Timestamp_<Type.TimestampNanosecond> {
+    constructor(timezone?: string | null);
+}
+/** @ignore */
+declare type Intervals = Type.Interval | Type.IntervalDayTime | Type.IntervalYearMonth;
+/** @ignore */
+interface Interval_<T extends Intervals = Intervals> extends DataType<T> {
+    TArray: Int32Array;
+    TValue: Int32Array;
+    ArrayType: TypedArrayConstructor<Int32Array>;
+}
+/** @ignore */
+declare class Interval_<T extends Intervals = Intervals> extends DataType<T> {
+    readonly unit: IntervalUnit;
+    constructor(unit: IntervalUnit);
+    get typeId(): T;
+    toString(): string;
+    protected static [Symbol.toStringTag]: string;
+}
+export { Interval_ as Interval };
+/** @ignore */
+export declare class IntervalDayTime extends Interval_<Type.IntervalDayTime> {
+    constructor();
+}
+/** @ignore */
+export declare class IntervalYearMonth extends Interval_<Type.IntervalYearMonth> {
+    constructor();
+}
+/** @ignore */
+export interface List<T extends DataType = any> extends DataType<Type.List, {
+    [0]: T;
+}> {
+    TArray: Array<T>;
+    TValue: Vector<T>;
+}
+/** @ignore */
+export declare class List<T extends DataType = any> extends DataType<Type.List, {
+    [0]: T;
+}> {
+    constructor(child: Field<T>);
+    readonly children: Field<T>[];
+    get typeId(): Type.List;
+    toString(): string;
+    get valueType(): T;
+    get valueField(): Field<T>;
+    get ArrayType(): T['ArrayType'];
+    protected static [Symbol.toStringTag]: string;
+}
+/** @ignore */
+export interface Struct<T extends TypeMap = any> extends DataType<Type.Struct, T> {
+    TArray: Array<StructRowProxy<T>>;
+    TValue: StructRowProxy<T>;
+    dataTypes: T;
+}
+/** @ignore */
+export declare class Struct<T extends TypeMap = any> extends DataType<Type.Struct, T> {
+    _row: StructRow<T>;
+    readonly children: Field<T[keyof T]>[];
+    constructor(children: Field<T[keyof T]>[]);
+    get typeId(): Type.Struct;
+    toString(): string;
+    protected static [Symbol.toStringTag]: string;
+}
+/** @ignore */
+declare type Unions = Type.Union | Type.DenseUnion | Type.SparseUnion;
+/** @ignore */
+interface Union_<T extends Unions = Unions> extends DataType<T> {
+    TArray: Int8Array;
+    TValue: any;
+    ArrayType: TypedArrayConstructor<Int8Array>;
+}
+/** @ignore */
+declare class Union_<T extends Unions = Unions> extends DataType<T> {
+    readonly mode: UnionMode;
+    readonly typeIds: Int32Array;
+    readonly children: Field<any>[];
+    readonly typeIdToChildIndex: {
+        [key: number]: number;
+    };
+    constructor(mode: UnionMode, typeIds: number[] | Int32Array, children: Field<any>[]);
+    get typeId(): T;
+    toString(): string;
+    protected static [Symbol.toStringTag]: string;
+}
+export { Union_ as Union };
+/** @ignore */
+export declare class DenseUnion extends Union_<Type.DenseUnion> {
+    constructor(typeIds: number[] | Int32Array, children: Field[]);
+}
+/** @ignore */
+export declare class SparseUnion extends Union_<Type.SparseUnion> {
+    constructor(typeIds: number[] | Int32Array, children: Field[]);
+}
+/** @ignore */
+export interface FixedSizeBinary extends DataType<Type.FixedSizeBinary> {
+    TArray: Uint8Array;
+    TValue: Uint8Array;
+    ArrayType: TypedArrayConstructor<Uint8Array>;
+}
+/** @ignore */
+export declare class FixedSizeBinary extends DataType<Type.FixedSizeBinary> {
+    readonly byteWidth: number;
+    constructor(byteWidth: number);
+    get typeId(): Type.FixedSizeBinary;
+    toString(): string;
+    protected static [Symbol.toStringTag]: string;
+}
+/** @ignore */
+export interface FixedSizeList<T extends DataType = any> extends DataType<Type.FixedSizeList, {
+    [0]: T;
+}> {
+    TArray: Array<T['TArray']>;
+    TValue: Vector<T>;
+}
+/** @ignore */
+export declare class FixedSizeList<T extends DataType = any> extends DataType<Type.FixedSizeList, {
+    [0]: T;
+}> {
+    readonly listSize: number;
+    readonly children: Field<T>[];
+    constructor(listSize: number, child: Field<T>);
+    get typeId(): Type.FixedSizeList;
+    get valueType(): T;
+    get valueField(): Field<T>;
+    get ArrayType(): T['ArrayType'];
+    toString(): string;
+    protected static [Symbol.toStringTag]: string;
+}
+/** @ignore */
+export interface Map_<TKey extends DataType = any, TValue extends DataType = any> extends DataType<Type.Map, {
+    [0]: Struct<{
+        key: TKey;
+        value: TValue;
+    }>;
+}> {
+    TArray: Array<Map<TKey['TValue'], TValue['TValue'] | null>>;
+    TChild: Struct<{
+        key: TKey;
+        value: TValue;
+    }>;
+    TValue: MapRow<TKey, TValue>;
+}
+/** @ignore */
+export declare class Map_<TKey extends DataType = any, TValue extends DataType = any> extends DataType<Type.Map, {
+    [0]: Struct<{
+        key: TKey;
+        value: TValue;
+    }>;
+}> {
+    constructor(child: Field<Struct<{
+        key: TKey;
+        value: TValue;
+    }>>, keysSorted?: boolean);
+    readonly keysSorted: boolean;
+    readonly children: Field<Struct<{
+        key: TKey;
+        value: TValue;
+    }>>[];
+    get typeId(): Type.Map;
+    get keyType(): TKey;
+    get valueType(): TValue;
+    get childType(): Struct<{
+        key: TKey;
+        value: TValue;
+    }>;
+    toString(): string;
+    protected static [Symbol.toStringTag]: string;
+}
+/** @ignore */
+export declare type TKeys = Int8 | Int16 | Int32 | Uint8 | Uint16 | Uint32;
+/** @ignore */
+export interface Dictionary<T extends DataType = any, TKey extends TKeys = TKeys> extends DataType<Type.Dictionary> {
+    TArray: TKey['TArray'];
+    TValue: T['TValue'];
+}
+/** @ignore */
+export declare class Dictionary<T extends DataType = any, TKey extends TKeys = TKeys> extends DataType<Type.Dictionary> {
+    readonly id: number;
+    readonly indices: TKey;
+    readonly dictionary: T;
+    readonly isOrdered: boolean;
+    constructor(dictionary: T, indices: TKey, id?: Long | number | null, isOrdered?: boolean | null);
+    get typeId(): Type.Dictionary;
+    get children(): Field<any>[];
+    get valueType(): T;
+    get ArrayType(): T['ArrayType'];
+    toString(): string;
+    protected static [Symbol.toStringTag]: string;
+}
+/** @ignore */
+export declare type FloatArray = Uint16Array | Float32Array | Float64Array;
+/** @ignore */
+export declare type IntArray = Int8Array | Int16Array | Int32Array | Uint8Array | Uint16Array | Uint32Array;
+/** @ignore */
+export declare function strideForType(type: DataType): number;
+/** @ignore */
+export declare type TypeMap = Record<string | number | symbol, DataType>;
diff --git a/igv_component/node_modules/apache-arrow/type.d.ts.map b/igv_component/node_modules/apache-arrow/type.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..d82b25cfd21cd33858be7cfd3284556cf64f5185
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/type.d.ts.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/type.js b/igv_component/node_modules/apache-arrow/type.js
new file mode 100644
index 0000000000000000000000000000000000000000..ead4607e829d5f36d7b16d9b20888ea7dec7b873
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/type.js
@@ -0,0 +1,555 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+var _a, _b, _c, _d, _e, _f, _g, _h, _j, _k, _l, _m, _o, _p, _q, _r, _s, _t, _u;
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.strideForType = exports.Dictionary = exports.Map_ = exports.FixedSizeList = exports.FixedSizeBinary = exports.SparseUnion = exports.DenseUnion = exports.Union = exports.Struct = exports.List = exports.IntervalYearMonth = exports.IntervalDayTime = exports.Interval = exports.TimestampNanosecond = exports.TimestampMicrosecond = exports.TimestampMillisecond = exports.TimestampSecond = exports.Timestamp = exports.TimeNanosecond = exports.TimeMicrosecond = exports.TimeMillisecond = exports.TimeSecond = exports.Time = exports.DateMillisecond = exports.DateDay = exports.Date_ = exports.Decimal = exports.Bool = exports.Utf8 = exports.Binary = exports.Float64 = exports.Float32 = exports.Float16 = exports.Float = exports.Uint64 = exports.Uint32 = exports.Uint16 = exports.Uint8 = exports.Int64 = exports.Int32 = exports.Int16 = exports.Int8 = exports.Int = exports.Null = exports.DataType = void 0;
+const compat_js_1 = require("./util/compat.js");
+const enum_js_1 = require("./enum.js");
+/**
+ * An abstract base class for classes that encapsulate metadata about each of
+ * the logical types that Arrow can represent.
+ */
+class DataType {
+    /** @nocollapse */ static isNull(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.Null; }
+    /** @nocollapse */ static isInt(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.Int; }
+    /** @nocollapse */ static isFloat(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.Float; }
+    /** @nocollapse */ static isBinary(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.Binary; }
+    /** @nocollapse */ static isUtf8(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.Utf8; }
+    /** @nocollapse */ static isBool(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.Bool; }
+    /** @nocollapse */ static isDecimal(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.Decimal; }
+    /** @nocollapse */ static isDate(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.Date; }
+    /** @nocollapse */ static isTime(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.Time; }
+    /** @nocollapse */ static isTimestamp(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.Timestamp; }
+    /** @nocollapse */ static isInterval(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.Interval; }
+    /** @nocollapse */ static isList(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.List; }
+    /** @nocollapse */ static isStruct(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.Struct; }
+    /** @nocollapse */ static isUnion(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.Union; }
+    /** @nocollapse */ static isFixedSizeBinary(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.FixedSizeBinary; }
+    /** @nocollapse */ static isFixedSizeList(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.FixedSizeList; }
+    /** @nocollapse */ static isMap(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.Map; }
+    /** @nocollapse */ static isDictionary(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === enum_js_1.Type.Dictionary; }
+    /** @nocollapse */ static isDenseUnion(x) { return DataType.isUnion(x) && x.mode === enum_js_1.UnionMode.Dense; }
+    /** @nocollapse */ static isSparseUnion(x) { return DataType.isUnion(x) && x.mode === enum_js_1.UnionMode.Sparse; }
+    get typeId() { return enum_js_1.Type.NONE; }
+}
+exports.DataType = DataType;
+_a = Symbol.toStringTag;
+DataType[_a] = ((proto) => {
+    proto.children = null;
+    proto.ArrayType = Array;
+    return proto[Symbol.toStringTag] = 'DataType';
+})(DataType.prototype);
+/** @ignore */
+class Null extends DataType {
+    toString() { return `Null`; }
+    get typeId() { return enum_js_1.Type.Null; }
+}
+exports.Null = Null;
+_b = Symbol.toStringTag;
+Null[_b] = ((proto) => proto[Symbol.toStringTag] = 'Null')(Null.prototype);
+/** @ignore */
+class Int_ extends DataType {
+    constructor(isSigned, bitWidth) {
+        super();
+        this.isSigned = isSigned;
+        this.bitWidth = bitWidth;
+    }
+    get typeId() { return enum_js_1.Type.Int; }
+    get ArrayType() {
+        switch (this.bitWidth) {
+            case 8: return this.isSigned ? Int8Array : Uint8Array;
+            case 16: return this.isSigned ? Int16Array : Uint16Array;
+            case 32: return this.isSigned ? Int32Array : Uint32Array;
+            case 64: return this.isSigned ? compat_js_1.BigInt64Array : compat_js_1.BigUint64Array;
+        }
+        throw new Error(`Unrecognized ${this[Symbol.toStringTag]} type`);
+    }
+    toString() { return `${this.isSigned ? `I` : `Ui`}nt${this.bitWidth}`; }
+}
+exports.Int = Int_;
+_c = Symbol.toStringTag;
+Int_[_c] = ((proto) => {
+    proto.isSigned = null;
+    proto.bitWidth = null;
+    return proto[Symbol.toStringTag] = 'Int';
+})(Int_.prototype);
+/** @ignore */
+class Int8 extends Int_ {
+    constructor() { super(true, 8); }
+    get ArrayType() { return Int8Array; }
+}
+exports.Int8 = Int8;
+/** @ignore */
+class Int16 extends Int_ {
+    constructor() { super(true, 16); }
+    get ArrayType() { return Int16Array; }
+}
+exports.Int16 = Int16;
+/** @ignore */
+class Int32 extends Int_ {
+    constructor() { super(true, 32); }
+    get ArrayType() { return Int32Array; }
+}
+exports.Int32 = Int32;
+/** @ignore */
+class Int64 extends Int_ {
+    constructor() { super(true, 64); }
+    get ArrayType() { return compat_js_1.BigInt64Array; }
+}
+exports.Int64 = Int64;
+/** @ignore */
+class Uint8 extends Int_ {
+    constructor() { super(false, 8); }
+    get ArrayType() { return Uint8Array; }
+}
+exports.Uint8 = Uint8;
+/** @ignore */
+class Uint16 extends Int_ {
+    constructor() { super(false, 16); }
+    get ArrayType() { return Uint16Array; }
+}
+exports.Uint16 = Uint16;
+/** @ignore */
+class Uint32 extends Int_ {
+    constructor() { super(false, 32); }
+    get ArrayType() { return Uint32Array; }
+}
+exports.Uint32 = Uint32;
+/** @ignore */
+class Uint64 extends Int_ {
+    constructor() { super(false, 64); }
+    get ArrayType() { return compat_js_1.BigUint64Array; }
+}
+exports.Uint64 = Uint64;
+Object.defineProperty(Int8.prototype, 'ArrayType', { value: Int8Array });
+Object.defineProperty(Int16.prototype, 'ArrayType', { value: Int16Array });
+Object.defineProperty(Int32.prototype, 'ArrayType', { value: Int32Array });
+Object.defineProperty(Int64.prototype, 'ArrayType', { value: compat_js_1.BigInt64Array });
+Object.defineProperty(Uint8.prototype, 'ArrayType', { value: Uint8Array });
+Object.defineProperty(Uint16.prototype, 'ArrayType', { value: Uint16Array });
+Object.defineProperty(Uint32.prototype, 'ArrayType', { value: Uint32Array });
+Object.defineProperty(Uint64.prototype, 'ArrayType', { value: compat_js_1.BigUint64Array });
+/** @ignore */
+class Float extends DataType {
+    constructor(precision) {
+        super();
+        this.precision = precision;
+    }
+    get typeId() { return enum_js_1.Type.Float; }
+    get ArrayType() {
+        switch (this.precision) {
+            case enum_js_1.Precision.HALF: return Uint16Array;
+            case enum_js_1.Precision.SINGLE: return Float32Array;
+            case enum_js_1.Precision.DOUBLE: return Float64Array;
+        }
+        // @ts-ignore
+        throw new Error(`Unrecognized ${this[Symbol.toStringTag]} type`);
+    }
+    toString() { return `Float${(this.precision << 5) || 16}`; }
+}
+exports.Float = Float;
+_d = Symbol.toStringTag;
+Float[_d] = ((proto) => {
+    proto.precision = null;
+    return proto[Symbol.toStringTag] = 'Float';
+})(Float.prototype);
+/** @ignore */
+class Float16 extends Float {
+    constructor() { super(enum_js_1.Precision.HALF); }
+}
+exports.Float16 = Float16;
+/** @ignore */
+class Float32 extends Float {
+    constructor() { super(enum_js_1.Precision.SINGLE); }
+}
+exports.Float32 = Float32;
+/** @ignore */
+class Float64 extends Float {
+    constructor() { super(enum_js_1.Precision.DOUBLE); }
+}
+exports.Float64 = Float64;
+Object.defineProperty(Float16.prototype, 'ArrayType', { value: Uint16Array });
+Object.defineProperty(Float32.prototype, 'ArrayType', { value: Float32Array });
+Object.defineProperty(Float64.prototype, 'ArrayType', { value: Float64Array });
+/** @ignore */
+class Binary extends DataType {
+    constructor() {
+        super();
+    }
+    get typeId() { return enum_js_1.Type.Binary; }
+    toString() { return `Binary`; }
+}
+exports.Binary = Binary;
+_e = Symbol.toStringTag;
+Binary[_e] = ((proto) => {
+    proto.ArrayType = Uint8Array;
+    return proto[Symbol.toStringTag] = 'Binary';
+})(Binary.prototype);
+/** @ignore */
+class Utf8 extends DataType {
+    constructor() {
+        super();
+    }
+    get typeId() { return enum_js_1.Type.Utf8; }
+    toString() { return `Utf8`; }
+}
+exports.Utf8 = Utf8;
+_f = Symbol.toStringTag;
+Utf8[_f] = ((proto) => {
+    proto.ArrayType = Uint8Array;
+    return proto[Symbol.toStringTag] = 'Utf8';
+})(Utf8.prototype);
+/** @ignore */
+class Bool extends DataType {
+    constructor() {
+        super();
+    }
+    get typeId() { return enum_js_1.Type.Bool; }
+    toString() { return `Bool`; }
+}
+exports.Bool = Bool;
+_g = Symbol.toStringTag;
+Bool[_g] = ((proto) => {
+    proto.ArrayType = Uint8Array;
+    return proto[Symbol.toStringTag] = 'Bool';
+})(Bool.prototype);
+/** @ignore */
+class Decimal extends DataType {
+    constructor(scale, precision, bitWidth = 128) {
+        super();
+        this.scale = scale;
+        this.precision = precision;
+        this.bitWidth = bitWidth;
+    }
+    get typeId() { return enum_js_1.Type.Decimal; }
+    toString() { return `Decimal[${this.precision}e${this.scale > 0 ? `+` : ``}${this.scale}]`; }
+}
+exports.Decimal = Decimal;
+_h = Symbol.toStringTag;
+Decimal[_h] = ((proto) => {
+    proto.scale = null;
+    proto.precision = null;
+    proto.ArrayType = Uint32Array;
+    return proto[Symbol.toStringTag] = 'Decimal';
+})(Decimal.prototype);
+/** @ignore */
+class Date_ extends DataType {
+    constructor(unit) {
+        super();
+        this.unit = unit;
+    }
+    get typeId() { return enum_js_1.Type.Date; }
+    toString() { return `Date${(this.unit + 1) * 32}<${enum_js_1.DateUnit[this.unit]}>`; }
+}
+exports.Date_ = Date_;
+_j = Symbol.toStringTag;
+Date_[_j] = ((proto) => {
+    proto.unit = null;
+    proto.ArrayType = Int32Array;
+    return proto[Symbol.toStringTag] = 'Date';
+})(Date_.prototype);
+/** @ignore */
+class DateDay extends Date_ {
+    constructor() { super(enum_js_1.DateUnit.DAY); }
+}
+exports.DateDay = DateDay;
+/** @ignore */
+class DateMillisecond extends Date_ {
+    constructor() { super(enum_js_1.DateUnit.MILLISECOND); }
+}
+exports.DateMillisecond = DateMillisecond;
+/** @ignore */
+class Time_ extends DataType {
+    constructor(unit, bitWidth) {
+        super();
+        this.unit = unit;
+        this.bitWidth = bitWidth;
+    }
+    get typeId() { return enum_js_1.Type.Time; }
+    toString() { return `Time${this.bitWidth}<${enum_js_1.TimeUnit[this.unit]}>`; }
+    get ArrayType() {
+        switch (this.bitWidth) {
+            case 32: return Int32Array;
+            case 64: return compat_js_1.BigInt64Array;
+        }
+        // @ts-ignore
+        throw new Error(`Unrecognized ${this[Symbol.toStringTag]} type`);
+    }
+}
+exports.Time = Time_;
+_k = Symbol.toStringTag;
+Time_[_k] = ((proto) => {
+    proto.unit = null;
+    proto.bitWidth = null;
+    return proto[Symbol.toStringTag] = 'Time';
+})(Time_.prototype);
+/** @ignore */
+class TimeSecond extends Time_ {
+    constructor() { super(enum_js_1.TimeUnit.SECOND, 32); }
+}
+exports.TimeSecond = TimeSecond;
+/** @ignore */
+class TimeMillisecond extends Time_ {
+    constructor() { super(enum_js_1.TimeUnit.MILLISECOND, 32); }
+}
+exports.TimeMillisecond = TimeMillisecond;
+/** @ignore */
+class TimeMicrosecond extends Time_ {
+    constructor() { super(enum_js_1.TimeUnit.MICROSECOND, 64); }
+}
+exports.TimeMicrosecond = TimeMicrosecond;
+/** @ignore */
+class TimeNanosecond extends Time_ {
+    constructor() { super(enum_js_1.TimeUnit.NANOSECOND, 64); }
+}
+exports.TimeNanosecond = TimeNanosecond;
+/** @ignore */
+class Timestamp_ extends DataType {
+    constructor(unit, timezone) {
+        super();
+        this.unit = unit;
+        this.timezone = timezone;
+    }
+    get typeId() { return enum_js_1.Type.Timestamp; }
+    toString() { return `Timestamp<${enum_js_1.TimeUnit[this.unit]}${this.timezone ? `, ${this.timezone}` : ``}>`; }
+}
+exports.Timestamp = Timestamp_;
+_l = Symbol.toStringTag;
+Timestamp_[_l] = ((proto) => {
+    proto.unit = null;
+    proto.timezone = null;
+    proto.ArrayType = Int32Array;
+    return proto[Symbol.toStringTag] = 'Timestamp';
+})(Timestamp_.prototype);
+/** @ignore */
+class TimestampSecond extends Timestamp_ {
+    constructor(timezone) { super(enum_js_1.TimeUnit.SECOND, timezone); }
+}
+exports.TimestampSecond = TimestampSecond;
+/** @ignore */
+class TimestampMillisecond extends Timestamp_ {
+    constructor(timezone) { super(enum_js_1.TimeUnit.MILLISECOND, timezone); }
+}
+exports.TimestampMillisecond = TimestampMillisecond;
+/** @ignore */
+class TimestampMicrosecond extends Timestamp_ {
+    constructor(timezone) { super(enum_js_1.TimeUnit.MICROSECOND, timezone); }
+}
+exports.TimestampMicrosecond = TimestampMicrosecond;
+/** @ignore */
+class TimestampNanosecond extends Timestamp_ {
+    constructor(timezone) { super(enum_js_1.TimeUnit.NANOSECOND, timezone); }
+}
+exports.TimestampNanosecond = TimestampNanosecond;
+/** @ignore */
+class Interval_ extends DataType {
+    constructor(unit) {
+        super();
+        this.unit = unit;
+    }
+    get typeId() { return enum_js_1.Type.Interval; }
+    toString() { return `Interval<${enum_js_1.IntervalUnit[this.unit]}>`; }
+}
+exports.Interval = Interval_;
+_m = Symbol.toStringTag;
+Interval_[_m] = ((proto) => {
+    proto.unit = null;
+    proto.ArrayType = Int32Array;
+    return proto[Symbol.toStringTag] = 'Interval';
+})(Interval_.prototype);
+/** @ignore */
+class IntervalDayTime extends Interval_ {
+    constructor() { super(enum_js_1.IntervalUnit.DAY_TIME); }
+}
+exports.IntervalDayTime = IntervalDayTime;
+/** @ignore */
+class IntervalYearMonth extends Interval_ {
+    constructor() { super(enum_js_1.IntervalUnit.YEAR_MONTH); }
+}
+exports.IntervalYearMonth = IntervalYearMonth;
+/** @ignore */
+class List extends DataType {
+    constructor(child) {
+        super();
+        this.children = [child];
+    }
+    get typeId() { return enum_js_1.Type.List; }
+    toString() { return `List<${this.valueType}>`; }
+    get valueType() { return this.children[0].type; }
+    get valueField() { return this.children[0]; }
+    get ArrayType() { return this.valueType.ArrayType; }
+}
+exports.List = List;
+_o = Symbol.toStringTag;
+List[_o] = ((proto) => {
+    proto.children = null;
+    return proto[Symbol.toStringTag] = 'List';
+})(List.prototype);
+/** @ignore */
+class Struct extends DataType {
+    constructor(children) {
+        super();
+        this.children = children;
+    }
+    get typeId() { return enum_js_1.Type.Struct; }
+    toString() { return `Struct<{${this.children.map((f) => `${f.name}:${f.type}`).join(`, `)}}>`; }
+}
+exports.Struct = Struct;
+_p = Symbol.toStringTag;
+Struct[_p] = ((proto) => {
+    proto.children = null;
+    return proto[Symbol.toStringTag] = 'Struct';
+})(Struct.prototype);
+/** @ignore */
+class Union_ extends DataType {
+    constructor(mode, typeIds, children) {
+        super();
+        this.mode = mode;
+        this.children = children;
+        this.typeIds = typeIds = Int32Array.from(typeIds);
+        this.typeIdToChildIndex = typeIds.reduce((typeIdToChildIndex, typeId, idx) => (typeIdToChildIndex[typeId] = idx) && typeIdToChildIndex || typeIdToChildIndex, Object.create(null));
+    }
+    get typeId() { return enum_js_1.Type.Union; }
+    toString() {
+        return `${this[Symbol.toStringTag]}<${this.children.map((x) => `${x.type}`).join(` | `)}>`;
+    }
+}
+exports.Union = Union_;
+_q = Symbol.toStringTag;
+Union_[_q] = ((proto) => {
+    proto.mode = null;
+    proto.typeIds = null;
+    proto.children = null;
+    proto.typeIdToChildIndex = null;
+    proto.ArrayType = Int8Array;
+    return proto[Symbol.toStringTag] = 'Union';
+})(Union_.prototype);
+/** @ignore */
+class DenseUnion extends Union_ {
+    constructor(typeIds, children) {
+        super(enum_js_1.UnionMode.Dense, typeIds, children);
+    }
+}
+exports.DenseUnion = DenseUnion;
+/** @ignore */
+class SparseUnion extends Union_ {
+    constructor(typeIds, children) {
+        super(enum_js_1.UnionMode.Sparse, typeIds, children);
+    }
+}
+exports.SparseUnion = SparseUnion;
+/** @ignore */
+class FixedSizeBinary extends DataType {
+    constructor(byteWidth) {
+        super();
+        this.byteWidth = byteWidth;
+    }
+    get typeId() { return enum_js_1.Type.FixedSizeBinary; }
+    toString() { return `FixedSizeBinary[${this.byteWidth}]`; }
+}
+exports.FixedSizeBinary = FixedSizeBinary;
+_r = Symbol.toStringTag;
+FixedSizeBinary[_r] = ((proto) => {
+    proto.byteWidth = null;
+    proto.ArrayType = Uint8Array;
+    return proto[Symbol.toStringTag] = 'FixedSizeBinary';
+})(FixedSizeBinary.prototype);
+/** @ignore */
+class FixedSizeList extends DataType {
+    constructor(listSize, child) {
+        super();
+        this.listSize = listSize;
+        this.children = [child];
+    }
+    get typeId() { return enum_js_1.Type.FixedSizeList; }
+    get valueType() { return this.children[0].type; }
+    get valueField() { return this.children[0]; }
+    get ArrayType() { return this.valueType.ArrayType; }
+    toString() { return `FixedSizeList[${this.listSize}]<${this.valueType}>`; }
+}
+exports.FixedSizeList = FixedSizeList;
+_s = Symbol.toStringTag;
+FixedSizeList[_s] = ((proto) => {
+    proto.children = null;
+    proto.listSize = null;
+    return proto[Symbol.toStringTag] = 'FixedSizeList';
+})(FixedSizeList.prototype);
+/** @ignore */
+class Map_ extends DataType {
+    constructor(child, keysSorted = false) {
+        super();
+        this.children = [child];
+        this.keysSorted = keysSorted;
+    }
+    get typeId() { return enum_js_1.Type.Map; }
+    get keyType() { return this.children[0].type.children[0].type; }
+    get valueType() { return this.children[0].type.children[1].type; }
+    get childType() { return this.children[0].type; }
+    toString() { return `Map<{${this.children[0].type.children.map((f) => `${f.name}:${f.type}`).join(`, `)}}>`; }
+}
+exports.Map_ = Map_;
+_t = Symbol.toStringTag;
+Map_[_t] = ((proto) => {
+    proto.children = null;
+    proto.keysSorted = null;
+    return proto[Symbol.toStringTag] = 'Map_';
+})(Map_.prototype);
+/** @ignore */
+const getId = ((atomicDictionaryId) => () => ++atomicDictionaryId)(-1);
+/** @ignore */
+class Dictionary extends DataType {
+    constructor(dictionary, indices, id, isOrdered) {
+        super();
+        this.indices = indices;
+        this.dictionary = dictionary;
+        this.isOrdered = isOrdered || false;
+        this.id = id == null ? getId() : (typeof id === 'number' ? id : id.low);
+    }
+    get typeId() { return enum_js_1.Type.Dictionary; }
+    get children() { return this.dictionary.children; }
+    get valueType() { return this.dictionary; }
+    get ArrayType() { return this.dictionary.ArrayType; }
+    toString() { return `Dictionary<${this.indices}, ${this.dictionary}>`; }
+}
+exports.Dictionary = Dictionary;
+_u = Symbol.toStringTag;
+Dictionary[_u] = ((proto) => {
+    proto.id = null;
+    proto.indices = null;
+    proto.isOrdered = null;
+    proto.dictionary = null;
+    return proto[Symbol.toStringTag] = 'Dictionary';
+})(Dictionary.prototype);
+/** @ignore */
+function strideForType(type) {
+    const t = type;
+    switch (type.typeId) {
+        case enum_js_1.Type.Decimal: return type.bitWidth / 32;
+        case enum_js_1.Type.Timestamp: return 2;
+        case enum_js_1.Type.Date: return 1 + t.unit;
+        case enum_js_1.Type.Interval: return 1 + t.unit;
+        // case Type.Int: return 1 + +((t as Int_).bitWidth > 32);
+        // case Type.Time: return 1 + +((t as Time_).bitWidth > 32);
+        case enum_js_1.Type.FixedSizeList: return t.listSize;
+        case enum_js_1.Type.FixedSizeBinary: return t.byteWidth;
+        default: return 1;
+    }
+}
+exports.strideForType = strideForType;
+
+//# sourceMappingURL=type.js.map
diff --git a/igv_component/node_modules/apache-arrow/type.js.map b/igv_component/node_modules/apache-arrow/type.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..b4b4df7af42c6e398f7271e4c90c380fbf4bc71e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/type.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/type.mjs b/igv_component/node_modules/apache-arrow/type.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..86f06e3193b919c13523df72bcf056be39d8a77d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/type.mjs
@@ -0,0 +1,512 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+var _a, _b, _c, _d, _e, _f, _g, _h, _j, _k, _l, _m, _o, _p, _q, _r, _s, _t, _u;
+import { BigInt64Array, BigUint64Array } from './util/compat.mjs';
+import { Type, Precision, UnionMode, DateUnit, TimeUnit, IntervalUnit } from './enum.mjs';
+/**
+ * An abstract base class for classes that encapsulate metadata about each of
+ * the logical types that Arrow can represent.
+ */
+export class DataType {
+    /** @nocollapse */ static isNull(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.Null; }
+    /** @nocollapse */ static isInt(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.Int; }
+    /** @nocollapse */ static isFloat(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.Float; }
+    /** @nocollapse */ static isBinary(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.Binary; }
+    /** @nocollapse */ static isUtf8(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.Utf8; }
+    /** @nocollapse */ static isBool(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.Bool; }
+    /** @nocollapse */ static isDecimal(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.Decimal; }
+    /** @nocollapse */ static isDate(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.Date; }
+    /** @nocollapse */ static isTime(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.Time; }
+    /** @nocollapse */ static isTimestamp(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.Timestamp; }
+    /** @nocollapse */ static isInterval(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.Interval; }
+    /** @nocollapse */ static isList(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.List; }
+    /** @nocollapse */ static isStruct(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.Struct; }
+    /** @nocollapse */ static isUnion(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.Union; }
+    /** @nocollapse */ static isFixedSizeBinary(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.FixedSizeBinary; }
+    /** @nocollapse */ static isFixedSizeList(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.FixedSizeList; }
+    /** @nocollapse */ static isMap(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.Map; }
+    /** @nocollapse */ static isDictionary(x) { return (x === null || x === void 0 ? void 0 : x.typeId) === Type.Dictionary; }
+    /** @nocollapse */ static isDenseUnion(x) { return DataType.isUnion(x) && x.mode === UnionMode.Dense; }
+    /** @nocollapse */ static isSparseUnion(x) { return DataType.isUnion(x) && x.mode === UnionMode.Sparse; }
+    get typeId() { return Type.NONE; }
+}
+_a = Symbol.toStringTag;
+DataType[_a] = ((proto) => {
+    proto.children = null;
+    proto.ArrayType = Array;
+    return proto[Symbol.toStringTag] = 'DataType';
+})(DataType.prototype);
+/** @ignore */
+export class Null extends DataType {
+    toString() { return `Null`; }
+    get typeId() { return Type.Null; }
+}
+_b = Symbol.toStringTag;
+Null[_b] = ((proto) => proto[Symbol.toStringTag] = 'Null')(Null.prototype);
+/** @ignore */
+class Int_ extends DataType {
+    constructor(isSigned, bitWidth) {
+        super();
+        this.isSigned = isSigned;
+        this.bitWidth = bitWidth;
+    }
+    get typeId() { return Type.Int; }
+    get ArrayType() {
+        switch (this.bitWidth) {
+            case 8: return this.isSigned ? Int8Array : Uint8Array;
+            case 16: return this.isSigned ? Int16Array : Uint16Array;
+            case 32: return this.isSigned ? Int32Array : Uint32Array;
+            case 64: return this.isSigned ? BigInt64Array : BigUint64Array;
+        }
+        throw new Error(`Unrecognized ${this[Symbol.toStringTag]} type`);
+    }
+    toString() { return `${this.isSigned ? `I` : `Ui`}nt${this.bitWidth}`; }
+}
+_c = Symbol.toStringTag;
+Int_[_c] = ((proto) => {
+    proto.isSigned = null;
+    proto.bitWidth = null;
+    return proto[Symbol.toStringTag] = 'Int';
+})(Int_.prototype);
+export { Int_ as Int };
+/** @ignore */
+export class Int8 extends Int_ {
+    constructor() { super(true, 8); }
+    get ArrayType() { return Int8Array; }
+}
+/** @ignore */
+export class Int16 extends Int_ {
+    constructor() { super(true, 16); }
+    get ArrayType() { return Int16Array; }
+}
+/** @ignore */
+export class Int32 extends Int_ {
+    constructor() { super(true, 32); }
+    get ArrayType() { return Int32Array; }
+}
+/** @ignore */
+export class Int64 extends Int_ {
+    constructor() { super(true, 64); }
+    get ArrayType() { return BigInt64Array; }
+}
+/** @ignore */
+export class Uint8 extends Int_ {
+    constructor() { super(false, 8); }
+    get ArrayType() { return Uint8Array; }
+}
+/** @ignore */
+export class Uint16 extends Int_ {
+    constructor() { super(false, 16); }
+    get ArrayType() { return Uint16Array; }
+}
+/** @ignore */
+export class Uint32 extends Int_ {
+    constructor() { super(false, 32); }
+    get ArrayType() { return Uint32Array; }
+}
+/** @ignore */
+export class Uint64 extends Int_ {
+    constructor() { super(false, 64); }
+    get ArrayType() { return BigUint64Array; }
+}
+Object.defineProperty(Int8.prototype, 'ArrayType', { value: Int8Array });
+Object.defineProperty(Int16.prototype, 'ArrayType', { value: Int16Array });
+Object.defineProperty(Int32.prototype, 'ArrayType', { value: Int32Array });
+Object.defineProperty(Int64.prototype, 'ArrayType', { value: BigInt64Array });
+Object.defineProperty(Uint8.prototype, 'ArrayType', { value: Uint8Array });
+Object.defineProperty(Uint16.prototype, 'ArrayType', { value: Uint16Array });
+Object.defineProperty(Uint32.prototype, 'ArrayType', { value: Uint32Array });
+Object.defineProperty(Uint64.prototype, 'ArrayType', { value: BigUint64Array });
+/** @ignore */
+export class Float extends DataType {
+    constructor(precision) {
+        super();
+        this.precision = precision;
+    }
+    get typeId() { return Type.Float; }
+    get ArrayType() {
+        switch (this.precision) {
+            case Precision.HALF: return Uint16Array;
+            case Precision.SINGLE: return Float32Array;
+            case Precision.DOUBLE: return Float64Array;
+        }
+        // @ts-ignore
+        throw new Error(`Unrecognized ${this[Symbol.toStringTag]} type`);
+    }
+    toString() { return `Float${(this.precision << 5) || 16}`; }
+}
+_d = Symbol.toStringTag;
+Float[_d] = ((proto) => {
+    proto.precision = null;
+    return proto[Symbol.toStringTag] = 'Float';
+})(Float.prototype);
+/** @ignore */
+export class Float16 extends Float {
+    constructor() { super(Precision.HALF); }
+}
+/** @ignore */
+export class Float32 extends Float {
+    constructor() { super(Precision.SINGLE); }
+}
+/** @ignore */
+export class Float64 extends Float {
+    constructor() { super(Precision.DOUBLE); }
+}
+Object.defineProperty(Float16.prototype, 'ArrayType', { value: Uint16Array });
+Object.defineProperty(Float32.prototype, 'ArrayType', { value: Float32Array });
+Object.defineProperty(Float64.prototype, 'ArrayType', { value: Float64Array });
+/** @ignore */
+export class Binary extends DataType {
+    constructor() {
+        super();
+    }
+    get typeId() { return Type.Binary; }
+    toString() { return `Binary`; }
+}
+_e = Symbol.toStringTag;
+Binary[_e] = ((proto) => {
+    proto.ArrayType = Uint8Array;
+    return proto[Symbol.toStringTag] = 'Binary';
+})(Binary.prototype);
+/** @ignore */
+export class Utf8 extends DataType {
+    constructor() {
+        super();
+    }
+    get typeId() { return Type.Utf8; }
+    toString() { return `Utf8`; }
+}
+_f = Symbol.toStringTag;
+Utf8[_f] = ((proto) => {
+    proto.ArrayType = Uint8Array;
+    return proto[Symbol.toStringTag] = 'Utf8';
+})(Utf8.prototype);
+/** @ignore */
+export class Bool extends DataType {
+    constructor() {
+        super();
+    }
+    get typeId() { return Type.Bool; }
+    toString() { return `Bool`; }
+}
+_g = Symbol.toStringTag;
+Bool[_g] = ((proto) => {
+    proto.ArrayType = Uint8Array;
+    return proto[Symbol.toStringTag] = 'Bool';
+})(Bool.prototype);
+/** @ignore */
+export class Decimal extends DataType {
+    constructor(scale, precision, bitWidth = 128) {
+        super();
+        this.scale = scale;
+        this.precision = precision;
+        this.bitWidth = bitWidth;
+    }
+    get typeId() { return Type.Decimal; }
+    toString() { return `Decimal[${this.precision}e${this.scale > 0 ? `+` : ``}${this.scale}]`; }
+}
+_h = Symbol.toStringTag;
+Decimal[_h] = ((proto) => {
+    proto.scale = null;
+    proto.precision = null;
+    proto.ArrayType = Uint32Array;
+    return proto[Symbol.toStringTag] = 'Decimal';
+})(Decimal.prototype);
+/** @ignore */
+export class Date_ extends DataType {
+    constructor(unit) {
+        super();
+        this.unit = unit;
+    }
+    get typeId() { return Type.Date; }
+    toString() { return `Date${(this.unit + 1) * 32}<${DateUnit[this.unit]}>`; }
+}
+_j = Symbol.toStringTag;
+Date_[_j] = ((proto) => {
+    proto.unit = null;
+    proto.ArrayType = Int32Array;
+    return proto[Symbol.toStringTag] = 'Date';
+})(Date_.prototype);
+/** @ignore */
+export class DateDay extends Date_ {
+    constructor() { super(DateUnit.DAY); }
+}
+/** @ignore */
+export class DateMillisecond extends Date_ {
+    constructor() { super(DateUnit.MILLISECOND); }
+}
+/** @ignore */
+class Time_ extends DataType {
+    constructor(unit, bitWidth) {
+        super();
+        this.unit = unit;
+        this.bitWidth = bitWidth;
+    }
+    get typeId() { return Type.Time; }
+    toString() { return `Time${this.bitWidth}<${TimeUnit[this.unit]}>`; }
+    get ArrayType() {
+        switch (this.bitWidth) {
+            case 32: return Int32Array;
+            case 64: return BigInt64Array;
+        }
+        // @ts-ignore
+        throw new Error(`Unrecognized ${this[Symbol.toStringTag]} type`);
+    }
+}
+_k = Symbol.toStringTag;
+Time_[_k] = ((proto) => {
+    proto.unit = null;
+    proto.bitWidth = null;
+    return proto[Symbol.toStringTag] = 'Time';
+})(Time_.prototype);
+export { Time_ as Time };
+/** @ignore */
+export class TimeSecond extends Time_ {
+    constructor() { super(TimeUnit.SECOND, 32); }
+}
+/** @ignore */
+export class TimeMillisecond extends Time_ {
+    constructor() { super(TimeUnit.MILLISECOND, 32); }
+}
+/** @ignore */
+export class TimeMicrosecond extends Time_ {
+    constructor() { super(TimeUnit.MICROSECOND, 64); }
+}
+/** @ignore */
+export class TimeNanosecond extends Time_ {
+    constructor() { super(TimeUnit.NANOSECOND, 64); }
+}
+/** @ignore */
+class Timestamp_ extends DataType {
+    constructor(unit, timezone) {
+        super();
+        this.unit = unit;
+        this.timezone = timezone;
+    }
+    get typeId() { return Type.Timestamp; }
+    toString() { return `Timestamp<${TimeUnit[this.unit]}${this.timezone ? `, ${this.timezone}` : ``}>`; }
+}
+_l = Symbol.toStringTag;
+Timestamp_[_l] = ((proto) => {
+    proto.unit = null;
+    proto.timezone = null;
+    proto.ArrayType = Int32Array;
+    return proto[Symbol.toStringTag] = 'Timestamp';
+})(Timestamp_.prototype);
+export { Timestamp_ as Timestamp };
+/** @ignore */
+export class TimestampSecond extends Timestamp_ {
+    constructor(timezone) { super(TimeUnit.SECOND, timezone); }
+}
+/** @ignore */
+export class TimestampMillisecond extends Timestamp_ {
+    constructor(timezone) { super(TimeUnit.MILLISECOND, timezone); }
+}
+/** @ignore */
+export class TimestampMicrosecond extends Timestamp_ {
+    constructor(timezone) { super(TimeUnit.MICROSECOND, timezone); }
+}
+/** @ignore */
+export class TimestampNanosecond extends Timestamp_ {
+    constructor(timezone) { super(TimeUnit.NANOSECOND, timezone); }
+}
+/** @ignore */
+class Interval_ extends DataType {
+    constructor(unit) {
+        super();
+        this.unit = unit;
+    }
+    get typeId() { return Type.Interval; }
+    toString() { return `Interval<${IntervalUnit[this.unit]}>`; }
+}
+_m = Symbol.toStringTag;
+Interval_[_m] = ((proto) => {
+    proto.unit = null;
+    proto.ArrayType = Int32Array;
+    return proto[Symbol.toStringTag] = 'Interval';
+})(Interval_.prototype);
+export { Interval_ as Interval };
+/** @ignore */
+export class IntervalDayTime extends Interval_ {
+    constructor() { super(IntervalUnit.DAY_TIME); }
+}
+/** @ignore */
+export class IntervalYearMonth extends Interval_ {
+    constructor() { super(IntervalUnit.YEAR_MONTH); }
+}
+/** @ignore */
+export class List extends DataType {
+    constructor(child) {
+        super();
+        this.children = [child];
+    }
+    get typeId() { return Type.List; }
+    toString() { return `List<${this.valueType}>`; }
+    get valueType() { return this.children[0].type; }
+    get valueField() { return this.children[0]; }
+    get ArrayType() { return this.valueType.ArrayType; }
+}
+_o = Symbol.toStringTag;
+List[_o] = ((proto) => {
+    proto.children = null;
+    return proto[Symbol.toStringTag] = 'List';
+})(List.prototype);
+/** @ignore */
+export class Struct extends DataType {
+    constructor(children) {
+        super();
+        this.children = children;
+    }
+    get typeId() { return Type.Struct; }
+    toString() { return `Struct<{${this.children.map((f) => `${f.name}:${f.type}`).join(`, `)}}>`; }
+}
+_p = Symbol.toStringTag;
+Struct[_p] = ((proto) => {
+    proto.children = null;
+    return proto[Symbol.toStringTag] = 'Struct';
+})(Struct.prototype);
+/** @ignore */
+class Union_ extends DataType {
+    constructor(mode, typeIds, children) {
+        super();
+        this.mode = mode;
+        this.children = children;
+        this.typeIds = typeIds = Int32Array.from(typeIds);
+        this.typeIdToChildIndex = typeIds.reduce((typeIdToChildIndex, typeId, idx) => (typeIdToChildIndex[typeId] = idx) && typeIdToChildIndex || typeIdToChildIndex, Object.create(null));
+    }
+    get typeId() { return Type.Union; }
+    toString() {
+        return `${this[Symbol.toStringTag]}<${this.children.map((x) => `${x.type}`).join(` | `)}>`;
+    }
+}
+_q = Symbol.toStringTag;
+Union_[_q] = ((proto) => {
+    proto.mode = null;
+    proto.typeIds = null;
+    proto.children = null;
+    proto.typeIdToChildIndex = null;
+    proto.ArrayType = Int8Array;
+    return proto[Symbol.toStringTag] = 'Union';
+})(Union_.prototype);
+export { Union_ as Union };
+/** @ignore */
+export class DenseUnion extends Union_ {
+    constructor(typeIds, children) {
+        super(UnionMode.Dense, typeIds, children);
+    }
+}
+/** @ignore */
+export class SparseUnion extends Union_ {
+    constructor(typeIds, children) {
+        super(UnionMode.Sparse, typeIds, children);
+    }
+}
+/** @ignore */
+export class FixedSizeBinary extends DataType {
+    constructor(byteWidth) {
+        super();
+        this.byteWidth = byteWidth;
+    }
+    get typeId() { return Type.FixedSizeBinary; }
+    toString() { return `FixedSizeBinary[${this.byteWidth}]`; }
+}
+_r = Symbol.toStringTag;
+FixedSizeBinary[_r] = ((proto) => {
+    proto.byteWidth = null;
+    proto.ArrayType = Uint8Array;
+    return proto[Symbol.toStringTag] = 'FixedSizeBinary';
+})(FixedSizeBinary.prototype);
+/** @ignore */
+export class FixedSizeList extends DataType {
+    constructor(listSize, child) {
+        super();
+        this.listSize = listSize;
+        this.children = [child];
+    }
+    get typeId() { return Type.FixedSizeList; }
+    get valueType() { return this.children[0].type; }
+    get valueField() { return this.children[0]; }
+    get ArrayType() { return this.valueType.ArrayType; }
+    toString() { return `FixedSizeList[${this.listSize}]<${this.valueType}>`; }
+}
+_s = Symbol.toStringTag;
+FixedSizeList[_s] = ((proto) => {
+    proto.children = null;
+    proto.listSize = null;
+    return proto[Symbol.toStringTag] = 'FixedSizeList';
+})(FixedSizeList.prototype);
+/** @ignore */
+export class Map_ extends DataType {
+    constructor(child, keysSorted = false) {
+        super();
+        this.children = [child];
+        this.keysSorted = keysSorted;
+    }
+    get typeId() { return Type.Map; }
+    get keyType() { return this.children[0].type.children[0].type; }
+    get valueType() { return this.children[0].type.children[1].type; }
+    get childType() { return this.children[0].type; }
+    toString() { return `Map<{${this.children[0].type.children.map((f) => `${f.name}:${f.type}`).join(`, `)}}>`; }
+}
+_t = Symbol.toStringTag;
+Map_[_t] = ((proto) => {
+    proto.children = null;
+    proto.keysSorted = null;
+    return proto[Symbol.toStringTag] = 'Map_';
+})(Map_.prototype);
+/** @ignore */
+const getId = ((atomicDictionaryId) => () => ++atomicDictionaryId)(-1);
+/** @ignore */
+export class Dictionary extends DataType {
+    constructor(dictionary, indices, id, isOrdered) {
+        super();
+        this.indices = indices;
+        this.dictionary = dictionary;
+        this.isOrdered = isOrdered || false;
+        this.id = id == null ? getId() : (typeof id === 'number' ? id : id.low);
+    }
+    get typeId() { return Type.Dictionary; }
+    get children() { return this.dictionary.children; }
+    get valueType() { return this.dictionary; }
+    get ArrayType() { return this.dictionary.ArrayType; }
+    toString() { return `Dictionary<${this.indices}, ${this.dictionary}>`; }
+}
+_u = Symbol.toStringTag;
+Dictionary[_u] = ((proto) => {
+    proto.id = null;
+    proto.indices = null;
+    proto.isOrdered = null;
+    proto.dictionary = null;
+    return proto[Symbol.toStringTag] = 'Dictionary';
+})(Dictionary.prototype);
+/** @ignore */
+export function strideForType(type) {
+    const t = type;
+    switch (type.typeId) {
+        case Type.Decimal: return type.bitWidth / 32;
+        case Type.Timestamp: return 2;
+        case Type.Date: return 1 + t.unit;
+        case Type.Interval: return 1 + t.unit;
+        // case Type.Int: return 1 + +((t as Int_).bitWidth > 32);
+        // case Type.Time: return 1 + +((t as Time_).bitWidth > 32);
+        case Type.FixedSizeList: return t.listSize;
+        case Type.FixedSizeBinary: return t.byteWidth;
+        default: return 1;
+    }
+}
+
+//# sourceMappingURL=type.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/type.mjs.map b/igv_component/node_modules/apache-arrow/type.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..b8867042dc284e9781be10171e1916400f12bb68
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/type.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/bit.d.ts b/igv_component/node_modules/apache-arrow/util/bit.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..751119203f29be00f42b56dee182db44d4b2d1c4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/bit.d.ts
@@ -0,0 +1,36 @@
+/** @ignore */
+export declare function getBool(_data: any, _index: number, byte: number, bit: number): boolean;
+/** @ignore */
+export declare function getBit(_data: any, _index: number, byte: number, bit: number): 0 | 1;
+/** @ignore */
+export declare function setBool(bytes: Uint8Array, index: number, value: any): boolean;
+/** @ignore */
+export declare function truncateBitmap(offset: number, length: number, bitmap: Uint8Array): Uint8Array;
+/** @ignore */
+export declare function packBools(values: Iterable<any>): Uint8Array;
+/** @ignore */
+export declare class BitIterator<T> implements IterableIterator<T> {
+    private bytes;
+    private length;
+    private context;
+    private get;
+    bit: number;
+    byte: number;
+    byteIndex: number;
+    index: number;
+    constructor(bytes: Uint8Array, begin: number, length: number, context: any, get: (context: any, index: number, byte: number, bit: number) => T);
+    next(): IteratorResult<T>;
+    [Symbol.iterator](): this;
+}
+/**
+ * Compute the population count (the number of bits set to 1) for a range of bits in a Uint8Array.
+ * @param vector The Uint8Array of bits for which to compute the population count.
+ * @param lhs The range's left-hand side (or start) bit
+ * @param rhs The range's right-hand side (or end) bit
+ */
+/** @ignore */
+export declare function popcnt_bit_range(data: Uint8Array, lhs: number, rhs: number): number;
+/** @ignore */
+export declare function popcnt_array(arr: ArrayBufferView, byteOffset?: number, byteLength?: number): number;
+/** @ignore */
+export declare function popcnt_uint32(uint32: number): number;
diff --git a/igv_component/node_modules/apache-arrow/util/bit.d.ts.map b/igv_component/node_modules/apache-arrow/util/bit.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..0b4ded6aefeb0da1e130ab1e635bd99ddb0dc54d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/bit.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/bit.ts"],"names":[],"mappings":"AAiBA,cAAc;AACd,wBAAgB,OAAO,CAAC,KAAK,EAAE,GAAG,EAAE,MAAM,EAAE,MAAM,EAAE,IAAI,EAAE,MAAM,EAAE,GAAG,EAAE,MAAM,WAE5E;AAED,cAAc;AACd,wBAAgB,MAAM,CAAC,KAAK,EAAE,GAAG,EAAE,MAAM,EAAE,MAAM,EAAE,IAAI,EAAE,MAAM,EAAE,GAAG,EAAE,MAAM,GAAG,CAAC,GAAG,CAAC,CAEnF;AAED,cAAc;AACd,wBAAgB,OAAO,CAAC,KAAK,EAAE,UAAU,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,GAAG,WAInE;AAED,cAAc;AACd,wBAAgB,cAAc,CAAC,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,UAAU,cAWhF;AAED,cAAc;AACd,wBAAgB,SAAS,CAAC,MAAM,EAAE,QAAQ,CAAC,GAAG,CAAC,cAc9C;AAED,cAAc;AACd,qBAAa,WAAW,CAAC,CAAC,CAAE,YAAW,gBAAgB,CAAC,CAAC,CAAC;IAOlD,OAAO,CAAC,KAAK;IAEb,OAAO,CAAC,MAAM;IACd,OAAO,CAAC,OAAO;IACf,OAAO,CAAC,GAAG;IAVf,GAAG,EAAE,MAAM,CAAC;IACZ,IAAI,EAAE,MAAM,CAAC;IACb,SAAS,EAAE,MAAM,CAAC;IAClB,KAAK,EAAE,MAAM,CAAC;gBAGF,KAAK,EAAE,UAAU,EACzB,KAAK,EAAE,MAAM,EACL,MAAM,EAAE,MAAM,EACd,OAAO,EAAE,GAAG,EACZ,GAAG,EAAE,CAAC,OAAO,EAAE,GAAG,EAAE,KAAK,EAAE,MAAM,EAAE,IAAI,EAAE,MAAM,EAAE,GAAG,EAAE,MAAM,KAAK,CAAC;IAQ9E,IAAI,IAAI,cAAc,CAAC,CAAC,CAAC;IAazB,CAAC,MAAM,CAAC,QAAQ,CAAC;CAGpB;AAED;;;;;GAKG;AACH,cAAc;AACd,wBAAgB,gBAAgB,CAAC,IAAI,EAAE,UAAU,EAAE,GAAG,EAAE,MAAM,EAAE,GAAG,EAAE,MAAM,GAAG,MAAM,CAsBnF;AAED,cAAc;AACd,wBAAgB,YAAY,CAAC,GAAG,EAAE,eAAe,EAAE,UAAU,CAAC,EAAE,MAAM,EAAE,UAAU,CAAC,EAAE,MAAM,UAiB1F;AAED,cAAc;AACd,wBAAgB,aAAa,CAAC,MAAM,EAAE,MAAM,GAAG,MAAM,CAKpD","file":"bit.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/bit.js b/igv_component/node_modules/apache-arrow/util/bit.js
new file mode 100644
index 0000000000000000000000000000000000000000..1ee3e3597d14a5360aa82e8d01533b7073319de7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/bit.js
@@ -0,0 +1,160 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.popcnt_uint32 = exports.popcnt_array = exports.popcnt_bit_range = exports.BitIterator = exports.packBools = exports.truncateBitmap = exports.setBool = exports.getBit = exports.getBool = void 0;
+/** @ignore */
+function getBool(_data, _index, byte, bit) {
+    return (byte & 1 << bit) !== 0;
+}
+exports.getBool = getBool;
+/** @ignore */
+function getBit(_data, _index, byte, bit) {
+    return (byte & 1 << bit) >> bit;
+}
+exports.getBit = getBit;
+/** @ignore */
+function setBool(bytes, index, value) {
+    return value ?
+        !!(bytes[index >> 3] |= (1 << (index % 8))) || true :
+        !(bytes[index >> 3] &= ~(1 << (index % 8))) && false;
+}
+exports.setBool = setBool;
+/** @ignore */
+function truncateBitmap(offset, length, bitmap) {
+    const alignedSize = (bitmap.byteLength + 7) & ~7;
+    if (offset > 0 || bitmap.byteLength < alignedSize) {
+        const bytes = new Uint8Array(alignedSize);
+        // If the offset is a multiple of 8 bits, it's safe to slice the bitmap
+        bytes.set(offset % 8 === 0 ? bitmap.subarray(offset >> 3) :
+            // Otherwise iterate each bit from the offset and return a new one
+            packBools(new BitIterator(bitmap, offset, length, null, getBool)).subarray(0, alignedSize));
+        return bytes;
+    }
+    return bitmap;
+}
+exports.truncateBitmap = truncateBitmap;
+/** @ignore */
+function packBools(values) {
+    const xs = [];
+    let i = 0, bit = 0, byte = 0;
+    for (const value of values) {
+        value && (byte |= 1 << bit);
+        if (++bit === 8) {
+            xs[i++] = byte;
+            byte = bit = 0;
+        }
+    }
+    if (i === 0 || bit > 0) {
+        xs[i++] = byte;
+    }
+    const b = new Uint8Array((xs.length + 7) & ~7);
+    b.set(xs);
+    return b;
+}
+exports.packBools = packBools;
+/** @ignore */
+class BitIterator {
+    constructor(bytes, begin, length, context, get) {
+        this.bytes = bytes;
+        this.length = length;
+        this.context = context;
+        this.get = get;
+        this.bit = begin % 8;
+        this.byteIndex = begin >> 3;
+        this.byte = bytes[this.byteIndex++];
+        this.index = 0;
+    }
+    next() {
+        if (this.index < this.length) {
+            if (this.bit === 8) {
+                this.bit = 0;
+                this.byte = this.bytes[this.byteIndex++];
+            }
+            return {
+                value: this.get(this.context, this.index++, this.byte, this.bit++)
+            };
+        }
+        return { done: true, value: null };
+    }
+    [Symbol.iterator]() {
+        return this;
+    }
+}
+exports.BitIterator = BitIterator;
+/**
+ * Compute the population count (the number of bits set to 1) for a range of bits in a Uint8Array.
+ * @param vector The Uint8Array of bits for which to compute the population count.
+ * @param lhs The range's left-hand side (or start) bit
+ * @param rhs The range's right-hand side (or end) bit
+ */
+/** @ignore */
+function popcnt_bit_range(data, lhs, rhs) {
+    if (rhs - lhs <= 0) {
+        return 0;
+    }
+    // If the bit range is less than one byte, sum the 1 bits in the bit range
+    if (rhs - lhs < 8) {
+        let sum = 0;
+        for (const bit of new BitIterator(data, lhs, rhs - lhs, data, getBit)) {
+            sum += bit;
+        }
+        return sum;
+    }
+    // Get the next lowest multiple of 8 from the right hand side
+    const rhsInside = rhs >> 3 << 3;
+    // Get the next highest multiple of 8 from the left hand side
+    const lhsInside = lhs + (lhs % 8 === 0 ? 0 : 8 - lhs % 8);
+    return (
+    // Get the popcnt of bits between the left hand side, and the next highest multiple of 8
+    popcnt_bit_range(data, lhs, lhsInside) +
+        // Get the popcnt of bits between the right hand side, and the next lowest multiple of 8
+        popcnt_bit_range(data, rhsInside, rhs) +
+        // Get the popcnt of all bits between the left and right hand sides' multiples of 8
+        popcnt_array(data, lhsInside >> 3, (rhsInside - lhsInside) >> 3));
+}
+exports.popcnt_bit_range = popcnt_bit_range;
+/** @ignore */
+function popcnt_array(arr, byteOffset, byteLength) {
+    let cnt = 0, pos = Math.trunc(byteOffset);
+    const view = new DataView(arr.buffer, arr.byteOffset, arr.byteLength);
+    const len = byteLength === void 0 ? arr.byteLength : pos + byteLength;
+    while (len - pos >= 4) {
+        cnt += popcnt_uint32(view.getUint32(pos));
+        pos += 4;
+    }
+    while (len - pos >= 2) {
+        cnt += popcnt_uint32(view.getUint16(pos));
+        pos += 2;
+    }
+    while (len - pos >= 1) {
+        cnt += popcnt_uint32(view.getUint8(pos));
+        pos += 1;
+    }
+    return cnt;
+}
+exports.popcnt_array = popcnt_array;
+/** @ignore */
+function popcnt_uint32(uint32) {
+    let i = Math.trunc(uint32);
+    i = i - ((i >>> 1) & 0x55555555);
+    i = (i & 0x33333333) + ((i >>> 2) & 0x33333333);
+    return (((i + (i >>> 4)) & 0x0F0F0F0F) * 0x01010101) >>> 24;
+}
+exports.popcnt_uint32 = popcnt_uint32;
+
+//# sourceMappingURL=bit.js.map
diff --git a/igv_component/node_modules/apache-arrow/util/bit.js.map b/igv_component/node_modules/apache-arrow/util/bit.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..c89e70adc5391cb28ac80d53a5f1804e7d4c38c9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/bit.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/bit.mjs b/igv_component/node_modules/apache-arrow/util/bit.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..6e1a1d1dd31fb216757c536a17be1ab3dc5591b3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/bit.mjs
@@ -0,0 +1,148 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+/** @ignore */
+export function getBool(_data, _index, byte, bit) {
+    return (byte & 1 << bit) !== 0;
+}
+/** @ignore */
+export function getBit(_data, _index, byte, bit) {
+    return (byte & 1 << bit) >> bit;
+}
+/** @ignore */
+export function setBool(bytes, index, value) {
+    return value ?
+        !!(bytes[index >> 3] |= (1 << (index % 8))) || true :
+        !(bytes[index >> 3] &= ~(1 << (index % 8))) && false;
+}
+/** @ignore */
+export function truncateBitmap(offset, length, bitmap) {
+    const alignedSize = (bitmap.byteLength + 7) & ~7;
+    if (offset > 0 || bitmap.byteLength < alignedSize) {
+        const bytes = new Uint8Array(alignedSize);
+        // If the offset is a multiple of 8 bits, it's safe to slice the bitmap
+        bytes.set(offset % 8 === 0 ? bitmap.subarray(offset >> 3) :
+            // Otherwise iterate each bit from the offset and return a new one
+            packBools(new BitIterator(bitmap, offset, length, null, getBool)).subarray(0, alignedSize));
+        return bytes;
+    }
+    return bitmap;
+}
+/** @ignore */
+export function packBools(values) {
+    const xs = [];
+    let i = 0, bit = 0, byte = 0;
+    for (const value of values) {
+        value && (byte |= 1 << bit);
+        if (++bit === 8) {
+            xs[i++] = byte;
+            byte = bit = 0;
+        }
+    }
+    if (i === 0 || bit > 0) {
+        xs[i++] = byte;
+    }
+    const b = new Uint8Array((xs.length + 7) & ~7);
+    b.set(xs);
+    return b;
+}
+/** @ignore */
+export class BitIterator {
+    constructor(bytes, begin, length, context, get) {
+        this.bytes = bytes;
+        this.length = length;
+        this.context = context;
+        this.get = get;
+        this.bit = begin % 8;
+        this.byteIndex = begin >> 3;
+        this.byte = bytes[this.byteIndex++];
+        this.index = 0;
+    }
+    next() {
+        if (this.index < this.length) {
+            if (this.bit === 8) {
+                this.bit = 0;
+                this.byte = this.bytes[this.byteIndex++];
+            }
+            return {
+                value: this.get(this.context, this.index++, this.byte, this.bit++)
+            };
+        }
+        return { done: true, value: null };
+    }
+    [Symbol.iterator]() {
+        return this;
+    }
+}
+/**
+ * Compute the population count (the number of bits set to 1) for a range of bits in a Uint8Array.
+ * @param vector The Uint8Array of bits for which to compute the population count.
+ * @param lhs The range's left-hand side (or start) bit
+ * @param rhs The range's right-hand side (or end) bit
+ */
+/** @ignore */
+export function popcnt_bit_range(data, lhs, rhs) {
+    if (rhs - lhs <= 0) {
+        return 0;
+    }
+    // If the bit range is less than one byte, sum the 1 bits in the bit range
+    if (rhs - lhs < 8) {
+        let sum = 0;
+        for (const bit of new BitIterator(data, lhs, rhs - lhs, data, getBit)) {
+            sum += bit;
+        }
+        return sum;
+    }
+    // Get the next lowest multiple of 8 from the right hand side
+    const rhsInside = rhs >> 3 << 3;
+    // Get the next highest multiple of 8 from the left hand side
+    const lhsInside = lhs + (lhs % 8 === 0 ? 0 : 8 - lhs % 8);
+    return (
+    // Get the popcnt of bits between the left hand side, and the next highest multiple of 8
+    popcnt_bit_range(data, lhs, lhsInside) +
+        // Get the popcnt of bits between the right hand side, and the next lowest multiple of 8
+        popcnt_bit_range(data, rhsInside, rhs) +
+        // Get the popcnt of all bits between the left and right hand sides' multiples of 8
+        popcnt_array(data, lhsInside >> 3, (rhsInside - lhsInside) >> 3));
+}
+/** @ignore */
+export function popcnt_array(arr, byteOffset, byteLength) {
+    let cnt = 0, pos = Math.trunc(byteOffset);
+    const view = new DataView(arr.buffer, arr.byteOffset, arr.byteLength);
+    const len = byteLength === void 0 ? arr.byteLength : pos + byteLength;
+    while (len - pos >= 4) {
+        cnt += popcnt_uint32(view.getUint32(pos));
+        pos += 4;
+    }
+    while (len - pos >= 2) {
+        cnt += popcnt_uint32(view.getUint16(pos));
+        pos += 2;
+    }
+    while (len - pos >= 1) {
+        cnt += popcnt_uint32(view.getUint8(pos));
+        pos += 1;
+    }
+    return cnt;
+}
+/** @ignore */
+export function popcnt_uint32(uint32) {
+    let i = Math.trunc(uint32);
+    i = i - ((i >>> 1) & 0x55555555);
+    i = (i & 0x33333333) + ((i >>> 2) & 0x33333333);
+    return (((i + (i >>> 4)) & 0x0F0F0F0F) * 0x01010101) >>> 24;
+}
+
+//# sourceMappingURL=bit.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/util/bit.mjs.map b/igv_component/node_modules/apache-arrow/util/bit.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..1125494102e1348b41b1d953fdaf9bf6d81c6811
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/bit.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/bit.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,cAAc;AACd,MAAM,UAAU,OAAO,CAAC,KAAU,EAAE,MAAc,EAAE,IAAY,EAAE,GAAW;IACzE,OAAO,CAAC,IAAI,GAAG,CAAC,IAAI,GAAG,CAAC,KAAK,CAAC,CAAC;AACnC,CAAC;AAED,cAAc;AACd,MAAM,UAAU,MAAM,CAAC,KAAU,EAAE,MAAc,EAAE,IAAY,EAAE,GAAW;IACxE,OAAO,CAAC,IAAI,GAAG,CAAC,IAAI,GAAG,CAAC,IAAI,GAAc,CAAC;AAC/C,CAAC;AAED,cAAc;AACd,MAAM,UAAU,OAAO,CAAC,KAAiB,EAAE,KAAa,EAAE,KAAU;IAChE,OAAO,KAAK,CAAC,CAAC;QACV,CAAC,CAAC,CAAC,KAAK,CAAC,KAAK,IAAI,CAAC,CAAC,IAAI,CAAC,CAAC,IAAI,CAAC,KAAK,GAAG,CAAC,CAAC,CAAC,CAAC,IAAI,IAAI,CAAC,CAAC;QACrD,CAAC,CAAC,KAAK,CAAC,KAAK,IAAI,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,CAAC,KAAK,GAAG,CAAC,CAAC,CAAC,CAAC,IAAI,KAAK,CAAC;AAC7D,CAAC;AAED,cAAc;AACd,MAAM,UAAU,cAAc,CAAC,MAAc,EAAE,MAAc,EAAE,MAAkB;IAC7E,MAAM,WAAW,GAAG,CAAC,MAAM,CAAC,UAAU,GAAG,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC;IACjD,IAAI,MAAM,GAAG,CAAC,IAAI,MAAM,CAAC,UAAU,GAAG,WAAW,EAAE;QAC/C,MAAM,KAAK,GAAG,IAAI,UAAU,CAAC,WAAW,CAAC,CAAC;QAC1C,uEAAuE;QACvE,KAAK,CAAC,GAAG,CAAC,MAAM,GAAG,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC,MAAM,CAAC,QAAQ,CAAC,MAAM,IAAI,CAAC,CAAC,CAAC,CAAC;YACvD,kEAAkE;YAClE,SAAS,CAAC,IAAI,WAAW,CAAC,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,IAAI,EAAE,OAAO,CAAC,CAAC,CAAC,QAAQ,CAAC,CAAC,EAAE,WAAW,CAAC,CAAC,CAAC;QAChG,OAAO,KAAK,CAAC;KAChB;IACD,OAAO,MAAM,CAAC;AAClB,CAAC;AAED,cAAc;AACd,MAAM,UAAU,SAAS,CAAC,MAAqB;IAC3C,MAAM,EAAE,GAAa,EAAE,CAAC;IACxB,IAAI,CAAC,GAAG,CAAC,EAAE,GAAG,GAAG,CAAC,EAAE,IAAI,GAAG,CAAC,CAAC;IAC7B,KAAK,MAAM,KAAK,IAAI,MAAM,EAAE;QACxB,KAAK,IAAI,CAAC,IAAI,IAAI,CAAC,IAAI,GAAG,CAAC,CAAC;QAC5B,IAAI,EAAE,GAAG,KAAK,CAAC,EAAE;YACb,EAAE,CAAC,CAAC,EAAE,CAAC,GAAG,IAAI,CAAC;YACf,IAAI,GAAG,GAAG,GAAG,CAAC,CAAC;SAClB;KACJ;IACD,IAAI,CAAC,KAAK,CAAC,IAAI,GAAG,GAAG,CAAC,EAAE;QAAE,EAAE,CAAC,CAAC,EAAE,CAAC,GAAG,IAAI,CAAC;KAAE;IAC3C,MAAM,CAAC,GAAG,IAAI,UAAU,CAAC,CAAC,EAAE,CAAC,MAAM,GAAG,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;IAC/C,CAAC,CAAC,GAAG,CAAC,EAAE,CAAC,CAAC;IACV,OAAO,CAAC,CAAC;AACb,CAAC;AAED,cAAc;AACd,MAAM,OAAO,WAAW;IAMpB,YACY,KAAiB,EACzB,KAAa,EACL,MAAc,EACd,OAAY,EACZ,GAAkE;QAJlE,UAAK,GAAL,KAAK,CAAY;QAEjB,WAAM,GAAN,MAAM,CAAQ;QACd,YAAO,GAAP,OAAO,CAAK;QACZ,QAAG,GAAH,GAAG,CAA+D;QAE1E,IAAI,CAAC,GAAG,GAAG,KAAK,GAAG,CAAC,CAAC;QACrB,IAAI,CAAC,SAAS,GAAG,KAAK,IAAI,CAAC,CAAC;QAC5B,IAAI,CAAC,IAAI,GAAG,KAAK,CAAC,IAAI,CAAC,SAAS,EAAE,CAAC,CAAC;QACpC,IAAI,CAAC,KAAK,GAAG,CAAC,CAAC;IACnB,CAAC;IAED,IAAI;QACA,IAAI,IAAI,CAAC,KAAK,GAAG,IAAI,CAAC,MAAM,EAAE;YAC1B,IAAI,IAAI,CAAC,GAAG,KAAK,CAAC,EAAE;gBAChB,IAAI,CAAC,GAAG,GAAG,CAAC,CAAC;gBACb,IAAI,CAAC,IAAI,GAAG,IAAI,CAAC,KAAK,CAAC,IAAI,CAAC,SAAS,EAAE,CAAC,CAAC;aAC5C;YACD,OAAO;gBACH,KAAK,EAAE,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,OAAO,EAAE,IAAI,CAAC,KAAK,EAAE,EAAE,IAAI,CAAC,IAAI,EAAE,IAAI,CAAC,GAAG,EAAE,CAAC;aACrE,CAAC;SACL;QACD,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,IAAI,EAAE,CAAC;IACvC,CAAC;IAED,CAAC,MAAM,CAAC,QAAQ,CAAC;QACb,OAAO,IAAI,CAAC;IAChB,CAAC;CACJ;AAED;;;;;GAKG;AACH,cAAc;AACd,MAAM,UAAU,gBAAgB,CAAC,IAAgB,EAAE,GAAW,EAAE,GAAW;IACvE,IAAI,GAAG,GAAG,GAAG,IAAI,CAAC,EAAE;QAAE,OAAO,CAAC,CAAC;KAAE;IACjC,0EAA0E;IAC1E,IAAI,GAAG,GAAG,GAAG,GAAG,CAAC,EAAE;QACf,IAAI,GAAG,GAAG,CAAC,CAAC;QACZ,KAAK,MAAM,GAAG,IAAI,IAAI,WAAW,CAAC,IAAI,EAAE,GAAG,EAAE,GAAG,GAAG,GAAG,EAAE,IAAI,EAAE,MAAM,CAAC,EAAE;YACnE,GAAG,IAAI,GAAG,CAAC;SACd;QACD,OAAO,GAAG,CAAC;KACd;IACD,6DAA6D;IAC7D,MAAM,SAAS,GAAG,GAAG,IAAI,CAAC,IAAI,CAAC,CAAC;IAChC,6DAA6D;IAC7D,MAAM,SAAS,GAAG,GAAG,GAAG,CAAC,GAAG,GAAG,CAAC,KAAK,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,GAAG,GAAG,GAAG,CAAC,CAAC,CAAC;IAC1D,OAAO;IACH,wFAAwF;IACxF,gBAAgB,CAAC,IAAI,EAAE,GAAG,EAAE,SAAS,CAAC;QACtC,wFAAwF;QACxF,gBAAgB,CAAC,IAAI,EAAE,SAAS,EAAE,GAAG,CAAC;QACtC,mFAAmF;QACnF,YAAY,CAAC,IAAI,EAAE,SAAS,IAAI,CAAC,EAAE,CAAC,SAAS,GAAG,SAAS,CAAC,IAAI,CAAC,CAAC,CACnE,CAAC;AACN,CAAC;AAED,cAAc;AACd,MAAM,UAAU,YAAY,CAAC,GAAoB,EAAE,UAAmB,EAAE,UAAmB;IACvF,IAAI,GAAG,GAAG,CAAC,EAAE,GAAG,GAAG,IAAI,CAAC,KAAK,CAAC,UAAW,CAAC,CAAC;IAC3C,MAAM,IAAI,GAAG,IAAI,QAAQ,CAAC,GAAG,CAAC,MAAM,EAAE,GAAG,CAAC,UAAU,EAAE,GAAG,CAAC,UAAU,CAAC,CAAC;IACtE,MAAM,GAAG,GAAG,UAAU,KAAK,KAAK,CAAC,CAAC,CAAC,CAAC,GAAG,CAAC,UAAU,CAAC,CAAC,CAAC,GAAG,GAAG,UAAU,CAAC;IACtE,OAAO,GAAG,GAAG,GAAG,IAAI,CAAC,EAAE;QACnB,GAAG,IAAI,aAAa,CAAC,IAAI,CAAC,SAAS,CAAC,GAAG,CAAC,CAAC,CAAC;QAC1C,GAAG,IAAI,CAAC,CAAC;KACZ;IACD,OAAO,GAAG,GAAG,GAAG,IAAI,CAAC,EAAE;QACnB,GAAG,IAAI,aAAa,CAAC,IAAI,CAAC,SAAS,CAAC,GAAG,CAAC,CAAC,CAAC;QAC1C,GAAG,IAAI,CAAC,CAAC;KACZ;IACD,OAAO,GAAG,GAAG,GAAG,IAAI,CAAC,EAAE;QACnB,GAAG,IAAI,aAAa,CAAC,IAAI,CAAC,QAAQ,CAAC,GAAG,CAAC,CAAC,CAAC;QACzC,GAAG,IAAI,CAAC,CAAC;KACZ;IACD,OAAO,GAAG,CAAC;AACf,CAAC;AAED,cAAc;AACd,MAAM,UAAU,aAAa,CAAC,MAAc;IACxC,IAAI,CAAC,GAAG,IAAI,CAAC,KAAK,CAAC,MAAM,CAAC,CAAC;IAC3B,CAAC,GAAG,CAAC,GAAG,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,GAAG,UAAU,CAAC,CAAC;IACjC,CAAC,GAAG,CAAC,CAAC,GAAG,UAAU,CAAC,GAAG,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,GAAG,UAAU,CAAC,CAAC;IAChD,OAAO,CAAC,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC,KAAK,CAAC,CAAC,CAAC,GAAG,UAAU,CAAC,GAAG,UAA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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/bn.d.ts b/igv_component/node_modules/apache-arrow/util/bn.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..ef8864505abb9ed8a7f89d48cff04648425da13a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/bn.d.ts
@@ -0,0 +1,89 @@
+import { ArrayBufferViewInput } from './buffer.js';
+import { TypedArray, TypedArrayConstructor } from '../interfaces.js';
+import { BigIntArray, BigIntArrayConstructor } from '../interfaces.js';
+/** @ignore */
+export declare const isArrowBigNumSymbol: unique symbol;
+/** @ignore */ declare type BigNumArray = IntArray | UintArray;
+/** @ignore */ declare type IntArray = Int8Array | Int16Array | Int32Array;
+/** @ignore */ declare type UintArray = Uint8Array | Uint16Array | Uint32Array | Uint8ClampedArray;
+/** @ignore */
+export declare let bignumToString: {
+    <T extends BN<BigNumArray>>(a: T): string;
+};
+/** @ignore */
+export declare let bignumToBigInt: {
+    <T extends BN<BigNumArray>>(a: T): bigint;
+};
+/** @ignore */
+export declare class BN<T extends BigNumArray> {
+    /** @nocollapse */
+    static new<T extends BigNumArray>(num: T, isSigned?: boolean): (T & BN<T>);
+    /** @nocollapse */
+    static signed<T extends IntArray>(num: T): (T & BN<T>);
+    /** @nocollapse */
+    static unsigned<T extends UintArray>(num: T): (T & BN<T>);
+    /** @nocollapse */
+    static decimal<T extends UintArray>(num: T): (T & BN<T>);
+    constructor(num: T, isSigned?: boolean);
+}
+/** @ignore */
+export interface BN<T extends BigNumArray> extends TypedArrayLike<T> {
+    new <T extends ArrayBufferViewInput>(buffer: T, signed?: boolean): T;
+    readonly signed: boolean;
+    readonly TypedArray: TypedArrayConstructor<TypedArray>;
+    readonly BigIntArray: BigIntArrayConstructor<BigIntArray>;
+    [Symbol.toStringTag]: 'Int8Array' | 'Int16Array' | 'Int32Array' | 'Uint8Array' | 'Uint16Array' | 'Uint32Array' | 'Uint8ClampedArray';
+    /**
+     * Convert the bytes to their (positive) decimal representation for printing
+     */
+    toString(): string;
+    /**
+     * Down-convert the bytes to a 53-bit precision integer. Invoked by JS for
+     * arithmetic operators, like `+`. Easy (and unsafe) way to convert BN to
+     * number via `+bn_inst`
+     */
+    valueOf(): number;
+    /**
+     * Return the JSON representation of the bytes. Must be wrapped in double-quotes,
+     * so it's compatible with JSON.stringify().
+     */
+    toJSON(): string;
+    [Symbol.toPrimitive](hint?: any): number | string | bigint;
+}
+/** @ignore */
+interface TypedArrayLike<T extends BigNumArray> {
+    readonly length: number;
+    readonly buffer: ArrayBuffer;
+    readonly byteLength: number;
+    readonly byteOffset: number;
+    readonly BYTES_PER_ELEMENT: number;
+    includes(searchElement: number, fromIndex?: number | undefined): boolean;
+    copyWithin(target: number, start: number, end?: number | undefined): this;
+    every(callbackfn: (value: number, index: number, array: T) => boolean, thisArg?: any): boolean;
+    fill(value: number, start?: number | undefined, end?: number | undefined): this;
+    filter(callbackfn: (value: number, index: number, array: T) => boolean, thisArg?: any): T;
+    find(predicate: (value: number, index: number, obj: T) => boolean, thisArg?: any): number | undefined;
+    findIndex(predicate: (value: number, index: number, obj: T) => boolean, thisArg?: any): number;
+    forEach(callbackfn: (value: number, index: number, array: T) => void, thisArg?: any): void;
+    indexOf(searchElement: number, fromIndex?: number | undefined): number;
+    join(separator?: string | undefined): string;
+    lastIndexOf(searchElement: number, fromIndex?: number | undefined): number;
+    map(callbackfn: (value: number, index: number, array: T) => number, thisArg?: any): T;
+    reduce(callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: T) => number): number;
+    reduce(callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: T) => number, initialValue: number): number;
+    reduce<U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: T) => U, initialValue: U): U;
+    reduceRight(callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: T) => number): number;
+    reduceRight(callbackfn: (previousValue: number, currentValue: number, currentIndex: number, array: T) => number, initialValue: number): number;
+    reduceRight<U>(callbackfn: (previousValue: U, currentValue: number, currentIndex: number, array: T) => U, initialValue: U): U;
+    reverse(): T;
+    set(array: ArrayLike<number>, offset?: number | undefined): void;
+    slice(start?: number | undefined, end?: number | undefined): T;
+    some(callbackfn: (value: number, index: number, array: T) => boolean, thisArg?: any): boolean;
+    sort(compareFn?: ((a: number, b: number) => number) | undefined): this;
+    subarray(begin: number, end?: number | undefined): T;
+    toLocaleString(): string;
+    entries(): IterableIterator<[number, number]>;
+    keys(): IterableIterator<number>;
+    values(): IterableIterator<number>;
+}
+export {};
diff --git a/igv_component/node_modules/apache-arrow/util/bn.d.ts.map b/igv_component/node_modules/apache-arrow/util/bn.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..954d461b0be939cf43a4b7f87c2de55d4de4c6c9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/bn.d.ts.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/bn.js b/igv_component/node_modules/apache-arrow/util/bn.js
new file mode 100644
index 0000000000000000000000000000000000000000..bc357611e8bd55ac24e4b283e9ec9ec0064e0a89
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/bn.js
@@ -0,0 +1,141 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.BN = exports.bignumToBigInt = exports.bignumToString = exports.isArrowBigNumSymbol = void 0;
+const buffer_js_1 = require("./buffer.js");
+const compat_js_1 = require("./compat.js");
+/** @ignore */
+exports.isArrowBigNumSymbol = Symbol.for('isArrowBigNum');
+/** @ignore */
+function BigNum(x, ...xs) {
+    if (xs.length === 0) {
+        return Object.setPrototypeOf((0, buffer_js_1.toArrayBufferView)(this['TypedArray'], x), this.constructor.prototype);
+    }
+    return Object.setPrototypeOf(new this['TypedArray'](x, ...xs), this.constructor.prototype);
+}
+BigNum.prototype[exports.isArrowBigNumSymbol] = true;
+BigNum.prototype.toJSON = function () { return `"${(0, exports.bignumToString)(this)}"`; };
+BigNum.prototype.valueOf = function () { return bignumToNumber(this); };
+BigNum.prototype.toString = function () { return (0, exports.bignumToString)(this); };
+BigNum.prototype[Symbol.toPrimitive] = function (hint = 'default') {
+    switch (hint) {
+        case 'number': return bignumToNumber(this);
+        case 'string': return (0, exports.bignumToString)(this);
+        case 'default': return (0, exports.bignumToBigInt)(this);
+    }
+    // @ts-ignore
+    return (0, exports.bignumToString)(this);
+};
+/** @ignore */
+function SignedBigNum(...args) { return BigNum.apply(this, args); }
+/** @ignore */
+function UnsignedBigNum(...args) { return BigNum.apply(this, args); }
+/** @ignore */
+function DecimalBigNum(...args) { return BigNum.apply(this, args); }
+Object.setPrototypeOf(SignedBigNum.prototype, Object.create(Int32Array.prototype));
+Object.setPrototypeOf(UnsignedBigNum.prototype, Object.create(Uint32Array.prototype));
+Object.setPrototypeOf(DecimalBigNum.prototype, Object.create(Uint32Array.prototype));
+Object.assign(SignedBigNum.prototype, BigNum.prototype, { 'constructor': SignedBigNum, 'signed': true, 'TypedArray': Int32Array, 'BigIntArray': compat_js_1.BigInt64Array });
+Object.assign(UnsignedBigNum.prototype, BigNum.prototype, { 'constructor': UnsignedBigNum, 'signed': false, 'TypedArray': Uint32Array, 'BigIntArray': compat_js_1.BigUint64Array });
+Object.assign(DecimalBigNum.prototype, BigNum.prototype, { 'constructor': DecimalBigNum, 'signed': true, 'TypedArray': Uint32Array, 'BigIntArray': compat_js_1.BigUint64Array });
+/** @ignore */
+function bignumToNumber(bn) {
+    const { buffer, byteOffset, length, 'signed': signed } = bn;
+    const words = new compat_js_1.BigUint64Array(buffer, byteOffset, length);
+    const negative = signed && words[words.length - 1] & (BigInt(1) << BigInt(63));
+    let number = negative ? BigInt(1) : BigInt(0);
+    let i = BigInt(0);
+    if (!negative) {
+        for (const word of words) {
+            number += word * (BigInt(1) << (BigInt(32) * i++));
+        }
+    }
+    else {
+        for (const word of words) {
+            number += ~word * (BigInt(1) << (BigInt(32) * i++));
+        }
+        number *= BigInt(-1);
+    }
+    return number;
+}
+if (!compat_js_1.BigIntAvailable) {
+    exports.bignumToString = decimalToString;
+    exports.bignumToBigInt = exports.bignumToString;
+}
+else {
+    exports.bignumToBigInt = ((a) => a.byteLength === 8 ? new a['BigIntArray'](a.buffer, a.byteOffset, 1)[0] : decimalToString(a));
+    exports.bignumToString = ((a) => a.byteLength === 8 ? `${new a['BigIntArray'](a.buffer, a.byteOffset, 1)[0]}` : decimalToString(a));
+}
+/** @ignore */
+function decimalToString(a) {
+    let digits = '';
+    const base64 = new Uint32Array(2);
+    let base32 = new Uint16Array(a.buffer, a.byteOffset, a.byteLength / 2);
+    const checks = new Uint32Array((base32 = new Uint16Array(base32).reverse()).buffer);
+    let i = -1;
+    const n = base32.length - 1;
+    do {
+        for (base64[0] = base32[i = 0]; i < n;) {
+            base32[i++] = base64[1] = base64[0] / 10;
+            base64[0] = ((base64[0] - base64[1] * 10) << 16) + base32[i];
+        }
+        base32[i] = base64[1] = base64[0] / 10;
+        base64[0] = base64[0] - base64[1] * 10;
+        digits = `${base64[0]}${digits}`;
+    } while (checks[0] || checks[1] || checks[2] || checks[3]);
+    return digits !== null && digits !== void 0 ? digits : `0`;
+}
+/** @ignore */
+class BN {
+    /** @nocollapse */
+    static new(num, isSigned) {
+        switch (isSigned) {
+            case true: return new SignedBigNum(num);
+            case false: return new UnsignedBigNum(num);
+        }
+        switch (num.constructor) {
+            case Int8Array:
+            case Int16Array:
+            case Int32Array:
+            case compat_js_1.BigInt64Array:
+                return new SignedBigNum(num);
+        }
+        if (num.byteLength === 16) {
+            return new DecimalBigNum(num);
+        }
+        return new UnsignedBigNum(num);
+    }
+    /** @nocollapse */
+    static signed(num) {
+        return new SignedBigNum(num);
+    }
+    /** @nocollapse */
+    static unsigned(num) {
+        return new UnsignedBigNum(num);
+    }
+    /** @nocollapse */
+    static decimal(num) {
+        return new DecimalBigNum(num);
+    }
+    constructor(num, isSigned) {
+        return BN.new(num, isSigned);
+    }
+}
+exports.BN = BN;
+
+//# sourceMappingURL=bn.js.map
diff --git a/igv_component/node_modules/apache-arrow/util/bn.js.map b/igv_component/node_modules/apache-arrow/util/bn.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..0e5e0915fe5f8cfc4a3c8f8de105625fab496d62
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/bn.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/bn.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,2CAAsE;AAGtE,2CAA6E;AAE7E,cAAc;AACD,QAAA,mBAAmB,GAAG,MAAM,CAAC,GAAG,CAAC,eAAe,CAAC,CAAC;AAM/D,cAAc;AACd,SAAS,MAAM,CAAY,CAAM,EAAE,GAAG,EAAO;IACzC,IAAI,EAAE,CAAC,MAAM,KAAK,CAAC,EAAE;QACjB,OAAO,MAAM,CAAC,cAAc,CAAC,IAAA,6BAAiB,EAAC,IAAI,CAAC,YAAY,CAAC,EAAE,CAAC,CAAC,EAAE,IAAI,CAAC,WAAW,CAAC,SAAS,CAAC,CAAC;KACtG;IACD,OAAO,MAAM,CAAC,cAAc,CAAC,IAAI,IAAI,CAAC,YAAY,CAAC,CAAC,CAAC,EAAE,GAAG,EAAE,CAAC,EAAE,IAAI,CAAC,WAAW,CAAC,SAAS,CAAC,CAAC;AAC/F,CAAC;AAED,MAAM,CAAC,SAAS,CAAC,2BAAmB,CAAC,GAAG,IAAI,CAAC;AAC7C,MAAM,CAAC,SAAS,CAAC,MAAM,GAAG,cAAgD,OAAO,IAAI,IAAA,sBAAc,EAAC,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC;AAChH,MAAM,CAAC,SAAS,CAAC,OAAO,GAAG,cAAgD,OAAO,cAAc,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC,CAAC;AAC1G,MAAM,CAAC,SAAS,CAAC,QAAQ,GAAG,cAAgD,OAAO,IAAA,sBAAc,EAAC,IAAI,CAAC,CAAC,CAAC,CAAC,CAAC;AAC3G,MAAM,CAAC,SAAS,CAAC,MAAM,CAAC,WAAW,CAAC,GAAG,UAA8C,OAAwC,SAAS;IAClI,QAAQ,IAAI,EAAE;QACV,KAAK,QAAQ,CAAC,CAAC,OAAO,cAAc,CAAC,IAAI,CAAC,CAAC;QAC3C,KAAK,QAAQ,CAAC,CAAC,OAAO,IAAA,sBAAc,EAAC,IAAI,CAAC,CAAC;QAC3C,KAAK,SAAS,CAAC,CAAC,OAAO,IAAA,sBAAc,EAAC,IAAI,CAAC,CAAC;KAC/C;IACD,aAAa;IACb,OAAO,IAAA,sBAAc,EAAC,IAAI,CAAC,CAAC;AAChC,CAAC,CAAC;AAQF,cAAc;AACd,SAAS,YAAY,CAAY,GAAG,IAA+B,IAAI,OAAO,MAAM,CAAC,KAAK,CAAC,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,CAAC;AACzG,cAAc;AACd,SAAS,cAAc,CAAY,GAAG,IAA+B,IAAI,OAAO,MAAM,CAAC,KAAK,CAAC,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,CAAC;AAC3G,cAAc;AACd,SAAS,aAAa,CAAY,GAAG,IAA+B,IAAI,OAAO,MAAM,CAAC,KAAK,CAAC,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,CAAC;AAE1G,MAAM,CAAC,cAAc,CAAC,YAAY,CAAC,SAAS,EAAE,MAAM,CAAC,MAAM,CAAC,UAAU,CAAC,SAAS,CAAC,CAAC,CAAC;AACnF,MAAM,CAAC,cAAc,CAAC,cAAc,CAAC,SAAS,EAAE,MAAM,CAAC,MAAM,CAAC,WAAW,CAAC,SAAS,CAAC,CAAC,CAAC;AACtF,MAAM,CAAC,cAAc,CAAC,aAAa,CAAC,SAAS,EAAE,MAAM,CAAC,MAAM,CAAC,WAAW,CAAC,SAAS,CAAC,CAAC,CAAC;AACrF,MAAM,CAAC,MAAM,CAAC,YAAY,CAAC,SAAS,EAAE,MAAM,CAAC,SAAS,EAAE,EAAE,aAAa,EAAE,YAAY,EAAE,QAAQ,EAAE,IAAI,EAAE,YAAY,EAAE,UAAU,EAAE,aAAa,EAAE,yBAAa,EAAE,CAAC,CAAC;AACjK,MAAM,CAAC,MAAM,CAAC,cAAc,CAAC,SAAS,EAAE,MAAM,CAAC,SAAS,EAAE,EAAE,aAAa,EAAE,cAAc,EAAE,QAAQ,EAAE,KAAK,EAAE,YAAY,EAAE,WAAW,EAAE,aAAa,EAAE,0BAAc,EAAE,CAAC,CAAC;AACxK,MAAM,CAAC,MAAM,CAAC,aAAa,CAAC,SAAS,EAAE,MAAM,CAAC,SAAS,EAAE,EAAE,aAAa,EAAE,aAAa,EAAE,QAAQ,EAAE,IAAI,EAAE,YAAY,EAAE,WAAW,EAAE,aAAa,EAAE,0BAAc,EAAE,CAAC,CAAC;AAErK,cAAc;AACd,SAAS,cAAc,CAA4B,EAAK;IACpD,MAAM,EAAE,MAAM,EAAE,UAAU,EAAE,MAAM,EAAE,QAAQ,EAAE,MAAM,EAAE,GAAG,EAAE,CAAC;IAC5D,MAAM,KAAK,GAAG,IAAI,0BAAc,CAAC,MAAM,EAAE,UAAU,EAAE,MAAM,CAAC,CAAC;IAC7D,MAAM,QAAQ,GAAG,MAAM,IAAI,KAAK,CAAC,KAAK,CAAC,MAAM,GAAG,CAAC,CAAC,GAAG,CAAC,MAAM,CAAC,CAAC,CAAC,IAAI,MAAM,CAAC,EAAE,CAAC,CAAC,CAAC;IAC/E,IAAI,MAAM,GAAG,QAAQ,CAAC,CAAC,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC;IAC9C,IAAI,CAAC,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC;IAClB,IAAI,CAAC,QAAQ,EAAE;QACX,KAAK,MAAM,IAAI,IAAI,KAAK,EAAE;YACtB,MAAM,IAAI,IAAI,GAAG,CAAC,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,MAAM,CAAC,EAAE,CAAC,GAAG,CAAC,EAAE,CAAC,CAAC,CAAC;SACtD;KACJ;SAAM;QACH,KAAK,MAAM,IAAI,IAAI,KAAK,EAAE;YACtB,MAAM,IAAI,CAAC,IAAI,GAAG,CAAC,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,MAAM,CAAC,EAAE,CAAC,GAAG,CAAC,EAAE,CAAC,CAAC,CAAC;SACvD;QACD,MAAM,IAAI,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC;KACxB;IACD,OAAO,MAAM,CAAC;AAClB,CAAC;AAOD,IAAI,CAAC,2BAAe,EAAE;IAClB,sBAAc,GAAG,eAAe,CAAC;IACjC,sBAAc,GAAQ,sBAAc,CAAC;CACxC;KAAM;IACH,sBAAc,GAAG,CAAC,CAA4B,CAAI,EAAE,EAAE,CAAC,CAAC,CAAC,UAAU,KAAK,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,aAAa,CAAC,CAAC,CAAC,CAAC,MAAM,EAAE,CAAC,CAAC,UAAU,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,CAAM,eAAe,CAAC,CAAC,CAAC,CAAC,CAAC;IAC1J,sBAAc,GAAG,CAAC,CAA4B,CAAI,EAAE,EAAE,CAAC,CAAC,CAAC,UAAU,KAAK,CAAC,CAAC,CAAC,CAAC,GAAG,IAAI,CAAC,CAAC,aAAa,CAAC,CAAC,CAAC,CAAC,MAAM,EAAE,CAAC,CAAC,UAAU,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,eAAe,CAAC,CAAC,CAAC,CAAC,CAAC;CAC7J;AAED,cAAc;AACd,SAAS,eAAe,CAA4B,CAAI;IACpD,IAAI,MAAM,GAAG,EAAE,CAAC;IAChB,MAAM,MAAM,GAAG,IAAI,WAAW,CAAC,CAAC,CAAC,CAAC;IAClC,IAAI,MAAM,GAAG,IAAI,WAAW,CAAC,CAAC,CAAC,MAAM,EAAE,CAAC,CAAC,UAAU,EAAE,CAAC,CAAC,UAAU,GAAG,CAAC,CAAC,CAAC;IACvE,MAAM,MAAM,GAAG,IAAI,WAAW,CAAC,CAAC,MAAM,GAAG,IAAI,WAAW,CAAC,MAAM,CAAC,CAAC,OAAO,EAAE,CAAC,CAAC,MAAM,CAAC,CAAC;IACpF,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC;IACX,MAAM,CAAC,GAAG,MAAM,CAAC,MAAM,GAAG,CAAC,CAAC;IAC5B,GAAG;QACC,KAAK,MAAM,CAAC,CAAC,CAAC,GAAG,MAAM,CAAC,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,GAAG,CAAC,GAAG;YACpC,MAAM,CAAC,CAAC,EAAE,CAAC,GAAG,MAAM,CAAC,CAAC,CAAC,GAAG,MAAM,CAAC,CAAC,CAAC,GAAG,EAAE,CAAC;YACzC,MAAM,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC,MAAM,CAAC,CAAC,CAAC,GAAG,MAAM,CAAC,CAAC,CAAC,GAAG,EAAE,CAAC,IAAI,EAAE,CAAC,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC;SAChE;QACD,MAAM,CAAC,CAAC,CAAC,GAAG,MAAM,CAAC,CAAC,CAAC,GAAG,MAAM,CAAC,CAAC,CAAC,GAAG,EAAE,CAAC;QACvC,MAAM,CAAC,CAAC,CAAC,GAAG,MAAM,CAAC,CAAC,CAAC,GAAG,MAAM,CAAC,CAAC,CAAC,GAAG,EAAE,CAAC;QACvC,MAAM,GAAG,GAAG,MAAM,CAAC,CAAC,CAAC,GAAG,MAAM,EAAE,CAAC;KACpC,QAAQ,MAAM,CAAC,CAAC,CA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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/bn.mjs b/igv_component/node_modules/apache-arrow/util/bn.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..9cc16b5fc28f08a162d46a479ae59adf6aa98560
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/bn.mjs
@@ -0,0 +1,141 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { toArrayBufferView } from './buffer.mjs';
+import { BigIntAvailable, BigInt64Array, BigUint64Array } from './compat.mjs';
+/** @ignore */
+export const isArrowBigNumSymbol = Symbol.for('isArrowBigNum');
+/** @ignore */
+function BigNum(x, ...xs) {
+    if (xs.length === 0) {
+        return Object.setPrototypeOf(toArrayBufferView(this['TypedArray'], x), this.constructor.prototype);
+    }
+    return Object.setPrototypeOf(new this['TypedArray'](x, ...xs), this.constructor.prototype);
+}
+BigNum.prototype[isArrowBigNumSymbol] = true;
+BigNum.prototype.toJSON = function () { return `"${bignumToString(this)}"`; };
+BigNum.prototype.valueOf = function () { return bignumToNumber(this); };
+BigNum.prototype.toString = function () { return bignumToString(this); };
+BigNum.prototype[Symbol.toPrimitive] = function (hint = 'default') {
+    switch (hint) {
+        case 'number': return bignumToNumber(this);
+        case 'string': return bignumToString(this);
+        case 'default': return bignumToBigInt(this);
+    }
+    // @ts-ignore
+    return bignumToString(this);
+};
+/** @ignore */
+function SignedBigNum(...args) { return BigNum.apply(this, args); }
+/** @ignore */
+function UnsignedBigNum(...args) { return BigNum.apply(this, args); }
+/** @ignore */
+function DecimalBigNum(...args) { return BigNum.apply(this, args); }
+Object.setPrototypeOf(SignedBigNum.prototype, Object.create(Int32Array.prototype));
+Object.setPrototypeOf(UnsignedBigNum.prototype, Object.create(Uint32Array.prototype));
+Object.setPrototypeOf(DecimalBigNum.prototype, Object.create(Uint32Array.prototype));
+Object.assign(SignedBigNum.prototype, BigNum.prototype, { 'constructor': SignedBigNum, 'signed': true, 'TypedArray': Int32Array, 'BigIntArray': BigInt64Array });
+Object.assign(UnsignedBigNum.prototype, BigNum.prototype, { 'constructor': UnsignedBigNum, 'signed': false, 'TypedArray': Uint32Array, 'BigIntArray': BigUint64Array });
+Object.assign(DecimalBigNum.prototype, BigNum.prototype, { 'constructor': DecimalBigNum, 'signed': true, 'TypedArray': Uint32Array, 'BigIntArray': BigUint64Array });
+/** @ignore */
+function bignumToNumber(bn) {
+    const { buffer, byteOffset, length, 'signed': signed } = bn;
+    const words = new BigUint64Array(buffer, byteOffset, length);
+    const negative = signed && words[words.length - 1] & (BigInt(1) << BigInt(63));
+    let number = negative ? BigInt(1) : BigInt(0);
+    let i = BigInt(0);
+    if (!negative) {
+        for (const word of words) {
+            number += word * (BigInt(1) << (BigInt(32) * i++));
+        }
+    }
+    else {
+        for (const word of words) {
+            number += ~word * (BigInt(1) << (BigInt(32) * i++));
+        }
+        number *= BigInt(-1);
+    }
+    return number;
+}
+/** @ignore */
+export let bignumToString;
+/** @ignore */
+export let bignumToBigInt;
+if (!BigIntAvailable) {
+    bignumToString = decimalToString;
+    bignumToBigInt = bignumToString;
+}
+else {
+    bignumToBigInt = ((a) => a.byteLength === 8 ? new a['BigIntArray'](a.buffer, a.byteOffset, 1)[0] : decimalToString(a));
+    bignumToString = ((a) => a.byteLength === 8 ? `${new a['BigIntArray'](a.buffer, a.byteOffset, 1)[0]}` : decimalToString(a));
+}
+/** @ignore */
+function decimalToString(a) {
+    let digits = '';
+    const base64 = new Uint32Array(2);
+    let base32 = new Uint16Array(a.buffer, a.byteOffset, a.byteLength / 2);
+    const checks = new Uint32Array((base32 = new Uint16Array(base32).reverse()).buffer);
+    let i = -1;
+    const n = base32.length - 1;
+    do {
+        for (base64[0] = base32[i = 0]; i < n;) {
+            base32[i++] = base64[1] = base64[0] / 10;
+            base64[0] = ((base64[0] - base64[1] * 10) << 16) + base32[i];
+        }
+        base32[i] = base64[1] = base64[0] / 10;
+        base64[0] = base64[0] - base64[1] * 10;
+        digits = `${base64[0]}${digits}`;
+    } while (checks[0] || checks[1] || checks[2] || checks[3]);
+    return digits !== null && digits !== void 0 ? digits : `0`;
+}
+/** @ignore */
+export class BN {
+    /** @nocollapse */
+    static new(num, isSigned) {
+        switch (isSigned) {
+            case true: return new SignedBigNum(num);
+            case false: return new UnsignedBigNum(num);
+        }
+        switch (num.constructor) {
+            case Int8Array:
+            case Int16Array:
+            case Int32Array:
+            case BigInt64Array:
+                return new SignedBigNum(num);
+        }
+        if (num.byteLength === 16) {
+            return new DecimalBigNum(num);
+        }
+        return new UnsignedBigNum(num);
+    }
+    /** @nocollapse */
+    static signed(num) {
+        return new SignedBigNum(num);
+    }
+    /** @nocollapse */
+    static unsigned(num) {
+        return new UnsignedBigNum(num);
+    }
+    /** @nocollapse */
+    static decimal(num) {
+        return new DecimalBigNum(num);
+    }
+    constructor(num, isSigned) {
+        return BN.new(num, isSigned);
+    }
+}
+
+//# sourceMappingURL=bn.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/util/bn.mjs.map b/igv_component/node_modules/apache-arrow/util/bn.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..0d0dbeda73a1a8f73bc6530108fb44cb2d7185e7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/bn.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/buffer.d.ts b/igv_component/node_modules/apache-arrow/util/buffer.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..ea0e5df2e1eea1c857dfd3a01291053ff82af885
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/buffer.d.ts
@@ -0,0 +1,52 @@
+import { TypedArray, TypedArrayConstructor, BigIntArrayConstructor } from '../interfaces.js';
+import { ByteBuffer } from 'flatbuffers';
+/** @ignore */
+export declare function memcpy<TTarget extends ArrayBufferView, TSource extends ArrayBufferView>(target: TTarget, source: TSource, targetByteOffset?: number, sourceByteLength?: number): TTarget;
+/** @ignore */
+export declare function joinUint8Arrays(chunks: Uint8Array[], size?: number | null): [Uint8Array, Uint8Array[], number];
+/** @ignore */
+export declare type ArrayBufferViewInput = ArrayBufferView | ArrayBufferLike | ArrayBufferView | Iterable<number> | ArrayLike<number> | ByteBuffer | string | null | undefined | IteratorResult<ArrayBufferView | ArrayBufferLike | ArrayBufferView | Iterable<number> | ArrayLike<number> | ByteBuffer | string | null | undefined> | ReadableStreamReadResult<ArrayBufferView | ArrayBufferLike | ArrayBufferView | Iterable<number> | ArrayLike<number> | ByteBuffer | string | null | undefined>;
+/** @ignore */
+export declare function toArrayBufferView<T extends TypedArrayConstructor<any> | BigIntArrayConstructor<any>>(ArrayBufferViewCtor: any, input: ArrayBufferViewInput): InstanceType<T>;
+/** @ignore */ export declare const toInt8Array: (input: ArrayBufferViewInput) => any;
+/** @ignore */ export declare const toInt16Array: (input: ArrayBufferViewInput) => any;
+/** @ignore */ export declare const toInt32Array: (input: ArrayBufferViewInput) => any;
+/** @ignore */ export declare const toBigInt64Array: (input: ArrayBufferViewInput) => any;
+/** @ignore */ export declare const toUint8Array: (input: ArrayBufferViewInput) => any;
+/** @ignore */ export declare const toUint16Array: (input: ArrayBufferViewInput) => any;
+/** @ignore */ export declare const toUint32Array: (input: ArrayBufferViewInput) => any;
+/** @ignore */ export declare const toBigUint64Array: (input: ArrayBufferViewInput) => any;
+/** @ignore */ export declare const toFloat32Array: (input: ArrayBufferViewInput) => any;
+/** @ignore */ export declare const toFloat64Array: (input: ArrayBufferViewInput) => any;
+/** @ignore */ export declare const toUint8ClampedArray: (input: ArrayBufferViewInput) => any;
+/** @ignore */
+declare type ArrayBufferViewIteratorInput = Iterable<ArrayBufferViewInput> | ArrayBufferViewInput;
+/** @ignore */
+export declare function toArrayBufferViewIterator<T extends TypedArray>(ArrayCtor: TypedArrayConstructor<T>, source: ArrayBufferViewIteratorInput): Generator<T, T, number | undefined>;
+/** @ignore */ export declare const toInt8ArrayIterator: (input: ArrayBufferViewIteratorInput) => Generator<Int8Array, Int8Array, number | undefined>;
+/** @ignore */ export declare const toInt16ArrayIterator: (input: ArrayBufferViewIteratorInput) => Generator<Int16Array, Int16Array, number | undefined>;
+/** @ignore */ export declare const toInt32ArrayIterator: (input: ArrayBufferViewIteratorInput) => Generator<Int32Array, Int32Array, number | undefined>;
+/** @ignore */ export declare const toUint8ArrayIterator: (input: ArrayBufferViewIteratorInput) => Generator<Uint8Array, Uint8Array, number | undefined>;
+/** @ignore */ export declare const toUint16ArrayIterator: (input: ArrayBufferViewIteratorInput) => Generator<Uint16Array, Uint16Array, number | undefined>;
+/** @ignore */ export declare const toUint32ArrayIterator: (input: ArrayBufferViewIteratorInput) => Generator<Uint32Array, Uint32Array, number | undefined>;
+/** @ignore */ export declare const toFloat32ArrayIterator: (input: ArrayBufferViewIteratorInput) => Generator<Float32Array, Float32Array, number | undefined>;
+/** @ignore */ export declare const toFloat64ArrayIterator: (input: ArrayBufferViewIteratorInput) => Generator<Float64Array, Float64Array, number | undefined>;
+/** @ignore */ export declare const toUint8ClampedArrayIterator: (input: ArrayBufferViewIteratorInput) => Generator<Uint8ClampedArray, Uint8ClampedArray, number | undefined>;
+/** @ignore */
+declare type ArrayBufferViewAsyncIteratorInput = AsyncIterable<ArrayBufferViewInput> | Iterable<ArrayBufferViewInput> | PromiseLike<ArrayBufferViewInput> | ArrayBufferViewInput;
+/** @ignore */
+export declare function toArrayBufferViewAsyncIterator<T extends TypedArray>(ArrayCtor: TypedArrayConstructor<T>, source: ArrayBufferViewAsyncIteratorInput): AsyncGenerator<T, T, number | undefined>;
+/** @ignore */ export declare const toInt8ArrayAsyncIterator: (input: ArrayBufferViewAsyncIteratorInput) => AsyncGenerator<Int8Array, Int8Array, number | undefined>;
+/** @ignore */ export declare const toInt16ArrayAsyncIterator: (input: ArrayBufferViewAsyncIteratorInput) => AsyncGenerator<Int16Array, Int16Array, number | undefined>;
+/** @ignore */ export declare const toInt32ArrayAsyncIterator: (input: ArrayBufferViewAsyncIteratorInput) => AsyncGenerator<Int32Array, Int32Array, number | undefined>;
+/** @ignore */ export declare const toUint8ArrayAsyncIterator: (input: ArrayBufferViewAsyncIteratorInput) => AsyncGenerator<Uint8Array, Uint8Array, number | undefined>;
+/** @ignore */ export declare const toUint16ArrayAsyncIterator: (input: ArrayBufferViewAsyncIteratorInput) => AsyncGenerator<Uint16Array, Uint16Array, number | undefined>;
+/** @ignore */ export declare const toUint32ArrayAsyncIterator: (input: ArrayBufferViewAsyncIteratorInput) => AsyncGenerator<Uint32Array, Uint32Array, number | undefined>;
+/** @ignore */ export declare const toFloat32ArrayAsyncIterator: (input: ArrayBufferViewAsyncIteratorInput) => AsyncGenerator<Float32Array, Float32Array, number | undefined>;
+/** @ignore */ export declare const toFloat64ArrayAsyncIterator: (input: ArrayBufferViewAsyncIteratorInput) => AsyncGenerator<Float64Array, Float64Array, number | undefined>;
+/** @ignore */ export declare const toUint8ClampedArrayAsyncIterator: (input: ArrayBufferViewAsyncIteratorInput) => AsyncGenerator<Uint8ClampedArray, Uint8ClampedArray, number | undefined>;
+/** @ignore */
+export declare function rebaseValueOffsets(offset: number, length: number, valueOffsets: Int32Array): Int32Array;
+/** @ignore */
+export declare function compareArrayLike<T extends ArrayLike<any>>(a: T, b: T): boolean;
+export {};
diff --git a/igv_component/node_modules/apache-arrow/util/buffer.d.ts.map b/igv_component/node_modules/apache-arrow/util/buffer.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..6fd2ce33237e6b007657e63c069b7827f1873a5e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/buffer.d.ts.map
@@ -0,0 +1 @@
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diff --git a/igv_component/node_modules/apache-arrow/util/buffer.js b/igv_component/node_modules/apache-arrow/util/buffer.js
new file mode 100644
index 0000000000000000000000000000000000000000..eb2cea6ed84209683481b1a4912bbd46d6a60aa9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/buffer.js
@@ -0,0 +1,262 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.compareArrayLike = exports.rebaseValueOffsets = exports.toUint8ClampedArrayAsyncIterator = exports.toFloat64ArrayAsyncIterator = exports.toFloat32ArrayAsyncIterator = exports.toUint32ArrayAsyncIterator = exports.toUint16ArrayAsyncIterator = exports.toUint8ArrayAsyncIterator = exports.toInt32ArrayAsyncIterator = exports.toInt16ArrayAsyncIterator = exports.toInt8ArrayAsyncIterator = exports.toArrayBufferViewAsyncIterator = exports.toUint8ClampedArrayIterator = exports.toFloat64ArrayIterator = exports.toFloat32ArrayIterator = exports.toUint32ArrayIterator = exports.toUint16ArrayIterator = exports.toUint8ArrayIterator = exports.toInt32ArrayIterator = exports.toInt16ArrayIterator = exports.toInt8ArrayIterator = exports.toArrayBufferViewIterator = exports.toUint8ClampedArray = exports.toFloat64Array = exports.toFloat32Array = exports.toBigUint64Array = exports.toUint32Array = exports.toUint16Array = exports.toUint8Array = exports.toBigInt64Array = exports.toInt32Array = exports.toInt16Array = exports.toInt8Array = exports.toArrayBufferView = exports.joinUint8Arrays = exports.memcpy = void 0;
+const tslib_1 = require("tslib");
+const utf8_js_1 = require("../util/utf8.js");
+const compat_js_1 = require("./compat.js");
+/** @ignore */
+const SharedArrayBuf = (typeof SharedArrayBuffer !== 'undefined' ? SharedArrayBuffer : ArrayBuffer);
+/** @ignore */
+function collapseContiguousByteRanges(chunks) {
+    const result = chunks[0] ? [chunks[0]] : [];
+    let xOffset, yOffset, xLen, yLen;
+    for (let x, y, i = 0, j = 0, n = chunks.length; ++i < n;) {
+        x = result[j];
+        y = chunks[i];
+        // continue if x and y don't share the same underlying ArrayBuffer, or if x isn't before y
+        if (!x || !y || x.buffer !== y.buffer || y.byteOffset < x.byteOffset) {
+            y && (result[++j] = y);
+            continue;
+        }
+        ({ byteOffset: xOffset, byteLength: xLen } = x);
+        ({ byteOffset: yOffset, byteLength: yLen } = y);
+        // continue if the byte ranges of x and y aren't contiguous
+        if ((xOffset + xLen) < yOffset || (yOffset + yLen) < xOffset) {
+            y && (result[++j] = y);
+            continue;
+        }
+        result[j] = new Uint8Array(x.buffer, xOffset, yOffset - xOffset + yLen);
+    }
+    return result;
+}
+/** @ignore */
+function memcpy(target, source, targetByteOffset = 0, sourceByteLength = source.byteLength) {
+    const targetByteLength = target.byteLength;
+    const dst = new Uint8Array(target.buffer, target.byteOffset, targetByteLength);
+    const src = new Uint8Array(source.buffer, source.byteOffset, Math.min(sourceByteLength, targetByteLength));
+    dst.set(src, targetByteOffset);
+    return target;
+}
+exports.memcpy = memcpy;
+/** @ignore */
+function joinUint8Arrays(chunks, size) {
+    // collapse chunks that share the same underlying ArrayBuffer and whose byte ranges overlap,
+    // to avoid unnecessarily copying the bytes to do this buffer join. This is a common case during
+    // streaming, where we may be reading partial byte ranges out of the same underlying ArrayBuffer
+    const result = collapseContiguousByteRanges(chunks);
+    const byteLength = result.reduce((x, b) => x + b.byteLength, 0);
+    let source, sliced, buffer;
+    let offset = 0, index = -1;
+    const length = Math.min(size || Number.POSITIVE_INFINITY, byteLength);
+    for (const n = result.length; ++index < n;) {
+        source = result[index];
+        sliced = source.subarray(0, Math.min(source.length, length - offset));
+        if (length <= (offset + sliced.length)) {
+            if (sliced.length < source.length) {
+                result[index] = source.subarray(sliced.length);
+            }
+            else if (sliced.length === source.length) {
+                index++;
+            }
+            buffer ? memcpy(buffer, sliced, offset) : (buffer = sliced);
+            break;
+        }
+        memcpy(buffer || (buffer = new Uint8Array(length)), sliced, offset);
+        offset += sliced.length;
+    }
+    return [buffer || new Uint8Array(0), result.slice(index), byteLength - (buffer ? buffer.byteLength : 0)];
+}
+exports.joinUint8Arrays = joinUint8Arrays;
+/** @ignore */
+function toArrayBufferView(ArrayBufferViewCtor, input) {
+    let value = (0, compat_js_1.isIteratorResult)(input) ? input.value : input;
+    if (value instanceof ArrayBufferViewCtor) {
+        if (ArrayBufferViewCtor === Uint8Array) {
+            // Node's `Buffer` class passes the `instanceof Uint8Array` check, but we need
+            // a real Uint8Array, since Buffer#slice isn't the same as Uint8Array#slice :/
+            return new ArrayBufferViewCtor(value.buffer, value.byteOffset, value.byteLength);
+        }
+        return value;
+    }
+    if (!value) {
+        return new ArrayBufferViewCtor(0);
+    }
+    if (typeof value === 'string') {
+        value = (0, utf8_js_1.encodeUtf8)(value);
+    }
+    if (value instanceof ArrayBuffer) {
+        return new ArrayBufferViewCtor(value);
+    }
+    if (value instanceof SharedArrayBuf) {
+        return new ArrayBufferViewCtor(value);
+    }
+    if ((0, compat_js_1.isFlatbuffersByteBuffer)(value)) {
+        return toArrayBufferView(ArrayBufferViewCtor, value.bytes());
+    }
+    return !ArrayBuffer.isView(value) ? ArrayBufferViewCtor.from(value) : (value.byteLength <= 0 ? new ArrayBufferViewCtor(0)
+        : new ArrayBufferViewCtor(value.buffer, value.byteOffset, value.byteLength / ArrayBufferViewCtor.BYTES_PER_ELEMENT));
+}
+exports.toArrayBufferView = toArrayBufferView;
+/** @ignore */ const toInt8Array = (input) => toArrayBufferView(Int8Array, input);
+exports.toInt8Array = toInt8Array;
+/** @ignore */ const toInt16Array = (input) => toArrayBufferView(Int16Array, input);
+exports.toInt16Array = toInt16Array;
+/** @ignore */ const toInt32Array = (input) => toArrayBufferView(Int32Array, input);
+exports.toInt32Array = toInt32Array;
+/** @ignore */ const toBigInt64Array = (input) => toArrayBufferView(compat_js_1.BigInt64Array, input);
+exports.toBigInt64Array = toBigInt64Array;
+/** @ignore */ const toUint8Array = (input) => toArrayBufferView(Uint8Array, input);
+exports.toUint8Array = toUint8Array;
+/** @ignore */ const toUint16Array = (input) => toArrayBufferView(Uint16Array, input);
+exports.toUint16Array = toUint16Array;
+/** @ignore */ const toUint32Array = (input) => toArrayBufferView(Uint32Array, input);
+exports.toUint32Array = toUint32Array;
+/** @ignore */ const toBigUint64Array = (input) => toArrayBufferView(compat_js_1.BigUint64Array, input);
+exports.toBigUint64Array = toBigUint64Array;
+/** @ignore */ const toFloat32Array = (input) => toArrayBufferView(Float32Array, input);
+exports.toFloat32Array = toFloat32Array;
+/** @ignore */ const toFloat64Array = (input) => toArrayBufferView(Float64Array, input);
+exports.toFloat64Array = toFloat64Array;
+/** @ignore */ const toUint8ClampedArray = (input) => toArrayBufferView(Uint8ClampedArray, input);
+exports.toUint8ClampedArray = toUint8ClampedArray;
+/** @ignore */
+const pump = (iterator) => { iterator.next(); return iterator; };
+/** @ignore */
+function* toArrayBufferViewIterator(ArrayCtor, source) {
+    const wrap = function* (x) { yield x; };
+    const buffers = (typeof source === 'string') ? wrap(source)
+        : (ArrayBuffer.isView(source)) ? wrap(source)
+            : (source instanceof ArrayBuffer) ? wrap(source)
+                : (source instanceof SharedArrayBuf) ? wrap(source)
+                    : !(0, compat_js_1.isIterable)(source) ? wrap(source) : source;
+    yield* pump((function* (it) {
+        let r = null;
+        do {
+            r = it.next(yield toArrayBufferView(ArrayCtor, r));
+        } while (!r.done);
+    })(buffers[Symbol.iterator]()));
+    return new ArrayCtor();
+}
+exports.toArrayBufferViewIterator = toArrayBufferViewIterator;
+/** @ignore */ const toInt8ArrayIterator = (input) => toArrayBufferViewIterator(Int8Array, input);
+exports.toInt8ArrayIterator = toInt8ArrayIterator;
+/** @ignore */ const toInt16ArrayIterator = (input) => toArrayBufferViewIterator(Int16Array, input);
+exports.toInt16ArrayIterator = toInt16ArrayIterator;
+/** @ignore */ const toInt32ArrayIterator = (input) => toArrayBufferViewIterator(Int32Array, input);
+exports.toInt32ArrayIterator = toInt32ArrayIterator;
+/** @ignore */ const toUint8ArrayIterator = (input) => toArrayBufferViewIterator(Uint8Array, input);
+exports.toUint8ArrayIterator = toUint8ArrayIterator;
+/** @ignore */ const toUint16ArrayIterator = (input) => toArrayBufferViewIterator(Uint16Array, input);
+exports.toUint16ArrayIterator = toUint16ArrayIterator;
+/** @ignore */ const toUint32ArrayIterator = (input) => toArrayBufferViewIterator(Uint32Array, input);
+exports.toUint32ArrayIterator = toUint32ArrayIterator;
+/** @ignore */ const toFloat32ArrayIterator = (input) => toArrayBufferViewIterator(Float32Array, input);
+exports.toFloat32ArrayIterator = toFloat32ArrayIterator;
+/** @ignore */ const toFloat64ArrayIterator = (input) => toArrayBufferViewIterator(Float64Array, input);
+exports.toFloat64ArrayIterator = toFloat64ArrayIterator;
+/** @ignore */ const toUint8ClampedArrayIterator = (input) => toArrayBufferViewIterator(Uint8ClampedArray, input);
+exports.toUint8ClampedArrayIterator = toUint8ClampedArrayIterator;
+/** @ignore */
+function toArrayBufferViewAsyncIterator(ArrayCtor, source) {
+    return tslib_1.__asyncGenerator(this, arguments, function* toArrayBufferViewAsyncIterator_1() {
+        // if a Promise, unwrap the Promise and iterate the resolved value
+        if ((0, compat_js_1.isPromise)(source)) {
+            return yield tslib_1.__await(yield tslib_1.__await(yield* tslib_1.__asyncDelegator(tslib_1.__asyncValues(toArrayBufferViewAsyncIterator(ArrayCtor, yield tslib_1.__await(source))))));
+        }
+        const wrap = function (x) { return tslib_1.__asyncGenerator(this, arguments, function* () { yield yield tslib_1.__await(yield tslib_1.__await(x)); }); };
+        const emit = function (source) {
+            return tslib_1.__asyncGenerator(this, arguments, function* () {
+                yield tslib_1.__await(yield* tslib_1.__asyncDelegator(tslib_1.__asyncValues(pump((function* (it) {
+                    let r = null;
+                    do {
+                        r = it.next(yield r === null || r === void 0 ? void 0 : r.value);
+                    } while (!r.done);
+                })(source[Symbol.iterator]())))));
+            });
+        };
+        const buffers = (typeof source === 'string') ? wrap(source) // if string, wrap in an AsyncIterableIterator
+            : (ArrayBuffer.isView(source)) ? wrap(source) // if TypedArray, wrap in an AsyncIterableIterator
+                : (source instanceof ArrayBuffer) ? wrap(source) // if ArrayBuffer, wrap in an AsyncIterableIterator
+                    : (source instanceof SharedArrayBuf) ? wrap(source) // if SharedArrayBuffer, wrap in an AsyncIterableIterator
+                        : (0, compat_js_1.isIterable)(source) ? emit(source) // If Iterable, wrap in an AsyncIterableIterator and compose the `next` values
+                            : !(0, compat_js_1.isAsyncIterable)(source) ? wrap(source) // If not an AsyncIterable, treat as a sentinel and wrap in an AsyncIterableIterator
+                                : source; // otherwise if AsyncIterable, use it
+        yield tslib_1.__await(// otherwise if AsyncIterable, use it
+        yield* tslib_1.__asyncDelegator(tslib_1.__asyncValues(pump((function (it) {
+            return tslib_1.__asyncGenerator(this, arguments, function* () {
+                let r = null;
+                do {
+                    r = yield tslib_1.__await(it.next(yield yield tslib_1.__await(toArrayBufferView(ArrayCtor, r))));
+                } while (!r.done);
+            });
+        })(buffers[Symbol.asyncIterator]())))));
+        return yield tslib_1.__await(new ArrayCtor());
+    });
+}
+exports.toArrayBufferViewAsyncIterator = toArrayBufferViewAsyncIterator;
+/** @ignore */ const toInt8ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Int8Array, input);
+exports.toInt8ArrayAsyncIterator = toInt8ArrayAsyncIterator;
+/** @ignore */ const toInt16ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Int16Array, input);
+exports.toInt16ArrayAsyncIterator = toInt16ArrayAsyncIterator;
+/** @ignore */ const toInt32ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Int32Array, input);
+exports.toInt32ArrayAsyncIterator = toInt32ArrayAsyncIterator;
+/** @ignore */ const toUint8ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Uint8Array, input);
+exports.toUint8ArrayAsyncIterator = toUint8ArrayAsyncIterator;
+/** @ignore */ const toUint16ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Uint16Array, input);
+exports.toUint16ArrayAsyncIterator = toUint16ArrayAsyncIterator;
+/** @ignore */ const toUint32ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Uint32Array, input);
+exports.toUint32ArrayAsyncIterator = toUint32ArrayAsyncIterator;
+/** @ignore */ const toFloat32ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Float32Array, input);
+exports.toFloat32ArrayAsyncIterator = toFloat32ArrayAsyncIterator;
+/** @ignore */ const toFloat64ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Float64Array, input);
+exports.toFloat64ArrayAsyncIterator = toFloat64ArrayAsyncIterator;
+/** @ignore */ const toUint8ClampedArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Uint8ClampedArray, input);
+exports.toUint8ClampedArrayAsyncIterator = toUint8ClampedArrayAsyncIterator;
+/** @ignore */
+function rebaseValueOffsets(offset, length, valueOffsets) {
+    // If we have a non-zero offset, create a new offsets array with the values
+    // shifted by the start offset, such that the new start offset is 0
+    if (offset !== 0) {
+        valueOffsets = valueOffsets.slice(0, length + 1);
+        for (let i = -1; ++i <= length;) {
+            valueOffsets[i] += offset;
+        }
+    }
+    return valueOffsets;
+}
+exports.rebaseValueOffsets = rebaseValueOffsets;
+/** @ignore */
+function compareArrayLike(a, b) {
+    let i = 0;
+    const n = a.length;
+    if (n !== b.length) {
+        return false;
+    }
+    if (n > 0) {
+        do {
+            if (a[i] !== b[i]) {
+                return false;
+            }
+        } while (++i < n);
+    }
+    return true;
+}
+exports.compareArrayLike = compareArrayLike;
+
+//# sourceMappingURL=buffer.js.map
diff --git a/igv_component/node_modules/apache-arrow/util/buffer.js.map b/igv_component/node_modules/apache-arrow/util/buffer.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..9c896dbd2f32066c676f4ee9c50c52d9fbfa06f1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/buffer.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/buffer.mjs b/igv_component/node_modules/apache-arrow/util/buffer.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..dd5128db6ef5d57e3a8b8f4a0602cb8c62cf3869
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/buffer.mjs
@@ -0,0 +1,223 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { __asyncDelegator, __asyncGenerator, __asyncValues, __await } from "tslib";
+import { encodeUtf8 } from '../util/utf8.mjs';
+import { isPromise, isIterable, isAsyncIterable, isIteratorResult, isFlatbuffersByteBuffer, BigInt64Array, BigUint64Array } from './compat.mjs';
+/** @ignore */
+const SharedArrayBuf = (typeof SharedArrayBuffer !== 'undefined' ? SharedArrayBuffer : ArrayBuffer);
+/** @ignore */
+function collapseContiguousByteRanges(chunks) {
+    const result = chunks[0] ? [chunks[0]] : [];
+    let xOffset, yOffset, xLen, yLen;
+    for (let x, y, i = 0, j = 0, n = chunks.length; ++i < n;) {
+        x = result[j];
+        y = chunks[i];
+        // continue if x and y don't share the same underlying ArrayBuffer, or if x isn't before y
+        if (!x || !y || x.buffer !== y.buffer || y.byteOffset < x.byteOffset) {
+            y && (result[++j] = y);
+            continue;
+        }
+        ({ byteOffset: xOffset, byteLength: xLen } = x);
+        ({ byteOffset: yOffset, byteLength: yLen } = y);
+        // continue if the byte ranges of x and y aren't contiguous
+        if ((xOffset + xLen) < yOffset || (yOffset + yLen) < xOffset) {
+            y && (result[++j] = y);
+            continue;
+        }
+        result[j] = new Uint8Array(x.buffer, xOffset, yOffset - xOffset + yLen);
+    }
+    return result;
+}
+/** @ignore */
+export function memcpy(target, source, targetByteOffset = 0, sourceByteLength = source.byteLength) {
+    const targetByteLength = target.byteLength;
+    const dst = new Uint8Array(target.buffer, target.byteOffset, targetByteLength);
+    const src = new Uint8Array(source.buffer, source.byteOffset, Math.min(sourceByteLength, targetByteLength));
+    dst.set(src, targetByteOffset);
+    return target;
+}
+/** @ignore */
+export function joinUint8Arrays(chunks, size) {
+    // collapse chunks that share the same underlying ArrayBuffer and whose byte ranges overlap,
+    // to avoid unnecessarily copying the bytes to do this buffer join. This is a common case during
+    // streaming, where we may be reading partial byte ranges out of the same underlying ArrayBuffer
+    const result = collapseContiguousByteRanges(chunks);
+    const byteLength = result.reduce((x, b) => x + b.byteLength, 0);
+    let source, sliced, buffer;
+    let offset = 0, index = -1;
+    const length = Math.min(size || Number.POSITIVE_INFINITY, byteLength);
+    for (const n = result.length; ++index < n;) {
+        source = result[index];
+        sliced = source.subarray(0, Math.min(source.length, length - offset));
+        if (length <= (offset + sliced.length)) {
+            if (sliced.length < source.length) {
+                result[index] = source.subarray(sliced.length);
+            }
+            else if (sliced.length === source.length) {
+                index++;
+            }
+            buffer ? memcpy(buffer, sliced, offset) : (buffer = sliced);
+            break;
+        }
+        memcpy(buffer || (buffer = new Uint8Array(length)), sliced, offset);
+        offset += sliced.length;
+    }
+    return [buffer || new Uint8Array(0), result.slice(index), byteLength - (buffer ? buffer.byteLength : 0)];
+}
+/** @ignore */
+export function toArrayBufferView(ArrayBufferViewCtor, input) {
+    let value = isIteratorResult(input) ? input.value : input;
+    if (value instanceof ArrayBufferViewCtor) {
+        if (ArrayBufferViewCtor === Uint8Array) {
+            // Node's `Buffer` class passes the `instanceof Uint8Array` check, but we need
+            // a real Uint8Array, since Buffer#slice isn't the same as Uint8Array#slice :/
+            return new ArrayBufferViewCtor(value.buffer, value.byteOffset, value.byteLength);
+        }
+        return value;
+    }
+    if (!value) {
+        return new ArrayBufferViewCtor(0);
+    }
+    if (typeof value === 'string') {
+        value = encodeUtf8(value);
+    }
+    if (value instanceof ArrayBuffer) {
+        return new ArrayBufferViewCtor(value);
+    }
+    if (value instanceof SharedArrayBuf) {
+        return new ArrayBufferViewCtor(value);
+    }
+    if (isFlatbuffersByteBuffer(value)) {
+        return toArrayBufferView(ArrayBufferViewCtor, value.bytes());
+    }
+    return !ArrayBuffer.isView(value) ? ArrayBufferViewCtor.from(value) : (value.byteLength <= 0 ? new ArrayBufferViewCtor(0)
+        : new ArrayBufferViewCtor(value.buffer, value.byteOffset, value.byteLength / ArrayBufferViewCtor.BYTES_PER_ELEMENT));
+}
+/** @ignore */ export const toInt8Array = (input) => toArrayBufferView(Int8Array, input);
+/** @ignore */ export const toInt16Array = (input) => toArrayBufferView(Int16Array, input);
+/** @ignore */ export const toInt32Array = (input) => toArrayBufferView(Int32Array, input);
+/** @ignore */ export const toBigInt64Array = (input) => toArrayBufferView(BigInt64Array, input);
+/** @ignore */ export const toUint8Array = (input) => toArrayBufferView(Uint8Array, input);
+/** @ignore */ export const toUint16Array = (input) => toArrayBufferView(Uint16Array, input);
+/** @ignore */ export const toUint32Array = (input) => toArrayBufferView(Uint32Array, input);
+/** @ignore */ export const toBigUint64Array = (input) => toArrayBufferView(BigUint64Array, input);
+/** @ignore */ export const toFloat32Array = (input) => toArrayBufferView(Float32Array, input);
+/** @ignore */ export const toFloat64Array = (input) => toArrayBufferView(Float64Array, input);
+/** @ignore */ export const toUint8ClampedArray = (input) => toArrayBufferView(Uint8ClampedArray, input);
+/** @ignore */
+const pump = (iterator) => { iterator.next(); return iterator; };
+/** @ignore */
+export function* toArrayBufferViewIterator(ArrayCtor, source) {
+    const wrap = function* (x) { yield x; };
+    const buffers = (typeof source === 'string') ? wrap(source)
+        : (ArrayBuffer.isView(source)) ? wrap(source)
+            : (source instanceof ArrayBuffer) ? wrap(source)
+                : (source instanceof SharedArrayBuf) ? wrap(source)
+                    : !isIterable(source) ? wrap(source) : source;
+    yield* pump((function* (it) {
+        let r = null;
+        do {
+            r = it.next(yield toArrayBufferView(ArrayCtor, r));
+        } while (!r.done);
+    })(buffers[Symbol.iterator]()));
+    return new ArrayCtor();
+}
+/** @ignore */ export const toInt8ArrayIterator = (input) => toArrayBufferViewIterator(Int8Array, input);
+/** @ignore */ export const toInt16ArrayIterator = (input) => toArrayBufferViewIterator(Int16Array, input);
+/** @ignore */ export const toInt32ArrayIterator = (input) => toArrayBufferViewIterator(Int32Array, input);
+/** @ignore */ export const toUint8ArrayIterator = (input) => toArrayBufferViewIterator(Uint8Array, input);
+/** @ignore */ export const toUint16ArrayIterator = (input) => toArrayBufferViewIterator(Uint16Array, input);
+/** @ignore */ export const toUint32ArrayIterator = (input) => toArrayBufferViewIterator(Uint32Array, input);
+/** @ignore */ export const toFloat32ArrayIterator = (input) => toArrayBufferViewIterator(Float32Array, input);
+/** @ignore */ export const toFloat64ArrayIterator = (input) => toArrayBufferViewIterator(Float64Array, input);
+/** @ignore */ export const toUint8ClampedArrayIterator = (input) => toArrayBufferViewIterator(Uint8ClampedArray, input);
+/** @ignore */
+export function toArrayBufferViewAsyncIterator(ArrayCtor, source) {
+    return __asyncGenerator(this, arguments, function* toArrayBufferViewAsyncIterator_1() {
+        // if a Promise, unwrap the Promise and iterate the resolved value
+        if (isPromise(source)) {
+            return yield __await(yield __await(yield* __asyncDelegator(__asyncValues(toArrayBufferViewAsyncIterator(ArrayCtor, yield __await(source))))));
+        }
+        const wrap = function (x) { return __asyncGenerator(this, arguments, function* () { yield yield __await(yield __await(x)); }); };
+        const emit = function (source) {
+            return __asyncGenerator(this, arguments, function* () {
+                yield __await(yield* __asyncDelegator(__asyncValues(pump((function* (it) {
+                    let r = null;
+                    do {
+                        r = it.next(yield r === null || r === void 0 ? void 0 : r.value);
+                    } while (!r.done);
+                })(source[Symbol.iterator]())))));
+            });
+        };
+        const buffers = (typeof source === 'string') ? wrap(source) // if string, wrap in an AsyncIterableIterator
+            : (ArrayBuffer.isView(source)) ? wrap(source) // if TypedArray, wrap in an AsyncIterableIterator
+                : (source instanceof ArrayBuffer) ? wrap(source) // if ArrayBuffer, wrap in an AsyncIterableIterator
+                    : (source instanceof SharedArrayBuf) ? wrap(source) // if SharedArrayBuffer, wrap in an AsyncIterableIterator
+                        : isIterable(source) ? emit(source) // If Iterable, wrap in an AsyncIterableIterator and compose the `next` values
+                            : !isAsyncIterable(source) ? wrap(source) // If not an AsyncIterable, treat as a sentinel and wrap in an AsyncIterableIterator
+                                : source; // otherwise if AsyncIterable, use it
+        yield __await(// otherwise if AsyncIterable, use it
+        yield* __asyncDelegator(__asyncValues(pump((function (it) {
+            return __asyncGenerator(this, arguments, function* () {
+                let r = null;
+                do {
+                    r = yield __await(it.next(yield yield __await(toArrayBufferView(ArrayCtor, r))));
+                } while (!r.done);
+            });
+        })(buffers[Symbol.asyncIterator]())))));
+        return yield __await(new ArrayCtor());
+    });
+}
+/** @ignore */ export const toInt8ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Int8Array, input);
+/** @ignore */ export const toInt16ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Int16Array, input);
+/** @ignore */ export const toInt32ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Int32Array, input);
+/** @ignore */ export const toUint8ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Uint8Array, input);
+/** @ignore */ export const toUint16ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Uint16Array, input);
+/** @ignore */ export const toUint32ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Uint32Array, input);
+/** @ignore */ export const toFloat32ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Float32Array, input);
+/** @ignore */ export const toFloat64ArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Float64Array, input);
+/** @ignore */ export const toUint8ClampedArrayAsyncIterator = (input) => toArrayBufferViewAsyncIterator(Uint8ClampedArray, input);
+/** @ignore */
+export function rebaseValueOffsets(offset, length, valueOffsets) {
+    // If we have a non-zero offset, create a new offsets array with the values
+    // shifted by the start offset, such that the new start offset is 0
+    if (offset !== 0) {
+        valueOffsets = valueOffsets.slice(0, length + 1);
+        for (let i = -1; ++i <= length;) {
+            valueOffsets[i] += offset;
+        }
+    }
+    return valueOffsets;
+}
+/** @ignore */
+export function compareArrayLike(a, b) {
+    let i = 0;
+    const n = a.length;
+    if (n !== b.length) {
+        return false;
+    }
+    if (n > 0) {
+        do {
+            if (a[i] !== b[i]) {
+                return false;
+            }
+        } while (++i < n);
+    }
+    return true;
+}
+
+//# sourceMappingURL=buffer.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/util/buffer.mjs.map b/igv_component/node_modules/apache-arrow/util/buffer.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..830c7d366987d76f201060fa04f546304bd27592
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/buffer.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/chunk.d.ts b/igv_component/node_modules/apache-arrow/util/chunk.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..dc4ef56b70a2dea6052ccd35c0e28f3123b616c9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/chunk.d.ts
@@ -0,0 +1,28 @@
+import { Data } from '../data.js';
+import { DataType } from '../type.js';
+/** @ignore */
+export declare class ChunkedIterator<T extends DataType> implements IterableIterator<T['TValue'] | null> {
+    private numChunks;
+    private getChunkIterator;
+    private chunkIndex;
+    private chunkIterator;
+    constructor(numChunks: number, getChunkIterator: (chunkIndex: number) => IterableIterator<T['TValue'] | null>);
+    next(): IteratorResult<T['TValue'] | null>;
+    [Symbol.iterator](): this;
+}
+/** @ignore */
+export declare function computeChunkNullCounts<T extends DataType>(chunks: ReadonlyArray<Data<T>>): number;
+/** @ignore */
+export declare function computeChunkOffsets<T extends DataType>(chunks: ReadonlyArray<Data<T>>): Uint32Array;
+/** @ignore */
+export declare function sliceChunks<T extends DataType>(chunks: ReadonlyArray<Data<T>>, offsets: Uint32Array | Array<number>, begin: number, end: number): Data<T>[];
+/** @ignore */
+export declare function binarySearch<T extends DataType, F extends (chunks: ReadonlyArray<Data<T>>, _1: number, _2: number) => any>(chunks: ReadonlyArray<Data<T>>, offsets: Uint32Array | number[], idx: number, fn: F): any;
+/** @ignore */
+export declare function isChunkedValid<T extends DataType>(data: Data<T>, index: number): boolean;
+/** @ignore */
+export declare function wrapChunkedCall1<T extends DataType>(fn: (c: Data<T>, _1: number) => any): (this: any, index: number) => any;
+/** @ignore */
+export declare function wrapChunkedCall2<T extends DataType>(fn: (c: Data<T>, _1: number, _2: any) => any): (this: any, index: number, value: any) => any;
+/** @ignore */
+export declare function wrapChunkedIndexOf<T extends DataType>(indexOf: (c: Data<T>, e: T['TValue'], o?: number) => any): (this: any, element: T['TValue'], offset?: number) => any;
diff --git a/igv_component/node_modules/apache-arrow/util/chunk.d.ts.map b/igv_component/node_modules/apache-arrow/util/chunk.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..7df89186a6ea51a11a06e08a8d3b81c48e709d29
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/chunk.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/chunk.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,IAAI,EAAE,MAAM,YAAY,CAAC;AAClC,OAAO,EAAE,QAAQ,EAAE,MAAM,YAAY,CAAC;AAEtC,cAAc;AACd,qBAAa,eAAe,CAAC,CAAC,SAAS,QAAQ,CAAE,YAAW,gBAAgB,CAAC,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IAKxF,OAAO,CAAC,SAAS;IACjB,OAAO,CAAC,gBAAgB;IAL5B,OAAO,CAAC,UAAU,CAAK;IACvB,OAAO,CAAC,aAAa,CAAuC;gBAGhD,SAAS,EAAE,MAAU,EACrB,gBAAgB,EAAE,CAAC,UAAU,EAAE,MAAM,KAAK,gBAAgB,CAAC,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IAK1F,IAAI,IAAI,cAAc,CAAC,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IAgB1C,CAAC,MAAM,CAAC,QAAQ,CAAC;CAGpB;AAED,cAAc;AACd,wBAAgB,sBAAsB,CAAC,CAAC,SAAS,QAAQ,EAAE,MAAM,EAAE,aAAa,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC,UAExF;AAED,cAAc;AACd,wBAAgB,mBAAmB,CAAC,CAAC,SAAS,QAAQ,EAAE,MAAM,EAAE,aAAa,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC,eAKrF;AAED,cAAc;AACd,wBAAgB,WAAW,CAAC,CAAC,SAAS,QAAQ,EAAE,MAAM,EAAE,aAAa,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC,EAAE,OAAO,EAAE,WAAW,GAAG,KAAK,CAAC,MAAM,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,GAAG,EAAE,MAAM,aAwB/I;AAED,cAAc;AACd,wBAAgB,YAAY,CACxB,CAAC,SAAS,QAAQ,EAClB,CAAC,SAAS,CAAC,MAAM,EAAE,aAAa,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC,EAAE,EAAE,EAAE,MAAM,EAAE,EAAE,EAAE,MAAM,KAAK,GAAG,EAC3E,MAAM,EAAE,aAAa,CAAC,IAAI,CAAC,CAAC,CAAC,CAAC,EAAE,OAAO,EAAE,WAAW,GAAG,MAAM,EAAE,EAAE,GAAG,EAAE,MAAM,EAAE,EAAE,EAAE,CAAC,OASpF;AAED,cAAc;AACd,wBAAgB,cAAc,CAAC,CAAC,SAAS,QAAQ,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,GAAG,OAAO,CAExF;AAED,cAAc;AACd,wBAAgB,gBAAgB,CAAC,CAAC,SAAS,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,EAAE,EAAE,MAAM,KAAK,GAAG,UAE7D,GAAG,SAAS,MAAM,SAI5C;AAED,cAAc;AACd,wBAAgB,gBAAgB,CAAC,CAAC,SAAS,QAAQ,EAAE,EAAE,EAAE,CAAC,CAAC,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,EAAE,EAAE,MAAM,EAAE,EAAE,EAAE,GAAG,KAAK,GAAG,UAGtE,GAAG,SAAS,MAAM,SAAS,GAAG,SAOxD;AAED,cAAc;AACd,wBAAgB,kBAAkB,CAAC,CAAC,SAAS,QAAQ,EAAE,OAAO,EAAE,CAAC,CAAC,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,CAAC,CAAC,QAAQ,CAAC,EAAE,CAAC,CAAC,EAAE,MAAM,KAAK,GAAG,UAcpF,GAAG,WAAW,CAAC,CAAC,QAAQ,CAAC,WAAW,MAAM,SASpE","file":"chunk.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/chunk.js b/igv_component/node_modules/apache-arrow/util/chunk.js
new file mode 100644
index 0000000000000000000000000000000000000000..7d2401794ba9a23913a7cf06bcb3a6859931950b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/chunk.js
@@ -0,0 +1,155 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.wrapChunkedIndexOf = exports.wrapChunkedCall2 = exports.wrapChunkedCall1 = exports.isChunkedValid = exports.binarySearch = exports.sliceChunks = exports.computeChunkOffsets = exports.computeChunkNullCounts = exports.ChunkedIterator = void 0;
+/** @ignore */
+class ChunkedIterator {
+    constructor(numChunks = 0, getChunkIterator) {
+        this.numChunks = numChunks;
+        this.getChunkIterator = getChunkIterator;
+        this.chunkIndex = 0;
+        this.chunkIterator = this.getChunkIterator(0);
+    }
+    next() {
+        while (this.chunkIndex < this.numChunks) {
+            const next = this.chunkIterator.next();
+            if (!next.done) {
+                return next;
+            }
+            if (++this.chunkIndex < this.numChunks) {
+                this.chunkIterator = this.getChunkIterator(this.chunkIndex);
+            }
+        }
+        return { done: true, value: null };
+    }
+    [Symbol.iterator]() {
+        return this;
+    }
+}
+exports.ChunkedIterator = ChunkedIterator;
+/** @ignore */
+function computeChunkNullCounts(chunks) {
+    return chunks.reduce((nullCount, chunk) => nullCount + chunk.nullCount, 0);
+}
+exports.computeChunkNullCounts = computeChunkNullCounts;
+/** @ignore */
+function computeChunkOffsets(chunks) {
+    return chunks.reduce((offsets, chunk, index) => {
+        offsets[index + 1] = offsets[index] + chunk.length;
+        return offsets;
+    }, new Uint32Array(chunks.length + 1));
+}
+exports.computeChunkOffsets = computeChunkOffsets;
+/** @ignore */
+function sliceChunks(chunks, offsets, begin, end) {
+    const slices = [];
+    for (let i = -1, n = chunks.length; ++i < n;) {
+        const chunk = chunks[i];
+        const offset = offsets[i];
+        const { length } = chunk;
+        // Stop if the child is to the right of the slice boundary
+        if (offset >= end) {
+            break;
+        }
+        // Exclude children to the left of of the slice boundary
+        if (begin >= offset + length) {
+            continue;
+        }
+        // Include entire child if between both left and right boundaries
+        if (offset >= begin && (offset + length) <= end) {
+            slices.push(chunk);
+            continue;
+        }
+        // Include the child slice that overlaps one of the slice boundaries
+        const from = Math.max(0, begin - offset);
+        const to = Math.min(end - offset, length);
+        slices.push(chunk.slice(from, to - from));
+    }
+    if (slices.length === 0) {
+        slices.push(chunks[0].slice(0, 0));
+    }
+    return slices;
+}
+exports.sliceChunks = sliceChunks;
+/** @ignore */
+function binarySearch(chunks, offsets, idx, fn) {
+    let lhs = 0, mid = 0, rhs = offsets.length - 1;
+    do {
+        if (lhs >= rhs - 1) {
+            return (idx < offsets[rhs]) ? fn(chunks, lhs, idx - offsets[lhs]) : null;
+        }
+        mid = lhs + (Math.trunc((rhs - lhs) * .5));
+        idx < offsets[mid] ? (rhs = mid) : (lhs = mid);
+    } while (lhs < rhs);
+}
+exports.binarySearch = binarySearch;
+/** @ignore */
+function isChunkedValid(data, index) {
+    return data.getValid(index);
+}
+exports.isChunkedValid = isChunkedValid;
+/** @ignore */
+function wrapChunkedCall1(fn) {
+    function chunkedFn(chunks, i, j) { return fn(chunks[i], j); }
+    return function (index) {
+        const data = this.data;
+        return binarySearch(data, this._offsets, index, chunkedFn);
+    };
+}
+exports.wrapChunkedCall1 = wrapChunkedCall1;
+/** @ignore */
+function wrapChunkedCall2(fn) {
+    let _2;
+    function chunkedFn(chunks, i, j) { return fn(chunks[i], j, _2); }
+    return function (index, value) {
+        const data = this.data;
+        _2 = value;
+        const result = binarySearch(data, this._offsets, index, chunkedFn);
+        _2 = undefined;
+        return result;
+    };
+}
+exports.wrapChunkedCall2 = wrapChunkedCall2;
+/** @ignore */
+function wrapChunkedIndexOf(indexOf) {
+    let _1;
+    function chunkedIndexOf(data, chunkIndex, fromIndex) {
+        let begin = fromIndex, index = 0, total = 0;
+        for (let i = chunkIndex - 1, n = data.length; ++i < n;) {
+            const chunk = data[i];
+            if (~(index = indexOf(chunk, _1, begin))) {
+                return total + index;
+            }
+            begin = 0;
+            total += chunk.length;
+        }
+        return -1;
+    }
+    return function (element, offset) {
+        _1 = element;
+        const data = this.data;
+        const result = typeof offset !== 'number'
+            ? chunkedIndexOf(data, 0, 0)
+            : binarySearch(data, this._offsets, offset, chunkedIndexOf);
+        _1 = undefined;
+        return result;
+    };
+}
+exports.wrapChunkedIndexOf = wrapChunkedIndexOf;
+
+//# sourceMappingURL=chunk.js.map
diff --git a/igv_component/node_modules/apache-arrow/util/chunk.js.map b/igv_component/node_modules/apache-arrow/util/chunk.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..66ca28b0e7f6b92510f046efd4c11e0786d099bb
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/chunk.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/chunk.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAKrB,cAAc;AACd,MAAa,eAAe;IAIxB,YACY,YAAoB,CAAC,EACrB,gBAA8E;QAD9E,cAAS,GAAT,SAAS,CAAY;QACrB,qBAAgB,GAAhB,gBAAgB,CAA8D;QALlF,eAAU,GAAG,CAAC,CAAC;QAOnB,IAAI,CAAC,aAAa,GAAG,IAAI,CAAC,gBAAgB,CAAC,CAAC,CAAC,CAAC;IAClD,CAAC;IAED,IAAI;QACA,OAAO,IAAI,CAAC,UAAU,GAAG,IAAI,CAAC,SAAS,EAAE;YACrC,MAAM,IAAI,GAAG,IAAI,CAAC,aAAa,CAAC,IAAI,EAAE,CAAC;YAEvC,IAAI,CAAC,IAAI,CAAC,IAAI,EAAE;gBACZ,OAAO,IAAI,CAAC;aACf;YAED,IAAI,EAAE,IAAI,CAAC,UAAU,GAAG,IAAI,CAAC,SAAS,EAAE;gBACpC,IAAI,CAAC,aAAa,GAAG,IAAI,CAAC,gBAAgB,CAAC,IAAI,CAAC,UAAU,CAAC,CAAC;aAC/D;SACJ;QAED,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,IAAI,EAAE,CAAC;IACvC,CAAC;IAED,CAAC,MAAM,CAAC,QAAQ,CAAC;QACb,OAAO,IAAI,CAAC;IAChB,CAAC;CACJ;AA9BD,0CA8BC;AAED,cAAc;AACd,SAAgB,sBAAsB,CAAqB,MAA8B;IACrF,OAAO,MAAM,CAAC,MAAM,CAAC,CAAC,SAAS,EAAE,KAAK,EAAE,EAAE,CAAC,SAAS,GAAG,KAAK,CAAC,SAAS,EAAE,CAAC,CAAC,CAAC;AAC/E,CAAC;AAFD,wDAEC;AAED,cAAc;AACd,SAAgB,mBAAmB,CAAqB,MAA8B;IAClF,OAAO,MAAM,CAAC,MAAM,CAAC,CAAC,OAAO,EAAE,KAAK,EAAE,KAAK,EAAE,EAAE;QAC3C,OAAO,CAAC,KAAK,GAAG,CAAC,CAAC,GAAG,OAAO,CAAC,KAAK,CAAC,GAAG,KAAK,CAAC,MAAM,CAAC;QACnD,OAAO,OAAO,CAAC;IACnB,CAAC,EAAE,IAAI,WAAW,CAAC,MAAM,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC,CAAC;AAC3C,CAAC;AALD,kDAKC;AAED,cAAc;AACd,SAAgB,WAAW,CAAqB,MAA8B,EAAE,OAAoC,EAAE,KAAa,EAAE,GAAW;IAC5I,MAAM,MAAM,GAAc,EAAE,CAAC;IAC7B,KAAK,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,GAAG,MAAM,CAAC,MAAM,EAAE,EAAE,CAAC,GAAG,CAAC,GAAG;QAC1C,MAAM,KAAK,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC;QACxB,MAAM,MAAM,GAAG,OAAO,CAAC,CAAC,CAAC,CAAC;QAC1B,MAAM,EAAE,MAAM,EAAE,GAAG,KAAK,CAAC;QACzB,0DAA0D;QAC1D,IAAI,MAAM,IAAI,GAAG,EAAE;YAAE,MAAM;SAAE;QAC7B,wDAAwD;QACxD,IAAI,KAAK,IAAI,MAAM,GAAG,MAAM,EAAE;YAAE,SAAS;SAAE;QAC3C,iEAAiE;QACjE,IAAI,MAAM,IAAI,KAAK,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,IAAI,GAAG,EAAE;YAC7C,MAAM,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC;YACnB,SAAS;SACZ;QACD,oEAAoE;QACpE,MAAM,IAAI,GAAG,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,KAAK,GAAG,MAAM,CAAC,CAAC;QACzC,MAAM,EAAE,GAAG,IAAI,CAAC,GAAG,CAAC,GAAG,GAAG,MAAM,EAAE,MAAM,CAAC,CAAC;QAC1C,MAAM,CAAC,IAAI,CAAC,KAAK,CAAC,KAAK,CAAC,IAAI,EAAE,EAAE,GAAG,IAAI,CAAC,CAAC,CAAC;KAC7C;IACD,IAAI,MAAM,CAAC,MAAM,KAAK,CAAC,EAAE;QACrB,MAAM,CAAC,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;KACtC;IACD,OAAO,MAAM,CAAC;AAClB,CAAC;AAxBD,kCAwBC;AAED,cAAc;AACd,SAAgB,YAAY,CAG1B,MAA8B,EAAE,OAA+B,EAAE,GAAW,EAAE,EAAK;IACjF,IAAI,GAAG,GAAG,CAAC,EAAE,GAAG,GAAG,CAAC,EAAE,GAAG,GAAG,OAAO,CAAC,MAAM,GAAG,CAAC,CAAC;IAC/C,GAAG;QACC,IAAI,GAAG,IAAI,GAAG,GAAG,CAAC,EAAE;YAChB,OAAO,CAAC,GAAG,GAAG,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,EAAE,CAAC,MAAM,EAAE,GAAG,EAAE,GAAG,GAAG,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;SAC5E;QACD,GAAG,GAAG,GAAG,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC,GAAG,GAAG,GAAG,CAAC,GAAG,EAAE,CAAC,CAAC,CAAC;QAC3C,GAAG,GAAG,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,GAAG,GAAG,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,GAAG,GAAG,GAAG,CAAC,CAAC;KAClD,QAAQ,GAAG,GAAG,GAAG,EAAE;AACxB,CAAC;AAZD,oCAYC;AAED,cAAc;AACd,SAAgB,cAAc,CAAqB,IAAa,EAAE,KAAa;IAC3E,OAAO,IAAI,CAAC,QAAQ,CAAC,KAAK,CAAC,CAAC;AAChC,CAAC;AAFD,wCAEC;AAED,cAAc;AACd,SAAgB,gBAAgB,CAAqB,EAAmC;IACpF,SAAS,SAAS,CAAC,MAA8B,EAAE,CAAS,EAAE,CAAS,IAAI,OAAO,EAAE,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC;IACrG,OAAO,UAAqB,KAAa;QACrC,MAAM,IAAI,GAAG,IAAI,CAAC,IAA8B,CAAC;QACjD,OAAO,YAAY,CAAC,IAAI,EAAE,IAAI,CAAC,QAAQ,EAAE,KAAK,EAAE,SAAS,CAAC,CAAC;IAC/D,CAAC,CAAC;AACN,CAAC;AAND,4CAMC;AAED,cAAc;AACd,SAAgB,gBAAgB,CAAqB,EAA4C;IAC7F,IAAI,EAAO,CAAC;IACZ,SAAS,SAAS,CAAC,MAA8B,EAAE,CAAS,EAAE,CAAS,IAAI,OAAO,EAAE,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,CAAC;IACzG,OAAO,UAAqB,KAAa,EAAE,KAAU;QACjD,MAAM,IAAI,GAAG,IAAI,CAAC,IAA8B,CAAC;QACjD,EAAE,GAAG,KAAK,CAAC;QACX,MAAM,MAAM,GAAG,YAAY,CAAC,IAAI,EAAE,IAAI,CAAC,QAAQ,EAAE,KAAK,EAAE,SAAS,CAAC,CAAC;QACnE,EAAE,GAAG,SAAS,CAAC;QACf,OAAO,MAAM,CAAC;IAClB,CAAC,CAAC;AACN,CAAC;AAVD,4CAUC;AAED,cAAc;AACd,SAAgB,kBAAkB,CAAqB,OAAwD;IAC3G,IAAI,EAAO,CAAC;IACZ,SAAS,cAAc,CAAC,IAA4B,EAAE,UAAkB,EAAE,SAAiB;QACvF,IAAI,KAAK,GAAG,SAAS,EAAE,KAAK,GAAG,CAAC,EAAE,KAAK,GAAG,CAAC,CAAC;QAC5C,KAAK,IAAI,CAAC,GAAG,UAAU,GAAG,CAAC,EAAE,CAAC,GAAG,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,GAAG,CAAC,GAAG;YACpD,MAAM,KAAK,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC;YACtB,IAAI,CAAC,CAAC,KAAK,GAAG,OAAO,CAAC,KAAK,EAAE,EAAE,EAAE,KAAK,CAAC,CAAC,EAAE;gBACtC,OAAO,KAAK,GAAG,KAAK,CAAC;aACxB;YACD,KAAK,GAAG,CAAC,CAAC;YACV,KAAK,IAAI,KAAK,CAAC,MAAM,CAAC;SACzB;QACD,OAAO,CAAC,CAAC,CAAC;IACd,CAAC;IACD,OAAO,UAAqB,OAAoB,EAAE,MAAe;QAC7D,EAAE,GAAG,OAAO,CAAC;QACb,MAAM,IAAI,GAAG,IAAI,CAAC,IAA8B,CAAC;QACjD,MAAM,MAAM,GAAG,OAAO,MAAM,KAAK,QAAQ;YACrC,CAAC,CAAC,cAAc,CAAC,IAAI,EAAE,CAAC,EAAE,CAAC,CAAC;YAC5B,CAAC,CAAC,YAAY,CAAC,IAAI,EAAE,IAAI,CAAC,QAAQ,EAAE,MAAM,EAAE,cAAc,CAAC,CAAC;QAChE,EAAE,GAAG,SAAS,CAAC;QACf,OAAO,MAAM,CAAC;IAClB,CAAC,CAAC;AACN,CAAC;AAvBD,gDAuBC","file":"chunk.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/chunk.mjs b/igv_component/node_modules/apache-arrow/util/chunk.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..cfbfa88c7441d7016ccf46c6f1ec0a0e82b9dc65
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/chunk.mjs
@@ -0,0 +1,143 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+/** @ignore */
+export class ChunkedIterator {
+    constructor(numChunks = 0, getChunkIterator) {
+        this.numChunks = numChunks;
+        this.getChunkIterator = getChunkIterator;
+        this.chunkIndex = 0;
+        this.chunkIterator = this.getChunkIterator(0);
+    }
+    next() {
+        while (this.chunkIndex < this.numChunks) {
+            const next = this.chunkIterator.next();
+            if (!next.done) {
+                return next;
+            }
+            if (++this.chunkIndex < this.numChunks) {
+                this.chunkIterator = this.getChunkIterator(this.chunkIndex);
+            }
+        }
+        return { done: true, value: null };
+    }
+    [Symbol.iterator]() {
+        return this;
+    }
+}
+/** @ignore */
+export function computeChunkNullCounts(chunks) {
+    return chunks.reduce((nullCount, chunk) => nullCount + chunk.nullCount, 0);
+}
+/** @ignore */
+export function computeChunkOffsets(chunks) {
+    return chunks.reduce((offsets, chunk, index) => {
+        offsets[index + 1] = offsets[index] + chunk.length;
+        return offsets;
+    }, new Uint32Array(chunks.length + 1));
+}
+/** @ignore */
+export function sliceChunks(chunks, offsets, begin, end) {
+    const slices = [];
+    for (let i = -1, n = chunks.length; ++i < n;) {
+        const chunk = chunks[i];
+        const offset = offsets[i];
+        const { length } = chunk;
+        // Stop if the child is to the right of the slice boundary
+        if (offset >= end) {
+            break;
+        }
+        // Exclude children to the left of of the slice boundary
+        if (begin >= offset + length) {
+            continue;
+        }
+        // Include entire child if between both left and right boundaries
+        if (offset >= begin && (offset + length) <= end) {
+            slices.push(chunk);
+            continue;
+        }
+        // Include the child slice that overlaps one of the slice boundaries
+        const from = Math.max(0, begin - offset);
+        const to = Math.min(end - offset, length);
+        slices.push(chunk.slice(from, to - from));
+    }
+    if (slices.length === 0) {
+        slices.push(chunks[0].slice(0, 0));
+    }
+    return slices;
+}
+/** @ignore */
+export function binarySearch(chunks, offsets, idx, fn) {
+    let lhs = 0, mid = 0, rhs = offsets.length - 1;
+    do {
+        if (lhs >= rhs - 1) {
+            return (idx < offsets[rhs]) ? fn(chunks, lhs, idx - offsets[lhs]) : null;
+        }
+        mid = lhs + (Math.trunc((rhs - lhs) * .5));
+        idx < offsets[mid] ? (rhs = mid) : (lhs = mid);
+    } while (lhs < rhs);
+}
+/** @ignore */
+export function isChunkedValid(data, index) {
+    return data.getValid(index);
+}
+/** @ignore */
+export function wrapChunkedCall1(fn) {
+    function chunkedFn(chunks, i, j) { return fn(chunks[i], j); }
+    return function (index) {
+        const data = this.data;
+        return binarySearch(data, this._offsets, index, chunkedFn);
+    };
+}
+/** @ignore */
+export function wrapChunkedCall2(fn) {
+    let _2;
+    function chunkedFn(chunks, i, j) { return fn(chunks[i], j, _2); }
+    return function (index, value) {
+        const data = this.data;
+        _2 = value;
+        const result = binarySearch(data, this._offsets, index, chunkedFn);
+        _2 = undefined;
+        return result;
+    };
+}
+/** @ignore */
+export function wrapChunkedIndexOf(indexOf) {
+    let _1;
+    function chunkedIndexOf(data, chunkIndex, fromIndex) {
+        let begin = fromIndex, index = 0, total = 0;
+        for (let i = chunkIndex - 1, n = data.length; ++i < n;) {
+            const chunk = data[i];
+            if (~(index = indexOf(chunk, _1, begin))) {
+                return total + index;
+            }
+            begin = 0;
+            total += chunk.length;
+        }
+        return -1;
+    }
+    return function (element, offset) {
+        _1 = element;
+        const data = this.data;
+        const result = typeof offset !== 'number'
+            ? chunkedIndexOf(data, 0, 0)
+            : binarySearch(data, this._offsets, offset, chunkedIndexOf);
+        _1 = undefined;
+        return result;
+    };
+}
+
+//# sourceMappingURL=chunk.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/util/chunk.mjs.map b/igv_component/node_modules/apache-arrow/util/chunk.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..fa79cb5e382ceb4a7f9e4d210c8f183d95013050
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/chunk.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/chunk.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAKrB,cAAc;AACd,MAAM,OAAO,eAAe;IAIxB,YACY,YAAoB,CAAC,EACrB,gBAA8E;QAD9E,cAAS,GAAT,SAAS,CAAY;QACrB,qBAAgB,GAAhB,gBAAgB,CAA8D;QALlF,eAAU,GAAG,CAAC,CAAC;QAOnB,IAAI,CAAC,aAAa,GAAG,IAAI,CAAC,gBAAgB,CAAC,CAAC,CAAC,CAAC;IAClD,CAAC;IAED,IAAI;QACA,OAAO,IAAI,CAAC,UAAU,GAAG,IAAI,CAAC,SAAS,EAAE;YACrC,MAAM,IAAI,GAAG,IAAI,CAAC,aAAa,CAAC,IAAI,EAAE,CAAC;YAEvC,IAAI,CAAC,IAAI,CAAC,IAAI,EAAE;gBACZ,OAAO,IAAI,CAAC;aACf;YAED,IAAI,EAAE,IAAI,CAAC,UAAU,GAAG,IAAI,CAAC,SAAS,EAAE;gBACpC,IAAI,CAAC,aAAa,GAAG,IAAI,CAAC,gBAAgB,CAAC,IAAI,CAAC,UAAU,CAAC,CAAC;aAC/D;SACJ;QAED,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,IAAI,EAAE,CAAC;IACvC,CAAC;IAED,CAAC,MAAM,CAAC,QAAQ,CAAC;QACb,OAAO,IAAI,CAAC;IAChB,CAAC;CACJ;AAED,cAAc;AACd,MAAM,UAAU,sBAAsB,CAAqB,MAA8B;IACrF,OAAO,MAAM,CAAC,MAAM,CAAC,CAAC,SAAS,EAAE,KAAK,EAAE,EAAE,CAAC,SAAS,GAAG,KAAK,CAAC,SAAS,EAAE,CAAC,CAAC,CAAC;AAC/E,CAAC;AAED,cAAc;AACd,MAAM,UAAU,mBAAmB,CAAqB,MAA8B;IAClF,OAAO,MAAM,CAAC,MAAM,CAAC,CAAC,OAAO,EAAE,KAAK,EAAE,KAAK,EAAE,EAAE;QAC3C,OAAO,CAAC,KAAK,GAAG,CAAC,CAAC,GAAG,OAAO,CAAC,KAAK,CAAC,GAAG,KAAK,CAAC,MAAM,CAAC;QACnD,OAAO,OAAO,CAAC;IACnB,CAAC,EAAE,IAAI,WAAW,CAAC,MAAM,CAAC,MAAM,GAAG,CAAC,CAAC,CAAC,CAAC;AAC3C,CAAC;AAED,cAAc;AACd,MAAM,UAAU,WAAW,CAAqB,MAA8B,EAAE,OAAoC,EAAE,KAAa,EAAE,GAAW;IAC5I,MAAM,MAAM,GAAc,EAAE,CAAC;IAC7B,KAAK,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,GAAG,MAAM,CAAC,MAAM,EAAE,EAAE,CAAC,GAAG,CAAC,GAAG;QAC1C,MAAM,KAAK,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC;QACxB,MAAM,MAAM,GAAG,OAAO,CAAC,CAAC,CAAC,CAAC;QAC1B,MAAM,EAAE,MAAM,EAAE,GAAG,KAAK,CAAC;QACzB,0DAA0D;QAC1D,IAAI,MAAM,IAAI,GAAG,EAAE;YAAE,MAAM;SAAE;QAC7B,wDAAwD;QACxD,IAAI,KAAK,IAAI,MAAM,GAAG,MAAM,EAAE;YAAE,SAAS;SAAE;QAC3C,iEAAiE;QACjE,IAAI,MAAM,IAAI,KAAK,IAAI,CAAC,MAAM,GAAG,MAAM,CAAC,IAAI,GAAG,EAAE;YAC7C,MAAM,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC;YACnB,SAAS;SACZ;QACD,oEAAoE;QACpE,MAAM,IAAI,GAAG,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,KAAK,GAAG,MAAM,CAAC,CAAC;QACzC,MAAM,EAAE,GAAG,IAAI,CAAC,GAAG,CAAC,GAAG,GAAG,MAAM,EAAE,MAAM,CAAC,CAAC;QAC1C,MAAM,CAAC,IAAI,CAAC,KAAK,CAAC,KAAK,CAAC,IAAI,EAAE,EAAE,GAAG,IAAI,CAAC,CAAC,CAAC;KAC7C;IACD,IAAI,MAAM,CAAC,MAAM,KAAK,CAAC,EAAE;QACrB,MAAM,CAAC,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC;KACtC;IACD,OAAO,MAAM,CAAC;AAClB,CAAC;AAED,cAAc;AACd,MAAM,UAAU,YAAY,CAG1B,MAA8B,EAAE,OAA+B,EAAE,GAAW,EAAE,EAAK;IACjF,IAAI,GAAG,GAAG,CAAC,EAAE,GAAG,GAAG,CAAC,EAAE,GAAG,GAAG,OAAO,CAAC,MAAM,GAAG,CAAC,CAAC;IAC/C,GAAG;QACC,IAAI,GAAG,IAAI,GAAG,GAAG,CAAC,EAAE;YAChB,OAAO,CAAC,GAAG,GAAG,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,EAAE,CAAC,MAAM,EAAE,GAAG,EAAE,GAAG,GAAG,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC;SAC5E;QACD,GAAG,GAAG,GAAG,GAAG,CAAC,IAAI,CAAC,KAAK,CAAC,CAAC,GAAG,GAAG,GAAG,CAAC,GAAG,EAAE,CAAC,CAAC,CAAC;QAC3C,GAAG,GAAG,OAAO,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,GAAG,GAAG,GAAG,CAAC,CAAC,CAAC,CAAC,CAAC,GAAG,GAAG,GAAG,CAAC,CAAC;KAClD,QAAQ,GAAG,GAAG,GAAG,EAAE;AACxB,CAAC;AAED,cAAc;AACd,MAAM,UAAU,cAAc,CAAqB,IAAa,EAAE,KAAa;IAC3E,OAAO,IAAI,CAAC,QAAQ,CAAC,KAAK,CAAC,CAAC;AAChC,CAAC;AAED,cAAc;AACd,MAAM,UAAU,gBAAgB,CAAqB,EAAmC;IACpF,SAAS,SAAS,CAAC,MAA8B,EAAE,CAAS,EAAE,CAAS,IAAI,OAAO,EAAE,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC;IACrG,OAAO,UAAqB,KAAa;QACrC,MAAM,IAAI,GAAG,IAAI,CAAC,IAA8B,CAAC;QACjD,OAAO,YAAY,CAAC,IAAI,EAAE,IAAI,CAAC,QAAQ,EAAE,KAAK,EAAE,SAAS,CAAC,CAAC;IAC/D,CAAC,CAAC;AACN,CAAC;AAED,cAAc;AACd,MAAM,UAAU,gBAAgB,CAAqB,EAA4C;IAC7F,IAAI,EAAO,CAAC;IACZ,SAAS,SAAS,CAAC,MAA8B,EAAE,CAAS,EAAE,CAAS,IAAI,OAAO,EAAE,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,CAAC;IACzG,OAAO,UAAqB,KAAa,EAAE,KAAU;QACjD,MAAM,IAAI,GAAG,IAAI,CAAC,IAA8B,CAAC;QACjD,EAAE,GAAG,KAAK,CAAC;QACX,MAAM,MAAM,GAAG,YAAY,CAAC,IAAI,EAAE,IAAI,CAAC,QAAQ,EAAE,KAAK,EAAE,SAAS,CAAC,CAAC;QACnE,EAAE,GAAG,SAAS,CAAC;QACf,OAAO,MAAM,CAAC;IAClB,CAAC,CAAC;AACN,CAAC;AAED,cAAc;AACd,MAAM,UAAU,kBAAkB,CAAqB,OAAwD;IAC3G,IAAI,EAAO,CAAC;IACZ,SAAS,cAAc,CAAC,IAA4B,EAAE,UAAkB,EAAE,SAAiB;QACvF,IAAI,KAAK,GAAG,SAAS,EAAE,KAAK,GAAG,CAAC,EAAE,KAAK,GAAG,CAAC,CAAC;QAC5C,KAAK,IAAI,CAAC,GAAG,UAAU,GAAG,CAAC,EAAE,CAAC,GAAG,IAAI,CAAC,MAAM,EAAE,EAAE,CAAC,GAAG,CAAC,GAAG;YACpD,MAAM,KAAK,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC;YACtB,IAAI,CAAC,CAAC,KAAK,GAAG,OAAO,CAAC,KAAK,EAAE,EAAE,EAAE,KAAK,CAAC,CAAC,EAAE;gBACtC,OAAO,KAAK,GAAG,KAAK,CAAC;aACxB;YACD,KAAK,GAAG,CAAC,CAAC;YACV,KAAK,IAAI,KAAK,CAAC,MAAM,CAAC;SACzB;QACD,OAAO,CAAC,CAAC,CAAC;IACd,CAAC;IACD,OAAO,UAAqB,OAAoB,EAAE,MAAe;QAC7D,EAAE,GAAG,OAAO,CAAC;QACb,MAAM,IAAI,GAAG,IAAI,CAAC,IAA8B,CAAC;QACjD,MAAM,MAAM,GAAG,OAAO,MAAM,KAAK,QAAQ;YACrC,CAAC,CAAC,cAAc,CAAC,IAAI,EAAE,CAAC,EAAE,CAAC,CAAC;YAC5B,CAAC,CAAC,YAAY,CAAC,IAAI,EAAE,IAAI,CAAC,QAAQ,EAAE,MAAM,EAAE,cAAc,CAAC,CAAC;QAChE,EAAE,GAAG,SAAS,CAAC;QACf,OAAO,MAAM,CAAC;IAClB,CAAC,CAAC;AACN,CAAC","file":"chunk.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/compat.d.ts b/igv_component/node_modules/apache-arrow/util/compat.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e93596f45617e11b4d4938dd1d639161caa0415d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/compat.d.ts
@@ -0,0 +1,59 @@
+import { ArrowJSONLike } from '../io/interfaces.js';
+/** @ignore */
+export interface Subscription {
+    unsubscribe: () => void;
+}
+/** @ignore */
+export interface Observer<T> {
+    closed?: boolean;
+    next: (value: T) => void;
+    error: (err: any) => void;
+    complete: () => void;
+}
+/** @ignore */
+export interface Observable<T> {
+    subscribe: (observer: Observer<T>) => Subscription;
+}
+/** @ignore */
+declare const BigIntCtor: BigIntConstructor, BigIntAvailable: boolean;
+/** @ignore */
+declare const BigInt64ArrayCtor: BigInt64ArrayConstructor, BigInt64ArrayAvailable: boolean;
+/** @ignore */
+declare const BigUint64ArrayCtor: BigUint64ArrayConstructor, BigUint64ArrayAvailable: boolean;
+export { BigIntCtor as BigInt, BigIntAvailable };
+export { BigInt64ArrayCtor as BigInt64Array, BigInt64ArrayAvailable };
+export { BigUint64ArrayCtor as BigUint64Array, BigUint64ArrayAvailable };
+/** @ignore */
+export declare const isObject: (x: any) => x is Object;
+/** @ignore */
+export declare const isPromise: <T = any>(x: any) => x is PromiseLike<T>;
+/** @ignore */
+export declare const isObservable: <T = any>(x: any) => x is Observable<T>;
+/** @ignore */
+export declare const isIterable: <T = any>(x: any) => x is Iterable<T>;
+/** @ignore */
+export declare const isAsyncIterable: <T = any>(x: any) => x is AsyncIterable<T>;
+/** @ignore */
+export declare const isArrowJSON: (x: any) => x is ArrowJSONLike;
+/** @ignore */
+export declare const isArrayLike: <T = any>(x: any) => x is ArrayLike<T>;
+/** @ignore */
+export declare const isIteratorResult: <T = any>(x: any) => x is IteratorResult<T, any>;
+/** @ignore */
+export declare const isUnderlyingSink: <T = any>(x: any) => x is UnderlyingSink<T>;
+/** @ignore */
+export declare const isFileHandle: (x: any) => x is import("fs/promises").FileHandle;
+/** @ignore */
+export declare const isFSReadStream: (x: any) => x is import("fs").ReadStream;
+/** @ignore */
+export declare const isFetchResponse: (x: any) => x is Response;
+/** @ignore */
+export declare const isWritableDOMStream: <T = any>(x: any) => x is WritableStream<T>;
+/** @ignore */
+export declare const isReadableDOMStream: <T = any>(x: any) => x is ReadableStream<T>;
+/** @ignore */
+export declare const isWritableNodeStream: (x: any) => x is NodeJS.WritableStream;
+/** @ignore */
+export declare const isReadableNodeStream: (x: any) => x is NodeJS.ReadableStream;
+/** @ignore */
+export declare const isFlatbuffersByteBuffer: (x: any) => x is import("flatbuffers").ByteBuffer;
diff --git a/igv_component/node_modules/apache-arrow/util/compat.d.ts.map b/igv_component/node_modules/apache-arrow/util/compat.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..a70ddde0012ae9804e6d4ed99f686db2457bade2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/compat.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/compat.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAmB,aAAa,EAAE,MAAM,qBAAqB,CAAC;AASrE,cAAc;AACd,MAAM,WAAW,YAAY;IACzB,WAAW,EAAE,MAAM,IAAI,CAAC;CAC3B;AAED,cAAc;AACd,MAAM,WAAW,QAAQ,CAAC,CAAC;IACvB,MAAM,CAAC,EAAE,OAAO,CAAC;IACjB,IAAI,EAAE,CAAC,KAAK,EAAE,CAAC,KAAK,IAAI,CAAC;IACzB,KAAK,EAAE,CAAC,GAAG,EAAE,GAAG,KAAK,IAAI,CAAC;IAC1B,QAAQ,EAAE,MAAM,IAAI,CAAC;CACxB;AAED,cAAc;AACd,MAAM,WAAW,UAAU,CAAC,CAAC;IACzB,SAAS,EAAE,CAAC,QAAQ,EAAE,QAAQ,CAAC,CAAC,CAAC,KAAK,YAAY,CAAC;CACtD;AAED,cAAc;AACd,QAAA,MAAO,UAAU,qBAAE,eAAe,SAME,CAAC;AAErC,cAAc;AACd,QAAA,MAAO,iBAAiB,4BAAE,sBAAsB,SASL,CAAC;AAE5C,cAAc;AACd,QAAA,MAAO,kBAAkB,6BAAE,uBAAuB,SASN,CAAC;AAE7C,OAAO,EAAE,UAAU,IAAI,MAAM,EAAE,eAAe,EAAE,CAAC;AACjD,OAAO,EAAE,iBAAiB,IAAI,aAAa,EAAE,sBAAsB,EAAE,CAAC;AACtE,OAAO,EAAE,kBAAkB,IAAI,cAAc,EAAE,uBAAuB,EAAE,CAAC;AAKzE,cAAc;AAEd,eAAO,MAAM,QAAQ,MAAO,GAAG,gBAA8C,CAAC;AAE9E,cAAc;AACd,eAAO,MAAM,SAAS,eAAgB,GAAG,wBAExC,CAAC;AAEF,cAAc;AACd,eAAO,MAAM,YAAY,eAAgB,GAAG,uBAE3C,CAAC;AAEF,cAAc;AACd,eAAO,MAAM,UAAU,eAAgB,GAAG,qBAEzC,CAAC;AAEF,cAAc;AACd,eAAO,MAAM,eAAe,eAAgB,GAAG,0BAE9C,CAAC;AAEF,cAAc;AACd,eAAO,MAAM,WAAW,MAAO,GAAG,uBAEjC,CAAC;AAEF,cAAc;AACd,eAAO,MAAM,WAAW,eAAgB,GAAG,sBAE1C,CAAC;AAEF,cAAc;AACd,eAAO,MAAM,gBAAgB,eAAgB,GAAG,gCAE/C,CAAC;AAEF,cAAc;AACd,eAAO,MAAM,gBAAgB,eAAgB,GAAG,2BAM/C,CAAC;AAEF,cAAc;AACd,eAAO,MAAM,YAAY,MAAO,GAAG,0CAElC,CAAC;AAEF,cAAc;AACd,eAAO,MAAM,cAAc,MAAO,GAAG,iCAEpC,CAAC;AAEF,cAAc;AACd,eAAO,MAAM,eAAe,MAAO,GAAG,kBAErC,CAAC;AAIF,cAAc;AACd,eAAO,MAAM,mBAAmB,eAAgB,GAAG,2BAKlD,CAAC;AAEF,cAAc;AACd,eAAO,MAAM,mBAAmB,eAAgB,GAAG,2BAKlD,CAAC;AAEF,cAAc;AACd,eAAO,MAAM,oBAAoB,MAAO,GAAG,+BAM1C,CAAC;AAEF,cAAc;AACd,eAAO,MAAM,oBAAoB,MAAO,GAAG,+BAM1C,CAAC;AAEF,cAAc;AACd,eAAO,MAAM,uBAAuB,MAAO,GAAG,0CAS7C,CAAC","file":"compat.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/compat.js b/igv_component/node_modules/apache-arrow/util/compat.js
new file mode 100644
index 0000000000000000000000000000000000000000..1a32de3d73a81f4d6c63b05ffba60436c681935a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/compat.js
@@ -0,0 +1,170 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.isFlatbuffersByteBuffer = exports.isReadableNodeStream = exports.isWritableNodeStream = exports.isReadableDOMStream = exports.isWritableDOMStream = exports.isFetchResponse = exports.isFSReadStream = exports.isFileHandle = exports.isUnderlyingSink = exports.isIteratorResult = exports.isArrayLike = exports.isArrowJSON = exports.isAsyncIterable = exports.isIterable = exports.isObservable = exports.isPromise = exports.isObject = exports.BigUint64ArrayAvailable = exports.BigUint64Array = exports.BigInt64ArrayAvailable = exports.BigInt64Array = exports.BigIntAvailable = exports.BigInt = void 0;
+/** @ignore */
+const [BigIntCtor, BigIntAvailable] = (() => {
+    const BigIntUnavailableError = () => { throw new Error('BigInt is not available in this environment'); };
+    function BigIntUnavailable() { throw BigIntUnavailableError(); }
+    BigIntUnavailable.asIntN = () => { throw BigIntUnavailableError(); };
+    BigIntUnavailable.asUintN = () => { throw BigIntUnavailableError(); };
+    return typeof BigInt !== 'undefined' ? [BigInt, true] : [BigIntUnavailable, false];
+})();
+exports.BigInt = BigIntCtor;
+exports.BigIntAvailable = BigIntAvailable;
+/** @ignore */
+const [BigInt64ArrayCtor, BigInt64ArrayAvailable] = (() => {
+    const BigInt64ArrayUnavailableError = () => { throw new Error('BigInt64Array is not available in this environment'); };
+    class BigInt64ArrayUnavailable {
+        static get BYTES_PER_ELEMENT() { return 8; }
+        static of() { throw BigInt64ArrayUnavailableError(); }
+        static from() { throw BigInt64ArrayUnavailableError(); }
+        constructor() { throw BigInt64ArrayUnavailableError(); }
+    }
+    return typeof BigInt64Array !== 'undefined' ? [BigInt64Array, true] : [BigInt64ArrayUnavailable, false];
+})();
+exports.BigInt64Array = BigInt64ArrayCtor;
+exports.BigInt64ArrayAvailable = BigInt64ArrayAvailable;
+/** @ignore */
+const [BigUint64ArrayCtor, BigUint64ArrayAvailable] = (() => {
+    const BigUint64ArrayUnavailableError = () => { throw new Error('BigUint64Array is not available in this environment'); };
+    class BigUint64ArrayUnavailable {
+        static get BYTES_PER_ELEMENT() { return 8; }
+        static of() { throw BigUint64ArrayUnavailableError(); }
+        static from() { throw BigUint64ArrayUnavailableError(); }
+        constructor() { throw BigUint64ArrayUnavailableError(); }
+    }
+    return typeof BigUint64Array !== 'undefined' ? [BigUint64Array, true] : [BigUint64ArrayUnavailable, false];
+})();
+exports.BigUint64Array = BigUint64ArrayCtor;
+exports.BigUint64ArrayAvailable = BigUint64ArrayAvailable;
+/** @ignore */ const isNumber = (x) => typeof x === 'number';
+/** @ignore */ const isBoolean = (x) => typeof x === 'boolean';
+/** @ignore */ const isFunction = (x) => typeof x === 'function';
+/** @ignore */
+// eslint-disable-next-line @typescript-eslint/ban-types
+const isObject = (x) => x != null && Object(x) === x;
+exports.isObject = isObject;
+/** @ignore */
+const isPromise = (x) => {
+    return (0, exports.isObject)(x) && isFunction(x.then);
+};
+exports.isPromise = isPromise;
+/** @ignore */
+const isObservable = (x) => {
+    return (0, exports.isObject)(x) && isFunction(x.subscribe);
+};
+exports.isObservable = isObservable;
+/** @ignore */
+const isIterable = (x) => {
+    return (0, exports.isObject)(x) && isFunction(x[Symbol.iterator]);
+};
+exports.isIterable = isIterable;
+/** @ignore */
+const isAsyncIterable = (x) => {
+    return (0, exports.isObject)(x) && isFunction(x[Symbol.asyncIterator]);
+};
+exports.isAsyncIterable = isAsyncIterable;
+/** @ignore */
+const isArrowJSON = (x) => {
+    return (0, exports.isObject)(x) && (0, exports.isObject)(x['schema']);
+};
+exports.isArrowJSON = isArrowJSON;
+/** @ignore */
+const isArrayLike = (x) => {
+    return (0, exports.isObject)(x) && isNumber(x['length']);
+};
+exports.isArrayLike = isArrayLike;
+/** @ignore */
+const isIteratorResult = (x) => {
+    return (0, exports.isObject)(x) && ('done' in x) && ('value' in x);
+};
+exports.isIteratorResult = isIteratorResult;
+/** @ignore */
+const isUnderlyingSink = (x) => {
+    return (0, exports.isObject)(x) &&
+        isFunction(x['abort']) &&
+        isFunction(x['close']) &&
+        isFunction(x['start']) &&
+        isFunction(x['write']);
+};
+exports.isUnderlyingSink = isUnderlyingSink;
+/** @ignore */
+const isFileHandle = (x) => {
+    return (0, exports.isObject)(x) && isFunction(x['stat']) && isNumber(x['fd']);
+};
+exports.isFileHandle = isFileHandle;
+/** @ignore */
+const isFSReadStream = (x) => {
+    return (0, exports.isReadableNodeStream)(x) && isNumber(x['bytesRead']);
+};
+exports.isFSReadStream = isFSReadStream;
+/** @ignore */
+const isFetchResponse = (x) => {
+    return (0, exports.isObject)(x) && (0, exports.isReadableDOMStream)(x['body']);
+};
+exports.isFetchResponse = isFetchResponse;
+const isReadableInterop = (x) => ('_getDOMStream' in x && '_getNodeStream' in x);
+/** @ignore */
+const isWritableDOMStream = (x) => {
+    return (0, exports.isObject)(x) &&
+        isFunction(x['abort']) &&
+        isFunction(x['getWriter']) &&
+        !isReadableInterop(x);
+};
+exports.isWritableDOMStream = isWritableDOMStream;
+/** @ignore */
+const isReadableDOMStream = (x) => {
+    return (0, exports.isObject)(x) &&
+        isFunction(x['cancel']) &&
+        isFunction(x['getReader']) &&
+        !isReadableInterop(x);
+};
+exports.isReadableDOMStream = isReadableDOMStream;
+/** @ignore */
+const isWritableNodeStream = (x) => {
+    return (0, exports.isObject)(x) &&
+        isFunction(x['end']) &&
+        isFunction(x['write']) &&
+        isBoolean(x['writable']) &&
+        !isReadableInterop(x);
+};
+exports.isWritableNodeStream = isWritableNodeStream;
+/** @ignore */
+const isReadableNodeStream = (x) => {
+    return (0, exports.isObject)(x) &&
+        isFunction(x['read']) &&
+        isFunction(x['pipe']) &&
+        isBoolean(x['readable']) &&
+        !isReadableInterop(x);
+};
+exports.isReadableNodeStream = isReadableNodeStream;
+/** @ignore */
+const isFlatbuffersByteBuffer = (x) => {
+    return (0, exports.isObject)(x) &&
+        isFunction(x['clear']) &&
+        isFunction(x['bytes']) &&
+        isFunction(x['position']) &&
+        isFunction(x['setPosition']) &&
+        isFunction(x['capacity']) &&
+        isFunction(x['getBufferIdentifier']) &&
+        isFunction(x['createLong']);
+};
+exports.isFlatbuffersByteBuffer = isFlatbuffersByteBuffer;
+
+//# sourceMappingURL=compat.js.map
diff --git a/igv_component/node_modules/apache-arrow/util/compat.js.map b/igv_component/node_modules/apache-arrow/util/compat.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..5dd8c5dfd8c06809c8bc02f871c5d45e037ed040
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/compat.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/compat.mjs b/igv_component/node_modules/apache-arrow/util/compat.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..032ec6a53608a64e22a416f7651a3c0b76deb73a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/compat.mjs
@@ -0,0 +1,147 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+/** @ignore */
+const [BigIntCtor, BigIntAvailable] = (() => {
+    const BigIntUnavailableError = () => { throw new Error('BigInt is not available in this environment'); };
+    function BigIntUnavailable() { throw BigIntUnavailableError(); }
+    BigIntUnavailable.asIntN = () => { throw BigIntUnavailableError(); };
+    BigIntUnavailable.asUintN = () => { throw BigIntUnavailableError(); };
+    return typeof BigInt !== 'undefined' ? [BigInt, true] : [BigIntUnavailable, false];
+})();
+/** @ignore */
+const [BigInt64ArrayCtor, BigInt64ArrayAvailable] = (() => {
+    const BigInt64ArrayUnavailableError = () => { throw new Error('BigInt64Array is not available in this environment'); };
+    class BigInt64ArrayUnavailable {
+        static get BYTES_PER_ELEMENT() { return 8; }
+        static of() { throw BigInt64ArrayUnavailableError(); }
+        static from() { throw BigInt64ArrayUnavailableError(); }
+        constructor() { throw BigInt64ArrayUnavailableError(); }
+    }
+    return typeof BigInt64Array !== 'undefined' ? [BigInt64Array, true] : [BigInt64ArrayUnavailable, false];
+})();
+/** @ignore */
+const [BigUint64ArrayCtor, BigUint64ArrayAvailable] = (() => {
+    const BigUint64ArrayUnavailableError = () => { throw new Error('BigUint64Array is not available in this environment'); };
+    class BigUint64ArrayUnavailable {
+        static get BYTES_PER_ELEMENT() { return 8; }
+        static of() { throw BigUint64ArrayUnavailableError(); }
+        static from() { throw BigUint64ArrayUnavailableError(); }
+        constructor() { throw BigUint64ArrayUnavailableError(); }
+    }
+    return typeof BigUint64Array !== 'undefined' ? [BigUint64Array, true] : [BigUint64ArrayUnavailable, false];
+})();
+export { BigIntCtor as BigInt, BigIntAvailable };
+export { BigInt64ArrayCtor as BigInt64Array, BigInt64ArrayAvailable };
+export { BigUint64ArrayCtor as BigUint64Array, BigUint64ArrayAvailable };
+/** @ignore */ const isNumber = (x) => typeof x === 'number';
+/** @ignore */ const isBoolean = (x) => typeof x === 'boolean';
+/** @ignore */ const isFunction = (x) => typeof x === 'function';
+/** @ignore */
+// eslint-disable-next-line @typescript-eslint/ban-types
+export const isObject = (x) => x != null && Object(x) === x;
+/** @ignore */
+export const isPromise = (x) => {
+    return isObject(x) && isFunction(x.then);
+};
+/** @ignore */
+export const isObservable = (x) => {
+    return isObject(x) && isFunction(x.subscribe);
+};
+/** @ignore */
+export const isIterable = (x) => {
+    return isObject(x) && isFunction(x[Symbol.iterator]);
+};
+/** @ignore */
+export const isAsyncIterable = (x) => {
+    return isObject(x) && isFunction(x[Symbol.asyncIterator]);
+};
+/** @ignore */
+export const isArrowJSON = (x) => {
+    return isObject(x) && isObject(x['schema']);
+};
+/** @ignore */
+export const isArrayLike = (x) => {
+    return isObject(x) && isNumber(x['length']);
+};
+/** @ignore */
+export const isIteratorResult = (x) => {
+    return isObject(x) && ('done' in x) && ('value' in x);
+};
+/** @ignore */
+export const isUnderlyingSink = (x) => {
+    return isObject(x) &&
+        isFunction(x['abort']) &&
+        isFunction(x['close']) &&
+        isFunction(x['start']) &&
+        isFunction(x['write']);
+};
+/** @ignore */
+export const isFileHandle = (x) => {
+    return isObject(x) && isFunction(x['stat']) && isNumber(x['fd']);
+};
+/** @ignore */
+export const isFSReadStream = (x) => {
+    return isReadableNodeStream(x) && isNumber(x['bytesRead']);
+};
+/** @ignore */
+export const isFetchResponse = (x) => {
+    return isObject(x) && isReadableDOMStream(x['body']);
+};
+const isReadableInterop = (x) => ('_getDOMStream' in x && '_getNodeStream' in x);
+/** @ignore */
+export const isWritableDOMStream = (x) => {
+    return isObject(x) &&
+        isFunction(x['abort']) &&
+        isFunction(x['getWriter']) &&
+        !isReadableInterop(x);
+};
+/** @ignore */
+export const isReadableDOMStream = (x) => {
+    return isObject(x) &&
+        isFunction(x['cancel']) &&
+        isFunction(x['getReader']) &&
+        !isReadableInterop(x);
+};
+/** @ignore */
+export const isWritableNodeStream = (x) => {
+    return isObject(x) &&
+        isFunction(x['end']) &&
+        isFunction(x['write']) &&
+        isBoolean(x['writable']) &&
+        !isReadableInterop(x);
+};
+/** @ignore */
+export const isReadableNodeStream = (x) => {
+    return isObject(x) &&
+        isFunction(x['read']) &&
+        isFunction(x['pipe']) &&
+        isBoolean(x['readable']) &&
+        !isReadableInterop(x);
+};
+/** @ignore */
+export const isFlatbuffersByteBuffer = (x) => {
+    return isObject(x) &&
+        isFunction(x['clear']) &&
+        isFunction(x['bytes']) &&
+        isFunction(x['position']) &&
+        isFunction(x['setPosition']) &&
+        isFunction(x['capacity']) &&
+        isFunction(x['getBufferIdentifier']) &&
+        isFunction(x['createLong']);
+};
+
+//# sourceMappingURL=compat.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/util/compat.mjs.map b/igv_component/node_modules/apache-arrow/util/compat.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..4a53d53a4f824647c20fd75cf9af3ba0fd7767ec
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/compat.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/compat.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AA6BrB,cAAc;AACd,MAAM,CAAC,UAAU,EAAE,eAAe,CAAC,GAAG,CAAC,GAAG,EAAE;IACxC,MAAM,sBAAsB,GAAG,GAAG,EAAE,GAAG,MAAM,IAAI,KAAK,CAAC,6CAA6C,CAAC,CAAC,CAAC,CAAC,CAAC;IACzG,SAAS,iBAAiB,KAAK,MAAM,sBAAsB,EAAE,CAAC,CAAC,CAAC;IAChE,iBAAiB,CAAC,MAAM,GAAG,GAAG,EAAE,GAAG,MAAM,sBAAsB,EAAE,CAAC,CAAC,CAAC,CAAC;IACrE,iBAAiB,CAAC,OAAO,GAAG,GAAG,EAAE,GAAG,MAAM,sBAAsB,EAAE,CAAC,CAAC,CAAC,CAAC;IACtE,OAAO,OAAO,MAAM,KAAK,WAAW,CAAC,CAAC,CAAC,CAAC,MAAM,EAAE,IAAI,CAAC,CAAC,CAAC,CAAC,CAAM,iBAAiB,EAAE,KAAK,CAAC,CAAC;AAC5F,CAAC,CAAC,EAAkC,CAAC;AAErC,cAAc;AACd,MAAM,CAAC,iBAAiB,EAAE,sBAAsB,CAAC,GAAG,CAAC,GAAG,EAAE;IACtD,MAAM,6BAA6B,GAAG,GAAG,EAAE,GAAG,MAAM,IAAI,KAAK,CAAC,oDAAoD,CAAC,CAAC,CAAC,CAAC,CAAC;IACvH,MAAM,wBAAwB;QAC1B,MAAM,KAAK,iBAAiB,KAAK,OAAO,CAAC,CAAC,CAAC,CAAC;QAC5C,MAAM,CAAC,EAAE,KAAK,MAAM,6BAA6B,EAAE,CAAC,CAAC,CAAC;QACtD,MAAM,CAAC,IAAI,KAAK,MAAM,6BAA6B,EAAE,CAAC,CAAC,CAAC;QACxD,gBAAgB,MAAM,6BAA6B,EAAE,CAAC,CAAC,CAAC;KAC3D;IACD,OAAO,OAAO,aAAa,KAAK,WAAW,CAAC,CAAC,CAAC,CAAC,aAAa,EAAE,IAAI,CAAC,CAAC,CAAC,CAAC,CAAM,wBAAwB,EAAE,KAAK,CAAC,CAAC;AACjH,CAAC,CAAC,EAAyC,CAAC;AAE5C,cAAc;AACd,MAAM,CAAC,kBAAkB,EAAE,uBAAuB,CAAC,GAAG,CAAC,GAAG,EAAE;IACxD,MAAM,8BAA8B,GAAG,GAAG,EAAE,GAAG,MAAM,IAAI,KAAK,CAAC,qDAAqD,CAAC,CAAC,CAAC,CAAC,CAAC;IACzH,MAAM,yBAAyB;QAC3B,MAAM,KAAK,iBAAiB,KAAK,OAAO,CAAC,CAAC,CAAC,CAAC;QAC5C,MAAM,CAAC,EAAE,KAAK,MAAM,8BAA8B,EAAE,CAAC,CAAC,CAAC;QACvD,MAAM,CAAC,IAAI,KAAK,MAAM,8BAA8B,EAAE,CAAC,CAAC,CAAC;QACzD,gBAAgB,MAAM,8BAA8B,EAAE,CAAC,CAAC,CAAC;KAC5D;IACD,OAAO,OAAO,cAAc,KAAK,WAAW,CAAC,CAAC,CAAC,CAAC,cAAc,EAAE,IAAI,CAAC,CAAC,CAAC,CAAC,CAAM,yBAAyB,EAAE,KAAK,CAAC,CAAC;AACpH,CAAC,CAAC,EAA0C,CAAC;AAE7C,OAAO,EAAE,UAAU,IAAI,MAAM,EAAE,eAAe,EAAE,CAAC;AACjD,OAAO,EAAE,iBAAiB,IAAI,aAAa,EAAE,sBAAsB,EAAE,CAAC;AACtE,OAAO,EAAE,kBAAkB,IAAI,cAAc,EAAE,uBAAuB,EAAE,CAAC;AAEzE,cAAc,CAAC,MAAM,QAAQ,GAAG,CAAC,CAAM,EAAE,EAAE,CAAC,OAAO,CAAC,KAAK,QAAQ,CAAC;AAClE,cAAc,CAAC,MAAM,SAAS,GAAG,CAAC,CAAM,EAAE,EAAE,CAAC,OAAO,CAAC,KAAK,SAAS,CAAC;AACpE,cAAc,CAAC,MAAM,UAAU,GAAG,CAAC,CAAM,EAAE,EAAE,CAAC,OAAO,CAAC,KAAK,UAAU,CAAC;AACtE,cAAc;AACd,wDAAwD;AACxD,MAAM,CAAC,MAAM,QAAQ,GAAG,CAAC,CAAM,EAAe,EAAE,CAAC,CAAC,IAAI,IAAI,IAAI,MAAM,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC;AAE9E,cAAc;AACd,MAAM,CAAC,MAAM,SAAS,GAAG,CAAU,CAAM,EAAuB,EAAE;IAC9D,OAAO,QAAQ,CAAC,CAAC,CAAC,IAAI,UAAU,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC;AAC7C,CAAC,CAAC;AAEF,cAAc;AACd,MAAM,CAAC,MAAM,YAAY,GAAG,CAAU,CAAM,EAAsB,EAAE;IAChE,OAAO,QAAQ,CAAC,CAAC,CAAC,IAAI,UAAU,CAAC,CAAC,CAAC,SAAS,CAAC,CAAC;AAClD,CAAC,CAAC;AAEF,cAAc;AACd,MAAM,CAAC,MAAM,UAAU,GAAG,CAAU,CAAM,EAAoB,EAAE;IAC5D,OAAO,QAAQ,CAAC,CAAC,CAAC,IAAI,UAAU,CAAC,CAAC,CAAC,MAAM,CAAC,QAAQ,CAAC,CAAC,CAAC;AACzD,CAAC,CAAC;AAEF,cAAc;AACd,MAAM,CAAC,MAAM,eAAe,GAAG,CAAU,CAAM,EAAyB,EAAE;IACtE,OAAO,QAAQ,CAAC,CAAC,CAAC,IAAI,UAAU,CAAC,CAAC,CAAC,MAAM,CAAC,aAAa,CAAC,CAAC,CAAC;AAC9D,CAAC,CAAC;AAEF,cAAc;AACd,MAAM,CAAC,MAAM,WAAW,GAAG,CAAC,CAAM,EAAsB,EAAE;IACtD,OAAO,QAAQ,CAAC,CAAC,CAAC,IAAI,QAAQ,CAAC,CAAC,CAAC,QAAQ,CAAC,CAAC,CAAC;AAChD,CAAC,CAAC;AAEF,cAAc;AACd,MAAM,CAAC,MAAM,WAAW,GAAG,CAAU,CAAM,EAAqB,EAAE;IAC9D,OAAO,QAAQ,CAAC,CAAC,CAAC,IAAI,QAAQ,CAAC,CAAC,CAAC,QAAQ,CAAC,CAAC,CAAC;AAChD,CAAC,CAAC;AAEF,cAAc;AACd,MAAM,CAAC,MAAM,gBAAgB,GAAG,CAAU,CAAM,EAA0B,EAAE;IACxE,OAAO,QAAQ,CAAC,CAAC,CAAC,IAAI,CAAC,MAAM,IAAI,CAAC,CAAC,IAAI,CAAC,OAAO,IAAI,CAAC,CAAC,CAAC;AAC1D,CAAC,CAAC;AAEF,cAAc;AACd,MAAM,CAAC,MAAM,gBAAgB,GAAG,CAAU,CAAM,EAA0B,EAAE;IACxE,OAAO,QAAQ,CAAC,CAAC,CAAC;QACd,UAAU,CAAC,CAAC,CAAC,OAAO,CAAC,CAAC;QACtB,UAAU,CAAC,CAAC,CAAC,OAAO,CAAC,CAAC;QACtB,UAAU,CAAC,CAAC,CAAC,OAAO,CAAC,CAAC;QACtB,UAAU,CAAC,CAAC,CAAC,OAAO,CAAC,CAAC,CAAC;AAC/B,CAAC,CAAC;AAEF,cAAc;AACd,MAAM,CAAC,MAAM,YAAY,GAAG,CAAC,CAAM,EAAmB,EAAE;IACpD,OAAO,QAAQ,CAAC,CAAC,CAAC,IAAI,UAAU,CAAC,CAAC,CAAC,MAAM,CAAC,CAAC,IAAI,QAAQ,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC,CAAC;AACrE,CAAC,CAAC;AAEF,cAAc;AACd,MAAM,CAAC,MAAM,cAAc,GAAG,CAAC,CAAM,EAAqB,EAAE;IACxD,OAAO,oBAAoB,CAAC,CAAC,CAAC,IAAI,QAAQ,CAAO,CAAE,CAAC,WAAW,CAAC,CAAC,CAAC;AACtE,CAAC,CAAC;AAEF,cAAc;AACd,MAAM,CAAC,MAAM,eAAe,GAAG,CAAC,CAAM,EAAiB,EAAE;IACrD,OAAO,QAAQ,CAAC,CAAC,CAAC,IAAI,mBAAmB,CAAC,CAAC,CAAC,MAAM,CAAC,CAAC,CAAC;AACzD,CAAC,CAAC;AAEF,MAAM,iBAAiB,GAAG,CAAU,CAAM,EAA2B,EAAE,CAAC,CAAC,eAAe,IAAI,CAAC,IAAI,gBAAgB,IAAI,CAAC,CAAC,CAAC;AAExH,cAAc;AACd,MAAM,CAAC,MAAM,mBAAmB,GAAG,CAAU,CAAM,EAA0B,EAAE;IAC3E,OAAO,QAAQ,CAAC,CAAC,CAAC;QACd,UAAU,CAAC,CAAC,CAAC,OAAO,CAAC,CAAC;QACtB,UAAU,CAAC,CAAC,CAAC,WAAW,CAAC,CAAC;QAC1B,CAAC,iBAAiB,CAAC,CAAC,CAAC,CAAC;AAC9B,CAAC,CAAC;AAEF,cAAc;AACd,MAAM,CAAC,MAAM,mBAAmB,GAAG,CAAU,CAAM,EAA0B,EAAE;IAC3E,OAAO,QAAQ,CAAC,CAAC,CAAC;QACd,UAAU,CAAC,CAAC,CAAC,QAAQ,CAAC,CAAC;QACvB,UAAU,CAAC,CAAC,CAAC,WAAW,CAAC,CAAC;QAC1B,CAAC,iBAAiB,CAAC,CAAC,CAAC,CAAC;AAC9B,CAAC,CAAC;AAEF,cAAc;AACd,MAAM,CAAC,MAAM,oBAAoB,GAAG,CAAC,CAAM,EAA8B,EAAE;IACvE,OAAO,QAAQ,CAAC,CAAC,CAAC;QACd,UAAU,CAAC,CAAC,CAAC,KAAK,CAAC,CAAC;QACpB,UAAU,CAAC,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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/int.d.ts b/igv_component/node_modules/apache-arrow/util/int.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e8ebc17a569f6d502435ae49be252622f9798919
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/int.d.ts
@@ -0,0 +1,72 @@
+/** @ignore */
+export declare class BaseInt64 {
+    protected buffer: Uint32Array;
+    constructor(buffer: Uint32Array);
+    high(): number;
+    low(): number;
+    protected _times(other: BaseInt64): this;
+    protected _plus(other: BaseInt64): void;
+    lessThan(other: BaseInt64): boolean;
+    equals(other: BaseInt64): boolean;
+    greaterThan(other: BaseInt64): boolean;
+    hex(): string;
+}
+/** @ignore */
+export declare class Uint64 extends BaseInt64 {
+    times(other: Uint64): Uint64;
+    plus(other: Uint64): Uint64;
+    /** @nocollapse */
+    static from(val: any, out_buffer?: Uint32Array): Uint64;
+    /** @nocollapse */
+    static fromNumber(num: number, out_buffer?: Uint32Array): Uint64;
+    /** @nocollapse */
+    static fromString(str: string, out_buffer?: Uint32Array): Uint64;
+    /** @nocollapse */
+    static convertArray(values: (string | number)[]): Uint32Array;
+    /** @nocollapse */
+    static multiply(left: Uint64, right: Uint64): Uint64;
+    /** @nocollapse */
+    static add(left: Uint64, right: Uint64): Uint64;
+}
+/** @ignore */
+export declare class Int64 extends BaseInt64 {
+    negate(): Int64;
+    times(other: Int64): Int64;
+    plus(other: Int64): Int64;
+    lessThan(other: Int64): boolean;
+    /** @nocollapse */
+    static from(val: any, out_buffer?: Uint32Array): Int64;
+    /** @nocollapse */
+    static fromNumber(num: number, out_buffer?: Uint32Array): Int64;
+    /** @nocollapse */
+    static fromString(str: string, out_buffer?: Uint32Array): Int64;
+    /** @nocollapse */
+    static convertArray(values: (string | number)[]): Uint32Array;
+    /** @nocollapse */
+    static multiply(left: Int64, right: Int64): Int64;
+    /** @nocollapse */
+    static add(left: Int64, right: Int64): Int64;
+}
+/** @ignore */
+export declare class Int128 {
+    private buffer;
+    constructor(buffer: Uint32Array);
+    high(): Int64;
+    low(): Int64;
+    negate(): Int128;
+    times(other: Int128): Int128;
+    plus(other: Int128): Int128;
+    hex(): string;
+    /** @nocollapse */
+    static multiply(left: Int128, right: Int128): Int128;
+    /** @nocollapse */
+    static add(left: Int128, right: Int128): Int128;
+    /** @nocollapse */
+    static from(val: any, out_buffer?: Uint32Array): Int128;
+    /** @nocollapse */
+    static fromNumber(num: number, out_buffer?: Uint32Array): Int128;
+    /** @nocollapse */
+    static fromString(str: string, out_buffer?: Uint32Array): Int128;
+    /** @nocollapse */
+    static convertArray(values: (string | number)[]): Uint32Array;
+}
diff --git a/igv_component/node_modules/apache-arrow/util/int.d.ts.map b/igv_component/node_modules/apache-arrow/util/int.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..e8ce78e06a985888aa2d4ede7b57035d696b5064
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/int.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/int.ts"],"names":[],"mappings":"AA2CA,cAAc;AACd,qBAAa,SAAS;IACN,SAAS,CAAC,MAAM,EAAE,WAAW;gBAAnB,MAAM,EAAE,WAAW;IAElC,IAAI,IAAI,MAAM;IACd,GAAG,IAAI,MAAM;IAEpB,SAAS,CAAC,MAAM,CAAC,KAAK,EAAE,SAAS;IAuCjC,SAAS,CAAC,KAAK,CAAC,KAAK,EAAE,SAAS;IASzB,QAAQ,CAAC,KAAK,EAAE,SAAS,GAAG,OAAO;IAKnC,MAAM,CAAC,KAAK,EAAE,SAAS,GAAG,OAAO;IAIjC,WAAW,CAAC,KAAK,EAAE,SAAS,GAAG,OAAO;IAItC,GAAG,IAAI,MAAM;CAGvB;AAED,cAAc;AACd,qBAAa,MAAO,SAAQ,SAAS;IAC1B,KAAK,CAAC,KAAK,EAAE,MAAM,GAAG,MAAM;IAK5B,IAAI,CAAC,KAAK,EAAE,MAAM,GAAG,MAAM;IAKlC,kBAAkB;WACJ,IAAI,CAAC,GAAG,EAAE,GAAG,EAAE,UAAU,cAAqB,GAAG,MAAM;IAOrE,kBAAkB;WACJ,UAAU,CAAC,GAAG,EAAE,MAAM,EAAE,UAAU,cAAqB,GAAG,MAAM;IAU9E,kBAAkB;WACJ,UAAU,CAAC,GAAG,EAAE,MAAM,EAAE,UAAU,cAAqB,GAAG,MAAM;IAmB9E,kBAAkB;WACJ,YAAY,CAAC,MAAM,EAAE,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,GAAG,WAAW;IAQpE,kBAAkB;WACJ,QAAQ,CAAC,IAAI,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM,GAAG,MAAM;IAK3D,kBAAkB;WACJ,GAAG,CAAC,IAAI,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM,GAAG,MAAM;CAIzD;AAED,cAAc;AACd,qBAAa,KAAM,SAAQ,SAAS;IACzB,MAAM,IAAI,KAAK;IAQf,KAAK,CAAC,KAAK,EAAE,KAAK,GAAG,KAAK;IAK1B,IAAI,CAAC,KAAK,EAAE,KAAK,GAAG,KAAK;IAKzB,QAAQ,CAAC,KAAK,EAAE,KAAK,GAAG,OAAO;IAUtC,kBAAkB;WACJ,IAAI,CAAC,GAAG,EAAE,GAAG,EAAE,UAAU,cAAqB,GAAG,KAAK;IAOpE,kBAAkB;WACJ,UAAU,CAAC,GAAG,EAAE,MAAM,EAAE,UAAU,cAAqB,GAAG,KAAK;IAU7E,kBAAkB;WACJ,UAAU,CAAC,GAAG,EAAE,MAAM,EAAE,UAAU,cAAqB,GAAG,KAAK;IAoB7E,kBAAkB;WACJ,YAAY,CAAC,MAAM,EAAE,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,GAAG,WAAW;IAQpE,kBAAkB;WACJ,QAAQ,CAAC,IAAI,EAAE,KAAK,EAAE,KAAK,EAAE,KAAK,GAAG,KAAK;IAKxD,kBAAkB;WACJ,GAAG,CAAC,IAAI,EAAE,KAAK,EAAE,KAAK,EAAE,KAAK,GAAG,KAAK;CAItD;AAED,cAAc;AACd,qBAAa,MAAM;IACH,OAAO,CAAC,MAAM;gBAAN,MAAM,EAAE,WAAW;IAOhC,IAAI,IAAI,KAAK;IAIb,GAAG,IAAI,KAAK;IAIZ,MAAM,IAAI,MAAM;IAYhB,KAAK,CAAC,KAAK,EAAE,MAAM,GAAG,MAAM;IA0C5B,IAAI,CAAC,KAAK,EAAE,MAAM,GAAG,MAAM;IAyB3B,GAAG,IAAI,MAAM;IAIpB,kBAAkB;WACJ,QAAQ,CAAC,IAAI,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM,GAAG,MAAM;IAK3D,kBAAkB;WACJ,GAAG,CAAC,IAAI,EAAE,MAAM,EAAE,KAAK,EAAE,MAAM,GAAG,MAAM;IAKtD,kBAAkB;WACJ,IAAI,CAAC,GAAG,EAAE,GAAG,EAAE,UAAU,cAAqB,GAAG,MAAM;IAOrE,kBAAkB;WACJ,UAAU,CAAC,GAAG,EAAE,MAAM,EAAE,UAAU,cAAqB,GAAG,MAAM;IAU9E,kBAAkB;WACJ,UAAU,CAAC,GAAG,EAAE,MAAM,EAAE,UAAU,cAAqB,GAAG,MAAM;IAqB9E,kBAAkB;WACJ,YAAY,CAAC,MAAM,EAAE,CAAC,MAAM,GAAG,MAAM,CAAC,EAAE,GAAG,WAAW;CAQvE","file":"int.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/int.js b/igv_component/node_modules/apache-arrow/util/int.js
new file mode 100644
index 0000000000000000000000000000000000000000..a2e43807f01a78d244d1af728b05d10f6a990880
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/int.js
@@ -0,0 +1,378 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Int128 = exports.Int64 = exports.Uint64 = exports.BaseInt64 = void 0;
+/** @ignore */
+const carryBit16 = 1 << 16;
+/** @ignore */
+function intAsHex(value) {
+    if (value < 0) {
+        value = 0xFFFFFFFF + value + 1;
+    }
+    return `0x${value.toString(16)}`;
+}
+/** @ignore */
+const kInt32DecimalDigits = 8;
+/** @ignore */
+const kPowersOfTen = [
+    1,
+    10,
+    100,
+    1000,
+    10000,
+    100000,
+    1000000,
+    10000000,
+    100000000
+];
+/** @ignore */
+class BaseInt64 {
+    constructor(buffer) {
+        this.buffer = buffer;
+    }
+    high() { return this.buffer[1]; }
+    low() { return this.buffer[0]; }
+    _times(other) {
+        // Break the left and right numbers into 16 bit chunks
+        // so that we can multiply them without overflow.
+        const L = new Uint32Array([
+            this.buffer[1] >>> 16,
+            this.buffer[1] & 0xFFFF,
+            this.buffer[0] >>> 16,
+            this.buffer[0] & 0xFFFF
+        ]);
+        const R = new Uint32Array([
+            other.buffer[1] >>> 16,
+            other.buffer[1] & 0xFFFF,
+            other.buffer[0] >>> 16,
+            other.buffer[0] & 0xFFFF
+        ]);
+        let product = L[3] * R[3];
+        this.buffer[0] = product & 0xFFFF;
+        let sum = product >>> 16;
+        product = L[2] * R[3];
+        sum += product;
+        product = (L[3] * R[2]) >>> 0;
+        sum += product;
+        this.buffer[0] += sum << 16;
+        this.buffer[1] = (sum >>> 0 < product ? carryBit16 : 0);
+        this.buffer[1] += sum >>> 16;
+        this.buffer[1] += L[1] * R[3] + L[2] * R[2] + L[3] * R[1];
+        this.buffer[1] += (L[0] * R[3] + L[1] * R[2] + L[2] * R[1] + L[3] * R[0]) << 16;
+        return this;
+    }
+    _plus(other) {
+        const sum = (this.buffer[0] + other.buffer[0]) >>> 0;
+        this.buffer[1] += other.buffer[1];
+        if (sum < (this.buffer[0] >>> 0)) {
+            ++this.buffer[1];
+        }
+        this.buffer[0] = sum;
+    }
+    lessThan(other) {
+        return this.buffer[1] < other.buffer[1] ||
+            (this.buffer[1] === other.buffer[1] && this.buffer[0] < other.buffer[0]);
+    }
+    equals(other) {
+        return this.buffer[1] === other.buffer[1] && this.buffer[0] == other.buffer[0];
+    }
+    greaterThan(other) {
+        return other.lessThan(this);
+    }
+    hex() {
+        return `${intAsHex(this.buffer[1])} ${intAsHex(this.buffer[0])}`;
+    }
+}
+exports.BaseInt64 = BaseInt64;
+/** @ignore */
+class Uint64 extends BaseInt64 {
+    times(other) {
+        this._times(other);
+        return this;
+    }
+    plus(other) {
+        this._plus(other);
+        return this;
+    }
+    /** @nocollapse */
+    static from(val, out_buffer = new Uint32Array(2)) {
+        return Uint64.fromString(typeof (val) === 'string' ? val : val.toString(), out_buffer);
+    }
+    /** @nocollapse */
+    static fromNumber(num, out_buffer = new Uint32Array(2)) {
+        // Always parse numbers as strings - pulling out high and low bits
+        // directly seems to lose precision sometimes
+        // For example:
+        //     > -4613034156400212000 >>> 0
+        //     721782784
+        // The correct lower 32-bits are 721782752
+        return Uint64.fromString(num.toString(), out_buffer);
+    }
+    /** @nocollapse */
+    static fromString(str, out_buffer = new Uint32Array(2)) {
+        const length = str.length;
+        const out = new Uint64(out_buffer);
+        for (let posn = 0; posn < length;) {
+            const group = kInt32DecimalDigits < length - posn ?
+                kInt32DecimalDigits : length - posn;
+            const chunk = new Uint64(new Uint32Array([Number.parseInt(str.slice(posn, posn + group), 10), 0]));
+            const multiple = new Uint64(new Uint32Array([kPowersOfTen[group], 0]));
+            out.times(multiple);
+            out.plus(chunk);
+            posn += group;
+        }
+        return out;
+    }
+    /** @nocollapse */
+    static convertArray(values) {
+        const data = new Uint32Array(values.length * 2);
+        for (let i = -1, n = values.length; ++i < n;) {
+            Uint64.from(values[i], new Uint32Array(data.buffer, data.byteOffset + 2 * i * 4, 2));
+        }
+        return data;
+    }
+    /** @nocollapse */
+    static multiply(left, right) {
+        const rtrn = new Uint64(new Uint32Array(left.buffer));
+        return rtrn.times(right);
+    }
+    /** @nocollapse */
+    static add(left, right) {
+        const rtrn = new Uint64(new Uint32Array(left.buffer));
+        return rtrn.plus(right);
+    }
+}
+exports.Uint64 = Uint64;
+/** @ignore */
+class Int64 extends BaseInt64 {
+    negate() {
+        this.buffer[0] = ~this.buffer[0] + 1;
+        this.buffer[1] = ~this.buffer[1];
+        if (this.buffer[0] == 0) {
+            ++this.buffer[1];
+        }
+        return this;
+    }
+    times(other) {
+        this._times(other);
+        return this;
+    }
+    plus(other) {
+        this._plus(other);
+        return this;
+    }
+    lessThan(other) {
+        // force high bytes to be signed
+        // eslint-disable-next-line unicorn/prefer-math-trunc
+        const this_high = this.buffer[1] << 0;
+        // eslint-disable-next-line unicorn/prefer-math-trunc
+        const other_high = other.buffer[1] << 0;
+        return this_high < other_high ||
+            (this_high === other_high && this.buffer[0] < other.buffer[0]);
+    }
+    /** @nocollapse */
+    static from(val, out_buffer = new Uint32Array(2)) {
+        return Int64.fromString(typeof (val) === 'string' ? val : val.toString(), out_buffer);
+    }
+    /** @nocollapse */
+    static fromNumber(num, out_buffer = new Uint32Array(2)) {
+        // Always parse numbers as strings - pulling out high and low bits
+        // directly seems to lose precision sometimes
+        // For example:
+        //     > -4613034156400212000 >>> 0
+        //     721782784
+        // The correct lower 32-bits are 721782752
+        return Int64.fromString(num.toString(), out_buffer);
+    }
+    /** @nocollapse */
+    static fromString(str, out_buffer = new Uint32Array(2)) {
+        // TODO: Assert that out_buffer is 0 and length = 2
+        const negate = str.startsWith('-');
+        const length = str.length;
+        const out = new Int64(out_buffer);
+        for (let posn = negate ? 1 : 0; posn < length;) {
+            const group = kInt32DecimalDigits < length - posn ?
+                kInt32DecimalDigits : length - posn;
+            const chunk = new Int64(new Uint32Array([Number.parseInt(str.slice(posn, posn + group), 10), 0]));
+            const multiple = new Int64(new Uint32Array([kPowersOfTen[group], 0]));
+            out.times(multiple);
+            out.plus(chunk);
+            posn += group;
+        }
+        return negate ? out.negate() : out;
+    }
+    /** @nocollapse */
+    static convertArray(values) {
+        const data = new Uint32Array(values.length * 2);
+        for (let i = -1, n = values.length; ++i < n;) {
+            Int64.from(values[i], new Uint32Array(data.buffer, data.byteOffset + 2 * i * 4, 2));
+        }
+        return data;
+    }
+    /** @nocollapse */
+    static multiply(left, right) {
+        const rtrn = new Int64(new Uint32Array(left.buffer));
+        return rtrn.times(right);
+    }
+    /** @nocollapse */
+    static add(left, right) {
+        const rtrn = new Int64(new Uint32Array(left.buffer));
+        return rtrn.plus(right);
+    }
+}
+exports.Int64 = Int64;
+/** @ignore */
+class Int128 {
+    constructor(buffer) {
+        this.buffer = buffer;
+        // buffer[3] MSB (high)
+        // buffer[2]
+        // buffer[1]
+        // buffer[0] LSB (low)
+    }
+    high() {
+        return new Int64(new Uint32Array(this.buffer.buffer, this.buffer.byteOffset + 8, 2));
+    }
+    low() {
+        return new Int64(new Uint32Array(this.buffer.buffer, this.buffer.byteOffset, 2));
+    }
+    negate() {
+        this.buffer[0] = ~this.buffer[0] + 1;
+        this.buffer[1] = ~this.buffer[1];
+        this.buffer[2] = ~this.buffer[2];
+        this.buffer[3] = ~this.buffer[3];
+        if (this.buffer[0] == 0) {
+            ++this.buffer[1];
+        }
+        if (this.buffer[1] == 0) {
+            ++this.buffer[2];
+        }
+        if (this.buffer[2] == 0) {
+            ++this.buffer[3];
+        }
+        return this;
+    }
+    times(other) {
+        // Break the left and right numbers into 32 bit chunks
+        // so that we can multiply them without overflow.
+        const L0 = new Uint64(new Uint32Array([this.buffer[3], 0]));
+        const L1 = new Uint64(new Uint32Array([this.buffer[2], 0]));
+        const L2 = new Uint64(new Uint32Array([this.buffer[1], 0]));
+        const L3 = new Uint64(new Uint32Array([this.buffer[0], 0]));
+        const R0 = new Uint64(new Uint32Array([other.buffer[3], 0]));
+        const R1 = new Uint64(new Uint32Array([other.buffer[2], 0]));
+        const R2 = new Uint64(new Uint32Array([other.buffer[1], 0]));
+        const R3 = new Uint64(new Uint32Array([other.buffer[0], 0]));
+        let product = Uint64.multiply(L3, R3);
+        this.buffer[0] = product.low();
+        const sum = new Uint64(new Uint32Array([product.high(), 0]));
+        product = Uint64.multiply(L2, R3);
+        sum.plus(product);
+        product = Uint64.multiply(L3, R2);
+        sum.plus(product);
+        this.buffer[1] = sum.low();
+        this.buffer[3] = (sum.lessThan(product) ? 1 : 0);
+        this.buffer[2] = sum.high();
+        const high = new Uint64(new Uint32Array(this.buffer.buffer, this.buffer.byteOffset + 8, 2));
+        high.plus(Uint64.multiply(L1, R3))
+            .plus(Uint64.multiply(L2, R2))
+            .plus(Uint64.multiply(L3, R1));
+        this.buffer[3] += Uint64.multiply(L0, R3)
+            .plus(Uint64.multiply(L1, R2))
+            .plus(Uint64.multiply(L2, R1))
+            .plus(Uint64.multiply(L3, R0)).low();
+        return this;
+    }
+    plus(other) {
+        const sums = new Uint32Array(4);
+        sums[3] = (this.buffer[3] + other.buffer[3]) >>> 0;
+        sums[2] = (this.buffer[2] + other.buffer[2]) >>> 0;
+        sums[1] = (this.buffer[1] + other.buffer[1]) >>> 0;
+        sums[0] = (this.buffer[0] + other.buffer[0]) >>> 0;
+        if (sums[0] < (this.buffer[0] >>> 0)) {
+            ++sums[1];
+        }
+        if (sums[1] < (this.buffer[1] >>> 0)) {
+            ++sums[2];
+        }
+        if (sums[2] < (this.buffer[2] >>> 0)) {
+            ++sums[3];
+        }
+        this.buffer[3] = sums[3];
+        this.buffer[2] = sums[2];
+        this.buffer[1] = sums[1];
+        this.buffer[0] = sums[0];
+        return this;
+    }
+    hex() {
+        return `${intAsHex(this.buffer[3])} ${intAsHex(this.buffer[2])} ${intAsHex(this.buffer[1])} ${intAsHex(this.buffer[0])}`;
+    }
+    /** @nocollapse */
+    static multiply(left, right) {
+        const rtrn = new Int128(new Uint32Array(left.buffer));
+        return rtrn.times(right);
+    }
+    /** @nocollapse */
+    static add(left, right) {
+        const rtrn = new Int128(new Uint32Array(left.buffer));
+        return rtrn.plus(right);
+    }
+    /** @nocollapse */
+    static from(val, out_buffer = new Uint32Array(4)) {
+        return Int128.fromString(typeof (val) === 'string' ? val : val.toString(), out_buffer);
+    }
+    /** @nocollapse */
+    static fromNumber(num, out_buffer = new Uint32Array(4)) {
+        // Always parse numbers as strings - pulling out high and low bits
+        // directly seems to lose precision sometimes
+        // For example:
+        //     > -4613034156400212000 >>> 0
+        //     721782784
+        // The correct lower 32-bits are 721782752
+        return Int128.fromString(num.toString(), out_buffer);
+    }
+    /** @nocollapse */
+    static fromString(str, out_buffer = new Uint32Array(4)) {
+        // TODO: Assert that out_buffer is 0 and length = 4
+        const negate = str.startsWith('-');
+        const length = str.length;
+        const out = new Int128(out_buffer);
+        for (let posn = negate ? 1 : 0; posn < length;) {
+            const group = kInt32DecimalDigits < length - posn ?
+                kInt32DecimalDigits : length - posn;
+            const chunk = new Int128(new Uint32Array([Number.parseInt(str.slice(posn, posn + group), 10), 0, 0, 0]));
+            const multiple = new Int128(new Uint32Array([kPowersOfTen[group], 0, 0, 0]));
+            out.times(multiple);
+            out.plus(chunk);
+            posn += group;
+        }
+        return negate ? out.negate() : out;
+    }
+    /** @nocollapse */
+    static convertArray(values) {
+        // TODO: Distinguish between string and number at compile-time
+        const data = new Uint32Array(values.length * 4);
+        for (let i = -1, n = values.length; ++i < n;) {
+            Int128.from(values[i], new Uint32Array(data.buffer, data.byteOffset + 4 * 4 * i, 4));
+        }
+        return data;
+    }
+}
+exports.Int128 = Int128;
+
+//# sourceMappingURL=int.js.map
diff --git a/igv_component/node_modules/apache-arrow/util/int.js.map b/igv_component/node_modules/apache-arrow/util/int.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..c0cd1927fcf9bbb26096f6619384235b4a220ef0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/int.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/int.mjs b/igv_component/node_modules/apache-arrow/util/int.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..5a347d7645d9735a42c7a99c9319791f59ba86e8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/int.mjs
@@ -0,0 +1,371 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+/** @ignore */
+const carryBit16 = 1 << 16;
+/** @ignore */
+function intAsHex(value) {
+    if (value < 0) {
+        value = 0xFFFFFFFF + value + 1;
+    }
+    return `0x${value.toString(16)}`;
+}
+/** @ignore */
+const kInt32DecimalDigits = 8;
+/** @ignore */
+const kPowersOfTen = [
+    1,
+    10,
+    100,
+    1000,
+    10000,
+    100000,
+    1000000,
+    10000000,
+    100000000
+];
+/** @ignore */
+export class BaseInt64 {
+    constructor(buffer) {
+        this.buffer = buffer;
+    }
+    high() { return this.buffer[1]; }
+    low() { return this.buffer[0]; }
+    _times(other) {
+        // Break the left and right numbers into 16 bit chunks
+        // so that we can multiply them without overflow.
+        const L = new Uint32Array([
+            this.buffer[1] >>> 16,
+            this.buffer[1] & 0xFFFF,
+            this.buffer[0] >>> 16,
+            this.buffer[0] & 0xFFFF
+        ]);
+        const R = new Uint32Array([
+            other.buffer[1] >>> 16,
+            other.buffer[1] & 0xFFFF,
+            other.buffer[0] >>> 16,
+            other.buffer[0] & 0xFFFF
+        ]);
+        let product = L[3] * R[3];
+        this.buffer[0] = product & 0xFFFF;
+        let sum = product >>> 16;
+        product = L[2] * R[3];
+        sum += product;
+        product = (L[3] * R[2]) >>> 0;
+        sum += product;
+        this.buffer[0] += sum << 16;
+        this.buffer[1] = (sum >>> 0 < product ? carryBit16 : 0);
+        this.buffer[1] += sum >>> 16;
+        this.buffer[1] += L[1] * R[3] + L[2] * R[2] + L[3] * R[1];
+        this.buffer[1] += (L[0] * R[3] + L[1] * R[2] + L[2] * R[1] + L[3] * R[0]) << 16;
+        return this;
+    }
+    _plus(other) {
+        const sum = (this.buffer[0] + other.buffer[0]) >>> 0;
+        this.buffer[1] += other.buffer[1];
+        if (sum < (this.buffer[0] >>> 0)) {
+            ++this.buffer[1];
+        }
+        this.buffer[0] = sum;
+    }
+    lessThan(other) {
+        return this.buffer[1] < other.buffer[1] ||
+            (this.buffer[1] === other.buffer[1] && this.buffer[0] < other.buffer[0]);
+    }
+    equals(other) {
+        return this.buffer[1] === other.buffer[1] && this.buffer[0] == other.buffer[0];
+    }
+    greaterThan(other) {
+        return other.lessThan(this);
+    }
+    hex() {
+        return `${intAsHex(this.buffer[1])} ${intAsHex(this.buffer[0])}`;
+    }
+}
+/** @ignore */
+export class Uint64 extends BaseInt64 {
+    times(other) {
+        this._times(other);
+        return this;
+    }
+    plus(other) {
+        this._plus(other);
+        return this;
+    }
+    /** @nocollapse */
+    static from(val, out_buffer = new Uint32Array(2)) {
+        return Uint64.fromString(typeof (val) === 'string' ? val : val.toString(), out_buffer);
+    }
+    /** @nocollapse */
+    static fromNumber(num, out_buffer = new Uint32Array(2)) {
+        // Always parse numbers as strings - pulling out high and low bits
+        // directly seems to lose precision sometimes
+        // For example:
+        //     > -4613034156400212000 >>> 0
+        //     721782784
+        // The correct lower 32-bits are 721782752
+        return Uint64.fromString(num.toString(), out_buffer);
+    }
+    /** @nocollapse */
+    static fromString(str, out_buffer = new Uint32Array(2)) {
+        const length = str.length;
+        const out = new Uint64(out_buffer);
+        for (let posn = 0; posn < length;) {
+            const group = kInt32DecimalDigits < length - posn ?
+                kInt32DecimalDigits : length - posn;
+            const chunk = new Uint64(new Uint32Array([Number.parseInt(str.slice(posn, posn + group), 10), 0]));
+            const multiple = new Uint64(new Uint32Array([kPowersOfTen[group], 0]));
+            out.times(multiple);
+            out.plus(chunk);
+            posn += group;
+        }
+        return out;
+    }
+    /** @nocollapse */
+    static convertArray(values) {
+        const data = new Uint32Array(values.length * 2);
+        for (let i = -1, n = values.length; ++i < n;) {
+            Uint64.from(values[i], new Uint32Array(data.buffer, data.byteOffset + 2 * i * 4, 2));
+        }
+        return data;
+    }
+    /** @nocollapse */
+    static multiply(left, right) {
+        const rtrn = new Uint64(new Uint32Array(left.buffer));
+        return rtrn.times(right);
+    }
+    /** @nocollapse */
+    static add(left, right) {
+        const rtrn = new Uint64(new Uint32Array(left.buffer));
+        return rtrn.plus(right);
+    }
+}
+/** @ignore */
+export class Int64 extends BaseInt64 {
+    negate() {
+        this.buffer[0] = ~this.buffer[0] + 1;
+        this.buffer[1] = ~this.buffer[1];
+        if (this.buffer[0] == 0) {
+            ++this.buffer[1];
+        }
+        return this;
+    }
+    times(other) {
+        this._times(other);
+        return this;
+    }
+    plus(other) {
+        this._plus(other);
+        return this;
+    }
+    lessThan(other) {
+        // force high bytes to be signed
+        // eslint-disable-next-line unicorn/prefer-math-trunc
+        const this_high = this.buffer[1] << 0;
+        // eslint-disable-next-line unicorn/prefer-math-trunc
+        const other_high = other.buffer[1] << 0;
+        return this_high < other_high ||
+            (this_high === other_high && this.buffer[0] < other.buffer[0]);
+    }
+    /** @nocollapse */
+    static from(val, out_buffer = new Uint32Array(2)) {
+        return Int64.fromString(typeof (val) === 'string' ? val : val.toString(), out_buffer);
+    }
+    /** @nocollapse */
+    static fromNumber(num, out_buffer = new Uint32Array(2)) {
+        // Always parse numbers as strings - pulling out high and low bits
+        // directly seems to lose precision sometimes
+        // For example:
+        //     > -4613034156400212000 >>> 0
+        //     721782784
+        // The correct lower 32-bits are 721782752
+        return Int64.fromString(num.toString(), out_buffer);
+    }
+    /** @nocollapse */
+    static fromString(str, out_buffer = new Uint32Array(2)) {
+        // TODO: Assert that out_buffer is 0 and length = 2
+        const negate = str.startsWith('-');
+        const length = str.length;
+        const out = new Int64(out_buffer);
+        for (let posn = negate ? 1 : 0; posn < length;) {
+            const group = kInt32DecimalDigits < length - posn ?
+                kInt32DecimalDigits : length - posn;
+            const chunk = new Int64(new Uint32Array([Number.parseInt(str.slice(posn, posn + group), 10), 0]));
+            const multiple = new Int64(new Uint32Array([kPowersOfTen[group], 0]));
+            out.times(multiple);
+            out.plus(chunk);
+            posn += group;
+        }
+        return negate ? out.negate() : out;
+    }
+    /** @nocollapse */
+    static convertArray(values) {
+        const data = new Uint32Array(values.length * 2);
+        for (let i = -1, n = values.length; ++i < n;) {
+            Int64.from(values[i], new Uint32Array(data.buffer, data.byteOffset + 2 * i * 4, 2));
+        }
+        return data;
+    }
+    /** @nocollapse */
+    static multiply(left, right) {
+        const rtrn = new Int64(new Uint32Array(left.buffer));
+        return rtrn.times(right);
+    }
+    /** @nocollapse */
+    static add(left, right) {
+        const rtrn = new Int64(new Uint32Array(left.buffer));
+        return rtrn.plus(right);
+    }
+}
+/** @ignore */
+export class Int128 {
+    constructor(buffer) {
+        this.buffer = buffer;
+        // buffer[3] MSB (high)
+        // buffer[2]
+        // buffer[1]
+        // buffer[0] LSB (low)
+    }
+    high() {
+        return new Int64(new Uint32Array(this.buffer.buffer, this.buffer.byteOffset + 8, 2));
+    }
+    low() {
+        return new Int64(new Uint32Array(this.buffer.buffer, this.buffer.byteOffset, 2));
+    }
+    negate() {
+        this.buffer[0] = ~this.buffer[0] + 1;
+        this.buffer[1] = ~this.buffer[1];
+        this.buffer[2] = ~this.buffer[2];
+        this.buffer[3] = ~this.buffer[3];
+        if (this.buffer[0] == 0) {
+            ++this.buffer[1];
+        }
+        if (this.buffer[1] == 0) {
+            ++this.buffer[2];
+        }
+        if (this.buffer[2] == 0) {
+            ++this.buffer[3];
+        }
+        return this;
+    }
+    times(other) {
+        // Break the left and right numbers into 32 bit chunks
+        // so that we can multiply them without overflow.
+        const L0 = new Uint64(new Uint32Array([this.buffer[3], 0]));
+        const L1 = new Uint64(new Uint32Array([this.buffer[2], 0]));
+        const L2 = new Uint64(new Uint32Array([this.buffer[1], 0]));
+        const L3 = new Uint64(new Uint32Array([this.buffer[0], 0]));
+        const R0 = new Uint64(new Uint32Array([other.buffer[3], 0]));
+        const R1 = new Uint64(new Uint32Array([other.buffer[2], 0]));
+        const R2 = new Uint64(new Uint32Array([other.buffer[1], 0]));
+        const R3 = new Uint64(new Uint32Array([other.buffer[0], 0]));
+        let product = Uint64.multiply(L3, R3);
+        this.buffer[0] = product.low();
+        const sum = new Uint64(new Uint32Array([product.high(), 0]));
+        product = Uint64.multiply(L2, R3);
+        sum.plus(product);
+        product = Uint64.multiply(L3, R2);
+        sum.plus(product);
+        this.buffer[1] = sum.low();
+        this.buffer[3] = (sum.lessThan(product) ? 1 : 0);
+        this.buffer[2] = sum.high();
+        const high = new Uint64(new Uint32Array(this.buffer.buffer, this.buffer.byteOffset + 8, 2));
+        high.plus(Uint64.multiply(L1, R3))
+            .plus(Uint64.multiply(L2, R2))
+            .plus(Uint64.multiply(L3, R1));
+        this.buffer[3] += Uint64.multiply(L0, R3)
+            .plus(Uint64.multiply(L1, R2))
+            .plus(Uint64.multiply(L2, R1))
+            .plus(Uint64.multiply(L3, R0)).low();
+        return this;
+    }
+    plus(other) {
+        const sums = new Uint32Array(4);
+        sums[3] = (this.buffer[3] + other.buffer[3]) >>> 0;
+        sums[2] = (this.buffer[2] + other.buffer[2]) >>> 0;
+        sums[1] = (this.buffer[1] + other.buffer[1]) >>> 0;
+        sums[0] = (this.buffer[0] + other.buffer[0]) >>> 0;
+        if (sums[0] < (this.buffer[0] >>> 0)) {
+            ++sums[1];
+        }
+        if (sums[1] < (this.buffer[1] >>> 0)) {
+            ++sums[2];
+        }
+        if (sums[2] < (this.buffer[2] >>> 0)) {
+            ++sums[3];
+        }
+        this.buffer[3] = sums[3];
+        this.buffer[2] = sums[2];
+        this.buffer[1] = sums[1];
+        this.buffer[0] = sums[0];
+        return this;
+    }
+    hex() {
+        return `${intAsHex(this.buffer[3])} ${intAsHex(this.buffer[2])} ${intAsHex(this.buffer[1])} ${intAsHex(this.buffer[0])}`;
+    }
+    /** @nocollapse */
+    static multiply(left, right) {
+        const rtrn = new Int128(new Uint32Array(left.buffer));
+        return rtrn.times(right);
+    }
+    /** @nocollapse */
+    static add(left, right) {
+        const rtrn = new Int128(new Uint32Array(left.buffer));
+        return rtrn.plus(right);
+    }
+    /** @nocollapse */
+    static from(val, out_buffer = new Uint32Array(4)) {
+        return Int128.fromString(typeof (val) === 'string' ? val : val.toString(), out_buffer);
+    }
+    /** @nocollapse */
+    static fromNumber(num, out_buffer = new Uint32Array(4)) {
+        // Always parse numbers as strings - pulling out high and low bits
+        // directly seems to lose precision sometimes
+        // For example:
+        //     > -4613034156400212000 >>> 0
+        //     721782784
+        // The correct lower 32-bits are 721782752
+        return Int128.fromString(num.toString(), out_buffer);
+    }
+    /** @nocollapse */
+    static fromString(str, out_buffer = new Uint32Array(4)) {
+        // TODO: Assert that out_buffer is 0 and length = 4
+        const negate = str.startsWith('-');
+        const length = str.length;
+        const out = new Int128(out_buffer);
+        for (let posn = negate ? 1 : 0; posn < length;) {
+            const group = kInt32DecimalDigits < length - posn ?
+                kInt32DecimalDigits : length - posn;
+            const chunk = new Int128(new Uint32Array([Number.parseInt(str.slice(posn, posn + group), 10), 0, 0, 0]));
+            const multiple = new Int128(new Uint32Array([kPowersOfTen[group], 0, 0, 0]));
+            out.times(multiple);
+            out.plus(chunk);
+            posn += group;
+        }
+        return negate ? out.negate() : out;
+    }
+    /** @nocollapse */
+    static convertArray(values) {
+        // TODO: Distinguish between string and number at compile-time
+        const data = new Uint32Array(values.length * 4);
+        for (let i = -1, n = values.length; ++i < n;) {
+            Int128.from(values[i], new Uint32Array(data.buffer, data.byteOffset + 4 * 4 * i, 4));
+        }
+        return data;
+    }
+}
+
+//# sourceMappingURL=int.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/util/int.mjs.map b/igv_component/node_modules/apache-arrow/util/int.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..9387459fe14e7b392af6eea798fcd7155da8773e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/int.mjs.map
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/math.d.ts b/igv_component/node_modules/apache-arrow/util/math.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..23ab0a0c2248ef037f51557cff77d8d69ae79c13
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/math.d.ts
@@ -0,0 +1,16 @@
+/**
+ * Convert uint16 (logically a float16) to a JS float64. Inspired by numpy's `npy_half_to_double`:
+ * https://github.com/numpy/numpy/blob/5a5987291dc95376bb098be8d8e5391e89e77a2c/numpy/core/src/npymath/halffloat.c#L29
+ * @param h {number} the uint16 to convert
+ * @private
+ * @ignore
+ */
+export declare function uint16ToFloat64(h: number): number;
+/**
+ * Convert a float64 to uint16 (assuming the float64 is logically a float16). Inspired by numpy's `npy_double_to_half`:
+ * https://github.com/numpy/numpy/blob/5a5987291dc95376bb098be8d8e5391e89e77a2c/numpy/core/src/npymath/halffloat.c#L43
+ * @param d {number} The float64 to convert
+ * @private
+ * @ignore
+ */
+export declare function float64ToUint16(d: number): number;
diff --git a/igv_component/node_modules/apache-arrow/util/math.d.ts.map b/igv_component/node_modules/apache-arrow/util/math.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..74b9ce6f985591e9b85bc07af6273d4220a179de
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/math.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/math.ts"],"names":[],"mappings":"AAoBA;;;;;;GAMG;AACH,wBAAgB,eAAe,CAAC,CAAC,EAAE,MAAM,UASxC;AAED;;;;;;GAMG;AACH,wBAAgB,eAAe,CAAC,CAAC,EAAE,MAAM,UA2DxC","file":"math.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/math.js b/igv_component/node_modules/apache-arrow/util/math.js
new file mode 100644
index 0000000000000000000000000000000000000000..cc45d76b18a6a42f6ea1455b78ccbda5aa05a109
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/math.js
@@ -0,0 +1,107 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.float64ToUint16 = exports.uint16ToFloat64 = void 0;
+const f64 = new Float64Array(1);
+const u32 = new Uint32Array(f64.buffer);
+/**
+ * Convert uint16 (logically a float16) to a JS float64. Inspired by numpy's `npy_half_to_double`:
+ * https://github.com/numpy/numpy/blob/5a5987291dc95376bb098be8d8e5391e89e77a2c/numpy/core/src/npymath/halffloat.c#L29
+ * @param h {number} the uint16 to convert
+ * @private
+ * @ignore
+ */
+function uint16ToFloat64(h) {
+    const expo = (h & 0x7C00) >> 10;
+    const sigf = (h & 0x03FF) / 1024;
+    const sign = Math.pow((-1), ((h & 0x8000) >> 15));
+    switch (expo) {
+        case 0x1F: return sign * (sigf ? Number.NaN : 1 / 0);
+        case 0x00: return sign * (sigf ? 6.103515625e-5 * sigf : 0);
+    }
+    return sign * (Math.pow(2, (expo - 15))) * (1 + sigf);
+}
+exports.uint16ToFloat64 = uint16ToFloat64;
+/**
+ * Convert a float64 to uint16 (assuming the float64 is logically a float16). Inspired by numpy's `npy_double_to_half`:
+ * https://github.com/numpy/numpy/blob/5a5987291dc95376bb098be8d8e5391e89e77a2c/numpy/core/src/npymath/halffloat.c#L43
+ * @param d {number} The float64 to convert
+ * @private
+ * @ignore
+ */
+function float64ToUint16(d) {
+    if (d !== d) {
+        return 0x7E00;
+    } // NaN
+    f64[0] = d;
+    // Magic numbers:
+    // 0x80000000 = 10000000 00000000 00000000 00000000 -- masks the 32nd bit
+    // 0x7ff00000 = 01111111 11110000 00000000 00000000 -- masks the 21st-31st bits
+    // 0x000fffff = 00000000 00001111 11111111 11111111 -- masks the 1st-20th bit
+    const sign = (u32[1] & 0x80000000) >> 16 & 0xFFFF;
+    let expo = (u32[1] & 0x7FF00000), sigf = 0x0000;
+    if (expo >= 0x40F00000) {
+        //
+        // If exponent overflowed, the float16 is either NaN or Infinity.
+        // Rules to propagate the sign bit: mantissa > 0 ? NaN : +/-Infinity
+        //
+        // Magic numbers:
+        // 0x40F00000 = 01000000 11110000 00000000 00000000 -- 6-bit exponent overflow
+        // 0x7C000000 = 01111100 00000000 00000000 00000000 -- masks the 27th-31st bits
+        //
+        // returns:
+        // qNaN, aka 32256 decimal, 0x7E00 hex, or 01111110 00000000 binary
+        // sNaN, aka 32000 decimal, 0x7D00 hex, or 01111101 00000000 binary
+        // +inf, aka 31744 decimal, 0x7C00 hex, or 01111100 00000000 binary
+        // -inf, aka 64512 decimal, 0xFC00 hex, or 11111100 00000000 binary
+        //
+        // If mantissa is greater than 23 bits, set to +Infinity like numpy
+        if (u32[0] > 0) {
+            expo = 0x7C00;
+        }
+        else {
+            expo = (expo & 0x7C000000) >> 16;
+            sigf = (u32[1] & 0x000FFFFF) >> 10;
+        }
+    }
+    else if (expo <= 0x3F000000) {
+        //
+        // If exponent underflowed, the float is either signed zero or subnormal.
+        //
+        // Magic numbers:
+        // 0x3F000000 = 00111111 00000000 00000000 00000000 -- 6-bit exponent underflow
+        //
+        sigf = 0x100000 + (u32[1] & 0x000FFFFF);
+        sigf = 0x100000 + (sigf << ((expo >> 20) - 998)) >> 21;
+        expo = 0;
+    }
+    else {
+        //
+        // No overflow or underflow, rebase the exponent and round the mantissa
+        // Magic numbers:
+        // 0x200 = 00000010 00000000 -- masks off the 10th bit
+        //
+        // Ensure the first mantissa bit (the 10th one) is 1 and round
+        expo = (expo - 0x3F000000) >> 10;
+        sigf = ((u32[1] & 0x000FFFFF) + 0x200) >> 10;
+    }
+    return sign | expo | sigf & 0xFFFF;
+}
+exports.float64ToUint16 = float64ToUint16;
+
+//# sourceMappingURL=math.js.map
diff --git a/igv_component/node_modules/apache-arrow/util/math.js.map b/igv_component/node_modules/apache-arrow/util/math.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..4b9ee3f40e54d56ffd4eb3923c371c2da7e3cfc0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/math.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/math.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,MAAM,GAAG,GAAG,IAAI,YAAY,CAAC,CAAC,CAAC,CAAC;AAChC,MAAM,GAAG,GAAG,IAAI,WAAW,CAAC,GAAG,CAAC,MAAM,CAAC,CAAC;AAExC;;;;;;GAMG;AACH,SAAgB,eAAe,CAAC,CAAS;IACrC,MAAM,IAAI,GAAG,CAAC,CAAC,GAAG,MAAM,CAAC,IAAI,EAAE,CAAC;IAChC,MAAM,IAAI,GAAG,CAAC,CAAC,GAAG,MAAM,CAAC,GAAG,IAAI,CAAC;IACjC,MAAM,IAAI,GAAG,SAAA,CAAC,CAAC,CAAC,CAAC,EAAI,CAAC,CAAC,CAAC,GAAG,MAAM,CAAC,IAAI,EAAE,CAAC,CAAA,CAAC;IAC1C,QAAQ,IAAI,EAAE;QACV,KAAK,IAAI,CAAC,CAAC,OAAO,IAAI,GAAG,CAAC,IAAI,CAAC,CAAC,CAAC,MAAM,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC;QACrD,KAAK,IAAI,CAAC,CAAC,OAAO,IAAI,GAAG,CAAC,IAAI,CAAC,CAAC,CAAC,cAAc,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;KAC/D;IACD,OAAO,IAAI,GAAG,CAAC,SAAA,CAAC,EAAI,CAAC,IAAI,GAAG,EAAE,CAAC,CAAA,CAAC,GAAG,CAAC,CAAC,GAAG,IAAI,CAAC,CAAC;AAClD,CAAC;AATD,0CASC;AAED;;;;;;GAMG;AACH,SAAgB,eAAe,CAAC,CAAS;IAErC,IAAI,CAAC,KAAK,CAAC,EAAE;QAAE,OAAO,MAAM,CAAC;KAAE,CAAC,MAAM;IAEtC,GAAG,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC;IAEX,iBAAiB;IACjB,yEAAyE;IACzE,+EAA+E;IAC/E,6EAA6E;IAE7E,MAAM,IAAI,GAAG,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,UAAU,CAAC,IAAI,EAAE,GAAG,MAAM,CAAC;IAClD,IAAI,IAAI,GAAG,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,UAAU,CAAC,EAAE,IAAI,GAAG,MAAM,CAAC;IAEhD,IAAI,IAAI,IAAI,UAAU,EAAE;QACpB,EAAE;QACF,iEAAiE;QACjE,oEAAoE;QACpE,EAAE;QACF,iBAAiB;QACjB,8EAA8E;QAC9E,+EAA+E;QAC/E,EAAE;QACF,WAAW;QACX,mEAAmE;QACnE,mEAAmE;QACnE,mEAAmE;QACnE,mEAAmE;QACnE,EAAE;QACF,mEAAmE;QACnE,IAAI,GAAG,CAAC,CAAC,CAAC,GAAG,CAAC,EAAE;YACZ,IAAI,GAAG,MAAM,CAAC;SACjB;aAAM;YACH,IAAI,GAAG,CAAC,IAAI,GAAG,UAAU,CAAC,IAAI,EAAE,CAAC;YACjC,IAAI,GAAG,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,UAAU,CAAC,IAAI,EAAE,CAAC;SACtC;KACJ;SAAM,IAAI,IAAI,IAAI,UAAU,EAAE;QAC3B,EAAE;QACF,yEAAyE;QACzE,EAAE;QACF,iBAAiB;QACjB,+EAA+E;QAC/E,EAAE;QACF,IAAI,GAAG,QAAQ,GAAG,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,UAAU,CAAC,CAAC;QACxC,IAAI,GAAG,QAAQ,GAAG,CAAC,IAAI,IAAI,CAAC,CAAC,IAAI,IAAI,EAAE,CAAC,GAAG,GAAG,CAAC,CAAC,IAAI,EAAE,CAAC;QACvD,IAAI,GAAG,CAAC,CAAC;KACZ;SAAM;QACH,EAAE;QACF,uEAAuE;QACvE,iBAAiB;QACjB,sDAAsD;QACtD,EAAE;QAEF,8DAA8D;QAC9D,IAAI,GAAG,CAAC,IAAI,GAAG,UAAU,CAAC,IAAI,EAAE,CAAC;QACjC,IAAI,GAAG,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,UAAU,CAAC,GAAG,KAAK,CAAC,IAAI,EAAE,CAAC;KAChD;IAED,OAAO,IAAI,GAAG,IAAI,GAAG,IAAI,GAAG,MAAM,CAAC;AACvC,CAAC;AA3DD,0CA2DC","file":"math.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/math.mjs b/igv_component/node_modules/apache-arrow/util/math.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..938ad28401e4f8adfd726bee9bd37752d3f1f308
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/math.mjs
@@ -0,0 +1,102 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+const f64 = new Float64Array(1);
+const u32 = new Uint32Array(f64.buffer);
+/**
+ * Convert uint16 (logically a float16) to a JS float64. Inspired by numpy's `npy_half_to_double`:
+ * https://github.com/numpy/numpy/blob/5a5987291dc95376bb098be8d8e5391e89e77a2c/numpy/core/src/npymath/halffloat.c#L29
+ * @param h {number} the uint16 to convert
+ * @private
+ * @ignore
+ */
+export function uint16ToFloat64(h) {
+    const expo = (h & 0x7C00) >> 10;
+    const sigf = (h & 0x03FF) / 1024;
+    const sign = Math.pow((-1), ((h & 0x8000) >> 15));
+    switch (expo) {
+        case 0x1F: return sign * (sigf ? Number.NaN : 1 / 0);
+        case 0x00: return sign * (sigf ? 6.103515625e-5 * sigf : 0);
+    }
+    return sign * (Math.pow(2, (expo - 15))) * (1 + sigf);
+}
+/**
+ * Convert a float64 to uint16 (assuming the float64 is logically a float16). Inspired by numpy's `npy_double_to_half`:
+ * https://github.com/numpy/numpy/blob/5a5987291dc95376bb098be8d8e5391e89e77a2c/numpy/core/src/npymath/halffloat.c#L43
+ * @param d {number} The float64 to convert
+ * @private
+ * @ignore
+ */
+export function float64ToUint16(d) {
+    if (d !== d) {
+        return 0x7E00;
+    } // NaN
+    f64[0] = d;
+    // Magic numbers:
+    // 0x80000000 = 10000000 00000000 00000000 00000000 -- masks the 32nd bit
+    // 0x7ff00000 = 01111111 11110000 00000000 00000000 -- masks the 21st-31st bits
+    // 0x000fffff = 00000000 00001111 11111111 11111111 -- masks the 1st-20th bit
+    const sign = (u32[1] & 0x80000000) >> 16 & 0xFFFF;
+    let expo = (u32[1] & 0x7FF00000), sigf = 0x0000;
+    if (expo >= 0x40F00000) {
+        //
+        // If exponent overflowed, the float16 is either NaN or Infinity.
+        // Rules to propagate the sign bit: mantissa > 0 ? NaN : +/-Infinity
+        //
+        // Magic numbers:
+        // 0x40F00000 = 01000000 11110000 00000000 00000000 -- 6-bit exponent overflow
+        // 0x7C000000 = 01111100 00000000 00000000 00000000 -- masks the 27th-31st bits
+        //
+        // returns:
+        // qNaN, aka 32256 decimal, 0x7E00 hex, or 01111110 00000000 binary
+        // sNaN, aka 32000 decimal, 0x7D00 hex, or 01111101 00000000 binary
+        // +inf, aka 31744 decimal, 0x7C00 hex, or 01111100 00000000 binary
+        // -inf, aka 64512 decimal, 0xFC00 hex, or 11111100 00000000 binary
+        //
+        // If mantissa is greater than 23 bits, set to +Infinity like numpy
+        if (u32[0] > 0) {
+            expo = 0x7C00;
+        }
+        else {
+            expo = (expo & 0x7C000000) >> 16;
+            sigf = (u32[1] & 0x000FFFFF) >> 10;
+        }
+    }
+    else if (expo <= 0x3F000000) {
+        //
+        // If exponent underflowed, the float is either signed zero or subnormal.
+        //
+        // Magic numbers:
+        // 0x3F000000 = 00111111 00000000 00000000 00000000 -- 6-bit exponent underflow
+        //
+        sigf = 0x100000 + (u32[1] & 0x000FFFFF);
+        sigf = 0x100000 + (sigf << ((expo >> 20) - 998)) >> 21;
+        expo = 0;
+    }
+    else {
+        //
+        // No overflow or underflow, rebase the exponent and round the mantissa
+        // Magic numbers:
+        // 0x200 = 00000010 00000000 -- masks off the 10th bit
+        //
+        // Ensure the first mantissa bit (the 10th one) is 1 and round
+        expo = (expo - 0x3F000000) >> 10;
+        sigf = ((u32[1] & 0x000FFFFF) + 0x200) >> 10;
+    }
+    return sign | expo | sigf & 0xFFFF;
+}
+
+//# sourceMappingURL=math.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/util/math.mjs.map b/igv_component/node_modules/apache-arrow/util/math.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..73db084ea304a0287c1665ec48f9806657ac3034
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/math.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/math.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,MAAM,GAAG,GAAG,IAAI,YAAY,CAAC,CAAC,CAAC,CAAC;AAChC,MAAM,GAAG,GAAG,IAAI,WAAW,CAAC,GAAG,CAAC,MAAM,CAAC,CAAC;AAExC;;;;;;GAMG;AACH,MAAM,UAAU,eAAe,CAAC,CAAS;IACrC,MAAM,IAAI,GAAG,CAAC,CAAC,GAAG,MAAM,CAAC,IAAI,EAAE,CAAC;IAChC,MAAM,IAAI,GAAG,CAAC,CAAC,GAAG,MAAM,CAAC,GAAG,IAAI,CAAC;IACjC,MAAM,IAAI,GAAG,SAAA,CAAC,CAAC,CAAC,CAAC,EAAI,CAAC,CAAC,CAAC,GAAG,MAAM,CAAC,IAAI,EAAE,CAAC,CAAA,CAAC;IAC1C,QAAQ,IAAI,EAAE;QACV,KAAK,IAAI,CAAC,CAAC,OAAO,IAAI,GAAG,CAAC,IAAI,CAAC,CAAC,CAAC,MAAM,CAAC,GAAG,CAAC,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC;QACrD,KAAK,IAAI,CAAC,CAAC,OAAO,IAAI,GAAG,CAAC,IAAI,CAAC,CAAC,CAAC,cAAc,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;KAC/D;IACD,OAAO,IAAI,GAAG,CAAC,SAAA,CAAC,EAAI,CAAC,IAAI,GAAG,EAAE,CAAC,CAAA,CAAC,GAAG,CAAC,CAAC,GAAG,IAAI,CAAC,CAAC;AAClD,CAAC;AAED;;;;;;GAMG;AACH,MAAM,UAAU,eAAe,CAAC,CAAS;IAErC,IAAI,CAAC,KAAK,CAAC,EAAE;QAAE,OAAO,MAAM,CAAC;KAAE,CAAC,MAAM;IAEtC,GAAG,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC;IAEX,iBAAiB;IACjB,yEAAyE;IACzE,+EAA+E;IAC/E,6EAA6E;IAE7E,MAAM,IAAI,GAAG,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,UAAU,CAAC,IAAI,EAAE,GAAG,MAAM,CAAC;IAClD,IAAI,IAAI,GAAG,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,UAAU,CAAC,EAAE,IAAI,GAAG,MAAM,CAAC;IAEhD,IAAI,IAAI,IAAI,UAAU,EAAE;QACpB,EAAE;QACF,iEAAiE;QACjE,oEAAoE;QACpE,EAAE;QACF,iBAAiB;QACjB,8EAA8E;QAC9E,+EAA+E;QAC/E,EAAE;QACF,WAAW;QACX,mEAAmE;QACnE,mEAAmE;QACnE,mEAAmE;QACnE,mEAAmE;QACnE,EAAE;QACF,mEAAmE;QACnE,IAAI,GAAG,CAAC,CAAC,CAAC,GAAG,CAAC,EAAE;YACZ,IAAI,GAAG,MAAM,CAAC;SACjB;aAAM;YACH,IAAI,GAAG,CAAC,IAAI,GAAG,UAAU,CAAC,IAAI,EAAE,CAAC;YACjC,IAAI,GAAG,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,UAAU,CAAC,IAAI,EAAE,CAAC;SACtC;KACJ;SAAM,IAAI,IAAI,IAAI,UAAU,EAAE;QAC3B,EAAE;QACF,yEAAyE;QACzE,EAAE;QACF,iBAAiB;QACjB,+EAA+E;QAC/E,EAAE;QACF,IAAI,GAAG,QAAQ,GAAG,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,UAAU,CAAC,CAAC;QACxC,IAAI,GAAG,QAAQ,GAAG,CAAC,IAAI,IAAI,CAAC,CAAC,IAAI,IAAI,EAAE,CAAC,GAAG,GAAG,CAAC,CAAC,IAAI,EAAE,CAAC;QACvD,IAAI,GAAG,CAAC,CAAC;KACZ;SAAM;QACH,EAAE;QACF,uEAAuE;QACvE,iBAAiB;QACjB,sDAAsD;QACtD,EAAE;QAEF,8DAA8D;QAC9D,IAAI,GAAG,CAAC,IAAI,GAAG,UAAU,CAAC,IAAI,EAAE,CAAC;QACjC,IAAI,GAAG,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,UAAU,CAAC,GAAG,KAAK,CAAC,IAAI,EAAE,CAAC;KAChD;IAED,OAAO,IAAI,GAAG,IAAI,GAAG,IAAI,GAAG,MAAM,CAAC;AACvC,CAAC","file":"math.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/pretty.d.ts b/igv_component/node_modules/apache-arrow/util/pretty.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..dc197e3e475dcb1a8574ec8f2e40800319ea423e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/pretty.d.ts
@@ -0,0 +1,2 @@
+/** @ignore */
+export declare function valueToString(x: any): string;
diff --git a/igv_component/node_modules/apache-arrow/util/pretty.d.ts.map b/igv_component/node_modules/apache-arrow/util/pretty.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..a10de8f5c72d09e663cf0c9f35489420b0e435cf
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/pretty.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/pretty.ts"],"names":[],"mappings":"AAqBA,cAAc;AACd,wBAAgB,aAAa,CAAC,CAAC,EAAE,GAAG,GAAG,MAAM,CAsB5C","file":"pretty.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/pretty.js b/igv_component/node_modules/apache-arrow/util/pretty.js
new file mode 100644
index 0000000000000000000000000000000000000000..5abce401e35ac022830369e53dccc25bef1addf8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/pretty.js
@@ -0,0 +1,52 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.valueToString = void 0;
+const compat_js_1 = require("./compat.js");
+/** @ignore */ const undf = void (0);
+/** @ignore */
+function valueToString(x) {
+    if (x === null) {
+        return 'null';
+    }
+    if (x === undf) {
+        return 'undefined';
+    }
+    switch (typeof x) {
+        case 'number': return `${x}`;
+        case 'bigint': return `${x}`;
+        case 'string': return `"${x}"`;
+    }
+    // If [Symbol.toPrimitive] is implemented (like in BN)
+    // use it instead of JSON.stringify(). This ensures we
+    // print BigInts, Decimals, and Binary in their native
+    // representation
+    if (typeof x[Symbol.toPrimitive] === 'function') {
+        return x[Symbol.toPrimitive]('string');
+    }
+    if (ArrayBuffer.isView(x)) {
+        if (x instanceof compat_js_1.BigInt64Array || x instanceof compat_js_1.BigUint64Array) {
+            return `[${[...x].map(x => valueToString(x))}]`;
+        }
+        return `[${x}]`;
+    }
+    return ArrayBuffer.isView(x) ? `[${x}]` : JSON.stringify(x, (_, y) => typeof y === 'bigint' ? `${y}` : y);
+}
+exports.valueToString = valueToString;
+
+//# sourceMappingURL=pretty.js.map
diff --git a/igv_component/node_modules/apache-arrow/util/pretty.js.map b/igv_component/node_modules/apache-arrow/util/pretty.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..dde3ebe3b54be0dd3a26ebb0b99697cc1412bb96
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/pretty.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/pretty.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,2CAA4D;AAE5D,cAAc,CAAC,MAAM,IAAI,GAAG,KAAK,CAAC,CAAC,CAAC,CAAC;AAErC,cAAc;AACd,SAAgB,aAAa,CAAC,CAAM;IAChC,IAAI,CAAC,KAAK,IAAI,EAAE;QAAE,OAAO,MAAM,CAAC;KAAE;IAClC,IAAI,CAAC,KAAK,IAAI,EAAE;QAAE,OAAO,WAAW,CAAC;KAAE;IACvC,QAAQ,OAAO,CAAC,EAAE;QACd,KAAK,QAAQ,CAAC,CAAC,OAAO,GAAG,CAAC,EAAE,CAAC;QAC7B,KAAK,QAAQ,CAAC,CAAC,OAAO,GAAG,CAAC,EAAE,CAAC;QAC7B,KAAK,QAAQ,CAAC,CAAC,OAAO,IAAI,CAAC,GAAG,CAAC;KAClC;IACD,sDAAsD;IACtD,sDAAsD;IACtD,sDAAsD;IACtD,iBAAiB;IACjB,IAAI,OAAO,CAAC,CAAC,MAAM,CAAC,WAAW,CAAC,KAAK,UAAU,EAAE;QAC7C,OAAO,CAAC,CAAC,MAAM,CAAC,WAAW,CAAC,CAAC,QAAQ,CAAC,CAAC;KAC1C;IACD,IAAI,WAAW,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE;QACvB,IAAI,CAAC,YAAY,yBAAa,IAAI,CAAC,YAAY,0BAAc,EAAE;YAC3D,OAAO,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,EAAE,CAAC,aAAa,CAAC,CAAC,CAAC,CAAC,GAAG,CAAC;SACnD;QACD,OAAO,IAAI,CAAC,GAAG,CAAC;KACnB;IACD,OAAO,WAAW,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC,IAAI,CAAC,SAAS,CAAC,CAAC,EAAE,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,OAAO,CAAC,KAAK,QAAQ,CAAC,CAAC,CAAC,GAAG,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;AAC9G,CAAC;AAtBD,sCAsBC","file":"pretty.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/pretty.mjs b/igv_component/node_modules/apache-arrow/util/pretty.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..fbdf69bd086095d9fafa717c404e1a3621d3cc5a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/pretty.mjs
@@ -0,0 +1,48 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { BigInt64Array, BigUint64Array } from './compat.mjs';
+/** @ignore */ const undf = void (0);
+/** @ignore */
+export function valueToString(x) {
+    if (x === null) {
+        return 'null';
+    }
+    if (x === undf) {
+        return 'undefined';
+    }
+    switch (typeof x) {
+        case 'number': return `${x}`;
+        case 'bigint': return `${x}`;
+        case 'string': return `"${x}"`;
+    }
+    // If [Symbol.toPrimitive] is implemented (like in BN)
+    // use it instead of JSON.stringify(). This ensures we
+    // print BigInts, Decimals, and Binary in their native
+    // representation
+    if (typeof x[Symbol.toPrimitive] === 'function') {
+        return x[Symbol.toPrimitive]('string');
+    }
+    if (ArrayBuffer.isView(x)) {
+        if (x instanceof BigInt64Array || x instanceof BigUint64Array) {
+            return `[${[...x].map(x => valueToString(x))}]`;
+        }
+        return `[${x}]`;
+    }
+    return ArrayBuffer.isView(x) ? `[${x}]` : JSON.stringify(x, (_, y) => typeof y === 'bigint' ? `${y}` : y);
+}
+
+//# sourceMappingURL=pretty.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/util/pretty.mjs.map b/igv_component/node_modules/apache-arrow/util/pretty.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..7cd52e406a52a6efcd5b2c54cdb9fcdaef7972a0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/pretty.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/pretty.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,EAAE,aAAa,EAAE,cAAc,EAAE,MAAM,aAAa,CAAC;AAE5D,cAAc,CAAC,MAAM,IAAI,GAAG,KAAK,CAAC,CAAC,CAAC,CAAC;AAErC,cAAc;AACd,MAAM,UAAU,aAAa,CAAC,CAAM;IAChC,IAAI,CAAC,KAAK,IAAI,EAAE;QAAE,OAAO,MAAM,CAAC;KAAE;IAClC,IAAI,CAAC,KAAK,IAAI,EAAE;QAAE,OAAO,WAAW,CAAC;KAAE;IACvC,QAAQ,OAAO,CAAC,EAAE;QACd,KAAK,QAAQ,CAAC,CAAC,OAAO,GAAG,CAAC,EAAE,CAAC;QAC7B,KAAK,QAAQ,CAAC,CAAC,OAAO,GAAG,CAAC,EAAE,CAAC;QAC7B,KAAK,QAAQ,CAAC,CAAC,OAAO,IAAI,CAAC,GAAG,CAAC;KAClC;IACD,sDAAsD;IACtD,sDAAsD;IACtD,sDAAsD;IACtD,iBAAiB;IACjB,IAAI,OAAO,CAAC,CAAC,MAAM,CAAC,WAAW,CAAC,KAAK,UAAU,EAAE;QAC7C,OAAO,CAAC,CAAC,MAAM,CAAC,WAAW,CAAC,CAAC,QAAQ,CAAC,CAAC;KAC1C;IACD,IAAI,WAAW,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE;QACvB,IAAI,CAAC,YAAY,aAAa,IAAI,CAAC,YAAY,cAAc,EAAE;YAC3D,OAAO,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC,GAAG,CAAC,CAAC,CAAC,EAAE,CAAC,aAAa,CAAC,CAAC,CAAC,CAAC,GAAG,CAAC;SACnD;QACD,OAAO,IAAI,CAAC,GAAG,CAAC;KACnB;IACD,OAAO,WAAW,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC,IAAI,CAAC,SAAS,CAAC,CAAC,EAAE,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,OAAO,CAAC,KAAK,QAAQ,CAAC,CAAC,CAAC,GAAG,CAAC,EAAE,CAAC,CAAC,CAAC,CAAC,CAAC,CAAC;AAC9G,CAAC","file":"pretty.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/recordbatch.d.ts b/igv_component/node_modules/apache-arrow/util/recordbatch.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..76cd43632f6e7a631b15c928c2046b86f67cd031
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/recordbatch.d.ts
@@ -0,0 +1,6 @@
+import { Vector } from '../vector.js';
+import { TypeMap } from '../type.js';
+import { Schema } from '../schema.js';
+import { RecordBatch } from '../recordbatch.js';
+/** @ignore */
+export declare function distributeVectorsIntoRecordBatches<T extends TypeMap = any>(schema: Schema<T>, vecs: Vector<T[keyof T]>[]): [Schema<T>, RecordBatch<T>[]];
diff --git a/igv_component/node_modules/apache-arrow/util/recordbatch.d.ts.map b/igv_component/node_modules/apache-arrow/util/recordbatch.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..6f9296de8ef4f21e63c7a37716bee9529254b90a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/recordbatch.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/recordbatch.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,MAAM,EAAE,MAAM,cAAc,CAAC;AAEtC,OAAO,EAAU,OAAO,EAAE,MAAM,YAAY,CAAC;AAC7C,OAAO,EAAE,MAAM,EAAS,MAAM,cAAc,CAAC;AAC7C,OAAO,EAAE,WAAW,EAAE,MAAM,mBAAmB,CAAC;AAEhD,cAAc;AACd,wBAAgB,kCAAkC,CAAC,CAAC,SAAS,OAAO,GAAG,GAAG,EAAE,MAAM,EAAE,MAAM,CAAC,CAAC,CAAC,EAAE,IAAI,EAAE,MAAM,CAAC,CAAC,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,GAAG,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,WAAW,CAAC,CAAC,CAAC,EAAE,CAAC,CAExJ","file":"recordbatch.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/recordbatch.js b/igv_component/node_modules/apache-arrow/util/recordbatch.js
new file mode 100644
index 0000000000000000000000000000000000000000..f170edba3ebc0442e07d26174a8089801eaa3b60
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/recordbatch.js
@@ -0,0 +1,89 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.distributeVectorsIntoRecordBatches = void 0;
+const data_js_1 = require("../data.js");
+const type_js_1 = require("../type.js");
+const recordbatch_js_1 = require("../recordbatch.js");
+/** @ignore */
+function distributeVectorsIntoRecordBatches(schema, vecs) {
+    return uniformlyDistributeChunksAcrossRecordBatches(schema, vecs.map((v) => v.data.concat()));
+}
+exports.distributeVectorsIntoRecordBatches = distributeVectorsIntoRecordBatches;
+/** @ignore */
+function uniformlyDistributeChunksAcrossRecordBatches(schema, cols) {
+    const fields = [...schema.fields];
+    const batches = [];
+    const memo = { numBatches: cols.reduce((n, c) => Math.max(n, c.length), 0) };
+    let numBatches = 0, batchLength = 0;
+    let i = -1;
+    const numColumns = cols.length;
+    let child, children = [];
+    while (memo.numBatches-- > 0) {
+        for (batchLength = Number.POSITIVE_INFINITY, i = -1; ++i < numColumns;) {
+            children[i] = child = cols[i].shift();
+            batchLength = Math.min(batchLength, child ? child.length : batchLength);
+        }
+        if (Number.isFinite(batchLength)) {
+            children = distributeChildren(fields, batchLength, children, cols, memo);
+            if (batchLength > 0) {
+                batches[numBatches++] = (0, data_js_1.makeData)({
+                    type: new type_js_1.Struct(fields),
+                    length: batchLength,
+                    nullCount: 0,
+                    children: children.slice()
+                });
+            }
+        }
+    }
+    return [
+        schema = schema.assign(fields),
+        batches.map((data) => new recordbatch_js_1.RecordBatch(schema, data))
+    ];
+}
+/** @ignore */
+function distributeChildren(fields, batchLength, children, columns, memo) {
+    var _a;
+    const nullBitmapSize = ((batchLength + 63) & ~63) >> 3;
+    for (let i = -1, n = columns.length; ++i < n;) {
+        const child = children[i];
+        const length = child === null || child === void 0 ? void 0 : child.length;
+        if (length >= batchLength) {
+            if (length === batchLength) {
+                children[i] = child;
+            }
+            else {
+                children[i] = child.slice(0, batchLength);
+                memo.numBatches = Math.max(memo.numBatches, columns[i].unshift(child.slice(batchLength, length - batchLength)));
+            }
+        }
+        else {
+            const field = fields[i];
+            fields[i] = field.clone({ nullable: true });
+            children[i] = (_a = child === null || child === void 0 ? void 0 : child._changeLengthAndBackfillNullBitmap(batchLength)) !== null && _a !== void 0 ? _a : (0, data_js_1.makeData)({
+                type: field.type,
+                length: batchLength,
+                nullCount: batchLength,
+                nullBitmap: new Uint8Array(nullBitmapSize)
+            });
+        }
+    }
+    return children;
+}
+
+//# sourceMappingURL=recordbatch.js.map
diff --git a/igv_component/node_modules/apache-arrow/util/recordbatch.js.map b/igv_component/node_modules/apache-arrow/util/recordbatch.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..29a064394108b728e5012c9843fef990e77b7a86
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/recordbatch.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/recordbatch.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAGrB,wCAA4C;AAC5C,wCAA6C;AAE7C,sDAAgD;AAEhD,cAAc;AACd,SAAgB,kCAAkC,CAA0B,MAAiB,EAAE,IAA0B;IACrH,OAAO,4CAA4C,CAAI,MAAM,EAAE,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;AACrG,CAAC;AAFD,gFAEC;AAED,cAAc;AACd,SAAS,4CAA4C,CAA0B,MAAiB,EAAE,IAA0B;IAExH,MAAM,MAAM,GAAG,CAAC,GAAG,MAAM,CAAC,MAAM,CAAC,CAAC;IAClC,MAAM,OAAO,GAAG,EAAuB,CAAC;IACxC,MAAM,IAAI,GAAG,EAAE,UAAU,EAAE,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,CAAC,EAAE,CAAC;IAE7E,IAAI,UAAU,GAAG,CAAC,EAAE,WAAW,GAAG,CAAC,CAAC;IACpC,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC;IACX,MAAM,UAAU,GAAG,IAAI,CAAC,MAAM,CAAC;IAC/B,IAAI,KAAuB,EAAE,QAAQ,GAAuB,EAAE,CAAC;IAE/D,OAAO,IAAI,CAAC,UAAU,EAAE,GAAG,CAAC,EAAE;QAE1B,KAAK,WAAW,GAAG,MAAM,CAAC,iBAAiB,EAAE,CAAC,GAAG,CAAC,CAAC,EAAE,EAAE,CAAC,GAAG,UAAU,GAAG;YACpE,QAAQ,CAAC,CAAC,CAAC,GAAG,KAAK,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC,KAAK,EAAG,CAAC;YACvC,WAAW,GAAG,IAAI,CAAC,GAAG,CAAC,WAAW,EAAE,KAAK,CAAC,CAAC,CAAC,KAAK,CAAC,MAAM,CAAC,CAAC,CAAC,WAAW,CAAC,CAAC;SAC3E;QAED,IAAI,MAAM,CAAC,QAAQ,CAAC,WAAW,CAAC,EAAE;YAC9B,QAAQ,GAAG,kBAAkB,CAAC,MAAM,EAAE,WAAW,EAAE,QAAQ,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC;YACzE,IAAI,WAAW,GAAG,CAAC,EAAE;gBACjB,OAAO,CAAC,UAAU,EAAE,CAAC,GAAG,IAAA,kBAAQ,EAAC;oBAC7B,IAAI,EAAE,IAAI,gBAAM,CAAC,MAAM,CAAC;oBACxB,MAAM,EAAE,WAAW;oBACnB,SAAS,EAAE,CAAC;oBACZ,QAAQ,EAAE,QAAQ,CAAC,KAAK,EAAE;iBAC7B,CAAC,CAAC;aACN;SACJ;KACJ;IAED,OAAO;QACH,MAAM,GAAG,MAAM,CAAC,MAAM,CAAC,MAAM,CAAC;QAC9B,OAAO,CAAC,GAAG,CAAC,CAAC,IAAI,EAAE,EAAE,CAAC,IAAI,4BAAW,CAAC,MAAM,EAAE,IAAI,CAAC,CAAC;KACvD,CAAC;AACN,CAAC;AAED,cAAc;AACd,SAAS,kBAAkB,CACvB,MAA2B,EAC3B,WAAmB,EACnB,QAA4B,EAC5B,OAA6B,EAC7B,IAA4B;;IAE5B,MAAM,cAAc,GAAG,CAAC,CAAC,WAAW,GAAG,EAAE,CAAC,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,CAAC;IACvD,KAAK,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,GAAG,OAAO,CAAC,MAAM,EAAE,EAAE,CAAC,GAAG,CAAC,GAAG;QAC3C,MAAM,KAAK,GAAG,QAAQ,CAAC,CAAC,CAAC,CAAC;QAC1B,MAAM,MAAM,GAAG,KAAK,aAAL,KAAK,uBAAL,KAAK,CAAE,MAAM,CAAC;QAC7B,IAAI,MAAM,IAAI,WAAW,EAAE;YACvB,IAAI,MAAM,KAAK,WAAW,EAAE;gBACxB,QAAQ,CAAC,CAAC,CAAC,GAAG,KAAK,CAAC;aACvB;iBAAM;gBACH,QAAQ,CAAC,CAAC,CAAC,GAAG,KAAK,CAAC,KAAK,CAAC,CAAC,EAAE,WAAW,CAAC,CAAC;gBAC1C,IAAI,CAAC,UAAU,GAAG,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,UAAU,EAAE,OAAO,CAAC,CAAC,CAAC,CAAC,OAAO,CAC1D,KAAK,CAAC,KAAK,CAAC,WAAW,EAAE,MAAM,GAAG,WAAW,CAAC,CACjD,CAAC,CAAC;aACN;SACJ;aAAM;YACH,MAAM,KAAK,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC;YACxB,MAAM,CAAC,CAAC,CAAC,GAAG,KAAK,CAAC,KAAK,CAAC,EAAE,QAAQ,EAAE,IAAI,EAAE,CAAC,CAAC;YAC5C,QAAQ,CAAC,CAAC,CAAC,GAAG,MAAA,KAAK,aAAL,KAAK,uBAAL,KAAK,CAAE,kCAAkC,CAAC,WAAW,CAAC,mCAAI,IAAA,kBAAQ,EAAC;gBAC7E,IAAI,EAAE,KAAK,CAAC,IAAI;gBAChB,MAAM,EAAE,WAAW;gBACnB,SAAS,EAAE,WAAW;gBACtB,UAAU,EAAE,IAAI,UAAU,CAAC,cAAc,CAAC;aAC7C,CAAqB,CAAC;SAC1B;KACJ;IACD,OAAO,QAAQ,CAAC;AACpB,CAAC","file":"recordbatch.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/recordbatch.mjs b/igv_component/node_modules/apache-arrow/util/recordbatch.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..e2e802ff3f23e683599e313cd89c3bf2f242feb4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/recordbatch.mjs
@@ -0,0 +1,85 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { makeData } from '../data.mjs';
+import { Struct } from '../type.mjs';
+import { RecordBatch } from '../recordbatch.mjs';
+/** @ignore */
+export function distributeVectorsIntoRecordBatches(schema, vecs) {
+    return uniformlyDistributeChunksAcrossRecordBatches(schema, vecs.map((v) => v.data.concat()));
+}
+/** @ignore */
+function uniformlyDistributeChunksAcrossRecordBatches(schema, cols) {
+    const fields = [...schema.fields];
+    const batches = [];
+    const memo = { numBatches: cols.reduce((n, c) => Math.max(n, c.length), 0) };
+    let numBatches = 0, batchLength = 0;
+    let i = -1;
+    const numColumns = cols.length;
+    let child, children = [];
+    while (memo.numBatches-- > 0) {
+        for (batchLength = Number.POSITIVE_INFINITY, i = -1; ++i < numColumns;) {
+            children[i] = child = cols[i].shift();
+            batchLength = Math.min(batchLength, child ? child.length : batchLength);
+        }
+        if (Number.isFinite(batchLength)) {
+            children = distributeChildren(fields, batchLength, children, cols, memo);
+            if (batchLength > 0) {
+                batches[numBatches++] = makeData({
+                    type: new Struct(fields),
+                    length: batchLength,
+                    nullCount: 0,
+                    children: children.slice()
+                });
+            }
+        }
+    }
+    return [
+        schema = schema.assign(fields),
+        batches.map((data) => new RecordBatch(schema, data))
+    ];
+}
+/** @ignore */
+function distributeChildren(fields, batchLength, children, columns, memo) {
+    var _a;
+    const nullBitmapSize = ((batchLength + 63) & ~63) >> 3;
+    for (let i = -1, n = columns.length; ++i < n;) {
+        const child = children[i];
+        const length = child === null || child === void 0 ? void 0 : child.length;
+        if (length >= batchLength) {
+            if (length === batchLength) {
+                children[i] = child;
+            }
+            else {
+                children[i] = child.slice(0, batchLength);
+                memo.numBatches = Math.max(memo.numBatches, columns[i].unshift(child.slice(batchLength, length - batchLength)));
+            }
+        }
+        else {
+            const field = fields[i];
+            fields[i] = field.clone({ nullable: true });
+            children[i] = (_a = child === null || child === void 0 ? void 0 : child._changeLengthAndBackfillNullBitmap(batchLength)) !== null && _a !== void 0 ? _a : makeData({
+                type: field.type,
+                length: batchLength,
+                nullCount: batchLength,
+                nullBitmap: new Uint8Array(nullBitmapSize)
+            });
+        }
+    }
+    return children;
+}
+
+//# sourceMappingURL=recordbatch.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/util/recordbatch.mjs.map b/igv_component/node_modules/apache-arrow/util/recordbatch.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..f1c5301540ebf0e6524662d65fa0b5e9911ee180
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/recordbatch.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/recordbatch.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAGrB,OAAO,EAAQ,QAAQ,EAAE,MAAM,YAAY,CAAC;AAC5C,OAAO,EAAE,MAAM,EAAW,MAAM,YAAY,CAAC;AAE7C,OAAO,EAAE,WAAW,EAAE,MAAM,mBAAmB,CAAC;AAEhD,cAAc;AACd,MAAM,UAAU,kCAAkC,CAA0B,MAAiB,EAAE,IAA0B;IACrH,OAAO,4CAA4C,CAAI,MAAM,EAAE,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,CAAC,CAAC;AACrG,CAAC;AAED,cAAc;AACd,SAAS,4CAA4C,CAA0B,MAAiB,EAAE,IAA0B;IAExH,MAAM,MAAM,GAAG,CAAC,GAAG,MAAM,CAAC,MAAM,CAAC,CAAC;IAClC,MAAM,OAAO,GAAG,EAAuB,CAAC;IACxC,MAAM,IAAI,GAAG,EAAE,UAAU,EAAE,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,CAAC,MAAM,CAAC,EAAE,CAAC,CAAC,EAAE,CAAC;IAE7E,IAAI,UAAU,GAAG,CAAC,EAAE,WAAW,GAAG,CAAC,CAAC;IACpC,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC;IACX,MAAM,UAAU,GAAG,IAAI,CAAC,MAAM,CAAC;IAC/B,IAAI,KAAuB,EAAE,QAAQ,GAAuB,EAAE,CAAC;IAE/D,OAAO,IAAI,CAAC,UAAU,EAAE,GAAG,CAAC,EAAE;QAE1B,KAAK,WAAW,GAAG,MAAM,CAAC,iBAAiB,EAAE,CAAC,GAAG,CAAC,CAAC,EAAE,EAAE,CAAC,GAAG,UAAU,GAAG;YACpE,QAAQ,CAAC,CAAC,CAAC,GAAG,KAAK,GAAG,IAAI,CAAC,CAAC,CAAC,CAAC,KAAK,EAAG,CAAC;YACvC,WAAW,GAAG,IAAI,CAAC,GAAG,CAAC,WAAW,EAAE,KAAK,CAAC,CAAC,CAAC,KAAK,CAAC,MAAM,CAAC,CAAC,CAAC,WAAW,CAAC,CAAC;SAC3E;QAED,IAAI,MAAM,CAAC,QAAQ,CAAC,WAAW,CAAC,EAAE;YAC9B,QAAQ,GAAG,kBAAkB,CAAC,MAAM,EAAE,WAAW,EAAE,QAAQ,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC;YACzE,IAAI,WAAW,GAAG,CAAC,EAAE;gBACjB,OAAO,CAAC,UAAU,EAAE,CAAC,GAAG,QAAQ,CAAC;oBAC7B,IAAI,EAAE,IAAI,MAAM,CAAC,MAAM,CAAC;oBACxB,MAAM,EAAE,WAAW;oBACnB,SAAS,EAAE,CAAC;oBACZ,QAAQ,EAAE,QAAQ,CAAC,KAAK,EAAE;iBAC7B,CAAC,CAAC;aACN;SACJ;KACJ;IAED,OAAO;QACH,MAAM,GAAG,MAAM,CAAC,MAAM,CAAC,MAAM,CAAC;QAC9B,OAAO,CAAC,GAAG,CAAC,CAAC,IAAI,EAAE,EAAE,CAAC,IAAI,WAAW,CAAC,MAAM,EAAE,IAAI,CAAC,CAAC;KACvD,CAAC;AACN,CAAC;AAED,cAAc;AACd,SAAS,kBAAkB,CACvB,MAA2B,EAC3B,WAAmB,EACnB,QAA4B,EAC5B,OAA6B,EAC7B,IAA4B;;IAE5B,MAAM,cAAc,GAAG,CAAC,CAAC,WAAW,GAAG,EAAE,CAAC,GAAG,CAAC,EAAE,CAAC,IAAI,CAAC,CAAC;IACvD,KAAK,IAAI,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC,GAAG,OAAO,CAAC,MAAM,EAAE,EAAE,CAAC,GAAG,CAAC,GAAG;QAC3C,MAAM,KAAK,GAAG,QAAQ,CAAC,CAAC,CAAC,CAAC;QAC1B,MAAM,MAAM,GAAG,KAAK,aAAL,KAAK,uBAAL,KAAK,CAAE,MAAM,CAAC;QAC7B,IAAI,MAAM,IAAI,WAAW,EAAE;YACvB,IAAI,MAAM,KAAK,WAAW,EAAE;gBACxB,QAAQ,CAAC,CAAC,CAAC,GAAG,KAAK,CAAC;aACvB;iBAAM;gBACH,QAAQ,CAAC,CAAC,CAAC,GAAG,KAAK,CAAC,KAAK,CAAC,CAAC,EAAE,WAAW,CAAC,CAAC;gBAC1C,IAAI,CAAC,UAAU,GAAG,IAAI,CAAC,GAAG,CAAC,IAAI,CAAC,UAAU,EAAE,OAAO,CAAC,CAAC,CAAC,CAAC,OAAO,CAC1D,KAAK,CAAC,KAAK,CAAC,WAAW,EAAE,MAAM,GAAG,WAAW,CAAC,CACjD,CAAC,CAAC;aACN;SACJ;aAAM;YACH,MAAM,KAAK,GAAG,MAAM,CAAC,CAAC,CAAC,CAAC;YACxB,MAAM,CAAC,CAAC,CAAC,GAAG,KAAK,CAAC,KAAK,CAAC,EAAE,QAAQ,EAAE,IAAI,EAAE,CAAC,CAAC;YAC5C,QAAQ,CAAC,CAAC,CAAC,GAAG,MAAA,KAAK,aAAL,KAAK,uBAAL,KAAK,CAAE,kCAAkC,CAAC,WAAW,CAAC,mCAAI,QAAQ,CAAC;gBAC7E,IAAI,EAAE,KAAK,CAAC,IAAI;gBAChB,MAAM,EAAE,WAAW;gBACnB,SAAS,EAAE,WAAW;gBACtB,UAAU,EAAE,IAAI,UAAU,CAAC,cAAc,CAAC;aAC7C,CAAqB,CAAC;SAC1B;KACJ;IACD,OAAO,QAAQ,CAAC;AACpB,CAAC","file":"recordbatch.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/utf8.d.ts b/igv_component/node_modules/apache-arrow/util/utf8.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..78a62fd181dae95462be8a4a3d6f7aaefad34457
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/utf8.d.ts
@@ -0,0 +1,4 @@
+/** @ignore */
+export declare const decodeUtf8: (buffer?: BufferSource) => string;
+/** @ignore */
+export declare const encodeUtf8: (value?: string) => Uint8Array;
diff --git a/igv_component/node_modules/apache-arrow/util/utf8.d.ts.map b/igv_component/node_modules/apache-arrow/util/utf8.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..f4d803f3959765b10074ae75f49528e362240f51
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/utf8.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/utf8.ts"],"names":[],"mappings":"AAkBA,cAAc;AACd,eAAO,MAAM,UAAU,YAAa,YAAY,WAA2B,CAAC;AAG5E,cAAc;AACd,eAAO,MAAM,UAAU,WAAY,MAAM,eAA0B,CAAC","file":"utf8.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/utf8.js b/igv_component/node_modules/apache-arrow/util/utf8.js
new file mode 100644
index 0000000000000000000000000000000000000000..9d2832a1078a121ad93f26d93ff73331b54d9494
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/utf8.js
@@ -0,0 +1,29 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.encodeUtf8 = exports.decodeUtf8 = void 0;
+const decoder = new TextDecoder('utf-8');
+/** @ignore */
+const decodeUtf8 = (buffer) => decoder.decode(buffer);
+exports.decodeUtf8 = decodeUtf8;
+const encoder = new TextEncoder();
+/** @ignore */
+const encodeUtf8 = (value) => encoder.encode(value);
+exports.encodeUtf8 = encodeUtf8;
+
+//# sourceMappingURL=utf8.js.map
diff --git a/igv_component/node_modules/apache-arrow/util/utf8.js.map b/igv_component/node_modules/apache-arrow/util/utf8.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..ead2e20134bafac80bf86b4a5e391e4b0bde1c7d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/utf8.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/utf8.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,MAAM,OAAO,GAAG,IAAI,WAAW,CAAC,OAAO,CAAC,CAAC;AACzC,cAAc;AACP,MAAM,UAAU,GAAG,CAAC,MAAqB,EAAE,EAAE,CAAC,OAAO,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC;AAA/D,QAAA,UAAU,cAAqD;AAE5E,MAAM,OAAO,GAAG,IAAI,WAAW,EAAE,CAAC;AAClC,cAAc;AACP,MAAM,UAAU,GAAG,CAAC,KAAc,EAAE,EAAE,CAAC,OAAO,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC;AAAvD,QAAA,UAAU,cAA6C","file":"utf8.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/utf8.mjs b/igv_component/node_modules/apache-arrow/util/utf8.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..64b769f9d73aeaee791ce4c0fd6bd11375f64bf7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/utf8.mjs
@@ -0,0 +1,24 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+const decoder = new TextDecoder('utf-8');
+/** @ignore */
+export const decodeUtf8 = (buffer) => decoder.decode(buffer);
+const encoder = new TextEncoder();
+/** @ignore */
+export const encodeUtf8 = (value) => encoder.encode(value);
+
+//# sourceMappingURL=utf8.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/util/utf8.mjs.map b/igv_component/node_modules/apache-arrow/util/utf8.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..06e75ebea8011f48b93ac4f9da0fb07ade339ef0
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/utf8.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/utf8.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,MAAM,OAAO,GAAG,IAAI,WAAW,CAAC,OAAO,CAAC,CAAC;AACzC,cAAc;AACd,MAAM,CAAC,MAAM,UAAU,GAAG,CAAC,MAAqB,EAAE,EAAE,CAAC,OAAO,CAAC,MAAM,CAAC,MAAM,CAAC,CAAC;AAE5E,MAAM,OAAO,GAAG,IAAI,WAAW,EAAE,CAAC;AAClC,cAAc;AACd,MAAM,CAAC,MAAM,UAAU,GAAG,CAAC,KAAc,EAAE,EAAE,CAAC,OAAO,CAAC,MAAM,CAAC,KAAK,CAAC,CAAC","file":"utf8.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/vector.d.ts b/igv_component/node_modules/apache-arrow/util/vector.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..7d206643c49578c7f0433eae585773007a3e5d42
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/vector.d.ts
@@ -0,0 +1,16 @@
+/** @ignore */
+declare type RangeLike = {
+    length: number;
+    stride?: number;
+};
+/** @ignore */
+declare type ClampThen<T extends RangeLike> = (source: T, index: number) => any;
+/** @ignore */
+declare type ClampRangeThen<T extends RangeLike> = (source: T, offset: number, length: number) => any;
+export declare function clampIndex<T extends RangeLike>(source: T, index: number): number;
+export declare function clampIndex<T extends RangeLike, N extends ClampThen<T> = ClampThen<T>>(source: T, index: number, then: N): ReturnType<N>;
+export declare function clampRange<T extends RangeLike>(source: T, begin: number | undefined, end: number | undefined): [number, number];
+export declare function clampRange<T extends RangeLike, N extends ClampRangeThen<T> = ClampRangeThen<T>>(source: T, begin: number | undefined, end: number | undefined, then: N): ReturnType<N>;
+/** @ignore */
+export declare function createElementComparator(search: any): (value: any) => boolean;
+export {};
diff --git a/igv_component/node_modules/apache-arrow/util/vector.d.ts.map b/igv_component/node_modules/apache-arrow/util/vector.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..98fb09c3dd78b2caa2963312d16dc4587ebc52ac
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/vector.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["util/vector.ts"],"names":[],"mappings":"AAsBA,cAAc;AACd,aAAK,SAAS,GAAG;IAAE,MAAM,EAAE,MAAM,CAAC;IAAC,MAAM,CAAC,EAAE,MAAM,CAAA;CAAE,CAAC;AACrD,cAAc;AACd,aAAK,SAAS,CAAC,CAAC,SAAS,SAAS,IAAI,CAAC,MAAM,EAAE,CAAC,EAAE,KAAK,EAAE,MAAM,KAAK,GAAG,CAAC;AACxE,cAAc;AACd,aAAK,cAAc,CAAC,CAAC,SAAS,SAAS,IAAI,CAAC,MAAM,EAAE,CAAC,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,KAAK,GAAG,CAAC;AAE9F,wBAAgB,UAAU,CAAC,CAAC,SAAS,SAAS,EAAE,MAAM,EAAE,CAAC,EAAE,KAAK,EAAE,MAAM,GAAG,MAAM,CAAC;AAClF,wBAAgB,UAAU,CAAC,CAAC,SAAS,SAAS,EAAE,CAAC,SAAS,SAAS,CAAC,CAAC,CAAC,GAAG,SAAS,CAAC,CAAC,CAAC,EAAE,MAAM,EAAE,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,IAAI,EAAE,CAAC,GAAG,UAAU,CAAC,CAAC,CAAC,CAAC;AAUzI,wBAAgB,UAAU,CAAC,CAAC,SAAS,SAAS,EAAE,MAAM,EAAE,CAAC,EAAE,KAAK,EAAE,MAAM,GAAG,SAAS,EAAE,GAAG,EAAE,MAAM,GAAG,SAAS,GAAG,CAAC,MAAM,EAAE,MAAM,CAAC,CAAC;AACjI,wBAAgB,UAAU,CAAC,CAAC,SAAS,SAAS,EAAE,CAAC,SAAS,cAAc,CAAC,CAAC,CAAC,GAAG,cAAc,CAAC,CAAC,CAAC,EAAE,MAAM,EAAE,CAAC,EAAE,KAAK,EAAE,MAAM,GAAG,SAAS,EAAE,GAAG,EAAE,MAAM,GAAG,SAAS,EAAE,IAAI,EAAE,CAAC,GAAG,UAAU,CAAC,CAAC,CAAC,CAAC;AAuBxL,cAAc;AACd,wBAAgB,uBAAuB,CAAC,MAAM,EAAE,GAAG,2BA4BlD","file":"vector.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/vector.js b/igv_component/node_modules/apache-arrow/util/vector.js
new file mode 100644
index 0000000000000000000000000000000000000000..d4c81230f3c9aa010bf7466761d2f0ea44650421
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/vector.js
@@ -0,0 +1,191 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.createElementComparator = exports.clampRange = exports.clampIndex = void 0;
+const vector_js_1 = require("../vector.js");
+const map_js_1 = require("../row/map.js");
+const struct_js_1 = require("../row/struct.js");
+const buffer_js_1 = require("../util/buffer.js");
+/** @ignore */
+function clampIndex(source, index, then) {
+    const length = source.length;
+    const adjust = index > -1 ? index : (length + (index % length));
+    return then ? then(source, adjust) : adjust;
+}
+exports.clampIndex = clampIndex;
+/** @ignore */
+let tmp;
+/** @ignore */
+function clampRange(source, begin, end, then) {
+    // Adjust args similar to Array.prototype.slice. Normalize begin/end to
+    // clamp between 0 and length, and wrap around on negative indices, e.g.
+    // slice(-1, 5) or slice(5, -1)
+    const { length: len = 0 } = source;
+    let lhs = typeof begin !== 'number' ? 0 : begin;
+    let rhs = typeof end !== 'number' ? len : end;
+    // wrap around on negative start/end positions
+    (lhs < 0) && (lhs = ((lhs % len) + len) % len);
+    (rhs < 0) && (rhs = ((rhs % len) + len) % len);
+    // ensure lhs <= rhs
+    (rhs < lhs) && (tmp = lhs, lhs = rhs, rhs = tmp);
+    // ensure rhs <= length
+    (rhs > len) && (rhs = len);
+    return then ? then(source, lhs, rhs) : [lhs, rhs];
+}
+exports.clampRange = clampRange;
+const isNaNFast = (value) => value !== value;
+/** @ignore */
+function createElementComparator(search) {
+    const typeofSearch = typeof search;
+    // Compare primitives
+    if (typeofSearch !== 'object' || search === null) {
+        // Compare NaN
+        if (isNaNFast(search)) {
+            return isNaNFast;
+        }
+        return (value) => value === search;
+    }
+    // Compare Dates
+    if (search instanceof Date) {
+        const valueOfSearch = search.valueOf();
+        return (value) => value instanceof Date ? (value.valueOf() === valueOfSearch) : false;
+    }
+    // Compare TypedArrays
+    if (ArrayBuffer.isView(search)) {
+        return (value) => value ? (0, buffer_js_1.compareArrayLike)(search, value) : false;
+    }
+    // Compare Maps and Rows
+    if (search instanceof Map) {
+        return createMapComparator(search);
+    }
+    // Compare Array-likes
+    if (Array.isArray(search)) {
+        return createArrayLikeComparator(search);
+    }
+    // Compare Vectors
+    if (search instanceof vector_js_1.Vector) {
+        return createVectorComparator(search);
+    }
+    return createObjectComparator(search, true);
+    // Compare non-empty Objects
+    // return createObjectComparator(search, search instanceof Proxy);
+}
+exports.createElementComparator = createElementComparator;
+/** @ignore */
+function createArrayLikeComparator(lhs) {
+    const comparators = [];
+    for (let i = -1, n = lhs.length; ++i < n;) {
+        comparators[i] = createElementComparator(lhs[i]);
+    }
+    return createSubElementsComparator(comparators);
+}
+/** @ignore */
+function createMapComparator(lhs) {
+    let i = -1;
+    const comparators = [];
+    for (const v of lhs.values())
+        comparators[++i] = createElementComparator(v);
+    return createSubElementsComparator(comparators);
+}
+/** @ignore */
+function createVectorComparator(lhs) {
+    const comparators = [];
+    for (let i = -1, n = lhs.length; ++i < n;) {
+        comparators[i] = createElementComparator(lhs.get(i));
+    }
+    return createSubElementsComparator(comparators);
+}
+/** @ignore */
+function createObjectComparator(lhs, allowEmpty = false) {
+    const keys = Object.keys(lhs);
+    // Only compare non-empty Objects
+    if (!allowEmpty && keys.length === 0) {
+        return () => false;
+    }
+    const comparators = [];
+    for (let i = -1, n = keys.length; ++i < n;) {
+        comparators[i] = createElementComparator(lhs[keys[i]]);
+    }
+    return createSubElementsComparator(comparators, keys);
+}
+function createSubElementsComparator(comparators, keys) {
+    return (rhs) => {
+        if (!rhs || typeof rhs !== 'object') {
+            return false;
+        }
+        switch (rhs.constructor) {
+            case Array: return compareArray(comparators, rhs);
+            case Map:
+                return compareObject(comparators, rhs, rhs.keys());
+            case map_js_1.MapRow:
+            case struct_js_1.StructRow:
+            case Object:
+            case undefined: // support `Object.create(null)` objects
+                return compareObject(comparators, rhs, keys || Object.keys(rhs));
+        }
+        return rhs instanceof vector_js_1.Vector ? compareVector(comparators, rhs) : false;
+    };
+}
+function compareArray(comparators, arr) {
+    const n = comparators.length;
+    if (arr.length !== n) {
+        return false;
+    }
+    for (let i = -1; ++i < n;) {
+        if (!(comparators[i](arr[i]))) {
+            return false;
+        }
+    }
+    return true;
+}
+function compareVector(comparators, vec) {
+    const n = comparators.length;
+    if (vec.length !== n) {
+        return false;
+    }
+    for (let i = -1; ++i < n;) {
+        if (!(comparators[i](vec.get(i)))) {
+            return false;
+        }
+    }
+    return true;
+}
+function compareObject(comparators, obj, keys) {
+    const lKeyItr = keys[Symbol.iterator]();
+    const rKeyItr = obj instanceof Map ? obj.keys() : Object.keys(obj)[Symbol.iterator]();
+    const rValItr = obj instanceof Map ? obj.values() : Object.values(obj)[Symbol.iterator]();
+    let i = 0;
+    const n = comparators.length;
+    let rVal = rValItr.next();
+    let lKey = lKeyItr.next();
+    let rKey = rKeyItr.next();
+    for (; i < n && !lKey.done && !rKey.done && !rVal.done; ++i, lKey = lKeyItr.next(), rKey = rKeyItr.next(), rVal = rValItr.next()) {
+        if (lKey.value !== rKey.value || !comparators[i](rVal.value)) {
+            break;
+        }
+    }
+    if (i === n && lKey.done && rKey.done && rVal.done) {
+        return true;
+    }
+    lKeyItr.return && lKeyItr.return();
+    rKeyItr.return && rKeyItr.return();
+    rValItr.return && rValItr.return();
+    return false;
+}
+
+//# sourceMappingURL=vector.js.map
diff --git a/igv_component/node_modules/apache-arrow/util/vector.js.map b/igv_component/node_modules/apache-arrow/util/vector.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..597cbe4a27541ba4bf48e9682af8160709da9fc6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/vector.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/util/vector.mjs b/igv_component/node_modules/apache-arrow/util/vector.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..06192a3ae5e195266482eb93ab6776cc409230cd
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/vector.mjs
@@ -0,0 +1,185 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Vector } from '../vector.mjs';
+import { MapRow } from '../row/map.mjs';
+import { StructRow } from '../row/struct.mjs';
+import { compareArrayLike } from '../util/buffer.mjs';
+/** @ignore */
+export function clampIndex(source, index, then) {
+    const length = source.length;
+    const adjust = index > -1 ? index : (length + (index % length));
+    return then ? then(source, adjust) : adjust;
+}
+/** @ignore */
+let tmp;
+/** @ignore */
+export function clampRange(source, begin, end, then) {
+    // Adjust args similar to Array.prototype.slice. Normalize begin/end to
+    // clamp between 0 and length, and wrap around on negative indices, e.g.
+    // slice(-1, 5) or slice(5, -1)
+    const { length: len = 0 } = source;
+    let lhs = typeof begin !== 'number' ? 0 : begin;
+    let rhs = typeof end !== 'number' ? len : end;
+    // wrap around on negative start/end positions
+    (lhs < 0) && (lhs = ((lhs % len) + len) % len);
+    (rhs < 0) && (rhs = ((rhs % len) + len) % len);
+    // ensure lhs <= rhs
+    (rhs < lhs) && (tmp = lhs, lhs = rhs, rhs = tmp);
+    // ensure rhs <= length
+    (rhs > len) && (rhs = len);
+    return then ? then(source, lhs, rhs) : [lhs, rhs];
+}
+const isNaNFast = (value) => value !== value;
+/** @ignore */
+export function createElementComparator(search) {
+    const typeofSearch = typeof search;
+    // Compare primitives
+    if (typeofSearch !== 'object' || search === null) {
+        // Compare NaN
+        if (isNaNFast(search)) {
+            return isNaNFast;
+        }
+        return (value) => value === search;
+    }
+    // Compare Dates
+    if (search instanceof Date) {
+        const valueOfSearch = search.valueOf();
+        return (value) => value instanceof Date ? (value.valueOf() === valueOfSearch) : false;
+    }
+    // Compare TypedArrays
+    if (ArrayBuffer.isView(search)) {
+        return (value) => value ? compareArrayLike(search, value) : false;
+    }
+    // Compare Maps and Rows
+    if (search instanceof Map) {
+        return createMapComparator(search);
+    }
+    // Compare Array-likes
+    if (Array.isArray(search)) {
+        return createArrayLikeComparator(search);
+    }
+    // Compare Vectors
+    if (search instanceof Vector) {
+        return createVectorComparator(search);
+    }
+    return createObjectComparator(search, true);
+    // Compare non-empty Objects
+    // return createObjectComparator(search, search instanceof Proxy);
+}
+/** @ignore */
+function createArrayLikeComparator(lhs) {
+    const comparators = [];
+    for (let i = -1, n = lhs.length; ++i < n;) {
+        comparators[i] = createElementComparator(lhs[i]);
+    }
+    return createSubElementsComparator(comparators);
+}
+/** @ignore */
+function createMapComparator(lhs) {
+    let i = -1;
+    const comparators = [];
+    for (const v of lhs.values())
+        comparators[++i] = createElementComparator(v);
+    return createSubElementsComparator(comparators);
+}
+/** @ignore */
+function createVectorComparator(lhs) {
+    const comparators = [];
+    for (let i = -1, n = lhs.length; ++i < n;) {
+        comparators[i] = createElementComparator(lhs.get(i));
+    }
+    return createSubElementsComparator(comparators);
+}
+/** @ignore */
+function createObjectComparator(lhs, allowEmpty = false) {
+    const keys = Object.keys(lhs);
+    // Only compare non-empty Objects
+    if (!allowEmpty && keys.length === 0) {
+        return () => false;
+    }
+    const comparators = [];
+    for (let i = -1, n = keys.length; ++i < n;) {
+        comparators[i] = createElementComparator(lhs[keys[i]]);
+    }
+    return createSubElementsComparator(comparators, keys);
+}
+function createSubElementsComparator(comparators, keys) {
+    return (rhs) => {
+        if (!rhs || typeof rhs !== 'object') {
+            return false;
+        }
+        switch (rhs.constructor) {
+            case Array: return compareArray(comparators, rhs);
+            case Map:
+                return compareObject(comparators, rhs, rhs.keys());
+            case MapRow:
+            case StructRow:
+            case Object:
+            case undefined: // support `Object.create(null)` objects
+                return compareObject(comparators, rhs, keys || Object.keys(rhs));
+        }
+        return rhs instanceof Vector ? compareVector(comparators, rhs) : false;
+    };
+}
+function compareArray(comparators, arr) {
+    const n = comparators.length;
+    if (arr.length !== n) {
+        return false;
+    }
+    for (let i = -1; ++i < n;) {
+        if (!(comparators[i](arr[i]))) {
+            return false;
+        }
+    }
+    return true;
+}
+function compareVector(comparators, vec) {
+    const n = comparators.length;
+    if (vec.length !== n) {
+        return false;
+    }
+    for (let i = -1; ++i < n;) {
+        if (!(comparators[i](vec.get(i)))) {
+            return false;
+        }
+    }
+    return true;
+}
+function compareObject(comparators, obj, keys) {
+    const lKeyItr = keys[Symbol.iterator]();
+    const rKeyItr = obj instanceof Map ? obj.keys() : Object.keys(obj)[Symbol.iterator]();
+    const rValItr = obj instanceof Map ? obj.values() : Object.values(obj)[Symbol.iterator]();
+    let i = 0;
+    const n = comparators.length;
+    let rVal = rValItr.next();
+    let lKey = lKeyItr.next();
+    let rKey = rKeyItr.next();
+    for (; i < n && !lKey.done && !rKey.done && !rVal.done; ++i, lKey = lKeyItr.next(), rKey = rKeyItr.next(), rVal = rValItr.next()) {
+        if (lKey.value !== rKey.value || !comparators[i](rVal.value)) {
+            break;
+        }
+    }
+    if (i === n && lKey.done && rKey.done && rVal.done) {
+        return true;
+    }
+    lKeyItr.return && lKeyItr.return();
+    rKeyItr.return && rKeyItr.return();
+    rValItr.return && rValItr.return();
+    return false;
+}
+
+//# sourceMappingURL=vector.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/util/vector.mjs.map b/igv_component/node_modules/apache-arrow/util/vector.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..6388eeedd6d368b8b054216e1c7264e99cde4cdf
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/util/vector.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/vector.d.ts b/igv_component/node_modules/apache-arrow/vector.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2c928b1aaab94940cdd210ef6a2a279fa03ca483
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/vector.d.ts
@@ -0,0 +1,173 @@
+import { DataType } from './type.js';
+import { Data, DataProps } from './data.js';
+import { BigIntArray, TypedArray, TypedArrayDataType } from './interfaces.js';
+export interface Vector<T extends DataType = any> {
+    readonly TType: T['TType'];
+    readonly TArray: T['TArray'];
+    readonly TValue: T['TValue'];
+    /**
+     * @see https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Symbol/isConcatSpreadable
+     */
+    [Symbol.isConcatSpreadable]: true;
+}
+/**
+ * Array-like data structure. Use the convenience method {@link makeVector} and {@link vectorFromArray} to create vectors.
+ */
+export declare class Vector<T extends DataType = any> {
+    constructor(input: readonly (Data<T> | Vector<T>)[]);
+    protected _offsets: number[] | Uint32Array;
+    protected _nullCount: number;
+    protected _byteLength: number;
+    /**
+     * The {@link DataType `DataType`} of this Vector.
+     */
+    readonly type: T;
+    /**
+     * The primitive {@link Data `Data`} instances for this Vector's elements.
+     */
+    readonly data: ReadonlyArray<Data<T>>;
+    /**
+     * The number of elements in this Vector.
+     */
+    readonly length: number;
+    /**
+     * The number of primitive values per Vector element.
+     */
+    readonly stride: number;
+    /**
+     * The number of child Vectors if this Vector is a nested dtype.
+     */
+    readonly numChildren: number;
+    /**
+     * The aggregate size (in bytes) of this Vector's buffers and/or child Vectors.
+     */
+    get byteLength(): number;
+    /**
+     * The number of null elements in this Vector.
+     */
+    get nullCount(): number;
+    /**
+     * The Array or TypedAray constructor used for the JS representation
+     *  of the element's values in {@link Vector.prototype.toArray `toArray()`}.
+     */
+    get ArrayType(): T['ArrayType'];
+    /**
+     * The name that should be printed when the Vector is logged in a message.
+     */
+    get [Symbol.toStringTag](): string;
+    /**
+     * The name of this Vector.
+     */
+    get VectorName(): string;
+    /**
+     * Check whether an element is null.
+     * @param index The index at which to read the validity bitmap.
+     */
+    isValid(index: number): boolean;
+    /**
+     * Get an element value by position.
+     * @param index The index of the element to read.
+     */
+    get(index: number): T['TValue'] | null;
+    /**
+     * Set an element value by position.
+     * @param index The index of the element to write.
+     * @param value The value to set.
+     */
+    set(index: number, value: T['TValue'] | null): void;
+    /**
+     * Retrieve the index of the first occurrence of a value in an Vector.
+     * @param element The value to locate in the Vector.
+     * @param offset The index at which to begin the search. If offset is omitted, the search starts at index 0.
+     */
+    indexOf(element: T['TValue'], offset?: number): number;
+    includes(element: T['TValue'], offset?: number): boolean;
+    /**
+     * Get the size in bytes of an element by index.
+     * @param index The index at which to get the byteLength.
+     */
+    getByteLength(index: number): number;
+    /**
+     * Iterator for the Vector's elements.
+     */
+    [Symbol.iterator](): IterableIterator<T['TValue'] | null>;
+    /**
+     * Combines two or more Vectors of the same type.
+     * @param others Additional Vectors to add to the end of this Vector.
+     */
+    concat(...others: Vector<T>[]): Vector<T>;
+    /**
+     * Return a zero-copy sub-section of this Vector.
+     * @param start The beginning of the specified portion of the Vector.
+     * @param end The end of the specified portion of the Vector. This is exclusive of the element at the index 'end'.
+     */
+    slice(begin?: number, end?: number): Vector<T>;
+    toJSON(): (T["TValue"] | null)[];
+    /**
+     * Return a JavaScript Array or TypedArray of the Vector's elements.
+     *
+     * @note If this Vector contains a single Data chunk and the Vector's type is a
+     *  primitive numeric type corresponding to one of the JavaScript TypedArrays, this
+     *  method returns a zero-copy slice of the underlying TypedArray values. If there's
+     *  more than one chunk, the resulting TypedArray will be a copy of the data from each
+     *  chunk's underlying TypedArray values.
+     *
+     * @returns An Array or TypedArray of the Vector's elements, based on the Vector's DataType.
+     */
+    toArray(): T['TArray'];
+    /**
+     * Returns a string representation of the Vector.
+     *
+     * @returns A string representation of the Vector.
+     */
+    toString(): string;
+    /**
+     * Returns a child Vector by name, or null if this Vector has no child with the given name.
+     * @param name The name of the child to retrieve.
+     */
+    getChild<R extends keyof T['TChildren']>(name: R): Vector<any> | null;
+    /**
+     * Returns a child Vector by index, or null if this Vector has no child at the supplied index.
+     * @param index The index of the child to retrieve.
+     */
+    getChildAt<R extends DataType = any>(index: number): Vector<R> | null;
+    get isMemoized(): boolean;
+    /**
+     * Adds memoization to the Vector's {@link get} method. For dictionary
+     * vectors, this method return a vector that memoizes only the dictionary
+     * values.
+     *
+     * Memoization is very useful when decoding a value is expensive such as
+     * Uft8. The memoization creates a cache of the size of the Vector and
+     * therfore increases memory usage.
+     *
+     * @returns A new vector that memoizes calls to {@link get}.
+     */
+    memoize(): MemoizedVector<T>;
+    /**
+     * Returns a vector without memoization of the {@link get} method. If this
+     * vector is not memoized, this method returns this vector.
+     *
+     * @returns A a vector without memoization.
+     */
+    unmemoize(): Vector<T>;
+    protected static [Symbol.toStringTag]: string;
+}
+declare class MemoizedVector<T extends DataType = any> extends Vector<T> {
+    constructor(vector: Vector<T>);
+}
+import * as dtypes from './type.js';
+/**
+ * Creates a Vector without data copies.
+ *
+ * @example
+ * ```ts
+ * const vector = makeVector(new Int32Array([1, 2, 3]));
+ * ```
+ */
+export declare function makeVector<T extends TypedArray | BigIntArray>(data: T | readonly T[]): Vector<TypedArrayDataType<T>>;
+export declare function makeVector<T extends DataView>(data: T | readonly T[]): Vector<dtypes.Int8>;
+export declare function makeVector<T extends DataType>(data: Data<T> | readonly Data<T>[]): Vector<T>;
+export declare function makeVector<T extends DataType>(data: Vector<T> | readonly Vector<T>[]): Vector<T>;
+export declare function makeVector<T extends DataType>(data: DataProps<T> | readonly DataProps<T>[]): Vector<T>;
+export {};
diff --git a/igv_component/node_modules/apache-arrow/vector.d.ts.map b/igv_component/node_modules/apache-arrow/vector.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..55d8386a734a452d819b8e9f8df3b2a874b93c27
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/vector.d.ts.map
@@ -0,0 +1 @@
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diff --git a/igv_component/node_modules/apache-arrow/vector.js b/igv_component/node_modules/apache-arrow/vector.js
new file mode 100644
index 0000000000000000000000000000000000000000..f1b8fef08f538184a1a5bdde025c2653d6fd927d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/vector.js
@@ -0,0 +1,399 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+var _a;
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.makeVector = exports.Vector = void 0;
+const tslib_1 = require("tslib");
+const enum_js_1 = require("./enum.js");
+const vector_js_1 = require("./util/vector.js");
+const type_js_1 = require("./type.js");
+const data_js_1 = require("./data.js");
+const chunk_js_1 = require("./util/chunk.js");
+const compat_js_1 = require("./util/compat.js");
+const get_js_1 = require("./visitor/get.js");
+const set_js_1 = require("./visitor/set.js");
+const indexof_js_1 = require("./visitor/indexof.js");
+const iterator_js_1 = require("./visitor/iterator.js");
+const bytelength_js_1 = require("./visitor/bytelength.js");
+const visitorsByTypeId = {};
+const vectorPrototypesByTypeId = {};
+/**
+ * Array-like data structure. Use the convenience method {@link makeVector} and {@link vectorFromArray} to create vectors.
+ */
+class Vector {
+    constructor(input) {
+        var _b, _c, _d;
+        const data = input[0] instanceof Vector
+            ? input.flatMap(x => x.data)
+            : input;
+        if (data.length === 0 || data.some((x) => !(x instanceof data_js_1.Data))) {
+            throw new TypeError('Vector constructor expects an Array of Data instances.');
+        }
+        const type = (_b = data[0]) === null || _b === void 0 ? void 0 : _b.type;
+        switch (data.length) {
+            case 0:
+                this._offsets = [0];
+                break;
+            case 1: {
+                // special case for unchunked vectors
+                const { get, set, indexOf, byteLength } = visitorsByTypeId[type.typeId];
+                const unchunkedData = data[0];
+                this.isValid = (index) => (0, chunk_js_1.isChunkedValid)(unchunkedData, index);
+                this.get = (index) => get(unchunkedData, index);
+                this.set = (index, value) => set(unchunkedData, index, value);
+                this.indexOf = (index) => indexOf(unchunkedData, index);
+                this.getByteLength = (index) => byteLength(unchunkedData, index);
+                this._offsets = [0, unchunkedData.length];
+                break;
+            }
+            default:
+                Object.setPrototypeOf(this, vectorPrototypesByTypeId[type.typeId]);
+                this._offsets = (0, chunk_js_1.computeChunkOffsets)(data);
+                break;
+        }
+        this.data = data;
+        this.type = type;
+        this.stride = (0, type_js_1.strideForType)(type);
+        this.numChildren = (_d = (_c = type.children) === null || _c === void 0 ? void 0 : _c.length) !== null && _d !== void 0 ? _d : 0;
+        this.length = this._offsets[this._offsets.length - 1];
+    }
+    /**
+     * The aggregate size (in bytes) of this Vector's buffers and/or child Vectors.
+     */
+    get byteLength() {
+        if (this._byteLength === -1) {
+            this._byteLength = this.data.reduce((byteLength, data) => byteLength + data.byteLength, 0);
+        }
+        return this._byteLength;
+    }
+    /**
+     * The number of null elements in this Vector.
+     */
+    get nullCount() {
+        if (this._nullCount === -1) {
+            this._nullCount = (0, chunk_js_1.computeChunkNullCounts)(this.data);
+        }
+        return this._nullCount;
+    }
+    /**
+     * The Array or TypedAray constructor used for the JS representation
+     *  of the element's values in {@link Vector.prototype.toArray `toArray()`}.
+     */
+    get ArrayType() { return this.type.ArrayType; }
+    /**
+     * The name that should be printed when the Vector is logged in a message.
+     */
+    get [Symbol.toStringTag]() {
+        return `${this.VectorName}<${this.type[Symbol.toStringTag]}>`;
+    }
+    /**
+     * The name of this Vector.
+     */
+    get VectorName() { return `${enum_js_1.Type[this.type.typeId]}Vector`; }
+    /**
+     * Check whether an element is null.
+     * @param index The index at which to read the validity bitmap.
+     */
+    // @ts-ignore
+    isValid(index) { return false; }
+    /**
+     * Get an element value by position.
+     * @param index The index of the element to read.
+     */
+    // @ts-ignore
+    get(index) { return null; }
+    /**
+     * Set an element value by position.
+     * @param index The index of the element to write.
+     * @param value The value to set.
+     */
+    // @ts-ignore
+    set(index, value) { return; }
+    /**
+     * Retrieve the index of the first occurrence of a value in an Vector.
+     * @param element The value to locate in the Vector.
+     * @param offset The index at which to begin the search. If offset is omitted, the search starts at index 0.
+     */
+    // @ts-ignore
+    indexOf(element, offset) { return -1; }
+    includes(element, offset) { return this.indexOf(element, offset) > 0; }
+    /**
+     * Get the size in bytes of an element by index.
+     * @param index The index at which to get the byteLength.
+     */
+    // @ts-ignore
+    getByteLength(index) { return 0; }
+    /**
+     * Iterator for the Vector's elements.
+     */
+    [Symbol.iterator]() {
+        return iterator_js_1.instance.visit(this);
+    }
+    /**
+     * Combines two or more Vectors of the same type.
+     * @param others Additional Vectors to add to the end of this Vector.
+     */
+    concat(...others) {
+        return new Vector(this.data.concat(others.flatMap((x) => x.data).flat(Number.POSITIVE_INFINITY)));
+    }
+    /**
+     * Return a zero-copy sub-section of this Vector.
+     * @param start The beginning of the specified portion of the Vector.
+     * @param end The end of the specified portion of the Vector. This is exclusive of the element at the index 'end'.
+     */
+    slice(begin, end) {
+        return new Vector((0, vector_js_1.clampRange)(this, begin, end, ({ data, _offsets }, begin, end) => (0, chunk_js_1.sliceChunks)(data, _offsets, begin, end)));
+    }
+    toJSON() { return [...this]; }
+    /**
+     * Return a JavaScript Array or TypedArray of the Vector's elements.
+     *
+     * @note If this Vector contains a single Data chunk and the Vector's type is a
+     *  primitive numeric type corresponding to one of the JavaScript TypedArrays, this
+     *  method returns a zero-copy slice of the underlying TypedArray values. If there's
+     *  more than one chunk, the resulting TypedArray will be a copy of the data from each
+     *  chunk's underlying TypedArray values.
+     *
+     * @returns An Array or TypedArray of the Vector's elements, based on the Vector's DataType.
+     */
+    toArray() {
+        const { type, data, length, stride, ArrayType } = this;
+        // Fast case, return subarray if possible
+        switch (type.typeId) {
+            case enum_js_1.Type.Int:
+            case enum_js_1.Type.Float:
+            case enum_js_1.Type.Decimal:
+            case enum_js_1.Type.Time:
+            case enum_js_1.Type.Timestamp:
+                switch (data.length) {
+                    case 0: return new ArrayType();
+                    case 1: return data[0].values.subarray(0, length * stride);
+                    default: return data.reduce((memo, { values, length: chunk_length }) => {
+                        memo.array.set(values.subarray(0, chunk_length * stride), memo.offset);
+                        memo.offset += chunk_length * stride;
+                        return memo;
+                    }, { array: new ArrayType(length * stride), offset: 0 }).array;
+                }
+        }
+        // Otherwise if not primitive, slow copy
+        return [...this];
+    }
+    /**
+     * Returns a string representation of the Vector.
+     *
+     * @returns A string representation of the Vector.
+     */
+    toString() {
+        return `[${[...this].join(',')}]`;
+    }
+    /**
+     * Returns a child Vector by name, or null if this Vector has no child with the given name.
+     * @param name The name of the child to retrieve.
+     */
+    getChild(name) {
+        var _b;
+        return this.getChildAt((_b = this.type.children) === null || _b === void 0 ? void 0 : _b.findIndex((f) => f.name === name));
+    }
+    /**
+     * Returns a child Vector by index, or null if this Vector has no child at the supplied index.
+     * @param index The index of the child to retrieve.
+     */
+    getChildAt(index) {
+        if (index > -1 && index < this.numChildren) {
+            return new Vector(this.data.map(({ children }) => children[index]));
+        }
+        return null;
+    }
+    get isMemoized() {
+        if (type_js_1.DataType.isDictionary(this.type)) {
+            return this.data[0].dictionary.isMemoized;
+        }
+        return false;
+    }
+    /**
+     * Adds memoization to the Vector's {@link get} method. For dictionary
+     * vectors, this method return a vector that memoizes only the dictionary
+     * values.
+     *
+     * Memoization is very useful when decoding a value is expensive such as
+     * Uft8. The memoization creates a cache of the size of the Vector and
+     * therfore increases memory usage.
+     *
+     * @returns A new vector that memoizes calls to {@link get}.
+     */
+    memoize() {
+        if (type_js_1.DataType.isDictionary(this.type)) {
+            const dictionary = new MemoizedVector(this.data[0].dictionary);
+            const newData = this.data.map((data) => {
+                const cloned = data.clone();
+                cloned.dictionary = dictionary;
+                return cloned;
+            });
+            return new Vector(newData);
+        }
+        return new MemoizedVector(this);
+    }
+    /**
+     * Returns a vector without memoization of the {@link get} method. If this
+     * vector is not memoized, this method returns this vector.
+     *
+     * @returns A a vector without memoization.
+     */
+    unmemoize() {
+        if (type_js_1.DataType.isDictionary(this.type) && this.isMemoized) {
+            const dictionary = this.data[0].dictionary.unmemoize();
+            const newData = this.data.map((data) => {
+                const newData = data.clone();
+                newData.dictionary = dictionary;
+                return newData;
+            });
+            return new Vector(newData);
+        }
+        return this;
+    }
+}
+exports.Vector = Vector;
+_a = Symbol.toStringTag;
+// Initialize this static property via an IIFE so bundlers don't tree-shake
+// out this logic, but also so we're still compliant with `"sideEffects": false`
+Vector[_a] = ((proto) => {
+    proto.type = type_js_1.DataType.prototype;
+    proto.data = [];
+    proto.length = 0;
+    proto.stride = 1;
+    proto.numChildren = 0;
+    proto._nullCount = -1;
+    proto._byteLength = -1;
+    proto._offsets = new Uint32Array([0]);
+    proto[Symbol.isConcatSpreadable] = true;
+    const typeIds = Object.keys(enum_js_1.Type)
+        .map((T) => enum_js_1.Type[T])
+        .filter((T) => typeof T === 'number' && T !== enum_js_1.Type.NONE);
+    for (const typeId of typeIds) {
+        const get = get_js_1.instance.getVisitFnByTypeId(typeId);
+        const set = set_js_1.instance.getVisitFnByTypeId(typeId);
+        const indexOf = indexof_js_1.instance.getVisitFnByTypeId(typeId);
+        const byteLength = bytelength_js_1.instance.getVisitFnByTypeId(typeId);
+        visitorsByTypeId[typeId] = { get, set, indexOf, byteLength };
+        vectorPrototypesByTypeId[typeId] = Object.create(proto, {
+            ['isValid']: { value: (0, chunk_js_1.wrapChunkedCall1)(chunk_js_1.isChunkedValid) },
+            ['get']: { value: (0, chunk_js_1.wrapChunkedCall1)(get_js_1.instance.getVisitFnByTypeId(typeId)) },
+            ['set']: { value: (0, chunk_js_1.wrapChunkedCall2)(set_js_1.instance.getVisitFnByTypeId(typeId)) },
+            ['indexOf']: { value: (0, chunk_js_1.wrapChunkedIndexOf)(indexof_js_1.instance.getVisitFnByTypeId(typeId)) },
+            ['getByteLength']: { value: (0, chunk_js_1.wrapChunkedCall1)(bytelength_js_1.instance.getVisitFnByTypeId(typeId)) },
+        });
+    }
+    return 'Vector';
+})(Vector.prototype);
+class MemoizedVector extends Vector {
+    constructor(vector) {
+        super(vector.data);
+        const get = this.get;
+        const set = this.set;
+        const slice = this.slice;
+        const cache = new Array(this.length);
+        Object.defineProperty(this, 'get', {
+            value(index) {
+                const cachedValue = cache[index];
+                if (cachedValue !== undefined) {
+                    return cachedValue;
+                }
+                const value = get.call(this, index);
+                cache[index] = value;
+                return value;
+            }
+        });
+        Object.defineProperty(this, 'set', {
+            value(index, value) {
+                set.call(this, index, value);
+                cache[index] = value;
+            }
+        });
+        Object.defineProperty(this, 'slice', {
+            value: (begin, end) => new MemoizedVector(slice.call(this, begin, end))
+        });
+        Object.defineProperty(this, 'isMemoized', { value: true });
+        Object.defineProperty(this, 'unmemoize', {
+            value: () => new Vector(this.data)
+        });
+        Object.defineProperty(this, 'memoize', {
+            value: () => this
+        });
+    }
+}
+const dtypes = tslib_1.__importStar(require("./type.js"));
+function makeVector(init) {
+    if (init) {
+        if (init instanceof data_js_1.Data) {
+            return new Vector([init]);
+        }
+        if (init instanceof Vector) {
+            return new Vector(init.data);
+        }
+        if (init.type instanceof type_js_1.DataType) {
+            return new Vector([(0, data_js_1.makeData)(init)]);
+        }
+        if (Array.isArray(init)) {
+            return new Vector(init.flatMap(v => unwrapInputs(v)));
+        }
+        if (ArrayBuffer.isView(init)) {
+            if (init instanceof DataView) {
+                init = new Uint8Array(init.buffer);
+            }
+            const props = { offset: 0, length: init.length, nullCount: 0, data: init };
+            if (init instanceof Int8Array) {
+                return new Vector([(0, data_js_1.makeData)(Object.assign(Object.assign({}, props), { type: new dtypes.Int8 }))]);
+            }
+            if (init instanceof Int16Array) {
+                return new Vector([(0, data_js_1.makeData)(Object.assign(Object.assign({}, props), { type: new dtypes.Int16 }))]);
+            }
+            if (init instanceof Int32Array) {
+                return new Vector([(0, data_js_1.makeData)(Object.assign(Object.assign({}, props), { type: new dtypes.Int32 }))]);
+            }
+            if (init instanceof compat_js_1.BigInt64Array) {
+                return new Vector([(0, data_js_1.makeData)(Object.assign(Object.assign({}, props), { type: new dtypes.Int64 }))]);
+            }
+            if (init instanceof Uint8Array || init instanceof Uint8ClampedArray) {
+                return new Vector([(0, data_js_1.makeData)(Object.assign(Object.assign({}, props), { type: new dtypes.Uint8 }))]);
+            }
+            if (init instanceof Uint16Array) {
+                return new Vector([(0, data_js_1.makeData)(Object.assign(Object.assign({}, props), { type: new dtypes.Uint16 }))]);
+            }
+            if (init instanceof Uint32Array) {
+                return new Vector([(0, data_js_1.makeData)(Object.assign(Object.assign({}, props), { type: new dtypes.Uint32 }))]);
+            }
+            if (init instanceof compat_js_1.BigUint64Array) {
+                return new Vector([(0, data_js_1.makeData)(Object.assign(Object.assign({}, props), { type: new dtypes.Uint64 }))]);
+            }
+            if (init instanceof Float32Array) {
+                return new Vector([(0, data_js_1.makeData)(Object.assign(Object.assign({}, props), { type: new dtypes.Float32 }))]);
+            }
+            if (init instanceof Float64Array) {
+                return new Vector([(0, data_js_1.makeData)(Object.assign(Object.assign({}, props), { type: new dtypes.Float64 }))]);
+            }
+            throw new Error('Unrecognized input');
+        }
+    }
+    throw new Error('Unrecognized input');
+}
+exports.makeVector = makeVector;
+function unwrapInputs(x) {
+    return x instanceof data_js_1.Data ? [x] : (x instanceof Vector ? x.data : makeVector(x).data);
+}
+
+//# sourceMappingURL=vector.js.map
diff --git a/igv_component/node_modules/apache-arrow/vector.js.map b/igv_component/node_modules/apache-arrow/vector.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..dfbac512e798c5c0a5c92e6b56ee3e9056208fe3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/vector.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/vector.mjs b/igv_component/node_modules/apache-arrow/vector.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..f2cc3fc4ce7f6f55ef86ad421494f9c4778cc485
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/vector.mjs
@@ -0,0 +1,393 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+var _a;
+import { Type } from './enum.mjs';
+import { clampRange } from './util/vector.mjs';
+import { DataType, strideForType } from './type.mjs';
+import { Data, makeData } from './data.mjs';
+import { isChunkedValid, computeChunkOffsets, computeChunkNullCounts, sliceChunks, wrapChunkedCall1, wrapChunkedCall2, wrapChunkedIndexOf, } from './util/chunk.mjs';
+import { BigInt64Array, BigUint64Array } from './util/compat.mjs';
+import { instance as getVisitor } from './visitor/get.mjs';
+import { instance as setVisitor } from './visitor/set.mjs';
+import { instance as indexOfVisitor } from './visitor/indexof.mjs';
+import { instance as iteratorVisitor } from './visitor/iterator.mjs';
+import { instance as byteLengthVisitor } from './visitor/bytelength.mjs';
+const visitorsByTypeId = {};
+const vectorPrototypesByTypeId = {};
+/**
+ * Array-like data structure. Use the convenience method {@link makeVector} and {@link vectorFromArray} to create vectors.
+ */
+export class Vector {
+    constructor(input) {
+        var _b, _c, _d;
+        const data = input[0] instanceof Vector
+            ? input.flatMap(x => x.data)
+            : input;
+        if (data.length === 0 || data.some((x) => !(x instanceof Data))) {
+            throw new TypeError('Vector constructor expects an Array of Data instances.');
+        }
+        const type = (_b = data[0]) === null || _b === void 0 ? void 0 : _b.type;
+        switch (data.length) {
+            case 0:
+                this._offsets = [0];
+                break;
+            case 1: {
+                // special case for unchunked vectors
+                const { get, set, indexOf, byteLength } = visitorsByTypeId[type.typeId];
+                const unchunkedData = data[0];
+                this.isValid = (index) => isChunkedValid(unchunkedData, index);
+                this.get = (index) => get(unchunkedData, index);
+                this.set = (index, value) => set(unchunkedData, index, value);
+                this.indexOf = (index) => indexOf(unchunkedData, index);
+                this.getByteLength = (index) => byteLength(unchunkedData, index);
+                this._offsets = [0, unchunkedData.length];
+                break;
+            }
+            default:
+                Object.setPrototypeOf(this, vectorPrototypesByTypeId[type.typeId]);
+                this._offsets = computeChunkOffsets(data);
+                break;
+        }
+        this.data = data;
+        this.type = type;
+        this.stride = strideForType(type);
+        this.numChildren = (_d = (_c = type.children) === null || _c === void 0 ? void 0 : _c.length) !== null && _d !== void 0 ? _d : 0;
+        this.length = this._offsets[this._offsets.length - 1];
+    }
+    /**
+     * The aggregate size (in bytes) of this Vector's buffers and/or child Vectors.
+     */
+    get byteLength() {
+        if (this._byteLength === -1) {
+            this._byteLength = this.data.reduce((byteLength, data) => byteLength + data.byteLength, 0);
+        }
+        return this._byteLength;
+    }
+    /**
+     * The number of null elements in this Vector.
+     */
+    get nullCount() {
+        if (this._nullCount === -1) {
+            this._nullCount = computeChunkNullCounts(this.data);
+        }
+        return this._nullCount;
+    }
+    /**
+     * The Array or TypedAray constructor used for the JS representation
+     *  of the element's values in {@link Vector.prototype.toArray `toArray()`}.
+     */
+    get ArrayType() { return this.type.ArrayType; }
+    /**
+     * The name that should be printed when the Vector is logged in a message.
+     */
+    get [Symbol.toStringTag]() {
+        return `${this.VectorName}<${this.type[Symbol.toStringTag]}>`;
+    }
+    /**
+     * The name of this Vector.
+     */
+    get VectorName() { return `${Type[this.type.typeId]}Vector`; }
+    /**
+     * Check whether an element is null.
+     * @param index The index at which to read the validity bitmap.
+     */
+    // @ts-ignore
+    isValid(index) { return false; }
+    /**
+     * Get an element value by position.
+     * @param index The index of the element to read.
+     */
+    // @ts-ignore
+    get(index) { return null; }
+    /**
+     * Set an element value by position.
+     * @param index The index of the element to write.
+     * @param value The value to set.
+     */
+    // @ts-ignore
+    set(index, value) { return; }
+    /**
+     * Retrieve the index of the first occurrence of a value in an Vector.
+     * @param element The value to locate in the Vector.
+     * @param offset The index at which to begin the search. If offset is omitted, the search starts at index 0.
+     */
+    // @ts-ignore
+    indexOf(element, offset) { return -1; }
+    includes(element, offset) { return this.indexOf(element, offset) > 0; }
+    /**
+     * Get the size in bytes of an element by index.
+     * @param index The index at which to get the byteLength.
+     */
+    // @ts-ignore
+    getByteLength(index) { return 0; }
+    /**
+     * Iterator for the Vector's elements.
+     */
+    [Symbol.iterator]() {
+        return iteratorVisitor.visit(this);
+    }
+    /**
+     * Combines two or more Vectors of the same type.
+     * @param others Additional Vectors to add to the end of this Vector.
+     */
+    concat(...others) {
+        return new Vector(this.data.concat(others.flatMap((x) => x.data).flat(Number.POSITIVE_INFINITY)));
+    }
+    /**
+     * Return a zero-copy sub-section of this Vector.
+     * @param start The beginning of the specified portion of the Vector.
+     * @param end The end of the specified portion of the Vector. This is exclusive of the element at the index 'end'.
+     */
+    slice(begin, end) {
+        return new Vector(clampRange(this, begin, end, ({ data, _offsets }, begin, end) => sliceChunks(data, _offsets, begin, end)));
+    }
+    toJSON() { return [...this]; }
+    /**
+     * Return a JavaScript Array or TypedArray of the Vector's elements.
+     *
+     * @note If this Vector contains a single Data chunk and the Vector's type is a
+     *  primitive numeric type corresponding to one of the JavaScript TypedArrays, this
+     *  method returns a zero-copy slice of the underlying TypedArray values. If there's
+     *  more than one chunk, the resulting TypedArray will be a copy of the data from each
+     *  chunk's underlying TypedArray values.
+     *
+     * @returns An Array or TypedArray of the Vector's elements, based on the Vector's DataType.
+     */
+    toArray() {
+        const { type, data, length, stride, ArrayType } = this;
+        // Fast case, return subarray if possible
+        switch (type.typeId) {
+            case Type.Int:
+            case Type.Float:
+            case Type.Decimal:
+            case Type.Time:
+            case Type.Timestamp:
+                switch (data.length) {
+                    case 0: return new ArrayType();
+                    case 1: return data[0].values.subarray(0, length * stride);
+                    default: return data.reduce((memo, { values, length: chunk_length }) => {
+                        memo.array.set(values.subarray(0, chunk_length * stride), memo.offset);
+                        memo.offset += chunk_length * stride;
+                        return memo;
+                    }, { array: new ArrayType(length * stride), offset: 0 }).array;
+                }
+        }
+        // Otherwise if not primitive, slow copy
+        return [...this];
+    }
+    /**
+     * Returns a string representation of the Vector.
+     *
+     * @returns A string representation of the Vector.
+     */
+    toString() {
+        return `[${[...this].join(',')}]`;
+    }
+    /**
+     * Returns a child Vector by name, or null if this Vector has no child with the given name.
+     * @param name The name of the child to retrieve.
+     */
+    getChild(name) {
+        var _b;
+        return this.getChildAt((_b = this.type.children) === null || _b === void 0 ? void 0 : _b.findIndex((f) => f.name === name));
+    }
+    /**
+     * Returns a child Vector by index, or null if this Vector has no child at the supplied index.
+     * @param index The index of the child to retrieve.
+     */
+    getChildAt(index) {
+        if (index > -1 && index < this.numChildren) {
+            return new Vector(this.data.map(({ children }) => children[index]));
+        }
+        return null;
+    }
+    get isMemoized() {
+        if (DataType.isDictionary(this.type)) {
+            return this.data[0].dictionary.isMemoized;
+        }
+        return false;
+    }
+    /**
+     * Adds memoization to the Vector's {@link get} method. For dictionary
+     * vectors, this method return a vector that memoizes only the dictionary
+     * values.
+     *
+     * Memoization is very useful when decoding a value is expensive such as
+     * Uft8. The memoization creates a cache of the size of the Vector and
+     * therfore increases memory usage.
+     *
+     * @returns A new vector that memoizes calls to {@link get}.
+     */
+    memoize() {
+        if (DataType.isDictionary(this.type)) {
+            const dictionary = new MemoizedVector(this.data[0].dictionary);
+            const newData = this.data.map((data) => {
+                const cloned = data.clone();
+                cloned.dictionary = dictionary;
+                return cloned;
+            });
+            return new Vector(newData);
+        }
+        return new MemoizedVector(this);
+    }
+    /**
+     * Returns a vector without memoization of the {@link get} method. If this
+     * vector is not memoized, this method returns this vector.
+     *
+     * @returns A a vector without memoization.
+     */
+    unmemoize() {
+        if (DataType.isDictionary(this.type) && this.isMemoized) {
+            const dictionary = this.data[0].dictionary.unmemoize();
+            const newData = this.data.map((data) => {
+                const newData = data.clone();
+                newData.dictionary = dictionary;
+                return newData;
+            });
+            return new Vector(newData);
+        }
+        return this;
+    }
+}
+_a = Symbol.toStringTag;
+// Initialize this static property via an IIFE so bundlers don't tree-shake
+// out this logic, but also so we're still compliant with `"sideEffects": false`
+Vector[_a] = ((proto) => {
+    proto.type = DataType.prototype;
+    proto.data = [];
+    proto.length = 0;
+    proto.stride = 1;
+    proto.numChildren = 0;
+    proto._nullCount = -1;
+    proto._byteLength = -1;
+    proto._offsets = new Uint32Array([0]);
+    proto[Symbol.isConcatSpreadable] = true;
+    const typeIds = Object.keys(Type)
+        .map((T) => Type[T])
+        .filter((T) => typeof T === 'number' && T !== Type.NONE);
+    for (const typeId of typeIds) {
+        const get = getVisitor.getVisitFnByTypeId(typeId);
+        const set = setVisitor.getVisitFnByTypeId(typeId);
+        const indexOf = indexOfVisitor.getVisitFnByTypeId(typeId);
+        const byteLength = byteLengthVisitor.getVisitFnByTypeId(typeId);
+        visitorsByTypeId[typeId] = { get, set, indexOf, byteLength };
+        vectorPrototypesByTypeId[typeId] = Object.create(proto, {
+            ['isValid']: { value: wrapChunkedCall1(isChunkedValid) },
+            ['get']: { value: wrapChunkedCall1(getVisitor.getVisitFnByTypeId(typeId)) },
+            ['set']: { value: wrapChunkedCall2(setVisitor.getVisitFnByTypeId(typeId)) },
+            ['indexOf']: { value: wrapChunkedIndexOf(indexOfVisitor.getVisitFnByTypeId(typeId)) },
+            ['getByteLength']: { value: wrapChunkedCall1(byteLengthVisitor.getVisitFnByTypeId(typeId)) },
+        });
+    }
+    return 'Vector';
+})(Vector.prototype);
+class MemoizedVector extends Vector {
+    constructor(vector) {
+        super(vector.data);
+        const get = this.get;
+        const set = this.set;
+        const slice = this.slice;
+        const cache = new Array(this.length);
+        Object.defineProperty(this, 'get', {
+            value(index) {
+                const cachedValue = cache[index];
+                if (cachedValue !== undefined) {
+                    return cachedValue;
+                }
+                const value = get.call(this, index);
+                cache[index] = value;
+                return value;
+            }
+        });
+        Object.defineProperty(this, 'set', {
+            value(index, value) {
+                set.call(this, index, value);
+                cache[index] = value;
+            }
+        });
+        Object.defineProperty(this, 'slice', {
+            value: (begin, end) => new MemoizedVector(slice.call(this, begin, end))
+        });
+        Object.defineProperty(this, 'isMemoized', { value: true });
+        Object.defineProperty(this, 'unmemoize', {
+            value: () => new Vector(this.data)
+        });
+        Object.defineProperty(this, 'memoize', {
+            value: () => this
+        });
+    }
+}
+import * as dtypes from './type.mjs';
+export function makeVector(init) {
+    if (init) {
+        if (init instanceof Data) {
+            return new Vector([init]);
+        }
+        if (init instanceof Vector) {
+            return new Vector(init.data);
+        }
+        if (init.type instanceof DataType) {
+            return new Vector([makeData(init)]);
+        }
+        if (Array.isArray(init)) {
+            return new Vector(init.flatMap(v => unwrapInputs(v)));
+        }
+        if (ArrayBuffer.isView(init)) {
+            if (init instanceof DataView) {
+                init = new Uint8Array(init.buffer);
+            }
+            const props = { offset: 0, length: init.length, nullCount: 0, data: init };
+            if (init instanceof Int8Array) {
+                return new Vector([makeData(Object.assign(Object.assign({}, props), { type: new dtypes.Int8 }))]);
+            }
+            if (init instanceof Int16Array) {
+                return new Vector([makeData(Object.assign(Object.assign({}, props), { type: new dtypes.Int16 }))]);
+            }
+            if (init instanceof Int32Array) {
+                return new Vector([makeData(Object.assign(Object.assign({}, props), { type: new dtypes.Int32 }))]);
+            }
+            if (init instanceof BigInt64Array) {
+                return new Vector([makeData(Object.assign(Object.assign({}, props), { type: new dtypes.Int64 }))]);
+            }
+            if (init instanceof Uint8Array || init instanceof Uint8ClampedArray) {
+                return new Vector([makeData(Object.assign(Object.assign({}, props), { type: new dtypes.Uint8 }))]);
+            }
+            if (init instanceof Uint16Array) {
+                return new Vector([makeData(Object.assign(Object.assign({}, props), { type: new dtypes.Uint16 }))]);
+            }
+            if (init instanceof Uint32Array) {
+                return new Vector([makeData(Object.assign(Object.assign({}, props), { type: new dtypes.Uint32 }))]);
+            }
+            if (init instanceof BigUint64Array) {
+                return new Vector([makeData(Object.assign(Object.assign({}, props), { type: new dtypes.Uint64 }))]);
+            }
+            if (init instanceof Float32Array) {
+                return new Vector([makeData(Object.assign(Object.assign({}, props), { type: new dtypes.Float32 }))]);
+            }
+            if (init instanceof Float64Array) {
+                return new Vector([makeData(Object.assign(Object.assign({}, props), { type: new dtypes.Float64 }))]);
+            }
+            throw new Error('Unrecognized input');
+        }
+    }
+    throw new Error('Unrecognized input');
+}
+function unwrapInputs(x) {
+    return x instanceof Data ? [x] : (x instanceof Vector ? x.data : makeVector(x).data);
+}
+
+//# sourceMappingURL=vector.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/vector.mjs.map b/igv_component/node_modules/apache-arrow/vector.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..972759da1c4f9f711ed26b424239706de516adf3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/vector.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor.d.ts b/igv_component/node_modules/apache-arrow/visitor.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..398c60d57bae7bf7ae2d8da5f495efcbd775f037
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor.d.ts
@@ -0,0 +1,52 @@
+import { Type } from './enum.js';
+export declare abstract class Visitor {
+    visitMany(nodes: any[], ...args: any[][]): any[];
+    visit(...args: any[]): any;
+    getVisitFn(node: any, throwIfNotFound?: boolean): any;
+    getVisitFnByTypeId(typeId: Type, throwIfNotFound?: boolean): any;
+}
+export interface Visitor {
+    visitNull(node: any, ...args: any[]): any;
+    visitBool(node: any, ...args: any[]): any;
+    visitInt(node: any, ...args: any[]): any;
+    visitInt8?(node: any, ...args: any[]): any;
+    visitInt16?(node: any, ...args: any[]): any;
+    visitInt32?(node: any, ...args: any[]): any;
+    visitInt64?(node: any, ...args: any[]): any;
+    visitUint8?(node: any, ...args: any[]): any;
+    visitUint16?(node: any, ...args: any[]): any;
+    visitUint32?(node: any, ...args: any[]): any;
+    visitUint64?(node: any, ...args: any[]): any;
+    visitFloat(node: any, ...args: any[]): any;
+    visitFloat16?(node: any, ...args: any[]): any;
+    visitFloat32?(node: any, ...args: any[]): any;
+    visitFloat64?(node: any, ...args: any[]): any;
+    visitUtf8(node: any, ...args: any[]): any;
+    visitBinary(node: any, ...args: any[]): any;
+    visitFixedSizeBinary(node: any, ...args: any[]): any;
+    visitDate(node: any, ...args: any[]): any;
+    visitDateDay?(node: any, ...args: any[]): any;
+    visitDateMillisecond?(node: any, ...args: any[]): any;
+    visitTimestamp(node: any, ...args: any[]): any;
+    visitTimestampSecond?(node: any, ...args: any[]): any;
+    visitTimestampMillisecond?(node: any, ...args: any[]): any;
+    visitTimestampMicrosecond?(node: any, ...args: any[]): any;
+    visitTimestampNanosecond?(node: any, ...args: any[]): any;
+    visitTime(node: any, ...args: any[]): any;
+    visitTimeSecond?(node: any, ...args: any[]): any;
+    visitTimeMillisecond?(node: any, ...args: any[]): any;
+    visitTimeMicrosecond?(node: any, ...args: any[]): any;
+    visitTimeNanosecond?(node: any, ...args: any[]): any;
+    visitDecimal(node: any, ...args: any[]): any;
+    visitList(node: any, ...args: any[]): any;
+    visitStruct(node: any, ...args: any[]): any;
+    visitUnion(node: any, ...args: any[]): any;
+    visitDenseUnion?(node: any, ...args: any[]): any;
+    visitSparseUnion?(node: any, ...args: any[]): any;
+    visitDictionary(node: any, ...args: any[]): any;
+    visitInterval(node: any, ...args: any[]): any;
+    visitIntervalDayTime?(node: any, ...args: any[]): any;
+    visitIntervalYearMonth?(node: any, ...args: any[]): any;
+    visitFixedSizeList(node: any, ...args: any[]): any;
+    visitMap(node: any, ...args: any[]): any;
+}
diff --git a/igv_component/node_modules/apache-arrow/visitor.d.ts.map b/igv_component/node_modules/apache-arrow/visitor.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..3544f21d17fa59c0dcf0e65830dc1e2207d2dded
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor.d.ts.map
@@ -0,0 +1 @@
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diff --git a/igv_component/node_modules/apache-arrow/visitor.js b/igv_component/node_modules/apache-arrow/visitor.js
new file mode 100644
index 0000000000000000000000000000000000000000..74ec144c4ea71d65a68ecc61382dd09ae32366c1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor.js
@@ -0,0 +1,314 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Visitor = void 0;
+const enum_js_1 = require("./enum.js");
+const type_js_1 = require("./type.js");
+class Visitor {
+    visitMany(nodes, ...args) {
+        return nodes.map((node, i) => this.visit(node, ...args.map((x) => x[i])));
+    }
+    visit(...args) {
+        return this.getVisitFn(args[0], false).apply(this, args);
+    }
+    getVisitFn(node, throwIfNotFound = true) {
+        return getVisitFn(this, node, throwIfNotFound);
+    }
+    getVisitFnByTypeId(typeId, throwIfNotFound = true) {
+        return getVisitFnByTypeId(this, typeId, throwIfNotFound);
+    }
+    visitNull(_node, ..._args) { return null; }
+    visitBool(_node, ..._args) { return null; }
+    visitInt(_node, ..._args) { return null; }
+    visitFloat(_node, ..._args) { return null; }
+    visitUtf8(_node, ..._args) { return null; }
+    visitBinary(_node, ..._args) { return null; }
+    visitFixedSizeBinary(_node, ..._args) { return null; }
+    visitDate(_node, ..._args) { return null; }
+    visitTimestamp(_node, ..._args) { return null; }
+    visitTime(_node, ..._args) { return null; }
+    visitDecimal(_node, ..._args) { return null; }
+    visitList(_node, ..._args) { return null; }
+    visitStruct(_node, ..._args) { return null; }
+    visitUnion(_node, ..._args) { return null; }
+    visitDictionary(_node, ..._args) { return null; }
+    visitInterval(_node, ..._args) { return null; }
+    visitFixedSizeList(_node, ..._args) { return null; }
+    visitMap(_node, ..._args) { return null; }
+}
+exports.Visitor = Visitor;
+/** @ignore */
+function getVisitFn(visitor, node, throwIfNotFound = true) {
+    if (typeof node === 'number') {
+        return getVisitFnByTypeId(visitor, node, throwIfNotFound);
+    }
+    if (typeof node === 'string' && (node in enum_js_1.Type)) {
+        return getVisitFnByTypeId(visitor, enum_js_1.Type[node], throwIfNotFound);
+    }
+    if (node && (node instanceof type_js_1.DataType)) {
+        return getVisitFnByTypeId(visitor, inferDType(node), throwIfNotFound);
+    }
+    if ((node === null || node === void 0 ? void 0 : node.type) && (node.type instanceof type_js_1.DataType)) {
+        return getVisitFnByTypeId(visitor, inferDType(node.type), throwIfNotFound);
+    }
+    return getVisitFnByTypeId(visitor, enum_js_1.Type.NONE, throwIfNotFound);
+}
+/** @ignore */
+function getVisitFnByTypeId(visitor, dtype, throwIfNotFound = true) {
+    let fn = null;
+    switch (dtype) {
+        case enum_js_1.Type.Null:
+            fn = visitor.visitNull;
+            break;
+        case enum_js_1.Type.Bool:
+            fn = visitor.visitBool;
+            break;
+        case enum_js_1.Type.Int:
+            fn = visitor.visitInt;
+            break;
+        case enum_js_1.Type.Int8:
+            fn = visitor.visitInt8 || visitor.visitInt;
+            break;
+        case enum_js_1.Type.Int16:
+            fn = visitor.visitInt16 || visitor.visitInt;
+            break;
+        case enum_js_1.Type.Int32:
+            fn = visitor.visitInt32 || visitor.visitInt;
+            break;
+        case enum_js_1.Type.Int64:
+            fn = visitor.visitInt64 || visitor.visitInt;
+            break;
+        case enum_js_1.Type.Uint8:
+            fn = visitor.visitUint8 || visitor.visitInt;
+            break;
+        case enum_js_1.Type.Uint16:
+            fn = visitor.visitUint16 || visitor.visitInt;
+            break;
+        case enum_js_1.Type.Uint32:
+            fn = visitor.visitUint32 || visitor.visitInt;
+            break;
+        case enum_js_1.Type.Uint64:
+            fn = visitor.visitUint64 || visitor.visitInt;
+            break;
+        case enum_js_1.Type.Float:
+            fn = visitor.visitFloat;
+            break;
+        case enum_js_1.Type.Float16:
+            fn = visitor.visitFloat16 || visitor.visitFloat;
+            break;
+        case enum_js_1.Type.Float32:
+            fn = visitor.visitFloat32 || visitor.visitFloat;
+            break;
+        case enum_js_1.Type.Float64:
+            fn = visitor.visitFloat64 || visitor.visitFloat;
+            break;
+        case enum_js_1.Type.Utf8:
+            fn = visitor.visitUtf8;
+            break;
+        case enum_js_1.Type.Binary:
+            fn = visitor.visitBinary;
+            break;
+        case enum_js_1.Type.FixedSizeBinary:
+            fn = visitor.visitFixedSizeBinary;
+            break;
+        case enum_js_1.Type.Date:
+            fn = visitor.visitDate;
+            break;
+        case enum_js_1.Type.DateDay:
+            fn = visitor.visitDateDay || visitor.visitDate;
+            break;
+        case enum_js_1.Type.DateMillisecond:
+            fn = visitor.visitDateMillisecond || visitor.visitDate;
+            break;
+        case enum_js_1.Type.Timestamp:
+            fn = visitor.visitTimestamp;
+            break;
+        case enum_js_1.Type.TimestampSecond:
+            fn = visitor.visitTimestampSecond || visitor.visitTimestamp;
+            break;
+        case enum_js_1.Type.TimestampMillisecond:
+            fn = visitor.visitTimestampMillisecond || visitor.visitTimestamp;
+            break;
+        case enum_js_1.Type.TimestampMicrosecond:
+            fn = visitor.visitTimestampMicrosecond || visitor.visitTimestamp;
+            break;
+        case enum_js_1.Type.TimestampNanosecond:
+            fn = visitor.visitTimestampNanosecond || visitor.visitTimestamp;
+            break;
+        case enum_js_1.Type.Time:
+            fn = visitor.visitTime;
+            break;
+        case enum_js_1.Type.TimeSecond:
+            fn = visitor.visitTimeSecond || visitor.visitTime;
+            break;
+        case enum_js_1.Type.TimeMillisecond:
+            fn = visitor.visitTimeMillisecond || visitor.visitTime;
+            break;
+        case enum_js_1.Type.TimeMicrosecond:
+            fn = visitor.visitTimeMicrosecond || visitor.visitTime;
+            break;
+        case enum_js_1.Type.TimeNanosecond:
+            fn = visitor.visitTimeNanosecond || visitor.visitTime;
+            break;
+        case enum_js_1.Type.Decimal:
+            fn = visitor.visitDecimal;
+            break;
+        case enum_js_1.Type.List:
+            fn = visitor.visitList;
+            break;
+        case enum_js_1.Type.Struct:
+            fn = visitor.visitStruct;
+            break;
+        case enum_js_1.Type.Union:
+            fn = visitor.visitUnion;
+            break;
+        case enum_js_1.Type.DenseUnion:
+            fn = visitor.visitDenseUnion || visitor.visitUnion;
+            break;
+        case enum_js_1.Type.SparseUnion:
+            fn = visitor.visitSparseUnion || visitor.visitUnion;
+            break;
+        case enum_js_1.Type.Dictionary:
+            fn = visitor.visitDictionary;
+            break;
+        case enum_js_1.Type.Interval:
+            fn = visitor.visitInterval;
+            break;
+        case enum_js_1.Type.IntervalDayTime:
+            fn = visitor.visitIntervalDayTime || visitor.visitInterval;
+            break;
+        case enum_js_1.Type.IntervalYearMonth:
+            fn = visitor.visitIntervalYearMonth || visitor.visitInterval;
+            break;
+        case enum_js_1.Type.FixedSizeList:
+            fn = visitor.visitFixedSizeList;
+            break;
+        case enum_js_1.Type.Map:
+            fn = visitor.visitMap;
+            break;
+    }
+    if (typeof fn === 'function')
+        return fn;
+    if (!throwIfNotFound)
+        return () => null;
+    throw new Error(`Unrecognized type '${enum_js_1.Type[dtype]}'`);
+}
+/** @ignore */
+function inferDType(type) {
+    switch (type.typeId) {
+        case enum_js_1.Type.Null: return enum_js_1.Type.Null;
+        case enum_js_1.Type.Int: {
+            const { bitWidth, isSigned } = type;
+            switch (bitWidth) {
+                case 8: return isSigned ? enum_js_1.Type.Int8 : enum_js_1.Type.Uint8;
+                case 16: return isSigned ? enum_js_1.Type.Int16 : enum_js_1.Type.Uint16;
+                case 32: return isSigned ? enum_js_1.Type.Int32 : enum_js_1.Type.Uint32;
+                case 64: return isSigned ? enum_js_1.Type.Int64 : enum_js_1.Type.Uint64;
+            }
+            // @ts-ignore
+            return enum_js_1.Type.Int;
+        }
+        case enum_js_1.Type.Float:
+            switch (type.precision) {
+                case enum_js_1.Precision.HALF: return enum_js_1.Type.Float16;
+                case enum_js_1.Precision.SINGLE: return enum_js_1.Type.Float32;
+                case enum_js_1.Precision.DOUBLE: return enum_js_1.Type.Float64;
+            }
+            // @ts-ignore
+            return enum_js_1.Type.Float;
+        case enum_js_1.Type.Binary: return enum_js_1.Type.Binary;
+        case enum_js_1.Type.Utf8: return enum_js_1.Type.Utf8;
+        case enum_js_1.Type.Bool: return enum_js_1.Type.Bool;
+        case enum_js_1.Type.Decimal: return enum_js_1.Type.Decimal;
+        case enum_js_1.Type.Time:
+            switch (type.unit) {
+                case enum_js_1.TimeUnit.SECOND: return enum_js_1.Type.TimeSecond;
+                case enum_js_1.TimeUnit.MILLISECOND: return enum_js_1.Type.TimeMillisecond;
+                case enum_js_1.TimeUnit.MICROSECOND: return enum_js_1.Type.TimeMicrosecond;
+                case enum_js_1.TimeUnit.NANOSECOND: return enum_js_1.Type.TimeNanosecond;
+            }
+            // @ts-ignore
+            return enum_js_1.Type.Time;
+        case enum_js_1.Type.Timestamp:
+            switch (type.unit) {
+                case enum_js_1.TimeUnit.SECOND: return enum_js_1.Type.TimestampSecond;
+                case enum_js_1.TimeUnit.MILLISECOND: return enum_js_1.Type.TimestampMillisecond;
+                case enum_js_1.TimeUnit.MICROSECOND: return enum_js_1.Type.TimestampMicrosecond;
+                case enum_js_1.TimeUnit.NANOSECOND: return enum_js_1.Type.TimestampNanosecond;
+            }
+            // @ts-ignore
+            return enum_js_1.Type.Timestamp;
+        case enum_js_1.Type.Date:
+            switch (type.unit) {
+                case enum_js_1.DateUnit.DAY: return enum_js_1.Type.DateDay;
+                case enum_js_1.DateUnit.MILLISECOND: return enum_js_1.Type.DateMillisecond;
+            }
+            // @ts-ignore
+            return enum_js_1.Type.Date;
+        case enum_js_1.Type.Interval:
+            switch (type.unit) {
+                case enum_js_1.IntervalUnit.DAY_TIME: return enum_js_1.Type.IntervalDayTime;
+                case enum_js_1.IntervalUnit.YEAR_MONTH: return enum_js_1.Type.IntervalYearMonth;
+            }
+            // @ts-ignore
+            return enum_js_1.Type.Interval;
+        case enum_js_1.Type.Map: return enum_js_1.Type.Map;
+        case enum_js_1.Type.List: return enum_js_1.Type.List;
+        case enum_js_1.Type.Struct: return enum_js_1.Type.Struct;
+        case enum_js_1.Type.Union:
+            switch (type.mode) {
+                case enum_js_1.UnionMode.Dense: return enum_js_1.Type.DenseUnion;
+                case enum_js_1.UnionMode.Sparse: return enum_js_1.Type.SparseUnion;
+            }
+            // @ts-ignore
+            return enum_js_1.Type.Union;
+        case enum_js_1.Type.FixedSizeBinary: return enum_js_1.Type.FixedSizeBinary;
+        case enum_js_1.Type.FixedSizeList: return enum_js_1.Type.FixedSizeList;
+        case enum_js_1.Type.Dictionary: return enum_js_1.Type.Dictionary;
+    }
+    throw new Error(`Unrecognized type '${enum_js_1.Type[type.typeId]}'`);
+}
+// Add these here so they're picked up by the externs creator
+// in the build, and closure-compiler doesn't minify them away
+Visitor.prototype.visitInt8 = null;
+Visitor.prototype.visitInt16 = null;
+Visitor.prototype.visitInt32 = null;
+Visitor.prototype.visitInt64 = null;
+Visitor.prototype.visitUint8 = null;
+Visitor.prototype.visitUint16 = null;
+Visitor.prototype.visitUint32 = null;
+Visitor.prototype.visitUint64 = null;
+Visitor.prototype.visitFloat16 = null;
+Visitor.prototype.visitFloat32 = null;
+Visitor.prototype.visitFloat64 = null;
+Visitor.prototype.visitDateDay = null;
+Visitor.prototype.visitDateMillisecond = null;
+Visitor.prototype.visitTimestampSecond = null;
+Visitor.prototype.visitTimestampMillisecond = null;
+Visitor.prototype.visitTimestampMicrosecond = null;
+Visitor.prototype.visitTimestampNanosecond = null;
+Visitor.prototype.visitTimeSecond = null;
+Visitor.prototype.visitTimeMillisecond = null;
+Visitor.prototype.visitTimeMicrosecond = null;
+Visitor.prototype.visitTimeNanosecond = null;
+Visitor.prototype.visitDenseUnion = null;
+Visitor.prototype.visitSparseUnion = null;
+Visitor.prototype.visitIntervalDayTime = null;
+Visitor.prototype.visitIntervalYearMonth = null;
+
+//# sourceMappingURL=visitor.js.map
diff --git a/igv_component/node_modules/apache-arrow/visitor.js.map b/igv_component/node_modules/apache-arrow/visitor.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..f8c532af88e73332e3d1279456b9317ff286bd3c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor.mjs b/igv_component/node_modules/apache-arrow/visitor.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..f334a964b5945b2c73d79f1a6da70373b09751c2
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor.mjs
@@ -0,0 +1,310 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Type, Precision, DateUnit, TimeUnit, IntervalUnit, UnionMode } from './enum.mjs';
+import { DataType, } from './type.mjs';
+export class Visitor {
+    visitMany(nodes, ...args) {
+        return nodes.map((node, i) => this.visit(node, ...args.map((x) => x[i])));
+    }
+    visit(...args) {
+        return this.getVisitFn(args[0], false).apply(this, args);
+    }
+    getVisitFn(node, throwIfNotFound = true) {
+        return getVisitFn(this, node, throwIfNotFound);
+    }
+    getVisitFnByTypeId(typeId, throwIfNotFound = true) {
+        return getVisitFnByTypeId(this, typeId, throwIfNotFound);
+    }
+    visitNull(_node, ..._args) { return null; }
+    visitBool(_node, ..._args) { return null; }
+    visitInt(_node, ..._args) { return null; }
+    visitFloat(_node, ..._args) { return null; }
+    visitUtf8(_node, ..._args) { return null; }
+    visitBinary(_node, ..._args) { return null; }
+    visitFixedSizeBinary(_node, ..._args) { return null; }
+    visitDate(_node, ..._args) { return null; }
+    visitTimestamp(_node, ..._args) { return null; }
+    visitTime(_node, ..._args) { return null; }
+    visitDecimal(_node, ..._args) { return null; }
+    visitList(_node, ..._args) { return null; }
+    visitStruct(_node, ..._args) { return null; }
+    visitUnion(_node, ..._args) { return null; }
+    visitDictionary(_node, ..._args) { return null; }
+    visitInterval(_node, ..._args) { return null; }
+    visitFixedSizeList(_node, ..._args) { return null; }
+    visitMap(_node, ..._args) { return null; }
+}
+/** @ignore */
+function getVisitFn(visitor, node, throwIfNotFound = true) {
+    if (typeof node === 'number') {
+        return getVisitFnByTypeId(visitor, node, throwIfNotFound);
+    }
+    if (typeof node === 'string' && (node in Type)) {
+        return getVisitFnByTypeId(visitor, Type[node], throwIfNotFound);
+    }
+    if (node && (node instanceof DataType)) {
+        return getVisitFnByTypeId(visitor, inferDType(node), throwIfNotFound);
+    }
+    if ((node === null || node === void 0 ? void 0 : node.type) && (node.type instanceof DataType)) {
+        return getVisitFnByTypeId(visitor, inferDType(node.type), throwIfNotFound);
+    }
+    return getVisitFnByTypeId(visitor, Type.NONE, throwIfNotFound);
+}
+/** @ignore */
+function getVisitFnByTypeId(visitor, dtype, throwIfNotFound = true) {
+    let fn = null;
+    switch (dtype) {
+        case Type.Null:
+            fn = visitor.visitNull;
+            break;
+        case Type.Bool:
+            fn = visitor.visitBool;
+            break;
+        case Type.Int:
+            fn = visitor.visitInt;
+            break;
+        case Type.Int8:
+            fn = visitor.visitInt8 || visitor.visitInt;
+            break;
+        case Type.Int16:
+            fn = visitor.visitInt16 || visitor.visitInt;
+            break;
+        case Type.Int32:
+            fn = visitor.visitInt32 || visitor.visitInt;
+            break;
+        case Type.Int64:
+            fn = visitor.visitInt64 || visitor.visitInt;
+            break;
+        case Type.Uint8:
+            fn = visitor.visitUint8 || visitor.visitInt;
+            break;
+        case Type.Uint16:
+            fn = visitor.visitUint16 || visitor.visitInt;
+            break;
+        case Type.Uint32:
+            fn = visitor.visitUint32 || visitor.visitInt;
+            break;
+        case Type.Uint64:
+            fn = visitor.visitUint64 || visitor.visitInt;
+            break;
+        case Type.Float:
+            fn = visitor.visitFloat;
+            break;
+        case Type.Float16:
+            fn = visitor.visitFloat16 || visitor.visitFloat;
+            break;
+        case Type.Float32:
+            fn = visitor.visitFloat32 || visitor.visitFloat;
+            break;
+        case Type.Float64:
+            fn = visitor.visitFloat64 || visitor.visitFloat;
+            break;
+        case Type.Utf8:
+            fn = visitor.visitUtf8;
+            break;
+        case Type.Binary:
+            fn = visitor.visitBinary;
+            break;
+        case Type.FixedSizeBinary:
+            fn = visitor.visitFixedSizeBinary;
+            break;
+        case Type.Date:
+            fn = visitor.visitDate;
+            break;
+        case Type.DateDay:
+            fn = visitor.visitDateDay || visitor.visitDate;
+            break;
+        case Type.DateMillisecond:
+            fn = visitor.visitDateMillisecond || visitor.visitDate;
+            break;
+        case Type.Timestamp:
+            fn = visitor.visitTimestamp;
+            break;
+        case Type.TimestampSecond:
+            fn = visitor.visitTimestampSecond || visitor.visitTimestamp;
+            break;
+        case Type.TimestampMillisecond:
+            fn = visitor.visitTimestampMillisecond || visitor.visitTimestamp;
+            break;
+        case Type.TimestampMicrosecond:
+            fn = visitor.visitTimestampMicrosecond || visitor.visitTimestamp;
+            break;
+        case Type.TimestampNanosecond:
+            fn = visitor.visitTimestampNanosecond || visitor.visitTimestamp;
+            break;
+        case Type.Time:
+            fn = visitor.visitTime;
+            break;
+        case Type.TimeSecond:
+            fn = visitor.visitTimeSecond || visitor.visitTime;
+            break;
+        case Type.TimeMillisecond:
+            fn = visitor.visitTimeMillisecond || visitor.visitTime;
+            break;
+        case Type.TimeMicrosecond:
+            fn = visitor.visitTimeMicrosecond || visitor.visitTime;
+            break;
+        case Type.TimeNanosecond:
+            fn = visitor.visitTimeNanosecond || visitor.visitTime;
+            break;
+        case Type.Decimal:
+            fn = visitor.visitDecimal;
+            break;
+        case Type.List:
+            fn = visitor.visitList;
+            break;
+        case Type.Struct:
+            fn = visitor.visitStruct;
+            break;
+        case Type.Union:
+            fn = visitor.visitUnion;
+            break;
+        case Type.DenseUnion:
+            fn = visitor.visitDenseUnion || visitor.visitUnion;
+            break;
+        case Type.SparseUnion:
+            fn = visitor.visitSparseUnion || visitor.visitUnion;
+            break;
+        case Type.Dictionary:
+            fn = visitor.visitDictionary;
+            break;
+        case Type.Interval:
+            fn = visitor.visitInterval;
+            break;
+        case Type.IntervalDayTime:
+            fn = visitor.visitIntervalDayTime || visitor.visitInterval;
+            break;
+        case Type.IntervalYearMonth:
+            fn = visitor.visitIntervalYearMonth || visitor.visitInterval;
+            break;
+        case Type.FixedSizeList:
+            fn = visitor.visitFixedSizeList;
+            break;
+        case Type.Map:
+            fn = visitor.visitMap;
+            break;
+    }
+    if (typeof fn === 'function')
+        return fn;
+    if (!throwIfNotFound)
+        return () => null;
+    throw new Error(`Unrecognized type '${Type[dtype]}'`);
+}
+/** @ignore */
+function inferDType(type) {
+    switch (type.typeId) {
+        case Type.Null: return Type.Null;
+        case Type.Int: {
+            const { bitWidth, isSigned } = type;
+            switch (bitWidth) {
+                case 8: return isSigned ? Type.Int8 : Type.Uint8;
+                case 16: return isSigned ? Type.Int16 : Type.Uint16;
+                case 32: return isSigned ? Type.Int32 : Type.Uint32;
+                case 64: return isSigned ? Type.Int64 : Type.Uint64;
+            }
+            // @ts-ignore
+            return Type.Int;
+        }
+        case Type.Float:
+            switch (type.precision) {
+                case Precision.HALF: return Type.Float16;
+                case Precision.SINGLE: return Type.Float32;
+                case Precision.DOUBLE: return Type.Float64;
+            }
+            // @ts-ignore
+            return Type.Float;
+        case Type.Binary: return Type.Binary;
+        case Type.Utf8: return Type.Utf8;
+        case Type.Bool: return Type.Bool;
+        case Type.Decimal: return Type.Decimal;
+        case Type.Time:
+            switch (type.unit) {
+                case TimeUnit.SECOND: return Type.TimeSecond;
+                case TimeUnit.MILLISECOND: return Type.TimeMillisecond;
+                case TimeUnit.MICROSECOND: return Type.TimeMicrosecond;
+                case TimeUnit.NANOSECOND: return Type.TimeNanosecond;
+            }
+            // @ts-ignore
+            return Type.Time;
+        case Type.Timestamp:
+            switch (type.unit) {
+                case TimeUnit.SECOND: return Type.TimestampSecond;
+                case TimeUnit.MILLISECOND: return Type.TimestampMillisecond;
+                case TimeUnit.MICROSECOND: return Type.TimestampMicrosecond;
+                case TimeUnit.NANOSECOND: return Type.TimestampNanosecond;
+            }
+            // @ts-ignore
+            return Type.Timestamp;
+        case Type.Date:
+            switch (type.unit) {
+                case DateUnit.DAY: return Type.DateDay;
+                case DateUnit.MILLISECOND: return Type.DateMillisecond;
+            }
+            // @ts-ignore
+            return Type.Date;
+        case Type.Interval:
+            switch (type.unit) {
+                case IntervalUnit.DAY_TIME: return Type.IntervalDayTime;
+                case IntervalUnit.YEAR_MONTH: return Type.IntervalYearMonth;
+            }
+            // @ts-ignore
+            return Type.Interval;
+        case Type.Map: return Type.Map;
+        case Type.List: return Type.List;
+        case Type.Struct: return Type.Struct;
+        case Type.Union:
+            switch (type.mode) {
+                case UnionMode.Dense: return Type.DenseUnion;
+                case UnionMode.Sparse: return Type.SparseUnion;
+            }
+            // @ts-ignore
+            return Type.Union;
+        case Type.FixedSizeBinary: return Type.FixedSizeBinary;
+        case Type.FixedSizeList: return Type.FixedSizeList;
+        case Type.Dictionary: return Type.Dictionary;
+    }
+    throw new Error(`Unrecognized type '${Type[type.typeId]}'`);
+}
+// Add these here so they're picked up by the externs creator
+// in the build, and closure-compiler doesn't minify them away
+Visitor.prototype.visitInt8 = null;
+Visitor.prototype.visitInt16 = null;
+Visitor.prototype.visitInt32 = null;
+Visitor.prototype.visitInt64 = null;
+Visitor.prototype.visitUint8 = null;
+Visitor.prototype.visitUint16 = null;
+Visitor.prototype.visitUint32 = null;
+Visitor.prototype.visitUint64 = null;
+Visitor.prototype.visitFloat16 = null;
+Visitor.prototype.visitFloat32 = null;
+Visitor.prototype.visitFloat64 = null;
+Visitor.prototype.visitDateDay = null;
+Visitor.prototype.visitDateMillisecond = null;
+Visitor.prototype.visitTimestampSecond = null;
+Visitor.prototype.visitTimestampMillisecond = null;
+Visitor.prototype.visitTimestampMicrosecond = null;
+Visitor.prototype.visitTimestampNanosecond = null;
+Visitor.prototype.visitTimeSecond = null;
+Visitor.prototype.visitTimeMillisecond = null;
+Visitor.prototype.visitTimeMicrosecond = null;
+Visitor.prototype.visitTimeNanosecond = null;
+Visitor.prototype.visitDenseUnion = null;
+Visitor.prototype.visitSparseUnion = null;
+Visitor.prototype.visitIntervalDayTime = null;
+Visitor.prototype.visitIntervalYearMonth = null;
+
+//# sourceMappingURL=visitor.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/visitor.mjs.map b/igv_component/node_modules/apache-arrow/visitor.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..8e72bf408621f2c4d56e42a517512967afccd3b5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/builderctor.d.ts b/igv_component/node_modules/apache-arrow/visitor/builderctor.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..77fc96b98ac381020bbce5cf032fd61573dba612
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/builderctor.d.ts
@@ -0,0 +1,79 @@
+import { Data } from '../data.js';
+import { Type } from '../enum.js';
+import { Vector } from '../vector.js';
+import { DataType } from '../type.js';
+import { Visitor } from '../visitor.js';
+import { BuilderCtor } from '../interfaces.js';
+import { BinaryBuilder } from '../builder/binary.js';
+import { BoolBuilder } from '../builder/bool.js';
+import { DateBuilder, DateDayBuilder, DateMillisecondBuilder } from '../builder/date.js';
+import { DecimalBuilder } from '../builder/decimal.js';
+import { DictionaryBuilder } from '../builder/dictionary.js';
+import { FixedSizeBinaryBuilder } from '../builder/fixedsizebinary.js';
+import { FixedSizeListBuilder } from '../builder/fixedsizelist.js';
+import { FloatBuilder, Float16Builder, Float32Builder, Float64Builder } from '../builder/float.js';
+import { IntervalBuilder, IntervalDayTimeBuilder, IntervalYearMonthBuilder } from '../builder/interval.js';
+import { IntBuilder, Int8Builder, Int16Builder, Int32Builder, Int64Builder, Uint8Builder, Uint16Builder, Uint32Builder, Uint64Builder } from '../builder/int.js';
+import { ListBuilder } from '../builder/list.js';
+import { MapBuilder } from '../builder/map.js';
+import { NullBuilder } from '../builder/null.js';
+import { StructBuilder } from '../builder/struct.js';
+import { TimestampBuilder, TimestampSecondBuilder, TimestampMillisecondBuilder, TimestampMicrosecondBuilder, TimestampNanosecondBuilder } from '../builder/timestamp.js';
+import { TimeBuilder, TimeSecondBuilder, TimeMillisecondBuilder, TimeMicrosecondBuilder, TimeNanosecondBuilder } from '../builder/time.js';
+import { UnionBuilder, DenseUnionBuilder, SparseUnionBuilder } from '../builder/union.js';
+import { Utf8Builder } from '../builder/utf8.js';
+/** @ignore */
+export interface GetBuilderCtor extends Visitor {
+    visit<T extends Type>(type: T): BuilderCtor<T>;
+    visitMany<T extends Type>(types: T[]): BuilderCtor<T>[];
+    getVisitFn<T extends Type>(type: T): () => BuilderCtor<T>;
+    getVisitFn<T extends DataType>(node: Vector<T> | Data<T> | T): () => BuilderCtor<T>;
+}
+/** @ignore */
+export declare class GetBuilderCtor extends Visitor {
+    visitNull(): typeof NullBuilder;
+    visitBool(): typeof BoolBuilder;
+    visitInt(): typeof IntBuilder;
+    visitInt8(): typeof Int8Builder;
+    visitInt16(): typeof Int16Builder;
+    visitInt32(): typeof Int32Builder;
+    visitInt64(): typeof Int64Builder;
+    visitUint8(): typeof Uint8Builder;
+    visitUint16(): typeof Uint16Builder;
+    visitUint32(): typeof Uint32Builder;
+    visitUint64(): typeof Uint64Builder;
+    visitFloat(): typeof FloatBuilder;
+    visitFloat16(): typeof Float16Builder;
+    visitFloat32(): typeof Float32Builder;
+    visitFloat64(): typeof Float64Builder;
+    visitUtf8(): typeof Utf8Builder;
+    visitBinary(): typeof BinaryBuilder;
+    visitFixedSizeBinary(): typeof FixedSizeBinaryBuilder;
+    visitDate(): typeof DateBuilder;
+    visitDateDay(): typeof DateDayBuilder;
+    visitDateMillisecond(): typeof DateMillisecondBuilder;
+    visitTimestamp(): typeof TimestampBuilder;
+    visitTimestampSecond(): typeof TimestampSecondBuilder;
+    visitTimestampMillisecond(): typeof TimestampMillisecondBuilder;
+    visitTimestampMicrosecond(): typeof TimestampMicrosecondBuilder;
+    visitTimestampNanosecond(): typeof TimestampNanosecondBuilder;
+    visitTime(): typeof TimeBuilder;
+    visitTimeSecond(): typeof TimeSecondBuilder;
+    visitTimeMillisecond(): typeof TimeMillisecondBuilder;
+    visitTimeMicrosecond(): typeof TimeMicrosecondBuilder;
+    visitTimeNanosecond(): typeof TimeNanosecondBuilder;
+    visitDecimal(): typeof DecimalBuilder;
+    visitList(): typeof ListBuilder;
+    visitStruct(): typeof StructBuilder;
+    visitUnion(): typeof UnionBuilder;
+    visitDenseUnion(): typeof DenseUnionBuilder;
+    visitSparseUnion(): typeof SparseUnionBuilder;
+    visitDictionary(): typeof DictionaryBuilder;
+    visitInterval(): typeof IntervalBuilder;
+    visitIntervalDayTime(): typeof IntervalDayTimeBuilder;
+    visitIntervalYearMonth(): typeof IntervalYearMonthBuilder;
+    visitFixedSizeList(): typeof FixedSizeListBuilder;
+    visitMap(): typeof MapBuilder;
+}
+/** @ignore */
+export declare const instance: GetBuilderCtor;
diff --git a/igv_component/node_modules/apache-arrow/visitor/builderctor.d.ts.map b/igv_component/node_modules/apache-arrow/visitor/builderctor.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..51ab4cdd7c1f09605702a36099b179602879c1e9
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/builderctor.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/builderctor.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,IAAI,EAAE,MAAM,YAAY,CAAC;AAClC,OAAO,EAAE,IAAI,EAAE,MAAM,YAAY,CAAC;AAClC,OAAO,EAAE,MAAM,EAAE,MAAM,cAAc,CAAC;AACtC,OAAO,EAAE,QAAQ,EAAE,MAAM,YAAY,CAAC;AACtC,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AACxC,OAAO,EAAE,WAAW,EAAE,MAAM,kBAAkB,CAAC;AAC/C,OAAO,EAAE,aAAa,EAAE,MAAM,sBAAsB,CAAC;AACrD,OAAO,EAAE,WAAW,EAAE,MAAM,oBAAoB,CAAC;AACjD,OAAO,EAAE,WAAW,EAAE,cAAc,EAAE,sBAAsB,EAAE,MAAM,oBAAoB,CAAC;AACzF,OAAO,EAAE,cAAc,EAAE,MAAM,uBAAuB,CAAC;AACvD,OAAO,EAAE,iBAAiB,EAAE,MAAM,0BAA0B,CAAC;AAC7D,OAAO,EAAE,sBAAsB,EAAE,MAAM,+BAA+B,CAAC;AACvE,OAAO,EAAE,oBAAoB,EAAE,MAAM,6BAA6B,CAAC;AACnE,OAAO,EAAE,YAAY,EAAE,cAAc,EAAE,cAAc,EAAE,cAAc,EAAE,MAAM,qBAAqB,CAAC;AACnG,OAAO,EAAE,eAAe,EAAE,sBAAsB,EAAE,wBAAwB,EAAE,MAAM,wBAAwB,CAAC;AAC3G,OAAO,EAAE,UAAU,EAAE,WAAW,EAAE,YAAY,EAAE,YAAY,EAAE,YAAY,EAAE,YAAY,EAAE,aAAa,EAAE,aAAa,EAAE,aAAa,EAAE,MAAM,mBAAmB,CAAC;AACjK,OAAO,EAAE,WAAW,EAAE,MAAM,oBAAoB,CAAC;AACjD,OAAO,EAAE,UAAU,EAAE,MAAM,mBAAmB,CAAC;AAC/C,OAAO,EAAE,WAAW,EAAE,MAAM,oBAAoB,CAAC;AACjD,OAAO,EAAE,aAAa,EAAE,MAAM,sBAAsB,CAAC;AACrD,OAAO,EAAE,gBAAgB,EAAE,sBAAsB,EAAE,2BAA2B,EAAE,2BAA2B,EAAE,0BAA0B,EAAE,MAAM,yBAAyB,CAAC;AACzK,OAAO,EAAE,WAAW,EAAE,iBAAiB,EAAE,sBAAsB,EAAE,sBAAsB,EAAE,qBAAqB,EAAE,MAAM,oBAAoB,CAAC;AAC3I,OAAO,EAAE,YAAY,EAAE,iBAAiB,EAAE,kBAAkB,EAAE,MAAM,qBAAqB,CAAC;AAC1F,OAAO,EAAE,WAAW,EAAE,MAAM,oBAAoB,CAAC;AAEjD,cAAc;AACd,MAAM,WAAW,cAAe,SAAQ,OAAO;IAC3C,KAAK,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,CAAC,GAAG,WAAW,CAAC,CAAC,CAAC,CAAC;IAC/C,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,KAAK,EAAE,CAAC,EAAE,GAAG,WAAW,CAAC,CAAC,CAAC,EAAE,CAAC;IACxD,UAAU,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,CAAC,GAAG,MAAM,WAAW,CAAC,CAAC,CAAC,CAAC;IAC1D,UAAU,CAAC,CAAC,SAAS,QAAQ,EAAE,IAAI,EAAE,MAAM,CAAC,CAAC,CAAC,GAAG,IAAI,CAAC,CAAC,CAAC,GAAG,CAAC,GAAG,MAAM,WAAW,CAAC,CAAC,CAAC,CAAC;CACvF;AAED,cAAc;AACd,qBAAa,cAAe,SAAQ,OAAO;IAChC,SAAS;IACT,SAAS;IACT,QAAQ;IACR,SAAS;IACT,UAAU;IACV,UAAU;IACV,UAAU;IACV,UAAU;IACV,WAAW;IACX,WAAW;IACX,WAAW;IACX,UAAU;IACV,YAAY;IACZ,YAAY;IACZ,YAAY;IACZ,SAAS;IACT,WAAW;IACX,oBAAoB;IACpB,SAAS;IACT,YAAY;IACZ,oBAAoB;IACpB,cAAc;IACd,oBAAoB;IACpB,yBAAyB;IACzB,yBAAyB;IACzB,wBAAwB;IACxB,SAAS;IACT,eAAe;IACf,oBAAoB;IACpB,oBAAoB;IACpB,mBAAmB;IACnB,YAAY;IACZ,SAAS;IACT,WAAW;IACX,UAAU;IACV,eAAe;IACf,gBAAgB;IAChB,eAAe;IACf,aAAa;IACb,oBAAoB;IACpB,sBAAsB;IACtB,kBAAkB;IAClB,QAAQ;CAClB;AAED,cAAc;AACd,eAAO,MAAM,QAAQ,gBAAuB,CAAC","file":"builderctor.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/builderctor.js b/igv_component/node_modules/apache-arrow/visitor/builderctor.js
new file mode 100644
index 0000000000000000000000000000000000000000..f9c931ab471ac729385d0830567c52012f848fdb
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/builderctor.js
@@ -0,0 +1,89 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.instance = exports.GetBuilderCtor = void 0;
+const visitor_js_1 = require("../visitor.js");
+const binary_js_1 = require("../builder/binary.js");
+const bool_js_1 = require("../builder/bool.js");
+const date_js_1 = require("../builder/date.js");
+const decimal_js_1 = require("../builder/decimal.js");
+const dictionary_js_1 = require("../builder/dictionary.js");
+const fixedsizebinary_js_1 = require("../builder/fixedsizebinary.js");
+const fixedsizelist_js_1 = require("../builder/fixedsizelist.js");
+const float_js_1 = require("../builder/float.js");
+const interval_js_1 = require("../builder/interval.js");
+const int_js_1 = require("../builder/int.js");
+const list_js_1 = require("../builder/list.js");
+const map_js_1 = require("../builder/map.js");
+const null_js_1 = require("../builder/null.js");
+const struct_js_1 = require("../builder/struct.js");
+const timestamp_js_1 = require("../builder/timestamp.js");
+const time_js_1 = require("../builder/time.js");
+const union_js_1 = require("../builder/union.js");
+const utf8_js_1 = require("../builder/utf8.js");
+/** @ignore */
+class GetBuilderCtor extends visitor_js_1.Visitor {
+    visitNull() { return null_js_1.NullBuilder; }
+    visitBool() { return bool_js_1.BoolBuilder; }
+    visitInt() { return int_js_1.IntBuilder; }
+    visitInt8() { return int_js_1.Int8Builder; }
+    visitInt16() { return int_js_1.Int16Builder; }
+    visitInt32() { return int_js_1.Int32Builder; }
+    visitInt64() { return int_js_1.Int64Builder; }
+    visitUint8() { return int_js_1.Uint8Builder; }
+    visitUint16() { return int_js_1.Uint16Builder; }
+    visitUint32() { return int_js_1.Uint32Builder; }
+    visitUint64() { return int_js_1.Uint64Builder; }
+    visitFloat() { return float_js_1.FloatBuilder; }
+    visitFloat16() { return float_js_1.Float16Builder; }
+    visitFloat32() { return float_js_1.Float32Builder; }
+    visitFloat64() { return float_js_1.Float64Builder; }
+    visitUtf8() { return utf8_js_1.Utf8Builder; }
+    visitBinary() { return binary_js_1.BinaryBuilder; }
+    visitFixedSizeBinary() { return fixedsizebinary_js_1.FixedSizeBinaryBuilder; }
+    visitDate() { return date_js_1.DateBuilder; }
+    visitDateDay() { return date_js_1.DateDayBuilder; }
+    visitDateMillisecond() { return date_js_1.DateMillisecondBuilder; }
+    visitTimestamp() { return timestamp_js_1.TimestampBuilder; }
+    visitTimestampSecond() { return timestamp_js_1.TimestampSecondBuilder; }
+    visitTimestampMillisecond() { return timestamp_js_1.TimestampMillisecondBuilder; }
+    visitTimestampMicrosecond() { return timestamp_js_1.TimestampMicrosecondBuilder; }
+    visitTimestampNanosecond() { return timestamp_js_1.TimestampNanosecondBuilder; }
+    visitTime() { return time_js_1.TimeBuilder; }
+    visitTimeSecond() { return time_js_1.TimeSecondBuilder; }
+    visitTimeMillisecond() { return time_js_1.TimeMillisecondBuilder; }
+    visitTimeMicrosecond() { return time_js_1.TimeMicrosecondBuilder; }
+    visitTimeNanosecond() { return time_js_1.TimeNanosecondBuilder; }
+    visitDecimal() { return decimal_js_1.DecimalBuilder; }
+    visitList() { return list_js_1.ListBuilder; }
+    visitStruct() { return struct_js_1.StructBuilder; }
+    visitUnion() { return union_js_1.UnionBuilder; }
+    visitDenseUnion() { return union_js_1.DenseUnionBuilder; }
+    visitSparseUnion() { return union_js_1.SparseUnionBuilder; }
+    visitDictionary() { return dictionary_js_1.DictionaryBuilder; }
+    visitInterval() { return interval_js_1.IntervalBuilder; }
+    visitIntervalDayTime() { return interval_js_1.IntervalDayTimeBuilder; }
+    visitIntervalYearMonth() { return interval_js_1.IntervalYearMonthBuilder; }
+    visitFixedSizeList() { return fixedsizelist_js_1.FixedSizeListBuilder; }
+    visitMap() { return map_js_1.MapBuilder; }
+}
+exports.GetBuilderCtor = GetBuilderCtor;
+/** @ignore */
+exports.instance = new GetBuilderCtor();
+
+//# sourceMappingURL=builderctor.js.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/builderctor.js.map b/igv_component/node_modules/apache-arrow/visitor/builderctor.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..c3bfe836539e13f21d2bb54b4e5b999049c28ead
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/builderctor.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/builderctor.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAMrB,8CAAwC;AAExC,oDAAqD;AACrD,gDAAiD;AACjD,gDAAyF;AACzF,sDAAuD;AACvD,4DAA6D;AAC7D,sEAAuE;AACvE,kEAAmE;AACnE,kDAAmG;AACnG,wDAA2G;AAC3G,8CAAiK;AACjK,gDAAiD;AACjD,8CAA+C;AAC/C,gDAAiD;AACjD,oDAAqD;AACrD,0DAAyK;AACzK,gDAA2I;AAC3I,kDAA0F;AAC1F,gDAAiD;AAUjD,cAAc;AACd,MAAa,cAAe,SAAQ,oBAAO;IAChC,SAAS,KAAK,OAAO,qBAAW,CAAC,CAAC,CAAC;IACnC,SAAS,KAAK,OAAO,qBAAW,CAAC,CAAC,CAAC;IACnC,QAAQ,KAAK,OAAO,mBAAU,CAAC,CAAC,CAAC;IACjC,SAAS,KAAK,OAAO,oBAAW,CAAC,CAAC,CAAC;IACnC,UAAU,KAAK,OAAO,qBAAY,CAAC,CAAC,CAAC;IACrC,UAAU,KAAK,OAAO,qBAAY,CAAC,CAAC,CAAC;IACrC,UAAU,KAAK,OAAO,qBAAY,CAAC,CAAC,CAAC;IACrC,UAAU,KAAK,OAAO,qBAAY,CAAC,CAAC,CAAC;IACrC,WAAW,KAAK,OAAO,sBAAa,CAAC,CAAC,CAAC;IACvC,WAAW,KAAK,OAAO,sBAAa,CAAC,CAAC,CAAC;IACvC,WAAW,KAAK,OAAO,sBAAa,CAAC,CAAC,CAAC;IACvC,UAAU,KAAK,OAAO,uBAAY,CAAC,CAAC,CAAC;IACrC,YAAY,KAAK,OAAO,yBAAc,CAAC,CAAC,CAAC;IACzC,YAAY,KAAK,OAAO,yBAAc,CAAC,CAAC,CAAC;IACzC,YAAY,KAAK,OAAO,yBAAc,CAAC,CAAC,CAAC;IACzC,SAAS,KAAK,OAAO,qBAAW,CAAC,CAAC,CAAC;IACnC,WAAW,KAAK,OAAO,yBAAa,CAAC,CAAC,CAAC;IACvC,oBAAoB,KAAK,OAAO,2CAAsB,CAAC,CAAC,CAAC;IACzD,SAAS,KAAK,OAAO,qBAAW,CAAC,CAAC,CAAC;IACnC,YAAY,KAAK,OAAO,wBAAc,CAAC,CAAC,CAAC;IACzC,oBAAoB,KAAK,OAAO,gCAAsB,CAAC,CAAC,CAAC;IACzD,cAAc,KAAK,OAAO,+BAAgB,CAAC,CAAC,CAAC;IAC7C,oBAAoB,KAAK,OAAO,qCAAsB,CAAC,CAAC,CAAC;IACzD,yBAAyB,KAAK,OAAO,0CAA2B,CAAC,CAAC,CAAC;IACnE,yBAAyB,KAAK,OAAO,0CAA2B,CAAC,CAAC,CAAC;IACnE,wBAAwB,KAAK,OAAO,yCAA0B,CAAC,CAAC,CAAC;IACjE,SAAS,KAAK,OAAO,qBAAW,CAAC,CAAC,CAAC;IACnC,eAAe,KAAK,OAAO,2BAAiB,CAAC,CAAC,CAAC;IAC/C,oBAAoB,KAAK,OAAO,gCAAsB,CAAC,CAAC,CAAC;IACzD,oBAAoB,KAAK,OAAO,gCAAsB,CAAC,CAAC,CAAC;IACzD,mBAAmB,KAAK,OAAO,+BAAqB,CAAC,CAAC,CAAC;IACvD,YAAY,KAAK,OAAO,2BAAc,CAAC,CAAC,CAAC;IACzC,SAAS,KAAK,OAAO,qBAAW,CAAC,CAAC,CAAC;IACnC,WAAW,KAAK,OAAO,yBAAa,CAAC,CAAC,CAAC;IACvC,UAAU,KAAK,OAAO,uBAAY,CAAC,CAAC,CAAC;IACrC,eAAe,KAAK,OAAO,4BAAiB,CAAC,CAAC,CAAC;IAC/C,gBAAgB,KAAK,OAAO,6BAAkB,CAAC,CAAC,CAAC;IACjD,eAAe,KAAK,OAAO,iCAAiB,CAAC,CAAC,CAAC;IAC/C,aAAa,KAAK,OAAO,6BAAe,CAAC,CAAC,CAAC;IAC3C,oBAAoB,KAAK,OAAO,oCAAsB,CAAC,CAAC,CAAC;IACzD,sBAAsB,KAAK,OAAO,sCAAwB,CAAC,CAAC,CAAC;IAC7D,kBAAkB,KAAK,OAAO,uCAAoB,CAAC,CAAC,CAAC;IACrD,QAAQ,KAAK,OAAO,mBAAU,CAAC,CAAC,CAAC;CAC3C;AA5CD,wCA4CC;AAED,cAAc;AACD,QAAA,QAAQ,GAAG,IAAI,cAAc,EAAE,CAAC","file":"builderctor.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/builderctor.mjs b/igv_component/node_modules/apache-arrow/visitor/builderctor.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..3233bee6da2482f5b3181b275b69f3f3a13e79ad
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/builderctor.mjs
@@ -0,0 +1,85 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Visitor } from '../visitor.mjs';
+import { BinaryBuilder } from '../builder/binary.mjs';
+import { BoolBuilder } from '../builder/bool.mjs';
+import { DateBuilder, DateDayBuilder, DateMillisecondBuilder } from '../builder/date.mjs';
+import { DecimalBuilder } from '../builder/decimal.mjs';
+import { DictionaryBuilder } from '../builder/dictionary.mjs';
+import { FixedSizeBinaryBuilder } from '../builder/fixedsizebinary.mjs';
+import { FixedSizeListBuilder } from '../builder/fixedsizelist.mjs';
+import { FloatBuilder, Float16Builder, Float32Builder, Float64Builder } from '../builder/float.mjs';
+import { IntervalBuilder, IntervalDayTimeBuilder, IntervalYearMonthBuilder } from '../builder/interval.mjs';
+import { IntBuilder, Int8Builder, Int16Builder, Int32Builder, Int64Builder, Uint8Builder, Uint16Builder, Uint32Builder, Uint64Builder } from '../builder/int.mjs';
+import { ListBuilder } from '../builder/list.mjs';
+import { MapBuilder } from '../builder/map.mjs';
+import { NullBuilder } from '../builder/null.mjs';
+import { StructBuilder } from '../builder/struct.mjs';
+import { TimestampBuilder, TimestampSecondBuilder, TimestampMillisecondBuilder, TimestampMicrosecondBuilder, TimestampNanosecondBuilder } from '../builder/timestamp.mjs';
+import { TimeBuilder, TimeSecondBuilder, TimeMillisecondBuilder, TimeMicrosecondBuilder, TimeNanosecondBuilder } from '../builder/time.mjs';
+import { UnionBuilder, DenseUnionBuilder, SparseUnionBuilder } from '../builder/union.mjs';
+import { Utf8Builder } from '../builder/utf8.mjs';
+/** @ignore */
+export class GetBuilderCtor extends Visitor {
+    visitNull() { return NullBuilder; }
+    visitBool() { return BoolBuilder; }
+    visitInt() { return IntBuilder; }
+    visitInt8() { return Int8Builder; }
+    visitInt16() { return Int16Builder; }
+    visitInt32() { return Int32Builder; }
+    visitInt64() { return Int64Builder; }
+    visitUint8() { return Uint8Builder; }
+    visitUint16() { return Uint16Builder; }
+    visitUint32() { return Uint32Builder; }
+    visitUint64() { return Uint64Builder; }
+    visitFloat() { return FloatBuilder; }
+    visitFloat16() { return Float16Builder; }
+    visitFloat32() { return Float32Builder; }
+    visitFloat64() { return Float64Builder; }
+    visitUtf8() { return Utf8Builder; }
+    visitBinary() { return BinaryBuilder; }
+    visitFixedSizeBinary() { return FixedSizeBinaryBuilder; }
+    visitDate() { return DateBuilder; }
+    visitDateDay() { return DateDayBuilder; }
+    visitDateMillisecond() { return DateMillisecondBuilder; }
+    visitTimestamp() { return TimestampBuilder; }
+    visitTimestampSecond() { return TimestampSecondBuilder; }
+    visitTimestampMillisecond() { return TimestampMillisecondBuilder; }
+    visitTimestampMicrosecond() { return TimestampMicrosecondBuilder; }
+    visitTimestampNanosecond() { return TimestampNanosecondBuilder; }
+    visitTime() { return TimeBuilder; }
+    visitTimeSecond() { return TimeSecondBuilder; }
+    visitTimeMillisecond() { return TimeMillisecondBuilder; }
+    visitTimeMicrosecond() { return TimeMicrosecondBuilder; }
+    visitTimeNanosecond() { return TimeNanosecondBuilder; }
+    visitDecimal() { return DecimalBuilder; }
+    visitList() { return ListBuilder; }
+    visitStruct() { return StructBuilder; }
+    visitUnion() { return UnionBuilder; }
+    visitDenseUnion() { return DenseUnionBuilder; }
+    visitSparseUnion() { return SparseUnionBuilder; }
+    visitDictionary() { return DictionaryBuilder; }
+    visitInterval() { return IntervalBuilder; }
+    visitIntervalDayTime() { return IntervalDayTimeBuilder; }
+    visitIntervalYearMonth() { return IntervalYearMonthBuilder; }
+    visitFixedSizeList() { return FixedSizeListBuilder; }
+    visitMap() { return MapBuilder; }
+}
+/** @ignore */
+export const instance = new GetBuilderCtor();
+
+//# sourceMappingURL=builderctor.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/builderctor.mjs.map b/igv_component/node_modules/apache-arrow/visitor/builderctor.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..5e43bc7dc7668a2064732820ac8daea8f952540c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/builderctor.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/builderctor.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAMrB,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AAExC,OAAO,EAAE,aAAa,EAAE,MAAM,sBAAsB,CAAC;AACrD,OAAO,EAAE,WAAW,EAAE,MAAM,oBAAoB,CAAC;AACjD,OAAO,EAAE,WAAW,EAAE,cAAc,EAAE,sBAAsB,EAAE,MAAM,oBAAoB,CAAC;AACzF,OAAO,EAAE,cAAc,EAAE,MAAM,uBAAuB,CAAC;AACvD,OAAO,EAAE,iBAAiB,EAAE,MAAM,0BAA0B,CAAC;AAC7D,OAAO,EAAE,sBAAsB,EAAE,MAAM,+BAA+B,CAAC;AACvE,OAAO,EAAE,oBAAoB,EAAE,MAAM,6BAA6B,CAAC;AACnE,OAAO,EAAE,YAAY,EAAE,cAAc,EAAE,cAAc,EAAE,cAAc,EAAE,MAAM,qBAAqB,CAAC;AACnG,OAAO,EAAE,eAAe,EAAE,sBAAsB,EAAE,wBAAwB,EAAE,MAAM,wBAAwB,CAAC;AAC3G,OAAO,EAAE,UAAU,EAAE,WAAW,EAAE,YAAY,EAAE,YAAY,EAAE,YAAY,EAAE,YAAY,EAAE,aAAa,EAAE,aAAa,EAAE,aAAa,EAAE,MAAM,mBAAmB,CAAC;AACjK,OAAO,EAAE,WAAW,EAAE,MAAM,oBAAoB,CAAC;AACjD,OAAO,EAAE,UAAU,EAAE,MAAM,mBAAmB,CAAC;AAC/C,OAAO,EAAE,WAAW,EAAE,MAAM,oBAAoB,CAAC;AACjD,OAAO,EAAE,aAAa,EAAE,MAAM,sBAAsB,CAAC;AACrD,OAAO,EAAE,gBAAgB,EAAE,sBAAsB,EAAE,2BAA2B,EAAE,2BAA2B,EAAE,0BAA0B,EAAE,MAAM,yBAAyB,CAAC;AACzK,OAAO,EAAE,WAAW,EAAE,iBAAiB,EAAE,sBAAsB,EAAE,sBAAsB,EAAE,qBAAqB,EAAE,MAAM,oBAAoB,CAAC;AAC3I,OAAO,EAAE,YAAY,EAAE,iBAAiB,EAAE,kBAAkB,EAAE,MAAM,qBAAqB,CAAC;AAC1F,OAAO,EAAE,WAAW,EAAE,MAAM,oBAAoB,CAAC;AAUjD,cAAc;AACd,MAAM,OAAO,cAAe,SAAQ,OAAO;IAChC,SAAS,KAAK,OAAO,WAAW,CAAC,CAAC,CAAC;IACnC,SAAS,KAAK,OAAO,WAAW,CAAC,CAAC,CAAC;IACnC,QAAQ,KAAK,OAAO,UAAU,CAAC,CAAC,CAAC;IACjC,SAAS,KAAK,OAAO,WAAW,CAAC,CAAC,CAAC;IACnC,UAAU,KAAK,OAAO,YAAY,CAAC,CAAC,CAAC;IACrC,UAAU,KAAK,OAAO,YAAY,CAAC,CAAC,CAAC;IACrC,UAAU,KAAK,OAAO,YAAY,CAAC,CAAC,CAAC;IACrC,UAAU,KAAK,OAAO,YAAY,CAAC,CAAC,CAAC;IACrC,WAAW,KAAK,OAAO,aAAa,CAAC,CAAC,CAAC;IACvC,WAAW,KAAK,OAAO,aAAa,CAAC,CAAC,CAAC;IACvC,WAAW,KAAK,OAAO,aAAa,CAAC,CAAC,CAAC;IACvC,UAAU,KAAK,OAAO,YAAY,CAAC,CAAC,CAAC;IACrC,YAAY,KAAK,OAAO,cAAc,CAAC,CAAC,CAAC;IACzC,YAAY,KAAK,OAAO,cAAc,CAAC,CAAC,CAAC;IACzC,YAAY,KAAK,OAAO,cAAc,CAAC,CAAC,CAAC;IACzC,SAAS,KAAK,OAAO,WAAW,CAAC,CAAC,CAAC;IACnC,WAAW,KAAK,OAAO,aAAa,CAAC,CAAC,CAAC;IACvC,oBAAoB,KAAK,OAAO,sBAAsB,CAAC,CAAC,CAAC;IACzD,SAAS,KAAK,OAAO,WAAW,CAAC,CAAC,CAAC;IACnC,YAAY,KAAK,OAAO,cAAc,CAAC,CAAC,CAAC;IACzC,oBAAoB,KAAK,OAAO,sBAAsB,CAAC,CAAC,CAAC;IACzD,cAAc,KAAK,OAAO,gBAAgB,CAAC,CAAC,CAAC;IAC7C,oBAAoB,KAAK,OAAO,sBAAsB,CAAC,CAAC,CAAC;IACzD,yBAAyB,KAAK,OAAO,2BAA2B,CAAC,CAAC,CAAC;IACnE,yBAAyB,KAAK,OAAO,2BAA2B,CAAC,CAAC,CAAC;IACnE,wBAAwB,KAAK,OAAO,0BAA0B,CAAC,CAAC,CAAC;IACjE,SAAS,KAAK,OAAO,WAAW,CAAC,CAAC,CAAC;IACnC,eAAe,KAAK,OAAO,iBAAiB,CAAC,CAAC,CAAC;IAC/C,oBAAoB,KAAK,OAAO,sBAAsB,CAAC,CAAC,CAAC;IACzD,oBAAoB,KAAK,OAAO,sBAAsB,CAAC,CAAC,CAAC;IACzD,mBAAmB,KAAK,OAAO,qBAAqB,CAAC,CAAC,CAAC;IACvD,YAAY,KAAK,OAAO,cAAc,CAAC,CAAC,CAAC;IACzC,SAAS,KAAK,OAAO,WAAW,CAAC,CAAC,CAAC;IACnC,WAAW,KAAK,OAAO,aAAa,CAAC,CAAC,CAAC;IACvC,UAAU,KAAK,OAAO,YAAY,CAAC,CAAC,CAAC;IACrC,eAAe,KAAK,OAAO,iBAAiB,CAAC,CAAC,CAAC;IAC/C,gBAAgB,KAAK,OAAO,kBAAkB,CAAC,CAAC,CAAC;IACjD,eAAe,KAAK,OAAO,iBAAiB,CAAC,CAAC,CAAC;IAC/C,aAAa,KAAK,OAAO,eAAe,CAAC,CAAC,CAAC;IAC3C,oBAAoB,KAAK,OAAO,sBAAsB,CAAC,CAAC,CAAC;IACzD,sBAAsB,KAAK,OAAO,wBAAwB,CAAC,CAAC,CAAC;IAC7D,kBAAkB,KAAK,OAAO,oBAAoB,CAAC,CAAC,CAAC;IACrD,QAAQ,KAAK,OAAO,UAAU,CAAC,CAAC,CAAC;CAC3C;AAED,cAAc;AACd,MAAM,CAAC,MAAM,QAAQ,GAAG,IAAI,cAAc,EAAE,CAAC","file":"builderctor.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/bytelength.d.ts b/igv_component/node_modules/apache-arrow/visitor/bytelength.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..ccbd725bfa7e7881f33ef71c76d3ab8e845cff2c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/bytelength.d.ts
@@ -0,0 +1,36 @@
+import { Data } from '../data.js';
+import { Visitor } from '../visitor.js';
+import { TypeToDataType } from '../interfaces.js';
+import { Type } from '../enum.js';
+import { DataType, Dictionary, Float, Int, Date_, Interval, Time, Timestamp, Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct, DenseUnion, SparseUnion } from '../type.js';
+/** @ignore */
+export interface GetByteLengthVisitor extends Visitor {
+    visit<T extends DataType>(node: Data<T>, index: number): number;
+    visitMany<T extends DataType>(nodes: Data<T>[], index: number[]): number[];
+    getVisitFn<T extends DataType>(node: Data<T> | T): (data: Data<T>, index: number) => number;
+    getVisitFn<T extends Type>(node: T): (data: Data<TypeToDataType<T>>, index: number) => number;
+    visitBinary<T extends Binary>(data: Data<T>, index: number): number;
+    visitUtf8<T extends Utf8>(data: Data<T>, index: number): number;
+    visitList<T extends List>(data: Data<T>, index: number): number;
+    visitDenseUnion<T extends DenseUnion>(data: Data<T>, index: number): number;
+    visitSparseUnion<T extends SparseUnion>(data: Data<T>, index: number): number;
+    visitFixedSizeList<T extends FixedSizeList>(data: Data<T>, index: number): number;
+}
+/** @ignore */
+export declare class GetByteLengthVisitor extends Visitor {
+    visitNull(____: Data<Null>, _: number): number;
+    visitInt(data: Data<Int>, _: number): number;
+    visitFloat(data: Data<Float>, _: number): number;
+    visitBool(____: Data<Bool>, _: number): number;
+    visitDecimal(data: Data<Decimal>, _: number): number;
+    visitDate(data: Data<Date_>, _: number): number;
+    visitTime(data: Data<Time>, _: number): number;
+    visitTimestamp(data: Data<Timestamp>, _: number): 4 | 8;
+    visitInterval(data: Data<Interval>, _: number): number;
+    visitStruct(data: Data<Struct>, i: number): number;
+    visitFixedSizeBinary(data: Data<FixedSizeBinary>, _: number): number;
+    visitMap(data: Data<Map_>, i: number): number;
+    visitDictionary(data: Data<Dictionary>, i: number): number;
+}
+/** @ignore */
+export declare const instance: GetByteLengthVisitor;
diff --git a/igv_component/node_modules/apache-arrow/visitor/bytelength.d.ts.map b/igv_component/node_modules/apache-arrow/visitor/bytelength.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..edb44bc4f3c89862de421c5a82de621eba16e55f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/bytelength.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/bytelength.ts"],"names":[],"mappings":"AAqBA,OAAO,EAAE,IAAI,EAAE,MAAM,YAAY,CAAC;AAClC,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AACxC,OAAO,EAAE,cAAc,EAAE,MAAM,kBAAkB,CAAC;AAClD,OAAO,EAAE,IAAI,EAAuB,MAAM,YAAY,CAAC;AACvD,OAAO,EACH,QAAQ,EAAE,UAAU,EACpB,KAAK,EAAE,GAAG,EAAE,KAAK,EAAE,QAAQ,EAAE,IAAI,EAAE,SAAS,EAC5C,IAAI,EAAE,IAAI,EAAE,IAAI,EAAE,MAAM,EAAE,OAAO,EAAE,eAAe,EAClD,IAAI,EAAE,aAAa,EAAE,IAAI,EAAE,MAAM,EAAS,UAAU,EAAE,WAAW,EACpE,MAAM,YAAY,CAAC;AAIpB,cAAc;AACd,MAAM,WAAW,oBAAqB,SAAQ,OAAO;IACjD,KAAK,CAAC,CAAC,SAAS,QAAQ,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,GAAG,MAAM,CAAC;IAChE,SAAS,CAAC,CAAC,SAAS,QAAQ,EAAE,KAAK,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,EAAE,KAAK,EAAE,MAAM,EAAE,GAAG,MAAM,EAAE,CAAC;IAC3E,UAAU,CAAC,CAAC,SAAS,QAAQ,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG,CAAC,GAAG,CAAC,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,KAAK,MAAM,CAAC;IAC5F,UAAU,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,CAAC,GAAG,CAAC,IAAI,EAAE,IAAI,CAAC,cAAc,CAAC,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,KAAK,MAAM,CAAC;IAC9F,WAAW,CAAC,CAAC,SAAS,MAAM,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,GAAG,MAAM,CAAC;IACpE,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,GAAG,MAAM,CAAC;IAChE,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,GAAG,MAAM,CAAC;IAChE,eAAe,CAAC,CAAC,SAAS,UAAU,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,GAAG,MAAM,CAAC;IAC5E,gBAAgB,CAAC,CAAC,SAAS,WAAW,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,GAAG,MAAM,CAAC;IAC9E,kBAAkB,CAAC,CAAC,SAAS,aAAa,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,GAAG,MAAM,CAAC;CACrF;AAED,cAAc;AACd,qBAAa,oBAAqB,SAAQ,OAAO;IACtC,SAAS,CAAC,IAAI,EAAE,IAAI,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,MAAM;IAGrC,QAAQ,CAAC,IAAI,EAAE,IAAI,CAAC,GAAG,CAAC,EAAE,CAAC,EAAE,MAAM;IAGnC,UAAU,CAAC,IAAI,EAAE,IAAI,CAAC,KAAK,CAAC,EAAE,CAAC,EAAE,MAAM;IAGvC,SAAS,CAAC,IAAI,EAAE,IAAI,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,MAAM;IAGrC,YAAY,CAAC,IAAI,EAAE,IAAI,CAAC,OAAO,CAAC,EAAE,CAAC,EAAE,MAAM;IAG3C,SAAS,CAAC,IAAI,EAAE,IAAI,CAAC,KAAK,CAAC,EAAE,CAAC,EAAE,MAAM;IAGtC,SAAS,CAAC,IAAI,EAAE,IAAI,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,MAAM;IAGrC,cAAc,CAAC,IAAI,EAAE,IAAI,CAAC,SAAS,CAAC,EAAE,CAAC,EAAE,MAAM;IAG/C,aAAa,CAAC,IAAI,EAAE,IAAI,CAAC,QAAQ,CAAC,EAAE,CAAC,EAAE,MAAM;IAG7C,WAAW,CAAC,IAAI,EAAE,IAAI,CAAC,MAAM,CAAC,EAAE,CAAC,EAAE,MAAM;IAGzC,oBAAoB,CAAC,IAAI,EAAE,IAAI,CAAC,eAAe,CAAC,EAAE,CAAC,EAAE,MAAM;IAG3D,QAAQ,CAAC,IAAI,EAAE,IAAI,CAAC,IAAI,CAAC,EAAE,CAAC,EAAE,MAAM;IAIpC,eAAe,CAAC,IAAI,EAAE,IAAI,CAAC,UAAU,CAAC,EAAE,CAAC,EAAE,MAAM;CAG3D;AAuED,cAAc;AACd,eAAO,MAAM,QAAQ,sBAA6B,CAAC","file":"bytelength.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/bytelength.js b/igv_component/node_modules/apache-arrow/visitor/bytelength.js
new file mode 100644
index 0000000000000000000000000000000000000000..80880c54612276805cdab6ed6ec3f87867d439aa
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/bytelength.js
@@ -0,0 +1,115 @@
+"use strict";
+/* istanbul ignore file */
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.instance = exports.GetByteLengthVisitor = void 0;
+const visitor_js_1 = require("../visitor.js");
+const enum_js_1 = require("../enum.js");
+/** @ignore */ const sum = (x, y) => x + y;
+/** @ignore */
+class GetByteLengthVisitor extends visitor_js_1.Visitor {
+    visitNull(____, _) {
+        return 0;
+    }
+    visitInt(data, _) {
+        return data.type.bitWidth / 8;
+    }
+    visitFloat(data, _) {
+        return data.type.ArrayType.BYTES_PER_ELEMENT;
+    }
+    visitBool(____, _) {
+        return 1 / 8;
+    }
+    visitDecimal(data, _) {
+        return data.type.bitWidth / 8;
+    }
+    visitDate(data, _) {
+        return (data.type.unit + 1) * 4;
+    }
+    visitTime(data, _) {
+        return data.type.bitWidth / 8;
+    }
+    visitTimestamp(data, _) {
+        return data.type.unit === enum_js_1.TimeUnit.SECOND ? 4 : 8;
+    }
+    visitInterval(data, _) {
+        return (data.type.unit + 1) * 4;
+    }
+    visitStruct(data, i) {
+        return data.children.reduce((total, child) => total + exports.instance.visit(child, i), 0);
+    }
+    visitFixedSizeBinary(data, _) {
+        return data.type.byteWidth;
+    }
+    visitMap(data, i) {
+        // 4 + 4 for the indices
+        return 8 + data.children.reduce((total, child) => total + exports.instance.visit(child, i), 0);
+    }
+    visitDictionary(data, i) {
+        var _a;
+        return (data.type.indices.bitWidth / 8) + (((_a = data.dictionary) === null || _a === void 0 ? void 0 : _a.getByteLength(data.values[i])) || 0);
+    }
+}
+exports.GetByteLengthVisitor = GetByteLengthVisitor;
+/** @ignore */
+const getUtf8ByteLength = ({ valueOffsets }, index) => {
+    // 4 + 4 for the indices, `end - start` for the data bytes
+    return 8 + (valueOffsets[index + 1] - valueOffsets[index]);
+};
+/** @ignore */
+const getBinaryByteLength = ({ valueOffsets }, index) => {
+    // 4 + 4 for the indices, `end - start` for the data bytes
+    return 8 + (valueOffsets[index + 1] - valueOffsets[index]);
+};
+/** @ignore */
+const getListByteLength = ({ valueOffsets, stride, children }, index) => {
+    const child = children[0];
+    const { [index * stride]: start } = valueOffsets;
+    const { [index * stride + 1]: end } = valueOffsets;
+    const visit = exports.instance.getVisitFn(child.type);
+    const slice = child.slice(start, end - start);
+    let size = 8; // 4 + 4 for the indices
+    for (let idx = -1, len = end - start; ++idx < len;) {
+        size += visit(slice, idx);
+    }
+    return size;
+};
+/** @ignore */
+const getFixedSizeListByteLength = ({ stride, children }, index) => {
+    const child = children[0];
+    const slice = child.slice(index * stride, stride);
+    const visit = exports.instance.getVisitFn(child.type);
+    let size = 0;
+    for (let idx = -1, len = slice.length; ++idx < len;) {
+        size += visit(slice, idx);
+    }
+    return size;
+};
+/* istanbul ignore next */
+/** @ignore */
+const getUnionByteLength = (data, index) => {
+    return data.type.mode === enum_js_1.UnionMode.Dense ?
+        getDenseUnionByteLength(data, index) :
+        getSparseUnionByteLength(data, index);
+};
+/** @ignore */
+const getDenseUnionByteLength = ({ type, children, typeIds, valueOffsets }, index) => {
+    const childIndex = type.typeIdToChildIndex[typeIds[index]];
+    // 4 for the typeId, 4 for the valueOffsets, then the child at the offset
+    return 8 + exports.instance.visit(children[childIndex], valueOffsets[index]);
+};
+/** @ignore */
+const getSparseUnionByteLength = ({ children }, index) => {
+    // 4 for the typeId, then once each for the children at this index
+    return 4 + exports.instance.visitMany(children, children.map(() => index)).reduce(sum, 0);
+};
+GetByteLengthVisitor.prototype.visitUtf8 = getUtf8ByteLength;
+GetByteLengthVisitor.prototype.visitBinary = getBinaryByteLength;
+GetByteLengthVisitor.prototype.visitList = getListByteLength;
+GetByteLengthVisitor.prototype.visitFixedSizeList = getFixedSizeListByteLength;
+GetByteLengthVisitor.prototype.visitUnion = getUnionByteLength;
+GetByteLengthVisitor.prototype.visitDenseUnion = getDenseUnionByteLength;
+GetByteLengthVisitor.prototype.visitSparseUnion = getSparseUnionByteLength;
+/** @ignore */
+exports.instance = new GetByteLengthVisitor();
+
+//# sourceMappingURL=bytelength.js.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/bytelength.js.map b/igv_component/node_modules/apache-arrow/visitor/bytelength.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..cefae40a47dfe884e1525f6e2b8f01735330e626
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/bytelength.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/bytelength.mjs b/igv_component/node_modules/apache-arrow/visitor/bytelength.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..c7080c68d559024e307337a974a957495a8ba9d6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/bytelength.mjs
@@ -0,0 +1,111 @@
+/* istanbul ignore file */
+import { Visitor } from '../visitor.mjs';
+import { TimeUnit, UnionMode } from '../enum.mjs';
+/** @ignore */ const sum = (x, y) => x + y;
+/** @ignore */
+export class GetByteLengthVisitor extends Visitor {
+    visitNull(____, _) {
+        return 0;
+    }
+    visitInt(data, _) {
+        return data.type.bitWidth / 8;
+    }
+    visitFloat(data, _) {
+        return data.type.ArrayType.BYTES_PER_ELEMENT;
+    }
+    visitBool(____, _) {
+        return 1 / 8;
+    }
+    visitDecimal(data, _) {
+        return data.type.bitWidth / 8;
+    }
+    visitDate(data, _) {
+        return (data.type.unit + 1) * 4;
+    }
+    visitTime(data, _) {
+        return data.type.bitWidth / 8;
+    }
+    visitTimestamp(data, _) {
+        return data.type.unit === TimeUnit.SECOND ? 4 : 8;
+    }
+    visitInterval(data, _) {
+        return (data.type.unit + 1) * 4;
+    }
+    visitStruct(data, i) {
+        return data.children.reduce((total, child) => total + instance.visit(child, i), 0);
+    }
+    visitFixedSizeBinary(data, _) {
+        return data.type.byteWidth;
+    }
+    visitMap(data, i) {
+        // 4 + 4 for the indices
+        return 8 + data.children.reduce((total, child) => total + instance.visit(child, i), 0);
+    }
+    visitDictionary(data, i) {
+        var _a;
+        return (data.type.indices.bitWidth / 8) + (((_a = data.dictionary) === null || _a === void 0 ? void 0 : _a.getByteLength(data.values[i])) || 0);
+    }
+}
+/** @ignore */
+const getUtf8ByteLength = ({ valueOffsets }, index) => {
+    // 4 + 4 for the indices, `end - start` for the data bytes
+    return 8 + (valueOffsets[index + 1] - valueOffsets[index]);
+};
+/** @ignore */
+const getBinaryByteLength = ({ valueOffsets }, index) => {
+    // 4 + 4 for the indices, `end - start` for the data bytes
+    return 8 + (valueOffsets[index + 1] - valueOffsets[index]);
+};
+/** @ignore */
+const getListByteLength = ({ valueOffsets, stride, children }, index) => {
+    const child = children[0];
+    const { [index * stride]: start } = valueOffsets;
+    const { [index * stride + 1]: end } = valueOffsets;
+    const visit = instance.getVisitFn(child.type);
+    const slice = child.slice(start, end - start);
+    let size = 8; // 4 + 4 for the indices
+    for (let idx = -1, len = end - start; ++idx < len;) {
+        size += visit(slice, idx);
+    }
+    return size;
+};
+/** @ignore */
+const getFixedSizeListByteLength = ({ stride, children }, index) => {
+    const child = children[0];
+    const slice = child.slice(index * stride, stride);
+    const visit = instance.getVisitFn(child.type);
+    let size = 0;
+    for (let idx = -1, len = slice.length; ++idx < len;) {
+        size += visit(slice, idx);
+    }
+    return size;
+};
+/* istanbul ignore next */
+/** @ignore */
+const getUnionByteLength = (data, index) => {
+    return data.type.mode === UnionMode.Dense ?
+        getDenseUnionByteLength(data, index) :
+        getSparseUnionByteLength(data, index);
+};
+/** @ignore */
+const getDenseUnionByteLength = ({ type, children, typeIds, valueOffsets }, index) => {
+    const childIndex = type.typeIdToChildIndex[typeIds[index]];
+    // 4 for the typeId, 4 for the valueOffsets, then the child at the offset
+    return 8 + instance.visit(children[childIndex], valueOffsets[index]);
+};
+/** @ignore */
+const getSparseUnionByteLength = ({ children }, index) => {
+    // 4 for the typeId, then once each for the children at this index
+    return 4 + instance.visitMany(children, children.map(() => index)).reduce(sum, 0);
+};
+GetByteLengthVisitor.prototype.visitUtf8 = getUtf8ByteLength;
+GetByteLengthVisitor.prototype.visitBinary = getBinaryByteLength;
+GetByteLengthVisitor.prototype.visitList = getListByteLength;
+GetByteLengthVisitor.prototype.visitFixedSizeList = getFixedSizeListByteLength;
+GetByteLengthVisitor.prototype.visitUnion = getUnionByteLength;
+GetByteLengthVisitor.prototype.visitDenseUnion = getDenseUnionByteLength;
+GetByteLengthVisitor.prototype.visitSparseUnion = getSparseUnionByteLength;
+/** @ignore */
+export const instance = new GetByteLengthVisitor();
+
+//# sourceMappingURL=bytelength.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/bytelength.mjs.map b/igv_component/node_modules/apache-arrow/visitor/bytelength.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..3c7bd3f047377e6496c096b4cc25775f7a856748
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/bytelength.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/get.d.ts b/igv_component/node_modules/apache-arrow/visitor/get.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..846e5f4dde468aedbcdab05975e80d9fb8a6a374
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/get.d.ts
@@ -0,0 +1,61 @@
+import { Data } from '../data.js';
+import { Vector } from '../vector.js';
+import { Visitor } from '../visitor.js';
+import { TypeToDataType } from '../interfaces.js';
+import { Type } from '../enum.js';
+import { DataType, Dictionary, Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct, Float, Float16, Float32, Float64, Int, Uint8, Uint16, Uint32, Uint64, Int8, Int16, Int32, Int64, Date_, DateDay, DateMillisecond, Interval, IntervalDayTime, IntervalYearMonth, Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond, Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond, Union, DenseUnion, SparseUnion } from '../type.js';
+/** @ignore */
+export interface GetVisitor extends Visitor {
+    visit<T extends DataType>(node: Data<T>, index: number): T['TValue'] | null;
+    visitMany<T extends DataType>(nodes: Data<T>[], indices: number[]): (T['TValue'] | null)[];
+    getVisitFn<T extends DataType>(node: Vector<T> | Data<T> | T): (data: Data<T>, index: number) => T['TValue'] | null;
+    getVisitFn<T extends Type>(node: T): (data: Data<TypeToDataType<T>>, index: number) => TypeToDataType<T>['TValue'];
+    visitNull<T extends Null>(data: Data<T>, index: number): T['TValue'] | null;
+    visitBool<T extends Bool>(data: Data<T>, index: number): T['TValue'] | null;
+    visitInt<T extends Int>(data: Data<T>, index: number): T['TValue'] | null;
+    visitInt8<T extends Int8>(data: Data<T>, index: number): T['TValue'] | null;
+    visitInt16<T extends Int16>(data: Data<T>, index: number): T['TValue'] | null;
+    visitInt32<T extends Int32>(data: Data<T>, index: number): T['TValue'] | null;
+    visitInt64<T extends Int64>(data: Data<T>, index: number): T['TValue'] | null;
+    visitUint8<T extends Uint8>(data: Data<T>, index: number): T['TValue'] | null;
+    visitUint16<T extends Uint16>(data: Data<T>, index: number): T['TValue'] | null;
+    visitUint32<T extends Uint32>(data: Data<T>, index: number): T['TValue'] | null;
+    visitUint64<T extends Uint64>(data: Data<T>, index: number): T['TValue'] | null;
+    visitFloat<T extends Float>(data: Data<T>, index: number): T['TValue'] | null;
+    visitFloat16<T extends Float16>(data: Data<T>, index: number): T['TValue'] | null;
+    visitFloat32<T extends Float32>(data: Data<T>, index: number): T['TValue'] | null;
+    visitFloat64<T extends Float64>(data: Data<T>, index: number): T['TValue'] | null;
+    visitUtf8<T extends Utf8>(data: Data<T>, index: number): T['TValue'] | null;
+    visitBinary<T extends Binary>(data: Data<T>, index: number): T['TValue'] | null;
+    visitFixedSizeBinary<T extends FixedSizeBinary>(data: Data<T>, index: number): T['TValue'] | null;
+    visitDate<T extends Date_>(data: Data<T>, index: number): T['TValue'] | null;
+    visitDateDay<T extends DateDay>(data: Data<T>, index: number): T['TValue'] | null;
+    visitDateMillisecond<T extends DateMillisecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimestamp<T extends Timestamp>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimestampSecond<T extends TimestampSecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimestampMillisecond<T extends TimestampMillisecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimestampMicrosecond<T extends TimestampMicrosecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimestampNanosecond<T extends TimestampNanosecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTime<T extends Time>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimeSecond<T extends TimeSecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimeMillisecond<T extends TimeMillisecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimeMicrosecond<T extends TimeMicrosecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitTimeNanosecond<T extends TimeNanosecond>(data: Data<T>, index: number): T['TValue'] | null;
+    visitDecimal<T extends Decimal>(data: Data<T>, index: number): T['TValue'] | null;
+    visitList<T extends List>(data: Data<T>, index: number): T['TValue'] | null;
+    visitStruct<T extends Struct>(data: Data<T>, index: number): T['TValue'] | null;
+    visitUnion<T extends Union>(data: Data<T>, index: number): T['TValue'] | null;
+    visitDenseUnion<T extends DenseUnion>(data: Data<T>, index: number): T['TValue'] | null;
+    visitSparseUnion<T extends SparseUnion>(data: Data<T>, index: number): T['TValue'] | null;
+    visitDictionary<T extends Dictionary>(data: Data<T>, index: number): T['TValue'] | null;
+    visitInterval<T extends Interval>(data: Data<T>, index: number): T['TValue'] | null;
+    visitIntervalDayTime<T extends IntervalDayTime>(data: Data<T>, index: number): T['TValue'] | null;
+    visitIntervalYearMonth<T extends IntervalYearMonth>(data: Data<T>, index: number): T['TValue'] | null;
+    visitFixedSizeList<T extends FixedSizeList>(data: Data<T>, index: number): T['TValue'] | null;
+    visitMap<T extends Map_>(data: Data<T>, index: number): T['TValue'] | null;
+}
+/** @ignore */
+export declare class GetVisitor extends Visitor {
+}
+/** @ignore */
+export declare const instance: GetVisitor;
diff --git a/igv_component/node_modules/apache-arrow/visitor/get.d.ts.map b/igv_component/node_modules/apache-arrow/visitor/get.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..130f7e0ca8c01f4376958a452b06091175aecf3b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/get.d.ts.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/get.js b/igv_component/node_modules/apache-arrow/visitor/get.js
new file mode 100644
index 0000000000000000000000000000000000000000..6a0001e0d78c4c65348511d12ba861be99a82825
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/get.js
@@ -0,0 +1,239 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.instance = exports.GetVisitor = void 0;
+const bn_js_1 = require("../util/bn.js");
+const vector_js_1 = require("../vector.js");
+const visitor_js_1 = require("../visitor.js");
+const map_js_1 = require("../row/map.js");
+const struct_js_1 = require("../row/struct.js");
+const utf8_js_1 = require("../util/utf8.js");
+const math_js_1 = require("../util/math.js");
+const enum_js_1 = require("../enum.js");
+/** @ignore */
+class GetVisitor extends visitor_js_1.Visitor {
+}
+exports.GetVisitor = GetVisitor;
+/** @ignore */
+function wrapGet(fn) {
+    return (data, _1) => data.getValid(_1) ? fn(data, _1) : null;
+}
+/** @ignore */ const epochDaysToMs = (data, index) => 86400000 * data[index];
+/** @ignore */ const epochMillisecondsLongToMs = (data, index) => 4294967296 * (data[index + 1]) + (data[index] >>> 0);
+/** @ignore */ const epochMicrosecondsLongToMs = (data, index) => 4294967296 * (data[index + 1] / 1000) + ((data[index] >>> 0) / 1000);
+/** @ignore */ const epochNanosecondsLongToMs = (data, index) => 4294967296 * (data[index + 1] / 1000000) + ((data[index] >>> 0) / 1000000);
+/** @ignore */ const epochMillisecondsToDate = (epochMs) => new Date(epochMs);
+/** @ignore */ const epochDaysToDate = (data, index) => epochMillisecondsToDate(epochDaysToMs(data, index));
+/** @ignore */ const epochMillisecondsLongToDate = (data, index) => epochMillisecondsToDate(epochMillisecondsLongToMs(data, index));
+/** @ignore */
+const getNull = (_data, _index) => null;
+/** @ignore */
+const getVariableWidthBytes = (values, valueOffsets, index) => {
+    if (index + 1 >= valueOffsets.length) {
+        return null;
+    }
+    const x = valueOffsets[index];
+    const y = valueOffsets[index + 1];
+    return values.subarray(x, y);
+};
+/** @ignore */
+const getBool = ({ offset, values }, index) => {
+    const idx = offset + index;
+    const byte = values[idx >> 3];
+    return (byte & 1 << (idx % 8)) !== 0;
+};
+/** @ignore */
+const getDateDay = ({ values }, index) => epochDaysToDate(values, index);
+/** @ignore */
+const getDateMillisecond = ({ values }, index) => epochMillisecondsLongToDate(values, index * 2);
+/** @ignore */
+const getNumeric = ({ stride, values }, index) => values[stride * index];
+/** @ignore */
+const getFloat16 = ({ stride, values }, index) => (0, math_js_1.uint16ToFloat64)(values[stride * index]);
+/** @ignore */
+const getBigInts = ({ values }, index) => values[index];
+/** @ignore */
+const getFixedSizeBinary = ({ stride, values }, index) => values.subarray(stride * index, stride * (index + 1));
+/** @ignore */
+const getBinary = ({ values, valueOffsets }, index) => getVariableWidthBytes(values, valueOffsets, index);
+/** @ignore */
+const getUtf8 = ({ values, valueOffsets }, index) => {
+    const bytes = getVariableWidthBytes(values, valueOffsets, index);
+    return bytes !== null ? (0, utf8_js_1.decodeUtf8)(bytes) : null;
+};
+/* istanbul ignore next */
+/** @ignore */
+const getInt = ({ values }, index) => values[index];
+/* istanbul ignore next */
+/** @ignore */
+const getFloat = ({ type, values }, index) => (type.precision !== enum_js_1.Precision.HALF ? values[index] : (0, math_js_1.uint16ToFloat64)(values[index]));
+/* istanbul ignore next */
+/** @ignore */
+const getDate = (data, index) => (data.type.unit === enum_js_1.DateUnit.DAY
+    ? getDateDay(data, index)
+    : getDateMillisecond(data, index));
+/** @ignore */
+const getTimestampSecond = ({ values }, index) => 1000 * epochMillisecondsLongToMs(values, index * 2);
+/** @ignore */
+const getTimestampMillisecond = ({ values }, index) => epochMillisecondsLongToMs(values, index * 2);
+/** @ignore */
+const getTimestampMicrosecond = ({ values }, index) => epochMicrosecondsLongToMs(values, index * 2);
+/** @ignore */
+const getTimestampNanosecond = ({ values }, index) => epochNanosecondsLongToMs(values, index * 2);
+/* istanbul ignore next */
+/** @ignore */
+const getTimestamp = (data, index) => {
+    switch (data.type.unit) {
+        case enum_js_1.TimeUnit.SECOND: return getTimestampSecond(data, index);
+        case enum_js_1.TimeUnit.MILLISECOND: return getTimestampMillisecond(data, index);
+        case enum_js_1.TimeUnit.MICROSECOND: return getTimestampMicrosecond(data, index);
+        case enum_js_1.TimeUnit.NANOSECOND: return getTimestampNanosecond(data, index);
+    }
+};
+/** @ignore */
+const getTimeSecond = ({ values }, index) => values[index];
+/** @ignore */
+const getTimeMillisecond = ({ values }, index) => values[index];
+/** @ignore */
+const getTimeMicrosecond = ({ values }, index) => values[index];
+/** @ignore */
+const getTimeNanosecond = ({ values }, index) => values[index];
+/* istanbul ignore next */
+/** @ignore */
+const getTime = (data, index) => {
+    switch (data.type.unit) {
+        case enum_js_1.TimeUnit.SECOND: return getTimeSecond(data, index);
+        case enum_js_1.TimeUnit.MILLISECOND: return getTimeMillisecond(data, index);
+        case enum_js_1.TimeUnit.MICROSECOND: return getTimeMicrosecond(data, index);
+        case enum_js_1.TimeUnit.NANOSECOND: return getTimeNanosecond(data, index);
+    }
+};
+/** @ignore */
+const getDecimal = ({ values, stride }, index) => bn_js_1.BN.decimal(values.subarray(stride * index, stride * (index + 1)));
+/** @ignore */
+const getList = (data, index) => {
+    const { valueOffsets, stride, children } = data;
+    const { [index * stride]: begin, [index * stride + 1]: end } = valueOffsets;
+    const child = children[0];
+    const slice = child.slice(begin, end - begin);
+    return new vector_js_1.Vector([slice]);
+};
+/** @ignore */
+const getMap = (data, index) => {
+    const { valueOffsets, children } = data;
+    const { [index]: begin, [index + 1]: end } = valueOffsets;
+    const child = children[0];
+    return new map_js_1.MapRow(child.slice(begin, end - begin));
+};
+/** @ignore */
+const getStruct = (data, index) => {
+    return new struct_js_1.StructRow(data, index);
+};
+/* istanbul ignore next */
+/** @ignore */
+const getUnion = (data, index) => {
+    return data.type.mode === enum_js_1.UnionMode.Dense ?
+        getDenseUnion(data, index) :
+        getSparseUnion(data, index);
+};
+/** @ignore */
+const getDenseUnion = (data, index) => {
+    const childIndex = data.type.typeIdToChildIndex[data.typeIds[index]];
+    const child = data.children[childIndex];
+    return exports.instance.visit(child, data.valueOffsets[index]);
+};
+/** @ignore */
+const getSparseUnion = (data, index) => {
+    const childIndex = data.type.typeIdToChildIndex[data.typeIds[index]];
+    const child = data.children[childIndex];
+    return exports.instance.visit(child, index);
+};
+/** @ignore */
+const getDictionary = (data, index) => {
+    var _a;
+    return (_a = data.dictionary) === null || _a === void 0 ? void 0 : _a.get(data.values[index]);
+};
+/* istanbul ignore next */
+/** @ignore */
+const getInterval = (data, index) => (data.type.unit === enum_js_1.IntervalUnit.DAY_TIME)
+    ? getIntervalDayTime(data, index)
+    : getIntervalYearMonth(data, index);
+/** @ignore */
+const getIntervalDayTime = ({ values }, index) => values.subarray(2 * index, 2 * (index + 1));
+/** @ignore */
+const getIntervalYearMonth = ({ values }, index) => {
+    const interval = values[index];
+    const int32s = new Int32Array(2);
+    int32s[0] = Math.trunc(interval / 12); /* years */
+    int32s[1] = Math.trunc(interval % 12); /* months */
+    return int32s;
+};
+/** @ignore */
+const getFixedSizeList = (data, index) => {
+    const { stride, children } = data;
+    const child = children[0];
+    const slice = child.slice(index * stride, stride);
+    return new vector_js_1.Vector([slice]);
+};
+GetVisitor.prototype.visitNull = wrapGet(getNull);
+GetVisitor.prototype.visitBool = wrapGet(getBool);
+GetVisitor.prototype.visitInt = wrapGet(getInt);
+GetVisitor.prototype.visitInt8 = wrapGet(getNumeric);
+GetVisitor.prototype.visitInt16 = wrapGet(getNumeric);
+GetVisitor.prototype.visitInt32 = wrapGet(getNumeric);
+GetVisitor.prototype.visitInt64 = wrapGet(getBigInts);
+GetVisitor.prototype.visitUint8 = wrapGet(getNumeric);
+GetVisitor.prototype.visitUint16 = wrapGet(getNumeric);
+GetVisitor.prototype.visitUint32 = wrapGet(getNumeric);
+GetVisitor.prototype.visitUint64 = wrapGet(getBigInts);
+GetVisitor.prototype.visitFloat = wrapGet(getFloat);
+GetVisitor.prototype.visitFloat16 = wrapGet(getFloat16);
+GetVisitor.prototype.visitFloat32 = wrapGet(getNumeric);
+GetVisitor.prototype.visitFloat64 = wrapGet(getNumeric);
+GetVisitor.prototype.visitUtf8 = wrapGet(getUtf8);
+GetVisitor.prototype.visitBinary = wrapGet(getBinary);
+GetVisitor.prototype.visitFixedSizeBinary = wrapGet(getFixedSizeBinary);
+GetVisitor.prototype.visitDate = wrapGet(getDate);
+GetVisitor.prototype.visitDateDay = wrapGet(getDateDay);
+GetVisitor.prototype.visitDateMillisecond = wrapGet(getDateMillisecond);
+GetVisitor.prototype.visitTimestamp = wrapGet(getTimestamp);
+GetVisitor.prototype.visitTimestampSecond = wrapGet(getTimestampSecond);
+GetVisitor.prototype.visitTimestampMillisecond = wrapGet(getTimestampMillisecond);
+GetVisitor.prototype.visitTimestampMicrosecond = wrapGet(getTimestampMicrosecond);
+GetVisitor.prototype.visitTimestampNanosecond = wrapGet(getTimestampNanosecond);
+GetVisitor.prototype.visitTime = wrapGet(getTime);
+GetVisitor.prototype.visitTimeSecond = wrapGet(getTimeSecond);
+GetVisitor.prototype.visitTimeMillisecond = wrapGet(getTimeMillisecond);
+GetVisitor.prototype.visitTimeMicrosecond = wrapGet(getTimeMicrosecond);
+GetVisitor.prototype.visitTimeNanosecond = wrapGet(getTimeNanosecond);
+GetVisitor.prototype.visitDecimal = wrapGet(getDecimal);
+GetVisitor.prototype.visitList = wrapGet(getList);
+GetVisitor.prototype.visitStruct = wrapGet(getStruct);
+GetVisitor.prototype.visitUnion = wrapGet(getUnion);
+GetVisitor.prototype.visitDenseUnion = wrapGet(getDenseUnion);
+GetVisitor.prototype.visitSparseUnion = wrapGet(getSparseUnion);
+GetVisitor.prototype.visitDictionary = wrapGet(getDictionary);
+GetVisitor.prototype.visitInterval = wrapGet(getInterval);
+GetVisitor.prototype.visitIntervalDayTime = wrapGet(getIntervalDayTime);
+GetVisitor.prototype.visitIntervalYearMonth = wrapGet(getIntervalYearMonth);
+GetVisitor.prototype.visitFixedSizeList = wrapGet(getFixedSizeList);
+GetVisitor.prototype.visitMap = wrapGet(getMap);
+/** @ignore */
+exports.instance = new GetVisitor();
+
+//# sourceMappingURL=get.js.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/get.js.map b/igv_component/node_modules/apache-arrow/visitor/get.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..b17cf7760422491375b3594d044762ca4b4c7aa7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/get.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/get.mjs b/igv_component/node_modules/apache-arrow/visitor/get.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..72e2c285b78880486e6de1c9fa78ebb56aa14b02
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/get.mjs
@@ -0,0 +1,235 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { BN } from '../util/bn.mjs';
+import { Vector } from '../vector.mjs';
+import { Visitor } from '../visitor.mjs';
+import { MapRow } from '../row/map.mjs';
+import { StructRow } from '../row/struct.mjs';
+import { decodeUtf8 } from '../util/utf8.mjs';
+import { uint16ToFloat64 } from '../util/math.mjs';
+import { UnionMode, Precision, DateUnit, TimeUnit, IntervalUnit } from '../enum.mjs';
+/** @ignore */
+export class GetVisitor extends Visitor {
+}
+/** @ignore */
+function wrapGet(fn) {
+    return (data, _1) => data.getValid(_1) ? fn(data, _1) : null;
+}
+/** @ignore */ const epochDaysToMs = (data, index) => 86400000 * data[index];
+/** @ignore */ const epochMillisecondsLongToMs = (data, index) => 4294967296 * (data[index + 1]) + (data[index] >>> 0);
+/** @ignore */ const epochMicrosecondsLongToMs = (data, index) => 4294967296 * (data[index + 1] / 1000) + ((data[index] >>> 0) / 1000);
+/** @ignore */ const epochNanosecondsLongToMs = (data, index) => 4294967296 * (data[index + 1] / 1000000) + ((data[index] >>> 0) / 1000000);
+/** @ignore */ const epochMillisecondsToDate = (epochMs) => new Date(epochMs);
+/** @ignore */ const epochDaysToDate = (data, index) => epochMillisecondsToDate(epochDaysToMs(data, index));
+/** @ignore */ const epochMillisecondsLongToDate = (data, index) => epochMillisecondsToDate(epochMillisecondsLongToMs(data, index));
+/** @ignore */
+const getNull = (_data, _index) => null;
+/** @ignore */
+const getVariableWidthBytes = (values, valueOffsets, index) => {
+    if (index + 1 >= valueOffsets.length) {
+        return null;
+    }
+    const x = valueOffsets[index];
+    const y = valueOffsets[index + 1];
+    return values.subarray(x, y);
+};
+/** @ignore */
+const getBool = ({ offset, values }, index) => {
+    const idx = offset + index;
+    const byte = values[idx >> 3];
+    return (byte & 1 << (idx % 8)) !== 0;
+};
+/** @ignore */
+const getDateDay = ({ values }, index) => epochDaysToDate(values, index);
+/** @ignore */
+const getDateMillisecond = ({ values }, index) => epochMillisecondsLongToDate(values, index * 2);
+/** @ignore */
+const getNumeric = ({ stride, values }, index) => values[stride * index];
+/** @ignore */
+const getFloat16 = ({ stride, values }, index) => uint16ToFloat64(values[stride * index]);
+/** @ignore */
+const getBigInts = ({ values }, index) => values[index];
+/** @ignore */
+const getFixedSizeBinary = ({ stride, values }, index) => values.subarray(stride * index, stride * (index + 1));
+/** @ignore */
+const getBinary = ({ values, valueOffsets }, index) => getVariableWidthBytes(values, valueOffsets, index);
+/** @ignore */
+const getUtf8 = ({ values, valueOffsets }, index) => {
+    const bytes = getVariableWidthBytes(values, valueOffsets, index);
+    return bytes !== null ? decodeUtf8(bytes) : null;
+};
+/* istanbul ignore next */
+/** @ignore */
+const getInt = ({ values }, index) => values[index];
+/* istanbul ignore next */
+/** @ignore */
+const getFloat = ({ type, values }, index) => (type.precision !== Precision.HALF ? values[index] : uint16ToFloat64(values[index]));
+/* istanbul ignore next */
+/** @ignore */
+const getDate = (data, index) => (data.type.unit === DateUnit.DAY
+    ? getDateDay(data, index)
+    : getDateMillisecond(data, index));
+/** @ignore */
+const getTimestampSecond = ({ values }, index) => 1000 * epochMillisecondsLongToMs(values, index * 2);
+/** @ignore */
+const getTimestampMillisecond = ({ values }, index) => epochMillisecondsLongToMs(values, index * 2);
+/** @ignore */
+const getTimestampMicrosecond = ({ values }, index) => epochMicrosecondsLongToMs(values, index * 2);
+/** @ignore */
+const getTimestampNanosecond = ({ values }, index) => epochNanosecondsLongToMs(values, index * 2);
+/* istanbul ignore next */
+/** @ignore */
+const getTimestamp = (data, index) => {
+    switch (data.type.unit) {
+        case TimeUnit.SECOND: return getTimestampSecond(data, index);
+        case TimeUnit.MILLISECOND: return getTimestampMillisecond(data, index);
+        case TimeUnit.MICROSECOND: return getTimestampMicrosecond(data, index);
+        case TimeUnit.NANOSECOND: return getTimestampNanosecond(data, index);
+    }
+};
+/** @ignore */
+const getTimeSecond = ({ values }, index) => values[index];
+/** @ignore */
+const getTimeMillisecond = ({ values }, index) => values[index];
+/** @ignore */
+const getTimeMicrosecond = ({ values }, index) => values[index];
+/** @ignore */
+const getTimeNanosecond = ({ values }, index) => values[index];
+/* istanbul ignore next */
+/** @ignore */
+const getTime = (data, index) => {
+    switch (data.type.unit) {
+        case TimeUnit.SECOND: return getTimeSecond(data, index);
+        case TimeUnit.MILLISECOND: return getTimeMillisecond(data, index);
+        case TimeUnit.MICROSECOND: return getTimeMicrosecond(data, index);
+        case TimeUnit.NANOSECOND: return getTimeNanosecond(data, index);
+    }
+};
+/** @ignore */
+const getDecimal = ({ values, stride }, index) => BN.decimal(values.subarray(stride * index, stride * (index + 1)));
+/** @ignore */
+const getList = (data, index) => {
+    const { valueOffsets, stride, children } = data;
+    const { [index * stride]: begin, [index * stride + 1]: end } = valueOffsets;
+    const child = children[0];
+    const slice = child.slice(begin, end - begin);
+    return new Vector([slice]);
+};
+/** @ignore */
+const getMap = (data, index) => {
+    const { valueOffsets, children } = data;
+    const { [index]: begin, [index + 1]: end } = valueOffsets;
+    const child = children[0];
+    return new MapRow(child.slice(begin, end - begin));
+};
+/** @ignore */
+const getStruct = (data, index) => {
+    return new StructRow(data, index);
+};
+/* istanbul ignore next */
+/** @ignore */
+const getUnion = (data, index) => {
+    return data.type.mode === UnionMode.Dense ?
+        getDenseUnion(data, index) :
+        getSparseUnion(data, index);
+};
+/** @ignore */
+const getDenseUnion = (data, index) => {
+    const childIndex = data.type.typeIdToChildIndex[data.typeIds[index]];
+    const child = data.children[childIndex];
+    return instance.visit(child, data.valueOffsets[index]);
+};
+/** @ignore */
+const getSparseUnion = (data, index) => {
+    const childIndex = data.type.typeIdToChildIndex[data.typeIds[index]];
+    const child = data.children[childIndex];
+    return instance.visit(child, index);
+};
+/** @ignore */
+const getDictionary = (data, index) => {
+    var _a;
+    return (_a = data.dictionary) === null || _a === void 0 ? void 0 : _a.get(data.values[index]);
+};
+/* istanbul ignore next */
+/** @ignore */
+const getInterval = (data, index) => (data.type.unit === IntervalUnit.DAY_TIME)
+    ? getIntervalDayTime(data, index)
+    : getIntervalYearMonth(data, index);
+/** @ignore */
+const getIntervalDayTime = ({ values }, index) => values.subarray(2 * index, 2 * (index + 1));
+/** @ignore */
+const getIntervalYearMonth = ({ values }, index) => {
+    const interval = values[index];
+    const int32s = new Int32Array(2);
+    int32s[0] = Math.trunc(interval / 12); /* years */
+    int32s[1] = Math.trunc(interval % 12); /* months */
+    return int32s;
+};
+/** @ignore */
+const getFixedSizeList = (data, index) => {
+    const { stride, children } = data;
+    const child = children[0];
+    const slice = child.slice(index * stride, stride);
+    return new Vector([slice]);
+};
+GetVisitor.prototype.visitNull = wrapGet(getNull);
+GetVisitor.prototype.visitBool = wrapGet(getBool);
+GetVisitor.prototype.visitInt = wrapGet(getInt);
+GetVisitor.prototype.visitInt8 = wrapGet(getNumeric);
+GetVisitor.prototype.visitInt16 = wrapGet(getNumeric);
+GetVisitor.prototype.visitInt32 = wrapGet(getNumeric);
+GetVisitor.prototype.visitInt64 = wrapGet(getBigInts);
+GetVisitor.prototype.visitUint8 = wrapGet(getNumeric);
+GetVisitor.prototype.visitUint16 = wrapGet(getNumeric);
+GetVisitor.prototype.visitUint32 = wrapGet(getNumeric);
+GetVisitor.prototype.visitUint64 = wrapGet(getBigInts);
+GetVisitor.prototype.visitFloat = wrapGet(getFloat);
+GetVisitor.prototype.visitFloat16 = wrapGet(getFloat16);
+GetVisitor.prototype.visitFloat32 = wrapGet(getNumeric);
+GetVisitor.prototype.visitFloat64 = wrapGet(getNumeric);
+GetVisitor.prototype.visitUtf8 = wrapGet(getUtf8);
+GetVisitor.prototype.visitBinary = wrapGet(getBinary);
+GetVisitor.prototype.visitFixedSizeBinary = wrapGet(getFixedSizeBinary);
+GetVisitor.prototype.visitDate = wrapGet(getDate);
+GetVisitor.prototype.visitDateDay = wrapGet(getDateDay);
+GetVisitor.prototype.visitDateMillisecond = wrapGet(getDateMillisecond);
+GetVisitor.prototype.visitTimestamp = wrapGet(getTimestamp);
+GetVisitor.prototype.visitTimestampSecond = wrapGet(getTimestampSecond);
+GetVisitor.prototype.visitTimestampMillisecond = wrapGet(getTimestampMillisecond);
+GetVisitor.prototype.visitTimestampMicrosecond = wrapGet(getTimestampMicrosecond);
+GetVisitor.prototype.visitTimestampNanosecond = wrapGet(getTimestampNanosecond);
+GetVisitor.prototype.visitTime = wrapGet(getTime);
+GetVisitor.prototype.visitTimeSecond = wrapGet(getTimeSecond);
+GetVisitor.prototype.visitTimeMillisecond = wrapGet(getTimeMillisecond);
+GetVisitor.prototype.visitTimeMicrosecond = wrapGet(getTimeMicrosecond);
+GetVisitor.prototype.visitTimeNanosecond = wrapGet(getTimeNanosecond);
+GetVisitor.prototype.visitDecimal = wrapGet(getDecimal);
+GetVisitor.prototype.visitList = wrapGet(getList);
+GetVisitor.prototype.visitStruct = wrapGet(getStruct);
+GetVisitor.prototype.visitUnion = wrapGet(getUnion);
+GetVisitor.prototype.visitDenseUnion = wrapGet(getDenseUnion);
+GetVisitor.prototype.visitSparseUnion = wrapGet(getSparseUnion);
+GetVisitor.prototype.visitDictionary = wrapGet(getDictionary);
+GetVisitor.prototype.visitInterval = wrapGet(getInterval);
+GetVisitor.prototype.visitIntervalDayTime = wrapGet(getIntervalDayTime);
+GetVisitor.prototype.visitIntervalYearMonth = wrapGet(getIntervalYearMonth);
+GetVisitor.prototype.visitFixedSizeList = wrapGet(getFixedSizeList);
+GetVisitor.prototype.visitMap = wrapGet(getMap);
+/** @ignore */
+export const instance = new GetVisitor();
+
+//# sourceMappingURL=get.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/get.mjs.map b/igv_component/node_modules/apache-arrow/visitor/get.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..17b9076f6d3d8611d6a742e8f2611193bdb9458e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/get.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/indexof.d.ts b/igv_component/node_modules/apache-arrow/visitor/indexof.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..91dd702ad875af4990df9182128b9563b7326920
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/indexof.d.ts
@@ -0,0 +1,60 @@
+import { Data } from '../data.js';
+import { Type } from '../enum.js';
+import { Visitor } from '../visitor.js';
+import { TypeToDataType } from '../interfaces.js';
+import { DataType, Dictionary, Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct, Float, Float16, Float32, Float64, Int, Uint8, Uint16, Uint32, Uint64, Int8, Int16, Int32, Int64, Date_, DateDay, DateMillisecond, Interval, IntervalDayTime, IntervalYearMonth, Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond, Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond, Union, DenseUnion, SparseUnion } from '../type.js';
+/** @ignore */
+export interface IndexOfVisitor extends Visitor {
+    visit<T extends Data>(node: T, value: T['TValue'] | null, index?: number): number;
+    visitMany<T extends Data>(nodes: T[], values: (T['TValue'] | null)[], indices: (number | undefined)[]): number[];
+    getVisitFn<T extends DataType>(node: Data<T> | T): (data: Data<T>, value: T['TValue'] | null, index?: number) => number;
+    getVisitFn<T extends Type>(node: T): (data: Data<TypeToDataType<T>>, value: TypeToDataType<T>['TValue'] | null, index?: number) => number;
+    visitNull<T extends Null>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitBool<T extends Bool>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitInt<T extends Int>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitInt8<T extends Int8>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitInt16<T extends Int16>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitInt32<T extends Int32>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitInt64<T extends Int64>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitUint8<T extends Uint8>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitUint16<T extends Uint16>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitUint32<T extends Uint32>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitUint64<T extends Uint64>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitFloat<T extends Float>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitFloat16<T extends Float16>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitFloat32<T extends Float32>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitFloat64<T extends Float64>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitUtf8<T extends Utf8>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitBinary<T extends Binary>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitFixedSizeBinary<T extends FixedSizeBinary>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitDate<T extends Date_>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitDateDay<T extends DateDay>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitDateMillisecond<T extends DateMillisecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimestamp<T extends Timestamp>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimestampSecond<T extends TimestampSecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimestampMillisecond<T extends TimestampMillisecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimestampMicrosecond<T extends TimestampMicrosecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimestampNanosecond<T extends TimestampNanosecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTime<T extends Time>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimeSecond<T extends TimeSecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimeMillisecond<T extends TimeMillisecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimeMicrosecond<T extends TimeMicrosecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitTimeNanosecond<T extends TimeNanosecond>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitDecimal<T extends Decimal>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitList<T extends List>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitStruct<T extends Struct>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitUnion<T extends Union>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitDenseUnion<T extends DenseUnion>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitSparseUnion<T extends SparseUnion>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitDictionary<T extends Dictionary>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitInterval<T extends Interval>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitIntervalDayTime<T extends IntervalDayTime>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitIntervalYearMonth<T extends IntervalYearMonth>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitFixedSizeList<T extends FixedSizeList>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+    visitMap<T extends Map_>(data: Data<T>, value: T['TValue'] | null, index?: number): number;
+}
+/** @ignore */
+export declare class IndexOfVisitor extends Visitor {
+}
+/** @ignore */
+export declare const instance: IndexOfVisitor;
diff --git a/igv_component/node_modules/apache-arrow/visitor/indexof.d.ts.map b/igv_component/node_modules/apache-arrow/visitor/indexof.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..d3c296a70e7758b29d3e8d6f6204e4fcfa5c6ee6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/indexof.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/indexof.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,IAAI,EAAE,MAAM,YAAY,CAAC;AAClC,OAAO,EAAE,IAAI,EAAE,MAAM,YAAY,CAAC;AAClC,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AAExC,OAAO,EAAE,cAAc,EAAE,MAAM,kBAAkB,CAAC;AAGlD,OAAO,EACH,QAAQ,EAAE,UAAU,EACpB,IAAI,EAAE,IAAI,EAAE,IAAI,EAAE,MAAM,EAAE,OAAO,EAAE,eAAe,EAAE,IAAI,EAAE,aAAa,EAAE,IAAI,EAAE,MAAM,EACrF,KAAK,EAAE,OAAO,EAAE,OAAO,EAAE,OAAO,EAChC,GAAG,EAAE,KAAK,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,IAAI,EAAE,KAAK,EAAE,KAAK,EAAE,KAAK,EAC7D,KAAK,EAAE,OAAO,EAAE,eAAe,EAC/B,QAAQ,EAAE,eAAe,EAAE,iBAAiB,EAC5C,IAAI,EAAE,UAAU,EAAE,eAAe,EAAE,eAAe,EAAE,cAAc,EAClE,SAAS,EAAE,eAAe,EAAE,oBAAoB,EAAE,oBAAoB,EAAE,mBAAmB,EAC3F,KAAK,EAAE,UAAU,EAAE,WAAW,EACjC,MAAM,YAAY,CAAC;AAEpB,cAAc;AACd,MAAM,WAAW,cAAe,SAAQ,OAAO;IAC3C,KAAK,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAClF,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,KAAK,EAAE,CAAC,EAAE,EAAE,MAAM,EAAE,CAAC,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC,EAAE,EAAE,OAAO,EAAE,CAAC,MAAM,GAAG,SAAS,CAAC,EAAE,GAAG,MAAM,EAAE,CAAC;IACjH,UAAU,CAAC,CAAC,SAAS,QAAQ,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG,CAAC,GAAG,CAAC,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,KAAK,MAAM,CAAC;IACxH,UAAU,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,CAAC,GAAG,CAAC,IAAI,EAAE,IAAI,CAAC,cAAc,CAAC,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,cAAc,CAAC,CAAC,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,KAAK,MAAM,CAAC;IAC1I,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAC5F,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAC5F,QAAQ,CAAC,CAAC,SAAS,GAAG,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAC1F,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAC5F,UAAU,CAAC,CAAC,SAAS,KAAK,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAC9F,UAAU,CAAC,CAAC,SAAS,KAAK,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAC9F,UAAU,CAAC,CAAC,SAAS,KAAK,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAC9F,UAAU,CAAC,CAAC,SAAS,KAAK,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAC9F,WAAW,CAAC,CAAC,SAAS,MAAM,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAChG,WAAW,CAAC,CAAC,SAAS,MAAM,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAChG,WAAW,CAAC,CAAC,SAAS,MAAM,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAChG,UAAU,CAAC,CAAC,SAAS,KAAK,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAC9F,YAAY,CAAC,CAAC,SAAS,OAAO,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAClG,YAAY,CAAC,CAAC,SAAS,OAAO,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAClG,YAAY,CAAC,CAAC,SAAS,OAAO,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAClG,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAC5F,WAAW,CAAC,CAAC,SAAS,MAAM,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAChG,oBAAoB,CAAC,CAAC,SAAS,eAAe,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAClH,SAAS,CAAC,CAAC,SAAS,KAAK,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAC7F,YAAY,CAAC,CAAC,SAAS,OAAO,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAClG,oBAAoB,CAAC,CAAC,SAAS,eAAe,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAClH,cAAc,CAAC,CAAC,SAAS,SAAS,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IACtG,oBAAoB,CAAC,CAAC,SAAS,eAAe,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,EAAE,KAAK,CAAC,EAAE,MAAM,GAAG,MAAM,CAAC;IAClH,yBAAyB,CAAC,CAAC,SAAS,oBAA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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/indexof.js b/igv_component/node_modules/apache-arrow/visitor/indexof.js
new file mode 100644
index 0000000000000000000000000000000000000000..4c89bbe93035bc63a51090095e03bc4ffc539462
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/indexof.js
@@ -0,0 +1,126 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.instance = exports.IndexOfVisitor = void 0;
+const visitor_js_1 = require("../visitor.js");
+const get_js_1 = require("./get.js");
+const bit_js_1 = require("../util/bit.js");
+const vector_js_1 = require("../util/vector.js");
+/** @ignore */
+class IndexOfVisitor extends visitor_js_1.Visitor {
+}
+exports.IndexOfVisitor = IndexOfVisitor;
+/** @ignore */
+function nullIndexOf(data, searchElement) {
+    // if you're looking for nulls and the vector isn't empty, we've got 'em!
+    return searchElement === null && data.length > 0 ? 0 : -1;
+}
+/** @ignore */
+function indexOfNull(data, fromIndex) {
+    const { nullBitmap } = data;
+    if (!nullBitmap || data.nullCount <= 0) {
+        return -1;
+    }
+    let i = 0;
+    for (const isValid of new bit_js_1.BitIterator(nullBitmap, data.offset + (fromIndex || 0), data.length, nullBitmap, bit_js_1.getBool)) {
+        if (!isValid) {
+            return i;
+        }
+        ++i;
+    }
+    return -1;
+}
+/** @ignore */
+function indexOfValue(data, searchElement, fromIndex) {
+    if (searchElement === undefined) {
+        return -1;
+    }
+    if (searchElement === null) {
+        return indexOfNull(data, fromIndex);
+    }
+    const get = get_js_1.instance.getVisitFn(data);
+    const compare = (0, vector_js_1.createElementComparator)(searchElement);
+    for (let i = (fromIndex || 0) - 1, n = data.length; ++i < n;) {
+        if (compare(get(data, i))) {
+            return i;
+        }
+    }
+    return -1;
+}
+/** @ignore */
+function indexOfUnion(data, searchElement, fromIndex) {
+    // Unions are special -- they do have a nullBitmap, but so can their children.
+    // If the searchElement is null, we don't know whether it came from the Union's
+    // bitmap or one of its childrens'. So we don't interrogate the Union's bitmap,
+    // since that will report the wrong index if a child has a null before the Union.
+    const get = get_js_1.instance.getVisitFn(data);
+    const compare = (0, vector_js_1.createElementComparator)(searchElement);
+    for (let i = (fromIndex || 0) - 1, n = data.length; ++i < n;) {
+        if (compare(get(data, i))) {
+            return i;
+        }
+    }
+    return -1;
+}
+IndexOfVisitor.prototype.visitNull = nullIndexOf;
+IndexOfVisitor.prototype.visitBool = indexOfValue;
+IndexOfVisitor.prototype.visitInt = indexOfValue;
+IndexOfVisitor.prototype.visitInt8 = indexOfValue;
+IndexOfVisitor.prototype.visitInt16 = indexOfValue;
+IndexOfVisitor.prototype.visitInt32 = indexOfValue;
+IndexOfVisitor.prototype.visitInt64 = indexOfValue;
+IndexOfVisitor.prototype.visitUint8 = indexOfValue;
+IndexOfVisitor.prototype.visitUint16 = indexOfValue;
+IndexOfVisitor.prototype.visitUint32 = indexOfValue;
+IndexOfVisitor.prototype.visitUint64 = indexOfValue;
+IndexOfVisitor.prototype.visitFloat = indexOfValue;
+IndexOfVisitor.prototype.visitFloat16 = indexOfValue;
+IndexOfVisitor.prototype.visitFloat32 = indexOfValue;
+IndexOfVisitor.prototype.visitFloat64 = indexOfValue;
+IndexOfVisitor.prototype.visitUtf8 = indexOfValue;
+IndexOfVisitor.prototype.visitBinary = indexOfValue;
+IndexOfVisitor.prototype.visitFixedSizeBinary = indexOfValue;
+IndexOfVisitor.prototype.visitDate = indexOfValue;
+IndexOfVisitor.prototype.visitDateDay = indexOfValue;
+IndexOfVisitor.prototype.visitDateMillisecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimestamp = indexOfValue;
+IndexOfVisitor.prototype.visitTimestampSecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimestampMillisecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimestampMicrosecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimestampNanosecond = indexOfValue;
+IndexOfVisitor.prototype.visitTime = indexOfValue;
+IndexOfVisitor.prototype.visitTimeSecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimeMillisecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimeMicrosecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimeNanosecond = indexOfValue;
+IndexOfVisitor.prototype.visitDecimal = indexOfValue;
+IndexOfVisitor.prototype.visitList = indexOfValue;
+IndexOfVisitor.prototype.visitStruct = indexOfValue;
+IndexOfVisitor.prototype.visitUnion = indexOfValue;
+IndexOfVisitor.prototype.visitDenseUnion = indexOfUnion;
+IndexOfVisitor.prototype.visitSparseUnion = indexOfUnion;
+IndexOfVisitor.prototype.visitDictionary = indexOfValue;
+IndexOfVisitor.prototype.visitInterval = indexOfValue;
+IndexOfVisitor.prototype.visitIntervalDayTime = indexOfValue;
+IndexOfVisitor.prototype.visitIntervalYearMonth = indexOfValue;
+IndexOfVisitor.prototype.visitFixedSizeList = indexOfValue;
+IndexOfVisitor.prototype.visitMap = indexOfValue;
+/** @ignore */
+exports.instance = new IndexOfVisitor();
+
+//# sourceMappingURL=indexof.js.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/indexof.js.map b/igv_component/node_modules/apache-arrow/visitor/indexof.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..0b5a54bc59546708401d0158bfa46e1361713950
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/indexof.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/indexof.mjs b/igv_component/node_modules/apache-arrow/visitor/indexof.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..7623ee9cf10b65101b0218bb4624e1be711cbd35
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/indexof.mjs
@@ -0,0 +1,122 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Visitor } from '../visitor.mjs';
+import { instance as getVisitor } from './get.mjs';
+import { getBool, BitIterator } from '../util/bit.mjs';
+import { createElementComparator } from '../util/vector.mjs';
+/** @ignore */
+export class IndexOfVisitor extends Visitor {
+}
+/** @ignore */
+function nullIndexOf(data, searchElement) {
+    // if you're looking for nulls and the vector isn't empty, we've got 'em!
+    return searchElement === null && data.length > 0 ? 0 : -1;
+}
+/** @ignore */
+function indexOfNull(data, fromIndex) {
+    const { nullBitmap } = data;
+    if (!nullBitmap || data.nullCount <= 0) {
+        return -1;
+    }
+    let i = 0;
+    for (const isValid of new BitIterator(nullBitmap, data.offset + (fromIndex || 0), data.length, nullBitmap, getBool)) {
+        if (!isValid) {
+            return i;
+        }
+        ++i;
+    }
+    return -1;
+}
+/** @ignore */
+function indexOfValue(data, searchElement, fromIndex) {
+    if (searchElement === undefined) {
+        return -1;
+    }
+    if (searchElement === null) {
+        return indexOfNull(data, fromIndex);
+    }
+    const get = getVisitor.getVisitFn(data);
+    const compare = createElementComparator(searchElement);
+    for (let i = (fromIndex || 0) - 1, n = data.length; ++i < n;) {
+        if (compare(get(data, i))) {
+            return i;
+        }
+    }
+    return -1;
+}
+/** @ignore */
+function indexOfUnion(data, searchElement, fromIndex) {
+    // Unions are special -- they do have a nullBitmap, but so can their children.
+    // If the searchElement is null, we don't know whether it came from the Union's
+    // bitmap or one of its childrens'. So we don't interrogate the Union's bitmap,
+    // since that will report the wrong index if a child has a null before the Union.
+    const get = getVisitor.getVisitFn(data);
+    const compare = createElementComparator(searchElement);
+    for (let i = (fromIndex || 0) - 1, n = data.length; ++i < n;) {
+        if (compare(get(data, i))) {
+            return i;
+        }
+    }
+    return -1;
+}
+IndexOfVisitor.prototype.visitNull = nullIndexOf;
+IndexOfVisitor.prototype.visitBool = indexOfValue;
+IndexOfVisitor.prototype.visitInt = indexOfValue;
+IndexOfVisitor.prototype.visitInt8 = indexOfValue;
+IndexOfVisitor.prototype.visitInt16 = indexOfValue;
+IndexOfVisitor.prototype.visitInt32 = indexOfValue;
+IndexOfVisitor.prototype.visitInt64 = indexOfValue;
+IndexOfVisitor.prototype.visitUint8 = indexOfValue;
+IndexOfVisitor.prototype.visitUint16 = indexOfValue;
+IndexOfVisitor.prototype.visitUint32 = indexOfValue;
+IndexOfVisitor.prototype.visitUint64 = indexOfValue;
+IndexOfVisitor.prototype.visitFloat = indexOfValue;
+IndexOfVisitor.prototype.visitFloat16 = indexOfValue;
+IndexOfVisitor.prototype.visitFloat32 = indexOfValue;
+IndexOfVisitor.prototype.visitFloat64 = indexOfValue;
+IndexOfVisitor.prototype.visitUtf8 = indexOfValue;
+IndexOfVisitor.prototype.visitBinary = indexOfValue;
+IndexOfVisitor.prototype.visitFixedSizeBinary = indexOfValue;
+IndexOfVisitor.prototype.visitDate = indexOfValue;
+IndexOfVisitor.prototype.visitDateDay = indexOfValue;
+IndexOfVisitor.prototype.visitDateMillisecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimestamp = indexOfValue;
+IndexOfVisitor.prototype.visitTimestampSecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimestampMillisecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimestampMicrosecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimestampNanosecond = indexOfValue;
+IndexOfVisitor.prototype.visitTime = indexOfValue;
+IndexOfVisitor.prototype.visitTimeSecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimeMillisecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimeMicrosecond = indexOfValue;
+IndexOfVisitor.prototype.visitTimeNanosecond = indexOfValue;
+IndexOfVisitor.prototype.visitDecimal = indexOfValue;
+IndexOfVisitor.prototype.visitList = indexOfValue;
+IndexOfVisitor.prototype.visitStruct = indexOfValue;
+IndexOfVisitor.prototype.visitUnion = indexOfValue;
+IndexOfVisitor.prototype.visitDenseUnion = indexOfUnion;
+IndexOfVisitor.prototype.visitSparseUnion = indexOfUnion;
+IndexOfVisitor.prototype.visitDictionary = indexOfValue;
+IndexOfVisitor.prototype.visitInterval = indexOfValue;
+IndexOfVisitor.prototype.visitIntervalDayTime = indexOfValue;
+IndexOfVisitor.prototype.visitIntervalYearMonth = indexOfValue;
+IndexOfVisitor.prototype.visitFixedSizeList = indexOfValue;
+IndexOfVisitor.prototype.visitMap = indexOfValue;
+/** @ignore */
+export const instance = new IndexOfVisitor();
+
+//# sourceMappingURL=indexof.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/indexof.mjs.map b/igv_component/node_modules/apache-arrow/visitor/indexof.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..c9e1f35482f0ee32bdd82f2de4c6c1058a529928
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/indexof.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/iterator.d.ts b/igv_component/node_modules/apache-arrow/visitor/iterator.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..c0c9b7484a98a1a80ee9642919de1fa820496069
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/iterator.d.ts
@@ -0,0 +1,60 @@
+import { Vector } from '../vector.js';
+import { Visitor } from '../visitor.js';
+import { Type } from '../enum.js';
+import { TypeToDataType } from '../interfaces.js';
+import { DataType, Dictionary, Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct, Float, Float16, Float32, Float64, Int, Uint8, Uint16, Uint32, Uint64, Int8, Int16, Int32, Int64, Date_, DateDay, DateMillisecond, Interval, IntervalDayTime, IntervalYearMonth, Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond, Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond, Union, DenseUnion, SparseUnion } from '../type.js';
+/** @ignore */
+export interface IteratorVisitor extends Visitor {
+    visit<T extends Vector>(node: T): IterableIterator<T['TValue'] | null>;
+    visitMany<T extends Vector>(nodes: T[]): IterableIterator<T['TValue'] | null>[];
+    getVisitFn<T extends DataType>(node: Vector<T> | T): (vector: Vector<T>) => IterableIterator<T['TValue'] | null>;
+    getVisitFn<T extends Type>(node: T): (vector: Vector<TypeToDataType<T>>) => IterableIterator<TypeToDataType<T>['TValue'] | null>;
+    visitNull<T extends Null>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitBool<T extends Bool>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitInt<T extends Int>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitInt8<T extends Int8>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitInt16<T extends Int16>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitInt32<T extends Int32>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitInt64<T extends Int64>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitUint8<T extends Uint8>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitUint16<T extends Uint16>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitUint32<T extends Uint32>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitUint64<T extends Uint64>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitFloat<T extends Float>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitFloat16<T extends Float16>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitFloat32<T extends Float32>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitFloat64<T extends Float64>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitUtf8<T extends Utf8>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitBinary<T extends Binary>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitFixedSizeBinary<T extends FixedSizeBinary>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitDate<T extends Date_>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitDateDay<T extends DateDay>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitDateMillisecond<T extends DateMillisecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimestamp<T extends Timestamp>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimestampSecond<T extends TimestampSecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimestampMillisecond<T extends TimestampMillisecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimestampMicrosecond<T extends TimestampMicrosecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimestampNanosecond<T extends TimestampNanosecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTime<T extends Time>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimeSecond<T extends TimeSecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimeMillisecond<T extends TimeMillisecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimeMicrosecond<T extends TimeMicrosecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitTimeNanosecond<T extends TimeNanosecond>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitDecimal<T extends Decimal>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitList<T extends List>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitStruct<T extends Struct>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitUnion<T extends Union>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitDenseUnion<T extends DenseUnion>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitSparseUnion<T extends SparseUnion>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitDictionary<T extends Dictionary>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitInterval<T extends Interval>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitIntervalDayTime<T extends IntervalDayTime>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitIntervalYearMonth<T extends IntervalYearMonth>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitFixedSizeList<T extends FixedSizeList>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+    visitMap<T extends Map_>(vector: Vector<T>): IterableIterator<T['TValue'] | null>;
+}
+/** @ignore */
+export declare class IteratorVisitor extends Visitor {
+}
+/** @ignore */
+export declare const instance: IteratorVisitor;
diff --git a/igv_component/node_modules/apache-arrow/visitor/iterator.d.ts.map b/igv_component/node_modules/apache-arrow/visitor/iterator.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..f9a68a06d5907da87a82d7fe6f3a0ab714a67bb4
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/iterator.d.ts.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/iterator.js b/igv_component/node_modules/apache-arrow/visitor/iterator.js
new file mode 100644
index 0000000000000000000000000000000000000000..8fc4457c654be380d3b48abeb539e25efcc8b399
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/iterator.js
@@ -0,0 +1,115 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.instance = exports.IteratorVisitor = void 0;
+const visitor_js_1 = require("../visitor.js");
+const enum_js_1 = require("../enum.js");
+const type_js_1 = require("../type.js");
+const chunk_js_1 = require("../util/chunk.js");
+/** @ignore */
+class IteratorVisitor extends visitor_js_1.Visitor {
+}
+exports.IteratorVisitor = IteratorVisitor;
+/** @ignore */
+function vectorIterator(vector) {
+    const { type } = vector;
+    // Fast case, defer to native iterators if possible
+    if (vector.nullCount === 0 && vector.stride === 1 && ((type.typeId === enum_js_1.Type.Timestamp) ||
+        (type instanceof type_js_1.Int && type.bitWidth !== 64) ||
+        (type instanceof type_js_1.Time && type.bitWidth !== 64) ||
+        (type instanceof type_js_1.Float && type.precision !== enum_js_1.Precision.HALF))) {
+        return new chunk_js_1.ChunkedIterator(vector.data.length, (chunkIndex) => {
+            const data = vector.data[chunkIndex];
+            return data.values.subarray(0, data.length)[Symbol.iterator]();
+        });
+    }
+    // Otherwise, iterate manually
+    let offset = 0;
+    return new chunk_js_1.ChunkedIterator(vector.data.length, (chunkIndex) => {
+        const data = vector.data[chunkIndex];
+        const length = data.length;
+        const inner = vector.slice(offset, offset + length);
+        offset += length;
+        return new VectorIterator(inner);
+    });
+}
+/** @ignore */
+class VectorIterator {
+    constructor(vector) {
+        this.vector = vector;
+        this.index = 0;
+    }
+    next() {
+        if (this.index < this.vector.length) {
+            return {
+                value: this.vector.get(this.index++)
+            };
+        }
+        return { done: true, value: null };
+    }
+    [Symbol.iterator]() {
+        return this;
+    }
+}
+IteratorVisitor.prototype.visitNull = vectorIterator;
+IteratorVisitor.prototype.visitBool = vectorIterator;
+IteratorVisitor.prototype.visitInt = vectorIterator;
+IteratorVisitor.prototype.visitInt8 = vectorIterator;
+IteratorVisitor.prototype.visitInt16 = vectorIterator;
+IteratorVisitor.prototype.visitInt32 = vectorIterator;
+IteratorVisitor.prototype.visitInt64 = vectorIterator;
+IteratorVisitor.prototype.visitUint8 = vectorIterator;
+IteratorVisitor.prototype.visitUint16 = vectorIterator;
+IteratorVisitor.prototype.visitUint32 = vectorIterator;
+IteratorVisitor.prototype.visitUint64 = vectorIterator;
+IteratorVisitor.prototype.visitFloat = vectorIterator;
+IteratorVisitor.prototype.visitFloat16 = vectorIterator;
+IteratorVisitor.prototype.visitFloat32 = vectorIterator;
+IteratorVisitor.prototype.visitFloat64 = vectorIterator;
+IteratorVisitor.prototype.visitUtf8 = vectorIterator;
+IteratorVisitor.prototype.visitBinary = vectorIterator;
+IteratorVisitor.prototype.visitFixedSizeBinary = vectorIterator;
+IteratorVisitor.prototype.visitDate = vectorIterator;
+IteratorVisitor.prototype.visitDateDay = vectorIterator;
+IteratorVisitor.prototype.visitDateMillisecond = vectorIterator;
+IteratorVisitor.prototype.visitTimestamp = vectorIterator;
+IteratorVisitor.prototype.visitTimestampSecond = vectorIterator;
+IteratorVisitor.prototype.visitTimestampMillisecond = vectorIterator;
+IteratorVisitor.prototype.visitTimestampMicrosecond = vectorIterator;
+IteratorVisitor.prototype.visitTimestampNanosecond = vectorIterator;
+IteratorVisitor.prototype.visitTime = vectorIterator;
+IteratorVisitor.prototype.visitTimeSecond = vectorIterator;
+IteratorVisitor.prototype.visitTimeMillisecond = vectorIterator;
+IteratorVisitor.prototype.visitTimeMicrosecond = vectorIterator;
+IteratorVisitor.prototype.visitTimeNanosecond = vectorIterator;
+IteratorVisitor.prototype.visitDecimal = vectorIterator;
+IteratorVisitor.prototype.visitList = vectorIterator;
+IteratorVisitor.prototype.visitStruct = vectorIterator;
+IteratorVisitor.prototype.visitUnion = vectorIterator;
+IteratorVisitor.prototype.visitDenseUnion = vectorIterator;
+IteratorVisitor.prototype.visitSparseUnion = vectorIterator;
+IteratorVisitor.prototype.visitDictionary = vectorIterator;
+IteratorVisitor.prototype.visitInterval = vectorIterator;
+IteratorVisitor.prototype.visitIntervalDayTime = vectorIterator;
+IteratorVisitor.prototype.visitIntervalYearMonth = vectorIterator;
+IteratorVisitor.prototype.visitFixedSizeList = vectorIterator;
+IteratorVisitor.prototype.visitMap = vectorIterator;
+/** @ignore */
+exports.instance = new IteratorVisitor();
+
+//# sourceMappingURL=iterator.js.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/iterator.js.map b/igv_component/node_modules/apache-arrow/visitor/iterator.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..bafa4d5b9007422039d429907ccd7184db739abc
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/iterator.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/iterator.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAGrB,8CAAwC;AACxC,wCAA6C;AAE7C,wCAUoB;AACpB,+CAAmD;AAqDnD,cAAc;AACd,MAAa,eAAgB,SAAQ,oBAAO;CAAI;AAAhD,0CAAgD;AAEhD,cAAc;AACd,SAAS,cAAc,CAAqB,MAAiB;IAEzD,MAAM,EAAE,IAAI,EAAE,GAAG,MAAM,CAAC;IAExB,mDAAmD;IACnD,IAAI,MAAM,CAAC,SAAS,KAAK,CAAC,IAAI,MAAM,CAAC,MAAM,KAAK,CAAC,IAAI,CACjD,CAAC,IAAI,CAAC,MAAM,KAAK,cAAI,CAAC,SAAS,CAAC;QAChC,CAAC,IAAI,YAAY,aAAG,IAAK,IAAY,CAAC,QAAQ,KAAK,EAAE,CAAC;QACtD,CAAC,IAAI,YAAY,cAAI,IAAK,IAAa,CAAC,QAAQ,KAAK,EAAE,CAAC;QACxD,CAAC,IAAI,YAAY,eAAK,IAAK,IAAc,CAAC,SAAS,KAAK,mBAAS,CAAC,IAAI,CAAC,CAC1E,EAAE;QACC,OAAO,IAAI,0BAAe,CAAC,MAAM,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,UAAU,EAAE,EAAE;YAC1D,MAAM,IAAI,GAAG,MAAM,CAAC,IAAI,CAAC,UAAU,CAAC,CAAC;YACrC,OAAO,IAAI,CAAC,MAAM,CAAC,QAAQ,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,CAAC,CAAC,MAAM,CAAC,QAAQ,CAAC,EAAE,CAAC;QACnE,CAAC,CAAC,CAAC;KACN;IAED,8BAA8B;IAC9B,IAAI,MAAM,GAAG,CAAC,CAAC;IACf,OAAO,IAAI,0BAAe,CAAC,MAAM,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,UAAU,EAAE,EAAE;QAC1D,MAAM,IAAI,GAAG,MAAM,CAAC,IAAI,CAAC,UAAU,CAAC,CAAC;QACrC,MAAM,MAAM,GAAG,IAAI,CAAC,MAAM,CAAC;QAC3B,MAAM,KAAK,GAAG,MAAM,CAAC,KAAK,CAAC,MAAM,EAAE,MAAM,GAAG,MAAM,CAAC,CAAC;QACpD,MAAM,IAAI,MAAM,CAAC;QACjB,OAAO,IAAI,cAAc,CAAC,KAAK,CAAC,CAAC;IACrC,CAAC,CAAC,CAAC;AACP,CAAC;AAED,cAAc;AACd,MAAM,cAAc;IAGhB,YAAoB,MAAiB;QAAjB,WAAM,GAAN,MAAM,CAAW;QAF7B,UAAK,GAAG,CAAC,CAAC;IAEuB,CAAC;IAE1C,IAAI;QACA,IAAI,IAAI,CAAC,KAAK,GAAG,IAAI,CAAC,MAAM,CAAC,MAAM,EAAE;YACjC,OAAO;gBACH,KAAK,EAAE,IAAI,CAAC,MAAM,CAAC,GAAG,CAAC,IAAI,CAAC,KAAK,EAAE,CAAC;aACvC,CAAC;SACL;QAED,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,IAAI,EAAE,CAAC;IACvC,CAAC;IAED,CAAC,MAAM,CAAC,QAAQ,CAAC;QACb,OAAO,IAAI,CAAC;IAChB,CAAC;CACJ;AAED,eAAe,CAAC,SAAS,CAAC,SAAS,GAAG,cAAc,CAAC;AACrD,eAAe,CAAC,SAAS,CAAC,SAAS,GAAG,cAAc,CAAC;AACrD,eAAe,CAAC,SAAS,CAAC,QAAQ,GAAG,cAAc,CAAC;AACpD,eAAe,CAAC,SAAS,CAAC,SAAS,GAAG,cAAc,CAAC;AACrD,eAAe,CAAC,SAAS,CAAC,UAAU,GAAG,cAAc,CAAC;AACtD,eAAe,CAAC,SAAS,CAAC,UAAU,GAAG,cAAc,CAAC;AACtD,eAAe,CAAC,SAAS,CAAC,UAAU,GAAG,cAAc,CAAC;AACtD,eAAe,CAAC,SAAS,CAAC,UAAU,GAAG,cAAc,CAAC;AACtD,eAAe,CAAC,SAAS,CAAC,WAAW,GAAG,cAAc,CAAC;AACvD,eAAe,CAAC,SAAS,CAAC,WAAW,GAAG,cAAc,CAAC;AACvD,eAAe,CAAC,SAAS,CAAC,WAAW,GAAG,cAAc,CAAC;AACvD,eAAe,CAAC,SAAS,CAAC,UAAU,GAAG,cAAc,CAAC;AACtD,eAAe,CAAC,SAAS,CAAC,YAAY,GAAG,cAAc,CAAC;AACxD,eAAe,CAAC,SAAS,CAAC,YAAY,GAAG,cAAc,CAAC;AACxD,eAAe,CAAC,SAAS,CAAC,YAAY,GAAG,cAAc,CAAC;AACxD,eAAe,CAAC,SAAS,CAAC,SAAS,GAAG,cAAc,CAAC;AACrD,eAAe,CAAC,SAAS,CAAC,WAAW,GAAG,cAAc,CAAC;AACvD,eAAe,CAAC,SAAS,CAAC,oBAAoB,GAAG,cAAc,CAAC;AAChE,eAAe,CAAC,SAAS,CAAC,SAAS,GAAG,cAAc,CAAC;AACrD,eAAe,CAAC,SAAS,CAAC,YAAY,GAAG,cAAc,CAAC;AACxD,eAAe,CAAC,SAAS,CAAC,oBAAoB,GAAG,cAAc,CAAC;AAChE,eAAe,CAAC,SAAS,CAAC,cAAc,GAAG,cAAc,CAAC;AAC1D,eAAe,CAAC,SAAS,CAAC,oBAAoB,GAAG,cAAc,CAAC;AAChE,eAAe,CAAC,SAAS,CAAC,yBAAyB,GAAG,cAAc,CAAC;AACrE,eAAe,CAAC,SAAS,CAAC,yBAAyB,GAAG,cAAc,CAAC;AACrE,eAAe,CAAC,SAAS,CAAC,wBAAwB,GAAG,cAAc,CAAC;AACpE,eAAe,CAAC,SAAS,CAAC,SAAS,GAAG,cAAc,CAAC;AACrD,eAAe,CAAC,SAAS,CAAC,eAAe,GAAG,cAAc,CAAC;AAC3D,eAAe,CAAC,SAAS,CAAC,oBAAoB,GAAG,cAAc,CAAC;AAChE,eAAe,CAAC,SAAS,CAAC,oBAAoB,GAAG,cAAc,CAAC;AAChE,eAAe,CAAC,SAAS,CAAC,mBAAmB,GAAG,cAAc,CAAC;AAC/D,eAAe,CAAC,SAAS,CAAC,YAAY,GAAG,cAAc,CAAC;AACxD,eAAe,CAAC,SAAS,CAAC,SAAS,GAAG,cAAc,CAAC;AACrD,eAAe,CAAC,SAAS,CAAC,WAAW,GAAG,cAAc,CAAC;AACvD,eAAe,CAAC,SAAS,CAAC,UAAU,GAAG,cAAc,CAAC;AACtD,eAAe,CAAC,SAAS,CAAC,eAAe,GAAG,cAAc,CAAC;AAC3D,eAAe,CAAC,SAAS,CAAC,gBAAgB,GAAG,cAAc,CAAC;AAC5D,eAAe,CAAC,SAAS,CAAC,eAAe,GAAG,cAAc,CAAC;AAC3D,eAAe,CAAC,SAAS,CAAC,aAAa,GAAG,cAAc,CAAC;AACzD,eAAe,CAAC,SAAS,CAAC,oBAAoB,GAAG,cAAc,CAAC;AAChE,eAAe,CAAC,SAAS,CAAC,sBAAsB,GAAG,cAAc,CAAC;AAClE,eAAe,CAAC,SAAS,CAAC,kBAAkB,GAAG,cAAc,CAAC;AAC9D,eAAe,CAAC,SAAS,CAAC,QAAQ,GAAG,cAAc,CAAC;AAEpD,cAAc;AACD,QAAA,QAAQ,GAAG,IAAI,eAAe,EAAE,CAAC","file":"iterator.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/iterator.mjs b/igv_component/node_modules/apache-arrow/visitor/iterator.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..f72718d944e45ef7e59e813380eac7d26df26470
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/iterator.mjs
@@ -0,0 +1,111 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Visitor } from '../visitor.mjs';
+import { Type, Precision } from '../enum.mjs';
+import { Float, Int, Time, } from '../type.mjs';
+import { ChunkedIterator } from '../util/chunk.mjs';
+/** @ignore */
+export class IteratorVisitor extends Visitor {
+}
+/** @ignore */
+function vectorIterator(vector) {
+    const { type } = vector;
+    // Fast case, defer to native iterators if possible
+    if (vector.nullCount === 0 && vector.stride === 1 && ((type.typeId === Type.Timestamp) ||
+        (type instanceof Int && type.bitWidth !== 64) ||
+        (type instanceof Time && type.bitWidth !== 64) ||
+        (type instanceof Float && type.precision !== Precision.HALF))) {
+        return new ChunkedIterator(vector.data.length, (chunkIndex) => {
+            const data = vector.data[chunkIndex];
+            return data.values.subarray(0, data.length)[Symbol.iterator]();
+        });
+    }
+    // Otherwise, iterate manually
+    let offset = 0;
+    return new ChunkedIterator(vector.data.length, (chunkIndex) => {
+        const data = vector.data[chunkIndex];
+        const length = data.length;
+        const inner = vector.slice(offset, offset + length);
+        offset += length;
+        return new VectorIterator(inner);
+    });
+}
+/** @ignore */
+class VectorIterator {
+    constructor(vector) {
+        this.vector = vector;
+        this.index = 0;
+    }
+    next() {
+        if (this.index < this.vector.length) {
+            return {
+                value: this.vector.get(this.index++)
+            };
+        }
+        return { done: true, value: null };
+    }
+    [Symbol.iterator]() {
+        return this;
+    }
+}
+IteratorVisitor.prototype.visitNull = vectorIterator;
+IteratorVisitor.prototype.visitBool = vectorIterator;
+IteratorVisitor.prototype.visitInt = vectorIterator;
+IteratorVisitor.prototype.visitInt8 = vectorIterator;
+IteratorVisitor.prototype.visitInt16 = vectorIterator;
+IteratorVisitor.prototype.visitInt32 = vectorIterator;
+IteratorVisitor.prototype.visitInt64 = vectorIterator;
+IteratorVisitor.prototype.visitUint8 = vectorIterator;
+IteratorVisitor.prototype.visitUint16 = vectorIterator;
+IteratorVisitor.prototype.visitUint32 = vectorIterator;
+IteratorVisitor.prototype.visitUint64 = vectorIterator;
+IteratorVisitor.prototype.visitFloat = vectorIterator;
+IteratorVisitor.prototype.visitFloat16 = vectorIterator;
+IteratorVisitor.prototype.visitFloat32 = vectorIterator;
+IteratorVisitor.prototype.visitFloat64 = vectorIterator;
+IteratorVisitor.prototype.visitUtf8 = vectorIterator;
+IteratorVisitor.prototype.visitBinary = vectorIterator;
+IteratorVisitor.prototype.visitFixedSizeBinary = vectorIterator;
+IteratorVisitor.prototype.visitDate = vectorIterator;
+IteratorVisitor.prototype.visitDateDay = vectorIterator;
+IteratorVisitor.prototype.visitDateMillisecond = vectorIterator;
+IteratorVisitor.prototype.visitTimestamp = vectorIterator;
+IteratorVisitor.prototype.visitTimestampSecond = vectorIterator;
+IteratorVisitor.prototype.visitTimestampMillisecond = vectorIterator;
+IteratorVisitor.prototype.visitTimestampMicrosecond = vectorIterator;
+IteratorVisitor.prototype.visitTimestampNanosecond = vectorIterator;
+IteratorVisitor.prototype.visitTime = vectorIterator;
+IteratorVisitor.prototype.visitTimeSecond = vectorIterator;
+IteratorVisitor.prototype.visitTimeMillisecond = vectorIterator;
+IteratorVisitor.prototype.visitTimeMicrosecond = vectorIterator;
+IteratorVisitor.prototype.visitTimeNanosecond = vectorIterator;
+IteratorVisitor.prototype.visitDecimal = vectorIterator;
+IteratorVisitor.prototype.visitList = vectorIterator;
+IteratorVisitor.prototype.visitStruct = vectorIterator;
+IteratorVisitor.prototype.visitUnion = vectorIterator;
+IteratorVisitor.prototype.visitDenseUnion = vectorIterator;
+IteratorVisitor.prototype.visitSparseUnion = vectorIterator;
+IteratorVisitor.prototype.visitDictionary = vectorIterator;
+IteratorVisitor.prototype.visitInterval = vectorIterator;
+IteratorVisitor.prototype.visitIntervalDayTime = vectorIterator;
+IteratorVisitor.prototype.visitIntervalYearMonth = vectorIterator;
+IteratorVisitor.prototype.visitFixedSizeList = vectorIterator;
+IteratorVisitor.prototype.visitMap = vectorIterator;
+/** @ignore */
+export const instance = new IteratorVisitor();
+
+//# sourceMappingURL=iterator.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/iterator.mjs.map b/igv_component/node_modules/apache-arrow/visitor/iterator.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..45ebf86592540270ccb253a833c5c921d4a7a8cb
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/iterator.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/iterator.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAGrB,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AACxC,OAAO,EAAE,IAAI,EAAE,SAAS,EAAE,MAAM,YAAY,CAAC;AAE7C,OAAO,EAGH,KAAK,EACL,GAAG,EAGH,IAAI,GAGP,MAAM,YAAY,CAAC;AACpB,OAAO,EAAE,eAAe,EAAE,MAAM,kBAAkB,CAAC;AAqDnD,cAAc;AACd,MAAM,OAAO,eAAgB,SAAQ,OAAO;CAAI;AAEhD,cAAc;AACd,SAAS,cAAc,CAAqB,MAAiB;IAEzD,MAAM,EAAE,IAAI,EAAE,GAAG,MAAM,CAAC;IAExB,mDAAmD;IACnD,IAAI,MAAM,CAAC,SAAS,KAAK,CAAC,IAAI,MAAM,CAAC,MAAM,KAAK,CAAC,IAAI,CACjD,CAAC,IAAI,CAAC,MAAM,KAAK,IAAI,CAAC,SAAS,CAAC;QAChC,CAAC,IAAI,YAAY,GAAG,IAAK,IAAY,CAAC,QAAQ,KAAK,EAAE,CAAC;QACtD,CAAC,IAAI,YAAY,IAAI,IAAK,IAAa,CAAC,QAAQ,KAAK,EAAE,CAAC;QACxD,CAAC,IAAI,YAAY,KAAK,IAAK,IAAc,CAAC,SAAS,KAAK,SAAS,CAAC,IAAI,CAAC,CAC1E,EAAE;QACC,OAAO,IAAI,eAAe,CAAC,MAAM,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,UAAU,EAAE,EAAE;YAC1D,MAAM,IAAI,GAAG,MAAM,CAAC,IAAI,CAAC,UAAU,CAAC,CAAC;YACrC,OAAO,IAAI,CAAC,MAAM,CAAC,QAAQ,CAAC,CAAC,EAAE,IAAI,CAAC,MAAM,CAAC,CAAC,MAAM,CAAC,QAAQ,CAAC,EAAE,CAAC;QACnE,CAAC,CAAC,CAAC;KACN;IAED,8BAA8B;IAC9B,IAAI,MAAM,GAAG,CAAC,CAAC;IACf,OAAO,IAAI,eAAe,CAAC,MAAM,CAAC,IAAI,CAAC,MAAM,EAAE,CAAC,UAAU,EAAE,EAAE;QAC1D,MAAM,IAAI,GAAG,MAAM,CAAC,IAAI,CAAC,UAAU,CAAC,CAAC;QACrC,MAAM,MAAM,GAAG,IAAI,CAAC,MAAM,CAAC;QAC3B,MAAM,KAAK,GAAG,MAAM,CAAC,KAAK,CAAC,MAAM,EAAE,MAAM,GAAG,MAAM,CAAC,CAAC;QACpD,MAAM,IAAI,MAAM,CAAC;QACjB,OAAO,IAAI,cAAc,CAAC,KAAK,CAAC,CAAC;IACrC,CAAC,CAAC,CAAC;AACP,CAAC;AAED,cAAc;AACd,MAAM,cAAc;IAGhB,YAAoB,MAAiB;QAAjB,WAAM,GAAN,MAAM,CAAW;QAF7B,UAAK,GAAG,CAAC,CAAC;IAEuB,CAAC;IAE1C,IAAI;QACA,IAAI,IAAI,CAAC,KAAK,GAAG,IAAI,CAAC,MAAM,CAAC,MAAM,EAAE;YACjC,OAAO;gBACH,KAAK,EAAE,IAAI,CAAC,MAAM,CAAC,GAAG,CAAC,IAAI,CAAC,KAAK,EAAE,CAAC;aACvC,CAAC;SACL;QAED,OAAO,EAAE,IAAI,EAAE,IAAI,EAAE,KAAK,EAAE,IAAI,EAAE,CAAC;IACvC,CAAC;IAED,CAAC,MAAM,CAAC,QAAQ,CAAC;QACb,OAAO,IAAI,CAAC;IAChB,CAAC;CACJ;AAED,eAAe,CAAC,SAAS,CAAC,SAAS,GAAG,cAAc,CAAC;AACrD,eAAe,CAAC,SAAS,CAAC,SAAS,GAAG,cAAc,CAAC;AACrD,eAAe,CAAC,SAAS,CAAC,QAAQ,GAAG,cAAc,CAAC;AACpD,eAAe,CAAC,SAAS,CAAC,SAAS,GAAG,cAAc,CAAC;AACrD,eAAe,CAAC,SAAS,CAAC,UAAU,GAAG,cAAc,CAAC;AACtD,eAAe,CAAC,SAAS,CAAC,UAAU,GAAG,cAAc,CAAC;AACtD,eAAe,CAAC,SAAS,CAAC,UAAU,GAAG,cAAc,CAAC;AACtD,eAAe,CAAC,SAAS,CAAC,UAAU,GAAG,cAAc,CAAC;AACtD,eAAe,CAAC,SAAS,CAAC,WAAW,GAAG,cAAc,CAAC;AACvD,eAAe,CAAC,SAAS,CAAC,WAAW,GAAG,cAAc,CAAC;AACvD,eAAe,CAAC,SAAS,CAAC,WAAW,GAAG,cAAc,CAAC;AACvD,eAAe,CAAC,SAAS,CAAC,UAAU,GAAG,cAAc,CAAC;AACtD,eAAe,CAAC,SAAS,CAAC,YAAY,GAAG,cAAc,CAAC;AACxD,eAAe,CAAC,SAAS,CAAC,YAAY,GAAG,cAAc,CAAC;AACxD,eAAe,CAAC,SAAS,CAAC,YAAY,GAAG,cAAc,CAAC;AACxD,eAAe,CAAC,SAAS,CAAC,SAAS,GAAG,cAAc,CAAC;AACrD,eAAe,CAAC,SAAS,CAAC,WAAW,GAAG,cAAc,CAAC;AACvD,eAAe,CAAC,SAAS,CAAC,oBAAoB,GAAG,cAAc,CAAC;AAChE,eAAe,CAAC,SAAS,CAAC,SAAS,GAAG,cAAc,CAAC;AACrD,eAAe,CAAC,SAAS,CAAC,YAAY,GAAG,cAAc,CAAC;AACxD,eAAe,CAAC,SAAS,CAAC,oBAAoB,GAAG,cAAc,CAAC;AAChE,eAAe,CAAC,SAAS,CAAC,cAAc,GAAG,cAAc,CAAC;AAC1D,eAAe,CAAC,SAAS,CAAC,oBAAoB,GAAG,cAAc,CAAC;AAChE,eAAe,CAAC,SAAS,CAAC,yBAAyB,GAAG,cAAc,CAAC;AACrE,eAAe,CAAC,SAAS,CAAC,yBAAyB,GAAG,cAAc,CAAC;AACrE,eAAe,CAAC,SAAS,CAAC,wBAAwB,GAAG,cAAc,CAAC;AACpE,eAAe,CAAC,SAAS,CAAC,SAAS,GAAG,cAAc,CAAC;AACrD,eAAe,CAAC,SAAS,CAAC,eAAe,GAAG,cAAc,CAAC;AAC3D,eAAe,CAAC,SAAS,CAAC,oBAAoB,GAAG,cAAc,CAAC;AAChE,eAAe,CAAC,SAAS,CAAC,oBAAoB,GAAG,cAAc,CAAC;AAChE,eAAe,CAAC,SAAS,CAAC,mBAAmB,GAAG,cAAc,CAAC;AAC/D,eAAe,CAAC,SAAS,CAAC,YAAY,GAAG,cAAc,CAAC;AACxD,eAAe,CAAC,SAAS,CAAC,SAAS,GAAG,cAAc,CAAC;AACrD,eAAe,CAAC,SAAS,CAAC,WAAW,GAAG,cAAc,CAAC;AACvD,eAAe,CAAC,SAAS,CAAC,UAAU,GAAG,cAAc,CAAC;AACtD,eAAe,CAAC,SAAS,CAAC,eAAe,GAAG,cAAc,CAAC;AAC3D,eAAe,CAAC,SAAS,CAAC,gBAAgB,GAAG,cAAc,CAAC;AAC5D,eAAe,CAAC,SAAS,CAAC,eAAe,GAAG,cAAc,CAAC;AAC3D,eAAe,CAAC,SAAS,CAAC,aAAa,GAAG,cAAc,CAAC;AACzD,eAAe,CAAC,SAAS,CAAC,oBAAoB,GAAG,cAAc,CAAC;AAChE,eAAe,CAAC,SAAS,CAAC,sBAAsB,GAAG,cAAc,CAAC;AAClE,eAAe,CAAC,SAAS,CAAC,kBAAkB,GAAG,cAAc,CAAC;AAC9D,eAAe,CAAC,SAAS,CAAC,QAAQ,GAAG,cAAc,CAAC;AAEpD,cAAc;AACd,MAAM,CAAC,MAAM,QAAQ,GAAG,IAAI,eAAe,EAAE,CAAC","file":"iterator.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.d.ts b/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..51a401633286bdee0d1c5656e1abff7cc407994b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.d.ts
@@ -0,0 +1,78 @@
+import * as type from '../type.js';
+import { Visitor } from '../visitor.js';
+/** @ignore */
+export interface JSONTypeAssembler extends Visitor {
+    visit<T extends type.DataType>(node: T): Record<string, unknown> | undefined;
+}
+/** @ignore */
+export declare class JSONTypeAssembler extends Visitor {
+    visitNull<T extends type.Null>({ typeId }: T): {
+        name: string;
+    };
+    visitInt<T extends type.Int>({ typeId, bitWidth, isSigned }: T): {
+        name: string;
+        bitWidth: type.IntBitWidth;
+        isSigned: boolean;
+    };
+    visitFloat<T extends type.Float>({ typeId, precision }: T): {
+        name: string;
+        precision: string;
+    };
+    visitBinary<T extends type.Binary>({ typeId }: T): {
+        name: string;
+    };
+    visitBool<T extends type.Bool>({ typeId }: T): {
+        name: string;
+    };
+    visitUtf8<T extends type.Utf8>({ typeId }: T): {
+        name: string;
+    };
+    visitDecimal<T extends type.Decimal>({ typeId, scale, precision, bitWidth }: T): {
+        name: string;
+        scale: number;
+        precision: number;
+        bitWidth: number;
+    };
+    visitDate<T extends type.Date_>({ typeId, unit }: T): {
+        name: string;
+        unit: string;
+    };
+    visitTime<T extends type.Time>({ typeId, unit, bitWidth }: T): {
+        name: string;
+        unit: string;
+        bitWidth: type.TimeBitWidth;
+    };
+    visitTimestamp<T extends type.Timestamp>({ typeId, timezone, unit }: T): {
+        name: string;
+        unit: string;
+        timezone: string | null | undefined;
+    };
+    visitInterval<T extends type.Interval>({ typeId, unit }: T): {
+        name: string;
+        unit: string;
+    };
+    visitList<T extends type.List>({ typeId }: T): {
+        name: string;
+    };
+    visitStruct<T extends type.Struct>({ typeId }: T): {
+        name: string;
+    };
+    visitUnion<T extends type.Union>({ typeId, mode, typeIds }: T): {
+        name: string;
+        mode: string;
+        typeIds: number[];
+    };
+    visitDictionary<T extends type.Dictionary>(node: T): Record<string, unknown> | undefined;
+    visitFixedSizeBinary<T extends type.FixedSizeBinary>({ typeId, byteWidth }: T): {
+        name: string;
+        byteWidth: number;
+    };
+    visitFixedSizeList<T extends type.FixedSizeList>({ typeId, listSize }: T): {
+        name: string;
+        listSize: number;
+    };
+    visitMap<T extends type.Map_>({ typeId, keysSorted }: T): {
+        name: string;
+        keysSorted: boolean;
+    };
+}
diff --git a/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.d.ts.map b/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..70a6ee20ddaace01803d0658d3fd8a59acdbef12
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/jsontypeassembler.ts"],"names":[],"mappings":"AAiBA,OAAO,KAAK,IAAI,MAAM,YAAY,CAAC;AACnC,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AAIxC,cAAc;AACd,MAAM,WAAW,iBAAkB,SAAQ,OAAO;IAC9C,KAAK,CAAC,CAAC,SAAS,IAAI,CAAC,QAAQ,EAAE,IAAI,EAAE,CAAC,GAAG,MAAM,CAAC,MAAM,EAAE,OAAO,CAAC,GAAG,SAAS,CAAC;CAChF;AAED,cAAc;AACd,qBAAa,iBAAkB,SAAQ,OAAO;IAInC,SAAS,CAAC,CAAC,SAAS,IAAI,CAAC,IAAI,EAAE,EAAE,MAAM,EAAE,EAAE,CAAC;;;IAG5C,QAAQ,CAAC,CAAC,SAAS,IAAI,CAAC,GAAG,EAAE,EAAE,MAAM,EAAE,QAAQ,EAAE,QAAQ,EAAE,EAAE,CAAC;;;;;IAG9D,UAAU,CAAC,CAAC,SAAS,IAAI,CAAC,KAAK,EAAE,EAAE,MAAM,EAAE,SAAS,EAAE,EAAE,CAAC;;;;IAGzD,WAAW,CAAC,CAAC,SAAS,IAAI,CAAC,MAAM,EAAE,EAAE,MAAM,EAAE,EAAE,CAAC;;;IAGhD,SAAS,CAAC,CAAC,SAAS,IAAI,CAAC,IAAI,EAAE,EAAE,MAAM,EAAE,EAAE,CAAC;;;IAG5C,SAAS,CAAC,CAAC,SAAS,IAAI,CAAC,IAAI,EAAE,EAAE,MAAM,EAAE,EAAE,CAAC;;;IAG5C,YAAY,CAAC,CAAC,SAAS,IAAI,CAAC,OAAO,EAAE,EAAE,MAAM,EAAE,KAAK,EAAE,SAAS,EAAE,QAAQ,EAAE,EAAE,CAAC;;;;;;IAG9E,SAAS,CAAC,CAAC,SAAS,IAAI,CAAC,KAAK,EAAE,EAAE,MAAM,EAAE,IAAI,EAAE,EAAE,CAAC;;;;IAGnD,SAAS,CAAC,CAAC,SAAS,IAAI,CAAC,IAAI,EAAE,EAAE,MAAM,EAAE,IAAI,EAAE,QAAQ,EAAE,EAAE,CAAC;;;;;IAG5D,cAAc,CAAC,CAAC,SAAS,IAAI,CAAC,SAAS,EAAE,EAAE,MAAM,EAAE,QAAQ,EAAE,IAAI,EAAE,EAAE,CAAC;;;;;IAGtE,aAAa,CAAC,CAAC,SAAS,IAAI,CAAC,QAAQ,EAAE,EAAE,MAAM,EAAE,IAAI,EAAE,EAAE,CAAC;;;;IAG1D,SAAS,CAAC,CAAC,SAAS,IAAI,CAAC,IAAI,EAAE,EAAE,MAAM,EAAE,EAAE,CAAC;;;IAG5C,WAAW,CAAC,CAAC,SAAS,IAAI,CAAC,MAAM,EAAE,EAAE,MAAM,EAAE,EAAE,CAAC;;;IAGhD,UAAU,CAAC,CAAC,SAAS,IAAI,CAAC,KAAK,EAAE,EAAE,MAAM,EAAE,IAAI,EAAE,OAAO,EAAE,EAAE,CAAC;;;;;IAO7D,eAAe,CAAC,CAAC,SAAS,IAAI,CAAC,UAAU,EAAE,IAAI,EAAE,CAAC;IAGlD,oBAAoB,CAAC,CAAC,SAAS,IAAI,CAAC,eAAe,EAAE,EAAE,MAAM,EAAE,SAAS,EAAE,EAAE,CAAC;;;;IAG7E,kBAAkB,CAAC,CAAC,SAAS,IAAI,CAAC,aAAa,EAAE,EAAE,MAAM,EAAE,QAAQ,EAAE,EAAE,CAAC;;;;IAGxE,QAAQ,CAAC,CAAC,SAAS,IAAI,CAAC,IAAI,EAAE,EAAE,MAAM,EAAE,UAAU,EAAE,EAAE,CAAC;;;;CAGjE","file":"jsontypeassembler.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.js b/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.js
new file mode 100644
index 0000000000000000000000000000000000000000..e9f7f688ca88686e8719efaedadccfcfabdefd71
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.js
@@ -0,0 +1,89 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.JSONTypeAssembler = void 0;
+const visitor_js_1 = require("../visitor.js");
+const type_js_1 = require("../fb/type.js");
+const enum_js_1 = require("../enum.js");
+/** @ignore */
+class JSONTypeAssembler extends visitor_js_1.Visitor {
+    visit(node) {
+        return node == null ? undefined : super.visit(node);
+    }
+    visitNull({ typeId }) {
+        return { 'name': type_js_1.Type[typeId].toLowerCase() };
+    }
+    visitInt({ typeId, bitWidth, isSigned }) {
+        return { 'name': type_js_1.Type[typeId].toLowerCase(), 'bitWidth': bitWidth, 'isSigned': isSigned };
+    }
+    visitFloat({ typeId, precision }) {
+        return { 'name': type_js_1.Type[typeId].toLowerCase(), 'precision': enum_js_1.Precision[precision] };
+    }
+    visitBinary({ typeId }) {
+        return { 'name': type_js_1.Type[typeId].toLowerCase() };
+    }
+    visitBool({ typeId }) {
+        return { 'name': type_js_1.Type[typeId].toLowerCase() };
+    }
+    visitUtf8({ typeId }) {
+        return { 'name': type_js_1.Type[typeId].toLowerCase() };
+    }
+    visitDecimal({ typeId, scale, precision, bitWidth }) {
+        return { 'name': type_js_1.Type[typeId].toLowerCase(), 'scale': scale, 'precision': precision, 'bitWidth': bitWidth };
+    }
+    visitDate({ typeId, unit }) {
+        return { 'name': type_js_1.Type[typeId].toLowerCase(), 'unit': enum_js_1.DateUnit[unit] };
+    }
+    visitTime({ typeId, unit, bitWidth }) {
+        return { 'name': type_js_1.Type[typeId].toLowerCase(), 'unit': enum_js_1.TimeUnit[unit], bitWidth };
+    }
+    visitTimestamp({ typeId, timezone, unit }) {
+        return { 'name': type_js_1.Type[typeId].toLowerCase(), 'unit': enum_js_1.TimeUnit[unit], timezone };
+    }
+    visitInterval({ typeId, unit }) {
+        return { 'name': type_js_1.Type[typeId].toLowerCase(), 'unit': enum_js_1.IntervalUnit[unit] };
+    }
+    visitList({ typeId }) {
+        return { 'name': type_js_1.Type[typeId].toLowerCase() };
+    }
+    visitStruct({ typeId }) {
+        return { 'name': type_js_1.Type[typeId].toLowerCase() };
+    }
+    visitUnion({ typeId, mode, typeIds }) {
+        return {
+            'name': type_js_1.Type[typeId].toLowerCase(),
+            'mode': enum_js_1.UnionMode[mode],
+            'typeIds': [...typeIds]
+        };
+    }
+    visitDictionary(node) {
+        return this.visit(node.dictionary);
+    }
+    visitFixedSizeBinary({ typeId, byteWidth }) {
+        return { 'name': type_js_1.Type[typeId].toLowerCase(), 'byteWidth': byteWidth };
+    }
+    visitFixedSizeList({ typeId, listSize }) {
+        return { 'name': type_js_1.Type[typeId].toLowerCase(), 'listSize': listSize };
+    }
+    visitMap({ typeId, keysSorted }) {
+        return { 'name': type_js_1.Type[typeId].toLowerCase(), 'keysSorted': keysSorted };
+    }
+}
+exports.JSONTypeAssembler = JSONTypeAssembler;
+
+//# sourceMappingURL=jsontypeassembler.js.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.js.map b/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..fbe20d6912d4255b5c6e629d6161cc444e0c3e77
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/jsontypeassembler.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAGrB,8CAAwC;AACxC,2CAAkD;AAClD,wCAAoF;AAOpF,cAAc;AACd,MAAa,iBAAkB,SAAQ,oBAAO;IACnC,KAAK,CAA0B,IAAO;QACzC,OAAO,IAAI,IAAI,IAAI,CAAC,CAAC,CAAC,SAAS,CAAC,CAAC,CAAC,KAAK,CAAC,KAAK,CAAC,IAAI,CAAC,CAAC;IACxD,CAAC;IACM,SAAS,CAAsB,EAAE,MAAM,EAAK;QAC/C,OAAO,EAAE,MAAM,EAAE,cAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,CAAC;IACvD,CAAC;IACM,QAAQ,CAAqB,EAAE,MAAM,EAAE,QAAQ,EAAE,QAAQ,EAAK;QACjE,OAAO,EAAE,MAAM,EAAE,cAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,UAAU,EAAE,QAAQ,EAAE,UAAU,EAAE,QAAQ,EAAE,CAAC;IACnG,CAAC;IACM,UAAU,CAAuB,EAAE,MAAM,EAAE,SAAS,EAAK;QAC5D,OAAO,EAAE,MAAM,EAAE,cAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,WAAW,EAAE,mBAAS,CAAC,SAAS,CAAC,EAAE,CAAC;IAC1F,CAAC;IACM,WAAW,CAAwB,EAAE,MAAM,EAAK;QACnD,OAAO,EAAE,MAAM,EAAE,cAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,CAAC;IACvD,CAAC;IACM,SAAS,CAAsB,EAAE,MAAM,EAAK;QAC/C,OAAO,EAAE,MAAM,EAAE,cAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,CAAC;IACvD,CAAC;IACM,SAAS,CAAsB,EAAE,MAAM,EAAK;QAC/C,OAAO,EAAE,MAAM,EAAE,cAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,CAAC;IACvD,CAAC;IACM,YAAY,CAAyB,EAAE,MAAM,EAAE,KAAK,EAAE,SAAS,EAAE,QAAQ,EAAK;QACjF,OAAO,EAAE,MAAM,EAAE,cAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,OAAO,EAAE,KAAK,EAAE,WAAW,EAAE,SAAS,EAAE,UAAU,EAAE,QAAQ,EAAE,CAAC;IACrH,CAAC;IACM,SAAS,CAAuB,EAAE,MAAM,EAAE,IAAI,EAAK;QACtD,OAAO,EAAE,MAAM,EAAE,cAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,MAAM,EAAE,kBAAQ,CAAC,IAAI,CAAC,EAAE,CAAC;IAC/E,CAAC;IACM,SAAS,CAAsB,EAAE,MAAM,EAAE,IAAI,EAAE,QAAQ,EAAK;QAC/D,OAAO,EAAE,MAAM,EAAE,cAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,MAAM,EAAE,kBAAQ,CAAC,IAAI,CAAC,EAAE,QAAQ,EAAE,CAAC;IACzF,CAAC;IACM,cAAc,CAA2B,EAAE,MAAM,EAAE,QAAQ,EAAE,IAAI,EAAK;QACzE,OAAO,EAAE,MAAM,EAAE,cAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,MAAM,EAAE,kBAAQ,CAAC,IAAI,CAAC,EAAE,QAAQ,EAAE,CAAC;IACzF,CAAC;IACM,aAAa,CAA0B,EAAE,MAAM,EAAE,IAAI,EAAK;QAC7D,OAAO,EAAE,MAAM,EAAE,cAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,MAAM,EAAE,sBAAY,CAAC,IAAI,CAAC,EAAE,CAAC;IACnF,CAAC;IACM,SAAS,CAAsB,EAAE,MAAM,EAAK;QAC/C,OAAO,EAAE,MAAM,EAAE,cAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,CAAC;IACvD,CAAC;IACM,WAAW,CAAwB,EAAE,MAAM,EAAK;QACnD,OAAO,EAAE,MAAM,EAAE,cAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,CAAC;IACvD,CAAC;IACM,UAAU,CAAuB,EAAE,MAAM,EAAE,IAAI,EAAE,OAAO,EAAK;QAChE,OAAO;YACH,MAAM,EAAE,cAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE;YACvC,MAAM,EAAE,mBAAS,CAAC,IAAI,CAAC;YACvB,SAAS,EAAE,CAAC,GAAG,OAAO,CAAC;SAC1B,CAAC;IACN,CAAC;IACM,eAAe,CAA4B,IAAO;QACrD,OAAO,IAAI,CAAC,KAAK,CAAC,IAAI,CAAC,UAAU,CAAC,CAAC;IACvC,CAAC;IACM,oBAAoB,CAAiC,EAAE,MAAM,EAAE,SAAS,EAAK;QAChF,OAAO,EAAE,MAAM,EAAE,cAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,WAAW,EAAE,SAAS,EAAE,CAAC;IAC/E,CAAC;IACM,kBAAkB,CAA+B,EAAE,MAAM,EAAE,QAAQ,EAAK;QAC3E,OAAO,EAAE,MAAM,EAAE,cAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,UAAU,EAAE,QAAQ,EAAE,CAAC;IAC7E,CAAC;IACM,QAAQ,CAAsB,EAAE,MAAM,EAAE,UAAU,EAAK;QAC1D,OAAO,EAAE,MAAM,EAAE,cAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,YAAY,EAAE,UAAU,EAAE,CAAC;IACjF,CAAC;CACJ;AA9DD,8CA8DC","file":"jsontypeassembler.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.mjs b/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..c59d1d4337fe69eee65b3598a17c6aa28b3fcb06
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.mjs
@@ -0,0 +1,85 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Visitor } from '../visitor.mjs';
+import { Type as ArrowType } from '../fb/type.mjs';
+import { Precision, DateUnit, TimeUnit, IntervalUnit, UnionMode } from '../enum.mjs';
+/** @ignore */
+export class JSONTypeAssembler extends Visitor {
+    visit(node) {
+        return node == null ? undefined : super.visit(node);
+    }
+    visitNull({ typeId }) {
+        return { 'name': ArrowType[typeId].toLowerCase() };
+    }
+    visitInt({ typeId, bitWidth, isSigned }) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'bitWidth': bitWidth, 'isSigned': isSigned };
+    }
+    visitFloat({ typeId, precision }) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'precision': Precision[precision] };
+    }
+    visitBinary({ typeId }) {
+        return { 'name': ArrowType[typeId].toLowerCase() };
+    }
+    visitBool({ typeId }) {
+        return { 'name': ArrowType[typeId].toLowerCase() };
+    }
+    visitUtf8({ typeId }) {
+        return { 'name': ArrowType[typeId].toLowerCase() };
+    }
+    visitDecimal({ typeId, scale, precision, bitWidth }) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'scale': scale, 'precision': precision, 'bitWidth': bitWidth };
+    }
+    visitDate({ typeId, unit }) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'unit': DateUnit[unit] };
+    }
+    visitTime({ typeId, unit, bitWidth }) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'unit': TimeUnit[unit], bitWidth };
+    }
+    visitTimestamp({ typeId, timezone, unit }) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'unit': TimeUnit[unit], timezone };
+    }
+    visitInterval({ typeId, unit }) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'unit': IntervalUnit[unit] };
+    }
+    visitList({ typeId }) {
+        return { 'name': ArrowType[typeId].toLowerCase() };
+    }
+    visitStruct({ typeId }) {
+        return { 'name': ArrowType[typeId].toLowerCase() };
+    }
+    visitUnion({ typeId, mode, typeIds }) {
+        return {
+            'name': ArrowType[typeId].toLowerCase(),
+            'mode': UnionMode[mode],
+            'typeIds': [...typeIds]
+        };
+    }
+    visitDictionary(node) {
+        return this.visit(node.dictionary);
+    }
+    visitFixedSizeBinary({ typeId, byteWidth }) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'byteWidth': byteWidth };
+    }
+    visitFixedSizeList({ typeId, listSize }) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'listSize': listSize };
+    }
+    visitMap({ typeId, keysSorted }) {
+        return { 'name': ArrowType[typeId].toLowerCase(), 'keysSorted': keysSorted };
+    }
+}
+
+//# sourceMappingURL=jsontypeassembler.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.mjs.map b/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..6bbd78a26069d8c2b675c720c9e4c800cd9a8f12
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/jsontypeassembler.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/jsontypeassembler.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAGrB,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AACxC,OAAO,EAAE,IAAI,IAAI,SAAS,EAAE,MAAM,eAAe,CAAC;AAClD,OAAO,EAAE,SAAS,EAAE,QAAQ,EAAE,QAAQ,EAAE,YAAY,EAAE,SAAS,EAAE,MAAM,YAAY,CAAC;AAOpF,cAAc;AACd,MAAM,OAAO,iBAAkB,SAAQ,OAAO;IACnC,KAAK,CAA0B,IAAO;QACzC,OAAO,IAAI,IAAI,IAAI,CAAC,CAAC,CAAC,SAAS,CAAC,CAAC,CAAC,KAAK,CAAC,KAAK,CAAC,IAAI,CAAC,CAAC;IACxD,CAAC;IACM,SAAS,CAAsB,EAAE,MAAM,EAAK;QAC/C,OAAO,EAAE,MAAM,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,CAAC;IACvD,CAAC;IACM,QAAQ,CAAqB,EAAE,MAAM,EAAE,QAAQ,EAAE,QAAQ,EAAK;QACjE,OAAO,EAAE,MAAM,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,UAAU,EAAE,QAAQ,EAAE,UAAU,EAAE,QAAQ,EAAE,CAAC;IACnG,CAAC;IACM,UAAU,CAAuB,EAAE,MAAM,EAAE,SAAS,EAAK;QAC5D,OAAO,EAAE,MAAM,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,WAAW,EAAE,SAAS,CAAC,SAAS,CAAC,EAAE,CAAC;IAC1F,CAAC;IACM,WAAW,CAAwB,EAAE,MAAM,EAAK;QACnD,OAAO,EAAE,MAAM,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,CAAC;IACvD,CAAC;IACM,SAAS,CAAsB,EAAE,MAAM,EAAK;QAC/C,OAAO,EAAE,MAAM,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,CAAC;IACvD,CAAC;IACM,SAAS,CAAsB,EAAE,MAAM,EAAK;QAC/C,OAAO,EAAE,MAAM,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,CAAC;IACvD,CAAC;IACM,YAAY,CAAyB,EAAE,MAAM,EAAE,KAAK,EAAE,SAAS,EAAE,QAAQ,EAAK;QACjF,OAAO,EAAE,MAAM,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,OAAO,EAAE,KAAK,EAAE,WAAW,EAAE,SAAS,EAAE,UAAU,EAAE,QAAQ,EAAE,CAAC;IACrH,CAAC;IACM,SAAS,CAAuB,EAAE,MAAM,EAAE,IAAI,EAAK;QACtD,OAAO,EAAE,MAAM,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,MAAM,EAAE,QAAQ,CAAC,IAAI,CAAC,EAAE,CAAC;IAC/E,CAAC;IACM,SAAS,CAAsB,EAAE,MAAM,EAAE,IAAI,EAAE,QAAQ,EAAK;QAC/D,OAAO,EAAE,MAAM,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,MAAM,EAAE,QAAQ,CAAC,IAAI,CAAC,EAAE,QAAQ,EAAE,CAAC;IACzF,CAAC;IACM,cAAc,CAA2B,EAAE,MAAM,EAAE,QAAQ,EAAE,IAAI,EAAK;QACzE,OAAO,EAAE,MAAM,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,MAAM,EAAE,QAAQ,CAAC,IAAI,CAAC,EAAE,QAAQ,EAAE,CAAC;IACzF,CAAC;IACM,aAAa,CAA0B,EAAE,MAAM,EAAE,IAAI,EAAK;QAC7D,OAAO,EAAE,MAAM,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,MAAM,EAAE,YAAY,CAAC,IAAI,CAAC,EAAE,CAAC;IACnF,CAAC;IACM,SAAS,CAAsB,EAAE,MAAM,EAAK;QAC/C,OAAO,EAAE,MAAM,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,CAAC;IACvD,CAAC;IACM,WAAW,CAAwB,EAAE,MAAM,EAAK;QACnD,OAAO,EAAE,MAAM,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,CAAC;IACvD,CAAC;IACM,UAAU,CAAuB,EAAE,MAAM,EAAE,IAAI,EAAE,OAAO,EAAK;QAChE,OAAO;YACH,MAAM,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE;YACvC,MAAM,EAAE,SAAS,CAAC,IAAI,CAAC;YACvB,SAAS,EAAE,CAAC,GAAG,OAAO,CAAC;SAC1B,CAAC;IACN,CAAC;IACM,eAAe,CAA4B,IAAO;QACrD,OAAO,IAAI,CAAC,KAAK,CAAC,IAAI,CAAC,UAAU,CAAC,CAAC;IACvC,CAAC;IACM,oBAAoB,CAAiC,EAAE,MAAM,EAAE,SAAS,EAAK;QAChF,OAAO,EAAE,MAAM,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,WAAW,EAAE,SAAS,EAAE,CAAC;IAC/E,CAAC;IACM,kBAAkB,CAA+B,EAAE,MAAM,EAAE,QAAQ,EAAK;QAC3E,OAAO,EAAE,MAAM,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,UAAU,EAAE,QAAQ,EAAE,CAAC;IAC7E,CAAC;IACM,QAAQ,CAAsB,EAAE,MAAM,EAAE,UAAU,EAAK;QAC1D,OAAO,EAAE,MAAM,EAAE,SAAS,CAAC,MAAM,CAAC,CAAC,WAAW,EAAE,EAAE,YAAY,EAAE,UAAU,EAAE,CAAC;IACjF,CAAC;CACJ","file":"jsontypeassembler.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.d.ts b/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..4526afbbcacb2841af76355e63a7a144aec8be3a
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.d.ts
@@ -0,0 +1,78 @@
+import { Data } from '../data.js';
+import { Field } from '../schema.js';
+import { Vector } from '../vector.js';
+import { Visitor } from '../visitor.js';
+import { RecordBatch } from '../recordbatch.js';
+import { DataType, Float, Int, Date_, Interval, Time, Timestamp, Union, Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct } from '../type.js';
+/** @ignore */
+export interface JSONVectorAssembler extends Visitor {
+    visit<T extends DataType>(field: Field, node: Data<T>): Record<string, unknown>;
+    visitMany<T extends DataType>(fields: Field[], nodes: readonly Data<T>[]): Record<string, unknown>[];
+    getVisitFn<T extends DataType>(node: Vector<T> | Data<T>): (data: Data<T>) => {
+        name: string;
+        count: number;
+        VALIDITY: (0 | 1)[];
+        DATA?: any[];
+        OFFSET?: number[];
+        TYPE?: number[];
+        children?: any[];
+    };
+    visitNull<T extends Null>(data: Data<T>): Record<string, never>;
+    visitBool<T extends Bool>(data: Data<T>): {
+        DATA: boolean[];
+    };
+    visitInt<T extends Int>(data: Data<T>): {
+        DATA: number[] | string[];
+    };
+    visitFloat<T extends Float>(data: Data<T>): {
+        DATA: number[];
+    };
+    visitUtf8<T extends Utf8>(data: Data<T>): {
+        DATA: string[];
+        OFFSET: number[];
+    };
+    visitBinary<T extends Binary>(data: Data<T>): {
+        DATA: string[];
+        OFFSET: number[];
+    };
+    visitFixedSizeBinary<T extends FixedSizeBinary>(data: Data<T>): {
+        DATA: string[];
+    };
+    visitDate<T extends Date_>(data: Data<T>): {
+        DATA: number[];
+    };
+    visitTimestamp<T extends Timestamp>(data: Data<T>): {
+        DATA: string[];
+    };
+    visitTime<T extends Time>(data: Data<T>): {
+        DATA: number[];
+    };
+    visitDecimal<T extends Decimal>(data: Data<T>): {
+        DATA: string[];
+    };
+    visitList<T extends List>(data: Data<T>): {
+        children: any[];
+        OFFSET: number[];
+    };
+    visitStruct<T extends Struct>(data: Data<T>): {
+        children: any[];
+    };
+    visitUnion<T extends Union>(data: Data<T>): {
+        children: any[];
+        TYPE: number[];
+    };
+    visitInterval<T extends Interval>(data: Data<T>): {
+        DATA: number[];
+    };
+    visitFixedSizeList<T extends FixedSizeList>(data: Data<T>): {
+        children: any[];
+    };
+    visitMap<T extends Map_>(data: Data<T>): {
+        children: any[];
+    };
+}
+/** @ignore */
+export declare class JSONVectorAssembler extends Visitor {
+    /** @nocollapse */
+    static assemble<T extends RecordBatch>(...batches: T[]): Record<string, unknown>[][];
+}
diff --git a/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.d.ts.map b/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..0a25f1534383c5611e644b416810272a1c358b8e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/jsonvectorassembler.ts"],"names":[],"mappings":"AAkBA,OAAO,EAAE,IAAI,EAAE,MAAM,YAAY,CAAC;AAClC,OAAO,EAAE,KAAK,EAAE,MAAM,cAAc,CAAC;AACrC,OAAO,EAAE,MAAM,EAAE,MAAM,cAAc,CAAC;AACtC,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AAExC,OAAO,EAAE,WAAW,EAAE,MAAM,mBAAmB,CAAC;AAGhD,OAAO,EACH,QAAQ,EACR,KAAK,EAAE,GAAG,EAAE,KAAK,EAAE,QAAQ,EAAE,IAAI,EAAE,SAAS,EAAE,KAAK,EACnD,IAAI,EAAE,IAAI,EAAE,IAAI,EAAE,MAAM,EAAE,OAAO,EAAE,eAAe,EAAE,IAAI,EAAE,aAAa,EAAE,IAAI,EAAE,MAAM,EACxF,MAAM,YAAY,CAAC;AAEpB,cAAc;AACd,MAAM,WAAW,mBAAoB,SAAQ,OAAO;IAEhD,KAAK,CAAC,CAAC,SAAS,QAAQ,EAAE,KAAK,EAAE,KAAK,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG,MAAM,CAAC,MAAM,EAAE,OAAO,CAAC,CAAC;IAChF,SAAS,CAAC,CAAC,SAAS,QAAQ,EAAE,MAAM,EAAE,KAAK,EAAE,EAAE,KAAK,EAAE,SAAS,IAAI,CAAC,CAAC,CAAC,EAAE,GAAG,MAAM,CAAC,MAAM,EAAE,OAAO,CAAC,EAAE,CAAC;IACrG,UAAU,CAAC,CAAC,SAAS,QAAQ,EAAE,IAAI,EAAE,MAAM,CAAC,CAAC,CAAC,GAAG,IAAI,CAAC,CAAC,CAAC,GAAG,CAAC,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,KAAK;QAAE,IAAI,EAAE,MAAM,CAAC;QAAC,KAAK,EAAE,MAAM,CAAC;QAAC,QAAQ,EAAE,CAAC,CAAC,GAAG,CAAC,CAAC,EAAE,CAAC;QAAC,IAAI,CAAC,EAAE,GAAG,EAAE,CAAC;QAAC,MAAM,CAAC,EAAE,MAAM,EAAE,CAAC;QAAC,IAAI,CAAC,EAAE,MAAM,EAAE,CAAC;QAAC,QAAQ,CAAC,EAAE,GAAG,EAAE,CAAA;KAAE,CAAC;IAEvM,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG,MAAM,CAAC,MAAM,EAAE,KAAK,CAAC,CAAC;IAChE,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG;QAAE,IAAI,EAAE,OAAO,EAAE,CAAA;KAAE,CAAC;IAC9D,QAAQ,CAAC,CAAC,SAAS,GAAG,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG;QAAE,IAAI,EAAE,MAAM,EAAE,GAAG,MAAM,EAAE,CAAA;KAAE,CAAC;IACtE,UAAU,CAAC,CAAC,SAAS,KAAK,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG;QAAE,IAAI,EAAE,MAAM,EAAE,CAAA;KAAE,CAAC;IAC/D,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG;QAAE,IAAI,EAAE,MAAM,EAAE,CAAC;QAAC,MAAM,EAAE,MAAM,EAAE,CAAA;KAAE,CAAC;IAC/E,WAAW,CAAC,CAAC,SAAS,MAAM,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG;QAAE,IAAI,EAAE,MAAM,EAAE,CAAC;QAAC,MAAM,EAAE,MAAM,EAAE,CAAA;KAAE,CAAC;IACnF,oBAAoB,CAAC,CAAC,SAAS,eAAe,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG;QAAE,IAAI,EAAE,MAAM,EAAE,CAAA;KAAE,CAAC;IACnF,SAAS,CAAC,CAAC,SAAS,KAAK,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG;QAAE,IAAI,EAAE,MAAM,EAAE,CAAA;KAAE,CAAC;IAC9D,cAAc,CAAC,CAAC,SAAS,SAAS,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG;QAAE,IAAI,EAAE,MAAM,EAAE,CAAA;KAAE,CAAC;IACvE,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG;QAAE,IAAI,EAAE,MAAM,EAAE,CAAA;KAAE,CAAC;IAC7D,YAAY,CAAC,CAAC,SAAS,OAAO,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG;QAAE,IAAI,EAAE,MAAM,EAAE,CAAA;KAAE,CAAC;IACnE,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG;QAAE,QAAQ,EAAE,GAAG,EAAE,CAAC;QAAC,MAAM,EAAE,MAAM,EAAE,CAAA;KAAE,CAAC;IAChF,WAAW,CAAC,CAAC,SAAS,MAAM,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG;QAAE,QAAQ,EAAE,GAAG,EAAE,CAAA;KAAE,CAAC;IAClE,UAAU,CAAC,CAAC,SAAS,KAAK,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG;QAAE,QAAQ,EAAE,GAAG,EAAE,CAAC;QAAC,IAAI,EAAE,MAAM,EAAE,CAAA;KAAE,CAAC;IAChF,aAAa,CAAC,CAAC,SAAS,QAAQ,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG;QAAE,IAAI,EAAE,MAAM,EAAE,CAAA;KAAE,CAAC;IACrE,kBAAkB,CAAC,CAAC,SAAS,aAAa,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG;QAAE,QAAQ,EAAE,GAAG,EAAE,CAAA;KAAE,CAAC;IAChF,QAAQ,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG;QAAE,QAAQ,EAAE,GAAG,EAAE,CAAA;KAAE,CAAC;CAChE;AAED,cAAc;AACd,qBAAa,mBAAoB,SAAQ,OAAO;IAE5C,kBAAkB;WACJ,QAAQ,CAAC,CAAC,SAAS,WAAW,EAAE,GAAG,OAAO,EAAE,CAAC,EAAE;CAgGhE","file":"jsonvectorassembler.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.js b/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.js
new file mode 100644
index 0000000000000000000000000000000000000000..413e7ec40bc62704c4b819f08f42d7f9efe23b6d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.js
@@ -0,0 +1,138 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.JSONVectorAssembler = void 0;
+const bn_js_1 = require("../util/bn.js");
+const vector_js_1 = require("../vector.js");
+const visitor_js_1 = require("../visitor.js");
+const enum_js_1 = require("../enum.js");
+const enum_js_2 = require("../enum.js");
+const bit_js_1 = require("../util/bit.js");
+const type_js_1 = require("../type.js");
+/** @ignore */
+class JSONVectorAssembler extends visitor_js_1.Visitor {
+    /** @nocollapse */
+    static assemble(...batches) {
+        const assemlber = new JSONVectorAssembler();
+        return batches.map(({ schema, data }) => {
+            return assemlber.visitMany(schema.fields, data.children);
+        });
+    }
+    visit({ name }, data) {
+        const { length } = data;
+        const { offset, nullCount, nullBitmap } = data;
+        const type = type_js_1.DataType.isDictionary(data.type) ? data.type.indices : data.type;
+        const buffers = Object.assign([], data.buffers, { [enum_js_1.BufferType.VALIDITY]: undefined });
+        return Object.assign({ 'name': name, 'count': length, 'VALIDITY': type_js_1.DataType.isNull(type) ? undefined
+                : nullCount <= 0 ? Array.from({ length }, () => 1)
+                    : [...new bit_js_1.BitIterator(nullBitmap, offset, length, null, bit_js_1.getBit)] }, super.visit(data.clone(type, offset, length, 0, buffers)));
+    }
+    visitNull() { return {}; }
+    visitBool({ values, offset, length }) {
+        return { 'DATA': [...new bit_js_1.BitIterator(values, offset, length, null, bit_js_1.getBool)] };
+    }
+    visitInt(data) {
+        return {
+            'DATA': data.type.bitWidth < 64
+                ? [...data.values]
+                : [...bigNumsToStrings(data.values, 2)]
+        };
+    }
+    visitFloat(data) {
+        return { 'DATA': [...data.values] };
+    }
+    visitUtf8(data) {
+        return { 'DATA': [...new vector_js_1.Vector([data])], 'OFFSET': [...data.valueOffsets] };
+    }
+    visitBinary(data) {
+        return { 'DATA': [...binaryToString(new vector_js_1.Vector([data]))], OFFSET: [...data.valueOffsets] };
+    }
+    visitFixedSizeBinary(data) {
+        return { 'DATA': [...binaryToString(new vector_js_1.Vector([data]))] };
+    }
+    visitDate(data) {
+        return {
+            'DATA': data.type.unit === enum_js_2.DateUnit.DAY
+                ? [...data.values]
+                : [...bigNumsToStrings(data.values, 2)]
+        };
+    }
+    visitTimestamp(data) {
+        return { 'DATA': [...bigNumsToStrings(data.values, 2)] };
+    }
+    visitTime(data) {
+        return {
+            'DATA': data.type.unit < enum_js_2.TimeUnit.MICROSECOND
+                ? [...data.values]
+                : [...bigNumsToStrings(data.values, 2)]
+        };
+    }
+    visitDecimal(data) {
+        return { 'DATA': [...bigNumsToStrings(data.values, 4)] };
+    }
+    visitList(data) {
+        return {
+            'OFFSET': [...data.valueOffsets],
+            'children': this.visitMany(data.type.children, data.children)
+        };
+    }
+    visitStruct(data) {
+        return {
+            'children': this.visitMany(data.type.children, data.children)
+        };
+    }
+    visitUnion(data) {
+        return {
+            'TYPE': [...data.typeIds],
+            'OFFSET': data.type.mode === enum_js_2.UnionMode.Dense ? [...data.valueOffsets] : undefined,
+            'children': this.visitMany(data.type.children, data.children)
+        };
+    }
+    visitInterval(data) {
+        return { 'DATA': [...data.values] };
+    }
+    visitFixedSizeList(data) {
+        return {
+            'children': this.visitMany(data.type.children, data.children)
+        };
+    }
+    visitMap(data) {
+        return {
+            'OFFSET': [...data.valueOffsets],
+            'children': this.visitMany(data.type.children, data.children)
+        };
+    }
+}
+exports.JSONVectorAssembler = JSONVectorAssembler;
+/** @ignore */
+function* binaryToString(vector) {
+    for (const octets of vector) {
+        yield octets.reduce((str, byte) => {
+            return `${str}${('0' + (byte & 0xFF).toString(16)).slice(-2)}`;
+        }, '').toUpperCase();
+    }
+}
+/** @ignore */
+function* bigNumsToStrings(values, stride) {
+    const u32s = new Uint32Array(values.buffer);
+    for (let i = -1, n = u32s.length / stride; ++i < n;) {
+        yield `${bn_js_1.BN.new(u32s.subarray((i + 0) * stride, (i + 1) * stride), false)}`;
+    }
+}
+
+//# sourceMappingURL=jsonvectorassembler.js.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.js.map b/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..941bda6276f717eef494e37ccbb1a453ecf2819f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.mjs b/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..7453956198e0983883dfe03a89b118d46b193eac
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.mjs
@@ -0,0 +1,134 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { BN } from '../util/bn.mjs';
+import { Vector } from '../vector.mjs';
+import { Visitor } from '../visitor.mjs';
+import { BufferType } from '../enum.mjs';
+import { UnionMode, DateUnit, TimeUnit } from '../enum.mjs';
+import { BitIterator, getBit, getBool } from '../util/bit.mjs';
+import { DataType, } from '../type.mjs';
+/** @ignore */
+export class JSONVectorAssembler extends Visitor {
+    /** @nocollapse */
+    static assemble(...batches) {
+        const assemlber = new JSONVectorAssembler();
+        return batches.map(({ schema, data }) => {
+            return assemlber.visitMany(schema.fields, data.children);
+        });
+    }
+    visit({ name }, data) {
+        const { length } = data;
+        const { offset, nullCount, nullBitmap } = data;
+        const type = DataType.isDictionary(data.type) ? data.type.indices : data.type;
+        const buffers = Object.assign([], data.buffers, { [BufferType.VALIDITY]: undefined });
+        return Object.assign({ 'name': name, 'count': length, 'VALIDITY': DataType.isNull(type) ? undefined
+                : nullCount <= 0 ? Array.from({ length }, () => 1)
+                    : [...new BitIterator(nullBitmap, offset, length, null, getBit)] }, super.visit(data.clone(type, offset, length, 0, buffers)));
+    }
+    visitNull() { return {}; }
+    visitBool({ values, offset, length }) {
+        return { 'DATA': [...new BitIterator(values, offset, length, null, getBool)] };
+    }
+    visitInt(data) {
+        return {
+            'DATA': data.type.bitWidth < 64
+                ? [...data.values]
+                : [...bigNumsToStrings(data.values, 2)]
+        };
+    }
+    visitFloat(data) {
+        return { 'DATA': [...data.values] };
+    }
+    visitUtf8(data) {
+        return { 'DATA': [...new Vector([data])], 'OFFSET': [...data.valueOffsets] };
+    }
+    visitBinary(data) {
+        return { 'DATA': [...binaryToString(new Vector([data]))], OFFSET: [...data.valueOffsets] };
+    }
+    visitFixedSizeBinary(data) {
+        return { 'DATA': [...binaryToString(new Vector([data]))] };
+    }
+    visitDate(data) {
+        return {
+            'DATA': data.type.unit === DateUnit.DAY
+                ? [...data.values]
+                : [...bigNumsToStrings(data.values, 2)]
+        };
+    }
+    visitTimestamp(data) {
+        return { 'DATA': [...bigNumsToStrings(data.values, 2)] };
+    }
+    visitTime(data) {
+        return {
+            'DATA': data.type.unit < TimeUnit.MICROSECOND
+                ? [...data.values]
+                : [...bigNumsToStrings(data.values, 2)]
+        };
+    }
+    visitDecimal(data) {
+        return { 'DATA': [...bigNumsToStrings(data.values, 4)] };
+    }
+    visitList(data) {
+        return {
+            'OFFSET': [...data.valueOffsets],
+            'children': this.visitMany(data.type.children, data.children)
+        };
+    }
+    visitStruct(data) {
+        return {
+            'children': this.visitMany(data.type.children, data.children)
+        };
+    }
+    visitUnion(data) {
+        return {
+            'TYPE': [...data.typeIds],
+            'OFFSET': data.type.mode === UnionMode.Dense ? [...data.valueOffsets] : undefined,
+            'children': this.visitMany(data.type.children, data.children)
+        };
+    }
+    visitInterval(data) {
+        return { 'DATA': [...data.values] };
+    }
+    visitFixedSizeList(data) {
+        return {
+            'children': this.visitMany(data.type.children, data.children)
+        };
+    }
+    visitMap(data) {
+        return {
+            'OFFSET': [...data.valueOffsets],
+            'children': this.visitMany(data.type.children, data.children)
+        };
+    }
+}
+/** @ignore */
+function* binaryToString(vector) {
+    for (const octets of vector) {
+        yield octets.reduce((str, byte) => {
+            return `${str}${('0' + (byte & 0xFF).toString(16)).slice(-2)}`;
+        }, '').toUpperCase();
+    }
+}
+/** @ignore */
+function* bigNumsToStrings(values, stride) {
+    const u32s = new Uint32Array(values.buffer);
+    for (let i = -1, n = u32s.length / stride; ++i < n;) {
+        yield `${BN.new(u32s.subarray((i + 0) * stride, (i + 1) * stride), false)}`;
+    }
+}
+
+//# sourceMappingURL=jsonvectorassembler.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.mjs.map b/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..8c5e9e2d3ab970d46d0f5f255d614ac54be47f82
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/jsonvectorassembler.mjs.map
@@ -0,0 +1 @@
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diff --git a/igv_component/node_modules/apache-arrow/visitor/set.d.ts b/igv_component/node_modules/apache-arrow/visitor/set.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..102c64a15063572bc18737835f9e6a2dbff3ab2e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/set.d.ts
@@ -0,0 +1,113 @@
+import { Data } from '../data.js';
+import { Visitor } from '../visitor.js';
+import { TypeToDataType } from '../interfaces.js';
+import { Type } from '../enum.js';
+import { DataType, Dictionary, Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct, Float, Float16, Float32, Float64, Int, Uint8, Uint16, Uint32, Uint64, Int8, Int16, Int32, Int64, Date_, DateDay, DateMillisecond, Interval, IntervalDayTime, IntervalYearMonth, Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond, Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond, Union, DenseUnion, SparseUnion } from '../type.js';
+/** @ignore */
+export interface SetVisitor extends Visitor {
+    visit<T extends DataType>(node: Data<T>, index: number, value: T['TValue']): void;
+    visitMany<T extends DataType>(nodes: Data<T>[], indices: number[], values: T['TValue'][]): void[];
+    getVisitFn<T extends DataType>(node: Data<T> | T): (data: Data<T>, index: number, value: Data<T>['TValue']) => void;
+    getVisitFn<T extends Type>(node: T): (data: Data<TypeToDataType<T>>, index: number, value: TypeToDataType<T>['TValue']) => void;
+    visitNull<T extends Null>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitBool<T extends Bool>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitInt<T extends Int>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitInt8<T extends Int8>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitInt16<T extends Int16>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitInt32<T extends Int32>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitInt64<T extends Int64>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitUint8<T extends Uint8>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitUint16<T extends Uint16>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitUint32<T extends Uint32>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitUint64<T extends Uint64>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitFloat<T extends Float>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitFloat16<T extends Float16>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitFloat32<T extends Float32>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitFloat64<T extends Float64>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitUtf8<T extends Utf8>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitBinary<T extends Binary>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitFixedSizeBinary<T extends FixedSizeBinary>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitDate<T extends Date_>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitDateDay<T extends DateDay>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitDateMillisecond<T extends DateMillisecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimestamp<T extends Timestamp>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimestampSecond<T extends TimestampSecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimestampMillisecond<T extends TimestampMillisecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimestampMicrosecond<T extends TimestampMicrosecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimestampNanosecond<T extends TimestampNanosecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTime<T extends Time>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimeSecond<T extends TimeSecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimeMillisecond<T extends TimeMillisecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimeMicrosecond<T extends TimeMicrosecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitTimeNanosecond<T extends TimeNanosecond>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitDecimal<T extends Decimal>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitList<T extends List>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitStruct<T extends Struct>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitUnion<T extends Union>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitDenseUnion<T extends DenseUnion>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitSparseUnion<T extends SparseUnion>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitDictionary<T extends Dictionary>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitInterval<T extends Interval>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitIntervalDayTime<T extends IntervalDayTime>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitIntervalYearMonth<T extends IntervalYearMonth>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitFixedSizeList<T extends FixedSizeList>(data: Data<T>, index: number, value: T['TValue']): void;
+    visitMap<T extends Map_>(data: Data<T>, index: number, value: T['TValue']): void;
+}
+/** @ignore */
+export declare class SetVisitor extends Visitor {
+}
+/** @ignore */
+export declare const setEpochMsToDays: (data: Int32Array, index: number, epochMs: number) => void;
+/** @ignore */
+export declare const setEpochMsToMillisecondsLong: (data: Int32Array, index: number, epochMs: number) => void;
+/** @ignore */
+export declare const setEpochMsToMicrosecondsLong: (data: Int32Array, index: number, epochMs: number) => void;
+/** @ignore */
+export declare const setEpochMsToNanosecondsLong: (data: Int32Array, index: number, epochMs: number) => void;
+/** @ignore */
+export declare const setVariableWidthBytes: (values: Uint8Array, valueOffsets: Int32Array, index: number, value: Uint8Array) => void;
+/** @ignore */
+export declare const setInt: <T extends Int<Type.Int | Type.Int8 | Type.Int16 | Type.Int32 | Type.Int64 | Type.Uint8 | Type.Uint16 | Type.Uint32 | Type.Uint64>>({ values }: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setFloat: <T extends Float32 | Float64>({ values }: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setFloat16: <T extends Float16>({ values }: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setAnyFloat: <T extends Float<Type.Float | Type.Float16 | Type.Float32 | Type.Float64>>(data: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setDateDay: <T extends DateDay>({ values }: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setDateMillisecond: <T extends DateMillisecond>({ values }: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setFixedSizeBinary: <T extends FixedSizeBinary>({ stride, values }: Data<T>, index: number, value: T["TValue"]) => void;
+export declare const setDate: <T extends Date_<import("../type.js").Dates>>(data: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setTimestampSecond: <T extends TimestampSecond>({ values }: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setTimestampMillisecond: <T extends TimestampMillisecond>({ values }: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setTimestampMicrosecond: <T extends TimestampMicrosecond>({ values }: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setTimestampNanosecond: <T extends TimestampNanosecond>({ values }: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setTimestamp: <T extends Timestamp<Type.Timestamp | Type.TimestampSecond | Type.TimestampMillisecond | Type.TimestampMicrosecond | Type.TimestampNanosecond>>(data: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setTimeSecond: <T extends TimeSecond>({ values }: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setTimeMillisecond: <T extends TimeMillisecond>({ values }: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setTimeMicrosecond: <T extends TimeMicrosecond>({ values }: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setTimeNanosecond: <T extends TimeNanosecond>({ values }: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setTime: <T extends Time<Type.Time | Type.TimeSecond | Type.TimeMillisecond | Type.TimeMicrosecond | Type.TimeNanosecond>>(data: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setDecimal: <T extends Decimal>({ values, stride }: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setIntervalValue: <T extends Interval<Type.Interval | Type.IntervalDayTime | Type.IntervalYearMonth>>(data: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setIntervalDayTime: <T extends IntervalDayTime>({ values }: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const setIntervalYearMonth: <T extends IntervalYearMonth>({ values }: Data<T>, index: number, value: T["TValue"]) => void;
+/** @ignore */
+export declare const instance: SetVisitor;
diff --git a/igv_component/node_modules/apache-arrow/visitor/set.d.ts.map b/igv_component/node_modules/apache-arrow/visitor/set.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..ded4e39d1b8a306a42e5d23aac7f98bc4c8897d7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/set.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/set.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,IAAI,EAAE,MAAM,YAAY,CAAC;AAGlC,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AAExC,OAAO,EAAE,cAAc,EAAE,MAAM,kBAAkB,CAAC;AAElD,OAAO,EAAE,IAAI,EAA0D,MAAM,YAAY,CAAC;AAC1F,OAAO,EACH,QAAQ,EAAE,UAAU,EACpB,IAAI,EAAE,IAAI,EAAE,IAAI,EAAE,MAAM,EAAE,OAAO,EAAE,eAAe,EAAE,IAAI,EAAE,aAAa,EAAE,IAAI,EAAE,MAAM,EACrF,KAAK,EAAE,OAAO,EAAE,OAAO,EAAE,OAAO,EAChC,GAAG,EAAE,KAAK,EAAE,MAAM,EAAE,MAAM,EAAE,MAAM,EAAE,IAAI,EAAE,KAAK,EAAE,KAAK,EAAE,KAAK,EAC7D,KAAK,EAAE,OAAO,EAAE,eAAe,EAC/B,QAAQ,EAAE,eAAe,EAAE,iBAAiB,EAC5C,IAAI,EAAE,UAAU,EAAE,eAAe,EAAE,eAAe,EAAE,cAAc,EAClE,SAAS,EAAE,eAAe,EAAE,oBAAoB,EAAE,oBAAoB,EAAE,mBAAmB,EAC3F,KAAK,EAAE,UAAU,EAAE,WAAW,EACjC,MAAM,YAAY,CAAC;AAEpB,cAAc;AACd,MAAM,WAAW,UAAW,SAAQ,OAAO;IACvC,KAAK,CAAC,CAAC,SAAS,QAAQ,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IAClF,SAAS,CAAC,CAAC,SAAS,QAAQ,EAAE,KAAK,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,EAAE,OAAO,EAAE,MAAM,EAAE,EAAE,MAAM,EAAE,CAAC,CAAC,QAAQ,CAAC,EAAE,GAAG,IAAI,EAAE,CAAC;IAClG,UAAU,CAAC,CAAC,SAAS,QAAQ,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,GAAG,CAAC,GAAG,CAAC,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,IAAI,CAAC,CAAC,CAAC,CAAC,QAAQ,CAAC,KAAK,IAAI,CAAC;IACpH,UAAU,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,CAAC,GAAG,CAAC,IAAI,EAAE,IAAI,CAAC,cAAc,CAAC,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,cAAc,CAAC,CAAC,CAAC,CAAC,QAAQ,CAAC,KAAK,IAAI,CAAC;IAChI,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IAClF,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IAClF,QAAQ,CAAC,CAAC,SAAS,GAAG,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IAChF,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IAClF,UAAU,CAAC,CAAC,SAAS,KAAK,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IACpF,UAAU,CAAC,CAAC,SAAS,KAAK,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IACpF,UAAU,CAAC,CAAC,SAAS,KAAK,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IACpF,UAAU,CAAC,CAAC,SAAS,KAAK,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IACpF,WAAW,CAAC,CAAC,SAAS,MAAM,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IACtF,WAAW,CAAC,CAAC,SAAS,MAAM,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IACtF,WAAW,CAAC,CAAC,SAAS,MAAM,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IACtF,UAAU,CAAC,CAAC,SAAS,KAAK,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IACpF,YAAY,CAAC,CAAC,SAAS,OAAO,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IACxF,YAAY,CAAC,CAAC,SAAS,OAAO,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IACxF,YAAY,CAAC,CAAC,SAAS,OAAO,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IACxF,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IAClF,WAAW,CAAC,CAAC,SAAS,MAAM,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IACtF,oBAAoB,CAAC,CAAC,SAAS,eAAe,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IACxG,SAAS,CAAC,CAAC,SAAS,KAAK,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IACnF,YAAY,CAAC,CAAC,SAAS,OAAO,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IACxF,oBAAoB,CAAC,CAAC,SAAS,eAAe,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IACxG,cAAc,CAAC,CAAC,SAAS,SAAS,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IAC5F,oBAAoB,CAAC,CAAC,SAAS,eAAe,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IACxG,yBAAyB,CAAC,CAAC,SAAS,oBAAoB,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IAClH,yBAAyB,CAAC,CAAC,SAAS,oBAAoB,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;IAClH,wBAAwB,CAAC,CAAC,SAAS,mBAAmB,EAAE,IAAI,EAAE,IAAI,CAAC,CAAC,CAAC,EAAE,KAAK,EAAE,MAAM,EAAE,KAAK,EAAE,CAAC,CAAC,QAAQ,CAAC,GAAG,IAAI,CAAC;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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/set.js b/igv_component/node_modules/apache-arrow/visitor/set.js
new file mode 100644
index 0000000000000000000000000000000000000000..dcc01e99a2a051a3def46d6fbf3bb5b3a4ce0764
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/set.js
@@ -0,0 +1,306 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.instance = exports.setIntervalYearMonth = exports.setIntervalDayTime = exports.setIntervalValue = exports.setDecimal = exports.setTime = exports.setTimeNanosecond = exports.setTimeMicrosecond = exports.setTimeMillisecond = exports.setTimeSecond = exports.setTimestamp = exports.setTimestampNanosecond = exports.setTimestampMicrosecond = exports.setTimestampMillisecond = exports.setTimestampSecond = exports.setDate = exports.setFixedSizeBinary = exports.setDateMillisecond = exports.setDateDay = exports.setAnyFloat = exports.setFloat16 = exports.setFloat = exports.setInt = exports.setVariableWidthBytes = exports.setEpochMsToNanosecondsLong = exports.setEpochMsToMicrosecondsLong = exports.setEpochMsToMillisecondsLong = exports.setEpochMsToDays = exports.SetVisitor = void 0;
+const vector_js_1 = require("../vector.js");
+const visitor_js_1 = require("../visitor.js");
+const utf8_js_1 = require("../util/utf8.js");
+const math_js_1 = require("../util/math.js");
+const enum_js_1 = require("../enum.js");
+/** @ignore */
+class SetVisitor extends visitor_js_1.Visitor {
+}
+exports.SetVisitor = SetVisitor;
+/** @ignore */
+function wrapSet(fn) {
+    return (data, _1, _2) => {
+        if (data.setValid(_1, _2 != null)) {
+            return fn(data, _1, _2);
+        }
+    };
+}
+/** @ignore */
+const setEpochMsToDays = (data, index, epochMs) => { data[index] = Math.trunc(epochMs / 86400000); };
+exports.setEpochMsToDays = setEpochMsToDays;
+/** @ignore */
+const setEpochMsToMillisecondsLong = (data, index, epochMs) => {
+    data[index] = Math.trunc(epochMs % 4294967296);
+    data[index + 1] = Math.trunc(epochMs / 4294967296);
+};
+exports.setEpochMsToMillisecondsLong = setEpochMsToMillisecondsLong;
+/** @ignore */
+const setEpochMsToMicrosecondsLong = (data, index, epochMs) => {
+    data[index] = Math.trunc((epochMs * 1000) % 4294967296);
+    data[index + 1] = Math.trunc((epochMs * 1000) / 4294967296);
+};
+exports.setEpochMsToMicrosecondsLong = setEpochMsToMicrosecondsLong;
+/** @ignore */
+const setEpochMsToNanosecondsLong = (data, index, epochMs) => {
+    data[index] = Math.trunc((epochMs * 1000000) % 4294967296);
+    data[index + 1] = Math.trunc((epochMs * 1000000) / 4294967296);
+};
+exports.setEpochMsToNanosecondsLong = setEpochMsToNanosecondsLong;
+/** @ignore */
+const setVariableWidthBytes = (values, valueOffsets, index, value) => {
+    if (index + 1 < valueOffsets.length) {
+        const { [index]: x, [index + 1]: y } = valueOffsets;
+        values.set(value.subarray(0, y - x), x);
+    }
+};
+exports.setVariableWidthBytes = setVariableWidthBytes;
+/** @ignore */
+const setBool = ({ offset, values }, index, val) => {
+    const idx = offset + index;
+    val ? (values[idx >> 3] |= (1 << (idx % 8))) // true
+        : (values[idx >> 3] &= ~(1 << (idx % 8))); // false
+};
+/** @ignore */
+const setInt = ({ values }, index, value) => { values[index] = value; };
+exports.setInt = setInt;
+/** @ignore */
+const setFloat = ({ values }, index, value) => { values[index] = value; };
+exports.setFloat = setFloat;
+/** @ignore */
+const setFloat16 = ({ values }, index, value) => { values[index] = (0, math_js_1.float64ToUint16)(value); };
+exports.setFloat16 = setFloat16;
+/* istanbul ignore next */
+/** @ignore */
+const setAnyFloat = (data, index, value) => {
+    switch (data.type.precision) {
+        case enum_js_1.Precision.HALF:
+            return (0, exports.setFloat16)(data, index, value);
+        case enum_js_1.Precision.SINGLE:
+        case enum_js_1.Precision.DOUBLE:
+            return (0, exports.setFloat)(data, index, value);
+    }
+};
+exports.setAnyFloat = setAnyFloat;
+/** @ignore */
+const setDateDay = ({ values }, index, value) => { (0, exports.setEpochMsToDays)(values, index, value.valueOf()); };
+exports.setDateDay = setDateDay;
+/** @ignore */
+const setDateMillisecond = ({ values }, index, value) => { (0, exports.setEpochMsToMillisecondsLong)(values, index * 2, value.valueOf()); };
+exports.setDateMillisecond = setDateMillisecond;
+/** @ignore */
+const setFixedSizeBinary = ({ stride, values }, index, value) => { values.set(value.subarray(0, stride), stride * index); };
+exports.setFixedSizeBinary = setFixedSizeBinary;
+/** @ignore */
+const setBinary = ({ values, valueOffsets }, index, value) => (0, exports.setVariableWidthBytes)(values, valueOffsets, index, value);
+/** @ignore */
+const setUtf8 = ({ values, valueOffsets }, index, value) => {
+    (0, exports.setVariableWidthBytes)(values, valueOffsets, index, (0, utf8_js_1.encodeUtf8)(value));
+};
+/* istanbul ignore next */
+const setDate = (data, index, value) => {
+    data.type.unit === enum_js_1.DateUnit.DAY
+        ? (0, exports.setDateDay)(data, index, value)
+        : (0, exports.setDateMillisecond)(data, index, value);
+};
+exports.setDate = setDate;
+/** @ignore */
+const setTimestampSecond = ({ values }, index, value) => (0, exports.setEpochMsToMillisecondsLong)(values, index * 2, value / 1000);
+exports.setTimestampSecond = setTimestampSecond;
+/** @ignore */
+const setTimestampMillisecond = ({ values }, index, value) => (0, exports.setEpochMsToMillisecondsLong)(values, index * 2, value);
+exports.setTimestampMillisecond = setTimestampMillisecond;
+/** @ignore */
+const setTimestampMicrosecond = ({ values }, index, value) => (0, exports.setEpochMsToMicrosecondsLong)(values, index * 2, value);
+exports.setTimestampMicrosecond = setTimestampMicrosecond;
+/** @ignore */
+const setTimestampNanosecond = ({ values }, index, value) => (0, exports.setEpochMsToNanosecondsLong)(values, index * 2, value);
+exports.setTimestampNanosecond = setTimestampNanosecond;
+/* istanbul ignore next */
+/** @ignore */
+const setTimestamp = (data, index, value) => {
+    switch (data.type.unit) {
+        case enum_js_1.TimeUnit.SECOND: return (0, exports.setTimestampSecond)(data, index, value);
+        case enum_js_1.TimeUnit.MILLISECOND: return (0, exports.setTimestampMillisecond)(data, index, value);
+        case enum_js_1.TimeUnit.MICROSECOND: return (0, exports.setTimestampMicrosecond)(data, index, value);
+        case enum_js_1.TimeUnit.NANOSECOND: return (0, exports.setTimestampNanosecond)(data, index, value);
+    }
+};
+exports.setTimestamp = setTimestamp;
+/** @ignore */
+const setTimeSecond = ({ values }, index, value) => { values[index] = value; };
+exports.setTimeSecond = setTimeSecond;
+/** @ignore */
+const setTimeMillisecond = ({ values }, index, value) => { values[index] = value; };
+exports.setTimeMillisecond = setTimeMillisecond;
+/** @ignore */
+const setTimeMicrosecond = ({ values }, index, value) => { values[index] = value; };
+exports.setTimeMicrosecond = setTimeMicrosecond;
+/** @ignore */
+const setTimeNanosecond = ({ values }, index, value) => { values[index] = value; };
+exports.setTimeNanosecond = setTimeNanosecond;
+/* istanbul ignore next */
+/** @ignore */
+const setTime = (data, index, value) => {
+    switch (data.type.unit) {
+        case enum_js_1.TimeUnit.SECOND: return (0, exports.setTimeSecond)(data, index, value);
+        case enum_js_1.TimeUnit.MILLISECOND: return (0, exports.setTimeMillisecond)(data, index, value);
+        case enum_js_1.TimeUnit.MICROSECOND: return (0, exports.setTimeMicrosecond)(data, index, value);
+        case enum_js_1.TimeUnit.NANOSECOND: return (0, exports.setTimeNanosecond)(data, index, value);
+    }
+};
+exports.setTime = setTime;
+/** @ignore */
+const setDecimal = ({ values, stride }, index, value) => { values.set(value.subarray(0, stride), stride * index); };
+exports.setDecimal = setDecimal;
+/** @ignore */
+const setList = (data, index, value) => {
+    const values = data.children[0];
+    const valueOffsets = data.valueOffsets;
+    const set = exports.instance.getVisitFn(values);
+    if (Array.isArray(value)) {
+        for (let idx = -1, itr = valueOffsets[index], end = valueOffsets[index + 1]; itr < end;) {
+            set(values, itr++, value[++idx]);
+        }
+    }
+    else {
+        for (let idx = -1, itr = valueOffsets[index], end = valueOffsets[index + 1]; itr < end;) {
+            set(values, itr++, value.get(++idx));
+        }
+    }
+};
+/** @ignore */
+const setMap = (data, index, value) => {
+    const values = data.children[0];
+    const { valueOffsets } = data;
+    const set = exports.instance.getVisitFn(values);
+    let { [index]: idx, [index + 1]: end } = valueOffsets;
+    const entries = value instanceof Map ? value.entries() : Object.entries(value);
+    for (const val of entries) {
+        set(values, idx, val);
+        if (++idx >= end)
+            break;
+    }
+};
+/** @ignore */ const _setStructArrayValue = (o, v) => (set, c, _, i) => c && set(c, o, v[i]);
+/** @ignore */ const _setStructVectorValue = (o, v) => (set, c, _, i) => c && set(c, o, v.get(i));
+/** @ignore */ const _setStructMapValue = (o, v) => (set, c, f, _) => c && set(c, o, v.get(f.name));
+/** @ignore */ const _setStructObjectValue = (o, v) => (set, c, f, _) => c && set(c, o, v[f.name]);
+/** @ignore */
+const setStruct = (data, index, value) => {
+    const childSetters = data.type.children.map((f) => exports.instance.getVisitFn(f.type));
+    const set = value instanceof Map ? _setStructMapValue(index, value) :
+        value instanceof vector_js_1.Vector ? _setStructVectorValue(index, value) :
+            Array.isArray(value) ? _setStructArrayValue(index, value) :
+                _setStructObjectValue(index, value);
+    // eslint-disable-next-line unicorn/no-array-for-each
+    data.type.children.forEach((f, i) => set(childSetters[i], data.children[i], f, i));
+};
+/* istanbul ignore next */
+/** @ignore */
+const setUnion = (data, index, value) => {
+    data.type.mode === enum_js_1.UnionMode.Dense ?
+        setDenseUnion(data, index, value) :
+        setSparseUnion(data, index, value);
+};
+/** @ignore */
+const setDenseUnion = (data, index, value) => {
+    const childIndex = data.type.typeIdToChildIndex[data.typeIds[index]];
+    const child = data.children[childIndex];
+    exports.instance.visit(child, data.valueOffsets[index], value);
+};
+/** @ignore */
+const setSparseUnion = (data, index, value) => {
+    const childIndex = data.type.typeIdToChildIndex[data.typeIds[index]];
+    const child = data.children[childIndex];
+    exports.instance.visit(child, index, value);
+};
+/** @ignore */
+const setDictionary = (data, index, value) => {
+    var _a;
+    (_a = data.dictionary) === null || _a === void 0 ? void 0 : _a.set(data.values[index], value);
+};
+/* istanbul ignore next */
+/** @ignore */
+const setIntervalValue = (data, index, value) => {
+    (data.type.unit === enum_js_1.IntervalUnit.DAY_TIME)
+        ? (0, exports.setIntervalDayTime)(data, index, value)
+        : (0, exports.setIntervalYearMonth)(data, index, value);
+};
+exports.setIntervalValue = setIntervalValue;
+/** @ignore */
+const setIntervalDayTime = ({ values }, index, value) => { values.set(value.subarray(0, 2), 2 * index); };
+exports.setIntervalDayTime = setIntervalDayTime;
+/** @ignore */
+const setIntervalYearMonth = ({ values }, index, value) => { values[index] = (value[0] * 12) + (value[1] % 12); };
+exports.setIntervalYearMonth = setIntervalYearMonth;
+/** @ignore */
+const setFixedSizeList = (data, index, value) => {
+    const { stride } = data;
+    const child = data.children[0];
+    const set = exports.instance.getVisitFn(child);
+    if (Array.isArray(value)) {
+        for (let idx = -1, offset = index * stride; ++idx < stride;) {
+            set(child, offset + idx, value[idx]);
+        }
+    }
+    else {
+        for (let idx = -1, offset = index * stride; ++idx < stride;) {
+            set(child, offset + idx, value.get(idx));
+        }
+    }
+};
+SetVisitor.prototype.visitBool = wrapSet(setBool);
+SetVisitor.prototype.visitInt = wrapSet(exports.setInt);
+SetVisitor.prototype.visitInt8 = wrapSet(exports.setInt);
+SetVisitor.prototype.visitInt16 = wrapSet(exports.setInt);
+SetVisitor.prototype.visitInt32 = wrapSet(exports.setInt);
+SetVisitor.prototype.visitInt64 = wrapSet(exports.setInt);
+SetVisitor.prototype.visitUint8 = wrapSet(exports.setInt);
+SetVisitor.prototype.visitUint16 = wrapSet(exports.setInt);
+SetVisitor.prototype.visitUint32 = wrapSet(exports.setInt);
+SetVisitor.prototype.visitUint64 = wrapSet(exports.setInt);
+SetVisitor.prototype.visitFloat = wrapSet(exports.setAnyFloat);
+SetVisitor.prototype.visitFloat16 = wrapSet(exports.setFloat16);
+SetVisitor.prototype.visitFloat32 = wrapSet(exports.setFloat);
+SetVisitor.prototype.visitFloat64 = wrapSet(exports.setFloat);
+SetVisitor.prototype.visitUtf8 = wrapSet(setUtf8);
+SetVisitor.prototype.visitBinary = wrapSet(setBinary);
+SetVisitor.prototype.visitFixedSizeBinary = wrapSet(exports.setFixedSizeBinary);
+SetVisitor.prototype.visitDate = wrapSet(exports.setDate);
+SetVisitor.prototype.visitDateDay = wrapSet(exports.setDateDay);
+SetVisitor.prototype.visitDateMillisecond = wrapSet(exports.setDateMillisecond);
+SetVisitor.prototype.visitTimestamp = wrapSet(exports.setTimestamp);
+SetVisitor.prototype.visitTimestampSecond = wrapSet(exports.setTimestampSecond);
+SetVisitor.prototype.visitTimestampMillisecond = wrapSet(exports.setTimestampMillisecond);
+SetVisitor.prototype.visitTimestampMicrosecond = wrapSet(exports.setTimestampMicrosecond);
+SetVisitor.prototype.visitTimestampNanosecond = wrapSet(exports.setTimestampNanosecond);
+SetVisitor.prototype.visitTime = wrapSet(exports.setTime);
+SetVisitor.prototype.visitTimeSecond = wrapSet(exports.setTimeSecond);
+SetVisitor.prototype.visitTimeMillisecond = wrapSet(exports.setTimeMillisecond);
+SetVisitor.prototype.visitTimeMicrosecond = wrapSet(exports.setTimeMicrosecond);
+SetVisitor.prototype.visitTimeNanosecond = wrapSet(exports.setTimeNanosecond);
+SetVisitor.prototype.visitDecimal = wrapSet(exports.setDecimal);
+SetVisitor.prototype.visitList = wrapSet(setList);
+SetVisitor.prototype.visitStruct = wrapSet(setStruct);
+SetVisitor.prototype.visitUnion = wrapSet(setUnion);
+SetVisitor.prototype.visitDenseUnion = wrapSet(setDenseUnion);
+SetVisitor.prototype.visitSparseUnion = wrapSet(setSparseUnion);
+SetVisitor.prototype.visitDictionary = wrapSet(setDictionary);
+SetVisitor.prototype.visitInterval = wrapSet(exports.setIntervalValue);
+SetVisitor.prototype.visitIntervalDayTime = wrapSet(exports.setIntervalDayTime);
+SetVisitor.prototype.visitIntervalYearMonth = wrapSet(exports.setIntervalYearMonth);
+SetVisitor.prototype.visitFixedSizeList = wrapSet(setFixedSizeList);
+SetVisitor.prototype.visitMap = wrapSet(setMap);
+/** @ignore */
+exports.instance = new SetVisitor();
+
+//# sourceMappingURL=set.js.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/set.js.map b/igv_component/node_modules/apache-arrow/visitor/set.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..c64133a112e98f2bbb508fded6d3dfe63615140f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/set.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/set.mjs b/igv_component/node_modules/apache-arrow/visitor/set.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..dcf00907543beaebc9f24059cef9c04b844cbc50
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/set.mjs
@@ -0,0 +1,275 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Vector } from '../vector.mjs';
+import { Visitor } from '../visitor.mjs';
+import { encodeUtf8 } from '../util/utf8.mjs';
+import { float64ToUint16 } from '../util/math.mjs';
+import { UnionMode, Precision, DateUnit, TimeUnit, IntervalUnit } from '../enum.mjs';
+/** @ignore */
+export class SetVisitor extends Visitor {
+}
+/** @ignore */
+function wrapSet(fn) {
+    return (data, _1, _2) => {
+        if (data.setValid(_1, _2 != null)) {
+            return fn(data, _1, _2);
+        }
+    };
+}
+/** @ignore */
+export const setEpochMsToDays = (data, index, epochMs) => { data[index] = Math.trunc(epochMs / 86400000); };
+/** @ignore */
+export const setEpochMsToMillisecondsLong = (data, index, epochMs) => {
+    data[index] = Math.trunc(epochMs % 4294967296);
+    data[index + 1] = Math.trunc(epochMs / 4294967296);
+};
+/** @ignore */
+export const setEpochMsToMicrosecondsLong = (data, index, epochMs) => {
+    data[index] = Math.trunc((epochMs * 1000) % 4294967296);
+    data[index + 1] = Math.trunc((epochMs * 1000) / 4294967296);
+};
+/** @ignore */
+export const setEpochMsToNanosecondsLong = (data, index, epochMs) => {
+    data[index] = Math.trunc((epochMs * 1000000) % 4294967296);
+    data[index + 1] = Math.trunc((epochMs * 1000000) / 4294967296);
+};
+/** @ignore */
+export const setVariableWidthBytes = (values, valueOffsets, index, value) => {
+    if (index + 1 < valueOffsets.length) {
+        const { [index]: x, [index + 1]: y } = valueOffsets;
+        values.set(value.subarray(0, y - x), x);
+    }
+};
+/** @ignore */
+const setBool = ({ offset, values }, index, val) => {
+    const idx = offset + index;
+    val ? (values[idx >> 3] |= (1 << (idx % 8))) // true
+        : (values[idx >> 3] &= ~(1 << (idx % 8))); // false
+};
+/** @ignore */
+export const setInt = ({ values }, index, value) => { values[index] = value; };
+/** @ignore */
+export const setFloat = ({ values }, index, value) => { values[index] = value; };
+/** @ignore */
+export const setFloat16 = ({ values }, index, value) => { values[index] = float64ToUint16(value); };
+/* istanbul ignore next */
+/** @ignore */
+export const setAnyFloat = (data, index, value) => {
+    switch (data.type.precision) {
+        case Precision.HALF:
+            return setFloat16(data, index, value);
+        case Precision.SINGLE:
+        case Precision.DOUBLE:
+            return setFloat(data, index, value);
+    }
+};
+/** @ignore */
+export const setDateDay = ({ values }, index, value) => { setEpochMsToDays(values, index, value.valueOf()); };
+/** @ignore */
+export const setDateMillisecond = ({ values }, index, value) => { setEpochMsToMillisecondsLong(values, index * 2, value.valueOf()); };
+/** @ignore */
+export const setFixedSizeBinary = ({ stride, values }, index, value) => { values.set(value.subarray(0, stride), stride * index); };
+/** @ignore */
+const setBinary = ({ values, valueOffsets }, index, value) => setVariableWidthBytes(values, valueOffsets, index, value);
+/** @ignore */
+const setUtf8 = ({ values, valueOffsets }, index, value) => {
+    setVariableWidthBytes(values, valueOffsets, index, encodeUtf8(value));
+};
+/* istanbul ignore next */
+export const setDate = (data, index, value) => {
+    data.type.unit === DateUnit.DAY
+        ? setDateDay(data, index, value)
+        : setDateMillisecond(data, index, value);
+};
+/** @ignore */
+export const setTimestampSecond = ({ values }, index, value) => setEpochMsToMillisecondsLong(values, index * 2, value / 1000);
+/** @ignore */
+export const setTimestampMillisecond = ({ values }, index, value) => setEpochMsToMillisecondsLong(values, index * 2, value);
+/** @ignore */
+export const setTimestampMicrosecond = ({ values }, index, value) => setEpochMsToMicrosecondsLong(values, index * 2, value);
+/** @ignore */
+export const setTimestampNanosecond = ({ values }, index, value) => setEpochMsToNanosecondsLong(values, index * 2, value);
+/* istanbul ignore next */
+/** @ignore */
+export const setTimestamp = (data, index, value) => {
+    switch (data.type.unit) {
+        case TimeUnit.SECOND: return setTimestampSecond(data, index, value);
+        case TimeUnit.MILLISECOND: return setTimestampMillisecond(data, index, value);
+        case TimeUnit.MICROSECOND: return setTimestampMicrosecond(data, index, value);
+        case TimeUnit.NANOSECOND: return setTimestampNanosecond(data, index, value);
+    }
+};
+/** @ignore */
+export const setTimeSecond = ({ values }, index, value) => { values[index] = value; };
+/** @ignore */
+export const setTimeMillisecond = ({ values }, index, value) => { values[index] = value; };
+/** @ignore */
+export const setTimeMicrosecond = ({ values }, index, value) => { values[index] = value; };
+/** @ignore */
+export const setTimeNanosecond = ({ values }, index, value) => { values[index] = value; };
+/* istanbul ignore next */
+/** @ignore */
+export const setTime = (data, index, value) => {
+    switch (data.type.unit) {
+        case TimeUnit.SECOND: return setTimeSecond(data, index, value);
+        case TimeUnit.MILLISECOND: return setTimeMillisecond(data, index, value);
+        case TimeUnit.MICROSECOND: return setTimeMicrosecond(data, index, value);
+        case TimeUnit.NANOSECOND: return setTimeNanosecond(data, index, value);
+    }
+};
+/** @ignore */
+export const setDecimal = ({ values, stride }, index, value) => { values.set(value.subarray(0, stride), stride * index); };
+/** @ignore */
+const setList = (data, index, value) => {
+    const values = data.children[0];
+    const valueOffsets = data.valueOffsets;
+    const set = instance.getVisitFn(values);
+    if (Array.isArray(value)) {
+        for (let idx = -1, itr = valueOffsets[index], end = valueOffsets[index + 1]; itr < end;) {
+            set(values, itr++, value[++idx]);
+        }
+    }
+    else {
+        for (let idx = -1, itr = valueOffsets[index], end = valueOffsets[index + 1]; itr < end;) {
+            set(values, itr++, value.get(++idx));
+        }
+    }
+};
+/** @ignore */
+const setMap = (data, index, value) => {
+    const values = data.children[0];
+    const { valueOffsets } = data;
+    const set = instance.getVisitFn(values);
+    let { [index]: idx, [index + 1]: end } = valueOffsets;
+    const entries = value instanceof Map ? value.entries() : Object.entries(value);
+    for (const val of entries) {
+        set(values, idx, val);
+        if (++idx >= end)
+            break;
+    }
+};
+/** @ignore */ const _setStructArrayValue = (o, v) => (set, c, _, i) => c && set(c, o, v[i]);
+/** @ignore */ const _setStructVectorValue = (o, v) => (set, c, _, i) => c && set(c, o, v.get(i));
+/** @ignore */ const _setStructMapValue = (o, v) => (set, c, f, _) => c && set(c, o, v.get(f.name));
+/** @ignore */ const _setStructObjectValue = (o, v) => (set, c, f, _) => c && set(c, o, v[f.name]);
+/** @ignore */
+const setStruct = (data, index, value) => {
+    const childSetters = data.type.children.map((f) => instance.getVisitFn(f.type));
+    const set = value instanceof Map ? _setStructMapValue(index, value) :
+        value instanceof Vector ? _setStructVectorValue(index, value) :
+            Array.isArray(value) ? _setStructArrayValue(index, value) :
+                _setStructObjectValue(index, value);
+    // eslint-disable-next-line unicorn/no-array-for-each
+    data.type.children.forEach((f, i) => set(childSetters[i], data.children[i], f, i));
+};
+/* istanbul ignore next */
+/** @ignore */
+const setUnion = (data, index, value) => {
+    data.type.mode === UnionMode.Dense ?
+        setDenseUnion(data, index, value) :
+        setSparseUnion(data, index, value);
+};
+/** @ignore */
+const setDenseUnion = (data, index, value) => {
+    const childIndex = data.type.typeIdToChildIndex[data.typeIds[index]];
+    const child = data.children[childIndex];
+    instance.visit(child, data.valueOffsets[index], value);
+};
+/** @ignore */
+const setSparseUnion = (data, index, value) => {
+    const childIndex = data.type.typeIdToChildIndex[data.typeIds[index]];
+    const child = data.children[childIndex];
+    instance.visit(child, index, value);
+};
+/** @ignore */
+const setDictionary = (data, index, value) => {
+    var _a;
+    (_a = data.dictionary) === null || _a === void 0 ? void 0 : _a.set(data.values[index], value);
+};
+/* istanbul ignore next */
+/** @ignore */
+export const setIntervalValue = (data, index, value) => {
+    (data.type.unit === IntervalUnit.DAY_TIME)
+        ? setIntervalDayTime(data, index, value)
+        : setIntervalYearMonth(data, index, value);
+};
+/** @ignore */
+export const setIntervalDayTime = ({ values }, index, value) => { values.set(value.subarray(0, 2), 2 * index); };
+/** @ignore */
+export const setIntervalYearMonth = ({ values }, index, value) => { values[index] = (value[0] * 12) + (value[1] % 12); };
+/** @ignore */
+const setFixedSizeList = (data, index, value) => {
+    const { stride } = data;
+    const child = data.children[0];
+    const set = instance.getVisitFn(child);
+    if (Array.isArray(value)) {
+        for (let idx = -1, offset = index * stride; ++idx < stride;) {
+            set(child, offset + idx, value[idx]);
+        }
+    }
+    else {
+        for (let idx = -1, offset = index * stride; ++idx < stride;) {
+            set(child, offset + idx, value.get(idx));
+        }
+    }
+};
+SetVisitor.prototype.visitBool = wrapSet(setBool);
+SetVisitor.prototype.visitInt = wrapSet(setInt);
+SetVisitor.prototype.visitInt8 = wrapSet(setInt);
+SetVisitor.prototype.visitInt16 = wrapSet(setInt);
+SetVisitor.prototype.visitInt32 = wrapSet(setInt);
+SetVisitor.prototype.visitInt64 = wrapSet(setInt);
+SetVisitor.prototype.visitUint8 = wrapSet(setInt);
+SetVisitor.prototype.visitUint16 = wrapSet(setInt);
+SetVisitor.prototype.visitUint32 = wrapSet(setInt);
+SetVisitor.prototype.visitUint64 = wrapSet(setInt);
+SetVisitor.prototype.visitFloat = wrapSet(setAnyFloat);
+SetVisitor.prototype.visitFloat16 = wrapSet(setFloat16);
+SetVisitor.prototype.visitFloat32 = wrapSet(setFloat);
+SetVisitor.prototype.visitFloat64 = wrapSet(setFloat);
+SetVisitor.prototype.visitUtf8 = wrapSet(setUtf8);
+SetVisitor.prototype.visitBinary = wrapSet(setBinary);
+SetVisitor.prototype.visitFixedSizeBinary = wrapSet(setFixedSizeBinary);
+SetVisitor.prototype.visitDate = wrapSet(setDate);
+SetVisitor.prototype.visitDateDay = wrapSet(setDateDay);
+SetVisitor.prototype.visitDateMillisecond = wrapSet(setDateMillisecond);
+SetVisitor.prototype.visitTimestamp = wrapSet(setTimestamp);
+SetVisitor.prototype.visitTimestampSecond = wrapSet(setTimestampSecond);
+SetVisitor.prototype.visitTimestampMillisecond = wrapSet(setTimestampMillisecond);
+SetVisitor.prototype.visitTimestampMicrosecond = wrapSet(setTimestampMicrosecond);
+SetVisitor.prototype.visitTimestampNanosecond = wrapSet(setTimestampNanosecond);
+SetVisitor.prototype.visitTime = wrapSet(setTime);
+SetVisitor.prototype.visitTimeSecond = wrapSet(setTimeSecond);
+SetVisitor.prototype.visitTimeMillisecond = wrapSet(setTimeMillisecond);
+SetVisitor.prototype.visitTimeMicrosecond = wrapSet(setTimeMicrosecond);
+SetVisitor.prototype.visitTimeNanosecond = wrapSet(setTimeNanosecond);
+SetVisitor.prototype.visitDecimal = wrapSet(setDecimal);
+SetVisitor.prototype.visitList = wrapSet(setList);
+SetVisitor.prototype.visitStruct = wrapSet(setStruct);
+SetVisitor.prototype.visitUnion = wrapSet(setUnion);
+SetVisitor.prototype.visitDenseUnion = wrapSet(setDenseUnion);
+SetVisitor.prototype.visitSparseUnion = wrapSet(setSparseUnion);
+SetVisitor.prototype.visitDictionary = wrapSet(setDictionary);
+SetVisitor.prototype.visitInterval = wrapSet(setIntervalValue);
+SetVisitor.prototype.visitIntervalDayTime = wrapSet(setIntervalDayTime);
+SetVisitor.prototype.visitIntervalYearMonth = wrapSet(setIntervalYearMonth);
+SetVisitor.prototype.visitFixedSizeList = wrapSet(setFixedSizeList);
+SetVisitor.prototype.visitMap = wrapSet(setMap);
+/** @ignore */
+export const instance = new SetVisitor();
+
+//# sourceMappingURL=set.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/set.mjs.map b/igv_component/node_modules/apache-arrow/visitor/set.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..ec7b98617c0a499385b91dba8990f5004b58a0ef
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/set.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/typeassembler.d.ts b/igv_component/node_modules/apache-arrow/visitor/typeassembler.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..cffcf028d7fad813021bd830c1bd52a1af460194
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typeassembler.d.ts
@@ -0,0 +1,31 @@
+import * as flatbuffers from 'flatbuffers';
+import Builder = flatbuffers.Builder;
+import * as type from '../type.js';
+import { Visitor } from '../visitor.js';
+/** @ignore */
+export interface TypeAssembler extends Visitor {
+    visit<T extends type.DataType>(node: T, builder: Builder): number | undefined;
+}
+/** @ignore */
+export declare class TypeAssembler extends Visitor {
+    visitNull<T extends type.Null>(_node: T, b: Builder): number;
+    visitInt<T extends type.Int>(node: T, b: Builder): number;
+    visitFloat<T extends type.Float>(node: T, b: Builder): number;
+    visitBinary<T extends type.Binary>(_node: T, b: Builder): number;
+    visitBool<T extends type.Bool>(_node: T, b: Builder): number;
+    visitUtf8<T extends type.Utf8>(_node: T, b: Builder): number;
+    visitDecimal<T extends type.Decimal>(node: T, b: Builder): number;
+    visitDate<T extends type.Date_>(node: T, b: Builder): number;
+    visitTime<T extends type.Time>(node: T, b: Builder): number;
+    visitTimestamp<T extends type.Timestamp>(node: T, b: Builder): number;
+    visitInterval<T extends type.Interval>(node: T, b: Builder): number;
+    visitList<T extends type.List>(_node: T, b: Builder): number;
+    visitStruct<T extends type.Struct>(_node: T, b: Builder): number;
+    visitUnion<T extends type.Union>(node: T, b: Builder): number;
+    visitDictionary<T extends type.Dictionary>(node: T, b: Builder): number;
+    visitFixedSizeBinary<T extends type.FixedSizeBinary>(node: T, b: Builder): number;
+    visitFixedSizeList<T extends type.FixedSizeList>(node: T, b: Builder): number;
+    visitMap<T extends type.Map_>(node: T, b: Builder): number;
+}
+/** @ignore */
+export declare const instance: TypeAssembler;
diff --git a/igv_component/node_modules/apache-arrow/visitor/typeassembler.d.ts.map b/igv_component/node_modules/apache-arrow/visitor/typeassembler.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..349a89f3d86095f7f336ad08f433151da6886115
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typeassembler.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/typeassembler.ts"],"names":[],"mappings":"AAiBA,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAE3C,OAAO,OAAO,GAAG,WAAW,CAAC,OAAO,CAAC;AAErC,OAAO,KAAK,IAAI,MAAM,YAAY,CAAC;AACnC,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AAqBxC,cAAc;AACd,MAAM,WAAW,aAAc,SAAQ,OAAO;IAC1C,KAAK,CAAC,CAAC,SAAS,IAAI,CAAC,QAAQ,EAAE,IAAI,EAAE,CAAC,EAAE,OAAO,EAAE,OAAO,GAAG,MAAM,GAAG,SAAS,CAAC;CACjF;AAED,cAAc;AACd,qBAAa,aAAc,SAAQ,OAAO;IAI/B,SAAS,CAAC,CAAC,SAAS,IAAI,CAAC,IAAI,EAAE,KAAK,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;IAInD,QAAQ,CAAC,CAAC,SAAS,IAAI,CAAC,GAAG,EAAE,IAAI,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;IAMhD,UAAU,CAAC,CAAC,SAAS,IAAI,CAAC,KAAK,EAAE,IAAI,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;IAKpD,WAAW,CAAC,CAAC,SAAS,IAAI,CAAC,MAAM,EAAE,KAAK,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;IAIvD,SAAS,CAAC,CAAC,SAAS,IAAI,CAAC,IAAI,EAAE,KAAK,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;IAInD,SAAS,CAAC,CAAC,SAAS,IAAI,CAAC,IAAI,EAAE,KAAK,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;IAInD,YAAY,CAAC,CAAC,SAAS,IAAI,CAAC,OAAO,EAAE,IAAI,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;IAOxD,SAAS,CAAC,CAAC,SAAS,IAAI,CAAC,KAAK,EAAE,IAAI,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;IAKnD,SAAS,CAAC,CAAC,SAAS,IAAI,CAAC,IAAI,EAAE,IAAI,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;IAMlD,cAAc,CAAC,CAAC,SAAS,IAAI,CAAC,SAAS,EAAE,IAAI,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;IAS5D,aAAa,CAAC,CAAC,SAAS,IAAI,CAAC,QAAQ,EAAE,IAAI,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;IAK1D,SAAS,CAAC,CAAC,SAAS,IAAI,CAAC,IAAI,EAAE,KAAK,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;IAInD,WAAW,CAAC,CAAC,SAAS,IAAI,CAAC,MAAM,EAAE,KAAK,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;IAIvD,UAAU,CAAC,CAAC,SAAS,IAAI,CAAC,KAAK,EAAE,IAAI,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;IAQpD,eAAe,CAAC,CAAC,SAAS,IAAI,CAAC,UAAU,EAAE,IAAI,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;IAU9D,oBAAoB,CAAC,CAAC,SAAS,IAAI,CAAC,eAAe,EAAE,IAAI,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;IAKxE,kBAAkB,CAAC,CAAC,SAAS,IAAI,CAAC,aAAa,EAAE,IAAI,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;IAKpE,QAAQ,CAAC,CAAC,SAAS,IAAI,CAAC,IAAI,EAAE,IAAI,EAAE,CAAC,EAAE,CAAC,EAAE,OAAO;CAK3D;AAED,cAAc;AACd,eAAO,MAAM,QAAQ,eAAsB,CAAC","file":"typeassembler.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/typeassembler.js b/igv_component/node_modules/apache-arrow/visitor/typeassembler.js
new file mode 100644
index 0000000000000000000000000000000000000000..d1c49fca2e17fbc88a30c3e1f77b6d37e7beef7e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typeassembler.js
@@ -0,0 +1,152 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.instance = exports.TypeAssembler = void 0;
+const tslib_1 = require("tslib");
+const flatbuffers = tslib_1.__importStar(require("flatbuffers"));
+var Long = flatbuffers.Long;
+const visitor_js_1 = require("../visitor.js");
+const null_js_1 = require("../fb/null.js");
+const int_js_1 = require("../fb/int.js");
+const floating_point_js_1 = require("../fb/floating-point.js");
+const binary_js_1 = require("../fb/binary.js");
+const bool_js_1 = require("../fb/bool.js");
+const utf8_js_1 = require("../fb/utf8.js");
+const decimal_js_1 = require("../fb/decimal.js");
+const date_js_1 = require("../fb/date.js");
+const time_js_1 = require("../fb/time.js");
+const timestamp_js_1 = require("../fb/timestamp.js");
+const interval_js_1 = require("../fb/interval.js");
+const list_js_1 = require("../fb/list.js");
+const struct__js_1 = require("../fb/struct_.js");
+const union_js_1 = require("../fb/union.js");
+const dictionary_encoding_js_1 = require("../fb/dictionary-encoding.js");
+const fixed_size_binary_js_1 = require("../fb/fixed-size-binary.js");
+const fixed_size_list_js_1 = require("../fb/fixed-size-list.js");
+const map_js_1 = require("../fb/map.js");
+/** @ignore */
+class TypeAssembler extends visitor_js_1.Visitor {
+    visit(node, builder) {
+        return (node == null || builder == null) ? undefined : super.visit(node, builder);
+    }
+    visitNull(_node, b) {
+        null_js_1.Null.startNull(b);
+        return null_js_1.Null.endNull(b);
+    }
+    visitInt(node, b) {
+        int_js_1.Int.startInt(b);
+        int_js_1.Int.addBitWidth(b, node.bitWidth);
+        int_js_1.Int.addIsSigned(b, node.isSigned);
+        return int_js_1.Int.endInt(b);
+    }
+    visitFloat(node, b) {
+        floating_point_js_1.FloatingPoint.startFloatingPoint(b);
+        floating_point_js_1.FloatingPoint.addPrecision(b, node.precision);
+        return floating_point_js_1.FloatingPoint.endFloatingPoint(b);
+    }
+    visitBinary(_node, b) {
+        binary_js_1.Binary.startBinary(b);
+        return binary_js_1.Binary.endBinary(b);
+    }
+    visitBool(_node, b) {
+        bool_js_1.Bool.startBool(b);
+        return bool_js_1.Bool.endBool(b);
+    }
+    visitUtf8(_node, b) {
+        utf8_js_1.Utf8.startUtf8(b);
+        return utf8_js_1.Utf8.endUtf8(b);
+    }
+    visitDecimal(node, b) {
+        decimal_js_1.Decimal.startDecimal(b);
+        decimal_js_1.Decimal.addScale(b, node.scale);
+        decimal_js_1.Decimal.addPrecision(b, node.precision);
+        decimal_js_1.Decimal.addBitWidth(b, node.bitWidth);
+        return decimal_js_1.Decimal.endDecimal(b);
+    }
+    visitDate(node, b) {
+        date_js_1.Date.startDate(b);
+        date_js_1.Date.addUnit(b, node.unit);
+        return date_js_1.Date.endDate(b);
+    }
+    visitTime(node, b) {
+        time_js_1.Time.startTime(b);
+        time_js_1.Time.addUnit(b, node.unit);
+        time_js_1.Time.addBitWidth(b, node.bitWidth);
+        return time_js_1.Time.endTime(b);
+    }
+    visitTimestamp(node, b) {
+        const timezone = (node.timezone && b.createString(node.timezone)) || undefined;
+        timestamp_js_1.Timestamp.startTimestamp(b);
+        timestamp_js_1.Timestamp.addUnit(b, node.unit);
+        if (timezone !== undefined) {
+            timestamp_js_1.Timestamp.addTimezone(b, timezone);
+        }
+        return timestamp_js_1.Timestamp.endTimestamp(b);
+    }
+    visitInterval(node, b) {
+        interval_js_1.Interval.startInterval(b);
+        interval_js_1.Interval.addUnit(b, node.unit);
+        return interval_js_1.Interval.endInterval(b);
+    }
+    visitList(_node, b) {
+        list_js_1.List.startList(b);
+        return list_js_1.List.endList(b);
+    }
+    visitStruct(_node, b) {
+        struct__js_1.Struct_.startStruct_(b);
+        return struct__js_1.Struct_.endStruct_(b);
+    }
+    visitUnion(node, b) {
+        union_js_1.Union.startTypeIdsVector(b, node.typeIds.length);
+        const typeIds = union_js_1.Union.createTypeIdsVector(b, node.typeIds);
+        union_js_1.Union.startUnion(b);
+        union_js_1.Union.addMode(b, node.mode);
+        union_js_1.Union.addTypeIds(b, typeIds);
+        return union_js_1.Union.endUnion(b);
+    }
+    visitDictionary(node, b) {
+        const indexType = this.visit(node.indices, b);
+        dictionary_encoding_js_1.DictionaryEncoding.startDictionaryEncoding(b);
+        dictionary_encoding_js_1.DictionaryEncoding.addId(b, new Long(node.id, 0));
+        dictionary_encoding_js_1.DictionaryEncoding.addIsOrdered(b, node.isOrdered);
+        if (indexType !== undefined) {
+            dictionary_encoding_js_1.DictionaryEncoding.addIndexType(b, indexType);
+        }
+        return dictionary_encoding_js_1.DictionaryEncoding.endDictionaryEncoding(b);
+    }
+    visitFixedSizeBinary(node, b) {
+        fixed_size_binary_js_1.FixedSizeBinary.startFixedSizeBinary(b);
+        fixed_size_binary_js_1.FixedSizeBinary.addByteWidth(b, node.byteWidth);
+        return fixed_size_binary_js_1.FixedSizeBinary.endFixedSizeBinary(b);
+    }
+    visitFixedSizeList(node, b) {
+        fixed_size_list_js_1.FixedSizeList.startFixedSizeList(b);
+        fixed_size_list_js_1.FixedSizeList.addListSize(b, node.listSize);
+        return fixed_size_list_js_1.FixedSizeList.endFixedSizeList(b);
+    }
+    visitMap(node, b) {
+        map_js_1.Map.startMap(b);
+        map_js_1.Map.addKeysSorted(b, node.keysSorted);
+        return map_js_1.Map.endMap(b);
+    }
+}
+exports.TypeAssembler = TypeAssembler;
+/** @ignore */
+exports.instance = new TypeAssembler();
+
+//# sourceMappingURL=typeassembler.js.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/typeassembler.js.map b/igv_component/node_modules/apache-arrow/visitor/typeassembler.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..fab565fc2397f696bbe99707ab0dcdbac0a0ef8c
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typeassembler.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/typeassembler.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;;AAErB,iEAA2C;AAC3C,IAAO,IAAI,GAAG,WAAW,CAAC,IAAI,CAAC;AAI/B,8CAAwC;AAExC,2CAAqC;AACrC,yCAAmC;AACnC,+DAAwD;AACxD,+CAAyC;AACzC,2CAAqC;AACrC,2CAAqC;AACrC,iDAA2C;AAC3C,2CAAqC;AACrC,2CAAqC;AACrC,qDAA+C;AAC/C,mDAA6C;AAC7C,2CAAqC;AACrC,iDAAqD;AACrD,6CAAuC;AACvC,yEAAkE;AAClE,qEAA6D;AAC7D,iEAAyD;AACzD,yCAA2C;AAO3C,cAAc;AACd,MAAa,aAAc,SAAQ,oBAAO;IAC/B,KAAK,CAA0B,IAAO,EAAE,OAAgB;QAC3D,OAAO,CAAC,IAAI,IAAI,IAAI,IAAI,OAAO,IAAI,IAAI,CAAC,CAAC,CAAC,CAAC,SAAS,CAAC,CAAC,CAAC,KAAK,CAAC,KAAK,CAAC,IAAI,EAAE,OAAO,CAAC,CAAC;IACtF,CAAC;IACM,SAAS,CAAsB,KAAQ,EAAE,CAAU;QACtD,cAAI,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC;QAClB,OAAO,cAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC;IAC3B,CAAC;IACM,QAAQ,CAAqB,IAAO,EAAE,CAAU;QACnD,YAAG,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC;QAChB,YAAG,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,QAAQ,CAAC,CAAC;QAClC,YAAG,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,QAAQ,CAAC,CAAC;QAClC,OAAO,YAAG,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IACM,UAAU,CAAuB,IAAO,EAAE,CAAU;QACvD,iCAAa,CAAC,kBAAkB,CAAC,CAAC,CAAC,CAAC;QACpC,iCAAa,CAAC,YAAY,CAAC,CAAC,EAAE,IAAI,CAAC,SAAS,CAAC,CAAC;QAC9C,OAAO,iCAAa,CAAC,gBAAgB,CAAC,CAAC,CAAC,CAAC;IAC7C,CAAC;IACM,WAAW,CAAwB,KAAQ,EAAE,CAAU;QAC1D,kBAAM,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;QACtB,OAAO,kBAAM,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC;IAC/B,CAAC;IACM,SAAS,CAAsB,KAAQ,EAAE,CAAU;QACtD,cAAI,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC;QAClB,OAAO,cAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC;IAC3B,CAAC;IACM,SAAS,CAAsB,KAAQ,EAAE,CAAU;QACtD,cAAI,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC;QAClB,OAAO,cAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC;IAC3B,CAAC;IACM,YAAY,CAAyB,IAAO,EAAE,CAAU;QAC3D,oBAAO,CAAC,YAAY,CAAC,CAAC,CAAC,CAAC;QACxB,oBAAO,CAAC,QAAQ,CAAC,CAAC,EAAE,IAAI,CAAC,KAAK,CAAC,CAAC;QAChC,oBAAO,CAAC,YAAY,CAAC,CAAC,EAAE,IAAI,CAAC,SAAS,CAAC,CAAC;QACxC,oBAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,QAAQ,CAAC,CAAC;QACtC,OAAO,oBAAO,CAAC,UAAU,CAAC,CAAC,CAAC,CAAC;IACjC,CAAC;IACM,SAAS,CAAuB,IAAO,EAAE,CAAU;QACtD,cAAI,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC;QAClB,cAAI,CAAC,OAAO,CAAC,CAAC,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;QAC3B,OAAO,cAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC;IAC3B,CAAC;IACM,SAAS,CAAsB,IAAO,EAAE,CAAU;QACrD,cAAI,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC;QAClB,cAAI,CAAC,OAAO,CAAC,CAAC,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;QAC3B,cAAI,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,QAAQ,CAAC,CAAC;QACnC,OAAO,cAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC;IAC3B,CAAC;IACM,cAAc,CAA2B,IAAO,EAAE,CAAU;QAC/D,MAAM,QAAQ,GAAG,CAAC,IAAI,CAAC,QAAQ,IAAI,CAAC,CAAC,YAAY,CAAC,IAAI,CAAC,QAAQ,CAAC,CAAC,IAAI,SAAS,CAAC;QAC/E,wBAAS,CAAC,cAAc,CAAC,CAAC,CAAC,CAAC;QAC5B,wBAAS,CAAC,OAAO,CAAC,CAAC,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;QAChC,IAAI,QAAQ,KAAK,SAAS,EAAE;YACxB,wBAAS,CAAC,WAAW,CAAC,CAAC,EAAE,QAAQ,CAAC,CAAC;SACtC;QACD,OAAO,wBAAS,CAAC,YAAY,CAAC,CAAC,CAAC,CAAC;IACrC,CAAC;IACM,aAAa,CAA0B,IAAO,EAAE,CAAU;QAC7D,sBAAQ,CAAC,aAAa,CAAC,CAAC,CAAC,CAAC;QAC1B,sBAAQ,CAAC,OAAO,CAAC,CAAC,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;QAC/B,OAAO,sBAAQ,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACnC,CAAC;IACM,SAAS,CAAsB,KAAQ,EAAE,CAAU;QACtD,cAAI,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC;QAClB,OAAO,cAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC;IAC3B,CAAC;IACM,WAAW,CAAwB,KAAQ,EAAE,CAAU;QAC1D,oBAAM,CAAC,YAAY,CAAC,CAAC,CAAC,CAAC;QACvB,OAAO,oBAAM,CAAC,UAAU,CAAC,CAAC,CAAC,CAAC;IAChC,CAAC;IACM,UAAU,CAAuB,IAAO,EAAE,CAAU;QACvD,gBAAK,CAAC,kBAAkB,CAAC,CAAC,EAAE,IAAI,CAAC,OAAO,CAAC,MAAM,CAAC,CAAC;QACjD,MAAM,OAAO,GAAG,gBAAK,CAAC,mBAAmB,CAAC,CAAC,EAAE,IAAI,CAAC,OAAO,CAAC,CAAC;QAC3D,gBAAK,CAAC,UAAU,CAAC,CAAC,CAAC,CAAC;QACpB,gBAAK,CAAC,OAAO,CAAC,CAAC,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;QAC5B,gBAAK,CAAC,UAAU,CAAC,CAAC,EAAE,OAAO,CAAC,CAAC;QAC7B,OAAO,gBAAK,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC;IAC7B,CAAC;IACM,eAAe,CAA4B,IAAO,EAAE,CAAU;QACjE,MAAM,SAAS,GAAG,IAAI,CAAC,KAAK,CAAC,IAAI,CAAC,OAAO,EAAE,CAAC,CAAC,CAAC;QAC9C,2CAAkB,CAAC,uBAAuB,CAAC,CAAC,CAAC,CAAC;QAC9C,2CAAkB,CAAC,KAAK,CAAC,CAAC,EAAE,IAAI,IAAI,CAAC,IAAI,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,CAAC;QAClD,2CAAkB,CAAC,YAAY,CAAC,CAAC,EAAE,IAAI,CAAC,SAAS,CAAC,CAAC;QACnD,IAAI,SAAS,KAAK,SAAS,EAAE;YACzB,2CAAkB,CAAC,YAAY,CAAC,CAAC,EAAE,SAAS,CAAC,CAAC;SACjD;QACD,OAAO,2CAAkB,CAAC,qBAAqB,CAAC,CAAC,CAAC,CAAC;IACvD,CAAC;IACM,oBAAoB,CAAiC,IAAO,EAAE,CAAU;QAC3E,sCAAe,CAAC,oBAAoB,CAAC,CAAC,CAAC,CAAC;QACxC,sCAAe,CAAC,YAAY,CAAC,CAAC,EAAE,IAAI,CAAC,SAAS,CAAC,CAAC;QAChD,OAAO,sCAAe,CAAC,kBAAkB,CAAC,CAAC,CAAC,CAAC;IACjD,CAAC;IACM,kBAAkB,CAA+B,IAAO,EAAE,CAAU;QACvE,kCAAa,CAAC,kBAAkB,CAAC,CAAC,CAAC,CAAC;QACpC,kCAAa,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,QAAQ,CAAC,CAAC;QAC5C,OAAO,kCAAa,CAAC,gBAAgB,CAAC,CAAC,CAAC,CAAC;IAC7C,CAAC;IACM,QAAQ,CAAsB,IAAO,EAAE,CAAU;QACpD,YAAI,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC;QACjB,YAAI,CAAC,aAAa,CAAC,CAAC,EAAE,IAAI,CAAC,UAAU,CAAC,CAAC;QACvC,OAAO,YAAI,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC;IAC1B,CAAC;CACJ;AAxGD,sCAwGC;AAED,cAAc;AACD,QAAA,QAAQ,GAAG,IAAI,aAAa,EAAE,CAAC","file":"typeassembler.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/typeassembler.mjs b/igv_component/node_modules/apache-arrow/visitor/typeassembler.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..68004c5e96d716c528ea61e7fbb3dac0e71ddac1
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typeassembler.mjs
@@ -0,0 +1,147 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import * as flatbuffers from 'flatbuffers';
+var Long = flatbuffers.Long;
+import { Visitor } from '../visitor.mjs';
+import { Null } from '../fb/null.mjs';
+import { Int } from '../fb/int.mjs';
+import { FloatingPoint } from '../fb/floating-point.mjs';
+import { Binary } from '../fb/binary.mjs';
+import { Bool } from '../fb/bool.mjs';
+import { Utf8 } from '../fb/utf8.mjs';
+import { Decimal } from '../fb/decimal.mjs';
+import { Date } from '../fb/date.mjs';
+import { Time } from '../fb/time.mjs';
+import { Timestamp } from '../fb/timestamp.mjs';
+import { Interval } from '../fb/interval.mjs';
+import { List } from '../fb/list.mjs';
+import { Struct_ as Struct } from '../fb/struct_.mjs';
+import { Union } from '../fb/union.mjs';
+import { DictionaryEncoding } from '../fb/dictionary-encoding.mjs';
+import { FixedSizeBinary } from '../fb/fixed-size-binary.mjs';
+import { FixedSizeList } from '../fb/fixed-size-list.mjs';
+import { Map as Map_ } from '../fb/map.mjs';
+/** @ignore */
+export class TypeAssembler extends Visitor {
+    visit(node, builder) {
+        return (node == null || builder == null) ? undefined : super.visit(node, builder);
+    }
+    visitNull(_node, b) {
+        Null.startNull(b);
+        return Null.endNull(b);
+    }
+    visitInt(node, b) {
+        Int.startInt(b);
+        Int.addBitWidth(b, node.bitWidth);
+        Int.addIsSigned(b, node.isSigned);
+        return Int.endInt(b);
+    }
+    visitFloat(node, b) {
+        FloatingPoint.startFloatingPoint(b);
+        FloatingPoint.addPrecision(b, node.precision);
+        return FloatingPoint.endFloatingPoint(b);
+    }
+    visitBinary(_node, b) {
+        Binary.startBinary(b);
+        return Binary.endBinary(b);
+    }
+    visitBool(_node, b) {
+        Bool.startBool(b);
+        return Bool.endBool(b);
+    }
+    visitUtf8(_node, b) {
+        Utf8.startUtf8(b);
+        return Utf8.endUtf8(b);
+    }
+    visitDecimal(node, b) {
+        Decimal.startDecimal(b);
+        Decimal.addScale(b, node.scale);
+        Decimal.addPrecision(b, node.precision);
+        Decimal.addBitWidth(b, node.bitWidth);
+        return Decimal.endDecimal(b);
+    }
+    visitDate(node, b) {
+        Date.startDate(b);
+        Date.addUnit(b, node.unit);
+        return Date.endDate(b);
+    }
+    visitTime(node, b) {
+        Time.startTime(b);
+        Time.addUnit(b, node.unit);
+        Time.addBitWidth(b, node.bitWidth);
+        return Time.endTime(b);
+    }
+    visitTimestamp(node, b) {
+        const timezone = (node.timezone && b.createString(node.timezone)) || undefined;
+        Timestamp.startTimestamp(b);
+        Timestamp.addUnit(b, node.unit);
+        if (timezone !== undefined) {
+            Timestamp.addTimezone(b, timezone);
+        }
+        return Timestamp.endTimestamp(b);
+    }
+    visitInterval(node, b) {
+        Interval.startInterval(b);
+        Interval.addUnit(b, node.unit);
+        return Interval.endInterval(b);
+    }
+    visitList(_node, b) {
+        List.startList(b);
+        return List.endList(b);
+    }
+    visitStruct(_node, b) {
+        Struct.startStruct_(b);
+        return Struct.endStruct_(b);
+    }
+    visitUnion(node, b) {
+        Union.startTypeIdsVector(b, node.typeIds.length);
+        const typeIds = Union.createTypeIdsVector(b, node.typeIds);
+        Union.startUnion(b);
+        Union.addMode(b, node.mode);
+        Union.addTypeIds(b, typeIds);
+        return Union.endUnion(b);
+    }
+    visitDictionary(node, b) {
+        const indexType = this.visit(node.indices, b);
+        DictionaryEncoding.startDictionaryEncoding(b);
+        DictionaryEncoding.addId(b, new Long(node.id, 0));
+        DictionaryEncoding.addIsOrdered(b, node.isOrdered);
+        if (indexType !== undefined) {
+            DictionaryEncoding.addIndexType(b, indexType);
+        }
+        return DictionaryEncoding.endDictionaryEncoding(b);
+    }
+    visitFixedSizeBinary(node, b) {
+        FixedSizeBinary.startFixedSizeBinary(b);
+        FixedSizeBinary.addByteWidth(b, node.byteWidth);
+        return FixedSizeBinary.endFixedSizeBinary(b);
+    }
+    visitFixedSizeList(node, b) {
+        FixedSizeList.startFixedSizeList(b);
+        FixedSizeList.addListSize(b, node.listSize);
+        return FixedSizeList.endFixedSizeList(b);
+    }
+    visitMap(node, b) {
+        Map_.startMap(b);
+        Map_.addKeysSorted(b, node.keysSorted);
+        return Map_.endMap(b);
+    }
+}
+/** @ignore */
+export const instance = new TypeAssembler();
+
+//# sourceMappingURL=typeassembler.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/typeassembler.mjs.map b/igv_component/node_modules/apache-arrow/visitor/typeassembler.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..e6a31b035385c3c6c4cfc4ea68ac050854c0472f
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typeassembler.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/typeassembler.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAErB,OAAO,KAAK,WAAW,MAAM,aAAa,CAAC;AAC3C,IAAO,IAAI,GAAG,WAAW,CAAC,IAAI,CAAC;AAI/B,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AAExC,OAAO,EAAE,IAAI,EAAE,MAAM,eAAe,CAAC;AACrC,OAAO,EAAE,GAAG,EAAE,MAAM,cAAc,CAAC;AACnC,OAAO,EAAE,aAAa,EAAE,MAAM,yBAAyB,CAAC;AACxD,OAAO,EAAE,MAAM,EAAE,MAAM,iBAAiB,CAAC;AACzC,OAAO,EAAE,IAAI,EAAE,MAAM,eAAe,CAAC;AACrC,OAAO,EAAE,IAAI,EAAE,MAAM,eAAe,CAAC;AACrC,OAAO,EAAE,OAAO,EAAE,MAAM,kBAAkB,CAAC;AAC3C,OAAO,EAAE,IAAI,EAAE,MAAM,eAAe,CAAC;AACrC,OAAO,EAAE,IAAI,EAAE,MAAM,eAAe,CAAC;AACrC,OAAO,EAAE,SAAS,EAAE,MAAM,oBAAoB,CAAC;AAC/C,OAAO,EAAE,QAAQ,EAAE,MAAM,mBAAmB,CAAC;AAC7C,OAAO,EAAE,IAAI,EAAE,MAAM,eAAe,CAAC;AACrC,OAAO,EAAE,OAAO,IAAI,MAAM,EAAE,MAAM,kBAAkB,CAAC;AACrD,OAAO,EAAE,KAAK,EAAE,MAAM,gBAAgB,CAAC;AACvC,OAAO,EAAE,kBAAkB,EAAE,MAAM,8BAA8B,CAAC;AAClE,OAAO,EAAE,eAAe,EAAE,MAAM,4BAA4B,CAAC;AAC7D,OAAO,EAAE,aAAa,EAAE,MAAM,0BAA0B,CAAC;AACzD,OAAO,EAAE,GAAG,IAAI,IAAI,EAAE,MAAM,cAAc,CAAC;AAO3C,cAAc;AACd,MAAM,OAAO,aAAc,SAAQ,OAAO;IAC/B,KAAK,CAA0B,IAAO,EAAE,OAAgB;QAC3D,OAAO,CAAC,IAAI,IAAI,IAAI,IAAI,OAAO,IAAI,IAAI,CAAC,CAAC,CAAC,CAAC,SAAS,CAAC,CAAC,CAAC,KAAK,CAAC,KAAK,CAAC,IAAI,EAAE,OAAO,CAAC,CAAC;IACtF,CAAC;IACM,SAAS,CAAsB,KAAQ,EAAE,CAAU;QACtD,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC;QAClB,OAAO,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC;IAC3B,CAAC;IACM,QAAQ,CAAqB,IAAO,EAAE,CAAU;QACnD,GAAG,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC;QAChB,GAAG,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,QAAQ,CAAC,CAAC;QAClC,GAAG,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,QAAQ,CAAC,CAAC;QAClC,OAAO,GAAG,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC;IACzB,CAAC;IACM,UAAU,CAAuB,IAAO,EAAE,CAAU;QACvD,aAAa,CAAC,kBAAkB,CAAC,CAAC,CAAC,CAAC;QACpC,aAAa,CAAC,YAAY,CAAC,CAAC,EAAE,IAAI,CAAC,SAAS,CAAC,CAAC;QAC9C,OAAO,aAAa,CAAC,gBAAgB,CAAC,CAAC,CAAC,CAAC;IAC7C,CAAC;IACM,WAAW,CAAwB,KAAQ,EAAE,CAAU;QAC1D,MAAM,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;QACtB,OAAO,MAAM,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC;IAC/B,CAAC;IACM,SAAS,CAAsB,KAAQ,EAAE,CAAU;QACtD,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC;QAClB,OAAO,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC;IAC3B,CAAC;IACM,SAAS,CAAsB,KAAQ,EAAE,CAAU;QACtD,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC;QAClB,OAAO,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC;IAC3B,CAAC;IACM,YAAY,CAAyB,IAAO,EAAE,CAAU;QAC3D,OAAO,CAAC,YAAY,CAAC,CAAC,CAAC,CAAC;QACxB,OAAO,CAAC,QAAQ,CAAC,CAAC,EAAE,IAAI,CAAC,KAAK,CAAC,CAAC;QAChC,OAAO,CAAC,YAAY,CAAC,CAAC,EAAE,IAAI,CAAC,SAAS,CAAC,CAAC;QACxC,OAAO,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,QAAQ,CAAC,CAAC;QACtC,OAAO,OAAO,CAAC,UAAU,CAAC,CAAC,CAAC,CAAC;IACjC,CAAC;IACM,SAAS,CAAuB,IAAO,EAAE,CAAU;QACtD,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC;QAClB,IAAI,CAAC,OAAO,CAAC,CAAC,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;QAC3B,OAAO,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC;IAC3B,CAAC;IACM,SAAS,CAAsB,IAAO,EAAE,CAAU;QACrD,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC;QAClB,IAAI,CAAC,OAAO,CAAC,CAAC,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;QAC3B,IAAI,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,QAAQ,CAAC,CAAC;QACnC,OAAO,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC;IAC3B,CAAC;IACM,cAAc,CAA2B,IAAO,EAAE,CAAU;QAC/D,MAAM,QAAQ,GAAG,CAAC,IAAI,CAAC,QAAQ,IAAI,CAAC,CAAC,YAAY,CAAC,IAAI,CAAC,QAAQ,CAAC,CAAC,IAAI,SAAS,CAAC;QAC/E,SAAS,CAAC,cAAc,CAAC,CAAC,CAAC,CAAC;QAC5B,SAAS,CAAC,OAAO,CAAC,CAAC,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;QAChC,IAAI,QAAQ,KAAK,SAAS,EAAE;YACxB,SAAS,CAAC,WAAW,CAAC,CAAC,EAAE,QAAQ,CAAC,CAAC;SACtC;QACD,OAAO,SAAS,CAAC,YAAY,CAAC,CAAC,CAAC,CAAC;IACrC,CAAC;IACM,aAAa,CAA0B,IAAO,EAAE,CAAU;QAC7D,QAAQ,CAAC,aAAa,CAAC,CAAC,CAAC,CAAC;QAC1B,QAAQ,CAAC,OAAO,CAAC,CAAC,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;QAC/B,OAAO,QAAQ,CAAC,WAAW,CAAC,CAAC,CAAC,CAAC;IACnC,CAAC;IACM,SAAS,CAAsB,KAAQ,EAAE,CAAU;QACtD,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC,CAAC;QAClB,OAAO,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC;IAC3B,CAAC;IACM,WAAW,CAAwB,KAAQ,EAAE,CAAU;QAC1D,MAAM,CAAC,YAAY,CAAC,CAAC,CAAC,CAAC;QACvB,OAAO,MAAM,CAAC,UAAU,CAAC,CAAC,CAAC,CAAC;IAChC,CAAC;IACM,UAAU,CAAuB,IAAO,EAAE,CAAU;QACvD,KAAK,CAAC,kBAAkB,CAAC,CAAC,EAAE,IAAI,CAAC,OAAO,CAAC,MAAM,CAAC,CAAC;QACjD,MAAM,OAAO,GAAG,KAAK,CAAC,mBAAmB,CAAC,CAAC,EAAE,IAAI,CAAC,OAAO,CAAC,CAAC;QAC3D,KAAK,CAAC,UAAU,CAAC,CAAC,CAAC,CAAC;QACpB,KAAK,CAAC,OAAO,CAAC,CAAC,EAAE,IAAI,CAAC,IAAI,CAAC,CAAC;QAC5B,KAAK,CAAC,UAAU,CAAC,CAAC,EAAE,OAAO,CAAC,CAAC;QAC7B,OAAO,KAAK,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC;IAC7B,CAAC;IACM,eAAe,CAA4B,IAAO,EAAE,CAAU;QACjE,MAAM,SAAS,GAAG,IAAI,CAAC,KAAK,CAAC,IAAI,CAAC,OAAO,EAAE,CAAC,CAAC,CAAC;QAC9C,kBAAkB,CAAC,uBAAuB,CAAC,CAAC,CAAC,CAAC;QAC9C,kBAAkB,CAAC,KAAK,CAAC,CAAC,EAAE,IAAI,IAAI,CAAC,IAAI,CAAC,EAAE,EAAE,CAAC,CAAC,CAAC,CAAC;QAClD,kBAAkB,CAAC,YAAY,CAAC,CAAC,EAAE,IAAI,CAAC,SAAS,CAAC,CAAC;QACnD,IAAI,SAAS,KAAK,SAAS,EAAE;YACzB,kBAAkB,CAAC,YAAY,CAAC,CAAC,EAAE,SAAS,CAAC,CAAC;SACjD;QACD,OAAO,kBAAkB,CAAC,qBAAqB,CAAC,CAAC,CAAC,CAAC;IACvD,CAAC;IACM,oBAAoB,CAAiC,IAAO,EAAE,CAAU;QAC3E,eAAe,CAAC,oBAAoB,CAAC,CAAC,CAAC,CAAC;QACxC,eAAe,CAAC,YAAY,CAAC,CAAC,EAAE,IAAI,CAAC,SAAS,CAAC,CAAC;QAChD,OAAO,eAAe,CAAC,kBAAkB,CAAC,CAAC,CAAC,CAAC;IACjD,CAAC;IACM,kBAAkB,CAA+B,IAAO,EAAE,CAAU;QACvE,aAAa,CAAC,kBAAkB,CAAC,CAAC,CAAC,CAAC;QACpC,aAAa,CAAC,WAAW,CAAC,CAAC,EAAE,IAAI,CAAC,QAAQ,CAAC,CAAC;QAC5C,OAAO,aAAa,CAAC,gBAAgB,CAAC,CAAC,CAAC,CAAC;IAC7C,CAAC;IACM,QAAQ,CAAsB,IAAO,EAAE,CAAU;QACpD,IAAI,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC;QACjB,IAAI,CAAC,aAAa,CAAC,CAAC,EAAE,IAAI,CAAC,UAAU,CAAC,CAAC;QACvC,OAAO,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC,CAAC;IAC1B,CAAC;CACJ;AAED,cAAc;AACd,MAAM,CAAC,MAAM,QAAQ,GAAG,IAAI,aAAa,EAAE,CAAC","file":"typeassembler.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/typecomparator.d.ts b/igv_component/node_modules/apache-arrow/visitor/typecomparator.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2e23985ff014c2c604a7556da052f8f1c1f2a57b
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typecomparator.d.ts
@@ -0,0 +1,65 @@
+import { Data } from '../data.js';
+import { Vector } from '../vector.js';
+import { Visitor } from '../visitor.js';
+import { Schema, Field } from '../schema.js';
+import { DataType, TypeMap, Dictionary, Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct, Float, Float16, Float32, Float64, Int, Uint8, Uint16, Uint32, Uint64, Int8, Int16, Int32, Int64, Date_, DateDay, DateMillisecond, Interval, IntervalDayTime, IntervalYearMonth, Time, TimeSecond, TimeMillisecond, TimeMicrosecond, TimeNanosecond, Timestamp, TimestampSecond, TimestampMillisecond, TimestampMicrosecond, TimestampNanosecond, Union, DenseUnion, SparseUnion } from '../type.js';
+/** @ignore */
+export interface TypeComparator extends Visitor {
+    visit<T extends DataType>(type: T, other?: DataType | null): other is T;
+    visitMany<T extends DataType>(nodes: T[], others?: DataType[] | null): boolean[];
+    getVisitFn<T extends DataType>(node: Vector<T> | Data<T> | T): (other?: DataType | null) => other is T;
+    visitNull<T extends Null>(type: T, other?: DataType | null): other is T;
+    visitBool<T extends Bool>(type: T, other?: DataType | null): other is T;
+    visitInt<T extends Int>(type: T, other?: DataType | null): other is T;
+    visitInt8<T extends Int8>(type: T, other?: DataType | null): other is T;
+    visitInt16<T extends Int16>(type: T, other?: DataType | null): other is T;
+    visitInt32<T extends Int32>(type: T, other?: DataType | null): other is T;
+    visitInt64<T extends Int64>(type: T, other?: DataType | null): other is T;
+    visitUint8<T extends Uint8>(type: T, other?: DataType | null): other is T;
+    visitUint16<T extends Uint16>(type: T, other?: DataType | null): other is T;
+    visitUint32<T extends Uint32>(type: T, other?: DataType | null): other is T;
+    visitUint64<T extends Uint64>(type: T, other?: DataType | null): other is T;
+    visitFloat<T extends Float>(type: T, other?: DataType | null): other is T;
+    visitFloat16<T extends Float16>(type: T, other?: DataType | null): other is T;
+    visitFloat32<T extends Float32>(type: T, other?: DataType | null): other is T;
+    visitFloat64<T extends Float64>(type: T, other?: DataType | null): other is T;
+    visitUtf8<T extends Utf8>(type: T, other?: DataType | null): other is T;
+    visitBinary<T extends Binary>(type: T, other?: DataType | null): other is T;
+    visitFixedSizeBinary<T extends FixedSizeBinary>(type: T, other?: DataType | null): other is T;
+    visitDate<T extends Date_>(type: T, other?: DataType | null): other is T;
+    visitDateDay<T extends DateDay>(type: T, other?: DataType | null): other is T;
+    visitDateMillisecond<T extends DateMillisecond>(type: T, other?: DataType | null): other is T;
+    visitTimestamp<T extends Timestamp>(type: T, other?: DataType | null): other is T;
+    visitTimestampSecond<T extends TimestampSecond>(type: T, other?: DataType | null): other is T;
+    visitTimestampMillisecond<T extends TimestampMillisecond>(type: T, other?: DataType | null): other is T;
+    visitTimestampMicrosecond<T extends TimestampMicrosecond>(type: T, other?: DataType | null): other is T;
+    visitTimestampNanosecond<T extends TimestampNanosecond>(type: T, other?: DataType | null): other is T;
+    visitTime<T extends Time>(type: T, other?: DataType | null): other is T;
+    visitTimeSecond<T extends TimeSecond>(type: T, other?: DataType | null): other is T;
+    visitTimeMillisecond<T extends TimeMillisecond>(type: T, other?: DataType | null): other is T;
+    visitTimeMicrosecond<T extends TimeMicrosecond>(type: T, other?: DataType | null): other is T;
+    visitTimeNanosecond<T extends TimeNanosecond>(type: T, other?: DataType | null): other is T;
+    visitDecimal<T extends Decimal>(type: T, other?: DataType | null): other is T;
+    visitList<T extends List>(type: T, other?: DataType | null): other is T;
+    visitStruct<T extends Struct>(type: T, other?: DataType | null): other is T;
+    visitUnion<T extends Union>(type: T, other?: DataType | null): other is T;
+    visitDenseUnion<T extends DenseUnion>(type: T, other?: DataType | null): other is T;
+    visitSparseUnion<T extends SparseUnion>(type: T, other?: DataType | null): other is T;
+    visitDictionary<T extends Dictionary>(type: T, other?: DataType | null): other is T;
+    visitInterval<T extends Interval>(type: T, other?: DataType | null): other is T;
+    visitIntervalDayTime<T extends IntervalDayTime>(type: T, other?: DataType | null): other is T;
+    visitIntervalYearMonth<T extends IntervalYearMonth>(type: T, other?: DataType | null): other is T;
+    visitFixedSizeList<T extends FixedSizeList>(type: T, other?: DataType | null): other is T;
+    visitMap<T extends Map_>(type: T, other?: DataType | null): other is T;
+}
+/** @ignore */
+export declare class TypeComparator extends Visitor {
+    compareSchemas<T extends TypeMap>(schema: Schema<T>, other?: Schema | null): other is Schema<T>;
+    compareManyFields<T extends TypeMap>(fields: Field<T[keyof T]>[], others?: Field[] | null): others is Field<T[keyof T]>[];
+    compareFields<T extends DataType = any>(field: Field<T>, other?: Field | null): other is Field<T>;
+}
+/** @ignore */
+export declare const instance: TypeComparator;
+export declare function compareSchemas<T extends TypeMap>(schema: Schema<T>, other?: Schema | null): other is Schema<T>;
+export declare function compareFields<T extends DataType = any>(field: Field<T>, other?: Field | null): other is Field<T>;
+export declare function compareTypes<A extends DataType = any>(type: A, other?: DataType): other is A;
diff --git a/igv_component/node_modules/apache-arrow/visitor/typecomparator.d.ts.map b/igv_component/node_modules/apache-arrow/visitor/typecomparator.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..e5497f522f8370e8c2d654b787c703380e4f86b7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typecomparator.d.ts.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/typecomparator.js b/igv_component/node_modules/apache-arrow/visitor/typecomparator.js
new file mode 100644
index 0000000000000000000000000000000000000000..446bbd24ca24caa073d2f357436cc52d39bd9411
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typecomparator.js
@@ -0,0 +1,171 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.compareTypes = exports.compareFields = exports.compareSchemas = exports.instance = exports.TypeComparator = void 0;
+const visitor_js_1 = require("../visitor.js");
+/** @ignore */
+class TypeComparator extends visitor_js_1.Visitor {
+    compareSchemas(schema, other) {
+        return (schema === other) || (other instanceof schema.constructor &&
+            this.compareManyFields(schema.fields, other.fields));
+    }
+    compareManyFields(fields, others) {
+        return (fields === others) || (Array.isArray(fields) &&
+            Array.isArray(others) &&
+            fields.length === others.length &&
+            fields.every((f, i) => this.compareFields(f, others[i])));
+    }
+    compareFields(field, other) {
+        return (field === other) || (other instanceof field.constructor &&
+            field.name === other.name &&
+            field.nullable === other.nullable &&
+            this.visit(field.type, other.type));
+    }
+}
+exports.TypeComparator = TypeComparator;
+function compareConstructor(type, other) {
+    return other instanceof type.constructor;
+}
+function compareAny(type, other) {
+    return (type === other) || compareConstructor(type, other);
+}
+function compareInt(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.bitWidth === other.bitWidth &&
+        type.isSigned === other.isSigned);
+}
+function compareFloat(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.precision === other.precision);
+}
+function compareFixedSizeBinary(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.byteWidth === other.byteWidth);
+}
+function compareDate(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.unit === other.unit);
+}
+function compareTimestamp(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.unit === other.unit &&
+        type.timezone === other.timezone);
+}
+function compareTime(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.unit === other.unit &&
+        type.bitWidth === other.bitWidth);
+}
+function compareList(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.children.length === other.children.length &&
+        exports.instance.compareManyFields(type.children, other.children));
+}
+function compareStruct(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.children.length === other.children.length &&
+        exports.instance.compareManyFields(type.children, other.children));
+}
+function compareUnion(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.mode === other.mode &&
+        type.typeIds.every((x, i) => x === other.typeIds[i]) &&
+        exports.instance.compareManyFields(type.children, other.children));
+}
+function compareDictionary(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.id === other.id &&
+        type.isOrdered === other.isOrdered &&
+        exports.instance.visit(type.indices, other.indices) &&
+        exports.instance.visit(type.dictionary, other.dictionary));
+}
+function compareInterval(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.unit === other.unit);
+}
+function compareFixedSizeList(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.listSize === other.listSize &&
+        type.children.length === other.children.length &&
+        exports.instance.compareManyFields(type.children, other.children));
+}
+function compareMap(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.keysSorted === other.keysSorted &&
+        type.children.length === other.children.length &&
+        exports.instance.compareManyFields(type.children, other.children));
+}
+TypeComparator.prototype.visitNull = compareAny;
+TypeComparator.prototype.visitBool = compareAny;
+TypeComparator.prototype.visitInt = compareInt;
+TypeComparator.prototype.visitInt8 = compareInt;
+TypeComparator.prototype.visitInt16 = compareInt;
+TypeComparator.prototype.visitInt32 = compareInt;
+TypeComparator.prototype.visitInt64 = compareInt;
+TypeComparator.prototype.visitUint8 = compareInt;
+TypeComparator.prototype.visitUint16 = compareInt;
+TypeComparator.prototype.visitUint32 = compareInt;
+TypeComparator.prototype.visitUint64 = compareInt;
+TypeComparator.prototype.visitFloat = compareFloat;
+TypeComparator.prototype.visitFloat16 = compareFloat;
+TypeComparator.prototype.visitFloat32 = compareFloat;
+TypeComparator.prototype.visitFloat64 = compareFloat;
+TypeComparator.prototype.visitUtf8 = compareAny;
+TypeComparator.prototype.visitBinary = compareAny;
+TypeComparator.prototype.visitFixedSizeBinary = compareFixedSizeBinary;
+TypeComparator.prototype.visitDate = compareDate;
+TypeComparator.prototype.visitDateDay = compareDate;
+TypeComparator.prototype.visitDateMillisecond = compareDate;
+TypeComparator.prototype.visitTimestamp = compareTimestamp;
+TypeComparator.prototype.visitTimestampSecond = compareTimestamp;
+TypeComparator.prototype.visitTimestampMillisecond = compareTimestamp;
+TypeComparator.prototype.visitTimestampMicrosecond = compareTimestamp;
+TypeComparator.prototype.visitTimestampNanosecond = compareTimestamp;
+TypeComparator.prototype.visitTime = compareTime;
+TypeComparator.prototype.visitTimeSecond = compareTime;
+TypeComparator.prototype.visitTimeMillisecond = compareTime;
+TypeComparator.prototype.visitTimeMicrosecond = compareTime;
+TypeComparator.prototype.visitTimeNanosecond = compareTime;
+TypeComparator.prototype.visitDecimal = compareAny;
+TypeComparator.prototype.visitList = compareList;
+TypeComparator.prototype.visitStruct = compareStruct;
+TypeComparator.prototype.visitUnion = compareUnion;
+TypeComparator.prototype.visitDenseUnion = compareUnion;
+TypeComparator.prototype.visitSparseUnion = compareUnion;
+TypeComparator.prototype.visitDictionary = compareDictionary;
+TypeComparator.prototype.visitInterval = compareInterval;
+TypeComparator.prototype.visitIntervalDayTime = compareInterval;
+TypeComparator.prototype.visitIntervalYearMonth = compareInterval;
+TypeComparator.prototype.visitFixedSizeList = compareFixedSizeList;
+TypeComparator.prototype.visitMap = compareMap;
+/** @ignore */
+exports.instance = new TypeComparator();
+function compareSchemas(schema, other) {
+    return exports.instance.compareSchemas(schema, other);
+}
+exports.compareSchemas = compareSchemas;
+function compareFields(field, other) {
+    return exports.instance.compareFields(field, other);
+}
+exports.compareFields = compareFields;
+function compareTypes(type, other) {
+    return exports.instance.visit(type, other);
+}
+exports.compareTypes = compareTypes;
+
+//# sourceMappingURL=typecomparator.js.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/typecomparator.js.map b/igv_component/node_modules/apache-arrow/visitor/typecomparator.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..819cbbe42ffb197228c3f3d09fbe1f79e2ae8b9e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typecomparator.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/typecomparator.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAIrB,8CAAwC;AAgExC,cAAc;AACd,MAAa,cAAe,SAAQ,oBAAO;IACvC,cAAc,CAAoB,MAAiB,EAAE,KAAqB;QACtE,OAAO,CAAC,MAAM,KAAK,KAAK,CAAC,IAAI,CACzB,KAAK,YAAY,MAAM,CAAC,WAAW;YACnC,IAAI,CAAC,iBAAiB,CAAC,MAAM,CAAC,MAAM,EAAE,KAAK,CAAC,MAAM,CAAC,CACtD,CAAC;IACN,CAAC;IACD,iBAAiB,CAAoB,MAA2B,EAAE,MAAuB;QACrF,OAAO,CAAC,MAAM,KAAK,MAAM,CAAC,IAAI,CAC1B,KAAK,CAAC,OAAO,CAAC,MAAM,CAAC;YACrB,KAAK,CAAC,OAAO,CAAC,MAAM,CAAC;YACrB,MAAM,CAAC,MAAM,KAAK,MAAM,CAAC,MAAM;YAC/B,MAAM,CAAC,KAAK,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,IAAI,CAAC,aAAa,CAAC,CAAC,EAAE,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAC3D,CAAC;IACN,CAAC;IACD,aAAa,CAA2B,KAAe,EAAE,KAAoB;QACzE,OAAO,CAAC,KAAK,KAAK,KAAK,CAAC,IAAI,CACxB,KAAK,YAAY,KAAK,CAAC,WAAW;YAClC,KAAK,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI;YACzB,KAAK,CAAC,QAAQ,KAAK,KAAK,CAAC,QAAQ;YACjC,IAAI,CAAC,KAAK,CAAC,KAAK,CAAC,IAAI,EAAE,KAAK,CAAC,IAAI,CAAC,CACrC,CAAC;IACN,CAAC;CACJ;AAvBD,wCAuBC;AAED,SAAS,kBAAkB,CAAqB,IAAO,EAAE,KAAuB;IAC5E,OAAO,KAAK,YAAY,IAAI,CAAC,WAAW,CAAC;AAC7C,CAAC;AAED,SAAS,UAAU,CAAqB,IAAO,EAAE,KAAuB;IACpE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC,CAAC;AAC/D,CAAC;AAED,SAAS,UAAU,CAAgB,IAAO,EAAE,KAAuB;IAC/D,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,QAAQ,KAAK,KAAK,CAAC,QAAQ;QAChC,IAAI,CAAC,QAAQ,KAAK,KAAK,CAAC,QAAQ,CACnC,CAAC;AACN,CAAC;AAED,SAAS,YAAY,CAAkB,IAAO,EAAE,KAAuB;IACnE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,SAAS,KAAK,KAAK,CAAC,SAAS,CACrC,CAAC;AACN,CAAC;AAED,SAAS,sBAAsB,CAA4B,IAAO,EAAE,KAAuB;IACvF,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,SAAS,KAAK,KAAK,CAAC,SAAS,CACrC,CAAC;AACN,CAAC;AAED,SAAS,WAAW,CAAkB,IAAO,EAAE,KAAuB;IAClE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CAC3B,CAAC;AACN,CAAC;AAED,SAAS,gBAAgB,CAAsB,IAAO,EAAE,KAAuB;IAC3E,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI;QACxB,IAAI,CAAC,QAAQ,KAAK,KAAK,CAAC,QAAQ,CACnC,CAAC;AACN,CAAC;AAED,SAAS,WAAW,CAAiB,IAAO,EAAE,KAAuB;IACjE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI;QACxB,IAAI,CAAC,QAAQ,KAAK,KAAK,CAAC,QAAQ,CACnC,CAAC;AACN,CAAC;AAED,SAAS,WAAW,CAAiB,IAAO,EAAE,KAAuB;IACjE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,QAAQ,CAAC,MAAM,KAAK,KAAK,CAAC,QAAQ,CAAC,MAAM;QAC9C,gBAAQ,CAAC,iBAAiB,CAAC,IAAI,CAAC,QAAQ,EAAE,KAAK,CAAC,QAAQ,CAAC,CAC5D,CAAC;AACN,CAAC;AAED,SAAS,aAAa,CAAmB,IAAO,EAAE,KAAuB;IACrE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,QAAQ,CAAC,MAAM,KAAK,KAAK,CAAC,QAAQ,CAAC,MAAM;QAC9C,gBAAQ,CAAC,iBAAiB,CAAC,IAAI,CAAC,QAAQ,EAAE,KAAK,CAAC,QAAQ,CAAC,CAC5D,CAAC;AACN,CAAC;AAED,SAAS,YAAY,CAAkB,IAAO,EAAE,KAAuB;IACnE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI;QACxB,IAAI,CAAC,OAAO,CAAC,KAAK,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,CAAC,KAAK,KAAK,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC;QACpD,gBAAQ,CAAC,iBAAiB,CAAC,IAAI,CAAC,QAAQ,EAAE,KAAK,CAAC,QAAQ,CAAC,CAC5D,CAAC;AACN,CAAC;AAED,SAAS,iBAAiB,CAAuB,IAAO,EAAE,KAAuB;IAC7E,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,EAAE,KAAK,KAAK,CAAC,EAAE;QACpB,IAAI,CAAC,SAAS,KAAK,KAAK,CAAC,SAAS;QAClC,gBAAQ,CAAC,KAAK,CAAM,IAAI,CAAC,OAAO,EAAE,KAAK,CAAC,OAAO,CAAC;QAChD,gBAAQ,CAAC,KAAK,CAAC,IAAI,CAAC,UAAU,EAAE,KAAK,CAAC,UAAU,CAAC,CACpD,CAAC;AACN,CAAC;AAED,SAAS,eAAe,CAAqB,IAAO,EAAE,KAAuB;IACzE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CAC3B,CAAC;AACN,CAAC;AAED,SAAS,oBAAoB,CAA0B,IAAO,EAAE,KAAuB;IACnF,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,QAAQ,KAAK,KAAK,CAAC,QAAQ;QAChC,IAAI,CAAC,QAAQ,CAAC,MAAM,KAAK,KAAK,CAAC,QAAQ,CAAC,MAAM;QAC9C,gBAAQ,CAAC,iBAAiB,CAAC,IAAI,CAAC,QAAQ,EAAE,KAAK,CAAC,QAAQ,CAAC,CAC5D,CAAC;AACN,CAAC;AAED,SAAS,UAAU,CAAiB,IAAO,EAAE,KAAuB;IAChE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,UAAU,KAAK,KAAK,CAAC,UAAU;QACpC,IAAI,CAAC,QAAQ,CAAC,MAAM,KAAK,KAAK,CAAC,QAAQ,CAAC,MAAM;QAC9C,gBAAQ,CAAC,iBAAiB,CAAC,IAAI,CAAC,QAAQ,EAAE,KAAK,CAAC,QAAQ,CAAC,CAC5D,CAAC;AACN,CAAC;AAED,cAAc,CAAC,SAAS,CAAC,SAAS,GAAG,UAAU,CAAC;AAChD,cAAc,CAAC,SAAS,CAAC,SAAS,GAAG,UAAU,CAAC;AAChD,cAAc,CAAC,SAAS,CAAC,QAAQ,GAAG,UAAU,CAAC;AAC/C,cAAc,CAAC,SAAS,CAAC,SAAS,GAAG,UAAU,CAAC;AAChD,cAAc,CAAC,SAAS,CAAC,UAAU,GAAG,UAAU,CAAC;AACjD,cAAc,CAAC,SAAS,CAAC,UAAU,GAAG,UAAU,CAAC;AACjD,cAAc,CAAC,SAAS,CAAC,UAAU,GAAG,UAAU,CAAC;AACjD,cAAc,CAAC,SAAS,CAAC,UAAU,GAAG,UAAU,CAAC;AACjD,cAAc,CAAC,SAAS,CAA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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/typecomparator.mjs b/igv_component/node_modules/apache-arrow/visitor/typecomparator.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..1a3cfb56c749d1281399f8ff86b8712f7b628ca7
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typecomparator.mjs
@@ -0,0 +1,164 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Visitor } from '../visitor.mjs';
+/** @ignore */
+export class TypeComparator extends Visitor {
+    compareSchemas(schema, other) {
+        return (schema === other) || (other instanceof schema.constructor &&
+            this.compareManyFields(schema.fields, other.fields));
+    }
+    compareManyFields(fields, others) {
+        return (fields === others) || (Array.isArray(fields) &&
+            Array.isArray(others) &&
+            fields.length === others.length &&
+            fields.every((f, i) => this.compareFields(f, others[i])));
+    }
+    compareFields(field, other) {
+        return (field === other) || (other instanceof field.constructor &&
+            field.name === other.name &&
+            field.nullable === other.nullable &&
+            this.visit(field.type, other.type));
+    }
+}
+function compareConstructor(type, other) {
+    return other instanceof type.constructor;
+}
+function compareAny(type, other) {
+    return (type === other) || compareConstructor(type, other);
+}
+function compareInt(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.bitWidth === other.bitWidth &&
+        type.isSigned === other.isSigned);
+}
+function compareFloat(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.precision === other.precision);
+}
+function compareFixedSizeBinary(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.byteWidth === other.byteWidth);
+}
+function compareDate(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.unit === other.unit);
+}
+function compareTimestamp(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.unit === other.unit &&
+        type.timezone === other.timezone);
+}
+function compareTime(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.unit === other.unit &&
+        type.bitWidth === other.bitWidth);
+}
+function compareList(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.children.length === other.children.length &&
+        instance.compareManyFields(type.children, other.children));
+}
+function compareStruct(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.children.length === other.children.length &&
+        instance.compareManyFields(type.children, other.children));
+}
+function compareUnion(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.mode === other.mode &&
+        type.typeIds.every((x, i) => x === other.typeIds[i]) &&
+        instance.compareManyFields(type.children, other.children));
+}
+function compareDictionary(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.id === other.id &&
+        type.isOrdered === other.isOrdered &&
+        instance.visit(type.indices, other.indices) &&
+        instance.visit(type.dictionary, other.dictionary));
+}
+function compareInterval(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.unit === other.unit);
+}
+function compareFixedSizeList(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.listSize === other.listSize &&
+        type.children.length === other.children.length &&
+        instance.compareManyFields(type.children, other.children));
+}
+function compareMap(type, other) {
+    return (type === other) || (compareConstructor(type, other) &&
+        type.keysSorted === other.keysSorted &&
+        type.children.length === other.children.length &&
+        instance.compareManyFields(type.children, other.children));
+}
+TypeComparator.prototype.visitNull = compareAny;
+TypeComparator.prototype.visitBool = compareAny;
+TypeComparator.prototype.visitInt = compareInt;
+TypeComparator.prototype.visitInt8 = compareInt;
+TypeComparator.prototype.visitInt16 = compareInt;
+TypeComparator.prototype.visitInt32 = compareInt;
+TypeComparator.prototype.visitInt64 = compareInt;
+TypeComparator.prototype.visitUint8 = compareInt;
+TypeComparator.prototype.visitUint16 = compareInt;
+TypeComparator.prototype.visitUint32 = compareInt;
+TypeComparator.prototype.visitUint64 = compareInt;
+TypeComparator.prototype.visitFloat = compareFloat;
+TypeComparator.prototype.visitFloat16 = compareFloat;
+TypeComparator.prototype.visitFloat32 = compareFloat;
+TypeComparator.prototype.visitFloat64 = compareFloat;
+TypeComparator.prototype.visitUtf8 = compareAny;
+TypeComparator.prototype.visitBinary = compareAny;
+TypeComparator.prototype.visitFixedSizeBinary = compareFixedSizeBinary;
+TypeComparator.prototype.visitDate = compareDate;
+TypeComparator.prototype.visitDateDay = compareDate;
+TypeComparator.prototype.visitDateMillisecond = compareDate;
+TypeComparator.prototype.visitTimestamp = compareTimestamp;
+TypeComparator.prototype.visitTimestampSecond = compareTimestamp;
+TypeComparator.prototype.visitTimestampMillisecond = compareTimestamp;
+TypeComparator.prototype.visitTimestampMicrosecond = compareTimestamp;
+TypeComparator.prototype.visitTimestampNanosecond = compareTimestamp;
+TypeComparator.prototype.visitTime = compareTime;
+TypeComparator.prototype.visitTimeSecond = compareTime;
+TypeComparator.prototype.visitTimeMillisecond = compareTime;
+TypeComparator.prototype.visitTimeMicrosecond = compareTime;
+TypeComparator.prototype.visitTimeNanosecond = compareTime;
+TypeComparator.prototype.visitDecimal = compareAny;
+TypeComparator.prototype.visitList = compareList;
+TypeComparator.prototype.visitStruct = compareStruct;
+TypeComparator.prototype.visitUnion = compareUnion;
+TypeComparator.prototype.visitDenseUnion = compareUnion;
+TypeComparator.prototype.visitSparseUnion = compareUnion;
+TypeComparator.prototype.visitDictionary = compareDictionary;
+TypeComparator.prototype.visitInterval = compareInterval;
+TypeComparator.prototype.visitIntervalDayTime = compareInterval;
+TypeComparator.prototype.visitIntervalYearMonth = compareInterval;
+TypeComparator.prototype.visitFixedSizeList = compareFixedSizeList;
+TypeComparator.prototype.visitMap = compareMap;
+/** @ignore */
+export const instance = new TypeComparator();
+export function compareSchemas(schema, other) {
+    return instance.compareSchemas(schema, other);
+}
+export function compareFields(field, other) {
+    return instance.compareFields(field, other);
+}
+export function compareTypes(type, other) {
+    return instance.visit(type, other);
+}
+
+//# sourceMappingURL=typecomparator.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/typecomparator.mjs.map b/igv_component/node_modules/apache-arrow/visitor/typecomparator.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..b33caba784d5615df4fc8dc6eec40d13b624a5f8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typecomparator.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/typecomparator.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAIrB,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AAgExC,cAAc;AACd,MAAM,OAAO,cAAe,SAAQ,OAAO;IACvC,cAAc,CAAoB,MAAiB,EAAE,KAAqB;QACtE,OAAO,CAAC,MAAM,KAAK,KAAK,CAAC,IAAI,CACzB,KAAK,YAAY,MAAM,CAAC,WAAW;YACnC,IAAI,CAAC,iBAAiB,CAAC,MAAM,CAAC,MAAM,EAAE,KAAK,CAAC,MAAM,CAAC,CACtD,CAAC;IACN,CAAC;IACD,iBAAiB,CAAoB,MAA2B,EAAE,MAAuB;QACrF,OAAO,CAAC,MAAM,KAAK,MAAM,CAAC,IAAI,CAC1B,KAAK,CAAC,OAAO,CAAC,MAAM,CAAC;YACrB,KAAK,CAAC,OAAO,CAAC,MAAM,CAAC;YACrB,MAAM,CAAC,MAAM,KAAK,MAAM,CAAC,MAAM;YAC/B,MAAM,CAAC,KAAK,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,IAAI,CAAC,aAAa,CAAC,CAAC,EAAE,MAAM,CAAC,CAAC,CAAC,CAAC,CAAC,CAC3D,CAAC;IACN,CAAC;IACD,aAAa,CAA2B,KAAe,EAAE,KAAoB;QACzE,OAAO,CAAC,KAAK,KAAK,KAAK,CAAC,IAAI,CACxB,KAAK,YAAY,KAAK,CAAC,WAAW;YAClC,KAAK,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI;YACzB,KAAK,CAAC,QAAQ,KAAK,KAAK,CAAC,QAAQ;YACjC,IAAI,CAAC,KAAK,CAAC,KAAK,CAAC,IAAI,EAAE,KAAK,CAAC,IAAI,CAAC,CACrC,CAAC;IACN,CAAC;CACJ;AAED,SAAS,kBAAkB,CAAqB,IAAO,EAAE,KAAuB;IAC5E,OAAO,KAAK,YAAY,IAAI,CAAC,WAAW,CAAC;AAC7C,CAAC;AAED,SAAS,UAAU,CAAqB,IAAO,EAAE,KAAuB;IACpE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC,CAAC;AAC/D,CAAC;AAED,SAAS,UAAU,CAAgB,IAAO,EAAE,KAAuB;IAC/D,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,QAAQ,KAAK,KAAK,CAAC,QAAQ;QAChC,IAAI,CAAC,QAAQ,KAAK,KAAK,CAAC,QAAQ,CACnC,CAAC;AACN,CAAC;AAED,SAAS,YAAY,CAAkB,IAAO,EAAE,KAAuB;IACnE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,SAAS,KAAK,KAAK,CAAC,SAAS,CACrC,CAAC;AACN,CAAC;AAED,SAAS,sBAAsB,CAA4B,IAAO,EAAE,KAAuB;IACvF,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,SAAS,KAAK,KAAK,CAAC,SAAS,CACrC,CAAC;AACN,CAAC;AAED,SAAS,WAAW,CAAkB,IAAO,EAAE,KAAuB;IAClE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CAC3B,CAAC;AACN,CAAC;AAED,SAAS,gBAAgB,CAAsB,IAAO,EAAE,KAAuB;IAC3E,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI;QACxB,IAAI,CAAC,QAAQ,KAAK,KAAK,CAAC,QAAQ,CACnC,CAAC;AACN,CAAC;AAED,SAAS,WAAW,CAAiB,IAAO,EAAE,KAAuB;IACjE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI;QACxB,IAAI,CAAC,QAAQ,KAAK,KAAK,CAAC,QAAQ,CACnC,CAAC;AACN,CAAC;AAED,SAAS,WAAW,CAAiB,IAAO,EAAE,KAAuB;IACjE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,QAAQ,CAAC,MAAM,KAAK,KAAK,CAAC,QAAQ,CAAC,MAAM;QAC9C,QAAQ,CAAC,iBAAiB,CAAC,IAAI,CAAC,QAAQ,EAAE,KAAK,CAAC,QAAQ,CAAC,CAC5D,CAAC;AACN,CAAC;AAED,SAAS,aAAa,CAAmB,IAAO,EAAE,KAAuB;IACrE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,QAAQ,CAAC,MAAM,KAAK,KAAK,CAAC,QAAQ,CAAC,MAAM;QAC9C,QAAQ,CAAC,iBAAiB,CAAC,IAAI,CAAC,QAAQ,EAAE,KAAK,CAAC,QAAQ,CAAC,CAC5D,CAAC;AACN,CAAC;AAED,SAAS,YAAY,CAAkB,IAAO,EAAE,KAAuB;IACnE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI;QACxB,IAAI,CAAC,OAAO,CAAC,KAAK,CAAC,CAAC,CAAC,EAAE,CAAC,EAAE,EAAE,CAAC,CAAC,KAAK,KAAK,CAAC,OAAO,CAAC,CAAC,CAAC,CAAC;QACpD,QAAQ,CAAC,iBAAiB,CAAC,IAAI,CAAC,QAAQ,EAAE,KAAK,CAAC,QAAQ,CAAC,CAC5D,CAAC;AACN,CAAC;AAED,SAAS,iBAAiB,CAAuB,IAAO,EAAE,KAAuB;IAC7E,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,EAAE,KAAK,KAAK,CAAC,EAAE;QACpB,IAAI,CAAC,SAAS,KAAK,KAAK,CAAC,SAAS;QAClC,QAAQ,CAAC,KAAK,CAAM,IAAI,CAAC,OAAO,EAAE,KAAK,CAAC,OAAO,CAAC;QAChD,QAAQ,CAAC,KAAK,CAAC,IAAI,CAAC,UAAU,EAAE,KAAK,CAAC,UAAU,CAAC,CACpD,CAAC;AACN,CAAC;AAED,SAAS,eAAe,CAAqB,IAAO,EAAE,KAAuB;IACzE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CAC3B,CAAC;AACN,CAAC;AAED,SAAS,oBAAoB,CAA0B,IAAO,EAAE,KAAuB;IACnF,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,QAAQ,KAAK,KAAK,CAAC,QAAQ;QAChC,IAAI,CAAC,QAAQ,CAAC,MAAM,KAAK,KAAK,CAAC,QAAQ,CAAC,MAAM;QAC9C,QAAQ,CAAC,iBAAiB,CAAC,IAAI,CAAC,QAAQ,EAAE,KAAK,CAAC,QAAQ,CAAC,CAC5D,CAAC;AACN,CAAC;AAED,SAAS,UAAU,CAAiB,IAAO,EAAE,KAAuB;IAChE,OAAO,CAAC,IAAI,KAAK,KAAK,CAAC,IAAI,CACvB,kBAAkB,CAAC,IAAI,EAAE,KAAK,CAAC;QAC/B,IAAI,CAAC,UAAU,KAAK,KAAK,CAAC,UAAU;QACpC,IAAI,CAAC,QAAQ,CAAC,MAAM,KAAK,KAAK,CAAC,QAAQ,CAAC,MAAM;QAC9C,QAAQ,CAAC,iBAAiB,CAAC,IAAI,CAAC,QAAQ,EAAE,KAAK,CAAC,QAAQ,CAAC,CAC5D,CAAC;AACN,CAAC;AAED,cAAc,CAAC,SAAS,CAAC,SAAS,GAAG,UAAU,CAAC;AAChD,cAAc,CAAC,SAAS,CAAC,SAAS,GAAG,UAAU,CAAC;AAChD,cAAc,CAAC,SAAS,CAAC,QAAQ,GAAG,UAAU,CAAC;AAC/C,cAAc,CAAC,SAAS,CAAC,SAAS,GAAG,UAAU,CAAC;AAChD,cAAc,CAAC,SAAS,CAAC,UAAU,GAAG,UAAU,CAAC;AACjD,cAAc,CAAC,SAAS,CAAC,UAAU,GAAG,UAAU,CAAC;AACjD,cAAc,CAAC,SAAS,CAAC,UAAU,GAAG,UAAU,CAAC;AACjD,cAAc,CAAC,SAAS,CAAC,UAAU,GAAG,UAAU,CAAC;AACjD,cAAc,CAAC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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/typector.d.ts b/igv_component/node_modules/apache-arrow/visitor/typector.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..f51ab73a4a03e7fa0736e099ae8b24607fb20f91
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typector.d.ts
@@ -0,0 +1,62 @@
+import { Data } from '../data.js';
+import { Type } from '../enum.js';
+import * as type from '../type.js';
+import { Vector } from '../vector.js';
+import { DataType } from '../type.js';
+import { Visitor } from '../visitor.js';
+import { DataTypeCtor } from '../interfaces.js';
+/** @ignore */
+export interface GetDataTypeConstructor extends Visitor {
+    visit<T extends Type>(node: T): DataTypeCtor<T>;
+    visitMany<T extends Type>(nodes: T[]): DataTypeCtor<T>[];
+    getVisitFn<T extends Type>(node: T): () => DataTypeCtor<T>;
+    getVisitFn<T extends DataType>(node: Vector<T> | Data<T> | T): () => DataTypeCtor<T>;
+}
+/** @ignore */
+export declare class GetDataTypeConstructor extends Visitor {
+    visitNull(): typeof type.Null;
+    visitBool(): typeof type.Bool;
+    visitInt(): typeof type.Int;
+    visitInt8(): typeof type.Int8;
+    visitInt16(): typeof type.Int16;
+    visitInt32(): typeof type.Int32;
+    visitInt64(): typeof type.Int64;
+    visitUint8(): typeof type.Uint8;
+    visitUint16(): typeof type.Uint16;
+    visitUint32(): typeof type.Uint32;
+    visitUint64(): typeof type.Uint64;
+    visitFloat(): typeof type.Float;
+    visitFloat16(): typeof type.Float16;
+    visitFloat32(): typeof type.Float32;
+    visitFloat64(): typeof type.Float64;
+    visitUtf8(): typeof type.Utf8;
+    visitBinary(): typeof type.Binary;
+    visitFixedSizeBinary(): typeof type.FixedSizeBinary;
+    visitDate(): typeof type.Date_;
+    visitDateDay(): typeof type.DateDay;
+    visitDateMillisecond(): typeof type.DateMillisecond;
+    visitTimestamp(): typeof type.Timestamp;
+    visitTimestampSecond(): typeof type.TimestampSecond;
+    visitTimestampMillisecond(): typeof type.TimestampMillisecond;
+    visitTimestampMicrosecond(): typeof type.TimestampMicrosecond;
+    visitTimestampNanosecond(): typeof type.TimestampNanosecond;
+    visitTime(): typeof type.Time;
+    visitTimeSecond(): typeof type.TimeSecond;
+    visitTimeMillisecond(): typeof type.TimeMillisecond;
+    visitTimeMicrosecond(): typeof type.TimeMicrosecond;
+    visitTimeNanosecond(): typeof type.TimeNanosecond;
+    visitDecimal(): typeof type.Decimal;
+    visitList(): typeof type.List;
+    visitStruct(): typeof type.Struct;
+    visitUnion(): typeof type.Union;
+    visitDenseUnion(): typeof type.DenseUnion;
+    visitSparseUnion(): typeof type.SparseUnion;
+    visitDictionary(): typeof type.Dictionary;
+    visitInterval(): typeof type.Interval;
+    visitIntervalDayTime(): typeof type.IntervalDayTime;
+    visitIntervalYearMonth(): typeof type.IntervalYearMonth;
+    visitFixedSizeList(): typeof type.FixedSizeList;
+    visitMap(): typeof type.Map_;
+}
+/** @ignore */
+export declare const instance: GetDataTypeConstructor;
diff --git a/igv_component/node_modules/apache-arrow/visitor/typector.d.ts.map b/igv_component/node_modules/apache-arrow/visitor/typector.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..c5cdbb22540cc1566ec6dcaca173f4fc649e4523
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typector.d.ts.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/typector.ts"],"names":[],"mappings":"AAiBA,OAAO,EAAE,IAAI,EAAE,MAAM,YAAY,CAAC;AAClC,OAAO,EAAE,IAAI,EAAE,MAAM,YAAY,CAAC;AAClC,OAAO,KAAK,IAAI,MAAM,YAAY,CAAC;AACnC,OAAO,EAAE,MAAM,EAAE,MAAM,cAAc,CAAC;AACtC,OAAO,EAAE,QAAQ,EAAE,MAAM,YAAY,CAAC;AACtC,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AACxC,OAAO,EAAE,YAAY,EAAE,MAAM,kBAAkB,CAAC;AAEhD,cAAc;AACd,MAAM,WAAW,sBAAuB,SAAQ,OAAO;IACnD,KAAK,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,CAAC,GAAG,YAAY,CAAC,CAAC,CAAC,CAAC;IAChD,SAAS,CAAC,CAAC,SAAS,IAAI,EAAE,KAAK,EAAE,CAAC,EAAE,GAAG,YAAY,CAAC,CAAC,CAAC,EAAE,CAAC;IACzD,UAAU,CAAC,CAAC,SAAS,IAAI,EAAE,IAAI,EAAE,CAAC,GAAG,MAAM,YAAY,CAAC,CAAC,CAAC,CAAC;IAC3D,UAAU,CAAC,CAAC,SAAS,QAAQ,EAAE,IAAI,EAAE,MAAM,CAAC,CAAC,CAAC,GAAG,IAAI,CAAC,CAAC,CAAC,GAAG,CAAC,GAAG,MAAM,YAAY,CAAC,CAAC,CAAC,CAAC;CACxF;AAED,cAAc;AACd,qBAAa,sBAAuB,SAAQ,OAAO;IACxC,SAAS;IACT,SAAS;IACT,QAAQ;IACR,SAAS;IACT,UAAU;IACV,UAAU;IACV,UAAU;IACV,UAAU;IACV,WAAW;IACX,WAAW;IACX,WAAW;IACX,UAAU;IACV,YAAY;IACZ,YAAY;IACZ,YAAY;IACZ,SAAS;IACT,WAAW;IACX,oBAAoB;IACpB,SAAS;IACT,YAAY;IACZ,oBAAoB;IACpB,cAAc;IACd,oBAAoB;IACpB,yBAAyB;IACzB,yBAAyB;IACzB,wBAAwB;IACxB,SAAS;IACT,eAAe;IACf,oBAAoB;IACpB,oBAAoB;IACpB,mBAAmB;IACnB,YAAY;IACZ,SAAS;IACT,WAAW;IACX,UAAU;IACV,eAAe;IACf,gBAAgB;IAChB,eAAe;IACf,aAAa;IACb,oBAAoB;IACpB,sBAAsB;IACtB,kBAAkB;IAClB,QAAQ;CAClB;AAED,cAAc;AACd,eAAO,MAAM,QAAQ,wBAA+B,CAAC","file":"typector.d.ts","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/typector.js b/igv_component/node_modules/apache-arrow/visitor/typector.js
new file mode 100644
index 0000000000000000000000000000000000000000..db70f9e6224c865fe32ddbff68e4068523849734
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typector.js
@@ -0,0 +1,73 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.instance = exports.GetDataTypeConstructor = void 0;
+const tslib_1 = require("tslib");
+const type = tslib_1.__importStar(require("../type.js"));
+const visitor_js_1 = require("../visitor.js");
+/** @ignore */
+class GetDataTypeConstructor extends visitor_js_1.Visitor {
+    visitNull() { return type.Null; }
+    visitBool() { return type.Bool; }
+    visitInt() { return type.Int; }
+    visitInt8() { return type.Int8; }
+    visitInt16() { return type.Int16; }
+    visitInt32() { return type.Int32; }
+    visitInt64() { return type.Int64; }
+    visitUint8() { return type.Uint8; }
+    visitUint16() { return type.Uint16; }
+    visitUint32() { return type.Uint32; }
+    visitUint64() { return type.Uint64; }
+    visitFloat() { return type.Float; }
+    visitFloat16() { return type.Float16; }
+    visitFloat32() { return type.Float32; }
+    visitFloat64() { return type.Float64; }
+    visitUtf8() { return type.Utf8; }
+    visitBinary() { return type.Binary; }
+    visitFixedSizeBinary() { return type.FixedSizeBinary; }
+    visitDate() { return type.Date_; }
+    visitDateDay() { return type.DateDay; }
+    visitDateMillisecond() { return type.DateMillisecond; }
+    visitTimestamp() { return type.Timestamp; }
+    visitTimestampSecond() { return type.TimestampSecond; }
+    visitTimestampMillisecond() { return type.TimestampMillisecond; }
+    visitTimestampMicrosecond() { return type.TimestampMicrosecond; }
+    visitTimestampNanosecond() { return type.TimestampNanosecond; }
+    visitTime() { return type.Time; }
+    visitTimeSecond() { return type.TimeSecond; }
+    visitTimeMillisecond() { return type.TimeMillisecond; }
+    visitTimeMicrosecond() { return type.TimeMicrosecond; }
+    visitTimeNanosecond() { return type.TimeNanosecond; }
+    visitDecimal() { return type.Decimal; }
+    visitList() { return type.List; }
+    visitStruct() { return type.Struct; }
+    visitUnion() { return type.Union; }
+    visitDenseUnion() { return type.DenseUnion; }
+    visitSparseUnion() { return type.SparseUnion; }
+    visitDictionary() { return type.Dictionary; }
+    visitInterval() { return type.Interval; }
+    visitIntervalDayTime() { return type.IntervalDayTime; }
+    visitIntervalYearMonth() { return type.IntervalYearMonth; }
+    visitFixedSizeList() { return type.FixedSizeList; }
+    visitMap() { return type.Map_; }
+}
+exports.GetDataTypeConstructor = GetDataTypeConstructor;
+/** @ignore */
+exports.instance = new GetDataTypeConstructor();
+
+//# sourceMappingURL=typector.js.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/typector.js.map b/igv_component/node_modules/apache-arrow/visitor/typector.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..e91e0095432b44fb6b70a82d8306449e72f1a0e8
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typector.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/typector.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;;AAIrB,yDAAmC;AAGnC,8CAAwC;AAWxC,cAAc;AACd,MAAa,sBAAuB,SAAQ,oBAAO;IACxC,SAAS,KAAK,OAAO,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;IACjC,SAAS,KAAK,OAAO,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;IACjC,QAAQ,KAAK,OAAO,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC;IAC/B,SAAS,KAAK,OAAO,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;IACjC,UAAU,KAAK,OAAO,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC;IACnC,UAAU,KAAK,OAAO,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC;IACnC,UAAU,KAAK,OAAO,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC;IACnC,UAAU,KAAK,OAAO,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC;IACnC,WAAW,KAAK,OAAO,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC;IACrC,WAAW,KAAK,OAAO,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC;IACrC,WAAW,KAAK,OAAO,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC;IACrC,UAAU,KAAK,OAAO,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC;IACnC,YAAY,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC;IACvC,YAAY,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC;IACvC,YAAY,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC;IACvC,SAAS,KAAK,OAAO,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;IACjC,WAAW,KAAK,OAAO,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC;IACrC,oBAAoB,KAAK,OAAO,IAAI,CAAC,eAAe,CAAC,CAAC,CAAC;IACvD,SAAS,KAAK,OAAO,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC;IAClC,YAAY,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC;IACvC,oBAAoB,KAAK,OAAO,IAAI,CAAC,eAAe,CAAC,CAAC,CAAC;IACvD,cAAc,KAAK,OAAO,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC;IAC3C,oBAAoB,KAAK,OAAO,IAAI,CAAC,eAAe,CAAC,CAAC,CAAC;IACvD,yBAAyB,KAAK,OAAO,IAAI,CAAC,oBAAoB,CAAC,CAAC,CAAC;IACjE,yBAAyB,KAAK,OAAO,IAAI,CAAC,oBAAoB,CAAC,CAAC,CAAC;IACjE,wBAAwB,KAAK,OAAO,IAAI,CAAC,mBAAmB,CAAC,CAAC,CAAC;IAC/D,SAAS,KAAK,OAAO,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;IACjC,eAAe,KAAK,OAAO,IAAI,CAAC,UAAU,CAAC,CAAC,CAAC;IAC7C,oBAAoB,KAAK,OAAO,IAAI,CAAC,eAAe,CAAC,CAAC,CAAC;IACvD,oBAAoB,KAAK,OAAO,IAAI,CAAC,eAAe,CAAC,CAAC,CAAC;IACvD,mBAAmB,KAAK,OAAO,IAAI,CAAC,cAAc,CAAC,CAAC,CAAC;IACrD,YAAY,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC;IACvC,SAAS,KAAK,OAAO,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;IACjC,WAAW,KAAK,OAAO,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC;IACrC,UAAU,KAAK,OAAO,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC;IACnC,eAAe,KAAK,OAAO,IAAI,CAAC,UAAU,CAAC,CAAC,CAAC;IAC7C,gBAAgB,KAAK,OAAO,IAAI,CAAC,WAAW,CAAC,CAAC,CAAC;IAC/C,eAAe,KAAK,OAAO,IAAI,CAAC,UAAU,CAAC,CAAC,CAAC;IAC7C,aAAa,KAAK,OAAO,IAAI,CAAC,QAAQ,CAAC,CAAC,CAAC;IACzC,oBAAoB,KAAK,OAAO,IAAI,CAAC,eAAe,CAAC,CAAC,CAAC;IACvD,sBAAsB,KAAK,OAAO,IAAI,CAAC,iBAAiB,CAAC,CAAC,CAAC;IAC3D,kBAAkB,KAAK,OAAO,IAAI,CAAC,aAAa,CAAC,CAAC,CAAC;IACnD,QAAQ,KAAK,OAAO,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;CAC1C;AA5CD,wDA4CC;AAED,cAAc;AACD,QAAA,QAAQ,GAAG,IAAI,sBAAsB,EAAE,CAAC","file":"typector.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/typector.mjs b/igv_component/node_modules/apache-arrow/visitor/typector.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..b3ab0a3c156d84fb17e03456b34a87ec63e0884d
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typector.mjs
@@ -0,0 +1,68 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import * as type from '../type.mjs';
+import { Visitor } from '../visitor.mjs';
+/** @ignore */
+export class GetDataTypeConstructor extends Visitor {
+    visitNull() { return type.Null; }
+    visitBool() { return type.Bool; }
+    visitInt() { return type.Int; }
+    visitInt8() { return type.Int8; }
+    visitInt16() { return type.Int16; }
+    visitInt32() { return type.Int32; }
+    visitInt64() { return type.Int64; }
+    visitUint8() { return type.Uint8; }
+    visitUint16() { return type.Uint16; }
+    visitUint32() { return type.Uint32; }
+    visitUint64() { return type.Uint64; }
+    visitFloat() { return type.Float; }
+    visitFloat16() { return type.Float16; }
+    visitFloat32() { return type.Float32; }
+    visitFloat64() { return type.Float64; }
+    visitUtf8() { return type.Utf8; }
+    visitBinary() { return type.Binary; }
+    visitFixedSizeBinary() { return type.FixedSizeBinary; }
+    visitDate() { return type.Date_; }
+    visitDateDay() { return type.DateDay; }
+    visitDateMillisecond() { return type.DateMillisecond; }
+    visitTimestamp() { return type.Timestamp; }
+    visitTimestampSecond() { return type.TimestampSecond; }
+    visitTimestampMillisecond() { return type.TimestampMillisecond; }
+    visitTimestampMicrosecond() { return type.TimestampMicrosecond; }
+    visitTimestampNanosecond() { return type.TimestampNanosecond; }
+    visitTime() { return type.Time; }
+    visitTimeSecond() { return type.TimeSecond; }
+    visitTimeMillisecond() { return type.TimeMillisecond; }
+    visitTimeMicrosecond() { return type.TimeMicrosecond; }
+    visitTimeNanosecond() { return type.TimeNanosecond; }
+    visitDecimal() { return type.Decimal; }
+    visitList() { return type.List; }
+    visitStruct() { return type.Struct; }
+    visitUnion() { return type.Union; }
+    visitDenseUnion() { return type.DenseUnion; }
+    visitSparseUnion() { return type.SparseUnion; }
+    visitDictionary() { return type.Dictionary; }
+    visitInterval() { return type.Interval; }
+    visitIntervalDayTime() { return type.IntervalDayTime; }
+    visitIntervalYearMonth() { return type.IntervalYearMonth; }
+    visitFixedSizeList() { return type.FixedSizeList; }
+    visitMap() { return type.Map_; }
+}
+/** @ignore */
+export const instance = new GetDataTypeConstructor();
+
+//# sourceMappingURL=typector.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/typector.mjs.map b/igv_component/node_modules/apache-arrow/visitor/typector.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..e6eb7764ac900ac3adbe8097502ea93091be269e
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/typector.mjs.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/typector.ts"],"names":[],"mappings":"AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;AAIrB,OAAO,KAAK,IAAI,MAAM,YAAY,CAAC;AAGnC,OAAO,EAAE,OAAO,EAAE,MAAM,eAAe,CAAC;AAWxC,cAAc;AACd,MAAM,OAAO,sBAAuB,SAAQ,OAAO;IACxC,SAAS,KAAK,OAAO,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;IACjC,SAAS,KAAK,OAAO,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;IACjC,QAAQ,KAAK,OAAO,IAAI,CAAC,GAAG,CAAC,CAAC,CAAC;IAC/B,SAAS,KAAK,OAAO,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;IACjC,UAAU,KAAK,OAAO,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC;IACnC,UAAU,KAAK,OAAO,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC;IACnC,UAAU,KAAK,OAAO,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC;IACnC,UAAU,KAAK,OAAO,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC;IACnC,WAAW,KAAK,OAAO,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC;IACrC,WAAW,KAAK,OAAO,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC;IACrC,WAAW,KAAK,OAAO,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC;IACrC,UAAU,KAAK,OAAO,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC;IACnC,YAAY,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC;IACvC,YAAY,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC;IACvC,YAAY,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC;IACvC,SAAS,KAAK,OAAO,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;IACjC,WAAW,KAAK,OAAO,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC;IACrC,oBAAoB,KAAK,OAAO,IAAI,CAAC,eAAe,CAAC,CAAC,CAAC;IACvD,SAAS,KAAK,OAAO,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC;IAClC,YAAY,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC;IACvC,oBAAoB,KAAK,OAAO,IAAI,CAAC,eAAe,CAAC,CAAC,CAAC;IACvD,cAAc,KAAK,OAAO,IAAI,CAAC,SAAS,CAAC,CAAC,CAAC;IAC3C,oBAAoB,KAAK,OAAO,IAAI,CAAC,eAAe,CAAC,CAAC,CAAC;IACvD,yBAAyB,KAAK,OAAO,IAAI,CAAC,oBAAoB,CAAC,CAAC,CAAC;IACjE,yBAAyB,KAAK,OAAO,IAAI,CAAC,oBAAoB,CAAC,CAAC,CAAC;IACjE,wBAAwB,KAAK,OAAO,IAAI,CAAC,mBAAmB,CAAC,CAAC,CAAC;IAC/D,SAAS,KAAK,OAAO,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;IACjC,eAAe,KAAK,OAAO,IAAI,CAAC,UAAU,CAAC,CAAC,CAAC;IAC7C,oBAAoB,KAAK,OAAO,IAAI,CAAC,eAAe,CAAC,CAAC,CAAC;IACvD,oBAAoB,KAAK,OAAO,IAAI,CAAC,eAAe,CAAC,CAAC,CAAC;IACvD,mBAAmB,KAAK,OAAO,IAAI,CAAC,cAAc,CAAC,CAAC,CAAC;IACrD,YAAY,KAAK,OAAO,IAAI,CAAC,OAAO,CAAC,CAAC,CAAC;IACvC,SAAS,KAAK,OAAO,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;IACjC,WAAW,KAAK,OAAO,IAAI,CAAC,MAAM,CAAC,CAAC,CAAC;IACrC,UAAU,KAAK,OAAO,IAAI,CAAC,KAAK,CAAC,CAAC,CAAC;IACnC,eAAe,KAAK,OAAO,IAAI,CAAC,UAAU,CAAC,CAAC,CAAC;IAC7C,gBAAgB,KAAK,OAAO,IAAI,CAAC,WAAW,CAAC,CAAC,CAAC;IAC/C,eAAe,KAAK,OAAO,IAAI,CAAC,UAAU,CAAC,CAAC,CAAC;IAC7C,aAAa,KAAK,OAAO,IAAI,CAAC,QAAQ,CAAC,CAAC,CAAC;IACzC,oBAAoB,KAAK,OAAO,IAAI,CAAC,eAAe,CAAC,CAAC,CAAC;IACvD,sBAAsB,KAAK,OAAO,IAAI,CAAC,iBAAiB,CAAC,CAAC,CAAC;IAC3D,kBAAkB,KAAK,OAAO,IAAI,CAAC,aAAa,CAAC,CAAC,CAAC;IACnD,QAAQ,KAAK,OAAO,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC;CAC1C;AAED,cAAc;AACd,MAAM,CAAC,MAAM,QAAQ,GAAG,IAAI,sBAAsB,EAAE,CAAC","file":"typector.js","sourceRoot":"../src"}
\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/vectorassembler.d.ts b/igv_component/node_modules/apache-arrow/visitor/vectorassembler.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..da8c1c8172dc7a47455a112a863f2b0963f62da3
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/vectorassembler.d.ts
@@ -0,0 +1,47 @@
+import { Data } from '../data.js';
+import { Vector } from '../vector.js';
+import { Visitor } from '../visitor.js';
+import { Type } from '../enum.js';
+import { RecordBatch } from '../recordbatch.js';
+import { TypeToDataType } from '../interfaces.js';
+import { BufferRegion, FieldNode } from '../ipc/metadata/message.js';
+import { DataType, Dictionary, Float, Int, Date_, Interval, Time, Timestamp, Union, Bool, Null, Utf8, Binary, Decimal, FixedSizeBinary, List, FixedSizeList, Map_, Struct } from '../type.js';
+/** @ignore */
+export interface VectorAssembler extends Visitor {
+    visit<T extends DataType>(node: Vector<T> | Data<T>): this;
+    visitMany<T extends DataType>(nodes: readonly Data<T>[]): this[];
+    getVisitFn<T extends Type>(node: T): (data: Data<TypeToDataType<T>>) => this;
+    getVisitFn<T extends DataType>(node: Vector<T> | Data<T> | T): (data: Data<T>) => this;
+    visitBool<T extends Bool>(data: Data<T>): this;
+    visitInt<T extends Int>(data: Data<T>): this;
+    visitFloat<T extends Float>(data: Data<T>): this;
+    visitUtf8<T extends Utf8>(data: Data<T>): this;
+    visitBinary<T extends Binary>(data: Data<T>): this;
+    visitFixedSizeBinary<T extends FixedSizeBinary>(data: Data<T>): this;
+    visitDate<T extends Date_>(data: Data<T>): this;
+    visitTimestamp<T extends Timestamp>(data: Data<T>): this;
+    visitTime<T extends Time>(data: Data<T>): this;
+    visitDecimal<T extends Decimal>(data: Data<T>): this;
+    visitList<T extends List>(data: Data<T>): this;
+    visitStruct<T extends Struct>(data: Data<T>): this;
+    visitUnion<T extends Union>(data: Data<T>): this;
+    visitInterval<T extends Interval>(data: Data<T>): this;
+    visitFixedSizeList<T extends FixedSizeList>(data: Data<T>): this;
+    visitMap<T extends Map_>(data: Data<T>): this;
+}
+/** @ignore */
+export declare class VectorAssembler extends Visitor {
+    /** @nocollapse */
+    static assemble<T extends Vector | RecordBatch>(...args: (T | T[])[]): VectorAssembler;
+    private constructor();
+    visitNull<T extends Null>(_null: Data<T>): this;
+    visitDictionary<T extends Dictionary>(data: Data<T>): this;
+    get nodes(): FieldNode[];
+    get buffers(): ArrayBufferView[];
+    get byteLength(): number;
+    get bufferRegions(): BufferRegion[];
+    protected _byteLength: number;
+    protected _nodes: FieldNode[];
+    protected _buffers: ArrayBufferView[];
+    protected _bufferRegions: BufferRegion[];
+}
diff --git a/igv_component/node_modules/apache-arrow/visitor/vectorassembler.d.ts.map b/igv_component/node_modules/apache-arrow/visitor/vectorassembler.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..567614ecee0731e06d307deb71d11f097e8b9524
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/vectorassembler.d.ts.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/vectorassembler.js b/igv_component/node_modules/apache-arrow/visitor/vectorassembler.js
new file mode 100644
index 0000000000000000000000000000000000000000..2f8313a5f0985a7502ad832fed59dad8d3cc5554
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/vectorassembler.js
@@ -0,0 +1,202 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.VectorAssembler = void 0;
+const vector_js_1 = require("../vector.js");
+const visitor_js_1 = require("../visitor.js");
+const enum_js_1 = require("../enum.js");
+const recordbatch_js_1 = require("../recordbatch.js");
+const buffer_js_1 = require("../util/buffer.js");
+const bit_js_1 = require("../util/bit.js");
+const message_js_1 = require("../ipc/metadata/message.js");
+const type_js_1 = require("../type.js");
+/** @ignore */
+class VectorAssembler extends visitor_js_1.Visitor {
+    constructor() {
+        super();
+        this._byteLength = 0;
+        this._nodes = [];
+        this._buffers = [];
+        this._bufferRegions = [];
+    }
+    /** @nocollapse */
+    static assemble(...args) {
+        const unwrap = (nodes) => nodes.flatMap((node) => Array.isArray(node) ? unwrap(node) :
+            (node instanceof recordbatch_js_1.RecordBatch) ? node.data.children : node.data);
+        const assembler = new VectorAssembler();
+        assembler.visitMany(unwrap(args));
+        return assembler;
+    }
+    visit(data) {
+        if (data instanceof vector_js_1.Vector) {
+            this.visitMany(data.data);
+            return this;
+        }
+        const { type } = data;
+        if (!type_js_1.DataType.isDictionary(type)) {
+            const { length, nullCount } = data;
+            if (length > 2147483647) {
+                /* istanbul ignore next */
+                throw new RangeError('Cannot write arrays larger than 2^31 - 1 in length');
+            }
+            if (!type_js_1.DataType.isNull(type)) {
+                addBuffer.call(this, nullCount <= 0
+                    ? new Uint8Array(0) // placeholder validity buffer
+                    : (0, bit_js_1.truncateBitmap)(data.offset, length, data.nullBitmap));
+            }
+            this.nodes.push(new message_js_1.FieldNode(length, nullCount));
+        }
+        return super.visit(data);
+    }
+    visitNull(_null) {
+        return this;
+    }
+    visitDictionary(data) {
+        // Assemble the indices here, Dictionary assembled separately.
+        return this.visit(data.clone(data.type.indices));
+    }
+    get nodes() { return this._nodes; }
+    get buffers() { return this._buffers; }
+    get byteLength() { return this._byteLength; }
+    get bufferRegions() { return this._bufferRegions; }
+}
+exports.VectorAssembler = VectorAssembler;
+/** @ignore */
+function addBuffer(values) {
+    const byteLength = (values.byteLength + 7) & ~7; // Round up to a multiple of 8
+    this.buffers.push(values);
+    this.bufferRegions.push(new message_js_1.BufferRegion(this._byteLength, byteLength));
+    this._byteLength += byteLength;
+    return this;
+}
+/** @ignore */
+function assembleUnion(data) {
+    const { type, length, typeIds, valueOffsets } = data;
+    // All Union Vectors have a typeIds buffer
+    addBuffer.call(this, typeIds);
+    // If this is a Sparse Union, treat it like all other Nested types
+    if (type.mode === enum_js_1.UnionMode.Sparse) {
+        return assembleNestedVector.call(this, data);
+    }
+    else if (type.mode === enum_js_1.UnionMode.Dense) {
+        // If this is a Dense Union, add the valueOffsets buffer and potentially slice the children
+        if (data.offset <= 0) {
+            // If the Vector hasn't been sliced, write the existing valueOffsets
+            addBuffer.call(this, valueOffsets);
+            // We can treat this like all other Nested types
+            return assembleNestedVector.call(this, data);
+        }
+        else {
+            // A sliced Dense Union is an unpleasant case. Because the offsets are different for
+            // each child vector, we need to "rebase" the valueOffsets for each child
+            // Union typeIds are not necessary 0-indexed
+            const maxChildTypeId = typeIds.reduce((x, y) => Math.max(x, y), typeIds[0]);
+            const childLengths = new Int32Array(maxChildTypeId + 1);
+            // Set all to -1 to indicate that we haven't observed a first occurrence of a particular child yet
+            const childOffsets = new Int32Array(maxChildTypeId + 1).fill(-1);
+            const shiftedOffsets = new Int32Array(length);
+            // If we have a non-zero offset, then the value offsets do not start at
+            // zero. We must a) create a new offsets array with shifted offsets and
+            // b) slice the values array accordingly
+            const unshiftedOffsets = (0, buffer_js_1.rebaseValueOffsets)(-valueOffsets[0], length, valueOffsets);
+            for (let typeId, shift, index = -1; ++index < length;) {
+                if ((shift = childOffsets[typeId = typeIds[index]]) === -1) {
+                    shift = childOffsets[typeId] = unshiftedOffsets[typeId];
+                }
+                shiftedOffsets[index] = unshiftedOffsets[index] - shift;
+                ++childLengths[typeId];
+            }
+            addBuffer.call(this, shiftedOffsets);
+            // Slice and visit children accordingly
+            for (let child, childIndex = -1, numChildren = type.children.length; ++childIndex < numChildren;) {
+                if (child = data.children[childIndex]) {
+                    const typeId = type.typeIds[childIndex];
+                    const childLength = Math.min(length, childLengths[typeId]);
+                    this.visit(child.slice(childOffsets[typeId], childLength));
+                }
+            }
+        }
+    }
+    return this;
+}
+/** @ignore */
+function assembleBoolVector(data) {
+    // Bool vector is a special case of FlatVector, as its data buffer needs to stay packed
+    let values;
+    if (data.nullCount >= data.length) {
+        // If all values are null, just insert a placeholder empty data buffer (fastest path)
+        return addBuffer.call(this, new Uint8Array(0));
+    }
+    else if ((values = data.values) instanceof Uint8Array) {
+        // If values is already a Uint8Array, slice the bitmap (fast path)
+        return addBuffer.call(this, (0, bit_js_1.truncateBitmap)(data.offset, data.length, values));
+    }
+    // Otherwise if the underlying data *isn't* a Uint8Array, enumerate the
+    // values as bools and re-pack them into a Uint8Array. This code isn't
+    // reachable unless you're trying to manipulate the Data internals,
+    // we're only doing this for safety.
+    /* istanbul ignore next */
+    return addBuffer.call(this, (0, bit_js_1.packBools)(data.values));
+}
+/** @ignore */
+function assembleFlatVector(data) {
+    return addBuffer.call(this, data.values.subarray(0, data.length * data.stride));
+}
+/** @ignore */
+function assembleFlatListVector(data) {
+    const { length, values, valueOffsets } = data;
+    const firstOffset = valueOffsets[0];
+    const lastOffset = valueOffsets[length];
+    const byteLength = Math.min(lastOffset - firstOffset, values.byteLength - firstOffset);
+    // Push in the order FlatList types read their buffers
+    addBuffer.call(this, (0, buffer_js_1.rebaseValueOffsets)(-valueOffsets[0], length, valueOffsets)); // valueOffsets buffer first
+    addBuffer.call(this, values.subarray(firstOffset, firstOffset + byteLength)); // sliced values buffer second
+    return this;
+}
+/** @ignore */
+function assembleListVector(data) {
+    const { length, valueOffsets } = data;
+    // If we have valueOffsets (MapVector, ListVector), push that buffer first
+    if (valueOffsets) {
+        addBuffer.call(this, (0, buffer_js_1.rebaseValueOffsets)(valueOffsets[0], length, valueOffsets));
+    }
+    // Then insert the List's values child
+    return this.visit(data.children[0]);
+}
+/** @ignore */
+function assembleNestedVector(data) {
+    return this.visitMany(data.type.children.map((_, i) => data.children[i]).filter(Boolean))[0];
+}
+VectorAssembler.prototype.visitBool = assembleBoolVector;
+VectorAssembler.prototype.visitInt = assembleFlatVector;
+VectorAssembler.prototype.visitFloat = assembleFlatVector;
+VectorAssembler.prototype.visitUtf8 = assembleFlatListVector;
+VectorAssembler.prototype.visitBinary = assembleFlatListVector;
+VectorAssembler.prototype.visitFixedSizeBinary = assembleFlatVector;
+VectorAssembler.prototype.visitDate = assembleFlatVector;
+VectorAssembler.prototype.visitTimestamp = assembleFlatVector;
+VectorAssembler.prototype.visitTime = assembleFlatVector;
+VectorAssembler.prototype.visitDecimal = assembleFlatVector;
+VectorAssembler.prototype.visitList = assembleListVector;
+VectorAssembler.prototype.visitStruct = assembleNestedVector;
+VectorAssembler.prototype.visitUnion = assembleUnion;
+VectorAssembler.prototype.visitInterval = assembleFlatVector;
+VectorAssembler.prototype.visitFixedSizeList = assembleListVector;
+VectorAssembler.prototype.visitMap = assembleListVector;
+
+//# sourceMappingURL=vectorassembler.js.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/vectorassembler.js.map b/igv_component/node_modules/apache-arrow/visitor/vectorassembler.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..f1e59ce8c198e1814e2a131a201d71955f12d079
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/vectorassembler.js.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/vectorassembler.mjs b/igv_component/node_modules/apache-arrow/visitor/vectorassembler.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..ac8c10b981191f6ffd4bdab24cac7224c81b2005
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/vectorassembler.mjs
@@ -0,0 +1,198 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { Vector } from '../vector.mjs';
+import { Visitor } from '../visitor.mjs';
+import { UnionMode } from '../enum.mjs';
+import { RecordBatch } from '../recordbatch.mjs';
+import { rebaseValueOffsets } from '../util/buffer.mjs';
+import { packBools, truncateBitmap } from '../util/bit.mjs';
+import { BufferRegion, FieldNode } from '../ipc/metadata/message.mjs';
+import { DataType, } from '../type.mjs';
+/** @ignore */
+export class VectorAssembler extends Visitor {
+    constructor() {
+        super();
+        this._byteLength = 0;
+        this._nodes = [];
+        this._buffers = [];
+        this._bufferRegions = [];
+    }
+    /** @nocollapse */
+    static assemble(...args) {
+        const unwrap = (nodes) => nodes.flatMap((node) => Array.isArray(node) ? unwrap(node) :
+            (node instanceof RecordBatch) ? node.data.children : node.data);
+        const assembler = new VectorAssembler();
+        assembler.visitMany(unwrap(args));
+        return assembler;
+    }
+    visit(data) {
+        if (data instanceof Vector) {
+            this.visitMany(data.data);
+            return this;
+        }
+        const { type } = data;
+        if (!DataType.isDictionary(type)) {
+            const { length, nullCount } = data;
+            if (length > 2147483647) {
+                /* istanbul ignore next */
+                throw new RangeError('Cannot write arrays larger than 2^31 - 1 in length');
+            }
+            if (!DataType.isNull(type)) {
+                addBuffer.call(this, nullCount <= 0
+                    ? new Uint8Array(0) // placeholder validity buffer
+                    : truncateBitmap(data.offset, length, data.nullBitmap));
+            }
+            this.nodes.push(new FieldNode(length, nullCount));
+        }
+        return super.visit(data);
+    }
+    visitNull(_null) {
+        return this;
+    }
+    visitDictionary(data) {
+        // Assemble the indices here, Dictionary assembled separately.
+        return this.visit(data.clone(data.type.indices));
+    }
+    get nodes() { return this._nodes; }
+    get buffers() { return this._buffers; }
+    get byteLength() { return this._byteLength; }
+    get bufferRegions() { return this._bufferRegions; }
+}
+/** @ignore */
+function addBuffer(values) {
+    const byteLength = (values.byteLength + 7) & ~7; // Round up to a multiple of 8
+    this.buffers.push(values);
+    this.bufferRegions.push(new BufferRegion(this._byteLength, byteLength));
+    this._byteLength += byteLength;
+    return this;
+}
+/** @ignore */
+function assembleUnion(data) {
+    const { type, length, typeIds, valueOffsets } = data;
+    // All Union Vectors have a typeIds buffer
+    addBuffer.call(this, typeIds);
+    // If this is a Sparse Union, treat it like all other Nested types
+    if (type.mode === UnionMode.Sparse) {
+        return assembleNestedVector.call(this, data);
+    }
+    else if (type.mode === UnionMode.Dense) {
+        // If this is a Dense Union, add the valueOffsets buffer and potentially slice the children
+        if (data.offset <= 0) {
+            // If the Vector hasn't been sliced, write the existing valueOffsets
+            addBuffer.call(this, valueOffsets);
+            // We can treat this like all other Nested types
+            return assembleNestedVector.call(this, data);
+        }
+        else {
+            // A sliced Dense Union is an unpleasant case. Because the offsets are different for
+            // each child vector, we need to "rebase" the valueOffsets for each child
+            // Union typeIds are not necessary 0-indexed
+            const maxChildTypeId = typeIds.reduce((x, y) => Math.max(x, y), typeIds[0]);
+            const childLengths = new Int32Array(maxChildTypeId + 1);
+            // Set all to -1 to indicate that we haven't observed a first occurrence of a particular child yet
+            const childOffsets = new Int32Array(maxChildTypeId + 1).fill(-1);
+            const shiftedOffsets = new Int32Array(length);
+            // If we have a non-zero offset, then the value offsets do not start at
+            // zero. We must a) create a new offsets array with shifted offsets and
+            // b) slice the values array accordingly
+            const unshiftedOffsets = rebaseValueOffsets(-valueOffsets[0], length, valueOffsets);
+            for (let typeId, shift, index = -1; ++index < length;) {
+                if ((shift = childOffsets[typeId = typeIds[index]]) === -1) {
+                    shift = childOffsets[typeId] = unshiftedOffsets[typeId];
+                }
+                shiftedOffsets[index] = unshiftedOffsets[index] - shift;
+                ++childLengths[typeId];
+            }
+            addBuffer.call(this, shiftedOffsets);
+            // Slice and visit children accordingly
+            for (let child, childIndex = -1, numChildren = type.children.length; ++childIndex < numChildren;) {
+                if (child = data.children[childIndex]) {
+                    const typeId = type.typeIds[childIndex];
+                    const childLength = Math.min(length, childLengths[typeId]);
+                    this.visit(child.slice(childOffsets[typeId], childLength));
+                }
+            }
+        }
+    }
+    return this;
+}
+/** @ignore */
+function assembleBoolVector(data) {
+    // Bool vector is a special case of FlatVector, as its data buffer needs to stay packed
+    let values;
+    if (data.nullCount >= data.length) {
+        // If all values are null, just insert a placeholder empty data buffer (fastest path)
+        return addBuffer.call(this, new Uint8Array(0));
+    }
+    else if ((values = data.values) instanceof Uint8Array) {
+        // If values is already a Uint8Array, slice the bitmap (fast path)
+        return addBuffer.call(this, truncateBitmap(data.offset, data.length, values));
+    }
+    // Otherwise if the underlying data *isn't* a Uint8Array, enumerate the
+    // values as bools and re-pack them into a Uint8Array. This code isn't
+    // reachable unless you're trying to manipulate the Data internals,
+    // we're only doing this for safety.
+    /* istanbul ignore next */
+    return addBuffer.call(this, packBools(data.values));
+}
+/** @ignore */
+function assembleFlatVector(data) {
+    return addBuffer.call(this, data.values.subarray(0, data.length * data.stride));
+}
+/** @ignore */
+function assembleFlatListVector(data) {
+    const { length, values, valueOffsets } = data;
+    const firstOffset = valueOffsets[0];
+    const lastOffset = valueOffsets[length];
+    const byteLength = Math.min(lastOffset - firstOffset, values.byteLength - firstOffset);
+    // Push in the order FlatList types read their buffers
+    addBuffer.call(this, rebaseValueOffsets(-valueOffsets[0], length, valueOffsets)); // valueOffsets buffer first
+    addBuffer.call(this, values.subarray(firstOffset, firstOffset + byteLength)); // sliced values buffer second
+    return this;
+}
+/** @ignore */
+function assembleListVector(data) {
+    const { length, valueOffsets } = data;
+    // If we have valueOffsets (MapVector, ListVector), push that buffer first
+    if (valueOffsets) {
+        addBuffer.call(this, rebaseValueOffsets(valueOffsets[0], length, valueOffsets));
+    }
+    // Then insert the List's values child
+    return this.visit(data.children[0]);
+}
+/** @ignore */
+function assembleNestedVector(data) {
+    return this.visitMany(data.type.children.map((_, i) => data.children[i]).filter(Boolean))[0];
+}
+VectorAssembler.prototype.visitBool = assembleBoolVector;
+VectorAssembler.prototype.visitInt = assembleFlatVector;
+VectorAssembler.prototype.visitFloat = assembleFlatVector;
+VectorAssembler.prototype.visitUtf8 = assembleFlatListVector;
+VectorAssembler.prototype.visitBinary = assembleFlatListVector;
+VectorAssembler.prototype.visitFixedSizeBinary = assembleFlatVector;
+VectorAssembler.prototype.visitDate = assembleFlatVector;
+VectorAssembler.prototype.visitTimestamp = assembleFlatVector;
+VectorAssembler.prototype.visitTime = assembleFlatVector;
+VectorAssembler.prototype.visitDecimal = assembleFlatVector;
+VectorAssembler.prototype.visitList = assembleListVector;
+VectorAssembler.prototype.visitStruct = assembleNestedVector;
+VectorAssembler.prototype.visitUnion = assembleUnion;
+VectorAssembler.prototype.visitInterval = assembleFlatVector;
+VectorAssembler.prototype.visitFixedSizeList = assembleListVector;
+VectorAssembler.prototype.visitMap = assembleListVector;
+
+//# sourceMappingURL=vectorassembler.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/vectorassembler.mjs.map b/igv_component/node_modules/apache-arrow/visitor/vectorassembler.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..fa7a09db0b257af01f0db667e2219474e0f5d6fe
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/vectorassembler.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/vectorloader.d.ts b/igv_component/node_modules/apache-arrow/visitor/vectorloader.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..29440a623f692a8016311210994500839be3e959
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/vectorloader.d.ts
@@ -0,0 +1,58 @@
+import { Data } from '../data.js';
+import * as type from '../type.js';
+import { Field } from '../schema.js';
+import { Vector } from '../vector.js';
+import { DataType } from '../type.js';
+import { Visitor } from '../visitor.js';
+import { BufferRegion, FieldNode } from '../ipc/metadata/message.js';
+/** @ignore */
+export interface VectorLoader extends Visitor {
+    visit<T extends DataType>(node: Field<T> | T): Data<T>;
+    visitMany<T extends DataType>(nodes: (Field<T> | T)[]): Data<T>[];
+}
+/** @ignore */
+export declare class VectorLoader extends Visitor {
+    private bytes;
+    private nodes;
+    private nodesIndex;
+    private buffers;
+    private buffersIndex;
+    private dictionaries;
+    constructor(bytes: Uint8Array, nodes: FieldNode[], buffers: BufferRegion[], dictionaries: Map<number, Vector<any>>);
+    visitNull<T extends type.Null>(type: T, { length }?: FieldNode): Data<T>;
+    visitBool<T extends type.Bool>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    visitInt<T extends type.Int>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    visitFloat<T extends type.Float>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    visitUtf8<T extends type.Utf8>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    visitBinary<T extends type.Binary>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    visitFixedSizeBinary<T extends type.FixedSizeBinary>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    visitDate<T extends type.Date_>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    visitTimestamp<T extends type.Timestamp>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    visitTime<T extends type.Time>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    visitDecimal<T extends type.Decimal>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    visitList<T extends type.List>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    visitStruct<T extends type.Struct>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    visitUnion<T extends type.Union>(type: T): Data<type.DenseUnion> | Data<type.SparseUnion>;
+    visitDenseUnion<T extends type.DenseUnion>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    visitSparseUnion<T extends type.SparseUnion>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    visitDictionary<T extends type.Dictionary>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    visitInterval<T extends type.Interval>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    visitFixedSizeList<T extends type.FixedSizeList>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    visitMap<T extends type.Map_>(type: T, { length, nullCount }?: FieldNode): Data<T>;
+    protected nextFieldNode(): FieldNode;
+    protected nextBufferRange(): BufferRegion;
+    protected readNullBitmap<T extends DataType>(type: T, nullCount: number, buffer?: BufferRegion): Uint8Array;
+    protected readOffsets<T extends DataType>(type: T, buffer?: BufferRegion): Uint8Array;
+    protected readTypeIds<T extends DataType>(type: T, buffer?: BufferRegion): Uint8Array;
+    protected readData<T extends DataType>(_type: T, { length, offset }?: BufferRegion): Uint8Array;
+    protected readDictionary<T extends type.Dictionary>(type: T): Vector<T['dictionary']>;
+}
+/** @ignore */
+export declare class JSONVectorLoader extends VectorLoader {
+    private sources;
+    constructor(sources: any[][], nodes: FieldNode[], buffers: BufferRegion[], dictionaries: Map<number, Vector<any>>);
+    protected readNullBitmap<T extends DataType>(_type: T, nullCount: number, { offset }?: BufferRegion): Uint8Array;
+    protected readOffsets<T extends DataType>(_type: T, { offset }?: BufferRegion): any;
+    protected readTypeIds<T extends DataType>(type: T, { offset }?: BufferRegion): any;
+    protected readData<T extends DataType>(type: T, { offset }?: BufferRegion): any;
+}
diff --git a/igv_component/node_modules/apache-arrow/visitor/vectorloader.d.ts.map b/igv_component/node_modules/apache-arrow/visitor/vectorloader.d.ts.map
new file mode 100644
index 0000000000000000000000000000000000000000..5fdd7d930886436944e3d2ae625c562dc8549469
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/vectorloader.d.ts.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/vectorloader.js b/igv_component/node_modules/apache-arrow/visitor/vectorloader.js
new file mode 100644
index 0000000000000000000000000000000000000000..ed326933da0588668a306b42619a724c72e1e2f5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/vectorloader.js
@@ -0,0 +1,173 @@
+"use strict";
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.JSONVectorLoader = exports.VectorLoader = void 0;
+const data_js_1 = require("../data.js");
+const schema_js_1 = require("../schema.js");
+const type_js_1 = require("../type.js");
+const visitor_js_1 = require("../visitor.js");
+const bit_js_1 = require("../util/bit.js");
+const utf8_js_1 = require("../util/utf8.js");
+const int_js_1 = require("../util/int.js");
+const enum_js_1 = require("../enum.js");
+const buffer_js_1 = require("../util/buffer.js");
+/** @ignore */
+class VectorLoader extends visitor_js_1.Visitor {
+    constructor(bytes, nodes, buffers, dictionaries) {
+        super();
+        this.nodesIndex = -1;
+        this.buffersIndex = -1;
+        this.bytes = bytes;
+        this.nodes = nodes;
+        this.buffers = buffers;
+        this.dictionaries = dictionaries;
+    }
+    visit(node) {
+        return super.visit(node instanceof schema_js_1.Field ? node.type : node);
+    }
+    visitNull(type, { length } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length });
+    }
+    visitBool(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitInt(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitFloat(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitUtf8(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), valueOffsets: this.readOffsets(type), data: this.readData(type) });
+    }
+    visitBinary(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), valueOffsets: this.readOffsets(type), data: this.readData(type) });
+    }
+    visitFixedSizeBinary(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitDate(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitTimestamp(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitTime(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitDecimal(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitList(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), valueOffsets: this.readOffsets(type), 'child': this.visit(type.children[0]) });
+    }
+    visitStruct(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), children: this.visitMany(type.children) });
+    }
+    visitUnion(type) {
+        return type.mode === enum_js_1.UnionMode.Sparse ? this.visitSparseUnion(type) : this.visitDenseUnion(type);
+    }
+    visitDenseUnion(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), typeIds: this.readTypeIds(type), valueOffsets: this.readOffsets(type), children: this.visitMany(type.children) });
+    }
+    visitSparseUnion(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), typeIds: this.readTypeIds(type), children: this.visitMany(type.children) });
+    }
+    visitDictionary(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type.indices), dictionary: this.readDictionary(type) });
+    }
+    visitInterval(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitFixedSizeList(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), 'child': this.visit(type.children[0]) });
+    }
+    visitMap(type, { length, nullCount } = this.nextFieldNode()) {
+        return (0, data_js_1.makeData)({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), valueOffsets: this.readOffsets(type), 'child': this.visit(type.children[0]) });
+    }
+    nextFieldNode() { return this.nodes[++this.nodesIndex]; }
+    nextBufferRange() { return this.buffers[++this.buffersIndex]; }
+    readNullBitmap(type, nullCount, buffer = this.nextBufferRange()) {
+        return nullCount > 0 && this.readData(type, buffer) || new Uint8Array(0);
+    }
+    readOffsets(type, buffer) { return this.readData(type, buffer); }
+    readTypeIds(type, buffer) { return this.readData(type, buffer); }
+    readData(_type, { length, offset } = this.nextBufferRange()) {
+        return this.bytes.subarray(offset, offset + length);
+    }
+    readDictionary(type) {
+        return this.dictionaries.get(type.id);
+    }
+}
+exports.VectorLoader = VectorLoader;
+/** @ignore */
+class JSONVectorLoader extends VectorLoader {
+    constructor(sources, nodes, buffers, dictionaries) {
+        super(new Uint8Array(0), nodes, buffers, dictionaries);
+        this.sources = sources;
+    }
+    readNullBitmap(_type, nullCount, { offset } = this.nextBufferRange()) {
+        return nullCount <= 0 ? new Uint8Array(0) : (0, bit_js_1.packBools)(this.sources[offset]);
+    }
+    readOffsets(_type, { offset } = this.nextBufferRange()) {
+        return (0, buffer_js_1.toArrayBufferView)(Uint8Array, (0, buffer_js_1.toArrayBufferView)(Int32Array, this.sources[offset]));
+    }
+    readTypeIds(type, { offset } = this.nextBufferRange()) {
+        return (0, buffer_js_1.toArrayBufferView)(Uint8Array, (0, buffer_js_1.toArrayBufferView)(type.ArrayType, this.sources[offset]));
+    }
+    readData(type, { offset } = this.nextBufferRange()) {
+        const { sources } = this;
+        if (type_js_1.DataType.isTimestamp(type)) {
+            return (0, buffer_js_1.toArrayBufferView)(Uint8Array, int_js_1.Int64.convertArray(sources[offset]));
+        }
+        else if ((type_js_1.DataType.isInt(type) || type_js_1.DataType.isTime(type)) && type.bitWidth === 64) {
+            return (0, buffer_js_1.toArrayBufferView)(Uint8Array, int_js_1.Int64.convertArray(sources[offset]));
+        }
+        else if (type_js_1.DataType.isDate(type) && type.unit === enum_js_1.DateUnit.MILLISECOND) {
+            return (0, buffer_js_1.toArrayBufferView)(Uint8Array, int_js_1.Int64.convertArray(sources[offset]));
+        }
+        else if (type_js_1.DataType.isDecimal(type)) {
+            return (0, buffer_js_1.toArrayBufferView)(Uint8Array, int_js_1.Int128.convertArray(sources[offset]));
+        }
+        else if (type_js_1.DataType.isBinary(type) || type_js_1.DataType.isFixedSizeBinary(type)) {
+            return binaryDataFromJSON(sources[offset]);
+        }
+        else if (type_js_1.DataType.isBool(type)) {
+            return (0, bit_js_1.packBools)(sources[offset]);
+        }
+        else if (type_js_1.DataType.isUtf8(type)) {
+            return (0, utf8_js_1.encodeUtf8)(sources[offset].join(''));
+        }
+        return (0, buffer_js_1.toArrayBufferView)(Uint8Array, (0, buffer_js_1.toArrayBufferView)(type.ArrayType, sources[offset].map((x) => +x)));
+    }
+}
+exports.JSONVectorLoader = JSONVectorLoader;
+/** @ignore */
+function binaryDataFromJSON(values) {
+    // "DATA": ["49BC7D5B6C47D2","3F5FB6D9322026"]
+    // There are definitely more efficient ways to do this... but it gets the
+    // job done.
+    const joined = values.join('');
+    const data = new Uint8Array(joined.length / 2);
+    for (let i = 0; i < joined.length; i += 2) {
+        data[i >> 1] = Number.parseInt(joined.slice(i, i + 2), 16);
+    }
+    return data;
+}
+
+//# sourceMappingURL=vectorloader.js.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/vectorloader.js.map b/igv_component/node_modules/apache-arrow/visitor/vectorloader.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..38126d7573173e02aa2e58689e25d25b94f9cdd5
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/vectorloader.js.map
@@ -0,0 +1 @@
+{"version":3,"sources":["visitor/vectorloader.ts"],"names":[],"mappings":";AAAA,6DAA6D;AAC7D,+DAA+D;AAC/D,wDAAwD;AACxD,6DAA6D;AAC7D,oDAAoD;AACpD,6DAA6D;AAC7D,6DAA6D;AAC7D,EAAE;AACF,+CAA+C;AAC/C,EAAE;AACF,6DAA6D;AAC7D,8DAA8D;AAC9D,yDAAyD;AACzD,4DAA4D;AAC5D,0DAA0D;AAC1D,qBAAqB;;;AAErB,wCAA4C;AAE5C,4CAAqC;AAErC,wCAAsC;AACtC,8CAAwC;AACxC,2CAA2C;AAC3C,6CAA6C;AAC7C,2CAA+C;AAC/C,wCAAiD;AACjD,iDAAsD;AAStD,cAAc;AACd,MAAa,YAAa,SAAQ,oBAAO;IAOrC,YAAY,KAAiB,EAAE,KAAkB,EAAE,OAAuB,EAAE,YAAsC;QAC9G,KAAK,EAAE,CAAC;QALJ,eAAU,GAAG,CAAC,CAAC,CAAC;QAEhB,iBAAY,GAAG,CAAC,CAAC,CAAC;QAItB,IAAI,CAAC,KAAK,GAAG,KAAK,CAAC;QACnB,IAAI,CAAC,KAAK,GAAG,KAAK,CAAC;QACnB,IAAI,CAAC,OAAO,GAAG,OAAO,CAAC;QACvB,IAAI,CAAC,YAAY,GAAG,YAAY,CAAC;IACrC,CAAC;IAEM,KAAK,CAAqB,IAAkB;QAC/C,OAAO,KAAK,CAAC,KAAK,CAAC,IAAI,YAAY,iBAAK,CAAC,CAAC,CAAC,IAAI,CAAC,IAAI,CAAC,CAAC,CAAC,IAAI,CAAC,CAAC;IACjE,CAAC;IAEM,SAAS,CAAsB,IAAO,EAAE,EAAE,MAAM,EAAE,GAAG,IAAI,CAAC,aAAa,EAAE;QAC5E,OAAO,IAAA,kBAAQ,EAAC,EAAE,IAAI,EAAE,MAAM,EAAE,CAAC,CAAC;IACtC,CAAC;IACM,SAAS,CAAsB,IAAO,EAAE,EAAE,MAAM,EAAE,SAAS,EAAE,GAAG,IAAI,CAAC,aAAa,EAAE;QACvF,OAAO,IAAA,kBAAQ,EAAC,EAAE,IAAI,EAAE,MAAM,EAAE,SAAS,EAAE,UAAU,EAAE,IAAI,CAAC,cAAc,CAAC,IAAI,EAAE,SAAS,CAAC,EAAE,IAAI,EAAE,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC;IAC9H,CAAC;IACM,QAAQ,CAAqB,IAAO,EAAE,EAAE,MAAM,EAAE,SAAS,EAAE,GAAG,IAAI,CAAC,aAAa,EAAE;QACrF,OAAO,IAAA,kBAAQ,EAAC,EAAE,IAAI,EAAE,MAAM,EAAE,SAAS,EAAE,UAAU,EAAE,IAAI,CAAC,cAAc,CAAC,IAAI,EAAE,SAAS,CAAC,EAAE,IAAI,EAAE,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC;IAC9H,CAAC;IACM,UAAU,CAAuB,IAAO,EAAE,EAAE,MAAM,EAAE,SAAS,EAAE,GAAG,IAAI,CAAC,aAAa,EAAE;QACzF,OAAO,IAAA,kBAAQ,EAAC,EAAE,IAAI,EAAE,MAAM,EAAE,SAAS,EAAE,UAAU,EAAE,IAAI,CAAC,cAAc,CAAC,IAAI,EAAE,SAAS,CAAC,EAAE,IAAI,EAAE,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC;IAC9H,CAAC;IACM,SAAS,CAAsB,IAAO,EAAE,EAAE,MAAM,EAAE,SAAS,EAAE,GAAG,IAAI,CAAC,aAAa,EAAE;QACvF,OAAO,IAAA,kBAAQ,EAAC,EAAE,IAAI,EAAE,MAAM,EAAE,SAAS,EAAE,UAAU,EAAE,IAAI,CAAC,cAAc,CAAC,IAAI,EAAE,SAAS,CAAC,EAAE,YAAY,EAAE,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,EAAE,IAAI,EAAE,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC;IACpK,CAAC;IACM,WAAW,CAAwB,IAAO,EAAE,EAAE,MAAM,EAAE,SAAS,EAAE,GAAG,IAAI,CAAC,aAAa,EAAE;QAC3F,OAAO,IAAA,kBAAQ,EAAC,EAAE,IAAI,EAAE,MAAM,EAAE,SAAS,EAAE,UAAU,EAAE,IAAI,CAAC,cAAc,CAAC,IAAI,EAAE,SAAS,CAAC,EAAE,YAAY,EAAE,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,EAAE,IAAI,EAAE,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC;IACpK,CAAC;IACM,oBAAoB,CAAiC,IAAO,EAAE,EAAE,MAAM,EAAE,SAAS,EAAE,GAAG,IAAI,CAAC,aAAa,EAAE;QAC7G,OAAO,IAAA,kBAAQ,EAAC,EAAE,IAAI,EAAE,MAAM,EAAE,SAAS,EAAE,UAAU,EAAE,IAAI,CAAC,cAAc,CAAC,IAAI,EAAE,SAAS,CAAC,EAAE,IAAI,EAAE,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC;IAC9H,CAAC;IACM,SAAS,CAAuB,IAAO,EAAE,EAAE,MAAM,EAAE,SAAS,EAAE,GAAG,IAAI,CAAC,aAAa,EAAE;QACxF,OAAO,IAAA,kBAAQ,EAAC,EAAE,IAAI,EAAE,MAAM,EAAE,SAAS,EAAE,UAAU,EAAE,IAAI,CAAC,cAAc,CAAC,IAAI,EAAE,SAAS,CAAC,EAAE,IAAI,EAAE,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC;IAC9H,CAAC;IACM,cAAc,CAA2B,IAAO,EAAE,EAAE,MAAM,EAAE,SAAS,EAAE,GAAG,IAAI,CAAC,aAAa,EAAE;QACjG,OAAO,IAAA,kBAAQ,EAAC,EAAE,IAAI,EAAE,MAAM,EAAE,SAAS,EAAE,UAAU,EAAE,IAAI,CAAC,cAAc,CAAC,IAAI,EAAE,SAAS,CAAC,EAAE,IAAI,EAAE,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC;IAC9H,CAAC;IACM,SAAS,CAAsB,IAAO,EAAE,EAAE,MAAM,EAAE,SAAS,EAAE,GAAG,IAAI,CAAC,aAAa,EAAE;QACvF,OAAO,IAAA,kBAAQ,EAAC,EAAE,IAAI,EAAE,MAAM,EAAE,SAAS,EAAE,UAAU,EAAE,IAAI,CAAC,cAAc,CAAC,IAAI,EAAE,SAAS,CAAC,EAAE,IAAI,EAAE,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC;IAC9H,CAAC;IACM,YAAY,CAAyB,IAAO,EAAE,EAAE,MAAM,EAAE,SAAS,EAAE,GAAG,IAAI,CAAC,aAAa,EAAE;QAC7F,OAAO,IAAA,kBAAQ,EAAC,EAAE,IAAI,EAAE,MAAM,EAAE,SAAS,EAAE,UAAU,EAAE,IAAI,CAAC,cAAc,CAAC,IAAI,EAAE,SAAS,CAAC,EAAE,IAAI,EAAE,IAAI,CAAC,QAAQ,CAAC,IAAI,CAAC,EAAE,CAAC,CAAC;IAC9H,CAAC;IACM,SAAS,CAAsB,IAAO,EAAE,EAAE,MAAM,EAAE,SAAS,EAAE,GAAG,IAAI,CAAC,aAAa,EAAE;QACvF,OAAO,IAAA,kBAAQ,EAAC,EAAE,IAAI,EAAE,MAAM,EAAE,SAAS,EAAE,UAAU,EAAE,IAAI,CAAC,cAAc,CAAC,IAAI,EAAE,SAAS,CAAC,EAAE,YAAY,EAAE,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,EAAE,OAAO,EAAE,IAAI,CAAC,KAAK,CAAC,IAAI,CAAC,QAAQ,CAAC,CAAC,CAAC,CAAC,EAAE,CAAC,CAAC;IAChL,CAAC;IACM,WAAW,CAAwB,IAAO,EAAE,EAAE,MAAM,EAAE,SAAS,EAAE,GAAG,IAAI,CAAC,aAAa,EAAE;QAC3F,OAAO,IAAA,kBAAQ,EAAC,EAAE,IAAI,EAAE,MAAM,EAAE,SAAS,EAAE,UAAU,EAAE,IAAI,CAAC,cAAc,CAAC,IAAI,EAAE,SAAS,CAAC,EAAE,QAAQ,EAAE,IAAI,CAAC,SAAS,CAAC,IAAI,CAAC,QAAQ,CAAC,EAAE,CAAC,CAAC;IAC5I,CAAC;IACM,UAAU,CAAuB,IAAO;QAC3C,OAAO,IAAI,CAAC,IAAI,KAAK,mBAAS,CAAC,MAAM,CAAC,CAAC,CAAC,IAAI,CAAC,gBAAgB,CAAC,IAAwB,CAAC,CAAC,CAAC,CAAC,IAAI,CAAC,eAAe,CAAC,IAAuB,CAAC,CAAC;IAC5I,CAAC;IACM,eAAe,CAA4B,IAAO,EAAE,EAAE,MAAM,EAAE,SAAS,EAAE,GAAG,IAAI,CAAC,aAAa,EAAE;QACnG,OAAO,IAAA,kBAAQ,EAAC,EAAE,IAAI,EAAE,MAAM,EAAE,SAAS,EAAE,UAAU,EAAE,IAAI,CAAC,cAAc,CAAC,IAAI,EAAE,SAAS,CAAC,EAAE,OAAO,EAAE,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,EAAE,YAAY,EAAE,IAAI,CAAC,WAAW,CAAC,IAAI,CAAC,EAAE,QAAQ,EAAE,IAAI,CAAC,SAAS,CAAC,IAAI,CAAC,QAAQ,CAAC,EAAE,CAAC,CAAC;IACnN,CAAC;IACM,gBAAgB,CAA6B,IAAO,EAAE,EAAE,MAAM,EAAE,SAAS,EAAE,GAAG,IAAI,CAAC,aAAa,EAAE;QACrG,OAAO,IAAA,kBAAQ,EAAC,EAAE,IAAI,EAAE,MAAM,EAAE,SAAS,EAAE,UAAU,EAAE,IAAI,CAAC,cAAc,CAAC,IAAI,EAAE,SAA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\ No newline at end of file
diff --git a/igv_component/node_modules/apache-arrow/visitor/vectorloader.mjs b/igv_component/node_modules/apache-arrow/visitor/vectorloader.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..188e4e62eb4a0ae68be28d71025f9db2b605e5aa
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/vectorloader.mjs
@@ -0,0 +1,168 @@
+// Licensed to the Apache Software Foundation (ASF) under one
+// or more contributor license agreements.  See the NOTICE file
+// distributed with this work for additional information
+// regarding copyright ownership.  The ASF licenses this file
+// to you under the Apache License, Version 2.0 (the
+// "License"); you may not use this file except in compliance
+// with the License.  You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing,
+// software distributed under the License is distributed on an
+// "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+// KIND, either express or implied.  See the License for the
+// specific language governing permissions and limitations
+// under the License.
+import { makeData } from '../data.mjs';
+import { Field } from '../schema.mjs';
+import { DataType } from '../type.mjs';
+import { Visitor } from '../visitor.mjs';
+import { packBools } from '../util/bit.mjs';
+import { encodeUtf8 } from '../util/utf8.mjs';
+import { Int64, Int128 } from '../util/int.mjs';
+import { UnionMode, DateUnit } from '../enum.mjs';
+import { toArrayBufferView } from '../util/buffer.mjs';
+/** @ignore */
+export class VectorLoader extends Visitor {
+    constructor(bytes, nodes, buffers, dictionaries) {
+        super();
+        this.nodesIndex = -1;
+        this.buffersIndex = -1;
+        this.bytes = bytes;
+        this.nodes = nodes;
+        this.buffers = buffers;
+        this.dictionaries = dictionaries;
+    }
+    visit(node) {
+        return super.visit(node instanceof Field ? node.type : node);
+    }
+    visitNull(type, { length } = this.nextFieldNode()) {
+        return makeData({ type, length });
+    }
+    visitBool(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitInt(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitFloat(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitUtf8(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), valueOffsets: this.readOffsets(type), data: this.readData(type) });
+    }
+    visitBinary(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), valueOffsets: this.readOffsets(type), data: this.readData(type) });
+    }
+    visitFixedSizeBinary(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitDate(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitTimestamp(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitTime(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitDecimal(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitList(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), valueOffsets: this.readOffsets(type), 'child': this.visit(type.children[0]) });
+    }
+    visitStruct(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), children: this.visitMany(type.children) });
+    }
+    visitUnion(type) {
+        return type.mode === UnionMode.Sparse ? this.visitSparseUnion(type) : this.visitDenseUnion(type);
+    }
+    visitDenseUnion(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), typeIds: this.readTypeIds(type), valueOffsets: this.readOffsets(type), children: this.visitMany(type.children) });
+    }
+    visitSparseUnion(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), typeIds: this.readTypeIds(type), children: this.visitMany(type.children) });
+    }
+    visitDictionary(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type.indices), dictionary: this.readDictionary(type) });
+    }
+    visitInterval(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), data: this.readData(type) });
+    }
+    visitFixedSizeList(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), 'child': this.visit(type.children[0]) });
+    }
+    visitMap(type, { length, nullCount } = this.nextFieldNode()) {
+        return makeData({ type, length, nullCount, nullBitmap: this.readNullBitmap(type, nullCount), valueOffsets: this.readOffsets(type), 'child': this.visit(type.children[0]) });
+    }
+    nextFieldNode() { return this.nodes[++this.nodesIndex]; }
+    nextBufferRange() { return this.buffers[++this.buffersIndex]; }
+    readNullBitmap(type, nullCount, buffer = this.nextBufferRange()) {
+        return nullCount > 0 && this.readData(type, buffer) || new Uint8Array(0);
+    }
+    readOffsets(type, buffer) { return this.readData(type, buffer); }
+    readTypeIds(type, buffer) { return this.readData(type, buffer); }
+    readData(_type, { length, offset } = this.nextBufferRange()) {
+        return this.bytes.subarray(offset, offset + length);
+    }
+    readDictionary(type) {
+        return this.dictionaries.get(type.id);
+    }
+}
+/** @ignore */
+export class JSONVectorLoader extends VectorLoader {
+    constructor(sources, nodes, buffers, dictionaries) {
+        super(new Uint8Array(0), nodes, buffers, dictionaries);
+        this.sources = sources;
+    }
+    readNullBitmap(_type, nullCount, { offset } = this.nextBufferRange()) {
+        return nullCount <= 0 ? new Uint8Array(0) : packBools(this.sources[offset]);
+    }
+    readOffsets(_type, { offset } = this.nextBufferRange()) {
+        return toArrayBufferView(Uint8Array, toArrayBufferView(Int32Array, this.sources[offset]));
+    }
+    readTypeIds(type, { offset } = this.nextBufferRange()) {
+        return toArrayBufferView(Uint8Array, toArrayBufferView(type.ArrayType, this.sources[offset]));
+    }
+    readData(type, { offset } = this.nextBufferRange()) {
+        const { sources } = this;
+        if (DataType.isTimestamp(type)) {
+            return toArrayBufferView(Uint8Array, Int64.convertArray(sources[offset]));
+        }
+        else if ((DataType.isInt(type) || DataType.isTime(type)) && type.bitWidth === 64) {
+            return toArrayBufferView(Uint8Array, Int64.convertArray(sources[offset]));
+        }
+        else if (DataType.isDate(type) && type.unit === DateUnit.MILLISECOND) {
+            return toArrayBufferView(Uint8Array, Int64.convertArray(sources[offset]));
+        }
+        else if (DataType.isDecimal(type)) {
+            return toArrayBufferView(Uint8Array, Int128.convertArray(sources[offset]));
+        }
+        else if (DataType.isBinary(type) || DataType.isFixedSizeBinary(type)) {
+            return binaryDataFromJSON(sources[offset]);
+        }
+        else if (DataType.isBool(type)) {
+            return packBools(sources[offset]);
+        }
+        else if (DataType.isUtf8(type)) {
+            return encodeUtf8(sources[offset].join(''));
+        }
+        return toArrayBufferView(Uint8Array, toArrayBufferView(type.ArrayType, sources[offset].map((x) => +x)));
+    }
+}
+/** @ignore */
+function binaryDataFromJSON(values) {
+    // "DATA": ["49BC7D5B6C47D2","3F5FB6D9322026"]
+    // There are definitely more efficient ways to do this... but it gets the
+    // job done.
+    const joined = values.join('');
+    const data = new Uint8Array(joined.length / 2);
+    for (let i = 0; i < joined.length; i += 2) {
+        data[i >> 1] = Number.parseInt(joined.slice(i, i + 2), 16);
+    }
+    return data;
+}
+
+//# sourceMappingURL=vectorloader.mjs.map
diff --git a/igv_component/node_modules/apache-arrow/visitor/vectorloader.mjs.map b/igv_component/node_modules/apache-arrow/visitor/vectorloader.mjs.map
new file mode 100644
index 0000000000000000000000000000000000000000..ad41858bfa88c2090404c27b1da28df475c329c6
--- /dev/null
+++ b/igv_component/node_modules/apache-arrow/visitor/vectorloader.mjs.map
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/igv_component/node_modules/array-back/LICENSE b/igv_component/node_modules/array-back/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..203018f1e665160f2a3a51ff1fe91e9717af0b78
--- /dev/null
+++ b/igv_component/node_modules/array-back/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015-19 Lloyd Brookes <75pound@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/igv_component/node_modules/array-back/README.hbs b/igv_component/node_modules/array-back/README.hbs
new file mode 100644
index 0000000000000000000000000000000000000000..dc32d2a1030c3d3bc59ff5b2edd24444510372ca
--- /dev/null
+++ b/igv_component/node_modules/array-back/README.hbs
@@ -0,0 +1,40 @@
+[![view on npm](https://img.shields.io/npm/v/array-back.svg)](https://www.npmjs.org/package/array-back)
+[![npm module downloads](https://img.shields.io/npm/dt/array-back.svg)](https://www.npmjs.org/package/array-back)
+[![Build Status](https://travis-ci.org/75lb/array-back.svg?branch=master)](https://travis-ci.org/75lb/array-back)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/array-back/badge.svg?branch=master)](https://coveralls.io/github/75lb/array-back?branch=master)
+[![Dependency Status](https://david-dm.org/75lb/array-back.svg)](https://david-dm.org/75lb/array-back)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+{{>main}}
+
+### Load anywhere
+
+This library is compatible with Node.js, the Web and any style of module loader. It can be loaded anywhere, natively without transpilation.
+
+Node.js:
+
+```js
+const arrayify = require('array-back')
+```
+
+Within Node.js with ECMAScript Module support enabled:
+
+```js
+import arrayify from 'array-back'
+```
+
+Within an modern browser ECMAScript Module:
+
+```js
+import arrayify from './node_modules/array-back/index.mjs'
+```
+
+Old browser (adds `window.arrayBack`):
+
+```html
+<script nomodule src="./node_modules/array-back/dist/index.js"></script>
+```
+
+* * *
+
+&copy; 2015-19 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/75lb/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/array-back/README.md b/igv_component/node_modules/array-back/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..9860b1cf0981f5fea90199fbb658306cae8ffb60
--- /dev/null
+++ b/igv_component/node_modules/array-back/README.md
@@ -0,0 +1,81 @@
+[![view on npm](https://img.shields.io/npm/v/array-back.svg)](https://www.npmjs.org/package/array-back)
+[![npm module downloads](https://img.shields.io/npm/dt/array-back.svg)](https://www.npmjs.org/package/array-back)
+[![Build Status](https://travis-ci.org/75lb/array-back.svg?branch=master)](https://travis-ci.org/75lb/array-back)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/array-back/badge.svg?branch=master)](https://coveralls.io/github/75lb/array-back?branch=master)
+[![Dependency Status](https://david-dm.org/75lb/array-back.svg)](https://david-dm.org/75lb/array-back)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+<a name="module_array-back"></a>
+
+## array-back
+Takes any input and guarantees an array back.
+
+- Converts array-like objects (e.g. `arguments`, `Set`) to a real array.
+- Converts `undefined` to an empty array.
+- Converts any another other, singular value (including `null`, objects and iterables other than `Set`) into an array containing that value.
+- Ignores input which is already an array.
+
+**Example**  
+```js
+> const arrayify = require('array-back')
+
+> arrayify(undefined)
+[]
+
+> arrayify(null)
+[ null ]
+
+> arrayify(0)
+[ 0 ]
+
+> arrayify([ 1, 2 ])
+[ 1, 2 ]
+
+> arrayify(new Set([ 1, 2 ]))
+[ 1, 2 ]
+
+> function f(){ return arrayify(arguments); }
+> f(1,2,3)
+[ 1, 2, 3 ]
+```
+<a name="exp_module_array-back--arrayify"></a>
+
+### arrayify(input) ⇒ <code>Array</code> ⏏
+**Kind**: Exported function  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | The input value to convert to an array |
+
+
+### Load anywhere
+
+This library is compatible with Node.js, the Web and any style of module loader. It can be loaded anywhere, natively without transpilation.
+
+Node.js:
+
+```js
+const arrayify = require('array-back')
+```
+
+Within Node.js with ECMAScript Module support enabled:
+
+```js
+import arrayify from 'array-back'
+```
+
+Within an modern browser ECMAScript Module:
+
+```js
+import arrayify from './node_modules/array-back/index.mjs'
+```
+
+Old browser (adds `window.arrayBack`):
+
+```html
+<script nomodule src="./node_modules/array-back/dist/index.js"></script>
+```
+
+* * *
+
+&copy; 2015-19 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/75lb/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/array-back/dist/index.js b/igv_component/node_modules/array-back/dist/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..0848d2d920b9dcc5f5515a1ff5289984a56a8e77
--- /dev/null
+++ b/igv_component/node_modules/array-back/dist/index.js
@@ -0,0 +1,70 @@
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global = global || self, global.arrayBack = factory());
+}(this, function () { 'use strict';
+
+  /**
+   * Takes any input and guarantees an array back.
+   *
+   * - Converts array-like objects (e.g. `arguments`, `Set`) to a real array.
+   * - Converts `undefined` to an empty array.
+   * - Converts any another other, singular value (including `null`, objects and iterables other than `Set`) into an array containing that value.
+   * - Ignores input which is already an array.
+   *
+   * @module array-back
+   * @example
+   * > const arrayify = require('array-back')
+   *
+   * > arrayify(undefined)
+   * []
+   *
+   * > arrayify(null)
+   * [ null ]
+   *
+   * > arrayify(0)
+   * [ 0 ]
+   *
+   * > arrayify([ 1, 2 ])
+   * [ 1, 2 ]
+   *
+   * > arrayify(new Set([ 1, 2 ]))
+   * [ 1, 2 ]
+   *
+   * > function f(){ return arrayify(arguments); }
+   * > f(1,2,3)
+   * [ 1, 2, 3 ]
+   */
+
+  function isObject (input) {
+    return typeof input === 'object' && input !== null
+  }
+
+  function isArrayLike (input) {
+    return isObject(input) && typeof input.length === 'number'
+  }
+
+  /**
+   * @param {*} - The input value to convert to an array
+   * @returns {Array}
+   * @alias module:array-back
+   */
+  function arrayify (input) {
+    if (Array.isArray(input)) {
+      return input
+    }
+
+    if (input === undefined) {
+      return []
+    }
+
+    if (isArrayLike(input) || input instanceof Set) {
+      return Array.from(input)
+    }
+
+    return [ input ]
+  }
+
+  return arrayify;
+
+}));
diff --git a/igv_component/node_modules/array-back/index.mjs b/igv_component/node_modules/array-back/index.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..d937eba01b16e82776734b0e88b20117ed99fe48
--- /dev/null
+++ b/igv_component/node_modules/array-back/index.mjs
@@ -0,0 +1,62 @@
+/**
+ * Takes any input and guarantees an array back.
+ *
+ * - Converts array-like objects (e.g. `arguments`, `Set`) to a real array.
+ * - Converts `undefined` to an empty array.
+ * - Converts any another other, singular value (including `null`, objects and iterables other than `Set`) into an array containing that value.
+ * - Ignores input which is already an array.
+ *
+ * @module array-back
+ * @example
+ * > const arrayify = require('array-back')
+ *
+ * > arrayify(undefined)
+ * []
+ *
+ * > arrayify(null)
+ * [ null ]
+ *
+ * > arrayify(0)
+ * [ 0 ]
+ *
+ * > arrayify([ 1, 2 ])
+ * [ 1, 2 ]
+ *
+ * > arrayify(new Set([ 1, 2 ]))
+ * [ 1, 2 ]
+ *
+ * > function f(){ return arrayify(arguments); }
+ * > f(1,2,3)
+ * [ 1, 2, 3 ]
+ */
+
+function isObject (input) {
+  return typeof input === 'object' && input !== null
+}
+
+function isArrayLike (input) {
+  return isObject(input) && typeof input.length === 'number'
+}
+
+/**
+ * @param {*} - The input value to convert to an array
+ * @returns {Array}
+ * @alias module:array-back
+ */
+function arrayify (input) {
+  if (Array.isArray(input)) {
+    return input
+  }
+
+  if (input === undefined) {
+    return []
+  }
+
+  if (isArrayLike(input) || input instanceof Set) {
+    return Array.from(input)
+  }
+
+  return [ input ]
+}
+
+export default arrayify
diff --git a/igv_component/node_modules/array-back/package.json b/igv_component/node_modules/array-back/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..787cac0d7c9c4354a6333e6256d217fa3a167f3c
--- /dev/null
+++ b/igv_component/node_modules/array-back/package.json
@@ -0,0 +1,46 @@
+{
+  "name": "array-back",
+  "author": "Lloyd Brookes <75pound@gmail.com>",
+  "version": "3.1.0",
+  "description": "Guarantees an array back",
+  "repository": "https://github.com/75lb/array-back.git",
+  "license": "MIT",
+  "main": "dist/index.js",
+  "keywords": [
+    "to",
+    "convert",
+    "return",
+    "array",
+    "arrayify"
+  ],
+  "engines": {
+    "node": ">=6"
+  },
+  "files": [
+    "index.mjs",
+    "dist/index.js"
+  ],
+  "scripts": {
+    "test": "npm run test:esm && npm run test:js",
+    "test:esm": "node --experimental-modules test.mjs",
+    "test:js": "npm run dist:test && node dist/test.js",
+    "docs": "jsdoc2md -t README.hbs index.mjs -c build/jsdoc.conf > README.md; echo",
+    "cover": "nyc test-runner test.js && nyc report --reporter=text-lcov | coveralls",
+    "dist": "rollup -c build/index.config.js",
+    "dist:test": "rollup -c build/test.config.js",
+    "lint": "standard **/*.mjs"
+  },
+  "dependencies": {},
+  "devDependencies": {
+    "coveralls": "^3.0.3",
+    "jsdoc-to-markdown": "^4.0.1",
+    "rollup": "^1.9.0",
+    "test-runner": "^0.5.1"
+  },
+  "standard": {
+    "ignore": [
+      "dist",
+      "build"
+    ]
+  }
+}
diff --git a/igv_component/node_modules/chalk/index.js b/igv_component/node_modules/chalk/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..1cc5fa89a951596647e711d84cf88b1410e4d3ea
--- /dev/null
+++ b/igv_component/node_modules/chalk/index.js
@@ -0,0 +1,228 @@
+'use strict';
+const escapeStringRegexp = require('escape-string-regexp');
+const ansiStyles = require('ansi-styles');
+const stdoutColor = require('supports-color').stdout;
+
+const template = require('./templates.js');
+
+const isSimpleWindowsTerm = process.platform === 'win32' && !(process.env.TERM || '').toLowerCase().startsWith('xterm');
+
+// `supportsColor.level` → `ansiStyles.color[name]` mapping
+const levelMapping = ['ansi', 'ansi', 'ansi256', 'ansi16m'];
+
+// `color-convert` models to exclude from the Chalk API due to conflicts and such
+const skipModels = new Set(['gray']);
+
+const styles = Object.create(null);
+
+function applyOptions(obj, options) {
+	options = options || {};
+
+	// Detect level if not set manually
+	const scLevel = stdoutColor ? stdoutColor.level : 0;
+	obj.level = options.level === undefined ? scLevel : options.level;
+	obj.enabled = 'enabled' in options ? options.enabled : obj.level > 0;
+}
+
+function Chalk(options) {
+	// We check for this.template here since calling `chalk.constructor()`
+	// by itself will have a `this` of a previously constructed chalk object
+	if (!this || !(this instanceof Chalk) || this.template) {
+		const chalk = {};
+		applyOptions(chalk, options);
+
+		chalk.template = function () {
+			const args = [].slice.call(arguments);
+			return chalkTag.apply(null, [chalk.template].concat(args));
+		};
+
+		Object.setPrototypeOf(chalk, Chalk.prototype);
+		Object.setPrototypeOf(chalk.template, chalk);
+
+		chalk.template.constructor = Chalk;
+
+		return chalk.template;
+	}
+
+	applyOptions(this, options);
+}
+
+// Use bright blue on Windows as the normal blue color is illegible
+if (isSimpleWindowsTerm) {
+	ansiStyles.blue.open = '\u001B[94m';
+}
+
+for (const key of Object.keys(ansiStyles)) {
+	ansiStyles[key].closeRe = new RegExp(escapeStringRegexp(ansiStyles[key].close), 'g');
+
+	styles[key] = {
+		get() {
+			const codes = ansiStyles[key];
+			return build.call(this, this._styles ? this._styles.concat(codes) : [codes], this._empty, key);
+		}
+	};
+}
+
+styles.visible = {
+	get() {
+		return build.call(this, this._styles || [], true, 'visible');
+	}
+};
+
+ansiStyles.color.closeRe = new RegExp(escapeStringRegexp(ansiStyles.color.close), 'g');
+for (const model of Object.keys(ansiStyles.color.ansi)) {
+	if (skipModels.has(model)) {
+		continue;
+	}
+
+	styles[model] = {
+		get() {
+			const level = this.level;
+			return function () {
+				const open = ansiStyles.color[levelMapping[level]][model].apply(null, arguments);
+				const codes = {
+					open,
+					close: ansiStyles.color.close,
+					closeRe: ansiStyles.color.closeRe
+				};
+				return build.call(this, this._styles ? this._styles.concat(codes) : [codes], this._empty, model);
+			};
+		}
+	};
+}
+
+ansiStyles.bgColor.closeRe = new RegExp(escapeStringRegexp(ansiStyles.bgColor.close), 'g');
+for (const model of Object.keys(ansiStyles.bgColor.ansi)) {
+	if (skipModels.has(model)) {
+		continue;
+	}
+
+	const bgModel = 'bg' + model[0].toUpperCase() + model.slice(1);
+	styles[bgModel] = {
+		get() {
+			const level = this.level;
+			return function () {
+				const open = ansiStyles.bgColor[levelMapping[level]][model].apply(null, arguments);
+				const codes = {
+					open,
+					close: ansiStyles.bgColor.close,
+					closeRe: ansiStyles.bgColor.closeRe
+				};
+				return build.call(this, this._styles ? this._styles.concat(codes) : [codes], this._empty, model);
+			};
+		}
+	};
+}
+
+const proto = Object.defineProperties(() => {}, styles);
+
+function build(_styles, _empty, key) {
+	const builder = function () {
+		return applyStyle.apply(builder, arguments);
+	};
+
+	builder._styles = _styles;
+	builder._empty = _empty;
+
+	const self = this;
+
+	Object.defineProperty(builder, 'level', {
+		enumerable: true,
+		get() {
+			return self.level;
+		},
+		set(level) {
+			self.level = level;
+		}
+	});
+
+	Object.defineProperty(builder, 'enabled', {
+		enumerable: true,
+		get() {
+			return self.enabled;
+		},
+		set(enabled) {
+			self.enabled = enabled;
+		}
+	});
+
+	// See below for fix regarding invisible grey/dim combination on Windows
+	builder.hasGrey = this.hasGrey || key === 'gray' || key === 'grey';
+
+	// `__proto__` is used because we must return a function, but there is
+	// no way to create a function with a different prototype
+	builder.__proto__ = proto; // eslint-disable-line no-proto
+
+	return builder;
+}
+
+function applyStyle() {
+	// Support varags, but simply cast to string in case there's only one arg
+	const args = arguments;
+	const argsLen = args.length;
+	let str = String(arguments[0]);
+
+	if (argsLen === 0) {
+		return '';
+	}
+
+	if (argsLen > 1) {
+		// Don't slice `arguments`, it prevents V8 optimizations
+		for (let a = 1; a < argsLen; a++) {
+			str += ' ' + args[a];
+		}
+	}
+
+	if (!this.enabled || this.level <= 0 || !str) {
+		return this._empty ? '' : str;
+	}
+
+	// Turns out that on Windows dimmed gray text becomes invisible in cmd.exe,
+	// see https://github.com/chalk/chalk/issues/58
+	// If we're on Windows and we're dealing with a gray color, temporarily make 'dim' a noop.
+	const originalDim = ansiStyles.dim.open;
+	if (isSimpleWindowsTerm && this.hasGrey) {
+		ansiStyles.dim.open = '';
+	}
+
+	for (const code of this._styles.slice().reverse()) {
+		// Replace any instances already present with a re-opening code
+		// otherwise only the part of the string until said closing code
+		// will be colored, and the rest will simply be 'plain'.
+		str = code.open + str.replace(code.closeRe, code.open) + code.close;
+
+		// Close the styling before a linebreak and reopen
+		// after next line to fix a bleed issue on macOS
+		// https://github.com/chalk/chalk/pull/92
+		str = str.replace(/\r?\n/g, `${code.close}$&${code.open}`);
+	}
+
+	// Reset the original `dim` if we changed it to work around the Windows dimmed gray issue
+	ansiStyles.dim.open = originalDim;
+
+	return str;
+}
+
+function chalkTag(chalk, strings) {
+	if (!Array.isArray(strings)) {
+		// If chalk() was called by itself or with a string,
+		// return the string itself as a string.
+		return [].slice.call(arguments, 1).join(' ');
+	}
+
+	const args = [].slice.call(arguments, 2);
+	const parts = [strings.raw[0]];
+
+	for (let i = 1; i < strings.length; i++) {
+		parts.push(String(args[i - 1]).replace(/[{}\\]/g, '\\$&'));
+		parts.push(String(strings.raw[i]));
+	}
+
+	return template(chalk, parts.join(''));
+}
+
+Object.defineProperties(Chalk.prototype, styles);
+
+module.exports = Chalk(); // eslint-disable-line new-cap
+module.exports.supportsColor = stdoutColor;
+module.exports.default = module.exports; // For TypeScript
diff --git a/igv_component/node_modules/chalk/index.js.flow b/igv_component/node_modules/chalk/index.js.flow
new file mode 100644
index 0000000000000000000000000000000000000000..622caaa2e803f3b451f617a391b61383925e05d3
--- /dev/null
+++ b/igv_component/node_modules/chalk/index.js.flow
@@ -0,0 +1,93 @@
+// @flow strict
+
+type TemplateStringsArray = $ReadOnlyArray<string>;
+
+export type Level = $Values<{
+	None: 0,
+	Basic: 1,
+	Ansi256: 2,
+	TrueColor: 3
+}>;
+
+export type ChalkOptions = {|
+	enabled?: boolean,
+	level?: Level
+|};
+
+export type ColorSupport = {|
+	level: Level,
+	hasBasic: boolean,
+	has256: boolean,
+	has16m: boolean
+|};
+
+export interface Chalk {
+	(...text: string[]): string,
+	(text: TemplateStringsArray, ...placeholders: string[]): string,
+	constructor(options?: ChalkOptions): Chalk,
+	enabled: boolean,
+	level: Level,
+	rgb(r: number, g: number, b: number): Chalk,
+	hsl(h: number, s: number, l: number): Chalk,
+	hsv(h: number, s: number, v: number): Chalk,
+	hwb(h: number, w: number, b: number): Chalk,
+	bgHex(color: string): Chalk,
+	bgKeyword(color: string): Chalk,
+	bgRgb(r: number, g: number, b: number): Chalk,
+	bgHsl(h: number, s: number, l: number): Chalk,
+	bgHsv(h: number, s: number, v: number): Chalk,
+	bgHwb(h: number, w: number, b: number): Chalk,
+	hex(color: string): Chalk,
+	keyword(color: string): Chalk,
+
+	+reset: Chalk,
+	+bold: Chalk,
+	+dim: Chalk,
+	+italic: Chalk,
+	+underline: Chalk,
+	+inverse: Chalk,
+	+hidden: Chalk,
+	+strikethrough: Chalk,
+
+	+visible: Chalk,
+
+	+black: Chalk,
+	+red: Chalk,
+	+green: Chalk,
+	+yellow: Chalk,
+	+blue: Chalk,
+	+magenta: Chalk,
+	+cyan: Chalk,
+	+white: Chalk,
+	+gray: Chalk,
+	+grey: Chalk,
+	+blackBright: Chalk,
+	+redBright: Chalk,
+	+greenBright: Chalk,
+	+yellowBright: Chalk,
+	+blueBright: Chalk,
+	+magentaBright: Chalk,
+	+cyanBright: Chalk,
+	+whiteBright: Chalk,
+
+	+bgBlack: Chalk,
+	+bgRed: Chalk,
+	+bgGreen: Chalk,
+	+bgYellow: Chalk,
+	+bgBlue: Chalk,
+	+bgMagenta: Chalk,
+	+bgCyan: Chalk,
+	+bgWhite: Chalk,
+	+bgBlackBright: Chalk,
+	+bgRedBright: Chalk,
+	+bgGreenBright: Chalk,
+	+bgYellowBright: Chalk,
+	+bgBlueBright: Chalk,
+	+bgMagentaBright: Chalk,
+	+bgCyanBright: Chalk,
+	+bgWhiteBrigh: Chalk,
+
+	supportsColor: ColorSupport
+};
+
+declare module.exports: Chalk;
diff --git a/igv_component/node_modules/chalk/license b/igv_component/node_modules/chalk/license
new file mode 100644
index 0000000000000000000000000000000000000000..e7af2f77107d73046421ef56c4684cbfdd3c1e89
--- /dev/null
+++ b/igv_component/node_modules/chalk/license
@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/igv_component/node_modules/chalk/package.json b/igv_component/node_modules/chalk/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..bc324685a7625f038c2e960e3aae9580dece77b9
--- /dev/null
+++ b/igv_component/node_modules/chalk/package.json
@@ -0,0 +1,71 @@
+{
+	"name": "chalk",
+	"version": "2.4.2",
+	"description": "Terminal string styling done right",
+	"license": "MIT",
+	"repository": "chalk/chalk",
+	"engines": {
+		"node": ">=4"
+	},
+	"scripts": {
+		"test": "xo && tsc --project types && flow --max-warnings=0 && nyc ava",
+		"bench": "matcha benchmark.js",
+		"coveralls": "nyc report --reporter=text-lcov | coveralls"
+	},
+	"files": [
+		"index.js",
+		"templates.js",
+		"types/index.d.ts",
+		"index.js.flow"
+	],
+	"keywords": [
+		"color",
+		"colour",
+		"colors",
+		"terminal",
+		"console",
+		"cli",
+		"string",
+		"str",
+		"ansi",
+		"style",
+		"styles",
+		"tty",
+		"formatting",
+		"rgb",
+		"256",
+		"shell",
+		"xterm",
+		"log",
+		"logging",
+		"command-line",
+		"text"
+	],
+	"dependencies": {
+		"ansi-styles": "^3.2.1",
+		"escape-string-regexp": "^1.0.5",
+		"supports-color": "^5.3.0"
+	},
+	"devDependencies": {
+		"ava": "*",
+		"coveralls": "^3.0.0",
+		"execa": "^0.9.0",
+		"flow-bin": "^0.68.0",
+		"import-fresh": "^2.0.0",
+		"matcha": "^0.7.0",
+		"nyc": "^11.0.2",
+		"resolve-from": "^4.0.0",
+		"typescript": "^2.5.3",
+		"xo": "*"
+	},
+	"types": "types/index.d.ts",
+	"xo": {
+		"envs": [
+			"node",
+			"mocha"
+		],
+		"ignores": [
+			"test/_flow.js"
+		]
+	}
+}
diff --git a/igv_component/node_modules/chalk/readme.md b/igv_component/node_modules/chalk/readme.md
new file mode 100644
index 0000000000000000000000000000000000000000..d298e2c48d64a0ce10744fbae5129782f00d6908
--- /dev/null
+++ b/igv_component/node_modules/chalk/readme.md
@@ -0,0 +1,314 @@
+<h1 align="center">
+	<br>
+	<br>
+	<img width="320" src="media/logo.svg" alt="Chalk">
+	<br>
+	<br>
+	<br>
+</h1>
+
+> Terminal string styling done right
+
+[![Build Status](https://travis-ci.org/chalk/chalk.svg?branch=master)](https://travis-ci.org/chalk/chalk) [![Coverage Status](https://coveralls.io/repos/github/chalk/chalk/badge.svg?branch=master)](https://coveralls.io/github/chalk/chalk?branch=master) [![](https://img.shields.io/badge/unicorn-approved-ff69b4.svg)](https://www.youtube.com/watch?v=9auOCbH5Ns4) [![XO code style](https://img.shields.io/badge/code_style-XO-5ed9c7.svg)](https://github.com/xojs/xo) [![Mentioned in Awesome Node.js](https://awesome.re/mentioned-badge.svg)](https://github.com/sindresorhus/awesome-nodejs)
+
+### [See what's new in Chalk 2](https://github.com/chalk/chalk/releases/tag/v2.0.0)
+
+<img src="https://cdn.rawgit.com/chalk/ansi-styles/8261697c95bf34b6c7767e2cbe9941a851d59385/screenshot.svg" alt="" width="900">
+
+
+## Highlights
+
+- Expressive API
+- Highly performant
+- Ability to nest styles
+- [256/Truecolor color support](#256-and-truecolor-color-support)
+- Auto-detects color support
+- Doesn't extend `String.prototype`
+- Clean and focused
+- Actively maintained
+- [Used by ~23,000 packages](https://www.npmjs.com/browse/depended/chalk) as of December 31, 2017
+
+
+## Install
+
+```console
+$ npm install chalk
+```
+
+<a href="https://www.patreon.com/sindresorhus">
+	<img src="https://c5.patreon.com/external/logo/become_a_patron_button@2x.png" width="160">
+</a>
+
+
+## Usage
+
+```js
+const chalk = require('chalk');
+
+console.log(chalk.blue('Hello world!'));
+```
+
+Chalk comes with an easy to use composable API where you just chain and nest the styles you want.
+
+```js
+const chalk = require('chalk');
+const log = console.log;
+
+// Combine styled and normal strings
+log(chalk.blue('Hello') + ' World' + chalk.red('!'));
+
+// Compose multiple styles using the chainable API
+log(chalk.blue.bgRed.bold('Hello world!'));
+
+// Pass in multiple arguments
+log(chalk.blue('Hello', 'World!', 'Foo', 'bar', 'biz', 'baz'));
+
+// Nest styles
+log(chalk.red('Hello', chalk.underline.bgBlue('world') + '!'));
+
+// Nest styles of the same type even (color, underline, background)
+log(chalk.green(
+	'I am a green line ' +
+	chalk.blue.underline.bold('with a blue substring') +
+	' that becomes green again!'
+));
+
+// ES2015 template literal
+log(`
+CPU: ${chalk.red('90%')}
+RAM: ${chalk.green('40%')}
+DISK: ${chalk.yellow('70%')}
+`);
+
+// ES2015 tagged template literal
+log(chalk`
+CPU: {red ${cpu.totalPercent}%}
+RAM: {green ${ram.used / ram.total * 100}%}
+DISK: {rgb(255,131,0) ${disk.used / disk.total * 100}%}
+`);
+
+// Use RGB colors in terminal emulators that support it.
+log(chalk.keyword('orange')('Yay for orange colored text!'));
+log(chalk.rgb(123, 45, 67).underline('Underlined reddish color'));
+log(chalk.hex('#DEADED').bold('Bold gray!'));
+```
+
+Easily define your own themes:
+
+```js
+const chalk = require('chalk');
+
+const error = chalk.bold.red;
+const warning = chalk.keyword('orange');
+
+console.log(error('Error!'));
+console.log(warning('Warning!'));
+```
+
+Take advantage of console.log [string substitution](https://nodejs.org/docs/latest/api/console.html#console_console_log_data_args):
+
+```js
+const name = 'Sindre';
+console.log(chalk.green('Hello %s'), name);
+//=> 'Hello Sindre'
+```
+
+
+## API
+
+### chalk.`<style>[.<style>...](string, [string...])`
+
+Example: `chalk.red.bold.underline('Hello', 'world');`
+
+Chain [styles](#styles) and call the last one as a method with a string argument. Order doesn't matter, and later styles take precedent in case of a conflict. This simply means that `chalk.red.yellow.green` is equivalent to `chalk.green`.
+
+Multiple arguments will be separated by space.
+
+### chalk.enabled
+
+Color support is automatically detected, as is the level (see `chalk.level`). However, if you'd like to simply enable/disable Chalk, you can do so via the `.enabled` property.
+
+Chalk is enabled by default unless explicitly disabled via the constructor or `chalk.level` is `0`.
+
+If you need to change this in a reusable module, create a new instance:
+
+```js
+const ctx = new chalk.constructor({enabled: false});
+```
+
+### chalk.level
+
+Color support is automatically detected, but you can override it by setting the `level` property. You should however only do this in your own code as it applies globally to all Chalk consumers.
+
+If you need to change this in a reusable module, create a new instance:
+
+```js
+const ctx = new chalk.constructor({level: 0});
+```
+
+Levels are as follows:
+
+0. All colors disabled
+1. Basic color support (16 colors)
+2. 256 color support
+3. Truecolor support (16 million colors)
+
+### chalk.supportsColor
+
+Detect whether the terminal [supports color](https://github.com/chalk/supports-color). Used internally and handled for you, but exposed for convenience.
+
+Can be overridden by the user with the flags `--color` and `--no-color`. For situations where using `--color` is not possible, add the environment variable `FORCE_COLOR=1` to forcefully enable color or `FORCE_COLOR=0` to forcefully disable. The use of `FORCE_COLOR` overrides all other color support checks.
+
+Explicit 256/Truecolor mode can be enabled using the `--color=256` and `--color=16m` flags, respectively.
+
+
+## Styles
+
+### Modifiers
+
+- `reset`
+- `bold`
+- `dim`
+- `italic` *(Not widely supported)*
+- `underline`
+- `inverse`
+- `hidden`
+- `strikethrough` *(Not widely supported)*
+- `visible` (Text is emitted only if enabled)
+
+### Colors
+
+- `black`
+- `red`
+- `green`
+- `yellow`
+- `blue` *(On Windows the bright version is used since normal blue is illegible)*
+- `magenta`
+- `cyan`
+- `white`
+- `gray` ("bright black")
+- `redBright`
+- `greenBright`
+- `yellowBright`
+- `blueBright`
+- `magentaBright`
+- `cyanBright`
+- `whiteBright`
+
+### Background colors
+
+- `bgBlack`
+- `bgRed`
+- `bgGreen`
+- `bgYellow`
+- `bgBlue`
+- `bgMagenta`
+- `bgCyan`
+- `bgWhite`
+- `bgBlackBright`
+- `bgRedBright`
+- `bgGreenBright`
+- `bgYellowBright`
+- `bgBlueBright`
+- `bgMagentaBright`
+- `bgCyanBright`
+- `bgWhiteBright`
+
+
+## Tagged template literal
+
+Chalk can be used as a [tagged template literal](http://exploringjs.com/es6/ch_template-literals.html#_tagged-template-literals).
+
+```js
+const chalk = require('chalk');
+
+const miles = 18;
+const calculateFeet = miles => miles * 5280;
+
+console.log(chalk`
+  There are {bold 5280 feet} in a mile.
+  In {bold ${miles} miles}, there are {green.bold ${calculateFeet(miles)} feet}.
+`);
+```
+
+Blocks are delimited by an opening curly brace (`{`), a style, some content, and a closing curly brace (`}`).
+
+Template styles are chained exactly like normal Chalk styles. The following two statements are equivalent:
+
+```js
+console.log(chalk.bold.rgb(10, 100, 200)('Hello!'));
+console.log(chalk`{bold.rgb(10,100,200) Hello!}`);
+```
+
+Note that function styles (`rgb()`, `hsl()`, `keyword()`, etc.) may not contain spaces between parameters.
+
+All interpolated values (`` chalk`${foo}` ``) are converted to strings via the `.toString()` method. All curly braces (`{` and `}`) in interpolated value strings are escaped.
+
+
+## 256 and Truecolor color support
+
+Chalk supports 256 colors and [Truecolor](https://gist.github.com/XVilka/8346728) (16 million colors) on supported terminal apps.
+
+Colors are downsampled from 16 million RGB values to an ANSI color format that is supported by the terminal emulator (or by specifying `{level: n}` as a Chalk option). For example, Chalk configured to run at level 1 (basic color support) will downsample an RGB value of #FF0000 (red) to 31 (ANSI escape for red).
+
+Examples:
+
+- `chalk.hex('#DEADED').underline('Hello, world!')`
+- `chalk.keyword('orange')('Some orange text')`
+- `chalk.rgb(15, 100, 204).inverse('Hello!')`
+
+Background versions of these models are prefixed with `bg` and the first level of the module capitalized (e.g. `keyword` for foreground colors and `bgKeyword` for background colors).
+
+- `chalk.bgHex('#DEADED').underline('Hello, world!')`
+- `chalk.bgKeyword('orange')('Some orange text')`
+- `chalk.bgRgb(15, 100, 204).inverse('Hello!')`
+
+The following color models can be used:
+
+- [`rgb`](https://en.wikipedia.org/wiki/RGB_color_model) - Example: `chalk.rgb(255, 136, 0).bold('Orange!')`
+- [`hex`](https://en.wikipedia.org/wiki/Web_colors#Hex_triplet) - Example: `chalk.hex('#FF8800').bold('Orange!')`
+- [`keyword`](https://www.w3.org/wiki/CSS/Properties/color/keywords) (CSS keywords) - Example: `chalk.keyword('orange').bold('Orange!')`
+- [`hsl`](https://en.wikipedia.org/wiki/HSL_and_HSV) - Example: `chalk.hsl(32, 100, 50).bold('Orange!')`
+- [`hsv`](https://en.wikipedia.org/wiki/HSL_and_HSV) - Example: `chalk.hsv(32, 100, 100).bold('Orange!')`
+- [`hwb`](https://en.wikipedia.org/wiki/HWB_color_model)  - Example: `chalk.hwb(32, 0, 50).bold('Orange!')`
+- `ansi16`
+- `ansi256`
+
+
+## Windows
+
+If you're on Windows, do yourself a favor and use [`cmder`](http://cmder.net/) instead of `cmd.exe`.
+
+
+## Origin story
+
+[colors.js](https://github.com/Marak/colors.js) used to be the most popular string styling module, but it has serious deficiencies like extending `String.prototype` which causes all kinds of [problems](https://github.com/yeoman/yo/issues/68) and the package is unmaintained. Although there are other packages, they either do too much or not enough. Chalk is a clean and focused alternative.
+
+
+## Related
+
+- [chalk-cli](https://github.com/chalk/chalk-cli) - CLI for this module
+- [ansi-styles](https://github.com/chalk/ansi-styles) - ANSI escape codes for styling strings in the terminal
+- [supports-color](https://github.com/chalk/supports-color) - Detect whether a terminal supports color
+- [strip-ansi](https://github.com/chalk/strip-ansi) - Strip ANSI escape codes
+- [strip-ansi-stream](https://github.com/chalk/strip-ansi-stream) - Strip ANSI escape codes from a stream
+- [has-ansi](https://github.com/chalk/has-ansi) - Check if a string has ANSI escape codes
+- [ansi-regex](https://github.com/chalk/ansi-regex) - Regular expression for matching ANSI escape codes
+- [wrap-ansi](https://github.com/chalk/wrap-ansi) - Wordwrap a string with ANSI escape codes
+- [slice-ansi](https://github.com/chalk/slice-ansi) - Slice a string with ANSI escape codes
+- [color-convert](https://github.com/qix-/color-convert) - Converts colors between different models
+- [chalk-animation](https://github.com/bokub/chalk-animation) - Animate strings in the terminal
+- [gradient-string](https://github.com/bokub/gradient-string) - Apply color gradients to strings
+- [chalk-pipe](https://github.com/LitoMore/chalk-pipe) - Create chalk style schemes with simpler style strings
+- [terminal-link](https://github.com/sindresorhus/terminal-link) - Create clickable links in the terminal
+
+
+## Maintainers
+
+- [Sindre Sorhus](https://github.com/sindresorhus)
+- [Josh Junon](https://github.com/qix-)
+
+
+## License
+
+MIT
diff --git a/igv_component/node_modules/chalk/templates.js b/igv_component/node_modules/chalk/templates.js
new file mode 100644
index 0000000000000000000000000000000000000000..dbdf9b221129e40b4828c503b18b3c1b5ff29d97
--- /dev/null
+++ b/igv_component/node_modules/chalk/templates.js
@@ -0,0 +1,128 @@
+'use strict';
+const TEMPLATE_REGEX = /(?:\\(u[a-f\d]{4}|x[a-f\d]{2}|.))|(?:\{(~)?(\w+(?:\([^)]*\))?(?:\.\w+(?:\([^)]*\))?)*)(?:[ \t]|(?=\r?\n)))|(\})|((?:.|[\r\n\f])+?)/gi;
+const STYLE_REGEX = /(?:^|\.)(\w+)(?:\(([^)]*)\))?/g;
+const STRING_REGEX = /^(['"])((?:\\.|(?!\1)[^\\])*)\1$/;
+const ESCAPE_REGEX = /\\(u[a-f\d]{4}|x[a-f\d]{2}|.)|([^\\])/gi;
+
+const ESCAPES = new Map([
+	['n', '\n'],
+	['r', '\r'],
+	['t', '\t'],
+	['b', '\b'],
+	['f', '\f'],
+	['v', '\v'],
+	['0', '\0'],
+	['\\', '\\'],
+	['e', '\u001B'],
+	['a', '\u0007']
+]);
+
+function unescape(c) {
+	if ((c[0] === 'u' && c.length === 5) || (c[0] === 'x' && c.length === 3)) {
+		return String.fromCharCode(parseInt(c.slice(1), 16));
+	}
+
+	return ESCAPES.get(c) || c;
+}
+
+function parseArguments(name, args) {
+	const results = [];
+	const chunks = args.trim().split(/\s*,\s*/g);
+	let matches;
+
+	for (const chunk of chunks) {
+		if (!isNaN(chunk)) {
+			results.push(Number(chunk));
+		} else if ((matches = chunk.match(STRING_REGEX))) {
+			results.push(matches[2].replace(ESCAPE_REGEX, (m, escape, chr) => escape ? unescape(escape) : chr));
+		} else {
+			throw new Error(`Invalid Chalk template style argument: ${chunk} (in style '${name}')`);
+		}
+	}
+
+	return results;
+}
+
+function parseStyle(style) {
+	STYLE_REGEX.lastIndex = 0;
+
+	const results = [];
+	let matches;
+
+	while ((matches = STYLE_REGEX.exec(style)) !== null) {
+		const name = matches[1];
+
+		if (matches[2]) {
+			const args = parseArguments(name, matches[2]);
+			results.push([name].concat(args));
+		} else {
+			results.push([name]);
+		}
+	}
+
+	return results;
+}
+
+function buildStyle(chalk, styles) {
+	const enabled = {};
+
+	for (const layer of styles) {
+		for (const style of layer.styles) {
+			enabled[style[0]] = layer.inverse ? null : style.slice(1);
+		}
+	}
+
+	let current = chalk;
+	for (const styleName of Object.keys(enabled)) {
+		if (Array.isArray(enabled[styleName])) {
+			if (!(styleName in current)) {
+				throw new Error(`Unknown Chalk style: ${styleName}`);
+			}
+
+			if (enabled[styleName].length > 0) {
+				current = current[styleName].apply(current, enabled[styleName]);
+			} else {
+				current = current[styleName];
+			}
+		}
+	}
+
+	return current;
+}
+
+module.exports = (chalk, tmp) => {
+	const styles = [];
+	const chunks = [];
+	let chunk = [];
+
+	// eslint-disable-next-line max-params
+	tmp.replace(TEMPLATE_REGEX, (m, escapeChar, inverse, style, close, chr) => {
+		if (escapeChar) {
+			chunk.push(unescape(escapeChar));
+		} else if (style) {
+			const str = chunk.join('');
+			chunk = [];
+			chunks.push(styles.length === 0 ? str : buildStyle(chalk, styles)(str));
+			styles.push({inverse, styles: parseStyle(style)});
+		} else if (close) {
+			if (styles.length === 0) {
+				throw new Error('Found extraneous } in Chalk template literal');
+			}
+
+			chunks.push(buildStyle(chalk, styles)(chunk.join('')));
+			chunk = [];
+			styles.pop();
+		} else {
+			chunk.push(chr);
+		}
+	});
+
+	chunks.push(chunk.join(''));
+
+	if (styles.length > 0) {
+		const errMsg = `Chalk template literal is missing ${styles.length} closing bracket${styles.length === 1 ? '' : 's'} (\`}\`)`;
+		throw new Error(errMsg);
+	}
+
+	return chunks.join('');
+};
diff --git a/igv_component/node_modules/chalk/types/index.d.ts b/igv_component/node_modules/chalk/types/index.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b4e4dc57ed01b7056e20db5a8e3d23ee6014a343
--- /dev/null
+++ b/igv_component/node_modules/chalk/types/index.d.ts
@@ -0,0 +1,97 @@
+// Type definitions for Chalk
+// Definitions by: Thomas Sauer <https://github.com/t-sauer>
+
+export const enum Level {
+	None = 0,
+	Basic = 1,
+	Ansi256 = 2,
+	TrueColor = 3
+}
+
+export interface ChalkOptions {
+	enabled?: boolean;
+	level?: Level;
+}
+
+export interface ChalkConstructor {
+	new (options?: ChalkOptions): Chalk;
+	(options?: ChalkOptions): Chalk;
+}
+
+export interface ColorSupport {
+	level: Level;
+	hasBasic: boolean;
+	has256: boolean;
+	has16m: boolean;
+}
+
+export interface Chalk {
+	(...text: string[]): string;
+	(text: TemplateStringsArray, ...placeholders: string[]): string;
+	constructor: ChalkConstructor;
+	enabled: boolean;
+	level: Level;
+	rgb(r: number, g: number, b: number): this;
+	hsl(h: number, s: number, l: number): this;
+	hsv(h: number, s: number, v: number): this;
+	hwb(h: number, w: number, b: number): this;
+	bgHex(color: string): this;
+	bgKeyword(color: string): this;
+	bgRgb(r: number, g: number, b: number): this;
+	bgHsl(h: number, s: number, l: number): this;
+	bgHsv(h: number, s: number, v: number): this;
+	bgHwb(h: number, w: number, b: number): this;
+	hex(color: string): this;
+	keyword(color: string): this;
+
+	readonly reset: this;
+	readonly bold: this;
+	readonly dim: this;
+	readonly italic: this;
+	readonly underline: this;
+	readonly inverse: this;
+	readonly hidden: this;
+	readonly strikethrough: this;
+
+	readonly visible: this;
+
+	readonly black: this;
+	readonly red: this;
+	readonly green: this;
+	readonly yellow: this;
+	readonly blue: this;
+	readonly magenta: this;
+	readonly cyan: this;
+	readonly white: this;
+	readonly gray: this;
+	readonly grey: this;
+	readonly blackBright: this;
+	readonly redBright: this;
+	readonly greenBright: this;
+	readonly yellowBright: this;
+	readonly blueBright: this;
+	readonly magentaBright: this;
+	readonly cyanBright: this;
+	readonly whiteBright: this;
+
+	readonly bgBlack: this;
+	readonly bgRed: this;
+	readonly bgGreen: this;
+	readonly bgYellow: this;
+	readonly bgBlue: this;
+	readonly bgMagenta: this;
+	readonly bgCyan: this;
+	readonly bgWhite: this;
+	readonly bgBlackBright: this;
+	readonly bgRedBright: this;
+	readonly bgGreenBright: this;
+	readonly bgYellowBright: this;
+	readonly bgBlueBright: this;
+	readonly bgMagentaBright: this;
+	readonly bgCyanBright: this;
+	readonly bgWhiteBright: this;
+}
+
+declare const chalk: Chalk & { supportsColor: ColorSupport };
+
+export default chalk
diff --git a/igv_component/node_modules/color-convert/CHANGELOG.md b/igv_component/node_modules/color-convert/CHANGELOG.md
new file mode 100644
index 0000000000000000000000000000000000000000..0a7bce4fd570ab5f2f7ad89f8456ee0ad26de1f5
--- /dev/null
+++ b/igv_component/node_modules/color-convert/CHANGELOG.md
@@ -0,0 +1,54 @@
+# 1.0.0 - 2016-01-07
+
+- Removed: unused speed test
+- Added: Automatic routing between previously unsupported conversions
+([#27](https://github.com/Qix-/color-convert/pull/27))
+- Removed: `xxx2xxx()` and `xxx2xxxRaw()` functions
+([#27](https://github.com/Qix-/color-convert/pull/27))
+- Removed: `convert()` class
+([#27](https://github.com/Qix-/color-convert/pull/27))
+- Changed: all functions to lookup dictionary
+([#27](https://github.com/Qix-/color-convert/pull/27))
+- Changed: `ansi` to `ansi256`
+([#27](https://github.com/Qix-/color-convert/pull/27))
+- Fixed: argument grouping for functions requiring only one argument
+([#27](https://github.com/Qix-/color-convert/pull/27))
+
+# 0.6.0 - 2015-07-23
+
+- Added: methods to handle
+[ANSI](https://en.wikipedia.org/wiki/ANSI_escape_code#Colors) 16/256 colors:
+  - rgb2ansi16
+  - rgb2ansi
+  - hsl2ansi16
+  - hsl2ansi
+  - hsv2ansi16
+  - hsv2ansi
+  - hwb2ansi16
+  - hwb2ansi
+  - cmyk2ansi16
+  - cmyk2ansi
+  - keyword2ansi16
+  - keyword2ansi
+  - ansi162rgb
+  - ansi162hsl
+  - ansi162hsv
+  - ansi162hwb
+  - ansi162cmyk
+  - ansi162keyword
+  - ansi2rgb
+  - ansi2hsl
+  - ansi2hsv
+  - ansi2hwb
+  - ansi2cmyk
+  - ansi2keyword
+([#18](https://github.com/harthur/color-convert/pull/18))
+
+# 0.5.3 - 2015-06-02
+
+- Fixed: hsl2hsv does not return `NaN` anymore when using `[0,0,0]`
+([#15](https://github.com/harthur/color-convert/issues/15))
+
+---
+
+Check out commit logs for older releases
diff --git a/igv_component/node_modules/color-convert/LICENSE b/igv_component/node_modules/color-convert/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..5b4c386f9269b30a21f15145cd966c50017c2a3f
--- /dev/null
+++ b/igv_component/node_modules/color-convert/LICENSE
@@ -0,0 +1,21 @@
+Copyright (c) 2011-2016 Heather Arthur <fayearthur@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
diff --git a/igv_component/node_modules/color-convert/README.md b/igv_component/node_modules/color-convert/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..d4b08fc369948daacc146dcde0f63c3a79039852
--- /dev/null
+++ b/igv_component/node_modules/color-convert/README.md
@@ -0,0 +1,68 @@
+# color-convert
+
+[![Build Status](https://travis-ci.org/Qix-/color-convert.svg?branch=master)](https://travis-ci.org/Qix-/color-convert)
+
+Color-convert is a color conversion library for JavaScript and node.
+It converts all ways between `rgb`, `hsl`, `hsv`, `hwb`, `cmyk`, `ansi`, `ansi16`, `hex` strings, and CSS `keyword`s (will round to closest):
+
+```js
+var convert = require('color-convert');
+
+convert.rgb.hsl(140, 200, 100);             // [96, 48, 59]
+convert.keyword.rgb('blue');                // [0, 0, 255]
+
+var rgbChannels = convert.rgb.channels;     // 3
+var cmykChannels = convert.cmyk.channels;   // 4
+var ansiChannels = convert.ansi16.channels; // 1
+```
+
+# Install
+
+```console
+$ npm install color-convert
+```
+
+# API
+
+Simply get the property of the _from_ and _to_ conversion that you're looking for.
+
+All functions have a rounded and unrounded variant. By default, return values are rounded. To get the unrounded (raw) results, simply tack on `.raw` to the function.
+
+All 'from' functions have a hidden property called `.channels` that indicates the number of channels the function expects (not including alpha).
+
+```js
+var convert = require('color-convert');
+
+// Hex to LAB
+convert.hex.lab('DEADBF');         // [ 76, 21, -2 ]
+convert.hex.lab.raw('DEADBF');     // [ 75.56213190997677, 20.653827952644754, -2.290532499330533 ]
+
+// RGB to CMYK
+convert.rgb.cmyk(167, 255, 4);     // [ 35, 0, 98, 0 ]
+convert.rgb.cmyk.raw(167, 255, 4); // [ 34.509803921568626, 0, 98.43137254901961, 0 ]
+```
+
+### Arrays
+All functions that accept multiple arguments also support passing an array.
+
+Note that this does **not** apply to functions that convert from a color that only requires one value (e.g. `keyword`, `ansi256`, `hex`, etc.)
+
+```js
+var convert = require('color-convert');
+
+convert.rgb.hex(123, 45, 67);      // '7B2D43'
+convert.rgb.hex([123, 45, 67]);    // '7B2D43'
+```
+
+## Routing
+
+Conversions that don't have an _explicitly_ defined conversion (in [conversions.js](conversions.js)), but can be converted by means of sub-conversions (e.g. XYZ -> **RGB** -> CMYK), are automatically routed together. This allows just about any color model supported by `color-convert` to be converted to any other model, so long as a sub-conversion path exists. This is also true for conversions requiring more than one step in between (e.g. LCH -> **LAB** -> **XYZ** -> **RGB** -> Hex).
+
+Keep in mind that extensive conversions _may_ result in a loss of precision, and exist only to be complete. For a list of "direct" (single-step) conversions, see [conversions.js](conversions.js).
+
+# Contribute
+
+If there is a new model you would like to support, or want to add a direct conversion between two existing models, please send us a pull request.
+
+# License
+Copyright &copy; 2011-2016, Heather Arthur and Josh Junon. Licensed under the [MIT License](LICENSE).
diff --git a/igv_component/node_modules/color-convert/conversions.js b/igv_component/node_modules/color-convert/conversions.js
new file mode 100644
index 0000000000000000000000000000000000000000..32172007ec0b17209337204b4bf73c0fe6812e27
--- /dev/null
+++ b/igv_component/node_modules/color-convert/conversions.js
@@ -0,0 +1,868 @@
+/* MIT license */
+var cssKeywords = require('color-name');
+
+// NOTE: conversions should only return primitive values (i.e. arrays, or
+//       values that give correct `typeof` results).
+//       do not use box values types (i.e. Number(), String(), etc.)
+
+var reverseKeywords = {};
+for (var key in cssKeywords) {
+	if (cssKeywords.hasOwnProperty(key)) {
+		reverseKeywords[cssKeywords[key]] = key;
+	}
+}
+
+var convert = module.exports = {
+	rgb: {channels: 3, labels: 'rgb'},
+	hsl: {channels: 3, labels: 'hsl'},
+	hsv: {channels: 3, labels: 'hsv'},
+	hwb: {channels: 3, labels: 'hwb'},
+	cmyk: {channels: 4, labels: 'cmyk'},
+	xyz: {channels: 3, labels: 'xyz'},
+	lab: {channels: 3, labels: 'lab'},
+	lch: {channels: 3, labels: 'lch'},
+	hex: {channels: 1, labels: ['hex']},
+	keyword: {channels: 1, labels: ['keyword']},
+	ansi16: {channels: 1, labels: ['ansi16']},
+	ansi256: {channels: 1, labels: ['ansi256']},
+	hcg: {channels: 3, labels: ['h', 'c', 'g']},
+	apple: {channels: 3, labels: ['r16', 'g16', 'b16']},
+	gray: {channels: 1, labels: ['gray']}
+};
+
+// hide .channels and .labels properties
+for (var model in convert) {
+	if (convert.hasOwnProperty(model)) {
+		if (!('channels' in convert[model])) {
+			throw new Error('missing channels property: ' + model);
+		}
+
+		if (!('labels' in convert[model])) {
+			throw new Error('missing channel labels property: ' + model);
+		}
+
+		if (convert[model].labels.length !== convert[model].channels) {
+			throw new Error('channel and label counts mismatch: ' + model);
+		}
+
+		var channels = convert[model].channels;
+		var labels = convert[model].labels;
+		delete convert[model].channels;
+		delete convert[model].labels;
+		Object.defineProperty(convert[model], 'channels', {value: channels});
+		Object.defineProperty(convert[model], 'labels', {value: labels});
+	}
+}
+
+convert.rgb.hsl = function (rgb) {
+	var r = rgb[0] / 255;
+	var g = rgb[1] / 255;
+	var b = rgb[2] / 255;
+	var min = Math.min(r, g, b);
+	var max = Math.max(r, g, b);
+	var delta = max - min;
+	var h;
+	var s;
+	var l;
+
+	if (max === min) {
+		h = 0;
+	} else if (r === max) {
+		h = (g - b) / delta;
+	} else if (g === max) {
+		h = 2 + (b - r) / delta;
+	} else if (b === max) {
+		h = 4 + (r - g) / delta;
+	}
+
+	h = Math.min(h * 60, 360);
+
+	if (h < 0) {
+		h += 360;
+	}
+
+	l = (min + max) / 2;
+
+	if (max === min) {
+		s = 0;
+	} else if (l <= 0.5) {
+		s = delta / (max + min);
+	} else {
+		s = delta / (2 - max - min);
+	}
+
+	return [h, s * 100, l * 100];
+};
+
+convert.rgb.hsv = function (rgb) {
+	var rdif;
+	var gdif;
+	var bdif;
+	var h;
+	var s;
+
+	var r = rgb[0] / 255;
+	var g = rgb[1] / 255;
+	var b = rgb[2] / 255;
+	var v = Math.max(r, g, b);
+	var diff = v - Math.min(r, g, b);
+	var diffc = function (c) {
+		return (v - c) / 6 / diff + 1 / 2;
+	};
+
+	if (diff === 0) {
+		h = s = 0;
+	} else {
+		s = diff / v;
+		rdif = diffc(r);
+		gdif = diffc(g);
+		bdif = diffc(b);
+
+		if (r === v) {
+			h = bdif - gdif;
+		} else if (g === v) {
+			h = (1 / 3) + rdif - bdif;
+		} else if (b === v) {
+			h = (2 / 3) + gdif - rdif;
+		}
+		if (h < 0) {
+			h += 1;
+		} else if (h > 1) {
+			h -= 1;
+		}
+	}
+
+	return [
+		h * 360,
+		s * 100,
+		v * 100
+	];
+};
+
+convert.rgb.hwb = function (rgb) {
+	var r = rgb[0];
+	var g = rgb[1];
+	var b = rgb[2];
+	var h = convert.rgb.hsl(rgb)[0];
+	var w = 1 / 255 * Math.min(r, Math.min(g, b));
+
+	b = 1 - 1 / 255 * Math.max(r, Math.max(g, b));
+
+	return [h, w * 100, b * 100];
+};
+
+convert.rgb.cmyk = function (rgb) {
+	var r = rgb[0] / 255;
+	var g = rgb[1] / 255;
+	var b = rgb[2] / 255;
+	var c;
+	var m;
+	var y;
+	var k;
+
+	k = Math.min(1 - r, 1 - g, 1 - b);
+	c = (1 - r - k) / (1 - k) || 0;
+	m = (1 - g - k) / (1 - k) || 0;
+	y = (1 - b - k) / (1 - k) || 0;
+
+	return [c * 100, m * 100, y * 100, k * 100];
+};
+
+/**
+ * See https://en.m.wikipedia.org/wiki/Euclidean_distance#Squared_Euclidean_distance
+ * */
+function comparativeDistance(x, y) {
+	return (
+		Math.pow(x[0] - y[0], 2) +
+		Math.pow(x[1] - y[1], 2) +
+		Math.pow(x[2] - y[2], 2)
+	);
+}
+
+convert.rgb.keyword = function (rgb) {
+	var reversed = reverseKeywords[rgb];
+	if (reversed) {
+		return reversed;
+	}
+
+	var currentClosestDistance = Infinity;
+	var currentClosestKeyword;
+
+	for (var keyword in cssKeywords) {
+		if (cssKeywords.hasOwnProperty(keyword)) {
+			var value = cssKeywords[keyword];
+
+			// Compute comparative distance
+			var distance = comparativeDistance(rgb, value);
+
+			// Check if its less, if so set as closest
+			if (distance < currentClosestDistance) {
+				currentClosestDistance = distance;
+				currentClosestKeyword = keyword;
+			}
+		}
+	}
+
+	return currentClosestKeyword;
+};
+
+convert.keyword.rgb = function (keyword) {
+	return cssKeywords[keyword];
+};
+
+convert.rgb.xyz = function (rgb) {
+	var r = rgb[0] / 255;
+	var g = rgb[1] / 255;
+	var b = rgb[2] / 255;
+
+	// assume sRGB
+	r = r > 0.04045 ? Math.pow(((r + 0.055) / 1.055), 2.4) : (r / 12.92);
+	g = g > 0.04045 ? Math.pow(((g + 0.055) / 1.055), 2.4) : (g / 12.92);
+	b = b > 0.04045 ? Math.pow(((b + 0.055) / 1.055), 2.4) : (b / 12.92);
+
+	var x = (r * 0.4124) + (g * 0.3576) + (b * 0.1805);
+	var y = (r * 0.2126) + (g * 0.7152) + (b * 0.0722);
+	var z = (r * 0.0193) + (g * 0.1192) + (b * 0.9505);
+
+	return [x * 100, y * 100, z * 100];
+};
+
+convert.rgb.lab = function (rgb) {
+	var xyz = convert.rgb.xyz(rgb);
+	var x = xyz[0];
+	var y = xyz[1];
+	var z = xyz[2];
+	var l;
+	var a;
+	var b;
+
+	x /= 95.047;
+	y /= 100;
+	z /= 108.883;
+
+	x = x > 0.008856 ? Math.pow(x, 1 / 3) : (7.787 * x) + (16 / 116);
+	y = y > 0.008856 ? Math.pow(y, 1 / 3) : (7.787 * y) + (16 / 116);
+	z = z > 0.008856 ? Math.pow(z, 1 / 3) : (7.787 * z) + (16 / 116);
+
+	l = (116 * y) - 16;
+	a = 500 * (x - y);
+	b = 200 * (y - z);
+
+	return [l, a, b];
+};
+
+convert.hsl.rgb = function (hsl) {
+	var h = hsl[0] / 360;
+	var s = hsl[1] / 100;
+	var l = hsl[2] / 100;
+	var t1;
+	var t2;
+	var t3;
+	var rgb;
+	var val;
+
+	if (s === 0) {
+		val = l * 255;
+		return [val, val, val];
+	}
+
+	if (l < 0.5) {
+		t2 = l * (1 + s);
+	} else {
+		t2 = l + s - l * s;
+	}
+
+	t1 = 2 * l - t2;
+
+	rgb = [0, 0, 0];
+	for (var i = 0; i < 3; i++) {
+		t3 = h + 1 / 3 * -(i - 1);
+		if (t3 < 0) {
+			t3++;
+		}
+		if (t3 > 1) {
+			t3--;
+		}
+
+		if (6 * t3 < 1) {
+			val = t1 + (t2 - t1) * 6 * t3;
+		} else if (2 * t3 < 1) {
+			val = t2;
+		} else if (3 * t3 < 2) {
+			val = t1 + (t2 - t1) * (2 / 3 - t3) * 6;
+		} else {
+			val = t1;
+		}
+
+		rgb[i] = val * 255;
+	}
+
+	return rgb;
+};
+
+convert.hsl.hsv = function (hsl) {
+	var h = hsl[0];
+	var s = hsl[1] / 100;
+	var l = hsl[2] / 100;
+	var smin = s;
+	var lmin = Math.max(l, 0.01);
+	var sv;
+	var v;
+
+	l *= 2;
+	s *= (l <= 1) ? l : 2 - l;
+	smin *= lmin <= 1 ? lmin : 2 - lmin;
+	v = (l + s) / 2;
+	sv = l === 0 ? (2 * smin) / (lmin + smin) : (2 * s) / (l + s);
+
+	return [h, sv * 100, v * 100];
+};
+
+convert.hsv.rgb = function (hsv) {
+	var h = hsv[0] / 60;
+	var s = hsv[1] / 100;
+	var v = hsv[2] / 100;
+	var hi = Math.floor(h) % 6;
+
+	var f = h - Math.floor(h);
+	var p = 255 * v * (1 - s);
+	var q = 255 * v * (1 - (s * f));
+	var t = 255 * v * (1 - (s * (1 - f)));
+	v *= 255;
+
+	switch (hi) {
+		case 0:
+			return [v, t, p];
+		case 1:
+			return [q, v, p];
+		case 2:
+			return [p, v, t];
+		case 3:
+			return [p, q, v];
+		case 4:
+			return [t, p, v];
+		case 5:
+			return [v, p, q];
+	}
+};
+
+convert.hsv.hsl = function (hsv) {
+	var h = hsv[0];
+	var s = hsv[1] / 100;
+	var v = hsv[2] / 100;
+	var vmin = Math.max(v, 0.01);
+	var lmin;
+	var sl;
+	var l;
+
+	l = (2 - s) * v;
+	lmin = (2 - s) * vmin;
+	sl = s * vmin;
+	sl /= (lmin <= 1) ? lmin : 2 - lmin;
+	sl = sl || 0;
+	l /= 2;
+
+	return [h, sl * 100, l * 100];
+};
+
+// http://dev.w3.org/csswg/css-color/#hwb-to-rgb
+convert.hwb.rgb = function (hwb) {
+	var h = hwb[0] / 360;
+	var wh = hwb[1] / 100;
+	var bl = hwb[2] / 100;
+	var ratio = wh + bl;
+	var i;
+	var v;
+	var f;
+	var n;
+
+	// wh + bl cant be > 1
+	if (ratio > 1) {
+		wh /= ratio;
+		bl /= ratio;
+	}
+
+	i = Math.floor(6 * h);
+	v = 1 - bl;
+	f = 6 * h - i;
+
+	if ((i & 0x01) !== 0) {
+		f = 1 - f;
+	}
+
+	n = wh + f * (v - wh); // linear interpolation
+
+	var r;
+	var g;
+	var b;
+	switch (i) {
+		default:
+		case 6:
+		case 0: r = v; g = n; b = wh; break;
+		case 1: r = n; g = v; b = wh; break;
+		case 2: r = wh; g = v; b = n; break;
+		case 3: r = wh; g = n; b = v; break;
+		case 4: r = n; g = wh; b = v; break;
+		case 5: r = v; g = wh; b = n; break;
+	}
+
+	return [r * 255, g * 255, b * 255];
+};
+
+convert.cmyk.rgb = function (cmyk) {
+	var c = cmyk[0] / 100;
+	var m = cmyk[1] / 100;
+	var y = cmyk[2] / 100;
+	var k = cmyk[3] / 100;
+	var r;
+	var g;
+	var b;
+
+	r = 1 - Math.min(1, c * (1 - k) + k);
+	g = 1 - Math.min(1, m * (1 - k) + k);
+	b = 1 - Math.min(1, y * (1 - k) + k);
+
+	return [r * 255, g * 255, b * 255];
+};
+
+convert.xyz.rgb = function (xyz) {
+	var x = xyz[0] / 100;
+	var y = xyz[1] / 100;
+	var z = xyz[2] / 100;
+	var r;
+	var g;
+	var b;
+
+	r = (x * 3.2406) + (y * -1.5372) + (z * -0.4986);
+	g = (x * -0.9689) + (y * 1.8758) + (z * 0.0415);
+	b = (x * 0.0557) + (y * -0.2040) + (z * 1.0570);
+
+	// assume sRGB
+	r = r > 0.0031308
+		? ((1.055 * Math.pow(r, 1.0 / 2.4)) - 0.055)
+		: r * 12.92;
+
+	g = g > 0.0031308
+		? ((1.055 * Math.pow(g, 1.0 / 2.4)) - 0.055)
+		: g * 12.92;
+
+	b = b > 0.0031308
+		? ((1.055 * Math.pow(b, 1.0 / 2.4)) - 0.055)
+		: b * 12.92;
+
+	r = Math.min(Math.max(0, r), 1);
+	g = Math.min(Math.max(0, g), 1);
+	b = Math.min(Math.max(0, b), 1);
+
+	return [r * 255, g * 255, b * 255];
+};
+
+convert.xyz.lab = function (xyz) {
+	var x = xyz[0];
+	var y = xyz[1];
+	var z = xyz[2];
+	var l;
+	var a;
+	var b;
+
+	x /= 95.047;
+	y /= 100;
+	z /= 108.883;
+
+	x = x > 0.008856 ? Math.pow(x, 1 / 3) : (7.787 * x) + (16 / 116);
+	y = y > 0.008856 ? Math.pow(y, 1 / 3) : (7.787 * y) + (16 / 116);
+	z = z > 0.008856 ? Math.pow(z, 1 / 3) : (7.787 * z) + (16 / 116);
+
+	l = (116 * y) - 16;
+	a = 500 * (x - y);
+	b = 200 * (y - z);
+
+	return [l, a, b];
+};
+
+convert.lab.xyz = function (lab) {
+	var l = lab[0];
+	var a = lab[1];
+	var b = lab[2];
+	var x;
+	var y;
+	var z;
+
+	y = (l + 16) / 116;
+	x = a / 500 + y;
+	z = y - b / 200;
+
+	var y2 = Math.pow(y, 3);
+	var x2 = Math.pow(x, 3);
+	var z2 = Math.pow(z, 3);
+	y = y2 > 0.008856 ? y2 : (y - 16 / 116) / 7.787;
+	x = x2 > 0.008856 ? x2 : (x - 16 / 116) / 7.787;
+	z = z2 > 0.008856 ? z2 : (z - 16 / 116) / 7.787;
+
+	x *= 95.047;
+	y *= 100;
+	z *= 108.883;
+
+	return [x, y, z];
+};
+
+convert.lab.lch = function (lab) {
+	var l = lab[0];
+	var a = lab[1];
+	var b = lab[2];
+	var hr;
+	var h;
+	var c;
+
+	hr = Math.atan2(b, a);
+	h = hr * 360 / 2 / Math.PI;
+
+	if (h < 0) {
+		h += 360;
+	}
+
+	c = Math.sqrt(a * a + b * b);
+
+	return [l, c, h];
+};
+
+convert.lch.lab = function (lch) {
+	var l = lch[0];
+	var c = lch[1];
+	var h = lch[2];
+	var a;
+	var b;
+	var hr;
+
+	hr = h / 360 * 2 * Math.PI;
+	a = c * Math.cos(hr);
+	b = c * Math.sin(hr);
+
+	return [l, a, b];
+};
+
+convert.rgb.ansi16 = function (args) {
+	var r = args[0];
+	var g = args[1];
+	var b = args[2];
+	var value = 1 in arguments ? arguments[1] : convert.rgb.hsv(args)[2]; // hsv -> ansi16 optimization
+
+	value = Math.round(value / 50);
+
+	if (value === 0) {
+		return 30;
+	}
+
+	var ansi = 30
+		+ ((Math.round(b / 255) << 2)
+		| (Math.round(g / 255) << 1)
+		| Math.round(r / 255));
+
+	if (value === 2) {
+		ansi += 60;
+	}
+
+	return ansi;
+};
+
+convert.hsv.ansi16 = function (args) {
+	// optimization here; we already know the value and don't need to get
+	// it converted for us.
+	return convert.rgb.ansi16(convert.hsv.rgb(args), args[2]);
+};
+
+convert.rgb.ansi256 = function (args) {
+	var r = args[0];
+	var g = args[1];
+	var b = args[2];
+
+	// we use the extended greyscale palette here, with the exception of
+	// black and white. normal palette only has 4 greyscale shades.
+	if (r === g && g === b) {
+		if (r < 8) {
+			return 16;
+		}
+
+		if (r > 248) {
+			return 231;
+		}
+
+		return Math.round(((r - 8) / 247) * 24) + 232;
+	}
+
+	var ansi = 16
+		+ (36 * Math.round(r / 255 * 5))
+		+ (6 * Math.round(g / 255 * 5))
+		+ Math.round(b / 255 * 5);
+
+	return ansi;
+};
+
+convert.ansi16.rgb = function (args) {
+	var color = args % 10;
+
+	// handle greyscale
+	if (color === 0 || color === 7) {
+		if (args > 50) {
+			color += 3.5;
+		}
+
+		color = color / 10.5 * 255;
+
+		return [color, color, color];
+	}
+
+	var mult = (~~(args > 50) + 1) * 0.5;
+	var r = ((color & 1) * mult) * 255;
+	var g = (((color >> 1) & 1) * mult) * 255;
+	var b = (((color >> 2) & 1) * mult) * 255;
+
+	return [r, g, b];
+};
+
+convert.ansi256.rgb = function (args) {
+	// handle greyscale
+	if (args >= 232) {
+		var c = (args - 232) * 10 + 8;
+		return [c, c, c];
+	}
+
+	args -= 16;
+
+	var rem;
+	var r = Math.floor(args / 36) / 5 * 255;
+	var g = Math.floor((rem = args % 36) / 6) / 5 * 255;
+	var b = (rem % 6) / 5 * 255;
+
+	return [r, g, b];
+};
+
+convert.rgb.hex = function (args) {
+	var integer = ((Math.round(args[0]) & 0xFF) << 16)
+		+ ((Math.round(args[1]) & 0xFF) << 8)
+		+ (Math.round(args[2]) & 0xFF);
+
+	var string = integer.toString(16).toUpperCase();
+	return '000000'.substring(string.length) + string;
+};
+
+convert.hex.rgb = function (args) {
+	var match = args.toString(16).match(/[a-f0-9]{6}|[a-f0-9]{3}/i);
+	if (!match) {
+		return [0, 0, 0];
+	}
+
+	var colorString = match[0];
+
+	if (match[0].length === 3) {
+		colorString = colorString.split('').map(function (char) {
+			return char + char;
+		}).join('');
+	}
+
+	var integer = parseInt(colorString, 16);
+	var r = (integer >> 16) & 0xFF;
+	var g = (integer >> 8) & 0xFF;
+	var b = integer & 0xFF;
+
+	return [r, g, b];
+};
+
+convert.rgb.hcg = function (rgb) {
+	var r = rgb[0] / 255;
+	var g = rgb[1] / 255;
+	var b = rgb[2] / 255;
+	var max = Math.max(Math.max(r, g), b);
+	var min = Math.min(Math.min(r, g), b);
+	var chroma = (max - min);
+	var grayscale;
+	var hue;
+
+	if (chroma < 1) {
+		grayscale = min / (1 - chroma);
+	} else {
+		grayscale = 0;
+	}
+
+	if (chroma <= 0) {
+		hue = 0;
+	} else
+	if (max === r) {
+		hue = ((g - b) / chroma) % 6;
+	} else
+	if (max === g) {
+		hue = 2 + (b - r) / chroma;
+	} else {
+		hue = 4 + (r - g) / chroma + 4;
+	}
+
+	hue /= 6;
+	hue %= 1;
+
+	return [hue * 360, chroma * 100, grayscale * 100];
+};
+
+convert.hsl.hcg = function (hsl) {
+	var s = hsl[1] / 100;
+	var l = hsl[2] / 100;
+	var c = 1;
+	var f = 0;
+
+	if (l < 0.5) {
+		c = 2.0 * s * l;
+	} else {
+		c = 2.0 * s * (1.0 - l);
+	}
+
+	if (c < 1.0) {
+		f = (l - 0.5 * c) / (1.0 - c);
+	}
+
+	return [hsl[0], c * 100, f * 100];
+};
+
+convert.hsv.hcg = function (hsv) {
+	var s = hsv[1] / 100;
+	var v = hsv[2] / 100;
+
+	var c = s * v;
+	var f = 0;
+
+	if (c < 1.0) {
+		f = (v - c) / (1 - c);
+	}
+
+	return [hsv[0], c * 100, f * 100];
+};
+
+convert.hcg.rgb = function (hcg) {
+	var h = hcg[0] / 360;
+	var c = hcg[1] / 100;
+	var g = hcg[2] / 100;
+
+	if (c === 0.0) {
+		return [g * 255, g * 255, g * 255];
+	}
+
+	var pure = [0, 0, 0];
+	var hi = (h % 1) * 6;
+	var v = hi % 1;
+	var w = 1 - v;
+	var mg = 0;
+
+	switch (Math.floor(hi)) {
+		case 0:
+			pure[0] = 1; pure[1] = v; pure[2] = 0; break;
+		case 1:
+			pure[0] = w; pure[1] = 1; pure[2] = 0; break;
+		case 2:
+			pure[0] = 0; pure[1] = 1; pure[2] = v; break;
+		case 3:
+			pure[0] = 0; pure[1] = w; pure[2] = 1; break;
+		case 4:
+			pure[0] = v; pure[1] = 0; pure[2] = 1; break;
+		default:
+			pure[0] = 1; pure[1] = 0; pure[2] = w;
+	}
+
+	mg = (1.0 - c) * g;
+
+	return [
+		(c * pure[0] + mg) * 255,
+		(c * pure[1] + mg) * 255,
+		(c * pure[2] + mg) * 255
+	];
+};
+
+convert.hcg.hsv = function (hcg) {
+	var c = hcg[1] / 100;
+	var g = hcg[2] / 100;
+
+	var v = c + g * (1.0 - c);
+	var f = 0;
+
+	if (v > 0.0) {
+		f = c / v;
+	}
+
+	return [hcg[0], f * 100, v * 100];
+};
+
+convert.hcg.hsl = function (hcg) {
+	var c = hcg[1] / 100;
+	var g = hcg[2] / 100;
+
+	var l = g * (1.0 - c) + 0.5 * c;
+	var s = 0;
+
+	if (l > 0.0 && l < 0.5) {
+		s = c / (2 * l);
+	} else
+	if (l >= 0.5 && l < 1.0) {
+		s = c / (2 * (1 - l));
+	}
+
+	return [hcg[0], s * 100, l * 100];
+};
+
+convert.hcg.hwb = function (hcg) {
+	var c = hcg[1] / 100;
+	var g = hcg[2] / 100;
+	var v = c + g * (1.0 - c);
+	return [hcg[0], (v - c) * 100, (1 - v) * 100];
+};
+
+convert.hwb.hcg = function (hwb) {
+	var w = hwb[1] / 100;
+	var b = hwb[2] / 100;
+	var v = 1 - b;
+	var c = v - w;
+	var g = 0;
+
+	if (c < 1) {
+		g = (v - c) / (1 - c);
+	}
+
+	return [hwb[0], c * 100, g * 100];
+};
+
+convert.apple.rgb = function (apple) {
+	return [(apple[0] / 65535) * 255, (apple[1] / 65535) * 255, (apple[2] / 65535) * 255];
+};
+
+convert.rgb.apple = function (rgb) {
+	return [(rgb[0] / 255) * 65535, (rgb[1] / 255) * 65535, (rgb[2] / 255) * 65535];
+};
+
+convert.gray.rgb = function (args) {
+	return [args[0] / 100 * 255, args[0] / 100 * 255, args[0] / 100 * 255];
+};
+
+convert.gray.hsl = convert.gray.hsv = function (args) {
+	return [0, 0, args[0]];
+};
+
+convert.gray.hwb = function (gray) {
+	return [0, 100, gray[0]];
+};
+
+convert.gray.cmyk = function (gray) {
+	return [0, 0, 0, gray[0]];
+};
+
+convert.gray.lab = function (gray) {
+	return [gray[0], 0, 0];
+};
+
+convert.gray.hex = function (gray) {
+	var val = Math.round(gray[0] / 100 * 255) & 0xFF;
+	var integer = (val << 16) + (val << 8) + val;
+
+	var string = integer.toString(16).toUpperCase();
+	return '000000'.substring(string.length) + string;
+};
+
+convert.rgb.gray = function (rgb) {
+	var val = (rgb[0] + rgb[1] + rgb[2]) / 3;
+	return [val / 255 * 100];
+};
diff --git a/igv_component/node_modules/color-convert/index.js b/igv_component/node_modules/color-convert/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..e65b5d775da3530c9e53fad82f3f0a76d571480e
--- /dev/null
+++ b/igv_component/node_modules/color-convert/index.js
@@ -0,0 +1,78 @@
+var conversions = require('./conversions');
+var route = require('./route');
+
+var convert = {};
+
+var models = Object.keys(conversions);
+
+function wrapRaw(fn) {
+	var wrappedFn = function (args) {
+		if (args === undefined || args === null) {
+			return args;
+		}
+
+		if (arguments.length > 1) {
+			args = Array.prototype.slice.call(arguments);
+		}
+
+		return fn(args);
+	};
+
+	// preserve .conversion property if there is one
+	if ('conversion' in fn) {
+		wrappedFn.conversion = fn.conversion;
+	}
+
+	return wrappedFn;
+}
+
+function wrapRounded(fn) {
+	var wrappedFn = function (args) {
+		if (args === undefined || args === null) {
+			return args;
+		}
+
+		if (arguments.length > 1) {
+			args = Array.prototype.slice.call(arguments);
+		}
+
+		var result = fn(args);
+
+		// we're assuming the result is an array here.
+		// see notice in conversions.js; don't use box types
+		// in conversion functions.
+		if (typeof result === 'object') {
+			for (var len = result.length, i = 0; i < len; i++) {
+				result[i] = Math.round(result[i]);
+			}
+		}
+
+		return result;
+	};
+
+	// preserve .conversion property if there is one
+	if ('conversion' in fn) {
+		wrappedFn.conversion = fn.conversion;
+	}
+
+	return wrappedFn;
+}
+
+models.forEach(function (fromModel) {
+	convert[fromModel] = {};
+
+	Object.defineProperty(convert[fromModel], 'channels', {value: conversions[fromModel].channels});
+	Object.defineProperty(convert[fromModel], 'labels', {value: conversions[fromModel].labels});
+
+	var routes = route(fromModel);
+	var routeModels = Object.keys(routes);
+
+	routeModels.forEach(function (toModel) {
+		var fn = routes[toModel];
+
+		convert[fromModel][toModel] = wrapRounded(fn);
+		convert[fromModel][toModel].raw = wrapRaw(fn);
+	});
+});
+
+module.exports = convert;
diff --git a/igv_component/node_modules/color-convert/package.json b/igv_component/node_modules/color-convert/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..dfbc471407ff4ccbcaabf2e072aeb4470950af61
--- /dev/null
+++ b/igv_component/node_modules/color-convert/package.json
@@ -0,0 +1,46 @@
+{
+  "name": "color-convert",
+  "description": "Plain color conversion functions",
+  "version": "1.9.3",
+  "author": "Heather Arthur <fayearthur@gmail.com>",
+  "license": "MIT",
+  "repository": "Qix-/color-convert",
+  "scripts": {
+    "pretest": "xo",
+    "test": "node test/basic.js"
+  },
+  "keywords": [
+    "color",
+    "colour",
+    "convert",
+    "converter",
+    "conversion",
+    "rgb",
+    "hsl",
+    "hsv",
+    "hwb",
+    "cmyk",
+    "ansi",
+    "ansi16"
+  ],
+  "files": [
+    "index.js",
+    "conversions.js",
+    "css-keywords.js",
+    "route.js"
+  ],
+  "xo": {
+    "rules": {
+      "default-case": 0,
+      "no-inline-comments": 0,
+      "operator-linebreak": 0
+    }
+  },
+  "devDependencies": {
+    "chalk": "1.1.1",
+    "xo": "0.11.2"
+  },
+  "dependencies": {
+    "color-name": "1.1.3"
+  }
+}
diff --git a/igv_component/node_modules/color-convert/route.js b/igv_component/node_modules/color-convert/route.js
new file mode 100644
index 0000000000000000000000000000000000000000..0a1fdea689e2a708b6a00f7988b69c27746ee9c7
--- /dev/null
+++ b/igv_component/node_modules/color-convert/route.js
@@ -0,0 +1,97 @@
+var conversions = require('./conversions');
+
+/*
+	this function routes a model to all other models.
+
+	all functions that are routed have a property `.conversion` attached
+	to the returned synthetic function. This property is an array
+	of strings, each with the steps in between the 'from' and 'to'
+	color models (inclusive).
+
+	conversions that are not possible simply are not included.
+*/
+
+function buildGraph() {
+	var graph = {};
+	// https://jsperf.com/object-keys-vs-for-in-with-closure/3
+	var models = Object.keys(conversions);
+
+	for (var len = models.length, i = 0; i < len; i++) {
+		graph[models[i]] = {
+			// http://jsperf.com/1-vs-infinity
+			// micro-opt, but this is simple.
+			distance: -1,
+			parent: null
+		};
+	}
+
+	return graph;
+}
+
+// https://en.wikipedia.org/wiki/Breadth-first_search
+function deriveBFS(fromModel) {
+	var graph = buildGraph();
+	var queue = [fromModel]; // unshift -> queue -> pop
+
+	graph[fromModel].distance = 0;
+
+	while (queue.length) {
+		var current = queue.pop();
+		var adjacents = Object.keys(conversions[current]);
+
+		for (var len = adjacents.length, i = 0; i < len; i++) {
+			var adjacent = adjacents[i];
+			var node = graph[adjacent];
+
+			if (node.distance === -1) {
+				node.distance = graph[current].distance + 1;
+				node.parent = current;
+				queue.unshift(adjacent);
+			}
+		}
+	}
+
+	return graph;
+}
+
+function link(from, to) {
+	return function (args) {
+		return to(from(args));
+	};
+}
+
+function wrapConversion(toModel, graph) {
+	var path = [graph[toModel].parent, toModel];
+	var fn = conversions[graph[toModel].parent][toModel];
+
+	var cur = graph[toModel].parent;
+	while (graph[cur].parent) {
+		path.unshift(graph[cur].parent);
+		fn = link(conversions[graph[cur].parent][cur], fn);
+		cur = graph[cur].parent;
+	}
+
+	fn.conversion = path;
+	return fn;
+}
+
+module.exports = function (fromModel) {
+	var graph = deriveBFS(fromModel);
+	var conversion = {};
+
+	var models = Object.keys(graph);
+	for (var len = models.length, i = 0; i < len; i++) {
+		var toModel = models[i];
+		var node = graph[toModel];
+
+		if (node.parent === null) {
+			// no possible conversion, or this node is the source model.
+			continue;
+		}
+
+		conversion[toModel] = wrapConversion(toModel, graph);
+	}
+
+	return conversion;
+};
+
diff --git a/igv_component/node_modules/color-name/.eslintrc.json b/igv_component/node_modules/color-name/.eslintrc.json
new file mode 100644
index 0000000000000000000000000000000000000000..c50c250446ee6d06a87a590ecbf3905696b0871d
--- /dev/null
+++ b/igv_component/node_modules/color-name/.eslintrc.json
@@ -0,0 +1,43 @@
+{
+    "env": {
+        "browser": true,
+        "node": true,
+        "commonjs": true,
+        "es6": true
+    },
+    "extends": "eslint:recommended",
+    "rules": {
+        "strict": 2,
+        "indent": 0,
+        "linebreak-style": 0,
+        "quotes": 0,
+        "semi": 0,
+        "no-cond-assign": 1,
+        "no-constant-condition": 1,
+        "no-duplicate-case": 1,
+        "no-empty": 1,
+        "no-ex-assign": 1,
+        "no-extra-boolean-cast": 1,
+        "no-extra-semi": 1,
+        "no-fallthrough": 1,
+        "no-func-assign": 1,
+        "no-global-assign": 1,
+        "no-implicit-globals": 2,
+        "no-inner-declarations": ["error", "functions"],
+        "no-irregular-whitespace": 2,
+        "no-loop-func": 1,
+        "no-multi-str": 1,
+        "no-mixed-spaces-and-tabs": 1,
+        "no-proto": 1,
+        "no-sequences": 1,
+        "no-throw-literal": 1,
+        "no-unmodified-loop-condition": 1,
+        "no-useless-call": 1,
+        "no-void": 1,
+        "no-with": 2,
+        "wrap-iife": 1,
+        "no-redeclare": 1,
+        "no-unused-vars": ["error", { "vars": "all", "args": "none" }],
+        "no-sparse-arrays": 1
+    }
+}
diff --git a/igv_component/node_modules/color-name/.npmignore b/igv_component/node_modules/color-name/.npmignore
new file mode 100644
index 0000000000000000000000000000000000000000..3854c07dc6e56fb0f62b3bf210d7b62e95aac733
--- /dev/null
+++ b/igv_component/node_modules/color-name/.npmignore
@@ -0,0 +1,107 @@
+//this will affect all the git repos
+git config --global core.excludesfile ~/.gitignore
+
+
+//update files since .ignore won't if already tracked
+git rm --cached <file>
+
+# Compiled source #
+###################
+*.com
+*.class
+*.dll
+*.exe
+*.o
+*.so
+
+# Packages #
+############
+# it's better to unpack these files and commit the raw source
+# git has its own built in compression methods
+*.7z
+*.dmg
+*.gz
+*.iso
+*.jar
+*.rar
+*.tar
+*.zip
+
+# Logs and databases #
+######################
+*.log
+*.sql
+*.sqlite
+
+# OS generated files #
+######################
+.DS_Store
+.DS_Store?
+._*
+.Spotlight-V100
+.Trashes
+# Icon?
+ehthumbs.db
+Thumbs.db
+.cache
+.project
+.settings
+.tmproj
+*.esproj
+nbproject
+
+# Numerous always-ignore extensions #
+#####################################
+*.diff
+*.err
+*.orig
+*.rej
+*.swn
+*.swo
+*.swp
+*.vi
+*~
+*.sass-cache
+*.grunt
+*.tmp
+
+# Dreamweaver added files #
+###########################
+_notes
+dwsync.xml
+
+# Komodo #
+###########################
+*.komodoproject
+.komodotools
+
+# Node #
+#####################
+node_modules
+
+# Bower #
+#####################
+bower_components
+
+# Folders to ignore #
+#####################
+.hg
+.svn
+.CVS
+intermediate
+publish
+.idea
+.graphics
+_test
+_archive
+uploads
+tmp
+
+# Vim files to ignore #
+#######################
+.VimballRecord
+.netrwhist
+
+bundle.*
+
+_demo
\ No newline at end of file
diff --git a/igv_component/node_modules/color-name/LICENSE b/igv_component/node_modules/color-name/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..4d9802a89e299942d0ddef0240077019c5676ea7
--- /dev/null
+++ b/igv_component/node_modules/color-name/LICENSE
@@ -0,0 +1,8 @@
+The MIT License (MIT)
+Copyright (c) 2015 Dmitry Ivanov
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
\ No newline at end of file
diff --git a/igv_component/node_modules/color-name/README.md b/igv_component/node_modules/color-name/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..3611a6b523fe851a404b82b38d38ffb22921d2f4
--- /dev/null
+++ b/igv_component/node_modules/color-name/README.md
@@ -0,0 +1,11 @@
+A JSON with color names and its values. Based on http://dev.w3.org/csswg/css-color/#named-colors.
+
+[![NPM](https://nodei.co/npm/color-name.png?mini=true)](https://nodei.co/npm/color-name/)
+
+
+```js
+var colors = require('color-name');
+colors.red //[255,0,0]
+```
+
+<a href="LICENSE"><img src="https://upload.wikimedia.org/wikipedia/commons/0/0c/MIT_logo.svg" width="120"/></a>
diff --git a/igv_component/node_modules/color-name/index.js b/igv_component/node_modules/color-name/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..e42aa68a542d9e176b5fd050c35b1af11659b2a3
--- /dev/null
+++ b/igv_component/node_modules/color-name/index.js
@@ -0,0 +1,152 @@
+'use strict'
+
+module.exports = {
+	"aliceblue": [240, 248, 255],
+	"antiquewhite": [250, 235, 215],
+	"aqua": [0, 255, 255],
+	"aquamarine": [127, 255, 212],
+	"azure": [240, 255, 255],
+	"beige": [245, 245, 220],
+	"bisque": [255, 228, 196],
+	"black": [0, 0, 0],
+	"blanchedalmond": [255, 235, 205],
+	"blue": [0, 0, 255],
+	"blueviolet": [138, 43, 226],
+	"brown": [165, 42, 42],
+	"burlywood": [222, 184, 135],
+	"cadetblue": [95, 158, 160],
+	"chartreuse": [127, 255, 0],
+	"chocolate": [210, 105, 30],
+	"coral": [255, 127, 80],
+	"cornflowerblue": [100, 149, 237],
+	"cornsilk": [255, 248, 220],
+	"crimson": [220, 20, 60],
+	"cyan": [0, 255, 255],
+	"darkblue": [0, 0, 139],
+	"darkcyan": [0, 139, 139],
+	"darkgoldenrod": [184, 134, 11],
+	"darkgray": [169, 169, 169],
+	"darkgreen": [0, 100, 0],
+	"darkgrey": [169, 169, 169],
+	"darkkhaki": [189, 183, 107],
+	"darkmagenta": [139, 0, 139],
+	"darkolivegreen": [85, 107, 47],
+	"darkorange": [255, 140, 0],
+	"darkorchid": [153, 50, 204],
+	"darkred": [139, 0, 0],
+	"darksalmon": [233, 150, 122],
+	"darkseagreen": [143, 188, 143],
+	"darkslateblue": [72, 61, 139],
+	"darkslategray": [47, 79, 79],
+	"darkslategrey": [47, 79, 79],
+	"darkturquoise": [0, 206, 209],
+	"darkviolet": [148, 0, 211],
+	"deeppink": [255, 20, 147],
+	"deepskyblue": [0, 191, 255],
+	"dimgray": [105, 105, 105],
+	"dimgrey": [105, 105, 105],
+	"dodgerblue": [30, 144, 255],
+	"firebrick": [178, 34, 34],
+	"floralwhite": [255, 250, 240],
+	"forestgreen": [34, 139, 34],
+	"fuchsia": [255, 0, 255],
+	"gainsboro": [220, 220, 220],
+	"ghostwhite": [248, 248, 255],
+	"gold": [255, 215, 0],
+	"goldenrod": [218, 165, 32],
+	"gray": [128, 128, 128],
+	"green": [0, 128, 0],
+	"greenyellow": [173, 255, 47],
+	"grey": [128, 128, 128],
+	"honeydew": [240, 255, 240],
+	"hotpink": [255, 105, 180],
+	"indianred": [205, 92, 92],
+	"indigo": [75, 0, 130],
+	"ivory": [255, 255, 240],
+	"khaki": [240, 230, 140],
+	"lavender": [230, 230, 250],
+	"lavenderblush": [255, 240, 245],
+	"lawngreen": [124, 252, 0],
+	"lemonchiffon": [255, 250, 205],
+	"lightblue": [173, 216, 230],
+	"lightcoral": [240, 128, 128],
+	"lightcyan": [224, 255, 255],
+	"lightgoldenrodyellow": [250, 250, 210],
+	"lightgray": [211, 211, 211],
+	"lightgreen": [144, 238, 144],
+	"lightgrey": [211, 211, 211],
+	"lightpink": [255, 182, 193],
+	"lightsalmon": [255, 160, 122],
+	"lightseagreen": [32, 178, 170],
+	"lightskyblue": [135, 206, 250],
+	"lightslategray": [119, 136, 153],
+	"lightslategrey": [119, 136, 153],
+	"lightsteelblue": [176, 196, 222],
+	"lightyellow": [255, 255, 224],
+	"lime": [0, 255, 0],
+	"limegreen": [50, 205, 50],
+	"linen": [250, 240, 230],
+	"magenta": [255, 0, 255],
+	"maroon": [128, 0, 0],
+	"mediumaquamarine": [102, 205, 170],
+	"mediumblue": [0, 0, 205],
+	"mediumorchid": [186, 85, 211],
+	"mediumpurple": [147, 112, 219],
+	"mediumseagreen": [60, 179, 113],
+	"mediumslateblue": [123, 104, 238],
+	"mediumspringgreen": [0, 250, 154],
+	"mediumturquoise": [72, 209, 204],
+	"mediumvioletred": [199, 21, 133],
+	"midnightblue": [25, 25, 112],
+	"mintcream": [245, 255, 250],
+	"mistyrose": [255, 228, 225],
+	"moccasin": [255, 228, 181],
+	"navajowhite": [255, 222, 173],
+	"navy": [0, 0, 128],
+	"oldlace": [253, 245, 230],
+	"olive": [128, 128, 0],
+	"olivedrab": [107, 142, 35],
+	"orange": [255, 165, 0],
+	"orangered": [255, 69, 0],
+	"orchid": [218, 112, 214],
+	"palegoldenrod": [238, 232, 170],
+	"palegreen": [152, 251, 152],
+	"paleturquoise": [175, 238, 238],
+	"palevioletred": [219, 112, 147],
+	"papayawhip": [255, 239, 213],
+	"peachpuff": [255, 218, 185],
+	"peru": [205, 133, 63],
+	"pink": [255, 192, 203],
+	"plum": [221, 160, 221],
+	"powderblue": [176, 224, 230],
+	"purple": [128, 0, 128],
+	"rebeccapurple": [102, 51, 153],
+	"red": [255, 0, 0],
+	"rosybrown": [188, 143, 143],
+	"royalblue": [65, 105, 225],
+	"saddlebrown": [139, 69, 19],
+	"salmon": [250, 128, 114],
+	"sandybrown": [244, 164, 96],
+	"seagreen": [46, 139, 87],
+	"seashell": [255, 245, 238],
+	"sienna": [160, 82, 45],
+	"silver": [192, 192, 192],
+	"skyblue": [135, 206, 235],
+	"slateblue": [106, 90, 205],
+	"slategray": [112, 128, 144],
+	"slategrey": [112, 128, 144],
+	"snow": [255, 250, 250],
+	"springgreen": [0, 255, 127],
+	"steelblue": [70, 130, 180],
+	"tan": [210, 180, 140],
+	"teal": [0, 128, 128],
+	"thistle": [216, 191, 216],
+	"tomato": [255, 99, 71],
+	"turquoise": [64, 224, 208],
+	"violet": [238, 130, 238],
+	"wheat": [245, 222, 179],
+	"white": [255, 255, 255],
+	"whitesmoke": [245, 245, 245],
+	"yellow": [255, 255, 0],
+	"yellowgreen": [154, 205, 50]
+};
diff --git a/igv_component/node_modules/color-name/package.json b/igv_component/node_modules/color-name/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..d061123ef02f40a2c129c0bbd24f4459c0c4468f
--- /dev/null
+++ b/igv_component/node_modules/color-name/package.json
@@ -0,0 +1,25 @@
+{
+  "name": "color-name",
+  "version": "1.1.3",
+  "description": "A list of color names and its values",
+  "main": "index.js",
+  "scripts": {
+    "test": "node test.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git@github.com:dfcreative/color-name.git"
+  },
+  "keywords": [
+    "color-name",
+    "color",
+    "color-keyword",
+    "keyword"
+  ],
+  "author": "DY <dfcreative@gmail.com>",
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/dfcreative/color-name/issues"
+  },
+  "homepage": "https://github.com/dfcreative/color-name"
+}
diff --git a/igv_component/node_modules/color-name/test.js b/igv_component/node_modules/color-name/test.js
new file mode 100644
index 0000000000000000000000000000000000000000..7a08746215ed3cd497b5592978772c47adc4a71f
--- /dev/null
+++ b/igv_component/node_modules/color-name/test.js
@@ -0,0 +1,7 @@
+'use strict'
+
+var names = require('./');
+var assert = require('assert');
+
+assert.deepEqual(names.red, [255,0,0]);
+assert.deepEqual(names.aliceblue, [240,248,255]);
diff --git a/igv_component/node_modules/command-line-args/LICENSE b/igv_component/node_modules/command-line-args/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..07fadb42e25a2292bf0ed93e9bb2d9607e6c8e0b
--- /dev/null
+++ b/igv_component/node_modules/command-line-args/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014-22 Lloyd Brookes <75pound@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/igv_component/node_modules/command-line-args/README.md b/igv_component/node_modules/command-line-args/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..d7003b894ff676b92df11e97e58346b6f3a0b7a5
--- /dev/null
+++ b/igv_component/node_modules/command-line-args/README.md
@@ -0,0 +1,105 @@
+[![view on npm](https://badgen.net/npm/v/command-line-args)](https://www.npmjs.org/package/command-line-args)
+[![npm module downloads](https://badgen.net/npm/dt/command-line-args)](https://www.npmjs.org/package/command-line-args)
+[![Gihub repo dependents](https://badgen.net/github/dependents-repo/75lb/command-line-args)](https://github.com/75lb/command-line-args/network/dependents?dependent_type=REPOSITORY)
+[![Gihub package dependents](https://badgen.net/github/dependents-pkg/75lb/command-line-args)](https://github.com/75lb/command-line-args/network/dependents?dependent_type=PACKAGE)
+[![Node.js CI](https://github.com/75lb/command-line-args/actions/workflows/node.js.yml/badge.svg)](https://github.com/75lb/command-line-args/actions/workflows/node.js.yml)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/command-line-args/badge.svg)](https://coveralls.io/github/75lb/command-line-args)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+***Upgraders, please read the [release notes](https://github.com/75lb/command-line-args/releases)***
+
+# command-line-args
+
+A mature, feature-complete library to parse command-line options.
+
+## Synopsis
+
+You can set options using the main notation standards ([learn more](https://github.com/75lb/command-line-args/wiki/Notation-rules)). These commands are all equivalent, setting the same values:
+```
+$ example --verbose --timeout=1000 --src one.js --src two.js
+$ example --verbose --timeout 1000 --src one.js two.js
+$ example -vt 1000 --src one.js two.js
+$ example -vt 1000 one.js two.js
+```
+
+To access the values, first create a list of [option definitions](https://github.com/75lb/command-line-args/blob/master/doc/option-definition.md) describing the options your application accepts. The [`type`](https://github.com/75lb/command-line-args/blob/master/doc/option-definition.md#optiontype--function) property is a setter function (the value supplied is passed through this), giving you full control over the value received.
+
+```js
+const optionDefinitions = [
+  { name: 'verbose', alias: 'v', type: Boolean },
+  { name: 'src', type: String, multiple: true, defaultOption: true },
+  { name: 'timeout', alias: 't', type: Number }
+]
+```
+
+Next, parse the options using [commandLineArgs()](https://github.com/75lb/command-line-args/blob/master/doc/API.md#commandlineargsoptiondefinitions-options--object-):
+```js
+const commandLineArgs = require('command-line-args')
+const options = commandLineArgs(optionDefinitions)
+```
+
+`options` now looks like this:
+```js
+{
+  src: [
+    'one.js',
+    'two.js'
+  ],
+  verbose: true,
+  timeout: 1000
+}
+```
+
+### Advanced usage
+
+Beside the above typical usage, you can configure command-line-args to accept more advanced syntax forms.
+
+* [Command-based syntax](https://github.com/75lb/command-line-args/wiki/Implement-command-parsing-(git-style)) (git style) in the form:
+
+  ```
+  $ executable <command> [options]
+  ```
+
+  For example.
+
+  ```
+  $ git commit --squash -m "This is my commit message"
+  ```
+
+* [Command and sub-command syntax](https://github.com/75lb/command-line-args/wiki/Implement-multiple-command-parsing-(docker-style)) (docker style) in the form:
+
+  ```
+  $ executable <command> [options] <sub-command> [options]
+  ```
+
+  For example.
+
+  ```
+  $ docker run --detached --image centos bash -c yum install -y httpd
+  ```
+
+## Usage guide generation
+
+A usage guide (typically printed when `--help` is set) can be generated using [command-line-usage](https://github.com/75lb/command-line-usage). See the examples below and [read the documentation](https://github.com/75lb/command-line-usage) for instructions how to create them.
+
+A typical usage guide example.
+
+![usage](https://raw.githubusercontent.com/75lb/command-line-usage/master/example/screens/footer.png)
+
+The [polymer-cli](https://github.com/Polymer/polymer-cli/) usage guide is a good real-life example.
+
+![usage](https://raw.githubusercontent.com/75lb/command-line-usage/master/example/screens/polymer.png)
+
+## Further Reading
+
+There is plenty more to learn, please see [the wiki](https://github.com/75lb/command-line-args/wiki) for examples and documentation.
+
+## Install
+
+```sh
+$ npm install command-line-args --save
+```
+
+* * *
+
+&copy; 2014-22 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/75lb/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/command-line-args/dist/index.js b/igv_component/node_modules/command-line-args/dist/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..90a0c5e655bf0ad9ad78b7d77bf3be1885d1c56f
--- /dev/null
+++ b/igv_component/node_modules/command-line-args/dist/index.js
@@ -0,0 +1,1399 @@
+'use strict';
+
+function _interopDefault (ex) { return (ex && (typeof ex === 'object') && 'default' in ex) ? ex['default'] : ex; }
+
+var camelCase = _interopDefault(require('lodash.camelcase'));
+
+/**
+ * Takes any input and guarantees an array back.
+ *
+ * - Converts array-like objects (e.g. `arguments`, `Set`) to a real array.
+ * - Converts `undefined` to an empty array.
+ * - Converts any another other, singular value (including `null`, objects and iterables other than `Set`) into an array containing that value.
+ * - Ignores input which is already an array.
+ *
+ * @module array-back
+ * @example
+ * > const arrayify = require('array-back')
+ *
+ * > arrayify(undefined)
+ * []
+ *
+ * > arrayify(null)
+ * [ null ]
+ *
+ * > arrayify(0)
+ * [ 0 ]
+ *
+ * > arrayify([ 1, 2 ])
+ * [ 1, 2 ]
+ *
+ * > arrayify(new Set([ 1, 2 ]))
+ * [ 1, 2 ]
+ *
+ * > function f(){ return arrayify(arguments); }
+ * > f(1,2,3)
+ * [ 1, 2, 3 ]
+ */
+
+function isObject (input) {
+  return typeof input === 'object' && input !== null
+}
+
+function isArrayLike (input) {
+  return isObject(input) && typeof input.length === 'number'
+}
+
+/**
+ * @param {*} - The input value to convert to an array
+ * @returns {Array}
+ * @alias module:array-back
+ */
+function arrayify (input) {
+  if (Array.isArray(input)) {
+    return input
+  }
+
+  if (input === undefined) {
+    return []
+  }
+
+  if (isArrayLike(input) || input instanceof Set) {
+    return Array.from(input)
+  }
+
+  return [ input ]
+}
+
+/**
+ * Takes any input and guarantees an array back.
+ *
+ * - converts array-like objects (e.g. `arguments`) to a real array
+ * - converts `undefined` to an empty array
+ * - converts any another other, singular value (including `null`) into an array containing that value
+ * - ignores input which is already an array
+ *
+ * @module array-back
+ * @example
+ * > const arrayify = require('array-back')
+ *
+ * > arrayify(undefined)
+ * []
+ *
+ * > arrayify(null)
+ * [ null ]
+ *
+ * > arrayify(0)
+ * [ 0 ]
+ *
+ * > arrayify([ 1, 2 ])
+ * [ 1, 2 ]
+ *
+ * > function f(){ return arrayify(arguments); }
+ * > f(1,2,3)
+ * [ 1, 2, 3 ]
+ */
+
+function isObject$1 (input) {
+  return typeof input === 'object' && input !== null
+}
+
+function isArrayLike$1 (input) {
+  return isObject$1(input) && typeof input.length === 'number'
+}
+
+/**
+ * @param {*} - the input value to convert to an array
+ * @returns {Array}
+ * @alias module:array-back
+ */
+function arrayify$1 (input) {
+  if (Array.isArray(input)) {
+    return input
+  } else {
+    if (input === undefined) {
+      return []
+    } else if (isArrayLike$1(input)) {
+      return Array.prototype.slice.call(input)
+    } else {
+      return [ input ]
+    }
+  }
+}
+
+/**
+ * Find and either replace or remove items in an array.
+ *
+ * @module find-replace
+ * @example
+ * > const findReplace = require('find-replace')
+ * > const numbers = [ 1, 2, 3]
+ *
+ * > findReplace(numbers, n => n === 2, 'two')
+ * [ 1, 'two', 3 ]
+ *
+ * > findReplace(numbers, n => n === 2, [ 'two', 'zwei' ])
+ * [ 1, [ 'two', 'zwei' ], 3 ]
+ *
+ * > findReplace(numbers, n => n === 2, 'two', 'zwei')
+ * [ 1, 'two', 'zwei', 3 ]
+ *
+ * > findReplace(numbers, n => n === 2) // no replacement, so remove
+ * [ 1, 3 ]
+ */
+
+/**
+ * @param {array} - The input array
+ * @param {testFn} - A predicate function which, if returning `true` causes the current item to be operated on.
+ * @param [replaceWith] {...any} - If specified, found values will be replaced with these values, else removed.
+ * @returns {array}
+ * @alias module:find-replace
+ */
+function findReplace (array, testFn) {
+  const found = [];
+  const replaceWiths = arrayify$1(arguments);
+  replaceWiths.splice(0, 2);
+
+  arrayify$1(array).forEach((value, index) => {
+    let expanded = [];
+    replaceWiths.forEach(replaceWith => {
+      if (typeof replaceWith === 'function') {
+        expanded = expanded.concat(replaceWith(value));
+      } else {
+        expanded.push(replaceWith);
+      }
+    });
+
+    if (testFn(value)) {
+      found.push({
+        index: index,
+        replaceWithValue: expanded
+      });
+    }
+  });
+
+  found.reverse().forEach(item => {
+    const spliceArgs = [ item.index, 1 ].concat(item.replaceWithValue);
+    array.splice.apply(array, spliceArgs);
+  });
+
+  return array
+}
+
+/**
+ * Some useful tools for working with `process.argv`.
+ *
+ * @module argv-tools
+ * @typicalName argvTools
+ * @example
+ * const argvTools = require('argv-tools')
+ */
+
+/**
+ * Regular expressions for matching option formats.
+ * @static
+ */
+const re = {
+  short: /^-([^\d-])$/,
+  long: /^--(\S+)/,
+  combinedShort: /^-[^\d-]{2,}$/,
+  optEquals: /^(--\S+?)=(.*)/
+};
+
+/**
+ * Array subclass encapsulating common operations on `process.argv`.
+ * @static
+ */
+class ArgvArray extends Array {
+  /**
+   * Clears the array has loads the supplied input.
+   * @param {string[]} argv - The argv list to load. Defaults to `process.argv`.
+   */
+  load (argv) {
+    this.clear();
+    if (argv && argv !== process.argv) {
+      argv = arrayify(argv);
+    } else {
+      /* if no argv supplied, assume we are parsing process.argv */
+      argv = process.argv.slice(0);
+      const deleteCount = process.execArgv.some(isExecArg) ? 1 : 2;
+      argv.splice(0, deleteCount);
+    }
+    argv.forEach(arg => this.push(String(arg)));
+  }
+
+  /**
+   * Clear the array.
+   */
+  clear () {
+    this.length = 0;
+  }
+
+  /**
+   * expand ``--option=value` style args.
+   */
+  expandOptionEqualsNotation () {
+    if (this.some(arg => re.optEquals.test(arg))) {
+      const expandedArgs = [];
+      this.forEach(arg => {
+        const matches = arg.match(re.optEquals);
+        if (matches) {
+          expandedArgs.push(matches[1], matches[2]);
+        } else {
+          expandedArgs.push(arg);
+        }
+      });
+      this.clear();
+      this.load(expandedArgs);
+    }
+  }
+
+  /**
+   * expand getopt-style combinedShort options.
+   */
+  expandGetoptNotation () {
+    if (this.hasCombinedShortOptions()) {
+      findReplace(this, re.combinedShort, expandCombinedShortArg);
+    }
+  }
+
+  /**
+   * Returns true if the array contains combined short options (e.g. `-ab`).
+   * @returns {boolean}
+   */
+  hasCombinedShortOptions () {
+    return this.some(arg => re.combinedShort.test(arg))
+  }
+
+  static from (argv) {
+    const result = new this();
+    result.load(argv);
+    return result
+  }
+}
+
+/**
+ * Expand a combined short option.
+ * @param {string} - the string to expand, e.g. `-ab`
+ * @returns {string[]}
+ * @static
+ */
+function expandCombinedShortArg (arg) {
+  /* remove initial hypen */
+  arg = arg.slice(1);
+  return arg.split('').map(letter => '-' + letter)
+}
+
+/**
+ * Returns true if the supplied arg matches `--option=value` notation.
+ * @param {string} - the arg to test, e.g. `--one=something`
+ * @returns {boolean}
+ * @static
+ */
+function isOptionEqualsNotation (arg) {
+  return re.optEquals.test(arg)
+}
+
+/**
+ * Returns true if the supplied arg is in either long (`--one`) or short (`-o`) format.
+ * @param {string} - the arg to test, e.g. `--one`
+ * @returns {boolean}
+ * @static
+ */
+function isOption (arg) {
+  return (re.short.test(arg) || re.long.test(arg)) && !re.optEquals.test(arg)
+}
+
+/**
+ * Returns true if the supplied arg is in long (`--one`) format.
+ * @param {string} - the arg to test, e.g. `--one`
+ * @returns {boolean}
+ * @static
+ */
+function isLongOption (arg) {
+  return re.long.test(arg) && !isOptionEqualsNotation(arg)
+}
+
+/**
+ * Returns the name from a long, short or `--options=value` arg.
+ * @param {string} - the arg to inspect, e.g. `--one`
+ * @returns {string}
+ * @static
+ */
+function getOptionName (arg) {
+  if (re.short.test(arg)) {
+    return arg.match(re.short)[1]
+  } else if (isLongOption(arg)) {
+    return arg.match(re.long)[1]
+  } else if (isOptionEqualsNotation(arg)) {
+    return arg.match(re.optEquals)[1].replace(/^--/, '')
+  } else {
+    return null
+  }
+}
+
+function isValue (arg) {
+  return !(isOption(arg) || re.combinedShort.test(arg) || re.optEquals.test(arg))
+}
+
+function isExecArg (arg) {
+  return ['--eval', '-e'].indexOf(arg) > -1 || arg.startsWith('--eval=')
+}
+
+/**
+ * For type-checking Javascript values.
+ * @module typical
+ * @typicalname t
+ * @example
+ * const t = require('typical')
+ */
+
+/**
+ * Returns true if input is a number
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isNumber(0)
+ * true
+ * > t.isNumber(1)
+ * true
+ * > t.isNumber(1.1)
+ * true
+ * > t.isNumber(0xff)
+ * true
+ * > t.isNumber(0644)
+ * true
+ * > t.isNumber(6.2e5)
+ * true
+ * > t.isNumber(NaN)
+ * false
+ * > t.isNumber(Infinity)
+ * false
+ */
+function isNumber (n) {
+  return !isNaN(parseFloat(n)) && isFinite(n)
+}
+
+/**
+ * A plain object is a simple object literal, it is not an instance of a class. Returns true if the input `typeof` is `object` and directly decends from `Object`.
+ *
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isPlainObject({ something: 'one' })
+ * true
+ * > t.isPlainObject(new Date())
+ * false
+ * > t.isPlainObject([ 0, 1 ])
+ * false
+ * > t.isPlainObject(/test/)
+ * false
+ * > t.isPlainObject(1)
+ * false
+ * > t.isPlainObject('one')
+ * false
+ * > t.isPlainObject(null)
+ * false
+ * > t.isPlainObject((function * () {})())
+ * false
+ * > t.isPlainObject(function * () {})
+ * false
+ */
+function isPlainObject (input) {
+  return input !== null && typeof input === 'object' && input.constructor === Object
+}
+
+/**
+ * An array-like value has all the properties of an array, but is not an array instance. Examples in the `arguments` object. Returns true if the input value is an object, not null and has a `length` property with a numeric value.
+ *
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * function sum(x, y){
+ *     console.log(t.isArrayLike(arguments))
+ *     // prints `true`
+ * }
+ */
+function isArrayLike$2 (input) {
+  return isObject$2(input) && typeof input.length === 'number'
+}
+
+/**
+ * returns true if the typeof input is `'object'`, but not null!
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isObject$2 (input) {
+  return typeof input === 'object' && input !== null
+}
+
+/**
+ * Returns true if the input value is defined
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isDefined (input) {
+  return typeof input !== 'undefined'
+}
+
+/**
+ * Returns true if the input value is a string
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isString (input) {
+  return typeof input === 'string'
+}
+
+/**
+ * Returns true if the input value is a boolean
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isBoolean (input) {
+  return typeof input === 'boolean'
+}
+
+/**
+ * Returns true if the input value is a function
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isFunction (input) {
+  return typeof input === 'function'
+}
+
+/**
+ * Returns true if the input value is an es2015 `class`.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isClass (input) {
+  if (isFunction(input)) {
+    return /^class /.test(Function.prototype.toString.call(input))
+  } else {
+    return false
+  }
+}
+
+/**
+ * Returns true if the input is a string, number, symbol, boolean, null or undefined value.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isPrimitive (input) {
+  if (input === null) return true
+  switch (typeof input) {
+    case 'string':
+    case 'number':
+    case 'symbol':
+    case 'undefined':
+    case 'boolean':
+      return true
+    default:
+      return false
+  }
+}
+
+/**
+ * Returns true if the input is a Promise.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isPromise (input) {
+  if (input) {
+    const isPromise = isDefined(Promise) && input instanceof Promise;
+    const isThenable = input.then && typeof input.then === 'function';
+    return !!(isPromise || isThenable)
+  } else {
+    return false
+  }
+}
+
+/**
+ * Returns true if the input is an iterable (`Map`, `Set`, `Array`, Generator etc.).
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isIterable('string')
+ * true
+ * > t.isIterable(new Map())
+ * true
+ * > t.isIterable([])
+ * true
+ * > t.isIterable((function * () {})())
+ * true
+ * > t.isIterable(Promise.resolve())
+ * false
+ * > t.isIterable(Promise)
+ * false
+ * > t.isIterable(true)
+ * false
+ * > t.isIterable({})
+ * false
+ * > t.isIterable(0)
+ * false
+ * > t.isIterable(1.1)
+ * false
+ * > t.isIterable(NaN)
+ * false
+ * > t.isIterable(Infinity)
+ * false
+ * > t.isIterable(function () {})
+ * false
+ * > t.isIterable(Date)
+ * false
+ * > t.isIterable()
+ * false
+ * > t.isIterable({ then: function () {} })
+ * false
+ */
+function isIterable (input) {
+  if (input === null || !isDefined(input)) {
+    return false
+  } else {
+    return (
+      typeof input[Symbol.iterator] === 'function' ||
+      typeof input[Symbol.asyncIterator] === 'function'
+    )
+  }
+}
+
+var t = {
+  isNumber,
+  isString,
+  isBoolean,
+  isPlainObject,
+  isArrayLike: isArrayLike$2,
+  isObject: isObject$2,
+  isDefined,
+  isFunction,
+  isClass,
+  isPrimitive,
+  isPromise,
+  isIterable
+};
+
+/**
+ * @module option-definition
+ */
+
+/**
+ * Describes a command-line option. Additionally, if generating a usage guide with [command-line-usage](https://github.com/75lb/command-line-usage) you could optionally add `description` and `typeLabel` properties to each definition.
+ *
+ * @alias module:option-definition
+ * @typicalname option
+ */
+class OptionDefinition {
+  constructor (definition) {
+    /**
+    * The only required definition property is `name`, so the simplest working example is
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'file' },
+    *   { name: 'depth' }
+    * ]
+    * ```
+    *
+    * Where a `type` property is not specified it will default to `String`.
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | -------------------- | ------------ |
+    * | 1   | `--file` | `{ file: null }` |
+    * | 2   | `--file lib.js` | `{ file: 'lib.js' }` |
+    * | 3   | `--depth 2` | `{ depth: '2' }` |
+    *
+    * Unicode option names and aliases are valid, for example:
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'один' },
+    *   { name: '两' },
+    *   { name: 'три', alias: 'т' }
+    * ]
+    * ```
+    * @type {string}
+    */
+    this.name = definition.name;
+
+    /**
+    * The `type` value is a setter function (you receive the output from this), enabling you to be specific about the type and value received.
+    *
+    * The most common values used are `String` (the default), `Number` and `Boolean` but you can use a custom function, for example:
+    *
+    * ```js
+    * const fs = require('fs')
+    *
+    * class FileDetails {
+    *   constructor (filename) {
+    *     this.filename = filename
+    *     this.exists = fs.existsSync(filename)
+    *   }
+    * }
+    *
+    * const cli = commandLineArgs([
+    *   { name: 'file', type: filename => new FileDetails(filename) },
+    *   { name: 'depth', type: Number }
+    * ])
+    * ```
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ----------------- | ------------ |
+    * | 1   | `--file asdf.txt` | `{ file: { filename: 'asdf.txt', exists: false } }` |
+    *
+    * The `--depth` option expects a `Number`. If no value was set, you will receive `null`.
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ----------------- | ------------ |
+    * | 2   | `--depth` | `{ depth: null }` |
+    * | 3   | `--depth 2` | `{ depth: 2 }` |
+    *
+    * @type {function}
+    * @default String
+    */
+    this.type = definition.type || String;
+
+    /**
+    * getopt-style short option names. Can be any single character (unicode included) except a digit or hyphen.
+    *
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'hot', alias: 'h', type: Boolean },
+    *   { name: 'discount', alias: 'd', type: Boolean },
+    *   { name: 'courses', alias: 'c' , type: Number }
+    * ]
+    * ```
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ------------ | ------------ |
+    * | 1   | `-hcd` | `{ hot: true, courses: null, discount: true }` |
+    * | 2   | `-hdc 3` | `{ hot: true, discount: true, courses: 3 }` |
+    *
+    * @type {string}
+    */
+    this.alias = definition.alias;
+
+    /**
+    * Set this flag if the option takes a list of values. You will receive an array of values, each passed through the `type` function (if specified).
+    *
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'files', type: String, multiple: true }
+    * ]
+    * ```
+    *
+    * Note, examples 1 and 3 below demonstrate "greedy" parsing which can be disabled by using `lazyMultiple`.
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ------------ | ------------ |
+    * | 1   | `--files one.js two.js` | `{ files: [ 'one.js', 'two.js' ] }` |
+    * | 2   | `--files one.js --files two.js` | `{ files: [ 'one.js', 'two.js' ] }` |
+    * | 3   | `--files *` | `{ files: [ 'one.js', 'two.js' ] }` |
+    *
+    * @type {boolean}
+    */
+    this.multiple = definition.multiple;
+
+    /**
+     * Identical to `multiple` but with greedy parsing disabled.
+     *
+     * ```js
+     * const optionDefinitions = [
+     *   { name: 'files', lazyMultiple: true },
+     *   { name: 'verbose', alias: 'v', type: Boolean, lazyMultiple: true }
+     * ]
+     * ```
+     *
+     * | #   | argv input | commandLineArgs() output |
+     * | --- | ------------ | ------------ |
+     * | 1   | `--files one.js --files two.js` | `{ files: [ 'one.js', 'two.js' ] }` |
+     * | 2   | `-vvv` | `{ verbose: [ true, true, true ] }` |
+     *
+     * @type {boolean}
+     */
+    this.lazyMultiple = definition.lazyMultiple;
+
+    /**
+    * Any values unaccounted for by an option definition will be set on the `defaultOption`. This flag is typically set on the most commonly-used option to make for more concise usage (i.e. `$ example *.js` instead of `$ example --files *.js`).
+    *
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'files', multiple: true, defaultOption: true }
+    * ]
+    * ```
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ------------ | ------------ |
+    * | 1   | `--files one.js two.js` | `{ files: [ 'one.js', 'two.js' ] }` |
+    * | 2   | `one.js two.js` | `{ files: [ 'one.js', 'two.js' ] }` |
+    * | 3   | `*` | `{ files: [ 'one.js', 'two.js' ] }` |
+    *
+    * @type {boolean}
+    */
+    this.defaultOption = definition.defaultOption;
+
+    /**
+    * An initial value for the option.
+    *
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'files', multiple: true, defaultValue: [ 'one.js' ] },
+    *   { name: 'max', type: Number, defaultValue: 3 }
+    * ]
+    * ```
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ------------ | ------------ |
+    * | 1   |  | `{ files: [ 'one.js' ], max: 3 }` |
+    * | 2   | `--files two.js` | `{ files: [ 'two.js' ], max: 3 }` |
+    * | 3   | `--max 4` | `{ files: [ 'one.js' ], max: 4 }` |
+    *
+    * @type {*}
+    */
+    this.defaultValue = definition.defaultValue;
+
+    /**
+    * When your app has a large amount of options it makes sense to organise them in groups.
+    *
+    * There are two automatic groups: `_all` (contains all options) and `_none` (contains options without a `group` specified in their definition).
+    *
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'verbose', group: 'standard' },
+    *   { name: 'help', group: [ 'standard', 'main' ] },
+    *   { name: 'compress', group: [ 'server', 'main' ] },
+    *   { name: 'static', group: 'server' },
+    *   { name: 'debug' }
+    * ]
+    * ```
+    *
+    *<table>
+    *  <tr>
+    *    <th>#</th><th>Command Line</th><th>commandLineArgs() output</th>
+    *  </tr>
+    *  <tr>
+    *    <td>1</td><td><code>--verbose</code></td><td><pre><code>
+    *{
+    *  _all: { verbose: true },
+    *  standard: { verbose: true }
+    *}
+    *</code></pre></td>
+    *  </tr>
+    *  <tr>
+    *    <td>2</td><td><code>--debug</code></td><td><pre><code>
+    *{
+    *  _all: { debug: true },
+    *  _none: { debug: true }
+    *}
+    *</code></pre></td>
+    *  </tr>
+    *  <tr>
+    *    <td>3</td><td><code>--verbose --debug --compress</code></td><td><pre><code>
+    *{
+    *  _all: {
+    *    verbose: true,
+    *    debug: true,
+    *    compress: true
+    *  },
+    *  standard: { verbose: true },
+    *  server: { compress: true },
+    *  main: { compress: true },
+    *  _none: { debug: true }
+    *}
+    *</code></pre></td>
+    *  </tr>
+    *  <tr>
+    *    <td>4</td><td><code>--compress</code></td><td><pre><code>
+    *{
+    *  _all: { compress: true },
+    *  server: { compress: true },
+    *  main: { compress: true }
+    *}
+    *</code></pre></td>
+    *  </tr>
+    *</table>
+    *
+    * @type {string|string[]}
+    */
+    this.group = definition.group;
+
+    /* pick up any remaining properties */
+    for (const prop in definition) {
+      if (!this[prop]) this[prop] = definition[prop];
+    }
+  }
+
+  isBoolean () {
+    return this.type === Boolean || (t.isFunction(this.type) && this.type.name === 'Boolean')
+  }
+
+  isMultiple () {
+    return this.multiple || this.lazyMultiple
+  }
+
+  static create (def) {
+    const result = new this(def);
+    return result
+  }
+}
+
+/**
+ * @module option-definitions
+ */
+
+/**
+ * @alias module:option-definitions
+ */
+class Definitions extends Array {
+  /**
+   * validate option definitions
+   * @param {boolean} [caseInsensitive=false] - whether arguments will be parsed in a case insensitive manner
+   * @returns {string}
+   */
+  validate (caseInsensitive) {
+    const someHaveNoName = this.some(def => !def.name);
+    if (someHaveNoName) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Invalid option definitions: the `name` property is required on each definition'
+      );
+    }
+
+    const someDontHaveFunctionType = this.some(def => def.type && typeof def.type !== 'function');
+    if (someDontHaveFunctionType) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Invalid option definitions: the `type` property must be a setter fuction (default: `Boolean`)'
+      );
+    }
+
+    let invalidOption;
+
+    const numericAlias = this.some(def => {
+      invalidOption = def;
+      return t.isDefined(def.alias) && t.isNumber(def.alias)
+    });
+    if (numericAlias) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Invalid option definition: to avoid ambiguity an alias cannot be numeric [--' + invalidOption.name + ' alias is -' + invalidOption.alias + ']'
+      );
+    }
+
+    const multiCharacterAlias = this.some(def => {
+      invalidOption = def;
+      return t.isDefined(def.alias) && def.alias.length !== 1
+    });
+    if (multiCharacterAlias) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Invalid option definition: an alias must be a single character'
+      );
+    }
+
+    const hypenAlias = this.some(def => {
+      invalidOption = def;
+      return def.alias === '-'
+    });
+    if (hypenAlias) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Invalid option definition: an alias cannot be "-"'
+      );
+    }
+
+    const duplicateName = hasDuplicates(this.map(def => caseInsensitive ? def.name.toLowerCase() : def.name));
+    if (duplicateName) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Two or more option definitions have the same name'
+      );
+    }
+
+    const duplicateAlias = hasDuplicates(this.map(def => caseInsensitive && t.isDefined(def.alias) ? def.alias.toLowerCase() : def.alias));
+    if (duplicateAlias) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Two or more option definitions have the same alias'
+      );
+    }
+
+    const duplicateDefaultOption = this.filter(def => def.defaultOption === true).length > 1;
+    if (duplicateDefaultOption) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Only one option definition can be the defaultOption'
+      );
+    }
+
+    const defaultBoolean = this.some(def => {
+      invalidOption = def;
+      return def.isBoolean() && def.defaultOption
+    });
+    if (defaultBoolean) {
+      halt(
+        'INVALID_DEFINITIONS',
+        `A boolean option ["${invalidOption.name}"] can not also be the defaultOption.`
+      );
+    }
+  }
+
+  /**
+   * Get definition by option arg (e.g. `--one` or `-o`)
+   * @param {string} [arg] the argument name to get the definition for
+   * @param {boolean} [caseInsensitive] whether to use case insensitive comparisons when finding the appropriate definition
+   * @returns {Definition}
+   */
+  get (arg, caseInsensitive) {
+    if (isOption(arg)) {
+      if (re.short.test(arg)) {
+        const shortOptionName = getOptionName(arg);
+        if (caseInsensitive) {
+          const lowercaseShortOptionName = shortOptionName.toLowerCase();
+          return this.find(def => t.isDefined(def.alias) && def.alias.toLowerCase() === lowercaseShortOptionName)
+        } else {
+          return this.find(def => def.alias === shortOptionName)
+        }
+      } else {
+        const optionName = getOptionName(arg);
+        if (caseInsensitive) {
+          const lowercaseOptionName = optionName.toLowerCase();
+          return this.find(def => def.name.toLowerCase() === lowercaseOptionName)
+        } else {
+          return this.find(def => def.name === optionName)
+        }
+      }
+    } else {
+      return this.find(def => def.name === arg)
+    }
+  }
+
+  getDefault () {
+    return this.find(def => def.defaultOption === true)
+  }
+
+  isGrouped () {
+    return this.some(def => def.group)
+  }
+
+  whereGrouped () {
+    return this.filter(containsValidGroup)
+  }
+
+  whereNotGrouped () {
+    return this.filter(def => !containsValidGroup(def))
+  }
+
+  whereDefaultValueSet () {
+    return this.filter(def => t.isDefined(def.defaultValue))
+  }
+
+  static from (definitions, caseInsensitive) {
+    if (definitions instanceof this) return definitions
+    const result = super.from(arrayify(definitions), def => OptionDefinition.create(def));
+    result.validate(caseInsensitive);
+    return result
+  }
+}
+
+function halt (name, message) {
+  const err = new Error(message);
+  err.name = name;
+  throw err
+}
+
+function containsValidGroup (def) {
+  return arrayify(def.group).some(group => group)
+}
+
+function hasDuplicates (array) {
+  const items = {};
+  for (let i = 0; i < array.length; i++) {
+    const value = array[i];
+    if (items[value]) {
+      return true
+    } else {
+      if (t.isDefined(value)) items[value] = true;
+    }
+  }
+}
+
+/**
+ * @module argv-parser
+ */
+
+/**
+ * @alias module:argv-parser
+ */
+class ArgvParser {
+  /**
+   * @param {OptionDefinitions} - Definitions array
+   * @param {object} [options] - Options
+   * @param {string[]} [options.argv] - Overrides `process.argv`
+   * @param {boolean} [options.stopAtFirstUnknown] -
+   * @param {boolean} [options.caseInsensitive] - Arguments will be parsed in a case insensitive manner. Defaults to false.
+   */
+  constructor (definitions, options) {
+    this.options = Object.assign({}, options);
+    /**
+     * Option Definitions
+     */
+    this.definitions = Definitions.from(definitions, this.options.caseInsensitive);
+
+    /**
+     * Argv
+     */
+    this.argv = ArgvArray.from(this.options.argv);
+    if (this.argv.hasCombinedShortOptions()) {
+      findReplace(this.argv, re.combinedShort.test.bind(re.combinedShort), arg => {
+        arg = arg.slice(1);
+        return arg.split('').map(letter => ({ origArg: `-${arg}`, arg: '-' + letter }))
+      });
+    }
+  }
+
+  /**
+   * Yields one `{ event, name, value, arg, def }` argInfo object for each arg in `process.argv` (or `options.argv`).
+   */
+  * [Symbol.iterator] () {
+    const definitions = this.definitions;
+
+    let def;
+    let value;
+    let name;
+    let event;
+    let singularDefaultSet = false;
+    let unknownFound = false;
+    let origArg;
+
+    for (let arg of this.argv) {
+      if (t.isPlainObject(arg)) {
+        origArg = arg.origArg;
+        arg = arg.arg;
+      }
+
+      if (unknownFound && this.options.stopAtFirstUnknown) {
+        yield { event: 'unknown_value', arg, name: '_unknown', value: undefined };
+        continue
+      }
+
+      /* handle long or short option */
+      if (isOption(arg)) {
+        def = definitions.get(arg, this.options.caseInsensitive);
+        value = undefined;
+        if (def) {
+          value = def.isBoolean() ? true : null;
+          event = 'set';
+        } else {
+          event = 'unknown_option';
+        }
+
+      /* handle --option-value notation */
+      } else if (isOptionEqualsNotation(arg)) {
+        const matches = arg.match(re.optEquals);
+        def = definitions.get(matches[1], this.options.caseInsensitive);
+        if (def) {
+          if (def.isBoolean()) {
+            yield { event: 'unknown_value', arg, name: '_unknown', value, def };
+            event = 'set';
+            value = true;
+          } else {
+            event = 'set';
+            value = matches[2];
+          }
+        } else {
+          event = 'unknown_option';
+        }
+
+      /* handle value */
+      } else if (isValue(arg)) {
+        if (def) {
+          value = arg;
+          event = 'set';
+        } else {
+          /* get the defaultOption */
+          def = this.definitions.getDefault();
+          if (def && !singularDefaultSet) {
+            value = arg;
+            event = 'set';
+          } else {
+            event = 'unknown_value';
+            def = undefined;
+          }
+        }
+      }
+
+      name = def ? def.name : '_unknown';
+      const argInfo = { event, arg, name, value, def };
+      if (origArg) {
+        argInfo.subArg = arg;
+        argInfo.arg = origArg;
+      }
+      yield argInfo;
+
+      /* unknownFound logic */
+      if (name === '_unknown') unknownFound = true;
+
+      /* singularDefaultSet logic */
+      if (def && def.defaultOption && !def.isMultiple() && event === 'set') singularDefaultSet = true;
+
+      /* reset values once consumed and yielded */
+      if (def && def.isBoolean()) def = undefined;
+      /* reset the def if it's a singular which has been set */
+      if (def && !def.multiple && t.isDefined(value) && value !== null) {
+        def = undefined;
+      }
+      value = undefined;
+      event = undefined;
+      name = undefined;
+      origArg = undefined;
+    }
+  }
+}
+
+const _value = new WeakMap();
+
+/**
+ * Encapsulates behaviour (defined by an OptionDefinition) when setting values
+ */
+class Option {
+  constructor (definition) {
+    this.definition = new OptionDefinition(definition);
+    this.state = null; /* set or default */
+    this.resetToDefault();
+  }
+
+  get () {
+    return _value.get(this)
+  }
+
+  set (val) {
+    this._set(val, 'set');
+  }
+
+  _set (val, state) {
+    const def = this.definition;
+    if (def.isMultiple()) {
+      /* don't add null or undefined to a multiple */
+      if (val !== null && val !== undefined) {
+        const arr = this.get();
+        if (this.state === 'default') arr.length = 0;
+        arr.push(def.type(val));
+        this.state = state;
+      }
+    } else {
+      /* throw if already set on a singlar defaultOption */
+      if (!def.isMultiple() && this.state === 'set') {
+        const err = new Error(`Singular option already set [${this.definition.name}=${this.get()}]`);
+        err.name = 'ALREADY_SET';
+        err.value = val;
+        err.optionName = def.name;
+        throw err
+      } else if (val === null || val === undefined) {
+        _value.set(this, val);
+        // /* required to make 'partial: defaultOption with value equal to defaultValue 2' pass */
+        // if (!(def.defaultOption && !def.isMultiple())) {
+        //   this.state = state
+        // }
+      } else {
+        _value.set(this, def.type(val));
+        this.state = state;
+      }
+    }
+  }
+
+  resetToDefault () {
+    if (t.isDefined(this.definition.defaultValue)) {
+      if (this.definition.isMultiple()) {
+        _value.set(this, arrayify(this.definition.defaultValue).slice());
+      } else {
+        _value.set(this, this.definition.defaultValue);
+      }
+    } else {
+      if (this.definition.isMultiple()) {
+        _value.set(this, []);
+      } else {
+        _value.set(this, null);
+      }
+    }
+    this.state = 'default';
+  }
+
+  static create (definition) {
+    definition = new OptionDefinition(definition);
+    if (definition.isBoolean()) {
+      return FlagOption.create(definition)
+    } else {
+      return new this(definition)
+    }
+  }
+}
+
+class FlagOption extends Option {
+  set (val) {
+    super.set(true);
+  }
+
+  static create (def) {
+    return new this(def)
+  }
+}
+
+/**
+ * A map of { DefinitionNameString: Option }. By default, an Output has an `_unknown` property and any options with defaultValues.
+ */
+class Output extends Map {
+  constructor (definitions) {
+    super();
+    /**
+     * @type {OptionDefinitions}
+     */
+    this.definitions = Definitions.from(definitions);
+
+    /* by default, an Output has an `_unknown` property and any options with defaultValues */
+    this.set('_unknown', Option.create({ name: '_unknown', multiple: true }));
+    for (const def of this.definitions.whereDefaultValueSet()) {
+      this.set(def.name, Option.create(def));
+    }
+  }
+
+  toObject (options) {
+    options = options || {};
+    const output = {};
+    for (const item of this) {
+      const name = options.camelCase && item[0] !== '_unknown' ? camelCase(item[0]) : item[0];
+      const option = item[1];
+      if (name === '_unknown' && !option.get().length) continue
+      output[name] = option.get();
+    }
+
+    if (options.skipUnknown) delete output._unknown;
+    return output
+  }
+}
+
+class GroupedOutput extends Output {
+  toObject (options) {
+    const superOutputNoCamel = super.toObject({ skipUnknown: options.skipUnknown });
+    const superOutput = super.toObject(options);
+    const unknown = superOutput._unknown;
+    delete superOutput._unknown;
+    const grouped = {
+      _all: superOutput
+    };
+    if (unknown && unknown.length) grouped._unknown = unknown;
+
+    this.definitions.whereGrouped().forEach(def => {
+      const name = options.camelCase ? camelCase(def.name) : def.name;
+      const outputValue = superOutputNoCamel[def.name];
+      for (const groupName of arrayify(def.group)) {
+        grouped[groupName] = grouped[groupName] || {};
+        if (t.isDefined(outputValue)) {
+          grouped[groupName][name] = outputValue;
+        }
+      }
+    });
+
+    this.definitions.whereNotGrouped().forEach(def => {
+      const name = options.camelCase ? camelCase(def.name) : def.name;
+      const outputValue = superOutputNoCamel[def.name];
+      if (t.isDefined(outputValue)) {
+        if (!grouped._none) grouped._none = {};
+        grouped._none[name] = outputValue;
+      }
+    });
+    return grouped
+  }
+}
+
+/**
+ * @module command-line-args
+ */
+
+/**
+ * Returns an object containing all option values set on the command line. By default it parses the global  [`process.argv`](https://nodejs.org/api/process.html#process_process_argv) array.
+ *
+ * Parsing is strict by default - an exception is thrown if the user sets a singular option more than once or sets an unknown value or option (one without a valid [definition](https://github.com/75lb/command-line-args/blob/master/doc/option-definition.md)). To be more permissive, enabling [partial](https://github.com/75lb/command-line-args/wiki/Partial-mode-example) or [stopAtFirstUnknown](https://github.com/75lb/command-line-args/wiki/stopAtFirstUnknown) modes will return known options in the usual manner while collecting unknown arguments in a separate `_unknown` property.
+ *
+ * @param {Array<OptionDefinition>} - An array of [OptionDefinition](https://github.com/75lb/command-line-args/blob/master/doc/option-definition.md) objects
+ * @param {object} [options] - Options.
+ * @param {string[]} [options.argv] - An array of strings which, if present will be parsed instead  of `process.argv`.
+ * @param {boolean} [options.partial] - If `true`, an array of unknown arguments is returned in the `_unknown` property of the output.
+ * @param {boolean} [options.stopAtFirstUnknown] - If `true`, parsing will stop at the first unknown argument and the remaining arguments returned in `_unknown`. When set, `partial: true` is also implied.
+ * @param {boolean} [options.camelCase] - If `true`, options with hypenated names (e.g. `move-to`) will be returned in camel-case (e.g. `moveTo`).
+ * @param {boolean} [options.caseInsensitive] - If `true`, the case of each option name or alias parsed is insignificant. In other words, both `--Verbose` and `--verbose`, `-V` and `-v` would be equivalent. Defaults to false.
+ * @returns {object}
+ * @throws `UNKNOWN_OPTION` If `options.partial` is false and the user set an undefined option. The `err.optionName` property contains the arg that specified an unknown option, e.g. `--one`.
+ * @throws `UNKNOWN_VALUE` If `options.partial` is false and the user set a value unaccounted for by an option definition. The `err.value` property contains the unknown value, e.g. `5`.
+ * @throws `ALREADY_SET` If a user sets a singular, non-multiple option more than once. The `err.optionName` property contains the option name that has already been set, e.g. `one`.
+ * @throws `INVALID_DEFINITIONS`
+ *   - If an option definition is missing the required `name` property
+ *   - If an option definition has a `type` value that's not a function
+ *   - If an alias is numeric, a hyphen or a length other than 1
+ *   - If an option definition name was used more than once
+ *   - If an option definition alias was used more than once
+ *   - If more than one option definition has `defaultOption: true`
+ *   - If a `Boolean` option is also set as the `defaultOption`.
+ * @alias module:command-line-args
+ */
+function commandLineArgs (optionDefinitions, options) {
+  options = options || {};
+  if (options.stopAtFirstUnknown) options.partial = true;
+  optionDefinitions = Definitions.from(optionDefinitions, options.caseInsensitive);
+
+  const parser = new ArgvParser(optionDefinitions, {
+    argv: options.argv,
+    stopAtFirstUnknown: options.stopAtFirstUnknown,
+    caseInsensitive: options.caseInsensitive
+  });
+
+  const OutputClass = optionDefinitions.isGrouped() ? GroupedOutput : Output;
+  const output = new OutputClass(optionDefinitions);
+
+  /* Iterate the parser setting each known value to the output. Optionally, throw on unknowns. */
+  for (const argInfo of parser) {
+    const arg = argInfo.subArg || argInfo.arg;
+    if (!options.partial) {
+      if (argInfo.event === 'unknown_value') {
+        const err = new Error(`Unknown value: ${arg}`);
+        err.name = 'UNKNOWN_VALUE';
+        err.value = arg;
+        throw err
+      } else if (argInfo.event === 'unknown_option') {
+        const err = new Error(`Unknown option: ${arg}`);
+        err.name = 'UNKNOWN_OPTION';
+        err.optionName = arg;
+        throw err
+      }
+    }
+
+    let option;
+    if (output.has(argInfo.name)) {
+      option = output.get(argInfo.name);
+    } else {
+      option = Option.create(argInfo.def);
+      output.set(argInfo.name, option);
+    }
+
+    if (argInfo.name === '_unknown') {
+      option.set(arg);
+    } else {
+      option.set(argInfo.value);
+    }
+  }
+
+  return output.toObject({ skipUnknown: !options.partial, camelCase: options.camelCase })
+}
+
+module.exports = commandLineArgs;
diff --git a/igv_component/node_modules/command-line-args/dist/index.mjs b/igv_component/node_modules/command-line-args/dist/index.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..00683e4266e9dbd8c5c5898add9610ba20c4f8af
--- /dev/null
+++ b/igv_component/node_modules/command-line-args/dist/index.mjs
@@ -0,0 +1,1395 @@
+import camelCase from 'lodash.camelcase';
+
+/**
+ * Takes any input and guarantees an array back.
+ *
+ * - Converts array-like objects (e.g. `arguments`, `Set`) to a real array.
+ * - Converts `undefined` to an empty array.
+ * - Converts any another other, singular value (including `null`, objects and iterables other than `Set`) into an array containing that value.
+ * - Ignores input which is already an array.
+ *
+ * @module array-back
+ * @example
+ * > const arrayify = require('array-back')
+ *
+ * > arrayify(undefined)
+ * []
+ *
+ * > arrayify(null)
+ * [ null ]
+ *
+ * > arrayify(0)
+ * [ 0 ]
+ *
+ * > arrayify([ 1, 2 ])
+ * [ 1, 2 ]
+ *
+ * > arrayify(new Set([ 1, 2 ]))
+ * [ 1, 2 ]
+ *
+ * > function f(){ return arrayify(arguments); }
+ * > f(1,2,3)
+ * [ 1, 2, 3 ]
+ */
+
+function isObject (input) {
+  return typeof input === 'object' && input !== null
+}
+
+function isArrayLike (input) {
+  return isObject(input) && typeof input.length === 'number'
+}
+
+/**
+ * @param {*} - The input value to convert to an array
+ * @returns {Array}
+ * @alias module:array-back
+ */
+function arrayify (input) {
+  if (Array.isArray(input)) {
+    return input
+  }
+
+  if (input === undefined) {
+    return []
+  }
+
+  if (isArrayLike(input) || input instanceof Set) {
+    return Array.from(input)
+  }
+
+  return [ input ]
+}
+
+/**
+ * Takes any input and guarantees an array back.
+ *
+ * - converts array-like objects (e.g. `arguments`) to a real array
+ * - converts `undefined` to an empty array
+ * - converts any another other, singular value (including `null`) into an array containing that value
+ * - ignores input which is already an array
+ *
+ * @module array-back
+ * @example
+ * > const arrayify = require('array-back')
+ *
+ * > arrayify(undefined)
+ * []
+ *
+ * > arrayify(null)
+ * [ null ]
+ *
+ * > arrayify(0)
+ * [ 0 ]
+ *
+ * > arrayify([ 1, 2 ])
+ * [ 1, 2 ]
+ *
+ * > function f(){ return arrayify(arguments); }
+ * > f(1,2,3)
+ * [ 1, 2, 3 ]
+ */
+
+function isObject$1 (input) {
+  return typeof input === 'object' && input !== null
+}
+
+function isArrayLike$1 (input) {
+  return isObject$1(input) && typeof input.length === 'number'
+}
+
+/**
+ * @param {*} - the input value to convert to an array
+ * @returns {Array}
+ * @alias module:array-back
+ */
+function arrayify$1 (input) {
+  if (Array.isArray(input)) {
+    return input
+  } else {
+    if (input === undefined) {
+      return []
+    } else if (isArrayLike$1(input)) {
+      return Array.prototype.slice.call(input)
+    } else {
+      return [ input ]
+    }
+  }
+}
+
+/**
+ * Find and either replace or remove items in an array.
+ *
+ * @module find-replace
+ * @example
+ * > const findReplace = require('find-replace')
+ * > const numbers = [ 1, 2, 3]
+ *
+ * > findReplace(numbers, n => n === 2, 'two')
+ * [ 1, 'two', 3 ]
+ *
+ * > findReplace(numbers, n => n === 2, [ 'two', 'zwei' ])
+ * [ 1, [ 'two', 'zwei' ], 3 ]
+ *
+ * > findReplace(numbers, n => n === 2, 'two', 'zwei')
+ * [ 1, 'two', 'zwei', 3 ]
+ *
+ * > findReplace(numbers, n => n === 2) // no replacement, so remove
+ * [ 1, 3 ]
+ */
+
+/**
+ * @param {array} - The input array
+ * @param {testFn} - A predicate function which, if returning `true` causes the current item to be operated on.
+ * @param [replaceWith] {...any} - If specified, found values will be replaced with these values, else removed.
+ * @returns {array}
+ * @alias module:find-replace
+ */
+function findReplace (array, testFn) {
+  const found = [];
+  const replaceWiths = arrayify$1(arguments);
+  replaceWiths.splice(0, 2);
+
+  arrayify$1(array).forEach((value, index) => {
+    let expanded = [];
+    replaceWiths.forEach(replaceWith => {
+      if (typeof replaceWith === 'function') {
+        expanded = expanded.concat(replaceWith(value));
+      } else {
+        expanded.push(replaceWith);
+      }
+    });
+
+    if (testFn(value)) {
+      found.push({
+        index: index,
+        replaceWithValue: expanded
+      });
+    }
+  });
+
+  found.reverse().forEach(item => {
+    const spliceArgs = [ item.index, 1 ].concat(item.replaceWithValue);
+    array.splice.apply(array, spliceArgs);
+  });
+
+  return array
+}
+
+/**
+ * Some useful tools for working with `process.argv`.
+ *
+ * @module argv-tools
+ * @typicalName argvTools
+ * @example
+ * const argvTools = require('argv-tools')
+ */
+
+/**
+ * Regular expressions for matching option formats.
+ * @static
+ */
+const re = {
+  short: /^-([^\d-])$/,
+  long: /^--(\S+)/,
+  combinedShort: /^-[^\d-]{2,}$/,
+  optEquals: /^(--\S+?)=(.*)/
+};
+
+/**
+ * Array subclass encapsulating common operations on `process.argv`.
+ * @static
+ */
+class ArgvArray extends Array {
+  /**
+   * Clears the array has loads the supplied input.
+   * @param {string[]} argv - The argv list to load. Defaults to `process.argv`.
+   */
+  load (argv) {
+    this.clear();
+    if (argv && argv !== process.argv) {
+      argv = arrayify(argv);
+    } else {
+      /* if no argv supplied, assume we are parsing process.argv */
+      argv = process.argv.slice(0);
+      const deleteCount = process.execArgv.some(isExecArg) ? 1 : 2;
+      argv.splice(0, deleteCount);
+    }
+    argv.forEach(arg => this.push(String(arg)));
+  }
+
+  /**
+   * Clear the array.
+   */
+  clear () {
+    this.length = 0;
+  }
+
+  /**
+   * expand ``--option=value` style args.
+   */
+  expandOptionEqualsNotation () {
+    if (this.some(arg => re.optEquals.test(arg))) {
+      const expandedArgs = [];
+      this.forEach(arg => {
+        const matches = arg.match(re.optEquals);
+        if (matches) {
+          expandedArgs.push(matches[1], matches[2]);
+        } else {
+          expandedArgs.push(arg);
+        }
+      });
+      this.clear();
+      this.load(expandedArgs);
+    }
+  }
+
+  /**
+   * expand getopt-style combinedShort options.
+   */
+  expandGetoptNotation () {
+    if (this.hasCombinedShortOptions()) {
+      findReplace(this, re.combinedShort, expandCombinedShortArg);
+    }
+  }
+
+  /**
+   * Returns true if the array contains combined short options (e.g. `-ab`).
+   * @returns {boolean}
+   */
+  hasCombinedShortOptions () {
+    return this.some(arg => re.combinedShort.test(arg))
+  }
+
+  static from (argv) {
+    const result = new this();
+    result.load(argv);
+    return result
+  }
+}
+
+/**
+ * Expand a combined short option.
+ * @param {string} - the string to expand, e.g. `-ab`
+ * @returns {string[]}
+ * @static
+ */
+function expandCombinedShortArg (arg) {
+  /* remove initial hypen */
+  arg = arg.slice(1);
+  return arg.split('').map(letter => '-' + letter)
+}
+
+/**
+ * Returns true if the supplied arg matches `--option=value` notation.
+ * @param {string} - the arg to test, e.g. `--one=something`
+ * @returns {boolean}
+ * @static
+ */
+function isOptionEqualsNotation (arg) {
+  return re.optEquals.test(arg)
+}
+
+/**
+ * Returns true if the supplied arg is in either long (`--one`) or short (`-o`) format.
+ * @param {string} - the arg to test, e.g. `--one`
+ * @returns {boolean}
+ * @static
+ */
+function isOption (arg) {
+  return (re.short.test(arg) || re.long.test(arg)) && !re.optEquals.test(arg)
+}
+
+/**
+ * Returns true if the supplied arg is in long (`--one`) format.
+ * @param {string} - the arg to test, e.g. `--one`
+ * @returns {boolean}
+ * @static
+ */
+function isLongOption (arg) {
+  return re.long.test(arg) && !isOptionEqualsNotation(arg)
+}
+
+/**
+ * Returns the name from a long, short or `--options=value` arg.
+ * @param {string} - the arg to inspect, e.g. `--one`
+ * @returns {string}
+ * @static
+ */
+function getOptionName (arg) {
+  if (re.short.test(arg)) {
+    return arg.match(re.short)[1]
+  } else if (isLongOption(arg)) {
+    return arg.match(re.long)[1]
+  } else if (isOptionEqualsNotation(arg)) {
+    return arg.match(re.optEquals)[1].replace(/^--/, '')
+  } else {
+    return null
+  }
+}
+
+function isValue (arg) {
+  return !(isOption(arg) || re.combinedShort.test(arg) || re.optEquals.test(arg))
+}
+
+function isExecArg (arg) {
+  return ['--eval', '-e'].indexOf(arg) > -1 || arg.startsWith('--eval=')
+}
+
+/**
+ * For type-checking Javascript values.
+ * @module typical
+ * @typicalname t
+ * @example
+ * const t = require('typical')
+ */
+
+/**
+ * Returns true if input is a number
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isNumber(0)
+ * true
+ * > t.isNumber(1)
+ * true
+ * > t.isNumber(1.1)
+ * true
+ * > t.isNumber(0xff)
+ * true
+ * > t.isNumber(0644)
+ * true
+ * > t.isNumber(6.2e5)
+ * true
+ * > t.isNumber(NaN)
+ * false
+ * > t.isNumber(Infinity)
+ * false
+ */
+function isNumber (n) {
+  return !isNaN(parseFloat(n)) && isFinite(n)
+}
+
+/**
+ * A plain object is a simple object literal, it is not an instance of a class. Returns true if the input `typeof` is `object` and directly decends from `Object`.
+ *
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isPlainObject({ something: 'one' })
+ * true
+ * > t.isPlainObject(new Date())
+ * false
+ * > t.isPlainObject([ 0, 1 ])
+ * false
+ * > t.isPlainObject(/test/)
+ * false
+ * > t.isPlainObject(1)
+ * false
+ * > t.isPlainObject('one')
+ * false
+ * > t.isPlainObject(null)
+ * false
+ * > t.isPlainObject((function * () {})())
+ * false
+ * > t.isPlainObject(function * () {})
+ * false
+ */
+function isPlainObject (input) {
+  return input !== null && typeof input === 'object' && input.constructor === Object
+}
+
+/**
+ * An array-like value has all the properties of an array, but is not an array instance. Examples in the `arguments` object. Returns true if the input value is an object, not null and has a `length` property with a numeric value.
+ *
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * function sum(x, y){
+ *     console.log(t.isArrayLike(arguments))
+ *     // prints `true`
+ * }
+ */
+function isArrayLike$2 (input) {
+  return isObject$2(input) && typeof input.length === 'number'
+}
+
+/**
+ * returns true if the typeof input is `'object'`, but not null!
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isObject$2 (input) {
+  return typeof input === 'object' && input !== null
+}
+
+/**
+ * Returns true if the input value is defined
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isDefined (input) {
+  return typeof input !== 'undefined'
+}
+
+/**
+ * Returns true if the input value is a string
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isString (input) {
+  return typeof input === 'string'
+}
+
+/**
+ * Returns true if the input value is a boolean
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isBoolean (input) {
+  return typeof input === 'boolean'
+}
+
+/**
+ * Returns true if the input value is a function
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isFunction (input) {
+  return typeof input === 'function'
+}
+
+/**
+ * Returns true if the input value is an es2015 `class`.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isClass (input) {
+  if (isFunction(input)) {
+    return /^class /.test(Function.prototype.toString.call(input))
+  } else {
+    return false
+  }
+}
+
+/**
+ * Returns true if the input is a string, number, symbol, boolean, null or undefined value.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isPrimitive (input) {
+  if (input === null) return true
+  switch (typeof input) {
+    case 'string':
+    case 'number':
+    case 'symbol':
+    case 'undefined':
+    case 'boolean':
+      return true
+    default:
+      return false
+  }
+}
+
+/**
+ * Returns true if the input is a Promise.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isPromise (input) {
+  if (input) {
+    const isPromise = isDefined(Promise) && input instanceof Promise;
+    const isThenable = input.then && typeof input.then === 'function';
+    return !!(isPromise || isThenable)
+  } else {
+    return false
+  }
+}
+
+/**
+ * Returns true if the input is an iterable (`Map`, `Set`, `Array`, Generator etc.).
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isIterable('string')
+ * true
+ * > t.isIterable(new Map())
+ * true
+ * > t.isIterable([])
+ * true
+ * > t.isIterable((function * () {})())
+ * true
+ * > t.isIterable(Promise.resolve())
+ * false
+ * > t.isIterable(Promise)
+ * false
+ * > t.isIterable(true)
+ * false
+ * > t.isIterable({})
+ * false
+ * > t.isIterable(0)
+ * false
+ * > t.isIterable(1.1)
+ * false
+ * > t.isIterable(NaN)
+ * false
+ * > t.isIterable(Infinity)
+ * false
+ * > t.isIterable(function () {})
+ * false
+ * > t.isIterable(Date)
+ * false
+ * > t.isIterable()
+ * false
+ * > t.isIterable({ then: function () {} })
+ * false
+ */
+function isIterable (input) {
+  if (input === null || !isDefined(input)) {
+    return false
+  } else {
+    return (
+      typeof input[Symbol.iterator] === 'function' ||
+      typeof input[Symbol.asyncIterator] === 'function'
+    )
+  }
+}
+
+var t = {
+  isNumber,
+  isString,
+  isBoolean,
+  isPlainObject,
+  isArrayLike: isArrayLike$2,
+  isObject: isObject$2,
+  isDefined,
+  isFunction,
+  isClass,
+  isPrimitive,
+  isPromise,
+  isIterable
+};
+
+/**
+ * @module option-definition
+ */
+
+/**
+ * Describes a command-line option. Additionally, if generating a usage guide with [command-line-usage](https://github.com/75lb/command-line-usage) you could optionally add `description` and `typeLabel` properties to each definition.
+ *
+ * @alias module:option-definition
+ * @typicalname option
+ */
+class OptionDefinition {
+  constructor (definition) {
+    /**
+    * The only required definition property is `name`, so the simplest working example is
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'file' },
+    *   { name: 'depth' }
+    * ]
+    * ```
+    *
+    * Where a `type` property is not specified it will default to `String`.
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | -------------------- | ------------ |
+    * | 1   | `--file` | `{ file: null }` |
+    * | 2   | `--file lib.js` | `{ file: 'lib.js' }` |
+    * | 3   | `--depth 2` | `{ depth: '2' }` |
+    *
+    * Unicode option names and aliases are valid, for example:
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'один' },
+    *   { name: '两' },
+    *   { name: 'три', alias: 'т' }
+    * ]
+    * ```
+    * @type {string}
+    */
+    this.name = definition.name;
+
+    /**
+    * The `type` value is a setter function (you receive the output from this), enabling you to be specific about the type and value received.
+    *
+    * The most common values used are `String` (the default), `Number` and `Boolean` but you can use a custom function, for example:
+    *
+    * ```js
+    * const fs = require('fs')
+    *
+    * class FileDetails {
+    *   constructor (filename) {
+    *     this.filename = filename
+    *     this.exists = fs.existsSync(filename)
+    *   }
+    * }
+    *
+    * const cli = commandLineArgs([
+    *   { name: 'file', type: filename => new FileDetails(filename) },
+    *   { name: 'depth', type: Number }
+    * ])
+    * ```
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ----------------- | ------------ |
+    * | 1   | `--file asdf.txt` | `{ file: { filename: 'asdf.txt', exists: false } }` |
+    *
+    * The `--depth` option expects a `Number`. If no value was set, you will receive `null`.
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ----------------- | ------------ |
+    * | 2   | `--depth` | `{ depth: null }` |
+    * | 3   | `--depth 2` | `{ depth: 2 }` |
+    *
+    * @type {function}
+    * @default String
+    */
+    this.type = definition.type || String;
+
+    /**
+    * getopt-style short option names. Can be any single character (unicode included) except a digit or hyphen.
+    *
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'hot', alias: 'h', type: Boolean },
+    *   { name: 'discount', alias: 'd', type: Boolean },
+    *   { name: 'courses', alias: 'c' , type: Number }
+    * ]
+    * ```
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ------------ | ------------ |
+    * | 1   | `-hcd` | `{ hot: true, courses: null, discount: true }` |
+    * | 2   | `-hdc 3` | `{ hot: true, discount: true, courses: 3 }` |
+    *
+    * @type {string}
+    */
+    this.alias = definition.alias;
+
+    /**
+    * Set this flag if the option takes a list of values. You will receive an array of values, each passed through the `type` function (if specified).
+    *
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'files', type: String, multiple: true }
+    * ]
+    * ```
+    *
+    * Note, examples 1 and 3 below demonstrate "greedy" parsing which can be disabled by using `lazyMultiple`.
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ------------ | ------------ |
+    * | 1   | `--files one.js two.js` | `{ files: [ 'one.js', 'two.js' ] }` |
+    * | 2   | `--files one.js --files two.js` | `{ files: [ 'one.js', 'two.js' ] }` |
+    * | 3   | `--files *` | `{ files: [ 'one.js', 'two.js' ] }` |
+    *
+    * @type {boolean}
+    */
+    this.multiple = definition.multiple;
+
+    /**
+     * Identical to `multiple` but with greedy parsing disabled.
+     *
+     * ```js
+     * const optionDefinitions = [
+     *   { name: 'files', lazyMultiple: true },
+     *   { name: 'verbose', alias: 'v', type: Boolean, lazyMultiple: true }
+     * ]
+     * ```
+     *
+     * | #   | argv input | commandLineArgs() output |
+     * | --- | ------------ | ------------ |
+     * | 1   | `--files one.js --files two.js` | `{ files: [ 'one.js', 'two.js' ] }` |
+     * | 2   | `-vvv` | `{ verbose: [ true, true, true ] }` |
+     *
+     * @type {boolean}
+     */
+    this.lazyMultiple = definition.lazyMultiple;
+
+    /**
+    * Any values unaccounted for by an option definition will be set on the `defaultOption`. This flag is typically set on the most commonly-used option to make for more concise usage (i.e. `$ example *.js` instead of `$ example --files *.js`).
+    *
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'files', multiple: true, defaultOption: true }
+    * ]
+    * ```
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ------------ | ------------ |
+    * | 1   | `--files one.js two.js` | `{ files: [ 'one.js', 'two.js' ] }` |
+    * | 2   | `one.js two.js` | `{ files: [ 'one.js', 'two.js' ] }` |
+    * | 3   | `*` | `{ files: [ 'one.js', 'two.js' ] }` |
+    *
+    * @type {boolean}
+    */
+    this.defaultOption = definition.defaultOption;
+
+    /**
+    * An initial value for the option.
+    *
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'files', multiple: true, defaultValue: [ 'one.js' ] },
+    *   { name: 'max', type: Number, defaultValue: 3 }
+    * ]
+    * ```
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ------------ | ------------ |
+    * | 1   |  | `{ files: [ 'one.js' ], max: 3 }` |
+    * | 2   | `--files two.js` | `{ files: [ 'two.js' ], max: 3 }` |
+    * | 3   | `--max 4` | `{ files: [ 'one.js' ], max: 4 }` |
+    *
+    * @type {*}
+    */
+    this.defaultValue = definition.defaultValue;
+
+    /**
+    * When your app has a large amount of options it makes sense to organise them in groups.
+    *
+    * There are two automatic groups: `_all` (contains all options) and `_none` (contains options without a `group` specified in their definition).
+    *
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'verbose', group: 'standard' },
+    *   { name: 'help', group: [ 'standard', 'main' ] },
+    *   { name: 'compress', group: [ 'server', 'main' ] },
+    *   { name: 'static', group: 'server' },
+    *   { name: 'debug' }
+    * ]
+    * ```
+    *
+    *<table>
+    *  <tr>
+    *    <th>#</th><th>Command Line</th><th>commandLineArgs() output</th>
+    *  </tr>
+    *  <tr>
+    *    <td>1</td><td><code>--verbose</code></td><td><pre><code>
+    *{
+    *  _all: { verbose: true },
+    *  standard: { verbose: true }
+    *}
+    *</code></pre></td>
+    *  </tr>
+    *  <tr>
+    *    <td>2</td><td><code>--debug</code></td><td><pre><code>
+    *{
+    *  _all: { debug: true },
+    *  _none: { debug: true }
+    *}
+    *</code></pre></td>
+    *  </tr>
+    *  <tr>
+    *    <td>3</td><td><code>--verbose --debug --compress</code></td><td><pre><code>
+    *{
+    *  _all: {
+    *    verbose: true,
+    *    debug: true,
+    *    compress: true
+    *  },
+    *  standard: { verbose: true },
+    *  server: { compress: true },
+    *  main: { compress: true },
+    *  _none: { debug: true }
+    *}
+    *</code></pre></td>
+    *  </tr>
+    *  <tr>
+    *    <td>4</td><td><code>--compress</code></td><td><pre><code>
+    *{
+    *  _all: { compress: true },
+    *  server: { compress: true },
+    *  main: { compress: true }
+    *}
+    *</code></pre></td>
+    *  </tr>
+    *</table>
+    *
+    * @type {string|string[]}
+    */
+    this.group = definition.group;
+
+    /* pick up any remaining properties */
+    for (const prop in definition) {
+      if (!this[prop]) this[prop] = definition[prop];
+    }
+  }
+
+  isBoolean () {
+    return this.type === Boolean || (t.isFunction(this.type) && this.type.name === 'Boolean')
+  }
+
+  isMultiple () {
+    return this.multiple || this.lazyMultiple
+  }
+
+  static create (def) {
+    const result = new this(def);
+    return result
+  }
+}
+
+/**
+ * @module option-definitions
+ */
+
+/**
+ * @alias module:option-definitions
+ */
+class Definitions extends Array {
+  /**
+   * validate option definitions
+   * @param {boolean} [caseInsensitive=false] - whether arguments will be parsed in a case insensitive manner
+   * @returns {string}
+   */
+  validate (caseInsensitive) {
+    const someHaveNoName = this.some(def => !def.name);
+    if (someHaveNoName) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Invalid option definitions: the `name` property is required on each definition'
+      );
+    }
+
+    const someDontHaveFunctionType = this.some(def => def.type && typeof def.type !== 'function');
+    if (someDontHaveFunctionType) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Invalid option definitions: the `type` property must be a setter fuction (default: `Boolean`)'
+      );
+    }
+
+    let invalidOption;
+
+    const numericAlias = this.some(def => {
+      invalidOption = def;
+      return t.isDefined(def.alias) && t.isNumber(def.alias)
+    });
+    if (numericAlias) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Invalid option definition: to avoid ambiguity an alias cannot be numeric [--' + invalidOption.name + ' alias is -' + invalidOption.alias + ']'
+      );
+    }
+
+    const multiCharacterAlias = this.some(def => {
+      invalidOption = def;
+      return t.isDefined(def.alias) && def.alias.length !== 1
+    });
+    if (multiCharacterAlias) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Invalid option definition: an alias must be a single character'
+      );
+    }
+
+    const hypenAlias = this.some(def => {
+      invalidOption = def;
+      return def.alias === '-'
+    });
+    if (hypenAlias) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Invalid option definition: an alias cannot be "-"'
+      );
+    }
+
+    const duplicateName = hasDuplicates(this.map(def => caseInsensitive ? def.name.toLowerCase() : def.name));
+    if (duplicateName) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Two or more option definitions have the same name'
+      );
+    }
+
+    const duplicateAlias = hasDuplicates(this.map(def => caseInsensitive && t.isDefined(def.alias) ? def.alias.toLowerCase() : def.alias));
+    if (duplicateAlias) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Two or more option definitions have the same alias'
+      );
+    }
+
+    const duplicateDefaultOption = this.filter(def => def.defaultOption === true).length > 1;
+    if (duplicateDefaultOption) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Only one option definition can be the defaultOption'
+      );
+    }
+
+    const defaultBoolean = this.some(def => {
+      invalidOption = def;
+      return def.isBoolean() && def.defaultOption
+    });
+    if (defaultBoolean) {
+      halt(
+        'INVALID_DEFINITIONS',
+        `A boolean option ["${invalidOption.name}"] can not also be the defaultOption.`
+      );
+    }
+  }
+
+  /**
+   * Get definition by option arg (e.g. `--one` or `-o`)
+   * @param {string} [arg] the argument name to get the definition for
+   * @param {boolean} [caseInsensitive] whether to use case insensitive comparisons when finding the appropriate definition
+   * @returns {Definition}
+   */
+  get (arg, caseInsensitive) {
+    if (isOption(arg)) {
+      if (re.short.test(arg)) {
+        const shortOptionName = getOptionName(arg);
+        if (caseInsensitive) {
+          const lowercaseShortOptionName = shortOptionName.toLowerCase();
+          return this.find(def => t.isDefined(def.alias) && def.alias.toLowerCase() === lowercaseShortOptionName)
+        } else {
+          return this.find(def => def.alias === shortOptionName)
+        }
+      } else {
+        const optionName = getOptionName(arg);
+        if (caseInsensitive) {
+          const lowercaseOptionName = optionName.toLowerCase();
+          return this.find(def => def.name.toLowerCase() === lowercaseOptionName)
+        } else {
+          return this.find(def => def.name === optionName)
+        }
+      }
+    } else {
+      return this.find(def => def.name === arg)
+    }
+  }
+
+  getDefault () {
+    return this.find(def => def.defaultOption === true)
+  }
+
+  isGrouped () {
+    return this.some(def => def.group)
+  }
+
+  whereGrouped () {
+    return this.filter(containsValidGroup)
+  }
+
+  whereNotGrouped () {
+    return this.filter(def => !containsValidGroup(def))
+  }
+
+  whereDefaultValueSet () {
+    return this.filter(def => t.isDefined(def.defaultValue))
+  }
+
+  static from (definitions, caseInsensitive) {
+    if (definitions instanceof this) return definitions
+    const result = super.from(arrayify(definitions), def => OptionDefinition.create(def));
+    result.validate(caseInsensitive);
+    return result
+  }
+}
+
+function halt (name, message) {
+  const err = new Error(message);
+  err.name = name;
+  throw err
+}
+
+function containsValidGroup (def) {
+  return arrayify(def.group).some(group => group)
+}
+
+function hasDuplicates (array) {
+  const items = {};
+  for (let i = 0; i < array.length; i++) {
+    const value = array[i];
+    if (items[value]) {
+      return true
+    } else {
+      if (t.isDefined(value)) items[value] = true;
+    }
+  }
+}
+
+/**
+ * @module argv-parser
+ */
+
+/**
+ * @alias module:argv-parser
+ */
+class ArgvParser {
+  /**
+   * @param {OptionDefinitions} - Definitions array
+   * @param {object} [options] - Options
+   * @param {string[]} [options.argv] - Overrides `process.argv`
+   * @param {boolean} [options.stopAtFirstUnknown] -
+   * @param {boolean} [options.caseInsensitive] - Arguments will be parsed in a case insensitive manner. Defaults to false.
+   */
+  constructor (definitions, options) {
+    this.options = Object.assign({}, options);
+    /**
+     * Option Definitions
+     */
+    this.definitions = Definitions.from(definitions, this.options.caseInsensitive);
+
+    /**
+     * Argv
+     */
+    this.argv = ArgvArray.from(this.options.argv);
+    if (this.argv.hasCombinedShortOptions()) {
+      findReplace(this.argv, re.combinedShort.test.bind(re.combinedShort), arg => {
+        arg = arg.slice(1);
+        return arg.split('').map(letter => ({ origArg: `-${arg}`, arg: '-' + letter }))
+      });
+    }
+  }
+
+  /**
+   * Yields one `{ event, name, value, arg, def }` argInfo object for each arg in `process.argv` (or `options.argv`).
+   */
+  * [Symbol.iterator] () {
+    const definitions = this.definitions;
+
+    let def;
+    let value;
+    let name;
+    let event;
+    let singularDefaultSet = false;
+    let unknownFound = false;
+    let origArg;
+
+    for (let arg of this.argv) {
+      if (t.isPlainObject(arg)) {
+        origArg = arg.origArg;
+        arg = arg.arg;
+      }
+
+      if (unknownFound && this.options.stopAtFirstUnknown) {
+        yield { event: 'unknown_value', arg, name: '_unknown', value: undefined };
+        continue
+      }
+
+      /* handle long or short option */
+      if (isOption(arg)) {
+        def = definitions.get(arg, this.options.caseInsensitive);
+        value = undefined;
+        if (def) {
+          value = def.isBoolean() ? true : null;
+          event = 'set';
+        } else {
+          event = 'unknown_option';
+        }
+
+      /* handle --option-value notation */
+      } else if (isOptionEqualsNotation(arg)) {
+        const matches = arg.match(re.optEquals);
+        def = definitions.get(matches[1], this.options.caseInsensitive);
+        if (def) {
+          if (def.isBoolean()) {
+            yield { event: 'unknown_value', arg, name: '_unknown', value, def };
+            event = 'set';
+            value = true;
+          } else {
+            event = 'set';
+            value = matches[2];
+          }
+        } else {
+          event = 'unknown_option';
+        }
+
+      /* handle value */
+      } else if (isValue(arg)) {
+        if (def) {
+          value = arg;
+          event = 'set';
+        } else {
+          /* get the defaultOption */
+          def = this.definitions.getDefault();
+          if (def && !singularDefaultSet) {
+            value = arg;
+            event = 'set';
+          } else {
+            event = 'unknown_value';
+            def = undefined;
+          }
+        }
+      }
+
+      name = def ? def.name : '_unknown';
+      const argInfo = { event, arg, name, value, def };
+      if (origArg) {
+        argInfo.subArg = arg;
+        argInfo.arg = origArg;
+      }
+      yield argInfo;
+
+      /* unknownFound logic */
+      if (name === '_unknown') unknownFound = true;
+
+      /* singularDefaultSet logic */
+      if (def && def.defaultOption && !def.isMultiple() && event === 'set') singularDefaultSet = true;
+
+      /* reset values once consumed and yielded */
+      if (def && def.isBoolean()) def = undefined;
+      /* reset the def if it's a singular which has been set */
+      if (def && !def.multiple && t.isDefined(value) && value !== null) {
+        def = undefined;
+      }
+      value = undefined;
+      event = undefined;
+      name = undefined;
+      origArg = undefined;
+    }
+  }
+}
+
+const _value = new WeakMap();
+
+/**
+ * Encapsulates behaviour (defined by an OptionDefinition) when setting values
+ */
+class Option {
+  constructor (definition) {
+    this.definition = new OptionDefinition(definition);
+    this.state = null; /* set or default */
+    this.resetToDefault();
+  }
+
+  get () {
+    return _value.get(this)
+  }
+
+  set (val) {
+    this._set(val, 'set');
+  }
+
+  _set (val, state) {
+    const def = this.definition;
+    if (def.isMultiple()) {
+      /* don't add null or undefined to a multiple */
+      if (val !== null && val !== undefined) {
+        const arr = this.get();
+        if (this.state === 'default') arr.length = 0;
+        arr.push(def.type(val));
+        this.state = state;
+      }
+    } else {
+      /* throw if already set on a singlar defaultOption */
+      if (!def.isMultiple() && this.state === 'set') {
+        const err = new Error(`Singular option already set [${this.definition.name}=${this.get()}]`);
+        err.name = 'ALREADY_SET';
+        err.value = val;
+        err.optionName = def.name;
+        throw err
+      } else if (val === null || val === undefined) {
+        _value.set(this, val);
+        // /* required to make 'partial: defaultOption with value equal to defaultValue 2' pass */
+        // if (!(def.defaultOption && !def.isMultiple())) {
+        //   this.state = state
+        // }
+      } else {
+        _value.set(this, def.type(val));
+        this.state = state;
+      }
+    }
+  }
+
+  resetToDefault () {
+    if (t.isDefined(this.definition.defaultValue)) {
+      if (this.definition.isMultiple()) {
+        _value.set(this, arrayify(this.definition.defaultValue).slice());
+      } else {
+        _value.set(this, this.definition.defaultValue);
+      }
+    } else {
+      if (this.definition.isMultiple()) {
+        _value.set(this, []);
+      } else {
+        _value.set(this, null);
+      }
+    }
+    this.state = 'default';
+  }
+
+  static create (definition) {
+    definition = new OptionDefinition(definition);
+    if (definition.isBoolean()) {
+      return FlagOption.create(definition)
+    } else {
+      return new this(definition)
+    }
+  }
+}
+
+class FlagOption extends Option {
+  set (val) {
+    super.set(true);
+  }
+
+  static create (def) {
+    return new this(def)
+  }
+}
+
+/**
+ * A map of { DefinitionNameString: Option }. By default, an Output has an `_unknown` property and any options with defaultValues.
+ */
+class Output extends Map {
+  constructor (definitions) {
+    super();
+    /**
+     * @type {OptionDefinitions}
+     */
+    this.definitions = Definitions.from(definitions);
+
+    /* by default, an Output has an `_unknown` property and any options with defaultValues */
+    this.set('_unknown', Option.create({ name: '_unknown', multiple: true }));
+    for (const def of this.definitions.whereDefaultValueSet()) {
+      this.set(def.name, Option.create(def));
+    }
+  }
+
+  toObject (options) {
+    options = options || {};
+    const output = {};
+    for (const item of this) {
+      const name = options.camelCase && item[0] !== '_unknown' ? camelCase(item[0]) : item[0];
+      const option = item[1];
+      if (name === '_unknown' && !option.get().length) continue
+      output[name] = option.get();
+    }
+
+    if (options.skipUnknown) delete output._unknown;
+    return output
+  }
+}
+
+class GroupedOutput extends Output {
+  toObject (options) {
+    const superOutputNoCamel = super.toObject({ skipUnknown: options.skipUnknown });
+    const superOutput = super.toObject(options);
+    const unknown = superOutput._unknown;
+    delete superOutput._unknown;
+    const grouped = {
+      _all: superOutput
+    };
+    if (unknown && unknown.length) grouped._unknown = unknown;
+
+    this.definitions.whereGrouped().forEach(def => {
+      const name = options.camelCase ? camelCase(def.name) : def.name;
+      const outputValue = superOutputNoCamel[def.name];
+      for (const groupName of arrayify(def.group)) {
+        grouped[groupName] = grouped[groupName] || {};
+        if (t.isDefined(outputValue)) {
+          grouped[groupName][name] = outputValue;
+        }
+      }
+    });
+
+    this.definitions.whereNotGrouped().forEach(def => {
+      const name = options.camelCase ? camelCase(def.name) : def.name;
+      const outputValue = superOutputNoCamel[def.name];
+      if (t.isDefined(outputValue)) {
+        if (!grouped._none) grouped._none = {};
+        grouped._none[name] = outputValue;
+      }
+    });
+    return grouped
+  }
+}
+
+/**
+ * @module command-line-args
+ */
+
+/**
+ * Returns an object containing all option values set on the command line. By default it parses the global  [`process.argv`](https://nodejs.org/api/process.html#process_process_argv) array.
+ *
+ * Parsing is strict by default - an exception is thrown if the user sets a singular option more than once or sets an unknown value or option (one without a valid [definition](https://github.com/75lb/command-line-args/blob/master/doc/option-definition.md)). To be more permissive, enabling [partial](https://github.com/75lb/command-line-args/wiki/Partial-mode-example) or [stopAtFirstUnknown](https://github.com/75lb/command-line-args/wiki/stopAtFirstUnknown) modes will return known options in the usual manner while collecting unknown arguments in a separate `_unknown` property.
+ *
+ * @param {Array<OptionDefinition>} - An array of [OptionDefinition](https://github.com/75lb/command-line-args/blob/master/doc/option-definition.md) objects
+ * @param {object} [options] - Options.
+ * @param {string[]} [options.argv] - An array of strings which, if present will be parsed instead  of `process.argv`.
+ * @param {boolean} [options.partial] - If `true`, an array of unknown arguments is returned in the `_unknown` property of the output.
+ * @param {boolean} [options.stopAtFirstUnknown] - If `true`, parsing will stop at the first unknown argument and the remaining arguments returned in `_unknown`. When set, `partial: true` is also implied.
+ * @param {boolean} [options.camelCase] - If `true`, options with hypenated names (e.g. `move-to`) will be returned in camel-case (e.g. `moveTo`).
+ * @param {boolean} [options.caseInsensitive] - If `true`, the case of each option name or alias parsed is insignificant. In other words, both `--Verbose` and `--verbose`, `-V` and `-v` would be equivalent. Defaults to false.
+ * @returns {object}
+ * @throws `UNKNOWN_OPTION` If `options.partial` is false and the user set an undefined option. The `err.optionName` property contains the arg that specified an unknown option, e.g. `--one`.
+ * @throws `UNKNOWN_VALUE` If `options.partial` is false and the user set a value unaccounted for by an option definition. The `err.value` property contains the unknown value, e.g. `5`.
+ * @throws `ALREADY_SET` If a user sets a singular, non-multiple option more than once. The `err.optionName` property contains the option name that has already been set, e.g. `one`.
+ * @throws `INVALID_DEFINITIONS`
+ *   - If an option definition is missing the required `name` property
+ *   - If an option definition has a `type` value that's not a function
+ *   - If an alias is numeric, a hyphen or a length other than 1
+ *   - If an option definition name was used more than once
+ *   - If an option definition alias was used more than once
+ *   - If more than one option definition has `defaultOption: true`
+ *   - If a `Boolean` option is also set as the `defaultOption`.
+ * @alias module:command-line-args
+ */
+function commandLineArgs (optionDefinitions, options) {
+  options = options || {};
+  if (options.stopAtFirstUnknown) options.partial = true;
+  optionDefinitions = Definitions.from(optionDefinitions, options.caseInsensitive);
+
+  const parser = new ArgvParser(optionDefinitions, {
+    argv: options.argv,
+    stopAtFirstUnknown: options.stopAtFirstUnknown,
+    caseInsensitive: options.caseInsensitive
+  });
+
+  const OutputClass = optionDefinitions.isGrouped() ? GroupedOutput : Output;
+  const output = new OutputClass(optionDefinitions);
+
+  /* Iterate the parser setting each known value to the output. Optionally, throw on unknowns. */
+  for (const argInfo of parser) {
+    const arg = argInfo.subArg || argInfo.arg;
+    if (!options.partial) {
+      if (argInfo.event === 'unknown_value') {
+        const err = new Error(`Unknown value: ${arg}`);
+        err.name = 'UNKNOWN_VALUE';
+        err.value = arg;
+        throw err
+      } else if (argInfo.event === 'unknown_option') {
+        const err = new Error(`Unknown option: ${arg}`);
+        err.name = 'UNKNOWN_OPTION';
+        err.optionName = arg;
+        throw err
+      }
+    }
+
+    let option;
+    if (output.has(argInfo.name)) {
+      option = output.get(argInfo.name);
+    } else {
+      option = Option.create(argInfo.def);
+      output.set(argInfo.name, option);
+    }
+
+    if (argInfo.name === '_unknown') {
+      option.set(arg);
+    } else {
+      option.set(argInfo.value);
+    }
+  }
+
+  return output.toObject({ skipUnknown: !options.partial, camelCase: options.camelCase })
+}
+
+export default commandLineArgs;
diff --git a/igv_component/node_modules/command-line-args/index.mjs b/igv_component/node_modules/command-line-args/index.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..4ce4dea860921723a4a440e35787ac91f25e3e71
--- /dev/null
+++ b/igv_component/node_modules/command-line-args/index.mjs
@@ -0,0 +1,86 @@
+import Definitions from './lib/option-definitions.mjs'
+import ArgvParser from './lib/argv-parser.mjs'
+import Option from './lib/option.mjs'
+import OutputGrouped from './lib/output-grouped.mjs'
+import Output from './lib/output.mjs'
+
+/**
+ * @module command-line-args
+ */
+
+/**
+ * Returns an object containing all option values set on the command line. By default it parses the global  [`process.argv`](https://nodejs.org/api/process.html#process_process_argv) array.
+ *
+ * Parsing is strict by default - an exception is thrown if the user sets a singular option more than once or sets an unknown value or option (one without a valid [definition](https://github.com/75lb/command-line-args/blob/master/doc/option-definition.md)). To be more permissive, enabling [partial](https://github.com/75lb/command-line-args/wiki/Partial-mode-example) or [stopAtFirstUnknown](https://github.com/75lb/command-line-args/wiki/stopAtFirstUnknown) modes will return known options in the usual manner while collecting unknown arguments in a separate `_unknown` property.
+ *
+ * @param {Array<OptionDefinition>} - An array of [OptionDefinition](https://github.com/75lb/command-line-args/blob/master/doc/option-definition.md) objects
+ * @param {object} [options] - Options.
+ * @param {string[]} [options.argv] - An array of strings which, if present will be parsed instead  of `process.argv`.
+ * @param {boolean} [options.partial] - If `true`, an array of unknown arguments is returned in the `_unknown` property of the output.
+ * @param {boolean} [options.stopAtFirstUnknown] - If `true`, parsing will stop at the first unknown argument and the remaining arguments returned in `_unknown`. When set, `partial: true` is also implied.
+ * @param {boolean} [options.camelCase] - If `true`, options with hypenated names (e.g. `move-to`) will be returned in camel-case (e.g. `moveTo`).
+ * @param {boolean} [options.caseInsensitive] - If `true`, the case of each option name or alias parsed is insignificant. In other words, both `--Verbose` and `--verbose`, `-V` and `-v` would be equivalent. Defaults to false.
+ * @returns {object}
+ * @throws `UNKNOWN_OPTION` If `options.partial` is false and the user set an undefined option. The `err.optionName` property contains the arg that specified an unknown option, e.g. `--one`.
+ * @throws `UNKNOWN_VALUE` If `options.partial` is false and the user set a value unaccounted for by an option definition. The `err.value` property contains the unknown value, e.g. `5`.
+ * @throws `ALREADY_SET` If a user sets a singular, non-multiple option more than once. The `err.optionName` property contains the option name that has already been set, e.g. `one`.
+ * @throws `INVALID_DEFINITIONS`
+ *   - If an option definition is missing the required `name` property
+ *   - If an option definition has a `type` value that's not a function
+ *   - If an alias is numeric, a hyphen or a length other than 1
+ *   - If an option definition name was used more than once
+ *   - If an option definition alias was used more than once
+ *   - If more than one option definition has `defaultOption: true`
+ *   - If a `Boolean` option is also set as the `defaultOption`.
+ * @alias module:command-line-args
+ */
+function commandLineArgs (optionDefinitions, options) {
+  options = options || {}
+  if (options.stopAtFirstUnknown) options.partial = true
+  optionDefinitions = Definitions.from(optionDefinitions, options.caseInsensitive)
+
+  const parser = new ArgvParser(optionDefinitions, {
+    argv: options.argv,
+    stopAtFirstUnknown: options.stopAtFirstUnknown,
+    caseInsensitive: options.caseInsensitive
+  })
+
+  const OutputClass = optionDefinitions.isGrouped() ? OutputGrouped : Output
+  const output = new OutputClass(optionDefinitions)
+
+  /* Iterate the parser setting each known value to the output. Optionally, throw on unknowns. */
+  for (const argInfo of parser) {
+    const arg = argInfo.subArg || argInfo.arg
+    if (!options.partial) {
+      if (argInfo.event === 'unknown_value') {
+        const err = new Error(`Unknown value: ${arg}`)
+        err.name = 'UNKNOWN_VALUE'
+        err.value = arg
+        throw err
+      } else if (argInfo.event === 'unknown_option') {
+        const err = new Error(`Unknown option: ${arg}`)
+        err.name = 'UNKNOWN_OPTION'
+        err.optionName = arg
+        throw err
+      }
+    }
+
+    let option
+    if (output.has(argInfo.name)) {
+      option = output.get(argInfo.name)
+    } else {
+      option = Option.create(argInfo.def)
+      output.set(argInfo.name, option)
+    }
+
+    if (argInfo.name === '_unknown') {
+      option.set(arg)
+    } else {
+      option.set(argInfo.value)
+    }
+  }
+
+  return output.toObject({ skipUnknown: !options.partial, camelCase: options.camelCase })
+}
+
+export default commandLineArgs
diff --git a/igv_component/node_modules/command-line-args/lib/argv-parser.mjs b/igv_component/node_modules/command-line-args/lib/argv-parser.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..a2335d3fb65e94e569dea9205e56bec258fc5ee7
--- /dev/null
+++ b/igv_component/node_modules/command-line-args/lib/argv-parser.mjs
@@ -0,0 +1,139 @@
+import * as argvTools from './argv-tools.mjs'
+import Definitions from './option-definitions.mjs'
+import findReplace from '../node_modules/find-replace/dist/index.mjs'
+import t from '../node_modules/typical/index.mjs'
+
+/**
+ * @module argv-parser
+ */
+
+/**
+ * @alias module:argv-parser
+ */
+class ArgvParser {
+  /**
+   * @param {OptionDefinitions} - Definitions array
+   * @param {object} [options] - Options
+   * @param {string[]} [options.argv] - Overrides `process.argv`
+   * @param {boolean} [options.stopAtFirstUnknown] -
+   * @param {boolean} [options.caseInsensitive] - Arguments will be parsed in a case insensitive manner. Defaults to false.
+   */
+  constructor (definitions, options) {
+    this.options = Object.assign({}, options)
+    /**
+     * Option Definitions
+     */
+    this.definitions = Definitions.from(definitions, this.options.caseInsensitive)
+
+    /**
+     * Argv
+     */
+    this.argv = argvTools.ArgvArray.from(this.options.argv)
+    if (this.argv.hasCombinedShortOptions()) {
+      findReplace(this.argv, argvTools.re.combinedShort.test.bind(argvTools.re.combinedShort), arg => {
+        arg = arg.slice(1)
+        return arg.split('').map(letter => ({ origArg: `-${arg}`, arg: '-' + letter }))
+      })
+    }
+  }
+
+  /**
+   * Yields one `{ event, name, value, arg, def }` argInfo object for each arg in `process.argv` (or `options.argv`).
+   */
+  * [Symbol.iterator] () {
+    const definitions = this.definitions
+
+    let def
+    let value
+    let name
+    let event
+    let singularDefaultSet = false
+    let unknownFound = false
+    let origArg
+
+    for (let arg of this.argv) {
+      if (t.isPlainObject(arg)) {
+        origArg = arg.origArg
+        arg = arg.arg
+      }
+
+      if (unknownFound && this.options.stopAtFirstUnknown) {
+        yield { event: 'unknown_value', arg, name: '_unknown', value: undefined }
+        continue
+      }
+
+      /* handle long or short option */
+      if (argvTools.isOption(arg)) {
+        def = definitions.get(arg, this.options.caseInsensitive)
+        value = undefined
+        if (def) {
+          value = def.isBoolean() ? true : null
+          event = 'set'
+        } else {
+          event = 'unknown_option'
+        }
+
+      /* handle --option-value notation */
+      } else if (argvTools.isOptionEqualsNotation(arg)) {
+        const matches = arg.match(argvTools.re.optEquals)
+        def = definitions.get(matches[1], this.options.caseInsensitive)
+        if (def) {
+          if (def.isBoolean()) {
+            yield { event: 'unknown_value', arg, name: '_unknown', value, def }
+            event = 'set'
+            value = true
+          } else {
+            event = 'set'
+            value = matches[2]
+          }
+        } else {
+          event = 'unknown_option'
+        }
+
+      /* handle value */
+      } else if (argvTools.isValue(arg)) {
+        if (def) {
+          value = arg
+          event = 'set'
+        } else {
+          /* get the defaultOption */
+          def = this.definitions.getDefault()
+          if (def && !singularDefaultSet) {
+            value = arg
+            event = 'set'
+          } else {
+            event = 'unknown_value'
+            def = undefined
+          }
+        }
+      }
+
+      name = def ? def.name : '_unknown'
+      const argInfo = { event, arg, name, value, def }
+      if (origArg) {
+        argInfo.subArg = arg
+        argInfo.arg = origArg
+      }
+      yield argInfo
+
+      /* unknownFound logic */
+      if (name === '_unknown') unknownFound = true
+
+      /* singularDefaultSet logic */
+      if (def && def.defaultOption && !def.isMultiple() && event === 'set') singularDefaultSet = true
+
+      /* reset values once consumed and yielded */
+      if (def && def.isBoolean()) def = undefined
+      /* reset the def if it's a singular which has been set */
+      if (def && !def.multiple && t.isDefined(value) && value !== null) {
+        def = undefined
+      }
+      value = undefined
+      event = undefined
+      name = undefined
+      origArg = undefined
+    }
+  }
+}
+
+export default ArgvParser
diff --git a/igv_component/node_modules/command-line-args/lib/argv-tools.mjs b/igv_component/node_modules/command-line-args/lib/argv-tools.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..7a0e4262410d7fdefafd0b9d6792de3630d7f8b3
--- /dev/null
+++ b/igv_component/node_modules/command-line-args/lib/argv-tools.mjs
@@ -0,0 +1,173 @@
+import arrayify from '../node_modules/array-back/index.mjs'
+import findReplace from '../node_modules/find-replace/dist/index.mjs'
+
+/**
+ * Some useful tools for working with `process.argv`.
+ *
+ * @module argv-tools
+ * @typicalName argvTools
+ * @example
+ * const argvTools = require('argv-tools')
+ */
+
+/**
+ * Regular expressions for matching option formats.
+ * @static
+ */
+const re = {
+  short: /^-([^\d-])$/,
+  long: /^--(\S+)/,
+  combinedShort: /^-[^\d-]{2,}$/,
+  optEquals: /^(--\S+?)=(.*)/
+}
+
+/**
+ * Array subclass encapsulating common operations on `process.argv`.
+ * @static
+ */
+class ArgvArray extends Array {
+  /**
+   * Clears the array has loads the supplied input.
+   * @param {string[]} argv - The argv list to load. Defaults to `process.argv`.
+   */
+  load (argv) {
+    this.clear()
+    if (argv && argv !== process.argv) {
+      argv = arrayify(argv)
+    } else {
+      /* if no argv supplied, assume we are parsing process.argv */
+      argv = process.argv.slice(0)
+      const deleteCount = process.execArgv.some(isExecArg) ? 1 : 2
+      argv.splice(0, deleteCount)
+    }
+    argv.forEach(arg => this.push(String(arg)))
+  }
+
+  /**
+   * Clear the array.
+   */
+  clear () {
+    this.length = 0
+  }
+
+  /**
+   * expand ``--option=value` style args.
+   */
+  expandOptionEqualsNotation () {
+    if (this.some(arg => re.optEquals.test(arg))) {
+      const expandedArgs = []
+      this.forEach(arg => {
+        const matches = arg.match(re.optEquals)
+        if (matches) {
+          expandedArgs.push(matches[1], matches[2])
+        } else {
+          expandedArgs.push(arg)
+        }
+      })
+      this.clear()
+      this.load(expandedArgs)
+    }
+  }
+
+  /**
+   * expand getopt-style combinedShort options.
+   */
+  expandGetoptNotation () {
+    if (this.hasCombinedShortOptions()) {
+      findReplace(this, re.combinedShort, expandCombinedShortArg)
+    }
+  }
+
+  /**
+   * Returns true if the array contains combined short options (e.g. `-ab`).
+   * @returns {boolean}
+   */
+  hasCombinedShortOptions () {
+    return this.some(arg => re.combinedShort.test(arg))
+  }
+
+  static from (argv) {
+    const result = new this()
+    result.load(argv)
+    return result
+  }
+}
+
+/**
+ * Expand a combined short option.
+ * @param {string} - the string to expand, e.g. `-ab`
+ * @returns {string[]}
+ * @static
+ */
+function expandCombinedShortArg (arg) {
+  /* remove initial hypen */
+  arg = arg.slice(1)
+  return arg.split('').map(letter => '-' + letter)
+}
+
+/**
+ * Returns true if the supplied arg matches `--option=value` notation.
+ * @param {string} - the arg to test, e.g. `--one=something`
+ * @returns {boolean}
+ * @static
+ */
+function isOptionEqualsNotation (arg) {
+  return re.optEquals.test(arg)
+}
+
+/**
+ * Returns true if the supplied arg is in either long (`--one`) or short (`-o`) format.
+ * @param {string} - the arg to test, e.g. `--one`
+ * @returns {boolean}
+ * @static
+ */
+function isOption (arg) {
+  return (re.short.test(arg) || re.long.test(arg)) && !re.optEquals.test(arg)
+}
+
+/**
+ * Returns true if the supplied arg is in long (`--one`) format.
+ * @param {string} - the arg to test, e.g. `--one`
+ * @returns {boolean}
+ * @static
+ */
+function isLongOption (arg) {
+  return re.long.test(arg) && !isOptionEqualsNotation(arg)
+}
+
+/**
+ * Returns the name from a long, short or `--options=value` arg.
+ * @param {string} - the arg to inspect, e.g. `--one`
+ * @returns {string}
+ * @static
+ */
+function getOptionName (arg) {
+  if (re.short.test(arg)) {
+    return arg.match(re.short)[1]
+  } else if (isLongOption(arg)) {
+    return arg.match(re.long)[1]
+  } else if (isOptionEqualsNotation(arg)) {
+    return arg.match(re.optEquals)[1].replace(/^--/, '')
+  } else {
+    return null
+  }
+}
+
+function isValue (arg) {
+  return !(isOption(arg) || re.combinedShort.test(arg) || re.optEquals.test(arg))
+}
+
+function isExecArg (arg) {
+  return ['--eval', '-e'].indexOf(arg) > -1 || arg.startsWith('--eval=')
+}
+
+export {
+  expandCombinedShortArg,
+  re,
+  ArgvArray,
+  getOptionName,
+  isOption,
+  isLongOption,
+  isOptionEqualsNotation,
+  isValue
+}
diff --git a/igv_component/node_modules/command-line-args/lib/option-definition.mjs b/igv_component/node_modules/command-line-args/lib/option-definition.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..eb2e65cbf59139e07c14c82442b9eaae40eef58a
--- /dev/null
+++ b/igv_component/node_modules/command-line-args/lib/option-definition.mjs
@@ -0,0 +1,265 @@
+import t from '../node_modules/typical/index.mjs'
+
+/**
+ * @module option-definition
+ */
+
+/**
+ * Describes a command-line option. Additionally, if generating a usage guide with [command-line-usage](https://github.com/75lb/command-line-usage) you could optionally add `description` and `typeLabel` properties to each definition.
+ *
+ * @alias module:option-definition
+ * @typicalname option
+ */
+class OptionDefinition {
+  constructor (definition) {
+    /**
+    * The only required definition property is `name`, so the simplest working example is
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'file' },
+    *   { name: 'depth' }
+    * ]
+    * ```
+    *
+    * Where a `type` property is not specified it will default to `String`.
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | -------------------- | ------------ |
+    * | 1   | `--file` | `{ file: null }` |
+    * | 2   | `--file lib.js` | `{ file: 'lib.js' }` |
+    * | 3   | `--depth 2` | `{ depth: '2' }` |
+    *
+    * Unicode option names and aliases are valid, for example:
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'один' },
+    *   { name: '两' },
+    *   { name: 'три', alias: 'т' }
+    * ]
+    * ```
+    * @type {string}
+    */
+    this.name = definition.name
+
+    /**
+    * The `type` value is a setter function (you receive the output from this), enabling you to be specific about the type and value received.
+    *
+    * The most common values used are `String` (the default), `Number` and `Boolean` but you can use a custom function, for example:
+    *
+    * ```js
+    * const fs = require('fs')
+    *
+    * class FileDetails {
+    *   constructor (filename) {
+    *     this.filename = filename
+    *     this.exists = fs.existsSync(filename)
+    *   }
+    * }
+    *
+    * const cli = commandLineArgs([
+    *   { name: 'file', type: filename => new FileDetails(filename) },
+    *   { name: 'depth', type: Number }
+    * ])
+    * ```
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ----------------- | ------------ |
+    * | 1   | `--file asdf.txt` | `{ file: { filename: 'asdf.txt', exists: false } }` |
+    *
+    * The `--depth` option expects a `Number`. If no value was set, you will receive `null`.
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ----------------- | ------------ |
+    * | 2   | `--depth` | `{ depth: null }` |
+    * | 3   | `--depth 2` | `{ depth: 2 }` |
+    *
+    * @type {function}
+    * @default String
+    */
+    this.type = definition.type || String
+
+    /**
+    * getopt-style short option names. Can be any single character (unicode included) except a digit or hyphen.
+    *
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'hot', alias: 'h', type: Boolean },
+    *   { name: 'discount', alias: 'd', type: Boolean },
+    *   { name: 'courses', alias: 'c' , type: Number }
+    * ]
+    * ```
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ------------ | ------------ |
+    * | 1   | `-hcd` | `{ hot: true, courses: null, discount: true }` |
+    * | 2   | `-hdc 3` | `{ hot: true, discount: true, courses: 3 }` |
+    *
+    * @type {string}
+    */
+    this.alias = definition.alias
+
+    /**
+    * Set this flag if the option takes a list of values. You will receive an array of values, each passed through the `type` function (if specified).
+    *
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'files', type: String, multiple: true }
+    * ]
+    * ```
+    *
+    * Note, examples 1 and 3 below demonstrate "greedy" parsing which can be disabled by using `lazyMultiple`.
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ------------ | ------------ |
+    * | 1   | `--files one.js two.js` | `{ files: [ 'one.js', 'two.js' ] }` |
+    * | 2   | `--files one.js --files two.js` | `{ files: [ 'one.js', 'two.js' ] }` |
+    * | 3   | `--files *` | `{ files: [ 'one.js', 'two.js' ] }` |
+    *
+    * @type {boolean}
+    */
+    this.multiple = definition.multiple
+
+    /**
+     * Identical to `multiple` but with greedy parsing disabled.
+     *
+     * ```js
+     * const optionDefinitions = [
+     *   { name: 'files', lazyMultiple: true },
+     *   { name: 'verbose', alias: 'v', type: Boolean, lazyMultiple: true }
+     * ]
+     * ```
+     *
+     * | #   | argv input | commandLineArgs() output |
+     * | --- | ------------ | ------------ |
+     * | 1   | `--files one.js --files two.js` | `{ files: [ 'one.js', 'two.js' ] }` |
+     * | 2   | `-vvv` | `{ verbose: [ true, true, true ] }` |
+     *
+     * @type {boolean}
+     */
+    this.lazyMultiple = definition.lazyMultiple
+
+    /**
+    * Any values unaccounted for by an option definition will be set on the `defaultOption`. This flag is typically set on the most commonly-used option to make for more concise usage (i.e. `$ example *.js` instead of `$ example --files *.js`).
+    *
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'files', multiple: true, defaultOption: true }
+    * ]
+    * ```
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ------------ | ------------ |
+    * | 1   | `--files one.js two.js` | `{ files: [ 'one.js', 'two.js' ] }` |
+    * | 2   | `one.js two.js` | `{ files: [ 'one.js', 'two.js' ] }` |
+    * | 3   | `*` | `{ files: [ 'one.js', 'two.js' ] }` |
+    *
+    * @type {boolean}
+    */
+    this.defaultOption = definition.defaultOption
+
+    /**
+    * An initial value for the option.
+    *
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'files', multiple: true, defaultValue: [ 'one.js' ] },
+    *   { name: 'max', type: Number, defaultValue: 3 }
+    * ]
+    * ```
+    *
+    * | #   | argv input | commandLineArgs() output |
+    * | --- | ------------ | ------------ |
+    * | 1   |  | `{ files: [ 'one.js' ], max: 3 }` |
+    * | 2   | `--files two.js` | `{ files: [ 'two.js' ], max: 3 }` |
+    * | 3   | `--max 4` | `{ files: [ 'one.js' ], max: 4 }` |
+    *
+    * @type {*}
+    */
+    this.defaultValue = definition.defaultValue
+
+    /**
+    * When your app has a large amount of options it makes sense to organise them in groups.
+    *
+    * There are two automatic groups: `_all` (contains all options) and `_none` (contains options without a `group` specified in their definition).
+    *
+    * ```js
+    * const optionDefinitions = [
+    *   { name: 'verbose', group: 'standard' },
+    *   { name: 'help', group: [ 'standard', 'main' ] },
+    *   { name: 'compress', group: [ 'server', 'main' ] },
+    *   { name: 'static', group: 'server' },
+    *   { name: 'debug' }
+    * ]
+    * ```
+    *
+    *<table>
+    *  <tr>
+    *    <th>#</th><th>Command Line</th><th>commandLineArgs() output</th>
+    *  </tr>
+    *  <tr>
+    *    <td>1</td><td><code>--verbose</code></td><td><pre><code>
+    *{
+    *  _all: { verbose: true },
+    *  standard: { verbose: true }
+    *}
+    *</code></pre></td>
+    *  </tr>
+    *  <tr>
+    *    <td>2</td><td><code>--debug</code></td><td><pre><code>
+    *{
+    *  _all: { debug: true },
+    *  _none: { debug: true }
+    *}
+    *</code></pre></td>
+    *  </tr>
+    *  <tr>
+    *    <td>3</td><td><code>--verbose --debug --compress</code></td><td><pre><code>
+    *{
+    *  _all: {
+    *    verbose: true,
+    *    debug: true,
+    *    compress: true
+    *  },
+    *  standard: { verbose: true },
+    *  server: { compress: true },
+    *  main: { compress: true },
+    *  _none: { debug: true }
+    *}
+    *</code></pre></td>
+    *  </tr>
+    *  <tr>
+    *    <td>4</td><td><code>--compress</code></td><td><pre><code>
+    *{
+    *  _all: { compress: true },
+    *  server: { compress: true },
+    *  main: { compress: true }
+    *}
+    *</code></pre></td>
+    *  </tr>
+    *</table>
+    *
+    * @type {string|string[]}
+    */
+    this.group = definition.group
+
+    /* pick up any remaining properties */
+    for (const prop in definition) {
+      if (!this[prop]) this[prop] = definition[prop]
+    }
+  }
+
+  isBoolean () {
+    return this.type === Boolean || (t.isFunction(this.type) && this.type.name === 'Boolean')
+  }
+
+  isMultiple () {
+    return this.multiple || this.lazyMultiple
+  }
+
+  static create (def) {
+    const result = new this(def)
+    return result
+  }
+}
+
+export default OptionDefinition
diff --git a/igv_component/node_modules/command-line-args/lib/option-definitions.mjs b/igv_component/node_modules/command-line-args/lib/option-definitions.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..0bc879c6c7336ce49b9b35bf699dba1544bd61f6
--- /dev/null
+++ b/igv_component/node_modules/command-line-args/lib/option-definitions.mjs
@@ -0,0 +1,187 @@
+import arrayify from '../node_modules/array-back/index.mjs'
+import * as argvTools from './argv-tools.mjs'
+import t from '../node_modules/typical/index.mjs'
+import Definition from './option-definition.mjs'
+
+/**
+ * @module option-definitions
+ */
+
+/**
+ * @alias module:option-definitions
+ */
+class Definitions extends Array {
+  /**
+   * validate option definitions
+   * @param {boolean} [caseInsensitive=false] - whether arguments will be parsed in a case insensitive manner
+   * @returns {string}
+   */
+  validate (caseInsensitive) {
+    const someHaveNoName = this.some(def => !def.name)
+    if (someHaveNoName) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Invalid option definitions: the `name` property is required on each definition'
+      )
+    }
+
+    const someDontHaveFunctionType = this.some(def => def.type && typeof def.type !== 'function')
+    if (someDontHaveFunctionType) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Invalid option definitions: the `type` property must be a setter fuction (default: `Boolean`)'
+      )
+    }
+
+    let invalidOption
+
+    const numericAlias = this.some(def => {
+      invalidOption = def
+      return t.isDefined(def.alias) && t.isNumber(def.alias)
+    })
+    if (numericAlias) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Invalid option definition: to avoid ambiguity an alias cannot be numeric [--' + invalidOption.name + ' alias is -' + invalidOption.alias + ']'
+      )
+    }
+
+    const multiCharacterAlias = this.some(def => {
+      invalidOption = def
+      return t.isDefined(def.alias) && def.alias.length !== 1
+    })
+    if (multiCharacterAlias) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Invalid option definition: an alias must be a single character'
+      )
+    }
+
+    const hypenAlias = this.some(def => {
+      invalidOption = def
+      return def.alias === '-'
+    })
+    if (hypenAlias) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Invalid option definition: an alias cannot be "-"'
+      )
+    }
+
+    const duplicateName = hasDuplicates(this.map(def => caseInsensitive ? def.name.toLowerCase() : def.name))
+    if (duplicateName) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Two or more option definitions have the same name'
+      )
+    }
+
+    const duplicateAlias = hasDuplicates(this.map(def => caseInsensitive && t.isDefined(def.alias) ? def.alias.toLowerCase() : def.alias))
+    if (duplicateAlias) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Two or more option definitions have the same alias'
+      )
+    }
+
+    const duplicateDefaultOption = this.filter(def => def.defaultOption === true).length > 1;
+    if (duplicateDefaultOption) {
+      halt(
+        'INVALID_DEFINITIONS',
+        'Only one option definition can be the defaultOption'
+      )
+    }
+
+    const defaultBoolean = this.some(def => {
+      invalidOption = def
+      return def.isBoolean() && def.defaultOption
+    })
+    if (defaultBoolean) {
+      halt(
+        'INVALID_DEFINITIONS',
+        `A boolean option ["${invalidOption.name}"] can not also be the defaultOption.`
+      )
+    }
+  }
+
+  /**
+   * Get definition by option arg (e.g. `--one` or `-o`)
+   * @param {string} [arg] the argument name to get the definition for
+   * @param {boolean} [caseInsensitive] whether to use case insensitive comparisons when finding the appropriate definition
+   * @returns {Definition}
+   */
+  get (arg, caseInsensitive) {
+    if (argvTools.isOption(arg)) {
+      if (argvTools.re.short.test(arg)) {
+        const shortOptionName = argvTools.getOptionName(arg)
+        if (caseInsensitive) {
+          const lowercaseShortOptionName = shortOptionName.toLowerCase()
+          return this.find(def => t.isDefined(def.alias) && def.alias.toLowerCase() === lowercaseShortOptionName)
+        } else {
+          return this.find(def => def.alias === shortOptionName)
+        }
+      } else {
+        const optionName = argvTools.getOptionName(arg)
+        if (caseInsensitive) {
+          const lowercaseOptionName = optionName.toLowerCase()
+          return this.find(def => def.name.toLowerCase() === lowercaseOptionName)
+        } else {
+          return this.find(def => def.name === optionName)
+        }
+      }
+    } else {
+      return this.find(def => def.name === arg)
+    }
+  }
+
+  getDefault () {
+    return this.find(def => def.defaultOption === true)
+  }
+
+  isGrouped () {
+    return this.some(def => def.group)
+  }
+
+  whereGrouped () {
+    return this.filter(containsValidGroup)
+  }
+
+  whereNotGrouped () {
+    return this.filter(def => !containsValidGroup(def))
+  }
+
+  whereDefaultValueSet () {
+    return this.filter(def => t.isDefined(def.defaultValue))
+  }
+
+  static from (definitions, caseInsensitive) {
+    if (definitions instanceof this) return definitions
+    const result = super.from(arrayify(definitions), def => Definition.create(def))
+    result.validate(caseInsensitive)
+    return result
+  }
+}
+
+function halt (name, message) {
+  const err = new Error(message)
+  err.name = name
+  throw err
+}
+
+function containsValidGroup (def) {
+  return arrayify(def.group).some(group => group)
+}
+
+function hasDuplicates (array) {
+  const items = {}
+  for (let i = 0; i < array.length; i++) {
+    const value = array[i]
+    if (items[value]) {
+      return true
+    } else {
+      if (t.isDefined(value)) items[value] = true
+    }
+  }
+}
+
+export default Definitions
diff --git a/igv_component/node_modules/command-line-args/lib/option-flag.mjs b/igv_component/node_modules/command-line-args/lib/option-flag.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..4bbf0c8a651b280cac6fe22be7edcfbe25697e6d
--- /dev/null
+++ b/igv_component/node_modules/command-line-args/lib/option-flag.mjs
@@ -0,0 +1,13 @@
+import Option from './option.mjs'
+
+class FlagOption extends Option {
+  set (val) {
+    super.set(true)
+  }
+
+  static create (def) {
+    return new this(def)
+  }
+}
+
+export default FlagOption
diff --git a/igv_component/node_modules/command-line-args/lib/option.mjs b/igv_component/node_modules/command-line-args/lib/option.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..eca901346f7582df07803836a0e6871b1ab4faa8
--- /dev/null
+++ b/igv_component/node_modules/command-line-args/lib/option.mjs
@@ -0,0 +1,92 @@
+import arrayify from '../node_modules/array-back/index.mjs'
+import t from '../node_modules/typical/index.mjs'
+import Definition from './option-definition.mjs'
+const _value = new WeakMap()
+
+/**
+ * Encapsulates behaviour (defined by an OptionDefinition) when setting values
+ */
+class Option {
+  constructor (definition) {
+    this.definition = new Definition(definition)
+    this.state = null /* set or default */
+    this.resetToDefault()
+  }
+
+  get () {
+    return _value.get(this)
+  }
+
+  set (val) {
+    this._set(val, 'set')
+  }
+
+  _set (val, state) {
+    const def = this.definition
+    if (def.isMultiple()) {
+      /* don't add null or undefined to a multiple */
+      if (val !== null && val !== undefined) {
+        const arr = this.get()
+        if (this.state === 'default') arr.length = 0
+        arr.push(def.type(val))
+        this.state = state
+      }
+    } else {
+      /* throw if already set on a singlar defaultOption */
+      if (!def.isMultiple() && this.state === 'set') {
+        const err = new Error(`Singular option already set [${this.definition.name}=${this.get()}]`)
+        err.name = 'ALREADY_SET'
+        err.value = val
+        err.optionName = def.name
+        throw err
+      } else if (val === null || val === undefined) {
+        _value.set(this, val)
+        // /* required to make 'partial: defaultOption with value equal to defaultValue 2' pass */
+        // if (!(def.defaultOption && !def.isMultiple())) {
+        //   this.state = state
+        // }
+      } else {
+        _value.set(this, def.type(val))
+        this.state = state
+      }
+    }
+  }
+
+  resetToDefault () {
+    if (t.isDefined(this.definition.defaultValue)) {
+      if (this.definition.isMultiple()) {
+        _value.set(this, arrayify(this.definition.defaultValue).slice())
+      } else {
+        _value.set(this, this.definition.defaultValue)
+      }
+    } else {
+      if (this.definition.isMultiple()) {
+        _value.set(this, [])
+      } else {
+        _value.set(this, null)
+      }
+    }
+    this.state = 'default'
+  }
+
+  static create (definition) {
+    definition = new Definition(definition)
+    if (definition.isBoolean()) {
+      return FlagOption.create(definition)
+    } else {
+      return new this(definition)
+    }
+  }
+}
+
+class FlagOption extends Option {
+  set (val) {
+    super.set(true)
+  }
+
+  static create (def) {
+    return new this(def)
+  }
+}
+
+export default Option
diff --git a/igv_component/node_modules/command-line-args/lib/output-grouped.mjs b/igv_component/node_modules/command-line-args/lib/output-grouped.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..ed78b1d2167409369a7d7820409ad867debd2dd6
--- /dev/null
+++ b/igv_component/node_modules/command-line-args/lib/output-grouped.mjs
@@ -0,0 +1,40 @@
+import Output from './output.mjs'
+import arrayify from '../node_modules/array-back/index.mjs'
+import t from '../node_modules/typical/index.mjs'
+import camelCase from 'lodash.camelcase'
+
+class GroupedOutput extends Output {
+  toObject (options) {
+    const superOutputNoCamel = super.toObject({ skipUnknown: options.skipUnknown })
+    const superOutput = super.toObject(options)
+    const unknown = superOutput._unknown
+    delete superOutput._unknown
+    const grouped = {
+      _all: superOutput
+    }
+    if (unknown && unknown.length) grouped._unknown = unknown
+
+    this.definitions.whereGrouped().forEach(def => {
+      const name = options.camelCase ? camelCase(def.name) : def.name
+      const outputValue = superOutputNoCamel[def.name]
+      for (const groupName of arrayify(def.group)) {
+        grouped[groupName] = grouped[groupName] || {}
+        if (t.isDefined(outputValue)) {
+          grouped[groupName][name] = outputValue
+        }
+      }
+    })
+
+    this.definitions.whereNotGrouped().forEach(def => {
+      const name = options.camelCase ? camelCase(def.name) : def.name
+      const outputValue = superOutputNoCamel[def.name]
+      if (t.isDefined(outputValue)) {
+        if (!grouped._none) grouped._none = {}
+        grouped._none[name] = outputValue
+      }
+    })
+    return grouped
+  }
+}
+
+export default GroupedOutput
diff --git a/igv_component/node_modules/command-line-args/lib/output.mjs b/igv_component/node_modules/command-line-args/lib/output.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..f52a091504c938d977e83f1e37d3a3b4ad2d6e1a
--- /dev/null
+++ b/igv_component/node_modules/command-line-args/lib/output.mjs
@@ -0,0 +1,38 @@
+import Option from './option.mjs'
+import Definitions from './option-definitions.mjs'
+import camelCase from 'lodash.camelcase'
+
+/**
+ * A map of { DefinitionNameString: Option }. By default, an Output has an `_unknown` property and any options with defaultValues.
+ */
+class Output extends Map {
+  constructor (definitions) {
+    super()
+    /**
+     * @type {OptionDefinitions}
+     */
+    this.definitions = Definitions.from(definitions)
+
+    /* by default, an Output has an `_unknown` property and any options with defaultValues */
+    this.set('_unknown', Option.create({ name: '_unknown', multiple: true }))
+    for (const def of this.definitions.whereDefaultValueSet()) {
+      this.set(def.name, Option.create(def))
+    }
+  }
+
+  toObject (options) {
+    options = options || {}
+    const output = {}
+    for (const item of this) {
+      const name = options.camelCase && item[0] !== '_unknown' ? camelCase(item[0]) : item[0]
+      const option = item[1]
+      if (name === '_unknown' && !option.get().length) continue
+      output[name] = option.get()
+    }
+
+    if (options.skipUnknown) delete output._unknown
+    return output
+  }
+}
+
+export default Output
diff --git a/igv_component/node_modules/command-line-args/package.json b/igv_component/node_modules/command-line-args/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..7431e102a977e326f05f2770c299606ed0fbb05a
--- /dev/null
+++ b/igv_component/node_modules/command-line-args/package.json
@@ -0,0 +1,58 @@
+{
+  "name": "command-line-args",
+  "version": "5.2.1",
+  "description": "A mature, feature-complete library to parse command-line options.",
+  "repository": "https://github.com/75lb/command-line-args",
+  "scripts": {
+    "test": "npm run dist && npm run test:js && npm run test:mjs",
+    "test:js": "node dist/tests.js",
+    "test:mjs": "node --experimental-modules test/tests.mjs",
+    "test:ci": "npm run test:js",
+    "docs": "jsdoc2md -c jsdoc.conf index.mjs > doc/API.md && jsdoc2md -c jsdoc.conf lib/option-definition.mjs > doc/option-definition.md",
+    "cover": "nyc --reporter=text-lcov test-runner test/*.js test/internals/*.js | coveralls",
+    "dist": "rollup index.mjs -f cjs -e 'lodash.camelcase' -o dist/index.js && rollup index.mjs -f esm -e 'lodash.camelcase' -o dist/index.mjs && rollup test/tests.mjs -f cjs -e 'test-runner,assert,lodash.camelcase' -o dist/tests.js"
+  },
+  "main": "dist/index.js",
+  "keywords": [
+    "argv",
+    "parse",
+    "argument",
+    "args",
+    "option",
+    "options",
+    "parser",
+    "parsing",
+    "cli",
+    "command",
+    "line"
+  ],
+  "author": "Lloyd Brookes <75pound@gmail.com>",
+  "license": "MIT",
+  "engines": {
+    "node": ">=4.0.0"
+  },
+  "files": [
+    "index.mjs",
+    "lib",
+    "dist/index.js",
+    "dist/index.mjs"
+  ],
+  "devDependencies": {
+    "coveralls": "^3.1.1",
+    "jsdoc-to-markdown": "^7.1.1",
+    "rollup": "~1.7.4",
+    "test-runner": "^0.5.1"
+  },
+  "dependencies": {
+    "array-back": "^3.1.0",
+    "find-replace": "^3.0.0",
+    "lodash.camelcase": "^4.3.0",
+    "typical": "^4.0.0"
+  },
+  "standard": {
+    "ignore": [
+      "dist"
+    ],
+    "envs": []
+  }
+}
diff --git a/igv_component/node_modules/command-line-usage/LICENSE b/igv_component/node_modules/command-line-usage/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..92637037aec50c539f37f80263e0b9bc048e916f
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015-22 Lloyd Brookes <75pound@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/igv_component/node_modules/command-line-usage/README.md b/igv_component/node_modules/command-line-usage/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..41924137a66d506a859000100b06904465c20b88
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/README.md
@@ -0,0 +1,120 @@
+[![view on npm](https://badgen.net/npm/v/command-line-usage)](https://www.npmjs.org/package/command-line-usage)
+[![npm module downloads](https://badgen.net/npm/dt/command-line-usage)](https://www.npmjs.org/package/command-line-usage)
+[![Gihub repo dependents](https://badgen.net/github/dependents-repo/75lb/command-line-usage)](https://github.com/75lb/command-line-usage/network/dependents?dependent_type=REPOSITORY)
+[![Gihub package dependents](https://badgen.net/github/dependents-pkg/75lb/command-line-usage)](https://github.com/75lb/command-line-usage/network/dependents?dependent_type=PACKAGE)
+[![Node.js CI](https://github.com/75lb/command-line-usage/actions/workflows/node.js.yml/badge.svg)](https://github.com/75lb/command-line-usage/actions/workflows/node.js.yml)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/command-line-usage/badge.svg)](https://coveralls.io/github/75lb/command-line-usage)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+# command-line-usage
+
+***Upgraders, please check the [release notes](https://github.com/75lb/command-line-usage/releases).***
+
+A simple, data-driven module for creating a usage guide.
+
+## Synopsis
+
+A usage guide is created by first defining an arbitrary number of sections, e.g. a description section, synopsis, option list, examples, footer etc. Each section has an optional header, some content and must be of type [`content`](https://github.com/75lb/command-line-usage/blob/master/doc/api.md#module_command-line-usage--commandLineUsage..content) or [`optionList`](https://github.com/75lb/command-line-usage/blob/master/doc/api.md#module_command-line-usage--commandLineUsage..optionList). This section data is passed to [`commandLineUsage()`](https://github.com/75lb/command-line-usage/blob/master/doc/api.md#exp_module_command-line-usage--commandLineUsage) which returns a usage guide.
+
+Inline ansi formatting can be used anywhere within section content using [chalk template literal syntax](https://github.com/chalk/chalk/tree/v2.4.2#tagged-template-literal).
+
+For example, this script:
+```js
+import commandLineUsage from 'command-line-usage'
+
+const sections = [
+  {
+    header: 'A typical app',
+    content: 'Generates something {italic very} important.'
+  },
+  {
+    header: 'Options',
+    optionList: [
+      {
+        name: 'input',
+        typeLabel: '{underline file}',
+        description: 'The input to process.'
+      },
+      {
+        name: 'help',
+        description: 'Print this usage guide.'
+      }
+    ]
+  }
+]
+const usage = commandLineUsage(sections)
+console.log(usage)
+```
+
+Outputs this guide:
+
+<img src="https://raw.githubusercontent.com/75lb/command-line-usage/master/example/screens/synopsis.png" width="90%">
+
+## Some examples
+
+### Typical
+
+A fairly typical usage guide with three sections - description, option list and footer. [Code](https://github.com/75lb/command-line-usage/wiki/How-to-create-a-typical-usage-guide).
+
+<img src="https://raw.githubusercontent.com/75lb/command-line-usage/master/example/screens/simple.png" width="90%">
+
+### Option List groups
+
+Demonstrates breaking the option list up into groups. [Code](https://github.com/75lb/command-line-usage/wiki/How-to-break-the-option-list-up-into-groups).
+
+<img src="https://raw.githubusercontent.com/75lb/command-line-usage/master/example/screens/groups.png" width="90%">
+
+### Banners
+
+A banner is created by adding the `raw: true` property to your `content`. This flag disables any formatting on the content, displaying it raw as supplied.
+
+#### Header
+
+Demonstrates a banner at the top. This example also adds a `synopsis` section. [Code](https://github.com/75lb/command-line-usage/wiki/How-to-add-a-banner-to-your-usage-guide#code).
+
+<img src="https://raw.githubusercontent.com/75lb/command-line-usage/master/example/screens/header.png" width="90%">
+
+#### Footer
+
+Demonstrates a footer banner. [Code](https://github.com/75lb/command-line-usage/wiki/How-to-add-a-banner-to-your-usage-guide#code-1).
+
+<img src="https://raw.githubusercontent.com/75lb/command-line-usage/master/example/screens/footer.png" width="90%">
+
+### Examples section (table layout)
+
+An examples section is added. To achieve this table layout, supply the `content` as an array of objects. The property names of each object are not important, so long as they are consistent throughout the array. [Code](https://github.com/75lb/command-line-usage/wiki/How-to-add-an-examples-section-to-your-usage-guide).
+
+<img src="https://raw.githubusercontent.com/75lb/command-line-usage/master/example/screens/example-columns.png" width="90%">
+
+### Advanced optionList layout
+
+The `optionList` layout is fully configurable by setting the `tableOptions` property with an options object suitable for passing into [table-layout](https://github.com/75lb/table-layout#table-). This example overrides the default column widths and adds flame padding. [Code](https://github.com/75lb/command-line-usage/wiki/How-to-use-advanced-optionList-table-formatting).
+
+<img src="https://raw.githubusercontent.com/75lb/command-line-usage/master/example/screens/option-list-options.png" width="90%">
+
+### Command list
+
+Useful if your app is command-driven, like git or npm. [Code](https://github.com/75lb/command-line-usage/wiki/How-to-add-a-command-list-to-your-usage-guide).
+
+<img src="https://raw.githubusercontent.com/75lb/command-line-usage/master/example/screens/command-list.png" width="90%">
+
+### Description section (table layout)
+
+Demonstrates supplying specific [table layout](https://github.com/75lb/table-layout) options to achieve more advanced layout. In this case the second column (containing the hammer and sickle) has a fixed `width` of 40 and `noWrap` enabled (as the input is already formatted as desired). [Code](https://github.com/75lb/command-line-usage/wiki/How-to-add-a-description-section-to-your-usage-guide).
+
+<img src="https://raw.githubusercontent.com/75lb/command-line-usage/master/example/screens/description-columns.png" width="90%">
+
+### Real-life
+
+The [polymer-cli](https://github.com/Polymer/tools/tree/master/packages/cli) usage guide is a good real-life example.
+
+<img src="https://raw.githubusercontent.com/75lb/command-line-usage/master/example/screens/polymer.png" width="90%">
+
+## Documentation
+
+* [API Reference](https://github.com/75lb/command-line-usage/blob/master/doc/api.md)
+* [The full list of examples](https://github.com/75lb/command-line-usage/wiki)
+
+* * *
+
+&copy; 2015-22 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/75lb/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/command-line-usage/index.js b/igv_component/node_modules/command-line-usage/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..d93c6c547be1db25034c60de806a980d42c92bcc
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/index.js
@@ -0,0 +1,30 @@
+/**
+ * @module command-line-usage
+ */
+
+/**
+ * Generates a usage guide suitable for a command-line app.
+ * @param {Section|Section[]} - One or more section objects ({@link module:command-line-usage~content} or {@link module:command-line-usage~optionList}).
+ * @returns {string}
+ * @alias module:command-line-usage
+ */
+function commandLineUsage (sections) {
+  const arrayify = require('array-back')
+  sections = arrayify(sections)
+  if (sections.length) {
+    const OptionList = require('./lib/section/option-list')
+    const ContentSection = require('./lib/section/content')
+    const output = sections.map(section => {
+      if (section.optionList) {
+        return new OptionList(section)
+      } else {
+        return new ContentSection(section)
+      }
+    })
+    return '\n' + output.join('\n')
+  } else {
+    return ''
+  }
+}
+
+module.exports = commandLineUsage
diff --git a/igv_component/node_modules/command-line-usage/lib/chalk-format.js b/igv_component/node_modules/command-line-usage/lib/chalk-format.js
new file mode 100644
index 0000000000000000000000000000000000000000..c544cced7ada9d5b1be148dd42503cf4c6719f28
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/lib/chalk-format.js
@@ -0,0 +1,11 @@
+function chalkFormat (str) {
+  if (str) {
+    str = str.replace(/`/g, '\\`')
+    const chalk = require('chalk')
+    return chalk(Object.assign([], { raw: [str] }))
+  } else {
+    return ''
+  }
+}
+
+module.exports = chalkFormat
diff --git a/igv_component/node_modules/command-line-usage/lib/section.js b/igv_component/node_modules/command-line-usage/lib/section.js
new file mode 100644
index 0000000000000000000000000000000000000000..821a3668dc87b622bcee34f9b7a1afa002593d32
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/lib/section.js
@@ -0,0 +1,29 @@
+class Section {
+  constructor () {
+    this.lines = []
+  }
+
+  add (lines) {
+    if (lines) {
+      const arrayify = require('array-back')
+      arrayify(lines).forEach(line => this.lines.push(line))
+    } else {
+      this.lines.push('')
+    }
+  }
+
+  toString () {
+    const os = require('os')
+    return this.lines.join(os.EOL)
+  }
+
+  header (text) {
+    const chalk = require('chalk')
+    if (text) {
+      this.add(chalk.underline.bold(text))
+      this.add()
+    }
+  }
+}
+
+module.exports = Section
diff --git a/igv_component/node_modules/command-line-usage/lib/section/content.js b/igv_component/node_modules/command-line-usage/lib/section/content.js
new file mode 100644
index 0000000000000000000000000000000000000000..4287f6093579b54862ba95ec8a0b0680dc8c29b1
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/lib/section/content.js
@@ -0,0 +1,154 @@
+const Section = require('../section')
+const t = require('typical')
+const Table = require('table-layout')
+const chalkFormat = require('../chalk-format')
+
+class ContentSection extends Section {
+  constructor (section) {
+    super()
+    this.header(section.header)
+
+    if (section.content) {
+      /* add content without indentation or wrapping */
+      if (section.raw) {
+        const arrayify = require('array-back')
+        const content = arrayify(section.content).map(line => chalkFormat(line))
+        this.add(content)
+      } else {
+        this.add(getContentLines(section.content))
+      }
+
+      this.add()
+    }
+  }
+}
+
+function getContentLines (content) {
+  const defaultPadding = { left: '  ', right: ' ' }
+
+  if (content) {
+    /* string content */
+    if (t.isString(content)) {
+      const table = new Table({ column: chalkFormat(content) }, {
+        padding: defaultPadding,
+        maxWidth: 80
+      })
+      return table.renderLines()
+
+    /* array of strings */
+    } else if (Array.isArray(content) && content.every(t.isString)) {
+      const rows = content.map(string => ({ column: chalkFormat(string) }))
+      const table = new Table(rows, {
+        padding: defaultPadding,
+        maxWidth: 80
+      })
+      return table.renderLines()
+
+    /* array of objects (use table-layout) */
+    } else if (Array.isArray(content) && content.every(t.isPlainObject)) {
+      const table = new Table(content.map(row => ansiFormatRow(row)), {
+        padding: defaultPadding
+      })
+      return table.renderLines()
+
+    /* { options: object, data: object[] } */
+    } else if (t.isPlainObject(content)) {
+      if (!content.options || !content.data) {
+        throw new Error('must have an "options" or "data" property\n' + JSON.stringify(content))
+      }
+      const options = Object.assign(
+        { padding: defaultPadding },
+        content.options
+      )
+
+      /* convert nowrap to noWrap to avoid breaking compatibility */
+      if (options.columns) {
+        options.columns = options.columns.map(column => {
+          if (column.nowrap) {
+            column.noWrap = column.nowrap
+            delete column.nowrap
+          }
+          return column
+        })
+      }
+
+      const table = new Table(
+        content.data.map(row => ansiFormatRow(row)),
+        options
+      )
+      return table.renderLines()
+    } else {
+      const message = `invalid input - 'content' must be a string, array of strings, or array of plain objects:\n\n${JSON.stringify(content)}`
+      throw new Error(message)
+    }
+  }
+}
+
+function ansiFormatRow (row) {
+  for (const key in row) {
+    row[key] = chalkFormat(row[key])
+  }
+  return row
+}
+
+module.exports = ContentSection
+
+/**
+ * A Content section comprises a header and one or more lines of content.
+ * @typedef module:command-line-usage~content
+ * @property header {string} - The section header, always bold and underlined.
+ * @property content {string|string[]|object[]} - Overloaded property, accepting data in one of four formats:
+ *
+ * 1. A single string (one line of text)
+ * 2. An array of strings (multiple lines of text)
+ * 3. An array of objects (recordset-style data). In this case, the data will be rendered in table format. The property names of each object are not important, so long as they are consistent throughout the array.
+ * 4. An object with two properties - `data` and `options`. In this case, the data and options will be passed directly to the underlying [table layout](https://github.com/75lb/table-layout) module for rendering.
+ *
+ * @property raw {boolean} - Set to true to avoid indentation and wrapping. Useful for banners.
+ * @example
+ * Simple string of content. For ansi formatting, use [chalk template literal syntax](https://github.com/chalk/chalk#tagged-template-literal).
+ * ```js
+ * {
+ *   header: 'A typical app',
+ *   content: 'Generates something {rgb(255,200,0).italic very {underline.bgRed important}}.'
+ * }
+ * ```
+ *
+ * An array of strings is interpreted as lines, to be joined by the system newline character.
+ * ```js
+ * {
+ *   header: 'A typical app',
+ *   content: [
+ *     'First line.',
+ *     'Second line.'
+ *   ]
+ * }
+ * ```
+ *
+ * An array of recordset-style objects are rendered in table layout.
+ * ```js
+ * {
+ *   header: 'A typical app',
+ *   content: [
+ *     { colA: 'First row, first column.', colB: 'First row, second column.'},
+ *     { colA: 'Second row, first column.', colB: 'Second row, second column.'}
+ *   ]
+ * }
+ * ```
+ *
+ * An object with `data` and `options` properties will be passed directly to the underlying [table layout](https://github.com/75lb/table-layout) module for rendering.
+ * ```js
+ * {
+ *   header: 'A typical app',
+ *   content: {
+ *     data: [
+ *      { colA: 'First row, first column.', colB: 'First row, second column.'},
+ *      { colA: 'Second row, first column.', colB: 'Second row, second column.'}
+ *     ],
+ *     options: {
+ *       maxWidth: 60
+ *     }
+ *   }
+ * }
+ * ```
+ */
diff --git a/igv_component/node_modules/command-line-usage/lib/section/option-list.js b/igv_component/node_modules/command-line-usage/lib/section/option-list.js
new file mode 100644
index 0000000000000000000000000000000000000000..9214c1306470a20cb23e2e147290692e6649fd29
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/lib/section/option-list.js
@@ -0,0 +1,128 @@
+const Section = require('../section')
+const Table = require('table-layout')
+const chalk = require('../chalk-format')
+const t = require('typical')
+const arrayify = require('array-back')
+
+class OptionList extends Section {
+  constructor (data) {
+    super()
+    let definitions = arrayify(data.optionList)
+    const hide = arrayify(data.hide)
+    const groups = arrayify(data.group)
+
+    /* filter out hidden definitions */
+    if (hide.length) {
+      definitions = definitions.filter(definition => {
+        return hide.indexOf(definition.name) === -1
+      })
+    }
+
+    if (data.header) this.header(data.header)
+
+    if (groups.length) {
+      definitions = definitions.filter(def => {
+        const noGroupMatch = groups.indexOf('_none') > -1 && !t.isDefined(def.group)
+        const groupMatch = intersect(arrayify(def.group), groups)
+        if (noGroupMatch || groupMatch) return def
+      })
+    }
+
+    const rows = definitions.map(def => {
+      return {
+        option: getOptionNames(def, data.reverseNameOrder),
+        description: chalk(def.description)
+      }
+    })
+
+    const tableOptions = data.tableOptions || {
+      padding: { left: '  ', right: ' ' },
+      columns: [
+        { name: 'option', noWrap: true },
+        { name: 'description', maxWidth: 80 }
+      ]
+    }
+    const table = new Table(rows, tableOptions)
+    this.add(table.renderLines())
+
+    this.add()
+  }
+}
+
+function getOptionNames (definition, reverseNameOrder) {
+  let type = definition.type ? definition.type.name.toLowerCase() : 'string'
+  const multiple = (definition.multiple || definition.lazyMultiple) ? '[]' : ''
+  if (type) {
+    type = type === 'boolean' ? '' : `{underline ${type}${multiple}}`
+  }
+  type = chalk(definition.typeLabel || type)
+
+  let result = ''
+  if (definition.alias) {
+    if (definition.name) {
+      if (reverseNameOrder) {
+        result = chalk(`{bold --${definition.name}}, {bold -${definition.alias}} ${type}`)
+      } else {
+        result = chalk(`{bold -${definition.alias}}, {bold --${definition.name}} ${type}`)
+      }
+    } else {
+      if (reverseNameOrder) {
+        result = chalk(`{bold -${definition.alias}} ${type}`)
+      } else {
+        result = chalk(`{bold -${definition.alias}} ${type}`)
+      }
+    }
+  } else {
+    result = chalk(`{bold --${definition.name}} ${type}`)
+  }
+  return result
+}
+
+function intersect (arr1, arr2) {
+  return arr1.some(function (item1) {
+    return arr2.some(function (item2) {
+      return item1 === item2
+    })
+  })
+}
+
+module.exports = OptionList
+
+/**
+ * An OptionList section adds a table displaying the supplied option definitions.
+ * @typedef module:command-line-usage~optionList
+ * @property {string} [header] - The section header, always bold and underlined.
+ * @property optionList {OptionDefinition[]} - An array of [option definition](https://github.com/75lb/command-line-args/blob/master/doc/option-definition.md) objects. In addition to the regular definition properties, command-line-usage will look for:
+ *
+ * - `description` - a string describing the option.
+ * - `typeLabel` - a string to replace the default type string (e.g. `<string>`). It's often more useful to set a more descriptive type label, like `<ms>`, `<files>`, `<command>` etc.
+ * @property {string|string[]} [group] - If specified, only options from this particular group will be printed. [Example](https://github.com/75lb/command-line-usage/blob/master/example/groups.js).
+ * @property {string|string[]} [hide] - The names of one of more option definitions to hide from the option list. [Example](https://github.com/75lb/command-line-usage/blob/master/example/hide.js).
+ * @property {boolean} [reverseNameOrder] - If true, the option alias will be displayed after the name, i.e. `--verbose, -v` instead of `-v, --verbose`).
+ * @property {object} [tableOptions] - An options object suitable for passing into [table-layout](https://github.com/75lb/table-layout#table-). See [here for an example](https://github.com/75lb/command-line-usage/blob/master/example/option-list-options.js).
+ *
+ * @example
+ * {
+ *   header: 'Options',
+ *   optionList: [
+ *     {
+ *       name: 'help',
+ *       alias: 'h',
+ *       description: 'Display this usage guide.'
+ *     },
+ *     {
+ *       name: 'src',
+ *       description: 'The input files to process',
+ *       multiple: true,
+ *       defaultOption: true,
+ *       typeLabel: '{underline file} ...'
+ *     },
+ *     {
+ *       name: 'timeout',
+ *       description: 'Timeout value in ms.',
+ *       alias: 't',
+ *       typeLabel: '{underline ms}'
+ *     }
+ *   ]
+ * }
+ */
diff --git a/igv_component/node_modules/command-line-usage/node_modules/array-back/LICENSE b/igv_component/node_modules/command-line-usage/node_modules/array-back/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..203018f1e665160f2a3a51ff1fe91e9717af0b78
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/node_modules/array-back/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015-19 Lloyd Brookes <75pound@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/igv_component/node_modules/command-line-usage/node_modules/array-back/README.hbs b/igv_component/node_modules/command-line-usage/node_modules/array-back/README.hbs
new file mode 100644
index 0000000000000000000000000000000000000000..7d84bd250b9769a604c996d6ef1e8f055e762591
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/node_modules/array-back/README.hbs
@@ -0,0 +1,40 @@
+[![view on npm](https://img.shields.io/npm/v/array-back.svg)](https://www.npmjs.org/package/array-back)
+[![npm module downloads](https://img.shields.io/npm/dt/array-back.svg)](https://www.npmjs.org/package/array-back)
+[![Build Status](https://travis-ci.org/75lb/array-back.svg?branch=master)](https://travis-ci.org/75lb/array-back)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/array-back/badge.svg?branch=master)](https://coveralls.io/github/75lb/array-back?branch=master)
+[![Dependency Status](https://badgen.net/david/dep/75lb/array-back)](https://david-dm.org/75lb/array-back)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+{{>main}}
+
+### Load anywhere
+
+This library is compatible with Node.js, the Web and any style of module loader. It can be loaded anywhere, natively without transpilation.
+
+Node.js:
+
+```js
+const arrayify = require('array-back')
+```
+
+Within Node.js with ECMAScript Module support enabled:
+
+```js
+import arrayify from 'array-back'
+```
+
+Within an modern browser ECMAScript Module:
+
+```js
+import arrayify from './node_modules/array-back/index.mjs'
+```
+
+Old browser (adds `window.arrayBack`):
+
+```html
+<script nomodule src="./node_modules/array-back/dist/index.js"></script>
+```
+
+* * *
+
+&copy; 2015-19 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/75lb/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/command-line-usage/node_modules/array-back/README.md b/igv_component/node_modules/command-line-usage/node_modules/array-back/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..431339e10279f7bb648e45ea92dadc75e2cb0d27
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/node_modules/array-back/README.md
@@ -0,0 +1,81 @@
+[![view on npm](https://img.shields.io/npm/v/array-back.svg)](https://www.npmjs.org/package/array-back)
+[![npm module downloads](https://img.shields.io/npm/dt/array-back.svg)](https://www.npmjs.org/package/array-back)
+[![Build Status](https://travis-ci.org/75lb/array-back.svg?branch=master)](https://travis-ci.org/75lb/array-back)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/array-back/badge.svg?branch=master)](https://coveralls.io/github/75lb/array-back?branch=master)
+[![Dependency Status](https://badgen.net/david/dep/75lb/array-back)](https://david-dm.org/75lb/array-back)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+<a name="module_array-back"></a>
+
+## array-back
+Takes any input and guarantees an array back.
+
+- Converts array-like objects (e.g. `arguments`, `Set`) to a real array.
+- Converts `undefined` to an empty array.
+- Converts any another other, singular value (including `null`, objects and iterables other than `Set`) into an array containing that value.
+- Ignores input which is already an array.
+
+**Example**  
+```js
+> const arrayify = require('array-back')
+
+> arrayify(undefined)
+[]
+
+> arrayify(null)
+[ null ]
+
+> arrayify(0)
+[ 0 ]
+
+> arrayify([ 1, 2 ])
+[ 1, 2 ]
+
+> arrayify(new Set([ 1, 2 ]))
+[ 1, 2 ]
+
+> function f(){ return arrayify(arguments); }
+> f(1,2,3)
+[ 1, 2, 3 ]
+```
+<a name="exp_module_array-back--arrayify"></a>
+
+### arrayify(input) ⇒ <code>Array</code> ⏏
+**Kind**: Exported function  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | The input value to convert to an array |
+
+
+### Load anywhere
+
+This library is compatible with Node.js, the Web and any style of module loader. It can be loaded anywhere, natively without transpilation.
+
+Node.js:
+
+```js
+const arrayify = require('array-back')
+```
+
+Within Node.js with ECMAScript Module support enabled:
+
+```js
+import arrayify from 'array-back'
+```
+
+Within an modern browser ECMAScript Module:
+
+```js
+import arrayify from './node_modules/array-back/index.mjs'
+```
+
+Old browser (adds `window.arrayBack`):
+
+```html
+<script nomodule src="./node_modules/array-back/dist/index.js"></script>
+```
+
+* * *
+
+&copy; 2015-19 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/75lb/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/command-line-usage/node_modules/array-back/dist/index.js b/igv_component/node_modules/command-line-usage/node_modules/array-back/dist/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..3b97b84c92f3af5f87e55f43021bbf8ab49eb86d
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/node_modules/array-back/dist/index.js
@@ -0,0 +1,70 @@
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global = global || self, global.arrayBack = factory());
+}(this, (function () { 'use strict';
+
+  /**
+   * Takes any input and guarantees an array back.
+   *
+   * - Converts array-like objects (e.g. `arguments`, `Set`) to a real array.
+   * - Converts `undefined` to an empty array.
+   * - Converts any another other, singular value (including `null`, objects and iterables other than `Set`) into an array containing that value.
+   * - Ignores input which is already an array.
+   *
+   * @module array-back
+   * @example
+   * > const arrayify = require('array-back')
+   *
+   * > arrayify(undefined)
+   * []
+   *
+   * > arrayify(null)
+   * [ null ]
+   *
+   * > arrayify(0)
+   * [ 0 ]
+   *
+   * > arrayify([ 1, 2 ])
+   * [ 1, 2 ]
+   *
+   * > arrayify(new Set([ 1, 2 ]))
+   * [ 1, 2 ]
+   *
+   * > function f(){ return arrayify(arguments); }
+   * > f(1,2,3)
+   * [ 1, 2, 3 ]
+   */
+
+  function isObject (input) {
+    return typeof input === 'object' && input !== null
+  }
+
+  function isArrayLike (input) {
+    return isObject(input) && typeof input.length === 'number'
+  }
+
+  /**
+   * @param {*} - The input value to convert to an array
+   * @returns {Array}
+   * @alias module:array-back
+   */
+  function arrayify (input) {
+    if (Array.isArray(input)) {
+      return input
+    }
+
+    if (input === undefined) {
+      return []
+    }
+
+    if (isArrayLike(input) || input instanceof Set) {
+      return Array.from(input)
+    }
+
+    return [input]
+  }
+
+  return arrayify;
+
+})));
diff --git a/igv_component/node_modules/command-line-usage/node_modules/array-back/index.mjs b/igv_component/node_modules/command-line-usage/node_modules/array-back/index.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..1090399e71097900dddd9c89e398f093a9136ada
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/node_modules/array-back/index.mjs
@@ -0,0 +1,62 @@
+/**
+ * Takes any input and guarantees an array back.
+ *
+ * - Converts array-like objects (e.g. `arguments`, `Set`) to a real array.
+ * - Converts `undefined` to an empty array.
+ * - Converts any another other, singular value (including `null`, objects and iterables other than `Set`) into an array containing that value.
+ * - Ignores input which is already an array.
+ *
+ * @module array-back
+ * @example
+ * > const arrayify = require('array-back')
+ *
+ * > arrayify(undefined)
+ * []
+ *
+ * > arrayify(null)
+ * [ null ]
+ *
+ * > arrayify(0)
+ * [ 0 ]
+ *
+ * > arrayify([ 1, 2 ])
+ * [ 1, 2 ]
+ *
+ * > arrayify(new Set([ 1, 2 ]))
+ * [ 1, 2 ]
+ *
+ * > function f(){ return arrayify(arguments); }
+ * > f(1,2,3)
+ * [ 1, 2, 3 ]
+ */
+
+function isObject (input) {
+  return typeof input === 'object' && input !== null
+}
+
+function isArrayLike (input) {
+  return isObject(input) && typeof input.length === 'number'
+}
+
+/**
+ * @param {*} - The input value to convert to an array
+ * @returns {Array}
+ * @alias module:array-back
+ */
+function arrayify (input) {
+  if (Array.isArray(input)) {
+    return input
+  }
+
+  if (input === undefined) {
+    return []
+  }
+
+  if (isArrayLike(input) || input instanceof Set) {
+    return Array.from(input)
+  }
+
+  return [input]
+}
+
+export default arrayify
diff --git a/igv_component/node_modules/command-line-usage/node_modules/array-back/package.json b/igv_component/node_modules/command-line-usage/node_modules/array-back/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..a677a103f1126f57dc99c79ee86b5c095347e9da
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/node_modules/array-back/package.json
@@ -0,0 +1,46 @@
+{
+  "name": "array-back",
+  "author": "Lloyd Brookes <75pound@gmail.com>",
+  "version": "4.0.2",
+  "description": "Guarantees an array back",
+  "repository": "https://github.com/75lb/array-back.git",
+  "license": "MIT",
+  "main": "dist/index.js",
+  "keywords": [
+    "to",
+    "convert",
+    "return",
+    "array",
+    "arrayify"
+  ],
+  "engines": {
+    "node": ">=8"
+  },
+  "files": [
+    "index.mjs",
+    "dist/index.js"
+  ],
+  "scripts": {
+    "test": "npm run dist && npm run test:esm && npm run test:web",
+    "test:esm": "esm-runner test.mjs",
+    "test:web": "web-runner test.mjs",
+    "docs": "jsdoc2md -t README.hbs index.mjs -c jsdoc.conf > README.md",
+    "dist": "rollup -f umd -n arrayBack -o dist/index.js index.mjs",
+    "cover": "c8 npm run test:esm && c8 report --reporter=text-lcov | coveralls"
+  },
+  "dependencies": {},
+  "devDependencies": {
+    "@test-runner/web": "^0.2.1",
+    "c8": "^6.0.1",
+    "coveralls": "^3.0.7",
+    "esm-runner": "^0.2.0",
+    "isomorphic-assert": "^0.1.1",
+    "jsdoc-to-markdown": "^5.0.2",
+    "rollup": "^1.26.5"
+  },
+  "standard": {
+    "ignore": [
+      "dist"
+    ]
+  }
+}
diff --git a/igv_component/node_modules/command-line-usage/node_modules/typical/LICENSE b/igv_component/node_modules/command-line-usage/node_modules/typical/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..700561a5e23e90694da01df6f8f09ee295bf9977
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/node_modules/typical/LICENSE
@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2014-19 Lloyd Brookes <75pound@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
diff --git a/igv_component/node_modules/command-line-usage/node_modules/typical/README.hbs b/igv_component/node_modules/command-line-usage/node_modules/typical/README.hbs
new file mode 100644
index 0000000000000000000000000000000000000000..bb092a1f3da6af5ad9c7f7a407b69b0f822d740d
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/node_modules/typical/README.hbs
@@ -0,0 +1,40 @@
+[![view on npm](http://img.shields.io/npm/v/typical.svg)](https://www.npmjs.org/package/typical)
+[![npm module downloads](http://img.shields.io/npm/dt/typical.svg)](https://www.npmjs.org/package/typical)
+[![Build Status](https://travis-ci.org/75lb/typical.svg?branch=master)](https://travis-ci.org/75lb/typical)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/typical/badge.svg?branch=master)](https://coveralls.io/github/75lb/typical?branch=master)
+[![Dependency Status](https://badgen.net/david/dep/75lb/typical)](https://david-dm.org/75lb/typical)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+{{>main}}
+
+## Load anywhere
+
+This library is compatible with Node.js, the Web and any style of module loader. It can be loaded anywhere, natively without transpilation.
+
+Node.js:
+
+```js
+const typical = require('typical')
+```
+
+Within Node.js with ECMAScript Module support enabled:
+
+```js
+import typical from 'typical'
+```
+
+Within a modern browser ECMAScript Module:
+
+```js
+import typical from './node_modules/typical/index.mjs'
+```
+
+Old browser (adds `window.typical`):
+
+```html
+<script nomodule src="./node_modules/typical/dist/index.js"></script>
+```
+
+* * *
+
+&copy; 2014-19 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/command-line-usage/node_modules/typical/README.md b/igv_component/node_modules/command-line-usage/node_modules/typical/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..6e3d513ceb7aea75148c8e5786fc4defbdd2839c
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/node_modules/typical/README.md
@@ -0,0 +1,302 @@
+[![view on npm](http://img.shields.io/npm/v/typical.svg)](https://www.npmjs.org/package/typical)
+[![npm module downloads](http://img.shields.io/npm/dt/typical.svg)](https://www.npmjs.org/package/typical)
+[![Build Status](https://travis-ci.org/75lb/typical.svg?branch=master)](https://travis-ci.org/75lb/typical)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/typical/badge.svg?branch=master)](https://coveralls.io/github/75lb/typical?branch=master)
+[![Dependency Status](https://badgen.net/david/dep/75lb/typical)](https://david-dm.org/75lb/typical)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+<a name="module_typical"></a>
+
+## typical
+Isomorphic, functional type-checking for Javascript.
+
+**Example**  
+```js
+const t = require('typical')
+const allDefined = array.every(t.isDefined)
+```
+
+* [typical](#module_typical)
+    * [.isNumber(n)](#module_typical.isNumber) ⇒ <code>boolean</code>
+    * [.isPlainObject(input)](#module_typical.isPlainObject) ⇒ <code>boolean</code>
+    * [.isArrayLike(input)](#module_typical.isArrayLike) ⇒ <code>boolean</code>
+    * [.isObject(input)](#module_typical.isObject) ⇒ <code>boolean</code>
+    * [.isDefined(input)](#module_typical.isDefined) ⇒ <code>boolean</code>
+    * [.isUndefined(input)](#module_typical.isUndefined) ⇒ <code>boolean</code>
+    * [.isNull(input)](#module_typical.isNull) ⇒ <code>boolean</code>
+    * [.isDefinedValue(input)](#module_typical.isDefinedValue) ⇒ <code>boolean</code>
+    * [.isClass(input)](#module_typical.isClass) ⇒ <code>boolean</code>
+    * [.isPrimitive(input)](#module_typical.isPrimitive) ⇒ <code>boolean</code>
+    * [.isPromise(input)](#module_typical.isPromise) ⇒ <code>boolean</code>
+    * [.isIterable(input)](#module_typical.isIterable) ⇒ <code>boolean</code>
+    * [.isString(input)](#module_typical.isString) ⇒ <code>boolean</code>
+    * [.isFunction(input)](#module_typical.isFunction) ⇒ <code>boolean</code>
+
+<a name="module_typical.isNumber"></a>
+
+### t.isNumber(n) ⇒ <code>boolean</code>
+Returns true if input is a number. It is a more reasonable alternative to `typeof n` which returns `number` for `NaN` and `Infinity`.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| n | <code>\*</code> | the input to test |
+
+**Example**  
+```js
+> t.isNumber(0)
+true
+> t.isNumber(1)
+true
+> t.isNumber(1.1)
+true
+> t.isNumber(0xff)
+true
+> t.isNumber(0644)
+true
+> t.isNumber(6.2e5)
+true
+> t.isNumber(NaN)
+false
+> t.isNumber(Infinity)
+false
+```
+<a name="module_typical.isPlainObject"></a>
+
+### t.isPlainObject(input) ⇒ <code>boolean</code>
+A plain object is a simple object literal, it is not an instance of a class. Returns true if the input `typeof` is `object` and directly decends from `Object`.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+**Example**  
+```js
+> t.isPlainObject({ something: 'one' })
+true
+> t.isPlainObject(new Date())
+false
+> t.isPlainObject([ 0, 1 ])
+false
+> t.isPlainObject(/test/)
+false
+> t.isPlainObject(1)
+false
+> t.isPlainObject('one')
+false
+> t.isPlainObject(null)
+false
+> t.isPlainObject((function * () {})())
+false
+> t.isPlainObject(function * () {})
+false
+```
+<a name="module_typical.isArrayLike"></a>
+
+### t.isArrayLike(input) ⇒ <code>boolean</code>
+An array-like value has all the properties of an array yet is not an array instance. An example is the `arguments` object. Returns `true`` if the input value is an object, not `null`` and has a `length` property set with a numeric value.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+**Example**  
+```js
+function sum(x, y){
+  console.log(t.isArrayLike(arguments))
+  // prints `true`
+}
+```
+<a name="module_typical.isObject"></a>
+
+### t.isObject(input) ⇒ <code>boolean</code>
+Returns true if the typeof input is `'object'` but not null.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isDefined"></a>
+
+### t.isDefined(input) ⇒ <code>boolean</code>
+Returns true if the input value is defined.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isUndefined"></a>
+
+### t.isUndefined(input) ⇒ <code>boolean</code>
+Returns true if the input value is undefined.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isNull"></a>
+
+### t.isNull(input) ⇒ <code>boolean</code>
+Returns true if the input value is null.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isDefinedValue"></a>
+
+### t.isDefinedValue(input) ⇒ <code>boolean</code>
+Returns true if the input value is not one of `undefined`, `null`, or `NaN`.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isClass"></a>
+
+### t.isClass(input) ⇒ <code>boolean</code>
+Returns true if the input value is an ES2015 `class`.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isPrimitive"></a>
+
+### t.isPrimitive(input) ⇒ <code>boolean</code>
+Returns true if the input is a string, number, symbol, boolean, null or undefined value.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isPromise"></a>
+
+### t.isPromise(input) ⇒ <code>boolean</code>
+Returns true if the input is a Promise.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isIterable"></a>
+
+### t.isIterable(input) ⇒ <code>boolean</code>
+Returns true if the input is an iterable (`Map`, `Set`, `Array`, Generator etc.).
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+**Example**  
+```js
+> t.isIterable('string')
+true
+> t.isIterable(new Map())
+true
+> t.isIterable([])
+true
+> t.isIterable((function * () {})())
+true
+> t.isIterable(Promise.resolve())
+false
+> t.isIterable(Promise)
+false
+> t.isIterable(true)
+false
+> t.isIterable({})
+false
+> t.isIterable(0)
+false
+> t.isIterable(1.1)
+false
+> t.isIterable(NaN)
+false
+> t.isIterable(Infinity)
+false
+> t.isIterable(function () {})
+false
+> t.isIterable(Date)
+false
+> t.isIterable()
+false
+> t.isIterable({ then: function () {} })
+false
+```
+<a name="module_typical.isString"></a>
+
+### t.isString(input) ⇒ <code>boolean</code>
+Returns true if the input value is a string. The equivalent of `typeof input === 'string'` for use in funcitonal contexts.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isFunction"></a>
+
+### t.isFunction(input) ⇒ <code>boolean</code>
+Returns true if the input value is a function. The equivalent of `typeof input === 'function'` for use in funcitonal contexts.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+
+## Load anywhere
+
+This library is compatible with Node.js, the Web and any style of module loader. It can be loaded anywhere, natively without transpilation.
+
+Node.js:
+
+```js
+const typical = require('typical')
+```
+
+Within Node.js with ECMAScript Module support enabled:
+
+```js
+import typical from 'typical'
+```
+
+Within a modern browser ECMAScript Module:
+
+```js
+import typical from './node_modules/typical/index.mjs'
+```
+
+Old browser (adds `window.typical`):
+
+```html
+<script nomodule src="./node_modules/typical/dist/index.js"></script>
+```
+
+* * *
+
+&copy; 2014-19 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/command-line-usage/node_modules/typical/dist/index.js b/igv_component/node_modules/command-line-usage/node_modules/typical/dist/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..ed8b168638511d4db203730c6a592e2aa1f622a3
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/node_modules/typical/dist/index.js
@@ -0,0 +1,295 @@
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+  (global = global || self, factory(global.typical = {}));
+}(this, function (exports) { 'use strict';
+
+  /**
+   * Isomorphic, functional type-checking for Javascript.
+   * @module typical
+   * @typicalname t
+   * @example
+   * const t = require('typical')
+   * const allDefined = array.every(t.isDefined)
+   */
+
+  /**
+   * Returns true if input is a number. It is a more reasonable alternative to `typeof n` which returns `number` for `NaN` and `Infinity`.
+   *
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   * @example
+   * > t.isNumber(0)
+   * true
+   * > t.isNumber(1)
+   * true
+   * > t.isNumber(1.1)
+   * true
+   * > t.isNumber(0xff)
+   * true
+   * > t.isNumber(0644)
+   * true
+   * > t.isNumber(6.2e5)
+   * true
+   * > t.isNumber(NaN)
+   * false
+   * > t.isNumber(Infinity)
+   * false
+   */
+  function isNumber (n) {
+    return !isNaN(parseFloat(n)) && isFinite(n)
+  }
+
+  /**
+   * A plain object is a simple object literal, it is not an instance of a class. Returns true if the input `typeof` is `object` and directly decends from `Object`.
+   *
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   * @example
+   * > t.isPlainObject({ something: 'one' })
+   * true
+   * > t.isPlainObject(new Date())
+   * false
+   * > t.isPlainObject([ 0, 1 ])
+   * false
+   * > t.isPlainObject(/test/)
+   * false
+   * > t.isPlainObject(1)
+   * false
+   * > t.isPlainObject('one')
+   * false
+   * > t.isPlainObject(null)
+   * false
+   * > t.isPlainObject((function * () {})())
+   * false
+   * > t.isPlainObject(function * () {})
+   * false
+   */
+  function isPlainObject (input) {
+    return input !== null && typeof input === 'object' && input.constructor === Object
+  }
+
+  /**
+   * An array-like value has all the properties of an array yet is not an array instance. An example is the `arguments` object. Returns `true`` if the input value is an object, not `null`` and has a `length` property set with a numeric value.
+   *
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   * @example
+   * function sum(x, y){
+   *   console.log(t.isArrayLike(arguments))
+   *   // prints `true`
+   * }
+   */
+  function isArrayLike (input) {
+    return isObject(input) && typeof input.length === 'number'
+  }
+
+  /**
+   * Returns true if the typeof input is `'object'` but not null.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isObject (input) {
+    return typeof input === 'object' && input !== null
+  }
+
+  /**
+   * Returns true if the input value is defined.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isDefined (input) {
+    return typeof input !== 'undefined'
+  }
+
+  /**
+   * Returns true if the input value is undefined.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isUndefined (input) {
+    return !isDefined(input)
+  }
+
+  /**
+   * Returns true if the input value is null.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isNull (input) {
+   return input === null
+  }
+
+  /**
+   * Returns true if the input value is both defined and not null.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isDefinedValue (input) {
+   return isDefined(input) && !isNull(input) && !Number.isNaN(input)
+  }
+
+  /**
+   * Returns true if the input value is an ES2015 `class`.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isClass (input) {
+    if (typeof input === 'function') {
+      return /^class /.test(Function.prototype.toString.call(input))
+    } else {
+      return false
+    }
+  }
+
+  /**
+   * Returns true if the input is a string, number, symbol, boolean, null or undefined value.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isPrimitive (input) {
+    if (input === null) return true
+    switch (typeof input) {
+      case 'string':
+      case 'number':
+      case 'symbol':
+      case 'undefined':
+      case 'boolean':
+        return true
+      default:
+        return false
+    }
+  }
+
+  /**
+   * Returns true if the input is a Promise.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isPromise (input) {
+    if (input) {
+      const isPromise = isDefined(Promise) && input instanceof Promise;
+      const isThenable = input.then && typeof input.then === 'function';
+      return !!(isPromise || isThenable)
+    } else {
+      return false
+    }
+  }
+
+  /**
+   * Returns true if the input is an iterable (`Map`, `Set`, `Array`, Generator etc.).
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   * @example
+   * > t.isIterable('string')
+   * true
+   * > t.isIterable(new Map())
+   * true
+   * > t.isIterable([])
+   * true
+   * > t.isIterable((function * () {})())
+   * true
+   * > t.isIterable(Promise.resolve())
+   * false
+   * > t.isIterable(Promise)
+   * false
+   * > t.isIterable(true)
+   * false
+   * > t.isIterable({})
+   * false
+   * > t.isIterable(0)
+   * false
+   * > t.isIterable(1.1)
+   * false
+   * > t.isIterable(NaN)
+   * false
+   * > t.isIterable(Infinity)
+   * false
+   * > t.isIterable(function () {})
+   * false
+   * > t.isIterable(Date)
+   * false
+   * > t.isIterable()
+   * false
+   * > t.isIterable({ then: function () {} })
+   * false
+   */
+  function isIterable (input) {
+    if (input === null || !isDefined(input)) {
+      return false
+    } else {
+      return (
+        typeof input[Symbol.iterator] === 'function' ||
+        typeof input[Symbol.asyncIterator] === 'function'
+      )
+    }
+  }
+
+  /**
+   * Returns true if the input value is a string. The equivalent of `typeof input === 'string'` for use in funcitonal contexts.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isString (input) {
+    return typeof input === 'string'
+  }
+
+  /**
+   * Returns true if the input value is a function. The equivalent of `typeof input === 'function'` for use in funcitonal contexts.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isFunction (input) {
+    return typeof input === 'function'
+  }
+
+  var index = {
+    isNumber,
+    isPlainObject,
+    isArrayLike,
+    isObject,
+    isDefined,
+    isUndefined,
+    isNull,
+    isDefinedValue,
+    isClass,
+    isPrimitive,
+    isPromise,
+    isIterable,
+    isString,
+    isFunction
+  };
+
+  exports.default = index;
+  exports.isArrayLike = isArrayLike;
+  exports.isClass = isClass;
+  exports.isDefined = isDefined;
+  exports.isDefinedValue = isDefinedValue;
+  exports.isFunction = isFunction;
+  exports.isIterable = isIterable;
+  exports.isNull = isNull;
+  exports.isNumber = isNumber;
+  exports.isObject = isObject;
+  exports.isPlainObject = isPlainObject;
+  exports.isPrimitive = isPrimitive;
+  exports.isPromise = isPromise;
+  exports.isString = isString;
+  exports.isUndefined = isUndefined;
+
+  Object.defineProperty(exports, '__esModule', { value: true });
+
+}));
diff --git a/igv_component/node_modules/command-line-usage/node_modules/typical/index.mjs b/igv_component/node_modules/command-line-usage/node_modules/typical/index.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..d3468a97fb50bc919fa70b7ff0d6b5e5ba384216
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/node_modules/typical/index.mjs
@@ -0,0 +1,269 @@
+/**
+ * Isomorphic, functional type-checking for Javascript.
+ * @module typical
+ * @typicalname t
+ * @example
+ * const t = require('typical')
+ * const allDefined = array.every(t.isDefined)
+ */
+
+/**
+ * Returns true if input is a number. It is a more reasonable alternative to `typeof n` which returns `number` for `NaN` and `Infinity`.
+ *
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isNumber(0)
+ * true
+ * > t.isNumber(1)
+ * true
+ * > t.isNumber(1.1)
+ * true
+ * > t.isNumber(0xff)
+ * true
+ * > t.isNumber(0644)
+ * true
+ * > t.isNumber(6.2e5)
+ * true
+ * > t.isNumber(NaN)
+ * false
+ * > t.isNumber(Infinity)
+ * false
+ */
+export function isNumber (n) {
+  return !isNaN(parseFloat(n)) && isFinite(n)
+}
+
+/**
+ * A plain object is a simple object literal, it is not an instance of a class. Returns true if the input `typeof` is `object` and directly decends from `Object`.
+ *
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isPlainObject({ something: 'one' })
+ * true
+ * > t.isPlainObject(new Date())
+ * false
+ * > t.isPlainObject([ 0, 1 ])
+ * false
+ * > t.isPlainObject(/test/)
+ * false
+ * > t.isPlainObject(1)
+ * false
+ * > t.isPlainObject('one')
+ * false
+ * > t.isPlainObject(null)
+ * false
+ * > t.isPlainObject((function * () {})())
+ * false
+ * > t.isPlainObject(function * () {})
+ * false
+ */
+export function isPlainObject (input) {
+  return input !== null && typeof input === 'object' && input.constructor === Object
+}
+
+/**
+ * An array-like value has all the properties of an array yet is not an array instance. An example is the `arguments` object. Returns `true`` if the input value is an object, not `null`` and has a `length` property set with a numeric value.
+ *
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * function sum(x, y){
+ *   console.log(t.isArrayLike(arguments))
+ *   // prints `true`
+ * }
+ */
+export function isArrayLike (input) {
+  return isObject(input) && typeof input.length === 'number'
+}
+
+/**
+ * Returns true if the typeof input is `'object'` but not null.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isObject (input) {
+  return typeof input === 'object' && input !== null
+}
+
+/**
+ * Returns true if the input value is defined.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isDefined (input) {
+  return typeof input !== 'undefined'
+}
+
+/**
+ * Returns true if the input value is undefined.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isUndefined (input) {
+  return !isDefined(input)
+}
+
+/**
+ * Returns true if the input value is null.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isNull (input) {
+ return input === null
+}
+
+/**
+ * Returns true if the input value is not one of `undefined`, `null`, or `NaN`.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isDefinedValue (input) {
+ return isDefined(input) && !isNull(input) && !Number.isNaN(input)
+}
+
+/**
+ * Returns true if the input value is an ES2015 `class`.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isClass (input) {
+  if (typeof input === 'function') {
+    return /^class /.test(Function.prototype.toString.call(input))
+  } else {
+    return false
+  }
+}
+
+/**
+ * Returns true if the input is a string, number, symbol, boolean, null or undefined value.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isPrimitive (input) {
+  if (input === null) return true
+  switch (typeof input) {
+    case 'string':
+    case 'number':
+    case 'symbol':
+    case 'undefined':
+    case 'boolean':
+      return true
+    default:
+      return false
+  }
+}
+
+/**
+ * Returns true if the input is a Promise.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isPromise (input) {
+  if (input) {
+    const isPromise = isDefined(Promise) && input instanceof Promise
+    const isThenable = input.then && typeof input.then === 'function'
+    return !!(isPromise || isThenable)
+  } else {
+    return false
+  }
+}
+
+/**
+ * Returns true if the input is an iterable (`Map`, `Set`, `Array`, Generator etc.).
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isIterable('string')
+ * true
+ * > t.isIterable(new Map())
+ * true
+ * > t.isIterable([])
+ * true
+ * > t.isIterable((function * () {})())
+ * true
+ * > t.isIterable(Promise.resolve())
+ * false
+ * > t.isIterable(Promise)
+ * false
+ * > t.isIterable(true)
+ * false
+ * > t.isIterable({})
+ * false
+ * > t.isIterable(0)
+ * false
+ * > t.isIterable(1.1)
+ * false
+ * > t.isIterable(NaN)
+ * false
+ * > t.isIterable(Infinity)
+ * false
+ * > t.isIterable(function () {})
+ * false
+ * > t.isIterable(Date)
+ * false
+ * > t.isIterable()
+ * false
+ * > t.isIterable({ then: function () {} })
+ * false
+ */
+export function isIterable (input) {
+  if (input === null || !isDefined(input)) {
+    return false
+  } else {
+    return (
+      typeof input[Symbol.iterator] === 'function' ||
+      typeof input[Symbol.asyncIterator] === 'function'
+    )
+  }
+}
+
+/**
+ * Returns true if the input value is a string. The equivalent of `typeof input === 'string'` for use in funcitonal contexts.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isString (input) {
+  return typeof input === 'string'
+}
+
+/**
+ * Returns true if the input value is a function. The equivalent of `typeof input === 'function'` for use in funcitonal contexts.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isFunction (input) {
+  return typeof input === 'function'
+}
+
+export default {
+  isNumber,
+  isPlainObject,
+  isArrayLike,
+  isObject,
+  isDefined,
+  isUndefined,
+  isNull,
+  isDefinedValue,
+  isClass,
+  isPrimitive,
+  isPromise,
+  isIterable,
+  isString,
+  isFunction
+}
diff --git a/igv_component/node_modules/command-line-usage/node_modules/typical/package.json b/igv_component/node_modules/command-line-usage/node_modules/typical/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..d664f1bd14c678bbde674c8e4e7a5efc6ab77b6e
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/node_modules/typical/package.json
@@ -0,0 +1,63 @@
+{
+  "name": "typical",
+  "author": "Lloyd Brookes <75pound@gmail.com>",
+  "version": "5.2.0",
+  "description": "Isomorphic, functional type-checking for Javascript",
+  "repository": "https://github.com/75lb/typical",
+  "license": "MIT",
+  "main": "dist/index.js",
+  "keywords": [
+    "type",
+    "checking",
+    "check",
+    "value",
+    "valid",
+    "is",
+    "number",
+    "object",
+    "plainobject",
+    "array",
+    "like",
+    "defined",
+    "string",
+    "boolean",
+    "function",
+    "promise",
+    "iterable",
+    "class",
+    "primitive",
+    "isstring",
+    "isclass",
+    "isiterable",
+    "isdefined",
+    "isobject",
+    "isomorphic"
+  ],
+  "engines": {
+    "node": ">=8"
+  },
+  "scripts": {
+    "test": "npm run dist && npm run test:js && npm run test:esm",
+    "test:all": "npm run test:js && npm run test:esm && npm run test:web",
+    "test:js": "rollup test/*.mjs -f cjs -d tmp/test -e assert && test-runner tmp/test/test*.js",
+    "test:esm": "esm-runner test/*.mjs",
+    "test:web": "web-runner test/test.mjs",
+    "test:v8": "rollup test/test.mjs test/test-default.mjs -f cjs -d tmp/testv8 && test-runner tmp/testv8/test*.js",
+    "dist": "rollup index.mjs -f umd -n typical -o dist/index.js --exports named",
+    "docs": "jsdoc2md -c jsdoc.conf -t README.hbs index.mjs > README.md; echo",
+    "cover": "nyc npm test && nyc report --reporter=text-lcov | coveralls"
+  },
+  "devDependencies": {
+    "coveralls": "^3.0.7",
+    "esm-runner": "^0.1.5",
+    "jsdoc-to-markdown": "^5.0.2",
+    "nyc": "^14.1.1",
+    "rollup": "^1.25.1",
+    "test-object-model": "^0.4.4",
+    "test-runner": "^0.6.0"
+  },
+  "files": [
+    "index.mjs",
+    "dist/index.js"
+  ]
+}
diff --git a/igv_component/node_modules/command-line-usage/package.json b/igv_component/node_modules/command-line-usage/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..7ecc6e01468707b0cda3fa10be4e918b11a95eb3
--- /dev/null
+++ b/igv_component/node_modules/command-line-usage/package.json
@@ -0,0 +1,41 @@
+{
+  "name": "command-line-usage",
+  "author": "Lloyd Brookes <75pound@gmail.com>",
+  "version": "6.1.3",
+  "description": "Generates command-line usage information",
+  "repository": "https://github.com/75lb/command-line-usage",
+  "license": "MIT",
+  "files": [
+    "lib/**/*.js",
+    "index.js"
+  ],
+  "keywords": [
+    "terminal",
+    "command line",
+    "usage",
+    "generator"
+  ],
+  "engines": {
+    "node": ">=8.0.0"
+  },
+  "scripts": {
+    "docs": "jsdoc2md --no-gfm index.js lib/**/*.js > doc/api.md; echo",
+    "test": "test-runner test/*.js",
+    "cover": "nyc npm test && nyc report --reporter=text-lcov | coveralls"
+  },
+  "dependencies": {
+    "array-back": "^4.0.2",
+    "chalk": "^2.4.2",
+    "table-layout": "^1.0.2",
+    "typical": "^5.2.0"
+  },
+  "devDependencies": {
+    "jsdoc-to-markdown": "^7.1.1",
+    "test-runner": "^0.6.3"
+  },
+  "standard": {
+    "ignore": [
+      "example"
+    ]
+  }
+}
diff --git a/igv_component/node_modules/deep-extend/CHANGELOG.md b/igv_component/node_modules/deep-extend/CHANGELOG.md
new file mode 100644
index 0000000000000000000000000000000000000000..dd13ec1311b2b61bcd977df878ade9ca3b233621
--- /dev/null
+++ b/igv_component/node_modules/deep-extend/CHANGELOG.md
@@ -0,0 +1,46 @@
+Changelog
+=========
+
+v0.6.0
+------
+
+- Updated "devDependencies" versions to fix vulnerability alerts
+- Dropped support of io.js and node.js v0.12.x and lower since new versions of
+  "devDependencies" couldn't work with those old node.js versions
+  (minimal supported version of node.js now is v4.0.0)
+
+v0.5.1
+------
+
+- Fix prototype pollution vulnerability (thanks to @mwakerman for the PR)
+- Avoid using deprecated Buffer API (thanks to @ChALkeR for the PR)
+
+v0.5.0
+------
+
+- Auto-testing provided by Travis CI;
+- Support older Node.JS versions (`v0.11.x` and `v0.10.x`);
+- Removed tests files from npm package.
+
+v0.4.2
+------
+
+- Fix for `null` as an argument.
+
+v0.4.1
+------
+
+- Removed test code from <b>npm</b> package
+  ([see pull request #21](https://github.com/unclechu/node-deep-extend/pull/21));
+- Increased minimal version of Node from `0.4.0` to `0.12.0`
+  (because can't run tests on lesser version anyway).
+
+v0.4.0
+------
+
+- **WARNING!** Broken backward compatibility with `v0.3.x`;
+- Fixed bug with extending arrays instead of cloning;
+- Deep cloning for arrays;
+- Check for own property;
+- Fixed some documentation issues;
+- Strict JS mode.
diff --git a/igv_component/node_modules/deep-extend/LICENSE b/igv_component/node_modules/deep-extend/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..5c58916f2fd71a228ec8cbaf2234f93dd61f71a5
--- /dev/null
+++ b/igv_component/node_modules/deep-extend/LICENSE
@@ -0,0 +1,20 @@
+The MIT License (MIT)
+
+Copyright (c) 2013-2018, Viacheslav Lotsmanov
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/igv_component/node_modules/deep-extend/README.md b/igv_component/node_modules/deep-extend/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..67c7fc085903bc137e3b5a626602be9afd385553
--- /dev/null
+++ b/igv_component/node_modules/deep-extend/README.md
@@ -0,0 +1,91 @@
+Deep Extend
+===========
+
+Recursive object extending.
+
+[![Build Status](https://api.travis-ci.org/unclechu/node-deep-extend.svg?branch=master)](https://travis-ci.org/unclechu/node-deep-extend)
+
+[![NPM](https://nodei.co/npm/deep-extend.png?downloads=true&downloadRank=true&stars=true)](https://nodei.co/npm/deep-extend/)
+
+Install
+-------
+
+```bash
+$ npm install deep-extend
+```
+
+Usage
+-----
+
+```javascript
+var deepExtend = require('deep-extend');
+var obj1 = {
+  a: 1,
+  b: 2,
+  d: {
+    a: 1,
+    b: [],
+    c: { test1: 123, test2: 321 }
+  },
+  f: 5,
+  g: 123,
+  i: 321,
+  j: [1, 2]
+};
+var obj2 = {
+  b: 3,
+  c: 5,
+  d: {
+    b: { first: 'one', second: 'two' },
+    c: { test2: 222 }
+  },
+  e: { one: 1, two: 2 },
+  f: [],
+  g: (void 0),
+  h: /abc/g,
+  i: null,
+  j: [3, 4]
+};
+
+deepExtend(obj1, obj2);
+
+console.log(obj1);
+/*
+{ a: 1,
+  b: 3,
+  d:
+   { a: 1,
+     b: { first: 'one', second: 'two' },
+     c: { test1: 123, test2: 222 } },
+  f: [],
+  g: undefined,
+  c: 5,
+  e: { one: 1, two: 2 },
+  h: /abc/g,
+  i: null,
+  j: [3, 4] }
+*/
+```
+
+Unit testing
+------------
+
+```bash
+$ npm test
+```
+
+Changelog
+---------
+
+[CHANGELOG.md](./CHANGELOG.md)
+
+Any issues?
+-----------
+
+Please, report about issues
+[here](https://github.com/unclechu/node-deep-extend/issues).
+
+License
+-------
+
+[MIT](./LICENSE)
diff --git a/igv_component/node_modules/deep-extend/index.js b/igv_component/node_modules/deep-extend/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..762d81e954e161b33e4937a1b6676f28f1cc360a
--- /dev/null
+++ b/igv_component/node_modules/deep-extend/index.js
@@ -0,0 +1 @@
+module.exports = require('./lib/deep-extend');
diff --git a/igv_component/node_modules/deep-extend/lib/deep-extend.js b/igv_component/node_modules/deep-extend/lib/deep-extend.js
new file mode 100644
index 0000000000000000000000000000000000000000..651fd8d3e1a6933dbfbcc851317041835dea83d4
--- /dev/null
+++ b/igv_component/node_modules/deep-extend/lib/deep-extend.js
@@ -0,0 +1,150 @@
+/*!
+ * @description Recursive object extending
+ * @author Viacheslav Lotsmanov <lotsmanov89@gmail.com>
+ * @license MIT
+ *
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2013-2018 Viacheslav Lotsmanov
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy of
+ * this software and associated documentation files (the "Software"), to deal in
+ * the Software without restriction, including without limitation the rights to
+ * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+ * the Software, and to permit persons to whom the Software is furnished to do so,
+ * subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in all
+ * copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+ * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+ * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+ * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+ * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ */
+
+'use strict';
+
+function isSpecificValue(val) {
+	return (
+		val instanceof Buffer
+		|| val instanceof Date
+		|| val instanceof RegExp
+	) ? true : false;
+}
+
+function cloneSpecificValue(val) {
+	if (val instanceof Buffer) {
+		var x = Buffer.alloc
+			? Buffer.alloc(val.length)
+			: new Buffer(val.length);
+		val.copy(x);
+		return x;
+	} else if (val instanceof Date) {
+		return new Date(val.getTime());
+	} else if (val instanceof RegExp) {
+		return new RegExp(val);
+	} else {
+		throw new Error('Unexpected situation');
+	}
+}
+
+/**
+ * Recursive cloning array.
+ */
+function deepCloneArray(arr) {
+	var clone = [];
+	arr.forEach(function (item, index) {
+		if (typeof item === 'object' && item !== null) {
+			if (Array.isArray(item)) {
+				clone[index] = deepCloneArray(item);
+			} else if (isSpecificValue(item)) {
+				clone[index] = cloneSpecificValue(item);
+			} else {
+				clone[index] = deepExtend({}, item);
+			}
+		} else {
+			clone[index] = item;
+		}
+	});
+	return clone;
+}
+
+function safeGetProperty(object, property) {
+	return property === '__proto__' ? undefined : object[property];
+}
+
+/**
+ * Extening object that entered in first argument.
+ *
+ * Returns extended object or false if have no target object or incorrect type.
+ *
+ * If you wish to clone source object (without modify it), just use empty new
+ * object as first argument, like this:
+ *   deepExtend({}, yourObj_1, [yourObj_N]);
+ */
+var deepExtend = module.exports = function (/*obj_1, [obj_2], [obj_N]*/) {
+	if (arguments.length < 1 || typeof arguments[0] !== 'object') {
+		return false;
+	}
+
+	if (arguments.length < 2) {
+		return arguments[0];
+	}
+
+	var target = arguments[0];
+
+	// convert arguments to array and cut off target object
+	var args = Array.prototype.slice.call(arguments, 1);
+
+	var val, src, clone;
+
+	args.forEach(function (obj) {
+		// skip argument if isn't an object, is null, or is an array
+		if (typeof obj !== 'object' || obj === null || Array.isArray(obj)) {
+			return;
+		}
+
+		Object.keys(obj).forEach(function (key) {
+			src = safeGetProperty(target, key); // source value
+			val = safeGetProperty(obj, key); // new value
+
+			// recursion prevention
+			if (val === target) {
+				return;
+
+			/**
+			 * if new value isn't object then just overwrite by new value
+			 * instead of extending.
+			 */
+			} else if (typeof val !== 'object' || val === null) {
+				target[key] = val;
+				return;
+
+			// just clone arrays (and recursive clone objects inside)
+			} else if (Array.isArray(val)) {
+				target[key] = deepCloneArray(val);
+				return;
+
+			// custom cloning and overwrite for specific objects
+			} else if (isSpecificValue(val)) {
+				target[key] = cloneSpecificValue(val);
+				return;
+
+			// overwrite by new value if source isn't object or array
+			} else if (typeof src !== 'object' || src === null || Array.isArray(src)) {
+				target[key] = deepExtend({}, val);
+				return;
+
+			// source value and new value is objects both, extending...
+			} else {
+				target[key] = deepExtend(src, val);
+				return;
+			}
+		});
+	});
+
+	return target;
+};
diff --git a/igv_component/node_modules/deep-extend/package.json b/igv_component/node_modules/deep-extend/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..5f2195ff93a611187019edf4e6002ce88e41f137
--- /dev/null
+++ b/igv_component/node_modules/deep-extend/package.json
@@ -0,0 +1,62 @@
+{
+  "name": "deep-extend",
+  "description": "Recursive object extending",
+  "license": "MIT",
+  "version": "0.6.0",
+  "homepage": "https://github.com/unclechu/node-deep-extend",
+  "keywords": [
+    "deep-extend",
+    "extend",
+    "deep",
+    "recursive",
+    "xtend",
+    "clone",
+    "merge",
+    "json"
+  ],
+  "licenses": [
+    {
+      "type": "MIT",
+      "url": "https://raw.githubusercontent.com/unclechu/node-deep-extend/master/LICENSE"
+    }
+  ],
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/unclechu/node-deep-extend.git"
+  },
+  "author": "Viacheslav Lotsmanov <lotsmanov89@gmail.com>",
+  "bugs": "https://github.com/unclechu/node-deep-extend/issues",
+  "contributors": [
+    {
+      "name": "Romain Prieto",
+      "url": "https://github.com/rprieto"
+    },
+    {
+      "name": "Max Maximov",
+      "url": "https://github.com/maxmaximov"
+    },
+    {
+      "name": "Marshall Bowers",
+      "url": "https://github.com/maxdeviant"
+    },
+    {
+      "name": "Misha Wakerman",
+      "url": "https://github.com/mwakerman"
+    }
+  ],
+  "main": "lib/deep-extend.js",
+  "engines": {
+    "node": ">=4.0.0"
+  },
+  "scripts": {
+    "test": "./node_modules/.bin/mocha"
+  },
+  "devDependencies": {
+    "mocha": "5.2.0",
+    "should": "13.2.1"
+  },
+  "files": [
+    "index.js",
+    "lib/"
+  ]
+}
diff --git a/igv_component/node_modules/escape-string-regexp/index.js b/igv_component/node_modules/escape-string-regexp/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..7834bf9b24c481efa379fc07679c2d8e3ba85247
--- /dev/null
+++ b/igv_component/node_modules/escape-string-regexp/index.js
@@ -0,0 +1,11 @@
+'use strict';
+
+var matchOperatorsRe = /[|\\{}()[\]^$+*?.]/g;
+
+module.exports = function (str) {
+	if (typeof str !== 'string') {
+		throw new TypeError('Expected a string');
+	}
+
+	return str.replace(matchOperatorsRe, '\\$&');
+};
diff --git a/igv_component/node_modules/escape-string-regexp/license b/igv_component/node_modules/escape-string-regexp/license
new file mode 100644
index 0000000000000000000000000000000000000000..654d0bfe943437d43242325b1fbcff5f400d84ee
--- /dev/null
+++ b/igv_component/node_modules/escape-string-regexp/license
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/igv_component/node_modules/escape-string-regexp/package.json b/igv_component/node_modules/escape-string-regexp/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..f307df34a232c01007db4b221a3af9370f07b787
--- /dev/null
+++ b/igv_component/node_modules/escape-string-regexp/package.json
@@ -0,0 +1,41 @@
+{
+  "name": "escape-string-regexp",
+  "version": "1.0.5",
+  "description": "Escape RegExp special characters",
+  "license": "MIT",
+  "repository": "sindresorhus/escape-string-regexp",
+  "author": {
+    "name": "Sindre Sorhus",
+    "email": "sindresorhus@gmail.com",
+    "url": "sindresorhus.com"
+  },
+  "maintainers": [
+    "Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)",
+    "Joshua Boy Nicolai Appelman <joshua@jbna.nl> (jbna.nl)"
+  ],
+  "engines": {
+    "node": ">=0.8.0"
+  },
+  "scripts": {
+    "test": "xo && ava"
+  },
+  "files": [
+    "index.js"
+  ],
+  "keywords": [
+    "escape",
+    "regex",
+    "regexp",
+    "re",
+    "regular",
+    "expression",
+    "string",
+    "str",
+    "special",
+    "characters"
+  ],
+  "devDependencies": {
+    "ava": "*",
+    "xo": "*"
+  }
+}
diff --git a/igv_component/node_modules/escape-string-regexp/readme.md b/igv_component/node_modules/escape-string-regexp/readme.md
new file mode 100644
index 0000000000000000000000000000000000000000..87ac82d5ef8bc9515f709cf0dffe4c7a6fb84f93
--- /dev/null
+++ b/igv_component/node_modules/escape-string-regexp/readme.md
@@ -0,0 +1,27 @@
+# escape-string-regexp [![Build Status](https://travis-ci.org/sindresorhus/escape-string-regexp.svg?branch=master)](https://travis-ci.org/sindresorhus/escape-string-regexp)
+
+> Escape RegExp special characters
+
+
+## Install
+
+```
+$ npm install --save escape-string-regexp
+```
+
+
+## Usage
+
+```js
+const escapeStringRegexp = require('escape-string-regexp');
+
+const escapedString = escapeStringRegexp('how much $ for a unicorn?');
+//=> 'how much \$ for a unicorn\?'
+
+new RegExp(escapedString);
+```
+
+
+## License
+
+MIT © [Sindre Sorhus](http://sindresorhus.com)
diff --git a/igv_component/node_modules/find-replace/LICENSE b/igv_component/node_modules/find-replace/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..203018f1e665160f2a3a51ff1fe91e9717af0b78
--- /dev/null
+++ b/igv_component/node_modules/find-replace/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015-19 Lloyd Brookes <75pound@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/igv_component/node_modules/find-replace/README.hbs b/igv_component/node_modules/find-replace/README.hbs
new file mode 100644
index 0000000000000000000000000000000000000000..76bac7cf5c60035d0c673427a5031765b3d6ff43
--- /dev/null
+++ b/igv_component/node_modules/find-replace/README.hbs
@@ -0,0 +1,11 @@
+[![view on npm](http://img.shields.io/npm/v/find-replace.svg)](https://www.npmjs.org/package/find-replace)
+[![npm module downloads](http://img.shields.io/npm/dt/find-replace.svg)](https://www.npmjs.org/package/find-replace)
+[![Build Status](https://travis-ci.org/75lb/find-replace.svg?branch=master)](https://travis-ci.org/75lb/find-replace)
+[![Dependency Status](https://david-dm.org/75lb/find-replace.svg)](https://david-dm.org/75lb/find-replace)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+{{>main}}
+
+* * *
+
+&copy; 2015-19 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/find-replace/README.md b/igv_component/node_modules/find-replace/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..b61b4e3cecc9779d383ddffb9ec2ced44ad9acac
--- /dev/null
+++ b/igv_component/node_modules/find-replace/README.md
@@ -0,0 +1,43 @@
+[![view on npm](http://img.shields.io/npm/v/find-replace.svg)](https://www.npmjs.org/package/find-replace)
+[![npm module downloads](http://img.shields.io/npm/dt/find-replace.svg)](https://www.npmjs.org/package/find-replace)
+[![Build Status](https://travis-ci.org/75lb/find-replace.svg?branch=master)](https://travis-ci.org/75lb/find-replace)
+[![Dependency Status](https://david-dm.org/75lb/find-replace.svg)](https://david-dm.org/75lb/find-replace)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+<a name="module_find-replace"></a>
+
+## find-replace
+Find and either replace or remove items in an array.
+
+**Example**  
+```js
+> const findReplace = require('find-replace')
+> const numbers = [ 1, 2, 3]
+
+> findReplace(numbers, n => n === 2, 'two')
+[ 1, 'two', 3 ]
+
+> findReplace(numbers, n => n === 2, [ 'two', 'zwei' ])
+[ 1, [ 'two', 'zwei' ], 3 ]
+
+> findReplace(numbers, n => n === 2, 'two', 'zwei')
+[ 1, 'two', 'zwei', 3 ]
+
+> findReplace(numbers, n => n === 2) // no replacement, so remove
+[ 1, 3 ]
+```
+<a name="exp_module_find-replace--findReplace"></a>
+
+### findReplace(array, testFn, [...replaceWith]) ⇒ <code>array</code> ⏏
+**Kind**: Exported function  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| array | <code>array</code> | The input array |
+| testFn | <code>testFn</code> | A predicate function which, if returning `true` causes the current item to be operated on. |
+| [...replaceWith] | <code>any</code> | If specified, found values will be replaced with these values, else removed. |
+
+
+* * *
+
+&copy; 2015-19 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/find-replace/dist/index.js b/igv_component/node_modules/find-replace/dist/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..7203b916f36dc4541c133f32830250d81a50b93a
--- /dev/null
+++ b/igv_component/node_modules/find-replace/dist/index.js
@@ -0,0 +1,124 @@
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global = global || self, global.findReplace = factory());
+}(this, function () { 'use strict';
+
+  /**
+   * Takes any input and guarantees an array back.
+   *
+   * - converts array-like objects (e.g. `arguments`) to a real array
+   * - converts `undefined` to an empty array
+   * - converts any another other, singular value (including `null`) into an array containing that value
+   * - ignores input which is already an array
+   *
+   * @module array-back
+   * @example
+   * > const arrayify = require('array-back')
+   *
+   * > arrayify(undefined)
+   * []
+   *
+   * > arrayify(null)
+   * [ null ]
+   *
+   * > arrayify(0)
+   * [ 0 ]
+   *
+   * > arrayify([ 1, 2 ])
+   * [ 1, 2 ]
+   *
+   * > function f(){ return arrayify(arguments); }
+   * > f(1,2,3)
+   * [ 1, 2, 3 ]
+   */
+
+  function isObject (input) {
+    return typeof input === 'object' && input !== null
+  }
+
+  function isArrayLike (input) {
+    return isObject(input) && typeof input.length === 'number'
+  }
+
+  /**
+   * @param {*} - the input value to convert to an array
+   * @returns {Array}
+   * @alias module:array-back
+   */
+  function arrayify (input) {
+    if (Array.isArray(input)) {
+      return input
+    } else {
+      if (input === undefined) {
+        return []
+      } else if (isArrayLike(input)) {
+        return Array.prototype.slice.call(input)
+      } else {
+        return [ input ]
+      }
+    }
+  }
+
+  /**
+   * Find and either replace or remove items in an array.
+   *
+   * @module find-replace
+   * @example
+   * > const findReplace = require('find-replace')
+   * > const numbers = [ 1, 2, 3]
+   *
+   * > findReplace(numbers, n => n === 2, 'two')
+   * [ 1, 'two', 3 ]
+   *
+   * > findReplace(numbers, n => n === 2, [ 'two', 'zwei' ])
+   * [ 1, [ 'two', 'zwei' ], 3 ]
+   *
+   * > findReplace(numbers, n => n === 2, 'two', 'zwei')
+   * [ 1, 'two', 'zwei', 3 ]
+   *
+   * > findReplace(numbers, n => n === 2) // no replacement, so remove
+   * [ 1, 3 ]
+   */
+
+  /**
+   * @param {array} - The input array
+   * @param {testFn} - A predicate function which, if returning `true` causes the current item to be operated on.
+   * @param [replaceWith] {...any} - If specified, found values will be replaced with these values, else removed.
+   * @returns {array}
+   * @alias module:find-replace
+   */
+  function findReplace (array, testFn) {
+    const found = [];
+    const replaceWiths = arrayify(arguments);
+    replaceWiths.splice(0, 2);
+
+    arrayify(array).forEach((value, index) => {
+      let expanded = [];
+      replaceWiths.forEach(replaceWith => {
+        if (typeof replaceWith === 'function') {
+          expanded = expanded.concat(replaceWith(value));
+        } else {
+          expanded.push(replaceWith);
+        }
+      });
+
+      if (testFn(value)) {
+        found.push({
+          index: index,
+          replaceWithValue: expanded
+        });
+      }
+    });
+
+    found.reverse().forEach(item => {
+      const spliceArgs = [ item.index, 1 ].concat(item.replaceWithValue);
+      array.splice.apply(array, spliceArgs);
+    });
+
+    return array
+  }
+
+  return findReplace;
+
+}));
diff --git a/igv_component/node_modules/find-replace/dist/index.mjs b/igv_component/node_modules/find-replace/dist/index.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..715c1dd1ccd33c1d1428c86ed767502d2d92df97
--- /dev/null
+++ b/igv_component/node_modules/find-replace/dist/index.mjs
@@ -0,0 +1,116 @@
+/**
+ * Takes any input and guarantees an array back.
+ *
+ * - converts array-like objects (e.g. `arguments`) to a real array
+ * - converts `undefined` to an empty array
+ * - converts any another other, singular value (including `null`) into an array containing that value
+ * - ignores input which is already an array
+ *
+ * @module array-back
+ * @example
+ * > const arrayify = require('array-back')
+ *
+ * > arrayify(undefined)
+ * []
+ *
+ * > arrayify(null)
+ * [ null ]
+ *
+ * > arrayify(0)
+ * [ 0 ]
+ *
+ * > arrayify([ 1, 2 ])
+ * [ 1, 2 ]
+ *
+ * > function f(){ return arrayify(arguments); }
+ * > f(1,2,3)
+ * [ 1, 2, 3 ]
+ */
+
+function isObject (input) {
+  return typeof input === 'object' && input !== null
+}
+
+function isArrayLike (input) {
+  return isObject(input) && typeof input.length === 'number'
+}
+
+/**
+ * @param {*} - the input value to convert to an array
+ * @returns {Array}
+ * @alias module:array-back
+ */
+function arrayify (input) {
+  if (Array.isArray(input)) {
+    return input
+  } else {
+    if (input === undefined) {
+      return []
+    } else if (isArrayLike(input)) {
+      return Array.prototype.slice.call(input)
+    } else {
+      return [ input ]
+    }
+  }
+}
+
+/**
+ * Find and either replace or remove items in an array.
+ *
+ * @module find-replace
+ * @example
+ * > const findReplace = require('find-replace')
+ * > const numbers = [ 1, 2, 3]
+ *
+ * > findReplace(numbers, n => n === 2, 'two')
+ * [ 1, 'two', 3 ]
+ *
+ * > findReplace(numbers, n => n === 2, [ 'two', 'zwei' ])
+ * [ 1, [ 'two', 'zwei' ], 3 ]
+ *
+ * > findReplace(numbers, n => n === 2, 'two', 'zwei')
+ * [ 1, 'two', 'zwei', 3 ]
+ *
+ * > findReplace(numbers, n => n === 2) // no replacement, so remove
+ * [ 1, 3 ]
+ */
+
+/**
+ * @param {array} - The input array
+ * @param {testFn} - A predicate function which, if returning `true` causes the current item to be operated on.
+ * @param [replaceWith] {...any} - If specified, found values will be replaced with these values, else removed.
+ * @returns {array}
+ * @alias module:find-replace
+ */
+function findReplace (array, testFn) {
+  const found = [];
+  const replaceWiths = arrayify(arguments);
+  replaceWiths.splice(0, 2);
+
+  arrayify(array).forEach((value, index) => {
+    let expanded = [];
+    replaceWiths.forEach(replaceWith => {
+      if (typeof replaceWith === 'function') {
+        expanded = expanded.concat(replaceWith(value));
+      } else {
+        expanded.push(replaceWith);
+      }
+    });
+
+    if (testFn(value)) {
+      found.push({
+        index: index,
+        replaceWithValue: expanded
+      });
+    }
+  });
+
+  found.reverse().forEach(item => {
+    const spliceArgs = [ item.index, 1 ].concat(item.replaceWithValue);
+    array.splice.apply(array, spliceArgs);
+  });
+
+  return array
+}
+
+export default findReplace;
diff --git a/igv_component/node_modules/find-replace/index.mjs b/igv_component/node_modules/find-replace/index.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..dde6bd0f747d32dfa8a2dbccf2ec4963b5bd1e6a
--- /dev/null
+++ b/igv_component/node_modules/find-replace/index.mjs
@@ -0,0 +1,62 @@
+import arrayify from './node_modules/array-back/index.mjs'
+
+/**
+ * Find and either replace or remove items in an array.
+ *
+ * @module find-replace
+ * @example
+ * > const findReplace = require('find-replace')
+ * > const numbers = [ 1, 2, 3]
+ *
+ * > findReplace(numbers, n => n === 2, 'two')
+ * [ 1, 'two', 3 ]
+ *
+ * > findReplace(numbers, n => n === 2, [ 'two', 'zwei' ])
+ * [ 1, [ 'two', 'zwei' ], 3 ]
+ *
+ * > findReplace(numbers, n => n === 2, 'two', 'zwei')
+ * [ 1, 'two', 'zwei', 3 ]
+ *
+ * > findReplace(numbers, n => n === 2) // no replacement, so remove
+ * [ 1, 3 ]
+ */
+
+/**
+ * @param {array} - The input array
+ * @param {testFn} - A predicate function which, if returning `true` causes the current item to be operated on.
+ * @param [replaceWith] {...any} - If specified, found values will be replaced with these values, else removed.
+ * @returns {array}
+ * @alias module:find-replace
+ */
+function findReplace (array, testFn) {
+  const found = []
+  const replaceWiths = arrayify(arguments)
+  replaceWiths.splice(0, 2)
+
+  arrayify(array).forEach((value, index) => {
+    let expanded = []
+    replaceWiths.forEach(replaceWith => {
+      if (typeof replaceWith === 'function') {
+        expanded = expanded.concat(replaceWith(value))
+      } else {
+        expanded.push(replaceWith)
+      }
+    })
+
+    if (testFn(value)) {
+      found.push({
+        index: index,
+        replaceWithValue: expanded
+      })
+    }
+  })
+
+  found.reverse().forEach(item => {
+    const spliceArgs = [ item.index, 1 ].concat(item.replaceWithValue)
+    array.splice.apply(array, spliceArgs)
+  })
+
+  return array
+}
+
+export default findReplace
diff --git a/igv_component/node_modules/find-replace/package.json b/igv_component/node_modules/find-replace/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..4bebb38ee41095ae6860d4664b25c04c0edc7b4a
--- /dev/null
+++ b/igv_component/node_modules/find-replace/package.json
@@ -0,0 +1,36 @@
+{
+  "name": "find-replace",
+  "author": "Lloyd Brookes <75pound@gmail.com>",
+  "version": "3.0.0",
+  "description": "Find and either replace or remove items in an array",
+  "repository": "https://github.com/75lb/find-replace.git",
+  "license": "MIT",
+  "main": "dist/index.js",
+  "keywords": [
+    "find",
+    "replace",
+    "array",
+    "remove",
+    "splice"
+  ],
+  "engines": {
+    "node": ">=4.0.0"
+  },
+  "scripts": {
+    "test": "test-runner test.js",
+    "docs": "jsdoc2md -c jsdoc.conf -t README.hbs index.mjs > README.md; echo",
+    "dist": "rollup index.mjs -f umd -n findReplace -o dist/index.js && rollup index.mjs -f esm -o dist/index.mjs"
+  },
+  "devDependencies": {
+    "jsdoc-to-markdown": "^4.0.1",
+    "rollup": "^1.7.0",
+    "test-runner": "^0.5.1"
+  },
+  "dependencies": {
+    "array-back": "^3.0.1"
+  },
+  "files": [
+    "index.mjs",
+    "dist"
+  ]
+}
diff --git a/igv_component/node_modules/flatbuffers/LICENSE.txt b/igv_component/node_modules/flatbuffers/LICENSE.txt
new file mode 100644
index 0000000000000000000000000000000000000000..d645695673349e3947e8e5ae42332d0ac3164cd7
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/LICENSE.txt
@@ -0,0 +1,202 @@
+
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
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+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
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+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
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+
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+      "Contribution" shall mean any work of authorship, including
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+      designated in writing by the copyright owner as "Not a Contribution."
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+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
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+   3. Grant of Patent License. Subject to the terms and conditions of
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+          notices within Derivative Works that You distribute, alongside
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+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
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+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
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+
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+      Contributor provides its Contributions) on an "AS IS" BASIS,
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+      on Your own behalf and on Your sole responsibility, not on behalf
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+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
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+
+      To apply the Apache License to your work, attach the following
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+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
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+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/igv_component/node_modules/flatbuffers/js/README.md b/igv_component/node_modules/flatbuffers/js/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..cbcebe051cdec93bddfc9784763b40a19e49e41f
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/README.md
@@ -0,0 +1 @@
+This folder is intentionally empty and will contain transpiled js modules in Common JS format after compiling with tsc.
\ No newline at end of file
diff --git a/igv_component/node_modules/flatbuffers/js/builder.d.ts b/igv_component/node_modules/flatbuffers/js/builder.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2d5e9122cb6f177444dc05a5f2fc1bce31991f7f
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/builder.d.ts
@@ -0,0 +1,221 @@
+import { ByteBuffer } from "./byte-buffer";
+import { Offset } from "./types";
+import { Long } from "./long";
+export declare class Builder {
+    private bb;
+    /** Remaining space in the ByteBuffer. */
+    private space;
+    /** Minimum alignment encountered so far. */
+    private minalign;
+    /** The vtable for the current table. */
+    private vtable;
+    /** The amount of fields we're actually using. */
+    private vtable_in_use;
+    /** Whether we are currently serializing a table. */
+    private isNested;
+    /** Starting offset of the current struct/table. */
+    private object_start;
+    /** List of offsets of all vtables. */
+    private vtables;
+    /** For the current vector being built. */
+    private vector_num_elems;
+    /** False omits default values from the serialized data */
+    private force_defaults;
+    private string_maps;
+    /**
+     * Create a FlatBufferBuilder.
+     */
+    constructor(opt_initial_size?: number);
+    clear(): void;
+    /**
+     * In order to save space, fields that are set to their default value
+     * don't get serialized into the buffer. Forcing defaults provides a
+     * way to manually disable this optimization.
+     *
+     * @param forceDefaults true always serializes default values
+     */
+    forceDefaults(forceDefaults: boolean): void;
+    /**
+     * Get the ByteBuffer representing the FlatBuffer. Only call this after you've
+     * called finish(). The actual data starts at the ByteBuffer's current position,
+     * not necessarily at 0.
+     */
+    dataBuffer(): ByteBuffer;
+    /**
+     * Get the bytes representing the FlatBuffer. Only call this after you've
+     * called finish().
+     */
+    asUint8Array(): Uint8Array;
+    /**
+     * Prepare to write an element of `size` after `additional_bytes` have been
+     * written, e.g. if you write a string, you need to align such the int length
+     * field is aligned to 4 bytes, and the string data follows it directly. If all
+     * you need to do is alignment, `additional_bytes` will be 0.
+     *
+     * @param size This is the of the new element to write
+     * @param additional_bytes The padding size
+     */
+    prep(size: number, additional_bytes: number): void;
+    pad(byte_size: number): void;
+    writeInt8(value: number): void;
+    writeInt16(value: number): void;
+    writeInt32(value: number): void;
+    writeInt64(value: Long): void;
+    writeFloat32(value: number): void;
+    writeFloat64(value: number): void;
+    /**
+     * Add an `int8` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int8` to add the the buffer.
+     */
+    addInt8(value: number): void;
+    /**
+     * Add an `int16` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int16` to add the the buffer.
+     */
+    addInt16(value: number): void;
+    /**
+     * Add an `int32` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int32` to add the the buffer.
+     */
+    addInt32(value: number): void;
+    /**
+     * Add an `int64` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int64` to add the the buffer.
+     */
+    addInt64(value: Long): void;
+    /**
+     * Add a `float32` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `float32` to add the the buffer.
+     */
+    addFloat32(value: number): void;
+    /**
+     * Add a `float64` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `float64` to add the the buffer.
+     */
+    addFloat64(value: number): void;
+    addFieldInt8(voffset: number, value: number, defaultValue: number): void;
+    addFieldInt16(voffset: number, value: number, defaultValue: number): void;
+    addFieldInt32(voffset: number, value: number, defaultValue: number): void;
+    addFieldInt64(voffset: number, value: Long, defaultValue: Long): void;
+    addFieldFloat32(voffset: number, value: number, defaultValue: number): void;
+    addFieldFloat64(voffset: number, value: number, defaultValue: number): void;
+    addFieldOffset(voffset: number, value: Offset, defaultValue: Offset): void;
+    /**
+     * Structs are stored inline, so nothing additional is being added. `d` is always 0.
+     */
+    addFieldStruct(voffset: number, value: Offset, defaultValue: Offset): void;
+    /**
+     * Structures are always stored inline, they need to be created right
+     * where they're used.  You'll get this assertion failure if you
+     * created it elsewhere.
+     */
+    nested(obj: Offset): void;
+    /**
+     * Should not be creating any other object, string or vector
+     * while an object is being constructed
+     */
+    notNested(): void;
+    /**
+     * Set the current vtable at `voffset` to the current location in the buffer.
+     */
+    slot(voffset: number): void;
+    /**
+     * @returns Offset relative to the end of the buffer.
+     */
+    offset(): Offset;
+    /**
+     * Doubles the size of the backing ByteBuffer and copies the old data towards
+     * the end of the new buffer (since we build the buffer backwards).
+     *
+     * @param bb The current buffer with the existing data
+     * @returns A new byte buffer with the old data copied
+     * to it. The data is located at the end of the buffer.
+     *
+     * uint8Array.set() formally takes {Array<number>|ArrayBufferView}, so to pass
+     * it a uint8Array we need to suppress the type check:
+     * @suppress {checkTypes}
+     */
+    static growByteBuffer(bb: ByteBuffer): ByteBuffer;
+    /**
+     * Adds on offset, relative to where it will be written.
+     *
+     * @param offset The offset to add.
+     */
+    addOffset(offset: Offset): void;
+    /**
+     * Start encoding a new object in the buffer.  Users will not usually need to
+     * call this directly. The FlatBuffers compiler will generate helper methods
+     * that call this method internally.
+     */
+    startObject(numfields: number): void;
+    /**
+     * Finish off writing the object that is under construction.
+     *
+     * @returns The offset to the object inside `dataBuffer`
+     */
+    endObject(): Offset;
+    /**
+     * Finalize a buffer, poiting to the given `root_table`.
+     */
+    finish(root_table: Offset, opt_file_identifier?: string, opt_size_prefix?: boolean): void;
+    /**
+     * Finalize a size prefixed buffer, pointing to the given `root_table`.
+     */
+    finishSizePrefixed(this: Builder, root_table: Offset, opt_file_identifier?: string): void;
+    /**
+     * This checks a required field has been set in a given table that has
+     * just been constructed.
+     */
+    requiredField(table: Offset, field: number): void;
+    /**
+     * Start a new array/vector of objects.  Users usually will not call
+     * this directly. The FlatBuffers compiler will create a start/end
+     * method for vector types in generated code.
+     *
+     * @param elem_size The size of each element in the array
+     * @param num_elems The number of elements in the array
+     * @param alignment The alignment of the array
+     */
+    startVector(elem_size: number, num_elems: number, alignment: number): void;
+    /**
+     * Finish off the creation of an array and all its elements. The array must be
+     * created with `startVector`.
+     *
+     * @returns The offset at which the newly created array
+     * starts.
+     */
+    endVector(): Offset;
+    /**
+     * Encode the string `s` in the buffer using UTF-8. If the string passed has
+     * already been seen, we return the offset of the already written string
+     *
+     * @param s The string to encode
+     * @return The offset in the buffer where the encoded string starts
+     */
+    createSharedString(s: string | Uint8Array): Offset;
+    /**
+     * Encode the string `s` in the buffer using UTF-8. If a Uint8Array is passed
+     * instead of a string, it is assumed to contain valid UTF-8 encoded data.
+     *
+     * @param s The string to encode
+     * @return The offset in the buffer where the encoded string starts
+     */
+    createString(s: string | Uint8Array): Offset;
+    /**
+     * A helper function to avoid generated code depending on this file directly.
+     */
+    createLong(low: number, high: number): Long;
+    /**
+     * A helper function to pack an object
+     *
+     * @returns offset of obj
+     */
+    createObjectOffset(obj: string | any): Offset;
+    /**
+     * A helper function to pack a list of object
+     *
+     * @returns list of offsets of each non null object
+     */
+    createObjectOffsetList(list: string[] | any[]): Offset[];
+    createStructOffsetList(list: string[] | any[], startFunc: (builder: Builder, length: number) => void): Offset;
+}
diff --git a/igv_component/node_modules/flatbuffers/js/builder.js b/igv_component/node_modules/flatbuffers/js/builder.js
new file mode 100644
index 0000000000000000000000000000000000000000..dce81e5308890aa94a48f0dbda9f391f4c0526bd
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/builder.js
@@ -0,0 +1,562 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Builder = void 0;
+var byte_buffer_1 = require("./byte-buffer");
+var constants_1 = require("./constants");
+var long_1 = require("./long");
+var Builder = /** @class */ (function () {
+    /**
+     * Create a FlatBufferBuilder.
+     */
+    function Builder(opt_initial_size) {
+        /** Minimum alignment encountered so far. */
+        this.minalign = 1;
+        /** The vtable for the current table. */
+        this.vtable = null;
+        /** The amount of fields we're actually using. */
+        this.vtable_in_use = 0;
+        /** Whether we are currently serializing a table. */
+        this.isNested = false;
+        /** Starting offset of the current struct/table. */
+        this.object_start = 0;
+        /** List of offsets of all vtables. */
+        this.vtables = [];
+        /** For the current vector being built. */
+        this.vector_num_elems = 0;
+        /** False omits default values from the serialized data */
+        this.force_defaults = false;
+        this.string_maps = null;
+        var initial_size;
+        if (!opt_initial_size) {
+            initial_size = 1024;
+        }
+        else {
+            initial_size = opt_initial_size;
+        }
+        /**
+         * @type {ByteBuffer}
+         * @private
+         */
+        this.bb = byte_buffer_1.ByteBuffer.allocate(initial_size);
+        this.space = initial_size;
+    }
+    Builder.prototype.clear = function () {
+        this.bb.clear();
+        this.space = this.bb.capacity();
+        this.minalign = 1;
+        this.vtable = null;
+        this.vtable_in_use = 0;
+        this.isNested = false;
+        this.object_start = 0;
+        this.vtables = [];
+        this.vector_num_elems = 0;
+        this.force_defaults = false;
+        this.string_maps = null;
+    };
+    /**
+     * In order to save space, fields that are set to their default value
+     * don't get serialized into the buffer. Forcing defaults provides a
+     * way to manually disable this optimization.
+     *
+     * @param forceDefaults true always serializes default values
+     */
+    Builder.prototype.forceDefaults = function (forceDefaults) {
+        this.force_defaults = forceDefaults;
+    };
+    /**
+     * Get the ByteBuffer representing the FlatBuffer. Only call this after you've
+     * called finish(). The actual data starts at the ByteBuffer's current position,
+     * not necessarily at 0.
+     */
+    Builder.prototype.dataBuffer = function () {
+        return this.bb;
+    };
+    /**
+     * Get the bytes representing the FlatBuffer. Only call this after you've
+     * called finish().
+     */
+    Builder.prototype.asUint8Array = function () {
+        return this.bb.bytes().subarray(this.bb.position(), this.bb.position() + this.offset());
+    };
+    /**
+     * Prepare to write an element of `size` after `additional_bytes` have been
+     * written, e.g. if you write a string, you need to align such the int length
+     * field is aligned to 4 bytes, and the string data follows it directly. If all
+     * you need to do is alignment, `additional_bytes` will be 0.
+     *
+     * @param size This is the of the new element to write
+     * @param additional_bytes The padding size
+     */
+    Builder.prototype.prep = function (size, additional_bytes) {
+        // Track the biggest thing we've ever aligned to.
+        if (size > this.minalign) {
+            this.minalign = size;
+        }
+        // Find the amount of alignment needed such that `size` is properly
+        // aligned after `additional_bytes`
+        var align_size = ((~(this.bb.capacity() - this.space + additional_bytes)) + 1) & (size - 1);
+        // Reallocate the buffer if needed.
+        while (this.space < align_size + size + additional_bytes) {
+            var old_buf_size = this.bb.capacity();
+            this.bb = Builder.growByteBuffer(this.bb);
+            this.space += this.bb.capacity() - old_buf_size;
+        }
+        this.pad(align_size);
+    };
+    Builder.prototype.pad = function (byte_size) {
+        for (var i = 0; i < byte_size; i++) {
+            this.bb.writeInt8(--this.space, 0);
+        }
+    };
+    Builder.prototype.writeInt8 = function (value) {
+        this.bb.writeInt8(this.space -= 1, value);
+    };
+    Builder.prototype.writeInt16 = function (value) {
+        this.bb.writeInt16(this.space -= 2, value);
+    };
+    Builder.prototype.writeInt32 = function (value) {
+        this.bb.writeInt32(this.space -= 4, value);
+    };
+    Builder.prototype.writeInt64 = function (value) {
+        this.bb.writeInt64(this.space -= 8, value);
+    };
+    Builder.prototype.writeFloat32 = function (value) {
+        this.bb.writeFloat32(this.space -= 4, value);
+    };
+    Builder.prototype.writeFloat64 = function (value) {
+        this.bb.writeFloat64(this.space -= 8, value);
+    };
+    /**
+     * Add an `int8` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int8` to add the the buffer.
+     */
+    Builder.prototype.addInt8 = function (value) {
+        this.prep(1, 0);
+        this.writeInt8(value);
+    };
+    /**
+     * Add an `int16` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int16` to add the the buffer.
+     */
+    Builder.prototype.addInt16 = function (value) {
+        this.prep(2, 0);
+        this.writeInt16(value);
+    };
+    /**
+     * Add an `int32` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int32` to add the the buffer.
+     */
+    Builder.prototype.addInt32 = function (value) {
+        this.prep(4, 0);
+        this.writeInt32(value);
+    };
+    /**
+     * Add an `int64` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int64` to add the the buffer.
+     */
+    Builder.prototype.addInt64 = function (value) {
+        this.prep(8, 0);
+        this.writeInt64(value);
+    };
+    /**
+     * Add a `float32` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `float32` to add the the buffer.
+     */
+    Builder.prototype.addFloat32 = function (value) {
+        this.prep(4, 0);
+        this.writeFloat32(value);
+    };
+    /**
+     * Add a `float64` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `float64` to add the the buffer.
+     */
+    Builder.prototype.addFloat64 = function (value) {
+        this.prep(8, 0);
+        this.writeFloat64(value);
+    };
+    Builder.prototype.addFieldInt8 = function (voffset, value, defaultValue) {
+        if (this.force_defaults || value != defaultValue) {
+            this.addInt8(value);
+            this.slot(voffset);
+        }
+    };
+    Builder.prototype.addFieldInt16 = function (voffset, value, defaultValue) {
+        if (this.force_defaults || value != defaultValue) {
+            this.addInt16(value);
+            this.slot(voffset);
+        }
+    };
+    Builder.prototype.addFieldInt32 = function (voffset, value, defaultValue) {
+        if (this.force_defaults || value != defaultValue) {
+            this.addInt32(value);
+            this.slot(voffset);
+        }
+    };
+    Builder.prototype.addFieldInt64 = function (voffset, value, defaultValue) {
+        if (this.force_defaults || !value.equals(defaultValue)) {
+            this.addInt64(value);
+            this.slot(voffset);
+        }
+    };
+    Builder.prototype.addFieldFloat32 = function (voffset, value, defaultValue) {
+        if (this.force_defaults || value != defaultValue) {
+            this.addFloat32(value);
+            this.slot(voffset);
+        }
+    };
+    Builder.prototype.addFieldFloat64 = function (voffset, value, defaultValue) {
+        if (this.force_defaults || value != defaultValue) {
+            this.addFloat64(value);
+            this.slot(voffset);
+        }
+    };
+    Builder.prototype.addFieldOffset = function (voffset, value, defaultValue) {
+        if (this.force_defaults || value != defaultValue) {
+            this.addOffset(value);
+            this.slot(voffset);
+        }
+    };
+    /**
+     * Structs are stored inline, so nothing additional is being added. `d` is always 0.
+     */
+    Builder.prototype.addFieldStruct = function (voffset, value, defaultValue) {
+        if (value != defaultValue) {
+            this.nested(value);
+            this.slot(voffset);
+        }
+    };
+    /**
+     * Structures are always stored inline, they need to be created right
+     * where they're used.  You'll get this assertion failure if you
+     * created it elsewhere.
+     */
+    Builder.prototype.nested = function (obj) {
+        if (obj != this.offset()) {
+            throw new Error('FlatBuffers: struct must be serialized inline.');
+        }
+    };
+    /**
+     * Should not be creating any other object, string or vector
+     * while an object is being constructed
+     */
+    Builder.prototype.notNested = function () {
+        if (this.isNested) {
+            throw new Error('FlatBuffers: object serialization must not be nested.');
+        }
+    };
+    /**
+     * Set the current vtable at `voffset` to the current location in the buffer.
+     */
+    Builder.prototype.slot = function (voffset) {
+        if (this.vtable !== null)
+            this.vtable[voffset] = this.offset();
+    };
+    /**
+     * @returns Offset relative to the end of the buffer.
+     */
+    Builder.prototype.offset = function () {
+        return this.bb.capacity() - this.space;
+    };
+    /**
+     * Doubles the size of the backing ByteBuffer and copies the old data towards
+     * the end of the new buffer (since we build the buffer backwards).
+     *
+     * @param bb The current buffer with the existing data
+     * @returns A new byte buffer with the old data copied
+     * to it. The data is located at the end of the buffer.
+     *
+     * uint8Array.set() formally takes {Array<number>|ArrayBufferView}, so to pass
+     * it a uint8Array we need to suppress the type check:
+     * @suppress {checkTypes}
+     */
+    Builder.growByteBuffer = function (bb) {
+        var old_buf_size = bb.capacity();
+        // Ensure we don't grow beyond what fits in an int.
+        if (old_buf_size & 0xC0000000) {
+            throw new Error('FlatBuffers: cannot grow buffer beyond 2 gigabytes.');
+        }
+        var new_buf_size = old_buf_size << 1;
+        var nbb = byte_buffer_1.ByteBuffer.allocate(new_buf_size);
+        nbb.setPosition(new_buf_size - old_buf_size);
+        nbb.bytes().set(bb.bytes(), new_buf_size - old_buf_size);
+        return nbb;
+    };
+    /**
+     * Adds on offset, relative to where it will be written.
+     *
+     * @param offset The offset to add.
+     */
+    Builder.prototype.addOffset = function (offset) {
+        this.prep(constants_1.SIZEOF_INT, 0); // Ensure alignment is already done.
+        this.writeInt32(this.offset() - offset + constants_1.SIZEOF_INT);
+    };
+    /**
+     * Start encoding a new object in the buffer.  Users will not usually need to
+     * call this directly. The FlatBuffers compiler will generate helper methods
+     * that call this method internally.
+     */
+    Builder.prototype.startObject = function (numfields) {
+        this.notNested();
+        if (this.vtable == null) {
+            this.vtable = [];
+        }
+        this.vtable_in_use = numfields;
+        for (var i = 0; i < numfields; i++) {
+            this.vtable[i] = 0; // This will push additional elements as needed
+        }
+        this.isNested = true;
+        this.object_start = this.offset();
+    };
+    /**
+     * Finish off writing the object that is under construction.
+     *
+     * @returns The offset to the object inside `dataBuffer`
+     */
+    Builder.prototype.endObject = function () {
+        if (this.vtable == null || !this.isNested) {
+            throw new Error('FlatBuffers: endObject called without startObject');
+        }
+        this.addInt32(0);
+        var vtableloc = this.offset();
+        // Trim trailing zeroes.
+        var i = this.vtable_in_use - 1;
+        // eslint-disable-next-line no-empty
+        for (; i >= 0 && this.vtable[i] == 0; i--) { }
+        var trimmed_size = i + 1;
+        // Write out the current vtable.
+        for (; i >= 0; i--) {
+            // Offset relative to the start of the table.
+            this.addInt16(this.vtable[i] != 0 ? vtableloc - this.vtable[i] : 0);
+        }
+        var standard_fields = 2; // The fields below:
+        this.addInt16(vtableloc - this.object_start);
+        var len = (trimmed_size + standard_fields) * constants_1.SIZEOF_SHORT;
+        this.addInt16(len);
+        // Search for an existing vtable that matches the current one.
+        var existing_vtable = 0;
+        var vt1 = this.space;
+        outer_loop: for (i = 0; i < this.vtables.length; i++) {
+            var vt2 = this.bb.capacity() - this.vtables[i];
+            if (len == this.bb.readInt16(vt2)) {
+                for (var j = constants_1.SIZEOF_SHORT; j < len; j += constants_1.SIZEOF_SHORT) {
+                    if (this.bb.readInt16(vt1 + j) != this.bb.readInt16(vt2 + j)) {
+                        continue outer_loop;
+                    }
+                }
+                existing_vtable = this.vtables[i];
+                break;
+            }
+        }
+        if (existing_vtable) {
+            // Found a match:
+            // Remove the current vtable.
+            this.space = this.bb.capacity() - vtableloc;
+            // Point table to existing vtable.
+            this.bb.writeInt32(this.space, existing_vtable - vtableloc);
+        }
+        else {
+            // No match:
+            // Add the location of the current vtable to the list of vtables.
+            this.vtables.push(this.offset());
+            // Point table to current vtable.
+            this.bb.writeInt32(this.bb.capacity() - vtableloc, this.offset() - vtableloc);
+        }
+        this.isNested = false;
+        return vtableloc;
+    };
+    /**
+     * Finalize a buffer, poiting to the given `root_table`.
+     */
+    Builder.prototype.finish = function (root_table, opt_file_identifier, opt_size_prefix) {
+        var size_prefix = opt_size_prefix ? constants_1.SIZE_PREFIX_LENGTH : 0;
+        if (opt_file_identifier) {
+            var file_identifier = opt_file_identifier;
+            this.prep(this.minalign, constants_1.SIZEOF_INT +
+                constants_1.FILE_IDENTIFIER_LENGTH + size_prefix);
+            if (file_identifier.length != constants_1.FILE_IDENTIFIER_LENGTH) {
+                throw new Error('FlatBuffers: file identifier must be length ' +
+                    constants_1.FILE_IDENTIFIER_LENGTH);
+            }
+            for (var i = constants_1.FILE_IDENTIFIER_LENGTH - 1; i >= 0; i--) {
+                this.writeInt8(file_identifier.charCodeAt(i));
+            }
+        }
+        this.prep(this.minalign, constants_1.SIZEOF_INT + size_prefix);
+        this.addOffset(root_table);
+        if (size_prefix) {
+            this.addInt32(this.bb.capacity() - this.space);
+        }
+        this.bb.setPosition(this.space);
+    };
+    /**
+     * Finalize a size prefixed buffer, pointing to the given `root_table`.
+     */
+    Builder.prototype.finishSizePrefixed = function (root_table, opt_file_identifier) {
+        this.finish(root_table, opt_file_identifier, true);
+    };
+    /**
+     * This checks a required field has been set in a given table that has
+     * just been constructed.
+     */
+    Builder.prototype.requiredField = function (table, field) {
+        var table_start = this.bb.capacity() - table;
+        var vtable_start = table_start - this.bb.readInt32(table_start);
+        var ok = this.bb.readInt16(vtable_start + field) != 0;
+        // If this fails, the caller will show what field needs to be set.
+        if (!ok) {
+            throw new Error('FlatBuffers: field ' + field + ' must be set');
+        }
+    };
+    /**
+     * Start a new array/vector of objects.  Users usually will not call
+     * this directly. The FlatBuffers compiler will create a start/end
+     * method for vector types in generated code.
+     *
+     * @param elem_size The size of each element in the array
+     * @param num_elems The number of elements in the array
+     * @param alignment The alignment of the array
+     */
+    Builder.prototype.startVector = function (elem_size, num_elems, alignment) {
+        this.notNested();
+        this.vector_num_elems = num_elems;
+        this.prep(constants_1.SIZEOF_INT, elem_size * num_elems);
+        this.prep(alignment, elem_size * num_elems); // Just in case alignment > int.
+    };
+    /**
+     * Finish off the creation of an array and all its elements. The array must be
+     * created with `startVector`.
+     *
+     * @returns The offset at which the newly created array
+     * starts.
+     */
+    Builder.prototype.endVector = function () {
+        this.writeInt32(this.vector_num_elems);
+        return this.offset();
+    };
+    /**
+     * Encode the string `s` in the buffer using UTF-8. If the string passed has
+     * already been seen, we return the offset of the already written string
+     *
+     * @param s The string to encode
+     * @return The offset in the buffer where the encoded string starts
+     */
+    Builder.prototype.createSharedString = function (s) {
+        if (!s) {
+            return 0;
+        }
+        if (!this.string_maps) {
+            this.string_maps = new Map();
+        }
+        if (this.string_maps.has(s)) {
+            return this.string_maps.get(s);
+        }
+        var offset = this.createString(s);
+        this.string_maps.set(s, offset);
+        return offset;
+    };
+    /**
+     * Encode the string `s` in the buffer using UTF-8. If a Uint8Array is passed
+     * instead of a string, it is assumed to contain valid UTF-8 encoded data.
+     *
+     * @param s The string to encode
+     * @return The offset in the buffer where the encoded string starts
+     */
+    Builder.prototype.createString = function (s) {
+        if (!s) {
+            return 0;
+        }
+        var utf8;
+        if (s instanceof Uint8Array) {
+            utf8 = s;
+        }
+        else {
+            utf8 = [];
+            var i = 0;
+            while (i < s.length) {
+                var codePoint = void 0;
+                // Decode UTF-16
+                var a = s.charCodeAt(i++);
+                if (a < 0xD800 || a >= 0xDC00) {
+                    codePoint = a;
+                }
+                else {
+                    var b = s.charCodeAt(i++);
+                    codePoint = (a << 10) + b + (0x10000 - (0xD800 << 10) - 0xDC00);
+                }
+                // Encode UTF-8
+                if (codePoint < 0x80) {
+                    utf8.push(codePoint);
+                }
+                else {
+                    if (codePoint < 0x800) {
+                        utf8.push(((codePoint >> 6) & 0x1F) | 0xC0);
+                    }
+                    else {
+                        if (codePoint < 0x10000) {
+                            utf8.push(((codePoint >> 12) & 0x0F) | 0xE0);
+                        }
+                        else {
+                            utf8.push(((codePoint >> 18) & 0x07) | 0xF0, ((codePoint >> 12) & 0x3F) | 0x80);
+                        }
+                        utf8.push(((codePoint >> 6) & 0x3F) | 0x80);
+                    }
+                    utf8.push((codePoint & 0x3F) | 0x80);
+                }
+            }
+        }
+        this.addInt8(0);
+        this.startVector(1, utf8.length, 1);
+        this.bb.setPosition(this.space -= utf8.length);
+        for (var i = 0, offset = this.space, bytes = this.bb.bytes(); i < utf8.length; i++) {
+            bytes[offset++] = utf8[i];
+        }
+        return this.endVector();
+    };
+    /**
+     * A helper function to avoid generated code depending on this file directly.
+     */
+    Builder.prototype.createLong = function (low, high) {
+        return long_1.Long.create(low, high);
+    };
+    /**
+     * A helper function to pack an object
+     *
+     * @returns offset of obj
+     */
+    Builder.prototype.createObjectOffset = function (obj) {
+        if (obj === null) {
+            return 0;
+        }
+        if (typeof obj === 'string') {
+            return this.createString(obj);
+        }
+        else {
+            return obj.pack(this);
+        }
+    };
+    /**
+     * A helper function to pack a list of object
+     *
+     * @returns list of offsets of each non null object
+     */
+    Builder.prototype.createObjectOffsetList = function (list) {
+        var ret = [];
+        for (var i = 0; i < list.length; ++i) {
+            var val = list[i];
+            if (val !== null) {
+                ret.push(this.createObjectOffset(val));
+            }
+            else {
+                throw new Error('FlatBuffers: Argument for createObjectOffsetList cannot contain null.');
+            }
+        }
+        return ret;
+    };
+    Builder.prototype.createStructOffsetList = function (list, startFunc) {
+        startFunc(this, list.length);
+        this.createObjectOffsetList(list);
+        return this.endVector();
+    };
+    return Builder;
+}());
+exports.Builder = Builder;
diff --git a/igv_component/node_modules/flatbuffers/js/byte-buffer.d.ts b/igv_component/node_modules/flatbuffers/js/byte-buffer.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..eafca3c750d7befe2201163a55cfe5e18dddd9f9
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/byte-buffer.d.ts
@@ -0,0 +1,116 @@
+import { Long } from "./long";
+import { Offset, Table } from "./types";
+import { Encoding } from "./encoding";
+export declare class ByteBuffer {
+    private bytes_;
+    private position_;
+    /**
+     * Create a new ByteBuffer with a given array of bytes (`Uint8Array`)
+     */
+    constructor(bytes_: Uint8Array);
+    /**
+     * Create and allocate a new ByteBuffer with a given size.
+     */
+    static allocate(byte_size: number): ByteBuffer;
+    clear(): void;
+    /**
+     * Get the underlying `Uint8Array`.
+     */
+    bytes(): Uint8Array;
+    /**
+     * Get the buffer's position.
+     */
+    position(): number;
+    /**
+     * Set the buffer's position.
+     */
+    setPosition(position: number): void;
+    /**
+     * Get the buffer's capacity.
+     */
+    capacity(): number;
+    readInt8(offset: number): number;
+    readUint8(offset: number): number;
+    readInt16(offset: number): number;
+    readUint16(offset: number): number;
+    readInt32(offset: number): number;
+    readUint32(offset: number): number;
+    readInt64(offset: number): Long;
+    readUint64(offset: number): Long;
+    readFloat32(offset: number): number;
+    readFloat64(offset: number): number;
+    writeInt8(offset: number, value: number): void;
+    writeUint8(offset: number, value: number): void;
+    writeInt16(offset: number, value: number): void;
+    writeUint16(offset: number, value: number): void;
+    writeInt32(offset: number, value: number): void;
+    writeUint32(offset: number, value: number): void;
+    writeInt64(offset: number, value: Long): void;
+    writeUint64(offset: number, value: Long): void;
+    writeFloat32(offset: number, value: number): void;
+    writeFloat64(offset: number, value: number): void;
+    /**
+     * Return the file identifier.   Behavior is undefined for FlatBuffers whose
+     * schema does not include a file_identifier (likely points at padding or the
+     * start of a the root vtable).
+     */
+    getBufferIdentifier(): string;
+    /**
+     * Look up a field in the vtable, return an offset into the object, or 0 if the
+     * field is not present.
+     */
+    __offset(bb_pos: number, vtable_offset: number): Offset;
+    /**
+     * Initialize any Table-derived type to point to the union at the given offset.
+     */
+    __union(t: Table, offset: number): Table;
+    /**
+     * Create a JavaScript string from UTF-8 data stored inside the FlatBuffer.
+     * This allocates a new string and converts to wide chars upon each access.
+     *
+     * To avoid the conversion to UTF-16, pass Encoding.UTF8_BYTES as
+     * the "optionalEncoding" argument. This is useful for avoiding conversion to
+     * and from UTF-16 when the data will just be packaged back up in another
+     * FlatBuffer later on.
+     *
+     * @param offset
+     * @param opt_encoding Defaults to UTF16_STRING
+     */
+    __string(offset: number, opt_encoding?: Encoding): string | Uint8Array;
+    /**
+     * Handle unions that can contain string as its member, if a Table-derived type then initialize it,
+     * if a string then return a new one
+     *
+     * WARNING: strings are immutable in JS so we can't change the string that the user gave us, this
+     * makes the behaviour of __union_with_string different compared to __union
+     */
+    __union_with_string(o: Table | string, offset: number): Table | string;
+    /**
+     * Retrieve the relative offset stored at "offset"
+     */
+    __indirect(offset: Offset): Offset;
+    /**
+     * Get the start of data of a vector whose offset is stored at "offset" in this object.
+     */
+    __vector(offset: Offset): Offset;
+    /**
+     * Get the length of a vector whose offset is stored at "offset" in this object.
+     */
+    __vector_len(offset: Offset): Offset;
+    __has_identifier(ident: string): boolean;
+    /**
+     * A helper function to avoid generated code depending on this file directly.
+     */
+    createLong(low: number, high: number): Long;
+    /**
+     * A helper function for generating list for obj api
+     */
+    createScalarList(listAccessor: (i: number) => unknown, listLength: number): any[];
+    /**
+     * A helper function for generating list for obj api
+     * @param listAccessor function that accepts an index and return data at that index
+     * @param listLength listLength
+     * @param res result list
+     */
+    createObjList(listAccessor: (i: number) => unknown, listLength: number): any[];
+}
diff --git a/igv_component/node_modules/flatbuffers/js/byte-buffer.js b/igv_component/node_modules/flatbuffers/js/byte-buffer.js
new file mode 100644
index 0000000000000000000000000000000000000000..0da9dcc514dfe4518eab0eec6524ef3cadae1744
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/byte-buffer.js
@@ -0,0 +1,300 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ByteBuffer = void 0;
+var constants_1 = require("./constants");
+var long_1 = require("./long");
+var utils_1 = require("./utils");
+var encoding_1 = require("./encoding");
+var ByteBuffer = /** @class */ (function () {
+    /**
+     * Create a new ByteBuffer with a given array of bytes (`Uint8Array`)
+     */
+    function ByteBuffer(bytes_) {
+        this.bytes_ = bytes_;
+        this.position_ = 0;
+    }
+    /**
+     * Create and allocate a new ByteBuffer with a given size.
+     */
+    ByteBuffer.allocate = function (byte_size) {
+        return new ByteBuffer(new Uint8Array(byte_size));
+    };
+    ByteBuffer.prototype.clear = function () {
+        this.position_ = 0;
+    };
+    /**
+     * Get the underlying `Uint8Array`.
+     */
+    ByteBuffer.prototype.bytes = function () {
+        return this.bytes_;
+    };
+    /**
+     * Get the buffer's position.
+     */
+    ByteBuffer.prototype.position = function () {
+        return this.position_;
+    };
+    /**
+     * Set the buffer's position.
+     */
+    ByteBuffer.prototype.setPosition = function (position) {
+        this.position_ = position;
+    };
+    /**
+     * Get the buffer's capacity.
+     */
+    ByteBuffer.prototype.capacity = function () {
+        return this.bytes_.length;
+    };
+    ByteBuffer.prototype.readInt8 = function (offset) {
+        return this.readUint8(offset) << 24 >> 24;
+    };
+    ByteBuffer.prototype.readUint8 = function (offset) {
+        return this.bytes_[offset];
+    };
+    ByteBuffer.prototype.readInt16 = function (offset) {
+        return this.readUint16(offset) << 16 >> 16;
+    };
+    ByteBuffer.prototype.readUint16 = function (offset) {
+        return this.bytes_[offset] | this.bytes_[offset + 1] << 8;
+    };
+    ByteBuffer.prototype.readInt32 = function (offset) {
+        return this.bytes_[offset] | this.bytes_[offset + 1] << 8 | this.bytes_[offset + 2] << 16 | this.bytes_[offset + 3] << 24;
+    };
+    ByteBuffer.prototype.readUint32 = function (offset) {
+        return this.readInt32(offset) >>> 0;
+    };
+    ByteBuffer.prototype.readInt64 = function (offset) {
+        return new long_1.Long(this.readInt32(offset), this.readInt32(offset + 4));
+    };
+    ByteBuffer.prototype.readUint64 = function (offset) {
+        return new long_1.Long(this.readUint32(offset), this.readUint32(offset + 4));
+    };
+    ByteBuffer.prototype.readFloat32 = function (offset) {
+        utils_1.int32[0] = this.readInt32(offset);
+        return utils_1.float32[0];
+    };
+    ByteBuffer.prototype.readFloat64 = function (offset) {
+        utils_1.int32[utils_1.isLittleEndian ? 0 : 1] = this.readInt32(offset);
+        utils_1.int32[utils_1.isLittleEndian ? 1 : 0] = this.readInt32(offset + 4);
+        return utils_1.float64[0];
+    };
+    ByteBuffer.prototype.writeInt8 = function (offset, value) {
+        this.bytes_[offset] = value;
+    };
+    ByteBuffer.prototype.writeUint8 = function (offset, value) {
+        this.bytes_[offset] = value;
+    };
+    ByteBuffer.prototype.writeInt16 = function (offset, value) {
+        this.bytes_[offset] = value;
+        this.bytes_[offset + 1] = value >> 8;
+    };
+    ByteBuffer.prototype.writeUint16 = function (offset, value) {
+        this.bytes_[offset] = value;
+        this.bytes_[offset + 1] = value >> 8;
+    };
+    ByteBuffer.prototype.writeInt32 = function (offset, value) {
+        this.bytes_[offset] = value;
+        this.bytes_[offset + 1] = value >> 8;
+        this.bytes_[offset + 2] = value >> 16;
+        this.bytes_[offset + 3] = value >> 24;
+    };
+    ByteBuffer.prototype.writeUint32 = function (offset, value) {
+        this.bytes_[offset] = value;
+        this.bytes_[offset + 1] = value >> 8;
+        this.bytes_[offset + 2] = value >> 16;
+        this.bytes_[offset + 3] = value >> 24;
+    };
+    ByteBuffer.prototype.writeInt64 = function (offset, value) {
+        this.writeInt32(offset, value.low);
+        this.writeInt32(offset + 4, value.high);
+    };
+    ByteBuffer.prototype.writeUint64 = function (offset, value) {
+        this.writeUint32(offset, value.low);
+        this.writeUint32(offset + 4, value.high);
+    };
+    ByteBuffer.prototype.writeFloat32 = function (offset, value) {
+        utils_1.float32[0] = value;
+        this.writeInt32(offset, utils_1.int32[0]);
+    };
+    ByteBuffer.prototype.writeFloat64 = function (offset, value) {
+        utils_1.float64[0] = value;
+        this.writeInt32(offset, utils_1.int32[utils_1.isLittleEndian ? 0 : 1]);
+        this.writeInt32(offset + 4, utils_1.int32[utils_1.isLittleEndian ? 1 : 0]);
+    };
+    /**
+     * Return the file identifier.   Behavior is undefined for FlatBuffers whose
+     * schema does not include a file_identifier (likely points at padding or the
+     * start of a the root vtable).
+     */
+    ByteBuffer.prototype.getBufferIdentifier = function () {
+        if (this.bytes_.length < this.position_ + constants_1.SIZEOF_INT +
+            constants_1.FILE_IDENTIFIER_LENGTH) {
+            throw new Error('FlatBuffers: ByteBuffer is too short to contain an identifier.');
+        }
+        var result = "";
+        for (var i = 0; i < constants_1.FILE_IDENTIFIER_LENGTH; i++) {
+            result += String.fromCharCode(this.readInt8(this.position_ + constants_1.SIZEOF_INT + i));
+        }
+        return result;
+    };
+    /**
+     * Look up a field in the vtable, return an offset into the object, or 0 if the
+     * field is not present.
+     */
+    ByteBuffer.prototype.__offset = function (bb_pos, vtable_offset) {
+        var vtable = bb_pos - this.readInt32(bb_pos);
+        return vtable_offset < this.readInt16(vtable) ? this.readInt16(vtable + vtable_offset) : 0;
+    };
+    /**
+     * Initialize any Table-derived type to point to the union at the given offset.
+     */
+    ByteBuffer.prototype.__union = function (t, offset) {
+        t.bb_pos = offset + this.readInt32(offset);
+        t.bb = this;
+        return t;
+    };
+    /**
+     * Create a JavaScript string from UTF-8 data stored inside the FlatBuffer.
+     * This allocates a new string and converts to wide chars upon each access.
+     *
+     * To avoid the conversion to UTF-16, pass Encoding.UTF8_BYTES as
+     * the "optionalEncoding" argument. This is useful for avoiding conversion to
+     * and from UTF-16 when the data will just be packaged back up in another
+     * FlatBuffer later on.
+     *
+     * @param offset
+     * @param opt_encoding Defaults to UTF16_STRING
+     */
+    ByteBuffer.prototype.__string = function (offset, opt_encoding) {
+        offset += this.readInt32(offset);
+        var length = this.readInt32(offset);
+        var result = '';
+        var i = 0;
+        offset += constants_1.SIZEOF_INT;
+        if (opt_encoding === encoding_1.Encoding.UTF8_BYTES) {
+            return this.bytes_.subarray(offset, offset + length);
+        }
+        while (i < length) {
+            var codePoint = void 0;
+            // Decode UTF-8
+            var a = this.readUint8(offset + i++);
+            if (a < 0xC0) {
+                codePoint = a;
+            }
+            else {
+                var b = this.readUint8(offset + i++);
+                if (a < 0xE0) {
+                    codePoint =
+                        ((a & 0x1F) << 6) |
+                            (b & 0x3F);
+                }
+                else {
+                    var c = this.readUint8(offset + i++);
+                    if (a < 0xF0) {
+                        codePoint =
+                            ((a & 0x0F) << 12) |
+                                ((b & 0x3F) << 6) |
+                                (c & 0x3F);
+                    }
+                    else {
+                        var d = this.readUint8(offset + i++);
+                        codePoint =
+                            ((a & 0x07) << 18) |
+                                ((b & 0x3F) << 12) |
+                                ((c & 0x3F) << 6) |
+                                (d & 0x3F);
+                    }
+                }
+            }
+            // Encode UTF-16
+            if (codePoint < 0x10000) {
+                result += String.fromCharCode(codePoint);
+            }
+            else {
+                codePoint -= 0x10000;
+                result += String.fromCharCode((codePoint >> 10) + 0xD800, (codePoint & ((1 << 10) - 1)) + 0xDC00);
+            }
+        }
+        return result;
+    };
+    /**
+     * Handle unions that can contain string as its member, if a Table-derived type then initialize it,
+     * if a string then return a new one
+     *
+     * WARNING: strings are immutable in JS so we can't change the string that the user gave us, this
+     * makes the behaviour of __union_with_string different compared to __union
+     */
+    ByteBuffer.prototype.__union_with_string = function (o, offset) {
+        if (typeof o === 'string') {
+            return this.__string(offset);
+        }
+        return this.__union(o, offset);
+    };
+    /**
+     * Retrieve the relative offset stored at "offset"
+     */
+    ByteBuffer.prototype.__indirect = function (offset) {
+        return offset + this.readInt32(offset);
+    };
+    /**
+     * Get the start of data of a vector whose offset is stored at "offset" in this object.
+     */
+    ByteBuffer.prototype.__vector = function (offset) {
+        return offset + this.readInt32(offset) + constants_1.SIZEOF_INT; // data starts after the length
+    };
+    /**
+     * Get the length of a vector whose offset is stored at "offset" in this object.
+     */
+    ByteBuffer.prototype.__vector_len = function (offset) {
+        return this.readInt32(offset + this.readInt32(offset));
+    };
+    ByteBuffer.prototype.__has_identifier = function (ident) {
+        if (ident.length != constants_1.FILE_IDENTIFIER_LENGTH) {
+            throw new Error('FlatBuffers: file identifier must be length ' +
+                constants_1.FILE_IDENTIFIER_LENGTH);
+        }
+        for (var i = 0; i < constants_1.FILE_IDENTIFIER_LENGTH; i++) {
+            if (ident.charCodeAt(i) != this.readInt8(this.position() + constants_1.SIZEOF_INT + i)) {
+                return false;
+            }
+        }
+        return true;
+    };
+    /**
+     * A helper function to avoid generated code depending on this file directly.
+     */
+    ByteBuffer.prototype.createLong = function (low, high) {
+        return long_1.Long.create(low, high);
+    };
+    /**
+     * A helper function for generating list for obj api
+     */
+    ByteBuffer.prototype.createScalarList = function (listAccessor, listLength) {
+        var ret = [];
+        for (var i = 0; i < listLength; ++i) {
+            if (listAccessor(i) !== null) {
+                ret.push(listAccessor(i));
+            }
+        }
+        return ret;
+    };
+    /**
+     * A helper function for generating list for obj api
+     * @param listAccessor function that accepts an index and return data at that index
+     * @param listLength listLength
+     * @param res result list
+     */
+    ByteBuffer.prototype.createObjList = function (listAccessor, listLength) {
+        var ret = [];
+        for (var i = 0; i < listLength; ++i) {
+            var val = listAccessor(i);
+            if (val !== null) {
+                ret.push(val.unpack());
+            }
+        }
+        return ret;
+    };
+    return ByteBuffer;
+}());
+exports.ByteBuffer = ByteBuffer;
diff --git a/igv_component/node_modules/flatbuffers/js/constants.d.ts b/igv_component/node_modules/flatbuffers/js/constants.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b765d6376efb218013e4ea885ce8c6ef06e08250
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/constants.d.ts
@@ -0,0 +1,4 @@
+export declare const SIZEOF_SHORT = 2;
+export declare const SIZEOF_INT = 4;
+export declare const FILE_IDENTIFIER_LENGTH = 4;
+export declare const SIZE_PREFIX_LENGTH = 4;
diff --git a/igv_component/node_modules/flatbuffers/js/constants.js b/igv_component/node_modules/flatbuffers/js/constants.js
new file mode 100644
index 0000000000000000000000000000000000000000..450e2a11010479cd65c3d5ddbd49f367491f987c
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/constants.js
@@ -0,0 +1,7 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.SIZE_PREFIX_LENGTH = exports.FILE_IDENTIFIER_LENGTH = exports.SIZEOF_INT = exports.SIZEOF_SHORT = void 0;
+exports.SIZEOF_SHORT = 2;
+exports.SIZEOF_INT = 4;
+exports.FILE_IDENTIFIER_LENGTH = 4;
+exports.SIZE_PREFIX_LENGTH = 4;
diff --git a/igv_component/node_modules/flatbuffers/js/encoding.d.ts b/igv_component/node_modules/flatbuffers/js/encoding.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..4d6dcb56f5f6c454eabd76a3ebb3c358ad5b2390
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/encoding.d.ts
@@ -0,0 +1,4 @@
+export declare enum Encoding {
+    UTF8_BYTES = 1,
+    UTF16_STRING = 2
+}
diff --git a/igv_component/node_modules/flatbuffers/js/encoding.js b/igv_component/node_modules/flatbuffers/js/encoding.js
new file mode 100644
index 0000000000000000000000000000000000000000..abe2e2976298941ab9bc427d419700c3f805efa4
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/encoding.js
@@ -0,0 +1,8 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Encoding = void 0;
+var Encoding;
+(function (Encoding) {
+    Encoding[Encoding["UTF8_BYTES"] = 1] = "UTF8_BYTES";
+    Encoding[Encoding["UTF16_STRING"] = 2] = "UTF16_STRING";
+})(Encoding = exports.Encoding || (exports.Encoding = {}));
diff --git a/igv_component/node_modules/flatbuffers/js/flatbuffers.d.ts b/igv_component/node_modules/flatbuffers/js/flatbuffers.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..bf517590f20fbb32970c1567574db0161b97e568
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flatbuffers.d.ts
@@ -0,0 +1,10 @@
+export { SIZEOF_SHORT } from './constants';
+export { SIZEOF_INT } from './constants';
+export { FILE_IDENTIFIER_LENGTH } from './constants';
+export { SIZE_PREFIX_LENGTH } from './constants';
+export { Table, Offset } from './types';
+export { int32, float32, float64, isLittleEndian } from './utils';
+export { Long, createLong } from './long';
+export { Encoding } from './encoding';
+export { Builder } from './builder';
+export { ByteBuffer } from './byte-buffer';
diff --git a/igv_component/node_modules/flatbuffers/js/flatbuffers.js b/igv_component/node_modules/flatbuffers/js/flatbuffers.js
new file mode 100644
index 0000000000000000000000000000000000000000..d452f3181128d0aa2ad78a9cf7eacdb058821318
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flatbuffers.js
@@ -0,0 +1,25 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ByteBuffer = exports.Builder = exports.Encoding = exports.createLong = exports.Long = exports.isLittleEndian = exports.float64 = exports.float32 = exports.int32 = exports.SIZE_PREFIX_LENGTH = exports.FILE_IDENTIFIER_LENGTH = exports.SIZEOF_INT = exports.SIZEOF_SHORT = void 0;
+var constants_1 = require("./constants");
+Object.defineProperty(exports, "SIZEOF_SHORT", { enumerable: true, get: function () { return constants_1.SIZEOF_SHORT; } });
+var constants_2 = require("./constants");
+Object.defineProperty(exports, "SIZEOF_INT", { enumerable: true, get: function () { return constants_2.SIZEOF_INT; } });
+var constants_3 = require("./constants");
+Object.defineProperty(exports, "FILE_IDENTIFIER_LENGTH", { enumerable: true, get: function () { return constants_3.FILE_IDENTIFIER_LENGTH; } });
+var constants_4 = require("./constants");
+Object.defineProperty(exports, "SIZE_PREFIX_LENGTH", { enumerable: true, get: function () { return constants_4.SIZE_PREFIX_LENGTH; } });
+var utils_1 = require("./utils");
+Object.defineProperty(exports, "int32", { enumerable: true, get: function () { return utils_1.int32; } });
+Object.defineProperty(exports, "float32", { enumerable: true, get: function () { return utils_1.float32; } });
+Object.defineProperty(exports, "float64", { enumerable: true, get: function () { return utils_1.float64; } });
+Object.defineProperty(exports, "isLittleEndian", { enumerable: true, get: function () { return utils_1.isLittleEndian; } });
+var long_1 = require("./long");
+Object.defineProperty(exports, "Long", { enumerable: true, get: function () { return long_1.Long; } });
+Object.defineProperty(exports, "createLong", { enumerable: true, get: function () { return long_1.createLong; } });
+var encoding_1 = require("./encoding");
+Object.defineProperty(exports, "Encoding", { enumerable: true, get: function () { return encoding_1.Encoding; } });
+var builder_1 = require("./builder");
+Object.defineProperty(exports, "Builder", { enumerable: true, get: function () { return builder_1.Builder; } });
+var byte_buffer_1 = require("./byte-buffer");
+Object.defineProperty(exports, "ByteBuffer", { enumerable: true, get: function () { return byte_buffer_1.ByteBuffer; } });
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers.d.ts b/igv_component/node_modules/flatbuffers/js/flexbuffers.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d22a937dd86e5455910f6ea62d51dd2e00094263
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers.d.ts
@@ -0,0 +1,5 @@
+import { Builder } from './flexbuffers/builder';
+export { toReference } from './flexbuffers/reference';
+export declare function builder(): Builder;
+export declare function toObject(buffer: ArrayBuffer): unknown;
+export declare function encode(object: unknown, size?: number, deduplicateStrings?: boolean, deduplicateKeys?: boolean, deduplicateKeyVectors?: boolean): Uint8Array;
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers.js b/igv_component/node_modules/flatbuffers/js/flexbuffers.js
new file mode 100644
index 0000000000000000000000000000000000000000..424b998f290e32f84ccda05e75257f72f78712cd
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers.js
@@ -0,0 +1,26 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.encode = exports.toObject = exports.builder = exports.toReference = void 0;
+/* eslint-disable @typescript-eslint/no-namespace */
+var builder_1 = require("./flexbuffers/builder");
+var reference_1 = require("./flexbuffers/reference");
+var reference_2 = require("./flexbuffers/reference");
+Object.defineProperty(exports, "toReference", { enumerable: true, get: function () { return reference_2.toReference; } });
+function builder() {
+    return new builder_1.Builder();
+}
+exports.builder = builder;
+function toObject(buffer) {
+    return (0, reference_1.toReference)(buffer).toObject();
+}
+exports.toObject = toObject;
+function encode(object, size, deduplicateStrings, deduplicateKeys, deduplicateKeyVectors) {
+    if (size === void 0) { size = 2048; }
+    if (deduplicateStrings === void 0) { deduplicateStrings = true; }
+    if (deduplicateKeys === void 0) { deduplicateKeys = true; }
+    if (deduplicateKeyVectors === void 0) { deduplicateKeyVectors = true; }
+    var builder = new builder_1.Builder(size > 0 ? size : 2048, deduplicateStrings, deduplicateKeys, deduplicateKeyVectors);
+    builder.add(object);
+    return builder.finish();
+}
+exports.encode = encode;
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/bit-width-util.d.ts b/igv_component/node_modules/flatbuffers/js/flexbuffers/bit-width-util.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..347ee70004d9d709ad4b84fc30789417a01e45aa
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/bit-width-util.d.ts
@@ -0,0 +1,7 @@
+import { BitWidth } from './bit-width';
+export declare function toByteWidth(bitWidth: BitWidth): number;
+export declare function iwidth(value: number | bigint): BitWidth;
+export declare function fwidth(value: number): BitWidth;
+export declare function uwidth(value: number): BitWidth;
+export declare function fromByteWidth(value: number): BitWidth;
+export declare function paddingSize(bufSize: number, scalarSize: number): number;
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/bit-width-util.js b/igv_component/node_modules/flatbuffers/js/flexbuffers/bit-width-util.js
new file mode 100644
index 0000000000000000000000000000000000000000..16f9d2669db773d947072a55cb872d52f15d21bd
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/bit-width-util.js
@@ -0,0 +1,46 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.paddingSize = exports.fromByteWidth = exports.uwidth = exports.fwidth = exports.iwidth = exports.toByteWidth = void 0;
+var bit_width_1 = require("./bit-width");
+function toByteWidth(bitWidth) {
+    return 1 << bitWidth;
+}
+exports.toByteWidth = toByteWidth;
+function iwidth(value) {
+    if (value >= -128 && value <= 127)
+        return bit_width_1.BitWidth.WIDTH8;
+    if (value >= -32768 && value <= 32767)
+        return bit_width_1.BitWidth.WIDTH16;
+    if (value >= -2147483648 && value <= 2147483647)
+        return bit_width_1.BitWidth.WIDTH32;
+    return bit_width_1.BitWidth.WIDTH64;
+}
+exports.iwidth = iwidth;
+function fwidth(value) {
+    return value === Math.fround(value) ? bit_width_1.BitWidth.WIDTH32 : bit_width_1.BitWidth.WIDTH64;
+}
+exports.fwidth = fwidth;
+function uwidth(value) {
+    if (value <= 255)
+        return bit_width_1.BitWidth.WIDTH8;
+    if (value <= 65535)
+        return bit_width_1.BitWidth.WIDTH16;
+    if (value <= 4294967295)
+        return bit_width_1.BitWidth.WIDTH32;
+    return bit_width_1.BitWidth.WIDTH64;
+}
+exports.uwidth = uwidth;
+function fromByteWidth(value) {
+    if (value === 1)
+        return bit_width_1.BitWidth.WIDTH8;
+    if (value === 2)
+        return bit_width_1.BitWidth.WIDTH16;
+    if (value === 4)
+        return bit_width_1.BitWidth.WIDTH32;
+    return bit_width_1.BitWidth.WIDTH64;
+}
+exports.fromByteWidth = fromByteWidth;
+function paddingSize(bufSize, scalarSize) {
+    return (~bufSize + 1) & (scalarSize - 1);
+}
+exports.paddingSize = paddingSize;
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/bit-width.d.ts b/igv_component/node_modules/flatbuffers/js/flexbuffers/bit-width.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..12b25e049d7a3d26d93eb0f2cc164090424d3684
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/bit-width.d.ts
@@ -0,0 +1,6 @@
+export declare enum BitWidth {
+    WIDTH8 = 0,
+    WIDTH16 = 1,
+    WIDTH32 = 2,
+    WIDTH64 = 3
+}
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/bit-width.js b/igv_component/node_modules/flatbuffers/js/flexbuffers/bit-width.js
new file mode 100644
index 0000000000000000000000000000000000000000..d0c5c0569b0b4dc4c831c0ca0716ed80252174ff
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/bit-width.js
@@ -0,0 +1,10 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.BitWidth = void 0;
+var BitWidth;
+(function (BitWidth) {
+    BitWidth[BitWidth["WIDTH8"] = 0] = "WIDTH8";
+    BitWidth[BitWidth["WIDTH16"] = 1] = "WIDTH16";
+    BitWidth[BitWidth["WIDTH32"] = 2] = "WIDTH32";
+    BitWidth[BitWidth["WIDTH64"] = 3] = "WIDTH64";
+})(BitWidth = exports.BitWidth || (exports.BitWidth = {}));
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/builder.d.ts b/igv_component/node_modules/flatbuffers/js/flexbuffers/builder.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..db961952b078fb87ef42ef1cf4922b761e19d93a
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/builder.d.ts
@@ -0,0 +1,59 @@
+import { BitWidth } from './bit-width';
+import { StackValue } from './stack-value';
+interface StackPointer {
+    stackPosition: number;
+    isVector: boolean;
+    presorted?: boolean;
+}
+export declare class Builder {
+    private dedupStrings;
+    private dedupKeys;
+    private dedupKeyVectors;
+    buffer: ArrayBuffer;
+    view: DataView;
+    readonly stack: Array<StackValue>;
+    readonly stackPointers: Array<StackPointer>;
+    offset: number;
+    finished: boolean;
+    readonly stringLookup: Record<string, StackValue>;
+    readonly keyLookup: Record<string, StackValue>;
+    readonly keyVectorLookup: Record<string, StackValue>;
+    readonly indirectIntLookup: Record<number, StackValue>;
+    readonly indirectUIntLookup: Record<number, StackValue>;
+    readonly indirectFloatLookup: Record<number, StackValue>;
+    constructor(size?: number, dedupStrings?: boolean, dedupKeys?: boolean, dedupKeyVectors?: boolean);
+    private align;
+    computeOffset(newValueSize: number): number;
+    pushInt(value: number, width: BitWidth): void;
+    pushUInt(value: number, width: BitWidth): void;
+    private writeInt;
+    private writeUInt;
+    private writeBlob;
+    private writeString;
+    private writeKey;
+    private writeStackValue;
+    private integrityCheckOnValueAddition;
+    private integrityCheckOnKeyAddition;
+    startVector(): void;
+    startMap(presorted?: boolean): void;
+    private endVector;
+    private endMap;
+    private sort;
+    end(): void;
+    private createVector;
+    private nullStackValue;
+    private boolStackValue;
+    private intStackValue;
+    private uintStackValue;
+    private floatStackValue;
+    private offsetStackValue;
+    private finishBuffer;
+    add(value: undefined | null | boolean | bigint | number | DataView | string | Array<unknown> | Record<string, unknown> | unknown): void;
+    finish(): Uint8Array;
+    isFinished(): boolean;
+    addKey(key: string): void;
+    addInt(value: number, indirect?: boolean, deduplicate?: boolean): void;
+    addUInt(value: number, indirect?: boolean, deduplicate?: boolean): void;
+    addFloat(value: number, indirect?: boolean, deduplicate?: boolean): void;
+}
+export {};
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/builder.js b/igv_component/node_modules/flatbuffers/js/flexbuffers/builder.js
new file mode 100644
index 0000000000000000000000000000000000000000..a25c019d37b2177d0099ccd007c110a5c821e45d
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/builder.js
@@ -0,0 +1,541 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Builder = void 0;
+var bit_width_1 = require("./bit-width");
+var bit_width_util_1 = require("./bit-width-util");
+var flexbuffers_util_1 = require("./flexbuffers-util");
+var value_type_1 = require("./value-type");
+var value_type_util_1 = require("./value-type-util");
+var stack_value_1 = require("./stack-value");
+var Builder = /** @class */ (function () {
+    function Builder(size, dedupStrings, dedupKeys, dedupKeyVectors) {
+        if (size === void 0) { size = 2048; }
+        if (dedupStrings === void 0) { dedupStrings = true; }
+        if (dedupKeys === void 0) { dedupKeys = true; }
+        if (dedupKeyVectors === void 0) { dedupKeyVectors = true; }
+        this.dedupStrings = dedupStrings;
+        this.dedupKeys = dedupKeys;
+        this.dedupKeyVectors = dedupKeyVectors;
+        this.stack = [];
+        this.stackPointers = [];
+        this.offset = 0;
+        this.finished = false;
+        this.stringLookup = {};
+        this.keyLookup = {};
+        this.keyVectorLookup = {};
+        this.indirectIntLookup = {};
+        this.indirectUIntLookup = {};
+        this.indirectFloatLookup = {};
+        this.buffer = new ArrayBuffer(size > 0 ? size : 2048);
+        this.view = new DataView(this.buffer);
+    }
+    Builder.prototype.align = function (width) {
+        var byteWidth = (0, bit_width_util_1.toByteWidth)(width);
+        this.offset += (0, bit_width_util_1.paddingSize)(this.offset, byteWidth);
+        return byteWidth;
+    };
+    Builder.prototype.computeOffset = function (newValueSize) {
+        var targetOffset = this.offset + newValueSize;
+        var size = this.buffer.byteLength;
+        var prevSize = size;
+        while (size < targetOffset) {
+            size <<= 1;
+        }
+        if (prevSize < size) {
+            var prevBuffer = this.buffer;
+            this.buffer = new ArrayBuffer(size);
+            this.view = new DataView(this.buffer);
+            new Uint8Array(this.buffer).set(new Uint8Array(prevBuffer), 0);
+        }
+        return targetOffset;
+    };
+    Builder.prototype.pushInt = function (value, width) {
+        if (width === bit_width_1.BitWidth.WIDTH8) {
+            this.view.setInt8(this.offset, value);
+        }
+        else if (width === bit_width_1.BitWidth.WIDTH16) {
+            this.view.setInt16(this.offset, value, true);
+        }
+        else if (width === bit_width_1.BitWidth.WIDTH32) {
+            this.view.setInt32(this.offset, value, true);
+        }
+        else if (width === bit_width_1.BitWidth.WIDTH64) {
+            this.view.setBigInt64(this.offset, BigInt(value), true);
+        }
+        else {
+            throw "Unexpected width: " + width + " for value: " + value;
+        }
+    };
+    Builder.prototype.pushUInt = function (value, width) {
+        if (width === bit_width_1.BitWidth.WIDTH8) {
+            this.view.setUint8(this.offset, value);
+        }
+        else if (width === bit_width_1.BitWidth.WIDTH16) {
+            this.view.setUint16(this.offset, value, true);
+        }
+        else if (width === bit_width_1.BitWidth.WIDTH32) {
+            this.view.setUint32(this.offset, value, true);
+        }
+        else if (width === bit_width_1.BitWidth.WIDTH64) {
+            this.view.setBigUint64(this.offset, BigInt(value), true);
+        }
+        else {
+            throw "Unexpected width: " + width + " for value: " + value;
+        }
+    };
+    Builder.prototype.writeInt = function (value, byteWidth) {
+        var newOffset = this.computeOffset(byteWidth);
+        this.pushInt(value, (0, bit_width_util_1.fromByteWidth)(byteWidth));
+        this.offset = newOffset;
+    };
+    Builder.prototype.writeUInt = function (value, byteWidth) {
+        var newOffset = this.computeOffset(byteWidth);
+        this.pushUInt(value, (0, bit_width_util_1.fromByteWidth)(byteWidth));
+        this.offset = newOffset;
+    };
+    Builder.prototype.writeBlob = function (arrayBuffer) {
+        var length = arrayBuffer.byteLength;
+        var bitWidth = (0, bit_width_util_1.uwidth)(length);
+        var byteWidth = this.align(bitWidth);
+        this.writeUInt(length, byteWidth);
+        var blobOffset = this.offset;
+        var newOffset = this.computeOffset(length);
+        new Uint8Array(this.buffer).set(new Uint8Array(arrayBuffer), blobOffset);
+        this.stack.push(this.offsetStackValue(blobOffset, value_type_1.ValueType.BLOB, bitWidth));
+        this.offset = newOffset;
+    };
+    Builder.prototype.writeString = function (str) {
+        if (this.dedupStrings && Object.prototype.hasOwnProperty.call(this.stringLookup, str)) {
+            this.stack.push(this.stringLookup[str]);
+            return;
+        }
+        var utf8 = (0, flexbuffers_util_1.toUTF8Array)(str);
+        var length = utf8.length;
+        var bitWidth = (0, bit_width_util_1.uwidth)(length);
+        var byteWidth = this.align(bitWidth);
+        this.writeUInt(length, byteWidth);
+        var stringOffset = this.offset;
+        var newOffset = this.computeOffset(length + 1);
+        new Uint8Array(this.buffer).set(utf8, stringOffset);
+        var stackValue = this.offsetStackValue(stringOffset, value_type_1.ValueType.STRING, bitWidth);
+        this.stack.push(stackValue);
+        if (this.dedupStrings) {
+            this.stringLookup[str] = stackValue;
+        }
+        this.offset = newOffset;
+    };
+    Builder.prototype.writeKey = function (str) {
+        if (this.dedupKeys && Object.prototype.hasOwnProperty.call(this.keyLookup, str)) {
+            this.stack.push(this.keyLookup[str]);
+            return;
+        }
+        var utf8 = (0, flexbuffers_util_1.toUTF8Array)(str);
+        var length = utf8.length;
+        var newOffset = this.computeOffset(length + 1);
+        new Uint8Array(this.buffer).set(utf8, this.offset);
+        var stackValue = this.offsetStackValue(this.offset, value_type_1.ValueType.KEY, bit_width_1.BitWidth.WIDTH8);
+        this.stack.push(stackValue);
+        if (this.dedupKeys) {
+            this.keyLookup[str] = stackValue;
+        }
+        this.offset = newOffset;
+    };
+    Builder.prototype.writeStackValue = function (value, byteWidth) {
+        var newOffset = this.computeOffset(byteWidth);
+        if (value.isOffset()) {
+            var relativeOffset = this.offset - value.offset;
+            if (byteWidth === 8 || BigInt(relativeOffset) < (BigInt(1) << BigInt(byteWidth * 8))) {
+                this.writeUInt(relativeOffset, byteWidth);
+            }
+            else {
+                throw "Unexpected size " + byteWidth + ". This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new";
+            }
+        }
+        else {
+            value.writeToBuffer(byteWidth);
+        }
+        this.offset = newOffset;
+    };
+    Builder.prototype.integrityCheckOnValueAddition = function () {
+        if (this.finished) {
+            throw "Adding values after finish is prohibited";
+        }
+        if (this.stackPointers.length !== 0 && this.stackPointers[this.stackPointers.length - 1].isVector === false) {
+            if (this.stack[this.stack.length - 1].type !== value_type_1.ValueType.KEY) {
+                throw "Adding value to a map before adding a key is prohibited";
+            }
+        }
+    };
+    Builder.prototype.integrityCheckOnKeyAddition = function () {
+        if (this.finished) {
+            throw "Adding values after finish is prohibited";
+        }
+        if (this.stackPointers.length === 0 || this.stackPointers[this.stackPointers.length - 1].isVector) {
+            throw "Adding key before starting a map is prohibited";
+        }
+    };
+    Builder.prototype.startVector = function () {
+        this.stackPointers.push({ stackPosition: this.stack.length, isVector: true });
+    };
+    Builder.prototype.startMap = function (presorted) {
+        if (presorted === void 0) { presorted = false; }
+        this.stackPointers.push({ stackPosition: this.stack.length, isVector: false, presorted: presorted });
+    };
+    Builder.prototype.endVector = function (stackPointer) {
+        var vecLength = this.stack.length - stackPointer.stackPosition;
+        var vec = this.createVector(stackPointer.stackPosition, vecLength, 1);
+        this.stack.splice(stackPointer.stackPosition, vecLength);
+        this.stack.push(vec);
+    };
+    Builder.prototype.endMap = function (stackPointer) {
+        if (!stackPointer.presorted) {
+            this.sort(stackPointer);
+        }
+        var keyVectorHash = "";
+        for (var i = stackPointer.stackPosition; i < this.stack.length; i += 2) {
+            keyVectorHash += "," + this.stack[i].offset;
+        }
+        var vecLength = (this.stack.length - stackPointer.stackPosition) >> 1;
+        if (this.dedupKeyVectors && !Object.prototype.hasOwnProperty.call(this.keyVectorLookup, keyVectorHash)) {
+            this.keyVectorLookup[keyVectorHash] = this.createVector(stackPointer.stackPosition, vecLength, 2);
+        }
+        var keysStackValue = this.dedupKeyVectors ? this.keyVectorLookup[keyVectorHash] : this.createVector(stackPointer.stackPosition, vecLength, 2);
+        var valuesStackValue = this.createVector(stackPointer.stackPosition + 1, vecLength, 2, keysStackValue);
+        this.stack.splice(stackPointer.stackPosition, vecLength << 1);
+        this.stack.push(valuesStackValue);
+    };
+    Builder.prototype.sort = function (stackPointer) {
+        var view = this.view;
+        var stack = this.stack;
+        function shouldFlip(v1, v2) {
+            if (v1.type !== value_type_1.ValueType.KEY || v2.type !== value_type_1.ValueType.KEY) {
+                throw "Stack values are not keys " + v1 + " | " + v2 + ". Check if you combined [addKey] with add... method calls properly.";
+            }
+            var c1, c2;
+            var index = 0;
+            do {
+                c1 = view.getUint8(v1.offset + index);
+                c2 = view.getUint8(v2.offset + index);
+                if (c2 < c1)
+                    return true;
+                if (c1 < c2)
+                    return false;
+                index += 1;
+            } while (c1 !== 0 && c2 !== 0);
+            return false;
+        }
+        function swap(stack, flipIndex, i) {
+            if (flipIndex === i)
+                return;
+            var k = stack[flipIndex];
+            var v = stack[flipIndex + 1];
+            stack[flipIndex] = stack[i];
+            stack[flipIndex + 1] = stack[i + 1];
+            stack[i] = k;
+            stack[i + 1] = v;
+        }
+        function selectionSort() {
+            for (var i = stackPointer.stackPosition; i < stack.length; i += 2) {
+                var flipIndex = i;
+                for (var j = i + 2; j < stack.length; j += 2) {
+                    if (shouldFlip(stack[flipIndex], stack[j])) {
+                        flipIndex = j;
+                    }
+                }
+                if (flipIndex !== i) {
+                    swap(stack, flipIndex, i);
+                }
+            }
+        }
+        function smaller(v1, v2) {
+            if (v1.type !== value_type_1.ValueType.KEY || v2.type !== value_type_1.ValueType.KEY) {
+                throw "Stack values are not keys " + v1 + " | " + v2 + ". Check if you combined [addKey] with add... method calls properly.";
+            }
+            if (v1.offset === v2.offset) {
+                return false;
+            }
+            var c1, c2;
+            var index = 0;
+            do {
+                c1 = view.getUint8(v1.offset + index);
+                c2 = view.getUint8(v2.offset + index);
+                if (c1 < c2)
+                    return true;
+                if (c2 < c1)
+                    return false;
+                index += 1;
+            } while (c1 !== 0 && c2 !== 0);
+            return false;
+        }
+        function quickSort(left, right) {
+            if (left < right) {
+                var mid = left + (((right - left) >> 2)) * 2;
+                var pivot = stack[mid];
+                var left_new = left;
+                var right_new = right;
+                do {
+                    while (smaller(stack[left_new], pivot)) {
+                        left_new += 2;
+                    }
+                    while (smaller(pivot, stack[right_new])) {
+                        right_new -= 2;
+                    }
+                    if (left_new <= right_new) {
+                        swap(stack, left_new, right_new);
+                        left_new += 2;
+                        right_new -= 2;
+                    }
+                } while (left_new <= right_new);
+                quickSort(left, right_new);
+                quickSort(left_new, right);
+            }
+        }
+        var sorted = true;
+        for (var i = stackPointer.stackPosition; i < this.stack.length - 2; i += 2) {
+            if (shouldFlip(this.stack[i], this.stack[i + 2])) {
+                sorted = false;
+                break;
+            }
+        }
+        if (!sorted) {
+            if (this.stack.length - stackPointer.stackPosition > 40) {
+                quickSort(stackPointer.stackPosition, this.stack.length - 2);
+            }
+            else {
+                selectionSort();
+            }
+        }
+    };
+    Builder.prototype.end = function () {
+        if (this.stackPointers.length < 1)
+            return;
+        var pointer = this.stackPointers.pop();
+        if (pointer.isVector) {
+            this.endVector(pointer);
+        }
+        else {
+            this.endMap(pointer);
+        }
+    };
+    Builder.prototype.createVector = function (start, vecLength, step, keys) {
+        if (keys === void 0) { keys = null; }
+        var bitWidth = (0, bit_width_util_1.uwidth)(vecLength);
+        var prefixElements = 1;
+        if (keys !== null) {
+            var elementWidth = keys.elementWidth(this.offset, 0);
+            if (elementWidth > bitWidth) {
+                bitWidth = elementWidth;
+            }
+            prefixElements += 2;
+        }
+        var vectorType = value_type_1.ValueType.KEY;
+        var typed = keys === null;
+        for (var i = start; i < this.stack.length; i += step) {
+            var elementWidth = this.stack[i].elementWidth(this.offset, i + prefixElements);
+            if (elementWidth > bitWidth) {
+                bitWidth = elementWidth;
+            }
+            if (i === start) {
+                vectorType = this.stack[i].type;
+                typed = typed && (0, value_type_util_1.isTypedVectorElement)(vectorType);
+            }
+            else {
+                if (vectorType !== this.stack[i].type) {
+                    typed = false;
+                }
+            }
+        }
+        var byteWidth = this.align(bitWidth);
+        var fix = typed && (0, value_type_util_1.isNumber)(vectorType) && vecLength >= 2 && vecLength <= 4;
+        if (keys !== null) {
+            this.writeStackValue(keys, byteWidth);
+            this.writeUInt(1 << keys.width, byteWidth);
+        }
+        if (!fix) {
+            this.writeUInt(vecLength, byteWidth);
+        }
+        var vecOffset = this.offset;
+        for (var i = start; i < this.stack.length; i += step) {
+            this.writeStackValue(this.stack[i], byteWidth);
+        }
+        if (!typed) {
+            for (var i = start; i < this.stack.length; i += step) {
+                this.writeUInt(this.stack[i].storedPackedType(), 1);
+            }
+        }
+        if (keys !== null) {
+            return this.offsetStackValue(vecOffset, value_type_1.ValueType.MAP, bitWidth);
+        }
+        if (typed) {
+            var vType = (0, value_type_util_1.toTypedVector)(vectorType, fix ? vecLength : 0);
+            return this.offsetStackValue(vecOffset, vType, bitWidth);
+        }
+        return this.offsetStackValue(vecOffset, value_type_1.ValueType.VECTOR, bitWidth);
+    };
+    Builder.prototype.nullStackValue = function () {
+        return new stack_value_1.StackValue(this, value_type_1.ValueType.NULL, bit_width_1.BitWidth.WIDTH8);
+    };
+    Builder.prototype.boolStackValue = function (value) {
+        return new stack_value_1.StackValue(this, value_type_1.ValueType.BOOL, bit_width_1.BitWidth.WIDTH8, value);
+    };
+    Builder.prototype.intStackValue = function (value) {
+        return new stack_value_1.StackValue(this, value_type_1.ValueType.INT, (0, bit_width_util_1.iwidth)(value), value);
+    };
+    Builder.prototype.uintStackValue = function (value) {
+        return new stack_value_1.StackValue(this, value_type_1.ValueType.UINT, (0, bit_width_util_1.uwidth)(value), value);
+    };
+    Builder.prototype.floatStackValue = function (value) {
+        return new stack_value_1.StackValue(this, value_type_1.ValueType.FLOAT, (0, bit_width_util_1.fwidth)(value), value);
+    };
+    Builder.prototype.offsetStackValue = function (offset, valueType, bitWidth) {
+        return new stack_value_1.StackValue(this, valueType, bitWidth, null, offset);
+    };
+    Builder.prototype.finishBuffer = function () {
+        if (this.stack.length !== 1) {
+            throw "Stack has to be exactly 1, but it is " + this.stack.length + ". You have to end all started vectors and maps before calling [finish]";
+        }
+        var value = this.stack[0];
+        var byteWidth = this.align(value.elementWidth(this.offset, 0));
+        this.writeStackValue(value, byteWidth);
+        this.writeUInt(value.storedPackedType(), 1);
+        this.writeUInt(byteWidth, 1);
+        this.finished = true;
+    };
+    Builder.prototype.add = function (value) {
+        this.integrityCheckOnValueAddition();
+        if (typeof value === 'undefined') {
+            throw "You need to provide a value";
+        }
+        if (value === null) {
+            this.stack.push(this.nullStackValue());
+        }
+        else if (typeof value === "boolean") {
+            this.stack.push(this.boolStackValue(value));
+        }
+        else if (typeof value === "bigint") {
+            this.stack.push(this.intStackValue(value));
+        }
+        else if (typeof value == 'number') {
+            if (Number.isInteger(value)) {
+                this.stack.push(this.intStackValue(value));
+            }
+            else {
+                this.stack.push(this.floatStackValue(value));
+            }
+        }
+        else if (ArrayBuffer.isView(value)) {
+            this.writeBlob(value.buffer);
+        }
+        else if (typeof value === 'string' || value instanceof String) {
+            this.writeString(value);
+        }
+        else if (Array.isArray(value)) {
+            this.startVector();
+            for (var i = 0; i < value.length; i++) {
+                this.add(value[i]);
+            }
+            this.end();
+        }
+        else if (typeof value === 'object') {
+            var properties = Object.getOwnPropertyNames(value).sort();
+            this.startMap(true);
+            for (var i = 0; i < properties.length; i++) {
+                var key = properties[i];
+                this.addKey(key);
+                this.add(value[key]);
+            }
+            this.end();
+        }
+        else {
+            throw "Unexpected value input " + value;
+        }
+    };
+    Builder.prototype.finish = function () {
+        if (!this.finished) {
+            this.finishBuffer();
+        }
+        var result = this.buffer.slice(0, this.offset);
+        return new Uint8Array(result);
+    };
+    Builder.prototype.isFinished = function () {
+        return this.finished;
+    };
+    Builder.prototype.addKey = function (key) {
+        this.integrityCheckOnKeyAddition();
+        this.writeKey(key);
+    };
+    Builder.prototype.addInt = function (value, indirect, deduplicate) {
+        if (indirect === void 0) { indirect = false; }
+        if (deduplicate === void 0) { deduplicate = false; }
+        this.integrityCheckOnValueAddition();
+        if (!indirect) {
+            this.stack.push(this.intStackValue(value));
+            return;
+        }
+        if (deduplicate && Object.prototype.hasOwnProperty.call(this.indirectIntLookup, value)) {
+            this.stack.push(this.indirectIntLookup[value]);
+            return;
+        }
+        var stackValue = this.intStackValue(value);
+        var byteWidth = this.align(stackValue.width);
+        var newOffset = this.computeOffset(byteWidth);
+        var valueOffset = this.offset;
+        stackValue.writeToBuffer(byteWidth);
+        var stackOffset = this.offsetStackValue(valueOffset, value_type_1.ValueType.INDIRECT_INT, stackValue.width);
+        this.stack.push(stackOffset);
+        this.offset = newOffset;
+        if (deduplicate) {
+            this.indirectIntLookup[value] = stackOffset;
+        }
+    };
+    Builder.prototype.addUInt = function (value, indirect, deduplicate) {
+        if (indirect === void 0) { indirect = false; }
+        if (deduplicate === void 0) { deduplicate = false; }
+        this.integrityCheckOnValueAddition();
+        if (!indirect) {
+            this.stack.push(this.uintStackValue(value));
+            return;
+        }
+        if (deduplicate && Object.prototype.hasOwnProperty.call(this.indirectUIntLookup, value)) {
+            this.stack.push(this.indirectUIntLookup[value]);
+            return;
+        }
+        var stackValue = this.uintStackValue(value);
+        var byteWidth = this.align(stackValue.width);
+        var newOffset = this.computeOffset(byteWidth);
+        var valueOffset = this.offset;
+        stackValue.writeToBuffer(byteWidth);
+        var stackOffset = this.offsetStackValue(valueOffset, value_type_1.ValueType.INDIRECT_UINT, stackValue.width);
+        this.stack.push(stackOffset);
+        this.offset = newOffset;
+        if (deduplicate) {
+            this.indirectUIntLookup[value] = stackOffset;
+        }
+    };
+    Builder.prototype.addFloat = function (value, indirect, deduplicate) {
+        if (indirect === void 0) { indirect = false; }
+        if (deduplicate === void 0) { deduplicate = false; }
+        this.integrityCheckOnValueAddition();
+        if (!indirect) {
+            this.stack.push(this.floatStackValue(value));
+            return;
+        }
+        if (deduplicate && Object.prototype.hasOwnProperty.call(this.indirectFloatLookup, value)) {
+            this.stack.push(this.indirectFloatLookup[value]);
+            return;
+        }
+        var stackValue = this.floatStackValue(value);
+        var byteWidth = this.align(stackValue.width);
+        var newOffset = this.computeOffset(byteWidth);
+        var valueOffset = this.offset;
+        stackValue.writeToBuffer(byteWidth);
+        var stackOffset = this.offsetStackValue(valueOffset, value_type_1.ValueType.INDIRECT_FLOAT, stackValue.width);
+        this.stack.push(stackOffset);
+        this.offset = newOffset;
+        if (deduplicate) {
+            this.indirectFloatLookup[value] = stackOffset;
+        }
+    };
+    return Builder;
+}());
+exports.Builder = Builder;
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/flexbuffers-util.d.ts b/igv_component/node_modules/flatbuffers/js/flexbuffers/flexbuffers-util.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b55a764b61fa38f2ea363bc08181e2fe175a55ce
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/flexbuffers-util.d.ts
@@ -0,0 +1,2 @@
+export declare function fromUTF8Array(data: BufferSource): string;
+export declare function toUTF8Array(str: string): Uint8Array;
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/flexbuffers-util.js b/igv_component/node_modules/flatbuffers/js/flexbuffers/flexbuffers-util.js
new file mode 100644
index 0000000000000000000000000000000000000000..0d4e166ba444be3a683224893cf94a5db5305892
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/flexbuffers-util.js
@@ -0,0 +1,13 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.toUTF8Array = exports.fromUTF8Array = void 0;
+function fromUTF8Array(data) {
+    var decoder = new TextDecoder();
+    return decoder.decode(data);
+}
+exports.fromUTF8Array = fromUTF8Array;
+function toUTF8Array(str) {
+    var encoder = new TextEncoder();
+    return encoder.encode(str);
+}
+exports.toUTF8Array = toUTF8Array;
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/reference-util.d.ts b/igv_component/node_modules/flatbuffers/js/flexbuffers/reference-util.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..74ba18ad918b5e675d403173c251d26f22e78bcc
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/reference-util.d.ts
@@ -0,0 +1,11 @@
+import { Reference } from './reference';
+import { Long } from '../long';
+export declare function validateOffset(dataView: DataView, offset: number, width: number): void;
+export declare function readInt(dataView: DataView, offset: number, width: number): number | Long | bigint;
+export declare function readUInt(dataView: DataView, offset: number, width: number): number | Long | bigint;
+export declare function readFloat(dataView: DataView, offset: number, width: number): number;
+export declare function indirect(dataView: DataView, offset: number, width: number): number;
+export declare function keyIndex(key: string, dataView: DataView, offset: number, parentWidth: number, byteWidth: number, length: number): number | null;
+export declare function diffKeys(input: Uint8Array, index: number, dataView: DataView, offset: number, width: number): number;
+export declare function valueForIndexWithKey(index: number, key: string, dataView: DataView, offset: number, parentWidth: number, byteWidth: number, length: number, path: string): Reference;
+export declare function keyForIndex(index: number, dataView: DataView, offset: number, parentWidth: number, byteWidth: number): string;
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/reference-util.js b/igv_component/node_modules/flatbuffers/js/flexbuffers/reference-util.js
new file mode 100644
index 0000000000000000000000000000000000000000..2937eefaf38c95a691c797cecd2c94ba6330eda8
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/reference-util.js
@@ -0,0 +1,129 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.keyForIndex = exports.valueForIndexWithKey = exports.diffKeys = exports.keyIndex = exports.indirect = exports.readFloat = exports.readUInt = exports.readInt = exports.validateOffset = void 0;
+var bit_width_1 = require("./bit-width");
+var bit_width_util_1 = require("./bit-width-util");
+var flexbuffers_util_1 = require("./flexbuffers-util");
+var reference_1 = require("./reference");
+var long_1 = require("../long");
+function validateOffset(dataView, offset, width) {
+    if (dataView.byteLength <= offset + width || (offset & ((0, bit_width_util_1.toByteWidth)(width) - 1)) !== 0) {
+        throw "Bad offset: " + offset + ", width: " + width;
+    }
+}
+exports.validateOffset = validateOffset;
+function readInt(dataView, offset, width) {
+    if (width < 2) {
+        if (width < 1) {
+            return dataView.getInt8(offset);
+        }
+        else {
+            return dataView.getInt16(offset, true);
+        }
+    }
+    else {
+        if (width < 3) {
+            return dataView.getInt32(offset, true);
+        }
+        else {
+            if (dataView.setBigInt64 === undefined) {
+                return new long_1.Long(dataView.getUint32(offset, true), dataView.getUint32(offset + 4, true));
+            }
+            return dataView.getBigInt64(offset, true);
+        }
+    }
+}
+exports.readInt = readInt;
+function readUInt(dataView, offset, width) {
+    if (width < 2) {
+        if (width < 1) {
+            return dataView.getUint8(offset);
+        }
+        else {
+            return dataView.getUint16(offset, true);
+        }
+    }
+    else {
+        if (width < 3) {
+            return dataView.getUint32(offset, true);
+        }
+        else {
+            if (dataView.getBigUint64 === undefined) {
+                return new long_1.Long(dataView.getUint32(offset, true), dataView.getUint32(offset + 4, true));
+            }
+            return dataView.getBigUint64(offset, true);
+        }
+    }
+}
+exports.readUInt = readUInt;
+function readFloat(dataView, offset, width) {
+    if (width < bit_width_1.BitWidth.WIDTH32) {
+        throw "Bad width: " + width;
+    }
+    if (width === bit_width_1.BitWidth.WIDTH32) {
+        return dataView.getFloat32(offset, true);
+    }
+    return dataView.getFloat64(offset, true);
+}
+exports.readFloat = readFloat;
+function indirect(dataView, offset, width) {
+    var step = readUInt(dataView, offset, width);
+    return offset - step;
+}
+exports.indirect = indirect;
+function keyIndex(key, dataView, offset, parentWidth, byteWidth, length) {
+    var input = (0, flexbuffers_util_1.toUTF8Array)(key);
+    var keysVectorOffset = indirect(dataView, offset, parentWidth) - byteWidth * 3;
+    var bitWidth = (0, bit_width_util_1.fromByteWidth)(byteWidth);
+    var indirectOffset = keysVectorOffset - readUInt(dataView, keysVectorOffset, bitWidth);
+    var _byteWidth = readUInt(dataView, keysVectorOffset + byteWidth, bitWidth);
+    var low = 0;
+    var high = length - 1;
+    while (low <= high) {
+        var mid = (high + low) >> 1;
+        var dif = diffKeys(input, mid, dataView, indirectOffset, _byteWidth);
+        if (dif === 0)
+            return mid;
+        if (dif < 0) {
+            high = mid - 1;
+        }
+        else {
+            low = mid + 1;
+        }
+    }
+    return null;
+}
+exports.keyIndex = keyIndex;
+function diffKeys(input, index, dataView, offset, width) {
+    var keyOffset = offset + index * width;
+    var keyIndirectOffset = keyOffset - readUInt(dataView, keyOffset, (0, bit_width_util_1.fromByteWidth)(width));
+    for (var i = 0; i < input.length; i++) {
+        var dif = input[i] - dataView.getUint8(keyIndirectOffset + i);
+        if (dif !== 0) {
+            return dif;
+        }
+    }
+    return dataView.getUint8(keyIndirectOffset + input.length) === 0 ? 0 : -1;
+}
+exports.diffKeys = diffKeys;
+function valueForIndexWithKey(index, key, dataView, offset, parentWidth, byteWidth, length, path) {
+    var _indirect = indirect(dataView, offset, parentWidth);
+    var elementOffset = _indirect + index * byteWidth;
+    var packedType = dataView.getUint8(_indirect + length * byteWidth + index);
+    return new reference_1.Reference(dataView, elementOffset, (0, bit_width_util_1.fromByteWidth)(byteWidth), packedType, path + "/" + key);
+}
+exports.valueForIndexWithKey = valueForIndexWithKey;
+function keyForIndex(index, dataView, offset, parentWidth, byteWidth) {
+    var keysVectorOffset = indirect(dataView, offset, parentWidth) - byteWidth * 3;
+    var bitWidth = (0, bit_width_util_1.fromByteWidth)(byteWidth);
+    var indirectOffset = keysVectorOffset - readUInt(dataView, keysVectorOffset, bitWidth);
+    var _byteWidth = readUInt(dataView, keysVectorOffset + byteWidth, bitWidth);
+    var keyOffset = indirectOffset + index * _byteWidth;
+    var keyIndirectOffset = keyOffset - readUInt(dataView, keyOffset, (0, bit_width_util_1.fromByteWidth)(_byteWidth));
+    var length = 0;
+    while (dataView.getUint8(keyIndirectOffset + length) !== 0) {
+        length++;
+    }
+    return (0, flexbuffers_util_1.fromUTF8Array)(new Uint8Array(dataView.buffer, keyIndirectOffset, length));
+}
+exports.keyForIndex = keyForIndex;
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/reference.d.ts b/igv_component/node_modules/flatbuffers/js/flexbuffers/reference.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e64d91ddd9dd5cd32408b33cbc91110a5e4a5848
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/reference.d.ts
@@ -0,0 +1,32 @@
+import { ValueType } from './value-type';
+import { Long } from '../long';
+export declare function toReference(buffer: ArrayBuffer): Reference;
+export declare class Reference {
+    private dataView;
+    private offset;
+    private parentWidth;
+    private packedType;
+    private path;
+    private readonly byteWidth;
+    private readonly valueType;
+    private _length;
+    constructor(dataView: DataView, offset: number, parentWidth: number, packedType: ValueType, path: string);
+    isNull(): boolean;
+    isNumber(): boolean;
+    isFloat(): boolean;
+    isInt(): boolean;
+    isString(): boolean;
+    isBool(): boolean;
+    isBlob(): boolean;
+    isVector(): boolean;
+    isMap(): boolean;
+    boolValue(): boolean | null;
+    intValue(): number | Long | bigint | null;
+    floatValue(): number | null;
+    numericValue(): number | Long | bigint | null;
+    stringValue(): string | null;
+    blobValue(): Uint8Array | null;
+    get(key: number): Reference;
+    length(): number;
+    toObject(): unknown;
+}
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/reference.js b/igv_component/node_modules/flatbuffers/js/flexbuffers/reference.js
new file mode 100644
index 0000000000000000000000000000000000000000..9f92c70aa8e3c9ed1ce349629bfbd6be72e800ea
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/reference.js
@@ -0,0 +1,184 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Reference = exports.toReference = void 0;
+var bit_width_util_1 = require("./bit-width-util");
+var value_type_1 = require("./value-type");
+var value_type_util_1 = require("./value-type-util");
+var reference_util_1 = require("./reference-util");
+var flexbuffers_util_1 = require("./flexbuffers-util");
+var bit_width_1 = require("./bit-width");
+function toReference(buffer) {
+    var len = buffer.byteLength;
+    if (len < 3) {
+        throw "Buffer needs to be bigger than 3";
+    }
+    var dataView = new DataView(buffer);
+    var byteWidth = dataView.getUint8(len - 1);
+    var packedType = dataView.getUint8(len - 2);
+    var parentWidth = (0, bit_width_util_1.fromByteWidth)(byteWidth);
+    var offset = len - byteWidth - 2;
+    return new Reference(dataView, offset, parentWidth, packedType, "/");
+}
+exports.toReference = toReference;
+var Reference = /** @class */ (function () {
+    function Reference(dataView, offset, parentWidth, packedType, path) {
+        this.dataView = dataView;
+        this.offset = offset;
+        this.parentWidth = parentWidth;
+        this.packedType = packedType;
+        this.path = path;
+        this._length = -1;
+        this.byteWidth = 1 << (packedType & 3);
+        this.valueType = packedType >> 2;
+    }
+    Reference.prototype.isNull = function () { return this.valueType === value_type_1.ValueType.NULL; };
+    Reference.prototype.isNumber = function () { return (0, value_type_util_1.isNumber)(this.valueType) || (0, value_type_util_1.isIndirectNumber)(this.valueType); };
+    Reference.prototype.isFloat = function () { return value_type_1.ValueType.FLOAT === this.valueType || value_type_1.ValueType.INDIRECT_FLOAT === this.valueType; };
+    Reference.prototype.isInt = function () { return this.isNumber() && !this.isFloat(); };
+    Reference.prototype.isString = function () { return value_type_1.ValueType.STRING === this.valueType || value_type_1.ValueType.KEY === this.valueType; };
+    Reference.prototype.isBool = function () { return value_type_1.ValueType.BOOL === this.valueType; };
+    Reference.prototype.isBlob = function () { return value_type_1.ValueType.BLOB === this.valueType; };
+    Reference.prototype.isVector = function () { return (0, value_type_util_1.isAVector)(this.valueType); };
+    Reference.prototype.isMap = function () { return value_type_1.ValueType.MAP === this.valueType; };
+    Reference.prototype.boolValue = function () {
+        if (this.isBool()) {
+            return (0, reference_util_1.readInt)(this.dataView, this.offset, this.parentWidth) > 0;
+        }
+        return null;
+    };
+    Reference.prototype.intValue = function () {
+        if (this.valueType === value_type_1.ValueType.INT) {
+            return (0, reference_util_1.readInt)(this.dataView, this.offset, this.parentWidth);
+        }
+        if (this.valueType === value_type_1.ValueType.UINT) {
+            return (0, reference_util_1.readUInt)(this.dataView, this.offset, this.parentWidth);
+        }
+        if (this.valueType === value_type_1.ValueType.INDIRECT_INT) {
+            return (0, reference_util_1.readInt)(this.dataView, (0, reference_util_1.indirect)(this.dataView, this.offset, this.parentWidth), (0, bit_width_util_1.fromByteWidth)(this.byteWidth));
+        }
+        if (this.valueType === value_type_1.ValueType.INDIRECT_UINT) {
+            return (0, reference_util_1.readUInt)(this.dataView, (0, reference_util_1.indirect)(this.dataView, this.offset, this.parentWidth), (0, bit_width_util_1.fromByteWidth)(this.byteWidth));
+        }
+        return null;
+    };
+    Reference.prototype.floatValue = function () {
+        if (this.valueType === value_type_1.ValueType.FLOAT) {
+            return (0, reference_util_1.readFloat)(this.dataView, this.offset, this.parentWidth);
+        }
+        if (this.valueType === value_type_1.ValueType.INDIRECT_FLOAT) {
+            return (0, reference_util_1.readFloat)(this.dataView, (0, reference_util_1.indirect)(this.dataView, this.offset, this.parentWidth), (0, bit_width_util_1.fromByteWidth)(this.byteWidth));
+        }
+        return null;
+    };
+    Reference.prototype.numericValue = function () { return this.floatValue() || this.intValue(); };
+    Reference.prototype.stringValue = function () {
+        if (this.valueType === value_type_1.ValueType.STRING || this.valueType === value_type_1.ValueType.KEY) {
+            var begin = (0, reference_util_1.indirect)(this.dataView, this.offset, this.parentWidth);
+            return (0, flexbuffers_util_1.fromUTF8Array)(new Uint8Array(this.dataView.buffer, begin, this.length()));
+        }
+        return null;
+    };
+    Reference.prototype.blobValue = function () {
+        if (this.isBlob()) {
+            var begin = (0, reference_util_1.indirect)(this.dataView, this.offset, this.parentWidth);
+            return new Uint8Array(this.dataView.buffer, begin, this.length());
+        }
+        return null;
+    };
+    Reference.prototype.get = function (key) {
+        var length = this.length();
+        if (Number.isInteger(key) && (0, value_type_util_1.isAVector)(this.valueType)) {
+            if (key >= length || key < 0) {
+                throw "Key: [" + key + "] is not applicable on " + this.path + " of " + this.valueType + " length: " + length;
+            }
+            var _indirect = (0, reference_util_1.indirect)(this.dataView, this.offset, this.parentWidth);
+            var elementOffset = _indirect + key * this.byteWidth;
+            var _packedType = this.dataView.getUint8(_indirect + length * this.byteWidth + key);
+            if ((0, value_type_util_1.isTypedVector)(this.valueType)) {
+                var _valueType = (0, value_type_util_1.typedVectorElementType)(this.valueType);
+                _packedType = (0, value_type_util_1.packedType)(_valueType, bit_width_1.BitWidth.WIDTH8);
+            }
+            else if ((0, value_type_util_1.isFixedTypedVector)(this.valueType)) {
+                var _valueType = (0, value_type_util_1.fixedTypedVectorElementType)(this.valueType);
+                _packedType = (0, value_type_util_1.packedType)(_valueType, bit_width_1.BitWidth.WIDTH8);
+            }
+            return new Reference(this.dataView, elementOffset, (0, bit_width_util_1.fromByteWidth)(this.byteWidth), _packedType, this.path + "[" + key + "]");
+        }
+        if (typeof key === 'string') {
+            var index = (0, reference_util_1.keyIndex)(key, this.dataView, this.offset, this.parentWidth, this.byteWidth, length);
+            if (index !== null) {
+                return (0, reference_util_1.valueForIndexWithKey)(index, key, this.dataView, this.offset, this.parentWidth, this.byteWidth, length, this.path);
+            }
+        }
+        throw "Key [" + key + "] is not applicable on " + this.path + " of " + this.valueType;
+    };
+    Reference.prototype.length = function () {
+        var size;
+        if (this._length > -1) {
+            return this._length;
+        }
+        if ((0, value_type_util_1.isFixedTypedVector)(this.valueType)) {
+            this._length = (0, value_type_util_1.fixedTypedVectorElementSize)(this.valueType);
+        }
+        else if (this.valueType === value_type_1.ValueType.BLOB
+            || this.valueType === value_type_1.ValueType.MAP
+            || (0, value_type_util_1.isAVector)(this.valueType)) {
+            this._length = (0, reference_util_1.readUInt)(this.dataView, (0, reference_util_1.indirect)(this.dataView, this.offset, this.parentWidth) - this.byteWidth, (0, bit_width_util_1.fromByteWidth)(this.byteWidth));
+        }
+        else if (this.valueType === value_type_1.ValueType.NULL) {
+            this._length = 0;
+        }
+        else if (this.valueType === value_type_1.ValueType.STRING) {
+            var _indirect = (0, reference_util_1.indirect)(this.dataView, this.offset, this.parentWidth);
+            var sizeByteWidth = this.byteWidth;
+            size = (0, reference_util_1.readUInt)(this.dataView, _indirect - sizeByteWidth, (0, bit_width_util_1.fromByteWidth)(this.byteWidth));
+            while (this.dataView.getInt8(_indirect + size) !== 0) {
+                sizeByteWidth <<= 1;
+                size = (0, reference_util_1.readUInt)(this.dataView, _indirect - sizeByteWidth, (0, bit_width_util_1.fromByteWidth)(this.byteWidth));
+            }
+            this._length = size;
+        }
+        else if (this.valueType === value_type_1.ValueType.KEY) {
+            var _indirect = (0, reference_util_1.indirect)(this.dataView, this.offset, this.parentWidth);
+            size = 1;
+            while (this.dataView.getInt8(_indirect + size) !== 0) {
+                size++;
+            }
+            this._length = size;
+        }
+        else {
+            this._length = 1;
+        }
+        return this._length;
+    };
+    Reference.prototype.toObject = function () {
+        var length = this.length();
+        if (this.isVector()) {
+            var result = [];
+            for (var i = 0; i < length; i++) {
+                result.push(this.get(i).toObject());
+            }
+            return result;
+        }
+        if (this.isMap()) {
+            var result = {};
+            for (var i = 0; i < length; i++) {
+                var key = (0, reference_util_1.keyForIndex)(i, this.dataView, this.offset, this.parentWidth, this.byteWidth);
+                result[key] = (0, reference_util_1.valueForIndexWithKey)(i, key, this.dataView, this.offset, this.parentWidth, this.byteWidth, length, this.path).toObject();
+            }
+            return result;
+        }
+        if (this.isNull()) {
+            return null;
+        }
+        if (this.isBool()) {
+            return this.boolValue();
+        }
+        if (this.isNumber()) {
+            return this.numericValue();
+        }
+        return this.blobValue() || this.stringValue();
+    };
+    return Reference;
+}());
+exports.Reference = Reference;
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/stack-value.d.ts b/igv_component/node_modules/flatbuffers/js/flexbuffers/stack-value.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..3c18a9d4c9741e833e919f2fd9d2bd1f8d56eb13
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/stack-value.d.ts
@@ -0,0 +1,16 @@
+import { Builder } from './builder';
+import { BitWidth } from './bit-width';
+import { ValueType } from './value-type';
+export declare class StackValue {
+    private builder;
+    type: ValueType;
+    width: number;
+    value: number | boolean | null;
+    offset: number;
+    constructor(builder: Builder, type: ValueType, width: number, value?: number | boolean | null, offset?: number);
+    elementWidth(size: number, index: number): BitWidth;
+    writeToBuffer(byteWidth: number): void;
+    storedWidth(width?: BitWidth): BitWidth;
+    storedPackedType(width?: BitWidth): ValueType;
+    isOffset(): boolean;
+}
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/stack-value.js b/igv_component/node_modules/flatbuffers/js/flexbuffers/stack-value.js
new file mode 100644
index 0000000000000000000000000000000000000000..c5caf10ecb65fe1c443bc5967d4e8486a5c7ee4e
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/stack-value.js
@@ -0,0 +1,74 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.StackValue = void 0;
+var bit_width_1 = require("./bit-width");
+var bit_width_util_1 = require("./bit-width-util");
+var value_type_1 = require("./value-type");
+var value_type_util_1 = require("./value-type-util");
+var StackValue = /** @class */ (function () {
+    function StackValue(builder, type, width, value, offset) {
+        if (value === void 0) { value = null; }
+        if (offset === void 0) { offset = 0; }
+        this.builder = builder;
+        this.type = type;
+        this.width = width;
+        this.value = value;
+        this.offset = offset;
+    }
+    StackValue.prototype.elementWidth = function (size, index) {
+        if ((0, value_type_util_1.isInline)(this.type))
+            return this.width;
+        for (var i = 0; i < 4; i++) {
+            var width = 1 << i;
+            var offsetLoc = size + (0, bit_width_util_1.paddingSize)(size, width) + index * width;
+            var offset = offsetLoc - this.offset;
+            var bitWidth = (0, bit_width_util_1.uwidth)(offset);
+            if (1 << bitWidth === width) {
+                return bitWidth;
+            }
+        }
+        throw "Element is unknown. Size: " + size + " at index: " + index + ". This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new";
+    };
+    StackValue.prototype.writeToBuffer = function (byteWidth) {
+        var newOffset = this.builder.computeOffset(byteWidth);
+        if (this.type === value_type_1.ValueType.FLOAT) {
+            if (this.width === bit_width_1.BitWidth.WIDTH32) {
+                this.builder.view.setFloat32(this.builder.offset, this.value, true);
+            }
+            else {
+                this.builder.view.setFloat64(this.builder.offset, this.value, true);
+            }
+        }
+        else if (this.type === value_type_1.ValueType.INT) {
+            var bitWidth = (0, bit_width_util_1.fromByteWidth)(byteWidth);
+            this.builder.pushInt(this.value, bitWidth);
+        }
+        else if (this.type === value_type_1.ValueType.UINT) {
+            var bitWidth = (0, bit_width_util_1.fromByteWidth)(byteWidth);
+            this.builder.pushUInt(this.value, bitWidth);
+        }
+        else if (this.type === value_type_1.ValueType.NULL) {
+            this.builder.pushInt(0, this.width);
+        }
+        else if (this.type === value_type_1.ValueType.BOOL) {
+            this.builder.pushInt(this.value ? 1 : 0, this.width);
+        }
+        else {
+            throw "Unexpected type: " + this.type + ". This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new";
+        }
+        this.offset = newOffset;
+    };
+    StackValue.prototype.storedWidth = function (width) {
+        if (width === void 0) { width = bit_width_1.BitWidth.WIDTH8; }
+        return (0, value_type_util_1.isInline)(this.type) ? Math.max(width, this.width) : this.width;
+    };
+    StackValue.prototype.storedPackedType = function (width) {
+        if (width === void 0) { width = bit_width_1.BitWidth.WIDTH8; }
+        return (0, value_type_util_1.packedType)(this.type, this.storedWidth(width));
+    };
+    StackValue.prototype.isOffset = function () {
+        return !(0, value_type_util_1.isInline)(this.type);
+    };
+    return StackValue;
+}());
+exports.StackValue = StackValue;
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/value-type-util.d.ts b/igv_component/node_modules/flatbuffers/js/flexbuffers/value-type-util.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e0c0a808e1c52379b0669355f4ec82ea12a41a55
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/value-type-util.d.ts
@@ -0,0 +1,13 @@
+import { ValueType } from './value-type';
+export declare function isInline(value: ValueType): boolean;
+export declare function isNumber(value: ValueType): boolean;
+export declare function isIndirectNumber(value: ValueType): boolean;
+export declare function isTypedVectorElement(value: ValueType): boolean;
+export declare function isTypedVector(value: ValueType): boolean;
+export declare function isFixedTypedVector(value: ValueType): boolean;
+export declare function isAVector(value: ValueType): boolean;
+export declare function toTypedVector(valueType: ValueType, length: number): ValueType;
+export declare function typedVectorElementType(valueType: ValueType): ValueType;
+export declare function fixedTypedVectorElementType(valueType: ValueType): ValueType;
+export declare function fixedTypedVectorElementSize(valueType: ValueType): ValueType;
+export declare function packedType(valueType: ValueType, bitWidth: number): ValueType;
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/value-type-util.js b/igv_component/node_modules/flatbuffers/js/flexbuffers/value-type-util.js
new file mode 100644
index 0000000000000000000000000000000000000000..996a6e924077f1c531d20b70ef2b2e7e3e048b23
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/value-type-util.js
@@ -0,0 +1,71 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.packedType = exports.fixedTypedVectorElementSize = exports.fixedTypedVectorElementType = exports.typedVectorElementType = exports.toTypedVector = exports.isAVector = exports.isFixedTypedVector = exports.isTypedVector = exports.isTypedVectorElement = exports.isIndirectNumber = exports.isNumber = exports.isInline = void 0;
+var value_type_1 = require("./value-type");
+function isInline(value) {
+    return value === value_type_1.ValueType.BOOL
+        || value <= value_type_1.ValueType.FLOAT;
+}
+exports.isInline = isInline;
+function isNumber(value) {
+    return value >= value_type_1.ValueType.INT
+        && value <= value_type_1.ValueType.FLOAT;
+}
+exports.isNumber = isNumber;
+function isIndirectNumber(value) {
+    return value >= value_type_1.ValueType.INDIRECT_INT
+        && value <= value_type_1.ValueType.INDIRECT_FLOAT;
+}
+exports.isIndirectNumber = isIndirectNumber;
+function isTypedVectorElement(value) {
+    return value === value_type_1.ValueType.BOOL
+        || (value >= value_type_1.ValueType.INT
+            && value <= value_type_1.ValueType.STRING);
+}
+exports.isTypedVectorElement = isTypedVectorElement;
+function isTypedVector(value) {
+    return value === value_type_1.ValueType.VECTOR_BOOL
+        || (value >= value_type_1.ValueType.VECTOR_INT
+            && value <= value_type_1.ValueType.VECTOR_STRING_DEPRECATED);
+}
+exports.isTypedVector = isTypedVector;
+function isFixedTypedVector(value) {
+    return value >= value_type_1.ValueType.VECTOR_INT2
+        && value <= value_type_1.ValueType.VECTOR_FLOAT4;
+}
+exports.isFixedTypedVector = isFixedTypedVector;
+function isAVector(value) {
+    return isTypedVector(value)
+        || isFixedTypedVector(value)
+        || value === value_type_1.ValueType.VECTOR;
+}
+exports.isAVector = isAVector;
+function toTypedVector(valueType, length) {
+    if (length === 0)
+        return valueType - value_type_1.ValueType.INT + value_type_1.ValueType.VECTOR_INT;
+    if (length === 2)
+        return valueType - value_type_1.ValueType.INT + value_type_1.ValueType.VECTOR_INT2;
+    if (length === 3)
+        return valueType - value_type_1.ValueType.INT + value_type_1.ValueType.VECTOR_INT3;
+    if (length === 4)
+        return valueType - value_type_1.ValueType.INT + value_type_1.ValueType.VECTOR_INT4;
+    throw "Unexpected length " + length;
+}
+exports.toTypedVector = toTypedVector;
+function typedVectorElementType(valueType) {
+    return valueType - value_type_1.ValueType.VECTOR_INT + value_type_1.ValueType.INT;
+}
+exports.typedVectorElementType = typedVectorElementType;
+function fixedTypedVectorElementType(valueType) {
+    return ((valueType - value_type_1.ValueType.VECTOR_INT2) % 3) + value_type_1.ValueType.INT;
+}
+exports.fixedTypedVectorElementType = fixedTypedVectorElementType;
+function fixedTypedVectorElementSize(valueType) {
+    // The x / y >> 0 trick is to have an int division. Suppose to be faster than Math.floor()
+    return (((valueType - value_type_1.ValueType.VECTOR_INT2) / 3) >> 0) + 2;
+}
+exports.fixedTypedVectorElementSize = fixedTypedVectorElementSize;
+function packedType(valueType, bitWidth) {
+    return bitWidth | (valueType << 2);
+}
+exports.packedType = packedType;
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/value-type.d.ts b/igv_component/node_modules/flatbuffers/js/flexbuffers/value-type.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..21d34c06d648b699e208d9be90f02d296830678f
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/value-type.d.ts
@@ -0,0 +1,30 @@
+export declare enum ValueType {
+    NULL = 0,
+    INT = 1,
+    UINT = 2,
+    FLOAT = 3,
+    KEY = 4,
+    STRING = 5,
+    INDIRECT_INT = 6,
+    INDIRECT_UINT = 7,
+    INDIRECT_FLOAT = 8,
+    MAP = 9,
+    VECTOR = 10,
+    VECTOR_INT = 11,
+    VECTOR_UINT = 12,
+    VECTOR_FLOAT = 13,
+    VECTOR_KEY = 14,
+    VECTOR_STRING_DEPRECATED = 15,
+    VECTOR_INT2 = 16,
+    VECTOR_UINT2 = 17,
+    VECTOR_FLOAT2 = 18,
+    VECTOR_INT3 = 19,
+    VECTOR_UINT3 = 20,
+    VECTOR_FLOAT3 = 21,
+    VECTOR_INT4 = 22,
+    VECTOR_UINT4 = 23,
+    VECTOR_FLOAT4 = 24,
+    BLOB = 25,
+    BOOL = 26,
+    VECTOR_BOOL = 36
+}
diff --git a/igv_component/node_modules/flatbuffers/js/flexbuffers/value-type.js b/igv_component/node_modules/flatbuffers/js/flexbuffers/value-type.js
new file mode 100644
index 0000000000000000000000000000000000000000..0ffbf1f8d725c90a24149c761a325d13639298f9
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/flexbuffers/value-type.js
@@ -0,0 +1,34 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.ValueType = void 0;
+var ValueType;
+(function (ValueType) {
+    ValueType[ValueType["NULL"] = 0] = "NULL";
+    ValueType[ValueType["INT"] = 1] = "INT";
+    ValueType[ValueType["UINT"] = 2] = "UINT";
+    ValueType[ValueType["FLOAT"] = 3] = "FLOAT";
+    ValueType[ValueType["KEY"] = 4] = "KEY";
+    ValueType[ValueType["STRING"] = 5] = "STRING";
+    ValueType[ValueType["INDIRECT_INT"] = 6] = "INDIRECT_INT";
+    ValueType[ValueType["INDIRECT_UINT"] = 7] = "INDIRECT_UINT";
+    ValueType[ValueType["INDIRECT_FLOAT"] = 8] = "INDIRECT_FLOAT";
+    ValueType[ValueType["MAP"] = 9] = "MAP";
+    ValueType[ValueType["VECTOR"] = 10] = "VECTOR";
+    ValueType[ValueType["VECTOR_INT"] = 11] = "VECTOR_INT";
+    ValueType[ValueType["VECTOR_UINT"] = 12] = "VECTOR_UINT";
+    ValueType[ValueType["VECTOR_FLOAT"] = 13] = "VECTOR_FLOAT";
+    ValueType[ValueType["VECTOR_KEY"] = 14] = "VECTOR_KEY";
+    ValueType[ValueType["VECTOR_STRING_DEPRECATED"] = 15] = "VECTOR_STRING_DEPRECATED";
+    ValueType[ValueType["VECTOR_INT2"] = 16] = "VECTOR_INT2";
+    ValueType[ValueType["VECTOR_UINT2"] = 17] = "VECTOR_UINT2";
+    ValueType[ValueType["VECTOR_FLOAT2"] = 18] = "VECTOR_FLOAT2";
+    ValueType[ValueType["VECTOR_INT3"] = 19] = "VECTOR_INT3";
+    ValueType[ValueType["VECTOR_UINT3"] = 20] = "VECTOR_UINT3";
+    ValueType[ValueType["VECTOR_FLOAT3"] = 21] = "VECTOR_FLOAT3";
+    ValueType[ValueType["VECTOR_INT4"] = 22] = "VECTOR_INT4";
+    ValueType[ValueType["VECTOR_UINT4"] = 23] = "VECTOR_UINT4";
+    ValueType[ValueType["VECTOR_FLOAT4"] = 24] = "VECTOR_FLOAT4";
+    ValueType[ValueType["BLOB"] = 25] = "BLOB";
+    ValueType[ValueType["BOOL"] = 26] = "BOOL";
+    ValueType[ValueType["VECTOR_BOOL"] = 36] = "VECTOR_BOOL";
+})(ValueType = exports.ValueType || (exports.ValueType = {}));
diff --git a/igv_component/node_modules/flatbuffers/js/long.d.ts b/igv_component/node_modules/flatbuffers/js/long.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..8f2897e8b5faee39e55080891949e2dc9a6675bf
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/long.d.ts
@@ -0,0 +1,10 @@
+export declare function createLong(low: number, high: number): Long;
+export declare class Long {
+    static readonly ZERO: Long;
+    low: number;
+    high: number;
+    constructor(low: number, high: number);
+    static create(low: number, high: number): Long;
+    toFloat64(): number;
+    equals(other: Long): boolean;
+}
diff --git a/igv_component/node_modules/flatbuffers/js/long.js b/igv_component/node_modules/flatbuffers/js/long.js
new file mode 100644
index 0000000000000000000000000000000000000000..9fc7e7e90a4d58a14cb1b35cc65c64499c7ec787
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/long.js
@@ -0,0 +1,26 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.Long = exports.createLong = void 0;
+function createLong(low, high) {
+    return Long.create(low, high);
+}
+exports.createLong = createLong;
+var Long = /** @class */ (function () {
+    function Long(low, high) {
+        this.low = low | 0;
+        this.high = high | 0;
+    }
+    Long.create = function (low, high) {
+        // Special-case zero to avoid GC overhead for default values
+        return low == 0 && high == 0 ? Long.ZERO : new Long(low, high);
+    };
+    Long.prototype.toFloat64 = function () {
+        return (this.low >>> 0) + this.high * 0x100000000;
+    };
+    Long.prototype.equals = function (other) {
+        return this.low == other.low && this.high == other.high;
+    };
+    Long.ZERO = new Long(0, 0);
+    return Long;
+}());
+exports.Long = Long;
diff --git a/igv_component/node_modules/flatbuffers/js/types.d.ts b/igv_component/node_modules/flatbuffers/js/types.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..9c081210ddbacbc0532b3e5dfb0a10f2469125ba
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/types.d.ts
@@ -0,0 +1,11 @@
+import { ByteBuffer } from './byte-buffer';
+import { Builder } from './builder';
+export declare type Offset = number;
+export declare type Table = {
+    bb: ByteBuffer;
+    bb_pos: number;
+};
+export interface IGeneratedObject {
+    pack(builder: Builder): Offset;
+    unpack(): IGeneratedObject;
+}
diff --git a/igv_component/node_modules/flatbuffers/js/types.js b/igv_component/node_modules/flatbuffers/js/types.js
new file mode 100644
index 0000000000000000000000000000000000000000..c8ad2e549bdc6801e0d1c80b0308d4b9bd4985ce
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/types.js
@@ -0,0 +1,2 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
diff --git a/igv_component/node_modules/flatbuffers/js/utils.d.ts b/igv_component/node_modules/flatbuffers/js/utils.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..8b1dd9845dca70a34315adf7bcd5eb695a3a1b7a
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/utils.d.ts
@@ -0,0 +1,4 @@
+export declare const int32: Int32Array;
+export declare const float32: Float32Array;
+export declare const float64: Float64Array;
+export declare const isLittleEndian: boolean;
diff --git a/igv_component/node_modules/flatbuffers/js/utils.js b/igv_component/node_modules/flatbuffers/js/utils.js
new file mode 100644
index 0000000000000000000000000000000000000000..1ed60d219fdac3033d8ce2733f95ac2e2fd3743b
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/js/utils.js
@@ -0,0 +1,7 @@
+"use strict";
+Object.defineProperty(exports, "__esModule", { value: true });
+exports.isLittleEndian = exports.float64 = exports.float32 = exports.int32 = void 0;
+exports.int32 = new Int32Array(2);
+exports.float32 = new Float32Array(exports.int32.buffer);
+exports.float64 = new Float64Array(exports.int32.buffer);
+exports.isLittleEndian = new Uint16Array(new Uint8Array([1, 0]).buffer)[0] === 1;
diff --git a/igv_component/node_modules/flatbuffers/mjs/README.md b/igv_component/node_modules/flatbuffers/mjs/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..e3ca9db9d4c18d836ba488a6b2ff203053aa3037
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/README.md
@@ -0,0 +1 @@
+This folder is intentionally empty and will contain transpiled js modules in ES modules format after compiling with tsc.
\ No newline at end of file
diff --git a/igv_component/node_modules/flatbuffers/mjs/builder.d.ts b/igv_component/node_modules/flatbuffers/mjs/builder.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..2d5e9122cb6f177444dc05a5f2fc1bce31991f7f
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/builder.d.ts
@@ -0,0 +1,221 @@
+import { ByteBuffer } from "./byte-buffer";
+import { Offset } from "./types";
+import { Long } from "./long";
+export declare class Builder {
+    private bb;
+    /** Remaining space in the ByteBuffer. */
+    private space;
+    /** Minimum alignment encountered so far. */
+    private minalign;
+    /** The vtable for the current table. */
+    private vtable;
+    /** The amount of fields we're actually using. */
+    private vtable_in_use;
+    /** Whether we are currently serializing a table. */
+    private isNested;
+    /** Starting offset of the current struct/table. */
+    private object_start;
+    /** List of offsets of all vtables. */
+    private vtables;
+    /** For the current vector being built. */
+    private vector_num_elems;
+    /** False omits default values from the serialized data */
+    private force_defaults;
+    private string_maps;
+    /**
+     * Create a FlatBufferBuilder.
+     */
+    constructor(opt_initial_size?: number);
+    clear(): void;
+    /**
+     * In order to save space, fields that are set to their default value
+     * don't get serialized into the buffer. Forcing defaults provides a
+     * way to manually disable this optimization.
+     *
+     * @param forceDefaults true always serializes default values
+     */
+    forceDefaults(forceDefaults: boolean): void;
+    /**
+     * Get the ByteBuffer representing the FlatBuffer. Only call this after you've
+     * called finish(). The actual data starts at the ByteBuffer's current position,
+     * not necessarily at 0.
+     */
+    dataBuffer(): ByteBuffer;
+    /**
+     * Get the bytes representing the FlatBuffer. Only call this after you've
+     * called finish().
+     */
+    asUint8Array(): Uint8Array;
+    /**
+     * Prepare to write an element of `size` after `additional_bytes` have been
+     * written, e.g. if you write a string, you need to align such the int length
+     * field is aligned to 4 bytes, and the string data follows it directly. If all
+     * you need to do is alignment, `additional_bytes` will be 0.
+     *
+     * @param size This is the of the new element to write
+     * @param additional_bytes The padding size
+     */
+    prep(size: number, additional_bytes: number): void;
+    pad(byte_size: number): void;
+    writeInt8(value: number): void;
+    writeInt16(value: number): void;
+    writeInt32(value: number): void;
+    writeInt64(value: Long): void;
+    writeFloat32(value: number): void;
+    writeFloat64(value: number): void;
+    /**
+     * Add an `int8` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int8` to add the the buffer.
+     */
+    addInt8(value: number): void;
+    /**
+     * Add an `int16` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int16` to add the the buffer.
+     */
+    addInt16(value: number): void;
+    /**
+     * Add an `int32` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int32` to add the the buffer.
+     */
+    addInt32(value: number): void;
+    /**
+     * Add an `int64` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int64` to add the the buffer.
+     */
+    addInt64(value: Long): void;
+    /**
+     * Add a `float32` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `float32` to add the the buffer.
+     */
+    addFloat32(value: number): void;
+    /**
+     * Add a `float64` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `float64` to add the the buffer.
+     */
+    addFloat64(value: number): void;
+    addFieldInt8(voffset: number, value: number, defaultValue: number): void;
+    addFieldInt16(voffset: number, value: number, defaultValue: number): void;
+    addFieldInt32(voffset: number, value: number, defaultValue: number): void;
+    addFieldInt64(voffset: number, value: Long, defaultValue: Long): void;
+    addFieldFloat32(voffset: number, value: number, defaultValue: number): void;
+    addFieldFloat64(voffset: number, value: number, defaultValue: number): void;
+    addFieldOffset(voffset: number, value: Offset, defaultValue: Offset): void;
+    /**
+     * Structs are stored inline, so nothing additional is being added. `d` is always 0.
+     */
+    addFieldStruct(voffset: number, value: Offset, defaultValue: Offset): void;
+    /**
+     * Structures are always stored inline, they need to be created right
+     * where they're used.  You'll get this assertion failure if you
+     * created it elsewhere.
+     */
+    nested(obj: Offset): void;
+    /**
+     * Should not be creating any other object, string or vector
+     * while an object is being constructed
+     */
+    notNested(): void;
+    /**
+     * Set the current vtable at `voffset` to the current location in the buffer.
+     */
+    slot(voffset: number): void;
+    /**
+     * @returns Offset relative to the end of the buffer.
+     */
+    offset(): Offset;
+    /**
+     * Doubles the size of the backing ByteBuffer and copies the old data towards
+     * the end of the new buffer (since we build the buffer backwards).
+     *
+     * @param bb The current buffer with the existing data
+     * @returns A new byte buffer with the old data copied
+     * to it. The data is located at the end of the buffer.
+     *
+     * uint8Array.set() formally takes {Array<number>|ArrayBufferView}, so to pass
+     * it a uint8Array we need to suppress the type check:
+     * @suppress {checkTypes}
+     */
+    static growByteBuffer(bb: ByteBuffer): ByteBuffer;
+    /**
+     * Adds on offset, relative to where it will be written.
+     *
+     * @param offset The offset to add.
+     */
+    addOffset(offset: Offset): void;
+    /**
+     * Start encoding a new object in the buffer.  Users will not usually need to
+     * call this directly. The FlatBuffers compiler will generate helper methods
+     * that call this method internally.
+     */
+    startObject(numfields: number): void;
+    /**
+     * Finish off writing the object that is under construction.
+     *
+     * @returns The offset to the object inside `dataBuffer`
+     */
+    endObject(): Offset;
+    /**
+     * Finalize a buffer, poiting to the given `root_table`.
+     */
+    finish(root_table: Offset, opt_file_identifier?: string, opt_size_prefix?: boolean): void;
+    /**
+     * Finalize a size prefixed buffer, pointing to the given `root_table`.
+     */
+    finishSizePrefixed(this: Builder, root_table: Offset, opt_file_identifier?: string): void;
+    /**
+     * This checks a required field has been set in a given table that has
+     * just been constructed.
+     */
+    requiredField(table: Offset, field: number): void;
+    /**
+     * Start a new array/vector of objects.  Users usually will not call
+     * this directly. The FlatBuffers compiler will create a start/end
+     * method for vector types in generated code.
+     *
+     * @param elem_size The size of each element in the array
+     * @param num_elems The number of elements in the array
+     * @param alignment The alignment of the array
+     */
+    startVector(elem_size: number, num_elems: number, alignment: number): void;
+    /**
+     * Finish off the creation of an array and all its elements. The array must be
+     * created with `startVector`.
+     *
+     * @returns The offset at which the newly created array
+     * starts.
+     */
+    endVector(): Offset;
+    /**
+     * Encode the string `s` in the buffer using UTF-8. If the string passed has
+     * already been seen, we return the offset of the already written string
+     *
+     * @param s The string to encode
+     * @return The offset in the buffer where the encoded string starts
+     */
+    createSharedString(s: string | Uint8Array): Offset;
+    /**
+     * Encode the string `s` in the buffer using UTF-8. If a Uint8Array is passed
+     * instead of a string, it is assumed to contain valid UTF-8 encoded data.
+     *
+     * @param s The string to encode
+     * @return The offset in the buffer where the encoded string starts
+     */
+    createString(s: string | Uint8Array): Offset;
+    /**
+     * A helper function to avoid generated code depending on this file directly.
+     */
+    createLong(low: number, high: number): Long;
+    /**
+     * A helper function to pack an object
+     *
+     * @returns offset of obj
+     */
+    createObjectOffset(obj: string | any): Offset;
+    /**
+     * A helper function to pack a list of object
+     *
+     * @returns list of offsets of each non null object
+     */
+    createObjectOffsetList(list: string[] | any[]): Offset[];
+    createStructOffsetList(list: string[] | any[], startFunc: (builder: Builder, length: number) => void): Offset;
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/builder.js b/igv_component/node_modules/flatbuffers/mjs/builder.js
new file mode 100644
index 0000000000000000000000000000000000000000..7d68b82919eb33c75e6c18cff71b400370e36a08
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/builder.js
@@ -0,0 +1,557 @@
+import { ByteBuffer } from "./byte-buffer";
+import { SIZEOF_SHORT, SIZE_PREFIX_LENGTH, SIZEOF_INT, FILE_IDENTIFIER_LENGTH } from "./constants";
+import { Long } from "./long";
+export class Builder {
+    /**
+     * Create a FlatBufferBuilder.
+     */
+    constructor(opt_initial_size) {
+        /** Minimum alignment encountered so far. */
+        this.minalign = 1;
+        /** The vtable for the current table. */
+        this.vtable = null;
+        /** The amount of fields we're actually using. */
+        this.vtable_in_use = 0;
+        /** Whether we are currently serializing a table. */
+        this.isNested = false;
+        /** Starting offset of the current struct/table. */
+        this.object_start = 0;
+        /** List of offsets of all vtables. */
+        this.vtables = [];
+        /** For the current vector being built. */
+        this.vector_num_elems = 0;
+        /** False omits default values from the serialized data */
+        this.force_defaults = false;
+        this.string_maps = null;
+        let initial_size;
+        if (!opt_initial_size) {
+            initial_size = 1024;
+        }
+        else {
+            initial_size = opt_initial_size;
+        }
+        /**
+         * @type {ByteBuffer}
+         * @private
+         */
+        this.bb = ByteBuffer.allocate(initial_size);
+        this.space = initial_size;
+    }
+    clear() {
+        this.bb.clear();
+        this.space = this.bb.capacity();
+        this.minalign = 1;
+        this.vtable = null;
+        this.vtable_in_use = 0;
+        this.isNested = false;
+        this.object_start = 0;
+        this.vtables = [];
+        this.vector_num_elems = 0;
+        this.force_defaults = false;
+        this.string_maps = null;
+    }
+    /**
+     * In order to save space, fields that are set to their default value
+     * don't get serialized into the buffer. Forcing defaults provides a
+     * way to manually disable this optimization.
+     *
+     * @param forceDefaults true always serializes default values
+     */
+    forceDefaults(forceDefaults) {
+        this.force_defaults = forceDefaults;
+    }
+    /**
+     * Get the ByteBuffer representing the FlatBuffer. Only call this after you've
+     * called finish(). The actual data starts at the ByteBuffer's current position,
+     * not necessarily at 0.
+     */
+    dataBuffer() {
+        return this.bb;
+    }
+    /**
+     * Get the bytes representing the FlatBuffer. Only call this after you've
+     * called finish().
+     */
+    asUint8Array() {
+        return this.bb.bytes().subarray(this.bb.position(), this.bb.position() + this.offset());
+    }
+    /**
+     * Prepare to write an element of `size` after `additional_bytes` have been
+     * written, e.g. if you write a string, you need to align such the int length
+     * field is aligned to 4 bytes, and the string data follows it directly. If all
+     * you need to do is alignment, `additional_bytes` will be 0.
+     *
+     * @param size This is the of the new element to write
+     * @param additional_bytes The padding size
+     */
+    prep(size, additional_bytes) {
+        // Track the biggest thing we've ever aligned to.
+        if (size > this.minalign) {
+            this.minalign = size;
+        }
+        // Find the amount of alignment needed such that `size` is properly
+        // aligned after `additional_bytes`
+        const align_size = ((~(this.bb.capacity() - this.space + additional_bytes)) + 1) & (size - 1);
+        // Reallocate the buffer if needed.
+        while (this.space < align_size + size + additional_bytes) {
+            const old_buf_size = this.bb.capacity();
+            this.bb = Builder.growByteBuffer(this.bb);
+            this.space += this.bb.capacity() - old_buf_size;
+        }
+        this.pad(align_size);
+    }
+    pad(byte_size) {
+        for (let i = 0; i < byte_size; i++) {
+            this.bb.writeInt8(--this.space, 0);
+        }
+    }
+    writeInt8(value) {
+        this.bb.writeInt8(this.space -= 1, value);
+    }
+    writeInt16(value) {
+        this.bb.writeInt16(this.space -= 2, value);
+    }
+    writeInt32(value) {
+        this.bb.writeInt32(this.space -= 4, value);
+    }
+    writeInt64(value) {
+        this.bb.writeInt64(this.space -= 8, value);
+    }
+    writeFloat32(value) {
+        this.bb.writeFloat32(this.space -= 4, value);
+    }
+    writeFloat64(value) {
+        this.bb.writeFloat64(this.space -= 8, value);
+    }
+    /**
+     * Add an `int8` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int8` to add the the buffer.
+     */
+    addInt8(value) {
+        this.prep(1, 0);
+        this.writeInt8(value);
+    }
+    /**
+     * Add an `int16` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int16` to add the the buffer.
+     */
+    addInt16(value) {
+        this.prep(2, 0);
+        this.writeInt16(value);
+    }
+    /**
+     * Add an `int32` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int32` to add the the buffer.
+     */
+    addInt32(value) {
+        this.prep(4, 0);
+        this.writeInt32(value);
+    }
+    /**
+     * Add an `int64` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int64` to add the the buffer.
+     */
+    addInt64(value) {
+        this.prep(8, 0);
+        this.writeInt64(value);
+    }
+    /**
+     * Add a `float32` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `float32` to add the the buffer.
+     */
+    addFloat32(value) {
+        this.prep(4, 0);
+        this.writeFloat32(value);
+    }
+    /**
+     * Add a `float64` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `float64` to add the the buffer.
+     */
+    addFloat64(value) {
+        this.prep(8, 0);
+        this.writeFloat64(value);
+    }
+    addFieldInt8(voffset, value, defaultValue) {
+        if (this.force_defaults || value != defaultValue) {
+            this.addInt8(value);
+            this.slot(voffset);
+        }
+    }
+    addFieldInt16(voffset, value, defaultValue) {
+        if (this.force_defaults || value != defaultValue) {
+            this.addInt16(value);
+            this.slot(voffset);
+        }
+    }
+    addFieldInt32(voffset, value, defaultValue) {
+        if (this.force_defaults || value != defaultValue) {
+            this.addInt32(value);
+            this.slot(voffset);
+        }
+    }
+    addFieldInt64(voffset, value, defaultValue) {
+        if (this.force_defaults || !value.equals(defaultValue)) {
+            this.addInt64(value);
+            this.slot(voffset);
+        }
+    }
+    addFieldFloat32(voffset, value, defaultValue) {
+        if (this.force_defaults || value != defaultValue) {
+            this.addFloat32(value);
+            this.slot(voffset);
+        }
+    }
+    addFieldFloat64(voffset, value, defaultValue) {
+        if (this.force_defaults || value != defaultValue) {
+            this.addFloat64(value);
+            this.slot(voffset);
+        }
+    }
+    addFieldOffset(voffset, value, defaultValue) {
+        if (this.force_defaults || value != defaultValue) {
+            this.addOffset(value);
+            this.slot(voffset);
+        }
+    }
+    /**
+     * Structs are stored inline, so nothing additional is being added. `d` is always 0.
+     */
+    addFieldStruct(voffset, value, defaultValue) {
+        if (value != defaultValue) {
+            this.nested(value);
+            this.slot(voffset);
+        }
+    }
+    /**
+     * Structures are always stored inline, they need to be created right
+     * where they're used.  You'll get this assertion failure if you
+     * created it elsewhere.
+     */
+    nested(obj) {
+        if (obj != this.offset()) {
+            throw new Error('FlatBuffers: struct must be serialized inline.');
+        }
+    }
+    /**
+     * Should not be creating any other object, string or vector
+     * while an object is being constructed
+     */
+    notNested() {
+        if (this.isNested) {
+            throw new Error('FlatBuffers: object serialization must not be nested.');
+        }
+    }
+    /**
+     * Set the current vtable at `voffset` to the current location in the buffer.
+     */
+    slot(voffset) {
+        if (this.vtable !== null)
+            this.vtable[voffset] = this.offset();
+    }
+    /**
+     * @returns Offset relative to the end of the buffer.
+     */
+    offset() {
+        return this.bb.capacity() - this.space;
+    }
+    /**
+     * Doubles the size of the backing ByteBuffer and copies the old data towards
+     * the end of the new buffer (since we build the buffer backwards).
+     *
+     * @param bb The current buffer with the existing data
+     * @returns A new byte buffer with the old data copied
+     * to it. The data is located at the end of the buffer.
+     *
+     * uint8Array.set() formally takes {Array<number>|ArrayBufferView}, so to pass
+     * it a uint8Array we need to suppress the type check:
+     * @suppress {checkTypes}
+     */
+    static growByteBuffer(bb) {
+        const old_buf_size = bb.capacity();
+        // Ensure we don't grow beyond what fits in an int.
+        if (old_buf_size & 0xC0000000) {
+            throw new Error('FlatBuffers: cannot grow buffer beyond 2 gigabytes.');
+        }
+        const new_buf_size = old_buf_size << 1;
+        const nbb = ByteBuffer.allocate(new_buf_size);
+        nbb.setPosition(new_buf_size - old_buf_size);
+        nbb.bytes().set(bb.bytes(), new_buf_size - old_buf_size);
+        return nbb;
+    }
+    /**
+     * Adds on offset, relative to where it will be written.
+     *
+     * @param offset The offset to add.
+     */
+    addOffset(offset) {
+        this.prep(SIZEOF_INT, 0); // Ensure alignment is already done.
+        this.writeInt32(this.offset() - offset + SIZEOF_INT);
+    }
+    /**
+     * Start encoding a new object in the buffer.  Users will not usually need to
+     * call this directly. The FlatBuffers compiler will generate helper methods
+     * that call this method internally.
+     */
+    startObject(numfields) {
+        this.notNested();
+        if (this.vtable == null) {
+            this.vtable = [];
+        }
+        this.vtable_in_use = numfields;
+        for (let i = 0; i < numfields; i++) {
+            this.vtable[i] = 0; // This will push additional elements as needed
+        }
+        this.isNested = true;
+        this.object_start = this.offset();
+    }
+    /**
+     * Finish off writing the object that is under construction.
+     *
+     * @returns The offset to the object inside `dataBuffer`
+     */
+    endObject() {
+        if (this.vtable == null || !this.isNested) {
+            throw new Error('FlatBuffers: endObject called without startObject');
+        }
+        this.addInt32(0);
+        const vtableloc = this.offset();
+        // Trim trailing zeroes.
+        let i = this.vtable_in_use - 1;
+        // eslint-disable-next-line no-empty
+        for (; i >= 0 && this.vtable[i] == 0; i--) { }
+        const trimmed_size = i + 1;
+        // Write out the current vtable.
+        for (; i >= 0; i--) {
+            // Offset relative to the start of the table.
+            this.addInt16(this.vtable[i] != 0 ? vtableloc - this.vtable[i] : 0);
+        }
+        const standard_fields = 2; // The fields below:
+        this.addInt16(vtableloc - this.object_start);
+        const len = (trimmed_size + standard_fields) * SIZEOF_SHORT;
+        this.addInt16(len);
+        // Search for an existing vtable that matches the current one.
+        let existing_vtable = 0;
+        const vt1 = this.space;
+        outer_loop: for (i = 0; i < this.vtables.length; i++) {
+            const vt2 = this.bb.capacity() - this.vtables[i];
+            if (len == this.bb.readInt16(vt2)) {
+                for (let j = SIZEOF_SHORT; j < len; j += SIZEOF_SHORT) {
+                    if (this.bb.readInt16(vt1 + j) != this.bb.readInt16(vt2 + j)) {
+                        continue outer_loop;
+                    }
+                }
+                existing_vtable = this.vtables[i];
+                break;
+            }
+        }
+        if (existing_vtable) {
+            // Found a match:
+            // Remove the current vtable.
+            this.space = this.bb.capacity() - vtableloc;
+            // Point table to existing vtable.
+            this.bb.writeInt32(this.space, existing_vtable - vtableloc);
+        }
+        else {
+            // No match:
+            // Add the location of the current vtable to the list of vtables.
+            this.vtables.push(this.offset());
+            // Point table to current vtable.
+            this.bb.writeInt32(this.bb.capacity() - vtableloc, this.offset() - vtableloc);
+        }
+        this.isNested = false;
+        return vtableloc;
+    }
+    /**
+     * Finalize a buffer, poiting to the given `root_table`.
+     */
+    finish(root_table, opt_file_identifier, opt_size_prefix) {
+        const size_prefix = opt_size_prefix ? SIZE_PREFIX_LENGTH : 0;
+        if (opt_file_identifier) {
+            const file_identifier = opt_file_identifier;
+            this.prep(this.minalign, SIZEOF_INT +
+                FILE_IDENTIFIER_LENGTH + size_prefix);
+            if (file_identifier.length != FILE_IDENTIFIER_LENGTH) {
+                throw new Error('FlatBuffers: file identifier must be length ' +
+                    FILE_IDENTIFIER_LENGTH);
+            }
+            for (let i = FILE_IDENTIFIER_LENGTH - 1; i >= 0; i--) {
+                this.writeInt8(file_identifier.charCodeAt(i));
+            }
+        }
+        this.prep(this.minalign, SIZEOF_INT + size_prefix);
+        this.addOffset(root_table);
+        if (size_prefix) {
+            this.addInt32(this.bb.capacity() - this.space);
+        }
+        this.bb.setPosition(this.space);
+    }
+    /**
+     * Finalize a size prefixed buffer, pointing to the given `root_table`.
+     */
+    finishSizePrefixed(root_table, opt_file_identifier) {
+        this.finish(root_table, opt_file_identifier, true);
+    }
+    /**
+     * This checks a required field has been set in a given table that has
+     * just been constructed.
+     */
+    requiredField(table, field) {
+        const table_start = this.bb.capacity() - table;
+        const vtable_start = table_start - this.bb.readInt32(table_start);
+        const ok = this.bb.readInt16(vtable_start + field) != 0;
+        // If this fails, the caller will show what field needs to be set.
+        if (!ok) {
+            throw new Error('FlatBuffers: field ' + field + ' must be set');
+        }
+    }
+    /**
+     * Start a new array/vector of objects.  Users usually will not call
+     * this directly. The FlatBuffers compiler will create a start/end
+     * method for vector types in generated code.
+     *
+     * @param elem_size The size of each element in the array
+     * @param num_elems The number of elements in the array
+     * @param alignment The alignment of the array
+     */
+    startVector(elem_size, num_elems, alignment) {
+        this.notNested();
+        this.vector_num_elems = num_elems;
+        this.prep(SIZEOF_INT, elem_size * num_elems);
+        this.prep(alignment, elem_size * num_elems); // Just in case alignment > int.
+    }
+    /**
+     * Finish off the creation of an array and all its elements. The array must be
+     * created with `startVector`.
+     *
+     * @returns The offset at which the newly created array
+     * starts.
+     */
+    endVector() {
+        this.writeInt32(this.vector_num_elems);
+        return this.offset();
+    }
+    /**
+     * Encode the string `s` in the buffer using UTF-8. If the string passed has
+     * already been seen, we return the offset of the already written string
+     *
+     * @param s The string to encode
+     * @return The offset in the buffer where the encoded string starts
+     */
+    createSharedString(s) {
+        if (!s) {
+            return 0;
+        }
+        if (!this.string_maps) {
+            this.string_maps = new Map();
+        }
+        if (this.string_maps.has(s)) {
+            return this.string_maps.get(s);
+        }
+        const offset = this.createString(s);
+        this.string_maps.set(s, offset);
+        return offset;
+    }
+    /**
+     * Encode the string `s` in the buffer using UTF-8. If a Uint8Array is passed
+     * instead of a string, it is assumed to contain valid UTF-8 encoded data.
+     *
+     * @param s The string to encode
+     * @return The offset in the buffer where the encoded string starts
+     */
+    createString(s) {
+        if (!s) {
+            return 0;
+        }
+        let utf8;
+        if (s instanceof Uint8Array) {
+            utf8 = s;
+        }
+        else {
+            utf8 = [];
+            let i = 0;
+            while (i < s.length) {
+                let codePoint;
+                // Decode UTF-16
+                const a = s.charCodeAt(i++);
+                if (a < 0xD800 || a >= 0xDC00) {
+                    codePoint = a;
+                }
+                else {
+                    const b = s.charCodeAt(i++);
+                    codePoint = (a << 10) + b + (0x10000 - (0xD800 << 10) - 0xDC00);
+                }
+                // Encode UTF-8
+                if (codePoint < 0x80) {
+                    utf8.push(codePoint);
+                }
+                else {
+                    if (codePoint < 0x800) {
+                        utf8.push(((codePoint >> 6) & 0x1F) | 0xC0);
+                    }
+                    else {
+                        if (codePoint < 0x10000) {
+                            utf8.push(((codePoint >> 12) & 0x0F) | 0xE0);
+                        }
+                        else {
+                            utf8.push(((codePoint >> 18) & 0x07) | 0xF0, ((codePoint >> 12) & 0x3F) | 0x80);
+                        }
+                        utf8.push(((codePoint >> 6) & 0x3F) | 0x80);
+                    }
+                    utf8.push((codePoint & 0x3F) | 0x80);
+                }
+            }
+        }
+        this.addInt8(0);
+        this.startVector(1, utf8.length, 1);
+        this.bb.setPosition(this.space -= utf8.length);
+        for (let i = 0, offset = this.space, bytes = this.bb.bytes(); i < utf8.length; i++) {
+            bytes[offset++] = utf8[i];
+        }
+        return this.endVector();
+    }
+    /**
+     * A helper function to avoid generated code depending on this file directly.
+     */
+    createLong(low, high) {
+        return Long.create(low, high);
+    }
+    /**
+     * A helper function to pack an object
+     *
+     * @returns offset of obj
+     */
+    createObjectOffset(obj) {
+        if (obj === null) {
+            return 0;
+        }
+        if (typeof obj === 'string') {
+            return this.createString(obj);
+        }
+        else {
+            return obj.pack(this);
+        }
+    }
+    /**
+     * A helper function to pack a list of object
+     *
+     * @returns list of offsets of each non null object
+     */
+    createObjectOffsetList(list) {
+        const ret = [];
+        for (let i = 0; i < list.length; ++i) {
+            const val = list[i];
+            if (val !== null) {
+                ret.push(this.createObjectOffset(val));
+            }
+            else {
+                throw new Error('FlatBuffers: Argument for createObjectOffsetList cannot contain null.');
+            }
+        }
+        return ret;
+    }
+    createStructOffsetList(list, startFunc) {
+        startFunc(this, list.length);
+        this.createObjectOffsetList(list);
+        return this.endVector();
+    }
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/byte-buffer.d.ts b/igv_component/node_modules/flatbuffers/mjs/byte-buffer.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..eafca3c750d7befe2201163a55cfe5e18dddd9f9
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/byte-buffer.d.ts
@@ -0,0 +1,116 @@
+import { Long } from "./long";
+import { Offset, Table } from "./types";
+import { Encoding } from "./encoding";
+export declare class ByteBuffer {
+    private bytes_;
+    private position_;
+    /**
+     * Create a new ByteBuffer with a given array of bytes (`Uint8Array`)
+     */
+    constructor(bytes_: Uint8Array);
+    /**
+     * Create and allocate a new ByteBuffer with a given size.
+     */
+    static allocate(byte_size: number): ByteBuffer;
+    clear(): void;
+    /**
+     * Get the underlying `Uint8Array`.
+     */
+    bytes(): Uint8Array;
+    /**
+     * Get the buffer's position.
+     */
+    position(): number;
+    /**
+     * Set the buffer's position.
+     */
+    setPosition(position: number): void;
+    /**
+     * Get the buffer's capacity.
+     */
+    capacity(): number;
+    readInt8(offset: number): number;
+    readUint8(offset: number): number;
+    readInt16(offset: number): number;
+    readUint16(offset: number): number;
+    readInt32(offset: number): number;
+    readUint32(offset: number): number;
+    readInt64(offset: number): Long;
+    readUint64(offset: number): Long;
+    readFloat32(offset: number): number;
+    readFloat64(offset: number): number;
+    writeInt8(offset: number, value: number): void;
+    writeUint8(offset: number, value: number): void;
+    writeInt16(offset: number, value: number): void;
+    writeUint16(offset: number, value: number): void;
+    writeInt32(offset: number, value: number): void;
+    writeUint32(offset: number, value: number): void;
+    writeInt64(offset: number, value: Long): void;
+    writeUint64(offset: number, value: Long): void;
+    writeFloat32(offset: number, value: number): void;
+    writeFloat64(offset: number, value: number): void;
+    /**
+     * Return the file identifier.   Behavior is undefined for FlatBuffers whose
+     * schema does not include a file_identifier (likely points at padding or the
+     * start of a the root vtable).
+     */
+    getBufferIdentifier(): string;
+    /**
+     * Look up a field in the vtable, return an offset into the object, or 0 if the
+     * field is not present.
+     */
+    __offset(bb_pos: number, vtable_offset: number): Offset;
+    /**
+     * Initialize any Table-derived type to point to the union at the given offset.
+     */
+    __union(t: Table, offset: number): Table;
+    /**
+     * Create a JavaScript string from UTF-8 data stored inside the FlatBuffer.
+     * This allocates a new string and converts to wide chars upon each access.
+     *
+     * To avoid the conversion to UTF-16, pass Encoding.UTF8_BYTES as
+     * the "optionalEncoding" argument. This is useful for avoiding conversion to
+     * and from UTF-16 when the data will just be packaged back up in another
+     * FlatBuffer later on.
+     *
+     * @param offset
+     * @param opt_encoding Defaults to UTF16_STRING
+     */
+    __string(offset: number, opt_encoding?: Encoding): string | Uint8Array;
+    /**
+     * Handle unions that can contain string as its member, if a Table-derived type then initialize it,
+     * if a string then return a new one
+     *
+     * WARNING: strings are immutable in JS so we can't change the string that the user gave us, this
+     * makes the behaviour of __union_with_string different compared to __union
+     */
+    __union_with_string(o: Table | string, offset: number): Table | string;
+    /**
+     * Retrieve the relative offset stored at "offset"
+     */
+    __indirect(offset: Offset): Offset;
+    /**
+     * Get the start of data of a vector whose offset is stored at "offset" in this object.
+     */
+    __vector(offset: Offset): Offset;
+    /**
+     * Get the length of a vector whose offset is stored at "offset" in this object.
+     */
+    __vector_len(offset: Offset): Offset;
+    __has_identifier(ident: string): boolean;
+    /**
+     * A helper function to avoid generated code depending on this file directly.
+     */
+    createLong(low: number, high: number): Long;
+    /**
+     * A helper function for generating list for obj api
+     */
+    createScalarList(listAccessor: (i: number) => unknown, listLength: number): any[];
+    /**
+     * A helper function for generating list for obj api
+     * @param listAccessor function that accepts an index and return data at that index
+     * @param listLength listLength
+     * @param res result list
+     */
+    createObjList(listAccessor: (i: number) => unknown, listLength: number): any[];
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/byte-buffer.js b/igv_component/node_modules/flatbuffers/mjs/byte-buffer.js
new file mode 100644
index 0000000000000000000000000000000000000000..e971ffddb6a2a3161adda119220c55ae97184f27
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/byte-buffer.js
@@ -0,0 +1,295 @@
+import { FILE_IDENTIFIER_LENGTH, SIZEOF_INT } from "./constants";
+import { Long } from "./long";
+import { int32, isLittleEndian, float32, float64 } from "./utils";
+import { Encoding } from "./encoding";
+export class ByteBuffer {
+    /**
+     * Create a new ByteBuffer with a given array of bytes (`Uint8Array`)
+     */
+    constructor(bytes_) {
+        this.bytes_ = bytes_;
+        this.position_ = 0;
+    }
+    /**
+     * Create and allocate a new ByteBuffer with a given size.
+     */
+    static allocate(byte_size) {
+        return new ByteBuffer(new Uint8Array(byte_size));
+    }
+    clear() {
+        this.position_ = 0;
+    }
+    /**
+     * Get the underlying `Uint8Array`.
+     */
+    bytes() {
+        return this.bytes_;
+    }
+    /**
+     * Get the buffer's position.
+     */
+    position() {
+        return this.position_;
+    }
+    /**
+     * Set the buffer's position.
+     */
+    setPosition(position) {
+        this.position_ = position;
+    }
+    /**
+     * Get the buffer's capacity.
+     */
+    capacity() {
+        return this.bytes_.length;
+    }
+    readInt8(offset) {
+        return this.readUint8(offset) << 24 >> 24;
+    }
+    readUint8(offset) {
+        return this.bytes_[offset];
+    }
+    readInt16(offset) {
+        return this.readUint16(offset) << 16 >> 16;
+    }
+    readUint16(offset) {
+        return this.bytes_[offset] | this.bytes_[offset + 1] << 8;
+    }
+    readInt32(offset) {
+        return this.bytes_[offset] | this.bytes_[offset + 1] << 8 | this.bytes_[offset + 2] << 16 | this.bytes_[offset + 3] << 24;
+    }
+    readUint32(offset) {
+        return this.readInt32(offset) >>> 0;
+    }
+    readInt64(offset) {
+        return new Long(this.readInt32(offset), this.readInt32(offset + 4));
+    }
+    readUint64(offset) {
+        return new Long(this.readUint32(offset), this.readUint32(offset + 4));
+    }
+    readFloat32(offset) {
+        int32[0] = this.readInt32(offset);
+        return float32[0];
+    }
+    readFloat64(offset) {
+        int32[isLittleEndian ? 0 : 1] = this.readInt32(offset);
+        int32[isLittleEndian ? 1 : 0] = this.readInt32(offset + 4);
+        return float64[0];
+    }
+    writeInt8(offset, value) {
+        this.bytes_[offset] = value;
+    }
+    writeUint8(offset, value) {
+        this.bytes_[offset] = value;
+    }
+    writeInt16(offset, value) {
+        this.bytes_[offset] = value;
+        this.bytes_[offset + 1] = value >> 8;
+    }
+    writeUint16(offset, value) {
+        this.bytes_[offset] = value;
+        this.bytes_[offset + 1] = value >> 8;
+    }
+    writeInt32(offset, value) {
+        this.bytes_[offset] = value;
+        this.bytes_[offset + 1] = value >> 8;
+        this.bytes_[offset + 2] = value >> 16;
+        this.bytes_[offset + 3] = value >> 24;
+    }
+    writeUint32(offset, value) {
+        this.bytes_[offset] = value;
+        this.bytes_[offset + 1] = value >> 8;
+        this.bytes_[offset + 2] = value >> 16;
+        this.bytes_[offset + 3] = value >> 24;
+    }
+    writeInt64(offset, value) {
+        this.writeInt32(offset, value.low);
+        this.writeInt32(offset + 4, value.high);
+    }
+    writeUint64(offset, value) {
+        this.writeUint32(offset, value.low);
+        this.writeUint32(offset + 4, value.high);
+    }
+    writeFloat32(offset, value) {
+        float32[0] = value;
+        this.writeInt32(offset, int32[0]);
+    }
+    writeFloat64(offset, value) {
+        float64[0] = value;
+        this.writeInt32(offset, int32[isLittleEndian ? 0 : 1]);
+        this.writeInt32(offset + 4, int32[isLittleEndian ? 1 : 0]);
+    }
+    /**
+     * Return the file identifier.   Behavior is undefined for FlatBuffers whose
+     * schema does not include a file_identifier (likely points at padding or the
+     * start of a the root vtable).
+     */
+    getBufferIdentifier() {
+        if (this.bytes_.length < this.position_ + SIZEOF_INT +
+            FILE_IDENTIFIER_LENGTH) {
+            throw new Error('FlatBuffers: ByteBuffer is too short to contain an identifier.');
+        }
+        let result = "";
+        for (let i = 0; i < FILE_IDENTIFIER_LENGTH; i++) {
+            result += String.fromCharCode(this.readInt8(this.position_ + SIZEOF_INT + i));
+        }
+        return result;
+    }
+    /**
+     * Look up a field in the vtable, return an offset into the object, or 0 if the
+     * field is not present.
+     */
+    __offset(bb_pos, vtable_offset) {
+        const vtable = bb_pos - this.readInt32(bb_pos);
+        return vtable_offset < this.readInt16(vtable) ? this.readInt16(vtable + vtable_offset) : 0;
+    }
+    /**
+     * Initialize any Table-derived type to point to the union at the given offset.
+     */
+    __union(t, offset) {
+        t.bb_pos = offset + this.readInt32(offset);
+        t.bb = this;
+        return t;
+    }
+    /**
+     * Create a JavaScript string from UTF-8 data stored inside the FlatBuffer.
+     * This allocates a new string and converts to wide chars upon each access.
+     *
+     * To avoid the conversion to UTF-16, pass Encoding.UTF8_BYTES as
+     * the "optionalEncoding" argument. This is useful for avoiding conversion to
+     * and from UTF-16 when the data will just be packaged back up in another
+     * FlatBuffer later on.
+     *
+     * @param offset
+     * @param opt_encoding Defaults to UTF16_STRING
+     */
+    __string(offset, opt_encoding) {
+        offset += this.readInt32(offset);
+        const length = this.readInt32(offset);
+        let result = '';
+        let i = 0;
+        offset += SIZEOF_INT;
+        if (opt_encoding === Encoding.UTF8_BYTES) {
+            return this.bytes_.subarray(offset, offset + length);
+        }
+        while (i < length) {
+            let codePoint;
+            // Decode UTF-8
+            const a = this.readUint8(offset + i++);
+            if (a < 0xC0) {
+                codePoint = a;
+            }
+            else {
+                const b = this.readUint8(offset + i++);
+                if (a < 0xE0) {
+                    codePoint =
+                        ((a & 0x1F) << 6) |
+                            (b & 0x3F);
+                }
+                else {
+                    const c = this.readUint8(offset + i++);
+                    if (a < 0xF0) {
+                        codePoint =
+                            ((a & 0x0F) << 12) |
+                                ((b & 0x3F) << 6) |
+                                (c & 0x3F);
+                    }
+                    else {
+                        const d = this.readUint8(offset + i++);
+                        codePoint =
+                            ((a & 0x07) << 18) |
+                                ((b & 0x3F) << 12) |
+                                ((c & 0x3F) << 6) |
+                                (d & 0x3F);
+                    }
+                }
+            }
+            // Encode UTF-16
+            if (codePoint < 0x10000) {
+                result += String.fromCharCode(codePoint);
+            }
+            else {
+                codePoint -= 0x10000;
+                result += String.fromCharCode((codePoint >> 10) + 0xD800, (codePoint & ((1 << 10) - 1)) + 0xDC00);
+            }
+        }
+        return result;
+    }
+    /**
+     * Handle unions that can contain string as its member, if a Table-derived type then initialize it,
+     * if a string then return a new one
+     *
+     * WARNING: strings are immutable in JS so we can't change the string that the user gave us, this
+     * makes the behaviour of __union_with_string different compared to __union
+     */
+    __union_with_string(o, offset) {
+        if (typeof o === 'string') {
+            return this.__string(offset);
+        }
+        return this.__union(o, offset);
+    }
+    /**
+     * Retrieve the relative offset stored at "offset"
+     */
+    __indirect(offset) {
+        return offset + this.readInt32(offset);
+    }
+    /**
+     * Get the start of data of a vector whose offset is stored at "offset" in this object.
+     */
+    __vector(offset) {
+        return offset + this.readInt32(offset) + SIZEOF_INT; // data starts after the length
+    }
+    /**
+     * Get the length of a vector whose offset is stored at "offset" in this object.
+     */
+    __vector_len(offset) {
+        return this.readInt32(offset + this.readInt32(offset));
+    }
+    __has_identifier(ident) {
+        if (ident.length != FILE_IDENTIFIER_LENGTH) {
+            throw new Error('FlatBuffers: file identifier must be length ' +
+                FILE_IDENTIFIER_LENGTH);
+        }
+        for (let i = 0; i < FILE_IDENTIFIER_LENGTH; i++) {
+            if (ident.charCodeAt(i) != this.readInt8(this.position() + SIZEOF_INT + i)) {
+                return false;
+            }
+        }
+        return true;
+    }
+    /**
+     * A helper function to avoid generated code depending on this file directly.
+     */
+    createLong(low, high) {
+        return Long.create(low, high);
+    }
+    /**
+     * A helper function for generating list for obj api
+     */
+    createScalarList(listAccessor, listLength) {
+        const ret = [];
+        for (let i = 0; i < listLength; ++i) {
+            if (listAccessor(i) !== null) {
+                ret.push(listAccessor(i));
+            }
+        }
+        return ret;
+    }
+    /**
+     * A helper function for generating list for obj api
+     * @param listAccessor function that accepts an index and return data at that index
+     * @param listLength listLength
+     * @param res result list
+     */
+    createObjList(listAccessor, listLength) {
+        const ret = [];
+        for (let i = 0; i < listLength; ++i) {
+            const val = listAccessor(i);
+            if (val !== null) {
+                ret.push(val.unpack());
+            }
+        }
+        return ret;
+    }
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/constants.d.ts b/igv_component/node_modules/flatbuffers/mjs/constants.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b765d6376efb218013e4ea885ce8c6ef06e08250
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/constants.d.ts
@@ -0,0 +1,4 @@
+export declare const SIZEOF_SHORT = 2;
+export declare const SIZEOF_INT = 4;
+export declare const FILE_IDENTIFIER_LENGTH = 4;
+export declare const SIZE_PREFIX_LENGTH = 4;
diff --git a/igv_component/node_modules/flatbuffers/mjs/constants.js b/igv_component/node_modules/flatbuffers/mjs/constants.js
new file mode 100644
index 0000000000000000000000000000000000000000..cb70ceddb5970ab631023a34dcb5cd10eec8d9b0
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/constants.js
@@ -0,0 +1,4 @@
+export const SIZEOF_SHORT = 2;
+export const SIZEOF_INT = 4;
+export const FILE_IDENTIFIER_LENGTH = 4;
+export const SIZE_PREFIX_LENGTH = 4;
diff --git a/igv_component/node_modules/flatbuffers/mjs/encoding.d.ts b/igv_component/node_modules/flatbuffers/mjs/encoding.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..4d6dcb56f5f6c454eabd76a3ebb3c358ad5b2390
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/encoding.d.ts
@@ -0,0 +1,4 @@
+export declare enum Encoding {
+    UTF8_BYTES = 1,
+    UTF16_STRING = 2
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/encoding.js b/igv_component/node_modules/flatbuffers/mjs/encoding.js
new file mode 100644
index 0000000000000000000000000000000000000000..0de14aa90b59d0e2811148b303db968a16cc4213
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/encoding.js
@@ -0,0 +1,5 @@
+export var Encoding;
+(function (Encoding) {
+    Encoding[Encoding["UTF8_BYTES"] = 1] = "UTF8_BYTES";
+    Encoding[Encoding["UTF16_STRING"] = 2] = "UTF16_STRING";
+})(Encoding || (Encoding = {}));
diff --git a/igv_component/node_modules/flatbuffers/mjs/flatbuffers.d.ts b/igv_component/node_modules/flatbuffers/mjs/flatbuffers.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..bf517590f20fbb32970c1567574db0161b97e568
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flatbuffers.d.ts
@@ -0,0 +1,10 @@
+export { SIZEOF_SHORT } from './constants';
+export { SIZEOF_INT } from './constants';
+export { FILE_IDENTIFIER_LENGTH } from './constants';
+export { SIZE_PREFIX_LENGTH } from './constants';
+export { Table, Offset } from './types';
+export { int32, float32, float64, isLittleEndian } from './utils';
+export { Long, createLong } from './long';
+export { Encoding } from './encoding';
+export { Builder } from './builder';
+export { ByteBuffer } from './byte-buffer';
diff --git a/igv_component/node_modules/flatbuffers/mjs/flatbuffers.js b/igv_component/node_modules/flatbuffers/mjs/flatbuffers.js
new file mode 100644
index 0000000000000000000000000000000000000000..d8ac13b1c3987ea54192325453dc61058dbc679a
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flatbuffers.js
@@ -0,0 +1,9 @@
+export { SIZEOF_SHORT } from './constants';
+export { SIZEOF_INT } from './constants';
+export { FILE_IDENTIFIER_LENGTH } from './constants';
+export { SIZE_PREFIX_LENGTH } from './constants';
+export { int32, float32, float64, isLittleEndian } from './utils';
+export { Long, createLong } from './long';
+export { Encoding } from './encoding';
+export { Builder } from './builder';
+export { ByteBuffer } from './byte-buffer';
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers.d.ts b/igv_component/node_modules/flatbuffers/mjs/flexbuffers.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..d22a937dd86e5455910f6ea62d51dd2e00094263
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers.d.ts
@@ -0,0 +1,5 @@
+import { Builder } from './flexbuffers/builder';
+export { toReference } from './flexbuffers/reference';
+export declare function builder(): Builder;
+export declare function toObject(buffer: ArrayBuffer): unknown;
+export declare function encode(object: unknown, size?: number, deduplicateStrings?: boolean, deduplicateKeys?: boolean, deduplicateKeyVectors?: boolean): Uint8Array;
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers.js b/igv_component/node_modules/flatbuffers/mjs/flexbuffers.js
new file mode 100644
index 0000000000000000000000000000000000000000..0404dbb3931e14e67f5c4c182ee3a18087a9047c
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers.js
@@ -0,0 +1,15 @@
+/* eslint-disable @typescript-eslint/no-namespace */
+import { Builder } from './flexbuffers/builder';
+import { toReference } from './flexbuffers/reference';
+export { toReference } from './flexbuffers/reference';
+export function builder() {
+    return new Builder();
+}
+export function toObject(buffer) {
+    return toReference(buffer).toObject();
+}
+export function encode(object, size = 2048, deduplicateStrings = true, deduplicateKeys = true, deduplicateKeyVectors = true) {
+    const builder = new Builder(size > 0 ? size : 2048, deduplicateStrings, deduplicateKeys, deduplicateKeyVectors);
+    builder.add(object);
+    return builder.finish();
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/bit-width-util.d.ts b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/bit-width-util.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..347ee70004d9d709ad4b84fc30789417a01e45aa
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/bit-width-util.d.ts
@@ -0,0 +1,7 @@
+import { BitWidth } from './bit-width';
+export declare function toByteWidth(bitWidth: BitWidth): number;
+export declare function iwidth(value: number | bigint): BitWidth;
+export declare function fwidth(value: number): BitWidth;
+export declare function uwidth(value: number): BitWidth;
+export declare function fromByteWidth(value: number): BitWidth;
+export declare function paddingSize(bufSize: number, scalarSize: number): number;
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/bit-width-util.js b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/bit-width-util.js
new file mode 100644
index 0000000000000000000000000000000000000000..255e29a37b7f09c072bb07143f70edb21f36ab94
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/bit-width-util.js
@@ -0,0 +1,37 @@
+import { BitWidth } from './bit-width';
+export function toByteWidth(bitWidth) {
+    return 1 << bitWidth;
+}
+export function iwidth(value) {
+    if (value >= -128 && value <= 127)
+        return BitWidth.WIDTH8;
+    if (value >= -32768 && value <= 32767)
+        return BitWidth.WIDTH16;
+    if (value >= -2147483648 && value <= 2147483647)
+        return BitWidth.WIDTH32;
+    return BitWidth.WIDTH64;
+}
+export function fwidth(value) {
+    return value === Math.fround(value) ? BitWidth.WIDTH32 : BitWidth.WIDTH64;
+}
+export function uwidth(value) {
+    if (value <= 255)
+        return BitWidth.WIDTH8;
+    if (value <= 65535)
+        return BitWidth.WIDTH16;
+    if (value <= 4294967295)
+        return BitWidth.WIDTH32;
+    return BitWidth.WIDTH64;
+}
+export function fromByteWidth(value) {
+    if (value === 1)
+        return BitWidth.WIDTH8;
+    if (value === 2)
+        return BitWidth.WIDTH16;
+    if (value === 4)
+        return BitWidth.WIDTH32;
+    return BitWidth.WIDTH64;
+}
+export function paddingSize(bufSize, scalarSize) {
+    return (~bufSize + 1) & (scalarSize - 1);
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/bit-width.d.ts b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/bit-width.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..12b25e049d7a3d26d93eb0f2cc164090424d3684
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/bit-width.d.ts
@@ -0,0 +1,6 @@
+export declare enum BitWidth {
+    WIDTH8 = 0,
+    WIDTH16 = 1,
+    WIDTH32 = 2,
+    WIDTH64 = 3
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/bit-width.js b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/bit-width.js
new file mode 100644
index 0000000000000000000000000000000000000000..422956f48082b08caee70342606a257488a33344
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/bit-width.js
@@ -0,0 +1,7 @@
+export var BitWidth;
+(function (BitWidth) {
+    BitWidth[BitWidth["WIDTH8"] = 0] = "WIDTH8";
+    BitWidth[BitWidth["WIDTH16"] = 1] = "WIDTH16";
+    BitWidth[BitWidth["WIDTH32"] = 2] = "WIDTH32";
+    BitWidth[BitWidth["WIDTH64"] = 3] = "WIDTH64";
+})(BitWidth || (BitWidth = {}));
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/builder.d.ts b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/builder.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..db961952b078fb87ef42ef1cf4922b761e19d93a
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/builder.d.ts
@@ -0,0 +1,59 @@
+import { BitWidth } from './bit-width';
+import { StackValue } from './stack-value';
+interface StackPointer {
+    stackPosition: number;
+    isVector: boolean;
+    presorted?: boolean;
+}
+export declare class Builder {
+    private dedupStrings;
+    private dedupKeys;
+    private dedupKeyVectors;
+    buffer: ArrayBuffer;
+    view: DataView;
+    readonly stack: Array<StackValue>;
+    readonly stackPointers: Array<StackPointer>;
+    offset: number;
+    finished: boolean;
+    readonly stringLookup: Record<string, StackValue>;
+    readonly keyLookup: Record<string, StackValue>;
+    readonly keyVectorLookup: Record<string, StackValue>;
+    readonly indirectIntLookup: Record<number, StackValue>;
+    readonly indirectUIntLookup: Record<number, StackValue>;
+    readonly indirectFloatLookup: Record<number, StackValue>;
+    constructor(size?: number, dedupStrings?: boolean, dedupKeys?: boolean, dedupKeyVectors?: boolean);
+    private align;
+    computeOffset(newValueSize: number): number;
+    pushInt(value: number, width: BitWidth): void;
+    pushUInt(value: number, width: BitWidth): void;
+    private writeInt;
+    private writeUInt;
+    private writeBlob;
+    private writeString;
+    private writeKey;
+    private writeStackValue;
+    private integrityCheckOnValueAddition;
+    private integrityCheckOnKeyAddition;
+    startVector(): void;
+    startMap(presorted?: boolean): void;
+    private endVector;
+    private endMap;
+    private sort;
+    end(): void;
+    private createVector;
+    private nullStackValue;
+    private boolStackValue;
+    private intStackValue;
+    private uintStackValue;
+    private floatStackValue;
+    private offsetStackValue;
+    private finishBuffer;
+    add(value: undefined | null | boolean | bigint | number | DataView | string | Array<unknown> | Record<string, unknown> | unknown): void;
+    finish(): Uint8Array;
+    isFinished(): boolean;
+    addKey(key: string): void;
+    addInt(value: number, indirect?: boolean, deduplicate?: boolean): void;
+    addUInt(value: number, indirect?: boolean, deduplicate?: boolean): void;
+    addFloat(value: number, indirect?: boolean, deduplicate?: boolean): void;
+}
+export {};
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/builder.js b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/builder.js
new file mode 100644
index 0000000000000000000000000000000000000000..fab3e6a058f96406957b21dee46a6cdd81a45810
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/builder.js
@@ -0,0 +1,524 @@
+import { BitWidth } from './bit-width';
+import { paddingSize, iwidth, uwidth, fwidth, toByteWidth, fromByteWidth } from './bit-width-util';
+import { toUTF8Array } from './flexbuffers-util';
+import { ValueType } from './value-type';
+import { isNumber, isTypedVectorElement, toTypedVector } from './value-type-util';
+import { StackValue } from './stack-value';
+export class Builder {
+    constructor(size = 2048, dedupStrings = true, dedupKeys = true, dedupKeyVectors = true) {
+        this.dedupStrings = dedupStrings;
+        this.dedupKeys = dedupKeys;
+        this.dedupKeyVectors = dedupKeyVectors;
+        this.stack = [];
+        this.stackPointers = [];
+        this.offset = 0;
+        this.finished = false;
+        this.stringLookup = {};
+        this.keyLookup = {};
+        this.keyVectorLookup = {};
+        this.indirectIntLookup = {};
+        this.indirectUIntLookup = {};
+        this.indirectFloatLookup = {};
+        this.buffer = new ArrayBuffer(size > 0 ? size : 2048);
+        this.view = new DataView(this.buffer);
+    }
+    align(width) {
+        const byteWidth = toByteWidth(width);
+        this.offset += paddingSize(this.offset, byteWidth);
+        return byteWidth;
+    }
+    computeOffset(newValueSize) {
+        const targetOffset = this.offset + newValueSize;
+        let size = this.buffer.byteLength;
+        const prevSize = size;
+        while (size < targetOffset) {
+            size <<= 1;
+        }
+        if (prevSize < size) {
+            const prevBuffer = this.buffer;
+            this.buffer = new ArrayBuffer(size);
+            this.view = new DataView(this.buffer);
+            new Uint8Array(this.buffer).set(new Uint8Array(prevBuffer), 0);
+        }
+        return targetOffset;
+    }
+    pushInt(value, width) {
+        if (width === BitWidth.WIDTH8) {
+            this.view.setInt8(this.offset, value);
+        }
+        else if (width === BitWidth.WIDTH16) {
+            this.view.setInt16(this.offset, value, true);
+        }
+        else if (width === BitWidth.WIDTH32) {
+            this.view.setInt32(this.offset, value, true);
+        }
+        else if (width === BitWidth.WIDTH64) {
+            this.view.setBigInt64(this.offset, BigInt(value), true);
+        }
+        else {
+            throw `Unexpected width: ${width} for value: ${value}`;
+        }
+    }
+    pushUInt(value, width) {
+        if (width === BitWidth.WIDTH8) {
+            this.view.setUint8(this.offset, value);
+        }
+        else if (width === BitWidth.WIDTH16) {
+            this.view.setUint16(this.offset, value, true);
+        }
+        else if (width === BitWidth.WIDTH32) {
+            this.view.setUint32(this.offset, value, true);
+        }
+        else if (width === BitWidth.WIDTH64) {
+            this.view.setBigUint64(this.offset, BigInt(value), true);
+        }
+        else {
+            throw `Unexpected width: ${width} for value: ${value}`;
+        }
+    }
+    writeInt(value, byteWidth) {
+        const newOffset = this.computeOffset(byteWidth);
+        this.pushInt(value, fromByteWidth(byteWidth));
+        this.offset = newOffset;
+    }
+    writeUInt(value, byteWidth) {
+        const newOffset = this.computeOffset(byteWidth);
+        this.pushUInt(value, fromByteWidth(byteWidth));
+        this.offset = newOffset;
+    }
+    writeBlob(arrayBuffer) {
+        const length = arrayBuffer.byteLength;
+        const bitWidth = uwidth(length);
+        const byteWidth = this.align(bitWidth);
+        this.writeUInt(length, byteWidth);
+        const blobOffset = this.offset;
+        const newOffset = this.computeOffset(length);
+        new Uint8Array(this.buffer).set(new Uint8Array(arrayBuffer), blobOffset);
+        this.stack.push(this.offsetStackValue(blobOffset, ValueType.BLOB, bitWidth));
+        this.offset = newOffset;
+    }
+    writeString(str) {
+        if (this.dedupStrings && Object.prototype.hasOwnProperty.call(this.stringLookup, str)) {
+            this.stack.push(this.stringLookup[str]);
+            return;
+        }
+        const utf8 = toUTF8Array(str);
+        const length = utf8.length;
+        const bitWidth = uwidth(length);
+        const byteWidth = this.align(bitWidth);
+        this.writeUInt(length, byteWidth);
+        const stringOffset = this.offset;
+        const newOffset = this.computeOffset(length + 1);
+        new Uint8Array(this.buffer).set(utf8, stringOffset);
+        const stackValue = this.offsetStackValue(stringOffset, ValueType.STRING, bitWidth);
+        this.stack.push(stackValue);
+        if (this.dedupStrings) {
+            this.stringLookup[str] = stackValue;
+        }
+        this.offset = newOffset;
+    }
+    writeKey(str) {
+        if (this.dedupKeys && Object.prototype.hasOwnProperty.call(this.keyLookup, str)) {
+            this.stack.push(this.keyLookup[str]);
+            return;
+        }
+        const utf8 = toUTF8Array(str);
+        const length = utf8.length;
+        const newOffset = this.computeOffset(length + 1);
+        new Uint8Array(this.buffer).set(utf8, this.offset);
+        const stackValue = this.offsetStackValue(this.offset, ValueType.KEY, BitWidth.WIDTH8);
+        this.stack.push(stackValue);
+        if (this.dedupKeys) {
+            this.keyLookup[str] = stackValue;
+        }
+        this.offset = newOffset;
+    }
+    writeStackValue(value, byteWidth) {
+        const newOffset = this.computeOffset(byteWidth);
+        if (value.isOffset()) {
+            const relativeOffset = this.offset - value.offset;
+            if (byteWidth === 8 || BigInt(relativeOffset) < (BigInt(1) << BigInt(byteWidth * 8))) {
+                this.writeUInt(relativeOffset, byteWidth);
+            }
+            else {
+                throw `Unexpected size ${byteWidth}. This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new`;
+            }
+        }
+        else {
+            value.writeToBuffer(byteWidth);
+        }
+        this.offset = newOffset;
+    }
+    integrityCheckOnValueAddition() {
+        if (this.finished) {
+            throw "Adding values after finish is prohibited";
+        }
+        if (this.stackPointers.length !== 0 && this.stackPointers[this.stackPointers.length - 1].isVector === false) {
+            if (this.stack[this.stack.length - 1].type !== ValueType.KEY) {
+                throw "Adding value to a map before adding a key is prohibited";
+            }
+        }
+    }
+    integrityCheckOnKeyAddition() {
+        if (this.finished) {
+            throw "Adding values after finish is prohibited";
+        }
+        if (this.stackPointers.length === 0 || this.stackPointers[this.stackPointers.length - 1].isVector) {
+            throw "Adding key before starting a map is prohibited";
+        }
+    }
+    startVector() {
+        this.stackPointers.push({ stackPosition: this.stack.length, isVector: true });
+    }
+    startMap(presorted = false) {
+        this.stackPointers.push({ stackPosition: this.stack.length, isVector: false, presorted: presorted });
+    }
+    endVector(stackPointer) {
+        const vecLength = this.stack.length - stackPointer.stackPosition;
+        const vec = this.createVector(stackPointer.stackPosition, vecLength, 1);
+        this.stack.splice(stackPointer.stackPosition, vecLength);
+        this.stack.push(vec);
+    }
+    endMap(stackPointer) {
+        if (!stackPointer.presorted) {
+            this.sort(stackPointer);
+        }
+        let keyVectorHash = "";
+        for (let i = stackPointer.stackPosition; i < this.stack.length; i += 2) {
+            keyVectorHash += `,${this.stack[i].offset}`;
+        }
+        const vecLength = (this.stack.length - stackPointer.stackPosition) >> 1;
+        if (this.dedupKeyVectors && !Object.prototype.hasOwnProperty.call(this.keyVectorLookup, keyVectorHash)) {
+            this.keyVectorLookup[keyVectorHash] = this.createVector(stackPointer.stackPosition, vecLength, 2);
+        }
+        const keysStackValue = this.dedupKeyVectors ? this.keyVectorLookup[keyVectorHash] : this.createVector(stackPointer.stackPosition, vecLength, 2);
+        const valuesStackValue = this.createVector(stackPointer.stackPosition + 1, vecLength, 2, keysStackValue);
+        this.stack.splice(stackPointer.stackPosition, vecLength << 1);
+        this.stack.push(valuesStackValue);
+    }
+    sort(stackPointer) {
+        const view = this.view;
+        const stack = this.stack;
+        function shouldFlip(v1, v2) {
+            if (v1.type !== ValueType.KEY || v2.type !== ValueType.KEY) {
+                throw `Stack values are not keys ${v1} | ${v2}. Check if you combined [addKey] with add... method calls properly.`;
+            }
+            let c1, c2;
+            let index = 0;
+            do {
+                c1 = view.getUint8(v1.offset + index);
+                c2 = view.getUint8(v2.offset + index);
+                if (c2 < c1)
+                    return true;
+                if (c1 < c2)
+                    return false;
+                index += 1;
+            } while (c1 !== 0 && c2 !== 0);
+            return false;
+        }
+        function swap(stack, flipIndex, i) {
+            if (flipIndex === i)
+                return;
+            const k = stack[flipIndex];
+            const v = stack[flipIndex + 1];
+            stack[flipIndex] = stack[i];
+            stack[flipIndex + 1] = stack[i + 1];
+            stack[i] = k;
+            stack[i + 1] = v;
+        }
+        function selectionSort() {
+            for (let i = stackPointer.stackPosition; i < stack.length; i += 2) {
+                let flipIndex = i;
+                for (let j = i + 2; j < stack.length; j += 2) {
+                    if (shouldFlip(stack[flipIndex], stack[j])) {
+                        flipIndex = j;
+                    }
+                }
+                if (flipIndex !== i) {
+                    swap(stack, flipIndex, i);
+                }
+            }
+        }
+        function smaller(v1, v2) {
+            if (v1.type !== ValueType.KEY || v2.type !== ValueType.KEY) {
+                throw `Stack values are not keys ${v1} | ${v2}. Check if you combined [addKey] with add... method calls properly.`;
+            }
+            if (v1.offset === v2.offset) {
+                return false;
+            }
+            let c1, c2;
+            let index = 0;
+            do {
+                c1 = view.getUint8(v1.offset + index);
+                c2 = view.getUint8(v2.offset + index);
+                if (c1 < c2)
+                    return true;
+                if (c2 < c1)
+                    return false;
+                index += 1;
+            } while (c1 !== 0 && c2 !== 0);
+            return false;
+        }
+        function quickSort(left, right) {
+            if (left < right) {
+                const mid = left + (((right - left) >> 2)) * 2;
+                const pivot = stack[mid];
+                let left_new = left;
+                let right_new = right;
+                do {
+                    while (smaller(stack[left_new], pivot)) {
+                        left_new += 2;
+                    }
+                    while (smaller(pivot, stack[right_new])) {
+                        right_new -= 2;
+                    }
+                    if (left_new <= right_new) {
+                        swap(stack, left_new, right_new);
+                        left_new += 2;
+                        right_new -= 2;
+                    }
+                } while (left_new <= right_new);
+                quickSort(left, right_new);
+                quickSort(left_new, right);
+            }
+        }
+        let sorted = true;
+        for (let i = stackPointer.stackPosition; i < this.stack.length - 2; i += 2) {
+            if (shouldFlip(this.stack[i], this.stack[i + 2])) {
+                sorted = false;
+                break;
+            }
+        }
+        if (!sorted) {
+            if (this.stack.length - stackPointer.stackPosition > 40) {
+                quickSort(stackPointer.stackPosition, this.stack.length - 2);
+            }
+            else {
+                selectionSort();
+            }
+        }
+    }
+    end() {
+        if (this.stackPointers.length < 1)
+            return;
+        const pointer = this.stackPointers.pop();
+        if (pointer.isVector) {
+            this.endVector(pointer);
+        }
+        else {
+            this.endMap(pointer);
+        }
+    }
+    createVector(start, vecLength, step, keys = null) {
+        let bitWidth = uwidth(vecLength);
+        let prefixElements = 1;
+        if (keys !== null) {
+            const elementWidth = keys.elementWidth(this.offset, 0);
+            if (elementWidth > bitWidth) {
+                bitWidth = elementWidth;
+            }
+            prefixElements += 2;
+        }
+        let vectorType = ValueType.KEY;
+        let typed = keys === null;
+        for (let i = start; i < this.stack.length; i += step) {
+            const elementWidth = this.stack[i].elementWidth(this.offset, i + prefixElements);
+            if (elementWidth > bitWidth) {
+                bitWidth = elementWidth;
+            }
+            if (i === start) {
+                vectorType = this.stack[i].type;
+                typed = typed && isTypedVectorElement(vectorType);
+            }
+            else {
+                if (vectorType !== this.stack[i].type) {
+                    typed = false;
+                }
+            }
+        }
+        const byteWidth = this.align(bitWidth);
+        const fix = typed && isNumber(vectorType) && vecLength >= 2 && vecLength <= 4;
+        if (keys !== null) {
+            this.writeStackValue(keys, byteWidth);
+            this.writeUInt(1 << keys.width, byteWidth);
+        }
+        if (!fix) {
+            this.writeUInt(vecLength, byteWidth);
+        }
+        const vecOffset = this.offset;
+        for (let i = start; i < this.stack.length; i += step) {
+            this.writeStackValue(this.stack[i], byteWidth);
+        }
+        if (!typed) {
+            for (let i = start; i < this.stack.length; i += step) {
+                this.writeUInt(this.stack[i].storedPackedType(), 1);
+            }
+        }
+        if (keys !== null) {
+            return this.offsetStackValue(vecOffset, ValueType.MAP, bitWidth);
+        }
+        if (typed) {
+            const vType = toTypedVector(vectorType, fix ? vecLength : 0);
+            return this.offsetStackValue(vecOffset, vType, bitWidth);
+        }
+        return this.offsetStackValue(vecOffset, ValueType.VECTOR, bitWidth);
+    }
+    nullStackValue() {
+        return new StackValue(this, ValueType.NULL, BitWidth.WIDTH8);
+    }
+    boolStackValue(value) {
+        return new StackValue(this, ValueType.BOOL, BitWidth.WIDTH8, value);
+    }
+    intStackValue(value) {
+        return new StackValue(this, ValueType.INT, iwidth(value), value);
+    }
+    uintStackValue(value) {
+        return new StackValue(this, ValueType.UINT, uwidth(value), value);
+    }
+    floatStackValue(value) {
+        return new StackValue(this, ValueType.FLOAT, fwidth(value), value);
+    }
+    offsetStackValue(offset, valueType, bitWidth) {
+        return new StackValue(this, valueType, bitWidth, null, offset);
+    }
+    finishBuffer() {
+        if (this.stack.length !== 1) {
+            throw `Stack has to be exactly 1, but it is ${this.stack.length}. You have to end all started vectors and maps before calling [finish]`;
+        }
+        const value = this.stack[0];
+        const byteWidth = this.align(value.elementWidth(this.offset, 0));
+        this.writeStackValue(value, byteWidth);
+        this.writeUInt(value.storedPackedType(), 1);
+        this.writeUInt(byteWidth, 1);
+        this.finished = true;
+    }
+    add(value) {
+        this.integrityCheckOnValueAddition();
+        if (typeof value === 'undefined') {
+            throw "You need to provide a value";
+        }
+        if (value === null) {
+            this.stack.push(this.nullStackValue());
+        }
+        else if (typeof value === "boolean") {
+            this.stack.push(this.boolStackValue(value));
+        }
+        else if (typeof value === "bigint") {
+            this.stack.push(this.intStackValue(value));
+        }
+        else if (typeof value == 'number') {
+            if (Number.isInteger(value)) {
+                this.stack.push(this.intStackValue(value));
+            }
+            else {
+                this.stack.push(this.floatStackValue(value));
+            }
+        }
+        else if (ArrayBuffer.isView(value)) {
+            this.writeBlob(value.buffer);
+        }
+        else if (typeof value === 'string' || value instanceof String) {
+            this.writeString(value);
+        }
+        else if (Array.isArray(value)) {
+            this.startVector();
+            for (let i = 0; i < value.length; i++) {
+                this.add(value[i]);
+            }
+            this.end();
+        }
+        else if (typeof value === 'object') {
+            const properties = Object.getOwnPropertyNames(value).sort();
+            this.startMap(true);
+            for (let i = 0; i < properties.length; i++) {
+                const key = properties[i];
+                this.addKey(key);
+                this.add(value[key]);
+            }
+            this.end();
+        }
+        else {
+            throw `Unexpected value input ${value}`;
+        }
+    }
+    finish() {
+        if (!this.finished) {
+            this.finishBuffer();
+        }
+        const result = this.buffer.slice(0, this.offset);
+        return new Uint8Array(result);
+    }
+    isFinished() {
+        return this.finished;
+    }
+    addKey(key) {
+        this.integrityCheckOnKeyAddition();
+        this.writeKey(key);
+    }
+    addInt(value, indirect = false, deduplicate = false) {
+        this.integrityCheckOnValueAddition();
+        if (!indirect) {
+            this.stack.push(this.intStackValue(value));
+            return;
+        }
+        if (deduplicate && Object.prototype.hasOwnProperty.call(this.indirectIntLookup, value)) {
+            this.stack.push(this.indirectIntLookup[value]);
+            return;
+        }
+        const stackValue = this.intStackValue(value);
+        const byteWidth = this.align(stackValue.width);
+        const newOffset = this.computeOffset(byteWidth);
+        const valueOffset = this.offset;
+        stackValue.writeToBuffer(byteWidth);
+        const stackOffset = this.offsetStackValue(valueOffset, ValueType.INDIRECT_INT, stackValue.width);
+        this.stack.push(stackOffset);
+        this.offset = newOffset;
+        if (deduplicate) {
+            this.indirectIntLookup[value] = stackOffset;
+        }
+    }
+    addUInt(value, indirect = false, deduplicate = false) {
+        this.integrityCheckOnValueAddition();
+        if (!indirect) {
+            this.stack.push(this.uintStackValue(value));
+            return;
+        }
+        if (deduplicate && Object.prototype.hasOwnProperty.call(this.indirectUIntLookup, value)) {
+            this.stack.push(this.indirectUIntLookup[value]);
+            return;
+        }
+        const stackValue = this.uintStackValue(value);
+        const byteWidth = this.align(stackValue.width);
+        const newOffset = this.computeOffset(byteWidth);
+        const valueOffset = this.offset;
+        stackValue.writeToBuffer(byteWidth);
+        const stackOffset = this.offsetStackValue(valueOffset, ValueType.INDIRECT_UINT, stackValue.width);
+        this.stack.push(stackOffset);
+        this.offset = newOffset;
+        if (deduplicate) {
+            this.indirectUIntLookup[value] = stackOffset;
+        }
+    }
+    addFloat(value, indirect = false, deduplicate = false) {
+        this.integrityCheckOnValueAddition();
+        if (!indirect) {
+            this.stack.push(this.floatStackValue(value));
+            return;
+        }
+        if (deduplicate && Object.prototype.hasOwnProperty.call(this.indirectFloatLookup, value)) {
+            this.stack.push(this.indirectFloatLookup[value]);
+            return;
+        }
+        const stackValue = this.floatStackValue(value);
+        const byteWidth = this.align(stackValue.width);
+        const newOffset = this.computeOffset(byteWidth);
+        const valueOffset = this.offset;
+        stackValue.writeToBuffer(byteWidth);
+        const stackOffset = this.offsetStackValue(valueOffset, ValueType.INDIRECT_FLOAT, stackValue.width);
+        this.stack.push(stackOffset);
+        this.offset = newOffset;
+        if (deduplicate) {
+            this.indirectFloatLookup[value] = stackOffset;
+        }
+    }
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/flexbuffers-util.d.ts b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/flexbuffers-util.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b55a764b61fa38f2ea363bc08181e2fe175a55ce
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/flexbuffers-util.d.ts
@@ -0,0 +1,2 @@
+export declare function fromUTF8Array(data: BufferSource): string;
+export declare function toUTF8Array(str: string): Uint8Array;
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/flexbuffers-util.js b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/flexbuffers-util.js
new file mode 100644
index 0000000000000000000000000000000000000000..e8c2b4e343c9d3e375084d1adb9b3a6d56914fe5
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/flexbuffers-util.js
@@ -0,0 +1,8 @@
+export function fromUTF8Array(data) {
+    const decoder = new TextDecoder();
+    return decoder.decode(data);
+}
+export function toUTF8Array(str) {
+    const encoder = new TextEncoder();
+    return encoder.encode(str);
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/reference-util.d.ts b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/reference-util.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..74ba18ad918b5e675d403173c251d26f22e78bcc
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/reference-util.d.ts
@@ -0,0 +1,11 @@
+import { Reference } from './reference';
+import { Long } from '../long';
+export declare function validateOffset(dataView: DataView, offset: number, width: number): void;
+export declare function readInt(dataView: DataView, offset: number, width: number): number | Long | bigint;
+export declare function readUInt(dataView: DataView, offset: number, width: number): number | Long | bigint;
+export declare function readFloat(dataView: DataView, offset: number, width: number): number;
+export declare function indirect(dataView: DataView, offset: number, width: number): number;
+export declare function keyIndex(key: string, dataView: DataView, offset: number, parentWidth: number, byteWidth: number, length: number): number | null;
+export declare function diffKeys(input: Uint8Array, index: number, dataView: DataView, offset: number, width: number): number;
+export declare function valueForIndexWithKey(index: number, key: string, dataView: DataView, offset: number, parentWidth: number, byteWidth: number, length: number, path: string): Reference;
+export declare function keyForIndex(index: number, dataView: DataView, offset: number, parentWidth: number, byteWidth: number): string;
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/reference-util.js b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/reference-util.js
new file mode 100644
index 0000000000000000000000000000000000000000..3235115ea02d6de2b0bacee68160d0f66a85bfe8
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/reference-util.js
@@ -0,0 +1,117 @@
+import { BitWidth } from './bit-width';
+import { toByteWidth, fromByteWidth } from './bit-width-util';
+import { toUTF8Array, fromUTF8Array } from './flexbuffers-util';
+import { Reference } from './reference';
+import { Long } from '../long';
+export function validateOffset(dataView, offset, width) {
+    if (dataView.byteLength <= offset + width || (offset & (toByteWidth(width) - 1)) !== 0) {
+        throw "Bad offset: " + offset + ", width: " + width;
+    }
+}
+export function readInt(dataView, offset, width) {
+    if (width < 2) {
+        if (width < 1) {
+            return dataView.getInt8(offset);
+        }
+        else {
+            return dataView.getInt16(offset, true);
+        }
+    }
+    else {
+        if (width < 3) {
+            return dataView.getInt32(offset, true);
+        }
+        else {
+            if (dataView.setBigInt64 === undefined) {
+                return new Long(dataView.getUint32(offset, true), dataView.getUint32(offset + 4, true));
+            }
+            return dataView.getBigInt64(offset, true);
+        }
+    }
+}
+export function readUInt(dataView, offset, width) {
+    if (width < 2) {
+        if (width < 1) {
+            return dataView.getUint8(offset);
+        }
+        else {
+            return dataView.getUint16(offset, true);
+        }
+    }
+    else {
+        if (width < 3) {
+            return dataView.getUint32(offset, true);
+        }
+        else {
+            if (dataView.getBigUint64 === undefined) {
+                return new Long(dataView.getUint32(offset, true), dataView.getUint32(offset + 4, true));
+            }
+            return dataView.getBigUint64(offset, true);
+        }
+    }
+}
+export function readFloat(dataView, offset, width) {
+    if (width < BitWidth.WIDTH32) {
+        throw "Bad width: " + width;
+    }
+    if (width === BitWidth.WIDTH32) {
+        return dataView.getFloat32(offset, true);
+    }
+    return dataView.getFloat64(offset, true);
+}
+export function indirect(dataView, offset, width) {
+    const step = readUInt(dataView, offset, width);
+    return offset - step;
+}
+export function keyIndex(key, dataView, offset, parentWidth, byteWidth, length) {
+    const input = toUTF8Array(key);
+    const keysVectorOffset = indirect(dataView, offset, parentWidth) - byteWidth * 3;
+    const bitWidth = fromByteWidth(byteWidth);
+    const indirectOffset = keysVectorOffset - readUInt(dataView, keysVectorOffset, bitWidth);
+    const _byteWidth = readUInt(dataView, keysVectorOffset + byteWidth, bitWidth);
+    let low = 0;
+    let high = length - 1;
+    while (low <= high) {
+        const mid = (high + low) >> 1;
+        const dif = diffKeys(input, mid, dataView, indirectOffset, _byteWidth);
+        if (dif === 0)
+            return mid;
+        if (dif < 0) {
+            high = mid - 1;
+        }
+        else {
+            low = mid + 1;
+        }
+    }
+    return null;
+}
+export function diffKeys(input, index, dataView, offset, width) {
+    const keyOffset = offset + index * width;
+    const keyIndirectOffset = keyOffset - readUInt(dataView, keyOffset, fromByteWidth(width));
+    for (let i = 0; i < input.length; i++) {
+        const dif = input[i] - dataView.getUint8(keyIndirectOffset + i);
+        if (dif !== 0) {
+            return dif;
+        }
+    }
+    return dataView.getUint8(keyIndirectOffset + input.length) === 0 ? 0 : -1;
+}
+export function valueForIndexWithKey(index, key, dataView, offset, parentWidth, byteWidth, length, path) {
+    const _indirect = indirect(dataView, offset, parentWidth);
+    const elementOffset = _indirect + index * byteWidth;
+    const packedType = dataView.getUint8(_indirect + length * byteWidth + index);
+    return new Reference(dataView, elementOffset, fromByteWidth(byteWidth), packedType, `${path}/${key}`);
+}
+export function keyForIndex(index, dataView, offset, parentWidth, byteWidth) {
+    const keysVectorOffset = indirect(dataView, offset, parentWidth) - byteWidth * 3;
+    const bitWidth = fromByteWidth(byteWidth);
+    const indirectOffset = keysVectorOffset - readUInt(dataView, keysVectorOffset, bitWidth);
+    const _byteWidth = readUInt(dataView, keysVectorOffset + byteWidth, bitWidth);
+    const keyOffset = indirectOffset + index * _byteWidth;
+    const keyIndirectOffset = keyOffset - readUInt(dataView, keyOffset, fromByteWidth(_byteWidth));
+    let length = 0;
+    while (dataView.getUint8(keyIndirectOffset + length) !== 0) {
+        length++;
+    }
+    return fromUTF8Array(new Uint8Array(dataView.buffer, keyIndirectOffset, length));
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/reference.d.ts b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/reference.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e64d91ddd9dd5cd32408b33cbc91110a5e4a5848
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/reference.d.ts
@@ -0,0 +1,32 @@
+import { ValueType } from './value-type';
+import { Long } from '../long';
+export declare function toReference(buffer: ArrayBuffer): Reference;
+export declare class Reference {
+    private dataView;
+    private offset;
+    private parentWidth;
+    private packedType;
+    private path;
+    private readonly byteWidth;
+    private readonly valueType;
+    private _length;
+    constructor(dataView: DataView, offset: number, parentWidth: number, packedType: ValueType, path: string);
+    isNull(): boolean;
+    isNumber(): boolean;
+    isFloat(): boolean;
+    isInt(): boolean;
+    isString(): boolean;
+    isBool(): boolean;
+    isBlob(): boolean;
+    isVector(): boolean;
+    isMap(): boolean;
+    boolValue(): boolean | null;
+    intValue(): number | Long | bigint | null;
+    floatValue(): number | null;
+    numericValue(): number | Long | bigint | null;
+    stringValue(): string | null;
+    blobValue(): Uint8Array | null;
+    get(key: number): Reference;
+    length(): number;
+    toObject(): unknown;
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/reference.js b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/reference.js
new file mode 100644
index 0000000000000000000000000000000000000000..8d17a7a6a9e8e010af6b9d301c019506f3076267
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/reference.js
@@ -0,0 +1,178 @@
+import { fromByteWidth } from './bit-width-util';
+import { ValueType } from './value-type';
+import { isNumber, isIndirectNumber, isAVector, fixedTypedVectorElementSize, isFixedTypedVector, isTypedVector, typedVectorElementType, packedType, fixedTypedVectorElementType } from './value-type-util';
+import { indirect, keyForIndex, keyIndex, readFloat, readInt, readUInt, valueForIndexWithKey } from './reference-util';
+import { fromUTF8Array } from './flexbuffers-util';
+import { BitWidth } from './bit-width';
+export function toReference(buffer) {
+    const len = buffer.byteLength;
+    if (len < 3) {
+        throw "Buffer needs to be bigger than 3";
+    }
+    const dataView = new DataView(buffer);
+    const byteWidth = dataView.getUint8(len - 1);
+    const packedType = dataView.getUint8(len - 2);
+    const parentWidth = fromByteWidth(byteWidth);
+    const offset = len - byteWidth - 2;
+    return new Reference(dataView, offset, parentWidth, packedType, "/");
+}
+export class Reference {
+    constructor(dataView, offset, parentWidth, packedType, path) {
+        this.dataView = dataView;
+        this.offset = offset;
+        this.parentWidth = parentWidth;
+        this.packedType = packedType;
+        this.path = path;
+        this._length = -1;
+        this.byteWidth = 1 << (packedType & 3);
+        this.valueType = packedType >> 2;
+    }
+    isNull() { return this.valueType === ValueType.NULL; }
+    isNumber() { return isNumber(this.valueType) || isIndirectNumber(this.valueType); }
+    isFloat() { return ValueType.FLOAT === this.valueType || ValueType.INDIRECT_FLOAT === this.valueType; }
+    isInt() { return this.isNumber() && !this.isFloat(); }
+    isString() { return ValueType.STRING === this.valueType || ValueType.KEY === this.valueType; }
+    isBool() { return ValueType.BOOL === this.valueType; }
+    isBlob() { return ValueType.BLOB === this.valueType; }
+    isVector() { return isAVector(this.valueType); }
+    isMap() { return ValueType.MAP === this.valueType; }
+    boolValue() {
+        if (this.isBool()) {
+            return readInt(this.dataView, this.offset, this.parentWidth) > 0;
+        }
+        return null;
+    }
+    intValue() {
+        if (this.valueType === ValueType.INT) {
+            return readInt(this.dataView, this.offset, this.parentWidth);
+        }
+        if (this.valueType === ValueType.UINT) {
+            return readUInt(this.dataView, this.offset, this.parentWidth);
+        }
+        if (this.valueType === ValueType.INDIRECT_INT) {
+            return readInt(this.dataView, indirect(this.dataView, this.offset, this.parentWidth), fromByteWidth(this.byteWidth));
+        }
+        if (this.valueType === ValueType.INDIRECT_UINT) {
+            return readUInt(this.dataView, indirect(this.dataView, this.offset, this.parentWidth), fromByteWidth(this.byteWidth));
+        }
+        return null;
+    }
+    floatValue() {
+        if (this.valueType === ValueType.FLOAT) {
+            return readFloat(this.dataView, this.offset, this.parentWidth);
+        }
+        if (this.valueType === ValueType.INDIRECT_FLOAT) {
+            return readFloat(this.dataView, indirect(this.dataView, this.offset, this.parentWidth), fromByteWidth(this.byteWidth));
+        }
+        return null;
+    }
+    numericValue() { return this.floatValue() || this.intValue(); }
+    stringValue() {
+        if (this.valueType === ValueType.STRING || this.valueType === ValueType.KEY) {
+            const begin = indirect(this.dataView, this.offset, this.parentWidth);
+            return fromUTF8Array(new Uint8Array(this.dataView.buffer, begin, this.length()));
+        }
+        return null;
+    }
+    blobValue() {
+        if (this.isBlob()) {
+            const begin = indirect(this.dataView, this.offset, this.parentWidth);
+            return new Uint8Array(this.dataView.buffer, begin, this.length());
+        }
+        return null;
+    }
+    get(key) {
+        const length = this.length();
+        if (Number.isInteger(key) && isAVector(this.valueType)) {
+            if (key >= length || key < 0) {
+                throw `Key: [${key}] is not applicable on ${this.path} of ${this.valueType} length: ${length}`;
+            }
+            const _indirect = indirect(this.dataView, this.offset, this.parentWidth);
+            const elementOffset = _indirect + key * this.byteWidth;
+            let _packedType = this.dataView.getUint8(_indirect + length * this.byteWidth + key);
+            if (isTypedVector(this.valueType)) {
+                const _valueType = typedVectorElementType(this.valueType);
+                _packedType = packedType(_valueType, BitWidth.WIDTH8);
+            }
+            else if (isFixedTypedVector(this.valueType)) {
+                const _valueType = fixedTypedVectorElementType(this.valueType);
+                _packedType = packedType(_valueType, BitWidth.WIDTH8);
+            }
+            return new Reference(this.dataView, elementOffset, fromByteWidth(this.byteWidth), _packedType, `${this.path}[${key}]`);
+        }
+        if (typeof key === 'string') {
+            const index = keyIndex(key, this.dataView, this.offset, this.parentWidth, this.byteWidth, length);
+            if (index !== null) {
+                return valueForIndexWithKey(index, key, this.dataView, this.offset, this.parentWidth, this.byteWidth, length, this.path);
+            }
+        }
+        throw `Key [${key}] is not applicable on ${this.path} of ${this.valueType}`;
+    }
+    length() {
+        let size;
+        if (this._length > -1) {
+            return this._length;
+        }
+        if (isFixedTypedVector(this.valueType)) {
+            this._length = fixedTypedVectorElementSize(this.valueType);
+        }
+        else if (this.valueType === ValueType.BLOB
+            || this.valueType === ValueType.MAP
+            || isAVector(this.valueType)) {
+            this._length = readUInt(this.dataView, indirect(this.dataView, this.offset, this.parentWidth) - this.byteWidth, fromByteWidth(this.byteWidth));
+        }
+        else if (this.valueType === ValueType.NULL) {
+            this._length = 0;
+        }
+        else if (this.valueType === ValueType.STRING) {
+            const _indirect = indirect(this.dataView, this.offset, this.parentWidth);
+            let sizeByteWidth = this.byteWidth;
+            size = readUInt(this.dataView, _indirect - sizeByteWidth, fromByteWidth(this.byteWidth));
+            while (this.dataView.getInt8(_indirect + size) !== 0) {
+                sizeByteWidth <<= 1;
+                size = readUInt(this.dataView, _indirect - sizeByteWidth, fromByteWidth(this.byteWidth));
+            }
+            this._length = size;
+        }
+        else if (this.valueType === ValueType.KEY) {
+            const _indirect = indirect(this.dataView, this.offset, this.parentWidth);
+            size = 1;
+            while (this.dataView.getInt8(_indirect + size) !== 0) {
+                size++;
+            }
+            this._length = size;
+        }
+        else {
+            this._length = 1;
+        }
+        return this._length;
+    }
+    toObject() {
+        const length = this.length();
+        if (this.isVector()) {
+            const result = [];
+            for (let i = 0; i < length; i++) {
+                result.push(this.get(i).toObject());
+            }
+            return result;
+        }
+        if (this.isMap()) {
+            const result = {};
+            for (let i = 0; i < length; i++) {
+                const key = keyForIndex(i, this.dataView, this.offset, this.parentWidth, this.byteWidth);
+                result[key] = valueForIndexWithKey(i, key, this.dataView, this.offset, this.parentWidth, this.byteWidth, length, this.path).toObject();
+            }
+            return result;
+        }
+        if (this.isNull()) {
+            return null;
+        }
+        if (this.isBool()) {
+            return this.boolValue();
+        }
+        if (this.isNumber()) {
+            return this.numericValue();
+        }
+        return this.blobValue() || this.stringValue();
+    }
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/stack-value.d.ts b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/stack-value.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..3c18a9d4c9741e833e919f2fd9d2bd1f8d56eb13
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/stack-value.d.ts
@@ -0,0 +1,16 @@
+import { Builder } from './builder';
+import { BitWidth } from './bit-width';
+import { ValueType } from './value-type';
+export declare class StackValue {
+    private builder;
+    type: ValueType;
+    width: number;
+    value: number | boolean | null;
+    offset: number;
+    constructor(builder: Builder, type: ValueType, width: number, value?: number | boolean | null, offset?: number);
+    elementWidth(size: number, index: number): BitWidth;
+    writeToBuffer(byteWidth: number): void;
+    storedWidth(width?: BitWidth): BitWidth;
+    storedPackedType(width?: BitWidth): ValueType;
+    isOffset(): boolean;
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/stack-value.js b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/stack-value.js
new file mode 100644
index 0000000000000000000000000000000000000000..917542a895c5eecd0d52031cdba0ce305958c435
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/stack-value.js
@@ -0,0 +1,65 @@
+import { BitWidth } from './bit-width';
+import { paddingSize, uwidth, fromByteWidth } from './bit-width-util';
+import { ValueType } from './value-type';
+import { isInline, packedType } from './value-type-util';
+export class StackValue {
+    constructor(builder, type, width, value = null, offset = 0) {
+        this.builder = builder;
+        this.type = type;
+        this.width = width;
+        this.value = value;
+        this.offset = offset;
+    }
+    elementWidth(size, index) {
+        if (isInline(this.type))
+            return this.width;
+        for (let i = 0; i < 4; i++) {
+            const width = 1 << i;
+            const offsetLoc = size + paddingSize(size, width) + index * width;
+            const offset = offsetLoc - this.offset;
+            const bitWidth = uwidth(offset);
+            if (1 << bitWidth === width) {
+                return bitWidth;
+            }
+        }
+        throw `Element is unknown. Size: ${size} at index: ${index}. This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new`;
+    }
+    writeToBuffer(byteWidth) {
+        const newOffset = this.builder.computeOffset(byteWidth);
+        if (this.type === ValueType.FLOAT) {
+            if (this.width === BitWidth.WIDTH32) {
+                this.builder.view.setFloat32(this.builder.offset, this.value, true);
+            }
+            else {
+                this.builder.view.setFloat64(this.builder.offset, this.value, true);
+            }
+        }
+        else if (this.type === ValueType.INT) {
+            const bitWidth = fromByteWidth(byteWidth);
+            this.builder.pushInt(this.value, bitWidth);
+        }
+        else if (this.type === ValueType.UINT) {
+            const bitWidth = fromByteWidth(byteWidth);
+            this.builder.pushUInt(this.value, bitWidth);
+        }
+        else if (this.type === ValueType.NULL) {
+            this.builder.pushInt(0, this.width);
+        }
+        else if (this.type === ValueType.BOOL) {
+            this.builder.pushInt(this.value ? 1 : 0, this.width);
+        }
+        else {
+            throw `Unexpected type: ${this.type}. This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new`;
+        }
+        this.offset = newOffset;
+    }
+    storedWidth(width = BitWidth.WIDTH8) {
+        return isInline(this.type) ? Math.max(width, this.width) : this.width;
+    }
+    storedPackedType(width = BitWidth.WIDTH8) {
+        return packedType(this.type, this.storedWidth(width));
+    }
+    isOffset() {
+        return !isInline(this.type);
+    }
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/value-type-util.d.ts b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/value-type-util.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e0c0a808e1c52379b0669355f4ec82ea12a41a55
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/value-type-util.d.ts
@@ -0,0 +1,13 @@
+import { ValueType } from './value-type';
+export declare function isInline(value: ValueType): boolean;
+export declare function isNumber(value: ValueType): boolean;
+export declare function isIndirectNumber(value: ValueType): boolean;
+export declare function isTypedVectorElement(value: ValueType): boolean;
+export declare function isTypedVector(value: ValueType): boolean;
+export declare function isFixedTypedVector(value: ValueType): boolean;
+export declare function isAVector(value: ValueType): boolean;
+export declare function toTypedVector(valueType: ValueType, length: number): ValueType;
+export declare function typedVectorElementType(valueType: ValueType): ValueType;
+export declare function fixedTypedVectorElementType(valueType: ValueType): ValueType;
+export declare function fixedTypedVectorElementSize(valueType: ValueType): ValueType;
+export declare function packedType(valueType: ValueType, bitWidth: number): ValueType;
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/value-type-util.js b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/value-type-util.js
new file mode 100644
index 0000000000000000000000000000000000000000..24c4a1654e54d0c531d3584fdfeb6dab79b939ed
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/value-type-util.js
@@ -0,0 +1,56 @@
+import { ValueType } from './value-type';
+export function isInline(value) {
+    return value === ValueType.BOOL
+        || value <= ValueType.FLOAT;
+}
+export function isNumber(value) {
+    return value >= ValueType.INT
+        && value <= ValueType.FLOAT;
+}
+export function isIndirectNumber(value) {
+    return value >= ValueType.INDIRECT_INT
+        && value <= ValueType.INDIRECT_FLOAT;
+}
+export function isTypedVectorElement(value) {
+    return value === ValueType.BOOL
+        || (value >= ValueType.INT
+            && value <= ValueType.STRING);
+}
+export function isTypedVector(value) {
+    return value === ValueType.VECTOR_BOOL
+        || (value >= ValueType.VECTOR_INT
+            && value <= ValueType.VECTOR_STRING_DEPRECATED);
+}
+export function isFixedTypedVector(value) {
+    return value >= ValueType.VECTOR_INT2
+        && value <= ValueType.VECTOR_FLOAT4;
+}
+export function isAVector(value) {
+    return isTypedVector(value)
+        || isFixedTypedVector(value)
+        || value === ValueType.VECTOR;
+}
+export function toTypedVector(valueType, length) {
+    if (length === 0)
+        return valueType - ValueType.INT + ValueType.VECTOR_INT;
+    if (length === 2)
+        return valueType - ValueType.INT + ValueType.VECTOR_INT2;
+    if (length === 3)
+        return valueType - ValueType.INT + ValueType.VECTOR_INT3;
+    if (length === 4)
+        return valueType - ValueType.INT + ValueType.VECTOR_INT4;
+    throw "Unexpected length " + length;
+}
+export function typedVectorElementType(valueType) {
+    return valueType - ValueType.VECTOR_INT + ValueType.INT;
+}
+export function fixedTypedVectorElementType(valueType) {
+    return ((valueType - ValueType.VECTOR_INT2) % 3) + ValueType.INT;
+}
+export function fixedTypedVectorElementSize(valueType) {
+    // The x / y >> 0 trick is to have an int division. Suppose to be faster than Math.floor()
+    return (((valueType - ValueType.VECTOR_INT2) / 3) >> 0) + 2;
+}
+export function packedType(valueType, bitWidth) {
+    return bitWidth | (valueType << 2);
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/value-type.d.ts b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/value-type.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..21d34c06d648b699e208d9be90f02d296830678f
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/value-type.d.ts
@@ -0,0 +1,30 @@
+export declare enum ValueType {
+    NULL = 0,
+    INT = 1,
+    UINT = 2,
+    FLOAT = 3,
+    KEY = 4,
+    STRING = 5,
+    INDIRECT_INT = 6,
+    INDIRECT_UINT = 7,
+    INDIRECT_FLOAT = 8,
+    MAP = 9,
+    VECTOR = 10,
+    VECTOR_INT = 11,
+    VECTOR_UINT = 12,
+    VECTOR_FLOAT = 13,
+    VECTOR_KEY = 14,
+    VECTOR_STRING_DEPRECATED = 15,
+    VECTOR_INT2 = 16,
+    VECTOR_UINT2 = 17,
+    VECTOR_FLOAT2 = 18,
+    VECTOR_INT3 = 19,
+    VECTOR_UINT3 = 20,
+    VECTOR_FLOAT3 = 21,
+    VECTOR_INT4 = 22,
+    VECTOR_UINT4 = 23,
+    VECTOR_FLOAT4 = 24,
+    BLOB = 25,
+    BOOL = 26,
+    VECTOR_BOOL = 36
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/flexbuffers/value-type.js b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/value-type.js
new file mode 100644
index 0000000000000000000000000000000000000000..e0e1cd29540a7f6081f45ac7418a85251259cbae
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/flexbuffers/value-type.js
@@ -0,0 +1,31 @@
+export var ValueType;
+(function (ValueType) {
+    ValueType[ValueType["NULL"] = 0] = "NULL";
+    ValueType[ValueType["INT"] = 1] = "INT";
+    ValueType[ValueType["UINT"] = 2] = "UINT";
+    ValueType[ValueType["FLOAT"] = 3] = "FLOAT";
+    ValueType[ValueType["KEY"] = 4] = "KEY";
+    ValueType[ValueType["STRING"] = 5] = "STRING";
+    ValueType[ValueType["INDIRECT_INT"] = 6] = "INDIRECT_INT";
+    ValueType[ValueType["INDIRECT_UINT"] = 7] = "INDIRECT_UINT";
+    ValueType[ValueType["INDIRECT_FLOAT"] = 8] = "INDIRECT_FLOAT";
+    ValueType[ValueType["MAP"] = 9] = "MAP";
+    ValueType[ValueType["VECTOR"] = 10] = "VECTOR";
+    ValueType[ValueType["VECTOR_INT"] = 11] = "VECTOR_INT";
+    ValueType[ValueType["VECTOR_UINT"] = 12] = "VECTOR_UINT";
+    ValueType[ValueType["VECTOR_FLOAT"] = 13] = "VECTOR_FLOAT";
+    ValueType[ValueType["VECTOR_KEY"] = 14] = "VECTOR_KEY";
+    ValueType[ValueType["VECTOR_STRING_DEPRECATED"] = 15] = "VECTOR_STRING_DEPRECATED";
+    ValueType[ValueType["VECTOR_INT2"] = 16] = "VECTOR_INT2";
+    ValueType[ValueType["VECTOR_UINT2"] = 17] = "VECTOR_UINT2";
+    ValueType[ValueType["VECTOR_FLOAT2"] = 18] = "VECTOR_FLOAT2";
+    ValueType[ValueType["VECTOR_INT3"] = 19] = "VECTOR_INT3";
+    ValueType[ValueType["VECTOR_UINT3"] = 20] = "VECTOR_UINT3";
+    ValueType[ValueType["VECTOR_FLOAT3"] = 21] = "VECTOR_FLOAT3";
+    ValueType[ValueType["VECTOR_INT4"] = 22] = "VECTOR_INT4";
+    ValueType[ValueType["VECTOR_UINT4"] = 23] = "VECTOR_UINT4";
+    ValueType[ValueType["VECTOR_FLOAT4"] = 24] = "VECTOR_FLOAT4";
+    ValueType[ValueType["BLOB"] = 25] = "BLOB";
+    ValueType[ValueType["BOOL"] = 26] = "BOOL";
+    ValueType[ValueType["VECTOR_BOOL"] = 36] = "VECTOR_BOOL";
+})(ValueType || (ValueType = {}));
diff --git a/igv_component/node_modules/flatbuffers/mjs/long.d.ts b/igv_component/node_modules/flatbuffers/mjs/long.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..8f2897e8b5faee39e55080891949e2dc9a6675bf
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/long.d.ts
@@ -0,0 +1,10 @@
+export declare function createLong(low: number, high: number): Long;
+export declare class Long {
+    static readonly ZERO: Long;
+    low: number;
+    high: number;
+    constructor(low: number, high: number);
+    static create(low: number, high: number): Long;
+    toFloat64(): number;
+    equals(other: Long): boolean;
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/long.js b/igv_component/node_modules/flatbuffers/mjs/long.js
new file mode 100644
index 0000000000000000000000000000000000000000..bb82b691126841245d88fe009842059b6763ccef
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/long.js
@@ -0,0 +1,20 @@
+export function createLong(low, high) {
+    return Long.create(low, high);
+}
+export class Long {
+    constructor(low, high) {
+        this.low = low | 0;
+        this.high = high | 0;
+    }
+    static create(low, high) {
+        // Special-case zero to avoid GC overhead for default values
+        return low == 0 && high == 0 ? Long.ZERO : new Long(low, high);
+    }
+    toFloat64() {
+        return (this.low >>> 0) + this.high * 0x100000000;
+    }
+    equals(other) {
+        return this.low == other.low && this.high == other.high;
+    }
+}
+Long.ZERO = new Long(0, 0);
diff --git a/igv_component/node_modules/flatbuffers/mjs/types.d.ts b/igv_component/node_modules/flatbuffers/mjs/types.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..9c081210ddbacbc0532b3e5dfb0a10f2469125ba
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/types.d.ts
@@ -0,0 +1,11 @@
+import { ByteBuffer } from './byte-buffer';
+import { Builder } from './builder';
+export declare type Offset = number;
+export declare type Table = {
+    bb: ByteBuffer;
+    bb_pos: number;
+};
+export interface IGeneratedObject {
+    pack(builder: Builder): Offset;
+    unpack(): IGeneratedObject;
+}
diff --git a/igv_component/node_modules/flatbuffers/mjs/types.js b/igv_component/node_modules/flatbuffers/mjs/types.js
new file mode 100644
index 0000000000000000000000000000000000000000..cb0ff5c3b541f646105198ee23ac0fc3d805023e
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/types.js
@@ -0,0 +1 @@
+export {};
diff --git a/igv_component/node_modules/flatbuffers/mjs/utils.d.ts b/igv_component/node_modules/flatbuffers/mjs/utils.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..8b1dd9845dca70a34315adf7bcd5eb695a3a1b7a
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/utils.d.ts
@@ -0,0 +1,4 @@
+export declare const int32: Int32Array;
+export declare const float32: Float32Array;
+export declare const float64: Float64Array;
+export declare const isLittleEndian: boolean;
diff --git a/igv_component/node_modules/flatbuffers/mjs/utils.js b/igv_component/node_modules/flatbuffers/mjs/utils.js
new file mode 100644
index 0000000000000000000000000000000000000000..c02573151185f322f75fceb4d539a7012fc549e1
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/mjs/utils.js
@@ -0,0 +1,4 @@
+export const int32 = new Int32Array(2);
+export const float32 = new Float32Array(int32.buffer);
+export const float64 = new Float64Array(int32.buffer);
+export const isLittleEndian = new Uint16Array(new Uint8Array([1, 0]).buffer)[0] === 1;
diff --git a/igv_component/node_modules/flatbuffers/package.json b/igv_component/node_modules/flatbuffers/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..49097874d2d5a9554db11f1374febd0213062be4
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/package.json
@@ -0,0 +1,43 @@
+{
+  "name": "flatbuffers",
+  "version": "2.0.4",
+  "description": "Memory Efficient Serialization Library",
+  "files": [
+    "js/**/*.js",
+    "js/**/*.d.ts",
+    "mjs/**/*.js",
+    "mjs/**/*.d.ts",
+    "ts/**/*.ts"
+  ],
+  "main": "js/flatbuffers.js",
+  "module": "mjs/flatbuffers.js",
+  "directories": {
+    "doc": "docs",
+    "test": "tests"
+  },
+  "scripts": {
+    "test": "npm run compile && cd tests && ./TypeScriptTest.sh",
+    "compile": "tsc && tsc -p tsconfig.mjs.json",
+    "prepublishOnly": "npm install --only=dev && npm run compile"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/google/flatbuffers.git"
+  },
+  "keywords": [
+    "flatbuffers"
+  ],
+  "author": "The FlatBuffers project",
+  "license": "SEE LICENSE IN LICENSE.txt",
+  "bugs": {
+    "url": "https://github.com/google/flatbuffers/issues"
+  },
+  "homepage": "https://google.github.io/flatbuffers/",
+  "dependencies": {},
+  "devDependencies": {
+    "@typescript-eslint/eslint-plugin": "^4.12.0",
+    "@typescript-eslint/parser": "^4.12.0",
+    "eslint": "^7.17.0",
+    "typescript": "^4.1.3"
+  }
+}
diff --git a/igv_component/node_modules/flatbuffers/readme.md b/igv_component/node_modules/flatbuffers/readme.md
new file mode 100644
index 0000000000000000000000000000000000000000..bfd240ff36743093056062427db9c80289a1c3b3
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/readme.md
@@ -0,0 +1,62 @@
+![logo](http://google.github.io/flatbuffers/fpl_logo_small.png) FlatBuffers
+===========
+
+[![Build Status](https://travis-ci.org/google/flatbuffers.svg?branch=master)](https://travis-ci.org/google/flatbuffers)
+[![Build status](https://ci.appveyor.com/api/projects/status/yg5idd2fnusv1n10?svg=true)](https://ci.appveyor.com/project/gwvo/flatbuffers)
+[![Join the chat at https://gitter.im/google/flatbuffers](https://badges.gitter.im/google/flatbuffers.svg)](https://gitter.im/google/flatbuffers?utm_source=badge&utm_medium=badge&utm_campaign=pr-badge&utm_content=badge)
+[![Discord Chat](https://img.shields.io/discord/656202785926152206.svg)](https:///discord.gg/6qgKs3R)
+[![Twitter Follow](https://img.shields.io/twitter/follow/wvo.svg?style=social)](https://twitter.com/wvo)
+
+
+**FlatBuffers** is a cross platform serialization library architected for
+maximum memory efficiency. It allows you to directly access serialized data without parsing/unpacking it first, while still having great forwards/backwards compatibility.
+
+**Go to our [landing page][] to browse our documentation.**
+
+## Supported operating systems
+* Windows
+* MacOS X
+* Linux
+* Android
+* And any others with a recent C++ compiler.
+
+## Supported programming languages
+* C++
+* C#
+* C
+* Dart
+* Go
+* Java
+* JavaScript
+* Lobster
+* Lua
+* PHP
+* Python
+* Rust
+* TypeScript
+
+*and more in progress...*
+
+## Contribution
+* [FlatBuffers Google Group][] to discuss FlatBuffers with other developers and users.
+* [FlatBuffers Issues Tracker][] to submit an issue.
+* [stackoverflow.com][] with [`flatbuffers` tag][] for any questions regarding FlatBuffers.
+
+*To contribute to this project,* see [CONTRIBUTING][].
+
+## Security
+
+Please see our [Security Policy](SECURITY.md) for reporting vulnerabilities.
+
+## Licensing
+*Flatbuffers* is licensed under the Apache License, Version 2.0. See [LICENSE][] for the full license text.
+
+<br>
+
+   [CONTRIBUTING]: http://github.com/google/flatbuffers/blob/master/CONTRIBUTING.md
+   [`flatbuffers` tag]: https://stackoverflow.com/questions/tagged/flatbuffers
+   [FlatBuffers Google Group]: https://groups.google.com/forum/#!forum/flatbuffers
+   [FlatBuffers Issues Tracker]: http://github.com/google/flatbuffers/issues
+   [stackoverflow.com]: http://stackoverflow.com/search?q=flatbuffers
+   [landing page]: https://google.github.io/flatbuffers
+   [LICENSE]: https://github.com/google/flatbuffers/blob/master/LICENSE.txt
diff --git a/igv_component/node_modules/flatbuffers/ts/builder.ts b/igv_component/node_modules/flatbuffers/ts/builder.ts
new file mode 100644
index 0000000000000000000000000000000000000000..7aad15e235d7333f8b44e43acc20d328c3d497cb
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/builder.ts
@@ -0,0 +1,628 @@
+import { ByteBuffer } from "./byte-buffer"
+import { SIZEOF_SHORT, SIZE_PREFIX_LENGTH, SIZEOF_INT, FILE_IDENTIFIER_LENGTH } from "./constants"
+import { Offset, IGeneratedObject } from "./types"
+import { Long } from "./long"
+
+export class Builder {
+    private bb: ByteBuffer
+    /** Remaining space in the ByteBuffer. */
+    private space: number
+    /** Minimum alignment encountered so far. */
+    private minalign = 1
+    /** The vtable for the current table. */
+    private vtable: number[] | null = null
+    /** The amount of fields we're actually using. */
+    private vtable_in_use = 0
+    /** Whether we are currently serializing a table. */
+    private isNested = false;
+    /** Starting offset of the current struct/table. */
+    private object_start = 0
+    /** List of offsets of all vtables. */
+    private vtables: number[] = []
+    /** For the current vector being built. */
+    private vector_num_elems = 0 
+    /** False omits default values from the serialized data */
+    private force_defaults = false;
+    
+    private string_maps: Map<string | Uint8Array, number> | null = null;
+  
+    /**
+     * Create a FlatBufferBuilder.
+     */
+    constructor(opt_initial_size?: number) {
+      let initial_size: number;
+  
+      if (!opt_initial_size) {
+        initial_size = 1024;
+      } else {
+        initial_size = opt_initial_size;
+      }
+  
+      /**
+       * @type {ByteBuffer}
+       * @private
+       */
+      this.bb = ByteBuffer.allocate(initial_size);
+      this.space = initial_size;
+    }
+  
+  
+    clear(): void {
+      this.bb.clear();
+      this.space = this.bb.capacity();
+      this.minalign = 1;
+      this.vtable = null;
+      this.vtable_in_use = 0;
+      this.isNested = false;
+      this.object_start = 0;
+      this.vtables = [];
+      this.vector_num_elems = 0;
+      this.force_defaults = false;
+      this.string_maps = null;
+    }
+  
+    /**
+     * In order to save space, fields that are set to their default value
+     * don't get serialized into the buffer. Forcing defaults provides a
+     * way to manually disable this optimization.
+     *
+     * @param forceDefaults true always serializes default values
+     */
+    forceDefaults(forceDefaults: boolean): void {
+      this.force_defaults = forceDefaults;
+    }
+  
+    /**
+     * Get the ByteBuffer representing the FlatBuffer. Only call this after you've
+     * called finish(). The actual data starts at the ByteBuffer's current position,
+     * not necessarily at 0.
+     */
+    dataBuffer(): ByteBuffer {
+      return this.bb;
+    }
+  
+    /**
+     * Get the bytes representing the FlatBuffer. Only call this after you've
+     * called finish().
+     */
+    asUint8Array(): Uint8Array {
+      return this.bb.bytes().subarray(this.bb.position(), this.bb.position() + this.offset());
+    }
+  
+    /**
+     * Prepare to write an element of `size` after `additional_bytes` have been
+     * written, e.g. if you write a string, you need to align such the int length
+     * field is aligned to 4 bytes, and the string data follows it directly. If all
+     * you need to do is alignment, `additional_bytes` will be 0.
+     *
+     * @param size This is the of the new element to write
+     * @param additional_bytes The padding size
+     */
+    prep(size: number, additional_bytes: number): void {
+      // Track the biggest thing we've ever aligned to.
+      if (size > this.minalign) {
+        this.minalign = size;
+      }
+  
+      // Find the amount of alignment needed such that `size` is properly
+      // aligned after `additional_bytes`
+      const align_size = ((~(this.bb.capacity() - this.space + additional_bytes)) + 1) & (size - 1);
+  
+      // Reallocate the buffer if needed.
+      while (this.space < align_size + size + additional_bytes) {
+        const old_buf_size = this.bb.capacity();
+        this.bb = Builder.growByteBuffer(this.bb);
+        this.space += this.bb.capacity() - old_buf_size;
+      }
+  
+      this.pad(align_size);
+    }
+  
+    pad(byte_size: number): void {
+      for (let i = 0; i < byte_size; i++) {
+        this.bb.writeInt8(--this.space, 0);
+      }
+    }
+  
+    writeInt8(value: number): void {
+      this.bb.writeInt8(this.space -= 1, value);
+    }
+  
+    writeInt16(value: number): void {
+      this.bb.writeInt16(this.space -= 2, value);
+    }
+  
+    writeInt32(value: number): void {
+      this.bb.writeInt32(this.space -= 4, value);
+    }
+  
+    writeInt64(value: Long): void {
+      this.bb.writeInt64(this.space -= 8, value);
+    }
+  
+    writeFloat32(value: number): void {
+      this.bb.writeFloat32(this.space -= 4, value);
+    }
+  
+    writeFloat64(value: number): void {
+      this.bb.writeFloat64(this.space -= 8, value);
+    }
+  
+    /**
+     * Add an `int8` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int8` to add the the buffer.
+     */
+    addInt8(value: number): void {
+      this.prep(1, 0);
+      this.writeInt8(value);
+    }
+  
+    /**
+     * Add an `int16` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int16` to add the the buffer.
+     */
+    addInt16(value: number): void {
+      this.prep(2, 0);
+      this.writeInt16(value);
+    }
+  
+    /**
+     * Add an `int32` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int32` to add the the buffer.
+     */
+    addInt32(value: number): void {
+      this.prep(4, 0);
+      this.writeInt32(value);
+    }
+  
+    /**
+     * Add an `int64` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `int64` to add the the buffer.
+     */
+    addInt64(value: Long): void {
+      this.prep(8, 0);
+      this.writeInt64(value);
+    }
+  
+    /**
+     * Add a `float32` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `float32` to add the the buffer.
+     */
+    addFloat32(value: number): void {
+      this.prep(4, 0);
+      this.writeFloat32(value);
+    }
+  
+    /**
+     * Add a `float64` to the buffer, properly aligned, and grows the buffer (if necessary).
+     * @param value The `float64` to add the the buffer.
+     */
+    addFloat64(value: number): void {
+      this.prep(8, 0);
+      this.writeFloat64(value);
+    }
+  
+    addFieldInt8(voffset: number, value: number, defaultValue: number): void {
+      if (this.force_defaults || value != defaultValue) {
+        this.addInt8(value);
+        this.slot(voffset);
+      }
+    }
+  
+    addFieldInt16(voffset: number, value: number, defaultValue: number): void {
+      if (this.force_defaults || value != defaultValue) {
+        this.addInt16(value);
+        this.slot(voffset);
+      }
+    }
+  
+    addFieldInt32(voffset: number, value: number, defaultValue: number): void {
+      if (this.force_defaults || value != defaultValue) {
+        this.addInt32(value);
+        this.slot(voffset);
+      }
+    }
+  
+    addFieldInt64(voffset: number, value: Long, defaultValue: Long): void {
+      if (this.force_defaults || !value.equals(defaultValue)) {
+        this.addInt64(value);
+        this.slot(voffset);
+      }
+    }
+  
+    addFieldFloat32(voffset: number, value: number, defaultValue: number): void {
+      if (this.force_defaults || value != defaultValue) {
+        this.addFloat32(value);
+        this.slot(voffset);
+      }
+    }
+  
+    addFieldFloat64(voffset: number, value: number, defaultValue: number): void {
+      if (this.force_defaults || value != defaultValue) {
+        this.addFloat64(value);
+        this.slot(voffset);
+      }
+    }
+  
+    addFieldOffset(voffset: number, value: Offset, defaultValue: Offset): void {
+      if (this.force_defaults || value != defaultValue) {
+        this.addOffset(value);
+        this.slot(voffset);
+      }
+    }
+  
+    /**
+     * Structs are stored inline, so nothing additional is being added. `d` is always 0.
+     */
+    addFieldStruct(voffset: number, value: Offset, defaultValue: Offset): void {
+      if (value != defaultValue) {
+        this.nested(value);
+        this.slot(voffset);
+      }
+    }
+  
+    /**
+     * Structures are always stored inline, they need to be created right
+     * where they're used.  You'll get this assertion failure if you
+     * created it elsewhere.
+     */
+    nested(obj: Offset): void {
+      if (obj != this.offset()) {
+        throw new Error('FlatBuffers: struct must be serialized inline.');
+      }
+    }
+  
+    /**
+     * Should not be creating any other object, string or vector
+     * while an object is being constructed
+     */
+    notNested(): void {
+      if (this.isNested) {
+        throw new Error('FlatBuffers: object serialization must not be nested.');
+      }
+    }
+  
+    /**
+     * Set the current vtable at `voffset` to the current location in the buffer.
+     */
+    slot(voffset: number): void {
+      if (this.vtable !== null)
+        this.vtable[voffset] = this.offset();
+    }
+  
+    /**
+     * @returns Offset relative to the end of the buffer.
+     */
+    offset(): Offset {
+      return this.bb.capacity() - this.space;
+    }
+  
+    /**
+     * Doubles the size of the backing ByteBuffer and copies the old data towards
+     * the end of the new buffer (since we build the buffer backwards).
+     *
+     * @param bb The current buffer with the existing data
+     * @returns A new byte buffer with the old data copied
+     * to it. The data is located at the end of the buffer.
+     *
+     * uint8Array.set() formally takes {Array<number>|ArrayBufferView}, so to pass
+     * it a uint8Array we need to suppress the type check:
+     * @suppress {checkTypes}
+     */
+    static growByteBuffer(bb: ByteBuffer): ByteBuffer {
+      const old_buf_size = bb.capacity();
+  
+      // Ensure we don't grow beyond what fits in an int.
+      if (old_buf_size & 0xC0000000) {
+        throw new Error('FlatBuffers: cannot grow buffer beyond 2 gigabytes.');
+      }
+  
+      const new_buf_size = old_buf_size << 1;
+      const nbb = ByteBuffer.allocate(new_buf_size);
+      nbb.setPosition(new_buf_size - old_buf_size);
+      nbb.bytes().set(bb.bytes(), new_buf_size - old_buf_size);
+      return nbb;
+    }
+  
+    /**
+     * Adds on offset, relative to where it will be written.
+     *
+     * @param offset The offset to add.
+     */
+    addOffset(offset: Offset): void {
+      this.prep(SIZEOF_INT, 0); // Ensure alignment is already done.
+      this.writeInt32(this.offset() - offset + SIZEOF_INT);
+    }
+  
+    /**
+     * Start encoding a new object in the buffer.  Users will not usually need to
+     * call this directly. The FlatBuffers compiler will generate helper methods
+     * that call this method internally.
+     */
+    startObject(numfields: number): void {
+      this.notNested();
+      if (this.vtable == null) {
+        this.vtable = [];
+      }
+      this.vtable_in_use = numfields;
+      for (let i = 0; i < numfields; i++) {
+        this.vtable[i] = 0; // This will push additional elements as needed
+      }
+      this.isNested = true;
+      this.object_start = this.offset();
+    }
+  
+    /**
+     * Finish off writing the object that is under construction.
+     *
+     * @returns The offset to the object inside `dataBuffer`
+     */
+    endObject(): Offset {
+      if (this.vtable == null || !this.isNested) {
+        throw new Error('FlatBuffers: endObject called without startObject');
+      }
+  
+      this.addInt32(0);
+      const vtableloc = this.offset();
+  
+      // Trim trailing zeroes.
+      let i = this.vtable_in_use - 1;
+      // eslint-disable-next-line no-empty
+      for (; i >= 0 && this.vtable[i] == 0; i--) {}
+      const trimmed_size = i + 1;
+  
+      // Write out the current vtable.
+      for (; i >= 0; i--) {
+        // Offset relative to the start of the table.
+        this.addInt16(this.vtable[i] != 0 ? vtableloc - this.vtable[i] : 0);
+      }
+  
+      const standard_fields = 2; // The fields below:
+      this.addInt16(vtableloc - this.object_start);
+      const len = (trimmed_size + standard_fields) * SIZEOF_SHORT;
+      this.addInt16(len);
+  
+      // Search for an existing vtable that matches the current one.
+      let existing_vtable = 0;
+      const vt1 = this.space;
+    outer_loop:
+      for (i = 0; i < this.vtables.length; i++) {
+        const vt2 = this.bb.capacity() - this.vtables[i];
+        if (len == this.bb.readInt16(vt2)) {
+          for (let j = SIZEOF_SHORT; j < len; j += SIZEOF_SHORT) {
+            if (this.bb.readInt16(vt1 + j) != this.bb.readInt16(vt2 + j)) {
+              continue outer_loop;
+            }
+          }
+          existing_vtable = this.vtables[i];
+          break;
+        }
+      }
+  
+      if (existing_vtable) {
+        // Found a match:
+        // Remove the current vtable.
+        this.space = this.bb.capacity() - vtableloc;
+  
+        // Point table to existing vtable.
+        this.bb.writeInt32(this.space, existing_vtable - vtableloc);
+      } else {
+        // No match:
+        // Add the location of the current vtable to the list of vtables.
+        this.vtables.push(this.offset());
+  
+        // Point table to current vtable.
+        this.bb.writeInt32(this.bb.capacity() - vtableloc, this.offset() - vtableloc);
+      }
+  
+      this.isNested = false;
+      return vtableloc as Offset;
+    }
+  
+    /**
+     * Finalize a buffer, poiting to the given `root_table`.
+     */
+    finish(root_table: Offset, opt_file_identifier?: string, opt_size_prefix?: boolean): void {
+      const size_prefix = opt_size_prefix ? SIZE_PREFIX_LENGTH : 0;
+      if (opt_file_identifier) {
+        const file_identifier = opt_file_identifier;
+        this.prep(this.minalign, SIZEOF_INT +
+          FILE_IDENTIFIER_LENGTH + size_prefix);
+        if (file_identifier.length != FILE_IDENTIFIER_LENGTH) {
+          throw new Error('FlatBuffers: file identifier must be length ' +
+            FILE_IDENTIFIER_LENGTH);
+        }
+        for (let i = FILE_IDENTIFIER_LENGTH - 1; i >= 0; i--) {
+          this.writeInt8(file_identifier.charCodeAt(i));
+        }
+      }
+      this.prep(this.minalign, SIZEOF_INT + size_prefix);
+      this.addOffset(root_table);
+      if (size_prefix) {
+        this.addInt32(this.bb.capacity() - this.space);
+      }
+      this.bb.setPosition(this.space);
+    }
+  
+    /**
+     * Finalize a size prefixed buffer, pointing to the given `root_table`.
+     */
+    finishSizePrefixed(this: Builder, root_table: Offset, opt_file_identifier?: string): void {
+      this.finish(root_table, opt_file_identifier, true);
+    }
+  
+    /**
+     * This checks a required field has been set in a given table that has
+     * just been constructed.
+     */
+    requiredField(table: Offset, field: number): void {
+      const table_start = this.bb.capacity() - table;
+      const vtable_start = table_start - this.bb.readInt32(table_start);
+      const ok = this.bb.readInt16(vtable_start + field) != 0;
+  
+      // If this fails, the caller will show what field needs to be set.
+      if (!ok) {
+        throw new Error('FlatBuffers: field ' + field + ' must be set');
+      }
+    }
+  
+    /**
+     * Start a new array/vector of objects.  Users usually will not call
+     * this directly. The FlatBuffers compiler will create a start/end
+     * method for vector types in generated code.
+     *
+     * @param elem_size The size of each element in the array
+     * @param num_elems The number of elements in the array
+     * @param alignment The alignment of the array
+     */
+    startVector(elem_size: number, num_elems: number, alignment: number): void {
+      this.notNested();
+      this.vector_num_elems = num_elems;
+      this.prep(SIZEOF_INT, elem_size * num_elems);
+      this.prep(alignment, elem_size * num_elems); // Just in case alignment > int.
+    }
+  
+    /**
+     * Finish off the creation of an array and all its elements. The array must be
+     * created with `startVector`.
+     *
+     * @returns The offset at which the newly created array
+     * starts.
+     */
+    endVector(): Offset {
+      this.writeInt32(this.vector_num_elems);
+      return this.offset();
+    }
+  
+    /**
+     * Encode the string `s` in the buffer using UTF-8. If the string passed has 
+     * already been seen, we return the offset of the already written string
+     *
+     * @param s The string to encode
+     * @return The offset in the buffer where the encoded string starts
+     */
+    createSharedString(s: string | Uint8Array): Offset {
+      if (!s) { return 0 }
+  
+      if (!this.string_maps) {
+        this.string_maps = new Map();
+      }
+  
+      if (this.string_maps.has(s)) {
+        return this.string_maps.get(s) as Offset
+      }
+      const offset = this.createString(s)
+      this.string_maps.set(s, offset)
+      return offset
+    }
+  
+    /**
+     * Encode the string `s` in the buffer using UTF-8. If a Uint8Array is passed
+     * instead of a string, it is assumed to contain valid UTF-8 encoded data.
+     *
+     * @param s The string to encode
+     * @return The offset in the buffer where the encoded string starts
+     */
+    createString(s: string | Uint8Array): Offset {
+      if (!s) { return 0 }
+      let utf8: string | Uint8Array | number[];
+      if (s instanceof Uint8Array) {
+        utf8 = s;
+      } else {
+        utf8 = [];
+        let i = 0;
+  
+        while (i < s.length) {
+          let codePoint;
+  
+          // Decode UTF-16
+          const a = s.charCodeAt(i++);
+          if (a < 0xD800 || a >= 0xDC00) {
+            codePoint = a;
+          } else {
+            const b = s.charCodeAt(i++);
+            codePoint = (a << 10) + b + (0x10000 - (0xD800 << 10) - 0xDC00);
+          }
+  
+          // Encode UTF-8
+          if (codePoint < 0x80) {
+            utf8.push(codePoint);
+          } else {
+            if (codePoint < 0x800) {
+              utf8.push(((codePoint >> 6) & 0x1F) | 0xC0);
+            } else {
+              if (codePoint < 0x10000) {
+                utf8.push(((codePoint >> 12) & 0x0F) | 0xE0);
+              } else {
+                utf8.push(
+                  ((codePoint >> 18) & 0x07) | 0xF0,
+                  ((codePoint >> 12) & 0x3F) | 0x80);
+              }
+              utf8.push(((codePoint >> 6) & 0x3F) | 0x80);
+            }
+            utf8.push((codePoint & 0x3F) | 0x80);
+          }
+        }
+      }
+  
+      this.addInt8(0);
+      this.startVector(1, utf8.length, 1);
+      this.bb.setPosition(this.space -= utf8.length);
+      for (let i = 0, offset = this.space, bytes = this.bb.bytes(); i < utf8.length; i++) {
+        bytes[offset++] = utf8[i];
+      }
+      return this.endVector();
+    }
+  
+    /**
+     * A helper function to avoid generated code depending on this file directly.
+     */
+    createLong(low: number, high: number): Long {
+      return Long.create(low, high);
+    }
+  
+    /**
+     * A helper function to pack an object
+     * 
+     * @returns offset of obj
+     */
+    createObjectOffset(obj: string | any): Offset {
+      if(obj === null) {
+        return 0
+      }
+  
+      if(typeof obj === 'string') {
+        return this.createString(obj);
+      } else {
+        return obj.pack(this);
+      }
+    }
+  
+    /**
+     * A helper function to pack a list of object
+     * 
+     * @returns list of offsets of each non null object
+     */
+    createObjectOffsetList(list: string[] | any[]): Offset[] {
+      const ret: number[] = [];
+  
+      for(let i = 0; i < list.length; ++i) {
+        const val = list[i];
+  
+        if(val !== null) {
+          ret.push(this.createObjectOffset(val));
+        } else {
+          throw new Error(
+            'FlatBuffers: Argument for createObjectOffsetList cannot contain null.'); 
+        }
+      }
+      
+      return ret;
+    }
+  
+    createStructOffsetList(list: string[] | any[], startFunc: (builder: Builder, length: number) => void): Offset {
+      startFunc(this, list.length);
+      this.createObjectOffsetList(list);
+      return this.endVector();
+    }
+  }
diff --git a/igv_component/node_modules/flatbuffers/ts/byte-buffer.ts b/igv_component/node_modules/flatbuffers/ts/byte-buffer.ts
new file mode 100644
index 0000000000000000000000000000000000000000..f802548a9f30affe85666e0d82c83321803ccfc5
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/byte-buffer.ts
@@ -0,0 +1,344 @@
+import { FILE_IDENTIFIER_LENGTH, SIZEOF_INT } from "./constants";
+import { Long } from "./long";
+import { int32, isLittleEndian, float32, float64 } from "./utils";
+import { Offset, Table, IGeneratedObject } from "./types";
+import { Encoding } from "./encoding";
+
+export class ByteBuffer {
+    private position_ = 0;
+  
+    /**
+     * Create a new ByteBuffer with a given array of bytes (`Uint8Array`)
+     */
+    constructor(private bytes_: Uint8Array) { }
+  
+    /**
+     * Create and allocate a new ByteBuffer with a given size.
+     */
+    static allocate(byte_size: number): ByteBuffer {
+      return new ByteBuffer(new Uint8Array(byte_size));
+    }
+  
+    clear(): void {
+      this.position_ = 0;
+    }
+  
+    /**
+     * Get the underlying `Uint8Array`.
+     */
+    bytes(): Uint8Array {
+      return this.bytes_;
+    }
+  
+    /**
+     * Get the buffer's position.
+     */
+    position(): number {
+      return this.position_;
+    }
+  
+    /**
+     * Set the buffer's position.
+     */
+    setPosition(position: number): void {
+      this.position_ = position;
+    }
+  
+    /**
+     * Get the buffer's capacity.
+     */
+    capacity(): number {
+      return this.bytes_.length;
+    }
+  
+    readInt8(offset: number): number {
+      return this.readUint8(offset) << 24 >> 24;
+    }
+  
+    readUint8(offset: number): number {
+      return this.bytes_[offset];
+    }
+  
+    readInt16(offset: number): number {
+      return this.readUint16(offset) << 16 >> 16;
+    }
+  
+    readUint16(offset: number): number {
+      return this.bytes_[offset] | this.bytes_[offset + 1] << 8;
+    }
+  
+    readInt32(offset: number): number {
+      return this.bytes_[offset] | this.bytes_[offset + 1] << 8 | this.bytes_[offset + 2] << 16 | this.bytes_[offset + 3] << 24;
+    }
+  
+    readUint32(offset: number): number {
+      return this.readInt32(offset) >>> 0;
+    }
+  
+    readInt64(offset: number): Long {
+      return new Long(this.readInt32(offset), this.readInt32(offset + 4));
+    }
+  
+    readUint64(offset: number): Long {
+      return new Long(this.readUint32(offset), this.readUint32(offset + 4));
+    }
+  
+    readFloat32(offset: number): number {
+      int32[0] = this.readInt32(offset);
+      return float32[0];
+    }
+  
+    readFloat64(offset: number): number {
+      int32[isLittleEndian ? 0 : 1] = this.readInt32(offset);
+      int32[isLittleEndian ? 1 : 0] = this.readInt32(offset + 4);
+      return float64[0];
+    }
+  
+    writeInt8(offset: number, value: number): void {
+      this.bytes_[offset] = value;
+    }
+  
+    writeUint8(offset: number, value: number): void {
+      this.bytes_[offset] = value;
+    }
+  
+    writeInt16(offset: number, value: number): void {
+      this.bytes_[offset] = value;
+      this.bytes_[offset + 1] = value >> 8;
+    }
+  
+    writeUint16(offset: number, value: number): void {
+        this.bytes_[offset] = value;
+        this.bytes_[offset + 1] = value >> 8;
+    }
+  
+    writeInt32(offset: number, value: number): void {
+      this.bytes_[offset] = value;
+      this.bytes_[offset + 1] = value >> 8;
+      this.bytes_[offset + 2] = value >> 16;
+      this.bytes_[offset + 3] = value >> 24;
+    }
+  
+    writeUint32(offset: number, value: number): void {
+        this.bytes_[offset] = value;
+        this.bytes_[offset + 1] = value >> 8;
+        this.bytes_[offset + 2] = value >> 16;
+        this.bytes_[offset + 3] = value >> 24;
+    }
+  
+    writeInt64(offset: number, value: Long): void {
+      this.writeInt32(offset, value.low);
+      this.writeInt32(offset + 4, value.high);
+    }
+  
+    writeUint64(offset: number, value: Long): void {
+        this.writeUint32(offset, value.low);
+        this.writeUint32(offset + 4, value.high);
+    }
+  
+    writeFloat32(offset: number, value: number): void {
+      float32[0] = value;
+      this.writeInt32(offset, int32[0]);
+    }
+  
+    writeFloat64(offset: number, value: number): void {
+      float64[0] = value;
+      this.writeInt32(offset, int32[isLittleEndian ? 0 : 1]);
+      this.writeInt32(offset + 4, int32[isLittleEndian ? 1 : 0]);
+    }
+  
+    /**
+     * Return the file identifier.   Behavior is undefined for FlatBuffers whose
+     * schema does not include a file_identifier (likely points at padding or the
+     * start of a the root vtable).
+     */
+    getBufferIdentifier(): string {
+      if (this.bytes_.length < this.position_ + SIZEOF_INT +
+          FILE_IDENTIFIER_LENGTH) {
+        throw new Error(
+            'FlatBuffers: ByteBuffer is too short to contain an identifier.');
+      }
+      let result = "";
+      for (let i = 0; i < FILE_IDENTIFIER_LENGTH; i++) {
+        result += String.fromCharCode(
+            this.readInt8(this.position_ + SIZEOF_INT + i));
+      }
+      return result;
+    }
+  
+    /**
+     * Look up a field in the vtable, return an offset into the object, or 0 if the
+     * field is not present.
+     */
+    __offset(bb_pos: number, vtable_offset: number): Offset {
+      const vtable = bb_pos - this.readInt32(bb_pos);
+      return vtable_offset < this.readInt16(vtable) ? this.readInt16(vtable + vtable_offset) : 0;
+    }
+  
+    /**
+     * Initialize any Table-derived type to point to the union at the given offset.
+     */
+    __union(t: Table, offset: number): Table {
+      t.bb_pos = offset + this.readInt32(offset);
+      t.bb = this;
+      return t;
+    }
+  
+    /**
+     * Create a JavaScript string from UTF-8 data stored inside the FlatBuffer.
+     * This allocates a new string and converts to wide chars upon each access.
+     *
+     * To avoid the conversion to UTF-16, pass Encoding.UTF8_BYTES as
+     * the "optionalEncoding" argument. This is useful for avoiding conversion to
+     * and from UTF-16 when the data will just be packaged back up in another
+     * FlatBuffer later on.
+     *
+     * @param offset
+     * @param opt_encoding Defaults to UTF16_STRING
+     */
+    __string(offset: number, opt_encoding?: Encoding): string | Uint8Array {
+      offset += this.readInt32(offset);
+  
+      const length = this.readInt32(offset);
+      let result = '';
+      let i = 0;
+  
+      offset += SIZEOF_INT;
+  
+      if (opt_encoding === Encoding.UTF8_BYTES) {
+        return this.bytes_.subarray(offset, offset + length);
+      }
+  
+      while (i < length) {
+        let codePoint;
+  
+        // Decode UTF-8
+        const a = this.readUint8(offset + i++);
+        if (a < 0xC0) {
+          codePoint = a;
+        } else {
+          const b = this.readUint8(offset + i++);
+          if (a < 0xE0) {
+            codePoint =
+              ((a & 0x1F) << 6) |
+              (b & 0x3F);
+          } else {
+            const c = this.readUint8(offset + i++);
+            if (a < 0xF0) {
+              codePoint =
+                ((a & 0x0F) << 12) |
+                ((b & 0x3F) << 6) |
+                (c & 0x3F);
+            } else {
+              const d = this.readUint8(offset + i++);
+              codePoint =
+                ((a & 0x07) << 18) |
+                ((b & 0x3F) << 12) |
+                ((c & 0x3F) << 6) |
+                (d & 0x3F);
+            }
+          }
+        }
+  
+        // Encode UTF-16
+        if (codePoint < 0x10000) {
+          result += String.fromCharCode(codePoint);
+        } else {
+          codePoint -= 0x10000;
+          result += String.fromCharCode(
+            (codePoint >> 10) + 0xD800,
+            (codePoint & ((1 << 10) - 1)) + 0xDC00);
+        }
+      }
+  
+      return result;
+    }
+  
+    /**
+     * Handle unions that can contain string as its member, if a Table-derived type then initialize it, 
+     * if a string then return a new one
+     * 
+     * WARNING: strings are immutable in JS so we can't change the string that the user gave us, this 
+     * makes the behaviour of __union_with_string different compared to __union
+     */
+    __union_with_string(o: Table | string, offset: number) : Table | string {
+      if(typeof o === 'string') {
+        return this.__string(offset) as string;
+      } 
+      return this.__union(o, offset);
+    }
+  
+    /**
+     * Retrieve the relative offset stored at "offset"
+     */
+    __indirect(offset: Offset): Offset {
+      return offset + this.readInt32(offset);
+    }
+  
+    /**
+     * Get the start of data of a vector whose offset is stored at "offset" in this object.
+     */
+    __vector(offset: Offset): Offset {
+      return offset + this.readInt32(offset) + SIZEOF_INT; // data starts after the length
+    }
+  
+    /**
+     * Get the length of a vector whose offset is stored at "offset" in this object.
+     */
+    __vector_len(offset: Offset): Offset {
+      return this.readInt32(offset + this.readInt32(offset));
+    }
+  
+    __has_identifier(ident: string): boolean {
+      if (ident.length != FILE_IDENTIFIER_LENGTH) {
+        throw new Error('FlatBuffers: file identifier must be length ' +
+                        FILE_IDENTIFIER_LENGTH);
+      }
+      for (let i = 0; i < FILE_IDENTIFIER_LENGTH; i++) {
+        if (ident.charCodeAt(i) != this.readInt8(this.position() + SIZEOF_INT + i)) {
+          return false;
+        }
+      }
+      return true;
+    }
+  
+    /**
+     * A helper function to avoid generated code depending on this file directly.
+     */
+    createLong(low: number, high: number): Long {
+      return Long.create(low, high);
+    }
+  
+    /**
+     * A helper function for generating list for obj api
+     */
+    createScalarList(listAccessor: (i: number) => unknown, listLength: number): any[] {
+      const ret: any[]  = [];
+      for(let i = 0; i < listLength; ++i) {
+        if(listAccessor(i) !== null) {
+          ret.push(listAccessor(i));
+        }
+      }
+  
+      return ret;
+    }
+  
+    /**
+     * A helper function for generating list for obj api
+     * @param listAccessor function that accepts an index and return data at that index
+     * @param listLength listLength
+     * @param res result list
+     */
+    createObjList(listAccessor: (i: number) => unknown, listLength: number): any[] {
+      const ret: any[] = [];
+      for(let i = 0; i < listLength; ++i) {
+        const val = listAccessor(i);
+        if(val !== null) {
+          ret.push((val as IGeneratedObject).unpack());
+        }
+      }
+      
+      return ret;
+    }
+  
+  }
\ No newline at end of file
diff --git a/igv_component/node_modules/flatbuffers/ts/constants.ts b/igv_component/node_modules/flatbuffers/ts/constants.ts
new file mode 100644
index 0000000000000000000000000000000000000000..04510fbcf762cf62b2fc40aec666cba4f3c887c6
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/constants.ts
@@ -0,0 +1,4 @@
+export const SIZEOF_SHORT = 2;
+export const SIZEOF_INT = 4;
+export const FILE_IDENTIFIER_LENGTH = 4;
+export const SIZE_PREFIX_LENGTH = 4;
\ No newline at end of file
diff --git a/igv_component/node_modules/flatbuffers/ts/encoding.ts b/igv_component/node_modules/flatbuffers/ts/encoding.ts
new file mode 100644
index 0000000000000000000000000000000000000000..856792ce207b9c004f830ded878204f840961b31
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/encoding.ts
@@ -0,0 +1,4 @@
+export enum Encoding {
+    UTF8_BYTES = 1,
+    UTF16_STRING = 2
+}
\ No newline at end of file
diff --git a/igv_component/node_modules/flatbuffers/ts/flatbuffers.ts b/igv_component/node_modules/flatbuffers/ts/flatbuffers.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e7b0729b4188e77532f1ee0a3c1aece455e1748e
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/flatbuffers.ts
@@ -0,0 +1,13 @@
+export { SIZEOF_SHORT } from './constants'
+export { SIZEOF_INT } from './constants'
+export { FILE_IDENTIFIER_LENGTH } from './constants'
+export { SIZE_PREFIX_LENGTH } from './constants'
+
+export { Table, Offset } from './types'
+
+export { int32, float32, float64, isLittleEndian } from './utils'
+
+export { Long, createLong } from './long'
+export { Encoding } from './encoding'
+export { Builder } from './builder'
+export { ByteBuffer } from './byte-buffer'
diff --git a/igv_component/node_modules/flatbuffers/ts/flexbuffers.ts b/igv_component/node_modules/flatbuffers/ts/flexbuffers.ts
new file mode 100644
index 0000000000000000000000000000000000000000..b8c722d1e65a88fcb31d2f5a967dbcea23f5550b
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/flexbuffers.ts
@@ -0,0 +1,18 @@
+/* eslint-disable @typescript-eslint/no-namespace */
+import { Builder } from './flexbuffers/builder'
+import { toReference } from './flexbuffers/reference'
+export { toReference } from './flexbuffers/reference'
+
+export function builder(): Builder {
+    return new Builder();
+}
+
+export function toObject(buffer: ArrayBuffer): unknown {
+    return toReference(buffer).toObject();
+}
+
+export function encode(object: unknown, size = 2048, deduplicateStrings = true, deduplicateKeys = true, deduplicateKeyVectors = true): Uint8Array {
+    const builder = new Builder(size > 0 ? size : 2048, deduplicateStrings, deduplicateKeys, deduplicateKeyVectors);
+    builder.add(object);
+    return builder.finish();
+}
diff --git a/igv_component/node_modules/flatbuffers/ts/flexbuffers/bit-width-util.ts b/igv_component/node_modules/flatbuffers/ts/flexbuffers/bit-width-util.ts
new file mode 100644
index 0000000000000000000000000000000000000000..acb3c96ed0470c2a9ddb114e7cf41a84988361e7
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/flexbuffers/bit-width-util.ts
@@ -0,0 +1,34 @@
+import { BitWidth } from './bit-width'
+
+export function toByteWidth(bitWidth: BitWidth): number {
+  return 1 << bitWidth;
+}
+
+export function iwidth(value: number | bigint): BitWidth {
+  if (value >= -128 && value <= 127) return BitWidth.WIDTH8;
+  if (value >= -32768 && value <= 32767) return BitWidth.WIDTH16;
+  if (value >= -2147483648 && value <= 2147483647) return BitWidth.WIDTH32;
+  return BitWidth.WIDTH64;
+}
+
+export function fwidth(value: number): BitWidth {
+  return value === Math.fround(value) ? BitWidth.WIDTH32 : BitWidth.WIDTH64;
+}
+
+export function uwidth(value: number): BitWidth {
+  if (value <= 255) return BitWidth.WIDTH8;
+  if (value <= 65535) return BitWidth.WIDTH16;
+  if (value <= 4294967295) return BitWidth.WIDTH32;
+  return BitWidth.WIDTH64;
+}
+
+export function fromByteWidth(value: number): BitWidth {
+  if (value === 1) return BitWidth.WIDTH8;
+  if (value === 2) return BitWidth.WIDTH16;
+  if (value === 4) return BitWidth.WIDTH32;
+  return BitWidth.WIDTH64;
+}
+
+export function paddingSize(bufSize: number, scalarSize: number): number {
+  return (~bufSize + 1) & (scalarSize - 1);
+}
\ No newline at end of file
diff --git a/igv_component/node_modules/flatbuffers/ts/flexbuffers/bit-width.ts b/igv_component/node_modules/flatbuffers/ts/flexbuffers/bit-width.ts
new file mode 100644
index 0000000000000000000000000000000000000000..5f85b613816cf3e0ca2f4615e5182c688059fb72
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/flexbuffers/bit-width.ts
@@ -0,0 +1,6 @@
+export enum BitWidth {
+  WIDTH8 = 0,
+  WIDTH16 = 1,
+  WIDTH32 = 2,
+  WIDTH64 = 3,
+}
\ No newline at end of file
diff --git a/igv_component/node_modules/flatbuffers/ts/flexbuffers/builder.ts b/igv_component/node_modules/flatbuffers/ts/flexbuffers/builder.ts
new file mode 100644
index 0000000000000000000000000000000000000000..4321547263bbf25b1306b6326029fcc4ac3dec8d
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/flexbuffers/builder.ts
@@ -0,0 +1,549 @@
+import { BitWidth } from './bit-width'
+import { paddingSize, iwidth, uwidth, fwidth, toByteWidth, fromByteWidth } from './bit-width-util'
+import { toUTF8Array } from './flexbuffers-util'
+import { ValueType } from './value-type'
+import { isNumber, isTypedVectorElement, toTypedVector } from './value-type-util'
+import { StackValue } from './stack-value'
+
+interface StackPointer {
+  stackPosition: number,
+  isVector: boolean
+  presorted?: boolean
+}
+
+export class Builder {
+  buffer: ArrayBuffer
+  view: DataView
+
+  readonly stack: Array<StackValue> = [];
+  readonly stackPointers: Array<StackPointer> = [];
+  offset = 0;
+  finished = false;
+  readonly stringLookup: Record<string, StackValue> = {};
+  readonly keyLookup: Record<string, StackValue> = {};
+  readonly keyVectorLookup: Record<string, StackValue> = {};
+  readonly indirectIntLookup: Record<number, StackValue> = {};
+  readonly indirectUIntLookup: Record<number, StackValue> = {};
+  readonly indirectFloatLookup: Record<number, StackValue> = {};
+
+  constructor(size = 2048, private dedupStrings = true, private dedupKeys = true, private dedupKeyVectors = true) {
+    this.buffer = new ArrayBuffer(size > 0 ? size : 2048);
+    this.view = new DataView(this.buffer);
+  }
+
+  private align(width: BitWidth) {
+    const byteWidth = toByteWidth(width);
+    this.offset += paddingSize(this.offset, byteWidth);
+    return byteWidth;
+  }
+
+  computeOffset(newValueSize: number): number {
+    const targetOffset = this.offset + newValueSize;
+    let size = this.buffer.byteLength;
+    const prevSize = size;
+    while (size < targetOffset) {
+      size <<= 1;
+    }
+    if (prevSize < size) {
+      const prevBuffer = this.buffer;
+      this.buffer = new ArrayBuffer(size);
+      this.view = new DataView(this.buffer);
+      new Uint8Array(this.buffer).set(new Uint8Array(prevBuffer), 0);
+    }
+    return targetOffset;
+  }
+
+  pushInt(value: number, width: BitWidth): void {
+    if (width === BitWidth.WIDTH8) {
+      this.view.setInt8(this.offset, value);
+    } else if (width === BitWidth.WIDTH16) {
+      this.view.setInt16(this.offset, value, true);
+    } else if (width === BitWidth.WIDTH32) {
+      this.view.setInt32(this.offset, value, true);
+    } else if (width === BitWidth.WIDTH64) {
+      this.view.setBigInt64(this.offset, BigInt(value), true);
+    } else {
+      throw `Unexpected width: ${width} for value: ${value}`;
+    }
+  }
+
+  pushUInt(value: number, width: BitWidth): void {
+    if (width === BitWidth.WIDTH8) {
+      this.view.setUint8(this.offset, value);
+    } else if (width === BitWidth.WIDTH16) {
+      this.view.setUint16(this.offset, value, true);
+    } else if (width === BitWidth.WIDTH32) {
+      this.view.setUint32(this.offset, value, true);
+    } else if (width === BitWidth.WIDTH64) {
+      this.view.setBigUint64(this.offset, BigInt(value), true);
+    } else {
+      throw `Unexpected width: ${width} for value: ${value}`;
+    }
+  }
+
+  private writeInt(value: number, byteWidth: number) {
+    const newOffset = this.computeOffset(byteWidth);
+    this.pushInt(value, fromByteWidth(byteWidth));
+    this.offset = newOffset;
+  }
+
+  private writeUInt(value: number, byteWidth: number) {
+    const newOffset = this.computeOffset(byteWidth);
+    this.pushUInt(value, fromByteWidth(byteWidth));
+    this.offset = newOffset;
+  }
+
+  private writeBlob(arrayBuffer: ArrayBuffer) {
+    const length = arrayBuffer.byteLength;
+    const bitWidth = uwidth(length);
+    const byteWidth = this.align(bitWidth);
+    this.writeUInt(length, byteWidth);
+    const blobOffset = this.offset;
+    const newOffset = this.computeOffset(length);
+    new Uint8Array(this.buffer).set(new Uint8Array(arrayBuffer), blobOffset);
+    this.stack.push(this.offsetStackValue(blobOffset, ValueType.BLOB, bitWidth));
+    this.offset = newOffset;
+  }
+
+  private writeString(str: string): void {
+    if (this.dedupStrings && Object.prototype.hasOwnProperty.call(this.stringLookup, str)) {
+      this.stack.push(this.stringLookup[str]);
+      return;
+    }
+    const utf8 = toUTF8Array(str);
+    const length = utf8.length;
+    const bitWidth = uwidth(length);
+    const byteWidth = this.align(bitWidth);
+    this.writeUInt(length, byteWidth);
+    const stringOffset = this.offset;
+    const newOffset = this.computeOffset(length + 1);
+    new Uint8Array(this.buffer).set(utf8, stringOffset);
+    const stackValue = this.offsetStackValue(stringOffset, ValueType.STRING, bitWidth);
+    this.stack.push(stackValue);
+    if (this.dedupStrings) {
+      this.stringLookup[str] = stackValue;
+    }
+    this.offset = newOffset;
+  }
+
+  private writeKey(str: string): void {
+    if (this.dedupKeys && Object.prototype.hasOwnProperty.call(this.keyLookup, str)) {
+      this.stack.push(this.keyLookup[str]);
+      return;
+    }
+    const utf8 = toUTF8Array(str);
+    const length = utf8.length;
+    const newOffset = this.computeOffset(length + 1);
+    new Uint8Array(this.buffer).set(utf8, this.offset);
+    const stackValue = this.offsetStackValue(this.offset, ValueType.KEY, BitWidth.WIDTH8);
+    this.stack.push(stackValue);
+    if (this.dedupKeys) {
+      this.keyLookup[str] = stackValue;
+    }
+    this.offset = newOffset;
+  }
+
+  private writeStackValue(value: StackValue, byteWidth: number): void {
+    const newOffset = this.computeOffset(byteWidth);
+    if (value.isOffset()) {
+      const relativeOffset = this.offset - value.offset;
+      if (byteWidth === 8 || BigInt(relativeOffset) < (BigInt(1) << BigInt(byteWidth * 8))) {
+        this.writeUInt(relativeOffset, byteWidth);
+      } else {
+        throw `Unexpected size ${byteWidth}. This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new`
+      }
+    } else {
+      value.writeToBuffer(byteWidth);
+    }
+    this.offset = newOffset;
+  }
+
+  private integrityCheckOnValueAddition() {
+    if (this.finished) {
+      throw "Adding values after finish is prohibited";
+    }
+    if (this.stackPointers.length !== 0 && this.stackPointers[this.stackPointers.length - 1].isVector === false) {
+      if (this.stack[this.stack.length - 1].type !== ValueType.KEY) {
+        throw "Adding value to a map before adding a key is prohibited";
+      }
+    }
+  }
+
+  private integrityCheckOnKeyAddition() {
+    if (this.finished) {
+      throw "Adding values after finish is prohibited";
+    }
+    if (this.stackPointers.length === 0 || this.stackPointers[this.stackPointers.length - 1].isVector) {
+      throw "Adding key before starting a map is prohibited";
+    }
+  }
+
+  startVector(): void {
+    this.stackPointers.push({ stackPosition: this.stack.length, isVector: true });
+  }
+
+  startMap(presorted = false): void {
+    this.stackPointers.push({ stackPosition: this.stack.length, isVector: false, presorted: presorted });
+  }
+
+  private endVector(stackPointer: StackPointer) {
+    const vecLength = this.stack.length - stackPointer.stackPosition;
+    const vec = this.createVector(stackPointer.stackPosition, vecLength, 1);
+    this.stack.splice(stackPointer.stackPosition, vecLength);
+    this.stack.push(vec);
+  }
+
+  private endMap(stackPointer: StackPointer) {
+    if (!stackPointer.presorted) {
+      this.sort(stackPointer);
+    }
+    let keyVectorHash = "";
+    for (let i = stackPointer.stackPosition; i < this.stack.length; i += 2) {
+      keyVectorHash += `,${this.stack[i].offset}`;
+    }
+    const vecLength = (this.stack.length - stackPointer.stackPosition) >> 1;
+
+    if (this.dedupKeyVectors && !Object.prototype.hasOwnProperty.call(this.keyVectorLookup, keyVectorHash)) {
+      this.keyVectorLookup[keyVectorHash] = this.createVector(stackPointer.stackPosition, vecLength, 2);
+    }
+    const keysStackValue = this.dedupKeyVectors ? this.keyVectorLookup[keyVectorHash] : this.createVector(stackPointer.stackPosition, vecLength, 2);
+    const valuesStackValue = this.createVector(stackPointer.stackPosition + 1, vecLength, 2, keysStackValue);
+    this.stack.splice(stackPointer.stackPosition, vecLength << 1);
+    this.stack.push(valuesStackValue);
+  }
+
+  private sort(stackPointer: StackPointer) {
+    const view = this.view
+    const stack = this.stack
+
+    function shouldFlip(v1: StackValue, v2: StackValue) {
+      if (v1.type !== ValueType.KEY || v2.type !== ValueType.KEY) {
+        throw `Stack values are not keys ${v1} | ${v2}. Check if you combined [addKey] with add... method calls properly.`
+      }
+      let c1, c2;
+      let index = 0;
+      do {
+        c1 = view.getUint8(v1.offset + index);
+        c2 = view.getUint8(v2.offset + index);
+        if (c2 < c1) return true;
+        if (c1 < c2) return false;
+        index += 1;
+      } while (c1 !== 0 && c2 !== 0);
+      return false;
+    }
+
+    function swap(stack: Array<StackValue>, flipIndex: number, i: number) {
+      if (flipIndex === i) return;
+      const k = stack[flipIndex];
+      const v = stack[flipIndex + 1];
+      stack[flipIndex] = stack[i];
+      stack[flipIndex + 1] = stack[i + 1];
+      stack[i] = k;
+      stack[i + 1] = v;
+    }
+
+    function selectionSort() {
+      for (let i = stackPointer.stackPosition; i < stack.length; i += 2) {
+        let flipIndex = i;
+        for (let j = i + 2; j < stack.length; j += 2) {
+          if (shouldFlip(stack[flipIndex], stack[j])) {
+            flipIndex = j;
+          }
+        }
+        if (flipIndex !== i) {
+          swap(stack, flipIndex, i);
+        }
+      }
+    }
+
+    function smaller(v1: StackValue, v2: StackValue) {
+      if (v1.type !== ValueType.KEY || v2.type !== ValueType.KEY) {
+        throw `Stack values are not keys ${v1} | ${v2}. Check if you combined [addKey] with add... method calls properly.`
+      }
+      if (v1.offset === v2.offset) {
+        return false;
+      }
+      let c1, c2;
+      let index = 0;
+      do {
+        c1 = view.getUint8(v1.offset + index);
+        c2 = view.getUint8(v2.offset + index);
+        if (c1 < c2) return true;
+        if (c2 < c1) return false;
+        index += 1;
+      } while (c1 !== 0 && c2 !== 0);
+      return false;
+    }
+
+    function quickSort(left: number, right: number) {
+
+      if (left < right) {
+        const mid = left + (((right - left) >> 2)) * 2;
+        const pivot = stack[mid];
+        let left_new = left;
+        let right_new = right;
+
+        do {
+          while (smaller(stack[left_new], pivot)) {
+            left_new += 2;
+          }
+          while (smaller(pivot, stack[right_new])) {
+            right_new -= 2;
+          }
+          if (left_new <= right_new) {
+            swap(stack, left_new, right_new);
+            left_new += 2;
+            right_new -= 2;
+          }
+        } while (left_new <= right_new);
+
+        quickSort(left, right_new);
+        quickSort(left_new, right);
+
+      }
+    }
+
+    let sorted = true;
+    for (let i = stackPointer.stackPosition; i < this.stack.length - 2; i += 2) {
+      if (shouldFlip(this.stack[i], this.stack[i + 2])) {
+        sorted = false;
+        break;
+      }
+    }
+
+    if (!sorted) {
+      if (this.stack.length - stackPointer.stackPosition > 40) {
+        quickSort(stackPointer.stackPosition, this.stack.length - 2);
+      } else {
+        selectionSort();
+      }
+    }
+  }
+
+  end(): void {
+    if (this.stackPointers.length < 1) return;
+    const pointer = this.stackPointers.pop() as StackPointer;
+    if (pointer.isVector) {
+      this.endVector(pointer);
+    } else {
+      this.endMap(pointer);
+    }
+  }
+
+  private createVector(start: number, vecLength: number, step: number, keys: StackValue | null = null) {
+    let bitWidth = uwidth(vecLength);
+    let prefixElements = 1;
+    if (keys !== null) {
+      const elementWidth = keys.elementWidth(this.offset, 0);
+      if (elementWidth > bitWidth) {
+        bitWidth = elementWidth;
+      }
+      prefixElements += 2;
+    }
+    let vectorType = ValueType.KEY;
+    let typed = keys === null;
+    for (let i = start; i < this.stack.length; i += step) {
+      const elementWidth = this.stack[i].elementWidth(this.offset, i + prefixElements);
+      if (elementWidth > bitWidth) {
+        bitWidth = elementWidth;
+      }
+      if (i === start) {
+        vectorType = this.stack[i].type;
+        typed = typed && isTypedVectorElement(vectorType);
+      } else {
+        if (vectorType !== this.stack[i].type) {
+          typed = false;
+        }
+      }
+    }
+    const byteWidth = this.align(bitWidth);
+    const fix = typed && isNumber(vectorType) && vecLength >= 2 && vecLength <= 4;
+    if (keys !== null) {
+      this.writeStackValue(keys, byteWidth);
+      this.writeUInt(1 << keys.width, byteWidth);
+    }
+    if (!fix) {
+      this.writeUInt(vecLength, byteWidth);
+    }
+    const vecOffset = this.offset;
+    for (let i = start; i < this.stack.length; i += step) {
+      this.writeStackValue(this.stack[i], byteWidth);
+    }
+    if (!typed) {
+      for (let i = start; i < this.stack.length; i += step) {
+        this.writeUInt(this.stack[i].storedPackedType(), 1);
+      }
+    }
+    if (keys !== null) {
+      return this.offsetStackValue(vecOffset, ValueType.MAP, bitWidth);
+    }
+    if (typed) {
+      const vType = toTypedVector(vectorType, fix ? vecLength : 0);
+      return this.offsetStackValue(vecOffset, vType, bitWidth);
+    }
+    return this.offsetStackValue(vecOffset, ValueType.VECTOR, bitWidth);
+  }
+
+  private nullStackValue() {
+    return new StackValue(this, ValueType.NULL, BitWidth.WIDTH8);
+  }
+
+  private boolStackValue(value: boolean) {
+    return new StackValue(this, ValueType.BOOL, BitWidth.WIDTH8, value);
+  }
+
+  private intStackValue(value: number | bigint) {
+    return new StackValue(this, ValueType.INT, iwidth(value), value as number);
+  }
+
+  private uintStackValue(value: number) {
+    return new StackValue(this, ValueType.UINT, uwidth(value), value);
+  }
+
+  private floatStackValue(value: number) {
+    return new StackValue(this, ValueType.FLOAT, fwidth(value), value);
+  }
+
+  private offsetStackValue(offset: number, valueType: ValueType, bitWidth: BitWidth): StackValue {
+    return new StackValue(this, valueType, bitWidth, null, offset);
+  }
+
+  private finishBuffer() {
+    if (this.stack.length !== 1) {
+      throw `Stack has to be exactly 1, but it is ${this.stack.length}. You have to end all started vectors and maps before calling [finish]`;
+    }
+    const value = this.stack[0];
+    const byteWidth = this.align(value.elementWidth(this.offset, 0));
+    this.writeStackValue(value, byteWidth);
+    this.writeUInt(value.storedPackedType(), 1);
+    this.writeUInt(byteWidth, 1);
+    this.finished = true;
+  }
+
+  add(value: undefined | null | boolean | bigint | number | DataView | string | Array<unknown> | Record<string, unknown> | unknown): void {
+    this.integrityCheckOnValueAddition();
+    if (typeof value === 'undefined') {
+      throw "You need to provide a value";
+    }
+    if (value === null) {
+      this.stack.push(this.nullStackValue());
+    } else if (typeof value === "boolean") {
+      this.stack.push(this.boolStackValue(value));
+    } else if (typeof value === "bigint") {
+      this.stack.push(this.intStackValue(value));
+    } else if (typeof value == 'number') {
+      if (Number.isInteger(value)) {
+        this.stack.push(this.intStackValue(value));
+      } else {
+        this.stack.push(this.floatStackValue(value));
+      }
+    } else if (ArrayBuffer.isView(value)) {
+      this.writeBlob(value.buffer);
+    } else if (typeof value === 'string' || value instanceof String) {
+      this.writeString(value as string);
+    } else if (Array.isArray(value)) {
+      this.startVector();
+      for (let i = 0; i < value.length; i++) {
+        this.add(value[i]);
+      }
+      this.end();
+    } else if (typeof value === 'object') {
+      const properties = Object.getOwnPropertyNames(value).sort();
+      this.startMap(true);
+      for (let i = 0; i < properties.length; i++) {
+        const key = properties[i];
+        this.addKey(key);
+        this.add((value as Record<string, unknown>)[key]);
+      }
+      this.end();
+    } else {
+      throw `Unexpected value input ${value}`;
+    }
+  }
+
+  finish(): Uint8Array {
+    if (!this.finished) {
+      this.finishBuffer();
+    }
+    const result = this.buffer.slice(0, this.offset);
+    return new Uint8Array(result);
+  }
+
+  isFinished(): boolean {
+    return this.finished;
+  }
+
+  addKey(key: string): void {
+    this.integrityCheckOnKeyAddition();
+    this.writeKey(key);
+  }
+
+  addInt(value: number, indirect = false, deduplicate = false): void {
+    this.integrityCheckOnValueAddition();
+    if (!indirect) {
+      this.stack.push(this.intStackValue(value));
+      return;
+    }
+    if (deduplicate && Object.prototype.hasOwnProperty.call(this.indirectIntLookup, value)) {
+      this.stack.push(this.indirectIntLookup[value]);
+      return;
+    }
+    const stackValue = this.intStackValue(value);
+    const byteWidth = this.align(stackValue.width);
+    const newOffset = this.computeOffset(byteWidth);
+    const valueOffset = this.offset;
+    stackValue.writeToBuffer(byteWidth);
+    const stackOffset = this.offsetStackValue(valueOffset, ValueType.INDIRECT_INT, stackValue.width);
+    this.stack.push(stackOffset);
+    this.offset = newOffset;
+    if (deduplicate) {
+      this.indirectIntLookup[value] = stackOffset;
+    }
+  }
+
+  addUInt(value: number, indirect = false, deduplicate = false): void {
+    this.integrityCheckOnValueAddition();
+    if (!indirect) {
+      this.stack.push(this.uintStackValue(value));
+      return;
+    }
+    if (deduplicate && Object.prototype.hasOwnProperty.call(this.indirectUIntLookup, value)) {
+      this.stack.push(this.indirectUIntLookup[value]);
+      return;
+    }
+    const stackValue = this.uintStackValue(value);
+    const byteWidth = this.align(stackValue.width);
+    const newOffset = this.computeOffset(byteWidth);
+    const valueOffset = this.offset;
+    stackValue.writeToBuffer(byteWidth);
+    const stackOffset = this.offsetStackValue(valueOffset, ValueType.INDIRECT_UINT, stackValue.width);
+    this.stack.push(stackOffset);
+    this.offset = newOffset;
+    if (deduplicate) {
+      this.indirectUIntLookup[value] = stackOffset;
+    }
+  }
+
+  addFloat(value: number, indirect = false, deduplicate = false): void {
+    this.integrityCheckOnValueAddition();
+    if (!indirect) {
+      this.stack.push(this.floatStackValue(value));
+      return;
+    }
+    if (deduplicate && Object.prototype.hasOwnProperty.call(this.indirectFloatLookup, value)) {
+      this.stack.push(this.indirectFloatLookup[value]);
+      return;
+    }
+    const stackValue = this.floatStackValue(value);
+    const byteWidth = this.align(stackValue.width);
+    const newOffset = this.computeOffset(byteWidth);
+    const valueOffset = this.offset;
+    stackValue.writeToBuffer(byteWidth);
+    const stackOffset = this.offsetStackValue(valueOffset, ValueType.INDIRECT_FLOAT, stackValue.width);
+    this.stack.push(stackOffset);
+    this.offset = newOffset;
+    if (deduplicate) {
+      this.indirectFloatLookup[value] = stackOffset;
+    }
+  }
+}
diff --git a/igv_component/node_modules/flatbuffers/ts/flexbuffers/flexbuffers-util.ts b/igv_component/node_modules/flatbuffers/ts/flexbuffers/flexbuffers-util.ts
new file mode 100644
index 0000000000000000000000000000000000000000..83186e9dcfac0f636de65e0921cd97a97a25da95
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/flexbuffers/flexbuffers-util.ts
@@ -0,0 +1,9 @@
+export function fromUTF8Array(data: BufferSource): string {
+  const decoder = new TextDecoder();
+  return decoder.decode(data);
+}
+
+export function toUTF8Array(str: string) : Uint8Array {
+  const encoder = new TextEncoder();
+  return encoder.encode(str);
+}
\ No newline at end of file
diff --git a/igv_component/node_modules/flatbuffers/ts/flexbuffers/reference-util.ts b/igv_component/node_modules/flatbuffers/ts/flexbuffers/reference-util.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a5eb48d9a1ac636c460dbcf3ed0d8ef8dd66e498
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/flexbuffers/reference-util.ts
@@ -0,0 +1,119 @@
+import { BitWidth } from './bit-width'
+import { toByteWidth, fromByteWidth } from './bit-width-util'
+import { toUTF8Array, fromUTF8Array } from './flexbuffers-util'
+import { Reference } from './reference'
+
+import { Long } from '../long'
+
+export function validateOffset(dataView: DataView, offset: number, width: number): void {
+  if (dataView.byteLength <= offset + width || (offset & (toByteWidth(width) - 1)) !== 0) {
+    throw "Bad offset: " + offset + ", width: " + width;
+  }
+}
+
+export function readInt(dataView: DataView, offset: number, width: number): number | Long | bigint {
+  if (width < 2) {
+    if (width < 1) {
+      return dataView.getInt8(offset);
+    } else {
+      return dataView.getInt16(offset, true);
+    }
+  } else {
+    if (width < 3) {
+      return dataView.getInt32(offset, true)
+    } else {
+      if (dataView.setBigInt64 === undefined) {
+        return new Long(dataView.getUint32(offset, true), dataView.getUint32(offset + 4, true))
+      }
+      return dataView.getBigInt64(offset, true)
+    }
+  }
+}
+
+export function readUInt(dataView: DataView, offset: number, width: number): number | Long | bigint {
+  if (width < 2) {
+    if (width < 1) {
+      return dataView.getUint8(offset);
+    } else {
+      return dataView.getUint16(offset, true);
+    }
+  } else {
+    if (width < 3) {
+      return dataView.getUint32(offset, true)
+    } else {
+      if (dataView.getBigUint64 === undefined) {
+        return new Long(dataView.getUint32(offset, true), dataView.getUint32(offset + 4, true))
+      }
+      return dataView.getBigUint64(offset, true)
+    }
+  }
+}
+
+export function readFloat(dataView: DataView, offset: number, width: number): number {
+  if (width < BitWidth.WIDTH32) {
+    throw "Bad width: " + width;
+  }
+  if (width === BitWidth.WIDTH32) {
+    return dataView.getFloat32(offset, true);
+  }
+  return dataView.getFloat64(offset, true);
+}
+
+export function indirect(dataView: DataView, offset: number, width: number): number {
+  const step = readUInt(dataView, offset, width) as number;
+  return offset - step;
+}
+
+export function keyIndex(key: string, dataView: DataView, offset: number, parentWidth: number, byteWidth: number, length: number): number | null {
+  const input = toUTF8Array(key);
+  const keysVectorOffset = indirect(dataView, offset, parentWidth) - byteWidth * 3;
+  const bitWidth = fromByteWidth(byteWidth);
+  const indirectOffset = keysVectorOffset - (readUInt(dataView, keysVectorOffset, bitWidth) as number);
+  const _byteWidth = readUInt(dataView, keysVectorOffset + byteWidth, bitWidth) as number;
+  let low = 0;
+  let high = length - 1;
+  while (low <= high) {
+    const mid = (high + low) >> 1;
+    const dif = diffKeys(input, mid, dataView, indirectOffset, _byteWidth);
+    if (dif === 0) return mid;
+    if (dif < 0) {
+      high = mid - 1;
+    } else {
+      low = mid + 1;
+    }
+  }
+  return null;
+}
+
+export function diffKeys(input: Uint8Array, index: number, dataView: DataView, offset: number, width: number): number {
+  const keyOffset = offset + index * width;
+  const keyIndirectOffset = keyOffset - (readUInt(dataView, keyOffset, fromByteWidth(width)) as number);
+  for (let i = 0; i < input.length; i++) {
+    const dif = input[i] - dataView.getUint8(keyIndirectOffset + i);
+    if (dif !== 0) {
+      return dif;
+    }
+  }
+  return dataView.getUint8(keyIndirectOffset + input.length) === 0 ? 0 : -1;
+}
+
+export function valueForIndexWithKey(index: number, key: string, dataView: DataView, offset: number, parentWidth: number, byteWidth: number, length: number, path: string): Reference {
+  const _indirect = indirect(dataView, offset, parentWidth);
+  const elementOffset = _indirect + index * byteWidth;
+  const packedType = dataView.getUint8(_indirect + length * byteWidth + index);
+  return new Reference(dataView, elementOffset, fromByteWidth(byteWidth), packedType, `${path}/${key}`)
+}
+
+export function keyForIndex(index: number, dataView: DataView, offset: number, parentWidth: number, byteWidth: number): string {
+  const keysVectorOffset = indirect(dataView, offset, parentWidth) - byteWidth * 3;
+  const bitWidth = fromByteWidth(byteWidth);
+  const indirectOffset = keysVectorOffset - (readUInt(dataView, keysVectorOffset, bitWidth) as number);
+  const _byteWidth = readUInt(dataView, keysVectorOffset + byteWidth, bitWidth) as number;
+  const keyOffset = indirectOffset + index * _byteWidth;
+  const keyIndirectOffset = keyOffset - (readUInt(dataView, keyOffset, fromByteWidth(_byteWidth)) as number);
+  let length = 0;
+  while (dataView.getUint8(keyIndirectOffset + length) !== 0) {
+    length++;
+  }
+  return fromUTF8Array(new Uint8Array(dataView.buffer, keyIndirectOffset, length));
+}
\ No newline at end of file
diff --git a/igv_component/node_modules/flatbuffers/ts/flexbuffers/reference.ts b/igv_component/node_modules/flatbuffers/ts/flexbuffers/reference.ts
new file mode 100644
index 0000000000000000000000000000000000000000..bfcd927c2c4cc9fc45d87c113a28722b38ff3d74
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/flexbuffers/reference.ts
@@ -0,0 +1,185 @@
+import { fromByteWidth } from './bit-width-util'
+import { ValueType } from './value-type'
+import { isNumber, isIndirectNumber, isAVector, fixedTypedVectorElementSize, isFixedTypedVector, isTypedVector, typedVectorElementType, packedType, fixedTypedVectorElementType } from './value-type-util'
+import { indirect, keyForIndex, keyIndex, readFloat, readInt, readUInt, valueForIndexWithKey } from './reference-util'
+import { Long } from '../long';
+import { fromUTF8Array } from './flexbuffers-util';
+import { BitWidth } from './bit-width';
+
+export function toReference(buffer: ArrayBuffer): Reference {
+  const len = buffer.byteLength;
+  
+  if (len < 3) {
+    throw "Buffer needs to be bigger than 3";
+  }
+
+  const dataView = new DataView(buffer);
+  const byteWidth = dataView.getUint8(len - 1);
+  const packedType = dataView.getUint8(len - 2);
+  const parentWidth = fromByteWidth(byteWidth);
+  const offset = len - byteWidth - 2;
+
+  return new Reference(dataView, offset, parentWidth, packedType, "/")
+}
+
+export class Reference {
+  private readonly byteWidth: number
+  private readonly valueType: ValueType
+  private _length = -1
+  constructor(private dataView: DataView, private offset: number, private parentWidth: number, private packedType: ValueType, private path: string) {
+    this.byteWidth = 1 << (packedType & 3)
+    this.valueType = packedType >> 2
+  }
+
+  isNull(): boolean { return this.valueType === ValueType.NULL; }
+  isNumber(): boolean { return isNumber(this.valueType) || isIndirectNumber(this.valueType); }
+  isFloat(): boolean { return ValueType.FLOAT === this.valueType || ValueType.INDIRECT_FLOAT === this.valueType; }
+  isInt(): boolean { return this.isNumber() && !this.isFloat(); }
+  isString(): boolean { return ValueType.STRING === this.valueType || ValueType.KEY === this.valueType; }
+  isBool(): boolean { return ValueType.BOOL === this.valueType; }
+  isBlob(): boolean { return ValueType.BLOB === this.valueType; }
+  isVector(): boolean { return isAVector(this.valueType); }
+  isMap(): boolean { return ValueType.MAP === this.valueType; }
+
+  boolValue(): boolean | null {
+    if (this.isBool()) {
+      return readInt(this.dataView, this.offset, this.parentWidth) > 0;
+    }
+    return null;
+  }
+
+  intValue(): number | Long | bigint | null {
+    if (this.valueType === ValueType.INT) {
+      return readInt(this.dataView, this.offset, this.parentWidth);
+    }
+    if (this.valueType === ValueType.UINT) {
+      return readUInt(this.dataView, this.offset, this.parentWidth);
+    }
+    if (this.valueType === ValueType.INDIRECT_INT) {
+      return readInt(this.dataView, indirect(this.dataView, this.offset, this.parentWidth), fromByteWidth(this.byteWidth));
+    }
+    if (this.valueType === ValueType.INDIRECT_UINT) {
+      return readUInt(this.dataView, indirect(this.dataView, this.offset, this.parentWidth), fromByteWidth(this.byteWidth));
+    }
+    return null;
+  }
+
+  floatValue(): number | null {
+    if (this.valueType === ValueType.FLOAT) {
+      return readFloat(this.dataView, this.offset, this.parentWidth);
+    }
+    if (this.valueType === ValueType.INDIRECT_FLOAT) {
+      return readFloat(this.dataView, indirect(this.dataView, this.offset, this.parentWidth), fromByteWidth(this.byteWidth));
+    }
+    return null;
+  }
+
+  numericValue(): number | Long | bigint | null { return this.floatValue() || this.intValue()}
+
+  stringValue(): string | null {
+    if (this.valueType === ValueType.STRING || this.valueType === ValueType.KEY) {
+      const begin = indirect(this.dataView, this.offset, this.parentWidth);
+      return fromUTF8Array(new Uint8Array(this.dataView.buffer, begin, this.length()));
+    }
+    return null;
+  }
+
+  blobValue(): Uint8Array | null {
+    if (this.isBlob()) {
+      const begin = indirect(this.dataView, this.offset, this.parentWidth);
+      return new Uint8Array(this.dataView.buffer, begin, this.length());
+    }
+    return null;
+  }
+
+  get(key: number): Reference {
+    const length = this.length();
+    if (Number.isInteger(key) && isAVector(this.valueType)) {
+      if (key >= length || key < 0) {
+        throw `Key: [${key}] is not applicable on ${this.path} of ${this.valueType} length: ${length}`;
+      }
+      const _indirect = indirect(this.dataView, this.offset, this.parentWidth);
+      const elementOffset = _indirect + key * this.byteWidth;
+      let _packedType = this.dataView.getUint8(_indirect + length * this.byteWidth + key);
+      if (isTypedVector(this.valueType)) {
+        const _valueType = typedVectorElementType(this.valueType);
+        _packedType = packedType(_valueType, BitWidth.WIDTH8);
+      } else if (isFixedTypedVector(this.valueType)) {
+        const _valueType = fixedTypedVectorElementType(this.valueType);
+        _packedType = packedType(_valueType, BitWidth.WIDTH8);
+      }
+      return new Reference(this.dataView, elementOffset, fromByteWidth(this.byteWidth), _packedType, `${this.path}[${key}]`);
+    }
+    if (typeof key === 'string') {
+      const index = keyIndex(key, this.dataView, this.offset, this.parentWidth, this.byteWidth, length);
+      if (index !== null) {
+        return valueForIndexWithKey(index, key, this.dataView, this.offset, this.parentWidth, this.byteWidth, length, this.path)
+      }
+    }
+    throw `Key [${key}] is not applicable on ${this.path} of ${this.valueType}`;
+  }
+
+  length(): number {
+    let size;
+    if (this._length > -1) {
+      return this._length;
+    }
+    if (isFixedTypedVector(this.valueType)) {
+      this._length = fixedTypedVectorElementSize(this.valueType);
+    } else if (this.valueType === ValueType.BLOB
+      || this.valueType === ValueType.MAP
+      || isAVector(this.valueType)) {
+      this._length = readUInt(this.dataView, indirect(this.dataView, this.offset, this.parentWidth) - this.byteWidth, fromByteWidth(this.byteWidth)) as number
+    } else if (this.valueType === ValueType.NULL) {
+      this._length = 0;
+    } else if (this.valueType === ValueType.STRING) {
+      const _indirect = indirect(this.dataView, this.offset, this.parentWidth);
+      let sizeByteWidth = this.byteWidth;
+      size = readUInt(this.dataView, _indirect - sizeByteWidth, fromByteWidth(this.byteWidth));
+      while (this.dataView.getInt8(_indirect + (size as number)) !== 0) {
+        sizeByteWidth <<= 1;
+        size = readUInt(this.dataView, _indirect - sizeByteWidth, fromByteWidth(this.byteWidth));
+      }
+      this._length = size as number;
+    } else if (this.valueType === ValueType.KEY) {
+      const _indirect = indirect(this.dataView, this.offset, this.parentWidth);
+      size = 1;
+      while (this.dataView.getInt8(_indirect + size) !== 0) {
+        size++;
+      }
+      this._length = size;
+    } else {
+      this._length = 1;
+    }
+    return this._length;
+  }
+
+  toObject(): unknown {
+    const length = this.length();
+    if (this.isVector()) {
+      const result = [];
+      for (let i = 0; i < length; i++) {
+        result.push(this.get(i).toObject());
+      }
+      return result;
+    }
+    if (this.isMap()) {
+      const result: Record<string, unknown> = {};
+      for (let i = 0; i < length; i++) {
+        const key = keyForIndex(i, this.dataView, this.offset, this.parentWidth, this.byteWidth);
+        result[key] = valueForIndexWithKey(i, key, this.dataView, this.offset, this.parentWidth, this.byteWidth, length, this.path).toObject();
+      }
+      return result;
+    }
+    if (this.isNull()) {
+      return null;
+    }
+    if (this.isBool()) {
+      return this.boolValue();
+    }
+    if (this.isNumber()) {
+      return this.numericValue();
+    }
+    return this.blobValue() || this.stringValue();
+  }
+}
diff --git a/igv_component/node_modules/flatbuffers/ts/flexbuffers/stack-value.ts b/igv_component/node_modules/flatbuffers/ts/flexbuffers/stack-value.ts
new file mode 100644
index 0000000000000000000000000000000000000000..ef8e2f168247ff6e2d862d113ce00a0803a68f5b
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/flexbuffers/stack-value.ts
@@ -0,0 +1,61 @@
+import { Builder } from './builder'
+import { BitWidth } from './bit-width'
+import { paddingSize, uwidth, fromByteWidth } from './bit-width-util'
+import { ValueType } from './value-type'
+import { isInline, packedType } from './value-type-util'
+
+export class StackValue {
+  constructor(private builder: Builder, public type: ValueType, public width: number, public value: number | boolean | null = null, public offset: number = 0) {
+
+  }
+
+  elementWidth(size: number, index: number): BitWidth {
+    if (isInline(this.type)) return this.width;
+    for (let i = 0; i < 4; i++) {
+      const width = 1 << i;
+      const offsetLoc = size + paddingSize(size, width) + index * width;
+      const offset = offsetLoc - this.offset;
+      const bitWidth = uwidth(offset);
+      if (1 << bitWidth === width) {
+        return bitWidth;
+      }
+    }
+    throw `Element is unknown. Size: ${size} at index: ${index}. This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new`;
+  }
+
+  writeToBuffer(byteWidth: number): void {
+    const newOffset = this.builder.computeOffset(byteWidth);
+    if (this.type === ValueType.FLOAT) {
+      if (this.width === BitWidth.WIDTH32) {
+        this.builder.view.setFloat32(this.builder.offset, this.value as number, true);
+      } else {
+        this.builder.view.setFloat64(this.builder.offset, this.value as number, true);
+      }
+    } else if (this.type === ValueType.INT) {
+      const bitWidth = fromByteWidth(byteWidth);
+      this.builder.pushInt(this.value as number, bitWidth);
+    } else if (this.type === ValueType.UINT) {
+      const bitWidth = fromByteWidth(byteWidth);
+      this.builder.pushUInt(this.value as number, bitWidth);
+    } else if (this.type === ValueType.NULL) {
+      this.builder.pushInt(0, this.width);
+    } else if (this.type === ValueType.BOOL) {
+      this.builder.pushInt(this.value ? 1 : 0, this.width);
+    } else {
+      throw `Unexpected type: ${this.type}. This might be a bug. Please create an issue https://github.com/google/flatbuffers/issues/new`
+    }
+    this.offset = newOffset;
+  }
+
+  storedWidth(width = BitWidth.WIDTH8): BitWidth {
+    return isInline(this.type) ? Math.max(width, this.width) : this.width;
+  }
+
+  storedPackedType(width = BitWidth.WIDTH8): ValueType {
+    return packedType(this.type, this.storedWidth(width));
+  }
+
+  isOffset(): boolean {
+    return !isInline(this.type)
+  }
+}
\ No newline at end of file
diff --git a/igv_component/node_modules/flatbuffers/ts/flexbuffers/value-type-util.ts b/igv_component/node_modules/flatbuffers/ts/flexbuffers/value-type-util.ts
new file mode 100644
index 0000000000000000000000000000000000000000..da869a9ce10a9650e4672e60c649399a31d6afa3
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/flexbuffers/value-type-util.ts
@@ -0,0 +1,64 @@
+import { ValueType } from './value-type'
+
+export function isInline(value: ValueType): boolean {
+  return value === ValueType.BOOL
+    || value <= ValueType.FLOAT;
+}
+
+export function isNumber(value: ValueType): boolean {
+  return value >= ValueType.INT
+    && value <= ValueType.FLOAT;
+}
+
+export function isIndirectNumber(value: ValueType): boolean {
+  return value >= ValueType.INDIRECT_INT
+    && value <= ValueType.INDIRECT_FLOAT;
+}
+
+export function isTypedVectorElement(value: ValueType): boolean {
+  return value === ValueType.BOOL
+    || (value >= ValueType.INT
+      && value <= ValueType.STRING);
+}
+
+export function isTypedVector(value: ValueType): boolean {
+  return value === ValueType.VECTOR_BOOL
+    || (value >= ValueType.VECTOR_INT
+      && value <= ValueType.VECTOR_STRING_DEPRECATED);
+}
+
+export function isFixedTypedVector(value: ValueType): boolean {
+  return value >= ValueType.VECTOR_INT2
+    && value <= ValueType.VECTOR_FLOAT4;
+}
+
+export function isAVector(value: ValueType): boolean {
+  return isTypedVector(value)
+    || isFixedTypedVector(value)
+    || value === ValueType.VECTOR;
+}
+
+export function toTypedVector(valueType: ValueType, length: number): ValueType {
+  if (length === 0) return valueType - ValueType.INT + ValueType.VECTOR_INT;
+  if (length === 2) return valueType - ValueType.INT + ValueType.VECTOR_INT2;
+  if (length === 3) return valueType - ValueType.INT + ValueType.VECTOR_INT3;
+  if (length === 4) return valueType - ValueType.INT + ValueType.VECTOR_INT4;
+  throw "Unexpected length " + length;
+}
+
+export function typedVectorElementType(valueType: ValueType): ValueType {
+  return valueType - ValueType.VECTOR_INT + ValueType.INT;
+}
+
+export function fixedTypedVectorElementType(valueType: ValueType): ValueType {
+  return ((valueType - ValueType.VECTOR_INT2) % 3) + ValueType.INT;
+}
+
+export function fixedTypedVectorElementSize(valueType: ValueType): ValueType {
+  // The x / y >> 0 trick is to have an int division. Suppose to be faster than Math.floor()
+  return (((valueType - ValueType.VECTOR_INT2) / 3) >> 0) + 2;
+}
+
+export function packedType(valueType: ValueType, bitWidth: number): ValueType {
+  return bitWidth | (valueType << 2);
+}
\ No newline at end of file
diff --git a/igv_component/node_modules/flatbuffers/ts/flexbuffers/value-type.ts b/igv_component/node_modules/flatbuffers/ts/flexbuffers/value-type.ts
new file mode 100644
index 0000000000000000000000000000000000000000..9c88ba26d2154ed007052cf02d91f21bd1d1b26d
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/flexbuffers/value-type.ts
@@ -0,0 +1,30 @@
+export enum ValueType {
+  NULL = 0,
+  INT = 1,
+  UINT = 2,
+  FLOAT = 3,
+  KEY = 4,
+  STRING = 5,
+  INDIRECT_INT = 6,
+  INDIRECT_UINT = 7,
+  INDIRECT_FLOAT = 8,
+  MAP = 9,
+  VECTOR = 10,
+  VECTOR_INT = 11,
+  VECTOR_UINT = 12,
+  VECTOR_FLOAT = 13,
+  VECTOR_KEY = 14,
+  VECTOR_STRING_DEPRECATED = 15,
+  VECTOR_INT2 = 16,
+  VECTOR_UINT2 = 17,
+  VECTOR_FLOAT2 = 18,
+  VECTOR_INT3 = 19,
+  VECTOR_UINT3 = 20,
+  VECTOR_FLOAT3 = 21,
+  VECTOR_INT4 = 22,
+  VECTOR_UINT4 = 23,
+  VECTOR_FLOAT4 = 24,
+  BLOB = 25,
+  BOOL = 26,
+  VECTOR_BOOL = 36,
+}
\ No newline at end of file
diff --git a/igv_component/node_modules/flatbuffers/ts/long.ts b/igv_component/node_modules/flatbuffers/ts/long.ts
new file mode 100644
index 0000000000000000000000000000000000000000..50a3ea87fb665845705f547ef9fd794257b270c4
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/long.ts
@@ -0,0 +1,23 @@
+export function createLong(low: number, high: number): Long {
+    return Long.create(low, high);
+}
+  
+export class Long {
+    static readonly ZERO = new Long(0, 0)
+    low: number
+    high: number
+    constructor(low: number, high: number) {
+        this.low = low | 0;
+        this.high = high | 0;
+    }
+    static create(low: number, high: number): Long {
+        // Special-case zero to avoid GC overhead for default values
+        return low == 0 && high == 0 ? Long.ZERO : new Long(low, high);
+    }
+    toFloat64(): number {
+        return (this.low >>> 0) + this.high * 0x100000000;
+    }
+    equals(other: Long): boolean {
+        return this.low == other.low && this.high == other.high;
+    }
+}
\ No newline at end of file
diff --git a/igv_component/node_modules/flatbuffers/ts/types.ts b/igv_component/node_modules/flatbuffers/ts/types.ts
new file mode 100644
index 0000000000000000000000000000000000000000..30e40500781d775b0a5f72a8f9c6e47d0b8dc4d5
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/types.ts
@@ -0,0 +1,14 @@
+import { ByteBuffer } from './byte-buffer'
+import { Builder } from './builder'
+
+export type Offset = number;
+
+export type Table = {
+  bb: ByteBuffer
+  bb_pos: number
+};
+
+export interface IGeneratedObject {
+  pack(builder:Builder): Offset
+  unpack(): IGeneratedObject
+}
\ No newline at end of file
diff --git a/igv_component/node_modules/flatbuffers/ts/utils.ts b/igv_component/node_modules/flatbuffers/ts/utils.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a2902e3cf6b3bcebd4b0528537e12d20af4fe5db
--- /dev/null
+++ b/igv_component/node_modules/flatbuffers/ts/utils.ts
@@ -0,0 +1,4 @@
+export const int32 = new Int32Array(2);
+export const float32 = new Float32Array(int32.buffer);
+export const float64 = new Float64Array(int32.buffer);
+export const isLittleEndian = new Uint16Array(new Uint8Array([1, 0]).buffer)[0] === 1;
\ No newline at end of file
diff --git a/igv_component/node_modules/has-flag/index.js b/igv_component/node_modules/has-flag/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..5139728fba6a264353ecb5abd00135dabf8a922d
--- /dev/null
+++ b/igv_component/node_modules/has-flag/index.js
@@ -0,0 +1,8 @@
+'use strict';
+module.exports = (flag, argv) => {
+	argv = argv || process.argv;
+	const prefix = flag.startsWith('-') ? '' : (flag.length === 1 ? '-' : '--');
+	const pos = argv.indexOf(prefix + flag);
+	const terminatorPos = argv.indexOf('--');
+	return pos !== -1 && (terminatorPos === -1 ? true : pos < terminatorPos);
+};
diff --git a/igv_component/node_modules/has-flag/license b/igv_component/node_modules/has-flag/license
new file mode 100644
index 0000000000000000000000000000000000000000..e7af2f77107d73046421ef56c4684cbfdd3c1e89
--- /dev/null
+++ b/igv_component/node_modules/has-flag/license
@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/igv_component/node_modules/has-flag/package.json b/igv_component/node_modules/has-flag/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..e1eb17a15ed8808af7bd7085dc398108d9920ba2
--- /dev/null
+++ b/igv_component/node_modules/has-flag/package.json
@@ -0,0 +1,44 @@
+{
+  "name": "has-flag",
+  "version": "3.0.0",
+  "description": "Check if argv has a specific flag",
+  "license": "MIT",
+  "repository": "sindresorhus/has-flag",
+  "author": {
+    "name": "Sindre Sorhus",
+    "email": "sindresorhus@gmail.com",
+    "url": "sindresorhus.com"
+  },
+  "engines": {
+    "node": ">=4"
+  },
+  "scripts": {
+    "test": "xo && ava"
+  },
+  "files": [
+    "index.js"
+  ],
+  "keywords": [
+    "has",
+    "check",
+    "detect",
+    "contains",
+    "find",
+    "flag",
+    "cli",
+    "command-line",
+    "argv",
+    "process",
+    "arg",
+    "args",
+    "argument",
+    "arguments",
+    "getopt",
+    "minimist",
+    "optimist"
+  ],
+  "devDependencies": {
+    "ava": "*",
+    "xo": "*"
+  }
+}
diff --git a/igv_component/node_modules/has-flag/readme.md b/igv_component/node_modules/has-flag/readme.md
new file mode 100644
index 0000000000000000000000000000000000000000..677893c278a2e31f9671e83dd66fed51886cd258
--- /dev/null
+++ b/igv_component/node_modules/has-flag/readme.md
@@ -0,0 +1,70 @@
+# has-flag [![Build Status](https://travis-ci.org/sindresorhus/has-flag.svg?branch=master)](https://travis-ci.org/sindresorhus/has-flag)
+
+> Check if [`argv`](https://nodejs.org/docs/latest/api/process.html#process_process_argv) has a specific flag
+
+Correctly stops looking after an `--` argument terminator.
+
+
+## Install
+
+```
+$ npm install has-flag
+```
+
+
+## Usage
+
+```js
+// foo.js
+const hasFlag = require('has-flag');
+
+hasFlag('unicorn');
+//=> true
+
+hasFlag('--unicorn');
+//=> true
+
+hasFlag('f');
+//=> true
+
+hasFlag('-f');
+//=> true
+
+hasFlag('foo=bar');
+//=> true
+
+hasFlag('foo');
+//=> false
+
+hasFlag('rainbow');
+//=> false
+```
+
+```
+$ node foo.js -f --unicorn --foo=bar -- --rainbow
+```
+
+
+## API
+
+### hasFlag(flag, [argv])
+
+Returns a boolean for whether the flag exists.
+
+#### flag
+
+Type: `string`
+
+CLI flag to look for. The `--` prefix is optional.
+
+#### argv
+
+Type: `string[]`<br>
+Default: `process.argv`
+
+CLI arguments.
+
+
+## License
+
+MIT © [Sindre Sorhus](https://sindresorhus.com)
diff --git a/igv_component/node_modules/hoist-non-react-statics/CHANGELOG.md b/igv_component/node_modules/hoist-non-react-statics/CHANGELOG.md
new file mode 100644
index 0000000000000000000000000000000000000000..59994b427084d8447b8d954fe8f82c1c22c56e71
--- /dev/null
+++ b/igv_component/node_modules/hoist-non-react-statics/CHANGELOG.md
@@ -0,0 +1,37 @@
+# 3.3.2 (January 22, 2020)
+- Fix `React.memo` for v16.12+ (#93)
+
+# 3.3.1 (November 14, 2019)
+- Fix for UMD bundle (#85)
+- Tooling changes (#83, #84, #87)
+
+# 3.3.0 (January 23, 2019)
+- Prevent hoisting of React.memo statics (#73)
+
+# 3.2.1 (December 3, 2018)
+- Fixed `defaultProps`, `displayName` and `propTypes` being hoisted from `React.forwardRef` to `React.forwardRef`. ([#71])
+
+# 3.2.0 (November 26, 2018)
+- Added support for `getDerivedStateFromError`. ([#68])
+- Added support for React versions less than 0.14. ([#69])
+
+# 3.1.0 (October 30, 2018)
+- Added support for `contextType`. ([#62])
+- Reduced bundle size. ([e89c7a6])
+- Removed TypeScript definitions. ([#61])
+
+# 3.0.1 (July 28, 2018)
+- Fixed prop-types warnings. ([e0846fe])
+
+# 3.0.0 (July 27, 2018)
+- Dropped support for React versions less than 0.14. ([#55])
+- Added support for `React.forwardRef` components. ([#55])
+
+[#55]: https://github.com/mridgway/hoist-non-react-statics/pull/55
+[#61]: https://github.com/mridgway/hoist-non-react-statics/pull/61
+[#62]: https://github.com/mridgway/hoist-non-react-statics/pull/62
+[#68]: https://github.com/mridgway/hoist-non-react-statics/pull/68
+[#69]: https://github.com/mridgway/hoist-non-react-statics/pull/69
+[#71]: https://github.com/mridgway/hoist-non-react-statics/pull/71
+[e0846fe]: https://github.com/mridgway/hoist-non-react-statics/commit/e0846feefbad8b34d300de9966ffd607aacb81a3
+[e89c7a6]: https://github.com/mridgway/hoist-non-react-statics/commit/e89c7a6168edc19eeadb2d149e600b888e8b0446
diff --git a/igv_component/node_modules/hoist-non-react-statics/LICENSE.md b/igv_component/node_modules/hoist-non-react-statics/LICENSE.md
new file mode 100644
index 0000000000000000000000000000000000000000..2464f59ec1f7b6765cd487f8fa6a4148951a8eab
--- /dev/null
+++ b/igv_component/node_modules/hoist-non-react-statics/LICENSE.md
@@ -0,0 +1,29 @@
+Software License Agreement (BSD License)
+========================================
+
+Copyright (c) 2015, Yahoo! Inc. All rights reserved.
+----------------------------------------------------
+
+Redistribution and use of this software in source and binary forms, with or
+without modification, are permitted provided that the following conditions are
+met:
+
+  * Redistributions of source code must retain the above copyright notice, this
+    list of conditions and the following disclaimer.
+  * Redistributions in binary form must reproduce the above copyright notice,
+    this list of conditions and the following disclaimer in the documentation
+    and/or other materials provided with the distribution.
+  * Neither the name of Yahoo! Inc. nor the names of YUI's contributors may be
+    used to endorse or promote products derived from this software without
+    specific prior written permission of Yahoo! Inc.
+
+THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
+ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
+ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
+LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
+ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
+SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
diff --git a/igv_component/node_modules/hoist-non-react-statics/README.md b/igv_component/node_modules/hoist-non-react-statics/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..24ea68871474055d0afb0064a728cc4420670095
--- /dev/null
+++ b/igv_component/node_modules/hoist-non-react-statics/README.md
@@ -0,0 +1,55 @@
+# hoist-non-react-statics
+
+[![NPM version](https://badge.fury.io/js/hoist-non-react-statics.svg)](http://badge.fury.io/js/hoist-non-react-statics)
+[![Build Status](https://img.shields.io/travis/mridgway/hoist-non-react-statics.svg)](https://travis-ci.org/mridgway/hoist-non-react-statics)
+[![Coverage Status](https://img.shields.io/coveralls/mridgway/hoist-non-react-statics.svg)](https://coveralls.io/r/mridgway/hoist-non-react-statics?branch=master)
+[![Dependency Status](https://img.shields.io/david/mridgway/hoist-non-react-statics.svg)](https://david-dm.org/mridgway/hoist-non-react-statics)
+[![devDependency Status](https://img.shields.io/david/dev/mridgway/hoist-non-react-statics.svg)](https://david-dm.org/mridgway/hoist-non-react-statics#info=devDependencies)
+
+Copies non-react specific statics from a child component to a parent component. 
+Similar to `Object.assign`, but with React static keywords blacklisted from
+being overridden.
+
+```bash
+$ npm install --save hoist-non-react-statics
+```
+
+## Usage
+
+```js
+import hoistNonReactStatics from 'hoist-non-react-statics';
+
+hoistNonReactStatics(targetComponent, sourceComponent);
+```
+
+If you have specific statics that you don't want to be hoisted, you can also pass a third parameter to exclude them:
+
+```js
+hoistNonReactStatics(targetComponent, sourceComponent, { myStatic: true, myOtherStatic: true });
+```
+
+## What does this module do?
+
+See this [explanation](https://facebook.github.io/react/docs/higher-order-components.html#static-methods-must-be-copied-over) from the React docs.
+
+## Compatible React Versions
+
+Please use latest 3.x. Versions prior to 3.x will not support ForwardRefs.
+
+| hoist-non-react-statics Version | Compatible React Version |
+|--------------------------|-------------------------------|
+| 3.x | 0.13-16.x With ForwardRef Support |
+| 2.x | 0.13-16.x Without ForwardRef Support |
+| 1.x | 0.13-16.2 |
+
+## Browser Support
+
+This package uses `Object.defineProperty` which has a broken implementation in IE8. In order to use this package in IE8, you will need a polyfill that fixes this method.
+
+## License
+This software is free to use under the Yahoo Inc. BSD license.
+See the [LICENSE file][] for license text and copyright information.
+
+[LICENSE file]: https://github.com/mridgway/hoist-non-react-statics/blob/master/LICENSE.md
+
+Third-party open source code used are listed in our [package.json file]( https://github.com/mridgway/hoist-non-react-statics/blob/master/package.json).
diff --git a/igv_component/node_modules/hoist-non-react-statics/dist/hoist-non-react-statics.cjs.js b/igv_component/node_modules/hoist-non-react-statics/dist/hoist-non-react-statics.cjs.js
new file mode 100644
index 0000000000000000000000000000000000000000..60f9c4b96b194cd471b821a62c1b30d3b7bb6e1e
--- /dev/null
+++ b/igv_component/node_modules/hoist-non-react-statics/dist/hoist-non-react-statics.cjs.js
@@ -0,0 +1,103 @@
+'use strict';
+
+var reactIs = require('react-is');
+
+/**
+ * Copyright 2015, Yahoo! Inc.
+ * Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
+ */
+var REACT_STATICS = {
+  childContextTypes: true,
+  contextType: true,
+  contextTypes: true,
+  defaultProps: true,
+  displayName: true,
+  getDefaultProps: true,
+  getDerivedStateFromError: true,
+  getDerivedStateFromProps: true,
+  mixins: true,
+  propTypes: true,
+  type: true
+};
+var KNOWN_STATICS = {
+  name: true,
+  length: true,
+  prototype: true,
+  caller: true,
+  callee: true,
+  arguments: true,
+  arity: true
+};
+var FORWARD_REF_STATICS = {
+  '$$typeof': true,
+  render: true,
+  defaultProps: true,
+  displayName: true,
+  propTypes: true
+};
+var MEMO_STATICS = {
+  '$$typeof': true,
+  compare: true,
+  defaultProps: true,
+  displayName: true,
+  propTypes: true,
+  type: true
+};
+var TYPE_STATICS = {};
+TYPE_STATICS[reactIs.ForwardRef] = FORWARD_REF_STATICS;
+TYPE_STATICS[reactIs.Memo] = MEMO_STATICS;
+
+function getStatics(component) {
+  // React v16.11 and below
+  if (reactIs.isMemo(component)) {
+    return MEMO_STATICS;
+  } // React v16.12 and above
+
+
+  return TYPE_STATICS[component['$$typeof']] || REACT_STATICS;
+}
+
+var defineProperty = Object.defineProperty;
+var getOwnPropertyNames = Object.getOwnPropertyNames;
+var getOwnPropertySymbols = Object.getOwnPropertySymbols;
+var getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
+var getPrototypeOf = Object.getPrototypeOf;
+var objectPrototype = Object.prototype;
+function hoistNonReactStatics(targetComponent, sourceComponent, blacklist) {
+  if (typeof sourceComponent !== 'string') {
+    // don't hoist over string (html) components
+    if (objectPrototype) {
+      var inheritedComponent = getPrototypeOf(sourceComponent);
+
+      if (inheritedComponent && inheritedComponent !== objectPrototype) {
+        hoistNonReactStatics(targetComponent, inheritedComponent, blacklist);
+      }
+    }
+
+    var keys = getOwnPropertyNames(sourceComponent);
+
+    if (getOwnPropertySymbols) {
+      keys = keys.concat(getOwnPropertySymbols(sourceComponent));
+    }
+
+    var targetStatics = getStatics(targetComponent);
+    var sourceStatics = getStatics(sourceComponent);
+
+    for (var i = 0; i < keys.length; ++i) {
+      var key = keys[i];
+
+      if (!KNOWN_STATICS[key] && !(blacklist && blacklist[key]) && !(sourceStatics && sourceStatics[key]) && !(targetStatics && targetStatics[key])) {
+        var descriptor = getOwnPropertyDescriptor(sourceComponent, key);
+
+        try {
+          // Avoid failures from read-only properties
+          defineProperty(targetComponent, key, descriptor);
+        } catch (e) {}
+      }
+    }
+  }
+
+  return targetComponent;
+}
+
+module.exports = hoistNonReactStatics;
diff --git a/igv_component/node_modules/hoist-non-react-statics/dist/hoist-non-react-statics.js b/igv_component/node_modules/hoist-non-react-statics/dist/hoist-non-react-statics.js
new file mode 100644
index 0000000000000000000000000000000000000000..c6d59c7830cde67b371f748a8d6b4715e6227ff2
--- /dev/null
+++ b/igv_component/node_modules/hoist-non-react-statics/dist/hoist-non-react-statics.js
@@ -0,0 +1,449 @@
+(function (global, factory) {
+	typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+	typeof define === 'function' && define.amd ? define(factory) :
+	(global = global || self, global.hoistNonReactStatics = factory());
+}(this, (function () { 'use strict';
+
+	function unwrapExports (x) {
+		return x && x.__esModule && Object.prototype.hasOwnProperty.call(x, 'default') ? x['default'] : x;
+	}
+
+	function createCommonjsModule(fn, module) {
+		return module = { exports: {} }, fn(module, module.exports), module.exports;
+	}
+
+	var reactIs_production_min = createCommonjsModule(function (module, exports) {
+	Object.defineProperty(exports,"__esModule",{value:!0});
+	var b="function"===typeof Symbol&&Symbol.for,c=b?Symbol.for("react.element"):60103,d=b?Symbol.for("react.portal"):60106,e=b?Symbol.for("react.fragment"):60107,f=b?Symbol.for("react.strict_mode"):60108,g=b?Symbol.for("react.profiler"):60114,h=b?Symbol.for("react.provider"):60109,k=b?Symbol.for("react.context"):60110,l=b?Symbol.for("react.async_mode"):60111,m=b?Symbol.for("react.concurrent_mode"):60111,n=b?Symbol.for("react.forward_ref"):60112,p=b?Symbol.for("react.suspense"):60113,q=b?Symbol.for("react.suspense_list"):
+	60120,r=b?Symbol.for("react.memo"):60115,t=b?Symbol.for("react.lazy"):60116,v=b?Symbol.for("react.fundamental"):60117,w=b?Symbol.for("react.responder"):60118,x=b?Symbol.for("react.scope"):60119;function y(a){if("object"===typeof a&&null!==a){var u=a.$$typeof;switch(u){case c:switch(a=a.type,a){case l:case m:case e:case g:case f:case p:return a;default:switch(a=a&&a.$$typeof,a){case k:case n:case t:case r:case h:return a;default:return u}}case d:return u}}}function z(a){return y(a)===m}
+	exports.typeOf=y;exports.AsyncMode=l;exports.ConcurrentMode=m;exports.ContextConsumer=k;exports.ContextProvider=h;exports.Element=c;exports.ForwardRef=n;exports.Fragment=e;exports.Lazy=t;exports.Memo=r;exports.Portal=d;exports.Profiler=g;exports.StrictMode=f;exports.Suspense=p;
+	exports.isValidElementType=function(a){return "string"===typeof a||"function"===typeof a||a===e||a===m||a===g||a===f||a===p||a===q||"object"===typeof a&&null!==a&&(a.$$typeof===t||a.$$typeof===r||a.$$typeof===h||a.$$typeof===k||a.$$typeof===n||a.$$typeof===v||a.$$typeof===w||a.$$typeof===x)};exports.isAsyncMode=function(a){return z(a)||y(a)===l};exports.isConcurrentMode=z;exports.isContextConsumer=function(a){return y(a)===k};exports.isContextProvider=function(a){return y(a)===h};
+	exports.isElement=function(a){return "object"===typeof a&&null!==a&&a.$$typeof===c};exports.isForwardRef=function(a){return y(a)===n};exports.isFragment=function(a){return y(a)===e};exports.isLazy=function(a){return y(a)===t};exports.isMemo=function(a){return y(a)===r};exports.isPortal=function(a){return y(a)===d};exports.isProfiler=function(a){return y(a)===g};exports.isStrictMode=function(a){return y(a)===f};exports.isSuspense=function(a){return y(a)===p};
+	});
+
+	unwrapExports(reactIs_production_min);
+	var reactIs_production_min_1 = reactIs_production_min.typeOf;
+	var reactIs_production_min_2 = reactIs_production_min.AsyncMode;
+	var reactIs_production_min_3 = reactIs_production_min.ConcurrentMode;
+	var reactIs_production_min_4 = reactIs_production_min.ContextConsumer;
+	var reactIs_production_min_5 = reactIs_production_min.ContextProvider;
+	var reactIs_production_min_6 = reactIs_production_min.Element;
+	var reactIs_production_min_7 = reactIs_production_min.ForwardRef;
+	var reactIs_production_min_8 = reactIs_production_min.Fragment;
+	var reactIs_production_min_9 = reactIs_production_min.Lazy;
+	var reactIs_production_min_10 = reactIs_production_min.Memo;
+	var reactIs_production_min_11 = reactIs_production_min.Portal;
+	var reactIs_production_min_12 = reactIs_production_min.Profiler;
+	var reactIs_production_min_13 = reactIs_production_min.StrictMode;
+	var reactIs_production_min_14 = reactIs_production_min.Suspense;
+	var reactIs_production_min_15 = reactIs_production_min.isValidElementType;
+	var reactIs_production_min_16 = reactIs_production_min.isAsyncMode;
+	var reactIs_production_min_17 = reactIs_production_min.isConcurrentMode;
+	var reactIs_production_min_18 = reactIs_production_min.isContextConsumer;
+	var reactIs_production_min_19 = reactIs_production_min.isContextProvider;
+	var reactIs_production_min_20 = reactIs_production_min.isElement;
+	var reactIs_production_min_21 = reactIs_production_min.isForwardRef;
+	var reactIs_production_min_22 = reactIs_production_min.isFragment;
+	var reactIs_production_min_23 = reactIs_production_min.isLazy;
+	var reactIs_production_min_24 = reactIs_production_min.isMemo;
+	var reactIs_production_min_25 = reactIs_production_min.isPortal;
+	var reactIs_production_min_26 = reactIs_production_min.isProfiler;
+	var reactIs_production_min_27 = reactIs_production_min.isStrictMode;
+	var reactIs_production_min_28 = reactIs_production_min.isSuspense;
+
+	var reactIs_development = createCommonjsModule(function (module, exports) {
+
+
+
+	if (process.env.NODE_ENV !== "production") {
+	  (function() {
+
+	Object.defineProperty(exports, '__esModule', { value: true });
+
+	// The Symbol used to tag the ReactElement-like types. If there is no native Symbol
+	// nor polyfill, then a plain number is used for performance.
+	var hasSymbol = typeof Symbol === 'function' && Symbol.for;
+	var REACT_ELEMENT_TYPE = hasSymbol ? Symbol.for('react.element') : 0xeac7;
+	var REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca;
+	var REACT_FRAGMENT_TYPE = hasSymbol ? Symbol.for('react.fragment') : 0xeacb;
+	var REACT_STRICT_MODE_TYPE = hasSymbol ? Symbol.for('react.strict_mode') : 0xeacc;
+	var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for('react.profiler') : 0xead2;
+	var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for('react.provider') : 0xeacd;
+	var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for('react.context') : 0xeace; // TODO: We don't use AsyncMode or ConcurrentMode anymore. They were temporary
+	// (unstable) APIs that have been removed. Can we remove the symbols?
+
+	var REACT_ASYNC_MODE_TYPE = hasSymbol ? Symbol.for('react.async_mode') : 0xeacf;
+	var REACT_CONCURRENT_MODE_TYPE = hasSymbol ? Symbol.for('react.concurrent_mode') : 0xeacf;
+	var REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for('react.forward_ref') : 0xead0;
+	var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for('react.suspense') : 0xead1;
+	var REACT_SUSPENSE_LIST_TYPE = hasSymbol ? Symbol.for('react.suspense_list') : 0xead8;
+	var REACT_MEMO_TYPE = hasSymbol ? Symbol.for('react.memo') : 0xead3;
+	var REACT_LAZY_TYPE = hasSymbol ? Symbol.for('react.lazy') : 0xead4;
+	var REACT_FUNDAMENTAL_TYPE = hasSymbol ? Symbol.for('react.fundamental') : 0xead5;
+	var REACT_RESPONDER_TYPE = hasSymbol ? Symbol.for('react.responder') : 0xead6;
+	var REACT_SCOPE_TYPE = hasSymbol ? Symbol.for('react.scope') : 0xead7;
+
+	function isValidElementType(type) {
+	  return typeof type === 'string' || typeof type === 'function' || // Note: its typeof might be other than 'symbol' or 'number' if it's a polyfill.
+	  type === REACT_FRAGMENT_TYPE || type === REACT_CONCURRENT_MODE_TYPE || type === REACT_PROFILER_TYPE || type === REACT_STRICT_MODE_TYPE || type === REACT_SUSPENSE_TYPE || type === REACT_SUSPENSE_LIST_TYPE || typeof type === 'object' && type !== null && (type.$$typeof === REACT_LAZY_TYPE || type.$$typeof === REACT_MEMO_TYPE || type.$$typeof === REACT_PROVIDER_TYPE || type.$$typeof === REACT_CONTEXT_TYPE || type.$$typeof === REACT_FORWARD_REF_TYPE || type.$$typeof === REACT_FUNDAMENTAL_TYPE || type.$$typeof === REACT_RESPONDER_TYPE || type.$$typeof === REACT_SCOPE_TYPE);
+	}
+
+	/**
+	 * Forked from fbjs/warning:
+	 * https://github.com/facebook/fbjs/blob/e66ba20ad5be433eb54423f2b097d829324d9de6/packages/fbjs/src/__forks__/warning.js
+	 *
+	 * Only change is we use console.warn instead of console.error,
+	 * and do nothing when 'console' is not supported.
+	 * This really simplifies the code.
+	 * ---
+	 * Similar to invariant but only logs a warning if the condition is not met.
+	 * This can be used to log issues in development environments in critical
+	 * paths. Removing the logging code for production environments will keep the
+	 * same logic and follow the same code paths.
+	 */
+	var lowPriorityWarningWithoutStack = function () {};
+
+	{
+	  var printWarning = function (format) {
+	    for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+	      args[_key - 1] = arguments[_key];
+	    }
+
+	    var argIndex = 0;
+	    var message = 'Warning: ' + format.replace(/%s/g, function () {
+	      return args[argIndex++];
+	    });
+
+	    if (typeof console !== 'undefined') {
+	      console.warn(message);
+	    }
+
+	    try {
+	      // --- Welcome to debugging React ---
+	      // This error was thrown as a convenience so that you can use this stack
+	      // to find the callsite that caused this warning to fire.
+	      throw new Error(message);
+	    } catch (x) {}
+	  };
+
+	  lowPriorityWarningWithoutStack = function (condition, format) {
+	    if (format === undefined) {
+	      throw new Error('`lowPriorityWarningWithoutStack(condition, format, ...args)` requires a warning ' + 'message argument');
+	    }
+
+	    if (!condition) {
+	      for (var _len2 = arguments.length, args = new Array(_len2 > 2 ? _len2 - 2 : 0), _key2 = 2; _key2 < _len2; _key2++) {
+	        args[_key2 - 2] = arguments[_key2];
+	      }
+
+	      printWarning.apply(void 0, [format].concat(args));
+	    }
+	  };
+	}
+
+	var lowPriorityWarningWithoutStack$1 = lowPriorityWarningWithoutStack;
+
+	function typeOf(object) {
+	  if (typeof object === 'object' && object !== null) {
+	    var $$typeof = object.$$typeof;
+
+	    switch ($$typeof) {
+	      case REACT_ELEMENT_TYPE:
+	        var type = object.type;
+
+	        switch (type) {
+	          case REACT_ASYNC_MODE_TYPE:
+	          case REACT_CONCURRENT_MODE_TYPE:
+	          case REACT_FRAGMENT_TYPE:
+	          case REACT_PROFILER_TYPE:
+	          case REACT_STRICT_MODE_TYPE:
+	          case REACT_SUSPENSE_TYPE:
+	            return type;
+
+	          default:
+	            var $$typeofType = type && type.$$typeof;
+
+	            switch ($$typeofType) {
+	              case REACT_CONTEXT_TYPE:
+	              case REACT_FORWARD_REF_TYPE:
+	              case REACT_LAZY_TYPE:
+	              case REACT_MEMO_TYPE:
+	              case REACT_PROVIDER_TYPE:
+	                return $$typeofType;
+
+	              default:
+	                return $$typeof;
+	            }
+
+	        }
+
+	      case REACT_PORTAL_TYPE:
+	        return $$typeof;
+	    }
+	  }
+
+	  return undefined;
+	} // AsyncMode is deprecated along with isAsyncMode
+
+	var AsyncMode = REACT_ASYNC_MODE_TYPE;
+	var ConcurrentMode = REACT_CONCURRENT_MODE_TYPE;
+	var ContextConsumer = REACT_CONTEXT_TYPE;
+	var ContextProvider = REACT_PROVIDER_TYPE;
+	var Element = REACT_ELEMENT_TYPE;
+	var ForwardRef = REACT_FORWARD_REF_TYPE;
+	var Fragment = REACT_FRAGMENT_TYPE;
+	var Lazy = REACT_LAZY_TYPE;
+	var Memo = REACT_MEMO_TYPE;
+	var Portal = REACT_PORTAL_TYPE;
+	var Profiler = REACT_PROFILER_TYPE;
+	var StrictMode = REACT_STRICT_MODE_TYPE;
+	var Suspense = REACT_SUSPENSE_TYPE;
+	var hasWarnedAboutDeprecatedIsAsyncMode = false; // AsyncMode should be deprecated
+
+	function isAsyncMode(object) {
+	  {
+	    if (!hasWarnedAboutDeprecatedIsAsyncMode) {
+	      hasWarnedAboutDeprecatedIsAsyncMode = true;
+	      lowPriorityWarningWithoutStack$1(false, 'The ReactIs.isAsyncMode() alias has been deprecated, ' + 'and will be removed in React 17+. Update your code to use ' + 'ReactIs.isConcurrentMode() instead. It has the exact same API.');
+	    }
+	  }
+
+	  return isConcurrentMode(object) || typeOf(object) === REACT_ASYNC_MODE_TYPE;
+	}
+	function isConcurrentMode(object) {
+	  return typeOf(object) === REACT_CONCURRENT_MODE_TYPE;
+	}
+	function isContextConsumer(object) {
+	  return typeOf(object) === REACT_CONTEXT_TYPE;
+	}
+	function isContextProvider(object) {
+	  return typeOf(object) === REACT_PROVIDER_TYPE;
+	}
+	function isElement(object) {
+	  return typeof object === 'object' && object !== null && object.$$typeof === REACT_ELEMENT_TYPE;
+	}
+	function isForwardRef(object) {
+	  return typeOf(object) === REACT_FORWARD_REF_TYPE;
+	}
+	function isFragment(object) {
+	  return typeOf(object) === REACT_FRAGMENT_TYPE;
+	}
+	function isLazy(object) {
+	  return typeOf(object) === REACT_LAZY_TYPE;
+	}
+	function isMemo(object) {
+	  return typeOf(object) === REACT_MEMO_TYPE;
+	}
+	function isPortal(object) {
+	  return typeOf(object) === REACT_PORTAL_TYPE;
+	}
+	function isProfiler(object) {
+	  return typeOf(object) === REACT_PROFILER_TYPE;
+	}
+	function isStrictMode(object) {
+	  return typeOf(object) === REACT_STRICT_MODE_TYPE;
+	}
+	function isSuspense(object) {
+	  return typeOf(object) === REACT_SUSPENSE_TYPE;
+	}
+
+	exports.typeOf = typeOf;
+	exports.AsyncMode = AsyncMode;
+	exports.ConcurrentMode = ConcurrentMode;
+	exports.ContextConsumer = ContextConsumer;
+	exports.ContextProvider = ContextProvider;
+	exports.Element = Element;
+	exports.ForwardRef = ForwardRef;
+	exports.Fragment = Fragment;
+	exports.Lazy = Lazy;
+	exports.Memo = Memo;
+	exports.Portal = Portal;
+	exports.Profiler = Profiler;
+	exports.StrictMode = StrictMode;
+	exports.Suspense = Suspense;
+	exports.isValidElementType = isValidElementType;
+	exports.isAsyncMode = isAsyncMode;
+	exports.isConcurrentMode = isConcurrentMode;
+	exports.isContextConsumer = isContextConsumer;
+	exports.isContextProvider = isContextProvider;
+	exports.isElement = isElement;
+	exports.isForwardRef = isForwardRef;
+	exports.isFragment = isFragment;
+	exports.isLazy = isLazy;
+	exports.isMemo = isMemo;
+	exports.isPortal = isPortal;
+	exports.isProfiler = isProfiler;
+	exports.isStrictMode = isStrictMode;
+	exports.isSuspense = isSuspense;
+	  })();
+	}
+	});
+
+	unwrapExports(reactIs_development);
+	var reactIs_development_1 = reactIs_development.typeOf;
+	var reactIs_development_2 = reactIs_development.AsyncMode;
+	var reactIs_development_3 = reactIs_development.ConcurrentMode;
+	var reactIs_development_4 = reactIs_development.ContextConsumer;
+	var reactIs_development_5 = reactIs_development.ContextProvider;
+	var reactIs_development_6 = reactIs_development.Element;
+	var reactIs_development_7 = reactIs_development.ForwardRef;
+	var reactIs_development_8 = reactIs_development.Fragment;
+	var reactIs_development_9 = reactIs_development.Lazy;
+	var reactIs_development_10 = reactIs_development.Memo;
+	var reactIs_development_11 = reactIs_development.Portal;
+	var reactIs_development_12 = reactIs_development.Profiler;
+	var reactIs_development_13 = reactIs_development.StrictMode;
+	var reactIs_development_14 = reactIs_development.Suspense;
+	var reactIs_development_15 = reactIs_development.isValidElementType;
+	var reactIs_development_16 = reactIs_development.isAsyncMode;
+	var reactIs_development_17 = reactIs_development.isConcurrentMode;
+	var reactIs_development_18 = reactIs_development.isContextConsumer;
+	var reactIs_development_19 = reactIs_development.isContextProvider;
+	var reactIs_development_20 = reactIs_development.isElement;
+	var reactIs_development_21 = reactIs_development.isForwardRef;
+	var reactIs_development_22 = reactIs_development.isFragment;
+	var reactIs_development_23 = reactIs_development.isLazy;
+	var reactIs_development_24 = reactIs_development.isMemo;
+	var reactIs_development_25 = reactIs_development.isPortal;
+	var reactIs_development_26 = reactIs_development.isProfiler;
+	var reactIs_development_27 = reactIs_development.isStrictMode;
+	var reactIs_development_28 = reactIs_development.isSuspense;
+
+	var reactIs = createCommonjsModule(function (module) {
+
+	if (process.env.NODE_ENV === 'production') {
+	  module.exports = reactIs_production_min;
+	} else {
+	  module.exports = reactIs_development;
+	}
+	});
+	var reactIs_1 = reactIs.typeOf;
+	var reactIs_2 = reactIs.AsyncMode;
+	var reactIs_3 = reactIs.ConcurrentMode;
+	var reactIs_4 = reactIs.ContextConsumer;
+	var reactIs_5 = reactIs.ContextProvider;
+	var reactIs_6 = reactIs.Element;
+	var reactIs_7 = reactIs.ForwardRef;
+	var reactIs_8 = reactIs.Fragment;
+	var reactIs_9 = reactIs.Lazy;
+	var reactIs_10 = reactIs.Memo;
+	var reactIs_11 = reactIs.Portal;
+	var reactIs_12 = reactIs.Profiler;
+	var reactIs_13 = reactIs.StrictMode;
+	var reactIs_14 = reactIs.Suspense;
+	var reactIs_15 = reactIs.isValidElementType;
+	var reactIs_16 = reactIs.isAsyncMode;
+	var reactIs_17 = reactIs.isConcurrentMode;
+	var reactIs_18 = reactIs.isContextConsumer;
+	var reactIs_19 = reactIs.isContextProvider;
+	var reactIs_20 = reactIs.isElement;
+	var reactIs_21 = reactIs.isForwardRef;
+	var reactIs_22 = reactIs.isFragment;
+	var reactIs_23 = reactIs.isLazy;
+	var reactIs_24 = reactIs.isMemo;
+	var reactIs_25 = reactIs.isPortal;
+	var reactIs_26 = reactIs.isProfiler;
+	var reactIs_27 = reactIs.isStrictMode;
+	var reactIs_28 = reactIs.isSuspense;
+
+	/**
+	 * Copyright 2015, Yahoo! Inc.
+	 * Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
+	 */
+	var REACT_STATICS = {
+	  childContextTypes: true,
+	  contextType: true,
+	  contextTypes: true,
+	  defaultProps: true,
+	  displayName: true,
+	  getDefaultProps: true,
+	  getDerivedStateFromError: true,
+	  getDerivedStateFromProps: true,
+	  mixins: true,
+	  propTypes: true,
+	  type: true
+	};
+	var KNOWN_STATICS = {
+	  name: true,
+	  length: true,
+	  prototype: true,
+	  caller: true,
+	  callee: true,
+	  arguments: true,
+	  arity: true
+	};
+	var FORWARD_REF_STATICS = {
+	  '$$typeof': true,
+	  render: true,
+	  defaultProps: true,
+	  displayName: true,
+	  propTypes: true
+	};
+	var MEMO_STATICS = {
+	  '$$typeof': true,
+	  compare: true,
+	  defaultProps: true,
+	  displayName: true,
+	  propTypes: true,
+	  type: true
+	};
+	var TYPE_STATICS = {};
+	TYPE_STATICS[reactIs_7] = FORWARD_REF_STATICS;
+	TYPE_STATICS[reactIs_10] = MEMO_STATICS;
+
+	function getStatics(component) {
+	  // React v16.11 and below
+	  if (reactIs_24(component)) {
+	    return MEMO_STATICS;
+	  } // React v16.12 and above
+
+
+	  return TYPE_STATICS[component['$$typeof']] || REACT_STATICS;
+	}
+
+	var defineProperty = Object.defineProperty;
+	var getOwnPropertyNames = Object.getOwnPropertyNames;
+	var getOwnPropertySymbols = Object.getOwnPropertySymbols;
+	var getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
+	var getPrototypeOf = Object.getPrototypeOf;
+	var objectPrototype = Object.prototype;
+	function hoistNonReactStatics(targetComponent, sourceComponent, blacklist) {
+	  if (typeof sourceComponent !== 'string') {
+	    // don't hoist over string (html) components
+	    if (objectPrototype) {
+	      var inheritedComponent = getPrototypeOf(sourceComponent);
+
+	      if (inheritedComponent && inheritedComponent !== objectPrototype) {
+	        hoistNonReactStatics(targetComponent, inheritedComponent, blacklist);
+	      }
+	    }
+
+	    var keys = getOwnPropertyNames(sourceComponent);
+
+	    if (getOwnPropertySymbols) {
+	      keys = keys.concat(getOwnPropertySymbols(sourceComponent));
+	    }
+
+	    var targetStatics = getStatics(targetComponent);
+	    var sourceStatics = getStatics(sourceComponent);
+
+	    for (var i = 0; i < keys.length; ++i) {
+	      var key = keys[i];
+
+	      if (!KNOWN_STATICS[key] && !(blacklist && blacklist[key]) && !(sourceStatics && sourceStatics[key]) && !(targetStatics && targetStatics[key])) {
+	        var descriptor = getOwnPropertyDescriptor(sourceComponent, key);
+
+	        try {
+	          // Avoid failures from read-only properties
+	          defineProperty(targetComponent, key, descriptor);
+	        } catch (e) {}
+	      }
+	    }
+	  }
+
+	  return targetComponent;
+	}
+
+	return hoistNonReactStatics;
+
+})));
diff --git a/igv_component/node_modules/hoist-non-react-statics/dist/hoist-non-react-statics.min.js b/igv_component/node_modules/hoist-non-react-statics/dist/hoist-non-react-statics.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..2883e2492fb4237d21953fe8fc029d3071ae0afa
--- /dev/null
+++ b/igv_component/node_modules/hoist-non-react-statics/dist/hoist-non-react-statics.min.js
@@ -0,0 +1 @@
+!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e=e||self).hoistNonReactStatics=t()}(this,(function(){"use strict";function e(e){return e&&e.__esModule&&Object.prototype.hasOwnProperty.call(e,"default")?e.default:e}function t(e,t){return e(t={exports:{}},t.exports),t.exports}var r=t((function(e,t){Object.defineProperty(t,"__esModule",{value:!0});var r="function"==typeof Symbol&&Symbol.for,o=r?Symbol.for("react.element"):60103,n=r?Symbol.for("react.portal"):60106,c=r?Symbol.for("react.fragment"):60107,a=r?Symbol.for("react.strict_mode"):60108,f=r?Symbol.for("react.profiler"):60114,s=r?Symbol.for("react.provider"):60109,i=r?Symbol.for("react.context"):60110,u=r?Symbol.for("react.async_mode"):60111,y=r?Symbol.for("react.concurrent_mode"):60111,l=r?Symbol.for("react.forward_ref"):60112,p=r?Symbol.for("react.suspense"):60113,m=r?Symbol.for("react.suspense_list"):60120,d=r?Symbol.for("react.memo"):60115,b=r?Symbol.for("react.lazy"):60116,S=r?Symbol.for("react.fundamental"):60117,$=r?Symbol.for("react.responder"):60118,v=r?Symbol.for("react.scope"):60119;function g(e){if("object"==typeof e&&null!==e){var t=e.$$typeof;switch(t){case o:switch(e=e.type){case u:case y:case c:case f:case a:case p:return e;default:switch(e=e&&e.$$typeof){case i:case l:case b:case d:case s:return e;default:return t}}case n:return t}}}function P(e){return g(e)===y}t.typeOf=g,t.AsyncMode=u,t.ConcurrentMode=y,t.ContextConsumer=i,t.ContextProvider=s,t.Element=o,t.ForwardRef=l,t.Fragment=c,t.Lazy=b,t.Memo=d,t.Portal=n,t.Profiler=f,t.StrictMode=a,t.Suspense=p,t.isValidElementType=function(e){return"string"==typeof e||"function"==typeof e||e===c||e===y||e===f||e===a||e===p||e===m||"object"==typeof e&&null!==e&&(e.$$typeof===b||e.$$typeof===d||e.$$typeof===s||e.$$typeof===i||e.$$typeof===l||e.$$typeof===S||e.$$typeof===$||e.$$typeof===v)},t.isAsyncMode=function(e){return P(e)||g(e)===u},t.isConcurrentMode=P,t.isContextConsumer=function(e){return g(e)===i},t.isContextProvider=function(e){return g(e)===s},t.isElement=function(e){return"object"==typeof e&&null!==e&&e.$$typeof===o},t.isForwardRef=function(e){return g(e)===l},t.isFragment=function(e){return g(e)===c},t.isLazy=function(e){return g(e)===b},t.isMemo=function(e){return g(e)===d},t.isPortal=function(e){return g(e)===n},t.isProfiler=function(e){return g(e)===f},t.isStrictMode=function(e){return g(e)===a},t.isSuspense=function(e){return g(e)===p}}));e(r);var o=t((function(e,t){"production"!==process.env.NODE_ENV&&function(){Object.defineProperty(t,"__esModule",{value:!0});var e="function"==typeof Symbol&&Symbol.for,r=e?Symbol.for("react.element"):60103,o=e?Symbol.for("react.portal"):60106,n=e?Symbol.for("react.fragment"):60107,c=e?Symbol.for("react.strict_mode"):60108,a=e?Symbol.for("react.profiler"):60114,f=e?Symbol.for("react.provider"):60109,s=e?Symbol.for("react.context"):60110,i=e?Symbol.for("react.async_mode"):60111,u=e?Symbol.for("react.concurrent_mode"):60111,y=e?Symbol.for("react.forward_ref"):60112,l=e?Symbol.for("react.suspense"):60113,p=e?Symbol.for("react.suspense_list"):60120,m=e?Symbol.for("react.memo"):60115,d=e?Symbol.for("react.lazy"):60116,b=e?Symbol.for("react.fundamental"):60117,S=e?Symbol.for("react.responder"):60118,$=e?Symbol.for("react.scope"):60119;var v=function(e){for(var t=arguments.length,r=Array(t>1?t-1:0),o=1;t>o;o++)r[o-1]=arguments[o];var n=0,c="Warning: "+e.replace(/%s/g,(function(){return r[n++]}));void 0!==console&&console.warn(c);try{throw Error(c)}catch(e){}},g=function(e,t){if(void 0===t)throw Error("`lowPriorityWarningWithoutStack(condition, format, ...args)` requires a warning message argument");if(!e){for(var r=arguments.length,o=Array(r>2?r-2:0),n=2;r>n;n++)o[n-2]=arguments[n];v.apply(void 0,[t].concat(o))}};function P(e){if("object"==typeof e&&null!==e){var t=e.$$typeof;switch(t){case r:var p=e.type;switch(p){case i:case u:case n:case a:case c:case l:return p;default:var b=p&&p.$$typeof;switch(b){case s:case y:case d:case m:case f:return b;default:return t}}case o:return t}}}var h=i,w=u,M=s,x=f,C=r,O=y,_=n,j=d,E=m,F=o,N=a,R=c,T=l,A=!1;function z(e){return P(e)===u}t.typeOf=P,t.AsyncMode=h,t.ConcurrentMode=w,t.ContextConsumer=M,t.ContextProvider=x,t.Element=C,t.ForwardRef=O,t.Fragment=_,t.Lazy=j,t.Memo=E,t.Portal=F,t.Profiler=N,t.StrictMode=R,t.Suspense=T,t.isValidElementType=function(e){return"string"==typeof e||"function"==typeof e||e===n||e===u||e===a||e===c||e===l||e===p||"object"==typeof e&&null!==e&&(e.$$typeof===d||e.$$typeof===m||e.$$typeof===f||e.$$typeof===s||e.$$typeof===y||e.$$typeof===b||e.$$typeof===S||e.$$typeof===$)},t.isAsyncMode=function(e){return A||(A=!0,g(!1,"The ReactIs.isAsyncMode() alias has been deprecated, and will be removed in React 17+. 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diff --git a/igv_component/node_modules/hoist-non-react-statics/package.json b/igv_component/node_modules/hoist-non-react-statics/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..f5ec09d5d994c5ad155568f52117bf3e76fcdd7a
--- /dev/null
+++ b/igv_component/node_modules/hoist-non-react-statics/package.json
@@ -0,0 +1,55 @@
+{
+  "name": "hoist-non-react-statics",
+  "version": "3.3.2",
+  "description": "Copies non-react specific statics from a child component to a parent component",
+  "main": "dist/hoist-non-react-statics.cjs.js",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/mridgway/hoist-non-react-statics.git"
+  },
+  "files": [
+    "src",
+    "dist",
+    "index.d.ts"
+  ],
+  "scripts": {
+    "lint": "eslint src",
+    "build": "rimraf dist && rollup -c",
+    "test": "nyc mocha tests/unit/ --recursive --reporter spec --require=@babel/register",
+    "coverage": "nyc report --reporter=text-lcov | coveralls",
+    "prepublish": "npm test"
+  },
+  "author": "Michael Ridgway <mcridgway@gmail.com>",
+  "license": "BSD-3-Clause",
+  "dependencies": {
+    "react-is": "^16.7.0"
+  },
+  "devDependencies": {
+    "@babel/core": "^7.5.0",
+    "@babel/plugin-proposal-class-properties": "^7.5.0",
+    "@babel/preset-env": "^7.5.0",
+    "@babel/preset-react": "^7.0.0",
+    "@babel/register": "^7.4.4",
+    "chai": "^4.2.0",
+    "coveralls": "^2.11.1",
+    "create-react-class": "^15.5.3",
+    "eslint": "^4.13.1",
+    "mocha": "^6.1.4",
+    "nyc": "^14.1.1",
+    "pre-commit": "^1.0.7",
+    "prop-types": "^15.6.2",
+    "react": "^16.7.0",
+    "rimraf": "^2.6.2",
+    "rollup": "^1.16.6",
+    "rollup-plugin-babel": "^4.3.3",
+    "rollup-plugin-commonjs": "^10.0.1",
+    "rollup-plugin-node-resolve": "^5.2.0",
+    "rollup-plugin-terser": "^5.1.1"
+  },
+  "publishConfig": {
+    "registry": "https://registry.npmjs.org/"
+  },
+  "keywords": [
+    "react"
+  ]
+}
diff --git a/igv_component/node_modules/hoist-non-react-statics/src/index.js b/igv_component/node_modules/hoist-non-react-statics/src/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..40b764b9035cdfba2325918ef929b6b423250e8e
--- /dev/null
+++ b/igv_component/node_modules/hoist-non-react-statics/src/index.js
@@ -0,0 +1,104 @@
+/**
+ * Copyright 2015, Yahoo! Inc.
+ * Copyrights licensed under the New BSD License. See the accompanying LICENSE file for terms.
+ */
+import { ForwardRef, Memo, isMemo } from 'react-is';
+
+const REACT_STATICS = {
+    childContextTypes: true,
+    contextType: true,
+    contextTypes: true,
+    defaultProps: true,
+    displayName: true,
+    getDefaultProps: true,
+    getDerivedStateFromError: true,
+    getDerivedStateFromProps: true,
+    mixins: true,
+    propTypes: true,
+    type: true
+};
+
+const KNOWN_STATICS = {
+    name: true,
+    length: true,
+    prototype: true,
+    caller: true,
+    callee: true,
+    arguments: true,
+    arity: true
+};
+
+const FORWARD_REF_STATICS = {
+    '$$typeof': true,
+    render: true,
+    defaultProps: true,
+    displayName: true,
+    propTypes: true
+};
+
+const MEMO_STATICS = {
+    '$$typeof': true,
+    compare: true,
+    defaultProps: true,
+    displayName: true,
+    propTypes: true,
+    type: true,
+}
+
+const TYPE_STATICS = {};
+TYPE_STATICS[ForwardRef] = FORWARD_REF_STATICS;
+TYPE_STATICS[Memo] = MEMO_STATICS;
+
+function getStatics(component) {
+    // React v16.11 and below
+    if (isMemo(component)) {
+        return MEMO_STATICS;
+    }
+
+    // React v16.12 and above
+    return TYPE_STATICS[component['$$typeof']] || REACT_STATICS;
+}
+
+const defineProperty = Object.defineProperty;
+const getOwnPropertyNames = Object.getOwnPropertyNames;
+const getOwnPropertySymbols = Object.getOwnPropertySymbols;
+const getOwnPropertyDescriptor = Object.getOwnPropertyDescriptor;
+const getPrototypeOf = Object.getPrototypeOf;
+const objectPrototype = Object.prototype;
+
+export default function hoistNonReactStatics(targetComponent, sourceComponent, blacklist) {
+    if (typeof sourceComponent !== 'string') { // don't hoist over string (html) components
+
+        if (objectPrototype) {
+            const inheritedComponent = getPrototypeOf(sourceComponent);
+            if (inheritedComponent && inheritedComponent !== objectPrototype) {
+                hoistNonReactStatics(targetComponent, inheritedComponent, blacklist);
+            }
+        }
+
+        let keys = getOwnPropertyNames(sourceComponent);
+
+        if (getOwnPropertySymbols) {
+            keys = keys.concat(getOwnPropertySymbols(sourceComponent));
+        }
+
+        const targetStatics = getStatics(targetComponent);
+        const sourceStatics = getStatics(sourceComponent);
+
+        for (let i = 0; i < keys.length; ++i) {
+            const key = keys[i];
+            if (!KNOWN_STATICS[key] &&
+                !(blacklist && blacklist[key]) &&
+                !(sourceStatics && sourceStatics[key]) &&
+                !(targetStatics && targetStatics[key])
+            ) {
+                const descriptor = getOwnPropertyDescriptor(sourceComponent, key);
+                try { // Avoid failures from read-only properties
+                    defineProperty(targetComponent, key, descriptor);
+                } catch (e) {}
+            }
+        }
+    }
+
+    return targetComponent;
+};
diff --git a/igv_component/node_modules/igv/LICENSE b/igv_component/node_modules/igv/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..eb6f0c6a7e564bcf6fd4796e3d31060c132d88c8
--- /dev/null
+++ b/igv_component/node_modules/igv/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014-2019 Broad Institute of MIT and Harvard, Regents of the University of California
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/igv_component/node_modules/igv/README.md b/igv_component/node_modules/igv/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..59eda35018f6620c1c5f7f8164925bfc77c4b19b
--- /dev/null
+++ b/igv_component/node_modules/igv/README.md
@@ -0,0 +1,158 @@
+# igv.js
+![build](https://github.com/igvteam/igv.js/actions/workflows/ci_build.yml/badge.svg)
+[![](https://img.shields.io/npm/dw/igv.svg)](https://www.npmjs.com/package/igv)
+[![](https://img.shields.io/github/last-commit/igvteam/igv.js.svg)](https://github.com/igvteam/igv.js)
+[![](https://img.shields.io/npm/l/igv.svg)](LICENSE)
+[![](https://data.jsdelivr.com/v1/package/npm/igv/badge)](https://www.jsdelivr.com/package/npm/igv)
+
+igv.js is an embeddable interactive genome visualization component developed by the 
+ [Integrative Genomics Viewer (IGV)](https://igv.org) team. 
+
+## Citing igv.js
+
+James T Robinson, Helga Thorvaldsdottir, Douglass Turner, Jill P Mesirov, igv.js: an embeddable JavaScript 
+implementation of the Integrative Genomics Viewer (IGV), Bioinformatics, Volume 39, Issue 1, January 2023, 
+btac830, https://doi.org/10.1093/bioinformatics/btac830
+ 
+Below are examples and a quickstart guide.  See the [Wiki](https://github.com/igvteam/igv.js/wiki) for more documentation.  
+
+# Examples
+ 
+***[Alignments](https://igv.org/web/release/2.15.10/examples/cram-vcf.html)***
+
+***[Interactions](https://igv.org/web/release/2.15.10/examples/interact.html)***
+
+***[Copy number](https://igv.org/web/release/2.15.10/examples/copyNumber.html)***
+
+***[Multiple regions](https://igv.org/web/release/2.15.10/examples/multi-locus.html)***
+
+***[Mutation Annotation Format (MAF)](https://igv.org/web/release/2.15.10/examples/maf-tcga.html)***
+
+***[Variant color options](https://igv.org/web/release/2.15.10/examples/variant-colors.html)***
+
+***[More](https://igv.org/web/release/2.15.10/examples/)***
+
+ 
+# Quickstart
+
+## Installation
+igv.js consists of a single javascript file with no external dependencies.  
+
+Pre-built files for script include, AMD, or CJS module systems (igv.min.js) and an ES6 module (igv.esm.min.js)
+can be downloaded from [https://cdn.jsdelivr.net/npm/igv@2.15.10/dist/](https://cdn.jsdelivr.net/npm/igv@2.15.10/dist/). 
+
+To import igv as an ES6 module
+
+```javascript
+import igv from "https://cdn.jsdelivr.net/npm/igv@2.15.10/dist/igv.esm.min.js"
+``` 
+
+Or as a script include (defines the "igv" global)
+
+```html
+<script src="https://cdn.jsdelivr.net/npm/igv@2.15.10/dist/igv.min.js"></script>
+```   
+ 
+Alternatively you can install with npm  
+ 
+ ```npm install igv```
+
+and source the appropriate file for your module system (igv.min.js or igv.esm.min.js)  in node_modules/igv/dist.
+
+
+## Usage
+
+To create an igv.js ***browser*** supply a container div 
+and an initial configuration defining the reference genome, initial tracks, and other state to the 
+function ```igv.createBrowser(div, config)```.  
+
+This function returns a promise for an igv.Browser object which can used to control the browser.  For example, to open
+a browser on a single alignment track opened at a specific locus:
+
+```
+      var igvDiv = document.getElementById("igv-div");
+      var options =
+        {
+            genome: "hg38",
+            locus: "chr8:127,736,588-127,739,371",
+            tracks: [
+                {
+                    "name": "HG00103",
+                    "url": "https://s3.amazonaws.com/1000genomes/data/HG00103/alignment/HG00103.alt_bwamem_GRCh38DH.20150718.GBR.low_coverage.cram",
+                    "indexURL": "https://s3.amazonaws.com/1000genomes/data/HG00103/alignment/HG00103.alt_bwamem_GRCh38DH.20150718.GBR.low_coverage.cram.crai",
+                    "format": "cram"
+                }
+            ]
+        };
+
+        igv.createBrowser(igvDiv, options)
+                .then(function (browser) {
+                    console.log("Created IGV browser");
+                })
+```
+
+For more details see the [Wiki](https://github.com/igvteam/igv.js/wiki) for full documentation of the API.
+
+## Development
+
+### Requirements
+
+Building igv.js and running the examples require Linux or MacOS.  Other Unix environments will probably
+work but have not been tested.  
+
+Windows users can use [Windows Subsystem for Linux](https://docs.microsoft.com/en-us/windows/wsl/install-win10).
+
+### Building
+
+Building igv.js and running the examples requires [node.js](https://nodejs.org/).
+
+
+```  
+git clone https://github.com/igvteam/igv.js.git
+cd igv.js
+npm install
+npm run build
+```
+
+This creates a dist folder with the following files
+
+* igv.js - UMDS file for script include, AMD, or CJS modules.  A script include will define an "igv" global.
+* igv.min.js - minified version of igv.js
+* igv.esm.js --  ES6 module 
+* igv.esm.min.js --  minified version of igv.esm.js
+
+### Tests
+
+To run the tests from the command line
+
+```
+npm run test
+```
+
+
+### Examples
+
+To run the examples install [http-server](https://www.npmjs.com/package/http-server).
+
+Start  http-server from the project root directory
+
+```bash
+npx http-server 
+```
+
+Then open [http://localhost:8080/examples](http://localhost:8080/examples) in a web browser.
+
+
+# Supported Browsers
+
+igv.js require a modern web browser with support for Javascript ECMAScript 2015 (ES6). 
+
+# License
+
+igv.js is [MIT](/LICENSE) licensed.
+
+
+
+### [Release Notes](https://github.com/igvteam/igv.js/releases)
+
+ 
diff --git a/igv_component/node_modules/igv/dist/igv.esm.js b/igv_component/node_modules/igv/dist/igv.esm.js
new file mode 100644
index 0000000000000000000000000000000000000000..8e0e0a62e3f0a0de8ba28206ffbbb6e13ade0588
--- /dev/null
+++ b/igv_component/node_modules/igv/dist/igv.esm.js
@@ -0,0 +1,63813 @@
+/*!
+ * jQuery JavaScript Library v3.3.1 -ajax,-ajax/jsonp,-ajax/load,-ajax/parseXML,-ajax/script,-ajax/var/location,-ajax/var/nonce,-ajax/var/rquery,-ajax/xhr,-manipulation/_evalUrl,-event/ajax,-effects,-effects/Tween,-effects/animatedSelector
+ * https://jquery.com/
+ *
+ * Includes Sizzle.js
+ * https://sizzlejs.com/
+ *
+ * Copyright JS Foundation and other contributors
+ * Released under the MIT license
+ * https://jquery.org/license
+ *
+ * Date: 2018-01-20T17:24Z
+ */
+
+var arr = [];
+
+var document$1 = window.document;
+
+var getProto = Object.getPrototypeOf;
+
+var slice = arr.slice;
+
+var concat = arr.concat;
+
+var push = arr.push;
+
+var indexOf = arr.indexOf;
+
+var class2type = {};
+
+var toString$3 = class2type.toString;
+
+var hasOwn = class2type.hasOwnProperty;
+
+var fnToString = hasOwn.toString;
+
+var ObjectFunctionString = fnToString.call(Object);
+
+var support = {};
+
+var isFunction = function isFunction(obj) {
+
+    // Support: Chrome <=57, Firefox <=52
+    // In some browsers, typeof returns "function" for HTML <object> elements
+    // (i.e., `typeof document.createElement( "object" ) === "function"`).
+    // We don't want to classify *any* DOM node as a function.
+    return typeof obj === "function" && typeof obj.nodeType !== "number";
+};
+
+
+var isWindow = function isWindow(obj) {
+    return obj != null && obj === obj.window;
+};
+
+
+var preservedScriptAttributes = {
+    type: true,
+    src: true,
+    noModule: true
+};
+
+function DOMEval(code, doc, node) {
+    doc = doc || document$1;
+
+    var i,
+        script = doc.createElement("script");
+
+    script.text = code;
+    if (node) {
+        for (i in preservedScriptAttributes) {
+            if (node[i]) {
+                script[i] = node[i];
+            }
+        }
+    }
+    doc.head.appendChild(script).parentNode.removeChild(script);
+}
+
+
+function toType(obj) {
+    if (obj == null) {
+        return obj + "";
+    }
+
+    // Support: Android <=2.3 only (functionish RegExp)
+    return typeof obj === "object" || typeof obj === "function" ?
+        class2type[toString$3.call(obj)] || "object" :
+        typeof obj;
+}
+
+// global Symbol
+// Defining this global in .eslintrc.json would create a danger of using the global
+// unguarded in another place, it seems safer to define global only for this module
+
+
+var
+    version$1 = "3.3.1 -ajax,-ajax/jsonp,-ajax/load,-ajax/parseXML,-ajax/script,-ajax/var/location,-ajax/var/nonce,-ajax/var/rquery,-ajax/xhr,-manipulation/_evalUrl,-event/ajax,-effects,-effects/Tween,-effects/animatedSelector",
+
+    // Define a local copy of jQuery
+    jQuery = function (selector, context) {
+
+        // The jQuery object is actually just the init constructor 'enhanced'
+        // Need init if jQuery is called (just allow error to be thrown if not included)
+        return new jQuery.fn.init(selector, context);
+    },
+
+    // Support: Android <=4.0 only
+    // Make sure we trim BOM and NBSP
+    rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g;
+
+jQuery.fn = jQuery.prototype = {
+
+    // The current version of jQuery being used
+    jquery: version$1,
+
+    constructor: jQuery,
+
+    // The default length of a jQuery object is 0
+    length: 0,
+
+    toArray: function () {
+        return slice.call(this);
+    },
+
+    // Get the Nth element in the matched element set OR
+    // Get the whole matched element set as a clean array
+    get: function (num) {
+
+        // Return all the elements in a clean array
+        if (num == null) {
+            return slice.call(this);
+        }
+
+        // Return just the one element from the set
+        return num < 0 ? this[num + this.length] : this[num];
+    },
+
+    // Take an array of elements and push it onto the stack
+    // (returning the new matched element set)
+    pushStack: function (elems) {
+
+        // Build a new jQuery matched element set
+        var ret = jQuery.merge(this.constructor(), elems);
+
+        // Add the old object onto the stack (as a reference)
+        ret.prevObject = this;
+
+        // Return the newly-formed element set
+        return ret;
+    },
+
+    // Execute a callback for every element in the matched set.
+    each: function (callback) {
+        return jQuery.each(this, callback);
+    },
+
+    map: function (callback) {
+        return this.pushStack(jQuery.map(this, function (elem, i) {
+            return callback.call(elem, i, elem);
+        }));
+    },
+
+    slice: function () {
+        return this.pushStack(slice.apply(this, arguments));
+    },
+
+    first: function () {
+        return this.eq(0);
+    },
+
+    last: function () {
+        return this.eq(-1);
+    },
+
+    eq: function (i) {
+        var len = this.length,
+            j = +i + (i < 0 ? len : 0);
+        return this.pushStack(j >= 0 && j < len ? [this[j]] : []);
+    },
+
+    end: function () {
+        return this.prevObject || this.constructor();
+    },
+
+    // For internal use only.
+    // Behaves like an Array's method, not like a jQuery method.
+    push: push,
+    sort: arr.sort,
+    splice: arr.splice
+};
+
+jQuery.extend = jQuery.fn.extend = function () {
+    var options, name, src, copy, copyIsArray, clone,
+        target = arguments[0] || {},
+        i = 1,
+        length = arguments.length,
+        deep = false;
+
+    // Handle a deep copy situation
+    if (typeof target === "boolean") {
+        deep = target;
+
+        // Skip the boolean and the target
+        target = arguments[i] || {};
+        i++;
+    }
+
+    // Handle case when target is a string or something (possible in deep copy)
+    if (typeof target !== "object" && !isFunction(target)) {
+        target = {};
+    }
+
+    // Extend jQuery itself if only one argument is passed
+    if (i === length) {
+        target = this;
+        i--;
+    }
+
+    for (; i < length; i++) {
+
+        // Only deal with non-null/undefined values
+        if ((options = arguments[i]) != null) {
+
+            // Extend the base object
+            for (name in options) {
+                src = target[name];
+                copy = options[name];
+
+                // Prevent never-ending loop
+                if (target === copy) {
+                    continue;
+                }
+
+                // Recurse if we're merging plain objects or arrays
+                if (deep && copy && (jQuery.isPlainObject(copy) ||
+                    (copyIsArray = Array.isArray(copy)))) {
+
+                    if (copyIsArray) {
+                        copyIsArray = false;
+                        clone = src && Array.isArray(src) ? src : [];
+
+                    } else {
+                        clone = src && jQuery.isPlainObject(src) ? src : {};
+                    }
+
+                    // Never move original objects, clone them
+                    target[name] = jQuery.extend(deep, clone, copy);
+
+                    // Don't bring in undefined values
+                } else if (copy !== undefined) {
+                    target[name] = copy;
+                }
+            }
+        }
+    }
+
+    // Return the modified object
+    return target;
+};
+
+jQuery.extend({
+
+    // Unique for each copy of jQuery on the page
+    expando: "jQuery" + (version$1 + Math.random()).replace(/\D/g, ""),
+
+    // Assume jQuery is ready without the ready module
+    isReady: true,
+
+    error: function (msg) {
+        throw new Error(msg);
+    },
+
+    noop: function () {
+    },
+
+    isPlainObject: function (obj) {
+        var proto, Ctor;
+
+        // Detect obvious negatives
+        // Use toString instead of jQuery.type to catch host objects
+        if (!obj || toString$3.call(obj) !== "[object Object]") {
+            return false;
+        }
+
+        proto = getProto(obj);
+
+        // Objects with no prototype (e.g., `Object.create( null )`) are plain
+        if (!proto) {
+            return true;
+        }
+
+        // Objects with prototype are plain iff they were constructed by a global Object function
+        Ctor = hasOwn.call(proto, "constructor") && proto.constructor;
+        return typeof Ctor === "function" && fnToString.call(Ctor) === ObjectFunctionString;
+    },
+
+    isEmptyObject: function (obj) {
+
+        /* eslint-disable no-unused-vars */
+        // See https://github.com/eslint/eslint/issues/6125
+        var name;
+
+        for (name in obj) {
+            return false;
+        }
+        return true;
+    },
+
+    // Evaluates a script in a global context
+    globalEval: function (code) {
+        DOMEval(code);
+    },
+
+    each: function (obj, callback) {
+        var length, i = 0;
+
+        if (isArrayLike(obj)) {
+            length = obj.length;
+            for (; i < length; i++) {
+                if (callback.call(obj[i], i, obj[i]) === false) {
+                    break;
+                }
+            }
+        } else {
+            for (i in obj) {
+                if (callback.call(obj[i], i, obj[i]) === false) {
+                    break;
+                }
+            }
+        }
+
+        return obj;
+    },
+
+    // Support: Android <=4.0 only
+    trim: function (text) {
+        return text == null ?
+            "" :
+            (text + "").replace(rtrim, "");
+    },
+
+    // results is for internal usage only
+    makeArray: function (arr, results) {
+        var ret = results || [];
+
+        if (arr != null) {
+            if (isArrayLike(Object(arr))) {
+                jQuery.merge(ret,
+                    typeof arr === "string" ?
+                        [arr] : arr
+                );
+            } else {
+                push.call(ret, arr);
+            }
+        }
+
+        return ret;
+    },
+
+    inArray: function (elem, arr, i) {
+        return arr == null ? -1 : indexOf.call(arr, elem, i);
+    },
+
+    // Support: Android <=4.0 only, PhantomJS 1 only
+    // push.apply(_, arraylike) throws on ancient WebKit
+    merge: function (first, second) {
+        var len = +second.length,
+            j = 0,
+            i = first.length;
+
+        for (; j < len; j++) {
+            first[i++] = second[j];
+        }
+
+        first.length = i;
+
+        return first;
+    },
+
+    grep: function (elems, callback, invert) {
+        var callbackInverse,
+            matches = [],
+            i = 0,
+            length = elems.length,
+            callbackExpect = !invert;
+
+        // Go through the array, only saving the items
+        // that pass the validator function
+        for (; i < length; i++) {
+            callbackInverse = !callback(elems[i], i);
+            if (callbackInverse !== callbackExpect) {
+                matches.push(elems[i]);
+            }
+        }
+
+        return matches;
+    },
+
+    // arg is for internal usage only
+    map: function (elems, callback, arg) {
+        var length, value,
+            i = 0,
+            ret = [];
+
+        // Go through the array, translating each of the items to their new values
+        if (isArrayLike(elems)) {
+            length = elems.length;
+            for (; i < length; i++) {
+                value = callback(elems[i], i, arg);
+
+                if (value != null) {
+                    ret.push(value);
+                }
+            }
+
+            // Go through every key on the object,
+        } else {
+            for (i in elems) {
+                value = callback(elems[i], i, arg);
+
+                if (value != null) {
+                    ret.push(value);
+                }
+            }
+        }
+
+        // Flatten any nested arrays
+        return concat.apply([], ret);
+    },
+
+    // A global GUID counter for objects
+    guid: 1,
+
+    // jQuery.support is not used in Core but other projects attach their
+    // properties to it so it needs to exist.
+    support: support
+});
+
+if (typeof Symbol === "function") {
+    jQuery.fn[Symbol.iterator] = arr[Symbol.iterator];
+}
+
+// Populate the class2type map
+jQuery.each("Boolean Number String Function Array Date RegExp Object Error Symbol".split(" "),
+    function (i, name) {
+        class2type["[object " + name + "]"] = name.toLowerCase();
+    });
+
+function isArrayLike(obj) {
+
+    // Support: real iOS 8.2 only (not reproducible in simulator)
+    // `in` check used to prevent JIT error (gh-2145)
+    // hasOwn isn't used here due to false negatives
+    // regarding Nodelist length in IE
+    var length = !!obj && "length" in obj && obj.length,
+        type = toType(obj);
+
+    if (isFunction(obj) || isWindow(obj)) {
+        return false;
+    }
+
+    return type === "array" || length === 0 ||
+        typeof length === "number" && length > 0 && (length - 1) in obj;
+}
+
+var Sizzle =
+    /*!
+ * Sizzle CSS Selector Engine v2.3.3
+ * https://sizzlejs.com/
+ *
+ * Copyright jQuery Foundation and other contributors
+ * Released under the MIT license
+ * http://jquery.org/license
+ *
+ * Date: 2016-08-08
+ */
+    (function (window) {
+
+        var i,
+            support,
+            Expr,
+            getText,
+            isXML,
+            tokenize,
+            compile,
+            select,
+            outermostContext,
+            sortInput,
+            hasDuplicate,
+
+            // Local document vars
+            setDocument,
+            document,
+            docElem,
+            documentIsHTML,
+            rbuggyQSA,
+            rbuggyMatches,
+            matches,
+            contains,
+
+            // Instance-specific data
+            expando = "sizzle" + 1 * new Date(),
+            preferredDoc = window.document,
+            dirruns = 0,
+            done = 0,
+            classCache = createCache(),
+            tokenCache = createCache(),
+            compilerCache = createCache(),
+            sortOrder = function (a, b) {
+                if (a === b) {
+                    hasDuplicate = true;
+                }
+                return 0;
+            },
+
+            // Instance methods
+            hasOwn = ({}).hasOwnProperty,
+            arr = [],
+            pop = arr.pop,
+            push_native = arr.push,
+            push = arr.push,
+            slice = arr.slice,
+            // Use a stripped-down indexOf as it's faster than native
+            // https://jsperf.com/thor-indexof-vs-for/5
+            indexOf = function (list, elem) {
+                var i = 0,
+                    len = list.length;
+                for (; i < len; i++) {
+                    if (list[i] === elem) {
+                        return i;
+                    }
+                }
+                return -1;
+            },
+
+            booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped",
+
+            // Regular expressions
+
+            // http://www.w3.org/TR/css3-selectors/#whitespace
+            whitespace = "[\\x20\\t\\r\\n\\f]",
+
+            // http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier
+            identifier = "(?:\\\\.|[\\w-]|[^\0-\\xa0])+",
+
+            // Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors
+            attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace +
+                // Operator (capture 2)
+                "*([*^$|!~]?=)" + whitespace +
+                // "Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]"
+                "*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + whitespace +
+                "*\\]",
+
+            pseudos = ":(" + identifier + ")(?:\\((" +
+                // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:
+                // 1. quoted (capture 3; capture 4 or capture 5)
+                "('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" +
+                // 2. simple (capture 6)
+                "((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" +
+                // 3. anything else (capture 2)
+                ".*" +
+                ")\\)|)",
+
+            // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter
+            rwhitespace = new RegExp(whitespace + "+", "g"),
+            rtrim = new RegExp("^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g"),
+
+            rcomma = new RegExp("^" + whitespace + "*," + whitespace + "*"),
+            rcombinators = new RegExp("^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + "*"),
+
+            rattributeQuotes = new RegExp("=" + whitespace + "*([^\\]'\"]*?)" + whitespace + "*\\]", "g"),
+
+            rpseudo = new RegExp(pseudos),
+            ridentifier = new RegExp("^" + identifier + "$"),
+
+            matchExpr = {
+                "ID": new RegExp("^#(" + identifier + ")"),
+                "CLASS": new RegExp("^\\.(" + identifier + ")"),
+                "TAG": new RegExp("^(" + identifier + "|[*])"),
+                "ATTR": new RegExp("^" + attributes),
+                "PSEUDO": new RegExp("^" + pseudos),
+                "CHILD": new RegExp("^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + whitespace +
+                    "*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace +
+                    "*(\\d+)|))" + whitespace + "*\\)|)", "i"),
+                "bool": new RegExp("^(?:" + booleans + ")$", "i"),
+                // For use in libraries implementing .is()
+                // We use this for POS matching in `select`
+                "needsContext": new RegExp("^" + whitespace + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" +
+                    whitespace + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i")
+            },
+
+            rinputs = /^(?:input|select|textarea|button)$/i,
+            rheader = /^h\d$/i,
+
+            rnative = /^[^{]+\{\s*\[native \w/,
+
+            // Easily-parseable/retrievable ID or TAG or CLASS selectors
+            rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/,
+
+            rsibling = /[+~]/,
+
+            // CSS escapes
+            // http://www.w3.org/TR/CSS21/syndata.html#escaped-characters
+            runescape = new RegExp("\\\\([\\da-f]{1,6}" + whitespace + "?|(" + whitespace + ")|.)", "ig"),
+            funescape = function (_, escaped, escapedWhitespace) {
+                var high = "0x" + escaped - 0x10000;
+                // NaN means non-codepoint
+                // Support: Firefox<24
+                // Workaround erroneous numeric interpretation of +"0x"
+                return high !== high || escapedWhitespace ?
+                    escaped :
+                    high < 0 ?
+                        // BMP codepoint
+                        String.fromCharCode(high + 0x10000) :
+                        // Supplemental Plane codepoint (surrogate pair)
+                        String.fromCharCode(high >> 10 | 0xD800, high & 0x3FF | 0xDC00);
+            },
+
+            // CSS string/identifier serialization
+            // https://drafts.csswg.org/cssom/#common-serializing-idioms
+            // eslint-disable-next-line no-control-regex
+            rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g,
+            fcssescape = function (ch, asCodePoint) {
+                if (asCodePoint) {
+
+                    // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER
+                    if (ch === "\0") {
+                        return "\uFFFD";
+                    }
+
+                    // Control characters and (dependent upon position) numbers get escaped as code points
+                    return ch.slice(0, -1) + "\\" + ch.charCodeAt(ch.length - 1).toString(16) + " ";
+                }
+
+                // Other potentially-special ASCII characters get backslash-escaped
+                return "\\" + ch;
+            },
+
+            // Used for iframes
+            // See setDocument()
+            // Removing the function wrapper causes a "Permission Denied"
+            // error in IE
+            unloadHandler = function () {
+                setDocument();
+            },
+
+            disabledAncestor = addCombinator(
+                function (elem) {
+                    return elem.disabled === true && ("form" in elem || "label" in elem);
+                },
+                {dir: "parentNode", next: "legend"}
+            );
+
+// Optimize for push.apply( _, NodeList )
+        try {
+            push.apply(
+                (arr = slice.call(preferredDoc.childNodes)),
+                preferredDoc.childNodes
+            );
+            // Support: Android<4.0
+            // Detect silently failing push.apply
+            arr[preferredDoc.childNodes.length].nodeType;
+        } catch (e) {
+            push = {
+                apply: arr.length ?
+
+                    // Leverage slice if possible
+                    function (target, els) {
+                        push_native.apply(target, slice.call(els));
+                    } :
+
+                    // Support: IE<9
+                    // Otherwise append directly
+                    function (target, els) {
+                        var j = target.length,
+                            i = 0;
+                        // Can't trust NodeList.length
+                        while ((target[j++] = els[i++])) {
+                        }
+                        target.length = j - 1;
+                    }
+            };
+        }
+
+        function Sizzle(selector, context, results, seed) {
+            var m, i, elem, nid, match, groups, newSelector,
+                newContext = context && context.ownerDocument,
+
+                // nodeType defaults to 9, since context defaults to document
+                nodeType = context ? context.nodeType : 9;
+
+            results = results || [];
+
+            // Return early from calls with invalid selector or context
+            if (typeof selector !== "string" || !selector ||
+                nodeType !== 1 && nodeType !== 9 && nodeType !== 11) {
+
+                return results;
+            }
+
+            // Try to shortcut find operations (as opposed to filters) in HTML documents
+            if (!seed) {
+
+                if ((context ? context.ownerDocument || context : preferredDoc) !== document) {
+                    setDocument(context);
+                }
+                context = context || document;
+
+                if (documentIsHTML) {
+
+                    // If the selector is sufficiently simple, try using a "get*By*" DOM method
+                    // (excepting DocumentFragment context, where the methods don't exist)
+                    if (nodeType !== 11 && (match = rquickExpr.exec(selector))) {
+
+                        // ID selector
+                        if ((m = match[1])) {
+
+                            // Document context
+                            if (nodeType === 9) {
+                                if ((elem = context.getElementById(m))) {
+
+                                    // Support: IE, Opera, Webkit
+                                    // TODO: identify versions
+                                    // getElementById can match elements by name instead of ID
+                                    if (elem.id === m) {
+                                        results.push(elem);
+                                        return results;
+                                    }
+                                } else {
+                                    return results;
+                                }
+
+                                // Element context
+                            } else {
+
+                                // Support: IE, Opera, Webkit
+                                // TODO: identify versions
+                                // getElementById can match elements by name instead of ID
+                                if (newContext && (elem = newContext.getElementById(m)) &&
+                                    contains(context, elem) &&
+                                    elem.id === m) {
+
+                                    results.push(elem);
+                                    return results;
+                                }
+                            }
+
+                            // Type selector
+                        } else if (match[2]) {
+                            push.apply(results, context.getElementsByTagName(selector));
+                            return results;
+
+                            // Class selector
+                        } else if ((m = match[3]) && support.getElementsByClassName &&
+                            context.getElementsByClassName) {
+
+                            push.apply(results, context.getElementsByClassName(m));
+                            return results;
+                        }
+                    }
+
+                    // Take advantage of querySelectorAll
+                    if (support.qsa &&
+                        !compilerCache[selector + " "] &&
+                        (!rbuggyQSA || !rbuggyQSA.test(selector))) {
+
+                        if (nodeType !== 1) {
+                            newContext = context;
+                            newSelector = selector;
+
+                            // qSA looks outside Element context, which is not what we want
+                            // Thanks to Andrew Dupont for this workaround technique
+                            // Support: IE <=8
+                            // Exclude object elements
+                        } else if (context.nodeName.toLowerCase() !== "object") {
+
+                            // Capture the context ID, setting it first if necessary
+                            if ((nid = context.getAttribute("id"))) {
+                                nid = nid.replace(rcssescape, fcssescape);
+                            } else {
+                                context.setAttribute("id", (nid = expando));
+                            }
+
+                            // Prefix every selector in the list
+                            groups = tokenize(selector);
+                            i = groups.length;
+                            while (i--) {
+                                groups[i] = "#" + nid + " " + toSelector(groups[i]);
+                            }
+                            newSelector = groups.join(",");
+
+                            // Expand context for sibling selectors
+                            newContext = rsibling.test(selector) && testContext(context.parentNode) ||
+                                context;
+                        }
+
+                        if (newSelector) {
+                            try {
+                                push.apply(results,
+                                    newContext.querySelectorAll(newSelector)
+                                );
+                                return results;
+                            } catch (qsaError) {
+                            } finally {
+                                if (nid === expando) {
+                                    context.removeAttribute("id");
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+
+            // All others
+            return select(selector.replace(rtrim, "$1"), context, results, seed);
+        }
+
+        /**
+         * Create key-value caches of limited size
+         * @returns {function(string, object)} Returns the Object data after storing it on itself with
+         *    property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)
+         *    deleting the oldest entry
+         */
+        function createCache() {
+            var keys = [];
+
+            function cache(key, value) {
+                // Use (key + " ") to avoid collision with native prototype properties (see Issue #157)
+                if (keys.push(key + " ") > Expr.cacheLength) {
+                    // Only keep the most recent entries
+                    delete cache[keys.shift()];
+                }
+                return (cache[key + " "] = value);
+            }
+
+            return cache;
+        }
+
+        /**
+         * Mark a function for special use by Sizzle
+         * @param {Function} fn The function to mark
+         */
+        function markFunction(fn) {
+            fn[expando] = true;
+            return fn;
+        }
+
+        /**
+         * Support testing using an element
+         * @param {Function} fn Passed the created element and returns a boolean result
+         */
+        function assert(fn) {
+            var el = document.createElement("fieldset");
+
+            try {
+                return !!fn(el);
+            } catch (e) {
+                return false;
+            } finally {
+                // Remove from its parent by default
+                if (el.parentNode) {
+                    el.parentNode.removeChild(el);
+                }
+                // release memory in IE
+                el = null;
+            }
+        }
+
+        /**
+         * Checks document order of two siblings
+         * @param {Element} a
+         * @param {Element} b
+         * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b
+         */
+        function siblingCheck(a, b) {
+            var cur = b && a,
+                diff = cur && a.nodeType === 1 && b.nodeType === 1 &&
+                    a.sourceIndex - b.sourceIndex;
+
+            // Use IE sourceIndex if available on both nodes
+            if (diff) {
+                return diff;
+            }
+
+            // Check if b follows a
+            if (cur) {
+                while ((cur = cur.nextSibling)) {
+                    if (cur === b) {
+                        return -1;
+                    }
+                }
+            }
+
+            return a ? 1 : -1;
+        }
+
+        /**
+         * Returns a function to use in pseudos for input types
+         * @param {String} type
+         */
+        function createInputPseudo(type) {
+            return function (elem) {
+                var name = elem.nodeName.toLowerCase();
+                return name === "input" && elem.type === type;
+            };
+        }
+
+        /**
+         * Returns a function to use in pseudos for buttons
+         * @param {String} type
+         */
+        function createButtonPseudo(type) {
+            return function (elem) {
+                var name = elem.nodeName.toLowerCase();
+                return (name === "input" || name === "button") && elem.type === type;
+            };
+        }
+
+        /**
+         * Returns a function to use in pseudos for :enabled/:disabled
+         * @param {Boolean} disabled true for :disabled; false for :enabled
+         */
+        function createDisabledPseudo(disabled) {
+
+            // Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable
+            return function (elem) {
+
+                // Only certain elements can match :enabled or :disabled
+                // https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled
+                // https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled
+                if ("form" in elem) {
+
+                    // Check for inherited disabledness on relevant non-disabled elements:
+                    // * listed form-associated elements in a disabled fieldset
+                    //   https://html.spec.whatwg.org/multipage/forms.html#category-listed
+                    //   https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled
+                    // * option elements in a disabled optgroup
+                    //   https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled
+                    // All such elements have a "form" property.
+                    if (elem.parentNode && elem.disabled === false) {
+
+                        // Option elements defer to a parent optgroup if present
+                        if ("label" in elem) {
+                            if ("label" in elem.parentNode) {
+                                return elem.parentNode.disabled === disabled;
+                            } else {
+                                return elem.disabled === disabled;
+                            }
+                        }
+
+                        // Support: IE 6 - 11
+                        // Use the isDisabled shortcut property to check for disabled fieldset ancestors
+                        return elem.isDisabled === disabled ||
+
+                            // Where there is no isDisabled, check manually
+                            /* jshint -W018 */
+                            elem.isDisabled !== !disabled &&
+                            disabledAncestor(elem) === disabled;
+                    }
+
+                    return elem.disabled === disabled;
+
+                    // Try to winnow out elements that can't be disabled before trusting the disabled property.
+                    // Some victims get caught in our net (label, legend, menu, track), but it shouldn't
+                    // even exist on them, let alone have a boolean value.
+                } else if ("label" in elem) {
+                    return elem.disabled === disabled;
+                }
+
+                // Remaining elements are neither :enabled nor :disabled
+                return false;
+            };
+        }
+
+        /**
+         * Returns a function to use in pseudos for positionals
+         * @param {Function} fn
+         */
+        function createPositionalPseudo(fn) {
+            return markFunction(function (argument) {
+                argument = +argument;
+                return markFunction(function (seed, matches) {
+                    var j,
+                        matchIndexes = fn([], seed.length, argument),
+                        i = matchIndexes.length;
+
+                    // Match elements found at the specified indexes
+                    while (i--) {
+                        if (seed[(j = matchIndexes[i])]) {
+                            seed[j] = !(matches[j] = seed[j]);
+                        }
+                    }
+                });
+            });
+        }
+
+        /**
+         * Checks a node for validity as a Sizzle context
+         * @param {Element|Object=} context
+         * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value
+         */
+        function testContext(context) {
+            return context && typeof context.getElementsByTagName !== "undefined" && context;
+        }
+
+// Expose support vars for convenience
+        support = Sizzle.support = {};
+
+        /**
+         * Detects XML nodes
+         * @param {Element|Object} elem An element or a document
+         * @returns {Boolean} True iff elem is a non-HTML XML node
+         */
+        isXML = Sizzle.isXML = function (elem) {
+            // documentElement is verified for cases where it doesn't yet exist
+            // (such as loading iframes in IE - #4833)
+            var documentElement = elem && (elem.ownerDocument || elem).documentElement;
+            return documentElement ? documentElement.nodeName !== "HTML" : false;
+        };
+
+        /**
+         * Sets document-related variables once based on the current document
+         * @param {Element|Object} [doc] An element or document object to use to set the document
+         * @returns {Object} Returns the current document
+         */
+        setDocument = Sizzle.setDocument = function (node) {
+            var hasCompare, subWindow,
+                doc = node ? node.ownerDocument || node : preferredDoc;
+
+            // Return early if doc is invalid or already selected
+            if (doc === document || doc.nodeType !== 9 || !doc.documentElement) {
+                return document;
+            }
+
+            // Update global variables
+            document = doc;
+            docElem = document.documentElement;
+            documentIsHTML = !isXML(document);
+
+            // Support: IE 9-11, Edge
+            // Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936)
+            if (preferredDoc !== document &&
+                (subWindow = document.defaultView) && subWindow.top !== subWindow) {
+
+                // Support: IE 11, Edge
+                if (subWindow.addEventListener) {
+                    subWindow.addEventListener("unload", unloadHandler, false);
+
+                    // Support: IE 9 - 10 only
+                } else if (subWindow.attachEvent) {
+                    subWindow.attachEvent("onunload", unloadHandler);
+                }
+            }
+
+            /* Attributes
+	---------------------------------------------------------------------- */
+
+            // Support: IE<8
+            // Verify that getAttribute really returns attributes and not properties
+            // (excepting IE8 booleans)
+            support.attributes = assert(function (el) {
+                el.className = "i";
+                return !el.getAttribute("className");
+            });
+
+            /* getElement(s)By*
+	---------------------------------------------------------------------- */
+
+            // Check if getElementsByTagName("*") returns only elements
+            support.getElementsByTagName = assert(function (el) {
+                el.appendChild(document.createComment(""));
+                return !el.getElementsByTagName("*").length;
+            });
+
+            // Support: IE<9
+            support.getElementsByClassName = rnative.test(document.getElementsByClassName);
+
+            // Support: IE<10
+            // Check if getElementById returns elements by name
+            // The broken getElementById methods don't pick up programmatically-set names,
+            // so use a roundabout getElementsByName test
+            support.getById = assert(function (el) {
+                docElem.appendChild(el).id = expando;
+                return !document.getElementsByName || !document.getElementsByName(expando).length;
+            });
+
+            // ID filter and find
+            if (support.getById) {
+                Expr.filter["ID"] = function (id) {
+                    var attrId = id.replace(runescape, funescape);
+                    return function (elem) {
+                        return elem.getAttribute("id") === attrId;
+                    };
+                };
+                Expr.find["ID"] = function (id, context) {
+                    if (typeof context.getElementById !== "undefined" && documentIsHTML) {
+                        var elem = context.getElementById(id);
+                        return elem ? [elem] : [];
+                    }
+                };
+            } else {
+                Expr.filter["ID"] = function (id) {
+                    var attrId = id.replace(runescape, funescape);
+                    return function (elem) {
+                        var node = typeof elem.getAttributeNode !== "undefined" &&
+                            elem.getAttributeNode("id");
+                        return node && node.value === attrId;
+                    };
+                };
+
+                // Support: IE 6 - 7 only
+                // getElementById is not reliable as a find shortcut
+                Expr.find["ID"] = function (id, context) {
+                    if (typeof context.getElementById !== "undefined" && documentIsHTML) {
+                        var node, i, elems,
+                            elem = context.getElementById(id);
+
+                        if (elem) {
+
+                            // Verify the id attribute
+                            node = elem.getAttributeNode("id");
+                            if (node && node.value === id) {
+                                return [elem];
+                            }
+
+                            // Fall back on getElementsByName
+                            elems = context.getElementsByName(id);
+                            i = 0;
+                            while ((elem = elems[i++])) {
+                                node = elem.getAttributeNode("id");
+                                if (node && node.value === id) {
+                                    return [elem];
+                                }
+                            }
+                        }
+
+                        return [];
+                    }
+                };
+            }
+
+            // Tag
+            Expr.find["TAG"] = support.getElementsByTagName ?
+                function (tag, context) {
+                    if (typeof context.getElementsByTagName !== "undefined") {
+                        return context.getElementsByTagName(tag);
+
+                        // DocumentFragment nodes don't have gEBTN
+                    } else if (support.qsa) {
+                        return context.querySelectorAll(tag);
+                    }
+                } :
+
+                function (tag, context) {
+                    var elem,
+                        tmp = [],
+                        i = 0,
+                        // By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too
+                        results = context.getElementsByTagName(tag);
+
+                    // Filter out possible comments
+                    if (tag === "*") {
+                        while ((elem = results[i++])) {
+                            if (elem.nodeType === 1) {
+                                tmp.push(elem);
+                            }
+                        }
+
+                        return tmp;
+                    }
+                    return results;
+                };
+
+            // Class
+            Expr.find["CLASS"] = support.getElementsByClassName && function (className, context) {
+                if (typeof context.getElementsByClassName !== "undefined" && documentIsHTML) {
+                    return context.getElementsByClassName(className);
+                }
+            };
+
+            /* QSA/matchesSelector
+	---------------------------------------------------------------------- */
+
+            // QSA and matchesSelector support
+
+            // matchesSelector(:active) reports false when true (IE9/Opera 11.5)
+            rbuggyMatches = [];
+
+            // qSa(:focus) reports false when true (Chrome 21)
+            // We allow this because of a bug in IE8/9 that throws an error
+            // whenever `document.activeElement` is accessed on an iframe
+            // So, we allow :focus to pass through QSA all the time to avoid the IE error
+            // See https://bugs.jquery.com/ticket/13378
+            rbuggyQSA = [];
+
+            if ((support.qsa = rnative.test(document.querySelectorAll))) {
+                // Build QSA regex
+                // Regex strategy adopted from Diego Perini
+                assert(function (el) {
+                    // Select is set to empty string on purpose
+                    // This is to test IE's treatment of not explicitly
+                    // setting a boolean content attribute,
+                    // since its presence should be enough
+                    // https://bugs.jquery.com/ticket/12359
+                    docElem.appendChild(el).innerHTML = "<a id='" + expando + "'></a>" +
+                        "<select id='" + expando + "-\r\\' msallowcapture=''>" +
+                        "<option selected=''></option></select>";
+
+                    // Support: IE8, Opera 11-12.16
+                    // Nothing should be selected when empty strings follow ^= or $= or *=
+                    // The test attribute must be unknown in Opera but "safe" for WinRT
+                    // https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section
+                    if (el.querySelectorAll("[msallowcapture^='']").length) {
+                        rbuggyQSA.push("[*^$]=" + whitespace + "*(?:''|\"\")");
+                    }
+
+                    // Support: IE8
+                    // Boolean attributes and "value" are not treated correctly
+                    if (!el.querySelectorAll("[selected]").length) {
+                        rbuggyQSA.push("\\[" + whitespace + "*(?:value|" + booleans + ")");
+                    }
+
+                    // Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+
+                    if (!el.querySelectorAll("[id~=" + expando + "-]").length) {
+                        rbuggyQSA.push("~=");
+                    }
+
+                    // Webkit/Opera - :checked should return selected option elements
+                    // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
+                    // IE8 throws error here and will not see later tests
+                    if (!el.querySelectorAll(":checked").length) {
+                        rbuggyQSA.push(":checked");
+                    }
+
+                    // Support: Safari 8+, iOS 8+
+                    // https://bugs.webkit.org/show_bug.cgi?id=136851
+                    // In-page `selector#id sibling-combinator selector` fails
+                    if (!el.querySelectorAll("a#" + expando + "+*").length) {
+                        rbuggyQSA.push(".#.+[+~]");
+                    }
+                });
+
+                assert(function (el) {
+                    el.innerHTML = "<a href='' disabled='disabled'></a>" +
+                        "<select disabled='disabled'><option/></select>";
+
+                    // Support: Windows 8 Native Apps
+                    // The type and name attributes are restricted during .innerHTML assignment
+                    var input = document.createElement("input");
+                    input.setAttribute("type", "hidden");
+                    el.appendChild(input).setAttribute("name", "D");
+
+                    // Support: IE8
+                    // Enforce case-sensitivity of name attribute
+                    if (el.querySelectorAll("[name=d]").length) {
+                        rbuggyQSA.push("name" + whitespace + "*[*^$|!~]?=");
+                    }
+
+                    // FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)
+                    // IE8 throws error here and will not see later tests
+                    if (el.querySelectorAll(":enabled").length !== 2) {
+                        rbuggyQSA.push(":enabled", ":disabled");
+                    }
+
+                    // Support: IE9-11+
+                    // IE's :disabled selector does not pick up the children of disabled fieldsets
+                    docElem.appendChild(el).disabled = true;
+                    if (el.querySelectorAll(":disabled").length !== 2) {
+                        rbuggyQSA.push(":enabled", ":disabled");
+                    }
+
+                    // Opera 10-11 does not throw on post-comma invalid pseudos
+                    el.querySelectorAll("*,:x");
+                    rbuggyQSA.push(",.*:");
+                });
+            }
+
+            if ((support.matchesSelector = rnative.test((matches = docElem.matches ||
+                docElem.webkitMatchesSelector ||
+                docElem.mozMatchesSelector ||
+                docElem.oMatchesSelector ||
+                docElem.msMatchesSelector)))) {
+
+                assert(function (el) {
+                    // Check to see if it's possible to do matchesSelector
+                    // on a disconnected node (IE 9)
+                    support.disconnectedMatch = matches.call(el, "*");
+
+                    // This should fail with an exception
+                    // Gecko does not error, returns false instead
+                    matches.call(el, "[s!='']:x");
+                    rbuggyMatches.push("!=", pseudos);
+                });
+            }
+
+            rbuggyQSA = rbuggyQSA.length && new RegExp(rbuggyQSA.join("|"));
+            rbuggyMatches = rbuggyMatches.length && new RegExp(rbuggyMatches.join("|"));
+
+            /* Contains
+	---------------------------------------------------------------------- */
+            hasCompare = rnative.test(docElem.compareDocumentPosition);
+
+            // Element contains another
+            // Purposefully self-exclusive
+            // As in, an element does not contain itself
+            contains = hasCompare || rnative.test(docElem.contains) ?
+                function (a, b) {
+                    var adown = a.nodeType === 9 ? a.documentElement : a,
+                        bup = b && b.parentNode;
+                    return a === bup || !!(bup && bup.nodeType === 1 && (
+                        adown.contains ?
+                            adown.contains(bup) :
+                            a.compareDocumentPosition && a.compareDocumentPosition(bup) & 16
+                    ));
+                } :
+                function (a, b) {
+                    if (b) {
+                        while ((b = b.parentNode)) {
+                            if (b === a) {
+                                return true;
+                            }
+                        }
+                    }
+                    return false;
+                };
+
+            /* Sorting
+	---------------------------------------------------------------------- */
+
+            // Document order sorting
+            sortOrder = hasCompare ?
+                function (a, b) {
+
+                    // Flag for duplicate removal
+                    if (a === b) {
+                        hasDuplicate = true;
+                        return 0;
+                    }
+
+                    // Sort on method existence if only one input has compareDocumentPosition
+                    var compare = !a.compareDocumentPosition - !b.compareDocumentPosition;
+                    if (compare) {
+                        return compare;
+                    }
+
+                    // Calculate position if both inputs belong to the same document
+                    compare = (a.ownerDocument || a) === (b.ownerDocument || b) ?
+                        a.compareDocumentPosition(b) :
+
+                        // Otherwise we know they are disconnected
+                        1;
+
+                    // Disconnected nodes
+                    if (compare & 1 ||
+                        (!support.sortDetached && b.compareDocumentPosition(a) === compare)) {
+
+                        // Choose the first element that is related to our preferred document
+                        if (a === document || a.ownerDocument === preferredDoc && contains(preferredDoc, a)) {
+                            return -1;
+                        }
+                        if (b === document || b.ownerDocument === preferredDoc && contains(preferredDoc, b)) {
+                            return 1;
+                        }
+
+                        // Maintain original order
+                        return sortInput ?
+                            (indexOf(sortInput, a) - indexOf(sortInput, b)) :
+                            0;
+                    }
+
+                    return compare & 4 ? -1 : 1;
+                } :
+                function (a, b) {
+                    // Exit early if the nodes are identical
+                    if (a === b) {
+                        hasDuplicate = true;
+                        return 0;
+                    }
+
+                    var cur,
+                        i = 0,
+                        aup = a.parentNode,
+                        bup = b.parentNode,
+                        ap = [a],
+                        bp = [b];
+
+                    // Parentless nodes are either documents or disconnected
+                    if (!aup || !bup) {
+                        return a === document ? -1 :
+                            b === document ? 1 :
+                                aup ? -1 :
+                                    bup ? 1 :
+                                        sortInput ?
+                                            (indexOf(sortInput, a) - indexOf(sortInput, b)) :
+                                            0;
+
+                        // If the nodes are siblings, we can do a quick check
+                    } else if (aup === bup) {
+                        return siblingCheck(a, b);
+                    }
+
+                    // Otherwise we need full lists of their ancestors for comparison
+                    cur = a;
+                    while ((cur = cur.parentNode)) {
+                        ap.unshift(cur);
+                    }
+                    cur = b;
+                    while ((cur = cur.parentNode)) {
+                        bp.unshift(cur);
+                    }
+
+                    // Walk down the tree looking for a discrepancy
+                    while (ap[i] === bp[i]) {
+                        i++;
+                    }
+
+                    return i ?
+                        // Do a sibling check if the nodes have a common ancestor
+                        siblingCheck(ap[i], bp[i]) :
+
+                        // Otherwise nodes in our document sort first
+                        ap[i] === preferredDoc ? -1 :
+                            bp[i] === preferredDoc ? 1 :
+                                0;
+                };
+
+            return document;
+        };
+
+        Sizzle.matches = function (expr, elements) {
+            return Sizzle(expr, null, null, elements);
+        };
+
+        Sizzle.matchesSelector = function (elem, expr) {
+            // Set document vars if needed
+            if ((elem.ownerDocument || elem) !== document) {
+                setDocument(elem);
+            }
+
+            // Make sure that attribute selectors are quoted
+            expr = expr.replace(rattributeQuotes, "='$1']");
+
+            if (support.matchesSelector && documentIsHTML &&
+                !compilerCache[expr + " "] &&
+                (!rbuggyMatches || !rbuggyMatches.test(expr)) &&
+                (!rbuggyQSA || !rbuggyQSA.test(expr))) {
+
+                try {
+                    var ret = matches.call(elem, expr);
+
+                    // IE 9's matchesSelector returns false on disconnected nodes
+                    if (ret || support.disconnectedMatch ||
+                        // As well, disconnected nodes are said to be in a document
+                        // fragment in IE 9
+                        elem.document && elem.document.nodeType !== 11) {
+                        return ret;
+                    }
+                } catch (e) {
+                }
+            }
+
+            return Sizzle(expr, document, null, [elem]).length > 0;
+        };
+
+        Sizzle.contains = function (context, elem) {
+            // Set document vars if needed
+            if ((context.ownerDocument || context) !== document) {
+                setDocument(context);
+            }
+            return contains(context, elem);
+        };
+
+        Sizzle.attr = function (elem, name) {
+            // Set document vars if needed
+            if ((elem.ownerDocument || elem) !== document) {
+                setDocument(elem);
+            }
+
+            var fn = Expr.attrHandle[name.toLowerCase()],
+                // Don't get fooled by Object.prototype properties (jQuery #13807)
+                val = fn && hasOwn.call(Expr.attrHandle, name.toLowerCase()) ?
+                    fn(elem, name, !documentIsHTML) :
+                    undefined;
+
+            return val !== undefined ?
+                val :
+                support.attributes || !documentIsHTML ?
+                    elem.getAttribute(name) :
+                    (val = elem.getAttributeNode(name)) && val.specified ?
+                        val.value :
+                        null;
+        };
+
+        Sizzle.escape = function (sel) {
+            return (sel + "").replace(rcssescape, fcssescape);
+        };
+
+        Sizzle.error = function (msg) {
+            throw new Error("Syntax error, unrecognized expression: " + msg);
+        };
+
+        /**
+         * Document sorting and removing duplicates
+         * @param {ArrayLike} results
+         */
+        Sizzle.uniqueSort = function (results) {
+            var elem,
+                duplicates = [],
+                j = 0,
+                i = 0;
+
+            // Unless we *know* we can detect duplicates, assume their presence
+            hasDuplicate = !support.detectDuplicates;
+            sortInput = !support.sortStable && results.slice(0);
+            results.sort(sortOrder);
+
+            if (hasDuplicate) {
+                while ((elem = results[i++])) {
+                    if (elem === results[i]) {
+                        j = duplicates.push(i);
+                    }
+                }
+                while (j--) {
+                    results.splice(duplicates[j], 1);
+                }
+            }
+
+            // Clear input after sorting to release objects
+            // See https://github.com/jquery/sizzle/pull/225
+            sortInput = null;
+
+            return results;
+        };
+
+        /**
+         * Utility function for retrieving the text value of an array of DOM nodes
+         * @param {Array|Element} elem
+         */
+        getText = Sizzle.getText = function (elem) {
+            var node,
+                ret = "",
+                i = 0,
+                nodeType = elem.nodeType;
+
+            if (!nodeType) {
+                // If no nodeType, this is expected to be an array
+                while ((node = elem[i++])) {
+                    // Do not traverse comment nodes
+                    ret += getText(node);
+                }
+            } else if (nodeType === 1 || nodeType === 9 || nodeType === 11) {
+                // Use textContent for elements
+                // innerText usage removed for consistency of new lines (jQuery #11153)
+                if (typeof elem.textContent === "string") {
+                    return elem.textContent;
+                } else {
+                    // Traverse its children
+                    for (elem = elem.firstChild; elem; elem = elem.nextSibling) {
+                        ret += getText(elem);
+                    }
+                }
+            } else if (nodeType === 3 || nodeType === 4) {
+                return elem.nodeValue;
+            }
+            // Do not include comment or processing instruction nodes
+
+            return ret;
+        };
+
+        Expr = Sizzle.selectors = {
+
+            // Can be adjusted by the user
+            cacheLength: 50,
+
+            createPseudo: markFunction,
+
+            match: matchExpr,
+
+            attrHandle: {},
+
+            find: {},
+
+            relative: {
+                ">": {dir: "parentNode", first: true},
+                " ": {dir: "parentNode"},
+                "+": {dir: "previousSibling", first: true},
+                "~": {dir: "previousSibling"}
+            },
+
+            preFilter: {
+                "ATTR": function (match) {
+                    match[1] = match[1].replace(runescape, funescape);
+
+                    // Move the given value to match[3] whether quoted or unquoted
+                    match[3] = (match[3] || match[4] || match[5] || "").replace(runescape, funescape);
+
+                    if (match[2] === "~=") {
+                        match[3] = " " + match[3] + " ";
+                    }
+
+                    return match.slice(0, 4);
+                },
+
+                "CHILD": function (match) {
+                    /* matches from matchExpr["CHILD"]
+				1 type (only|nth|...)
+				2 what (child|of-type)
+				3 argument (even|odd|\d*|\d*n([+-]\d+)?|...)
+				4 xn-component of xn+y argument ([+-]?\d*n|)
+				5 sign of xn-component
+				6 x of xn-component
+				7 sign of y-component
+				8 y of y-component
+			*/
+                    match[1] = match[1].toLowerCase();
+
+                    if (match[1].slice(0, 3) === "nth") {
+                        // nth-* requires argument
+                        if (!match[3]) {
+                            Sizzle.error(match[0]);
+                        }
+
+                        // numeric x and y parameters for Expr.filter.CHILD
+                        // remember that false/true cast respectively to 0/1
+                        match[4] = +(match[4] ? match[5] + (match[6] || 1) : 2 * (match[3] === "even" || match[3] === "odd"));
+                        match[5] = +((match[7] + match[8]) || match[3] === "odd");
+
+                        // other types prohibit arguments
+                    } else if (match[3]) {
+                        Sizzle.error(match[0]);
+                    }
+
+                    return match;
+                },
+
+                "PSEUDO": function (match) {
+                    var excess,
+                        unquoted = !match[6] && match[2];
+
+                    if (matchExpr["CHILD"].test(match[0])) {
+                        return null;
+                    }
+
+                    // Accept quoted arguments as-is
+                    if (match[3]) {
+                        match[2] = match[4] || match[5] || "";
+
+                        // Strip excess characters from unquoted arguments
+                    } else if (unquoted && rpseudo.test(unquoted) &&
+                        // Get excess from tokenize (recursively)
+                        (excess = tokenize(unquoted, true)) &&
+                        // advance to the next closing parenthesis
+                        (excess = unquoted.indexOf(")", unquoted.length - excess) - unquoted.length)) {
+
+                        // excess is a negative index
+                        match[0] = match[0].slice(0, excess);
+                        match[2] = unquoted.slice(0, excess);
+                    }
+
+                    // Return only captures needed by the pseudo filter method (type and argument)
+                    return match.slice(0, 3);
+                }
+            },
+
+            filter: {
+
+                "TAG": function (nodeNameSelector) {
+                    var nodeName = nodeNameSelector.replace(runescape, funescape).toLowerCase();
+                    return nodeNameSelector === "*" ?
+                        function () {
+                            return true;
+                        } :
+                        function (elem) {
+                            return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;
+                        };
+                },
+
+                "CLASS": function (className) {
+                    var pattern = classCache[className + " "];
+
+                    return pattern ||
+                        (pattern = new RegExp("(^|" + whitespace + ")" + className + "(" + whitespace + "|$)")) &&
+                        classCache(className, function (elem) {
+                            return pattern.test(typeof elem.className === "string" && elem.className || typeof elem.getAttribute !== "undefined" && elem.getAttribute("class") || "");
+                        });
+                },
+
+                "ATTR": function (name, operator, check) {
+                    return function (elem) {
+                        var result = Sizzle.attr(elem, name);
+
+                        if (result == null) {
+                            return operator === "!=";
+                        }
+                        if (!operator) {
+                            return true;
+                        }
+
+                        result += "";
+
+                        return operator === "=" ? result === check :
+                            operator === "!=" ? result !== check :
+                                operator === "^=" ? check && result.indexOf(check) === 0 :
+                                    operator === "*=" ? check && result.indexOf(check) > -1 :
+                                        operator === "$=" ? check && result.slice(-check.length) === check :
+                                            operator === "~=" ? (" " + result.replace(rwhitespace, " ") + " ").indexOf(check) > -1 :
+                                                operator === "|=" ? result === check || result.slice(0, check.length + 1) === check + "-" :
+                                                    false;
+                    };
+                },
+
+                "CHILD": function (type, what, argument, first, last) {
+                    var simple = type.slice(0, 3) !== "nth",
+                        forward = type.slice(-4) !== "last",
+                        ofType = what === "of-type";
+
+                    return first === 1 && last === 0 ?
+
+                        // Shortcut for :nth-*(n)
+                        function (elem) {
+                            return !!elem.parentNode;
+                        } :
+
+                        function (elem, context, xml) {
+                            var cache, uniqueCache, outerCache, node, nodeIndex, start,
+                                dir = simple !== forward ? "nextSibling" : "previousSibling",
+                                parent = elem.parentNode,
+                                name = ofType && elem.nodeName.toLowerCase(),
+                                useCache = !xml && !ofType,
+                                diff = false;
+
+                            if (parent) {
+
+                                // :(first|last|only)-(child|of-type)
+                                if (simple) {
+                                    while (dir) {
+                                        node = elem;
+                                        while ((node = node[dir])) {
+                                            if (ofType ?
+                                                node.nodeName.toLowerCase() === name :
+                                                node.nodeType === 1) {
+
+                                                return false;
+                                            }
+                                        }
+                                        // Reverse direction for :only-* (if we haven't yet done so)
+                                        start = dir = type === "only" && !start && "nextSibling";
+                                    }
+                                    return true;
+                                }
+
+                                start = [forward ? parent.firstChild : parent.lastChild];
+
+                                // non-xml :nth-child(...) stores cache data on `parent`
+                                if (forward && useCache) {
+
+                                    // Seek `elem` from a previously-cached index
+
+                                    // ...in a gzip-friendly way
+                                    node = parent;
+                                    outerCache = node[expando] || (node[expando] = {});
+
+                                    // Support: IE <9 only
+                                    // Defend against cloned attroperties (jQuery gh-1709)
+                                    uniqueCache = outerCache[node.uniqueID] ||
+                                        (outerCache[node.uniqueID] = {});
+
+                                    cache = uniqueCache[type] || [];
+                                    nodeIndex = cache[0] === dirruns && cache[1];
+                                    diff = nodeIndex && cache[2];
+                                    node = nodeIndex && parent.childNodes[nodeIndex];
+
+                                    while ((node = ++nodeIndex && node && node[dir] ||
+
+                                        // Fallback to seeking `elem` from the start
+                                        (diff = nodeIndex = 0) || start.pop())) {
+
+                                        // When found, cache indexes on `parent` and break
+                                        if (node.nodeType === 1 && ++diff && node === elem) {
+                                            uniqueCache[type] = [dirruns, nodeIndex, diff];
+                                            break;
+                                        }
+                                    }
+
+                                } else {
+                                    // Use previously-cached element index if available
+                                    if (useCache) {
+                                        // ...in a gzip-friendly way
+                                        node = elem;
+                                        outerCache = node[expando] || (node[expando] = {});
+
+                                        // Support: IE <9 only
+                                        // Defend against cloned attroperties (jQuery gh-1709)
+                                        uniqueCache = outerCache[node.uniqueID] ||
+                                            (outerCache[node.uniqueID] = {});
+
+                                        cache = uniqueCache[type] || [];
+                                        nodeIndex = cache[0] === dirruns && cache[1];
+                                        diff = nodeIndex;
+                                    }
+
+                                    // xml :nth-child(...)
+                                    // or :nth-last-child(...) or :nth(-last)?-of-type(...)
+                                    if (diff === false) {
+                                        // Use the same loop as above to seek `elem` from the start
+                                        while ((node = ++nodeIndex && node && node[dir] ||
+                                            (diff = nodeIndex = 0) || start.pop())) {
+
+                                            if ((ofType ?
+                                                node.nodeName.toLowerCase() === name :
+                                                node.nodeType === 1) &&
+                                                ++diff) {
+
+                                                // Cache the index of each encountered element
+                                                if (useCache) {
+                                                    outerCache = node[expando] || (node[expando] = {});
+
+                                                    // Support: IE <9 only
+                                                    // Defend against cloned attroperties (jQuery gh-1709)
+                                                    uniqueCache = outerCache[node.uniqueID] ||
+                                                        (outerCache[node.uniqueID] = {});
+
+                                                    uniqueCache[type] = [dirruns, diff];
+                                                }
+
+                                                if (node === elem) {
+                                                    break;
+                                                }
+                                            }
+                                        }
+                                    }
+                                }
+
+                                // Incorporate the offset, then check against cycle size
+                                diff -= last;
+                                return diff === first || (diff % first === 0 && diff / first >= 0);
+                            }
+                        };
+                },
+
+                "PSEUDO": function (pseudo, argument) {
+                    // pseudo-class names are case-insensitive
+                    // http://www.w3.org/TR/selectors/#pseudo-classes
+                    // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters
+                    // Remember that setFilters inherits from pseudos
+                    var args,
+                        fn = Expr.pseudos[pseudo] || Expr.setFilters[pseudo.toLowerCase()] ||
+                            Sizzle.error("unsupported pseudo: " + pseudo);
+
+                    // The user may use createPseudo to indicate that
+                    // arguments are needed to create the filter function
+                    // just as Sizzle does
+                    if (fn[expando]) {
+                        return fn(argument);
+                    }
+
+                    // But maintain support for old signatures
+                    if (fn.length > 1) {
+                        args = [pseudo, pseudo, "", argument];
+                        return Expr.setFilters.hasOwnProperty(pseudo.toLowerCase()) ?
+                            markFunction(function (seed, matches) {
+                                var idx,
+                                    matched = fn(seed, argument),
+                                    i = matched.length;
+                                while (i--) {
+                                    idx = indexOf(seed, matched[i]);
+                                    seed[idx] = !(matches[idx] = matched[i]);
+                                }
+                            }) :
+                            function (elem) {
+                                return fn(elem, 0, args);
+                            };
+                    }
+
+                    return fn;
+                }
+            },
+
+            pseudos: {
+                // Potentially complex pseudos
+                "not": markFunction(function (selector) {
+                    // Trim the selector passed to compile
+                    // to avoid treating leading and trailing
+                    // spaces as combinators
+                    var input = [],
+                        results = [],
+                        matcher = compile(selector.replace(rtrim, "$1"));
+
+                    return matcher[expando] ?
+                        markFunction(function (seed, matches, context, xml) {
+                            var elem,
+                                unmatched = matcher(seed, null, xml, []),
+                                i = seed.length;
+
+                            // Match elements unmatched by `matcher`
+                            while (i--) {
+                                if ((elem = unmatched[i])) {
+                                    seed[i] = !(matches[i] = elem);
+                                }
+                            }
+                        }) :
+                        function (elem, context, xml) {
+                            input[0] = elem;
+                            matcher(input, null, xml, results);
+                            // Don't keep the element (issue #299)
+                            input[0] = null;
+                            return !results.pop();
+                        };
+                }),
+
+                "has": markFunction(function (selector) {
+                    return function (elem) {
+                        return Sizzle(selector, elem).length > 0;
+                    };
+                }),
+
+                "contains": markFunction(function (text) {
+                    text = text.replace(runescape, funescape);
+                    return function (elem) {
+                        return (elem.textContent || elem.innerText || getText(elem)).indexOf(text) > -1;
+                    };
+                }),
+
+                // "Whether an element is represented by a :lang() selector
+                // is based solely on the element's language value
+                // being equal to the identifier C,
+                // or beginning with the identifier C immediately followed by "-".
+                // The matching of C against the element's language value is performed case-insensitively.
+                // The identifier C does not have to be a valid language name."
+                // http://www.w3.org/TR/selectors/#lang-pseudo
+                "lang": markFunction(function (lang) {
+                    // lang value must be a valid identifier
+                    if (!ridentifier.test(lang || "")) {
+                        Sizzle.error("unsupported lang: " + lang);
+                    }
+                    lang = lang.replace(runescape, funescape).toLowerCase();
+                    return function (elem) {
+                        var elemLang;
+                        do {
+                            if ((elemLang = documentIsHTML ?
+                                elem.lang :
+                                elem.getAttribute("xml:lang") || elem.getAttribute("lang"))) {
+
+                                elemLang = elemLang.toLowerCase();
+                                return elemLang === lang || elemLang.indexOf(lang + "-") === 0;
+                            }
+                        } while ((elem = elem.parentNode) && elem.nodeType === 1);
+                        return false;
+                    };
+                }),
+
+                // Miscellaneous
+                "target": function (elem) {
+                    var hash = window.location && window.location.hash;
+                    return hash && hash.slice(1) === elem.id;
+                },
+
+                "root": function (elem) {
+                    return elem === docElem;
+                },
+
+                "focus": function (elem) {
+                    return elem === document.activeElement && (!document.hasFocus || document.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex);
+                },
+
+                // Boolean properties
+                "enabled": createDisabledPseudo(false),
+                "disabled": createDisabledPseudo(true),
+
+                "checked": function (elem) {
+                    // In CSS3, :checked should return both checked and selected elements
+                    // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
+                    var nodeName = elem.nodeName.toLowerCase();
+                    return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected);
+                },
+
+                "selected": function (elem) {
+                    // Accessing this property makes selected-by-default
+                    // options in Safari work properly
+                    if (elem.parentNode) {
+                        elem.parentNode.selectedIndex;
+                    }
+
+                    return elem.selected === true;
+                },
+
+                // Contents
+                "empty": function (elem) {
+                    // http://www.w3.org/TR/selectors/#empty-pseudo
+                    // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),
+                    //   but not by others (comment: 8; processing instruction: 7; etc.)
+                    // nodeType < 6 works because attributes (2) do not appear as children
+                    for (elem = elem.firstChild; elem; elem = elem.nextSibling) {
+                        if (elem.nodeType < 6) {
+                            return false;
+                        }
+                    }
+                    return true;
+                },
+
+                "parent": function (elem) {
+                    return !Expr.pseudos["empty"](elem);
+                },
+
+                // Element/input types
+                "header": function (elem) {
+                    return rheader.test(elem.nodeName);
+                },
+
+                "input": function (elem) {
+                    return rinputs.test(elem.nodeName);
+                },
+
+                "button": function (elem) {
+                    var name = elem.nodeName.toLowerCase();
+                    return name === "input" && elem.type === "button" || name === "button";
+                },
+
+                "text": function (elem) {
+                    var attr;
+                    return elem.nodeName.toLowerCase() === "input" &&
+                        elem.type === "text" &&
+
+                        // Support: IE<8
+                        // New HTML5 attribute values (e.g., "search") appear with elem.type === "text"
+                        ((attr = elem.getAttribute("type")) == null || attr.toLowerCase() === "text");
+                },
+
+                // Position-in-collection
+                "first": createPositionalPseudo(function () {
+                    return [0];
+                }),
+
+                "last": createPositionalPseudo(function (matchIndexes, length) {
+                    return [length - 1];
+                }),
+
+                "eq": createPositionalPseudo(function (matchIndexes, length, argument) {
+                    return [argument < 0 ? argument + length : argument];
+                }),
+
+                "even": createPositionalPseudo(function (matchIndexes, length) {
+                    var i = 0;
+                    for (; i < length; i += 2) {
+                        matchIndexes.push(i);
+                    }
+                    return matchIndexes;
+                }),
+
+                "odd": createPositionalPseudo(function (matchIndexes, length) {
+                    var i = 1;
+                    for (; i < length; i += 2) {
+                        matchIndexes.push(i);
+                    }
+                    return matchIndexes;
+                }),
+
+                "lt": createPositionalPseudo(function (matchIndexes, length, argument) {
+                    var i = argument < 0 ? argument + length : argument;
+                    for (; --i >= 0;) {
+                        matchIndexes.push(i);
+                    }
+                    return matchIndexes;
+                }),
+
+                "gt": createPositionalPseudo(function (matchIndexes, length, argument) {
+                    var i = argument < 0 ? argument + length : argument;
+                    for (; ++i < length;) {
+                        matchIndexes.push(i);
+                    }
+                    return matchIndexes;
+                })
+            }
+        };
+
+        Expr.pseudos["nth"] = Expr.pseudos["eq"];
+
+// Add button/input type pseudos
+        for (i in {radio: true, checkbox: true, file: true, password: true, image: true}) {
+            Expr.pseudos[i] = createInputPseudo(i);
+        }
+        for (i in {submit: true, reset: true}) {
+            Expr.pseudos[i] = createButtonPseudo(i);
+        }
+
+// Easy API for creating new setFilters
+        function setFilters() {
+        }
+
+        setFilters.prototype = Expr.filters = Expr.pseudos;
+        Expr.setFilters = new setFilters();
+
+        tokenize = Sizzle.tokenize = function (selector, parseOnly) {
+            var matched, match, tokens, type,
+                soFar, groups, preFilters,
+                cached = tokenCache[selector + " "];
+
+            if (cached) {
+                return parseOnly ? 0 : cached.slice(0);
+            }
+
+            soFar = selector;
+            groups = [];
+            preFilters = Expr.preFilter;
+
+            while (soFar) {
+
+                // Comma and first run
+                if (!matched || (match = rcomma.exec(soFar))) {
+                    if (match) {
+                        // Don't consume trailing commas as valid
+                        soFar = soFar.slice(match[0].length) || soFar;
+                    }
+                    groups.push((tokens = []));
+                }
+
+                matched = false;
+
+                // Combinators
+                if ((match = rcombinators.exec(soFar))) {
+                    matched = match.shift();
+                    tokens.push({
+                        value: matched,
+                        // Cast descendant combinators to space
+                        type: match[0].replace(rtrim, " ")
+                    });
+                    soFar = soFar.slice(matched.length);
+                }
+
+                // Filters
+                for (type in Expr.filter) {
+                    if ((match = matchExpr[type].exec(soFar)) && (!preFilters[type] ||
+                        (match = preFilters[type](match)))) {
+                        matched = match.shift();
+                        tokens.push({
+                            value: matched,
+                            type: type,
+                            matches: match
+                        });
+                        soFar = soFar.slice(matched.length);
+                    }
+                }
+
+                if (!matched) {
+                    break;
+                }
+            }
+
+            // Return the length of the invalid excess
+            // if we're just parsing
+            // Otherwise, throw an error or return tokens
+            return parseOnly ?
+                soFar.length :
+                soFar ?
+                    Sizzle.error(selector) :
+                    // Cache the tokens
+                    tokenCache(selector, groups).slice(0);
+        };
+
+        function toSelector(tokens) {
+            var i = 0,
+                len = tokens.length,
+                selector = "";
+            for (; i < len; i++) {
+                selector += tokens[i].value;
+            }
+            return selector;
+        }
+
+        function addCombinator(matcher, combinator, base) {
+            var dir = combinator.dir,
+                skip = combinator.next,
+                key = skip || dir,
+                checkNonElements = base && key === "parentNode",
+                doneName = done++;
+
+            return combinator.first ?
+                // Check against closest ancestor/preceding element
+                function (elem, context, xml) {
+                    while ((elem = elem[dir])) {
+                        if (elem.nodeType === 1 || checkNonElements) {
+                            return matcher(elem, context, xml);
+                        }
+                    }
+                    return false;
+                } :
+
+                // Check against all ancestor/preceding elements
+                function (elem, context, xml) {
+                    var oldCache, uniqueCache, outerCache,
+                        newCache = [dirruns, doneName];
+
+                    // We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching
+                    if (xml) {
+                        while ((elem = elem[dir])) {
+                            if (elem.nodeType === 1 || checkNonElements) {
+                                if (matcher(elem, context, xml)) {
+                                    return true;
+                                }
+                            }
+                        }
+                    } else {
+                        while ((elem = elem[dir])) {
+                            if (elem.nodeType === 1 || checkNonElements) {
+                                outerCache = elem[expando] || (elem[expando] = {});
+
+                                // Support: IE <9 only
+                                // Defend against cloned attroperties (jQuery gh-1709)
+                                uniqueCache = outerCache[elem.uniqueID] || (outerCache[elem.uniqueID] = {});
+
+                                if (skip && skip === elem.nodeName.toLowerCase()) {
+                                    elem = elem[dir] || elem;
+                                } else if ((oldCache = uniqueCache[key]) &&
+                                    oldCache[0] === dirruns && oldCache[1] === doneName) {
+
+                                    // Assign to newCache so results back-propagate to previous elements
+                                    return (newCache[2] = oldCache[2]);
+                                } else {
+                                    // Reuse newcache so results back-propagate to previous elements
+                                    uniqueCache[key] = newCache;
+
+                                    // A match means we're done; a fail means we have to keep checking
+                                    if ((newCache[2] = matcher(elem, context, xml))) {
+                                        return true;
+                                    }
+                                }
+                            }
+                        }
+                    }
+                    return false;
+                };
+        }
+
+        function elementMatcher(matchers) {
+            return matchers.length > 1 ?
+                function (elem, context, xml) {
+                    var i = matchers.length;
+                    while (i--) {
+                        if (!matchers[i](elem, context, xml)) {
+                            return false;
+                        }
+                    }
+                    return true;
+                } :
+                matchers[0];
+        }
+
+        function multipleContexts(selector, contexts, results) {
+            var i = 0,
+                len = contexts.length;
+            for (; i < len; i++) {
+                Sizzle(selector, contexts[i], results);
+            }
+            return results;
+        }
+
+        function condense(unmatched, map, filter, context, xml) {
+            var elem,
+                newUnmatched = [],
+                i = 0,
+                len = unmatched.length,
+                mapped = map != null;
+
+            for (; i < len; i++) {
+                if ((elem = unmatched[i])) {
+                    if (!filter || filter(elem, context, xml)) {
+                        newUnmatched.push(elem);
+                        if (mapped) {
+                            map.push(i);
+                        }
+                    }
+                }
+            }
+
+            return newUnmatched;
+        }
+
+        function setMatcher(preFilter, selector, matcher, postFilter, postFinder, postSelector) {
+            if (postFilter && !postFilter[expando]) {
+                postFilter = setMatcher(postFilter);
+            }
+            if (postFinder && !postFinder[expando]) {
+                postFinder = setMatcher(postFinder, postSelector);
+            }
+            return markFunction(function (seed, results, context, xml) {
+                var temp, i, elem,
+                    preMap = [],
+                    postMap = [],
+                    preexisting = results.length,
+
+                    // Get initial elements from seed or context
+                    elems = seed || multipleContexts(selector || "*", context.nodeType ? [context] : context, []),
+
+                    // Prefilter to get matcher input, preserving a map for seed-results synchronization
+                    matcherIn = preFilter && (seed || !selector) ?
+                        condense(elems, preMap, preFilter, context, xml) :
+                        elems,
+
+                    matcherOut = matcher ?
+                        // If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,
+                        postFinder || (seed ? preFilter : preexisting || postFilter) ?
+
+                            // ...intermediate processing is necessary
+                            [] :
+
+                            // ...otherwise use results directly
+                            results :
+                        matcherIn;
+
+                // Find primary matches
+                if (matcher) {
+                    matcher(matcherIn, matcherOut, context, xml);
+                }
+
+                // Apply postFilter
+                if (postFilter) {
+                    temp = condense(matcherOut, postMap);
+                    postFilter(temp, [], context, xml);
+
+                    // Un-match failing elements by moving them back to matcherIn
+                    i = temp.length;
+                    while (i--) {
+                        if ((elem = temp[i])) {
+                            matcherOut[postMap[i]] = !(matcherIn[postMap[i]] = elem);
+                        }
+                    }
+                }
+
+                if (seed) {
+                    if (postFinder || preFilter) {
+                        if (postFinder) {
+                            // Get the final matcherOut by condensing this intermediate into postFinder contexts
+                            temp = [];
+                            i = matcherOut.length;
+                            while (i--) {
+                                if ((elem = matcherOut[i])) {
+                                    // Restore matcherIn since elem is not yet a final match
+                                    temp.push((matcherIn[i] = elem));
+                                }
+                            }
+                            postFinder(null, (matcherOut = []), temp, xml);
+                        }
+
+                        // Move matched elements from seed to results to keep them synchronized
+                        i = matcherOut.length;
+                        while (i--) {
+                            if ((elem = matcherOut[i]) &&
+                                (temp = postFinder ? indexOf(seed, elem) : preMap[i]) > -1) {
+
+                                seed[temp] = !(results[temp] = elem);
+                            }
+                        }
+                    }
+
+                    // Add elements to results, through postFinder if defined
+                } else {
+                    matcherOut = condense(
+                        matcherOut === results ?
+                            matcherOut.splice(preexisting, matcherOut.length) :
+                            matcherOut
+                    );
+                    if (postFinder) {
+                        postFinder(null, results, matcherOut, xml);
+                    } else {
+                        push.apply(results, matcherOut);
+                    }
+                }
+            });
+        }
+
+        function matcherFromTokens(tokens) {
+            var checkContext, matcher, j,
+                len = tokens.length,
+                leadingRelative = Expr.relative[tokens[0].type],
+                implicitRelative = leadingRelative || Expr.relative[" "],
+                i = leadingRelative ? 1 : 0,
+
+                // The foundational matcher ensures that elements are reachable from top-level context(s)
+                matchContext = addCombinator(function (elem) {
+                    return elem === checkContext;
+                }, implicitRelative, true),
+                matchAnyContext = addCombinator(function (elem) {
+                    return indexOf(checkContext, elem) > -1;
+                }, implicitRelative, true),
+                matchers = [function (elem, context, xml) {
+                    var ret = (!leadingRelative && (xml || context !== outermostContext)) || (
+                        (checkContext = context).nodeType ?
+                            matchContext(elem, context, xml) :
+                            matchAnyContext(elem, context, xml));
+                    // Avoid hanging onto element (issue #299)
+                    checkContext = null;
+                    return ret;
+                }];
+
+            for (; i < len; i++) {
+                if ((matcher = Expr.relative[tokens[i].type])) {
+                    matchers = [addCombinator(elementMatcher(matchers), matcher)];
+                } else {
+                    matcher = Expr.filter[tokens[i].type].apply(null, tokens[i].matches);
+
+                    // Return special upon seeing a positional matcher
+                    if (matcher[expando]) {
+                        // Find the next relative operator (if any) for proper handling
+                        j = ++i;
+                        for (; j < len; j++) {
+                            if (Expr.relative[tokens[j].type]) {
+                                break;
+                            }
+                        }
+                        return setMatcher(
+                            i > 1 && elementMatcher(matchers),
+                            i > 1 && toSelector(
+                            // If the preceding token was a descendant combinator, insert an implicit any-element `*`
+                            tokens.slice(0, i - 1).concat({value: tokens[i - 2].type === " " ? "*" : ""})
+                            ).replace(rtrim, "$1"),
+                            matcher,
+                            i < j && matcherFromTokens(tokens.slice(i, j)),
+                            j < len && matcherFromTokens((tokens = tokens.slice(j))),
+                            j < len && toSelector(tokens)
+                        );
+                    }
+                    matchers.push(matcher);
+                }
+            }
+
+            return elementMatcher(matchers);
+        }
+
+        function matcherFromGroupMatchers(elementMatchers, setMatchers) {
+            var bySet = setMatchers.length > 0,
+                byElement = elementMatchers.length > 0,
+                superMatcher = function (seed, context, xml, results, outermost) {
+                    var elem, j, matcher,
+                        matchedCount = 0,
+                        i = "0",
+                        unmatched = seed && [],
+                        setMatched = [],
+                        contextBackup = outermostContext,
+                        // We must always have either seed elements or outermost context
+                        elems = seed || byElement && Expr.find["TAG"]("*", outermost),
+                        // Use integer dirruns iff this is the outermost matcher
+                        dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.random() || 0.1),
+                        len = elems.length;
+
+                    if (outermost) {
+                        outermostContext = context === document || context || outermost;
+                    }
+
+                    // Add elements passing elementMatchers directly to results
+                    // Support: IE<9, Safari
+                    // Tolerate NodeList properties (IE: "length"; Safari: <number>) matching elements by id
+                    for (; i !== len && (elem = elems[i]) != null; i++) {
+                        if (byElement && elem) {
+                            j = 0;
+                            if (!context && elem.ownerDocument !== document) {
+                                setDocument(elem);
+                                xml = !documentIsHTML;
+                            }
+                            while ((matcher = elementMatchers[j++])) {
+                                if (matcher(elem, context || document, xml)) {
+                                    results.push(elem);
+                                    break;
+                                }
+                            }
+                            if (outermost) {
+                                dirruns = dirrunsUnique;
+                            }
+                        }
+
+                        // Track unmatched elements for set filters
+                        if (bySet) {
+                            // They will have gone through all possible matchers
+                            if ((elem = !matcher && elem)) {
+                                matchedCount--;
+                            }
+
+                            // Lengthen the array for every element, matched or not
+                            if (seed) {
+                                unmatched.push(elem);
+                            }
+                        }
+                    }
+
+                    // `i` is now the count of elements visited above, and adding it to `matchedCount`
+                    // makes the latter nonnegative.
+                    matchedCount += i;
+
+                    // Apply set filters to unmatched elements
+                    // NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`
+                    // equals `i`), unless we didn't visit _any_ elements in the above loop because we have
+                    // no element matchers and no seed.
+                    // Incrementing an initially-string "0" `i` allows `i` to remain a string only in that
+                    // case, which will result in a "00" `matchedCount` that differs from `i` but is also
+                    // numerically zero.
+                    if (bySet && i !== matchedCount) {
+                        j = 0;
+                        while ((matcher = setMatchers[j++])) {
+                            matcher(unmatched, setMatched, context, xml);
+                        }
+
+                        if (seed) {
+                            // Reintegrate element matches to eliminate the need for sorting
+                            if (matchedCount > 0) {
+                                while (i--) {
+                                    if (!(unmatched[i] || setMatched[i])) {
+                                        setMatched[i] = pop.call(results);
+                                    }
+                                }
+                            }
+
+                            // Discard index placeholder values to get only actual matches
+                            setMatched = condense(setMatched);
+                        }
+
+                        // Add matches to results
+                        push.apply(results, setMatched);
+
+                        // Seedless set matches succeeding multiple successful matchers stipulate sorting
+                        if (outermost && !seed && setMatched.length > 0 &&
+                            (matchedCount + setMatchers.length) > 1) {
+
+                            Sizzle.uniqueSort(results);
+                        }
+                    }
+
+                    // Override manipulation of globals by nested matchers
+                    if (outermost) {
+                        dirruns = dirrunsUnique;
+                        outermostContext = contextBackup;
+                    }
+
+                    return unmatched;
+                };
+
+            return bySet ?
+                markFunction(superMatcher) :
+                superMatcher;
+        }
+
+        compile = Sizzle.compile = function (selector, match /* Internal Use Only */) {
+            var i,
+                setMatchers = [],
+                elementMatchers = [],
+                cached = compilerCache[selector + " "];
+
+            if (!cached) {
+                // Generate a function of recursive functions that can be used to check each element
+                if (!match) {
+                    match = tokenize(selector);
+                }
+                i = match.length;
+                while (i--) {
+                    cached = matcherFromTokens(match[i]);
+                    if (cached[expando]) {
+                        setMatchers.push(cached);
+                    } else {
+                        elementMatchers.push(cached);
+                    }
+                }
+
+                // Cache the compiled function
+                cached = compilerCache(selector, matcherFromGroupMatchers(elementMatchers, setMatchers));
+
+                // Save selector and tokenization
+                cached.selector = selector;
+            }
+            return cached;
+        };
+
+        /**
+         * A low-level selection function that works with Sizzle's compiled
+         *  selector functions
+         * @param {String|Function} selector A selector or a pre-compiled
+         *  selector function built with Sizzle.compile
+         * @param {Element} context
+         * @param {Array} [results]
+         * @param {Array} [seed] A set of elements to match against
+         */
+        select = Sizzle.select = function (selector, context, results, seed) {
+            var i, tokens, token, type, find,
+                compiled = typeof selector === "function" && selector,
+                match = !seed && tokenize((selector = compiled.selector || selector));
+
+            results = results || [];
+
+            // Try to minimize operations if there is only one selector in the list and no seed
+            // (the latter of which guarantees us context)
+            if (match.length === 1) {
+
+                // Reduce context if the leading compound selector is an ID
+                tokens = match[0] = match[0].slice(0);
+                if (tokens.length > 2 && (token = tokens[0]).type === "ID" &&
+                    context.nodeType === 9 && documentIsHTML && Expr.relative[tokens[1].type]) {
+
+                    context = (Expr.find["ID"](token.matches[0].replace(runescape, funescape), context) || [])[0];
+                    if (!context) {
+                        return results;
+
+                        // Precompiled matchers will still verify ancestry, so step up a level
+                    } else if (compiled) {
+                        context = context.parentNode;
+                    }
+
+                    selector = selector.slice(tokens.shift().value.length);
+                }
+
+                // Fetch a seed set for right-to-left matching
+                i = matchExpr["needsContext"].test(selector) ? 0 : tokens.length;
+                while (i--) {
+                    token = tokens[i];
+
+                    // Abort if we hit a combinator
+                    if (Expr.relative[(type = token.type)]) {
+                        break;
+                    }
+                    if ((find = Expr.find[type])) {
+                        // Search, expanding context for leading sibling combinators
+                        if ((seed = find(
+                            token.matches[0].replace(runescape, funescape),
+                            rsibling.test(tokens[0].type) && testContext(context.parentNode) || context
+                        ))) {
+
+                            // If seed is empty or no tokens remain, we can return early
+                            tokens.splice(i, 1);
+                            selector = seed.length && toSelector(tokens);
+                            if (!selector) {
+                                push.apply(results, seed);
+                                return results;
+                            }
+
+                            break;
+                        }
+                    }
+                }
+            }
+
+            // Compile and execute a filtering function if one is not provided
+            // Provide `match` to avoid retokenization if we modified the selector above
+            (compiled || compile(selector, match))(
+                seed,
+                context,
+                !documentIsHTML,
+                results,
+                !context || rsibling.test(selector) && testContext(context.parentNode) || context
+            );
+            return results;
+        };
+
+// One-time assignments
+
+// Sort stability
+        support.sortStable = expando.split("").sort(sortOrder).join("") === expando;
+
+// Support: Chrome 14-35+
+// Always assume duplicates if they aren't passed to the comparison function
+        support.detectDuplicates = !!hasDuplicate;
+
+// Initialize against the default document
+        setDocument();
+        
+        return Sizzle;
+
+    })(window);
+
+
+jQuery.find = Sizzle;
+jQuery.expr = Sizzle.selectors;
+
+// Deprecated
+jQuery.expr[":"] = jQuery.expr.pseudos;
+jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort;
+jQuery.text = Sizzle.getText;
+jQuery.isXMLDoc = Sizzle.isXML;
+jQuery.contains = Sizzle.contains;
+jQuery.escapeSelector = Sizzle.escape;
+
+
+var dir = function (elem, dir, until) {
+    var matched = [],
+        truncate = until !== undefined;
+
+    while ((elem = elem[dir]) && elem.nodeType !== 9) {
+        if (elem.nodeType === 1) {
+            if (truncate && jQuery(elem).is(until)) {
+                break;
+            }
+            matched.push(elem);
+        }
+    }
+    return matched;
+};
+
+
+var siblings = function (n, elem) {
+    var matched = [];
+
+    for (; n; n = n.nextSibling) {
+        if (n.nodeType === 1 && n !== elem) {
+            matched.push(n);
+        }
+    }
+
+    return matched;
+};
+
+
+var rneedsContext = jQuery.expr.match.needsContext;
+
+
+function nodeName(elem, name) {
+
+    return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();
+
+}
+var rsingleTag = (/^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i);
+
+
+// Implement the identical functionality for filter and not
+function winnow(elements, qualifier, not) {
+    if (isFunction(qualifier)) {
+        return jQuery.grep(elements, function (elem, i) {
+            return !!qualifier.call(elem, i, elem) !== not;
+        });
+    }
+
+    // Single element
+    if (qualifier.nodeType) {
+        return jQuery.grep(elements, function (elem) {
+            return (elem === qualifier) !== not;
+        });
+    }
+
+    // Arraylike of elements (jQuery, arguments, Array)
+    if (typeof qualifier !== "string") {
+        return jQuery.grep(elements, function (elem) {
+            return (indexOf.call(qualifier, elem) > -1) !== not;
+        });
+    }
+
+    // Filtered directly for both simple and complex selectors
+    return jQuery.filter(qualifier, elements, not);
+}
+
+jQuery.filter = function (expr, elems, not) {
+    var elem = elems[0];
+
+    if (not) {
+        expr = ":not(" + expr + ")";
+    }
+
+    if (elems.length === 1 && elem.nodeType === 1) {
+        return jQuery.find.matchesSelector(elem, expr) ? [elem] : [];
+    }
+
+    return jQuery.find.matches(expr, jQuery.grep(elems, function (elem) {
+        return elem.nodeType === 1;
+    }));
+};
+
+jQuery.fn.extend({
+    find: function (selector) {
+        var i, ret,
+            len = this.length,
+            self = this;
+
+        if (typeof selector !== "string") {
+            return this.pushStack(jQuery(selector).filter(function () {
+                for (i = 0; i < len; i++) {
+                    if (jQuery.contains(self[i], this)) {
+                        return true;
+                    }
+                }
+            }));
+        }
+
+        ret = this.pushStack([]);
+
+        for (i = 0; i < len; i++) {
+            jQuery.find(selector, self[i], ret);
+        }
+
+        return len > 1 ? jQuery.uniqueSort(ret) : ret;
+    },
+    filter: function (selector) {
+        return this.pushStack(winnow(this, selector || [], false));
+    },
+    not: function (selector) {
+        return this.pushStack(winnow(this, selector || [], true));
+    },
+    is: function (selector) {
+        return !!winnow(
+            this,
+
+            // If this is a positional/relative selector, check membership in the returned set
+            // so $("p:first").is("p:last") won't return true for a doc with two "p".
+            typeof selector === "string" && rneedsContext.test(selector) ?
+                jQuery(selector) :
+                selector || [],
+            false
+        ).length;
+    }
+});
+
+
+// Initialize a jQuery object
+
+
+// A central reference to the root jQuery(document)
+var rootjQuery,
+
+    // A simple way to check for HTML strings
+    // Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
+    // Strict HTML recognition (#11290: must start with <)
+    // Shortcut simple #id case for speed
+    rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/,
+
+    init$2 = jQuery.fn.init = function (selector, context, root) {
+        var match, elem;
+
+        // HANDLE: $(""), $(null), $(undefined), $(false)
+        if (!selector) {
+            return this;
+        }
+
+        // Method init() accepts an alternate rootjQuery
+        // so migrate can support jQuery.sub (gh-2101)
+        root = root || rootjQuery;
+
+        // Handle HTML strings
+        if (typeof selector === "string") {
+            if (selector[0] === "<" &&
+                selector[selector.length - 1] === ">" &&
+                selector.length >= 3) {
+
+                // Assume that strings that start and end with <> are HTML and skip the regex check
+                match = [null, selector, null];
+
+            } else {
+                match = rquickExpr.exec(selector);
+            }
+
+            // Match html or make sure no context is specified for #id
+            if (match && (match[1] || !context)) {
+
+                // HANDLE: $(html) -> $(array)
+                if (match[1]) {
+                    context = context instanceof jQuery ? context[0] : context;
+
+                    // Option to run scripts is true for back-compat
+                    // Intentionally let the error be thrown if parseHTML is not present
+                    jQuery.merge(this, jQuery.parseHTML(
+                        match[1],
+                        context && context.nodeType ? context.ownerDocument || context : document$1,
+                        true
+                    ));
+
+                    // HANDLE: $(html, props)
+                    if (rsingleTag.test(match[1]) && jQuery.isPlainObject(context)) {
+                        for (match in context) {
+
+                            // Properties of context are called as methods if possible
+                            if (isFunction(this[match])) {
+                                this[match](context[match]);
+
+                                // ...and otherwise set as attributes
+                            } else {
+                                this.attr(match, context[match]);
+                            }
+                        }
+                    }
+
+                    return this;
+
+                    // HANDLE: $(#id)
+                } else {
+                    elem = document$1.getElementById(match[2]);
+
+                    if (elem) {
+
+                        // Inject the element directly into the jQuery object
+                        this[0] = elem;
+                        this.length = 1;
+                    }
+                    return this;
+                }
+
+                // HANDLE: $(expr, $(...))
+            } else if (!context || context.jquery) {
+                return (context || root).find(selector);
+
+                // HANDLE: $(expr, context)
+                // (which is just equivalent to: $(context).find(expr)
+            } else {
+                return this.constructor(context).find(selector);
+            }
+
+            // HANDLE: $(DOMElement)
+        } else if (selector.nodeType) {
+            this[0] = selector;
+            this.length = 1;
+            return this;
+
+            // HANDLE: $(function)
+            // Shortcut for document ready
+        } else if (isFunction(selector)) {
+            return root.ready !== undefined ?
+                root.ready(selector) :
+
+                // Execute immediately if ready is not present
+                selector(jQuery);
+        }
+
+        return jQuery.makeArray(selector, this);
+    };
+
+// Give the init function the jQuery prototype for later instantiation
+init$2.prototype = jQuery.fn;
+
+// Initialize central reference
+rootjQuery = jQuery(document$1);
+
+
+var rparentsprev = /^(?:parents|prev(?:Until|All))/,
+
+    // Methods guaranteed to produce a unique set when starting from a unique set
+    guaranteedUnique = {
+        children: true,
+        contents: true,
+        next: true,
+        prev: true
+    };
+
+jQuery.fn.extend({
+    has: function (target) {
+        var targets = jQuery(target, this),
+            l = targets.length;
+
+        return this.filter(function () {
+            var i = 0;
+            for (; i < l; i++) {
+                if (jQuery.contains(this, targets[i])) {
+                    return true;
+                }
+            }
+        });
+    },
+
+    closest: function (selectors, context) {
+        var cur,
+            i = 0,
+            l = this.length,
+            matched = [],
+            targets = typeof selectors !== "string" && jQuery(selectors);
+
+        // Positional selectors never match, since there's no _selection_ context
+        if (!rneedsContext.test(selectors)) {
+            for (; i < l; i++) {
+                for (cur = this[i]; cur && cur !== context; cur = cur.parentNode) {
+
+                    // Always skip document fragments
+                    if (cur.nodeType < 11 && (targets ?
+                        targets.index(cur) > -1 :
+
+                        // Don't pass non-elements to Sizzle
+                        cur.nodeType === 1 &&
+                        jQuery.find.matchesSelector(cur, selectors))) {
+
+                        matched.push(cur);
+                        break;
+                    }
+                }
+            }
+        }
+
+        return this.pushStack(matched.length > 1 ? jQuery.uniqueSort(matched) : matched);
+    },
+
+    // Determine the position of an element within the set
+    index: function (elem) {
+
+        // No argument, return index in parent
+        if (!elem) {
+            return (this[0] && this[0].parentNode) ? this.first().prevAll().length : -1;
+        }
+
+        // Index in selector
+        if (typeof elem === "string") {
+            return indexOf.call(jQuery(elem), this[0]);
+        }
+
+        // Locate the position of the desired element
+        return indexOf.call(this,
+
+            // If it receives a jQuery object, the first element is used
+            elem.jquery ? elem[0] : elem
+        );
+    },
+
+    add: function (selector, context) {
+        return this.pushStack(
+            jQuery.uniqueSort(
+                jQuery.merge(this.get(), jQuery(selector, context))
+            )
+        );
+    },
+
+    addBack: function (selector) {
+        return this.add(selector == null ?
+            this.prevObject : this.prevObject.filter(selector)
+        );
+    }
+});
+
+function sibling(cur, dir) {
+    while ((cur = cur[dir]) && cur.nodeType !== 1) {
+    }
+    return cur;
+}
+
+jQuery.each({
+    parent: function (elem) {
+        var parent = elem.parentNode;
+        return parent && parent.nodeType !== 11 ? parent : null;
+    },
+    parents: function (elem) {
+        return dir(elem, "parentNode");
+    },
+    parentsUntil: function (elem, i, until) {
+        return dir(elem, "parentNode", until);
+    },
+    next: function (elem) {
+        return sibling(elem, "nextSibling");
+    },
+    prev: function (elem) {
+        return sibling(elem, "previousSibling");
+    },
+    nextAll: function (elem) {
+        return dir(elem, "nextSibling");
+    },
+    prevAll: function (elem) {
+        return dir(elem, "previousSibling");
+    },
+    nextUntil: function (elem, i, until) {
+        return dir(elem, "nextSibling", until);
+    },
+    prevUntil: function (elem, i, until) {
+        return dir(elem, "previousSibling", until);
+    },
+    siblings: function (elem) {
+        return siblings((elem.parentNode || {}).firstChild, elem);
+    },
+    children: function (elem) {
+        return siblings(elem.firstChild);
+    },
+    contents: function (elem) {
+        if (nodeName(elem, "iframe")) {
+            return elem.contentDocument;
+        }
+
+        // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only
+        // Treat the template element as a regular one in browsers that
+        // don't support it.
+        if (nodeName(elem, "template")) {
+            elem = elem.content || elem;
+        }
+
+        return jQuery.merge([], elem.childNodes);
+    }
+}, function (name, fn) {
+    jQuery.fn[name] = function (until, selector) {
+        var matched = jQuery.map(this, fn, until);
+
+        if (name.slice(-5) !== "Until") {
+            selector = until;
+        }
+
+        if (selector && typeof selector === "string") {
+            matched = jQuery.filter(selector, matched);
+        }
+
+        if (this.length > 1) {
+
+            // Remove duplicates
+            if (!guaranteedUnique[name]) {
+                jQuery.uniqueSort(matched);
+            }
+
+            // Reverse order for parents* and prev-derivatives
+            if (rparentsprev.test(name)) {
+                matched.reverse();
+            }
+        }
+
+        return this.pushStack(matched);
+    };
+});
+var rnothtmlwhite = (/[^\x20\t\r\n\f]+/g);
+
+
+// Convert String-formatted options into Object-formatted ones
+function createOptions(options) {
+    var object = {};
+    jQuery.each(options.match(rnothtmlwhite) || [], function (_, flag) {
+        object[flag] = true;
+    });
+    return object;
+}
+
+/*
+ * Create a callback list using the following parameters:
+ *
+ *	options: an optional list of space-separated options that will change how
+ *			the callback list behaves or a more traditional option object
+ *
+ * By default a callback list will act like an event callback list and can be
+ * "fired" multiple times.
+ *
+ * Possible options:
+ *
+ *	once:			will ensure the callback list can only be fired once (like a Deferred)
+ *
+ *	memory:			will keep track of previous values and will call any callback added
+ *					after the list has been fired right away with the latest "memorized"
+ *					values (like a Deferred)
+ *
+ *	unique:			will ensure a callback can only be added once (no duplicate in the list)
+ *
+ *	stopOnFalse:	interrupt callings when a callback returns false
+ *
+ */
+jQuery.Callbacks = function (options) {
+
+    // Convert options from String-formatted to Object-formatted if needed
+    // (we check in cache first)
+    options = typeof options === "string" ?
+        createOptions(options) :
+        jQuery.extend({}, options);
+
+    var // Flag to know if list is currently firing
+        firing,
+
+        // Last fire value for non-forgettable lists
+        memory,
+
+        // Flag to know if list was already fired
+        fired,
+
+        // Flag to prevent firing
+        locked,
+
+        // Actual callback list
+        list = [],
+
+        // Queue of execution data for repeatable lists
+        queue = [],
+
+        // Index of currently firing callback (modified by add/remove as needed)
+        firingIndex = -1,
+
+        // Fire callbacks
+        fire = function () {
+
+            // Enforce single-firing
+            locked = locked || options.once;
+
+            // Execute callbacks for all pending executions,
+            // respecting firingIndex overrides and runtime changes
+            fired = firing = true;
+            for (; queue.length; firingIndex = -1) {
+                memory = queue.shift();
+                while (++firingIndex < list.length) {
+
+                    // Run callback and check for early termination
+                    if (list[firingIndex].apply(memory[0], memory[1]) === false &&
+                        options.stopOnFalse) {
+
+                        // Jump to end and forget the data so .add doesn't re-fire
+                        firingIndex = list.length;
+                        memory = false;
+                    }
+                }
+            }
+
+            // Forget the data if we're done with it
+            if (!options.memory) {
+                memory = false;
+            }
+
+            firing = false;
+
+            // Clean up if we're done firing for good
+            if (locked) {
+
+                // Keep an empty list if we have data for future add calls
+                if (memory) {
+                    list = [];
+
+                    // Otherwise, this object is spent
+                } else {
+                    list = "";
+                }
+            }
+        },
+
+        // Actual Callbacks object
+        self = {
+
+            // Add a callback or a collection of callbacks to the list
+            add: function () {
+                if (list) {
+
+                    // If we have memory from a past run, we should fire after adding
+                    if (memory && !firing) {
+                        firingIndex = list.length - 1;
+                        queue.push(memory);
+                    }
+
+                    (function add(args) {
+                        jQuery.each(args, function (_, arg) {
+                            if (isFunction(arg)) {
+                                if (!options.unique || !self.has(arg)) {
+                                    list.push(arg);
+                                }
+                            } else if (arg && arg.length && toType(arg) !== "string") {
+
+                                // Inspect recursively
+                                add(arg);
+                            }
+                        });
+                    })(arguments);
+
+                    if (memory && !firing) {
+                        fire();
+                    }
+                }
+                return this;
+            },
+
+            // Remove a callback from the list
+            remove: function () {
+                jQuery.each(arguments, function (_, arg) {
+                    var index;
+                    while ((index = jQuery.inArray(arg, list, index)) > -1) {
+                        list.splice(index, 1);
+
+                        // Handle firing indexes
+                        if (index <= firingIndex) {
+                            firingIndex--;
+                        }
+                    }
+                });
+                return this;
+            },
+
+            // Check if a given callback is in the list.
+            // If no argument is given, return whether or not list has callbacks attached.
+            has: function (fn) {
+                return fn ?
+                    jQuery.inArray(fn, list) > -1 :
+                    list.length > 0;
+            },
+
+            // Remove all callbacks from the list
+            empty: function () {
+                if (list) {
+                    list = [];
+                }
+                return this;
+            },
+
+            // Disable .fire and .add
+            // Abort any current/pending executions
+            // Clear all callbacks and values
+            disable: function () {
+                locked = queue = [];
+                list = memory = "";
+                return this;
+            },
+            disabled: function () {
+                return !list;
+            },
+
+            // Disable .fire
+            // Also disable .add unless we have memory (since it would have no effect)
+            // Abort any pending executions
+            lock: function () {
+                locked = queue = [];
+                if (!memory && !firing) {
+                    list = memory = "";
+                }
+                return this;
+            },
+            locked: function () {
+                return !!locked;
+            },
+
+            // Call all callbacks with the given context and arguments
+            fireWith: function (context, args) {
+                if (!locked) {
+                    args = args || [];
+                    args = [context, args.slice ? args.slice() : args];
+                    queue.push(args);
+                    if (!firing) {
+                        fire();
+                    }
+                }
+                return this;
+            },
+
+            // Call all the callbacks with the given arguments
+            fire: function () {
+                self.fireWith(this, arguments);
+                return this;
+            },
+
+            // To know if the callbacks have already been called at least once
+            fired: function () {
+                return !!fired;
+            }
+        };
+
+    return self;
+};
+
+
+function Identity(v) {
+    return v;
+}
+
+function Thrower(ex) {
+    throw ex;
+}
+
+function adoptValue(value, resolve, reject, noValue) {
+    var method;
+
+    try {
+
+        // Check for promise aspect first to privilege synchronous behavior
+        if (value && isFunction((method = value.promise))) {
+            method.call(value).done(resolve).fail(reject);
+
+            // Other thenables
+        } else if (value && isFunction((method = value.then))) {
+            method.call(value, resolve, reject);
+
+            // Other non-thenables
+        } else {
+
+            // Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer:
+            // * false: [ value ].slice( 0 ) => resolve( value )
+            // * true: [ value ].slice( 1 ) => resolve()
+            resolve.apply(undefined, [value].slice(noValue));
+        }
+
+        // For Promises/A+, convert exceptions into rejections
+        // Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in
+        // Deferred#then to conditionally suppress rejection.
+    } catch (value) {
+
+        // Support: Android 4.0 only
+        // Strict mode functions invoked without .call/.apply get global-object context
+        reject.apply(undefined, [value]);
+    }
+}
+
+jQuery.extend({
+
+    Deferred: function (func) {
+        var tuples = [
+
+                // action, add listener, callbacks,
+                // ... .then handlers, argument index, [final state]
+                ["notify", "progress", jQuery.Callbacks("memory"),
+                    jQuery.Callbacks("memory"), 2],
+                ["resolve", "done", jQuery.Callbacks("once memory"),
+                    jQuery.Callbacks("once memory"), 0, "resolved"],
+                ["reject", "fail", jQuery.Callbacks("once memory"),
+                    jQuery.Callbacks("once memory"), 1, "rejected"]
+            ],
+            state = "pending",
+            promise = {
+                state: function () {
+                    return state;
+                },
+                always: function () {
+                    deferred.done(arguments).fail(arguments);
+                    return this;
+                },
+                "catch": function (fn) {
+                    return promise.then(null, fn);
+                },
+
+                // Keep pipe for back-compat
+                pipe: function ( /* fnDone, fnFail, fnProgress */) {
+                    var fns = arguments;
+
+                    return jQuery.Deferred(function (newDefer) {
+                        jQuery.each(tuples, function (i, tuple) {
+
+                            // Map tuples (progress, done, fail) to arguments (done, fail, progress)
+                            var fn = isFunction(fns[tuple[4]]) && fns[tuple[4]];
+
+                            // deferred.progress(function() { bind to newDefer or newDefer.notify })
+                            // deferred.done(function() { bind to newDefer or newDefer.resolve })
+                            // deferred.fail(function() { bind to newDefer or newDefer.reject })
+                            deferred[tuple[1]](function () {
+                                var returned = fn && fn.apply(this, arguments);
+                                if (returned && isFunction(returned.promise)) {
+                                    returned.promise()
+                                        .progress(newDefer.notify)
+                                        .done(newDefer.resolve)
+                                        .fail(newDefer.reject);
+                                } else {
+                                    newDefer[tuple[0] + "With"](
+                                        this,
+                                        fn ? [returned] : arguments
+                                    );
+                                }
+                            });
+                        });
+                        fns = null;
+                    }).promise();
+                },
+                then: function (onFulfilled, onRejected, onProgress) {
+                    var maxDepth = 0;
+
+                    function resolve(depth, deferred, handler, special) {
+                        return function () {
+                            var that = this,
+                                args = arguments,
+                                mightThrow = function () {
+                                    var returned, then;
+
+                                    // Support: Promises/A+ section 2.3.3.3.3
+                                    // https://promisesaplus.com/#point-59
+                                    // Ignore double-resolution attempts
+                                    if (depth < maxDepth) {
+                                        return;
+                                    }
+
+                                    returned = handler.apply(that, args);
+
+                                    // Support: Promises/A+ section 2.3.1
+                                    // https://promisesaplus.com/#point-48
+                                    if (returned === deferred.promise()) {
+                                        throw new TypeError("Thenable self-resolution");
+                                    }
+
+                                    // Support: Promises/A+ sections 2.3.3.1, 3.5
+                                    // https://promisesaplus.com/#point-54
+                                    // https://promisesaplus.com/#point-75
+                                    // Retrieve `then` only once
+                                    then = returned &&
+
+                                        // Support: Promises/A+ section 2.3.4
+                                        // https://promisesaplus.com/#point-64
+                                        // Only check objects and functions for thenability
+                                        (typeof returned === "object" ||
+                                            typeof returned === "function") &&
+                                        returned.then;
+
+                                    // Handle a returned thenable
+                                    if (isFunction(then)) {
+
+                                        // Special processors (notify) just wait for resolution
+                                        if (special) {
+                                            then.call(
+                                                returned,
+                                                resolve(maxDepth, deferred, Identity, special),
+                                                resolve(maxDepth, deferred, Thrower, special)
+                                            );
+
+                                            // Normal processors (resolve) also hook into progress
+                                        } else {
+
+                                            // ...and disregard older resolution values
+                                            maxDepth++;
+
+                                            then.call(
+                                                returned,
+                                                resolve(maxDepth, deferred, Identity, special),
+                                                resolve(maxDepth, deferred, Thrower, special),
+                                                resolve(maxDepth, deferred, Identity,
+                                                    deferred.notifyWith)
+                                            );
+                                        }
+
+                                        // Handle all other returned values
+                                    } else {
+
+                                        // Only substitute handlers pass on context
+                                        // and multiple values (non-spec behavior)
+                                        if (handler !== Identity) {
+                                            that = undefined;
+                                            args = [returned];
+                                        }
+
+                                        // Process the value(s)
+                                        // Default process is resolve
+                                        (special || deferred.resolveWith)(that, args);
+                                    }
+                                },
+
+                                // Only normal processors (resolve) catch and reject exceptions
+                                process = special ?
+                                    mightThrow :
+                                    function () {
+                                        try {
+                                            mightThrow();
+                                        } catch (e) {
+
+                                            if (jQuery.Deferred.exceptionHook) {
+                                                jQuery.Deferred.exceptionHook(e,
+                                                    process.stackTrace);
+                                            }
+
+                                            // Support: Promises/A+ section 2.3.3.3.4.1
+                                            // https://promisesaplus.com/#point-61
+                                            // Ignore post-resolution exceptions
+                                            if (depth + 1 >= maxDepth) {
+
+                                                // Only substitute handlers pass on context
+                                                // and multiple values (non-spec behavior)
+                                                if (handler !== Thrower) {
+                                                    that = undefined;
+                                                    args = [e];
+                                                }
+
+                                                deferred.rejectWith(that, args);
+                                            }
+                                        }
+                                    };
+
+                            // Support: Promises/A+ section 2.3.3.3.1
+                            // https://promisesaplus.com/#point-57
+                            // Re-resolve promises immediately to dodge false rejection from
+                            // subsequent errors
+                            if (depth) {
+                                process();
+                            } else {
+
+                                // Call an optional hook to record the stack, in case of exception
+                                // since it's otherwise lost when execution goes async
+                                if (jQuery.Deferred.getStackHook) {
+                                    process.stackTrace = jQuery.Deferred.getStackHook();
+                                }
+                                window.setTimeout(process);
+                            }
+                        };
+                    }
+
+                    return jQuery.Deferred(function (newDefer) {
+
+                        // progress_handlers.add( ... )
+                        tuples[0][3].add(
+                            resolve(
+                                0,
+                                newDefer,
+                                isFunction(onProgress) ?
+                                    onProgress :
+                                    Identity,
+                                newDefer.notifyWith
+                            )
+                        );
+
+                        // fulfilled_handlers.add( ... )
+                        tuples[1][3].add(
+                            resolve(
+                                0,
+                                newDefer,
+                                isFunction(onFulfilled) ?
+                                    onFulfilled :
+                                    Identity
+                            )
+                        );
+
+                        // rejected_handlers.add( ... )
+                        tuples[2][3].add(
+                            resolve(
+                                0,
+                                newDefer,
+                                isFunction(onRejected) ?
+                                    onRejected :
+                                    Thrower
+                            )
+                        );
+                    }).promise();
+                },
+
+                // Get a promise for this deferred
+                // If obj is provided, the promise aspect is added to the object
+                promise: function (obj) {
+                    return obj != null ? jQuery.extend(obj, promise) : promise;
+                }
+            },
+            deferred = {};
+
+        // Add list-specific methods
+        jQuery.each(tuples, function (i, tuple) {
+            var list = tuple[2],
+                stateString = tuple[5];
+
+            // promise.progress = list.add
+            // promise.done = list.add
+            // promise.fail = list.add
+            promise[tuple[1]] = list.add;
+
+            // Handle state
+            if (stateString) {
+                list.add(
+                    function () {
+
+                        // state = "resolved" (i.e., fulfilled)
+                        // state = "rejected"
+                        state = stateString;
+                    },
+
+                    // rejected_callbacks.disable
+                    // fulfilled_callbacks.disable
+                    tuples[3 - i][2].disable,
+
+                    // rejected_handlers.disable
+                    // fulfilled_handlers.disable
+                    tuples[3 - i][3].disable,
+
+                    // progress_callbacks.lock
+                    tuples[0][2].lock,
+
+                    // progress_handlers.lock
+                    tuples[0][3].lock
+                );
+            }
+
+            // progress_handlers.fire
+            // fulfilled_handlers.fire
+            // rejected_handlers.fire
+            list.add(tuple[3].fire);
+
+            // deferred.notify = function() { deferred.notifyWith(...) }
+            // deferred.resolve = function() { deferred.resolveWith(...) }
+            // deferred.reject = function() { deferred.rejectWith(...) }
+            deferred[tuple[0]] = function () {
+                deferred[tuple[0] + "With"](this === deferred ? undefined : this, arguments);
+                return this;
+            };
+
+            // deferred.notifyWith = list.fireWith
+            // deferred.resolveWith = list.fireWith
+            // deferred.rejectWith = list.fireWith
+            deferred[tuple[0] + "With"] = list.fireWith;
+        });
+
+        // Make the deferred a promise
+        promise.promise(deferred);
+
+        // Call given func if any
+        if (func) {
+            func.call(deferred, deferred);
+        }
+
+        // All done!
+        return deferred;
+    },
+
+    // Deferred helper
+    when: function (singleValue) {
+        var
+
+            // count of uncompleted subordinates
+            remaining = arguments.length,
+
+            // count of unprocessed arguments
+            i = remaining,
+
+            // subordinate fulfillment data
+            resolveContexts = Array(i),
+            resolveValues = slice.call(arguments),
+
+            // the master Deferred
+            master = jQuery.Deferred(),
+
+            // subordinate callback factory
+            updateFunc = function (i) {
+                return function (value) {
+                    resolveContexts[i] = this;
+                    resolveValues[i] = arguments.length > 1 ? slice.call(arguments) : value;
+                    if (!(--remaining)) {
+                        master.resolveWith(resolveContexts, resolveValues);
+                    }
+                };
+            };
+
+        // Single- and empty arguments are adopted like Promise.resolve
+        if (remaining <= 1) {
+            adoptValue(singleValue, master.done(updateFunc(i)).resolve, master.reject,
+                !remaining);
+
+            // Use .then() to unwrap secondary thenables (cf. gh-3000)
+            if (master.state() === "pending" ||
+                isFunction(resolveValues[i] && resolveValues[i].then)) {
+
+                return master.then();
+            }
+        }
+
+        // Multiple arguments are aggregated like Promise.all array elements
+        while (i--) {
+            adoptValue(resolveValues[i], updateFunc(i), master.reject);
+        }
+
+        return master.promise();
+    }
+});
+
+
+// These usually indicate a programmer mistake during development,
+// warn about them ASAP rather than swallowing them by default.
+var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;
+
+jQuery.Deferred.exceptionHook = function (error, stack) {
+
+    // Support: IE 8 - 9 only
+    // Console exists when dev tools are open, which can happen at any time
+    if (window.console && window.console.warn && error && rerrorNames.test(error.name)) {
+        window.console.warn("jQuery.Deferred exception: " + error.message, error.stack, stack);
+    }
+};
+
+
+jQuery.readyException = function (error) {
+    window.setTimeout(function () {
+        throw error;
+    });
+};
+
+
+// The deferred used on DOM ready
+var readyList = jQuery.Deferred();
+
+jQuery.fn.ready = function (fn) {
+
+    readyList
+        .then(fn)
+
+        // Wrap jQuery.readyException in a function so that the lookup
+        // happens at the time of error handling instead of callback
+        // registration.
+        .catch(function (error) {
+            jQuery.readyException(error);
+        });
+
+    return this;
+};
+
+jQuery.extend({
+
+    // Is the DOM ready to be used? Set to true once it occurs.
+    isReady: false,
+
+    // A counter to track how many items to wait for before
+    // the ready event fires. See #6781
+    readyWait: 1,
+
+    // Handle when the DOM is ready
+    ready: function (wait) {
+
+        // Abort if there are pending holds or we're already ready
+        if (wait === true ? --jQuery.readyWait : jQuery.isReady) {
+            return;
+        }
+
+        // Remember that the DOM is ready
+        jQuery.isReady = true;
+
+        // If a normal DOM Ready event fired, decrement, and wait if need be
+        if (wait !== true && --jQuery.readyWait > 0) {
+            return;
+        }
+
+        // If there are functions bound, to execute
+        readyList.resolveWith(document$1, [jQuery]);
+    }
+});
+
+jQuery.ready.then = readyList.then;
+
+// The ready event handler and self cleanup method
+function completed() {
+    document$1.removeEventListener("DOMContentLoaded", completed);
+    window.removeEventListener("load", completed);
+    jQuery.ready();
+}
+
+// Catch cases where $(document).ready() is called
+// after the browser event has already occurred.
+// Support: IE <=9 - 10 only
+// Older IE sometimes signals "interactive" too soon
+if (document$1.readyState === "complete" ||
+    (document$1.readyState !== "loading" && !document$1.documentElement.doScroll)) {
+
+    // Handle it asynchronously to allow scripts the opportunity to delay ready
+    window.setTimeout(jQuery.ready);
+
+} else {
+
+    // Use the handy event callback
+    document$1.addEventListener("DOMContentLoaded", completed);
+
+    // A fallback to window.onload, that will always work
+    window.addEventListener("load", completed);
+}
+
+
+// Multifunctional method to get and set values of a collection
+// The value/s can optionally be executed if it's a function
+var access = function (elems, fn, key, value, chainable, emptyGet, raw) {
+    var i = 0,
+        len = elems.length,
+        bulk = key == null;
+
+    // Sets many values
+    if (toType(key) === "object") {
+        chainable = true;
+        for (i in key) {
+            access(elems, fn, i, key[i], true, emptyGet, raw);
+        }
+
+        // Sets one value
+    } else if (value !== undefined) {
+        chainable = true;
+
+        if (!isFunction(value)) {
+            raw = true;
+        }
+
+        if (bulk) {
+
+            // Bulk operations run against the entire set
+            if (raw) {
+                fn.call(elems, value);
+                fn = null;
+
+                // ...except when executing function values
+            } else {
+                bulk = fn;
+                fn = function (elem, key, value) {
+                    return bulk.call(jQuery(elem), value);
+                };
+            }
+        }
+
+        if (fn) {
+            for (; i < len; i++) {
+                fn(
+                    elems[i], key, raw ?
+                        value :
+                        value.call(elems[i], i, fn(elems[i], key))
+                );
+            }
+        }
+    }
+
+    if (chainable) {
+        return elems;
+    }
+
+    // Gets
+    if (bulk) {
+        return fn.call(elems);
+    }
+
+    return len ? fn(elems[0], key) : emptyGet;
+};
+
+
+// Matches dashed string for camelizing
+var rmsPrefix = /^-ms-/,
+    rdashAlpha = /-([a-z])/g;
+
+// Used by camelCase as callback to replace()
+function fcamelCase(all, letter) {
+    return letter.toUpperCase();
+}
+
+// Convert dashed to camelCase; used by the css and data modules
+// Support: IE <=9 - 11, Edge 12 - 15
+// Microsoft forgot to hump their vendor prefix (#9572)
+function camelCase(string) {
+    return string.replace(rmsPrefix, "ms-").replace(rdashAlpha, fcamelCase);
+}
+
+var acceptData = function (owner) {
+
+    // Accepts only:
+    //  - Node
+    //    - Node.ELEMENT_NODE
+    //    - Node.DOCUMENT_NODE
+    //  - Object
+    //    - Any
+    return owner.nodeType === 1 || owner.nodeType === 9 || !(+owner.nodeType);
+};
+
+
+function Data() {
+    this.expando = jQuery.expando + Data.uid++;
+}
+
+Data.uid = 1;
+
+Data.prototype = {
+
+    cache: function (owner) {
+
+        // Check if the owner object already has a cache
+        var value = owner[this.expando];
+
+        // If not, create one
+        if (!value) {
+            value = {};
+
+            // We can accept data for non-element nodes in modern browsers,
+            // but we should not, see #8335.
+            // Always return an empty object.
+            if (acceptData(owner)) {
+
+                // If it is a node unlikely to be stringify-ed or looped over
+                // use plain assignment
+                if (owner.nodeType) {
+                    owner[this.expando] = value;
+
+                    // Otherwise secure it in a non-enumerable property
+                    // configurable must be true to allow the property to be
+                    // deleted when data is removed
+                } else {
+                    Object.defineProperty(owner, this.expando, {
+                        value: value,
+                        configurable: true
+                    });
+                }
+            }
+        }
+
+        return value;
+    },
+    set: function (owner, data, value) {
+        var prop,
+            cache = this.cache(owner);
+
+        // Handle: [ owner, key, value ] args
+        // Always use camelCase key (gh-2257)
+        if (typeof data === "string") {
+            cache[camelCase(data)] = value;
+
+            // Handle: [ owner, { properties } ] args
+        } else {
+
+            // Copy the properties one-by-one to the cache object
+            for (prop in data) {
+                cache[camelCase(prop)] = data[prop];
+            }
+        }
+        return cache;
+    },
+    get: function (owner, key) {
+        return key === undefined ?
+            this.cache(owner) :
+
+            // Always use camelCase key (gh-2257)
+            owner[this.expando] && owner[this.expando][camelCase(key)];
+    },
+    access: function (owner, key, value) {
+
+        // In cases where either:
+        //
+        //   1. No key was specified
+        //   2. A string key was specified, but no value provided
+        //
+        // Take the "read" path and allow the get method to determine
+        // which value to return, respectively either:
+        //
+        //   1. The entire cache object
+        //   2. The data stored at the key
+        //
+        if (key === undefined ||
+            ((key && typeof key === "string") && value === undefined)) {
+
+            return this.get(owner, key);
+        }
+
+        // When the key is not a string, or both a key and value
+        // are specified, set or extend (existing objects) with either:
+        //
+        //   1. An object of properties
+        //   2. A key and value
+        //
+        this.set(owner, key, value);
+
+        // Since the "set" path can have two possible entry points
+        // return the expected data based on which path was taken[*]
+        return value !== undefined ? value : key;
+    },
+    remove: function (owner, key) {
+        var i,
+            cache = owner[this.expando];
+
+        if (cache === undefined) {
+            return;
+        }
+
+        if (key !== undefined) {
+
+            // Support array or space separated string of keys
+            if (Array.isArray(key)) {
+
+                // If key is an array of keys...
+                // We always set camelCase keys, so remove that.
+                key = key.map(camelCase);
+            } else {
+                key = camelCase(key);
+
+                // If a key with the spaces exists, use it.
+                // Otherwise, create an array by matching non-whitespace
+                key = key in cache ?
+                    [key] :
+                    (key.match(rnothtmlwhite) || []);
+            }
+
+            i = key.length;
+
+            while (i--) {
+                delete cache[key[i]];
+            }
+        }
+
+        // Remove the expando if there's no more data
+        if (key === undefined || jQuery.isEmptyObject(cache)) {
+
+            // Support: Chrome <=35 - 45
+            // Webkit & Blink performance suffers when deleting properties
+            // from DOM nodes, so set to undefined instead
+            // https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)
+            if (owner.nodeType) {
+                owner[this.expando] = undefined;
+            } else {
+                delete owner[this.expando];
+            }
+        }
+    },
+    hasData: function (owner) {
+        var cache = owner[this.expando];
+        return cache !== undefined && !jQuery.isEmptyObject(cache);
+    }
+};
+var dataPriv = new Data();
+
+var dataUser = new Data();
+
+
+//	Implementation Summary
+//
+//	1. Enforce API surface and semantic compatibility with 1.9.x branch
+//	2. Improve the module's maintainability by reducing the storage
+//		paths to a single mechanism.
+//	3. Use the same single mechanism to support "private" and "user" data.
+//	4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData)
+//	5. Avoid exposing implementation details on user objects (eg. expando properties)
+//	6. Provide a clear path for implementation upgrade to WeakMap in 2014
+
+var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/,
+    rmultiDash = /[A-Z]/g;
+
+function getData(data) {
+    if (data === "true") {
+        return true;
+    }
+
+    if (data === "false") {
+        return false;
+    }
+
+    if (data === "null") {
+        return null;
+    }
+
+    // Only convert to a number if it doesn't change the string
+    if (data === +data + "") {
+        return +data;
+    }
+
+    if (rbrace.test(data)) {
+        return JSON.parse(data);
+    }
+
+    return data;
+}
+
+function dataAttr(elem, key, data) {
+    var name;
+
+    // If nothing was found internally, try to fetch any
+    // data from the HTML5 data-* attribute
+    if (data === undefined && elem.nodeType === 1) {
+        name = "data-" + key.replace(rmultiDash, "-$&").toLowerCase();
+        data = elem.getAttribute(name);
+
+        if (typeof data === "string") {
+            try {
+                data = getData(data);
+            } catch (e) {
+            }
+
+            // Make sure we set the data so it isn't changed later
+            dataUser.set(elem, key, data);
+        } else {
+            data = undefined;
+        }
+    }
+    return data;
+}
+
+jQuery.extend({
+    hasData: function (elem) {
+        return dataUser.hasData(elem) || dataPriv.hasData(elem);
+    },
+
+    data: function (elem, name, data) {
+        return dataUser.access(elem, name, data);
+    },
+
+    removeData: function (elem, name) {
+        dataUser.remove(elem, name);
+    },
+
+    // TODO: Now that all calls to _data and _removeData have been replaced
+    // with direct calls to dataPriv methods, these can be deprecated.
+    _data: function (elem, name, data) {
+        return dataPriv.access(elem, name, data);
+    },
+
+    _removeData: function (elem, name) {
+        dataPriv.remove(elem, name);
+    }
+});
+
+jQuery.fn.extend({
+    data: function (key, value) {
+        var i, name, data,
+            elem = this[0],
+            attrs = elem && elem.attributes;
+
+        // Gets all values
+        if (key === undefined) {
+            if (this.length) {
+                data = dataUser.get(elem);
+
+                if (elem.nodeType === 1 && !dataPriv.get(elem, "hasDataAttrs")) {
+                    i = attrs.length;
+                    while (i--) {
+
+                        // Support: IE 11 only
+                        // The attrs elements can be null (#14894)
+                        if (attrs[i]) {
+                            name = attrs[i].name;
+                            if (name.indexOf("data-") === 0) {
+                                name = camelCase(name.slice(5));
+                                dataAttr(elem, name, data[name]);
+                            }
+                        }
+                    }
+                    dataPriv.set(elem, "hasDataAttrs", true);
+                }
+            }
+
+            return data;
+        }
+
+        // Sets multiple values
+        if (typeof key === "object") {
+            return this.each(function () {
+                dataUser.set(this, key);
+            });
+        }
+
+        return access(this, function (value) {
+            var data;
+
+            // The calling jQuery object (element matches) is not empty
+            // (and therefore has an element appears at this[ 0 ]) and the
+            // `value` parameter was not undefined. An empty jQuery object
+            // will result in `undefined` for elem = this[ 0 ] which will
+            // throw an exception if an attempt to read a data cache is made.
+            if (elem && value === undefined) {
+
+                // Attempt to get data from the cache
+                // The key will always be camelCased in Data
+                data = dataUser.get(elem, key);
+                if (data !== undefined) {
+                    return data;
+                }
+
+                // Attempt to "discover" the data in
+                // HTML5 custom data-* attrs
+                data = dataAttr(elem, key);
+                if (data !== undefined) {
+                    return data;
+                }
+
+                // We tried really hard, but the data doesn't exist.
+                return;
+            }
+
+            // Set the data...
+            this.each(function () {
+
+                // We always store the camelCased key
+                dataUser.set(this, key, value);
+            });
+        }, null, value, arguments.length > 1, null, true);
+    },
+
+    removeData: function (key) {
+        return this.each(function () {
+            dataUser.remove(this, key);
+        });
+    }
+});
+
+
+jQuery.extend({
+    queue: function (elem, type, data) {
+        var queue;
+
+        if (elem) {
+            type = (type || "fx") + "queue";
+            queue = dataPriv.get(elem, type);
+
+            // Speed up dequeue by getting out quickly if this is just a lookup
+            if (data) {
+                if (!queue || Array.isArray(data)) {
+                    queue = dataPriv.access(elem, type, jQuery.makeArray(data));
+                } else {
+                    queue.push(data);
+                }
+            }
+            return queue || [];
+        }
+    },
+
+    dequeue: function (elem, type) {
+        type = type || "fx";
+
+        var queue = jQuery.queue(elem, type),
+            startLength = queue.length,
+            fn = queue.shift(),
+            hooks = jQuery._queueHooks(elem, type),
+            next = function () {
+                jQuery.dequeue(elem, type);
+            };
+
+        // If the fx queue is dequeued, always remove the progress sentinel
+        if (fn === "inprogress") {
+            fn = queue.shift();
+            startLength--;
+        }
+
+        if (fn) {
+
+            // Add a progress sentinel to prevent the fx queue from being
+            // automatically dequeued
+            if (type === "fx") {
+                queue.unshift("inprogress");
+            }
+
+            // Clear up the last queue stop function
+            delete hooks.stop;
+            fn.call(elem, next, hooks);
+        }
+
+        if (!startLength && hooks) {
+            hooks.empty.fire();
+        }
+    },
+
+    // Not public - generate a queueHooks object, or return the current one
+    _queueHooks: function (elem, type) {
+        var key = type + "queueHooks";
+        return dataPriv.get(elem, key) || dataPriv.access(elem, key, {
+            empty: jQuery.Callbacks("once memory").add(function () {
+                dataPriv.remove(elem, [type + "queue", key]);
+            })
+        });
+    }
+});
+
+jQuery.fn.extend({
+    queue: function (type, data) {
+        var setter = 2;
+
+        if (typeof type !== "string") {
+            data = type;
+            type = "fx";
+            setter--;
+        }
+
+        if (arguments.length < setter) {
+            return jQuery.queue(this[0], type);
+        }
+
+        return data === undefined ?
+            this :
+            this.each(function () {
+                var queue = jQuery.queue(this, type, data);
+
+                // Ensure a hooks for this queue
+                jQuery._queueHooks(this, type);
+
+                if (type === "fx" && queue[0] !== "inprogress") {
+                    jQuery.dequeue(this, type);
+                }
+            });
+    },
+    dequeue: function (type) {
+        return this.each(function () {
+            jQuery.dequeue(this, type);
+        });
+    },
+    clearQueue: function (type) {
+        return this.queue(type || "fx", []);
+    },
+
+    // Get a promise resolved when queues of a certain type
+    // are emptied (fx is the type by default)
+    promise: function (type, obj) {
+        var tmp,
+            count = 1,
+            defer = jQuery.Deferred(),
+            elements = this,
+            i = this.length,
+            resolve = function () {
+                if (!(--count)) {
+                    defer.resolveWith(elements, [elements]);
+                }
+            };
+
+        if (typeof type !== "string") {
+            obj = type;
+            type = undefined;
+        }
+        type = type || "fx";
+
+        while (i--) {
+            tmp = dataPriv.get(elements[i], type + "queueHooks");
+            if (tmp && tmp.empty) {
+                count++;
+                tmp.empty.add(resolve);
+            }
+        }
+        resolve();
+        return defer.promise(obj);
+    }
+});
+var pnum = (/[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/).source;
+
+var rcssNum = new RegExp("^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i");
+
+
+var cssExpand = ["Top", "Right", "Bottom", "Left"];
+
+var isHiddenWithinTree = function (elem, el) {
+
+    // isHiddenWithinTree might be called from jQuery#filter function;
+    // in that case, element will be second argument
+    elem = el || elem;
+
+    // Inline style trumps all
+    return elem.style.display === "none" ||
+        elem.style.display === "" &&
+
+        // Otherwise, check computed style
+        // Support: Firefox <=43 - 45
+        // Disconnected elements can have computed display: none, so first confirm that elem is
+        // in the document.
+        jQuery.contains(elem.ownerDocument, elem) &&
+
+        jQuery.css(elem, "display") === "none";
+};
+
+var swap = function (elem, options, callback, args) {
+    var ret, name,
+        old = {};
+
+    // Remember the old values, and insert the new ones
+    for (name in options) {
+        old[name] = elem.style[name];
+        elem.style[name] = options[name];
+    }
+
+    ret = callback.apply(elem, args || []);
+
+    // Revert the old values
+    for (name in options) {
+        elem.style[name] = old[name];
+    }
+
+    return ret;
+};
+
+
+function adjustCSS(elem, prop, valueParts, tween) {
+    var adjusted, scale,
+        maxIterations = 20,
+        currentValue = tween ?
+            function () {
+                return tween.cur();
+            } :
+            function () {
+                return jQuery.css(elem, prop, "");
+            },
+        initial = currentValue(),
+        unit = valueParts && valueParts[3] || (jQuery.cssNumber[prop] ? "" : "px"),
+
+        // Starting value computation is required for potential unit mismatches
+        initialInUnit = (jQuery.cssNumber[prop] || unit !== "px" && +initial) &&
+            rcssNum.exec(jQuery.css(elem, prop));
+
+    if (initialInUnit && initialInUnit[3] !== unit) {
+
+        // Support: Firefox <=54
+        // Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144)
+        initial = initial / 2;
+
+        // Trust units reported by jQuery.css
+        unit = unit || initialInUnit[3];
+
+        // Iteratively approximate from a nonzero starting point
+        initialInUnit = +initial || 1;
+
+        while (maxIterations--) {
+
+            // Evaluate and update our best guess (doubling guesses that zero out).
+            // Finish if the scale equals or crosses 1 (making the old*new product non-positive).
+            jQuery.style(elem, prop, initialInUnit + unit);
+            if ((1 - scale) * (1 - (scale = currentValue() / initial || 0.5)) <= 0) {
+                maxIterations = 0;
+            }
+            initialInUnit = initialInUnit / scale;
+
+        }
+
+        initialInUnit = initialInUnit * 2;
+        jQuery.style(elem, prop, initialInUnit + unit);
+
+        // Make sure we update the tween properties later on
+        valueParts = valueParts || [];
+    }
+
+    if (valueParts) {
+        initialInUnit = +initialInUnit || +initial || 0;
+
+        // Apply relative offset (+=/-=) if specified
+        adjusted = valueParts[1] ?
+            initialInUnit + (valueParts[1] + 1) * valueParts[2] :
+            +valueParts[2];
+        if (tween) {
+            tween.unit = unit;
+            tween.start = initialInUnit;
+            tween.end = adjusted;
+        }
+    }
+    return adjusted;
+}
+
+
+var defaultDisplayMap = {};
+
+function getDefaultDisplay(elem) {
+    var temp,
+        doc = elem.ownerDocument,
+        nodeName = elem.nodeName,
+        display = defaultDisplayMap[nodeName];
+
+    if (display) {
+        return display;
+    }
+
+    temp = doc.body.appendChild(doc.createElement(nodeName));
+    display = jQuery.css(temp, "display");
+
+    temp.parentNode.removeChild(temp);
+
+    if (display === "none") {
+        display = "block";
+    }
+    defaultDisplayMap[nodeName] = display;
+
+    return display;
+}
+
+function showHide(elements, show) {
+    var display, elem,
+        values = [],
+        index = 0,
+        length = elements.length;
+
+    // Determine new display value for elements that need to change
+    for (; index < length; index++) {
+        elem = elements[index];
+        if (!elem.style) {
+            continue;
+        }
+
+        display = elem.style.display;
+        if (show) {
+
+            // Since we force visibility upon cascade-hidden elements, an immediate (and slow)
+            // check is required in this first loop unless we have a nonempty display value (either
+            // inline or about-to-be-restored)
+            if (display === "none") {
+                values[index] = dataPriv.get(elem, "display") || null;
+                if (!values[index]) {
+                    elem.style.display = "";
+                }
+            }
+            if (elem.style.display === "" && isHiddenWithinTree(elem)) {
+                values[index] = getDefaultDisplay(elem);
+            }
+        } else {
+            if (display !== "none") {
+                values[index] = "none";
+
+                // Remember what we're overwriting
+                dataPriv.set(elem, "display", display);
+            }
+        }
+    }
+
+    // Set the display of the elements in a second loop to avoid constant reflow
+    for (index = 0; index < length; index++) {
+        if (values[index] != null) {
+            elements[index].style.display = values[index];
+        }
+    }
+
+    return elements;
+}
+
+jQuery.fn.extend({
+    show: function () {
+        return showHide(this, true);
+    },
+    hide: function () {
+        return showHide(this);
+    },
+    toggle: function (state) {
+        if (typeof state === "boolean") {
+            return state ? this.show() : this.hide();
+        }
+
+        return this.each(function () {
+            if (isHiddenWithinTree(this)) {
+                jQuery(this).show();
+            } else {
+                jQuery(this).hide();
+            }
+        });
+    }
+});
+var rcheckableType = (/^(?:checkbox|radio)$/i);
+
+var rtagName = (/<([a-z][^\/\0>\x20\t\r\n\f]+)/i);
+
+var rscriptType = (/^$|^module$|\/(?:java|ecma)script/i);
+
+
+// We have to close these tags to support XHTML (#13200)
+var wrapMap = {
+
+    // Support: IE <=9 only
+    option: [1, "<select multiple='multiple'>", "</select>"],
+
+    // XHTML parsers do not magically insert elements in the
+    // same way that tag soup parsers do. So we cannot shorten
+    // this by omitting <tbody> or other required elements.
+    thead: [1, "<table>", "</table>"],
+    col: [2, "<table><colgroup>", "</colgroup></table>"],
+    tr: [2, "<table><tbody>", "</tbody></table>"],
+    td: [3, "<table><tbody><tr>", "</tr></tbody></table>"],
+
+    _default: [0, "", ""]
+};
+
+// Support: IE <=9 only
+wrapMap.optgroup = wrapMap.option;
+
+wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
+wrapMap.th = wrapMap.td;
+
+
+function getAll(context, tag) {
+
+    // Support: IE <=9 - 11 only
+    // Use typeof to avoid zero-argument method invocation on host objects (#15151)
+    var ret;
+
+    if (typeof context.getElementsByTagName !== "undefined") {
+        ret = context.getElementsByTagName(tag || "*");
+
+    } else if (typeof context.querySelectorAll !== "undefined") {
+        ret = context.querySelectorAll(tag || "*");
+
+    } else {
+        ret = [];
+    }
+
+    if (tag === undefined || tag && nodeName(context, tag)) {
+        return jQuery.merge([context], ret);
+    }
+
+    return ret;
+}
+
+
+// Mark scripts as having already been evaluated
+function setGlobalEval(elems, refElements) {
+    var i = 0,
+        l = elems.length;
+
+    for (; i < l; i++) {
+        dataPriv.set(
+            elems[i],
+            "globalEval",
+            !refElements || dataPriv.get(refElements[i], "globalEval")
+        );
+    }
+}
+
+
+var rhtml = /<|&#?\w+;/;
+
+function buildFragment(elems, context, scripts, selection, ignored) {
+    var elem, tmp, tag, wrap, contains, j,
+        fragment = context.createDocumentFragment(),
+        nodes = [],
+        i = 0,
+        l = elems.length;
+
+    for (; i < l; i++) {
+        elem = elems[i];
+
+        if (elem || elem === 0) {
+
+            // Add nodes directly
+            if (toType(elem) === "object") {
+
+                // Support: Android <=4.0 only, PhantomJS 1 only
+                // push.apply(_, arraylike) throws on ancient WebKit
+                jQuery.merge(nodes, elem.nodeType ? [elem] : elem);
+
+                // Convert non-html into a text node
+            } else if (!rhtml.test(elem)) {
+                nodes.push(context.createTextNode(elem));
+
+                // Convert html into DOM nodes
+            } else {
+                tmp = tmp || fragment.appendChild(context.createElement("div"));
+
+                // Deserialize a standard representation
+                tag = (rtagName.exec(elem) || ["", ""])[1].toLowerCase();
+                wrap = wrapMap[tag] || wrapMap._default;
+                tmp.innerHTML = wrap[1] + jQuery.htmlPrefilter(elem) + wrap[2];
+
+                // Descend through wrappers to the right content
+                j = wrap[0];
+                while (j--) {
+                    tmp = tmp.lastChild;
+                }
+
+                // Support: Android <=4.0 only, PhantomJS 1 only
+                // push.apply(_, arraylike) throws on ancient WebKit
+                jQuery.merge(nodes, tmp.childNodes);
+
+                // Remember the top-level container
+                tmp = fragment.firstChild;
+
+                // Ensure the created nodes are orphaned (#12392)
+                tmp.textContent = "";
+            }
+        }
+    }
+
+    // Remove wrapper from fragment
+    fragment.textContent = "";
+
+    i = 0;
+    while ((elem = nodes[i++])) {
+
+        // Skip elements already in the context collection (trac-4087)
+        if (selection && jQuery.inArray(elem, selection) > -1) {
+            if (ignored) {
+                ignored.push(elem);
+            }
+            continue;
+        }
+
+        contains = jQuery.contains(elem.ownerDocument, elem);
+
+        // Append to fragment
+        tmp = getAll(fragment.appendChild(elem), "script");
+
+        // Preserve script evaluation history
+        if (contains) {
+            setGlobalEval(tmp);
+        }
+
+        // Capture executables
+        if (scripts) {
+            j = 0;
+            while ((elem = tmp[j++])) {
+                if (rscriptType.test(elem.type || "")) {
+                    scripts.push(elem);
+                }
+            }
+        }
+    }
+
+    return fragment;
+}
+
+
+(function () {
+    var fragment = document$1.createDocumentFragment(),
+        div = fragment.appendChild(document$1.createElement("div")),
+        input = document$1.createElement("input");
+
+    // Support: Android 4.0 - 4.3 only
+    // Check state lost if the name is set (#11217)
+    // Support: Windows Web Apps (WWA)
+    // `name` and `type` must use .setAttribute for WWA (#14901)
+    input.setAttribute("type", "radio");
+    input.setAttribute("checked", "checked");
+    input.setAttribute("name", "t");
+
+    div.appendChild(input);
+
+    // Support: Android <=4.1 only
+    // Older WebKit doesn't clone checked state correctly in fragments
+    support.checkClone = div.cloneNode(true).cloneNode(true).lastChild.checked;
+
+    // Support: IE <=11 only
+    // Make sure textarea (and checkbox) defaultValue is properly cloned
+    div.innerHTML = "<textarea>x</textarea>";
+    support.noCloneChecked = !!div.cloneNode(true).lastChild.defaultValue;
+})();
+var documentElement = document$1.documentElement;
+
+
+var
+    rkeyEvent = /^key/,
+    rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/,
+    rtypenamespace = /^([^.]*)(?:\.(.+)|)/;
+
+function returnTrue() {
+    return true;
+}
+
+function returnFalse() {
+    return false;
+}
+
+// Support: IE <=9 only
+// See #13393 for more info
+function safeActiveElement() {
+    try {
+        return document$1.activeElement;
+    } catch (err) {
+    }
+}
+
+function on(elem, types, selector, data, fn, one) {
+    var origFn, type;
+
+    // Types can be a map of types/handlers
+    if (typeof types === "object") {
+
+        // ( types-Object, selector, data )
+        if (typeof selector !== "string") {
+
+            // ( types-Object, data )
+            data = data || selector;
+            selector = undefined;
+        }
+        for (type in types) {
+            on(elem, type, selector, data, types[type], one);
+        }
+        return elem;
+    }
+
+    if (data == null && fn == null) {
+
+        // ( types, fn )
+        fn = selector;
+        data = selector = undefined;
+    } else if (fn == null) {
+        if (typeof selector === "string") {
+
+            // ( types, selector, fn )
+            fn = data;
+            data = undefined;
+        } else {
+
+            // ( types, data, fn )
+            fn = data;
+            data = selector;
+            selector = undefined;
+        }
+    }
+    if (fn === false) {
+        fn = returnFalse;
+    } else if (!fn) {
+        return elem;
+    }
+
+    if (one === 1) {
+        origFn = fn;
+        fn = function (event) {
+
+            // Can use an empty set, since event contains the info
+            jQuery().off(event);
+            return origFn.apply(this, arguments);
+        };
+
+        // Use same guid so caller can remove using origFn
+        fn.guid = origFn.guid || (origFn.guid = jQuery.guid++);
+    }
+    return elem.each(function () {
+        jQuery.event.add(this, types, fn, data, selector);
+    });
+}
+
+/*
+ * Helper functions for managing events -- not part of the public interface.
+ * Props to Dean Edwards' addEvent library for many of the ideas.
+ */
+jQuery.event = {
+
+    global: {},
+
+    add: function (elem, types, handler, data, selector) {
+
+        var handleObjIn, eventHandle, tmp,
+            events, t, handleObj,
+            special, handlers, type, namespaces, origType,
+            elemData = dataPriv.get(elem);
+
+        // Don't attach events to noData or text/comment nodes (but allow plain objects)
+        if (!elemData) {
+            return;
+        }
+
+        // Caller can pass in an object of custom data in lieu of the handler
+        if (handler.handler) {
+            handleObjIn = handler;
+            handler = handleObjIn.handler;
+            selector = handleObjIn.selector;
+        }
+
+        // Ensure that invalid selectors throw exceptions at attach time
+        // Evaluate against documentElement in case elem is a non-element node (e.g., document)
+        if (selector) {
+            jQuery.find.matchesSelector(documentElement, selector);
+        }
+
+        // Make sure that the handler has a unique ID, used to find/remove it later
+        if (!handler.guid) {
+            handler.guid = jQuery.guid++;
+        }
+
+        // Init the element's event structure and main handler, if this is the first
+        if (!(events = elemData.events)) {
+            events = elemData.events = {};
+        }
+        if (!(eventHandle = elemData.handle)) {
+            eventHandle = elemData.handle = function (e) {
+
+                // Discard the second event of a jQuery.event.trigger() and
+                // when an event is called after a page has unloaded
+                return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ?
+                    jQuery.event.dispatch.apply(elem, arguments) : undefined;
+            };
+        }
+
+        // Handle multiple events separated by a space
+        types = (types || "").match(rnothtmlwhite) || [""];
+        t = types.length;
+        while (t--) {
+            tmp = rtypenamespace.exec(types[t]) || [];
+            type = origType = tmp[1];
+            namespaces = (tmp[2] || "").split(".").sort();
+
+            // There *must* be a type, no attaching namespace-only handlers
+            if (!type) {
+                continue;
+            }
+
+            // If event changes its type, use the special event handlers for the changed type
+            special = jQuery.event.special[type] || {};
+
+            // If selector defined, determine special event api type, otherwise given type
+            type = (selector ? special.delegateType : special.bindType) || type;
+
+            // Update special based on newly reset type
+            special = jQuery.event.special[type] || {};
+
+            // handleObj is passed to all event handlers
+            handleObj = jQuery.extend({
+                type: type,
+                origType: origType,
+                data: data,
+                handler: handler,
+                guid: handler.guid,
+                selector: selector,
+                needsContext: selector && jQuery.expr.match.needsContext.test(selector),
+                namespace: namespaces.join(".")
+            }, handleObjIn);
+
+            // Init the event handler queue if we're the first
+            if (!(handlers = events[type])) {
+                handlers = events[type] = [];
+                handlers.delegateCount = 0;
+
+                // Only use addEventListener if the special events handler returns false
+                if (!special.setup ||
+                    special.setup.call(elem, data, namespaces, eventHandle) === false) {
+
+                    if (elem.addEventListener) {
+                        elem.addEventListener(type, eventHandle);
+                    }
+                }
+            }
+
+            if (special.add) {
+                special.add.call(elem, handleObj);
+
+                if (!handleObj.handler.guid) {
+                    handleObj.handler.guid = handler.guid;
+                }
+            }
+
+            // Add to the element's handler list, delegates in front
+            if (selector) {
+                handlers.splice(handlers.delegateCount++, 0, handleObj);
+            } else {
+                handlers.push(handleObj);
+            }
+
+            // Keep track of which events have ever been used, for event optimization
+            jQuery.event.global[type] = true;
+        }
+
+    },
+
+    // Detach an event or set of events from an element
+    remove: function (elem, types, handler, selector, mappedTypes) {
+
+        var j, origCount, tmp,
+            events, t, handleObj,
+            special, handlers, type, namespaces, origType,
+            elemData = dataPriv.hasData(elem) && dataPriv.get(elem);
+
+        if (!elemData || !(events = elemData.events)) {
+            return;
+        }
+
+        // Once for each type.namespace in types; type may be omitted
+        types = (types || "").match(rnothtmlwhite) || [""];
+        t = types.length;
+        while (t--) {
+            tmp = rtypenamespace.exec(types[t]) || [];
+            type = origType = tmp[1];
+            namespaces = (tmp[2] || "").split(".").sort();
+
+            // Unbind all events (on this namespace, if provided) for the element
+            if (!type) {
+                for (type in events) {
+                    jQuery.event.remove(elem, type + types[t], handler, selector, true);
+                }
+                continue;
+            }
+
+            special = jQuery.event.special[type] || {};
+            type = (selector ? special.delegateType : special.bindType) || type;
+            handlers = events[type] || [];
+            tmp = tmp[2] &&
+                new RegExp("(^|\\.)" + namespaces.join("\\.(?:.*\\.|)") + "(\\.|$)");
+
+            // Remove matching events
+            origCount = j = handlers.length;
+            while (j--) {
+                handleObj = handlers[j];
+
+                if ((mappedTypes || origType === handleObj.origType) &&
+                    (!handler || handler.guid === handleObj.guid) &&
+                    (!tmp || tmp.test(handleObj.namespace)) &&
+                    (!selector || selector === handleObj.selector ||
+                        selector === "**" && handleObj.selector)) {
+                    handlers.splice(j, 1);
+
+                    if (handleObj.selector) {
+                        handlers.delegateCount--;
+                    }
+                    if (special.remove) {
+                        special.remove.call(elem, handleObj);
+                    }
+                }
+            }
+
+            // Remove generic event handler if we removed something and no more handlers exist
+            // (avoids potential for endless recursion during removal of special event handlers)
+            if (origCount && !handlers.length) {
+                if (!special.teardown ||
+                    special.teardown.call(elem, namespaces, elemData.handle) === false) {
+
+                    jQuery.removeEvent(elem, type, elemData.handle);
+                }
+
+                delete events[type];
+            }
+        }
+
+        // Remove data and the expando if it's no longer used
+        if (jQuery.isEmptyObject(events)) {
+            dataPriv.remove(elem, "handle events");
+        }
+    },
+
+    dispatch: function (nativeEvent) {
+
+        // Make a writable jQuery.Event from the native event object
+        var event = jQuery.event.fix(nativeEvent);
+
+        var i, j, ret, matched, handleObj, handlerQueue,
+            args = new Array(arguments.length),
+            handlers = (dataPriv.get(this, "events") || {})[event.type] || [],
+            special = jQuery.event.special[event.type] || {};
+
+        // Use the fix-ed jQuery.Event rather than the (read-only) native event
+        args[0] = event;
+
+        for (i = 1; i < arguments.length; i++) {
+            args[i] = arguments[i];
+        }
+
+        event.delegateTarget = this;
+
+        // Call the preDispatch hook for the mapped type, and let it bail if desired
+        if (special.preDispatch && special.preDispatch.call(this, event) === false) {
+            return;
+        }
+
+        // Determine handlers
+        handlerQueue = jQuery.event.handlers.call(this, event, handlers);
+
+        // Run delegates first; they may want to stop propagation beneath us
+        i = 0;
+        while ((matched = handlerQueue[i++]) && !event.isPropagationStopped()) {
+            event.currentTarget = matched.elem;
+
+            j = 0;
+            while ((handleObj = matched.handlers[j++]) &&
+            !event.isImmediatePropagationStopped()) {
+
+                // Triggered event must either 1) have no namespace, or 2) have namespace(s)
+                // a subset or equal to those in the bound event (both can have no namespace).
+                if (!event.rnamespace || event.rnamespace.test(handleObj.namespace)) {
+
+                    event.handleObj = handleObj;
+                    event.data = handleObj.data;
+
+                    ret = ((jQuery.event.special[handleObj.origType] || {}).handle ||
+                        handleObj.handler).apply(matched.elem, args);
+
+                    if (ret !== undefined) {
+                        if ((event.result = ret) === false) {
+                            event.preventDefault();
+                            event.stopPropagation();
+                        }
+                    }
+                }
+            }
+        }
+
+        // Call the postDispatch hook for the mapped type
+        if (special.postDispatch) {
+            special.postDispatch.call(this, event);
+        }
+
+        return event.result;
+    },
+
+    handlers: function (event, handlers) {
+        var i, handleObj, sel, matchedHandlers, matchedSelectors,
+            handlerQueue = [],
+            delegateCount = handlers.delegateCount,
+            cur = event.target;
+
+        // Find delegate handlers
+        if (delegateCount &&
+
+            // Support: IE <=9
+            // Black-hole SVG <use> instance trees (trac-13180)
+            cur.nodeType &&
+
+            // Support: Firefox <=42
+            // Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861)
+            // https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click
+            // Support: IE 11 only
+            // ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343)
+            !(event.type === "click" && event.button >= 1)) {
+
+            for (; cur !== this; cur = cur.parentNode || this) {
+
+                // Don't check non-elements (#13208)
+                // Don't process clicks on disabled elements (#6911, #8165, #11382, #11764)
+                if (cur.nodeType === 1 && !(event.type === "click" && cur.disabled === true)) {
+                    matchedHandlers = [];
+                    matchedSelectors = {};
+                    for (i = 0; i < delegateCount; i++) {
+                        handleObj = handlers[i];
+
+                        // Don't conflict with Object.prototype properties (#13203)
+                        sel = handleObj.selector + " ";
+
+                        if (matchedSelectors[sel] === undefined) {
+                            matchedSelectors[sel] = handleObj.needsContext ?
+                                jQuery(sel, this).index(cur) > -1 :
+                                jQuery.find(sel, this, null, [cur]).length;
+                        }
+                        if (matchedSelectors[sel]) {
+                            matchedHandlers.push(handleObj);
+                        }
+                    }
+                    if (matchedHandlers.length) {
+                        handlerQueue.push({elem: cur, handlers: matchedHandlers});
+                    }
+                }
+            }
+        }
+
+        // Add the remaining (directly-bound) handlers
+        cur = this;
+        if (delegateCount < handlers.length) {
+            handlerQueue.push({elem: cur, handlers: handlers.slice(delegateCount)});
+        }
+
+        return handlerQueue;
+    },
+
+    addProp: function (name, hook) {
+        Object.defineProperty(jQuery.Event.prototype, name, {
+            enumerable: true,
+            configurable: true,
+
+            get: isFunction(hook) ?
+                function () {
+                    if (this.originalEvent) {
+                        return hook(this.originalEvent);
+                    }
+                } :
+                function () {
+                    if (this.originalEvent) {
+                        return this.originalEvent[name];
+                    }
+                },
+
+            set: function (value) {
+                Object.defineProperty(this, name, {
+                    enumerable: true,
+                    configurable: true,
+                    writable: true,
+                    value: value
+                });
+            }
+        });
+    },
+
+    fix: function (originalEvent) {
+        return originalEvent[jQuery.expando] ?
+            originalEvent :
+            new jQuery.Event(originalEvent);
+    },
+
+    special: {
+        load: {
+
+            // Prevent triggered image.load events from bubbling to window.load
+            noBubble: true
+        },
+        focus: {
+
+            // Fire native event if possible so blur/focus sequence is correct
+            trigger: function () {
+                if (this !== safeActiveElement() && this.focus) {
+                    this.focus();
+                    return false;
+                }
+            },
+            delegateType: "focusin"
+        },
+        blur: {
+            trigger: function () {
+                if (this === safeActiveElement() && this.blur) {
+                    this.blur();
+                    return false;
+                }
+            },
+            delegateType: "focusout"
+        },
+        click: {
+
+            // For checkbox, fire native event so checked state will be right
+            trigger: function () {
+                if (this.type === "checkbox" && this.click && nodeName(this, "input")) {
+                    this.click();
+                    return false;
+                }
+            },
+
+            // For cross-browser consistency, don't fire native .click() on links
+            _default: function (event) {
+                return nodeName(event.target, "a");
+            }
+        },
+
+        beforeunload: {
+            postDispatch: function (event) {
+
+                // Support: Firefox 20+
+                // Firefox doesn't alert if the returnValue field is not set.
+                if (event.result !== undefined && event.originalEvent) {
+                    event.originalEvent.returnValue = event.result;
+                }
+            }
+        }
+    }
+};
+
+jQuery.removeEvent = function (elem, type, handle) {
+
+    // This "if" is needed for plain objects
+    if (elem.removeEventListener) {
+        elem.removeEventListener(type, handle);
+    }
+};
+
+jQuery.Event = function (src, props) {
+
+    // Allow instantiation without the 'new' keyword
+    if (!(this instanceof jQuery.Event)) {
+        return new jQuery.Event(src, props);
+    }
+
+    // Event object
+    if (src && src.type) {
+        this.originalEvent = src;
+        this.type = src.type;
+
+        // Events bubbling up the document may have been marked as prevented
+        // by a handler lower down the tree; reflect the correct value.
+        this.isDefaultPrevented = src.defaultPrevented ||
+        src.defaultPrevented === undefined &&
+
+        // Support: Android <=2.3 only
+        src.returnValue === false ?
+            returnTrue :
+            returnFalse;
+
+        // Create target properties
+        // Support: Safari <=6 - 7 only
+        // Target should not be a text node (#504, #13143)
+        this.target = (src.target && src.target.nodeType === 3) ?
+            src.target.parentNode :
+            src.target;
+
+        this.currentTarget = src.currentTarget;
+        this.relatedTarget = src.relatedTarget;
+
+        // Event type
+    } else {
+        this.type = src;
+    }
+
+    // Put explicitly provided properties onto the event object
+    if (props) {
+        jQuery.extend(this, props);
+    }
+
+    // Create a timestamp if incoming event doesn't have one
+    this.timeStamp = src && src.timeStamp || Date.now();
+
+    // Mark it as fixed
+    this[jQuery.expando] = true;
+};
+
+// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
+// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
+jQuery.Event.prototype = {
+    constructor: jQuery.Event,
+    isDefaultPrevented: returnFalse,
+    isPropagationStopped: returnFalse,
+    isImmediatePropagationStopped: returnFalse,
+    isSimulated: false,
+
+    preventDefault: function () {
+        var e = this.originalEvent;
+
+        this.isDefaultPrevented = returnTrue;
+
+        if (e && !this.isSimulated) {
+            e.preventDefault();
+        }
+    },
+    stopPropagation: function () {
+        var e = this.originalEvent;
+
+        this.isPropagationStopped = returnTrue;
+
+        if (e && !this.isSimulated) {
+            e.stopPropagation();
+        }
+    },
+    stopImmediatePropagation: function () {
+        var e = this.originalEvent;
+
+        this.isImmediatePropagationStopped = returnTrue;
+
+        if (e && !this.isSimulated) {
+            e.stopImmediatePropagation();
+        }
+
+        this.stopPropagation();
+    }
+};
+
+// Includes all common event props including KeyEvent and MouseEvent specific props
+jQuery.each({
+    altKey: true,
+    bubbles: true,
+    cancelable: true,
+    changedTouches: true,
+    ctrlKey: true,
+    detail: true,
+    eventPhase: true,
+    metaKey: true,
+    pageX: true,
+    pageY: true,
+    shiftKey: true,
+    view: true,
+    "char": true,
+    charCode: true,
+    key: true,
+    keyCode: true,
+    button: true,
+    buttons: true,
+    clientX: true,
+    clientY: true,
+    offsetX: true,
+    offsetY: true,
+    pointerId: true,
+    pointerType: true,
+    screenX: true,
+    screenY: true,
+    targetTouches: true,
+    toElement: true,
+    touches: true,
+
+    which: function (event) {
+        var button = event.button;
+
+        // Add which for key events
+        if (event.which == null && rkeyEvent.test(event.type)) {
+            return event.charCode != null ? event.charCode : event.keyCode;
+        }
+
+        // Add which for click: 1 === left; 2 === middle; 3 === right
+        if (!event.which && button !== undefined && rmouseEvent.test(event.type)) {
+            if (button & 1) {
+                return 1;
+            }
+
+            if (button & 2) {
+                return 3;
+            }
+
+            if (button & 4) {
+                return 2;
+            }
+
+            return 0;
+        }
+
+        return event.which;
+    }
+}, jQuery.event.addProp);
+
+// Create mouseenter/leave events using mouseover/out and event-time checks
+// so that event delegation works in jQuery.
+// Do the same for pointerenter/pointerleave and pointerover/pointerout
+//
+// Support: Safari 7 only
+// Safari sends mouseenter too often; see:
+// https://bugs.chromium.org/p/chromium/issues/detail?id=470258
+// for the description of the bug (it existed in older Chrome versions as well).
+jQuery.each({
+    mouseenter: "mouseover",
+    mouseleave: "mouseout",
+    pointerenter: "pointerover",
+    pointerleave: "pointerout"
+}, function (orig, fix) {
+    jQuery.event.special[orig] = {
+        delegateType: fix,
+        bindType: fix,
+
+        handle: function (event) {
+            var ret,
+                target = this,
+                related = event.relatedTarget,
+                handleObj = event.handleObj;
+
+            // For mouseenter/leave call the handler if related is outside the target.
+            // NB: No relatedTarget if the mouse left/entered the browser window
+            if (!related || (related !== target && !jQuery.contains(target, related))) {
+                event.type = handleObj.origType;
+                ret = handleObj.handler.apply(this, arguments);
+                event.type = fix;
+            }
+            return ret;
+        }
+    };
+});
+
+jQuery.fn.extend({
+
+    on: function (types, selector, data, fn) {
+        return on(this, types, selector, data, fn);
+    },
+    one: function (types, selector, data, fn) {
+        return on(this, types, selector, data, fn, 1);
+    },
+    off: function (types, selector, fn) {
+        var handleObj, type;
+        if (types && types.preventDefault && types.handleObj) {
+
+            // ( event )  dispatched jQuery.Event
+            handleObj = types.handleObj;
+            jQuery(types.delegateTarget).off(
+                handleObj.namespace ?
+                    handleObj.origType + "." + handleObj.namespace :
+                    handleObj.origType,
+                handleObj.selector,
+                handleObj.handler
+            );
+            return this;
+        }
+        if (typeof types === "object") {
+
+            // ( types-object [, selector] )
+            for (type in types) {
+                this.off(type, selector, types[type]);
+            }
+            return this;
+        }
+        if (selector === false || typeof selector === "function") {
+
+            // ( types [, fn] )
+            fn = selector;
+            selector = undefined;
+        }
+        if (fn === false) {
+            fn = returnFalse;
+        }
+        return this.each(function () {
+            jQuery.event.remove(this, types, fn, selector);
+        });
+    }
+});
+
+
+var
+
+    /* eslint-disable max-len */
+
+    // See https://github.com/eslint/eslint/issues/3229
+    rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([a-z][^\/\0>\x20\t\r\n\f]*)[^>]*)\/>/gi,
+
+    /* eslint-enable */
+
+    // Support: IE <=10 - 11, Edge 12 - 13 only
+    // In IE/Edge using regex groups here causes severe slowdowns.
+    // See https://connect.microsoft.com/IE/feedback/details/1736512/
+    rnoInnerhtml = /<script|<style|<link/i,
+
+    // checked="checked" or checked
+    rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
+    rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g;
+
+// Prefer a tbody over its parent table for containing new rows
+function manipulationTarget(elem, content) {
+    if (nodeName(elem, "table") &&
+        nodeName(content.nodeType !== 11 ? content : content.firstChild, "tr")) {
+
+        return jQuery(elem).children("tbody")[0] || elem;
+    }
+
+    return elem;
+}
+
+// Replace/restore the type attribute of script elements for safe DOM manipulation
+function disableScript(elem) {
+    elem.type = (elem.getAttribute("type") !== null) + "/" + elem.type;
+    return elem;
+}
+
+function restoreScript(elem) {
+    if ((elem.type || "").slice(0, 5) === "true/") {
+        elem.type = elem.type.slice(5);
+    } else {
+        elem.removeAttribute("type");
+    }
+
+    return elem;
+}
+
+function cloneCopyEvent(src, dest) {
+    var i, l, type, pdataOld, pdataCur, udataOld, udataCur, events;
+
+    if (dest.nodeType !== 1) {
+        return;
+    }
+
+    // 1. Copy private data: events, handlers, etc.
+    if (dataPriv.hasData(src)) {
+        pdataOld = dataPriv.access(src);
+        pdataCur = dataPriv.set(dest, pdataOld);
+        events = pdataOld.events;
+
+        if (events) {
+            delete pdataCur.handle;
+            pdataCur.events = {};
+
+            for (type in events) {
+                for (i = 0, l = events[type].length; i < l; i++) {
+                    jQuery.event.add(dest, type, events[type][i]);
+                }
+            }
+        }
+    }
+
+    // 2. Copy user data
+    if (dataUser.hasData(src)) {
+        udataOld = dataUser.access(src);
+        udataCur = jQuery.extend({}, udataOld);
+
+        dataUser.set(dest, udataCur);
+    }
+}
+
+// Fix IE bugs, see support tests
+function fixInput(src, dest) {
+    var nodeName = dest.nodeName.toLowerCase();
+
+    // Fails to persist the checked state of a cloned checkbox or radio button.
+    if (nodeName === "input" && rcheckableType.test(src.type)) {
+        dest.checked = src.checked;
+
+        // Fails to return the selected option to the default selected state when cloning options
+    } else if (nodeName === "input" || nodeName === "textarea") {
+        dest.defaultValue = src.defaultValue;
+    }
+}
+
+function domManip(collection, args, callback, ignored) {
+
+    // Flatten any nested arrays
+    args = concat.apply([], args);
+
+    var fragment, first, scripts, hasScripts, node, doc,
+        i = 0,
+        l = collection.length,
+        iNoClone = l - 1,
+        value = args[0],
+        valueIsFunction = isFunction(value);
+
+    // We can't cloneNode fragments that contain checked, in WebKit
+    if (valueIsFunction ||
+        (l > 1 && typeof value === "string" &&
+            !support.checkClone && rchecked.test(value))) {
+        return collection.each(function (index) {
+            var self = collection.eq(index);
+            if (valueIsFunction) {
+                args[0] = value.call(this, index, self.html());
+            }
+            domManip(self, args, callback, ignored);
+        });
+    }
+
+    if (l) {
+        fragment = buildFragment(args, collection[0].ownerDocument, false, collection, ignored);
+        first = fragment.firstChild;
+
+        if (fragment.childNodes.length === 1) {
+            fragment = first;
+        }
+
+        // Require either new content or an interest in ignored elements to invoke the callback
+        if (first || ignored) {
+            scripts = jQuery.map(getAll(fragment, "script"), disableScript);
+            hasScripts = scripts.length;
+
+            // Use the original fragment for the last item
+            // instead of the first because it can end up
+            // being emptied incorrectly in certain situations (#8070).
+            for (; i < l; i++) {
+                node = fragment;
+
+                if (i !== iNoClone) {
+                    node = jQuery.clone(node, true, true);
+
+                    // Keep references to cloned scripts for later restoration
+                    if (hasScripts) {
+
+                        // Support: Android <=4.0 only, PhantomJS 1 only
+                        // push.apply(_, arraylike) throws on ancient WebKit
+                        jQuery.merge(scripts, getAll(node, "script"));
+                    }
+                }
+
+                callback.call(collection[i], node, i);
+            }
+
+            if (hasScripts) {
+                doc = scripts[scripts.length - 1].ownerDocument;
+
+                // Reenable scripts
+                jQuery.map(scripts, restoreScript);
+
+                // Evaluate executable scripts on first document insertion
+                for (i = 0; i < hasScripts; i++) {
+                    node = scripts[i];
+                    if (rscriptType.test(node.type || "") &&
+                        !dataPriv.access(node, "globalEval") &&
+                        jQuery.contains(doc, node)) {
+
+                        if (node.src && (node.type || "").toLowerCase() !== "module") {
+
+                            // Optional AJAX dependency, but won't run scripts if not present
+                            if (jQuery._evalUrl) {
+                                jQuery._evalUrl(node.src);
+                            }
+                        } else {
+                            DOMEval(node.textContent.replace(rcleanScript, ""), doc, node);
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    return collection;
+}
+
+function remove(elem, selector, keepData) {
+    var node,
+        nodes = selector ? jQuery.filter(selector, elem) : elem,
+        i = 0;
+
+    for (; (node = nodes[i]) != null; i++) {
+        if (!keepData && node.nodeType === 1) {
+            jQuery.cleanData(getAll(node));
+        }
+
+        if (node.parentNode) {
+            if (keepData && jQuery.contains(node.ownerDocument, node)) {
+                setGlobalEval(getAll(node, "script"));
+            }
+            node.parentNode.removeChild(node);
+        }
+    }
+
+    return elem;
+}
+
+jQuery.extend({
+    htmlPrefilter: function (html) {
+        return html.replace(rxhtmlTag, "<$1></$2>");
+    },
+
+    clone: function (elem, dataAndEvents, deepDataAndEvents) {
+        var i, l, srcElements, destElements,
+            clone = elem.cloneNode(true),
+            inPage = jQuery.contains(elem.ownerDocument, elem);
+
+        // Fix IE cloning issues
+        if (!support.noCloneChecked && (elem.nodeType === 1 || elem.nodeType === 11) &&
+            !jQuery.isXMLDoc(elem)) {
+
+            // We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2
+            destElements = getAll(clone);
+            srcElements = getAll(elem);
+
+            for (i = 0, l = srcElements.length; i < l; i++) {
+                fixInput(srcElements[i], destElements[i]);
+            }
+        }
+
+        // Copy the events from the original to the clone
+        if (dataAndEvents) {
+            if (deepDataAndEvents) {
+                srcElements = srcElements || getAll(elem);
+                destElements = destElements || getAll(clone);
+
+                for (i = 0, l = srcElements.length; i < l; i++) {
+                    cloneCopyEvent(srcElements[i], destElements[i]);
+                }
+            } else {
+                cloneCopyEvent(elem, clone);
+            }
+        }
+
+        // Preserve script evaluation history
+        destElements = getAll(clone, "script");
+        if (destElements.length > 0) {
+            setGlobalEval(destElements, !inPage && getAll(elem, "script"));
+        }
+
+        // Return the cloned set
+        return clone;
+    },
+
+    cleanData: function (elems) {
+        var data, elem, type,
+            special = jQuery.event.special,
+            i = 0;
+
+        for (; (elem = elems[i]) !== undefined; i++) {
+            if (acceptData(elem)) {
+                if ((data = elem[dataPriv.expando])) {
+                    if (data.events) {
+                        for (type in data.events) {
+                            if (special[type]) {
+                                jQuery.event.remove(elem, type);
+
+                                // This is a shortcut to avoid jQuery.event.remove's overhead
+                            } else {
+                                jQuery.removeEvent(elem, type, data.handle);
+                            }
+                        }
+                    }
+
+                    // Support: Chrome <=35 - 45+
+                    // Assign undefined instead of using delete, see Data#remove
+                    elem[dataPriv.expando] = undefined;
+                }
+                if (elem[dataUser.expando]) {
+
+                    // Support: Chrome <=35 - 45+
+                    // Assign undefined instead of using delete, see Data#remove
+                    elem[dataUser.expando] = undefined;
+                }
+            }
+        }
+    }
+});
+
+jQuery.fn.extend({
+    detach: function (selector) {
+        return remove(this, selector, true);
+    },
+
+    remove: function (selector) {
+        return remove(this, selector);
+    },
+
+    text: function (value) {
+        return access(this, function (value) {
+            return value === undefined ?
+                jQuery.text(this) :
+                this.empty().each(function () {
+                    if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) {
+                        this.textContent = value;
+                    }
+                });
+        }, null, value, arguments.length);
+    },
+
+    append: function () {
+        return domManip(this, arguments, function (elem) {
+            if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) {
+                var target = manipulationTarget(this, elem);
+                target.appendChild(elem);
+            }
+        });
+    },
+
+    prepend: function () {
+        return domManip(this, arguments, function (elem) {
+            if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) {
+                var target = manipulationTarget(this, elem);
+                target.insertBefore(elem, target.firstChild);
+            }
+        });
+    },
+
+    before: function () {
+        return domManip(this, arguments, function (elem) {
+            if (this.parentNode) {
+                this.parentNode.insertBefore(elem, this);
+            }
+        });
+    },
+
+    after: function () {
+        return domManip(this, arguments, function (elem) {
+            if (this.parentNode) {
+                this.parentNode.insertBefore(elem, this.nextSibling);
+            }
+        });
+    },
+
+    empty: function () {
+        var elem,
+            i = 0;
+
+        for (; (elem = this[i]) != null; i++) {
+            if (elem.nodeType === 1) {
+
+                // Prevent memory leaks
+                jQuery.cleanData(getAll(elem, false));
+
+                // Remove any remaining nodes
+                elem.textContent = "";
+            }
+        }
+
+        return this;
+    },
+
+    clone: function (dataAndEvents, deepDataAndEvents) {
+        dataAndEvents = dataAndEvents == null ? false : dataAndEvents;
+        deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;
+
+        return this.map(function () {
+            return jQuery.clone(this, dataAndEvents, deepDataAndEvents);
+        });
+    },
+
+    html: function (value) {
+        return access(this, function (value) {
+            var elem = this[0] || {},
+                i = 0,
+                l = this.length;
+
+            if (value === undefined && elem.nodeType === 1) {
+                return elem.innerHTML;
+            }
+
+            // See if we can take a shortcut and just use innerHTML
+            if (typeof value === "string" && !rnoInnerhtml.test(value) &&
+                !wrapMap[(rtagName.exec(value) || ["", ""])[1].toLowerCase()]) {
+
+                value = jQuery.htmlPrefilter(value);
+
+                try {
+                    for (; i < l; i++) {
+                        elem = this[i] || {};
+
+                        // Remove element nodes and prevent memory leaks
+                        if (elem.nodeType === 1) {
+                            jQuery.cleanData(getAll(elem, false));
+                            elem.innerHTML = value;
+                        }
+                    }
+
+                    elem = 0;
+
+                    // If using innerHTML throws an exception, use the fallback method
+                } catch (e) {
+                }
+            }
+
+            if (elem) {
+                this.empty().append(value);
+            }
+        }, null, value, arguments.length);
+    },
+
+    replaceWith: function () {
+        var ignored = [];
+
+        // Make the changes, replacing each non-ignored context element with the new content
+        return domManip(this, arguments, function (elem) {
+            var parent = this.parentNode;
+
+            if (jQuery.inArray(this, ignored) < 0) {
+                jQuery.cleanData(getAll(this));
+                if (parent) {
+                    parent.replaceChild(elem, this);
+                }
+            }
+
+            // Force callback invocation
+        }, ignored);
+    }
+});
+
+jQuery.each({
+    appendTo: "append",
+    prependTo: "prepend",
+    insertBefore: "before",
+    insertAfter: "after",
+    replaceAll: "replaceWith"
+}, function (name, original) {
+    jQuery.fn[name] = function (selector) {
+        var elems,
+            ret = [],
+            insert = jQuery(selector),
+            last = insert.length - 1,
+            i = 0;
+
+        for (; i <= last; i++) {
+            elems = i === last ? this : this.clone(true);
+            jQuery(insert[i])[original](elems);
+
+            // Support: Android <=4.0 only, PhantomJS 1 only
+            // .get() because push.apply(_, arraylike) throws on ancient WebKit
+            push.apply(ret, elems.get());
+        }
+
+        return this.pushStack(ret);
+    };
+});
+var rnumnonpx = new RegExp("^(" + pnum + ")(?!px)[a-z%]+$", "i");
+
+var getStyles = function (elem) {
+
+    // Support: IE <=11 only, Firefox <=30 (#15098, #14150)
+    // IE throws on elements created in popups
+    // FF meanwhile throws on frame elements through "defaultView.getComputedStyle"
+    var view = elem.ownerDocument.defaultView;
+
+    if (!view || !view.opener) {
+        view = window;
+    }
+
+    return view.getComputedStyle(elem);
+};
+
+var rboxStyle = new RegExp(cssExpand.join("|"), "i");
+
+
+(function () {
+
+    // Executing both pixelPosition & boxSizingReliable tests require only one layout
+    // so they're executed at the same time to save the second computation.
+    function computeStyleTests() {
+
+        // This is a singleton, we need to execute it only once
+        if (!div) {
+            return;
+        }
+
+        container.style.cssText = "position:absolute;left:-11111px;width:60px;" +
+            "margin-top:1px;padding:0;border:0";
+        div.style.cssText =
+            "position:relative;display:block;box-sizing:border-box;overflow:scroll;" +
+            "margin:auto;border:1px;padding:1px;" +
+            "width:60%;top:1%";
+        documentElement.appendChild(container).appendChild(div);
+
+        var divStyle = window.getComputedStyle(div);
+        pixelPositionVal = divStyle.top !== "1%";
+
+        // Support: Android 4.0 - 4.3 only, Firefox <=3 - 44
+        reliableMarginLeftVal = roundPixelMeasures(divStyle.marginLeft) === 12;
+
+        // Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3
+        // Some styles come back with percentage values, even though they shouldn't
+        div.style.right = "60%";
+        pixelBoxStylesVal = roundPixelMeasures(divStyle.right) === 36;
+
+        // Support: IE 9 - 11 only
+        // Detect misreporting of content dimensions for box-sizing:border-box elements
+        boxSizingReliableVal = roundPixelMeasures(divStyle.width) === 36;
+
+        // Support: IE 9 only
+        // Detect overflow:scroll screwiness (gh-3699)
+        div.style.position = "absolute";
+        scrollboxSizeVal = div.offsetWidth === 36 || "absolute";
+
+        documentElement.removeChild(container);
+
+        // Nullify the div so it wouldn't be stored in the memory and
+        // it will also be a sign that checks already performed
+        div = null;
+    }
+
+    function roundPixelMeasures(measure) {
+        return Math.round(parseFloat(measure));
+    }
+
+    var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal,
+        reliableMarginLeftVal,
+        container = document$1.createElement("div"),
+        div = document$1.createElement("div");
+
+    // Finish early in limited (non-browser) environments
+    if (!div.style) {
+        return;
+    }
+
+    // Support: IE <=9 - 11 only
+    // Style of cloned element affects source element cloned (#8908)
+    div.style.backgroundClip = "content-box";
+    div.cloneNode(true).style.backgroundClip = "";
+    support.clearCloneStyle = div.style.backgroundClip === "content-box";
+
+    jQuery.extend(support, {
+        boxSizingReliable: function () {
+            computeStyleTests();
+            return boxSizingReliableVal;
+        },
+        pixelBoxStyles: function () {
+            computeStyleTests();
+            return pixelBoxStylesVal;
+        },
+        pixelPosition: function () {
+            computeStyleTests();
+            return pixelPositionVal;
+        },
+        reliableMarginLeft: function () {
+            computeStyleTests();
+            return reliableMarginLeftVal;
+        },
+        scrollboxSize: function () {
+            computeStyleTests();
+            return scrollboxSizeVal;
+        }
+    });
+})();
+
+
+function curCSS(elem, name, computed) {
+    var width, minWidth, maxWidth, ret,
+
+        // Support: Firefox 51+
+        // Retrieving style before computed somehow
+        // fixes an issue with getting wrong values
+        // on detached elements
+        style = elem.style;
+
+    computed = computed || getStyles(elem);
+
+    // getPropertyValue is needed for:
+    //   .css('filter') (IE 9 only, #12537)
+    //   .css('--customProperty) (#3144)
+    if (computed) {
+        ret = computed.getPropertyValue(name) || computed[name];
+
+        if (ret === "" && !jQuery.contains(elem.ownerDocument, elem)) {
+            ret = jQuery.style(elem, name);
+        }
+
+        // A tribute to the "awesome hack by Dean Edwards"
+        // Android Browser returns percentage for some values,
+        // but width seems to be reliably pixels.
+        // This is against the CSSOM draft spec:
+        // https://drafts.csswg.org/cssom/#resolved-values
+        if (!support.pixelBoxStyles() && rnumnonpx.test(ret) && rboxStyle.test(name)) {
+
+            // Remember the original values
+            width = style.width;
+            minWidth = style.minWidth;
+            maxWidth = style.maxWidth;
+
+            // Put in the new values to get a computed value out
+            style.minWidth = style.maxWidth = style.width = ret;
+            ret = computed.width;
+
+            // Revert the changed values
+            style.width = width;
+            style.minWidth = minWidth;
+            style.maxWidth = maxWidth;
+        }
+    }
+
+    return ret !== undefined ?
+
+        // Support: IE <=9 - 11 only
+        // IE returns zIndex value as an integer.
+        ret + "" :
+        ret;
+}
+
+
+function addGetHookIf(conditionFn, hookFn) {
+
+    // Define the hook, we'll check on the first run if it's really needed.
+    return {
+        get: function () {
+            if (conditionFn()) {
+
+                // Hook not needed (or it's not possible to use it due
+                // to missing dependency), remove it.
+                delete this.get;
+                return;
+            }
+
+            // Hook needed; redefine it so that the support test is not executed again.
+            return (this.get = hookFn).apply(this, arguments);
+        }
+    };
+}
+
+
+var
+
+    // Swappable if display is none or starts with table
+    // except "table", "table-cell", or "table-caption"
+    // See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display
+    rdisplayswap = /^(none|table(?!-c[ea]).+)/,
+    rcustomProp = /^--/,
+    cssShow = {position: "absolute", visibility: "hidden", display: "block"},
+    cssNormalTransform = {
+        letterSpacing: "0",
+        fontWeight: "400"
+    },
+
+    cssPrefixes = ["Webkit", "Moz", "ms"],
+    emptyStyle = document$1.createElement("div").style;
+
+// Return a css property mapped to a potentially vendor prefixed property
+function vendorPropName(name) {
+
+    // Shortcut for names that are not vendor prefixed
+    if (name in emptyStyle) {
+        return name;
+    }
+
+    // Check for vendor prefixed names
+    var capName = name[0].toUpperCase() + name.slice(1),
+        i = cssPrefixes.length;
+
+    while (i--) {
+        name = cssPrefixes[i] + capName;
+        if (name in emptyStyle) {
+            return name;
+        }
+    }
+}
+
+// Return a property mapped along what jQuery.cssProps suggests or to
+// a vendor prefixed property.
+function finalPropName(name) {
+    var ret = jQuery.cssProps[name];
+    if (!ret) {
+        ret = jQuery.cssProps[name] = vendorPropName(name) || name;
+    }
+    return ret;
+}
+
+function setPositiveNumber(elem, value, subtract) {
+
+    // Any relative (+/-) values have already been
+    // normalized at this point
+    var matches = rcssNum.exec(value);
+    return matches ?
+
+        // Guard against undefined "subtract", e.g., when used as in cssHooks
+        Math.max(0, matches[2] - (subtract || 0)) + (matches[3] || "px") :
+        value;
+}
+
+function boxModelAdjustment(elem, dimension, box, isBorderBox, styles, computedVal) {
+    var i = dimension === "width" ? 1 : 0,
+        extra = 0,
+        delta = 0;
+
+    // Adjustment may not be necessary
+    if (box === (isBorderBox ? "border" : "content")) {
+        return 0;
+    }
+
+    for (; i < 4; i += 2) {
+
+        // Both box models exclude margin
+        if (box === "margin") {
+            delta += jQuery.css(elem, box + cssExpand[i], true, styles);
+        }
+
+        // If we get here with a content-box, we're seeking "padding" or "border" or "margin"
+        if (!isBorderBox) {
+
+            // Add padding
+            delta += jQuery.css(elem, "padding" + cssExpand[i], true, styles);
+
+            // For "border" or "margin", add border
+            if (box !== "padding") {
+                delta += jQuery.css(elem, "border" + cssExpand[i] + "Width", true, styles);
+
+                // But still keep track of it otherwise
+            } else {
+                extra += jQuery.css(elem, "border" + cssExpand[i] + "Width", true, styles);
+            }
+
+            // If we get here with a border-box (content + padding + border), we're seeking "content" or
+            // "padding" or "margin"
+        } else {
+
+            // For "content", subtract padding
+            if (box === "content") {
+                delta -= jQuery.css(elem, "padding" + cssExpand[i], true, styles);
+            }
+
+            // For "content" or "padding", subtract border
+            if (box !== "margin") {
+                delta -= jQuery.css(elem, "border" + cssExpand[i] + "Width", true, styles);
+            }
+        }
+    }
+
+    // Account for positive content-box scroll gutter when requested by providing computedVal
+    if (!isBorderBox && computedVal >= 0) {
+
+        // offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border
+        // Assuming integer scroll gutter, subtract the rest and round down
+        delta += Math.max(0, Math.ceil(
+            elem["offset" + dimension[0].toUpperCase() + dimension.slice(1)] -
+            computedVal -
+            delta -
+            extra -
+            0.5
+        ));
+    }
+
+    return delta;
+}
+
+function getWidthOrHeight(elem, dimension, extra) {
+
+    // Start with computed style
+    var styles = getStyles(elem),
+        val = curCSS(elem, dimension, styles),
+        isBorderBox = jQuery.css(elem, "boxSizing", false, styles) === "border-box",
+        valueIsBorderBox = isBorderBox;
+
+    // Support: Firefox <=54
+    // Return a confounding non-pixel value or feign ignorance, as appropriate.
+    if (rnumnonpx.test(val)) {
+        if (!extra) {
+            return val;
+        }
+        val = "auto";
+    }
+
+    // Check for style in case a browser which returns unreliable values
+    // for getComputedStyle silently falls back to the reliable elem.style
+    valueIsBorderBox = valueIsBorderBox &&
+        (support.boxSizingReliable() || val === elem.style[dimension]);
+
+    // Fall back to offsetWidth/offsetHeight when value is "auto"
+    // This happens for inline elements with no explicit setting (gh-3571)
+    // Support: Android <=4.1 - 4.3 only
+    // Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602)
+    if (val === "auto" ||
+        !parseFloat(val) && jQuery.css(elem, "display", false, styles) === "inline") {
+
+        val = elem["offset" + dimension[0].toUpperCase() + dimension.slice(1)];
+
+        // offsetWidth/offsetHeight provide border-box values
+        valueIsBorderBox = true;
+    }
+
+    // Normalize "" and auto
+    val = parseFloat(val) || 0;
+
+    // Adjust for the element's box model
+    return (val +
+        boxModelAdjustment(
+            elem,
+            dimension,
+            extra || (isBorderBox ? "border" : "content"),
+            valueIsBorderBox,
+            styles,
+
+            // Provide the current computed size to request scroll gutter calculation (gh-3589)
+            val
+        )
+    ) + "px";
+}
+
+jQuery.extend({
+
+    // Add in style property hooks for overriding the default
+    // behavior of getting and setting a style property
+    cssHooks: {
+        opacity: {
+            get: function (elem, computed) {
+                if (computed) {
+
+                    // We should always get a number back from opacity
+                    var ret = curCSS(elem, "opacity");
+                    return ret === "" ? "1" : ret;
+                }
+            }
+        }
+    },
+
+    // Don't automatically add "px" to these possibly-unitless properties
+    cssNumber: {
+        "animationIterationCount": true,
+        "columnCount": true,
+        "fillOpacity": true,
+        "flexGrow": true,
+        "flexShrink": true,
+        "fontWeight": true,
+        "lineHeight": true,
+        "opacity": true,
+        "order": true,
+        "orphans": true,
+        "widows": true,
+        "zIndex": true,
+        "zoom": true
+    },
+
+    // Add in properties whose names you wish to fix before
+    // setting or getting the value
+    cssProps: {},
+
+    // Get and set the style property on a DOM Node
+    style: function (elem, name, value, extra) {
+
+        // Don't set styles on text and comment nodes
+        if (!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style) {
+            return;
+        }
+
+        // Make sure that we're working with the right name
+        var ret, type, hooks,
+            origName = camelCase(name),
+            isCustomProp = rcustomProp.test(name),
+            style = elem.style;
+
+        // Make sure that we're working with the right name. We don't
+        // want to query the value if it is a CSS custom property
+        // since they are user-defined.
+        if (!isCustomProp) {
+            name = finalPropName(origName);
+        }
+
+        // Gets hook for the prefixed version, then unprefixed version
+        hooks = jQuery.cssHooks[name] || jQuery.cssHooks[origName];
+
+        // Check if we're setting a value
+        if (value !== undefined) {
+            type = typeof value;
+
+            // Convert "+=" or "-=" to relative numbers (#7345)
+            if (type === "string" && (ret = rcssNum.exec(value)) && ret[1]) {
+                value = adjustCSS(elem, name, ret);
+
+                // Fixes bug #9237
+                type = "number";
+            }
+
+            // Make sure that null and NaN values aren't set (#7116)
+            if (value == null || value !== value) {
+                return;
+            }
+
+            // If a number was passed in, add the unit (except for certain CSS properties)
+            if (type === "number") {
+                value += ret && ret[3] || (jQuery.cssNumber[origName] ? "" : "px");
+            }
+
+            // background-* props affect original clone's values
+            if (!support.clearCloneStyle && value === "" && name.indexOf("background") === 0) {
+                style[name] = "inherit";
+            }
+
+            // If a hook was provided, use that value, otherwise just set the specified value
+            if (!hooks || !("set" in hooks) ||
+                (value = hooks.set(elem, value, extra)) !== undefined) {
+
+                if (isCustomProp) {
+                    style.setProperty(name, value);
+                } else {
+                    style[name] = value;
+                }
+            }
+
+        } else {
+
+            // If a hook was provided get the non-computed value from there
+            if (hooks && "get" in hooks &&
+                (ret = hooks.get(elem, false, extra)) !== undefined) {
+
+                return ret;
+            }
+
+            // Otherwise just get the value from the style object
+            return style[name];
+        }
+    },
+
+    css: function (elem, name, extra, styles) {
+        var val, num, hooks,
+            origName = camelCase(name),
+            isCustomProp = rcustomProp.test(name);
+
+        // Make sure that we're working with the right name. We don't
+        // want to modify the value if it is a CSS custom property
+        // since they are user-defined.
+        if (!isCustomProp) {
+            name = finalPropName(origName);
+        }
+
+        // Try prefixed name followed by the unprefixed name
+        hooks = jQuery.cssHooks[name] || jQuery.cssHooks[origName];
+
+        // If a hook was provided get the computed value from there
+        if (hooks && "get" in hooks) {
+            val = hooks.get(elem, true, extra);
+        }
+
+        // Otherwise, if a way to get the computed value exists, use that
+        if (val === undefined) {
+            val = curCSS(elem, name, styles);
+        }
+
+        // Convert "normal" to computed value
+        if (val === "normal" && name in cssNormalTransform) {
+            val = cssNormalTransform[name];
+        }
+
+        // Make numeric if forced or a qualifier was provided and val looks numeric
+        if (extra === "" || extra) {
+            num = parseFloat(val);
+            return extra === true || isFinite(num) ? num || 0 : val;
+        }
+
+        return val;
+    }
+});
+
+jQuery.each(["height", "width"], function (i, dimension) {
+    jQuery.cssHooks[dimension] = {
+        get: function (elem, computed, extra) {
+            if (computed) {
+
+                // Certain elements can have dimension info if we invisibly show them
+                // but it must have a current display style that would benefit
+                return rdisplayswap.test(jQuery.css(elem, "display")) &&
+
+                // Support: Safari 8+
+                // Table columns in Safari have non-zero offsetWidth & zero
+                // getBoundingClientRect().width unless display is changed.
+                // Support: IE <=11 only
+                // Running getBoundingClientRect on a disconnected node
+                // in IE throws an error.
+                (!elem.getClientRects().length || !elem.getBoundingClientRect().width) ?
+                    swap(elem, cssShow, function () {
+                        return getWidthOrHeight(elem, dimension, extra);
+                    }) :
+                    getWidthOrHeight(elem, dimension, extra);
+            }
+        },
+
+        set: function (elem, value, extra) {
+            var matches,
+                styles = getStyles(elem),
+                isBorderBox = jQuery.css(elem, "boxSizing", false, styles) === "border-box",
+                subtract = extra && boxModelAdjustment(
+                    elem,
+                    dimension,
+                    extra,
+                    isBorderBox,
+                    styles
+                );
+
+            // Account for unreliable border-box dimensions by comparing offset* to computed and
+            // faking a content-box to get border and padding (gh-3699)
+            if (isBorderBox && support.scrollboxSize() === styles.position) {
+                subtract -= Math.ceil(
+                    elem["offset" + dimension[0].toUpperCase() + dimension.slice(1)] -
+                    parseFloat(styles[dimension]) -
+                    boxModelAdjustment(elem, dimension, "border", false, styles) -
+                    0.5
+                );
+            }
+
+            // Convert to pixels if value adjustment is needed
+            if (subtract && (matches = rcssNum.exec(value)) &&
+                (matches[3] || "px") !== "px") {
+
+                elem.style[dimension] = value;
+                value = jQuery.css(elem, dimension);
+            }
+
+            return setPositiveNumber(elem, value, subtract);
+        }
+    };
+});
+
+jQuery.cssHooks.marginLeft = addGetHookIf(support.reliableMarginLeft,
+    function (elem, computed) {
+        if (computed) {
+            return (parseFloat(curCSS(elem, "marginLeft")) ||
+                elem.getBoundingClientRect().left -
+                swap(elem, {marginLeft: 0}, function () {
+                    return elem.getBoundingClientRect().left;
+                })
+            ) + "px";
+        }
+    }
+);
+
+// These hooks are used by animate to expand properties
+jQuery.each({
+    margin: "",
+    padding: "",
+    border: "Width"
+}, function (prefix, suffix) {
+    jQuery.cssHooks[prefix + suffix] = {
+        expand: function (value) {
+            var i = 0,
+                expanded = {},
+
+                // Assumes a single number if not a string
+                parts = typeof value === "string" ? value.split(" ") : [value];
+
+            for (; i < 4; i++) {
+                expanded[prefix + cssExpand[i] + suffix] =
+                    parts[i] || parts[i - 2] || parts[0];
+            }
+
+            return expanded;
+        }
+    };
+
+    if (prefix !== "margin") {
+        jQuery.cssHooks[prefix + suffix].set = setPositiveNumber;
+    }
+});
+
+jQuery.fn.extend({
+    css: function (name, value) {
+        return access(this, function (elem, name, value) {
+            var styles, len,
+                map = {},
+                i = 0;
+
+            if (Array.isArray(name)) {
+                styles = getStyles(elem);
+                len = name.length;
+
+                for (; i < len; i++) {
+                    map[name[i]] = jQuery.css(elem, name[i], false, styles);
+                }
+
+                return map;
+            }
+
+            return value !== undefined ?
+                jQuery.style(elem, name, value) :
+                jQuery.css(elem, name);
+        }, name, value, arguments.length > 1);
+    }
+});
+
+
+// Based off of the plugin by Clint Helfers, with permission.
+// https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/
+jQuery.fn.delay = function (time, type) {
+    time = jQuery.fx ? jQuery.fx.speeds[time] || time : time;
+    type = type || "fx";
+
+    return this.queue(type, function (next, hooks) {
+        var timeout = window.setTimeout(next, time);
+        hooks.stop = function () {
+            window.clearTimeout(timeout);
+        };
+    });
+};
+
+
+(function () {
+    var input = document$1.createElement("input"),
+        select = document$1.createElement("select"),
+        opt = select.appendChild(document$1.createElement("option"));
+
+    input.type = "checkbox";
+
+    // Support: Android <=4.3 only
+    // Default value for a checkbox should be "on"
+    support.checkOn = input.value !== "";
+
+    // Support: IE <=11 only
+    // Must access selectedIndex to make default options select
+    support.optSelected = opt.selected;
+
+    // Support: IE <=11 only
+    // An input loses its value after becoming a radio
+    input = document$1.createElement("input");
+    input.value = "t";
+    input.type = "radio";
+    support.radioValue = input.value === "t";
+})();
+
+
+var boolHook,
+    attrHandle = jQuery.expr.attrHandle;
+
+jQuery.fn.extend({
+    attr: function (name, value) {
+        return access(this, jQuery.attr, name, value, arguments.length > 1);
+    },
+
+    removeAttr: function (name) {
+        return this.each(function () {
+            jQuery.removeAttr(this, name);
+        });
+    }
+});
+
+jQuery.extend({
+    attr: function (elem, name, value) {
+        var ret, hooks,
+            nType = elem.nodeType;
+
+        // Don't get/set attributes on text, comment and attribute nodes
+        if (nType === 3 || nType === 8 || nType === 2) {
+            return;
+        }
+
+        // Fallback to prop when attributes are not supported
+        if (typeof elem.getAttribute === "undefined") {
+            return jQuery.prop(elem, name, value);
+        }
+
+        // Attribute hooks are determined by the lowercase version
+        // Grab necessary hook if one is defined
+        if (nType !== 1 || !jQuery.isXMLDoc(elem)) {
+            hooks = jQuery.attrHooks[name.toLowerCase()] ||
+                (jQuery.expr.match.bool.test(name) ? boolHook : undefined);
+        }
+
+        if (value !== undefined) {
+            if (value === null) {
+                jQuery.removeAttr(elem, name);
+                return;
+            }
+
+            if (hooks && "set" in hooks &&
+                (ret = hooks.set(elem, value, name)) !== undefined) {
+                return ret;
+            }
+
+            elem.setAttribute(name, value + "");
+            return value;
+        }
+
+        if (hooks && "get" in hooks && (ret = hooks.get(elem, name)) !== null) {
+            return ret;
+        }
+
+        ret = jQuery.find.attr(elem, name);
+
+        // Non-existent attributes return null, we normalize to undefined
+        return ret == null ? undefined : ret;
+    },
+
+    attrHooks: {
+        type: {
+            set: function (elem, value) {
+                if (!support.radioValue && value === "radio" &&
+                    nodeName(elem, "input")) {
+                    var val = elem.value;
+                    elem.setAttribute("type", value);
+                    if (val) {
+                        elem.value = val;
+                    }
+                    return value;
+                }
+            }
+        }
+    },
+
+    removeAttr: function (elem, value) {
+        var name,
+            i = 0,
+
+            // Attribute names can contain non-HTML whitespace characters
+            // https://html.spec.whatwg.org/multipage/syntax.html#attributes-2
+            attrNames = value && value.match(rnothtmlwhite);
+
+        if (attrNames && elem.nodeType === 1) {
+            while ((name = attrNames[i++])) {
+                elem.removeAttribute(name);
+            }
+        }
+    }
+});
+
+// Hooks for boolean attributes
+boolHook = {
+    set: function (elem, value, name) {
+        if (value === false) {
+
+            // Remove boolean attributes when set to false
+            jQuery.removeAttr(elem, name);
+        } else {
+            elem.setAttribute(name, name);
+        }
+        return name;
+    }
+};
+
+jQuery.each(jQuery.expr.match.bool.source.match(/\w+/g), function (i, name) {
+    var getter = attrHandle[name] || jQuery.find.attr;
+
+    attrHandle[name] = function (elem, name, isXML) {
+        var ret, handle,
+            lowercaseName = name.toLowerCase();
+
+        if (!isXML) {
+
+            // Avoid an infinite loop by temporarily removing this function from the getter
+            handle = attrHandle[lowercaseName];
+            attrHandle[lowercaseName] = ret;
+            ret = getter(elem, name, isXML) != null ?
+                lowercaseName :
+                null;
+            attrHandle[lowercaseName] = handle;
+        }
+        return ret;
+    };
+});
+
+
+var rfocusable = /^(?:input|select|textarea|button)$/i,
+    rclickable = /^(?:a|area)$/i;
+
+jQuery.fn.extend({
+    prop: function (name, value) {
+        return access(this, jQuery.prop, name, value, arguments.length > 1);
+    },
+
+    removeProp: function (name) {
+        return this.each(function () {
+            delete this[jQuery.propFix[name] || name];
+        });
+    }
+});
+
+jQuery.extend({
+    prop: function (elem, name, value) {
+        var ret, hooks,
+            nType = elem.nodeType;
+
+        // Don't get/set properties on text, comment and attribute nodes
+        if (nType === 3 || nType === 8 || nType === 2) {
+            return;
+        }
+
+        if (nType !== 1 || !jQuery.isXMLDoc(elem)) {
+
+            // Fix name and attach hooks
+            name = jQuery.propFix[name] || name;
+            hooks = jQuery.propHooks[name];
+        }
+
+        if (value !== undefined) {
+            if (hooks && "set" in hooks &&
+                (ret = hooks.set(elem, value, name)) !== undefined) {
+                return ret;
+            }
+
+            return (elem[name] = value);
+        }
+
+        if (hooks && "get" in hooks && (ret = hooks.get(elem, name)) !== null) {
+            return ret;
+        }
+
+        return elem[name];
+    },
+
+    propHooks: {
+        tabIndex: {
+            get: function (elem) {
+
+                // Support: IE <=9 - 11 only
+                // elem.tabIndex doesn't always return the
+                // correct value when it hasn't been explicitly set
+                // https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
+                // Use proper attribute retrieval(#12072)
+                var tabindex = jQuery.find.attr(elem, "tabindex");
+
+                if (tabindex) {
+                    return parseInt(tabindex, 10);
+                }
+
+                if (
+                    rfocusable.test(elem.nodeName) ||
+                    rclickable.test(elem.nodeName) &&
+                    elem.href
+                ) {
+                    return 0;
+                }
+
+                return -1;
+            }
+        }
+    },
+
+    propFix: {
+        "for": "htmlFor",
+        "class": "className"
+    }
+});
+
+// Support: IE <=11 only
+// Accessing the selectedIndex property
+// forces the browser to respect setting selected
+// on the option
+// The getter ensures a default option is selected
+// when in an optgroup
+// eslint rule "no-unused-expressions" is disabled for this code
+// since it considers such accessions noop
+if (!support.optSelected) {
+    jQuery.propHooks.selected = {
+        get: function (elem) {
+
+            /* eslint no-unused-expressions: "off" */
+
+            var parent = elem.parentNode;
+            if (parent && parent.parentNode) {
+                parent.parentNode.selectedIndex;
+            }
+            return null;
+        },
+        set: function (elem) {
+
+            /* eslint no-unused-expressions: "off" */
+
+            var parent = elem.parentNode;
+            if (parent) {
+                parent.selectedIndex;
+
+                if (parent.parentNode) {
+                    parent.parentNode.selectedIndex;
+                }
+            }
+        }
+    };
+}
+
+jQuery.each([
+    "tabIndex",
+    "readOnly",
+    "maxLength",
+    "cellSpacing",
+    "cellPadding",
+    "rowSpan",
+    "colSpan",
+    "useMap",
+    "frameBorder",
+    "contentEditable"
+], function () {
+    jQuery.propFix[this.toLowerCase()] = this;
+});
+
+
+// Strip and collapse whitespace according to HTML spec
+// https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace
+function stripAndCollapse(value) {
+    var tokens = value.match(rnothtmlwhite) || [];
+    return tokens.join(" ");
+}
+
+
+function getClass(elem) {
+    return elem.getAttribute && elem.getAttribute("class") || "";
+}
+
+function classesToArray(value) {
+    if (Array.isArray(value)) {
+        return value;
+    }
+    if (typeof value === "string") {
+        return value.match(rnothtmlwhite) || [];
+    }
+    return [];
+}
+
+jQuery.fn.extend({
+    addClass: function (value) {
+        var classes, elem, cur, curValue, clazz, j, finalValue,
+            i = 0;
+
+        if (isFunction(value)) {
+            return this.each(function (j) {
+                jQuery(this).addClass(value.call(this, j, getClass(this)));
+            });
+        }
+
+        classes = classesToArray(value);
+
+        if (classes.length) {
+            while ((elem = this[i++])) {
+                curValue = getClass(elem);
+                cur = elem.nodeType === 1 && (" " + stripAndCollapse(curValue) + " ");
+
+                if (cur) {
+                    j = 0;
+                    while ((clazz = classes[j++])) {
+                        if (cur.indexOf(" " + clazz + " ") < 0) {
+                            cur += clazz + " ";
+                        }
+                    }
+
+                    // Only assign if different to avoid unneeded rendering.
+                    finalValue = stripAndCollapse(cur);
+                    if (curValue !== finalValue) {
+                        elem.setAttribute("class", finalValue);
+                    }
+                }
+            }
+        }
+
+        return this;
+    },
+
+    removeClass: function (value) {
+        var classes, elem, cur, curValue, clazz, j, finalValue,
+            i = 0;
+
+        if (isFunction(value)) {
+            return this.each(function (j) {
+                jQuery(this).removeClass(value.call(this, j, getClass(this)));
+            });
+        }
+
+        if (!arguments.length) {
+            return this.attr("class", "");
+        }
+
+        classes = classesToArray(value);
+
+        if (classes.length) {
+            while ((elem = this[i++])) {
+                curValue = getClass(elem);
+
+                // This expression is here for better compressibility (see addClass)
+                cur = elem.nodeType === 1 && (" " + stripAndCollapse(curValue) + " ");
+
+                if (cur) {
+                    j = 0;
+                    while ((clazz = classes[j++])) {
+
+                        // Remove *all* instances
+                        while (cur.indexOf(" " + clazz + " ") > -1) {
+                            cur = cur.replace(" " + clazz + " ", " ");
+                        }
+                    }
+
+                    // Only assign if different to avoid unneeded rendering.
+                    finalValue = stripAndCollapse(cur);
+                    if (curValue !== finalValue) {
+                        elem.setAttribute("class", finalValue);
+                    }
+                }
+            }
+        }
+
+        return this;
+    },
+
+    toggleClass: function (value, stateVal) {
+        var type = typeof value,
+            isValidValue = type === "string" || Array.isArray(value);
+
+        if (typeof stateVal === "boolean" && isValidValue) {
+            return stateVal ? this.addClass(value) : this.removeClass(value);
+        }
+
+        if (isFunction(value)) {
+            return this.each(function (i) {
+                jQuery(this).toggleClass(
+                    value.call(this, i, getClass(this), stateVal),
+                    stateVal
+                );
+            });
+        }
+
+        return this.each(function () {
+            var className, i, self, classNames;
+
+            if (isValidValue) {
+
+                // Toggle individual class names
+                i = 0;
+                self = jQuery(this);
+                classNames = classesToArray(value);
+
+                while ((className = classNames[i++])) {
+
+                    // Check each className given, space separated list
+                    if (self.hasClass(className)) {
+                        self.removeClass(className);
+                    } else {
+                        self.addClass(className);
+                    }
+                }
+
+                // Toggle whole class name
+            } else if (value === undefined || type === "boolean") {
+                className = getClass(this);
+                if (className) {
+
+                    // Store className if set
+                    dataPriv.set(this, "__className__", className);
+                }
+
+                // If the element has a class name or if we're passed `false`,
+                // then remove the whole classname (if there was one, the above saved it).
+                // Otherwise bring back whatever was previously saved (if anything),
+                // falling back to the empty string if nothing was stored.
+                if (this.setAttribute) {
+                    this.setAttribute("class",
+                        className || value === false ?
+                            "" :
+                            dataPriv.get(this, "__className__") || ""
+                    );
+                }
+            }
+        });
+    },
+
+    hasClass: function (selector) {
+        var className, elem,
+            i = 0;
+
+        className = " " + selector + " ";
+        while ((elem = this[i++])) {
+            if (elem.nodeType === 1 &&
+                (" " + stripAndCollapse(getClass(elem)) + " ").indexOf(className) > -1) {
+                return true;
+            }
+        }
+
+        return false;
+    }
+});
+
+
+var rreturn = /\r/g;
+
+jQuery.fn.extend({
+    val: function (value) {
+        var hooks, ret, valueIsFunction,
+            elem = this[0];
+
+        if (!arguments.length) {
+            if (elem) {
+                hooks = jQuery.valHooks[elem.type] ||
+                    jQuery.valHooks[elem.nodeName.toLowerCase()];
+
+                if (hooks &&
+                    "get" in hooks &&
+                    (ret = hooks.get(elem, "value")) !== undefined
+                ) {
+                    return ret;
+                }
+
+                ret = elem.value;
+
+                // Handle most common string cases
+                if (typeof ret === "string") {
+                    return ret.replace(rreturn, "");
+                }
+
+                // Handle cases where value is null/undef or number
+                return ret == null ? "" : ret;
+            }
+
+            return;
+        }
+
+        valueIsFunction = isFunction(value);
+
+        return this.each(function (i) {
+            var val;
+
+            if (this.nodeType !== 1) {
+                return;
+            }
+
+            if (valueIsFunction) {
+                val = value.call(this, i, jQuery(this).val());
+            } else {
+                val = value;
+            }
+
+            // Treat null/undefined as ""; convert numbers to string
+            if (val == null) {
+                val = "";
+
+            } else if (typeof val === "number") {
+                val += "";
+
+            } else if (Array.isArray(val)) {
+                val = jQuery.map(val, function (value) {
+                    return value == null ? "" : value + "";
+                });
+            }
+
+            hooks = jQuery.valHooks[this.type] || jQuery.valHooks[this.nodeName.toLowerCase()];
+
+            // If set returns undefined, fall back to normal setting
+            if (!hooks || !("set" in hooks) || hooks.set(this, val, "value") === undefined) {
+                this.value = val;
+            }
+        });
+    }
+});
+
+jQuery.extend({
+    valHooks: {
+        option: {
+            get: function (elem) {
+
+                var val = jQuery.find.attr(elem, "value");
+                return val != null ?
+                    val :
+
+                    // Support: IE <=10 - 11 only
+                    // option.text throws exceptions (#14686, #14858)
+                    // Strip and collapse whitespace
+                    // https://html.spec.whatwg.org/#strip-and-collapse-whitespace
+                    stripAndCollapse(jQuery.text(elem));
+            }
+        },
+        select: {
+            get: function (elem) {
+                var value, option, i,
+                    options = elem.options,
+                    index = elem.selectedIndex,
+                    one = elem.type === "select-one",
+                    values = one ? null : [],
+                    max = one ? index + 1 : options.length;
+
+                if (index < 0) {
+                    i = max;
+
+                } else {
+                    i = one ? index : 0;
+                }
+
+                // Loop through all the selected options
+                for (; i < max; i++) {
+                    option = options[i];
+
+                    // Support: IE <=9 only
+                    // IE8-9 doesn't update selected after form reset (#2551)
+                    if ((option.selected || i === index) &&
+
+                        // Don't return options that are disabled or in a disabled optgroup
+                        !option.disabled &&
+                        (!option.parentNode.disabled ||
+                            !nodeName(option.parentNode, "optgroup"))) {
+
+                        // Get the specific value for the option
+                        value = jQuery(option).val();
+
+                        // We don't need an array for one selects
+                        if (one) {
+                            return value;
+                        }
+
+                        // Multi-Selects return an array
+                        values.push(value);
+                    }
+                }
+
+                return values;
+            },
+
+            set: function (elem, value) {
+                var optionSet, option,
+                    options = elem.options,
+                    values = jQuery.makeArray(value),
+                    i = options.length;
+
+                while (i--) {
+                    option = options[i];
+
+                    /* eslint-disable no-cond-assign */
+
+                    if (option.selected =
+                        jQuery.inArray(jQuery.valHooks.option.get(option), values) > -1
+                    ) {
+                        optionSet = true;
+                    }
+
+                    /* eslint-enable no-cond-assign */
+                }
+
+                // Force browsers to behave consistently when non-matching value is set
+                if (!optionSet) {
+                    elem.selectedIndex = -1;
+                }
+                return values;
+            }
+        }
+    }
+});
+
+// Radios and checkboxes getter/setter
+jQuery.each(["radio", "checkbox"], function () {
+    jQuery.valHooks[this] = {
+        set: function (elem, value) {
+            if (Array.isArray(value)) {
+                return (elem.checked = jQuery.inArray(jQuery(elem).val(), value) > -1);
+            }
+        }
+    };
+    if (!support.checkOn) {
+        jQuery.valHooks[this].get = function (elem) {
+            return elem.getAttribute("value") === null ? "on" : elem.value;
+        };
+    }
+});
+
+
+// Return jQuery for attributes-only inclusion
+
+
+support.focusin = "onfocusin" in window;
+
+
+var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,
+    stopPropagationCallback = function (e) {
+        e.stopPropagation();
+    };
+
+jQuery.extend(jQuery.event, {
+
+    trigger: function (event, data, elem, onlyHandlers) {
+
+        var i, cur, tmp, bubbleType, ontype, handle, special, lastElement,
+            eventPath = [elem || document$1],
+            type = hasOwn.call(event, "type") ? event.type : event,
+            namespaces = hasOwn.call(event, "namespace") ? event.namespace.split(".") : [];
+
+        cur = lastElement = tmp = elem = elem || document$1;
+
+        // Don't do events on text and comment nodes
+        if (elem.nodeType === 3 || elem.nodeType === 8) {
+            return;
+        }
+
+        // focus/blur morphs to focusin/out; ensure we're not firing them right now
+        if (rfocusMorph.test(type + jQuery.event.triggered)) {
+            return;
+        }
+
+        if (type.indexOf(".") > -1) {
+
+            // Namespaced trigger; create a regexp to match event type in handle()
+            namespaces = type.split(".");
+            type = namespaces.shift();
+            namespaces.sort();
+        }
+        ontype = type.indexOf(":") < 0 && "on" + type;
+
+        // Caller can pass in a jQuery.Event object, Object, or just an event type string
+        event = event[jQuery.expando] ?
+            event :
+            new jQuery.Event(type, typeof event === "object" && event);
+
+        // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)
+        event.isTrigger = onlyHandlers ? 2 : 3;
+        event.namespace = namespaces.join(".");
+        event.rnamespace = event.namespace ?
+            new RegExp("(^|\\.)" + namespaces.join("\\.(?:.*\\.|)") + "(\\.|$)") :
+            null;
+
+        // Clean up the event in case it is being reused
+        event.result = undefined;
+        if (!event.target) {
+            event.target = elem;
+        }
+
+        // Clone any incoming data and prepend the event, creating the handler arg list
+        data = data == null ?
+            [event] :
+            jQuery.makeArray(data, [event]);
+
+        // Allow special events to draw outside the lines
+        special = jQuery.event.special[type] || {};
+        if (!onlyHandlers && special.trigger && special.trigger.apply(elem, data) === false) {
+            return;
+        }
+
+        // Determine event propagation path in advance, per W3C events spec (#9951)
+        // Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
+        if (!onlyHandlers && !special.noBubble && !isWindow(elem)) {
+
+            bubbleType = special.delegateType || type;
+            if (!rfocusMorph.test(bubbleType + type)) {
+                cur = cur.parentNode;
+            }
+            for (; cur; cur = cur.parentNode) {
+                eventPath.push(cur);
+                tmp = cur;
+            }
+
+            // Only add window if we got to document (e.g., not plain obj or detached DOM)
+            if (tmp === (elem.ownerDocument || document$1)) {
+                eventPath.push(tmp.defaultView || tmp.parentWindow || window);
+            }
+        }
+
+        // Fire handlers on the event path
+        i = 0;
+        while ((cur = eventPath[i++]) && !event.isPropagationStopped()) {
+            lastElement = cur;
+            event.type = i > 1 ?
+                bubbleType :
+                special.bindType || type;
+
+            // jQuery handler
+            handle = (dataPriv.get(cur, "events") || {})[event.type] &&
+                dataPriv.get(cur, "handle");
+            if (handle) {
+                handle.apply(cur, data);
+            }
+
+            // Native handler
+            handle = ontype && cur[ontype];
+            if (handle && handle.apply && acceptData(cur)) {
+                event.result = handle.apply(cur, data);
+                if (event.result === false) {
+                    event.preventDefault();
+                }
+            }
+        }
+        event.type = type;
+
+        // If nobody prevented the default action, do it now
+        if (!onlyHandlers && !event.isDefaultPrevented()) {
+
+            if ((!special._default ||
+                special._default.apply(eventPath.pop(), data) === false) &&
+                acceptData(elem)) {
+
+                // Call a native DOM method on the target with the same name as the event.
+                // Don't do default actions on window, that's where global variables be (#6170)
+                if (ontype && isFunction(elem[type]) && !isWindow(elem)) {
+
+                    // Don't re-trigger an onFOO event when we call its FOO() method
+                    tmp = elem[ontype];
+
+                    if (tmp) {
+                        elem[ontype] = null;
+                    }
+
+                    // Prevent re-triggering of the same event, since we already bubbled it above
+                    jQuery.event.triggered = type;
+
+                    if (event.isPropagationStopped()) {
+                        lastElement.addEventListener(type, stopPropagationCallback);
+                    }
+
+                    elem[type]();
+
+                    if (event.isPropagationStopped()) {
+                        lastElement.removeEventListener(type, stopPropagationCallback);
+                    }
+
+                    jQuery.event.triggered = undefined;
+
+                    if (tmp) {
+                        elem[ontype] = tmp;
+                    }
+                }
+            }
+        }
+
+        return event.result;
+    },
+
+    // Piggyback on a donor event to simulate a different one
+    // Used only for `focus(in | out)` events
+    simulate: function (type, elem, event) {
+        var e = jQuery.extend(
+            new jQuery.Event(),
+            event,
+            {
+                type: type,
+                isSimulated: true
+            }
+        );
+
+        jQuery.event.trigger(e, null, elem);
+    }
+
+});
+
+jQuery.fn.extend({
+
+    trigger: function (type, data) {
+        return this.each(function () {
+            jQuery.event.trigger(type, data, this);
+        });
+    },
+    triggerHandler: function (type, data) {
+        var elem = this[0];
+        if (elem) {
+            return jQuery.event.trigger(type, data, elem, true);
+        }
+    }
+});
+
+
+// Support: Firefox <=44
+// Firefox doesn't have focus(in | out) events
+// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787
+//
+// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1
+// focus(in | out) events fire after focus & blur events,
+// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order
+// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857
+if (!support.focusin) {
+    jQuery.each({focus: "focusin", blur: "focusout"}, function (orig, fix) {
+
+        // Attach a single capturing handler on the document while someone wants focusin/focusout
+        var handler = function (event) {
+            jQuery.event.simulate(fix, event.target, jQuery.event.fix(event));
+        };
+
+        jQuery.event.special[fix] = {
+            setup: function () {
+                var doc = this.ownerDocument || this,
+                    attaches = dataPriv.access(doc, fix);
+
+                if (!attaches) {
+                    doc.addEventListener(orig, handler, true);
+                }
+                dataPriv.access(doc, fix, (attaches || 0) + 1);
+            },
+            teardown: function () {
+                var doc = this.ownerDocument || this,
+                    attaches = dataPriv.access(doc, fix) - 1;
+
+                if (!attaches) {
+                    doc.removeEventListener(orig, handler, true);
+                    dataPriv.remove(doc, fix);
+
+                } else {
+                    dataPriv.access(doc, fix, attaches);
+                }
+            }
+        };
+    });
+}
+
+
+var
+    rbracket = /\[\]$/,
+    rCRLF = /\r?\n/g,
+    rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,
+    rsubmittable = /^(?:input|select|textarea|keygen)/i;
+
+function buildParams(prefix, obj, traditional, add) {
+    var name;
+
+    if (Array.isArray(obj)) {
+
+        // Serialize array item.
+        jQuery.each(obj, function (i, v) {
+            if (traditional || rbracket.test(prefix)) {
+
+                // Treat each array item as a scalar.
+                add(prefix, v);
+
+            } else {
+
+                // Item is non-scalar (array or object), encode its numeric index.
+                buildParams(
+                    prefix + "[" + (typeof v === "object" && v != null ? i : "") + "]",
+                    v,
+                    traditional,
+                    add
+                );
+            }
+        });
+
+    } else if (!traditional && toType(obj) === "object") {
+
+        // Serialize object item.
+        for (name in obj) {
+            buildParams(prefix + "[" + name + "]", obj[name], traditional, add);
+        }
+
+    } else {
+
+        // Serialize scalar item.
+        add(prefix, obj);
+    }
+}
+
+// Serialize an array of form elements or a set of
+// key/values into a query string
+jQuery.param = function (a, traditional) {
+    var prefix,
+        s = [],
+        add = function (key, valueOrFunction) {
+
+            // If value is a function, invoke it and use its return value
+            var value = isFunction(valueOrFunction) ?
+                valueOrFunction() :
+                valueOrFunction;
+
+            s[s.length] = encodeURIComponent(key) + "=" +
+                encodeURIComponent(value == null ? "" : value);
+        };
+
+    // If an array was passed in, assume that it is an array of form elements.
+    if (Array.isArray(a) || (a.jquery && !jQuery.isPlainObject(a))) {
+
+        // Serialize the form elements
+        jQuery.each(a, function () {
+            add(this.name, this.value);
+        });
+
+    } else {
+
+        // If traditional, encode the "old" way (the way 1.3.2 or older
+        // did it), otherwise encode params recursively.
+        for (prefix in a) {
+            buildParams(prefix, a[prefix], traditional, add);
+        }
+    }
+
+    // Return the resulting serialization
+    return s.join("&");
+};
+
+jQuery.fn.extend({
+    serialize: function () {
+        return jQuery.param(this.serializeArray());
+    },
+    serializeArray: function () {
+        return this.map(function () {
+
+            // Can add propHook for "elements" to filter or add form elements
+            var elements = jQuery.prop(this, "elements");
+            return elements ? jQuery.makeArray(elements) : this;
+        })
+            .filter(function () {
+                var type = this.type;
+
+                // Use .is( ":disabled" ) so that fieldset[disabled] works
+                return this.name && !jQuery(this).is(":disabled") &&
+                    rsubmittable.test(this.nodeName) && !rsubmitterTypes.test(type) &&
+                    (this.checked || !rcheckableType.test(type));
+            })
+            .map(function (i, elem) {
+                var val = jQuery(this).val();
+
+                if (val == null) {
+                    return null;
+                }
+
+                if (Array.isArray(val)) {
+                    return jQuery.map(val, function (val) {
+                        return {name: elem.name, value: val.replace(rCRLF, "\r\n")};
+                    });
+                }
+
+                return {name: elem.name, value: val.replace(rCRLF, "\r\n")};
+            }).get();
+    }
+});
+
+
+jQuery.fn.extend({
+    wrapAll: function (html) {
+        var wrap;
+
+        if (this[0]) {
+            if (isFunction(html)) {
+                html = html.call(this[0]);
+            }
+
+            // The elements to wrap the target around
+            wrap = jQuery(html, this[0].ownerDocument).eq(0).clone(true);
+
+            if (this[0].parentNode) {
+                wrap.insertBefore(this[0]);
+            }
+
+            wrap.map(function () {
+                var elem = this;
+
+                while (elem.firstElementChild) {
+                    elem = elem.firstElementChild;
+                }
+
+                return elem;
+            }).append(this);
+        }
+
+        return this;
+    },
+
+    wrapInner: function (html) {
+        if (isFunction(html)) {
+            return this.each(function (i) {
+                jQuery(this).wrapInner(html.call(this, i));
+            });
+        }
+
+        return this.each(function () {
+            var self = jQuery(this),
+                contents = self.contents();
+
+            if (contents.length) {
+                contents.wrapAll(html);
+
+            } else {
+                self.append(html);
+            }
+        });
+    },
+
+    wrap: function (html) {
+        var htmlIsFunction = isFunction(html);
+
+        return this.each(function (i) {
+            jQuery(this).wrapAll(htmlIsFunction ? html.call(this, i) : html);
+        });
+    },
+
+    unwrap: function (selector) {
+        this.parent(selector).not("body").each(function () {
+            jQuery(this).replaceWith(this.childNodes);
+        });
+        return this;
+    }
+});
+
+
+jQuery.expr.pseudos.hidden = function (elem) {
+    return !jQuery.expr.pseudos.visible(elem);
+};
+jQuery.expr.pseudos.visible = function (elem) {
+    return !!(elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length);
+};
+
+
+// Support: Safari 8 only
+// In Safari 8 documents created via document.implementation.createHTMLDocument
+// collapse sibling forms: the second one becomes a child of the first one.
+// Because of that, this security measure has to be disabled in Safari 8.
+// https://bugs.webkit.org/show_bug.cgi?id=137337
+support.createHTMLDocument = (function () {
+    var body = document$1.implementation.createHTMLDocument("").body;
+    body.innerHTML = "<form></form><form></form>";
+    return body.childNodes.length === 2;
+})();
+
+
+// Argument "data" should be string of html
+// context (optional): If specified, the fragment will be created in this context,
+// defaults to document
+// keepScripts (optional): If true, will include scripts passed in the html string
+jQuery.parseHTML = function (data, context, keepScripts) {
+    if (typeof data !== "string") {
+        return [];
+    }
+    if (typeof context === "boolean") {
+        keepScripts = context;
+        context = false;
+    }
+
+    var base, parsed, scripts;
+
+    if (!context) {
+
+        // Stop scripts or inline event handlers from being executed immediately
+        // by using document.implementation
+        if (support.createHTMLDocument) {
+            context = document$1.implementation.createHTMLDocument("");
+
+            // Set the base href for the created document
+            // so any parsed elements with URLs
+            // are based on the document's URL (gh-2965)
+            base = context.createElement("base");
+            base.href = document$1.location.href;
+            context.head.appendChild(base);
+        } else {
+            context = document$1;
+        }
+    }
+
+    parsed = rsingleTag.exec(data);
+    scripts = !keepScripts && [];
+
+    // Single tag
+    if (parsed) {
+        return [context.createElement(parsed[1])];
+    }
+
+    parsed = buildFragment([data], context, scripts);
+
+    if (scripts && scripts.length) {
+        jQuery(scripts).remove();
+    }
+
+    return jQuery.merge([], parsed.childNodes);
+};
+
+
+jQuery.offset = {
+    setOffset: function (elem, options, i) {
+        var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,
+            position = jQuery.css(elem, "position"),
+            curElem = jQuery(elem),
+            props = {};
+
+        // Set position first, in-case top/left are set even on static elem
+        if (position === "static") {
+            elem.style.position = "relative";
+        }
+
+        curOffset = curElem.offset();
+        curCSSTop = jQuery.css(elem, "top");
+        curCSSLeft = jQuery.css(elem, "left");
+        calculatePosition = (position === "absolute" || position === "fixed") &&
+            (curCSSTop + curCSSLeft).indexOf("auto") > -1;
+
+        // Need to be able to calculate position if either
+        // top or left is auto and position is either absolute or fixed
+        if (calculatePosition) {
+            curPosition = curElem.position();
+            curTop = curPosition.top;
+            curLeft = curPosition.left;
+
+        } else {
+            curTop = parseFloat(curCSSTop) || 0;
+            curLeft = parseFloat(curCSSLeft) || 0;
+        }
+
+        if (isFunction(options)) {
+
+            // Use jQuery.extend here to allow modification of coordinates argument (gh-1848)
+            options = options.call(elem, i, jQuery.extend({}, curOffset));
+        }
+
+        if (options.top != null) {
+            props.top = (options.top - curOffset.top) + curTop;
+        }
+        if (options.left != null) {
+            props.left = (options.left - curOffset.left) + curLeft;
+        }
+
+        if ("using" in options) {
+            options.using.call(elem, props);
+
+        } else {
+            curElem.css(props);
+        }
+    }
+};
+
+jQuery.fn.extend({
+
+    // offset() relates an element's border box to the document origin
+    offset: function (options) {
+
+        // Preserve chaining for setter
+        if (arguments.length) {
+            return options === undefined ?
+                this :
+                this.each(function (i) {
+                    jQuery.offset.setOffset(this, options, i);
+                });
+        }
+
+        var rect, win,
+            elem = this[0];
+
+        if (!elem) {
+            return;
+        }
+
+        // Return zeros for disconnected and hidden (display: none) elements (gh-2310)
+        // Support: IE <=11 only
+        // Running getBoundingClientRect on a
+        // disconnected node in IE throws an error
+        if (!elem.getClientRects().length) {
+            return {top: 0, left: 0};
+        }
+
+        // Get document-relative position by adding viewport scroll to viewport-relative gBCR
+        rect = elem.getBoundingClientRect();
+        win = elem.ownerDocument.defaultView;
+        return {
+            top: rect.top + win.pageYOffset,
+            left: rect.left + win.pageXOffset
+        };
+    },
+
+    // position() relates an element's margin box to its offset parent's padding box
+    // This corresponds to the behavior of CSS absolute positioning
+    position: function () {
+        if (!this[0]) {
+            return;
+        }
+
+        var offsetParent, offset, doc,
+            elem = this[0],
+            parentOffset = {top: 0, left: 0};
+
+        // position:fixed elements are offset from the viewport, which itself always has zero offset
+        if (jQuery.css(elem, "position") === "fixed") {
+
+            // Assume position:fixed implies availability of getBoundingClientRect
+            offset = elem.getBoundingClientRect();
+
+        } else {
+            offset = this.offset();
+
+            // Account for the *real* offset parent, which can be the document or its root element
+            // when a statically positioned element is identified
+            doc = elem.ownerDocument;
+            offsetParent = elem.offsetParent || doc.documentElement;
+            while (offsetParent &&
+            (offsetParent === doc.body || offsetParent === doc.documentElement) &&
+            jQuery.css(offsetParent, "position") === "static") {
+
+                offsetParent = offsetParent.parentNode;
+            }
+            if (offsetParent && offsetParent !== elem && offsetParent.nodeType === 1) {
+
+                // Incorporate borders into its offset, since they are outside its content origin
+                parentOffset = jQuery(offsetParent).offset();
+                parentOffset.top += jQuery.css(offsetParent, "borderTopWidth", true);
+                parentOffset.left += jQuery.css(offsetParent, "borderLeftWidth", true);
+            }
+        }
+
+        // Subtract parent offsets and element margins
+        return {
+            top: offset.top - parentOffset.top - jQuery.css(elem, "marginTop", true),
+            left: offset.left - parentOffset.left - jQuery.css(elem, "marginLeft", true)
+        };
+    },
+
+    // This method will return documentElement in the following cases:
+    // 1) For the element inside the iframe without offsetParent, this method will return
+    //    documentElement of the parent window
+    // 2) For the hidden or detached element
+    // 3) For body or html element, i.e. in case of the html node - it will return itself
+    //
+    // but those exceptions were never presented as a real life use-cases
+    // and might be considered as more preferable results.
+    //
+    // This logic, however, is not guaranteed and can change at any point in the future
+    offsetParent: function () {
+        return this.map(function () {
+            var offsetParent = this.offsetParent;
+
+            while (offsetParent && jQuery.css(offsetParent, "position") === "static") {
+                offsetParent = offsetParent.offsetParent;
+            }
+
+            return offsetParent || documentElement;
+        });
+    }
+});
+
+// Create scrollLeft and scrollTop methods
+jQuery.each({scrollLeft: "pageXOffset", scrollTop: "pageYOffset"}, function (method, prop) {
+    var top = "pageYOffset" === prop;
+
+    jQuery.fn[method] = function (val) {
+        return access(this, function (elem, method, val) {
+
+            // Coalesce documents and windows
+            var win;
+            if (isWindow(elem)) {
+                win = elem;
+            } else if (elem.nodeType === 9) {
+                win = elem.defaultView;
+            }
+
+            if (val === undefined) {
+                return win ? win[prop] : elem[method];
+            }
+
+            if (win) {
+                win.scrollTo(
+                    !top ? val : win.pageXOffset,
+                    top ? val : win.pageYOffset
+                );
+
+            } else {
+                elem[method] = val;
+            }
+        }, method, val, arguments.length);
+    };
+});
+
+// Support: Safari <=7 - 9.1, Chrome <=37 - 49
+// Add the top/left cssHooks using jQuery.fn.position
+// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
+// Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=589347
+// getComputedStyle returns percent when specified for top/left/bottom/right;
+// rather than make the css module depend on the offset module, just check for it here
+jQuery.each(["top", "left"], function (i, prop) {
+    jQuery.cssHooks[prop] = addGetHookIf(support.pixelPosition,
+        function (elem, computed) {
+            if (computed) {
+                computed = curCSS(elem, prop);
+
+                // If curCSS returns percentage, fallback to offset
+                return rnumnonpx.test(computed) ?
+                    jQuery(elem).position()[prop] + "px" :
+                    computed;
+            }
+        }
+    );
+});
+
+
+// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
+jQuery.each({Height: "height", Width: "width"}, function (name, type) {
+    jQuery.each({padding: "inner" + name, content: type, "": "outer" + name},
+        function (defaultExtra, funcName) {
+
+            // Margin is only for outerHeight, outerWidth
+            jQuery.fn[funcName] = function (margin, value) {
+                var chainable = arguments.length && (defaultExtra || typeof margin !== "boolean"),
+                    extra = defaultExtra || (margin === true || value === true ? "margin" : "border");
+
+                return access(this, function (elem, type, value) {
+                    var doc;
+
+                    if (isWindow(elem)) {
+
+                        // $( window ).outerWidth/Height return w/h including scrollbars (gh-1729)
+                        return funcName.indexOf("outer") === 0 ?
+                            elem["inner" + name] :
+                            elem.document.documentElement["client" + name];
+                    }
+
+                    // Get document width or height
+                    if (elem.nodeType === 9) {
+                        doc = elem.documentElement;
+
+                        // Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],
+                        // whichever is greatest
+                        return Math.max(
+                            elem.body["scroll" + name], doc["scroll" + name],
+                            elem.body["offset" + name], doc["offset" + name],
+                            doc["client" + name]
+                        );
+                    }
+
+                    return value === undefined ?
+
+                        // Get width or height on the element, requesting but not forcing parseFloat
+                        jQuery.css(elem, type, extra) :
+
+                        // Set width or height on the element
+                        jQuery.style(elem, type, value, extra);
+                }, type, chainable ? margin : undefined, chainable);
+            };
+        });
+});
+
+
+jQuery.each(("blur focus focusin focusout resize scroll click dblclick " +
+    "mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
+    "change select submit keydown keypress keyup contextmenu").split(" "),
+    function (i, name) {
+
+        // Handle event binding
+        jQuery.fn[name] = function (data, fn) {
+            return arguments.length > 0 ?
+                this.on(name, null, data, fn) :
+                this.trigger(name);
+        };
+    });
+
+jQuery.fn.extend({
+    hover: function (fnOver, fnOut) {
+        return this.mouseenter(fnOver).mouseleave(fnOut || fnOver);
+    }
+});
+
+
+jQuery.fn.extend({
+
+    bind: function (types, data, fn) {
+        return this.on(types, null, data, fn);
+    },
+    unbind: function (types, fn) {
+        return this.off(types, null, fn);
+    },
+
+    delegate: function (selector, types, data, fn) {
+        return this.on(types, selector, data, fn);
+    },
+    undelegate: function (selector, types, fn) {
+
+        // ( namespace ) or ( selector, types [, fn] )
+        return arguments.length === 1 ?
+            this.off(selector, "**") :
+            this.off(types, selector || "**", fn);
+    }
+});
+
+// Bind a function to a context, optionally partially applying any
+// arguments.
+// jQuery.proxy is deprecated to promote standards (specifically Function#bind)
+// However, it is not slated for removal any time soon
+jQuery.proxy = function (fn, context) {
+    var tmp, args, proxy;
+
+    if (typeof context === "string") {
+        tmp = fn[context];
+        context = fn;
+        fn = tmp;
+    }
+
+    // Quick check to determine if target is callable, in the spec
+    // this throws a TypeError, but we will just return undefined.
+    if (!isFunction(fn)) {
+        return undefined;
+    }
+
+    // Simulated bind
+    args = slice.call(arguments, 2);
+    proxy = function () {
+        return fn.apply(context || this, args.concat(slice.call(arguments)));
+    };
+
+    // Set the guid of unique handler to the same of original handler, so it can be removed
+    proxy.guid = fn.guid = fn.guid || jQuery.guid++;
+
+    return proxy;
+};
+
+jQuery.holdReady = function (hold) {
+    if (hold) {
+        jQuery.readyWait++;
+    } else {
+        jQuery.ready(true);
+    }
+};
+jQuery.isArray = Array.isArray;
+jQuery.parseJSON = JSON.parse;
+jQuery.nodeName = nodeName;
+jQuery.isFunction = isFunction;
+jQuery.isWindow = isWindow;
+jQuery.camelCase = camelCase;
+jQuery.type = toType;
+
+jQuery.now = Date.now;
+
+jQuery.isNumeric = function (obj) {
+
+    // As of jQuery 3.0, isNumeric is limited to
+    // strings and numbers (primitives or objects)
+    // that can be coerced to finite numbers (gh-2662)
+    var type = jQuery.type(obj);
+    return (type === "number" || type === "string") &&
+
+        // parseFloat NaNs numeric-cast false positives ("")
+        // ...but misinterprets leading-number strings, particularly hex literals ("0x...")
+        // subtraction forces infinities to NaN
+        !isNaN(obj - parseFloat(obj));
+};
+
+const $$1 = jQuery;
+
+function div(options) {
+    return create$1("div", options);
+}
+
+function create$1(tag, options) {
+    const elem = document.createElement(tag);
+    if (options) {
+        if (options.class) {
+            elem.classList.add(options.class);
+        }
+        if (options.id) {
+            elem.id = options.id;
+        }
+        if(options.style) {
+            applyStyle(elem, options.style);
+        }
+    }
+    return elem;
+}
+
+function hide(elem) {
+    const cssStyle = getComputedStyle(elem);
+    if(cssStyle.display !== "none") {
+        elem._initialDisplay = cssStyle.display;
+    }
+    elem.style.display = "none";
+}
+
+function show(elem) {
+    const currentDisplay = getComputedStyle(elem).display;
+    if (currentDisplay === "none") {
+        const d = elem._initialDisplay || "block";
+        elem.style.display = d;
+    }
+}
+
+function hideAll(selector) {
+    document.querySelectorAll(selector).forEach(elem => { hide(elem); });
+}
+
+function empty(elem) {
+    while(elem.firstChild){
+        elem.removeChild(elem.firstChild);
+    }
+}
+
+function offset(elem) {
+    // Return zeros for disconnected and hidden (display: none) elements (gh-2310)
+    // Support: IE <=11 only
+    // Running getBoundingClientRect on a
+    // disconnected node in IE throws an error
+    if (!elem.getClientRects().length) {
+        return {top: 0, left: 0};
+    }
+
+    // Get document-relative position by adding viewport scroll to viewport-relative gBCR
+    const rect = elem.getBoundingClientRect();
+    const win = elem.ownerDocument.defaultView;
+    return {
+        top: rect.top + win.pageYOffset,
+        left: rect.left + win.pageXOffset
+    };
+}
+
+function pageCoordinates(e) {
+
+    if (e.type.startsWith("touch")) {
+        const touch = e.touches[0];
+        return {x: touch.pageX, y: touch.pageY};
+    } else {
+        return {x: e.pageX, y: e.pageY}
+    }
+}
+
+const relativeDOMBBox = (parentElement, childElement) => {
+    const { x: x_p, y: y_p, width: width_p, height: height_p } = parentElement.getBoundingClientRect();
+    const { x: x_c, y: y_c, width: width_c, height: height_c } = childElement.getBoundingClientRect();
+    return { x: (x_c - x_p), y: (y_c - y_p), width: width_c, height:height_c };
+};
+
+function applyStyle(elem, style) {
+    for (let key of Object.keys(style)) {
+        elem.style[key] = style[key];
+    }
+}
+
+function guid$2  () {
+    return ("0000" + (Math.random() * Math.pow(36, 4) << 0).toString(36)).slice(-4);
+}
+
+let getMouseXY = (domElement, { clientX, clientY }) => {
+
+    // DOMRect object with eight properties: left, top, right, bottom, x, y, width, height
+    const { left, top, width, height } = domElement.getBoundingClientRect();
+
+    const x = clientX - left;
+    const y = clientY - top;
+    return { x, y, xNormalized: x/width, yNormalized: y/height, width, height };
+
+};
+
+/**
+ * Translate the mouse coordinates for the event to the coordinates for the given target element
+ * @param event
+ * @param domElement
+ * @returns {{x: number, y: number}}
+ */
+function translateMouseCoordinates(event, domElement) {
+
+    const { clientX, clientY } = event;
+    return getMouseXY(domElement, { clientX, clientY });
+
+}
+
+var domUtils = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    applyStyle: applyStyle,
+    create: create$1,
+    div: div,
+    empty: empty,
+    guid: guid$2,
+    hide: hide,
+    hideAll: hideAll,
+    offset: offset,
+    pageCoordinates: pageCoordinates,
+    relativeDOMBBox: relativeDOMBBox,
+    show: show,
+    translateMouseCoordinates: translateMouseCoordinates
+});
+
+/*! @license DOMPurify 3.0.5 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.0.5/LICENSE */
+
+const {
+  entries,
+  setPrototypeOf,
+  isFrozen,
+  getPrototypeOf,
+  getOwnPropertyDescriptor
+} = Object;
+let {
+  freeze,
+  seal,
+  create
+} = Object; // eslint-disable-line import/no-mutable-exports
+
+let {
+  apply,
+  construct
+} = typeof Reflect !== 'undefined' && Reflect;
+
+if (!apply) {
+  apply = function apply(fun, thisValue, args) {
+    return fun.apply(thisValue, args);
+  };
+}
+
+if (!freeze) {
+  freeze = function freeze(x) {
+    return x;
+  };
+}
+
+if (!seal) {
+  seal = function seal(x) {
+    return x;
+  };
+}
+
+if (!construct) {
+  construct = function construct(Func, args) {
+    return new Func(...args);
+  };
+}
+
+const arrayForEach = unapply(Array.prototype.forEach);
+const arrayPop = unapply(Array.prototype.pop);
+const arrayPush = unapply(Array.prototype.push);
+const stringToLowerCase = unapply(String.prototype.toLowerCase);
+const stringToString = unapply(String.prototype.toString);
+const stringMatch = unapply(String.prototype.match);
+const stringReplace = unapply(String.prototype.replace);
+const stringIndexOf = unapply(String.prototype.indexOf);
+const stringTrim = unapply(String.prototype.trim);
+const regExpTest = unapply(RegExp.prototype.test);
+const typeErrorCreate = unconstruct(TypeError);
+function unapply(func) {
+  return function (thisArg) {
+    for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+      args[_key - 1] = arguments[_key];
+    }
+
+    return apply(func, thisArg, args);
+  };
+}
+function unconstruct(func) {
+  return function () {
+    for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
+      args[_key2] = arguments[_key2];
+    }
+
+    return construct(func, args);
+  };
+}
+/* Add properties to a lookup table */
+
+function addToSet(set, array, transformCaseFunc) {
+  var _transformCaseFunc;
+
+  transformCaseFunc = (_transformCaseFunc = transformCaseFunc) !== null && _transformCaseFunc !== void 0 ? _transformCaseFunc : stringToLowerCase;
+
+  if (setPrototypeOf) {
+    // Make 'in' and truthy checks like Boolean(set.constructor)
+    // independent of any properties defined on Object.prototype.
+    // Prevent prototype setters from intercepting set as a this value.
+    setPrototypeOf(set, null);
+  }
+
+  let l = array.length;
+
+  while (l--) {
+    let element = array[l];
+
+    if (typeof element === 'string') {
+      const lcElement = transformCaseFunc(element);
+
+      if (lcElement !== element) {
+        // Config presets (e.g. tags.js, attrs.js) are immutable.
+        if (!isFrozen(array)) {
+          array[l] = lcElement;
+        }
+
+        element = lcElement;
+      }
+    }
+
+    set[element] = true;
+  }
+
+  return set;
+}
+/* Shallow clone an object */
+
+function clone(object) {
+  const newObject = create(null);
+
+  for (const [property, value] of entries(object)) {
+    newObject[property] = value;
+  }
+
+  return newObject;
+}
+/* This method automatically checks if the prop is function
+ * or getter and behaves accordingly. */
+
+function lookupGetter(object, prop) {
+  while (object !== null) {
+    const desc = getOwnPropertyDescriptor(object, prop);
+
+    if (desc) {
+      if (desc.get) {
+        return unapply(desc.get);
+      }
+
+      if (typeof desc.value === 'function') {
+        return unapply(desc.value);
+      }
+    }
+
+    object = getPrototypeOf(object);
+  }
+
+  function fallbackValue(element) {
+    console.warn('fallback value for', element);
+    return null;
+  }
+
+  return fallbackValue;
+}
+
+const html$1 = freeze(['a', 'abbr', 'acronym', 'address', 'area', 'article', 'aside', 'audio', 'b', 'bdi', 'bdo', 'big', 'blink', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'center', 'cite', 'code', 'col', 'colgroup', 'content', 'data', 'datalist', 'dd', 'decorator', 'del', 'details', 'dfn', 'dialog', 'dir', 'div', 'dl', 'dt', 'element', 'em', 'fieldset', 'figcaption', 'figure', 'font', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'i', 'img', 'input', 'ins', 'kbd', 'label', 'legend', 'li', 'main', 'map', 'mark', 'marquee', 'menu', 'menuitem', 'meter', 'nav', 'nobr', 'ol', 'optgroup', 'option', 'output', 'p', 'picture', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'section', 'select', 'shadow', 'small', 'source', 'spacer', 'span', 'strike', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'time', 'tr', 'track', 'tt', 'u', 'ul', 'var', 'video', 'wbr']); // SVG
+
+const svg$1 = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'view', 'vkern']);
+const svgFilters = freeze(['feBlend', 'feColorMatrix', 'feComponentTransfer', 'feComposite', 'feConvolveMatrix', 'feDiffuseLighting', 'feDisplacementMap', 'feDistantLight', 'feDropShadow', 'feFlood', 'feFuncA', 'feFuncB', 'feFuncG', 'feFuncR', 'feGaussianBlur', 'feImage', 'feMerge', 'feMergeNode', 'feMorphology', 'feOffset', 'fePointLight', 'feSpecularLighting', 'feSpotLight', 'feTile', 'feTurbulence']); // List of SVG elements that are disallowed by default.
+// We still need to know them so that we can do namespace
+// checks properly in case one wants to add them to
+// allow-list.
+
+const svgDisallowed = freeze(['animate', 'color-profile', 'cursor', 'discard', 'font-face', 'font-face-format', 'font-face-name', 'font-face-src', 'font-face-uri', 'foreignobject', 'hatch', 'hatchpath', 'mesh', 'meshgradient', 'meshpatch', 'meshrow', 'missing-glyph', 'script', 'set', 'solidcolor', 'unknown', 'use']);
+const mathMl$1 = freeze(['math', 'menclose', 'merror', 'mfenced', 'mfrac', 'mglyph', 'mi', 'mlabeledtr', 'mmultiscripts', 'mn', 'mo', 'mover', 'mpadded', 'mphantom', 'mroot', 'mrow', 'ms', 'mspace', 'msqrt', 'mstyle', 'msub', 'msup', 'msubsup', 'mtable', 'mtd', 'mtext', 'mtr', 'munder', 'munderover', 'mprescripts']); // Similarly to SVG, we want to know all MathML elements,
+// even those that we disallow by default.
+
+const mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']);
+const text = freeze(['#text']);
+
+const html = freeze(['accept', 'action', 'align', 'alt', 'autocapitalize', 'autocomplete', 'autopictureinpicture', 'autoplay', 'background', 'bgcolor', 'border', 'capture', 'cellpadding', 'cellspacing', 'checked', 'cite', 'class', 'clear', 'color', 'cols', 'colspan', 'controls', 'controlslist', 'coords', 'crossorigin', 'datetime', 'decoding', 'default', 'dir', 'disabled', 'disablepictureinpicture', 'disableremoteplayback', 'download', 'draggable', 'enctype', 'enterkeyhint', 'face', 'for', 'headers', 'height', 'hidden', 'high', 'href', 'hreflang', 'id', 'inputmode', 'integrity', 'ismap', 'kind', 'label', 'lang', 'list', 'loading', 'loop', 'low', 'max', 'maxlength', 'media', 'method', 'min', 'minlength', 'multiple', 'muted', 'name', 'nonce', 'noshade', 'novalidate', 'nowrap', 'open', 'optimum', 'pattern', 'placeholder', 'playsinline', 'poster', 'preload', 'pubdate', 'radiogroup', 'readonly', 'rel', 'required', 'rev', 'reversed', 'role', 'rows', 'rowspan', 'spellcheck', 'scope', 'selected', 'shape', 'size', 'sizes', 'span', 'srclang', 'start', 'src', 'srcset', 'step', 'style', 'summary', 'tabindex', 'title', 'translate', 'type', 'usemap', 'valign', 'value', 'width', 'xmlns', 'slot']);
+const svg = freeze(['accent-height', 'accumulate', 'additive', 'alignment-baseline', 'ascent', 'attributename', 'attributetype', 'azimuth', 'basefrequency', 'baseline-shift', 'begin', 'bias', 'by', 'class', 'clip', 'clippathunits', 'clip-path', 'clip-rule', 'color', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'cx', 'cy', 'd', 'dx', 'dy', 'diffuseconstant', 'direction', 'display', 'divisor', 'dur', 'edgemode', 'elevation', 'end', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'filterunits', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'fx', 'fy', 'g1', 'g2', 'glyph-name', 'glyphref', 'gradientunits', 'gradienttransform', 'height', 'href', 'id', 'image-rendering', 'in', 'in2', 'k', 'k1', 'k2', 'k3', 'k4', 'kerning', 'keypoints', 'keysplines', 'keytimes', 'lang', 'lengthadjust', 'letter-spacing', 'kernelmatrix', 'kernelunitlength', 'lighting-color', 'local', 'marker-end', 'marker-mid', 'marker-start', 'markerheight', 'markerunits', 'markerwidth', 'maskcontentunits', 'maskunits', 'max', 'mask', 'media', 'method', 'mode', 'min', 'name', 'numoctaves', 'offset', 'operator', 'opacity', 'order', 'orient', 'orientation', 'origin', 'overflow', 'paint-order', 'path', 'pathlength', 'patterncontentunits', 'patterntransform', 'patternunits', 'points', 'preservealpha', 'preserveaspectratio', 'primitiveunits', 'r', 'rx', 'ry', 'radius', 'refx', 'refy', 'repeatcount', 'repeatdur', 'restart', 'result', 'rotate', 'scale', 'seed', 'shape-rendering', 'specularconstant', 'specularexponent', 'spreadmethod', 'startoffset', 'stddeviation', 'stitchtiles', 'stop-color', 'stop-opacity', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke', 'stroke-width', 'style', 'surfacescale', 'systemlanguage', 'tabindex', 'targetx', 'targety', 'transform', 'transform-origin', 'text-anchor', 'text-decoration', 'text-rendering', 'textlength', 'type', 'u1', 'u2', 'unicode', 'values', 'viewbox', 'visibility', 'version', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'width', 'word-spacing', 'wrap', 'writing-mode', 'xchannelselector', 'ychannelselector', 'x', 'x1', 'x2', 'xmlns', 'y', 'y1', 'y2', 'z', 'zoomandpan']);
+const mathMl = freeze(['accent', 'accentunder', 'align', 'bevelled', 'close', 'columnsalign', 'columnlines', 'columnspan', 'denomalign', 'depth', 'dir', 'display', 'displaystyle', 'encoding', 'fence', 'frame', 'height', 'href', 'id', 'largeop', 'length', 'linethickness', 'lspace', 'lquote', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant', 'maxsize', 'minsize', 'movablelimits', 'notation', 'numalign', 'open', 'rowalign', 'rowlines', 'rowspacing', 'rowspan', 'rspace', 'rquote', 'scriptlevel', 'scriptminsize', 'scriptsizemultiplier', 'selection', 'separator', 'separators', 'stretchy', 'subscriptshift', 'supscriptshift', 'symmetric', 'voffset', 'width', 'xmlns']);
+const xml = freeze(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']);
+
+const MUSTACHE_EXPR = seal(/\{\{[\w\W]*|[\w\W]*\}\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode
+
+const ERB_EXPR = seal(/<%[\w\W]*|[\w\W]*%>/gm);
+const TMPLIT_EXPR = seal(/\${[\w\W]*}/gm);
+const DATA_ATTR = seal(/^data-[\-\w.\u00B7-\uFFFF]/); // eslint-disable-line no-useless-escape
+
+const ARIA_ATTR = seal(/^aria-[\-\w]+$/); // eslint-disable-line no-useless-escape
+
+const IS_ALLOWED_URI = seal(/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i // eslint-disable-line no-useless-escape
+);
+const IS_SCRIPT_OR_DATA = seal(/^(?:\w+script|data):/i);
+const ATTR_WHITESPACE = seal(/[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205F\u3000]/g // eslint-disable-line no-control-regex
+);
+const DOCTYPE_NAME = seal(/^html$/i);
+
+var EXPRESSIONS = /*#__PURE__*/Object.freeze({
+  __proto__: null,
+  MUSTACHE_EXPR: MUSTACHE_EXPR,
+  ERB_EXPR: ERB_EXPR,
+  TMPLIT_EXPR: TMPLIT_EXPR,
+  DATA_ATTR: DATA_ATTR,
+  ARIA_ATTR: ARIA_ATTR,
+  IS_ALLOWED_URI: IS_ALLOWED_URI,
+  IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA,
+  ATTR_WHITESPACE: ATTR_WHITESPACE,
+  DOCTYPE_NAME: DOCTYPE_NAME
+});
+
+const getGlobal = () => typeof window === 'undefined' ? null : window;
+/**
+ * Creates a no-op policy for internal use only.
+ * Don't export this function outside this module!
+ * @param {?TrustedTypePolicyFactory} trustedTypes The policy factory.
+ * @param {HTMLScriptElement} purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).
+ * @return {?TrustedTypePolicy} The policy created (or null, if Trusted Types
+ * are not supported or creating the policy failed).
+ */
+
+
+const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) {
+  if (typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function') {
+    return null;
+  } // Allow the callers to control the unique policy name
+  // by adding a data-tt-policy-suffix to the script element with the DOMPurify.
+  // Policy creation with duplicate names throws in Trusted Types.
+
+
+  let suffix = null;
+  const ATTR_NAME = 'data-tt-policy-suffix';
+
+  if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {
+    suffix = purifyHostElement.getAttribute(ATTR_NAME);
+  }
+
+  const policyName = 'dompurify' + (suffix ? '#' + suffix : '');
+
+  try {
+    return trustedTypes.createPolicy(policyName, {
+      createHTML(html) {
+        return html;
+      },
+
+      createScriptURL(scriptUrl) {
+        return scriptUrl;
+      }
+
+    });
+  } catch (_) {
+    // Policy creation failed (most likely another DOMPurify script has
+    // already run). Skip creating the policy, as this will only cause errors
+    // if TT are enforced.
+    console.warn('TrustedTypes policy ' + policyName + ' could not be created.');
+    return null;
+  }
+};
+
+function createDOMPurify() {
+  let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal();
+
+  const DOMPurify = root => createDOMPurify(root);
+  /**
+   * Version label, exposed for easier checks
+   * if DOMPurify is up to date or not
+   */
+
+
+  DOMPurify.version = '3.0.5';
+  /**
+   * Array of elements that DOMPurify removed during sanitation.
+   * Empty if nothing was removed.
+   */
+
+  DOMPurify.removed = [];
+
+  if (!window || !window.document || window.document.nodeType !== 9) {
+    // Not running in a browser, provide a factory function
+    // so that you can pass your own Window
+    DOMPurify.isSupported = false;
+    return DOMPurify;
+  }
+
+  const originalDocument = window.document;
+  const currentScript = originalDocument.currentScript;
+  let {
+    document
+  } = window;
+  const {
+    DocumentFragment,
+    HTMLTemplateElement,
+    Node,
+    Element,
+    NodeFilter,
+    NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap,
+    HTMLFormElement,
+    DOMParser,
+    trustedTypes
+  } = window;
+  const ElementPrototype = Element.prototype;
+  const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');
+  const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');
+  const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');
+  const getParentNode = lookupGetter(ElementPrototype, 'parentNode'); // As per issue #47, the web-components registry is inherited by a
+  // new document created via createHTMLDocument. As per the spec
+  // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)
+  // a new empty registry is used when creating a template contents owner
+  // document, so we use that as our parent document to ensure nothing
+  // is inherited.
+
+  if (typeof HTMLTemplateElement === 'function') {
+    const template = document.createElement('template');
+
+    if (template.content && template.content.ownerDocument) {
+      document = template.content.ownerDocument;
+    }
+  }
+
+  let trustedTypesPolicy;
+  let emptyHTML = '';
+  const {
+    implementation,
+    createNodeIterator,
+    createDocumentFragment,
+    getElementsByTagName
+  } = document;
+  const {
+    importNode
+  } = originalDocument;
+  let hooks = {};
+  /**
+   * Expose whether this browser supports running the full DOMPurify.
+   */
+
+  DOMPurify.isSupported = typeof entries === 'function' && typeof getParentNode === 'function' && implementation && implementation.createHTMLDocument !== undefined;
+  const {
+    MUSTACHE_EXPR,
+    ERB_EXPR,
+    TMPLIT_EXPR,
+    DATA_ATTR,
+    ARIA_ATTR,
+    IS_SCRIPT_OR_DATA,
+    ATTR_WHITESPACE
+  } = EXPRESSIONS;
+  let {
+    IS_ALLOWED_URI: IS_ALLOWED_URI$1
+  } = EXPRESSIONS;
+  /**
+   * We consider the elements and attributes below to be safe. Ideally
+   * don't add any new ones but feel free to remove unwanted ones.
+   */
+
+  /* allowed element names */
+
+  let ALLOWED_TAGS = null;
+  const DEFAULT_ALLOWED_TAGS = addToSet({}, [...html$1, ...svg$1, ...svgFilters, ...mathMl$1, ...text]);
+  /* Allowed attribute names */
+
+  let ALLOWED_ATTR = null;
+  const DEFAULT_ALLOWED_ATTR = addToSet({}, [...html, ...svg, ...mathMl, ...xml]);
+  /*
+   * Configure how DOMPUrify should handle custom elements and their attributes as well as customized built-in elements.
+   * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)
+   * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)
+   * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.
+   */
+
+  let CUSTOM_ELEMENT_HANDLING = Object.seal(Object.create(null, {
+    tagNameCheck: {
+      writable: true,
+      configurable: false,
+      enumerable: true,
+      value: null
+    },
+    attributeNameCheck: {
+      writable: true,
+      configurable: false,
+      enumerable: true,
+      value: null
+    },
+    allowCustomizedBuiltInElements: {
+      writable: true,
+      configurable: false,
+      enumerable: true,
+      value: false
+    }
+  }));
+  /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */
+
+  let FORBID_TAGS = null;
+  /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */
+
+  let FORBID_ATTR = null;
+  /* Decide if ARIA attributes are okay */
+
+  let ALLOW_ARIA_ATTR = true;
+  /* Decide if custom data attributes are okay */
+
+  let ALLOW_DATA_ATTR = true;
+  /* Decide if unknown protocols are okay */
+
+  let ALLOW_UNKNOWN_PROTOCOLS = false;
+  /* Decide if self-closing tags in attributes are allowed.
+   * Usually removed due to a mXSS issue in jQuery 3.0 */
+
+  let ALLOW_SELF_CLOSE_IN_ATTR = true;
+  /* Output should be safe for common template engines.
+   * This means, DOMPurify removes data attributes, mustaches and ERB
+   */
+
+  let SAFE_FOR_TEMPLATES = false;
+  /* Decide if document with <html>... should be returned */
+
+  let WHOLE_DOCUMENT = false;
+  /* Track whether config is already set on this instance of DOMPurify. */
+
+  let SET_CONFIG = false;
+  /* Decide if all elements (e.g. style, script) must be children of
+   * document.body. By default, browsers might move them to document.head */
+
+  let FORCE_BODY = false;
+  /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html
+   * string (or a TrustedHTML object if Trusted Types are supported).
+   * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead
+   */
+
+  let RETURN_DOM = false;
+  /* Decide if a DOM `DocumentFragment` should be returned, instead of a html
+   * string  (or a TrustedHTML object if Trusted Types are supported) */
+
+  let RETURN_DOM_FRAGMENT = false;
+  /* Try to return a Trusted Type object instead of a string, return a string in
+   * case Trusted Types are not supported  */
+
+  let RETURN_TRUSTED_TYPE = false;
+  /* Output should be free from DOM clobbering attacks?
+   * This sanitizes markups named with colliding, clobberable built-in DOM APIs.
+   */
+
+  let SANITIZE_DOM = true;
+  /* Achieve full DOM Clobbering protection by isolating the namespace of named
+   * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.
+   *
+   * HTML/DOM spec rules that enable DOM Clobbering:
+   *   - Named Access on Window (§7.3.3)
+   *   - DOM Tree Accessors (§3.1.5)
+   *   - Form Element Parent-Child Relations (§4.10.3)
+   *   - Iframe srcdoc / Nested WindowProxies (§4.8.5)
+   *   - HTMLCollection (§4.2.10.2)
+   *
+   * Namespace isolation is implemented by prefixing `id` and `name` attributes
+   * with a constant string, i.e., `user-content-`
+   */
+
+  let SANITIZE_NAMED_PROPS = false;
+  const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';
+  /* Keep element content when removing element? */
+
+  let KEEP_CONTENT = true;
+  /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead
+   * of importing it into a new Document and returning a sanitized copy */
+
+  let IN_PLACE = false;
+  /* Allow usage of profiles like html, svg and mathMl */
+
+  let USE_PROFILES = {};
+  /* Tags to ignore content of when KEEP_CONTENT is true */
+
+  let FORBID_CONTENTS = null;
+  const DEFAULT_FORBID_CONTENTS = addToSet({}, ['annotation-xml', 'audio', 'colgroup', 'desc', 'foreignobject', 'head', 'iframe', 'math', 'mi', 'mn', 'mo', 'ms', 'mtext', 'noembed', 'noframes', 'noscript', 'plaintext', 'script', 'style', 'svg', 'template', 'thead', 'title', 'video', 'xmp']);
+  /* Tags that are safe for data: URIs */
+
+  let DATA_URI_TAGS = null;
+  const DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']);
+  /* Attributes safe for values like "javascript:" */
+
+  let URI_SAFE_ATTRIBUTES = null;
+  const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']);
+  const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';
+  const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';
+  const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';
+  /* Document namespace */
+
+  let NAMESPACE = HTML_NAMESPACE;
+  let IS_EMPTY_INPUT = false;
+  /* Allowed XHTML+XML namespaces */
+
+  let ALLOWED_NAMESPACES = null;
+  const DEFAULT_ALLOWED_NAMESPACES = addToSet({}, [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE], stringToString);
+  /* Parsing of strict XHTML documents */
+
+  let PARSER_MEDIA_TYPE;
+  const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];
+  const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';
+  let transformCaseFunc;
+  /* Keep a reference to config to pass to hooks */
+
+  let CONFIG = null;
+  /* Ideally, do not touch anything below this line */
+
+  /* ______________________________________________ */
+
+  const formElement = document.createElement('form');
+
+  const isRegexOrFunction = function isRegexOrFunction(testValue) {
+    return testValue instanceof RegExp || testValue instanceof Function;
+  };
+  /**
+   * _parseConfig
+   *
+   * @param  {Object} cfg optional config literal
+   */
+  // eslint-disable-next-line complexity
+
+
+  const _parseConfig = function _parseConfig(cfg) {
+    if (CONFIG && CONFIG === cfg) {
+      return;
+    }
+    /* Shield configuration object from tampering */
+
+
+    if (!cfg || typeof cfg !== 'object') {
+      cfg = {};
+    }
+    /* Shield configuration object from prototype pollution */
+
+
+    cfg = clone(cfg);
+    PARSER_MEDIA_TYPE = // eslint-disable-next-line unicorn/prefer-includes
+    SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? PARSER_MEDIA_TYPE = DEFAULT_PARSER_MEDIA_TYPE : PARSER_MEDIA_TYPE = cfg.PARSER_MEDIA_TYPE; // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.
+
+    transformCaseFunc = PARSER_MEDIA_TYPE === 'application/xhtml+xml' ? stringToString : stringToLowerCase;
+    /* Set configuration parameters */
+
+    ALLOWED_TAGS = 'ALLOWED_TAGS' in cfg ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS;
+    ALLOWED_ATTR = 'ALLOWED_ATTR' in cfg ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR;
+    ALLOWED_NAMESPACES = 'ALLOWED_NAMESPACES' in cfg ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES;
+    URI_SAFE_ATTRIBUTES = 'ADD_URI_SAFE_ATTR' in cfg ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), // eslint-disable-line indent
+    cfg.ADD_URI_SAFE_ATTR, // eslint-disable-line indent
+    transformCaseFunc // eslint-disable-line indent
+    ) // eslint-disable-line indent
+    : DEFAULT_URI_SAFE_ATTRIBUTES;
+    DATA_URI_TAGS = 'ADD_DATA_URI_TAGS' in cfg ? addToSet(clone(DEFAULT_DATA_URI_TAGS), // eslint-disable-line indent
+    cfg.ADD_DATA_URI_TAGS, // eslint-disable-line indent
+    transformCaseFunc // eslint-disable-line indent
+    ) // eslint-disable-line indent
+    : DEFAULT_DATA_URI_TAGS;
+    FORBID_CONTENTS = 'FORBID_CONTENTS' in cfg ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS;
+    FORBID_TAGS = 'FORBID_TAGS' in cfg ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : {};
+    FORBID_ATTR = 'FORBID_ATTR' in cfg ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : {};
+    USE_PROFILES = 'USE_PROFILES' in cfg ? cfg.USE_PROFILES : false;
+    ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true
+
+    ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true
+
+    ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false
+
+    ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true
+
+    SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false
+
+    WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false
+
+    RETURN_DOM = cfg.RETURN_DOM || false; // Default false
+
+    RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false
+
+    RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false
+
+    FORCE_BODY = cfg.FORCE_BODY || false; // Default false
+
+    SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true
+
+    SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false
+
+    KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true
+
+    IN_PLACE = cfg.IN_PLACE || false; // Default false
+
+    IS_ALLOWED_URI$1 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI;
+    NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;
+    CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {};
+
+    if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)) {
+      CUSTOM_ELEMENT_HANDLING.tagNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck;
+    }
+
+    if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)) {
+      CUSTOM_ELEMENT_HANDLING.attributeNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck;
+    }
+
+    if (cfg.CUSTOM_ELEMENT_HANDLING && typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements === 'boolean') {
+      CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements = cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements;
+    }
+
+    if (SAFE_FOR_TEMPLATES) {
+      ALLOW_DATA_ATTR = false;
+    }
+
+    if (RETURN_DOM_FRAGMENT) {
+      RETURN_DOM = true;
+    }
+    /* Parse profile info */
+
+
+    if (USE_PROFILES) {
+      ALLOWED_TAGS = addToSet({}, [...text]);
+      ALLOWED_ATTR = [];
+
+      if (USE_PROFILES.html === true) {
+        addToSet(ALLOWED_TAGS, html$1);
+        addToSet(ALLOWED_ATTR, html);
+      }
+
+      if (USE_PROFILES.svg === true) {
+        addToSet(ALLOWED_TAGS, svg$1);
+        addToSet(ALLOWED_ATTR, svg);
+        addToSet(ALLOWED_ATTR, xml);
+      }
+
+      if (USE_PROFILES.svgFilters === true) {
+        addToSet(ALLOWED_TAGS, svgFilters);
+        addToSet(ALLOWED_ATTR, svg);
+        addToSet(ALLOWED_ATTR, xml);
+      }
+
+      if (USE_PROFILES.mathMl === true) {
+        addToSet(ALLOWED_TAGS, mathMl$1);
+        addToSet(ALLOWED_ATTR, mathMl);
+        addToSet(ALLOWED_ATTR, xml);
+      }
+    }
+    /* Merge configuration parameters */
+
+
+    if (cfg.ADD_TAGS) {
+      if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {
+        ALLOWED_TAGS = clone(ALLOWED_TAGS);
+      }
+
+      addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);
+    }
+
+    if (cfg.ADD_ATTR) {
+      if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {
+        ALLOWED_ATTR = clone(ALLOWED_ATTR);
+      }
+
+      addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);
+    }
+
+    if (cfg.ADD_URI_SAFE_ATTR) {
+      addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);
+    }
+
+    if (cfg.FORBID_CONTENTS) {
+      if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {
+        FORBID_CONTENTS = clone(FORBID_CONTENTS);
+      }
+
+      addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);
+    }
+    /* Add #text in case KEEP_CONTENT is set to true */
+
+
+    if (KEEP_CONTENT) {
+      ALLOWED_TAGS['#text'] = true;
+    }
+    /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */
+
+
+    if (WHOLE_DOCUMENT) {
+      addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);
+    }
+    /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */
+
+
+    if (ALLOWED_TAGS.table) {
+      addToSet(ALLOWED_TAGS, ['tbody']);
+      delete FORBID_TAGS.tbody;
+    }
+
+    if (cfg.TRUSTED_TYPES_POLICY) {
+      if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {
+        throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createHTML" hook.');
+      }
+
+      if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {
+        throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createScriptURL" hook.');
+      } // Overwrite existing TrustedTypes policy.
+
+
+      trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY; // Sign local variables required by `sanitize`.
+
+      emptyHTML = trustedTypesPolicy.createHTML('');
+    } else {
+      // Uninitialized policy, attempt to initialize the internal dompurify policy.
+      if (trustedTypesPolicy === undefined) {
+        trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript);
+      } // If creating the internal policy succeeded sign internal variables.
+
+
+      if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {
+        emptyHTML = trustedTypesPolicy.createHTML('');
+      }
+    } // Prevent further manipulation of configuration.
+    // Not available in IE8, Safari 5, etc.
+
+
+    if (freeze) {
+      freeze(cfg);
+    }
+
+    CONFIG = cfg;
+  };
+
+  const MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']);
+  const HTML_INTEGRATION_POINTS = addToSet({}, ['foreignobject', 'desc', 'title', 'annotation-xml']); // Certain elements are allowed in both SVG and HTML
+  // namespace. We need to specify them explicitly
+  // so that they don't get erroneously deleted from
+  // HTML namespace.
+
+  const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']);
+  /* Keep track of all possible SVG and MathML tags
+   * so that we can perform the namespace checks
+   * correctly. */
+
+  const ALL_SVG_TAGS = addToSet({}, svg$1);
+  addToSet(ALL_SVG_TAGS, svgFilters);
+  addToSet(ALL_SVG_TAGS, svgDisallowed);
+  const ALL_MATHML_TAGS = addToSet({}, mathMl$1);
+  addToSet(ALL_MATHML_TAGS, mathMlDisallowed);
+  /**
+   *
+   *
+   * @param  {Element} element a DOM element whose namespace is being checked
+   * @returns {boolean} Return false if the element has a
+   *  namespace that a spec-compliant parser would never
+   *  return. Return true otherwise.
+   */
+
+  const _checkValidNamespace = function _checkValidNamespace(element) {
+    let parent = getParentNode(element); // In JSDOM, if we're inside shadow DOM, then parentNode
+    // can be null. We just simulate parent in this case.
+
+    if (!parent || !parent.tagName) {
+      parent = {
+        namespaceURI: NAMESPACE,
+        tagName: 'template'
+      };
+    }
+
+    const tagName = stringToLowerCase(element.tagName);
+    const parentTagName = stringToLowerCase(parent.tagName);
+
+    if (!ALLOWED_NAMESPACES[element.namespaceURI]) {
+      return false;
+    }
+
+    if (element.namespaceURI === SVG_NAMESPACE) {
+      // The only way to switch from HTML namespace to SVG
+      // is via <svg>. If it happens via any other tag, then
+      // it should be killed.
+      if (parent.namespaceURI === HTML_NAMESPACE) {
+        return tagName === 'svg';
+      } // The only way to switch from MathML to SVG is via`
+      // svg if parent is either <annotation-xml> or MathML
+      // text integration points.
+
+
+      if (parent.namespaceURI === MATHML_NAMESPACE) {
+        return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]);
+      } // We only allow elements that are defined in SVG
+      // spec. All others are disallowed in SVG namespace.
+
+
+      return Boolean(ALL_SVG_TAGS[tagName]);
+    }
+
+    if (element.namespaceURI === MATHML_NAMESPACE) {
+      // The only way to switch from HTML namespace to MathML
+      // is via <math>. If it happens via any other tag, then
+      // it should be killed.
+      if (parent.namespaceURI === HTML_NAMESPACE) {
+        return tagName === 'math';
+      } // The only way to switch from SVG to MathML is via
+      // <math> and HTML integration points
+
+
+      if (parent.namespaceURI === SVG_NAMESPACE) {
+        return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];
+      } // We only allow elements that are defined in MathML
+      // spec. All others are disallowed in MathML namespace.
+
+
+      return Boolean(ALL_MATHML_TAGS[tagName]);
+    }
+
+    if (element.namespaceURI === HTML_NAMESPACE) {
+      // The only way to switch from SVG to HTML is via
+      // HTML integration points, and from MathML to HTML
+      // is via MathML text integration points
+      if (parent.namespaceURI === SVG_NAMESPACE && !HTML_INTEGRATION_POINTS[parentTagName]) {
+        return false;
+      }
+
+      if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) {
+        return false;
+      } // We disallow tags that are specific for MathML
+      // or SVG and should never appear in HTML namespace
+
+
+      return !ALL_MATHML_TAGS[tagName] && (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName]);
+    } // For XHTML and XML documents that support custom namespaces
+
+
+    if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && ALLOWED_NAMESPACES[element.namespaceURI]) {
+      return true;
+    } // The code should never reach this place (this means
+    // that the element somehow got namespace that is not
+    // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).
+    // Return false just in case.
+
+
+    return false;
+  };
+  /**
+   * _forceRemove
+   *
+   * @param  {Node} node a DOM node
+   */
+
+
+  const _forceRemove = function _forceRemove(node) {
+    arrayPush(DOMPurify.removed, {
+      element: node
+    });
+
+    try {
+      // eslint-disable-next-line unicorn/prefer-dom-node-remove
+      node.parentNode.removeChild(node);
+    } catch (_) {
+      node.remove();
+    }
+  };
+  /**
+   * _removeAttribute
+   *
+   * @param  {String} name an Attribute name
+   * @param  {Node} node a DOM node
+   */
+
+
+  const _removeAttribute = function _removeAttribute(name, node) {
+    try {
+      arrayPush(DOMPurify.removed, {
+        attribute: node.getAttributeNode(name),
+        from: node
+      });
+    } catch (_) {
+      arrayPush(DOMPurify.removed, {
+        attribute: null,
+        from: node
+      });
+    }
+
+    node.removeAttribute(name); // We void attribute values for unremovable "is"" attributes
+
+    if (name === 'is' && !ALLOWED_ATTR[name]) {
+      if (RETURN_DOM || RETURN_DOM_FRAGMENT) {
+        try {
+          _forceRemove(node);
+        } catch (_) {}
+      } else {
+        try {
+          node.setAttribute(name, '');
+        } catch (_) {}
+      }
+    }
+  };
+  /**
+   * _initDocument
+   *
+   * @param  {String} dirty a string of dirty markup
+   * @return {Document} a DOM, filled with the dirty markup
+   */
+
+
+  const _initDocument = function _initDocument(dirty) {
+    /* Create a HTML document */
+    let doc;
+    let leadingWhitespace;
+
+    if (FORCE_BODY) {
+      dirty = '<remove></remove>' + dirty;
+    } else {
+      /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */
+      const matches = stringMatch(dirty, /^[\r\n\t ]+/);
+      leadingWhitespace = matches && matches[0];
+    }
+
+    if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && NAMESPACE === HTML_NAMESPACE) {
+      // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)
+      dirty = '<html xmlns="http://www.w3.org/1999/xhtml"><head></head><body>' + dirty + '</body></html>';
+    }
+
+    const dirtyPayload = trustedTypesPolicy ? trustedTypesPolicy.createHTML(dirty) : dirty;
+    /*
+     * Use the DOMParser API by default, fallback later if needs be
+     * DOMParser not work for svg when has multiple root element.
+     */
+
+    if (NAMESPACE === HTML_NAMESPACE) {
+      try {
+        doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);
+      } catch (_) {}
+    }
+    /* Use createHTMLDocument in case DOMParser is not available */
+
+
+    if (!doc || !doc.documentElement) {
+      doc = implementation.createDocument(NAMESPACE, 'template', null);
+
+      try {
+        doc.documentElement.innerHTML = IS_EMPTY_INPUT ? emptyHTML : dirtyPayload;
+      } catch (_) {// Syntax error if dirtyPayload is invalid xml
+      }
+    }
+
+    const body = doc.body || doc.documentElement;
+
+    if (dirty && leadingWhitespace) {
+      body.insertBefore(document.createTextNode(leadingWhitespace), body.childNodes[0] || null);
+    }
+    /* Work on whole document or just its body */
+
+
+    if (NAMESPACE === HTML_NAMESPACE) {
+      return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0];
+    }
+
+    return WHOLE_DOCUMENT ? doc.documentElement : body;
+  };
+  /**
+   * _createIterator
+   *
+   * @param  {Document} root document/fragment to create iterator for
+   * @return {Iterator} iterator instance
+   */
+
+
+  const _createIterator = function _createIterator(root) {
+    return createNodeIterator.call(root.ownerDocument || root, root, // eslint-disable-next-line no-bitwise
+    NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT, null, false);
+  };
+  /**
+   * _isClobbered
+   *
+   * @param  {Node} elm element to check for clobbering attacks
+   * @return {Boolean} true if clobbered, false if safe
+   */
+
+
+  const _isClobbered = function _isClobbered(elm) {
+    return elm instanceof HTMLFormElement && (typeof elm.nodeName !== 'string' || typeof elm.textContent !== 'string' || typeof elm.removeChild !== 'function' || !(elm.attributes instanceof NamedNodeMap) || typeof elm.removeAttribute !== 'function' || typeof elm.setAttribute !== 'function' || typeof elm.namespaceURI !== 'string' || typeof elm.insertBefore !== 'function' || typeof elm.hasChildNodes !== 'function');
+  };
+  /**
+   * _isNode
+   *
+   * @param  {Node} obj object to check whether it's a DOM node
+   * @return {Boolean} true is object is a DOM node
+   */
+
+
+  const _isNode = function _isNode(object) {
+    return typeof Node === 'object' ? object instanceof Node : object && typeof object === 'object' && typeof object.nodeType === 'number' && typeof object.nodeName === 'string';
+  };
+  /**
+   * _executeHook
+   * Execute user configurable hooks
+   *
+   * @param  {String} entryPoint  Name of the hook's entry point
+   * @param  {Node} currentNode node to work on with the hook
+   * @param  {Object} data additional hook parameters
+   */
+
+
+  const _executeHook = function _executeHook(entryPoint, currentNode, data) {
+    if (!hooks[entryPoint]) {
+      return;
+    }
+
+    arrayForEach(hooks[entryPoint], hook => {
+      hook.call(DOMPurify, currentNode, data, CONFIG);
+    });
+  };
+  /**
+   * _sanitizeElements
+   *
+   * @protect nodeName
+   * @protect textContent
+   * @protect removeChild
+   *
+   * @param   {Node} currentNode to check for permission to exist
+   * @return  {Boolean} true if node was killed, false if left alive
+   */
+
+
+  const _sanitizeElements = function _sanitizeElements(currentNode) {
+    let content;
+    /* Execute a hook if present */
+
+    _executeHook('beforeSanitizeElements', currentNode, null);
+    /* Check if element is clobbered or can clobber */
+
+
+    if (_isClobbered(currentNode)) {
+      _forceRemove(currentNode);
+
+      return true;
+    }
+    /* Now let's check the element's type and name */
+
+
+    const tagName = transformCaseFunc(currentNode.nodeName);
+    /* Execute a hook if present */
+
+    _executeHook('uponSanitizeElement', currentNode, {
+      tagName,
+      allowedTags: ALLOWED_TAGS
+    });
+    /* Detect mXSS attempts abusing namespace confusion */
+
+
+    if (currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && (!_isNode(currentNode.content) || !_isNode(currentNode.content.firstElementChild)) && regExpTest(/<[/\w]/g, currentNode.innerHTML) && regExpTest(/<[/\w]/g, currentNode.textContent)) {
+      _forceRemove(currentNode);
+
+      return true;
+    }
+    /* Remove element if anything forbids its presence */
+
+
+    if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {
+      /* Check if we have a custom element to handle */
+      if (!FORBID_TAGS[tagName] && _basicCustomElementTest(tagName)) {
+        if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)) return false;
+        if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)) return false;
+      }
+      /* Keep content except for bad-listed elements */
+
+
+      if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {
+        const parentNode = getParentNode(currentNode) || currentNode.parentNode;
+        const childNodes = getChildNodes(currentNode) || currentNode.childNodes;
+
+        if (childNodes && parentNode) {
+          const childCount = childNodes.length;
+
+          for (let i = childCount - 1; i >= 0; --i) {
+            parentNode.insertBefore(cloneNode(childNodes[i], true), getNextSibling(currentNode));
+          }
+        }
+      }
+
+      _forceRemove(currentNode);
+
+      return true;
+    }
+    /* Check whether element has a valid namespace */
+
+
+    if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) {
+      _forceRemove(currentNode);
+
+      return true;
+    }
+    /* Make sure that older browsers don't get fallback-tag mXSS */
+
+
+    if ((tagName === 'noscript' || tagName === 'noembed' || tagName === 'noframes') && regExpTest(/<\/no(script|embed|frames)/i, currentNode.innerHTML)) {
+      _forceRemove(currentNode);
+
+      return true;
+    }
+    /* Sanitize element content to be template-safe */
+
+
+    if (SAFE_FOR_TEMPLATES && currentNode.nodeType === 3) {
+      /* Get the element's text content */
+      content = currentNode.textContent;
+      content = stringReplace(content, MUSTACHE_EXPR, ' ');
+      content = stringReplace(content, ERB_EXPR, ' ');
+      content = stringReplace(content, TMPLIT_EXPR, ' ');
+
+      if (currentNode.textContent !== content) {
+        arrayPush(DOMPurify.removed, {
+          element: currentNode.cloneNode()
+        });
+        currentNode.textContent = content;
+      }
+    }
+    /* Execute a hook if present */
+
+
+    _executeHook('afterSanitizeElements', currentNode, null);
+
+    return false;
+  };
+  /**
+   * _isValidAttribute
+   *
+   * @param  {string} lcTag Lowercase tag name of containing element.
+   * @param  {string} lcName Lowercase attribute name.
+   * @param  {string} value Attribute value.
+   * @return {Boolean} Returns true if `value` is valid, otherwise false.
+   */
+  // eslint-disable-next-line complexity
+
+
+  const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) {
+    /* Make sure attribute cannot clobber */
+    if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) {
+      return false;
+    }
+    /* Allow valid data-* attributes: At least one character after "-"
+        (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)
+        XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)
+        We don't need to check the value; it's always URI safe. */
+
+
+    if (ALLOW_DATA_ATTR && !FORBID_ATTR[lcName] && regExpTest(DATA_ATTR, lcName)) ; else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) ; else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) {
+      if ( // First condition does a very basic check if a) it's basically a valid custom element tagname AND
+      // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck
+      // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck
+      _basicCustomElementTest(lcTag) && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag)) && (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName) || CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName)) || // Alternative, second condition checks if it's an `is`-attribute, AND
+      // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck
+      lcName === 'is' && CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))) ; else {
+        return false;
+      }
+      /* Check value is safe. First, is attr inert? If so, is safe */
+
+    } else if (URI_SAFE_ATTRIBUTES[lcName]) ; else if (regExpTest(IS_ALLOWED_URI$1, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if ((lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') && lcTag !== 'script' && stringIndexOf(value, 'data:') === 0 && DATA_URI_TAGS[lcTag]) ; else if (ALLOW_UNKNOWN_PROTOCOLS && !regExpTest(IS_SCRIPT_OR_DATA, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if (value) {
+      return false;
+    } else ;
+
+    return true;
+  };
+  /**
+   * _basicCustomElementCheck
+   * checks if at least one dash is included in tagName, and it's not the first char
+   * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name
+   * @param {string} tagName name of the tag of the node to sanitize
+   */
+
+
+  const _basicCustomElementTest = function _basicCustomElementTest(tagName) {
+    return tagName.indexOf('-') > 0;
+  };
+  /**
+   * _sanitizeAttributes
+   *
+   * @protect attributes
+   * @protect nodeName
+   * @protect removeAttribute
+   * @protect setAttribute
+   *
+   * @param  {Node} currentNode to sanitize
+   */
+
+
+  const _sanitizeAttributes = function _sanitizeAttributes(currentNode) {
+    let attr;
+    let value;
+    let lcName;
+    let l;
+    /* Execute a hook if present */
+
+    _executeHook('beforeSanitizeAttributes', currentNode, null);
+
+    const {
+      attributes
+    } = currentNode;
+    /* Check if we have attributes; if not we might have a text node */
+
+    if (!attributes) {
+      return;
+    }
+
+    const hookEvent = {
+      attrName: '',
+      attrValue: '',
+      keepAttr: true,
+      allowedAttributes: ALLOWED_ATTR
+    };
+    l = attributes.length;
+    /* Go backwards over all attributes; safely remove bad ones */
+
+    while (l--) {
+      attr = attributes[l];
+      const {
+        name,
+        namespaceURI
+      } = attr;
+      value = name === 'value' ? attr.value : stringTrim(attr.value);
+      lcName = transformCaseFunc(name);
+      /* Execute a hook if present */
+
+      hookEvent.attrName = lcName;
+      hookEvent.attrValue = value;
+      hookEvent.keepAttr = true;
+      hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set
+
+      _executeHook('uponSanitizeAttribute', currentNode, hookEvent);
+
+      value = hookEvent.attrValue;
+      /* Did the hooks approve of the attribute? */
+
+      if (hookEvent.forceKeepAttr) {
+        continue;
+      }
+      /* Remove attribute */
+
+
+      _removeAttribute(name, currentNode);
+      /* Did the hooks approve of the attribute? */
+
+
+      if (!hookEvent.keepAttr) {
+        continue;
+      }
+      /* Work around a security issue in jQuery 3.0 */
+
+
+      if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\/>/i, value)) {
+        _removeAttribute(name, currentNode);
+
+        continue;
+      }
+      /* Sanitize attribute content to be template-safe */
+
+
+      if (SAFE_FOR_TEMPLATES) {
+        value = stringReplace(value, MUSTACHE_EXPR, ' ');
+        value = stringReplace(value, ERB_EXPR, ' ');
+        value = stringReplace(value, TMPLIT_EXPR, ' ');
+      }
+      /* Is `value` valid for this attribute? */
+
+
+      const lcTag = transformCaseFunc(currentNode.nodeName);
+
+      if (!_isValidAttribute(lcTag, lcName, value)) {
+        continue;
+      }
+      /* Full DOM Clobbering protection via namespace isolation,
+       * Prefix id and name attributes with `user-content-`
+       */
+
+
+      if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) {
+        // Remove the attribute with this value
+        _removeAttribute(name, currentNode); // Prefix the value and later re-create the attribute with the sanitized value
+
+
+        value = SANITIZE_NAMED_PROPS_PREFIX + value;
+      }
+      /* Handle attributes that require Trusted Types */
+
+
+      if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') {
+        if (namespaceURI) ; else {
+          switch (trustedTypes.getAttributeType(lcTag, lcName)) {
+            case 'TrustedHTML':
+              {
+                value = trustedTypesPolicy.createHTML(value);
+                break;
+              }
+
+            case 'TrustedScriptURL':
+              {
+                value = trustedTypesPolicy.createScriptURL(value);
+                break;
+              }
+          }
+        }
+      }
+      /* Handle invalid data-* attribute set by try-catching it */
+
+
+      try {
+        if (namespaceURI) {
+          currentNode.setAttributeNS(namespaceURI, name, value);
+        } else {
+          /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. "x-schema". */
+          currentNode.setAttribute(name, value);
+        }
+
+        arrayPop(DOMPurify.removed);
+      } catch (_) {}
+    }
+    /* Execute a hook if present */
+
+
+    _executeHook('afterSanitizeAttributes', currentNode, null);
+  };
+  /**
+   * _sanitizeShadowDOM
+   *
+   * @param  {DocumentFragment} fragment to iterate over recursively
+   */
+
+
+  const _sanitizeShadowDOM = function _sanitizeShadowDOM(fragment) {
+    let shadowNode;
+
+    const shadowIterator = _createIterator(fragment);
+    /* Execute a hook if present */
+
+
+    _executeHook('beforeSanitizeShadowDOM', fragment, null);
+
+    while (shadowNode = shadowIterator.nextNode()) {
+      /* Execute a hook if present */
+      _executeHook('uponSanitizeShadowNode', shadowNode, null);
+      /* Sanitize tags and elements */
+
+
+      if (_sanitizeElements(shadowNode)) {
+        continue;
+      }
+      /* Deep shadow DOM detected */
+
+
+      if (shadowNode.content instanceof DocumentFragment) {
+        _sanitizeShadowDOM(shadowNode.content);
+      }
+      /* Check attributes, sanitize if necessary */
+
+
+      _sanitizeAttributes(shadowNode);
+    }
+    /* Execute a hook if present */
+
+
+    _executeHook('afterSanitizeShadowDOM', fragment, null);
+  };
+  /**
+   * Sanitize
+   * Public method providing core sanitation functionality
+   *
+   * @param {String|Node} dirty string or DOM node
+   * @param {Object} configuration object
+   */
+  // eslint-disable-next-line complexity
+
+
+  DOMPurify.sanitize = function (dirty) {
+    let cfg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+    let body;
+    let importedNode;
+    let currentNode;
+    let returnNode;
+    /* Make sure we have a string to sanitize.
+      DO NOT return early, as this will return the wrong type if
+      the user has requested a DOM object rather than a string */
+
+    IS_EMPTY_INPUT = !dirty;
+
+    if (IS_EMPTY_INPUT) {
+      dirty = '<!-->';
+    }
+    /* Stringify, in case dirty is an object */
+
+
+    if (typeof dirty !== 'string' && !_isNode(dirty)) {
+      if (typeof dirty.toString === 'function') {
+        dirty = dirty.toString();
+
+        if (typeof dirty !== 'string') {
+          throw typeErrorCreate('dirty is not a string, aborting');
+        }
+      } else {
+        throw typeErrorCreate('toString is not a function');
+      }
+    }
+    /* Return dirty HTML if DOMPurify cannot run */
+
+
+    if (!DOMPurify.isSupported) {
+      return dirty;
+    }
+    /* Assign config vars */
+
+
+    if (!SET_CONFIG) {
+      _parseConfig(cfg);
+    }
+    /* Clean up removed elements */
+
+
+    DOMPurify.removed = [];
+    /* Check if dirty is correctly typed for IN_PLACE */
+
+    if (typeof dirty === 'string') {
+      IN_PLACE = false;
+    }
+
+    if (IN_PLACE) {
+      /* Do some early pre-sanitization to avoid unsafe root nodes */
+      if (dirty.nodeName) {
+        const tagName = transformCaseFunc(dirty.nodeName);
+
+        if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {
+          throw typeErrorCreate('root node is forbidden and cannot be sanitized in-place');
+        }
+      }
+    } else if (dirty instanceof Node) {
+      /* If dirty is a DOM element, append to an empty document to avoid
+         elements being stripped by the parser */
+      body = _initDocument('<!---->');
+      importedNode = body.ownerDocument.importNode(dirty, true);
+
+      if (importedNode.nodeType === 1 && importedNode.nodeName === 'BODY') {
+        /* Node is already a body, use as is */
+        body = importedNode;
+      } else if (importedNode.nodeName === 'HTML') {
+        body = importedNode;
+      } else {
+        // eslint-disable-next-line unicorn/prefer-dom-node-append
+        body.appendChild(importedNode);
+      }
+    } else {
+      /* Exit directly if we have nothing to do */
+      if (!RETURN_DOM && !SAFE_FOR_TEMPLATES && !WHOLE_DOCUMENT && // eslint-disable-next-line unicorn/prefer-includes
+      dirty.indexOf('<') === -1) {
+        return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(dirty) : dirty;
+      }
+      /* Initialize the document to work on */
+
+
+      body = _initDocument(dirty);
+      /* Check we have a DOM node from the data */
+
+      if (!body) {
+        return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : '';
+      }
+    }
+    /* Remove first element node (ours) if FORCE_BODY is set */
+
+
+    if (body && FORCE_BODY) {
+      _forceRemove(body.firstChild);
+    }
+    /* Get node iterator */
+
+
+    const nodeIterator = _createIterator(IN_PLACE ? dirty : body);
+    /* Now start iterating over the created document */
+
+
+    while (currentNode = nodeIterator.nextNode()) {
+      /* Sanitize tags and elements */
+      if (_sanitizeElements(currentNode)) {
+        continue;
+      }
+      /* Shadow DOM detected, sanitize it */
+
+
+      if (currentNode.content instanceof DocumentFragment) {
+        _sanitizeShadowDOM(currentNode.content);
+      }
+      /* Check attributes, sanitize if necessary */
+
+
+      _sanitizeAttributes(currentNode);
+    }
+    /* If we sanitized `dirty` in-place, return it. */
+
+
+    if (IN_PLACE) {
+      return dirty;
+    }
+    /* Return sanitized string or DOM */
+
+
+    if (RETURN_DOM) {
+      if (RETURN_DOM_FRAGMENT) {
+        returnNode = createDocumentFragment.call(body.ownerDocument);
+
+        while (body.firstChild) {
+          // eslint-disable-next-line unicorn/prefer-dom-node-append
+          returnNode.appendChild(body.firstChild);
+        }
+      } else {
+        returnNode = body;
+      }
+
+      if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) {
+        /*
+          AdoptNode() is not used because internal state is not reset
+          (e.g. the past names map of a HTMLFormElement), this is safe
+          in theory but we would rather not risk another attack vector.
+          The state that is cloned by importNode() is explicitly defined
+          by the specs.
+        */
+        returnNode = importNode.call(originalDocument, returnNode, true);
+      }
+
+      return returnNode;
+    }
+
+    let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML;
+    /* Serialize doctype if allowed */
+
+    if (WHOLE_DOCUMENT && ALLOWED_TAGS['!doctype'] && body.ownerDocument && body.ownerDocument.doctype && body.ownerDocument.doctype.name && regExpTest(DOCTYPE_NAME, body.ownerDocument.doctype.name)) {
+      serializedHTML = '<!DOCTYPE ' + body.ownerDocument.doctype.name + '>\n' + serializedHTML;
+    }
+    /* Sanitize final string template-safe */
+
+
+    if (SAFE_FOR_TEMPLATES) {
+      serializedHTML = stringReplace(serializedHTML, MUSTACHE_EXPR, ' ');
+      serializedHTML = stringReplace(serializedHTML, ERB_EXPR, ' ');
+      serializedHTML = stringReplace(serializedHTML, TMPLIT_EXPR, ' ');
+    }
+
+    return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML;
+  };
+  /**
+   * Public method to set the configuration once
+   * setConfig
+   *
+   * @param {Object} cfg configuration object
+   */
+
+
+  DOMPurify.setConfig = function (cfg) {
+    _parseConfig(cfg);
+
+    SET_CONFIG = true;
+  };
+  /**
+   * Public method to remove the configuration
+   * clearConfig
+   *
+   */
+
+
+  DOMPurify.clearConfig = function () {
+    CONFIG = null;
+    SET_CONFIG = false;
+  };
+  /**
+   * Public method to check if an attribute value is valid.
+   * Uses last set config, if any. Otherwise, uses config defaults.
+   * isValidAttribute
+   *
+   * @param  {string} tag Tag name of containing element.
+   * @param  {string} attr Attribute name.
+   * @param  {string} value Attribute value.
+   * @return {Boolean} Returns true if `value` is valid. Otherwise, returns false.
+   */
+
+
+  DOMPurify.isValidAttribute = function (tag, attr, value) {
+    /* Initialize shared config vars if necessary. */
+    if (!CONFIG) {
+      _parseConfig({});
+    }
+
+    const lcTag = transformCaseFunc(tag);
+    const lcName = transformCaseFunc(attr);
+    return _isValidAttribute(lcTag, lcName, value);
+  };
+  /**
+   * AddHook
+   * Public method to add DOMPurify hooks
+   *
+   * @param {String} entryPoint entry point for the hook to add
+   * @param {Function} hookFunction function to execute
+   */
+
+
+  DOMPurify.addHook = function (entryPoint, hookFunction) {
+    if (typeof hookFunction !== 'function') {
+      return;
+    }
+
+    hooks[entryPoint] = hooks[entryPoint] || [];
+    arrayPush(hooks[entryPoint], hookFunction);
+  };
+  /**
+   * RemoveHook
+   * Public method to remove a DOMPurify hook at a given entryPoint
+   * (pops it from the stack of hooks if more are present)
+   *
+   * @param {String} entryPoint entry point for the hook to remove
+   * @return {Function} removed(popped) hook
+   */
+
+
+  DOMPurify.removeHook = function (entryPoint) {
+    if (hooks[entryPoint]) {
+      return arrayPop(hooks[entryPoint]);
+    }
+  };
+  /**
+   * RemoveHooks
+   * Public method to remove all DOMPurify hooks at a given entryPoint
+   *
+   * @param  {String} entryPoint entry point for the hooks to remove
+   */
+
+
+  DOMPurify.removeHooks = function (entryPoint) {
+    if (hooks[entryPoint]) {
+      hooks[entryPoint] = [];
+    }
+  };
+  /**
+   * RemoveAllHooks
+   * Public method to remove all DOMPurify hooks
+   *
+   */
+
+
+  DOMPurify.removeAllHooks = function () {
+    hooks = {};
+  };
+
+  return DOMPurify;
+}
+
+var purify = createDOMPurify();
+
+function createCheckbox$1(name, initialState) {
+    const container = div({class: 'igv-ui-trackgear-popover-check-container'});
+    const svg = iconMarkup('check', (true === initialState ? '#444' : 'transparent'));
+    svg.style.borderColor = 'gray';
+    svg.style.borderWidth = '1px';
+    svg.style.borderStyle = 'solid';
+
+    container.appendChild(svg);
+    let label = div(); //{ class: 'igv-some-label-class' });
+    label.textContent = name;
+    container.appendChild(label);
+
+    return container;
+}
+
+function createIcon(name, color) {
+    return iconMarkup(name, color);
+}
+
+function iconMarkup(name, color) {
+    color = color || "currentColor";
+    let icon = icons[name];
+    if (!icon) {
+        console.error(`No icon named: ${name}`);
+        icon = icons["question"];
+    }
+
+    const svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
+    svg.setAttributeNS(null,'viewBox', '0 0 ' + icon[0] + ' ' + icon[1]);
+    const path = document.createElementNS("http://www.w3.org/2000/svg", "path");
+    path.setAttributeNS(null,'fill',  color );
+    path.setAttributeNS(null,'d', icon[4]);
+    svg.appendChild(path);
+    return svg;
+}
+
+const icons = {
+    "check": [512, 512, [], "f00c", "M173.898 439.404l-166.4-166.4c-9.997-9.997-9.997-26.206 0-36.204l36.203-36.204c9.997-9.998 26.207-9.998 36.204 0L192 312.69 432.095 72.596c9.997-9.997 26.207-9.997 36.204 0l36.203 36.204c9.997 9.997 9.997 26.206 0 36.204l-294.4 294.401c-9.998 9.997-26.207 9.997-36.204-.001z"],
+    "cog": [512, 512, [], "f013", "M444.788 291.1l42.616 24.599c4.867 2.809 7.126 8.618 5.459 13.985-11.07 35.642-29.97 67.842-54.689 94.586a12.016 12.016 0 0 1-14.832 2.254l-42.584-24.595a191.577 191.577 0 0 1-60.759 35.13v49.182a12.01 12.01 0 0 1-9.377 11.718c-34.956 7.85-72.499 8.256-109.219.007-5.49-1.233-9.403-6.096-9.403-11.723v-49.184a191.555 191.555 0 0 1-60.759-35.13l-42.584 24.595a12.016 12.016 0 0 1-14.832-2.254c-24.718-26.744-43.619-58.944-54.689-94.586-1.667-5.366.592-11.175 5.459-13.985L67.212 291.1a193.48 193.48 0 0 1 0-70.199l-42.616-24.599c-4.867-2.809-7.126-8.618-5.459-13.985 11.07-35.642 29.97-67.842 54.689-94.586a12.016 12.016 0 0 1 14.832-2.254l42.584 24.595a191.577 191.577 0 0 1 60.759-35.13V25.759a12.01 12.01 0 0 1 9.377-11.718c34.956-7.85 72.499-8.256 109.219-.007 5.49 1.233 9.403 6.096 9.403 11.723v49.184a191.555 191.555 0 0 1 60.759 35.13l42.584-24.595a12.016 12.016 0 0 1 14.832 2.254c24.718 26.744 43.619 58.944 54.689 94.586 1.667 5.366-.592 11.175-5.459 13.985L444.788 220.9a193.485 193.485 0 0 1 0 70.2zM336 256c0-44.112-35.888-80-80-80s-80 35.888-80 80 35.888 80 80 80 80-35.888 80-80z"],
+    "exclamation": [192, 512, [], "f12a", "M176 432c0 44.112-35.888 80-80 80s-80-35.888-80-80 35.888-80 80-80 80 35.888 80 80zM25.26 25.199l13.6 272C39.499 309.972 50.041 320 62.83 320h66.34c12.789 0 23.331-10.028 23.97-22.801l13.6-272C167.425 11.49 156.496 0 142.77 0H49.23C35.504 0 24.575 11.49 25.26 25.199z"],
+    "exclamation-circle": [512, 512, [], "f06a", "M504 256c0 136.997-111.043 248-248 248S8 392.997 8 256C8 119.083 119.043 8 256 8s248 111.083 248 248zm-248 50c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z"],
+    "exclamation-triangle": [576, 512, [], "f071", "M569.517 440.013C587.975 472.007 564.806 512 527.94 512H48.054c-36.937 0-59.999-40.055-41.577-71.987L246.423 23.985c18.467-32.009 64.72-31.951 83.154 0l239.94 416.028zM288 354c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z"],
+    "minus": [448, 512, [], "f068", "M424 318.2c13.3 0 24-10.7 24-24v-76.4c0-13.3-10.7-24-24-24H24c-13.3 0-24 10.7-24 24v76.4c0 13.3 10.7 24 24 24h400z"],
+    "minus-circle": [512, 512, [], "f056", "M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zM124 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H124z"],
+    "minus-square": [448, 512, [], "f146", "M400 32H48C21.5 32 0 53.5 0 80v352c0 26.5 21.5 48 48 48h352c26.5 0 48-21.5 48-48V80c0-26.5-21.5-48-48-48zM92 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H92z"],
+    "plus": [448, 512, [], "f067", "M448 294.2v-76.4c0-13.3-10.7-24-24-24H286.2V56c0-13.3-10.7-24-24-24h-76.4c-13.3 0-24 10.7-24 24v137.8H24c-13.3 0-24 10.7-24 24v76.4c0 13.3 10.7 24 24 24h137.8V456c0 13.3 10.7 24 24 24h76.4c13.3 0 24-10.7 24-24V318.2H424c13.3 0 24-10.7 24-24z"],
+    "plus-circle": [512, 512, [], "f055", "M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm144 276c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92h-92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z"],
+    "plus-square": [448, 512, [], "f0fe", "M400 32H48C21.5 32 0 53.5 0 80v352c0 26.5 21.5 48 48 48h352c26.5 0 48-21.5 48-48V80c0-26.5-21.5-48-48-48zm-32 252c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92H92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z"],
+    "question": [384, 512, [], "f128", "M202.021 0C122.202 0 70.503 32.703 29.914 91.026c-7.363 10.58-5.093 25.086 5.178 32.874l43.138 32.709c10.373 7.865 25.132 6.026 33.253-4.148 25.049-31.381 43.63-49.449 82.757-49.449 30.764 0 68.816 19.799 68.816 49.631 0 22.552-18.617 34.134-48.993 51.164-35.423 19.86-82.299 44.576-82.299 106.405V320c0 13.255 10.745 24 24 24h72.471c13.255 0 24-10.745 24-24v-5.773c0-42.86 125.268-44.645 125.268-160.627C377.504 66.256 286.902 0 202.021 0zM192 373.459c-38.196 0-69.271 31.075-69.271 69.271 0 38.195 31.075 69.27 69.271 69.27s69.271-31.075 69.271-69.271-31.075-69.27-69.271-69.27z"],
+    "save": [448, 512, [], "f0c7", "M433.941 129.941l-83.882-83.882A48 48 0 0 0 316.118 32H48C21.49 32 0 53.49 0 80v352c0 26.51 21.49 48 48 48h352c26.51 0 48-21.49 48-48V163.882a48 48 0 0 0-14.059-33.941zM224 416c-35.346 0-64-28.654-64-64 0-35.346 28.654-64 64-64s64 28.654 64 64c0 35.346-28.654 64-64 64zm96-304.52V212c0 6.627-5.373 12-12 12H76c-6.627 0-12-5.373-12-12V108c0-6.627 5.373-12 12-12h228.52c3.183 0 6.235 1.264 8.485 3.515l3.48 3.48A11.996 11.996 0 0 1 320 111.48z"],
+    "search": [512, 512, [], "f002", "M505 442.7L405.3 343c-4.5-4.5-10.6-7-17-7H372c27.6-35.3 44-79.7 44-128C416 93.1 322.9 0 208 0S0 93.1 0 208s93.1 208 208 208c48.3 0 92.7-16.4 128-44v16.3c0 6.4 2.5 12.5 7 17l99.7 99.7c9.4 9.4 24.6 9.4 33.9 0l28.3-28.3c9.4-9.4 9.4-24.6.1-34zM208 336c-70.7 0-128-57.2-128-128 0-70.7 57.2-128 128-128 70.7 0 128 57.2 128 128 0 70.7-57.2 128-128 128z"],
+    "share": [512, 512, [], "f064", "M503.691 189.836L327.687 37.851C312.281 24.546 288 35.347 288 56.015v80.053C127.371 137.907 0 170.1 0 322.326c0 61.441 39.581 122.309 83.333 154.132 13.653 9.931 33.111-2.533 28.077-18.631C66.066 312.814 132.917 274.316 288 272.085V360c0 20.7 24.3 31.453 39.687 18.164l176.004-152c11.071-9.562 11.086-26.753 0-36.328z"],
+    "spinner": [512, 512, [], "f110", "M304 48c0 26.51-21.49 48-48 48s-48-21.49-48-48 21.49-48 48-48 48 21.49 48 48zm-48 368c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48-21.49-48-48-48zm208-208c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48-21.49-48-48-48zM96 256c0-26.51-21.49-48-48-48S0 229.49 0 256s21.49 48 48 48 48-21.49 48-48zm12.922 99.078c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48c0-26.509-21.491-48-48-48zm294.156 0c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48c0-26.509-21.49-48-48-48zM108.922 60.922c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48-21.491-48-48-48z"],
+    "square": [448, 512, [], "f0c8", "M400 32H48C21.5 32 0 53.5 0 80v352c0 26.5 21.5 48 48 48h352c26.5 0 48-21.5 48-48V80c0-26.5-21.5-48-48-48z"],
+    "square-full": [512, 512, [], "f45c", "M512 512H0V0h512v512z"],
+    "times": [384, 512, [], "f00d", "M323.1 441l53.9-53.9c9.4-9.4 9.4-24.5 0-33.9L279.8 256l97.2-97.2c9.4-9.4 9.4-24.5 0-33.9L323.1 71c-9.4-9.4-24.5-9.4-33.9 0L192 168.2 94.8 71c-9.4-9.4-24.5-9.4-33.9 0L7 124.9c-9.4 9.4-9.4 24.5 0 33.9l97.2 97.2L7 353.2c-9.4 9.4-9.4 24.5 0 33.9L60.9 441c9.4 9.4 24.5 9.4 33.9 0l97.2-97.2 97.2 97.2c9.3 9.3 24.5 9.3 33.9 0z"],
+    "times-circle": [512, 512, [], "f057", "M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm121.6 313.1c4.7 4.7 4.7 12.3 0 17L338 377.6c-4.7 4.7-12.3 4.7-17 0L256 312l-65.1 65.6c-4.7 4.7-12.3 4.7-17 0L134.4 338c-4.7-4.7-4.7-12.3 0-17l65.6-65-65.6-65.1c-4.7-4.7-4.7-12.3 0-17l39.6-39.6c4.7-4.7 12.3-4.7 17 0l65 65.7 65.1-65.6c4.7-4.7 12.3-4.7 17 0l39.6 39.6c4.7 4.7 4.7 12.3 0 17L312 256l65.6 65.1z"],
+    "wrench": [512, 512, [], "f0ad", "M481.156 200c9.3 0 15.12 10.155 10.325 18.124C466.295 259.992 420.419 288 368 288c-79.222 0-143.501-63.974-143.997-143.079C223.505 65.469 288.548-.001 368.002 0c52.362.001 98.196 27.949 123.4 69.743C496.24 77.766 490.523 88 481.154 88H376l-40 56 40 56h105.156zm-171.649 93.003L109.255 493.255c-24.994 24.993-65.515 24.994-90.51 0-24.993-24.994-24.993-65.516 0-90.51L218.991 202.5c16.16 41.197 49.303 74.335 90.516 90.503zM104 432c0-13.255-10.745-24-24-24s-24 10.745-24 24 10.745 24 24 24 24-10.745 24-24z"],
+};
+
+var icons$1 = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    createCheckbox: createCheckbox$1,
+    createIcon: createIcon
+});
+
+function attachDialogCloseHandlerWithParent(parent, closeHandler) {
+
+    var container = document.createElement("div");
+    parent.appendChild(container);
+    container.appendChild(createIcon("times"));
+    container.addEventListener('click', function (e) {
+        e.preventDefault();
+        e.stopPropagation();
+        closeHandler();
+    });
+}
+
+var uiUtils = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    attachDialogCloseHandlerWithParent: attachDialogCloseHandlerWithParent
+});
+
+/**
+ * Make the target element movable by clicking and dragging on the handle.  This is not a general purprose function,
+ * it makes several options specific to igv dialogs, the primary one being that the
+ * target is absolutely positioned in pixel coordinates
+
+ */
+
+let dragData;  // Its assumed we are only dragging one element at a time.
+
+function makeDraggable(target, handle, constraint) {
+
+    handle.addEventListener('mousedown', dragStart.bind(target));
+
+    function dragStart(event) {
+
+        event.stopPropagation();
+        event.preventDefault();
+
+        const dragFunction = drag.bind(this);
+        const dragEndFunction = dragEnd.bind(this);
+        const computedStyle = getComputedStyle(this);
+
+        dragData =
+            {
+                constraint,
+                dragFunction,
+                dragEndFunction,
+                screenX: event.screenX,
+                screenY: event.screenY,
+                top: parseInt(computedStyle.top.replace("px", "")),
+                left: parseInt(computedStyle.left.replace("px", ""))
+            };
+
+        document.addEventListener('mousemove', dragFunction);
+        document.addEventListener('mouseup', dragEndFunction);
+        document.addEventListener('mouseleave', dragEndFunction);
+        document.addEventListener('mouseexit', dragEndFunction);
+    }
+}
+
+function drag(event) {
+
+    if (!dragData) {
+        console.error("No drag data!");
+        return;
+    }
+    event.stopPropagation();
+    event.preventDefault();
+    const dx = event.screenX - dragData.screenX;
+    const dy = event.screenY - dragData.screenY;
+
+    const left = dragData.left + dx;
+    const  top = dragData.constraint ? Math.max(dragData.constraint.minY, dragData.top  + dy) : dragData.top  + dy;
+
+    this.style.left = `${ left }px`;
+    this.style.top  = `${  top }px`;
+}
+
+function dragEnd(event) {
+
+    if (!dragData) {
+        console.error("No drag data!");
+        return;
+    }
+    event.stopPropagation();
+    event.preventDefault();
+
+    const dragFunction = dragData.dragFunction;
+    const dragEndFunction = dragData.dragEndFunction;
+    document.removeEventListener('mousemove', dragFunction);
+    document.removeEventListener('mouseup', dragEndFunction);
+    document.removeEventListener('mouseleave', dragEndFunction);
+    document.removeEventListener('mouseexit', dragEndFunction);
+    dragData = undefined;
+}
+
+const httpMessages =
+    {
+        "401": "Access unauthorized",
+        "403": "Access forbidden",
+        "404": "Not found"
+    };
+
+
+class AlertDialog {
+    /**
+     * Initialize a new alert dialog
+     * @param parent
+     * @param alertProps - Optional - properties such as scroll to error
+     */
+    constructor(parent, alertProps) {
+        this.alertProps = Object.assign({
+            /** When an alert is presented - focus occur */
+            shouldFocus: true,
+            /** When focus occur - scroll into that element in the view */
+            preventScroll: false
+        }, alertProps);
+
+        // container
+        this.container = div({class: "igv-ui-alert-dialog-container"});
+        parent.appendChild(this.container);
+        this.container.setAttribute('tabIndex', '-1');
+
+        // header
+        const header = div();
+        this.container.appendChild(header);
+
+        this.errorHeadline = div();
+        header.appendChild(this.errorHeadline);
+        this.errorHeadline.textContent = '';
+
+        // body container
+        let bodyContainer = div({class: 'igv-ui-alert-dialog-body'});
+        this.container.appendChild(bodyContainer);
+
+        // body copy
+        this.body = div({class: 'igv-ui-alert-dialog-body-copy'});
+        bodyContainer.appendChild(this.body);
+
+        // ok container
+        let ok_container = div();
+        this.container.appendChild(ok_container);
+
+        // ok
+        this.ok = div();
+        ok_container.appendChild(this.ok);
+        this.ok.textContent = 'OK';
+
+        const okHandler = () => {
+
+            if (typeof this.callback === 'function') {
+                this.callback("OK");
+                this.callback = undefined;
+            }
+            this.body.innerHTML = '';
+            hide(this.container);
+        };
+
+        this.ok.addEventListener('click', event => {
+
+            event.stopPropagation();
+
+            okHandler();
+        });
+
+        this.container.addEventListener('keypress', event => {
+
+            event.stopPropagation();
+
+            if ('Enter' === event.key) {
+                okHandler();
+            }
+        });
+
+        makeDraggable(this.container, header);
+
+        hide(this.container);
+    }
+
+    present(alert, callback) {
+
+        this.errorHeadline.textContent = alert.message ? 'ERROR' : '';
+        let string = alert.message || alert;
+
+        if (httpMessages.hasOwnProperty(string)) {
+            string = httpMessages[string];
+        }
+
+        const clean = purify.sanitize(string);
+
+        this.body.innerHTML = clean;
+        this.callback = callback;
+        show(this.container);
+        if (this.alertProps.shouldFocus) {
+            this.container.focus(
+                { preventScroll: this.alertProps.preventScroll }
+            );
+        }
+    }
+}
+
+class InputDialog {
+
+    constructor(parent) {
+
+        this.parent = parent;
+
+        // dialog container
+        this.container = div({class: 'igv-ui-generic-dialog-container'});
+        parent.appendChild(this.container);
+
+        // const { x, y, width, height } = this.container.getBoundingClientRect();
+        // console.log(`InputDialog - x ${ x } y ${ y } width ${ width } height ${ height }`)
+
+        // dialog header
+        const header = div({class: 'igv-ui-generic-dialog-header'});
+        this.container.appendChild(header);
+
+        // dialog label
+        this.label = div({class: 'igv-ui-generic-dialog-one-liner'});
+        this.container.appendChild(this.label);
+        this.label.text = 'Unlabeled';
+
+        // input container
+        this.input_container = div({class: 'igv-ui-generic-dialog-input'});
+        this.container.appendChild(this.input_container);
+        //
+        this.input = document.createElement("input");
+        this.input_container.appendChild(this.input);
+
+
+        // ok | cancel
+        const buttons = div({class: 'igv-ui-generic-dialog-ok-cancel'});
+        this.container.appendChild(buttons);
+
+        // ok
+        this.ok = div();
+        buttons.appendChild(this.ok);
+        this.ok.textContent = 'OK';
+
+        // cancel
+        this.cancel = div();
+        buttons.appendChild(this.cancel);
+        this.cancel.textContent = 'Cancel';
+
+        hide(this.container);
+
+        this.input.addEventListener('keyup', e => {
+            if (13 === e.keyCode) {
+                if (typeof this.callback === 'function') {
+                    this.callback(this.input.value);
+                    this.callback = undefined;
+                }
+                this.input.value = undefined;
+                hide(this.container);
+            }
+        });
+
+        this.ok.addEventListener('click', () => {
+            if (typeof this.callback === 'function') {
+                this.callback(this.input.value);
+                this.callback = undefined;
+            }
+            this.input.value = undefined;
+            hide(this.container);
+        });
+
+        const cancel = () => {
+            this.input.value = '';
+            hide(this.container);
+        };
+
+        this.cancel.addEventListener('click', cancel);
+
+        attachDialogCloseHandlerWithParent(header, cancel);
+        makeDraggable(this.container, header);
+
+    }
+
+    get value() {
+        return purify.sanitize(this.input.value)
+    }
+
+    present(options, e) {
+
+        this.label.textContent = options.label;
+        this.input.value = options.value;
+        this.callback = options.callback || options.click;
+
+        show(this.container);
+        this.clampLocation(e.clientX, e.clientY);
+
+    }
+
+    clampLocation(clientX, clientY) {
+
+        const {width: w, height: h} = this.container.getBoundingClientRect();
+        const wh = window.innerHeight;
+        const ww = window.innerWidth;
+
+        const y = Math.min(wh - h, clientY);
+        const x = Math.min(ww - w, clientX);
+        this.container.style.left = `${x}px`;
+        this.container.style.top = `${y}px`;
+
+    }
+}
+
+const appleCrayonPalette =
+    {
+        licorice: "#000000",
+        lead: "#1e1e1e",
+        tungsten: "#3a3a3a",
+        iron: "#545453",
+        steel: "#6e6e6e",
+        tin: "#878687",
+        nickel: "#888787",
+        aluminum: "#a09fa0",
+        magnesium: "#b8b8b8",
+        silver: "#d0d0d0",
+        mercury: "#e8e8e8",
+        snow: "#ffffff",
+        //
+        cayenne: "#891100",
+        mocha: "#894800",
+        aspargus: "#888501",
+        fern: "#458401",
+        clover: "#028401",
+        moss: "#018448",
+        teal: "#008688",
+        ocean: "#004a88",
+        midnight: "#001888",
+        eggplant: "#491a88",
+        plum: "#891e88",
+        maroon: "#891648",
+        //
+        maraschino: "#ff2101",
+        tangerine: "#ff8802",
+        lemon: "#fffa03",
+        lime: "#83f902",
+        spring: "#05f802",
+        seam_foam: "#03f987",
+        turquoise: "#00fdff",
+        aqua: "#008cff",
+        blueberry: "#002eff",
+        grape: "#8931ff",
+        magenta: "#ff39ff",
+        strawberry: "#ff2987",
+        //
+        salmon: "#ff726e",
+        cantaloupe: "#ffce6e",
+        banana: "#fffb6d",
+        honeydew: "#cefa6e",
+        flora: "#68f96e",
+        spindrift: "#68fbd0",
+        ice: "#68fdff",
+        sky: "#6acfff",
+        orchid: "#6e76ff",
+        lavender: "#d278ff",
+        bubblegum: "#ff7aff",
+        carnation: "#ff7fd3"
+    };
+
+class GenericContainer {
+
+    constructor({parent,  top, left, width, height, border, closeHandler}) {
+
+        let container = div({class: 'igv-ui-generic-container'});
+        parent.appendChild(container);
+        hide(container);
+        this.container = container;
+
+        if(top !== undefined) {
+            this.container.style.top = `${ top }px`;
+        }
+        if(left !== undefined) {
+            this.container.style.left = `${ left }px`;
+        }
+        if (width !== undefined) {
+            this.container.style.width = `${ width }px`;
+        }
+        if (height !== undefined) {
+            this.container.style.height = `${ height }px`;
+        }
+        if(border) {
+            this.container.style.border = border;
+        }
+        //
+        // let bbox = parent.getBoundingClientRect();
+        // this.origin = {x: bbox.x, y: bbox.y};
+        // this.container.offset({left: this.origin.x, top: this.origin.y});
+
+        // header
+        const header = div();
+        this.container.appendChild(header);
+
+        // close button
+        attachDialogCloseHandlerWithParent(header, (e) => {
+            hide(this.container);
+            if(typeof closeHandler === "function") {
+                closeHandler(e);
+            }
+        });
+
+        makeDraggable(this.container, header);
+    }
+
+    show() {
+        show(this.container);
+    }
+
+    hide() {
+        hide(this.container);
+    }
+
+    dispose() {
+        if(this.container.parent)  {
+            this.container.parent.removeChild(this.container);
+        }
+    }
+}
+
+class ColorPicker extends GenericContainer {
+
+    constructor({parent, top, left, width, height, defaultColors, colorHandler}) {
+
+        super({ parent, top, left, width, height, border: '1px solid gray'});
+
+        createColorSwatchSelector(this.container, colorHandler, defaultColors);
+    }
+
+}
+
+const createColorSwatchSelector = (container, colorHandler, defaultColors) => {
+
+    const hexColorStrings = Object.values(appleCrayonPalette);
+
+    for (let hexColorString of hexColorStrings) {
+        const swatch = div({ class: 'igv-ui-color-swatch' });
+        container.appendChild(swatch);
+        decorateSwatch(swatch, hexColorString, colorHandler);
+    }
+
+    if (defaultColors) {
+        for (let hexColorString of defaultColors) {
+            const swatch = div({ class: 'igv-ui-color-swatch' });
+            container.appendChild(swatch);
+            decorateSwatch(swatch, hexColorString, colorHandler);
+        }
+    }
+
+};
+
+const decorateSwatch = (swatch, hexColorString, colorHandler) => {
+
+    swatch.style.backgroundColor = hexColorString;
+
+    swatch.addEventListener('mouseenter', e => swatch.style.borderColor = hexColorString);
+
+    swatch.addEventListener('mouseleave', e => swatch.style.borderColor = 'white');
+
+    swatch.addEventListener('click', event => {
+        event.stopPropagation();
+        colorHandler(hexColorString);
+    });
+
+    swatch.addEventListener('touchend', event => {
+        event.stopPropagation();
+        colorHandler(hexColorString);
+    });
+
+};
+
+class Popover {
+
+    constructor(parent, title) {
+
+        this.parent = parent;
+
+        // popover
+        this.popover = div({ class: "igv-ui-popover" });
+        parent.appendChild(this.popover);
+
+        // header
+        const popoverHeader = div();
+        this.popover.appendChild(popoverHeader);
+
+        const titleElement = div();
+        popoverHeader.appendChild(titleElement);
+        if (title) {
+            titleElement.textContent = title;
+        }
+
+        attachDialogCloseHandlerWithParent(popoverHeader,  () => this.hide());
+        makeDraggable(this.popover, popoverHeader);
+
+        // content
+        this.popoverContent = div();
+        this.popover.appendChild(this.popoverContent);
+
+        this.popover.style.display = 'none';
+
+
+    }
+
+    presentContentWithEvent(e, content) {
+
+        this.popover.style.display = 'block';
+
+        this.popoverContent.innerHTML = content;
+
+        present$1(e, this.popover, this.popoverContent);
+
+    }
+
+    presentMenu(e, menuItems) {
+
+        if (0 === menuItems.length) {
+            return
+        }
+
+        this.popover.style.display = 'block';
+
+        const menuElements = createMenuElements$1(menuItems, this.popover);
+        for (let item of menuElements) {
+            this.popoverContent.appendChild(item.object);
+        }
+
+        present$1(e, this.popover, this.popoverContent);
+    }
+
+    hide() {
+        this.popover.style.display = 'none';
+        this.dispose();
+    }
+
+    dispose() {
+
+        if (this.popover) {
+            this.popover.parentNode.removeChild(this.popover);
+        }
+
+        const keys = Object.keys(this);
+        for (let key of keys) {
+            this[ key ] = undefined;
+        }
+    }
+
+}
+
+function present$1(e, popover, popoverContent) {
+
+    const { x, y, width } = translateMouseCoordinates(e, popover.parentNode);
+    popover.style.top  = `${ y }px`;
+
+    const { width: w } = popover.getBoundingClientRect();
+
+    const xmax = x + w;
+    const delta = xmax - width;
+
+    popover.style.left = `${ xmax > width ? (x - delta) : x }px`;
+    popoverContent.style.maxWidth = `${ Math.min(w, width) }px`;
+
+
+}
+
+function createMenuElements$1(itemList, popover) {
+
+    const list  = itemList.map(function (item, i) {
+        let elem;
+
+        if (typeof item === 'string') {
+            elem = div();
+            elem.innerHTML = item;
+        } else if (typeof item === 'Node') {
+            elem = item;
+        } else {
+            if (typeof item.init === 'function') {
+                item.init();
+            }
+
+            if ("checkbox" === item.type) {
+                elem = createCheckbox$1("Show all bases", item.value);
+            } else if("color" === item.type) {
+                const colorPicker = new ColorPicker({
+                    parent: popover.parentElement,
+                    width: 364,
+                    //defaultColor: 'aqua',
+                    colorHandler: (color) => item.click(color)
+                });
+                elem = div();
+                if (typeof item.label === 'string') {
+                    elem.innerHTML = item.label;
+                }
+                const clickHandler =  e => {
+                    colorPicker.show();
+                    hide(popover);
+                    e.preventDefault();
+                    e.stopPropagation();
+                };
+                elem.addEventListener('click', clickHandler);
+                elem.addEventListener('touchend', clickHandler);
+                elem.addEventListener('mouseup', function (e) {
+                    e.preventDefault();
+                    e.stopPropagation();
+                });
+            }
+
+            else {
+                elem = div();
+                if (typeof item.label === 'string') {
+                    elem.innerHTML = item.label;
+                }
+            }
+
+            if (item.click && "color" !== item.type) {
+                elem.addEventListener('click', handleClick);
+                elem.addEventListener('touchend', handleClick);
+                elem.addEventListener('mouseup', function (e) {
+                    e.preventDefault();
+                    e.stopPropagation();
+                });
+
+                // eslint-disable-next-line no-inner-declarations
+                function handleClick(e) {
+                    item.click();
+                    hide(popover);
+                    e.preventDefault();
+                    e.stopPropagation();
+                }
+            }
+        }
+
+
+        return { object: elem, init: item.init };
+    });
+
+    return list;
+}
+
+class GenericColorPicker extends GenericContainer {
+
+    constructor({parent, width}) {
+        super({parent, width, border: '1px solid gray'});
+    }
+
+    configure(defaultColors, colorHandlers) {
+
+        this.colorHandlers = colorHandlers;
+
+        // active color handler defaults to handler with 'color' as key
+        this.setActiveColorHandler('color');
+
+        this.createSwatches(defaultColors);
+
+    }
+
+    setActiveColorHandler(option) {
+        this.activeColorHandler = this.colorHandlers[option];
+    }
+
+    createSwatches(defaultColors) {
+
+        this.container.querySelectorAll('.igv-ui-color-swatch').forEach(swatch => swatch.remove());
+
+        const hexColorStrings = Object.values(appleCrayonPalette);
+
+        for (let hexColorString of hexColorStrings) {
+            const swatch = div({class: 'igv-ui-color-swatch'});
+            this.container.appendChild(swatch);
+            this.decorateSwatch(swatch, hexColorString);
+        }
+
+        if (defaultColors) {
+            for (let hexColorString of defaultColors) {
+                const swatch = div({class: 'igv-ui-color-swatch'});
+                this.container.appendChild(swatch);
+                this.decorateSwatch(swatch, hexColorString);
+            }
+        }
+
+    }
+
+    decorateSwatch(swatch, hexColorString) {
+
+        swatch.style.backgroundColor = hexColorString;
+
+        swatch.addEventListener('mouseenter', () => swatch.style.borderColor = hexColorString);
+
+        swatch.addEventListener('mouseleave', () => swatch.style.borderColor = 'white');
+
+        swatch.addEventListener('click', event => {
+            event.stopPropagation();
+            this.activeColorHandler(hexColorString);
+        });
+
+        swatch.addEventListener('touchend', event => {
+            event.stopPropagation();
+            this.activeColorHandler(hexColorString);
+        });
+
+    }
+
+}
+
+function embedCSS$2() {
+    const style = document.createElement('style');
+    style.setAttribute('type', 'text/css');
+    style.setAttribute('title', 'igv-ui.css');
+    style.innerHTML = `.igv-ui-popover {
+  cursor: default;
+  position: absolute;
+  z-index: 2048;
+  border-color: #7F7F7F;
+  border-radius: 4px;
+  border-style: solid;
+  border-width: 1px;
+  font-family: "Open Sans", sans-serif;
+  font-size: small;
+  background-color: white;
+}
+.igv-ui-popover > div:first-child {
+  display: flex;
+  flex-direction: row;
+  flex-wrap: nowrap;
+  justify-content: space-between;
+  align-items: center;
+  width: 100%;
+  height: 24px;
+  cursor: move;
+  border-top-left-radius: 4px;
+  border-top-right-radius: 4px;
+  border-bottom-color: #7F7F7F;
+  border-bottom-style: solid;
+  border-bottom-width: thin;
+  background-color: #eee;
+}
+.igv-ui-popover > div:first-child > div:first-child {
+  margin-left: 4px;
+}
+.igv-ui-popover > div:first-child > div:last-child {
+  margin-right: 4px;
+  height: 12px;
+  width: 12px;
+  color: #7F7F7F;
+}
+.igv-ui-popover > div:first-child > div:last-child:hover {
+  cursor: pointer;
+  color: #444;
+}
+.igv-ui-popover > div:last-child {
+  overflow-y: auto;
+  overflow-x: hidden;
+  max-height: 400px;
+  max-width: 800px;
+  background-color: white;
+}
+.igv-ui-popover > div:last-child > div {
+  user-select: all;
+  margin-left: 4px;
+  margin-right: 4px;
+  min-width: 220px;
+  overflow-x: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+.igv-ui-popover > div:last-child > div > span {
+  font-weight: bolder;
+}
+.igv-ui-popover > div:last-child hr {
+  width: 100%;
+}
+
+.igv-ui-alert-dialog-container {
+  box-sizing: content-box;
+  position: absolute;
+  z-index: 2048;
+  top: 50%;
+  left: 50%;
+  width: 400px;
+  height: 200px;
+  border-color: #7F7F7F;
+  border-radius: 4px;
+  border-style: solid;
+  border-width: thin;
+  outline: none;
+  font-family: "Open Sans", sans-serif;
+  font-size: 15px;
+  font-weight: 400;
+  background-color: white;
+  display: flex;
+  flex-flow: column;
+  flex-wrap: nowrap;
+  justify-content: space-between;
+  align-items: center;
+}
+.igv-ui-alert-dialog-container > div:first-child {
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: flex-start;
+  align-items: center;
+  width: 100%;
+  height: 24px;
+  cursor: move;
+  border-top-left-radius: 4px;
+  border-top-right-radius: 4px;
+  border-bottom-color: #7F7F7F;
+  border-bottom-style: solid;
+  border-bottom-width: thin;
+  background-color: #eee;
+}
+.igv-ui-alert-dialog-container > div:first-child div:first-child {
+  padding-left: 8px;
+}
+.igv-ui-alert-dialog-container .igv-ui-alert-dialog-body {
+  -webkit-user-select: text;
+  -moz-user-select: text;
+  -ms-user-select: text;
+  user-select: text;
+  color: #373737;
+  width: 100%;
+  height: calc(100% - 24px - 64px);
+  overflow-y: scroll;
+}
+.igv-ui-alert-dialog-container .igv-ui-alert-dialog-body .igv-ui-alert-dialog-body-copy {
+  margin: 16px;
+  width: auto;
+  height: auto;
+  overflow-wrap: break-word;
+  word-break: break-word;
+  background-color: white;
+  border: unset;
+}
+.igv-ui-alert-dialog-container > div:last-child {
+  width: 100%;
+  margin-bottom: 10px;
+  background-color: white;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: center;
+  align-items: center;
+}
+.igv-ui-alert-dialog-container > div:last-child div {
+  margin: unset;
+  width: 40px;
+  height: 30px;
+  line-height: 30px;
+  text-align: center;
+  color: white;
+  font-family: "Open Sans", sans-serif;
+  font-size: small;
+  font-weight: 400;
+  border-color: #2B81AF;
+  border-style: solid;
+  border-width: thin;
+  border-radius: 4px;
+  background-color: #2B81AF;
+}
+.igv-ui-alert-dialog-container > div:last-child div:hover {
+  cursor: pointer;
+  border-color: #25597f;
+  background-color: #25597f;
+}
+
+.igv-ui-color-swatch {
+  position: relative;
+  box-sizing: content-box;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: wrap;
+  justify-content: center;
+  align-items: center;
+  width: 32px;
+  height: 32px;
+  border-style: solid;
+  border-width: 2px;
+  border-color: white;
+  border-radius: 4px;
+}
+
+.igv-ui-color-swatch:hover {
+  border-color: dimgray;
+}
+
+.igv-ui-colorpicker-menu-close-button {
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: flex-end;
+  align-items: center;
+  width: 100%;
+  height: 32px;
+  margin-top: 4px;
+  margin-bottom: 4px;
+  padding-right: 8px;
+}
+.igv-ui-colorpicker-menu-close-button i.fa {
+  display: block;
+  margin-left: 4px;
+  margin-right: 4px;
+  color: #5f5f5f;
+}
+.igv-ui-colorpicker-menu-close-button i.fa:hover,
+.igv-ui-colorpicker-menu-close-button i.fa:focus,
+.igv-ui-colorpicker-menu-close-button i.fa:active {
+  cursor: pointer;
+  color: #0f0f0f;
+}
+
+.igv-ui-generic-dialog-container {
+  box-sizing: content-box;
+  position: fixed;
+  top: 0;
+  left: 0;
+  width: 300px;
+  height: 200px;
+  border-color: #7F7F7F;
+  border-radius: 4px;
+  border-style: solid;
+  border-width: thin;
+  font-family: "Open Sans", sans-serif;
+  font-size: medium;
+  font-weight: 400;
+  z-index: 2048;
+  background-color: white;
+  display: flex;
+  flex-flow: column;
+  flex-wrap: nowrap;
+  justify-content: flex-start;
+  align-items: center;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header {
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: flex-end;
+  align-items: center;
+  width: 100%;
+  height: 24px;
+  cursor: move;
+  border-top-left-radius: 4px;
+  border-top-right-radius: 4px;
+  border-bottom-color: #7F7F7F;
+  border-bottom-style: solid;
+  border-bottom-width: thin;
+  background-color: #eee;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header div {
+  margin-right: 4px;
+  margin-bottom: 2px;
+  height: 12px;
+  width: 12px;
+  color: #7F7F7F;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header div:hover {
+  cursor: pointer;
+  color: #444;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-one-liner {
+  color: #373737;
+  width: 95%;
+  height: 24px;
+  line-height: 24px;
+  text-align: left;
+  margin-top: 8px;
+  padding-left: 8px;
+  overflow-wrap: break-word;
+  background-color: white;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input {
+  margin-top: 8px;
+  width: 95%;
+  height: 24px;
+  color: #373737;
+  line-height: 24px;
+  padding-left: 8px;
+  background-color: white;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: flex-start;
+  align-items: center;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input div {
+  width: 30%;
+  height: 100%;
+  font-size: 16px;
+  text-align: right;
+  padding-right: 8px;
+  background-color: white;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input input {
+  display: block;
+  height: 100%;
+  width: 100%;
+  padding-left: 4px;
+  font-family: "Open Sans", sans-serif;
+  font-weight: 400;
+  color: #373737;
+  text-align: left;
+  outline: none;
+  border-style: solid;
+  border-width: thin;
+  border-color: #7F7F7F;
+  background-color: white;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input input {
+  width: 50%;
+  font-size: 16px;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input {
+  margin-top: 8px;
+  width: calc(100% - 16px);
+  height: 24px;
+  color: #373737;
+  line-height: 24px;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: space-around;
+  align-items: center;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input input {
+  display: block;
+  height: 100%;
+  width: 100%;
+  padding-left: 4px;
+  font-family: "Open Sans", sans-serif;
+  font-weight: 400;
+  color: #373737;
+  text-align: left;
+  outline: none;
+  border-style: solid;
+  border-width: thin;
+  border-color: #7F7F7F;
+  background-color: white;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input input {
+  font-size: 16px;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel {
+  width: 100%;
+  height: 28px;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: space-around;
+  align-items: center;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div {
+  margin-top: 32px;
+  color: white;
+  font-family: "Open Sans", sans-serif;
+  font-size: 14px;
+  font-weight: 400;
+  width: 75px;
+  height: 28px;
+  line-height: 28px;
+  text-align: center;
+  border-color: transparent;
+  border-style: solid;
+  border-width: thin;
+  border-radius: 2px;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:first-child {
+  margin-left: 32px;
+  margin-right: 0;
+  background-color: #5ea4e0;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:last-child {
+  margin-left: 0;
+  margin-right: 32px;
+  background-color: #c4c4c4;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:first-child:hover {
+  cursor: pointer;
+  background-color: #3b5c7f;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:last-child:hover {
+  cursor: pointer;
+  background-color: #7f7f7f;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok {
+  width: 100%;
+  height: 36px;
+  margin-top: 32px;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: space-around;
+  align-items: center;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok div {
+  width: 98px;
+  height: 36px;
+  line-height: 36px;
+  text-align: center;
+  color: white;
+  font-family: "Open Sans", sans-serif;
+  font-size: medium;
+  font-weight: 400;
+  border-color: white;
+  border-style: solid;
+  border-width: thin;
+  border-radius: 4px;
+  background-color: #2B81AF;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok div:hover {
+  cursor: pointer;
+  background-color: #25597f;
+}
+
+.igv-ui-generic-container {
+  box-sizing: content-box;
+  position: absolute;
+  z-index: 2048;
+  background-color: white;
+  cursor: pointer;
+  display: flex;
+  flex-direction: row;
+  flex-wrap: wrap;
+  justify-content: flex-start;
+  align-items: center;
+}
+.igv-ui-generic-container > div:first-child {
+  cursor: move;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: flex-end;
+  align-items: center;
+  height: 24px;
+  width: 100%;
+  background-color: #dddddd;
+}
+.igv-ui-generic-container > div:first-child > div {
+  display: block;
+  color: #5f5f5f;
+  cursor: pointer;
+  width: 14px;
+  height: 14px;
+  margin-right: 8px;
+  margin-bottom: 4px;
+}
+
+.igv-ui-dialog {
+  z-index: 2048;
+  position: fixed;
+  width: fit-content;
+  height: fit-content;
+  display: flex;
+  flex-flow: column;
+  flex-wrap: nowrap;
+  justify-content: flex-start;
+  background-color: white;
+  border-color: #7F7F7F;
+  border-radius: 4px;
+  border-style: solid;
+  border-width: thin;
+  font-family: "Open Sans", sans-serif;
+  font-size: medium;
+  font-weight: 400;
+}
+.igv-ui-dialog .igv-ui-dialog-header {
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: flex-end;
+  align-items: center;
+  width: 100%;
+  height: 24px;
+  cursor: move;
+  border-top-left-radius: 4px;
+  border-top-right-radius: 4px;
+  border-bottom-color: #7F7F7F;
+  border-bottom-style: solid;
+  border-bottom-width: thin;
+  background-color: #eee;
+}
+.igv-ui-dialog .igv-ui-dialog-header div {
+  margin-right: 4px;
+  margin-bottom: 2px;
+  height: 12px;
+  width: 12px;
+  color: #7F7F7F;
+}
+.igv-ui-dialog .igv-ui-dialog-header div:hover {
+  cursor: pointer;
+  color: #444;
+}
+.igv-ui-dialog .igv-ui-dialog-one-liner {
+  width: 95%;
+  height: 24px;
+  line-height: 24px;
+  text-align: left;
+  margin: 8px;
+  overflow-wrap: break-word;
+  background-color: white;
+  font-weight: bold;
+}
+.igv-ui-dialog .igv-ui-dialog-ok-cancel {
+  width: 100%;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: space-around;
+  align-items: center;
+}
+.igv-ui-dialog .igv-ui-dialog-ok-cancel div {
+  margin: 16px;
+  margin-top: 32px;
+  color: white;
+  font-family: "Open Sans", sans-serif;
+  font-size: 14px;
+  font-weight: 400;
+  width: 75px;
+  height: 28px;
+  line-height: 28px;
+  text-align: center;
+  border-color: transparent;
+  border-style: solid;
+  border-width: thin;
+  border-radius: 2px;
+}
+.igv-ui-dialog .igv-ui-dialog-ok-cancel div:first-child {
+  background-color: #5ea4e0;
+}
+.igv-ui-dialog .igv-ui-dialog-ok-cancel div:last-child {
+  background-color: #c4c4c4;
+}
+.igv-ui-dialog .igv-ui-dialog-ok-cancel div:first-child:hover {
+  cursor: pointer;
+  background-color: #3b5c7f;
+}
+.igv-ui-dialog .igv-ui-dialog-ok-cancel div:last-child:hover {
+  cursor: pointer;
+  background-color: #7f7f7f;
+}
+.igv-ui-dialog .igv-ui-dialog-ok {
+  width: 100%;
+  height: 36px;
+  margin-top: 32px;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: space-around;
+  align-items: center;
+}
+.igv-ui-dialog .igv-ui-dialog-ok div {
+  width: 98px;
+  height: 36px;
+  line-height: 36px;
+  text-align: center;
+  color: white;
+  font-family: "Open Sans", sans-serif;
+  font-size: medium;
+  font-weight: 400;
+  border-color: white;
+  border-style: solid;
+  border-width: thin;
+  border-radius: 4px;
+  background-color: #2B81AF;
+}
+.igv-ui-dialog .igv-ui-dialog-ok div:hover {
+  cursor: pointer;
+  background-color: #25597f;
+}
+
+.igv-ui-panel, .igv-ui-panel-row, .igv-ui-panel-column {
+  z-index: 2048;
+  background-color: white;
+  font-family: "Open Sans", sans-serif;
+  font-size: medium;
+  font-weight: 400;
+  display: flex;
+  justify-content: flex-start;
+  align-items: flex-start;
+}
+
+.igv-ui-panel-column {
+  display: flex;
+  flex-direction: column;
+}
+
+.igv-ui-panel-row {
+  display: flex;
+  flex-direction: row;
+}
+
+.igv-ui-textbox {
+  background-color: white;
+  font-family: "Open Sans", sans-serif;
+  font-size: medium;
+  font-weight: 400;
+  display: flex;
+  justify-content: flex-start;
+  align-items: flex-start;
+}
+
+.igv-ui-table {
+  background-color: white;
+}
+
+.igv-ui-table thead {
+  position: sticky;
+  top: 0;
+}
+
+.igv-ui-table th {
+  text-align: left;
+}
+
+.igv-ui-table td {
+  padding-right: 20px;
+}
+
+.igv-ui-table tr:hover {
+  background-color: lightblue;
+}
+
+/*# sourceMappingURL=igv-ui.css.map */
+`;
+    document.head.append(style);
+}
+
+if (typeof document !== 'undefined') {
+
+    if (!stylesheetExists("igv-ui.css")) {
+        embedCSS$2();
+    }
+
+    function stylesheetExists(stylesheetName) {
+        for (let ss of document.styleSheets) {
+            ss = ss.href ? ss.href.replace(/^.*[\\\/]/, '') : '';
+            if (ss === stylesheetName) {
+                return true
+            }
+        }
+        return false
+    }
+}
+
+function createCheckbox(name, initialState) {
+
+    const container = domUtils.div({class: 'igv-menu-popup-check-container'});
+
+    const div = domUtils.div();
+    container.appendChild(div);
+
+    const svg = icons$1.createIcon('check', (true === initialState ? '#444' : 'transparent'));
+    div.appendChild(svg);
+
+    const label = domUtils.div();
+    label.innerText = name;
+    container.appendChild(label);
+
+    return container
+}
+
+/**
+ * Configure item list for track "gear" menu.
+ * @param trackView
+ */
+const MenuUtils = {
+
+    trackMenuItemList: function (trackView) {
+
+        const vizWindowTypes = new Set(['alignment', 'annotation', 'variant', 'eqtl', 'snp']);
+
+        const hasVizWindow = trackView.track.config && trackView.track.config.visibilityWindow !== undefined;
+
+        let menuItems = [];
+
+        if (trackView.track.config.type !== 'sequence') {
+            menuItems.push(trackRenameMenuItem(trackView));
+            menuItems.push(trackHeightMenuItem(trackView));
+        }
+
+        if (this.showColorPicker(trackView.track)) {
+            menuItems.push('<hr/>');
+            menuItems.push(colorPickerMenuItem({trackView, label: "Set track color", option: "color"}));
+            menuItems.push(unsetColorMenuItem({trackView, label: "Unset track color"}));
+           if(trackView.track.config.type === 'wig' || trackView.track.config.type === 'annotation') {
+               menuItems.push(colorPickerMenuItem({trackView, label: "Set alt color", option: "altColor"}));
+               menuItems.push(unsetAltColorMenuItem({trackView, label: "Unset alt color"}));
+           }
+        }
+
+        if (trackView.track.menuItemList) {
+            menuItems = menuItems.concat(trackView.track.menuItemList());
+        }
+
+        if (hasVizWindow || vizWindowTypes.has(trackView.track.type)) {
+            menuItems.push('<hr/>');
+            menuItems.push(visibilityWindowMenuItem(trackView));
+        }
+
+        if (trackView.track.removable !== false) {
+            menuItems.push('<hr/>');
+            menuItems.push(trackRemovalMenuItem(trackView));
+        }
+
+        return menuItems
+    },
+
+    numericDataMenuItems: function (trackView) {
+
+        const menuItems = [];
+
+        menuItems.push('<hr/>');
+
+        // Data range
+        const object = $$1('<div>');
+        object.text('Set data range');
+
+        const click = () => {
+            trackView.browser.dataRangeDialog.configure(trackView);
+            trackView.browser.dataRangeDialog.present($$1(trackView.browser.columnContainer));
+        };
+        menuItems.push({object, click});
+
+        if (trackView.track.logScale !== undefined) {
+            menuItems.push({
+                    object: $$1(createCheckbox("Log scale", trackView.track.logScale)),
+                    click: () => {
+                        trackView.track.logScale = !trackView.track.logScale;
+                        trackView.repaintViews();
+                    }
+                }
+            );
+        }
+
+        menuItems.push({
+                object: $$1(createCheckbox("Autoscale", trackView.track.autoscale)),
+                click: () => {
+                    trackView.track.autoscale = !trackView.track.autoscale;
+                    trackView.updateViews();
+                }
+            }
+        );
+
+
+        return menuItems
+    },
+
+    trackMenuItemListHelper: function (itemList, menuPopup) {
+
+        var list = [];
+
+        if (itemList.length > 0) {
+
+            list = itemList.map(function (item, i) {
+                var $e;
+
+                // name and object fields checked for backward compatibility
+                if (item.name) {
+                    $e = $$1('<div>');
+                    $e.text(item.name);
+                } else if (item.object) {
+                    $e = item.object;
+                } else if (typeof item.label === 'string') {
+                    $e = $$1('<div>');
+                    $e.html(item.label);
+                } else if (typeof item === 'string') {
+
+                    if (item.startsWith("<")) {
+                        $e = $$1(item);
+                    } else {
+                        $e = $$1("<div>" + item + "</div>");
+                    }
+                }
+
+                if (0 === i) {
+                    $e.addClass('igv-track-menu-border-top');
+                }
+
+                if (item.click) {
+                    $e.on('click', handleClick);
+                    $e.on('touchend', function (e) {
+                        handleClick(e);
+                    });
+                    $e.on('mouseup', function (e) {
+                        e.preventDefault();
+                        e.stopPropagation();
+                    });
+
+                    // eslint-disable-next-line no-inner-declarations
+                    function handleClick(e) {
+                        item.click(e);
+                        menuPopup.hide();
+                        e.preventDefault();
+                        e.stopPropagation();
+                    }
+                }
+
+                return {object: $e, init: (item.init || undefined)}
+            });
+        }
+
+        return list
+    },
+
+    showColorPicker(track) {
+        return (
+            undefined === track.type ||
+            "bedtype" === track.type ||
+            "alignment" === track.type ||
+            "annotation" === track.type ||
+            "variant" === track.type ||
+            "wig" === track.type) ||
+            'interact' === track.type
+    },
+
+    createMenuItem(label, action) {
+        const object = $$1('<div>');
+        object.text(label);
+        return {object, click: action}
+    }
+};
+
+
+function visibilityWindowMenuItem(trackView) {
+
+    const click = e => {
+
+        const callback = () => {
+
+            let value = trackView.browser.inputDialog.value;
+            value = '' === value || undefined === value ? -1 : value.trim();
+
+            trackView.track.visibilityWindow = Number.parseInt(value);
+            trackView.track.config.visibilityWindow = Number.parseInt(value);
+
+            trackView.updateViews();
+        };
+
+        const config =
+            {
+                label: 'Visibility Window',
+                value: (trackView.track.visibilityWindow),
+                callback
+            };
+        trackView.browser.inputDialog.present(config, e);
+
+    };
+
+    const object = $$1('<div>');
+    object.text('Set visibility window');
+    return {object, click}
+
+}
+
+function trackRemovalMenuItem(trackView) {
+
+    const object = $$1('<div>');
+    object.text('Remove track');
+
+    return {object, click: () => trackView.browser.removeTrack(trackView.track)}
+
+}
+
+function colorPickerMenuItem({trackView, label, option}) {
+
+    const $e = $$1('<div>');
+    $e.text(label);
+
+    return {
+        object: $e,
+        click: () => trackView.presentColorPicker(option)
+    }
+}
+
+function unsetColorMenuItem({trackView, label}) {
+
+    const $e = $$1('<div>');
+    $e.text(label);
+
+    return {
+        object: $e,
+        click: () => {
+            trackView.track.color = undefined;
+            trackView.repaintViews();
+        }
+    }
+}
+
+function unsetAltColorMenuItem({trackView, label}) {
+
+    const $e = $$1('<div>');
+    $e.text(label);
+
+    return {
+        object: $e,
+        click: () => {
+            trackView.track.altColor = undefined;
+            trackView.repaintViews();
+        }
+    }
+}
+
+function trackRenameMenuItem(trackView) {
+
+    const click = e => {
+
+        const callback = function () {
+            let value = trackView.browser.inputDialog.value;
+            value = ('' === value || undefined === value) ? 'untitled' : value.trim();
+            trackView.track.name = value;
+        };
+
+        const config =
+            {
+                label: 'Track Name',
+                value: (getTrackLabelText(trackView.track) || 'unnamed'),
+                callback
+            };
+
+        trackView.browser.inputDialog.present(config, e);
+
+    };
+
+    const object = $$1('<div>');
+    object.text('Set track name');
+    return {object, click}
+
+
+}
+
+function trackHeightMenuItem(trackView) {
+
+    const click = e => {
+
+        const callback = () => {
+
+            const number = Number(trackView.browser.inputDialog.value, 10);
+
+            if (undefined !== number) {
+
+                // If explicitly setting the height adust min or max, if neccessary.
+                if (trackView.track.minHeight !== undefined && trackView.track.minHeight > number) {
+                    trackView.track.minHeight = number;
+                }
+                if (trackView.track.maxHeight !== undefined && trackView.track.maxHeight < number) {
+                    trackView.track.minHeight = number;
+                }
+                trackView.setTrackHeight(number, true);
+
+                trackView.checkContentHeight();
+                trackView.repaintViews();
+
+
+                // Explicitly setting track height turns off autoHeight
+                trackView.track.autoHeight = false;
+            }
+
+        };
+
+        const config =
+            {
+                label: 'Track Height',
+                value: trackView.track.height,
+                callback
+            };
+
+        trackView.browser.inputDialog.present(config, e);
+
+    };
+
+    const object = $$1('<div>');
+    object.text('Set track height');
+    return {object, click}
+
+
+}
+
+function getTrackLabelText(track) {
+    var vp,
+        txt;
+
+    vp = track.trackView.viewports[0];
+    txt = vp.$trackLabel.text();
+
+    return txt
+}
+
+class DataRangeDialog {
+
+    constructor(browser, $parent, alert) {
+
+        this.browser = browser;
+
+        // dialog container
+        this.$container = $$1("<div>", {class: 'igv-generic-dialog-container'});
+        $parent.append(this.$container);
+        this.$container.offset({left: 0, top: 0});
+
+        // dialog header
+        const $header = $$1("<div>", {class: 'igv-generic-dialog-header'});
+        this.$container.append($header);
+        uiUtils.attachDialogCloseHandlerWithParent($header[0], () => {
+            this.$minimum_input.val(undefined);
+            this.$maximum_input.val(undefined);
+            this.$container.offset({left: 0, top: 0});
+            this.$container.hide();
+        });
+
+
+        // minimun
+        this.$minimum = $$1("<div>", {class: 'igv-generic-dialog-label-input'});
+        this.$container.append(this.$minimum);
+        const $mindiv = $$1('<div>');
+        $mindiv.text('Minimum');
+        this.$minimum.append($mindiv);
+        this.$minimum_input = $$1("<input>");
+        this.$minimum.append(this.$minimum_input);
+
+
+        // maximum
+        this.$maximum = $$1("<div>", {class: 'igv-generic-dialog-label-input'});
+        this.$container.append(this.$maximum);
+        const $maxdiv = $$1('<div>');
+        $maxdiv.text('Maximum');
+        this.$maximum.append($maxdiv);
+        this.$maximum_input = $$1("<input>");
+        this.$maximum.append(this.$maximum_input);
+
+        // ok | cancel
+        const $buttons = $$1("<div>", {class: 'igv-generic-dialog-ok-cancel'});
+        this.$container.append($buttons);
+
+        // ok
+        this.$ok = $$1("<div>");
+        $buttons.append(this.$ok);
+        this.$ok.text('OK');
+
+        // cancel
+        this.$cancel = $$1("<div>");
+        $buttons.append(this.$cancel);
+        this.$cancel.text('Cancel');
+
+        this.$cancel.on('click', () => {
+            this.$minimum_input.val(undefined);
+            this.$maximum_input.val(undefined);
+            this.$container.offset({left: 0, top: 0});
+            this.$container.hide();
+        });
+
+        //this.$container.draggable({ handle:$header.get(0) });
+        makeDraggable(this.$container.get(0), $header.get(0));
+
+        this.$container.hide();
+    }
+
+    configure(trackView) {
+
+        const dataRange = trackView.dataRange();
+        let min;
+        let max;
+        if (dataRange) {
+            min = dataRange.min;
+            max = dataRange.max;
+        } else {
+            min = 0;
+            max = 100;
+        }
+
+        this.$minimum_input.val(min);
+        this.$maximum_input.val(max);
+
+        this.$minimum_input.unbind();
+        this.$minimum_input.on('keyup', (e) => {
+            if (13 === e.keyCode) {
+                this.processResults(trackView);
+            }
+        });
+
+        this.$maximum_input.unbind();
+        this.$maximum_input.on('keyup', (e) => {
+            if (13 === e.keyCode) {
+                this.processResults(trackView);
+            }
+        });
+
+        this.$ok.unbind();
+        this.$ok.on('click', (e) => {
+            this.processResults(trackView);
+        });
+    }
+
+
+    processResults(trackView) {
+
+        const min = Number(this.$minimum_input.val());
+        const max = Number(this.$maximum_input.val());
+        if (isNaN(min) || isNaN(max)) {
+            this.browser.alert.present(new Error('Must input numeric values'), undefined);
+        } else {
+            trackView.setDataRange(min, max);
+        }
+
+        this.$minimum_input.val(undefined);
+        this.$maximum_input.val(undefined);
+        this.$container.offset({left: 0, top: 0});
+        this.$container.hide();
+    }
+
+    present($parent) {
+
+        const offset_top = $parent.offset().top;
+        const scroll_top = $$1('body').scrollTop();
+
+        this.$container.offset({left: $parent.width() - this.$container.width(), top: (offset_top + scroll_top)});
+        this.$container.show();
+    }
+}
+
+/**
+ * Covers string literals and String objects
+ * @param x
+ * @returns {boolean}
+ */
+function isString$2(x) {
+    return typeof x === "string" || x instanceof String
+}
+
+
+// StackOverflow: http://stackoverflow.com/a/10810674/116169
+function numberFormatter$1(rawNumber) {
+
+    var dec = String(rawNumber).split(/[.,]/),
+        sep = ',',
+        decsep = '.';
+
+    return dec[0].split('').reverse().reduce(function (prev, now, i) {
+        return i % 3 === 0 ? prev + sep + now : prev + now;
+    }).split('').reverse().join('') + (dec[1] ? decsep + dec[1] : '');
+}
+
+const splitLines$5 = function (string) {
+    return string.split(/\n|\r\n|\r/g);
+};
+
+
+function splitStringRespectingQuotes(string, delim) {
+
+    var tokens = [],
+        len = string.length,
+        i,
+        n = 0,
+        quote = false,
+        c;
+
+    if (len > 0) {
+
+        tokens[n] = string.charAt(0);
+        for (i = 1; i < len; i++) {
+            c = string.charAt(i);
+            if (c === '"') {
+                quote = !quote;
+            } else if (!quote && c === delim) {
+                n++;
+                tokens[n] = "";
+            } else {
+                tokens[n] += c;
+            }
+        }
+    }
+    return tokens;
+}
+
+function stripQuotes$1(str) {
+    if(str === undefined) {
+        return str;
+    }
+    if(str.startsWith("'") || str.startsWith('"')) {
+        str = str.substring(1);
+    }
+    if (str.endsWith("'") || str.endsWith('"')) {
+        str = str.substring(0, str.length - 1);
+    }
+    return str;
+}
+
+function capitalize(str) {
+    return str.length > 0 ? str.charAt(0).toUpperCase() + str.slice(1) : str;
+}
+
+
+/**
+ * Parse a locus string and return a range object.  Locus string is of the form chr:start-end.  End is optional
+ *
+ */
+function parseLocusString$1(string) {
+
+    const t1 = string.split(":");
+    const t2 = t1[1].split("-");
+
+    const range = {
+        chr: t1[0],
+        start: Number.parseInt(t2[0].replace(/,/g, '')) - 1
+    };
+
+    if (t2.length > 1) {
+        range.end = Number.parseInt(t2[1].replace(/,/g, ''));
+    } else {
+        range.end = range.start + 1;
+    }
+
+    return range;
+}
+
+/**
+ * Return the filename from the path.   Example
+ *   https://foo.com/bar.bed?param=2   => bar.bed
+ * @param urlOrFile
+ */
+
+function getFilename$2(urlOrFile) {
+
+    if (urlOrFile.name !== undefined) {
+        return urlOrFile.name
+    } else if (isString$2(urlOrFile)) {
+
+        let index = urlOrFile.lastIndexOf("/");
+        let filename = index < 0 ? urlOrFile : urlOrFile.substr(index + 1);
+
+        //Strip parameters -- handle local files later
+        index = filename.indexOf("?");
+        if (index > 0) {
+            filename = filename.substr(0, index);
+        }
+        return filename
+    } else {
+        throw Error(`Expected File or string, got ${typeof urlOrFile}`)
+    }
+}
+
+
+/**
+ * Test if object is a File or File-like object.
+ *
+ * @param object
+ */
+function isFile(object) {
+    if(!object) {
+        return false;
+    }
+    return typeof object !== 'function' &&
+        (object instanceof File ||
+            (object.hasOwnProperty("name") && typeof object.slice === 'function' && typeof object.arrayBuffer === 'function'))
+}
+
+function download(filename, data) {
+
+    const element = document.createElement('a');
+    element.setAttribute('href', data);
+    element.setAttribute('download', filename);
+    element.style.display = 'none';
+    document.body.appendChild(element);
+    element.click();
+    document.body.removeChild(element);
+}
+
+if (typeof process === 'object' && typeof window === 'undefined') {
+    global.atob = function (str) {
+        return Buffer.from(str, 'base64').toString('binary');
+    };
+}
+
+
+function parseUri(str) {
+
+    var o = options,
+        m = o.parser["loose"].exec(str),
+        uri = {},
+        i = 14;
+
+    while (i--) uri[o.key[i]] = m[i] || "";
+
+    uri[o.q.name] = {};
+    uri[o.key[12]].replace(o.q.parser, function ($0, $1, $2) {
+        if ($1) uri[o.q.name][$1] = $2;
+    });
+
+    return uri;
+}
+
+const options = {
+    strictMode: false,
+    key: ["source", "protocol", "authority", "userInfo", "user", "password", "host", "port", "relative", "path", "directory", "file", "query", "anchor"],
+    q: {
+        name: "queryKey",
+        parser: /(?:^|&)([^&=]*)=?([^&]*)/g
+    },
+    parser: {
+        strict: /^(?:([^:\/?#]+):)?(?:\/\/((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?))?((((?:[^?#\/]*\/)*)([^?#]*))(?:\?([^#]*))?(?:#(.*))?)/,
+        loose: /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/
+    }
+};
+
+/**
+ * Resolve a url, which might be a string, function (that returns a string or Promse), or Promise (that resolves to a string)
+ *
+ * @param url
+ * @returns {Promise<*>}
+ */
+async function resolveURL(url) {
+    return (typeof url === 'function')  ?  url() :  url;
+}
+
+/*! pako 2.1.0 https://github.com/nodeca/pako @license (MIT AND Zlib) */
+// (C) 1995-2013 Jean-loup Gailly and Mark Adler
+// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//   claim that you wrote the original software. If you use this software
+//   in a product, an acknowledgment in the product documentation would be
+//   appreciated but is not required.
+// 2. Altered source versions must be plainly marked as such, and must not be
+//   misrepresented as being the original software.
+// 3. This notice may not be removed or altered from any source distribution.
+
+/* eslint-disable space-unary-ops */
+
+/* Public constants ==========================================================*/
+/* ===========================================================================*/
+
+
+//const Z_FILTERED          = 1;
+//const Z_HUFFMAN_ONLY      = 2;
+//const Z_RLE               = 3;
+const Z_FIXED$1               = 4;
+//const Z_DEFAULT_STRATEGY  = 0;
+
+/* Possible values of the data_type field (though see inflate()) */
+const Z_BINARY              = 0;
+const Z_TEXT                = 1;
+//const Z_ASCII             = 1; // = Z_TEXT
+const Z_UNKNOWN$1             = 2;
+
+/*============================================================================*/
+
+
+function zero$1$1(buf) { let len = buf.length; while (--len >= 0) { buf[len] = 0; } }
+
+// From zutil.h
+
+const STORED_BLOCK = 0;
+const STATIC_TREES = 1;
+const DYN_TREES    = 2;
+/* The three kinds of block type */
+
+const MIN_MATCH$1$1    = 3;
+const MAX_MATCH$1$1    = 258;
+/* The minimum and maximum match lengths */
+
+// From deflate.h
+/* ===========================================================================
+ * Internal compression state.
+ */
+
+const LENGTH_CODES$1$1  = 29;
+/* number of length codes, not counting the special END_BLOCK code */
+
+const LITERALS$1$1      = 256;
+/* number of literal bytes 0..255 */
+
+const L_CODES$1$1       = LITERALS$1$1 + 1 + LENGTH_CODES$1$1;
+/* number of Literal or Length codes, including the END_BLOCK code */
+
+const D_CODES$1$1       = 30;
+/* number of distance codes */
+
+const BL_CODES$1      = 19;
+/* number of codes used to transfer the bit lengths */
+
+const HEAP_SIZE$1     = 2 * L_CODES$1$1 + 1;
+/* maximum heap size */
+
+const MAX_BITS$1      = 15;
+/* All codes must not exceed MAX_BITS bits */
+
+const Buf_size      = 16;
+/* size of bit buffer in bi_buf */
+
+
+/* ===========================================================================
+ * Constants
+ */
+
+const MAX_BL_BITS = 7;
+/* Bit length codes must not exceed MAX_BL_BITS bits */
+
+const END_BLOCK   = 256;
+/* end of block literal code */
+
+const REP_3_6     = 16;
+/* repeat previous bit length 3-6 times (2 bits of repeat count) */
+
+const REPZ_3_10   = 17;
+/* repeat a zero length 3-10 times  (3 bits of repeat count) */
+
+const REPZ_11_138 = 18;
+/* repeat a zero length 11-138 times  (7 bits of repeat count) */
+
+/* eslint-disable comma-spacing,array-bracket-spacing */
+const extra_lbits =   /* extra bits for each length code */
+  new Uint8Array([0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0]);
+
+const extra_dbits =   /* extra bits for each distance code */
+  new Uint8Array([0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13]);
+
+const extra_blbits =  /* extra bits for each bit length code */
+  new Uint8Array([0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7]);
+
+const bl_order =
+  new Uint8Array([16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]);
+/* eslint-enable comma-spacing,array-bracket-spacing */
+
+/* The lengths of the bit length codes are sent in order of decreasing
+ * probability, to avoid transmitting the lengths for unused bit length codes.
+ */
+
+/* ===========================================================================
+ * Local data. These are initialized only once.
+ */
+
+// We pre-fill arrays with 0 to avoid uninitialized gaps
+
+const DIST_CODE_LEN$1 = 512; /* see definition of array dist_code below */
+
+// !!!! Use flat array instead of structure, Freq = i*2, Len = i*2+1
+const static_ltree$1  = new Array((L_CODES$1$1 + 2) * 2);
+zero$1$1(static_ltree$1);
+/* The static literal tree. Since the bit lengths are imposed, there is no
+ * need for the L_CODES extra codes used during heap construction. However
+ * The codes 286 and 287 are needed to build a canonical tree (see _tr_init
+ * below).
+ */
+
+const static_dtree$1  = new Array(D_CODES$1$1 * 2);
+zero$1$1(static_dtree$1);
+/* The static distance tree. (Actually a trivial tree since all codes use
+ * 5 bits.)
+ */
+
+const _dist_code$1    = new Array(DIST_CODE_LEN$1);
+zero$1$1(_dist_code$1);
+/* Distance codes. The first 256 values correspond to the distances
+ * 3 .. 258, the last 256 values correspond to the top 8 bits of
+ * the 15 bit distances.
+ */
+
+const _length_code$1  = new Array(MAX_MATCH$1$1 - MIN_MATCH$1$1 + 1);
+zero$1$1(_length_code$1);
+/* length code for each normalized match length (0 == MIN_MATCH) */
+
+const base_length$1   = new Array(LENGTH_CODES$1$1);
+zero$1$1(base_length$1);
+/* First normalized length for each code (0 = MIN_MATCH) */
+
+const base_dist$1     = new Array(D_CODES$1$1);
+zero$1$1(base_dist$1);
+/* First normalized distance for each code (0 = distance of 1) */
+
+
+function StaticTreeDesc(static_tree, extra_bits, extra_base, elems, max_length) {
+
+  this.static_tree  = static_tree;  /* static tree or NULL */
+  this.extra_bits   = extra_bits;   /* extra bits for each code or NULL */
+  this.extra_base   = extra_base;   /* base index for extra_bits */
+  this.elems        = elems;        /* max number of elements in the tree */
+  this.max_length   = max_length;   /* max bit length for the codes */
+
+  // show if `static_tree` has data or dummy - needed for monomorphic objects
+  this.has_stree    = static_tree && static_tree.length;
+}
+
+
+let static_l_desc;
+let static_d_desc;
+let static_bl_desc;
+
+
+function TreeDesc(dyn_tree, stat_desc) {
+  this.dyn_tree = dyn_tree;     /* the dynamic tree */
+  this.max_code = 0;            /* largest code with non zero frequency */
+  this.stat_desc = stat_desc;   /* the corresponding static tree */
+}
+
+
+
+const d_code = (dist) => {
+
+  return dist < 256 ? _dist_code$1[dist] : _dist_code$1[256 + (dist >>> 7)];
+};
+
+
+/* ===========================================================================
+ * Output a short LSB first on the stream.
+ * IN assertion: there is enough room in pendingBuf.
+ */
+const put_short = (s, w) => {
+//    put_byte(s, (uch)((w) & 0xff));
+//    put_byte(s, (uch)((ush)(w) >> 8));
+  s.pending_buf[s.pending++] = (w) & 0xff;
+  s.pending_buf[s.pending++] = (w >>> 8) & 0xff;
+};
+
+
+/* ===========================================================================
+ * Send a value on a given number of bits.
+ * IN assertion: length <= 16 and value fits in length bits.
+ */
+const send_bits = (s, value, length) => {
+
+  if (s.bi_valid > (Buf_size - length)) {
+    s.bi_buf |= (value << s.bi_valid) & 0xffff;
+    put_short(s, s.bi_buf);
+    s.bi_buf = value >> (Buf_size - s.bi_valid);
+    s.bi_valid += length - Buf_size;
+  } else {
+    s.bi_buf |= (value << s.bi_valid) & 0xffff;
+    s.bi_valid += length;
+  }
+};
+
+
+const send_code = (s, c, tree) => {
+
+  send_bits(s, tree[c * 2]/*.Code*/, tree[c * 2 + 1]/*.Len*/);
+};
+
+
+/* ===========================================================================
+ * Reverse the first len bits of a code, using straightforward code (a faster
+ * method would use a table)
+ * IN assertion: 1 <= len <= 15
+ */
+const bi_reverse = (code, len) => {
+
+  let res = 0;
+  do {
+    res |= code & 1;
+    code >>>= 1;
+    res <<= 1;
+  } while (--len > 0);
+  return res >>> 1;
+};
+
+
+/* ===========================================================================
+ * Flush the bit buffer, keeping at most 7 bits in it.
+ */
+const bi_flush = (s) => {
+
+  if (s.bi_valid === 16) {
+    put_short(s, s.bi_buf);
+    s.bi_buf = 0;
+    s.bi_valid = 0;
+
+  } else if (s.bi_valid >= 8) {
+    s.pending_buf[s.pending++] = s.bi_buf & 0xff;
+    s.bi_buf >>= 8;
+    s.bi_valid -= 8;
+  }
+};
+
+
+/* ===========================================================================
+ * Compute the optimal bit lengths for a tree and update the total bit length
+ * for the current block.
+ * IN assertion: the fields freq and dad are set, heap[heap_max] and
+ *    above are the tree nodes sorted by increasing frequency.
+ * OUT assertions: the field len is set to the optimal bit length, the
+ *     array bl_count contains the frequencies for each bit length.
+ *     The length opt_len is updated; static_len is also updated if stree is
+ *     not null.
+ */
+const gen_bitlen = (s, desc) => {
+//    deflate_state *s;
+//    tree_desc *desc;    /* the tree descriptor */
+
+  const tree            = desc.dyn_tree;
+  const max_code        = desc.max_code;
+  const stree           = desc.stat_desc.static_tree;
+  const has_stree       = desc.stat_desc.has_stree;
+  const extra           = desc.stat_desc.extra_bits;
+  const base            = desc.stat_desc.extra_base;
+  const max_length      = desc.stat_desc.max_length;
+  let h;              /* heap index */
+  let n, m;           /* iterate over the tree elements */
+  let bits;           /* bit length */
+  let xbits;          /* extra bits */
+  let f;              /* frequency */
+  let overflow = 0;   /* number of elements with bit length too large */
+
+  for (bits = 0; bits <= MAX_BITS$1; bits++) {
+    s.bl_count[bits] = 0;
+  }
+
+  /* In a first pass, compute the optimal bit lengths (which may
+   * overflow in the case of the bit length tree).
+   */
+  tree[s.heap[s.heap_max] * 2 + 1]/*.Len*/ = 0; /* root of the heap */
+
+  for (h = s.heap_max + 1; h < HEAP_SIZE$1; h++) {
+    n = s.heap[h];
+    bits = tree[tree[n * 2 + 1]/*.Dad*/ * 2 + 1]/*.Len*/ + 1;
+    if (bits > max_length) {
+      bits = max_length;
+      overflow++;
+    }
+    tree[n * 2 + 1]/*.Len*/ = bits;
+    /* We overwrite tree[n].Dad which is no longer needed */
+
+    if (n > max_code) { continue; } /* not a leaf node */
+
+    s.bl_count[bits]++;
+    xbits = 0;
+    if (n >= base) {
+      xbits = extra[n - base];
+    }
+    f = tree[n * 2]/*.Freq*/;
+    s.opt_len += f * (bits + xbits);
+    if (has_stree) {
+      s.static_len += f * (stree[n * 2 + 1]/*.Len*/ + xbits);
+    }
+  }
+  if (overflow === 0) { return; }
+
+  // Tracev((stderr,"\nbit length overflow\n"));
+  /* This happens for example on obj2 and pic of the Calgary corpus */
+
+  /* Find the first bit length which could increase: */
+  do {
+    bits = max_length - 1;
+    while (s.bl_count[bits] === 0) { bits--; }
+    s.bl_count[bits]--;      /* move one leaf down the tree */
+    s.bl_count[bits + 1] += 2; /* move one overflow item as its brother */
+    s.bl_count[max_length]--;
+    /* The brother of the overflow item also moves one step up,
+     * but this does not affect bl_count[max_length]
+     */
+    overflow -= 2;
+  } while (overflow > 0);
+
+  /* Now recompute all bit lengths, scanning in increasing frequency.
+   * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all
+   * lengths instead of fixing only the wrong ones. This idea is taken
+   * from 'ar' written by Haruhiko Okumura.)
+   */
+  for (bits = max_length; bits !== 0; bits--) {
+    n = s.bl_count[bits];
+    while (n !== 0) {
+      m = s.heap[--h];
+      if (m > max_code) { continue; }
+      if (tree[m * 2 + 1]/*.Len*/ !== bits) {
+        // Tracev((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));
+        s.opt_len += (bits - tree[m * 2 + 1]/*.Len*/) * tree[m * 2]/*.Freq*/;
+        tree[m * 2 + 1]/*.Len*/ = bits;
+      }
+      n--;
+    }
+  }
+};
+
+
+/* ===========================================================================
+ * Generate the codes for a given tree and bit counts (which need not be
+ * optimal).
+ * IN assertion: the array bl_count contains the bit length statistics for
+ * the given tree and the field len is set for all tree elements.
+ * OUT assertion: the field code is set for all tree elements of non
+ *     zero code length.
+ */
+const gen_codes = (tree, max_code, bl_count) => {
+//    ct_data *tree;             /* the tree to decorate */
+//    int max_code;              /* largest code with non zero frequency */
+//    ushf *bl_count;            /* number of codes at each bit length */
+
+  const next_code = new Array(MAX_BITS$1 + 1); /* next code value for each bit length */
+  let code = 0;              /* running code value */
+  let bits;                  /* bit index */
+  let n;                     /* code index */
+
+  /* The distribution counts are first used to generate the code values
+   * without bit reversal.
+   */
+  for (bits = 1; bits <= MAX_BITS$1; bits++) {
+    code = (code + bl_count[bits - 1]) << 1;
+    next_code[bits] = code;
+  }
+  /* Check that the bit counts in bl_count are consistent. The last code
+   * must be all ones.
+   */
+  //Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
+  //        "inconsistent bit counts");
+  //Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
+
+  for (n = 0;  n <= max_code; n++) {
+    let len = tree[n * 2 + 1]/*.Len*/;
+    if (len === 0) { continue; }
+    /* Now reverse the bits */
+    tree[n * 2]/*.Code*/ = bi_reverse(next_code[len]++, len);
+
+    //Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
+    //     n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
+  }
+};
+
+
+/* ===========================================================================
+ * Initialize the various 'constant' tables.
+ */
+const tr_static_init = () => {
+
+  let n;        /* iterates over tree elements */
+  let bits;     /* bit counter */
+  let length;   /* length value */
+  let code;     /* code value */
+  let dist;     /* distance index */
+  const bl_count = new Array(MAX_BITS$1 + 1);
+  /* number of codes at each bit length for an optimal tree */
+
+  // do check in _tr_init()
+  //if (static_init_done) return;
+
+  /* For some embedded targets, global variables are not initialized: */
+/*#ifdef NO_INIT_GLOBAL_POINTERS
+  static_l_desc.static_tree = static_ltree;
+  static_l_desc.extra_bits = extra_lbits;
+  static_d_desc.static_tree = static_dtree;
+  static_d_desc.extra_bits = extra_dbits;
+  static_bl_desc.extra_bits = extra_blbits;
+#endif*/
+
+  /* Initialize the mapping length (0..255) -> length code (0..28) */
+  length = 0;
+  for (code = 0; code < LENGTH_CODES$1$1 - 1; code++) {
+    base_length$1[code] = length;
+    for (n = 0; n < (1 << extra_lbits[code]); n++) {
+      _length_code$1[length++] = code;
+    }
+  }
+  //Assert (length == 256, "tr_static_init: length != 256");
+  /* Note that the length 255 (match length 258) can be represented
+   * in two different ways: code 284 + 5 bits or code 285, so we
+   * overwrite length_code[255] to use the best encoding:
+   */
+  _length_code$1[length - 1] = code;
+
+  /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
+  dist = 0;
+  for (code = 0; code < 16; code++) {
+    base_dist$1[code] = dist;
+    for (n = 0; n < (1 << extra_dbits[code]); n++) {
+      _dist_code$1[dist++] = code;
+    }
+  }
+  //Assert (dist == 256, "tr_static_init: dist != 256");
+  dist >>= 7; /* from now on, all distances are divided by 128 */
+  for (; code < D_CODES$1$1; code++) {
+    base_dist$1[code] = dist << 7;
+    for (n = 0; n < (1 << (extra_dbits[code] - 7)); n++) {
+      _dist_code$1[256 + dist++] = code;
+    }
+  }
+  //Assert (dist == 256, "tr_static_init: 256+dist != 512");
+
+  /* Construct the codes of the static literal tree */
+  for (bits = 0; bits <= MAX_BITS$1; bits++) {
+    bl_count[bits] = 0;
+  }
+
+  n = 0;
+  while (n <= 143) {
+    static_ltree$1[n * 2 + 1]/*.Len*/ = 8;
+    n++;
+    bl_count[8]++;
+  }
+  while (n <= 255) {
+    static_ltree$1[n * 2 + 1]/*.Len*/ = 9;
+    n++;
+    bl_count[9]++;
+  }
+  while (n <= 279) {
+    static_ltree$1[n * 2 + 1]/*.Len*/ = 7;
+    n++;
+    bl_count[7]++;
+  }
+  while (n <= 287) {
+    static_ltree$1[n * 2 + 1]/*.Len*/ = 8;
+    n++;
+    bl_count[8]++;
+  }
+  /* Codes 286 and 287 do not exist, but we must include them in the
+   * tree construction to get a canonical Huffman tree (longest code
+   * all ones)
+   */
+  gen_codes(static_ltree$1, L_CODES$1$1 + 1, bl_count);
+
+  /* The static distance tree is trivial: */
+  for (n = 0; n < D_CODES$1$1; n++) {
+    static_dtree$1[n * 2 + 1]/*.Len*/ = 5;
+    static_dtree$1[n * 2]/*.Code*/ = bi_reverse(n, 5);
+  }
+
+  // Now data ready and we can init static trees
+  static_l_desc = new StaticTreeDesc(static_ltree$1, extra_lbits, LITERALS$1$1 + 1, L_CODES$1$1, MAX_BITS$1);
+  static_d_desc = new StaticTreeDesc(static_dtree$1, extra_dbits, 0,          D_CODES$1$1, MAX_BITS$1);
+  static_bl_desc = new StaticTreeDesc(new Array(0), extra_blbits, 0,         BL_CODES$1, MAX_BL_BITS);
+
+  //static_init_done = true;
+};
+
+
+/* ===========================================================================
+ * Initialize a new block.
+ */
+const init_block = (s) => {
+
+  let n; /* iterates over tree elements */
+
+  /* Initialize the trees. */
+  for (n = 0; n < L_CODES$1$1;  n++) { s.dyn_ltree[n * 2]/*.Freq*/ = 0; }
+  for (n = 0; n < D_CODES$1$1;  n++) { s.dyn_dtree[n * 2]/*.Freq*/ = 0; }
+  for (n = 0; n < BL_CODES$1; n++) { s.bl_tree[n * 2]/*.Freq*/ = 0; }
+
+  s.dyn_ltree[END_BLOCK * 2]/*.Freq*/ = 1;
+  s.opt_len = s.static_len = 0;
+  s.sym_next = s.matches = 0;
+};
+
+
+/* ===========================================================================
+ * Flush the bit buffer and align the output on a byte boundary
+ */
+const bi_windup = (s) =>
+{
+  if (s.bi_valid > 8) {
+    put_short(s, s.bi_buf);
+  } else if (s.bi_valid > 0) {
+    //put_byte(s, (Byte)s->bi_buf);
+    s.pending_buf[s.pending++] = s.bi_buf;
+  }
+  s.bi_buf = 0;
+  s.bi_valid = 0;
+};
+
+/* ===========================================================================
+ * Compares to subtrees, using the tree depth as tie breaker when
+ * the subtrees have equal frequency. This minimizes the worst case length.
+ */
+const smaller = (tree, n, m, depth) => {
+
+  const _n2 = n * 2;
+  const _m2 = m * 2;
+  return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ ||
+         (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m]));
+};
+
+/* ===========================================================================
+ * Restore the heap property by moving down the tree starting at node k,
+ * exchanging a node with the smallest of its two sons if necessary, stopping
+ * when the heap property is re-established (each father smaller than its
+ * two sons).
+ */
+const pqdownheap = (s, tree, k) => {
+//    deflate_state *s;
+//    ct_data *tree;  /* the tree to restore */
+//    int k;               /* node to move down */
+
+  const v = s.heap[k];
+  let j = k << 1;  /* left son of k */
+  while (j <= s.heap_len) {
+    /* Set j to the smallest of the two sons: */
+    if (j < s.heap_len &&
+      smaller(tree, s.heap[j + 1], s.heap[j], s.depth)) {
+      j++;
+    }
+    /* Exit if v is smaller than both sons */
+    if (smaller(tree, v, s.heap[j], s.depth)) { break; }
+
+    /* Exchange v with the smallest son */
+    s.heap[k] = s.heap[j];
+    k = j;
+
+    /* And continue down the tree, setting j to the left son of k */
+    j <<= 1;
+  }
+  s.heap[k] = v;
+};
+
+
+// inlined manually
+// const SMALLEST = 1;
+
+/* ===========================================================================
+ * Send the block data compressed using the given Huffman trees
+ */
+const compress_block = (s, ltree, dtree) => {
+//    deflate_state *s;
+//    const ct_data *ltree; /* literal tree */
+//    const ct_data *dtree; /* distance tree */
+
+  let dist;           /* distance of matched string */
+  let lc;             /* match length or unmatched char (if dist == 0) */
+  let sx = 0;         /* running index in sym_buf */
+  let code;           /* the code to send */
+  let extra;          /* number of extra bits to send */
+
+  if (s.sym_next !== 0) {
+    do {
+      dist = s.pending_buf[s.sym_buf + sx++] & 0xff;
+      dist += (s.pending_buf[s.sym_buf + sx++] & 0xff) << 8;
+      lc = s.pending_buf[s.sym_buf + sx++];
+      if (dist === 0) {
+        send_code(s, lc, ltree); /* send a literal byte */
+        //Tracecv(isgraph(lc), (stderr," '%c' ", lc));
+      } else {
+        /* Here, lc is the match length - MIN_MATCH */
+        code = _length_code$1[lc];
+        send_code(s, code + LITERALS$1$1 + 1, ltree); /* send the length code */
+        extra = extra_lbits[code];
+        if (extra !== 0) {
+          lc -= base_length$1[code];
+          send_bits(s, lc, extra);       /* send the extra length bits */
+        }
+        dist--; /* dist is now the match distance - 1 */
+        code = d_code(dist);
+        //Assert (code < D_CODES, "bad d_code");
+
+        send_code(s, code, dtree);       /* send the distance code */
+        extra = extra_dbits[code];
+        if (extra !== 0) {
+          dist -= base_dist$1[code];
+          send_bits(s, dist, extra);   /* send the extra distance bits */
+        }
+      } /* literal or match pair ? */
+
+      /* Check that the overlay between pending_buf and sym_buf is ok: */
+      //Assert(s->pending < s->lit_bufsize + sx, "pendingBuf overflow");
+
+    } while (sx < s.sym_next);
+  }
+
+  send_code(s, END_BLOCK, ltree);
+};
+
+
+/* ===========================================================================
+ * Construct one Huffman tree and assigns the code bit strings and lengths.
+ * Update the total bit length for the current block.
+ * IN assertion: the field freq is set for all tree elements.
+ * OUT assertions: the fields len and code are set to the optimal bit length
+ *     and corresponding code. The length opt_len is updated; static_len is
+ *     also updated if stree is not null. The field max_code is set.
+ */
+const build_tree = (s, desc) => {
+//    deflate_state *s;
+//    tree_desc *desc; /* the tree descriptor */
+
+  const tree     = desc.dyn_tree;
+  const stree    = desc.stat_desc.static_tree;
+  const has_stree = desc.stat_desc.has_stree;
+  const elems    = desc.stat_desc.elems;
+  let n, m;          /* iterate over heap elements */
+  let max_code = -1; /* largest code with non zero frequency */
+  let node;          /* new node being created */
+
+  /* Construct the initial heap, with least frequent element in
+   * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
+   * heap[0] is not used.
+   */
+  s.heap_len = 0;
+  s.heap_max = HEAP_SIZE$1;
+
+  for (n = 0; n < elems; n++) {
+    if (tree[n * 2]/*.Freq*/ !== 0) {
+      s.heap[++s.heap_len] = max_code = n;
+      s.depth[n] = 0;
+
+    } else {
+      tree[n * 2 + 1]/*.Len*/ = 0;
+    }
+  }
+
+  /* The pkzip format requires that at least one distance code exists,
+   * and that at least one bit should be sent even if there is only one
+   * possible code. So to avoid special checks later on we force at least
+   * two codes of non zero frequency.
+   */
+  while (s.heap_len < 2) {
+    node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0);
+    tree[node * 2]/*.Freq*/ = 1;
+    s.depth[node] = 0;
+    s.opt_len--;
+
+    if (has_stree) {
+      s.static_len -= stree[node * 2 + 1]/*.Len*/;
+    }
+    /* node is 0 or 1 so it does not have extra bits */
+  }
+  desc.max_code = max_code;
+
+  /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
+   * establish sub-heaps of increasing lengths:
+   */
+  for (n = (s.heap_len >> 1/*int /2*/); n >= 1; n--) { pqdownheap(s, tree, n); }
+
+  /* Construct the Huffman tree by repeatedly combining the least two
+   * frequent nodes.
+   */
+  node = elems;              /* next internal node of the tree */
+  do {
+    //pqremove(s, tree, n);  /* n = node of least frequency */
+    /*** pqremove ***/
+    n = s.heap[1/*SMALLEST*/];
+    s.heap[1/*SMALLEST*/] = s.heap[s.heap_len--];
+    pqdownheap(s, tree, 1/*SMALLEST*/);
+    /***/
+
+    m = s.heap[1/*SMALLEST*/]; /* m = node of next least frequency */
+
+    s.heap[--s.heap_max] = n; /* keep the nodes sorted by frequency */
+    s.heap[--s.heap_max] = m;
+
+    /* Create a new node father of n and m */
+    tree[node * 2]/*.Freq*/ = tree[n * 2]/*.Freq*/ + tree[m * 2]/*.Freq*/;
+    s.depth[node] = (s.depth[n] >= s.depth[m] ? s.depth[n] : s.depth[m]) + 1;
+    tree[n * 2 + 1]/*.Dad*/ = tree[m * 2 + 1]/*.Dad*/ = node;
+
+    /* and insert the new node in the heap */
+    s.heap[1/*SMALLEST*/] = node++;
+    pqdownheap(s, tree, 1/*SMALLEST*/);
+
+  } while (s.heap_len >= 2);
+
+  s.heap[--s.heap_max] = s.heap[1/*SMALLEST*/];
+
+  /* At this point, the fields freq and dad are set. We can now
+   * generate the bit lengths.
+   */
+  gen_bitlen(s, desc);
+
+  /* The field len is now set, we can generate the bit codes */
+  gen_codes(tree, max_code, s.bl_count);
+};
+
+
+/* ===========================================================================
+ * Scan a literal or distance tree to determine the frequencies of the codes
+ * in the bit length tree.
+ */
+const scan_tree = (s, tree, max_code) => {
+//    deflate_state *s;
+//    ct_data *tree;   /* the tree to be scanned */
+//    int max_code;    /* and its largest code of non zero frequency */
+
+  let n;                     /* iterates over all tree elements */
+  let prevlen = -1;          /* last emitted length */
+  let curlen;                /* length of current code */
+
+  let nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */
+
+  let count = 0;             /* repeat count of the current code */
+  let max_count = 7;         /* max repeat count */
+  let min_count = 4;         /* min repeat count */
+
+  if (nextlen === 0) {
+    max_count = 138;
+    min_count = 3;
+  }
+  tree[(max_code + 1) * 2 + 1]/*.Len*/ = 0xffff; /* guard */
+
+  for (n = 0; n <= max_code; n++) {
+    curlen = nextlen;
+    nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;
+
+    if (++count < max_count && curlen === nextlen) {
+      continue;
+
+    } else if (count < min_count) {
+      s.bl_tree[curlen * 2]/*.Freq*/ += count;
+
+    } else if (curlen !== 0) {
+
+      if (curlen !== prevlen) { s.bl_tree[curlen * 2]/*.Freq*/++; }
+      s.bl_tree[REP_3_6 * 2]/*.Freq*/++;
+
+    } else if (count <= 10) {
+      s.bl_tree[REPZ_3_10 * 2]/*.Freq*/++;
+
+    } else {
+      s.bl_tree[REPZ_11_138 * 2]/*.Freq*/++;
+    }
+
+    count = 0;
+    prevlen = curlen;
+
+    if (nextlen === 0) {
+      max_count = 138;
+      min_count = 3;
+
+    } else if (curlen === nextlen) {
+      max_count = 6;
+      min_count = 3;
+
+    } else {
+      max_count = 7;
+      min_count = 4;
+    }
+  }
+};
+
+
+/* ===========================================================================
+ * Send a literal or distance tree in compressed form, using the codes in
+ * bl_tree.
+ */
+const send_tree = (s, tree, max_code) => {
+//    deflate_state *s;
+//    ct_data *tree; /* the tree to be scanned */
+//    int max_code;       /* and its largest code of non zero frequency */
+
+  let n;                     /* iterates over all tree elements */
+  let prevlen = -1;          /* last emitted length */
+  let curlen;                /* length of current code */
+
+  let nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */
+
+  let count = 0;             /* repeat count of the current code */
+  let max_count = 7;         /* max repeat count */
+  let min_count = 4;         /* min repeat count */
+
+  /* tree[max_code+1].Len = -1; */  /* guard already set */
+  if (nextlen === 0) {
+    max_count = 138;
+    min_count = 3;
+  }
+
+  for (n = 0; n <= max_code; n++) {
+    curlen = nextlen;
+    nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;
+
+    if (++count < max_count && curlen === nextlen) {
+      continue;
+
+    } else if (count < min_count) {
+      do { send_code(s, curlen, s.bl_tree); } while (--count !== 0);
+
+    } else if (curlen !== 0) {
+      if (curlen !== prevlen) {
+        send_code(s, curlen, s.bl_tree);
+        count--;
+      }
+      //Assert(count >= 3 && count <= 6, " 3_6?");
+      send_code(s, REP_3_6, s.bl_tree);
+      send_bits(s, count - 3, 2);
+
+    } else if (count <= 10) {
+      send_code(s, REPZ_3_10, s.bl_tree);
+      send_bits(s, count - 3, 3);
+
+    } else {
+      send_code(s, REPZ_11_138, s.bl_tree);
+      send_bits(s, count - 11, 7);
+    }
+
+    count = 0;
+    prevlen = curlen;
+    if (nextlen === 0) {
+      max_count = 138;
+      min_count = 3;
+
+    } else if (curlen === nextlen) {
+      max_count = 6;
+      min_count = 3;
+
+    } else {
+      max_count = 7;
+      min_count = 4;
+    }
+  }
+};
+
+
+/* ===========================================================================
+ * Construct the Huffman tree for the bit lengths and return the index in
+ * bl_order of the last bit length code to send.
+ */
+const build_bl_tree = (s) => {
+
+  let max_blindex;  /* index of last bit length code of non zero freq */
+
+  /* Determine the bit length frequencies for literal and distance trees */
+  scan_tree(s, s.dyn_ltree, s.l_desc.max_code);
+  scan_tree(s, s.dyn_dtree, s.d_desc.max_code);
+
+  /* Build the bit length tree: */
+  build_tree(s, s.bl_desc);
+  /* opt_len now includes the length of the tree representations, except
+   * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
+   */
+
+  /* Determine the number of bit length codes to send. The pkzip format
+   * requires that at least 4 bit length codes be sent. (appnote.txt says
+   * 3 but the actual value used is 4.)
+   */
+  for (max_blindex = BL_CODES$1 - 1; max_blindex >= 3; max_blindex--) {
+    if (s.bl_tree[bl_order[max_blindex] * 2 + 1]/*.Len*/ !== 0) {
+      break;
+    }
+  }
+  /* Update opt_len to include the bit length tree and counts */
+  s.opt_len += 3 * (max_blindex + 1) + 5 + 5 + 4;
+  //Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
+  //        s->opt_len, s->static_len));
+
+  return max_blindex;
+};
+
+
+/* ===========================================================================
+ * Send the header for a block using dynamic Huffman trees: the counts, the
+ * lengths of the bit length codes, the literal tree and the distance tree.
+ * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
+ */
+const send_all_trees = (s, lcodes, dcodes, blcodes) => {
+//    deflate_state *s;
+//    int lcodes, dcodes, blcodes; /* number of codes for each tree */
+
+  let rank;                    /* index in bl_order */
+
+  //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
+  //Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
+  //        "too many codes");
+  //Tracev((stderr, "\nbl counts: "));
+  send_bits(s, lcodes - 257, 5); /* not +255 as stated in appnote.txt */
+  send_bits(s, dcodes - 1,   5);
+  send_bits(s, blcodes - 4,  4); /* not -3 as stated in appnote.txt */
+  for (rank = 0; rank < blcodes; rank++) {
+    //Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
+    send_bits(s, s.bl_tree[bl_order[rank] * 2 + 1]/*.Len*/, 3);
+  }
+  //Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));
+
+  send_tree(s, s.dyn_ltree, lcodes - 1); /* literal tree */
+  //Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));
+
+  send_tree(s, s.dyn_dtree, dcodes - 1); /* distance tree */
+  //Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
+};
+
+
+/* ===========================================================================
+ * Check if the data type is TEXT or BINARY, using the following algorithm:
+ * - TEXT if the two conditions below are satisfied:
+ *    a) There are no non-portable control characters belonging to the
+ *       "block list" (0..6, 14..25, 28..31).
+ *    b) There is at least one printable character belonging to the
+ *       "allow list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).
+ * - BINARY otherwise.
+ * - The following partially-portable control characters form a
+ *   "gray list" that is ignored in this detection algorithm:
+ *   (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).
+ * IN assertion: the fields Freq of dyn_ltree are set.
+ */
+const detect_data_type = (s) => {
+  /* block_mask is the bit mask of block-listed bytes
+   * set bits 0..6, 14..25, and 28..31
+   * 0xf3ffc07f = binary 11110011111111111100000001111111
+   */
+  let block_mask = 0xf3ffc07f;
+  let n;
+
+  /* Check for non-textual ("block-listed") bytes. */
+  for (n = 0; n <= 31; n++, block_mask >>>= 1) {
+    if ((block_mask & 1) && (s.dyn_ltree[n * 2]/*.Freq*/ !== 0)) {
+      return Z_BINARY;
+    }
+  }
+
+  /* Check for textual ("allow-listed") bytes. */
+  if (s.dyn_ltree[9 * 2]/*.Freq*/ !== 0 || s.dyn_ltree[10 * 2]/*.Freq*/ !== 0 ||
+      s.dyn_ltree[13 * 2]/*.Freq*/ !== 0) {
+    return Z_TEXT;
+  }
+  for (n = 32; n < LITERALS$1$1; n++) {
+    if (s.dyn_ltree[n * 2]/*.Freq*/ !== 0) {
+      return Z_TEXT;
+    }
+  }
+
+  /* There are no "block-listed" or "allow-listed" bytes:
+   * this stream either is empty or has tolerated ("gray-listed") bytes only.
+   */
+  return Z_BINARY;
+};
+
+
+let static_init_done = false;
+
+/* ===========================================================================
+ * Initialize the tree data structures for a new zlib stream.
+ */
+const _tr_init$1 = (s) =>
+{
+
+  if (!static_init_done) {
+    tr_static_init();
+    static_init_done = true;
+  }
+
+  s.l_desc  = new TreeDesc(s.dyn_ltree, static_l_desc);
+  s.d_desc  = new TreeDesc(s.dyn_dtree, static_d_desc);
+  s.bl_desc = new TreeDesc(s.bl_tree, static_bl_desc);
+
+  s.bi_buf = 0;
+  s.bi_valid = 0;
+
+  /* Initialize the first block of the first file: */
+  init_block(s);
+};
+
+
+/* ===========================================================================
+ * Send a stored block
+ */
+const _tr_stored_block$1 = (s, buf, stored_len, last) => {
+//DeflateState *s;
+//charf *buf;       /* input block */
+//ulg stored_len;   /* length of input block */
+//int last;         /* one if this is the last block for a file */
+
+  send_bits(s, (STORED_BLOCK << 1) + (last ? 1 : 0), 3);    /* send block type */
+  bi_windup(s);        /* align on byte boundary */
+  put_short(s, stored_len);
+  put_short(s, ~stored_len);
+  if (stored_len) {
+    s.pending_buf.set(s.window.subarray(buf, buf + stored_len), s.pending);
+  }
+  s.pending += stored_len;
+};
+
+
+/* ===========================================================================
+ * Send one empty static block to give enough lookahead for inflate.
+ * This takes 10 bits, of which 7 may remain in the bit buffer.
+ */
+const _tr_align$1 = (s) => {
+  send_bits(s, STATIC_TREES << 1, 3);
+  send_code(s, END_BLOCK, static_ltree$1);
+  bi_flush(s);
+};
+
+
+/* ===========================================================================
+ * Determine the best encoding for the current block: dynamic trees, static
+ * trees or store, and write out the encoded block.
+ */
+const _tr_flush_block$1 = (s, buf, stored_len, last) => {
+//DeflateState *s;
+//charf *buf;       /* input block, or NULL if too old */
+//ulg stored_len;   /* length of input block */
+//int last;         /* one if this is the last block for a file */
+
+  let opt_lenb, static_lenb;  /* opt_len and static_len in bytes */
+  let max_blindex = 0;        /* index of last bit length code of non zero freq */
+
+  /* Build the Huffman trees unless a stored block is forced */
+  if (s.level > 0) {
+
+    /* Check if the file is binary or text */
+    if (s.strm.data_type === Z_UNKNOWN$1) {
+      s.strm.data_type = detect_data_type(s);
+    }
+
+    /* Construct the literal and distance trees */
+    build_tree(s, s.l_desc);
+    // Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
+    //        s->static_len));
+
+    build_tree(s, s.d_desc);
+    // Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
+    //        s->static_len));
+    /* At this point, opt_len and static_len are the total bit lengths of
+     * the compressed block data, excluding the tree representations.
+     */
+
+    /* Build the bit length tree for the above two trees, and get the index
+     * in bl_order of the last bit length code to send.
+     */
+    max_blindex = build_bl_tree(s);
+
+    /* Determine the best encoding. Compute the block lengths in bytes. */
+    opt_lenb = (s.opt_len + 3 + 7) >>> 3;
+    static_lenb = (s.static_len + 3 + 7) >>> 3;
+
+    // Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
+    //        opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
+    //        s->sym_next / 3));
+
+    if (static_lenb <= opt_lenb) { opt_lenb = static_lenb; }
+
+  } else {
+    // Assert(buf != (char*)0, "lost buf");
+    opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
+  }
+
+  if ((stored_len + 4 <= opt_lenb) && (buf !== -1)) {
+    /* 4: two words for the lengths */
+
+    /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
+     * Otherwise we can't have processed more than WSIZE input bytes since
+     * the last block flush, because compression would have been
+     * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
+     * transform a block into a stored block.
+     */
+    _tr_stored_block$1(s, buf, stored_len, last);
+
+  } else if (s.strategy === Z_FIXED$1 || static_lenb === opt_lenb) {
+
+    send_bits(s, (STATIC_TREES << 1) + (last ? 1 : 0), 3);
+    compress_block(s, static_ltree$1, static_dtree$1);
+
+  } else {
+    send_bits(s, (DYN_TREES << 1) + (last ? 1 : 0), 3);
+    send_all_trees(s, s.l_desc.max_code + 1, s.d_desc.max_code + 1, max_blindex + 1);
+    compress_block(s, s.dyn_ltree, s.dyn_dtree);
+  }
+  // Assert (s->compressed_len == s->bits_sent, "bad compressed size");
+  /* The above check is made mod 2^32, for files larger than 512 MB
+   * and uLong implemented on 32 bits.
+   */
+  init_block(s);
+
+  if (last) {
+    bi_windup(s);
+  }
+  // Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,
+  //       s->compressed_len-7*last));
+};
+
+/* ===========================================================================
+ * Save the match info and tally the frequency counts. Return true if
+ * the current block must be flushed.
+ */
+const _tr_tally$1 = (s, dist, lc) => {
+//    deflate_state *s;
+//    unsigned dist;  /* distance of matched string */
+//    unsigned lc;    /* match length-MIN_MATCH or unmatched char (if dist==0) */
+
+  s.pending_buf[s.sym_buf + s.sym_next++] = dist;
+  s.pending_buf[s.sym_buf + s.sym_next++] = dist >> 8;
+  s.pending_buf[s.sym_buf + s.sym_next++] = lc;
+  if (dist === 0) {
+    /* lc is the unmatched char */
+    s.dyn_ltree[lc * 2]/*.Freq*/++;
+  } else {
+    s.matches++;
+    /* Here, lc is the match length - MIN_MATCH */
+    dist--;             /* dist = match distance - 1 */
+    //Assert((ush)dist < (ush)MAX_DIST(s) &&
+    //       (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
+    //       (ush)d_code(dist) < (ush)D_CODES,  "_tr_tally: bad match");
+
+    s.dyn_ltree[(_length_code$1[lc] + LITERALS$1$1 + 1) * 2]/*.Freq*/++;
+    s.dyn_dtree[d_code(dist) * 2]/*.Freq*/++;
+  }
+
+  return (s.sym_next === s.sym_end);
+};
+
+var _tr_init_1  = _tr_init$1;
+var _tr_stored_block_1 = _tr_stored_block$1;
+var _tr_flush_block_1  = _tr_flush_block$1;
+var _tr_tally_1 = _tr_tally$1;
+var _tr_align_1 = _tr_align$1;
+
+var trees = {
+	_tr_init: _tr_init_1,
+	_tr_stored_block: _tr_stored_block_1,
+	_tr_flush_block: _tr_flush_block_1,
+	_tr_tally: _tr_tally_1,
+	_tr_align: _tr_align_1
+};
+
+// Note: adler32 takes 12% for level 0 and 2% for level 6.
+// It isn't worth it to make additional optimizations as in original.
+// Small size is preferable.
+
+// (C) 1995-2013 Jean-loup Gailly and Mark Adler
+// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//   claim that you wrote the original software. If you use this software
+//   in a product, an acknowledgment in the product documentation would be
+//   appreciated but is not required.
+// 2. Altered source versions must be plainly marked as such, and must not be
+//   misrepresented as being the original software.
+// 3. This notice may not be removed or altered from any source distribution.
+
+const adler32$1 = (adler, buf, len, pos) => {
+  let s1 = (adler & 0xffff) |0,
+      s2 = ((adler >>> 16) & 0xffff) |0,
+      n = 0;
+
+  while (len !== 0) {
+    // Set limit ~ twice less than 5552, to keep
+    // s2 in 31-bits, because we force signed ints.
+    // in other case %= will fail.
+    n = len > 2000 ? 2000 : len;
+    len -= n;
+
+    do {
+      s1 = (s1 + buf[pos++]) |0;
+      s2 = (s2 + s1) |0;
+    } while (--n);
+
+    s1 %= 65521;
+    s2 %= 65521;
+  }
+
+  return (s1 | (s2 << 16)) |0;
+};
+
+
+var adler32_1$1 = adler32$1;
+
+// Note: we can't get significant speed boost here.
+// So write code to minimize size - no pregenerated tables
+// and array tools dependencies.
+
+// (C) 1995-2013 Jean-loup Gailly and Mark Adler
+// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//   claim that you wrote the original software. If you use this software
+//   in a product, an acknowledgment in the product documentation would be
+//   appreciated but is not required.
+// 2. Altered source versions must be plainly marked as such, and must not be
+//   misrepresented as being the original software.
+// 3. This notice may not be removed or altered from any source distribution.
+
+// Use ordinary array, since untyped makes no boost here
+const makeTable$1 = () => {
+  let c, table = [];
+
+  for (var n = 0; n < 256; n++) {
+    c = n;
+    for (var k = 0; k < 8; k++) {
+      c = ((c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));
+    }
+    table[n] = c;
+  }
+
+  return table;
+};
+
+// Create table on load. Just 255 signed longs. Not a problem.
+const crcTable$1 = new Uint32Array(makeTable$1());
+
+
+const crc32$1 = (crc, buf, len, pos) => {
+  const t = crcTable$1;
+  const end = pos + len;
+
+  crc ^= -1;
+
+  for (let i = pos; i < end; i++) {
+    crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];
+  }
+
+  return (crc ^ (-1)); // >>> 0;
+};
+
+
+var crc32_1$1 = crc32$1;
+
+// (C) 1995-2013 Jean-loup Gailly and Mark Adler
+// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//   claim that you wrote the original software. If you use this software
+//   in a product, an acknowledgment in the product documentation would be
+//   appreciated but is not required.
+// 2. Altered source versions must be plainly marked as such, and must not be
+//   misrepresented as being the original software.
+// 3. This notice may not be removed or altered from any source distribution.
+
+var messages$1 = {
+  2:      'need dictionary',     /* Z_NEED_DICT       2  */
+  1:      'stream end',          /* Z_STREAM_END      1  */
+  0:      '',                    /* Z_OK              0  */
+  '-1':   'file error',          /* Z_ERRNO         (-1) */
+  '-2':   'stream error',        /* Z_STREAM_ERROR  (-2) */
+  '-3':   'data error',          /* Z_DATA_ERROR    (-3) */
+  '-4':   'insufficient memory', /* Z_MEM_ERROR     (-4) */
+  '-5':   'buffer error',        /* Z_BUF_ERROR     (-5) */
+  '-6':   'incompatible version' /* Z_VERSION_ERROR (-6) */
+};
+
+// (C) 1995-2013 Jean-loup Gailly and Mark Adler
+// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//   claim that you wrote the original software. If you use this software
+//   in a product, an acknowledgment in the product documentation would be
+//   appreciated but is not required.
+// 2. Altered source versions must be plainly marked as such, and must not be
+//   misrepresented as being the original software.
+// 3. This notice may not be removed or altered from any source distribution.
+
+var constants$2$1 = {
+
+  /* Allowed flush values; see deflate() and inflate() below for details */
+  Z_NO_FLUSH:         0,
+  Z_PARTIAL_FLUSH:    1,
+  Z_SYNC_FLUSH:       2,
+  Z_FULL_FLUSH:       3,
+  Z_FINISH:           4,
+  Z_BLOCK:            5,
+  Z_TREES:            6,
+
+  /* Return codes for the compression/decompression functions. Negative values
+  * are errors, positive values are used for special but normal events.
+  */
+  Z_OK:               0,
+  Z_STREAM_END:       1,
+  Z_NEED_DICT:        2,
+  Z_ERRNO:           -1,
+  Z_STREAM_ERROR:    -2,
+  Z_DATA_ERROR:      -3,
+  Z_MEM_ERROR:       -4,
+  Z_BUF_ERROR:       -5,
+  //Z_VERSION_ERROR: -6,
+
+  /* compression levels */
+  Z_NO_COMPRESSION:         0,
+  Z_BEST_SPEED:             1,
+  Z_BEST_COMPRESSION:       9,
+  Z_DEFAULT_COMPRESSION:   -1,
+
+
+  Z_FILTERED:               1,
+  Z_HUFFMAN_ONLY:           2,
+  Z_RLE:                    3,
+  Z_FIXED:                  4,
+  Z_DEFAULT_STRATEGY:       0,
+
+  /* Possible values of the data_type field (though see inflate()) */
+  Z_BINARY:                 0,
+  Z_TEXT:                   1,
+  //Z_ASCII:                1, // = Z_TEXT (deprecated)
+  Z_UNKNOWN:                2,
+
+  /* The deflate compression method */
+  Z_DEFLATED:               8
+  //Z_NULL:                 null // Use -1 or null inline, depending on var type
+};
+
+// (C) 1995-2013 Jean-loup Gailly and Mark Adler
+// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//   claim that you wrote the original software. If you use this software
+//   in a product, an acknowledgment in the product documentation would be
+//   appreciated but is not required.
+// 2. Altered source versions must be plainly marked as such, and must not be
+//   misrepresented as being the original software.
+// 3. This notice may not be removed or altered from any source distribution.
+
+const { _tr_init, _tr_stored_block, _tr_flush_block, _tr_tally, _tr_align } = trees;
+
+
+
+
+/* Public constants ==========================================================*/
+/* ===========================================================================*/
+
+const {
+  Z_NO_FLUSH: Z_NO_FLUSH$2, Z_PARTIAL_FLUSH, Z_FULL_FLUSH: Z_FULL_FLUSH$1, Z_FINISH: Z_FINISH$3, Z_BLOCK: Z_BLOCK$1,
+  Z_OK: Z_OK$3, Z_STREAM_END: Z_STREAM_END$3, Z_STREAM_ERROR: Z_STREAM_ERROR$2, Z_DATA_ERROR: Z_DATA_ERROR$2, Z_BUF_ERROR: Z_BUF_ERROR$1,
+  Z_DEFAULT_COMPRESSION: Z_DEFAULT_COMPRESSION$1,
+  Z_FILTERED, Z_HUFFMAN_ONLY, Z_RLE, Z_FIXED, Z_DEFAULT_STRATEGY: Z_DEFAULT_STRATEGY$1,
+  Z_UNKNOWN,
+  Z_DEFLATED: Z_DEFLATED$2
+} = constants$2$1;
+
+/*============================================================================*/
+
+
+const MAX_MEM_LEVEL = 9;
+/* Maximum value for memLevel in deflateInit2 */
+const MAX_WBITS$1 = 15;
+/* 32K LZ77 window */
+const DEF_MEM_LEVEL = 8;
+
+
+const LENGTH_CODES  = 29;
+/* number of length codes, not counting the special END_BLOCK code */
+const LITERALS      = 256;
+/* number of literal bytes 0..255 */
+const L_CODES       = LITERALS + 1 + LENGTH_CODES;
+/* number of Literal or Length codes, including the END_BLOCK code */
+const D_CODES       = 30;
+/* number of distance codes */
+const BL_CODES      = 19;
+/* number of codes used to transfer the bit lengths */
+const HEAP_SIZE     = 2 * L_CODES + 1;
+/* maximum heap size */
+const MAX_BITS  = 15;
+/* All codes must not exceed MAX_BITS bits */
+
+const MIN_MATCH = 3;
+const MAX_MATCH = 258;
+const MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1);
+
+const PRESET_DICT = 0x20;
+
+const INIT_STATE    =  42;    /* zlib header -> BUSY_STATE */
+//#ifdef GZIP
+const GZIP_STATE    =  57;    /* gzip header -> BUSY_STATE | EXTRA_STATE */
+//#endif
+const EXTRA_STATE   =  69;    /* gzip extra block -> NAME_STATE */
+const NAME_STATE    =  73;    /* gzip file name -> COMMENT_STATE */
+const COMMENT_STATE =  91;    /* gzip comment -> HCRC_STATE */
+const HCRC_STATE    = 103;    /* gzip header CRC -> BUSY_STATE */
+const BUSY_STATE    = 113;    /* deflate -> FINISH_STATE */
+const FINISH_STATE  = 666;    /* stream complete */
+
+const BS_NEED_MORE      = 1; /* block not completed, need more input or more output */
+const BS_BLOCK_DONE     = 2; /* block flush performed */
+const BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */
+const BS_FINISH_DONE    = 4; /* finish done, accept no more input or output */
+
+const OS_CODE = 0x03; // Unix :) . Don't detect, use this default.
+
+const err = (strm, errorCode) => {
+  strm.msg = messages$1[errorCode];
+  return errorCode;
+};
+
+const rank = (f) => {
+  return ((f) * 2) - ((f) > 4 ? 9 : 0);
+};
+
+const zero = (buf) => {
+  let len = buf.length; while (--len >= 0) { buf[len] = 0; }
+};
+
+/* ===========================================================================
+ * Slide the hash table when sliding the window down (could be avoided with 32
+ * bit values at the expense of memory usage). We slide even when level == 0 to
+ * keep the hash table consistent if we switch back to level > 0 later.
+ */
+const slide_hash = (s) => {
+  let n, m;
+  let p;
+  let wsize = s.w_size;
+
+  n = s.hash_size;
+  p = n;
+  do {
+    m = s.head[--p];
+    s.head[p] = (m >= wsize ? m - wsize : 0);
+  } while (--n);
+  n = wsize;
+//#ifndef FASTEST
+  p = n;
+  do {
+    m = s.prev[--p];
+    s.prev[p] = (m >= wsize ? m - wsize : 0);
+    /* If n is not on any hash chain, prev[n] is garbage but
+     * its value will never be used.
+     */
+  } while (--n);
+//#endif
+};
+
+/* eslint-disable new-cap */
+let HASH_ZLIB = (s, prev, data) => ((prev << s.hash_shift) ^ data) & s.hash_mask;
+// This hash causes less collisions, https://github.com/nodeca/pako/issues/135
+// But breaks binary compatibility
+//let HASH_FAST = (s, prev, data) => ((prev << 8) + (prev >> 8) + (data << 4)) & s.hash_mask;
+let HASH = HASH_ZLIB;
+
+
+/* =========================================================================
+ * Flush as much pending output as possible. All deflate() output, except for
+ * some deflate_stored() output, goes through this function so some
+ * applications may wish to modify it to avoid allocating a large
+ * strm->next_out buffer and copying into it. (See also read_buf()).
+ */
+const flush_pending = (strm) => {
+  const s = strm.state;
+
+  //_tr_flush_bits(s);
+  let len = s.pending;
+  if (len > strm.avail_out) {
+    len = strm.avail_out;
+  }
+  if (len === 0) { return; }
+
+  strm.output.set(s.pending_buf.subarray(s.pending_out, s.pending_out + len), strm.next_out);
+  strm.next_out  += len;
+  s.pending_out  += len;
+  strm.total_out += len;
+  strm.avail_out -= len;
+  s.pending      -= len;
+  if (s.pending === 0) {
+    s.pending_out = 0;
+  }
+};
+
+
+const flush_block_only = (s, last) => {
+  _tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last);
+  s.block_start = s.strstart;
+  flush_pending(s.strm);
+};
+
+
+const put_byte = (s, b) => {
+  s.pending_buf[s.pending++] = b;
+};
+
+
+/* =========================================================================
+ * Put a short in the pending buffer. The 16-bit value is put in MSB order.
+ * IN assertion: the stream state is correct and there is enough room in
+ * pending_buf.
+ */
+const putShortMSB = (s, b) => {
+
+  //  put_byte(s, (Byte)(b >> 8));
+//  put_byte(s, (Byte)(b & 0xff));
+  s.pending_buf[s.pending++] = (b >>> 8) & 0xff;
+  s.pending_buf[s.pending++] = b & 0xff;
+};
+
+
+/* ===========================================================================
+ * Read a new buffer from the current input stream, update the adler32
+ * and total number of bytes read.  All deflate() input goes through
+ * this function so some applications may wish to modify it to avoid
+ * allocating a large strm->input buffer and copying from it.
+ * (See also flush_pending()).
+ */
+const read_buf = (strm, buf, start, size) => {
+
+  let len = strm.avail_in;
+
+  if (len > size) { len = size; }
+  if (len === 0) { return 0; }
+
+  strm.avail_in -= len;
+
+  // zmemcpy(buf, strm->next_in, len);
+  buf.set(strm.input.subarray(strm.next_in, strm.next_in + len), start);
+  if (strm.state.wrap === 1) {
+    strm.adler = adler32_1$1(strm.adler, buf, len, start);
+  }
+
+  else if (strm.state.wrap === 2) {
+    strm.adler = crc32_1$1(strm.adler, buf, len, start);
+  }
+
+  strm.next_in += len;
+  strm.total_in += len;
+
+  return len;
+};
+
+
+/* ===========================================================================
+ * Set match_start to the longest match starting at the given string and
+ * return its length. Matches shorter or equal to prev_length are discarded,
+ * in which case the result is equal to prev_length and match_start is
+ * garbage.
+ * IN assertions: cur_match is the head of the hash chain for the current
+ *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
+ * OUT assertion: the match length is not greater than s->lookahead.
+ */
+const longest_match = (s, cur_match) => {
+
+  let chain_length = s.max_chain_length;      /* max hash chain length */
+  let scan = s.strstart; /* current string */
+  let match;                       /* matched string */
+  let len;                           /* length of current match */
+  let best_len = s.prev_length;              /* best match length so far */
+  let nice_match = s.nice_match;             /* stop if match long enough */
+  const limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ?
+      s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/;
+
+  const _win = s.window; // shortcut
+
+  const wmask = s.w_mask;
+  const prev  = s.prev;
+
+  /* Stop when cur_match becomes <= limit. To simplify the code,
+   * we prevent matches with the string of window index 0.
+   */
+
+  const strend = s.strstart + MAX_MATCH;
+  let scan_end1  = _win[scan + best_len - 1];
+  let scan_end   = _win[scan + best_len];
+
+  /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
+   * It is easy to get rid of this optimization if necessary.
+   */
+  // Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
+
+  /* Do not waste too much time if we already have a good match: */
+  if (s.prev_length >= s.good_match) {
+    chain_length >>= 2;
+  }
+  /* Do not look for matches beyond the end of the input. This is necessary
+   * to make deflate deterministic.
+   */
+  if (nice_match > s.lookahead) { nice_match = s.lookahead; }
+
+  // Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
+
+  do {
+    // Assert(cur_match < s->strstart, "no future");
+    match = cur_match;
+
+    /* Skip to next match if the match length cannot increase
+     * or if the match length is less than 2.  Note that the checks below
+     * for insufficient lookahead only occur occasionally for performance
+     * reasons.  Therefore uninitialized memory will be accessed, and
+     * conditional jumps will be made that depend on those values.
+     * However the length of the match is limited to the lookahead, so
+     * the output of deflate is not affected by the uninitialized values.
+     */
+
+    if (_win[match + best_len]     !== scan_end  ||
+        _win[match + best_len - 1] !== scan_end1 ||
+        _win[match]                !== _win[scan] ||
+        _win[++match]              !== _win[scan + 1]) {
+      continue;
+    }
+
+    /* The check at best_len-1 can be removed because it will be made
+     * again later. (This heuristic is not always a win.)
+     * It is not necessary to compare scan[2] and match[2] since they
+     * are always equal when the other bytes match, given that
+     * the hash keys are equal and that HASH_BITS >= 8.
+     */
+    scan += 2;
+    match++;
+    // Assert(*scan == *match, "match[2]?");
+
+    /* We check for insufficient lookahead only every 8th comparison;
+     * the 256th check will be made at strstart+258.
+     */
+    do {
+      /*jshint noempty:false*/
+    } while (_win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
+             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
+             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
+             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
+             scan < strend);
+
+    // Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
+
+    len = MAX_MATCH - (strend - scan);
+    scan = strend - MAX_MATCH;
+
+    if (len > best_len) {
+      s.match_start = cur_match;
+      best_len = len;
+      if (len >= nice_match) {
+        break;
+      }
+      scan_end1  = _win[scan + best_len - 1];
+      scan_end   = _win[scan + best_len];
+    }
+  } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length !== 0);
+
+  if (best_len <= s.lookahead) {
+    return best_len;
+  }
+  return s.lookahead;
+};
+
+
+/* ===========================================================================
+ * Fill the window when the lookahead becomes insufficient.
+ * Updates strstart and lookahead.
+ *
+ * IN assertion: lookahead < MIN_LOOKAHEAD
+ * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
+ *    At least one byte has been read, or avail_in == 0; reads are
+ *    performed for at least two bytes (required for the zip translate_eol
+ *    option -- not supported here).
+ */
+const fill_window = (s) => {
+
+  const _w_size = s.w_size;
+  let n, more, str;
+
+  //Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");
+
+  do {
+    more = s.window_size - s.lookahead - s.strstart;
+
+    // JS ints have 32 bit, block below not needed
+    /* Deal with !@#$% 64K limit: */
+    //if (sizeof(int) <= 2) {
+    //    if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
+    //        more = wsize;
+    //
+    //  } else if (more == (unsigned)(-1)) {
+    //        /* Very unlikely, but possible on 16 bit machine if
+    //         * strstart == 0 && lookahead == 1 (input done a byte at time)
+    //         */
+    //        more--;
+    //    }
+    //}
+
+
+    /* If the window is almost full and there is insufficient lookahead,
+     * move the upper half to the lower one to make room in the upper half.
+     */
+    if (s.strstart >= _w_size + (_w_size - MIN_LOOKAHEAD)) {
+
+      s.window.set(s.window.subarray(_w_size, _w_size + _w_size - more), 0);
+      s.match_start -= _w_size;
+      s.strstart -= _w_size;
+      /* we now have strstart >= MAX_DIST */
+      s.block_start -= _w_size;
+      if (s.insert > s.strstart) {
+        s.insert = s.strstart;
+      }
+      slide_hash(s);
+      more += _w_size;
+    }
+    if (s.strm.avail_in === 0) {
+      break;
+    }
+
+    /* If there was no sliding:
+     *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
+     *    more == window_size - lookahead - strstart
+     * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
+     * => more >= window_size - 2*WSIZE + 2
+     * In the BIG_MEM or MMAP case (not yet supported),
+     *   window_size == input_size + MIN_LOOKAHEAD  &&
+     *   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
+     * Otherwise, window_size == 2*WSIZE so more >= 2.
+     * If there was sliding, more >= WSIZE. So in all cases, more >= 2.
+     */
+    //Assert(more >= 2, "more < 2");
+    n = read_buf(s.strm, s.window, s.strstart + s.lookahead, more);
+    s.lookahead += n;
+
+    /* Initialize the hash value now that we have some input: */
+    if (s.lookahead + s.insert >= MIN_MATCH) {
+      str = s.strstart - s.insert;
+      s.ins_h = s.window[str];
+
+      /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */
+      s.ins_h = HASH(s, s.ins_h, s.window[str + 1]);
+//#if MIN_MATCH != 3
+//        Call update_hash() MIN_MATCH-3 more times
+//#endif
+      while (s.insert) {
+        /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */
+        s.ins_h = HASH(s, s.ins_h, s.window[str + MIN_MATCH - 1]);
+
+        s.prev[str & s.w_mask] = s.head[s.ins_h];
+        s.head[s.ins_h] = str;
+        str++;
+        s.insert--;
+        if (s.lookahead + s.insert < MIN_MATCH) {
+          break;
+        }
+      }
+    }
+    /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
+     * but this is not important since only literal bytes will be emitted.
+     */
+
+  } while (s.lookahead < MIN_LOOKAHEAD && s.strm.avail_in !== 0);
+
+  /* If the WIN_INIT bytes after the end of the current data have never been
+   * written, then zero those bytes in order to avoid memory check reports of
+   * the use of uninitialized (or uninitialised as Julian writes) bytes by
+   * the longest match routines.  Update the high water mark for the next
+   * time through here.  WIN_INIT is set to MAX_MATCH since the longest match
+   * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.
+   */
+//  if (s.high_water < s.window_size) {
+//    const curr = s.strstart + s.lookahead;
+//    let init = 0;
+//
+//    if (s.high_water < curr) {
+//      /* Previous high water mark below current data -- zero WIN_INIT
+//       * bytes or up to end of window, whichever is less.
+//       */
+//      init = s.window_size - curr;
+//      if (init > WIN_INIT)
+//        init = WIN_INIT;
+//      zmemzero(s->window + curr, (unsigned)init);
+//      s->high_water = curr + init;
+//    }
+//    else if (s->high_water < (ulg)curr + WIN_INIT) {
+//      /* High water mark at or above current data, but below current data
+//       * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up
+//       * to end of window, whichever is less.
+//       */
+//      init = (ulg)curr + WIN_INIT - s->high_water;
+//      if (init > s->window_size - s->high_water)
+//        init = s->window_size - s->high_water;
+//      zmemzero(s->window + s->high_water, (unsigned)init);
+//      s->high_water += init;
+//    }
+//  }
+//
+//  Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
+//    "not enough room for search");
+};
+
+/* ===========================================================================
+ * Copy without compression as much as possible from the input stream, return
+ * the current block state.
+ *
+ * In case deflateParams() is used to later switch to a non-zero compression
+ * level, s->matches (otherwise unused when storing) keeps track of the number
+ * of hash table slides to perform. If s->matches is 1, then one hash table
+ * slide will be done when switching. If s->matches is 2, the maximum value
+ * allowed here, then the hash table will be cleared, since two or more slides
+ * is the same as a clear.
+ *
+ * deflate_stored() is written to minimize the number of times an input byte is
+ * copied. It is most efficient with large input and output buffers, which
+ * maximizes the opportunites to have a single copy from next_in to next_out.
+ */
+const deflate_stored = (s, flush) => {
+
+  /* Smallest worthy block size when not flushing or finishing. By default
+   * this is 32K. This can be as small as 507 bytes for memLevel == 1. For
+   * large input and output buffers, the stored block size will be larger.
+   */
+  let min_block = s.pending_buf_size - 5 > s.w_size ? s.w_size : s.pending_buf_size - 5;
+
+  /* Copy as many min_block or larger stored blocks directly to next_out as
+   * possible. If flushing, copy the remaining available input to next_out as
+   * stored blocks, if there is enough space.
+   */
+  let len, left, have, last = 0;
+  let used = s.strm.avail_in;
+  do {
+    /* Set len to the maximum size block that we can copy directly with the
+     * available input data and output space. Set left to how much of that
+     * would be copied from what's left in the window.
+     */
+    len = 65535/* MAX_STORED */;     /* maximum deflate stored block length */
+    have = (s.bi_valid + 42) >> 3;     /* number of header bytes */
+    if (s.strm.avail_out < have) {         /* need room for header */
+      break;
+    }
+      /* maximum stored block length that will fit in avail_out: */
+    have = s.strm.avail_out - have;
+    left = s.strstart - s.block_start;  /* bytes left in window */
+    if (len > left + s.strm.avail_in) {
+      len = left + s.strm.avail_in;   /* limit len to the input */
+    }
+    if (len > have) {
+      len = have;             /* limit len to the output */
+    }
+
+    /* If the stored block would be less than min_block in length, or if
+     * unable to copy all of the available input when flushing, then try
+     * copying to the window and the pending buffer instead. Also don't
+     * write an empty block when flushing -- deflate() does that.
+     */
+    if (len < min_block && ((len === 0 && flush !== Z_FINISH$3) ||
+                        flush === Z_NO_FLUSH$2 ||
+                        len !== left + s.strm.avail_in)) {
+      break;
+    }
+
+    /* Make a dummy stored block in pending to get the header bytes,
+     * including any pending bits. This also updates the debugging counts.
+     */
+    last = flush === Z_FINISH$3 && len === left + s.strm.avail_in ? 1 : 0;
+    _tr_stored_block(s, 0, 0, last);
+
+    /* Replace the lengths in the dummy stored block with len. */
+    s.pending_buf[s.pending - 4] = len;
+    s.pending_buf[s.pending - 3] = len >> 8;
+    s.pending_buf[s.pending - 2] = ~len;
+    s.pending_buf[s.pending - 1] = ~len >> 8;
+
+    /* Write the stored block header bytes. */
+    flush_pending(s.strm);
+
+//#ifdef ZLIB_DEBUG
+//    /* Update debugging counts for the data about to be copied. */
+//    s->compressed_len += len << 3;
+//    s->bits_sent += len << 3;
+//#endif
+
+    /* Copy uncompressed bytes from the window to next_out. */
+    if (left) {
+      if (left > len) {
+        left = len;
+      }
+      //zmemcpy(s->strm->next_out, s->window + s->block_start, left);
+      s.strm.output.set(s.window.subarray(s.block_start, s.block_start + left), s.strm.next_out);
+      s.strm.next_out += left;
+      s.strm.avail_out -= left;
+      s.strm.total_out += left;
+      s.block_start += left;
+      len -= left;
+    }
+
+    /* Copy uncompressed bytes directly from next_in to next_out, updating
+     * the check value.
+     */
+    if (len) {
+      read_buf(s.strm, s.strm.output, s.strm.next_out, len);
+      s.strm.next_out += len;
+      s.strm.avail_out -= len;
+      s.strm.total_out += len;
+    }
+  } while (last === 0);
+
+  /* Update the sliding window with the last s->w_size bytes of the copied
+   * data, or append all of the copied data to the existing window if less
+   * than s->w_size bytes were copied. Also update the number of bytes to
+   * insert in the hash tables, in the event that deflateParams() switches to
+   * a non-zero compression level.
+   */
+  used -= s.strm.avail_in;    /* number of input bytes directly copied */
+  if (used) {
+    /* If any input was used, then no unused input remains in the window,
+     * therefore s->block_start == s->strstart.
+     */
+    if (used >= s.w_size) {  /* supplant the previous history */
+      s.matches = 2;     /* clear hash */
+      //zmemcpy(s->window, s->strm->next_in - s->w_size, s->w_size);
+      s.window.set(s.strm.input.subarray(s.strm.next_in - s.w_size, s.strm.next_in), 0);
+      s.strstart = s.w_size;
+      s.insert = s.strstart;
+    }
+    else {
+      if (s.window_size - s.strstart <= used) {
+        /* Slide the window down. */
+        s.strstart -= s.w_size;
+        //zmemcpy(s->window, s->window + s->w_size, s->strstart);
+        s.window.set(s.window.subarray(s.w_size, s.w_size + s.strstart), 0);
+        if (s.matches < 2) {
+          s.matches++;   /* add a pending slide_hash() */
+        }
+        if (s.insert > s.strstart) {
+          s.insert = s.strstart;
+        }
+      }
+      //zmemcpy(s->window + s->strstart, s->strm->next_in - used, used);
+      s.window.set(s.strm.input.subarray(s.strm.next_in - used, s.strm.next_in), s.strstart);
+      s.strstart += used;
+      s.insert += used > s.w_size - s.insert ? s.w_size - s.insert : used;
+    }
+    s.block_start = s.strstart;
+  }
+  if (s.high_water < s.strstart) {
+    s.high_water = s.strstart;
+  }
+
+  /* If the last block was written to next_out, then done. */
+  if (last) {
+    return BS_FINISH_DONE;
+  }
+
+  /* If flushing and all input has been consumed, then done. */
+  if (flush !== Z_NO_FLUSH$2 && flush !== Z_FINISH$3 &&
+    s.strm.avail_in === 0 && s.strstart === s.block_start) {
+    return BS_BLOCK_DONE;
+  }
+
+  /* Fill the window with any remaining input. */
+  have = s.window_size - s.strstart;
+  if (s.strm.avail_in > have && s.block_start >= s.w_size) {
+    /* Slide the window down. */
+    s.block_start -= s.w_size;
+    s.strstart -= s.w_size;
+    //zmemcpy(s->window, s->window + s->w_size, s->strstart);
+    s.window.set(s.window.subarray(s.w_size, s.w_size + s.strstart), 0);
+    if (s.matches < 2) {
+      s.matches++;       /* add a pending slide_hash() */
+    }
+    have += s.w_size;      /* more space now */
+    if (s.insert > s.strstart) {
+      s.insert = s.strstart;
+    }
+  }
+  if (have > s.strm.avail_in) {
+    have = s.strm.avail_in;
+  }
+  if (have) {
+    read_buf(s.strm, s.window, s.strstart, have);
+    s.strstart += have;
+    s.insert += have > s.w_size - s.insert ? s.w_size - s.insert : have;
+  }
+  if (s.high_water < s.strstart) {
+    s.high_water = s.strstart;
+  }
+
+  /* There was not enough avail_out to write a complete worthy or flushed
+   * stored block to next_out. Write a stored block to pending instead, if we
+   * have enough input for a worthy block, or if flushing and there is enough
+   * room for the remaining input as a stored block in the pending buffer.
+   */
+  have = (s.bi_valid + 42) >> 3;     /* number of header bytes */
+    /* maximum stored block length that will fit in pending: */
+  have = s.pending_buf_size - have > 65535/* MAX_STORED */ ? 65535/* MAX_STORED */ : s.pending_buf_size - have;
+  min_block = have > s.w_size ? s.w_size : have;
+  left = s.strstart - s.block_start;
+  if (left >= min_block ||
+     ((left || flush === Z_FINISH$3) && flush !== Z_NO_FLUSH$2 &&
+     s.strm.avail_in === 0 && left <= have)) {
+    len = left > have ? have : left;
+    last = flush === Z_FINISH$3 && s.strm.avail_in === 0 &&
+         len === left ? 1 : 0;
+    _tr_stored_block(s, s.block_start, len, last);
+    s.block_start += len;
+    flush_pending(s.strm);
+  }
+
+  /* We've done all we can with the available input and output. */
+  return last ? BS_FINISH_STARTED : BS_NEED_MORE;
+};
+
+
+/* ===========================================================================
+ * Compress as much as possible from the input stream, return the current
+ * block state.
+ * This function does not perform lazy evaluation of matches and inserts
+ * new strings in the dictionary only for unmatched strings or for short
+ * matches. It is used only for the fast compression options.
+ */
+const deflate_fast = (s, flush) => {
+
+  let hash_head;        /* head of the hash chain */
+  let bflush;           /* set if current block must be flushed */
+
+  for (;;) {
+    /* Make sure that we always have enough lookahead, except
+     * at the end of the input file. We need MAX_MATCH bytes
+     * for the next match, plus MIN_MATCH bytes to insert the
+     * string following the next match.
+     */
+    if (s.lookahead < MIN_LOOKAHEAD) {
+      fill_window(s);
+      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH$2) {
+        return BS_NEED_MORE;
+      }
+      if (s.lookahead === 0) {
+        break; /* flush the current block */
+      }
+    }
+
+    /* Insert the string window[strstart .. strstart+2] in the
+     * dictionary, and set hash_head to the head of the hash chain:
+     */
+    hash_head = 0/*NIL*/;
+    if (s.lookahead >= MIN_MATCH) {
+      /*** INSERT_STRING(s, s.strstart, hash_head); ***/
+      s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);
+      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
+      s.head[s.ins_h] = s.strstart;
+      /***/
+    }
+
+    /* Find the longest match, discarding those <= prev_length.
+     * At this point we have always match_length < MIN_MATCH
+     */
+    if (hash_head !== 0/*NIL*/ && ((s.strstart - hash_head) <= (s.w_size - MIN_LOOKAHEAD))) {
+      /* To simplify the code, we prevent matches with the string
+       * of window index 0 (in particular we have to avoid a match
+       * of the string with itself at the start of the input file).
+       */
+      s.match_length = longest_match(s, hash_head);
+      /* longest_match() sets match_start */
+    }
+    if (s.match_length >= MIN_MATCH) {
+      // check_match(s, s.strstart, s.match_start, s.match_length); // for debug only
+
+      /*** _tr_tally_dist(s, s.strstart - s.match_start,
+                     s.match_length - MIN_MATCH, bflush); ***/
+      bflush = _tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH);
+
+      s.lookahead -= s.match_length;
+
+      /* Insert new strings in the hash table only if the match length
+       * is not too large. This saves time but degrades compression.
+       */
+      if (s.match_length <= s.max_lazy_match/*max_insert_length*/ && s.lookahead >= MIN_MATCH) {
+        s.match_length--; /* string at strstart already in table */
+        do {
+          s.strstart++;
+          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
+          s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);
+          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
+          s.head[s.ins_h] = s.strstart;
+          /***/
+          /* strstart never exceeds WSIZE-MAX_MATCH, so there are
+           * always MIN_MATCH bytes ahead.
+           */
+        } while (--s.match_length !== 0);
+        s.strstart++;
+      } else
+      {
+        s.strstart += s.match_length;
+        s.match_length = 0;
+        s.ins_h = s.window[s.strstart];
+        /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */
+        s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + 1]);
+
+//#if MIN_MATCH != 3
+//                Call UPDATE_HASH() MIN_MATCH-3 more times
+//#endif
+        /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
+         * matter since it will be recomputed at next deflate call.
+         */
+      }
+    } else {
+      /* No match, output a literal byte */
+      //Tracevv((stderr,"%c", s.window[s.strstart]));
+      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
+      bflush = _tr_tally(s, 0, s.window[s.strstart]);
+
+      s.lookahead--;
+      s.strstart++;
+    }
+    if (bflush) {
+      /*** FLUSH_BLOCK(s, 0); ***/
+      flush_block_only(s, false);
+      if (s.strm.avail_out === 0) {
+        return BS_NEED_MORE;
+      }
+      /***/
+    }
+  }
+  s.insert = ((s.strstart < (MIN_MATCH - 1)) ? s.strstart : MIN_MATCH - 1);
+  if (flush === Z_FINISH$3) {
+    /*** FLUSH_BLOCK(s, 1); ***/
+    flush_block_only(s, true);
+    if (s.strm.avail_out === 0) {
+      return BS_FINISH_STARTED;
+    }
+    /***/
+    return BS_FINISH_DONE;
+  }
+  if (s.sym_next) {
+    /*** FLUSH_BLOCK(s, 0); ***/
+    flush_block_only(s, false);
+    if (s.strm.avail_out === 0) {
+      return BS_NEED_MORE;
+    }
+    /***/
+  }
+  return BS_BLOCK_DONE;
+};
+
+/* ===========================================================================
+ * Same as above, but achieves better compression. We use a lazy
+ * evaluation for matches: a match is finally adopted only if there is
+ * no better match at the next window position.
+ */
+const deflate_slow = (s, flush) => {
+
+  let hash_head;          /* head of hash chain */
+  let bflush;              /* set if current block must be flushed */
+
+  let max_insert;
+
+  /* Process the input block. */
+  for (;;) {
+    /* Make sure that we always have enough lookahead, except
+     * at the end of the input file. We need MAX_MATCH bytes
+     * for the next match, plus MIN_MATCH bytes to insert the
+     * string following the next match.
+     */
+    if (s.lookahead < MIN_LOOKAHEAD) {
+      fill_window(s);
+      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH$2) {
+        return BS_NEED_MORE;
+      }
+      if (s.lookahead === 0) { break; } /* flush the current block */
+    }
+
+    /* Insert the string window[strstart .. strstart+2] in the
+     * dictionary, and set hash_head to the head of the hash chain:
+     */
+    hash_head = 0/*NIL*/;
+    if (s.lookahead >= MIN_MATCH) {
+      /*** INSERT_STRING(s, s.strstart, hash_head); ***/
+      s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);
+      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
+      s.head[s.ins_h] = s.strstart;
+      /***/
+    }
+
+    /* Find the longest match, discarding those <= prev_length.
+     */
+    s.prev_length = s.match_length;
+    s.prev_match = s.match_start;
+    s.match_length = MIN_MATCH - 1;
+
+    if (hash_head !== 0/*NIL*/ && s.prev_length < s.max_lazy_match &&
+        s.strstart - hash_head <= (s.w_size - MIN_LOOKAHEAD)/*MAX_DIST(s)*/) {
+      /* To simplify the code, we prevent matches with the string
+       * of window index 0 (in particular we have to avoid a match
+       * of the string with itself at the start of the input file).
+       */
+      s.match_length = longest_match(s, hash_head);
+      /* longest_match() sets match_start */
+
+      if (s.match_length <= 5 &&
+         (s.strategy === Z_FILTERED || (s.match_length === MIN_MATCH && s.strstart - s.match_start > 4096/*TOO_FAR*/))) {
+
+        /* If prev_match is also MIN_MATCH, match_start is garbage
+         * but we will ignore the current match anyway.
+         */
+        s.match_length = MIN_MATCH - 1;
+      }
+    }
+    /* If there was a match at the previous step and the current
+     * match is not better, output the previous match:
+     */
+    if (s.prev_length >= MIN_MATCH && s.match_length <= s.prev_length) {
+      max_insert = s.strstart + s.lookahead - MIN_MATCH;
+      /* Do not insert strings in hash table beyond this. */
+
+      //check_match(s, s.strstart-1, s.prev_match, s.prev_length);
+
+      /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match,
+                     s.prev_length - MIN_MATCH, bflush);***/
+      bflush = _tr_tally(s, s.strstart - 1 - s.prev_match, s.prev_length - MIN_MATCH);
+      /* Insert in hash table all strings up to the end of the match.
+       * strstart-1 and strstart are already inserted. If there is not
+       * enough lookahead, the last two strings are not inserted in
+       * the hash table.
+       */
+      s.lookahead -= s.prev_length - 1;
+      s.prev_length -= 2;
+      do {
+        if (++s.strstart <= max_insert) {
+          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
+          s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);
+          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
+          s.head[s.ins_h] = s.strstart;
+          /***/
+        }
+      } while (--s.prev_length !== 0);
+      s.match_available = 0;
+      s.match_length = MIN_MATCH - 1;
+      s.strstart++;
+
+      if (bflush) {
+        /*** FLUSH_BLOCK(s, 0); ***/
+        flush_block_only(s, false);
+        if (s.strm.avail_out === 0) {
+          return BS_NEED_MORE;
+        }
+        /***/
+      }
+
+    } else if (s.match_available) {
+      /* If there was no match at the previous position, output a
+       * single literal. If there was a match but the current match
+       * is longer, truncate the previous match to a single literal.
+       */
+      //Tracevv((stderr,"%c", s->window[s->strstart-1]));
+      /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
+      bflush = _tr_tally(s, 0, s.window[s.strstart - 1]);
+
+      if (bflush) {
+        /*** FLUSH_BLOCK_ONLY(s, 0) ***/
+        flush_block_only(s, false);
+        /***/
+      }
+      s.strstart++;
+      s.lookahead--;
+      if (s.strm.avail_out === 0) {
+        return BS_NEED_MORE;
+      }
+    } else {
+      /* There is no previous match to compare with, wait for
+       * the next step to decide.
+       */
+      s.match_available = 1;
+      s.strstart++;
+      s.lookahead--;
+    }
+  }
+  //Assert (flush != Z_NO_FLUSH, "no flush?");
+  if (s.match_available) {
+    //Tracevv((stderr,"%c", s->window[s->strstart-1]));
+    /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
+    bflush = _tr_tally(s, 0, s.window[s.strstart - 1]);
+
+    s.match_available = 0;
+  }
+  s.insert = s.strstart < MIN_MATCH - 1 ? s.strstart : MIN_MATCH - 1;
+  if (flush === Z_FINISH$3) {
+    /*** FLUSH_BLOCK(s, 1); ***/
+    flush_block_only(s, true);
+    if (s.strm.avail_out === 0) {
+      return BS_FINISH_STARTED;
+    }
+    /***/
+    return BS_FINISH_DONE;
+  }
+  if (s.sym_next) {
+    /*** FLUSH_BLOCK(s, 0); ***/
+    flush_block_only(s, false);
+    if (s.strm.avail_out === 0) {
+      return BS_NEED_MORE;
+    }
+    /***/
+  }
+
+  return BS_BLOCK_DONE;
+};
+
+
+/* ===========================================================================
+ * For Z_RLE, simply look for runs of bytes, generate matches only of distance
+ * one.  Do not maintain a hash table.  (It will be regenerated if this run of
+ * deflate switches away from Z_RLE.)
+ */
+const deflate_rle = (s, flush) => {
+
+  let bflush;            /* set if current block must be flushed */
+  let prev;              /* byte at distance one to match */
+  let scan, strend;      /* scan goes up to strend for length of run */
+
+  const _win = s.window;
+
+  for (;;) {
+    /* Make sure that we always have enough lookahead, except
+     * at the end of the input file. We need MAX_MATCH bytes
+     * for the longest run, plus one for the unrolled loop.
+     */
+    if (s.lookahead <= MAX_MATCH) {
+      fill_window(s);
+      if (s.lookahead <= MAX_MATCH && flush === Z_NO_FLUSH$2) {
+        return BS_NEED_MORE;
+      }
+      if (s.lookahead === 0) { break; } /* flush the current block */
+    }
+
+    /* See how many times the previous byte repeats */
+    s.match_length = 0;
+    if (s.lookahead >= MIN_MATCH && s.strstart > 0) {
+      scan = s.strstart - 1;
+      prev = _win[scan];
+      if (prev === _win[++scan] && prev === _win[++scan] && prev === _win[++scan]) {
+        strend = s.strstart + MAX_MATCH;
+        do {
+          /*jshint noempty:false*/
+        } while (prev === _win[++scan] && prev === _win[++scan] &&
+                 prev === _win[++scan] && prev === _win[++scan] &&
+                 prev === _win[++scan] && prev === _win[++scan] &&
+                 prev === _win[++scan] && prev === _win[++scan] &&
+                 scan < strend);
+        s.match_length = MAX_MATCH - (strend - scan);
+        if (s.match_length > s.lookahead) {
+          s.match_length = s.lookahead;
+        }
+      }
+      //Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan");
+    }
+
+    /* Emit match if have run of MIN_MATCH or longer, else emit literal */
+    if (s.match_length >= MIN_MATCH) {
+      //check_match(s, s.strstart, s.strstart - 1, s.match_length);
+
+      /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/
+      bflush = _tr_tally(s, 1, s.match_length - MIN_MATCH);
+
+      s.lookahead -= s.match_length;
+      s.strstart += s.match_length;
+      s.match_length = 0;
+    } else {
+      /* No match, output a literal byte */
+      //Tracevv((stderr,"%c", s->window[s->strstart]));
+      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
+      bflush = _tr_tally(s, 0, s.window[s.strstart]);
+
+      s.lookahead--;
+      s.strstart++;
+    }
+    if (bflush) {
+      /*** FLUSH_BLOCK(s, 0); ***/
+      flush_block_only(s, false);
+      if (s.strm.avail_out === 0) {
+        return BS_NEED_MORE;
+      }
+      /***/
+    }
+  }
+  s.insert = 0;
+  if (flush === Z_FINISH$3) {
+    /*** FLUSH_BLOCK(s, 1); ***/
+    flush_block_only(s, true);
+    if (s.strm.avail_out === 0) {
+      return BS_FINISH_STARTED;
+    }
+    /***/
+    return BS_FINISH_DONE;
+  }
+  if (s.sym_next) {
+    /*** FLUSH_BLOCK(s, 0); ***/
+    flush_block_only(s, false);
+    if (s.strm.avail_out === 0) {
+      return BS_NEED_MORE;
+    }
+    /***/
+  }
+  return BS_BLOCK_DONE;
+};
+
+/* ===========================================================================
+ * For Z_HUFFMAN_ONLY, do not look for matches.  Do not maintain a hash table.
+ * (It will be regenerated if this run of deflate switches away from Huffman.)
+ */
+const deflate_huff = (s, flush) => {
+
+  let bflush;             /* set if current block must be flushed */
+
+  for (;;) {
+    /* Make sure that we have a literal to write. */
+    if (s.lookahead === 0) {
+      fill_window(s);
+      if (s.lookahead === 0) {
+        if (flush === Z_NO_FLUSH$2) {
+          return BS_NEED_MORE;
+        }
+        break;      /* flush the current block */
+      }
+    }
+
+    /* Output a literal byte */
+    s.match_length = 0;
+    //Tracevv((stderr,"%c", s->window[s->strstart]));
+    /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
+    bflush = _tr_tally(s, 0, s.window[s.strstart]);
+    s.lookahead--;
+    s.strstart++;
+    if (bflush) {
+      /*** FLUSH_BLOCK(s, 0); ***/
+      flush_block_only(s, false);
+      if (s.strm.avail_out === 0) {
+        return BS_NEED_MORE;
+      }
+      /***/
+    }
+  }
+  s.insert = 0;
+  if (flush === Z_FINISH$3) {
+    /*** FLUSH_BLOCK(s, 1); ***/
+    flush_block_only(s, true);
+    if (s.strm.avail_out === 0) {
+      return BS_FINISH_STARTED;
+    }
+    /***/
+    return BS_FINISH_DONE;
+  }
+  if (s.sym_next) {
+    /*** FLUSH_BLOCK(s, 0); ***/
+    flush_block_only(s, false);
+    if (s.strm.avail_out === 0) {
+      return BS_NEED_MORE;
+    }
+    /***/
+  }
+  return BS_BLOCK_DONE;
+};
+
+/* Values for max_lazy_match, good_match and max_chain_length, depending on
+ * the desired pack level (0..9). The values given below have been tuned to
+ * exclude worst case performance for pathological files. Better values may be
+ * found for specific files.
+ */
+function Config(good_length, max_lazy, nice_length, max_chain, func) {
+
+  this.good_length = good_length;
+  this.max_lazy = max_lazy;
+  this.nice_length = nice_length;
+  this.max_chain = max_chain;
+  this.func = func;
+}
+
+const configuration_table = [
+  /*      good lazy nice chain */
+  new Config(0, 0, 0, 0, deflate_stored),          /* 0 store only */
+  new Config(4, 4, 8, 4, deflate_fast),            /* 1 max speed, no lazy matches */
+  new Config(4, 5, 16, 8, deflate_fast),           /* 2 */
+  new Config(4, 6, 32, 32, deflate_fast),          /* 3 */
+
+  new Config(4, 4, 16, 16, deflate_slow),          /* 4 lazy matches */
+  new Config(8, 16, 32, 32, deflate_slow),         /* 5 */
+  new Config(8, 16, 128, 128, deflate_slow),       /* 6 */
+  new Config(8, 32, 128, 256, deflate_slow),       /* 7 */
+  new Config(32, 128, 258, 1024, deflate_slow),    /* 8 */
+  new Config(32, 258, 258, 4096, deflate_slow)     /* 9 max compression */
+];
+
+
+/* ===========================================================================
+ * Initialize the "longest match" routines for a new zlib stream
+ */
+const lm_init = (s) => {
+
+  s.window_size = 2 * s.w_size;
+
+  /*** CLEAR_HASH(s); ***/
+  zero(s.head); // Fill with NIL (= 0);
+
+  /* Set the default configuration parameters:
+   */
+  s.max_lazy_match = configuration_table[s.level].max_lazy;
+  s.good_match = configuration_table[s.level].good_length;
+  s.nice_match = configuration_table[s.level].nice_length;
+  s.max_chain_length = configuration_table[s.level].max_chain;
+
+  s.strstart = 0;
+  s.block_start = 0;
+  s.lookahead = 0;
+  s.insert = 0;
+  s.match_length = s.prev_length = MIN_MATCH - 1;
+  s.match_available = 0;
+  s.ins_h = 0;
+};
+
+
+function DeflateState() {
+  this.strm = null;            /* pointer back to this zlib stream */
+  this.status = 0;            /* as the name implies */
+  this.pending_buf = null;      /* output still pending */
+  this.pending_buf_size = 0;  /* size of pending_buf */
+  this.pending_out = 0;       /* next pending byte to output to the stream */
+  this.pending = 0;           /* nb of bytes in the pending buffer */
+  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */
+  this.gzhead = null;         /* gzip header information to write */
+  this.gzindex = 0;           /* where in extra, name, or comment */
+  this.method = Z_DEFLATED$2; /* can only be DEFLATED */
+  this.last_flush = -1;   /* value of flush param for previous deflate call */
+
+  this.w_size = 0;  /* LZ77 window size (32K by default) */
+  this.w_bits = 0;  /* log2(w_size)  (8..16) */
+  this.w_mask = 0;  /* w_size - 1 */
+
+  this.window = null;
+  /* Sliding window. Input bytes are read into the second half of the window,
+   * and move to the first half later to keep a dictionary of at least wSize
+   * bytes. With this organization, matches are limited to a distance of
+   * wSize-MAX_MATCH bytes, but this ensures that IO is always
+   * performed with a length multiple of the block size.
+   */
+
+  this.window_size = 0;
+  /* Actual size of window: 2*wSize, except when the user input buffer
+   * is directly used as sliding window.
+   */
+
+  this.prev = null;
+  /* Link to older string with same hash index. To limit the size of this
+   * array to 64K, this link is maintained only for the last 32K strings.
+   * An index in this array is thus a window index modulo 32K.
+   */
+
+  this.head = null;   /* Heads of the hash chains or NIL. */
+
+  this.ins_h = 0;       /* hash index of string to be inserted */
+  this.hash_size = 0;   /* number of elements in hash table */
+  this.hash_bits = 0;   /* log2(hash_size) */
+  this.hash_mask = 0;   /* hash_size-1 */
+
+  this.hash_shift = 0;
+  /* Number of bits by which ins_h must be shifted at each input
+   * step. It must be such that after MIN_MATCH steps, the oldest
+   * byte no longer takes part in the hash key, that is:
+   *   hash_shift * MIN_MATCH >= hash_bits
+   */
+
+  this.block_start = 0;
+  /* Window position at the beginning of the current output block. Gets
+   * negative when the window is moved backwards.
+   */
+
+  this.match_length = 0;      /* length of best match */
+  this.prev_match = 0;        /* previous match */
+  this.match_available = 0;   /* set if previous match exists */
+  this.strstart = 0;          /* start of string to insert */
+  this.match_start = 0;       /* start of matching string */
+  this.lookahead = 0;         /* number of valid bytes ahead in window */
+
+  this.prev_length = 0;
+  /* Length of the best match at previous step. Matches not greater than this
+   * are discarded. This is used in the lazy match evaluation.
+   */
+
+  this.max_chain_length = 0;
+  /* To speed up deflation, hash chains are never searched beyond this
+   * length.  A higher limit improves compression ratio but degrades the
+   * speed.
+   */
+
+  this.max_lazy_match = 0;
+  /* Attempt to find a better match only when the current match is strictly
+   * smaller than this value. This mechanism is used only for compression
+   * levels >= 4.
+   */
+  // That's alias to max_lazy_match, don't use directly
+  //this.max_insert_length = 0;
+  /* Insert new strings in the hash table only if the match length is not
+   * greater than this length. This saves time but degrades compression.
+   * max_insert_length is used only for compression levels <= 3.
+   */
+
+  this.level = 0;     /* compression level (1..9) */
+  this.strategy = 0;  /* favor or force Huffman coding*/
+
+  this.good_match = 0;
+  /* Use a faster search when the previous match is longer than this */
+
+  this.nice_match = 0; /* Stop searching when current match exceeds this */
+
+              /* used by trees.c: */
+
+  /* Didn't use ct_data typedef below to suppress compiler warning */
+
+  // struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */
+  // struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
+  // struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */
+
+  // Use flat array of DOUBLE size, with interleaved fata,
+  // because JS does not support effective
+  this.dyn_ltree  = new Uint16Array(HEAP_SIZE * 2);
+  this.dyn_dtree  = new Uint16Array((2 * D_CODES + 1) * 2);
+  this.bl_tree    = new Uint16Array((2 * BL_CODES + 1) * 2);
+  zero(this.dyn_ltree);
+  zero(this.dyn_dtree);
+  zero(this.bl_tree);
+
+  this.l_desc   = null;         /* desc. for literal tree */
+  this.d_desc   = null;         /* desc. for distance tree */
+  this.bl_desc  = null;         /* desc. for bit length tree */
+
+  //ush bl_count[MAX_BITS+1];
+  this.bl_count = new Uint16Array(MAX_BITS + 1);
+  /* number of codes at each bit length for an optimal tree */
+
+  //int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */
+  this.heap = new Uint16Array(2 * L_CODES + 1);  /* heap used to build the Huffman trees */
+  zero(this.heap);
+
+  this.heap_len = 0;               /* number of elements in the heap */
+  this.heap_max = 0;               /* element of largest frequency */
+  /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
+   * The same heap array is used to build all trees.
+   */
+
+  this.depth = new Uint16Array(2 * L_CODES + 1); //uch depth[2*L_CODES+1];
+  zero(this.depth);
+  /* Depth of each subtree used as tie breaker for trees of equal frequency
+   */
+
+  this.sym_buf = 0;        /* buffer for distances and literals/lengths */
+
+  this.lit_bufsize = 0;
+  /* Size of match buffer for literals/lengths.  There are 4 reasons for
+   * limiting lit_bufsize to 64K:
+   *   - frequencies can be kept in 16 bit counters
+   *   - if compression is not successful for the first block, all input
+   *     data is still in the window so we can still emit a stored block even
+   *     when input comes from standard input.  (This can also be done for
+   *     all blocks if lit_bufsize is not greater than 32K.)
+   *   - if compression is not successful for a file smaller than 64K, we can
+   *     even emit a stored file instead of a stored block (saving 5 bytes).
+   *     This is applicable only for zip (not gzip or zlib).
+   *   - creating new Huffman trees less frequently may not provide fast
+   *     adaptation to changes in the input data statistics. (Take for
+   *     example a binary file with poorly compressible code followed by
+   *     a highly compressible string table.) Smaller buffer sizes give
+   *     fast adaptation but have of course the overhead of transmitting
+   *     trees more frequently.
+   *   - I can't count above 4
+   */
+
+  this.sym_next = 0;      /* running index in sym_buf */
+  this.sym_end = 0;       /* symbol table full when sym_next reaches this */
+
+  this.opt_len = 0;       /* bit length of current block with optimal trees */
+  this.static_len = 0;    /* bit length of current block with static trees */
+  this.matches = 0;       /* number of string matches in current block */
+  this.insert = 0;        /* bytes at end of window left to insert */
+
+
+  this.bi_buf = 0;
+  /* Output buffer. bits are inserted starting at the bottom (least
+   * significant bits).
+   */
+  this.bi_valid = 0;
+  /* Number of valid bits in bi_buf.  All bits above the last valid bit
+   * are always zero.
+   */
+
+  // Used for window memory init. We safely ignore it for JS. That makes
+  // sense only for pointers and memory check tools.
+  //this.high_water = 0;
+  /* High water mark offset in window for initialized bytes -- bytes above
+   * this are set to zero in order to avoid memory check warnings when
+   * longest match routines access bytes past the input.  This is then
+   * updated to the new high water mark.
+   */
+}
+
+
+/* =========================================================================
+ * Check for a valid deflate stream state. Return 0 if ok, 1 if not.
+ */
+const deflateStateCheck = (strm) => {
+
+  if (!strm) {
+    return 1;
+  }
+  const s = strm.state;
+  if (!s || s.strm !== strm || (s.status !== INIT_STATE &&
+//#ifdef GZIP
+                                s.status !== GZIP_STATE &&
+//#endif
+                                s.status !== EXTRA_STATE &&
+                                s.status !== NAME_STATE &&
+                                s.status !== COMMENT_STATE &&
+                                s.status !== HCRC_STATE &&
+                                s.status !== BUSY_STATE &&
+                                s.status !== FINISH_STATE)) {
+    return 1;
+  }
+  return 0;
+};
+
+
+const deflateResetKeep = (strm) => {
+
+  if (deflateStateCheck(strm)) {
+    return err(strm, Z_STREAM_ERROR$2);
+  }
+
+  strm.total_in = strm.total_out = 0;
+  strm.data_type = Z_UNKNOWN;
+
+  const s = strm.state;
+  s.pending = 0;
+  s.pending_out = 0;
+
+  if (s.wrap < 0) {
+    s.wrap = -s.wrap;
+    /* was made negative by deflate(..., Z_FINISH); */
+  }
+  s.status =
+//#ifdef GZIP
+    s.wrap === 2 ? GZIP_STATE :
+//#endif
+    s.wrap ? INIT_STATE : BUSY_STATE;
+  strm.adler = (s.wrap === 2) ?
+    0  // crc32(0, Z_NULL, 0)
+  :
+    1; // adler32(0, Z_NULL, 0)
+  s.last_flush = -2;
+  _tr_init(s);
+  return Z_OK$3;
+};
+
+
+const deflateReset = (strm) => {
+
+  const ret = deflateResetKeep(strm);
+  if (ret === Z_OK$3) {
+    lm_init(strm.state);
+  }
+  return ret;
+};
+
+
+const deflateSetHeader = (strm, head) => {
+
+  if (deflateStateCheck(strm) || strm.state.wrap !== 2) {
+    return Z_STREAM_ERROR$2;
+  }
+  strm.state.gzhead = head;
+  return Z_OK$3;
+};
+
+
+const deflateInit2 = (strm, level, method, windowBits, memLevel, strategy) => {
+
+  if (!strm) { // === Z_NULL
+    return Z_STREAM_ERROR$2;
+  }
+  let wrap = 1;
+
+  if (level === Z_DEFAULT_COMPRESSION$1) {
+    level = 6;
+  }
+
+  if (windowBits < 0) { /* suppress zlib wrapper */
+    wrap = 0;
+    windowBits = -windowBits;
+  }
+
+  else if (windowBits > 15) {
+    wrap = 2;           /* write gzip wrapper instead */
+    windowBits -= 16;
+  }
+
+
+  if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method !== Z_DEFLATED$2 ||
+    windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||
+    strategy < 0 || strategy > Z_FIXED || (windowBits === 8 && wrap !== 1)) {
+    return err(strm, Z_STREAM_ERROR$2);
+  }
+
+
+  if (windowBits === 8) {
+    windowBits = 9;
+  }
+  /* until 256-byte window bug fixed */
+
+  const s = new DeflateState();
+
+  strm.state = s;
+  s.strm = strm;
+  s.status = INIT_STATE;     /* to pass state test in deflateReset() */
+
+  s.wrap = wrap;
+  s.gzhead = null;
+  s.w_bits = windowBits;
+  s.w_size = 1 << s.w_bits;
+  s.w_mask = s.w_size - 1;
+
+  s.hash_bits = memLevel + 7;
+  s.hash_size = 1 << s.hash_bits;
+  s.hash_mask = s.hash_size - 1;
+  s.hash_shift = ~~((s.hash_bits + MIN_MATCH - 1) / MIN_MATCH);
+
+  s.window = new Uint8Array(s.w_size * 2);
+  s.head = new Uint16Array(s.hash_size);
+  s.prev = new Uint16Array(s.w_size);
+
+  // Don't need mem init magic for JS.
+  //s.high_water = 0;  /* nothing written to s->window yet */
+
+  s.lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */
+
+  /* We overlay pending_buf and sym_buf. This works since the average size
+   * for length/distance pairs over any compressed block is assured to be 31
+   * bits or less.
+   *
+   * Analysis: The longest fixed codes are a length code of 8 bits plus 5
+   * extra bits, for lengths 131 to 257. The longest fixed distance codes are
+   * 5 bits plus 13 extra bits, for distances 16385 to 32768. The longest
+   * possible fixed-codes length/distance pair is then 31 bits total.
+   *
+   * sym_buf starts one-fourth of the way into pending_buf. So there are
+   * three bytes in sym_buf for every four bytes in pending_buf. Each symbol
+   * in sym_buf is three bytes -- two for the distance and one for the
+   * literal/length. As each symbol is consumed, the pointer to the next
+   * sym_buf value to read moves forward three bytes. From that symbol, up to
+   * 31 bits are written to pending_buf. The closest the written pending_buf
+   * bits gets to the next sym_buf symbol to read is just before the last
+   * code is written. At that time, 31*(n-2) bits have been written, just
+   * after 24*(n-2) bits have been consumed from sym_buf. sym_buf starts at
+   * 8*n bits into pending_buf. (Note that the symbol buffer fills when n-1
+   * symbols are written.) The closest the writing gets to what is unread is
+   * then n+14 bits. Here n is lit_bufsize, which is 16384 by default, and
+   * can range from 128 to 32768.
+   *
+   * Therefore, at a minimum, there are 142 bits of space between what is
+   * written and what is read in the overlain buffers, so the symbols cannot
+   * be overwritten by the compressed data. That space is actually 139 bits,
+   * due to the three-bit fixed-code block header.
+   *
+   * That covers the case where either Z_FIXED is specified, forcing fixed
+   * codes, or when the use of fixed codes is chosen, because that choice
+   * results in a smaller compressed block than dynamic codes. That latter
+   * condition then assures that the above analysis also covers all dynamic
+   * blocks. A dynamic-code block will only be chosen to be emitted if it has
+   * fewer bits than a fixed-code block would for the same set of symbols.
+   * Therefore its average symbol length is assured to be less than 31. So
+   * the compressed data for a dynamic block also cannot overwrite the
+   * symbols from which it is being constructed.
+   */
+
+  s.pending_buf_size = s.lit_bufsize * 4;
+  s.pending_buf = new Uint8Array(s.pending_buf_size);
+
+  // It is offset from `s.pending_buf` (size is `s.lit_bufsize * 2`)
+  //s->sym_buf = s->pending_buf + s->lit_bufsize;
+  s.sym_buf = s.lit_bufsize;
+
+  //s->sym_end = (s->lit_bufsize - 1) * 3;
+  s.sym_end = (s.lit_bufsize - 1) * 3;
+  /* We avoid equality with lit_bufsize*3 because of wraparound at 64K
+   * on 16 bit machines and because stored blocks are restricted to
+   * 64K-1 bytes.
+   */
+
+  s.level = level;
+  s.strategy = strategy;
+  s.method = method;
+
+  return deflateReset(strm);
+};
+
+const deflateInit = (strm, level) => {
+
+  return deflateInit2(strm, level, Z_DEFLATED$2, MAX_WBITS$1, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY$1);
+};
+
+
+/* ========================================================================= */
+const deflate$2 = (strm, flush) => {
+
+  if (deflateStateCheck(strm) || flush > Z_BLOCK$1 || flush < 0) {
+    return strm ? err(strm, Z_STREAM_ERROR$2) : Z_STREAM_ERROR$2;
+  }
+
+  const s = strm.state;
+
+  if (!strm.output ||
+      (strm.avail_in !== 0 && !strm.input) ||
+      (s.status === FINISH_STATE && flush !== Z_FINISH$3)) {
+    return err(strm, (strm.avail_out === 0) ? Z_BUF_ERROR$1 : Z_STREAM_ERROR$2);
+  }
+
+  const old_flush = s.last_flush;
+  s.last_flush = flush;
+
+  /* Flush as much pending output as possible */
+  if (s.pending !== 0) {
+    flush_pending(strm);
+    if (strm.avail_out === 0) {
+      /* Since avail_out is 0, deflate will be called again with
+       * more output space, but possibly with both pending and
+       * avail_in equal to zero. There won't be anything to do,
+       * but this is not an error situation so make sure we
+       * return OK instead of BUF_ERROR at next call of deflate:
+       */
+      s.last_flush = -1;
+      return Z_OK$3;
+    }
+
+    /* Make sure there is something to do and avoid duplicate consecutive
+     * flushes. For repeated and useless calls with Z_FINISH, we keep
+     * returning Z_STREAM_END instead of Z_BUF_ERROR.
+     */
+  } else if (strm.avail_in === 0 && rank(flush) <= rank(old_flush) &&
+    flush !== Z_FINISH$3) {
+    return err(strm, Z_BUF_ERROR$1);
+  }
+
+  /* User must not provide more input after the first FINISH: */
+  if (s.status === FINISH_STATE && strm.avail_in !== 0) {
+    return err(strm, Z_BUF_ERROR$1);
+  }
+
+  /* Write the header */
+  if (s.status === INIT_STATE && s.wrap === 0) {
+    s.status = BUSY_STATE;
+  }
+  if (s.status === INIT_STATE) {
+    /* zlib header */
+    let header = (Z_DEFLATED$2 + ((s.w_bits - 8) << 4)) << 8;
+    let level_flags = -1;
+
+    if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) {
+      level_flags = 0;
+    } else if (s.level < 6) {
+      level_flags = 1;
+    } else if (s.level === 6) {
+      level_flags = 2;
+    } else {
+      level_flags = 3;
+    }
+    header |= (level_flags << 6);
+    if (s.strstart !== 0) { header |= PRESET_DICT; }
+    header += 31 - (header % 31);
+
+    putShortMSB(s, header);
+
+    /* Save the adler32 of the preset dictionary: */
+    if (s.strstart !== 0) {
+      putShortMSB(s, strm.adler >>> 16);
+      putShortMSB(s, strm.adler & 0xffff);
+    }
+    strm.adler = 1; // adler32(0L, Z_NULL, 0);
+    s.status = BUSY_STATE;
+
+    /* Compression must start with an empty pending buffer */
+    flush_pending(strm);
+    if (s.pending !== 0) {
+      s.last_flush = -1;
+      return Z_OK$3;
+    }
+  }
+//#ifdef GZIP
+  if (s.status === GZIP_STATE) {
+    /* gzip header */
+    strm.adler = 0;  //crc32(0L, Z_NULL, 0);
+    put_byte(s, 31);
+    put_byte(s, 139);
+    put_byte(s, 8);
+    if (!s.gzhead) { // s->gzhead == Z_NULL
+      put_byte(s, 0);
+      put_byte(s, 0);
+      put_byte(s, 0);
+      put_byte(s, 0);
+      put_byte(s, 0);
+      put_byte(s, s.level === 9 ? 2 :
+                  (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
+                   4 : 0));
+      put_byte(s, OS_CODE);
+      s.status = BUSY_STATE;
+
+      /* Compression must start with an empty pending buffer */
+      flush_pending(strm);
+      if (s.pending !== 0) {
+        s.last_flush = -1;
+        return Z_OK$3;
+      }
+    }
+    else {
+      put_byte(s, (s.gzhead.text ? 1 : 0) +
+                  (s.gzhead.hcrc ? 2 : 0) +
+                  (!s.gzhead.extra ? 0 : 4) +
+                  (!s.gzhead.name ? 0 : 8) +
+                  (!s.gzhead.comment ? 0 : 16)
+      );
+      put_byte(s, s.gzhead.time & 0xff);
+      put_byte(s, (s.gzhead.time >> 8) & 0xff);
+      put_byte(s, (s.gzhead.time >> 16) & 0xff);
+      put_byte(s, (s.gzhead.time >> 24) & 0xff);
+      put_byte(s, s.level === 9 ? 2 :
+                  (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
+                   4 : 0));
+      put_byte(s, s.gzhead.os & 0xff);
+      if (s.gzhead.extra && s.gzhead.extra.length) {
+        put_byte(s, s.gzhead.extra.length & 0xff);
+        put_byte(s, (s.gzhead.extra.length >> 8) & 0xff);
+      }
+      if (s.gzhead.hcrc) {
+        strm.adler = crc32_1$1(strm.adler, s.pending_buf, s.pending, 0);
+      }
+      s.gzindex = 0;
+      s.status = EXTRA_STATE;
+    }
+  }
+  if (s.status === EXTRA_STATE) {
+    if (s.gzhead.extra/* != Z_NULL*/) {
+      let beg = s.pending;   /* start of bytes to update crc */
+      let left = (s.gzhead.extra.length & 0xffff) - s.gzindex;
+      while (s.pending + left > s.pending_buf_size) {
+        let copy = s.pending_buf_size - s.pending;
+        // zmemcpy(s.pending_buf + s.pending,
+        //    s.gzhead.extra + s.gzindex, copy);
+        s.pending_buf.set(s.gzhead.extra.subarray(s.gzindex, s.gzindex + copy), s.pending);
+        s.pending = s.pending_buf_size;
+        //--- HCRC_UPDATE(beg) ---//
+        if (s.gzhead.hcrc && s.pending > beg) {
+          strm.adler = crc32_1$1(strm.adler, s.pending_buf, s.pending - beg, beg);
+        }
+        //---//
+        s.gzindex += copy;
+        flush_pending(strm);
+        if (s.pending !== 0) {
+          s.last_flush = -1;
+          return Z_OK$3;
+        }
+        beg = 0;
+        left -= copy;
+      }
+      // JS specific: s.gzhead.extra may be TypedArray or Array for backward compatibility
+      //              TypedArray.slice and TypedArray.from don't exist in IE10-IE11
+      let gzhead_extra = new Uint8Array(s.gzhead.extra);
+      // zmemcpy(s->pending_buf + s->pending,
+      //     s->gzhead->extra + s->gzindex, left);
+      s.pending_buf.set(gzhead_extra.subarray(s.gzindex, s.gzindex + left), s.pending);
+      s.pending += left;
+      //--- HCRC_UPDATE(beg) ---//
+      if (s.gzhead.hcrc && s.pending > beg) {
+        strm.adler = crc32_1$1(strm.adler, s.pending_buf, s.pending - beg, beg);
+      }
+      //---//
+      s.gzindex = 0;
+    }
+    s.status = NAME_STATE;
+  }
+  if (s.status === NAME_STATE) {
+    if (s.gzhead.name/* != Z_NULL*/) {
+      let beg = s.pending;   /* start of bytes to update crc */
+      let val;
+      do {
+        if (s.pending === s.pending_buf_size) {
+          //--- HCRC_UPDATE(beg) ---//
+          if (s.gzhead.hcrc && s.pending > beg) {
+            strm.adler = crc32_1$1(strm.adler, s.pending_buf, s.pending - beg, beg);
+          }
+          //---//
+          flush_pending(strm);
+          if (s.pending !== 0) {
+            s.last_flush = -1;
+            return Z_OK$3;
+          }
+          beg = 0;
+        }
+        // JS specific: little magic to add zero terminator to end of string
+        if (s.gzindex < s.gzhead.name.length) {
+          val = s.gzhead.name.charCodeAt(s.gzindex++) & 0xff;
+        } else {
+          val = 0;
+        }
+        put_byte(s, val);
+      } while (val !== 0);
+      //--- HCRC_UPDATE(beg) ---//
+      if (s.gzhead.hcrc && s.pending > beg) {
+        strm.adler = crc32_1$1(strm.adler, s.pending_buf, s.pending - beg, beg);
+      }
+      //---//
+      s.gzindex = 0;
+    }
+    s.status = COMMENT_STATE;
+  }
+  if (s.status === COMMENT_STATE) {
+    if (s.gzhead.comment/* != Z_NULL*/) {
+      let beg = s.pending;   /* start of bytes to update crc */
+      let val;
+      do {
+        if (s.pending === s.pending_buf_size) {
+          //--- HCRC_UPDATE(beg) ---//
+          if (s.gzhead.hcrc && s.pending > beg) {
+            strm.adler = crc32_1$1(strm.adler, s.pending_buf, s.pending - beg, beg);
+          }
+          //---//
+          flush_pending(strm);
+          if (s.pending !== 0) {
+            s.last_flush = -1;
+            return Z_OK$3;
+          }
+          beg = 0;
+        }
+        // JS specific: little magic to add zero terminator to end of string
+        if (s.gzindex < s.gzhead.comment.length) {
+          val = s.gzhead.comment.charCodeAt(s.gzindex++) & 0xff;
+        } else {
+          val = 0;
+        }
+        put_byte(s, val);
+      } while (val !== 0);
+      //--- HCRC_UPDATE(beg) ---//
+      if (s.gzhead.hcrc && s.pending > beg) {
+        strm.adler = crc32_1$1(strm.adler, s.pending_buf, s.pending - beg, beg);
+      }
+      //---//
+    }
+    s.status = HCRC_STATE;
+  }
+  if (s.status === HCRC_STATE) {
+    if (s.gzhead.hcrc) {
+      if (s.pending + 2 > s.pending_buf_size) {
+        flush_pending(strm);
+        if (s.pending !== 0) {
+          s.last_flush = -1;
+          return Z_OK$3;
+        }
+      }
+      put_byte(s, strm.adler & 0xff);
+      put_byte(s, (strm.adler >> 8) & 0xff);
+      strm.adler = 0; //crc32(0L, Z_NULL, 0);
+    }
+    s.status = BUSY_STATE;
+
+    /* Compression must start with an empty pending buffer */
+    flush_pending(strm);
+    if (s.pending !== 0) {
+      s.last_flush = -1;
+      return Z_OK$3;
+    }
+  }
+//#endif
+
+  /* Start a new block or continue the current one.
+   */
+  if (strm.avail_in !== 0 || s.lookahead !== 0 ||
+    (flush !== Z_NO_FLUSH$2 && s.status !== FINISH_STATE)) {
+    let bstate = s.level === 0 ? deflate_stored(s, flush) :
+                 s.strategy === Z_HUFFMAN_ONLY ? deflate_huff(s, flush) :
+                 s.strategy === Z_RLE ? deflate_rle(s, flush) :
+                 configuration_table[s.level].func(s, flush);
+
+    if (bstate === BS_FINISH_STARTED || bstate === BS_FINISH_DONE) {
+      s.status = FINISH_STATE;
+    }
+    if (bstate === BS_NEED_MORE || bstate === BS_FINISH_STARTED) {
+      if (strm.avail_out === 0) {
+        s.last_flush = -1;
+        /* avoid BUF_ERROR next call, see above */
+      }
+      return Z_OK$3;
+      /* If flush != Z_NO_FLUSH && avail_out == 0, the next call
+       * of deflate should use the same flush parameter to make sure
+       * that the flush is complete. So we don't have to output an
+       * empty block here, this will be done at next call. This also
+       * ensures that for a very small output buffer, we emit at most
+       * one empty block.
+       */
+    }
+    if (bstate === BS_BLOCK_DONE) {
+      if (flush === Z_PARTIAL_FLUSH) {
+        _tr_align(s);
+      }
+      else if (flush !== Z_BLOCK$1) { /* FULL_FLUSH or SYNC_FLUSH */
+
+        _tr_stored_block(s, 0, 0, false);
+        /* For a full flush, this empty block will be recognized
+         * as a special marker by inflate_sync().
+         */
+        if (flush === Z_FULL_FLUSH$1) {
+          /*** CLEAR_HASH(s); ***/             /* forget history */
+          zero(s.head); // Fill with NIL (= 0);
+
+          if (s.lookahead === 0) {
+            s.strstart = 0;
+            s.block_start = 0;
+            s.insert = 0;
+          }
+        }
+      }
+      flush_pending(strm);
+      if (strm.avail_out === 0) {
+        s.last_flush = -1; /* avoid BUF_ERROR at next call, see above */
+        return Z_OK$3;
+      }
+    }
+  }
+
+  if (flush !== Z_FINISH$3) { return Z_OK$3; }
+  if (s.wrap <= 0) { return Z_STREAM_END$3; }
+
+  /* Write the trailer */
+  if (s.wrap === 2) {
+    put_byte(s, strm.adler & 0xff);
+    put_byte(s, (strm.adler >> 8) & 0xff);
+    put_byte(s, (strm.adler >> 16) & 0xff);
+    put_byte(s, (strm.adler >> 24) & 0xff);
+    put_byte(s, strm.total_in & 0xff);
+    put_byte(s, (strm.total_in >> 8) & 0xff);
+    put_byte(s, (strm.total_in >> 16) & 0xff);
+    put_byte(s, (strm.total_in >> 24) & 0xff);
+  }
+  else
+  {
+    putShortMSB(s, strm.adler >>> 16);
+    putShortMSB(s, strm.adler & 0xffff);
+  }
+
+  flush_pending(strm);
+  /* If avail_out is zero, the application will call deflate again
+   * to flush the rest.
+   */
+  if (s.wrap > 0) { s.wrap = -s.wrap; }
+  /* write the trailer only once! */
+  return s.pending !== 0 ? Z_OK$3 : Z_STREAM_END$3;
+};
+
+
+const deflateEnd = (strm) => {
+
+  if (deflateStateCheck(strm)) {
+    return Z_STREAM_ERROR$2;
+  }
+
+  const status = strm.state.status;
+
+  strm.state = null;
+
+  return status === BUSY_STATE ? err(strm, Z_DATA_ERROR$2) : Z_OK$3;
+};
+
+
+/* =========================================================================
+ * Initializes the compression dictionary from the given byte
+ * sequence without producing any compressed output.
+ */
+const deflateSetDictionary = (strm, dictionary) => {
+
+  let dictLength = dictionary.length;
+
+  if (deflateStateCheck(strm)) {
+    return Z_STREAM_ERROR$2;
+  }
+
+  const s = strm.state;
+  const wrap = s.wrap;
+
+  if (wrap === 2 || (wrap === 1 && s.status !== INIT_STATE) || s.lookahead) {
+    return Z_STREAM_ERROR$2;
+  }
+
+  /* when using zlib wrappers, compute Adler-32 for provided dictionary */
+  if (wrap === 1) {
+    /* adler32(strm->adler, dictionary, dictLength); */
+    strm.adler = adler32_1$1(strm.adler, dictionary, dictLength, 0);
+  }
+
+  s.wrap = 0;   /* avoid computing Adler-32 in read_buf */
+
+  /* if dictionary would fill window, just replace the history */
+  if (dictLength >= s.w_size) {
+    if (wrap === 0) {            /* already empty otherwise */
+      /*** CLEAR_HASH(s); ***/
+      zero(s.head); // Fill with NIL (= 0);
+      s.strstart = 0;
+      s.block_start = 0;
+      s.insert = 0;
+    }
+    /* use the tail */
+    // dictionary = dictionary.slice(dictLength - s.w_size);
+    let tmpDict = new Uint8Array(s.w_size);
+    tmpDict.set(dictionary.subarray(dictLength - s.w_size, dictLength), 0);
+    dictionary = tmpDict;
+    dictLength = s.w_size;
+  }
+  /* insert dictionary into window and hash */
+  const avail = strm.avail_in;
+  const next = strm.next_in;
+  const input = strm.input;
+  strm.avail_in = dictLength;
+  strm.next_in = 0;
+  strm.input = dictionary;
+  fill_window(s);
+  while (s.lookahead >= MIN_MATCH) {
+    let str = s.strstart;
+    let n = s.lookahead - (MIN_MATCH - 1);
+    do {
+      /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */
+      s.ins_h = HASH(s, s.ins_h, s.window[str + MIN_MATCH - 1]);
+
+      s.prev[str & s.w_mask] = s.head[s.ins_h];
+
+      s.head[s.ins_h] = str;
+      str++;
+    } while (--n);
+    s.strstart = str;
+    s.lookahead = MIN_MATCH - 1;
+    fill_window(s);
+  }
+  s.strstart += s.lookahead;
+  s.block_start = s.strstart;
+  s.insert = s.lookahead;
+  s.lookahead = 0;
+  s.match_length = s.prev_length = MIN_MATCH - 1;
+  s.match_available = 0;
+  strm.next_in = next;
+  strm.input = input;
+  strm.avail_in = avail;
+  s.wrap = wrap;
+  return Z_OK$3;
+};
+
+
+var deflateInit_1 = deflateInit;
+var deflateInit2_1 = deflateInit2;
+var deflateReset_1 = deflateReset;
+var deflateResetKeep_1 = deflateResetKeep;
+var deflateSetHeader_1 = deflateSetHeader;
+var deflate_2$1 = deflate$2;
+var deflateEnd_1 = deflateEnd;
+var deflateSetDictionary_1 = deflateSetDictionary;
+var deflateInfo = 'pako deflate (from Nodeca project)';
+
+/* Not implemented
+module.exports.deflateBound = deflateBound;
+module.exports.deflateCopy = deflateCopy;
+module.exports.deflateGetDictionary = deflateGetDictionary;
+module.exports.deflateParams = deflateParams;
+module.exports.deflatePending = deflatePending;
+module.exports.deflatePrime = deflatePrime;
+module.exports.deflateTune = deflateTune;
+*/
+
+var deflate_1$2 = {
+	deflateInit: deflateInit_1,
+	deflateInit2: deflateInit2_1,
+	deflateReset: deflateReset_1,
+	deflateResetKeep: deflateResetKeep_1,
+	deflateSetHeader: deflateSetHeader_1,
+	deflate: deflate_2$1,
+	deflateEnd: deflateEnd_1,
+	deflateSetDictionary: deflateSetDictionary_1,
+	deflateInfo: deflateInfo
+};
+
+const _has$1 = (obj, key) => {
+  return Object.prototype.hasOwnProperty.call(obj, key);
+};
+
+var assign$1 = function (obj /*from1, from2, from3, ...*/) {
+  const sources = Array.prototype.slice.call(arguments, 1);
+  while (sources.length) {
+    const source = sources.shift();
+    if (!source) { continue; }
+
+    if (typeof source !== 'object') {
+      throw new TypeError(source + 'must be non-object');
+    }
+
+    for (const p in source) {
+      if (_has$1(source, p)) {
+        obj[p] = source[p];
+      }
+    }
+  }
+
+  return obj;
+};
+
+
+// Join array of chunks to single array.
+var flattenChunks$1 = (chunks) => {
+  // calculate data length
+  let len = 0;
+
+  for (let i = 0, l = chunks.length; i < l; i++) {
+    len += chunks[i].length;
+  }
+
+  // join chunks
+  const result = new Uint8Array(len);
+
+  for (let i = 0, pos = 0, l = chunks.length; i < l; i++) {
+    let chunk = chunks[i];
+    result.set(chunk, pos);
+    pos += chunk.length;
+  }
+
+  return result;
+};
+
+var common$1 = {
+	assign: assign$1,
+	flattenChunks: flattenChunks$1
+};
+
+// String encode/decode helpers
+
+
+// Quick check if we can use fast array to bin string conversion
+//
+// - apply(Array) can fail on Android 2.2
+// - apply(Uint8Array) can fail on iOS 5.1 Safari
+//
+let STR_APPLY_UIA_OK$1 = true;
+
+try { String.fromCharCode.apply(null, new Uint8Array(1)); } catch (__) { STR_APPLY_UIA_OK$1 = false; }
+
+
+// Table with utf8 lengths (calculated by first byte of sequence)
+// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS,
+// because max possible codepoint is 0x10ffff
+const _utf8len$1 = new Uint8Array(256);
+for (let q = 0; q < 256; q++) {
+  _utf8len$1[q] = (q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1);
+}
+_utf8len$1[254] = _utf8len$1[254] = 1; // Invalid sequence start
+
+
+// convert string to array (typed, when possible)
+var string2buf$1 = (str) => {
+  if (typeof TextEncoder === 'function' && TextEncoder.prototype.encode) {
+    return new TextEncoder().encode(str);
+  }
+
+  let buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;
+
+  // count binary size
+  for (m_pos = 0; m_pos < str_len; m_pos++) {
+    c = str.charCodeAt(m_pos);
+    if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) {
+      c2 = str.charCodeAt(m_pos + 1);
+      if ((c2 & 0xfc00) === 0xdc00) {
+        c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
+        m_pos++;
+      }
+    }
+    buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4;
+  }
+
+  // allocate buffer
+  buf = new Uint8Array(buf_len);
+
+  // convert
+  for (i = 0, m_pos = 0; i < buf_len; m_pos++) {
+    c = str.charCodeAt(m_pos);
+    if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) {
+      c2 = str.charCodeAt(m_pos + 1);
+      if ((c2 & 0xfc00) === 0xdc00) {
+        c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
+        m_pos++;
+      }
+    }
+    if (c < 0x80) {
+      /* one byte */
+      buf[i++] = c;
+    } else if (c < 0x800) {
+      /* two bytes */
+      buf[i++] = 0xC0 | (c >>> 6);
+      buf[i++] = 0x80 | (c & 0x3f);
+    } else if (c < 0x10000) {
+      /* three bytes */
+      buf[i++] = 0xE0 | (c >>> 12);
+      buf[i++] = 0x80 | (c >>> 6 & 0x3f);
+      buf[i++] = 0x80 | (c & 0x3f);
+    } else {
+      /* four bytes */
+      buf[i++] = 0xf0 | (c >>> 18);
+      buf[i++] = 0x80 | (c >>> 12 & 0x3f);
+      buf[i++] = 0x80 | (c >>> 6 & 0x3f);
+      buf[i++] = 0x80 | (c & 0x3f);
+    }
+  }
+
+  return buf;
+};
+
+// Helper
+const buf2binstring$1 = (buf, len) => {
+  // On Chrome, the arguments in a function call that are allowed is `65534`.
+  // If the length of the buffer is smaller than that, we can use this optimization,
+  // otherwise we will take a slower path.
+  if (len < 65534) {
+    if (buf.subarray && STR_APPLY_UIA_OK$1) {
+      return String.fromCharCode.apply(null, buf.length === len ? buf : buf.subarray(0, len));
+    }
+  }
+
+  let result = '';
+  for (let i = 0; i < len; i++) {
+    result += String.fromCharCode(buf[i]);
+  }
+  return result;
+};
+
+
+// convert array to string
+var buf2string$1 = (buf, max) => {
+  const len = max || buf.length;
+
+  if (typeof TextDecoder === 'function' && TextDecoder.prototype.decode) {
+    return new TextDecoder().decode(buf.subarray(0, max));
+  }
+
+  let i, out;
+
+  // Reserve max possible length (2 words per char)
+  // NB: by unknown reasons, Array is significantly faster for
+  //     String.fromCharCode.apply than Uint16Array.
+  const utf16buf = new Array(len * 2);
+
+  for (out = 0, i = 0; i < len;) {
+    let c = buf[i++];
+    // quick process ascii
+    if (c < 0x80) { utf16buf[out++] = c; continue; }
+
+    let c_len = _utf8len$1[c];
+    // skip 5 & 6 byte codes
+    if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len - 1; continue; }
+
+    // apply mask on first byte
+    c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07;
+    // join the rest
+    while (c_len > 1 && i < len) {
+      c = (c << 6) | (buf[i++] & 0x3f);
+      c_len--;
+    }
+
+    // terminated by end of string?
+    if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; }
+
+    if (c < 0x10000) {
+      utf16buf[out++] = c;
+    } else {
+      c -= 0x10000;
+      utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff);
+      utf16buf[out++] = 0xdc00 | (c & 0x3ff);
+    }
+  }
+
+  return buf2binstring$1(utf16buf, out);
+};
+
+
+// Calculate max possible position in utf8 buffer,
+// that will not break sequence. If that's not possible
+// - (very small limits) return max size as is.
+//
+// buf[] - utf8 bytes array
+// max   - length limit (mandatory);
+var utf8border$1 = (buf, max) => {
+
+  max = max || buf.length;
+  if (max > buf.length) { max = buf.length; }
+
+  // go back from last position, until start of sequence found
+  let pos = max - 1;
+  while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; }
+
+  // Very small and broken sequence,
+  // return max, because we should return something anyway.
+  if (pos < 0) { return max; }
+
+  // If we came to start of buffer - that means buffer is too small,
+  // return max too.
+  if (pos === 0) { return max; }
+
+  return (pos + _utf8len$1[buf[pos]] > max) ? pos : max;
+};
+
+var strings$1 = {
+	string2buf: string2buf$1,
+	buf2string: buf2string$1,
+	utf8border: utf8border$1
+};
+
+// (C) 1995-2013 Jean-loup Gailly and Mark Adler
+// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//   claim that you wrote the original software. If you use this software
+//   in a product, an acknowledgment in the product documentation would be
+//   appreciated but is not required.
+// 2. Altered source versions must be plainly marked as such, and must not be
+//   misrepresented as being the original software.
+// 3. This notice may not be removed or altered from any source distribution.
+
+function ZStream$1() {
+  /* next input byte */
+  this.input = null; // JS specific, because we have no pointers
+  this.next_in = 0;
+  /* number of bytes available at input */
+  this.avail_in = 0;
+  /* total number of input bytes read so far */
+  this.total_in = 0;
+  /* next output byte should be put there */
+  this.output = null; // JS specific, because we have no pointers
+  this.next_out = 0;
+  /* remaining free space at output */
+  this.avail_out = 0;
+  /* total number of bytes output so far */
+  this.total_out = 0;
+  /* last error message, NULL if no error */
+  this.msg = ''/*Z_NULL*/;
+  /* not visible by applications */
+  this.state = null;
+  /* best guess about the data type: binary or text */
+  this.data_type = 2/*Z_UNKNOWN*/;
+  /* adler32 value of the uncompressed data */
+  this.adler = 0;
+}
+
+var zstream$1 = ZStream$1;
+
+const toString$1 = Object.prototype.toString;
+
+/* Public constants ==========================================================*/
+/* ===========================================================================*/
+
+const {
+  Z_NO_FLUSH: Z_NO_FLUSH$1, Z_SYNC_FLUSH, Z_FULL_FLUSH, Z_FINISH: Z_FINISH$2,
+  Z_OK: Z_OK$2, Z_STREAM_END: Z_STREAM_END$2,
+  Z_DEFAULT_COMPRESSION,
+  Z_DEFAULT_STRATEGY,
+  Z_DEFLATED: Z_DEFLATED$1
+} = constants$2$1;
+
+/* ===========================================================================*/
+
+
+/**
+ * class Deflate
+ *
+ * Generic JS-style wrapper for zlib calls. If you don't need
+ * streaming behaviour - use more simple functions: [[deflate]],
+ * [[deflateRaw]] and [[gzip]].
+ **/
+
+/* internal
+ * Deflate.chunks -> Array
+ *
+ * Chunks of output data, if [[Deflate#onData]] not overridden.
+ **/
+
+/**
+ * Deflate.result -> Uint8Array
+ *
+ * Compressed result, generated by default [[Deflate#onData]]
+ * and [[Deflate#onEnd]] handlers. Filled after you push last chunk
+ * (call [[Deflate#push]] with `Z_FINISH` / `true` param).
+ **/
+
+/**
+ * Deflate.err -> Number
+ *
+ * Error code after deflate finished. 0 (Z_OK) on success.
+ * You will not need it in real life, because deflate errors
+ * are possible only on wrong options or bad `onData` / `onEnd`
+ * custom handlers.
+ **/
+
+/**
+ * Deflate.msg -> String
+ *
+ * Error message, if [[Deflate.err]] != 0
+ **/
+
+
+/**
+ * new Deflate(options)
+ * - options (Object): zlib deflate options.
+ *
+ * Creates new deflator instance with specified params. Throws exception
+ * on bad params. Supported options:
+ *
+ * - `level`
+ * - `windowBits`
+ * - `memLevel`
+ * - `strategy`
+ * - `dictionary`
+ *
+ * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
+ * for more information on these.
+ *
+ * Additional options, for internal needs:
+ *
+ * - `chunkSize` - size of generated data chunks (16K by default)
+ * - `raw` (Boolean) - do raw deflate
+ * - `gzip` (Boolean) - create gzip wrapper
+ * - `header` (Object) - custom header for gzip
+ *   - `text` (Boolean) - true if compressed data believed to be text
+ *   - `time` (Number) - modification time, unix timestamp
+ *   - `os` (Number) - operation system code
+ *   - `extra` (Array) - array of bytes with extra data (max 65536)
+ *   - `name` (String) - file name (binary string)
+ *   - `comment` (String) - comment (binary string)
+ *   - `hcrc` (Boolean) - true if header crc should be added
+ *
+ * ##### Example:
+ *
+ * ```javascript
+ * const pako = require('pako')
+ *   , chunk1 = new Uint8Array([1,2,3,4,5,6,7,8,9])
+ *   , chunk2 = new Uint8Array([10,11,12,13,14,15,16,17,18,19]);
+ *
+ * const deflate = new pako.Deflate({ level: 3});
+ *
+ * deflate.push(chunk1, false);
+ * deflate.push(chunk2, true);  // true -> last chunk
+ *
+ * if (deflate.err) { throw new Error(deflate.err); }
+ *
+ * console.log(deflate.result);
+ * ```
+ **/
+function Deflate$1(options) {
+  this.options = common$1.assign({
+    level: Z_DEFAULT_COMPRESSION,
+    method: Z_DEFLATED$1,
+    chunkSize: 16384,
+    windowBits: 15,
+    memLevel: 8,
+    strategy: Z_DEFAULT_STRATEGY
+  }, options || {});
+
+  let opt = this.options;
+
+  if (opt.raw && (opt.windowBits > 0)) {
+    opt.windowBits = -opt.windowBits;
+  }
+
+  else if (opt.gzip && (opt.windowBits > 0) && (opt.windowBits < 16)) {
+    opt.windowBits += 16;
+  }
+
+  this.err    = 0;      // error code, if happens (0 = Z_OK)
+  this.msg    = '';     // error message
+  this.ended  = false;  // used to avoid multiple onEnd() calls
+  this.chunks = [];     // chunks of compressed data
+
+  this.strm = new zstream$1();
+  this.strm.avail_out = 0;
+
+  let status = deflate_1$2.deflateInit2(
+    this.strm,
+    opt.level,
+    opt.method,
+    opt.windowBits,
+    opt.memLevel,
+    opt.strategy
+  );
+
+  if (status !== Z_OK$2) {
+    throw new Error(messages$1[status]);
+  }
+
+  if (opt.header) {
+    deflate_1$2.deflateSetHeader(this.strm, opt.header);
+  }
+
+  if (opt.dictionary) {
+    let dict;
+    // Convert data if needed
+    if (typeof opt.dictionary === 'string') {
+      // If we need to compress text, change encoding to utf8.
+      dict = strings$1.string2buf(opt.dictionary);
+    } else if (toString$1.call(opt.dictionary) === '[object ArrayBuffer]') {
+      dict = new Uint8Array(opt.dictionary);
+    } else {
+      dict = opt.dictionary;
+    }
+
+    status = deflate_1$2.deflateSetDictionary(this.strm, dict);
+
+    if (status !== Z_OK$2) {
+      throw new Error(messages$1[status]);
+    }
+
+    this._dict_set = true;
+  }
+}
+
+/**
+ * Deflate#push(data[, flush_mode]) -> Boolean
+ * - data (Uint8Array|ArrayBuffer|String): input data. Strings will be
+ *   converted to utf8 byte sequence.
+ * - flush_mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.
+ *   See constants. Skipped or `false` means Z_NO_FLUSH, `true` means Z_FINISH.
+ *
+ * Sends input data to deflate pipe, generating [[Deflate#onData]] calls with
+ * new compressed chunks. Returns `true` on success. The last data block must
+ * have `flush_mode` Z_FINISH (or `true`). That will flush internal pending
+ * buffers and call [[Deflate#onEnd]].
+ *
+ * On fail call [[Deflate#onEnd]] with error code and return false.
+ *
+ * ##### Example
+ *
+ * ```javascript
+ * push(chunk, false); // push one of data chunks
+ * ...
+ * push(chunk, true);  // push last chunk
+ * ```
+ **/
+Deflate$1.prototype.push = function (data, flush_mode) {
+  const strm = this.strm;
+  const chunkSize = this.options.chunkSize;
+  let status, _flush_mode;
+
+  if (this.ended) { return false; }
+
+  if (flush_mode === ~~flush_mode) _flush_mode = flush_mode;
+  else _flush_mode = flush_mode === true ? Z_FINISH$2 : Z_NO_FLUSH$1;
+
+  // Convert data if needed
+  if (typeof data === 'string') {
+    // If we need to compress text, change encoding to utf8.
+    strm.input = strings$1.string2buf(data);
+  } else if (toString$1.call(data) === '[object ArrayBuffer]') {
+    strm.input = new Uint8Array(data);
+  } else {
+    strm.input = data;
+  }
+
+  strm.next_in = 0;
+  strm.avail_in = strm.input.length;
+
+  for (;;) {
+    if (strm.avail_out === 0) {
+      strm.output = new Uint8Array(chunkSize);
+      strm.next_out = 0;
+      strm.avail_out = chunkSize;
+    }
+
+    // Make sure avail_out > 6 to avoid repeating markers
+    if ((_flush_mode === Z_SYNC_FLUSH || _flush_mode === Z_FULL_FLUSH) && strm.avail_out <= 6) {
+      this.onData(strm.output.subarray(0, strm.next_out));
+      strm.avail_out = 0;
+      continue;
+    }
+
+    status = deflate_1$2.deflate(strm, _flush_mode);
+
+    // Ended => flush and finish
+    if (status === Z_STREAM_END$2) {
+      if (strm.next_out > 0) {
+        this.onData(strm.output.subarray(0, strm.next_out));
+      }
+      status = deflate_1$2.deflateEnd(this.strm);
+      this.onEnd(status);
+      this.ended = true;
+      return status === Z_OK$2;
+    }
+
+    // Flush if out buffer full
+    if (strm.avail_out === 0) {
+      this.onData(strm.output);
+      continue;
+    }
+
+    // Flush if requested and has data
+    if (_flush_mode > 0 && strm.next_out > 0) {
+      this.onData(strm.output.subarray(0, strm.next_out));
+      strm.avail_out = 0;
+      continue;
+    }
+
+    if (strm.avail_in === 0) break;
+  }
+
+  return true;
+};
+
+
+/**
+ * Deflate#onData(chunk) -> Void
+ * - chunk (Uint8Array): output data.
+ *
+ * By default, stores data blocks in `chunks[]` property and glue
+ * those in `onEnd`. Override this handler, if you need another behaviour.
+ **/
+Deflate$1.prototype.onData = function (chunk) {
+  this.chunks.push(chunk);
+};
+
+
+/**
+ * Deflate#onEnd(status) -> Void
+ * - status (Number): deflate status. 0 (Z_OK) on success,
+ *   other if not.
+ *
+ * Called once after you tell deflate that the input stream is
+ * complete (Z_FINISH). By default - join collected chunks,
+ * free memory and fill `results` / `err` properties.
+ **/
+Deflate$1.prototype.onEnd = function (status) {
+  // On success - join
+  if (status === Z_OK$2) {
+    this.result = common$1.flattenChunks(this.chunks);
+  }
+  this.chunks = [];
+  this.err = status;
+  this.msg = this.strm.msg;
+};
+
+
+/**
+ * deflate(data[, options]) -> Uint8Array
+ * - data (Uint8Array|ArrayBuffer|String): input data to compress.
+ * - options (Object): zlib deflate options.
+ *
+ * Compress `data` with deflate algorithm and `options`.
+ *
+ * Supported options are:
+ *
+ * - level
+ * - windowBits
+ * - memLevel
+ * - strategy
+ * - dictionary
+ *
+ * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
+ * for more information on these.
+ *
+ * Sugar (options):
+ *
+ * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify
+ *   negative windowBits implicitly.
+ *
+ * ##### Example:
+ *
+ * ```javascript
+ * const pako = require('pako')
+ * const data = new Uint8Array([1,2,3,4,5,6,7,8,9]);
+ *
+ * console.log(pako.deflate(data));
+ * ```
+ **/
+function deflate$1(input, options) {
+  const deflator = new Deflate$1(options);
+
+  deflator.push(input, true);
+
+  // That will never happens, if you don't cheat with options :)
+  if (deflator.err) { throw deflator.msg || messages$1[deflator.err]; }
+
+  return deflator.result;
+}
+
+
+/**
+ * deflateRaw(data[, options]) -> Uint8Array
+ * - data (Uint8Array|ArrayBuffer|String): input data to compress.
+ * - options (Object): zlib deflate options.
+ *
+ * The same as [[deflate]], but creates raw data, without wrapper
+ * (header and adler32 crc).
+ **/
+function deflateRaw$1(input, options) {
+  options = options || {};
+  options.raw = true;
+  return deflate$1(input, options);
+}
+
+
+/**
+ * gzip(data[, options]) -> Uint8Array
+ * - data (Uint8Array|ArrayBuffer|String): input data to compress.
+ * - options (Object): zlib deflate options.
+ *
+ * The same as [[deflate]], but create gzip wrapper instead of
+ * deflate one.
+ **/
+function gzip$1(input, options) {
+  options = options || {};
+  options.gzip = true;
+  return deflate$1(input, options);
+}
+
+
+var Deflate_1$1 = Deflate$1;
+var deflate_2 = deflate$1;
+var deflateRaw_1$1 = deflateRaw$1;
+var gzip_1$1 = gzip$1;
+var constants$1 = constants$2$1;
+
+var deflate_1$1 = {
+	Deflate: Deflate_1$1,
+	deflate: deflate_2,
+	deflateRaw: deflateRaw_1$1,
+	gzip: gzip_1$1,
+	constants: constants$1
+};
+
+// (C) 1995-2013 Jean-loup Gailly and Mark Adler
+// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//   claim that you wrote the original software. If you use this software
+//   in a product, an acknowledgment in the product documentation would be
+//   appreciated but is not required.
+// 2. Altered source versions must be plainly marked as such, and must not be
+//   misrepresented as being the original software.
+// 3. This notice may not be removed or altered from any source distribution.
+
+// See state defs from inflate.js
+const BAD$1$1 = 16209;       /* got a data error -- remain here until reset */
+const TYPE$1$1 = 16191;      /* i: waiting for type bits, including last-flag bit */
+
+/*
+   Decode literal, length, and distance codes and write out the resulting
+   literal and match bytes until either not enough input or output is
+   available, an end-of-block is encountered, or a data error is encountered.
+   When large enough input and output buffers are supplied to inflate(), for
+   example, a 16K input buffer and a 64K output buffer, more than 95% of the
+   inflate execution time is spent in this routine.
+
+   Entry assumptions:
+
+        state.mode === LEN
+        strm.avail_in >= 6
+        strm.avail_out >= 258
+        start >= strm.avail_out
+        state.bits < 8
+
+   On return, state.mode is one of:
+
+        LEN -- ran out of enough output space or enough available input
+        TYPE -- reached end of block code, inflate() to interpret next block
+        BAD -- error in block data
+
+   Notes:
+
+    - The maximum input bits used by a length/distance pair is 15 bits for the
+      length code, 5 bits for the length extra, 15 bits for the distance code,
+      and 13 bits for the distance extra.  This totals 48 bits, or six bytes.
+      Therefore if strm.avail_in >= 6, then there is enough input to avoid
+      checking for available input while decoding.
+
+    - The maximum bytes that a single length/distance pair can output is 258
+      bytes, which is the maximum length that can be coded.  inflate_fast()
+      requires strm.avail_out >= 258 for each loop to avoid checking for
+      output space.
+ */
+var inffast$1 = function inflate_fast(strm, start) {
+  let _in;                    /* local strm.input */
+  let last;                   /* have enough input while in < last */
+  let _out;                   /* local strm.output */
+  let beg;                    /* inflate()'s initial strm.output */
+  let end;                    /* while out < end, enough space available */
+//#ifdef INFLATE_STRICT
+  let dmax;                   /* maximum distance from zlib header */
+//#endif
+  let wsize;                  /* window size or zero if not using window */
+  let whave;                  /* valid bytes in the window */
+  let wnext;                  /* window write index */
+  // Use `s_window` instead `window`, avoid conflict with instrumentation tools
+  let s_window;               /* allocated sliding window, if wsize != 0 */
+  let hold;                   /* local strm.hold */
+  let bits;                   /* local strm.bits */
+  let lcode;                  /* local strm.lencode */
+  let dcode;                  /* local strm.distcode */
+  let lmask;                  /* mask for first level of length codes */
+  let dmask;                  /* mask for first level of distance codes */
+  let here;                   /* retrieved table entry */
+  let op;                     /* code bits, operation, extra bits, or */
+                              /*  window position, window bytes to copy */
+  let len;                    /* match length, unused bytes */
+  let dist;                   /* match distance */
+  let from;                   /* where to copy match from */
+  let from_source;
+
+
+  let input, output; // JS specific, because we have no pointers
+
+  /* copy state to local variables */
+  const state = strm.state;
+  //here = state.here;
+  _in = strm.next_in;
+  input = strm.input;
+  last = _in + (strm.avail_in - 5);
+  _out = strm.next_out;
+  output = strm.output;
+  beg = _out - (start - strm.avail_out);
+  end = _out + (strm.avail_out - 257);
+//#ifdef INFLATE_STRICT
+  dmax = state.dmax;
+//#endif
+  wsize = state.wsize;
+  whave = state.whave;
+  wnext = state.wnext;
+  s_window = state.window;
+  hold = state.hold;
+  bits = state.bits;
+  lcode = state.lencode;
+  dcode = state.distcode;
+  lmask = (1 << state.lenbits) - 1;
+  dmask = (1 << state.distbits) - 1;
+
+
+  /* decode literals and length/distances until end-of-block or not enough
+     input data or output space */
+
+  top:
+  do {
+    if (bits < 15) {
+      hold += input[_in++] << bits;
+      bits += 8;
+      hold += input[_in++] << bits;
+      bits += 8;
+    }
+
+    here = lcode[hold & lmask];
+
+    dolen:
+    for (;;) { // Goto emulation
+      op = here >>> 24/*here.bits*/;
+      hold >>>= op;
+      bits -= op;
+      op = (here >>> 16) & 0xff/*here.op*/;
+      if (op === 0) {                          /* literal */
+        //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
+        //        "inflate:         literal '%c'\n" :
+        //        "inflate:         literal 0x%02x\n", here.val));
+        output[_out++] = here & 0xffff/*here.val*/;
+      }
+      else if (op & 16) {                     /* length base */
+        len = here & 0xffff/*here.val*/;
+        op &= 15;                           /* number of extra bits */
+        if (op) {
+          if (bits < op) {
+            hold += input[_in++] << bits;
+            bits += 8;
+          }
+          len += hold & ((1 << op) - 1);
+          hold >>>= op;
+          bits -= op;
+        }
+        //Tracevv((stderr, "inflate:         length %u\n", len));
+        if (bits < 15) {
+          hold += input[_in++] << bits;
+          bits += 8;
+          hold += input[_in++] << bits;
+          bits += 8;
+        }
+        here = dcode[hold & dmask];
+
+        dodist:
+        for (;;) { // goto emulation
+          op = here >>> 24/*here.bits*/;
+          hold >>>= op;
+          bits -= op;
+          op = (here >>> 16) & 0xff/*here.op*/;
+
+          if (op & 16) {                      /* distance base */
+            dist = here & 0xffff/*here.val*/;
+            op &= 15;                       /* number of extra bits */
+            if (bits < op) {
+              hold += input[_in++] << bits;
+              bits += 8;
+              if (bits < op) {
+                hold += input[_in++] << bits;
+                bits += 8;
+              }
+            }
+            dist += hold & ((1 << op) - 1);
+//#ifdef INFLATE_STRICT
+            if (dist > dmax) {
+              strm.msg = 'invalid distance too far back';
+              state.mode = BAD$1$1;
+              break top;
+            }
+//#endif
+            hold >>>= op;
+            bits -= op;
+            //Tracevv((stderr, "inflate:         distance %u\n", dist));
+            op = _out - beg;                /* max distance in output */
+            if (dist > op) {                /* see if copy from window */
+              op = dist - op;               /* distance back in window */
+              if (op > whave) {
+                if (state.sane) {
+                  strm.msg = 'invalid distance too far back';
+                  state.mode = BAD$1$1;
+                  break top;
+                }
+
+// (!) This block is disabled in zlib defaults,
+// don't enable it for binary compatibility
+//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
+//                if (len <= op - whave) {
+//                  do {
+//                    output[_out++] = 0;
+//                  } while (--len);
+//                  continue top;
+//                }
+//                len -= op - whave;
+//                do {
+//                  output[_out++] = 0;
+//                } while (--op > whave);
+//                if (op === 0) {
+//                  from = _out - dist;
+//                  do {
+//                    output[_out++] = output[from++];
+//                  } while (--len);
+//                  continue top;
+//                }
+//#endif
+              }
+              from = 0; // window index
+              from_source = s_window;
+              if (wnext === 0) {           /* very common case */
+                from += wsize - op;
+                if (op < len) {         /* some from window */
+                  len -= op;
+                  do {
+                    output[_out++] = s_window[from++];
+                  } while (--op);
+                  from = _out - dist;  /* rest from output */
+                  from_source = output;
+                }
+              }
+              else if (wnext < op) {      /* wrap around window */
+                from += wsize + wnext - op;
+                op -= wnext;
+                if (op < len) {         /* some from end of window */
+                  len -= op;
+                  do {
+                    output[_out++] = s_window[from++];
+                  } while (--op);
+                  from = 0;
+                  if (wnext < len) {  /* some from start of window */
+                    op = wnext;
+                    len -= op;
+                    do {
+                      output[_out++] = s_window[from++];
+                    } while (--op);
+                    from = _out - dist;      /* rest from output */
+                    from_source = output;
+                  }
+                }
+              }
+              else {                      /* contiguous in window */
+                from += wnext - op;
+                if (op < len) {         /* some from window */
+                  len -= op;
+                  do {
+                    output[_out++] = s_window[from++];
+                  } while (--op);
+                  from = _out - dist;  /* rest from output */
+                  from_source = output;
+                }
+              }
+              while (len > 2) {
+                output[_out++] = from_source[from++];
+                output[_out++] = from_source[from++];
+                output[_out++] = from_source[from++];
+                len -= 3;
+              }
+              if (len) {
+                output[_out++] = from_source[from++];
+                if (len > 1) {
+                  output[_out++] = from_source[from++];
+                }
+              }
+            }
+            else {
+              from = _out - dist;          /* copy direct from output */
+              do {                        /* minimum length is three */
+                output[_out++] = output[from++];
+                output[_out++] = output[from++];
+                output[_out++] = output[from++];
+                len -= 3;
+              } while (len > 2);
+              if (len) {
+                output[_out++] = output[from++];
+                if (len > 1) {
+                  output[_out++] = output[from++];
+                }
+              }
+            }
+          }
+          else if ((op & 64) === 0) {          /* 2nd level distance code */
+            here = dcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
+            continue dodist;
+          }
+          else {
+            strm.msg = 'invalid distance code';
+            state.mode = BAD$1$1;
+            break top;
+          }
+
+          break; // need to emulate goto via "continue"
+        }
+      }
+      else if ((op & 64) === 0) {              /* 2nd level length code */
+        here = lcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
+        continue dolen;
+      }
+      else if (op & 32) {                     /* end-of-block */
+        //Tracevv((stderr, "inflate:         end of block\n"));
+        state.mode = TYPE$1$1;
+        break top;
+      }
+      else {
+        strm.msg = 'invalid literal/length code';
+        state.mode = BAD$1$1;
+        break top;
+      }
+
+      break; // need to emulate goto via "continue"
+    }
+  } while (_in < last && _out < end);
+
+  /* return unused bytes (on entry, bits < 8, so in won't go too far back) */
+  len = bits >> 3;
+  _in -= len;
+  bits -= len << 3;
+  hold &= (1 << bits) - 1;
+
+  /* update state and return */
+  strm.next_in = _in;
+  strm.next_out = _out;
+  strm.avail_in = (_in < last ? 5 + (last - _in) : 5 - (_in - last));
+  strm.avail_out = (_out < end ? 257 + (end - _out) : 257 - (_out - end));
+  state.hold = hold;
+  state.bits = bits;
+  return;
+};
+
+// (C) 1995-2013 Jean-loup Gailly and Mark Adler
+// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//   claim that you wrote the original software. If you use this software
+//   in a product, an acknowledgment in the product documentation would be
+//   appreciated but is not required.
+// 2. Altered source versions must be plainly marked as such, and must not be
+//   misrepresented as being the original software.
+// 3. This notice may not be removed or altered from any source distribution.
+
+const MAXBITS$1 = 15;
+const ENOUGH_LENS$1$1 = 852;
+const ENOUGH_DISTS$1$1 = 592;
+//const ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS);
+
+const CODES$1$1 = 0;
+const LENS$1$1 = 1;
+const DISTS$1$1 = 2;
+
+const lbase$1 = new Uint16Array([ /* Length codes 257..285 base */
+  3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
+  35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0
+]);
+
+const lext$1 = new Uint8Array([ /* Length codes 257..285 extra */
+  16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
+  19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78
+]);
+
+const dbase$1 = new Uint16Array([ /* Distance codes 0..29 base */
+  1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
+  257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
+  8193, 12289, 16385, 24577, 0, 0
+]);
+
+const dext$1 = new Uint8Array([ /* Distance codes 0..29 extra */
+  16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
+  23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
+  28, 28, 29, 29, 64, 64
+]);
+
+const inflate_table$1 = (type, lens, lens_index, codes, table, table_index, work, opts) =>
+{
+  const bits = opts.bits;
+      //here = opts.here; /* table entry for duplication */
+
+  let len = 0;               /* a code's length in bits */
+  let sym = 0;               /* index of code symbols */
+  let min = 0, max = 0;          /* minimum and maximum code lengths */
+  let root = 0;              /* number of index bits for root table */
+  let curr = 0;              /* number of index bits for current table */
+  let drop = 0;              /* code bits to drop for sub-table */
+  let left = 0;                   /* number of prefix codes available */
+  let used = 0;              /* code entries in table used */
+  let huff = 0;              /* Huffman code */
+  let incr;              /* for incrementing code, index */
+  let fill;              /* index for replicating entries */
+  let low;               /* low bits for current root entry */
+  let mask;              /* mask for low root bits */
+  let next;             /* next available space in table */
+  let base = null;     /* base value table to use */
+//  let shoextra;    /* extra bits table to use */
+  let match;                  /* use base and extra for symbol >= match */
+  const count = new Uint16Array(MAXBITS$1 + 1); //[MAXBITS+1];    /* number of codes of each length */
+  const offs = new Uint16Array(MAXBITS$1 + 1); //[MAXBITS+1];     /* offsets in table for each length */
+  let extra = null;
+
+  let here_bits, here_op, here_val;
+
+  /*
+   Process a set of code lengths to create a canonical Huffman code.  The
+   code lengths are lens[0..codes-1].  Each length corresponds to the
+   symbols 0..codes-1.  The Huffman code is generated by first sorting the
+   symbols by length from short to long, and retaining the symbol order
+   for codes with equal lengths.  Then the code starts with all zero bits
+   for the first code of the shortest length, and the codes are integer
+   increments for the same length, and zeros are appended as the length
+   increases.  For the deflate format, these bits are stored backwards
+   from their more natural integer increment ordering, and so when the
+   decoding tables are built in the large loop below, the integer codes
+   are incremented backwards.
+
+   This routine assumes, but does not check, that all of the entries in
+   lens[] are in the range 0..MAXBITS.  The caller must assure this.
+   1..MAXBITS is interpreted as that code length.  zero means that that
+   symbol does not occur in this code.
+
+   The codes are sorted by computing a count of codes for each length,
+   creating from that a table of starting indices for each length in the
+   sorted table, and then entering the symbols in order in the sorted
+   table.  The sorted table is work[], with that space being provided by
+   the caller.
+
+   The length counts are used for other purposes as well, i.e. finding
+   the minimum and maximum length codes, determining if there are any
+   codes at all, checking for a valid set of lengths, and looking ahead
+   at length counts to determine sub-table sizes when building the
+   decoding tables.
+   */
+
+  /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
+  for (len = 0; len <= MAXBITS$1; len++) {
+    count[len] = 0;
+  }
+  for (sym = 0; sym < codes; sym++) {
+    count[lens[lens_index + sym]]++;
+  }
+
+  /* bound code lengths, force root to be within code lengths */
+  root = bits;
+  for (max = MAXBITS$1; max >= 1; max--) {
+    if (count[max] !== 0) { break; }
+  }
+  if (root > max) {
+    root = max;
+  }
+  if (max === 0) {                     /* no symbols to code at all */
+    //table.op[opts.table_index] = 64;  //here.op = (var char)64;    /* invalid code marker */
+    //table.bits[opts.table_index] = 1;   //here.bits = (var char)1;
+    //table.val[opts.table_index++] = 0;   //here.val = (var short)0;
+    table[table_index++] = (1 << 24) | (64 << 16) | 0;
+
+
+    //table.op[opts.table_index] = 64;
+    //table.bits[opts.table_index] = 1;
+    //table.val[opts.table_index++] = 0;
+    table[table_index++] = (1 << 24) | (64 << 16) | 0;
+
+    opts.bits = 1;
+    return 0;     /* no symbols, but wait for decoding to report error */
+  }
+  for (min = 1; min < max; min++) {
+    if (count[min] !== 0) { break; }
+  }
+  if (root < min) {
+    root = min;
+  }
+
+  /* check for an over-subscribed or incomplete set of lengths */
+  left = 1;
+  for (len = 1; len <= MAXBITS$1; len++) {
+    left <<= 1;
+    left -= count[len];
+    if (left < 0) {
+      return -1;
+    }        /* over-subscribed */
+  }
+  if (left > 0 && (type === CODES$1$1 || max !== 1)) {
+    return -1;                      /* incomplete set */
+  }
+
+  /* generate offsets into symbol table for each length for sorting */
+  offs[1] = 0;
+  for (len = 1; len < MAXBITS$1; len++) {
+    offs[len + 1] = offs[len] + count[len];
+  }
+
+  /* sort symbols by length, by symbol order within each length */
+  for (sym = 0; sym < codes; sym++) {
+    if (lens[lens_index + sym] !== 0) {
+      work[offs[lens[lens_index + sym]]++] = sym;
+    }
+  }
+
+  /*
+   Create and fill in decoding tables.  In this loop, the table being
+   filled is at next and has curr index bits.  The code being used is huff
+   with length len.  That code is converted to an index by dropping drop
+   bits off of the bottom.  For codes where len is less than drop + curr,
+   those top drop + curr - len bits are incremented through all values to
+   fill the table with replicated entries.
+
+   root is the number of index bits for the root table.  When len exceeds
+   root, sub-tables are created pointed to by the root entry with an index
+   of the low root bits of huff.  This is saved in low to check for when a
+   new sub-table should be started.  drop is zero when the root table is
+   being filled, and drop is root when sub-tables are being filled.
+
+   When a new sub-table is needed, it is necessary to look ahead in the
+   code lengths to determine what size sub-table is needed.  The length
+   counts are used for this, and so count[] is decremented as codes are
+   entered in the tables.
+
+   used keeps track of how many table entries have been allocated from the
+   provided *table space.  It is checked for LENS and DIST tables against
+   the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
+   the initial root table size constants.  See the comments in inftrees.h
+   for more information.
+
+   sym increments through all symbols, and the loop terminates when
+   all codes of length max, i.e. all codes, have been processed.  This
+   routine permits incomplete codes, so another loop after this one fills
+   in the rest of the decoding tables with invalid code markers.
+   */
+
+  /* set up for code type */
+  // poor man optimization - use if-else instead of switch,
+  // to avoid deopts in old v8
+  if (type === CODES$1$1) {
+    base = extra = work;    /* dummy value--not used */
+    match = 20;
+
+  } else if (type === LENS$1$1) {
+    base = lbase$1;
+    extra = lext$1;
+    match = 257;
+
+  } else {                    /* DISTS */
+    base = dbase$1;
+    extra = dext$1;
+    match = 0;
+  }
+
+  /* initialize opts for loop */
+  huff = 0;                   /* starting code */
+  sym = 0;                    /* starting code symbol */
+  len = min;                  /* starting code length */
+  next = table_index;              /* current table to fill in */
+  curr = root;                /* current table index bits */
+  drop = 0;                   /* current bits to drop from code for index */
+  low = -1;                   /* trigger new sub-table when len > root */
+  used = 1 << root;          /* use root table entries */
+  mask = used - 1;            /* mask for comparing low */
+
+  /* check available table space */
+  if ((type === LENS$1$1 && used > ENOUGH_LENS$1$1) ||
+    (type === DISTS$1$1 && used > ENOUGH_DISTS$1$1)) {
+    return 1;
+  }
+
+  /* process all codes and make table entries */
+  for (;;) {
+    /* create table entry */
+    here_bits = len - drop;
+    if (work[sym] + 1 < match) {
+      here_op = 0;
+      here_val = work[sym];
+    }
+    else if (work[sym] >= match) {
+      here_op = extra[work[sym] - match];
+      here_val = base[work[sym] - match];
+    }
+    else {
+      here_op = 32 + 64;         /* end of block */
+      here_val = 0;
+    }
+
+    /* replicate for those indices with low len bits equal to huff */
+    incr = 1 << (len - drop);
+    fill = 1 << curr;
+    min = fill;                 /* save offset to next table */
+    do {
+      fill -= incr;
+      table[next + (huff >> drop) + fill] = (here_bits << 24) | (here_op << 16) | here_val |0;
+    } while (fill !== 0);
+
+    /* backwards increment the len-bit code huff */
+    incr = 1 << (len - 1);
+    while (huff & incr) {
+      incr >>= 1;
+    }
+    if (incr !== 0) {
+      huff &= incr - 1;
+      huff += incr;
+    } else {
+      huff = 0;
+    }
+
+    /* go to next symbol, update count, len */
+    sym++;
+    if (--count[len] === 0) {
+      if (len === max) { break; }
+      len = lens[lens_index + work[sym]];
+    }
+
+    /* create new sub-table if needed */
+    if (len > root && (huff & mask) !== low) {
+      /* if first time, transition to sub-tables */
+      if (drop === 0) {
+        drop = root;
+      }
+
+      /* increment past last table */
+      next += min;            /* here min is 1 << curr */
+
+      /* determine length of next table */
+      curr = len - drop;
+      left = 1 << curr;
+      while (curr + drop < max) {
+        left -= count[curr + drop];
+        if (left <= 0) { break; }
+        curr++;
+        left <<= 1;
+      }
+
+      /* check for enough space */
+      used += 1 << curr;
+      if ((type === LENS$1$1 && used > ENOUGH_LENS$1$1) ||
+        (type === DISTS$1$1 && used > ENOUGH_DISTS$1$1)) {
+        return 1;
+      }
+
+      /* point entry in root table to sub-table */
+      low = huff & mask;
+      /*table.op[low] = curr;
+      table.bits[low] = root;
+      table.val[low] = next - opts.table_index;*/
+      table[low] = (root << 24) | (curr << 16) | (next - table_index) |0;
+    }
+  }
+
+  /* fill in remaining table entry if code is incomplete (guaranteed to have
+   at most one remaining entry, since if the code is incomplete, the
+   maximum code length that was allowed to get this far is one bit) */
+  if (huff !== 0) {
+    //table.op[next + huff] = 64;            /* invalid code marker */
+    //table.bits[next + huff] = len - drop;
+    //table.val[next + huff] = 0;
+    table[next + huff] = ((len - drop) << 24) | (64 << 16) |0;
+  }
+
+  /* set return parameters */
+  //opts.table_index += used;
+  opts.bits = root;
+  return 0;
+};
+
+
+var inftrees$1 = inflate_table$1;
+
+// (C) 1995-2013 Jean-loup Gailly and Mark Adler
+// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//   claim that you wrote the original software. If you use this software
+//   in a product, an acknowledgment in the product documentation would be
+//   appreciated but is not required.
+// 2. Altered source versions must be plainly marked as such, and must not be
+//   misrepresented as being the original software.
+// 3. This notice may not be removed or altered from any source distribution.
+
+
+
+
+
+
+const CODES$2 = 0;
+const LENS$2 = 1;
+const DISTS$2 = 2;
+
+/* Public constants ==========================================================*/
+/* ===========================================================================*/
+
+const {
+  Z_FINISH: Z_FINISH$1$1, Z_BLOCK: Z_BLOCK$2, Z_TREES: Z_TREES$1,
+  Z_OK: Z_OK$1$1, Z_STREAM_END: Z_STREAM_END$1$1, Z_NEED_DICT: Z_NEED_DICT$1$1, Z_STREAM_ERROR: Z_STREAM_ERROR$1$1, Z_DATA_ERROR: Z_DATA_ERROR$1$1, Z_MEM_ERROR: Z_MEM_ERROR$1$1, Z_BUF_ERROR: Z_BUF_ERROR$2,
+  Z_DEFLATED: Z_DEFLATED$3
+} = constants$2$1;
+
+
+/* STATES ====================================================================*/
+/* ===========================================================================*/
+
+
+const    HEAD$1 = 16180;       /* i: waiting for magic header */
+const    FLAGS$1 = 16181;      /* i: waiting for method and flags (gzip) */
+const    TIME$1 = 16182;       /* i: waiting for modification time (gzip) */
+const    OS$1 = 16183;         /* i: waiting for extra flags and operating system (gzip) */
+const    EXLEN$1 = 16184;      /* i: waiting for extra length (gzip) */
+const    EXTRA$1 = 16185;      /* i: waiting for extra bytes (gzip) */
+const    NAME$1 = 16186;       /* i: waiting for end of file name (gzip) */
+const    COMMENT$1 = 16187;    /* i: waiting for end of comment (gzip) */
+const    HCRC$1 = 16188;       /* i: waiting for header crc (gzip) */
+const    DICTID$1 = 16189;    /* i: waiting for dictionary check value */
+const    DICT$1 = 16190;      /* waiting for inflateSetDictionary() call */
+const        TYPE$2 = 16191;      /* i: waiting for type bits, including last-flag bit */
+const        TYPEDO$1 = 16192;    /* i: same, but skip check to exit inflate on new block */
+const        STORED$1 = 16193;    /* i: waiting for stored size (length and complement) */
+const        COPY_$1 = 16194;     /* i/o: same as COPY below, but only first time in */
+const        COPY$1 = 16195;      /* i/o: waiting for input or output to copy stored block */
+const        TABLE$1 = 16196;     /* i: waiting for dynamic block table lengths */
+const        LENLENS$1 = 16197;   /* i: waiting for code length code lengths */
+const        CODELENS$1 = 16198;  /* i: waiting for length/lit and distance code lengths */
+const            LEN_$1 = 16199;      /* i: same as LEN below, but only first time in */
+const            LEN$1 = 16200;       /* i: waiting for length/lit/eob code */
+const            LENEXT$1 = 16201;    /* i: waiting for length extra bits */
+const            DIST$1 = 16202;      /* i: waiting for distance code */
+const            DISTEXT$1 = 16203;   /* i: waiting for distance extra bits */
+const            MATCH$1 = 16204;     /* o: waiting for output space to copy string */
+const            LIT$1 = 16205;       /* o: waiting for output space to write literal */
+const    CHECK$1 = 16206;     /* i: waiting for 32-bit check value */
+const    LENGTH$1 = 16207;    /* i: waiting for 32-bit length (gzip) */
+const    DONE$1 = 16208;      /* finished check, done -- remain here until reset */
+const    BAD$2 = 16209;       /* got a data error -- remain here until reset */
+const    MEM$1 = 16210;       /* got an inflate() memory error -- remain here until reset */
+const    SYNC$1 = 16211;      /* looking for synchronization bytes to restart inflate() */
+
+/* ===========================================================================*/
+
+
+
+const ENOUGH_LENS$2 = 852;
+const ENOUGH_DISTS$2 = 592;
+//const ENOUGH =  (ENOUGH_LENS+ENOUGH_DISTS);
+
+const MAX_WBITS$2 = 15;
+/* 32K LZ77 window */
+const DEF_WBITS$1 = MAX_WBITS$2;
+
+
+const zswap32$1 = (q) => {
+
+  return  (((q >>> 24) & 0xff) +
+          ((q >>> 8) & 0xff00) +
+          ((q & 0xff00) << 8) +
+          ((q & 0xff) << 24));
+};
+
+
+function InflateState$1() {
+  this.strm = null;           /* pointer back to this zlib stream */
+  this.mode = 0;              /* current inflate mode */
+  this.last = false;          /* true if processing last block */
+  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip,
+                                 bit 2 true to validate check value */
+  this.havedict = false;      /* true if dictionary provided */
+  this.flags = 0;             /* gzip header method and flags (0 if zlib), or
+                                 -1 if raw or no header yet */
+  this.dmax = 0;              /* zlib header max distance (INFLATE_STRICT) */
+  this.check = 0;             /* protected copy of check value */
+  this.total = 0;             /* protected copy of output count */
+  // TODO: may be {}
+  this.head = null;           /* where to save gzip header information */
+
+  /* sliding window */
+  this.wbits = 0;             /* log base 2 of requested window size */
+  this.wsize = 0;             /* window size or zero if not using window */
+  this.whave = 0;             /* valid bytes in the window */
+  this.wnext = 0;             /* window write index */
+  this.window = null;         /* allocated sliding window, if needed */
+
+  /* bit accumulator */
+  this.hold = 0;              /* input bit accumulator */
+  this.bits = 0;              /* number of bits in "in" */
+
+  /* for string and stored block copying */
+  this.length = 0;            /* literal or length of data to copy */
+  this.offset = 0;            /* distance back to copy string from */
+
+  /* for table and code decoding */
+  this.extra = 0;             /* extra bits needed */
+
+  /* fixed and dynamic code tables */
+  this.lencode = null;          /* starting table for length/literal codes */
+  this.distcode = null;         /* starting table for distance codes */
+  this.lenbits = 0;           /* index bits for lencode */
+  this.distbits = 0;          /* index bits for distcode */
+
+  /* dynamic table building */
+  this.ncode = 0;             /* number of code length code lengths */
+  this.nlen = 0;              /* number of length code lengths */
+  this.ndist = 0;             /* number of distance code lengths */
+  this.have = 0;              /* number of code lengths in lens[] */
+  this.next = null;              /* next available space in codes[] */
+
+  this.lens = new Uint16Array(320); /* temporary storage for code lengths */
+  this.work = new Uint16Array(288); /* work area for code table building */
+
+  /*
+   because we don't have pointers in js, we use lencode and distcode directly
+   as buffers so we don't need codes
+  */
+  //this.codes = new Int32Array(ENOUGH);       /* space for code tables */
+  this.lendyn = null;              /* dynamic table for length/literal codes (JS specific) */
+  this.distdyn = null;             /* dynamic table for distance codes (JS specific) */
+  this.sane = 0;                   /* if false, allow invalid distance too far */
+  this.back = 0;                   /* bits back of last unprocessed length/lit */
+  this.was = 0;                    /* initial length of match */
+}
+
+
+const inflateStateCheck = (strm) => {
+
+  if (!strm) {
+    return 1;
+  }
+  const state = strm.state;
+  if (!state || state.strm !== strm ||
+    state.mode < HEAD$1 || state.mode > SYNC$1) {
+    return 1;
+  }
+  return 0;
+};
+
+
+const inflateResetKeep$1 = (strm) => {
+
+  if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1$1; }
+  const state = strm.state;
+  strm.total_in = strm.total_out = state.total = 0;
+  strm.msg = ''; /*Z_NULL*/
+  if (state.wrap) {       /* to support ill-conceived Java test suite */
+    strm.adler = state.wrap & 1;
+  }
+  state.mode = HEAD$1;
+  state.last = 0;
+  state.havedict = 0;
+  state.flags = -1;
+  state.dmax = 32768;
+  state.head = null/*Z_NULL*/;
+  state.hold = 0;
+  state.bits = 0;
+  //state.lencode = state.distcode = state.next = state.codes;
+  state.lencode = state.lendyn = new Int32Array(ENOUGH_LENS$2);
+  state.distcode = state.distdyn = new Int32Array(ENOUGH_DISTS$2);
+
+  state.sane = 1;
+  state.back = -1;
+  //Tracev((stderr, "inflate: reset\n"));
+  return Z_OK$1$1;
+};
+
+
+const inflateReset$1 = (strm) => {
+
+  if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1$1; }
+  const state = strm.state;
+  state.wsize = 0;
+  state.whave = 0;
+  state.wnext = 0;
+  return inflateResetKeep$1(strm);
+
+};
+
+
+const inflateReset2$1 = (strm, windowBits) => {
+  let wrap;
+
+  /* get the state */
+  if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1$1; }
+  const state = strm.state;
+
+  /* extract wrap request from windowBits parameter */
+  if (windowBits < 0) {
+    wrap = 0;
+    windowBits = -windowBits;
+  }
+  else {
+    wrap = (windowBits >> 4) + 5;
+    if (windowBits < 48) {
+      windowBits &= 15;
+    }
+  }
+
+  /* set number of window bits, free window if different */
+  if (windowBits && (windowBits < 8 || windowBits > 15)) {
+    return Z_STREAM_ERROR$1$1;
+  }
+  if (state.window !== null && state.wbits !== windowBits) {
+    state.window = null;
+  }
+
+  /* update state and reset the rest of it */
+  state.wrap = wrap;
+  state.wbits = windowBits;
+  return inflateReset$1(strm);
+};
+
+
+const inflateInit2$1 = (strm, windowBits) => {
+
+  if (!strm) { return Z_STREAM_ERROR$1$1; }
+  //strm.msg = Z_NULL;                 /* in case we return an error */
+
+  const state = new InflateState$1();
+
+  //if (state === Z_NULL) return Z_MEM_ERROR;
+  //Tracev((stderr, "inflate: allocated\n"));
+  strm.state = state;
+  state.strm = strm;
+  state.window = null/*Z_NULL*/;
+  state.mode = HEAD$1;     /* to pass state test in inflateReset2() */
+  const ret = inflateReset2$1(strm, windowBits);
+  if (ret !== Z_OK$1$1) {
+    strm.state = null/*Z_NULL*/;
+  }
+  return ret;
+};
+
+
+const inflateInit$1 = (strm) => {
+
+  return inflateInit2$1(strm, DEF_WBITS$1);
+};
+
+
+/*
+ Return state with length and distance decoding tables and index sizes set to
+ fixed code decoding.  Normally this returns fixed tables from inffixed.h.
+ If BUILDFIXED is defined, then instead this routine builds the tables the
+ first time it's called, and returns those tables the first time and
+ thereafter.  This reduces the size of the code by about 2K bytes, in
+ exchange for a little execution time.  However, BUILDFIXED should not be
+ used for threaded applications, since the rewriting of the tables and virgin
+ may not be thread-safe.
+ */
+let virgin$1 = true;
+
+let lenfix$1, distfix$1; // We have no pointers in JS, so keep tables separate
+
+
+const fixedtables$1 = (state) => {
+
+  /* build fixed huffman tables if first call (may not be thread safe) */
+  if (virgin$1) {
+    lenfix$1 = new Int32Array(512);
+    distfix$1 = new Int32Array(32);
+
+    /* literal/length table */
+    let sym = 0;
+    while (sym < 144) { state.lens[sym++] = 8; }
+    while (sym < 256) { state.lens[sym++] = 9; }
+    while (sym < 280) { state.lens[sym++] = 7; }
+    while (sym < 288) { state.lens[sym++] = 8; }
+
+    inftrees$1(LENS$2,  state.lens, 0, 288, lenfix$1,   0, state.work, { bits: 9 });
+
+    /* distance table */
+    sym = 0;
+    while (sym < 32) { state.lens[sym++] = 5; }
+
+    inftrees$1(DISTS$2, state.lens, 0, 32,   distfix$1, 0, state.work, { bits: 5 });
+
+    /* do this just once */
+    virgin$1 = false;
+  }
+
+  state.lencode = lenfix$1;
+  state.lenbits = 9;
+  state.distcode = distfix$1;
+  state.distbits = 5;
+};
+
+
+/*
+ Update the window with the last wsize (normally 32K) bytes written before
+ returning.  If window does not exist yet, create it.  This is only called
+ when a window is already in use, or when output has been written during this
+ inflate call, but the end of the deflate stream has not been reached yet.
+ It is also called to create a window for dictionary data when a dictionary
+ is loaded.
+
+ Providing output buffers larger than 32K to inflate() should provide a speed
+ advantage, since only the last 32K of output is copied to the sliding window
+ upon return from inflate(), and since all distances after the first 32K of
+ output will fall in the output data, making match copies simpler and faster.
+ The advantage may be dependent on the size of the processor's data caches.
+ */
+const updatewindow$1 = (strm, src, end, copy) => {
+
+  let dist;
+  const state = strm.state;
+
+  /* if it hasn't been done already, allocate space for the window */
+  if (state.window === null) {
+    state.wsize = 1 << state.wbits;
+    state.wnext = 0;
+    state.whave = 0;
+
+    state.window = new Uint8Array(state.wsize);
+  }
+
+  /* copy state->wsize or less output bytes into the circular window */
+  if (copy >= state.wsize) {
+    state.window.set(src.subarray(end - state.wsize, end), 0);
+    state.wnext = 0;
+    state.whave = state.wsize;
+  }
+  else {
+    dist = state.wsize - state.wnext;
+    if (dist > copy) {
+      dist = copy;
+    }
+    //zmemcpy(state->window + state->wnext, end - copy, dist);
+    state.window.set(src.subarray(end - copy, end - copy + dist), state.wnext);
+    copy -= dist;
+    if (copy) {
+      //zmemcpy(state->window, end - copy, copy);
+      state.window.set(src.subarray(end - copy, end), 0);
+      state.wnext = copy;
+      state.whave = state.wsize;
+    }
+    else {
+      state.wnext += dist;
+      if (state.wnext === state.wsize) { state.wnext = 0; }
+      if (state.whave < state.wsize) { state.whave += dist; }
+    }
+  }
+  return 0;
+};
+
+
+const inflate$2$1 = (strm, flush) => {
+
+  let state;
+  let input, output;          // input/output buffers
+  let next;                   /* next input INDEX */
+  let put;                    /* next output INDEX */
+  let have, left;             /* available input and output */
+  let hold;                   /* bit buffer */
+  let bits;                   /* bits in bit buffer */
+  let _in, _out;              /* save starting available input and output */
+  let copy;                   /* number of stored or match bytes to copy */
+  let from;                   /* where to copy match bytes from */
+  let from_source;
+  let here = 0;               /* current decoding table entry */
+  let here_bits, here_op, here_val; // paked "here" denormalized (JS specific)
+  //let last;                   /* parent table entry */
+  let last_bits, last_op, last_val; // paked "last" denormalized (JS specific)
+  let len;                    /* length to copy for repeats, bits to drop */
+  let ret;                    /* return code */
+  const hbuf = new Uint8Array(4);    /* buffer for gzip header crc calculation */
+  let opts;
+
+  let n; // temporary variable for NEED_BITS
+
+  const order = /* permutation of code lengths */
+    new Uint8Array([ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ]);
+
+
+  if (inflateStateCheck(strm) || !strm.output ||
+      (!strm.input && strm.avail_in !== 0)) {
+    return Z_STREAM_ERROR$1$1;
+  }
+
+  state = strm.state;
+  if (state.mode === TYPE$2) { state.mode = TYPEDO$1; }    /* skip check */
+
+
+  //--- LOAD() ---
+  put = strm.next_out;
+  output = strm.output;
+  left = strm.avail_out;
+  next = strm.next_in;
+  input = strm.input;
+  have = strm.avail_in;
+  hold = state.hold;
+  bits = state.bits;
+  //---
+
+  _in = have;
+  _out = left;
+  ret = Z_OK$1$1;
+
+  inf_leave: // goto emulation
+  for (;;) {
+    switch (state.mode) {
+      case HEAD$1:
+        if (state.wrap === 0) {
+          state.mode = TYPEDO$1;
+          break;
+        }
+        //=== NEEDBITS(16);
+        while (bits < 16) {
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+        }
+        //===//
+        if ((state.wrap & 2) && hold === 0x8b1f) {  /* gzip header */
+          if (state.wbits === 0) {
+            state.wbits = 15;
+          }
+          state.check = 0/*crc32(0L, Z_NULL, 0)*/;
+          //=== CRC2(state.check, hold);
+          hbuf[0] = hold & 0xff;
+          hbuf[1] = (hold >>> 8) & 0xff;
+          state.check = crc32_1$1(state.check, hbuf, 2, 0);
+          //===//
+
+          //=== INITBITS();
+          hold = 0;
+          bits = 0;
+          //===//
+          state.mode = FLAGS$1;
+          break;
+        }
+        if (state.head) {
+          state.head.done = false;
+        }
+        if (!(state.wrap & 1) ||   /* check if zlib header allowed */
+          (((hold & 0xff)/*BITS(8)*/ << 8) + (hold >> 8)) % 31) {
+          strm.msg = 'incorrect header check';
+          state.mode = BAD$2;
+          break;
+        }
+        if ((hold & 0x0f)/*BITS(4)*/ !== Z_DEFLATED$3) {
+          strm.msg = 'unknown compression method';
+          state.mode = BAD$2;
+          break;
+        }
+        //--- DROPBITS(4) ---//
+        hold >>>= 4;
+        bits -= 4;
+        //---//
+        len = (hold & 0x0f)/*BITS(4)*/ + 8;
+        if (state.wbits === 0) {
+          state.wbits = len;
+        }
+        if (len > 15 || len > state.wbits) {
+          strm.msg = 'invalid window size';
+          state.mode = BAD$2;
+          break;
+        }
+
+        // !!! pako patch. Force use `options.windowBits` if passed.
+        // Required to always use max window size by default.
+        state.dmax = 1 << state.wbits;
+        //state.dmax = 1 << len;
+
+        state.flags = 0;               /* indicate zlib header */
+        //Tracev((stderr, "inflate:   zlib header ok\n"));
+        strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
+        state.mode = hold & 0x200 ? DICTID$1 : TYPE$2;
+        //=== INITBITS();
+        hold = 0;
+        bits = 0;
+        //===//
+        break;
+      case FLAGS$1:
+        //=== NEEDBITS(16); */
+        while (bits < 16) {
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+        }
+        //===//
+        state.flags = hold;
+        if ((state.flags & 0xff) !== Z_DEFLATED$3) {
+          strm.msg = 'unknown compression method';
+          state.mode = BAD$2;
+          break;
+        }
+        if (state.flags & 0xe000) {
+          strm.msg = 'unknown header flags set';
+          state.mode = BAD$2;
+          break;
+        }
+        if (state.head) {
+          state.head.text = ((hold >> 8) & 1);
+        }
+        if ((state.flags & 0x0200) && (state.wrap & 4)) {
+          //=== CRC2(state.check, hold);
+          hbuf[0] = hold & 0xff;
+          hbuf[1] = (hold >>> 8) & 0xff;
+          state.check = crc32_1$1(state.check, hbuf, 2, 0);
+          //===//
+        }
+        //=== INITBITS();
+        hold = 0;
+        bits = 0;
+        //===//
+        state.mode = TIME$1;
+        /* falls through */
+      case TIME$1:
+        //=== NEEDBITS(32); */
+        while (bits < 32) {
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+        }
+        //===//
+        if (state.head) {
+          state.head.time = hold;
+        }
+        if ((state.flags & 0x0200) && (state.wrap & 4)) {
+          //=== CRC4(state.check, hold)
+          hbuf[0] = hold & 0xff;
+          hbuf[1] = (hold >>> 8) & 0xff;
+          hbuf[2] = (hold >>> 16) & 0xff;
+          hbuf[3] = (hold >>> 24) & 0xff;
+          state.check = crc32_1$1(state.check, hbuf, 4, 0);
+          //===
+        }
+        //=== INITBITS();
+        hold = 0;
+        bits = 0;
+        //===//
+        state.mode = OS$1;
+        /* falls through */
+      case OS$1:
+        //=== NEEDBITS(16); */
+        while (bits < 16) {
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+        }
+        //===//
+        if (state.head) {
+          state.head.xflags = (hold & 0xff);
+          state.head.os = (hold >> 8);
+        }
+        if ((state.flags & 0x0200) && (state.wrap & 4)) {
+          //=== CRC2(state.check, hold);
+          hbuf[0] = hold & 0xff;
+          hbuf[1] = (hold >>> 8) & 0xff;
+          state.check = crc32_1$1(state.check, hbuf, 2, 0);
+          //===//
+        }
+        //=== INITBITS();
+        hold = 0;
+        bits = 0;
+        //===//
+        state.mode = EXLEN$1;
+        /* falls through */
+      case EXLEN$1:
+        if (state.flags & 0x0400) {
+          //=== NEEDBITS(16); */
+          while (bits < 16) {
+            if (have === 0) { break inf_leave; }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+          }
+          //===//
+          state.length = hold;
+          if (state.head) {
+            state.head.extra_len = hold;
+          }
+          if ((state.flags & 0x0200) && (state.wrap & 4)) {
+            //=== CRC2(state.check, hold);
+            hbuf[0] = hold & 0xff;
+            hbuf[1] = (hold >>> 8) & 0xff;
+            state.check = crc32_1$1(state.check, hbuf, 2, 0);
+            //===//
+          }
+          //=== INITBITS();
+          hold = 0;
+          bits = 0;
+          //===//
+        }
+        else if (state.head) {
+          state.head.extra = null/*Z_NULL*/;
+        }
+        state.mode = EXTRA$1;
+        /* falls through */
+      case EXTRA$1:
+        if (state.flags & 0x0400) {
+          copy = state.length;
+          if (copy > have) { copy = have; }
+          if (copy) {
+            if (state.head) {
+              len = state.head.extra_len - state.length;
+              if (!state.head.extra) {
+                // Use untyped array for more convenient processing later
+                state.head.extra = new Uint8Array(state.head.extra_len);
+              }
+              state.head.extra.set(
+                input.subarray(
+                  next,
+                  // extra field is limited to 65536 bytes
+                  // - no need for additional size check
+                  next + copy
+                ),
+                /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/
+                len
+              );
+              //zmemcpy(state.head.extra + len, next,
+              //        len + copy > state.head.extra_max ?
+              //        state.head.extra_max - len : copy);
+            }
+            if ((state.flags & 0x0200) && (state.wrap & 4)) {
+              state.check = crc32_1$1(state.check, input, copy, next);
+            }
+            have -= copy;
+            next += copy;
+            state.length -= copy;
+          }
+          if (state.length) { break inf_leave; }
+        }
+        state.length = 0;
+        state.mode = NAME$1;
+        /* falls through */
+      case NAME$1:
+        if (state.flags & 0x0800) {
+          if (have === 0) { break inf_leave; }
+          copy = 0;
+          do {
+            // TODO: 2 or 1 bytes?
+            len = input[next + copy++];
+            /* use constant limit because in js we should not preallocate memory */
+            if (state.head && len &&
+                (state.length < 65536 /*state.head.name_max*/)) {
+              state.head.name += String.fromCharCode(len);
+            }
+          } while (len && copy < have);
+
+          if ((state.flags & 0x0200) && (state.wrap & 4)) {
+            state.check = crc32_1$1(state.check, input, copy, next);
+          }
+          have -= copy;
+          next += copy;
+          if (len) { break inf_leave; }
+        }
+        else if (state.head) {
+          state.head.name = null;
+        }
+        state.length = 0;
+        state.mode = COMMENT$1;
+        /* falls through */
+      case COMMENT$1:
+        if (state.flags & 0x1000) {
+          if (have === 0) { break inf_leave; }
+          copy = 0;
+          do {
+            len = input[next + copy++];
+            /* use constant limit because in js we should not preallocate memory */
+            if (state.head && len &&
+                (state.length < 65536 /*state.head.comm_max*/)) {
+              state.head.comment += String.fromCharCode(len);
+            }
+          } while (len && copy < have);
+          if ((state.flags & 0x0200) && (state.wrap & 4)) {
+            state.check = crc32_1$1(state.check, input, copy, next);
+          }
+          have -= copy;
+          next += copy;
+          if (len) { break inf_leave; }
+        }
+        else if (state.head) {
+          state.head.comment = null;
+        }
+        state.mode = HCRC$1;
+        /* falls through */
+      case HCRC$1:
+        if (state.flags & 0x0200) {
+          //=== NEEDBITS(16); */
+          while (bits < 16) {
+            if (have === 0) { break inf_leave; }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+          }
+          //===//
+          if ((state.wrap & 4) && hold !== (state.check & 0xffff)) {
+            strm.msg = 'header crc mismatch';
+            state.mode = BAD$2;
+            break;
+          }
+          //=== INITBITS();
+          hold = 0;
+          bits = 0;
+          //===//
+        }
+        if (state.head) {
+          state.head.hcrc = ((state.flags >> 9) & 1);
+          state.head.done = true;
+        }
+        strm.adler = state.check = 0;
+        state.mode = TYPE$2;
+        break;
+      case DICTID$1:
+        //=== NEEDBITS(32); */
+        while (bits < 32) {
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+        }
+        //===//
+        strm.adler = state.check = zswap32$1(hold);
+        //=== INITBITS();
+        hold = 0;
+        bits = 0;
+        //===//
+        state.mode = DICT$1;
+        /* falls through */
+      case DICT$1:
+        if (state.havedict === 0) {
+          //--- RESTORE() ---
+          strm.next_out = put;
+          strm.avail_out = left;
+          strm.next_in = next;
+          strm.avail_in = have;
+          state.hold = hold;
+          state.bits = bits;
+          //---
+          return Z_NEED_DICT$1$1;
+        }
+        strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
+        state.mode = TYPE$2;
+        /* falls through */
+      case TYPE$2:
+        if (flush === Z_BLOCK$2 || flush === Z_TREES$1) { break inf_leave; }
+        /* falls through */
+      case TYPEDO$1:
+        if (state.last) {
+          //--- BYTEBITS() ---//
+          hold >>>= bits & 7;
+          bits -= bits & 7;
+          //---//
+          state.mode = CHECK$1;
+          break;
+        }
+        //=== NEEDBITS(3); */
+        while (bits < 3) {
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+        }
+        //===//
+        state.last = (hold & 0x01)/*BITS(1)*/;
+        //--- DROPBITS(1) ---//
+        hold >>>= 1;
+        bits -= 1;
+        //---//
+
+        switch ((hold & 0x03)/*BITS(2)*/) {
+          case 0:                             /* stored block */
+            //Tracev((stderr, "inflate:     stored block%s\n",
+            //        state.last ? " (last)" : ""));
+            state.mode = STORED$1;
+            break;
+          case 1:                             /* fixed block */
+            fixedtables$1(state);
+            //Tracev((stderr, "inflate:     fixed codes block%s\n",
+            //        state.last ? " (last)" : ""));
+            state.mode = LEN_$1;             /* decode codes */
+            if (flush === Z_TREES$1) {
+              //--- DROPBITS(2) ---//
+              hold >>>= 2;
+              bits -= 2;
+              //---//
+              break inf_leave;
+            }
+            break;
+          case 2:                             /* dynamic block */
+            //Tracev((stderr, "inflate:     dynamic codes block%s\n",
+            //        state.last ? " (last)" : ""));
+            state.mode = TABLE$1;
+            break;
+          case 3:
+            strm.msg = 'invalid block type';
+            state.mode = BAD$2;
+        }
+        //--- DROPBITS(2) ---//
+        hold >>>= 2;
+        bits -= 2;
+        //---//
+        break;
+      case STORED$1:
+        //--- BYTEBITS() ---// /* go to byte boundary */
+        hold >>>= bits & 7;
+        bits -= bits & 7;
+        //---//
+        //=== NEEDBITS(32); */
+        while (bits < 32) {
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+        }
+        //===//
+        if ((hold & 0xffff) !== ((hold >>> 16) ^ 0xffff)) {
+          strm.msg = 'invalid stored block lengths';
+          state.mode = BAD$2;
+          break;
+        }
+        state.length = hold & 0xffff;
+        //Tracev((stderr, "inflate:       stored length %u\n",
+        //        state.length));
+        //=== INITBITS();
+        hold = 0;
+        bits = 0;
+        //===//
+        state.mode = COPY_$1;
+        if (flush === Z_TREES$1) { break inf_leave; }
+        /* falls through */
+      case COPY_$1:
+        state.mode = COPY$1;
+        /* falls through */
+      case COPY$1:
+        copy = state.length;
+        if (copy) {
+          if (copy > have) { copy = have; }
+          if (copy > left) { copy = left; }
+          if (copy === 0) { break inf_leave; }
+          //--- zmemcpy(put, next, copy); ---
+          output.set(input.subarray(next, next + copy), put);
+          //---//
+          have -= copy;
+          next += copy;
+          left -= copy;
+          put += copy;
+          state.length -= copy;
+          break;
+        }
+        //Tracev((stderr, "inflate:       stored end\n"));
+        state.mode = TYPE$2;
+        break;
+      case TABLE$1:
+        //=== NEEDBITS(14); */
+        while (bits < 14) {
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+        }
+        //===//
+        state.nlen = (hold & 0x1f)/*BITS(5)*/ + 257;
+        //--- DROPBITS(5) ---//
+        hold >>>= 5;
+        bits -= 5;
+        //---//
+        state.ndist = (hold & 0x1f)/*BITS(5)*/ + 1;
+        //--- DROPBITS(5) ---//
+        hold >>>= 5;
+        bits -= 5;
+        //---//
+        state.ncode = (hold & 0x0f)/*BITS(4)*/ + 4;
+        //--- DROPBITS(4) ---//
+        hold >>>= 4;
+        bits -= 4;
+        //---//
+//#ifndef PKZIP_BUG_WORKAROUND
+        if (state.nlen > 286 || state.ndist > 30) {
+          strm.msg = 'too many length or distance symbols';
+          state.mode = BAD$2;
+          break;
+        }
+//#endif
+        //Tracev((stderr, "inflate:       table sizes ok\n"));
+        state.have = 0;
+        state.mode = LENLENS$1;
+        /* falls through */
+      case LENLENS$1:
+        while (state.have < state.ncode) {
+          //=== NEEDBITS(3);
+          while (bits < 3) {
+            if (have === 0) { break inf_leave; }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+          }
+          //===//
+          state.lens[order[state.have++]] = (hold & 0x07);//BITS(3);
+          //--- DROPBITS(3) ---//
+          hold >>>= 3;
+          bits -= 3;
+          //---//
+        }
+        while (state.have < 19) {
+          state.lens[order[state.have++]] = 0;
+        }
+        // We have separate tables & no pointers. 2 commented lines below not needed.
+        //state.next = state.codes;
+        //state.lencode = state.next;
+        // Switch to use dynamic table
+        state.lencode = state.lendyn;
+        state.lenbits = 7;
+
+        opts = { bits: state.lenbits };
+        ret = inftrees$1(CODES$2, state.lens, 0, 19, state.lencode, 0, state.work, opts);
+        state.lenbits = opts.bits;
+
+        if (ret) {
+          strm.msg = 'invalid code lengths set';
+          state.mode = BAD$2;
+          break;
+        }
+        //Tracev((stderr, "inflate:       code lengths ok\n"));
+        state.have = 0;
+        state.mode = CODELENS$1;
+        /* falls through */
+      case CODELENS$1:
+        while (state.have < state.nlen + state.ndist) {
+          for (;;) {
+            here = state.lencode[hold & ((1 << state.lenbits) - 1)];/*BITS(state.lenbits)*/
+            here_bits = here >>> 24;
+            here_op = (here >>> 16) & 0xff;
+            here_val = here & 0xffff;
+
+            if ((here_bits) <= bits) { break; }
+            //--- PULLBYTE() ---//
+            if (have === 0) { break inf_leave; }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+            //---//
+          }
+          if (here_val < 16) {
+            //--- DROPBITS(here.bits) ---//
+            hold >>>= here_bits;
+            bits -= here_bits;
+            //---//
+            state.lens[state.have++] = here_val;
+          }
+          else {
+            if (here_val === 16) {
+              //=== NEEDBITS(here.bits + 2);
+              n = here_bits + 2;
+              while (bits < n) {
+                if (have === 0) { break inf_leave; }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              //===//
+              //--- DROPBITS(here.bits) ---//
+              hold >>>= here_bits;
+              bits -= here_bits;
+              //---//
+              if (state.have === 0) {
+                strm.msg = 'invalid bit length repeat';
+                state.mode = BAD$2;
+                break;
+              }
+              len = state.lens[state.have - 1];
+              copy = 3 + (hold & 0x03);//BITS(2);
+              //--- DROPBITS(2) ---//
+              hold >>>= 2;
+              bits -= 2;
+              //---//
+            }
+            else if (here_val === 17) {
+              //=== NEEDBITS(here.bits + 3);
+              n = here_bits + 3;
+              while (bits < n) {
+                if (have === 0) { break inf_leave; }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              //===//
+              //--- DROPBITS(here.bits) ---//
+              hold >>>= here_bits;
+              bits -= here_bits;
+              //---//
+              len = 0;
+              copy = 3 + (hold & 0x07);//BITS(3);
+              //--- DROPBITS(3) ---//
+              hold >>>= 3;
+              bits -= 3;
+              //---//
+            }
+            else {
+              //=== NEEDBITS(here.bits + 7);
+              n = here_bits + 7;
+              while (bits < n) {
+                if (have === 0) { break inf_leave; }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              //===//
+              //--- DROPBITS(here.bits) ---//
+              hold >>>= here_bits;
+              bits -= here_bits;
+              //---//
+              len = 0;
+              copy = 11 + (hold & 0x7f);//BITS(7);
+              //--- DROPBITS(7) ---//
+              hold >>>= 7;
+              bits -= 7;
+              //---//
+            }
+            if (state.have + copy > state.nlen + state.ndist) {
+              strm.msg = 'invalid bit length repeat';
+              state.mode = BAD$2;
+              break;
+            }
+            while (copy--) {
+              state.lens[state.have++] = len;
+            }
+          }
+        }
+
+        /* handle error breaks in while */
+        if (state.mode === BAD$2) { break; }
+
+        /* check for end-of-block code (better have one) */
+        if (state.lens[256] === 0) {
+          strm.msg = 'invalid code -- missing end-of-block';
+          state.mode = BAD$2;
+          break;
+        }
+
+        /* build code tables -- note: do not change the lenbits or distbits
+           values here (9 and 6) without reading the comments in inftrees.h
+           concerning the ENOUGH constants, which depend on those values */
+        state.lenbits = 9;
+
+        opts = { bits: state.lenbits };
+        ret = inftrees$1(LENS$2, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts);
+        // We have separate tables & no pointers. 2 commented lines below not needed.
+        // state.next_index = opts.table_index;
+        state.lenbits = opts.bits;
+        // state.lencode = state.next;
+
+        if (ret) {
+          strm.msg = 'invalid literal/lengths set';
+          state.mode = BAD$2;
+          break;
+        }
+
+        state.distbits = 6;
+        //state.distcode.copy(state.codes);
+        // Switch to use dynamic table
+        state.distcode = state.distdyn;
+        opts = { bits: state.distbits };
+        ret = inftrees$1(DISTS$2, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts);
+        // We have separate tables & no pointers. 2 commented lines below not needed.
+        // state.next_index = opts.table_index;
+        state.distbits = opts.bits;
+        // state.distcode = state.next;
+
+        if (ret) {
+          strm.msg = 'invalid distances set';
+          state.mode = BAD$2;
+          break;
+        }
+        //Tracev((stderr, 'inflate:       codes ok\n'));
+        state.mode = LEN_$1;
+        if (flush === Z_TREES$1) { break inf_leave; }
+        /* falls through */
+      case LEN_$1:
+        state.mode = LEN$1;
+        /* falls through */
+      case LEN$1:
+        if (have >= 6 && left >= 258) {
+          //--- RESTORE() ---
+          strm.next_out = put;
+          strm.avail_out = left;
+          strm.next_in = next;
+          strm.avail_in = have;
+          state.hold = hold;
+          state.bits = bits;
+          //---
+          inffast$1(strm, _out);
+          //--- LOAD() ---
+          put = strm.next_out;
+          output = strm.output;
+          left = strm.avail_out;
+          next = strm.next_in;
+          input = strm.input;
+          have = strm.avail_in;
+          hold = state.hold;
+          bits = state.bits;
+          //---
+
+          if (state.mode === TYPE$2) {
+            state.back = -1;
+          }
+          break;
+        }
+        state.back = 0;
+        for (;;) {
+          here = state.lencode[hold & ((1 << state.lenbits) - 1)];  /*BITS(state.lenbits)*/
+          here_bits = here >>> 24;
+          here_op = (here >>> 16) & 0xff;
+          here_val = here & 0xffff;
+
+          if (here_bits <= bits) { break; }
+          //--- PULLBYTE() ---//
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+          //---//
+        }
+        if (here_op && (here_op & 0xf0) === 0) {
+          last_bits = here_bits;
+          last_op = here_op;
+          last_val = here_val;
+          for (;;) {
+            here = state.lencode[last_val +
+                    ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];
+            here_bits = here >>> 24;
+            here_op = (here >>> 16) & 0xff;
+            here_val = here & 0xffff;
+
+            if ((last_bits + here_bits) <= bits) { break; }
+            //--- PULLBYTE() ---//
+            if (have === 0) { break inf_leave; }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+            //---//
+          }
+          //--- DROPBITS(last.bits) ---//
+          hold >>>= last_bits;
+          bits -= last_bits;
+          //---//
+          state.back += last_bits;
+        }
+        //--- DROPBITS(here.bits) ---//
+        hold >>>= here_bits;
+        bits -= here_bits;
+        //---//
+        state.back += here_bits;
+        state.length = here_val;
+        if (here_op === 0) {
+          //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
+          //        "inflate:         literal '%c'\n" :
+          //        "inflate:         literal 0x%02x\n", here.val));
+          state.mode = LIT$1;
+          break;
+        }
+        if (here_op & 32) {
+          //Tracevv((stderr, "inflate:         end of block\n"));
+          state.back = -1;
+          state.mode = TYPE$2;
+          break;
+        }
+        if (here_op & 64) {
+          strm.msg = 'invalid literal/length code';
+          state.mode = BAD$2;
+          break;
+        }
+        state.extra = here_op & 15;
+        state.mode = LENEXT$1;
+        /* falls through */
+      case LENEXT$1:
+        if (state.extra) {
+          //=== NEEDBITS(state.extra);
+          n = state.extra;
+          while (bits < n) {
+            if (have === 0) { break inf_leave; }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+          }
+          //===//
+          state.length += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;
+          //--- DROPBITS(state.extra) ---//
+          hold >>>= state.extra;
+          bits -= state.extra;
+          //---//
+          state.back += state.extra;
+        }
+        //Tracevv((stderr, "inflate:         length %u\n", state.length));
+        state.was = state.length;
+        state.mode = DIST$1;
+        /* falls through */
+      case DIST$1:
+        for (;;) {
+          here = state.distcode[hold & ((1 << state.distbits) - 1)];/*BITS(state.distbits)*/
+          here_bits = here >>> 24;
+          here_op = (here >>> 16) & 0xff;
+          here_val = here & 0xffff;
+
+          if ((here_bits) <= bits) { break; }
+          //--- PULLBYTE() ---//
+          if (have === 0) { break inf_leave; }
+          have--;
+          hold += input[next++] << bits;
+          bits += 8;
+          //---//
+        }
+        if ((here_op & 0xf0) === 0) {
+          last_bits = here_bits;
+          last_op = here_op;
+          last_val = here_val;
+          for (;;) {
+            here = state.distcode[last_val +
+                    ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];
+            here_bits = here >>> 24;
+            here_op = (here >>> 16) & 0xff;
+            here_val = here & 0xffff;
+
+            if ((last_bits + here_bits) <= bits) { break; }
+            //--- PULLBYTE() ---//
+            if (have === 0) { break inf_leave; }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+            //---//
+          }
+          //--- DROPBITS(last.bits) ---//
+          hold >>>= last_bits;
+          bits -= last_bits;
+          //---//
+          state.back += last_bits;
+        }
+        //--- DROPBITS(here.bits) ---//
+        hold >>>= here_bits;
+        bits -= here_bits;
+        //---//
+        state.back += here_bits;
+        if (here_op & 64) {
+          strm.msg = 'invalid distance code';
+          state.mode = BAD$2;
+          break;
+        }
+        state.offset = here_val;
+        state.extra = (here_op) & 15;
+        state.mode = DISTEXT$1;
+        /* falls through */
+      case DISTEXT$1:
+        if (state.extra) {
+          //=== NEEDBITS(state.extra);
+          n = state.extra;
+          while (bits < n) {
+            if (have === 0) { break inf_leave; }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+          }
+          //===//
+          state.offset += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;
+          //--- DROPBITS(state.extra) ---//
+          hold >>>= state.extra;
+          bits -= state.extra;
+          //---//
+          state.back += state.extra;
+        }
+//#ifdef INFLATE_STRICT
+        if (state.offset > state.dmax) {
+          strm.msg = 'invalid distance too far back';
+          state.mode = BAD$2;
+          break;
+        }
+//#endif
+        //Tracevv((stderr, "inflate:         distance %u\n", state.offset));
+        state.mode = MATCH$1;
+        /* falls through */
+      case MATCH$1:
+        if (left === 0) { break inf_leave; }
+        copy = _out - left;
+        if (state.offset > copy) {         /* copy from window */
+          copy = state.offset - copy;
+          if (copy > state.whave) {
+            if (state.sane) {
+              strm.msg = 'invalid distance too far back';
+              state.mode = BAD$2;
+              break;
+            }
+// (!) This block is disabled in zlib defaults,
+// don't enable it for binary compatibility
+//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
+//          Trace((stderr, "inflate.c too far\n"));
+//          copy -= state.whave;
+//          if (copy > state.length) { copy = state.length; }
+//          if (copy > left) { copy = left; }
+//          left -= copy;
+//          state.length -= copy;
+//          do {
+//            output[put++] = 0;
+//          } while (--copy);
+//          if (state.length === 0) { state.mode = LEN; }
+//          break;
+//#endif
+          }
+          if (copy > state.wnext) {
+            copy -= state.wnext;
+            from = state.wsize - copy;
+          }
+          else {
+            from = state.wnext - copy;
+          }
+          if (copy > state.length) { copy = state.length; }
+          from_source = state.window;
+        }
+        else {                              /* copy from output */
+          from_source = output;
+          from = put - state.offset;
+          copy = state.length;
+        }
+        if (copy > left) { copy = left; }
+        left -= copy;
+        state.length -= copy;
+        do {
+          output[put++] = from_source[from++];
+        } while (--copy);
+        if (state.length === 0) { state.mode = LEN$1; }
+        break;
+      case LIT$1:
+        if (left === 0) { break inf_leave; }
+        output[put++] = state.length;
+        left--;
+        state.mode = LEN$1;
+        break;
+      case CHECK$1:
+        if (state.wrap) {
+          //=== NEEDBITS(32);
+          while (bits < 32) {
+            if (have === 0) { break inf_leave; }
+            have--;
+            // Use '|' instead of '+' to make sure that result is signed
+            hold |= input[next++] << bits;
+            bits += 8;
+          }
+          //===//
+          _out -= left;
+          strm.total_out += _out;
+          state.total += _out;
+          if ((state.wrap & 4) && _out) {
+            strm.adler = state.check =
+                /*UPDATE_CHECK(state.check, put - _out, _out);*/
+                (state.flags ? crc32_1$1(state.check, output, _out, put - _out) : adler32_1$1(state.check, output, _out, put - _out));
+
+          }
+          _out = left;
+          // NB: crc32 stored as signed 32-bit int, zswap32 returns signed too
+          if ((state.wrap & 4) && (state.flags ? hold : zswap32$1(hold)) !== state.check) {
+            strm.msg = 'incorrect data check';
+            state.mode = BAD$2;
+            break;
+          }
+          //=== INITBITS();
+          hold = 0;
+          bits = 0;
+          //===//
+          //Tracev((stderr, "inflate:   check matches trailer\n"));
+        }
+        state.mode = LENGTH$1;
+        /* falls through */
+      case LENGTH$1:
+        if (state.wrap && state.flags) {
+          //=== NEEDBITS(32);
+          while (bits < 32) {
+            if (have === 0) { break inf_leave; }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+          }
+          //===//
+          if ((state.wrap & 4) && hold !== (state.total & 0xffffffff)) {
+            strm.msg = 'incorrect length check';
+            state.mode = BAD$2;
+            break;
+          }
+          //=== INITBITS();
+          hold = 0;
+          bits = 0;
+          //===//
+          //Tracev((stderr, "inflate:   length matches trailer\n"));
+        }
+        state.mode = DONE$1;
+        /* falls through */
+      case DONE$1:
+        ret = Z_STREAM_END$1$1;
+        break inf_leave;
+      case BAD$2:
+        ret = Z_DATA_ERROR$1$1;
+        break inf_leave;
+      case MEM$1:
+        return Z_MEM_ERROR$1$1;
+      case SYNC$1:
+        /* falls through */
+      default:
+        return Z_STREAM_ERROR$1$1;
+    }
+  }
+
+  // inf_leave <- here is real place for "goto inf_leave", emulated via "break inf_leave"
+
+  /*
+     Return from inflate(), updating the total counts and the check value.
+     If there was no progress during the inflate() call, return a buffer
+     error.  Call updatewindow() to create and/or update the window state.
+     Note: a memory error from inflate() is non-recoverable.
+   */
+
+  //--- RESTORE() ---
+  strm.next_out = put;
+  strm.avail_out = left;
+  strm.next_in = next;
+  strm.avail_in = have;
+  state.hold = hold;
+  state.bits = bits;
+  //---
+
+  if (state.wsize || (_out !== strm.avail_out && state.mode < BAD$2 &&
+                      (state.mode < CHECK$1 || flush !== Z_FINISH$1$1))) {
+    if (updatewindow$1(strm, strm.output, strm.next_out, _out - strm.avail_out)) ;
+  }
+  _in -= strm.avail_in;
+  _out -= strm.avail_out;
+  strm.total_in += _in;
+  strm.total_out += _out;
+  state.total += _out;
+  if ((state.wrap & 4) && _out) {
+    strm.adler = state.check = /*UPDATE_CHECK(state.check, strm.next_out - _out, _out);*/
+      (state.flags ? crc32_1$1(state.check, output, _out, strm.next_out - _out) : adler32_1$1(state.check, output, _out, strm.next_out - _out));
+  }
+  strm.data_type = state.bits + (state.last ? 64 : 0) +
+                    (state.mode === TYPE$2 ? 128 : 0) +
+                    (state.mode === LEN_$1 || state.mode === COPY_$1 ? 256 : 0);
+  if (((_in === 0 && _out === 0) || flush === Z_FINISH$1$1) && ret === Z_OK$1$1) {
+    ret = Z_BUF_ERROR$2;
+  }
+  return ret;
+};
+
+
+const inflateEnd$1 = (strm) => {
+
+  if (inflateStateCheck(strm)) {
+    return Z_STREAM_ERROR$1$1;
+  }
+
+  let state = strm.state;
+  if (state.window) {
+    state.window = null;
+  }
+  strm.state = null;
+  return Z_OK$1$1;
+};
+
+
+const inflateGetHeader$1 = (strm, head) => {
+
+  /* check state */
+  if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1$1; }
+  const state = strm.state;
+  if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR$1$1; }
+
+  /* save header structure */
+  state.head = head;
+  head.done = false;
+  return Z_OK$1$1;
+};
+
+
+const inflateSetDictionary$1 = (strm, dictionary) => {
+  const dictLength = dictionary.length;
+
+  let state;
+  let dictid;
+  let ret;
+
+  /* check state */
+  if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1$1; }
+  state = strm.state;
+
+  if (state.wrap !== 0 && state.mode !== DICT$1) {
+    return Z_STREAM_ERROR$1$1;
+  }
+
+  /* check for correct dictionary identifier */
+  if (state.mode === DICT$1) {
+    dictid = 1; /* adler32(0, null, 0)*/
+    /* dictid = adler32(dictid, dictionary, dictLength); */
+    dictid = adler32_1$1(dictid, dictionary, dictLength, 0);
+    if (dictid !== state.check) {
+      return Z_DATA_ERROR$1$1;
+    }
+  }
+  /* copy dictionary to window using updatewindow(), which will amend the
+   existing dictionary if appropriate */
+  ret = updatewindow$1(strm, dictionary, dictLength, dictLength);
+  if (ret) {
+    state.mode = MEM$1;
+    return Z_MEM_ERROR$1$1;
+  }
+  state.havedict = 1;
+  // Tracev((stderr, "inflate:   dictionary set\n"));
+  return Z_OK$1$1;
+};
+
+
+var inflateReset_1$1 = inflateReset$1;
+var inflateReset2_1$1 = inflateReset2$1;
+var inflateResetKeep_1$1 = inflateResetKeep$1;
+var inflateInit_1$1 = inflateInit$1;
+var inflateInit2_1$1 = inflateInit2$1;
+var inflate_2$1$1 = inflate$2$1;
+var inflateEnd_1$1 = inflateEnd$1;
+var inflateGetHeader_1$1 = inflateGetHeader$1;
+var inflateSetDictionary_1$1 = inflateSetDictionary$1;
+var inflateInfo$1 = 'pako inflate (from Nodeca project)';
+
+/* Not implemented
+module.exports.inflateCodesUsed = inflateCodesUsed;
+module.exports.inflateCopy = inflateCopy;
+module.exports.inflateGetDictionary = inflateGetDictionary;
+module.exports.inflateMark = inflateMark;
+module.exports.inflatePrime = inflatePrime;
+module.exports.inflateSync = inflateSync;
+module.exports.inflateSyncPoint = inflateSyncPoint;
+module.exports.inflateUndermine = inflateUndermine;
+module.exports.inflateValidate = inflateValidate;
+*/
+
+var inflate_1$2$1 = {
+	inflateReset: inflateReset_1$1,
+	inflateReset2: inflateReset2_1$1,
+	inflateResetKeep: inflateResetKeep_1$1,
+	inflateInit: inflateInit_1$1,
+	inflateInit2: inflateInit2_1$1,
+	inflate: inflate_2$1$1,
+	inflateEnd: inflateEnd_1$1,
+	inflateGetHeader: inflateGetHeader_1$1,
+	inflateSetDictionary: inflateSetDictionary_1$1,
+	inflateInfo: inflateInfo$1
+};
+
+// (C) 1995-2013 Jean-loup Gailly and Mark Adler
+// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+//
+// This software is provided 'as-is', without any express or implied
+// warranty. In no event will the authors be held liable for any damages
+// arising from the use of this software.
+//
+// Permission is granted to anyone to use this software for any purpose,
+// including commercial applications, and to alter it and redistribute it
+// freely, subject to the following restrictions:
+//
+// 1. The origin of this software must not be misrepresented; you must not
+//   claim that you wrote the original software. If you use this software
+//   in a product, an acknowledgment in the product documentation would be
+//   appreciated but is not required.
+// 2. Altered source versions must be plainly marked as such, and must not be
+//   misrepresented as being the original software.
+// 3. This notice may not be removed or altered from any source distribution.
+
+function GZheader$1() {
+  /* true if compressed data believed to be text */
+  this.text       = 0;
+  /* modification time */
+  this.time       = 0;
+  /* extra flags (not used when writing a gzip file) */
+  this.xflags     = 0;
+  /* operating system */
+  this.os         = 0;
+  /* pointer to extra field or Z_NULL if none */
+  this.extra      = null;
+  /* extra field length (valid if extra != Z_NULL) */
+  this.extra_len  = 0; // Actually, we don't need it in JS,
+                       // but leave for few code modifications
+
+  //
+  // Setup limits is not necessary because in js we should not preallocate memory
+  // for inflate use constant limit in 65536 bytes
+  //
+
+  /* space at extra (only when reading header) */
+  // this.extra_max  = 0;
+  /* pointer to zero-terminated file name or Z_NULL */
+  this.name       = '';
+  /* space at name (only when reading header) */
+  // this.name_max   = 0;
+  /* pointer to zero-terminated comment or Z_NULL */
+  this.comment    = '';
+  /* space at comment (only when reading header) */
+  // this.comm_max   = 0;
+  /* true if there was or will be a header crc */
+  this.hcrc       = 0;
+  /* true when done reading gzip header (not used when writing a gzip file) */
+  this.done       = false;
+}
+
+var gzheader$1 = GZheader$1;
+
+const toString$2 = Object.prototype.toString;
+
+/* Public constants ==========================================================*/
+/* ===========================================================================*/
+
+const {
+  Z_NO_FLUSH: Z_NO_FLUSH$3, Z_FINISH: Z_FINISH$4,
+  Z_OK: Z_OK$4, Z_STREAM_END: Z_STREAM_END$4, Z_NEED_DICT: Z_NEED_DICT$2, Z_STREAM_ERROR: Z_STREAM_ERROR$3, Z_DATA_ERROR: Z_DATA_ERROR$3, Z_MEM_ERROR: Z_MEM_ERROR$2
+} = constants$2$1;
+
+/* ===========================================================================*/
+
+
+/**
+ * class Inflate
+ *
+ * Generic JS-style wrapper for zlib calls. If you don't need
+ * streaming behaviour - use more simple functions: [[inflate]]
+ * and [[inflateRaw]].
+ **/
+
+/* internal
+ * inflate.chunks -> Array
+ *
+ * Chunks of output data, if [[Inflate#onData]] not overridden.
+ **/
+
+/**
+ * Inflate.result -> Uint8Array|String
+ *
+ * Uncompressed result, generated by default [[Inflate#onData]]
+ * and [[Inflate#onEnd]] handlers. Filled after you push last chunk
+ * (call [[Inflate#push]] with `Z_FINISH` / `true` param).
+ **/
+
+/**
+ * Inflate.err -> Number
+ *
+ * Error code after inflate finished. 0 (Z_OK) on success.
+ * Should be checked if broken data possible.
+ **/
+
+/**
+ * Inflate.msg -> String
+ *
+ * Error message, if [[Inflate.err]] != 0
+ **/
+
+
+/**
+ * new Inflate(options)
+ * - options (Object): zlib inflate options.
+ *
+ * Creates new inflator instance with specified params. Throws exception
+ * on bad params. Supported options:
+ *
+ * - `windowBits`
+ * - `dictionary`
+ *
+ * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
+ * for more information on these.
+ *
+ * Additional options, for internal needs:
+ *
+ * - `chunkSize` - size of generated data chunks (16K by default)
+ * - `raw` (Boolean) - do raw inflate
+ * - `to` (String) - if equal to 'string', then result will be converted
+ *   from utf8 to utf16 (javascript) string. When string output requested,
+ *   chunk length can differ from `chunkSize`, depending on content.
+ *
+ * By default, when no options set, autodetect deflate/gzip data format via
+ * wrapper header.
+ *
+ * ##### Example:
+ *
+ * ```javascript
+ * const pako = require('pako')
+ * const chunk1 = new Uint8Array([1,2,3,4,5,6,7,8,9])
+ * const chunk2 = new Uint8Array([10,11,12,13,14,15,16,17,18,19]);
+ *
+ * const inflate = new pako.Inflate({ level: 3});
+ *
+ * inflate.push(chunk1, false);
+ * inflate.push(chunk2, true);  // true -> last chunk
+ *
+ * if (inflate.err) { throw new Error(inflate.err); }
+ *
+ * console.log(inflate.result);
+ * ```
+ **/
+function Inflate$1$1(options) {
+  this.options = common$1.assign({
+    chunkSize: 1024 * 64,
+    windowBits: 15,
+    to: ''
+  }, options || {});
+
+  const opt = this.options;
+
+  // Force window size for `raw` data, if not set directly,
+  // because we have no header for autodetect.
+  if (opt.raw && (opt.windowBits >= 0) && (opt.windowBits < 16)) {
+    opt.windowBits = -opt.windowBits;
+    if (opt.windowBits === 0) { opt.windowBits = -15; }
+  }
+
+  // If `windowBits` not defined (and mode not raw) - set autodetect flag for gzip/deflate
+  if ((opt.windowBits >= 0) && (opt.windowBits < 16) &&
+      !(options && options.windowBits)) {
+    opt.windowBits += 32;
+  }
+
+  // Gzip header has no info about windows size, we can do autodetect only
+  // for deflate. So, if window size not set, force it to max when gzip possible
+  if ((opt.windowBits > 15) && (opt.windowBits < 48)) {
+    // bit 3 (16) -> gzipped data
+    // bit 4 (32) -> autodetect gzip/deflate
+    if ((opt.windowBits & 15) === 0) {
+      opt.windowBits |= 15;
+    }
+  }
+
+  this.err    = 0;      // error code, if happens (0 = Z_OK)
+  this.msg    = '';     // error message
+  this.ended  = false;  // used to avoid multiple onEnd() calls
+  this.chunks = [];     // chunks of compressed data
+
+  this.strm   = new zstream$1();
+  this.strm.avail_out = 0;
+
+  let status  = inflate_1$2$1.inflateInit2(
+    this.strm,
+    opt.windowBits
+  );
+
+  if (status !== Z_OK$4) {
+    throw new Error(messages$1[status]);
+  }
+
+  this.header = new gzheader$1();
+
+  inflate_1$2$1.inflateGetHeader(this.strm, this.header);
+
+  // Setup dictionary
+  if (opt.dictionary) {
+    // Convert data if needed
+    if (typeof opt.dictionary === 'string') {
+      opt.dictionary = strings$1.string2buf(opt.dictionary);
+    } else if (toString$2.call(opt.dictionary) === '[object ArrayBuffer]') {
+      opt.dictionary = new Uint8Array(opt.dictionary);
+    }
+    if (opt.raw) { //In raw mode we need to set the dictionary early
+      status = inflate_1$2$1.inflateSetDictionary(this.strm, opt.dictionary);
+      if (status !== Z_OK$4) {
+        throw new Error(messages$1[status]);
+      }
+    }
+  }
+}
+
+/**
+ * Inflate#push(data[, flush_mode]) -> Boolean
+ * - data (Uint8Array|ArrayBuffer): input data
+ * - flush_mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE
+ *   flush modes. See constants. Skipped or `false` means Z_NO_FLUSH,
+ *   `true` means Z_FINISH.
+ *
+ * Sends input data to inflate pipe, generating [[Inflate#onData]] calls with
+ * new output chunks. Returns `true` on success. If end of stream detected,
+ * [[Inflate#onEnd]] will be called.
+ *
+ * `flush_mode` is not needed for normal operation, because end of stream
+ * detected automatically. You may try to use it for advanced things, but
+ * this functionality was not tested.
+ *
+ * On fail call [[Inflate#onEnd]] with error code and return false.
+ *
+ * ##### Example
+ *
+ * ```javascript
+ * push(chunk, false); // push one of data chunks
+ * ...
+ * push(chunk, true);  // push last chunk
+ * ```
+ **/
+Inflate$1$1.prototype.push = function (data, flush_mode) {
+  const strm = this.strm;
+  const chunkSize = this.options.chunkSize;
+  const dictionary = this.options.dictionary;
+  let status, _flush_mode, last_avail_out;
+
+  if (this.ended) return false;
+
+  if (flush_mode === ~~flush_mode) _flush_mode = flush_mode;
+  else _flush_mode = flush_mode === true ? Z_FINISH$4 : Z_NO_FLUSH$3;
+
+  // Convert data if needed
+  if (toString$2.call(data) === '[object ArrayBuffer]') {
+    strm.input = new Uint8Array(data);
+  } else {
+    strm.input = data;
+  }
+
+  strm.next_in = 0;
+  strm.avail_in = strm.input.length;
+
+  for (;;) {
+    if (strm.avail_out === 0) {
+      strm.output = new Uint8Array(chunkSize);
+      strm.next_out = 0;
+      strm.avail_out = chunkSize;
+    }
+
+    status = inflate_1$2$1.inflate(strm, _flush_mode);
+
+    if (status === Z_NEED_DICT$2 && dictionary) {
+      status = inflate_1$2$1.inflateSetDictionary(strm, dictionary);
+
+      if (status === Z_OK$4) {
+        status = inflate_1$2$1.inflate(strm, _flush_mode);
+      } else if (status === Z_DATA_ERROR$3) {
+        // Replace code with more verbose
+        status = Z_NEED_DICT$2;
+      }
+    }
+
+    // Skip snyc markers if more data follows and not raw mode
+    while (strm.avail_in > 0 &&
+           status === Z_STREAM_END$4 &&
+           strm.state.wrap > 0 &&
+           data[strm.next_in] !== 0)
+    {
+      inflate_1$2$1.inflateReset(strm);
+      status = inflate_1$2$1.inflate(strm, _flush_mode);
+    }
+
+    switch (status) {
+      case Z_STREAM_ERROR$3:
+      case Z_DATA_ERROR$3:
+      case Z_NEED_DICT$2:
+      case Z_MEM_ERROR$2:
+        this.onEnd(status);
+        this.ended = true;
+        return false;
+    }
+
+    // Remember real `avail_out` value, because we may patch out buffer content
+    // to align utf8 strings boundaries.
+    last_avail_out = strm.avail_out;
+
+    if (strm.next_out) {
+      if (strm.avail_out === 0 || status === Z_STREAM_END$4) {
+
+        if (this.options.to === 'string') {
+
+          let next_out_utf8 = strings$1.utf8border(strm.output, strm.next_out);
+
+          let tail = strm.next_out - next_out_utf8;
+          let utf8str = strings$1.buf2string(strm.output, next_out_utf8);
+
+          // move tail & realign counters
+          strm.next_out = tail;
+          strm.avail_out = chunkSize - tail;
+          if (tail) strm.output.set(strm.output.subarray(next_out_utf8, next_out_utf8 + tail), 0);
+
+          this.onData(utf8str);
+
+        } else {
+          this.onData(strm.output.length === strm.next_out ? strm.output : strm.output.subarray(0, strm.next_out));
+        }
+      }
+    }
+
+    // Must repeat iteration if out buffer is full
+    if (status === Z_OK$4 && last_avail_out === 0) continue;
+
+    // Finalize if end of stream reached.
+    if (status === Z_STREAM_END$4) {
+      status = inflate_1$2$1.inflateEnd(this.strm);
+      this.onEnd(status);
+      this.ended = true;
+      return true;
+    }
+
+    if (strm.avail_in === 0) break;
+  }
+
+  return true;
+};
+
+
+/**
+ * Inflate#onData(chunk) -> Void
+ * - chunk (Uint8Array|String): output data. When string output requested,
+ *   each chunk will be string.
+ *
+ * By default, stores data blocks in `chunks[]` property and glue
+ * those in `onEnd`. Override this handler, if you need another behaviour.
+ **/
+Inflate$1$1.prototype.onData = function (chunk) {
+  this.chunks.push(chunk);
+};
+
+
+/**
+ * Inflate#onEnd(status) -> Void
+ * - status (Number): inflate status. 0 (Z_OK) on success,
+ *   other if not.
+ *
+ * Called either after you tell inflate that the input stream is
+ * complete (Z_FINISH). By default - join collected chunks,
+ * free memory and fill `results` / `err` properties.
+ **/
+Inflate$1$1.prototype.onEnd = function (status) {
+  // On success - join
+  if (status === Z_OK$4) {
+    if (this.options.to === 'string') {
+      this.result = this.chunks.join('');
+    } else {
+      this.result = common$1.flattenChunks(this.chunks);
+    }
+  }
+  this.chunks = [];
+  this.err = status;
+  this.msg = this.strm.msg;
+};
+
+
+/**
+ * inflate(data[, options]) -> Uint8Array|String
+ * - data (Uint8Array|ArrayBuffer): input data to decompress.
+ * - options (Object): zlib inflate options.
+ *
+ * Decompress `data` with inflate/ungzip and `options`. Autodetect
+ * format via wrapper header by default. That's why we don't provide
+ * separate `ungzip` method.
+ *
+ * Supported options are:
+ *
+ * - windowBits
+ *
+ * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
+ * for more information.
+ *
+ * Sugar (options):
+ *
+ * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify
+ *   negative windowBits implicitly.
+ * - `to` (String) - if equal to 'string', then result will be converted
+ *   from utf8 to utf16 (javascript) string. When string output requested,
+ *   chunk length can differ from `chunkSize`, depending on content.
+ *
+ *
+ * ##### Example:
+ *
+ * ```javascript
+ * const pako = require('pako');
+ * const input = pako.deflate(new Uint8Array([1,2,3,4,5,6,7,8,9]));
+ * let output;
+ *
+ * try {
+ *   output = pako.inflate(input);
+ * } catch (err) {
+ *   console.log(err);
+ * }
+ * ```
+ **/
+function inflate$1$1(input, options) {
+  const inflator = new Inflate$1$1(options);
+
+  inflator.push(input);
+
+  // That will never happens, if you don't cheat with options :)
+  if (inflator.err) throw inflator.msg || messages$1[inflator.err];
+
+  return inflator.result;
+}
+
+
+/**
+ * inflateRaw(data[, options]) -> Uint8Array|String
+ * - data (Uint8Array|ArrayBuffer): input data to decompress.
+ * - options (Object): zlib inflate options.
+ *
+ * The same as [[inflate]], but creates raw data, without wrapper
+ * (header and adler32 crc).
+ **/
+function inflateRaw$1$1(input, options) {
+  options = options || {};
+  options.raw = true;
+  return inflate$1$1(input, options);
+}
+
+
+/**
+ * ungzip(data[, options]) -> Uint8Array|String
+ * - data (Uint8Array|ArrayBuffer): input data to decompress.
+ * - options (Object): zlib inflate options.
+ *
+ * Just shortcut to [[inflate]], because it autodetects format
+ * by header.content. Done for convenience.
+ **/
+
+
+var Inflate_1$1$1 = Inflate$1$1;
+var inflate_2$2 = inflate$1$1;
+var inflateRaw_1$1$1 = inflateRaw$1$1;
+var ungzip$1$1 = inflate$1$1;
+var constants$3 = constants$2$1;
+
+var inflate_1$1$1 = {
+	Inflate: Inflate_1$1$1,
+	inflate: inflate_2$2,
+	inflateRaw: inflateRaw_1$1$1,
+	ungzip: ungzip$1$1,
+	constants: constants$3
+};
+
+const { Deflate, deflate, deflateRaw, gzip } = deflate_1$1;
+
+const { Inflate: Inflate$2, inflate: inflate$3, inflateRaw: inflateRaw$2, ungzip: ungzip$2 } = inflate_1$1$1;
+var deflateRaw_1 = deflateRaw;
+var inflate_1$3 = inflate$3;
+var inflateRaw_1 = inflateRaw$2;
+var ungzip_1$1 = ungzip$2;
+
+const FEXTRA = 4;  // gzip spec F.EXTRA flag
+
+function isgzipped(data) {
+    const b = ArrayBuffer.isView(data) ? data : new Uint8Array(data);
+    return b[0] ===31 && b[1] === 139;
+}
+
+/**
+ * Pako does not properly ungzip block compressed files if > 1 block is present.  Test for bgzip and use wrapper.
+ */
+function ungzip_blocks(data) {
+    const ba = ArrayBuffer.isView(data) ? data : new Uint8Array(data);
+    const b = ba[3] & FEXTRA;
+    if (b !== 0 && ba[12] === 66 && ba[13] === 67) {
+        return unbgzf(ba.buffer);
+    } else {
+        return ungzip_1$1(ba);
+    }
+}
+
+// Uncompress data,  assumed to be series of bgzipped blocks
+function unbgzf(data, lim) {
+
+    const oBlockList = [];
+    let ptr = 0;
+    let totalSize = 0;
+
+    lim = lim || data.byteLength - 18;
+
+    while (ptr < lim) {
+        try {
+            const ba = ArrayBuffer.isView(data) ? data : new Uint8Array(data, ptr, 18);
+            const xlen = (ba[11] << 8) | (ba[10]);
+            const flg = ba[3];
+            const fextra = flg & FEXTRA;
+            const si1 = ba[12];
+            const si2 = ba[13];
+            const slen = (ba[15] << 8) | (ba[14]);
+            const bsize = ((ba[17] << 8) | (ba[16])) + 1;
+            const start = 12 + xlen + ptr;    // Start of CDATA
+            const bytesLeft = data.byteLength - start;
+            const cDataSize = bsize - xlen - 19;
+            if (bytesLeft < cDataSize || cDataSize <= 0) break;
+
+            const a = new Uint8Array(data, start, cDataSize);
+            const unc = inflateRaw_1(a);
+
+            // const inflate = new Zlib.RawInflate(a);
+            // const unc = inflate.decompress();
+
+            ptr += (cDataSize - 1) + 26; //inflate.ip + 26
+            totalSize += unc.byteLength;
+            oBlockList.push(unc);
+        } catch (e) {
+            console.error(e);
+            break;
+        }
+    }
+
+    // Concatenate decompressed blocks
+    if (oBlockList.length === 1) {
+        return oBlockList[0];
+    } else {
+        const out = new Uint8Array(totalSize);
+        let cursor = 0;
+        for (let i = 0; i < oBlockList.length; ++i) {
+            var b = new Uint8Array(oBlockList[i]);
+            arrayCopy(b, 0, out, cursor, b.length);
+            cursor += b.length;
+        }
+        return out;
+    }
+}
+
+function bgzBlockSize$1(data) {
+    const ba = ArrayBuffer.isView(data) ? data : new Uint8Array(data);
+    const bsize = (ba[17] << 8 | ba[16]) + 1;
+    return bsize;
+}
+
+// From Thomas Down's zlib implementation
+
+const testArray = new Uint8Array(1);
+const hasSubarray = (typeof testArray.subarray === 'function');
+
+function arrayCopy(src, srcOffset, dest, destOffset, count) {
+    if (count === 0) {
+        return;
+    }
+    if (!src) {
+        throw "Undef src";
+    } else if (!dest) {
+        throw "Undef dest";
+    }
+    if (srcOffset === 0 && count === src.length) {
+        arrayCopy_fast(src, dest, destOffset);
+    } else if (hasSubarray) {
+        arrayCopy_fast(src.subarray(srcOffset, srcOffset + count), dest, destOffset);
+    } else if (src.BYTES_PER_ELEMENT === 1 && count > 100) {
+        arrayCopy_fast(new Uint8Array(src.buffer, src.byteOffset + srcOffset, count), dest, destOffset);
+    } else {
+        arrayCopy_slow(src, srcOffset, dest, destOffset, count);
+    }
+}
+
+function arrayCopy_slow(src, srcOffset, dest, destOffset, count) {
+    for (let i = 0; i < count; ++i) {
+        dest[destOffset + i] = src[srcOffset + i];
+    }
+}
+
+function arrayCopy_fast(src, dest, destOffset) {
+    dest.set(src, destOffset);
+}
+
+
+/**
+ * Compress string and encode in a url safe form
+ * @param s
+ */
+function compressString(str) {
+
+    const bytes = new Uint8Array(str.length);
+    for (var i = 0; i < str.length; i++) {
+        bytes[i] = str.charCodeAt(i);
+    }
+    const compressedBytes = new deflateRaw_1(bytes);            // UInt8Arry
+    const compressedString = String.fromCharCode.apply(null, compressedBytes);      // Convert to string
+    let enc = btoa(compressedString);
+    return enc.replace(/\+/g, '.').replace(/\//g, '_').replace(/=/g, '-');   // URL safe
+}
+
+/**
+ * Uncompress the url-safe encoded compressed string, presumably created by compressString above
+ *
+ * @param enc
+ * @returns {string}
+ */
+function uncompressString(enc) {
+
+    enc = enc.replace(/\./g, '+').replace(/_/g, '/').replace(/-/g, '=');
+
+    const compressedString = atob(enc);
+    const compressedBytes = [];
+    for (let i = 0; i < compressedString.length; i++) {
+        compressedBytes.push(compressedString.charCodeAt(i));
+    }
+    //const bytes = new Zlib.RawInflate(compressedBytes).decompress();
+    const bytes = inflateRaw_1(compressedBytes);
+
+    let str = '';
+    for (let b of bytes) {
+        str += String.fromCharCode(b);
+    }
+    return str;
+}
+
+
+/**
+ * @param dataURI
+ * @returns {Array<number>|Uint8Array}
+ */
+function decodeDataURI$1(dataURI, gzip) {
+
+    const split = dataURI.split(',');
+    const info = split[0].split(':')[1];
+    let dataString = split[1];
+
+    if (info.indexOf('base64') >= 0) {
+        dataString = atob(dataString);
+
+        const bytes = new Uint8Array(dataString.length);
+        for (let i = 0; i < dataString.length; i++) {
+            bytes[i] = dataString.charCodeAt(i);
+        }
+
+        let plain;
+        if (gzip || info.indexOf('gzip') > 0) {
+            plain = ungzip_1$1(bytes);
+        } else {
+            plain = bytes;
+        }
+        return plain
+    } else {
+        return decodeURIComponent(dataString);      // URL encoded string -- not currently used or tested
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2017 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+const IGVMath = {
+
+    lerp: (v0, v1, t) => {
+        return (1 - t) * v0 + t * v1;
+    },
+
+    mean: function (array) {
+
+        var t = 0, n = 0,
+            i;
+        for (i = 0; i < array.length; i++) {
+            if (!isNaN(array[i])) {
+                t += array[i];
+                n++;
+            }
+        }
+        return n > 0 ? t / n : 0;
+    },
+
+    meanAndStdev: function (array) {
+
+        var v, t = 0, t2 = 0, n = 0, i;
+
+        for (i = 0; i < array.length; i++) {
+
+            v = array[i];
+
+            if (!isNaN(v)) {
+                t += v;
+                t2 += v * v;
+                n++;
+            }
+        }
+        return n > 0 ? {mean: t / n, stdev: Math.sqrt(t2 - t * t / n)} : {mean: 0, stdev: 0};
+    },
+
+    median: function (numbers) {
+        // median of [3, 5, 4, 4, 1, 1, 2, 3] = 3
+        var median = 0, numsLen = numbers.length;
+        numbers.sort();
+
+        if (
+            numsLen % 2 === 0 // is even
+        ) {
+            // average of two middle numbers
+            median = (numbers[numsLen / 2 - 1] + numbers[numsLen / 2]) / 2;
+        } else { // is odd
+            // middle number only
+            median = numbers[(numsLen - 1) / 2];
+        }
+
+        return median;
+    },
+
+    // Fast percentile function for "p" near edges.  This needs profiled for p in middle (e.g. median)
+    percentile: function (array, p) {
+
+        if (array.length === 0) return undefined;
+
+        var k = Math.floor(array.length * ((100 - p) / 100));
+        if (k === 0) {
+            array.sort(function (a, b) {
+                return b - a
+            });
+            return array[k];
+        } else {
+            return selectElement(array, k);
+        }
+
+    },
+
+
+    clamp: function (value, min, max) {
+        return Math.min(Math.max(value, min), max);
+    },
+
+    log2: function (x) {
+        return Math.log(x) / Math.LN2;
+    }
+
+};
+
+function selectElement(array, k) {
+
+    // Credit Steve Hanov http://stevehanov.ca/blog/index.php?id=122
+    var heap = new BinaryHeap(),
+        i;
+
+    for (i = 0; i < array.length; i++) {
+
+        var item = array[i];
+
+        // If we have not yet found k items, or the current item is larger than
+        // the smallest item on the heap, add current item
+        if (heap.content.length < k || item > heap.content[0]) {
+            // If the heap is full, remove the smallest element on the heap.
+            if (heap.content.length === k) {
+                heap.pop();
+            }
+            heap.push(item);
+        }
+    }
+
+    return heap.content[0];
+}
+
+
+function BinaryHeap() {
+    this.content = [];
+}
+
+BinaryHeap.prototype = {
+    push: function (element) {
+        // Add the new element to the end of the array.
+        this.content.push(element);
+        // Allow it to bubble up.
+        this.bubbleUp(this.content.length - 1);
+    },
+
+    pop: function () {
+        // Store the first element so we can return it later.
+        var result = this.content[0];
+        // Get the element at the end of the array.
+        var end = this.content.pop();
+        // If there are any elements left, put the end element at the
+        // start, and let it sink down.
+        if (this.content.length > 0) {
+            this.content[0] = end;
+            this.sinkDown(0);
+        }
+        return result;
+    },
+
+    remove: function (node) {
+        var length = this.content.length;
+        // To remove a value, we must search through the array to find
+        // it.
+        for (var i = 0; i < length; i++) {
+            if (this.content[i] !== node) continue;
+            // When it is found, the process seen in 'pop' is repeated
+            // to fill up the hole.
+            var end = this.content.pop();
+            // If the element we popped was the one we needed to remove,
+            // we're done.
+            if (i === length - 1) break;
+            // Otherwise, we replace the removed element with the popped
+            // one, and allow it to float up or sink down as appropriate.
+            this.content[i] = end;
+            this.bubbleUp(i);
+            this.sinkDown(i);
+            break;
+        }
+    },
+
+    size: function () {
+        return this.content.length;
+    },
+
+    bubbleUp: function (n) {
+        // Fetch the element that has to be moved.
+        var element = this.content[n], score = element;
+        // When at 0, an element can not go up any further.
+        while (n > 0) {
+            // Compute the parent element's index, and fetch it.
+            var parentN = Math.floor((n + 1) / 2) - 1,
+                parent = this.content[parentN];
+            // If the parent has a lesser score, things are in order and we
+            // are done.
+            if (score >= parent)
+                break;
+
+            // Otherwise, swap the parent with the current element and
+            // continue.
+            this.content[parentN] = element;
+            this.content[n] = parent;
+            n = parentN;
+        }
+    },
+
+    sinkDown: function (n) {
+        // Look up the target element and its score.
+        var length = this.content.length,
+            element = this.content[n],
+            elemScore = element;
+
+        while (true) {
+            // Compute the indices of the child elements.
+            var child2N = (n + 1) * 2, child1N = child2N - 1;
+            // This is used to store the new position of the element,
+            // if any.
+            var swap = null;
+            // If the first child exists (is inside the array)...
+            if (child1N < length) {
+                // Look it up and compute its score.
+                var child1 = this.content[child1N],
+                    child1Score = child1;
+                // If the score is less than our element's, we need to swap.
+                if (child1Score < elemScore)
+                    swap = child1N;
+            }
+            // Do the same checks for the other child.
+            if (child2N < length) {
+                var child2 = this.content[child2N],
+                    child2Score = child2;
+                if (child2Score < (swap == null ? elemScore : child1Score))
+                    swap = child2N;
+            }
+
+            // No need to swap further, we are done.
+            if (swap == null) break;
+
+            // Otherwise, swap and continue.
+            this.content[n] = this.content[swap];
+            this.content[swap] = element;
+            n = swap;
+        }
+    }
+};
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+function _random(min, max) {
+    return Math.random() * (max - min) + min;
+}
+
+const IGVColor = {
+
+    rgbListFromHSV: () => {
+
+        let s = 1;
+        let accumulation = [];
+        for (let v = 1; v >= 0.5; v -= .1) {
+            for (let h = 0; h < 1; h += 1 / 28) {
+                const r = "rgb(" + IGVColor.hsvToRgb(h, s, v).join(",") + ")";
+                accumulation.push(r);
+            }
+        }
+
+        // add black
+        accumulation.pop();
+        accumulation.push(IGVColor.rgbColor(16, 16, 16));
+
+        return accumulation;
+    },
+
+    rgbToHex: function (rgb) {
+        rgb = rgb.match(/^rgba?[\s+]?\([\s+]?(\d+)[\s+]?,[\s+]?(\d+)[\s+]?,[\s+]?(\d+)[\s+]?/i);
+        return (rgb && rgb.length === 4) ? "#" +
+            ("0" + parseInt(rgb[1], 10).toString(16)).slice(-2) +
+            ("0" + parseInt(rgb[2], 10).toString(16)).slice(-2) +
+            ("0" + parseInt(rgb[3], 10).toString(16)).slice(-2) : '';
+    },
+
+    hexToRgb: function (hex) {
+
+        var cooked = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
+
+        if (null === cooked) {
+            return undefined;
+        }
+
+        return "rgb(" + parseInt(cooked[1], 16) + "," + parseInt(cooked[2], 16) + "," + parseInt(cooked[3], 16) + ")";
+    },
+
+    /**
+     * Converts an HSV color value to RGB. Conversion formula
+     * adapted from http://en.wikipedia.org/wiki/HSV_color_space.
+     * Assumes h, s, and v are contained in the set [0, 1] and
+     * returns r, g, and b in the set [0, 255].
+     *
+     * Credit: https://gist.githubusercontent.com/mjackson/5311256
+     *
+     * @param   h       The hue
+     * @param   s       The saturation
+     * @param   v       The value
+     * @return  Array   The RGB representation
+     */
+    hsvToRgb: function (h, s, v) {
+        var r, g, b;
+
+        var i = Math.floor(h * 6);
+        var f = h * 6 - i;
+        var p = v * (1 - s);
+        var q = v * (1 - f * s);
+        var t = v * (1 - (1 - f) * s);
+
+        switch (i % 6) {
+            case 0:
+                r = v, g = t, b = p;
+                break;
+            case 1:
+                r = q, g = v, b = p;
+                break;
+            case 2:
+                r = p, g = v, b = t;
+                break;
+            case 3:
+                r = p, g = q, b = v;
+                break;
+            case 4:
+                r = t, g = p, b = v;
+                break;
+            case 5:
+                r = v, g = p, b = q;
+                break;
+        }
+
+        return [Math.floor(r * 255), Math.floor(g * 255), Math.floor(b * 255)];
+    },
+
+    /**
+     * Converts an HSL color value to RGB. Conversion formula
+     * adapted from http://en.wikipedia.org/wiki/HSL_color_space.
+     * Assumes h, s, and l are contained in the set [0, 1] and
+     * returns r, g, and b in the set [0, 255].
+     *
+     * Credit: https://gist.githubusercontent.com/mjackson/5311256
+     *
+     * @param   h       The hue
+     * @param   s       The saturation
+     * @param   l       The lightness
+     * @return  Array   The RGB representation
+     */
+    hslToRgb: function (h, s, l) {
+        var r, g, b;
+
+        if (s === 0) {
+            r = g = b = l; // achromatic
+        } else {
+
+
+            var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
+            var p = 2 * l - q;
+
+            r = IGVColor.hue2rgb(p, q, h + 1 / 3);
+            g = IGVColor.hue2rgb(p, q, h);
+            b = IGVColor.hue2rgb(p, q, h - 1 / 3);
+        }
+
+        return [r * 255, g * 255, b * 255];
+    },
+
+    hue2rgb: (p, q, t) => {
+        if (t < 0) t += 1;
+        if (t > 1) t -= 1;
+        if (t < 1 / 6) return p + (q - p) * 6 * t;
+        if (t < 1 / 2) return q;
+        if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;
+        return p;
+    },
+
+    rgbaColor: function (r, g, b, a) {
+
+        r = IGVMath.clamp(r, 0, 255);
+        g = IGVMath.clamp(g, 0, 255);
+        b = IGVMath.clamp(b, 0, 255);
+        a = IGVMath.clamp(a, 0.0, 1.0);
+
+        return "rgba(" + r + "," + g + "," + b + "," + a + ")";
+    },
+
+    rgbColor: function (r, g, b) {
+
+        r = IGVMath.clamp(r, 0, 255);
+        g = IGVMath.clamp(g, 0, 255);
+        b = IGVMath.clamp(b, 0, 255);
+
+        return "rgb(" + r + "," + g + "," + b + ")";
+    },
+
+    greyScale: function (value) {
+
+        var grey = IGVMath.clamp(value, 0, 255);
+
+        return "rgb(" + grey + "," + grey + "," + grey + ")";
+    },
+
+    randomGrey: function (min, max) {
+
+        min = IGVMath.clamp(min, 0, 255);
+        max = IGVMath.clamp(max, 0, 255);
+
+        var g = Math.round(_random(min, max)).toString(10);
+
+        return "rgb(" + g + "," + g + "," + g + ")";
+    },
+
+    randomRGB: function (min, max) {
+
+        min = IGVMath.clamp(min, 0, 255);
+        max = IGVMath.clamp(max, 0, 255);
+
+        var r = Math.round(_random(min, max)).toString(10);
+        var g = Math.round(_random(min, max)).toString(10);
+        var b = Math.round(_random(min, max)).toString(10);
+
+        return "rgb(" + r + "," + g + "," + b + ")";
+    },
+
+    randomRGBConstantAlpha: function (min, max, alpha) {
+
+        min = IGVMath.clamp(min, 0, 255);
+        max = IGVMath.clamp(max, 0, 255);
+
+        var r = Math.round(_random(min, max)).toString(10);
+        var g = Math.round(_random(min, max)).toString(10);
+        var b = Math.round(_random(min, max)).toString(10);
+
+        return "rgba(" + r + "," + g + "," + b + "," + alpha + ")";
+    },
+
+    addAlpha: function (color, alpha) {
+
+        if(color === "0" || color === ".") {
+            color = "rgb(0,0,0)";
+        } else {
+            const c = this.colorNameToHex(color);
+            if (c) {
+                color = c;
+            }
+        }
+
+        var isHex = /(^#[0-9A-F]{6}$)|(^#[0-9A-F]{3}$)/i.test(color);
+
+        if (color.startsWith("rgba")) {
+            const idx = color.lastIndexOf(",");
+            return color.substring(0, idx+1) + alpha.toString() + ")";
+        }
+
+        if (isHex) {
+            color = IGVColor.hexToRgb(color);
+        }
+
+        if (color.startsWith("rgb")) {
+            return color.replace("rgb", "rgba").replace(")", ", " + alpha + ")");
+        } else {
+            console.log(color + " is not an rgb style string");
+            return color;
+        }
+    },
+
+    rgbComponents: function (color) {
+
+        if(color === "0" || color === ".") {
+            return [0,0,0];
+        }
+        const isHex = /(^#[0-9A-F]{6}$)|(^#[0-9A-F]{3}$)/i.test(color);
+        if (isHex) {
+            color = IGVColor.hexToRgb(color);
+        } else {
+            if(!color.startsWith("rgb")) {
+                const hex = this.colorNameToHex(color);
+                color = this.hexToRgb(hex);
+            }
+        }
+
+        if (color.startsWith("rgb(")) {
+            return color.substring(4, color.length-1).split(",").map(s => Number.parseInt(s.trim()));
+         } else if (color.startsWith("rgba(")) {
+            return color.substring(5, color.length-1).split(",").map((s, i) => {
+                s = s.trim();
+                return i === 3 ? Number.parseFloat(s) : Number.parseInt(s)
+            });
+        }
+        else {
+            throw Error("Unrecognized color string: color");
+        }
+    },
+
+    /**
+     *
+     * @param dest  RGB components as an array
+     * @param src  RGB components as an array
+     * @param alpha   alpha transparancy in the range 0-1
+     * @returns {}
+     */
+    getCompositeColor: function (dest, src, alpha) {
+
+        var r = Math.floor(alpha * src[0] + (1 - alpha) * dest[0]),
+            g = Math.floor(alpha * src[1] + (1 - alpha) * dest[1]),
+            b = Math.floor(alpha * src[2] + (1 - alpha) * dest[2]);
+
+        return "rgb(" + r + "," + g + "," + b + ")";
+
+    },
+
+
+    createColorString: function (str) {
+        // Excel will quote color strings, strip all quotes
+        str = stripQuotes$1(str);
+
+        if (str.includes(",")) {
+            return str.startsWith("rgb") ? str : "rgb(" + str + ")";
+        } else {
+            return str;
+        }
+    },
+
+    darkenLighten: function (color, amt) {
+
+        let src;
+        let hexColor = this.colorNameToHex(color);
+        if(hexColor) {
+            src  = IGVColor.hexToRgb(hexColor);
+        } else {
+            src = color.startsWith('rgb(') ? color : IGVColor.hexToRgb(color);
+        }
+
+        const components = src.replace(")", "").substring(4).split(",");
+
+        const r = Math.max(0, Math.min(255, Number.parseInt(components[0].trim()) + amt));
+        const g = Math.max(0, Math.min(255, Number.parseInt(components[1].trim()) + amt));
+        const b = Math.max(0, Math.min(255, Number.parseInt(components[2].trim()) + amt));
+
+        return 'rgb(' + r.toString() + ',' + g.toString() + ',' + b.toString() + ')';
+
+    },
+
+    /**
+     * Convert html/css color name to hex value.  Adapted from https://gist.github.com/mxfh/4719348
+     * @param colorName
+     * @returns {*}
+     */
+    colorNameToHex: function (colorName) { // color list from http://stackoverflow.com/q/1573053/731179  with added gray/gray
+        const definedColorNames = {
+            "aliceblue": "#f0f8ff",
+            "antiquewhite": "#faebd7",
+            "aqua": "#00ffff",
+            "aquamarine": "#7fffd4",
+            "azure": "#f0ffff",
+            "beige": "#f5f5dc",
+            "bisque": "#ffe4c4",
+            "black": "#000000",
+            "blanchedalmond": "#ffebcd",
+            "blue": "#0000ff",
+            "blueviolet": "#8a2be2",
+            "brown": "#a52a2a",
+            "burlywood": "#deb887",
+            "cadetblue": "#5f9ea0",
+            "chartreuse": "#7fff00",
+            "chocolate": "#d2691e",
+            "coral": "#ff7f50",
+            "cornflowerblue": "#6495ed",
+            "cornsilk": "#fff8dc",
+            "crimson": "#dc143c",
+            "cyan": "#00ffff",
+            "darkblue": "#00008b",
+            "darkcyan": "#008b8b",
+            "darkgoldenrod": "#b8860b",
+            "darkgray": "#a9a9a9",
+            "darkgreen": "#006400",
+            "darkkhaki": "#bdb76b",
+            "darkmagenta": "#8b008b",
+            "darkolivegreen": "#556b2f",
+            "darkorange": "#ff8c00",
+            "darkorchid": "#9932cc",
+            "darkred": "#8b0000",
+            "darksalmon": "#e9967a",
+            "darkseagreen": "#8fbc8f",
+            "darkslateblue": "#483d8b",
+            "darkslategray": "#2f4f4f",
+            "darkturquoise": "#00ced1",
+            "darkviolet": "#9400d3",
+            "deeppink": "#ff1493",
+            "deepskyblue": "#00bfff",
+            "dimgray": "#696969",
+            "dodgerblue": "#1e90ff",
+            "firebrick": "#b22222",
+            "floralwhite": "#fffaf0",
+            "forestgreen": "#228b22",
+            "fuchsia": "#ff00ff",
+            "gainsboro": "#dcdcdc",
+            "ghostwhite": "#f8f8ff",
+            "gold": "#ffd700",
+            "goldenrod": "#daa520",
+            "gray": "#808080",
+            "green": "#008000",
+            "greenyellow": "#adff2f",
+            "honeydew": "#f0fff0",
+            "hotpink": "#ff69b4",
+            "indianred ": "#cd5c5c",
+            "indigo ": "#4b0082",
+            "ivory": "#fffff0",
+            "khaki": "#f0e68c",
+            "lavender": "#e6e6fa",
+            "lavenderblush": "#fff0f5",
+            "lawngreen": "#7cfc00",
+            "lemonchiffon": "#fffacd",
+            "lightblue": "#add8e6",
+            "lightcoral": "#f08080",
+            "lightcyan": "#e0ffff",
+            "lightgoldenrodyellow": "#fafad2",
+            "lightgrey": "#d3d3d3",
+            "lightgreen": "#90ee90",
+            "lightpink": "#ffb6c1",
+            "lightsalmon": "#ffa07a",
+            "lightseagreen": "#20b2aa",
+            "lightskyblue": "#87cefa",
+            "lightslategray": "#778899",
+            "lightsteelblue": "#b0c4de",
+            "lightyellow": "#ffffe0",
+            "lime": "#00ff00",
+            "limegreen": "#32cd32",
+            "linen": "#faf0e6",
+            "magenta": "#ff00ff",
+            "maroon": "#800000",
+            "mediumaquamarine": "#66cdaa",
+            "mediumblue": "#0000cd",
+            "mediumorchid": "#ba55d3",
+            "mediumpurple": "#9370d8",
+            "mediumseagreen": "#3cb371",
+            "mediumslateblue": "#7b68ee",
+            "mediumspringgreen": "#00fa9a",
+            "mediumturquoise": "#48d1cc",
+            "mediumvioletred": "#c71585",
+            "midnightblue": "#191970",
+            "mintcream": "#f5fffa",
+            "mistyrose": "#ffe4e1",
+            "moccasin": "#ffe4b5",
+            "navajowhite": "#ffdead",
+            "navy": "#000080",
+            "oldlace": "#fdf5e6",
+            "olive": "#808000",
+            "olivedrab": "#6b8e23",
+            "orange": "#ffa500",
+            "orangered": "#ff4500",
+            "orchid": "#da70d6",
+            "palegoldenrod": "#eee8aa",
+            "palegreen": "#98fb98",
+            "paleturquoise": "#afeeee",
+            "palevioletred": "#d87093",
+            "papayawhip": "#ffefd5",
+            "peachpuff": "#ffdab9",
+            "peru": "#cd853f",
+            "pink": "#ffc0cb",
+            "plum": "#dda0dd",
+            "powderblue": "#b0e0e6",
+            "purple": "#800080",
+            "red": "#ff0000",
+            "rosybrown": "#bc8f8f",
+            "royalblue": "#4169e1",
+            "saddlebrown": "#8b4513",
+            "salmon": "#fa8072",
+            "sandybrown": "#f4a460",
+            "seagreen": "#2e8b57",
+            "seashell": "#fff5ee",
+            "sienna": "#a0522d",
+            "silver": "#c0c0c0",
+            "skyblue": "#87ceeb",
+            "slateblue": "#6a5acd",
+            "slategray": "#708090",
+            "snow": "#fffafa",
+            "springgreen": "#00ff7f",
+            "steelblue": "#4682b4",
+            "tan": "#d2b48c",
+            "teal": "#008080",
+            "thistle": "#d8bfd8",
+            "tomato": "#ff6347",
+            "turquoise": "#40e0d0",
+            "violet": "#ee82ee",
+            "wheat": "#f5deb3",
+            "white": "#ffffff",
+            "whitesmoke": "#f5f5f5",
+            "yellow": "#ffff00",
+            "yellowgreen": "#9acd32",
+            "darkgrey": "#a9a9a9",
+            "darkslategrey": "#2f4f4f",
+            "dimgrey": "#696969",
+            "grey": "#808080",
+            "lightgray": "#d3d3d3",
+            "lightslategrey": "#778899",
+            "slategrey": "#708090"
+        };
+        return definedColorNames[colorName];
+    }
+};
+
+// Support for oauth token based authorization
+// This class supports explicit setting of an oauth token either globally or for specific hosts.
+//
+// The variable oauth.google.access_token, which becomes igv.oauth.google.access_token on ES5 conversion is
+// supported for backward compatibility
+
+const DEFAULT_HOST = "googleapis";
+
+class Oauth {
+
+    constructor() {
+        this.oauthTokens = {};
+    }
+
+
+    setToken(token, host) {
+        host = host || DEFAULT_HOST;
+        this.oauthTokens[host] = token;
+    }
+
+    getToken(host) {
+        host = host || DEFAULT_HOST;
+        let token;
+        for (let key of Object.keys(this.oauthTokens)) {
+            const regex = wildcardToRegExp(key);
+            if (regex.test(host)) {
+                token = this.oauthTokens[key];
+                break
+            }
+        }
+        return token
+    }
+
+    removeToken(host) {
+        host = host || DEFAULT_HOST;
+        for (let key of Object.keys(this.oauthTokens)) {
+            const regex = wildcardToRegExp(key);
+            if (regex.test(host)) {
+                this.oauthTokens[key] = undefined;
+            }
+        }
+    }
+
+    // Special object for google -- legacy support
+    // google: {
+    //     setToken: function (token) {
+    //         oauth.setToken(token);
+    //     }
+    // }
+}
+
+
+/**
+ * Creates a RegExp from the given string, converting asterisks to .* expressions,
+ * and escaping all other characters.
+ *
+ * credit https://gist.github.com/donmccurdy/6d073ce2c6f3951312dfa45da14a420f
+ */
+function wildcardToRegExp(s) {
+    return new RegExp('^' + s.split(/\*+/).map(regExpEscape).join('.*') + '$')
+}
+
+/**
+ * RegExp-escapes all characters in the given string.
+ *
+ * credit https://gist.github.com/donmccurdy/6d073ce2c6f3951312dfa45da14a420f
+ */
+function regExpEscape(s) {
+    return s.replace(/[|\\{}()[\]^$+*?.]/g, '\\$&')
+}
+
+function isGoogleURL(url) {
+    return (url.includes("googleapis") && !url.includes("urlshortener")) ||
+        isGoogleStorageURL(url) ||
+        isGoogleDriveURL(url)
+}
+
+function isGoogleStorageURL(url) {
+    return url.startsWith("gs://") ||
+        url.startsWith("https://www.googleapis.com/storage") ||
+        url.startsWith("https://storage.cloud.google.com") ||
+        url.startsWith("https://storage.googleapis.com");
+}
+
+function isGoogleDriveURL(url) {
+    return url.indexOf("drive.google.com") >= 0 || url.indexOf("www.googleapis.com/drive") > 0
+}
+
+/**
+ * Translate gs:// urls to https
+ * See https://cloud.google.com/storage/docs/json_api/v1
+ * @param gsUrl
+ * @returns {string|*}
+ */
+function translateGoogleCloudURL(gsUrl) {
+
+    let {bucket, object} = parseBucketName(gsUrl);
+    object = encode(object);
+
+    const qIdx = gsUrl.indexOf('?');
+    const paramString = (qIdx > 0) ? gsUrl.substring(qIdx) + "&alt=media" : "?alt=media";
+
+    return `https://storage.googleapis.com/storage/v1/b/${bucket}/o/${object}${paramString}`
+}
+
+/**
+ * Parse a google bucket and object name from a google storage URL.  Known forms include
+ *
+ * gs://BUCKET_NAME/OBJECT_NAME
+ * https://storage.googleapis.com/BUCKET_NAME/OBJECT_NAME
+ * https://storage.googleapis.com/storage/v1/b/BUCKET_NAME/o/OBJECT_NAME
+ * https://www.googleapis.com/storage/v1/b/BUCKET_NAME/o/OBJECT_NAME"
+ * https://storage.googleapis.com/download/storage/v1/b/BUCKET_NAME/o/OBJECT_NAME
+ *
+ * @param url
+ */
+function parseBucketName(url) {
+
+    let bucket;
+    let object;
+
+    if (url.startsWith("gs://")) {
+        const i = url.indexOf('/', 5);
+        if (i >= 0) {
+            bucket = url.substring(5, i);
+            const qIdx = url.indexOf('?');
+            object = (qIdx < 0) ? url.substring(i + 1) : url.substring(i + 1, qIdx);
+        }
+
+    } else if (url.startsWith("https://storage.googleapis.com") || url.startsWith("https://storage.cloud.google.com")) {
+        const bucketIdx = url.indexOf("/v1/b/", 8);
+        if (bucketIdx > 0) {
+            const objIdx = url.indexOf("/o/", bucketIdx);
+            if (objIdx > 0) {
+                const queryIdx = url.indexOf("?", objIdx);
+                bucket = url.substring(bucketIdx + 6, objIdx);
+                object = queryIdx > 0 ? url.substring(objIdx + 3, queryIdx) : url.substring(objIdx + 3);
+            }
+
+        } else {
+            const idx1 = url.indexOf("/", 8);
+            const idx2 = url.indexOf("/", idx1+1);
+            const idx3 = url.indexOf("?", idx2);
+            if (idx2 > 0) {
+                bucket = url.substring(idx1+1, idx2);
+                object = idx3 < 0 ? url.substring(idx2+1) : url.substring(idx2+1, idx3);
+            }
+        }
+
+    } else if (url.startsWith("https://www.googleapis.com/storage/v1/b")) {
+        const bucketIdx = url.indexOf("/v1/b/", 8);
+        const objIdx = url.indexOf("/o/", bucketIdx);
+        if (objIdx > 0) {
+            const queryIdx = url.indexOf("?", objIdx);
+            bucket = url.substring(bucketIdx + 6, objIdx);
+            object = queryIdx > 0 ? url.substring(objIdx + 3, queryIdx) : url.substring(objIdx + 3);
+        }
+    }
+
+    if (bucket && object) {
+        return {
+            bucket, object
+        }
+    } else {
+        throw Error(`Unrecognized Google Storage URI: ${url}`)
+    }
+
+}
+
+/**
+ * Percent a GCS object name.  See https://cloud.google.com/storage/docs/request-endpoints
+ * Specific characters to encode:
+ *   !, #, $, &, ', (, ), *, +, ,, /, :, ;, =, ?, @, [, ], and space characters.
+ * @param obj
+ */
+
+function encode(objectName) {
+
+    let result = '';
+    objectName.split('').forEach(function(letter) {
+        if(encodings$1.has(letter)) {
+            result += encodings$1.get(letter);
+        } else {
+            result += letter;
+        }
+    });
+    return result;
+}
+
+//	%23	%24	%25	%26	%27	%28	%29	%2A	%2B	%2C	%2F	%3A	%3B	%3D	%3F	%40	%5B	%5D
+const encodings$1 = new Map();
+encodings$1.set("!", "%21");
+encodings$1.set("#", "%23");
+encodings$1.set("$", "%24");
+encodings$1.set("%", "%25");
+encodings$1.set("&", "%26");
+encodings$1.set("'", "%27");
+encodings$1.set("(", "%28");
+encodings$1.set(")", "%29");
+encodings$1.set("*", "%2A");
+encodings$1.set("+", "%2B");
+encodings$1.set(",", "%2C");
+encodings$1.set("/", "%2F");
+encodings$1.set(":", "%3A");
+encodings$1.set(";", "%3B");
+encodings$1.set("=", "%3D");
+encodings$1.set("?", "%3F");
+encodings$1.set("@", "%40");
+encodings$1.set("[", "%5B");
+encodings$1.set("]", "%5D");
+encodings$1.set(" ", "%20");
+
+// Convenience functions for the gapi oAuth library.
+
+async function init$1(config) {
+
+    if (!(google.accounts.oauth2.initTokenClient)) {
+        throw new Error("Google accounts token client not loaded (https://accounts.google.com/gsi/client)")
+    }
+
+    if (isInitialized()) {
+        throw new Error("Google client is already initialized")
+    }
+
+    // Note: callback is added when accessToken is requested
+    const codeClientConfig = {
+        client_id: config.client_id,
+        scope: config.scope || 'https://www.googleapis.com/auth/userinfo.profile',
+        state: config.state || 'igv',
+        error: (err) => {
+            throw new Error(err.type)
+        },
+        hint: config.hint,     // Optional
+        hosted_domain: config.hosted_domain  // Optional
+    };
+
+    const tokenClient = google.accounts.oauth2.initTokenClient(codeClientConfig);
+
+    // Attach an object to keep igv state
+    google.igv = {
+        tokenClient: tokenClient,
+        apiKey: config.apiKey
+    };
+}
+
+function isInitialized() {
+    return window.google && window.google.igv
+}
+
+/**
+ * Return the current access token if the user is signed in, or undefined otherwise.  This function does not
+ * attempt a signIn or request any specfic scopes.
+ *
+ * @returns access_token || undefined
+ */
+function getCurrentAccessToken() {
+    return (isInitialized() && google.igv.tokenResponse && Date.now() < google.igv.tokenExpiresAt) ?
+        google.igv.tokenResponse.access_token :
+        undefined
+}
+
+
+/**
+ * Return a promise for an access token for the given scope.  If the user hasn't authorized the scope request it
+ *
+ * @param scope
+ * @returns {Promise<unknown>}
+ */
+async function getAccessToken(scope) {
+
+    if (!isInitialized()) {
+        throw Error("Google oAuth has not been initialized")
+    }
+
+    if (google.igv.tokenResponse &&
+        Date.now() < google.igv.tokenExpiresAt &&
+        google.accounts.oauth2.hasGrantedAllScopes(google.igv.tokenResponse, scope)) {
+        return google.igv.tokenResponse.access_token
+    } else {
+        const tokenClient = google.igv.tokenClient;
+        return new Promise((resolve, reject) => {
+            try {
+                // Settle this promise in the response callback for requestAccessToken()
+                tokenClient.callback = (tokenResponse) => {
+                    if (tokenResponse.error !== undefined) {
+                        reject(tokenResponse);
+                    }
+                    google.igv.tokenResponse = tokenResponse;
+                    google.igv.tokenExpiresAt = Date.now() + tokenResponse.expires_in * 1000;
+                    resolve(tokenResponse.access_token);
+                };
+                tokenClient.requestAccessToken({scope});
+            } catch (err) {
+                console.log(err);
+            }
+        })
+    }
+}
+
+// gapi.auth2.getAuthInstance().isSignedIn.listen(status => {
+//     const user = gapi.auth2.getAuthInstance().currentUser.get()
+//     queryGoogleAuthenticationStatus(user, status)
+// })
+
+function getScopeForURL(url) {
+    if (isGoogleDriveURL(url)) {
+        return "https://www.googleapis.com/auth/drive.readonly"
+    } else if (isGoogleStorageURL(url)) {
+        return "https://www.googleapis.com/auth/devstorage.read_only"
+    } else {
+        return 'https://www.googleapis.com/auth/userinfo.profile'
+    }
+}
+
+function getApiKey() {
+    return google.igv.apiKey
+}
+
+/**
+ * Return information about a specific google drive URL
+ *
+ * @param googleDriveURL
+ * @returns {Promise<any>}
+ */
+async function getDriveFileInfo(googleDriveURL) {
+
+    const id = getGoogleDriveFileID(googleDriveURL);
+    let endPoint = "https://www.googleapis.com/drive/v3/files/" + id + "?supportsTeamDrives=true";
+    const apiKey = getApiKey();
+    if (apiKey) {
+        endPoint += "&key=" + apiKey;
+    }
+    const response = await fetch(endPoint);
+    let json = await response.json();
+    if (json.error && json.error.code === 404) {
+        let scope = "https://www.googleapis.com/auth/drive.readonly";
+        const access_token = await getAccessToken(scope);
+        if (access_token) {
+            const response = await fetch(endPoint, {
+                headers: {
+                    'Authorization': `Bearer ${access_token}`
+                }
+            });
+            json = await response.json();
+            if (json.error) {
+                throw Error(json.error);
+            }
+        } else {
+            throw Error(json.error);
+        }
+    }
+    return json;
+}
+
+
+function getDriveDownloadURL(link) {
+    // Return a google drive download url for the sharable link
+    //https://drive.google.com/open?id=0B-lleX9c2pZFbDJ4VVRxakJzVGM
+    //https://drive.google.com/file/d/1_FC4kCeO8E3V4dJ1yIW7A0sn1yURKIX-/view?usp=sharing
+    var id = getGoogleDriveFileID(link);
+    return id ? "https://www.googleapis.com/drive/v3/files/" + id + "?alt=media&supportsTeamDrives=true" : link;
+}
+
+function getGoogleDriveFileID(link) {
+
+    //https://drive.google.com/file/d/1_FC4kCeO8E3V4dJ1yIW7A0sn1yURKIX-/view?usp=sharing
+    //https://www.googleapis.com/drive/v3/files/1w-tvo6p1SH4p1OaQSVxpkV_EJgGIstWF?alt=media&supportsTeamDrives=true"
+
+    if (link.includes("/open?id=")) {
+        const i1 = link.indexOf("/open?id=") + 9;
+        const i2 = link.indexOf("&");
+        if (i1 > 0 && i2 > i1) {
+            return link.substring(i1, i2)
+        } else if (i1 > 0) {
+            return link.substring(i1);
+        }
+
+    } else if (link.includes("/file/d/")) {
+        const i1 = link.indexOf("/file/d/") + 8;
+        const i2 = link.lastIndexOf("/");
+        return link.substring(i1, i2);
+
+    } else if (link.startsWith("https://www.googleapis.com/drive")) {
+        let i1 = link.indexOf("/files/");
+        const i2 = link.indexOf("?");
+        if (i1 > 0) {
+            i1 += 7;
+            return i2 > 0 ?
+                link.substring(i1, i2) :
+                link.substring(i1)
+        }
+    }
+
+    throw Error("Unknown Google Drive url format: " + link);
+
+
+}
+
+// The MIT License (MIT)
+
+/**
+ * @constructor
+ * @param {Object} options A set op options to pass to the throttle function
+ *        @param {number} requestsPerSecond The amount of requests per second
+ *                                          the library will limit to
+ */
+class Throttle {
+    constructor(options) {
+        this.requestsPerSecond = options.requestsPerSecond || 10;
+        this.lastStartTime = 0;
+        this.queued = [];
+    }
+
+    /**
+     * Adds a promise
+     * @param {Function} async function to be executed
+     * @param {Object} options A set of options.
+     * @return {Promise} A promise
+     */
+    add(asyncFunction, options) {
+
+        var self = this;
+        return new Promise(function (resolve, reject) {
+            self.queued.push({
+                resolve: resolve,
+                reject: reject,
+                asyncFunction: asyncFunction,
+            });
+            self.dequeue();
+        });
+    }
+
+    /**
+     * Adds all the promises passed as parameters
+     * @param {Function} promises An array of functions that return a promise
+     * @param {Object} options A set of options.
+     * @param {number} options.signal An AbortSignal object that can be used to abort the returned promise
+     * @param {number} options.weight A "weight" of each operation resolving by array of promises
+     * @return {Promise} A promise that succeeds when all the promises passed as options do
+     */
+    addAll(promises, options) {
+        var addedPromises = promises.map(function (promise) {
+            return this.add(promise, options);
+        }.bind(this));
+
+        return Promise.all(addedPromises);
+    };
+
+    /**
+     * Dequeues a promise
+     * @return {void}
+     */
+    dequeue() {
+        if (this.queued.length > 0) {
+            var now = new Date(),
+                inc = (1000 / this.requestsPerSecond) + 1,
+                elapsed = now - this.lastStartTime;
+
+            if (elapsed >= inc) {
+                this._execute();
+            } else {
+                // we have reached the limit, schedule a dequeue operation
+                setTimeout(function () {
+                    this.dequeue();
+                }.bind(this), inc - elapsed);
+            }
+        }
+    }
+
+    /**
+     * Executes the promise
+     * @private
+     * @return {void}
+     */
+    async _execute() {
+        this.lastStartTime = new Date();
+        var candidate = this.queued.shift();
+        const f = candidate.asyncFunction;
+        try {
+            const r = await f();
+            candidate.resolve(r);
+        } catch (e) {
+            candidate.reject(e);
+        }
+
+    }
+
+
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class IGVXhr {
+
+    constructor() {
+        this.apiKey = undefined;
+        this.googleThrottle = new Throttle({
+            requestsPerSecond: 8
+        });
+        this.RANGE_WARNING_GIVEN = false;
+        this.oauth = new Oauth();
+    }
+
+    setApiKey(key) {
+        this.apiKey = key;
+    }
+
+    async loadArrayBuffer(url, options) {
+        options = options || {};
+        if (!options.responseType) {
+            options.responseType = "arraybuffer";
+        }
+        if (isFile(url)) {
+            return this._loadFileSlice(url, options)
+        } else {
+            return this.load(url, options)
+        }
+    }
+
+    async loadJson(url, options) {
+        options = options || {};
+        const method = options.method || (options.sendData ? "POST" : "GET");
+        if (method === "POST") {
+            options.contentType = "application/json";
+        }
+        const result = await this.loadString(url, options);
+        if (result) {
+            return JSON.parse(result)
+        } else {
+            return result
+        }
+    }
+
+    async loadString(path, options) {
+        options = options || {};
+        if (path instanceof File) {
+            return this._loadStringFromFile(path, options)
+        } else {
+            return this._loadStringFromUrl(path, options)
+        }
+    }
+
+    async load(url, options) {
+
+        options = options || {};
+        const urlType = typeof url;
+
+        // Resolve functions, promises, and functions that return promises
+        url = await (typeof url === 'function' ? url() : url);
+
+        if (isFile(url)) {
+            return this._loadFileSlice(url, options)
+        } else if (typeof url.startsWith === 'function') {   // Test for string
+            if (url.startsWith("data:")) {
+                const buffer = decodeDataURI$1(url).buffer;
+                if (options.range) {
+                    const rangeEnd = options.range.size ? options.range.start + options.range.size : buffer.byteLength;
+                    return buffer.slice(options.range.start, rangeEnd)
+                } else {
+                    return buffer
+                }
+            } else {
+                if (url.startsWith("https://drive.google.com")) {
+                    url = getDriveDownloadURL(url);
+                }
+                if (isGoogleDriveURL(url) || url.startsWith("https://www.dropbox.com")) {
+                    return this.googleThrottle.add(async () => {
+                        return this._loadURL(url, options)
+                    })
+                } else {
+                    return this._loadURL(url, options)
+                }
+            }
+        } else {
+            throw Error(`url must be either a 'File', 'string', 'function', or 'Promise'.  Actual type: ${urlType}`)
+        }
+    }
+
+    async _loadURL(url, options) {
+
+        const self = this;
+        const _url = url;   // The unmodified URL, needed in case of an oAuth retry
+
+        url = mapUrl$1(url);
+
+        options = options || {};
+
+        let oauthToken = options.oauthToken || this.getOauthToken(url);
+        if (oauthToken) {
+            oauthToken = await (typeof oauthToken === 'function' ? oauthToken() : oauthToken);
+        }
+
+        return new Promise(function (resolve, reject) {
+
+            // Various Google tansformations
+            if (isGoogleURL(url) && !isGoogleStorageSigned(url)) {
+                if (isGoogleStorageURL(url)) {
+                    url = translateGoogleCloudURL(url);
+                }
+                url = addApiKey(url);
+
+                if (isGoogleDriveURL(url)) {
+                    addTeamDrive(url);
+                }
+
+                // If we have an access token try it, but don't force a signIn or request for scopes yet
+                if (!oauthToken) {
+                    oauthToken = getCurrentGoogleAccessToken();
+                }
+            }
+
+            const headers = options.headers || {};
+            if (oauthToken) {
+                addOauthHeaders(headers, oauthToken);
+            }
+            const range = options.range;
+
+
+            const xhr = new XMLHttpRequest();
+            const sendData = options.sendData || options.body;
+            const method = options.method || (sendData ? "POST" : "GET");
+            const responseType = options.responseType;
+            const contentType = options.contentType;
+            const mimeType = options.mimeType;
+
+            xhr.open(method, url);
+
+            if (options.timeout) {
+                xhr.timeout = options.timeout;
+            }
+
+            if (range) {
+                let rangeEnd = "";
+                if (range.size) {
+                    rangeEnd = range.start + range.size - 1;
+                }
+                xhr.setRequestHeader("Range", "bytes=" + range.start + "-" + rangeEnd);
+                //      xhr.setRequestHeader("Cache-Control", "no-cache");    <= This can cause CORS issues, disabled for now
+            }
+            if (contentType) {
+                xhr.setRequestHeader("Content-Type", contentType);
+            }
+            if (mimeType) {
+                xhr.overrideMimeType(mimeType);
+            }
+            if (responseType) {
+                xhr.responseType = responseType;
+            }
+            if (headers) {
+                for (let key of Object.keys(headers)) {
+                    const value = headers[key];
+                    xhr.setRequestHeader(key, value);
+                }
+            }
+
+            // NOTE: using withCredentials with servers that return "*" for access-allowed-origin will fail
+            if (options.withCredentials === true) {
+                xhr.withCredentials = true;
+            }
+
+            xhr.onload = async function (event) {
+
+                // when the url points to a local file, the status is 0
+                if (xhr.status === 0 || (xhr.status >= 200 && xhr.status <= 300)) {
+                    if ("HEAD" === options.method) {
+                        // Support fetching specific headers.  Attempting to fetch all headers can be problematic with CORS
+                        const headers = options.requestedHeaders || ['content-length'];
+                        const headerMap = {};
+                        for (let h of headers) {
+                            headerMap[h] = xhr.getResponseHeader(h);
+                        }
+                        resolve(headerMap);
+                    } else {
+                        // Assume "GET" or "POST"
+                        if (range && xhr.status !== 206 && range.start !== 0) {
+
+                            // For small files a range starting at 0 can return the whole file => 200
+                            // Provide just the slice we asked for, throw out the rest quietly
+                            // If file is large warn user
+                            if (xhr.response.length > 100000 && !self.RANGE_WARNING_GIVEN) {
+                                alert(`Warning: Range header ignored for URL: ${url}.  This can have severe performance impacts.`);
+                            }
+                            resolve(xhr.response.slice(range.start, range.start + range.size));
+                        } else {
+                            resolve(xhr.response);
+                        }
+                    }
+                } else if (xhr.status === 416) {
+                    handleError(Error(`416 Unsatisfiable Range`));
+                } else if ((typeof gapi !== "undefined") &&
+                    ((xhr.status === 404 || xhr.status === 401 || xhr.status === 403) &&
+                        isGoogleURL(url)) &&
+                    !options.retries) {
+                    tryGoogleAuth();
+
+                } else {
+                    if (xhr.status === 403) {
+                        handleError("Access forbidden: " + url);
+                    } else {
+                        handleError(xhr.status);
+                    }
+                }
+            };
+
+
+            xhr.onerror = function (event) {
+                if (isGoogleURL(url) && !options.retries) {
+                    tryGoogleAuth();
+                } else {
+                    handleError("Error accessing resource: " + url + " Status: " + xhr.status);
+                }
+            };
+
+            xhr.ontimeout = function (event) {
+                handleError("Timed out");
+            };
+
+            xhr.onabort = function (event) {
+                console.log("Aborted");
+                reject(event);
+            };
+
+            try {
+                xhr.send(sendData);
+            } catch (e) {
+                if (isGoogleURL(url) && !options.retries) {
+                    tryGoogleAuth();
+                } else {
+                    handleError(e);
+                }
+            }
+
+
+            function handleError(error) {
+                if (reject) {
+                    reject(error);
+                } else {
+                    throw error
+                }
+            }
+
+            async function tryGoogleAuth() {
+                try {
+                    const accessToken = await fetchGoogleAccessToken(_url);
+                    options.retries = 1;
+                    options.oauthToken = accessToken;
+                    const response = await self.load(_url, options);
+                    resolve(response);
+                } catch (e) {
+                    if (e.error) {
+                        const msg = e.error.startsWith("popup_blocked") ?
+                            "Google login popup blocked by browser." :
+                            e.error;
+                        alert(msg);
+                    } else {
+                        handleError(e);
+                    }
+                }
+            }
+        })
+
+    }
+
+    async _loadFileSlice(localfile, options) {
+
+        let blob = (options && options.range) ?
+            localfile.slice(options.range.start, options.range.start + options.range.size) :
+            localfile;
+
+        const arrayBuffer = await blob.arrayBuffer();
+
+        if ("arraybuffer" === options.responseType) {
+            return arrayBuffer
+        } else {
+            return arrayBufferToString(arrayBuffer)
+        }
+    }
+
+    async _loadStringFromFile(localfile, options) {
+
+        const blob = options.range ? localfile.slice(options.range.start, options.range.start + options.range.size) : localfile;
+        const arrayBuffer = await blob.arrayBuffer();
+        return arrayBufferToString(arrayBuffer)
+    }
+
+    async _loadStringFromUrl(url, options) {
+
+        options = options || {};
+        options.responseType = "arraybuffer";
+        const data = await this.load(url, options);
+        return arrayBufferToString(data)
+    }
+
+    /**
+     * Explicity set an oAuth token for use with given host.  If host is undefined token is used for google api access*
+     * @param token
+     * @param host
+     */
+    setOauthToken(token, host) {
+        this.oauth.setToken(token, host);
+    }
+
+    /**
+     * Return an oauth token for the URL if we have one.  This method does not force sign-in, and the token may
+     * or may not be valid.  Sign-in is triggered on request failure.
+     * *
+     * @param url
+     * @returns {*}
+     */
+    getOauthToken(url) {
+
+        // Google is the default provider, don't try to parse host for google URLs
+        const host = isGoogleURL(url) ?
+            undefined :
+            parseUri(url).host;
+
+        // First check the explicit settings (i.e. token set through the API)
+        let token = this.oauth.getToken(host);
+        if (token) {
+            return token
+        } else if (host === undefined) {
+            // Now try Google oauth tokens previously obtained.  This will return undefined if google oauth is not
+            // configured.
+            const googleToken = getCurrentGoogleAccessToken();
+            if (googleToken && googleToken.expires_at > Date.now()) {
+                return googleToken.access_token
+            }
+        }
+    }
+
+    /**
+     * This method should only be called when it is known the server supports HEAD requests.  It is used to recover
+     * from 416 errors from out-of-spec WRT range request servers.  Notably Globus.
+     * * *
+     * @param url
+     * @param options
+     * @returns {Promise<unknown>}
+     */
+    async getContentLength(url, options) {
+        options = options || {};
+        options.method = 'HEAD';
+        options.requestedHeaders = ['content-length'];
+        const headerMap = await this._loadURL(url, options);
+        const contentLengthString = headerMap['content-length'];
+        return contentLengthString ? Number.parseInt(contentLengthString) : 0
+    }
+
+}
+
+function isGoogleStorageSigned(url) {
+    return url.indexOf("X-Goog-Signature") > -1
+}
+
+
+/**
+ * Return a Google oAuth token, triggering a sign in if required.   This method should not be called until we know
+ * a token is required, that is until we've tried the url and received a 401, 403, or 404.
+ *
+ * @param url
+ * @returns the oauth token
+ */
+async function fetchGoogleAccessToken(url) {
+    if (isInitialized()) {
+        const scope = getScopeForURL(url);
+        const access_token = await getAccessToken(scope);
+        return access_token
+    } else {
+        throw Error(
+            `Authorization is required, but Google oAuth has not been initalized. Contact your site administrator for assistance.`)
+    }
+}
+
+/**
+ * Return the current google access token, if one exists.  Do not triger signOn or request additional scopes.
+ * @returns {undefined|access_token}
+ */
+function getCurrentGoogleAccessToken() {
+    if (isInitialized()) {
+        const access_token = getCurrentAccessToken();
+        return access_token
+    } else {
+        return undefined
+    }
+}
+
+function addOauthHeaders(headers, acToken) {
+    if (acToken) {
+        headers["Cache-Control"] = "no-cache";
+        headers["Authorization"] = "Bearer " + acToken;
+    }
+    return headers
+}
+
+
+function addApiKey(url) {
+    let apiKey = igvxhr.apiKey;
+    if (!apiKey && typeof gapi !== "undefined") {
+        apiKey = gapi.apiKey;
+    }
+    if (apiKey !== undefined && !url.includes("key=")) {
+        const paramSeparator = url.includes("?") ? "&" : "?";
+        url = url + paramSeparator + "key=" + apiKey;
+    }
+    return url
+}
+
+function addTeamDrive(url) {
+    if (url.includes("supportsTeamDrive")) {
+        return url
+    } else {
+        const paramSeparator = url.includes("?") ? "&" : "?";
+        url = url + paramSeparator + "supportsTeamDrive=true";
+    }
+}
+
+/**
+ * Perform some well-known url mappings.
+ * @param url
+ */
+function mapUrl$1(url) {
+
+    if (url.startsWith("https://www.dropbox.com")) {
+        return url.replace("//www.dropbox.com", "//dl.dropboxusercontent.com")
+    } else if (url.startsWith("https://drive.google.com")) {
+        return getDriveDownloadURL(url)
+    } else if (url.includes("//www.broadinstitute.org/igvdata")) {
+        return url.replace("//www.broadinstitute.org/igvdata", "//data.broadinstitute.org/igvdata")
+    } else if (url.includes("//igvdata.broadinstitute.org")) {
+        return url.replace("//igvdata.broadinstitute.org", "//s3.amazonaws.com/igv.broadinstitute.org")
+    } else if (url.includes("//igv.genepattern.org")) {
+        return url.replace("//igv.genepattern.org", "//igv-genepattern-org.s3.amazonaws.com")
+    } else if (url.startsWith("ftp://ftp.ncbi.nlm.nih.gov/geo")) {
+        return url.replace("ftp://", "https://")
+    } else {
+        return url
+    }
+}
+
+
+function arrayBufferToString(arraybuffer) {
+
+    let plain;
+    if (isgzipped(arraybuffer)) {
+        plain = ungzip_blocks(arraybuffer);
+    } else {
+        plain = new Uint8Array(arraybuffer);
+    }
+
+    if ('TextDecoder' in getGlobalObject()) {
+        return new TextDecoder().decode(plain)
+    } else {
+        return decodeUTF8(plain)
+    }
+}
+
+/**
+ * Use when TextDecoder is not available (primarily IE).
+ *
+ * From: https://gist.github.com/Yaffle/5458286
+ *
+ * @param octets
+ * @returns {string}
+ */
+function decodeUTF8(octets) {
+    var string = "";
+    var i = 0;
+    while (i < octets.length) {
+        var octet = octets[i];
+        var bytesNeeded = 0;
+        var codePoint = 0;
+        if (octet <= 0x7F) {
+            bytesNeeded = 0;
+            codePoint = octet & 0xFF;
+        } else if (octet <= 0xDF) {
+            bytesNeeded = 1;
+            codePoint = octet & 0x1F;
+        } else if (octet <= 0xEF) {
+            bytesNeeded = 2;
+            codePoint = octet & 0x0F;
+        } else if (octet <= 0xF4) {
+            bytesNeeded = 3;
+            codePoint = octet & 0x07;
+        }
+        if (octets.length - i - bytesNeeded > 0) {
+            var k = 0;
+            while (k < bytesNeeded) {
+                octet = octets[i + k + 1];
+                codePoint = (codePoint << 6) | (octet & 0x3F);
+                k += 1;
+            }
+        } else {
+            codePoint = 0xFFFD;
+            bytesNeeded = octets.length - i;
+        }
+        string += String.fromCodePoint(codePoint);
+        i += bytesNeeded + 1;
+    }
+    return string
+}
+
+
+function getGlobalObject() {
+    if (typeof self !== 'undefined') {
+        return self
+    }
+    if (typeof global !== 'undefined') {
+        return global
+    } else {
+        return window
+    }
+}
+
+
+const igvxhr = new IGVXhr();
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/** An implementation of an interval tree, following the explanation.
+ * from CLR.
+ *
+ * Public interface:
+ *   Constructor  IntervalTree
+ *   Insertion    insert
+ *   Search       findOverlapping
+ */
+
+var BLACK = 1;
+var RED = 2;
+
+var NIL = {};
+NIL.color = BLACK;
+NIL.parent = NIL;
+NIL.left = NIL;
+NIL.right = NIL;
+
+
+class IntervalTree {
+
+    constructor() {
+        this.root = NIL;
+    }
+
+    insert(start, end, value) {
+
+        var interval = new Interval(start, end, value);
+        var x = new Node(interval);
+        this.treeInsert(x);
+        x.color = RED;
+        while (x !== this.root && x.parent.color === RED) {
+            if (x.parent === x.parent.parent.left) {
+                let y = x.parent.parent.right;
+                if (y.color === RED) {
+                    x.parent.color = BLACK;
+                    y.color = BLACK;
+                    x.parent.parent.color = RED;
+                    x = x.parent.parent;
+                } else {
+                    if (x === x.parent.right) {
+                        x = x.parent;
+                        leftRotate.call(this, x);
+                    }
+                    x.parent.color = BLACK;
+                    x.parent.parent.color = RED;
+                    rightRotate.call(this, x.parent.parent);
+                }
+            } else {
+                let y = x.parent.parent.left;
+                if (y.color === RED) {
+                    x.parent.color = BLACK;
+                    y.color = BLACK;
+                    x.parent.parent.color = RED;
+                    x = x.parent.parent;
+                } else {
+                    if (x === x.parent.left) {
+                        x = x.parent;
+                        rightRotate.call(this, x);
+                    }
+                    x.parent.color = BLACK;
+                    x.parent.parent.color = RED;
+                    leftRotate.call(this, x.parent.parent);
+                }
+            }
+        }
+        this.root.color = BLACK;
+    }
+
+    /**
+     *
+     * @param start - query interval
+     * @param end - query interval
+     * @returns Array of all intervals overlapping the query region
+     */
+    findOverlapping(start, end) {
+
+
+        var searchInterval = new Interval(start, end, 0);
+
+        if (this.root === NIL) return [];
+
+        var intervals = searchAll.call(this, searchInterval, this.root, []);
+
+        if (intervals.length > 1) {
+            intervals.sort(function (i1, i2) {
+                return i1.low - i2.low;
+            });
+        }
+
+        return intervals;
+    }
+
+    /**
+     * Dump info on intervals to console.  For debugging.
+     */
+    logIntervals() {
+
+        logNode(this.root, 0);
+
+        function logNode(node, indent) {
+
+            var space = "";
+            for (var i = 0; i < indent; i++) space += " ";
+            console.log(space + node.interval.low + " " + node.interval.high); // + " " + (node.interval.value ? node.interval.value : " null"));
+
+            indent += 5;
+
+            if (node.left !== NIL) logNode(node.left, indent);
+            if (node.right !== NIL) logNode(node.right, indent);
+        }
+
+    }
+
+    mapIntervals(func) {
+
+        applyInterval(this.root);
+
+        function applyInterval(node) {
+
+            func(node.interval);
+
+            if (node.left !== NIL) applyInterval(node.left);
+            if (node.right !== NIL) applyInterval(node.right);
+        }
+    }
+
+
+    /**
+     * Note:  Does not maintain RB constraints,  this is done post insert
+     *
+     * @param x  a Node
+     */
+    treeInsert(x) {
+        var node = this.root;
+        var y = NIL;
+        while (node !== NIL) {
+            y = node;
+            if (x.interval.low <= node.interval.low) {
+                node = node.left;
+            } else {
+                node = node.right;
+            }
+        }
+        x.parent = y;
+
+        if (y === NIL) {
+            this.root = x;
+            x.left = x.right = NIL;
+        } else {
+            if (x.interval.low <= y.interval.low) {
+                y.left = x;
+            } else {
+                y.right = x;
+            }
+        }
+
+        applyUpdate.call(this, x);
+    }
+}
+
+function searchAll(interval, node, results) {
+
+    if (node.interval.overlaps(interval)) {
+        results.push(node.interval);
+    }
+
+    if (node.left !== NIL && node.left.max >= interval.low) {
+        searchAll.call(this, interval, node.left, results);
+    }
+
+    if (node.right !== NIL && node.right.min <= interval.high) {
+        searchAll.call(this, interval, node.right, results);
+    }
+
+    return results;
+}
+
+function leftRotate(x) {
+    var y = x.right;
+    x.right = y.left;
+    if (y.left !== NIL) {
+        y.left.parent = x;
+    }
+    y.parent = x.parent;
+    if (x.parent === NIL) {
+        this.root = y;
+    } else {
+        if (x.parent.left === x) {
+            x.parent.left = y;
+        } else {
+            x.parent.right = y;
+        }
+    }
+    y.left = x;
+    x.parent = y;
+
+    applyUpdate.call(this, x);
+    // no need to apply update on y, since it'll y is an ancestor
+    // of x, and will be touched by applyUpdate().
+}
+
+
+function rightRotate(x) {
+    var y = x.left;
+    x.left = y.right;
+    if (y.right !== NIL) {
+        y.right.parent = x;
+    }
+    y.parent = x.parent;
+    if (x.parent === NIL) {
+        this.root = y;
+    } else {
+        if (x.parent.right === x) {
+            x.parent.right = y;
+        } else {
+            x.parent.left = y;
+        }
+    }
+    y.right = x;
+    x.parent = y;
+
+
+    applyUpdate.call(this, x);
+    // no need to apply update on y, since it'll y is an ancestor
+    // of x, and will be touched by applyUpdate().
+}
+
+
+// Applies the statistic update on the node and its ancestors.
+function applyUpdate(node) {
+    while (node !== NIL) {
+        var nodeMax = node.left.max > node.right.max ? node.left.max : node.right.max;
+        var intervalHigh = node.interval.high;
+        node.max = nodeMax > intervalHigh ? nodeMax : intervalHigh;
+
+        var nodeMin = node.left.min < node.right.min ? node.left.min : node.right.min;
+        var intervalLow = node.interval.low;
+        node.min = nodeMin < intervalLow ? nodeMin : intervalLow;
+
+        node = node.parent;
+    }
+}
+
+
+class Interval {
+    constructor(low, high, value) {
+        this.low = low;
+        this.high = high;
+        this.value = value;
+    }
+
+    equals(other) {
+        if (!other) {
+            return false;
+        }
+        if (this === other) {
+            return true;
+        }
+        return (this.low === other.low &&
+            this.high === other.high);
+
+    }
+
+    compareTo(other) {
+        if (this.low < other.low)
+            return -1;
+        if (this.low > other.low)
+            return 1;
+
+        if (this.high < other.high)
+            return -1;
+        if (this.high > other.high)
+            return 1;
+
+        return 0;
+    }
+
+    /**
+     * Returns true if this interval overlaps the other.
+     */
+    overlaps(other) {
+            return (this.low <= other.high && other.low <= this.high);
+    }
+}
+
+function Node(interval) {
+    this.parent = NIL;
+    this.left = NIL;
+    this.right = NIL;
+    this.interval = interval;
+    this.color = RED;
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * Object for caching lists of features.  Supports effecient queries for sub-range  (chr, start, end)
+ *
+ * @param featureList
+ * @param The genomic range spanned by featureList (optional)
+ * @constructor
+ */
+
+class FeatureCache$1 {
+
+    constructor(featureList, genome, range) {
+
+        featureList = featureList || [];
+        this.treeMap = this.buildTreeMap(featureList, genome);
+        this.range = range;
+        this.count = featureList.length;
+    }
+
+    containsRange(genomicRange) {
+        // No range means cache contains all features
+        return (this.range === undefined || this.range.contains(genomicRange.chr, genomicRange.start, genomicRange.end));
+    }
+
+    queryFeatures(chr, start, end) {
+
+        const tree = this.treeMap[chr];
+
+        if (!tree) return [];
+
+        const intervals = tree.findOverlapping(start, end);
+
+        if (intervals.length === 0) {
+            return [];
+        } else {
+            // Trim the list of features in the intervals to those
+            // overlapping the requested range.
+            // Assumption: features are sorted by start position
+
+            const featureList = [];
+            const all = this.allFeatures[chr];
+            if (all) {
+                for (let interval of intervals) {
+                    const indexRange = interval.value;
+                    for (let i = indexRange.start; i < indexRange.end; i++) {
+                        let feature = all[i];
+                        if (feature.start > end) break;
+                        else if (feature.end >= start) {
+                            featureList.push(feature);
+                        }
+                    }
+                }
+                featureList.sort(function (a, b) {
+                    return a.start - b.start;
+                });
+            }
+            return featureList;
+        }
+    };
+
+    /**
+     * Returns all features, unsorted.
+     *
+     * @returns {Array}
+     */
+    getAllFeatures() {
+        return this.allFeatures;
+    }
+
+    buildTreeMap(featureList, genome) {
+
+        const treeMap = {};
+        const chromosomes = [];
+        this.allFeatures = {};
+
+        if (featureList) {
+            for (let feature of featureList) {
+
+                let chr = feature.chr;
+                // Translate to "official" name
+                if (genome) {
+                    chr = genome.getChromosomeName(chr);
+                }
+
+                let geneList = this.allFeatures[chr];
+                if (!geneList) {
+                    chromosomes.push(chr);
+                    geneList = [];
+                    this.allFeatures[chr] = geneList;
+                }
+                geneList.push(feature);
+            }
+
+
+            // Now build interval tree for each chromosome
+            for (let chr of chromosomes) {
+                const chrFeatures = this.allFeatures[chr];
+                chrFeatures.sort(function (f1, f2) {
+                    return (f1.start === f2.start ? 0 : (f1.start > f2.start ? 1 : -1));
+                });
+                treeMap[chr] = buildIntervalTree$1(chrFeatures);
+            }
+        }
+
+        return treeMap;
+    }
+}
+
+/**
+ * Build an interval tree from the feature list for fast interval based queries.   We lump features in groups
+ * of 10, or total size / 100,   to reduce size of the tree.
+ *
+ * @param featureList
+ */
+function buildIntervalTree$1(featureList) {
+
+    const tree = new IntervalTree();
+    const len = featureList.length;
+    const chunkSize = Math.max(10, Math.round(len / 10));
+
+    for (let i = 0; i < len; i += chunkSize) {
+        const e = Math.min(len, i + chunkSize);
+        const subArray = new IndexRange(i, e); //featureList.slice(i, e);
+        const iStart = featureList[i].start;
+        //
+        let iEnd = iStart;
+        for (let j = i; j < e; j++) {
+            iEnd = Math.max(iEnd, featureList[j].end);
+        }
+        tree.insert(iStart, iEnd, subArray);
+    }
+
+    return tree;
+}
+
+
+class IndexRange {
+    constructor(start, end) {
+        this.start = start;
+        this.end = end;
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2017 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const FeatureUtils = {
+
+    packFeatures: function (features, maxRows, sorted) {
+
+        var start;
+        var end;
+
+        if (!features) return;
+
+        maxRows = maxRows || 10000;
+
+        if (!sorted) {
+            features.sort(function (a, b) {
+                return a.start - b.start;
+            });
+        }
+
+
+        if (features.length === 0) {
+            return [];
+
+        } else {
+
+            var bucketList = [],
+                allocatedCount = 0,
+                lastAllocatedCount = 0,
+                nextStart,
+                row,
+                index,
+                bucket,
+                feature,
+                gap = 2,
+                bucketStart;
+
+            start = features[0].start;
+            end = features[features.length - 1].start;
+
+            bucketStart = Math.max(start, features[0].start);
+            nextStart = bucketStart;
+
+            features.forEach(function (alignment) {
+
+                var buckListIndex = Math.max(0, alignment.start - bucketStart);
+                if (bucketList[buckListIndex] === undefined) {
+                    bucketList[buckListIndex] = [];
+                }
+                bucketList[buckListIndex].push(alignment);
+            });
+
+
+            row = 0;
+
+
+            while (allocatedCount < features.length && row <= maxRows) {
+
+
+                while (nextStart <= end) {
+
+                    bucket = undefined;
+
+                    while (!bucket && nextStart <= end) {
+
+                        index = nextStart - bucketStart;
+                        if (bucketList[index] === undefined) {
+                            ++nextStart;                     // No buckets at this index
+                        } else {
+                            bucket = bucketList[index];
+                        }
+
+                    } // while (bucket)
+
+                    if (!bucket) {
+                        break;
+                    }
+                    feature = bucket.pop();
+                    if (0 === bucket.length) {
+                        bucketList[index] = undefined;
+                    }
+
+                    feature.row = row;
+
+                    nextStart = feature.end + gap;
+                    ++allocatedCount;
+
+                } // while (nextStart)
+
+                row++;
+                nextStart = bucketStart;
+
+                if (allocatedCount === lastAllocatedCount) break;   // Protect from infinite loops
+
+                lastAllocatedCount = allocatedCount;
+
+            } // while (allocatedCount)
+
+        }
+    },
+
+
+    /**
+     * Find features overlapping the given interval.  It is assumed that all features share the same chromosome.
+     *
+     * TODO -- significant overlap with FeatureCache, refactor to combine
+     *
+     * @param featureList
+     * @param start
+     * @param end
+     */
+    findOverlapping: function (featureList, start, end) {
+
+        if (!featureList || featureList.length === 0) {
+            return [];
+        } else {
+            const tree = buildIntervalTree(featureList);
+            const intervals = tree.findOverlapping(start, end);
+
+            if (intervals.length === 0) {
+                return [];
+            } else {
+                // Trim the list of features in the intervals to those
+                // overlapping the requested range.
+                // Assumption: features are sorted by start position
+
+                featureList = [];
+
+                intervals.forEach(function (interval) {
+                    const intervalFeatures = interval.value;
+                    const len = intervalFeatures.length;
+                    for (let i = 0; i < len; i++) {
+                        const feature = intervalFeatures[i];
+                        if (feature.start > end) break;
+                        else if (feature.end > start) {
+                            featureList.push(feature);
+                        }
+                    }
+                });
+
+                featureList.sort(function (a, b) {
+                    return a.start - b.start;
+                });
+
+                return featureList;
+            }
+        }
+
+    }
+};
+
+
+/**
+ * Build an interval tree from the feature list for fast interval based queries.   We lump features in groups
+ * of 10, or total size / 100,   to reduce size of the tree.
+ *
+ * @param featureList
+ */
+function buildIntervalTree(featureList) {
+
+    const tree = new IntervalTree();
+    const len = featureList.length;
+    const chunkSize = Math.max(10, Math.round(len / 100));
+
+    featureList.sort(function (f1, f2) {
+        return (f1.start === f2.start ? 0 : (f1.start > f2.start ? 1 : -1));
+    });
+
+    for (let i = 0; i < len; i += chunkSize) {
+        const e = Math.min(len, i + chunkSize);
+        const subArray = featureList.slice(i, e);
+        const iStart = subArray[0].start;
+        let iEnd = iStart;
+        subArray.forEach(function (feature) {
+            iEnd = Math.max(iEnd, feature.end);
+        });
+        tree.insert(iStart, iEnd, subArray);
+    }
+
+    return tree;
+}
+
+const appleCrayonRGBPalette =
+    {
+        cantaloupe: {r: 255, g: 206, b: 110},
+        honeydew: {r: 206, g: 250, b: 110},
+        spindrift: {r: 104, g: 251, b: 208},
+        sky: {r: 106, g: 207, b: 255},
+        lavender: {r: 210, g: 120, b: 255},
+        carnation: {r: 255, g: 127, b: 211},
+        licorice: {r: 0, g: 0, b: 0},
+        snow: {r: 255, g: 255, b: 255},
+        salmon: {r: 255, g: 114, b: 110},
+        banana: {r: 255, g: 251, b: 109},
+        flora: {r: 104, g: 249, b: 110},
+        ice: {r: 104, g: 253, b: 255},
+        orchid: {r: 110, g: 118, b: 255},
+        bubblegum: {r: 255, g: 122, b: 255},
+        lead: {r: 30, g: 30, b: 30},
+        mercury: {r: 232, g: 232, b: 232},
+        tangerine: {r: 255, g: 136, b: 2},
+        lime: {r: 131, g: 249, b: 2},
+        sea_foam: {r: 3, g: 249, b: 135},
+        aqua: {r: 0, g: 140, b: 255},
+        grape: {r: 137, g: 49, b: 255},
+        strawberry: {r: 255, g: 41, b: 135},
+        tungsten: {r: 58, g: 58, b: 58},
+        silver: {r: 208, g: 208, b: 208},
+        maraschino: {r: 255, g: 33, b: 1},
+        lemon: {r: 255, g: 250, b: 3},
+        spring: {r: 5, g: 248, b: 2},
+        turquoise: {r: 0, g: 253, b: 255},
+        blueberry: {r: 0, g: 46, b: 255},
+        magenta: {r: 255, g: 57, b: 255},
+        iron: {r: 84, g: 84, b: 83},
+        magnesium: {r: 184, g: 184, b: 184},
+        mocha: {r: 137, g: 72, b: 0},
+        fern: {r: 69, g: 132, b: 1},
+        moss: {r: 1, g: 132, b: 72},
+        ocean: {r: 0, g: 74, b: 136},
+        eggplant: {r: 73, g: 26, b: 136},
+        maroon: {r: 137, g: 22, b: 72},
+        steel: {r: 110, g: 110, b: 110},
+        aluminum: {r: 160, g: 159, b: 160},
+        cayenne: {r: 137, g: 17, b: 0},
+        aspargus: {r: 136, g: 133, b: 1},
+        clover: {r: 2, g: 132, b: 1},
+        teal: {r: 0, g: 134, b: 136},
+        midnight: {r: 0, g: 24, b: 136},
+        plum: {r: 137, g: 30, b: 136},
+        tin: {r: 135, g: 134, b: 135},
+        nickel: {r: 136, g: 135, b: 135}
+    };
+
+function appleCrayonRGB(name) {
+    const {r, g, b} = appleCrayonRGBPalette[name];
+    return `rgb(${r},${g},${b})`
+}
+
+function appleCrayonRGBA(name, alpha) {
+    const {r, g, b} = appleCrayonRGBPalette[name];
+    return `rgba(${r},${g},${b},${alpha})`
+}
+
+const colorPalettes = {
+
+    Set1:
+        [
+            "rgb(228,26,28)",
+            "rgb(55,126,184)",
+            "rgb(77,175,74)",
+            "rgb(166,86,40)",
+            "rgb(152,78,163)",
+            "rgb(255,127,0)",
+            "rgb(247,129,191)",
+            "rgb(153,153,153)",
+            "rgb(255,255,51)"
+        ],
+
+    Dark2:
+        [
+            "rgb(27,158,119)",
+            "rgb(217,95,2)",
+            "rgb(117,112,179)",
+            "rgb(231,41,138)",
+            "rgb(102,166,30)",
+            "rgb(230,171,2)",
+            "rgb(166,118,29)",
+            "rgb(102,102,102)"
+        ],
+
+    Set2:
+        [
+            "rgb(102, 194,165)",
+            "rgb(252,141,98)",
+            "rgb(141,160,203)",
+            "rgb(231,138,195)",
+            "rgb(166,216,84)",
+            "rgb(255,217,47)",
+            "rgb(229,196,148)",
+            "rgb(179,179,179)"
+        ],
+
+    Set3:
+        [
+            "rgb(141,211,199)",
+            "rgb(255,255,179)",
+            "rgb(190,186,218)",
+            "rgb(251,128,114)",
+            "rgb(128,177,211)",
+            "rgb(253,180,98)",
+            "rgb(179,222,105)",
+            "rgb(252,205,229)",
+            "rgb(217,217,217)",
+            "rgb(188,128,189)",
+            "rgb(204,235,197)",
+            "rgb(255,237,111)"
+        ],
+
+    Pastel1:
+        [
+            "rgb(251,180,174)",
+            "rgb(179,205,227)",
+            "rgb(204,235,197)",
+            "rgb(222,203,228)",
+            "rgb(254,217,166)",
+            "rgb(255,255,204)",
+            "rgb(229,216,189)",
+            "rgb(253,218,236)"
+        ],
+
+    Pastel2:
+        [
+            "rgb(173,226,207)",
+            "rgb(253,205,172)",
+            "rgb(203,213,232)",
+            "rgb(244,202,228)",
+            "rgb(230,245,201)",
+            "rgb(255,242,174)",
+            "rgb(243,225,206)"
+        ],
+
+    Accent:
+        [
+            "rgb(127,201,127)",
+            "rgb(190,174,212)",
+            "rgb(253,192,134)",
+            "rgb(255,255,153)",
+            "rgb(56,108,176)",
+            "rgb(240,2,127)",
+            "rgb(191,91,23)"
+        ]
+};
+
+class PaletteColorTable {
+
+    constructor(palette) {
+        this.colors = colorPalettes[palette];
+        if (!Array.isArray(this.colors)) this.colors = [];
+        this.colorTable = {};
+        this.nextIdx = 0;
+        this.colorGenerator = new RandomColorGenerator();
+    }
+
+    getColor(key) {
+        if (!this.colorTable.hasOwnProperty(key)) {
+            if (this.nextIdx < this.colors.length) {
+                this.colorTable[key] = this.colors[this.nextIdx];
+            } else {
+                this.colorTable[key] = this.colorGenerator.get();
+            }
+            this.nextIdx++;
+        }
+        return this.colorTable[key]
+    }
+}
+
+class ColorTable {
+    constructor(colors) {
+        this.colorTable = colors || {};
+        this.nextIdx = 0;
+        this.colorGenerator = new RandomColorGenerator();
+    }
+
+    getColor(key) {
+        if (!this.colorTable.hasOwnProperty(key)) {
+            if (this.colorTable.hasOwnProperty("*")) {
+                return this.colorTable["*"]
+            }
+            this.colorTable[key] = this.colorGenerator.get();
+        }
+        return this.colorTable[key]
+    }
+}
+
+// Random color generator from https://github.com/sterlingwes/RandomColor/blob/master/rcolor.js
+// Free to use & distribute under the MIT license
+// Wes Johnson (@SterlingWes)
+//
+// inspired by http://martin.ankerl.com/2009/12/09/how-to-create-random-colors-programmatically/
+function RandomColorGenerator() {
+    this.hue = Math.random();
+    this.goldenRatio = 0.618033988749895;
+    this.hexwidth = 2;
+}
+
+RandomColorGenerator.prototype.hsvToRgb = function (h, s, v) {
+    var h_i = Math.floor(h * 6),
+        f = h * 6 - h_i,
+        p = v * (1 - s),
+        q = v * (1 - f * s),
+        t = v * (1 - (1 - f) * s),
+        r = 255,
+        g = 255,
+        b = 255;
+    switch (h_i) {
+        case 0:
+            r = v, g = t, b = p;
+            break
+        case 1:
+            r = q, g = v, b = p;
+            break
+        case 2:
+            r = p, g = v, b = t;
+            break
+        case 3:
+            r = p, g = q, b = v;
+            break
+        case 4:
+            r = t, g = p, b = v;
+            break
+        case 5:
+            r = v, g = p, b = q;
+            break
+    }
+    return [Math.floor(r * 256), Math.floor(g * 256), Math.floor(b * 256)]
+};
+
+RandomColorGenerator.prototype.padHex = function (str) {
+    if (str.length > this.hexwidth) return str
+    return new Array(this.hexwidth - str.length + 1).join('0') + str
+};
+
+RandomColorGenerator.prototype.get = function (saturation, value) {
+    this.hue += this.goldenRatio;
+    this.hue %= 1;
+    if (typeof saturation !== "number") saturation = 0.5;
+    if (typeof value !== "number") value = 0.95;
+    var rgb = this.hsvToRgb(this.hue, saturation, value);
+
+    return "#" + this.padHex(rgb[0].toString(16))
+        + this.padHex(rgb[1].toString(16))
+        + this.padHex(rgb[2].toString(16))
+
+};
+
+new RandomColorGenerator();
+
+function randomRGB$1(min, max) {
+
+    min = IGVMath.clamp(min, 0, 255);
+    max = IGVMath.clamp(max, 0, 255);
+
+    const r = Math.round(Math.random() * (max - min) + min).toString(10);
+    const g = Math.round(Math.random() * (max - min) + min).toString(10);
+    const b = Math.round(Math.random() * (max - min) + min).toString(10);
+    return `rgb(${r},${g},${b})`
+
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of ctx software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and ctx permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+const IGVGraphics = {
+
+    configureHighDPICanvas: function (ctx, w, h) {
+
+        const scaleFactor = window.devicePixelRatio;
+        // const scaleFactor = 1
+
+        ctx.canvas.style.width = (`${w}px`);
+        ctx.canvas.width = Math.floor(scaleFactor * w);
+
+        ctx.canvas.style.height = (`${h}px`);
+        ctx.canvas.height = Math.floor(scaleFactor * h);
+
+        ctx.scale(scaleFactor, scaleFactor);
+
+    },
+
+    setProperties: function (ctx, properties) {
+
+        for (var key in properties) {
+            if (properties.hasOwnProperty(key)) {
+                var value = properties[key];
+                ctx[key] = value;
+            }
+        }
+    },
+
+    strokeLine: function (ctx, x1, y1, x2, y2, properties) {
+
+        x1 = Math.floor(x1) + 0.5;
+        y1 = Math.floor(y1) + 0.5;
+        x2 = Math.floor(x2) + 0.5;
+        y2 = Math.floor(y2) + 0.5;
+
+        if (properties) {
+            ctx.save();
+            IGVGraphics.setProperties(ctx, properties);
+        }
+
+        ctx.beginPath();
+        ctx.moveTo(x1, y1);
+        ctx.lineTo(x2, y2);
+        ctx.stroke();
+
+        if (properties) ctx.restore();
+    },
+
+    fillRect: function (ctx, x, y, w, h, properties) {
+        x = Math.round(x);
+        y = Math.round(y);
+
+        if (properties) {
+            ctx.save();
+            IGVGraphics.setProperties(ctx, properties);
+        }
+
+        ctx.fillRect(x, y, w, h);
+
+        if (properties) ctx.restore();
+    },
+
+    fillPolygon: function (ctx, x, y, properties) {
+        if (properties) {
+            ctx.save();
+            IGVGraphics.setProperties(ctx, properties);
+        }
+        doPath(ctx, x, y);
+        ctx.fill();
+        if (properties) ctx.restore();
+    },
+
+    strokePolygon: function (ctx, x, y, properties) {
+        if (properties) {
+            ctx.save();
+            IGVGraphics.setProperties(ctx, properties);
+        }
+        doPath(ctx, x, y);
+        ctx.stroke();
+        if (properties) ctx.restore();
+    },
+
+    fillText: function (ctx, text, x, y, properties, transforms) {
+
+        if (properties || transforms) {
+            ctx.save();
+        }
+
+        if (properties) {
+            IGVGraphics.setProperties(ctx, properties);
+        }
+
+        if (transforms) {
+            // Slow path with context saving and extra translate
+            ctx.translate(x, y);
+
+            for (var transform in transforms) {
+                var value = transforms[transform];
+
+                // TODO: Add error checking for robustness
+                if (transform === 'translate') {
+                    ctx.translate(value['x'], value['y']);
+                }
+                if (transform === 'rotate') {
+                    ctx.rotate(value['angle'] * Math.PI / 180);
+                }
+            }
+
+            ctx.fillText(text, 0, 0);
+        } else {
+            ctx.fillText(text, x, y);
+        }
+
+        if (properties || transforms) ctx.restore();
+    },
+
+    strokeText: function (ctx, text, x, y, properties, transforms) {
+
+
+        if (properties || transforms) {
+            ctx.save();
+        }
+
+        if (properties) {
+            IGVGraphics.setProperties(ctx, properties);
+        }
+
+        if (transforms) {
+            ctx.translate(x, y);
+
+            for (var transform in transforms) {
+                var value = transforms[transform];
+
+                // TODO: Add error checking for robustness
+                if (transform === 'translate') {
+                    ctx.translate(value['x'], value['y']);
+                }
+                if (transform === 'rotate') {
+                    ctx.rotate(value['angle'] * Math.PI / 180);
+                }
+            }
+
+            ctx.strokeText(text, 0, 0);
+        } else {
+            ctx.strokeText(text, x, y);
+        }
+
+        if (properties || transforms) ctx.restore();
+    },
+
+    strokeCircle: function (ctx, x, y, radius, properties) {
+        if (properties) {
+            ctx.save();
+            IGVGraphics.setProperties(ctx, properties);
+        }
+        ctx.beginPath();
+        ctx.arc(x, y, radius, 0, 2 * Math.PI);
+        ctx.stroke();
+        if (properties) ctx.restore();
+    },
+
+    fillCircle: function (ctx, x, y, radius, properties) {
+        if (properties) {
+            ctx.save();
+            IGVGraphics.setProperties(ctx, properties);
+        }
+        ctx.beginPath();
+        ctx.arc(x, y, radius, 0, 2 * Math.PI);
+        ctx.fill();
+        if (properties) ctx.restore();
+    },
+
+    drawArrowhead: function (ctx, x, y, size, lineWidth) {
+
+        ctx.save();
+        if (!size) {
+            size = 5;
+        }
+        if (lineWidth) {
+            ctx.lineWidth = lineWidth;
+        }
+        ctx.beginPath();
+        ctx.moveTo(x, y - size / 2);
+        ctx.lineTo(x, y + size / 2);
+        ctx.lineTo(x + size, y);
+        ctx.lineTo(x, y - size / 2);
+        ctx.closePath();
+        ctx.fill();
+        ctx.restore();
+    },
+
+    dashedLine: function (ctx, x1, y1, x2, y2, dashLen, properties = {}) {
+        if (dashLen === undefined) dashLen = 2;
+        ctx.setLineDash([dashLen, dashLen]);
+        IGVGraphics.strokeLine(ctx, x1, y1, x2, y2, properties);
+        ctx.setLineDash([]);
+    },
+
+    roundRect: function (ctx, x, y, width, height, radius, fill, stroke) {
+
+        if (typeof stroke == "undefined") {
+            stroke = true;
+        }
+        if (typeof radius === "undefined") {
+            radius = 5;
+        }
+        ctx.beginPath();
+        ctx.moveTo(x + radius, y);
+        ctx.lineTo(x + width - radius, y);
+        ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
+        ctx.lineTo(x + width, y + height - radius);
+        ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
+        ctx.lineTo(x + radius, y + height);
+        ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
+        ctx.lineTo(x, y + radius);
+        ctx.quadraticCurveTo(x, y, x + radius, y);
+        ctx.closePath();
+        if (stroke) {
+            ctx.stroke();
+        }
+        if (fill) {
+            ctx.fill();
+        }
+    },
+    polygon: function (ctx, x, y, fill, stroke) {
+
+        if (typeof stroke == "undefined") {
+            stroke = true;
+        }
+
+        ctx.beginPath();
+        var len = x.length;
+        ctx.moveTo(x[0], y[0]);
+        for (var i = 1; i < len; i++) {
+            ctx.lineTo(x[i], y[i]);
+            // this.moveTo(x[i], y[i]);
+        }
+
+        ctx.closePath();
+        if (stroke) {
+            ctx.stroke();
+        }
+        if (fill) {
+            ctx.fill();
+        }
+    },
+
+    drawRandomColorVerticalLines: ctx => {
+        for (let x = 0; x < ctx.canvas.width; x++) {
+            IGVGraphics.fillRect(ctx, x, 0, 1, ctx.canvas.height, { fillStyle: randomRGB$1(100, 250) });
+        }
+    },
+
+    labelTransformWithContext: (ctx, exe) => {
+        ctx.translate(exe, 0);
+        ctx.scale(-1, 1);
+        ctx.translate(-exe, 0);
+    }
+
+};
+
+function doPath(ctx, x, y) {
+
+
+    var i, len = x.length;
+    for (i = 0; i < len; i++) {
+        x[i] = Math.round(x[i]);
+        y[i] = Math.round(y[i]);
+    }
+
+    ctx.beginPath();
+    ctx.moveTo(x[0], y[0]);
+    for (i = 1; i < len; i++) {
+        ctx.lineTo(x[i], y[i]);
+    }
+    ctx.closePath();
+}
+
+class Alert {
+    constructor(parent) {
+        this.dialog = new AlertDialog(parent);
+
+    }
+
+    present(alert, callback) {
+        this.dialog.present(alert, callback);
+    }
+}
+
+const FileFormats = {
+
+    gwascatalog: {
+        fields: [
+            'bin',
+            'chr',
+            'start',
+            'end',
+            'name',
+            'pubMedID',
+            'author',
+            'pubDate',
+            'journal',
+            'title',
+            'trait',
+            'initSample',
+            'replSample',
+            'region',
+            'genes',
+            'riskAllele',
+            'riskAlFreq',
+            'pValue',
+            'pValueDesc',
+            'orOrBeta',
+            'ci95',
+            'platform',
+            'cnv'
+        ]
+    },
+
+    wgrna: {
+        fields:
+            [
+                'bin',
+                'chr',
+                'start',
+                'end',
+                'name',
+                'score',
+                'strand',
+                'thickStart',
+                'thickEnd',
+                'type'
+            ]
+    },
+
+    cpgislandext: {
+        fields:
+
+            [
+                'bin',
+                'chr',
+                'start',
+                'end',
+                'name',
+                'length',
+                'cpgNum',
+                'gcNum',
+                'perCpg',
+                'perGc',
+                'obsExp'
+            ]
+    },
+
+    clinVarMain: {
+        fields: [
+            'chr1',
+            'start',
+            'end',
+            'name',
+            'score',
+            'strand',
+            'thickStart',
+            'thickEnd',
+            'reserved',
+            'blockCount',  // Number of blocks
+            'blockSizes',  // Comma separated list of block sizes
+            'chromStarts', // Start positions relative to chromStart
+            'origName',    // NM_198053.2(CD247):c.462C>T (p.Asp154=)	ClinVar Variation Report
+            'clinSign',    // Likely benign	Clinical significance
+            'reviewStatus', // 	based on: criteria provided,single submitter	Review Status
+            'type',         // single nucleotide variant	Type of Variant
+            'geneId', 	    // CD247	Gene Symbol
+            'snpId',       //	181656780	dbSNP ID
+            'nsvId',       //		dbVar ID
+            'rcvAcc',      //	RCV000642347	ClinVar Allele Submission
+            'testedInGtr', //	N	Genetic Testing Registry
+            'phenotypeList', //	Immunodeficiency due to defect in cd3-zeta	Phenotypes
+            'phenotype', //	MedGen:C1857798, OMIM:610163	Phenotype identifiers
+            'origin', //	germline	Data origin
+            'assembly', //	GRCh37	Genome assembly
+            'cytogenetic', //	1q24.2	Cytogenetic status
+            'hgvsCod', //	NM_198053.2:c.462C>T	Nucleotide HGVS
+            'hgvsProt', //	NP_932170.1:p.Asp154=	Protein HGVS
+            'numSubmit', //	1	Number of submitters
+            'lastEval', //	Dec 19,2017	Last evaluation
+            'guidelines', //		Guidelines
+            'otherIds'
+        ]
+    }
+};
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * Test if the given value is a string or number.  Not using typeof as it fails on boxed primitives.
+ *
+ * @param value
+ * @returns boolean
+ */
+
+function isSimpleType(value) {
+    const simpleTypes = new Set(["boolean", "number", "string", "symbol"]);
+    const valueType = typeof value;
+    return (value !== undefined && (simpleTypes.has(valueType) || value.substring || value.toFixed))
+}
+
+function buildOptions(config, options) {
+
+    var defaultOptions = {
+        oauthToken: config.oauthToken,
+        headers: config.headers,
+        withCredentials: config.withCredentials,
+        filename: config.filename
+    };
+
+    return Object.assign(defaultOptions, options)
+}
+
+/**
+ * isMobile test from http://detectmobilebrowsers.com
+ * TODO -- improve UI design so this isn't neccessary
+ * @returns {boolean}
+ */
+
+// igv.isMobile = function () {
+//
+//     const a = (navigator.userAgent || navigator.vendor || window.opera);
+//     return (/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(a) ||
+//         /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0, 4)))
+//
+// }
+
+const doAutoscale = function (features) {
+    var min, max;
+
+    if (features && features.length > 0) {
+        min = Number.MAX_VALUE;
+        max = -Number.MAX_VALUE;
+
+        for(let f of features) {
+            if (!Number.isNaN(f.value)) {
+                min = Math.min(min, f.value);
+                max = Math.max(max, f.value);
+            }
+        }
+
+        // Insure we have a zero baseline
+        if (max > 0) min = Math.min(0, min);
+        if (max < 0) max = 0;
+    } else {
+        // No features -- default
+        min = 0;
+        max = 100;
+    }
+
+    return {min: min, max: max}
+};
+
+const validateGenomicExtent = function (chromosomeLengthBP, genomicExtent, minimumBP) {
+
+    let ss = genomicExtent.start;
+    let ee = genomicExtent.end;
+
+    if (undefined === ee) {
+
+        ss -= minimumBP / 2;
+        ee = ss + minimumBP;
+
+        if (ee > chromosomeLengthBP) {
+            ee = chromosomeLengthBP;
+            ss = ee - minimumBP;
+        } else if (ss < 0) {
+            ss = 0;
+            ee = minimumBP;
+        }
+
+    } else if (ee - ss < minimumBP) {
+
+        const center = (ee + ss) / 2;
+
+        if (center - minimumBP / 2 < 0) {
+            ss = 0;
+            ee = ss + minimumBP;
+        } else if (center + minimumBP / 2 > chromosomeLengthBP) {
+            ee = chromosomeLengthBP;
+            ss = ee - minimumBP;
+        } else {
+            ss = center - minimumBP / 2;
+            ee = ss + minimumBP;
+        }
+    }
+
+    genomicExtent.start = Math.ceil(ss);
+    genomicExtent.end = Math.floor(ee);
+};
+
+/*!
+ * is-number <https://github.com/jonschlinkert/is-number>
+ *
+ * Copyright (c) 2014-present, Jon Schlinkert.
+ * Released under the MIT License.
+ */
+
+const isNumber = function (num) {
+    if (typeof num === 'number') {
+        return num - num === 0
+    }
+    if (typeof num === 'string' && num.trim() !== '') {
+        return Number.isFinite ? Number.isFinite(+num) : isFinite(+num)
+    }
+    return false
+};
+
+async function getFilename$1(url) {
+    if (isString$2(url) && url.startsWith("https://drive.google.com")) {
+        // This will fail if Google API key is not defined
+        if (getApiKey() === undefined) {
+            throw Error("Google drive is referenced, but API key is not defined.  An API key is required for Google Drive access")
+        }
+        const json = await getDriveFileInfo(url);
+        return json.originalFileName || json.name
+    } else {
+        return getFilename$2(url)
+    }
+}
+
+function prettyBasePairNumber(raw) {
+
+    var denom,
+        units,
+        value,
+        floored;
+
+    if (raw > 1e7) {
+        denom = 1e6;
+        units = " mb";
+    } else if (raw > 1e4) {
+
+        denom = 1e3;
+        units = " kb";
+
+        value = raw / denom;
+        floored = Math.floor(value);
+        return numberFormatter$1(floored) + units
+    } else {
+        return numberFormatter$1(raw) + " bp"
+    }
+
+    value = raw / denom;
+    floored = Math.floor(value);
+
+    return floored.toString() + units
+}
+
+
+function isDataURL(obj) {
+    return (isString$2(obj) && obj.startsWith("data:"))
+}
+
+function createColumn(columnContainer, className) {
+    const column = domUtils.div({class: className});
+    columnContainer.appendChild(column);
+}
+
+
+function insertElementBefore(element, referenceNode) {
+    referenceNode.parentNode.insertBefore(element, referenceNode);
+}
+
+function insertElementAfter(element, referenceNode) {
+    referenceNode.parentNode.insertBefore(element, referenceNode.nextSibling);
+}
+
+/**
+ * Test to see if page is loaded in a secure context, that is by https or is localhost.
+ */
+function isSecureContext() {
+    return window.location.protocol === "https:" || window.location.hostname === "localhost"
+}
+
+// reference: https://pretagteam.com/question/find-element-height-including-margin
+function getElementAbsoluteHeight(element) {
+
+    // Get the DOM Node if you pass in a string
+    element = (typeof element === 'string') ? document.querySelector(element) : element;
+
+    const styles = window.getComputedStyle(element);
+    const margin = parseFloat(styles['marginTop']) + parseFloat(styles['marginBottom']);
+    const height = element.offsetHeight;
+
+    return Math.ceil(margin + height);
+}
+
+/**
+ * Decoder for bedpe records.
+ *
+ * Bedpe format was created by Aaron Quinlan et al as part of the bedtools project.
+ * The spec is here:  https://bedtools.readthedocs.io/en/latest/content/general-usage.html,
+ *
+ * 1      2      3    4      5      6    7    8     9       10      11-
+ * chrom1 start1 end1 chrom2 start2 end2 name score strand1 strand2 <Any number of additional, user-defined fields>
+ *
+ * However there are off spec variants, an important one being a 7 column format with score in place of the standard
+ * name column.
+ *
+ * A common variant is a "hiccups" output file, which is standard bedpe with the exception of a header line
+ * of the form
+ *
+ * chr1    x1    x2    chr2    y1    y2    name    score    strand1    strand2    color    observed    expectedBL    expectedDonut    expectedH    expectedV    fdrBL    fdrDonut    fdrH    fdrV
+ *
+ * The "hiccups" output is apparently not standardized as this is found at ENCODE, with a non-helpful "tsv" extension
+ *
+ * chr1    x1    x2    chr2    y1    y2    color    observed    expectedBL    expectedDonut    expectedH    expectedV    fdrBL    fdrDonut    fdrH    fdrV    numCollapsed    centroid1    centroid2    radius
+ * chr9    136790000    136795000    chr9    136990000    136995000    0,255,255    101.0    31.100368    38.40316    56.948116    34.040756    1.1876738E-13    1.05936405E-13    2.5148233E-4    1.7220993E-13    1    136792500    136992500    25590
+ *
+ * The "hiccups" documentation specfies yet another set of column headers
+ * chromosome1    x1    x2    chromosome2    y1    y2    color    observed expected_bottom_left    expected_donut    expected_horizontal    expected_vertical fdr_bottom_left    fdr_donut    fdr_horizontal    fdr_vertical number_collapsed    centroid1    centroid2    radius
+ *
+ * @param tokens
+ * @param ignore
+ * @returns {{start1: number, end2: number, end1: number, chr1: *, chr2: *, start2: number}|undefined}
+ */
+
+function decodeBedpe(tokens, header) {
+
+    if (tokens.length < 6) {
+        console.log("Skipping line: " + tokens.join(' '));
+        return undefined
+    }
+
+    var feature = {
+        chr1: tokens[0],
+        start1: Number.parseInt(tokens[1]),
+        end1: Number.parseInt(tokens[2]),
+        chr2: tokens[3],
+        start2: Number.parseInt(tokens[4]),
+        end2: Number.parseInt(tokens[5])
+    };
+
+    if (isNaN(feature.start1) || isNaN(feature.end1) || isNaN(feature.start2) || isNaN(feature.end2)) {
+        //throw Error(`Error parsing line: ${tokens.join('\t')}`);
+        return undefined
+    }
+
+    // Determine if this is a "hiccups" file.  Store result on "header" so it doesn't need repeated for every feature
+    if(header && header.hiccups === undefined) {
+        header.hiccups = header.columnNames ? isHiccups(header.columnNames) : false;
+    }
+    const hiccups = header && header.hiccups;
+    const stdColumns = hiccups ? 6 : 10;
+
+    if(!hiccups) {
+        if (tokens.length > 6 && tokens[6] !== ".") {
+            feature.name = tokens[6];
+        }
+
+        if (tokens.length > 7 && tokens[7] !== ".") {
+            feature.score = Number(tokens[7]);
+        }
+
+        if (tokens.length > 8 && tokens[8] !== ".") {
+            feature.strand1 = tokens[8];
+        }
+
+        if (tokens.length > 9 && tokens[9] !== ".") {
+            feature.strand2 = tokens[9];
+        }
+    }
+
+    // Optional extra columns
+    if (header) {
+        const colorColumn = header.colorColumn;
+        if (colorColumn && colorColumn < tokens.length) {
+            feature.color = IGVColor.createColorString(tokens[colorColumn]);
+        }
+        const thicknessColumn = header.thicknessColumn;
+        if (thicknessColumn && thicknessColumn < tokens.length) {
+            feature.thickness = tokens[thicknessColumn];
+        }
+
+        if (tokens.length > stdColumns && header.columnNames && header.columnNames.length === tokens.length) {
+            feature.extras = tokens.slice(stdColumns);
+        }
+    }
+
+
+    // Set total extent of feature
+    if (feature.chr1 === feature.chr2) {
+        feature.chr = feature.chr1;
+        feature.start = Math.min(feature.start1, feature.start2);
+        feature.end = Math.max(feature.end1, feature.end2);
+
+    }
+    return feature
+}
+
+/**
+ * Hack for non-standard bedPE formats, where numeric score can be in column 7 (name field from spec)
+ * @param features
+ */
+function fixBedPE(features) {
+
+    if (features.length == 0) return
+
+    // Assume all features have same properties
+    const firstFeature = features[0];
+    if (firstFeature.score === undefined && firstFeature.name !== undefined) {
+        // Name field (col 7) is sometimes used for score.
+        for (let f of features) {
+            if (!(isNumber(f.name) || f.name === '.')) return
+        }
+        for (let f of features) {
+            f.score = Number(f.name);
+            delete f.name;
+        }
+    }
+
+    // Make copies of inter-chr features, one for each chromosome
+    const interChrFeatures = features.filter(f => f.chr1 !== f.chr2);
+    for (let f1 of interChrFeatures) {
+        const f2 = Object.assign({}, f1);
+        f2.dup = true;
+        features.push(f2);
+
+        f1.chr = f1.chr1;
+        f1.start = f1.start1;
+        f1.end = f1.end1;
+
+        f2.chr = f2.chr2;
+        f2.start = f2.start2;
+        f2.end = f2.end2;
+    }
+}
+
+
+/**
+ * Special decoder for Hic Domain files.   In these files feature1 == feature2, they are really bed records.
+ * @param tokens
+ * @param ignore
+ * @returns {*}
+ */
+function decodeBedpeDomain(tokens, header) {
+
+    if (tokens.length < 8) return undefined
+
+    return {
+        chr: tokens[0],
+        start: Number.parseInt(tokens[1]),
+        end: Number.parseInt(tokens[2]),
+        color: IGVColor.createColorString(tokens[6]),
+        value: Number(tokens[7])
+    }
+}
+
+function isHiccups(columns) {
+    return columns && (columns.includes("fdrDonut") || columns.includes("fdr_donut"))
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const knownFileExtensions = new Set([
+
+    "narrowpeak",
+    "broadpeak",
+    "regionpeak",
+    "peaks",
+    "bedgraph",
+    "wig",
+    "gff3",
+    "gff",
+    "gtf",
+    "fusionjuncspan",
+    "refflat",
+    "seg",
+    "aed",
+    "bed",
+    "vcf",
+    "bb",
+    "bigbed",
+    "biginteract",
+    "biggenepred",
+    "bignarrowpeak",
+    "bw",
+    "bigwig",
+    "bam",
+    "tdf",
+    "refgene",
+    "genepred",
+    "genepredext",
+    "bedpe",
+    "bp",
+    "snp",
+    "rmsk",
+    "cram",
+    "gwas",
+    "maf",
+    "mut",
+    "tsv",
+    "hiccups",
+    "fasta",
+    "fa",
+    "fna",
+    "pytor"
+]);
+
+/**
+ * Return a custom format object with the given name.
+ * @param name
+ * @returns {*}
+ */
+function getFormat(name) {
+
+    if (FileFormats && FileFormats[name]) {
+        return expandFormat(FileFormats[name])
+    } else {
+        return undefined
+    }
+
+    function expandFormat(format) {
+
+        const fields = format.fields;
+        const keys = ['chr', 'start', 'end'];
+
+        for (let i = 0; i < fields.length; i++) {
+            for (let key of keys) {
+                if (key === fields[i]) {
+                    format[key] = i;
+                }
+            }
+        }
+
+        return format
+    }
+}
+
+function inferFileFormat(fn) {
+
+    var idx, ext;
+
+    fn = fn.toLowerCase();
+
+    // Special case -- UCSC refgene files
+    if (fn.endsWith("refgene.txt.gz") ||
+        fn.endsWith("refgene.txt.bgz") ||
+        fn.endsWith("refgene.txt") ||
+        fn.endsWith("refgene.sorted.txt.gz") ||
+        fn.endsWith("refgene.sorted.txt.bgz")) {
+        return "refgene"
+    }
+
+
+    //Strip parameters -- handle local files later
+    idx = fn.indexOf("?");
+    if (idx > 0) {
+        fn = fn.substr(0, idx);
+    }
+
+    //Strip aux extensions .gz, .tab, and .txt
+    if (fn.endsWith(".gz")) {
+        fn = fn.substr(0, fn.length - 3);
+    }
+
+    if (fn.endsWith(".txt") || fn.endsWith(".tab") || fn.endsWith(".bgz")) {
+        fn = fn.substr(0, fn.length - 4);
+    }
+
+
+    idx = fn.lastIndexOf(".");
+    ext = idx < 0 ? fn : fn.substr(idx + 1);
+
+    switch (ext) {
+        case "bw":
+            return "bigwig"
+        case "bb":
+            return "bigbed"
+        case "fasta":
+        case "fa":
+        case "fna":
+            return "fasta"
+        default:
+            if (knownFileExtensions.has(ext)) {
+                return ext
+            } else {
+                return undefined
+            }
+
+    }
+
+}
+
+function inferIndexPath(url, extension) {
+
+    if (isString$2(url)) {
+        if (url.includes("?")) {
+            const idx = url.indexOf("?");
+            return url.substring(0, idx) + "." + extension + url.substring(idx)
+        } else {
+            return url + "." + extension
+        }
+    } else {
+        return undefined
+    }
+}
+
+
+function inferTrackType(config) {
+
+    translateDeprecatedTypes(config);
+
+    if (config.type) {
+        return config.type
+    }
+
+    if (config.format) {
+        const format = config.format.toLowerCase();
+        switch (format) {
+            case "bw":
+            case "bigwig":
+            case "wig":
+            case "bedgraph":
+            case "tdf":
+                return "wig"
+            case "vcf":
+                return "variant"
+            case "seg":
+                return "seg"
+            case "mut":
+            case "maf":
+                return "mut"
+            case "bam":
+            case "cram":
+                return "alignment"
+            case "hiccups":
+            case "bedpe":
+            case "bedpe-loop":
+            case "biginteract":
+                return "interact"
+            case "bp":
+                return "arc"
+            case "gwas":
+                return "gwas"
+            case "bed":
+            case "bigbed":
+            case "bb":
+            case "biggenepred":
+            case "bignarrowpeak":
+                return "bedtype"
+            case "fasta":
+                return "sequence"
+            case "pytor":
+                return "cnvpytor"
+            default:
+                return "annotation"
+        }
+    }
+}
+
+function translateDeprecatedTypes(config) {
+
+    if (config.featureType) {  // Translate deprecated "feature" type
+        config.type = config.type || config.featureType;
+        config.featureType = undefined;
+    }
+    if ("junctions" === config.type) {
+        config.type = "junction";
+    } else if ("bed" === config.type) {
+        config.type = "annotation";
+        config.format = config.format || "bed";
+    } else if ("annotations" === config.type) {
+        config.type = "annotation";
+    } else if ("alignments" === config.type) {
+        config.type = "alignment";
+    } else if ("bam" === config.type) {
+        config.type = "alignment";
+        config.format = "bam";
+    } else if ("vcf" === config.type) {
+        config.type = "variant";
+        config.format = "vcf";
+    } else if ("t2d" === config.type) {
+        config.type = "gwas";
+    } else if ("FusionJuncSpan" === config.type && !config.format) {
+        config.format = "fusionjuncspan";
+    } else if ("aed" === config.type) {
+        config.type = "annotation";
+        config.format = config.format || "aed";
+    }
+}
+
+/**
+ * Attempt to infer the file format by reading a few lines from the header.  Currently this only supports "tsv" extensions,
+ * it was added specifically for "hiccups" type tsv files in ENCODE.  Might be expanded in the future.
+ *
+ * @param url
+ * @returns {Promise<void>}
+ */
+async function inferFileFormatFromHeader(config) {
+
+    if (config.url) {
+        const firstBytes = await igvxhr.loadString(config.url, buildOptions(config, {range: {start: 0, size: 1000}}));
+        if(firstBytes) {
+            const columnNames = firstBytes.split('\n')[0].split('\t');
+            if(isHiccups(columnNames)) {
+                return "hiccups"
+            }
+        }
+    }
+
+    return undefined
+
+}
+
+function registerFileFormats(name, fields) {
+    FileFormats[name] = {fields: fields};
+}
+
+var TrackUtils = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    knownFileExtensions: knownFileExtensions,
+    getFormat: getFormat,
+    inferFileFormat: inferFileFormat,
+    inferFileFormatFromHeader: inferFileFormatFromHeader,
+    inferTrackType: inferTrackType,
+    inferIndexPath: inferIndexPath,
+    registerFileFormats: registerFileFormats
+});
+
+const pairs =
+    [
+        ['A', 'T'],
+        ['G', 'C'],
+        ['Y', 'R'],
+        ['W', 'S'],
+        ['K', 'M'],
+        ['D', 'H'],
+        ['B', 'V']
+    ];
+
+const complements = new Map();
+for (let p of pairs) {
+    const p1 = p[0];
+    const p2 = p[1];
+    complements.set(p1, p2);
+    complements.set(p2, p1);
+    complements.set(p1.toLowerCase(), p2.toLowerCase());
+    complements.set(p2.toLowerCase(), p1.toLowerCase());
+}
+
+function reverseComplementSequence(sequence) {
+
+    let comp = '';
+    let idx = sequence.length;
+    while (idx-- > 0) {
+        const base = sequence[idx];
+        comp += complements.has(base) ? complements.get(base) : base;
+    }
+    return comp
+}
+
+class Chromosome {
+    constructor(name, order, bpLength) {
+        this.name = name;
+        this.order = order;
+        this.bpLength = bpLength;
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const splitLines$4 = splitLines$5;
+
+const reservedProperties$1 = new Set(['fastaURL', 'indexURL', 'cytobandURL', 'indexed']);
+
+class NonIndexedFasta {
+
+
+    constructor(reference) {
+
+        this.fastaURL = reference.fastaURL;
+        this.withCredentials = reference.withCredentials;
+        this.chromosomeNames = [];
+        this.chromosomes = {};
+        this.sequences = new Map();
+
+        // Build a track-like config object from the referenceObject
+        const config = {};
+        for (let key in reference) {
+            if (reference.hasOwnProperty(key) && !reservedProperties$1.has(key)) {
+                config[key] = reference[key];
+            }
+        }
+        this.config = config;
+    }
+
+
+    async init() {
+        return this.loadAll()
+    }
+
+    async getSequence(chr, start, end) {
+
+        if (!this.sequences.has(chr)) {
+            return undefined
+        }
+
+        let seqSlice = this.sequences.get(chr).find(ss => ss.contains(start, end));
+        if (!seqSlice) {
+            seqSlice = this.sequences.get(chr).find(ss => ss.overlaps(start, end));
+            if (!seqSlice) {
+                return undefined
+            }
+        }
+
+        start -= seqSlice.offset;
+        end -= seqSlice.offset;
+
+        let prefix = "";
+        if (start < 0) {
+            for (let i = start; i < Math.min(end, 0); i++) {
+                prefix += "*";
+            }
+        }
+
+        if (end <= 0) {
+            return Promise.resolve(prefix)
+        }
+
+        const seq = seqSlice.sequence;
+        const seqEnd = Math.min(end, seq.length);
+        return prefix + seq.substring(start, seqEnd)
+    }
+
+    async loadAll() {
+
+        let data;
+        if (isDataURL(this.fastaURL)) {
+            let bytes = decodeDataURI$1(this.fastaURL);
+            data = "";
+            for (let b of bytes) {
+                data += String.fromCharCode(b);
+            }
+        } else {
+            data = await igvxhr.load(this.fastaURL, buildOptions(this.config));
+        }
+
+        const chrNameSet = new Set();
+        const lines = splitLines$4(data);
+        const len = lines.length;
+        let lineNo = 0;
+        let order = 0;
+        let nextLine;
+        let current = {};
+        while (lineNo < len) {
+            nextLine = lines[lineNo++].trim();
+            if (nextLine.startsWith("#") || nextLine.length === 0) ; else if (nextLine.startsWith(">")) {
+                // Start the next sequence
+                if(current && current.seq) {
+                    pushChromosome.call(this, current, order++);
+                }
+
+                const parts = nextLine.substr(1).split(/\s+/);
+
+                // Check for samtools style locus string.   This is not perfect, and could fail on weird sequence names
+                const nameParts = parts[0].split(':');
+                current.chr = nameParts[0];
+                current.seq = "";
+                current.offset = 0;
+                if (nameParts.length > 1 && nameParts[1].indexOf('-') > 0) {
+                    const locusParts = nameParts[1].split('-');
+                    if (locusParts.length === 2 &&
+                        /^[0-9]+$/.test(locusParts[0]) &&
+                        /^[0-9]+$/.test(locusParts[1])) ;
+                    const from = Number.parseInt(locusParts[0]);
+                    const to = Number.parseInt(locusParts[1]);
+                    if (to > from) {   // TODO this should be an error
+                        current.offset = from - 1;
+                    }
+
+                    // Check for chromosome length token
+                    if (parts.length > 1 && parts[1].startsWith("@len=")) {
+                        try {
+                            current.length = parseInt(parts[1].trim().substring(5));
+                        } catch (e) {
+                            current.length = undefined;
+                            console.error(`Error parsing sequence length for ${nextLine}`);
+                        }
+                    } else {
+                        current.length = undefined;
+                    }
+                }
+            } else {
+                current.seq += nextLine;
+            }
+            // add last seq
+            if (current && current.seq) {
+                pushChromosome.call(this, current, order);
+            }
+        }
+
+        function pushChromosome(current, order) {
+            const length = current.length || (current.offset + current.seq.length);
+            if (!chrNameSet.has(current.chr)) {
+                this.chromosomeNames.push(current.chr);
+                this.sequences.set(current.chr, []);
+                this.chromosomes[current.chr] = new Chromosome(current.chr, order, length);
+                chrNameSet.add(current.chr);
+            } else {
+                const c = this.chromosomes[current.chr];
+                c.bpLength = Math.max(c.bpLength, length);
+            }
+            this.sequences.get(current.chr).push(new SequenceSlice(current.offset, current.seq));
+        }
+    }
+}
+
+class SequenceSlice {
+
+    constructor(offset, sequence) {
+        this.offset = offset;
+        this.sequence = sequence;
+    }
+
+    contains(start, end) {
+        return this.offset <= start && this.end >= end
+    }
+
+    overlaps(start, end) {
+        return this.offset < end && this.end > start
+    }
+
+    get end() {
+        return this.offset + this.sequence.length
+    }
+
+}
+
+const GenomicInterval = function (chr, start, end, features) {
+    this.chr = chr;
+    this.start = start;
+    this.end = end;
+    this.features = features;
+};
+
+GenomicInterval.prototype.contains = function (chr, start, end) {
+    return this.chr === chr &&
+        this.start <= start &&
+        this.end >= end
+};
+
+GenomicInterval.prototype.containsRange = function (range) {
+    return this.chr === range.chr &&
+        this.start <= range.start &&
+        this.end >= range.end
+};
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const splitLines$3 = splitLines$5;
+
+const reservedProperties = new Set(['fastaURL', 'indexURL', 'compressedIndexURL', 'cytobandURL', 'indexed']);
+
+class FastaSequence {
+
+    constructor(reference) {
+
+        this.file = reference.fastaURL;
+        this.indexFile = reference.indexURL || reference.indexFile || this.file + ".fai";
+        this.compressedIndexFile = reference.compressedIndexURL || false;
+        this.withCredentials = reference.withCredentials;
+        this.chromosomeNames = [];
+        this.chromosomes = {};
+        this.sequences = {};
+        this.offsets = {};
+
+        // Build a track-like config object from the referenceObject
+        const config = {};
+        for (let key in reference) {
+            if (reference.hasOwnProperty(key) && !reservedProperties.has(key)) {
+                config[key] = reference[key];
+            }
+        }
+        this.config = config;
+    }
+
+
+    async init() {
+        return this.getIndex()
+    }
+
+    async getSequence(chr, start, end) {
+
+        const hasCachedSquence = this.interval && this.interval.contains(chr, start, end);
+
+        if (!hasCachedSquence) {
+
+            // Expand query, to minimum of 50kb
+            let qstart = start;
+            let qend = end;
+            if ((end - start) < 50000) {
+                const w = (end - start);
+                const center = Math.round(start + w / 2);
+                qstart = Math.max(0, center - 25000);
+                qend = center + 25000;
+            }
+
+            const seqBytes = await this.readSequence(chr, qstart, qend);
+            this.interval = new GenomicInterval(chr, qstart, qend, seqBytes);
+        }
+
+        const offset = start - this.interval.start;
+        const n = end - start;
+        const seq = this.interval.features ? this.interval.features.substr(offset, n) : null;
+        return seq
+    }
+
+    async getIndex() {
+
+        if (this.index) {
+            return this.index
+        } else {
+            const data = await igvxhr.load(this.indexFile, buildOptions(this.config));
+            const lines = splitLines$3(data);
+            const len = lines.length;
+            let lineNo = 0;
+            let order = 0;
+            this.index = {};
+
+            while (lineNo < len) {
+                const tokens = lines[lineNo++].split("\t");
+                const nTokens = tokens.length;
+
+                if (nTokens === 5) {
+                    // Parse the index line.
+                    const chr = tokens[0];
+                    const size = parseInt(tokens[1]);
+                    const position = parseInt(tokens[2]);
+                    const basesPerLine = parseInt(tokens[3]);
+                    const bytesPerLine = parseInt(tokens[4]);
+
+                    const indexEntry = {
+                        size: size,
+                        position: position,
+                        basesPerLine: basesPerLine,
+                        bytesPerLine: bytesPerLine
+                    };
+
+                    this.chromosomeNames.push(chr);
+                    this.index[chr] = indexEntry;
+                    this.chromosomes[chr] = new Chromosome(chr, order++, size);
+                }
+            }
+            return this.index
+        }
+    }
+
+
+    //Code is losely based on https://github.com/GMOD/bgzf-filehandle
+    //Reworked however in orde to work with the igvxhr interface for loading files
+    //Additionally, replaced calls to the Long.js interface with standard JS calls for ArrayBuffers and the associated views
+    //
+    //The compressed index is an array of blocks, with each block being a pair: compressed-position & uncompressed-position (both in bytes)
+    async getCompressedIndex() {
+        const GZI_NUM_BYTES_OFFSET = 8;
+        const GZI_NUM_BYTES_BLOCK = 8;
+        if (this.compressedIndex) {
+            return this.compressedIndex
+        }
+        if (!this.compressedIndexFile) {
+            this.compressedIndex = [];
+            return this.compressedIndex
+        }
+        //In contrast to the 'normal' reference (for which the index is chromosome based), this index is block-based
+        //As such there is not need to make it a hash. An array is sufficient.
+        this.compressedIndex = [];
+        const gziData = await igvxhr.loadArrayBuffer(this.compressedIndexFile, buildOptions(this.config));
+        const givenFileSize = gziData.byteLength;
+        if (givenFileSize < GZI_NUM_BYTES_OFFSET) {
+            console.log("Cannot parse GZI index file: length (" + givenFileSize + " bytes) is insufficient to determine content of index.");
+            return this.compressedIndex
+        }
+        //First 8 bytes are a little endian unsigned bigint (64bit), indicating the number of blocks in the index.
+        const numBlocksBuffer = gziData.slice(0, GZI_NUM_BYTES_OFFSET);
+        const numBlocks = Number((new DataView(numBlocksBuffer)).getBigUint64(0, true));
+        //The remainder of the gzi content are pairs of little endian unsigned bigint (64bit) numbers.
+        //The first of the pair is the compressed position of a block
+        //The second of the pair is the uncompressed position of a block
+
+        //Sanity check:
+        //Is the size of the array-buffer (of the entire file) correct with regards to the number of blocks detailled by the first 8 bytes of the file?
+        //Total file-size should be:
+        // 8 + 2*(num_entries*8) bytes, with the first 8 bytes indicating the number of entries
+        const expectedFileSize = GZI_NUM_BYTES_OFFSET + numBlocks * 2 * GZI_NUM_BYTES_BLOCK;
+        if (givenFileSize != expectedFileSize) {
+            console.log("Incorrect file size of reference genome index. Expected : " + expectedFileSize + ". Received : " + givenFileSize);
+            return this.compressedIndex
+        }
+
+        //Push the first block to the index: the first block always has positions 0 for both the compressed and uncompressed file
+        this.compressedIndex.push([0, 0]);
+
+        //Further process all the blocks of the GZI index, and keep them in memory
+        for (let blockNumber = 0; blockNumber < numBlocks; blockNumber++) {
+            const bufferBlockStart = GZI_NUM_BYTES_OFFSET + blockNumber * 2 * GZI_NUM_BYTES_BLOCK;
+            const bufferBlockEnd = GZI_NUM_BYTES_OFFSET + blockNumber * 2 * GZI_NUM_BYTES_BLOCK + 2 * GZI_NUM_BYTES_BLOCK;
+            const bufferBlock = gziData.slice(bufferBlockStart, bufferBlockEnd);
+            const viewBlock = new DataView(bufferBlock);
+            const compressedPosition = Number(viewBlock.getBigUint64(0, true));  //First 8 bytes
+            const uncompressedPosition = Number(viewBlock.getBigUint64(GZI_NUM_BYTES_BLOCK, true)); //Last 8 bytes
+            this.compressedIndex.push([compressedPosition, uncompressedPosition]);
+        }
+        return this.compressedIndex
+    }
+
+    //The Fasta-index gives a byte-position of the chromosomal sequences within the FASTA file.
+    //These locations need to be remapped to the locations within the zipped reference genome, using the GZI index
+    //This function provides this functionality by 
+    //1) taking the indicated start/stop byte locations within the UNCOMPRESSED FASTA file
+    //2) remapping these byte locations to the correct blocks (and associated positions) within the COMPRESSED FASTA file
+    //Subsequently, the calling method can then extract the correct blocks from the compressed FASTA files and uncompressed the data
+    async getRelevantCompressedBlockNumbers(queryPositionStart, queryPositionEnd) {
+        const UNCOMPRESSED_POSITION = 1;
+        //Fallback for impossible values
+        if (queryPositionStart < 0 || queryPositionEnd < 0 || queryPositionEnd < queryPositionStart) {
+            console.log("Incompatible query positions for reference-genome. Start:" + queryPositionStart + " | End:" + queryPositionEnd);
+            return []
+        }
+        //Ensure compressed index is loaded
+        await this.getCompressedIndex();
+        let result = [];
+        //Now search for the correct block-numbers (going from 0 to length(compressed-index)) which overlap with the provided byte-positions
+        const lowestBlockNumber = 0;
+        const highestBlockNumber = this.compressedIndex.length - 1;
+        //Failsafe if for some reason the compressed index wasn't loaded or doesn't contain any data
+        if (this.compressedIndex.length == 0) {
+            console.log("Compressed index does not contain any content");
+            return []
+        }
+        //Failsafe: if the queryPositionStart is greater than the uncompressed-position of the final block,
+        //then this final block is the only possible result
+        if (queryPositionStart > (this.compressedIndex)[highestBlockNumber][UNCOMPRESSED_POSITION]) {
+            return [highestBlockNumber]
+        }
+
+        //Rather than doing a linear search over all blocks, a binary search is done for speed considerations
+        //We are searching for the highest block number for which its position is smaller than the query start position
+        //Afterwards we will simply expand the blocks until the entire query range is covered
+        let searchLow = lowestBlockNumber;
+        let searchHigh = highestBlockNumber;
+        let searchPosition = Math.floor(this.compressedIndex.length / 2);
+        let maxIterations = this.compressedIndex.length + 1;
+        let solutionFound = false;
+        //instead of doing a while(true), this for-loop prevents eternal loops in case of issues
+        for (let iteration = 0; iteration < maxIterations; iteration++) {
+            const searchUncompressedPosition = (this.compressedIndex)[searchPosition][UNCOMPRESSED_POSITION];
+            const nextSearchUncompressedPosition = (searchPosition < (this.compressedIndex.length - 1)) ? (this.compressedIndex)[searchPosition + 1][UNCOMPRESSED_POSITION] : Infinity;
+            //The query position lies within the current search block
+            if (searchUncompressedPosition <= queryPositionStart && nextSearchUncompressedPosition > queryPositionStart) {
+                solutionFound = true;
+                break //searchPosition is the correct block number index
+            }
+            //Current block lies before the query position
+            else if (searchUncompressedPosition < queryPositionStart) {
+                searchLow = searchPosition + 1;
+            }
+            //Current block lies after the query position
+            else {
+                searchHigh = searchPosition - 1;
+            }
+            searchPosition = Math.ceil((searchHigh - searchLow) / 2) + searchLow;
+        }
+        //If for some reason the binary search did not reveal a correct block index, then we return the empty result
+        if (!solutionFound) {
+            console.log("No blocks within compressed index found that correspond with query positions " + queryPositionStart + "," + queryPositionEnd);
+            console.log(this.compressedIndex);
+            return []
+        }
+
+        //Now extend the result by adding additional blocks until the entire query range is covered
+        result.push(searchPosition);
+        for (let blockIndex = searchPosition + 1; blockIndex < this.compressedIndex.length; blockIndex++) {
+            result.push(blockIndex);
+            const blockUncompressedPosition = (this.compressedIndex)[blockIndex][UNCOMPRESSED_POSITION];
+            if (blockUncompressedPosition >= queryPositionEnd) {
+                break
+            }
+        }
+
+        //It is possible that the query end position lies AFTER the start of the final block
+        //If this is the case, we add a 'fake' negative index which will be interpreted by the loadAndUncompressBlocks method as an indicator
+        //to read until the end of the file 
+        const finalRelevantBlock = result[result.length - 1];
+        const finalIndexBlock = this.compressedIndex.length - 1;
+        if (finalRelevantBlock === finalIndexBlock && (this.compressedIndex)[finalRelevantBlock][UNCOMPRESSED_POSITION] < queryPositionEnd) {
+            result.push(-1);
+        }
+
+        return result
+    }
+
+
+    //Load the content from the blockIndices.
+    //This is done on a per-block basis
+    //Content of the first block will be trimmed in order to match the expected offset
+    async loadAndUncompressBlocks(blockIndices, startByte) {
+        const COMPRESSED_POSITION = 0;
+        const UNCOMPRESSED_POSITION = 1;
+        //Normally the compressed index should already exist, we're just makeing sure here
+        await this.getCompressedIndex();
+
+        if (blockIndices.length == 0) {
+            return ""
+        }
+
+        //Storing data in seperate array with indices in order to assert order due to async behaviour of loops
+        let resultCache = Array(blockIndices.length - 1);
+        for (let i = 0; i < blockIndices.length - 1; i++) {
+            const currentBlockNumber = blockIndices[i];
+            const currentBlockInfo = (this.compressedIndex)[currentBlockNumber];
+            const currentBlockCompressedPosition = currentBlockInfo[COMPRESSED_POSITION];
+
+            const nextBlockNumber = blockIndices[i + 1];
+            let compressedBytes = [];
+            if (nextBlockNumber != -1) {  //default : read current entire block only
+                const nextBlockInfo = (this.compressedIndex)[nextBlockNumber];
+                const nextBlockCompressedPosition = nextBlockInfo[COMPRESSED_POSITION];
+                const compressedLength = nextBlockCompressedPosition - currentBlockCompressedPosition;
+                compressedBytes = await igvxhr.loadArrayBuffer(this.file, buildOptions(this.config, {
+                    range: {
+                        start: currentBlockCompressedPosition,
+                        size: compressedLength
+                    }
+                }));
+            } else {   // special case for query within final block: read until the end of the file
+                compressedBytes = await igvxhr.loadArrayBuffer(this.file, buildOptions(this.config, {
+                    range: {
+                        start: currentBlockCompressedPosition
+                    }
+                }));
+            }
+            //now unzip the compressed bytes, and store them in the resultCache
+            const uncompressedBytes = await unbgzf(compressedBytes);
+            resultCache[i] = uncompressedBytes;
+        }
+
+        //Iterate over the result cache, create sequences from the data, and create a full sequence string from the data
+        let result = "";
+        for (let i = 0; i < resultCache.length; i++) {
+            for (let j = 0; j < resultCache[i].length; j++) {
+                const c = String.fromCharCode(resultCache[i][j]);
+                result = result + c;
+            }
+        }
+
+        //postprocess this data: because entire blocks are read we need to remove the first N bases of the first used block, 
+        //which are not included in the original query positions
+        const firstBlockInfo = (this.compressedIndex)[blockIndices[0]];
+        const offset = startByte - firstBlockInfo[UNCOMPRESSED_POSITION];
+        result = result.substring(offset);
+
+        return result
+    }
+
+
+    async readSequence(chr, qstart, qend) {
+
+        await this.getIndex();
+        await this.getCompressedIndex(); //This will work even if no compressed index file is set
+
+        const idxEntry = this.index[chr];
+        if (!idxEntry) {
+            console.log("No index entry for chr: " + chr);
+            // Tag interval with null so we don't try again
+            this.interval = new GenomicInterval(chr, qstart, qend, null);
+            return null
+        }
+
+        const start = Math.max(0, qstart);    // qstart should never be < 0
+        const end = Math.min(idxEntry.size, qend);
+        const bytesPerLine = idxEntry.bytesPerLine;
+        const basesPerLine = idxEntry.basesPerLine;
+        const position = idxEntry.position;
+        const nEndBytes = bytesPerLine - basesPerLine;
+        const startLine = Math.floor(start / basesPerLine);
+        const endLine = Math.floor(end / basesPerLine);
+        const base0 = startLine * basesPerLine;   // Base at beginning of start line
+        const offset = start - base0;
+        const startByte = position + startLine * bytesPerLine + offset;
+        const base1 = endLine * basesPerLine;
+        const offset1 = end - base1;
+        const endByte = position + endLine * bytesPerLine + offset1 - 1;
+        const byteCount = endByte - startByte + 1;
+
+        if (byteCount <= 0) {
+            console.error("No sequence for " + chr + ":" + qstart + "-" + qend);
+            return null
+        }
+
+        //If the compressed index file is set, then we are dealing with a compressed genome sequence
+        //The selection of startByte/endByte is done for the non-compressed genome sequence.
+        //These need to be 'converted' to the correct byte positions in the compressed genome sequence,
+        //by making use of the compressed index (GZI file)
+        let allBytes;
+        if (!this.compressedIndexFile) {
+            allBytes = await igvxhr.load(this.file, buildOptions(this.config, {
+                range: {
+                    start: startByte,
+                    size: byteCount
+                }
+            }));
+        } else {
+            let relevantBlockIndices = await this.getRelevantCompressedBlockNumbers(startByte, endByte);
+            if (relevantBlockIndices.length === 0) {
+                console.log("No blocks in the compressed index that correspond with the requested byte positions (" + startByte + "," + endByte + ")");
+                return null
+            }
+            allBytes = await this.loadAndUncompressBlocks(relevantBlockIndices, startByte);
+        }
+
+        if (!allBytes) {
+            return null
+        }
+
+        let nBases,
+            seqBytes = "",
+            srcPos = 0,
+            allBytesLength = allBytes.length;
+
+        if (offset > 0) {
+            nBases = Math.min(end - start, basesPerLine - offset);
+            seqBytes += allBytes.substr(srcPos, nBases);
+            srcPos += (nBases + nEndBytes);
+        }
+
+        while (srcPos < allBytesLength) {
+            nBases = Math.min(basesPerLine, allBytesLength - srcPos);
+            seqBytes += allBytes.substr(srcPos, nBases);
+            srcPos += (nBases + nEndBytes);
+        }
+
+        return seqBytes
+
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const splitLines$2 = splitLines$5;
+
+class ChromSizes {
+
+
+    constructor(url) {
+        this.url = url;
+        this.chromosomeNames = [];
+        this.chromosomes = {};
+    }
+
+
+    async init() {
+        return this.loadAll()
+    }
+
+    async getSequence(chr, start, end) {
+
+        return undefined // TODO -- return array of "N"s?
+    }
+
+    async loadAll() {
+
+        let data;
+        if (isDataURL(this.url)) {
+            let bytes = decodeDataURI$1(this.fastaURL);
+            data = "";
+            for (let b of bytes) {
+                data += String.fromCharCode(b);
+            }
+        } else {
+            data = await igvxhr.load(this.url, {});
+        }
+
+
+        this.chromosomeNames = [];
+        this.chromosomes = {};
+
+        const lines = splitLines$2(data);
+        let order = 0;
+        for (let nextLine of lines) {
+            const tokens = nextLine.split('\t');
+            this.chromosomeNames.push(tokens[0]);
+            const chrLength = Number.parseInt(tokens[1]);
+            const chromosome = new Chromosome(tokens[0], order++, chrLength);
+            this.chromosomes[tokens[0]] = chromosome;
+
+        }
+    }
+
+}
+
+async function loadFasta(reference) {
+
+    let fasta;
+    if ("chromsizes" === reference.format) {
+        fasta = new ChromSizes(reference.fastaURL);
+    } else if (isDataURL(reference.fastaURL) || reference.indexed === false) {
+        fasta = new NonIndexedFasta(reference);
+    } else {
+        fasta = new FastaSequence(reference);
+    }
+    await fasta.init();
+    return fasta
+}
+
+const defaultNucleotideColors = {
+    "A": "rgb(  0, 200,   0)",
+    "C": "rgb(  0,0,200)",
+    "T": "rgb(255,0,0)",
+    "G": "rgb(209,113,  5)",
+    "N": "rgb(80,80,80)"
+};
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const defaultSequenceTrackOrder = Number.MIN_SAFE_INTEGER;
+
+const translationDict = {
+    'TTT': 'F',
+    'TTC': 'F',
+    'TTA': 'L',
+    'TTG': 'L',
+    'CTT': 'L',
+    'CTC': 'L',
+    'CTA': 'L',
+    'CTG': 'L',
+    'ATT': 'I',
+    'ATC': 'I',
+    'ATA': 'I',
+    'ATG': 'M',
+    'GTT': 'V',
+    'GTC': 'V',
+    'GTA': 'V',
+    'GTG': 'V',
+    'TCT': 'S',
+    'TCC': 'S',
+    'TCA': 'S',
+    'TCG': 'S',
+    'CCT': 'P',
+    'CCC': 'P',
+    'CCA': 'P',
+    'CCG': 'P',
+    'ACT': 'T',
+    'ACC': 'T',
+    'ACA': 'T',
+    'ACG': 'T',
+    'GCT': 'A',
+    'GCC': 'A',
+    'GCA': 'A',
+    'GCG': 'A',
+    'TAT': 'Y',
+    'TAC': 'Y',
+    'TAA': 'STOP',
+    'TAG': 'STOP',
+    'CAT': 'H',
+    'CAC': 'H',
+    'CAA': 'Q',
+    'CAG': 'Q',
+    'AAT': 'N',
+    'AAC': 'N',
+    'AAA': 'K',
+    'AAG': 'K',
+    'GAT': 'D',
+    'GAC': 'D',
+    'GAA': 'E',
+    'GAG': 'E',
+    'TGT': 'C',
+    'TGC': 'C',
+    'TGA': 'STOP',
+    'TGG': 'W',
+    'CGT': 'R',
+    'CGC': 'R',
+    'CGA': 'R',
+    'CGG': 'R',
+    'AGT': 'S',
+    'AGC': 'S',
+    'AGA': 'R',
+    'AGG': 'R',
+    'GGT': 'G',
+    'GGC': 'G',
+    'GGA': 'G',
+    'GGG': 'G'
+};
+
+const complement = {};
+const t1 = ['A', 'G', 'C', 'T', 'Y', 'R', 'W', 'S', 'K', 'M', 'D', 'V', 'H', 'B', 'N', 'X'];
+const t2 = ['T', 'C', 'G', 'A', 'R', 'Y', 'W', 'S', 'M', 'K', 'H', 'B', 'D', 'V', 'N', 'X'];
+for (let i = 0; i < t1.length; i++) {
+    complement[t1[i]] = t2[i];
+    complement[t1[i].toLowerCase()] = t2[i].toLowerCase();
+}
+
+const DEFAULT_HEIGHT = 25;
+const TRANSLATED_HEIGHT = 115;
+const SEQUENCE_HEIGHT = 15;
+const FRAME_HEIGHT = 25;
+const FRAME_BORDER = 5;
+const BP_PER_PIXEL_THRESHOLD = 1 / 10;
+
+const bppFeatureFetchThreshold = 10;
+
+class SequenceTrack {
+
+    constructor(config, browser) {
+
+        this.config = config;
+        this.browser = browser;
+        this.type = "sequence";
+        this.removable = config.removable === undefined ? true : config.removable;      // Defaults to true
+        this.name = config.name;
+        this.id = config.id;
+        this.sequenceType = config.sequenceType || "dna";             //   dna | rna | prot
+        this.disableButtons = false;
+        this.order = config.order || defaultSequenceTrackOrder;
+        this.ignoreTrackMenu = false;
+
+        this.reversed = config.reversed === true;
+        this.frameTranslate = config.frameTranslate === true;
+        this.height = this.frameTranslate ? TRANSLATED_HEIGHT : DEFAULT_HEIGHT;
+
+        // Hack for backward compatibility
+        if(config.url) {
+            config.fastaURL = config.url;
+        }
+
+        if(!config.fastaURL) {
+            // Mark this as the genome reference sequence ==> backward compatibility convention
+            this.id = config.id || "sequence";
+        }
+
+    }
+
+    menuItemList() {
+        return [
+            {
+                name: this.reversed ? "Forward" : "Reverse",
+                click: () => {
+                    this.reversed = !this.reversed;
+                    this.trackView.repaintViews();
+                }
+            },
+            {
+                name: this.frameTranslate ? "Close Translation" : "Three-frame Translate",
+                click: () => {
+                    this.frameTranslate = !this.frameTranslate;
+                    if (this.frameTranslate) {
+                        for (let vp of this.trackView.viewports) {
+                            vp.setContentHeight(TRANSLATED_HEIGHT);
+                        }
+                        this.trackView.setTrackHeight(TRANSLATED_HEIGHT);
+                    } else {
+                        for (let vp of this.trackView.viewports) {
+                            vp.setContentHeight(DEFAULT_HEIGHT);
+                        }
+                        this.trackView.setTrackHeight(DEFAULT_HEIGHT);
+                    }
+                    this.trackView.repaintViews();
+
+                }
+            }
+        ]
+    }
+
+    contextMenuItemList(clickState) {
+        const viewport = clickState.viewport;
+        if (viewport.referenceFrame.bpPerPixel <= 1) {
+            const pixelWidth = viewport.getWidth();
+            const bpWindow = pixelWidth * viewport.referenceFrame.bpPerPixel;
+            const chr = viewport.referenceFrame.chr;
+            const start = Math.floor(viewport.referenceFrame.start);
+            const end = Math.ceil(start + bpWindow);
+            const items = [
+                {
+                    label: this.reversed ? 'View visible sequence (reversed)...' : 'View visible sequence...',
+                    click: async () => {
+                        let seq = await this.browser.genome.sequence.getSequence(chr, start, end);
+                        if (!seq) {
+                            seq = "Unknown sequence";
+                        } else if (this.reversed) {
+                            seq = reverseComplementSequence(seq);
+                        }
+                        this.browser.alert.present(seq);
+                    }
+                }
+            ];
+            if (isSecureContext()) {
+                items.push({
+                    label: 'Copy visible sequence',
+                    click: async () => {
+                        let seq = await this.browser.genome.sequence.getSequence(chr, start, end);
+                        if (!seq) {
+                            seq = "Unknown sequence";
+                        } else if (this.reversed) {
+                            seq = reverseComplementSequence(seq);
+                        }
+                        try {
+                            await navigator.clipboard.writeText(seq);
+                        } catch (e) {
+                            console.error(e);
+                            this.browser.alert.present(`error copying sequence to clipboard ${e}`);
+                        }
+                    }
+
+                });
+            }
+            items.push('<hr/>');
+
+            return items
+        } else {
+            return undefined
+        }
+    }
+
+    translateSequence(seq) {
+
+        const threeFrame = [[], [], []];
+
+        for (let fNum of [0, 1, 2]) {
+            let idx = fNum;
+
+            while ((seq.length - idx) >= 3) {
+                let st = seq.slice(idx, idx + 3);
+                if (this.reversed) {
+                    st = st.split('').reverse().join('');
+                }
+
+                const aa = translationDict[st.toUpperCase()] || "";
+                threeFrame[fNum].push({
+                    codons: st,
+                    aminoA: aa
+                });
+                idx += 3;
+            }
+        }
+
+        return threeFrame
+    }
+
+    /**
+     * Return the source for sequence.  If an explicit fasta url is defined, use it, otherwise fetch sequence
+     * from the current genome
+     * *
+     * @returns {Promise<WrappedFasta|*>}
+     */
+    async getSequenceSource() {
+        if(this.config.fastaURL) {
+            if(!this.fasta) {
+                this.fasta = new WrappedFasta(this.config, this.browser.genome);
+                await this.fasta.init();
+            }
+            return this.fasta
+        } else {
+            return this.browser.genome.sequence
+        }
+    }
+
+    async getFeatures(chr, start, end, bpPerPixel) {
+
+        start = Math.floor(start);
+        end = Math.floor(end);
+
+        if (bpPerPixel && bpPerPixel > bppFeatureFetchThreshold) {
+            return null
+        } else {
+            const sequenceSource = await this.getSequenceSource();
+            const sequence = await sequenceSource.getSequence(chr, start, end);
+            return {
+                bpStart: start,
+                sequence: sequence
+            }
+        }
+    }
+
+    draw(options) {
+
+        const ctx = options.context;
+
+        if (options.features) {
+
+            let sequence = options.features.sequence;
+            if(!sequence) {
+                return
+            }
+
+            if (this.reversed) {
+                sequence = sequence.split('').map(function (cv) {
+                    return complement[cv]
+                }).join('');
+            }
+
+            const sequenceBpStart = options.features.bpStart;  // genomic position at start of sequence
+            const bpEnd = 1 + options.bpStart + (options.pixelWidth * options.bpPerPixel);
+
+            for (let bp = Math.floor(options.bpStart); bp <= bpEnd; bp++) {
+
+                const seqIdx = Math.floor(bp - sequenceBpStart);
+
+                if (seqIdx >= 0 && seqIdx < sequence.length) {
+
+                    const offsetBP = bp - options.bpStart;
+                    const aPixel = offsetBP / options.bpPerPixel;
+                    const pixelWidth = 1 / options.bpPerPixel;
+                    const baseLetter = sequence[seqIdx];
+                    const color = this.fillColor(baseLetter.toUpperCase());
+
+                    if (options.bpPerPixel > BP_PER_PIXEL_THRESHOLD) {
+                        IGVGraphics.fillRect(ctx, aPixel, FRAME_BORDER, pixelWidth, SEQUENCE_HEIGHT - FRAME_BORDER, {fillStyle: color});
+                    } else {
+                        const textPixel = aPixel + 0.5 * (pixelWidth - ctx.measureText(baseLetter).width);
+
+
+
+
+                        if ('y' === options.axis) {
+                            ctx.save();
+                            IGVGraphics.labelTransformWithContext(ctx, textPixel);
+                            IGVGraphics.strokeText(ctx, baseLetter, textPixel, SEQUENCE_HEIGHT, {strokeStyle: color});
+                            ctx.restore();
+                        } else {
+                            IGVGraphics.strokeText(ctx, baseLetter, textPixel, SEQUENCE_HEIGHT, {strokeStyle: color});
+                        }
+
+                    }
+                }
+            }
+
+            if (this.frameTranslate) {
+
+                let y = SEQUENCE_HEIGHT + 2 * FRAME_BORDER;
+                const translatedSequence = this.translateSequence(sequence);
+
+                for (let fNum = 0; fNum < translatedSequence.length; fNum++) {    // == 3, 1 for each frame
+
+                    const aaSequence = translatedSequence[fNum];  // AA sequence for this frame
+
+                    for (let idx = 0; idx < aaSequence.length; idx++) {
+
+                        let color = 0 === idx % 2 ? 'rgb(160,160,160)' : 'rgb(224,224,224)';
+                        const cv = aaSequence[idx];
+
+                        const bpPos = sequenceBpStart + fNum + (idx * 3);
+                        const bpOffset = bpPos - options.bpStart;
+                        const p0 = Math.floor(bpOffset / options.bpPerPixel);
+                        const p1 = Math.floor((bpOffset + 3) / options.bpPerPixel);
+                        const pc = Math.round((p0 + p1) / 2);
+
+                        if (p1 < 0) {
+                            continue   // off left edge
+                        } else if (p0 > options.pixelWidth) {
+                            break      // off right edge
+                        }
+
+                        let aaLabel = cv.aminoA;
+                        if (cv.aminoA.indexOf('STOP') > -1) {
+                            color = 'rgb(255, 0, 0)';
+                            aaLabel = 'STOP'; //Color blind accessible
+                        } else if (cv.aminoA === 'M') {
+                            color = 'rgb(0, 153, 0)';
+                            aaLabel = 'START'; //Color blind accessible
+                        }
+
+                        IGVGraphics.fillRect(ctx, p0, y, p1 - p0, FRAME_HEIGHT, {fillStyle: color});
+
+                        if (options.bpPerPixel <= 1 / 10) {
+                            IGVGraphics.strokeText(ctx, aaLabel, pc - (ctx.measureText(aaLabel).width / 2), y + 15);
+                        }
+                    }
+                    y += (FRAME_HEIGHT + FRAME_BORDER);
+                }
+            }
+        }
+    }
+
+    get supportsWholeGenome() {
+        return false
+    }
+
+    computePixelHeight(ignore) {
+        this.height = this.frameTranslate ? TRANSLATED_HEIGHT : DEFAULT_HEIGHT;
+        return this.height
+    }
+
+    fillColor(index) {
+
+        if (this.color) {
+            return this.color
+        } else if ("dna" === this.sequenceType) {
+            // return this.browser.nucleotideColors[index] || 'gray'
+            return defaultNucleotideColors[index] || 'gray'
+        } else {
+            return 'rgb(0, 0, 150)'
+        }
+    }
+
+    /**
+     * Return the current state of the track.  Used to create sessions and bookmarks.
+     *
+     * @returns {*|{}}
+     */
+    getState() {
+        const config = {
+            type: "sequence"
+        };
+        if (this.order !== defaultSequenceTrackOrder) {
+            config.order = this.order;
+        }
+        if (this.reversed) {
+            config.revealed = true;
+        }
+        return config
+    }
+
+}
+
+/**
+ * Wrapper for a Fasta object that does chr name alias translation.   This is not neccessary for the genome fasta,
+ * as it defines the reference name, but can be neccessary if loading an additional fasta as a track
+ *
+ */
+class WrappedFasta {
+
+    constructor(config, genome) {
+        this.config = config;
+        this.genome = genome;
+    }
+
+    async init() {
+        this.fasta = await loadFasta(this.config);
+        this.chrNameMap = new Map();
+        for(let name of this.fasta.chromosomeNames) {
+            this.chrNameMap.set(this.genome.getChromosomeName(name), name);
+        }
+    }
+
+    async getSequence(chr, start, end) {
+        const chrName = this.chrNameMap.has(chr) ? this.chrNameMap.get(chr) : chr;
+        return this.fasta.getSequence(chrName, start, end)
+    }
+
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class Viewport {
+
+    constructor(trackView, viewportColumn, referenceFrame, width) {
+
+        this.guid = domUtils.guid();
+        this.trackView = trackView;
+        this.referenceFrame = referenceFrame;
+
+        this.browser = trackView.browser;
+
+        this.$viewport = $$1('<div class="igv-viewport">');
+        viewportColumn.appendChild(this.$viewport.get(0));
+
+        if (trackView.track.height) {
+            this.$viewport.get(0).style.height = `${trackView.track.height}px`;
+        }
+
+        // Create an alert dialog for the sequence track to copy ref sequence to.
+        if (trackView.track instanceof SequenceTrack) {
+            this.alert = new AlertDialog(this.$viewport.get(0));
+        }
+
+        this.contentTop = 0;
+        this.contentHeight = this.$viewport.height();
+
+
+        this.$viewport.width(width);
+
+        this.initializationHelper();
+
+    }
+
+    initializationHelper() {
+
+    }
+
+    showMessage(message) {
+        if (!this.messageDiv) {
+            this.messageDiv = document.createElement('div');
+            this.messageDiv.className = 'igv-viewport-message';
+            //this.contentDiv.append(this.messageDiv)
+            this.$viewport.append($$1(this.messageDiv));
+        }
+        this.messageDiv.textContent = message;
+        this.messageDiv.style.display = 'inline-block';
+    }
+
+    hideMessage(message) {
+        if (this.messageDiv)
+            this.messageDiv.style.display = 'none';
+    }
+
+    setTrackLabel(label) {
+    }
+
+    startSpinner() {
+    }
+
+    stopSpinner() {
+    }
+
+    checkZoomIn() {
+        return true
+    }
+
+    shift() {
+    }
+
+    setTop(contentTop) {
+
+        this.contentTop = contentTop;
+        this.$viewport.height();
+
+        //this.$content.css('top', `${contentTop}px`)
+        //
+        // if (undefined === this.canvasVerticalRange || this.canvasVerticalRange.bottom < viewBottom || this.canvasVerticalRange.top > viewTop) {
+        //     console.log("Repaint " + this.canvasVerticalRange)
+        //    this.repaint()
+        // }
+
+    }
+
+    async loadFeatures() {
+        return undefined
+    }
+
+    clearCache() {
+
+    }
+
+    async repaint() {
+    }
+
+    draw(drawConfiguration, features, roiFeatures) {
+        console.log('Viewport - draw(drawConfiguration, features, roiFeatures)');
+    }
+
+    checkContentHeight(features) {
+
+        let track = this.trackView.track;
+        features = features || this.cachedFeatures;
+        if ("FILL" === track.displayMode) {
+            this.setContentHeight(this.$viewport.height());
+        } else if (typeof track.computePixelHeight === 'function') {
+            if (features && features.length > 0) {
+                let requiredContentHeight = track.computePixelHeight(features);
+                //let currentContentHeight = this.$content.height()
+                let currentContentHeight = this.contentHeight;
+                if (requiredContentHeight !== currentContentHeight) {
+                    this.setContentHeight(requiredContentHeight);
+                }
+            }
+        }
+    }
+
+    getContentHeight() {
+        //return this.$content.height()
+        return this.contentHeight
+    }
+
+    setContentHeight(contentHeight) {
+       this.contentHeight = contentHeight;
+    }
+
+    isLoading() {
+        return false
+    }
+
+    saveSVG() {
+
+    }
+
+    isVisible() {
+        return this.$viewport.width()
+    }
+
+    setWidth(width) {
+        this.$viewport.width(width);
+    }
+
+    getWidth() {
+        return this.$viewport.width()
+    }
+
+    getContentTop() {
+        return this.contentTop
+    }
+
+    containsPosition(chr, position) {
+        console.log('Viewport - containsPosition(chr, position)');
+    }
+
+    addMouseHandlers() {
+    }
+
+    removeMouseHandlers() {
+    }
+
+    /**
+     * Called when the associated track is removed.  Do any needed cleanup here.
+     */
+    dispose() {
+
+        if (this.popover) {
+            this.popover.dispose();
+        }
+
+        this.$viewport.get(0).remove();
+
+        // Null out all properties -- this should not be neccessary, but just in case there is a
+        // reference to self somewhere we want to free memory.
+        for (let key of Object.keys(this)) {
+            this[key] = undefined;
+        }
+    }
+
+}
+
+/*!!
+ *  Canvas 2 Svg v1.0.19
+ *  A low level canvas to SVG converter. Uses a mock canvas context to build an SVG document.
+ *
+ *  Licensed under the MIT license:
+ *  http://www.opensource.org/licenses/mit-license.php
+ *
+ *  Author:
+ *  Kerry Liu
+ *
+ *  Copyright (c) 2014 Gliffy Inc.
+ */
+
+//helper function to format a string
+function format(str, args) {
+    var keys = Object.keys(args), i;
+    for (i = 0; i < keys.length; i++) {
+        str = str.replace(new RegExp("\\{" + keys[i] + "\\}", "gi"), args[keys[i]]);
+    }
+    return str
+}
+
+//helper function that generates a random string
+function randomString(holder) {
+    var chars, randomstring, i;
+    if (!holder) {
+        throw new Error("cannot create a random attribute name for an undefined object")
+    }
+    chars = "ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
+    randomstring = "";
+    do {
+        randomstring = "";
+        for (i = 0; i < 12; i++) {
+            randomstring += chars[Math.floor(Math.random() * chars.length)];
+        }
+    } while (holder[randomstring])
+    return randomstring
+}
+
+//helper function to map named to numbered entities
+function createNamedToNumberedLookup(items, radix) {
+    var i, entity, lookup = {}, base10;
+    items = items.split(',');
+    radix = radix || 10;
+    // Map from named to numbered entities.
+    for (i = 0; i < items.length; i += 2) {
+        entity = '&' + items[i + 1] + ';';
+        base10 = parseInt(items[i], radix);
+        lookup[entity] = '&#' + base10 + ';';
+    }
+    //FF and IE need to create a regex from hex values ie &nbsp; == \xa0
+    lookup["\\xa0"] = '&#160;';
+    return lookup
+}
+
+//helper function to map canvas-textAlign to svg-textAnchor
+function getTextAnchor(textAlign) {
+    //TODO: support rtl languages
+    var mapping = {"left": "start", "right": "end", "center": "middle", "start": "start", "end": "end"};
+    return mapping[textAlign] || mapping.start
+}
+
+//helper function to map canvas-textBaseline to svg-dominantBaseline
+function getDominantBaseline(textBaseline) {
+    //INFO: not supported in all browsers
+    var mapping = {
+        "alphabetic": "alphabetic",
+        "hanging": "hanging",
+        "top": "text-before-edge",
+        "bottom": "text-after-edge",
+        "middle": "central"
+    };
+    return mapping[textBaseline] || mapping.alphabetic
+}
+
+
+/**
+ * Return a new normalized vector of given vector
+ */
+function normalize(vector) {
+    var len = Math.sqrt(vector[0] * vector[0] + vector[1] * vector[1]);
+    return [vector[0] / len, vector[1] / len]
+}
+
+
+function intersectRect(rect1, rect2) {
+    return (rect1.x < rect2.x + rect2.width &&
+        rect1.x + rect1.width > rect2.x &&
+        rect1.y < rect2.y + rect2.height &&
+        rect1.y + rect1.height > rect2.y)
+}
+
+
+// Unpack entities lookup where the numbers are in radix 32 to reduce the size
+// entity mapping courtesy of tinymce
+const namedEntities = createNamedToNumberedLookup(
+    '50,nbsp,51,iexcl,52,cent,53,pound,54,curren,55,yen,56,brvbar,57,sect,58,uml,59,copy,' +
+    '5a,ordf,5b,laquo,5c,not,5d,shy,5e,reg,5f,macr,5g,deg,5h,plusmn,5i,sup2,5j,sup3,5k,acute,' +
+    '5l,micro,5m,para,5n,middot,5o,cedil,5p,sup1,5q,ordm,5r,raquo,5s,frac14,5t,frac12,5u,frac34,' +
+    '5v,iquest,60,Agrave,61,Aacute,62,Acirc,63,Atilde,64,Auml,65,Aring,66,AElig,67,Ccedil,' +
+    '68,Egrave,69,Eacute,6a,Ecirc,6b,Euml,6c,Igrave,6d,Iacute,6e,Icirc,6f,Iuml,6g,ETH,6h,Ntilde,' +
+    '6i,Ograve,6j,Oacute,6k,Ocirc,6l,Otilde,6m,Ouml,6n,times,6o,Oslash,6p,Ugrave,6q,Uacute,' +
+    '6r,Ucirc,6s,Uuml,6t,Yacute,6u,THORN,6v,szlig,70,agrave,71,aacute,72,acirc,73,atilde,74,auml,' +
+    '75,aring,76,aelig,77,ccedil,78,egrave,79,eacute,7a,ecirc,7b,euml,7c,igrave,7d,iacute,7e,icirc,' +
+    '7f,iuml,7g,eth,7h,ntilde,7i,ograve,7j,oacute,7k,ocirc,7l,otilde,7m,ouml,7n,divide,7o,oslash,' +
+    '7p,ugrave,7q,uacute,7r,ucirc,7s,uuml,7t,yacute,7u,thorn,7v,yuml,ci,fnof,sh,Alpha,si,Beta,' +
+    'sj,Gamma,sk,Delta,sl,Epsilon,sm,Zeta,sn,Eta,so,Theta,sp,Iota,sq,Kappa,sr,Lambda,ss,Mu,' +
+    'st,Nu,su,Xi,sv,Omicron,t0,Pi,t1,Rho,t3,Sigma,t4,Tau,t5,Upsilon,t6,Phi,t7,Chi,t8,Psi,' +
+    't9,Omega,th,alpha,ti,beta,tj,gamma,tk,delta,tl,epsilon,tm,zeta,tn,eta,to,theta,tp,iota,' +
+    'tq,kappa,tr,lambda,ts,mu,tt,nu,tu,xi,tv,omicron,u0,pi,u1,rho,u2,sigmaf,u3,sigma,u4,tau,' +
+    'u5,upsilon,u6,phi,u7,chi,u8,psi,u9,omega,uh,thetasym,ui,upsih,um,piv,812,bull,816,hellip,' +
+    '81i,prime,81j,Prime,81u,oline,824,frasl,88o,weierp,88h,image,88s,real,892,trade,89l,alefsym,' +
+    '8cg,larr,8ch,uarr,8ci,rarr,8cj,darr,8ck,harr,8dl,crarr,8eg,lArr,8eh,uArr,8ei,rArr,8ej,dArr,' +
+    '8ek,hArr,8g0,forall,8g2,part,8g3,exist,8g5,empty,8g7,nabla,8g8,isin,8g9,notin,8gb,ni,8gf,prod,' +
+    '8gh,sum,8gi,minus,8gn,lowast,8gq,radic,8gt,prop,8gu,infin,8h0,ang,8h7,and,8h8,or,8h9,cap,8ha,cup,' +
+    '8hb,int,8hk,there4,8hs,sim,8i5,cong,8i8,asymp,8j0,ne,8j1,equiv,8j4,le,8j5,ge,8k2,sub,8k3,sup,8k4,' +
+    'nsub,8k6,sube,8k7,supe,8kl,oplus,8kn,otimes,8l5,perp,8m5,sdot,8o8,lceil,8o9,rceil,8oa,lfloor,8ob,' +
+    'rfloor,8p9,lang,8pa,rang,9ea,loz,9j0,spades,9j3,clubs,9j5,hearts,9j6,diams,ai,OElig,aj,oelig,b0,' +
+    'Scaron,b1,scaron,bo,Yuml,m6,circ,ms,tilde,802,ensp,803,emsp,809,thinsp,80c,zwnj,80d,zwj,80e,lrm,' +
+    '80f,rlm,80j,ndash,80k,mdash,80o,lsquo,80p,rsquo,80q,sbquo,80s,ldquo,80t,rdquo,80u,bdquo,810,dagger,' +
+    '811,Dagger,81g,permil,81p,lsaquo,81q,rsaquo,85c,euro', 32);
+
+
+//Some basic mappings for attributes and default values.
+const STYLES = {
+    "strokeStyle": {
+        svgAttr: "stroke", //corresponding svg attribute
+        canvas: "#000000", //canvas default
+        svg: "none",       //svg default
+        apply: "stroke"    //apply on stroke() or fill()
+    },
+    "fillStyle": {
+        svgAttr: "fill",
+        canvas: "#000000",
+        svg: null, //svg default is black, but we need to special case this to handle canvas stroke without fill
+        apply: "fill"
+    },
+    "lineCap": {
+        svgAttr: "stroke-linecap",
+        canvas: "butt",
+        svg: "butt",
+        apply: "stroke"
+    },
+    "lineJoin": {
+        svgAttr: "stroke-linejoin",
+        canvas: "miter",
+        svg: "miter",
+        apply: "stroke"
+    },
+    "miterLimit": {
+        svgAttr: "stroke-miterlimit",
+        canvas: 10,
+        svg: 4,
+        apply: "stroke"
+    },
+    "lineWidth": {
+        svgAttr: "stroke-width",
+        canvas: 1,
+        svg: 1,
+        apply: "stroke"
+    },
+    "globalAlpha": {
+        svgAttr: "opacity",
+        canvas: 1,
+        svg: 1,
+        apply: "fill stroke"
+    },
+    "font": {
+        //font converts to multiple svg attributes, there is custom logic for this
+        canvas: "10px sans-serif"
+    },
+    "shadowColor": {
+        canvas: "#000000"
+    },
+    "shadowOffsetX": {
+        canvas: 0
+    },
+    "shadowOffsetY": {
+        canvas: 0
+    },
+    "shadowBlur": {
+        canvas: 0
+    },
+    "textAlign": {
+        canvas: "start"
+    },
+    "textBaseline": {
+        canvas: "alphabetic"
+    },
+    "lineDash": {
+        svgAttr: "stroke-dasharray",
+        canvas: [],
+        svg: null,
+        apply: "stroke"
+    }
+};
+
+/**
+ *
+ * @param gradientNode - reference to the gradient
+ * @constructor
+ */
+class CanvasGradient {
+    constructor(gradientNode, ctx) {
+        this.__root = gradientNode;
+        this.__ctx = ctx;
+    }
+
+    /**
+     * Adds a color stop to the gradient root
+     */
+    addColorStop(offset, color) {
+        var stop = this.__ctx.__createElement("stop"), regex, matches;
+        stop.setAttribute("offset", offset);
+        if (color && color.indexOf("rgba") !== -1) {
+            //separate alpha value, since webkit can't handle it
+            regex = /rgba\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d?\.?\d*)\s*\)/gi;
+            matches = regex.exec(color);
+            stop.setAttribute("stop-color", format("rgb({r},{g},{b})", {r: matches[1], g: matches[2], b: matches[3]}));
+            stop.setAttribute("stop-opacity", matches[4]);
+        } else {
+            stop.setAttribute("stop-color", color);
+        }
+        this.__root.appendChild(stop);
+    }
+}
+
+class CanvasPattern {
+    constructor(pattern, ctx) {
+        this.__root = pattern;
+        this.__ctx = ctx;
+    }
+}
+
+/**
+ * The mock canvas context
+ * @param config - options include:
+ * ctx - existing Context2D to wrap around
+ * width - width of your canvas (defaults to 500)
+ * height - height of your canvas (defaults to 500)
+ * enableMirroring - enables canvas mirroring (get image data) (defaults to false)
+ * document - the document object (defaults to the current document)
+ */
+class ctx {
+    constructor(config) {
+
+        if (!(this instanceof ctx)) {
+            //did someone call this without new?
+            return new ctx(config)
+        }
+
+        // clone config
+        this.config = config;
+
+        //setup options
+        this.width = config.width;
+        this.height = config.height;
+        this.enableMirroring = config.enableMirroring || false;
+
+        this.canvas = this;   ///point back to this instance!
+        this.__document = document;
+
+        // allow passing in an existing context to wrap around
+        // if a context is passed in, we know a canvas already exist
+        if (config.ctx) {
+            this.__ctx = config.ctx;
+        } else {
+            this.__canvas = this.__document.createElement("canvas");
+            this.__ctx = this.__canvas.getContext("2d");
+        }
+
+        // give this canvas a type
+        this.isSVG = true;
+
+        this.__setDefaultStyles();
+        this.__stack = [this.__getStyleState()];
+        this.__groupStack = [];
+
+        // root svg element
+        this.__root = this.__createElement("svg");
+        this.__root.setAttribute("width", this.width);
+        this.__root.setAttribute("height", this.height);
+
+        // allow contents to overflow svg bbox
+        this.__root.setAttribute('overflow', 'visible');
+
+        // viewbox
+        if (config.viewbox) {
+            const str = config.viewbox.x + ' ' + config.viewbox.y + ' ' + config.viewbox.width + ' ' + config.viewbox.height;
+            this.__root.setAttribute("viewBox", str);
+
+            this.viewbox = config.viewbox;
+        }
+
+        // make sure we don't generate the same ids in defs
+        this.__ids = {};
+
+        // defs
+        this.__defs = this.__createElement("defs");
+        this.__root.appendChild(this.__defs);
+
+        this.multiLocusGap = config.multiLocusGap;
+
+        // svg background color
+        let backdropConfig =
+            {
+                id: 'svg_output_backdrop',
+                width: '100%',
+                height: '100%',
+                fill: config.backdropColor || 'white'
+            };
+
+        let backdropRect = this.__createElement('rect', backdropConfig);
+        this.__root.appendChild(backdropRect);
+
+        // root group
+        this.__rootGroup = this.__createElement('g', {id: 'root-group'});
+        this.__root.appendChild(this.__rootGroup);
+
+        // point current element to root group
+        this.__currentElement = this.__rootGroup;
+    }
+
+    setWidth(width) {
+
+        this.width = width;
+        this.__root.setAttribute("width", this.width);
+
+        const str = this.config.viewbox.x + ' ' + this.config.viewbox.y + ' ' + width + ' ' + this.config.viewbox.height;
+        this.__root.setAttribute("viewBox", str);
+
+    };
+
+    setHeight(height) {
+
+        this.height = height;
+        this.__root.setAttribute("height", this.height);
+
+        const str = this.config.viewbox.x + ' ' + this.config.viewbox.y + ' ' + this.config.viewbox.width + ' ' + height;
+        this.__root.setAttribute("viewBox", str);
+
+    };
+
+    /**
+     * Creates the specified svg element
+     * @private
+     */
+    __createElement(elementName, properties, resetFill) {
+
+        if (typeof properties === "undefined") {
+            properties = {};
+        }
+
+        let element = this.__document.createElementNS("http://www.w3.org/2000/svg", elementName);
+
+        if (resetFill) {
+            //if fill or stroke is not specified, the svg element should not display. By default SVG's fill is black.
+            element.setAttribute("fill", "none");
+            element.setAttribute("stroke", "none");
+        }
+
+        for (let key of Object.keys(properties)) {
+            element.setAttribute(key, properties[key]);
+        }
+
+        return element
+    };
+
+    /**
+     * Applies default canvas styles to the context
+     * @private
+     */
+    __setDefaultStyles() {
+        //default 2d canvas context properties see:http://www.w3.org/TR/2dcontext/
+        var keys = Object.keys(STYLES), i, key;
+        for (i = 0; i < keys.length; i++) {
+            key = keys[i];
+            this[key] = STYLES[key].canvas;
+        }
+    };
+
+    /**
+     * Applies styles on restore
+     * @param styleState
+     * @private
+     */
+    __applyStyleState(styleState) {
+        var keys = Object.keys(styleState), i, key;
+        for (i = 0; i < keys.length; i++) {
+            key = keys[i];
+            this[key] = styleState[key];
+        }
+    };
+
+    /**
+     * Gets the current style state
+     * @return {Object}
+     * @private
+     */
+    __getStyleState() {
+        var i, styleState = {}, keys = Object.keys(STYLES), key;
+        for (i = 0; i < keys.length; i++) {
+            key = keys[i];
+            styleState[key] = this[key];
+        }
+        return styleState
+    };
+
+    /**
+     * Apples the current styles to the current SVG element. On "ctx.fill" or "ctx.stroke"
+     * @param type
+     * @private
+     */
+    __applyStyleToCurrentElement(type) {
+        var currentElement = this.__currentElement;
+        var currentStyleGroup = this.__currentElementsToStyle;
+        if (currentStyleGroup) {
+            currentElement.setAttribute(type, "");
+            currentElement = currentStyleGroup.element;
+            currentStyleGroup.children.forEach(function (node) {
+                node.setAttribute(type, "");
+            });
+        }
+
+        var keys = Object.keys(STYLES), i, style, value, id, regex, matches;
+        for (i = 0; i < keys.length; i++) {
+            style = STYLES[keys[i]];
+            value = this[keys[i]];
+            if (style.apply) {
+                //is this a gradient or pattern?
+                if (value instanceof CanvasPattern) {
+                    //pattern
+                    if (value.__ctx) {
+                        //copy over defs
+                        while (value.__ctx.__defs.childNodes.length) {
+                            id = value.__ctx.__defs.childNodes[0].getAttribute("id");
+                            this.__ids[id] = id;
+                            this.__defs.appendChild(value.__ctx.__defs.childNodes[0]);
+                        }
+                    }
+                    currentElement.setAttribute(style.apply, format("url(#{id})", {id: value.__root.getAttribute("id")}));
+                } else if (value instanceof CanvasGradient) {
+                    //gradient
+                    currentElement.setAttribute(style.apply, format("url(#{id})", {id: value.__root.getAttribute("id")}));
+                } else if (style && style.apply.indexOf(type) !== -1 && style.svg !== value) {
+                    if ((style.svgAttr === "stroke" || style.svgAttr === "fill") && value && value.indexOf("rgba") !== -1) {
+                        //separate alpha value, since illustrator can't handle it
+                        regex = /rgba\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d?\.?\d*)\s*\)/gi;
+                        matches = regex.exec(value);
+                        currentElement.setAttribute(style.svgAttr, format("rgb({r},{g},{b})", {
+                            r: matches[1],
+                            g: matches[2],
+                            b: matches[3]
+                        }));
+                        //should take globalAlpha here
+                        var opacity = matches[4];
+                        var globalAlpha = this.globalAlpha;
+                        if (globalAlpha != null) {
+                            opacity *= globalAlpha;
+                        }
+                        currentElement.setAttribute(style.svgAttr + "-opacity", opacity);
+                    } else {
+                        var attr = style.svgAttr;
+                        if (keys[i] === 'globalAlpha') {
+                            attr = type + '-' + style.svgAttr;
+                            if (currentElement.getAttribute(attr)) {
+                                //fill-opacity or stroke-opacity has already been set by stroke or fill.
+                                continue
+                            }
+                        }
+                        //otherwise only update attribute if right type, and not svg default
+                        currentElement.setAttribute(attr, value);
+                    }
+                }
+            }
+        }
+    };
+
+    /**
+     * Will return the closest group or svg node. May return the current element.
+     * @private
+     */
+    __closestGroupOrSvg(node) {
+        node = node || this.__currentElement;
+        if (node.nodeName === "g" || node.nodeName === "svg") {
+            return node
+        } else {
+            return this.__closestGroupOrSvg(node.parentNode)
+        }
+    };
+
+    /**
+     * Returns the serialized value of the svg so far
+     * @param fixNamedEntities - Standalone SVG doesn't support named entities, which document.createTextNode encodes.
+     *                           If true, we attempt to find all named entities and encode it as a numeric entity.
+     * @return serialized svg
+     */
+    getSerializedSvg(fixNamedEntities) {
+        var serialized = new XMLSerializer().serializeToString(this.__root),
+            keys, i, key, value, regexp;
+
+        //IE search for a duplicate xmnls because they didn't implement setAttributeNS correctly
+        // xmlns = /xmlns="http:\/\/www\.w3\.org\/2000\/svg".+xmlns="http:\/\/www\.w3\.org\/2000\/svg/gi;
+        // if (xmlns.test(serialized)) {
+        //     serialized = serialized.replace('xmlns="http://www.w3.org/2000/svg','xmlns:xlink="http://www.w3.org/1999/xlink');
+        // }
+
+        if (fixNamedEntities) {
+            keys = Object.keys(namedEntities);
+            //loop over each named entity and replace with the proper equivalent.
+            for (i = 0; i < keys.length; i++) {
+                key = keys[i];
+                value = namedEntities[key];
+                regexp = new RegExp(key, "gi");
+                if (regexp.test(serialized)) {
+                    serialized = serialized.replace(regexp, value);
+                }
+            }
+        }
+
+        return serialized
+    };
+
+
+    /**
+     * Returns the root svg
+     * @return
+     */
+    getSvg() {
+        return this.__root
+    };
+
+    /**
+     * Will generate a group tag.
+     */
+    saveWithTranslationAndClipRect(id, tx, ty, width, height, clipYOffset) {
+
+        // clip rect
+        const clip_id = `${id}_clip_rect`;
+        let clipPath = this.__createElement('clipPath', {id: clip_id});
+
+        this.__defs.appendChild(clipPath);
+
+        const config =
+            {
+                x: '0',
+                y: clipYOffset.toString(),
+                width: width.toString(),
+                height: height.toString()
+            };
+
+        clipPath.appendChild(this.__createElement('rect', config));
+
+        const group = this.__createElement("g");
+        group.setAttribute('transform', format('translate({x},{y})', {x: tx, y: ty}));
+        group.setAttribute('clip-path', format('url(#{id})', {id: clip_id}));
+
+        const parent = this.__closestGroupOrSvg();
+        parent.appendChild(group);
+        this.__groupStack.push(parent);
+
+        this.__currentElement = group;
+        this.__stack.push(this.__getStyleState());
+    };
+
+    save() {
+        var group = this.__createElement("g");
+        var parent = this.__closestGroupOrSvg();
+        this.__groupStack.push(parent);
+        parent.appendChild(group);
+        this.__currentElement = group;
+        this.__stack.push(this.__getStyleState());
+    };
+
+    /**
+     * Sets current element to parent, or just root if already root
+     */
+    restore() {
+        this.__currentElement = this.__groupStack.pop();
+        this.__currentElementsToStyle = null;
+        //Clearing canvas will make the poped group invalid, currentElement is set to the root group node.
+        if (!this.__currentElement) {
+            this.__currentElement = this.__root.childNodes[1];
+        }
+        var state = this.__stack.pop();
+        this.__applyStyleState(state);
+    };
+
+    /**
+     * Helper method to add transform
+     * @private
+     */
+    __addTransform(t) {
+        //if the current element has siblings, add another group
+        var parent = this.__closestGroupOrSvg();
+        if (parent.childNodes.length > 0) {
+            if (this.__currentElement.nodeName === "path") {
+                if (!this.__currentElementsToStyle) this.__currentElementsToStyle = {element: parent, children: []};
+                this.__currentElementsToStyle.children.push(this.__currentElement);
+                this.__applyCurrentDefaultPath();
+            }
+
+            var group = this.__createElement("g");
+            parent.appendChild(group);
+            this.__currentElement = group;
+        }
+
+        var transform = this.__currentElement.getAttribute("transform");
+        if (transform) {
+            transform += " ";
+        } else {
+            transform = "";
+        }
+        transform += t;
+        this.__currentElement.setAttribute("transform", transform);
+    };
+
+    addTrackGroupWithTranslationAndClipRect(id, tx, ty, width, height, clipYOffset) {
+
+        // clip rect
+        const clip_id = id + '_clip_rect';
+        let clipPath = this.__createElement('clipPath', {id: clip_id});
+
+        this.__defs.appendChild(clipPath);
+        clipPath.appendChild(this.__createElement('rect', {
+            x: '0',
+            y: clipYOffset.toString(),
+            width: width.toString(),
+            height: height.toString()
+        }));
+
+        let group = this.__createElement('g');
+        this.__rootGroup.appendChild(group);
+
+        group.setAttribute('transform', format('translate({x},{y})', {x: tx, y: ty}));
+        group.setAttribute('id', (id + '_group'));
+
+        // add clip rect
+        group.setAttribute('clip-path', format('url(#{id})', {id: clip_id}));
+
+        this.__currentElement = group;
+    };
+
+    /**
+     *  scales the current element
+     */
+    scale(x, y) {
+        if (y === undefined) {
+            y = x;
+        }
+        this.__addTransform(format("scale({x},{y})", {x: x, y: y}));
+    };
+
+    /**
+     * rotates the current element
+     */
+    rotate(angle) {
+        var degrees = (angle * 180 / Math.PI);
+        this.__addTransform(format("rotate({angle},{cx},{cy})", {angle: degrees, cx: 0, cy: 0}));
+    };
+
+    /**
+     * translates the current element
+     */
+    translate(x, y) {
+        this.__addTransform(format("translate({x},{y})", {x: x, y: y}));
+    };
+
+    /**
+     * applies a transform to the current element
+     */
+    transform(a, b, c, d, e, f) {
+        this.__addTransform(format("matrix({a},{b},{c},{d},{e},{f})", {a: a, b: b, c: c, d: d, e: e, f: f}));
+    };
+
+    /**
+     * Create a new Path Element
+     */
+    beginPath() {
+        var path, parent;
+
+        // Note that there is only one current default path, it is not part of the drawing state.
+        // See also: https://html.spec.whatwg.org/multipage/scripting.html#current-default-path
+        this.__currentDefaultPath = "";
+        this.__currentPosition = {};
+
+        path = this.__createElement("path", {}, true);
+        parent = this.__closestGroupOrSvg();
+        parent.appendChild(path);
+        this.__currentElement = path;
+    };
+
+    /**
+     * Helper function to apply currentDefaultPath to current path element
+     * @private
+     */
+    __applyCurrentDefaultPath() {
+        var currentElement = this.__currentElement;
+        if (currentElement.nodeName === "path") {
+            currentElement.setAttribute("d", this.__currentDefaultPath);
+        } else {
+            console.error("Attempted to apply path command to node", currentElement.nodeName);
+        }
+    };
+
+    /**
+     * Helper function to add path command
+     * @private
+     */
+    __addPathCommand(command) {
+        this.__currentDefaultPath += " ";
+        this.__currentDefaultPath += command;
+    };
+
+    /**
+     * Adds the move command to the current path element,
+     * if the currentPathElement is not empty create a new path element
+     */
+    moveTo(x, y) {
+        if (this.__currentElement.nodeName !== "path") {
+            this.beginPath();
+        }
+
+        // creates a new subpath with the given point
+        this.__currentPosition = {x: x, y: y};
+        this.__addPathCommand(format("M {x} {y}", {x: x, y: y}));
+    };
+
+    /**
+     * Closes the current path
+     */
+    closePath() {
+        if (this.__currentDefaultPath) {
+            this.__addPathCommand("Z");
+        }
+    };
+
+    /**
+     * Adds a line to command
+     */
+    lineTo(x, y) {
+        this.__currentPosition = {x: x, y: y};
+        if (this.__currentDefaultPath && this.__currentDefaultPath.indexOf('M') > -1) {
+            this.__addPathCommand(format("L {x} {y}", {x: x, y: y}));
+        } else {
+            this.__addPathCommand(format("M {x} {y}", {x: x, y: y}));
+        }
+    };
+
+    /**
+     * Add a bezier command
+     */
+    bezierCurveTo(cp1x, cp1y, cp2x, cp2y, x, y) {
+        this.__currentPosition = {x: x, y: y};
+        this.__addPathCommand(format("C {cp1x} {cp1y} {cp2x} {cp2y} {x} {y}",
+            {cp1x: cp1x, cp1y: cp1y, cp2x: cp2x, cp2y: cp2y, x: x, y: y}));
+    };
+
+    /**
+     * Adds a quadratic curve to command
+     */
+    quadraticCurveTo(cpx, cpy, x, y) {
+        this.__currentPosition = {x: x, y: y};
+        this.__addPathCommand(format("Q {cpx} {cpy} {x} {y}", {cpx: cpx, cpy: cpy, x: x, y: y}));
+    };
+
+    /**
+     * Adds the arcTo to the current path
+     *
+     * @see http://www.w3.org/TR/2015/WD-2dcontext-20150514/#dom-context-2d-arcto
+     */
+    arcTo(x1, y1, x2, y2, radius) {
+        // Let the point (x0, y0) be the last point in the subpath.
+        var x0 = this.__currentPosition && this.__currentPosition.x;
+        var y0 = this.__currentPosition && this.__currentPosition.y;
+
+        // First ensure there is a subpath for (x1, y1).
+        if (typeof x0 == "undefined" || typeof y0 == "undefined") {
+            return
+        }
+
+        // Negative values for radius must cause the implementation to throw an IndexSizeError exception.
+        if (radius < 0) {
+            throw new Error("IndexSizeError: The radius provided (" + radius + ") is negative.")
+        }
+
+        // If the point (x0, y0) is equal to the point (x1, y1),
+        // or if the point (x1, y1) is equal to the point (x2, y2),
+        // or if the radius radius is zero,
+        // then the method must add the point (x1, y1) to the subpath,
+        // and connect that point to the previous point (x0, y0) by a straight line.
+        if (((x0 === x1) && (y0 === y1))
+            || ((x1 === x2) && (y1 === y2))
+            || (radius === 0)) {
+            this.lineTo(x1, y1);
+            return
+        }
+
+        // Otherwise, if the points (x0, y0), (x1, y1), and (x2, y2) all lie on a single straight line,
+        // then the method must add the point (x1, y1) to the subpath,
+        // and connect that point to the previous point (x0, y0) by a straight line.
+        var unit_vec_p1_p0 = normalize([x0 - x1, y0 - y1]);
+        var unit_vec_p1_p2 = normalize([x2 - x1, y2 - y1]);
+        if (unit_vec_p1_p0[0] * unit_vec_p1_p2[1] === unit_vec_p1_p0[1] * unit_vec_p1_p2[0]) {
+            this.lineTo(x1, y1);
+            return
+        }
+
+        // Otherwise, let The Arc be the shortest arc given by circumference of the circle that has radius radius,
+        // and that has one point tangent to the half-infinite line that crosses the point (x0, y0) and ends at the point (x1, y1),
+        // and that has a different point tangent to the half-infinite line that ends at the point (x1, y1), and crosses the point (x2, y2).
+        // The points at which this circle touches these two lines are called the start and end tangent points respectively.
+
+        // note that both vectors are unit vectors, so the length is 1
+        var cos = (unit_vec_p1_p0[0] * unit_vec_p1_p2[0] + unit_vec_p1_p0[1] * unit_vec_p1_p2[1]);
+        var theta = Math.acos(Math.abs(cos));
+
+        // Calculate origin
+        var unit_vec_p1_origin = normalize([
+            unit_vec_p1_p0[0] + unit_vec_p1_p2[0],
+            unit_vec_p1_p0[1] + unit_vec_p1_p2[1]
+        ]);
+        var len_p1_origin = radius / Math.sin(theta / 2);
+        var x = x1 + len_p1_origin * unit_vec_p1_origin[0];
+        var y = y1 + len_p1_origin * unit_vec_p1_origin[1];
+
+        // Calculate start angle and end angle
+        // rotate 90deg clockwise (note that y axis points to its down)
+        var unit_vec_origin_start_tangent = [
+            -unit_vec_p1_p0[1],
+            unit_vec_p1_p0[0]
+        ];
+        // rotate 90deg counter clockwise (note that y axis points to its down)
+        var unit_vec_origin_end_tangent = [
+            unit_vec_p1_p2[1],
+            -unit_vec_p1_p2[0]
+        ];
+        var getAngle = function (vector) {
+            // get angle (clockwise) between vector and (1, 0)
+            var x = vector[0];
+            var y = vector[1];
+            if (y >= 0) { // note that y axis points to its down
+                return Math.acos(x)
+            } else {
+                return -Math.acos(x)
+            }
+        };
+        var startAngle = getAngle(unit_vec_origin_start_tangent);
+        var endAngle = getAngle(unit_vec_origin_end_tangent);
+
+        // Connect the point (x0, y0) to the start tangent point by a straight line
+        this.lineTo(x + unit_vec_origin_start_tangent[0] * radius,
+            y + unit_vec_origin_start_tangent[1] * radius);
+
+        // Connect the start tangent point to the end tangent point by arc
+        // and adding the end tangent point to the subpath.
+        this.arc(x, y, radius, startAngle, endAngle);
+    };
+
+    /**
+     * Sets the stroke property on the current element
+     */
+    stroke() {
+        if (this.__currentElement.nodeName === "path") {
+            this.__currentElement.setAttribute("paint-order", "fill stroke markers");
+        }
+        this.__applyCurrentDefaultPath();
+        this.__applyStyleToCurrentElement("stroke");
+    };
+
+    /**
+     * Sets fill properties on the current element
+     */
+    fill() {
+        if (this.__currentElement.nodeName === "path") {
+            this.__currentElement.setAttribute("paint-order", "stroke fill markers");
+        }
+        this.__applyCurrentDefaultPath();
+        this.__applyStyleToCurrentElement("fill");
+    };
+
+    /**
+     *  Adds a rectangle to the path.
+     */
+    rect(x, y, width, height) {
+        if (this.__currentElement.nodeName !== "path") {
+            this.beginPath();
+        }
+        this.moveTo(x, y);
+        this.lineTo(x + width, y);
+        this.lineTo(x + width, y + height);
+        this.lineTo(x, y + height);
+        this.lineTo(x, y);
+        this.closePath();
+    };
+
+
+    /**
+     * adds a rectangle element
+     */
+    fillRect(x, y, width, height) {
+
+        if (height < 0) {
+            y += height;
+            height = -height;
+        }
+        if (width < 0) {
+            x += width;
+            width = -width;
+        }
+        // See if rect intersects current viewbox
+        var r2 = {
+            x: x,
+            y: y,
+            width: width,
+            height: height
+        };
+
+        if (this.viewbox) {
+            if (!intersectRect(this.viewbox, r2)) {
+                return
+            }
+        }
+
+        var rect, parent;
+        rect = this.__createElement("rect", r2, true);
+        parent = this.__closestGroupOrSvg();
+        parent.appendChild(rect);
+        this.__currentElement = rect;
+        this.__applyStyleToCurrentElement("fill");
+    };
+
+    /**
+     * Draws a rectangle with no fill
+     * @param x
+     * @param y
+     * @param width
+     * @param height
+     */
+    strokeRect(x, y, width, height) {
+        var rect, parent;
+        rect = this.__createElement("rect", {
+            x: x,
+            y: y,
+            width: width,
+            height: height
+        }, true);
+        parent = this.__closestGroupOrSvg();
+        parent.appendChild(rect);
+        this.__currentElement = rect;
+        this.__applyStyleToCurrentElement("stroke");
+    };
+
+    // stroke ellipse
+    strokeEllipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW) {
+        this.__ellipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW, 'stroke');
+    }
+
+    // fill ellipse
+    fillEllipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW) {
+        this.__ellipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW, 'fill');
+    }
+
+    // ellipse helper
+    __ellipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW, style) {
+
+        const config =
+            {
+                cx,
+                cy,
+                rx,
+                ry
+            };
+        const element = this.__createElement('ellipse', config, true);
+        const parent = this.__closestGroupOrSvg();
+        parent.appendChild(element);
+        this.__currentElement = element;
+        this.__applyStyleToCurrentElement(style);
+    }
+
+    /**
+     * Clear entire canvas:
+     * 1. save current transforms
+     * 2. remove all the childNodes of the root g element
+     */
+    __clearCanvas() {
+        var current = this.__closestGroupOrSvg(),
+            transform = current.getAttribute("transform");
+        var rootGroup = this.__root.childNodes[1];
+        var childNodes = rootGroup.childNodes;
+        for (var i = childNodes.length - 1; i >= 0; i--) {
+            if (childNodes[i]) {
+                rootGroup.removeChild(childNodes[i]);
+            }
+        }
+        this.__currentElement = rootGroup;
+        //reset __groupStack as all the child group nodes are all removed.
+        this.__groupStack = [];
+        if (transform) {
+            this.__addTransform(transform);
+        }
+    };
+
+    /**
+     * "Clears" a canvas by just drawing a white rectangle in the current group.
+     */
+    clearRect(x, y, width, height) {
+        //clear entire canvas
+        if (x === 0 && y === 0 && width === this.width && height === this.height) {
+            this.__clearCanvas();
+            return
+        }
+        var rect, parent = this.__closestGroupOrSvg();
+        rect = this.__createElement("rect", {
+            x: x,
+            y: y,
+            width: width,
+            height: height,
+            fill: "#FFFFFF"
+        }, true);
+        parent.appendChild(rect);
+    };
+
+    /**
+     * Adds a linear gradient to a defs tag.
+     * Returns a canvas gradient object that has a reference to it's parent def
+     */
+    createLinearGradient(x1, y1, x2, y2) {
+        var grad = this.__createElement("linearGradient", {
+            id: randomString(this.__ids),
+            x1: x1 + "px",
+            x2: x2 + "px",
+            y1: y1 + "px",
+            y2: y2 + "px",
+            "gradientUnits": "userSpaceOnUse"
+        }, false);
+        this.__defs.appendChild(grad);
+        return new CanvasGradient(grad, this)
+    };
+
+    /**
+     * Adds a radial gradient to a defs tag.
+     * Returns a canvas gradient object that has a reference to it's parent def
+     */
+    createRadialGradient(x0, y0, r0, x1, y1, r1) {
+        var grad = this.__createElement("radialGradient", {
+            id: randomString(this.__ids),
+            cx: x1 + "px",
+            cy: y1 + "px",
+            r: r1 + "px",
+            fx: x0 + "px",
+            fy: y0 + "px",
+            "gradientUnits": "userSpaceOnUse"
+        }, false);
+        this.__defs.appendChild(grad);
+        return new CanvasGradient(grad, this)
+
+    };
+
+    /**
+     * Parses the font string and returns svg mapping
+     * @private
+     */
+    __parseFont() {
+        var regex = /^\s*(?=(?:(?:[-a-z]+\s*){0,2}(italic|oblique))?)(?=(?:(?:[-a-z]+\s*){0,2}(small-caps))?)(?=(?:(?:[-a-z]+\s*){0,2}(bold(?:er)?|lighter|[1-9]00))?)(?:(?:normal|\1|\2|\3)\s*){0,3}((?:xx?-)?(?:small|large)|medium|smaller|larger|[.\d]+(?:\%|in|[cem]m|ex|p[ctx]))(?:\s*\/\s*(normal|[.\d]+(?:\%|in|[cem]m|ex|p[ctx])))?\s*([-,\'\"\sa-z0-9]+?)\s*$/i;
+        var fontPart = regex.exec(this.font);
+        var data = {
+            style: fontPart[1] || 'normal',
+            size: fontPart[4] || '10px',
+            family: fontPart[6] || 'sans-serif',
+            weight: fontPart[3] || 'normal',
+            decoration: fontPart[2] || 'normal',
+            href: null
+        };
+
+        //canvas doesn't support underline natively, but we can pass this attribute
+        if (this.__fontUnderline === "underline") {
+            data.decoration = "underline";
+        }
+
+        //canvas also doesn't support linking, but we can pass this as well
+        if (this.__fontHref) {
+            data.href = this.__fontHref;
+        }
+
+        return data
+    };
+
+    /**
+     * Helper to link text fragments
+     * @param font
+     * @param element
+     * @return {*}
+     * @private
+     */
+    __wrapTextLink(font, element) {
+        if (font.href) {
+            var a = this.__createElement("a");
+            a.setAttributeNS("http://www.w3.org/1999/xlink", "xlink:href", font.href);
+            a.appendChild(element);
+            return a
+        }
+        return element
+    };
+
+    /**
+     * Fills or strokes text
+     * @param text
+     * @param x
+     * @param y
+     * @param action - stroke or fill
+     * @private
+     */
+    __applyText(text, x, y, action) {
+        var font = this.__parseFont(),
+            parent = this.__closestGroupOrSvg(),
+            textElement = this.__createElement("text", {
+                "font-family": font.family,
+                "font-size": font.size,
+                "font-style": font.style,
+                "font-weight": font.weight,
+                "text-decoration": font.decoration,
+                "x": x,
+                "y": y,
+                "text-anchor": getTextAnchor(this.textAlign),
+                "dominant-baseline": getDominantBaseline(this.textBaseline)
+            }, true);
+
+        textElement.appendChild(this.__document.createTextNode(text));
+        this.__currentElement = textElement;
+        this.__applyStyleToCurrentElement(action);
+        parent.appendChild(this.__wrapTextLink(font, textElement));
+    };
+
+    /**
+     * Creates a text element
+     * @param text
+     * @param x
+     * @param y
+     */
+    fillText(text, x, y) {
+        this.__applyText(text, x, y, "fill");
+    };
+
+    /**
+     * Strokes text
+     * @param text
+     * @param x
+     * @param y
+     */
+    strokeText(text, x, y) {
+        this.__applyText(text, x, y, "stroke");
+    };
+
+    /**
+     * No need to implement this for svg.
+     * @param text
+     * @return {TextMetrics}
+     */
+    measureText(text) {
+        this.__ctx.font = this.font;
+        return this.__ctx.measureText(text)
+    };
+
+    /**
+     *  Arc command!
+     */
+    arc(x, y, radius, startAngle, endAngle, counterClockwise) {
+        // in canvas no circle is drawn if no angle is provided.
+        if (startAngle === endAngle) {
+            return
+        }
+        startAngle = startAngle % (2 * Math.PI);
+        endAngle = endAngle % (2 * Math.PI);
+        if (startAngle === endAngle) {
+            //circle time! subtract some of the angle so svg is happy (svg elliptical arc can't draw a full circle)
+            endAngle = ((endAngle + (2 * Math.PI)) - 0.001 * (counterClockwise ? -1 : 1)) % (2 * Math.PI);
+        }
+        var endX = x + radius * Math.cos(endAngle),
+            endY = y + radius * Math.sin(endAngle),
+            startX = x + radius * Math.cos(startAngle),
+            startY = y + radius * Math.sin(startAngle),
+            sweepFlag = counterClockwise ? 0 : 1,
+            largeArcFlag = 0,
+            diff = endAngle - startAngle;
+
+        // https://github.com/gliffy/canvas2svg/issues/4
+        if (diff < 0) {
+            diff += 2 * Math.PI;
+        }
+
+        if (counterClockwise) {
+            largeArcFlag = diff > Math.PI ? 0 : 1;
+        } else {
+            largeArcFlag = diff > Math.PI ? 1 : 0;
+        }
+
+        this.lineTo(startX, startY);
+        this.__addPathCommand(format("A {rx} {ry} {xAxisRotation} {largeArcFlag} {sweepFlag} {endX} {endY}",
+            {
+                rx: radius,
+                ry: radius,
+                xAxisRotation: 0,
+                largeArcFlag: largeArcFlag,
+                sweepFlag: sweepFlag,
+                endX: endX,
+                endY: endY
+            }));
+
+        this.__currentPosition = {x: endX, y: endY};
+    };
+
+    /**
+     * The ellipse() method creates an elliptical arc centered at (x, y) with the radii radiusX and radiusY. The path
+     * starts at startAngle and ends at endAngle, and travels in the direction given by counterclockwise (defaulting to clockwise).
+     */
+// ellipse (x, y, radiusX, radiusY, rotation, startAngle, endAngle, counterclockwise) {
+//     // TODO -- implement
+// }
+
+    /**
+     * Generates a ClipPath from the clip command.
+     */
+    clip() {
+        var group = this.__closestGroupOrSvg(),
+            clipPath = this.__createElement("clipPath"),
+            id = randomString(this.__ids),
+            newGroup = this.__createElement("g");
+
+        this.__applyCurrentDefaultPath();
+        group.removeChild(this.__currentElement);
+        clipPath.setAttribute("id", id);
+        clipPath.appendChild(this.__currentElement);
+
+        this.__defs.appendChild(clipPath);
+
+        //set the clip path to this group
+        group.setAttribute("clip-path", format("url(#{id})", {id: id}));
+
+        //clip paths can be scaled and transformed, we need to add another wrapper group to avoid later transformations
+        // to this path
+        group.appendChild(newGroup);
+
+        this.__currentElement = newGroup;
+
+    };
+
+    /**
+     * Draws a canvas, image or mock context to this canvas.
+     * Note that all svg dom manipulation uses node.childNodes rather than node.children for IE support.
+     * http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#dom-context-2d-drawimage
+     */
+    drawImage() {
+        //convert arguments to a real array
+        var args = Array.prototype.slice.call(arguments),
+            image = args[0],
+            dx, dy, dw, dh, sx = 0, sy = 0, sw, sh, parent, svg, defs, group,
+            svgImage, canvas, context, id;
+
+        if (args.length === 3) {
+            dx = args[1];
+            dy = args[2];
+            sw = image.width;
+            sh = image.height;
+            dw = sw;
+            dh = sh;
+        } else if (args.length === 5) {
+            dx = args[1];
+            dy = args[2];
+            dw = args[3];
+            dh = args[4];
+            sw = image.width;
+            sh = image.height;
+        } else if (args.length === 9) {
+            sx = args[1];
+            sy = args[2];
+            sw = args[3];
+            sh = args[4];
+            dx = args[5];
+            dy = args[6];
+            dw = args[7];
+            dh = args[8];
+        } else {
+            throw new Error("Invalid number of arguments passed to drawImage: " + arguments.length)
+        }
+
+        parent = this.__closestGroupOrSvg();
+        this.__currentElement;
+        var translateDirective = "translate(" + dx + ", " + dy + ")";
+        if (image instanceof ctx) {
+            //canvas2svg mock canvas context. In the future we may want to clone nodes instead.
+            //also I'm currently ignoring dw, dh, sw, sh, sx, sy for a mock context.
+            svg = image.getSvg().cloneNode(true);
+            if (svg.childNodes && svg.childNodes.length > 1) {
+                defs = svg.childNodes[0];
+                while (defs.childNodes.length) {
+                    id = defs.childNodes[0].getAttribute("id");
+                    this.__ids[id] = id;
+                    this.__defs.appendChild(defs.childNodes[0]);
+                }
+                group = svg.childNodes[1];
+                if (group) {
+                    //save original transform
+                    var originTransform = group.getAttribute("transform");
+                    var transformDirective;
+                    if (originTransform) {
+                        transformDirective = originTransform + " " + translateDirective;
+                    } else {
+                        transformDirective = translateDirective;
+                    }
+                    group.setAttribute("transform", transformDirective);
+                    parent.appendChild(group);
+                }
+            }
+        } else if (image.nodeName === "CANVAS" || image.nodeName === "IMG") {
+            //canvas or image
+            svgImage = this.__createElement("image");
+            svgImage.setAttribute("width", dw);
+            svgImage.setAttribute("height", dh);
+            svgImage.setAttribute("preserveAspectRatio", "none");
+
+            if (sx || sy || sw !== image.width || sh !== image.height) {
+                //crop the image using a temporary canvas
+                canvas = this.__document.createElement("canvas");
+                canvas.width = dw;
+                canvas.height = dh;
+                context = canvas.getContext("2d");
+                context.drawImage(image, sx, sy, sw, sh, 0, 0, dw, dh);
+                image = canvas;
+            }
+            svgImage.setAttribute("transform", translateDirective);
+            svgImage.setAttributeNS("http://www.w3.org/1999/xlink", "xlink:href",
+                image.nodeName === "CANVAS" ? image.toDataURL() : image.getAttribute("src"));
+            parent.appendChild(svgImage);
+        }
+    };
+
+    /**
+     * Generates a pattern tag
+     */
+    createPattern(image, repetition) {
+
+        let pattern = this.__document.__createElement("pattern");
+        let id = randomString(this.__ids);
+        let img;
+
+        pattern.setAttribute("id", id);
+        pattern.setAttribute("width", image.width);
+        pattern.setAttribute("height", image.height);
+        if (image.nodeName === "CANVAS" || image.nodeName === "IMG") {
+            img = this.__createElement("image");
+            img.setAttribute("width", image.width);
+            img.setAttribute("height", image.height);
+            img.setAttributeNS("http://www.w3.org/1999/xlink", "xlink:href",
+                image.nodeName === "CANVAS" ? image.toDataURL() : image.getAttribute("src"));
+            pattern.appendChild(img);
+            this.__defs.appendChild(pattern);
+        } else if (image instanceof ctx) {
+            pattern.appendChild(image.__root.childNodes[1]);
+            this.__defs.appendChild(pattern);
+        }
+        return new CanvasPattern(pattern, this)
+    };
+
+    setLineDash(dashArray) {
+        if (dashArray && dashArray.length > 0) {
+            this.lineDash = dashArray.join(",");
+        } else {
+            this.lineDash = null;
+        }
+    };
+
+    /**
+     * Not yet implemented
+     */
+    drawFocusRing() {
+    };
+
+    createImageData() {
+    };
+
+    getImageData() {
+    };
+
+    putImageData() {
+    };
+
+    globalCompositeOperation() {
+    };
+
+    setTransform() {
+    };
+}
+
+const Cytoband = function (start, end, name, typestain) {
+    this.start = start;
+    this.end = end;
+    this.name = name;
+    this.stain = 0;
+
+    // Set the type, either p, n, or c
+    if (typestain === 'acen') {
+        this.type = 'c';
+    } else {
+        this.type = typestain.charAt(1);
+        if (this.type === 'p') {
+            this.stain = parseInt(typestain.substring(4));
+        }
+    }
+};
+
+const _version = "2.15.11";
+function version() {
+    return _version
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const DEFAULT_GENOMES_URL = "https://igv.org/genomes/genomes.json";
+const BACKUP_GENOMES_URL = "https://s3.amazonaws.com/igv.org.genomes/genomes.json";
+
+const splitLines$1 = splitLines$5;
+
+const GenomeUtils = {
+
+    loadGenome: async function (options) {
+
+        const cytobandUrl = options.cytobandURL;
+        const aliasURL = options.aliasURL;
+        const sequence = await loadFasta(options);
+
+        let aliases;
+        if (aliasURL) {
+            aliases = await loadAliases(aliasURL, sequence.config);
+        }
+
+        const genome = new Genome(options, sequence, aliases);
+
+        // Delay loading cytbands untils after genome initialization to use chromosome aliases (1 vs chr1, etc).
+        if (cytobandUrl) {
+            genome.cytobands = await loadCytobands(cytobandUrl, sequence.config, genome);
+        }
+
+        return genome
+    },
+
+    initializeGenomes: async function (config) {
+
+        if (!GenomeUtils.KNOWN_GENOMES) {
+
+            const table = {};
+
+            // Get default genomes
+            if (config.loadDefaultGenomes !== false) {
+                try {
+                    const url = DEFAULT_GENOMES_URL + `?randomSeed=${Math.random().toString(36)}&version=${version()}`;  // prevent caching
+                    const jsonArray = await igvxhr.loadJson(url, {timeout: 5000});
+                    processJson(jsonArray);
+                } catch (e) {
+                    console.error(e);
+                    try {
+                        const url = BACKUP_GENOMES_URL + `?randomSeed=${Math.random().toString(36)}&version=${version()}`;  // prevent caching
+                        const jsonArray = await igvxhr.loadJson(url, {});
+                        processJson(jsonArray);
+                    } catch (e) {
+                        console.error(e);
+                        console.warn("Errors loading default genome definitions.");
+                    }
+                }
+            }
+
+            // Add user-defined genomes
+            const genomeList = config.genomeList || config.genomes;
+            if (genomeList) {
+                if (typeof genomeList === 'string') {
+                    const jsonArray = await igvxhr.loadJson(genomeList, {});
+                    processJson(jsonArray);
+                } else {
+                    processJson(genomeList);
+                }
+            }
+
+            GenomeUtils.KNOWN_GENOMES = table;
+
+            function processJson(jsonArray) {
+                jsonArray.forEach(function (json) {
+                    table[json.id] = json;
+                });
+                return table
+            }
+        }
+    },
+
+    isWholeGenomeView: function (chr) {
+        return 'all' === chr.toLowerCase()
+    },
+
+    // Expand a genome id to a reference object, if needed
+    expandReference: function (alert, idOrConfig) {
+
+        // idOrConfig might be json
+        if (isString$2(idOrConfig) && idOrConfig.startsWith("{")) {
+            try {
+                idOrConfig = JSON.parse(idOrConfig);
+            } catch (e) {
+                // Apparently its not json,  could be an ID starting with "{".  Unusual but legal.
+            }
+        }
+
+        let genomeID;
+        if (isString$2(idOrConfig)) {
+            genomeID = idOrConfig;
+        } else if (idOrConfig.genome) {
+            genomeID = idOrConfig.genome;
+        } else if (idOrConfig.id !== undefined && idOrConfig.fastaURL === undefined) {
+            // Backward compatibility
+            genomeID = idOrConfig.id;
+        }
+
+        if (genomeID) {
+            const knownGenomes = GenomeUtils.KNOWN_GENOMES;
+            const reference = knownGenomes[genomeID];
+            if (!reference) {
+                alert.present(new Error(`Unknown genome id: ${genomeID}`), undefined);
+            }
+            return reference
+        } else {
+            return idOrConfig
+        }
+    }
+};
+
+
+class Genome {
+
+    constructor(config, sequence, aliases) {
+
+        this.config = config;
+        this.id = config.id || generateGenomeID(config);
+        this.sequence = sequence;
+        this.chromosomeNames = sequence.chromosomeNames;
+        this.chromosomes = sequence.chromosomes;  // An object (functions as a dictionary)
+        this.featureDB = new Map();   // Hash of name -> feature, used for search function.
+
+        this.wholeGenomeView = config.wholeGenomeView === undefined || config.wholeGenomeView;
+        if (this.wholeGenomeView && Object.keys(sequence.chromosomes).length > 1) {
+            constructWG(this, config);
+        } else {
+            this.wgChromosomeNames = sequence.chromosomeNames;
+        }
+
+        /**
+         * Return the official chromosome name for the (possibly) alias.  Deals with
+         * 1 <-> chr1,  chrM <-> MT,  IV <-> chr4, etc.
+         * @param str
+         */
+        var chrAliasTable = {},
+            self = this;
+
+
+        // The standard mappings
+        chrAliasTable["all"] = "all";
+        this.chromosomeNames.forEach(function (name) {
+            var alias = name.startsWith("chr") ? name.substring(3) : "chr" + name;
+            chrAliasTable[alias.toLowerCase()] = name;
+            if (name === "chrM") chrAliasTable["mt"] = "chrM";
+            if (name === "MT") chrAliasTable["chrm"] = "MT";
+            chrAliasTable[name.toLowerCase()] = name;
+        });
+
+        // Custom mappings
+        if (aliases) {
+            aliases.forEach(function (array) {
+                // Find the official chr name
+                var defName, i;
+
+                for (i = 0; i < array.length; i++) {
+                    if (self.chromosomes[array[i]]) {
+                        defName = array[i];
+                        break
+                    }
+                }
+
+                if (defName) {
+                    array.forEach(function (alias) {
+                        if (alias !== defName) {
+                            chrAliasTable[alias.toLowerCase()] = defName;
+                            chrAliasTable[alias] = defName;      // Should not be needed
+                        }
+                    });
+                }
+
+            });
+        }
+
+        this.chrAliasTable = chrAliasTable;
+
+    }
+
+    showWholeGenomeView() {
+        return this.config.wholeGenomeView !== false
+    }
+
+    toJSON() {
+        return Object.assign({}, this.config, {tracks: undefined})
+    }
+
+    getInitialLocus() {
+
+    }
+
+    getHomeChromosomeName() {
+        if (this.showWholeGenomeView() && this.chromosomes.hasOwnProperty("all")) {
+            return "all"
+        } else {
+            return this.chromosomeNames[0]
+
+        }
+    }
+
+    getChromosomeName(str) {
+        const chr = str ? this.chrAliasTable[str.toLowerCase()] : str;
+        return chr ? chr : str
+    }
+
+    getChromosome(chr) {
+        chr = this.getChromosomeName(chr);
+        return this.chromosomes[chr]
+    }
+
+    getCytobands(chr) {
+        return this.cytobands ? this.cytobands[chr] : null
+    }
+
+    getLongestChromosome() {
+
+        var longestChr,
+            chromosomes = this.chromosomes;
+        for (let key in chromosomes) {
+            if (chromosomes.hasOwnProperty(key)) {
+                var chr = chromosomes[key];
+                if (longestChr === undefined || chr.bpLength > longestChr.bpLength) {
+                    longestChr = chr;
+                }
+            }
+            return longestChr
+        }
+    }
+
+    getChromosomes() {
+        return this.chromosomes
+    }
+
+    /**
+     * Return the genome coordinate in kb for the give chromosome and position.
+     * NOTE: This might return undefined if the chr is filtered from whole genome view.
+     */
+    getGenomeCoordinate(chr, bp) {
+
+        var offset = this.getCumulativeOffset(chr);
+        if (offset === undefined) return undefined
+
+        return offset + bp
+    }
+
+    /**
+     * Return the chromosome and coordinate in bp for the given genome coordinate
+     */
+    getChromosomeCoordinate(genomeCoordinate) {
+
+        if (this.cumulativeOffsets === undefined) {
+            this.cumulativeOffsets = computeCumulativeOffsets.call(this);
+        }
+
+        let lastChr = undefined;
+        let lastCoord = 0;
+        for (let name of this.wgChromosomeNames) {
+
+            const cumulativeOffset = this.cumulativeOffsets[name];
+            if (cumulativeOffset > genomeCoordinate) {
+                const position = genomeCoordinate - lastCoord;
+                return {chr: lastChr, position: position}
+            }
+            lastChr = name;
+            lastCoord = cumulativeOffset;
+        }
+
+        // If we get here off the end
+        return {chr: this.wgChromosomeNames[this.wgChromosomeNames.length - 1], position: 0}
+
+    };
+
+
+    /**
+     * Return the offset in genome coordinates (kb) of the start of the given chromosome
+     * NOTE:  This might return undefined if the chromosome is filtered from whole genome view.
+     */
+    getCumulativeOffset(chr) {
+
+        if (this.cumulativeOffsets === undefined) {
+            this.cumulativeOffsets = computeCumulativeOffsets.call(this);
+        }
+
+        const queryChr = this.getChromosomeName(chr);
+        return this.cumulativeOffsets[queryChr]
+
+        function computeCumulativeOffsets() {
+
+            let self = this;
+            let acc = {};
+            let offset = 0;
+            for (let name of self.wgChromosomeNames) {
+
+                acc[name] = Math.floor(offset);
+
+                const chromosome = self.getChromosome(name);
+
+                offset += chromosome.bpLength;
+            }
+
+            return acc
+        }
+    }
+
+    /**
+     * Return the nominal genome length, this is the length of the main chromosomes (no scaffolds, etc).
+     */
+    getGenomeLength() {
+
+        let self = this;
+
+        if (!this.bpLength) {
+            let bpLength = 0;
+            self.wgChromosomeNames.forEach(function (cname) {
+                let c = self.chromosomes[cname];
+                bpLength += c.bpLength;
+            });
+            this.bpLength = bpLength;
+        }
+        return this.bpLength
+    }
+
+    async getSequence(chr, start, end) {
+        chr = this.getChromosomeName(chr);
+        return this.sequence.getSequence(chr, start, end)
+    }
+
+    addFeaturesToDB(featureList, config) {
+
+        const insertFeature = (name, feature) => {
+            const current = this.featureDB.get(name);
+            if (current) {
+                feature = (feature.end - feature.start) > (current.end - current.start) ? feature : current;
+
+            }
+            this.featureDB.set(name, feature);
+        };
+
+        for (let feature of featureList) {
+            if (feature.name) {
+                insertFeature(feature.name.toUpperCase(), feature);
+            }
+            if (feature.gene && feature.gene.name) {
+                insertFeature(feature.gene.name.toUpperCase(), feature);
+            }
+
+            if (config.searchableFields) {
+                for (let f of config.searchableFields) {
+                    const value = feature.getAttributeValue(f);
+                    if (value) {
+                        if (value.indexOf(" ") > 0) {
+                            insertFeature(value.replaceAll(" ", "+").toUpperCase(), feature);
+                        } else {
+                            insertFeature(value.toUpperCase(), feature);
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+async function loadCytobands(cytobandUrl, config, genome) {
+
+    let data;
+    if (isDataURL(cytobandUrl)) {
+        const plain = decodeDataURI$1(cytobandUrl);
+        data = "";
+        const len = plain.length;
+        for (let i = 0; i < len; i++) {
+            data += String.fromCharCode(plain[i]);
+        }
+    } else {
+        data = await igvxhr.loadString(cytobandUrl, buildOptions(config));
+    }
+
+    // var bands = [],
+    //     lastChr,
+    //     n = 0,
+    //     c = 1,
+    //
+    //     len = lines.length,
+    const cytobands = {};
+    let lastChr;
+    let bands = [];
+    const lines = splitLines$1(data);
+    for (let line of lines) {
+        var tokens = line.split("\t");
+        var chr = genome.getChromosomeName(tokens[0]);
+        if (!lastChr) lastChr = chr;
+
+        if (chr !== lastChr) {
+            cytobands[lastChr] = bands;
+            bands = [];
+            lastChr = chr;
+        }
+
+        if (tokens.length === 5) {
+            //10	0	3000000	p15.3	gneg
+            var start = parseInt(tokens[1]);
+            var end = parseInt(tokens[2]);
+            var name = tokens[3];
+            var stain = tokens[4];
+            bands.push(new Cytoband(start, end, name, stain));
+        }
+    }
+
+    return cytobands
+}
+
+function loadAliases(aliasURL, config) {
+
+    return igvxhr.loadString(aliasURL, buildOptions(config))
+
+        .then(function (data) {
+
+            var lines = splitLines$1(data),
+                aliases = [];
+
+            lines.forEach(function (line) {
+                if (!line.startsWith("#") && line.length > 0) aliases.push(line.split("\t"));
+            });
+
+            return aliases
+        })
+
+}
+
+function constructWG(genome, config) {
+
+    let wgChromosomes;
+    if (config.chromosomeOrder) {
+        if (Array.isArray(config.chromosomeOrder)) {
+            genome.wgChromosomeNames = config.chromosomeOrder;
+        } else {
+            genome.wgChromosomeNames = config.chromosomeOrder.split(',').map(nm => nm.trim());
+        }
+        wgChromosomes = genome.wgChromosomeNames.map(nm => genome.chromosomes[nm]).filter(chr => chr !== undefined);
+
+    } else {
+
+        // Trim small chromosomes.
+        const lengths = Object.keys(genome.chromosomes).map(key => genome.chromosomes[key].bpLength);
+        const median = lengths.reduce((a, b) => Math.max(a, b));
+        const threshold = median / 50;
+        wgChromosomes = Object.values(genome.chromosomes).filter(chr => chr.bpLength > threshold);
+
+        // Sort chromosomes.  First segregate numeric and alpha names, sort numeric, leave alpha as is
+        const numericChromosomes = wgChromosomes.filter(chr => isDigit(chr.name.replace('chr', '')));
+        const alphaChromosomes = wgChromosomes.filter(chr => !isDigit(chr.name.replace('chr', '')));
+        numericChromosomes.sort((a, b) => Number.parseInt(a.name.replace('chr', '')) - Number.parseInt(b.name.replace('chr', '')));
+
+        const wgChromosomeNames = numericChromosomes.map(chr => chr.name);
+        for (let chr of alphaChromosomes) {
+            wgChromosomeNames.push(chr.name);
+        }
+        genome.wgChromosomeNames = wgChromosomeNames;
+    }
+
+
+    // Compute psuedo-chromosome "all"
+    const l = wgChromosomes.reduce((accumulator, currentValue) => accumulator += currentValue.bpLength, 0);
+    genome.chromosomes["all"] = {
+        name: "all",
+        bpLength: l
+    };
+
+    function isDigit(val) {
+        return /^\d+$/.test(val)
+    }
+
+}
+
+function generateGenomeID(config) {
+    if (config.id !== undefined) {
+        return config.id
+    } else if (config.fastaURL && isString$2(config.fastaURL)) {
+        return config.fastaURL
+    } else if (config.fastaURL && config.fastaURL.name) {
+        return config.fastaURL.name
+    } else {
+        return ("0000" + (Math.random() * Math.pow(36, 4) << 0).toString(36)).slice(-4)
+    }
+}
+
+/**
+ * Created by dat on 9/16/16.
+ */
+
+const NOT_LOADED_MESSAGE = 'Error loading track data';
+let lastClickTime = 0;
+let lastHoverUpdateTime = 0;
+let popupTimerID;
+
+class TrackViewport extends Viewport {
+
+    constructor(trackView, viewportColumn, referenceFrame, width) {
+        super(trackView, viewportColumn, referenceFrame, width);
+    }
+
+    initializationHelper() {
+
+        this.$spinner = $$1('<div>', {class: 'igv-loading-spinner-container'});
+        this.$viewport.append(this.$spinner);
+        this.$spinner.append($$1('<div>'));
+
+        const track = this.trackView.track;
+        if ('sequence' !== track.type) {
+            this.$zoomInNotice = this.createZoomInNotice(this.$viewport);
+        }
+
+        if (track.name && "sequence" !== track.id) {
+            this.$trackLabel = $$1('<div class="igv-track-label">');
+            this.$viewport.append(this.$trackLabel);
+            this.setTrackLabel(track.name);
+            if (false === this.browser.trackLabelsVisible) {
+                this.$trackLabel.hide();
+            }
+        }
+
+        this.stopSpinner();
+        this.addMouseHandlers();
+    }
+
+    setContentHeight(contentHeight) {
+        super.setContentHeight(contentHeight);
+        if (this.featureCache) this.featureCache.redraw = true;
+    }
+
+    setTrackLabel(label) {
+
+        this.$trackLabel.empty();
+        this.$trackLabel.html(label);
+
+        const txt = this.$trackLabel.text();
+        this.$trackLabel.attr('title', txt);
+    }
+
+    startSpinner() {
+        this.$spinner.show();
+    }
+
+    stopSpinner() {
+        if (this.$spinner) {
+            this.$spinner.hide();
+        }
+    }
+
+    /**
+     * Test to determine if we are zoomed in far enough to see features. Applicable to tracks with visibility windows.
+     *
+     * As a side effect the viewports canvas is removed if zoomed out.
+     *
+     * @returns {boolean} true if we are zoomed in past visibility window, false otherwise
+     */
+    checkZoomIn() {
+
+        const zoomedOutOfWindow = () => {
+            if (this.referenceFrame.chr.toLowerCase() === "all" && !this.trackView.track.supportsWholeGenome) {
+                return true
+            } else {
+                const visibilityWindow = this.trackView.track.visibilityWindow;
+                return (
+                    visibilityWindow !== undefined && visibilityWindow > 0 &&
+                    (this.referenceFrame.bpPerPixel * this.$viewport.width() > visibilityWindow))
+            }
+        };
+
+        if (this.trackView.track && "sequence" === this.trackView.track.type && this.referenceFrame.bpPerPixel > bppFeatureFetchThreshold) {
+            $$1(this.canvas).remove();
+            this.canvas = undefined;
+            //this.featureCache = undefined
+            return false
+        }
+
+        if (!(this.viewIsReady())) {
+            return false
+        }
+
+
+        if (zoomedOutOfWindow()) {
+
+            // Out of visibility window
+            if (this.canvas) {
+                $$1(this.canvas).remove();
+                this.canvas = undefined;
+                //this.featureCache = undefined
+            }
+            if (this.trackView.track.autoHeight) {
+                const minHeight = this.trackView.minHeight || 0;
+                this.setContentHeight(minHeight);
+            }
+            if (this.$zoomInNotice) {
+                this.$zoomInNotice.show();
+            }
+            return false
+        } else {
+            if (this.$zoomInNotice) {
+                this.$zoomInNotice.hide();
+            }
+            return true
+        }
+
+    }
+
+    /**
+     * Adjust the canvas to the current genomic state.
+     */
+    shift() {
+        const referenceFrame = this.referenceFrame;
+        if (this.canvas &&
+            this.canvas._data &&
+            this.canvas._data.referenceFrame.chr === this.referenceFrame.chr &&
+            this.canvas._data.bpPerPixel === referenceFrame.bpPerPixel) {
+            const pixelOffset = Math.round((this.canvas._data.bpStart - referenceFrame.start) / referenceFrame.bpPerPixel);
+            this.canvas.style.left = pixelOffset + "px";
+        }
+    }
+
+    /**
+     * Set the content top of the current view.  This is triggered by scrolling.   If the current canvas extent is not
+     * sufficient to cover the new vertical range repaint.
+     *
+     * @param contentTop - the "top" property of the virtual content div, 0 unless track is scrolled vertically
+     *
+     *
+     */
+    setTop(contentTop) {
+
+        super.setTop(contentTop);
+
+        if (!this.canvas) {
+            this.repaint();
+        } else {
+            // See if currently painted canvas covers the vertical range of the viewport.  If not repaint
+            const h = this.$viewport.height();
+            const vt = contentTop + this.canvas._data.pixelTop;
+            const vb = vt + this.canvas._data.pixelHeight;
+            if (vt > 0 || vb < h) {
+                this.repaint();
+            }
+        }
+
+        // Now offset backing canvas to align with the contentTop visual offset.
+        let offset = contentTop + this.canvas._data.pixelTop;
+        this.canvas.style.top = `${offset}px`;
+    }
+
+    async loadFeatures() {
+
+        const referenceFrame = this.referenceFrame;
+        const chr = referenceFrame.chr;
+
+        // Expand the requested range so we can pan a bit without reloading.  But not beyond chromosome bounds
+        const chrLength = this.browser.genome.getChromosome(chr).bpLength;
+        const pixelWidth = this.$viewport.width();// * 3;
+        const bpWidth = pixelWidth * referenceFrame.bpPerPixel;
+        const bpStart = Math.floor(Math.max(0, referenceFrame.start - bpWidth));
+        const bpEnd = Math.ceil(Math.min(chrLength, referenceFrame.start + bpWidth + bpWidth));  // Add one screen width to end
+
+        if (this.loading && this.loading.start === bpStart && this.loading.end === bpEnd) {
+            return undefined
+        }
+        this.loading = {start: bpStart, end: bpEnd};
+        this.startSpinner();
+
+        try {
+            const track = this.trackView.track;
+            const features = await this.getFeatures(track, chr, bpStart, bpEnd, referenceFrame.bpPerPixel);
+            if (features) {
+                let roiFeatures = [];
+                if (track.roiSets && track.roiSets.length > 0) {
+                    for (let roiSet of track.roiSets) {
+                        const features = await roiSet.getFeatures(chr, bpStart, bpEnd, referenceFrame.bpPerPixel);
+                        roiFeatures.push({track: roiSet, features});
+                    }
+                }
+
+                const mr = track && ("wig" === track.type || "merged" === track.type);   // wig tracks are potentially multiresolution (e.g. bigwig)
+                this.featureCache = new FeatureCache(chr, bpStart, bpEnd, referenceFrame.bpPerPixel, features, roiFeatures, mr);
+                this.loading = false;
+                this.hideMessage();
+                this.stopSpinner();
+                return this.featureCache
+            }
+        } catch (error) {
+            // Track might have been removed during load
+            if (this.trackView && this.trackView.disposed !== true) {
+                this.showMessage(NOT_LOADED_MESSAGE);
+                this.browser.alert.present(error);
+                console.error(error);
+            }
+        } finally {
+            this.loading = false;
+            this.stopSpinner();
+        }
+    }
+
+    /**
+     * Compute the genomic extent and needed pixelWidth to repaint the canvas for the current genomic state.
+     * Normally the canvas is size 3X the width of the viewport, however there is no left-right panning for WGV so
+     * canvas width is viewport width.
+     * @returns {{bpEnd: *, pixelWidth: (*|number), bpStart: number}}
+     */
+    repaintDimensions() {
+        const isWGV = GenomeUtils.isWholeGenomeView(this.referenceFrame.chr);
+        const pixelWidth = isWGV ? this.$viewport.width() : 3 * this.$viewport.width();
+        const bpPerPixel = this.referenceFrame.bpPerPixel;
+        const bpStart = this.referenceFrame.start - (isWGV ? 0 : pixelWidth / 3 * bpPerPixel);
+        const bpEnd = this.referenceFrame.end + (isWGV ? 0 : pixelWidth / 3 * bpPerPixel);
+        return {
+            bpStart, bpEnd, pixelWidth
+        }
+    }
+
+    /**
+     * Repaint the canvas using the cached features
+     *
+     */
+    repaint() {
+
+        if (undefined === this.featureCache) {
+            return
+        }
+
+        const {features, roiFeatures} = this.featureCache;
+
+        // Canvas dimensions.
+        // For deep tracks we paint a canvas == 3*viewportHeight centered on the current vertical scroll position
+        const {bpStart, bpEnd, pixelWidth} = this.repaintDimensions();
+        const viewportHeight = this.$viewport.height();
+        const contentHeight = this.getContentHeight();
+        const maxHeight = roiFeatures ? Math.max(contentHeight, viewportHeight) : contentHeight;  // Need to fill viewport for ROIs.
+        const pixelHeight = Math.min(maxHeight, 3 * viewportHeight);
+        if (0 === pixelWidth || 0 === pixelHeight) {
+            if (this.canvas) {
+                $$1(this.canvas).remove();
+            }
+            return
+        }
+        const pixelTop = Math.max(0, -this.contentTop - Math.floor(pixelHeight / 3));
+
+        const bpPerPixel = this.referenceFrame.bpPerPixel;
+        const pixelXOffset = Math.round((bpStart - this.referenceFrame.start) / bpPerPixel);
+        const canvasTop = (this.contentTop || 0) + pixelTop;
+        const newCanvas = document.createElement('canvas');//  $('<canvas class="igv-canvas">').get(0)
+        newCanvas.style.position = 'relative';
+        newCanvas.style.display = 'block';
+        newCanvas.style.width = pixelWidth + "px";
+        newCanvas.style.height = pixelHeight + "px";
+        newCanvas.style.left = pixelXOffset + "px";
+        newCanvas.style.top = canvasTop + "px";
+
+        // Always use high DPI if in "FILL" display mode, otherwise use track setting;
+        const devicePixelRatio = ("FILL" === this.trackView.track.displayMode || this.trackView.track.supportHiDPI !== false) ?
+            window.devicePixelRatio : 1;
+        newCanvas.width = devicePixelRatio * pixelWidth;
+        newCanvas.height = devicePixelRatio * pixelHeight;
+
+        const ctx = newCanvas.getContext("2d");
+        ctx.scale(devicePixelRatio, devicePixelRatio);
+        ctx.translate(0, -pixelTop);
+
+        const drawConfiguration =
+            {
+                context: ctx,
+                pixelXOffset,
+                pixelWidth,
+                pixelHeight,
+                pixelTop,
+                bpStart,
+                bpEnd: bpEnd,
+                bpPerPixel,
+                referenceFrame: this.referenceFrame,
+                selection: this.selection,
+                viewport: this,
+                viewportWidth: this.$viewport.width()
+            };
+
+        this.draw(drawConfiguration, features, roiFeatures);
+
+        if (this.canvas) {
+            $$1(this.canvas).remove();
+        }
+        newCanvas._data = drawConfiguration;
+        this.canvas = newCanvas;
+        this.$viewport.append($$1(newCanvas));
+
+    }
+
+    refresh() {
+        if (!(this.canvas && this.featureCache)) return
+
+        const drawConfiguration = this.canvas._data;
+        drawConfiguration.context.clearRect(0, 0, this.canvas.width, this.canvas.height);
+        const {features, roiFeatures} = this.featureCache;
+        this.draw(drawConfiguration, features, roiFeatures);
+    }
+
+    /**
+     * Draw the associated track.
+     *
+     * @param drawConfiguration
+     * @param features
+     * @param roiFeatures
+     */
+    draw(drawConfiguration, features, roiFeatures) {
+
+        if (features) {
+            drawConfiguration.features = features;
+            this.trackView.track.draw(drawConfiguration);
+        }
+        if (roiFeatures && roiFeatures.length > 0) {
+            for (let r of roiFeatures) {
+                drawConfiguration.features = r.features;
+                r.track.draw(drawConfiguration);
+            }
+        }
+    }
+
+    containsPosition(chr, position) {
+        if (this.referenceFrame.chr === chr && position >= this.referenceFrame.start) {
+            return position <= this.referenceFrame.calculateEnd(this.getWidth())
+        } else {
+            return false
+        }
+    }
+
+    isLoading() {
+        return this.loading
+    }
+
+    savePNG() {
+
+        if (!this.canvas) return
+
+        const canvasMetadata = this.canvas._data;
+        const canvasTop = canvasMetadata ? canvasMetadata.pixelTop : 0;
+        const devicePixelRatio = window.devicePixelRatio;
+        const w = this.$viewport.width() * devicePixelRatio;
+        const h = this.$viewport.height() * devicePixelRatio;
+        const x = -$$1(this.canvas).position().left * devicePixelRatio;
+        const y = (-this.contentTop - canvasTop) * devicePixelRatio;
+
+        const ctx = this.canvas.getContext("2d");
+        const imageData = ctx.getImageData(x, y, w, h);
+        const exportCanvas = document.createElement('canvas');
+        const exportCtx = exportCanvas.getContext('2d');
+        exportCanvas.width = imageData.width;
+        exportCanvas.height = imageData.height;
+        exportCtx.putImageData(imageData, 0, 0);
+
+        // filename = this.trackView.track.name + ".png";
+        const filename = (this.$trackLabel.text() ? this.$trackLabel.text() : "image") + ".png";
+        const data = exportCanvas.toDataURL("image/png");
+        download(filename, data);
+    }
+
+    saveSVG() {
+
+        const marginTop = 32;
+        const marginLeft = 32;
+
+        let {width, height} = this.browser.columnContainer.getBoundingClientRect();
+
+        const h_render = 8000;
+
+        const config =
+            {
+
+                width,
+                height: h_render,
+
+                backdropColor: 'white',
+
+                multiLocusGap: 0,
+
+                viewbox:
+                    {
+                        x: 0,
+                        y: 0,
+                        width,
+                        height: h_render
+                    }
+
+            };
+
+        const context = new ctx(config);
+
+        const delta =
+            {
+                deltaX: marginLeft,
+                deltaY: marginTop
+            };
+
+        this.renderViewportToSVG(context, delta);
+
+        // reset height to trim away unneeded svg canvas real estate. Yes, a bit of a hack.
+        context.setHeight(height);
+
+        const str = (this.trackView.track.name || this.trackView.track.id).replace(/\W/g, '');
+        const index = this.browser.referenceFrameList.indexOf(this.referenceFrame);
+
+        const svg = context.getSerializedSvg(true);
+        const data = URL.createObjectURL(new Blob([svg], {type: "application/octet-stream"}));
+
+        const id = `${str}_referenceFrame_${index}_guid_${domUtils.guid()}`;
+        download(`${id}.svg`, data);
+
+    }
+
+    // called by trackView.renderSVGContext() when rendering
+    // entire browser as SVG
+
+    renderViewportToSVG(context, {deltaX, deltaY}) {
+
+        if (this.$zoomInNotice && this.$zoomInNotice.is(":visible")) {
+            return
+        }
+
+        const {width, height} = this.$viewport.get(0).getBoundingClientRect();
+
+        const str = (this.trackView.track.name || this.trackView.track.id).replace(/\W/g, '');
+        const index = this.browser.referenceFrameList.indexOf(this.referenceFrame);
+        const id = `${str}_referenceFrame_${index}_guid_${domUtils.guid()}`;
+        this.drawSVGWithContext(context, width, height, id, deltaX, deltaY + this.contentTop, -this.contentTop);
+
+    }
+
+    renderSVGContext(context, {deltaX, deltaY}) {
+
+        this.renderViewportToSVG(context, {deltaX, deltaY});
+
+        if (this.$zoomInNotice && this.$zoomInNotice.is(":visible")) {
+            return
+        }
+
+        if (this.$trackLabel && true === this.browser.trackLabelsVisible) {
+            const {x, y, width, height} = domUtils.relativeDOMBBox(this.$viewport.get(0), this.$trackLabel.get(0));
+            this.renderTrackLabelSVG(context, deltaX + x, deltaY + y, width, height);
+        }
+
+    }
+
+    // render track label element called from renderSVGContext()
+    renderTrackLabelSVG(context, tx, ty, width, height) {
+
+        const str = (this.trackView.track.name || this.trackView.track.id).replace(/\W/g, '');
+        const id = `${str}_track_label_guid_${domUtils.guid()}`;
+
+        context.saveWithTranslationAndClipRect(id, tx, ty, width, height, 0);
+
+        context.fillStyle = "white";
+        context.fillRect(0, 0, width, height);
+
+        context.font = "12px Arial";
+        context.fillStyle = 'rgb(68, 68, 68)';
+
+        const {width: stringWidth} = context.measureText(this.$trackLabel.text());
+        const dx = 0.25 * (width - stringWidth);
+        const dy = 0.7 * (height - 12);
+        context.fillText(this.$trackLabel.text(), dx, height - dy);
+
+        context.strokeStyle = 'rgb(68, 68, 68)';
+        context.strokeRect(0, 0, width, height);
+
+        context.restore();
+
+    }
+
+    // called by renderSVGContext()
+    drawSVGWithContext(context, width, height, id, x, y, yClipOffset) {
+
+        context.saveWithTranslationAndClipRect(id, x, y, width, height, yClipOffset);
+
+        let {start, bpPerPixel} = this.referenceFrame;
+
+        const config =
+            {
+                context,
+                viewport: this,
+                referenceFrame: this.referenceFrame,
+                top: yClipOffset,
+                pixelTop: yClipOffset,
+                pixelWidth: width,
+                pixelHeight: height,
+                bpStart: start,
+                bpEnd: start + (width * bpPerPixel),
+                bpPerPixel,
+                viewportWidth: width,
+                selection: this.selection
+            };
+
+        const features = this.featureCache ? this.featureCache.features : undefined;
+        const roiFeatures = this.featureCache ? this.featureCache.roiFeatures : undefined;
+        this.draw(config, features, roiFeatures);
+
+        context.restore();
+
+    }
+
+    get cachedFeatures() {
+        return this.featureCache ? this.featureCache.features : []
+    }
+
+    clearCache() {
+        this.featureCache = undefined;
+        if (this.canvas) this.canvas._data = undefined;
+    }
+
+    async getFeatures(track, chr, start, end, bpPerPixel) {
+        if (this.featureCache && this.featureCache.containsRange(chr, start, end, bpPerPixel)) {
+            return this.featureCache.features
+        } else if (typeof track.getFeatures === "function") {
+            const features = await track.getFeatures(chr, start, end, bpPerPixel, this);
+            this.checkContentHeight(features);
+            return features
+        } else {
+            return undefined
+        }
+    }
+
+    needsRepaint() {
+
+        if (!this.canvas) return true
+
+        const data = this.canvas._data;
+        return !data ||
+            this.referenceFrame.start < data.bpStart ||
+            this.referenceFrame.end > data.bpEnd ||
+            this.referenceFrame.chr !== data.referenceFrame.chr ||
+            this.referenceFrame.bpPerPixel != data.bpPerPixel
+    }
+
+    needsReload() {
+        if (!this.featureCache) return true
+        const {chr, bpPerPixel} = this.referenceFrame;
+        const {bpStart, bpEnd} = this.repaintDimensions();
+        return (!this.featureCache.containsRange(chr, bpStart, bpEnd, bpPerPixel))
+    }
+
+    createZoomInNotice($parent) {
+
+        const $container = $$1('<div>', {class: 'igv-zoom-in-notice-container'});
+        $parent.append($container);
+
+        const $e = $$1('<div>');
+        $container.append($e);
+
+        $e.text('Zoom in to see features');
+
+        $container.hide();
+
+        return $container
+    }
+
+    viewIsReady() {
+        return this.browser && this.browser.referenceFrameList && this.referenceFrame
+    }
+
+    addMouseHandlers() {
+
+        const viewport = this.$viewport.get(0);
+
+        this.addViewportContextMenuHandler(viewport);
+
+        // Mouse down
+        const md = (event) => {
+            this.enableClick = true;
+            this.browser.mouseDownOnViewport(event, this);
+            domUtils.pageCoordinates(event);
+        };
+        viewport.addEventListener('mousedown', md);
+        viewport.addEventListener('touchstart', md);
+
+        // Mouse up
+        const mu = (event) => {
+            // Any mouse up cancels drag and scrolling
+            if (this.browser.dragObject || this.browser.isScrolling) {
+                this.browser.cancelTrackPan();
+                // event.preventDefault();
+                // event.stopPropagation();
+                this.enableClick = false;   // Until next mouse down
+            } else {
+                this.browser.cancelTrackPan();
+                this.browser.endTrackDrag();
+            }
+        };
+        viewport.addEventListener('mouseup', mu);
+        viewport.addEventListener('touchend', mu);
+
+        // Mouse move
+        if (typeof this.trackView.track.hoverText === 'function') {
+            viewport.addEventListener('mousemove', (event => {
+                if (event.buttons === 0 && (Date.now() - lastHoverUpdateTime > 100)) {
+                    lastHoverUpdateTime = Date.now();
+                    const clickState = this.createClickState(event);
+                    if (clickState) {
+                        const tooltip = this.trackView.track.hoverText(clickState);
+                        if (tooltip) {
+                            this.$viewport[0].setAttribute("title", tooltip);
+                        } else {
+                            this.$viewport[0].removeAttribute("title");
+                        }
+                    }
+                }
+            }));
+        }
+
+        this.addViewportClickHandler(this.$viewport.get(0));
+
+        if (this.trackView.track.name && "sequence" !== this.trackView.track.config.type) {
+            this.addTrackLabelClickHandler(this.$trackLabel.get(0));
+        }
+
+    }
+
+    addViewportContextMenuHandler(viewport) {
+
+        viewport.addEventListener('contextmenu', (event) => {
+
+            // Ignore if we are doing a drag.  This can happen with touch events.
+            if (this.browser.dragObject) {
+                return false
+            }
+
+            const clickState = this.createClickState(event);
+
+            if (undefined === clickState) {
+                return false
+            }
+
+            event.preventDefault();
+
+            // Track specific items
+            let menuItems = [];
+            if (typeof this.trackView.track.contextMenuItemList === "function") {
+                const trackMenuItems = this.trackView.track.contextMenuItemList(clickState);
+                if (trackMenuItems) {
+                    menuItems = trackMenuItems;
+                }
+            }
+
+            // Add items common to all tracks
+            if (menuItems.length > 0) {
+                menuItems.push({label: $$1('<HR>')});
+            }
+
+            menuItems.push({label: 'Save Image (PNG)', click: () => this.savePNG()});
+            menuItems.push({label: 'Save Image (SVG)', click: () => this.saveSVG()});
+
+            this.browser.menuPopup.presentTrackContextMenu(event, menuItems);
+        });
+
+    }
+
+
+    addViewportClickHandler(viewport) {
+
+        viewport.addEventListener('click', (event) => {
+
+            if (this.enableClick && this.canvas) {
+                if (3 === event.which || event.ctrlKey) {
+                    return
+                }
+
+                // Close any currently open popups
+                $$1('.igv-popover').hide();
+
+
+                if (this.browser.dragObject || this.browser.isScrolling) {
+                    return
+                }
+
+                // Treat as a mouse click, its either a single or double click.
+                // Handle here and stop propogation / default
+                event.preventDefault();
+
+                const mouseX = domUtils.translateMouseCoordinates(event, this.$viewport.get(0)).x;
+                const mouseXCanvas = domUtils.translateMouseCoordinates(event, this.canvas).x;
+                const referenceFrame = this.referenceFrame;
+                const xBP = Math.floor((referenceFrame.start) + referenceFrame.toBP(mouseXCanvas));
+
+                const time = Date.now();
+
+                if (time - lastClickTime < this.browser.constants.doubleClickDelay) {
+
+                    // double-click
+                    if (popupTimerID) {
+                        window.clearTimeout(popupTimerID);
+                        popupTimerID = undefined;
+                    }
+
+                    const centerBP = Math.round(referenceFrame.start + referenceFrame.toBP(mouseX));
+
+                    let string;
+
+                    if ('all' === this.referenceFrame.chr.toLowerCase()) {
+
+                        const chr = this.browser.genome.getChromosomeCoordinate(centerBP).chr;
+
+                        if (1 === this.browser.referenceFrameList.length) {
+                            string = chr;
+                        } else {
+                            const loci = this.browser.referenceFrameList.map(({locusSearchString}) => locusSearchString);
+                            const index = this.browser.referenceFrameList.indexOf(this.referenceFrame);
+                            loci[index] = chr;
+                            string = loci.join(' ');
+                        }
+
+                        this.browser.search(string);
+
+                    } else {
+                        this.browser.zoomWithScaleFactor(0.5, centerBP, this.referenceFrame);
+                    }
+
+
+                } else {
+                    // single-click
+
+                    if (event.shiftKey && typeof this.trackView.track.shiftClick === "function") {
+
+                        this.trackView.track.shiftClick(xBP, event);
+
+                    } else if (typeof this.trackView.track.popupData === "function") {
+
+                        popupTimerID = setTimeout(() => {
+
+                                const content = this.getPopupContent(event);
+                                if (content) {
+                                    if (this.popover) this.popover.dispose();
+                                    this.popover = new Popover(this.browser.columnContainer);
+                                    this.popover.presentContentWithEvent(event, content);
+                                }
+                                window.clearTimeout(popupTimerID);
+                                popupTimerID = undefined;
+                            },
+                            this.browser.constants.doubleClickDelay);
+                    }
+                }
+
+                lastClickTime = time;
+
+            }
+        });
+    }
+
+    addTrackLabelClickHandler(trackLabel) {
+
+        trackLabel.addEventListener('click', (event) => {
+
+            event.stopPropagation();
+
+            const {track} = this.trackView;
+
+            let str;
+            if (typeof track.description === 'function') {
+                str = track.description();
+            } else if (track.description) {
+                str = `<div>${track.description}</div>`;
+            }
+
+            if (str) {
+                if (this.popover) {
+                    this.popover.dispose();
+                }
+                this.popover = new Popover(this.browser.columnContainer, (track.name || ''));
+                this.popover.presentContentWithEvent(event, str);
+            }
+        });
+    }
+
+    createClickState(event) {
+
+        if (!this.canvas) return  // Can happen during initialization
+
+        const referenceFrame = this.referenceFrame;
+        const viewportCoords = domUtils.translateMouseCoordinates(event, this.$viewport.get(0));
+        const canvasCoords = domUtils.translateMouseCoordinates(event, this.canvas);
+        const genomicLocation = ((referenceFrame.start) + referenceFrame.toBP(viewportCoords.x));
+
+        return {
+            event,
+            viewport: this,
+            referenceFrame,
+            genomicLocation,
+            y: viewportCoords.y - this.contentTop,
+            canvasX: canvasCoords.x,
+            canvasY: canvasCoords.y
+        }
+
+    }
+
+    getPopupContent(event) {
+
+        const clickState = this.createClickState(event);
+
+        if (undefined === clickState) {
+            return
+        }
+
+        let track = this.trackView.track;
+        const dataList = track.popupData(clickState);
+
+        const popupClickHandlerResult = this.browser.fireEvent('trackclick', [track, dataList]);
+
+        let content;
+        if (undefined === popupClickHandlerResult || true === popupClickHandlerResult) {
+            // Indicates handler did not handle the result, or the handler wishes default behavior to occur
+            if (dataList && dataList.length > 0) {
+                content = formatPopoverText(dataList);
+            }
+
+        } else if (typeof popupClickHandlerResult === 'string') {
+            content = popupClickHandlerResult;
+        }
+
+        return content
+    }
+
+
+}
+
+
+function formatPopoverText(nameValues) {
+
+    const rows = nameValues.map(nameValue => {
+
+        if (nameValue.name) {
+            const str = `<span>${nameValue.name}</span>&nbsp&nbsp&nbsp${nameValue.value}`;
+            return `<div title="${nameValue.value}">${str}</div>`
+        } else if ('<hr>' === nameValue) { // this can be retired if nameValue.html is allowed.
+            return nameValue
+        } else if (nameValue.html) {
+            return nameValue.html
+        } else {
+            return `<div title="${nameValue}">${nameValue}</div>`
+        }
+
+    });
+
+    return rows.join('')
+}
+
+class FeatureCache {
+
+    constructor(chr, tileStart, tileEnd, bpPerPixel, features, roiFeatures, multiresolution) {
+        this.chr = chr;
+        this.bpStart = tileStart;
+        this.bpEnd = tileEnd;
+        this.bpPerPixel = bpPerPixel;
+        this.features = features;
+        this.roiFeatures = roiFeatures;
+        this.multiresolution = multiresolution;
+    }
+
+    containsRange(chr, start, end, bpPerPixel) {
+
+        // For multi-resolution tracks allow for a 2X change in bpPerPixel
+        const r = this.multiresolution ? this.bpPerPixel / bpPerPixel : 1;
+
+        return start >= this.bpStart && end <= this.bpEnd && chr === this.chr && r > 0.5 && r < 2
+    }
+
+    overlapsRange(chr, start, end) {
+        return this.chr === chr && end >= this.bpStart && start <= this.bpEnd
+    }
+}
+
+/**
+ * Decode UCSC "interact" files.  See https://genome.ucsc.edu/goldenpath/help/interact.html
+ *
+ 0  string chrom;        "Chromosome (or contig, scaffold, etc.). For interchromosomal, use 2 records"
+ 1  uint chromStart;     "Start position of lower region. For interchromosomal, set to chromStart of this region"
+ 2  uint chromEnd;       "End position of upper region. For interchromosomal, set to chromEnd of this region"
+ 3  string name;         "Name of item, for display.  Usually 'sourceName/targetName/exp' or empty"
+ 4  uint score;          "Score (0-1000)"
+ 5  double value;        "Strength of interaction or other data value. Typically basis for score"
+ 6  string exp;          "Experiment name (metadata for filtering). Use . if not applicable"
+ 7  string color;        "Item color.  Specified as r,g,b or hexadecimal #RRGGBB or html color name, as in //www.w3.org/TR/css3-color/#html4. Use 0 and spectrum setting to shade by score"
+ 8  string sourceChrom;  "Chromosome of source region (directional) or lower region. For non-directional interchromosomal, chrom of this region."
+ 9  uint sourceStart;    "Start position in chromosome of source/lower/this region"
+ 10 uint sourceEnd;      "End position in chromosome of source/lower/this region"
+ 11 string sourceName;   "Identifier of source/lower/this region"
+ 12 string sourceStrand; "Orientation of source/lower/this region: + or -.  Use . if not applicable"
+ 13 string targetChrom;  "Chromosome of target region (directional) or upper region. For non-directional interchromosomal, chrom of other region"
+ 14 uint targetStart;    "Start position in chromosome of target/upper/this region"
+ 15 uint targetEnd;      "End position in chromosome of target/upper/this region"
+ 16 string targetName;   "Identifier of target/upper/this region"
+ 17 string targetStrand; "Orientation of target/upper/this region: + or -.  Use . if not applicable"
+ *
+ * @param tokens
+ * @param ignore
+ * @returns {*}
+ */
+function decodeInteract(tokens, header) {
+
+    if (tokens.length < 6) {
+        console.log("Skipping line: " + tokens.join(' '));
+        return undefined
+    }
+
+    var feature = {
+        chr: tokens[0],
+        start: tokens[1],
+        end: tokens[2],
+
+        chr1: tokens[8],
+        start1: Number.parseInt(tokens[9]),
+        end1: Number.parseInt(tokens[10]),
+
+        chr2: tokens[13],
+        start2: Number.parseInt(tokens[14]),
+        end2: Number.parseInt(tokens[15]),
+
+        name: tokens[3],
+        score: Number(tokens[4]),
+        value: Number(tokens[5]),
+        color: tokens[7] === '.' ? undefined : tokens[7] === "0" ? "rgb(0,0,0)" : tokens[7],
+
+    };
+
+    return feature
+}
+
+/**
+ * Some interpretations of the sequence ontology needed to assemble GFF transcripts.
+ *
+ */
+
+const transcriptTypes = new Set(['transcript', 'primary_transcript', 'processed_transcript', 'mRNA', 'mrna',
+    'lnc_RNA', 'miRNA', 'ncRNA', 'rRNA', 'scRNA', 'snRNA', 'snoRNA', 'tRNA']);
+const cdsTypes = new Set(['CDS', 'cds']);
+const codonTypes = new Set(['start_codon', 'stop_codon']);
+const utrTypes = new Set(['5UTR', '3UTR', 'UTR', 'five_prime_UTR', 'three_prime_UTR', "3'-UTR", "5'-UTR"]);
+const exonTypes = new Set(['exon', 'coding-exon']);
+
+const transcriptPartTypes = new Set();
+for (let cltn of [cdsTypes, codonTypes, utrTypes, exonTypes]) {
+    for (let t of cltn) {
+        transcriptPartTypes.add(t);
+    }
+}
+
+function isExon(type) {
+    return exonTypes.has(type)
+}
+
+function isIntron(type) {
+    return type.includes("intron")
+}
+
+function isCoding(type) {
+    return cdsTypes.has(type) || codonTypes.has(type)
+}
+
+function isUTR(type) {
+    return utrTypes.has(type)
+}
+
+function isTranscript(type) {
+    return transcriptTypes.has(type) || type.endsWith("RNA") || type.endsWith("transcript")
+}
+
+function isTranscriptPart(type) {
+    return transcriptPartTypes.has(type) || type.endsWith("RNA") || isIntron(type)
+}
+
+const filterPopupProperties = new Set(["id", "parent", "name"]);
+
+class GFFFeature {
+
+    constructor(properties) {
+        Object.assign(this, properties);
+    }
+
+    popupData(genomicLocation) {
+
+        const pd = this.geneObject ? this.geneObject.popupData() : [];
+
+        if (this.geneObject) {
+            pd.push('<hr/>');
+        }
+
+        if (this.name) {
+            pd.push({name: 'Name', value: this.name});
+        }
+
+        pd.push({name: 'Type', value: this.type});
+        pd.push({name: 'Source', value: this.source});
+        if (this.score !== undefined) {
+            pd.push({name: 'Score', value: this.score});
+        }
+
+        if (this.attributeString) {
+            const atts = parseAttributeString(this.attributeString, this.delim);
+            for (let [key, value] of atts) {
+                if (value !== undefined && value.length > 0 && !filterPopupProperties.has(key.toLowerCase())) {
+                    pd.push({name: key + ":", value: value});
+                }
+            }
+        }
+        pd.push({
+            name: 'Location',
+            value: `${this.chr}:${numberFormatter$1(this.start + 1)}-${numberFormatter$1(this.end)}`
+        });
+        return pd
+    }
+
+    getAttributeValue(attributeName) {
+        if (this.hasOwnProperty(attributeName)) {
+            return this[attributeName]
+        } else {
+            // TODO -- fetch from attribute string and cache
+            if (!this._attributeCache) {
+                this._attributeCache = new Map();
+            }
+            if (this._attributeCache.has(attributeName)) {
+                return this._attributeCache.get(attributeName)
+            } else {
+                const atts = parseAttributeString(this.attributeString, this.delim);
+                let v;
+                for (let [key, value] of atts) {
+                    if (key === attributeName) {
+                        v = value;
+                        break
+                    }
+                }
+                this._attributeCache.set(attributeName, v);
+                return v
+            }
+        }
+    }
+}
+
+class GFFTranscript extends GFFFeature {
+
+    constructor(feature) {
+        super(feature);
+        this.exons = [];
+        this.parts = [];
+    }
+
+    addExon(feature) {
+
+        this.exons.push(feature);
+
+        // Expand feature --  for transcripts not explicitly represented in the file (gtf)
+        this.start = Math.min(this.start, feature.start);
+        this.end = Math.max(this.end, feature.end);
+    }
+
+    addPart(feature) {
+        this.parts.push(feature);
+    }
+
+    assembleParts() {
+
+        if (this.parts.length === 0) return
+
+        this.parts.sort(function (a, b) {
+            return a.start - b.start
+        });
+
+        // Create exons, if neccessary
+        let lastStart = this.parts[0].start;
+        let lastEnd = this.parts[0].end;
+        for (let i = 1; i < this.parts.length; i++) {
+            const part = this.parts[i];
+            if (isIntron(part.type)) {
+                continue
+            }
+            if (part.start <= lastEnd) {
+                lastEnd = Math.max(lastEnd, part.end);
+            } else {
+                let exon = this.findExonContaining({start: lastStart, end: lastEnd});
+                if (!exon) {
+                    this.exons.push({start: lastStart, end: lastEnd, psuedo: true});
+                }
+                lastStart = part.start;
+                lastEnd = part.end;
+            }
+        }
+        let exon = this.findExonContaining({start: lastStart, end: lastEnd});
+        if (!exon) {
+            this.exons.push({start: lastStart, end: lastEnd, psuedo: true});
+            this.start = Math.min(this.start, lastStart);
+            this.end = Math.max(this.end, lastEnd);
+        }
+
+
+        for (let part of this.parts) {
+            const type = part.type;
+            if (isCoding(type)) {
+                this.addCDS(part);
+            } else if (isUTR(type)) {
+                this.addUTR(part);
+            }
+        }
+    }
+
+    findExonContaining({start, end}) {
+        for (let exon of this.exons) {
+            if (exon.end >= end && exon.start <= start) {
+                return exon
+            }
+        }
+        return undefined
+    }
+
+    addCDS(cds) {
+
+        let exon;
+        const exons = this.exons;
+
+        for (let e of exons) {
+            if (e.start <= cds.start && e.end >= cds.end) {
+                exon = e;
+                break
+            }
+        }
+
+        if (exon) {
+            exon.cdStart = exon.cdStart ? Math.min(cds.start, exon.cdStart) : cds.start;
+            exon.cdEnd = exon.cdEnd ? Math.max(cds.end, exon.cdEnd) : cds.end;
+        } else {
+            // cds.cdStart = cds.start
+            // cds.cdEnd = cds.end
+            // exons.push(cds)
+            console.error("No exon found spanning " + cds.start + "-" + cds.end);
+        }
+
+        // Expand feature --  for transcripts not explicitly represented in the file (gtf files)
+        // this.start = Math.min(this.start, cds.start);
+        // this.end = Math.max(this.end, cds.end);
+
+        this.cdStart = this.cdStart ? Math.min(cds.start, this.cdStart) : cds.start;
+        this.cdEnd = this.cdEnd ? Math.max(cds.end, this.cdEnd) : cds.end;
+    }
+
+    addUTR(utr) {
+
+        let exon;
+        const exons = this.exons;
+
+        // Find exon containing CDS
+        for (let i = 0; i < exons.length; i++) {
+            if (exons[i].start <= utr.start && exons[i].end >= utr.end) {
+                exon = exons[i];
+                break
+            }
+        }
+
+        if (exon) {
+            if (utr.start === exon.start && utr.end === exon.end) {
+                exon.utr = true;
+            } else {
+                if (utr.end < exon.end) {
+                    exon.cdStart = utr.end;
+                }
+                if (utr.start > exon.start) {
+                    exon.cdEnd = utr.start;
+                }
+            }
+
+        } else {
+            // utr.utr = true
+            // exons.push(utr)
+            console.error("No exon found spanning " + cds.start + "-" + cds.end);
+        }
+
+        // Expand feature --  for transcripts not explicitly represented in the file
+        // this.start = Math.min(this.start, utr.start);
+        // this.end = Math.max(this.end, utr.end);
+
+    }
+
+    finish() {
+
+        this.assembleParts();
+
+        var cdStart = this.cdStart;
+        var cdEnd = this.cdEnd;
+
+        this.exons.sort(function (a, b) {
+            return a.start - b.start
+        });
+
+        // Search for UTR exons that were not explicitly tagged
+        if (cdStart) {
+            this.exons.forEach(function (exon) {
+                if (exon.end < cdStart || exon.start > cdEnd) exon.utr = true;
+            });
+        }
+    }
+
+    popupData(genomicLocation) {
+
+        const pd = super.popupData(genomicLocation);
+
+        // If clicked over an exon add its attributes
+        for (let exon of this.exons) {
+            if (exon.pseudo) continue  // An implicit exon
+            if (genomicLocation >= exon.start && genomicLocation < exon.end && typeof exon.popupData === 'function') {
+                pd.push('<hr/>');
+                const exonData = exon.popupData(genomicLocation);
+                for (let att of exonData) {
+                    pd.push(att);
+                }
+            }
+        }
+
+        for (let part of this.parts) {
+            if (genomicLocation >= part.start && genomicLocation < part.end && typeof part.popupData === 'function') {
+                pd.push('<hr/>');
+                const partData = part.popupData(genomicLocation);
+                for (let att of partData) {
+                    pd.push(att);
+                }
+            }
+        }
+
+
+        return pd
+    }
+}
+
+function decode(tokens, header) {
+
+    const format = header.format;
+    if (tokens.length < 9) {
+        return undefined      // Not a valid gff record
+    }
+
+    const delim = ('gff3' === format) ? '=' : ' ';
+    return new GFFFeature({
+        source: decodeGFFAttribute(tokens[1]),
+        type: tokens[2],
+        chr: tokens[0],
+        start: parseInt(tokens[3]) - 1,
+        end: parseInt(tokens[4]),
+        score: "." === tokens[5] ? undefined : Number(tokens[5]),
+        strand: tokens[6],
+        phase: "." === tokens[7] ? 0 : parseInt(tokens[7]),
+        attributeString: tokens[8],
+        delim: delim
+    })
+}
+
+
+/**
+ * Decode a single gff record (1 line in file).  Aggregations such as gene models are constructed at a higher level.
+ *      ctg123 . mRNA            1050  9000  .  +  .  ID=mRNA00001;Parent=gene00001
+ * @param tokens
+ * @param ignore
+ * @returns {*}
+ */
+function decodeGFF3(tokens, header) {
+
+    const feature = decode(tokens, header);
+
+    if (!feature) {
+        return
+    }
+
+    const attributes = parseAttributeString(feature.attributeString, feature.delim);
+
+    // Search for color value as case insenstivie key
+    for (let [key, value] of attributes) {
+        const keyLower = key.toLowerCase();
+        if ("color" === keyLower || "colour" === keyLower) {
+            feature.color = IGVColor.createColorString(value);
+        } else if (key === "ID") {
+            feature.id = value;
+        } else if (key === "Parent") {
+            feature.parent = value;
+        }
+    }
+    return feature
+}
+
+/**
+ * GTF format example:
+ NC_000008.11    BestRefSeq    gene    127735434    127742951    .    +    .    gene_id "MYC"; transcript_id ""; db_xref "GeneID:4609"; db_xref "HGNC:HGNC:7553"; db_xref "MIM:190080"; description "MYC proto-oncogene, bHLH transcription factor"; gbkey "Gene"; gene "MYC"; gene_biotype "protein_coding"; gene_synonym "bHLHe39"; gene_synonym "c-Myc"; gene_synonym "MRTL"; gene_synonym "MYCC";
+ NC_000008.11    BestRefSeq    transcript    127735434    127742951    .    +    .    gene_id "MYC"; transcript_id "NM_001354870.1"; db_xref "GeneID:4609"; gbkey "mRNA"; gene "MYC"; product "MYC proto-oncogene, bHLH transcription factor, transcript variant 2"; transcript_biotype "mRNA";
+ NC_000008.11    BestRefSeq    exon    127735434    127736623    .    +    .    gene_id "MYC"; transcript_id "NM_001354870.1"; db_xref "GeneID:4609"; gene "MYC"; product "MYC proto-oncogene, bHLH transcription factor, transcript variant 2"; transcript_biotype "mRNA"; exon_number "1";
+ *
+ * @param tokens
+ * @param ignore
+ * @returns {*}
+ */
+function decodeGTF(tokens, header) {
+
+    const feature = decode(tokens, header);
+
+    if (!feature) {
+        return
+    }
+
+    const attributes = parseAttributeString(feature.attributeString, feature.delim);
+
+    // GTF files specify neither ID nor parent fields, but they can be inferred from common conventions
+    let idField;
+    let parentField;
+    switch (feature.type) {
+        case "gene":
+            idField = "gene_id";
+            break
+        case "transcript":
+            idField = "transcript_id";
+            parentField = "gene_id";
+            break
+        default:
+            parentField = "transcript_id";
+    }
+
+    for (let [key, value] of attributes) {
+        const keyLower = key.toLowerCase();
+        if ("color" === keyLower || "colour" === keyLower) {
+            feature.color = IGVColor.createColorString(value);
+        } else if (key === idField) {
+            feature.id = value;
+        } else if (key === parentField) {
+            feature.parent = value;
+        }
+    }
+    return feature
+
+}
+
+
+/**
+ * Parse the attribute string, returning an array of key-value pairs.  An array is used rather than a map as attribute
+ * keys are not required to be unique.
+ *
+ * @param attributeString
+ * @param keyValueDelim
+ * @returns {[]}
+ */
+function parseAttributeString(attributeString, keyValueDelim, relaxed = false) {
+    // parse 'attributes' string (see column 9 docs in https://github.com/The-Sequence-Ontology/Specifications/blob/master/gff3.md)
+    var attributes = [];
+    for (let kv of attributeString.split(';')) {
+        kv = kv.trim();
+        const idx = kv.indexOf(keyValueDelim);
+        if (idx > 0 && idx < kv.length - 1) {
+            const key = stripQuotes(decodeGFFAttribute(kv.substring(0, idx).trim(), relaxed));
+            let value = stripQuotes(decodeGFFAttribute(kv.substring(idx + 1).trim(), relaxed));
+            attributes.push([key, value]);
+        }
+    }
+    return attributes
+}
+
+function stripQuotes(value) {
+    if (value.startsWith('"') && value.endsWith('"')) {
+        value = value.substr(1, value.length - 2);
+    }
+    return value
+}
+
+// GFF3 attributes have specific percent encoding rules, the list below are required, all others are forbidden
+/*
+tab (%09)
+newline (%0A)
+carriage return (%0D)
+% percent (%25)
+control characters (%00 through %1F, %7F)
+In addition, the following characters have reserved meanings in column 9 and must be escaped when used in other contexts:
+; semicolon (%3B)
+= equals (%3D)
+& ampersand (%26)
+, comma (%2C)
+ */
+
+const encodings = new Map([
+    ["%09", "\t"],
+    ["%0A", "\n"],
+    ["%0D", "\r"],
+    ["%25", "%"],
+    ["%3B", ";"],
+    ["%3D", "="],
+    ["%26", "&"],
+    ["%2C", ","]
+]);
+
+function decodeGFFAttribute(str, relaxed = false) {
+
+    if (!str.includes("%")) {
+        return str
+    }
+    if (relaxed) {
+        return decodeURIComponent(str);
+    }
+    let decoded = "";
+    for (let i = 0; i < str.length; i++) {
+
+        if (str.charCodeAt(i) === 37 && i < str.length - 2) {
+            const key = str.substring(i, i + 3);
+            if (encodings.has(key)) {
+                decoded += encodings.get(key);
+            } else {
+                decoded += key;
+            }
+            i += 2;
+        } else {
+            decoded += str.charAt(i);
+        }
+    }
+    return decoded
+
+}
+
+/**
+ * Wrapper class to record a decoding error.
+ */
+
+class DecodeError {
+    constructor(message) {
+        this.message = message;
+    }
+}
+
+/**
+ * Decode the UCSC bed format.  Only the first 3 columns (chr, start, end) are required.   The remaining columns
+ * must follow standard bed order, but we will tolerate deviations after column 3.
+ *
+ * @param tokens
+ * @param ignore
+ * @returns decoded feature, or null if this is not a valid record
+ */
+function decodeBed(tokens, header) {
+
+
+    if (tokens.length < 3) return undefined
+
+    header && header.gffTags;
+
+    const chr = tokens[0];
+    const start = parseInt(tokens[1]);
+    const end = tokens.length > 2 ? parseInt(tokens[2]) : start + 1;
+    if (isNaN(start) || isNaN(end)) {
+        return new DecodeError(`Unparsable bed record.`)
+    }
+    const feature = new UCSCBedFeature({chr: chr, start: start, end: end, score: 1000});
+
+    try {
+        if (tokens.length > 3) {
+
+            // Potentially parse name field as GFF column 9 style streng.
+            if (tokens[3].indexOf(';') > 0 && tokens[3].indexOf('=') > 0) {
+                const attributeKVs = parseAttributeString(tokens[3], '=', true);
+                feature.attributes = {};
+                for (let kv of attributeKVs) {
+                    feature.attributes[kv[0]] = kv[1];
+                    if (header.nameField != undefined && kv[0] === header.nameField) {
+                        feature.name = kv[1];
+                    }
+                }
+            }
+            if (!feature.name) {
+                feature.name = tokens[3] === '.' ? '' : tokens[3];
+            }
+        }
+
+        if (tokens.length > 4) {
+            feature.score = tokens[4] === '.' ? 0 : Number(tokens[4]);
+            if (isNaN(feature.score)) {
+                return feature
+            }
+        }
+
+        if (tokens.length > 5) {
+            feature.strand = tokens[5];
+            if (!(feature.strand === '.' || feature.strand === '+' || feature.strand === '-')) {
+                return feature
+            }
+        }
+
+        if (tokens.length > 6) {
+            feature.cdStart = parseInt(tokens[6]);
+            if (isNaN(feature.cdStart)) {
+                return feature
+            }
+        }
+
+        if (tokens.length > 7) {
+            feature.cdEnd = parseInt(tokens[7]);
+            if (isNaN(feature.cdEnd)) {
+                return feature
+            }
+        }
+
+        if (tokens.length > 8) {
+            if (tokens[8] !== "." && tokens[8] !== "0")
+                feature.color = IGVColor.createColorString(tokens[8]);
+        }
+
+        if (tokens.length > 11) {
+            const exonCount = parseInt(tokens[9]);
+            // Some basic validation
+            if (exonCount > 1000) {
+                // unlikely
+                return feature
+            }
+
+            const exonSizes = tokens[10].replace(/,$/, '').split(',');
+            const exonStarts = tokens[11].replace(/,$/, '').split(',');
+            if (!(exonSizes.length === exonStarts.length && exonCount === exonSizes.length)) {
+                return feature
+            }
+
+            const exons = [];
+            for (let i = 0; i < exonCount; i++) {
+                const eStart = start + parseInt(exonStarts[i]);
+                const eEnd = eStart + parseInt(exonSizes[i]);
+                exons.push({start: eStart, end: eEnd});
+            }
+            if (exons.length > 0) {
+                findUTRs$1(exons, feature.cdStart, feature.cdEnd);
+                feature.exons = exons;
+            }
+        }
+
+        // Optional extra columns
+        if (header) {
+            let thicknessColumn = header.thicknessColumn;
+            let colorColumn = header.colorColumn;
+            if (colorColumn && colorColumn < tokens.length) {
+                feature.color = IGVColor.createColorString(tokens[colorColumn]);
+            }
+            if (thicknessColumn && thicknessColumn < tokens.length) {
+                feature.thickness = tokens[thicknessColumn];
+            }
+        }
+    } catch
+        (e) {
+
+    }
+
+    return feature
+}
+
+/**
+ * Decode a UCSC repeat masker record.
+ */
+function decodeRepeatMasker(tokens, header) {
+
+    /**
+     * Columns, from UCSC documentation
+     *
+     * 0  bin    585    smallint(5) unsigned    Indexing field to speed chromosome range queries.
+     * 1  swScore    1504    int(10) unsigned    Smith Waterman alignment score
+     * 2  milliDiv    13    int(10) unsigned    Base mismatches in parts per thousand
+     * 3  milliDel    4    int(10) unsigned    Bases deleted in parts per thousand
+     * 4  milliIns    13    int(10) unsigned    Bases inserted in parts per thousand
+     * 5  genoName    chr1    varchar(255)    Genomic sequence name
+     * 6  genoStart    10000    int(10) unsigned    Start in genomic sequence
+     * 7  genoEnd    10468    int(10) unsigned    End in genomic sequence
+     * 8  genoLeft    -249240153    int(11)    -#bases after match in genomic sequence
+     * 9  strand    +    char(1)    Relative orientation + or -
+     * 10 repName    (CCCTAA)n    varchar(255)    Name of repeat
+     * 11 repClass    Simple_repeat    varchar(255)    Class of repeat
+     * 12 repFamily    Simple_repeat    varchar(255)    Family of repeat
+     * 13 repStart    1    int(11)    Start (if strand is +) or -#bases after match (if strand is -) in repeat sequence
+     * 14 repEnd    463    int(11)    End in repeat sequence
+     * 15 repLeft    0    int(11)    -#bases after match (if strand is +) or start (if strand is -) in repeat sequence
+     * 16 id    1    char(1)    First digit of id field in RepeatMasker .out file. Best ignored.
+     */
+    if (tokens.length <= 15) return undefined
+
+    const feature = {
+        swScore: Number.parseInt(tokens[1]),
+        milliDiv: Number.parseInt(tokens[2]),
+        milliDel: Number.parseInt(tokens[3]),
+        milliIns: Number.parseInt(tokens[4]),
+        chr: tokens[5],
+        start: Number.parseInt(tokens[6]),
+        end: Number.parseInt(tokens[7]),
+        //genoLeft: tokens[8],
+        strand: tokens[9],
+        repName: tokens[10],
+        repClass: tokens[11],
+        repFamily: tokens[12],
+        repStart: Number.parseInt(tokens[13]),
+        repEnd: Number.parseInt(tokens[14]),
+        repLeft: Number.parseInt(tokens[15])
+    };
+
+    return feature
+
+}
+
+/**
+ * Decode a UCSC "genePred" record.
+ *
+ * @param tokens
+ * @param ignore
+ * @returns {*}
+ */
+function decodeGenePred(tokens, header) {
+
+    var shift = header.shift === undefined ? 0 : 1;
+
+    if (tokens.length <= 9 + shift) return undefined
+
+    const cdStart = parseInt(tokens[5 + shift]);
+    const cdEnd = parseInt(tokens[6 + shift]);
+    var feature = {
+        name: tokens[0 + shift],
+        chr: tokens[1 + shift],
+        strand: tokens[2 + shift],
+        start: parseInt(tokens[3 + shift]),
+        end: parseInt(tokens[4 + shift]),
+        cdStart: cdStart,
+        cdEnd: cdEnd,
+        id: tokens[0 + shift]
+    };
+    const exons = decodeExons(parseInt(tokens[7 + shift]), tokens[8 + shift], tokens[9 + shift]);
+    findUTRs$1(exons, cdStart, cdEnd);
+
+    feature.exons = exons;
+
+    return feature
+
+}
+
+/**
+ * Decode a UCSC "genePredExt" record.  refGene files are in this format.
+ *
+ * @param tokens
+ * @param ignore
+ * @returns {*}
+ */
+function decodeGenePredExt(tokens, header) {
+
+    var shift = header.shift === undefined ? 0 : 1;
+
+    if (tokens.length <= 11 + shift) return undefined
+
+    const cdStart = parseInt(tokens[5 + shift]);
+    const cdEnd = parseInt(tokens[6 + shift]);
+    const feature = {
+        name: tokens[11 + shift],
+        chr: tokens[1 + shift],
+        strand: tokens[2 + shift],
+        start: parseInt(tokens[3 + shift]),
+        end: parseInt(tokens[4 + shift]),
+        cdStart: cdStart,
+        cdEnd: cdEnd,
+        id: tokens[0 + shift]
+    };
+
+    const exons = decodeExons(parseInt(tokens[7 + shift]), tokens[8 + shift], tokens[9 + shift]);
+    findUTRs$1(exons, cdStart, cdEnd);
+
+    feature.exons = exons;
+
+    return feature
+}
+
+/**
+ * Decode a UCSC "refFlat" record
+ * @param tokens
+ * @param ignore
+ * @returns {*}
+ */
+function decodeReflat(tokens, header) {
+
+    var shift = header.shift === undefined ? 0 : 1;
+
+    if (tokens.length <= 10 + shift) return undefined
+
+    const cdStart = parseInt(tokens[6 + shift]);
+    const cdEnd = parseInt(tokens[7 + shift]);
+    var feature = {
+        name: tokens[0 + shift],
+        id: tokens[1 + shift],
+        chr: tokens[2 + shift],
+        strand: tokens[3 + shift],
+        start: parseInt(tokens[4 + shift]),
+        end: parseInt(tokens[5 + shift]),
+        cdStart: cdStart,
+        cdEnd: cdEnd
+    };
+
+    const exons = decodeExons(parseInt(tokens[8 + shift]), tokens[9 + shift], tokens[10 + shift]);
+    findUTRs$1(exons, cdStart, cdEnd);
+    feature.exons = exons;
+
+    return feature
+}
+
+/**
+ * Decode a UCS PSL record *
+ * @param tokens
+ * @param header
+ * @returns {DecodeError|UCSCBedFeature|undefined}
+ */
+function decodePSL(tokens, header) {
+
+    /*
+    * 0 matches - Number of bases that match that aren't repeats
+    * 1 misMatches - Number of bases that don't match
+    * 2 repMatches - Number of bases that match but are part of repeats
+    * 3 nCount - Number of "N" bases
+    * 4 qNumInsert - Number of inserts in query
+    * 5 qBaseInsert - Number of bases inserted in query
+    * 6 tNumInsert - Number of inserts in target
+    * 7 tBaseInsert - Number of bases inserted in target
+    * 8 strand - "+" or "-" for query strand. For translated alignments, second "+"or "-" is for target genomic strand.
+    * 9 qName - Query sequence name
+    * 10 qSize - Query sequence size.
+    * 11 qStart - Alignment start position in query
+    * 12 qEnd - Alignment end position in query
+    * 13 tName - Target sequence name
+    * 14 tSize - Target sequence size
+    * 15 tStart - Alignment start position in target
+    * 16 tEnd - Alignment end position in target
+    * 17 blockCount - Number of blocks in the alignment (a block contains no gaps)
+    * 18 blockSizes - Comma-separated list of sizes of each block. If the query is a protein and the target the genome, blockSizes are in amino acids. See below for more information on protein query PSLs.
+    * 19 qStarts - Comma-separated list of starting positions of each block in query
+    * 20 tStarts - Comma-separated list of starting positions of each block in target
+     */
+
+
+    if (tokens.length < 21) return undefined
+
+    const chr = tokens[13];
+    const start = parseInt(tokens[15]);
+    const end = parseInt(tokens[16]);
+    const strand = tokens[8].charAt(0);
+    const exonCount = parseInt(tokens[17]);
+    const exons = [];
+    const exonStarts = tokens[20].replace(/,$/, '').split(',');
+    const exonSizes = tokens[18].replace(/,$/, '').split(',');
+
+    for (let i = 0; i < exonCount; i++) {
+        const start = parseInt(exonStarts[i]);
+        const end = start + parseInt(exonSizes[i]);
+        exons.push({start: start, end: end});
+    }
+
+    return new PSLFeature({chr, start, end, strand, exons, tokens})
+}
+
+
+function decodeExons(exonCountToken, exonStartsToken, exonEndsToken) {
+
+    const exonCount = parseInt(exonCountToken);
+    const exonStarts = exonStartsToken.replace(/,$/, '').split(',');
+    const exonEnds = exonEndsToken.replace(/,$/, '').split(',');
+    const exons = [];
+    for (let i = 0; i < exonCount; i++) {
+        const start = parseInt(exonStarts[i]);
+        const end = parseInt(exonEnds[i]);
+        exons.push({start: start, end: end});
+    }
+    return exons
+
+}
+
+function findUTRs$1(exons, cdStart, cdEnd) {
+
+    for (let exon of exons) {
+        const end = exon.end;
+        const start = exon.start;
+        if (end < cdStart || start > cdEnd) {
+            exon.utr = true;
+        } else {
+            if (cdStart >= start && cdStart <= end) {
+                exon.cdStart = cdStart;
+            }
+            if (cdEnd >= start && cdEnd <= end) {
+                exon.cdEnd = cdEnd;
+            }
+        }
+    }
+
+}
+
+function decodePeak(tokens, header) {
+
+    var tokenCount, chr, start, end, strand, name, score, qValue, signal, pValue;
+
+    tokenCount = tokens.length;
+    if (tokenCount < 9) {
+        return undefined
+    }
+
+    chr = tokens[0];
+    start = parseInt(tokens[1]);
+    end = parseInt(tokens[2]);
+    name = tokens[3];
+    score = Number(tokens[4]);
+    strand = tokens[5].trim();
+    signal = Number(tokens[6]);
+    pValue = Number(tokens[7]);
+    qValue = Number(tokens[8]);
+
+    if (score === 0) score = signal;
+
+    return {
+        chr: chr, start: start, end: end, name: name, score: score, strand: strand, signal: signal,
+        pValue: pValue, qValue: qValue
+    }
+}
+
+function decodeBedGraph(tokens, header) {
+
+    var chr, start, end, value;
+
+    if (tokens.length <= 3) return undefined
+
+    chr = tokens[0];
+    start = parseInt(tokens[1]);
+    end = parseInt(tokens[2]);
+    value = Number(tokens[3]);
+    const feature = {chr: chr, start: start, end: end, value: value};
+
+    // Optional extra columns
+    if (header) {
+        let colorColumn = header.colorColumn;
+        if (colorColumn && colorColumn < tokens.length) {
+            feature.color = IGVColor.createColorString(tokens[colorColumn]);
+        }
+    }
+
+    return feature
+}
+
+function decodeWig(tokens, header) {
+
+    const wig = header.wig;
+
+    if (wig && wig.format === "fixedStep") {
+        const ss = (wig.index * wig.step) + wig.start;
+        const ee = ss + wig.span;
+        const value = Number(tokens[0]);
+        ++(wig.index);
+        return isNaN(value) ? null : {chr: wig.chrom, start: ss, end: ee, value: value}
+    } else if (wig && wig.format === "variableStep") {
+
+        if (tokens.length < 2) return null
+        const ss = parseInt(tokens[0], 10) - 1;
+        const ee = ss + wig.span;
+        const value = Number(tokens[1]);
+        return isNaN(value) ? null : {chr: wig.chrom, start: ss, end: ee, value: value}
+
+    } else {
+        return decodeBedGraph(tokens)
+    }
+}
+
+function decodeSNP(tokens, header) {
+
+    if (tokens.length < 6) return undefined
+
+    const autoSql = [
+        'bin',
+        'chr',
+        'start',
+        'end',
+        'name',
+        'score',
+        'strand',
+        'refNCBI',
+        'refUCSC',
+        'observed',
+        'molType',
+        'class',
+        'valid',
+        'avHet',
+        'avHetSE',
+        'func',
+        'locType',
+        'weight',
+        'exceptions',
+        'submitterCount',
+        'submitters',
+        'alleleFreqCount',
+        'alleles',
+        'alleleNs',
+        'alleleFreqs',
+        'bitfields'
+    ];
+
+
+    const feature = {
+        chr: tokens[1],
+        start: Number.parseInt(tokens[2]),
+        end: Number.parseInt(tokens[3]),
+        name: tokens[4],
+        score: Number.parseInt(tokens[5])
+    };
+
+    const n = Math.min(tokens.length, autoSql.length);
+    for (let i = 6; i < n; i++) {
+        feature[autoSql[i]] = tokens[i];
+    }
+    return feature
+
+}
+
+class UCSCBedFeature {
+
+    constructor(properties) {
+        Object.assign(this, properties);
+    }
+
+    getAttributeValue(attributeName) {
+        if (this.hasOwnProperty(attributeName)) {
+            return this[attributeName]
+        } else if (this.attributes) {
+            return this.attributes[attributeName]
+        }
+    }
+}
+
+/*
+* 0 matches - Number of bases that match that aren't repeats
+* 1 misMatches - Number of bases that don't match
+* 2 repMatches - Number of bases that match but are part of repeats
+* 3 nCount - Number of "N" bases
+* 4 qNumInsert - Number of inserts in query
+* 5 qBaseInsert - Number of bases inserted in query
+* 6 tNumInsert - Number of inserts in target
+* 7 tBaseInsert - Number of bases inserted in target
+* 8 strand - "+" or "-" for query strand. For translated alignments, second "+"or "-" is for target genomic strand.
+* 9 qName - Query sequence name
+* 10 qSize - Query sequence size.
+* 11 qStart - Alignment start position in query
+* 12 qEnd - Alignment end position in query
+* 13 tName - Target sequence name
+* 14 tSize - Target sequence size
+* 15 tStart - Alignment start position in target
+* 16 tEnd - Alignment end position in target
+* 17 blockCount - Number of blocks in the alignment (a block contains no gaps)
+* 18 blockSizes - Comma-separated list of sizes of each block. If the query is a protein and the target the genome, blockSizes are in amino acids. See below for more information on protein query PSLs.
+* 19 qStarts - Comma-separated list of starting positions of each block in query
+* 20 tStarts - Comma-separated list of starting positions of each block in target
+ */
+
+class PSLFeature {
+
+
+    constructor(properties) {
+        Object.assign(this, properties);
+    }
+
+    get score() {
+        const tokens = this.tokens;
+        const match = parseInt(tokens[0]);
+        const repMatch = parseInt(tokens[2]);
+        const misMatch = parseInt(tokens[1]);
+        const qGapCount = parseInt(tokens[4]);
+        const tGapCount = parseInt(tokens[6]);
+        const qSize = parseInt(tokens[10]);
+        return Math.floor((1000 * (match + repMatch - misMatch - qGapCount - tGapCount)) / qSize)
+    }
+
+    get matches() {
+        return this.tokens[0]
+    }
+
+    get misMatches() {
+        return this.tokens[1]
+    }
+
+    get repMatches() {
+        return this.tokens[2]
+    }
+
+    get nCount() {
+        return this.tokens[3]
+    }
+
+    get qNumInsert() {
+        return this.tokens[4]
+    }
+
+    get qBaseInsert() {
+        return this.tokens[5]
+    }
+
+    get tNumInsert() {
+        return this.tokens[6]
+    }
+
+    get tBaseInsert() {
+        return this.tokens[7]
+
+    }
+
+    popupData() {
+        return [
+            {name: 'chr', value: this.chr},
+            {name: 'start', value: this.start + 1},
+            {name: 'end', value: this.end},
+            {name: 'strand', value: this.strand},
+            {name: 'score', value: this.score},
+            {name: 'match', value: this.matches},
+            {name: "mis-match", value: this.misMatches},
+            {name: "rep. match", value: this.repMatches},
+            {name: "N's", value: this.nCount},
+            {name: 'Q gap count', value: this.qNumInsert},
+            {name: 'Q gap bases', value: this.qBaseInsert},
+            {name: 'T gap count', value: this.tNumInsert},
+            {name: 'T gap bases', value: this.tBaseInsert},
+        ]
+    }
+
+}
+
+function decodeFusionJuncSpan(tokens, header) {
+
+    /*
+     Format:
+
+     0       #scaffold
+     1       fusion_break_name
+     2       break_left
+     3       break_right
+     4       num_junction_reads
+     5       num_spanning_frags
+     6       spanning_frag_coords
+
+     0       B3GNT1--NPSR1
+     1       B3GNT1--NPSR1|2203-10182
+     2       2203
+     3       10182
+     4       189
+     5       1138
+     6       1860-13757,1798-13819,1391-18127,1443-17174,...
+
+     */
+
+
+    if (tokens.length < 7) return undefined
+
+    var chr = tokens[0];
+    var fusion_name = tokens[1];
+    var junction_left = parseInt(tokens[2]);
+    var junction_right = parseInt(tokens[3]);
+    var num_junction_reads = parseInt(tokens[4]);
+    var num_spanning_frags = parseInt(tokens[5]);
+
+    var spanning_frag_coords_text = tokens[6];
+
+    var feature = {
+        chr: chr,
+        name: fusion_name,
+        junction_left: junction_left,
+        junction_right: junction_right,
+        num_junction_reads: num_junction_reads,
+        num_spanning_frags: num_spanning_frags,
+        spanning_frag_coords: [],
+
+        start: -1,
+        end: -1
+    }; // set start and end later based on min/max of span coords
+
+    var min_coord = junction_left;
+    var max_coord = junction_right;
+
+    if (num_spanning_frags > 0) {
+
+        var coord_pairs = spanning_frag_coords_text.split(',');
+
+        for (var i = 0; i < coord_pairs.length; i++) {
+            var split_coords = coord_pairs[i].split('-');
+
+            var span_left = split_coords[0];
+            var span_right = split_coords[1];
+
+            if (span_left < min_coord) {
+                min_coord = span_left;
+            }
+            if (span_right > max_coord) {
+                max_coord = span_right;
+            }
+            feature.spanning_frag_coords.push({left: span_left, right: span_right});
+
+        }
+    }
+
+    feature.start = min_coord;
+    feature.end = max_coord;
+
+
+    return feature
+
+}
+
+function decodeGtexGWAS(tokens, header) {
+    //chrom	chromStart	chromEnd	Strongest SNP-risk allele	Disease/Phenotype	P-value	Odds ratio or beta	PUBMEDID
+    //1	1247493	1247494	rs12103-A	Inflammatory bowel disease	8.00E-13	1.1	23128233
+
+    const tokenCount = tokens.length;
+    if (tokenCount < 7) {
+        return null
+    }
+    const feature = {
+        chr: tokens[0],
+        start: parseInt(tokens[1]) - 1,
+        end: parseInt(tokens[2]),
+        'Strongest SNP-risk allele': tokens[3],
+        'Disease/Phenotype': tokens[4],
+        'P-value': tokens[5],
+        'Odds ratio or beta': tokens[6],
+    };
+    if (tokens.length > 6) {
+        feature['PUBMEDID'] = `<a target = "blank" href = "https://www.ncbi.nlm.nih.gov/pubmed/${tokens[7]}">${tokens[7]}</a>`;
+    }
+    return feature
+}
+
+/**
+ * Decode a custom columnar format.  Required columns are 'chr' and 'start'
+ *
+ * @param tokens
+ * @param ignore
+ * @returns decoded feature, or null if this is not a valid record
+ */
+function decodeCustom(tokens, header) {
+
+    const format = header.customFormat;
+
+    if (tokens.length < format.fields.length) return undefined
+
+    const coords = format.coords || 0;
+
+    const chr = tokens[format.chr];
+    const start = parseInt(tokens[format.start]) - coords;
+    const end = format.end !== undefined ? parseInt(tokens[format.end]) : start + 1;
+
+    const feature = {chr: chr, start: start, end: end};
+
+    if (format.fields) {
+        format.fields.forEach(function (field, index) {
+
+            if (index !== format.chr &&
+                index !== format.start &&
+                index !== format.end) {
+
+                feature[field] = tokens[index];
+            }
+        });
+    }
+
+    return feature
+
+}
+
+/**
+ * Decode a gcnv record, a bed style format encoding copy number variation
+ *
+ * @param tokens
+ * @param header
+ */
+
+function decodeGcnv(tokens, header) {
+
+    const columnNames = header.columnNames;
+    if (!columnNames) {
+        throw Error("Sample names are not defined.   Missing column headers?")
+    }
+    const sampleCount = columnNames.length - 3;
+
+    const chr = tokens[0];
+    const start = parseInt(tokens[1]);
+    const end = parseInt(tokens[2]);
+    const values = tokens.slice(3).map(Number);
+
+    if (values.length == sampleCount) {
+        return {
+            chr: chr,
+            start: start,
+            end: end,
+            values: values,
+        }
+    } else {
+        // TODO Throw error?
+        console.warn(`${chr}:${start}-${end} row contains ${values.length} sample columns instead of the expected ${sampleCount} columns. Skipping...`);
+        return undefined
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ *  Parser for column style (tab delimited, etc) text file formats (bed, gff, vcf, etc).
+ *
+ *
+ */
+
+
+/**
+ * Return a parser for the given file format.
+ */
+class FeatureParser {
+
+    constructor(config) {
+
+        this.config = config;
+        this.header = {};
+        if (config.nameField) {
+            this.header.nameField = config.nameField;
+        }
+
+        this.skipRows = 0;   // The number of fixed header rows to skip.  Override for specific types as needed
+
+        if (config.decode) {
+            this.decode = config.decode;
+            this.delimiter = config.delimiter || "\t";
+        } else if (config.format) {
+            this.header.format = config.format.toLowerCase();
+            this.setDecoder(this.header.format);
+        }
+
+        if (!this.delimiter) {
+            this.delimiter = "\t";
+        }
+    }
+
+    /**
+     * Parse metadata from the file.   A variety of conventions are in use to supply metadata about file contents
+     * through header lines (e.g. 'track') and # directives. This method unifies metadata as properties of a
+     * 'header' object.
+     *
+     * @param data
+     * @returns {{}}
+     */
+    async parseHeader(dataWrapper) {
+
+        let header = this.header;
+        let columnNames;
+        let line;
+        while ((line = await dataWrapper.nextLine()) !== undefined) {
+            if (line.startsWith("track") || line.startsWith("#track")) {
+                let h = parseTrackLine$1(line);
+                Object.assign(header, h);
+            } else if (line.startsWith("browser")) ; else if (line.startsWith("#columns")) {
+                let h = parseColumnsDirective$1(line);
+                Object.assign(header, h);
+            } else if (line.startsWith("##gff-version 3")) {
+                header.format = "gff3";
+            } else if (line.startsWith("#gffTags")) {
+                header.gffTags = true;
+            } else if (line.startsWith("fixedStep") || line.startsWith("variableStep")) {
+                // Wig directives -- we are in the data section
+                break
+            } else if (line.startsWith("#")) {
+                const tokens = line.split(this.delimiter || "\t");
+                if (tokens.length > 1) {
+                    columnNames = tokens;   // Possible column names
+                }
+            } else {
+                // All directives that could change the format, and thus decoder, should have been read by now.
+                this.setDecoder(header.format);
+
+                // If the line can be parsed as a feature assume we are beyond the header, if any
+                const tokens = line.split(this.delimiter || "\t");
+                try {
+                    const tmpHeader = Object.assign({columnNames}, header);
+                    if (this.decode(tokens, tmpHeader)) {
+                        break
+                    } else {
+                        if (tokens.length > 1) {
+                            columnNames = tokens; // possible column names
+                        }
+                    }
+                } catch (e) {
+                    // Not a feature
+                    if (tokens.length > 1) {
+                        columnNames = tokens; // possible column names
+                    }
+                }
+            }
+        }
+
+        if (columnNames) {
+            header.columnNames = columnNames;
+            for (let n = 0; n < columnNames.length; n++) {
+                if (columnNames[n] === "color" || columnNames[n] === "colour") {
+                    header.colorColumn = n;
+                } else if (columnNames[n] === "thickness") {
+                    header.thicknessColumn = n;
+                }
+            }
+        }
+
+        this.header = header;    // Directives might be needed for parsing lines
+        return header
+    }
+
+    async parseFeatures(dataWrapper) {
+
+        const allFeatures = [];
+        const decode = this.decode;
+        const format = this.header.format;
+        const delimiter = this.delimiter || "\t";
+        let i = 0;
+        let errorCount = 0;
+        let line;
+        while ((line = await dataWrapper.nextLine()) !== undefined) {
+            i++;
+            if (i <= this.skipRows) continue
+
+            if (!line || line.startsWith("track") || line.startsWith("#") || line.startsWith("browser")) {
+                continue
+            } else if (format === "wig" && line.startsWith("fixedStep")) {
+                this.header.wig = parseFixedStep(line);
+                continue
+            } else if (format === "wig" && line.startsWith("variableStep")) {
+                this.header.wig = parseVariableStep(line);
+                continue
+            }
+
+            const tokens = line.split(delimiter);
+            if (tokens.length < 1) {
+                continue
+            }
+
+            const feature = decode(tokens, this.header);
+
+            if (feature instanceof DecodeError) {
+                errorCount++;
+                if (errorCount > 0) {
+                    console.error(`Error parsing line '${line}': ${feature.message}`);
+                }
+                continue
+            }
+
+            if (feature) {
+                allFeatures.push(feature);
+            }
+        }
+
+        // Special hack for bedPE
+        if (decode === decodeBedpe) {
+            fixBedPE(allFeatures);
+        }
+
+        return allFeatures
+
+    }
+
+    setDecoder(format) {
+
+        switch (format) {
+            case "narrowpeak":
+            case "broadpeak":
+            case "regionpeak":
+            case "peaks":
+                this.decode = decodePeak;
+                this.delimiter = this.config.delimiter || /\s+/;
+                break
+            case "bedgraph":
+                this.decode = decodeBedGraph;
+                this.delimiter = /\s+/;
+                break
+            case "wig":
+                this.decode = decodeWig;
+                this.delimiter = this.config.delimiter || /\s+/;
+                break
+            case "gff3" :
+            case "gff":
+                this.decode = decodeGFF3;
+                this.delimiter = "\t";
+                break
+            case "gtf" :
+                this.decode = decodeGTF;
+                this.delimiter = "\t";
+                break
+            case "fusionjuncspan":
+                // bhaas, needed for FusionInspector view
+                this.decode = decodeFusionJuncSpan;
+                this.delimiter = this.config.delimiter || /\s+/;
+                break
+            case "gtexgwas":
+                this.skipRows = 1;
+                this.decode = decodeGtexGWAS;
+                this.delimiter = "\t";
+                break
+            case "refflat":
+                this.decode = decodeReflat;
+                this.delimiter = this.config.delimiter || /\s+/;
+                break
+            case "genepred":
+                this.decode = decodeGenePred;
+                this.delimiter = this.config.delimiter || /\s+/;
+                break
+            case "genepredext":
+                this.decode = decodeGenePredExt;
+                this.delimiter = this.config.delimiter || /\s+/;
+                break
+            case "ensgene":
+                this.decode = decodeGenePred;
+                this.header.shift = 1;
+                this.delimiter = this.config.delimiter || /\s+/;
+                break
+            case "refgene":
+                this.decode = decodeGenePredExt;
+                this.delimiter = this.config.delimiter || /\s+/;
+                this.header.shift = 1;
+                break
+            case "bed":
+                this.decode = decodeBed;
+                this.delimiter = this.config.delimiter || /\s+/;
+                break
+            case "bedpe":
+            case "hiccups":
+                this.decode = decodeBedpe;
+                this.delimiter = this.config.delimiter || "\t";
+                break
+            case "bedpe-domain":
+                this.decode = decodeBedpeDomain;
+                this.headerLine = true;
+                this.delimiter = this.config.delimiter || "\t";
+                break
+            case "bedpe-loop":
+                this.decode = decodeBedpe;
+                this.delimiter = this.config.delimiter || "\t";
+                this.header = {colorColumn: 7};
+                break
+            case "interact":
+                this.decode = decodeInteract;
+                this.delimiter = this.config.delimiter || /\s+/;
+                break
+            case "snp":
+                this.decode = decodeSNP;
+                this.delimiter = "\t";
+                break
+            case "rmsk":
+                this.decode = decodeRepeatMasker;
+                this.delimiter = "\t";
+                break
+            case "gcnv":
+                this.decode = decodeGcnv;
+                this.delimiter = "\t";
+                break
+            default:
+                const customFormat = getFormat(format);
+                if (customFormat !== undefined) {
+                    this.decode = decodeCustom;
+                    this.header.customFormat = customFormat;
+                    this.delimiter = customFormat.delimiter || "\t";
+                } else {
+                    this.decode = decodeBed;
+                    this.delimiter = this.config.delimiter || /\s+/;
+                }
+        }
+
+    }
+}
+
+function parseTrackLine$1(line) {
+
+    const properties = {};
+    const tokens = line.split(/(?:")([^"]+)(?:")|([^\s"]+)(?=\s+|$)/g);
+
+    // Clean up tokens array
+    let curr;
+    const tmp = [];
+    for (let tk of tokens) {
+        if (!tk || tk.trim().length === 0) continue
+        if (tk.endsWith("=")) {
+            curr = tk;
+        } else if (curr) {
+            tmp.push(curr + tk);
+            curr = undefined;
+        } else {
+            tmp.push(tk);
+        }
+    }
+
+    for (let str of tmp) {
+        if (!str) return
+        var kv = str.split('=', 2);
+        if (kv.length === 2) {
+            const key = kv[0].trim();
+            const value = kv[1].trim();
+            if (properties.hasOwnProperty(key)) {
+                let currentValue = properties[key];
+                if (Array.isArray(currentValue)) {
+                    currentValue.push(value);
+                } else {
+                    properties[key] = [currentValue, value];
+                }
+            } else {
+                properties[key] = value;
+            }
+        }
+    }
+    if ("interact" == properties["type"]) {
+        properties["format"] = "interact";
+    } else if ("gcnv" === properties["type"]) {
+        properties["format"] = "gcnv";
+    }
+    return properties
+}
+
+function parseColumnsDirective$1(line) {
+
+    let properties = {};
+    let t1 = line.split(/\s+/);
+
+    if (t1.length === 2) {
+        let t2 = t1[1].split(";");
+        t2.forEach(function (keyValue) {
+            let t = keyValue.split("=");
+            if (t[0] === "color") {
+                properties.colorColumn = Number.parseInt(t[1]) - 1;
+            } else if (t[0] === "thickness") {
+                properties.thicknessColumn = Number.parseInt(t[1]) - 1;
+            }
+        });
+    }
+
+    return properties
+}
+
+function parseFixedStep(line) {
+    const tokens = line.split(/\s+/);
+    const chrom = tokens[1].split("=")[1];
+    const start = parseInt(tokens[2].split("=")[1], 10) - 1;
+    const step = parseInt(tokens[3].split("=")[1], 10);
+    const span = (tokens.length > 4) ? parseInt(tokens[4].split("=")[1], 10) : 1;
+    return {format: "fixedStep", chrom, start, step, span, index: 0}
+}
+
+function parseVariableStep(line) {
+    const tokens = line.split(/\s+/);
+    const chrom = tokens[1].split("=")[1];
+    const span = tokens.length > 2 ? parseInt(tokens[2].split("=")[1], 10) : 1;
+    return {format: "variableStep", chrom, span}
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 Regents of the University of California
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const fixColor = (colorString) => {
+    if (isString$2(colorString)) {
+        return (colorString.indexOf(",") > 0 && !(colorString.startsWith("rgb(") || colorString.startsWith("rgba("))) ?
+            `rgb(${colorString})` : colorString
+    } else {
+        return colorString
+    }
+};
+
+/**
+ * A collection of properties and methods shared by all (or most) track types.
+ *
+ * @param config
+ * @param browser
+ * @constructor
+ */
+class TrackBase {
+
+    static defaults = {
+        height: 50,
+        autoHeight: false,
+        visibilityWindow: undefined,   // Identifies property that should be copied from config
+        color: undefined,  // Identifies property that should be copied from config
+        altColor: undefined,  // Identifies property that should be copied from config
+        supportHiDPI: true
+    }
+
+    constructor(config, browser) {
+        this.browser = browser;
+        this.init(config);
+    }
+
+    /**
+     * Initialize track properties from the config object.  This method is typically overriden in subclasses, which
+     * will call this implementation as super.init(config).
+     *
+     * @param config
+     */
+    init(config) {
+
+        this.config = config;
+
+        if (config.displayMode) {
+            config.displayMode = config.displayMode.toUpperCase();
+        }
+
+        // Set default properties
+        const defaults = Object.assign({}, TrackBase.defaults);
+        if(this.constructor.defaults) {
+            for(let key of Object.keys(this.constructor.defaults)) {
+                defaults[key] = this.constructor.defaults[key];
+            }
+        }
+        for(let key of Object.keys(defaults)) {
+            this[key] = config.hasOwnProperty(key) ? config[key] : defaults[key];
+            if(key === 'color' || key === 'altColor') {
+                this[key] = fixColor(this[key]);
+            }
+        }
+
+        if (config.name || config.label) {
+            this.name = config.name || config.label;
+        } else if (isFile(config.url)) {
+            this.name = config.url.name;
+        } else if (isString$2(config.url) && !config.url.startsWith("data:")) {
+            this.name = getFilename$2(config.url);
+        }
+
+        this.url = config.url;
+        if(this.config.type) this.type = this.config.type;
+        this.id = this.config.id === undefined ? this.name : this.config.id;
+        this.order = config.order;
+        this.autoscaleGroup = config.autoscaleGroup;
+        this.removable = config.removable === undefined ? true : config.removable;      // Defaults to true
+        this.minHeight = config.minHeight || Math.min(25, this.height);
+        this.maxHeight = config.maxHeight || Math.max(1000, this.height);
+
+        if (config.onclick) {
+            this.onclick = config.onclick;
+            config.onclick = undefined;   // functions cannot be saved in sessions, clear it here.
+        }
+
+        if (config.description) {
+            // Override description -- displayed when clicking on track label.  Convert to function if neccessary
+            if (typeof config.description === 'function') {
+                this.description = config.description;
+            } else {
+                this.description = () => config.description;
+            }
+        }
+
+        // Support for mouse hover text.  This can be expensive, off by default.
+        // this.hoverText = function(clickState) => return tool tip text
+        if (config.hoverTextFields) {
+            this.hoverText = hoverText.bind(this);
+        } else if (typeof this.config.hoverText === 'function') {
+            this.hoverText = this.config.hoverText;
+        }
+    }
+
+    get name() {
+        return this._name
+    }
+
+    set name(name) {
+        this._name = name;
+        if (this.trackView) {
+            this.trackView.setTrackLabelName(name);
+        }
+    }
+
+    /**
+     * Update track properties from the config object.
+     *
+     * @param config
+     */
+    updateConfig(config) {
+        this.init(config);
+    }
+
+    clearCachedFeatures() {
+        if (this.trackView) {
+            this.trackView.clearCachedFeatures();
+        }
+    }
+
+    updateViews() {
+        if (this.trackView) {
+            this.trackView.updateViews();
+        }
+    }
+
+    /**
+     * Used to create session object for bookmarking, sharing.  Only simple property values (string, number, boolean)
+     * are saved.
+     */
+    getState() {
+
+        const jsonable = (v) => !(v === undefined || typeof v === 'function' || v instanceof File || v instanceof Promise);
+
+        // Create copy of config, minus transient properties (convention is name starts with '_').  Also, all
+        // function properties are transient as they cannot be saved in json
+        const state = {};
+        for (let key of Object.keys(this.config)) {
+            if (!key.startsWith("_") && jsonable(this.config[key])) {
+                state[key] = this.config[key];
+            }
+        }
+
+        // Update original config values with any changes
+        for (let key of Object.keys(state)) {
+            if (key.startsWith("_")) continue   // transient property
+            const value = this[key];
+            if (value && (isSimpleType(value) || typeof value === "boolean" || key === "metadata")) {
+                state[key] = value;
+            }
+        }
+
+        // If user has changed other properties from defaults update state.
+        const defs = TrackBase.defaults;
+        if (this.constructor.defaults) {
+            for (let key of Object.keys(this.constructor.defaults)) {
+                defs[key] = this.constructor.defaults[key];
+            }
+        }
+        for (let key of Object.keys(defs)) {
+            if (undefined !== this[key] && defs[key] !== this[key]) {
+                state[key] = this[key];
+            }
+        }
+
+        // Flatten dataRange if present
+        if (!this.autoscale && this.dataRange) {
+            state.min = this.dataRange.min;
+            state.max = this.dataRange.max;
+        }
+
+        return state
+    }
+
+    get supportsWholeGenome() {
+        return this.config.supportsWholeGenome === true
+    }
+
+    /**
+     * Does the track support sample names.  Current sample aware tracks include VCF (with genotypes), MUT, MAF, and SEG
+     * @returns {boolean}
+     */
+    hasSamples() {
+        return false
+    }
+
+    getGenomeId() {
+        return this.browser.genome ? this.browser.genome.id : undefined
+    }
+
+    /**
+     * Set certain track properties, usually from a "track" line.  Not all UCSC properties are supported.
+     *
+     * Track configuration settings have precendence over track line properties, so if both are present ignore the
+     * track line.
+     *
+     * @param properties
+     */
+    setTrackProperties(properties) {
+
+        if (this.disposed) return   // This track was removed during async load
+
+        const tracklineConfg = {};
+        let tokens;
+        for (let key of Object.keys(properties)) {
+            switch (key.toLowerCase()) {
+                case "usescore":
+                    tracklineConfg.useScore = (
+                        properties[key] === 1 || properties[key] === "1" || properties[key] === "on" || properties[key] === true);
+                    break
+                case "visibility":
+                    //0 - hide, 1 - dense, 2 - full, 3 - pack, and 4 - squish
+                    switch (properties[key]) {
+                        case "2":
+                        case "3":
+                        case "pack":
+                        case "full":
+                            tracklineConfg.displayMode = "EXPANDED";
+                            break
+                        case "4":
+                        case "squish":
+                            tracklineConfg.displayMode = "SQUISHED";
+                            break
+                        case "1":
+                        case "dense":
+                            tracklineConfg.displayMode = "COLLAPSED";
+                    }
+                    break
+                case "color":
+                case "altcolor":
+                    tracklineConfg[key] = properties[key].startsWith("rgb(") ? properties[key] : "rgb(" + properties[key] + ")";
+                    break
+                case "featurevisiblitywindow":
+                case "visibilitywindow":
+                    tracklineConfg.visibilityWindow = Number.parseInt(properties[key]);
+                    break
+                case "maxheightpixels":
+                    tokens = properties[key].split(":");
+                    if (tokens.length === 3) {
+                        tracklineConfg.minHeight = Number.parseInt(tokens[2]);
+                        tracklineConfg.height = Number.parseInt(tokens[1]);
+                        tracklineConfg.maxHeight = Number.parseInt(tokens[0]);
+                    }
+                    break
+                case "viewlimits":
+                    if (!this.config.autoscale) {   // autoscale in the config has precedence
+                        tokens = properties[key].split(":");
+                        let min = 0;
+                        let max;
+                        if (tokens.length == 1) {
+                            max = Number(tokens[0]);
+                        } else if (tokens.length == 2) {
+                            min = Number(tokens[0]);
+                            max = Number(tokens[1]);
+                        }
+                        tracklineConfg.autoscale = false;
+                        tracklineConfg.dataRange = {min, max};
+                        this.viewLimitMin = min;
+                        this.viewLimitMax = max;
+                    }
+                case "name":
+                    tracklineConfg[key] = properties[key];
+                    break
+                case "url":
+                    tracklineConfg["infoURL"] = properties[key];
+                    break
+                case "type":
+                    const v = properties[key];
+                    if (UCSCTypeMappings.has(v)) {
+                        tracklineConfg[key] = UCSCTypeMappings.get(v);
+                    } else {
+                        tracklineConfg[key] = v;
+                    }
+                    break
+                case "graphtype":
+                    tracklineConfg["graphType"] = properties[key];
+                    break
+                default:
+                    tracklineConfg[key] = properties[key];
+            }
+        }
+
+        // Track configuration objects have precedence over track line properties in general.  The "name" property
+        // is an exception if it was derived and not explicitly entered (that is derived from the web app from filename).
+        for (let key of Object.keys(tracklineConfg)) {
+
+            if (!this.config.hasOwnProperty(key) || (key === "name" && this.config._derivedName)) {
+                let value = tracklineConfg[key];
+                if ("true" === value) value = true;
+                if ("false" === value) value = false;
+
+                this[key] = value;
+                if (key === "height" && this.trackView) {
+                    try {
+                        const h = Number.parseInt(value);
+                        this.trackView.setTrackHeight(h);
+                    } catch (e) {
+                        console.error(e);
+                    }
+                }
+            }
+        }
+    }
+
+    /**
+     * Return the features clicked over.  Default implementation assumes an array of features and only considers
+     * the genomic location.   Overriden by most subclasses.
+     *
+     * @param clickState
+     * @param features
+     * @returns {[]|*[]}
+     */
+    clickedFeatures(clickState) {
+
+        // We use the cached features rather than method to avoid async load.  If the
+        // feature is not already loaded this won't work,  but the user wouldn't be mousing over it either.
+        const features = clickState.viewport.cachedFeatures;
+
+        if (!features || !Array.isArray(features) || features.length === 0) {
+            return []
+        }
+
+        const genomicLocation = clickState.genomicLocation;
+
+        // When zoomed out we need some tolerance around genomicLocation
+        const tolerance = (clickState.referenceFrame.bpPerPixel > 0.2) ? 3 * clickState.referenceFrame.bpPerPixel : 0.2;
+        const ss = genomicLocation - tolerance;
+        const ee = genomicLocation + tolerance;
+        return (FeatureUtils.findOverlapping(features, ss, ee))
+    }
+
+    /**
+     * Default popup text function -- just extracts string and number properties in random order.
+     * @param feature
+     * @returns {Array}
+     */
+    extractPopupData(feature, genomeId) {
+
+        const filteredProperties = new Set(['row', 'color', 'chr', 'start', 'end', 'cdStart', 'cdEnd', 'strand', 'alpha']);
+        const data = [];
+
+        let alleles, alleleFreqs;
+        for (let property in feature) {
+
+            if (feature.hasOwnProperty(property) &&
+                !filteredProperties.has(property) &&
+                isSimpleType(feature[property])) {
+
+                let value = feature[property];
+                data.push({name: capitalize(property), value: value});
+
+                if (property === "alleles") {
+                    alleles = feature[property];
+                } else if (property === "alleleFreqs") {
+                    alleleFreqs = feature[property];
+                }
+            }
+        }
+
+        if (alleles && alleleFreqs) {
+
+            if (alleles.endsWith(",")) {
+                alleles = alleles.substr(0, alleles.length - 1);
+            }
+            if (alleleFreqs.endsWith(",")) {
+                alleleFreqs = alleleFreqs.substr(0, alleleFreqs.length - 1);
+            }
+
+            let a = alleles.split(",");
+            let af = alleleFreqs.split(",");
+            if (af.length > 1) {
+                let b = [];
+                for (let i = 0; i < af.length; i++) {
+                    b.push({a: a[i], af: Number(af[i])});
+                }
+                b.sort(function (x, y) {
+                    return x.af - y.af
+                });
+
+                let ref = b[b.length - 1].a;
+                if (ref.length === 1) {
+                    for (let i = b.length - 2; i >= 0; i--) {
+                        let alt = b[i].a;
+                        if (alt.length === 1) {
+                            if (!genomeId) genomeId = this.getGenomeId();
+                            const cravatLink = TrackBase.getCravatLink(feature.chr, feature.start + 1, ref, alt, genomeId);
+                            console.log(cravatLink);
+                            if (cravatLink) {
+                                data.push('<hr/>');
+                                data.push({html: cravatLink});
+                                data.push('<hr/>');
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        if (feature.attributes) {
+            for (let key of Object.keys(feature.attributes)) {
+                data.push({name: key, value: feature.attributes[key]});
+            }
+        }
+
+        // final chr position
+        let posString = `${feature.chr}:${numberFormatter$1(feature.start + 1)}-${numberFormatter$1(feature.end)}`;
+        if (feature.strand) {
+            posString += ` (${feature.strand})`;
+        }
+
+        data.push({name: 'Location', value: posString});
+
+        return data
+
+    }
+
+
+    /**
+     * Default track description -- displayed on click of track label.  This can be overriden in the track
+     * configuration, or in subclasses.
+     */
+    description() {
+
+        const wrapKeyValue = (k, v) => `<div class="igv-track-label-popup-shim"><b>${k}: </b>${v}</div>`;
+
+        let str = '<div class="igv-track-label-popup">';
+        if (this.url) {
+            if (isFile(this.url)) {
+                str += wrapKeyValue('Filename', this.url.name);
+            } else {
+                str += wrapKeyValue('URL', this.url);
+            }
+        } else {
+            str = this.name;
+        }
+        if (this.config) {
+            if (this.config.metadata) {
+                for (let key of Object.keys(this.config.metadata)) {
+                    const value = this.config.metadata[key];
+                    str += wrapKeyValue(key, value);
+                }
+            }
+
+            // Add any config properties that are capitalized
+            for (let key of Object.keys(this.config)) {
+                if (key.startsWith("_")) continue   // transient property
+                let first = key.substr(0, 1);
+                if (first !== first.toLowerCase()) {
+                    const value = this.config[key];
+                    if (value && isSimpleType(value)) {
+                        str += wrapKeyValue(key, value);
+                    }
+                }
+            }
+
+        }
+        str += '</div>';
+        return str
+    }
+
+    /**
+     * Return color for a specific feature of this track.  This default implementation is overriden by subclasses*
+     * @param f
+     * @returns {*|string|string}
+     */
+    getColorForFeature(f) {
+        return (typeof this.color === "function") ? this.color(feature) : this.color
+    }
+
+    /**
+     * Track has been permanently removed.  Release resources and other cleanup
+     */
+    dispose() {
+
+        this.disposed = true;
+
+        // This should not be neccessary, but in case there is some unknown reference holding onto this track object,
+        // for example in client code, release any resources here.
+        for (let key of Object.keys(this)) {
+            this[key] = undefined;
+        }
+    }
+
+    static getCravatLink(chr, position, ref, alt, genomeID) {
+
+        if ("hg38" === genomeID || "GRCh38" === genomeID) {
+
+            const cravatChr = chr.startsWith("chr") ? chr : "chr" + chr;
+            return `<a target="_blank" href="https://run.opencravat.org/result/nocache/variant.html` +
+                `?chrom=${cravatChr}&pos=${position}&ref_base=${ref}&alt_base=${alt}"><b>Cravat ${ref}->${alt}</b></a>`
+
+        } else {
+            return undefined
+        }
+    }
+}
+
+function hoverText(clickState) {
+
+    if (!this.hoverTextFields) return
+
+    const features = this.clickedFeatures(clickState);
+
+    if (features && features.length > 0) {
+        let str = "";
+        for (let i = 0; i < features.length; i++) {
+            if (i === 10) {
+                str += "; ...";
+                break
+            }
+            if (!features[i]) continue
+
+            const f = features[i]._f || features[i];
+            if (str.length > 0) str += "\n";
+
+            str = "";
+            for (let field of this.hoverTextFields) {
+                if (str.length > 0) str += "\n";
+                if (f.hasOwnProperty(field)) {
+                    str += f[field];
+                } else if (typeof f.getAttribute === "function") {
+                    str += f.getAttribute(field);
+                }
+            }
+
+        }
+        return str
+    }
+}
+
+/**
+ * Map UCSC track line "type" setting to file format.  In igv.js "type" refers to the track type, not the input file format
+ * @type {Map<string, string>}
+ */
+const UCSCTypeMappings = new Map([
+    ["wiggle_0", "wig"],
+    ["bed", "bed"],
+    ["bigBed", "bigBed"],
+    ["bigWig", "bigWig"]
+]);
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+/**
+ *  Define parser for seg files  (.bed, .gff, .vcf, etc).  A parser should implement 2 methods
+ *
+ *     parseHeader(data) - return an object representing a header.  Details are format specific
+ *
+ *     parseFeatures(data) - return a list of features
+ *
+ */
+
+
+class SegParser {
+
+    constructor(type) {
+        this.type = type || 'seg';   // One of seg, mut, or maf
+
+        switch (this.type) {
+            case 'mut':
+                this.sampleColumn = 3;
+                this.chrColumn = 0;
+                this.startColumn = 1;
+                this.endColumn = 2;
+                this.dataColumn = 4;
+                break
+            case 'maf':
+                this.sampleColumn = 15;
+                this.chrColumn = 4;
+                this.startColumn = 5;
+                this.endColumn = 6;
+                this.dataColumn = 8;
+                break
+            default:
+                this.sampleColumn = 0;
+                this.chrColumn = 1;
+                this.startColumn = 2;
+                this.endColumn = 3;
+            // Data column determined after reading header
+        }
+    }
+
+    async parseHeader(dataWrapper) {
+        let line;
+        while ((line = await dataWrapper.nextLine()) !== undefined) {
+            if (line.startsWith("#")) ; else {
+                const tokens = line.split("\t");
+                this.header = {headings: tokens};
+                break
+            }
+        }
+        return this.header
+    }
+
+    async parseFeatures(dataWrapper) {
+
+        const allFeatures = [];
+        let extraHeaders;
+        if (!this.header) {
+            this.header = await this.parseHeader(dataWrapper);  // This will only work for non-indexed files
+        }
+        if ('seg' === this.type) {
+            this.dataColumn = this.header.headings.length - 1;
+        }
+        if (this.header.headings.length > 5) {
+            extraHeaders = this.extractExtraColumns(this.header.headings);
+        }
+        const valueColumnName = this.header.headings[this.dataColumn];
+
+        let line;
+        while ((line = await dataWrapper.nextLine()) !== undefined) {
+            const tokens = line.split("\t");
+            const value = ('seg' === this.type) ? Number(tokens[this.dataColumn]) : tokens[this.dataColumn];
+            if (tokens.length > this.dataColumn) {
+                const feature = new SegFeature({
+                    sample: tokens[this.sampleColumn],
+                    chr: tokens[this.chrColumn],
+                    start: parseInt(tokens[this.startColumn]) - 1,
+                    end: parseInt(tokens[this.endColumn]),
+                    value,
+                    valueColumnName
+                });
+                if (extraHeaders) {
+                    const extraValues = this.extractExtraColumns(tokens);
+                    feature.setAttributes({names: extraHeaders, values: extraValues});
+                }
+                allFeatures.push(feature);
+            }
+        }
+        return allFeatures
+    }
+
+    extractExtraColumns(tokens) {
+        const extras = [];
+        for (let i = 0; i < tokens.length; i++) {
+            if (i !== this.chrColumn && i !== this.startColumn && i !== this.endColumn && i !== this.sampleColumn) {
+                extras.push(tokens[i]);
+            }
+        }
+        return extras
+    }
+
+}
+
+class SegFeature {
+
+    constructor({sample, chr, start, end, value, valueColumnName}) {
+        this.sample = sample;
+        this.chr = chr;
+        this.start = start;
+        this.end = end;
+        this.value = value;
+        this.valueColumnName = valueColumnName;
+    }
+
+    setAttributes({names, values}) {
+        this.attributeNames = names;
+        this.attributeValues = values;
+    }
+
+    getAttribute(name) {
+        if (this.attributeNames) {
+            const idx = this.attributeNames.indexOf(name);
+            if (idx >= 0) {
+                return this.attributeValues[idx]
+            }
+        }
+        return undefined
+    }
+
+
+    popupData(type, genomeID) {
+        const filteredProperties = new Set(['chr', 'start', 'end', 'sample', 'value', 'row', 'color', 'sampleKey',
+            'uniqueSampleKey', 'sampleId', 'chromosome', 'uniquePatientKey']);
+        const locationString = (this.chr + ":" +
+            numberFormatter$1(this.start + 1) + "-" +
+            numberFormatter$1(this.end));
+        const pd = [
+            {name: "Sample", value: this.sample},
+            {name: "Location", value: locationString},
+            {name: this.valueColumnName ? capitalize(this.valueColumnName) : "Value", value: this.value}
+        ];
+
+        // TODO -- the Cravat stuff should probably be in the track (SegTrack)
+        if ("mut" === type && "hg38" === genomeID) {
+            const l = this.extractCravatLink(genomeID);
+            if (l) {
+                pd.push('<hr/>');
+                pd.push({html: l});
+                pd.push('<hr/>');
+            }
+        }
+
+        if (this.attributeNames && this.attributeNames.length > 0) {
+            for (let i = 0; i < this.attributeNames.length; i++) {
+                if (!filteredProperties.has(this.attributeNames[i]) & this.valueColumnName !== this.attributeNames[i]) {
+                    pd.push({name: capitalize(this.attributeNames[i]), value: this.attributeValues[i]});
+                }
+            }
+        }
+        return pd
+    }
+
+    extractCravatLink(genomeId) {
+
+        let ref, alt;
+        if (this.attributeNames && this.attributeNames.length > 0) {
+            for (let i = 0; i < this.attributeNames.length; i++) {
+                if (!ref && "Reference_Allele" === this.attributeNames[i]) {
+                    ref = this.attributeValues[i];
+                }
+                if (!alt && this.attributeNames[i].startsWith("Tumor_Seq_Allele") && this.attributeValues[i] !== ref) {
+                    alt = this.attributeValues[i];
+                }
+                if (ref && alt) {
+                    return TrackBase.getCravatLink(this.chr, this.start + 1, ref, alt, genomeId)
+                }
+            }
+        }
+
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * Create a variant from an array of tokens representing a line in a "VCF" file
+ * @param tokens
+ */
+function createVCFVariant(tokens) {
+    const variant = new Variant();
+    variant.chr = tokens[0]; // TODO -- use genome aliases
+    variant.pos = parseInt(tokens[1]);
+    variant.names = tokens[2];    // id in VCF
+    variant.referenceBases = tokens[3];
+    variant.alternateBases = tokens[4];
+    variant.quality = tokens[5];
+    variant.filter = tokens[6];
+    variant.info = {};
+    const infoStr = tokens[7];
+    if (infoStr) {
+        for (let elem of infoStr.split(';')) {
+            var element = elem.split('=');
+            variant.info[element[0]] = element[1];
+        }
+    }
+    variant.init();
+    return variant
+}
+
+
+/**
+ * @deprecated - the GA4GH API has been deprecated.  This code no longer maintained.
+ * @param json
+ * @returns {Variant}
+ */
+function createGAVariant(json) {
+
+    var variant = new Variant();
+
+    variant.chr = json.referenceName;
+    variant.start = parseInt(json.start);  // Might get overriden below
+    variant.end = parseInt(json.end);      // Might get overriden below
+    variant.pos = variant.start + 1;       // GA4GH is 0 based.
+    variant.names = arrayToString(json.names, "; ");
+    variant.referenceBases = json.referenceBases;
+    variant.alternateBases = arrayToString(json.alternateBases);
+    variant.quality = json.quality;
+    variant.filter = arrayToString(json.filter);
+
+
+    // Flatten GA4GH attributes array
+    variant.info = {};
+    if (json.info) {
+        Object.keys(json.info).forEach(function (key) {
+            var value,
+                valueArray = json.info[key];
+
+            if (Array.isArray(valueArray)) {
+                value = valueArray.join(",");
+            } else {
+                value = valueArray;
+            }
+            variant.info[key] = value;
+        });
+    }
+
+
+    // Need to build a hash of calls for fast lookup
+    // Note from the GA4GH spec on call ID:
+    //
+    // The ID of the call set this variant call belongs to. If this field is not present,
+    // the ordering of the call sets from a SearchCallSetsRequest over this GAVariantSet
+    // is guaranteed to match the ordering of the calls on this GAVariant.
+    // The number of results will also be the same.
+    variant.calls = {};
+    var id;
+    if (json.calls) {
+        json.calls.forEach(function (call) {
+            id = call.callSetId;
+            variant.calls[id] = call;
+
+        });
+    }
+
+    init(variant);
+
+    return variant
+
+}
+
+
+class Variant {
+
+    init() {
+
+        const ref = this.referenceBases;
+        const altBases = this.alternateBases;
+
+        if (this.info) {
+            if (this.info["VT"]) {
+                this.type = this.info["VT"];
+            } else if (this.info["SVTYPE"]) {
+                this.type = "SV";
+            } else if (this.info["PERIOD"]) {
+                this.type = "STR";
+            }
+        }
+        if (this.type === undefined) {
+            this.type = determineType(ref, altBases);
+        }
+        if (this.type === "NONVARIANT") {
+            this.heterozygosity = 0;
+        }
+
+        // Determine start/end coordinates -- these are the coordinates representing the actual variant,
+        // not the leading or trailing reference
+        if (this.info["END"]) {
+            this.start = this.pos - 1;
+            if (this.info["CHR2"] && this.info["CHR2"] !== this.chr) {
+                this.end = this.start + 1;
+            } else {
+                this.end = Number.parseInt(this.info["END"]);
+            }
+        } else {
+            if (this.type === "NONVARIANT") {
+                this.start = this.pos - 1;      // convert to 0-based coordinate convention
+                this.end = this.start + ref.length;
+            } else {
+
+                const altTokens = altBases.split(",").filter(token => token.length > 0);
+                this.alleles = [];
+                this.start = undefined;
+                this.end = undefined;
+
+                for (let alt of altTokens) {
+
+                    this.alleles.push(alt);
+
+                    // We don't yet handle  SV and other special alt representations
+                    if ("SV" !== this.type && isKnownAlt(alt)) {
+
+                        let altLength = alt.length;
+                        let lengthOnRef = ref.length;
+                        const lmin = Math.min(altLength, lengthOnRef);
+
+                        // Trim off matching bases.  Try first match, then right -> left,  then any remaining left -> right
+                        let s = 0;
+
+                        while (s < lmin && (ref.charCodeAt(s) === alt.charCodeAt(s))) {
+                            s++;
+                            altLength--;
+                            lengthOnRef--;
+                        }
+
+                        // right -> left from end
+                        while (altLength > 0 && lengthOnRef > 0) {
+                            const altIdx = s + altLength - 1;
+                            const refIdx = s + lengthOnRef - 1;
+                            if (alt.charCodeAt(altIdx) === ref.charCodeAt(refIdx)) {
+                                altLength--;
+                                lengthOnRef--;
+                            } else {
+                                break
+                            }
+                        }
+
+                        // if any remaining, left -> right
+                        while (altLength > 0 && lengthOnRef > 0) {
+                            const altIdx = s;
+                            const refIdx = s;
+                            if (alt.charCodeAt(altIdx) === ref.charCodeAt(refIdx)) {
+                                s++;
+                                altLength--;
+                                lengthOnRef--;
+                            } else {
+                                break
+                            }
+                        }
+
+                        const alleleStart = this.pos + s - 1;      // -1 for zero based coordinates
+                        const alleleEnd = alleleStart + lengthOnRef;
+                        this.start = this.start === undefined ? alleleStart : Math.min(this.start, alleleStart);
+                        this.end = this.end === undefined ? alleleEnd : Math.max(this.end, alleleEnd);
+                    }
+                }
+
+                // Default to single base representation @ position for variant types not otherwise handled
+                if (this.start === undefined) {
+                    this.start = this.pos - 1;
+                    this.end = this.pos;
+                }
+            }
+        }
+    }
+
+    popupData(genomicLocation, genomeId) {
+
+        const posString = `${numberFormatter$1(this.pos)}`;
+        const locString = this.start === this.end ?
+            `${numberFormatter$1(this.start)} | ${numberFormatter$1(this.start + 1)}` :
+            `${numberFormatter$1(this.start + 1)}-${numberFormatter$1(this.end)}`;
+        const fields = [
+            {name: "Chr", value: this.chr},
+            {name: "Pos", value: posString},
+            {name: "Loc", value: locString},
+            {name: "ID", value: this.names ? this.names : ""},
+            {name: "Ref", value: this.referenceBases},
+            {name: "Alt", value: this.alternateBases.replace("<", "&lt;")},
+            {name: "Qual", value: this.quality},
+            {name: "Filter", value: this.filter}
+        ];
+
+        if ("SNP" === this.type) {
+            let ref = this.referenceBases;
+            if (ref.length === 1) {
+                let altArray = this.alternateBases.split(",");
+                for (let alt of altArray) {
+                    if (alt.length === 1) {
+                        let l = TrackBase.getCravatLink(this.chr, this.pos, ref, alt, genomeId);
+                        if (l) {
+                            fields.push('<hr/>');
+                            fields.push({html: l});
+                        }
+                    }
+                }
+            }
+        }
+
+        if (this.hasOwnProperty("heterozygosity")) {
+            fields.push({name: "Heterozygosity", value: this.heterozygosity});
+        }
+
+        if (this.info) {
+            fields.push({html: '<hr style="border-top: dotted 1px;border-color: #c9c3ba" />'});
+            for (let key of Object.keys(this.info)) {
+                fields.push({name: key, value: arrayToString(decodeURIComponent(this.info[key]))});
+            }
+        }
+
+        return fields
+    }
+
+    getInfo(tag) {
+        return this.info ? this.info[tag] : undefined;
+    }
+
+    isRefBlock() {
+        return "NONVARIANT" === this.type
+    }
+
+}
+
+const knownAltBases = new Set(["A", "C", "T", "G"].map(c => c.charCodeAt(0)));
+
+function isKnownAlt(alt) {
+    for (let i = 0; i < alt.length; i++) {
+        if (!knownAltBases.has(alt.charCodeAt(i))) {
+            return false
+        }
+    }
+    return true
+}
+
+
+function determineType(ref, altAlleles) {
+    const refLength = ref.length;
+    if (altAlleles === undefined) {
+        return "UNKNOWN"
+    } else if (altAlleles.trim().length === 0 ||
+        altAlleles === "<NON_REF>" ||
+        altAlleles === "<*>" ||
+        altAlleles === ".") {
+        return "NONVARIANT"
+    } else {
+        const alleles = altAlleles.split(",");
+        const types = alleles.map(function (a) {
+            if (refLength === 1 && a.length === 1) {
+                return "SNP"
+            } else {
+                return "<NON_REF>" === a ? "NONVARIANT" : "OTHER"
+            }
+        });
+        let type = types[0];
+        for (let t of types) {
+            if (t !== type) {
+                return "MIXED"
+            }
+        }
+        return type
+    }
+}
+
+function arrayToString(value, delim) {
+
+    if (delim === undefined) delim = ",";
+
+    if (!(Array.isArray(value))) {
+        return value
+    }
+    return value.join(delim)
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * Parser for VCF files.
+ */
+
+class VcfParser {
+
+    construtor() {
+    }
+
+    async parseHeader(dataWrapper, genome) {
+
+        const header = {};
+
+        header.chrAliasTable = new Map();
+
+        // First line must be file format
+        let line = await dataWrapper.nextLine();
+        if (line.startsWith("##fileformat")) {
+            header.version = line.substr(13);
+        } else {
+            throw new Error("Invalid VCF file: missing fileformat line")
+        }
+
+        while ((line = await dataWrapper.nextLine()) !== undefined) {
+
+            if (line.startsWith("#")) {
+
+                let id;
+                const values = {};
+
+                if (line.startsWith("##")) {
+
+                    if (line.startsWith("##INFO") || line.startsWith("##FILTER") || line.startsWith("##FORMAT")) {
+
+                        const ltIdx = line.indexOf("<");
+                        const gtIdx = line.lastIndexOf(">");
+
+                        if (!(ltIdx > 2 && gtIdx > 0)) {
+                            console.log("Malformed VCF header line: " + line);
+                            continue
+                        }
+
+                        const type = line.substring(2, ltIdx - 1);
+                        if (!header[type]) header[type] = {};
+
+                        //##INFO=<ID=AF,Number=A,Type=Float,Description="Allele frequency based on Flow Evaluator observation counts">
+                        // ##FILTER=<ID=NOCALL,Description="Generic filter. Filtering details stored in FR info tag.">
+                        // ##FORMAT=<ID=AF,Number=A,Type=Float,Description="Allele frequency based on Flow Evaluator observation counts">
+
+                        const tokens = splitStringRespectingQuotes(line.substring(ltIdx + 1, gtIdx - 1), ",");
+
+                        for (let token of tokens) {
+                            var kv = token.split("=");
+                            if (kv.length > 1) {
+                                if (kv[0] === "ID") {
+                                    id = kv[1];
+                                } else {
+                                    values[kv[0]] = kv[1];
+                                }
+                            }
+                        }
+
+                        if (id) {
+                            header[type][id] = values;
+                        }
+                    } else if (line.startsWith("##contig") && genome) {
+                        const idx1 = line.indexOf("<ID=");
+                        let idx2 = line.indexOf(",", idx1);
+                        if (idx2 == -1) {
+                            idx2 = line.indexOf(">", idx1);
+                        }
+                        const chr = line.substring(idx1 + 4, idx2);
+                        const canonicalChromosome = genome.getChromosomeName(chr);
+                        header.chrAliasTable.set(canonicalChromosome, chr);
+                    } else ;
+                } else if (line.startsWith("#CHROM")) {
+                    const tokens = line.split("\t");
+
+                    if (tokens.length > 8) {
+
+                        // call set names -- use column index for id
+                        header.callSets = [];
+                        for (let j = 9; j < tokens.length; j++) {
+                            header.callSets.push({id: j, name: tokens[j]});
+                        }
+                    }
+                }
+
+            } else {
+                break
+            }
+
+        }
+
+        this.header = header;  // Will need to intrepret genotypes and info field
+
+        return header
+    }
+
+
+    /**
+     * Parse data as a collection of Variant objects.
+     *
+     * @param data
+     * @returns {Array}
+     */
+    async parseFeatures(dataWrapper) {
+
+        const allFeatures = [];
+        const callSets = this.header.callSets;
+        const nExpectedColumns = 8 + (callSets ? callSets.length + 1 : 0);
+        let line;
+        while ((line = await dataWrapper.nextLine()) !== undefined) {
+            if (line && !line.startsWith("#")) {
+
+                const tokens = line.split("\t");
+                if (tokens.length === nExpectedColumns) {
+                    const variant = createVCFVariant(tokens);
+                    variant.header = this.header;       // Keep a pointer to the header to interpret fields for popup text
+                    //variant.line = line              // Uncomment for debugging
+                    allFeatures.push(variant);
+
+                    if (tokens.length > 9) {
+
+                        // Format
+                        const callFields = extractCallFields(tokens[8].split(":"));
+
+                        variant.calls = {};
+                        for (let index = 9; index < tokens.length; index++) {
+
+                            const token = tokens[index];
+
+                            const callSet = callSets[index - 9];
+                            const call = {
+                                callSetName: callSet.name,
+                                info: {}
+                            };
+
+                            variant.calls[callSet.id] = call;
+
+                            token.split(":").forEach(function (callToken, idx) {
+
+                                switch (idx) {
+                                    case callFields.genotypeIndex:
+                                        call.genotype = [];
+                                        callToken.split(/[\|\/]/).forEach(function (s) {
+                                            call.genotype.push('.' === s ? s : parseInt(s));
+                                        });
+                                        break
+
+                                    default:
+                                        call.info[callFields.fields[idx]] = callToken;
+                                }
+                            });
+                        }
+                    }
+
+                    // If this is a structural variant create a complement of this variant for the other end
+                    // The test for "SV" is not comprehensive, there is not yet a standard for this
+                    if (variant.info && variant.info.CHR2 && variant.info.END) {
+                        allFeatures.push(svComplement(variant));
+                    }
+                }
+            }
+        }
+
+        return allFeatures
+    }
+}
+
+function extractCallFields(tokens) {
+
+    const callFields = {
+        genotypeIndex: -1,
+        fields: tokens
+    };
+    for (let i = 0; i < tokens.length; i++) {
+        if ("GT" === tokens[i]) {
+            callFields.genotypeIndex = i;
+        }
+    }
+    return callFields
+}
+
+function svComplement(v) {
+
+    const chr2 = v.info.CHR2;
+    const pos2 = Number.parseInt(v.info.END);
+    return {
+        chr: chr2,
+        start: pos2 - 1,
+        end: pos2,
+        _f: v
+    }
+
+}
+
+/**
+ * Parser for IGV desktop GWAS files.  See http://software.broadinstitute.org/software/igv/GWAS
+ */
+class GWASParser {
+
+    constructor(config) {
+        // Defaults - can be overriden by header
+        this.config = config;
+        if (config.columns) {
+            if (config.columns.chromosome === undefined ||
+                config.columns.position === undefined ||
+                config.columns.value === undefined) {
+                throw Error("columns property must define chrCol, posCol, and valueCol")
+            }
+            this.posCol = config.columns.position - 1;
+            this.chrCol = config.columns.chromosome - 1;
+            this.valueCol = config.columns.value - 1;
+        } else {
+            // Defaults -- can be overriden in header
+            this.posCol = 2;
+            this.chrCol = 1;
+            this.valueCol = 3;
+        }
+    }
+
+    async parseHeader(dataWrapper) {
+        const headerLine = await dataWrapper.nextLine();
+        return this.parseHeaderLine(headerLine)
+    }
+
+    parseHeaderLine(headerLine) {
+        this.columns = headerLine.split(/\t/);
+        if (!this.config.columns) {
+            for (let i = 0; i < this.columns.length; i++) {
+                const c = this.columns[i].toLowerCase();
+                switch (c) {
+                    case 'chr':
+                    case 'chromosome':
+                    case 'chr_id':
+                        this.chrCol = i;
+                        break
+                    case 'bp':
+                    case 'pos':
+                    case 'position':
+                    case 'chr_pos':
+                        this.posCol = i;
+                        break
+                    case 'p':
+                    case 'pval':
+                    case 'pvalue':
+                    case 'p-value':
+                    case 'p.value':
+                        this.valueCol = i;
+                        break
+                }
+            }
+        }
+        return this.columns
+    }
+
+    async parseFeatures(dataWrapper) {
+
+        const allFeatures = [];
+        const headerLine = dataWrapper.nextLine();
+        if (!this.columns) {
+            this.parseHeaderLine(headerLine);
+        }
+        let line;
+        while ((line = dataWrapper.nextLine()) !== undefined) {
+            const tokens = line.split(/\t/);
+            if (tokens.length === this.columns.length) {
+                const chr = tokens[this.chrCol];
+                const start = parseInt(tokens[this.posCol]) - 1;
+                const end = start + 1;
+                const value = Number(tokens[this.valueCol]);
+                allFeatures.push(new GWASFeature({
+                    chr: chr,
+                    start: start,
+                    end: end,
+                    value: value,
+                    line: line,
+                    columns: this.columns
+                }));
+            }
+        }
+        return allFeatures
+    }
+}
+
+class GWASFeature {
+
+    constructor({chr, start, end, value, line, columns}) {
+        this.chr = chr;
+        this.start = start;
+        this.end = end;
+        this.value = value;
+        this.line = line;
+        this.columns = columns;
+    }
+
+    popupData() {
+        const tokens = this.line.split(/\t/);
+        return this.columns.map(function (c, index) {
+            return {name: c, value: tokens[index]}
+        })
+    }
+
+    getAttribute(attrName) {
+        const tokens = this.line.split(/\t/);
+        for (let i = 0; i < this.columns.length; i++) {
+            if (this.columns[i] === attrName) {
+                return tokens[i]
+            }
+        }
+        return undefined
+    }
+
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ *  Define parsers for bed-like files  (.bed, .gff, .vcf, etc).  A parser should implement 2 methods
+ *
+ *     parseHeader(data) - return an object representing a header or metadata.  Details are format specific
+ *
+ *     parseFeatures(data) - return an array of features
+ *
+ */
+
+var aedRegexpNoNamespace = new RegExp("([^:]*)\\(([^)]*)\\)"); // name(type) for AED parsing (namespace undefined)
+var aedRegexpNamespace = new RegExp("([^:]*):([^(]*)\\(([^)]*)\\)"); // namespace:name(type) for AED parsing
+
+
+class AEDParser {
+
+    constructor(config) {
+        const decode = config ? config.decode : undefined;
+        this.nameField = config ? config.nameField : undefined;
+        this.skipRows = 0;   // The number of fixed header rows to skip.  Override for specific types as needed
+        if (decode) {
+            this.decode = decode;
+        } else {
+            this.decode = decodeAed;
+        }
+        this.delimiter = "\t";
+    }
+
+    async parseHeader(dataWrapper) {
+        let line;
+        let header;
+        while (line = await dataWrapper.nextLine()) {
+            if (line.startsWith("track") || line.startsWith("#") || line.startsWith("browser")) {
+                if (line.startsWith("track") || line.startsWith("#track")) {
+                    let h = parseTrackLine(line);
+                    if (header) {
+                        Object.assign(header, h);
+                    } else {
+                        header = h;
+                    }
+                } else if (line.startsWith("#columns")) {
+                    let h = parseColumnsDirective(line);
+                    if (header) {
+                        Object.assign(header, h);
+                    } else {
+                        header = h;
+                    }
+                } else if (line.startsWith("##gff-version 3")) {
+                    this.format = "gff3";
+                    if (!header) header = {};
+                    header["format"] = "gff3";
+                }
+            } else {
+                break
+            }
+        }
+        this.header = header;    // Directives might be needed for parsing lines
+        return header
+    }
+
+    async parseFeatures(dataWrapper) {
+
+        const allFeatures = [];
+        const decode = this.decode;
+        const delimiter = this.delimiter || "\t";
+        let i = 0;
+        let line;
+        let wig;
+
+        while ((line = dataWrapper.nextLine()) !== undefined) {
+            i++;
+            if (i <= this.skipRows || line.startsWith("track") || line.startsWith("#") || line.startsWith("browser")) {
+                continue
+            }
+
+            let tokens = readTokensAed();
+            if (tokens.length < 1) {
+                continue
+            }
+
+            if (!this.aed) {
+                // Store information about the aed header in the parser itself
+                // This is done only once - on the first row
+                this.aed = parseAedHeaderRow(tokens);
+                continue
+            }
+
+            const feature = decode.call(this, tokens, wig);
+            if (feature) {
+                allFeatures.push(feature);
+            }
+        }
+
+        return allFeatures
+
+        // Double quoted strings can contain newlines in AED
+        // "" is an escape for a ".
+        // Parse all this, clean it up, split into tokens in a custom way
+        function readTokensAed() {
+            var tokens = [],
+                token = "",
+                quotedString = false,
+                n,
+                c;
+
+            while (line || line === '') {
+                for (n = 0; n < line.length; n++) {
+                    c = line.charAt(n);
+                    if (c === delimiter) {
+                        if (!quotedString) {
+                            tokens.push(token);
+                            token = "";
+                        } else {
+                            token += c;
+                        }
+                    } else if (c === "\"") {
+                        // Look ahead to the next character
+                        if (n + 1 < line.length && line.charAt(n + 1) === "\"") {
+                            if (quotedString) {
+                                // Turn "" into a single " in the output string
+                                token += "\"";
+                            }
+                            // Skip the next double quote
+                            n++;
+                        } else {
+                            // We know the next character is NOT a double quote, flip our state
+                            quotedString = !quotedString;
+                        }
+                    } else {
+                        token += c;
+                    }
+                }
+                // We are at the end of the line
+                if (quotedString) {
+                    token += '\n'; // Add newline to the token
+                    line = nextLine(); // Keep going
+                } else {
+                    // We can end the loop
+                    break
+                }
+            }
+            // Push the last token
+            tokens.push(token);
+            return tokens
+        }
+    }
+}
+
+
+function parseAedToken(value) {
+    // Example: refseq:accessionNumber(aed:String)
+    // refseq - namespace, will be declared later
+    // accessionNumber - name of the field
+    // aed:String - type of the field
+    // The namespace part may be missing
+    var match = aedRegexpNamespace.exec(value);
+    if (match) {
+        return {
+            namespace: match[1],
+            name: match[2],
+            type: match[3]
+        }
+    }
+
+    match = aedRegexpNoNamespace.exec(value);
+    if (match) {
+        return {
+            namespace: '?',
+            name: match[1],
+            type: match[2]
+        }
+    } else {
+        throw new Error("Error parsing the header row of AED file - column not in ns:name(ns:type) format")
+    }
+}
+
+function parseAedHeaderRow(tokens) {
+    // First row of AED file defines column names
+    // Each header item is an aed token - see parseAedToken
+    var aed,
+        k,
+        token,
+        aedToken;
+
+    // Initialize aed section to be filled in
+    aed = {
+        columns: [ // Information about the namespace, name and type of each column
+            // Example entry:
+            // { namespace: 'bio', name: 'start', type: 'aed:Integer' }
+        ],
+        metadata: { // Metadata about the entire AED file
+            // Example:
+            // {
+            //    aed: {
+            //       application: { value: "CHaS Browser 3.3.0.139 (r10838)", type: "aed:String" },
+            //       created: { value: "2018-01-02T10:20:30.123+01:00", type: "aed:DateTime" },
+            //       modified: { value: "2018-03-04T11:22:33.456+01:00", type: "aed:DateTime" },
+            //    }
+            //    affx: {
+            //       ucscGenomeVersion: { value: "hg19", type: "aed:String" }
+            //    },
+            //    namespace: {
+            //       omim: { value: "http://affymetrix.com/ontology/www.ncbi.nlm.nih.gov/omim/", type: "aed:URI" },
+            //       affx: { value: "http://affymetrix.com/ontology/", type: "aed:URI" },
+            //       refseq: { value: "http://affymetrix.com/ontology/www.ncbi.nlm.nih.gov/RefSeq/", type: "aed:URI" }
+            //    }
+            // }
+        }
+    };
+    for (k = 0; k < tokens.length; k++) {
+        token = tokens[k];
+        aedToken = parseAedToken(token);
+        aed.columns.push(aedToken);
+    }
+
+    return aed
+}
+
+function parseTrackLine(line) {
+
+    const properties = {};
+    const tokens = line.split(/(?:")([^"]+)(?:")|([^\s"]+)(?=\s+|$)/g);
+
+
+    // Clean up tokens array
+    let curr;
+    const tmp = [];
+    for (let tk of tokens) {
+        if (!tk || tk.trim().length === 0) continue
+        if (tk.endsWith("=") > 0) {
+            curr = tk;
+        } else if (curr) {
+            tmp.push(curr + tk);
+            curr = undefined;
+        } else {
+            tmp.push(tk);
+        }
+    }
+    for (let str of tmp) {
+        if (!str) return
+        var kv = str.split('=', 2);
+        if (kv.length === 2) {
+            const key = kv[0].trim();
+            const value = kv[1].trim();
+            properties[key] = value;
+        }
+
+    }
+
+    return properties
+}
+
+function parseColumnsDirective(line) {
+
+    let properties = {};
+    let t1 = line.split(/\s+/);
+
+    if (t1.length === 2) {
+
+        let t2 = t1[1].split(";");
+
+        t2.forEach(function (keyValue) {
+
+            let t = keyValue.split("=");
+
+            if (t[0] === "color") {
+                properties.colorColumn = Number.parseInt(t[1]) - 1;
+            } else if (t[0] === "thickness") {
+                properties.thicknessColumn = Number.parseInt(t[1]) - 1;
+            }
+        });
+    }
+
+    return properties
+}
+
+/**
+ * AED file feature.
+ *
+ * @param aed link to the AED file object containing file-level metadata and column descriptors
+ * @param allColumns All columns as parsed from the AED
+ *
+ * Other values are parsed one by one
+ */
+function AedFeature(aed, allColumns) {
+    var token, aedColumn, aedColumns = aed.columns;
+
+    // Link to AED file (for metadata)
+    this.aed = aed;
+
+    // Unparsed columns from AED file
+    this.allColumns = allColumns;
+
+    // Prepare space for the parsed values
+    this.chr = null;
+    this.start = null;
+    this.end = null;
+    this.score = 1000;
+    this.strand = '.';
+    this.cdStart = null;
+    this.cdEnd = null;
+    this.name = null;
+    this.color = null;
+
+    for (let i = 0; i < allColumns.length; i++) {
+        token = allColumns[i];
+        if (!token) {
+            // Skip empty fields
+            continue
+        }
+        aedColumn = aedColumns[i];
+        if (aedColumn.type === 'aed:Integer') {
+            token = parseInt(token);
+        }
+        var arr = [];
+        if (aedColumn.namespace.length > 0) {
+            for (let j = 0; j < aedColumn.namespace.length; j++) {
+                arr.push(aedColumn.namespace.charCodeAt(j));
+            }
+        }
+        if (aedColumn.namespace.trim() === 'bio') {
+            if (aedColumn.name === 'sequence') {
+                this.chr = token;
+            } else if (aedColumn.name === 'start') {
+                this.start = token;
+            } else if (aedColumn.name === 'end') {
+                this.end = token;
+            } else if (aedColumn.name === 'cdsMin') {
+                this.cdStart = token;
+            } else if (aedColumn.name === 'cdsMax') {
+                this.cdEnd = token;
+            } else if (aedColumn.name === 'strand') {
+                this.strand = token;
+            }
+        } else if (aedColumn.namespace === 'aed') {
+            if (aedColumn.name === 'name') {
+                this.name = token;
+            }
+        } else if (aedColumn.namespace === 'style') {
+            if (aedColumn.name === 'color') {
+                this.color = IGVColor.createColorString(token);
+            }
+        }
+    }
+}
+
+AedFeature.prototype.popupData = function () {
+    var data = [],
+        aed = this.aed;
+    // Just dump everything we have for now
+    for (var i = 0; i < this.allColumns.length; i++) {
+        var featureValue = this.allColumns[i];
+        var name = aed.columns[i].name;
+        // Skip columns that are not interesting - you know the sequence, and you can see color
+        if (name !== 'sequence' && name !== 'color') {
+            if (featureValue) {
+                data.push({name: name, value: featureValue});
+            }
+        }
+    }
+    return data
+};
+
+/**
+ * Decode the AED file format
+ * @param tokens
+ * @param ignore
+ * @returns decoded feature, or null if this is not a valid record
+ */
+function decodeAed(tokens, ignore) {
+    var name, value, token,
+        nonEmptyTokens = 0,
+        aedColumns = this.aed.columns,
+        aedColumn,
+        aedKey,
+        i;
+
+    // Each aed row must match the exact number of columns or we skip it
+    if (tokens.length !== aedColumns.length) {
+        console.log('Corrupted AED file row: ' + tokens.join(','));
+        return undefined
+    }
+
+    for (i = 0; i < tokens.length; i++) {
+        aedColumn = aedColumns[i];
+        token = tokens[i];
+        if (token !== '') {
+            nonEmptyTokens++;
+        }
+        if (aedColumn.name === 'name' && aedColumn.namespace === 'aed') {
+            name = token;
+        } else if (aedColumn.name === 'value' && aedColumn.namespace === 'aed') {
+            value = token;
+        }
+    }
+
+    if (nonEmptyTokens === 2 && name && value) {
+        // Special row that defines metadata for the entire file
+        aedKey = parseAedToken(name);
+        // Store in the metadata section
+        if (!this.aed.metadata[aedKey.namespace]) {
+            this.aed.metadata[aedKey.namespace] = {};
+        }
+        if (!this.aed.metadata[aedKey.namespace][aedKey.name]) {
+            this.aed.metadata[aedKey.namespace][aedKey.name] = {
+                type: aedKey.type,
+                value: value
+            };
+        }
+        // Ignore this value
+        return undefined
+    }
+
+    var feature = new AedFeature(this.aed, tokens);
+
+    if (!feature.chr || (!feature.start && feature.start !== 0) || !feature.end) {
+        console.log('Cannot parse feature: ' + tokens.join(','));
+        return undefined
+    }
+
+    return feature
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+// TODO -- big endian?
+
+class BinaryParser {
+    constructor(dataView, littleEndian) {
+
+        this.littleEndian = littleEndian !== undefined ? littleEndian : true;
+        this.position = 0;
+        this.view = dataView;
+        this.length = dataView.byteLength;
+    }
+
+    available() {
+        return this.length - this.position
+    }
+
+    remLength() {
+        return this.length - this.position
+    }
+
+    hasNext() {
+        return this.position < this.length - 1
+    }
+
+    getByte() {
+        var retValue = this.view.getUint8(this.position, this.littleEndian);
+        this.position++;
+        return retValue
+    }
+
+    getShort() {
+
+        var retValue = this.view.getInt16(this.position, this.littleEndian);
+        this.position += 2;
+        return retValue
+    }
+
+    getUShort() {
+
+        // var byte1 = this.getByte(),
+        //     byte2 = this.getByte(),
+        //     retValue = ((byte2 << 24 >>> 16) + (byte1 << 24 >>> 24));
+        //     return retValue;
+
+        //
+        var retValue = this.view.getUint16(this.position, this.littleEndian);
+        this.position += 2;
+        return retValue
+    }
+
+
+    getInt() {
+
+        var retValue = this.view.getInt32(this.position, this.littleEndian);
+        this.position += 4;
+        return retValue
+    }
+
+
+    getUInt() {
+        var retValue = this.view.getUint32(this.position, this.littleEndian);
+        this.position += 4;
+        return retValue
+    }
+
+    getLong() {
+
+        // DataView doesn't support long. So we'll try manually
+
+        var b = [];
+        b[0] = this.view.getUint8(this.position);
+        b[1] = this.view.getUint8(this.position + 1);
+        b[2] = this.view.getUint8(this.position + 2);
+        b[3] = this.view.getUint8(this.position + 3);
+        b[4] = this.view.getUint8(this.position + 4);
+        b[5] = this.view.getUint8(this.position + 5);
+        b[6] = this.view.getUint8(this.position + 6);
+        b[7] = this.view.getUint8(this.position + 7);
+
+        var value = 0;
+        if (this.littleEndian) {
+            for (let i = b.length - 1; i >= 0; i--) {
+                value = (value * 256) + b[i];
+            }
+        } else {
+            for (let i = 0; i < b.length; i++) {
+                value = (value * 256) + b[i];
+            }
+        }
+
+
+        this.position += 8;
+        return value
+    }
+
+    getString(len) {
+
+        var s = "";
+        var c;
+        while ((c = this.view.getUint8(this.position++)) !== 0) {
+            s += String.fromCharCode(c);
+            if (len && s.length === len) break
+        }
+        return s
+    }
+
+    getFixedLengthString(len) {
+
+        var s = "";
+        var i;
+        var c;
+        for (i = 0; i < len; i++) {
+            c = this.view.getUint8(this.position++);
+            if (c > 0) {
+                s += String.fromCharCode(c);
+            }
+        }
+        return s
+    }
+
+    getFixedLengthTrimmedString(len) {
+
+        var s = "";
+        var i;
+        var c;
+        for (i = 0; i < len; i++) {
+            c = this.view.getUint8(this.position++);
+            if (c > 32) {
+                s += String.fromCharCode(c);
+            }
+        }
+        return s
+    }
+
+    getFloat() {
+
+        var retValue = this.view.getFloat32(this.position, this.littleEndian);
+        this.position += 4;
+        return retValue
+
+
+    }
+
+    getDouble() {
+
+        var retValue = this.view.getFloat64(this.position, this.littleEndian);
+        this.position += 8;
+        return retValue
+    }
+
+    skip(n) {
+
+        this.position += n;
+        return this.position
+    }
+
+
+    /**
+     * Return a BGZip (bam and tabix) virtual pointer
+     * TODO -- why isn't 8th byte used ?
+     * @returns {*}
+     */
+    getVPointer() {
+
+        var position = this.position,
+            offset = (this.view.getUint8(position + 1) << 8) | (this.view.getUint8(position)),
+            byte6 = ((this.view.getUint8(position + 6) & 0xff) * 0x100000000),
+            byte5 = ((this.view.getUint8(position + 5) & 0xff) * 0x1000000),
+            byte4 = ((this.view.getUint8(position + 4) & 0xff) * 0x10000),
+            byte3 = ((this.view.getUint8(position + 3) & 0xff) * 0x100),
+            byte2 = ((this.view.getUint8(position + 2) & 0xff)),
+            block = byte6 + byte5 + byte4 + byte3 + byte2;
+        this.position += 8;
+
+        //       if (block == 0 && offset == 0) {
+        //           return null;
+        //       } else {
+        return new VPointer(block, offset)
+        //       }
+    }
+}
+
+class VPointer {
+    constructor(block, offset) {
+        this.block = block;
+        this.offset = offset;
+    }
+
+    isLessThan(vp) {
+        return this.block < vp.block ||
+            (this.block === vp.block && this.offset < vp.offset)
+    }
+
+    isGreaterThan(vp) {
+        return this.block > vp.block ||
+            (this.block === vp.block && this.offset > vp.offset)
+    }
+
+    isEqualTo(vp) {
+        return this.block === vp.block && this.offset === vp.offset
+    }
+
+    print() {
+        return "" + this.block + ":" + this.offset
+    }
+}
+
+function optimizeChunks(chunks, lowest) {
+
+    if (chunks.length === 0) return chunks
+
+    chunks.sort(function (c0, c1) {
+
+        const dif = c0.minv.block - c1.minv.block;
+        if (dif !== 0) {
+            return dif
+        } else {
+            return c0.minv.offset - c1.minv.offset
+        }
+    });
+
+    if(chunks.length <= 1) {
+        return chunks
+    }
+
+    // console.log("Before trimming " + chunks.length)
+    // for (let c of chunks) {
+    //     console.log(`${c.minv.block} ${c.minv.offset}  -  ${c.maxv.block} ${c.maxv.offset}`)
+    // }
+
+    if (lowest) {
+        chunks = chunks.filter(c => c.maxv.isGreaterThan(lowest));
+    }
+
+    // console.log("Before merging " + chunks.length)
+    // for (let c of chunks) {
+    //     console.log(`${c.minv.block} ${c.minv.offset}  -  ${c.maxv.block} ${c.maxv.offset}`)
+    // }
+
+    const mergedChunks = [];
+    let lastChunk;
+    for (let chunk of chunks) {
+
+        if (!lastChunk) {
+            mergedChunks.push(chunk);
+            lastChunk = chunk;
+        } else {
+            if (canMerge(lastChunk, chunk)) {
+                if (chunk.maxv.isGreaterThan(lastChunk.maxv)) {
+                    lastChunk.maxv = chunk.maxv;
+                }
+            } else {
+                mergedChunks.push(chunk);
+                lastChunk = chunk;
+            }
+        }
+    }
+
+    // console.log("After merging " + mergedChunks.length)
+    // for (let c of mergedChunks) {
+    //     console.log(`${c.minv.block} ${c.minv.offset}  -  ${c.maxv.block} ${c.maxv.offset}`)
+    // }
+
+    return mergedChunks
+}
+
+
+/**
+ * Merge 2 blocks if the file position gap between them is < 16 kb, and the total size is < ~5 mb
+ * @param chunk1
+ * @param chunk2
+ * @returns {boolean|boolean}
+ */
+function canMerge(chunk1, chunk2) {
+    chunk2.minv.block - chunk1.maxv.block;
+    const sizeEstimate = chunk1.maxv.block - chunk1.minv.block;
+    return sizeEstimate < 5000000
+}
+
+// Represents a CSI Bam or Tabix index
+
+const CSI1_MAGIC$1 = 21582659; // CSI\1
+const CSI2_MAGIC$1 = 38359875; // CSI\2
+
+async function parseCsiIndex(arrayBuffer, genome) {
+
+    const idx = new CSIIndex();
+    idx.parse(arrayBuffer, genome);
+    return idx
+}
+
+class CSIIndex {
+
+    constructor(tabix) {
+        this.tabix = true;   // Means whatever is indexed is BGZipped
+    }
+
+    parse(arrayBuffer, genome) {
+        const parser = new BinaryParser(new DataView(arrayBuffer));
+
+        const magic = parser.getInt();
+
+        if (magic !== CSI1_MAGIC$1) {
+            if (magic === CSI2_MAGIC$1) {
+                throw Error("CSI version 2 is not supported.  Please enter an issue at https://github.com/igvteam/igv.js")
+            } else {
+                throw Error("Not a CSI index")
+            }
+        }
+
+        this.indices = [];
+        this.blockMin = Number.MAX_SAFE_INTEGER;
+        this.lastBlockPosition = [];
+        this.sequenceIndexMap = {};
+
+        this.minShift = parser.getInt();
+        this.depth = parser.getInt();
+        const lAux = parser.getInt();
+        const seqNames = [];
+        let bmax = 0;
+
+        if (lAux >= 28) {
+            // Tabix header parameters aren't used, but they must be read to advance the pointer
+            parser.getInt();
+            parser.getInt();
+            parser.getInt();
+            parser.getInt();
+            parser.getInt();
+            parser.getInt();
+            const l_nm = parser.getInt();
+            const nameEndPos = parser.position + l_nm;
+            let i = 0;
+            while (parser.position < nameEndPos) {
+                let seq_name = parser.getString();
+                // Translate to "official" chr name.
+                if (genome) {
+                    seq_name = genome.getChromosomeName(seq_name);
+                }
+                this.sequenceIndexMap[seq_name] = i;
+                seqNames[i] = seq_name;
+                i++;
+            }
+        }
+
+        const MAX_BIN = this.bin_limit() + 1;
+        const nref = parser.getInt();
+        for (let ref = 0; ref < nref; ref++) {
+            const binIndex = [];
+            const loffset = [];
+            const nbin = parser.getInt();
+            for (let b = 0; b < nbin; b++) {
+
+                const binNumber = parser.getInt();
+                loffset[binNumber] = parser.getVPointer();
+
+                if (binNumber > MAX_BIN) {
+                    // This is a psuedo bin, not used but we have to consume the bytes
+                    parser.getInt(); // # of chunks for this bin
+                    parser.getVPointer();   // unmapped beg
+                    parser.getVPointer();   // unmapped end
+                    parser.getLong();
+                    parser.getLong();
+
+                } else {
+
+                    binIndex[binNumber] = [];
+                    const nchnk = parser.getInt(); // # of chunks for this bin
+
+                    for (let i = 0; i < nchnk; i++) {
+                        const cs = parser.getVPointer();    //chunk_beg
+                        const ce = parser.getVPointer();    //chunk_end
+                        if (cs && ce) {
+                            if (cs.block < this.blockMin) {
+                                this.blockMin = cs.block;    // Block containing first alignment
+                            }
+                            if (ce.block > bmax) {
+                                bmax = ce.block;
+                            }
+                            binIndex[binNumber].push([cs, ce]);
+                        }
+                    }
+                }
+            }
+
+            if (nbin > 0) {
+                this.indices[ref] = {
+                    binIndex: binIndex,
+                    loffset: loffset
+                };
+            }
+        }
+        this.lastBlockPosition = bmax;
+    }
+
+    get chromosomeNames() {
+        return Object.keys(this.sequenceIndexMap)
+    }
+
+    /**
+     * Fetch blocks for a particular genomic range.  This method is public so it can be unit-tested.
+     *
+     * @param refId  the sequence dictionary index of the chromosome
+     * @param min  genomic start position
+     * @param max  genomic end position
+     * @param return an array of {minv: {filePointer, offset}, {maxv: {filePointer, offset}}
+     */
+    chunksForRange(refId, min, max) {
+
+        const ba = this.indices[refId];
+        if (!ba) {
+            return []
+        } else {
+            const overlappingBins = this.reg2bins(min, max);        // List of bin #s that overlap min, max
+            if (overlappingBins.length == 0) return []
+
+            const chunks = [];
+            // Find chunks in overlapping bins.  Leaf bins (< 4681) are not pruned
+            for (let binRange of overlappingBins) {
+                for (let bin = binRange[0]; bin <= binRange[1]; bin++) {
+                    if (ba.binIndex[bin]) {
+                        const binChunks = ba.binIndex[bin];
+                        for (let c of binChunks) {
+                            const cs = c[0];
+                            const ce = c[1];
+                            chunks.push({minv: cs, maxv: ce, bin: bin});
+                        }
+                    }
+                }
+            }
+
+            const lowestOffset = ba.loffset[overlappingBins[0]];
+
+            return optimizeChunks(chunks, lowestOffset)
+        }
+
+    }
+
+    // reg2bins implementation adapted from GMOD/tabix-js  https://github.com/GMOD/tabix-js/blob/master/src/csi.ts
+    reg2bins(beg, end) {
+        beg -= 1; // < convert to 1-based closed
+        if (beg < 1) beg = 1;
+        if (end > 2 ** 34) end = 2 ** 34; // 17 GiB ought to be enough for anybody
+        end -= 1;
+        let l = 0;
+        let t = 0;
+        let s = this.minShift + this.depth * 3;
+        const bins = [];
+        for (; l <= this.depth; s -= 3, t += (1 << l * 3), l += 1) {
+            const b = t + (beg >> s);
+            const e = t + (end >> s);
+            //
+            // ITS NOT CLEAR WHERE THIS TEST CAME FROM,  but maxBinNumber is never set, and its not clear what it represents.
+            // if (e - b + bins.length > this.maxBinNumber)
+            //     throw new Error(
+            //         `query ${beg}-${end} is too large for current binning scheme (shift ${this.minShift}, depth ${this.depth}), try a smaller query or a coarser index binning scheme`,
+            //     )
+            //
+            bins.push([b, e]);
+        }
+        return bins
+    }
+
+
+    bin_limit() {
+        return ((1 << (this.depth + 1) * 3) - 1) / 7
+    }
+
+}
+
+// Represents a BAM or Tabix index.
+
+const BAI_MAGIC$1 = 21578050;
+const TABIX_MAGIC$1 = 21578324;
+
+
+async function parseBamIndex(arrayBuffer, genome) {
+    const index = new BamIndex();
+    await index.parse(arrayBuffer, false, genome);
+    return index
+}
+
+async function parseTabixIndex(arrayBuffer, genome) {
+    const index = new BamIndex();
+    await index.parse(arrayBuffer, true, genome);
+    return index
+}
+
+class BamIndex {
+
+    constructor() {
+
+    }
+
+    async parse(arrayBuffer, tabix, genome) {
+
+        const indices = [];
+        let blockMin = Number.MAX_SAFE_INTEGER;
+        let blockMax = 0;
+
+        const parser = new BinaryParser(new DataView(arrayBuffer));
+        const magic = parser.getInt();
+        const sequenceIndexMap = {};
+        if (magic === BAI_MAGIC$1 || (tabix && magic === TABIX_MAGIC$1)) {
+
+            const nref = parser.getInt();
+            if (tabix) {
+                // Tabix header parameters aren't used, but they must be read to advance the pointer
+                parser.getInt();
+                parser.getInt();
+                parser.getInt();
+                parser.getInt();
+                parser.getInt();
+                parser.getInt();
+                parser.getInt();
+
+                for (let i = 0; i < nref; i++) {
+                    let seq_name = parser.getString();
+                    // Translate to "official" chr name.
+                    if (genome) {
+                        seq_name = genome.getChromosomeName(seq_name);
+                    }
+                    sequenceIndexMap[seq_name] = i;
+                }
+            }
+
+            // Loop through sequences
+            for (let ref = 0; ref < nref; ref++) {
+
+                const binIndex = {};
+                const linearIndex = [];
+                const nbin = parser.getInt();
+
+                for (let b = 0; b < nbin; b++) {
+                    const binNumber = parser.getInt();
+                    if (binNumber === 37450) {
+                        // This is a psuedo bin, not used but we have to consume the bytes
+                        parser.getInt(); // # of chunks for this bin
+                        parser.getVPointer();   // unmapped beg
+                        parser.getVPointer();   // unmapped end
+                        parser.getLong();
+                        parser.getLong();
+
+                    } else {
+
+                        binIndex[binNumber] = [];
+                        const nchnk = parser.getInt(); // # of chunks for this bin
+
+                        for (let i = 0; i < nchnk; i++) {
+                            const cs = parser.getVPointer();    //chunk_beg
+                            const ce = parser.getVPointer();    //chunk_end
+                            if (cs && ce) {
+                                if (cs.block < blockMin) {
+                                    blockMin = cs.block;    // Block containing first alignment
+                                }
+                                if (ce.block > blockMax) {
+                                    blockMax = ce.block;
+                                }
+                                binIndex[binNumber].push([cs, ce]);
+                            }
+                        }
+                    }
+                }
+
+                const nintv = parser.getInt();
+                for (let i = 0; i < nintv; i++) {
+                    const cs = parser.getVPointer();
+                    linearIndex.push(cs);   // Might be null
+                }
+
+                if (nbin > 0) {
+                    indices[ref] = {
+                        binIndex: binIndex,
+                        linearIndex: linearIndex
+                    };
+                }
+            }
+
+            this.firstBlockPosition = blockMin;
+            this.lastBlockPosition = blockMax;
+            this.indices = indices;
+            this.sequenceIndexMap = sequenceIndexMap;
+            this.tabix = tabix;
+
+        } else {
+            throw new Error(indexURL + " is not a " + (tabix ? "tabix" : "bai") + " file")
+        }
+
+
+    }
+
+    get chromosomeNames() {
+        return Object.keys(this.sequenceIndexMap)
+    }
+
+    /**
+     * Fetch chunks for a particular genomic range.  This method is public so it can be unit-tested.
+     *
+     * @param refId  the sequence dictionary index of the chromosome
+     * @param min  genomic start position
+     * @param max  genomic end position
+     * @param return an array of objects representing chunks (file spans) {minv: {block, offset}, {maxv: {block, offset}}
+     */
+    chunksForRange(refId, min, max) {
+
+        const bam = this;
+        const ba = bam.indices[refId];
+
+        if (!ba) {
+            return []
+        } else {
+            const overlappingBins = reg2bins(min, max);        // List of bin #s that overlap min, max
+
+            //console.log("bin ranges")
+            //for(let b of overlappingBins) {
+            //    console.log(`${b[0]} - ${b[1]}`)
+            //}
+
+            const chunks = [];
+            // Find chunks in overlapping bins.  Leaf bins (< 4681) are not pruned
+            for (let binRange of overlappingBins) {
+                for (let bin = binRange[0]; bin <= binRange[1]; bin++) {
+                    if (ba.binIndex[bin]) {
+                        const binChunks = ba.binIndex[bin];
+                        for (let c of binChunks) {
+                            const cs = c[0];
+                            const ce = c[1];
+                            chunks.push({minv: cs, maxv: ce});
+                        }
+                    }
+                }
+            }
+
+            // Use the linear index to find minimum file position of chunks that could contain alignments in the region
+            const nintv = ba.linearIndex.length;
+
+            let lowest;
+            const minLin = Math.min(min >> 14, nintv - 1);    // i.e. min / 16384
+            const maxLin = Math.min(max >> 14, nintv - 1);
+            for (let i = minLin; i <= maxLin; i++) {
+                const vp = ba.linearIndex[i];
+                if (vp) {
+                    lowest = vp;       // lowest file offset that contains alignments overlapping (min, max)
+                    break
+                }
+            }
+
+            return optimizeChunks(chunks, lowest)
+        }
+    }
+}
+
+
+
+/**
+ * Calculate the list of bins that overlap with region [beg, end]
+ *
+ */
+function reg2bins(beg, end) {
+    const list = [];
+    if (end >= 1 << 29) end = 1 << 29;
+    --end;
+    list.push([0, 0]);
+    list.push([1 + (beg >> 26), 1 + (end >> 26)]);
+    list.push([9 + (beg >> 23), 9 + (end >> 23)]);
+    list.push([73 + (beg >> 20), 73 + (end >> 20)]);
+    list.push([585 + (beg >> 17), 585 + (end >> 17)]);
+    list.push([4681 + (beg >> 14), 4681 + (end >> 14)]);
+
+    // for (k = 1 + (beg >> 26); k <= 1 + (end >> 26); ++k) list.push(k);
+    // for (k = 9 + (beg >> 23); k <= 9 + (end >> 23); ++k) list.push(k);
+    // for (k = 73 + (beg >> 20); k <= 73 + (end >> 20); ++k) list.push(k);
+    // for (k = 585 + (beg >> 17); k <= 585 + (end >> 17); ++k) list.push(k);
+    // for (k = 4681 + (beg >> 14); k <= 4681 + (end >> 14); ++k) list.push(k);
+    return list
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+async function parseTribbleIndex(arrayBuffer, genome) {
+
+    const index = new TribbleIndex();
+    index.parse(arrayBuffer, genome);
+    return index
+}
+
+class TribbleIndex {
+
+    constructor() {
+
+    }
+
+    async parse(arrayBuffer, genome) {
+
+        let blockMax = 0;
+        this.chrIndex = {};
+        this.lastBlockPosition = [];
+        const parser = new BinaryParser(new DataView(arrayBuffer));
+        readHeader(parser);
+
+        let nChrs = parser.getInt();
+        while (nChrs-- > 0) {
+
+            // todo -- support interval tree index, we're assuming its a linear index
+
+            let chr = parser.getString();
+            if (genome) chr = genome.getChromosomeName(chr); // Translate to canonical name
+
+            const binWidth = parser.getInt();
+            const nBins = parser.getInt();
+            const longestFeature = parser.getInt();
+            parser.getInt() > 0;
+            parser.getInt();
+
+            // note the code below accounts for > 60% of the total time to read an index
+            let pos = parser.getLong();
+            const blocks = [];
+            for (let binNumber = 0; binNumber < nBins; binNumber++) {
+                const nextPos = parser.getLong();
+                blocks.push({min: pos, max: nextPos}); //        {position: pos, size: size});
+                pos = nextPos;
+                if (nextPos > blockMax) {
+                    blockMax = nextPos;
+                }
+            }
+            this.chrIndex[chr] = {chr: chr, blocks: blocks, longestFeature: longestFeature, binWidth: binWidth};
+        }
+
+        this.lastBlockPosition = blockMax;
+
+
+        /**
+         * Read the header .   Data here is not used in igv.js but we need to read it to advance the pointer.
+         * @param parser
+         */
+        function readHeader(parser) {
+
+            parser.getInt();     //   view._getInt32(offset += 32, true);
+            parser.getInt();
+            const version = parser.getInt();
+            parser.getString();
+            parser.getLong();
+            parser.getLong();
+            parser.getString();
+            parser.getInt();
+            if (version >= 3) {
+                let nProperties = parser.getInt();
+                while (nProperties-- > 0) {
+                    parser.getString();
+                    parser.getString();
+                }
+            }
+        }
+    }
+
+    get chromosomeNames() {
+        return Object.keys(this.chrIndex)
+    }
+
+
+    /**
+     * Fetch blocks for a particular genomic range.
+     *
+     * @param queryChr the sequence dictionary index of the chromosome
+     * @param min  genomic start position
+     * @param max  genomic end position
+     */
+    chunksForRange(queryChr, min, max) { //function (refId, min, max) {
+        const chrIdx = this.chrIndex[queryChr];
+
+        if (chrIdx) {
+            const blocks = chrIdx.blocks;
+            const longestFeature = chrIdx.longestFeature;
+            const binWidth = chrIdx.binWidth;
+            const adjustedPosition = Math.max(min - longestFeature, 0);
+            const startBinNumber = Math.floor(adjustedPosition / binWidth);
+
+            if (startBinNumber >= blocks.length) // are we off the end of the bin list, so return nothing
+                return []
+            else {
+                const endBinNumber = Math.min(Math.floor((max - 1) / binWidth), blocks.length - 1);
+
+                // By definition blocks are adjacent in the file for the liner index.  Combine them into one merged block
+                const startPos = blocks[startBinNumber].min;
+                const endPos = blocks[endBinNumber].max;
+                const size = endPos - startPos;
+                if (size === 0) {
+                    return []
+                } else {
+                    const mergedBlock = {minv: {block: startPos, offset: 0}, maxv: {block: endPos, offset: 0}};
+                    return [mergedBlock]
+                }
+            }
+        } else {
+            return undefined
+        }
+    }
+}
+
+const CSI1_MAGIC = 21582659; // CSI\1
+const CSI2_MAGIC = 38359875; // CSI\2
+const BAI_MAGIC = 21578050;
+const TABIX_MAGIC = 21578324;
+const TRIBBLE_MAGIC = 1480870228;   //  byte[]{'T', 'I', 'D', 'X'};
+
+/**
+ * @param indexURL
+ * @param config
+ * @param tabix
+ *
+ */
+async function loadIndex(indexURL, config, genome) {
+
+    let arrayBuffer = await igvxhr.loadArrayBuffer(indexURL, buildOptions(config));
+    let dv = new DataView(arrayBuffer);
+
+    // Some indexs are bgzipped, specifically tabix, and csi.  Bam (bai) are not.  Tribble is usually not.
+    // Check first 2 bytes of file for gzip magic number, and inflate if neccessary
+    if (dv.getUint8(0) === 0x1f && dv.getUint8(1) === 0x8b) {    // gzipped
+        const inflate = unbgzf(arrayBuffer);
+        arrayBuffer = inflate.buffer;
+        dv = new DataView(arrayBuffer);
+    }
+
+    const magic = dv.getInt32(0, true);
+    switch (magic) {
+        case BAI_MAGIC:
+            return parseBamIndex(arrayBuffer, genome)
+        case TABIX_MAGIC:
+            return parseTabixIndex(arrayBuffer, genome)
+        case CSI1_MAGIC:
+            return parseCsiIndex(arrayBuffer, genome)
+        case TRIBBLE_MAGIC:
+            return parseTribbleIndex(arrayBuffer, genome)
+        case CSI2_MAGIC:
+            throw Error("CSI version 2 is not supported.")
+        default:
+            throw Error(`Unrecognized index type: ${indexURL}`)
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2017 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+function getDataWrapper(data) {
+
+    if (typeof (data) == 'string' || data instanceof String) {
+        return new StringDataWrapper(data)
+    } else {
+        return new ByteArrayDataWrapper(data)
+    }
+}
+
+
+// Data might be a string, or an UInt8Array
+class StringDataWrapper {
+
+    constructor(string) {
+        this.data = string;
+        this.ptr = 0;
+    }
+
+    nextLine() {
+        var start = this.ptr,
+            idx = this.data.indexOf('\n', start),
+            data = this.data;
+
+        if (idx > 0) {
+            this.ptr = idx + 1;   // Advance pointer for next line
+            if (idx > start && data.charAt(idx - 1) === '\r') {
+                // Trim CR manually in CR/LF sequence
+                return data.substring(start, idx - 1)
+            }
+            return data.substring(start, idx)
+        } else {
+            var length = data.length;
+            this.ptr = length;
+            // Return undefined only at the very end of the data
+            return (start >= length) ? undefined : data.substring(start)
+        }
+    }
+}
+
+class ByteArrayDataWrapper {
+
+    constructor(array) {
+        this.data = array;
+        this.length = this.data.length;
+        this.ptr = 0;
+    }
+
+    nextLine() {
+
+        var c, result;
+        result = "";
+
+        if (this.ptr >= this.length) return undefined
+
+        for (var i = this.ptr; i < this.length; i++) {
+            c = String.fromCharCode(this.data[i]);
+            if (c === '\r') continue
+            if (c === '\n') break
+            result = result + c;
+        }
+
+        this.ptr = i + 1;
+        return result
+    }
+
+}
+
+/**
+ * Class to iterate line-by-line over a BGZipped text file.  This class is useful for iterating from the start of
+ * the file.  Not useful for indexed queries.
+ */
+
+class BGZLineReader {
+
+    constructor(config) {
+        this.config = config;
+        this.filePtr = 0;
+        this.bufferPtr = 0;
+        this.buffer;
+    }
+
+    async nextLine() {
+
+        let result = undefined;
+
+        try {
+            while (true) {
+                const length = this.buffer ? this.buffer.length : 0;
+                while (this.bufferPtr < length) {
+                    const c = String.fromCharCode(this.buffer[this.bufferPtr++]);
+                    if (c === '\r') continue
+                    if (c === '\n') {
+                        return result
+                    }
+                    result = result ? result + c : c;
+                }
+                if (this.eof) {
+                    return result
+                } else {
+                    await this.readNextBlock();
+                }
+            }
+        } catch (e) {
+            console.warn(e);
+            this.eof = true;
+            return result
+        }
+    }
+
+    async readNextBlock() {
+
+        const bsizeOptions = buildOptions(this.config, {
+            range: {
+                start: this.filePtr,
+                size: 26
+            }
+        });
+        const abuffer = await igvxhr.loadArrayBuffer(this.config.url, bsizeOptions);
+        const bufferSize = bgzBlockSize$1(abuffer);
+
+        if (bufferSize === 0) {
+            this.eof = true;
+            this.buffer = undefined;
+        } else {
+
+            const options = buildOptions(this.config, {range: {start: this.filePtr, size: bufferSize}});
+            const data = await igvxhr.loadArrayBuffer(this.config.url, options);
+            if (data.byteLength < bufferSize) {
+                this.eof = true; // Assumption
+            }
+            this.buffer = unbgzf(data);
+            if(this.buffer.byteLength == 0) {
+                this.eof = true;
+            }
+            this.bufferPtr = 0;
+            this.filePtr += data.byteLength; //data.byteLength;
+        }
+    }
+
+}
+
+function concatenateArrayBuffers(arrayBuffers) {
+
+    if (arrayBuffers.length === 1) {
+        return arrayBuffers[0]
+    }
+
+    let len = 0;
+    for (const b of arrayBuffers) {
+        len += b.byteLength;
+    }
+    const c = new Uint8Array(len);
+    let offset = 0;
+    for (const b of arrayBuffers) {
+        c.set(new Uint8Array(b), offset);
+        offset += b.byteLength;
+    }
+    return c.buffer
+}
+
+/**
+ * Return the block size for the data buffer.
+ * @param data
+ * @returns {number}
+ */
+const bgzBlockSize = (data) => {
+    const ba = ArrayBuffer.isView(data) ? data : new Uint8Array(data);
+    const bsize = (ba[17] << 8 | ba[16]) + 1;
+    return bsize
+};
+
+class BGZBlockLoader {
+
+    constructor(config) {
+        this.config = config;
+        this.cacheBlocks = false != config.cacheBlocks;   // Default to true
+        this.cache = undefined;
+    }
+
+    /**
+     * Return inflated data from startBlock through endBlock as an UInt8Array
+     *
+     * @param minv minimum virtual pointer  {block, offset}
+     * @param maxv maximum virtual pointer  {block, offset}
+     * @returns {Promise<Uint8Array>}
+     */
+    async getData(minv, maxv) {
+
+        const startBlock = minv.block;
+        const endBlock = maxv.block;
+        const skipEnd = maxv.offset === 0;
+
+        const blocks = await this.getInflatedBlocks(startBlock, endBlock, skipEnd);
+        if (blocks.length === 1) {
+            return blocks[0]
+        }
+
+        let len = 0;
+        for (const b of blocks) {
+            len += b.byteLength;
+        }
+        const c = new Uint8Array(len);
+        let offset = 0;
+        for (const b of blocks) {
+            c.set(b, offset);
+            offset += b.byteLength;
+        }
+        return c
+    }
+
+    /**
+     * Return the inflated data for the specified blocks as an array of Uint8Arrays.  This method is public so
+     * it can be unit tested. *
+     * @param startBlock
+     * @param endBlock
+     * @returns {Promise<*[Uint8Array]>}
+     */
+    async getInflatedBlocks(startBlock, endBlock, skipEnd) {
+
+        if (!this.cacheBlocks) {
+            const buffer = await this.loadBLockData(startBlock, endBlock, {skipEnd});
+            return inflateBlocks(buffer)
+        } else {
+
+            const c = this.cache;
+            if (c &&
+                c.startBlock <= startBlock &&
+                (c.endBlock >= endBlock || skipEnd && c.nextEndBlock === endBlock)) {
+                //console.log("Complete overlap")
+                const startOffset = startBlock - c.startBlock;
+                const endOffset = endBlock - c.startBlock;
+                return inflateBlocks(c.buffer, startOffset, endOffset)
+                // Don't update cache, still valid
+            } else {
+
+                let buffer;
+                if (!c || (c.startBlock > endBlock || c.endBlock < startBlock)) {
+                    // no overlap with cache
+                    buffer = await this.loadBLockData(startBlock, endBlock, {skipEnd});
+                } else {
+
+                    //console.log("Some overlap")
+                    const arrayBuffers = [];
+
+                    // Load blocks preceding cache start, if any
+                    if (startBlock < c.startBlock) {
+                        // load first blocks
+                        const startBuffer = await this.loadBLockData(startBlock, c.startBlock, {skipEnd: true});
+                        arrayBuffers.push(startBuffer);
+                    }
+
+                    // Slice cached buffer as needed
+                    let cachedBuffer;
+                    if (startBlock <= c.startBlock && endBlock >= c.endBlock) {
+                        cachedBuffer = c.buffer;
+                    } else {
+                        const start = Math.max(0, startBlock - c.startBlock);
+                        let end;
+                        if (endBlock >= c.endBlock) {
+                            end = c.buffer.byteLength;
+                        } else {
+                            // We need to find the byte position of the end of "endBlock"
+                            const boundaries = findBlockBoundaries(c.buffer);
+                            for (let i = 0; i < boundaries.length - 1; i++) {
+                                if (c.startBlock + boundaries[i] === endBlock) {
+                                    end = boundaries[i + 1];
+                                    break
+                                }
+                            }
+                            // Do something if end not found
+                        }
+                        cachedBuffer = c.buffer.slice(start, end);
+                    }
+                    arrayBuffers.push(cachedBuffer);
+
+                    // Load end blocks, if any
+                    if (endBlock > c.endBlock) {
+                        const endBuffer = await this.loadBLockData(c.endBlock, endBlock, {skipStart: true, skipEnd});
+                        arrayBuffers.push(endBuffer);
+                    }
+
+                    buffer = concatenateArrayBuffers(arrayBuffers);
+                }
+
+                // If skipEnd === true we need to find boundary of last block in cache
+                let nextEndBlock = endBlock;
+                if(skipEnd) {
+                    const boundaries = findBlockBoundaries(buffer);
+                    endBlock = boundaries[boundaries.length - 1];
+                }
+
+                this.cache = {startBlock, endBlock, nextEndBlock, buffer};
+                return inflateBlocks(buffer)
+            }
+        }
+    }
+
+    async loadBLockData(startBlock, endBlock, options) {
+
+        const config = this.config;
+        const skipStart = options && options.skipStart;
+        const skipEnd = options && options.skipEnd;
+
+        // Get size of last block if not skipped
+        let lastBlockSize = 0;
+        if (!skipEnd) {
+            const bsizeOptions = buildOptions(config, {range: {start: endBlock, size: 26}});
+            const abuffer = await igvxhr.loadArrayBuffer(config.url, bsizeOptions);
+            lastBlockSize = bgzBlockSize(abuffer);
+        }
+
+        if (skipStart) {
+            const bsizeOptions = buildOptions(config, {range: {start: startBlock, size: 26}});
+            const abuffer = await igvxhr.loadArrayBuffer(config.url, bsizeOptions);
+            startBlock += bgzBlockSize(abuffer);
+        }
+
+        // Load data for all blocks
+        const loadOptions = buildOptions(config, {
+            range: {
+                start: startBlock,
+                size: endBlock + lastBlockSize - startBlock
+            }
+        });
+
+        //console.log(`${this.config.name}  Loaded ${startBlock} - ${endBlock + lastBlockSize}   (${(endBlock + lastBlockSize - startBlock) / 1000} kb)`)
+
+        return igvxhr.loadArrayBuffer(config.url, loadOptions)
+    }
+}
+
+function findBlockBoundaries(arrayBuffer) {
+
+    const byteLengh = arrayBuffer.byteLength;
+    let offset = 0;
+    const blockBoundaries = [0];
+    while (offset < byteLengh) {
+        //console.log("Cache block "  + offset)
+        const ba = new Uint8Array(arrayBuffer, offset);
+        const bsize = (ba[17] << 8 | ba[16]) + 1;
+        offset += bsize;
+        if (offset < byteLengh) {
+            blockBoundaries.push(offset);
+        }
+    }
+    return blockBoundaries
+}
+
+
+/**
+ * Inflate compressed blocks within the data buffer*
+ * @param data
+ * @param startBlock - optional file location for start block.  Default == 0
+ * @param endBlock - optional file location for last block to decompress.
+ * @returns {*[]}
+ */
+function inflateBlocks(data, startBlock, endBlock) {
+
+    startBlock = startBlock || 0;
+
+    const oBlockList = [];
+    let ptr = startBlock;
+
+    const lim = data.byteLength - 18;
+    while (ptr < lim) {
+        try {
+            //console.log(113873 + ptr)
+            const header = new Uint8Array(data, ptr, 18);
+            const xlen = (header[11] << 8) | (header[10]);
+            const bsize = ((header[17] << 8) | (header[16]));  // Total block size, including header, minus 1
+            const start = 12 + xlen + ptr;    // Start of CDATA
+            const bytesLeft = data.byteLength - start;
+            const cDataSize = bsize - xlen - 18;
+
+            if (bytesLeft < cDataSize || cDataSize <= 0) {
+                // This is unexpected.  Throw error?
+                break
+            }
+
+            const cdata = new Uint8Array(data, start, cDataSize);
+            const unc = inflateRaw_1(cdata);
+            oBlockList.push(unc);
+
+            if (endBlock === ptr) {
+                break
+            } else {
+                // Advance to next block
+                ptr += bsize + 1;
+            }
+
+        } catch (e) {
+            console.error(e);
+            break
+        }
+    }
+    return oBlockList
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * Reader for "bed like" files (tab delimited files with 1 feature per line: bed, gff, vcf, etc)
+ *
+ * @param config
+ * @constructor
+ */
+class FeatureFileReader {
+
+    constructor(config, genome) {
+
+        var uriParts;
+
+        this.config = config || {};
+        this.genome = genome;
+        this.indexURL = config.indexURL;
+        this.indexed = config.indexed || this.indexURL !== undefined;
+        this.queryable = this.indexed;
+
+        if (isFile(this.config.url)) {
+            this.filename = this.config.url.name;
+        } else if (isDataURL(this.config.url)) {
+            this.indexed = false;  // by definition
+            this.dataURI = config.url;
+        } else {
+            uriParts = parseUri(this.config.url);
+            this.filename = config.filename || uriParts.file;
+        }
+
+        this.parser = this.getParser(this.config);
+
+        if (this.config.format === "vcf" && !this.config.indexURL) {
+            console.warn("Warning: index file not specified.  The entire vcf file will be loaded.");
+        }
+
+    }
+
+    async defaultVisibilityWindow() {
+        if (this.config.indexURL) {
+            const index = await this.getIndex();
+            if (index && index.lastBlockPosition) {
+                let gl = 0;
+                const s = 10000;
+                for (let c of index.chromosomeNames) {
+                    const chromosome = this.genome.getChromosome(c);
+                    if (chromosome) {
+                        gl += chromosome.bpLength;
+                    }
+                }
+                return Math.round((gl / index.lastBlockPosition) * s)
+            }
+        }
+    }
+
+    /**
+     * Return a promise to load features for the genomic interval
+     * @param chr
+     * @param start
+     * @param end
+     */
+    async readFeatures(chr, start, end) {
+
+        const index = await this.getIndex();
+        if (index) {
+            this.indexed = true;
+            return this.loadFeaturesWithIndex(chr, start, end)
+        } else if (this.dataURI) {
+            this.indexed = false;
+            return this.loadFeaturesFromDataURI()
+        } else {
+            this.indexed = false;
+            return this.loadFeaturesNoIndex()
+        }
+
+    }
+
+    async readHeader() {
+
+        if (this.dataURI) {
+            await this.loadFeaturesFromDataURI(this.dataURI);
+            return this.header
+        } else {
+
+            if (this.config.indexURL) {
+                const index = await this.getIndex();
+                if (!index) {
+                    // Note - it should be impossible to get here
+                    throw new Error("Unable to load index: " + this.config.indexURL)
+                }
+
+                let dataWrapper;
+                if (index.tabix) {
+                    this._blockLoader = new BGZBlockLoader(this.config);
+                    dataWrapper = new BGZLineReader(this.config);
+                } else {
+                    // Tribble
+                    const maxSize = Object.values(index.chrIndex)
+                        .flatMap(chr => chr.blocks)
+                        .map(block => block.max)
+                        .reduce((previous, current) =>
+                            Math.min(previous, current), Number.MAX_SAFE_INTEGER);
+
+                    const options = buildOptions(this.config, {bgz: index.tabix, range: {start: 0, size: maxSize}});
+                    const data = await igvxhr.loadString(this.config.url, options);
+                    dataWrapper = getDataWrapper(data);
+                }
+
+
+                this.header = await this.parser.parseHeader(dataWrapper);  // Cache header, might be needed to parse features
+                return this.header
+
+            } else {
+                // If this is a non-indexed file we will load all features in advance
+                const options = buildOptions(this.config);
+                const data = await igvxhr.loadString(this.config.url, options);
+                let dataWrapper = getDataWrapper(data);
+                this.header = await this.parser.parseHeader(dataWrapper);
+
+                // Reset data wrapper and parse features
+                dataWrapper = getDataWrapper(data);
+                this.features = await this.parser.parseFeatures(dataWrapper);   // cache features
+                return this.header
+            }
+        }
+    }
+
+
+    getParser(config) {
+
+        switch (config.format) {
+            case "vcf":
+                return new VcfParser(config)
+            case "seg" :
+                return new SegParser("seg")
+            case "mut":
+                return new SegParser("mut")
+            case "maf":
+                return new SegParser("maf")
+            case "gwas" :
+                return new GWASParser(config)
+            case "aed" :
+                return new AEDParser(config)
+            default:
+                return new FeatureParser(config)
+        }
+    }
+
+    async loadFeaturesNoIndex() {
+
+        if (this.features) {
+            // An optimization hack for non-indexed files, features are temporarily cached when header is read.
+            const tmp = this.features;
+            delete this.features;
+            return tmp
+        } else {
+            const options = buildOptions(this.config);    // Add oauth token, if any
+            const data = await igvxhr.loadString(this.config.url, options);
+            if (!this.header) {
+                const dataWrapper = getDataWrapper(data);
+                this.header = await this.parser.parseHeader(dataWrapper);
+            }
+            const dataWrapper = getDataWrapper(data);
+            const features = await this.parser.parseFeatures(dataWrapper);   // <= PARSING DONE HERE
+            return features
+        }
+    }
+
+    async loadFeaturesWithIndex(chr, start, end) {
+
+        // insure that header has been loaded -- tabix _blockLoader is initialized as side effect
+        if(!this.dataURI && !this.header) {
+            await this.readHeader();
+        }
+
+        //console.log("Using index"
+        const config = this.config;
+        const parser = this.parser;
+        const tabix = this.index.tabix;
+        const refId = tabix ? this.index.sequenceIndexMap[chr] : chr;
+        if (refId === undefined) {
+            return []
+        }
+
+        const genome = this.genome;
+        const chunks = this.index.chunksForRange(refId, start, end);
+        if (!chunks || chunks.length === 0) {
+            return []
+        } else {
+            const allFeatures = [];
+            for (let chunk of chunks) {
+
+                let inflated;
+                if (tabix) {
+                    inflated = await this._blockLoader.getData(chunk.minv, chunk.maxv);
+                } else {
+                    const options = buildOptions(config, {
+                        range: {
+                            start: chunk.minv.block,
+                            size: chunk.maxv.block - chunk.minv.block + 1
+                        }
+                    });
+                    inflated = await igvxhr.loadString(config.url, options);
+                }
+
+                const slicedData = chunk.minv.offset ? inflated.slice(chunk.minv.offset) : inflated;
+                const dataWrapper = getDataWrapper(slicedData);
+                let slicedFeatures = await parser.parseFeatures(dataWrapper);
+
+                // Filter psuedo-features (e.g. created mates for VCF SV records)
+                slicedFeatures = slicedFeatures.filter(f => f._f === undefined);
+
+                // Filter features not in requested range.
+                let inInterval = false;
+                for (let i = 0; i < slicedFeatures.length; i++) {
+                    const f = slicedFeatures[i];
+
+                    const canonicalChromosome = genome ? genome.getChromosomeName(f.chr) : f.chr;
+                    if (canonicalChromosome !== chr) {
+                        if (allFeatures.length === 0) {
+                            continue  //adjacent chr to the left
+                        } else {
+                            break //adjacent chr to the right
+                        }
+                    }
+                    if (f.start > end) {
+                        allFeatures.push(f);  // First feature beyond interval
+                        break
+                    }
+                    if (f.end >= start && f.start <= end) {
+                        if (!inInterval) {
+                            inInterval = true;
+                            if (i > 0) {
+                                allFeatures.push(slicedFeatures[i - 1]);
+                            }
+                        }
+                        allFeatures.push(f);
+                    }
+                }
+
+            }
+            allFeatures.sort(function (a, b) {
+                return a.start - b.start
+            });
+
+            return allFeatures
+        }
+    }
+
+    async getIndex() {
+        if (this.index) {
+            return this.index
+        } else if (this.config.indexURL) {
+            this.index = await this.loadIndex();
+            return this.index
+        }
+    }
+
+    /**
+     * Return a Promise for the async loaded index
+     */
+    async loadIndex() {
+        const indexURL = this.config.indexURL;
+        return loadIndex(indexURL, this.config, this.genome)
+    }
+
+    async loadFeaturesFromDataURI() {
+
+        if (this.features) {
+            // An optimization hack for non-indexed files, features are temporarily cached when header is read.
+            const tmp = this.features;
+            delete this.features;
+            return tmp
+        } else {
+            const plain = decodeDataURI$1(this.dataURI);
+            let dataWrapper = getDataWrapper(plain);
+            this.header = await this.parser.parseHeader(dataWrapper);
+            if (this.header instanceof String && this.header.startsWith("##gff-version 3")) {
+                this.format = 'gff3';
+            }
+
+            dataWrapper = getDataWrapper(plain);
+            this.features = await this.parser.parseFeatures(dataWrapper);
+            return this.features
+        }
+    }
+
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 University of California San Diego
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const isString$1 = isString$2;
+
+
+class CustomServiceReader {
+    constructor(config) {
+        this.config = config;
+    }
+
+    async readFeatures(chr, start, end) {
+
+        let url;
+        if (typeof this.config.url === 'function') {
+            url = this.config.url({chr, start, end});
+        } else {
+            url = this.config.url
+                .replace("$CHR", chr)
+                .replace("$START", start)
+                .replace("$END", end);
+        }
+
+        let config = Object.assign({}, this.config);
+        if (this.config.body !== undefined) {
+            if (typeof this.config.body === 'function') {
+                config.body = this.config.body({chr, start, end});
+            } else {
+                config.body =
+                    this.config.body
+                        .replace("$CHR", chr)
+                        .replace("$START", start)
+                        .replace("$END", end);
+            }
+        }
+
+
+        let features;
+        const data = await igvxhr.load(url, config);
+        if (data) {
+            if (typeof this.config.parser === "function") {
+                features = this.config.parser(data);
+            } else if (isString$1(data)) {
+                features = JSON.parse(data);
+            } else {
+                features = data;
+            }
+        }
+        if (this.config.mappings) {
+            let mappingKeys = Object.keys(this.config.mappings);
+            for (let f of features) {
+                for (let key of mappingKeys) {
+                    f[key] = f[this.config.mappings[key]];
+                }
+            }
+        }
+        return features
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2017 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const UCSCServiceReader = function (config, genome) {
+    this.config = config;
+    this.genome = genome;
+    this.expandQueryInterval = false;
+};
+
+UCSCServiceReader.prototype.readFeatures = function (chr, start, end) {
+
+    const s = Math.max(0, Math.floor(start));
+    let e = Math.ceil(end);
+
+    if (this.genome) {
+        const c = this.genome.getChromosome(chr);
+        if (c && e > c.bpLength) {
+            e = c.bpLength;
+        }
+    }
+
+
+    const url = this.config.url + '?db=' + this.config.db + '&table=' + this.config.tableName + '&chr=' + chr + '&start=' + s + '&end=' + e;
+
+    return igvxhr.loadJson(url, this.config)
+        .then(function (data) {
+            if (data) {
+                data.forEach(function (sample) {
+                    if (sample.hasOwnProperty('exonStarts') &&
+                        sample.hasOwnProperty('exonEnds') &&
+                        sample.hasOwnProperty('exonCount') &&
+                        sample.hasOwnProperty('cdsStart') &&
+                        sample.hasOwnProperty('cdsEnd')) {
+                        addExons(sample);
+                    }
+                });
+                return data
+            } else {
+                return null
+            }
+        })
+};
+
+function addExons(sample) {
+    var exonCount, exonStarts, exonEnds, exons, eStart, eEnd;
+    exonCount = sample['exonCount'];
+    exonStarts = sample['exonStarts'].split(',');
+    exonEnds = sample['exonEnds'].split(',');
+    exons = [];
+
+    for (var i = 0; i < exonCount; i++) {
+        eStart = parseInt(exonStarts[i]);
+        eEnd = parseInt(exonEnds[i]);
+        var exon = {start: eStart, end: eEnd};
+
+        if (sample.cdsStart > eEnd || sample.cdsEnd < sample.cdsStart) exon.utr = true;   // Entire exon is UTR
+        if (sample.cdsStart >= eStart && sample.cdsStart <= eEnd) exon.cdStart = sample.cdsStart;
+        if (sample.cdsEnd >= eStart && sample.cdsEnd <= eEnd) exon.cdEnd = sample.cdsEnd;
+
+        exons.push(exon);
+    }
+
+    sample.exons = exons;
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2021 University of California San Diego
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const gffNameFields = ["Name", "gene_name", "gene", "gene_id", "alias", "locus", "name"];
+
+class GFFHelper {
+
+    constructor(options) {
+        this.format = options.format;
+        this.nameField = options.nameField;
+        this.filterTypes = options.filterTypes === undefined ?
+            new Set(['chromosome']) :
+            new Set(options.filterTypes);
+    }
+
+    combineFeatures(features, genomicInterval) {
+
+        let combinedFeatures;
+
+        const filterTypes = this.filterTypes;
+        features = features.filter(f => filterTypes === undefined || !filterTypes.has(f.type));
+
+        if ("gff3" === this.format) {
+            const tmp = this.combineFeaturesById(features);
+            combinedFeatures = this.combineFeaturesByType(tmp);
+        } else {
+            combinedFeatures = this.combineFeaturesByType(features);
+        }
+        combinedFeatures.sort(function (a, b) {
+            return a.start - b.start
+        });
+        this.numberExons(combinedFeatures, genomicInterval);
+        this.nameFeatures(combinedFeatures);
+        return combinedFeatures
+    }
+
+    /**
+     * Combine multiple non-transcript model features with the same ID on the same chromosome into a single feature.
+     * Features that are part of the transcript model (e.g. exon, mRNA, etc) are combined later.
+     *
+     * @param features
+     * @returns {[]}
+     */
+    combineFeaturesById(features) {
+
+        const chrIdMap = new Map();
+        const combinedFeatures = [];
+
+        for (let f of features) {
+            if (isTranscriptPart(f.type) || isTranscript(f.type) || !f.id) {
+                combinedFeatures.push(f);
+            } else {
+                let idMap = chrIdMap.get(f.chr);
+                if (!idMap) {
+                    idMap = new Map();
+                    chrIdMap.set(f.chr, idMap);
+                }
+
+                let featureArray = idMap.get(f.id);
+                if (featureArray) {
+                    featureArray.push(f);
+                } else {
+                    idMap.set(f.id, [f]);
+                }
+            }
+        }
+
+        for (let idMap of chrIdMap.values()) {
+            for (let featureArray of idMap.values()) {
+                if (featureArray.length > 1) {
+                    // Use the first feature as prototypical (for column 9 attributes), and adjust start/end
+                    // Parts are represented as "exons", as that is how they are presented visually
+                    const cf = featureArray[0];
+                    cf.exons = [];
+                    for (let f of featureArray) {
+                        cf.start = Math.min(cf.start, f.start);
+                        cf.end = Math.max(cf.end, f.end);
+                        cf.exons.push({
+                            start: f.start,
+                            end: f.end
+                        });
+                    }
+                    combinedFeatures.push(cf);
+                } else {
+                    combinedFeatures.push(featureArray[0]);
+                }
+            }
+        }
+
+        return combinedFeatures
+    }
+
+    combineFeaturesByType(features) {
+
+        // Build dictionary of genes
+        const genes = features.filter(f => "gene" === f.type || f.type.endsWith("_gene"));
+        const geneMap = Object.create(null);
+        for (let g of genes) {
+            geneMap[g.id] = g;
+        }
+
+        // 1. Build dictionary of transcripts
+        const transcripts = Object.create(null);
+        const combinedFeatures = [];
+        const consumedFeatures = new Set();
+        const filterTypes = this.filterTypes;
+
+        features = features.filter(f => filterTypes === undefined || !filterTypes.has(f.type));
+
+        for (let f of features) {
+
+            if (f.type === "biological_region") {
+                console.log();
+            }
+
+            if (isTranscript(f.type)) {
+                const transcriptId = f.id; // getAttribute(f.attributeString, "transcript_id", /\s+/);
+                if (undefined !== transcriptId) {
+                    const gffTranscript = new GFFTranscript(f);
+                    transcripts[transcriptId] = gffTranscript;
+                    combinedFeatures.push(gffTranscript);
+                    consumedFeatures.add(f);
+                    const g = geneMap[f.parent];
+                    if (g) {
+                        gffTranscript.geneObject = g;
+                        consumedFeatures.add(g);
+                    }
+                }
+            }
+        }
+
+        // Add exons and transcript parts
+        for (let f of features) {
+            if (isTranscriptPart(f.type)) {
+                const parents = getParents(f);
+                if (parents) {
+                    for (let id of parents) {
+
+                        let transcript = transcripts[id];
+                        if (!transcript && this.format === "gtf") {
+                            // GTF does not require explicit transcript record, start one with this feature.
+                            const psuedoTranscript = Object.assign({}, f);
+                            psuedoTranscript.type = "transcript";
+                            transcript = new GFFTranscript(psuedoTranscript);
+                            transcripts[id] = transcript;
+                            combinedFeatures.push(transcript);
+                        }
+                        if (transcript !== undefined) {
+
+                            if (isExon(f.type)) {
+                                if (parents.length > 1) {
+                                    // Make a copy as exon can be modified differently by CDS, etc, for each transcript
+                                    const e2 = new GFFFeature(f);
+                                    transcript.addExon(e2);
+                                } else {
+                                    transcript.addExon(f);
+                                }
+                            } else {
+                                transcript.addPart(f);
+                            }
+                            consumedFeatures.add(f);
+                        }
+                    }
+                }
+            }
+        }
+
+        // Finish transcripts
+        combinedFeatures.forEach(function (f) {
+            if (typeof f.finish === "function") {
+                f.finish();
+            }
+        });
+
+        // Add other features
+        const others = features.filter(f => !consumedFeatures.has(f));
+        for (let f of others) {
+            combinedFeatures.push(f);
+        }
+
+        return combinedFeatures
+
+        function getParents(f) {
+            if (f.parent && f.parent.trim() !== "") {
+                return f.parent.trim().split(",")
+            } else {
+                return null
+            }
+        }
+    }
+
+    numberExons(features, genomicInterval) {
+
+        for (let f of features) {
+            if (f.exons &&
+                (!genomicInterval ||
+                    (f.end <= genomicInterval.end && f.start > genomicInterval.start))) {
+                for (let i = 0; i < f.exons.length; i++) {
+                    const exon = f.exons[i];
+                    exon.number = f.strand === "-" ? f.exons.length - i : i + 1;
+                }
+            }
+        }
+    }
+
+    nameFeatures(features) {
+        // Find name (label) property
+        for (let f of features) {
+            if (f.attributeString) {
+                const delim = ('gff3' === this.format) ? '=' : ' ';
+                const attributes = parseAttributeString(f.attributeString, delim);
+                const attributesMap = new Map(attributes);
+                if (this.nameField) {
+                    f.name = attributesMap.get(this.nameField);
+                } else {
+                    for (let nameField of gffNameFields) {
+                        if (attributesMap.has(nameField)) {
+                            f.name = attributesMap.get(nameField);
+                            break
+                        }
+                    }
+                }
+            }
+        }
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2015 UC San Diego
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const GtexReader = function (config) {
+
+    this.config = config;
+    this.url = config.url;
+    this.tissueId = config.tissueSiteDetailId;
+    this.indexed = true;
+    this.datasetId = config.datasetId || "gtex_v8";
+};
+
+GtexReader.prototype.readFeatures = async function (chr, bpStart, bpEnd) {
+
+
+    let self = this,
+        queryChr = chr.startsWith("chr") ? chr : "chr" + chr,
+        queryStart = Math.floor(bpStart),
+        queryEnd = Math.ceil(bpEnd),
+        datasetId = this.datasetId,
+        queryURL = this.url + "?chromosome=" + queryChr + "&start=" + queryStart + "&end=" + queryEnd +
+            "&tissueSiteDetailId=" + this.tissueId + "&datasetId=" + datasetId;
+
+    const json = await igvxhr.loadJson(queryURL, {
+        withCredentials: self.config.withCredentials
+    });
+    if (json && json.singleTissueEqtl) {
+        //variants = json.variants;
+        //variants.sort(function (a, b) {
+        //    return a.POS - b.POS;
+        //});
+        //source.cache = new FeatureCache(chr, queryStart, queryEnd, variants);
+
+        json.singleTissueEqtl.forEach(function (eqtl) {
+            eqtl.chr = eqtl.chromosome;
+            eqtl.position = eqtl.pos;
+            eqtl.start = eqtl.pos - 1;
+            eqtl.end = eqtl.start + 1;
+            eqtl.snp = eqtl.snpId;
+            eqtl.geneName = eqtl.geneSymbol;
+            eqtl.geneId = eqtl.gencodeId;
+
+        });
+
+        return json.singleTissueEqtl
+    } else {
+        return undefined
+    }
+};
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+// Experimental class for fetching features from an mpg webservice.
+// http://immvar.broadinstitute.org:3000/load_data?chromosome=&start=&end=&categories=
+
+const ImmVarReader = function (config) {
+
+    this.config = config;
+    this.url = config.url;
+    this.cellConditionId = config.cellConditionId;
+    this.valueThreshold = config.valueThreshold ? config.valueThreshold : 5E-2;
+
+};
+
+ImmVarReader.prototype.readFeatures = function (queryChr, queryStart, queryEnd) {
+
+    var self = this,
+        queryURL = this.url + "?chromosome=" + queryChr + "&start=" + queryStart + "&end=" + queryEnd +
+            "&cell_condition_id=" + this.cellConditionId;
+
+    return new Promise(function (fulfill, reject) {
+        igvxhr.loadJson(queryURL, {
+            withCredentials: self.config.withCredentials
+        }).then(function (json) {
+
+            if (json) {
+                //variants = json.variants;
+                //variants.sort(function (a, b) {
+                //    return a.POS - b.POS;
+                //});
+                //source.cache = new FeatureCache(chr, queryStart, queryEnd, variants);
+
+                json.eqtls.forEach(function (eqtl) {
+                    eqtl.chr = eqtl.chromosome;
+                    eqtl.start = eqtl.position;
+                    eqtl.end = eqtl.position + 1;
+                });
+
+                fulfill(json.eqtls);
+            } else {
+                fulfill(null);
+            }
+
+        }).catch(function (error) {
+            reject(error);
+        });
+
+    })
+};
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const apiKey = igvxhr.apiKey;
+
+function ga4ghGet(options) {
+    var url = options.url + "/" + options.entity + "/" + options.entityId;
+    options.headers = ga4ghHeaders();
+    return igvxhr.loadJson(url, options)      // Returns a promise
+}
+
+function ga4ghSearch(options) {
+
+    return new Promise(function (fulfill, reject) {
+        var results = options.results ? options.results : [],
+            url = options.url,
+            body = options.body,
+            decode = options.decode,
+            paramSeparator = "?",
+            fields = options.fields;  // Partial response
+
+
+        if (apiKey) {
+            url = url + paramSeparator + "key=" + apiKey;
+            paramSeparator = "&";
+        }
+
+        if (fields) {
+            url = url + paramSeparator + "fields=" + fields;
+        }
+
+
+        // Start the recursive load cycle.  Data is fetched in chunks, if more data is available a "nextPageToken" is returned.
+        return loadChunk()
+
+        function loadChunk(pageToken) {
+
+            if (pageToken) {
+                body.pageToken = pageToken;
+            } else {
+                if (body.pageToken !== undefined) delete body.pageToken;    // Remove previous page token, if any
+            }
+
+            var sendData = JSON.stringify(body);
+
+            igvxhr.loadJson(url, {
+                sendData: sendData,
+                contentType: "application/json",
+                headers: ga4ghHeaders(),
+                //    oauthToken: ga4ghToken()
+            })
+                .then(function (json) {
+                    var nextPageToken, tmp;
+
+                    if (json) {
+
+                        tmp = decode ? decode(json) : json;
+
+                        if (tmp) {
+
+                            tmp.forEach(function (a) {
+                                {
+                                    results.push(a);
+                                }
+                            });
+                        }
+
+
+                        nextPageToken = json["nextPageToken"];
+
+                        if (nextPageToken) {
+                            loadChunk(nextPageToken);
+                        } else {
+                            fulfill(results);
+                        }
+                    } else {
+                        fulfill(results);
+                    }
+
+                })
+                .catch(function (error) {
+                    reject(error);
+                });
+        }
+
+    })
+
+
+}
+
+function ga4ghHeaders() {
+    return {
+        "Cache-Control": "no-cache"
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const Ga4ghVariantReader = function (config, genome) {
+
+    this.config = config;
+    this.genome = genome;
+    this.url = config.url;
+    this.variantSetId = config.variantSetId;
+    this.callSetIds = config.callSetIds;
+    this.includeCalls = (config.includeCalls === undefined ? true : config.includeCalls);
+
+};
+
+// Simulate a VCF file header
+Ga4ghVariantReader.prototype.readHeader = function () {
+
+    var self = this;
+
+
+    if (self.header) {
+        return Promise.resolve(self.header)
+    } else {
+
+        self.header = {};
+
+        if (self.includeCalls === false) {
+            return Promise.resolve(self.header)
+        } else {
+
+            var readURL = self.url + "/callsets/search";
+
+            return ga4ghSearch({
+                url: readURL,
+                fields: "nextPageToken,callSets(id,name)",
+                body: {
+                    "variantSetIds": (Array.isArray(self.variantSetId) ? self.variantSetId : [self.variantSetId]),
+                    "pageSize": "10000"
+                },
+                decode: function (json) {
+                    // If specific callSetIds are specified filter to those
+                    if (self.callSetIds) {
+                        var callSets = [],
+                            csIdSet = new Set();
+
+                        self.callSetIds.forEach(function (csid) {
+                            csIdSet.add(csid);
+                        });
+
+                        json.callSets.forEach(function (cs) {
+                            if (csIdSet.has(cs.id)) {
+                                callSets.push(cs);
+                            }
+                        });
+                        return callSets
+                    } else {
+                        return json.callSets
+                    }
+                }
+            })
+                .then(function (callSets) {
+                    self.header.callSets = callSets;
+                    return self.header
+                })
+        }
+    }
+};
+
+
+Ga4ghVariantReader.prototype.readFeatures = function (chr, bpStart, bpEnd) {
+
+    const self = this;
+    const genome = this.genome;
+
+    return self.readHeader()
+
+        .then(function (header) {
+            return getChrAliasTable()
+        })
+
+        .then(function (chrAliasTable) {
+
+            var queryChr = chrAliasTable.hasOwnProperty(chr) ? chrAliasTable[chr] : chr,
+                readURL = self.url + "/variants/search";
+
+            return ga4ghSearch({
+                url: readURL,
+                fields: (self.includeCalls ? undefined : "nextPageToken,variants(id,variantSetId,names,referenceName,start,end,referenceBases,alternateBases,quality,filter,info)"),
+                body: {
+                    "variantSetIds": (Array.isArray(self.variantSetId) ? self.variantSetId : [self.variantSetId]),
+                    "callSetIds": (self.callSetIds ? self.callSetIds : undefined),
+                    "referenceName": queryChr,
+                    "start": bpStart.toString(),
+                    "end": bpEnd.toString(),
+                    "pageSize": "10000"
+                },
+                decode: function (json) {
+
+                    var v;
+
+                    var variants = [];
+
+                    json.variants.forEach(function (json) {
+
+                        v = createGAVariant(json);
+
+                        if (!v.isRefBlock()) {
+                            variants.push(v);
+                        }
+                    });
+
+                    return variants
+                }
+            })
+        })
+
+
+    function getChrAliasTable() {
+
+        return new Promise(function (fulfill, reject) {
+
+            if (self.chrAliasTable) {
+                fulfill(self.chrAliasTable);
+            } else {
+                self.readMetadata().then(function (json) {
+
+                    self.metadata = json.metadata;
+                    self.chrAliasTable = {};
+
+                    if (json.referenceBounds && genome) {
+
+                        json.referenceBounds.forEach(function (rb) {
+                            var refName = rb.referenceName,
+                                alias = genome.getChromosomeName(refName);
+                            self.chrAliasTable[alias] = refName;
+
+                        });
+                    }
+                    fulfill(self.chrAliasTable);
+
+                });
+            }
+
+        })
+    }
+
+};
+
+
+Ga4ghVariantReader.prototype.readMetadata = function () {
+
+    return ga4ghGet({
+        url: this.url,
+        entity: "variantsets",
+        entityId: this.variantSetId
+    })
+};
+
+class CivicReader {
+
+    constructor(config) {
+        this.config = config;
+    }
+
+    async readFeatures(chr, start, end) {
+
+        const json = await igvxhr.loadJson(this.config.url + "/variants/?count=50000");
+        const records = json.records;
+        const features = [];
+
+        for (let record of records) {
+
+            if (record.coordinates) {
+
+                record.id;
+                const coordinates = record.coordinates;
+
+                if (coordinates.chromosome) {
+                    features.push(
+                        new CivicVariant(
+                            coordinates.chromosome,
+                            coordinates.start - 1,     // UCSC 0 convention
+                            coordinates.stop,
+                            record
+                        ));
+                }
+
+                if (coordinates.chromosome2) {
+                    features.push(
+                        new CivicVariant(
+                            coordinates.chromosome2,
+                            coordinates.start2 - 1,     // UCSC 0 convention
+                            coordinates.stop2,
+                            record
+                        ));
+                }
+            }
+
+        }
+        return features
+
+    }
+}
+
+class CivicVariant {
+
+    constructor(chr, start, end, record) {
+        this.chr = chr;
+        this.start = start;
+        this.end = end;
+        this.id = record.id;
+        this.entrezName = record.entrez_name;
+        this.name = record.name;
+        this.actionabilityScore = record.civic_actionability_score;
+
+        if (record.coordinates.reference_bases) {
+            this.refBases = record.coordinates.reference_bases;
+        }
+        if (record.coordinates.variant_bases) {
+            this.altBases = record.coordinates.variant_bases;
+        }
+        if (record.variant_types) {
+            this.variant_types = record.variant_types;
+        }
+
+        this.locationString = (this.chr + ":" +
+            numberFormatter$1(this.start + 1) + "-" +
+            numberFormatter$1(this.end));
+
+        // Color based on actionability score
+        if (this.actionabilityScore !== undefined) {
+            let alpha;
+            if (this.actionabilityScore <= 10) {
+                alpha = 0.2;
+            } else {
+                const v = Math.min(30, this.actionabilityScore);
+                alpha = 0.2 + 0.8 * Math.log10((v - 10) / 2);
+            }
+            this.alpha = alpha;
+        }
+
+
+    }
+
+    popupData() {
+
+
+        const link = createLink("CIViC", "https://civicdb.org/links/variants/" + this.id);
+        this.refBases !== this.altBases &&
+            this.refBases && this.refBases.length === 1 &&
+            this.altBases && this.altBases.length === 1;
+
+
+        const pd = [link];
+        pd.push({
+            name: "Entrez",
+            value: createLink(this.entrezName, "https://ghr.nlm.nih.gov/gene/" + this.entrezName)
+        });
+        pd.push({name: "Name", value: this.name});
+
+        if (this.variant_types && this.variant_types.length > 0) {
+
+            const name = this.variant_types.length === 1 ? "Type" : "Types";
+            let typeString;
+            for (let vt of this.variant_types) {
+                if (!typeString) typeString = vt.display_name;
+                else typeString += ", " + vt.display_name;
+            }
+
+            pd.push({name: name, value: typeString});
+        }
+
+        pd.push({name: "Actionability", value: this.actionabilityScore});
+
+
+        pd.push({name: "Location", value: this.locationString});
+
+        return pd
+
+
+        function createLink(text, href) {
+            return "<a target='_blank' " + "href='" + href + "'>" + text + "</a>"
+        }
+
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2017 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class HtsgetReader {
+
+    constructor(config, genome) {
+        this.config = config;
+        this.genome = genome;
+        this.format = config.format ? config.format.toUpperCase() : "BAM";    // Backward compatibility
+        if (!(this.format === "BAM" || this.format === "VCF")) {
+            throw  Error(`htsget format ${config.format} is not supported`)
+        }
+    }
+
+    async readHeaderData() {
+        const url = `${getUrl(this.config)}?class=header&format=${this.format}`;
+        const ticket = await igvxhr.loadJson(url, buildOptions(this.config));
+        return await this.loadUrls(ticket.htsget.urls)
+    }
+
+    async readData(chr, start, end) {
+        const url = `${getUrl(this.config)}?format=${this.format}&referenceName=${chr}&start=${Math.floor(start)}&end=${Math.ceil(end)}`;
+        const ticket = await igvxhr.loadJson(url, buildOptions(this.config));
+        return this.loadUrls(ticket.htsget.urls)
+    }
+
+    async loadUrls(urls) {
+
+        const promiseArray = [];
+        for (let urlData of urls) {
+
+            if (urlData.url.startsWith('data:')) {
+                // this is a data-uri
+                promiseArray.push(Promise.resolve(dataUriToBytes(urlData.url)));
+
+            } else {
+
+                const options = buildOptions(this.config || {});
+
+                if (urlData.headers) {
+                    options.headers = Object.assign(options.headers || {}, urlData.headers);
+                }
+
+                promiseArray.push(igvxhr.loadArrayBuffer(urlData.url, options));
+            }
+        }
+        const arrayBuffers = await Promise.all(promiseArray);
+        return concatArrays(arrayBuffers)
+    }
+
+
+    static async inferFormat(config) {
+        try {
+            const url = getUrl(config);
+            const headerURL = `${url}${url.includes("?") ? "&" : "?"}class=header`;
+            const ticket = await igvxhr.loadJson(headerURL, buildOptions(config));
+            if (ticket.htsget) {
+                const format = ticket.htsget.format;
+                if (!(format === "BAM" || format === "VCF")) {
+                    throw  Error(`htsget format ${format} is not supported`)
+                }
+                config.format = format.toLowerCase();
+                config.sourceType = "htsget";
+                if (!config.name) {
+                    config.name = await getFilename$1(config.url);
+                }
+            }
+        } catch (e) {
+            // Errors => this is not an htsget source, not an application error.  Ignore
+        }
+    }
+}
+
+/**
+ * Extract the full url from the config.  Striving for backward compatibility, "endpoint" and "id" are deprecated.
+ *
+ * @param config
+ */
+function getUrl(config) {
+    if (config.url && config.endpoint && config.id) {
+        return config.url + config.endpoint + config.id    // Deprecated
+    } else if (config.endpoint && config.id) {
+        return config.endpoint + config.id                // Deprecated
+    } else if (config.url) {
+        if (config.url.startsWith("htsget://")) {
+            return config.url.replace("htsget://", "https://")    // htsget -> http not supported
+        } else {
+            return config.url
+        }
+    } else {
+        throw Error("Must specify either 'url', or 'endpoint' and 'id")
+    }
+
+
+}
+
+/**
+ * Concatenate a list of array buffers, returning an UInt8Array
+ * @param arrayBuffers
+ */
+function concatArrays(arrayBuffers) {
+
+    let len = 0;
+    for (let a of arrayBuffers) {
+        len += a.byteLength;
+    }
+
+    let offset = 0;
+    const newArray = new Uint8Array(len);
+    for (let buf of arrayBuffers) {
+        const a = new Uint8Array(buf);
+        newArray.set(a, offset);
+        offset += a.length;
+    }
+
+    return newArray
+}
+
+function dataUriToBytes(dataUri) {
+
+    const split = dataUri.split(',');
+    const info = split[0].split(':')[1];
+    let dataString = split[1];
+
+    if (info.indexOf('base64') >= 0) {
+        dataString = atob(dataString);
+    } else {
+        dataString = decodeURI(dataString);
+    }
+
+    const bytes = new Uint8Array(dataString.length);
+    for (var i = 0; i < dataString.length; i++) {
+        bytes[i] = dataString.charCodeAt(i);
+    }
+
+    return bytes
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2017 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class HtsgetVariantReader extends HtsgetReader {
+
+    constructor(config, genome) {
+        super(config, genome);
+        this.parser = new VcfParser();
+    }
+
+    async readHeader() {
+        if (!this.header) {
+            const data = await this.readHeaderData();
+            const dataWrapper = getDataWrapper(data);
+            this.header = await this.parser.parseHeader(dataWrapper, this.genome);
+            this.chrAliasTable = this.header.chrAliasTable;
+        }
+        return this.header
+    }
+
+    async readFeatures(chr, start, end) {
+
+        if (this.config.format && this.config.format.toUpperCase() !== "VCF") {
+            throw  Error(`htsget format ${this.config.format} is not supported`)
+        }
+
+        if (!this.chrAliasTable) {
+            await this.readHeader();
+        }
+
+        let queryChr = this.chrAliasTable.has(chr) ? this.chrAliasTable.get(chr) : chr;
+
+        const data = await this.readData(queryChr, start, end);
+
+        const dataWrapper = getDataWrapper(data);
+
+        return this.parser.parseFeatures(dataWrapper)
+
+        //  return dataWrapper;
+
+    }
+
+}
+
+// Assigns a row # to each feature.  If the feature does not fit in any row and #rows == maxRows no
+// row number is assigned.
+function pack(featureList, maxRows) {
+
+    maxRows = maxRows || Number.MAX_SAFE_INTEGER;
+    const rows = [];
+    featureList.sort(function (a, b) {
+        return a.start - b.start
+    });
+    rows.push(-1000);
+
+    for (let feature of featureList) {
+        let r = 0;
+        const len = Math.min(rows.length, maxRows);
+        for (r = 0; r < len; r++) {
+            if (feature.start >= rows[r]) {
+                feature.row = r;
+                rows[r] = feature.end;
+                break
+            }
+        }
+        feature.row = r;
+        rows[r] = feature.end;
+    }
+}
+
+const DEFAULT_MAX_WG_COUNT$1 = 10000;
+
+/**
+ * Return a collection of "whole genome" features wrapping the supplied features, possibly downsampled.  The purpose
+ * is to support painting features in "whole genome view".
+ *
+ * @param allFeatures - dictionary (object), keys are chromosome names, values are lists of features
+ * @param genome
+ * @param maxWGCount - optional, maximum # of whole genome features to computer
+ * @returns {*[]}
+ */
+function computeWGFeatures(allFeatures, genome, maxWGCount) {
+
+    const max = maxWGCount || DEFAULT_MAX_WG_COUNT$1;
+
+    const makeWGFeature = (f) => {
+        const wg = Object.assign({}, f);
+        wg.chr = "all";
+        wg.start = genome.getGenomeCoordinate(f.chr, f.start);
+        wg.end = genome.getGenomeCoordinate(f.chr, f.end);
+        wg._f = f;
+        // Don't draw exons in whole genome view
+        if (wg["exons"]) delete wg["exons"];
+        return wg
+    };
+
+    const wgChromosomeNames = new Set(genome.wgChromosomeNames);
+    const wgFeatures = [];
+    let count = 0;
+    for (let c of genome.wgChromosomeNames) {
+
+        if(Array.isArray(allFeatures)) {
+            const featureDict = {};
+            for(let f of allFeatures) {
+                const chr = genome.getChromosomeName(f.chr);
+                if(!featureDict.hasOwnProperty(chr)) {
+                    featureDict[chr] = [];
+                }
+                featureDict[chr].push(f);
+            }
+            allFeatures = featureDict;
+        }
+
+        const features = allFeatures[c];
+
+        if (features) {
+            for (let f of features) {
+                let queryChr = genome.getChromosomeName(f.chr);
+                if (wgChromosomeNames.has(queryChr)) {
+                    if (wgFeatures.length < max) {
+                        wgFeatures.push(makeWGFeature(f));
+                    } else {
+                        //Reservoir sampling
+                        const samplingProb = max / (count + 1);
+                        if (Math.random() < samplingProb) {
+                            const idx = Math.floor(Math.random() * (max - 1));
+                            wgFeatures[idx] = makeWGFeature(f);
+                        }
+                    }
+                }
+                count++;
+            }
+        }
+    }
+
+    wgFeatures.sort(function (a, b) {
+        return a.start - b.start
+    });
+
+    return wgFeatures
+}
+
+function packFeatures(features, maxRows) {
+
+    maxRows = maxRows || 1000;
+    if (features == null || features.length === 0) {
+        return
+    }
+    // Segregate by chromosome
+    const chrFeatureMap = {};
+    const chrs = [];
+    for (let feature of features) {
+        const chr = feature.chr;
+        let flist = chrFeatureMap[chr];
+        if (!flist) {
+            flist = [];
+            chrFeatureMap[chr] = flist;
+            chrs.push(chr);
+        }
+        flist.push(feature);
+    }
+
+    // Loop through chrosomosomes and pack features;
+    for (let chr of chrs) {
+        pack(chrFeatureMap[chr], maxRows);
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014-2015 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const DEFAULT_MAX_WG_COUNT = 10000;
+
+/**
+ * feature source for "bed like" files (tab or whitespace delimited files with 1 feature per line: bed, gff, vcf, etc)
+ *
+ * @param config
+ * @constructor
+ */
+class TextFeatureSource {
+
+    constructor(config, genome) {
+
+        this.config = config || {};
+        this.genome = genome;
+        this.sourceType = (config.sourceType === undefined ? "file" : config.sourceType);
+        this.maxWGCount = config.maxWGCount || DEFAULT_MAX_WG_COUNT;
+
+        const queryableFormats = new Set(["bigwig", "bw", "bigbed", "bb", "biginteract", "biggenepred", "bignarrowpeak", "tdf"]);
+
+        this.queryable = config.indexURL || config.queryable === true;   // False by default, unless explicitly set
+        if (config.reader) {
+            // Explicit reader implementation
+            this.reader = config.reader;
+            this.queryable = config.queryable !== false;
+        } else if (config.sourceType === "ga4gh") {
+            this.reader = new Ga4ghVariantReader(config, genome);
+            this.queryable = true;
+        } else if (config.sourceType === "immvar") {
+            this.reader = new ImmVarReader(config);
+            this.queryable = true;
+        } else if (config.type === "eqtl" && config.sourceType === "gtex-ws") {
+            this.reader = new GtexReader(config);
+            this.queryable = true;
+        } else if ("htsget" === config.sourceType) {
+            this.reader = new HtsgetVariantReader(config, genome);
+            this.queryable = true;
+        } else if (config.sourceType === 'ucscservice') {
+            this.reader = new UCSCServiceReader(config.source);
+            this.queryable = true;
+        } else if (config.sourceType === 'custom') {
+            this.reader = new CustomServiceReader(config.source);
+            this.queryable = false !== config.source.queryable;
+        } else if ("civic-ws" === config.sourceType) {
+            this.reader = new CivicReader(config);
+            this.queryable = false;
+        } else {
+            // File of some type (i.e. not a webservice)
+            this.reader = new FeatureFileReader(config, genome);
+            if (config.queryable !== undefined) {
+                this.queryable = config.queryable;
+            } else if (queryableFormats.has(config.format) || this.reader.indexed) {
+                this.queryable = true;
+            } else ;
+        }
+
+        // Set  searchable unless explicitly turned off, or track uses in indexed or otherwise queryable
+        // feature source.  queryable => features loaded on demand (by query)
+        this.searchable = config.searchable === true || config.searchableFields || (config.searchable !== false && !this.queryable);
+
+    }
+
+    async defaultVisibilityWindow() {
+        if (this.reader && typeof this.reader.defaultVisibilityWindow === 'function') {
+            return this.reader.defaultVisibilityWindow()
+        }
+    }
+
+    async trackType() {
+        const header = await this.getHeader();
+        if (header) {
+            return header.type
+        } else {
+            return undefined    // Convention for unknown or unspecified
+        }
+    }
+
+    async getHeader() {
+        if (!this.header) {
+
+            if (this.reader && typeof this.reader.readHeader === "function") {
+                const header = await this.reader.readHeader();
+                if (header) {
+                    this.header = header;
+                    if (header.format) {
+                        this.config.format = header.format;
+                    }
+                } else {
+                    this.header = {};
+                }
+            } else {
+                this.header = {};
+            }
+        }
+        return this.header
+    }
+
+    /**
+     * Required function for all data source objects.  Fetches features for the
+     * range requested.
+     *
+     * This function is quite complex due to the variety of reader types backing it, some indexed, some queryable,
+     * some not.
+     *
+     * @param chr
+     * @param start
+     * @param end
+     * @param bpPerPixel
+     */
+    async getFeatures({chr, start, end, bpPerPixel, visibilityWindow}) {
+
+        const genome = this.genome;
+        const queryChr = genome ? genome.getChromosomeName(chr) : chr;
+        const isWholeGenome = ("all" === queryChr.toLowerCase());
+
+        // Various conditions that can require a feature load
+        //   * view is "whole genome" but no features are loaded
+        //   * cache is disabled
+        //   * cache does not contain requested range
+       // const containsRange = this.featureCache.containsRange(new GenomicInterval(queryChr, start, end))
+        if ((isWholeGenome && !this.wgFeatures && this.supportsWholeGenome()) ||
+            this.config.disableCache ||
+            !this.featureCache ||
+            !this.featureCache.containsRange(new GenomicInterval(queryChr, start, end))) {
+            await this.loadFeatures(queryChr, start, end, visibilityWindow);
+        }
+
+        if (isWholeGenome) {
+            if (!this.wgFeatures) {
+                if (this.supportsWholeGenome()) {
+                    this.wgFeatures = computeWGFeatures(this.featureCache.getAllFeatures(), this.genome, this.maxWGCount);
+                } else {
+                    this.wgFeatures = [];
+                }
+            }
+            return this.wgFeatures
+        } else {
+            return this.featureCache.queryFeatures(queryChr, start, end)
+        }
+    }
+
+    supportsWholeGenome() {
+        return !this.queryable   // queryable (indexed, web services) sources don't support whole genome view
+    }
+
+    // TODO -- experimental, will only work for non-indexed sources
+    getAllFeatures() {
+        if (this.queryable || !this.featureCache) {   // queryable sources don't support all features
+            return []
+        } else {
+            return this.featureCache.getAllFeatures()
+        }
+    }
+
+
+    async loadFeatures(queryChr, start, end, visibilityWindow) {
+
+        const reader = this.reader;
+        let intervalStart = start;
+        let intervalEnd = end;
+
+        // Use visibility window to potentially expand query interval.
+        // This can save re-queries as we zoom out.  Visibility window <= 0 is a special case
+        // indicating whole chromosome should be read at once.
+        if ((!visibilityWindow || visibilityWindow <= 0) && this.config.expandQuery !== false) {
+            // Whole chromosome
+            const chromosome = this.genome ? this.genome.getChromosome(queryChr) : undefined;
+            intervalStart = 0;
+            intervalEnd = Math.max(chromosome ? chromosome.bpLength : Number.MAX_SAFE_INTEGER, end);
+        } else if (visibilityWindow > (end - start) && this.config.expandQuery !== false) {
+            const expansionWindow = Math.min(4.1 * (end - start), visibilityWindow);
+            intervalStart = Math.max(0, (start + end) / 2 - expansionWindow);
+            intervalEnd = start + expansionWindow;
+        }
+
+        let features = await reader.readFeatures(queryChr, intervalStart, intervalEnd);
+        if (this.queryable === undefined) {
+            this.queryable = reader.indexed;
+        }
+
+        const genomicInterval = this.queryable ?
+            new GenomicInterval(queryChr, intervalStart, intervalEnd) :
+            undefined;
+
+        if (features) {
+
+            if (this.config.assembleGFF !== false &&
+                ("gtf" === this.config.format || "gff3" === this.config.format || "gff" === this.config.format)) {
+                features = (new GFFHelper(this.config)).combineFeatures(features, genomicInterval);
+            }
+
+            // Assign overlapping features to rows
+            if (this.config.format !== "wig" && this.config.type !== "junctions") {
+                const maxRows = this.config.maxRows || Number.MAX_SAFE_INTEGER;
+                packFeatures(features, maxRows);
+            }
+
+            // Note - replacing previous cache with new one.  genomicInterval is optional (might be undefined => includes all features)
+            this.featureCache = new FeatureCache$1(features, this.genome, genomicInterval);
+
+            // If track is marked "searchable"< cache features by name -- use this with caution, memory intensive
+            if (this.searchable) {
+                this.genome.addFeaturesToDB(features, this.config);
+            }
+        } else {
+            this.featureCache = new FeatureCache$1([], genomicInterval);     // Empty cache
+        }
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class BufferedReader {
+
+    constructor(config, contentLength, bufferSize) {
+        this.path = config.url;
+        this.bufferSize = bufferSize ? bufferSize : 512000;
+        this.range = {start: -1, size: -1};
+        this.config = config;
+    }
+
+    /**
+     *
+     * @param requestedRange - byte rangeas {start, size}
+     * @param fulfill - function to receive result
+     * @param asUint8 - optional flag to return result as an UInt8Array
+     */
+    async dataViewForRange(requestedRange, asUint8, retries = 0) {
+        try {
+
+            const hasData = (this.data && (this.range.start <= requestedRange.start) &&
+                ((this.range.start + this.range.size) >= (requestedRange.start + requestedRange.size)));
+
+            if (!hasData) {
+                let bufferSize;
+                // If requested range size is specified, potentially expand buffer size
+                if (requestedRange.size) {
+                    bufferSize = Math.max(this.bufferSize, requestedRange.size);
+                } else {
+                    bufferSize = this.bufferSize;
+                }
+                if (this.contentLength) {
+                    bufferSize = Math.min(bufferSize, this.contentLength - requestedRange.start);
+                }
+                const loadRange = {start: requestedRange.start, size: bufferSize};
+                const arrayBuffer = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {range: loadRange}));
+                this.data = arrayBuffer;
+                this.range = loadRange;
+            }
+
+            const len = this.data.byteLength;
+            const bufferStart = requestedRange.start - this.range.start;
+            return asUint8 ?
+                new Uint8Array(this.data, bufferStart, len - bufferStart) :
+                new DataView(this.data, bufferStart, len - bufferStart)
+        } catch (e) {
+            if (retries === 0 && e.message && e.message.startsWith("416")) {
+                try {
+                    this.contentLength = await igvxhr.getContentLength(this.path, buildOptions(this.config));
+                    return this.dataViewForRange(requestedRange, asUint8, ++retries)
+                } catch (e1) {
+                    console.error(e1);
+                }
+                throw e
+            }
+        }
+    }
+}
+
+function getDecoder(definedFieldCount, fieldCount, autoSql, format) {
+
+    if ("biginteract" === format || (autoSql && ('chromatinInteract' === autoSql.table) || 'interact' === autoSql.table)) {
+        return decodeInteract
+    } else {
+        const standardFieldCount = definedFieldCount - 3;
+        return function (feature, tokens) {
+
+            if (standardFieldCount > 0) {
+                feature.name = tokens[0];
+            }
+            if (standardFieldCount > 1) {
+                feature.score = Number(tokens[1]);
+            }
+            if (standardFieldCount > 2) {
+                feature.strand = tokens[2];
+            }
+            if (standardFieldCount > 3) {
+                feature.cdStart = parseInt(tokens[3]);
+            }
+            if (standardFieldCount > 4) {
+                feature.cdEnd = parseInt(tokens[4]);
+            }
+            if (standardFieldCount > 5) {
+                if (tokens[5] !== "." && tokens[5] !== "0" && tokens[5] !== "-1") {
+                    const c = IGVColor.createColorString(tokens[5]);
+                    feature.color = c.startsWith("rgb") ? c : undefined;
+                }
+            }
+            if (standardFieldCount > 8) {
+                const exonCount = parseInt(tokens[6]);
+                const exonSizes = tokens[7].split(',');
+                const exonStarts = tokens[8].split(',');
+                const exons = [];
+                for (let i = 0; i < exonCount; i++) {
+                    const eStart = feature.start + parseInt(exonStarts[i]);
+                    const eEnd = eStart + parseInt(exonSizes[i]);
+                    exons.push({start: eStart, end: eEnd});
+                }
+                findUTRs(exons, feature.cdStart, feature.cdEnd);
+                feature.exons = exons;
+            }
+
+            if (autoSql) {
+                // TODO -- these should be equal, validate?  fieldCount-definedFieldCount, as.fields.length, tokens.length-3
+                const extraStart = definedFieldCount;
+                for (let i = extraStart; i < fieldCount; i++) {
+                    if (i < autoSql.fields.length) {
+                        const name = autoSql.fields[i].name;
+                        const value = tokens[i - 3];
+                        feature[name] = value;
+                    }
+                }
+            }
+        }
+    }
+
+    //table chromatinInteract
+// "Chromatin interaction between two regions"
+//     (
+//     string chrom;      "Chromosome (or contig, scaffold, etc.). For interchromosomal, use 2 records"
+//     uint chromStart;   "Start position of lower region. For interchromosomal, set to chromStart of this region"
+//     uint chromEnd;     "End position of upper region. For interchromosomal, set to chromEnd of this region"
+//     string name;       "Name of item, for display"
+//     uint score;        "Score from 0-1000"
+//     double value;      "Strength of interaction or other data value. Typically basis for score"
+//     string exp;        "Experiment name (metadata for filtering). Use . if not applicable"
+//     string color;      "Item color.  Specified as r,g,b or hexadecimal #RRGGBB or html color name, as in //www.w3.org/TR/css3-color/#html4."
+//     string region1Chrom;  "Chromosome of lower region. For non-directional interchromosomal, chrom of this region."
+//     uint region1Start;  "Start position of lower/this region"
+//     uint region1End;    "End position in chromosome of lower/this region"
+//     string region1Name;  "Identifier of lower/this region"
+//     string region1Strand; "Orientation of lower/this region: + or -.  Use . if not applicable"
+//     string region2Chrom; "Chromosome of upper region. For non-directional interchromosomal, chrom of other region"
+//     uint region2Start;  "Start position in chromosome of upper/this region"
+//     uint region2End;    "End position in chromosome of upper/this region"
+//     string region2Name; "Identifier of upper/this region"
+//     string region2Strand; "Orientation of upper/this region: + or -.  Use . if not applicable"
+//     )
+    function decodeInteract(feature, tokens) {
+
+        feature.chr1 = tokens[5];
+        feature.start1 = Number.parseInt(tokens[6]);
+        feature.end1 = Number.parseInt(tokens[7]);
+
+        feature.chr2 = tokens[10];
+        feature.start2 = Number.parseInt(tokens[11]);
+        feature.end2 = Number.parseInt(tokens[12]);
+
+        feature.name = tokens[0];
+        feature.score = Number(tokens[1]);
+        feature.value = Number(tokens[2]);
+        feature.color = tokens[4] === '.' ? undefined : tokens[4] === "0" ? "rgb(0,0,0)" : tokens[4];
+
+        return feature
+    }
+}
+
+function findUTRs(exons, cdStart, cdEnd) {
+
+    for (let exon of exons) {
+        const end = exon.end;
+        const start = exon.start;
+        if (end < cdStart || start > cdEnd) {
+            exon.utr = true;
+        } else {
+            if (cdStart >= start && cdStart <= end) {
+                exon.cdStart = cdStart;
+            }
+            if (cdEnd >= start && cdEnd <= end) {
+                exon.cdEnd = cdEnd;
+            }
+        }
+    }
+}
+
+function scoreShade(score, color) {
+    const alpha = Math.min(1, 0.11 + 0.89 * (score / 779));
+    return alpha.toString()
+}
+
+function parseAutoSQL(str) {
+
+    let table;
+    const fields = [];
+    let startDecoding = false;
+    const lines = str.trim().split(/\s*[\r\n]+\s*/g);
+    for (let line of lines) {
+        if (line.startsWith('table')) {
+            table = line.split(/\s+/)[1].trim();
+        } else if (line.startsWith('(')) {
+            startDecoding = true;
+        } else if (line.startsWith(')')) ; else if (startDecoding) {
+            if (line.length > 0) {
+                const idx = line.indexOf(';');
+                const tokens = line.substr(0, idx).split(/\s+/);
+                const description = line.substr(idx + 1).replace(/"/g, '').trim();
+                fields.push({
+                    type: tokens[0],
+                    name: tokens[1],
+                    description: description
+                });
+            }
+        }
+    }
+    return {
+        table: table,
+        fields: fields
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+let BIGWIG_MAGIC_LTH = 0x888FFC26; // BigWig Magic Low to High
+let BIGWIG_MAGIC_HTL = 0x26FC8F66; // BigWig Magic High to Low
+let BIGBED_MAGIC_LTH = 0x8789F2EB; // BigBed Magic Low to High
+let BIGBED_MAGIC_HTL = 0xEBF28987; // BigBed Magic High to Low
+let BBFILE_HEADER_SIZE = 64;
+let RPTREE_HEADER_SIZE = 48;
+let RPTREE_NODE_LEAF_ITEM_SIZE = 32;   // leaf item size
+let RPTREE_NODE_CHILD_ITEM_SIZE = 24;  // child item size
+let BUFFER_SIZE = 512000;     //  buffer
+
+class BWReader {
+
+    constructor(config, genome) {
+        this.path = config.url;
+        this.format = config.format || "bigwig";
+        this.genome = genome;
+        this.rpTreeCache = {};
+        this.config = config;
+        this.loader = isDataURL(this.path) ? new DataBuffer(this.path) : igvxhr;
+    }
+
+    async readWGFeatures(bpPerPixel, windowFunction) {
+        await this.loadHeader();
+        const chrIdx1 = 0;
+        const chrIdx2 = this.chromTree.idToChrom.length - 1;
+        const chr1 = this.chromTree.idToChrom[chrIdx1];
+        const chr2 = this.chromTree.idToChrom[chrIdx2];
+        return this.readFeatures(chr1, 0, chr2, Number.MAX_VALUE, bpPerPixel, windowFunction)
+    }
+
+    async readFeatures(chr1, bpStart, chr2, bpEnd, bpPerPixel, windowFunction) {
+
+        await this.loadHeader();
+        const chrIdx1 = this.chromTree.chromToID[chr1];
+        const chrIdx2 = this.chromTree.chromToID[chr2];
+        if (chrIdx1 === undefined || chrIdx2 === undefined) {
+            return []
+        }
+
+        let treeOffset;
+        let decodeFunction;
+        if (this.type === "bigwig") {
+            // Select a biwig "zoom level" appropriate for the current resolution.
+            const zoomLevelHeaders = await this.getZoomHeaders();
+            let zoomLevelHeader = bpPerPixel ? zoomLevelForScale$1(bpPerPixel, zoomLevelHeaders) : undefined;
+            if (zoomLevelHeader) {
+                treeOffset = zoomLevelHeader.indexOffset;
+                decodeFunction = decodeZoomData;
+            } else {
+                treeOffset = this.header.fullIndexOffset;
+                decodeFunction = decodeWigData;
+            }
+        } else {
+            // bigbed, zoom data is not currently used in igv for bed type features
+            treeOffset = this.header.fullIndexOffset;
+            decodeFunction = getBedDataDecoder.call(this);
+        }
+
+
+        // Load the R Tree and fine leaf items
+        const rpTree = await this.loadRPTree(treeOffset);
+        const leafItems = await rpTree.findLeafItemsOverlapping(chrIdx1, bpStart, chrIdx2, bpEnd);
+        if (!leafItems || leafItems.length === 0) {
+            return []
+        } else {
+
+            // Consolidate leaf items and get all data at once
+            let start = Number.MAX_VALUE;
+            let end = 0;
+            for (let item of leafItems) {
+                start = Math.min(start, item.dataOffset);
+                end = Math.max(end, item.dataOffset + item.dataSize);
+            }
+            const size = end - start;
+            const arrayBuffer = await this.loader.loadArrayBuffer(this.config.url, buildOptions(this.config, {
+                range: {
+                    start: start,
+                    size: size
+                }
+            }));
+
+            // Parse data and return features
+            const allFeatures = [];
+            for (let item of leafItems) {
+                const uint8Array = new Uint8Array(arrayBuffer, item.dataOffset - start, item.dataSize);
+                let plain;
+                const isCompressed = this.header.uncompressBuffSize > 0;
+                if (isCompressed) {
+                    plain = inflate_1$3(uint8Array);
+                } else {
+                    plain = uint8Array;
+                }
+                decodeFunction.call(this, new DataView(plain.buffer), chrIdx1, bpStart, chrIdx2, bpEnd, allFeatures, this.chromTree.idToChrom, windowFunction);
+            }
+
+            allFeatures.sort(function (a, b) {
+                return a.start - b.start
+            });
+
+            return allFeatures
+        }
+    }
+
+    async getZoomHeaders() {
+        if (this.zoomLevelHeaders) {
+            return this.zoomLevelHeaders
+        } else {
+            await this.loadHeader();
+            return this.zoomLevelHeaders
+        }
+    }
+
+    async loadHeader() {
+
+        if (this.header) {
+            return this.header
+        } else {
+            let data = await this.loader.loadArrayBuffer(this.path, buildOptions(this.config, {
+                range: {
+                    start: 0,
+                    size: BBFILE_HEADER_SIZE
+                }
+            }));
+
+            let header;
+
+            // Assume low-to-high unless proven otherwise
+            this.littleEndian = true;
+
+            let binaryParser = new BinaryParser(new DataView(data));
+            let magic = binaryParser.getUInt();
+            if (magic === BIGWIG_MAGIC_LTH) {
+                this.type = "bigwig";
+            } else if (magic === BIGBED_MAGIC_LTH) {
+                this.type = "bigbed";
+            } else {
+                //Try big endian order
+                this.littleEndian = false;
+
+                binaryParser.littleEndian = false;
+                binaryParser.position = 0;
+                let magic = binaryParser.getUInt();
+
+                if (magic === BIGWIG_MAGIC_HTL) {
+                    this.type = "bigwig";
+                } else if (magic === BIGBED_MAGIC_HTL) {
+                    this.type = "bigbed";
+                } else ;
+            }
+            // Table 5  "Common header for bigwig and bigbed files"
+            header = {
+                bwVersion: binaryParser.getUShort(),
+                nZoomLevels: binaryParser.getUShort(),
+                chromTreeOffset: binaryParser.getLong(),
+                fullDataOffset: binaryParser.getLong(),
+                fullIndexOffset: binaryParser.getLong(),
+                fieldCount: binaryParser.getUShort(),
+                definedFieldCount: binaryParser.getUShort(),
+                autoSqlOffset: binaryParser.getLong(),
+                totalSummaryOffset: binaryParser.getLong(),
+                uncompressBuffSize: binaryParser.getInt(),
+                extensionOffset: binaryParser.getLong()
+            };
+
+            ///////////
+
+            const startOffset = BBFILE_HEADER_SIZE;
+            let range = {start: startOffset, size: (header.fullDataOffset - startOffset + 5)};
+            data = await this.loader.loadArrayBuffer(this.path, buildOptions(this.config, {range: range}));
+
+            const nZooms = header.nZoomLevels;
+            binaryParser = new BinaryParser(new DataView(data));
+
+            this.zoomLevelHeaders = [];
+            this.firstZoomDataOffset = Number.MAX_SAFE_INTEGER;
+            for (let i = 1; i <= nZooms; i++) {
+                const zoomNumber = nZooms - i;
+                const zlh = new ZoomLevelHeader(zoomNumber, binaryParser);
+                this.firstZoomDataOffset = Math.min(zlh.dataOffset, this.firstZoomDataOffset);
+                this.zoomLevelHeaders[zoomNumber] = zlh;
+            }
+
+            // Autosql
+            if (header.autoSqlOffset > 0) {
+                binaryParser.position = header.autoSqlOffset - startOffset;
+                const autoSqlString = binaryParser.getString();
+                if (autoSqlString) {
+                    this.autoSql = parseAutoSQL(autoSqlString);
+                }
+            }
+
+            // Total summary
+            if (header.totalSummaryOffset > 0) {
+                binaryParser.position = header.totalSummaryOffset - startOffset;
+                this.totalSummary = new BWTotalSummary(binaryParser);
+            }
+
+            // Chrom data index
+            if (header.chromTreeOffset > 0) {
+                binaryParser.position = header.chromTreeOffset - startOffset;
+                this.chromTree = new BPTree(binaryParser, startOffset, this.genome);
+            } else {
+                // TODO -- this is an error, not expected
+                throw "BigWig chromosome tree offset <= 0"
+            }
+
+            //Finally total data count
+            binaryParser.position = header.fullDataOffset - startOffset;
+            header.dataCount = binaryParser.getInt();
+            ///////////
+
+            this.setDefaultVisibilityWindow(header);
+
+            this.header = header;
+            return this.header
+
+        }
+    }
+
+    async loadRPTree(offset) {
+
+        let rpTree = this.rpTreeCache[offset];
+        if (rpTree) {
+            return rpTree
+        } else {
+            rpTree = new RPTree(offset, this.config, this.littleEndian, this.loader);
+            await rpTree.load();
+            this.rpTreeCache[offset] = rpTree;
+            return rpTree
+        }
+    }
+
+    async getType() {
+        await this.loadHeader();
+        return this.type
+    }
+
+    async getTrackType() {
+        await this.loadHeader();
+        if (this.type === "bigwig") {
+            return "wig"
+        } else {
+            return this.autoSql && this.autoSql.table === "chromatinInteract" ? "interact" : "annotation"
+        }
+    }
+
+    setDefaultVisibilityWindow(header) {
+        if (this.type === "bigwig") {
+            this.visibilityWindow = -1;
+        } else {
+            // bigbed
+            let genomeSize = this.genome ? this.genome.getGenomeLength() : 3088286401;
+            // Estimate window size to return ~ 1,000 features, assuming even distribution across the genome
+            this.visibilityWindow = header.dataCount < 1000 ? -1 : 1000 * (genomeSize / header.dataCount);
+
+        }
+    }
+}
+
+
+class ZoomLevelHeader {
+    constructor(index, byteBuffer) {
+        this.index = index;
+        this.reductionLevel = byteBuffer.getInt();
+        this.reserved = byteBuffer.getInt();
+        this.dataOffset = byteBuffer.getLong();
+        this.indexOffset = byteBuffer.getLong();
+    }
+}
+
+class RPTree {
+
+    constructor(fileOffset, config, littleEndian, loader) {
+
+        this.config = config;
+        this.loader = loader;
+        this.fileOffset = fileOffset; // File offset to beginning of tree
+        this.path = config.url;
+        this.littleEndian = littleEndian;
+    }
+
+    async load() {
+        const rootNodeOffset = this.fileOffset + RPTREE_HEADER_SIZE;
+        const bufferedReader = isDataURL(this.path) ?
+            this.loader :
+            new BufferedReader(this.config, BUFFER_SIZE);
+        this.rootNode = await this.readNode(rootNodeOffset, bufferedReader);
+        return this
+    }
+
+    async readNode(filePosition, bufferedReader) {
+
+        let dataView = await bufferedReader.dataViewForRange({start: filePosition, size: 4}, false);
+        let binaryParser = new BinaryParser(dataView, this.littleEndian);
+        const type = binaryParser.getByte();
+        const isLeaf = (type === 1);
+        binaryParser.getByte();
+        const count = binaryParser.getUShort();
+        filePosition += 4;
+
+        let bytesRequired = count * (isLeaf ? RPTREE_NODE_LEAF_ITEM_SIZE : RPTREE_NODE_CHILD_ITEM_SIZE);
+        let range2 = {start: filePosition, size: bytesRequired};
+        dataView = await bufferedReader.dataViewForRange(range2, false);
+        const items = new Array(count);
+        binaryParser = new BinaryParser(dataView);
+
+        if (isLeaf) {
+            for (let i = 0; i < count; i++) {
+                let item = {
+                    isLeaf: true,
+                    startChrom: binaryParser.getInt(),
+                    startBase: binaryParser.getInt(),
+                    endChrom: binaryParser.getInt(),
+                    endBase: binaryParser.getInt(),
+                    dataOffset: binaryParser.getLong(),
+                    dataSize: binaryParser.getLong()
+                };
+                items[i] = item;
+
+            }
+            return new RPTreeNode(items)
+        } else { // non-leaf
+            for (let i = 0; i < count; i++) {
+
+                let item = {
+                    isLeaf: false,
+                    startChrom: binaryParser.getInt(),
+                    startBase: binaryParser.getInt(),
+                    endChrom: binaryParser.getInt(),
+                    endBase: binaryParser.getInt(),
+                    childOffset: binaryParser.getLong()
+                };
+                items[i] = item;
+            }
+
+            return new RPTreeNode(items)
+        }
+
+    }
+
+    async findLeafItemsOverlapping(chrIdx1, startBase, chrIdx2, endBase) {
+
+        let self = this;
+
+        return new Promise(function (fulfill, reject) {
+
+            let leafItems = [],
+                processing = new Set(),
+                bufferedReader = isDataURL(self.path) ?
+                    self.loader :
+                    new BufferedReader(self.config, BUFFER_SIZE);
+
+            processing.add(0);  // Zero represents the root node
+            findLeafItems(self.rootNode, 0);
+
+            function findLeafItems(node, nodeId) {
+
+                if (overlaps(node, chrIdx1, startBase, chrIdx2, endBase)) {
+
+                    let items = node.items;
+
+                    items.forEach(function (item) {
+
+                        if (overlaps(item, chrIdx1, startBase, chrIdx2, endBase)) {
+
+                            if (item.isLeaf) {
+                                leafItems.push(item);
+                            } else {
+                                if (item.childNode) {
+                                    findLeafItems(item.childNode);
+                                } else {
+                                    processing.add(item.childOffset);  // Represent node to-be-loaded by its file position
+
+                                    self.readNode(item.childOffset, bufferedReader)
+                                        .then(function (node) {
+                                            item.childNode = node;
+                                            findLeafItems(node, item.childOffset);
+                                        })
+                                        .catch(reject);
+                                }
+                            }
+                        }
+                    });
+
+                }
+
+                if (nodeId !== undefined) processing.delete(nodeId);
+
+                // Wait until all nodes are processed
+                if (processing.size === 0) {
+                    fulfill(leafItems);
+                }
+            }
+        })
+    }
+}
+
+class RPTreeNode {
+
+    constructor(items) {
+
+        this.items = items;
+
+        let minChromId = Number.MAX_SAFE_INTEGER,
+            maxChromId = 0,
+            minStartBase = Number.MAX_SAFE_INTEGER,
+            maxEndBase = 0,
+            i,
+            item;
+
+        for (i = 0; i < items.length; i++) {
+            item = items[i];
+            minChromId = Math.min(minChromId, item.startChrom);
+            maxChromId = Math.max(maxChromId, item.endChrom);
+            minStartBase = Math.min(minStartBase, item.startBase);
+            maxEndBase = Math.max(maxEndBase, item.endBase);
+        }
+
+        this.startChrom = minChromId;
+        this.endChrom = maxChromId;
+        this.startBase = minStartBase;
+        this.endBase = maxEndBase;
+    }
+}
+
+class BPTree {
+
+    constructor(binaryParser, startOffset, genome) {
+
+        let magic = binaryParser.getInt();
+        let blockSize = binaryParser.getInt();
+        let keySize = binaryParser.getInt();
+        let valSize = binaryParser.getInt();
+        let itemCount = binaryParser.getLong();
+        let reserved = binaryParser.getLong();
+        let chromToId = {};
+        let idToChrom = [];
+
+        this.header = {
+            magic: magic,
+            blockSize: blockSize,
+            keySize: keySize,
+            valSize: valSize,
+            itemCount: itemCount,
+            reserved: reserved
+        };
+        this.chromToID = chromToId;
+        this.idToChrom = idToChrom;
+
+        // Recursively walk tree to populate dictionary
+        readTreeNode(binaryParser, -1);
+
+
+        function readTreeNode(byteBuffer, offset) {
+
+            if (offset >= 0) byteBuffer.position = offset;
+
+            let type = byteBuffer.getByte();
+                byteBuffer.getByte();
+                let count = byteBuffer.getUShort(),
+                i,
+                key,
+                chromId,
+                childOffset,
+                bufferOffset,
+                currOffset;
+
+
+            if (type === 1) {
+
+                for (i = 0; i < count; i++) {
+
+                    key = byteBuffer.getFixedLengthTrimmedString(keySize);
+                    chromId = byteBuffer.getInt();
+                    byteBuffer.getInt();
+
+                    if (genome) key = genome.getChromosomeName(key);  // Translate to canonical chr name
+                    chromToId[key] = chromId;
+                    idToChrom[chromId] = key;
+
+                }
+            } else { // non-leaf
+
+                for (i = 0; i < count; i++) {
+
+                    key = byteBuffer.getFixedLengthTrimmedString(keySize);
+                    childOffset = byteBuffer.getLong();
+                    bufferOffset = childOffset - startOffset;
+                    currOffset = byteBuffer.position;
+                    readTreeNode(byteBuffer, bufferOffset);
+                    byteBuffer.position = currOffset;
+                }
+            }
+
+        }
+    }
+}
+
+/**
+ * Return true if {chrIdx1:startBase-chrIdx2:endBase} overlaps item's interval
+ * @returns {boolean}
+ */
+function overlaps(item, chrIdx1, startBase, chrIdx2, endBase) {
+
+    if (!item) {
+        console.log("null item for " + chrIdx1 + " " + startBase + " " + endBase);
+        return false
+    }
+
+    return ((chrIdx2 > item.startChrom) || (chrIdx2 === item.startChrom && endBase >= item.startBase)) &&
+        ((chrIdx1 < item.endChrom) || (chrIdx1 === item.endChrom && startBase <= item.endBase))
+
+
+}
+
+class BWTotalSummary {
+
+    constructor(byteBuffer) {
+        if (byteBuffer) {
+            this.basesCovered = byteBuffer.getLong();
+            this.minVal = byteBuffer.getDouble();
+            this.maxVal = byteBuffer.getDouble();
+            this.sumData = byteBuffer.getDouble();
+            this.sumSquares = byteBuffer.getDouble();
+            computeStats.call(this);
+        } else {
+            this.basesCovered = 0;
+            this.minVal = 0;
+            this.maxVal = 0;
+            this.sumData = 0;
+            this.sumSquares = 0;
+            this.mean = 0;
+            this.stddev = 0;
+        }
+    }
+}
+
+function computeStats() {
+    let n = this.basesCovered;
+    if (n > 0) {
+        this.mean = this.sumData / n;
+        this.stddev = Math.sqrt(this.sumSquares / (n - 1));
+
+        let min = this.minVal < 0 ? this.mean - 2 * this.stddev : 0,
+            max = this.maxVal > 0 ? this.mean + 2 * this.stddev : 0;
+
+        this.defaultRange = {
+            min: min,
+            max: max
+        };
+    }
+}
+
+function zoomLevelForScale$1(bpPerPixel, zoomLevelHeaders) {
+    let level;
+    for (let i = 0; i < zoomLevelHeaders.length; i++) {
+        const zl = zoomLevelHeaders[i];
+        if (zl.reductionLevel < bpPerPixel) {
+            level = zl;
+            break
+        }
+    }
+    return level
+}
+
+
+function decodeWigData(data, chrIdx1, bpStart, chrIdx2, bpEnd, featureArray, chrDict) {
+
+    const binaryParser = new BinaryParser(data);
+    const chromId = binaryParser.getInt();
+    const blockStart = binaryParser.getInt();
+    let chromStart = blockStart;
+    let chromEnd = binaryParser.getInt();
+    const itemStep = binaryParser.getInt();
+    const itemSpan = binaryParser.getInt();
+    const type = binaryParser.getByte();
+    binaryParser.getByte();
+    let itemCount = binaryParser.getUShort();
+
+    if (chromId >= chrIdx1 && chromId <= chrIdx2) {
+
+        let idx = 0;
+        while (itemCount-- > 0) {
+            let value;
+            switch (type) {
+                case 1:
+                    chromStart = binaryParser.getInt();
+                    chromEnd = binaryParser.getInt();
+                    value = binaryParser.getFloat();
+                    break
+                case 2:
+                    chromStart = binaryParser.getInt();
+                    value = binaryParser.getFloat();
+                    chromEnd = chromStart + itemSpan;
+                    break
+                case 3:  // Fixed step
+                    value = binaryParser.getFloat();
+                    chromStart = blockStart + idx * itemStep;
+                    chromEnd = chromStart + itemSpan;
+                    idx++;
+                    break
+            }
+
+            if (chromId < chrIdx1 || (chromId === chrIdx1 && chromEnd < bpStart)) continue
+            else if (chromId > chrIdx2 || (chromId === chrIdx2 && chromStart >= bpEnd)) break
+
+            if (Number.isFinite(value)) {
+                const chr = chrDict[chromId];
+                featureArray.push({chr: chr, start: chromStart, end: chromEnd, value: value});
+            }
+
+        }
+    }
+}
+
+function getBedDataDecoder() {
+
+    const minSize = 3 * 4 + 1;   // Minimum # of bytes required for a bed record
+    const decoder = getDecoder(this.header.definedFieldCount, this.header.fieldCount, this.autoSql, this.format);
+    return function (data, chrIdx1, bpStart, chrIdx2, bpEnd, featureArray, chrDict) {
+        const binaryParser = new BinaryParser(data);
+        while (binaryParser.remLength() >= minSize) {
+
+            const chromId = binaryParser.getInt();
+            const chr = chrDict[chromId];
+            const chromStart = binaryParser.getInt();
+            const chromEnd = binaryParser.getInt();
+            const rest = binaryParser.getString();
+            if (chromId < chrIdx1 || (chromId === chrIdx1 && chromEnd < bpStart)) continue
+            else if (chromId > chrIdx2 || (chromId === chrIdx2 && chromStart >= bpEnd)) break
+
+            if (chromEnd > 0) {
+                const feature = {chr: chr, start: chromStart, end: chromEnd};
+                featureArray.push(feature);
+                const tokens = rest.split("\t");
+                decoder(feature, tokens);
+            }
+        }
+    }
+}
+
+
+function decodeZoomData(data, chrIdx1, bpStart, chrIdx2, bpEnd, featureArray, chrDict, windowFunction) {
+
+    const binaryParser = new BinaryParser(data);
+    const minSize = 8 * 4;  // Minimum # of bytes required for a zoom record
+
+
+    while (binaryParser.remLength() >= minSize) {
+        const chromId = binaryParser.getInt();
+        const chr = chrDict[chromId];
+        const chromStart = binaryParser.getInt();
+        const chromEnd = binaryParser.getInt();
+        const validCount = binaryParser.getInt();
+        const minVal = binaryParser.getFloat();
+        const maxVal = binaryParser.getFloat();
+        const sumData = binaryParser.getFloat();
+        binaryParser.getFloat();
+        let value;
+        switch (windowFunction) {
+            case "min":
+                value = minVal;
+                break
+            case "max":
+                value = maxVal;
+                break
+            default:
+                value = validCount === 0 ? 0 : sumData / validCount;
+        }
+
+        if (chromId < chrIdx1 || (chromId === chrIdx1 && chromEnd < bpStart)) continue
+        else if (chromId > chrIdx2 || (chromId === chrIdx2 && chromStart >= bpEnd)) break
+
+
+        if (Number.isFinite(value)) {
+            featureArray.push({chr: chr, start: chromStart, end: chromEnd, value: value});
+
+
+        }
+    }
+}
+
+class DataBuffer {
+
+    constructor(dataURI) {
+        this.data = decodeDataURI$1(dataURI).buffer;
+    }
+
+    /**
+     * igvxhr interface
+     * @param ignore
+     * @param options
+     * @returns {any}
+     */
+    loadArrayBuffer(ignore, options) {
+        const range = options.range;
+        return range ? this.data.slice(range.start, range.start + range.size) : this.data
+    }
+
+    /**
+     * BufferedReader interface
+     *
+     * @param requestedRange - byte rangeas {start, size}
+     * @param fulfill - function to receive result
+     * @param asUint8 - optional flag to return result as an UInt8Array
+     */
+    async dataViewForRange(requestedRange, asUint8) {
+        const len = Math.min(this.data.byteLength - requestedRange.start, requestedRange.size);
+        return asUint8 ?
+            new Uint8Array(this.data, requestedRange.start, len) :
+            new DataView(this.data, requestedRange.start, len)
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class BWSource {
+
+    constructor(config, genome) {
+        this.reader = new BWReader(config, genome);
+        this.genome = genome;
+        this.format = config.format || "bigwig";
+        this.wgValues = {};
+        this.queryable = true;
+    }
+
+    async getFeatures({chr, start, end, bpPerPixel, windowFunction}) {
+
+        const isBigWig = this.reader.type === "bigwig";
+
+        const features = (chr.toLowerCase() === "all") ?
+            (isBigWig ? await this.getWGValues(windowFunction) : []) :
+            await this.reader.readFeatures(chr, start, chr, end, bpPerPixel, windowFunction);
+
+        if (!isBigWig) {
+            pack(features);
+        }
+        return features
+    }
+
+    async getHeader() {
+        return this.reader.loadHeader()
+    }
+
+    getDefaultRange() {
+        if (this.reader.totalSummary !== undefined) {
+            return this.reader.totalSummary.defaultRange
+        } else {
+            return undefined
+        }
+    }
+
+    async defaultVisibilityWindow() {
+        return this.reader.defaultVisibilityWindow
+    }
+
+    async getWGValues(windowFunction) {
+
+        const nominalScreenWidth = 1000;      // This doesn't need to be precise
+        const genome = this.genome;
+
+        if (this.wgValues[windowFunction]) {
+            return this.wgValues[windowFunction]
+        } else {
+
+            const bpPerPixel = genome.getGenomeLength() / nominalScreenWidth;
+            const features = await this.reader.readWGFeatures(bpPerPixel, windowFunction);
+            let wgValues = [];
+            for (let f of features) {
+                const chr = f.chr;
+                const offset = genome.getCumulativeOffset(chr);
+                const wgFeature = Object.assign({}, f);
+                wgFeature.chr = "all";
+                wgFeature.start = offset + f.start;
+                wgFeature.end = offset + f.end;
+                wgValues.push(wgFeature);
+            }
+            this.wgValues[windowFunction] = wgValues;
+            return wgValues
+        }
+    }
+
+    supportsWholeGenome() {
+        return this.reader.type === "bigwig"
+    }
+
+    async trackType() {
+        return this.reader.getTrackType()
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 University of California San Diego
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const GZIP_FLAG = 0x1;
+
+class TDFReader {
+
+    constructor(config, genome) {
+        this.config = config;
+        this.genome = genome;
+        this.path = config.url;
+        this.groupCache = {};
+        this.datasetCache = {};
+    }
+
+
+    async readHeader() {
+
+        if (this.magic !== undefined) {
+            return this   // Already read
+        }
+
+        let data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {range: {start: 0, size: 64000}}));
+        let binaryParser = new BinaryParser(new DataView(data));
+        this.magic = binaryParser.getInt();
+        this.version = binaryParser.getInt();
+        this.indexPos = binaryParser.getLong();
+        this.indexSize = binaryParser.getInt();
+        binaryParser.getInt();
+
+
+        if (this.version >= 2) {
+            let nWindowFunctions = binaryParser.getInt();
+            this.windowFunctions = [];
+            while (nWindowFunctions-- > 0) {
+                this.windowFunctions.push(binaryParser.getString());
+            }
+        }
+
+        this.trackType = binaryParser.getString();
+        this.trackLine = binaryParser.getString();
+
+        let nTracks = binaryParser.getInt();
+        this.trackNames = [];
+        while (nTracks-- > 0) {
+            this.trackNames.push(binaryParser.getString());
+        }
+        this.genomeID = binaryParser.getString();
+        this.flags = binaryParser.getInt();
+        this.compressed = (this.flags & GZIP_FLAG) !== 0;
+
+        // Now read index
+        data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {
+            range: {
+                start: this.indexPos,
+                size: this.indexSize
+            }
+        }));
+        binaryParser = new BinaryParser(new DataView(data));
+        this.datasetIndex = {};
+        let nEntries = binaryParser.getInt();
+        while (nEntries-- > 0) {
+            const name = binaryParser.getString();
+            const pos = binaryParser.getLong();
+            const size = binaryParser.getInt();
+            this.datasetIndex[name] = {position: pos, size: size};
+        }
+
+        this.groupIndex = {};
+        nEntries = binaryParser.getInt();
+        while (nEntries-- > 0) {
+            const name = binaryParser.getString();
+            const pos = binaryParser.getLong();
+            const size = binaryParser.getInt();
+            this.groupIndex[name] = {position: pos, size: size};
+        }
+
+        return this
+    }
+
+    async readDataset(chr, windowFunction, zoom) {
+
+        const key = chr + "_" + windowFunction + "_" + zoom;
+
+        if (this.datasetCache[key]) {
+            return this.datasetCache[key]
+
+        } else {
+            await this.readHeader();
+            const wf = (this.version < 2) ? "" : "/" + windowFunction;
+            const zoomString = (chr.toLowerCase() === "all" || zoom === undefined) ? "0" : zoom.toString();
+
+            let dsName;
+            if (windowFunction === "raw") {
+                dsName = "/" + chr + "/raw";
+            } else {
+                dsName = "/" + chr + "/z" + zoomString + wf;
+            }
+            const indexEntry = this.datasetIndex[dsName];
+
+            if (indexEntry === undefined) {
+                return undefined
+            }
+
+            const data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {
+                range: {
+                    start: indexEntry.position,
+                    size: indexEntry.size
+                }
+            }));
+
+            if (!data) {
+                return undefined
+            }
+
+            const binaryParser = new BinaryParser(new DataView(data));
+            let nAttributes = binaryParser.getInt();
+            const attributes = {};
+            while (nAttributes-- > 0) {
+                attributes[binaryParser.getString()] = binaryParser.getString();
+            }
+            const dataType = binaryParser.getString();
+            const tileWidth = binaryParser.getFloat();
+            let nTiles = binaryParser.getInt();
+            const tiles = [];
+            while (nTiles-- > 0) {
+                tiles.push({position: binaryParser.getLong(), size: binaryParser.getInt()});
+            }
+
+            const dataset = {
+                name: dsName,
+                attributes: attributes,
+                dataType: dataType,
+                tileWidth: tileWidth,
+                tiles: tiles
+            };
+
+            this.datasetCache[key] = dataset;
+            return dataset
+        }
+    }
+
+    async readRootGroup() {
+
+        const genome = this.genome;
+        const rootGroup = this.groupCache["/"];
+        if (rootGroup) {
+            return rootGroup
+        } else {
+
+            const group = await this.readGroup("/");
+            const names = group["chromosomes"];
+            const maxZoomString = group["maxZoom"];
+
+            // Now parse out interesting attributes.
+            if (maxZoomString) {
+                this.maxZoom = Number(maxZoomString);
+            }
+
+            const totalCountString = group["totalCount"];
+            if (totalCountString) {
+                group.totalCount = Number(totalCountString);
+            }
+
+            // Chromosome names
+            const chrAliasTable = {};
+            if (names) {
+                names.split(",").forEach(function (chr) {
+                    const canonicalName = genome.getChromosomeName(chr);
+                    chrAliasTable[canonicalName] = chr;
+                });
+            }
+            this.chrAliasTable = chrAliasTable;
+
+            this.groupCache["/"] = group;
+            return group
+        }
+    }
+
+    async readGroup(name) {
+
+        const group = this.groupCache[name];
+        if (group) {
+            return group
+        } else {
+
+            await this.readHeader();
+            const indexEntry = this.groupIndex[name];
+            if (indexEntry === undefined) {
+                return undefined
+            }
+
+            const data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {
+                range: {
+                    start: indexEntry.position,
+                    size: indexEntry.size
+                }
+            }));
+
+            if (!data) {
+                return undefined
+            }
+
+            const binaryParser = new BinaryParser(new DataView(data));
+            const group = {name: name};
+            let nAttributes = binaryParser.getInt();
+            while (nAttributes-- > 0) {
+                const key = binaryParser.getString();
+                const value = binaryParser.getString();
+                group[key] = value;
+            }
+            this.groupCache[name] = group;
+            return group
+        }
+    }
+
+
+    async readTiles(tileIndeces, nTracks) {
+
+        tileIndeces.sort(function (a, b) {
+            return a.position - b.position
+        });
+
+        tileIndeces = tileIndeces.filter(function (idx) {
+            return idx.size > 0
+        });
+
+        if (tileIndeces.length === 0) {
+            return Promise.resolve([])
+        }
+
+        const firstEntry = tileIndeces[0];
+        const lastEntry = tileIndeces[tileIndeces.length - 1];
+        const position = firstEntry.position;
+        const size = (lastEntry.position + lastEntry.size) - position;
+        const data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {
+            range: {
+                start: position,
+                size: size
+            }
+        }));
+
+        const tiles = [];
+
+        // Loop through and decode tiles
+        for (let indexEntry of tileIndeces) {
+            const start = indexEntry.position - position;
+            const size = indexEntry.size;
+            if (size > 0) {
+                let tileData;
+                if (this.compressed) {
+                    const plain = inflate_1$3(data.slice(start, start + size));
+                    tileData = plain.buffer;
+                } else {
+                    tileData = data.slice(start, start + size);
+                }
+
+                const binaryParser = new BinaryParser(new DataView(tileData));
+                const type = binaryParser.getString();
+                let tile;
+                switch (type) {
+                    case "fixedStep":
+                        tile = createFixedStep(binaryParser, nTracks);
+                        break
+                    case "variableStep":
+                        tile = createVariableStep(binaryParser, nTracks);
+                        break
+                    case "bed":
+                    case "bedWithName":
+                        tile = createBed(binaryParser, nTracks, type);
+                        break
+                    default:
+                        throw "Unknown tile type: " + type
+                }
+                tiles.push(tile);
+            }
+        }
+        return tiles
+    }
+
+    async readTile(indexEntry, nTracks) {
+
+        let data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {
+            range: {
+                start: indexEntry.position,
+                size: indexEntry.size
+            }
+        }));
+
+        if (this.compressed) {
+            const plain = inflate_1$3(data);
+            data = plain.buffer;
+        }
+
+        const binaryParser = new BinaryParser(new DataView(data));
+        const type = binaryParser.getString();
+        switch (type) {
+            case "fixedStep":
+                return createFixedStep(binaryParser, nTracks)
+            case "variableStep":
+                return createVariableStep(binaryParser, nTracks)
+            case "bed":
+            case "bedWithName":
+                return createBed(binaryParser, nTracks, type)
+            default:
+                throw "Unknown tile type: " + type
+        }
+    }
+
+}
+
+function createFixedStep(binaryParser, nTracks) {
+    const nPositions = binaryParser.getInt();
+    const start = binaryParser.getInt();
+    const span = binaryParser.getFloat();
+
+    const data = [];
+    let nt = nTracks;
+    while (nt-- > 0) {
+        let np = nPositions;
+        const dtrack = [];
+        while (np-- > 0) {
+            dtrack.push(binaryParser.getFloat());
+        }
+        data.push(dtrack);
+    }
+
+    return {
+        type: "fixedStep",
+        start: start,
+        span: span,
+        data: data,
+        nTracks: nTracks,
+        nPositions: nPositions
+    }
+}
+
+function createVariableStep(binaryParser, nTracks) {
+
+    const tileStart = binaryParser.getInt();
+    const span = binaryParser.getFloat();
+    const nPositions = binaryParser.getInt();
+    const start = [];
+
+    let np = nPositions;
+    while (np-- > 0) {
+        start.push(binaryParser.getInt());
+    }
+    binaryParser.getInt();  // # of samples, ignored but should === nTracks
+
+    const data = [];
+    let nt = nTracks;
+    while (nt-- > 0) {
+        np = nPositions;
+        const dtrack = [];
+        while (np-- > 0) {
+            dtrack.push(binaryParser.getFloat());
+        }
+        data.push(dtrack);
+    }
+
+    return {
+        type: "variableStep",
+        tileStart: tileStart,
+        span: span,
+        start: start,
+        data: data,
+        nTracks: nTracks,
+        nPositions: nPositions
+    }
+}
+
+function createBed(binaryParser, nTracks, type) {
+
+    const nPositions = binaryParser.getInt();
+
+    let n = nPositions;
+    const start = [];
+    while (n-- > 0) {
+        start.push(binaryParser.getInt());
+    }
+
+    n = nPositions;
+    const end = [];
+    while (n-- > 0) {
+        end.push(binaryParser.getInt());
+    }
+
+    binaryParser.getInt();  // # of samples, ignored but should === nTracks
+    const data = [];
+    let nt = nTracks;
+    while (nt-- > 0) {
+        let np = nPositions;
+        const dtrack = [];
+        while (np-- > 0) {
+            dtrack.push(binaryParser.getFloat());
+        }
+        data.push(dtrack);
+    }
+
+    if (type === "bedWithName") {
+        n = nPositions;
+        const name = [];
+        while (n-- > 0) {
+            name.push(binaryParser.getString());
+        }
+    }
+
+    return {
+        type: type,
+        start: start,
+        end: end,
+        data: data,
+        nTracks: nTracks,
+        nPositions: nPositions
+    }
+
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 University of California San Diego
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class TDFSource {
+
+    constructor(config, genome) {
+        this.genome = genome;
+        this.windowFunction = config.windowFunction || "mean";
+        this.reader = new TDFReader(config, genome);
+        this.queryable = true;
+    }
+
+    async getFeatures({chr, start, end, bpPerPixel}) {
+
+        if (chr.toLowerCase() === "all") {
+            const wgFeatures = [];
+            const genome = this.genome;
+            const chrNames = this.genome.wgChromosomeNames;
+            if (chrNames) {
+                for (let c of genome.wgChromosomeNames) {
+                    const len = genome.getChromosome(c).bpLength;
+                    bpPerPixel = len / 1000;
+                    const chrFeatures = await this._getFeatures(c, 0, len, bpPerPixel);
+                    if (chrFeatures) {
+                        for (let f of chrFeatures) {
+                            const wg = Object.assign({}, f);
+                            wg.chr = "all";
+                            wg.start = genome.getGenomeCoordinate(f.chr, f.start);
+                            wg.end = genome.getGenomeCoordinate(f.chr, f.end);
+                            wg._f = f;
+                            wgFeatures.push(wg);
+                        }
+                    }
+                }
+            }
+            return wgFeatures
+
+        } else {
+            return this._getFeatures(chr, start, end, bpPerPixel)
+        }
+    }
+
+    async _getFeatures(chr, start, end, bpPerPixel) {
+        const genomicInterval = new GenomicInterval(chr, start, end);
+        const genome = this.genome;
+
+
+        if (!this.rootGroup) {
+            this.rootGroup = await this.reader.readRootGroup();
+            if (!this.normalizationFactor) {
+                const totalCount = this.rootGroup.totalCount;
+                if (totalCount) {
+                    this.normalizationFactor = 1.0e6 / totalCount;
+                }
+            }
+        }
+
+        genomicInterval.bpPerPixel = bpPerPixel;
+        const zoom = zoomLevelForScale(chr, bpPerPixel, genome);
+        let queryChr = this.reader.chrAliasTable[chr];
+        let maxZoom = this.reader.maxZoom;
+        if (queryChr === undefined) queryChr = chr;
+        if (maxZoom === undefined) maxZoom = -1;
+
+        const wf = zoom > maxZoom ? "raw" : this.windowFunction;
+        const dataset = await this.reader.readDataset(queryChr, wf, zoom);
+        if (dataset == null) {
+            return []
+        }
+
+        const tileWidth = dataset.tileWidth;
+        const startTile = Math.floor(start / tileWidth);
+        const endTile = Math.floor(end / tileWidth);
+        const NTRACKS = 1;   // TODO read this
+        const tiles = await this.reader.readTiles(dataset.tiles.slice(startTile, endTile + 1), NTRACKS);
+        const features = [];
+        for (let tile of tiles) {
+            switch (tile.type) {
+                case "bed":
+                    decodeBedTile(tile, chr, start, end, bpPerPixel, features);
+                    break
+                case "variableStep":
+                    decodeVaryTile(tile, chr, start, end, bpPerPixel, features);
+                    break
+                case "fixedStep":
+                    decodeFixedTile(tile, chr, start, end, bpPerPixel, features);
+                    break
+                default:
+                    throw ("Unknown tile type: " + tile.type)
+            }
+        }
+        features.sort(function (a, b) {
+            return a.start - b.start
+        });
+
+        return features
+    }
+
+    get supportsWholeGenome() {
+        return true
+    }
+}
+
+function decodeBedTile(tile, chr, bpStart, bpEnd, bpPerPixel, features) {
+
+    const nPositions = tile.nPositions;
+    const starts = tile.start;
+    const ends = tile.end;
+    const data = tile.data[0];   // Single track for now
+    for (let i = 0; i < nPositions; i++) {
+        const s = starts[i];
+        const e = ends[i];
+        if (e < bpStart) continue
+        if (s > bpEnd) break
+        features.push({
+            chr: chr,
+            start: s,
+            end: e,
+            value: data[i]
+        });
+    }
+}
+
+function decodeVaryTile(tile, chr, bpStart, bpEnd, bpPerPixel, features) {
+
+    const nPositions = tile.nPositions;
+    const starts = tile.start;
+    const span = tile.span;
+    const data = tile.data[0];   // Single track for now
+    for (let i = 0; i < nPositions; i++) {
+        const s = starts[i];
+        const e = s + span;
+        if (e < bpStart) continue
+        if (s > bpEnd) break
+        features.push({
+            chr: chr,
+            start: s,
+            end: e,
+            value: data[i]
+        });
+    }
+}
+
+function decodeFixedTile(tile, chr, bpStart, bpEnd, bpPerPixel, features) {
+
+    const nPositions = tile.nPositions;
+    let s = tile.start;
+    const span = tile.span;
+    const data = tile.data[0];   // Single track for now
+
+    for (let i = 0; i < nPositions; i++) {
+        const e = s + span;
+        if (s > bpEnd) break
+        if (e >= bpStart) {
+            if (!Number.isNaN(data[i])) {
+                features.push({
+                    chr: chr,
+                    start: s,
+                    end: e,
+                    value: data[i]
+                });
+            }
+        }
+        s = e;
+    }
+}
+
+
+var log2 = Math.log(2);
+
+function zoomLevelForScale(chr, bpPerPixel, genome) {
+
+    // Convert bpPerPixel to IGV "zoom" level.   This is a bit convoluted,  IGV computes zoom levels assuming
+    // display in a 700 pixel window.  The fully zoomed out view of a chromosome is zoom level "0".
+    // Zoom level 1 is magnified 2X,  and so forth
+
+    var chrSize = genome.getChromosome(chr).bpLength;
+
+    return Math.ceil(Math.log(Math.max(0, (chrSize / (bpPerPixel * 700)))) / log2)
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014-2015 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * feature source for features supplied directly, as opposed to reading and parsing from a file or webservice
+ *
+ * @param config
+ * @constructor
+ */
+class StaticFeatureSource {
+
+    constructor(config, genome) {
+
+        this.config = config;
+        this.genome = genome;
+        this.queryable = false;
+        this.searchable = config.searchable !== false;  // searchable by default
+        this.updateFeatures(config.features);
+    }
+
+    updateFeatures(features) {
+        features = fixFeatures(features, this.genome);
+        packFeatures(features);
+        if (this.config.mappings) {
+            mapProperties(features, this.config.mappings);
+        }
+        this.featureCache = new FeatureCache$1(features, this.genome);
+
+        if (this.searchable || this.config.searchableFields) {
+            this.genome.addFeaturesToDB(features, this.config);
+        }
+    }
+
+    /**
+     * Required function for all data source objects.  Fetches features for the
+     * range requested.
+     *
+     * This function is complex due to the variety of reader types backing it, some indexed, some queryable,
+     * some not.
+     *
+     * @param chr
+     * @param start
+     * @param end
+     * @param bpPerPixel
+     */
+    async getFeatures({chr, start, end, bpPerPixel, visibilityWindow}) {
+
+        const genome = this.genome;
+        const queryChr = genome ? genome.getChromosomeName(chr) : chr;
+        const isWholeGenome = ("all" === queryChr.toLowerCase());
+
+        // Various conditions that can require a feature load
+        //   * view is "whole genome" but no features are loaded
+        //   * cache is disabled
+        //   * cache does not contain requested range
+        if (isWholeGenome) {
+            return computeWGFeatures(this.featureCache.getAllFeatures(), this.genome, this.maxWGCount)
+        } else {
+            return this.featureCache.queryFeatures(queryChr, start, end)
+        }
+    }
+
+    //
+    // supportsWholeGenome() {
+    //    return true
+    // }
+
+    getAllFeatures() {
+        return this.featureCache.getAllFeatures()
+    }
+
+    supportsWholeGenome() {
+        return true
+    }
+
+
+}
+
+
+/**
+ * This function is used to apply properties normally added during parsing to  features supplied directly in the
+ * config as an array of objects.   At the moment the only application is bedpe type features.
+ * @param features
+ */
+function fixFeatures(features, genome) {
+
+    if (genome) {
+        for (let feature of features) {
+            feature.chr = genome.getChromosomeName(feature.chr);
+        }
+    }
+
+    return features
+}
+
+
+
+function mapProperties(features, mappings) {
+    let mappingKeys = Object.keys(mappings);
+    features.forEach(function (f) {
+        mappingKeys.forEach(function (key) {
+            f[key] = f[mappings[key]];
+        });
+    });
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014-2015 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const bbFormats = new Set(['bigwig', 'bw', 'bigbed', 'bb', 'biginteract', 'biggenepred', 'bignarrowpeak']);
+
+function FeatureSource(config, genome) {
+
+    const format = config.format ? config.format.toLowerCase() : undefined;
+
+    if (config.features) {
+        return new StaticFeatureSource(config, genome)
+    } else if (bbFormats.has(format)) {
+        return new BWSource(config, genome)
+    } else if ("tdf" === format) {
+        return new TDFSource(config, genome)
+    } else {
+        return new TextFeatureSource(config, genome)
+    }
+}
+
+const appleCrayonColorName = 'nickel';
+
+const ROI_DEFAULT_ALPHA = 2 / 16;
+
+const ROI_DEFAULT_COLOR = appleCrayonRGBA(appleCrayonColorName, ROI_DEFAULT_ALPHA);
+const ROI_DEFAULT_HEADER_COLOR = 'rgb(190,190,190)';
+
+const ROI_USER_HEADER_DEFINED_COLOR = 'rgba(155,185,129)';
+const ROI_USER_DEFINED_COLOR = ROI_DEFAULT_COLOR;
+
+class ROISet {
+
+    constructor(config, genome) {
+
+        this.url = config.url;
+
+        if (config.name) {
+            this.name = config.name;
+        } else if (config.url && isFile(config.url)) {
+            this.name = config.url.name;
+        } else if (config.url && isString$2(config.url) && !config.url.startsWith("data:")) {
+            this.name = getFilename$2(config.url);
+        }
+
+        this.isUserDefined = config.isUserDefined;
+
+        if (config.features) {
+            this.featureSource = new DynamicFeatureSource(config.features, genome);
+        } else {
+            if (config.format) {
+                config.format = config.format.toLowerCase();
+            } else {
+                const filename = getFilename$2(config.url);
+                config.format = inferFileFormat(filename);
+            }
+            this.featureSource = config.featureSource || FeatureSource(config, genome);
+        }
+
+        if (true === this.isUserDefined) {
+            this.color = config.color || ROI_USER_DEFINED_COLOR;
+            this.headerColor = ROI_USER_HEADER_DEFINED_COLOR;
+
+        } else {
+
+            this.color = config.color || ROI_DEFAULT_COLOR;
+            this.headerColor = ROI_DEFAULT_HEADER_COLOR;
+
+            // Use body color with alpha pinned to 1
+            // const [ r, g, b, discard ] = rgbaStringTokens(this.color)
+            // this.headerColor = `rgba(${ r },${ g },${ b },${ 1.0 })`
+
+        }
+    }
+
+    async getFeatures(chr, start, end) {
+        return this.featureSource.getFeatures({chr, start, end})
+    }
+
+    async getAllFeatures() {
+        return typeof this.featureSource.getAllFeatures === 'function' ? await this.featureSource.getAllFeatures() : {}
+    }
+
+    addFeature(feature) {
+        if (this.isUserDefined) {
+            this.featureSource.addFeature(feature);
+        } else {
+            console.error("Attempt to add ROI to non user-defined set");
+        }
+    }
+
+    removeFeature(feature) {
+        if (this.isUserDefined) {
+            this.featureSource.removeFeature(feature);
+        } else {
+            console.error("Attempt to remove ROI from non user-defined set");
+        }
+    }
+
+    toJSON() {
+        if (this.url) {
+            return {name: this.name, color: this.color, url: this.url, isUserDefined: this.isUserDefined}
+        } else {
+            const featureMap = this.featureSource.getAllFeatures();
+            const features = [];
+            for (let chr of Object.keys(featureMap)) {
+                for (let f of featureMap[chr]) {
+                    features.push(f);
+                }
+            }
+            return {name: this.name, color: this.color, features: features, isUserDefined: this.isUserDefined}
+        }
+    }
+
+    dispose() {
+        for (let key of Object.keys(this)) {
+            this[key] = undefined;
+        }
+    }
+
+}
+
+const SCREEN_COORDS_WIDTH_THRESHOLD = 3;
+
+function screenCoordinates(regionStartBP, regionEndBP, bpStart, bpp) {
+
+    let xStart = Math.round((regionStartBP - bpStart) / bpp);
+    const xEnd = Math.round((regionEndBP - bpStart) / bpp);
+
+    let width = xEnd - xStart;
+
+    if (width < SCREEN_COORDS_WIDTH_THRESHOLD) {
+        width = SCREEN_COORDS_WIDTH_THRESHOLD;
+        xStart -= 1;
+    }
+
+    return {x: xStart, width}
+}
+
+
+/**
+ * Special feature source that allows addition of features dynamically
+ */
+class DynamicFeatureSource {
+
+    constructor(features, genome) {
+        this.featureMap = {};
+        this.genome = genome;
+
+        for (let feature of features) {
+
+            // Store as canonical chr name (i.e. translate aliases)
+            const chrKey = genome ? genome.getChromosomeName(feature.chr) : feature.chr;
+
+            let featureList = this.featureMap[chrKey];
+            if (!featureList) {
+                featureList = [];
+                this.featureMap[chrKey] = featureList;
+            }
+            featureList.push(feature);
+        }
+
+        for (let key of Object.keys(this.featureMap)) {
+            this.featureMap[key].sort((a, b) => a.start - b.start);
+        }
+    }
+
+    getFeatures({chr, start, end}) {
+        if (chr.toLowerCase() === 'all') {
+            return computeWGFeatures(this.featureMap, this.genome)
+        } else {
+            // TODO -- this use of filter is O(N), and might not scale well for large feature lists.
+            const featureList = this.featureMap[chr];
+            return featureList ? featureList.filter(feature => feature.end > start && feature.start < end) : []
+        }
+    }
+
+    getAllFeatures() {
+        return this.featureMap
+    }
+
+    supportsWholeGenome() {
+        return true
+    }
+
+    addFeature(feature) {
+        let featureList = this.featureMap[feature.chr];
+        if (!featureList) {
+            featureList = [];
+            this.featureMap[feature.chr] = featureList;
+        }
+        featureList.push(feature);
+        featureList.sort((a, b) => a.start - b.start);
+    }
+
+    removeFeature({chr, start, end}) {
+
+        if (this.featureMap[chr]) {
+            const match = `${chr}-${start}-${end}`;
+            this.featureMap[chr] = this.featureMap[chr].filter(feature => match !== `${feature.chr}-${feature.start}-${feature.end}`);
+        }
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2017 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const RULER_SWEEPER_COLOR = 'rgba(68, 134, 247, 0.25)';
+
+class RulerSweeper {
+
+    constructor(rulerViewport, column, browser, referenceFrame) {
+
+        this.rulerViewport = rulerViewport;
+
+        this.rulerSweeper = domUtils.div({class: 'igv-ruler-sweeper'});
+        column.appendChild(this.rulerSweeper);
+
+        this.browser = browser;
+        this.referenceFrame = referenceFrame;
+
+        this.isMouseHandlers = undefined;
+
+        this.addBrowserObserver();
+    }
+
+    addBrowserObserver() {
+
+        const observerHandler = () => {
+            if (this.referenceFrame) {
+                GenomeUtils.isWholeGenomeView(this.referenceFrame.chr) ? this.removeMouseHandlers() : this.addMouseHandlers();
+            }
+        };
+
+        // Viewport Content
+        this.boundObserverHandler = observerHandler.bind(this);
+        this.browser.on('locuschange', this.boundObserverHandler);
+
+    }
+
+    removeBrowserObserver() {
+        this.browser.off('locuschange', this.boundObserverHandler);
+    }
+
+    addMouseHandlers() {
+
+        if (true === this.isMouseHandlers) {
+            return
+        }
+
+        const threshold = 1;
+
+        let isMouseDown;
+        let isMouseIn;
+        let mouseDownX;
+        let left;
+        let width;
+        let dx;
+
+        // Viewport Content
+        this.boundContentMouseDownHandler = contentMouseDownHandler.bind(this);
+        this.rulerViewport.contentDiv.addEventListener('mousedown', this.boundContentMouseDownHandler);
+
+        function contentMouseDownHandler(event) {
+
+            isMouseDown = true;
+            isMouseIn = true;
+
+            const {x} = domUtils.translateMouseCoordinates(event, this.rulerViewport.contentDiv);
+            left = mouseDownX = x;
+
+            width = threshold;
+
+
+            this.rulerSweeper.style.display = 'block';
+            this.rulerSweeper.style.backgroundColor = true === event.shiftKey ? ROI_USER_DEFINED_COLOR : RULER_SWEEPER_COLOR;
+
+            this.rulerSweeper.style.left = `${left}px`;
+            this.rulerSweeper.style.width = `${width}px`;
+
+        }
+
+        // Document
+        this.boundDocumentMouseMoveHandler = documentMouseMoveHandler.bind(this);
+        document.addEventListener('mousemove', this.boundDocumentMouseMoveHandler);
+
+        function documentMouseMoveHandler(event) {
+
+            let mouseCurrentX;
+
+            if (isMouseDown && isMouseIn) {
+
+                const {x} = domUtils.translateMouseCoordinates(event, this.rulerViewport.contentDiv);
+                mouseCurrentX = Math.max(Math.min(x, this.rulerViewport.contentDiv.clientWidth), 0);
+
+                dx = mouseCurrentX - mouseDownX;
+
+                width = Math.abs(dx);
+                this.rulerSweeper.style.width = `${width}px`;
+
+                if (dx < 0) {
+                    left = mouseDownX + dx;
+                    this.rulerSweeper.style.left = `${left}px`;
+                }
+
+            }
+
+        }
+
+        this.boundDocumentMouseUpHandler = documentMouseUpHandler.bind(this);
+        document.addEventListener('mouseup', this.boundDocumentMouseUpHandler);
+
+        function documentMouseUpHandler(event) {
+
+            let genomicExtent;
+
+            if (true === isMouseDown && true === isMouseIn) {
+
+                isMouseDown = isMouseIn = undefined;
+
+                this.rulerSweeper.style.display = 'none';
+
+                if (width > threshold) {
+
+                    genomicExtent =
+                        {
+                            start: Math.floor(this.referenceFrame.calculateEnd(left)),
+                            end: Math.floor(this.referenceFrame.calculateEnd(left + width)),
+                        };
+
+
+                    const shiftKeyPressed = event.shiftKey;
+
+                    if (true === shiftKeyPressed) {
+                        this.browser.roiManager.updateUserDefinedROISet(Object.assign({chr: this.referenceFrame.chr}, genomicExtent));
+                    } else {
+
+                        validateGenomicExtent(this.browser.genome.getChromosome(this.referenceFrame.chr).bpLength, genomicExtent, this.browser.minimumBases());
+                        updateReferenceFrame(this.referenceFrame, genomicExtent, this.rulerViewport.contentDiv.clientWidth);
+                        this.browser.updateViews(this.referenceFrame);
+
+                    }
+
+                }
+
+            }
+
+        }
+
+        this.isMouseHandlers = true;
+    }
+
+    removeMouseHandlers() {
+        this.rulerViewport.contentDiv.removeEventListener('mousedown', this.boundContentMouseDownHandler);
+        document.removeEventListener('mousemove', this.boundDocumentMouseMoveHandler);
+        document.removeEventListener('mouseup', this.boundDocumentMouseUpHandler);
+        this.isMouseHandlers = false;
+    }
+
+    dispose() {
+        this.removeBrowserObserver();
+        this.removeMouseHandlers();
+        this.rulerSweeper.remove();
+    }
+
+}
+
+function updateReferenceFrame(referenceFrame, genomicExtent, pixelWidth) {
+    referenceFrame.start = Math.round(genomicExtent.start);
+    referenceFrame.end = Math.round(genomicExtent.end);
+    referenceFrame.bpPerPixel = (referenceFrame.end - referenceFrame.start) / pixelWidth;
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 University of California San Diego
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+class PairedAlignment {
+
+    constructor(firstAlignment) {
+
+        this.paired = true;
+        this.firstAlignment = firstAlignment;
+        this.chr = firstAlignment.chr;
+        this.readName = firstAlignment.readName;
+
+        if (firstAlignment.start < firstAlignment.mate.position) {
+            this.start = firstAlignment.start;
+            this.scStart = firstAlignment.scStart;
+            this.connectingStart = firstAlignment.start + firstAlignment.lengthOnRef;
+            this.connectingEnd = firstAlignment.mate.position;
+        } else {
+            this.start = firstAlignment.mate.position;
+            this.scStart = this.start;
+            this.connectingStart = firstAlignment.mate.position;
+            this.connectingEnd = firstAlignment.start;
+        }
+
+        this.end = Math.max(firstAlignment.mate.position, firstAlignment.start + firstAlignment.lengthOnRef);  // Approximate
+        this.lengthOnRef = this.end - this.start;
+
+        let scEnd = Math.max(this.end, firstAlignment.scStart + firstAlignment.scLengthOnRef);
+        this.scLengthOnRef = scEnd - this.scStart;
+
+    }
+
+    setSecondAlignment(secondAlignment) {
+
+        // TODO -- check the chrs are equal,  error otherwise
+        this.secondAlignment = secondAlignment;
+        const firstAlignment = this.firstAlignment;
+
+        if (secondAlignment.start > firstAlignment.start) {
+            this.connectingEnd = secondAlignment.start;
+        } else {
+            this.connectingStart = secondAlignment.start + secondAlignment.lengthOnRef;
+        }
+
+        this.start = Math.min(firstAlignment.start, secondAlignment.start);
+        this.end = Math.max(firstAlignment.start + firstAlignment.lengthOnRef, secondAlignment.start + secondAlignment.lengthOnRef);
+        this.lengthOnRef = this.end - this.start;
+
+        this.scStart = Math.min(firstAlignment.scStart, secondAlignment.scStart);
+        const scEnd = Math.max(firstAlignment.scStart + firstAlignment.scLengthOnRef, secondAlignment.scStart + secondAlignment.scLengthOnRef);
+        this.scLengthOnRef = scEnd - this.scStart;
+
+    }
+
+    containsLocation(genomicLocation, showSoftClips) {
+        const s = showSoftClips ? this.scStart : this.start;
+        const l = showSoftClips ? this.scLengthOnRef : this.lengthOnRef;
+        return (genomicLocation >= s && genomicLocation <= (s + l))
+    }
+
+    alignmentContaining(genomicLocation, showSoftClips) {
+        if (this.firstAlignment.containsLocation(genomicLocation, showSoftClips)) {
+            return this.firstAlignment
+        } else if (this.secondAlignment && this.secondAlignment.containsLocation(genomicLocation, showSoftClips)) {
+            return this.secondAlignment
+        } else {
+            return undefined
+        }
+    }
+
+    popupData(genomicLocation) {
+
+        let nameValues = this.firstAlignment.popupData(genomicLocation);
+
+        if (this.secondAlignment) {
+            nameValues.push("-------------------------------");
+            nameValues = nameValues.concat(this.secondAlignment.popupData(genomicLocation));
+        }
+        return nameValues
+    }
+
+    isPaired() {
+        return true // By definition
+    }
+
+    isMateMapped() {
+        return true // By definition
+    }
+
+    isProperPair() {
+        return this.firstAlignment.isProperPair()
+    }
+
+    get fragmentLength() {
+        return Math.abs(this.firstAlignment.fragmentLength)
+    }
+
+    firstOfPairStrand() {
+
+        if (this.firstAlignment.isFirstOfPair()) {
+            return this.firstAlignment.strand
+        } else if (this.secondAlignment && this.secondAlignment.isFirstOfPair()) {
+            return this.secondAlignment.strand
+        } else {
+            return this.firstAlignment.mate.strand    // Assumption is mate is first-of-pair
+        }
+    }
+
+    hasTag(str) {
+        return this.firstAlignment.hasTag(str) || (this.secondAlignment &&  this.secondAlignment.hasTag(str))
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class BamAlignmentRow {
+
+    constructor() {
+
+        this.alignments = [];
+        this.score = undefined;
+    }
+
+    findAlignment(genomicLocation) {
+
+        const alignmentContains = (a, genomicLocation) => {
+            return genomicLocation >= a.start && genomicLocation < a.start + a.lengthOnRef
+        };
+
+        // find single alignment that overlaps sort location
+        let centerAlignment;
+        for (let i = 0; i < this.alignments.length; i++) {
+            const a = this.alignments[i];
+            if (genomicLocation >= a.start && genomicLocation < a.start + a.lengthOnRef) {
+                if (a.paired) {
+                    if (a.firstAlignment && alignmentContains(a.firstAlignment, genomicLocation)) {
+                        centerAlignment = a.firstAlignment;
+                    } else if (a.secondAlignment && alignmentContains(a.secondAlignment, genomicLocation)) {
+                        centerAlignment = a.secondAlignment;
+                    }
+                } else {
+                    centerAlignment = a;
+                }
+                break
+            }
+        }
+
+        return centerAlignment
+
+    }
+
+    getSortValue({position, option, tag}, alignmentContainer) {
+
+        if (!option) option = "BASE";
+
+        const alignment = this.findAlignment(position);
+        if (undefined === alignment) {  // This condition should never occur
+            return Number.MAX_VALUE
+        }
+
+        switch (option) {
+            case "NUCLEOTIDE":
+            case "BASE": {
+                return calculateBaseScore(alignment, alignmentContainer, position)
+            }
+            case "STRAND":
+                return alignment.strand ? 1 : -1
+            case "START":
+                return alignment.start
+            case "TAG": {
+                return alignment.tags()[tag]
+            }
+            case "READ_NAME":
+                return alignment.readName
+            case "INSERT_SIZE":
+                return -Math.abs(alignment.fragmentLength)
+            case "GAP_SIZE":
+                return -alignment.gapSizeAt(position)
+            case "MATE_CHR":
+                return alignment.mate
+            case "MQ":
+                return alignment.mq === undefined ? Number.MAX_VALUE : -alignment.mq
+            case "ALIGNED_READ_LENGTH":
+                return -alignment.lengthOnRef
+            default:
+                return Number.MAX_VALUE
+        }
+
+
+        function calculateBaseScore(alignment, alignmentContainer, genomicLocation) {
+
+            let reference;
+            const idx = Math.floor(genomicLocation) - alignmentContainer.start;
+            if (idx < alignmentContainer.sequence.length) {
+                reference = alignmentContainer.sequence.charAt(idx);
+            }
+            if (!reference) {
+                return 0
+            }
+            const base = alignment.readBaseAt(genomicLocation);
+            const quality = alignment.readBaseQualityAt(genomicLocation);
+
+            const coverageMap = alignmentContainer.coverageMap;
+            const coverageMapIndex = Math.floor(genomicLocation - coverageMap.bpStart);
+            const coverage = coverageMap.coverage[coverageMapIndex];
+
+            // Insertions.  These are additive with base scores as they occur between bases, so you can have a
+            // base mismatch AND an insertion
+            let baseScore = 0;
+            if (alignment.insertions) {
+                for (let ins of alignment.insertions) {
+                    if (ins.start === genomicLocation) {
+                        baseScore = -coverage.ins;
+                    }
+                }
+            }
+
+
+            if (!base) {
+                // Either deletion or skipped (splice junction)
+                const delCount = coverage.del;
+                if (delCount > 0) {
+                    baseScore -= delCount;
+                } else if (baseScore === 0) {    // Don't modify insertion score, if any
+                    baseScore = 1;
+                }
+            } else {
+                reference = reference.toUpperCase();
+                if ('N' === base && baseScore === 0) {
+                    baseScore = 2;
+                } else if ((reference === base || '=' === base) && baseScore === 0) {
+                    baseScore = 4 - quality / 1000;
+                } else if ("X" === base || reference !== base) {
+                    const count = coverage["pos" + base] + coverage["neg" + base];
+                    baseScore -= (count + (quality / 1000));
+                }
+            }
+
+
+            return baseScore
+        }
+    }
+
+
+}
+
+const alignmentSpace = 2;
+
+function canBePaired(alignment) {
+    return alignment.isPaired() &&
+        alignment.mate &&
+        alignment.isMateMapped() &&
+        alignment.chr === alignment.mate.chr &&
+        (alignment.isFirstOfPair() || alignment.isSecondOfPair()) && !(alignment.isSecondary() || alignment.isSupplementary())
+}
+
+
+function pairAlignments(rows) {
+
+    const pairCache = {};
+    const result = [];
+
+    for (let row of rows) {
+        for (let alignment of row.alignments) {
+            if (canBePaired(alignment)) {
+                let pairedAlignment = pairCache[alignment.readName];
+                if (pairedAlignment) {
+                    pairedAlignment.setSecondAlignment(alignment);
+                    pairCache[alignment.readName] = undefined;   // Don't need to track this anymore.
+                } else {
+                    pairedAlignment = new PairedAlignment(alignment);
+                    pairCache[alignment.readName] = pairedAlignment;
+                    result.push(pairedAlignment);
+                }
+            } else {
+                result.push(alignment);
+            }
+        }
+    }
+    return result
+}
+
+function unpairAlignments(rows) {
+    const result = [];
+    for (let row of rows) {
+        for (let alignment of row.alignments) {
+            if (alignment instanceof PairedAlignment) {
+                if (alignment.firstAlignment) result.push(alignment.firstAlignment);  // shouldn't need the null test
+                if (alignment.secondAlignment) result.push(alignment.secondAlignment);
+            } else {
+                result.push(alignment);
+            }
+        }
+    }
+    return result
+}
+
+function packAlignmentRows(alignments, start, end, showSoftClips) {
+
+    //console.log(`packAlignmentRows ${start} ${end}`)
+    //const t0 = Date.now()
+
+    if (!alignments) {
+        return undefined
+    } else if (alignments.length === 0) {
+        return []
+    } else {
+        alignments.sort(function (a, b) {
+            return showSoftClips ? a.scStart - b.scStart : a.start - b.start
+        });
+
+        const packedAlignmentRows = [];
+        let alignmentRow;
+        let nextStart = 0;
+        let nextIDX = 0;
+        const allocated = new Set();
+        const startNewRow = () => {
+            alignmentRow = new BamAlignmentRow();
+            packedAlignmentRows.push(alignmentRow);
+            nextStart = 0;
+            nextIDX = 0;
+            allocated.clear();
+        };
+        startNewRow();
+
+        while (alignments.length > 0) {
+            if (nextIDX >= 0 && nextIDX < alignments.length) {
+                const alignment = alignments[nextIDX];
+                allocated.add(alignment);
+                alignmentRow.alignments.push(alignment);
+                nextStart = showSoftClips ?
+                    alignment.scStart + alignment.scLengthOnRef + alignmentSpace :
+                    alignment.start + alignment.lengthOnRef + alignmentSpace;
+                nextIDX = binarySearch$1(alignments, (a) => (showSoftClips ? a.scStart : a.start) > nextStart, nextIDX);
+            } else {
+                // Remove allocated alignments and start new row
+                alignments = alignments.filter(a => !allocated.has(a));
+                startNewRow();
+            }
+        }
+        //console.log(`Done in ${Date.now() - t0} ms`)
+        return packedAlignmentRows
+    }
+}
+
+
+/**
+ * Return 0 <= i <= array.length such that !pred(array[i - 1]) && pred(array[i]).
+ *
+ * returns an index 0 ≤ i ≤ array.length such that the given predicate is false for array[i - 1] and true for array[i]* *
+ */
+function binarySearch$1(array, pred, min) {
+    let lo = min - 1, hi = array.length;
+    while (1 + lo < hi) {
+        const mi = lo + ((hi - lo) >> 1);
+        if (pred(array[mi])) {
+            hi = mi;
+        } else {
+            lo = mi;
+        }
+    }
+    return hi
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 University of California San Diego
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+class AlignmentContainer {
+
+    //            this.config.samplingWindowSize, this.config.samplingDepth,
+    //             this.config.pairsSupported, this.config.alleleFreqThreshold)
+    constructor(chr, start, end, {samplingWindowSize, samplingDepth, pairsSupported, alleleFreqThreshold}) {
+
+        this.chr = chr;
+        this.start = Math.floor(start);
+        this.end = Math.ceil(end);
+        this.length = (end - start);
+
+        this.alleleFreqThreshold = alleleFreqThreshold === undefined ? 0.2 : alleleFreqThreshold;
+
+        this.coverageMap = new CoverageMap(chr, start, end, this.alleleFreqThreshold);
+        this.alignments = [];
+        this.downsampledIntervals = [];
+
+        this.samplingWindowSize = samplingWindowSize === undefined ? 100 : samplingWindowSize;
+        this.samplingDepth = samplingDepth === undefined ? 1000 : samplingDepth;
+
+        this.pairsSupported = pairsSupported === undefined ? true : pairsSupported;
+        this.paired = false;  // false until proven otherwise
+        this.pairsCache = {};  // working cache of paired alignments by read name
+
+        this.downsampledReads = new Set();
+
+        this.currentBucket = new DownsampleBucket(this.start, this.start + this.samplingWindowSize, this);
+
+        this.filter = function filter(alignment) {         // TODO -- pass this in
+            return alignment.isMapped() && !alignment.isFailsVendorQualityCheck()
+        };
+
+    }
+
+    push(alignment) {
+
+        if (this.filter(alignment) === false) return
+
+        this.coverageMap.incCounts(alignment);   // Count coverage before any downsampling
+
+        if (this.pairsSupported && this.downsampledReads.has(alignment.readName)) {
+            return   // Mate already downsampled -- pairs are treated as a single alignment for downsampling
+        }
+
+        if (alignment.start >= this.currentBucket.end) {
+            this.finishBucket();
+            this.currentBucket = new DownsampleBucket(alignment.start, alignment.start + this.samplingWindowSize, this);
+        }
+
+        this.currentBucket.addAlignment(alignment);
+
+    }
+
+    forEach(callback) {
+        this.alignments.forEach(callback);
+    }
+
+    finish() {
+
+        if (this.currentBucket !== undefined) {
+            this.finishBucket();
+        }
+
+        this.alignments.sort(function (a, b) {
+            return a.start - b.start
+        });
+
+        this.pairsCache = undefined;
+        this.downsampledReads = undefined;
+    }
+
+    contains(chr, start, end) {
+        return this.chr === chr &&
+            this.start <= start &&
+            this.end >= end
+    }
+
+    hasDownsampledIntervals() {
+        return this.downsampledIntervals && this.downsampledIntervals.length > 0
+    }
+
+    finishBucket() {
+        this.alignments = this.alignments.concat(this.currentBucket.alignments);
+        if (this.currentBucket.downsampledCount > 0) {
+            this.downsampledIntervals.push(new DownsampledInterval(
+                this.currentBucket.start,
+                this.currentBucket.end,
+                this.currentBucket.downsampledCount));
+        }
+        this.paired = this.paired || this.currentBucket.paired;
+    }
+
+    setViewAsPairs(bool) {
+        let alignments;
+        if (bool) {
+            alignments = pairAlignments(this.packedAlignmentRows);
+        } else {
+            alignments = unpairAlignments(this.packedAlignmentRows);
+        }
+        this.packedAlignmentRows = packAlignmentRows(alignments, this.start, this.end);
+    }
+
+    setShowSoftClips(bool) {
+        const alignments = this.allAlignments();
+        this.packedAlignmentRows = packAlignmentRows(alignments, this.start, this.end, bool);
+    }
+
+    repack(bpPerPixel, showSoftClips) {
+        const alignments = this.allAlignments();
+        this.packedAlignmentRows = packAlignmentRows(alignments, this.start, this.end, showSoftClips);
+
+    }
+
+    allAlignments() {
+        const alignments = [];
+        for (let row of this.packedAlignmentRows) {
+            for (let alignment of row.alignments) {
+                alignments.push(alignment);
+            }
+        }
+        return alignments
+    }
+
+    getMax(start, end) {
+        return this.coverageMap.getMax(start, end)
+    }
+
+    sortRows(options) {
+
+        const newRows = [];
+        const undefinedRow = [];
+        for (let row of this.packedAlignmentRows) {
+            const alignment = row.findAlignment(options.position);
+            if (undefined !== alignment) {
+                newRows.push(row);
+            } else {
+                undefinedRow.push(row);
+            }
+        }
+
+        newRows.sort((rowA, rowB) => {
+            const direction = options.direction;
+            const rowAValue = rowA.getSortValue(options, this);
+            const rowBValue = rowB.getSortValue(options, this);
+
+            if (rowBValue === undefined && rowBValue !== undefined) return 1
+            else if (rowAValue !== undefined && rowBValue === undefined) return -1
+
+            const i = rowAValue > rowBValue ? 1 : (rowAValue < rowBValue ? -1 : 0);
+            return true === direction ? i : -i
+        });
+
+        for (let row of undefinedRow) {
+            newRows.push(row);
+        }
+
+        this.packedAlignmentRows = newRows;
+    }
+
+}
+
+
+class DownsampleBucket {
+
+    constructor(start, end, alignmentContainer) {
+
+        this.start = start;
+        this.end = end;
+        this.alignments = [];
+        this.downsampledCount = 0;
+        this.samplingDepth = alignmentContainer.samplingDepth;
+        this.pairsSupported = alignmentContainer.pairsSupported;
+        this.downsampledReads = alignmentContainer.downsampledReads;
+        this.pairsCache = alignmentContainer.pairsCache;
+    }
+
+    addAlignment(alignment) {
+
+        var idx, replacedAlignment, pairedAlignment;
+
+        if (this.pairsSupported && canBePaired(alignment)) {
+            pairedAlignment = this.pairsCache[alignment.readName];
+            if (pairedAlignment) {
+                // Not subject to downsampling, just update the existing alignment
+                pairedAlignment.setSecondAlignment(alignment);
+                this.pairsCache[alignment.readName] = undefined;   // Don't need to track this anymore. NOTE: Don't "delete", causes runtime performance issues
+                return
+            }
+        }
+
+        if (this.alignments.length < this.samplingDepth) {
+
+            if (this.pairsSupported && canBePaired(alignment)) {
+
+                // First alignment in a pair
+                pairedAlignment = new PairedAlignment(alignment);
+                this.paired = true;
+                this.pairsCache[alignment.readName] = pairedAlignment;
+                this.alignments.push(pairedAlignment);
+
+            } else {
+                this.alignments.push(alignment);
+            }
+
+        } else {
+
+            idx = Math.floor(Math.random() * (this.samplingDepth + this.downsampledCount - 1));
+
+            if (idx < this.samplingDepth) {
+
+                // Keep the new item
+                //  idx = Math.floor(Math.random() * (this.alignments.length - 1));
+                replacedAlignment = this.alignments[idx];   // To be replaced
+
+                if (this.pairsSupported && canBePaired(alignment)) {
+
+                    if (this.pairsCache[replacedAlignment.readName] !== undefined) {
+                        this.pairsCache[replacedAlignment.readName] = undefined;
+                    }
+
+                    pairedAlignment = new PairedAlignment(alignment);
+                    this.paired = true;
+                    this.pairsCache[alignment.readName] = pairedAlignment;
+                    this.alignments[idx] = pairedAlignment;
+
+                } else {
+                    this.alignments[idx] = alignment;
+                }
+                this.downsampledReads.add(replacedAlignment.readName);
+
+            } else {
+                this.downsampledReads.add(alignment.readName);
+            }
+
+            this.downsampledCount++;
+        }
+
+
+    }
+}
+
+class CoverageMap {
+
+    constructor(chr, start, end, alleleFreqThreshold) {
+
+        this.chr = chr;
+        this.bpStart = start;
+        this.length = (end - start);
+
+        this.coverage = new Array(this.length);
+        this.maximum = 0;
+
+        this.threshold = alleleFreqThreshold;
+        this.qualityWeight = true;
+    }
+
+    /**
+     * Return the maximum coverage value between start and end.  This is used for autoscaling.
+     * @param start
+     * @param end
+     */
+    getMax(start, end) {
+        let max = 0;
+        const len = this.coverage.length;
+        for (let i = 0; i < len; i++) {
+            const pos = this.bpStart + i;
+            if (pos > end) break
+            const cov = this.coverage[i];
+            if (pos >= start && cov) {
+                max = Math.max(max, cov.total);
+            }
+        }
+        return max
+    }
+
+    incCounts(alignment) {
+
+        var self = this;
+
+        if (alignment.blocks === undefined) {
+            incBlockCount(alignment);
+        } else {
+            alignment.blocks.forEach(function (block) {
+                incBlockCount(block);
+            });
+        }
+
+        if (alignment.gaps) {
+            for (let del of alignment.gaps) {
+                if (del.type === 'D') {
+                    const offset = del.start - self.bpStart;
+                    for (let i = offset; i < offset + del.len; i++) {
+                        if (i < 0) continue
+                        if (!this.coverage[i]) {
+                            this.coverage[i] = new Coverage(self.threshold);
+                        }
+                        this.coverage[i].del++;
+                    }
+                }
+            }
+        }
+
+        if (alignment.insertions) {
+            for (let del of alignment.insertions) {
+                const i = del.start - this.bpStart;
+                if (i < 0) continue
+                if (!this.coverage[i]) {
+                    this.coverage[i] = new Coverage(self.threshold);
+                }
+                this.coverage[i].ins++;
+            }
+        }
+
+        function incBlockCount(block) {
+
+            if ('S' === block.type) return
+
+            const seq = alignment.seq;
+            const qual = alignment.qual;
+            const seqOffset = block.seqOffset;
+
+            for (let i = block.start - self.bpStart, j = 0; j < block.len; i++, j++) {
+
+                if (!self.coverage[i]) {
+                    self.coverage[i] = new Coverage(self.threshold);
+                }
+
+                const base = (seq == undefined) ? "N" : seq.charAt(seqOffset + j);
+                const key = (alignment.strand) ? "pos" + base : "neg" + base;
+                const q = qual && seqOffset + j < qual.length ? qual[seqOffset + j] : 30;
+
+                self.coverage[i][key] += 1;
+                self.coverage[i]["qual" + base] += q;
+
+                self.coverage[i].total += 1;
+                self.coverage[i].qual += q;
+
+                self.maximum = Math.max(self.coverage[i].total, self.maximum);
+
+            }
+        }
+    }
+}
+
+
+class Coverage {
+
+    constructor(alleleThreshold) {
+
+        this.qualityWeight = true;
+
+        this.posA = 0;
+        this.negA = 0;
+
+        this.posT = 0;
+        this.negT = 0;
+
+        this.posC = 0;
+        this.negC = 0;
+        this.posG = 0;
+
+        this.negG = 0;
+
+        this.posN = 0;
+        this.negN = 0;
+
+        this.pos = 0;
+        this.neg = 0;
+
+        this.qualA = 0;
+        this.qualT = 0;
+        this.qualC = 0;
+        this.qualG = 0;
+        this.qualN = 0;
+
+        this.qual = 0;
+
+        this.total = 0;
+        this.del = 0;
+        this.ins = 0;
+
+        this.threshold = alleleThreshold;
+    }
+
+    hoverText() {
+        const pos = this.posA + this.posT + this.posC + this.posG + this.posN;
+        const neg = this.negA + this.negT + this.negC + this.negG + this.negN;
+        return `${this.total} (${pos}+, ${neg}-)`
+    }
+
+    isMismatch(refBase) {
+        const threshold = this.threshold * ((this.qualityWeight && this.qual) ? this.qual : this.total);
+        let mismatchQualitySum = 0;
+        for (let base of ["A", "T", "C", "G"]) {
+            if (base !== refBase) {
+                mismatchQualitySum += ((this.qualityWeight && this.qual) ? this["qual" + base] : (this["pos" + base] + this["neg" + base]));
+            }
+        }
+        return mismatchQualitySum >= threshold
+    }
+}
+
+class DownsampledInterval {
+
+    constructor(start, end, counts) {
+        this.start = start;
+        this.end = end;
+        this.counts = counts;
+    }
+
+    popupData(genomicLocation) {
+        return [
+            {name: "start", value: this.start + 1},
+            {name: "end", value: this.end},
+            {name: "# downsampled:", value: this.counts}]
+    }
+}
+
+class SupplementaryAlignment {
+
+    constructor(rec) {
+        const tokens = rec.split(',');
+        this.chr = tokens[0];
+        this.start = parseInt(tokens[1]);
+        this.strand = tokens[2].charAt(0);
+        this.mapQ = parseInt(tokens[4]);
+        this.numMismatches = parseInt(tokens[5]);
+        this.lenOnRef = BamUtils.computeLengthOnReference(tokens[3]);
+    }
+
+    printString() {
+        return this.chr + ":" + numberFormatter$1(this.start) + "-" + numberFormatter$1(this.start + this.lenOnRef)
+            + " (" + this.strand + ") = " + numberFormatter$1(this.lenOnRef) + "bp @MAPQ: " + this.mapQ + " NM: " + this.numMismatches
+    }
+}
+
+function createSupplementaryAlignments(str) {
+    const tokens = str.split(';');
+    return tokens.filter(t => t.length > 0).map(str => new SupplementaryAlignment(str))
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const READ_PAIRED_FLAG = 0x1;
+const PROPER_PAIR_FLAG = 0x2;
+const READ_UNMAPPED_FLAG = 0x4;
+const MATE_UNMAPPED_FLAG = 0x8;
+const READ_STRAND_FLAG$2 = 0x10;
+const MATE_STRAND_FLAG$2 = 0x20;
+const FIRST_OF_PAIR_FLAG = 0x40;
+const SECOND_OF_PAIR_FLAG = 0x80;
+const SECONDARY_ALIGNMNET_FLAG = 0x100;
+const READ_FAILS_VENDOR_QUALITY_CHECK_FLAG = 0x200;
+const DUPLICATE_READ_FLAG = 0x400;
+const SUPPLEMENTARY_ALIGNMENT_FLAG = 0x800;
+const ELEMENT_SIZE = {
+    c: 1,
+    C: 1,
+    s: 2,
+    S: 2,
+    i: 4,
+    I: 4,
+    f: 4
+};
+
+const MAX_CIGAR = 50;
+
+/**
+ * readName
+ * chr
+ * cigar
+ * lengthOnRef
+ * start
+ * seq
+ * qual
+ * mq
+ * strand
+ * blocks
+ */
+
+class BamAlignment {
+
+    constructor() {
+        this.hidden = false;
+    }
+
+    isMapped() {
+        return (this.flags & READ_UNMAPPED_FLAG) === 0
+    }
+
+    isPaired() {
+        return (this.flags & READ_PAIRED_FLAG) !== 0
+    }
+
+    isProperPair() {
+        return (this.flags & PROPER_PAIR_FLAG) !== 0
+    }
+
+    isFirstOfPair() {
+        return (this.flags & FIRST_OF_PAIR_FLAG) !== 0
+    }
+
+    isSecondOfPair() {
+        return (this.flags & SECOND_OF_PAIR_FLAG) !== 0
+    }
+
+    isSecondary() {
+        return (this.flags & SECONDARY_ALIGNMNET_FLAG) !== 0
+    }
+
+    isSupplementary() {
+        return (this.flags & SUPPLEMENTARY_ALIGNMENT_FLAG) !== 0
+    }
+
+    isFailsVendorQualityCheck() {
+        return (this.flags & READ_FAILS_VENDOR_QUALITY_CHECK_FLAG) !== 0
+    }
+
+    isDuplicate() {
+        return (this.flags & DUPLICATE_READ_FLAG) !== 0
+    }
+
+    isMateMapped() {
+        return (this.flags & MATE_UNMAPPED_FLAG) === 0
+    }
+
+    isNegativeStrand() {
+        return (this.flags & READ_STRAND_FLAG$2) !== 0
+    }
+
+    isMateNegativeStrand() {
+        return (this.flags & MATE_STRAND_FLAG$2) !== 0
+    }
+
+    hasTag(tag) {
+        const tmpTags = this.tagDict || decodeTags(this.tagBA);
+        return tmpTags.hasOwnProperty(tag)
+    }
+
+    tags() {
+        if (!this.tagDict) {
+            if (this.tagBA) {
+                this.tagDict = decodeTags(this.tagBA);
+                this.tagBA = undefined;
+            } else {
+                this.tagDict = {};  // Mark so we don't try again.  The record has no tags
+            }
+        }
+        return this.tagDict
+    }
+
+    /**
+     * Does alignment (or alignment extended by soft clips) contain the genomic location?
+     *
+     * @param genomicLocation
+     * @param showSoftClips
+     * @returns {boolean|boolean}
+     */
+    containsLocation(genomicLocation, showSoftClips) {
+        const s = showSoftClips ? this.scStart : this.start;
+        const l = showSoftClips ? this.scLengthOnRef : this.lengthOnRef;
+        return (genomicLocation >= s && genomicLocation <= (s + l))
+    }
+
+    popupData(genomicLocation) {
+
+        // if the user clicks on a base next to an insertion, show just the
+        // inserted bases in a popup (like in desktop IGV).
+        const nameValues = [];
+
+        // Consert genomic location to int
+        genomicLocation = Math.floor(genomicLocation);
+
+        if (this.insertions) {
+
+            const seq = this.seq;
+
+            for (let insertion of this.insertions) {
+                var ins_start = insertion.start;
+                if (genomicLocation === ins_start || genomicLocation === ins_start - 1) {
+                    nameValues.push({name: 'Insertion', value: seq.substr(insertion.seqOffset, insertion.len)});
+                    nameValues.push({name: 'Location', value: ins_start});
+                    return nameValues
+                }
+            }
+        }
+
+        nameValues.push({name: 'Read Name', value: this.readName});
+
+        // Sample
+        // Read group
+        nameValues.push('<hr/>');
+
+        // Add 1 to genomic location to map from 0-based computer units to user-based units
+        nameValues.push({name: 'Alignment Start', value: numberFormatter$1(1 + this.start), borderTop: true});
+        nameValues.push({name: 'Read Strand', value: (true === this.strand ? '(+)' : '(-)'), borderTop: true});
+
+        // Abbreviate long cigar strings, keeping the beginning and end to show cliping
+        let cigar = this.cigar;
+        if (cigar && cigar.length > MAX_CIGAR) {
+            const half = MAX_CIGAR / 2;
+            cigar = `${cigar.substring(0, half - 2)} ... ${cigar.substring(cigar.length - half + 2)}`;
+        }
+        nameValues.push({name: 'Cigar', value: cigar});
+
+        nameValues.push({name: 'Mapping Quality', value: this.mq});
+        nameValues.push({name: 'Secondary', value: yesNo(this.isSecondary())});
+        nameValues.push({name: 'Supplementary', value: yesNo(this.isSupplementary())});
+        nameValues.push({name: 'Duplicate', value: yesNo(this.isDuplicate())});
+        nameValues.push({name: 'Failed QC', value: yesNo(this.isFailsVendorQualityCheck())});
+
+        if (this.isPaired()) {
+            nameValues.push('<hr/>');
+            nameValues.push({name: 'First in Pair', value: !this.isSecondOfPair(), borderTop: true});
+            nameValues.push({name: 'Mate is Mapped', value: yesNo(this.isMateMapped())});
+            if (this.pairOrientation) {
+                nameValues.push({name: 'Pair Orientation', value: this.pairOrientation});
+            }
+            if (this.isMateMapped()) {
+                nameValues.push({name: 'Mate Chromosome', value: this.mate.chr});
+                nameValues.push({name: 'Mate Start', value: (this.mate.position + 1)});
+                nameValues.push({name: 'Mate Strand', value: (true === this.mate.strand ? '(+)' : '(-)')});
+                nameValues.push({name: 'Insert Size', value: this.fragmentLength});
+                // Mate Start
+                // Mate Strand
+                // Insert Size
+            }
+            // First in Pair
+            // Pair Orientation
+
+        }
+
+        const tagDict = this.tags();
+
+        if (tagDict.hasOwnProperty('SA')) {
+            nameValues.push('<hr/>');
+            nameValues.push({name: 'Supplementary Alignments', value: ''});
+            const sa = createSupplementaryAlignments(tagDict['SA']);
+            if (sa) {
+                nameValues.push('<ul>');
+                for (let s of sa) {
+                    nameValues.push(`<li>${s.printString()}</li>`);
+                }
+                nameValues.push('</ul>');
+            }
+        }
+
+        const hiddenTags = new Set(['SA', 'MD']);
+        nameValues.push('<hr/>');
+        for (let key in tagDict) {
+            if (!hiddenTags.has(key)) {
+                nameValues.push({name: key, value: tagDict[key]});
+            }
+        }
+
+        nameValues.push({name: 'Hidden Tags', value: 'SA, MD'});
+
+        nameValues.push('<hr/>');
+        nameValues.push({name: 'Genomic Location: ', value: numberFormatter$1(1 + genomicLocation)});
+        nameValues.push({name: 'Read Base:', value: this.readBaseAt(genomicLocation)});
+        nameValues.push({name: 'Base Quality:', value: this.readBaseQualityAt(genomicLocation)});
+
+        return nameValues
+
+
+        function yesNo(bool) {
+            return bool ? 'Yes' : 'No'
+        }
+    }
+
+    readBaseAt(genomicLocation) {
+
+        const block = blockAtGenomicLocation(this.blocks, genomicLocation);
+        if (block) {
+            if ("*" === this.seq) {
+                return "*"
+            } else {
+                const idx = block.seqIndexAt(genomicLocation);
+                // if (idx >= 0 && idx < this.seq.length) {
+                return this.seq[idx]
+                //  }
+            }
+        } else {
+            return undefined
+        }
+    }
+
+    readBaseQualityAt(genomicLocation) {
+
+        const block = blockAtGenomicLocation(this.blocks, genomicLocation);
+        if (block) {
+            if ("*" === this.qual) {
+                return 30
+            } else {
+                const idx = block.seqIndexAt(genomicLocation);
+                if (idx >= 0 && this.qual && idx < this.qual.length) {
+                    return this.qual[idx]
+                } else {
+                    return 30
+                }
+            }
+        } else {
+            return undefined
+        }
+    }
+
+    gapSizeAt(genomicLocation) {
+        if (this.gaps) {
+            for (let gap of this.gaps) {
+                if (genomicLocation >= gap.start && genomicLocation < gap.start + gap.len) {
+                    return gap.len
+                }
+            }
+        }
+        return 0
+    }
+
+    /**
+     * Return soft clipped blocks, if they exist, keyed by alignment end (left or right)
+     */
+    softClippedBlocks() {
+        let left;
+        let right;
+        let interiorSeen;
+        for(let b of this.blocks) {
+            if('S' === b.type) {
+                if(interiorSeen) {
+                    right = b;
+                } else {
+                    left = b;
+                }
+            } else if('H' !== b.type) {
+                interiorSeen = true;
+            }
+        }
+        return {left, right}
+    }
+
+}
+
+function blockAtGenomicLocation(blocks, genomicLocation) {
+
+    for (let i = 0; i < blocks.length; i++) {
+        const block = blocks[i];
+        if (genomicLocation >= block.start && genomicLocation < block.start + block.len) {
+            return block
+        }
+    }
+    return undefined
+}
+
+function decodeTags(ba) {
+
+    let p = 0;
+    const len = ba.length;
+    const tags = {};
+
+    while (p < len) {
+        const tag = String.fromCharCode(ba[p]) + String.fromCharCode(ba[p + 1]);
+        p += 2;
+
+        const type = String.fromCharCode(ba[p++]);
+        let value;
+        if (type === 'A') {
+            value = String.fromCharCode(ba[p]);
+            p++;
+        } else if (type === 'i' || type === 'I') {
+            value = readInt$1(ba, p);
+            p += 4;
+        } else if (type === 'c') {
+            value = readInt8(ba, p);
+            p++;
+        } else if (type === 'C') {
+            value = readUInt8(ba, p);
+            p++;
+        } else if (type === 's' || type === 'S') {
+            value = readShort(ba, p);
+            p += 2;
+        } else if (type === 'f') {
+            value = readFloat(ba, p);
+            p += 4;
+        } else if (type === 'Z') {
+            value = '';
+            for (; ;) {
+                var cc = ba[p++];
+                if (cc === 0) {
+                    break
+                } else {
+                    value += String.fromCharCode(cc);
+                }
+            }
+        } else if (type === 'B') {
+            const elementType = String.fromCharCode(ba[p++]);
+            let elementSize = ELEMENT_SIZE[elementType];
+            if (elementSize === undefined) {
+                tags[tag] = `Error: unknown element type '${elementType}'`;
+                break
+            }
+            const numElements = readInt$1(ba, p);
+            p += (4 + numElements * elementSize);
+            value = '[not shown]';
+        } else {
+            //'Unknown type ' + type;
+            value = 'Error unknown type: ' + type;
+            tags[tag] = value;
+            break
+        }
+        tags[tag] = value;
+    }
+    return tags
+}
+
+
+function readInt$1(ba, offset) {
+    return (ba[offset + 3] << 24) | (ba[offset + 2] << 16) | (ba[offset + 1] << 8) | (ba[offset])
+}
+
+function readShort(ba, offset) {
+    return (ba[offset + 1] << 8) | (ba[offset])
+}
+
+function readFloat(ba, offset) {
+    const dataView = new DataView(ba.buffer);
+    return dataView.getFloat32(offset)
+}
+
+function readInt8(ba, offset) {
+    const dataView = new DataView(ba.buffer);
+    return dataView.getInt8(offset)
+}
+
+function readUInt8(ba, offset) {
+    const dataView = new DataView(ba.buffer);
+    return dataView.getUint8(offset)
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2017 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * Created by jrobinso on 4/5/18.
+ */
+
+
+class AlignmentBlock {
+    constructor(b) {
+        if (b) {
+            Object.assign(this, b);
+        }
+    }
+
+    seqIndexAt(genomicLocation) {
+        return Math.floor(genomicLocation) - this.start + this.seqOffset
+    }
+}
+
+class BamFilter {
+    constructor(options) {
+        if (!options) options = {};
+        this.vendorFailed = options.vendorFailed === undefined ? true : options.vendorFailed;
+        this.duplicates = options.duplicates === undefined ? true : options.duplicates;
+        this.secondary = options.secondary || false;
+        this.supplementary = options.supplementary || false;
+        this.mqThreshold = options.mqThreshold === undefined ? 0 : options.mqThreshold;
+        if (options.readgroups) {
+            this.readgroups = new Set(options.readgroups);
+        }
+    }
+
+    pass(alignment) {
+        if (this.vendorFailed && alignment.isFailsVendorQualityCheck()) return false
+        if (this.duplicates && alignment.isDuplicate()) return false
+        if (this.secondary && alignment.isSecondary()) return false
+        if (this.supplementary && alignment.isSupplementary()) return false
+        if (alignment.mq < this.mqThreshold) return false
+        if (this.readgroups) {
+            var rg = alignment.tags()['RG'];
+            return this.readgroups.has(rg)
+        }
+        return true
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2017 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+/**
+ * This code is based on the Biodalliance BAM reader by Thomas Down,  2011
+ *
+ * https://github.com/dasmoth/dalliance/blob/master/js/bam.js
+ */
+
+const SEQ_DECODER = ['=', 'A', 'C', 'x', 'G', 'x', 'x', 'x', 'T', 'x', 'x', 'x', 'x', 'x', 'x', 'N'];
+const CIGAR_DECODER = ['M', 'I', 'D', 'N', 'S', 'H', 'P', '=', 'X', '?', '?', '?', '?', '?', '?', '?'];
+const READ_STRAND_FLAG$1 = 0x10;
+const MATE_STRAND_FLAG$1 = 0x20;
+
+const BAM1_MAGIC_BYTES = new Uint8Array([0x42, 0x41, 0x4d, 0x01]); // BAM\1
+const BAM1_MAGIC_NUMBER = readInt(BAM1_MAGIC_BYTES, 0);
+
+const DEFAULT_ALLELE_FREQ_THRESHOLD = 0.2;
+const DEFAULT_SAMPLING_WINDOW_SIZE = 100;
+const DEFAULT_SAMPLING_DEPTH = 500;
+const MAXIMUM_SAMPLING_DEPTH = 10000;
+
+const BamUtils = {
+
+    readHeader: function (url, options, genome) {
+
+        return igvxhr.loadArrayBuffer(url, options)
+
+            .then(function (compressedBuffer) {
+
+                var header, unc, uncba;
+
+                unc = unbgzf(compressedBuffer);
+                uncba = unc;
+
+                header = BamUtils.decodeBamHeader(uncba, genome);
+
+                return header
+
+            })
+
+    },
+
+    /**
+     *
+     * @param ba  bytes to decode as a UInt8Array
+     * @param genome  optional igv genome object
+     * @returns {{ magicNumer: number, size: number, chrNames: Array, chrToIndex: ({}|*), chrAliasTable: ({}|*) }}
+     */
+    decodeBamHeader: function (ba, genome) {
+
+        var magic, samHeaderLen, samHeader, chrToIndex, chrNames, chrAliasTable, alias;
+
+        magic = readInt(ba, 0);
+        if (magic !== BAM1_MAGIC_NUMBER) {
+            throw new Error('BAM header errror: bad magic number.  This could be caused by either a corrupt or missing file.')
+        }
+
+        samHeaderLen = readInt(ba, 4);
+        samHeader = '';
+
+        for (var i = 0; i < samHeaderLen; ++i) {
+            samHeader += String.fromCharCode(ba[i + 8]);
+        }
+
+        var nRef = readInt(ba, samHeaderLen + 8);
+        var p = samHeaderLen + 12;
+
+        chrToIndex = {};
+        chrNames = [];
+        chrAliasTable = {};
+
+        for (i = 0; i < nRef; ++i) {
+            var lName = readInt(ba, p);
+            var name = '';
+            for (var j = 0; j < lName - 1; ++j) {
+                name += String.fromCharCode(ba[p + 4 + j]);
+            }
+            readInt(ba, p + lName + 4);
+            //dlog(name + ': ' + lRef);
+
+            chrToIndex[name] = i;
+            chrNames[i] = name;
+
+            if (genome) {
+                alias = genome.getChromosomeName(name);
+                chrAliasTable[alias] = name;
+            }
+
+            p = p + 8 + lName;
+        }
+
+        return {
+            magicNumber: magic,
+            size: p,
+            chrNames: chrNames,
+            chrToIndex: chrToIndex,
+            chrAliasTable: chrAliasTable
+        }
+
+    },
+
+    bam_tag2cigar: function (ba, block_end, seq_offset, lseq, al, cigarArray) {
+
+        function type2size(x) {
+            if (x === 'C' || x === 'c' || x === 'A') return 1
+            else if (x === 'S' || x === 's') return 2
+            else if (x === 'I' || x === 'i' || x === 'f') return 4
+            else return 0
+        }
+
+        // test if the real CIGAR is encoded in a CG:B,I tag
+        if (cigarArray.length !== 1 || al.start < 0) return false
+        var p = seq_offset + ((lseq + 1) >> 1) + lseq;
+        while (p + 4 < block_end) {
+            var tag = String.fromCharCode(ba[p]) + String.fromCharCode(ba[p + 1]);
+            if (tag === 'CG') break
+            var type = String.fromCharCode(ba[p + 2]);
+            if (type === 'B') { // the binary array type
+                type = String.fromCharCode(ba[p + 3]);
+                var size = type2size(type);
+                var len = readInt(ba, p + 4);
+                p += 8 + size * len;
+            } else if (type === 'Z' || type === 'H') { // 0-terminated string
+                p += 3;
+                while (ba[p++] !== 0) {
+                }
+            } else { // other atomic types
+                p += 3 + type2size(type);
+            }
+        }
+        if (p >= block_end) return false // no CG tag
+        if (String.fromCharCode(ba[p + 2]) !== 'B' || String.fromCharCode(ba[p + 3]) !== 'I') return false // not of type B,I
+
+        // now we know the real CIGAR length and its offset in the binary array
+        var cigar_len = readInt(ba, p + 4);
+        var cigar_offset = p + 8; // 4 for "CGBI" and 4 for length
+        if (cigar_offset + cigar_len * 4 > block_end) return false // out of bound
+
+        // decode CIGAR
+        var cigar = '';
+        var lengthOnRef = 0;
+        cigarArray.length = 0; // empty the old array
+        p = cigar_offset;
+        for (var k = 0; k < cigar_len; ++k, p += 4) {
+            var cigop = readInt(ba, p);
+            var opLen = (cigop >> 4);
+            var opLtr = CIGAR_DECODER[cigop & 0xf];
+            if (opLtr === 'M' || opLtr === 'EQ' || opLtr === 'X' || opLtr === 'D' || opLtr === 'N' || opLtr === '=')
+                lengthOnRef += opLen;
+            cigar = cigar + opLen + opLtr;
+            cigarArray.push({len: opLen, ltr: opLtr});
+        }
+
+        // update alignment record. We are not updating bin, as apparently it is not used.
+        al.cigar = cigar;
+        al.lengthOnRef = lengthOnRef;
+        return true
+    },
+
+    /**
+     *
+     * @param ba                 bytes to decode as an UInt8Array
+     * @param offset             offset position of ba array to start decoding
+     * @param alignmentContainer container to receive the decoded alignments
+     * @param min                minimum genomic position
+     * @param max                maximum genomic position
+     * @param chrIdx             chromosome index
+     * @param chrNames            array of chromosome names
+     * @param filter             a BamFilter object
+     *
+     * @return true if we have moved beyond the right end of the genomic range.
+     */
+    decodeBamRecords: function (ba, offset, alignmentContainer, chrNames, chrIdx, min, max, filter) {
+
+        while (offset < ba.length) {
+
+            const blockSize = readInt(ba, offset);
+            const blockEnd = offset + blockSize + 4;
+            const alignment = new BamAlignment();
+            const refID = readInt(ba, offset + 4);
+            const pos = readInt(ba, offset + 8);
+
+            if (blockEnd > ba.length) {
+                return
+            }
+            if (refID < 0) {
+                offset = blockEnd;
+                continue   // unmapped read
+            } else if (chrIdx !== undefined && (refID > chrIdx || pos > max)) {
+                return true    // off right edge, we're done
+            } else if (chrIdx !== undefined && (refID < chrIdx)) {
+                offset = blockEnd;
+                continue   // ref ID to left of start, not sure this is possible
+            }
+
+            const bin_mq_nl = readInt(ba, offset + 12);
+            const mq = (bin_mq_nl & 0xff00) >> 8;
+            const nl = bin_mq_nl & 0xff;
+
+            const flag_nc = readInt(ba, offset + 16);
+            const flag = (flag_nc & 0xffff0000) >> 16;
+            const nc = flag_nc & 0xffff;
+
+            const lseq = readInt(ba, offset + 20);
+            const mateChrIdx = readInt(ba, offset + 24);
+            const matePos = readInt(ba, offset + 28);
+            const fragmentLength = readInt(ba, offset + 32);
+
+            let readName = [];
+            for (let j = 0; j < nl - 1; ++j) {
+                readName.push(String.fromCharCode(ba[offset + 36 + j]));
+            }
+            readName = readName.join('');
+
+            let lengthOnRef = 0;
+            let cigar = '';
+            let p = offset + 36 + nl;
+            const cigarArray = [];
+            // concatenate M,=,EQ,and X
+
+            let lastCigRecord;
+            for (let c = 0; c < nc; ++c) {
+                var cigop = readInt(ba, p);
+                var opLen = (cigop >> 4);
+                var opLtr = CIGAR_DECODER[cigop & 0xf];
+                if (opLtr === 'M' || opLtr === 'EQ' || opLtr === 'X' || opLtr === 'D' || opLtr === 'N' || opLtr === '=')
+                    lengthOnRef += opLen;
+                cigar = cigar + opLen + opLtr;
+                p += 4;
+
+                // if(mOperators.has(opLtr) && mOperators.has(lastCigRecord.ltr)) {
+                //     lastCigRecord.len += opLen;
+                //     lastCigRecord.ltr = 'M'
+                // }
+                // else {
+                lastCigRecord = {len: opLen, ltr: opLtr};
+                cigarArray.push(lastCigRecord);
+                //}
+            }
+
+            alignment.chr = chrNames[refID];
+            alignment.start = pos;
+            alignment.flags = flag;
+            alignment.strand = !(flag & READ_STRAND_FLAG$1);
+            alignment.readName = readName;
+            alignment.cigar = cigar;
+            alignment.lengthOnRef = lengthOnRef;
+            alignment.fragmentLength = fragmentLength;
+            alignment.mq = mq;
+
+            BamUtils.bam_tag2cigar(ba, blockEnd, p, lseq, alignment, cigarArray);
+
+            alignment.end = alignment.start + alignment.lengthOnRef;
+
+            if (alignment.end < min) {
+                offset = blockEnd;
+                continue
+            }  // Record out-of-range "to the left", skip to next one
+
+
+            let seq = [];
+            const seqBytes = (lseq + 1) >> 1;
+            for (let j = 0; j < seqBytes; ++j) {
+                var sb = ba[p + j];
+                seq.push(SEQ_DECODER[(sb & 0xf0) >> 4]);
+                seq.push(SEQ_DECODER[(sb & 0x0f)]);
+            }
+            seq = seq.slice(0, lseq).join('');  // seq might have one extra character (if lseq is an odd number)
+            p += seqBytes;
+
+
+            const qualArray = [];
+            for (let j = 0; j < lseq; ++j) {
+                qualArray.push(ba[p + j]);
+            }
+            p += lseq;
+
+            if (mateChrIdx >= 0) {
+                alignment.mate = {
+                    chr: chrNames[mateChrIdx],
+                    position: matePos,
+                    strand: !(flag & MATE_STRAND_FLAG$1)
+                };
+            }
+
+            alignment.seq = seq;
+            alignment.qual = qualArray;
+            alignment.tagBA = new Uint8Array(ba.buffer.slice(p, blockEnd));  // decode these on demand
+
+            this.setPairOrientation(alignment);
+
+            if ((undefined === filter || filter.pass(alignment))) {
+                makeBlocks(alignment, cigarArray);
+                alignmentContainer.push(alignment);
+            }
+            offset = blockEnd;
+        }
+    },
+
+    decodeSamRecords: function (sam, alignmentContainer, chr, min, max, filter) {
+
+        var lines, i, j, len, tokens, qualString, rnext, lengthOnRef,
+            alignment, cigarArray, started;
+
+        lines = splitLines$5(sam);
+        len = lines.length;
+        started = false;
+
+        for (i = 0; i < len; i++) {
+
+            tokens = lines[i].split('\t');
+
+            alignment = new BamAlignment();
+
+            alignment.chr = tokens[2];
+            alignment.start = Number.parseInt(tokens[3]) - 1;
+            alignment.flags = Number.parseInt(tokens[1]);
+            alignment.readName = tokens[0];
+            alignment.strand = !(alignment.flags & READ_STRAND_FLAG$1);
+            alignment.mq = Number.parseInt(tokens[4]);
+            alignment.cigar = tokens[5];
+            alignment.fragmentLength = Number.parseInt(tokens[8]);
+            alignment.seq = tokens[9];
+
+            if (alignment.chr === '*' || !alignment.isMapped()) continue  // Unmapped
+
+            if (alignment.chr !== chr) {
+                if (started) break // Off the right edge, we're done
+                else continue // Possibly to the left, skip but keep looping
+            } else if (alignment.start > max) {
+                break    // off right edge, we're done
+            }
+
+            lengthOnRef = 0;
+            cigarArray = buildOperators(alignment.cigar);
+            cigarArray.forEach(function (op) {
+                var opLen = op.len;
+                var opLtr = op.ltr;
+                if (opLtr === 'M' || opLtr === 'EQ' || opLtr === 'X' || opLtr === 'D' || opLtr === 'N' || opLtr === '=')
+                    lengthOnRef += opLen;
+            });
+            alignment.lengthOnRef = lengthOnRef;
+            // TODO for lh3: parse the CG:B,I tag in SAM here
+
+            if (alignment.start + lengthOnRef < min) {
+                continue    // To the left, skip and continue
+            }
+
+
+            qualString = tokens[10];
+            alignment.qual = [];
+            for (j = 0; j < qualString.length; j++) {
+                alignment.qual[j] = qualString.charCodeAt(j) - 33;
+            }
+            alignment.tagDict = tokens.length < 11 ? {} : decodeSamTags(tokens.slice(11));
+
+            if (alignment.isMateMapped()) {
+                rnext = tokens[6];
+                alignment.mate = {
+                    chr: (rnext === '=') ? alignment.chr : rnext,
+                    position: Number.parseInt(tokens[7]),
+                    strand: !(alignment.flags & MATE_STRAND_FLAG$1)
+                };
+            }
+
+            this.setPairOrientation(alignment);
+
+            if (undefined === filter || filter.pass(alignment)) {
+                makeBlocks(alignment, cigarArray);
+                alignmentContainer.push(alignment);
+            }
+        }
+    },
+
+    setReaderDefaults: function (reader, config) {
+
+        reader.filter = new BamFilter(config.filter);
+
+        if (config.readgroup) {
+            reader.filter.readgroups = new Set([config.readgroup]);
+        }
+
+        reader.alleleFreqThreshold = config.alleleFreqThreshold === undefined ? DEFAULT_ALLELE_FREQ_THRESHOLD : config.alleleFreqThreshold;
+
+        reader.samplingWindowSize = config.samplingWindowSize === undefined ? DEFAULT_SAMPLING_WINDOW_SIZE : config.samplingWindowSize;
+        reader.samplingDepth = config.samplingDepth === undefined ? DEFAULT_SAMPLING_DEPTH : config.samplingDepth;
+
+        if (reader.samplingDepth > MAXIMUM_SAMPLING_DEPTH) {
+            console.log("Warning: attempt to set sampling depth > maximum value of " + MAXIMUM_SAMPLING_DEPTH);
+            reader.samplingDepth = MAXIMUM_SAMPLING_DEPTH;
+        }
+
+        if (config.viewAsPairs) {
+            reader.pairsSupported = true;
+        } else {
+            reader.pairsSupported = config.pairsSupported === undefined ? true : config.pairsSupported;
+        }
+    },
+
+    setPairOrientation: function (alignment) {
+
+        if (alignment.isMapped() && alignment.mate && alignment.isMateMapped() && alignment.mate.chr === alignment.chr) {
+            var s1 = alignment.strand ? 'F' : 'R';
+
+            var mate = alignment.mate;
+            var s2 = mate.strand ? 'F' : 'R';
+            var o1 = ' ';
+            var o2 = ' ';
+            if (alignment.isFirstOfPair()) {
+                o1 = '1';
+                o2 = '2';
+            } else if (alignment.isSecondOfPair()) {
+                o1 = '2';
+                o2 = '1';
+            }
+
+            var tmp = [];
+            var isize = alignment.fragmentLength;
+            var estReadLen = alignment.end - alignment.start;
+            if (isize === 0) {
+                //isize not recorded.  Need to estimate.  This calculation was validated against an Illumina
+                // -> <- library bam.
+                var estMateEnd = alignment.start < mate.position ?
+                    mate.position + estReadLen : mate.position - estReadLen;
+                isize = estMateEnd - alignment.start;
+            }
+
+            //if (isize > estReadLen) {
+            if (isize > 0) {
+                tmp[0] = s1;
+                tmp[1] = o1;
+                tmp[2] = s2;
+                tmp[3] = o2;
+
+            } else {
+                tmp[2] = s1;
+                tmp[3] = o1;
+                tmp[0] = s2;
+                tmp[1] = o2;
+            }
+            // }
+            alignment.pairOrientation = tmp.join('');
+        }
+    },
+
+    computeLengthOnReference: function (cigarString) {
+
+        let len = 0;
+        let buf = '';
+
+        for (let i = 0; i < cigarString.length; i++) {
+            const c = cigarString.charCodeAt(i);
+            if (c > 47 && c < 58) {
+                buf += cigarString.charAt(i);
+            } else {
+                switch (c) {
+                    case 78:  // N
+                    case 68:  // D
+                    case 77:  // M
+                    case 61:  // =
+                    case 88:  // X
+                        len += parseInt(buf.toString());
+                }
+                buf = '';
+            }
+        }
+        return len
+    }
+};
+
+
+/**
+ * Split the alignment record into blocks as specified in the cigarArray.  Each aligned block contains
+ * its portion of the read sequence and base quality strings.  A read sequence or base quality string
+ * of "*" indicates the value is not recorded.  In all other cases the length of the block sequence (block.seq)
+ * and quality string (block.qual) must == the block length.
+ *
+ * @param alignment
+ * @param cigarArray
+ * @returns array of blocks
+ */
+function makeBlocks(alignment, cigarArray) {
+
+    const blocks = [];
+
+    let insertions;
+    let gaps;
+    let seqOffset = 0;
+    let pos = alignment.start;
+
+    alignment.scStart = alignment.start;
+    alignment.scLengthOnRef = alignment.lengthOnRef;
+
+    for (let c of cigarArray) {
+
+        let scPos;
+        switch (c.ltr) {
+            case 'H' :
+                break // ignore hard clips
+            case 'P' :
+                break // ignore pads
+            case 'S' :
+
+                scPos = pos;
+                alignment.scLengthOnRef += c.len;
+                if (blocks.length === 0) {
+                    alignment.scStart -= c.len;
+                    scPos -= c.len;
+                }
+                blocks.push(new AlignmentBlock({
+                    start: scPos,
+                    seqOffset: seqOffset,
+                    len: c.len,
+                    type: 'S'
+                }));
+                seqOffset += c.len;
+                break // soft clip read bases
+            case 'N' :
+            case 'D':
+                if (gaps === undefined) {
+                    gaps = [];
+                }
+                gaps.push({
+                    start: pos,
+                    len: c.len,
+                    type: c.ltr
+                });
+                pos += c.len;
+                break
+            case 'I' :
+
+                if (insertions === undefined) {
+                    insertions = [];
+                }
+                insertions.push(new AlignmentBlock({
+                    start: pos,
+                    len: c.len,
+                    seqOffset: seqOffset,
+                    type: 'I'
+                }));
+                seqOffset += c.len;
+                break
+            case 'M' :
+            case 'EQ' :
+            case '=' :
+            case 'X' :
+                blocks.push(new AlignmentBlock({
+                    start: pos,
+                    seqOffset: seqOffset,
+                    len: c.len,
+                    type: 'M'
+                }));
+                seqOffset += c.len;
+                pos += c.len;
+
+                break
+
+            default :
+                console.log('Error processing cigar element: ' + c.len + c.ltr);
+        }
+    }
+
+    alignment.blocks = blocks;
+    alignment.insertions = insertions;
+    alignment.gaps = gaps;
+
+}
+
+function readInt(ba, offset) {
+    return (ba[offset + 3] << 24) | (ba[offset + 2] << 16) | (ba[offset + 1] << 8) | (ba[offset])
+}
+
+/**
+ * Build a list of cigar operators from a cigarString.  Removes padding operators and concatenates consecutive
+ * operators of the same type
+ *
+ * @param cigarString
+ * @return
+ */
+function buildOperators(cigarString) {
+
+    var operators, buffer, i, len, prevOp, next, op, nBases;
+
+    operators = [];
+    buffer = [];
+
+    // Create list of cigar operators
+    prevOp = null;
+    len = cigarString.length;
+    for (i = 0; i < len; i++) {
+        next = cigarString.charAt(i);
+        if (isDigit(next)) {
+            buffer.push(next);
+        } else {
+            op = next;
+            nBases = Number.parseInt(buffer.join(''));
+            buffer = [];
+
+            if (prevOp !== null && prevOp.ltr === op) {
+                prevOp.len += nBases;
+            } else {
+                prevOp = {len: nBases, ltr: op};
+                operators.push(prevOp);
+            }
+        }
+    }
+    return operators
+
+}
+
+function isDigit(a) {
+    var charCode = a.charCodeAt(0);
+    return (charCode >= 48 && charCode <= 57) // 0-9
+}
+
+function decodeSamTags(tags) {
+
+    var tagDict = {};
+    tags.forEach(function (tag) {
+        var tokens = tag.split(':');
+        tagDict[tokens[0]] = tokens[2];
+    });
+
+    return tagDict
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2017 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * Class for reading a bam file
+ *
+ * @param config
+ * @constructor
+ */
+class BamReaderNonIndexed {
+
+    constructor(config, genome) {
+        this.config = config;
+        this.genome = genome;
+        this.bamPath = config.url;
+        this.isDataUri = isDataURL(config.url);
+        BamUtils.setReaderDefaults(this, config);
+    }
+
+    // Return an alignment container
+    async readAlignments(chr, bpStart, bpEnd) {
+
+        if (this.alignmentCache) {
+            const header = this.header;
+            const queryChr = header.chrAliasTable.hasOwnProperty(chr) ? header.chrAliasTable[chr] : chr;
+            const qAlignments = this.alignmentCache.queryFeatures(queryChr, bpStart, bpEnd);
+            const alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, this.config);
+            for (let a of qAlignments) {
+                alignmentContainer.push(a);
+            }
+            alignmentContainer.finish();
+            return alignmentContainer
+
+        } else {
+            if (this.isDataUri) {
+                const data = decodeDataURI(this.bamPath);
+                const unc = unbgzf(data.buffer);
+                this.parseAlignments(unc);
+                return this.fetchAlignments(chr, bpStart, bpEnd)
+            } else {
+                const arrayBuffer = await igvxhr.loadArrayBuffer(this.bamPath, buildOptions(this.config));
+                const unc = unbgzf(arrayBuffer);
+                this.parseAlignments(unc);
+                return this.fetchAlignments(chr, bpStart, bpEnd)
+            }
+        }
+
+    }
+
+    parseAlignments(data) {
+        const alignments = [];
+        this.header = BamUtils.decodeBamHeader(data);
+        BamUtils.decodeBamRecords(data, this.header.size, alignments, this.header.chrNames);
+        this.alignmentCache = new FeatureCache$1(alignments, this.genome);
+    }
+
+    fetchAlignments(chr, bpStart, bpEnd) {
+        const queryChr = this.header.chrAliasTable.hasOwnProperty(chr) ? this.header.chrAliasTable[chr] : chr;
+        const features = this.alignmentCache.queryFeatures(queryChr, bpStart, bpEnd);
+        const alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, this.config);
+        for (let feature of features) {
+            alignmentContainer.push(feature);
+        }
+        alignmentContainer.finish();
+        return alignmentContainer
+    }
+
+}
+
+function decodeDataURI(dataURI) {
+
+    const split = dataURI.split(',');
+    const info = split[0].split(':')[1];
+    let dataString = split[1];
+
+    if (info.indexOf('base64') >= 0) {
+        dataString = atob(dataString);
+    } else {
+        dataString = decodeURI(dataString);
+    }
+
+    const bytes = new Uint8Array(dataString.length);
+    for (var i = 0; i < dataString.length; i++) {
+        bytes[i] = dataString.charCodeAt(i);
+    }
+    return bytes
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2017 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * Class for reading a bam file
+ *
+ * @param config
+ * @constructor
+ */
+class BamReader {
+
+    constructor(config, genome) {
+        this.config = config;
+        this.genome = genome;
+        this.bamPath = config.url;
+        this.baiPath = config.indexURL;
+        BamUtils.setReaderDefaults(this, config);
+
+        this._blockLoader = new BGZBlockLoader(config);
+    }
+
+    async readAlignments(chr, bpStart, bpEnd) {
+
+        const chrToIndex = await this.getChrIndex();
+        const queryChr = this.chrAliasTable.hasOwnProperty(chr) ? this.chrAliasTable[chr] : chr;
+        const chrId = chrToIndex[queryChr];
+        const alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, this.config);
+
+        if (chrId === undefined) {
+            return alignmentContainer
+
+        } else {
+
+            const bamIndex = await this.getIndex();
+            const chunks = bamIndex.chunksForRange(chrId, bpStart, bpEnd);
+
+            if (!chunks || chunks.length === 0) {
+                return alignmentContainer
+            }
+
+            for (let c of chunks) {
+                const ba = await this._blockLoader.getData(c.minv, c.maxv);
+                const done = BamUtils.decodeBamRecords(ba, c.minv.offset, alignmentContainer, this.indexToChr, chrId, bpStart, bpEnd, this.filter);
+                if (done) {
+                    break
+                }
+            }
+            alignmentContainer.finish();
+            return alignmentContainer
+        }
+    }
+
+    async getHeader() {
+        if (!this.header) {
+            const genome = this.genome;
+            const index = await this.getIndex();
+            let len;
+            if (index.firstBlockPosition) {
+                const bsizeOptions = buildOptions(this.config, {range: {start: index.firstBlockPosition, size: 26}});
+                const abuffer = await igvxhr.loadArrayBuffer(this.bamPath, bsizeOptions);
+                const bsize = bgzBlockSize$1(abuffer);
+                len = index.firstBlockPosition + bsize;   // Insure we get the complete compressed block containing the header
+            } else {
+                len = 64000;
+            }
+
+            const options = buildOptions(this.config, {range: {start: 0, size: len}});
+            this.header = await BamUtils.readHeader(this.bamPath, options, genome);
+        }
+        return this.header
+    }
+
+    async getIndex() {
+        const genome = this.genome;
+        if (!this.index) {
+            this.index = await loadIndex(this.baiPath, this.config, genome);
+        }
+        return this.index
+    }
+
+    async getChrIndex() {
+        if (this.chrToIndex) {
+            return this.chrToIndex
+        } else {
+            const header = await this.getHeader();
+            this.chrToIndex = header.chrToIndex;
+            this.indexToChr = header.chrNames;
+            this.chrAliasTable = header.chrAliasTable;
+            return this.chrToIndex
+
+        }
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2017 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class ShardedBamReader {
+
+    constructor(config, genome) {
+
+        this.config = config;
+        this.genome = genome;
+
+        const bamReaders = {};
+
+        config.sources.sequences.forEach(function (chr) {
+            const queryChr = genome ? genome.getChromosomeName(chr) : chr;
+            bamReaders[queryChr] = getReader(config, genome, chr);
+        });
+
+        this.bamReaders = bamReaders;
+
+        BamUtils.setReaderDefaults(this, config);
+    }
+
+    async readAlignments(chr, start, end) {
+
+        if (!this.bamReaders.hasOwnProperty(chr)) {
+            return new AlignmentContainer(chr, start, end, this.config)
+        } else {
+
+            let reader = this.bamReaders[chr];
+            const a = await reader.readAlignments(chr, start, end);
+            return a
+        }
+    }
+}
+
+function getReader(config, genome, chr) {
+    const tmp = {
+        url: config.sources.url.replace("$CHR", chr)
+    };
+    if (config.sources.indexURL) {
+        tmp.indexURL = config.sources.indexURL.replace("$CHR", chr);
+    }
+    const bamConfig = Object.assign(config, tmp);
+
+    // TODO -- support non-indexed, htsget, etc
+    return new BamReader(bamConfig, genome)
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2017 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * Class for reading bam records from an igv.js-flask server backed by pysam.  Deprecated.
+ *
+ * @param config
+ * @constructor
+ */
+const BamWebserviceReader = function (config, genome) {
+
+    this.config = config;
+    this.genome = genome;
+    BamUtils.setReaderDefaults(this, config);
+
+};
+
+// Example http://localhost:5000/alignments/?reference=/Users/jrobinso/hg19mini.fa&file=/Users/jrobinso/cram_with_crai_index.cram&region=1:100-2000
+
+BamWebserviceReader.prototype.readAlignments = function (chr, bpStart, bpEnd) {
+
+    var self = this;
+
+    return getHeader.call(self)
+
+        .then(function (header) {
+
+            var queryChr, url;
+
+            queryChr = header.chrAliasTable.hasOwnProperty(chr) ? header.chrAliasTable[chr] : chr;
+
+            url = self.config.url +
+                "?reference=" + self.config.referenceFile +
+                "&file=" + self.config.alignmentFile + "" +
+                "&region=" + queryChr + ":" + bpStart + "-" + bpEnd;
+
+
+            return igvxhr.loadString(url, buildOptions(self.config))
+
+                .then(function (sam) {
+
+                    var alignmentContainer;
+
+                    header.chrToIndex[queryChr];
+
+                    alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, self.config);
+
+                    BamUtils.decodeSamRecords(sam, alignmentContainer, queryChr, bpStart, bpEnd, self.filter);
+
+                    return alignmentContainer
+
+                })
+
+        })
+};
+
+
+// Example  http://localhost:5000/alignments/?reference=/Users/jrobinso/hg19mini.fa&file=/Users/jrobinso/cram_with_crai_index.cram&options=-b%20-H
+function getHeader() {
+
+    const self = this;
+    const genome = this.genome;
+
+    if (this.header) {
+
+        return Promise.resolve(this.header)
+
+    } else {
+
+        const url = this.config.url + "?file=" + this.config.alignmentFile + "&options=-b,-H";
+        const options = buildOptions(this.config);
+
+        return BamUtils.readHeader(url, options, genome)
+
+            .then(function (header) {
+
+                self.header = header;
+                return header
+
+            })
+    }
+
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2017 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class HtsgetBamReader extends HtsgetReader {
+
+    constructor(config, genome) {
+        super(config, genome);
+        BamUtils.setReaderDefaults(this, config);
+    }
+
+
+    async readAlignments(chr, start, end) {
+
+        if (!this.header) {
+            const compressedData = await this.readHeaderData();
+            const ba = unbgzf(compressedData.buffer);
+            this.header = BamUtils.decodeBamHeader(ba, this.genome);
+            this.chrAliasTable = new Map();
+            for (let key of Object.keys(this.header.chrAliasTable)) {
+                this.chrAliasTable.set(key, this.header.chrAliasTable[key]);
+            }
+        }
+
+        let queryChr = this.chrAliasTable.has(chr) ? this.chrAliasTable.get(chr) : chr;
+
+        const compressedData = await this.readData(queryChr, start, end);
+
+        // BAM decoding
+        const ba = unbgzf(compressedData.buffer);
+
+        const chrIdx = this.header.chrToIndex[chr];
+        const alignmentContainer = new AlignmentContainer(chr, start, end, this.config);
+        BamUtils.decodeBamRecords(ba, this.header.size, alignmentContainer, this.header.chrNames, chrIdx, start, end);
+        alignmentContainer.finish();
+
+        return alignmentContainer
+
+    }
+
+}
+
+/*! For license information please see cram-bundle.js.LICENSE.txt */
+const fn = ()=>{var e={368:function(e,t,r){var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e));}catch(e){o(e);}}function a(e){try{f(n.throw(e));}catch(e){o(e);}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t);}))).then(s,a);}f((n=n.apply(e,t||[])).next());}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const o=i(r(4105)),s=i(r(1269)),a=r(597),f=r(3427),h=r(8577);function l(e,t){if(t.some((e=>void 0===e)))throw new h.CramMalformedError("invalid .crai index file");const[r,n,i,o,s,a]=t;e[r]||(e[r]=[]),e[r].push({start:n,span:i,containerStart:o,sliceStart:s,sliceBytes:a});}t.default=class{constructor(e){this.filehandle=(0, f.open)(e.url,e.path,e.filehandle),this._parseCache=new o.default({cache:new s.default({maxSize:1}),fill:(e,t)=>this.parseIndex()});}parseIndex(){const e={};return this.filehandle.readFile().then((e=>31===e[0]&&139===e[1]?(0, a.unzip)(e):e)).then((t=>{if(t.length>4&&21578050===t.readUInt32LE(0))throw new h.CramMalformedError("invalid .crai index file. note: file appears to be a .bai index. this is technically legal but please open a github issue if you need support");let r=[],n="";for(let i=0;i<t.length;i+=1){const o=t[i];if(o>=48&&o<=57||!n&&45===o)n+=String.fromCharCode(o);else if(9===o)r.push(Number.parseInt(n,10)),n="";else if(10===o)r.push(Number.parseInt(n,10)),n="",l(e,r),r=[];else if(13!==o&&32!==o)throw new h.CramMalformedError("invalid .crai index file")}return n&&r.push(Number.parseInt(n,10)),6===r.length&&l(e,r),Object.entries(e).forEach((([t,r])=>{e[t]=r.sort(((e,t)=>e.start-t.start||e.span-t.span));})),e}))}getIndex(e={}){return this._parseCache.get("index",null,e.signal)}hasDataForReferenceSequence(e){return n(this,void 0,void 0,(function*(){return !!(yield this.getIndex())[e]}))}getEntriesForRange(e,t,r){return n(this,void 0,void 0,(function*(){const n=(yield this.getIndex())[e];if(!n)return [];const i=e=>{const n=e.start,i=e.start+e.span;return n>r?-1:i<=t?1:0},o=[];for(let e=0;e<n.length;e+=1)0===i(n[e])&&o.push(n[e]);return o}))}};},1050:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.default=class{constructor(e,t){this.parameters=e,this.dataType=t;}};},4863:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const i=r(8577),o=n(r(1050)),s=r(1074);class a extends o.default{constructor(e,t){if(super(e,t),"int"!==this.dataType)throw new i.CramUnimplementedError(`${this.dataType} decoding not yet implemented by BETA codec`)}decode(e,t,r,n){return (0, s.getBits)(t.content,n.coreBlock,this.parameters.length)-this.parameters.offset}}t.default=a;},1738:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const 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${t}`)}decode(e,t,r,n){const{blockContentId:o}=this.parameters,s=r[o];if(!s)throw new i.CramMalformedError(`no block found with content ID ${o}`);const a=n.externalBlocks.getCursor(o);return this._decodeByteArray(s,a)}_decodeByteArray(e,t){const r=e.content,{stopByte:n}=this.parameters,i=t.bytePosition;let o=t.bytePosition;for(;r[o]!==n&&o<r.length;){if(o===r.length)throw new s.CramBufferOverrunError("byteArrayStop reading beyond length of data buffer?");o+=1;}return t.bytePosition=o+1,r.subarray(i,o)}}t.default=a;},5844:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const i=r(8577),o=n(r(1050)),s=r(9488),a=r(1074);class f extends o.default{constructor(e,t){if(super(e,t),"int"===this.dataType)this._decodeData=this._decodeInt;else {if("byte"!==this.dataType)throw new i.CramUnimplementedError(`${this.dataType} decoding not yet implemented by EXTERNAL 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s.getBits)(t.content,n.coreBlock,1);)i+=1;return ((0, s.getBits)(t.content,n.coreBlock,i-1)|1<<i-1)-this.parameters.offset}}t.default=a;},1074:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.getBits=t.CramBufferOverrunError=void 0;class r extends Error{}t.CramBufferOverrunError=r,t.getBits=function(e,t,n){let i=0;if(t.bytePosition+(7-t.bitPosition+n)/8>e.length)throw new r("read error during decoding. the file seems to be truncated.");for(let r=n;r;r--)i<<=1,i|=e[t.bytePosition]>>t.bitPosition&1,t.bitPosition-=1,t.bitPosition<0&&(t.bytePosition+=1),t.bitPosition&=7;return i};},2082:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const i=r(8577),o=n(r(1050)),s=r(1074);class a extends o.default{constructor(e,t){if(super(e,t),this.codes={},this.codeBook={},this.sortedByValue=[],this.sortedCodes=[],this.sortedValuesByBitCode=[],this.sortedBitCodes=[],this.sortedBitLengthsByBitCode=[],this.bitCodeToValue=[],!["byte","int"].includes(this.dataType))throw new TypeError(`${this.dataType} decoding not yet implemented by HUFFMAN_INT codec`);this.buildCodeBook(),this.buildCodes(),this.buildCaches(),0===this.sortedCodes[0].bitLength&&(this._decode=this._decodeZeroLengthCode);}buildCodeBook(){let e=new Array(this.parameters.numCodes);for(let t=0;t<this.parameters.numCodes;t+=1)e[t]={symbol:this.parameters.symbols[t],bitLength:this.parameters.bitLengths[t]};e=e.sort(((e,t)=>e.bitLength-t.bitLength||e.symbol-t.symbol)),this.codeBook={},e.forEach((e=>{this.codeBook[e.bitLength]||(this.codeBook[e.bitLength]=[]),this.codeBook[e.bitLength].push(e.symbol);}));}buildCodes(){this.codes={};let e=0,t=-1;Object.entries(this.codeBook).forEach((([r,n])=>{const o=parseInt(r,10);n.forEach((r=>{const n={bitLength:o,value:r,bitCode:0};t+=1;const s=o-e;if(t<<=s,n.bitCode=t,e+=s,function(e){let t=e-(e>>1)&1431655765;return t=(858993459&t)+(t>>2&858993459),16843009*(t+(t>>4)&252645135)>>24}(t)>o)throw new i.CramMalformedError("Symbol out of range");this.codes[r]=n;}));}));}buildCaches(){this.sortedCodes=Object.values(this.codes).sort(((e,t)=>e.bitLength-t.bitLength||e.bitCode-t.bitCode)),this.sortedByValue=Object.values(this.codes).sort(((e,t)=>e.value-t.value)),this.sortedValuesByBitCode=this.sortedCodes.map((e=>e.value)),this.sortedBitCodes=this.sortedCodes.map((e=>e.bitCode)),this.sortedBitLengthsByBitCode=this.sortedCodes.map((e=>e.bitLength));const e=Math.max(...this.sortedBitCodes);this.bitCodeToValue=new Array(e+1).fill(-1);for(let e=0;e<this.sortedBitCodes.length;e+=1)this.bitCodeToValue[this.sortedCodes[e].bitCode]=e;}decode(e,t,r,n){return this._decode(e,t,n.coreBlock)}_decodeZeroLengthCode(){return 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n=r(8772),i=r(8577),o={BF:"int",CF:"int",RI:"int",RL:"int",AP:"int",RG:"int",MF:"int",NS:"int",NP:"int",TS:"int",NF:"int",TC:"byte",TN:"int",FN:"int",FC:"byte",FP:"int",BS:"byte",IN:"byteArray",SC:"byteArray",DL:"int",BA:"byte",BB:"byteArray",RS:"int",PD:"int",HC:"int",MQ:"int",RN:"byteArray",QS:"byte",QQ:"byteArray",TL:"int"};t.default=class{constructor(e){this.dataSeriesCodecCache={},this.tagCodecCache={},this.tagEncoding={},this.readNamesIncluded=e.preservation.RN,this.APdelta=e.preservation.AP,this.referenceRequired=!!e.preservation.RR,this.tagIdsDictionary=e.preservation.TD,this.substitutionMatrix=function(e){const t=new Array(5);for(let e=0;e<5;e+=1)t[e]=new Array(4);return t[0][e[0]>>6&3]="C",t[0][e[0]>>4&3]="G",t[0][e[0]>>2&3]="T",t[0][e[0]>>0&3]="N",t[1][e[1]>>6&3]="A",t[1][e[1]>>4&3]="G",t[1][e[1]>>2&3]="T",t[1][e[1]>>0&3]="N",t[2][e[2]>>6&3]="A",t[2][e[2]>>4&3]="C",t[2][e[2]>>2&3]="T",t[2][e[2]>>0&3]="N",t[3][e[3]>>6&3]="A",t[3][e[3]>>4&3]="C",t[3][e[3]>>2&3]="G",t[3][e[3]>>0&3]="N",t[4][e[4]>>6&3]="A",t[4][e[4]>>4&3]="C",t[4][e[4]>>2&3]="G",t[4][e[4]>>0&3]="T",t}(e.preservation.SM),this.dataSeriesEncoding=e.dataSeriesEncoding,this.tagEncoding=e.tagEncoding,this.preservation=e.preservation,this._size=e._size,this._endPosition=e._endPosition;}getCodecForTag(e){if(!this.tagCodecCache[e]){const t=this.tagEncoding[e];t&&(this.tagCodecCache[e]=(0, n.instantiateCodec)(t,"byteArray"));}return this.tagCodecCache[e]}getTagNames(e){return this.tagIdsDictionary[e]}getCodecForDataSeries(e){let t=this.dataSeriesCodecCache[e];if(void 0===t){const r=this.dataSeriesEncoding[e];if(r){const s=o[e];if(!s)throw new i.CramMalformedError(`data series name ${e} not defined in file compression header`);t=(0, n.instantiateCodec)(r,s),this.dataSeriesCodecCache[e]=t;}}return t}toJSON(){const e={};return Object.keys(this).forEach((t=>{/Cache$/.test(t)||(e[t]=this[t]);})),e}};},6284:function(e,t,r){var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e));}catch(e){o(e);}}function a(e){try{f(n.throw(e));}catch(e){o(e);}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t);}))).then(s,a);}f((n=n.apply(e,t||[])).next());}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const o=r(8577),s=r(9488),a=i(r(6601)),f=i(r(8543));class h{constructor(e,t){this.file=e,this.filePosition=t;}getHeader(){return this._readContainerHeader(this.filePosition)}getCompressionHeaderBlock(){return n(this,void 0,void 0,(function*(){if(!(yield this.getHeader()).numRecords)return null;const e=yield this.file.getSectionParsers(),t=yield this.getFirstBlock();if(void 0===t)return;if("COMPRESSION_HEADER"!==t.contentType)throw new o.CramMalformedError(`invalid content type ${t.contentType} in what is supposed to be the compression header block`);const r=(0, s.parseItem)(t.content,e.cramCompressionHeader.parser,0,t.contentPosition);return Object.assign(Object.assign({},t),{parsedContent:r})}))}getFirstBlock(){return n(this,void 0,void 0,(function*(){const e=yield this.getHeader();return this.file.readBlock(e._endPosition)}))}getCompressionScheme(){return n(this,void 0,void 0,(function*(){const e=yield this.getCompressionHeaderBlock();if(e)return new f.default(e.parsedContent)}))}getSlice(e,t){return new a.default(this,e,t)}_readContainerHeader(e){return n(this,void 0,void 0,(function*(){const t=yield this.file.getSectionParsers(),{cramContainerHeader1:r,cramContainerHeader2:n}=t,{size:i}=yield this.file.stat();if(e>=i)return;const o=Buffer.allocUnsafe(r.maxLength);yield this.file.read(o,0,r.maxLength,e);const a=(0, s.parseItem)(o,r.parser),f=(0, s.itf8Size)(a.numLandmarks);if(e+a.length>=i)return void console.warn(`${this.file}: container header at ${e} indicates that the container has length ${a.length}, which extends beyond the length of the file. Skipping this container.`);const h=Buffer.allocUnsafe(n.maxLength(a.numLandmarks));yield this.file.read(h,0,n.maxLength(a.numLandmarks),e+a._size-f);const l=(0, s.parseItem)(h,n.parser);return this.file.validateChecksums&&void 0!==l.crc32&&(yield this.file.checkCrc32(e,a._size+l._size-f-4,l.crc32,`container header beginning at position ${e}`)),Object.assign(a,l,{_size:a._size+l._size-f,_endPosition:a._size+l._size-f+e})}))}}t.default=h,"getHeader getCompressionHeaderBlock getCompressionScheme".split(" ").forEach((e=>(0, s.tinyMemoize)(h,e)));},5457:function(e,t,r){var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e));}catch(e){o(e);}}function a(e){try{f(n.throw(e));}catch(e){o(e);}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t);}))).then(s,a);}f((n=n.apply(e,t||[])).next());}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const o=r(597),s=i(r(2779)),a=i(r(1269)),f=r(8577),h=i(r(9675)),l=r(6141),u=i(r(3498)),c=i(r(6284)),d=r(3427),p=r(9488),g=r(7578);class m{constructor(e){var t;if(this.file=(0, d.open)(e.url,e.path,e.filehandle),this.validateChecksums=!0,this.fetchReferenceSequenceCallback=e.seqFetch,this.options={checkSequenceMD5:e.checkSequenceMD5,cacheSize:null!==(t=e.cacheSize)&&void 0!==t?t:2e4},this.featureCache=new a.default({maxSize:this.options.cacheSize}),function(){const e=new Uint32Array([287454020]),t=new Uint8Array(e.buffer);return 68===t[0]?0:17===t[0]?1:2}()>0)throw new Error("Detected big-endian machine, may be unable to run")}read(e,t,r,n){return this.file.read(e,t,r,n)}stat(){return this.file.stat()}getDefinition(){return n(this,void 0,void 0,(function*(){const e=Buffer.allocUnsafe(l.cramFileDefinition.maxLength);yield this.file.read(e,0,l.cramFileDefinition.maxLength,0);const t=l.cramFileDefinition.parser.parse(e).result;if(2!==t.majorVersion&&3!==t.majorVersion)throw new f.CramUnimplementedError(`CRAM version ${t.majorVersion} not supported`);return t}))}getSamHeader(){return n(this,void 0,void 0,(function*(){const e=yield this.getContainerById(0);if(!e)throw new f.CramMalformedError("file contains no containers");const t=yield e.getFirstBlock();if(void 0===t)return (0, g.parseHeaderText)("");const r=t.content,n=r.readInt32LE(0),i=r.toString("utf8",4,4+n);return this.header=i,(0, g.parseHeaderText)(i)}))}getHeaderText(){return n(this,void 0,void 0,(function*(){return yield this.getSamHeader(),this.header}))}getSectionParsers(){return n(this,void 0,void 0,(function*(){const{majorVersion:e}=yield this.getDefinition();return (0, l.getSectionParsers)(e)}))}getContainerById(e){return n(this,void 0,void 0,(function*(){const t=yield this.getSectionParsers();let r=t.cramFileDefinition.maxLength;const{size:n}=yield this.file.stat(),{cramContainerHeader1:i}=t;let o;for(let t=0;t<=e;t+=1){if(r+i.maxLength+8>=n)return;o=this.getContainerAtPosition(r);const s=yield o.getHeader();if(!s)throw new f.CramMalformedError(`container ${e} not found in file`);if(0===t){r=s._endPosition;for(let e=0;e<s.numBlocks;e+=1){const e=yield this.readBlock(r);if(void 0===e)return;r=e._endPosition;}}else r+=s._size+s.length;}return o}))}checkCrc32(e,t,r,i){return n(this,void 0,void 0,(function*(){const n=Buffer.allocUnsafe(t);yield this.file.read(n,0,t,e);const o=s.default.unsigned(n);if(o!==r)throw new f.CramMalformedError(`crc mismatch in ${i}: recorded CRC32 = ${r}, but calculated CRC32 = ${o}`)}))}containerCount(){return n(this,void 0,void 0,(function*(){const e=yield this.getSectionParsers(),{size:t}=yield this.file.stat(),{cramContainerHeader1:r}=e;let n=0,i=e.cramFileDefinition.maxLength;for(;i+r.maxLength+8<t;){const e=yield this.getContainerAtPosition(i).getHeader();if(!e)break;if(0===n){i=e._endPosition;for(let t=0;t<e.numBlocks;t+=1){const e=yield this.readBlock(i);if(void 0===e)return;i=e._endPosition;}}else i+=e._size+e.length;n+=1;}return n}))}getContainerAtPosition(e){return new c.default(this,e)}readBlockHeader(e){return n(this,void 0,void 0,(function*(){const t=yield this.getSectionParsers(),{cramBlockHeader:r}=t,{size:n}=yield this.file.stat();if(e+r.maxLength>=n)return;const i=Buffer.allocUnsafe(r.maxLength);return yield this.file.read(i,0,r.maxLength,e),(0, p.parseItem)(i,r.parser,0,e)}))}_parseSection(e,t,r=e.maxLength,i){return n(this,void 0,void 0,(function*(){let n;if(i)n=i;else {const{size:e}=yield this.file.stat();if(t+r>=e)return;n=Buffer.allocUnsafe(r),yield this.file.read(n,0,r,t);}const o=(0, p.parseItem)(n,e.parser,0,t);if(o._size!==r)throw new f.CramMalformedError(`section read error: requested size ${r} does not equal parsed size ${o._size}`);return o}))}_uncompress(e,t,r){if("gzip"===e)(0, o.unzip)(t).copy(r);else if("bzip2"===e){const e=bzip2.array(t);let n,i=bzip2.header(e),o=0;do{n=bzip2.decompress(e,i),-1!=n&&(Buffer.from(n).copy(r,o),o+=n.length,i-=n.length);}while(-1!=n)}else if("rans"===e)(0, h.default)(t,r);else if("rans4x16"===e)u.default.r4x16_uncompress(t,r);else if("arith"===e)u.default.arith_uncompress(t,r);else if("fqzcomp"===e)u.default.fqzcomp_uncompress(t,r);else {if("tok3"!==e)throw new f.CramUnimplementedError(`${e} decompression not yet implemented`);u.default.tok3_uncompress(t,r);}}readBlock(e){return n(this,void 0,void 0,(function*(){const{majorVersion:t}=yield this.getDefinition(),r=yield this.getSectionParsers(),n=yield this.readBlockHeader(e);if(void 0===n)return;const i=n._endPosition,o=Buffer.allocUnsafe(n.uncompressedSize),s=Object.assign(Object.assign({},n),{_endPosition:i,contentPosition:i,content:o});if("raw"!==n.compressionMethod){const e=Buffer.allocUnsafe(n.compressedSize);yield this.read(e,0,n.compressedSize,i),this._uncompress(n.compressionMethod,e,o);}else yield this.read(o,0,n.uncompressedSize,i);if(t>=3){const t=yield this._parseSection(r.cramBlockCrc32,i+n.compressedSize);if(void 0===t)return;s.crc32=t.crc32,this.validateChecksums&&(yield this.checkCrc32(e,n._size+n.compressedSize,t.crc32,"block data")),s._endPosition=t._endPosition,s._size=s.compressedSize+r.cramBlockCrc32.maxLength;}else s._endPosition=i+s.compressedSize,s._size=s.compressedSize;return s}))}}t.default=m,"getDefinition getSectionParsers getSamHeader".split(" ").forEach((e=>(0, p.tinyMemoize)(m,e)));},8222:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.CramRecord=void 0;const i=n(r(5457));var o=r(8631);Object.defineProperty(t,"CramRecord",{enumerable:!0,get:function(){return n(o).default}}),t.default=i.default;},8631:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.MateFlagsDecoder=t.CramFlagsDecoder=t.BamFlagsDecoder=t.MateFlags=t.CramFlags=t.BamFlags=void 0;const i=n(r(2615)),o={a:0,A:0,c:1,C:1,g:2,G:2,t:3,T:3,n:4,N:4};function s(e){const t={};for(const[r,n]of e)t["is"+n]=e=>!!(e&r),t["set"+n]=e=>e|r;return t}t.BamFlags=[[1,"Paired"],[2,"ProperlyPaired"],[4,"SegmentUnmapped"],[8,"MateUnmapped"],[16,"ReverseComplemented"],[32,"MateReverseComplemented"],[64,"Read1"],[128,"Read2"],[256,"Secondary"],[512,"FailedQc"],[1024,"Duplicate"],[2048,"Supplementary"]],t.CramFlags=[[1,"PreservingQualityScores"],[2,"Detached"],[4,"WithMateDownstream"],[8,"DecodeSequenceAsStar"]],t.MateFlags=[[1,"OnNegativeStrand"],[2,"Unmapped"]],t.BamFlagsDecoder=s(t.BamFlags),t.CramFlagsDecoder=s(t.CramFlags),t.MateFlagsDecoder=s(t.MateFlags),t.default=class{constructor({flags:e,cramFlags:t,readLength:r,mappingQuality:n,lengthOnRef:i,qualityScores:o,mateRecordNumber:s,readBases:a,readFeatures:f,mateToUse:h,readGroupId:l,readName:u,sequenceId:c,uniqueId:d,templateSize:p,alignmentStart:g,tags:m}){this.flags=e,this.cramFlags=t,this.readLength=r,this.mappingQuality=n,this.lengthOnRef=i,this.qualityScores=o,a&&(this.readBases=a),this.readGroupId=l,this.readName=u,this.sequenceId=c,this.uniqueId=d,this.templateSize=p,this.alignmentStart=g,this.tags=m,f&&(this.readFeatures=f),h&&(this.mate={flags:h.mateFlags,readName:h.mateReadName,sequenceId:h.mateSequenceId,alignmentStart:h.mateAlignmentStart}),s&&(this.mateRecordNumber=s);}isPaired(){return !!(this.flags&i.default.BAM_FPAIRED)}isProperlyPaired(){return !!(this.flags&i.default.BAM_FPROPER_PAIR)}isSegmentUnmapped(){return !!(this.flags&i.default.BAM_FUNMAP)}isMateUnmapped(){return !!(this.flags&i.default.BAM_FMUNMAP)}isReverseComplemented(){return !!(this.flags&i.default.BAM_FREVERSE)}isMateReverseComplemented(){return !!(this.flags&i.default.BAM_FMREVERSE)}isRead1(){return !!(this.flags&i.default.BAM_FREAD1)}isRead2(){return !!(this.flags&i.default.BAM_FREAD2)}isSecondary(){return !!(this.flags&i.default.BAM_FSECONDARY)}isFailedQc(){return !!(this.flags&i.default.BAM_FQCFAIL)}isDuplicate(){return !!(this.flags&i.default.BAM_FDUP)}isSupplementary(){return !!(this.flags&i.default.BAM_FSUPPLEMENTARY)}isDetached(){return !!(this.cramFlags&i.default.CRAM_FLAG_DETACHED)}hasMateDownStream(){return !!(this.cramFlags&i.default.CRAM_FLAG_MATE_DOWNSTREAM)}isPreservingQualityScores(){return !!(this.cramFlags&i.default.CRAM_FLAG_PRESERVE_QUAL_SCORES)}isUnknownBases(){return !!(this.cramFlags&i.default.CRAM_FLAG_NO_SEQ)}getReadBases(){if(!this.readBases&&this._refRegion){const e=function(e,t){if(!e.lengthOnRef&&!e.readLength)return null;if(e.isUnknownBases())return null;const r=e.alignmentStart-t.start;if(!e.readFeatures)return t.seq.substr(r,e.lengthOnRef).toUpperCase();let n="",i=r,o=0;for(;n.length<e.readLength;)if(o<e.readFeatures.length){const r=e.readFeatures[o];if("Q"===r.code||"q"===r.code)o+=1;else if(r.pos===n.length+1)if(o+=1,"b"===r.code){const e=r.data;n+=e,i+=e.length;}else "B"===r.code?(n+=r.data[0],i+=1):"X"===r.code?(n+=r.sub,i+=1):"I"===r.code?n+=r.data:"D"===r.code?i+=r.data:"i"===r.code?n+=r.data:"N"===r.code?i+=r.data:"S"===r.code?n+=r.data:"P"===r.code||r.code;else if(o<e.readFeatures.length){const r=t.seq.substr(i,e.readFeatures[o].pos-n.length-1);n+=r,i+=r.length;}}else {const r=t.seq.substr(i,e.readLength-n.length);n+=r,i+=r.length;}return n.toUpperCase()}(this,this._refRegion);e&&(this.readBases=e);}return this.readBases}getPairOrientation(){if(!this.isSegmentUnmapped()&&this.isPaired()&&!this.isMateUnmapped()&&this.mate&&this.sequenceId===this.mate.sequenceId){const e=this.isReverseComplemented()?"R":"F",t=this.isMateReverseComplemented()?"R":"F";let r=" ",n=" ";this.isRead1()?(r="1",n="2"):this.isRead2()&&(r="2",n="1");const i=[];let o=this.templateLength||this.templateSize;if(void 0===o)throw new Error("One of templateSize and templateLength must be set");return this.alignmentStart>this.mate.alignmentStart&&o>0&&(o=-o),o>0?(i[0]=e,i[1]=r,i[2]=t,i[3]=n):(i[2]=e,i[3]=r,i[0]=t,i[1]=n),i.join("")}return null}addReferenceSequence(e,t){this.readFeatures&&this.readFeatures.forEach((r=>{"X"===r.code&&function(e,t,r,n){if(!t)return;const i=n.refPos-t.start,s=t.seq.charAt(i);s&&(n.ref=s);let a=o[s];void 0===a&&(a=4);const f=r.substitutionMatrix[a][n.data];f&&(n.sub=f);}(0,e,t,r);})),!this.readBases&&e.start<=this.alignmentStart&&e.end>=this.alignmentStart+(this.lengthOnRef||this.readLength)-1&&(this._refRegion=e);}toJSON(){const e={};return Object.keys(this).forEach((t=>{"_"!==t.charAt(0)&&(e[t]=this[t]);})),e.readBases=this.getReadBases(),e}};},6141:(e,t,r)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.getSectionParsers=t.cramFileDefinition=t.isMappedSliceHeader=void 0;const n=r(9996),i=(new n.Parser).itf8(),o={parser:(new n.Parser).string("magic",{length:4}).uint8("majorVersion").uint8("minorVersion").string("fileId",{length:20,stripNull:!0}),maxLength:26};t.cramFileDefinition=o;const s={parser:(new n.Parser).uint8("compressionMethod",{formatter:e=>{const t=["raw","gzip","bzip2","lzma","rans","rans4x16","arith","fqzcomp","tok3"][e];if(!t)throw new Error(`compression method number ${e} not implemented`);return t}}).uint8("contentType",{formatter:e=>{const t=["FILE_HEADER","COMPRESSION_HEADER","MAPPED_SLICE_HEADER","UNMAPPED_SLICE_HEADER","EXTERNAL_DATA","CORE_DATA"][e];if(!t)throw new Error(`invalid block content type id ${e}`);return t}}).itf8("contentId").itf8("compressedSize").itf8("uncompressedSize"),maxLength:17},a={parser:(new n.Parser).uint32("crc32"),maxLength:4},f=(new n.Parser).itf8("size").buffer("ents",{length:"size",formatter:e=>{function t(t,r){const n=e.toString("utf8",t,r),i=[];for(let e=0;e<n.length;e+=3)i.push(n.substr(e,3));return i}var r,n=[],i=0;for(r=0;r<e.length;r+=1)e[r]||(n.push(t(i,r)),i=r+1);return r>i&&n.push(t(i,r)),n}}),h=(new n.Parser).uint8(null,{formatter:e=>!!e}),l=(new n.Parser).itf8("mapSize").itf8("mapCount").array("ents",{length:"mapCount",type:(new n.Parser).string("key",{length:2,stripNull:!1}).choice("value",{tag:"key",choices:{MI:h,UI:h,PI:h,RN:h,AP:h,RR:h,SM:(new n.Parser).array(null,{type:"uint8",length:5}),TD:(new n.Parser).nest(null,{type:f,formatter:e=>e.ents})}})});function u(e){const t={};for(let r=0;r<e.ents.length;r+=1){const{key:n,value:i}=e.ents[r];t[n]&&console.warn(`duplicate key ${n} in map`),t[n]=i;}return t}const c={cramFileDefinition:o,cramBlockHeader:s,cramBlockCrc32:a};t.isMappedSliceHeader=function(e){return "number"==typeof e.refSeqId};const d={cramUnmappedSliceHeader(e){let t=0,r=(new n.Parser).itf8("numRecords");return t+=5,e>=3?(r=r.ltf8("recordCounter"),t+=9):2===e&&(r=r.itf8("recordCounter"),t+=5),r=r.itf8("numBlocks").itf8("numContentIds").array("contentIds",{type:i,length:"numContentIds"}),t+=10,e>=2&&(r=r.array("md5",{type:"uint8",length:16}),t+=16),{parser:r,maxLength:e=>t+5*e}},cramMappedSliceHeader(e){let t=(new n.Parser).itf8("refSeqId").itf8("refSeqStart").itf8("refSeqSpan").itf8("numRecords"),r=20;return e>=3?(t=t.ltf8("recordCounter"),r+=9):2===e&&(t=t.itf8("recordCounter"),r+=5),t=t.itf8("numBlocks").itf8("numContentIds").array("contentIds",{type:i,length:"numContentIds"}).itf8("refBaseBlockId"),r+=15,e>=2&&(t=t.array("md5",{type:"uint8",length:16}),r+=16),{parser:t,maxLength:e=>r+5*e}},cramEncoding:e=>({parser:(new n.Parser).namely("cramEncoding").itf8("codecId").itf8("parametersBytes").choice("parameters",{tag:"codecId",choices:{0:new n.Parser,1:(new n.Parser).itf8("blockContentId"),2:(new n.Parser).itf8("offset").itf8("M"),3:n.Parser.start().itf8("numCodes").array("symbols",{length:"numCodes",type:i}).itf8("numLengths").array("bitLengths",{length:"numLengths",type:i}),4:n.Parser.start().nest("lengthsEncoding",{type:"cramEncoding"}).nest("valuesEncoding",{type:"cramEncoding"}),5:(new n.Parser).uint8("stopByte").itf8("blockContentId"),6:(new n.Parser).itf8("offset").itf8("length"),7:(new n.Parser).itf8("offset").itf8("K"),8:(new n.Parser).itf8("offset").itf8("log2m"),9:(new n.Parser).itf8("offset")}})}),cramDataSeriesEncodingMap(e){return (new n.Parser).itf8("mapSize").itf8("mapCount").array("ents",{length:"mapCount",type:(new n.Parser).string("key",{length:2,stripNull:!1}).nest("value",{type:this.cramEncoding(e).parser})})},cramTagEncodingMap(e){return (new n.Parser).itf8("mapSize").itf8("mapCount").array("ents",{length:"mapCount",type:(new n.Parser).itf8("key",{formatter:e=>String.fromCharCode(e>>16&255)+String.fromCharCode(e>>8&255)+String.fromCharCode(255&e)}).nest("value",{type:this.cramEncoding(e).parser})})},cramCompressionHeader(e){let t=new n.Parser;return t=t.nest("preservation",{type:l,formatter:u}).nest("dataSeriesEncoding",{type:this.cramDataSeriesEncodingMap(e),formatter:u}).nest("tagEncoding",{type:this.cramTagEncodingMap(e),formatter:u}),{parser:t}},cramContainerHeader1(e){let t=(new n.Parser).int32("length").itf8("refSeqId").itf8("refSeqStart").itf8("alignmentSpan").itf8("numRecords"),r=24;return e>=3?(t=t.ltf8("recordCounter"),r+=9):2===e&&(t=t.itf8("recordCounter"),r+=5),e>1&&(t=t.ltf8("numBases"),r+=9),t=t.itf8("numBlocks").itf8("numLandmarks"),r+=10,{parser:t,maxLength:r}},cramContainerHeader2(e){let t=(new n.Parser).itf8("numLandmarks").array("landmarks",{type:(new n.Parser).itf8(),length:"numLandmarks"}),r=0;return e>=3&&(t=t.uint32("crc32"),r=4),{parser:t,maxLength:e=>5+5*e+r}}};t.getSectionParsers=function(e){const t=Object.assign({},c);return Object.keys(d).forEach((r=>{t[r]=d[r](e);})),t};},3757:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const i=n(r(3720)),o=r(8577),s=r(8631),a=r(6141);function f(e){let t="";for(let r=0;r<e.length&&0!==e[r];r++)t+=String.fromCharCode(e[r]);return t}function h(e,t){if("Z"===e)return f(t);if("A"===e)return String.fromCharCode(t[0]);if("I"===e)return i.default.fromBytesLE(t).toNumber();if("i"===e)return new Int32Array(t.buffer)[0];if("s"===e)return new Int16Array(t.buffer)[0];if("S"===e)return new Uint16Array(t.buffer)[0];if("c"===e)return new Int8Array(t.buffer)[0];if("C"===e)return t[0];if("f"===e)return new Float32Array(t.buffer)[0];if("H"===e)return Number.parseInt(f(t).replace(/^0x/,""),16);if("B"===e)return function(e){const t=String.fromCharCode(e[0]),r=Int32Array.from(e.slice(1))[0],n=new Array(r);if(e=e.slice(5),"c"===t){const t=new Int8Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e];}else if("C"===t){const t=new Uint8Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e];}else if("s"===t){const t=new Int16Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e];}else if("S"===t){const t=new Uint16Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e];}else if("i"===t){const t=new Int32Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e];}else if("I"===t){const t=new Uint32Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e];}else {if("f"!==t)throw new Error("unknown type: "+t);{const t=new Float32Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e];}}return n}(t);throw new o.CramMalformedError(`Unrecognized tag type ${e}`)}t.default=function(e,t,r,n,i,l,u,c,d){let p=t("BF");const g=t("CF");if(!(0, a.isMappedSliceHeader)(n.parsedContent))throw new Error;let m;m=c>1&&-2===n.parsedContent.refSeqId?t("RI"):n.parsedContent.refSeqId;const y=t("RL");let b=t("AP");r.APdelta&&(b+=u.lastAlignmentStart),u.lastAlignmentStart=b;const v=t("RG");let w,_,B,E;if(r.readNamesIncluded&&(w=f(t("RN"))),s.CramFlagsDecoder.isDetached(g)){const e=t("MF");let n;r.readNamesIncluded||(n=f(t("RN")),w=n);const i=t("NS"),o=t("NP");(e||i>-1)&&(_={mateFlags:e,mateSequenceId:i,mateAlignmentStart:o,mateReadName:n}),B=t("TS"),s.MateFlagsDecoder.isUnmapped(e)&&(p=s.BamFlagsDecoder.setMateUnmapped(p)),s.MateFlagsDecoder.isOnNegativeStrand(e)&&(p=s.BamFlagsDecoder.setMateReverseComplemented(p));}else s.CramFlagsDecoder.isWithMateDownstream(g)&&(E=t("NF")+d+1);const S=t("TL");if(S<0)throw new o.CramMalformedError("invalid TL index");const A={},C=r.getTagNames(S),R=C.length;for(let t=0;t<R;t+=1){const n=C[t],s=n.substr(0,2),a=n.substr(2,1),f=r.getCodecForTag(n);if(!f)throw new o.CramMalformedError(`no codec defined for auxiliary tag ${n}`);const c=f.decode(e,i,l,u);A[s]=h(a,c);}let k,x,I,M,F;if(s.BamFlagsDecoder.isSegmentUnmapped(p))if(s.CramFlagsDecoder.isDecodeSequenceAsStar(g))F=null,M=null;else {const e=new Array(y);for(let r=0;r<e.length;r+=1)e[r]=t("BA");if(F=String.fromCharCode(...e),s.CramFlagsDecoder.isPreservingQualityScores(g)){M=new Array(y);for(let r=0;r<e.length;r+=1)M[r]=t("QS");}}else {const e=t("FN");if(e&&(k=function(e,t,r,n,i){let s=0,a=e-1;const f=new Array(t);function h([e,t]){const n=r(t);if("character"===e)return String.fromCharCode(n);if("string"===e){let e="";for(let t=0;t<n.byteLength;t++)e+=String.fromCharCode(n[t]);return e}return "numArray"===e?n.toArray():n}for(let e=0;e<t;e+=1){const t=String.fromCharCode(r("FC")),n=r("FP"),l={B:["character","BA"],S:["string",i>1?"SC":"IN"],X:["number","BS"],D:["number","DL"],I:["string","IN"],i:["character","BA"],b:["string","BB"],q:["numArray","QQ"],Q:["number","QS"],H:["number","HC"],P:["number","PD"],N:["number","RS"]}[t];if(!l)throw new o.CramMalformedError(`invalid read feature code "${t}"`);let u=h(l);const c={B:["number","QS"]}[t];c&&(u=[u,h(c)]),s+=n;const d=s;a+=n;const p=a;"D"===t||"N"===t?a+=u:"I"===t||"S"===t?a-=u.length:"i"===t&&(a-=1),f[e]={code:t,pos:d,refPos:p,data:u};}return f}(b,e,t,0,c)),x=y,k)for(const{code:e,data:t}of k)"D"===e||"N"===e?x+=t:"I"===e||"S"===e?x-=t.length:"i"===e&&(x-=1);if(Number.isNaN(x)&&(console.warn(`${w||`${m}:${b}`} record has invalid read features`),x=y),I=t("MQ"),s.CramFlagsDecoder.isPreservingQualityScores(g)){M=new Array(y);for(let e=0;e<M.length;e++)M[e]=t("QS");}}return {readLength:y,sequenceId:m,cramFlags:g,flags:p,alignmentStart:b,readGroupId:v,readName:w,mateToUse:_,templateSize:B,mateRecordNumber:E,readFeatures:k,lengthOnRef:x,mappingQuality:I,qualityScores:M,readBases:F,tags:A}};},6601:function(e,t,r){var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e));}catch(e){o(e);}}function a(e){try{f(n.throw(e));}catch(e){o(e);}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t);}))).then(s,a);}f((n=n.apply(e,t||[])).next());}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const o=r(8577),s=r(9488),a=i(r(2615)),f=i(r(3757)),h=i(r(8631)),l=r(6141),u=r(1074);function c(e,t,r,n){if(!n)throw new o.CramMalformedError("could not resolve intra-slice mate pairs, file seems truncated or malformed");const i=!!(n.mate||void 0!==n.mateRecordNumber&&n.mateRecordNumber!==t);r.readName||(r.readName=String(r.uniqueId),n.readName=r.readName),r.mate={sequenceId:n.sequenceId,alignmentStart:n.alignmentStart,uniqueId:n.uniqueId},n.readName&&(r.mate.readName=n.readName),n.mate||void 0!==n.mateRecordNumber||(n.mate={sequenceId:r.sequenceId,alignmentStart:r.alignmentStart,uniqueId:r.uniqueId},r.readName&&(n.mate.readName=r.readName)),r.flags|=a.default.BAM_FPAIRED,n.flags&a.default.BAM_FUNMAP&&(r.flags|=a.default.BAM_FMUNMAP),r.flags&a.default.BAM_FUNMAP&&(n.flags|=a.default.BAM_FMUNMAP),n.flags&a.default.BAM_FREVERSE&&(r.flags|=a.default.BAM_FMREVERSE),r.flags&a.default.BAM_FREVERSE&&(n.flags|=a.default.BAM_FMREVERSE),void 0===r.templateLength&&(i?function(e,t,r){const n=function t(r){const n=[r];if(void 0!==r.mateRecordNumber&&r.mateRecordNumber>=0){const i=e[r.mateRecordNumber];if(!i)throw new o.CramMalformedError("intra-slice mate record not found, this file seems malformed");n.push(...t(i));}return n}(r),i=n.map((e=>e.alignmentStart)),s=n.map((e=>e.alignmentStart+e.readLength-1)),a=Math.max(...s)-Math.min(...i)+1;a>=0&&n.forEach((e=>{if(void 0!==e.templateLength)throw new o.CramMalformedError("mate pair group has some members that have template lengths already, this file seems malformed");e.templateLength=a;}));}(e,0,r):function(e,t){const r=Math.min(e.alignmentStart,t.alignmentStart),n=Math.max(e.alignmentStart+e.readLength-1,t.alignmentStart+t.readLength-1)-r+1;e.templateLength=n,t.templateLength=n;}(r,n)),delete r.mateRecordNumber;}class d{constructor(e,t,r){this.container=e,this.containerPosition=t,this.file=e.file;}getHeader(){return n(this,void 0,void 0,(function*(){const e=yield this.file.getSectionParsers(),t=yield this.container.getHeader(),r=yield this.file.readBlock(t._endPosition+this.containerPosition);if(void 0===r)throw new Error;if("MAPPED_SLICE_HEADER"===r.contentType){const n=(0, s.parseItem)(r.content,e.cramMappedSliceHeader.parser,0,t._endPosition);return Object.assign(Object.assign({},r),{parsedContent:n})}if("UNMAPPED_SLICE_HEADER"===r.contentType){const n=(0, s.parseItem)(r.content,e.cramUnmappedSliceHeader.parser,0,t._endPosition);return Object.assign(Object.assign({},r),{parsedContent:n})}throw new o.CramMalformedError(`error reading slice header block, invalid content type ${r.contentType}`)}))}getBlocks(){return n(this,void 0,void 0,(function*(){const e=yield this.getHeader();let t=e._endPosition;const r=new Array(e.parsedContent.numBlocks);for(let e=0;e<r.length;e+=1){const n=yield this.file.readBlock(t);if(void 0===n)throw new Error;r[e]=n,t=r[e]._endPosition;}return r}))}getCoreDataBlock(){return n(this,void 0,void 0,(function*(){return (yield this.getBlocks())[0]}))}_getBlocksContentIdIndex(){return n(this,void 0,void 0,(function*(){const e=yield this.getBlocks(),t={};return e.forEach((e=>{"EXTERNAL_DATA"===e.contentType&&(t[e.contentId]=e);})),t}))}getBlockByContentId(e){return n(this,void 0,void 0,(function*(){return (yield this._getBlocksContentIdIndex())[e]}))}getReferenceRegion(){return n(this,void 0,void 0,(function*(){const e=(yield this.getHeader()).parsedContent;if(!(0, l.isMappedSliceHeader)(e))throw new Error;if(e.refSeqId<0)return;const t=yield this.container.getCompressionScheme();if(void 0===t)throw new Error;if(e.refBaseBlockId>=0){const t=yield this.getBlockByContentId(e.refBaseBlockId);if(!t)throw new o.CramMalformedError("embedded reference specified, but reference block does not exist");return {seq:t.data.toString("utf8"),start:e.refSeqStart,end:e.refSeqStart+e.refSeqSpan-1,span:e.refSeqSpan}}if(t.referenceRequired||this.file.fetchReferenceSequenceCallback){if(!this.file.fetchReferenceSequenceCallback)throw new Error("reference sequence not embedded, and seqFetch callback not provided, cannot fetch reference sequence");const t=yield this.file.fetchReferenceSequenceCallback(e.refSeqId,e.refSeqStart,e.refSeqStart+e.refSeqSpan-1);if(t.length!==e.refSeqSpan)throw new o.CramArgumentError("seqFetch callback returned a reference sequence of the wrong length");return {seq:t,start:e.refSeqStart,end:e.refSeqStart+e.refSeqSpan-1,span:e.refSeqSpan}}}))}getAllRecords(){return this.getRecords((()=>!0))}_fetchRecords(){return n(this,void 0,void 0,(function*(){const{majorVersion:e}=yield this.file.getDefinition(),t=yield this.container.getCompressionScheme();if(void 0===t)throw new Error;const r=yield this.getHeader();if(void 0===r)throw new Error;const n=yield this._getBlocksContentIdIndex();if(e>1&&this.file.options.checkSequenceMD5&&(0, l.isMappedSliceHeader)(r.parsedContent)&&r.parsedContent.refSeqId>=0&&"0000000000000000"!==r.parsedContent.md5.join("")){const e=yield this.getReferenceRegion();if(e){const{seq:t,start:n,end:i}=e,a=(0, s.sequenceMD5)(t),f=r.parsedContent.md5.map((e=>(e<16?"0":"")+e.toString(16))).join("");if(a!==f)throw new o.CramMalformedError(`MD5 checksum reference mismatch for ref ${r.parsedContent.refSeqId} pos ${n}..${i}. recorded MD5: ${f}, calculated MD5: ${a}`)}}const i=yield this.getCoreDataBlock(),a={lastAlignmentStart:(0, l.isMappedSliceHeader)(r.parsedContent)?r.parsedContent.refSeqStart:0,coreBlock:{bitPosition:7,bytePosition:0},externalBlocks:{map:new Map,getCursor(e){let t=this.map.get(e);return void 0===t&&(t={bitPosition:7,bytePosition:0},this.map.set(e,t)),t}}},d=e=>{const r=t.getCodecForDataSeries(e);if(!r)throw new o.CramMalformedError(`no codec defined for ${e} data series`);return r.decode(this,i,n,a)};let p=new Array(r.parsedContent.numRecords);for(let o=0;o<p.length;o+=1)try{const s=(0,f.default)(this,d,t,r,i,n,a,e,o);p[o]=new h.default(Object.assign(Object.assign({},s),{uniqueId:r.contentPosition+r.parsedContent.recordCounter+o+1}));}catch(e){if(e instanceof u.CramBufferOverrunError){console.warn("read attempted beyond end of buffer, file seems truncated."),p=p.filter((e=>!!e));break}throw e}for(let e=0;e<p.length;e+=1){const{mateRecordNumber:t}=p[e];void 0!==t&&t>=0&&c(p,e,p[e],p[t]);}return p}))}getRecords(e){return n(this,void 0,void 0,(function*(){const t=this.container.filePosition+this.containerPosition;let r=this.file.featureCache.get(t.toString());r||(r=this._fetchRecords(),this.file.featureCache.set(t.toString(),r));const i=(yield r).filter(e);if(i.length&&this.file.fetchReferenceSequenceCallback){const e=yield this.getHeader();if((0, l.isMappedSliceHeader)(e.parsedContent)&&(e.parsedContent.refSeqId>=0||-2===e.parsedContent.refSeqId)){const t=e.parsedContent.refSeqId>=0?e.parsedContent.refSeqId:void 0,r=yield this.container.getCompressionScheme();if(void 0===r)throw new Error;const o={};for(let e=0;e<i.length;e+=1){const r=void 0!==t?t:i[e].sequenceId;let n=o[r];n||(n={id:r,start:i[e].alignmentStart,end:-1/0,seq:null},o[r]=n);const s=i[e].alignmentStart+(i[e].lengthOnRef||i[e].readLength)-1;s>n.end&&(n.end=s),i[e].alignmentStart<n.start&&(n.start=i[e].alignmentStart);}yield Promise.all(Object.values(o).map((e=>n(this,void 0,void 0,(function*(){-1!==e.id&&e.start<=e.end&&(e.seq=yield this.file.fetchReferenceSequenceCallback(e.id,e.start,e.end));})))));for(let e=0;e<i.length;e+=1){const n=o[void 0!==t?t:i[e].sequenceId];if(n&&n.seq){const t=n.seq;i[e].addReferenceSequence(Object.assign(Object.assign({},n),{seq:t}),r);}}}}return i}))}}t.default=d,"getHeader getBlocks _getBlocksContentIdIndex".split(" ").forEach((e=>(0, s.tinyMemoize)(d,e)));},9488:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.sequenceMD5=t.tinyMemoize=t.parseItem=t.parseItf8=t.itf8Size=void 0;const i=n(r(2568)),o=r(1074);t.itf8Size=function(e){return -128&e?-16384&e?-2097152&e?-268435456&e?5:4:3:2:1},t.parseItf8=function(e,t){let r=t;const n=e[r];let i;if(n<128?(i=n,r+=1):n<192?(i=16383&(n<<8|e[r+1]),r+=2):n<224?(i=2097151&(n<<16|e[r+1]<<8|e[r+2]),r+=3):n<240?(i=268435455&(n<<24|e[r+1]<<16|e[r+2]<<8|e[r+3]),r+=4):(i=(15&n)<<28|e[r+1]<<20|e[r+2]<<12|e[r+3]<<4|15&e[r+4],r+=5),r>e.length)throw new o.CramBufferOverrunError("Attempted to read beyond end of buffer; this file seems truncated.");return [i,r-t]},t.parseItem=function(e,t,r=0,n=0){const{offset:i,result:o}=t.parse(e);return Object.assign(Object.assign({},o),{_endPosition:i+n,_size:i-r})},t.tinyMemoize=function(e,t){const r=e.prototype[t],n=`_memo_${t}`;e.prototype[t]=function(){if(!(n in this)){const e=r.call(this);this[n]=e,Promise.resolve(e).catch((()=>{delete this[n];}));}return this[n]};},t.sequenceMD5=function(e){return (0, i.default)(e.toUpperCase().replace(/[^\x21-\x7e]/g,""))};},8577:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.CramArgumentError=t.CramSizeLimitError=t.CramMalformedError=t.CramUnimplementedError=t.CramError=void 0;class r extends Error{}t.CramError=r;class n extends Error{}t.CramUnimplementedError=n,t.CramMalformedError=class extends r{},t.CramSizeLimitError=class extends r{},t.CramArgumentError=class extends r{};},5590:function(e,t,r){var n=this&&this.__createBinding||(Object.create?function(e,t,r,n){void 0===n&&(n=r);var i=Object.getOwnPropertyDescriptor(t,r);i&&!("get"in i?!t.__esModule:i.writable||i.configurable)||(i={enumerable:!0,get:function(){return t[r]}}),Object.defineProperty(e,n,i);}:function(e,t,r,n){void 0===n&&(n=r),e[n]=t[r];}),i=this&&this.__setModuleDefault||(Object.create?function(e,t){Object.defineProperty(e,"default",{enumerable:!0,value:t});}:function(e,t){e.default=t;}),o=this&&this.__importStar||function(e){if(e&&e.__esModule)return e;var t={};if(null!=e)for(var r in e)"default"!==r&&Object.prototype.hasOwnProperty.call(e,r)&&n(t,e,r);return i(t,e),t},s=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.CramRecord=t.CraiIndex=t.IndexedCramFile=t.CramFile=void 0;const a=o(r(8222));t.CramFile=a.default,Object.defineProperty(t,"CramRecord",{enumerable:!0,get:function(){return a.CramRecord}});const f=s(r(946));t.IndexedCramFile=f.default;const h=s(r(368));t.CraiIndex=h.default;},946:function(e,t,r){var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e));}catch(e){o(e);}}function a(e){try{f(n.throw(e));}catch(e){o(e);}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t);}))).then(s,a);}f((n=n.apply(e,t||[])).next());}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const o=r(8577),s=i(r(8222));t.default=class{constructor(e){if(e.cram?this.cram=e.cram:this.cram=new s.default({url:e.cramUrl,path:e.cramPath,filehandle:e.cramFilehandle,seqFetch:e.seqFetch,checkSequenceMD5:e.checkSequenceMD5,cacheSize:e.cacheSize}),!(this.cram instanceof s.default))throw new Error("invalid arguments: no cramfile");if(this.index=e.index,!this.index.getEntriesForRange)throw new Error("invalid arguments: not an index");this.fetchSizeLimit=e.fetchSizeLimit||3e6;}getRecordsForRange(e,t,r,i={}){return n(this,void 0,void 0,(function*(){if(i.viewAsPairs=i.viewAsPairs||!1,i.pairAcrossChr=i.pairAcrossChr||!1,i.maxInsertSize=i.maxInsertSize||2e5,"string"==typeof e)throw new o.CramUnimplementedError("string sequence names not yet supported");const n=e,s=yield this.index.getEntriesForRange(n,t,r),a=s.map((e=>e.sliceBytes)).reduce(((e,t)=>e+t),0);if(a>this.fetchSizeLimit)throw new o.CramSizeLimitError(`data size of ${a.toLocaleString()} bytes exceeded fetch size limit of ${this.fetchSizeLimit.toLocaleString()} bytes`);const f=n=>n.sequenceId===e&&n.alignmentStart<=r&&void 0!==n.lengthOnRef&&n.alignmentStart+n.lengthOnRef-1>=t,h=yield Promise.all(s.map((e=>this.getRecordsInSlice(e,f))));let l=Array.prototype.concat(...h);if(i.viewAsPairs){const e={},t={};for(let r=0;r<l.length;r+=1){const n=l[r].readName;if(void 0===n)throw new Error;const i=l[r].uniqueId;e[n]||(e[n]=0),e[n]+=1,t[i]=1;}const r={};Object.entries(e).forEach((([e,t])=>{1===t&&(r[e]=!0);}));const o=[];for(let e=0;e<l.length;e+=1){const t=l[e],s=t.readName;if(void 0===s)throw new Error;if(r[s]&&t.mate&&(t.mate.sequenceId===n||i.pairAcrossChr)&&Math.abs(t.alignmentStart-t.mate.alignmentStart)<i.maxInsertSize){const e=this.index.getEntriesForRange(t.mate.sequenceId,t.mate.alignmentStart,t.mate.alignmentStart+1);o.push(e);}}const s=yield Promise.all(o);let a=[];for(let e=0;e<s.length;e+=1)a.push(...s[e]);a=a.sort(((e,t)=>e.toString().localeCompare(t.toString()))).filter(((e,t,r)=>!t||e.toString()!==r[t-1].toString()));const 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this.next&&(e+=this.next.sizeOf()),e},d.prototype.parse=function(e){return this.compiled||this.compile(),this.compiled(e,this.constructorFn,a)},d.prototype.setNextParser=function(e,t,r){var n=new d;return n.type=c[e],n.varName=t,n.options=r||n.options,n.endian=this.endian,this.head?this.head.next=n:this.next=n,this.head=n,this},d.prototype.generate=function(e){this.type&&(this["generate".concat(this.type)](e),this.generateAssert(e));var t=e.generateVariable(this.varName);return this.options.formatter&&this.generateFormatter(e,t,this.options.formatter),this.generateNext(e)},d.prototype.generateAssert=function(e){if(this.options.assert){var t=e.generateVariable(this.varName);switch(n(this.options.assert)){case"function":e.pushCode("if (!({0}).call(vars, {1})) {",this.options.assert,t);break;case"number":e.pushCode("if ({0} !== {1}) {",this.options.assert,t);break;case"string":e.pushCode('if ("{0}" !== {1}) {',this.options.assert,t);break;default:throw new Error("Assert option supports only strings, numbers and assert functions.")}e.generateError('"Assert error: {0} is " + {0}',t),e.pushCode("}");}},d.prototype.generateNext=function(e){return this.next&&(e=this.next.generate(e)),e},Object.keys(f).forEach((function(e){d.prototype["generate".concat(e)]=function(t){"UInt64"===e?t.pushCode("{0} = Long.fromBytes(buffer.slice(offset,offset+8), true, this.endian === 'le').toNumber();",t.generateVariable(this.varName),e):"Int64"===e?t.pushCode("{0} = Long.fromBytes(buffer.slice(offset,offset+8), false, this.endian === 'le').toNumber();",t.generateVariable(this.varName),e):t.pushCode("{0} = buffer.read{1}(offset);",t.generateVariable(this.varName),e),t.pushCode("offset += {0};",f[e]);};})),d.prototype.generateBit=function(e){var t=JSON.parse(JSON.stringify(this));if(t.varName=e.generateVariable(t.varName),e.bitFields.push(t),!this.next||this.next&&["Bit","Nest"].indexOf(this.next.type)<0){var r=0;e.bitFields.forEach((function(e){r+=e.options.length;}));var n=e.generateTmpVariable();if(r<=8)e.pushCode("var {0} = buffer.readUInt8(offset);",n),r=8;else if(r<=16)e.pushCode("var {0} = buffer.readUInt16BE(offset);",n),r=16;else if(r<=24){var i=e.generateTmpVariable(),o=e.generateTmpVariable();e.pushCode("var {0} = buffer.readUInt16BE(offset);",i),e.pushCode("var {0} = buffer.readUInt8(offset + 2);",o),e.pushCode("var {2} = ({0} << 8) | {1};",i,o,n),r=24;}else {if(!(r<=32))throw new Error("Currently, bit field sequence longer than 4-bytes is not supported.");e.pushCode("var {0} = buffer.readUInt32BE(offset);",n),r=32;}e.pushCode("offset += {0};",r/8);var s=0,a="be"===this.endian;e.bitFields.forEach((function(t){e.pushCode("{0} = {1} >> {2} & {3};",t.varName,n,a?r-s-t.options.length:s,(1<<t.options.length)-1),s+=t.options.length;})),e.bitFields=[];}},d.prototype.generateSkip=function(e){var t=e.generateOption(this.options.length);e.pushCode("offset += {0};",t);},d.prototype.generateString=function(e){var t=e.generateVariable(this.varName),r=e.generateTmpVariable();this.options.length&&this.options.zeroTerminated?(e.pushCode("var {0} = offset;",r),e.pushCode("while(buffer.readUInt8(offset++) !== 0 && offset - {0}  < {1});",r,this.options.length),e.pushCode("{0} = buffer.toString('{1}', {2}, offset - {2} < {3} ? offset - 1 : offset);",t,this.options.encoding,r,this.options.length)):this.options.length?(e.pushCode("{0} = buffer.toString('{1}', offset, offset + {2});",t,this.options.encoding,e.generateOption(this.options.length)),e.pushCode("offset += {0};",e.generateOption(this.options.length))):this.options.zeroTerminated?(e.pushCode("var {0} = offset;",r),e.pushCode("while(buffer.readUInt8(offset++) !== 0);"),e.pushCode("{0} = buffer.toString('{1}', {2}, offset - 1);",t,this.options.encoding,r)):this.options.greedy&&(e.pushCode("var {0} = offset;",r),e.pushCode("while(buffer.length > offset++);"),e.pushCode("{0} = buffer.toString('{1}', {2}, offset);",t,this.options.encoding,r)),this.options.stripNull&&e.pushCode("{0} = {0}.replace(/\\x00+$/g, '')",t);},d.prototype.generateBuffer=function(e){"eof"===this.options.readUntil?e.pushCode("{0} = buffer.slice(offset);",e.generateVariable(this.varName)):(e.pushCode("{0} = buffer.slice(offset, offset + {1});",e.generateVariable(this.varName),e.generateOption(this.options.length)),e.pushCode("offset += {0};",e.generateOption(this.options.length))),this.options.clone&&e.pushCode("{0} = Buffer.from({0});",e.generateVariable(this.varName));},d.prototype.generateArray=function(e){var t=e.generateOption(this.options.length),r=e.generateOption(this.options.lengthInBytes),n=this.options.type,i=e.generateTmpVariable(),o=e.generateVariable(this.varName),s=e.generateTmpVariable(),a=this.options.key,u="string"==typeof a;if(u?e.pushCode("{0} = {};",o):e.pushCode("{0} = [];",o),"function"==typeof this.options.readUntil?e.pushCode("do {"):"eof"===this.options.readUntil?e.pushCode("for (var {0} = 0; offset < buffer.length; {0}++) {",i):void 0!==r?e.pushCode("for (var {0} = offset; offset - {0} < {1}; ) {",i,r):e.pushCode("for (var {0} = 0; {0} < {1}; {0}++) {",i,t),"string"==typeof n)if(h[n]){var p=e.generateTmpVariable();e.pushCode("var {0} = {1}(offset);",p,l+n),e.pushCode("var {0} = {1}.result; offset = {1}.offset;",s,p),n!==this.alias&&e.addReference(n);}else e.pushCode("var {0} = buffer.read{1}(offset);",s,c[n]),e.pushCode("offset += {0};",f[c[n]]);else n instanceof d&&(e.pushCode("var {0} = {};",s),e.pushScope(s),n.generate(e),e.popScope());u?e.pushCode("{0}[{2}.{1}] = {2};",o,a,s):e.pushCode("{0}.push({1});",o,s),e.pushCode("}"),"function"==typeof this.options.readUntil&&e.pushCode(" while (!({0}).call(this, {1}, buffer.slice(offset)));",this.options.readUntil,s);},d.prototype.generateChoiceCase=function(e,t,r){if("string"==typeof r)if(h[r]){var n=e.generateTmpVariable();e.pushCode("var {0} = {1}(offset);",n,l+r),e.pushCode("{0} = {1}.result; offset = {1}.offset;",e.generateVariable(this.varName),n),r!==this.alias&&e.addReference(r);}else e.pushCode("{0} = buffer.read{1}(offset);",e.generateVariable(this.varName),c[r]),e.pushCode("offset += {0};",f[c[r]]);else r instanceof d&&(e.pushPath(t),r.generate(e),e.popPath(t));},d.prototype.generateChoice=function(e){var t=e.generateOption(this.options.tag);this.varName&&e.pushCode("{0} = {};",e.generateVariable(this.varName)),e.pushCode("switch({0}) {",t),Object.keys(this.options.choices).forEach((function(t){var r=this.options.choices[t];Number.isNaN(parseInt(t,10))?e.pushCode("case '{0}':",t):e.pushCode("case {0}:",t),this.generateChoiceCase(e,this.varName,r),e.pushCode("break;");}),this),e.pushCode("default:"),this.options.defaultChoice?this.generateChoiceCase(e,this.varName,this.options.defaultChoice):e.generateError('"Met undefined tag value " + {0} + " at choice"',t),e.pushCode("}");},d.prototype.generateNest=function(e){var t=e.generateVariable(this.varName);if(this.options.type instanceof d)this.varName&&e.pushCode("{0} = {};",t),e.pushPath(this.varName),this.options.type.generate(e),e.popPath(this.varName);else if(h[this.options.type]){var r=e.generateTmpVariable();e.pushCode("var {0} = {1}(offset);",r,l+this.options.type),e.pushCode("{0} = {1}.result; offset = {1}.offset;",t,r),this.options.type!==this.alias&&e.addReference(this.options.type);}},d.prototype.generateFormatter=function(e,t,r){"function"==typeof r&&e.pushCode("{0} = ({1}).call(this, {0});",t,r);},d.prototype.isInteger=function(){return !!this.type.match(/U?Int[8|16|32][BE|LE]?|Bit\d+/)},d.prototype.itf8=function(e,t){return this.setNextParser("itf8",e,t)},d.prototype.itf8=function(e,t){return this.setNextParser("itf8",e,t)},d.prototype.generateItf8=function(e){var t=e.generateVariable(this.varName),r=e.generateTmpVariable();e.pushCode("\n    var ".concat(r," = buffer[offset];\n    if (").concat(r," < 0x80) {\n      ").concat(t," = ").concat(r,";\n      offset += 1;\n    } else if (").concat(r," < 0xc0) {\n      ").concat(t," = ((").concat(r,"<<8) | buffer[offset+1]) & 0x3fff;\n      offset += 2;\n    } else if (").concat(r," < 0xe0) {\n      ").concat(t," = ((").concat(r,"<<16) | (buffer[offset+1]<< 8) |  buffer[offset+2]) & 0x1fffff;\n      offset += 3;\n    } else if (").concat(r," < 0xf0) {\n      ").concat(t," = ((").concat(r,"<<24) | (buffer[offset+1]<<16) | (buffer[offset+2]<<8) | buffer[offset+3]) & 0x0fffffff;\n      offset += 4\n    } else {\n      ").concat(t," = ((").concat(r," & 0x0f)<<28) | (buffer[offset+1]<<20) | (buffer[offset+2]<<12) | (buffer[offset+3]<<4) | (buffer[offset+4] & 0x0f);\n      // x=((0xff & 0x0f)<<28) | (0xff<<20) | (0xff<<12) | (0xff<<4) | (0x0f & 0x0f);\n      // TODO *val_p = uv < 0x80000000UL ? uv : -((int32_t) (0xffffffffUL - uv)) - 1;\n      offset += 5\n    }\n  "));},d.prototype.ltf8=function(e,t){return this.setNextParser("ltf8",e,t)},d.prototype.generateLtf8=function(e){var t=e.generateVariable(this.varName),r=e.generateTmpVariable();e.pushCode("\n  var ".concat(r," = buffer[offset];\n  if (").concat(r," < 0x80) {\n    ").concat(t," = ").concat(r,";\n    offset += 1;\n  } else if (").concat(r," < 0xc0) {\n    ").concat(t," = ((buffer[offset]<<8) | buffer[offset+1]) & 0x3fff;\n    offset += 2;\n  } else if (").concat(r," < 0xe0) {\n    ").concat(t," = ((buffer[offset]<<16) | (buffer[offset+1]<<8) | buffer[offset+2]) & 0x1fffff;\n    ").concat(t," = (((").concat(r," & 63) << 16) | buffer.readUInt16LE(offset + 1));\n    offset += 3;\n  } else if (").concat(r," < 0xf0) {\n    ").concat(t," = ((buffer[offset]<<24) | (buffer[offset+1]<<16) | (buffer[offset+2]<<8) | buffer[offset+3]) & 0x0fffffff;\n    offset += 4;\n  } else if (").concat(r," < 0xf8) {\n    ").concat(t," = (((buffer[offset] & 15) * Math.pow(2,32))) +\n      (buffer[offset+1]<<24) | (buffer[offset+2]<<16 | buffer[offset+3]<<8 | buffer[offset+4])\n    // TODO *val_p = uv < 0x80000000UL ? uv : -((int32_t) (0xffffffffUL - uv)) - 1;\n    offset += 5;\n  } else if (").concat(r," < 0xfc) {\n    ").concat(t," = ((((buffer[offset] & 7) << 8) | buffer[offset+1] )) * Math.pow(2,32) +\n      (buffer[offset+2]<<24) | (buffer[offset+3]<<16 | buffer[offset+4]<<8 | buffer[offset+5])\n    offset += 6;\n  } else if (").concat(r," < 0xfe) {\n    ").concat(t," = ((((buffer[offset] & 3) << 16) | buffer[offset+1]<<8 | buffer[offset+2])) * Math.pow(2,32) +\n      (buffer[offset+3]<<24) | (buffer[offset+4]<<16 | buffer[offset+5]<<8 | buffer[offset+6])\n    offset += 7;\n  } else if (").concat(r," < 0xff) {\n    ").concat(t," = Long.fromBytesBE(buffer.slice(offset+1,offset+8));\n    if (").concat(t,".greaterThan(Number.MAX_SAFE_INTEGER) || ").concat(t,".lessThan(Number.MIN_SAFE_INTEGER))\n      throw new Error('integer overflow')\n    ").concat(t," = ").concat(t,".toNumber()\n    offset += 8;\n  } else {\n    ").concat(t," = Long.fromBytesBE(buffer.slice(offset+1,offset+9));\n    if (").concat(t,".greaterThan(Number.MAX_SAFE_INTEGER) || ").concat(t,".lessThan(Number.MIN_SAFE_INTEGER))\n      throw new Error('integer overflow')\n    ").concat(t," = ").concat(t,".toNumber()\n    offset += 9;\n  }\n  "));},t.Parser=d;},2961:(e,t)=>{function r(e){return r="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e},r(e)}var n=function(){this.code="",this.scopes=[["vars"]],this.isAsync=!1,this.bitFields=[],this.tmpVariableCount=0,this.references={};};n.prototype.generateVariable=function(e){var t=[];for(Array.prototype.push.apply(t,this.scopes[this.scopes.length-1]);/^\$parent\./.test(e);)t.pop(),e=e.replace(/^\$parent\./,"");return e&&t.push(e),t.join(".")},n.prototype.generateOption=function(e){switch(r(e)){case"number":return e.toString();case"string":return this.generateVariable(e);case"function":return "(".concat(e,").call(").concat(this.generateVariable(),", vars)");default:return}},n.prototype.generateError=function(){var e=Array.prototype.slice.call(arguments),t=n.interpolate.apply(this,e);this.isAsync?this.pushCode("return process.nextTick(function() { callback(new Error(".concat(t,"), vars); });")):this.pushCode("throw new Error(".concat(t,");"));},n.prototype.generateTmpVariable=function(){return "$tmp".concat(this.tmpVariableCount++)},n.prototype.pushCode=function(){var e=Array.prototype.slice.call(arguments);this.code+="".concat(n.interpolate.apply(this,e),"\n");},n.prototype.pushPath=function(e){e&&this.scopes[this.scopes.length-1].push(e);},n.prototype.popPath=function(e){e&&this.scopes[this.scopes.length-1].pop();},n.prototype.pushScope=function(e){this.scopes.push([e]);},n.prototype.popScope=function(){this.scopes.pop();},n.prototype.addReference=function(e){this.references[e]||(this.references[e]={resolved:!1,requested:!1});},n.prototype.markResolved=function(e){this.references[e].resolved=!0;},n.prototype.markRequested=function(e){e.forEach(function(e){this.references[e].requested=!0;}.bind(this));},n.prototype.getUnresolvedReferences=function(){var e=this.references;return Object.keys(this.references).filter((function(t){return !e[t].resolved&&!e[t].requested}))},n.interpolate=function(e){var t=/{\d+}/g,r=e.match(t),n=Array.prototype.slice.call(arguments,1);return r&&r.forEach((function(t){var r=parseInt(t.substr(1,t.length-2),10);e=e.replace(t,n[r].toString());})),e},t._=n;},22:e=>{e.exports.runInThisContext=function(e){return new Function("code","return eval(code);").call(globalThis,e)};},445:(e,t,r)=>{const n=r(7381),i=r(9260),o=r(576),s=r(4693),a=128;e.exports=class{decode(e){return this.stream=new i(e),this.decodeStream(this.stream)}decodeStream(e,t=0){var r=this.stream.ReadByte();16&r||(t=this.stream.ReadUint7());var n,i=t,o=1&r;if(8&r)return this.decodeStripe(this.stream,t);if(r&a&&([n,i]=this.decodePackMeta(this.stream)),32&r)var s=this.decodeCat(this.stream,i);else s=4&r?this.decodeExt(this.stream,i):64&r?o?this.decodeRLE1(this.stream,i):this.decodeRLE0(this.stream,i):o?this.decode1(this.stream,i):this.decode0(this.stream,i);return r&a&&(s=this.decodePack(s,n,t)),s}encode(e,t){if(this.stream=new i("",0,1.1*e.length+100),this.stream.WriteByte(t),16&t||this.stream.WriteUint7(e.length),8&t)return Buffer.concat([this.stream.buf.slice(0,this.stream.pos),this.encodeStripe(this.stream,e,t>>8)]);var r,n=1&t,o=e.length;return t&a&&([r,e,o]=this.encodePack(e)),t&a&&this.stream.WriteStream(r),64&t?n?this.encodeRLE1(e,o,this.stream):this.encodeRLE0(e,o,this.stream):n?this.encode1(e,o,this.stream):this.encode0(e,o,this.stream)}decode0(e,t){var r=new Buffer.allocUnsafe(t),i=e.ReadByte();0==i&&(i=256);var s=new o(i),a=new n(e);a.RangeStartDecode(e);for(var f=0;f<t;f++)r[f]=s.ModelDecode(e,a);return r}encode0(e,t,r){for(var i=0,s=0;s<t;s++)i<e[s]&&(i=e[s]);i++;var a=new o(i);r.WriteByte(i);var f=new n(r);for(s=0;s<t;s++)a.ModelEncode(r,f,e[s]);return f.RangeFinishEncode(r),r.buf.slice(0,r.pos)}decode1(e,t){var r=new Buffer.allocUnsafe(t),i=e.ReadByte();0==i&&(i=256);for(var s=new Array(i),a=0;a<i;a++)s[a]=new o(i);var f=new n(e);f.RangeStartDecode(e);var h=0;for(a=0;a<t;a++)r[a]=s[h].ModelDecode(e,f),h=r[a];return r}encode1(e,t,r){for(var i=0,s=0;s<t;s++)i<e[s]&&(i=e[s]);i++;var a=new Array(i);for(s=0;s<i;s++)a[s]=new o(i);r.WriteByte(i);var f=new n(r),h=0;for(s=0;s<t;s++)a[h].ModelEncode(r,f,e[s]),h=e[s];return f.RangeFinishEncode(r),r.buf.slice(0,r.pos)}decodeExt(e,t){var r=new Buffer.allocUnsafe(t),n=s.array(e.buf.slice(e.pos)),i=s.header(n),o=0;do{var a=s.decompress(n,i);-1!=a&&(Buffer.from(a).copy(r,o),o+=a.length,i-=a.length);}while(-1!=a);return r}encodeExt(e,t){}decodeRLE0(e,t){var r=new Buffer.allocUnsafe(t),i=e.ReadByte();0==i&&(i=256);for(var s=new o(i),a=new Array(258),f=0;f<=257;f++)a[f]=new o(4);var h=new n(e);for(h.RangeStartDecode(e),f=0;f<t;){r[f]=s.ModelDecode(e,h);for(var l=a[r[f]].ModelDecode(e,h),u=l,c=256;3==l;)l=a[c].ModelDecode(e,h),c=257,u+=l;for(var d=1;d<=u;d++)r[f+d]=r[f];f+=u+1;}return r}encodeRLE0(e,t,r){for(var i=0,s=0;s<t;s++)i<e[s]&&(i=e[s]);i++;var a=new o(i),f=new Array(258);for(s=0;s<=257;s++)f[s]=new o(4);r.WriteByte(i);var h=new n(r);for(s=0;s<t;){a.ModelEncode(r,h,e[s]);for(var l=1;s+l<t&&e[s+l]==e[s];)l++;l--;var u=e[s];e[s],s+=l+1;var c=l>=3?3:l;for(f[u].ModelEncode(r,h,c),l-=c,u=256;3==c;)c=l>=3?3:l,f[u].ModelEncode(r,h,c),u=257,l-=c;}return h.RangeFinishEncode(r),r.buf.slice(0,r.pos)}decodeRLE1(e,t){var r=new Buffer.allocUnsafe(t),i=e.ReadByte();0==i&&(i=256);for(var s=new Array(i),a=0;a<i;a++)s[a]=new o(i);var f=new Array(258);for(a=0;a<=257;a++)f[a]=new o(4);var h=new n(e);h.RangeStartDecode(e);var l=0;for(a=0;a<t;){r[a]=s[l].ModelDecode(e,h),l=r[a];for(var u=f[r[a]].ModelDecode(e,h),c=u,d=256;3==u;)u=f[d].ModelDecode(e,h),d=257,c+=u;for(var p=1;p<=c;p++)r[a+p]=r[a];a+=c+1;}return r}encodeRLE1(e,t,r){for(var i=0,s=0;s<t;s++)i<e[s]&&(i=e[s]);i++;var a=new Array(i);for(s=0;s<i;s++)a[s]=new o(i);var f=new Array(258);for(s=0;s<=257;s++)f[s]=new o(4);r.WriteByte(i);for(var h=new n(r),l=(s=0,0);s<t;){a[l].ModelEncode(r,h,e[s]);for(var u=1;s+u<t&&e[s+u]==e[s];)u++;u--;var c=e[s];l=e[s],s+=u+1;var d=u>=3?3:u;for(f[c].ModelEncode(r,h,d),u-=d,c=256;3==d;)d=u>=3?3:u,f[c].ModelEncode(r,h,d),c=257,u-=d;}return h.RangeFinishEncode(r),r.buf.slice(0,r.pos)}decodePackMeta(e){this.nsym=e.ReadByte();for(var t=new Array(this.nsym),r=0;r<this.nsym;r++)t[r]=e.ReadByte();return [t,e.ReadUint7()]}decodePack(e,t,r){var n=new Buffer.allocUnsafe(r);if(this.nsym<=1)for(var i=0;i<r;i++)n[i]=t[0];else if(this.nsym<=2){i=0;for(var o=0;i<r;i++){if(i%8==0)var s=e[o++];n[i]=t[1&s],s>>=1;}}else if(this.nsym<=4)for(i=0,o=0;i<r;i++)i%4==0&&(s=e[o++]),n[i]=t[3&s],s>>=2;else {if(!(this.nsym<=16))return e;for(i=0,o=0;i<r;i++)i%2==0&&(s=e[o++]),n[i]=t[15&s],s>>=4;}return n}packMeta(e){for(var t=new i("",0,1024),r=new Array(256),n=0;n<e.length;n++)r[e[n]]=1;var o=0;for(n=0;n<256;n++)r[n]&&(r[n]=++o);for(t.WriteByte(o),n=0;n<256;n++)r[n]&&(t.WriteByte(n),r[n]--);return [t,r,o]}encodePack(e){var t,r,n;[t,r,n]=this.packMeta(e);var i=e.length,o=0;if(n<=1)return t.WriteUint7(0),[t,new Buffer.allocUnsafe(0),0];if(n<=2){for(var s=new Buffer.allocUnsafe(Math.floor((i+7)/8)),a=(o=0,0);o<(-8&i);o+=8,a++)s[a]=(r[e[o+0]]<<0)+(r[e[o+1]]<<1)+(r[e[o+2]]<<2)+(r[e[o+3]]<<3)+(r[e[o+4]]<<4)+(r[e[o+5]]<<5)+(r[e[o+6]]<<6)+(r[e[o+7]]<<7);if(o<i){s[a]=0;for(var f=0;o<i;)s[a]|=r[e[o++]]<<f,f++;a++;}return t.WriteUint7(a),[t,s,s.length]}if(n<=4){for(s=new Buffer.allocUnsafe(Math.floor((i+3)/4)),o=0,a=0;o<(-4&i);o+=4,a++)s[a]=(r[e[o+0]]<<0)+(r[e[o+1]]<<2)+(r[e[o+2]]<<4)+(r[e[o+3]]<<6);if(o<i){for(s[a]=0,f=0;o<i;)s[a]|=r[e[o++]]<<f,f+=2;a++;}return t.WriteUint7(a),[t,s,s.length]}if(n<=16){for(s=new Buffer.allocUnsafe(Math.floor((i+1)/2)),o=0,a=0;o<(-2&i);o+=2,a++)s[a]=(r[e[o+0]]<<0)+(r[e[o+1]]<<4);return o<i&&(s[a++]=r[e[o++]]),t.WriteUint7(a),[t,s,s.length]}return t.WriteUint7(e.length),[t,e,e.length]}encodeStripe(e,t,r){0==r&&(r=4);for(var n=new Array(r),o=new Array(r),s=0;s<r;s++)o[s]=Math.floor(t.length/r)+(t.length%r>s),n[s]=new Array(o[s]);for(var a=0,f=0;f<t.length;f+=r,a++)for(var h=0;h<r;h++)a<n[h].length&&(n[h][a]=t[f+h]);var l=new Array(r),u=0;for(s=0;s<r;s++){var c=this.encode(n[s],0),d=this.encode(n[s],1);l[s]=d.length<c.length?d:c,u+=l[s].length;}var p=new i("",0,u+5*r+1);for(p.WriteByte(r),s=0;s<r;s++)p.WriteUint7(l[s].length);for(s=0;s<r;s++)p.WriteData(l[s],l[s].length);return p.buf.slice(0,p.buf.pos)}decodeStripe(e,t){for(var r=e.ReadByte(),n=new Array(r),i=new Array(r),o=0;o<r;o++)n[o]=e.ReadUint7();var s=new Array(r);for(o=0;o<r;o++)i[o]=Math.floor(t/r)+(t%r>o),s[o]=this.decodeStream(e,i[o]);var a=new Buffer.allocUnsafe(t);for(o=0;o<r;o++)for(var f=0;f<i[o];f++)a[f*r+o]=s[o][f];return a}decodeCat(e,t){for(var r=new Buffer.allocUnsafe(t),n=0;n<t;n++)r[n]=e.ReadByte();return r}};},7381:e=>{e.exports=class{constructor(e){this.low=0,this.range=4294967295,this.code=0,this.FFnum=0,this.carry=0,this.cache=0;}RangeStartDecode(e){for(var t=0;t<5;t++)this.code=(this.code<<8)+e.ReadByte();this.code&=4294967295,this.code>>>=0;}RangeGetFrequency(e){return this.range=Math.floor(this.range/e),Math.floor(this.code/this.range)}RangeDecode(e,t,r,n){for(this.code-=t*this.range,this.range*=r;this.range<1<<24;)this.range*=256,this.code=256*this.code+e.ReadByte();}RangeShiftLow(e){if(this.low<4278190080|this.carry){for(e.WriteByte(this.cache+this.carry);this.FFnum;)e.WriteByte(this.carry-1),this.FFnum--;this.cache=this.low>>>24,this.carry=0;}else this.FFnum++;this.low<<=8,this.low>>>=0;}RangeEncode(e,t,r,n){var i=this.low;for(this.range=Math.floor(this.range/n),this.low+=t*this.range,this.low>>>=0,this.range*=r,this.low<i&&(0!=this.carry&&console.log("ERROR: Multiple carry"),this.carry=1);this.range<1<<24;)this.range*=256,this.RangeShiftLow(e);}RangeFinishEncode(e){for(var t=0;t<5;t++)this.RangeShiftLow(e);}};},576:e=>{e.exports=class{constructor(e=256){this.total_freq=e,this.max_sym=e-1,this.S=new Array,this.F=new Array;for(var t=0;t<=this.max_sym;t++)this.S[t]=t,this.F[t]=1;}ModelDecode(e,t){for(var r=t.RangeGetFrequency(this.total_freq),n=0,i=0;n+this.F[i]<=r;)n+=this.F[i++];t.RangeDecode(e,n,this.F[i],this.total_freq),this.F[i]+=16,this.total_freq+=16,this.total_freq>65519&&this.ModelRenormalise();var o=this.S[i];if(i>0&&this.F[i]>this.F[i-1]){var s=this.F[i];this.F[i]=this.F[i-1],this.F[i-1]=s,s=this.S[i],this.S[i]=this.S[i-1],this.S[i-1]=s;}return o}ModelRenormalise(){this.total_freq=0;for(var e=0;e<=this.max_sym;e++)this.F[e]-=Math.floor(this.F[e]/2),this.total_freq+=this.F[e];}ModelEncode(e,t,r){for(var n=0,i=0;this.S[i]!=r;i++)n+=this.F[i];if(t.RangeEncode(e,n,this.F[i],this.total_freq),this.F[i]+=16,this.total_freq+=16,this.total_freq>65519&&this.ModelRenormalise(),r=this.S[i],i>0&&this.F[i]>this.F[i-1]){var o=this.F[i];this.F[i]=this.F[i-1],this.F[i-1]=o,o=this.S[i],this.S[i]=this.S[i-1],this.S[i-1]=o;}}};},5260:(e,t,r)=>{const n=r(9260),i=r(576),o=r(7381);function s(e,t,r){for(var n=0,i=0,o=-1,s=new Array(1024);i<r;){var a=e.ReadByte();if(s[n++]=a,i+=a,a==o){var f=e.ReadByte();for(i+=a*f;f--;)s[n++]=a;}o=a;}var h=0;for(n=0,i=0;i<r;){var l=0;do{var u=s[n++];l+=u;}while(255==u);for(;l--;)t[i++]=h;h++;}}function a(e,t,r){var n=e.context;return t.qctx=(t.qctx<<e.qshift)+e.qtab[r],n+=(t.qctx&(1<<e.qbits)-1)<<e.qloc,e.do_pos&&(n+=e.ptab[Math.min(t.p,1023)]<<e.ploc),e.do_delta&&(n+=e.dtab[Math.min(t.delta,255)]<<e.dloc,t.delta+=t.prevq!=r?1:0,t.prevq=r),e.do_sel&&(n+=t.s<<e.sloc),t.p--,65535&n}function f(e){var t={};t.context=e.ReadUint16(),t.pflags=e.ReadByte(),t.do_dedup=2&t.pflags,t.fixed_len=4&t.pflags,t.do_sel=8&t.pflags,t.do_qmap=16&t.pflags,t.do_pos=32&t.pflags,t.do_delta=64&t.pflags,t.do_qtab=128&t.pflags,t.max_sym=e.ReadByte();var r=e.ReadByte();if(t.qbits=r>>4,t.qshift=15&r,r=e.ReadByte(),t.qloc=r>>4,t.sloc=15&r,r=e.ReadByte(),t.ploc=r>>4,t.dloc=15&r,t.qmap=new Array(256),16&t.pflags)for(var n=0;n<t.max_sym;n++)t.qmap[n]=e.ReadByte();else for(n=0;n<256;n++)t.qmap[n]=n;if(t.qtab=new Array(1024),t.qbits>0&&128&t.pflags)s(e,t.qtab,256);else for(n=0;n<256;n++)t.qtab[n]=n;return t.ptab=new Array(1024),32&t.pflags&&s(e,t.ptab,1024),t.dtab=new Array(256),64&t.pflags&&s(e,t.dtab,256),t}function h(e,t,r,n,i,o){r.max_sel>0?i.s=n.sel.ModelDecode(e,t):i.s=0,i.x=r.stab[i.s];var s=r.params[i.x];if(s.fixed_len>=0){var a=n.len[0].ModelDecode(e,t);a|=n.len[1].ModelDecode(e,t)<<8,a|=n.len[2].ModelDecode(e,t)<<16,a|=n.len[3].ModelDecode(e,t)<<24,s.fixed_len>0&&(s.fixed_len=-a);}else a=-s.fixed_len;i.len=a,r.do_rev&&(o[i.rec]=n.rev.ModelDecode(e,t)),i.is_dup=0,2&s.pflags&&n.dup.ModelDecode(e,t)&&(i.is_dup=1),i.p=a,i.delta=0,i.qctx=0,i.prevq=0,i.rec++;}function l(e,t,r){for(var n=0,i=0,o=new Array(2*r),s=0;n<r;){for(var a=n;n<r&&t[n]==i;)n++;var f=n-a;do{var h=Math.min(255,f);o[s++]=h,f-=h;}while(255==h);i++;}var l=-1,u=new Array(2*r),c=0;for(n=0;n<s;){var d=o[n++];if(u[c++]=d,d==l){for(a=n;n<s&&o[n]==l&&n-a<255;)n++;u[c++]=n-a;}else l=d;}e.WriteData(u,c);}e.exports={decode:function(e,t){return function(e,t){var r=e.ReadUint7(),n=function(e){var t={max_sym:0};if(5==e.ReadByte()){var r=e.ReadByte(),n=1&r?e.ReadByte():1,i=r.nparam>1?r.nparam-1:0,o=new Array(256);if(2&r)i=e.ReadByte(),s(e,o,256);else {for(var a=0;a<n;a++)o[a]=a;for(;a<256;a++)o[a]=n-1;}t.do_rev=4&r,t.stab=o,t.max_sel=i,t.params=new Array(t.nparam);for(var h=0;h<n;h++)t.params[h]=f(e),t.max_sym<t.params[h].max_sym&&(t.max_sym=t.params[h].max_sym);return t}console.error("Invalid FQZComp version number");}(e);if(n){var l=n.params,u=new Array(t.length),c=function(e){var t={};t.qual=new Array(65536);for(var r=0;r<65536;r++)t.qual[r]=new i(e.max_sym+1);for(t.len=new Array(4),r=0;r<4;r++)t.len[r]=new i(256);return t.rev=new i(2),t.dup=new i(2),e.max_sel>0&&(t.sel=new i(e.max_sel+1)),t}(n),d=new o(e);d.RangeStartDecode(e);for(var p=new Buffer.allocUnsafe(r),g={qctx:0,prevq:0,delta:0,p:0,s:0,x:0,len:0,is_dup:0,rec:0},m=0;m<r;){if(0==g.p){if(h(e,d,n,c,g,u),g.is_dup>0&&c.dup.ModelDecode(e,d)){for(var y=0;y<len;y++)p[m+y]=p[m+y-g.len];m+=g.len,g.p=0;continue}t.push(g.len);var b=(l=n.params[g.x]).context;}var v=c.qual[b].ModelDecode(e,d);p[m++]=l.qmap[v],b=a(l,g,v);}return n.do_rev&&function(e,t,r,n){for(var i=0,o=0;o<t;){if(r[i])for(var s=0,a=n[i]-1;s<a;){var f=e[o+s];e[o+s]=e[o+a],e[o+a]=f,s++,a--;}o+=n[i++];}}(p,r,u,t),p}}(new n(e),t)},encode:function(e,t,r){for(var s=new Array(2),a=new Array(2),f=new Array(2),h=new Array(2),u=new Array(256),c=0;c<2;c++)s[c]=new Array(256),a[c]=new Array(256),f[c]=new Array(1024),h[c]=new Array(256);(p=new n("",0,1.1*e.length+100)).WriteUint7(e.length);var d=function(e,t,r,n){for(var i=r[0],o=0;o<r.length&&r[o]==i;o++);var s=o==r.length?1:0,a=0,f=0;for(o=0;o<256;o++)n[0][o]=0;var h=0,l=0;for(o=0;o<e.length;o++)0==l&&(l=t[h<t.length-1?h++:h]),n[0][e[o]]++,l--;for(o=0;o<256;o++)n[0][o]&&(f<o&&(f=o),a++);var u=5,c=0;return a<=16&&(c=1,u=a<=2?1:a<=4?2:a<=8?3:4),[{qbits:8+(u>4),qshift:u,qloc:7,pbits:7,pshift:t[0]>128?1:0,ploc:0,dbits:u>4?0:1,dshift:3,dloc:15,sbits:0,sloc:15,do_stab:0,context:0,max_sym:f,nsym:a,do_qmap:c,do_dedup:0,fixed_len:1==t.length?1:0,do_sel:0,do_rev:0,do_pos:1,do_delta:u<=4?1:0,do_qtab:0,qbits:8+(u>4)-(0==s),sbits:1,sloc:15-(u<=4),do_stab:1,do_sel:1}]}(e,t,r,s),p=function(e,t,r,n,i,o,s){for(var a=[0,1,1,1,2,2,2,2,2,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7],f=0;f<t.length;f++)s[f]=f;for(;f<256;f++)s[f]=t.length-1;e.WriteByte(5);var h=(t.length>1?1:0)|(t[0].do_stab?2:0);if(e.WriteByte(h),1&h&&e.WriteByte(t.length),2&h){var u=1<<t[0].sbits;u>0&&u--,e.WriteByte(u),l(e,s,256);}for(var c=0;c<t.length;c++){if(e.WriteUint16(t[c].context),e.WriteByte((t[c].do_qtab?128:0)|(t[c].do_delta?64:0)|(t[c].do_pos?32:0)|(t[c].do_qmap?16:0)|(t[c].do_sel?8:0)|(t[c].fixed_len?4:0)|(t[c].do_dedup?2:0)),t[c].do_qmap?e.WriteByte(t[c].nsym):e.WriteByte(t[c].max_sym),e.WriteByte(t[c].qbits<<4|t[c].qshift),e.WriteByte(t[c].qloc<<4|t[c].sloc),e.WriteByte(t[c].ploc<<4|t[c].dloc),t[c].do_qmap){t[c].max_sym=t[c].nsym;var d=0;for(f=0;f<256;f++)r[c][f]&&(e.WriteByte(f),r[c][f]=d++);for(;d<t[c].nsym;d++)e.WriteByte(0);}else for(f=0;f<256;f++)r[c][f]=f;if(t[c].qbits>0){for(f=0;f<256;f++)n[c][f]=f;t[c].do_qtab&&l(e,n[c],256);}if(t[c].pbits>0){for(f=0;f<1024;f++)i[c][f]=Math.min((1<<t[c].pbits)-1,f>>t[c].pshift);l(e,i[c],1024);}if(t[c].dbits>0){for(f=0;f<256;f++)a[f]>(1<<t[c].dbits)-1&&(a[f]=(1<<t[c].dbits)-1);for(f=0;f<256;f++)o[c][f]=a[Math.min(a.length-1,f>>t[c].dshift)];l(e,o[c],256);}}return e}(p,d,s,a,f,h,u);return function(e,t,r,n,s,a,f,h,l,u){var c=1<<s[0].sbits;c>0&&c--;for(var d=t.length,p=0,g=0;g<s.length;g++)p<s[g].max_sym&&(p=s[g].max_sym);for(var m=new Array(65536),y=0;y<65536;y++)m[y]=new i(p+1);var b=new Array(4);for(y=0;y<4;y++)b[y]=new i(256);new i(2),new i(2);for(var v=new i(c+1),w=new o(t),_=(g=0,y=0,0);y<d;){if(0==g){var B=n[_];s[0].sbits>0&&v.ModelEncode(e,w,B);var E=u[B],S=r[Math.min(r.length-1,_++)];s[E].fixed_len?s[E].fixed_len>0&&(b[0].ModelEncode(e,w,255&S),b[1].ModelEncode(e,w,S>>8&255),b[2].ModelEncode(e,w,S>>16&255),b[3].ModelEncode(e,w,S>>24&255),s[E].fixed_len=-1):(b[0].ModelEncode(e,w,255&S),b[1].ModelEncode(e,w,S>>8&255),b[2].ModelEncode(e,w,S>>16&255),b[3].ModelEncode(e,w,S>>24&255)),s[E].do_dedup&&process.exit(1),g=S;var A=0,C=s[E].context,R=0,k=0;}var x=t[y++],I=a[E][x];m[C].ModelEncode(e,w,I),R=(R<<s[E].qshift)+f[E][I],C=s[E].context,C+=(R&(1<<s[E].qbits)-1)<<s[E].qloc,s[E].pbits>0&&(C+=h[E][Math.min(g,1023)]<<s[E].ploc),s[E].dbits>0&&(C+=l[E][Math.min(A,255)]<<s[E].dloc,A+=k!=I?1:0,k=I),s[E].do_sel&&(C+=B<<s[E].sloc),C&=65535,g--;}return w.RangeFinishEncode(e),e.buf.slice(0,e.pos)}(p,e,t,r,d,s,a,f,h,u)}};},3498:(e,t,r)=>{var n=r(4459),i=r(594),o=r(445),s=r(5260),a=r(2881);e.exports={r4x8_uncompress:function(e,t){n.decode(e).copy(t,0,0);},r4x16_uncompress:function(e,t){i.decode(e).copy(t,0,0);},arith_uncompress:function(e,t){o.decode(e).copy(t,0,0);},fqzcomp_uncompress:function(e,t){var r=new Array;s.decode(e,r).copy(t,0,0);},tok3_uncompress:function(e,t){var r=a.decode(e,0,"\0");Buffer.from(r,"binary").copy(t,0,0);}};},9260:e=>{e.exports=class{constructor(e,t=0,r=0){0!=r?(this.buf=Buffer.allocUnsafe(r),this.length=r):(this.buf=e,this.length=e.length),this.pos=t;}EOF(){return this.pos>=this.length}ReadData(e){var t=this.buf.slice(this.pos,this.pos+e);return this.pos+=e,t}ReadByte(){const e=this.buf[this.pos];return this.pos++,e}ReadChar(){const e=this.buf[this.pos];return this.pos++,String.fromCharCode(e)}ReadUint16(){return this.ReadByte()|this.ReadByte()<<8}ReadUint32(){const e=this.buf.readInt32LE(this.pos);return this.pos+=4,e}ReadString(){var e="";do{var t=this.buf[this.pos++];t&&(e+=String.fromCharCode(t));}while(t);return e}ReadUint7(){var e=0;do{var t=this.ReadByte();e=e<<7|127&t;}while(128&t);return e}ReadITF8(){var e=this.buf[this.pos];return this.pos++,e>=240?(e=(15&e)<<28,e+=(this.buf[this.pos+0]<<20)+(this.buf[this.pos+1]<<12)+(this.buf[this.pos+2]<<4)+(this.buf[this.pos+3]>>4),this.pos+=4):e>=224?(e=(15&e)<<24,e+=(this.buf[this.pos+0]<<16)+(this.buf[this.pos+1]<<8)+(this.buf[this.pos+2]<<0),this.pos+=3):e>=192?(e=(31&e)<<16,e+=(this.buf[this.pos+0]<<8)+(this.buf[this.pos+1]<<0),this.pos+=2):e>=128&&(e=(63&e)<<8,e+=this.buf[this.pos],this.pos++),e}WriteByte(e){this.buf[this.pos++]=e;}WriteChar(e){this.buf[this.pos++]=e.charCodeAt(0);}WriteString(e){for(var t=0;t<e.length;t++)this.buf[this.pos++]=e.charCodeAt(t);this.buf[this.pos++]=0;}WriteData(e,t){for(var r=0;r<t;r++)this.buf[this.pos++]=e[r];}WriteStream(e){this.WriteData(e.buf,e.pos);}WriteUint16(e){this.WriteByte(255&e),this.WriteByte(e>>8&255);}WriteUint32(e){this.buf.writeInt32LE(e,this.pos),this.pos+=4;}WriteUint7(e){var t=0,r=e;do{t+=7,r>>=7;}while(r>0);do{t-=7,this.WriteByte((e>>t&127)+((t>0)<<7));}while(t>0)}WriteITF8(e){e<0&&(e=1+e),e<=127?this.buf[this.pos++]=e:e<=16383?(this.buf[this.pos++]=128|Math.floor(e/256),this.buf[this.pos++]=255&e):e<131071?(this.buf[this.pos++]=192|Math.floor(e/65536),this.buf[this.pos++]=255&Math.floor(e/256),this.buf[this.pos++]=255&e):e<268435455?(this.buf[this.pos++]=224|Math.floor(e/16777216),this.buf[this.pos++]=255&Math.floor(e/65536),this.buf[this.pos++]=255&Math.floor(e/256),this.buf[this.pos++]=255&e):(this.buf[this.pos++]=240|Math.floor(e/268435456),this.buf[this.pos++]=255&Math.floor(e/1048576),this.buf[this.pos++]=255&Math.floor(e/4096),this.buf[this.pos++]=255&Math.floor(e/4),this.buf[this.pos++]=15&e);}WriteByteNeg(e){this.buf[--this.pos]=e;}};},4459:(e,t,r)=>{const n=r(9260);function i(e){return 4095&e}function o(e,t){for(var r=0;t>=e[r+1];)r++;return r}function s(e){for(var t=new Array(4096),r=0,n=0;n<4096;n++){for(;n>=e[r+1];)r++;t[n]=r;}return 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y=i(c[p]),b=h[d[p]][y];g[l+p*m]=b,c[p]=a(c[p],n[d[p]][b],r[d[p]][b]),c[p]=f(e,c[p]),d[p]=b;}for(l*=4;l<t;)y=i(c[3]),b=o(n[d[3]],y),g[l++]=b,c[3]=a(c[3],n[d[3]][b],r[d[3]][b]),c[3]=f(e,c[3]),d[3]=b;return g}(t,h)},encode:function(e,t){return 0==t?function(e){const t=e.length;var r=new n("",0,780);r.WriteByte(0),r.WriteUint32(0),r.WriteUint32(0);var i=new Array(256);((function(e,t){for(var r=0;r<256;r++)t[r]=0;for(r=0;r<e.length;r++)t[e[r]]++;}))(e,i),c(i),d(r,i);var o=new Array(256);o[0]=0;for(var s=1;s<256;s++)o[s]=o[s-1]+i[s-1];var a=new Array(4);for(s=0;s<4;s++)a[s]=1<<23;var f=Math.floor(1.05*t+100),u=new n("",f,f);for(s=t-1;s>=0;s--)a[s%4]=l(a[s%4],u,o[e[s]],i[e[s]],12);for(s=3;s>=0;s--)h(a[s],u);var p=r.pos;return r.buf.writeInt32LE(p-9+(u.length-u.pos),1),r.buf.writeInt32LE(t,5),Buffer.concat([r.buf.slice(0,r.pos),u.buf.slice(u.pos,u.length)],r.pos+u.length-u.pos)}(e):function(e){const t=e.length;var r=new n("",0,198156);r.WriteByte(1),r.WriteUint32(0),r.WriteUint32(0);for(var i=new Array(256),o=new Array(256),s=new Array(256),a=0;a<256;a++)o[a]=new Array(256),s[a]=new Array(256);for(function(e,t,r){for(var n=0;n<256;n++){r[n]=0;for(var i=0;i<256;i++)t[n][i]=0;}var o=0;for(n=0;n<e.length;n++)r[e[n]]++,t[o][e[n]]++,o=e[n];t[0][e[1*(e.length>>2)]]++,t[0][e[2*(e.length>>2)]]++,t[0][e[3*(e.length>>2)]]++,r[0]+=3;}(e,o,i),function(e,t){for(var r=0;r<256;r++)t[r]&&c(e[r]);}(o,i),function(e,t,r){for(var n=0,i=0;i<256;i++)if(r[i]){if(n>0)n--;else if(e.WriteByte(i),i>0&&r[i-1]>0){for(n=i+1;n<256&&r[n];n++);n-=i+1,e.WriteByte(n);}d(e,t[i]);}e.WriteByte(0);}(r,o,i),a=0;a<256;a++)if(i[a]){s[a][0]=0;for(var f=1;f<256;f++)s[a][f]=s[a][f-1]+o[a][f-1];}var u=new Array(4),p=new Array(4);for(f=0;f<4;f++)u[f]=1<<23,p[f]=0;var g=new n("",t,t),m=Math.floor(t/4),y=new Array(4),b=new Array(4);for(f=0;f<4;f++)y[f]=(f+1)*m-2,b[f]=e[y[f]+1];for(b[3]=e[t-1],a=t-2;a>4*m-2;a--)u[3]=l(u[3],g,s[e[a]][b[3]],o[e[a]][b[3]],12),b[3]=e[a];for(;y[0]>=0;)for(f=3;f>=0;f--){var v=e[y[f]];u[f]=l(u[f],g,s[v][b[f]],o[v][b[f]],12),b[f]=v,y[f]--;}for(f=3;f>=0;f--)u[f]=l(u[f],g,s[0][b[f]],o[0][b[f]],12);for(a=3;a>=0;a--)h(u[a],g);var w=r.pos;return r.buf.writeInt32LE(w-9+(g.length-g.pos),1),r.buf.writeInt32LE(t,5),Buffer.concat([r.buf.slice(0,r.pos),g.buf.slice(g.pos,g.length)],r.pos+g.length-g.pos)}(e)}};},594:(e,t,r)=>{const n=r(9260);function i(e,t){return e&(1<<t)-1}function o(e,t){for(var r=0;t>=e[r+1];)r++;return r}function s(e,t){for(var r=1<<t,n=new Array(r),i=0,o=0;o<r;o++){for(;o>=e[i+1];)i++;n[o]=i;}return n}function a(e,t,r,n){return r*(e>>n)+(e&(1<<n)-1)-t}function f(e,t){return t<32768&&(t=(t<<16)+e.ReadUint16()),t}function h(e,t){t.WriteByteNeg(e>>24&255),t.WriteByteNeg(e>>16&255),t.WriteByteNeg(e>>8&255),t.WriteByteNeg(e>>0&255);}function l(e,t,r,n,i){return e=function(e,t,r,n){for(var i=(1<<31-n)*r;e>=i;)t.WriteByteNeg(e>>8&255),t.WriteByteNeg(255&e),e>>=16;return e}(e,t,n,i),(Math.floor(e/n)<<i)+e%n+r}function u(e,t,r){0==r&&(r=4);for(var i=new 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r,n,i,o,s,a,f,h,l,u,c,d,p,g,m,y,b,v,w,_,B,E,S,A,C;r=e.state,n=e.next_in,A=e.input,i=n+(e.avail_in-5),o=e.next_out,C=e.output,s=o-(t-e.avail_out),a=o+(e.avail_out-257),f=r.dmax,h=r.wsize,l=r.whave,u=r.wnext,c=r.window,d=r.hold,p=r.bits,g=r.lencode,m=r.distcode,y=(1<<r.lenbits)-1,b=(1<<r.distbits)-1;e:do{p<15&&(d+=A[n++]<<p,p+=8,d+=A[n++]<<p,p+=8),v=g[d&y];t:for(;;){if(d>>>=w=v>>>24,p-=w,0==(w=v>>>16&255))C[o++]=65535&v;else {if(!(16&w)){if(0==(64&w)){v=g[(65535&v)+(d&(1<<w)-1)];continue t}if(32&w){r.mode=12;break e}e.msg="invalid literal/length code",r.mode=30;break e}_=65535&v,(w&=15)&&(p<w&&(d+=A[n++]<<p,p+=8),_+=d&(1<<w)-1,d>>>=w,p-=w),p<15&&(d+=A[n++]<<p,p+=8,d+=A[n++]<<p,p+=8),v=m[d&b];r:for(;;){if(d>>>=w=v>>>24,p-=w,!(16&(w=v>>>16&255))){if(0==(64&w)){v=m[(65535&v)+(d&(1<<w)-1)];continue r}e.msg="invalid distance code",r.mode=30;break e}if(B=65535&v,p<(w&=15)&&(d+=A[n++]<<p,(p+=8)<w&&(d+=A[n++]<<p,p+=8)),(B+=d&(1<<w)-1)>f){e.msg="invalid distance too far back",r.mode=30;break 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e;S=0;do{O=c[p+S++],r.head&&O&&r.length<65536&&(r.head.name+=String.fromCharCode(O));}while(O&&S<m);if(512&r.flags&&(r.check=o(r.check,c,S,p)),m-=S,p+=S,O)break e}else r.head&&(r.head.name=null);r.length=0,r.mode=8;case 8:if(4096&r.flags){if(0===m)break e;S=0;do{O=c[p+S++],r.head&&O&&r.length<65536&&(r.head.comment+=String.fromCharCode(O));}while(O&&S<m);if(512&r.flags&&(r.check=o(r.check,c,S,p)),m-=S,p+=S,O)break e}else r.head&&(r.head.comment=null);r.mode=9;case 9:if(512&r.flags){for(;v<16;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}if(b!==(65535&r.check)){e.msg="header crc mismatch",r.mode=l;break}b=0,v=0;}r.head&&(r.head.hcrc=r.flags>>9&1,r.head.done=!0),e.adler=r.check=0,r.mode=h;break;case 10:for(;v<32;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}e.adler=r.check=u(b),b=0,v=0,r.mode=11;case 11:if(0===r.havedict)return e.next_out=g,e.avail_out=y,e.next_in=p,e.avail_in=m,r.hold=b,r.bits=v,2;e.adler=r.check=1,r.mode=h;case h:if(5===t||6===t)break e;case 13:if(r.last){b>>>=7&v,v-=7&v,r.mode=27;break}for(;v<3;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}switch(r.last=1&b,v-=1,3&(b>>>=1)){case 0:r.mode=14;break;case 1:if(w(r),r.mode=20,6===t){b>>>=2,v-=2;break e}break;case 2:r.mode=17;break;case 3:e.msg="invalid block type",r.mode=l;}b>>>=2,v-=2;break;case 14:for(b>>>=7&v,v-=7&v;v<32;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}if((65535&b)!=(b>>>16^65535)){e.msg="invalid stored block lengths",r.mode=l;break}if(r.length=65535&b,b=0,v=0,r.mode=15,6===t)break e;case 15:r.mode=16;case 16:if(S=r.length){if(S>m&&(S=m),S>y&&(S=y),0===S)break e;n.arraySet(d,c,p,S,g),m-=S,p+=S,y-=S,g+=S,r.length-=S;break}r.mode=h;break;case 17:for(;v<14;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}if(r.nlen=257+(31&b),b>>>=5,v-=5,r.ndist=1+(31&b),b>>>=5,v-=5,r.ncode=4+(15&b),b>>>=4,v-=4,r.nlen>286||r.ndist>30){e.msg="too many length or distance symbols",r.mode=l;break}r.have=0,r.mode=18;case 18:for(;r.have<r.ncode;){for(;v<3;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}r.lens[z[r.have++]]=7&b,b>>>=3,v-=3;}for(;r.have<19;)r.lens[z[r.have++]]=0;if(r.lencode=r.lendyn,r.lenbits=7,U={bits:r.lenbits},T=a(0,r.lens,0,19,r.lencode,0,r.work,U),r.lenbits=U.bits,T){e.msg="invalid code lengths set",r.mode=l;break}r.have=0,r.mode=19;case 19:for(;r.have<r.nlen+r.ndist;){for(;k=(N=r.lencode[b&(1<<r.lenbits)-1])>>>16&255,x=65535&N,!((R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}if(x<16)b>>>=R,v-=R,r.lens[r.have++]=x;else {if(16===x){for(P=R+2;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}if(b>>>=R,v-=R,0===r.have){e.msg="invalid bit length repeat",r.mode=l;break}O=r.lens[r.have-1],S=3+(3&b),b>>>=2,v-=2;}else if(17===x){for(P=R+3;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}v-=R,O=0,S=3+(7&(b>>>=R)),b>>>=3,v-=3;}else {for(P=R+7;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}v-=R,O=0,S=11+(127&(b>>>=R)),b>>>=7,v-=7;}if(r.have+S>r.nlen+r.ndist){e.msg="invalid bit length repeat",r.mode=l;break}for(;S--;)r.lens[r.have++]=O;}}if(r.mode===l)break;if(0===r.lens[256]){e.msg="invalid code -- missing end-of-block",r.mode=l;break}if(r.lenbits=9,U={bits:r.lenbits},T=a(1,r.lens,0,r.nlen,r.lencode,0,r.work,U),r.lenbits=U.bits,T){e.msg="invalid literal/lengths set",r.mode=l;break}if(r.distbits=6,r.distcode=r.distdyn,U={bits:r.distbits},T=a(2,r.lens,r.nlen,r.ndist,r.distcode,0,r.work,U),r.distbits=U.bits,T){e.msg="invalid distances set",r.mode=l;break}if(r.mode=20,6===t)break e;case 20:r.mode=21;case 21:if(m>=6&&y>=258){e.next_out=g,e.avail_out=y,e.next_in=p,e.avail_in=m,r.hold=b,r.bits=v,s(e,E),g=e.next_out,d=e.output,y=e.avail_out,p=e.next_in,c=e.input,m=e.avail_in,b=r.hold,v=r.bits,r.mode===h&&(r.back=-1);break}for(r.back=0;k=(N=r.lencode[b&(1<<r.lenbits)-1])>>>16&255,x=65535&N,!((R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}if(k&&0==(240&k)){for(I=R,M=k,F=x;k=(N=r.lencode[F+((b&(1<<I+M)-1)>>I)])>>>16&255,x=65535&N,!(I+(R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}b>>>=I,v-=I,r.back+=I;}if(b>>>=R,v-=R,r.back+=R,r.length=x,0===k){r.mode=26;break}if(32&k){r.back=-1,r.mode=h;break}if(64&k){e.msg="invalid literal/length code",r.mode=l;break}r.extra=15&k,r.mode=22;case 22:if(r.extra){for(P=r.extra;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}r.length+=b&(1<<r.extra)-1,b>>>=r.extra,v-=r.extra,r.back+=r.extra;}r.was=r.length,r.mode=23;case 23:for(;k=(N=r.distcode[b&(1<<r.distbits)-1])>>>16&255,x=65535&N,!((R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}if(0==(240&k)){for(I=R,M=k,F=x;k=(N=r.distcode[F+((b&(1<<I+M)-1)>>I)])>>>16&255,x=65535&N,!(I+(R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}b>>>=I,v-=I,r.back+=I;}if(b>>>=R,v-=R,r.back+=R,64&k){e.msg="invalid distance code",r.mode=l;break}r.offset=x,r.extra=15&k,r.mode=24;case 24:if(r.extra){for(P=r.extra;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}r.offset+=b&(1<<r.extra)-1,b>>>=r.extra,v-=r.extra,r.back+=r.extra;}if(r.offset>r.dmax){e.msg="invalid distance too far back",r.mode=l;break}r.mode=25;case 25:if(0===y)break e;if(S=E-y,r.offset>S){if((S=r.offset-S)>r.whave&&r.sane){e.msg="invalid distance too far back",r.mode=l;break}S>r.wnext?(S-=r.wnext,A=r.wsize-S):A=r.wnext-S,S>r.length&&(S=r.length),C=r.window;}else C=d,A=g-r.offset,S=r.length;S>y&&(S=y),y-=S,r.length-=S;do{d[g++]=C[A++];}while(--S);0===r.length&&(r.mode=21);break;case 26:if(0===y)break e;d[g++]=r.length,y--,r.mode=21;break;case 27:if(r.wrap){for(;v<32;){if(0===m)break e;m--,b|=c[p++]<<v,v+=8;}if(E-=y,e.total_out+=E,r.total+=E,E&&(e.adler=r.check=r.flags?o(r.check,d,E,g-E):i(r.check,d,E,g-E)),E=y,(r.flags?b:u(b))!==r.check){e.msg="incorrect data check",r.mode=l;break}b=0,v=0;}r.mode=28;case 28:if(r.wrap&&r.flags){for(;v<32;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}if(b!==(4294967295&r.total)){e.msg="incorrect length check",r.mode=l;break}b=0,v=0;}r.mode=29;case 29:T=1;break e;case l:T=-3;break e;case 31:return -4;default:return f}return e.next_out=g,e.avail_out=y,e.next_in=p,e.avail_in=m,r.hold=b,r.bits=v,(r.wsize||E!==e.avail_out&&r.mode<l&&(r.mode<27||4!==t))&&_(e,e.output,e.next_out,E-e.avail_out)?(r.mode=31,-4):(B-=e.avail_in,E-=e.avail_out,e.total_in+=B,e.total_out+=E,r.total+=E,r.wrap&&E&&(e.adler=r.check=r.flags?o(r.check,d,E,e.next_out-E):i(r.check,d,E,e.next_out-E)),e.data_type=r.bits+(r.last?64:0)+(r.mode===h?128:0)+(20===r.mode||15===r.mode?256:0),(0===B&&0===E||4===t)&&0===T&&(T=-5),T)},t.inflateEnd=function(e){if(!e||!e.state)return f;var t=e.state;return t.window&&(t.window=null),e.state=null,0},t.inflateGetHeader=function(e,t){var r;return e&&e.state?0==(2&(r=e.state).wrap)?f:(r.head=t,t.done=!1,0):f},t.inflateSetDictionary=function(e,t){var r,n=t.length;return e&&e.state?0!==(r=e.state).wrap&&11!==r.mode?f:11===r.mode&&i(1,t,n,0)!==r.check?-3:_(e,t,n,n)?(r.mode=31,-4):(r.havedict=1,0):f},t.inflateInfo="pako inflate (from Nodeca project)";},9241:(e,t,r)=>{var n=r(4236),i=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],o=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],s=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],a=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];e.exports=function(e,t,r,f,h,l,u,c){var d,p,g,m,y,b,v,w,_,B=c.bits,E=0,S=0,A=0,C=0,R=0,k=0,x=0,I=0,M=0,F=0,O=null,T=0,U=new n.Buf16(16),P=new n.Buf16(16),N=null,L=0;for(E=0;E<=15;E++)U[E]=0;for(S=0;S<f;S++)U[t[r+S]]++;for(R=B,C=15;C>=1&&0===U[C];C--);if(R>C&&(R=C),0===C)return h[l++]=20971520,h[l++]=20971520,c.bits=1,0;for(A=1;A<C&&0===U[A];A++);for(R<A&&(R=A),I=1,E=1;E<=15;E++)if(I<<=1,(I-=U[E])<0)return -1;if(I>0&&(0===e||1!==C))return -1;for(P[1]=0,E=1;E<15;E++)P[E+1]=P[E]+U[E];for(S=0;S<f;S++)0!==t[r+S]&&(u[P[t[r+S]]++]=S);if(0===e?(O=N=u,b=19):1===e?(O=i,T-=257,N=o,L-=257,b=256):(O=s,N=a,b=-1),F=0,S=0,E=A,y=l,k=R,x=0,g=-1,m=(M=1<<R)-1,1===e&&M>852||2===e&&M>592)return 1;for(;;){v=E-x,u[S]<b?(w=0,_=u[S]):u[S]>b?(w=N[L+u[S]],_=O[T+u[S]]):(w=96,_=0),d=1<<E-x,A=p=1<<k;do{h[y+(F>>x)+(p-=d)]=v<<24|w<<16|_|0;}while(0!==p);for(d=1<<E-1;F&d;)d>>=1;if(0!==d?(F&=d-1,F+=d):F=0,S++,0==--U[E]){if(E===C)break;E=t[r+u[S]];}if(E>R&&(F&m)!==g){for(0===x&&(x=R),y+=A,I=1<<(k=E-x);k+x<C&&!((I-=U[k+x])<=0);)k++,I<<=1;if(M+=1<<k,1===e&&M>852||2===e&&M>592)return 1;h[g=F&m]=R<<24|k<<16|y-l|0;}}return 0!==F&&(h[y+F]=E-x<<24|64<<16|0),c.bits=R,0};},8898:e=>{e.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"};},342:(e,t,r)=>{var n=r(4236);function i(e){for(var t=e.length;--t>=0;)e[t]=0;}var o=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0],s=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13],a=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7],f=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],h=new Array(576);i(h);var l=new Array(60);i(l);var u=new Array(512);i(u);var c=new Array(256);i(c);var d=new Array(29);i(d);var p,g,m,y=new Array(30);function b(e,t,r,n,i){this.static_tree=e,this.extra_bits=t,this.extra_base=r,this.elems=n,this.max_length=i,this.has_stree=e&&e.length;}function v(e,t){this.dyn_tree=e,this.max_code=0,this.stat_desc=t;}function w(e){return e<256?u[e]:u[256+(e>>>7)]}function _(e,t){e.pending_buf[e.pending++]=255&t,e.pending_buf[e.pending++]=t>>>8&255;}function B(e,t,r){e.bi_valid>16-r?(e.bi_buf|=t<<e.bi_valid&65535,_(e,e.bi_buf),e.bi_buf=t>>16-e.bi_valid,e.bi_valid+=r-16):(e.bi_buf|=t<<e.bi_valid&65535,e.bi_valid+=r);}function E(e,t,r){B(e,r[2*t],r[2*t+1]);}function S(e,t){var r=0;do{r|=1&e,e>>>=1,r<<=1;}while(--t>0);return r>>>1}function A(e,t,r){var n,i,o=new Array(16),s=0;for(n=1;n<=15;n++)o[n]=s=s+r[n-1]<<1;for(i=0;i<=t;i++){var a=e[2*i+1];0!==a&&(e[2*i]=S(o[a]++,a));}}function C(e){var t;for(t=0;t<286;t++)e.dyn_ltree[2*t]=0;for(t=0;t<30;t++)e.dyn_dtree[2*t]=0;for(t=0;t<19;t++)e.bl_tree[2*t]=0;e.dyn_ltree[512]=1,e.opt_len=e.static_len=0,e.last_lit=e.matches=0;}function R(e){e.bi_valid>8?_(e,e.bi_buf):e.bi_valid>0&&(e.pending_buf[e.pending++]=e.bi_buf),e.bi_buf=0,e.bi_valid=0;}function k(e,t,r,n){var i=2*t,o=2*r;return e[i]<e[o]||e[i]===e[o]&&n[t]<=n[r]}function x(e,t,r){for(var n=e.heap[r],i=r<<1;i<=e.heap_len&&(i<e.heap_len&&k(t,e.heap[i+1],e.heap[i],e.depth)&&i++,!k(t,n,e.heap[i],e.depth));)e.heap[r]=e.heap[i],r=i,i<<=1;e.heap[r]=n;}function I(e,t,r){var n,i,a,f,h=0;if(0!==e.last_lit)do{n=e.pending_buf[e.d_buf+2*h]<<8|e.pending_buf[e.d_buf+2*h+1],i=e.pending_buf[e.l_buf+h],h++,0===n?E(e,i,t):(E(e,(a=c[i])+256+1,t),0!==(f=o[a])&&B(e,i-=d[a],f),E(e,a=w(--n),r),0!==(f=s[a])&&B(e,n-=y[a],f));}while(h<e.last_lit);E(e,256,t);}function M(e,t){var r,n,i,o=t.dyn_tree,s=t.stat_desc.static_tree,a=t.stat_desc.has_stree,f=t.stat_desc.elems,h=-1;for(e.heap_len=0,e.heap_max=573,r=0;r<f;r++)0!==o[2*r]?(e.heap[++e.heap_len]=h=r,e.depth[r]=0):o[2*r+1]=0;for(;e.heap_len<2;)o[2*(i=e.heap[++e.heap_len]=h<2?++h:0)]=1,e.depth[i]=0,e.opt_len--,a&&(e.static_len-=s[2*i+1]);for(t.max_code=h,r=e.heap_len>>1;r>=1;r--)x(e,o,r);i=f;do{r=e.heap[1],e.heap[1]=e.heap[e.heap_len--],x(e,o,1),n=e.heap[1],e.heap[--e.heap_max]=r,e.heap[--e.heap_max]=n,o[2*i]=o[2*r]+o[2*n],e.depth[i]=(e.depth[r]>=e.depth[n]?e.depth[r]:e.depth[n])+1,o[2*r+1]=o[2*n+1]=i,e.heap[1]=i++,x(e,o,1);}while(e.heap_len>=2);e.heap[--e.heap_max]=e.heap[1],function(e,t){var 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S&&(r.hostname=r.host=E.shift(),(x=!!(r.host&&r.host.indexOf("@")>0)&&r.host.split("@"))&&(r.auth=x.shift(),r.host=r.hostname=x.shift())),r.search=e.search,r.query=e.query,i.isNull(r.pathname)&&i.isNull(r.search)||(r.path=(r.pathname?r.pathname:"")+(r.search?r.search:"")),r.href=r.format(),r;if(!E.length)return r.pathname=null,r.search?r.path="/"+r.search:r.path=null,r.href=r.format(),r;for(var A=E.slice(-1)[0],C=(r.host||e.host||E.length>1)&&("."===A||".."===A)||""===A,R=0,k=E.length;k>=0;k--)"."===(A=E[k])?E.splice(k,1):".."===A?(E.splice(k,1),R++):R&&(E.splice(k,1),R--);if(!_&&!B)for(;R--;R)E.unshift("..");!_||""===E[0]||E[0]&&"/"===E[0].charAt(0)||E.unshift(""),C&&"/"!==E.join("/").substr(-1)&&E.push("");var x,I=""===E[0]||E[0]&&"/"===E[0].charAt(0);return S&&(r.hostname=r.host=I?"":E.length?E.shift():"",(x=!!(r.host&&r.host.indexOf("@")>0)&&r.host.split("@"))&&(r.auth=x.shift(),r.host=r.hostname=x.shift())),(_=_||r.host&&E.length)&&!I&&E.unshift(""),E.length?r.pathname=E.join("/"):(r.pathname=null,r.path=null),i.isNull(r.pathname)&&i.isNull(r.search)||(r.path=(r.pathname?r.pathname:"")+(r.search?r.search:"")),r.auth=e.auth||r.auth,r.slashes=r.slashes||e.slashes,r.href=r.format(),r},o.prototype.parseHost=function(){var e=this.host,t=a.exec(e);t&&(":"!==(t=t[0])&&(this.port=t.substr(1)),e=e.substr(0,e.length-t.length)),e&&(this.hostname=e);};},2502:e=>{e.exports={isString:function(e){return "string"==typeof e},isObject:function(e){return "object"==typeof e&&null!==e},isNull:function(e){return null===e},isNullOrUndefined:function(e){return null==e}};},7067:()=>{}},t={};function r(n){var i=t[n];if(void 0!==i)return i.exports;var o=t[n]={id:n,loaded:!1,exports:{}};return e[n].call(o.exports,o,o.exports,r),o.loaded=!0,o.exports}r.n=e=>{var t=e&&e.__esModule?()=>e.default:()=>e;return r.d(t,{a:t}),t},r.d=(e,t)=>{for(var n in t)r.o(t,n)&&!r.o(e,n)&&Object.defineProperty(e,n,{enumerable:!0,get:t[n]});},r.g=function(){if("object"==typeof globalThis)return globalThis;try{return this||new Function("return this")()}catch(e){if("object"==typeof window)return window}}(),r.o=(e,t)=>Object.prototype.hasOwnProperty.call(e,t),r.r=e=>{"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0});},r.nmd=e=>(e.paths=[],e.children||(e.children=[]),e);var n=r(5590);
+    //window.gmodCRAM=n
+    return n;
+};
+
+const gmodCRAM = fn();
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2018 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const READ_STRAND_FLAG = 0x10;
+const MATE_STRAND_FLAG = 0x20;
+
+const CRAM_MATE_STRAND_FLAG = 0x1;
+
+/**
+ * Class for reading a cram file.  Wraps the gMOD Cram package.
+ *
+ * @param config
+ * @constructor
+ */
+class CramReader {
+
+    constructor(config, genome, browser) {
+
+        this.config = config;
+        this.browser = browser;
+        this.genome = genome;
+
+        this.cramFile = new gmodCRAM.CramFile({
+            filehandle: new FileHandler(config.url, config),
+            seqFetch: config.seqFetch || seqFetch.bind(this),
+            checkSequenceMD5: config.checkSequenceMD5 !== undefined ? config.checkSequenceMD5 : true
+        });
+
+        const indexFileHandle = new FileHandler(config.indexURL, config);
+        this.indexedCramFile = new gmodCRAM.IndexedCramFile({
+            cram: this.cramFile,
+            index: new gmodCRAM.CraiIndex({
+                filehandle: indexFileHandle
+            }),
+            fetchSizeLimit: 30000000
+        });
+
+        BamUtils.setReaderDefaults(this, config);
+
+        function seqFetch(seqID, start, end) {
+
+            const sequence = this.genome.sequence;
+            const genome = this.genome;
+
+            return this.getHeader()
+                .then(function (header) {
+                    const chr = genome.getChromosomeName(header.chrNames[seqID]);
+                    return sequence.getSequence(chr, start - 1, end)
+                })
+        }
+    }
+
+
+    /**
+     * Parse the sequence dictionary from the SAM header and build chr name tables.  This function
+     * is public so it can be unit tested.
+     *
+     * @returns {PromiseLike<chrName, chrToIndex, chrAliasTable}>}
+     */
+
+    async getHeader() {
+
+        if (!this.header) {
+            const genome = this.genome;
+            const samHeader = await this.cramFile.getSamHeader();
+            const chrToIndex = {};
+            const chrNames = [];
+            const chrAliasTable = {};
+            const readGroups = [];
+
+            for (let line of samHeader) {
+                if ('SQ' === line.tag) {
+                    for (let d of line.data) {
+                        if (d.tag === "SN") {
+                            const seq = d.value;
+                            chrToIndex[seq] = chrNames.length;
+                            chrNames.push(seq);
+                            if (genome) {
+                                const alias = genome.getChromosomeName(seq);
+                                chrAliasTable[alias] = seq;
+                            }
+                            break
+                        }
+                    }
+                } else if ('RG' === line.tag) {
+                    readGroups.push(line.data);
+                }
+            }
+
+            this.header = {
+                chrNames: chrNames,
+                chrToIndex: chrToIndex,
+                chrAliasTable: chrAliasTable,
+                readGroups: readGroups
+            };
+        }
+
+        return this.header
+    }
+
+    async readAlignments(chr, bpStart, bpEnd) {
+
+        this.browser;
+        const header = await this.getHeader();
+        const queryChr = header.chrAliasTable.hasOwnProperty(chr) ? header.chrAliasTable[chr] : chr;
+        const chrIdx = header.chrToIndex[queryChr];
+        const alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, this.config);
+
+        if (chrIdx === undefined) {
+            return alignmentContainer
+
+        } else {
+
+            try {
+                const records = await this.indexedCramFile.getRecordsForRange(chrIdx, bpStart, bpEnd);
+
+                for (let record of records) {
+
+                    const refID = record.sequenceId;
+                    const pos = record.alignmentStart;
+                    const alignmentEnd = pos + record.lengthOnRef;
+
+                    if (refID < 0) {
+                        continue   // unmapped read
+                    } else if (refID > chrIdx || pos > bpEnd) {
+                        return    // off right edge, we're done
+                    } else if (refID < chrIdx) {
+                        continue   // Sequence to left of start, not sure this is possible
+                    }
+                    if (alignmentEnd < bpStart) {
+                        continue
+                    }  // Record out-of-range "to the left", skip to next one
+
+                    const alignment = decodeCramRecord(record, header.chrNames);
+
+                    if (this.filter.pass(alignment)) {
+                        alignmentContainer.push(alignment);
+                    }
+                }
+
+                alignmentContainer.finish();
+                return alignmentContainer
+            } catch (error) {
+                let message = error.message;
+                if (message && message.indexOf("MD5") >= 0) {
+                    message = "Sequence mismatch. Is this the correct genome for the loaded CRAM?";
+                }
+                this.browser.alert.present(new Error(message));
+                throw error
+            }
+        }
+
+        function decodeCramRecord(record, chrNames) {
+
+            const alignment = new BamAlignment();
+
+            alignment.chr = chrNames[record.sequenceId];
+            alignment.start = record.alignmentStart - 1;
+            alignment.lengthOnRef = record.lengthOnRef;
+            alignment.flags = record.flags;
+            alignment.strand = !(record.flags & READ_STRAND_FLAG);
+            alignment.fragmentLength = record.templateLength || record.templateSize;
+            alignment.mq = record.mappingQuality;
+            alignment.end = record.alignmentStart + record.lengthOnRef;
+            alignment.readGroupId = record.readGroupId;
+
+            if (record.mate && record.mate.sequenceId !== undefined) {
+                const strand = record.mate.flags !== undefined ?
+                    !(record.mate.flags & CRAM_MATE_STRAND_FLAG) :
+                    !(record.flags & MATE_STRAND_FLAG);
+
+                alignment.mate = {
+                    chr: chrNames[record.mate.sequenceId],
+                    position: record.mate.alignmentStart,
+                    strand: strand
+                };
+            }
+
+            alignment.seq = record.getReadBases();
+            alignment.qual = record.qualityScores;
+            alignment.tagDict = record.tags;
+            alignment.readName = record.readName;
+
+            // TODO -- cigar encoded in tag?
+            // BamUtils.bam_tag2cigar(ba, blockEnd, p, lseq, alignment, cigarArray);
+
+            makeBlocks(record, alignment);
+
+            if (alignment.mate && alignment.start > alignment.mate.position && alignment.fragmentLength > 0) {
+                alignment.fragmentLength = -alignment.fragmentLength;
+            }
+
+            BamUtils.setPairOrientation(alignment);
+
+            return alignment
+
+        }
+
+        function makeBlocks(cramRecord, alignment) {
+
+            const blocks = [];
+            let insertions;
+            let gaps;
+            let basesUsed = 0;
+            let cigarString = '';
+
+            alignment.scStart = alignment.start;
+            alignment.scLengthOnRef = alignment.lengthOnRef;
+
+            if (cramRecord.readFeatures) {
+
+                for (let feature of cramRecord.readFeatures) {
+
+                    const code = feature.code;
+                    const data = feature.data;
+                    const readPos = feature.pos - 1;
+                    const refPos = feature.refPos - 1;
+
+                    switch (code) {
+                        case 'S' :
+                        case 'I':
+                        case 'i':
+                        case 'N':
+                        case 'D':
+                            if (readPos > basesUsed) {
+                                const len = readPos - basesUsed;
+                                blocks.push(new AlignmentBlock({
+                                    start: refPos - len,
+                                    seqOffset: basesUsed,
+                                    len: len,
+                                    type: 'M'
+                                }));
+                                basesUsed += len;
+                                cigarString += len + 'M';
+                            }
+
+                            if ('S' === code) {
+                                let scPos = refPos;
+                                alignment.scLengthOnRef += data.length;
+                                if (readPos === 0) {
+                                    alignment.scStart -= data.length;
+                                    scPos -= data.length;
+                                }
+                                const len = data.length;
+                                blocks.push(new AlignmentBlock({
+                                    start: scPos,
+                                    seqOffset: basesUsed,
+                                    len: len,
+                                    type: 'S'
+                                }));
+                                basesUsed += len;
+                                cigarString += len + code;
+                            } else if ('I' === code || 'i' === code) {
+                                if (insertions === undefined) {
+                                    insertions = [];
+                                }
+                                const len = 'i' === code ? 1 : data.length;
+                                insertions.push(new AlignmentBlock({
+                                    start: refPos,
+                                    len: len,
+                                    seqOffset: basesUsed,
+                                    type: 'I'
+                                }));
+                                basesUsed += len;
+                                cigarString += len + code;
+                            } else if ('D' === code || 'N' === code) {
+                                if (!gaps) {
+                                    gaps = [];
+                                }
+                                gaps.push({
+                                    start: refPos,
+                                    len: data,
+                                    type: code
+                                });
+                                cigarString += data + code;
+                            }
+                            break
+
+                        case 'H':
+                        case 'P':
+                            cigarString += data + code;
+                            break
+                        //  Ignore
+                    }
+                }
+            }
+
+            // Last block
+            const len = cramRecord.readLength - basesUsed;
+            if (len > 0) {
+                blocks.push(new AlignmentBlock({
+                    start: cramRecord.alignmentStart + cramRecord.lengthOnRef - len - 1,
+                    seqOffset: basesUsed,
+                    len: len,
+                    type: 'M'
+                }));
+
+                cigarString += len + 'M';
+            }
+
+            alignment.blocks = blocks;
+            alignment.insertions = insertions;
+            alignment.gaps = gaps;
+            alignment.cigar = cigarString;
+
+        }
+
+    }
+}
+
+class FileHandler {
+
+    constructor(source, config) {
+        this.position = 0;
+        this.url = source;
+        this.config = config;
+        this.cache = new BufferCache({
+            fetch: (start, length) => this._fetch(start, length),
+        });
+    }
+
+    async _fetch(position, length) {
+
+        const loadRange = {start: position, size: length};
+        this._stat = {size: undefined};
+        const arrayBuffer = await igvxhr.loadArrayBuffer(this.url, buildOptions(this.config, {range: loadRange}));
+        return Buffer.from(arrayBuffer)
+    }
+
+    async read(buffer, offset = 0, length = Infinity, position = 0) {
+        let readPosition = position;
+        if (readPosition === null) {
+            readPosition = this.position;
+            this.position += length;
+        }
+        return this.cache.get(buffer, offset, length, position)
+    }
+
+    async readFile() {
+        const arrayBuffer = await igvxhr.loadArrayBuffer(this.url, buildOptions(this.config));
+        return Buffer.from(arrayBuffer)
+    }
+
+    async stat() {
+        if (!this._stat) {
+            const buf = Buffer.allocUnsafe(10);
+            await this.read(buf, 0, 10, 0);
+            if (!this._stat)
+                throw new Error(`unable to determine size of file at ${this.url}`)
+        }
+        return this._stat
+    }
+}
+
+class BufferCache {
+
+    constructor({fetch, size = 10000000, chunkSize = 32768}) {
+
+        this.fetch = fetch;
+        this.chunkSize = chunkSize;
+        this.lruCache = new QuickLRU({maxSize: Math.floor(size / chunkSize)});
+    }
+
+    async get(outputBuffer, offset, length, position) {
+        if (outputBuffer.length < offset + length)
+            throw new Error('output buffer not big enough for request')
+
+        // calculate the list of chunks involved in this fetch
+        const firstChunk = Math.floor(position / this.chunkSize);
+        const lastChunk = Math.floor((position + length) / this.chunkSize);
+
+        // fetch them all as necessary
+        const fetches = new Array(lastChunk - firstChunk + 1);
+        for (let chunk = firstChunk; chunk <= lastChunk; chunk += 1) {
+            fetches[chunk - firstChunk] = this._getChunk(chunk).then(data => ({
+                data,
+                chunkNumber: chunk,
+            }));
+        }
+
+        // stitch together the response buffer using them
+        const chunks = await Promise.all(fetches);
+        const chunksOffset = position - chunks[0].chunkNumber * this.chunkSize;
+        chunks.forEach(({data, chunkNumber}) => {
+            const chunkPositionStart = chunkNumber * this.chunkSize;
+            let copyStart = 0;
+            let copyEnd = this.chunkSize;
+            let copyOffset =
+                offset + (chunkNumber - firstChunk) * this.chunkSize - chunksOffset;
+
+            if (chunkNumber === firstChunk) {
+                copyOffset = offset;
+                copyStart = chunksOffset;
+            }
+            if (chunkNumber === lastChunk) {
+                copyEnd = position + length - chunkPositionStart;
+            }
+
+            data.copy(outputBuffer, copyOffset, copyStart, copyEnd);
+        });
+    }
+
+    _getChunk(chunkNumber) {
+        const cachedPromise = this.lruCache.get(chunkNumber);
+        if (cachedPromise) return cachedPromise
+
+        const freshPromise = this.fetch(
+            chunkNumber * this.chunkSize,
+            this.chunkSize,
+        );
+        this.lruCache.set(chunkNumber, freshPromise);
+        return freshPromise
+    }
+}
+
+class QuickLRU {
+    constructor(options = {}) {
+        if (!(options.maxSize && options.maxSize > 0)) {
+            throw new TypeError('`maxSize` must be a number greater than 0')
+        }
+
+        this.maxSize = options.maxSize;
+        this.cache = new Map();
+        this.oldCache = new Map();
+        this._size = 0;
+    }
+
+    _set(key, value) {
+        this.cache.set(key, value);
+        this._size++;
+
+        if (this._size >= this.maxSize) {
+            this._size = 0;
+            this.oldCache = this.cache;
+            this.cache = new Map();
+        }
+    }
+
+    get(key) {
+        if (this.cache.has(key)) {
+            return this.cache.get(key)
+        }
+
+        if (this.oldCache.has(key)) {
+            const value = this.oldCache.get(key);
+            this._set(key, value);
+            return value
+        }
+    }
+
+    set(key, value) {
+        if (this.cache.has(key)) {
+            this.cache.set(key, value);
+        } else {
+            this._set(key, value);
+        }
+
+        return this
+    }
+
+    has(key) {
+        return this.cache.has(key) || this.oldCache.has(key)
+    }
+
+    peek(key) {
+        if (this.cache.has(key)) {
+            return this.cache.get(key)
+        }
+
+        if (this.oldCache.has(key)) {
+            return this.oldCache.get(key)
+        }
+    }
+
+    delete(key) {
+        const deleted = this.cache.delete(key);
+        if (deleted) {
+            this._size--;
+        }
+
+        return this.oldCache.delete(key) || deleted
+    }
+
+    clear() {
+        this.cache.clear();
+        this.oldCache.clear();
+        this._size = 0;
+    }
+
+    * keys() {
+        for (const [key] of this) {
+            yield key;
+        }
+    }
+
+    * values() {
+        for (const [, value] of this) {
+            yield value;
+        }
+    }
+
+    * [Symbol.iterator]() {
+        for (const item of this.cache) {
+            yield item;
+        }
+
+        for (const item of this.oldCache) {
+            const [key] = item;
+            if (!this.cache.has(key)) {
+                yield item;
+            }
+        }
+    }
+
+    get size() {
+        let oldCacheSize = 0;
+        for (const key of this.oldCache.keys()) {
+            if (!this.cache.has(key)) {
+                oldCacheSize++;
+            }
+        }
+
+        return this._size + oldCacheSize
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+var CigarOperationTable = {
+    "ALIGNMENT_MATCH": "M",
+    "INSERT": "I",
+    "DELETE": "D",
+    "SKIP": "N",
+    "CLIP_SOFT": "S",
+    "CLIP_HARD": "H",
+    "PAD": "P",
+    "SEQUENCE_MATCH": "=",
+    "SEQUENCE_MISMATCH": "X"
+};
+
+const Ga4ghAlignmentReader = function (config, genome) {
+
+    this.config = config;
+    this.genome = genome;
+    this.url = config.url;
+    this.filter = new BamFilter(config.filter);
+    this.readGroupSetIds = config.readGroupSetIds;
+    this.authKey = config.authKey;   // Might be undefined or nill
+
+    this.samplingWindowSize = config.samplingWindowSize === undefined ? 100 : config.samplingWindowSize;
+    this.samplingDepth = config.samplingDepth === undefined ? 1000 : config.samplingDepth;
+    if (config.viewAsPairs) {
+        this.pairsSupported = true;
+    } else {
+        this.pairsSupported = config.pairsSupported === undefined ? true : config.pairsSupported;
+    }
+};
+
+
+Ga4ghAlignmentReader.prototype.readAlignments = function (chr, bpStart, bpEnd) {
+
+    const genome = this.genome;
+    const self = this;
+
+    return getChrAliasTable()
+
+        .then(function (chrAliasTable) {
+
+            var queryChr = chrAliasTable.hasOwnProperty(chr) ? chrAliasTable[chr] : chr,
+                readURL = self.url + "/reads/search";
+
+            return ga4ghSearch({
+                url: readURL,
+                body: {
+                    "readGroupSetIds": [self.readGroupSetIds],
+                    "referenceName": queryChr,
+                    "start": bpStart,
+                    "end": bpEnd,
+                    "pageSize": "10000"
+                },
+                decode: decodeGa4ghReads,
+                results: new AlignmentContainer(chr, bpStart, bpEnd, self.config)
+            })
+        })
+
+
+    function getChrAliasTable() {
+
+        if (self.chrAliasTable) {
+
+            return Promise.resolve(self.chrAliasTable)
+
+        } else {
+
+            return self.readMetadata()
+
+                .then(function (json) {
+
+                    self.chrAliasTable = {};
+
+                    if (genome && json.readGroups && json.readGroups.length > 0) {
+
+                        var referenceSetId = json.readGroups[0].referenceSetId;
+
+                        if (referenceSetId) {
+
+                            // Query for reference names to build an alias table (map of genome ref names -> dataset ref names)
+                            var readURL = self.url + "/references/search";
+
+                            return ga4ghSearch({
+                                url: readURL,
+                                body: {
+                                    "referenceSetId": referenceSetId
+                                },
+                                decode: function (j) {
+                                    return j.references
+                                }
+                            })
+                                .then(function (references) {
+
+
+                                    references.forEach(function (ref) {
+                                        var refName = ref.name,
+                                            alias = genome.getChromosomeName(refName);
+                                        self.chrAliasTable[alias] = refName;
+                                    });
+
+
+                                    return self.chrAliasTable
+
+                                })
+                        } else {
+
+                            // Try hardcoded constants -- workaround for non-compliant data at Google
+                            populateChrAliasTable(self.chrAliasTable, self.config.datasetId);
+
+                            return self.chrAliasTable
+                        }
+                    } else {
+                        // No browser object, can't build map.  This can occur when run from unit tests
+                        return self.chrAliasTable
+                    }
+                })
+        }
+    }
+
+    /**
+     * Decode an array of ga4gh read records
+     *
+
+     */
+    function decodeGa4ghReads(j) {
+
+        var i,
+            jsonRecords = j.alignments,
+            len = jsonRecords.length,
+            alignment,
+            jsonAlignment,
+            cigarDecoded,
+            alignments = [],
+            mate,
+            blocks;
+
+        for (i = 0; i < len; i++) {
+
+            let record = jsonRecords[i];
+
+            alignment = new BamAlignment();
+
+            alignment.readName = record.fragmentName;
+            alignment.properPlacement = record.properPlacement;
+            alignment.duplicateFragment = record.duplicateFragment;
+            alignment.numberReads = record.numberReads;
+            alignment.fragmentLength = record.fragmentLength;
+            alignment.readNumber = record.readNumber;
+            alignment.failedVendorQualityChecks = record.failedVendorQualityChecks;
+            alignment.secondaryAlignment = record.secondaryAlignment;
+            alignment.supplementaryAlignment = record.supplementaryAlignment;
+            alignment.seq = record.alignedSequence;
+            alignment.qual = record.alignedQuality;
+            alignment.matePos = record.nextMatePosition;
+            alignment.tagDict = record.info;
+            alignment.flags = encodeFlags();
+
+
+            jsonAlignment = record.alignment;
+            if (jsonAlignment) {
+                alignment.mapped = true;
+
+                alignment.chr = record.alignment.position.referenceName;
+                if (genome) alignment.chr = genome.getChromosomeName(alignment.chr);
+
+                alignment.start = parseInt(record.alignment.position.position);
+                alignment.strand = !(record.alignment.position.reverseStrand);
+                alignment.mq = record.alignment.mappingQuality;
+                alignment.cigar = encodeCigar(record.alignment.cigar);
+                cigarDecoded = translateCigar(record.alignment.cigar);
+
+                alignment.lengthOnRef = cigarDecoded.lengthOnRef;
+
+                blocks = makeBlocks(alignment, cigarDecoded.array);
+                alignment.blocks = blocks.blocks;
+                alignment.insertions = blocks.insertions;
+
+            } else {
+                alignment.mapped = false;
+            }
+
+            mate = record.nextMatePosition;
+            if (mate) {
+                alignment.mate = {
+                    chr: mate.referenceFrame,
+                    position: parseInt(mate.position),
+                    strand: !mate.reverseStrand
+                };
+            }
+
+            if (self.filter.pass(alignment)) {
+                alignments.push(alignment);
+            }
+
+
+        }
+
+        return alignments
+
+
+        // Encode a cigar string -- used for popup text
+        function encodeCigar(cigarArray) {
+
+            var cigarString = "";
+            cigarArray.forEach(function (cigarUnit) {
+                var op = CigarOperationTable[cigarUnit.operation],
+                    len = cigarUnit.operationLength;
+                cigarString = cigarString + (len + op);
+            });
+
+            return cigarString
+        }
+
+        // TODO -- implement me
+        function encodeFlags(json) {
+            return 0
+        }
+
+        function translateCigar(cigar) {
+
+            var cigarUnit, opLen, opLtr,
+                lengthOnRef = 0,
+                cigarArray = [],
+                i;
+
+            for (i = 0; i < cigar.length; i++) {
+
+                cigarUnit = cigar[i];
+
+                opLtr = CigarOperationTable[cigarUnit.operation];
+                opLen = parseInt(cigarUnit.operationLength);    // Google represents long as a String
+
+                if (opLtr === 'M' || opLtr === 'EQ' || opLtr === 'X' || opLtr === 'D' || opLtr === 'N' || opLtr === '=')
+                    lengthOnRef += opLen;
+
+                cigarArray.push({len: opLen, ltr: opLtr});
+
+            }
+
+            return {lengthOnRef: lengthOnRef, array: cigarArray}
+        }
+
+
+        /**
+         * Split the alignment record into blocks as specified in the cigarArray.  Each aligned block contains
+         * its portion of the read sequence and base quality strings.  A read sequence or base quality string
+         * of "*" indicates the value is not recorded.  In all other cases the length of the block sequence (block.seq)
+         * and quality string (block.qual) must == the block length.
+         *
+         * NOTE: Insertions are not yet treated // TODO
+         *
+         * @param record
+         * @param cigarArray
+         * @returns array of blocks
+         */
+        function makeBlocks(record, cigarArray) {
+
+
+            var blocks = [],
+                gaps,
+                insertions,
+                seqOffset = 0,
+                pos = record.start,
+                len = cigarArray.length,
+                gapType;
+
+            for (var i = 0; i < len; i++) {
+
+                var c = cigarArray[i];
+
+                switch (c.ltr) {
+                    case 'H' :
+                        break // ignore hard clips
+                    case 'P' :
+                        break // ignore pads
+                    case 'S' :
+                        seqOffset += c.len;
+                        gapType = 'S';
+                        break // soft clip read bases
+                    case 'N' :
+                    case 'D' :
+                        if (gaps === undefined) {
+                            gaps = [];
+                        }
+                        gaps.push({
+                            start: pos,
+                            len: c.len,
+                            type: c.ltr
+                        });
+                        pos += c.len;
+                        break
+                    case 'I' :
+                        if (insertions === undefined) insertions = [];
+                        insertions.push(new AlignmentBlock({
+                            start: pos,
+                            len: c.len,
+                            seqOffset: seqOffset
+                        }));
+                        seqOffset += c.len;
+                        break
+                    case 'M' :
+                    case 'EQ' :
+                    case '=' :
+                    case 'X' :
+                        blocks.push(
+                            new AlignmentBlock({
+                                start: pos,
+                                len: c.len,
+                                seqOffset: seqOffset,
+                                gapType: gapType
+                            }));
+                        seqOffset += c.len;
+                        pos += c.len;
+
+                        break
+
+                    default :
+                        console.log("Error processing cigar element: " + c.len + c.ltr);
+                }
+            }
+
+            return {blocks: blocks, insertions: insertions, gaps: gaps}
+        }
+    }
+};
+
+
+Ga4ghAlignmentReader.prototype.readMetadata = function () {
+
+    return ga4ghGet({
+        url: this.url,
+        entity: "readgroupsets",
+        entityId: this.readGroupSetIds
+    })
+};
+
+/**
+ * Hardcoded hack to work around some non-compliant google datasets
+ *
+ * @param chrAliasTable
+ * @param datasetId
+ */
+function populateChrAliasTable(chrAliasTable, datasetId) {
+    var i;
+    if ("461916304629" === datasetId || "337315832689" === datasetId) {
+        for (i = 1; i < 23; i++) {
+            chrAliasTable["chr" + i] = i;
+        }
+        chrAliasTable["chrX"] = "X";
+        chrAliasTable["chrY"] = "Y";
+        chrAliasTable["chrM"] = "MT";
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class BamSource {
+
+    constructor(config, browser) {
+
+        const genome = browser.genome;
+
+        this.config = config;
+        this.genome = genome;
+
+        if (isDataURL(config.url)) {
+            this.config.indexed = false;
+        }
+
+        if ("ga4gh" === config.sourceType) {
+            this.bamReader = new Ga4ghAlignmentReader(config, genome);
+        } else if ("pysam" === config.sourceType) {
+            this.bamReader = new BamWebserviceReader(config, genome);
+        } else if ("htsget" === config.sourceType) {
+            this.bamReader = new HtsgetBamReader(config, genome);
+        } else if ("shardedBam" === config.sourceType) {
+            this.bamReader = new ShardedBamReader(config, genome);
+        } else if ("cram" === config.format) {
+            this.bamReader = new CramReader(config, genome, browser);
+        } else {
+            if (!this.config.indexURL && config.indexed !== false) {
+                if (isString$2(this.config.url)) {
+                    const inferIndexPath$1 = inferIndexPath(this.config.url, "bai");
+                    if (inferIndexPath$1) {
+                        console.error(`Warning: no indexURL specified for ${this.config.url}.  Guessing ${this.baiPath}`);
+                        this.config.indexURL = inferIndexPath$1;
+                    } else {
+                        console.error(`Warning: no indexURL specified for ${this.config.url}.`);
+                        this.config.indexed = false;
+                    }
+                } else {
+                    console.error(`Warning: no indexURL specified for ${this.config.name}.`);
+                    this.config.indexed = false;
+                }
+            }
+
+            if (this.config.indexed !== false) { // && this.config.indexURL) {
+                this.bamReader = new BamReader(config, genome);
+            } else {
+                this.bamReader = new BamReaderNonIndexed(config, genome);
+            }
+        }
+
+        this.viewAsPairs = config.viewAsPairs;
+        this.showSoftClips = config.showSoftClips;
+    }
+
+    setViewAsPairs(bool) {
+        this.viewAsPairs = bool;
+    }
+
+    setShowSoftClips(bool) {
+        this.showSoftClips = bool;
+    }
+
+    async getAlignments(chr, bpStart, bpEnd) {
+
+        const genome = this.genome;
+        const showSoftClips = this.showSoftClips;
+
+        const alignmentContainer = await this.bamReader.readAlignments(chr, bpStart, bpEnd);
+        let alignments = alignmentContainer.alignments;
+        if (!this.viewAsPairs) {
+            alignments = unpairAlignments([{alignments: alignments}]);
+        }
+        const hasAlignments = alignments.length > 0;
+        alignmentContainer.packedAlignmentRows = packAlignmentRows(alignments, alignmentContainer.start, alignmentContainer.end, showSoftClips);
+
+        this.alignmentContainer = alignmentContainer;
+
+        if (hasAlignments) {
+            const sequence = await genome.sequence.getSequence(chr, alignmentContainer.start, alignmentContainer.end);
+            if (sequence) {
+                alignmentContainer.coverageMap.refSeq = sequence;    // TODO -- fix this
+                alignmentContainer.sequence = sequence;           // TODO -- fix this
+                return alignmentContainer
+            } else {
+                console.error("No sequence for: " + chr + ":" + alignmentContainer.start + "-" + alignmentContainer.end);
+            }
+        }
+        return alignmentContainer
+
+    }
+}
+
+function paintAxis(ctx, pixelWidth, pixelHeight) {
+
+    var x1,
+        x2,
+        y1,
+        y2,
+        a,
+        b,
+        reference,
+        shim,
+        font = {
+            'font': 'normal 10px Arial',
+            'textAlign': 'right',
+            'strokeStyle': "black"
+        };
+
+    if (undefined === this.dataRange || undefined === this.dataRange.max || undefined === this.dataRange.min) {
+        return
+    }
+
+    let flipAxis = (undefined === this.flipAxis) ? false : this.flipAxis;
+
+    IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+
+    reference = 0.95 * pixelWidth;
+    x1 = reference - 8;
+    x2 = reference;
+
+    //shim = 0.5 * 0.125;
+    shim = .01;
+    y1 = y2 = shim * pixelHeight;
+
+    a = {x: x2, y: y1};
+
+    // tick
+    IGVGraphics.strokeLine(ctx, x1, y1, x2, y2, font);
+    IGVGraphics.fillText(ctx, prettyPrint(flipAxis ? this.dataRange.min : this.dataRange.max), x1 + 4, y1 + 12, font);
+
+    //shim = 0.25 * 0.125;
+    y1 = y2 = (1.0 - shim) * pixelHeight;
+
+    b = {x: x2, y: y1};
+
+    // tick
+    IGVGraphics.strokeLine(ctx, x1, y1, x2, y2, font);
+    IGVGraphics.fillText(ctx, prettyPrint(flipAxis ? this.dataRange.max : this.dataRange.min), x1 + 4, y1 - 4, font);
+
+    IGVGraphics.strokeLine(ctx, a.x, a.y, b.x, b.y, font);
+
+    function prettyPrint(number) {
+        // if number >= 100, show whole number
+        // if >= 1 show 1 significant digits
+        // if <  1 show 2 significant digits
+
+        if (number === 0) {
+            return "0"
+        } else if (Math.abs(number) >= 10) {
+            return number.toFixed()
+        } else if (Math.abs(number) >= 1) {
+            return number.toFixed(1)
+        } else {
+            return number.toFixed(2)
+        }
+    }
+}
+
+class Locus {
+
+    constructor({chr, start, end}) {
+        this.chr = chr;
+        this.start = start;
+        this.end = end;
+    }
+
+
+    contains(locus) {
+        return locus.chr === this.chr && locus.start >= this.start && locus.end <= this.end
+    }
+
+    overlaps(locus) {
+        return locus.chr === this.chr && !(locus.end < this.start || locus.start > this.end)
+    }
+
+    extend(l) {
+        if (l.chr !== this.chr) return
+        this.start = Math.min(l.start, this.start);
+        this.end = Math.max(l.end, this.end);
+    }
+
+    getLocusString() {
+        if ('all' === this.chr) {
+            return 'all'
+        } else {
+            const ss = numberFormatter$1(Math.floor(this.start) + 1);
+            const ee = numberFormatter$1(Math.round(this.end));
+            return `${this.chr}:${ss}-${ee}`
+        }
+    }
+
+    static fromLocusString(str) {
+        if ('all' === str) {
+            return new Locus({chr: 'all'})
+        }
+        const parts = str.split(':');
+        const chr = parts[0];
+        const se = parts[1].split("-");
+        const start = Number.parseInt(se[0].replace(/,/g, "")) - 1;
+        const end = Number.parseInt(se[1].replace(/,/g, ""));
+        return new Locus({chr, start, end})
+    }
+}
+
+/*!
+ * vanilla-picker v2.12.1
+ * https://vanilla-picker.js.org
+ *
+ * Copyright 2017-2021 Andreas Borgen (https://github.com/Sphinxxxx), Adam Brooks (https://github.com/dissimulate)
+ * Released under the ISC license.
+ */
+var classCallCheck = function (instance, Constructor) {
+  if (!(instance instanceof Constructor)) {
+    throw new TypeError("Cannot call a class as a function");
+  }
+};
+
+var createClass = function () {
+  function defineProperties(target, props) {
+    for (var i = 0; i < props.length; i++) {
+      var descriptor = props[i];
+      descriptor.enumerable = descriptor.enumerable || false;
+      descriptor.configurable = true;
+      if ("value" in descriptor) descriptor.writable = true;
+      Object.defineProperty(target, descriptor.key, descriptor);
+    }
+  }
+
+  return function (Constructor, protoProps, staticProps) {
+    if (protoProps) defineProperties(Constructor.prototype, protoProps);
+    if (staticProps) defineProperties(Constructor, staticProps);
+    return Constructor;
+  };
+}();
+
+var slicedToArray = function () {
+  function sliceIterator(arr, i) {
+    var _arr = [];
+    var _n = true;
+    var _d = false;
+    var _e = undefined;
+
+    try {
+      for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
+        _arr.push(_s.value);
+
+        if (i && _arr.length === i) break;
+      }
+    } catch (err) {
+      _d = true;
+      _e = err;
+    } finally {
+      try {
+        if (!_n && _i["return"]) _i["return"]();
+      } finally {
+        if (_d) throw _e;
+      }
+    }
+
+    return _arr;
+  }
+
+  return function (arr, i) {
+    if (Array.isArray(arr)) {
+      return arr;
+    } else if (Symbol.iterator in Object(arr)) {
+      return sliceIterator(arr, i);
+    } else {
+      throw new TypeError("Invalid attempt to destructure non-iterable instance");
+    }
+  };
+}();
+
+String.prototype.startsWith = String.prototype.startsWith || function (needle) {
+    return this.indexOf(needle) === 0;
+};
+String.prototype.padStart = String.prototype.padStart || function (len, pad) {
+    var str = this;while (str.length < len) {
+        str = pad + str;
+    }return str;
+};
+
+var colorNames = { cb: '0f8ff', tqw: 'aebd7', q: '-ffff', qmrn: '7fffd4', zr: '0ffff', bg: '5f5dc', bsq: 'e4c4', bck: '---', nch: 'ebcd', b: '--ff', bvt: '8a2be2', brwn: 'a52a2a', brw: 'deb887', ctb: '5f9ea0', hrt: '7fff-', chcT: 'd2691e', cr: '7f50', rnw: '6495ed', crns: '8dc', crms: 'dc143c', cn: '-ffff', Db: '--8b', Dcn: '-8b8b', Dgnr: 'b8860b', Dgr: 'a9a9a9', Dgrn: '-64-', Dkhk: 'bdb76b', Dmgn: '8b-8b', Dvgr: '556b2f', Drng: '8c-', Drch: '9932cc', Dr: '8b--', Dsmn: 'e9967a', Dsgr: '8fbc8f', DsTb: '483d8b', DsTg: '2f4f4f', Dtrq: '-ced1', Dvt: '94-d3', ppnk: '1493', pskb: '-bfff', mgr: '696969', grb: '1e90ff', rbrc: 'b22222', rwht: 'af0', stg: '228b22', chs: '-ff', gnsb: 'dcdcdc', st: '8f8ff', g: 'd7-', gnr: 'daa520', gr: '808080', grn: '-8-0', grnw: 'adff2f', hnw: '0fff0', htpn: '69b4', nnr: 'cd5c5c', ng: '4b-82', vr: '0', khk: '0e68c', vnr: 'e6e6fa', nrb: '0f5', wngr: '7cfc-', mnch: 'acd', Lb: 'add8e6', Lcr: '08080', Lcn: 'e0ffff', Lgnr: 'afad2', Lgr: 'd3d3d3', Lgrn: '90ee90', Lpnk: 'b6c1', Lsmn: 'a07a', Lsgr: '20b2aa', Lskb: '87cefa', LsTg: '778899', Lstb: 'b0c4de', Lw: 'e0', m: '-ff-', mgrn: '32cd32', nn: 'af0e6', mgnt: '-ff', mrn: '8--0', mqm: '66cdaa', mmb: '--cd', mmrc: 'ba55d3', mmpr: '9370db', msg: '3cb371', mmsT: '7b68ee', '': '-fa9a', mtr: '48d1cc', mmvt: 'c71585', mnLb: '191970', ntc: '5fffa', mstr: 'e4e1', mccs: 'e4b5', vjw: 'dead', nv: '--80', c: 'df5e6', v: '808-0', vrb: '6b8e23', rng: 'a5-', rngr: '45-', rch: 'da70d6', pgnr: 'eee8aa', pgrn: '98fb98', ptrq: 'afeeee', pvtr: 'db7093', ppwh: 'efd5', pchp: 'dab9', pr: 'cd853f', pnk: 'c0cb', pm: 'dda0dd', pwrb: 'b0e0e6', prp: '8-080', cc: '663399', r: '--', sbr: 'bc8f8f', rb: '4169e1', sbrw: '8b4513', smn: 'a8072', nbr: '4a460', sgrn: '2e8b57', ssh: '5ee', snn: 'a0522d', svr: 'c0c0c0', skb: '87ceeb', sTb: '6a5acd', sTgr: '708090', snw: 'afa', n: '-ff7f', stb: '4682b4', tn: 'd2b48c', t: '-8080', thst: 'd8bfd8', tmT: '6347', trqs: '40e0d0', vt: 'ee82ee', whT: '5deb3', wht: '', hts: '5f5f5', w: '-', wgrn: '9acd32' };
+
+function printNum(num) {
+    var decs = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;
+
+    var str = decs > 0 ? num.toFixed(decs).replace(/0+$/, '').replace(/\.$/, '') : num.toString();
+    return str || '0';
+}
+
+var Color = function () {
+    function Color(r, g, b, a) {
+        classCallCheck(this, Color);
+
+
+        var that = this;
+        function parseString(input) {
+
+            if (input.startsWith('hsl')) {
+                var _input$match$map = input.match(/([\-\d\.e]+)/g).map(Number),
+                    _input$match$map2 = slicedToArray(_input$match$map, 4),
+                    h = _input$match$map2[0],
+                    s = _input$match$map2[1],
+                    l = _input$match$map2[2],
+                    _a = _input$match$map2[3];
+
+                if (_a === undefined) {
+                    _a = 1;
+                }
+
+                h /= 360;
+                s /= 100;
+                l /= 100;
+                that.hsla = [h, s, l, _a];
+            } else if (input.startsWith('rgb')) {
+                var _input$match$map3 = input.match(/([\-\d\.e]+)/g).map(Number),
+                    _input$match$map4 = slicedToArray(_input$match$map3, 4),
+                    _r = _input$match$map4[0],
+                    _g = _input$match$map4[1],
+                    _b = _input$match$map4[2],
+                    _a2 = _input$match$map4[3];
+
+                if (_a2 === undefined) {
+                    _a2 = 1;
+                }
+
+                that.rgba = [_r, _g, _b, _a2];
+            } else {
+                if (input.startsWith('#')) {
+                    that.rgba = Color.hexToRgb(input);
+                } else {
+                    that.rgba = Color.nameToRgb(input) || Color.hexToRgb(input);
+                }
+            }
+        }
+
+        if (r === undefined) ; else if (Array.isArray(r)) {
+            this.rgba = r;
+        } else if (b === undefined) {
+            var color = r && '' + r;
+            if (color) {
+                parseString(color.toLowerCase());
+            }
+        } else {
+            this.rgba = [r, g, b, a === undefined ? 1 : a];
+        }
+    }
+
+    createClass(Color, [{
+        key: 'printRGB',
+        value: function printRGB(alpha) {
+            var rgb = alpha ? this.rgba : this.rgba.slice(0, 3),
+                vals = rgb.map(function (x, i) {
+                return printNum(x, i === 3 ? 3 : 0);
+            });
+
+            return alpha ? 'rgba(' + vals + ')' : 'rgb(' + vals + ')';
+        }
+    }, {
+        key: 'printHSL',
+        value: function printHSL(alpha) {
+            var mults = [360, 100, 100, 1],
+                suff = ['', '%', '%', ''];
+
+            var hsl = alpha ? this.hsla : this.hsla.slice(0, 3),
+                vals = hsl.map(function (x, i) {
+                return printNum(x * mults[i], i === 3 ? 3 : 1) + suff[i];
+            });
+
+            return alpha ? 'hsla(' + vals + ')' : 'hsl(' + vals + ')';
+        }
+    }, {
+        key: 'printHex',
+        value: function printHex(alpha) {
+            var hex = this.hex;
+            return alpha ? hex : hex.substring(0, 7);
+        }
+    }, {
+        key: 'rgba',
+        get: function get() {
+            if (this._rgba) {
+                return this._rgba;
+            }
+            if (!this._hsla) {
+                throw new Error('No color is set');
+            }
+
+            return this._rgba = Color.hslToRgb(this._hsla);
+        },
+        set: function set(rgb) {
+            if (rgb.length === 3) {
+                rgb[3] = 1;
+            }
+
+            this._rgba = rgb;
+            this._hsla = null;
+        }
+    }, {
+        key: 'rgbString',
+        get: function get() {
+            return this.printRGB();
+        }
+    }, {
+        key: 'rgbaString',
+        get: function get() {
+            return this.printRGB(true);
+        }
+    }, {
+        key: 'hsla',
+        get: function get() {
+            if (this._hsla) {
+                return this._hsla;
+            }
+            if (!this._rgba) {
+                throw new Error('No color is set');
+            }
+
+            return this._hsla = Color.rgbToHsl(this._rgba);
+        },
+        set: function set(hsl) {
+            if (hsl.length === 3) {
+                hsl[3] = 1;
+            }
+
+            this._hsla = hsl;
+            this._rgba = null;
+        }
+    }, {
+        key: 'hslString',
+        get: function get() {
+            return this.printHSL();
+        }
+    }, {
+        key: 'hslaString',
+        get: function get() {
+            return this.printHSL(true);
+        }
+    }, {
+        key: 'hex',
+        get: function get() {
+            var rgb = this.rgba,
+                hex = rgb.map(function (x, i) {
+                return i < 3 ? x.toString(16) : Math.round(x * 255).toString(16);
+            });
+
+            return '#' + hex.map(function (x) {
+                return x.padStart(2, '0');
+            }).join('');
+        },
+        set: function set(hex) {
+            this.rgba = Color.hexToRgb(hex);
+        }
+    }], [{
+        key: 'hexToRgb',
+        value: function hexToRgb(input) {
+
+            var hex = (input.startsWith('#') ? input.slice(1) : input).replace(/^(\w{3})$/, '$1F').replace(/^(\w)(\w)(\w)(\w)$/, '$1$1$2$2$3$3$4$4').replace(/^(\w{6})$/, '$1FF');
+
+            if (!hex.match(/^([0-9a-fA-F]{8})$/)) {
+                throw new Error('Unknown hex color; ' + input);
+            }
+
+            var rgba = hex.match(/^(\w\w)(\w\w)(\w\w)(\w\w)$/).slice(1).map(function (x) {
+                return parseInt(x, 16);
+            });
+
+            rgba[3] = rgba[3] / 255;
+            return rgba;
+        }
+    }, {
+        key: 'nameToRgb',
+        value: function nameToRgb(input) {
+
+            var hash = input.toLowerCase().replace('at', 'T').replace(/[aeiouyldf]/g, '').replace('ght', 'L').replace('rk', 'D').slice(-5, 4),
+                hex = colorNames[hash];
+            return hex === undefined ? hex : Color.hexToRgb(hex.replace(/\-/g, '00').padStart(6, 'f'));
+        }
+    }, {
+        key: 'rgbToHsl',
+        value: function rgbToHsl(_ref) {
+            var _ref2 = slicedToArray(_ref, 4),
+                r = _ref2[0],
+                g = _ref2[1],
+                b = _ref2[2],
+                a = _ref2[3];
+
+            r /= 255;
+            g /= 255;
+            b /= 255;
+
+            var max = Math.max(r, g, b),
+                min = Math.min(r, g, b);
+            var h = void 0,
+                s = void 0,
+                l = (max + min) / 2;
+
+            if (max === min) {
+                h = s = 0;
+            } else {
+                var d = max - min;
+                s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
+                switch (max) {
+                    case r:
+                        h = (g - b) / d + (g < b ? 6 : 0);break;
+                    case g:
+                        h = (b - r) / d + 2;break;
+                    case b:
+                        h = (r - g) / d + 4;break;
+                }
+
+                h /= 6;
+            }
+
+            return [h, s, l, a];
+        }
+    }, {
+        key: 'hslToRgb',
+        value: function hslToRgb(_ref3) {
+            var _ref4 = slicedToArray(_ref3, 4),
+                h = _ref4[0],
+                s = _ref4[1],
+                l = _ref4[2],
+                a = _ref4[3];
+
+            var r = void 0,
+                g = void 0,
+                b = void 0;
+
+            if (s === 0) {
+                r = g = b = l;
+            } else {
+                var hue2rgb = function hue2rgb(p, q, t) {
+                    if (t < 0) t += 1;
+                    if (t > 1) t -= 1;
+                    if (t < 1 / 6) return p + (q - p) * 6 * t;
+                    if (t < 1 / 2) return q;
+                    if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;
+                    return p;
+                };
+
+                var q = l < 0.5 ? l * (1 + s) : l + s - l * s,
+                    p = 2 * l - q;
+
+                r = hue2rgb(p, q, h + 1 / 3);
+                g = hue2rgb(p, q, h);
+                b = hue2rgb(p, q, h - 1 / 3);
+            }
+
+            var rgba = [r * 255, g * 255, b * 255].map(Math.round);
+            rgba[3] = a;
+
+            return rgba;
+        }
+    }]);
+    return Color;
+}();
+
+var EventBucket = function () {
+    function EventBucket() {
+        classCallCheck(this, EventBucket);
+
+        this._events = [];
+    }
+
+    createClass(EventBucket, [{
+        key: 'add',
+        value: function add(target, type, handler) {
+            target.addEventListener(type, handler, false);
+            this._events.push({
+                target: target,
+                type: type,
+                handler: handler
+            });
+        }
+    }, {
+        key: 'remove',
+        value: function remove(target, type, handler) {
+            this._events = this._events.filter(function (e) {
+                var isMatch = true;
+                if (target && target !== e.target) {
+                    isMatch = false;
+                }
+                if (type && type !== e.type) {
+                    isMatch = false;
+                }
+                if (handler && handler !== e.handler) {
+                    isMatch = false;
+                }
+
+                if (isMatch) {
+                    EventBucket._doRemove(e.target, e.type, e.handler);
+                }
+                return !isMatch;
+            });
+        }
+    }, {
+        key: 'destroy',
+        value: function destroy() {
+            this._events.forEach(function (e) {
+                return EventBucket._doRemove(e.target, e.type, e.handler);
+            });
+            this._events = [];
+        }
+    }], [{
+        key: '_doRemove',
+        value: function _doRemove(target, type, handler) {
+            target.removeEventListener(type, handler, false);
+        }
+    }]);
+    return EventBucket;
+}();
+
+function parseHTML(htmlString) {
+
+    var div = document.createElement('div');
+    div.innerHTML = htmlString;
+    return div.firstElementChild;
+}
+
+function dragTrack(eventBucket, area, callback) {
+    var dragging = false;
+
+    function clamp(val, min, max) {
+        return Math.max(min, Math.min(val, max));
+    }
+
+    function onMove(e, info, starting) {
+        if (starting) {
+            dragging = true;
+        }
+        if (!dragging) {
+            return;
+        }
+
+        e.preventDefault();
+
+        var bounds = area.getBoundingClientRect(),
+            w = bounds.width,
+            h = bounds.height,
+            x = info.clientX,
+            y = info.clientY;
+
+        var relX = clamp(x - bounds.left, 0, w),
+            relY = clamp(y - bounds.top, 0, h);
+
+        callback(relX / w, relY / h);
+    }
+
+    function onMouse(e, starting) {
+        var button = e.buttons === undefined ? e.which : e.buttons;
+        if (button === 1) {
+            onMove(e, e, starting);
+        } else {
+            dragging = false;
+        }
+    }
+
+    function onTouch(e, starting) {
+        if (e.touches.length === 1) {
+            onMove(e, e.touches[0], starting);
+        } else {
+            dragging = false;
+        }
+    }
+
+    eventBucket.add(area, 'mousedown', function (e) {
+        onMouse(e, true);
+    });
+    eventBucket.add(area, 'touchstart', function (e) {
+        onTouch(e, true);
+    });
+    eventBucket.add(window, 'mousemove', onMouse);
+    eventBucket.add(area, 'touchmove', onTouch);
+    eventBucket.add(window, 'mouseup', function (e) {
+        dragging = false;
+    });
+    eventBucket.add(area, 'touchend', function (e) {
+        dragging = false;
+    });
+    eventBucket.add(area, 'touchcancel', function (e) {
+        dragging = false;
+    });
+}
+
+var BG_TRANSP = 'linear-gradient(45deg, lightgrey 25%, transparent 25%, transparent 75%, lightgrey 75%) 0 0 / 2em 2em,\n                   linear-gradient(45deg, lightgrey 25%,       white 25%,       white 75%, lightgrey 75%) 1em 1em / 2em 2em';
+var HUES = 360;
+
+var EVENT_KEY = 'keydown',
+    EVENT_CLICK_OUTSIDE = 'mousedown',
+    EVENT_TAB_MOVE = 'focusin';
+
+function $(selector, context) {
+    return (context || document).querySelector(selector);
+}
+
+function stopEvent(e) {
+
+    e.preventDefault();
+    e.stopPropagation();
+}
+function onKey(bucket, target, keys, handler, stop) {
+    bucket.add(target, EVENT_KEY, function (e) {
+        if (keys.indexOf(e.key) >= 0) {
+            if (stop) {
+                stopEvent(e);
+            }
+            handler(e);
+        }
+    });
+}
+
+var Picker = function () {
+    function Picker(options) {
+        classCallCheck(this, Picker);
+
+
+        this.settings = {
+
+            popup: 'right',
+            layout: 'default',
+            alpha: true,
+            editor: true,
+            editorFormat: 'hex',
+            cancelButton: false,
+            defaultColor: '#0cf'
+        };
+
+        this._events = new EventBucket();
+
+        this.onChange = null;
+
+        this.onDone = null;
+
+        this.onOpen = null;
+
+        this.onClose = null;
+
+        this.setOptions(options);
+    }
+
+    createClass(Picker, [{
+        key: 'setOptions',
+        value: function setOptions(options) {
+            var _this = this;
+
+            if (!options) {
+                return;
+            }
+            var settings = this.settings;
+
+            function transfer(source, target, skipKeys) {
+                for (var key in source) {
+                    if (skipKeys && skipKeys.indexOf(key) >= 0) {
+                        continue;
+                    }
+
+                    target[key] = source[key];
+                }
+            }
+
+            if (options instanceof HTMLElement) {
+                settings.parent = options;
+            } else {
+
+                if (settings.parent && options.parent && settings.parent !== options.parent) {
+                    this._events.remove(settings.parent);
+                    this._popupInited = false;
+                }
+
+                transfer(options, settings);
+
+                if (options.onChange) {
+                    this.onChange = options.onChange;
+                }
+                if (options.onDone) {
+                    this.onDone = options.onDone;
+                }
+                if (options.onOpen) {
+                    this.onOpen = options.onOpen;
+                }
+                if (options.onClose) {
+                    this.onClose = options.onClose;
+                }
+
+                var col = options.color || options.colour;
+                if (col) {
+                    this._setColor(col);
+                }
+            }
+
+            var parent = settings.parent;
+            if (parent && settings.popup && !this._popupInited) {
+
+                var openProxy = function openProxy(e) {
+                    return _this.openHandler(e);
+                };
+
+                this._events.add(parent, 'click', openProxy);
+
+                onKey(this._events, parent, [' ', 'Spacebar', 'Enter'], openProxy);
+
+                this._popupInited = true;
+            } else if (options.parent && !settings.popup) {
+                this.show();
+            }
+        }
+    }, {
+        key: 'openHandler',
+        value: function openHandler(e) {
+            if (this.show()) {
+
+                e && e.preventDefault();
+
+                this.settings.parent.style.pointerEvents = 'none';
+
+                var toFocus = e && e.type === EVENT_KEY ? this._domEdit : this.domElement;
+                setTimeout(function () {
+                    return toFocus.focus();
+                }, 100);
+
+                if (this.onOpen) {
+                    this.onOpen(this.colour);
+                }
+            }
+        }
+    }, {
+        key: 'closeHandler',
+        value: function closeHandler(e) {
+            var event = e && e.type;
+            var doHide = false;
+
+            if (!e) {
+                doHide = true;
+            } else if (event === EVENT_CLICK_OUTSIDE || event === EVENT_TAB_MOVE) {
+
+                var knownTime = (this.__containedEvent || 0) + 100;
+                if (e.timeStamp > knownTime) {
+                    doHide = true;
+                }
+            } else {
+
+                stopEvent(e);
+
+                doHide = true;
+            }
+
+            if (doHide && this.hide()) {
+                this.settings.parent.style.pointerEvents = '';
+
+                if (event !== EVENT_CLICK_OUTSIDE) {
+                    this.settings.parent.focus();
+                }
+
+                if (this.onClose) {
+                    this.onClose(this.colour);
+                }
+            }
+        }
+    }, {
+        key: 'movePopup',
+        value: function movePopup(options, open) {
+
+            this.closeHandler();
+
+            this.setOptions(options);
+            if (open) {
+                this.openHandler();
+            }
+        }
+    }, {
+        key: 'setColor',
+        value: function setColor(color, silent) {
+            this._setColor(color, { silent: silent });
+        }
+    }, {
+        key: '_setColor',
+        value: function _setColor(color, flags) {
+            if (typeof color === 'string') {
+                color = color.trim();
+            }
+            if (!color) {
+                return;
+            }
+
+            flags = flags || {};
+            var c = void 0;
+            try {
+
+                c = new Color(color);
+            } catch (ex) {
+                if (flags.failSilently) {
+                    return;
+                }
+                throw ex;
+            }
+
+            if (!this.settings.alpha) {
+                var hsla = c.hsla;
+                hsla[3] = 1;
+                c.hsla = hsla;
+            }
+            this.colour = this.color = c;
+            this._setHSLA(null, null, null, null, flags);
+        }
+    }, {
+        key: 'setColour',
+        value: function setColour(colour, silent) {
+            this.setColor(colour, silent);
+        }
+    }, {
+        key: 'show',
+        value: function show() {
+            var parent = this.settings.parent;
+            if (!parent) {
+                return false;
+            }
+
+            if (this.domElement) {
+                var toggled = this._toggleDOM(true);
+
+                this._setPosition();
+
+                return toggled;
+            }
+
+            var html = this.settings.template || '<div class="picker_wrapper" tabindex="-1"><div class="picker_arrow"></div><div class="picker_hue picker_slider"><div class="picker_selector"></div></div><div class="picker_sl"><div class="picker_selector"></div></div><div class="picker_alpha picker_slider"><div class="picker_selector"></div></div><div class="picker_editor"><input aria-label="Type a color name or hex value"/></div><div class="picker_sample"></div><div class="picker_done"><button>Ok</button></div><div class="picker_cancel"><button>Cancel</button></div></div>';
+            var wrapper = parseHTML(html);
+
+            this.domElement = wrapper;
+            this._domH = $('.picker_hue', wrapper);
+            this._domSL = $('.picker_sl', wrapper);
+            this._domA = $('.picker_alpha', wrapper);
+            this._domEdit = $('.picker_editor input', wrapper);
+            this._domSample = $('.picker_sample', wrapper);
+            this._domOkay = $('.picker_done button', wrapper);
+            this._domCancel = $('.picker_cancel button', wrapper);
+
+            wrapper.classList.add('layout_' + this.settings.layout);
+            if (!this.settings.alpha) {
+                wrapper.classList.add('no_alpha');
+            }
+            if (!this.settings.editor) {
+                wrapper.classList.add('no_editor');
+            }
+            if (!this.settings.cancelButton) {
+                wrapper.classList.add('no_cancel');
+            }
+            this._ifPopup(function () {
+                return wrapper.classList.add('popup');
+            });
+
+            this._setPosition();
+
+            if (this.colour) {
+                this._updateUI();
+            } else {
+                this._setColor(this.settings.defaultColor);
+            }
+            this._bindEvents();
+
+            return true;
+        }
+    }, {
+        key: 'hide',
+        value: function hide() {
+            return this._toggleDOM(false);
+        }
+    }, {
+        key: 'destroy',
+        value: function destroy() {
+            this._events.destroy();
+            if (this.domElement) {
+                this.settings.parent.removeChild(this.domElement);
+            }
+        }
+    }, {
+        key: '_bindEvents',
+        value: function _bindEvents() {
+            var _this2 = this;
+
+            var that = this,
+                dom = this.domElement,
+                events = this._events;
+
+            function addEvent(target, type, handler) {
+                events.add(target, type, handler);
+            }
+
+            addEvent(dom, 'click', function (e) {
+                return e.preventDefault();
+            });
+
+            dragTrack(events, this._domH, function (x, y) {
+                return that._setHSLA(x);
+            });
+
+            dragTrack(events, this._domSL, function (x, y) {
+                return that._setHSLA(null, x, 1 - y);
+            });
+
+            if (this.settings.alpha) {
+                dragTrack(events, this._domA, function (x, y) {
+                    return that._setHSLA(null, null, null, 1 - y);
+                });
+            }
+
+            var editInput = this._domEdit;
+            {
+                addEvent(editInput, 'input', function (e) {
+                    that._setColor(this.value, { fromEditor: true, failSilently: true });
+                });
+
+                addEvent(editInput, 'focus', function (e) {
+                    var input = this;
+
+                    if (input.selectionStart === input.selectionEnd) {
+                        input.select();
+                    }
+                });
+            }
+
+            this._ifPopup(function () {
+
+                var popupCloseProxy = function popupCloseProxy(e) {
+                    return _this2.closeHandler(e);
+                };
+
+                addEvent(window, EVENT_CLICK_OUTSIDE, popupCloseProxy);
+                addEvent(window, EVENT_TAB_MOVE, popupCloseProxy);
+                onKey(events, dom, ['Esc', 'Escape'], popupCloseProxy);
+
+                var timeKeeper = function timeKeeper(e) {
+                    _this2.__containedEvent = e.timeStamp;
+                };
+                addEvent(dom, EVENT_CLICK_OUTSIDE, timeKeeper);
+
+                addEvent(dom, EVENT_TAB_MOVE, timeKeeper);
+
+                addEvent(_this2._domCancel, 'click', popupCloseProxy);
+            });
+
+            var onDoneProxy = function onDoneProxy(e) {
+                _this2._ifPopup(function () {
+                    return _this2.closeHandler(e);
+                });
+                if (_this2.onDone) {
+                    _this2.onDone(_this2.colour);
+                }
+            };
+            addEvent(this._domOkay, 'click', onDoneProxy);
+            onKey(events, dom, ['Enter'], onDoneProxy);
+        }
+    }, {
+        key: '_setPosition',
+        value: function _setPosition() {
+            var parent = this.settings.parent,
+                elm = this.domElement;
+
+            if (parent !== elm.parentNode) {
+                parent.appendChild(elm);
+            }
+
+            this._ifPopup(function (popup) {
+
+                if (getComputedStyle(parent).position === 'static') {
+                    parent.style.position = 'relative';
+                }
+
+                var cssClass = popup === true ? 'popup_right' : 'popup_' + popup;
+
+                ['popup_top', 'popup_bottom', 'popup_left', 'popup_right'].forEach(function (c) {
+
+                    if (c === cssClass) {
+                        elm.classList.add(c);
+                    } else {
+                        elm.classList.remove(c);
+                    }
+                });
+
+                elm.classList.add(cssClass);
+            });
+        }
+    }, {
+        key: '_setHSLA',
+        value: function _setHSLA(h, s, l, a, flags) {
+            flags = flags || {};
+
+            var col = this.colour,
+                hsla = col.hsla;
+
+            [h, s, l, a].forEach(function (x, i) {
+                if (x || x === 0) {
+                    hsla[i] = x;
+                }
+            });
+            col.hsla = hsla;
+
+            this._updateUI(flags);
+
+            if (this.onChange && !flags.silent) {
+                this.onChange(col);
+            }
+        }
+    }, {
+        key: '_updateUI',
+        value: function _updateUI(flags) {
+            if (!this.domElement) {
+                return;
+            }
+            flags = flags || {};
+
+            var col = this.colour,
+                hsl = col.hsla,
+                cssHue = 'hsl(' + hsl[0] * HUES + ', 100%, 50%)',
+                cssHSL = col.hslString,
+                cssHSLA = col.hslaString;
+
+            var uiH = this._domH,
+                uiSL = this._domSL,
+                uiA = this._domA,
+                thumbH = $('.picker_selector', uiH),
+                thumbSL = $('.picker_selector', uiSL),
+                thumbA = $('.picker_selector', uiA);
+
+            function posX(parent, child, relX) {
+                child.style.left = relX * 100 + '%';
+            }
+            function posY(parent, child, relY) {
+                child.style.top = relY * 100 + '%';
+            }
+
+            posX(uiH, thumbH, hsl[0]);
+
+            this._domSL.style.backgroundColor = this._domH.style.color = cssHue;
+
+            posX(uiSL, thumbSL, hsl[1]);
+            posY(uiSL, thumbSL, 1 - hsl[2]);
+
+            uiSL.style.color = cssHSL;
+
+            posY(uiA, thumbA, 1 - hsl[3]);
+
+            var opaque = cssHSL,
+                transp = opaque.replace('hsl', 'hsla').replace(')', ', 0)'),
+                bg = 'linear-gradient(' + [opaque, transp] + ')';
+
+            this._domA.style.background = bg + ', ' + BG_TRANSP;
+
+            if (!flags.fromEditor) {
+                var format = this.settings.editorFormat,
+                    alpha = this.settings.alpha;
+
+                var value = void 0;
+                switch (format) {
+                    case 'rgb':
+                        value = col.printRGB(alpha);break;
+                    case 'hsl':
+                        value = col.printHSL(alpha);break;
+                    default:
+                        value = col.printHex(alpha);
+                }
+                this._domEdit.value = value;
+            }
+
+            this._domSample.style.color = cssHSLA;
+        }
+    }, {
+        key: '_ifPopup',
+        value: function _ifPopup(actionIf, actionElse) {
+            if (this.settings.parent && this.settings.popup) {
+                actionIf && actionIf(this.settings.popup);
+            } else {
+                actionElse && actionElse();
+            }
+        }
+    }, {
+        key: '_toggleDOM',
+        value: function _toggleDOM(toVisible) {
+            var dom = this.domElement;
+            if (!dom) {
+                return false;
+            }
+
+            var displayStyle = toVisible ? '' : 'none',
+                toggle = dom.style.display !== displayStyle;
+
+            if (toggle) {
+                dom.style.display = displayStyle;
+            }
+            return toggle;
+        }
+    }]);
+    return Picker;
+}();
+
+{
+    var style = document.createElement('style');
+    style.textContent = '.picker_wrapper.no_alpha .picker_alpha{display:none}.picker_wrapper.no_editor .picker_editor{position:absolute;z-index:-1;opacity:0}.picker_wrapper.no_cancel .picker_cancel{display:none}.layout_default.picker_wrapper{display:flex;flex-flow:row wrap;justify-content:space-between;align-items:stretch;font-size:10px;width:25em;padding:.5em}.layout_default.picker_wrapper input,.layout_default.picker_wrapper button{font-size:1rem}.layout_default.picker_wrapper>*{margin:.5em}.layout_default.picker_wrapper::before{content:"";display:block;width:100%;height:0;order:1}.layout_default .picker_slider,.layout_default .picker_selector{padding:1em}.layout_default .picker_hue{width:100%}.layout_default .picker_sl{flex:1 1 auto}.layout_default .picker_sl::before{content:"";display:block;padding-bottom:100%}.layout_default .picker_editor{order:1;width:6.5rem}.layout_default .picker_editor input{width:100%;height:100%}.layout_default .picker_sample{order:1;flex:1 1 auto}.layout_default .picker_done,.layout_default .picker_cancel{order:1}.picker_wrapper{box-sizing:border-box;background:#f2f2f2;box-shadow:0 0 0 1px silver;cursor:default;font-family:sans-serif;color:#444;pointer-events:auto}.picker_wrapper:focus{outline:none}.picker_wrapper button,.picker_wrapper input{box-sizing:border-box;border:none;box-shadow:0 0 0 1px silver;outline:none}.picker_wrapper button:focus,.picker_wrapper button:active,.picker_wrapper input:focus,.picker_wrapper input:active{box-shadow:0 0 2px 1px #1e90ff}.picker_wrapper button{padding:.4em .6em;cursor:pointer;background-color:#f5f5f5;background-image:linear-gradient(0deg, gainsboro, transparent)}.picker_wrapper button:active{background-image:linear-gradient(0deg, transparent, gainsboro)}.picker_wrapper button:hover{background-color:#fff}.picker_selector{position:absolute;z-index:1;display:block;-webkit-transform:translate(-50%, -50%);transform:translate(-50%, -50%);border:2px solid #fff;border-radius:100%;box-shadow:0 0 3px 1px #67b9ff;background:currentColor;cursor:pointer}.picker_slider .picker_selector{border-radius:2px}.picker_hue{position:relative;background-image:linear-gradient(90deg, red, yellow, lime, cyan, blue, magenta, red);box-shadow:0 0 0 1px silver}.picker_sl{position:relative;box-shadow:0 0 0 1px silver;background-image:linear-gradient(180deg, white, rgba(255, 255, 255, 0) 50%),linear-gradient(0deg, black, rgba(0, 0, 0, 0) 50%),linear-gradient(90deg, #808080, rgba(128, 128, 128, 0))}.picker_alpha,.picker_sample{position:relative;background:linear-gradient(45deg, lightgrey 25%, transparent 25%, transparent 75%, lightgrey 75%) 0 0/2em 2em,linear-gradient(45deg, lightgrey 25%, white 25%, white 75%, lightgrey 75%) 1em 1em/2em 2em;box-shadow:0 0 0 1px silver}.picker_alpha .picker_selector,.picker_sample .picker_selector{background:none}.picker_editor input{font-family:monospace;padding:.2em .4em}.picker_sample::before{content:"";position:absolute;display:block;width:100%;height:100%;background:currentColor}.picker_arrow{position:absolute;z-index:-1}.picker_wrapper.popup{position:absolute;z-index:2;margin:1.5em}.picker_wrapper.popup,.picker_wrapper.popup .picker_arrow::before,.picker_wrapper.popup .picker_arrow::after{background:#f2f2f2;box-shadow:0 0 10px 1px rgba(0,0,0,.4)}.picker_wrapper.popup .picker_arrow{width:3em;height:3em;margin:0}.picker_wrapper.popup .picker_arrow::before,.picker_wrapper.popup .picker_arrow::after{content:"";display:block;position:absolute;top:0;left:0;z-index:-99}.picker_wrapper.popup .picker_arrow::before{width:100%;height:100%;-webkit-transform:skew(45deg);transform:skew(45deg);-webkit-transform-origin:0 100%;transform-origin:0 100%}.picker_wrapper.popup .picker_arrow::after{width:150%;height:150%;box-shadow:none}.popup.popup_top{bottom:100%;left:0}.popup.popup_top .picker_arrow{bottom:0;left:0;-webkit-transform:rotate(-90deg);transform:rotate(-90deg)}.popup.popup_bottom{top:100%;left:0}.popup.popup_bottom .picker_arrow{top:0;left:0;-webkit-transform:rotate(90deg) scale(1, -1);transform:rotate(90deg) scale(1, -1)}.popup.popup_left{top:0;right:100%}.popup.popup_left .picker_arrow{top:0;right:0;-webkit-transform:scale(-1, 1);transform:scale(-1, 1)}.popup.popup_right{top:0;left:100%}.popup.popup_right .picker_arrow{top:0;left:0}';
+    document.documentElement.firstElementChild.appendChild(style);
+
+    Picker.StyleElement = style;
+}
+
+function getChrColor$1(chr) {
+    if (chrColorMap$1[chr]) {
+        return chrColorMap$1[chr];
+    } else if (chrColorMap$1["chr" + chr]) {
+        const color = chrColorMap$1["chr" + chr];
+        chrColorMap$1[chr] = color;
+        return color;
+    } else {
+        const color = randomRGB();
+        chrColorMap$1[chr] = color;
+        return color;
+    }
+}
+
+function randomRGB (min, max) {
+
+    var r = Math.round(Math.random() * 255).toString(10);
+    var g = Math.round(Math.random() * 255).toString(10);
+    var b = Math.round(Math.random() * 255).toString(10);
+    return "rgb(" + r + "," + g + "," + b + ")";
+}
+
+const chrColorMap$1 = {
+    "chrX": "rgb(204, 153, 0)",
+    "chrY": "rgb(153, 204, 0",
+    "chrUn": "rgb(50, 50, 50)",
+    "chr1": "rgb(80, 80, 255)",
+    "chrI": "rgb(139, 155, 187)",
+    "chr2": "rgb(206, 61, 50)",
+    "chrII": "rgb(206, 61, 50)",
+    "chr2a": "rgb(216, 71, 60)",
+    "chr2b": "rgb(226, 81, 70)",
+    "chr3": "rgb(116, 155, 88)",
+    "chrIII": "rgb(116, 155, 88)",
+    "chr4": "rgb(240, 230, 133)",
+    "chrIV": "rgb(240, 230, 133)",
+    "chr5": "rgb(70, 105, 131)",
+    "chr6": "rgb(186, 99, 56)",
+    "chr7": "rgb(93, 177, 221)",
+    "chr8": "rgb(128, 34, 104)",
+    "chr9": "rgb(107, 215, 107)",
+    "chr10": "rgb(213, 149, 167)",
+    "chr11": "rgb(146, 72, 34)",
+    "chr12": "rgb(131, 123, 141)",
+    "chr13": "rgb(199, 81, 39)",
+    "chr14": "rgb(213, 143, 92)",
+    "chr15": "rgb(122, 101, 165)",
+    "chr16": "rgb(228, 175, 105)",
+    "chr17": "rgb(59, 27, 83)",
+    "chr18": "rgb(205, 222, 183)",
+    "chr19": "rgb(97, 42, 121)",
+    "chr20": "rgb(174, 31, 99)",
+    "chr21": "rgb(231, 199, 111)",
+    "chr22": "rgb(90, 101, 94)",
+    "chr23": "rgb(204, 153, 0)",
+    "chr24": "rgb(153, 204, 0)",
+    "chr25": "rgb(51, 204, 0)",
+    "chr26": "rgb(0, 204, 51)",
+    "chr27": "rgb(0, 204, 153)",
+    "chr28": "rgb(0, 153, 204)",
+    "chr29": "rgb(10, 71, 255)",
+    "chr30": "rgb(71, 117, 255)",
+    "chr31": "rgb(255, 194, 10)",
+    "chr32": "rgb(255, 209, 71)",
+    "chr33": "rgb(153, 0, 51)",
+    "chr34": "rgb(153, 26, 0)",
+    "chr35": "rgb(153, 102, 0)",
+    "chr36": "rgb(128, 153, 0)",
+    "chr37": "rgb(51, 153, 0)",
+    "chr38": "rgb(0, 153, 26)",
+    "chr39": "rgb(0, 153, 102)",
+    "chr40": "rgb(0, 128, 153)",
+    "chr41": "rgb(0, 51, 153)",
+    "chr42": "rgb(26, 0, 153)",
+    "chr43": "rgb(102, 0, 153)",
+    "chr44": "rgb(153, 0, 128)",
+    "chr45": "rgb(214, 0, 71)",
+    "chr46": "rgb(255, 20, 99)",
+    "chr47": "rgb(0, 214, 143)",
+    "chr48": "rgb(20, 255, 177)",
+};
+
+class ChordSetManager {
+
+    constructor(config) {
+        this.tracks = [];
+        this.chordSets = [];
+    }
+
+    addChordSet(chordSet) {
+
+        // If a chord set with this name exists replace it (same track, same region)
+        this.chordSets = this.chordSets.filter(g => g.name !== chordSet.name);
+        this.chordSets.push(chordSet);
+
+        let track = this.tracks.find(t => chordSet.trackName === t.name);
+        if (track) {
+            track.chordSets = track.chordSets.filter(cs => cs.name !== chordSet.name);
+            track.chordSets.push(chordSet);
+        }
+        if (!track) {
+            track = new IGVTrack(chordSet);
+            this.tracks.push(track);
+        }
+    }
+
+    clearChords() {
+        this.tracks = [];
+        this.chordSets = [];
+    }
+
+    getTrack(name) {
+        return this.tracks.find(t => name === t.name)
+    }
+
+    getChordSet(name) {
+        return this.chordSets.find(cs => name === cs.name)
+    }
+
+}
+
+class IGVTrack {
+    constructor(chordSet) {
+        this.name = chordSet.trackName;
+        this.color = chordSet.trackColor;
+        this.visible = true;
+        this.chordSets = [chordSet];
+        this.id = guid$1();
+    }
+
+    get chords() {
+        if (this.chordSets.length === 1) {
+            return this.chordSets[0].chords
+        }
+        const chords = [];
+        for (let cs of this.chordSets) {
+            for (let c of cs.chords) {
+                chords.push(c);
+            }
+        }
+        return chords
+    }
+}
+
+
+function guid$1() {
+    return ("0000" + (Math.random() * Math.pow(36, 4) << 0).toString(36)).slice(-4)
+}
+
+const EXP5 = Math.exp(5);
+
+class CircularView {
+
+    static isInstalled() {
+        return window["JBrowseReactCircularGenomeView"] !== undefined && window["React"] !== undefined && window["ReactDOM"] !== undefined
+    }
+
+    /**
+     * Create a new CircularView
+     *
+     * @param parent
+     * @param config - configuration options
+     *   {
+     *       assembly: {name: string, id: string, chromosomes: [{name: string, bpLength: integer, color: string}]
+     *       onChordClick: function called upon chord click with chord feature as argument
+     *   }
+     */
+    constructor(parent, config) {
+
+        config = config || {};
+        this.config = config;
+
+        if (CircularView.isInstalled()) {
+
+            this.parent = parent;
+            this.groupByTrack = config.groupByTrack === true;
+            this.chordManager = new ChordSetManager(config);
+
+            // wrapper for toolbar and circular-view container
+            const wrapper = document.createElement('div');
+            wrapper.className = 'igv-circview-container';
+            parent.appendChild(wrapper);
+
+            // toolbar
+            this.createControls(wrapper);
+            this.resetControlPanel();
+
+            // circular view container
+            const element = document.createElement('div');
+            element.className = 'igv-circview-circular-genome-view';
+            wrapper.appendChild(element);
+            this.container = element;
+
+            if (config.assembly) {
+                this.setAssembly(config.assembly);
+            }
+
+            this.width = config.width || 500;
+            this.height = config.height || 500;
+            this.setSize(this.width, this.height);
+
+        } else {
+            console.error("JBrowse circular view is not installed");
+        }
+    }
+
+    createControls(parent) {
+
+        // toolbar
+        const toolbarDiv = document.createElement('div');
+        toolbarDiv.className = 'igv-circview-toolbar';
+        parent.appendChild(toolbarDiv);
+        this.toolbar = toolbarDiv;
+
+        // control panel
+        const controlPanelDiv = document.createElement('div');
+        controlPanelDiv.className = 'igv-circview-track-panel';
+        parent.appendChild(controlPanelDiv);
+        this.controlPanel = controlPanelDiv;
+        this.controlPanel.style.display = 'none';
+
+
+        // toolbar button container - Track Options - Clear All
+        const buttonContainer = document.createElement('div');
+        buttonContainer.className = 'igv-circview-toolbar-button-container';
+        this.toolbar.appendChild(buttonContainer);
+
+        // Show Controls
+        this.showControlsButton = document.createElement('div');
+        this.showControlsButton.className = 'igv-circview-button';
+        buttonContainer.appendChild(this.showControlsButton);
+        this.showControlsButton.innerText = 'none' === this.controlPanel.style.display ? 'Show Controls' : 'Hide Controls';
+        this.showControlsButton.addEventListener('click', (event) => {
+            const panelRows = this.controlPanel.querySelectorAll('div');
+            if (panelRows.length > 0) {
+                if ('none' === this.controlPanel.style.display) {
+                    this.controlPanel.style.display = 'flex';
+                    event.target.innerText = 'Hide Controls';
+                } else {
+                    this.controlPanel.style.display = 'none';
+                    event.target.innerText = 'Show Controls';
+                }
+            }
+        });
+
+        // Clear All
+        let button = document.createElement('div');
+        button.className = 'igv-circview-button';
+        buttonContainer.appendChild(button);
+        button.innerText = 'Clear All';
+        button.addEventListener('click', () => {
+            this.clearChords();
+        });
+
+        // Close
+        if (false !== this.config.showCloseButton) {
+            button = document.createElement('div');
+            button.className = 'igv-circview-button';
+            buttonContainer.appendChild(button);
+            button.innerText = 'Close';
+            button.addEventListener('click', () => {
+                this.visible = false;
+            });
+        }
+    }
+
+    resetControlPanel() {
+        this.controlPanel.innerHTML = '';
+        this.controlPanel.appendChild(this.createGroupByCB());
+        const chordSets = this.groupByTrack ? this.chordManager.tracks : this.chordManager.chordSets;
+        for(let cs of chordSets) {
+            this.addToControlPanel(cs);
+        }
+    }
+
+    createGroupByCB() {
+        const groupByCB = document.createElement('input');
+        groupByCB.type = 'checkbox';
+        groupByCB.id = 'groupByCB';
+        groupByCB.style.width = '1.4em';
+        groupByCB.style.height = '1.4em';
+        groupByCB.checked = this.groupByTrack;
+
+        groupByCB.onclick = (evt) => {
+            this.groupByTrack = evt.target.checked;
+            this.resetControlPanel();
+            this.render();
+        };
+
+        const groupByLabel = document.createElement('label');
+        groupByLabel.for = 'groupByCB';
+        groupByLabel.innerText = 'Group by track';
+        groupByLabel.style.color = 'black';
+        groupByLabel.style.paddingLeft = '10px';
+        const trackPanelRow = document.createElement('div');
+        trackPanelRow.style.width = '100%';
+        trackPanelRow.style.paddingTop = '5px';
+        trackPanelRow.style.paddingBottom = '5px';
+        trackPanelRow.style.background = 'rgb(216, 230, 234)';
+        trackPanelRow.appendChild(groupByCB);
+        trackPanelRow.appendChild(groupByLabel);
+        return trackPanelRow
+    }
+
+    addToControlPanel(chordSet) {
+
+        // single track row - container for hide-button | color-picker-swatch | track-name
+        const row = document.createElement('div');
+        this.controlPanel.appendChild(row);
+
+
+        // track hide|show
+        const hideShowButton = document.createElement('div');
+        hideShowButton.className = 'igv-circview-button';
+        row.appendChild(hideShowButton);
+        hideShowButton.innerText = true === chordSet.visible ? 'Hide' : 'Show';
+        hideShowButton.addEventListener('click', event => {
+            if (true === chordSet.visible) {
+                this.hideChordSet(chordSet.name);
+                event.target.innerText = "Show";
+            } else {
+                this.showChordSet(chordSet.name);
+                event.target.innerText = "Hide";
+            }
+        });
+
+        // The alpha range slider.  Create this here so we can reference it from the color picker
+        const alphaSlider = document.createElement('input');
+        const valueToAlpha = (value) => Math.exp(value / 200) / EXP5;
+        const alphaToValue = (alpha) => 200 * Math.log(alpha * EXP5);
+
+        // color
+        const colorPickerButton = document.createElement('div');
+        colorPickerButton.className = 'igv-circview-button';
+        colorPickerButton.innerHTML = '&nbsp;&nbsp;&nbsp;&nbsp;';   // <- important for button to size properly
+        row.appendChild(colorPickerButton);
+        colorPickerButton.style.backgroundColor = setAlpha(chordSet.color, 1);
+        const pickerConfig =
+            {
+                parent: colorPickerButton,
+                popup: 'right',
+                editorFormat: 'rgb',
+                color: chordSet.color,
+                onChange: ({rgbaString}) => {
+                    colorPickerButton.style.backgroundColor = setAlpha(rgbaString, 1);
+                    this.setColor(chordSet.name, rgbaString);
+                    alphaSlider.value = alphaToValue(getAlpha(chordSet.color));
+                }
+            };
+        const picker = new Picker(pickerConfig);
+
+        // alpha transparency
+        alphaSlider.setAttribute('title', 'Adjust transparency of arcs');
+        alphaSlider.type = 'range';
+        //alphaSlider.className = 'igv-circview-alpha-slider'
+        alphaSlider.style.width = '100px';
+        alphaSlider.style.marginRight = '10px';
+        alphaSlider.setAttribute('class', 'range');
+        alphaSlider.setAttribute('min', '0');
+        alphaSlider.setAttribute('max', '1000');
+        alphaSlider.value = alphaToValue(getAlpha(chordSet.color));
+        alphaSlider.oninput = () => {
+            const v = valueToAlpha(alphaSlider.value);
+            this.setColor(chordSet.name, setAlpha(chordSet.color, v));
+            picker.setColor(chordSet.color);
+        };
+        row.appendChild(alphaSlider);
+
+        // track name
+        const trackNameDive = document.createElement('div');
+        trackNameDive.style.color = 'black';
+        row.appendChild(trackNameDive);
+        trackNameDive.innerText = trackNameDive.title = chordSet.name;
+
+    }
+
+    /**
+     * Reset view with a new set of chromosomes.
+     *
+     * @param igvGenome {name: string, id: string, chromosomes: [{name: string, bpLength: integer, color: string}
+     */
+    setAssembly(igvGenome) {
+
+        const id = this.genomeId || guid();
+
+        if (this.genomeId === id) {
+            return
+        }
+        this.chordManager.clearChords();
+        this.genomeId = id;
+        this.chrNames = new Set(igvGenome.chromosomes.map(chr => shortChrName$1(chr.name)));
+
+        const regions = [];
+        const colors = [];
+        for (let chr of igvGenome.chromosomes) {
+            const shortName = shortChrName$1(chr.name);
+            colors.push(chr.color || getChrColor$1(shortName));
+            regions.push(
+                {
+                    refName: shortName,
+                    uniqueId: shortName,
+                    start: 0,
+                    end: chr.bpLength
+                }
+            );
+        }
+
+        this.assembly = {
+            name: igvGenome.name,
+            sequence: {
+                trackId: id,
+                type: 'ReferenceSequenceTrack',
+                adapter: {
+                    type: 'FromConfigSequenceAdapter',
+                    features: regions,
+                },
+            },
+            refNameColors: colors
+        };
+
+        this.render();
+
+    }
+
+    /**
+     * Append or replace current set of chords to the global set or a specific track.
+     *
+     * @param newChords array of chord feature objects.  Example:
+     * [
+     *   {
+     *     "uniqueId": "chr1:129763372-129763376_chr1:129806775-129806790",
+     *     "color": "rgba(0, 0, 255, 0.1)",
+     *     "refName": "1",
+     *     "start": 129763372,
+     *     "end": 129763376,
+     *     "mate": {
+     *       "refName": "2",
+     *       "start": 129806775,
+     *       "end": 129806790
+     *     }
+     *   }
+     * ]
+     * @param options {
+     *     name: string,    // Track name
+     *     color: string,   // Track color
+     *     append: boolean  // Replace or append chords to current set.  Default is append (true)
+     * }
+     */
+
+    addChords(newChords, options = {}) {
+
+        const tmp = options.name || options.track || "*";
+        const trackName = tmp.split(' ')[0].replaceAll("%20", " ");
+        const chordSetName = tmp.replaceAll("%20", " ");
+
+        const chordSet =  {
+            name: chordSetName,
+            trackName: trackName,
+            chords: newChords,
+            color: options.color || "black",
+            trackColor: options.trackColor || options.color || "black",
+            visible: true,
+            id: options.id || guid()
+        };
+
+        this.chordManager.addChordSet(chordSet);
+
+        this.resetControlPanel();
+
+        this.render();
+    }
+
+    /**
+     * Set the nominal size of the view in pixels.  Size is reduced some aribtrary amount to account for borders and margins
+     */
+    setSize(width, height) {
+
+        height = height || width;
+
+        this.width = width;
+        this.height = height;
+        if (this.viewState) {
+            const view = this.viewState.session.view;
+            view.setWidth(width);
+            view.setHeight(height /* this is the height of the area inside the border in pixels */);
+            view.setBpPerPx(view.minBpPerPx);
+        }
+    }
+
+    getSize() {
+        return Math.min(this.width, this.height)
+    }
+
+    clearChords() {
+        //this.tracks = []
+        this.chordManager.clearChords();
+        this.resetControlPanel();
+        this.render();
+    }
+
+    clearSelection() {
+        this.viewState.pluginManager.rootModel.session.clearSelection();
+    }
+
+    /**
+     * Deprecated, use "visible" property
+     */
+    show() {
+        this.parent.style.display = 'block';
+    }
+
+    /**
+     * Deprecated, use "visible" property
+     */
+    hide() {
+        this.parent.style.display = 'none';
+    }
+
+    get visible() {
+        return this.parent.style.display !== 'none'
+    }
+
+    set visible(isVisible) {
+        this.parent.style.display = isVisible ? 'block' : 'none';
+    }
+
+    hideChordSet(trackName) {
+        let cs = this.getChordSet(trackName);
+        if (cs) {
+            cs.visible = false;
+            this.render();
+        } else {
+            console.warn(`No track with name: ${name}`);
+        }
+    }
+
+    showChordSet(name) {
+        let cs = this.getChordSet(name);
+        if (cs) {
+            cs.visible = true;
+            this.render();
+        } else {
+            console.warn(`No track with name: ${name}`);
+        }
+    }
+
+    // showTrack(trackID) {
+    //     let idx = this.tracks.findIndex(t => trackID === t.id)
+    //     if (idx >= 0) {
+    //         const track = this.tracks[idx]
+    //         track.visible = true
+    //         this.tracks.splice(idx, 1)   // Change z-order
+    //         this.tracks.push(track)
+    //         this.render()
+    //     } else {
+    //         console.warn(`No track with name: ${name}`)
+    //     }
+    // }
+
+    // TODO -- remove corresponding row from track panel
+    deleteTrack(trackID) {
+        let idx = this.tracks.findIndex(t => trackID === t.name);
+        if (idx >= 0) {
+            this.tracks.splice(idx, 1);
+        }
+        this.render();
+    }
+
+    getChordSet(name) {
+        return this.groupByTrack ? this.chordManager.getTrack(name) : this.chordManager.getChordSet(name)
+    }
+
+    setColor(name, color) {
+        const t = this.getChordSet(name);
+        if (t) {
+            t.color = color;
+            const trackID = t.id;
+            for (let jbrowseTrack of this.viewState.config.tracks) {
+                if (trackID === jbrowseTrack.trackId) {
+                    jbrowseTrack.displays[0].renderer.strokeColor.set(color);
+                    break
+                }
+            }
+        }
+    }
+
+    /**
+     * The main render function.  Render here means build the React DOM.  Trying to change react state dynamically
+     * has been buggy, so we completely rebuild the DOM ("render") on any state change.
+     */
+    render() {
+
+        const {
+            createViewState,
+            JBrowseCircularGenomeView,
+        } = JBrowseReactCircularGenomeView;
+
+        // Remove all children from possible previous renders.  React might do this for us when we render, but just in case.
+        ReactDOM.unmountComponentAtNode(this.container);
+
+        const visibleChordSets =
+            (this.groupByTrack ? this.chordManager.tracks : this.chordManager.chordSets).filter(t => t.visible);
+
+        const jbrowseTracks = [];
+        const colors = [];
+
+        for (let chordSet of visibleChordSets) {
+
+            jbrowseTracks.push({
+                trackId: chordSet.id,
+                name: chordSet.name,
+                assemblyNames: ['forIGV'],
+                type: 'VariantTrack',
+                adapter: {
+                    type: 'FromConfigAdapter',
+                    features: chordSet.chords,
+                }
+            });
+            colors.push(chordSet.color);
+        }
+
+        this.viewState = createViewState({
+            assembly: this.assembly,
+            tracks: jbrowseTracks,
+        });
+
+        // Set view colors
+        for (let i = 0; i < visibleChordSets.length; i++) {
+            this.viewState.config.tracks[i].displays[0].renderer.strokeColor.set(colors[i]);
+            //this.viewState.config.tracks[i].displays[0].renderer.strokeColor.set("jexl:get(feature, 'color') || 'black'");
+            //this.viewState.config.tracks[i].displays[0].renderer.strokeColorSelected.set("jexl:get(feature, 'highlightColor') || 'red'");
+        }
+
+        this.element = React.createElement(JBrowseCircularGenomeView, {viewState: this.viewState});
+        this.setSize(this.width, this.height);
+
+        ReactDOM.render(this.element, this.container);
+
+        const onChordClick = this.config.onChordClick || defaultOnChordClick;
+        for (let i = 0; i < visibleChordSets.length; i++) {
+            this.viewState.session.view.showTrack(this.viewState.config.tracks[i].trackId);
+            if (onChordClick) {
+                this.viewState.pluginManager.jexl.addFunction('onChordClick', onChordClick);
+                this.viewState.config.tracks[i].displays[0].onChordClick.set(
+                    'jexl:onChordClick(feature, track, pluginManager)'
+                );
+            }
+        }
+    }
+}
+
+function setAlpha(rgba, alpha) {
+    const [a, b, c, ignore] = rgba.split(','); // rgba(r g b alpha)
+    return `${a},${b},${c},${alpha})`
+}
+
+function getAlpha(rgba) {
+    if (rgba.startsWith("rgba(")) {
+        return Number(rgba.split(',')[3].replace(')', ''))
+    } else {
+        return 1
+    }
+}
+
+function shortChrName$1(chrName) {
+    return chrName.startsWith("chr") ? chrName.substring(3) : chrName
+}
+
+function defaultOnChordClick(feature, chordTrack, pluginManager) {
+    console.log(feature);
+}
+
+function guid() {
+    return ("0000" + (Math.random() * Math.pow(36, 4) << 0).toString(36)).slice(-4)
+}
+
+function embedCSS$1() {
+
+    const css =  '.igv-circview-container {\n  width: fit-content;\n  height: fit-content;\n  box-sizing: content-box;\n  color: dimgray;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 12px;\n  background-color: white;\n  border-color: dimgray;\n  border-style: solid;\n  border-width: thin;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n}\n\n.igv-circview-toolbar {\n  position: relative;\n  width: 100%;\n  height: 32px;\n  background-color: lightgrey;\n  border-bottom-style: solid;\n  border-bottom-color: dimgray;\n  border-bottom-width: thin;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n}\n\n.igv-circview-toolbar-button-container {\n  height: 100%;\n  width: fit-content;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-circview-toolbar-button-container > div {\n  margin: 4px;\n}\n\n.igv-circview-track-panel {\n  z-index: 1024;\n  position: absolute;\n  top: 33px;\n  left: 0;\n  width: 100%;\n  height: fit-content;\n  border-bottom-style: solid;\n  border-bottom-color: dimgray;\n  border-bottom-width: thin;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n}\n.igv-circview-track-panel > div {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-circview-track-panel > div > div {\n  margin: 4px;\n}\n\n.igv-circview-swatch-button {\n  cursor: pointer;\n  padding: 5px;\n  width: 8px;\n  height: 8px;\n  border: 1px solid #8d8b8b;\n  border-radius: 16px;\n}\n\n.igv-circview-button {\n  cursor: pointer;\n  padding: 5px;\n  color: #444;\n  vertical-align: middle;\n  text-align: center;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 12px;\n  border: 1px solid #8d8b8b;\n  border-radius: 4px;\n  background: #efefef;\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.2);\n}\n\n.igv-circview-button:hover {\n  background: #efefef;\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.6);\n}\n\n.igv-circview-button:active {\n  color: #007bff;\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.6);\n}\n\n/*# sourceMappingURL=circular-view.css.map */\n';
+
+    const style = document.createElement('style');
+    style.setAttribute('type', 'text/css');
+    style.innerHTML = css;
+    document.head.insertBefore(style, document.head.childNodes[ document.head.childNodes.length - 1 ]);
+}
+
+if(typeof document !== 'undefined') {
+
+    if (!stylesheetExists("circular-view.css")) {
+        embedCSS$1();
+    }
+
+    function stylesheetExists(stylesheetName) {
+        for (let ss of document.styleSheets) {
+            ss = ss.href ? ss.href.replace(/^.*[\\\/]/, '') : '';
+            if (ss === stylesheetName) {
+                return true;
+            }
+        }
+        return false;
+    }
+}
+
+/**
+ * The minimum length for a VCF structural variant.  VCF records < this length are ignored in the circular view
+ * @type {number}
+ */
+const MINIMUM_SV_LENGTH = 1000000;
+
+const shortChrName = (chrName) => {
+    return chrName.startsWith("chr") ? chrName.substring(3) : chrName
+};
+
+const makePairedAlignmentChords = (alignments) => {
+
+    const chords = [];
+    for (let a of alignments) {
+
+        if(a.paired) {
+            if(a.firstAlignment && a.secondAlignment) {
+                chords.push({
+                    uniqueId: a.readName,
+                    refName: shortChrName(a.firstAlignment.chr),
+                    start: a.firstAlignment.start,
+                    end: a.firstAlignment.end,
+                    mate: {
+                        refName: shortChrName(a.secondAlignment.chr),
+                        start: a.secondAlignment.start,
+                        end: a.secondAlignment.end,
+                    }
+                });
+            }
+        }
+        else {
+            const mate = a.mate;
+            if (mate && mate.chr && mate.position) {
+                chords.push({
+                    uniqueId: a.readName,
+                    refName: shortChrName(a.chr),
+                    start: a.start,
+                    end: a.end,
+                    mate: {
+                        refName: shortChrName(mate.chr),
+                        start: mate.position - 1,
+                        end: mate.position,
+                    }
+                });
+            }
+        }
+    }
+    return chords
+};
+
+const makeSupplementalAlignmentChords = (alignments) => {
+
+    const makeChords = (a) => {
+        const sa = a.tags()['SA'];
+        const supAl = createSupplementaryAlignments(sa);
+        let n = 0;
+        for (let s of supAl) {
+            if (s.start !== a.start) {
+                chords.push({
+                    uniqueId: `${a.readName}_${n++}`,
+                    refName: shortChrName(a.chr),
+                    start: a.start,
+                    end: a.end,
+                    mate: {
+                        refName: shortChrName(s.chr),
+                        start: s.start,
+                        end: s.start + s.lenOnRef
+                    }
+                });
+            }
+        }
+    };
+
+    const chords = [];
+    for (let a of alignments) {
+        if(a.paired) {
+            makeChords(a.firstAlignment);
+            if(a.secondAlignment) {
+                makeChords(a.secondAlignment);
+            }
+        } else {
+            makeChords(a);
+        }
+    }
+    return chords
+};
+
+const makeBedPEChords = (features) => {
+
+    return features.map(v => {
+
+        // If v is a whole-genome feature, get the true underlying variant.
+        const f = v._f || v;
+
+        return {
+            uniqueId: `${f.chr1}:${f.start1}-${f.end1}_${f.chr2}:${f.start2}-${f.end2}`,
+            refName: shortChrName(f.chr1),
+            start: f.start1,
+            end: f.end1,
+            mate: {
+                refName: shortChrName(f.chr2),
+                start: f.start2,
+                end: f.end2,
+            }
+        }
+    })
+};
+
+
+const makeVCFChords = (features) => {
+
+    const svFeatures = features.filter(v => {
+        const f = v._f || v;
+        const isLargeEnough = f.info && f.info.CHR2 && f.info.END &&
+            (f.info.CHR2 !== f.chr || Math.abs(Number.parseInt(f.info.END) - f.pos) > MINIMUM_SV_LENGTH);
+        return isLargeEnough
+    });
+    return svFeatures.map(v => {
+
+        // If v is a whole-genome feature, get the true underlying variant.
+        const f = v._f || v;
+
+        const pos2 = Number.parseInt(f.info.END);
+        const start2 = pos2 - 100;
+        const end2 = pos2 + 100;
+
+        return {
+            uniqueId: `${f.chr}:${f.start}-${f.end}_${f.info.CHR2}:${f.info.END}`,
+            refName: shortChrName(f.chr),
+            start: f.start,
+            end: f.end,
+            mate: {
+                refName: shortChrName(f.info.CHR2),
+                start: start2,
+                end: end2
+            }
+        }
+    })
+};
+
+function makeCircViewChromosomes(genome) {
+    const regions = [];
+    const colors = [];
+    for (let chrName of genome.wgChromosomeNames) {
+        const chr = genome.getChromosome(chrName);
+        colors.push(getChrColor(chr.name));
+        regions.push(
+            {
+                name: chr.name,
+                bpLength: chr.bpLength
+            }
+        );
+    }
+    return regions
+}
+
+function sendChords(chords, track, refFrame, alpha) {
+
+    const baseColor =  track.color || 'rgb(0,0,255)';
+
+    const chordSetColor = IGVColor.addAlpha("all" === refFrame.chr ? baseColor : getChrColor(refFrame.chr), alpha);
+    const trackColor = IGVColor.addAlpha(baseColor, alpha);
+
+    // name the chord set to include locus and filtering information
+    const encodedName = track.name.replaceAll(' ', '%20');
+    const chordSetName = "all" === refFrame.chr ? encodedName :
+        `${encodedName}  ${refFrame.chr}:${refFrame.start}-${refFrame.end}`;
+    track.browser.circularView.addChords(chords, {track: chordSetName, color: chordSetColor, trackColor: trackColor});
+
+    // show circular view if hidden
+    if(!track.browser.circularViewVisible) track.browser.circularViewVisible = true;
+
+}
+
+
+function createCircularView(el, browser) {
+
+    const circularView = new CircularView(el, {
+
+        onChordClick: (feature, chordTrack, pluginManager) => {
+
+            const f1 = feature.data;
+            const f2 = f1.mate;
+            addFrameForFeature(f1);
+            addFrameForFeature(f2);
+
+            function addFrameForFeature(feature) {
+
+                feature.chr = browser.genome.getChromosomeName(feature.refName);
+                let frameFound = false;
+                for (let referenceFrame of browser.referenceFrameList) {
+                    const l = Locus.fromLocusString(referenceFrame.getLocusString());
+                    if (l.contains(feature)) {
+                        frameFound = true;
+                        break
+                    } else if (l.overlaps(feature)) {
+                        referenceFrame.extend(feature);
+                        frameFound = true;
+                        break
+                    }
+                }
+                if (!frameFound) {
+                    const flanking = 2000;
+                    const center = (feature.start + feature.end) / 2;
+                    browser.addMultiLocusPanel(feature.chr, center - flanking, center + flanking);
+
+                }
+            }
+        }
+    });
+
+    return circularView
+}
+
+class PairedEndStats {
+
+    constructor(alignments, {minTLENPercentile, maxTLENPercentile}) {
+        this.totalCount = 0;
+        this.frCount = 0;
+        this.rfCount = 0;
+        this.ffCount = 0;
+        this.sumF = 0;
+        this.sumF2 = 0;
+        this.lp = minTLENPercentile === undefined ? 0.1 : minTLENPercentile;
+        this.up = maxTLENPercentile === undefined ? 99.5 : maxTLENPercentile;
+        this.isizes = [];
+        this.compute(alignments);
+    }
+
+    compute(alignments) {
+
+        for (let alignment of alignments) {
+            if (alignment.isProperPair()) {
+                var tlen = Math.abs(alignment.fragmentLength);
+                this.sumF += tlen;
+                this.sumF2 += tlen * tlen;
+                this.isizes.push(tlen);
+
+                var po = alignment.pairOrientation;
+
+                if (typeof po === "string" && po.length === 4) {
+                    var tmp = '' + po.charAt(0) + po.charAt(2);
+                    switch (tmp) {
+                        case 'FF':
+                        case 'RR':
+                            this.ffCount++;
+                            break
+                        case "FR":
+                            this.frCount++;
+                            break
+                        case"RF":
+                            this.rfCount++;
+                    }
+                }
+                this.totalCount++;
+            }
+        }
+
+        if (this.ffCount / this.totalCount > 0.9) this.orienation = "ff";
+        else if (this.frCount / this.totalCount > 0.9) this.orienation = "fr";
+        else if (this.rfCount / this.totalCount > 0.9) this.orienation = "rf";
+
+        this.minTLEN = this.lp === 0 ? 0 : percentile(this.isizes, this.lp);
+        this.maxTLEN = percentile(this.isizes, this.up);
+
+        // var fMean = this.sumF / this.totalCount
+        // var stdDev = Math.sqrt((this.totalCount * this.sumF2 - this.sumF * this.sumF) / (this.totalCount * this.totalCount))
+        // this.minTLEN = fMean - 3 * stdDev
+        // this.maxTLEN = fMean + 3 * stdDev
+
+    }
+}
+
+function percentile(array, p) {
+
+    if (array.length === 0) return undefined
+    var k = Math.floor(array.length * (p / 100));
+    array.sort(function (a, b) {
+        return a - b
+    });
+    return array[k]
+
+}
+
+const GtexUtils = {
+
+    getTissueInfo: function (datasetId, baseURL) {
+        datasetId = datasetId || 'gtex_v8';
+        baseURL = baseURL || 'https://gtexportal.org/rest/v1';
+        let url = baseURL + '/dataset/tissueInfo?datasetId=' + datasetId;
+        return igvxhr.loadJson(url, {})
+    },
+
+    //https://gtexportal.org/rest/v1/association/singleTissueEqtlByLocation?chromosome=7&start=98358766&end=101523798&tissueName=Liver&datasetId=gtex_v7
+    //https://gtexportal.org/rest/v1/association/singleTissueEqtlByLocation?chromosome=7&start=98358766&end=101523798&tissueSiteDetailId=Liver&datasetId=gtex_v8
+    trackConfiguration: function (tissueSummary, baseURL) {
+        baseURL = baseURL || 'https://gtexportal.org/rest/v1';
+        return {
+            type: "eqtl",
+            sourceType: "gtex-ws",
+            url: baseURL + '/association/singleTissueEqtlByLocation',
+            tissueSiteDetailId: tissueSummary.tissueSiteDetailId,
+            name: (tissueSummary.tissueSiteDetailId.split('_').join(' ')),
+            visibilityWindow: 250000
+        }
+    }
+};
+
+/**
+ * @param feature
+ * @param bpStart  genomic location of the left edge of the current canvas
+ * @param xScale  scale in base-pairs per pixel
+ * @returns {{px: number, px1: number, pw: number, h: number, py: number}}
+ */
+function calculateFeatureCoordinates(feature, bpStart, xScale) {
+    let px = (feature.start - bpStart) / xScale;
+    let px1 = (feature.end - bpStart) / xScale;
+    //px = Math.round((feature.start - bpStart) / xScale),
+    //px1 = Math.round((feature.end - bpStart) / xScale),
+    let pw = px1 - px;
+
+    if (pw < 3) {
+        pw = 3;
+        px -= 1.5;
+    }
+
+    return {
+        px: px,
+        px1: px1,
+        pw: pw
+    }
+}
+
+/**
+ *
+ * @param feature
+ * @param bpStart  genomic location of the left edge of the current canvas
+ * @param xScale  scale in base-pairs per pixel
+ * @param pixelHeight  pixel height of the current canvas
+ * @param ctx  the canvas 2d context
+ * @param options  genomic state
+ */
+function renderFeature(feature, bpStart, xScale, pixelHeight, ctx, options) {
+
+    try {
+        ctx.save();
+
+        // Set ctx color to a known valid color.  If getColorForFeature returns an invalid color string it is ignored, and
+        // this default will be used.
+        ctx.fillStyle = this.color;
+        ctx.strokeStyle = this.color;
+
+        const color = this.getColorForFeature(feature);
+        ctx.fillStyle = color;
+        ctx.strokeStyle = color;
+
+        let h;
+        let py;
+        if (this.displayMode === "SQUISHED" && feature.row !== undefined) {
+            h = this.featureHeight / 2;
+            py = this.margin + this.squishedRowHeight * feature.row;
+        } else if (this.displayMode === "EXPANDED" && feature.row !== undefined) {
+            h = this.featureHeight;
+            py = this.margin + this.expandedRowHeight * feature.row;
+        } else {  // collapsed
+            h = this.featureHeight;
+            py = this.margin;
+        }
+
+        const pixelWidth = options.pixelWidth;   // typical 3*viewportWidth
+
+        const cy = py + h / 2;
+        const h2 = h / 2;
+        const py2 = cy - h2 / 2;
+
+        const exonCount = feature.exons ? feature.exons.length : 0;
+        const coord = calculateFeatureCoordinates(feature, bpStart, xScale);
+        const step = this.arrowSpacing;
+        const direction = feature.strand === '+' ? 1 : feature.strand === '-' ? -1 : 0;
+
+        if (exonCount === 0) {
+            // single-exon transcript
+            const xLeft = Math.max(0, coord.px);
+            const xRight = Math.min(pixelWidth, coord.px1);
+            const width = xRight - xLeft;
+            ctx.fillRect(xLeft, py, width, h);
+
+            // Arrows
+            // Do not draw if strand is not +/-
+            if (direction !== 0) {
+                ctx.fillStyle = "white";
+                ctx.strokeStyle = "white";
+                for (let x = xLeft + step / 2; x < xRight; x += step) {
+                    // draw arrowheads along central line indicating transcribed orientation
+                    IGVGraphics.strokeLine(ctx, x - direction * 2, cy - 2, x, cy);
+                    IGVGraphics.strokeLine(ctx, x - direction * 2, cy + 2, x, cy);
+                }
+                ctx.fillStyle = color;
+                ctx.strokeStyle = color;
+            }
+        } else {
+            // multi-exon transcript
+            IGVGraphics.strokeLine(ctx, coord.px + 1, cy, coord.px1 - 1, cy); // center line for introns
+
+
+            const xLeft = Math.max(0, coord.px) + step / 2;
+            const xRight = Math.min(pixelWidth, coord.px1);
+            for (let x = xLeft; x < xRight; x += step) {
+                // draw arrowheads along central line indicating transcribed orientation
+                IGVGraphics.strokeLine(ctx, x - direction * 2, cy - 2, x, cy);
+                IGVGraphics.strokeLine(ctx, x - direction * 2, cy + 2, x, cy);
+            }
+            for (let e = 0; e < exonCount; e++) {
+                // draw the exons
+                const exon = feature.exons[e];
+                let ePx = Math.round((exon.start - bpStart) / xScale);
+                let ePx1 = Math.round((exon.end - bpStart) / xScale);
+                let ePw = Math.max(1, ePx1 - ePx);
+                let ePxU;
+
+                if (ePx + ePw < 0) {
+                    continue  // Off the left edge
+                }
+                if (ePx > pixelWidth) {
+                    break // Off the right edge
+                }
+
+                if (exon.utr) {
+                    ctx.fillRect(ePx, py2, ePw, h2); // Entire exon is UTR
+                } else {
+                    if (exon.cdStart) {
+                        ePxU = Math.round((exon.cdStart - bpStart) / xScale);
+                        ctx.fillRect(ePx, py2, ePxU - ePx, h2); // start is UTR
+                        ePw -= (ePxU - ePx);
+                        ePx = ePxU;
+
+                    }
+                    if (exon.cdEnd) {
+                        ePxU = Math.round((exon.cdEnd - bpStart) / xScale);
+                        ctx.fillRect(ePxU, py2, ePx1 - ePxU, h2); // start is UTR
+                        ePw -= (ePx1 - ePxU);
+                        ePx1 = ePxU;
+                    }
+
+                    ePw = Math.max(ePw, 1);
+                    ctx.fillRect(ePx, py, ePw, h);
+
+                    // Arrows
+                    if (ePw > step + 5 && direction !== 0) {
+                        ctx.fillStyle = "white";
+                        ctx.strokeStyle = "white";
+                        for (let x = ePx + step / 2; x < ePx1; x += step) {
+                            // draw arrowheads along central line indicating transcribed orientation
+                            IGVGraphics.strokeLine(ctx, x - direction * 2, cy - 2, x, cy);
+                            IGVGraphics.strokeLine(ctx, x - direction * 2, cy + 2, x, cy);
+                        }
+                        ctx.fillStyle = color;
+                        ctx.strokeStyle = color;
+
+                    }
+                }
+            }
+        }
+
+        if (options.drawLabel && this.displayMode !== "SQUISHED") {
+            renderFeatureLabel.call(this, ctx, feature, coord.px, coord.px1, py, options.referenceFrame, options);
+        }
+    } finally {
+        ctx.restore();
+    }
+}
+
+/**
+ * @param ctx       the canvas 2d context
+ * @param feature
+ * @param featureX  feature start in pixel coordinates
+ * @param featureX1 feature end in pixel coordinates
+ * @param featureY  feature y-coordinate
+ * @param windowX   visible window start x-coordinate
+ * @param windowX1  visible window end x-coordinate
+ * @param referenceFrame  genomic state
+ * @param options  options
+ */
+function renderFeatureLabel(ctx, feature, featureX, featureX1, featureY, referenceFrame, options) {
+
+    try {
+        ctx.save();
+
+        let name = feature.name;
+        if (name === undefined && feature.gene) name = feature.gene.name;
+        if (name === undefined) name = feature.id || feature.ID;
+        if (!name || name === '.') return
+
+
+        let pixelXOffset = options.pixelXOffset || 0;
+        const t1 = Math.max(featureX, -pixelXOffset);
+        const t2 = Math.min(featureX1, -pixelXOffset + options.viewportWidth);
+        let centerX = (t1 + t2) / 2;
+
+        let transform;
+        if (this.displayMode === "COLLAPSED" && this.labelDisplayMode === "SLANT") {
+            transform = {rotate: {angle: 45}};
+        }
+        const labelY = getFeatureLabelY(featureY, transform);
+
+        let color = this.getColorForFeature(feature);
+        let geneColor;
+        let gtexSelection = false;
+        if (referenceFrame.selection && GtexUtils.gtexLoaded) {
+            // TODO -- for gtex, figure out a better way to do this
+            gtexSelection = true;
+            geneColor = referenceFrame.selection.colorForGene(name);
+        }
+
+        const geneFontStyle = {
+            textAlign: "SLANT" === this.labelDisplayMode ? undefined : 'center',
+            fillStyle: geneColor || color,
+            strokeStyle: geneColor || color
+        };
+
+        const textBox = ctx.measureText(name);
+        const xleft = centerX - textBox.width / 2;
+        const xright = centerX + textBox.width / 2;
+        const lastLabelX = options.rowLastLabelX[feature.row] || -Number.MAX_SAFE_INTEGER;
+        if (options.labelAllFeatures || xleft > lastLabelX || gtexSelection) {
+            options.rowLastLabelX[feature.row] = xright;
+
+            if ('y' === options.axis) {
+                ctx.save();
+                IGVGraphics.labelTransformWithContext(ctx, centerX);
+                IGVGraphics.fillText(ctx, name, centerX, labelY, geneFontStyle, transform);
+                ctx.restore();
+            } else {
+                IGVGraphics.fillText(ctx, name, centerX, labelY, geneFontStyle, transform);
+            }
+        }
+
+    } finally {
+        ctx.restore();
+    }
+}
+
+function getFeatureLabelY(featureY, transform) {
+    return transform ? featureY + 20 : featureY + 25
+}
+
+// SNP constants
+
+const codingNonSynonSet = new Set(['nonsense', 'missense', 'stop-loss', 'frameshift', 'cds-indel']);
+const codingSynonSet = new Set(['coding-synon']);
+const spliceSiteSet = new Set(['splice-3', 'splice-5']);
+const untranslatedSet = new Set(['untranslated-5', 'untranslated-3']);
+
+
+/**
+ * Renderer for a UCSC snp track
+ *
+ * @param snp
+ * @param bpStart  genomic location of the left edge of the current canvas
+ * @param xScale  scale in base-pairs per pixel
+ * @param pixelHeight  pixel height of the current canvas
+ * @param ctx  the canvas 2d context
+ */
+function renderSnp(snp, bpStart, xScale, pixelHeight, ctx) {
+
+    var coord = calculateFeatureCoordinates(snp, bpStart, xScale),
+        py = this.margin,
+        h,
+        colorArrLength = this.snpColors.length,
+        colorPriority;
+
+    h = this.displayMode === "squished" ? this.squishedRowHeight : this.expandedRowHeight;
+
+    switch (this.colorBy) {
+        case 'function':
+            colorPriority = colorByFunc(snp.func);
+            break
+        case 'class':
+            colorPriority = colorByClass(snp['class']);
+    }
+
+    ctx.fillStyle = this.snpColors[colorPriority];
+    ctx.fillRect(coord.px, py, coord.pw, h);
+
+    // Coloring functions, convert a value to a priority
+
+    function colorByFunc(theFunc) {
+        var priorities;
+        var funcArray = theFunc.split(',');
+        // possible func values
+
+
+        priorities = funcArray.map(function (func) {
+            if (codingNonSynonSet.has(func) || spliceSiteSet.has(func)) {
+                return colorArrLength - 1
+            } else if (codingSynonSet.has(func)) {
+                return colorArrLength - 2
+            } else if (untranslatedSet.has(func)) {
+                return colorArrLength - 3
+            } else { // locusSet.has(func) || intronSet.has(func)
+                return 0
+            }
+        });
+
+        return priorities.reduce(function (a, b) {
+            return Math.max(a, b)
+        })
+    }
+
+    function colorByClass(cls) {
+        if (cls === 'deletion') {
+            return colorArrLength - 1
+        } else if (cls === 'mnp') {
+            return colorArrLength - 2
+        } else if (cls === 'microsatellite' || cls === 'named') {
+            return colorArrLength - 3
+        } else { // cls === 'single' || cls === 'in-del' || cls === 'insertion'
+            return 0
+        }
+    }
+}
+
+/**
+ *
+ * @param feature
+ * @param bpStart  genomic location of the left edge of the current canvas
+ * @param xScale  scale in base-pairs per pixel
+ * @param pixelHeight  pixel height of the current canvas
+ * @param ctx  the canvas 2d context
+ */
+function renderFusionJuncSpan(feature, bpStart, xScale, pixelHeight, ctx) {
+
+    const rowHeight = (this.displayMode === "EXPANDED") ? this.expandedRowHeight : this.squishedRowHeight;
+    let py = this.margin;
+    if (this.displayMode !== "COLLAPSED" && feature.row !== undefined) {
+        py += feature.row * rowHeight;
+    }
+
+    const cy = py + 0.5 * rowHeight;
+    const topY = cy - 0.5 * rowHeight;
+    const bottomY = cy + 0.5 * rowHeight;
+
+    // draw the junction arc
+    const junctionLeftPx = Math.round((feature.junction_left - bpStart) / xScale);
+    const junctionRightPx = Math.round((feature.junction_right - bpStart) / xScale);
+
+    ctx.beginPath();
+    ctx.moveTo(junctionLeftPx, cy);
+    ctx.bezierCurveTo(junctionLeftPx, topY, junctionRightPx, topY, junctionRightPx, cy);
+
+    ctx.lineWidth = 1 + Math.log(feature.num_junction_reads) / Math.log(2);
+    ctx.strokeStyle = 'blue';
+    ctx.stroke();
+
+    // draw the spanning arcs
+    const spanningCoords = feature.spanning_frag_coords;
+    for (let i = 0; i < spanningCoords.length; i++) {
+
+        const spanningInfo = spanningCoords[i];
+        const spanLeftPx = Math.round((spanningInfo.left - bpStart) / xScale);
+        const spanRightPx = Math.round((spanningInfo.right - bpStart) / xScale);
+
+        ctx.beginPath();
+        ctx.moveTo(spanLeftPx, cy);
+        ctx.bezierCurveTo(spanLeftPx, bottomY, spanRightPx, bottomY, spanRightPx, cy);
+
+        ctx.lineWidth = 1;
+        ctx.strokeStyle = 'purple';
+        ctx.stroke();
+    }
+}
+
+const DEFAULT_COLOR$2 = 'rgb(0, 0, 150)';
+
+
+class FeatureTrack extends TrackBase {
+
+    static defaults = {
+        type: "annotation",
+        maxRows: 1000, // protects against pathological feature packing cases (# of rows of overlapping feaures)
+        displayMode: "EXPANDED", // COLLAPSED | EXPANDED | SQUISHED
+        margin: 10,
+        featureHeight: 14,
+        autoHeight: false,
+        useScore: false
+    }
+
+
+    constructor(config, browser) {
+        super(config, browser);
+    }
+
+    init(config) {
+        super.init(config);
+
+
+        // Obscure option, not common or supoorted, included for backward compatibility
+        this.labelDisplayMode = config.labelDisplayMode;
+
+        if (config._featureSource) {
+            this.featureSource = config._featureSource;
+            delete config._featureSource;
+        } else {
+            this.featureSource = config.featureSource ?
+                config.featureSource :
+                FeatureSource(config, this.browser.genome);
+        }
+
+        if ("FusionJuncSpan" === config.type) {
+            this.render = config.render || renderFusionJuncSpan;
+            this.squishedRowHeight = config.squishedRowHeight || 50;
+            this.expandedRowHeight = config.expandedRowHeight || 50;
+            this.height = config.height || this.margin + 2 * this.expandedRowHeight;
+        } else if ('snp' === config.type) {
+            this.render = config.render || renderSnp;
+            // colors ordered based on priority least to greatest
+            this.snpColors = ['rgb(0,0,0)', 'rgb(0,0,255)', 'rgb(0,255,0)', 'rgb(255,0,0)'];
+            this.colorBy = 'function';
+            this.expandedRowHeight = config.expandedRowHeight || 10;
+            this.squishedRowHeight = config.squishedRowHeight || 5;
+            this.height = config.height || 30;
+        } else {
+            this.render = config.render || renderFeature;
+            this.arrowSpacing = 30;
+            // adjust label positions to make sure they're always visible
+            monitorTrackDrag(this);
+            this.squishedRowHeight = config.squishedRowHeight || 15;
+            this.expandedRowHeight = config.expandedRowHeight || 30;
+            this.height = config.height || this.margin + 2 * this.expandedRowHeight;
+
+            // Set colorBy fields considering legacy options for backward compatibility
+            if (config.colorBy) {
+                if (config.colorBy.field) {
+                    config.colorTable = config.colorBy.pallete || config.colorBy.palette;
+                    config.colorBy = config.colorBy.field;
+                }
+                this.colorBy = config.colorBy;   // Can be undefined => default
+                if (config.colorTable) {
+                    this.colorTable = new ColorTable(config.colorTable);
+                } else {
+                    this.colorTable = new PaletteColorTable("Set1");
+                }
+            }
+        }
+    }
+
+    async postInit() {
+
+        if (typeof this.featureSource.getHeader === "function") {
+            this.header = await this.featureSource.getHeader();
+            if (this.disposed) return   // This track was removed during async load
+        }
+
+        // Set properties from track line
+        if (this.header) {
+            this.setTrackProperties(this.header);
+        }
+
+        if (this.visibilityWindow === undefined && typeof this.featureSource.defaultVisibilityWindow === 'function') {
+            this.visibilityWindow = await this.featureSource.defaultVisibilityWindow();
+        }
+
+        return this
+
+    }
+
+    get supportsWholeGenome() {
+        if (this.config.supportsWholeGenome !== undefined) {
+            return this.config.supportsWholeGenome
+        } else if (this.featureSource && typeof this.featureSource.supportsWholeGenome === 'function') {
+            return this.featureSource.supportsWholeGenome()
+        } else {
+            if (this.visibilityWindow === undefined && (this.config.indexed === false || !this.config.indexURL)) {
+                return true
+            }
+        }
+    }
+
+    async getFeatures(chr, start, end, bpPerPixel) {
+        const visibilityWindow = this.visibilityWindow;
+        return this.featureSource.getFeatures({chr, start, end, bpPerPixel, visibilityWindow})
+    };
+
+
+    /**
+     * The required height in pixels required for the track content.   This is not the visible track height, which
+     * can be smaller (with a scrollbar) or larger.
+     *
+     * @param features
+     * @returns {*}
+     */
+    computePixelHeight(features) {
+
+        if (this.displayMode === "COLLAPSED") {
+            return this.margin + this.expandedRowHeight
+        } else {
+            let maxRow = 0;
+            if (features && (typeof features.forEach === "function")) {
+                for (let feature of features) {
+                    if (feature.row && feature.row > maxRow) {
+                        maxRow = feature.row;
+                    }
+                }
+            }
+
+            const height = this.margin + (maxRow + 1) * ("SQUISHED" === this.displayMode ? this.squishedRowHeight : this.expandedRowHeight);
+            return height
+
+        }
+    };
+
+    draw(options) {
+
+        const featureList = options.features;
+        const ctx = options.context;
+        const bpPerPixel = options.bpPerPixel;
+        const bpStart = options.bpStart;
+        const pixelWidth = options.pixelWidth;
+        const pixelHeight = options.pixelHeight;
+        const bpEnd = bpStart + pixelWidth * bpPerPixel + 1;
+
+
+        if (!this.config.isMergedTrack) {
+            IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+        }
+
+        if (featureList) {
+
+            const rowFeatureCount = [];
+            options.rowLastX = [];
+            options.rowLastLabelX = [];
+            for (let feature of featureList) {
+                if (feature.start > bpStart && feature.end < bpEnd) {
+                    const row = this.displayMode === "COLLAPSED" ? 0 : feature.row || 0;
+                    if (rowFeatureCount[row] === undefined) {
+                        rowFeatureCount[row] = 1;
+                    } else {
+                        rowFeatureCount[row]++;
+                    }
+                    options.rowLastX[row] = -Number.MAX_SAFE_INTEGER;
+                    options.rowLastLabelX[row] = -Number.MAX_SAFE_INTEGER;
+                }
+            }
+            const maxFeatureCount = Math.max(1, Math.max(...rowFeatureCount));
+            const pixelsPerFeature = pixelWidth / maxFeatureCount;
+
+            let lastPxEnd = [];
+            for (let feature of featureList) {
+                if (feature.end < bpStart) continue
+                if (feature.start > bpEnd) break
+                const row = this.displayMode === 'COLLAPSED' ? 0 : feature.row;
+                options.drawLabel = options.labelAllFeatures || pixelsPerFeature > 10;
+                const pxEnd = Math.ceil((feature.end - bpStart) / bpPerPixel);
+                const last = lastPxEnd[row];
+                if (!last || pxEnd > last) {
+                    this.render.call(this, feature, bpStart, bpPerPixel, pixelHeight, ctx, options);
+
+                    // Ensure a visible gap between features
+                    const pxStart = Math.floor((feature.start - bpStart) / bpPerPixel);
+                    if (last && pxStart - last <= 0) {
+                        ctx.globalAlpha = 0.5;
+                        IGVGraphics.strokeLine(ctx, pxStart, 0, pxStart, pixelHeight, {'strokeStyle': "rgb(255, 255, 255)"});
+                        ctx.globalAlpha = 1.0;
+                    }
+                    lastPxEnd[row] = pxEnd;
+                }
+            }
+
+        } else {
+            console.log("No feature list");
+        }
+
+    };
+
+    clickedFeatures(clickState) {
+
+        const y = clickState.y - this.margin;
+        const allFeatures = super.clickedFeatures(clickState);
+
+        let row;
+        switch (this.displayMode) {
+            case 'SQUISHED':
+                row = Math.floor(y / this.squishedRowHeight);
+                break
+            case 'EXPANDED':
+                row = Math.floor(y / this.expandedRowHeight);
+                break
+            default:
+                row = undefined;
+        }
+
+        return allFeatures.filter(function (feature) {
+            return (row === undefined || feature.row === undefined || row === feature.row)
+        })
+    }
+
+    /**
+     * Return "popup data" for feature @ genomic location.  Data is an array of key-value pairs
+     */
+    popupData(clickState, features) {
+
+        if (features === undefined) features = this.clickedFeatures(clickState);
+        const genomicLocation = clickState.genomicLocation;
+        const data = [];
+        for (let feature of features) {
+
+            // Whole genome hack, whole-genome psuedo features store the "real" feature in an _f field
+            const f = feature._f || feature;
+
+            const featureData = (typeof f.popupData === "function") ?
+                f.popupData(genomicLocation) :
+                this.extractPopupData(f);
+
+            if (featureData) {
+
+                if (data.length > 0) {
+                    data.push("<hr/><hr/>");
+                }
+
+                // If we have an infoURL, find the name property and create the link.  We do this at this level
+                // to catch name properties in both custom popupData functions and the generic extractPopupData function
+
+                const infoURL = this.infoURL || this.config.infoURL;
+                for (let fd of featureData) {
+                    data.push(fd);
+                    if (infoURL &&
+                        fd.name &&
+                        fd.name.toLowerCase() === "name" &&
+                        fd.value &&
+                        isString$2(fd.value) &&
+                        !fd.value.startsWith("<")) {
+                        const href = infoURL.replace("$$", feature.name);
+                        fd.value = `<a target=_blank href=${href}>${fd.value}</a>`;
+                    }
+                }
+
+
+                //Array.prototype.push.apply(data, featureData);
+
+                // If we have clicked over an exon number it.
+                // Disabled for GFF and GTF files if the visibility window is < the feature length since we don't know if we have all exons
+                const isGFF = "gff" === this.config.format || "gff3" === this.config.format || "gtf" === this.config.format;
+                if (f.exons) {
+                    for (let i = 0; i < f.exons.length; i++) {
+                        const exon = f.exons[i];
+                        if (genomicLocation >= exon.start && genomicLocation <= exon.end) {
+                            const exonNumber = isGFF ?
+                                exon.number :
+                                f.strand === "-" ? f.exons.length - i : i + 1;
+                            if (exonNumber) {
+                                data.push('<hr/>');
+                                data.push({name: "Exon Number", value: exonNumber});
+                            }
+                            break
+                        }
+                    }
+                }
+            }
+        }
+
+        return data
+
+    }
+
+    menuItemList() {
+
+        const menuItems = [];
+
+        if (this.render === renderSnp) {
+            menuItems.push('<hr/>');
+            for (let colorScheme of ["function", "class"]) {
+                menuItems.push({
+                    object: $$1(createCheckbox('Color by ' + colorScheme, colorScheme === this.colorBy)),
+                    click: () => {
+                        this.colorBy = colorScheme;
+                        this.trackView.repaintViews();
+                    }
+                });
+            }
+        }
+
+        menuItems.push('<hr/>');
+        for (let displayMode of ["COLLAPSED", "SQUISHED", "EXPANDED"]) {
+            const lut =
+                {
+                    "COLLAPSED": "Collapse",
+                    "SQUISHED": "Squish",
+                    "EXPANDED": "Expand"
+                };
+
+            menuItems.push(
+                {
+                    object: $$1(createCheckbox(lut[displayMode], displayMode === this.displayMode)),
+                    click: () => {
+                        this.displayMode = displayMode;
+                        this.config.displayMode = displayMode;
+                        this.trackView.checkContentHeight();
+                        this.trackView.repaintViews();
+                    }
+                });
+        }
+
+        return menuItems
+
+    };
+
+
+    contextMenuItemList(clickState) {
+
+        const features = this.clickedFeatures(clickState);
+
+        if (undefined === features || 0 === features.length) {
+            return undefined
+        }
+
+        if (features.length > 1) {
+            features.sort((a, b) => (b.end - b.start) - (a.end - a.start));
+        }
+        const f = features[0];   // The shortest clicked feature
+
+        if ((f.end - f.start) <= 1000000) {
+            const list = [{
+                label: 'View feature sequence',
+                click: async () => {
+                    let seq = await this.browser.genome.getSequence(f.chr, f.start, f.end);
+                    if (!seq) {
+                        seq = "Unknown sequence";
+                    } else if (f.strand === '-') {
+                        seq = reverseComplementSequence(seq);
+                    }
+                    this.browser.alert.present(seq);
+
+                }
+            }];
+
+            if (isSecureContext() && navigator.clipboard !== undefined) {
+                list.push(
+                    {
+                        label: 'Copy feature sequence',
+                        click: async () => {
+                            let seq = await this.browser.genome.getSequence(f.chr, f.start, f.end);
+                            if (!seq) {
+                                seq = "Unknown sequence";
+                            } else if (f.strand === '-') {
+                                seq = reverseComplementSequence(seq);
+                            }
+                            try {
+                                await navigator.clipboard.writeText(seq);
+                            } catch (e) {
+                                console.error(e);
+                                this.browser.alert.present(`error copying sequence to clipboard ${e}`);
+                            }
+                        }
+                    }
+                );
+            }
+            list.push('<hr/>');
+            return list
+        } else {
+            return undefined
+        }
+    }
+
+    description() {
+
+        // if('snp' === this.type) {
+        if (renderSnp === this.render) {
+            let desc = "<html>" + this.name + '<hr/>';
+            desc += '<em>Color By Function:</em><br>';
+            desc += '<span style="color:red">Red</span>: Coding-Non-Synonymous, Splice Site<br>';
+            desc += '<span style="color:green">Green</span>: Coding-Synonymous<br>';
+            desc += '<span style="color:blue">Blue</span>: Untranslated<br>';
+            desc += '<span style="color:black">Black</span>: Intron, Locus, Unknown<br><br>';
+            desc += '<em>Color By Class:</em><br>';
+            desc += '<span style="color:red">Red</span>: Deletion<br>';
+            desc += '<span style="color:green">Green</span>: MNP<br>';
+            desc += '<span style="color:blue">Blue</span>: Microsatellite, Named<br>';
+            desc += '<span style="color:black">Black</span>: Indel, Insertion, SNP';
+            desc += "</html>";
+            return desc
+        } else {
+            return super.description()
+        }
+
+    };
+
+    /**
+     * Return color for feature.
+     * @param feature
+     * @returns {string}
+     */
+
+    getColorForFeature(feature) {
+
+        let color;
+        if (this.altColor && "-" === feature.strand) {
+            color = (typeof this.altColor === "function") ? this.altColor(feature) : this.altColor;
+        } else if (this.color) {
+            color = (typeof this.color === "function") ? this.color(feature) : this.color;  // Explicit setting via menu, or possibly track line if !config.color
+        } else if (this.colorBy) {
+            const value = feature.getAttributeValue ?
+                feature.getAttributeValue(this.colorBy) :
+                feature[this.colorBy];
+            color = this.colorTable.getColor(value);
+        } else if (feature.color) {
+            color = feature.color;   // Explicit color for feature
+        }
+
+        // If no explicit setting use the default
+        if (!color) {
+            color = DEFAULT_COLOR$2;   // Track default
+        }
+
+        if (feature.alpha && feature.alpha !== 1) {
+            color = IGVColor.addAlpha(color, feature.alpha);
+        } else if (this.useScore && feature.score && !Number.isNaN(feature.score)) {
+            // UCSC useScore option, for scores between 0-1000.  See https://genome.ucsc.edu/goldenPath/help/customTrack.html#TRACK
+            const min = this.config.min ? this.config.min : this.viewLimitMin ? this.viewLimitMin : 0;
+            const max = this.config.max ? this.config.max : this.viewLimitMax ? this.viewLimitMax : 1000;
+            const alpha = getAlpha(min, max, feature.score);
+            feature.alpha = alpha;    // Avoid computing again
+            color = IGVColor.addAlpha(color, alpha);
+        }
+
+
+        function getAlpha(min, max, score) {
+            const binWidth = (max - min) / 9;
+            const binNumber = Math.floor((score - min) / binWidth);
+            return Math.min(1.0, 0.2 + (binNumber * 0.8) / 9)
+        }
+
+        return color
+    }
+
+
+    /**
+     * Called when the track is removed.  Do any needed cleanup here
+     */
+    dispose() {
+        this.trackView = undefined;
+    }
+}
+
+/**
+ * Monitors track drag events, updates label position to ensure that they're always visible.
+ * @param track
+ */
+function monitorTrackDrag(track) {
+
+    if (track.browser.on) {
+        track.browser.on('trackdragend', onDragEnd);
+        track.browser.on('trackremoved', unSubscribe);
+    }
+
+    function onDragEnd() {
+        if (track.trackView && track.displayMode !== "SQUISHED") {
+            track.trackView.updateViews();      // TODO -- refine this to the viewport that was dragged after DOM refactor
+        }
+    }
+
+    function unSubscribe(removedTrack) {
+        if (track.browser.un && track === removedTrack) {
+            track.browser.un('trackdragend', onDragEnd);
+            track.browser.un('trackremoved', unSubscribe);
+        }
+    }
+
+}
+
+class RegionTableBase {
+    constructor(config) {
+
+        this.config = config;
+
+        this.browser = config.browser;
+
+        this.columnFormat = config.columnFormat;
+
+        this.tableRowSelectionList = [];
+
+        this.tableDOM = domUtils.div({ class: 'igv-roi-table' });
+        // if(config.width) {
+        //     let [ w ] = config.width.split('px')
+        //     w = parseInt(w, 10)
+        //     this.tableDOM.style.width = `${Math.min(w, 1600)}px`
+        //
+        // }
+
+        config.parent.appendChild(this.tableDOM);
+
+        this.headerDOM = config;
+
+        this.tableColumnTitles = this.tableDOM;
+
+        this.tableRowContainer = this.tableDOM;
+
+        this.footerDOM = config.gotoButtonHandler;
+
+    }
+
+    set headerDOM({ browser, parent, headerTitle, dismissHandler }) {
+
+        // header
+        const dom = domUtils.div();
+        this.tableDOM.appendChild(dom);
+
+        // header title
+        const div = domUtils.div();
+        dom.appendChild(div);
+        div.innerHTML = headerTitle;
+
+        // table dismiss button
+        const dismiss = domUtils.div();
+        dom.appendChild(dismiss);
+        dismiss.appendChild(icons$1.createIcon('times'));
+
+        this.boundDismissHandler = mouseClickHandler.bind(this);
+
+        dismiss.addEventListener('click', this.boundDismissHandler);
+
+        function mouseClickHandler (event) {
+            event.stopPropagation();
+            dismissHandler();
+        }
+
+        const { y:y_root } = browser.root.getBoundingClientRect();
+        const { y:y_parent } = parent.getBoundingClientRect();
+        const constraint = -(y_parent - y_root);
+        makeDraggable(this.tableDOM, dom, { minX:0, minY:constraint });
+
+        this.tableDOM.style.display = 'none';
+
+        this._headerDOM = dom;
+
+    }
+
+    set tableColumnTitles(tableDOM) {
+
+        const tblColumnTitles = domUtils.div({ class: 'igv-roi-table-column-titles' });
+        tableDOM.appendChild(tblColumnTitles);
+
+        for (const { label, width } of this.columnFormat) {
+            const col = domUtils.div();
+            tblColumnTitles.appendChild(col);
+            col.style.width = width;
+            col.innerText = label;
+        }
+
+        this._tableColumnTitlesDOM = tblColumnTitles;
+
+    }
+
+    get tableColumnTitles() {
+        return this._tableColumnTitlesDOM
+    }
+
+    set tableRowContainer(container) {
+
+        const tblRowContainer = domUtils.div({ class: 'igv-roi-table-row-container' });
+        container.appendChild(tblRowContainer);
+
+        this._tableRowContainerDOM = tblRowContainer;
+
+    }
+
+    get tableRowContainer() {
+        return this._tableRowContainerDOM
+    }
+
+    set footerDOM(gotoButtonHandler) {
+
+        const dom = domUtils.div();
+        this.tableDOM.appendChild(dom);
+
+        // Go To Button
+        const gotoButton = domUtils.div({class: 'igv-roi-table-button'});
+        dom.appendChild(gotoButton);
+
+        gotoButton.id = 'igv-roi-table-view-button';
+        gotoButton.textContent = 'Go To';
+        gotoButton.style.pointerEvents = 'none';
+
+        this._footerDOM = dom;
+
+        this.gotoButton = gotoButton;
+
+        this.boundGotoButtonHandler = gotoButtonHandler.bind(this);
+
+        this.gotoButton.addEventListener('click', this.boundGotoButtonHandler);
+
+    }
+
+    tableRowDOMHelper(dom) {
+
+        dom.addEventListener('mousedown', event => {
+            event.stopPropagation();
+
+            dom.classList.toggle('igv-roi-table-row-selected');
+            dom.classList.contains('igv-roi-table-row-selected') ? dom.classList.remove('igv-roi-table-row-hover') : dom.classList.add('igv-roi-table-row-hover');
+
+            this.setTableRowSelectionState(dom.classList.contains('igv-roi-table-row-selected'));
+        });
+
+        dom.addEventListener('mouseover', e => {
+            dom.classList.contains('igv-roi-table-row-selected') ? dom.classList.remove('igv-roi-table-row-hover') : dom.classList.add('igv-roi-table-row-hover');
+        });
+
+        dom.addEventListener('mouseout', e => {
+            dom.classList.remove('igv-roi-table-row-hover');
+        });
+
+    }
+
+    clearTable() {
+        const elements = this.tableRowContainer.querySelectorAll('.igv-roi-table-row');
+        for (let el of elements) {
+            el.remove();
+        }
+    }
+
+    setTableRowSelectionState(isTableRowSelected) {
+        isTableRowSelected ? this.tableRowSelectionList.push(1) : this.tableRowSelectionList.pop();
+        this.gotoButton.style.pointerEvents = this.tableRowSelectionList.length > 0 ? 'auto' : 'none';
+    }
+
+    present() {
+        this.tableDOM.style.left = `${ 0 }px`;
+
+        const { y:y_root } = this.browser.root.getBoundingClientRect();
+        const { y:y_parent } = this.config.parent.getBoundingClientRect();
+
+        this.tableDOM.style.top  = `${ y_root - y_parent }px`;
+        this.tableDOM.style.display = 'flex';
+    }
+
+    dismiss() {
+        this.tableDOM.style.display = 'none';
+    }
+
+    dispose() {
+
+        this.tableDOM.innerHTML = '';
+        this.tableDOM.remove();
+
+        for (const key of Object.keys(this)) {
+            this[key] = undefined;
+        }
+
+        document.removeEventListener('click', this.boundDismissHandler);
+
+    }
+
+}
+
+class BlatTable extends RegionTableBase {
+
+    constructor(config) {
+
+        const cooked = Object.assign({ 'width':'1024px' }, config);
+        super(cooked);
+
+        this.descriptionDOM = config;
+
+    }
+
+    set descriptionDOM(config) {
+
+        if (config.description) {
+
+            let dom;
+
+            // BLAT result for query sequence
+            dom = domUtils.div({ class: 'igv-roi-table-description' });
+            this.tableDOM.insertBefore(dom, this.tableColumnTitles);
+            dom.style.height = 'auto';
+            dom.innerHTML = `BLAT result for query sequence:`;
+
+            // CTAATCAtctacactggtttctactg ...
+            dom = domUtils.div({ class: 'igv-roi-table-description' });
+            this.tableDOM.insertBefore(dom, this.tableColumnTitles);
+            dom.style.height = 'auto';
+            dom.style.maxHeight = '128px';
+            dom.innerHTML = config.description;
+
+            // Select one or more rows ...
+            dom = domUtils.div({ class: 'igv-roi-table-goto-explainer' });
+            this.tableDOM.insertBefore(dom, this.tableColumnTitles);
+            dom.innerHTML = `Select one or more rows and click Go To to view the regions`;
+
+        }
+
+    }
+
+    tableRowDOM(record) {
+
+        const dom = domUtils.div({ class: 'igv-roi-table-row' });
+
+        const pretty = record.map(item => isFinite(item) ? numberFormatter$1(item) : item);
+
+        for (let i = 0; i < pretty.length; i++) {
+
+            const el = domUtils.div();
+            dom.appendChild(el);
+
+            const format = this.columnFormat[ i ];
+            el.style.width = format.width || 'fit-content';
+            el.innerText = pretty[ i ];
+        }
+
+        this.tableRowDOMHelper(dom);
+
+        return dom
+    }
+
+    renderTable(records) {
+
+        Array.from(this.tableRowContainer.querySelectorAll('.igv-roi-table-row')).forEach(el => el.remove());
+
+        if (records.length > 0) {
+
+            for (let record of records) {
+                const row = this.tableRowDOM(record);
+                this.tableRowContainer.appendChild(row);
+            }
+
+        }
+
+    }
+
+    static getColumnFormatConfiguration() {
+
+        /*
+        return [
+            { label:         'chr', width: '60px' },
+            { label:       'start', width: '100px' },
+            { label:         'end', width: '100px' },
+            { label:      'strand', width: '50px' },
+            { label:       'score', width: '50px' },
+            { label:       'match', width: '50px' },
+            { label:   "mis-match", width: '70px' },
+            { label:  "rep. match", width: '70px' },
+            { label:         "N's", width: '32px' },
+            { label: 'Q gap count', width: '90px' },
+            { label: 'Q gap bases', width: '90px' },
+            { label: 'T gap count', width: '90px' },
+            { label: 'T gap bases', width: '90px' },
+        ]
+        */
+
+        return [
+            { label:         'chr', width: '7%' },
+            { label:       'start', width: '12%' },
+            { label:         'end', width: '12%' },
+            { label:      'strand', width: '5%' },
+            { label:       'score', width: '5%' },
+            { label:       'match', width: '5%' },
+            { label:   "mis-match", width: '7%' },
+            { label:  "rep. match", width: '7%' },
+            { label:         "N's", width: '3%' },
+            { label: 'Q gap count', width: '9%' },
+            { label: 'Q gap bases', width: '9%' },
+            { label: 'T gap count', width: '9%' },
+            { label: 'T gap bases', width: '9%' },
+        ]
+    }
+
+    static gotoButtonHandler (event) {
+
+        event.stopPropagation();
+
+        const selectedRows = this.tableDOM.querySelectorAll('.igv-roi-table-row-selected');
+
+        const loci = [];
+        for (const row of selectedRows) {
+
+            const record = [];
+            row.querySelectorAll('div').forEach(el => record.push(el.innerText));
+
+            const [ chr, start, end ] = record;
+            loci.push(`${ chr }:${ start }-${ end }`);
+        }
+
+        for (const el of this.tableDOM.querySelectorAll('.igv-roi-table-row')) {
+            el.classList.remove('igv-roi-table-row-selected');
+        }
+
+        this.setTableRowSelectionState(false);
+
+        this.browser.search(loci.join(' '));
+
+        // console.log(`browser search( ${loci.join(' ')} )`)
+
+    }
+
+}
+
+/*
+http://genome.ucsc.edu/cgi-bin/hgBlat
+?userSeq=CTAATCAtctacactggtttctactgaaatgtctgttgtcatagacttaattgtgtcttcagatacagcagttctgttatttctgagttttacctggggcaagagaatctttagcaagtttaaaggcacctatatctggaatcacccctccctccagatgaatatcacagactctcccattaaaggtcttgccTTCCTTGATAGCATCATCACTCCA
+&type=DNA
+&db=hg38
+&output=json
+ */
+
+//const blatServer = "https://genome.ucsc.edu/cgi-bin/hgBlat"
+const defaultBlatServer = "https://igv.org/services/blatUCSC.php";
+//const blatServer = "http://localhost:8000/blatUCSC.php"
+
+
+async function blat({url, userSeq, db}) {
+
+    url = url || defaultBlatServer;
+
+    const results = await postData(url, userSeq, db);
+
+    results.fields;
+
+    const features = results.blat.map(decodePSL);
+
+    return features
+}
+
+async function postData(url = "", userSeq, db) {
+
+    const data = new URLSearchParams();
+    data.append("userSeq", userSeq);
+    data.append("db", db);
+
+    const response = await fetch(url, { method: "post", body: data });
+    return response.json(); // parses JSON response into native JavaScript objects
+}
+
+const maxSequenceSize = 25000;
+
+class BlatTrack extends FeatureTrack {
+
+    constructor(config, browser) {
+        super(config, browser);
+        if (!this.name) {
+            this.name = 'Blat Results';
+        }
+        this.sequence = config.sequence;
+        this.table = undefined;
+    }
+
+    openTableView() {
+
+        if (undefined === this.table) {
+
+            const rows = this.config.features.map(f => [
+                f.chr,
+                (f.start + 1),
+                f.end,
+                f.strand,
+                f.score,
+                f.matches,
+                f.misMatches,
+                f.repMatches,
+                f.nCount,
+                f.qNumInsert,
+                f.qBaseInsert,
+                f.tNumInsert,
+                f.tBaseInsert
+            ]);
+
+            const config =
+                {
+                    browser: this.browser,
+                    parent: this.browser.parent,
+                    headerTitle: this.config.title,
+                    description: this.sequence,
+                    dismissHandler: () => {
+                        this.table.dismiss();
+                        this.table.dispose();
+                        this.table = undefined;
+                    },
+                    columnFormat: BlatTable.getColumnFormatConfiguration(),
+                    gotoButtonHandler: BlatTable.gotoButtonHandler
+                };
+
+            this.table = new BlatTable(config);
+            this.table.renderTable(rows);
+        }
+
+        this.table.present();
+
+    }
+
+    menuItemList() {
+
+        const menuItems = super.menuItemList();
+
+        menuItems.push('<hr/>');
+        menuItems.push({
+            label: 'Open table view',
+            click: () => this.openTableView()
+        });
+        return menuItems
+    }
+
+
+    /**
+     * Track has been permanently removed.  Release resources and other cleanup
+     */
+    dispose() {
+        super.dispose();
+        // Release DOM element for table
+        if (this.table) {
+            this.table.popover.parentElement.removeChild(this.table.popover);
+
+        }
+
+
+    }
+}
+
+
+async function createBlatTrack({sequence, browser, name, title}) {
+
+    if (sequence.length > maxSequenceSize) {
+        browser.alert.present(`Sequence size exceeds maximum allowed length (${sequence.length} > ${maxSequenceSize})`);
+        return
+    }
+
+    const db = browser.genome.id;   // TODO -- blat specific property
+
+    const url = browser.config["blatServerURL"];
+
+    try {
+
+        const features = await blat({url, userSeq: sequence, db});
+        const trackConfig = {
+            type: 'blat',
+            name: name || 'blat results',
+            title: title || 'blat results',
+            sequence: sequence,
+            altColor: 'rgb(176, 176, 236)',
+            color: 'rgb(236, 176, 176)',
+            features: features
+        };
+
+        const track = await browser.loadTrack(trackConfig);
+        track.openTableView();
+
+    } catch (e) {
+        browser.alert.present(`Error performing blat search:  ${e}`);
+    }
+
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const alignmentStartGap = 5;
+const downsampleRowHeight = 5;
+const DEFAULT_ALIGNMENT_COLOR = "rgb(185, 185, 185)";
+const DEFAULT_COVERAGE_COLOR = "rgb(150, 150, 150)";
+const DEFAULT_CONNECTOR_COLOR = "rgb(200, 200, 200)";
+const MINIMUM_BLAT_LENGTH = 20;
+
+class BAMTrack extends TrackBase {
+
+    static defaults = {
+        alleleFreqThreshold: 0.2,
+        visibilityWindow: 30000,
+        showCoverage: true,
+        showAlignments: true,
+        viewAsPairs: false,
+        pairsSupported: true,
+        showSoftClips: false,
+        showAllBases: false,
+        showInsertions: true,
+        showMismatches: true,
+        height: 300,
+        coverageTrackHeight: 50
+    }
+
+    constructor(config, browser) {
+        super(config, browser);
+    }
+
+    init(config) {
+
+        this.type = "alignment";
+        this.featureSource = new BamSource(config, this.browser);
+        this.coverageTrack = new CoverageTrack(config, this);
+        this.alignmentTrack = new AlignmentTrack(config, this);
+
+        super.init(config);
+
+        this.alignmentTrack.setTop(this.coverageTrack, this.showCoverage);
+
+        if(!this.showAlignments) {
+            this._height = this.coverageTrackHeight;
+        }
+
+        // The sort object can be an array in the case of multi-locus view, however if multiple sort positions
+        // are present for a given reference frame the last one will take precedence
+        if (config.sort) {
+            if (Array.isArray(config.sort)) {
+                // Legacy support
+                this.assignSort(config.sort[0]);
+            } else {
+                this.assignSort(config.sort);
+            }
+        }
+
+    }
+
+    set height(h) {
+        this._height = h;
+        if (this.showAlignments) {
+            this.alignmentTrack.height = this.showCoverage ? h - this.coverageTrackHeight : h;
+        }
+    }
+
+    get height() {
+        return this._height
+    }
+
+    get minTemplateLength() {
+        const configMinTLEN = this.config.minTLEN !== undefined ? this.config.minTLEN : this.config.minFragmentLength;
+        return (configMinTLEN !== undefined) ? configMinTLEN :
+            this._pairedEndStats ? this._pairedEndStats.minTLEN : 0
+    }
+
+    get maxTemplateLength() {
+        const configMaxTLEN = this.config.maxTLEN !== undefined ? this.config.maxTLEN : this.config.maxFragmentLength;
+        return (configMaxTLEN !== undefined) ? configMaxTLEN :
+            this._pairedEndStats ? this._pairedEndStats.maxTLEN : 1000
+    }
+
+    sort(options) {
+        options = this.assignSort(options);
+
+        for (let vp of this.trackView.viewports) {
+            if (vp.containsPosition(options.chr, options.position)) {
+                const alignmentContainer = vp.cachedFeatures;
+                if (alignmentContainer) {
+                    alignmentContainer.sortRows(options);
+                    vp.repaint();
+                }
+            }
+        }
+    }
+
+    /**
+     * Fix syntax problems for sort options.
+     * @param options
+     */
+    assignSort(options) {
+        // convert old syntax
+        if (options.locus) {
+            const range = parseLocusString$1(options.locus);
+            options.chr = range.chr;
+            options.position = range.start;
+        } else {
+            options.position--;
+        }
+        options.direction = options.direction === "ASC" || options.direction === true;
+
+        // chr aliasing
+        options.chr = this.browser.genome.getChromosomeName(options.chr);
+        this.sortObject = options;
+
+        return this.sortObject
+    }
+
+    async getFeatures(chr, bpStart, bpEnd, bpPerPixel, viewport) {
+
+        const alignmentContainer = await this.featureSource.getAlignments(chr, bpStart, bpEnd);
+
+        if (alignmentContainer.paired && !this._pairedEndStats && !this.config.maxFragmentLength) {
+            const pairedEndStats = new PairedEndStats(alignmentContainer.alignments, this.config);
+            if (pairedEndStats.totalCount > 99) {
+                this._pairedEndStats = pairedEndStats;
+            }
+        }
+        alignmentContainer.alignments = undefined;  // Don't need to hold onto these anymore
+
+        const sort = this.sortObject;
+        if (sort) {
+            if (sort.chr === chr && sort.position >= bpStart && sort.position <= bpEnd) {
+                alignmentContainer.sortRows(sort);
+            }
+        }
+
+        return alignmentContainer
+    }
+
+
+    /**
+     * Compute the pixel height required to display all content.  This is not the same as the viewport height
+     * (track.height) which might include a scrollbar.
+     *
+     * @param alignmentContainer
+     * @returns {number}
+     */
+    computePixelHeight(alignmentContainer) {
+        return (this.showCoverage ? this.coverageTrackHeight : 0) +
+            (this.showAlignments ? this.alignmentTrack.computePixelHeight(alignmentContainer) : 0)
+    }
+
+    draw(options) {
+
+        IGVGraphics.fillRect(options.context, 0, options.pixelTop, options.pixelWidth, options.pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+
+        if (true === this.showCoverage && this.coverageTrackHeight > 0) {
+            this.trackView.axisCanvas.style.display = 'block';
+            this.coverageTrack.draw(options);
+        } else {
+            this.trackView.axisCanvas.style.display = 'none';
+        }
+
+        if (true === this.showAlignments) {
+            this.alignmentTrack.setTop(this.coverageTrack, this.showCoverage);
+            this.alignmentTrack.draw(options);
+        }
+    }
+
+    paintAxis(ctx, pixelWidth, pixelHeight) {
+
+        this.coverageTrack.paintAxis(ctx, pixelWidth, this.coverageTrackHeight);
+
+        // if (this.browser.isMultiLocusMode()) {
+        //     ctx.clearRect(0, 0, pixelWidth, pixelHeight);
+        // } else {
+        //     this.coverageTrack.paintAxis(ctx, pixelWidth, this.coverageTrackHeight);
+        // }
+    }
+
+    contextMenuItemList(config) {
+        return this.alignmentTrack.contextMenuItemList(config)
+    }
+
+    popupData(clickState) {
+        if (true === this.showCoverage && clickState.y >= this.coverageTrack.top && clickState.y < this.coverageTrackHeight) {
+            return this.coverageTrack.popupData(clickState)
+        } else {
+            return this.alignmentTrack.popupData(clickState)
+        }
+    }
+
+    /**
+     * Return the features (alignment, coverage, downsampled interval) clicked on.  Needed for "onclick" event.
+     * @param clickState
+     * @param features
+     */
+    clickedFeatures(clickState) {
+
+        let clickedObject;
+        if (true === this.showCoverage && clickState.y >= this.coverageTrack.top && clickState.y < this.coverageTrackHeight) {
+            clickedObject = this.coverageTrack.getClickedObject(clickState);
+        } else {
+            clickedObject = this.alignmentTrack.getClickedObject(clickState);
+        }
+        return clickedObject ? [clickedObject] : undefined
+    }
+
+    hoverText(clickState) {
+        if (true === this.showCoverage && clickState.y >= this.coverageTrack.top && clickState.y < this.coverageTrackHeight) {
+            const clickedObject = this.coverageTrack.getClickedObject(clickState);
+            if (clickedObject) {
+                return clickedObject.hoverText()
+            }
+        }
+
+    }
+
+    menuItemList() {
+
+
+        // Start with overage track items
+        let menuItems = [];
+
+        menuItems = menuItems.concat(MenuUtils.numericDataMenuItems(this.trackView));
+
+        // Color by items
+        menuItems.push('<hr/>');
+        const $e = $$1('<div class="igv-track-menu-category">');
+        $e.text('Color by:');
+        menuItems.push({name: undefined, object: $e, click: undefined, init: undefined});
+
+        const colorByMenuItems = [{key: 'strand', label: 'read strand'}];
+        if (this.alignmentTrack.hasPairs) {
+            colorByMenuItems.push({key: 'firstOfPairStrand', label: 'first-of-pair strand'});
+            colorByMenuItems.push({key: 'pairOrientation', label: 'pair orientation'});
+            colorByMenuItems.push({key: 'tlen', label: 'insert size (TLEN)'});
+            colorByMenuItems.push({key: 'unexpectedPair', label: 'pair orientation & insert size (TLEN)'});
+        }
+        const tagLabel = 'tag' + (this.alignmentTrack.colorByTag ? ' (' + this.alignmentTrack.colorByTag + ')' : '');
+        colorByMenuItems.push({key: 'tag', label: tagLabel});
+        for (let item of colorByMenuItems) {
+            const selected = (this.alignmentTrack.colorBy === item.key);
+            menuItems.push(this.colorByCB(item, selected));
+        }
+
+        // Show coverage / alignment options
+        const adjustTrackHeight = () => {
+            if (!this.autoHeight) {
+                const h =
+                    (this.showCoverage ? this.coverageTrackHeight : 0) +
+                    (this.showAlignments ? this.alignmentTrack.height : 0);
+                this.trackView.setTrackHeight(h);
+            }
+        };
+
+        menuItems.push('<hr/>');
+        menuItems.push({
+            object: $$1(createCheckbox("Show Coverage", this.showCoverage)),
+            click: () => {
+                this.showCoverage = !this.showCoverage;
+                adjustTrackHeight();
+                this.trackView.checkContentHeight();
+                this.trackView.repaintViews();
+            }
+        });
+        menuItems.push({
+            object: $$1(createCheckbox("Show Alignments", this.showAlignments)),
+            click: () => {
+                this.showAlignments = !this.showAlignments;
+                adjustTrackHeight();
+                this.trackView.checkContentHeight();
+                this.trackView.repaintViews();
+            }
+        });
+
+        // Show all bases
+        menuItems.push('<hr/>');
+        menuItems.push({
+            object: $$1(createCheckbox("Show all bases", this.showAllBases)),
+            click: () => {
+                this.showAllBases = !this.showAllBases;
+                this.config.showAllBases = this.showAllBases;
+                this.trackView.repaintViews();
+            }
+        });
+
+        // Show mismatches
+        menuItems.push('<hr/>');
+        menuItems.push({
+            object: $$1(createCheckbox("Show mismatches", this.showMismatches)),
+            click: () => {
+                this.showMismatches = !this.showMismatches;
+                this.config.showMismatches = this.showMismatches;
+                this.trackView.repaintViews();
+            }
+        });
+
+        // Insertions
+        menuItems.push({
+            object: $$1(createCheckbox("Show insertions", this.showInsertions)),
+            click: () => {
+                this.showInsertions = !this.showInsertions;
+                this.config.showInsertions = this.showInsertions;
+                this.getCachedAlignmentContainers();
+                this.trackView.repaintViews();
+            }
+        });
+
+        // Soft clips
+        menuItems.push({
+            object: $$1(createCheckbox("Show soft clips", this.showSoftClips)),
+            click: () => {
+                this.showSoftClips = !this.showSoftClips;
+                this.config.showSoftClips = this.showSoftClips;
+                this.featureSource.setShowSoftClips(this.showSoftClips);
+                const alignmentContainers = this.getCachedAlignmentContainers();
+                for (let ac of alignmentContainers) {
+                    ac.setShowSoftClips(this.showSoftClips);
+                }
+                this.trackView.repaintViews();
+            }
+        });
+
+        // View as pairs
+        if (this.pairsSupported && this.alignmentTrack.hasPairs) {
+            menuItems.push('<hr/>');
+            menuItems.push({
+                object: $$1(createCheckbox("View as pairs", this.viewAsPairs)),
+                click: () => {
+                    this.viewAsPairs = !this.viewAsPairs;
+                    this.config.viewAsPairs = this.viewAsPairs;
+                    this.featureSource.setViewAsPairs(this.viewAsPairs);
+                    const alignmentContainers = this.getCachedAlignmentContainers();
+                    for (let ac of alignmentContainers) {
+                        ac.setViewAsPairs(this.viewAsPairs);
+                    }
+                    this.trackView.repaintViews();
+                }
+            });
+        }
+
+        // Add chords to JBrowse circular view, if present
+        if (this.browser.circularView &&
+            (this.alignmentTrack.hasPairs || this.alignmentTrack.hasSupplemental)) {
+            menuItems.push('<hr/>');
+            if (this.alignmentTrack.hasPairs) {
+                menuItems.push({
+                    label: 'Add discordant pairs to circular view',
+                    click: () => {
+                        for (let viewport of this.trackView.viewports) {
+                            this.addPairedChordsForViewport(viewport);
+                        }
+                    }
+                });
+            }
+            if (this.alignmentTrack.hasSupplemental) {
+                menuItems.push({
+                    label: 'Add split reads to circular view',
+                    click: () => {
+                        for (let viewport of this.trackView.viewports) {
+                            this.addSplitChordsForViewport(viewport);
+                        }
+                    }
+                });
+            }
+        }
+
+
+        // Display mode
+        menuItems.push('<hr/>');
+        const $dml = $$1('<div class="igv-track-menu-category">');
+        $dml.text('Display mode:');
+        menuItems.push({name: undefined, object: $dml, click: undefined, init: undefined});
+
+        menuItems.push({
+            object: $$1(createCheckbox("expand", this.alignmentTrack.displayMode === "EXPANDED")),
+            click: () => {
+                this.alignmentTrack.displayMode = "EXPANDED";
+                this.config.displayMode = "EXPANDED";
+                this.trackView.checkContentHeight();
+                this.trackView.repaintViews();
+            }
+        });
+
+        menuItems.push({
+            object: $$1(createCheckbox("squish", this.alignmentTrack.displayMode === "SQUISHED")),
+            click: () => {
+                this.alignmentTrack.displayMode = "SQUISHED";
+                this.config.displayMode = "SQUISHED";
+                this.trackView.checkContentHeight();
+                this.trackView.repaintViews();
+            }
+        });
+
+        return menuItems
+    }
+
+
+    /**
+     * Create a "color by" checkbox menu item, optionally initially checked
+     * @param menuItem
+     * @param showCheck
+     * @returns {{init: undefined, name: undefined, click: clickHandler, object: (jQuery|HTMLElement|jQuery.fn.init)}}
+     */
+    colorByCB(menuItem, showCheck) {
+        const $e = $$1(createCheckbox(menuItem.label, showCheck));
+        const clickHandler = (ev) => {
+
+            if (menuItem.key !== 'tag') {
+                if (menuItem.key === this.alignmentTrack.colorBy) {
+                    this.alignmentTrack.colorBy = 'none';
+                    this.config.colorBy = 'none';
+                    this.trackView.repaintViews();
+                } else {
+                    this.alignmentTrack.colorBy = menuItem.key;
+                    this.config.colorBy = menuItem.key;
+                    this.trackView.repaintViews();
+                }
+            } else {
+                this.browser.inputDialog.present({
+                    label: 'Tag Name',
+                    value: this.alignmentTrack.colorByTag ? this.alignmentTrack.colorByTag : '',
+                    callback: (tag) => {
+                        if (tag) {
+                            this.alignmentTrack.colorBy = 'tag';
+                            this.alignmentTrack.colorByTag = tag;
+                            if (!this.alignmentTrack.tagColors) {
+                                this.alignmentTrack.tagColors = new PaletteColorTable("Set1");
+                            }
+                        } else {
+                            this.alignmentTrack.colorBy = 'none';
+                            this.alignmentTrack.colorByTag = '';
+                        }
+                        this.trackView.repaintViews();
+                    }
+                }, ev);
+
+            }
+
+        };
+
+        return {name: undefined, object: $e, click: clickHandler, init: undefined}
+    }
+
+    /**
+     * Return the current state of the track.  Used to create sessions and bookmarks.
+     *
+     * @returns {*|{}}
+     */
+    getState() {
+
+        const config = super.getState();
+
+        if (this.sortObject) {
+            config.sort = {
+                chr: this.sortObject.chr,
+                position: this.sortObject.position + 1,
+                option: this.sortObject.option,
+                direction: this.sortObject.direction ? "ASC" : "DESC"
+            };
+        }
+
+        return config
+    }
+
+    getCachedAlignmentContainers() {
+        return this.trackView.viewports.map(vp => vp.cachedFeatures)
+    }
+
+    get dataRange() {
+        return this.coverageTrack.dataRange
+    }
+
+    set dataRange(dataRange) {
+        this.coverageTrack.dataRange = dataRange;
+    }
+
+    get logScale() {
+        return this.coverageTrack.logScale
+    }
+
+    set logScale(logScale) {
+        this.coverageTrack.logScale = logScale;
+    }
+
+    get autoscale() {
+        return this.coverageTrack.autoscale
+    }
+
+    set autoscale(autoscale) {
+        this.coverageTrack.autoscale = autoscale;
+    }
+
+    /**
+     * Add chords to the circular view for the given viewport, represented by its reference frame
+     * @param refFrame
+     */
+    addPairedChordsForViewport(viewport) {
+
+        const maxTemplateLength = this.maxTemplateLength;
+        const inView = [];
+        const refFrame = viewport.referenceFrame;
+        for (let a of viewport.cachedFeatures.allAlignments()) {
+            if (a.end >= refFrame.start
+                && a.start <= refFrame.end) {
+                if (a.paired) {
+                    if (a.end - a.start > maxTemplateLength) {
+                        inView.push(a);
+                    }
+                } else {
+                    if (a.mate
+                        && a.mate.chr
+                        && (a.mate.chr !== a.chr || Math.max(a.fragmentLength) > maxTemplateLength)) {
+                        inView.push(a);
+                    }
+                }
+            }
+        }
+        const chords = makePairedAlignmentChords(inView);
+        sendChords(chords, this, refFrame, 0.02);
+    }
+
+    addSplitChordsForViewport(viewport) {
+
+        const inView = [];
+        const refFrame = viewport.referenceFrame;
+        for (let a of viewport.cachedFeatures.allAlignments()) {
+
+            const sa = a.hasTag('SA');
+            if (a.end >= refFrame.start && a.start <= refFrame.end && sa) {
+                inView.push(a);
+            }
+        }
+
+        const chords = makeSupplementalAlignmentChords(inView);
+        sendChords(chords, this, refFrame, 0.02);
+    }
+}
+
+
+class CoverageTrack {
+
+    constructor(config, parent) {
+        this.parent = parent;
+        this.featureSource = parent.featureSource;
+
+        this.paintAxis = paintAxis;
+        this.top = 0;
+
+        this.autoscale = config.autoscale || config.max === undefined;
+        if (!this.autoscale) {
+            this.dataRange = {
+                min: config.min || 0,
+                max: config.max
+            };
+        }
+
+    }
+
+    get height() {
+        return this.parent.coverageTrackHeight
+    }
+
+    draw(options) {
+
+        const pixelTop = options.pixelTop;
+        pixelTop + options.pixelHeight;
+        const nucleotideColors = this.parent.browser.nucleotideColors;
+
+        if (pixelTop > this.height) {
+            return //scrolled out of view
+        }
+
+        const ctx = options.context;
+        const alignmentContainer = options.features;
+        const coverageMap = alignmentContainer.coverageMap;
+
+        let sequence;
+        if (coverageMap.refSeq) {
+            sequence = coverageMap.refSeq.toUpperCase();
+        }
+
+        const bpPerPixel = options.bpPerPixel;
+        const bpStart = options.bpStart;
+        const pixelWidth = options.pixelWidth;
+        const bpEnd = bpStart + pixelWidth * bpPerPixel + 1;
+
+        // paint for all coverage buckets
+        // If alignment track color is != default, use it
+        let color;
+        if (this.parent.coverageColor) {
+            color = this.parent.coverageColor;
+        } else if (this.parent.color  && typeof this.parent.color !== "function") {
+            color = IGVColor.darkenLighten(this.parent.color, -35);
+        } else {
+            color = DEFAULT_COVERAGE_COLOR;
+        }
+        IGVGraphics.setProperties(ctx, {
+            fillStyle: color,
+            strokeStyle: color
+        });
+
+        const w = Math.max(1, Math.ceil(1.0 / bpPerPixel));
+        for (let i = 0, len = coverageMap.coverage.length; i < len; i++) {
+
+            const bp = (coverageMap.bpStart + i);
+            if (bp < bpStart) continue
+            if (bp > bpEnd) break
+
+            const item = coverageMap.coverage[i];
+            if (!item) continue
+
+            const h = Math.round((item.total / this.dataRange.max) * this.height);
+            const y = this.height - h;
+            const x = Math.floor((bp - bpStart) / bpPerPixel);
+
+
+            // IGVGraphics.setProperties(ctx, {fillStyle: "rgba(0, 200, 0, 0.25)", strokeStyle: "rgba(0, 200, 0, 0.25)" });
+            IGVGraphics.fillRect(ctx, x, y, w, h);
+        }
+
+        // coverage mismatch coloring -- don't try to do this in above loop, color bar will be overwritten when w<1
+        if (sequence) {
+            for (let i = 0, len = coverageMap.coverage.length; i < len; i++) {
+
+                const bp = (coverageMap.bpStart + i);
+                if (bp < bpStart) continue
+                if (bp > bpEnd) break
+
+                const item = coverageMap.coverage[i];
+                if (!item) continue
+
+                const h = (item.total / this.dataRange.max) * this.height;
+                let y = this.height - h;
+                const x = Math.floor((bp - bpStart) / bpPerPixel);
+
+                const refBase = sequence[i];
+                if (item.isMismatch(refBase)) {
+                    IGVGraphics.setProperties(ctx, {fillStyle: nucleotideColors[refBase]});
+                    IGVGraphics.fillRect(ctx, x, y, w, h);
+
+                    let accumulatedHeight = 0.0;
+                    for (let nucleotide of ["A", "C", "T", "G"]) {
+
+                        const count = item["pos" + nucleotide] + item["neg" + nucleotide];
+
+                        // non-logoritmic
+                        const hh = (count / this.dataRange.max) * this.height;
+                        y = (this.height - hh) - accumulatedHeight;
+                        accumulatedHeight += hh;
+                        IGVGraphics.setProperties(ctx, {fillStyle: nucleotideColors[nucleotide]});
+                        IGVGraphics.fillRect(ctx, x, y, w, hh);
+                    }
+                }
+            }
+        }
+    }
+
+    getClickedObject(clickState) {
+
+        let features = clickState.viewport.cachedFeatures;
+        if (!features || features.length === 0) return
+
+        const genomicLocation = Math.floor(clickState.genomicLocation);
+        const coverageMap = features.coverageMap;
+        const coverageMapIndex = Math.floor(genomicLocation - coverageMap.bpStart);
+        return coverageMap.coverage[coverageMapIndex]
+    }
+
+    popupData(clickState) {
+
+        const nameValues = [];
+
+        const coverage = this.getClickedObject(clickState);
+        if (coverage) {
+            const genomicLocation = Math.floor(clickState.genomicLocation);
+            const referenceFrame = clickState.viewport.referenceFrame;
+
+            nameValues.push(referenceFrame.chr + ":" + numberFormatter$1(1 + genomicLocation));
+
+            nameValues.push({name: 'Total Count', value: coverage.total});
+
+            // A
+            let tmp = coverage.posA + coverage.negA;
+            if (tmp > 0) tmp = tmp.toString() + " (" + Math.round((tmp / coverage.total) * 100.0) + "%, " + coverage.posA + "+, " + coverage.negA + "- )";
+            nameValues.push({name: 'A', value: tmp});
+
+            // C
+            tmp = coverage.posC + coverage.negC;
+            if (tmp > 0) tmp = tmp.toString() + " (" + Math.round((tmp / coverage.total) * 100.0) + "%, " + coverage.posC + "+, " + coverage.negC + "- )";
+            nameValues.push({name: 'C', value: tmp});
+
+            // G
+            tmp = coverage.posG + coverage.negG;
+            if (tmp > 0) tmp = tmp.toString() + " (" + Math.round((tmp / coverage.total) * 100.0) + "%, " + coverage.posG + "+, " + coverage.negG + "- )";
+            nameValues.push({name: 'G', value: tmp});
+
+            // T
+            tmp = coverage.posT + coverage.negT;
+            if (tmp > 0) tmp = tmp.toString() + " (" + Math.round((tmp / coverage.total) * 100.0) + "%, " + coverage.posT + "+, " + coverage.negT + "- )";
+            nameValues.push({name: 'T', value: tmp});
+
+            // N
+            tmp = coverage.posN + coverage.negN;
+            if (tmp > 0) tmp = tmp.toString() + " (" + Math.round((tmp / coverage.total) * 100.0) + "%, " + coverage.posN + "+, " + coverage.negN + "- )";
+            nameValues.push({name: 'N', value: tmp});
+
+            nameValues.push('<HR/>');
+            nameValues.push({name: 'DEL', value: coverage.del.toString()});
+            nameValues.push({name: 'INS', value: coverage.ins.toString()});
+        }
+
+        return nameValues
+
+    }
+
+}
+
+class AlignmentTrack {
+
+    constructor(config, parent) {
+
+        this.parent = parent;
+        this.browser = parent.browser;
+        this.featureSource = parent.featureSource;
+        this.top = 0 === config.coverageTrackHeight ? 0 : config.coverageTrackHeight + 5;
+        this.displayMode = config.displayMode || "EXPANDED";
+        this.alignmentRowHeight = config.alignmentRowHeight || 14;
+        this.squishedRowHeight = config.squishedRowHeight || 3;
+
+        this.negStrandColor = config.negStrandColor || "rgba(150, 150, 230, 0.75)";
+        this.posStrandColor = config.posStrandColor || "rgba(230, 150, 150, 0.75)";
+        this.insertionColor = config.insertionColor || "rgb(138, 94, 161)";
+        this.insertionTextColor = config.insertionTextColor || "white";
+        this.showInsertionText = config.showInsertionText === undefined ? false : !!config.showInsertionText;
+        this.deletionColor = config.deletionColor || "black";
+        this.deletionTextColor = config.deletionTextColor || "black";
+        this.showDeletionText = config.showDeletionText === undefined ? false : !!config.showDeletionText;
+        this.skippedColor = config.skippedColor || "rgb(150, 170, 170)";
+        this.pairConnectorColor = config.pairConnectorColor;
+
+        this.smallTLENColor = config.smallTLENColor || config.smallFragmentLengthColor || "rgb(0, 0, 150)";
+        this.largeTLENColor = config.largeTLENColor || config.largeFragmentLengthColor || "rgb(200, 0, 0)";
+
+        this.pairOrientation = config.pairOrienation || 'fr';
+        this.pairColors = {};
+        this.pairColors["RL"] = config.rlColor || "rgb(0, 150, 0)";
+        this.pairColors["RR"] = config.rrColor || "rgb(20, 50, 200)";
+        this.pairColors["LL"] = config.llColor || "rgb(0, 150, 150)";
+
+        this.colorBy = config.colorBy || "unexpectedPair";
+        this.colorByTag = config.colorByTag ? config.colorByTag.toUpperCase() : undefined;
+        this.bamColorTag = config.bamColorTag === undefined ? "YC" : config.bamColorTag;
+
+        this.hideSmallIndels = config.hideSmallIndels;
+        this.indelSizeThreshold = config.indelSizeThreshold || 1;
+
+        this.hasPairs = false;   // Until proven otherwise
+        this.hasSupplemental = false;
+    }
+
+    setTop(coverageTrack, showCoverage) {
+        this.top = (0 === coverageTrack.height || false === showCoverage) ? 0 : (5 + coverageTrack.height);
+    }
+
+    /**
+     * Compute the pixel height required to display all content.
+     *
+     * @param alignmentContainer
+     * @returns {number|*}
+     */
+    computePixelHeight(alignmentContainer) {
+
+        if (alignmentContainer.packedAlignmentRows) {
+            const h = alignmentContainer.hasDownsampledIntervals() ? downsampleRowHeight + alignmentStartGap : 0;
+            const alignmentRowHeight = this.displayMode === "SQUISHED" ?
+                this.squishedRowHeight :
+                this.alignmentRowHeight;
+            return h + (alignmentRowHeight * alignmentContainer.packedAlignmentRows.length) + 5
+        } else {
+            return 0
+        }
+    }
+
+    draw(options) {
+
+        const alignmentContainer = options.features;
+        const ctx = options.context;
+        const bpPerPixel = options.bpPerPixel;
+        const bpStart = options.bpStart;
+        const pixelWidth = options.pixelWidth;
+        const bpEnd = bpStart + pixelWidth * bpPerPixel + 1;
+        const showSoftClips = this.parent.showSoftClips;
+        const showAllBases = this.parent.showAllBases;
+        const nucleotideColors = this.browser.nucleotideColors;
+
+        //alignmentContainer.repack(bpPerPixel, showSoftClips);
+        const packedAlignmentRows = alignmentContainer.packedAlignmentRows;
+
+
+        ctx.save();
+
+        let referenceSequence = alignmentContainer.sequence;
+        if (referenceSequence) {
+            referenceSequence = referenceSequence.toUpperCase();
+        }
+        let alignmentRowYInset = 0;
+
+        let pixelTop = options.pixelTop;
+        if (this.top) {
+            ctx.translate(0, this.top);
+        }
+        const pixelBottom = pixelTop + options.pixelHeight;
+
+        if (alignmentContainer.hasDownsampledIntervals()) {
+            alignmentRowYInset = downsampleRowHeight + alignmentStartGap;
+
+            alignmentContainer.downsampledIntervals.forEach(function (interval) {
+                var xBlockStart = (interval.start - bpStart) / bpPerPixel,
+                    xBlockEnd = (interval.end - bpStart) / bpPerPixel;
+
+                if (xBlockEnd - xBlockStart > 5) {
+                    xBlockStart += 1;
+                    xBlockEnd -= 1;
+                }
+                IGVGraphics.fillRect(ctx, xBlockStart, 2, (xBlockEnd - xBlockStart), downsampleRowHeight - 2, {fillStyle: "black"});
+            });
+
+        } else {
+            alignmentRowYInset = 0;
+        }
+
+        // Transient variable -- rewritten on every draw, used for click object selection
+        this.alignmentsYOffset = alignmentRowYInset;
+        const alignmentRowHeight = this.displayMode === "SQUISHED" ?
+            this.squishedRowHeight :
+            this.alignmentRowHeight;
+
+        if (packedAlignmentRows) {
+
+            const nRows = packedAlignmentRows.length;
+
+            for (let rowIndex = 0; rowIndex < nRows; rowIndex++) {
+
+                const alignmentRow = packedAlignmentRows[rowIndex];
+                const alignmentY = alignmentRowYInset + (alignmentRowHeight * rowIndex);
+                const alignmentHeight = alignmentRowHeight <= 4 ? alignmentRowHeight : alignmentRowHeight - 2;
+
+                if (alignmentY > pixelBottom) {
+                    break
+                } else if (alignmentY + alignmentHeight < pixelTop) {
+                    continue
+                }
+
+                for (let alignment of alignmentRow.alignments) {
+
+                    this.hasPairs = this.hasPairs || alignment.isPaired();
+                    if (this.browser.circularView) {
+                        // This is an expensive check, only do it if needed
+                        this.hasSupplemental = this.hasSupplemental || alignment.hasTag('SA');
+                    }
+
+                    if ((alignment.start + alignment.lengthOnRef) < bpStart) continue
+                    if (alignment.start > bpEnd) break
+                    if (true === alignment.hidden) {
+                        continue
+                    }
+
+                    if (alignment instanceof PairedAlignment) {
+
+                        drawPairConnector.call(this, alignment, alignmentY, alignmentHeight);
+
+                        drawSingleAlignment.call(this, alignment.firstAlignment, alignmentY, alignmentHeight);
+
+                        if (alignment.secondAlignment) {
+                            drawSingleAlignment.call(this, alignment.secondAlignment, alignmentY, alignmentHeight);
+                        }
+
+                    } else {
+                        drawSingleAlignment.call(this, alignment, alignmentY, alignmentHeight);
+                    }
+
+                }
+            }
+        }
+        ctx.restore();
+
+        // alignment is a PairedAlignment
+        function drawPairConnector(alignment, yRect, alignmentHeight) {
+
+            var connectorColor = this.getConnectorColor(alignment.firstAlignment),
+                xBlockStart = (alignment.connectingStart - bpStart) / bpPerPixel,
+                xBlockEnd = (alignment.connectingEnd - bpStart) / bpPerPixel,
+                yStrokedLine = yRect + alignmentHeight / 2;
+
+            if ((alignment.connectingEnd) < bpStart || alignment.connectingStart > bpEnd) {
+                return
+            }
+            if (alignment.mq <= 0) {
+                connectorColor = IGVColor.addAlpha(connectorColor, 0.15);
+            }
+            IGVGraphics.setProperties(ctx, {fillStyle: connectorColor, strokeStyle: connectorColor});
+            IGVGraphics.strokeLine(ctx, xBlockStart, yStrokedLine, xBlockEnd, yStrokedLine);
+
+        }
+
+        function drawSingleAlignment(alignment, yRect, alignmentHeight) {
+
+
+            if ((alignment.start + alignment.lengthOnRef) < bpStart || alignment.start > bpEnd) {
+                return
+            }
+
+            const blocks = showSoftClips ? alignment.blocks : alignment.blocks.filter(b => 'S' !== b.type);
+
+            let alignmentColor = this.getAlignmentColor(alignment);
+            const outlineColor = alignmentColor;
+            if (alignment.mq <= 0) {
+                alignmentColor = IGVColor.addAlpha(alignmentColor, 0.15);
+            }
+            IGVGraphics.setProperties(ctx, {fillStyle: alignmentColor, strokeStyle: outlineColor});
+
+            // Save bases to draw into an array for later drawing, so they can be overlaid on insertion blocks,
+            // which is relevant if we have insertions with size label
+            const basesToDraw = [];
+
+            for (let b = 0; b < blocks.length; b++) {   // Can't use forEach here -- we need ability to break
+
+                const block = blocks[b];
+
+                // Somewhat complex test, neccessary to insure gaps are drawn.
+                // If this is not the last block, and the next block starts before the orign (off screen to left) then skip.
+                if ((b !== blocks.length - 1) && blocks[b + 1].start < bpStart) continue
+
+                // drawBlock returns bases to draw, which are drawn on top of insertion blocks (if they're wider than
+                // the space between two bases) like in Java IGV
+                basesToDraw.push(...drawBlock.call(this, block, b));
+
+                if ((block.start + block.len) > bpEnd) {
+                    // Do this after drawBlock to insure gaps are drawn
+                    break
+                }
+            }
+
+            if (alignment.gaps) {
+                const yStrokedLine = yRect + alignmentHeight / 2;
+                for (let gap of alignment.gaps) {
+                    const sPixel = (gap.start - bpStart) / bpPerPixel;
+                    const ePixel = ((gap.start + gap.len) - bpStart) / bpPerPixel;
+                    const lineWidth = ePixel - sPixel;
+                    const gapLenText = gap.len.toString();
+                    const gapTextWidth = gapLenText.length * 6;
+                    const gapCenter = sPixel + (lineWidth / 2);
+
+                    const color = ("D" === gap.type) ? this.deletionColor : this.skippedColor;
+
+                    IGVGraphics.strokeLine(ctx, sPixel, yStrokedLine, ePixel, yStrokedLine, {
+                        strokeStyle: color,
+                        lineWidth: 2,
+                    });
+
+                    // Add gap width as text like Java IGV if it fits nicely and is a multi-base gap
+                    if (this.showDeletionText && gap.len > 1 && lineWidth >= gapTextWidth + 8) {
+                        const textStart = gapCenter - (gapTextWidth / 2);
+                        IGVGraphics.fillRect(ctx, textStart - 1, yRect - 1, gapTextWidth + 2, 12, {fillStyle: "white"});
+                        IGVGraphics.fillText(ctx, gapLenText, textStart, yRect + 10, {
+                            'font': 'normal 10px monospace',
+                            'fillStyle': this.deletionTextColor,
+                        });
+                    }
+                }
+            }
+
+            if (alignment.insertions && this.parent.showInsertions) {
+                let lastXBlockStart = -1;
+                for (let insertionBlock of alignment.insertions) {
+                    if (this.hideSmallIndels && insertionBlock.len <= this.indelSizeThreshold) {
+                        continue
+                    }
+                    if (insertionBlock.start < bpStart) {
+                        continue
+                    }
+                    if (insertionBlock.start > bpEnd) {
+                        break
+                    }
+
+                    const refOffset = insertionBlock.start - bpStart;
+                    const insertLenText = insertionBlock.len.toString();
+
+                    const textPixelWidth = 2 + (insertLenText.length * 6);
+                    const basePixelWidth = (!this.showInsertionText || insertionBlock.len === 1)
+                        ? 2
+                        : Math.round(insertionBlock.len / bpPerPixel);
+                    const widthBlock = Math.max(Math.min(textPixelWidth, basePixelWidth), 2);
+
+                    const xBlockStart = (refOffset / bpPerPixel) - (widthBlock / 2);
+                    if ((xBlockStart - lastXBlockStart) > 2) {
+                        const props = {fillStyle: this.insertionColor};
+
+                        // Draw decorations like Java IGV to make an 'I' shape
+                        IGVGraphics.fillRect(ctx, xBlockStart - 2, yRect, widthBlock + 4, 2, props);
+                        IGVGraphics.fillRect(ctx, xBlockStart, yRect + 2, widthBlock, alignmentHeight - 4, props);
+                        IGVGraphics.fillRect(ctx, xBlockStart - 2, yRect + alignmentHeight - 2, widthBlock + 4, 2, props);
+
+                        // Show # of inserted bases as text if it's a multi-base insertion and the insertion block
+                        // is wide enough to hold text (its size is capped at the text label size, but can be smaller
+                        // if the browser is zoomed out and the insertion is small)
+                        if (this.showInsertionText && insertionBlock.len > 1 && basePixelWidth > textPixelWidth) {
+                            IGVGraphics.fillText(ctx, insertLenText, xBlockStart + 1, yRect + 10, {
+                                'font': 'normal 10px monospace',
+                                'fillStyle': this.insertionTextColor,
+                            });
+                        }
+                        lastXBlockStart = xBlockStart;
+                    }
+                }
+            }
+
+            basesToDraw.forEach(({bbox, baseColor, readChar}) => {
+                renderBlockOrReadChar(ctx, bpPerPixel, bbox, baseColor, readChar);
+            });
+
+
+            function drawBlock(block, b) {
+                // Collect bases to draw for later rendering
+                const blockBasesToDraw = [];
+
+                const offsetBP = block.start - alignmentContainer.start;
+                const blockStartPixel = (block.start - bpStart) / bpPerPixel;
+                const blockEndPixel = ((block.start + block.len) - bpStart) / bpPerPixel;
+                const blockWidthPixel = Math.max(1, blockEndPixel - blockStartPixel);
+
+                //const arrowHeadWidthPixel = alignmentRowHeight / 2.0;
+                const nomPixelWidthOnRef = 100 / bpPerPixel;
+                const arrowHeadWidthPixel = Math.min(alignmentRowHeight / 2.0, nomPixelWidthOnRef / 6);
+
+                const isSoftClip = 'S' === block.type;
+
+                const strokeOutline =
+                    alignment.mq <= 0 ||
+                    this.highlightedAlignmentReadNamed === alignment.readName ||
+                    isSoftClip;
+
+                let blockOutlineColor = outlineColor;
+                if (this.highlightedAlignmentReadNamed === alignment.readName) blockOutlineColor = 'red';
+                else if (isSoftClip) blockOutlineColor = 'rgb(50,50,50)';
+
+                const lastBlockPositiveStrand = (true === alignment.strand && b === blocks.length - 1);
+                const lastBlockReverseStrand = (false === alignment.strand && b === 0);
+                const lastBlock = lastBlockPositiveStrand | lastBlockReverseStrand;
+
+                if (lastBlock) {
+                    let xListPixel;
+                    let yListPixel;
+                    if (lastBlockPositiveStrand) {
+                        xListPixel = [
+                            blockStartPixel,
+                            blockEndPixel,
+                            blockEndPixel + arrowHeadWidthPixel,
+                            blockEndPixel,
+                            blockStartPixel,
+                            blockStartPixel];
+                        yListPixel = [
+                            yRect,
+                            yRect,
+                            yRect + (alignmentHeight / 2.0),
+                            yRect + alignmentHeight,
+                            yRect + alignmentHeight,
+                            yRect];
+
+                    }
+
+                    // Last block on - strand ?
+                    else if (lastBlockReverseStrand) {
+                        xListPixel = [
+                            blockEndPixel,
+                            blockStartPixel,
+                            blockStartPixel - arrowHeadWidthPixel,
+                            blockStartPixel,
+                            blockEndPixel,
+                            blockEndPixel];
+                        yListPixel = [
+                            yRect,
+                            yRect,
+                            yRect + (alignmentHeight / 2.0),
+                            yRect + alignmentHeight,
+                            yRect + alignmentHeight,
+                            yRect];
+
+                    }
+                    IGVGraphics.fillPolygon(ctx, xListPixel, yListPixel, {fillStyle: alignmentColor});
+
+                    if (strokeOutline) {
+                        IGVGraphics.strokePolygon(ctx, xListPixel, yListPixel, {strokeStyle: blockOutlineColor});
+                    }
+                }
+
+                // Internal block
+                else {
+                    IGVGraphics.fillRect(ctx, blockStartPixel, yRect, blockWidthPixel, alignmentHeight, {fillStyle: alignmentColor});
+
+                    if (strokeOutline) {
+                        ctx.save();
+                        ctx.strokeStyle = blockOutlineColor;
+                        ctx.strokeRect(blockStartPixel, yRect, blockWidthPixel, alignmentHeight);
+                        ctx.restore();
+                    }
+                }
+
+
+                // Read base coloring
+
+                if (isSoftClip ||
+                    showAllBases ||
+                    this.parent.showMismatches && (referenceSequence && alignment.seq && alignment.seq !== "*")) {
+
+                    const seq = alignment.seq ? alignment.seq.toUpperCase() : undefined;
+                    const qual = alignment.qual;
+                    const seqOffset = block.seqOffset;
+                    const widthPixel = Math.max(1, 1 / bpPerPixel);
+
+
+                    for (let i = 0, len = block.len; i < len; i++) {
+
+                        const xPixel = ((block.start + i) - bpStart) / bpPerPixel;
+
+                        if (xPixel + widthPixel < 0) continue   // Off left edge
+                        if (xPixel > pixelWidth) break  // Off right edge
+
+                        let readChar = seq ? seq.charAt(seqOffset + i) : '';
+                        const refChar = offsetBP + i >= 0 ? referenceSequence.charAt(offsetBP + i) : '';
+
+                        if (readChar === "=") {
+                            readChar = refChar;
+                        }
+                        if (readChar === "X" || refChar !== readChar || isSoftClip || showAllBases) {
+
+                            let baseColor;
+                            if (!isSoftClip && qual !== undefined && qual.length > seqOffset + i) {
+                                const readQual = qual[seqOffset + i];
+                                baseColor = shadedBaseColor(readQual, nucleotideColors[readChar]);
+                            } else {
+                                baseColor = nucleotideColors[readChar];
+                            }
+                            if (baseColor) {
+                                blockBasesToDraw.push({
+                                    bbox: {
+                                        x: xPixel,
+                                        y: yRect,
+                                        width: widthPixel,
+                                        height: alignmentHeight
+                                    },
+                                    baseColor,
+                                    readChar,
+                                });
+                            }
+                        }
+                    }
+                }
+
+                return blockBasesToDraw
+            }
+
+            function renderBlockOrReadChar(context, bpp, bbox, color, char) {
+                var threshold,
+                    center;
+
+                threshold = 1.0 / 10.0;
+                if (bpp <= threshold && bbox.height >= 8) {
+
+                    // render letter
+                    const fontHeight = Math.min(10, bbox.height);
+                    context.font = '' + fontHeight + 'px sans-serif';
+                    center = bbox.x + (bbox.width / 2.0);
+                    IGVGraphics.strokeText(context, char, center - (context.measureText(char).width / 2), fontHeight - 1 + bbox.y, {strokeStyle: color});
+                } else {
+
+                    // render colored block
+                    IGVGraphics.fillRect(context, bbox.x, bbox.y, bbox.width, bbox.height, {fillStyle: color});
+                }
+            }
+        }
+
+    };
+
+    popupData(clickState) {
+        const clickedObject = this.getClickedObject(clickState);
+        return clickedObject ? clickedObject.popupData(clickState.genomicLocation) : undefined
+    };
+
+    contextMenuItemList(clickState) {
+
+        const viewport = clickState.viewport;
+        const list = [];
+
+        const sortByOption = (option) => {
+            const cs = this.parent.sortObject;
+            const direction = (cs && cs.position === Math.floor(clickState.genomicLocation)) ? !cs.direction : true;
+            const newSortObject = {
+                chr: viewport.referenceFrame.chr,
+                position: Math.floor(clickState.genomicLocation),
+                option: option,
+                direction: direction
+            };
+            this.parent.sortObject = newSortObject;
+            viewport.cachedFeatures.sortRows(newSortObject);
+            viewport.repaint();
+        };
+        list.push('<b>Sort by...</b>');
+        list.push({label: '&nbsp; base', click: () => sortByOption("BASE")});
+        list.push({label: '&nbsp; read strand', click: () => sortByOption("STRAND")});
+        list.push({label: '&nbsp; insert size', click: () => sortByOption("INSERT_SIZE")});
+        list.push({label: '&nbsp; gap size', click: () => sortByOption("GAP_SIZE")});
+        list.push({label: '&nbsp; chromosome of mate', click: () => sortByOption("MATE_CHR")});
+        list.push({label: '&nbsp; mapping quality', click: () => sortByOption("MQ")});
+        list.push({label: '&nbsp; read name', click: () => sortByOption("READ_NAME")});
+        list.push({label: '&nbsp; aligned read length', click: () => sortByOption("ALIGNED_READ_LENGTH")});
+        list.push({
+            label: '&nbsp; tag', click: () => {
+                const cs = this.parent.sortObject;
+                const direction = (cs && cs.position === Math.floor(clickState.genomicLocation)) ? !cs.direction : true;
+                const config =
+                    {
+                        label: 'Tag Name',
+                        value: this.sortByTag ? this.sortByTag : '',
+                        callback: (tag) => {
+                            if (tag) {
+                                const newSortObject = {
+                                    chr: viewport.referenceFrame.chr,
+                                    position: Math.floor(clickState.genomicLocation),
+                                    option: "TAG",
+                                    tag: tag,
+                                    direction: direction
+                                };
+                                this.sortByTag = tag;
+                                this.parent.sortObject = newSortObject;
+                                viewport.cachedFeatures.sortRows(newSortObject);
+                                viewport.repaint();
+                            }
+                        }
+                    };
+                this.browser.inputDialog.present(config, clickState.event);
+            }
+        });
+        list.push('<hr/>');
+
+        const clickedObject = this.getClickedObject(clickState);
+
+        if (clickedObject) {
+
+            const showSoftClips = this.parent.showSoftClips;
+            const clickedAlignment = (typeof clickedObject.alignmentContaining === 'function') ?
+                clickedObject.alignmentContaining(clickState.genomicLocation, showSoftClips) :
+                clickedObject;
+            if (clickedAlignment) {
+                if (clickedAlignment.isPaired() && clickedAlignment.isMateMapped()) {
+                    list.push({
+                        label: 'View mate in split screen',
+                        click: () => {
+                            if (clickedAlignment.mate) {
+                                const referenceFrame = clickState.viewport.referenceFrame;
+                                if (this.browser.genome.getChromosome(clickedAlignment.mate.chr)) {
+                                    this.highlightedAlignmentReadNamed = clickedAlignment.readName;
+                                    //this.browser.presentMultiLocusPanel(clickedAlignment, referenceFrame)
+                                    const bpWidth = referenceFrame.end - referenceFrame.start;
+                                    const frameStart = clickedAlignment.mate.position - bpWidth / 2;
+                                    const frameEnd = clickedAlignment.mate.position + bpWidth / 2;
+                                    this.browser.addMultiLocusPanel(clickedAlignment.mate.chr, frameStart, frameEnd, referenceFrame);
+                                } else {
+                                    this.browser.alert.present(`Reference does not contain chromosome: ${clickedAlignment.mate.chr}`);
+                                }
+                            }
+                        },
+                        init: undefined
+                    });
+                }
+
+                list.push({
+                    label: 'View read sequence',
+                    click: () => {
+                        const seqstring = clickedAlignment.seq; //.map(b => String.fromCharCode(b)).join("");
+                        if (!seqstring || "*" === seqstring) {
+                            this.browser.alert.present("Read sequence: *");
+                        } else {
+                            this.browser.alert.present(seqstring);
+                        }
+                    }
+                });
+
+                if (isSecureContext()) {
+                    list.push({
+                        label: 'Copy read sequence',
+                        click: async () => {
+                            const seq = clickedAlignment.seq; //.map(b => String.fromCharCode(b)).join("");
+                            try {
+                                //console.log(`seq: ${seq}`)
+                                await navigator.clipboard.writeText(seq);
+                            } catch (e) {
+                                console.error(e);
+                                this.browser.alert.present(`error copying sequence to clipboard ${e}`);
+                            }
+
+                        }
+                    });
+                }
+
+                // TODO if genome supports blat
+                const seqstring = clickedAlignment.seq;
+                if (seqstring && "*" != seqstring) {
+
+                    if (seqstring.length < maxSequenceSize) {
+                        list.push({
+                            label: 'BLAT read sequence',
+                            click: () => {
+                                const sequence = clickedAlignment.isNegativeStrand() ? reverseComplementSequence(seqstring) : seqstring;
+                                const name = `${clickedAlignment.readName} - blat`;
+                                const title = `${this.parent.name} - ${name}`;
+                                createBlatTrack({sequence, browser: this.browser, name, title});
+                            }
+                        });
+                    }
+
+                    const softClips = clickedAlignment.softClippedBlocks();
+                    if (softClips.left && softClips.left.len > MINIMUM_BLAT_LENGTH && softClips.left.len < maxSequenceSize) {
+                        list.push({
+                            label: 'BLAT left soft-clipped sequence',
+                            click: () => {
+                                const clippedSequence = seqstring.substr(softClips.left.seqOffset, softClips.left.len);
+                                const sequence = clickedAlignment.isNegativeStrand() ? reverseComplementSequence(clippedSequence) : clippedSequence;
+                                const name = `${clickedAlignment.readName} - blat left clip`;
+                                const title = `${this.parent.name} - ${name}`;
+                                createBlatTrack({sequence, browser: this.browser, name, title});
+                            }
+                        });
+                    }
+                    if (softClips.right && softClips.right.len > MINIMUM_BLAT_LENGTH && softClips.right.len < maxSequenceSize) {
+                        list.push({
+                            label: 'BLAT right soft-clipped sequence',
+                            click: () => {
+                                const clippedSequence = seqstring.substr(softClips.right.seqOffset, softClips.right.len);
+                                const sequence = clickedAlignment.isNegativeStrand() ? reverseComplementSequence(clippedSequence) : clippedSequence;
+                                const name = `${clickedAlignment.readName} - blat right clip`;
+                                const title = `${this.parent.name} - ${name}`;
+                                createBlatTrack({sequence, browser: this.browser, name, title});
+                            }
+                        });
+                    }
+                }
+
+                list.push('<hr/>');
+            }
+        }
+
+        // Experimental JBrowse feature
+        if (this.browser.circularView && (this.hasPairs || this.hasSupplemental)) {
+            if (this.hasPairs) {
+                list.push({
+                    label: 'Add discordant pairs to circular view',
+                    click: () => {
+                        this.parent.addPairedChordsForViewport(viewport);
+                    }
+                });
+            }
+            if (this.hasSupplemental) {
+                list.push({
+                    label: 'Add split reads to circular view',
+                    click: () => {
+                        this.parent.addSplitChordsForViewport(viewport);
+                    }
+                });
+            }
+            list.push('<hr/>');
+        }
+
+        return list
+
+    }
+
+    getClickedObject(clickState) {
+
+        const viewport = clickState.viewport;
+        const y = clickState.y;
+        const genomicLocation = clickState.genomicLocation;
+
+        const showSoftClips = this.parent.showSoftClips;
+
+        let features = viewport.cachedFeatures;
+        if (!features || features.length === 0) return
+
+        let packedAlignmentRows = features.packedAlignmentRows;
+        let downsampledIntervals = features.downsampledIntervals;
+        const alignmentRowHeight = this.displayMode === "SQUISHED" ?
+            this.squishedRowHeight :
+            this.alignmentRowHeight;
+
+        let packedAlignmentsIndex = Math.floor((y - this.top - this.alignmentsYOffset) / alignmentRowHeight);
+
+        if (packedAlignmentsIndex < 0) {
+            for (let i = 0; i < downsampledIntervals.length; i++) {
+                if (downsampledIntervals[i].start <= genomicLocation && (downsampledIntervals[i].end >= genomicLocation)) {
+                    return downsampledIntervals[i]
+                }
+            }
+        } else if (packedAlignmentsIndex < packedAlignmentRows.length) {
+            const alignmentRow = packedAlignmentRows[packedAlignmentsIndex];
+            const clicked = alignmentRow.alignments.filter(alignment => alignment.containsLocation(genomicLocation, showSoftClips));
+            if (clicked.length > 0) return clicked[0]
+        }
+
+        return undefined
+
+    };
+
+    /**
+     * Return the color for connectors in paired alignment view.   If explicitly set return that, otherwise return
+     * the alignment color, unless the color option can result in split colors (separte color for each mate).
+     *
+     * @param alignment
+     * @returns {string}
+     */
+    getConnectorColor(alignment) {
+
+        if (this.pairConnectorColor) {
+            return this.pairConnectorColor
+        }
+
+        switch (this.colorBy) {
+            case "strand":
+            case "firstOfPairStrand":
+            case "pairOrientation":
+            case "tag":
+                if (this.parent.color) {
+                    return (typeof this.parent.color === "function") ? this.parent.color(alignment) : this.parent.color
+                } else {
+                    return DEFAULT_CONNECTOR_COLOR
+                }
+            default:
+                return this.getAlignmentColor(alignment)
+
+        }
+    }
+
+    getAlignmentColor(alignment) {
+
+        let color = DEFAULT_ALIGNMENT_COLOR;   // The default color if nothing else applies
+        if (this.parent.color) {
+            color = (typeof this.parent.color === "function") ? this.parent.color(alignment) : this.parent.color;
+        } else {
+            color = DEFAULT_ALIGNMENT_COLOR;
+        }
+        const option = this.colorBy;
+        switch (option) {
+            case "strand":
+                color = alignment.strand ? this.posStrandColor : this.negStrandColor;
+                break
+
+            case "firstOfPairStrand":
+
+                if (alignment instanceof PairedAlignment) {
+                    color = alignment.firstOfPairStrand() ? this.posStrandColor : this.negStrandColor;
+                } else if (alignment.isPaired()) {
+
+                    if (alignment.isFirstOfPair()) {
+                        color = alignment.strand ? this.posStrandColor : this.negStrandColor;
+                    } else if (alignment.isSecondOfPair()) {
+                        color = alignment.strand ? this.negStrandColor : this.posStrandColor;
+                    } else {
+                        console.error("ERROR. Paired alignments are either first or second.");
+                    }
+                }
+                break
+
+            case "unexpectedPair":
+            case "pairOrientation":
+
+                if (this.pairOrientation && alignment.pairOrientation) {
+                    const oTypes = orientationTypes[this.pairOrientation];
+                    if (oTypes) {
+                        const pairColor = this.pairColors[oTypes[alignment.pairOrientation]];
+                        if (pairColor) {
+                            color = pairColor;
+                            break
+                        }
+                    }
+                }
+                if ("pairOrientation" === option) {
+                    break
+                }
+
+            case "tlen":
+            case "fragmentLength":
+
+                if (alignment.mate && alignment.isMateMapped()) {
+                    if (alignment.mate.chr !== alignment.chr) {
+                        color = getChrColor(alignment.mate.chr);
+                    } else if (this.parent.minTemplateLength && Math.abs(alignment.fragmentLength) < this.parent.minTemplateLength) {
+                        color = this.smallTLENColor;
+                    } else if (this.parent.maxTemplateLength && Math.abs(alignment.fragmentLength) > this.parent.maxTemplateLength) {
+                        color = this.largeTLENColor;
+                    }
+                }
+                break
+
+            case "tag":
+                const tagValue = alignment.tags()[this.colorByTag];
+                if (tagValue !== undefined) {
+                    if (this.bamColorTag === this.colorByTag) {
+                        // UCSC style color option
+                        color = "rgb(" + tagValue + ")";
+                    } else {
+
+                        if (!this.tagColors) {
+                            this.tagColors = new PaletteColorTable("Set1");
+                        }
+                        color = this.tagColors.getColor(tagValue);
+                    }
+                }
+                break
+        }
+
+        return color
+
+    }
+}
+
+function shadedBaseColor(qual, baseColor) {
+
+    const minQ = 5;   //prefs.getAsInt(PreferenceManager.SAM_BASE_QUALITY_MIN),
+    const maxQ = 20;  //prefs.getAsInt(PreferenceManager.SAM_BASE_QUALITY_MAX);
+
+    let alpha;
+    if (qual < minQ) {
+        alpha = 0.1;
+    } else {
+        alpha = Math.max(0.1, Math.min(1.0, 0.1 + 0.9 * (qual - minQ) / (maxQ - minQ)));
+    }
+    // Round alpha to nearest 0.1
+    alpha = Math.round(alpha * 10) / 10.0;
+
+    if (alpha < 1) {
+        baseColor = IGVColor.addAlpha(baseColor, alpha);
+    }
+    return baseColor
+}
+
+const orientationTypes = {
+
+    "fr": {
+        "F1R2": "LR",
+        "F2R1": "LR",
+        "F1F2": "LL",
+        "F2F1": "LL",
+        "R1R2": "RR",
+        "R2R1": "RR",
+        "R1F2": "RL",
+        "R2F1": "RL"
+    },
+
+    "rf": {
+        "R1F2": "LR",
+        "R2F1": "LR",
+        "R1R2": "LL",
+        "R2R1": "LL",
+        "F1F2": "RR",
+        "F2F1": "RR",
+        "F1R2": "RL",
+        "F2R1": "RL"
+    },
+
+    "ff": {
+        "F2F1": "LR",
+        "R1R2": "LR",
+        "F2R1": "LL",
+        "R1F2": "LL",
+        "R2F1": "RR",
+        "F1R2": "RR",
+        "R2R1": "RL",
+        "F1F2": "RL"
+    }
+};
+
+function getChrColor(chr) {
+    if (chrColorMap[chr]) {
+        return chrColorMap[chr]
+    } else if (chrColorMap["chr" + chr]) {
+        const color = chrColorMap["chr" + chr];
+        chrColorMap[chr] = color;
+        return color
+    } else {
+        const color = IGVColor.randomRGB(0, 255);
+        chrColorMap[chr] = color;
+        return color
+    }
+}
+
+const chrColorMap = {
+    "chrX": "rgb(204, 153, 0)",
+    "chrY": "rgb(153, 204, 0)",
+    "chrUn": "rgb(50, 50, 50)",
+    "chr1": "rgb(80, 80, 255)",
+    "chrI": "rgb(139, 155, 187)",
+    "chr2": "rgb(206, 61, 50)",
+    "chrII": "rgb(206, 61, 50)",
+    "chr2a": "rgb(216, 71, 60)",
+    "chr2b": "rgb(226, 81, 70)",
+    "chr3": "rgb(116, 155, 88)",
+    "chrIII": "rgb(116, 155, 88)",
+    "chr4": "rgb(240, 230, 133)",
+    "chrIV": "rgb(240, 230, 133)",
+    "chr5": "rgb(70, 105, 131)",
+    "chr6": "rgb(186, 99, 56)",
+    "chr7": "rgb(93, 177, 221)",
+    "chr8": "rgb(128, 34, 104)",
+    "chr9": "rgb(107, 215, 107)",
+    "chr10": "rgb(213, 149, 167)",
+    "chr11": "rgb(146, 72, 34)",
+    "chr12": "rgb(131, 123, 141)",
+    "chr13": "rgb(199, 81, 39)",
+    "chr14": "rgb(213, 143, 92)",
+    "chr15": "rgb(122, 101, 165)",
+    "chr16": "rgb(228, 175, 105)",
+    "chr17": "rgb(59, 27, 83)",
+    "chr18": "rgb(205, 222, 183)",
+    "chr19": "rgb(97, 42, 121)",
+    "chr20": "rgb(174, 31, 99)",
+    "chr21": "rgb(231, 199, 111)",
+    "chr22": "rgb(90, 101, 94)",
+    "chr23": "rgb(204, 153, 0)",
+    "chr24": "rgb(153, 204, 0)",
+    "chr25": "rgb(51, 204, 0)",
+    "chr26": "rgb(0, 204, 51)",
+    "chr27": "rgb(0, 204, 153)",
+    "chr28": "rgb(0, 153, 204)",
+    "chr29": "rgb(10, 71, 255)",
+    "chr30": "rgb(71, 117, 255)",
+    "chr31": "rgb(255, 194, 10)",
+    "chr32": "rgb(255, 209, 71)",
+    "chr33": "rgb(153, 0, 51)",
+    "chr34": "rgb(153, 26, 0)",
+    "chr35": "rgb(153, 102, 0)",
+    "chr36": "rgb(128, 153, 0)",
+    "chr37": "rgb(51, 153, 0)",
+    "chr38": "rgb(0, 153, 26)",
+    "chr39": "rgb(0, 153, 102)",
+    "chr40": "rgb(0, 128, 153)",
+    "chr41": "rgb(0, 51, 153)",
+    "chr42": "rgb(26, 0, 153)",
+    "chr43": "rgb(102, 0, 153)",
+    "chr44": "rgb(153, 0, 128)",
+    "chr45": "rgb(214, 0, 71)",
+    "chr46": "rgb(255, 20, 99)",
+    "chr47": "rgb(0, 214, 143)",
+    "chr48": "rgb(20, 255, 177)",
+};
+
+let timer;
+let currentViewport = undefined;
+const toolTipTimeout = 1e4;
+
+class RulerViewport extends TrackViewport {
+
+    constructor(trackView, $viewportColumn, referenceFrame, width) {
+        super(trackView, $viewportColumn, referenceFrame, width);
+    }
+
+    get contentDiv() {
+        return this.$viewport.get(0)
+    }
+
+    initializationHelper() {
+
+        this.$multiLocusCloseButton = $$1('<div>', {class: 'igv-multi-locus-close-button'});
+        this.$viewport.append(this.$multiLocusCloseButton);
+        this.$multiLocusCloseButton.get(0).appendChild(icons$1.createIcon("times-circle"));
+
+        this.$multiLocusCloseButton.click(() => {
+            this.browser.removeMultiLocusPanel(this.referenceFrame);
+        });
+
+        this.$rulerLabel = $$1('<div>', {class: 'igv-multi-locus-ruler-label'});
+        this.$viewport.append(this.$rulerLabel);
+
+        let div;
+        div = document.createElement('div');
+        this.$rulerLabel.append($$1(div));
+
+        this.$rulerLabel.get(0).addEventListener('click', async event => {
+            event.stopPropagation();
+            await this.browser.gotoMultilocusPanel(this.referenceFrame);
+        });
+
+        this.$tooltip = $$1('<div>', {class: 'igv-ruler-tooltip'});
+        this.$tooltip.height(this.$viewport.height());
+
+        this.$viewport.append(this.$tooltip);
+
+        this.$tooltipContent = $$1('<div>');
+        this.$tooltip.append(this.$tooltipContent);
+
+        this.rulerSweeper = new RulerSweeper(this, this.$viewport.get(0).parentElement, this.browser, this.referenceFrame);
+
+        this.attachMouseHandlers(GenomeUtils.isWholeGenomeView(this.referenceFrame.chr));
+
+        this.$tooltip.hide();
+
+        this.dismissLocusLabel();
+    }
+
+    presentLocusLabel(viewportWidth) {
+
+        this.$multiLocusCloseButton.show();
+
+        this.$rulerLabel.show();
+        this.$rulerLabel.get(0).style.backgroundColor = getChrColor(this.referenceFrame.chr);
+
+        const textDiv = this.$rulerLabel.get(0).querySelector('div');
+
+        const { width } = this.$rulerLabel.get(0).getBoundingClientRect();
+
+        textDiv.innerHTML = `${ this.referenceFrame.getMultiLocusLabel(viewportWidth) }`;
+        const { width:textDivWidth } = textDiv.getBoundingClientRect();
+
+        if (textDivWidth/width > 0.5) {
+            textDiv.innerHTML = `${ this.referenceFrame.getMultiLocusLabelBPLengthOnly(viewportWidth) }`;
+        }
+
+        //console.log(`${ Date.now() } textDiv ${ StringUtils.numberFormatter(Math.floor(textDivWidth)) }`)
+
+    }
+
+    // Use in conjuction with .igv-multi-locus-ruler-label-square-dot css class (_dom-misc.scss)
+    dismissLocusLabel() {
+        this.$rulerLabel.hide();
+        this.$multiLocusCloseButton.hide();
+    }
+
+    attachMouseHandlers(isWholeGenomeView) {
+
+        this.namespace = `.ruler_track_viewport_${this.browser.referenceFrameList.indexOf(this.referenceFrame)}`;
+
+        this.$viewport.off(this.namespace);
+
+        if (true === isWholeGenomeView) {
+
+            const index = this.browser.referenceFrameList.indexOf(this.referenceFrame);
+
+            const click = `click${this.namespace}`;
+            this.$viewport.on(click, (e) => {
+
+                const {x: pixel} = domUtils.translateMouseCoordinates(e, this.$viewport.get(0));
+                const bp = Math.round(this.referenceFrame.start + this.referenceFrame.toBP(pixel));
+
+                let searchString;
+
+                const {chr} = this.browser.genome.getChromosomeCoordinate(bp);
+
+                if (1 === this.browser.referenceFrameList.length) {
+                    searchString = chr;
+                } else {
+
+                    let loci = this.browser.referenceFrameList.map(({locusSearchString}) => locusSearchString);
+
+                    loci[index] = chr;
+
+                    searchString = loci.join(' ');
+                }
+
+                this.browser.search(searchString);
+            });
+
+            this.$viewport.get(0).style.cursor = 'pointer';
+        } else {
+            this.$viewport.get(0).style.cursor = 'default';
+        }
+
+    }
+
+    mouseMove(event) {
+
+        if (true === this.browser.cursorGuideVisible) {
+
+            if (undefined === currentViewport) {
+                currentViewport = this;
+                this.$tooltip.show();
+            } else if (currentViewport.guid !== this.guid) {
+                if (currentViewport.$tooltip) {
+                    currentViewport.$tooltip.hide();
+                }
+                this.$tooltip.show();
+                currentViewport = this;
+            } else {
+                this.$tooltip.show();
+            }
+
+            const isWholeGenome = (this.browser.isMultiLocusWholeGenomeView() || GenomeUtils.isWholeGenomeView(this.referenceFrame.chr));
+
+            if (isWholeGenome) {
+                this.$tooltip.hide();
+                return
+            }
+
+            const {x} = domUtils.translateMouseCoordinates(event, this.$viewport.get(0));
+            const {start, bpPerPixel} = this.referenceFrame;
+            const bp = Math.round(0.5 + start + Math.max(0, x) * bpPerPixel);
+
+            this.$tooltipContent.text(numberFormatter$1(bp));
+
+            const {width: ww} = this.$tooltipContent.get(0).getBoundingClientRect();
+            const {width: w} = this.$viewport.get(0).getBoundingClientRect();
+
+            this.$tooltip.css({left: `${IGVMath.clamp(x, 0, w - ww)}px`});
+
+            // hide tooltip when movement stops
+            clearTimeout(timer);
+            timer = setTimeout(() => {
+                if (this.$tooltip) this.$tooltip.hide();
+            }, toolTipTimeout);
+
+        }
+
+    }
+
+    startSpinner() {
+    }
+
+    stopSpinner() {
+    }
+
+    dispose() {
+        this.rulerSweeper.dispose();
+        super.dispose();
+    }
+
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class IdeogramViewport extends TrackViewport {
+
+    constructor(trackView, viewportColumn, referenceFrame, width) {
+        super(trackView, viewportColumn, referenceFrame, width);
+    }
+
+    initializationHelper() {
+
+        this.canvas = document.createElement('canvas');
+        this.canvas.className = 'igv-ideogram-canvas';
+        //this.$content.append($(this.canvas))
+        this.$viewport.append($$1(this.canvas));
+        this.ideogram_ctx = this.canvas.getContext('2d');
+
+        this.addMouseHandlers();
+    }
+
+    addMouseHandlers() {
+        this.addViewportClickHandler(this.$viewport.get(0));
+    }
+
+    addViewportClickHandler(viewport) {
+
+        this.boundClickHandler = clickHandler.bind(this);
+        viewport.addEventListener('click', this.boundClickHandler);
+
+        function clickHandler(event) {
+
+            const {xNormalized, width} = domUtils.translateMouseCoordinates(event, this.ideogram_ctx.canvas);
+            const {bpLength} = this.browser.genome.getChromosome(this.referenceFrame.chr);
+            const locusLength = this.referenceFrame.bpPerPixel * width;
+            const chrCoveragePercentage = locusLength / bpLength;
+
+            let xPercentage = xNormalized;
+            if (xPercentage - (chrCoveragePercentage / 2.0) < 0) {
+                xPercentage = chrCoveragePercentage / 2.0;
+            }
+
+            if (xPercentage + (chrCoveragePercentage / 2.0) > 1.0) {
+                xPercentage = 1.0 - chrCoveragePercentage / 2.0;
+            }
+
+            const ss = Math.round((xPercentage - (chrCoveragePercentage / 2.0)) * bpLength);
+            const ee = Math.round((xPercentage + (chrCoveragePercentage / 2.0)) * bpLength);
+
+            this.referenceFrame.start = ss;
+            this.referenceFrame.end = ee;
+            this.referenceFrame.bpPerPixel = (ee - ss) / width;
+
+            this.browser.updateViews(this.referenceFrame, this.browser.trackViews, true);
+
+        }
+
+    }
+
+    setWidth(width) {
+        this.$viewport.width(width);
+    }
+
+    drawSVGWithContext(context, width, height, id, x, y, yClipOffset) {
+
+        context.saveWithTranslationAndClipRect(id, x, y, width, height, yClipOffset);
+
+        this.trackView.track.draw({
+            context,
+            referenceFrame: this.referenceFrame,
+            pixelWidth: width,
+            pixelHeight: height
+        });
+
+        context.restore();
+    }
+
+    repaint() {
+        this.draw({referenceFrame: this.referenceFrame});
+    }
+
+    draw({referenceFrame}) {
+
+        IGVGraphics.configureHighDPICanvas(this.ideogram_ctx, this.$viewport.width(), this.$viewport.height());
+
+        this.trackView.track.draw({
+            context: this.ideogram_ctx,
+            referenceFrame,
+            pixelWidth: this.$viewport.width(),
+            pixelHeight: this.$viewport.height()
+        });
+    }
+
+    startSpinner() {
+    }
+
+    stopSpinner() {
+    }
+
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+function createViewport(trackView, column, referenceFrame, width) {
+
+    if ('ruler' === trackView.track.type) {
+        return new RulerViewport(trackView, column, referenceFrame, width)
+    } else if ('ideogram' === trackView.track.id) {
+        return new IdeogramViewport(trackView, column, referenceFrame, width)
+    } else {
+        const viewportObject = new TrackViewport(trackView, column, referenceFrame, width);
+
+        // if ('sequence' === trackView.track.type) {
+        //     viewportObject.$viewport.get(0).style.marginTop = '0px'
+        // }
+
+        return viewportObject
+    }
+}
+
+const maxFontSize = 10;
+
+const fontConfigureTemplate =
+    {
+        // font: '2pt sans-serif',
+        textAlign: 'start',
+        textBaseline: 'bottom',
+        strokeStyle: 'black',
+        fillStyle: 'black'
+    };
+
+class SampleNameViewport {
+
+    constructor(trackView, column, unused, width) {
+
+        this.guid = domUtils.guid();
+        this.trackView = trackView;
+
+        this.browser = trackView.browser;
+
+        this.viewport = domUtils.div({class: 'igv-viewport'});
+
+        column.appendChild(this.viewport);
+
+        if (trackView.track.height) {
+            this.viewport.style.height = `${trackView.track.height}px`;
+        }
+
+        this.canvas = document.createElement('canvas');
+        this.viewport.appendChild(this.canvas);
+        this.ctx = this.canvas.getContext("2d");
+
+        this.trackScrollDelta = 0;
+
+        this.contentTop = 0;
+
+        this.setWidth(width);
+
+        if (false === this.browser.showSampleNames) {
+            this.hide();
+        }
+
+        this.addMouseHandlers();
+    }
+
+    checkCanvas() {
+
+        const dpi = window.devicePixelRatio;
+        const requiredHeight = this.viewport.clientHeight;
+        const requiredWidth = this.browser.sampleNameViewportWidth;
+
+        if (this.canvas.width !== requiredWidth * dpi || this.canvas.height !== requiredHeight * dpi) {
+            const canvas = this.canvas;
+            canvas.width = requiredWidth * dpi;
+            canvas.height = requiredHeight * dpi;
+            canvas.style.width = `${requiredWidth}px`;
+            canvas.style.height = `${requiredHeight}px`;
+            this.ctx = this.canvas.getContext("2d");
+            this.ctx.scale(dpi, dpi);
+        }
+
+    }
+
+    setTop(contentTop) {
+
+        if (typeof this.trackView.track.getSamples === 'function') {
+            this.contentTop = contentTop;
+            const samples = this.trackView.track.getSamples();
+            this.repaint(samples);
+        }
+
+    }
+
+    setWidth(width) {
+        this.viewport.innerWidth = width;
+        this.checkCanvas();
+    }
+
+    show() {
+        this.viewport.style.display = 'block';
+    }
+
+    hide() {
+        this.viewport.style.display = 'none';
+    }
+
+    async repaint(samples) {
+
+        this.checkCanvas();
+        this.draw({context: this.ctx, samples});
+    }
+
+    draw({context, samples}) {
+
+        if (!samples || samples.names.length === 0/* || samples.height < 1*/) {
+            return
+        }
+
+        configureFont(context, fontConfigureTemplate, samples.height);
+        const sampleNameXShim = 4;
+
+        context.clearRect(0, 0, context.canvas.width, context.canvas.height);
+
+        context.fillStyle = appleCrayonRGB('lead');
+
+        const viewportHeight = this.viewport.getBoundingClientRect().height;
+        let y = (samples.yOffset || 0) + this.contentTop;    // contentTop will always be a negative number (top relative to viewport)
+
+        for (let name of samples.names) {
+            if (y > viewportHeight) {
+                break
+            }
+            if (y + samples.height > 0) {
+                const text = name;
+                const yFont = getYFont(context, text, y, samples.height);
+                context.fillText(text, sampleNameXShim, yFont);
+
+            }
+            y += samples.height;
+        }
+    }
+
+    renderSVGContext(context, {deltaX, deltaY}) {
+
+        if (typeof this.trackView.track.getSamples === 'function') {
+
+            const samples = this.trackView.track.getSamples();
+
+            const yScrollDelta = 0;   // This is not relevant, scrolling is handled in "draw"
+
+            const {width, height} = this.viewport.getBoundingClientRect();
+
+            const str = (this.trackView.track.name || this.trackView.track.id).replace(/\W/g, '');
+            const id = `${str}_sample_names_guid_${domUtils.guid()}`;
+
+            context.saveWithTranslationAndClipRect(id, deltaX, deltaY + yScrollDelta, width, height, -yScrollDelta);
+
+            this.draw({context, samples});
+
+            context.restore();
+        }
+    }
+
+    addMouseHandlers() {
+        this.addViewportContextMenuHandler(this.viewport);
+    }
+
+    removeMouseHandlers() {
+        this.removeViewportContextMenuHandler(this.viewport);
+    }
+
+    addViewportContextMenuHandler(viewport) {
+        this.boundContextMenuHandler = contextMenuHandler.bind(this);
+        viewport.addEventListener('contextmenu', this.boundContextMenuHandler);
+
+        function contextMenuHandler(event) {
+
+            event.preventDefault();
+            event.stopPropagation();
+
+            const config =
+                {
+                    label: 'Name Panel Width',
+                    value: this.browser.sampleNameViewportWidth,
+                    callback: newWidth => {
+                        this.browser.sampleNameViewportWidth = parseInt(newWidth);
+                        for (let {sampleNameViewport} of this.browser.trackViews) {
+                            sampleNameViewport.setWidth(this.browser.sampleNameViewportWidth);
+                        }
+                        this.browser.layoutChange();
+                    }
+                };
+
+            this.browser.inputDialog.present(config, event);
+        }
+
+    }
+
+    removeViewportContextMenuHandler(viewport) {
+        viewport.removeEventListener('contextmenu', this.boundContextMenuHandler);
+    }
+
+    dispose() {
+        this.removeMouseHandlers();
+        this.viewport.remove();
+    }
+}
+
+function getYFont(context, text, y, height) {
+    return y + height - getSampleNameYShim(context, text, height)
+}
+
+function getSampleNameYShim(context, text, h) {
+    const {actualBoundingBoxAscent, actualBoundingBoxDescent} = context.measureText(text);
+    return (h - (actualBoundingBoxAscent + actualBoundingBoxDescent)) / 2
+}
+
+function configureFont(ctx, {textAlign, textBaseline, strokeStyle, fillStyle}, sampleHeight) {
+    const pixels = Math.min(sampleHeight, maxFontSize);
+    ctx.font = `${pixels}px sans-serif`;
+    ctx.textAlign = textAlign;
+    ctx.textBaseline = textBaseline;
+    ctx.fillStyle = fillStyle;
+}
+
+const MenuPopup = function (parent) {
+
+    this.popover = domUtils.div({class: 'igv-menu-popup'});
+    parent.appendChild(this.popover);
+
+    const header = domUtils.div({class: 'igv-menu-popup-header'});
+    this.popover.appendChild(header);
+
+    uiUtils.attachDialogCloseHandlerWithParent(header, () => this.hide());
+
+    this.popoverContent = domUtils.div();
+    this.popover.appendChild(this.popoverContent);
+
+    makeDraggable(this.popover, header);
+
+    header.addEventListener('click', e => {
+        e.stopPropagation();
+        e.preventDefault();
+        // absorb click to prevent it leaking through to parent DOM element
+    });
+
+    this.hide();
+
+};
+
+MenuPopup.prototype.hide = function () {
+    this.popover.style.display = 'none';
+};
+
+MenuPopup.prototype.presentMenuList = function (menuList) {
+
+    hideAllMenuPopups();
+
+    if (menuList.length > 0) {
+
+        this.popoverContent.innerHTML = '';
+
+        menuList = MenuUtils.trackMenuItemListHelper(menuList, this);
+
+        for (let item of menuList) {
+
+            if (item.init) {
+                item.init();
+            }
+
+            let $e = item.object;
+            if (0 === menuList.indexOf(item)) {
+                $e.removeClass('igv-track-menu-border-top');
+            }
+
+            if ($e.hasClass('igv-track-menu-border-top') || $e.hasClass('igv-menu-popup-check-container')) ; else if ($e.is('div')) {
+                $e.addClass('igv-menu-popup-shim');
+            }
+
+            this.popoverContent.appendChild($e.get(0));
+
+        }
+
+        // NOTE: style.display most NOT be 'none' when calculating width. a display = 'none' will always
+        //       yield a width of zero (0).
+        this.popover.style.display = 'flex';
+
+        const {width} = this.popover.getBoundingClientRect();
+
+        this.popover.style.left = `${-width}px`;
+        this.popover.style.top = `${0}px`;
+
+    }
+};
+
+MenuPopup.prototype.presentTrackContextMenu = function (e, menuItems) {
+
+    this.popoverContent.innerHTML = '';
+
+    const menuElements = createMenuElements(menuItems, this.popover);
+    for (let {el} of menuElements) {
+        this.popoverContent.appendChild(el);
+    }
+
+    present(e, this.popover);
+
+};
+
+MenuPopup.prototype.dispose = function () {
+
+    this.popoverContent.innerHTML = '';
+    this.popover.innerHTML = '';
+
+    Object.keys(this).forEach(function (key) {
+        this[key] = undefined;
+    });
+};
+
+function createMenuElements(itemList, popover) {
+
+    return itemList.map(item => {
+
+        let el;
+
+        if (typeof item === 'string' && '<hr/>' === item) {
+            el = document.createElement('hr');
+        } else if (typeof item === 'string') {
+            el = domUtils.div({class: 'context-menu'});
+            el.innerHTML = item;
+        } else if (typeof item === 'Node') {
+            el = item;
+        } else {
+            if (typeof item.init === 'function') {
+                item.init();
+            }
+
+            if ("checkbox" === item.type) {
+                el = createCheckbox("Show all bases", item.value);
+            } else if ("color" === item.type) {
+
+                const colorPicker = new GenericColorPicker({parent: popover.parentElement, width: 364});
+                colorPicker.configure(undefined, {color: color => item.click(color)});
+
+                el = domUtils.div({class: 'context-menu'});
+                if (typeof item.label === 'string') {
+                    el.innerHTML = item.label;
+                }
+                const clickHandler = e => {
+                    colorPicker.show();
+                    domUtils.hide(popover);
+                    e.preventDefault();
+                    e.stopPropagation();
+                };
+                el.addEventListener('click', clickHandler);
+                el.addEventListener('touchend', clickHandler);
+                el.addEventListener('mouseup', function (e) {
+                    e.preventDefault();
+                    e.stopPropagation();
+                });
+            } else {
+                el = domUtils.div({class: 'context-menu'});
+                if (typeof item.label === 'string') {
+                    el.innerHTML = item.label;
+                }
+            }
+
+            if (item.click && "color" !== item.type) {
+                el.addEventListener('click', handleClick);
+                el.addEventListener('touchend', handleClick);
+                el.addEventListener('mouseup', function (e) {
+                    e.preventDefault();
+                    e.stopPropagation();
+                });
+
+                // eslint-disable-next-line no-inner-declarations
+                function handleClick(e) {
+                    item.click();
+                    domUtils.hide(popover);
+                    e.preventDefault();
+                    e.stopPropagation();
+                }
+            }
+        }
+
+        return {el, init: item.init}
+    })
+
+}
+
+function present(e, popover) {
+
+    // NOTE: style.display most NOT be 'none' when calculating width. a display = 'none' will always
+    //       yield a width of zero (0).
+    popover.style.display = 'flex';
+
+    const {x, y} = domUtils.translateMouseCoordinates(e, popover.parentNode);
+    const {width} = popover.getBoundingClientRect();
+    const xmax = x + width;
+
+    const {width: parentWidth} = popover.parentNode.getBoundingClientRect();
+
+    popover.style.left = `${xmax > parentWidth ? (x - (xmax - parentWidth)) : x}px`;
+    popover.style.top = `${y}px`;
+
+}
+
+const hideAllMenuPopups = () => {
+
+    const menus = document.querySelectorAll('.igv-menu-popup');
+    for (let i = 0; i < menus.length; i++) {
+        menus[i].style.display = 'none';
+    }
+
+};
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const igv_axis_column_width = 50;
+const scrollbarExclusionTypes = new Set(['ruler', 'ideogram']);
+const colorPickerExclusionTypes = new Set(['ruler', 'sequence', 'ideogram']);
+
+class TrackView {
+
+    constructor(browser, columnContainer, track) {
+        this.browser = browser;
+        this.track = track;
+        track.trackView = this;
+        this.addDOMToColumnContainer(browser, columnContainer, browser.referenceFrameList);
+    }
+
+    /**
+     * Start a spinner for the track on any of its viewports.  In practice this is called during initialization
+     * when there is only one.
+     */
+    startSpinner() {
+        if (this.viewports && this.viewports.length > 0) {
+            this.viewports[0].startSpinner();
+        }
+    }
+
+    stopSpinner() {
+        if (this.viewports && this.viewports.length > 0) {
+            this.viewports[0].stopSpinner();
+        }
+    }
+
+    addDOMToColumnContainer(browser, columnContainer, referenceFrameList) {
+
+        // Axis
+        this.axis = this.createAxis(browser, this.track);
+
+        // Create a viewport for each reference frame
+        this.viewports = [];
+        const viewportWidth = browser.calculateViewportWidth(referenceFrameList.length);
+        const viewportColumns = columnContainer.querySelectorAll('.igv-column');
+        for (let i = 0; i < viewportColumns.length; i++) {
+            const viewport = createViewport(this, viewportColumns[i], referenceFrameList[i], viewportWidth);
+            this.viewports.push(viewport);
+        }
+
+        // SampleName Viewport
+        this.sampleNameViewport = new SampleNameViewport(this, browser.columnContainer.querySelector('.igv-sample-name-column'), undefined, browser.sampleNameViewportWidth);
+
+        // Track Scrollbar
+        this.createTrackScrollbar(browser);
+
+        // Track Drag
+        this.createTrackDragHandle(browser);
+
+        // Track Gear
+        this.createTrackGearPopup(browser);
+
+    }
+
+    createAxis(browser, track) {
+
+        const axis = domUtils.div();
+        browser.columnContainer.querySelector('.igv-axis-column').appendChild(axis);
+
+        axis.style.height = `${track.height}px`;
+
+        if (typeof track.paintAxis === 'function') {
+            if (track.dataRange) {
+                axis.addEventListener('click', () => {
+                    browser.dataRangeDialog.configure(this);
+                    browser.dataRangeDialog.present($$1(browser.columnContainer));
+                });
+            }
+
+
+            const {width, height} = axis.getBoundingClientRect();
+            this.axisCanvas = document.createElement('canvas');
+            this.axisCanvas.style.width = `${width}px`;
+            this.axisCanvas.style.height = `${height}px`;
+            axis.appendChild(this.axisCanvas);
+        }
+
+        return axis
+
+    }
+
+    resizeAxisCanvas(width, height) {
+
+        this.axis.style.width = `${width}px`;
+        this.axis.style.height = `${height}px`;
+
+        if (typeof this.track.paintAxis === 'function') {
+            // Size the canvas in CSS (logical) pixels.  The buffer size will be set when painted.
+            this.axisCanvas.style.width = `${width}px`;
+            this.axisCanvas.style.height = `${height}px`;
+
+        }
+    }
+
+    removeDOMFromColumnContainer() {
+
+        // Axis
+        if (this.boundAxisClickHander) {
+            this.removeAxisEventListener(this.axis);
+        }
+        this.axis.remove();
+
+        // Track Viewports
+        for (let viewport of this.viewports) {
+            viewport.$viewport.remove();
+        }
+
+        // SampleName Viewport
+        this.sampleNameViewport.dispose();
+
+        // empty trackScrollbar Column
+        this.removeTrackScrollMouseHandlers();
+        this.outerScroll.remove();
+
+        // empty trackDrag Column
+        this.removeTrackDragMouseHandlers();
+        this.dragHandle.remove();
+
+        // empty trackGear Column
+        this.removeTrackGearMouseHandlers();
+        this.gearContainer.remove();
+
+    }
+
+    renderSVGContext(context, {deltaX, deltaY}) {
+
+        renderSVGAxis(context, this.track, this.axisCanvas, deltaX, deltaY);
+
+        const {width: axisWidth} = this.axis.getBoundingClientRect();
+
+        const {y} = this.viewports[0].$viewport.get(0).getBoundingClientRect();
+
+        let delta =
+            {
+                deltaX: axisWidth + deltaX,
+                deltaY: y + deltaY
+            };
+
+        for (let viewport of this.viewports) {
+            viewport.renderSVGContext(context, delta);
+            const {width} = viewport.$viewport.get(0).getBoundingClientRect();
+            delta.deltaX += width;
+        }
+        
+        if (true === this.browser.showSampleNames) {
+            this.sampleNameViewport.renderSVGContext(context, delta);
+        }
+    }
+
+    dataRange() {
+        return this.track.dataRange ? this.track.dataRange : undefined
+    }
+
+    setDataRange(min, max) {
+        if (min !== undefined) {
+            this.track.dataRange.min = min;
+        }
+        if (max !== undefined) {
+            this.track.dataRange.max = max;
+        }
+        this.track.autoscale = false;
+        this.repaintViews();
+    }
+
+    presentColorPicker(key) {
+
+        if (false === colorPickerExclusionTypes.has(this.track.type)) {
+
+            const trackColors = [];
+            const color = this.track.color || this.track.defaultColor;
+            if (isString$2(color)) {
+                trackColors.push(color);
+            }
+            if (this.track.altColor && isString$2(this.track.altColor)) {
+                trackColors.push(this.track.altColor);
+            }
+            const defaultColors = trackColors.map(c => c.startsWith("#") ? c : c.startsWith("rgb(") ? IGVColor.rgbToHex(c) : IGVColor.colorNameToHex(c));
+            const colorHandlers =
+                {
+                    color: color => {
+                        this.track.color = color;
+                        this.repaintViews();
+                    },
+                    altColor: color => {
+                        this.track.altColor = color;
+                        this.repaintViews();
+                    }
+
+                };
+            this.browser.genericColorPicker.configure(defaultColors, colorHandlers);
+            this.browser.genericColorPicker.setActiveColorHandler(key);
+            this.browser.genericColorPicker.show();
+        }
+
+    }
+
+    setTrackHeight(newHeight, force) {
+
+        if (!force) {
+            if (this.track.minHeight) {
+                newHeight = Math.max(this.track.minHeight, newHeight);
+            }
+            if (this.track.maxHeight) {
+                newHeight = Math.min(this.track.maxHeight, newHeight);
+            }
+        }
+
+        this.track.height = newHeight;
+
+        this.resizeAxisCanvas(this.axis.clientWidth, this.track.height);
+
+        if (typeof this.track.paintAxis === 'function') {
+            this.paintAxis();
+        }
+
+        for (let {$viewport} of this.viewports) {
+            $viewport.height(newHeight);
+        }
+
+        this.sampleNameViewport.viewport.style.height = `${newHeight}px`;
+
+        // If the track does not manage its own content height set it equal to the viewport height here
+        if (typeof this.track.computePixelHeight !== "function") {
+            for (let vp of this.viewports) {
+                vp.setContentHeight(newHeight);
+            }
+        }
+
+        this.repaintViews();
+
+        if (false === scrollbarExclusionTypes.has(this.track.type)) {
+            this.updateScrollbar();
+        }
+
+        this.dragHandle.style.height = `${newHeight}px`;
+        this.gearContainer.style.height = `${newHeight}px`;
+
+    }
+
+    updateScrollbar() {
+
+        const viewportHeight = this.viewports[0].$viewport.height();
+        this.outerScroll.style.height = `${viewportHeight}px`;
+
+        const viewportContentHeight = this.maxViewportContentHeight();
+        const innerScrollHeight = Math.round((viewportHeight / viewportContentHeight) * viewportHeight);
+
+        if (viewportContentHeight > viewportHeight) {
+            this.innerScroll.style.display = 'block';
+            this.innerScroll.style.height = `${innerScrollHeight}px`;
+        } else {
+            this.innerScroll.style.display = 'none';
+        }
+    }
+
+    moveScroller(delta) {
+
+        const y = $$1(this.innerScroll).position().top + delta;
+        const top = Math.min(Math.max(0, y), this.outerScroll.clientHeight - this.innerScroll.clientHeight);
+        $$1(this.innerScroll).css('top', `${top}px`);
+
+        const contentHeight = this.maxViewportContentHeight();
+        const contentTop = -Math.round(top * (contentHeight / this.viewports[0].$viewport.height()));
+
+        for (let viewport of this.viewports) {
+            viewport.setTop(contentTop);
+        }
+
+        this.sampleNameViewport.trackScrollDelta = delta;
+        this.sampleNameViewport.setTop(contentTop);
+
+    }
+
+    isLoading() {
+        for (let viewport of this.viewports) {
+            if (viewport.isLoading()) return true
+        }
+    }
+
+    /**
+     * Repaint all viewports without loading any new data.   Use this for events that change visual aspect of data,
+     * e.g. color, sort order, etc, but do not change the genomic state.
+     */
+    repaintViews() {
+
+        for (let viewport of this.viewports) {
+            if (viewport.isVisible()) {
+                viewport.repaint();
+            }
+        }
+
+        if (typeof this.track.paintAxis === 'function') {
+            this.paintAxis();
+        }
+
+        // Repaint sample names last
+        this.repaintSamples();
+    }
+
+    repaintSamples() {
+
+        if (typeof this.track.getSamples === 'function') {
+            const samples = this.track.getSamples();
+            this.sampleNameViewport.repaint(samples);
+        }
+    }
+
+    // track labels
+    setTrackLabelName(name) {
+        this.viewports.forEach(viewport => viewport.setTrackLabel(name));
+    }
+
+    /**
+     * Called in response to a window resize event, change in # of multilocus panels, or other event that changes
+     * the width of the track view.
+     *
+     * @param viewportWidth  The width of each viewport in this track view.
+     */
+    resize(viewportWidth) {
+        for (let viewport of this.viewports) {
+            viewport.setWidth(viewportWidth);
+        }
+    }
+
+    /**
+     * Update viewports to reflect current genomic state, possibly loading additional data.
+     *
+     * @param force - if true, force a repaint even if no new data is loaded
+     * @returns {Promise<void>}
+     */
+    async updateViews() {
+
+        if (!(this.browser && this.browser.referenceFrameList)) return
+
+        const visibleViewports = this.viewports.filter(viewport => viewport.isVisible());
+
+        // Shift viewports left/right to current genomic state (pans canvas)
+        visibleViewports.forEach(viewport => viewport.shift());
+
+        // If dragging (panning) return
+        if (this.browser.dragObject) {
+            return
+        }
+
+        // Filter zoomed out views.  This has the side effect or turning off or no the zoomed out notice
+        const viewportsToRepaint = visibleViewports.filter(vp => vp.needsRepaint()).filter(viewport => viewport.checkZoomIn());
+
+        // Get viewports that require a data load
+        const viewportsToReload = viewportsToRepaint.filter(viewport => viewport.needsReload());
+
+        // Trigger viewport to load features needed to cover current genomic range
+        // NOTE: these must be loaded synchronously, do not user Promise.all,  not all file readers are thread safe
+        for (let viewport of viewportsToReload) {
+            await viewport.loadFeatures();
+        }
+
+        if (this.disposed) return   // Track was removed during load
+
+        // Special case for variant tracks in multilocus view.  The # of rows to allocate to the variant (site)
+        // section depends on data from all the views.  We only need to adjust this however if any data was loaded
+        // (i.e. reloadableViewports.length > 0)
+        if (this.track && typeof this.track.variantRowCount === 'function' && viewportsToReload.length > 0) {
+            let maxRow = 0;
+            for (let viewport of this.viewports) {
+                if (viewport.featureCache && viewport.featureCache.features) {
+                    maxRow = Math.max(maxRow, viewport.featureCache.features.reduce((a, f) => Math.max(a, f.row || 0), 0));
+                }
+            }
+            const current = this.track.nVariantRows;
+            if (current !== maxRow + 1) {
+                this.track.variantRowCount(maxRow + 1);
+                for (let viewport of this.viewports) {
+                    viewport.checkContentHeight();
+                }
+            }
+        }
+
+        if (this.track.autoscale) {
+            let allFeatures = [];
+            for (let visibleViewport of visibleViewports) {
+                const referenceFrame = visibleViewport.referenceFrame;
+                const start = referenceFrame.start;
+                const end = start + referenceFrame.toBP(visibleViewport.getWidth());
+                if (visibleViewport.featureCache && visibleViewport.featureCache.features) {
+                    // If the "features" object has a getMax function use it.  Currently only alignmentContainer implements this, for coverage.
+                    if (typeof visibleViewport.featureCache.features.getMax === 'function') {
+                        const max = visibleViewport.featureCache.features.getMax(start, end);
+                        allFeatures.push({value: max});
+                    } else {
+                        const viewFeatures = FeatureUtils.findOverlapping(visibleViewport.featureCache.features, start, end);
+                        for (let f of viewFeatures) {
+                            allFeatures.push(f);
+                        }
+                    }
+                }
+            }
+            if (typeof this.track.doAutoscale === 'function') {
+                this.track.dataRange = this.track.doAutoscale(allFeatures);
+            } else {
+                this.track.dataRange = doAutoscale(allFeatures);
+            }
+        }
+
+        const refreshView = (this.track.autoscale || this.track.autoscaleGroup || this.track.type === 'ruler');
+        for (let vp of visibleViewports) {
+            if (viewportsToRepaint.includes(vp)) {
+                vp.repaint();
+            } else if (refreshView) {
+                vp.refresh();
+            }
+        }
+
+        this.adjustTrackHeight();
+
+        // Repaint sample names last
+        this.repaintSamples();
+
+        this.updateRulerViewportLabels();
+    }
+
+    clearCachedFeatures() {
+        for (let viewport of this.viewports) {
+            viewport.clearCache();
+        }
+    }
+
+    updateRulerViewportLabels() {
+
+        const viewportWidth = this.browser.calculateViewportWidth(this.viewports.length);
+
+        for (let viewport of this.viewports) {
+            if ('ruler' === this.track.type) {
+                if (this.viewports.length > 1) {
+                    viewport.presentLocusLabel(viewportWidth);
+                } else {
+                    viewport.dismissLocusLabel();
+                }
+            }
+        }
+
+    }
+
+    /**
+     * Return a promise to get all in-view features across all viewports.  Used for group autoscaling.
+     */
+    async getInViewFeatures() {
+
+        if (!(this.browser && this.browser.referenceFrameList)) {
+            return []
+        }
+
+        let allFeatures = [];
+        const visibleViewports = this.viewports.filter(viewport => viewport.isVisible());
+        for (let vp of visibleViewports) {
+
+            const referenceFrame = vp.referenceFrame;
+            const {chr, start, bpPerPixel} = vp.referenceFrame;
+            const end = start + referenceFrame.toBP(vp.getWidth());
+            const needsReload = !vp.featureCache || !vp.featureCache.containsRange(chr, start, end, bpPerPixel);
+
+            if (needsReload) {
+                await vp.loadFeatures();
+            }
+            if (vp.featureCache && vp.featureCache.features) {
+
+                if (typeof vp.featureCache.features.getMax === 'function') {
+                    const max = vp.featureCache.features.getMax(start, end);
+                    allFeatures.push({value: max});
+                } else {
+                    const vpFeatures = typeof vp.featureCache.queryFeatures === 'function' ?
+                        vp.featureCache.queryFeatures(chr, start, end) :
+                        FeatureUtils.findOverlapping(vp.featureCache.features, start, end);
+                    allFeatures = allFeatures.concat(vpFeatures);
+                }
+            }
+        }
+        return allFeatures
+    }
+
+    checkContentHeight() {
+
+        for (let viewport of this.viewports) {
+            viewport.checkContentHeight();
+        }
+        this.adjustTrackHeight();
+
+    }
+
+    adjustTrackHeight() {
+
+        var contentHeight = this.maxViewportContentHeight();
+        if (this.track.autoHeight) {
+            this.setTrackHeight(contentHeight, false);
+        } else if (this.track.paintAxis) {   // Avoid duplication, paintAxis is already called in setTrackHeight
+            this.paintAxis();
+        }
+
+        if (false === scrollbarExclusionTypes.has(this.track.type)) {
+
+            // Adjust scrollbar, if needed, to insure content is in view
+            const currentTop = this.viewports[0].getContentTop();
+            const viewportHeight = this.viewports[0].$viewport.height();
+            const minTop = Math.min(0, viewportHeight - contentHeight);
+            if(currentTop < minTop) {
+                 for (let viewport of this.viewports) {
+                    viewport.setTop(minTop);
+                }
+            }
+            this.updateScrollbar();
+        }
+    }
+
+    createTrackScrollbar(browser) {
+
+        const outerScroll = domUtils.div();
+        browser.columnContainer.querySelector('.igv-scrollbar-column').appendChild(outerScroll);
+        outerScroll.style.height = `${this.track.height}px`;
+        this.outerScroll = outerScroll;
+
+        if (false === scrollbarExclusionTypes.has(this.track.type)) {
+            const innerScroll = domUtils.div();
+            outerScroll.appendChild(innerScroll);
+            this.innerScroll = innerScroll;
+
+            this.addTrackScrollMouseHandlers(browser);
+        }
+
+    }
+
+    createTrackDragHandle(browser) {
+
+        const className = 'ideogram' === this.track.type || 'ruler' === this.track.type ? 'igv-track-drag-shim' : 'igv-track-drag-handle';
+        this.dragHandle = domUtils.div({class: className});
+        browser.columnContainer.querySelector('.igv-track-drag-column').appendChild(this.dragHandle);
+        this.dragHandle.style.height = `${this.track.height}px`;
+
+        this.addTrackDragMouseHandlers(browser);
+
+    }
+
+    createTrackGearPopup(browser) {
+
+        this.gearContainer = domUtils.div();
+        browser.columnContainer.querySelector('.igv-gear-menu-column').appendChild(this.gearContainer);
+        this.gearContainer.style.height = `${this.track.height}px`;
+
+        if (true === this.track.ignoreTrackMenu) ; else {
+
+            this.gear = domUtils.div();
+            this.gearContainer.appendChild(this.gear);
+            this.gear.appendChild(icons$1.createIcon('cog'));
+
+            this.trackGearPopup = new MenuPopup(this.gear);
+
+            this.addTrackGearMouseHandlers();
+        }
+
+    }
+
+    addAxisEventListener(axis) {
+
+        this.boundAxisClickHander = axisClickHandler.bind(this);
+        axis.addEventListener('click', this.boundAxisClickHander);
+
+        function axisClickHandler(event) {
+            this.browser.dataRangeDialog.configure(this);
+            this.browser.dataRangeDialog.present($$1(this.browser.columnContainer));
+        }
+
+    }
+
+    removeAxisEventListener(axis) {
+        axis.removeEventListener('click', this.boundAxisClickHander);
+    }
+
+    addTrackScrollMouseHandlers(browser) {
+
+        // Mouse Down
+        this.boundTrackScrollMouseDownHandler = trackScrollMouseDownHandler.bind(this);
+        this.innerScroll.addEventListener('mousedown', this.boundTrackScrollMouseDownHandler);
+
+        function trackScrollMouseDownHandler(event) {
+
+            event.stopPropagation();
+
+            const {y} = domUtils.pageCoordinates(event);
+
+            $$1(this.innerScroll).data('yDown', y.toString());
+
+            this.boundColumnContainerMouseMoveHandler = columnContainerMouseMoveHandler.bind(this);
+            browser.columnContainer.addEventListener('mousemove', this.boundColumnContainerMouseMoveHandler);
+
+            function columnContainerMouseMoveHandler(event) {
+
+                event.stopPropagation();
+
+                const {y} = domUtils.pageCoordinates(event);
+
+                this.moveScroller(y - parseInt($$1(this.innerScroll).data('yDown')));
+
+                $$1(this.innerScroll).data('yDown', y.toString());
+
+            }
+        }
+
+        this.boundColumnContainerMouseUpHandler = columnContainerMouseUpHandler.bind(this);
+        browser.columnContainer.addEventListener('mouseup', this.boundColumnContainerMouseUpHandler);
+
+        function columnContainerMouseUpHandler(event) {
+            browser.columnContainer.removeEventListener('mousemove', this.boundColumnContainerMouseMoveHandler);
+        }
+
+    }
+
+    removeTrackScrollMouseHandlers() {
+        if (false === scrollbarExclusionTypes.has(this.track.type)) {
+            this.innerScroll.removeEventListener('mousedown', this.boundTrackScrollMouseDownHandler);
+            this.browser.columnContainer.removeEventListener('mouseup', this.boundColumnContainerMouseUpHandler);
+            this.browser.columnContainer.removeEventListener('mousemove', this.boundColumnContainerMouseMoveHandler);
+        }
+    }
+
+    addTrackDragMouseHandlers(browser) {
+
+        if ('ideogram' === this.track.id || 'ruler' === this.track.id) ; else {
+
+            let currentDragHandle = undefined;
+
+            // Mouse Down
+            this.boundTrackDragMouseDownHandler = trackDragMouseDownHandler.bind(this);
+            this.dragHandle.addEventListener('mousedown', this.boundTrackDragMouseDownHandler);
+
+            function trackDragMouseDownHandler(event) {
+
+                event.preventDefault();
+
+                currentDragHandle = event.target;
+                currentDragHandle.classList.add('igv-track-drag-handle-hover');
+
+                browser.startTrackDrag(this);
+
+            }
+
+            // Mouse Up
+            this.boundDocumentTrackDragMouseUpHandler = documentTrackDragMouseUpHandler.bind(this);
+            document.addEventListener('mouseup', this.boundDocumentTrackDragMouseUpHandler);
+
+            function documentTrackDragMouseUpHandler(event) {
+
+                browser.endTrackDrag();
+
+                if (currentDragHandle && event.target !== currentDragHandle) {
+                    currentDragHandle.classList.remove('igv-track-drag-handle-hover');
+                }
+
+                currentDragHandle = undefined;
+            }
+
+            // Mouse Enter
+            this.boundTrackDragMouseEnterHandler = trackDragMouseEnterHandler.bind(this);
+            this.dragHandle.addEventListener('mouseenter', this.boundTrackDragMouseEnterHandler);
+
+            function trackDragMouseEnterHandler(event) {
+                event.preventDefault();
+
+                if (undefined === currentDragHandle) {
+                    event.target.classList.add('igv-track-drag-handle-hover');
+                }
+
+                browser.updateTrackDrag(this);
+
+            }
+
+            // Mouse Out
+            this.dragHandle.addEventListener('mouseout', e => {
+                e.preventDefault();
+
+                if (undefined === currentDragHandle) {
+                    e.target.classList.remove('igv-track-drag-handle-hover');
+                }
+            });
+
+            this.boundTrackDragMouseOutHandler = trackDragMouseOutHandler.bind(this);
+            this.dragHandle.addEventListener('mouseout', this.boundTrackDragMouseOutHandler);
+
+            function trackDragMouseOutHandler(event) {
+                event.preventDefault();
+
+                if (undefined === currentDragHandle) {
+                    event.target.classList.remove('igv-track-drag-handle-hover');
+                }
+            }
+
+        }
+
+    }
+
+    removeTrackDragMouseHandlers() {
+
+        if ('ideogram' === this.track.id || 'ruler' === this.track.id) ; else {
+            this.dragHandle.removeEventListener('mousedown', this.boundTrackDragMouseDownHandler);
+            document.removeEventListener('mouseup', this.boundDocumentTrackDragMouseUpHandler);
+            this.dragHandle.removeEventListener('mouseup', this.boundTrackDragMouseEnterHandler);
+            this.dragHandle.removeEventListener('mouseout', this.boundTrackDragMouseOutHandler);
+        }
+
+    }
+
+    addTrackGearMouseHandlers() {
+        if (true === this.track.ignoreTrackMenu) ; else {
+
+            this.boundTrackGearClickHandler = trackGearClickHandler.bind(this);
+            this.gear.addEventListener('click', this.boundTrackGearClickHandler);
+
+            function trackGearClickHandler(event) {
+                event.preventDefault();
+                event.stopPropagation();
+                this.trackGearPopup.presentMenuList(MenuUtils.trackMenuItemList(this));
+            }
+
+        }
+
+    }
+
+    removeTrackGearMouseHandlers() {
+        if (true === this.track.ignoreTrackMenu) ; else {
+            this.gear.removeEventListener('click', this.boundTrackGearClickHandler);
+        }
+
+    }
+
+    /**
+     * Do any cleanup here
+     */
+    dispose() {
+
+        this.removeAxisEventListener(this.axis);
+        this.axis.remove();
+
+        for (let viewport of this.viewports) {
+            viewport.dispose();
+        }
+
+        this.sampleNameViewport.dispose();
+
+        this.removeTrackScrollMouseHandlers();
+        this.outerScroll.remove();
+
+        this.removeTrackDragMouseHandlers();
+        this.dragHandle.remove();
+
+        this.removeTrackGearMouseHandlers();
+        this.gearContainer.remove();
+
+        if (typeof this.track.dispose === "function") {
+            this.track.dispose();
+        }
+
+        for (let key of Object.keys(this)) {
+            this[key] = undefined;
+        }
+
+        if (this.alert) {
+            this.alert.container.remove();    // This is quite obviously a hack, need a "dispose" method on AlertDialog
+        }
+
+        this.disposed = true;
+    }
+
+    paintAxis() {
+
+        if (typeof this.track.paintAxis === 'function') {
+
+            // Set the canvas buffer size, this is the resolution it is drawn at.  This is done here in case the browser
+            // has been drug between screens at different dpi resolutions since the last repaint
+            const {width, height} = this.axisCanvas.getBoundingClientRect();
+            const dpi = window.devicePixelRatio || 1;
+            this.axisCanvas.height = dpi * height;
+            this.axisCanvas.width = dpi * width;
+
+            // Get a scaled context to draw aon
+            const axisCanvasContext = this.axisCanvas.getContext('2d');
+            axisCanvasContext.scale(dpi, dpi);
+
+            this.track.paintAxis(axisCanvasContext, width, height);
+        }
+    }
+
+    maxViewportContentHeight() {
+        return Math.max(this.viewports.map(viewport => viewport.getContentHeight()))
+    }
+
+}
+
+function renderSVGAxis(context, track, axisCanvas, deltaX, deltaY) {
+
+    if (typeof track.paintAxis === 'function') {
+
+        const {y, width, height} = axisCanvas.getBoundingClientRect();
+
+        const str = (track.name || track.id).replace(/\W/g, '');
+        const id = `${str}_axis_guid_${domUtils.guid()}`;
+
+        context.saveWithTranslationAndClipRect(id, deltaX, y + deltaY, width, height, 0);
+
+        track.paintAxis(context, width, height);
+
+        context.restore();
+    }
+
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const DEFAULT_COLOR$1 = 'rgb(150, 150, 150)';
+
+class WigTrack extends TrackBase {
+
+    static defaults = {
+        height: 50,
+        flipAxis: false,
+        logScale: false,
+        windowFunction: 'mean',
+        graphType: 'bar',
+        autoscale: true,
+        normalize: undefined,
+        scaleFactor: undefined
+    }
+
+    constructor(config, browser) {
+        super(config, browser);
+    }
+
+    init(config) {
+
+        super.init(config);
+
+        this.type = "wig";
+        this.featureType = 'numeric';
+        this.paintAxis = paintAxis;
+
+        const format = config.format ? config.format.toLowerCase() : config.format;
+        if (config.featureSource) {
+            this.featureSource = config.featureSource;
+            delete config.featureSource;
+        } else if ("bigwig" === format) {
+            this.featureSource = new BWSource(config, this.browser.genome);
+        } else if ("tdf" === format) {
+            this.featureSource = new TDFSource(config, this.browser.genome);
+        } else {
+            this.featureSource = FeatureSource(config, this.browser.genome);
+        }
+
+
+        // Override autoscale default
+        if(config.max === undefined || config.autoscale === true) {
+            this.autoscale = true;
+        } else {
+            this.dataRange = {
+                min: config.min || 0,
+                max: config.max
+            };
+        }
+    }
+
+    async postInit() {
+        const header = await this.getHeader();
+        if (this.disposed) return   // This track was removed during async load
+        if (header) this.setTrackProperties(header);
+    }
+
+    async getFeatures(chr, start, end, bpPerPixel) {
+        const features = await this.featureSource.getFeatures({
+            chr,
+            start,
+            end,
+            bpPerPixel,
+            visibilityWindow: this.visibilityWindow,
+            windowFunction: this.windowFunction
+        });
+        if (this.normalize && this.featureSource.normalizationFactor) {
+            const scaleFactor = this.featureSource.normalizationFactor;
+            for (let f of features) {
+                f.value *= scaleFactor;
+            }
+        }
+        if (this.scaleFactor) {
+            const scaleFactor = this.scaleFactor;
+            for (let f of features) {
+                f.value *= scaleFactor;
+            }
+        }
+        return features
+    }
+
+    menuItemList() {
+        let items = [];
+
+        if (this.flipAxis !== undefined) {
+            items.push('<hr>');
+            items.push({
+                label: "Flip y-axis",
+                click: () => {
+                    this.flipAxis = !this.flipAxis;
+                    this.trackView.repaintViews();
+                }
+            });
+        }
+
+        items = items.concat(MenuUtils.numericDataMenuItems(this.trackView));
+
+        return items
+    }
+
+    async getHeader() {
+
+        if (typeof this.featureSource.getHeader === "function") {
+            this.header = await this.featureSource.getHeader();
+        }
+        return this.header
+    }
+
+    // TODO: refactor to igvUtils.js
+    getScaleFactor(min, max, height, logScale) {
+        const scale = logScale ? height / (Math.log10(max + 1) - (min <= 0 ? 0 : Math.log10(min + 1))) : height / (max - min);
+        return scale
+    }
+
+    computeYPixelValue(yValue, yScaleFactor) {
+        return (this.flipAxis ? (yValue - this.dataRange.min) : (this.dataRange.max - yValue)) * yScaleFactor
+    }
+
+    computeYPixelValueInLogScale(yValue, yScaleFactor) {
+        let maxValue = this.dataRange.max;
+        let minValue = this.dataRange.min;
+        if (maxValue <= 0) return 0 // TODO:
+        if (minValue <= -1) minValue = 0;
+        minValue = (minValue <= 0) ? 0 : Math.log10(minValue + 1);
+        maxValue = Math.log10(maxValue + 1);
+        yValue = Math.log10(yValue + 1);
+        return ((this.flipAxis ? (yValue - minValue) : (maxValue - yValue)) * yScaleFactor)
+    }
+
+    draw(options) {
+
+        const features = options.features;
+        const ctx = options.context;
+        const bpPerPixel = options.bpPerPixel;
+        const bpStart = options.bpStart;
+        const pixelWidth = options.pixelWidth;
+        options.pixelHeight;
+        const bpEnd = bpStart + pixelWidth * bpPerPixel + 1;
+        const posColor = this.color || DEFAULT_COLOR$1;
+
+        let baselineColor;
+        if (typeof posColor === "string" && posColor.startsWith("rgb(")) {
+            baselineColor = IGVColor.addAlpha(posColor, 0.1);
+        }
+        const scaleFactor = this.getScaleFactor(this.dataRange.min, this.dataRange.max, options.pixelHeight, this.logScale);
+        const yScale = (yValue) => this.logScale
+            ? this.computeYPixelValueInLogScale(yValue, scaleFactor)
+            : this.computeYPixelValue(yValue, scaleFactor);
+
+        if (features && features.length > 0) {
+
+            if (this.dataRange.min === undefined) this.dataRange.min = 0;
+
+            // Max can be less than min if config.min is set but max left to autoscale.   If that's the case there is
+            // nothing to paint.
+            if (this.dataRange.max > this.dataRange.min) {
+
+                let lastPixelEnd = -1;
+                let lastY;
+                const y0 = yScale(0);
+                for (let f of features) {
+
+                    if (f.end < bpStart) continue
+                    if (f.start > bpEnd) break
+
+                    const x = Math.floor((f.start - bpStart) / bpPerPixel);
+                    if (isNaN(x)) continue
+
+                    let y = yScale(f.value);
+
+                    const rectEnd = Math.ceil((f.end - bpStart) / bpPerPixel);
+                    const width = Math.max(1, rectEnd - x);
+
+                    const color = this.getColorForFeature(f);
+
+                    if (this.graphType === "points") {
+                        const pointSize = this.config.pointSize || 3;
+                        const px = x + width / 2;
+                        IGVGraphics.fillCircle(ctx, px, y, pointSize / 2, {"fillStyle": color, "strokeStyle": color});
+
+                    } else if (this.graphType === "line") {
+                        if (lastY != undefined) {
+                            IGVGraphics.strokeLine(ctx, lastPixelEnd, lastY, x, y, {
+                                "fillStyle": color,
+                                "strokeStyle": color
+                            });
+                        }
+                        IGVGraphics.strokeLine(ctx, x, y, x + width, y, {"fillStyle": color, "strokeStyle": color});
+                    } else {
+                        const height = y - y0;
+                        IGVGraphics.fillRect(ctx, x, y0, width, height, {fillStyle: color});
+
+                    }
+                    lastPixelEnd = x + width;
+                    lastY = y;
+                }
+
+                // If the track includes negative values draw a baseline
+                if (this.dataRange.min < 0) {
+                    const basepx = (this.dataRange.max / (this.dataRange.max - this.dataRange.min)) * options.pixelHeight;
+                    IGVGraphics.strokeLine(ctx, 0, basepx, options.pixelWidth, basepx, {strokeStyle: baselineColor});
+                }
+            }
+        }
+
+        // Draw guidelines
+        if (this.config.hasOwnProperty('guideLines')) {
+            for (let line of this.config.guideLines) {
+                if (line.hasOwnProperty('color') && line.hasOwnProperty('y') && line.hasOwnProperty('dotted')) {
+                    let y = yScale(line.y);
+                    let props = {
+                        'strokeStyle': line['color'],
+                        'strokeWidth': 2
+                    };
+                    if (line['dotted']) IGVGraphics.dashedLine(options.context, 0, y, options.pixelWidth, y, 5, props);
+                    else IGVGraphics.strokeLine(options.context, 0, y, options.pixelWidth, y, props);
+                }
+            }
+        }
+    }
+
+    popupData(clickState, features) {
+
+        if (features === undefined) features = this.clickedFeatures(clickState);
+
+        if (features && features.length > 0) {
+
+            const genomicLocation = clickState.genomicLocation;
+            const popupData = [];
+
+            // Sort features based on distance from click
+            features.sort(function (a, b) {
+                const distA = Math.abs((a.start + a.end) / 2 - genomicLocation);
+                const distB = Math.abs((b.start + b.end) / 2 - genomicLocation);
+                return distA - distB
+            });
+
+            // Display closest 10
+            const displayFeatures = features.length > 10 ? features.slice(0, 10) : features;
+
+            // Resort in ascending order
+            displayFeatures.sort(function (a, b) {
+                return a.start - b.start
+            });
+
+            for (let selectedFeature of displayFeatures) {
+                if (selectedFeature) {
+                    if (popupData.length > 0) {
+                        popupData.push('<hr/>');
+                    }
+                    let posString = (selectedFeature.end - selectedFeature.start) === 1 ?
+                        numberFormatter$1(selectedFeature.start + 1)
+                        : numberFormatter$1(selectedFeature.start + 1) + "-" + numberFormatter$1(selectedFeature.end);
+                    popupData.push({name: "Position:", value: posString});
+                    popupData.push({
+                        name: "Value:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;",
+                        value: numberFormatter$1(selectedFeature.value)
+                    });
+                }
+            }
+            if (displayFeatures.length < features.length) {
+                popupData.push("<hr/>...");
+            }
+
+            return popupData
+
+        } else {
+            return []
+        }
+    }
+
+    get supportsWholeGenome() {
+        return !this.config.indexURL && this.config.supportsWholeGenome !== false
+    }
+
+    /**
+     * Return color for feature.
+     * @param feature
+     * @returns {string}
+     */
+
+    getColorForFeature(f) {
+        let c = (f.value < 0 && this.altColor) ? this.altColor : this.color || DEFAULT_COLOR$1;
+        return (typeof c === "function") ? c(f.value) : c
+    }
+
+    /**
+     * Called when the track is removed.  Do any needed cleanup here
+     */
+    dispose() {
+        this.trackView = undefined;
+    }
+
+}
+
+/**
+ *
+ * @param cs - object containing
+ * 1) array of threshold values defining bin boundaries in ascending order
+ * 2) array of colors for bins  (length == thresholds.length + 1)
+ * @constructor
+ */
+function BinnedColorScale(cs) {
+    this.thresholds = cs.thresholds;
+    this.colors = cs.colors;
+}
+
+BinnedColorScale.prototype.getColor = function (value) {
+
+    for (let threshold of this.thresholds) {
+        if (value < threshold) {
+            return this.colors[this.thresholds.indexOf(threshold)]
+        }
+    }
+
+    return this.colors[this.colors.length - 1]
+
+};
+
+/**
+ *
+ * @param scale - object with the following properties
+ *           low
+ *           lowR
+ *           lowG
+ *           lowB
+ *           high
+ *           highR
+ *           highG
+ *           highB
+ *
+ * @constructor
+ */
+function GradientColorScale(scale) {
+
+    this.scale = scale;
+    this.lowColor = "rgb(" + scale.lowR + "," + scale.lowG + "," + scale.lowB + ")";
+    this.highColor = "rgb(" + scale.highR + "," + scale.highG + "," + scale.highB + ")";
+    this.diff = scale.high - scale.low;
+
+}
+
+GradientColorScale.prototype.getColor = function (value) {
+
+    var scale = this.scale, r, g, b, frac;
+
+    if (value <= scale.low) return this.lowColor
+    else if (value >= scale.high) return this.highColor
+
+    frac = (value - scale.low) / this.diff;
+    r = Math.floor(scale.lowR + frac * (scale.highR - scale.lowR));
+    g = Math.floor(scale.lowG + frac * (scale.highG - scale.lowG));
+    b = Math.floor(scale.lowB + frac * (scale.highB - scale.lowB));
+
+    return "rgb(" + r + "," + g + "," + b + ")"
+};
+
+class ConstantColorScale {
+    constructor(color) {
+        this.color = color;
+    }
+
+    getColor() {
+        return this.color
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class SegTrack extends TrackBase {
+
+    constructor(config, browser) {
+        super(config, browser);
+    }
+
+    init(config) {
+        super.init(config);
+
+        this.type = config.type || "seg";
+        if (this.type === 'maf') this.type = 'mut';
+        this.isLog = config.isLog;
+        this.displayMode = config.displayMode || "EXPANDED"; // EXPANDED | SQUISHED
+        this.height = config.height || 300;
+        this.maxHeight = config.maxHeight || 500;
+        this.squishedRowHeight = config.sampleSquishHeight || config.squishedRowHeight || 2;
+        this.expandedRowHeight = config.sampleExpandHeight || config.expandedRowHeight || 13;
+        this.sampleHeight = this.squishedRowHeight;      // Initial value, will get overwritten when rendered
+
+        if (config.color) {
+            this.color = config.color;
+        } else {
+            // Color scales for "seg" (copy number) tracks.
+            this.posColorScale = config.posColorScale ||
+                new GradientColorScale({
+                    low: 0.1,
+                    lowR: 255,
+                    lowG: 255,
+                    lowB: 255,
+                    high: 1.5,
+                    highR: 255,
+                    highG: 0,
+                    highB: 0
+                });
+            this.negColorScale = config.negColorScale ||
+                new GradientColorScale({
+                    low: -1.5,
+                    lowR: 0,
+                    lowG: 0,
+                    lowB: 255,
+                    high: -0.1,
+                    highR: 255,
+                    highG: 255,
+                    highB: 255
+                });
+
+            // Default color table for mutation (mut and maf) tracks
+            if (this.type === "mut") {
+                this.colorTable = new ColorTable(config.colorTable || MUT_COLORS);
+            }
+        }
+
+        this.sampleKeys = [];
+        this.sampleNames = new Map();
+        if (config.samples) {
+            // Explicit setting, keys == names
+            for (let s of config.samples) {
+                this.sampleKeys.push(s);
+                this.sampleNames.set(s, s);
+            }
+            this.explicitSamples = true;
+        }
+
+        //   this.featureSource = config.sourceType === "bigquery" ?
+        //       new igv.BigQueryFeatureSource(this.config) :
+
+        // Disable whole genome downsampling unless explicitly.
+        const configCopy = Object.assign({}, this.config);
+        configCopy.maxWGCount = configCopy.maxWGCount || Number.MAX_SAFE_INTEGER;
+        this.featureSource = FeatureSource(configCopy, this.browser.genome);
+
+        this.initialSort = config.sort;
+    }
+
+    async postInit() {
+        if (typeof this.featureSource.getHeader === "function") {
+            this.header = await this.featureSource.getHeader();
+            if(this.disposed) return;   // This track was removed during async load
+        }
+        // Set properties from track line
+        if (this.header) {
+            this.setTrackProperties(this.header);
+        }
+    }
+
+
+    menuItemList() {
+
+        const menuItems = [];
+        const lut =
+            {
+                "SQUISHED": "Squish",
+                "EXPANDED": "Expand",
+                "FILL": "Fill"
+            };
+
+        menuItems.push('<hr/>');
+        menuItems.push("DisplayMode:");
+
+        const displayOptions = this.type === 'seg' ? ["SQUISHED", "EXPANDED", "FILL"] : ["SQUISHED", "EXPANDED"];
+
+        for (let displayMode of displayOptions) {
+
+            const checkBox = createCheckbox(lut[displayMode], displayMode === this.displayMode);
+            menuItems.push(
+                {
+                    object: $$1(checkBox),
+                    click: () => {
+                        this.displayMode = displayMode;
+                        this.config.displayMode = displayMode;
+                        this.trackView.checkContentHeight();
+                        this.trackView.repaintViews();
+                        this.trackView.moveScroller(this.trackView.sampleNameViewport.trackScrollDelta);
+                    }
+                });
+        }
+
+        return menuItems
+
+    }
+
+    hasSamples() {
+        return true   // SEG, MUT, and MAF tracks have samples by definition
+    }
+
+    getSamples() {
+        return {
+            names: this.sampleKeys.map(key => this.sampleNames.get(key)),
+            height: this.sampleHeight,
+            yOffset: 0
+        }
+    }
+
+    async getFeatures(chr, start, end) {
+        const features = await this.featureSource.getFeatures({chr, start, end});
+        if (this.initialSort) {
+            const sort = this.initialSort;
+            this.sortSamples(sort.chr, sort.start, sort.end, sort.direction, features);
+            this.initialSort = undefined;  // Sample order is sorted,
+        }
+        return features
+    }
+
+
+    draw({context, renderSVG, pixelTop, pixelWidth, pixelHeight, features, bpPerPixel, bpStart}) {
+
+        IGVGraphics.fillRect(context, 0, pixelTop, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+
+        if (features && features.length > 0) {
+
+            this.checkForLog(features);
+
+            // New segments could conceivably add new samples
+            this.updateSampleKeys(features);
+
+            // Create a map for fast id -> row lookup
+            const samples = {};
+            this.sampleKeys.forEach(function (id, index) {
+                samples[id] = index;
+            });
+
+            let border;
+            switch (this.displayMode) {
+                case "FILL":
+                    this.sampleHeight = pixelHeight / this.sampleKeys.length;
+                    border = 0;
+                    break
+
+                case "SQUISHED":
+                    this.sampleHeight = this.squishedRowHeight;
+                    border = 0;
+                    break
+                default:   // EXPANDED
+                    this.sampleHeight = this.expandedRowHeight;
+                    border = 1;
+            }
+            const rowHeight = this.sampleHeight;
+
+
+            // this.featureMap = new Map()
+
+            for (let segment of features) {
+                segment.pixelRect = undefined;   // !important, reset this in case segment is not drawn
+            }
+
+            const pixelBottom = pixelTop + pixelHeight;
+            const bpEnd = bpStart + pixelWidth * bpPerPixel + 1;
+            const xScale = bpPerPixel;
+
+            this.sampleYStart = undefined;
+            for (let f of features) {
+
+                if (f.end < bpStart) continue
+                if (f.start > bpEnd) break
+
+                const sampleKey = f.sampleKey || f.sample;
+                f.row = samples[sampleKey];
+                const y = f.row * rowHeight + border;
+
+                if (undefined === this.sampleYStart) {
+                    this.sampleYStart = y;
+                }
+
+                const bottom = y + rowHeight;
+
+                if (bottom < pixelTop || y > pixelBottom) {
+                    continue
+                }
+
+                const segmentStart = Math.max(f.start, bpStart);
+                // const segmentStart = segment.start;
+                let x = Math.round((segmentStart - bpStart) / xScale);
+
+                const segmentEnd = Math.min(f.end, bpEnd);
+                // const segmentEnd = segment.end;
+                const x1 = Math.round((segmentEnd - bpStart) / xScale);
+                let w = Math.max(1, x1 - x);
+
+                let color;
+                if (this.color) {
+                    if (typeof this.color === "function") {
+                        color = this.color(f);
+                    } else {
+                        color = this.color;
+                    }
+                } else if (this.colorTable) {
+                    color = this.colorTable.getColor(f.value.toLowerCase());
+                }
+
+                let h;
+                if ("mut" === this.type) {
+                    h = rowHeight - 2 * border;
+                    if (w < 3) {
+                        w = 3;
+                        x -= 1;
+                    }
+                } else {
+                    // Assume seg track
+                    let value = f.value;
+                    if (!this.isLog) {
+                        value = IGVMath.log2(value / 2);
+                    }
+                    if (value < -0.1) {
+                        color = this.negColorScale.getColor(value);
+                    } else if (value > 0.1) {
+                        color = this.posColorScale.getColor(value);
+                    } else {
+                        color = "white";
+                    }
+
+                    let sh = rowHeight;
+                    if (rowHeight < 0.25) {
+                        const f = 0.1 + 2 * Math.abs(value);
+                        sh = Math.min(1, f * rowHeight);
+                    }
+                    h = sh - 2 * border;
+                }
+
+
+                f.pixelRect = {x, y, w, h};
+
+                // Use for diagnostic rendering
+                // context.fillStyle = randomRGB(180, 240)
+                // context.fillStyle = randomGrey(200, 255)
+                context.fillStyle = color;
+                context.fillRect(x, y, w, h);
+            }
+
+        }
+
+    }
+
+
+    checkForLog(features) {
+        if (this.isLog === undefined) {
+            this.isLog = false;
+            for (let feature of features) {
+                if (feature.value < 0) {
+                    this.isLog = true;
+                    return
+                }
+            }
+        }
+    }
+
+    /**
+     * Optional method to compute pixel height to accomodate the list of features.  The implementation below
+     * has side effects (modifiying the samples hash).  This is unfortunate, but harmless.
+     *
+     * Note displayMode "FILL" is handled by the viewport
+     *
+     * @param features
+     * @returns {number}
+     */
+    computePixelHeight(features) {
+        if (!features) return 0
+        const sampleHeight = ("SQUISHED" === this.displayMode) ? this.squishedRowHeight : this.expandedRowHeight;
+        this.updateSampleKeys(features);
+        return this.sampleKeys.length * sampleHeight
+    }
+
+    /**
+     * Sort samples by the average value over the genomic range in the direction indicated (1 = ascending, -1 descending)
+     */
+    async sortSamples(chr, start, end, direction, featureList) {
+
+        if (!featureList) {
+            featureList = await this.featureSource.getFeatures({chr, start, end});
+        }
+        if (!featureList) return
+
+        this.updateSampleKeys(featureList);
+
+        const scores = {};
+        const d2 = (direction === "ASC" ? 1 : -1);
+
+        const sortSeg = () => {
+            // Compute weighted average score for each sample
+            const bpLength = end - start + 1;
+            for (let segment of featureList) {
+                if (segment.end < start) continue
+                if (segment.start > end) break
+                const min = Math.max(start, segment.start);
+                const max = Math.min(end, segment.end);
+                const f = (max - min) / bpLength;
+                const sampleKey = segment.sampleKey || segment.sample;
+                const s = scores[sampleKey] || 0;
+                scores[sampleKey] = s + f * segment.value;
+            }
+
+            // Now sort sample names by score
+            this.sampleKeys.sort(function (a, b) {
+                let s1 = scores[a];
+                let s2 = scores[b];
+                if (!s1) s1 = d2 * Number.MAX_VALUE;
+                if (!s2) s2 = d2 * Number.MAX_VALUE;
+                if (s1 === s2) return 0
+                else if (s1 > s2) return d2
+                else return d2 * -1
+            });
+        };
+
+        const sortMut = () => {
+            // Compute weighted average score for each sample
+            for (let segment of featureList) {
+                if (segment.end < start) continue
+                if (segment.start > end) break
+                const sampleKey = segment.sampleKey || segment.sample;
+                if (!scores.hasOwnProperty(sampleKey) || segment.value.localeCompare(scores[sampleKey]) > 0) {
+                    scores[sampleKey] = segment.value;
+                }
+            }
+            // Now sort sample names by score
+            this.sampleKeys.sort(function (a, b) {
+                let sa = scores[a] || "";
+                let sb = scores[b] || "";
+                return d2 * (sa.localeCompare(sb))
+            });
+        };
+
+        if ("mut" === this.type) {
+            sortMut();
+        } else {
+            sortSeg();
+        }
+
+        this.trackView.repaintViews();
+
+    }
+
+    clickedFeatures(clickState) {
+
+        const allFeatures = super.clickedFeatures(clickState);
+        const y = clickState.y;
+        return allFeatures.filter(function (feature) {
+            const rect = feature.pixelRect;
+            return rect && y >= rect.y && y <= (rect.y + rect.h)
+        })
+
+    }
+
+    hoverText(clickState) {
+        const features = this.clickedFeatures(clickState);
+        if(features && features.length > 0) {
+            return `${features[0].sample}: ${features[0].value}`
+        }
+    }
+
+    popupData(clickState, featureList) {
+
+        if(featureList === undefined) featureList = this.clickedFeatures(clickState);
+
+        const items = [];
+
+        for (let feature of featureList) {
+
+            // Double line divider between features
+            if (items.length > 0) {
+                items.push('<hr/>');
+                items.push('<hr/>');
+            }
+
+            // hack for whole genome features, which save the original feature as "_f"
+            const f = feature._f || feature;
+
+            const data = (typeof f.popupData === 'function') ?
+                f.popupData(this.type, this.browser.genome.id) :
+                this.extractPopupData(f);
+            Array.prototype.push.apply(items, data);
+
+        }
+
+        return items
+    }
+
+    contextMenuItemList(clickState) {
+
+        const referenceFrame = clickState.viewport.referenceFrame;
+        const genomicLocation = clickState.genomicLocation;
+
+        // Define a region 5 "pixels" wide in genomic coordinates
+        const sortDirection = this.config.sort ?
+            (this.config.sort.direction === "ASC" ? "DESC" : "ASC") :      // Toggle from previous sort
+            "DESC";
+        const bpWidth = referenceFrame.toBP(2.5);
+
+        const sortHandler = (sort) => {
+            const viewport = clickState.viewport;
+            const features = viewport.cachedFeatures;
+            this.sortSamples(sort.chr, sort.start, sort.end, sort.direction, features);
+        };
+
+        const sortLabel = this.type === 'seg' ? 'Sort by value' : 'Sort by type';
+
+        return [
+            {
+                label: sortLabel, click: (e) => {
+
+
+                    const sort = {
+                        direction: sortDirection,
+                        chr: clickState.viewport.referenceFrame.chr,
+                        start: genomicLocation - bpWidth,
+                        end: genomicLocation + bpWidth
+
+                    };
+
+                    sortHandler(sort);
+
+                    this.config.sort = sort;
+
+                }
+            }]
+
+    }
+
+    get supportsWholeGenome() {
+        return (this.config.indexed === false || !this.config.indexURL) && this.config.supportsWholeGenome !== false
+    }
+
+    updateSampleKeys(featureList) {
+
+        if (this.explicitSamples) return
+
+        for (let feature of featureList) {
+            const sampleKey = feature.sampleKey || feature.sample;
+            if (!this.sampleNames.has(sampleKey)) {
+                this.sampleNames.set(sampleKey, feature.sample);
+                this.sampleKeys.push(sampleKey);
+            }
+        }
+    }
+}
+
+// Mut and MAF file default color table
+
+const MUT_COLORS = {
+
+    "indel": "rgb(0,200,0)",
+    "targeted region": "rgb(236,155,43)",
+    "truncating": "rgb(	150,0,0)",
+    "non-coding transcript": "rgb(0,0,150)",
+
+    // Colors from https://www.nature.com/articles/nature11404
+    "synonymous": "rgb(109,165,95)",
+    "silent": "rgb(109,135,80)",
+    "missense_mutation": "rgb(72,130,187)",
+    "missense": "rgb(72,130,187)",
+    "splice site": "rgb(143,83,155)",
+    "splice_region": "rgb(143,83,155)",
+    "nonsense": "rgb(216, 57,81)",
+    "nonsense_mutation": "rgb(216, 57,81)",
+    "frame_shift_del": "rgb(226,135,65)",
+    "frame_shift_ins": "rgb(226,135,65)",
+    "in_frame_del": "rgb(247,235,94)",
+    "in_frame_ins": "rgb(247,235,94)",
+    "*other*": "rgb(159,91,50)"
+    //
+    // 3'Flank
+    // 3'UTR
+    // 5'Flank
+    // 5'UTR
+    // Frame_Shift_Del
+    // Frame_Shift_Ins
+    // IGR
+    // In_Frame_Del
+    // In_Frame_Ins
+    // Intron
+    // Missense_Mutation
+    // Nonsense_Mutation
+    // Nonstop_Mutation
+    // RNA
+    // Silent
+    // Splice_Region
+    // Splice_Site
+    // Translation_Start_Site
+    // Variant_Classification
+
+};
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2017 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+/**
+ * Represents 2 or more wig tracks overlaid on a common viewport.
+ */
+class MergedTrack extends TrackBase {
+
+    constructor(config, browser) {
+        super(config, browser);
+        this.type = "merged";
+        this.featureType = 'numeric';
+        this.paintAxis = paintAxis;
+        this.graphType = config.graphType;
+    }
+
+    init(config) {
+        if (!config.tracks) {
+            throw Error("Error: no tracks defined for merged track" + config)
+        }
+
+        super.init(config);
+    }
+
+    async postInit() {
+
+        this.tracks = [];
+        const p = [];
+        for (let tconf of this.config.tracks) {
+            tconf.isMergedTrack = true;
+            const t = await this.browser.createTrack(tconf);
+            if (t) {
+                t.autoscale = false;     // Scaling done from merged track
+                this.tracks.push(t);
+            } else {
+                console.warn("Could not create track " + tconf);
+            }
+
+            if (typeof t.postInit === 'function') {
+                p.push(t.postInit());
+            }
+        }
+
+        this.flipAxis = this.config.flipAxis ? this.config.flipAxis : false;
+        this.logScale = this.config.logScale ? this.config.logScale : false;
+        this.autoscale = this.config.autoscale || this.config.max === undefined;
+        if (!this.autoscale) {
+            this.dataRange = {
+                min: this.config.min || 0,
+                max: this.config.max
+            };
+        }
+        for (let t of this.tracks) {
+            t.autoscale = false;
+            t.dataRange = this.dataRange;
+        }
+
+        this.height = this.config.height || 50;
+
+        return Promise.all(p)
+    }
+
+    get height() {
+        return this._height
+    }
+
+    set height(h) {
+        this._height = h;
+        if (this.tracks) {
+            for (let t of this.tracks) {
+                t.height = h;
+                t.config.height = h;
+            }
+        }
+    }
+
+    menuItemList() {
+        let items = [];
+        if (this.flipAxis !== undefined) {
+            items.push({
+                label: "Flip y-axis",
+                click: () => {
+                    this.flipAxis = !this.flipAxis;
+                    this.trackView.repaintViews();
+                }
+            });
+        }
+
+        items = items.concat(MenuUtils.numericDataMenuItems(this.trackView));
+
+        return items
+    }
+
+    /**
+     * Returns a MergedFeatureCollection containing an array of features for the specified range, 1 for each track.
+     */
+    async getFeatures(chr, bpStart, bpEnd, bpPerPixel) {
+
+        const promises = this.tracks.map((t) => t.getFeatures(chr, bpStart, bpEnd, bpPerPixel));
+        const featureArrays = await Promise.all(promises);
+        return new MergedFeatureCollection(featureArrays)
+    }
+
+    draw(options) {
+
+        const mergedFeatures = options.features;    // A MergedFeatureCollection
+
+        for (let i = 0, len = this.tracks.length; i < len; i++) {
+            const trackOptions = Object.assign({}, options);
+            trackOptions.features = mergedFeatures.featureArrays[i];
+            this.tracks[i].dataRange = this.dataRange;
+            this.tracks[i].flipAxis = this.flipAxis;
+            this.tracks[i].logScale = this.logScale;
+            if (this.graphType) {
+                this.tracks[i].graphType = this.graphType;
+            }
+            this.tracks[i].draw(trackOptions);
+        }
+    }
+
+    popupData(clickState) {
+
+        if(clickState.viewport && clickState.viewport.cachedFeatures) {
+
+            const featuresArray = clickState.viewport.cachedFeatures.featureArrays;
+
+            if (featuresArray && featuresArray.length === this.tracks.length) {
+                // Array of feature arrays, 1 for each track
+                const popupData = [];
+                for (let i = 0; i < this.tracks.length; i++) {
+                    if (i > 0) popupData.push('<hr/>');
+                    popupData.push(`<div style=background-color:rgb(245,245,245);border-bottom-style:dashed;border-bottom-width:1px;padding-bottom:5px;padding-top:10px;font-weight:bold;font-size:larger >${this.tracks[i].name}</div>`);
+                    const trackPopupData = this.tracks[i].popupData(clickState, featuresArray[i]);
+                    popupData.push(...trackPopupData);
+
+                }
+                return popupData
+            }
+        }
+    }
+
+    clickedFeatures(clickState) {
+
+
+        // We use the cached features rather than method to avoid async load.  If the
+        // feature is not already loaded this won't work,  but the user wouldn't be mousing over it either.
+        const mergedFeaturesCollection = clickState.viewport.cachedFeatures;
+
+        if(!mergedFeaturesCollection) {
+            return [];
+        }
+
+        const genomicLocation = clickState.genomicLocation;
+        const clickedFeatures = [];
+        for(let features of mergedFeaturesCollection.featureArrays) {
+            // When zoomed out we need some tolerance around genomicLocation
+            const tolerance = (clickState.referenceFrame.bpPerPixel > 0.2) ? 3 * clickState.referenceFrame.bpPerPixel : 0.2;
+            const ss = genomicLocation - tolerance;
+            const ee = genomicLocation + tolerance;
+            const tmp = (FeatureUtils.findOverlapping(features, ss, ee));
+            for(let f of tmp) {
+                clickedFeatures.push(f);
+            }
+        }
+        return clickedFeatures;
+    }
+
+
+    get supportsWholeGenome() {
+        return this.tracks.every(track => track.supportsWholeGenome)
+    }
+}
+
+
+class MergedFeatureCollection {
+
+    constructor(featureArrays) {
+        this.featureArrays = featureArrays;
+    }
+
+    getMax(start, end) {
+        let max = -Number.MAX_VALUE;
+        for (let a of this.featureArrays) {
+            for (let f of a) {
+                if (typeof f.value !== 'undefined' && !Number.isNaN(f.value)) {
+                    if (f.end < start) {
+                        continue
+                    }
+                    if (f.start > end) {
+                        break
+                    }
+                    max = Math.max(max, f.value);
+                }
+            }
+        }
+        return max
+    }
+
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2018 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+function getArcType(config) {
+    if (!config.arcType) {
+        return "nested"
+    }
+    switch (config.arcType) {
+        case "chiapet":
+            return "inView"
+        case "chiapetoutbound":
+            return "partialInView"
+        default:
+            return config.arcType
+    }
+}
+
+const DEFAULT_ARC_COLOR = "rgb(180,25,137)";
+
+class InteractionTrack extends TrackBase {
+
+    static defaults = {
+        height: 250,
+        theta: Math.PI / 4,
+        arcOrientation: true,
+        showBlocks: true,
+        blockHeight: 3,
+        thickness: 1,
+        alpha: 0.02,
+        logScale: true,
+    }
+
+    constructor(config, browser) {
+        super(config, browser);
+    }
+
+    init(config) {
+
+        super.init(config);
+
+        this.sinTheta = Math.sin(this.theta);
+        this.cosTheta = Math.cos(this.theta);
+        this.arcType = getArcType(config);   // nested | proportional | inView | partialInView
+        this.alpha = config.alpha || 0.02;  // was: 0.15
+        this.painter = {flipAxis: !this.arcOrientation, dataRange: this.dataRange, paintAxis: paintAxis};
+
+        if (config.valueColumn) {
+            this.valueColumn = config.valueColumn;
+            this.hasValue = true;
+        } else if (config.useScore) {
+            this.hasValue = true;
+            this.valueColumn = "score";
+        }
+
+        if (config.max) {
+            this.dataRange = {
+                min: config.min || 0,
+                max: config.max
+            };
+            this.autoscale = false;
+        } else {
+            this.autoscale = true;
+        }
+
+        // Create the FeatureSource and override the default whole genome method
+        if (config.featureSource) {
+            this.featureSource = config.featureSource;
+            delete config._featureSource;
+        } else {
+            this.featureSource = FeatureSource(config, this.browser.genome);
+            this.featureSource.getWGFeatures = getWGFeatures;
+        }
+    }
+
+    async postInit() {
+
+        if (typeof this.featureSource.getHeader === "function") {
+            this.header = await this.featureSource.getHeader();
+            if (this.disposed) return;   // This track was removed during async load
+        }
+
+        // Set properties from track line
+        if (this.header) {
+            this.setTrackProperties(this.header);
+        }
+
+        if (this.visibilityWindow === undefined && typeof this.featureSource.defaultVisibilityWindow === 'function') {
+            this.visibilityWindow = await this.featureSource.defaultVisibilityWindow();
+            this.featureSource.visibilityWindow = this.visibilityWindow;  // <- this looks odd
+        }
+
+        return this
+    }
+
+    get supportsWholeGenome() {
+        return true
+    }
+
+    async getFeatures(chr, start, end) {
+        const visibilityWindow = this.visibilityWindow;
+        const features = await this.featureSource.getFeatures({chr, start, end, visibilityWindow});
+
+        // Check for score or value
+        if (this.hasValue === undefined && features && features.length > 0) {
+            this.hasValue = features[0].score !== undefined;
+        }
+
+        return features
+    }
+
+    draw(options) {
+
+        if (this.arcType === "proportional") {
+            this.drawProportional(options);
+        } else if (this.arcType === "inView" || this.arcType === "partialInView") {
+            this.drawProportional(options);
+        } else {
+            this.drawNested(options);
+        }
+    }
+
+    drawNested(options) {
+
+        const ctx = options.context;
+        const pixelWidth = options.pixelWidth;
+        const pixelHeight = options.pixelHeight;
+        const viewportWidth = options.viewportWidth;
+        const bpPerPixel = options.bpPerPixel;
+        const bpStart = options.bpStart;
+        const xScale = bpPerPixel;
+
+        IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+
+        const featureList = options.features;
+
+        if (featureList) {
+
+            // Autoscale theta
+            autoscaleNested.call(this);
+            const y = this.arcOrientation ? options.pixelHeight : 0;
+            const direction = this.arcOrientation;
+
+            ctx.font = "8px sans-serif";
+            ctx.textAlign = "center";
+
+            for (let feature of featureList) {
+
+                // Reset transient property drawState.  An undefined value => feature has not been drawn.
+                feature.drawState = undefined;
+
+                let color;
+                if (typeof this.color === 'function') {
+                    color = this.color(feature);
+                } else {
+                    color = this.color || feature.color || DEFAULT_ARC_COLOR;
+                    if (color && this.config.useScore) {
+                        color = getAlphaColor(color, scoreShade(feature.score));
+                    }
+                }
+
+                ctx.lineWidth = feature.thickness || this.thickness || 1;
+
+                if (feature.chr1 === feature.chr2 || feature.chr === 'all') {
+
+                    const {m1, m2} = getMidpoints(feature, this.browser.genome);
+
+                    let pixelStart = Math.round((m1 - bpStart) / xScale);
+                    let pixelEnd = Math.round((m2 - bpStart) / xScale);
+                    if (pixelEnd < 0 || pixelStart > pixelWidth) continue
+
+                    let w = (pixelEnd - pixelStart);
+                    if (w < 3) {
+                        w = 3;
+                        pixelStart--;
+                    }
+
+                    const a = w / 2;
+                    const r = a / this.sinTheta;
+                    const b = this.cosTheta * r;
+                    const xc = pixelStart + a;
+
+                    let yc, startAngle, endAngle;
+                    if (direction) { // UP
+                        yc = this.height + b;
+                        startAngle = Math.PI + Math.PI / 2 - this.theta;
+                        endAngle = Math.PI + Math.PI / 2 + this.theta;
+                    } else { // DOWN
+                        yc = -b;
+                        startAngle = Math.PI / 2 - this.theta;
+                        endAngle = Math.PI / 2 + this.theta;
+                    }
+
+                    if (this.showBlocks && feature.chr !== 'all') {
+                        const s1 = (feature.start1 - bpStart) / xScale;
+                        const e1 = (feature.end1 - bpStart) / xScale;
+                        const s2 = (feature.start2 - bpStart) / xScale;
+                        const e2 = (feature.end2 - bpStart) / xScale;
+                        const hb = this.arcOrientation ? -this.blockHeight : this.blockHeight;
+                        ctx.fillRect(s1, y, e1 - s1, hb);
+                        ctx.fillRect(s2, y, e2 - s2, hb);
+                    }
+
+                    // Alpha shade (de-emphasize) arcs that extend beyond viewport, unless alpha shading is used for score.
+                    if (color && !this.config.useScore && w > viewportWidth) {
+                        color = getAlphaColor(color, this.alpha);
+                    }
+                    ctx.strokeStyle = color;
+                    ctx.fillStyle = color;
+                    ctx.beginPath();
+                    ctx.arc(xc, yc, r, startAngle, endAngle, false);
+                    ctx.stroke();
+                    feature.drawState = {xc, yc, r};
+                } else {
+
+                    let pixelStart = Math.round((feature.start - bpStart) / xScale);
+                    let pixelEnd = Math.round((feature.end - bpStart) / xScale);
+                    if (pixelEnd < 0 || pixelStart > pixelWidth) continue
+
+                    let w = (pixelEnd - pixelStart);
+                    if (w < 3) {
+                        w = 3;
+                        pixelStart--;
+                    }
+                    const otherChr = feature.chr === feature.chr1 ? feature.chr2 : feature.chr1;
+                    ctx.strokeStyle = color;
+                    // get a sense of trans "spread"
+                    ctx.fillStyle = getAlphaColor(getChrColor(otherChr), 0.5);
+                    // ctx.fillStyle = color
+
+                    if (direction) {
+                        // UP
+                        ctx.fillRect(pixelStart, this.height / 2, w, this.height / 2);
+                        ctx.fillText(otherChr, pixelStart + w / 2, this.height / 2 - 5);
+                        feature.drawState = {x: pixelStart, y: this.height / 2, w: w, h: this.height / 2};
+                    } else {
+                        ctx.fillRect(pixelStart, 0, w, this.height / 2);
+                        ctx.fillText(otherChr, pixelStart + w / 2, this.height / 2 + 13);
+                        feature.drawState = {x: pixelStart, y: 0, w: w, h: this.height / 2};
+                    }
+                }
+            }
+        }
+
+        function autoscaleNested() {
+            let max = 0;
+            for (let feature of featureList) {
+                let pixelStart = (feature.start - bpStart) / xScale;
+                let pixelEnd = (feature.end - bpStart) / xScale;
+                if (pixelStart >= 0 && pixelEnd <= pixelWidth) {
+                    max = Math.max(max, pixelEnd - pixelStart);
+                }
+            }
+            let a = Math.min(viewportWidth, max) / 2;
+            if (max > 0) {
+                let coa = (pixelHeight - 10) / a;
+                this.theta = estimateTheta(coa);
+                this.sinTheta = Math.sin(this.theta);
+                this.cosTheta = Math.cos(this.theta);
+            }
+        }
+    }
+
+    getScaleFactor(min, max, height, logScale) {
+        const scale = logScale ? height / (Math.log10(max + 1) - (min <= 0 ? 0 : Math.log10(min + 1))) : height / (max - min);
+        return scale
+    }
+
+    drawProportional(options) {
+
+        const ctx = options.context;
+        const pixelWidth = options.pixelWidth;
+        const pixelHeight = options.pixelHeight;
+        const bpPerPixel = options.bpPerPixel;
+        const bpStart = options.bpStart;
+        const xScale = bpPerPixel;
+        const refStart = options.referenceFrame.start;
+        const refEnd = options.referenceFrame.end;
+
+
+        IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+
+        const featureList = options.features;
+
+        if (featureList && featureList.length > 0) {
+
+            // we use the min as a filter but not moving the axis
+            const effectiveMin = 0;
+            const yScale = this.getScaleFactor(effectiveMin, this.dataRange.max, options.pixelHeight - 1, this.logScale);
+            const y = this.arcOrientation ? options.pixelHeight : 0;
+
+            for (let feature of featureList) {
+
+                // Reset transient property drawState.  An undefined value => feature has not been drawn.
+                feature.drawState = undefined;
+
+                const value = this.valueColumn ? feature[this.valueColumn] : feature.score;
+                if (value === undefined || Number.isNaN(value)) continue
+
+                const radiusY = Math.round((this.logScale ? Math.log10(value + 1) : value) * yScale);
+
+                if (feature.chr1 === feature.chr2 || feature.chr === 'all') {
+
+                    const {m1, m2} = getMidpoints(feature, this.browser.genome);
+
+                    let pixelStart = Math.round((m1 - bpStart) / xScale);
+                    let pixelEnd = Math.round((m2 - bpStart) / xScale);
+                    let w = (pixelEnd - pixelStart);
+                    if (w < 3) {
+                        w = 3;
+                        pixelStart--;
+                    }
+
+                    // Various filters
+                    if (value < this.dataRange.min || value > this.dataRange.max) continue
+                    if ("proportional" !== this.arcType) {
+                        const showOutbound = (this.arcType === "partialInView");
+                        const within = (m1 >= refStart && m2 <= refEnd);
+                        let outBound = false;
+                        let inBound = false;
+                        if (!within && showOutbound) {
+                            outBound = (refStart <= m1 && m1 <= refEnd);
+                            if (!outBound) inBound = (refStart <= m2 && m2 <= refEnd);
+                        }
+                        if (!(within || outBound || inBound)) continue
+                    }
+
+
+                    const radiusX = w / 2;
+                    const xc = pixelStart + w / 2;
+                    feature.drawState = {xc, yc: y, radiusX, radiusY};
+
+                    // const arcKey = ((pixelStart << 16) | pixelEnd)
+                    // let arc = arcCaches.get(arcKey)
+                    // if (arc !== undefined) {
+                    //     if (arc.has(radiusY)) {
+                    //         continue
+                    //     }
+                    //     arc.add(radiusY)
+                    // } else {
+                    //     let arcHeights = new Set()
+                    //     arcHeights.add(radiusY)
+                    //     arcCaches.set(arcKey, arcHeights)
+                    // }
+
+                    const counterClockwise = this.arcOrientation ? true : false;
+                    const color = feature.color || this.color;
+                    ctx.strokeStyle = color;
+                    ctx.lineWidth = feature.thickness || this.thickness || 1;
+
+                    if (true === ctx.isSVG) {
+                        ctx.strokeEllipse(xc, y, radiusX, radiusY, 0, 0, Math.PI, counterClockwise);
+                    } else {
+                        ctx.beginPath();
+                        ctx.ellipse(xc, y, radiusX, radiusY, 0, 0, Math.PI, counterClockwise);
+                        ctx.stroke();
+                    }
+
+                    if (this.alpha) {
+                        ctx.fillStyle = getAlphaColor(color, this.alpha);
+                        if (true === ctx.isSVG) {
+                            ctx.fillEllipse(xc, y, radiusX, radiusY, 0, 0, Math.PI, counterClockwise);
+                        } else {
+                            ctx.fill();
+                        }
+                    }
+
+                    if (this.showBlocks && feature.chr !== 'all') {
+                        ctx.fillStyle = color;
+                        const s1 = (feature.start1 - bpStart) / xScale;
+                        const e1 = (feature.end1 - bpStart) / xScale;
+                        const s2 = (feature.start2 - bpStart) / xScale;
+                        const e2 = (feature.end2 - bpStart) / xScale;
+                        const hb = this.arcOrientation ? -this.blockHeight : this.blockHeight;
+                        ctx.fillRect(s1, y, e1 - s1, hb);
+                        ctx.fillRect(s2, y, e2 - s2, hb);
+                    }
+
+                } else {
+                    // Inter chromosome
+                    let pixelStart = Math.round((feature.start - bpStart) / xScale);
+                    let pixelEnd = Math.round((feature.end - bpStart) / xScale);
+                    if (pixelEnd < 0 || pixelStart > pixelWidth || value < this.dataRange.min || value > this.dataRange.max) continue
+
+                    const h = Math.min(radiusY, this.height - 13);   // Leave room for text
+                    let w = (pixelEnd - pixelStart);
+                    if (w < 3) {
+                        w = 3;
+                        pixelStart--;
+                    }
+                    const otherChr = feature.chr === feature.chr1 ? feature.chr2 : feature.chr1;
+                    ctx.font = "8px sans-serif";
+                    ctx.textAlign = "center";
+                    // get a sense of trans "spread"
+                    ctx.fillStyle = getAlphaColor(getChrColor(otherChr), 0.5);
+                    if (this.arcOrientation) {
+                        // UP
+                        const y = this.height - h;
+                        ctx.fillRect(pixelStart, y, w, h);
+                        ctx.fillText(otherChr, pixelStart + w / 2, y - 5);
+                        feature.drawState = {x: pixelStart, y, w, h};
+                    } else {
+                        ctx.fillRect(pixelStart, 0, w, h);
+                        ctx.fillText(otherChr, pixelStart + w / 2, h + 13);
+                        feature.drawState = {x: pixelStart, y: 0, w, h};
+                    }
+                }
+            }
+        }
+    }
+
+    clearAxis(ctx, pixelWidth, pixelHeight) {
+        IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+    }
+
+    paintAxis(ctx, pixelWidth, pixelHeight) {
+        // dataRane is interpreted differently for interactino tracks -- all arcs are drawn from "zero", irrespective of dataRange.min
+        const axisRange = {min: 0, max: this.dataRange.max};
+        if (this.arcType === "proportional") {
+            this.painter.flipAxis = !this.arcOrientation;
+            this.painter.dataRange = axisRange;
+            this.painter.paintAxis(ctx, pixelWidth, pixelHeight);
+        } else if (this.arcType === "inView" || this.arcType === "partialInView") {
+            this.painter.flipAxis = !this.arcOrientation;
+            this.painter.dataRange = axisRange;
+            this.painter.paintAxis(ctx, pixelWidth, pixelHeight);
+        } else {
+            this.clearAxis(ctx, pixelWidth, pixelHeight);
+        }
+    }
+
+    menuItemList() {
+
+        let items = [];
+
+        if (this.hasValue) {
+            items.push("<hr/>");
+            const lut =
+                {
+                    "nested": "Nested",
+                    "proportional": "Proportional - All",
+                    "inView": "Proportional - Both Ends in View",
+                    "partialInView": "Proportional - One End in View"
+                };
+            items.push("<b>Arc Type</b>");
+            for (let arcType of ["nested", "proportional", "inView", "partialInView"]) {
+                items.push(
+                    {
+                        object: $$1(createCheckbox(lut[arcType], arcType === this.arcType)),
+                        click: () => {
+                            this.arcType = arcType;
+                            this.trackView.repaintViews();
+                        }
+                    });
+            }
+        }
+        items.push("<hr/>");
+
+        items.push({
+            name: "Toggle arc direction",
+            click: () => {
+                this.arcOrientation = !this.arcOrientation;
+                this.trackView.repaintViews();
+            }
+        });
+        items.push({
+            name: this.showBlocks ? "Hide Blocks" : "Show Blocks",
+            click: () => {
+                this.showBlocks = !this.showBlocks;
+                this.trackView.repaintViews();
+            }
+        });
+
+
+        if (this.arcType === "proportional" || this.arcType === "inView" || this.arcType === "partialInView") {
+            // MenuUtils.numericDataMenuItems(this.trackView).forEach(item => items.push(item))
+            items = items.concat(MenuUtils.numericDataMenuItems(this.trackView));
+        }
+
+        if (this.browser.circularView) {
+            items.push('<hr/>');
+            items.push({
+                label: 'Add interactions to circular view',
+                click: () => {
+                    for (let viewport of this.trackView.viewports) {
+                        this.addChordsForViewport(viewport.referenceFrame);
+                    }
+                }
+            });
+        }
+
+        return items
+    }
+
+    contextMenuItemList(clickState) {
+
+        // Experimental JBrowse feature
+        if (this.browser.circularView) {
+            const viewport = clickState.viewport;
+            const list = [];
+
+            list.push({
+                label: 'Add interactions to circular view',
+                click: () => {
+                    const refFrame = viewport.referenceFrame;
+                    // first pass: to get all the relevant features
+                    this.addChordsForViewport(refFrame);
+                }
+            });
+
+            list.push('<hr/>');
+            return list
+        }
+    }
+
+    /**
+     * Add chords to the circular view for the given viewport, represented by its reference frame
+     * @param refFrame
+     */
+    addChordsForViewport(refFrame) {
+        const cachedFeatures = "all" === refFrame.chr ?
+            this.featureSource.getAllFeatures() :
+            this.featureSource.featureCache.queryFeatures(refFrame.chr, refFrame.start, refFrame.end);
+
+        // inView features are simply features that have been drawn, i.e. have a drawState
+        const inView = cachedFeatures.filter(f => f.drawState);
+        if (inView.length === 0) return;
+
+        const chords = makeBedPEChords(inView);
+        sendChords(chords, this, refFrame, 0.5);
+        //
+        //
+        // // for filtered set, distinguishing the chromosomes is more critical than tracks
+        // const chordSetColor = IGVColor.addAlpha("all" === refFrame.chr ? this.color : getChrColor(refFrame.chr), 0.5)
+        // const trackColor = IGVColor.addAlpha(this.color, 0.5)
+        //
+        // // name the chord set to include locus and filtering information
+        // const encodedName = this.name.replaceAll(' ', '%20')
+        // const chordSetName = "all" === refFrame.chr ?
+        //     encodedName :
+        //     `${encodedName} (${refFrame.chr}:${refFrame.start}-${refFrame.end} ; range:${this.dataRange.min}-${this.dataRange.max})`
+        // this.browser.circularView.addChords(chords, {track: chordSetName, color: chordSetColor, trackColor: trackColor})
+    }
+
+    doAutoscale(features) {
+
+        // if ("proportional" === this.arcType) {
+        let max = 0;
+        if (features) {
+            for (let f of features) {
+                const v = this.valueColumn ? f[this.valueColumn] : f.score;
+                if (!Number.isNaN(v)) {
+                    max = Math.max(max, v);
+                }
+            }
+        }
+        return {min: 0, max: max}
+        // }
+    }
+
+    popupData(clickState, features) {
+
+        if (features === undefined) features = this.clickedFeatures(clickState);
+
+        const data = [];
+        for (let feature of features) {
+
+            const f = feature._ || feature;   // For "whole genome" features, which keeps a pointer to the original
+
+            data.push({name: "Region 1", value: positionString(f.chr1, f.start1, f.end1, f.strand1)});
+            data.push({name: "Region 2", value: positionString(f.chr2, f.start2, f.end2, f.strand2)});
+            if (f.name) {
+                data.push({name: "Name", value: f.name});
+            }
+            if (f.value !== undefined) {
+                data.push({name: "Value", value: f.value});
+            }
+            if (f.score !== undefined) {
+                data.push({name: "Score", value: f.score});
+            }
+
+
+            if (f.extras && this.header && this.header.columnNames) {
+                const columnNames = this.header.columnNames;
+                const stdColumns = this.header.hiccups ? 6 : 10;
+                for (let i = stdColumns; i < columnNames.length; i++) {
+                    if (this.header.colorColumn === i) continue;
+                    if (columnNames[i] === 'info') {
+                        extractInfoColumn(data, f.extras[i - stdColumns]);
+                    } else {
+                        data.push({name: columnNames[i], value: f.extras[i - stdColumns]});
+                    }
+                }
+            }
+            // For now just return the top hit
+            break
+
+            //if (data.length > 0) {
+            //     data.push("<HR>");
+            // }
+        }
+        return data
+    }
+
+    clickedFeatures(clickState) {
+
+        // We use the cached features rather than method to avoid async load.  If the
+        // feature is not already loaded this won't work,  but the user wouldn't be mousing over it either.
+        const featureList = clickState.viewport.cachedFeatures;
+        const candidates = [];
+        if (featureList) {
+            const proportional = (this.arcType === "proportional" || this.arcType === "inView" || this.arcType === "partialInView");
+
+            for (let feature of featureList) {
+
+                if (!feature.drawState) continue
+
+                if (feature.chr1 === feature.chr2 || feature.chr === 'all') {
+                    if (proportional) {
+                        //(x-xc)^2/radiusX^2 + (y-yc)^2/radiusY^2 <= 1
+                        const {xc, yc, radiusX, radiusY} = feature.drawState;
+                        const dx = clickState.canvasX - xc;
+                        const dy = clickState.canvasY - yc;
+                        const score = (dx / radiusX) * (dx / radiusX) + (dy / radiusY) * (dy / radiusY);
+                        if (score <= 1) {
+                            candidates.push({score: 1 / score, feature});
+                        }
+                    } else {
+                        const {xc, yc, r} = feature.drawState;
+                        const dx = clickState.canvasX - xc;
+                        const dy = clickState.canvasY - yc;
+                        const score = Math.abs(Math.sqrt(dx * dx + dy * dy) - r);
+                        if (score < 5) {
+                            candidates.push({score, feature});
+                        }
+                    }
+                } else {
+                    const {x, y, w, h} = feature.drawState;
+                    const tolerance = 5;
+                    if (clickState.canvasX >= x - tolerance && clickState.canvasX <= x + w + tolerance &&
+                        clickState.canvasY >= y && clickState.canvasY <= y + h) {
+                        const score = -Math.abs(clickState.canvasX - (x + w / 2));
+                        candidates.push({score, feature});
+                        break
+                    }
+                }
+            }
+        }
+
+        if (candidates.length > 1) {
+            candidates.sort((a, b) => a.score - b.score);
+        }
+        return candidates.map((c) => c.feature)
+    }
+}
+
+function getMidpoints(feature, genome) {
+    let m1 = (feature.start1 + feature.end1) / 2;
+    let m2 = (feature.start2 + feature.end2) / 2;
+    if (feature.chr === 'all') {
+        m1 = genome.getGenomeCoordinate(feature.chr1, m1);
+        m2 = genome.getGenomeCoordinate(feature.chr2, m2);
+    }
+    if (m1 > m2) {
+        const tmp = m1;
+        m1 = m2;
+        m2 = tmp;
+    }
+    return {m1, m2}
+}
+
+function positionString(chr, start, end, strand) {
+
+    return strand && strand !== '.' ?
+        `${chr}:${numberFormatter$1(start + 1)}-${numberFormatter$1(end)} (${strand})` :
+        `${chr}:${numberFormatter$1(start + 1)}-${numberFormatter$1(end)}`
+}
+
+/**
+ * Estimate theta given the ratio of track height to 1/2 the feature width (coa).  This relationship is approximately linear.
+ */
+function estimateTheta(x) {
+    let coa = [0.01570925532366355, 0.15838444032453644, 0.3249196962329063, 0.5095254494944288, 0.7265425280053609, 0.9999999999999999];
+    let theta = [0.031415926535897934, 0.3141592653589793, 0.6283185307179586, 0.9424777960769379, 1.2566370614359172, 1.5707963267948966];
+    let idx;
+
+    for (idx = 0; idx < coa.length; idx++) {
+        if (coa[idx] > x) {
+            break
+        }
+    }
+
+    let left = idx === 0 ? 0 : coa[idx - 1];
+    let right = idx < coa.length ? coa[idx] : 1;
+    let r = (x - left) / (right - left);
+
+    let thetaLeft = idx === 0 ? 0 : theta[idx - 1];
+    let thetaRight = idx < theta.length ? theta[idx] : Math.PI / 2;
+
+    return Math.min(Math.PI/2,  (thetaLeft + r * (thetaRight - thetaLeft)))
+
+}
+
+const colorAlphaCache = new Map();
+
+function getAlphaColor(color, alpha) {
+    const key = `${color}_${alpha}`;
+    let c = colorAlphaCache.get(key);
+    if (!c) {
+        c = IGVColor.addAlpha(color, alpha);
+        colorAlphaCache.set(key, c);
+    }
+    return c
+}
+
+
+/**
+ * Called in the context of FeatureSource  (i.e. this == the feature source (a TextFeatureSource) for the track
+ *
+ * @param allFeatures
+ * @returns {[]}
+ */
+function getWGFeatures(allFeatures) {
+
+    const makeWGFeature = (f) => {
+        const wg = Object.assign({}, f);
+        wg.chr = "all";
+        wg.start = genome.getGenomeCoordinate(f.chr1, f.start1);
+        wg.end = genome.getGenomeCoordinate(f.chr2, f.end2);
+        return wg
+    };
+
+    const genome = this.genome;
+
+    // First pass -- find the max score feature
+    let maxScoreFeature;
+    let totalFeatureCount = 0;
+    for (let c of genome.wgChromosomeNames) {
+        let chrFeatures = allFeatures[c];
+        if (chrFeatures) {
+            for (let f of chrFeatures) {
+                if (!f.dup) {
+                    totalFeatureCount++;
+                    if (f.score && (!maxScoreFeature || f.score > maxScoreFeature.score)) {
+                        maxScoreFeature = f;
+                    }
+                }
+            }
+        }
+    }
+
+    const maxCount = this.maxWGCount;
+    const nBins = maxScoreFeature && maxScoreFeature.score > 0 && totalFeatureCount > maxCount ? 5 : 1;   // TODO make a function of total # of features & maxCount?
+    const featuresPerBin = Math.floor(maxCount / nBins);
+    const binSize = maxScoreFeature && maxScoreFeature.score > 0 ? Math.log(maxScoreFeature.score) / nBins : Number.MAX_SAFE_INTEGER;
+
+    let binnedFeatures = [];
+    let counts = [];
+    for (let i = 0; i < nBins; i++) {
+        counts.push([0]);
+        binnedFeatures.push([]);
+    }
+
+    for (let c of genome.wgChromosomeNames) {
+        let chrFeatures = allFeatures[c];
+        if (chrFeatures) {
+            for (let f of chrFeatures) {
+                if (!f.dup) {
+                    const bin = f.score  ? Math.max(0, Math.min(nBins - 1, Math.floor(Math.log(f.score) / binSize))) : 0;
+                    if (binnedFeatures[bin].length < featuresPerBin) {
+                        binnedFeatures[bin].push(makeWGFeature(f));
+                    } else {
+                        //Reservoir sampling
+                        const samplingProb = featuresPerBin / (counts[bin] + 1);
+                        if (Math.random() < samplingProb) {
+                            const idx = Math.floor(Math.random() * (featuresPerBin - 1));
+                            binnedFeatures[bin][idx] = makeWGFeature(f);
+                        }
+                    }
+                    counts[bin]++;
+                }
+            }
+        }
+    }
+
+    let wgFeatures;
+    if (nBins === 1) {
+        wgFeatures = binnedFeatures[0];
+    } else {
+        wgFeatures = [];
+        for (let bf of binnedFeatures) {
+            for (let f of bf) wgFeatures.push(f);
+        }
+        // Keep the feature with max score
+        if (maxScoreFeature) {
+            wgFeatures.push(makeWGFeature(maxScoreFeature));
+        }
+        wgFeatures.sort(function (a, b) {
+            return a.start - b.start
+        });
+        console.log(wgFeatures.length);
+    }
+
+
+    return wgFeatures
+}
+
+/**
+ * Extract a gff style info column for popup text.  This convention used by 10X for bedpe files
+ *     ALLELIC_FRAC=0.0375670840787;BLACK1=.;BLACK2=.;...
+ * @param data
+ * @param str
+ */
+function extractInfoColumn(data, str) {
+    const kvs = str.split(';');
+    for (let t of kvs) {
+        const kv = t.split('=');
+        if (kv.length === 2) {
+            data.push({name: kv[0], value: kv[1]});
+        }
+    }
+
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 University of California San Diego
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const isString = isString$2;
+
+const DEFAULT_COLOR = "rgb(0,0,150)";
+const DEFAULT_VISIBILITY_WINDOW = 1000000;
+const TOP_MARGIN = 10;
+const STANDARD_FIELDS = new Map([["REF", "referenceBases"], ["ALT", "alternateBases"], ["QUAL", "quality"], ["FILTER", "filter"]]);
+
+
+class VariantTrack extends TrackBase {
+
+    static defaults = {
+        displayMode: "EXPANDED",
+        sortDirection: "ASC",
+        showGenotypes: true,
+        squishedVariantHeight: 2,
+        squishedCallHeight: 1,
+        expandedCallHeight: 10,
+        expandedVGap: 2,
+        squishedVGap: 1,
+        expandedGroupGap: 10,
+        squishedGroupGap: 5,
+        featureHeight: 14,
+        noGenotypeColor: "rgb(200,180,180)",
+        noCallColor: "rgb(225, 225, 225)",
+        nonRefColor: "rgb(200, 200, 215)",
+        mixedColor: "rgb(200, 220, 200)",
+        homrefColor: "rgb(200, 200, 200)",
+        homvarColor: "rgb(17,248,254)",
+        hetvarColor: "rgb(34,12,253)",
+        colorBy: undefined,
+        visibilityWindow: undefined,
+        labelDisplayMode: undefined,
+        type: "variant"
+    }
+
+    constructor(config, browser) {
+        super(config, browser);
+    }
+
+    init(config) {
+
+        super.init(config);
+
+        this.expandedVariantHeight = config.expandedVariantHeight || config.variantHeight || 10;
+
+        this.featureSource = FeatureSource(config, this.browser.genome);
+
+        this._initColorBy = config.colorBy;
+        if (config.colorTable) {
+            this.colorTables = new Map();
+            this.colorTables.set(config.colorBy, new ColorTable(config.colorTable));
+        }
+        this._color = config.color;
+        this._strokecolor = config.strokecolor;
+        this._context_hook = config.context_hook;
+
+
+        // The number of variant rows are computed dynamically, but start with "1" by default
+        this.variantRowCount(1);
+
+    }
+
+    async postInit() {
+
+        this.header = await this.getHeader();   // cricital, don't remove'
+        if (this.disposed) return   // This track was removed during async load
+        if (undefined === this.visibilityWindow && this.config.indexed !== false) {
+            const fn = isFile(this.config.url) ? this.config.url.name : this.config.url;
+            if (isString(fn) && fn.toLowerCase().includes("gnomad")) {
+                this.visibilityWindow = 1000;  // these are known to be very dense
+            } else if (typeof this.featureSource.defaultVisibilityWindow === 'function') {
+                this.visibilityWindow = await this.featureSource.defaultVisibilityWindow();
+            } else {
+                this.visibilityWindow = DEFAULT_VISIBILITY_WINDOW;
+            }
+        }
+        return this
+
+    }
+
+    get supportsWholeGenome() {
+        return this.config.indexed === false || this.config.supportsWholeGenome === true
+    }
+
+    get color() {
+        return this._color || DEFAULT_COLOR
+    }
+
+    set color(c) {
+        this._color = c;
+        this.colorBy = undefined;
+    }
+
+    async getHeader() {
+
+        if (!this.header) {
+            if (typeof this.featureSource.getHeader === "function") {
+                const header = await this.featureSource.getHeader();
+                if (header) {
+                    this.callSets = header.callSets || [];
+                }
+                this.header = header;
+            }
+            this.sampleNames = this.callSets ? this.callSets.map(cs => cs.name) : [];
+        }
+
+        return this.header
+    }
+
+    getCallsetsLength() {
+        return this.callSets ? this.callSets.length : 0
+    }
+
+    async getFeatures(chr, start, end, bpPerPixel) {
+
+        if (this.header === undefined) {
+            this.header = await this.getHeader();
+        }
+        return this.featureSource.getFeatures({chr, start, end, bpPerPixel, visibilityWindow: this.visibilityWindow})
+    }
+
+    hasSamples() {
+        return this.getCallsetsLength() > 0
+    }
+
+    getSamples() {
+        return {
+            yOffset: this.sampleYOffset,
+            names: this.sampleNames,
+            height: this.sampleHeight
+        }
+    }
+
+    /**
+     * The required height in pixels required for the track content.   This is not the visible track height, which
+     * can be smaller (with a scrollbar) or larger.
+     *
+     * @param features
+     * @returns {*}
+     */
+    computePixelHeight(features) {
+
+        if (!features || features.length == 0) return TOP_MARGIN
+
+        const nVariantRows = (this.displayMode === "COLLAPSED") ? 1 : this.nVariantRows;
+        const vGap = (this.displayMode === "SQUISHED") ? this.squishedVGap : this.expandedVGap;
+        const variantHeight = (this.displayMode === "SQUISHED") ? this.squishedVariantHeight : this.expandedVariantHeight;
+        const callHeight = (this.displayMode === "SQUISHED") ? this.squishedCallHeight : this.expandedCallHeight;
+        const nCalls = this.showGenotypes === false ? 0 : this.getCallsetsLength() * nVariantRows;
+        const h = TOP_MARGIN + nVariantRows * (variantHeight + vGap);
+        return h + vGap + (nCalls + 1) * (callHeight + vGap)
+
+    }
+
+    variantRowCount(count) {
+        this.nVariantRows = count;
+    }
+
+    draw({context, pixelWidth, pixelHeight, bpPerPixel, bpStart, pixelTop, features}) {
+
+        IGVGraphics.fillRect(context, 0, pixelTop, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+
+        const vGap = ("SQUISHED" === this.displayMode) ? this.squishedVGap : this.expandedVGap;
+        const rowCount = ("COLLAPSED" === this.displayMode) ? 1 : this.nVariantRows;
+        const variantHeight = ("SQUISHED" === this.displayMode) ? this.squishedVariantHeight : this.expandedVariantHeight;
+        this.variantBandHeight = TOP_MARGIN + rowCount * (variantHeight + vGap);
+
+        let callSets = this.callSets;
+        if (!callSets && this._f) {
+            callSets = this._f.callSets;   // "Complementary" variant for structural variants
+        }
+        const nCalls = this.getCallsetsLength();
+        if (callSets && nCalls > 0 && this.showGenotypes !== false) {
+            IGVGraphics.strokeLine(context, 0, this.variantBandHeight, pixelWidth, this.variantBandHeight, {strokeStyle: 'rgb(224,224,224) '});
+        }
+
+        if (features) {
+
+            const callHeight = ("SQUISHED" === this.displayMode) ? this.squishedCallHeight : this.expandedCallHeight;
+            const vGap = ("SQUISHED" === this.displayMode) ? this.squishedVGap : this.expandedVGap;
+            const bpEnd = bpStart + pixelWidth * bpPerPixel + 1;
+
+            // Loop through variants.  A variant == a row in a VCF file
+            for (let variant of features) {
+
+                if (variant.end < bpStart) continue
+                if (variant.start > bpEnd) break
+
+                const variantHeight = ("SQUISHED" === this.displayMode) ? this.squishedVariantHeight : this.expandedVariantHeight;
+                const y = TOP_MARGIN + ("COLLAPSED" === this.displayMode ? 0 : variant.row * (variantHeight + vGap));
+                const h = variantHeight;
+
+                // Compute pixel width.   Minimum width is 3 pixels,  if > 5 pixels create gap between variants
+                let x = Math.round((variant.start - bpStart) / bpPerPixel);
+                let x1 = Math.round((variant.end - bpStart) / bpPerPixel);
+                let w = Math.max(1, x1 - x);
+                if (w < 3) {
+                    w = 3;
+                    x -= 1;
+                } else if (w > 5) {
+                    x += 1;
+                    w -= 2;
+                }
+                context.fillStyle = this.getColorForFeature(variant);
+                context.fillRect(x, y, w, h);
+
+                //only paint stroke if a color is defined
+                let strokecolor = this.getVariantStrokecolor(variant);
+                if (strokecolor) {
+                    context.strokeStyle = strokecolor;
+                    context.strokeRect(x, y, w, h);
+                }
+
+                // call hook if _context_hook fn is defined
+                this.callContextHook(variant, context, x, y, w, h);
+
+                variant.pixelRect = {x, y, w, h};
+
+                // Loop though the calls for this variant.  There will potentially be a call for each sample.
+                if (nCalls > 0 && this.showGenotypes !== false) {
+
+                    const nVariantRows = "COLLAPSED" === this.displayMode ? 1 : this.nVariantRows;
+                    this.sampleYOffset = this.variantBandHeight + vGap;
+                    this.sampleHeight = nVariantRows * (callHeight + vGap);  // For each sample, there is a call for each variant at this position
+
+                    let sampleNumber = 0;
+                    if (callSets && variant.calls) {
+                        for (let callSet of callSets) {
+                            const call = variant.calls[callSet.id];
+                            if (call) {
+                                const row = "COLLAPSED" === this.displayMode ? 0 : variant.row;
+                                const py = this.sampleYOffset + sampleNumber * this.sampleHeight + row * (callHeight + vGap);
+                                let allVar = true;  // until proven otherwise
+                                let allRef = true;
+                                let noCall = false;
+
+                                if (call.genotype) {
+                                    for (let g of call.genotype) {
+                                        if ('.' === g) {
+                                            noCall = true;
+                                            break
+                                        } else {
+                                            if (g !== 0) allRef = false;
+                                            if (g === 0) allVar = false;
+                                        }
+                                    }
+                                }
+
+                                if (!call.genotype) {
+                                    context.fillStyle = this.noGenotypeColor;
+                                } else if (noCall) {
+                                    context.fillStyle = this.noCallColor;
+                                } else if (allRef) {
+                                    context.fillStyle = this.homrefColor;
+                                } else if (allVar) {
+                                    context.fillStyle = this.homvarColor;
+                                } else {
+                                    context.fillStyle = this.hetvarColor;
+                                }
+
+                                context.fillRect(x, py, w, callHeight);
+
+                                callSet.pixelRect = {x, y: py, w, h: callHeight};
+                            }
+                            sampleNumber++;
+                        }
+                    }
+                }
+            }
+
+        } else {
+            console.log("No feature list");
+        }
+    };
+
+
+    getColorForFeature(variant) {
+
+        const v = variant._f || variant;
+        let variantColor;
+
+        if (this.colorBy) {
+            const colorBy = this.colorBy;
+            let value;
+            if (v.info.hasOwnProperty(colorBy)) {
+                value = v.info[colorBy];
+            } else if (STANDARD_FIELDS.has(colorBy)) {
+                const key = STANDARD_FIELDS.get(colorBy);
+                value = v[key];
+            }
+            variantColor = this.getVariantColorTable(colorBy).getColor(value);
+            if (!variantColor) {
+                variantColor = "gray";
+            }
+
+        } else if (this._color) {
+            variantColor = (typeof this._color === "function") ? this._color(variant) : this._color;
+        } else if ("NONVARIANT" === v.type) {
+            variantColor = this.nonRefColor;
+        } else if ("MIXED" === v.type) {
+            variantColor = this.mixedColor;
+        } else {
+            variantColor = this.color;
+        }
+        return variantColor
+    }
+
+
+    getVariantStrokecolor(variant) {
+
+        const v = variant._f || variant;
+        let variantStrokeColor;
+
+        if (this._strokecolor) {
+            variantStrokeColor = (typeof this._strokecolor === "function") ? this._strokecolor(v) : this._strokecolor;
+        } else {
+            variantStrokeColor = undefined;
+        }
+        return variantStrokeColor
+    }
+
+    callContextHook(variant, context, x, y, w, h) {
+        if (this._context_hook) {
+            if (typeof this._context_hook === "function") {
+                const v = variant._f || variant;
+
+                context.save();
+                this._context_hook(v, context, x, y, w, h);
+                context.restore();
+            }
+        }
+    }
+
+    clickedFeatures(clickState) {
+
+        let featureList = super.clickedFeatures(clickState);
+
+        const vGap = (this.displayMode === 'EXPANDED') ? this.expandedVGap : this.squishedVGap;
+        const callHeight = vGap + ("SQUISHED" === this.displayMode ? this.squishedCallHeight : this.expandedCallHeight);
+        // Find the variant row (i.e. row assigned during feature packing)
+        const yOffset = clickState.y;
+        if (yOffset <= this.variantBandHeight) {
+            // Variant
+            const variantHeight = ("SQUISHED" === this.displayMode) ? this.squishedVariantHeight : this.expandedVariantHeight;
+            const variantRow = Math.floor((yOffset - TOP_MARGIN) / (variantHeight + vGap));
+            if ("COLLAPSED" !== this.displayMode) {
+                featureList = featureList.filter(f => f.row === variantRow);
+            }
+        } else if (this.callSets) {
+            const callSets = this.callSets;
+            const sampleY = yOffset - this.variantBandHeight;
+            const sampleRow = Math.floor(sampleY / this.sampleHeight);
+            if (sampleRow >= 0 && sampleRow < callSets.length) {
+                const variantRow = Math.floor((sampleY - sampleRow * this.sampleHeight) / callHeight);
+                const variants = "COLLAPSED" === this.displayMode ? featureList : featureList.filter(f => f.row === variantRow);
+                const cs = callSets[sampleRow];
+                featureList = variants.map(v => {
+                    const call = v.calls[cs.id];
+                    expandGenotype(call, v);
+                    return call
+                });
+            }
+        }
+
+        return featureList
+    }
+
+
+    /**
+     * Return "popup data" for feature @ genomic location.  Data is an array of key-value pairs
+     */
+    popupData(clickState, featureList) {
+
+        if (featureList === undefined) featureList = this.clickedFeatures(clickState);
+        const genomicLocation = clickState.genomicLocation;
+        const genomeID = this.browser.genome.id;
+        const sampleInformation = this.browser.sampleInformation;
+
+        let popupData = [];
+        for (let v of featureList) {
+
+            const f = v._f || v;    // Get real variant from psuedo-variant, e.g. whole genome or SV mate
+
+            if (popupData.length > 0) {
+                popupData.push({html: '<hr style="border-top-width:2px ;border-color: #c9c3ba" />'});
+            }
+
+            if (typeof f.popupData === 'function') {
+                const v = f.popupData(genomicLocation, genomeID);
+                Array.prototype.push.apply(popupData, v);
+            } else {
+                // Assume this is a call (genotype)
+                const call = f;
+
+                if (call.callSetName !== undefined) {
+                    popupData.push({name: 'Name', value: call.callSetName});
+                }
+
+                if (call.genotypeName) {
+                    popupData.push({name: 'Genotype', value: call.genotypeName});
+                }
+
+                if (call.phaseset !== undefined) {
+                    popupData.push({name: 'Phase set', value: call.phaseset});
+                }
+                if (call.genotypeLikelihood !== undefined) {
+                    popupData.push({name: 'genotypeLikelihood', value: call.genotypeLikelihood.toString()});
+                }
+
+                if (sampleInformation) {
+                    var attr = sampleInformation.getAttributes(call.callSetName);
+                    if (attr) {
+                        Object.keys(attr).forEach(function (attrName) {
+                            var displayText = attrName.replace(/([A-Z])/g, " $1");
+                            displayText = displayText.charAt(0).toUpperCase() + displayText.slice(1);
+                            popupData.push({name: displayText, value: attr[attrName]});
+                        });
+                    }
+                }
+
+                var infoKeys = Object.keys(call.info);
+                if (infoKeys.length) {
+                    popupData.push('<hr/>');
+                }
+                infoKeys.forEach(function (key) {
+                    popupData.push({name: key, value: decodeURIComponent(call.info[key])});
+                });
+            }
+        }
+        return popupData
+
+    }
+
+
+// VariantTrack.prototype.contextMenuItemList = function (clickState) {
+//
+//     const self = this;
+//     const menuItems = [];
+//
+//     const featureList = this.clickedFeatures(clickState);
+//
+//     if (this.callSets && featureList && featureList.length > 0) {
+//
+//         featureList.forEach(function (variant) {
+//
+//             if ('str' === variant.type) {
+//
+//                 menuItems.push({
+//                     label: 'Sort by allele length',
+//                     click: function () {
+//                         sortCallSetsByAlleleLength(self.callSets, variant, self.sortDirection);
+//                         self.sortDirection = (self.sortDirection === "ASC") ? "DESC" : "ASC";
+//                         self.trackView.repaintViews();
+//                     }
+//                 });
+//
+//             }
+//
+//         });
+//     }
+//
+//
+//     function sortCallSetsByAlleleLength(callSets, variant, direction) {
+//         var d = (direction === "DESC") ? 1 : -1;
+//         Object.keys(callSets).forEach(function (property) {
+//             callSets[property].sort(function (a, b) {
+//                 var aNan = isNaN(variant.calls[a.id].genotype[0]);
+//                 var bNan = isNaN(variant.calls[b.id].genotype[0]);
+//                 if (aNan && bNan) {
+//                     return 0;
+//                 } else if (aNan) {
+//                     return 1;
+//                 } else if (bNan) {
+//                     return -1;
+//                 } else {
+//                     var a0 = getAlleleString(variant.calls[a.id], variant, 0);
+//                     var a1 = getAlleleString(variant.calls[a.id], variant, 1);
+//                     var b0 = getAlleleString(variant.calls[b.id], variant, 0);
+//                     var b1 = getAlleleString(variant.calls[b.id], variant, 1);
+//                     var result = Math.max(b0.length, b1.length) - Math.max(a0.length, a1.length);
+//                     if (result === 0) {
+//                         result = Math.min(b0.length, b1.length) - Math.min(a0.length, a1.length);
+//                     }
+//                     return d * result;
+//                 }
+//             });
+//         });
+//     }
+//
+//
+//     return menuItems;
+//
+// };
+
+    menuItemList() {
+
+        const menuItems = [];
+
+        // color-by INFO attribute
+        if (this.header.INFO) {
+            //Code below will present checkboxes for all info fields of type "String".   Wait until this is requested
+            //const stringInfoKeys = Object.keys(this.header.INFO).filter(key => "String" === this.header.INFO[key].Type);
+
+            // For now stick to explicit info fields (well, exactly 1 for starters)
+            if (this.header.INFO) {
+                //const stringInfoKeys = Object.keys(this.header.INFO).filter(key => this.header.INFO[key].Type === "String")
+                const stringInfoKeys = this.header.INFO.SVTYPE ? ['SVTYPE'] : [];
+                if (this._initColorBy && this._initColorBy !== 'SVTYPE') {
+                    stringInfoKeys.push(this._initColorBy);
+                }
+                if (stringInfoKeys.length > 0) {
+                    menuItems.push('<hr/>');
+                    const $e = $$1('<div class="igv-track-menu-category igv-track-menu-border-top">');
+                    $e.text('Color by:');
+                    menuItems.push({name: undefined, object: $e, click: undefined, init: undefined});
+                    stringInfoKeys.sort();
+                    for (let item of stringInfoKeys) {
+                        const selected = (this.colorBy === item);
+                        const label = item ? item : 'None';
+                        menuItems.push(this.colorByCB({key: item, label: label}, selected));
+                    }
+                    menuItems.push(this.colorByCB({key: undefined, label: 'None'}, this.colorBy === undefined));
+                    menuItems.push('<hr/>');
+                }
+            }
+        }
+
+        if (this.getCallsetsLength() > 0) {
+            menuItems.push({object: $$1('<div class="igv-track-menu-border-top">')});
+            menuItems.push({
+                object: $$1(createCheckbox("Show Genotypes", this.showGenotypes)),
+                click: () => {
+                    this.showGenotypes = !this.showGenotypes;
+                    //adjustTrackHeight();
+                    this.trackView.checkContentHeight();
+                    this.trackView.repaintViews();
+                }
+            });
+        }
+
+        menuItems.push({object: $$1('<div class="igv-track-menu-border-top">')});
+        for (let displayMode of ["COLLAPSED", "SQUISHED", "EXPANDED"]) {
+            var lut =
+                {
+                    "COLLAPSED": "Collapse",
+                    "SQUISHED": "Squish",
+                    "EXPANDED": "Expand"
+                };
+
+            menuItems.push(
+                {
+                    object: $$1(createCheckbox(lut[displayMode], displayMode === this.displayMode)),
+                    click: () => {
+                        this.displayMode = displayMode;
+                        this.trackView.checkContentHeight();
+                        this.trackView.repaintViews();
+                    }
+                });
+        }
+
+        // Experimental JBrowse circular view integration
+        if (this.browser.circularView) {
+
+            menuItems.push('<hr>');
+            menuItems.push({
+                label: 'Add SVs to circular view',
+                click: () => {
+                    for (let viewport of this.trackView.viewports) {
+                        this.sendChordsForViewport(viewport);
+                    }
+                }
+            });
+        }
+
+        return menuItems
+    }
+
+
+    contextMenuItemList(clickState) {
+
+        // Experimental JBrowse circular view integration
+        if (this.browser.circularView) {
+            const viewport = clickState.viewport;
+            const list = [];
+
+            list.push({
+                label: 'Add SVs to Circular View',
+                click: () => {
+                    this.sendChordsForViewport(viewport);
+                }
+            });
+
+            list.push('<hr/>');
+            return list
+        }
+    }
+
+
+    sendChordsForViewport(viewport) {
+        const refFrame = viewport.referenceFrame;
+        let inView;
+        if ("all" === refFrame.chr) {
+            const all = this.featureSource.getAllFeatures();
+            const arrays = Object.keys(all).map(k => all[k]);
+            inView = [].concat(...arrays);
+        } else {
+            inView = this.featureSource.featureCache.queryFeatures(refFrame.chr, refFrame.start, refFrame.end);
+
+        }
+
+        const chords = makeVCFChords(inView);
+        sendChords(chords, this, refFrame, 0.5);
+    }
+
+    /**
+     * Create a "color by" checkbox menu item, optionally initially checked
+     * @param menuItem
+     * @param showCheck
+     * @returns {{init: undefined, name: undefined, click: clickHandler, object: (jQuery|HTMLElement|jQuery.fn.init)}}
+     */
+    colorByCB(menuItem, showCheck) {
+
+        const $e = $$1(createCheckbox(menuItem.label, showCheck));
+        const clickHandler = () => {
+
+            if (menuItem.key === this.colorBy) {
+                this.colorBy = undefined;
+                delete this.config.colorBy;
+                this.trackView.repaintViews();
+            } else {
+                this.colorBy = menuItem.key;
+                this.config.colorBy = menuItem.key;
+                this.trackView.repaintViews();
+            }
+
+        };
+
+        return {name: undefined, object: $e, click: clickHandler, init: undefined}
+    }
+
+    getState() {
+
+        const config = super.getState();
+        if (this._color && typeof this._color !== "function") {
+            config.color = this._color;
+        }
+        return config
+
+    }
+
+    getVariantColorTable(key) {
+
+        if (!this.colorTables) {
+            this.colorTables = new Map();
+        }
+
+        if (!this.colorTables.has(key)) {
+            let tbl;
+            switch (key) {
+                case "SVTYPE" :
+                    tbl = SV_COLOR_TABLE;
+                    break
+                default:
+                    tbl = new PaletteColorTable("Set1");
+            }
+            this.colorTables.set(key, tbl);
+        }
+        return this.colorTables.get(key)
+    }
+}
+
+
+function expandGenotype(call, variant) {
+
+    if (call.genotype) {
+        let gt = '';
+        if (variant.alternateBases === ".") {
+            gt = "No Call";
+        } else {
+            const altArray = variant.alternateBases.split(",");
+            for (let allele of call.genotype) {
+                if (gt.length > 0) {
+                    gt += "|";
+                }
+                if ('.' === allele) {
+                    gt += '.';
+                } else if (allele === 0) {
+                    gt += variant.referenceBases;
+                } else {
+                    let alt = altArray[allele - 1].replace("<", "&lt;");
+                    gt += alt;
+                }
+            }
+        }
+        call.genotypeName = gt;
+    }
+}
+
+
+const SV_COLOR_TABLE = new ColorTable({
+    'DEL': '#ff2101',
+    'INS': '#001888',
+    'DUP': '#028401',
+    'INV': '#008688',
+    'CNV': '#8931ff',
+    'BND': '#891100',
+    '*': '#002eff'
+});
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class EqtlTrack extends TrackBase {
+
+    constructor(config, browser) {
+
+        super(config, browser);
+    }
+
+    init(config) {
+        super.init(config);
+
+        this.name = config.name;
+        this.pValueField = config.pValueField || "pValue";
+        this.geneField = config.geneField || "geneSymbol";
+        this.snpField = config.snpField || "snp";
+
+        const min = config.minLogP || config.min;
+        const max = config.maxLogP || config.max;
+        this.dataRange = {
+            min: min || 3.5,
+            max: max || 25
+        };
+        if (!max) {
+            this.autoscale = true;
+        } else {
+            this.autoscale = config.autoscale;
+        }
+        this.autoscalePercentile = (config.autoscalePercentile === undefined ? 98 : config.autoscalePercentile);
+
+
+        this.background = config.background;    // No default
+        this.divider = config.divider || "rgb(225,225,225)";
+        this.dotSize = config.dotSize || 2;
+        this.height = config.height || 100;
+        this.autoHeight = false;
+        this.disableButtons = config.disableButtons;
+
+        // Limit visibility window to 2 mb,  gtex server gets flaky beyond that
+        this.visibilityWindow = config.visibilityWindow === undefined ?
+            2000000 : config.visibilityWindow >= 0 ? Math.min(2000000, config.visibilityWindow) : 2000000;
+
+        this.featureSource = FeatureSource(config, this.browser.genome);
+
+        GtexUtils.gtexLoaded = true;
+    }
+
+    paintAxis(ctx, pixelWidth, pixelHeight) {
+
+        const yScale = (this.dataRange.max - this.dataRange.min) / pixelHeight;
+
+        const font = {
+            'font': 'normal 10px Arial',
+            'textAlign': 'right',
+            'strokeStyle': "black"
+        };
+
+        IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+
+        // Determine a tick spacing such that there is at least 10 pixels between ticks
+
+        const n = Math.ceil((this.dataRange.max - this.dataRange.min) * 10 / pixelHeight);
+
+        for (let p = 4; p <= this.dataRange.max; p += n) {
+
+            // TODO: Dashes may not actually line up with correct scale. Ask Jim about this
+
+            const ref = 0.85 * pixelWidth;
+            const x1 = ref - 5;
+            const x2 = ref;
+            const y = pixelHeight - (p - this.dataRange.min) / yScale;
+
+            IGVGraphics.strokeLine(ctx, x1, y, x2, y, font); // Offset dashes up by 2 pixel
+
+            if (y > 8) {
+                IGVGraphics.fillText(ctx, p, x1 - 1, y + 2, font);
+            } // Offset numbers down by 2 pixels;
+        }
+
+        font['textAlign'] = 'center';
+
+        IGVGraphics.fillText(ctx, "-log10(pvalue)", pixelWidth / 4, pixelHeight / 2, font, {rotate: {angle: -90}});
+
+    };
+
+    async getFeatures(chr, start, end) {
+
+        const pValueField = this.pValueField;
+        const visibilityWindow = this.visibilityWindow;
+        const features = await this.featureSource.getFeatures({chr, start, end, visibilityWindow});
+        features.forEach(function (f) {
+            f.value = f[pValueField];
+        });
+        return features
+    }
+
+    draw(options) {
+
+        const ctx = options.context;
+
+        const pixelWidth = options.pixelWidth;
+        const pixelHeight = options.pixelHeight;
+
+        if (this.background) {
+            IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': this.background});
+        }
+        IGVGraphics.strokeLine(ctx, 0, pixelHeight - 1, pixelWidth, pixelHeight - 1, {'strokeStyle': this.divider});
+
+        const drawEqtls = (drawSelected) => {
+
+            const radius = drawSelected ? 2 * this.dotSize : this.dotSize;
+            const bpStart = options.bpStart;
+            const yScale = (this.dataRange.max - this.dataRange.min) / pixelHeight;
+            const selection = options.referenceFrame.selection;
+
+            for (let eqtl of options.features) {
+
+                const px = (eqtl.start - bpStart + 0.5) / options.bpPerPixel;
+                if (px < 0) continue
+                else if (px > pixelWidth) break
+
+                const snp = eqtl.snp.toUpperCase();
+                const geneName = eqtl[this.geneField].toUpperCase();
+
+                const isSelected = selection &&
+                    (selection.snp === snp || selection.gene === geneName);
+
+                if (!drawSelected || isSelected) {
+
+                    // Add eqtl's gene to the selection if this is the selected snp.
+                    // TODO -- this should not be done here in the rendering code.
+                    if (selection && selection.snp === snp) {
+                        selection.addGene(geneName);
+                    }
+
+                    var mLogP = -Math.log(eqtl[this.pValueField]) / Math.LN10;
+                    if (mLogP >= this.dataRange.min) {
+                        let capped;
+                        if (mLogP > this.dataRange.max) {
+                            mLogP = this.dataRange.max;
+                            capped = true;
+                        } else {
+                            capped = false;
+
+                        }
+
+                        const py = Math.max(0 + radius, pixelHeight - Math.round((mLogP - this.dataRange.min) / yScale));
+                        eqtl.px = px;
+                        eqtl.py = py;
+                        eqtl.radius = radius;
+
+                        let color;
+                        if (drawSelected && selection) {
+                            color = selection.colorForGene(geneName);
+                            IGVGraphics.setProperties(ctx, {fillStyle: color, strokeStyle: "black"});
+                        } else {
+                            color = capped ? "rgb(150, 150, 150)" : "rgb(180, 180, 180)";
+                            IGVGraphics.setProperties(ctx, {fillStyle: color, strokeStyle: color});
+                        }
+
+                        IGVGraphics.fillCircle(ctx, px, py, radius);
+                        IGVGraphics.strokeCircle(ctx, px, py, radius);
+                    }
+                }
+            }
+        };
+
+        // Draw in two passes, with "selected" eqtls drawn last
+        drawEqtls(false);
+        drawEqtls(true);
+
+    }
+
+    /**
+     * Return "popup data" for feature @ genomic location.  Data is an array of key-value pairs
+     */
+    popupData(clickState, features) {
+
+        if(features === undefined) features = clickState.viewport.cachedFeatures;
+        if (!features || features.length === 0) return []
+
+        const tolerance = 3;
+        const tissue = this.name;
+        const popupData = [];
+
+        for (let feature of features) {
+            // Hit test --use square vs circle for efficiency (no sqrt)
+            if (Math.abs(feature.px - clickState.canvasX) < (feature.radius + tolerance) &&
+                Math.abs(feature.py - clickState.canvasY) < (feature.radius + tolerance)) {
+
+                if (popupData.length > 0) {
+                    popupData.push('<hr/>');
+                }
+                popupData.push(
+                    {name: "snp id", value: feature.snp},
+                    {name: "gene id", value: feature.geneId},
+                    {name: "gene name", value: feature.geneName},
+                    {name: "p value", value: feature.pValue},
+                    {name: "tissue", value: tissue});
+
+            }
+        }
+
+        return popupData
+    }
+
+    menuItemList() {
+        return MenuUtils.numericDataMenuItems(this.trackView)
+    }
+
+    doAutoscale(featureList) {
+
+        if (featureList.length > 0) {
+
+            var values = featureList
+                .map(function (eqtl) {
+                    return -Math.log(eqtl.value) / Math.LN10
+                });
+
+            this.dataRange.max = IGVMath.percentile(values, this.autoscalePercentile);
+        } else {
+            // No features -- default
+            const max = this.config.maxLogP || this.config.max;
+            this.dataRange.max = max || 25;
+        }
+
+        return this.dataRange
+    }
+
+}
+
+/**
+ * Colors used for coding omosomes
+ */
+
+const GWASColors = {
+    "X": "rgb(204, 153, 0)",
+    "Y": "rgb(153, 204, 0)",
+    "Un": "darkGray)",
+    "1": "rgb(80, 80, 255)",
+    "2": "rgb(206, 61, 50)",
+    "2a": "rgb(210, 65, 55)",
+    "2b": "rgb(215, 70, 60)",
+    "3": "rgb(116, 155, 88)",
+    "4": "rgb(240, 230, 133)",
+    "5": "rgb(70, 105, 131)",
+    "6": "rgb(186, 99, 56)",
+    "7": "rgb(93, 177, 221)",
+    "8": "rgb(128, 34, 104)",
+    "9": "rgb(107, 215, 107)",
+    "10": "rgb(213, 149, 167)",
+    "11": "rgb(146, 72, 34)",
+    "12": "rgb(131, 123, 141)",
+    "13": "rgb(199, 81, 39)",
+    "14": "rgb(213, 143, 92)",
+    "15": "rgb(122, 101, 165)",
+    "16": "rgb(228, 175, 105)",
+    "17": "rgb(59, 27, 83)",
+    "18": "rgb(205, 222, 183)",
+    "19": "rgb(97, 42, 121)",
+    "20": "rgb(174, 31, 99)",
+    "21": "rgb(231, 199, 111)",
+    "22": "rgb(90, 101, 94)",
+    "23": "rgb(204, 153, 0)",
+    "24": "rgb(153, 204, 0)",
+    "25": "rgb(51, 204, 0)",
+    "26": "rgb(0, 204, 51)",
+    "27": "rgb(0, 204, 153)",
+    "28": "rgb(0, 153, 204)",
+    "29": "rgb(10, 71, 255)",
+    "30": "rgb(71, 117, 255)",
+    "31": "rgb(255, 194, 10)",
+    "32": "rgb(255, 209, 71)",
+    "33": "rgb(153, 0, 51)",
+    "34": "rgb(153, 26, 0)",
+    "35": "rgb(153, 102, 0)",
+    "36": "rgb(128, 153, 0)",
+    "37": "rgb(51, 153, 0)",
+    "38": "rgb(0, 153, 26)",
+    "39": "rgb(0, 153, 102)",
+    "40": "rgb(0, 128, 153)",
+    "41": "rgb(0, 51, 153)",
+    "42": "rgb(26, 0, 153)",
+    "43": "rgb(102, 0, 153)",
+    "44": "rgb(153, 0, 128)",
+    "45": "rgb(214, 0, 71)",
+    "46": "rgb(255, 20, 99)",
+    "47": "rgb(0, 214, 143)",
+    "48": "rgb(20, 255, 177)"
+};
+
+//  aliasing
+for (let key of Object.keys(GWASColors)) {
+    const altName = "chr" + key;
+    GWASColors[altName] = GWASColors[key];
+}
+
+// romanizing
+for(let a = 1; a <= 48; a++) {
+    if(a === 10) continue   // Don't overide "X"
+    const roman = romanize(a);
+    GWASColors[roman] = GWASColors[a.toString()];
+}
+
+
+function romanize (num) {
+    if (!+num) return false;
+    var digits = String(+num).split('');
+    var key = ['','C','CC','CCC','CD','D','DC','DCC','DCCC','CM',
+        '','X','XX','XXX','XL','L','LX','LXX','LXXX','XC',
+        '','I','II','III','IV','V','VI','VII','VIII','IX'];
+    var roman = '', i = 3;
+    while (i--) roman = (key[+digits.pop() + (i * 10)] || '') + roman;
+    return Array(+digits.join('') + 1).join('M') + roman;
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const DEFAULT_POPOVER_WINDOW = 100000000;
+
+//const type = "gwas";
+
+class GWASTrack extends TrackBase {
+
+    constructor(config, browser) {
+
+        super(config, browser);
+    }
+
+    init(config) {
+
+        super.init(config);
+
+        this.useChrColors = config.useChrColors === undefined ? true : config.useChrColors;
+        this.trait = config.trait;
+        this.posteriorProbability = config.posteriorProbability;
+        this.valueProperty = "bed" === config.format ? "score" : "value";
+        this.height = config.height || 100;   // The preferred height
+        this.autoscale = config.autoscale;
+        this.autoscalePercentile = config.autoscalePercentile === undefined ? 98 : config.autoscalePercentile;
+        this.background = config.background;    // No default
+        this.divider = config.divider || "rgb(225,225,225)";
+        this.dotSize = config.dotSize || 3;
+        this.popoverWindow = (config.popoverWindow === undefined ? DEFAULT_POPOVER_WINDOW : config.popoverWindow);
+
+        // Color settings
+        if (this.useChrColors) {
+            this.colorScale = new ColorTable(config.colorTable || GWASColors);
+        } else if (config.color) {
+            this.colorScale = new ConstantColorScale(config.color);
+        } else {
+            this.colorScale =
+                new BinnedColorScale(config.colorScale ||
+                    {
+                        thresholds: [5e-8, 5e-4, 0.5],
+                        colors: ["rgb(255,50,50)", "rgb(251,100,100)", "rgb(251,170,170)", "rgb(227,238,249)"],
+                    });
+        }
+
+        this.featureSource = FeatureSource(config, this.browser.genome);
+    }
+
+    async postInit() {
+
+        if (typeof this.featureSource.getHeader === "function") {
+            this.header = await this.featureSource.getHeader();
+            if (this.disposed) return   // This track was removed during async load
+        }
+
+        // Set properties from track line
+        if (this.header) {
+            this.setTrackProperties(this.header);   // setTrackProperties defined in TrackBase
+        }
+
+        // Set initial range if specfied, unless autoscale == true
+        if (!this.autoscale) {
+            if (this.posteriorProbability) {
+                this.dataRange = {
+                    min: this.config.min === undefined ? 0 : this.config.min,
+                    max: this.config.max === undefined ? 1 : this.config.max
+                };
+            } else {
+                this.dataRange = {
+                    min: this.config.min === undefined ? 0 : this.config.min,
+                    max: this.config.max === undefined ? 25 : this.config.max
+                };
+            }
+        }
+
+        return this
+
+    }
+
+
+    get supportsWholeGenome() {
+        return true
+    }
+
+    async getFeatures(chr, start, end) {
+        const visibilityWindow = this.visibilityWindow;
+        return this.featureSource.getFeatures({chr, start, end, visibilityWindow})
+    }
+
+    draw(options) {
+
+        const featureList = options.features;
+        const ctx = options.context;
+        const pixelWidth = options.pixelWidth;
+        const pixelHeight = options.pixelHeight;
+        if (this.background) {
+            IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': this.background});
+        }
+        IGVGraphics.strokeLine(ctx, 0, pixelHeight - 1, pixelWidth, pixelHeight - 1, {'strokeStyle': this.divider});
+
+        if (featureList) {
+
+            const bpPerPixel = options.bpPerPixel;
+            const bpStart = options.bpStart;
+            const bpEnd = bpStart + pixelWidth * bpPerPixel + 1;
+            for (let variant of featureList) {
+                const pos = variant.start;
+                if (pos < bpStart) continue
+                if (pos > bpEnd) break
+
+                let val;
+                if (this.posteriorProbability) {
+                    val = variant[this.valueProperty];
+                } else {
+                    const pvalue = variant[this.valueProperty];
+                    if (!pvalue) continue
+                    val = -Math.log10(pvalue);
+                }
+
+                const colorKey = this.useChrColors ?
+                    variant._f ? variant._f.chr : variant.chr :
+                    val;
+
+                const color = this.colorScale.getColor(colorKey);
+                const yScale = (this.dataRange.max - this.dataRange.min) / pixelHeight;
+                const px = Math.round((pos - bpStart) / bpPerPixel);
+                const py = Math.max(this.dotSize, pixelHeight - Math.round((val - this.dataRange.min) / yScale));
+
+                if (color) {
+                    IGVGraphics.setProperties(ctx, {fillStyle: color, strokeStyle: "black"});
+                }
+                IGVGraphics.fillCircle(ctx, px, py, this.dotSize);
+                variant.px = px;
+                variant.py = py;
+            }
+        }
+    }
+
+    paintAxis(ctx, pixelWidth, pixelHeight) {
+
+        IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+        var font = {
+            'font': 'normal 10px Arial',
+            'textAlign': 'right',
+            'strokeStyle': "black"
+        };
+
+        const yScale = (this.dataRange.max - this.dataRange.min) / pixelHeight;
+        if (this.posteriorProbability) {
+            const n = 0.1;
+            for (let p = this.dataRange.min; p < this.dataRange.max; p += n) {
+                const yp = pixelHeight - Math.round((p - this.dataRange.min) / yScale);
+                IGVGraphics.strokeLine(ctx, 45, yp - 2, 50, yp - 2, font); // Offset dashes up by 2 pixel
+                IGVGraphics.fillText(ctx, p.toFixed(1), 44, yp + 2, font); // Offset numbers down by 2 pixels;
+            }
+        } else {
+            const n = Math.ceil((this.dataRange.max - this.dataRange.min) * 10 / pixelHeight);
+            for (let p = this.dataRange.min; p < this.dataRange.max; p += n) {
+                const yp = pixelHeight - Math.round((p - this.dataRange.min) / yScale);
+                IGVGraphics.strokeLine(ctx, 45, yp, 50, yp, font); // Offset dashes up by 2 pixel
+                IGVGraphics.fillText(ctx, Math.floor(p), 44, yp + 4, font); // Offset numbers down by 2 pixels;
+            }
+        }
+
+        font['textAlign'] = 'center';
+        if (this.posteriorProbability) {
+            IGVGraphics.fillText(ctx, "PPA", pixelWidth / 2, pixelHeight / 2, font, {rotate: {angle: -90}});
+        } else {
+            IGVGraphics.fillText(ctx, "-log10(pvalue)", pixelWidth / 2, pixelHeight / 2, font, {rotate: {angle: -90}});
+        }
+    }
+
+    popupData(clickState, features) {
+
+        if (features === undefined) features = clickState.viewport.cachedFeatures;
+
+        let data = [];
+        const track = clickState.viewport.trackView.track;
+
+        if (features) {
+            let count = 0;
+            for (let f of features) {
+                const xDelta = Math.abs(clickState.canvasX - f.px);
+                const yDelta = Math.abs(clickState.canvasY - f.py);
+                const value = f[this.valueProperty];
+                if (xDelta < this.dotSize && yDelta < this.dotSize) {
+                    if (count > 0) {
+                        data.push("<HR/>");
+                    }
+                    if (count == 5) {
+                        data.push("...");
+                        break
+                    }
+                    if (typeof f.popupData === 'function') {
+                        data = data.concat(f.popupData());
+                    } else {
+                        const chr = f.realChr || f.chr;
+                        const pos = (f.realStart || f.start) + 1;
+                        data.push({name: 'chromosome', value: chr});
+                        data.push({name: 'position', value: pos});
+                        data.push({name: 'name', value: f.name});
+                        if (track.posteriorProbability) {
+                            data.push({name: 'posterior probability', value: value});
+                        } else {
+                            data.push({name: 'pValue', value: value});
+                        }
+                    }
+                    count++;
+                }
+            }
+        }
+
+        return data
+    }
+
+    menuItemList() {
+        return MenuUtils.numericDataMenuItems(this.trackView)
+    }
+
+    doAutoscale(featureList) {
+
+        if (featureList.length > 0) {
+            // posterior probabilities are treated without modification, but we need to take a negative logarithm of P values
+            const valueProperty = this.valueProperty;
+            const posterior = this.posteriorProbability;
+            const features =
+                featureList.map(function (feature) {
+                    const v = feature[valueProperty];
+                    return {value: posterior ? v : -Math.log(v) / Math.LN10}
+                });
+            this.dataRange = doAutoscale(features);
+
+        } else {
+            // No features -- pick something reasonable for PPAs and p-values
+            if (this.posteriorProbability) {
+                this.dataRange = {min: this.config.min || 0, max: this.config.max || 1};
+            } else {
+                this.dataRange = {min: this.config.max || 25, max: this.config.min || 0};
+            }
+        }
+
+        return this.dataRange
+    }
+
+}
+
+const X_PIXEL_DIFF_THRESHOLD = 1;
+
+class GCNVTrack extends TrackBase {
+
+    constructor(config, browser) {
+        super(config, browser);
+    }
+
+    init(config) {
+        super.init(config);
+
+        this.autoscale = config.autoscale || config.max === undefined;
+        this.dataRange = {
+            min: config.min || 0,
+            max: config.max
+        };
+
+        this.windowFunction = config.windowFunction || "mean";
+        this.paintAxis = paintAxis;
+        this.graphType = config.graphType || "bar";
+
+        //hack to avoid creating feature source multiple times.  If config.type is not set the file must be read
+        //to determine type, which results in creation of a feature source.
+        if (config._featureSource) {
+            this.featureSource = config._featureSource;
+            delete config._featureSource;
+        } else {
+            this.featureSource = FeatureSource(this.config, this.browser.genome);
+        }
+
+        // Visibility window hardcoded to -1  (== whole chromosome).  Draw method needs feature beyond current view,
+        // when/if this is resolved visibilityWindow can be used.
+        this.visibilityWindow = -1;
+        this.featureSource.visibilityWindow = this.visibilityWindow;
+    }
+
+    async postInit() {
+
+        if (typeof this.featureSource.getHeader === "function") {
+            this.header = await this.featureSource.getHeader();
+            if(this.disposed) return;   // This track was removed during async load
+            this.sampleNames = this.header.columnNames.slice(3);
+
+            // Set generic properties from track line
+            this.setTrackProperties(this.header);   // setTrackProperties defined in TrackBase
+
+            // set option to highlight sample track line on click
+            if (this.header.hasOwnProperty("clickToHighlight")) {
+                let colour = this.header["clickToHighlight"];
+                this.config.clickToHighlight = colour;
+                this.config.samplesClickedToHighlight = {};
+            }
+
+            // Special track line properties
+            if (this.header.hasOwnProperty("highlight")) {
+                this.config.highlightSamples = {};
+                let v = this.header["highlight"];
+                if (!Array.isArray(v)) v = [v];
+                for (let h of v) {
+                    const tokens = h.split(";");
+                    if (tokens.length === 2) {
+                        this.config.highlightSamples[tokens[0]] = tokens[1];
+                    }
+
+                }
+            }
+        }
+    }
+
+    menuItemList() {
+        return MenuUtils.numericDataMenuItems(this.trackView)
+    }
+
+    async getFeatures(chr, start, end) {
+        const chrFeatures = await this.featureSource.getFeatures({
+            chr,
+            start: 0,
+            end: Number.MAX_SAFE_INTEGER,
+            visibilityWindow: this.visibilityWindow
+        });
+        let prevIndex = undefined;
+        let nextIndex = undefined;
+        for (let i = 1; i < chrFeatures.length - 1; i++) {
+            if (prevIndex === undefined && chrFeatures[i].end > start) {
+                prevIndex = i - 1;
+            }
+            if (nextIndex === undefined && chrFeatures[i].start > end) {
+                nextIndex = i + 1;
+                break
+            }
+        }
+        if (prevIndex === undefined) prevIndex = 0;
+        if (nextIndex === undefined) nextIndex = chrFeatures.length;
+        return chrFeatures.slice(prevIndex, nextIndex)
+    }
+
+    draw(options) {
+
+        const {features, context, bpPerPixel, bpStart, pixelWidth, pixelHeight} = options;
+
+        ///let baselineColor;
+        //if (typeof self.color === "string" && self.color.startsWith("rgb(")) {
+        //    baselineColor = IGVColor.addAlpha(self.color, 0.1);
+        //}
+
+        const yScale = (yValue) => {
+            return ((this.dataRange.max - yValue) / (this.dataRange.max - this.dataRange.min)) * pixelHeight
+        };
+
+        const getX = function (bpPosition) {
+            let x = Math.floor((bpPosition - bpStart) / bpPerPixel);
+            if (isNaN(x)) console.warn('isNaN(x). feature start ' + numberFormatter$1(bpPosition) +
+                ' bp start ' + numberFormatter$1(bpStart));
+            return x
+        };
+
+        const drawGuideLines = (options) => {
+            if (this.config.hasOwnProperty('guideLines')) {
+                for (let line of this.config.guideLines) {
+                    if (line.hasOwnProperty('color') && line.hasOwnProperty('y') && line.hasOwnProperty('dotted')) {
+                        let y = yScale(line.y);
+                        let props = {
+                            'strokeStyle': line['color'],
+                            'strokeWidth': 2
+                        };
+                        if (line['dotted']) IGVGraphics.dashedLine(options.context, 0, y, options.pixelWidth, y, 5, props);
+                        else IGVGraphics.strokeLine(options.context, 0, y, options.pixelWidth, y, props);
+                    }
+                }
+            }
+        };
+
+        if (features && features.length > 0) {
+
+            if (this.dataRange.min === undefined) this.dataRange.min = 0;
+
+            // Max can be less than min if config.min is set but max left to autoscale. If that's the case there is
+            // nothing to paint.
+            if (this.dataRange.max > this.dataRange.min) {
+                const highlightSamples = this.config.highlightSamples;
+                const onlyHandleClicksForHighlightedSamples = this.config.onlyHandleClicksForHighlightedSamples;
+                const clickToHighlight = this.config.clickToHighlight;
+
+                let previousEnd = -1;
+                let previousValues = {};
+
+                let highlightConnectorLines = [];
+                let highlightFeatureLines = [];
+
+                // clickDetectorCache allows fast retrieval of whether a mouse click hits a rendered line segment
+                // by storing lists of rendered line segments, keyed by their right x coordinate in canvas pixel space.
+                // this cache is regenerated on every draw.
+                this.clickDetectorCache = {};
+
+                for (let feature of features) {
+                    const x1 = getX(feature.start);
+                    const x2 = getX(feature.end);
+                    const previousX = previousEnd >= 0 ? getX(previousEnd) : x1;
+
+                    if (isNaN(x1) || isNaN(x2)) continue
+                    // if ((x1 - previousX < X_PIXEL_DIFF_THRESHOLD) && (x2 - x1 < X_PIXEL_DIFF_THRESHOLD)) continue;
+
+                    this.clickDetectorCache[x1] = [];
+                    this.clickDetectorCache[x2] = [];
+                    for (let i = 0; i < feature.values.length; i++) {
+                        const sampleName = this.sampleNames[i];
+                        const value = feature.values[i];
+                        const y = yScale(value);
+                        if (x1 - previousX >= X_PIXEL_DIFF_THRESHOLD) {
+                            const previousValue = previousValues[sampleName];
+                            const previousY = yScale(previousValue);
+                            const highlightColor = highlightSamples && highlightSamples[sampleName];
+
+
+                            if (highlightColor) {
+                                highlightConnectorLines.push([previousX, previousY, x1, y, highlightColor]);
+                            } else if (clickToHighlight && sampleName in this.config.samplesClickedToHighlight) {
+                                highlightConnectorLines.push([previousX, previousY, x1, y, this.config.samplesClickedToHighlight[sampleName]]);
+                            } else {
+                                IGVGraphics.strokeLine(context, previousX, previousY, x1, y, {strokeStyle: '#D9D9D9'});
+                            }
+                            if (!onlyHandleClicksForHighlightedSamples || sampleName in highlightSamples) {
+                                this.clickDetectorCache[x1].push([previousX, previousY, x1, y, sampleName, highlightColor || 'gray']);
+                            }
+                        }
+
+                        if (x2 - x1 >= X_PIXEL_DIFF_THRESHOLD) {
+                            const highlightColor = highlightSamples && highlightSamples[sampleName];
+                            if (highlightColor) {
+                                highlightFeatureLines.push([x1, y, x2, y, highlightColor]);
+                            } else if (clickToHighlight && sampleName in this.config.samplesClickedToHighlight) {
+                                highlightFeatureLines.push([x1, y, x2, y, this.config.samplesClickedToHighlight[sampleName]]);
+                            } else {
+                                IGVGraphics.strokeLine(context, x1, y, x2, y, {strokeStyle: 'gray'});
+                            }
+                            if (!onlyHandleClicksForHighlightedSamples || sampleName in highlightSamples) {
+                                this.clickDetectorCache[x2].push([x1, y, x2, y, sampleName, highlightColor || 'gray']);
+                            }
+                        }
+
+                        previousValues[sampleName] = value;
+
+                        //IGVGraphics.fillCircle(ctx, px, y, pointSize / 2, {"fillStyle": color, "strokeStyle": color});
+                        //IGVGraphics.fillRect(ctx, x, y, width, height, {fillStyle: color});
+                    }
+                    previousEnd = feature.end;
+                }
+
+                for (let f of highlightConnectorLines) {
+                    IGVGraphics.strokeLine(context, f[0], f[1], f[2], f[3], {strokeStyle: f[4], lineWidth: 1.3});
+                }
+                for (let f of highlightFeatureLines) {
+                    IGVGraphics.strokeLine(context, f[0], f[1], f[2], f[3], {strokeStyle: f[4], lineWidth: 2});
+                }
+
+                /*
+                // If the track includes negative values draw a baseline
+                if (this.dataRange.min < 0) {
+                    const basepx = (self.dataRange.max / (this.dataRange.max - this.dataRange.min)) * options.pixelHeight;
+                    IGVGraphics.strokeLine(context, 0, basepx, options.pixelWidth, basepx, {strokeStyle: baselineColor});
+                }
+                */
+            }
+        }
+
+        drawGuideLines(options);
+    }
+
+    doAutoscale(features) {
+
+        let min, max;
+        if (features.length > 0) {
+            min = Number.MAX_VALUE;
+            max = -Number.MAX_VALUE;
+
+            features.forEach(function (feature) {
+                min = Math.min(min, ...feature.values);
+                max = Math.max(max, ...feature.values);
+            });
+
+            min -= 0.01;
+            max += 0.01;
+        } else {
+            // No features -- default
+            min = 0;
+            max = 100;
+        }
+
+        return {min: min, max: max}
+    }
+
+    clickedFeatures(clickState) {
+        //console.warn('click', clickState.canvasX, clickState.canvasY, clickState)
+
+        const BOUNDING_BOX_PADDING = 10;
+        const MIN_DISTANCE_TO_SEGMENT = 5;
+
+        const clickX = clickState.canvasX;
+        const clickY = clickState.canvasY;
+
+        let key = null;
+        for (key of Object.keys(this.clickDetectorCache)) {
+            key = parseInt(key);
+            if (key >= clickX) {
+                break
+            }
+        }
+
+
+        if (key) {
+            let closestDistanceSoFar = Number.MAX_VALUE;
+            let closestResult = [];
+            const segments = this.clickDetectorCache[key];
+            for (let segment of segments) {
+                const x1 = segment[0];
+                const x2 = segment[2];
+                if (clickX < x1 || clickX > x2) return []
+
+                const y1 = segment[1];
+                const y2 = segment[3];
+
+                if ((clickY < Math.min(y1, y2) - BOUNDING_BOX_PADDING) || (clickY > Math.max(y1, y2) + BOUNDING_BOX_PADDING)) continue
+
+                const distance = distanceToLine(clickX, clickY, x1, y1, x2, y2);
+                if (distance < closestDistanceSoFar) {
+                    closestResult = [{'name': segment[4], 'color': segment[5]}];
+                    closestDistanceSoFar = distance;
+                    //console.warn('closest:', 'name', segment[4], 'color', segment[5], distance);
+                }
+            }
+
+            if (closestDistanceSoFar < MIN_DISTANCE_TO_SEGMENT) {
+                // clickToHighlight set, add sample to dict of clicked lines
+                if (this.config.clickToHighlight) {
+                    if (closestResult[0]['name'] in this.config.samplesClickedToHighlight) {
+                        // clicked sample already highlighted => remove if clicked again
+                        delete this.config.samplesClickedToHighlight[closestResult[0]['name']];
+                    } else if (this.config.clickToHighlight === 'any') {
+                        var colourList = [
+                            'red', 'darkblue', 'green', 'teal', 'olivedrab',
+                            'orange', 'maroon', 'purple', 'blue', 'gold',
+                        ];
+                        var colour = colourList[Math.floor(Math.random() * (colourList.length + 1))];
+                        this.config.samplesClickedToHighlight[closestResult[0]['name']] = colour;
+                    } else {
+                        this.config.samplesClickedToHighlight[closestResult[0]['name']] = this.config.clickToHighlight;
+                    }
+                    this.trackView.repaintViews();  // prompt redraw to change colour of clicked sample
+                }
+                return closestResult
+            }
+        }
+
+        return []
+    }
+
+    popupData(clickState, features) {
+
+        if(features === undefined) features = this.clickedFeatures(clickState);
+
+        const items = [];
+        features.forEach(function (f) {
+            for (let property of Object.keys(f)) {
+                if (isSimpleType(f[property])) {
+                    items.push({name: property, value: f[property]});
+                }
+            }
+        });
+
+        return items
+    }
+
+    get supportsWholeGenome() {
+        return false
+    }
+}
+
+
+function distanceToLine(x, y, ax, ay, bx, by) {
+    /*
+        Finds distance between point (x, y) and line defined by points (ax, ay) (bx, by)
+        based on http://mathworld.wolfram.com/Point-LineDistance2-Dimensional.html
+    */
+
+    const bx_minus_ax = bx - ax;
+    const by_minus_ay = by - ay;
+    const v = Math.abs(bx_minus_ax * (ay - y) - (ax - x) * by_minus_ay);
+    const r = Math.sqrt(bx_minus_ax * bx_minus_ax + by_minus_ay * by_minus_ay);
+
+    const distance = r > 0 ? v / r : 0;
+    //console.warn('Check if', x, y, 'is within', ax, ay, bx, by, '. Distance from line: ', distance);
+
+    return distance
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class RnaStructTrack extends TrackBase {
+
+    constructor(config, browser) {
+
+        super(config, browser);
+
+        // Set defaults
+        if (!config.height) {
+            this.height = 300;
+        }
+
+        this.arcOrientation = false;
+
+        this.theta = Math.PI / 2;
+
+        if ("bp" === config.format) {
+            this.featureSource = new RNAFeatureSource(config, browser.genome);
+        } else {
+            this.featureSource = new TextFeatureSource(config, browser.genome);
+        }
+    }
+
+    async getFeatures(chr, start, end) {
+        const visibilityWindow = this.visibilityWindow;
+        return this.featureSource.getFeatures({chr, start, end, visibilityWindow})
+    }
+
+    draw(options) {
+
+        const ctx = options.context;
+
+        const theta = Math.PI / 2;
+        const pixelWidth = options.pixelWidth;
+        const pixelHeight = options.pixelHeight;
+        options.viewportWidth;
+        const bpPerPixel = options.bpPerPixel;
+        const bpStart = options.bpStart;
+        const xScale = bpPerPixel;
+        const orienation = this.arcOrientation;
+
+        IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+
+        const featureList = options.features;
+
+        if (featureList) {
+
+            // Sort by score -- draw lowest scored features first
+            sortByScore(featureList, 1);
+
+            for (let feature of featureList) {
+
+                if (feature.startLeft) {
+
+                    let sl = Math.round((feature.startLeft - bpStart) / xScale);
+                    let sr = Math.round((feature.startRight - bpStart) / xScale);
+                    let el = Math.round((feature.endLeft - bpStart) / xScale);
+                    let er = Math.round((feature.endRight - bpStart) / xScale);
+
+                    ctx.fillStyle = feature.color;
+                    ctx.strokeStyle = feature.color;
+                    ctx.beginPath();
+
+                    // First arc
+                    let x1 = (sl + er) / 2;
+                    let r1 = (er - sl) / 2;
+                    let y1 = this.height;
+                    let sa = Math.PI + (Math.PI / 2 - theta);
+                    let ea = 2 * Math.PI - (Math.PI / 2 - theta);
+
+                    if (orienation) {
+                        y1 = 0;
+                        ctx.arc(x1, y1, r1, ea, sa);
+                        ctx.lineTo(er, y1);
+                    } else {
+                        ctx.arc(x1, y1, r1, sa, ea);
+                        ctx.lineTo(el, y1);
+                    }
+
+                    // Second arc
+                    const x2 = (sr + el) / 2;
+                    const r2 = (el - sr) / 2;
+                    const y2 = y1;                        // Only for theta == pi/2
+
+                    if (orienation) {
+                        ctx.arc(x2, y2, r2, sa, ea, true);
+                        ctx.lineTo(el, y2);
+                    } else {
+                        ctx.arc(x2, y2, r2, ea, sa, true);
+                        ctx.lineTo(sl, y2);
+                    }
+
+                    ctx.stroke();
+                    ctx.fill();
+
+                    feature.drawState = {x1: x1, y1: y1, r1: r1, x2: x2, y2: y2, r2: r2, sa: sa, ea: ea};
+                } else {
+                    let s = Math.round((feature.start - bpStart) / xScale);
+                    let e = Math.round((feature.end - bpStart) / xScale);
+
+                    ctx.strokeStyle = feature.color;
+
+                    ctx.beginPath();
+
+                    // First arc
+                    let x = (s + e) / 2;
+                    let r = (e - s) / 2;
+                    let y = this.height;
+                    let sa = Math.PI + (Math.PI / 2 - theta);
+                    let ea = 2 * Math.PI - (Math.PI / 2 - theta);
+
+                    if (orienation) {
+                        y = 0;
+                        ctx.arc(x, y, r, ea, sa);
+                    } else {
+                        ctx.arc(x, y, r, sa, ea);
+                    }
+
+                    ctx.stroke();
+
+                    feature.drawState = {x1: x, y1: y, r1: r, sa: sa, ea: ea};
+
+                }
+
+            }
+        }
+    }
+
+    clickedFeatures(clickState) {
+
+        const features = super.clickedFeatures(clickState);
+
+        const clicked = [];
+
+        // Sort by score in descending order   (opposite order than drawn)
+        sortByScore(features, -1);
+
+        for (let f of features) {
+            const ds = f.drawState;
+
+            // Distance from arc radius, or outer arc for type ".bp"
+            const dx1 = (clickState.canvasX - ds.x1);
+            const dy1 = (clickState.canvasY - ds.y1);
+            const d1 = Math.sqrt(dx1 * dx1 + dy1 * dy1);
+            const outerLim = ds.r1 + 3;
+
+
+            let d2;
+            let innerLim;
+            if (ds.x2 === undefined) {
+                d2 = d1;
+                innerLim = ds.r1 - 3;
+
+            } else {
+                const dx2 = (clickState.canvasX - ds.x2);
+                const dy2 = (clickState.canvasY - ds.y2);
+                d2 = Math.sqrt(dx2 * dx2 + dy2 * dy2);
+                innerLim = ds.r2 - 3;
+            }
+
+
+            // Between outer and inner arcs, with some tolerance
+            if (d1 < outerLim && d2 > innerLim) {
+                clicked.push(f);
+                break
+            }
+        }
+        return clicked
+    }
+
+    popupData(clickState, features) {
+
+        if(features === undefined) features = this.clickedFeatures(clickState);
+
+        if (features && features.length > 0) {
+
+            return this.extractPopupData(features[0], this.getGenomeId())
+
+        }
+    }
+
+    menuItemList() {
+
+        var self = this;
+
+        return [
+            {
+                name: "Toggle arc direction",
+                click: function () {
+                    self.arcOrientation = !self.arcOrientation;
+                    self.trackView.repaintViews();
+                }
+            }
+        ]
+
+    };
+
+
+}
+
+function sortByScore(featureList, direction) {
+
+    featureList.sort(function (a, b) {
+        const s1 = a.score === undefined ? -Number.MAX_VALUE : a.score;
+        const s2 = b.score === undefined ? -Number.MAX_VALUE : b.score;
+        const d = direction === undefined ? 1 : direction;
+
+        return d * (s1 - s2)
+    });
+}
+
+
+class RNAFeatureSource {
+
+    constructor(config, genome) {
+        this.config = config;
+        this.genome = genome;
+    }
+
+    async getFeatures({chr, start, end, bpPerPixel, visibilityWindow}) {
+
+
+        const genome = this.genome;
+
+        if (!this.featureCache) {
+
+            const options = buildOptions(this.config);
+
+            const data = await igvxhr.loadString(this.config.url, options);
+
+            this.featureCache = new FeatureCache$1(parseBP(data), genome);
+
+            return this.featureCache.queryFeatures(chr, start, end)
+
+        } else {
+            return this.featureCache.queryFeatures(chr, start, end)
+        }
+
+        function parseBP(data) {
+
+            if (!data) return null
+
+            const dataWrapper = getDataWrapper(data);
+
+            let header = true;
+            let line;
+            const colors = [];
+            const descriptors = [];
+            const features = [];
+
+            while ((line = dataWrapper.nextLine()) !== undefined) {
+
+                const tokens = line.split('\t');
+
+                if (header && line.startsWith("color:")) {
+                    const color = "rgb(" + tokens[1] + "," + tokens[2] + "," + tokens[3] + ")";
+                    colors.push(color);
+                    if (tokens.length > 4) {
+                        descriptors.push(tokens[4]);
+                    }
+                    // TODO - use label
+                } else {
+                    header = false;
+
+                    const chr = tokens[0];
+                    const startLeftNuc = Number.parseInt(tokens[1]) - 1;
+                    const startRightNuc = Number.parseInt(tokens[2]) - 1;
+                    const endLeftNuc = Number.parseInt(tokens[3]);
+                    const endRightNuc = Number.parseInt(tokens[4]);
+                    var colorIdx = Number.parseInt(tokens[5]);
+                    const color = colors[colorIdx];
+
+
+                    let feature;
+                    if (startLeftNuc <= endRightNuc) {
+                        feature = {
+                            chr: chr,
+                            startLeft: Math.min(startLeftNuc, startRightNuc),
+                            startRight: Math.max(startLeftNuc, startRightNuc),
+                            endLeft: Math.min(endLeftNuc, endRightNuc),
+                            endRight: Math.max(endLeftNuc, endRightNuc),
+                            color: color,
+                            score: colorIdx
+                        };
+                    } else {
+                        feature = {
+                            chr: chr,
+                            startLeft: Math.min(endLeftNuc, endRightNuc),
+                            startRight: Math.max(endLeftNuc, endRightNuc),
+                            endLeft: Math.min(startLeftNuc, startRightNuc),
+                            endRight: Math.max(startLeftNuc, startRightNuc),
+                            color: color,
+                            score: colorIdx
+                        };
+                    }
+
+                    feature.start = feature.startLeft;
+                    feature.end = feature.endRight;
+
+                    if (descriptors.length > colorIdx) {
+                        feature.description = descriptors[colorIdx];
+                    }
+
+                    features.push(feature);
+                }
+            }
+
+            return features
+        }
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+/**
+ * Class represents an ideogram of a chromsome cytobands.  It is used for the header of a track panel.
+ *
+ */
+class IdeogramTrack {
+    constructor(browser) {
+        this.browser = browser;
+        this.type = 'ideogram';
+        this.height = 16;
+        this.order = Number.MIN_SAFE_INTEGER;
+        this.disableButtons = true;
+        this.ignoreTrackMenu = true;
+    }
+
+    async getFeatures(chr, start, end) {
+        return []
+    }
+
+    computePixelHeight(ignore) {
+        return this.height
+    }
+
+    draw({context, referenceFrame, pixelWidth, pixelHeight}) {
+
+        const chr = referenceFrame.chr;
+        const chromosome = referenceFrame.genome.getChromosome(chr);
+
+        if (undefined === chromosome || pixelWidth <= 0 || pixelHeight <= 0 || 'all' === chr.toLowerCase()) {
+            return
+        }
+
+        const stainColors = [];
+
+        drawIdeogram({
+            ctx: context,
+            chr,
+            referenceFrame,
+            genome: referenceFrame.genome,
+            width: pixelWidth,
+            height: pixelHeight,
+            stainColors
+        });
+
+        const widthBP = Math.round(referenceFrame.bpPerPixel * pixelWidth);
+        const xBP = referenceFrame.start;
+
+        // Total chromosome length can be > chromosome.bpLength for partial fastas.
+        let chrLength = chromosome.bpLength;
+        const cytobands = referenceFrame.genome.getCytobands(chr);
+        if (cytobands && cytobands.length > 0 && cytobands[cytobands.length - 1].end) {
+            chrLength = Math.max(chrLength, cytobands[cytobands.length - 1].end);
+            chromosome.bpLength = chrLength;   // Correct bp length, bit of a hack
+        }
+
+        if (widthBP < chrLength) {
+
+            const percentWidth = widthBP / chrLength;
+            const percentX = xBP / chrLength;
+
+            let x = Math.floor(percentX * pixelWidth);
+            let ww = Math.floor(percentWidth * pixelWidth);
+
+            x = Math.max(0, x);
+            x = Math.min(pixelWidth - ww, x);
+
+            // Push current context
+            context.save();
+
+            // Draw red box
+            context.strokeStyle = "red";
+            context.lineWidth = (ww < 2) ? 1 : 2;
+
+            const xx = x + (context.lineWidth) / 2;
+            ww = (ww < 2) ? 1 : ww - context.lineWidth;
+
+            const yy = context.lineWidth / 2;
+            const hh = pixelHeight - context.lineWidth;
+
+            context.strokeRect(xx, yy, ww, hh);
+
+            // Pop current context
+            context.restore();
+        }
+
+    }
+
+    dispose() {
+        this.trackView = undefined;
+    }
+}
+
+function drawIdeogram({ctx, chr, referenceFrame, genome, width, height, stainColors}) {
+
+    const shim = 1;
+    const shim2 = 0.5 * shim;
+    const ideogramTop = 0;
+
+    if (undefined === genome) {
+        return
+    }
+
+    IGVGraphics.fillRect(ctx, 0, 0, width, height, {fillStyle: IGVColor.greyScale(255)});
+
+    const cytobands = genome.getCytobands(chr);
+    if (cytobands) {
+
+        const center = (ideogramTop + height / 2);
+
+        const xC = [];
+        const yC = [];
+
+        if (0 === cytobands.length) {
+            return
+        }
+
+        // Get chrLength from the cytobands -- chromsome.bpLength might not work for igv-reports fasta files, which
+        // contain only a portion of the chromosome sequence
+        // *DOESNT WORK* const chrLength = referenceFrame.genome.getChromosome(chr).bpLength;
+
+        const chrLength = cytobands[cytobands.length - 1].end;
+        const scale = width / chrLength;
+
+        // round rect clipping path
+        ctx.beginPath();
+        IGVGraphics.roundRect(ctx, shim2, shim2 + ideogramTop, width - 2 * shim2, height - 2 * shim2, (height - 2 * shim2) / 2, 0, 1);
+        ctx.clip();
+
+        for (let i = 0; i < cytobands.length; i++) {
+
+            const cytoband = cytobands[i];
+            const start = scale * cytoband.start;
+            const end = scale * cytoband.end;
+
+            if (cytoband.type === 'c') {
+
+                if (cytoband.name.charAt(0) === 'p') {
+                    xC[0] = start;
+                    yC[0] = height + ideogramTop;
+                    xC[1] = start;
+                    yC[1] = ideogramTop;
+                    xC[2] = end;
+                    yC[2] = center;
+                } else {
+                    xC[0] = end;
+                    yC[0] = height + ideogramTop;
+                    xC[1] = end;
+                    yC[1] = ideogramTop;
+                    xC[2] = start;
+                    yC[2] = center;
+                }
+
+                ctx.fillStyle = "rgb(150, 0, 0)";
+                ctx.strokeStyle = "rgb(150, 0, 0)";
+                IGVGraphics.polygon(ctx, xC, yC, 1, 0);
+            } else {
+
+                ctx.fillStyle = getCytobandColor(stainColors, cytoband);
+                IGVGraphics.fillRect(ctx, start, shim + ideogramTop, (end - start), height - 2 * shim);
+            }
+        }
+    }
+
+    // round rect border
+    ctx.strokeStyle = IGVColor.greyScale(41);
+    IGVGraphics.roundRect(ctx, shim2, shim2 + ideogramTop, width - 2 * shim2, height - 2 * shim2, (height - 2 * shim2) / 2, 0, 1);
+}
+
+function getCytobandColor(colors, data) {
+
+    if (data.type === 'c') { // centermere: "acen"
+        return "rgb(150, 10, 10)"
+    } else {
+        var stain = data.stain; // + 4;
+
+        var shade = 230;
+        if (data.type === 'p') {
+            shade = Math.floor(230 - stain / 100.0 * 230);
+        }
+        var c = colors[shade];
+        if (!c) {
+            c = "rgb(" + shade + "," + shade + "," + shade + ")";
+            colors[shade] = c;
+        }
+        return c
+
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+let JUNCTION_MOTIF_PALETTE = new PaletteColorTable("Dark2");
+
+// Lock in color-to-motif mapping so it's independent of data loading order. This list may not include all possible
+// motif values as this varies depending on the RNA-seq pipeline. The current list is based on STAR v2.4 docs.
+const someMotifValues = ['GT/AG', 'CT/AC', 'GC/AG', 'CT/GC', 'AT/AC', 'GT/AT', 'non-canonical'];
+someMotifValues.forEach(motif => {
+    JUNCTION_MOTIF_PALETTE.getColor(motif);
+});
+
+// rendering context with values that only need to be computed once per render, rather than for each splice junction
+const junctionRenderingContext = {};
+
+class SpliceJunctionTrack extends TrackBase {
+
+    constructor(config, browser) {
+        super(config, browser);
+    }
+
+
+    init(config) {
+
+        super.init(config);
+
+        this.type = config.type || 'junctions';
+
+        if (config._featureSource) {
+            this.featureSource = config._featureSource;
+            delete config._featureSource;
+        } else {
+            this.featureSource = config.featureSource ?
+                config.featureSource :
+                FeatureSource(config, this.browser.genome);
+        }
+
+        this.margin = config.margin === undefined ? 10 : config.margin;
+
+        if (!this.height) {
+            this.height = 100;
+        }
+
+        //set defaults
+        if (config.colorByNumReadsThreshold === undefined) {
+            config.colorByNumReadsThreshold = 5;
+        }
+    }
+
+    async postInit() {
+
+        if (typeof this.featureSource.getHeader === "function") {
+            this.header = await this.featureSource.getHeader();
+            if (this.disposed) return   // This track was removed during async load
+        }
+
+        // Set properties from track line
+        if (this.header) {
+            this.setTrackProperties(this.header);
+        }
+
+        if (this.visibilityWindow === undefined && typeof this.featureSource.defaultVisibilityWindow === 'function') {
+            this.visibilityWindow = await this.featureSource.defaultVisibilityWindow();
+        }
+
+        return this
+
+    }
+
+    get supportsWholeGenome() {
+        return false
+    }
+
+    async getFeatures(chr, start, end, bpPerPixel) {
+        const visibilityWindow = this.visibilityWindow;
+        return this.featureSource.getFeatures({chr, start, end, bpPerPixel, visibilityWindow})
+    };
+
+
+    /**
+     * The required height in pixels required for the track content.   This is not the visible track height, which
+     * can be smaller (with a scrollbar) or larger.
+     *
+     * @param features
+     * @returns {*}
+     */
+    computePixelHeight(features) {
+        return this.height
+    };
+
+    draw(options) {
+
+        const featureList = options.features;
+        const ctx = options.context;
+        const bpPerPixel = options.bpPerPixel;
+        const bpStart = options.bpStart;
+        const pixelWidth = options.pixelWidth;
+        const pixelHeight = options.pixelHeight;
+        const bpEnd = bpStart + pixelWidth * bpPerPixel + 1;
+
+
+        if (!this.config.isMergedTrack) {
+            IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+        }
+
+        if (featureList) {
+
+
+            junctionRenderingContext.referenceFrame = options.viewport.referenceFrame;
+            junctionRenderingContext.referenceFrameStart = junctionRenderingContext.referenceFrame.start;
+            junctionRenderingContext.referenceFrameEnd = junctionRenderingContext.referenceFrameStart +
+                junctionRenderingContext.referenceFrame.toBP(options.viewport.getWidth());
+
+            // For a given viewport, records where features that are < 2px in width have been rendered already.
+            // This prevents wasteful rendering of multiple such features onto the same pixels.
+            junctionRenderingContext.featureZoomOutTracker = {};
+
+            for (let feature of featureList) {
+                if (feature.end < bpStart) continue
+                if (feature.start > bpEnd) break
+                this.renderJunction(feature, bpStart, bpPerPixel, pixelHeight, ctx);
+            }
+
+        } else {
+            console.log("No feature list");
+        }
+
+    };
+
+    /**
+     *
+     * @param feature
+     * @param bpStart  genomic location of the left edge of the current canvas
+     * @param xScale  scale in base-pairs per pixel
+     * @param pixelHeight  pixel height of the current canvas
+     * @param ctx  the canvas 2d context
+     */
+    renderJunction(feature, bpStart, xScale, pixelHeight, ctx) {
+        // cache whether this junction is rendered or filtered out. Use later to exclude non-rendered junctions from click detection.
+        feature.isVisible = false;
+
+        const junctionLeftPx = Math.round((feature.start - bpStart) / xScale);
+        const junctionRightPx = Math.round((feature.end - bpStart) / xScale);
+        const junctionMiddlePx = (junctionLeftPx + junctionRightPx) / 2;
+        if (junctionRightPx - junctionLeftPx <= 3) {
+            if (junctionMiddlePx in junctionRenderingContext.featureZoomOutTracker) {
+                return
+            }
+            junctionRenderingContext.featureZoomOutTracker[junctionMiddlePx] = true;
+        }
+
+        // TODO: cache filter and pixel calculations by doing them earlier when features are initially parsed?
+        if (this.config.hideAnnotatedJunctions && feature.attributes.annotated_junction === "true") {
+            return
+        }
+        if (this.config.hideUnannotatedJunctions && feature.attributes.annotated_junction === "false") {
+            return
+        }
+        if (this.config.hideMotifs && this.config.hideMotifs.includes(feature.attributes.motif)) {
+            return
+        }
+        if (this.config.hideStrand === feature.strand) {
+            return
+        }
+
+        // check if splice junction is inside viewport
+        if (this.config.minJunctionEndsVisible) {
+            let numJunctionEndsVisible = 0;
+            if (feature.start >= junctionRenderingContext.referenceFrameStart && feature.start <= junctionRenderingContext.referenceFrameEnd) {
+                numJunctionEndsVisible += 1;
+            }
+            if (feature.end >= junctionRenderingContext.referenceFrameStart && feature.end <= junctionRenderingContext.referenceFrameEnd) {
+                numJunctionEndsVisible += 1;
+            }
+            if (numJunctionEndsVisible < this.config.minJunctionEndsVisible) {
+                return
+            }
+        }
+
+        let uniquelyMappedReadCount;
+        let multiMappedReadCount;
+        let totalReadCount;
+        if (feature.attributes.uniquely_mapped) {
+            uniquelyMappedReadCount = parseInt(feature.attributes.uniquely_mapped);
+            if (uniquelyMappedReadCount < this.config.minUniquelyMappedReads) {
+                return
+            }
+            multiMappedReadCount = parseInt(feature.attributes.multi_mapped);
+            totalReadCount = uniquelyMappedReadCount + multiMappedReadCount;
+            if (totalReadCount < this.config.minTotalReads) {
+                return
+            }
+            if (totalReadCount > 0 && multiMappedReadCount / totalReadCount > this.config.maxFractionMultiMappedReads) {
+                return
+            }
+            if (feature.attributes.maximum_spliced_alignment_overhang && parseInt(feature.attributes.maximum_spliced_alignment_overhang) < this.config.minSplicedAlignmentOverhang) {
+                return
+            }
+        }
+
+        let numSamplesWithThisJunction;
+        if (feature.attributes.num_samples_with_this_junction) {
+            numSamplesWithThisJunction = parseInt(feature.attributes.num_samples_with_this_junction);
+            if (this.config.minSamplesWithThisJunction && numSamplesWithThisJunction < this.config.minSamplesWithThisJunction) {
+                return
+            }
+            if (this.config.maxSamplesWithThisJunction && numSamplesWithThisJunction > this.config.maxSamplesWithThisJunction) {
+                return
+            }
+            if (feature.attributes.num_samples_total) {
+                feature.attributes.percent_samples_with_this_junction = 100 * numSamplesWithThisJunction / Number(feature.attributes.num_samples_total);
+                if (this.config.minPercentSamplesWithThisJunction) {
+                    if (feature.attributes.percent_samples_with_this_junction < this.config.minPercentSamplesWithThisJunction ||
+                        feature.attributes.percent_samples_with_this_junction > this.config.maxPercentSamplesWithThisJunction) {
+                        return
+                    }
+                }
+            }
+        }
+
+        const py = this.margin;
+        const rowHeight = this.height;
+
+        const cy = py + 0.5 * rowHeight;
+        let topY = py;
+        const bottomY = py + rowHeight;
+        const bezierBottomY = bottomY - 10;
+
+        // draw the junction arc
+        const bezierControlLeftPx = (junctionLeftPx + junctionMiddlePx) / 2;
+        const bezierControlRightPx = (junctionMiddlePx + junctionRightPx) / 2;
+
+        let lineWidth = 1;
+        if (feature.attributes.line_width) {
+            lineWidth = Number(feature.attributes.line_width);
+        } else {
+            if (this.config.thicknessBasedOn === undefined || this.config.thicknessBasedOn === 'numUniqueReads') {
+                lineWidth = uniquelyMappedReadCount;
+            } else if (this.config.thicknessBasedOn === 'numReads') {
+                lineWidth = totalReadCount;
+            } else if (this.config.thicknessBasedOn === 'numSamplesWithThisJunction') {
+                if (numSamplesWithThisJunction !== undefined) {
+                    lineWidth = numSamplesWithThisJunction;
+                }
+            }
+            lineWidth = 1 + Math.log(lineWidth + 1) / Math.log(12);
+        }
+
+        let bounceHeight;
+        if (this.config.bounceHeightBasedOn === undefined || this.config.bounceHeightBasedOn === 'random') {
+            // randomly but deterministically stagger topY coordinates to reduce overlap
+            bounceHeight = (feature.start + feature.end) % 7;
+        } else if (this.config.bounceHeightBasedOn === 'distance') {
+            bounceHeight = 6 * (feature.end - feature.start) / (junctionRenderingContext.referenceFrameEnd - junctionRenderingContext.referenceFrameStart);
+        } else if (this.config.bounceHeightBasedOn === 'thickness') {
+            bounceHeight = 2 * lineWidth;
+        }
+        topY += rowHeight * Math.max(7 - bounceHeight, 0) / 10;
+
+        let color;
+        if (feature.attributes.color) {
+            color = feature.attributes.color;  // Explicit setting
+        } else if (this.config.colorBy === undefined || this.config.colorBy === 'numUniqueReads') {
+            color = uniquelyMappedReadCount > this.config.colorByNumReadsThreshold ? 'blue' : '#AAAAAA';  // color gradient?
+        } else if (this.config.colorBy === 'numReads') {
+            color = totalReadCount > this.config.colorByNumReadsThreshold ? 'blue' : '#AAAAAA';
+        } else if (this.config.colorBy === 'isAnnotatedJunction') {
+            color = feature.attributes.annotated_junction === "true" ? '#b0b0ec' : 'orange';
+        } else if (this.config.colorBy === 'strand') {
+            color = feature.strand === "+" ? '#b0b0ec' : '#ecb0b0';
+        } else if (this.config.colorBy === 'motif') {
+            color = JUNCTION_MOTIF_PALETTE.getColor(feature.attributes.motif);
+        } else {
+            color = '#AAAAAA';
+        }
+
+        let label = "";
+        if (feature.attributes.label) {
+            label = feature.attributes.label.replace(/_/g, " ");
+        } else if (this.config.labelWith === undefined || this.config.labelWith === 'uniqueReadCount') {
+            //default label
+            label = uniquelyMappedReadCount;
+        } else if (this.config.labelWith === 'totalReadCount') {
+            label = totalReadCount;
+        } else if (this.config.labelWith === 'numSamplesWithThisJunction') {
+            if (numSamplesWithThisJunction !== undefined) {
+                label = numSamplesWithThisJunction;
+            }
+        } else if (this.config.labelWith === 'percentSamplesWithThisJunction') {
+            if (feature.attributes.percent_samples_with_this_junction !== undefined) {
+                label = feature.attributes.percent_samples_with_this_junction.toFixed(0) + '%';
+            }
+        } else if (this.config.labelWith === 'motif') {
+            if (feature.attributes.motif !== undefined) {
+                label += feature.attributes.motif;
+            }
+        }
+
+        if (this.config.labelWithInParen === 'uniqueReadCount') {
+            label += ' (' + uniquelyMappedReadCount + ')';
+        } else if (this.config.labelWithInParen === 'totalReadCount') {
+            label += ' (' + totalReadCount + ')';
+        } else if (this.config.labelWithInParen === 'multiMappedReadCount') {
+            if (multiMappedReadCount > 0) {
+                label += ' (+' + multiMappedReadCount + ')';
+            }
+        } else if (this.config.labelWithInParen === 'numSamplesWithThisJunction') {
+            if (numSamplesWithThisJunction !== undefined) {
+                label += ' (' + numSamplesWithThisJunction + ')';
+            }
+        } else if (this.config.labelWithInParen === 'percentSamplesWithThisJunction') {
+            if (feature.attributes.percent_samples_with_this_junction !== undefined) {
+                label += ' (' + feature.attributes.percent_samples_with_this_junction.toFixed(0) + '%)';
+            }
+        } else if (this.config.labelWithInParen === 'motif') {
+            if (feature.attributes.motif !== undefined) {
+                label += ` ${feature.attributes.motif}`;
+            }
+        }
+
+        // data source: STAR splice junctions (eg. SJ.out.tab file converted to bed).
+        // .bed "name" field used to store unique + multi-mapped read counts, so:
+        // feature.score:  unique spanning read counts
+        // feature.name:   unique + multi-mapped spanning read counts
+        //example feature:  { chr: "chr17", start: 39662344, end: 39662803, name: "59", row: 0, score: 38, strand: "+"}
+        feature.isVisible = true;
+        ctx.beginPath();
+        ctx.moveTo(junctionLeftPx, bezierBottomY);
+        ctx.bezierCurveTo(bezierControlLeftPx, topY, bezierControlRightPx, topY, junctionRightPx, bezierBottomY);
+
+        ctx.lineWidth = lineWidth;
+        ctx.strokeStyle = color;
+        ctx.stroke();
+
+        const drawArrowhead = (ctx, x, y, size) => {
+            //TODO draw better arrow heads: https://stackoverflow.com/questions/21052972/curved-thick-arrows-on-canvas
+            ctx.beginPath();
+            ctx.moveTo(x, y);
+            ctx.lineTo(x - size / 2, y - size);
+            ctx.lineTo(x + size / 2, y - size);
+            ctx.lineTo(x, y);
+            ctx.closePath();
+            ctx.fill();
+        };
+
+        if (feature.attributes.left_shape || feature.attributes.right_shape) {
+            ctx.fillStyle = color;
+            const arrowSize = ctx.lineWidth > 2 ? 10 : 7;
+            if (feature.attributes.left_shape) {
+                drawArrowhead(ctx, junctionLeftPx, bezierBottomY, arrowSize);
+            }
+            if (feature.attributes.right_shape) {
+                drawArrowhead(ctx, junctionRightPx, bezierBottomY, arrowSize);
+            }
+        }
+
+        ctx.fillText(label, junctionMiddlePx - ctx.measureText(label).width / 2, (7 * topY + cy) / 8);
+    }
+
+    clickedFeatures(clickState) {
+
+        const allFeatures = super.clickedFeatures(clickState);
+
+        return allFeatures.filter(function (feature) {
+            return (feature.isVisible && feature.attributes)
+        })
+    }
+
+    /**
+     * Return "popup data" for feature @ genomic location.  Data is an array of key-value pairs
+     */
+    popupData(clickState, features) {
+
+        if (features === undefined) features = this.clickedFeatures(clickState);
+        const genomicLocation = clickState.genomicLocation;
+
+        const data = [];
+        for (let feature of features) {
+
+            const featureData = (typeof feature.popupData === "function") ?
+                feature.popupData(genomicLocation) :
+                this.extractPopupData(feature._f || feature, this.getGenomeId());
+
+            if (featureData) {
+                if (data.length > 0) {
+                    data.push("<hr/><hr/>");
+                }
+
+                Array.prototype.push.apply(data, featureData);
+            }
+        }
+
+        return data
+    }
+
+    /**
+     * Called when the track is removed.  Do any needed cleanup here
+     */
+    dispose() {
+        this.trackView = undefined;
+    }
+}
+
+class RemoteFile {
+
+    constructor(args) {
+        this.config = args;
+        this.url = mapUrl(args.path || args.url);
+    }
+
+
+    async read(position, length) {
+
+        //console.log(`${position} - ${position + length} (${length})`)
+
+        const headers = this.config.headers || {};
+
+        if (position !== undefined && length) {
+            const rangeString = "bytes=" + position + "-" + (position + length - 1);
+            headers['Range'] = rangeString;
+        }
+
+        let url = this.url.slice();    // slice => copy
+        if (this.config.oauthToken) {
+            const token = resolveToken(this.config.oauthToken);
+            headers['Authorization'] = `Bearer ${token}`;
+        }
+
+        if (this.config.apiKey) {
+            url = addParameter(url, "key", this.config.apiKey);
+        }
+
+        const response = await fetch(url, {
+            method: 'GET',
+            headers: headers,
+            redirect: 'follow',
+            mode: 'cors',
+        });
+
+        const status = response.status;
+
+        if (status >= 400) {
+            const err = Error(response.statusText);
+            err.code = status;
+            throw err
+        } else {
+            return response.arrayBuffer()
+        }
+
+        /**
+         * token can be a string, a function that returns a string, or a function that returns a Promise for a string
+         * @param token
+         * @returns {Promise<*>}
+         */
+        async function resolveToken(token) {
+            if (typeof token === 'function') {
+                return await Promise.resolve(token())    // Normalize the result to a promise, since we don't know what the function returns
+            } else {
+                return token
+            }
+        }
+
+    }
+}
+
+
+function mapUrl(url) {
+
+    if (url.includes("//www.dropbox.com")) {
+        return url.replace("//www.dropbox.com", "//dl.dropboxusercontent.com")
+    } else if (url.startsWith("ftp://ftp.ncbi.nlm.nih.gov")) {
+        return url.replace("ftp://", "https://")
+    } else {
+        return url
+    }
+}
+
+
+function addParameter(url, name, value) {
+    const paramSeparator = url.includes("?") ? "&" : "?";
+    return url + paramSeparator + name + "=" + value
+}
+
+class BufferedFile {
+
+    constructor(args) {
+        this.file = args.file;
+        this.fetchSize = args.fetchSize || 16000;
+        this.maxSize = args.maxSize || 1000000;
+        this.buffers = [];
+    }
+
+    async read(position, length) {
+
+
+        let overlappingBuffers = this.buffers.filter( b => b.overlaps(position, position + length));
+
+        // See if any buffers completely contain request, if so we're done
+        for(let buffer of overlappingBuffers) {
+            if(buffer.contains(position, position + length)) {
+              return buffer.slice(position, position + length)
+            }
+        }
+
+
+        if(overlappingBuffers.length === 0) {
+
+            // No overlap with any existing buffer
+            let size = Math.max(length, this.fetchSize);
+
+            // Find index of first buffer to the right, if any, to potentially limit size
+            this.buffers.sort((a, b) => a.start - b.start);
+            const idx = binarySearch(this.buffers, (b) => b.start > position, 0);
+            if(idx < this.buffers.length) {
+                size = Math.min(size, this.buffers[idx].start - position);
+            }
+
+            const bufferStart = position;
+            const bufferData = await this.file.read(bufferStart, size);
+            const buffer = new Buffer$1(bufferStart, bufferData);
+            this.addBuffer(buffer);
+
+            return buffer.slice(position, position + length)
+        } else {
+
+            // console.log("Cache hit")
+            // Some overlap.   Fill gaps
+            overlappingBuffers.sort((a, b) => a.start - b.start);
+            const allBuffers = [];
+            let currentEnd = position;
+            for (let ob of overlappingBuffers) {
+                if (currentEnd < ob.start) {
+                    const bufferStart = currentEnd;
+                    const bufferSize = ob.start - currentEnd;
+                    const bufferData = await this.file.read(bufferStart, bufferSize);
+                    const buffer = new Buffer$1(bufferStart, bufferData);
+                    allBuffers.push(buffer);
+                }
+                allBuffers.push(ob);
+                currentEnd = ob.end;
+            }
+
+            // Check end
+            const requestedEnd = position + length;
+            if (requestedEnd > currentEnd) {
+                const bufferStart = currentEnd;
+                const bufferSize = requestedEnd - bufferStart;
+                const bufferData = await this.file.read(bufferStart, bufferSize);
+                const buffer = new Buffer$1(bufferStart, bufferData);
+                allBuffers.push(buffer);
+            }
+
+            const newStart = allBuffers[0].start;
+            const newArrayBuffer = concatArrayBuffers(allBuffers.map(b => b.buffer));
+            const newBuffer = new Buffer$1(newStart, newArrayBuffer);
+
+            // Replace the overlapping buffers with the new composite one
+            const tmp = new Set(overlappingBuffers);
+            this.buffers = this.buffers.filter(b => !tmp.has(b));
+            this.addBuffer(newBuffer);
+
+            return newBuffer.slice(position, position + length)
+        }
+
+    }
+
+    addBuffer(buffer) {
+
+        const size = this.buffers.reduce((a,b) => a + b.size, 0) + buffer.size;
+        if(size > this.maxSize) {
+            // console.log(`max buffer size exceeded`)
+            const overage = size - this.maxSize;
+            this.buffers.sort((a,b) => a.creationTime - b.creationTime);
+            let sum = 0;
+            let i;
+            for(i=0; i<this.buffers.length; i++) {
+                sum += this.buffers[i].size;
+                if(sum > overage) {
+                    break
+                }
+            }
+            // console.log('removing buffers')
+            // for(let j=0; j<i; j++) console.log(`  ${this.buffers[j].toString()}`)
+            this.buffers = (i < this.buffers.length - 1)  ? this.buffers.slice(i)  : [];
+        }
+
+        if(buffer.size <= this.maxSize) {
+            this.buffers.push(buffer);
+        }
+    }
+
+
+
+}
+
+class Buffer$1 {
+
+    constructor(bufferStart, buffer) {
+        this.creationTime = Date.now();
+        this.start = bufferStart;
+        this.buffer = buffer;
+    }
+
+    slice(start, end) {
+        if(start < this.start || end - start > this.buffer.byteLength) {
+            throw Error("buffer bounds error")
+        }
+        return this.buffer.slice(start - this.start, end - this.start)
+    }
+
+    get end() {
+        return this.start + this.buffer.byteLength
+    }
+
+    get size() {
+        return this.buffer.byteLength
+    }
+
+    contains(start, end) {
+        return start >= this.start && end <= this.end
+    }
+
+    overlaps(start, end) {
+        return (start > this.start && start < this.end) || (end > this.start && end < this.end)
+    }
+
+    toString() {
+        return `Buffer ${this.creationTime}   ${this.start} - ${this.end}`
+    }
+
+}
+
+/**
+ * concatenates 2 array buffers.
+ * Credit: https://gist.github.com/72lions/4528834
+ *
+ * @private
+ * @param {ArrayBuffers} buffer1 The first buffer.
+ * @param {ArrayBuffers} buffer2 The second buffer.
+ * @return {ArrayBuffers} The new ArrayBuffer created out of the two.
+ */
+function concatArrayBuffers(buffers) {
+    const size = buffers.reduce((a,b) => a + b.byteLength, 0);
+    const tmp = new Uint8Array(size);
+    let offset = 0;
+    for(let b of buffers) {
+        tmp.set(new Uint8Array(b), offset);
+        offset += b.byteLength;
+    }
+    return tmp.buffer
+}
+
+/**
+ * Return 0 <= i <= array.length such that !pred(array[i - 1]) && pred(array[i]).
+ *
+ * returns an index 0 ≤ i ≤ array.length such that the given predicate is false for array[i - 1] and true for array[i]* *
+ */
+function binarySearch(array, pred, min) {
+    let lo = min - 1, hi = array.length;
+    while (1 + lo < hi) {
+        const mi = lo + ((hi - lo) >> 1);
+        if (pred(array[mi])) {
+            hi = mi;
+        } else {
+            lo = mi;
+        }
+    }
+    return hi
+}
+
+class BlobFile {
+
+    constructor(blob) {
+        this.file = blob;
+    }
+
+    async read(position, length) {
+
+        if(length === 0) {
+            return new ArrayBuffer()
+        }
+
+        const blob = (position != undefined && length) ?
+            this.file.slice(position, position + length) :
+            this.file;
+
+        return blob.arrayBuffer()
+    }
+}
+
+// esm/core.js
+async function _unpack_struct_from_async(structure, async_buf, offset = 0) {
+  var output = /* @__PURE__ */ new Map();
+  for (let [key, fmt] of structure.entries()) {
+    let value = await struct.unpack_from_async("<" + fmt, async_buf, offset);
+    offset += struct.calcsize(fmt);
+    if (value.length == 1) {
+      value = value[0];
+    }
+    output.set(key, value);
+  }
+  return output;
+}
+function _unpack_struct_from(structure, buf, offset = 0) {
+  var output = /* @__PURE__ */ new Map();
+  for (let [key, fmt] of structure.entries()) {
+    let value = struct.unpack_from("<" + fmt, buf, offset);
+    offset += struct.calcsize(fmt);
+    if (value.length == 1) {
+      value = value[0];
+    }
+    output.set(key, value);
+  }
+  return output;
+}
+function assert(thing) {
+  if (!thing) {
+    thing();
+  }
+}
+function _structure_size(structure) {
+  var fmt = "<" + Array.from(structure.values()).join("");
+  return struct.calcsize(fmt);
+}
+function _padded_size(size, padding_multiple = 8) {
+  return Math.ceil(size / padding_multiple) * padding_multiple;
+}
+var dtype_to_format = {
+  "u": "Uint",
+  "i": "Int",
+  "f": "Float"
+};
+function dtype_getter(dtype_str) {
+  var big_endian = struct._is_big_endian(dtype_str);
+  var getter, nbytes;
+  if (/S/.test(dtype_str)) {
+    getter = "getString";
+    nbytes = ((dtype_str.match(/S(\d*)/) || [])[1] || 1) | 0;
+  } else {
+    let [_, fstr, bytestr] = dtype_str.match(/[<>=!@]?(i|u|f)(\d*)/);
+    nbytes = parseInt(bytestr || 4, 10);
+    let nbits = nbytes * 8;
+    getter = "get" + dtype_to_format[fstr] + nbits.toFixed();
+  }
+  return [getter, big_endian, nbytes];
+}
+var Struct = class {
+  constructor() {
+    this.big_endian = isBigEndian();
+    this.getters = {
+      "s": "getUint8",
+      "b": "getInt8",
+      "B": "getUint8",
+      "h": "getInt16",
+      "H": "getUint16",
+      "i": "getInt32",
+      "I": "getUint32",
+      "l": "getInt32",
+      "L": "getUint32",
+      "q": "getInt64",
+      "Q": "getUint64",
+      "f": "getFloat32",
+      "d": "getFloat64"
+    };
+    this.byte_lengths = {
+      "s": 1,
+      "b": 1,
+      "B": 1,
+      "h": 2,
+      "H": 2,
+      "i": 4,
+      "I": 4,
+      "l": 4,
+      "L": 4,
+      "q": 8,
+      "Q": 8,
+      "f": 4,
+      "d": 8
+    };
+    let all_formats = Object.keys(this.byte_lengths).join("");
+    this.fmt_size_regex = "(\\d*)([" + all_formats + "])";
+  }
+  calcsize(fmt) {
+    var size = 0;
+    var match;
+    var regex = new RegExp(this.fmt_size_regex, "g");
+    while ((match = regex.exec(fmt)) !== null) {
+      let n = parseInt(match[1] || 1, 10);
+      let f = match[2];
+      let subsize = this.byte_lengths[f];
+      size += n * subsize;
+    }
+    return size;
+  }
+  _is_big_endian(fmt) {
+    var big_endian;
+    if (/^</.test(fmt)) {
+      big_endian = false;
+    } else if (/^(!|>)/.test(fmt)) {
+      big_endian = true;
+    } else {
+      big_endian = this.big_endian;
+    }
+    return big_endian;
+  }
+  async unpack_from_async(fmt, async_buf, offset) {
+    var offset = Number(offset || 0);
+    const total_size = this.calcsize(fmt);
+    const local_buffer = await async_buf.slice(offset, offset + total_size);
+    let local_offset = 0;
+    var view = new DataView64(local_buffer);
+    var output = [];
+    var big_endian = this._is_big_endian(fmt);
+    var match;
+    var regex = new RegExp(this.fmt_size_regex, "g");
+    while ((match = regex.exec(fmt)) !== null) {
+      let n = parseInt(match[1] || 1, 10);
+      let f = match[2];
+      let getter = this.getters[f];
+      let size = this.byte_lengths[f];
+      if (f == "s") {
+        output.push(new TextDecoder().decode(local_buffer.slice(local_offset, local_offset + n)));
+        local_offset += n;
+      } else {
+        for (var i = 0; i < n; i++) {
+          output.push(view[getter](local_offset, !big_endian));
+          local_offset += size;
+        }
+      }
+    }
+    return output;
+  }
+  unpack_from(fmt, buffer, offset) {
+    var offset = Number(offset || 0);
+    const total_size = this.calcsize(fmt);
+    const local_buffer = buffer.slice(offset, offset + total_size);
+    let local_offset = 0;
+    var view = new DataView64(local_buffer);
+    var output = [];
+    var big_endian = this._is_big_endian(fmt);
+    var match;
+    var regex = new RegExp(this.fmt_size_regex, "g");
+    while ((match = regex.exec(fmt)) !== null) {
+      let n = parseInt(match[1] || 1, 10);
+      let f = match[2];
+      let getter = this.getters[f];
+      let size = this.byte_lengths[f];
+      if (f == "s") {
+        output.push(new TextDecoder().decode(local_buffer.slice(local_offset, local_offset + n)));
+        local_offset += n;
+      } else {
+        for (var i = 0; i < n; i++) {
+          output.push(view[getter](local_offset, !big_endian));
+          local_offset += size;
+        }
+      }
+    }
+    return output;
+  }
+};
+var struct = new Struct();
+function isBigEndian() {
+  const array = new Uint8Array(4);
+  const view = new Uint32Array(array.buffer);
+  return !((view[0] = 1) & array[0]);
+}
+var DataView64 = class extends DataView {
+  getUint64(byteOffset, littleEndian) {
+    const left = BigInt(this.getUint32(byteOffset, littleEndian));
+    const right = BigInt(this.getUint32(byteOffset + 4, littleEndian));
+    let combined = littleEndian ? left + (right << 32n) : (left << 32n) + right;
+    return Number(combined);
+  }
+  getInt64(byteOffset, littleEndian) {
+    var low, high;
+    if (littleEndian) {
+      low = this.getUint32(byteOffset, true);
+      high = this.getInt32(byteOffset + 4, true);
+    } else {
+      high = this.getInt32(byteOffset, false);
+      low = this.getUint32(byteOffset + 4, false);
+    }
+    let combined = BigInt(low) + (BigInt(high) << 32n);
+    return Number(combined);
+  }
+  getString(byteOffset, littleEndian, length) {
+    const str_buffer = this.buffer.slice(byteOffset, byteOffset + length);
+    const decoder = new TextDecoder();
+    return decoder.decode(str_buffer);
+  }
+  getVLENStruct(byteOffset, littleEndian, length) {
+    let item_size = this.getUint32(byteOffset, littleEndian);
+    let collection_address = this.getUint64(byteOffset + 4, littleEndian);
+    let object_index = this.getUint32(byteOffset + 12, littleEndian);
+    return [item_size, collection_address, object_index];
+  }
+};
+function bitSize(integer) {
+  return integer.toString(2).length;
+}
+function _unpack_integer(nbytes, buf, offset = 0, littleEndian = true) {
+  const local_buffer = buf.slice(offset, offset + nbytes);
+  let bytes = new Uint8Array(local_buffer);
+  if (!littleEndian) {
+    bytes.reverse();
+  }
+  let integer = bytes.reduce((accumulator, currentValue, index) => accumulator + (currentValue << index * 8), 0);
+  return integer;
+}
+
+// esm/datatype-msg.js
+var DatatypeMessage = class {
+  constructor(buf, offset) {
+    this.buf = buf;
+    this.offset = offset;
+    this.dtype = this.determine_dtype();
+  }
+  async determine_dtype() {
+    let datatype_msg = await _unpack_struct_from_async(DATATYPE_MSG, this.buf, this.offset);
+    this.offset += DATATYPE_MSG_SIZE;
+    let datatype_class = datatype_msg.get("class_and_version") & 15;
+    if (datatype_class == DATATYPE_FIXED_POINT) {
+      return this._determine_dtype_fixed_point(datatype_msg);
+    } else if (datatype_class == DATATYPE_FLOATING_POINT) {
+      return this._determine_dtype_floating_point(datatype_msg);
+    } else if (datatype_class == DATATYPE_TIME) {
+      throw "Time datatype class not supported.";
+    } else if (datatype_class == DATATYPE_STRING) {
+      return this._determine_dtype_string(datatype_msg);
+    } else if (datatype_class == DATATYPE_BITFIELD) {
+      throw "Bitfield datatype class not supported.";
+    } else if (datatype_class == DATATYPE_OPAQUE) {
+      return {
+        datatype_class: DATATYPE_OPAQUE,
+        size: datatype_msg.get("size")
+      };
+    } else if (datatype_class == DATATYPE_COMPOUND) {
+      return this._determine_dtype_compound(datatype_msg);
+    } else if (datatype_class == DATATYPE_REFERENCE) {
+      return ["REFERENCE", datatype_msg.get("size")];
+    } else if (datatype_class == DATATYPE_ENUMERATED) {
+      return this.determine_dtype();
+    } else if (datatype_class == DATATYPE_ARRAY) {
+      throw "Array datatype class not supported.";
+    } else if (datatype_class == DATATYPE_VARIABLE_LENGTH) {
+      let vlen_type = this._determine_dtype_vlen(datatype_msg);
+      if (vlen_type[0] == "VLEN_SEQUENCE") {
+        let base_type = this.determine_dtype();
+        vlen_type = ["VLEN_SEQUENCE", base_type];
+      }
+      return vlen_type;
+    } else {
+      throw "Invalid datatype class " + datatype_class;
+    }
+  }
+  _determine_dtype_fixed_point(datatype_msg) {
+    let length_in_bytes = datatype_msg.get("size");
+    if (![1, 2, 4, 8].includes(length_in_bytes)) {
+      throw "Unsupported datatype size";
+    }
+    let signed = datatype_msg.get("class_bit_field_0") & 8;
+    var dtype_char;
+    if (signed > 0) {
+      dtype_char = "i";
+    } else {
+      dtype_char = "u";
+    }
+    let byte_order = datatype_msg.get("class_bit_field_0") & 1;
+    var byte_order_char;
+    if (byte_order == 0) {
+      byte_order_char = "<";
+    } else {
+      byte_order_char = ">";
+    }
+    this.offset += 4;
+    return byte_order_char + dtype_char + length_in_bytes.toFixed();
+  }
+  _determine_dtype_floating_point(datatype_msg) {
+    let length_in_bytes = datatype_msg.get("size");
+    if (![1, 2, 4, 8].includes(length_in_bytes)) {
+      throw "Unsupported datatype size";
+    }
+    let dtype_char = "f";
+    let byte_order = datatype_msg.get("class_bit_field_0") & 1;
+    var byte_order_char;
+    if (byte_order == 0) {
+      byte_order_char = "<";
+    } else {
+      byte_order_char = ">";
+    }
+    this.offset += 12;
+    return byte_order_char + dtype_char + length_in_bytes.toFixed();
+  }
+  _determine_dtype_string(datatype_msg) {
+    return "S" + datatype_msg.get("size").toFixed();
+  }
+  _determine_dtype_vlen(datatype_msg) {
+    let vlen_type = datatype_msg.get("class_bit_field_0") & 1;
+    if (vlen_type != 1) {
+      return ["VLEN_SEQUENCE", 0, 0];
+    }
+    let padding_type = datatype_msg.get("class_bit_field_0") >> 4;
+    let character_set = datatype_msg.get("class_bit_field_1") & 1;
+    return ["VLEN_STRING", padding_type, character_set];
+  }
+  _determine_dtype_compound(datatype_msg) {
+    throw "Compound type not yet implemented!";
+  }
+};
+var DATATYPE_MSG = /* @__PURE__ */ new Map([
+  ["class_and_version", "B"],
+  ["class_bit_field_0", "B"],
+  ["class_bit_field_1", "B"],
+  ["class_bit_field_2", "B"],
+  ["size", "I"]
+]);
+var DATATYPE_MSG_SIZE = _structure_size(DATATYPE_MSG);
+var COMPOUND_PROP_DESC_V1 = /* @__PURE__ */ new Map([
+  ["offset", "I"],
+  ["dimensionality", "B"],
+  ["reserved_0", "B"],
+  ["reserved_1", "B"],
+  ["reserved_2", "B"],
+  ["permutation", "I"],
+  ["reserved_3", "I"],
+  ["dim_size_1", "I"],
+  ["dim_size_2", "I"],
+  ["dim_size_3", "I"],
+  ["dim_size_4", "I"]
+]);
+_structure_size(COMPOUND_PROP_DESC_V1);
+var DATATYPE_FIXED_POINT = 0;
+var DATATYPE_FLOATING_POINT = 1;
+var DATATYPE_TIME = 2;
+var DATATYPE_STRING = 3;
+var DATATYPE_BITFIELD = 4;
+var DATATYPE_OPAQUE = 5;
+var DATATYPE_COMPOUND = 6;
+var DATATYPE_REFERENCE = 7;
+var DATATYPE_ENUMERATED = 8;
+var DATATYPE_VARIABLE_LENGTH = 9;
+var DATATYPE_ARRAY = 10;
+function zero$1(buf) {
+  let len = buf.length;
+  while (--len >= 0) {
+    buf[len] = 0;
+  }
+}
+var MIN_MATCH$1 = 3;
+var MAX_MATCH$1 = 258;
+var LENGTH_CODES$1 = 29;
+var LITERALS$1 = 256;
+var L_CODES$1 = LITERALS$1 + 1 + LENGTH_CODES$1;
+var D_CODES$1 = 30;
+var DIST_CODE_LEN = 512;
+var static_ltree = new Array((L_CODES$1 + 2) * 2);
+zero$1(static_ltree);
+var static_dtree = new Array(D_CODES$1 * 2);
+zero$1(static_dtree);
+var _dist_code = new Array(DIST_CODE_LEN);
+zero$1(_dist_code);
+var _length_code = new Array(MAX_MATCH$1 - MIN_MATCH$1 + 1);
+zero$1(_length_code);
+var base_length = new Array(LENGTH_CODES$1);
+zero$1(base_length);
+var base_dist = new Array(D_CODES$1);
+zero$1(base_dist);
+var adler32 = (adler, buf, len, pos) => {
+  let s1 = adler & 65535 | 0, s2 = adler >>> 16 & 65535 | 0, n = 0;
+  while (len !== 0) {
+    n = len > 2e3 ? 2e3 : len;
+    len -= n;
+    do {
+      s1 = s1 + buf[pos++] | 0;
+      s2 = s2 + s1 | 0;
+    } while (--n);
+    s1 %= 65521;
+    s2 %= 65521;
+  }
+  return s1 | s2 << 16 | 0;
+};
+var adler32_1 = adler32;
+var makeTable = () => {
+  let c, table = [];
+  for (var n = 0; n < 256; n++) {
+    c = n;
+    for (var k = 0; k < 8; k++) {
+      c = c & 1 ? 3988292384 ^ c >>> 1 : c >>> 1;
+    }
+    table[n] = c;
+  }
+  return table;
+};
+var crcTable = new Uint32Array(makeTable());
+var crc32 = (crc, buf, len, pos) => {
+  const t = crcTable;
+  const end = pos + len;
+  crc ^= -1;
+  for (let i = pos; i < end; i++) {
+    crc = crc >>> 8 ^ t[(crc ^ buf[i]) & 255];
+  }
+  return crc ^ -1;
+};
+var crc32_1 = crc32;
+var messages = {
+  2: "need dictionary",
+  1: "stream end",
+  0: "",
+  "-1": "file error",
+  "-2": "stream error",
+  "-3": "data error",
+  "-4": "insufficient memory",
+  "-5": "buffer error",
+  "-6": "incompatible version"
+};
+var constants$2 = {
+  Z_NO_FLUSH: 0,
+  Z_PARTIAL_FLUSH: 1,
+  Z_SYNC_FLUSH: 2,
+  Z_FULL_FLUSH: 3,
+  Z_FINISH: 4,
+  Z_BLOCK: 5,
+  Z_TREES: 6,
+  Z_OK: 0,
+  Z_STREAM_END: 1,
+  Z_NEED_DICT: 2,
+  Z_ERRNO: -1,
+  Z_STREAM_ERROR: -2,
+  Z_DATA_ERROR: -3,
+  Z_MEM_ERROR: -4,
+  Z_BUF_ERROR: -5,
+  Z_NO_COMPRESSION: 0,
+  Z_BEST_SPEED: 1,
+  Z_BEST_COMPRESSION: 9,
+  Z_DEFAULT_COMPRESSION: -1,
+  Z_FILTERED: 1,
+  Z_HUFFMAN_ONLY: 2,
+  Z_RLE: 3,
+  Z_FIXED: 4,
+  Z_DEFAULT_STRATEGY: 0,
+  Z_BINARY: 0,
+  Z_TEXT: 1,
+  Z_UNKNOWN: 2,
+  Z_DEFLATED: 8
+};
+var _has = (obj, key) => {
+  return Object.prototype.hasOwnProperty.call(obj, key);
+};
+var assign = function(obj) {
+  const sources = Array.prototype.slice.call(arguments, 1);
+  while (sources.length) {
+    const source = sources.shift();
+    if (!source) {
+      continue;
+    }
+    if (typeof source !== "object") {
+      throw new TypeError(source + "must be non-object");
+    }
+    for (const p in source) {
+      if (_has(source, p)) {
+        obj[p] = source[p];
+      }
+    }
+  }
+  return obj;
+};
+var flattenChunks = (chunks) => {
+  let len = 0;
+  for (let i = 0, l = chunks.length; i < l; i++) {
+    len += chunks[i].length;
+  }
+  const result = new Uint8Array(len);
+  for (let i = 0, pos = 0, l = chunks.length; i < l; i++) {
+    let chunk = chunks[i];
+    result.set(chunk, pos);
+    pos += chunk.length;
+  }
+  return result;
+};
+var common = {
+  assign,
+  flattenChunks
+};
+var STR_APPLY_UIA_OK = true;
+try {
+  String.fromCharCode.apply(null, new Uint8Array(1));
+} catch (__) {
+  STR_APPLY_UIA_OK = false;
+}
+var _utf8len = new Uint8Array(256);
+for (let q = 0; q < 256; q++) {
+  _utf8len[q] = q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1;
+}
+_utf8len[254] = _utf8len[254] = 1;
+var string2buf = (str) => {
+  if (typeof TextEncoder === "function" && TextEncoder.prototype.encode) {
+    return new TextEncoder().encode(str);
+  }
+  let buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;
+  for (m_pos = 0; m_pos < str_len; m_pos++) {
+    c = str.charCodeAt(m_pos);
+    if ((c & 64512) === 55296 && m_pos + 1 < str_len) {
+      c2 = str.charCodeAt(m_pos + 1);
+      if ((c2 & 64512) === 56320) {
+        c = 65536 + (c - 55296 << 10) + (c2 - 56320);
+        m_pos++;
+      }
+    }
+    buf_len += c < 128 ? 1 : c < 2048 ? 2 : c < 65536 ? 3 : 4;
+  }
+  buf = new Uint8Array(buf_len);
+  for (i = 0, m_pos = 0; i < buf_len; m_pos++) {
+    c = str.charCodeAt(m_pos);
+    if ((c & 64512) === 55296 && m_pos + 1 < str_len) {
+      c2 = str.charCodeAt(m_pos + 1);
+      if ((c2 & 64512) === 56320) {
+        c = 65536 + (c - 55296 << 10) + (c2 - 56320);
+        m_pos++;
+      }
+    }
+    if (c < 128) {
+      buf[i++] = c;
+    } else if (c < 2048) {
+      buf[i++] = 192 | c >>> 6;
+      buf[i++] = 128 | c & 63;
+    } else if (c < 65536) {
+      buf[i++] = 224 | c >>> 12;
+      buf[i++] = 128 | c >>> 6 & 63;
+      buf[i++] = 128 | c & 63;
+    } else {
+      buf[i++] = 240 | c >>> 18;
+      buf[i++] = 128 | c >>> 12 & 63;
+      buf[i++] = 128 | c >>> 6 & 63;
+      buf[i++] = 128 | c & 63;
+    }
+  }
+  return buf;
+};
+var buf2binstring = (buf, len) => {
+  if (len < 65534) {
+    if (buf.subarray && STR_APPLY_UIA_OK) {
+      return String.fromCharCode.apply(null, buf.length === len ? buf : buf.subarray(0, len));
+    }
+  }
+  let result = "";
+  for (let i = 0; i < len; i++) {
+    result += String.fromCharCode(buf[i]);
+  }
+  return result;
+};
+var buf2string = (buf, max) => {
+  const len = max || buf.length;
+  if (typeof TextDecoder === "function" && TextDecoder.prototype.decode) {
+    return new TextDecoder().decode(buf.subarray(0, max));
+  }
+  let i, out;
+  const utf16buf = new Array(len * 2);
+  for (out = 0, i = 0; i < len; ) {
+    let c = buf[i++];
+    if (c < 128) {
+      utf16buf[out++] = c;
+      continue;
+    }
+    let c_len = _utf8len[c];
+    if (c_len > 4) {
+      utf16buf[out++] = 65533;
+      i += c_len - 1;
+      continue;
+    }
+    c &= c_len === 2 ? 31 : c_len === 3 ? 15 : 7;
+    while (c_len > 1 && i < len) {
+      c = c << 6 | buf[i++] & 63;
+      c_len--;
+    }
+    if (c_len > 1) {
+      utf16buf[out++] = 65533;
+      continue;
+    }
+    if (c < 65536) {
+      utf16buf[out++] = c;
+    } else {
+      c -= 65536;
+      utf16buf[out++] = 55296 | c >> 10 & 1023;
+      utf16buf[out++] = 56320 | c & 1023;
+    }
+  }
+  return buf2binstring(utf16buf, out);
+};
+var utf8border = (buf, max) => {
+  max = max || buf.length;
+  if (max > buf.length) {
+    max = buf.length;
+  }
+  let pos = max - 1;
+  while (pos >= 0 && (buf[pos] & 192) === 128) {
+    pos--;
+  }
+  if (pos < 0) {
+    return max;
+  }
+  if (pos === 0) {
+    return max;
+  }
+  return pos + _utf8len[buf[pos]] > max ? pos : max;
+};
+var strings = {
+  string2buf,
+  buf2string,
+  utf8border
+};
+function ZStream() {
+  this.input = null;
+  this.next_in = 0;
+  this.avail_in = 0;
+  this.total_in = 0;
+  this.output = null;
+  this.next_out = 0;
+  this.avail_out = 0;
+  this.total_out = 0;
+  this.msg = "";
+  this.state = null;
+  this.data_type = 2;
+  this.adler = 0;
+}
+var zstream = ZStream;
+var BAD$1 = 30;
+var TYPE$1 = 12;
+var inffast = function inflate_fast(strm, start) {
+  let _in;
+  let last;
+  let _out;
+  let beg;
+  let end;
+  let dmax;
+  let wsize;
+  let whave;
+  let wnext;
+  let s_window;
+  let hold;
+  let bits;
+  let lcode;
+  let dcode;
+  let lmask;
+  let dmask;
+  let here;
+  let op;
+  let len;
+  let dist;
+  let from;
+  let from_source;
+  let input, output;
+  const state = strm.state;
+  _in = strm.next_in;
+  input = strm.input;
+  last = _in + (strm.avail_in - 5);
+  _out = strm.next_out;
+  output = strm.output;
+  beg = _out - (start - strm.avail_out);
+  end = _out + (strm.avail_out - 257);
+  dmax = state.dmax;
+  wsize = state.wsize;
+  whave = state.whave;
+  wnext = state.wnext;
+  s_window = state.window;
+  hold = state.hold;
+  bits = state.bits;
+  lcode = state.lencode;
+  dcode = state.distcode;
+  lmask = (1 << state.lenbits) - 1;
+  dmask = (1 << state.distbits) - 1;
+  top:
+    do {
+      if (bits < 15) {
+        hold += input[_in++] << bits;
+        bits += 8;
+        hold += input[_in++] << bits;
+        bits += 8;
+      }
+      here = lcode[hold & lmask];
+      dolen:
+        for (; ; ) {
+          op = here >>> 24;
+          hold >>>= op;
+          bits -= op;
+          op = here >>> 16 & 255;
+          if (op === 0) {
+            output[_out++] = here & 65535;
+          } else if (op & 16) {
+            len = here & 65535;
+            op &= 15;
+            if (op) {
+              if (bits < op) {
+                hold += input[_in++] << bits;
+                bits += 8;
+              }
+              len += hold & (1 << op) - 1;
+              hold >>>= op;
+              bits -= op;
+            }
+            if (bits < 15) {
+              hold += input[_in++] << bits;
+              bits += 8;
+              hold += input[_in++] << bits;
+              bits += 8;
+            }
+            here = dcode[hold & dmask];
+            dodist:
+              for (; ; ) {
+                op = here >>> 24;
+                hold >>>= op;
+                bits -= op;
+                op = here >>> 16 & 255;
+                if (op & 16) {
+                  dist = here & 65535;
+                  op &= 15;
+                  if (bits < op) {
+                    hold += input[_in++] << bits;
+                    bits += 8;
+                    if (bits < op) {
+                      hold += input[_in++] << bits;
+                      bits += 8;
+                    }
+                  }
+                  dist += hold & (1 << op) - 1;
+                  if (dist > dmax) {
+                    strm.msg = "invalid distance too far back";
+                    state.mode = BAD$1;
+                    break top;
+                  }
+                  hold >>>= op;
+                  bits -= op;
+                  op = _out - beg;
+                  if (dist > op) {
+                    op = dist - op;
+                    if (op > whave) {
+                      if (state.sane) {
+                        strm.msg = "invalid distance too far back";
+                        state.mode = BAD$1;
+                        break top;
+                      }
+                    }
+                    from = 0;
+                    from_source = s_window;
+                    if (wnext === 0) {
+                      from += wsize - op;
+                      if (op < len) {
+                        len -= op;
+                        do {
+                          output[_out++] = s_window[from++];
+                        } while (--op);
+                        from = _out - dist;
+                        from_source = output;
+                      }
+                    } else if (wnext < op) {
+                      from += wsize + wnext - op;
+                      op -= wnext;
+                      if (op < len) {
+                        len -= op;
+                        do {
+                          output[_out++] = s_window[from++];
+                        } while (--op);
+                        from = 0;
+                        if (wnext < len) {
+                          op = wnext;
+                          len -= op;
+                          do {
+                            output[_out++] = s_window[from++];
+                          } while (--op);
+                          from = _out - dist;
+                          from_source = output;
+                        }
+                      }
+                    } else {
+                      from += wnext - op;
+                      if (op < len) {
+                        len -= op;
+                        do {
+                          output[_out++] = s_window[from++];
+                        } while (--op);
+                        from = _out - dist;
+                        from_source = output;
+                      }
+                    }
+                    while (len > 2) {
+                      output[_out++] = from_source[from++];
+                      output[_out++] = from_source[from++];
+                      output[_out++] = from_source[from++];
+                      len -= 3;
+                    }
+                    if (len) {
+                      output[_out++] = from_source[from++];
+                      if (len > 1) {
+                        output[_out++] = from_source[from++];
+                      }
+                    }
+                  } else {
+                    from = _out - dist;
+                    do {
+                      output[_out++] = output[from++];
+                      output[_out++] = output[from++];
+                      output[_out++] = output[from++];
+                      len -= 3;
+                    } while (len > 2);
+                    if (len) {
+                      output[_out++] = output[from++];
+                      if (len > 1) {
+                        output[_out++] = output[from++];
+                      }
+                    }
+                  }
+                } else if ((op & 64) === 0) {
+                  here = dcode[(here & 65535) + (hold & (1 << op) - 1)];
+                  continue dodist;
+                } else {
+                  strm.msg = "invalid distance code";
+                  state.mode = BAD$1;
+                  break top;
+                }
+                break;
+              }
+          } else if ((op & 64) === 0) {
+            here = lcode[(here & 65535) + (hold & (1 << op) - 1)];
+            continue dolen;
+          } else if (op & 32) {
+            state.mode = TYPE$1;
+            break top;
+          } else {
+            strm.msg = "invalid literal/length code";
+            state.mode = BAD$1;
+            break top;
+          }
+          break;
+        }
+    } while (_in < last && _out < end);
+  len = bits >> 3;
+  _in -= len;
+  bits -= len << 3;
+  hold &= (1 << bits) - 1;
+  strm.next_in = _in;
+  strm.next_out = _out;
+  strm.avail_in = _in < last ? 5 + (last - _in) : 5 - (_in - last);
+  strm.avail_out = _out < end ? 257 + (end - _out) : 257 - (_out - end);
+  state.hold = hold;
+  state.bits = bits;
+  return;
+};
+var MAXBITS = 15;
+var ENOUGH_LENS$1 = 852;
+var ENOUGH_DISTS$1 = 592;
+var CODES$1 = 0;
+var LENS$1 = 1;
+var DISTS$1 = 2;
+var lbase = new Uint16Array([
+  3,
+  4,
+  5,
+  6,
+  7,
+  8,
+  9,
+  10,
+  11,
+  13,
+  15,
+  17,
+  19,
+  23,
+  27,
+  31,
+  35,
+  43,
+  51,
+  59,
+  67,
+  83,
+  99,
+  115,
+  131,
+  163,
+  195,
+  227,
+  258,
+  0,
+  0
+]);
+var lext = new Uint8Array([
+  16,
+  16,
+  16,
+  16,
+  16,
+  16,
+  16,
+  16,
+  17,
+  17,
+  17,
+  17,
+  18,
+  18,
+  18,
+  18,
+  19,
+  19,
+  19,
+  19,
+  20,
+  20,
+  20,
+  20,
+  21,
+  21,
+  21,
+  21,
+  16,
+  72,
+  78
+]);
+var dbase = new Uint16Array([
+  1,
+  2,
+  3,
+  4,
+  5,
+  7,
+  9,
+  13,
+  17,
+  25,
+  33,
+  49,
+  65,
+  97,
+  129,
+  193,
+  257,
+  385,
+  513,
+  769,
+  1025,
+  1537,
+  2049,
+  3073,
+  4097,
+  6145,
+  8193,
+  12289,
+  16385,
+  24577,
+  0,
+  0
+]);
+var dext = new Uint8Array([
+  16,
+  16,
+  16,
+  16,
+  17,
+  17,
+  18,
+  18,
+  19,
+  19,
+  20,
+  20,
+  21,
+  21,
+  22,
+  22,
+  23,
+  23,
+  24,
+  24,
+  25,
+  25,
+  26,
+  26,
+  27,
+  27,
+  28,
+  28,
+  29,
+  29,
+  64,
+  64
+]);
+var inflate_table = (type, lens, lens_index, codes, table, table_index, work, opts) => {
+  const bits = opts.bits;
+  let len = 0;
+  let sym = 0;
+  let min = 0, max = 0;
+  let root = 0;
+  let curr = 0;
+  let drop = 0;
+  let left = 0;
+  let used = 0;
+  let huff = 0;
+  let incr;
+  let fill;
+  let low;
+  let mask;
+  let next;
+  let base = null;
+  let base_index = 0;
+  let end;
+  const count = new Uint16Array(MAXBITS + 1);
+  const offs = new Uint16Array(MAXBITS + 1);
+  let extra = null;
+  let extra_index = 0;
+  let here_bits, here_op, here_val;
+  for (len = 0; len <= MAXBITS; len++) {
+    count[len] = 0;
+  }
+  for (sym = 0; sym < codes; sym++) {
+    count[lens[lens_index + sym]]++;
+  }
+  root = bits;
+  for (max = MAXBITS; max >= 1; max--) {
+    if (count[max] !== 0) {
+      break;
+    }
+  }
+  if (root > max) {
+    root = max;
+  }
+  if (max === 0) {
+    table[table_index++] = 1 << 24 | 64 << 16 | 0;
+    table[table_index++] = 1 << 24 | 64 << 16 | 0;
+    opts.bits = 1;
+    return 0;
+  }
+  for (min = 1; min < max; min++) {
+    if (count[min] !== 0) {
+      break;
+    }
+  }
+  if (root < min) {
+    root = min;
+  }
+  left = 1;
+  for (len = 1; len <= MAXBITS; len++) {
+    left <<= 1;
+    left -= count[len];
+    if (left < 0) {
+      return -1;
+    }
+  }
+  if (left > 0 && (type === CODES$1 || max !== 1)) {
+    return -1;
+  }
+  offs[1] = 0;
+  for (len = 1; len < MAXBITS; len++) {
+    offs[len + 1] = offs[len] + count[len];
+  }
+  for (sym = 0; sym < codes; sym++) {
+    if (lens[lens_index + sym] !== 0) {
+      work[offs[lens[lens_index + sym]]++] = sym;
+    }
+  }
+  if (type === CODES$1) {
+    base = extra = work;
+    end = 19;
+  } else if (type === LENS$1) {
+    base = lbase;
+    base_index -= 257;
+    extra = lext;
+    extra_index -= 257;
+    end = 256;
+  } else {
+    base = dbase;
+    extra = dext;
+    end = -1;
+  }
+  huff = 0;
+  sym = 0;
+  len = min;
+  next = table_index;
+  curr = root;
+  drop = 0;
+  low = -1;
+  used = 1 << root;
+  mask = used - 1;
+  if (type === LENS$1 && used > ENOUGH_LENS$1 || type === DISTS$1 && used > ENOUGH_DISTS$1) {
+    return 1;
+  }
+  for (; ; ) {
+    here_bits = len - drop;
+    if (work[sym] < end) {
+      here_op = 0;
+      here_val = work[sym];
+    } else if (work[sym] > end) {
+      here_op = extra[extra_index + work[sym]];
+      here_val = base[base_index + work[sym]];
+    } else {
+      here_op = 32 + 64;
+      here_val = 0;
+    }
+    incr = 1 << len - drop;
+    fill = 1 << curr;
+    min = fill;
+    do {
+      fill -= incr;
+      table[next + (huff >> drop) + fill] = here_bits << 24 | here_op << 16 | here_val | 0;
+    } while (fill !== 0);
+    incr = 1 << len - 1;
+    while (huff & incr) {
+      incr >>= 1;
+    }
+    if (incr !== 0) {
+      huff &= incr - 1;
+      huff += incr;
+    } else {
+      huff = 0;
+    }
+    sym++;
+    if (--count[len] === 0) {
+      if (len === max) {
+        break;
+      }
+      len = lens[lens_index + work[sym]];
+    }
+    if (len > root && (huff & mask) !== low) {
+      if (drop === 0) {
+        drop = root;
+      }
+      next += min;
+      curr = len - drop;
+      left = 1 << curr;
+      while (curr + drop < max) {
+        left -= count[curr + drop];
+        if (left <= 0) {
+          break;
+        }
+        curr++;
+        left <<= 1;
+      }
+      used += 1 << curr;
+      if (type === LENS$1 && used > ENOUGH_LENS$1 || type === DISTS$1 && used > ENOUGH_DISTS$1) {
+        return 1;
+      }
+      low = huff & mask;
+      table[low] = root << 24 | curr << 16 | next - table_index | 0;
+    }
+  }
+  if (huff !== 0) {
+    table[next + huff] = len - drop << 24 | 64 << 16 | 0;
+  }
+  opts.bits = root;
+  return 0;
+};
+var inftrees = inflate_table;
+var CODES = 0;
+var LENS = 1;
+var DISTS = 2;
+var {
+  Z_FINISH: Z_FINISH$1,
+  Z_BLOCK,
+  Z_TREES,
+  Z_OK: Z_OK$1,
+  Z_STREAM_END: Z_STREAM_END$1,
+  Z_NEED_DICT: Z_NEED_DICT$1,
+  Z_STREAM_ERROR: Z_STREAM_ERROR$1,
+  Z_DATA_ERROR: Z_DATA_ERROR$1,
+  Z_MEM_ERROR: Z_MEM_ERROR$1,
+  Z_BUF_ERROR,
+  Z_DEFLATED
+} = constants$2;
+var HEAD = 1;
+var FLAGS = 2;
+var TIME = 3;
+var OS = 4;
+var EXLEN = 5;
+var EXTRA = 6;
+var NAME = 7;
+var COMMENT = 8;
+var HCRC = 9;
+var DICTID = 10;
+var DICT = 11;
+var TYPE = 12;
+var TYPEDO = 13;
+var STORED = 14;
+var COPY_ = 15;
+var COPY = 16;
+var TABLE = 17;
+var LENLENS = 18;
+var CODELENS = 19;
+var LEN_ = 20;
+var LEN = 21;
+var LENEXT = 22;
+var DIST = 23;
+var DISTEXT = 24;
+var MATCH = 25;
+var LIT = 26;
+var CHECK = 27;
+var LENGTH = 28;
+var DONE = 29;
+var BAD = 30;
+var MEM = 31;
+var SYNC = 32;
+var ENOUGH_LENS = 852;
+var ENOUGH_DISTS = 592;
+var MAX_WBITS = 15;
+var DEF_WBITS = MAX_WBITS;
+var zswap32 = (q) => {
+  return (q >>> 24 & 255) + (q >>> 8 & 65280) + ((q & 65280) << 8) + ((q & 255) << 24);
+};
+function InflateState() {
+  this.mode = 0;
+  this.last = false;
+  this.wrap = 0;
+  this.havedict = false;
+  this.flags = 0;
+  this.dmax = 0;
+  this.check = 0;
+  this.total = 0;
+  this.head = null;
+  this.wbits = 0;
+  this.wsize = 0;
+  this.whave = 0;
+  this.wnext = 0;
+  this.window = null;
+  this.hold = 0;
+  this.bits = 0;
+  this.length = 0;
+  this.offset = 0;
+  this.extra = 0;
+  this.lencode = null;
+  this.distcode = null;
+  this.lenbits = 0;
+  this.distbits = 0;
+  this.ncode = 0;
+  this.nlen = 0;
+  this.ndist = 0;
+  this.have = 0;
+  this.next = null;
+  this.lens = new Uint16Array(320);
+  this.work = new Uint16Array(288);
+  this.lendyn = null;
+  this.distdyn = null;
+  this.sane = 0;
+  this.back = 0;
+  this.was = 0;
+}
+var inflateResetKeep = (strm) => {
+  if (!strm || !strm.state) {
+    return Z_STREAM_ERROR$1;
+  }
+  const state = strm.state;
+  strm.total_in = strm.total_out = state.total = 0;
+  strm.msg = "";
+  if (state.wrap) {
+    strm.adler = state.wrap & 1;
+  }
+  state.mode = HEAD;
+  state.last = 0;
+  state.havedict = 0;
+  state.dmax = 32768;
+  state.head = null;
+  state.hold = 0;
+  state.bits = 0;
+  state.lencode = state.lendyn = new Int32Array(ENOUGH_LENS);
+  state.distcode = state.distdyn = new Int32Array(ENOUGH_DISTS);
+  state.sane = 1;
+  state.back = -1;
+  return Z_OK$1;
+};
+var inflateReset = (strm) => {
+  if (!strm || !strm.state) {
+    return Z_STREAM_ERROR$1;
+  }
+  const state = strm.state;
+  state.wsize = 0;
+  state.whave = 0;
+  state.wnext = 0;
+  return inflateResetKeep(strm);
+};
+var inflateReset2 = (strm, windowBits) => {
+  let wrap;
+  if (!strm || !strm.state) {
+    return Z_STREAM_ERROR$1;
+  }
+  const state = strm.state;
+  if (windowBits < 0) {
+    wrap = 0;
+    windowBits = -windowBits;
+  } else {
+    wrap = (windowBits >> 4) + 1;
+    if (windowBits < 48) {
+      windowBits &= 15;
+    }
+  }
+  if (windowBits && (windowBits < 8 || windowBits > 15)) {
+    return Z_STREAM_ERROR$1;
+  }
+  if (state.window !== null && state.wbits !== windowBits) {
+    state.window = null;
+  }
+  state.wrap = wrap;
+  state.wbits = windowBits;
+  return inflateReset(strm);
+};
+var inflateInit2 = (strm, windowBits) => {
+  if (!strm) {
+    return Z_STREAM_ERROR$1;
+  }
+  const state = new InflateState();
+  strm.state = state;
+  state.window = null;
+  const ret = inflateReset2(strm, windowBits);
+  if (ret !== Z_OK$1) {
+    strm.state = null;
+  }
+  return ret;
+};
+var inflateInit = (strm) => {
+  return inflateInit2(strm, DEF_WBITS);
+};
+var virgin = true;
+var lenfix;
+var distfix;
+var fixedtables = (state) => {
+  if (virgin) {
+    lenfix = new Int32Array(512);
+    distfix = new Int32Array(32);
+    let sym = 0;
+    while (sym < 144) {
+      state.lens[sym++] = 8;
+    }
+    while (sym < 256) {
+      state.lens[sym++] = 9;
+    }
+    while (sym < 280) {
+      state.lens[sym++] = 7;
+    }
+    while (sym < 288) {
+      state.lens[sym++] = 8;
+    }
+    inftrees(LENS, state.lens, 0, 288, lenfix, 0, state.work, { bits: 9 });
+    sym = 0;
+    while (sym < 32) {
+      state.lens[sym++] = 5;
+    }
+    inftrees(DISTS, state.lens, 0, 32, distfix, 0, state.work, { bits: 5 });
+    virgin = false;
+  }
+  state.lencode = lenfix;
+  state.lenbits = 9;
+  state.distcode = distfix;
+  state.distbits = 5;
+};
+var updatewindow = (strm, src, end, copy) => {
+  let dist;
+  const state = strm.state;
+  if (state.window === null) {
+    state.wsize = 1 << state.wbits;
+    state.wnext = 0;
+    state.whave = 0;
+    state.window = new Uint8Array(state.wsize);
+  }
+  if (copy >= state.wsize) {
+    state.window.set(src.subarray(end - state.wsize, end), 0);
+    state.wnext = 0;
+    state.whave = state.wsize;
+  } else {
+    dist = state.wsize - state.wnext;
+    if (dist > copy) {
+      dist = copy;
+    }
+    state.window.set(src.subarray(end - copy, end - copy + dist), state.wnext);
+    copy -= dist;
+    if (copy) {
+      state.window.set(src.subarray(end - copy, end), 0);
+      state.wnext = copy;
+      state.whave = state.wsize;
+    } else {
+      state.wnext += dist;
+      if (state.wnext === state.wsize) {
+        state.wnext = 0;
+      }
+      if (state.whave < state.wsize) {
+        state.whave += dist;
+      }
+    }
+  }
+  return 0;
+};
+var inflate$2 = (strm, flush) => {
+  let state;
+  let input, output;
+  let next;
+  let put;
+  let have, left;
+  let hold;
+  let bits;
+  let _in, _out;
+  let copy;
+  let from;
+  let from_source;
+  let here = 0;
+  let here_bits, here_op, here_val;
+  let last_bits, last_op, last_val;
+  let len;
+  let ret;
+  const hbuf = new Uint8Array(4);
+  let opts;
+  let n;
+  const order = new Uint8Array([16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15]);
+  if (!strm || !strm.state || !strm.output || !strm.input && strm.avail_in !== 0) {
+    return Z_STREAM_ERROR$1;
+  }
+  state = strm.state;
+  if (state.mode === TYPE) {
+    state.mode = TYPEDO;
+  }
+  put = strm.next_out;
+  output = strm.output;
+  left = strm.avail_out;
+  next = strm.next_in;
+  input = strm.input;
+  have = strm.avail_in;
+  hold = state.hold;
+  bits = state.bits;
+  _in = have;
+  _out = left;
+  ret = Z_OK$1;
+  inf_leave:
+    for (; ; ) {
+      switch (state.mode) {
+        case HEAD:
+          if (state.wrap === 0) {
+            state.mode = TYPEDO;
+            break;
+          }
+          while (bits < 16) {
+            if (have === 0) {
+              break inf_leave;
+            }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+          }
+          if (state.wrap & 2 && hold === 35615) {
+            state.check = 0;
+            hbuf[0] = hold & 255;
+            hbuf[1] = hold >>> 8 & 255;
+            state.check = crc32_1(state.check, hbuf, 2, 0);
+            hold = 0;
+            bits = 0;
+            state.mode = FLAGS;
+            break;
+          }
+          state.flags = 0;
+          if (state.head) {
+            state.head.done = false;
+          }
+          if (!(state.wrap & 1) || (((hold & 255) << 8) + (hold >> 8)) % 31) {
+            strm.msg = "incorrect header check";
+            state.mode = BAD;
+            break;
+          }
+          if ((hold & 15) !== Z_DEFLATED) {
+            strm.msg = "unknown compression method";
+            state.mode = BAD;
+            break;
+          }
+          hold >>>= 4;
+          bits -= 4;
+          len = (hold & 15) + 8;
+          if (state.wbits === 0) {
+            state.wbits = len;
+          } else if (len > state.wbits) {
+            strm.msg = "invalid window size";
+            state.mode = BAD;
+            break;
+          }
+          state.dmax = 1 << state.wbits;
+          strm.adler = state.check = 1;
+          state.mode = hold & 512 ? DICTID : TYPE;
+          hold = 0;
+          bits = 0;
+          break;
+        case FLAGS:
+          while (bits < 16) {
+            if (have === 0) {
+              break inf_leave;
+            }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+          }
+          state.flags = hold;
+          if ((state.flags & 255) !== Z_DEFLATED) {
+            strm.msg = "unknown compression method";
+            state.mode = BAD;
+            break;
+          }
+          if (state.flags & 57344) {
+            strm.msg = "unknown header flags set";
+            state.mode = BAD;
+            break;
+          }
+          if (state.head) {
+            state.head.text = hold >> 8 & 1;
+          }
+          if (state.flags & 512) {
+            hbuf[0] = hold & 255;
+            hbuf[1] = hold >>> 8 & 255;
+            state.check = crc32_1(state.check, hbuf, 2, 0);
+          }
+          hold = 0;
+          bits = 0;
+          state.mode = TIME;
+        case TIME:
+          while (bits < 32) {
+            if (have === 0) {
+              break inf_leave;
+            }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+          }
+          if (state.head) {
+            state.head.time = hold;
+          }
+          if (state.flags & 512) {
+            hbuf[0] = hold & 255;
+            hbuf[1] = hold >>> 8 & 255;
+            hbuf[2] = hold >>> 16 & 255;
+            hbuf[3] = hold >>> 24 & 255;
+            state.check = crc32_1(state.check, hbuf, 4, 0);
+          }
+          hold = 0;
+          bits = 0;
+          state.mode = OS;
+        case OS:
+          while (bits < 16) {
+            if (have === 0) {
+              break inf_leave;
+            }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+          }
+          if (state.head) {
+            state.head.xflags = hold & 255;
+            state.head.os = hold >> 8;
+          }
+          if (state.flags & 512) {
+            hbuf[0] = hold & 255;
+            hbuf[1] = hold >>> 8 & 255;
+            state.check = crc32_1(state.check, hbuf, 2, 0);
+          }
+          hold = 0;
+          bits = 0;
+          state.mode = EXLEN;
+        case EXLEN:
+          if (state.flags & 1024) {
+            while (bits < 16) {
+              if (have === 0) {
+                break inf_leave;
+              }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            state.length = hold;
+            if (state.head) {
+              state.head.extra_len = hold;
+            }
+            if (state.flags & 512) {
+              hbuf[0] = hold & 255;
+              hbuf[1] = hold >>> 8 & 255;
+              state.check = crc32_1(state.check, hbuf, 2, 0);
+            }
+            hold = 0;
+            bits = 0;
+          } else if (state.head) {
+            state.head.extra = null;
+          }
+          state.mode = EXTRA;
+        case EXTRA:
+          if (state.flags & 1024) {
+            copy = state.length;
+            if (copy > have) {
+              copy = have;
+            }
+            if (copy) {
+              if (state.head) {
+                len = state.head.extra_len - state.length;
+                if (!state.head.extra) {
+                  state.head.extra = new Uint8Array(state.head.extra_len);
+                }
+                state.head.extra.set(input.subarray(next, next + copy), len);
+              }
+              if (state.flags & 512) {
+                state.check = crc32_1(state.check, input, copy, next);
+              }
+              have -= copy;
+              next += copy;
+              state.length -= copy;
+            }
+            if (state.length) {
+              break inf_leave;
+            }
+          }
+          state.length = 0;
+          state.mode = NAME;
+        case NAME:
+          if (state.flags & 2048) {
+            if (have === 0) {
+              break inf_leave;
+            }
+            copy = 0;
+            do {
+              len = input[next + copy++];
+              if (state.head && len && state.length < 65536) {
+                state.head.name += String.fromCharCode(len);
+              }
+            } while (len && copy < have);
+            if (state.flags & 512) {
+              state.check = crc32_1(state.check, input, copy, next);
+            }
+            have -= copy;
+            next += copy;
+            if (len) {
+              break inf_leave;
+            }
+          } else if (state.head) {
+            state.head.name = null;
+          }
+          state.length = 0;
+          state.mode = COMMENT;
+        case COMMENT:
+          if (state.flags & 4096) {
+            if (have === 0) {
+              break inf_leave;
+            }
+            copy = 0;
+            do {
+              len = input[next + copy++];
+              if (state.head && len && state.length < 65536) {
+                state.head.comment += String.fromCharCode(len);
+              }
+            } while (len && copy < have);
+            if (state.flags & 512) {
+              state.check = crc32_1(state.check, input, copy, next);
+            }
+            have -= copy;
+            next += copy;
+            if (len) {
+              break inf_leave;
+            }
+          } else if (state.head) {
+            state.head.comment = null;
+          }
+          state.mode = HCRC;
+        case HCRC:
+          if (state.flags & 512) {
+            while (bits < 16) {
+              if (have === 0) {
+                break inf_leave;
+              }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            if (hold !== (state.check & 65535)) {
+              strm.msg = "header crc mismatch";
+              state.mode = BAD;
+              break;
+            }
+            hold = 0;
+            bits = 0;
+          }
+          if (state.head) {
+            state.head.hcrc = state.flags >> 9 & 1;
+            state.head.done = true;
+          }
+          strm.adler = state.check = 0;
+          state.mode = TYPE;
+          break;
+        case DICTID:
+          while (bits < 32) {
+            if (have === 0) {
+              break inf_leave;
+            }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+          }
+          strm.adler = state.check = zswap32(hold);
+          hold = 0;
+          bits = 0;
+          state.mode = DICT;
+        case DICT:
+          if (state.havedict === 0) {
+            strm.next_out = put;
+            strm.avail_out = left;
+            strm.next_in = next;
+            strm.avail_in = have;
+            state.hold = hold;
+            state.bits = bits;
+            return Z_NEED_DICT$1;
+          }
+          strm.adler = state.check = 1;
+          state.mode = TYPE;
+        case TYPE:
+          if (flush === Z_BLOCK || flush === Z_TREES) {
+            break inf_leave;
+          }
+        case TYPEDO:
+          if (state.last) {
+            hold >>>= bits & 7;
+            bits -= bits & 7;
+            state.mode = CHECK;
+            break;
+          }
+          while (bits < 3) {
+            if (have === 0) {
+              break inf_leave;
+            }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+          }
+          state.last = hold & 1;
+          hold >>>= 1;
+          bits -= 1;
+          switch (hold & 3) {
+            case 0:
+              state.mode = STORED;
+              break;
+            case 1:
+              fixedtables(state);
+              state.mode = LEN_;
+              if (flush === Z_TREES) {
+                hold >>>= 2;
+                bits -= 2;
+                break inf_leave;
+              }
+              break;
+            case 2:
+              state.mode = TABLE;
+              break;
+            case 3:
+              strm.msg = "invalid block type";
+              state.mode = BAD;
+          }
+          hold >>>= 2;
+          bits -= 2;
+          break;
+        case STORED:
+          hold >>>= bits & 7;
+          bits -= bits & 7;
+          while (bits < 32) {
+            if (have === 0) {
+              break inf_leave;
+            }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+          }
+          if ((hold & 65535) !== (hold >>> 16 ^ 65535)) {
+            strm.msg = "invalid stored block lengths";
+            state.mode = BAD;
+            break;
+          }
+          state.length = hold & 65535;
+          hold = 0;
+          bits = 0;
+          state.mode = COPY_;
+          if (flush === Z_TREES) {
+            break inf_leave;
+          }
+        case COPY_:
+          state.mode = COPY;
+        case COPY:
+          copy = state.length;
+          if (copy) {
+            if (copy > have) {
+              copy = have;
+            }
+            if (copy > left) {
+              copy = left;
+            }
+            if (copy === 0) {
+              break inf_leave;
+            }
+            output.set(input.subarray(next, next + copy), put);
+            have -= copy;
+            next += copy;
+            left -= copy;
+            put += copy;
+            state.length -= copy;
+            break;
+          }
+          state.mode = TYPE;
+          break;
+        case TABLE:
+          while (bits < 14) {
+            if (have === 0) {
+              break inf_leave;
+            }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+          }
+          state.nlen = (hold & 31) + 257;
+          hold >>>= 5;
+          bits -= 5;
+          state.ndist = (hold & 31) + 1;
+          hold >>>= 5;
+          bits -= 5;
+          state.ncode = (hold & 15) + 4;
+          hold >>>= 4;
+          bits -= 4;
+          if (state.nlen > 286 || state.ndist > 30) {
+            strm.msg = "too many length or distance symbols";
+            state.mode = BAD;
+            break;
+          }
+          state.have = 0;
+          state.mode = LENLENS;
+        case LENLENS:
+          while (state.have < state.ncode) {
+            while (bits < 3) {
+              if (have === 0) {
+                break inf_leave;
+              }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            state.lens[order[state.have++]] = hold & 7;
+            hold >>>= 3;
+            bits -= 3;
+          }
+          while (state.have < 19) {
+            state.lens[order[state.have++]] = 0;
+          }
+          state.lencode = state.lendyn;
+          state.lenbits = 7;
+          opts = { bits: state.lenbits };
+          ret = inftrees(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts);
+          state.lenbits = opts.bits;
+          if (ret) {
+            strm.msg = "invalid code lengths set";
+            state.mode = BAD;
+            break;
+          }
+          state.have = 0;
+          state.mode = CODELENS;
+        case CODELENS:
+          while (state.have < state.nlen + state.ndist) {
+            for (; ; ) {
+              here = state.lencode[hold & (1 << state.lenbits) - 1];
+              here_bits = here >>> 24;
+              here_op = here >>> 16 & 255;
+              here_val = here & 65535;
+              if (here_bits <= bits) {
+                break;
+              }
+              if (have === 0) {
+                break inf_leave;
+              }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            if (here_val < 16) {
+              hold >>>= here_bits;
+              bits -= here_bits;
+              state.lens[state.have++] = here_val;
+            } else {
+              if (here_val === 16) {
+                n = here_bits + 2;
+                while (bits < n) {
+                  if (have === 0) {
+                    break inf_leave;
+                  }
+                  have--;
+                  hold += input[next++] << bits;
+                  bits += 8;
+                }
+                hold >>>= here_bits;
+                bits -= here_bits;
+                if (state.have === 0) {
+                  strm.msg = "invalid bit length repeat";
+                  state.mode = BAD;
+                  break;
+                }
+                len = state.lens[state.have - 1];
+                copy = 3 + (hold & 3);
+                hold >>>= 2;
+                bits -= 2;
+              } else if (here_val === 17) {
+                n = here_bits + 3;
+                while (bits < n) {
+                  if (have === 0) {
+                    break inf_leave;
+                  }
+                  have--;
+                  hold += input[next++] << bits;
+                  bits += 8;
+                }
+                hold >>>= here_bits;
+                bits -= here_bits;
+                len = 0;
+                copy = 3 + (hold & 7);
+                hold >>>= 3;
+                bits -= 3;
+              } else {
+                n = here_bits + 7;
+                while (bits < n) {
+                  if (have === 0) {
+                    break inf_leave;
+                  }
+                  have--;
+                  hold += input[next++] << bits;
+                  bits += 8;
+                }
+                hold >>>= here_bits;
+                bits -= here_bits;
+                len = 0;
+                copy = 11 + (hold & 127);
+                hold >>>= 7;
+                bits -= 7;
+              }
+              if (state.have + copy > state.nlen + state.ndist) {
+                strm.msg = "invalid bit length repeat";
+                state.mode = BAD;
+                break;
+              }
+              while (copy--) {
+                state.lens[state.have++] = len;
+              }
+            }
+          }
+          if (state.mode === BAD) {
+            break;
+          }
+          if (state.lens[256] === 0) {
+            strm.msg = "invalid code -- missing end-of-block";
+            state.mode = BAD;
+            break;
+          }
+          state.lenbits = 9;
+          opts = { bits: state.lenbits };
+          ret = inftrees(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts);
+          state.lenbits = opts.bits;
+          if (ret) {
+            strm.msg = "invalid literal/lengths set";
+            state.mode = BAD;
+            break;
+          }
+          state.distbits = 6;
+          state.distcode = state.distdyn;
+          opts = { bits: state.distbits };
+          ret = inftrees(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts);
+          state.distbits = opts.bits;
+          if (ret) {
+            strm.msg = "invalid distances set";
+            state.mode = BAD;
+            break;
+          }
+          state.mode = LEN_;
+          if (flush === Z_TREES) {
+            break inf_leave;
+          }
+        case LEN_:
+          state.mode = LEN;
+        case LEN:
+          if (have >= 6 && left >= 258) {
+            strm.next_out = put;
+            strm.avail_out = left;
+            strm.next_in = next;
+            strm.avail_in = have;
+            state.hold = hold;
+            state.bits = bits;
+            inffast(strm, _out);
+            put = strm.next_out;
+            output = strm.output;
+            left = strm.avail_out;
+            next = strm.next_in;
+            input = strm.input;
+            have = strm.avail_in;
+            hold = state.hold;
+            bits = state.bits;
+            if (state.mode === TYPE) {
+              state.back = -1;
+            }
+            break;
+          }
+          state.back = 0;
+          for (; ; ) {
+            here = state.lencode[hold & (1 << state.lenbits) - 1];
+            here_bits = here >>> 24;
+            here_op = here >>> 16 & 255;
+            here_val = here & 65535;
+            if (here_bits <= bits) {
+              break;
+            }
+            if (have === 0) {
+              break inf_leave;
+            }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+          }
+          if (here_op && (here_op & 240) === 0) {
+            last_bits = here_bits;
+            last_op = here_op;
+            last_val = here_val;
+            for (; ; ) {
+              here = state.lencode[last_val + ((hold & (1 << last_bits + last_op) - 1) >> last_bits)];
+              here_bits = here >>> 24;
+              here_op = here >>> 16 & 255;
+              here_val = here & 65535;
+              if (last_bits + here_bits <= bits) {
+                break;
+              }
+              if (have === 0) {
+                break inf_leave;
+              }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            hold >>>= last_bits;
+            bits -= last_bits;
+            state.back += last_bits;
+          }
+          hold >>>= here_bits;
+          bits -= here_bits;
+          state.back += here_bits;
+          state.length = here_val;
+          if (here_op === 0) {
+            state.mode = LIT;
+            break;
+          }
+          if (here_op & 32) {
+            state.back = -1;
+            state.mode = TYPE;
+            break;
+          }
+          if (here_op & 64) {
+            strm.msg = "invalid literal/length code";
+            state.mode = BAD;
+            break;
+          }
+          state.extra = here_op & 15;
+          state.mode = LENEXT;
+        case LENEXT:
+          if (state.extra) {
+            n = state.extra;
+            while (bits < n) {
+              if (have === 0) {
+                break inf_leave;
+              }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            state.length += hold & (1 << state.extra) - 1;
+            hold >>>= state.extra;
+            bits -= state.extra;
+            state.back += state.extra;
+          }
+          state.was = state.length;
+          state.mode = DIST;
+        case DIST:
+          for (; ; ) {
+            here = state.distcode[hold & (1 << state.distbits) - 1];
+            here_bits = here >>> 24;
+            here_op = here >>> 16 & 255;
+            here_val = here & 65535;
+            if (here_bits <= bits) {
+              break;
+            }
+            if (have === 0) {
+              break inf_leave;
+            }
+            have--;
+            hold += input[next++] << bits;
+            bits += 8;
+          }
+          if ((here_op & 240) === 0) {
+            last_bits = here_bits;
+            last_op = here_op;
+            last_val = here_val;
+            for (; ; ) {
+              here = state.distcode[last_val + ((hold & (1 << last_bits + last_op) - 1) >> last_bits)];
+              here_bits = here >>> 24;
+              here_op = here >>> 16 & 255;
+              here_val = here & 65535;
+              if (last_bits + here_bits <= bits) {
+                break;
+              }
+              if (have === 0) {
+                break inf_leave;
+              }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            hold >>>= last_bits;
+            bits -= last_bits;
+            state.back += last_bits;
+          }
+          hold >>>= here_bits;
+          bits -= here_bits;
+          state.back += here_bits;
+          if (here_op & 64) {
+            strm.msg = "invalid distance code";
+            state.mode = BAD;
+            break;
+          }
+          state.offset = here_val;
+          state.extra = here_op & 15;
+          state.mode = DISTEXT;
+        case DISTEXT:
+          if (state.extra) {
+            n = state.extra;
+            while (bits < n) {
+              if (have === 0) {
+                break inf_leave;
+              }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            state.offset += hold & (1 << state.extra) - 1;
+            hold >>>= state.extra;
+            bits -= state.extra;
+            state.back += state.extra;
+          }
+          if (state.offset > state.dmax) {
+            strm.msg = "invalid distance too far back";
+            state.mode = BAD;
+            break;
+          }
+          state.mode = MATCH;
+        case MATCH:
+          if (left === 0) {
+            break inf_leave;
+          }
+          copy = _out - left;
+          if (state.offset > copy) {
+            copy = state.offset - copy;
+            if (copy > state.whave) {
+              if (state.sane) {
+                strm.msg = "invalid distance too far back";
+                state.mode = BAD;
+                break;
+              }
+            }
+            if (copy > state.wnext) {
+              copy -= state.wnext;
+              from = state.wsize - copy;
+            } else {
+              from = state.wnext - copy;
+            }
+            if (copy > state.length) {
+              copy = state.length;
+            }
+            from_source = state.window;
+          } else {
+            from_source = output;
+            from = put - state.offset;
+            copy = state.length;
+          }
+          if (copy > left) {
+            copy = left;
+          }
+          left -= copy;
+          state.length -= copy;
+          do {
+            output[put++] = from_source[from++];
+          } while (--copy);
+          if (state.length === 0) {
+            state.mode = LEN;
+          }
+          break;
+        case LIT:
+          if (left === 0) {
+            break inf_leave;
+          }
+          output[put++] = state.length;
+          left--;
+          state.mode = LEN;
+          break;
+        case CHECK:
+          if (state.wrap) {
+            while (bits < 32) {
+              if (have === 0) {
+                break inf_leave;
+              }
+              have--;
+              hold |= input[next++] << bits;
+              bits += 8;
+            }
+            _out -= left;
+            strm.total_out += _out;
+            state.total += _out;
+            if (_out) {
+              strm.adler = state.check = state.flags ? crc32_1(state.check, output, _out, put - _out) : adler32_1(state.check, output, _out, put - _out);
+            }
+            _out = left;
+            if ((state.flags ? hold : zswap32(hold)) !== state.check) {
+              strm.msg = "incorrect data check";
+              state.mode = BAD;
+              break;
+            }
+            hold = 0;
+            bits = 0;
+          }
+          state.mode = LENGTH;
+        case LENGTH:
+          if (state.wrap && state.flags) {
+            while (bits < 32) {
+              if (have === 0) {
+                break inf_leave;
+              }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            if (hold !== (state.total & 4294967295)) {
+              strm.msg = "incorrect length check";
+              state.mode = BAD;
+              break;
+            }
+            hold = 0;
+            bits = 0;
+          }
+          state.mode = DONE;
+        case DONE:
+          ret = Z_STREAM_END$1;
+          break inf_leave;
+        case BAD:
+          ret = Z_DATA_ERROR$1;
+          break inf_leave;
+        case MEM:
+          return Z_MEM_ERROR$1;
+        case SYNC:
+        default:
+          return Z_STREAM_ERROR$1;
+      }
+    }
+  strm.next_out = put;
+  strm.avail_out = left;
+  strm.next_in = next;
+  strm.avail_in = have;
+  state.hold = hold;
+  state.bits = bits;
+  if (state.wsize || _out !== strm.avail_out && state.mode < BAD && (state.mode < CHECK || flush !== Z_FINISH$1)) {
+    if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out))
+      ;
+  }
+  _in -= strm.avail_in;
+  _out -= strm.avail_out;
+  strm.total_in += _in;
+  strm.total_out += _out;
+  state.total += _out;
+  if (state.wrap && _out) {
+    strm.adler = state.check = state.flags ? crc32_1(state.check, output, _out, strm.next_out - _out) : adler32_1(state.check, output, _out, strm.next_out - _out);
+  }
+  strm.data_type = state.bits + (state.last ? 64 : 0) + (state.mode === TYPE ? 128 : 0) + (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0);
+  if ((_in === 0 && _out === 0 || flush === Z_FINISH$1) && ret === Z_OK$1) {
+    ret = Z_BUF_ERROR;
+  }
+  return ret;
+};
+var inflateEnd = (strm) => {
+  if (!strm || !strm.state) {
+    return Z_STREAM_ERROR$1;
+  }
+  let state = strm.state;
+  if (state.window) {
+    state.window = null;
+  }
+  strm.state = null;
+  return Z_OK$1;
+};
+var inflateGetHeader = (strm, head) => {
+  if (!strm || !strm.state) {
+    return Z_STREAM_ERROR$1;
+  }
+  const state = strm.state;
+  if ((state.wrap & 2) === 0) {
+    return Z_STREAM_ERROR$1;
+  }
+  state.head = head;
+  head.done = false;
+  return Z_OK$1;
+};
+var inflateSetDictionary = (strm, dictionary) => {
+  const dictLength = dictionary.length;
+  let state;
+  let dictid;
+  let ret;
+  if (!strm || !strm.state) {
+    return Z_STREAM_ERROR$1;
+  }
+  state = strm.state;
+  if (state.wrap !== 0 && state.mode !== DICT) {
+    return Z_STREAM_ERROR$1;
+  }
+  if (state.mode === DICT) {
+    dictid = 1;
+    dictid = adler32_1(dictid, dictionary, dictLength, 0);
+    if (dictid !== state.check) {
+      return Z_DATA_ERROR$1;
+    }
+  }
+  ret = updatewindow(strm, dictionary, dictLength, dictLength);
+  if (ret) {
+    state.mode = MEM;
+    return Z_MEM_ERROR$1;
+  }
+  state.havedict = 1;
+  return Z_OK$1;
+};
+var inflateReset_1 = inflateReset;
+var inflateReset2_1 = inflateReset2;
+var inflateResetKeep_1 = inflateResetKeep;
+var inflateInit_1 = inflateInit;
+var inflateInit2_1 = inflateInit2;
+var inflate_2$1 = inflate$2;
+var inflateEnd_1 = inflateEnd;
+var inflateGetHeader_1 = inflateGetHeader;
+var inflateSetDictionary_1 = inflateSetDictionary;
+var inflateInfo = "pako inflate (from Nodeca project)";
+var inflate_1$2 = {
+  inflateReset: inflateReset_1,
+  inflateReset2: inflateReset2_1,
+  inflateResetKeep: inflateResetKeep_1,
+  inflateInit: inflateInit_1,
+  inflateInit2: inflateInit2_1,
+  inflate: inflate_2$1,
+  inflateEnd: inflateEnd_1,
+  inflateGetHeader: inflateGetHeader_1,
+  inflateSetDictionary: inflateSetDictionary_1,
+  inflateInfo
+};
+function GZheader() {
+  this.text = 0;
+  this.time = 0;
+  this.xflags = 0;
+  this.os = 0;
+  this.extra = null;
+  this.extra_len = 0;
+  this.name = "";
+  this.comment = "";
+  this.hcrc = 0;
+  this.done = false;
+}
+var gzheader = GZheader;
+var toString = Object.prototype.toString;
+var {
+  Z_NO_FLUSH,
+  Z_FINISH,
+  Z_OK,
+  Z_STREAM_END,
+  Z_NEED_DICT,
+  Z_STREAM_ERROR,
+  Z_DATA_ERROR,
+  Z_MEM_ERROR
+} = constants$2;
+function Inflate$1(options) {
+  this.options = common.assign({
+    chunkSize: 1024 * 64,
+    windowBits: 15,
+    to: ""
+  }, options || {});
+  const opt = this.options;
+  if (opt.raw && opt.windowBits >= 0 && opt.windowBits < 16) {
+    opt.windowBits = -opt.windowBits;
+    if (opt.windowBits === 0) {
+      opt.windowBits = -15;
+    }
+  }
+  if (opt.windowBits >= 0 && opt.windowBits < 16 && !(options && options.windowBits)) {
+    opt.windowBits += 32;
+  }
+  if (opt.windowBits > 15 && opt.windowBits < 48) {
+    if ((opt.windowBits & 15) === 0) {
+      opt.windowBits |= 15;
+    }
+  }
+  this.err = 0;
+  this.msg = "";
+  this.ended = false;
+  this.chunks = [];
+  this.strm = new zstream();
+  this.strm.avail_out = 0;
+  let status = inflate_1$2.inflateInit2(this.strm, opt.windowBits);
+  if (status !== Z_OK) {
+    throw new Error(messages[status]);
+  }
+  this.header = new gzheader();
+  inflate_1$2.inflateGetHeader(this.strm, this.header);
+  if (opt.dictionary) {
+    if (typeof opt.dictionary === "string") {
+      opt.dictionary = strings.string2buf(opt.dictionary);
+    } else if (toString.call(opt.dictionary) === "[object ArrayBuffer]") {
+      opt.dictionary = new Uint8Array(opt.dictionary);
+    }
+    if (opt.raw) {
+      status = inflate_1$2.inflateSetDictionary(this.strm, opt.dictionary);
+      if (status !== Z_OK) {
+        throw new Error(messages[status]);
+      }
+    }
+  }
+}
+Inflate$1.prototype.push = function(data, flush_mode) {
+  const strm = this.strm;
+  const chunkSize = this.options.chunkSize;
+  const dictionary = this.options.dictionary;
+  let status, _flush_mode, last_avail_out;
+  if (this.ended)
+    return false;
+  if (flush_mode === ~~flush_mode)
+    _flush_mode = flush_mode;
+  else
+    _flush_mode = flush_mode === true ? Z_FINISH : Z_NO_FLUSH;
+  if (toString.call(data) === "[object ArrayBuffer]") {
+    strm.input = new Uint8Array(data);
+  } else {
+    strm.input = data;
+  }
+  strm.next_in = 0;
+  strm.avail_in = strm.input.length;
+  for (; ; ) {
+    if (strm.avail_out === 0) {
+      strm.output = new Uint8Array(chunkSize);
+      strm.next_out = 0;
+      strm.avail_out = chunkSize;
+    }
+    status = inflate_1$2.inflate(strm, _flush_mode);
+    if (status === Z_NEED_DICT && dictionary) {
+      status = inflate_1$2.inflateSetDictionary(strm, dictionary);
+      if (status === Z_OK) {
+        status = inflate_1$2.inflate(strm, _flush_mode);
+      } else if (status === Z_DATA_ERROR) {
+        status = Z_NEED_DICT;
+      }
+    }
+    while (strm.avail_in > 0 && status === Z_STREAM_END && strm.state.wrap > 0 && data[strm.next_in] !== 0) {
+      inflate_1$2.inflateReset(strm);
+      status = inflate_1$2.inflate(strm, _flush_mode);
+    }
+    switch (status) {
+      case Z_STREAM_ERROR:
+      case Z_DATA_ERROR:
+      case Z_NEED_DICT:
+      case Z_MEM_ERROR:
+        this.onEnd(status);
+        this.ended = true;
+        return false;
+    }
+    last_avail_out = strm.avail_out;
+    if (strm.next_out) {
+      if (strm.avail_out === 0 || status === Z_STREAM_END) {
+        if (this.options.to === "string") {
+          let next_out_utf8 = strings.utf8border(strm.output, strm.next_out);
+          let tail = strm.next_out - next_out_utf8;
+          let utf8str = strings.buf2string(strm.output, next_out_utf8);
+          strm.next_out = tail;
+          strm.avail_out = chunkSize - tail;
+          if (tail)
+            strm.output.set(strm.output.subarray(next_out_utf8, next_out_utf8 + tail), 0);
+          this.onData(utf8str);
+        } else {
+          this.onData(strm.output.length === strm.next_out ? strm.output : strm.output.subarray(0, strm.next_out));
+        }
+      }
+    }
+    if (status === Z_OK && last_avail_out === 0)
+      continue;
+    if (status === Z_STREAM_END) {
+      status = inflate_1$2.inflateEnd(this.strm);
+      this.onEnd(status);
+      this.ended = true;
+      return true;
+    }
+    if (strm.avail_in === 0)
+      break;
+  }
+  return true;
+};
+Inflate$1.prototype.onData = function(chunk) {
+  this.chunks.push(chunk);
+};
+Inflate$1.prototype.onEnd = function(status) {
+  if (status === Z_OK) {
+    if (this.options.to === "string") {
+      this.result = this.chunks.join("");
+    } else {
+      this.result = common.flattenChunks(this.chunks);
+    }
+  }
+  this.chunks = [];
+  this.err = status;
+  this.msg = this.strm.msg;
+};
+function inflate$1(input, options) {
+  const inflator = new Inflate$1(options);
+  inflator.push(input);
+  if (inflator.err)
+    throw inflator.msg || messages[inflator.err];
+  return inflator.result;
+}
+function inflateRaw$1(input, options) {
+  options = options || {};
+  options.raw = true;
+  return inflate$1(input, options);
+}
+var Inflate_1$1 = Inflate$1;
+var inflate_2 = inflate$1;
+var inflateRaw_1$1 = inflateRaw$1;
+var ungzip$1 = inflate$1;
+var constants = constants$2;
+var inflate_1$1 = {
+  Inflate: Inflate_1$1,
+  inflate: inflate_2,
+  inflateRaw: inflateRaw_1$1,
+  ungzip: ungzip$1,
+  constants
+};
+var { Inflate, inflate, inflateRaw, ungzip } = inflate_1$1;
+var inflate_1 = inflate;
+var ungzip_1 = ungzip;
+
+// esm/filters.js
+var zlib_decompress = function(buf, itemsize) {
+  let input_array = new Uint8Array(buf);
+  return inflate_1(input_array).buffer;
+};
+var unshuffle = function(buf, itemsize) {
+  let buffer_size = buf.byteLength;
+  let unshuffled_view = new Uint8Array(buffer_size);
+  let step = Math.floor(buffer_size / itemsize);
+  let shuffled_view = new DataView(buf);
+  for (var j = 0; j < itemsize; j++) {
+    for (var i = 0; i < step; i++) {
+      unshuffled_view[j + i * itemsize] = shuffled_view.getUint8(j * step + i);
+    }
+  }
+  return unshuffled_view.buffer;
+};
+var fletch32 = function(buf, itemsize) {
+  _verify_fletcher32(buf);
+  return buf.slice(0, -4);
+};
+function _verify_fletcher32(chunk_buffer) {
+  var odd_chunk_buffer = chunk_buffer.byteLength % 2 != 0;
+  var data_length = chunk_buffer.byteLength - 4;
+  var view = new DataView(chunk_buffer);
+  var sum1 = 0;
+  var sum2 = 0;
+  for (var offset = 0; offset < data_length - 1; offset += 2) {
+    let datum = view.getUint16(offset, true);
+    sum1 = (sum1 + datum) % 65535;
+    sum2 = (sum2 + sum1) % 65535;
+  }
+  if (odd_chunk_buffer) {
+    let datum = view.getUint8(data_length - 1);
+    sum1 = (sum1 + datum) % 65535;
+    sum2 = (sum2 + sum1) % 65535;
+  }
+  var [ref_sum1, ref_sum2] = struct.unpack_from(">HH", chunk_buffer, data_length);
+  ref_sum1 = ref_sum1 % 65535;
+  ref_sum2 = ref_sum2 % 65535;
+  if (sum1 != ref_sum1 || sum2 != ref_sum2) {
+    throw 'ValueError("fletcher32 checksum invalid")';
+  }
+  return true;
+}
+var GZIP_DEFLATE_FILTER = 1;
+var SHUFFLE_FILTER = 2;
+var FLETCH32_FILTER = 3;
+var Filters = /* @__PURE__ */ new Map([
+  [GZIP_DEFLATE_FILTER, zlib_decompress],
+  [SHUFFLE_FILTER, unshuffle],
+  [FLETCH32_FILTER, fletch32]
+]);
+
+// esm/btree.js
+var AbstractBTree = class {
+  constructor(fh, offset) {
+    this.fh = fh;
+    this.offset = offset;
+    this.depth = null;
+  }
+  async init() {
+    this.all_nodes = /* @__PURE__ */ new Map();
+    await this._read_root_node();
+    await this._read_children();
+  }
+  async _read_children() {
+    let node_level = this.depth;
+    while (node_level > 0) {
+      for (var parent_node of this.all_nodes.get(node_level)) {
+        for (var child_addr of parent_node.get("addresses")) {
+          this._add_node(await this._read_node(child_addr, node_level - 1));
+        }
+      }
+      node_level--;
+    }
+  }
+  async _read_root_node() {
+    let root_node = await this._read_node(this.offset, null);
+    this._add_node(root_node);
+    this.depth = root_node.get("node_level");
+  }
+  _add_node(node) {
+    let node_level = node.get("node_level");
+    if (this.all_nodes.has(node_level)) {
+      this.all_nodes.get(node_level).push(node);
+    } else {
+      this.all_nodes.set(node_level, [node]);
+    }
+  }
+  async _read_node(offset, node_level) {
+    let node = await this._read_node_header(offset, node_level);
+    node.set("keys", []);
+    node.set("addresses", []);
+    return node;
+  }
+  async _read_node_header(offset) {
+    throw "NotImplementedError: must define _read_node_header in implementation class";
+  }
+};
+var BTreeV1 = class extends AbstractBTree {
+  B_LINK_NODE = /* @__PURE__ */ new Map([
+    ["signature", "4s"],
+    ["node_type", "B"],
+    ["node_level", "B"],
+    ["entries_used", "H"],
+    ["left_sibling", "Q"],
+    ["right_sibling", "Q"]
+  ]);
+  async _read_node_header(offset, node_level) {
+    let node = await _unpack_struct_from_async(this.B_LINK_NODE, this.fh, offset);
+    if (node_level != null) {
+      if (node.get("node_level") != node_level) {
+        throw "node level does not match";
+      }
+    }
+    return node;
+  }
+};
+var BTreeV1Groups = class extends BTreeV1 {
+  NODE_TYPE = 0;
+  constructor(fh, offset) {
+    super(fh, offset);
+    this.ready = this.init();
+  }
+  async _read_node(offset, node_level) {
+    let node = await this._read_node_header(offset, node_level);
+    offset += _structure_size(this.B_LINK_NODE);
+    let keys = [];
+    let addresses = [];
+    let entries_used = node.get("entries_used");
+    for (var i = 0; i < entries_used; i++) {
+      let key = (await struct.unpack_from_async("<Q", this.fh, offset))[0];
+      offset += 8;
+      let address = (await struct.unpack_from_async("<Q", this.fh, offset))[0];
+      offset += 8;
+      keys.push(key);
+      addresses.push(address);
+    }
+    keys.push((await struct.unpack_from_async("<Q", this.fh, offset))[0]);
+    node.set("keys", keys);
+    node.set("addresses", addresses);
+    return node;
+  }
+  symbol_table_addresses() {
+    var all_address = [];
+    var root_nodes = this.all_nodes.get(0);
+    for (var node of root_nodes) {
+      all_address = all_address.concat(node.get("addresses"));
+    }
+    return all_address;
+  }
+};
+var BTreeV1RawDataChunks = class extends BTreeV1 {
+  NODE_TYPE = 1;
+  constructor(fh, offset, dims) {
+    super(fh, offset);
+    this.dims = dims;
+    this.ready = this.init();
+  }
+  async _read_node(offset, node_level) {
+    let node = await this._read_node_header(offset, node_level);
+    offset += _structure_size(this.B_LINK_NODE);
+    var keys = [];
+    var addresses = [];
+    let entries_used = node.get("entries_used");
+    for (var i = 0; i < entries_used; i++) {
+      let [chunk_size, filter_mask] = await struct.unpack_from_async("<II", this.fh, offset);
+      offset += 8;
+      let fmt = "<" + this.dims.toFixed() + "Q";
+      let fmt_size = struct.calcsize(fmt);
+      let chunk_offset = await struct.unpack_from_async(fmt, this.fh, offset);
+      offset += fmt_size;
+      let chunk_address = (await struct.unpack_from_async("<Q", this.fh, offset))[0];
+      offset += 8;
+      keys.push(/* @__PURE__ */ new Map([
+        ["chunk_size", chunk_size],
+        ["filter_mask", filter_mask],
+        ["chunk_offset", chunk_offset]
+      ]));
+      addresses.push(chunk_address);
+    }
+    node.set("keys", keys);
+    node.set("addresses", addresses);
+    return node;
+  }
+  async construct_data_from_chunks(chunk_shape, data_shape, dtype, filter_pipeline) {
+    var item_getter, item_big_endian, item_size;
+    if (dtype instanceof Array) {
+      let dtype_class = dtype[0];
+      if (dtype_class == "REFERENCE") {
+        let size = dtype[1];
+        if (size != 8) {
+          throw "NotImplementedError('Unsupported Reference type')";
+        }
+        var dtype = "<u8";
+        item_getter = "getUint64";
+        item_big_endian = false;
+        item_size = 8;
+      } else if (dtype_class == "VLEN_STRING" || dtype_class == "VLEN_SEQUENCE") {
+        item_getter = "getVLENStruct";
+        item_big_endian = false;
+        item_size = 16;
+      } else {
+        throw "NotImplementedError('datatype not implemented')";
+      }
+    } else {
+      [item_getter, item_big_endian, item_size] = dtype_getter(dtype);
+    }
+    var data_size = data_shape.reduce(function(a, b) {
+      return a * b;
+    }, 1);
+    var chunk_size = chunk_shape.reduce(function(a, b) {
+      return a * b;
+    }, 1);
+    let dims = data_shape.length;
+    var current_stride = 1;
+    chunk_shape.slice().map(function(d2) {
+      let s = current_stride;
+      current_stride *= d2;
+      return s;
+    });
+    var current_stride = 1;
+    var data_strides = data_shape.slice().reverse().map(function(d2) {
+      let s = current_stride;
+      current_stride *= d2;
+      return s;
+    }).reverse();
+    var data = new Array(data_size);
+    let chunk_buffer_size = chunk_size * item_size;
+    for (var node of this.all_nodes.get(0)) {
+      let node_keys = node.get("keys");
+      let node_addresses = node.get("addresses");
+      let nkeys = node_keys.length;
+      for (var ik = 0; ik < nkeys; ik++) {
+        let node_key = node_keys[ik];
+        let addr = node_addresses[ik];
+        var chunk_buffer;
+        if (filter_pipeline == null) {
+          chunk_buffer = await this.fh.slice(addr, addr + chunk_buffer_size);
+        } else {
+          chunk_buffer = await this.fh.slice(addr, addr + node_key.get("chunk_size"));
+          let filter_mask = node_key.get("filter_mask");
+          chunk_buffer = this._filter_chunk(chunk_buffer, filter_mask, filter_pipeline, item_size);
+        }
+        var chunk_offset = node_key.get("chunk_offset").slice();
+        var apos = chunk_offset.slice();
+        var cpos = apos.map(function() {
+          return 0;
+        });
+        var cview = new DataView64(chunk_buffer);
+        for (var ci = 0; ci < chunk_size; ci++) {
+          for (var d = dims - 1; d >= 0; d--) {
+            if (cpos[d] >= chunk_shape[d]) {
+              cpos[d] = 0;
+              apos[d] = chunk_offset[d];
+              if (d > 0) {
+                cpos[d - 1] += 1;
+                apos[d - 1] += 1;
+              }
+            } else {
+              break;
+            }
+          }
+          let inbounds = apos.slice(0, -1).every(function(p, d2) {
+            return p < data_shape[d2];
+          });
+          if (inbounds) {
+            let cb_offset = ci * item_size;
+            let datum = cview[item_getter](cb_offset, !item_big_endian, item_size);
+            let ai = apos.slice(0, -1).reduce(function(prev, curr, index) {
+              return curr * data_strides[index] + prev;
+            }, 0);
+            data[ai] = datum;
+          }
+          cpos[dims - 1] += 1;
+          apos[dims - 1] += 1;
+        }
+      }
+    }
+    return data;
+  }
+  _filter_chunk(chunk_buffer, filter_mask, filter_pipeline, itemsize) {
+    let num_filters = filter_pipeline.length;
+    let buf = chunk_buffer.slice();
+    for (var filter_index = num_filters - 1; filter_index >= 0; filter_index--) {
+      if (filter_mask & 1 << filter_index) {
+        continue;
+      }
+      let pipeline_entry = filter_pipeline[filter_index];
+      let filter_id = pipeline_entry.get("filter_id");
+      let client_data = pipeline_entry.get("client_data");
+      if (Filters.has(filter_id)) {
+        buf = Filters.get(filter_id)(buf, itemsize, client_data);
+      } else {
+        throw 'NotImplementedError("Filter with id:' + filter_id.toFixed() + ' not supported")';
+      }
+    }
+    return buf;
+  }
+};
+var BTreeV2 = class extends AbstractBTree {
+  B_TREE_HEADER = /* @__PURE__ */ new Map([
+    ["signature", "4s"],
+    ["version", "B"],
+    ["node_type", "B"],
+    ["node_size", "I"],
+    ["record_size", "H"],
+    ["depth", "H"],
+    ["split_percent", "B"],
+    ["merge_percent", "B"],
+    ["root_address", "Q"],
+    ["root_nrecords", "H"],
+    ["total_nrecords", "Q"]
+  ]);
+  B_LINK_NODE = /* @__PURE__ */ new Map([
+    ["signature", "4s"],
+    ["version", "B"],
+    ["node_type", "B"]
+  ]);
+  constructor(fh, offset) {
+    super(fh, offset);
+    this.ready = this.init();
+  }
+  async _read_root_node() {
+    let h = await this._read_tree_header(this.offset);
+    this.address_formats = this._calculate_address_formats(h);
+    this.header = h;
+    this.depth = h.get("depth");
+    let address = [h.get("root_address"), h.get("root_nrecords"), h.get("total_nrecords")];
+    let root_node = await this._read_node(address, this.depth);
+    this._add_node(root_node);
+  }
+  async _read_tree_header(offset) {
+    let header = await _unpack_struct_from_async(this.B_TREE_HEADER, this.fh, this.offset);
+    return header;
+  }
+  _calculate_address_formats(header) {
+    let node_size = header.get("node_size");
+    let record_size = header.get("record_size");
+    let nrecords_max = 0;
+    let ntotalrecords_max = 0;
+    let address_formats = /* @__PURE__ */ new Map();
+    let max_depth = header.get("depth");
+    for (var node_level = 0; node_level <= max_depth; node_level++) {
+      let offset_fmt = "";
+      let num1_fmt = "";
+      let num2_fmt = "";
+      let offset_size, num1_size, num2_size;
+      if (node_level == 0) {
+        offset_size = 0;
+        num1_size = 0;
+        num2_size = 0;
+      } else if (node_level == 1) {
+        offset_size = 8;
+        offset_fmt = "<Q";
+        num1_size = this._required_bytes(nrecords_max);
+        num1_fmt = this._int_format(num1_size);
+        num2_size = 0;
+      } else {
+        offset_size = 8;
+        offset_fmt = "<Q";
+        num1_size = this._required_bytes(nrecords_max);
+        num1_fmt = this._int_format(num1_size);
+        num2_size = this._required_bytes(ntotalrecords_max);
+        num2_fmt = this._int_format(num2_size);
+      }
+      address_formats.set(node_level, [
+        offset_size,
+        num1_size,
+        num2_size,
+        offset_fmt,
+        num1_fmt,
+        num2_fmt
+      ]);
+      if (node_level < max_depth) {
+        let addr_size = offset_size + num1_size + num2_size;
+        nrecords_max = this._nrecords_max(node_size, record_size, addr_size);
+        if (ntotalrecords_max > 0) {
+          ntotalrecords_max *= nrecords_max;
+        } else {
+          ntotalrecords_max = nrecords_max;
+        }
+      }
+    }
+    return address_formats;
+  }
+  _nrecords_max(node_size, record_size, addr_size) {
+    return Math.floor((node_size - 10 - addr_size) / (record_size + addr_size));
+  }
+  _required_bytes(integer) {
+    return Math.ceil(bitSize(integer) / 8);
+  }
+  _int_format(bytelength) {
+    return ["<B", "<H", "<I", "<Q"][bytelength - 1];
+  }
+  async _read_node(address, node_level) {
+    let [offset, nrecords, ntotalrecords] = address;
+    let node = this._read_node_header(offset, node_level);
+    offset += _structure_size(this.B_LINK_NODE);
+    let record_size = this.header.get("record_size");
+    let keys = [];
+    for (let i = 0; i < nrecords; i++) {
+      let record = await this._parse_record(this.fh, offset, record_size);
+      offset += record_size;
+      keys.push(record);
+    }
+    let addresses = [];
+    let fmts = this.address_formats.get(node_level);
+    if (node_level != 0) {
+      let [offset_size, num1_size, num2_size, offset_fmt, num1_fmt, num2_fmt] = fmts;
+      for (let j = 0; j <= nrecords; j++) {
+        let address_offset = (await struct.unpack_from_async(offset_fmt, this.fh, offset))[0];
+        offset += offset_size;
+        let num1 = (await struct.unpack_from_async(num1_fmt, this.fh, offset))[0];
+        offset += num1_size;
+        let num2 = num1;
+        if (num2_size > 0) {
+          num2 = (await struct.unpack_from_async(num2_fmt, this.fh, offset))[0];
+          offset += num2_size;
+        }
+        addresses.push([address_offset, num1, num2]);
+      }
+    }
+    node.set("keys", keys);
+    node.set("addresses", addresses);
+    return node;
+  }
+  async _read_node_header(offset, node_level) {
+    let node = await _unpack_struct_from_async(this.B_LINK_NODE, this.fh, offset);
+    node.set("node_level", node_level);
+    return node;
+  }
+  *iter_records() {
+    for (let nodelist of this.all_nodes.values()) {
+      for (let node of nodelist) {
+        for (let key of node.get("keys")) {
+          yield key;
+        }
+      }
+    }
+  }
+  _parse_record(record) {
+    throw "NotImplementedError";
+  }
+};
+var BTreeV2GroupNames = class extends BTreeV2 {
+  NODE_TYPE = 5;
+  async _parse_record(buf, offset, size) {
+    let namehash = (await struct.unpack_from_async("<I", buf, offset))[0];
+    offset += 4;
+    const heapid = await buf.slice(offset, offset + 7);
+    return /* @__PURE__ */ new Map([["namehash", namehash], ["heapid", heapid]]);
+  }
+};
+var BTreeV2GroupOrders = class extends BTreeV2 {
+  NODE_TYPE = 6;
+  async _parse_record(buf, offset, size) {
+    let creationorder = (await struct.unpack_from_async("<Q", buf, offset))[0];
+    offset += 8;
+    const heapid = await buf.slice(offset, offset + 7);
+    return /* @__PURE__ */ new Map([["creationorder", creationorder], ["heapid", heapid]]);
+  }
+};
+
+// esm/misc-low-level.js
+var SuperBlock = class {
+  constructor(fh, offset) {
+    this.ready = this.init(fh, offset);
+  }
+  async init(fh, offset) {
+    let version_hint = await struct.unpack_from_async("<B", fh, offset + 8);
+    var contents;
+    if (version_hint == 0) {
+      contents = await _unpack_struct_from_async(SUPERBLOCK_V0, fh, offset);
+      this._end_of_sblock = offset + SUPERBLOCK_V0_SIZE;
+    } else if (version_hint == 2 || version_hint == 3) {
+      contents = await _unpack_struct_from_async(SUPERBLOCK_V2_V3, fh, offset);
+      this._end_of_sblock = offset + SUPERBLOCK_V2_V3_SIZE;
+    } else {
+      throw "unsupported superblock version: " + version_hint.toFixed();
+    }
+    if (contents.get("format_signature") != FORMAT_SIGNATURE) {
+      throw "Incorrect file signature: " + contents.get("format_signature");
+    }
+    if (contents.get("offset_size") != 8 || contents.get("length_size") != 8) {
+      throw "File uses non-64-bit addressing";
+    }
+    this.version = contents.get("superblock_version");
+    this._contents = contents;
+    this._root_symbol_table = null;
+    this._fh = fh;
+  }
+  async get_offset_to_dataobjects() {
+    if (this.version == 0) {
+      var sym_table = new SymbolTable(this._fh, this._end_of_sblock, true);
+      await sym_table.ready;
+      this._root_symbol_table = sym_table;
+      return sym_table.group_offset;
+    } else if (this.version == 2 || this.version == 3) {
+      return this._contents.get("root_group_address");
+    } else {
+      throw "Not implemented version = " + this.version.toFixed();
+    }
+  }
+};
+var Heap = class {
+  constructor(fh, offset) {
+    this.ready = this.init(fh, offset);
+  }
+  async init(fh, offset) {
+    let local_heap = await _unpack_struct_from_async(LOCAL_HEAP, fh, offset);
+    assert(local_heap.get("signature") == "HEAP");
+    assert(local_heap.get("version") == 0);
+    let data_offset = local_heap.get("address_of_data_segment");
+    let heap_data = await fh.slice(data_offset, data_offset + local_heap.get("data_segment_size"));
+    local_heap.set("heap_data", heap_data);
+    this._contents = local_heap;
+    this.data = heap_data;
+  }
+  get_object_name(offset) {
+    let end = new Uint8Array(this.data).indexOf(0, offset);
+    let name_size = end - offset;
+    let name = struct.unpack_from("<" + name_size.toFixed() + "s", this.data, offset)[0];
+    return name;
+  }
+};
+var SymbolTable = class {
+  constructor(fh, offset, root = false) {
+    this.ready = this.init(fh, offset, root);
+  }
+  async init(fh, offset, root) {
+    var node;
+    if (root) {
+      node = /* @__PURE__ */ new Map([["symbols", 1]]);
+    } else {
+      node = await _unpack_struct_from_async(SYMBOL_TABLE_NODE, fh, offset);
+      if (node.get("signature") != "SNOD") {
+        throw "incorrect node type";
+      }
+      offset += SYMBOL_TABLE_NODE_SIZE;
+    }
+    var entries = [];
+    var n_symbols = node.get("symbols");
+    for (var i = 0; i < n_symbols; i++) {
+      entries.push(await _unpack_struct_from_async(SYMBOL_TABLE_ENTRY, fh, offset));
+      offset += SYMBOL_TABLE_ENTRY_SIZE;
+    }
+    if (root) {
+      this.group_offset = entries[0].get("object_header_address");
+    }
+    this.entries = entries;
+    this._contents = node;
+    return this;
+  }
+  assign_name(heap) {
+    this.entries.forEach(function(entry) {
+      let offset = entry.get("link_name_offset");
+      let link_name = heap.get_object_name(offset);
+      entry.set("link_name", link_name);
+    });
+  }
+  get_links(heap) {
+    var links = {};
+    this.entries.forEach(function(e) {
+      let cache_type = e.get("cache_type");
+      let link_name = e.get("link_name");
+      if (cache_type == 0 || cache_type == 1) {
+        links[link_name] = e.get("object_header_address");
+      } else if (cache_type == 2) {
+        let scratch = e.get("scratch");
+        let buf = new ArrayBuffer(4);
+        let bufView = new Uint8Array(buf);
+        for (var i = 0; i < 4; i++) {
+          bufView[i] = scratch.charCodeAt(i);
+        }
+        let offset = struct.unpack_from("<I", buf, 0)[0];
+        links[link_name] = heap.get_object_name(offset);
+      }
+    });
+    return links;
+  }
+};
+var GlobalHeap = class {
+  constructor(fh, offset) {
+    this.ready = this.init(fh, offset);
+  }
+  async init(fh, offset) {
+    let header = await _unpack_struct_from_async(GLOBAL_HEAP_HEADER, fh, offset);
+    offset += GLOBAL_HEAP_HEADER_SIZE;
+    let heap_data_size = header.get("collection_size") - GLOBAL_HEAP_HEADER_SIZE;
+    let heap_data = await fh.slice(offset, offset + heap_data_size);
+    this.heap_data = heap_data;
+    this._header = header;
+    this._objects = null;
+  }
+  get objects() {
+    if (this._objects == null) {
+      this._objects = /* @__PURE__ */ new Map();
+      var offset = 0;
+      while (offset <= this.heap_data.byteLength - GLOBAL_HEAP_OBJECT_SIZE) {
+        let info = _unpack_struct_from(GLOBAL_HEAP_OBJECT, this.heap_data, offset);
+        if (info.get("object_index") == 0) {
+          break;
+        }
+        offset += GLOBAL_HEAP_OBJECT_SIZE;
+        let obj_data = this.heap_data.slice(offset, offset + info.get("object_size"));
+        this._objects.set(info.get("object_index"), obj_data);
+        offset += _padded_size(info.get("object_size"));
+      }
+    }
+    return this._objects;
+  }
+};
+var FractalHeap = class {
+  constructor(fh, offset) {
+    this.fh = fh;
+    this.ready = this.init(offset);
+  }
+  async init(offset) {
+    let header = await _unpack_struct_from_async(FRACTAL_HEAP_HEADER, this.fh, offset);
+    offset += _structure_size(FRACTAL_HEAP_HEADER);
+    assert(header.get("signature") == "FRHP");
+    assert(header.get("version") == 0);
+    if (header.get("filter_info_size") > 0) {
+      throw "Filter info size not supported on FractalHeap";
+    }
+    if (header.get("btree_address_huge_objects") == UNDEFINED_ADDRESS) {
+      header.set("btree_address_huge_objects", null);
+    } else {
+      throw "Huge objects not implemented in FractalHeap";
+    }
+    if (header.get("root_block_address") == UNDEFINED_ADDRESS) {
+      header.set("root_block_address", null);
+    }
+    let nbits = header.get("log2_maximum_heap_size");
+    let block_offset_size = this._min_size_nbits(nbits);
+    let h = /* @__PURE__ */ new Map([
+      ["signature", "4s"],
+      ["version", "B"],
+      ["heap_header_adddress", "Q"],
+      ["block_offset", `${block_offset_size}B`]
+    ]);
+    this.indirect_block_header = new Map(h);
+    this.indirect_block_header_size = _structure_size(h);
+    if ((header.get("flags") & 2) == 2) {
+      h.set("checksum", "I");
+    }
+    this.direct_block_header = h;
+    this.direct_block_header_size = _structure_size(h);
+    let maximum_dblock_size = header.get("maximum_direct_block_size");
+    this._managed_object_offset_size = this._min_size_nbits(nbits);
+    let value = Math.min(maximum_dblock_size, header.get("max_managed_object_size"));
+    this._managed_object_length_size = this._min_size_integer(value);
+    let start_block_size = header.get("starting_block_size");
+    let table_width = header.get("table_width");
+    if (!(start_block_size > 0)) {
+      throw "Starting block size == 0 not implemented";
+    }
+    let log2_maximum_dblock_size = Number(Math.floor(Math.log2(maximum_dblock_size)));
+    assert(1n << BigInt(log2_maximum_dblock_size) == maximum_dblock_size);
+    let log2_start_block_size = Number(Math.floor(Math.log2(start_block_size)));
+    assert(1n << BigInt(log2_start_block_size) == start_block_size);
+    this._max_direct_nrows = log2_maximum_dblock_size - log2_start_block_size + 2;
+    let log2_table_width = Math.floor(Math.log2(table_width));
+    assert(1 << log2_table_width == table_width);
+    this._indirect_nrows_sub = log2_table_width + log2_start_block_size - 1;
+    this.header = header;
+    this.nobjects = header.get("managed_object_count") + header.get("huge_object_count") + header.get("tiny_object_count");
+    let managed = [];
+    let root_address = header.get("root_block_address");
+    let nrows = 0;
+    if (root_address != null) {
+      nrows = header.get("indirect_current_rows_count");
+    }
+    if (nrows > 0) {
+      for await (let data of this._iter_indirect_block(this.fh, root_address, nrows)) {
+        managed.push(data);
+      }
+    } else {
+      let data = await this._read_direct_block(this.fh, root_address, start_block_size);
+      managed.push(data);
+    }
+    let data_size = managed.reduce((p, c) => p + c.byteLength, 0);
+    let combined = new Uint8Array(data_size);
+    let moffset = 0;
+    managed.forEach((m) => {
+      combined.set(new Uint8Array(m), moffset);
+      moffset += m.byteLength;
+    });
+    this.managed = combined.buffer;
+  }
+  async _read_direct_block(fh, offset, block_size) {
+    let data = await fh.slice(offset, offset + block_size);
+    let header = _unpack_struct_from(this.direct_block_header, data);
+    assert(header.get("signature") == "FHDB");
+    return data;
+  }
+  get_data(heapid) {
+    let firstbyte = struct.unpack_from("<B", heapid, 0)[0];
+    let idtype = firstbyte >> 4 & 3;
+    let version = firstbyte >> 6;
+    let data_offset = 1;
+    if (idtype == 0) {
+      assert(version == 0);
+      let nbytes = this._managed_object_offset_size;
+      let offset = _unpack_integer(nbytes, heapid, data_offset);
+      data_offset += nbytes;
+      nbytes = this._managed_object_length_size;
+      let size = _unpack_integer(nbytes, heapid, data_offset);
+      return this.managed.slice(offset, offset + size);
+    } else if (idtype == 1) {
+      throw "tiny objectID not supported in FractalHeap";
+    } else if (idtype == 2) {
+      throw "huge objectID not supported in FractalHeap";
+    } else {
+      throw "unknown objectID type in FractalHeap";
+    }
+  }
+  _min_size_integer(integer) {
+    return this._min_size_nbits(bitSize(integer));
+  }
+  _min_size_nbits(nbits) {
+    return Math.ceil(nbits / 8);
+  }
+  async *_iter_indirect_block(fh, offset, nrows) {
+    let header = await _unpack_struct_from_async(this.indirect_block_header, fh, offset);
+    offset += this.indirect_block_header_size;
+    assert(header.get("signature") == "FHIB");
+    let block_offset_bytes = header.get("block_offset");
+    let block_offset = block_offset_bytes.reduce((p, c, i) => p + (c << i * 8), 0);
+    header.set("block_offset", block_offset);
+    let [ndirect, nindirect] = this._indirect_info(nrows);
+    let direct_blocks = [];
+    for (let i = 0; i < ndirect; i++) {
+      let address = (await struct.unpack_from_async("<Q", fh, offset))[0];
+      offset += 8;
+      if (address == UNDEFINED_ADDRESS) {
+        break;
+      }
+      let block_size = this._calc_block_size(i);
+      direct_blocks.push([address, block_size]);
+    }
+    let indirect_blocks = [];
+    for (let i = ndirect; i < ndirect + nindirect; i++) {
+      let address = (await struct.unpack_from_async("<Q", fh, offset))[0];
+      offset += 8;
+      if (address == UNDEFINED_ADDRESS) {
+        break;
+      }
+      let block_size = this._calc_block_size(i);
+      let nrows2 = this._iblock_nrows_from_block_size(block_size);
+      indirect_blocks.push([address, nrows2]);
+    }
+    for (let [address, block_size] of direct_blocks) {
+      let obj = await this._read_direct_block(fh, address, block_size);
+      yield obj;
+    }
+    for (let [address, nrows2] of indirect_blocks) {
+      for await (let obj of this._iter_indirect_block(fh, address, nrows2)) {
+        yield obj;
+      }
+    }
+  }
+  _calc_block_size(iblock) {
+    let row = Math.floor(iblock / this.header.get("table_width"));
+    return 2 ** Math.max(row - 1, 0) * this.header.get("starting_block_size");
+  }
+  _iblock_nrows_from_block_size(block_size) {
+    let log2_block_size = Math.floor(Math.log2(block_size));
+    assert(2 ** log2_block_size == block_size);
+    return log2_block_size - this._indirect_nrows_sub;
+  }
+  _indirect_info(nrows) {
+    let table_width = this.header.get("table_width");
+    let nobjects = nrows * table_width;
+    let ndirect_max = this._max_direct_nrows * table_width;
+    let ndirect, nindirect;
+    if (nrows <= ndirect_max) {
+      ndirect = nobjects;
+      nindirect = 0;
+    } else {
+      ndirect = ndirect_max;
+      nindirect = nobjects - ndirect_max;
+    }
+    return [ndirect, nindirect];
+  }
+  _int_format(bytelength) {
+    return ["B", "H", "I", "Q"][bytelength - 1];
+  }
+};
+var FORMAT_SIGNATURE = struct.unpack_from("8s", new Uint8Array([137, 72, 68, 70, 13, 10, 26, 10]).buffer)[0];
+var UNDEFINED_ADDRESS = struct.unpack_from("<Q", new Uint8Array([255, 255, 255, 255, 255, 255, 255, 255]).buffer)[0];
+var SUPERBLOCK_V0 = /* @__PURE__ */ new Map([
+  ["format_signature", "8s"],
+  ["superblock_version", "B"],
+  ["free_storage_version", "B"],
+  ["root_group_version", "B"],
+  ["reserved_0", "B"],
+  ["shared_header_version", "B"],
+  ["offset_size", "B"],
+  ["length_size", "B"],
+  ["reserved_1", "B"],
+  ["group_leaf_node_k", "H"],
+  ["group_internal_node_k", "H"],
+  ["file_consistency_flags", "L"],
+  ["base_address_lower", "Q"],
+  ["free_space_address", "Q"],
+  ["end_of_file_address", "Q"],
+  ["driver_information_address", "Q"]
+]);
+var SUPERBLOCK_V0_SIZE = _structure_size(SUPERBLOCK_V0);
+var SUPERBLOCK_V2_V3 = /* @__PURE__ */ new Map([
+  ["format_signature", "8s"],
+  ["superblock_version", "B"],
+  ["offset_size", "B"],
+  ["length_size", "B"],
+  ["file_consistency_flags", "B"],
+  ["base_address", "Q"],
+  ["superblock_extension_address", "Q"],
+  ["end_of_file_address", "Q"],
+  ["root_group_address", "Q"],
+  ["superblock_checksum", "I"]
+]);
+var SUPERBLOCK_V2_V3_SIZE = _structure_size(SUPERBLOCK_V2_V3);
+var SYMBOL_TABLE_ENTRY = /* @__PURE__ */ new Map([
+  ["link_name_offset", "Q"],
+  ["object_header_address", "Q"],
+  ["cache_type", "I"],
+  ["reserved", "I"],
+  ["scratch", "16s"]
+]);
+var SYMBOL_TABLE_ENTRY_SIZE = _structure_size(SYMBOL_TABLE_ENTRY);
+var SYMBOL_TABLE_NODE = /* @__PURE__ */ new Map([
+  ["signature", "4s"],
+  ["version", "B"],
+  ["reserved_0", "B"],
+  ["symbols", "H"]
+]);
+var SYMBOL_TABLE_NODE_SIZE = _structure_size(SYMBOL_TABLE_NODE);
+var LOCAL_HEAP = /* @__PURE__ */ new Map([
+  ["signature", "4s"],
+  ["version", "B"],
+  ["reserved", "3s"],
+  ["data_segment_size", "Q"],
+  ["offset_to_free_list", "Q"],
+  ["address_of_data_segment", "Q"]
+]);
+var GLOBAL_HEAP_HEADER = /* @__PURE__ */ new Map([
+  ["signature", "4s"],
+  ["version", "B"],
+  ["reserved", "3s"],
+  ["collection_size", "Q"]
+]);
+var GLOBAL_HEAP_HEADER_SIZE = _structure_size(GLOBAL_HEAP_HEADER);
+var GLOBAL_HEAP_OBJECT = /* @__PURE__ */ new Map([
+  ["object_index", "H"],
+  ["reference_count", "H"],
+  ["reserved", "I"],
+  ["object_size", "Q"]
+]);
+var GLOBAL_HEAP_OBJECT_SIZE = _structure_size(GLOBAL_HEAP_OBJECT);
+var FRACTAL_HEAP_HEADER = /* @__PURE__ */ new Map([
+  ["signature", "4s"],
+  ["version", "B"],
+  ["object_index_size", "H"],
+  ["filter_info_size", "H"],
+  ["flags", "B"],
+  ["max_managed_object_size", "I"],
+  ["next_huge_object_index", "Q"],
+  ["btree_address_huge_objects", "Q"],
+  ["managed_freespace_size", "Q"],
+  ["freespace_manager_address", "Q"],
+  ["managed_space_size", "Q"],
+  ["managed_alloc_size", "Q"],
+  ["next_directblock_iterator_address", "Q"],
+  ["managed_object_count", "Q"],
+  ["huge_objects_total_size", "Q"],
+  ["huge_object_count", "Q"],
+  ["tiny_objects_total_size", "Q"],
+  ["tiny_object_count", "Q"],
+  ["table_width", "H"],
+  ["starting_block_size", "Q"],
+  ["maximum_direct_block_size", "Q"],
+  ["log2_maximum_heap_size", "H"],
+  ["indirect_starting_rows_count", "H"],
+  ["root_block_address", "Q"],
+  ["indirect_current_rows_count", "H"]
+]);
+
+// esm/dataobjects.js
+var DataObjects = class {
+  constructor(fh, offset) {
+    this.ready = this.init(fh, offset);
+  }
+  async init(fh, offset) {
+    let version_hint = (await struct.unpack_from_async("<B", fh, offset))[0];
+    if (version_hint == 1) {
+      var [msgs, msg_data, header] = await this._parse_v1_objects(fh, offset);
+    } else if (version_hint == "O".charCodeAt(0)) {
+      var [msgs, msg_data, header] = await this._parse_v2_objects(fh, offset);
+    } else {
+      throw "InvalidHDF5File('unknown Data Object Header')";
+    }
+    this.fh = fh;
+    this.msgs = msgs;
+    this.msg_data = msg_data;
+    this.offset = offset;
+    this._global_heaps = {};
+    this._header = header;
+    this._filter_pipeline = null;
+    this._chunk_params_set = false;
+    this._chunks = null;
+    this._chunk_dims = null;
+    this._chunk_address = null;
+  }
+  get dtype() {
+    let msg = this.find_msg_type(DATATYPE_MSG_TYPE)[0];
+    let msg_offset = msg.get("offset_to_message");
+    return new DatatypeMessage(this.fh, msg_offset).dtype;
+  }
+  get chunks() {
+    return this._get_chunk_params().then(() => {
+      return this._chunks;
+    });
+  }
+  get shape() {
+    let msg = this.find_msg_type(DATASPACE_MSG_TYPE)[0];
+    let msg_offset = msg.get("offset_to_message");
+    return determine_data_shape(this.fh, msg_offset);
+  }
+  async get_filter_pipeline() {
+    if (this._filter_pipeline != null) {
+      return this._filter_pipeline;
+    }
+    let filter_msgs = this.find_msg_type(DATA_STORAGE_FILTER_PIPELINE_MSG_TYPE);
+    if (!filter_msgs.length) {
+      this._filter_pipeline = null;
+      return this._filter_pipeline;
+    }
+    var offset = filter_msgs[0].get("offset_to_message");
+    let [version, nfilters] = await struct.unpack_from_async("<BB", this.fh, offset);
+    offset += struct.calcsize("<BB");
+    var filters = [];
+    if (version == 1) {
+      await struct.unpack_from_async("<HI", this.fh, offset);
+      offset += struct.calcsize("<HI");
+      for (var _ = 0; _ < nfilters; _++) {
+        let filter_info = await _unpack_struct_from_async(FILTER_PIPELINE_DESCR_V1, this.fh, offset);
+        offset += FILTER_PIPELINE_DESCR_V1_SIZE;
+        let padded_name_length = _padded_size(filter_info.get("name_length"), 8);
+        let fmt = "<" + padded_name_length.toFixed() + "s";
+        let filter_name = (await struct.unpack_from_async(fmt, this.fh, offset))[0];
+        filter_info.set("filter_name", filter_name);
+        offset += padded_name_length;
+        fmt = "<" + filter_info.get("client_data_values").toFixed() + "I";
+        let client_data = await struct.unpack_from_async(fmt, this.fh, offset);
+        filter_info.set("client_data", client_data);
+        offset += 4 * filter_info.get("client_data_values");
+        if (filter_info.get("client_data_values") % 2) {
+          offset += 4;
+        }
+        filters.push(filter_info);
+      }
+    } else if (version == 2) {
+      for (let nf = 0; nf < nfilters; nf++) {
+        let filter_info = /* @__PURE__ */ new Map();
+        let buf = this.fh;
+        let filter_id = (await struct.unpack_from_async("<H", buf, offset))[0];
+        offset += 2;
+        filter_info.set("filter_id", filter_id);
+        let name_length = 0;
+        if (filter_id > 255) {
+          name_length = (await struct.unpack_from_async("<H", buf, offset))[0];
+          offset += 2;
+        }
+        let flags = (await struct.unpack_from_async("<H", buf, offset))[0];
+        offset += 2;
+        let optional = (flags & 1) > 0;
+        filter_info.set("optional", optional);
+        let num_client_values = (await struct.unpack_from_async("<H", buf, offset))[0];
+        offset += 2;
+        let name;
+        if (name_length > 0) {
+          name = (await struct.unpack_from_async(`${name_length}s`, buf, offset))[0];
+          offset += name_length;
+        }
+        filter_info.set("name", name);
+        let client_values = await struct.unpack_from_async(`<${num_client_values}i`, buf, offset);
+        offset += 4 * num_client_values;
+        filter_info.set("client_data_values", client_values);
+        filters.push(filter_info);
+      }
+    } else {
+      throw `version ${version} is not supported`;
+    }
+    this._filter_pipeline = filters;
+    return this._filter_pipeline;
+  }
+  find_msg_type(msg_type) {
+    return this.msgs.filter(function(m) {
+      return m.get("type") == msg_type;
+    });
+  }
+  async get_attributes() {
+    let attrs = {};
+    let attr_msgs = this.find_msg_type(ATTRIBUTE_MSG_TYPE);
+    for (let msg of attr_msgs) {
+      let offset = msg.get("offset_to_message");
+      let [name, value] = await this.unpack_attribute(offset);
+      attrs[name] = value;
+    }
+    return attrs;
+  }
+  async get_fillvalue() {
+    let msg = this.find_msg_type(FILLVALUE_MSG_TYPE)[0];
+    var offset = msg.get("offset_to_message");
+    var is_defined;
+    let version = (await struct.unpack_from_async("<B", this.fh, offset))[0];
+    var info, size, fillvalue;
+    if (version == 1 || version == 2) {
+      info = await _unpack_struct_from_async(FILLVAL_MSG_V1V2, this.fh, offset);
+      offset += FILLVAL_MSG_V1V2_SIZE;
+      is_defined = info.get("fillvalue_defined");
+    } else if (version == 3) {
+      info = await _unpack_struct_from_async(FILLVAL_MSG_V3, this.fh, offset);
+      offset += FILLVAL_MSG_V3_SIZE;
+      is_defined = info.get("flags") & 32;
+    } else {
+      throw 'InvalidHDF5File("Unknown fillvalue msg version: "' + String(version);
+    }
+    if (is_defined) {
+      size = (await struct.unpack_from_async("<I", this.fh, offset))[0];
+      offset += 4;
+    } else {
+      size = 0;
+    }
+    if (size) {
+      let [getter, big_endian, size2] = dtype_getter(await this.dtype);
+      let payload_view = new DataView64(await this.fh.slice(offset, offset + size2));
+      fillvalue = payload_view[getter](offset, !big_endian, size2);
+    } else {
+      fillvalue = 0;
+    }
+    return fillvalue;
+  }
+  async unpack_attribute(offset) {
+    let version = (await struct.unpack_from_async("<B", this.fh, offset))[0];
+    var attr_map, padding_multiple;
+    if (version == 1) {
+      attr_map = await _unpack_struct_from_async(ATTR_MSG_HEADER_V1, this.fh, offset);
+      assert(attr_map.get("version") == 1);
+      offset += ATTR_MSG_HEADER_V1_SIZE;
+      padding_multiple = 8;
+    } else if (version == 3) {
+      attr_map = await _unpack_struct_from_async(ATTR_MSG_HEADER_V3, this.fh, offset);
+      assert(attr_map.get("version") == 3);
+      offset += ATTR_MSG_HEADER_V3_SIZE;
+      padding_multiple = 1;
+    } else {
+      throw "unsupported attribute message version: " + version;
+    }
+    let name_size = attr_map.get("name_size");
+    let name = (await struct.unpack_from_async("<" + name_size.toFixed() + "s", this.fh, offset))[0];
+    name = name.replace(/\x00$/, "");
+    offset += _padded_size(name_size, padding_multiple);
+    var dtype;
+    try {
+      dtype = await new DatatypeMessage(this.fh, offset).dtype;
+    } catch (e) {
+      console.warn("Attribute " + name + " type not implemented, set to null.");
+      return [name, null];
+    }
+    offset += _padded_size(attr_map.get("datatype_size"), padding_multiple);
+    let shape = await this.determine_data_shape(this.fh, offset);
+    let items = shape.reduce(function(a, b) {
+      return a * b;
+    }, 1);
+    offset += _padded_size(attr_map.get("dataspace_size"), padding_multiple);
+    if (dtype.datatype_class === 5) {
+      value = await this.fh.slice(offset, offset + dtype.size);
+    } else {
+      var value = await this._attr_value(dtype, this.fh, items, offset);
+      if (shape.length == 0) {
+        value = value[0];
+      }
+    }
+    return [name, value];
+  }
+  async determine_data_shape(buf, offset) {
+    let version = (await struct.unpack_from_async("<B", buf, offset))[0];
+    var header;
+    if (version == 1) {
+      header = await _unpack_struct_from_async(DATASPACE_MSG_HEADER_V1, buf, offset);
+      assert(header.get("version") == 1);
+      offset += DATASPACE_MSG_HEADER_V1_SIZE;
+    } else if (version == 2) {
+      header = await _unpack_struct_from_async(DATASPACE_MSG_HEADER_V2, buf, offset);
+      assert(header.get("version") == 2);
+      offset += DATASPACE_MSG_HEADER_V2_SIZE;
+    } else {
+      throw "unknown dataspace message version";
+    }
+    let ndims = header.get("dimensionality");
+    let dim_sizes = await struct.unpack_from_async("<" + ndims.toFixed() + "Q", buf, offset);
+    return dim_sizes;
+  }
+  async _attr_value(dtype, buf, count, offset) {
+    var value = new Array(count);
+    if (dtype instanceof Array) {
+      let dtype_class = dtype[0];
+      for (var i = 0; i < count; i++) {
+        if (dtype_class == "VLEN_STRING") {
+          let character_set = dtype[2];
+          var [vlen, vlen_data] = await this._vlen_size_and_data(buf, offset);
+          const encoding = character_set == 0 ? "ascii" : "utf-8";
+          const decoder = new TextDecoder(encoding);
+          value[i] = decoder.decode(vlen_data);
+          offset += 16;
+        } else if (dtype_class == "REFERENCE") {
+          var address = await struct.unpack_from_async("<Q", buf, offset);
+          value[i] = address;
+          offset += 8;
+        } else if (dtype_class == "VLEN_SEQUENCE") {
+          let base_dtype = dtype[1];
+          var [vlen, vlen_data] = this._vlen_size_and_data(buf, offset);
+          value[i] = this._attr_value(base_dtype, vlen_data, vlen, 0);
+          offset += 16;
+        } else {
+          throw "NotImplementedError";
+        }
+      }
+    } else {
+      let [getter, big_endian, size] = dtype_getter(dtype);
+      const arrayBuffer = await buf.slice(offset, offset + count * size);
+      let view = new DataView64(arrayBuffer, 0);
+      let bufferOffset = 0;
+      for (var i = 0; i < count; i++) {
+        value[i] = view[getter](bufferOffset, !big_endian, size);
+        bufferOffset += size;
+      }
+    }
+    return value;
+  }
+  async _vlen_size_and_data(buf, offset) {
+    let vlen_size = (await struct.unpack_from_async("<I", buf, offset))[0];
+    let gheap_id = await _unpack_struct_from_async(GLOBAL_HEAP_ID, buf, offset + 4);
+    let gheap_address = gheap_id.get("collection_address");
+    assert(gheap_id.get("collection_address") < Number.MAX_SAFE_INTEGER);
+    var gheap;
+    if (!(gheap_address in this._global_heaps)) {
+      gheap = new GlobalHeap(this.fh, gheap_address);
+      await gheap.ready;
+      this._global_heaps[gheap_address] = gheap;
+    }
+    gheap = this._global_heaps[gheap_address];
+    let vlen_data = gheap.objects.get(gheap_id.get("object_index"));
+    return [vlen_size, vlen_data];
+  }
+  async _parse_v1_objects(fh, offset) {
+    let header = await _unpack_struct_from_async(OBJECT_HEADER_V1, fh, offset);
+    assert(header.get("version") == 1);
+    let total_header_messages = header.get("total_header_messages");
+    var block_size = header.get("object_header_size");
+    var block_offset = offset + _structure_size(OBJECT_HEADER_V1);
+    var msg_data = await fh.slice(block_offset, block_offset + block_size);
+    var object_header_blocks = [[block_offset, block_size]];
+    var current_block = 0;
+    var local_offset = 0;
+    var msgs = new Array(total_header_messages);
+    for (var i = 0; i < total_header_messages; i++) {
+      if (local_offset >= block_size) {
+        [block_offset, block_size] = object_header_blocks[++current_block];
+        local_offset = 0;
+      }
+      let msg = await _unpack_struct_from_async(HEADER_MSG_INFO_V1, fh, block_offset + local_offset);
+      let offset_to_message = block_offset + local_offset + HEADER_MSG_INFO_V1_SIZE;
+      msg.set("offset_to_message", offset_to_message);
+      if (msg.get("type") == OBJECT_CONTINUATION_MSG_TYPE) {
+        var [fh_off, size] = await struct.unpack_from_async("<QQ", fh, offset_to_message);
+        object_header_blocks.push([fh_off, size]);
+      }
+      local_offset += HEADER_MSG_INFO_V1_SIZE + msg.get("size");
+      msgs[i] = msg;
+    }
+    return [msgs, msg_data, header];
+  }
+  async _parse_v2_objects(buf, offset) {
+    var [header, creation_order_size, block_offset] = await this._parse_v2_header(buf, offset);
+    offset = block_offset;
+    var msgs = [];
+    var block_size = header.get("size_of_chunk_0");
+    var msg_data = buf.slice(offset, offset += block_size);
+    var object_header_blocks = [[block_offset, block_size]];
+    var current_block = 0;
+    var local_offset = 0;
+    while (true) {
+      if (local_offset >= block_size - HEADER_MSG_INFO_V2_SIZE) {
+        let next_block = object_header_blocks[++current_block];
+        if (next_block == null) {
+          break;
+        }
+        [block_offset, block_size] = next_block;
+        local_offset = 0;
+      }
+      let msg = await _unpack_struct_from_async(HEADER_MSG_INFO_V2, buf, block_offset + local_offset);
+      let offset_to_message = block_offset + local_offset + HEADER_MSG_INFO_V2_SIZE + creation_order_size;
+      msg.set("offset_to_message", offset_to_message);
+      if (msg.get("type") == OBJECT_CONTINUATION_MSG_TYPE) {
+        var [fh_off, size] = await struct.unpack_from_async("<QQ", buf, offset_to_message);
+        object_header_blocks.push([fh_off + 4, size - 4]);
+      }
+      local_offset += HEADER_MSG_INFO_V2_SIZE + msg.get("size") + creation_order_size;
+      msgs.push(msg);
+    }
+    return [msgs, msg_data, header];
+  }
+  async _parse_v2_header(buf, offset) {
+    let header = await _unpack_struct_from_async(OBJECT_HEADER_V2, buf, offset);
+    var creation_order_size;
+    offset += _structure_size(OBJECT_HEADER_V2);
+    assert(header.get("version") == 2);
+    if (header.get("flags") & 4) {
+      creation_order_size = 2;
+    } else {
+      creation_order_size = 0;
+    }
+    assert((header.get("flags") & 16) == 0);
+    if (header.get("flags") & 32) {
+      let times = await struct.unpack_from_async("<4I", buf, offset);
+      offset += 16;
+      header.set("access_time", times[0]);
+      header.set("modification_time", times[1]);
+      header.set("change_time", times[2]);
+      header.set("birth_time", times[3]);
+    }
+    let chunk_fmt = ["<B", "<H", "<I", "<Q"][header.get("flags") & 3];
+    header.set("size_of_chunk_0", (await struct.unpack_from_async(chunk_fmt, buf, offset))[0]);
+    offset += struct.calcsize(chunk_fmt);
+    return [header, creation_order_size, offset];
+  }
+  async find_link(name) {
+    if (this._links) {
+      for (link of this._links) {
+        if (name === link[0]) {
+          return link;
+        }
+      }
+    } else {
+      const links = [];
+      for await (const link2 of this.iter_links()) {
+        if (name === link2[0]) {
+          return link2;
+        }
+        links.push(link2);
+      }
+      this._links = links;
+    }
+    return void 0;
+  }
+  async get_links() {
+    const links = [];
+    for await (const link2 of this.iter_links()) {
+      links.push(link2);
+    }
+    return Object.fromEntries(links);
+  }
+  async *iter_links() {
+    for (let msg of this.msgs) {
+      if (msg.get("type") == SYMBOL_TABLE_MSG_TYPE) {
+        yield* this._iter_links_from_symbol_tables(msg);
+      } else if (msg.get("type") == LINK_MSG_TYPE) {
+        yield this._get_link_from_link_msg(msg);
+      } else if (msg.get("type") == LINK_INFO_MSG_TYPE) {
+        yield* this._iter_link_from_link_info_msg(msg);
+      }
+    }
+  }
+  async *_iter_links_from_symbol_tables(sym_tbl_msg) {
+    assert(sym_tbl_msg.get("size") == 16);
+    let data = await _unpack_struct_from_async(SYMBOL_TABLE_MSG, this.fh, sym_tbl_msg.get("offset_to_message"));
+    yield* this._iter_links_btree_v1(data.get("btree_address"), data.get("heap_address"));
+  }
+  async *_iter_links_btree_v1(btree_address, heap_address) {
+    let btree = new BTreeV1Groups(this.fh, btree_address);
+    await btree.ready;
+    let heap = new Heap(this.fh, heap_address);
+    await heap.ready;
+    for (let symbol_table_address of btree.symbol_table_addresses()) {
+      let table = new SymbolTable(this.fh, symbol_table_address);
+      await table.ready;
+      table.assign_name(heap);
+      yield* Object.entries(table.get_links(heap));
+    }
+  }
+  async _get_link_from_link_msg(link_msg) {
+    let offset = link_msg.get("offset_to_message");
+    return await this._decode_link_msg(this.fh, offset)[1];
+  }
+  async _decode_link_msg(data, offset) {
+    let [version, flags] = await struct.unpack_from_async("<BB", data, offset);
+    offset += 2;
+    assert(version == 1);
+    let size_of_length_of_link_name = 2 ** (flags & 3);
+    let link_type_field_present = (flags & 2 ** 3) > 0;
+    let link_name_character_set_field_present = (flags & 2 ** 4) > 0;
+    let ordered = (flags & 2 ** 2) > 0;
+    let link_type;
+    if (link_type_field_present) {
+      link_type = (await struct.unpack_from_async("<B", data, offset))[0];
+      offset += 1;
+    } else {
+      link_type = 0;
+    }
+    assert([0, 1].includes(link_type));
+    let creationorder;
+    if (ordered) {
+      creationorder = (await struct.unpack_from_async("<Q", data, offset))[0];
+      offset += 8;
+    }
+    let link_name_character_set = 0;
+    if (link_name_character_set_field_present) {
+      link_name_character_set = (await struct.unpack_from_async("<B", data, offset))[0];
+      offset += 1;
+    }
+    let encoding = link_name_character_set == 0 ? "ascii" : "utf-8";
+    let name_size_fmt = ["<B", "<H", "<I", "<Q"][flags & 3];
+    let name_size = (await struct.unpack_from_async(name_size_fmt, data, offset))[0];
+    offset += size_of_length_of_link_name;
+    let name = new TextDecoder(encoding).decode(await data.slice(offset, offset + name_size));
+    offset += name_size;
+    let address;
+    if (link_type == 0) {
+      address = (await struct.unpack_from_async("<Q", data, offset))[0];
+    } else if (link_type == 1) {
+      let length_of_soft_link_value = (await struct.unpack_from_async("<H", data, offset))[0];
+      offset += 2;
+      address = new TextDecoder(encoding).decode(await data.slice(offset, offset + length_of_soft_link_value));
+    }
+    return [creationorder, [name, address]];
+  }
+  async *_iter_link_from_link_info_msg(info_msg) {
+    let offset = info_msg.get("offset_to_message");
+    let data = await this._decode_link_info_msg(this.fh, offset);
+    let heap_address = data.get("heap_address");
+    let name_btree_address = data.get("name_btree_address");
+    let order_btree_address = data.get("order_btree_address");
+    if (name_btree_address != null) {
+      yield* this._iter_links_btree_v2(name_btree_address, order_btree_address, heap_address);
+    }
+  }
+  async *_iter_links_btree_v2(name_btree_address, order_btree_address, heap_address) {
+    let heap = new FractalHeap(this.fh, heap_address);
+    await heap.ready;
+    let btree;
+    const ordered = order_btree_address != null;
+    if (ordered) {
+      btree = new BTreeV2GroupOrders(this.fh, order_btree_address);
+      await btree.ready;
+    } else {
+      btree = new BTreeV2GroupNames(this.fh, name_btree_address);
+      await btree.ready;
+    }
+    let items = /* @__PURE__ */ new Map();
+    for (let record of btree.iter_records()) {
+      let data = heap.get_data(record.get("heapid"));
+      let [creationorder, item] = await this._decode_link_msg(data, 0);
+      const key = ordered ? creationorder : item[0];
+      items.set(key, item);
+    }
+    let sorted_keys = Array.from(items.keys()).sort();
+    for (let key of sorted_keys) {
+      yield items.get(key);
+    }
+  }
+  async _decode_link_info_msg(data, offset) {
+    let [version, flags] = await struct.unpack_from_async("<BB", data, offset);
+    assert(version == 0);
+    offset += 2;
+    if ((flags & 1) > 0) {
+      offset += 8;
+    }
+    let fmt = (flags & 2) > 0 ? LINK_INFO_MSG2 : LINK_INFO_MSG1;
+    let link_info = await _unpack_struct_from_async(fmt, data, offset);
+    let output = /* @__PURE__ */ new Map();
+    for (let [k, v] of link_info.entries()) {
+      output.set(k, v == UNDEFINED_ADDRESS2 ? null : v);
+    }
+    return output;
+  }
+  get is_dataset() {
+    return this.find_msg_type(DATASPACE_MSG_TYPE).length > 0;
+  }
+  async get_data() {
+    let msg = this.find_msg_type(DATA_STORAGE_MSG_TYPE)[0];
+    let msg_offset = msg.get("offset_to_message");
+    var [version, dims, layout_class, property_offset] = await this._get_data_message_properties(msg_offset);
+    if (layout_class == 0) {
+      throw "Compact storage of DataObject not implemented";
+    } else if (layout_class == 1) {
+      return this._get_contiguous_data(property_offset);
+    } else if (layout_class == 2) {
+      return this._get_chunked_data(msg_offset);
+    }
+  }
+  async _get_data_message_properties(msg_offset) {
+    let dims, layout_class, property_offset;
+    let [version, arg1, arg2] = await struct.unpack_from_async("<BBB", this.fh, msg_offset);
+    if (version == 1 || version == 2) {
+      dims = arg1;
+      layout_class = arg2;
+      property_offset = msg_offset;
+      property_offset += struct.calcsize("<BBB");
+      property_offset += struct.calcsize("<BI");
+      assert(layout_class == 1 || layout_class == 2);
+    } else if (version == 3 || version == 4) {
+      layout_class = arg1;
+      property_offset = msg_offset;
+      property_offset += struct.calcsize("<BB");
+    }
+    assert(version >= 1 && version <= 4);
+    return [version, dims, layout_class, property_offset];
+  }
+  async _get_contiguous_data(property_offset) {
+    let [data_offset] = await struct.unpack_from_async("<Q", this.fh, property_offset);
+    const shape = await this.shape;
+    const dtype = await this.dtype;
+    if (data_offset == UNDEFINED_ADDRESS2) {
+      let size = shape.reduce(function(a, b) {
+        return a * b;
+      }, 1);
+      return new Array(size);
+    }
+    var fullsize = shape.reduce(function(a, b) {
+      return a * b;
+    }, 1);
+    if (!(dtype instanceof Array)) {
+      if (/[<>=!@\|]?(i|u|f|S)(\d*)/.test(dtype)) {
+        let [item_getter, item_is_big_endian, item_size] = dtype_getter(dtype);
+        let output = new Array(fullsize);
+        const local_buffer = await this.fh.slice(data_offset, data_offset + item_size * fullsize);
+        let view = new DataView64(local_buffer);
+        for (var i = 0; i < fullsize; i++) {
+          output[i] = view[item_getter](i * item_size, !item_is_big_endian, item_size);
+        }
+        return output;
+      } else if (dtype.datatype_class === 5) {
+        return this.fh.slice(data_offset, data_offset + dtype.size);
+      } else {
+        throw "not Implemented - no proper dtype defined";
+      }
+    } else {
+      let dtype_class = dtype[0];
+      if (dtype_class == "REFERENCE") {
+        let size = dtype[1];
+        if (size != 8) {
+          throw "NotImplementedError('Unsupported Reference type')";
+        }
+        let ref_addresses = await this.fh.slice(data_offset, data_offset + fullsize);
+        return ref_addresses;
+      } else if (dtype_class == "VLEN_STRING") {
+        let character_set = dtype[2];
+        const encoding = character_set == 0 ? "ascii" : "utf-8";
+        const decoder = new TextDecoder(encoding);
+        var value = [];
+        for (var i = 0; i < fullsize; i++) {
+          const [vlen, vlen_data] = await this._vlen_size_and_data(this.fh, data_offset);
+          value[i] = decoder.decode(vlen_data);
+          data_offset += 16;
+        }
+        return value;
+      } else {
+        throw "NotImplementedError('datatype not implemented')";
+      }
+    }
+  }
+  async _get_chunked_data(offset) {
+    await this._get_chunk_params();
+    if (this._chunk_address == UNDEFINED_ADDRESS2) {
+      return [];
+    }
+    var chunk_btree = new BTreeV1RawDataChunks(this.fh, this._chunk_address, this._chunk_dims);
+    await chunk_btree.ready;
+    const dtype = await this.dtype;
+    const shape = await this.shape;
+    const chunks = await this.chunks;
+    const filter_pipeline = await this.get_filter_pipeline();
+    let data = await chunk_btree.construct_data_from_chunks(chunks, shape, dtype, filter_pipeline);
+    if (dtype instanceof Array && /^VLEN/.test(dtype[0])) {
+      let dtype_class = dtype[0];
+      for (var i = 0; i < data.length; i++) {
+        let [item_size, gheap_address, object_index] = data[i];
+        var gheap;
+        if (!(gheap_address in this._global_heaps)) {
+          gheap = new GlobalHeap(this.fh, gheap_address);
+          await gheap.ready;
+          this._global_heaps[gheap_address] = gheap;
+        } else {
+          gheap = this._global_heaps[gheap_address];
+        }
+        let vlen_data = gheap.objects.get(object_index);
+        if (dtype_class == "VLEN_STRING") {
+          let character_set = dtype[2];
+          const encoding = character_set == 0 ? "ascii" : "utf-8";
+          const decoder = new TextDecoder(encoding);
+          data[i] = decoder.decode(vlen_data);
+        }
+      }
+    }
+    return data;
+  }
+  async _get_chunk_params() {
+    if (this._chunk_params_set) {
+      return;
+    }
+    this._chunk_params_set = true;
+    var msg = this.find_msg_type(DATA_STORAGE_MSG_TYPE)[0];
+    var offset = msg.get("offset_to_message");
+    var [version, dims, layout_class, property_offset] = await this._get_data_message_properties(offset);
+    if (layout_class != 2) {
+      return;
+    }
+    var data_offset;
+    if (version == 1 || version == 2) {
+      var address = (await struct.unpack_from_async("<Q", this.fh, property_offset))[0];
+      data_offset = property_offset + struct.calcsize("<Q");
+    } else if (version == 3) {
+      var [dims, address] = await struct.unpack_from_async("<BQ", this.fh, property_offset);
+      data_offset = property_offset + struct.calcsize("<BQ");
+    }
+    assert(version >= 1 && version <= 3);
+    var fmt = "<" + (dims - 1).toFixed() + "I";
+    var chunk_shape = await struct.unpack_from_async(fmt, this.fh, data_offset);
+    this._chunks = chunk_shape;
+    this._chunk_dims = dims;
+    this._chunk_address = address;
+    return;
+  }
+};
+async function determine_data_shape(buf, offset) {
+  let version = (await struct.unpack_from_async("<B", buf, offset))[0];
+  var header;
+  if (version == 1) {
+    header = await _unpack_struct_from_async(DATASPACE_MSG_HEADER_V1, buf, offset);
+    assert(header.get("version") == 1);
+    offset += DATASPACE_MSG_HEADER_V1_SIZE;
+  } else if (version == 2) {
+    header = await _unpack_struct_from_async(DATASPACE_MSG_HEADER_V2, buf, offset);
+    assert(header.get("version") == 2);
+    offset += DATASPACE_MSG_HEADER_V2_SIZE;
+  } else {
+    throw "InvalidHDF5File('unknown dataspace message version')";
+  }
+  let ndims = header.get("dimensionality");
+  let dim_sizes = await struct.unpack_from_async("<" + (ndims * 2).toFixed() + "I", buf, offset);
+  return dim_sizes.filter(function(s, i) {
+    return i % 2 == 0;
+  });
+}
+var UNDEFINED_ADDRESS2 = struct.unpack_from("<Q", new Uint8Array([255, 255, 255, 255, 255, 255, 255, 255]).buffer);
+var GLOBAL_HEAP_ID = /* @__PURE__ */ new Map([
+  ["collection_address", "Q"],
+  ["object_index", "I"]
+]);
+_structure_size(GLOBAL_HEAP_ID);
+var ATTR_MSG_HEADER_V1 = /* @__PURE__ */ new Map([
+  ["version", "B"],
+  ["reserved", "B"],
+  ["name_size", "H"],
+  ["datatype_size", "H"],
+  ["dataspace_size", "H"]
+]);
+var ATTR_MSG_HEADER_V1_SIZE = _structure_size(ATTR_MSG_HEADER_V1);
+var ATTR_MSG_HEADER_V3 = /* @__PURE__ */ new Map([
+  ["version", "B"],
+  ["flags", "B"],
+  ["name_size", "H"],
+  ["datatype_size", "H"],
+  ["dataspace_size", "H"],
+  ["character_set_encoding", "B"]
+]);
+var ATTR_MSG_HEADER_V3_SIZE = _structure_size(ATTR_MSG_HEADER_V3);
+var OBJECT_HEADER_V1 = /* @__PURE__ */ new Map([
+  ["version", "B"],
+  ["reserved", "B"],
+  ["total_header_messages", "H"],
+  ["object_reference_count", "I"],
+  ["object_header_size", "I"],
+  ["padding", "I"]
+]);
+var OBJECT_HEADER_V2 = /* @__PURE__ */ new Map([
+  ["signature", "4s"],
+  ["version", "B"],
+  ["flags", "B"]
+]);
+var DATASPACE_MSG_HEADER_V1 = /* @__PURE__ */ new Map([
+  ["version", "B"],
+  ["dimensionality", "B"],
+  ["flags", "B"],
+  ["reserved_0", "B"],
+  ["reserved_1", "I"]
+]);
+var DATASPACE_MSG_HEADER_V1_SIZE = _structure_size(DATASPACE_MSG_HEADER_V1);
+var DATASPACE_MSG_HEADER_V2 = /* @__PURE__ */ new Map([
+  ["version", "B"],
+  ["dimensionality", "B"],
+  ["flags", "B"],
+  ["type", "B"]
+]);
+var DATASPACE_MSG_HEADER_V2_SIZE = _structure_size(DATASPACE_MSG_HEADER_V2);
+var HEADER_MSG_INFO_V1 = /* @__PURE__ */ new Map([
+  ["type", "H"],
+  ["size", "H"],
+  ["flags", "B"],
+  ["reserved", "3s"]
+]);
+var HEADER_MSG_INFO_V1_SIZE = _structure_size(HEADER_MSG_INFO_V1);
+var HEADER_MSG_INFO_V2 = /* @__PURE__ */ new Map([
+  ["type", "B"],
+  ["size", "H"],
+  ["flags", "B"]
+]);
+var HEADER_MSG_INFO_V2_SIZE = _structure_size(HEADER_MSG_INFO_V2);
+var SYMBOL_TABLE_MSG = /* @__PURE__ */ new Map([
+  ["btree_address", "Q"],
+  ["heap_address", "Q"]
+]);
+var LINK_INFO_MSG1 = /* @__PURE__ */ new Map([
+  ["heap_address", "Q"],
+  ["name_btree_address", "Q"]
+]);
+var LINK_INFO_MSG2 = /* @__PURE__ */ new Map([
+  ["heap_address", "Q"],
+  ["name_btree_address", "Q"],
+  ["order_btree_address", "Q"]
+]);
+var FILLVAL_MSG_V1V2 = /* @__PURE__ */ new Map([
+  ["version", "B"],
+  ["space_allocation_time", "B"],
+  ["fillvalue_write_time", "B"],
+  ["fillvalue_defined", "B"]
+]);
+var FILLVAL_MSG_V1V2_SIZE = _structure_size(FILLVAL_MSG_V1V2);
+var FILLVAL_MSG_V3 = /* @__PURE__ */ new Map([
+  ["version", "B"],
+  ["flags", "B"]
+]);
+var FILLVAL_MSG_V3_SIZE = _structure_size(FILLVAL_MSG_V3);
+var FILTER_PIPELINE_DESCR_V1 = /* @__PURE__ */ new Map([
+  ["filter_id", "H"],
+  ["name_length", "H"],
+  ["flags", "H"],
+  ["client_data_values", "H"]
+]);
+var FILTER_PIPELINE_DESCR_V1_SIZE = _structure_size(FILTER_PIPELINE_DESCR_V1);
+var DATASPACE_MSG_TYPE = 1;
+var LINK_INFO_MSG_TYPE = 2;
+var DATATYPE_MSG_TYPE = 3;
+var FILLVALUE_MSG_TYPE = 5;
+var LINK_MSG_TYPE = 6;
+var DATA_STORAGE_MSG_TYPE = 8;
+var DATA_STORAGE_FILTER_PIPELINE_MSG_TYPE = 11;
+var ATTRIBUTE_MSG_TYPE = 12;
+var OBJECT_CONTINUATION_MSG_TYPE = 16;
+var SYMBOL_TABLE_MSG_TYPE = 17;
+
+// esm/high-level.js
+var Group = class {
+  constructor(name, parent) {
+    if (parent == null) {
+      this.parent = this;
+      this.file = this;
+    } else {
+      this.parent = parent;
+      this.file = parent.file;
+    }
+    this.name = name;
+  }
+  async init(dataobjects) {
+    const index = this.file.index;
+    if (index && this.name in index) {
+      this._links = index[this.name];
+    } else {
+      this._links = await dataobjects.get_links();
+    }
+    this._dataobjects = dataobjects;
+    this._attrs = null;
+    this._keys = null;
+  }
+  get keys() {
+    if (this._keys == null) {
+      this._keys = Object.keys(this._links);
+    }
+    return this._keys.slice();
+  }
+  get values() {
+    return this.keys.map((k) => this.get(k));
+  }
+  length() {
+    return this.keys.length;
+  }
+  _dereference(ref) {
+    if (!ref) {
+      throw "cannot deference null reference";
+    }
+    let obj = this.file._get_object_by_address(ref);
+    if (obj == null) {
+      throw "reference not found in file";
+    }
+    return obj;
+  }
+  async get(y) {
+    if (typeof y == "number") {
+      return this._dereference(y);
+    }
+    var path = normpath(y);
+    if (path == "/") {
+      return this.file;
+    }
+    if (path == ".") {
+      return this;
+    }
+    if (/^\//.test(path)) {
+      return this.file.get(path.slice(1));
+    }
+    if (posix_dirname(path) != "") {
+      var [next_obj, additional_obj] = path.split(/\/(.*)/);
+    } else {
+      var next_obj = path;
+      var additional_obj = ".";
+    }
+    if (!(next_obj in this._links)) {
+      throw next_obj + " not found in group";
+    }
+    var obj_name = normpath(this.name + "/" + next_obj);
+    let link_target = this._links[next_obj];
+    if (typeof link_target == "string") {
+      try {
+        return this.get(link_target);
+      } catch (error) {
+        return null;
+      }
+    }
+    var dataobjs = new DataObjects(this.file._fh, link_target);
+    await dataobjs.ready;
+    if (dataobjs.is_dataset) {
+      if (additional_obj != ".") {
+        throw obj_name + " is a dataset, not a group";
+      }
+      return new Dataset(obj_name, dataobjs, this);
+    } else {
+      var new_group = new Group(obj_name, this);
+      await new_group.init(dataobjs);
+      return new_group.get(additional_obj);
+    }
+  }
+  visit(func) {
+    return this.visititems((name, obj) => func(name));
+  }
+  visititems(func) {
+    var root_name_length = this.name.length;
+    if (!/\/$/.test(this.name)) {
+      root_name_length += 1;
+    }
+    var queue = this.values.slice();
+    while (queue) {
+      let obj = queue.shift();
+      if (queue.length == 1)
+        console.log(obj);
+      let name = obj.name.slice(root_name_length);
+      let ret = func(name, obj);
+      if (ret != null) {
+        return ret;
+      }
+      if (obj instanceof Group) {
+        queue = queue.concat(obj.values);
+      }
+    }
+    return null;
+  }
+  get attrs() {
+    if (this._attrs == null) {
+      this._attrs = this._dataobjects.get_attributes();
+    }
+    return this._attrs;
+  }
+};
+var File$1 = class extends Group {
+  constructor(fh, filename, options) {
+    super("/", null);
+    this.ready = this.init(fh, filename, options);
+  }
+  async init(fh, filename, options) {
+    var superblock = new SuperBlock(fh, 0);
+    await superblock.ready;
+    var offset = await superblock.get_offset_to_dataobjects();
+    var dataobjects = new DataObjects(fh, offset);
+    await dataobjects.ready;
+    this.parent = this;
+    this.file = this;
+    this.name = "/";
+    this._dataobjects = dataobjects;
+    this._attrs = null;
+    this._keys = null;
+    this._fh = fh;
+    this.filename = filename || "";
+    this.mode = "r";
+    this.userblock_size = 0;
+    if (options && options.index) {
+      this.index = options.index;
+    } else {
+      let index_offset;
+      if (options && options.indexOffset) {
+        index_offset = options.indexOffset;
+      } else {
+        const attrs = await this.attrs;
+        if (attrs.hasOwnProperty("_index_offset")) {
+          index_offset = attrs["_index_offset"];
+        } else {
+          const indexName = this.indexName || "_index";
+          const index_link = await dataobjects.find_link(indexName);
+          if (index_link) {
+            index_offset = index_link[1];
+          }
+        }
+      }
+      if (index_offset) {
+        try {
+          const dataobject = new DataObjects(fh, index_offset);
+          await dataobject.ready;
+          const comp_index_data = await dataobject.get_data();
+          const inflated = ungzip_1(comp_index_data);
+          const json = new TextDecoder().decode(inflated);
+          this.index = JSON.parse(json);
+        } catch (e) {
+          console.error(`Error loading index by offset ${e}`);
+        }
+      }
+    }
+    if (this.index && this.name in this.index) {
+      this._links = this.index[this.name];
+    } else {
+      this._links = await dataobjects.get_links();
+    }
+  }
+  _get_object_by_address(obj_addr) {
+    if (this._dataobjects.offset == obj_addr) {
+      return this;
+    }
+    return this.visititems((y) => {
+      y._dataobjects.offset == obj_addr ? y : null;
+    });
+  }
+};
+var Dataset = class extends Array {
+  constructor(name, dataobjects, parent) {
+    super();
+    this.parent = parent;
+    this.file = parent.file;
+    this.name = name;
+    this._dataobjects = dataobjects;
+    this._attrs = null;
+    this._astype = null;
+  }
+  get value() {
+    var data = this._dataobjects.get_data();
+    if (this._astype == null) {
+      return this.getValue(data);
+    }
+    return data.astype(this._astype);
+  }
+  get shape() {
+    return this._dataobjects.shape;
+  }
+  get attrs() {
+    return this._dataobjects.get_attributes();
+  }
+  get dtype() {
+    return this._dataobjects.dtype;
+  }
+  get fillvalue() {
+    return this._dataobjects.get_fillvalue();
+  }
+  async to_array() {
+    const value = await this.value;
+    const shape = await this.shape;
+    return create_nested_array(value, shape);
+  }
+  async getValue(data) {
+    const dtype = await this.dtype;
+    if (dtype.startsWith("S")) {
+      return (await data).map((s) => s.substr(0, s.indexOf("\0")));
+    } else {
+      return data;
+    }
+  }
+};
+function posix_dirname(p) {
+  let sep = "/";
+  let i = p.lastIndexOf(sep) + 1;
+  let head = p.slice(0, i);
+  let all_sep = new RegExp("^" + sep + "+$");
+  let end_sep = new RegExp(sep + "$");
+  if (head && !all_sep.test(head)) {
+    head = head.replace(end_sep, "");
+  }
+  return head;
+}
+function normpath(path) {
+  return path.replace(/\/(\/)+/g, "/");
+}
+function create_nested_array(value, shape) {
+  const total_length = value.length;
+  const dims_product = shape.reduce((previous, current) => previous * current, 1);
+  if (total_length !== dims_product) {
+    console.warn(`shape product: ${dims_product} does not match length of flattened array: ${total_length}`);
+  }
+  let output = value;
+  const subdims = shape.slice(1).reverse();
+  for (let dim of subdims) {
+    const new_output = [];
+    const { length } = output;
+    let cursor = 0;
+    while (cursor < length) {
+      new_output.push(output.slice(cursor, cursor += dim));
+    }
+    output = new_output;
+  }
+  return output;
+}
+/*! pako 2.0.4 https://github.com/nodeca/pako @license (MIT AND Zlib) */
+
+async function openH5File(options) {
+
+    // Some clients (notably igv-webapp) pass a File reference in the url field.  Fix this
+    if(options.url && isBlobLike(options.url)) {
+        options.file = options.url;
+        options.url = undefined;
+    }
+
+    const isRemote = options.url !== undefined;
+    let fileReader = options.reader ? options.reader : getReaderFor(options);
+
+    // Set default options appropriate for spacewalk
+    const fetchSize = options.fetchSize || 2000;
+    const maxSize = options.maxSize || 200000;
+
+    if (isRemote) {
+        fileReader = new BufferedFile({file: fileReader, fetchSize, maxSize});
+    }
+    const asyncBuffer = new AsyncBuffer(fileReader);
+
+    // Optional external index -- this is not common
+    const index = await readExternalIndex(options);
+    const indexOffset = options.indexOffset;
+
+    // Create HDF5 file
+    const filename = getFilenameFor(options);
+    const hdfFile = new File$1(asyncBuffer, filename, {index, indexOffset});
+    await hdfFile.ready;
+    return hdfFile
+}
+
+async function readExternalIndex(options) {
+
+    let indexReader;
+    if(options.indexReader) {
+        indexReader = options.indexReader;
+    }
+    else if(options.index) {
+        return options.index
+    } else if (options.indexURL) {
+        indexReader = new RemoteFile({url: options.indexURL});
+    } else if (options.indexPath) {
+        indexReader = new NodeLocalFile({path: options.indexPath});
+    } else if (options.indexFile) {
+        indexReader = new BlobFile({file: options.indexFile});
+    }
+    if (indexReader) {
+        const indexFileContents = await indexReader.read();
+        const indexFileJson = new TextDecoder().decode(indexFileContents);
+        return JSON.parse(indexFileJson)
+    } else {
+        return undefined
+    }
+}
+
+
+function getReaderFor(options) {
+    if (options.url) { // An absolute or relative URL
+        return new RemoteFile(options)
+    } else if (options.path) { // A file path
+        return new NodeLocalFile(options)
+    } else if (options.file) { // A Browser file blob
+        return new BlobFile(options.file)
+    } else {
+        throw Error("One of 'url', 'path (node only)', or 'file (browser only)' must be specified")
+    }
+}
+
+function getFilenameFor(options) {
+    if (options.url) {
+        return getFilename(options.url)
+    } else if (options.path) {
+        return getFilename(options.path)
+    } else if (options.file) {
+        return options.file.name
+    }
+}
+
+/**
+ * Wraps an io.Reader in an interface jsfive-async expects*
+ */
+class AsyncBuffer {
+    constructor(fileReader) {
+        this.fileReader = fileReader;
+    }
+
+    async slice(start, end) {
+        return this.fileReader.read(start, end - start)
+    }
+}
+
+function getFilename(pathOrURL) {
+    const idx = pathOrURL.lastIndexOf("/");
+    return idx > 0 ? pathOrURL.substring(idx + 1) : pathOrURL
+}
+
+function isBlobLike(obj) {
+    return typeof obj.slice === 'function' && typeof obj.arrayBuffer === 'function'
+}
+
+class HDF5Reader {
+    
+    constructor(h5_file, bin_size=100000){
+
+        this.h5_file = h5_file;
+        this.bin_size = bin_size;
+        this.h5_obj = undefined;
+    }
+    
+    async fetch(){
+
+        if(!this.h5_obj) {
+            this.h5_obj = await openH5File({
+                url: this.h5_file,
+                fetchSize: 1000000,
+                maxSize: 200000000
+            });
+        }
+        return this.h5_obj
+    }
+
+    async get_keys(){
+        /* returns a list of keys of the pytor file*/
+        let h5_obj = await this.fetch();
+
+        return h5_obj.keys
+    }
+
+    async get_rd_signal(bin_size=this.bin_size){
+
+        let h5_obj = await this.fetch();
+        let h5_obj_keys = h5_obj.keys;
+
+        // console.log(h5_obj_keys)
+        let signal_bin = new ParseSignals(h5_obj_keys);
+        let rd_bins = signal_bin.get_rd_bins();
+        let snp_bins = signal_bin.get_snp_bins();
+        this.available_bins = [...new Set(rd_bins, snp_bins)];
+
+        // let bin_size = this.bin_size
+        if(! this.available_bins.includes(bin_size)){
+            bin_size = this.available_bins.at(-1);    
+        }
+
+        const chr_ds = await h5_obj.get("rd_chromosomes");
+        await chr_ds.dtype;
+        let rd_chromosomes = await chr_ds.value;
+        //console.log(`get_rd_signal rd_chromosomes  ${Date.now() - t0}`)
+        //rd_chromosomes = fixString(rd_chromosomes)
+        let rd_flag = "";
+
+        // get rd stat
+        let rd_stat = await this.rd_stat(h5_obj, h5_obj_keys, bin_size);
+        
+        var wigFeatures = [];
+        var wigFeatures_gc = [];
+        var wigFeatures_rd_call_meanshift = [];
+        var wigFeatures_rd_call_combined = [];
+        var wigFeatures_baf1 = [];
+        var wigFeatures_baf2 = [];
+
+        for (let chrom of rd_chromosomes) {
+            // for normal rd signal
+            var signal_rd = `his_rd_p_${chrom}_${bin_size}${rd_flag}`;
+            let chr_wig = await this.get_chr_signal(h5_obj, h5_obj_keys, chrom, bin_size, signal_rd, rd_stat);
+            wigFeatures = wigFeatures.concat(chr_wig);
+            
+            // rd gc corrected
+            var signal_rd_gc = `his_rd_p_${chrom}_${bin_size}_GC`;
+            let chr_wig_gc = await this.get_chr_signal(h5_obj, h5_obj_keys, chrom, bin_size, signal_rd_gc, rd_stat);
+            wigFeatures_gc = wigFeatures_gc.concat(chr_wig_gc);
+
+            // rd call MeanShift
+            
+            let signal_rd_call = `his_rd_p_${chrom}_${bin_size}_partition_GC_merge`;
+            let chr_wig_rd_call_meanshift = await this.get_chr_signal(h5_obj, h5_obj_keys, chrom, bin_size, signal_rd_call, rd_stat);
+            wigFeatures_rd_call_meanshift = wigFeatures_rd_call_meanshift.concat(chr_wig_rd_call_meanshift);
+            
+            let chr_wig_rd_call = await this.rd_call_combined(h5_obj, h5_obj_keys, chrom, bin_size, rd_stat);
+            wigFeatures_rd_call_combined = wigFeatures_rd_call_combined.concat(chr_wig_rd_call);
+
+            // baf likelihood
+            let signal_baf_1 = `snp_likelihood_${chrom}_${bin_size}_mask`;
+            let chr_wig_bafs = await this.get_baf_signals(h5_obj, h5_obj_keys, chrom, bin_size, signal_baf_1);
+
+            // let signal_baf_1 = `snp_i1_${chrom}_${bin_size}_mask`
+            // let chr_wig_bafs = await this.get_baf_signals_v2(h5_obj, h5_obj_keys, chrom, bin_size, signal_baf_1)
+
+            wigFeatures_baf1 = wigFeatures_baf1.concat(chr_wig_bafs[0]);
+            wigFeatures_baf2 = wigFeatures_baf2.concat(chr_wig_bafs[1]);
+            // this.rd_call_combined(h5_obj, h5_obj_keys, chrom, bin_size, rd_stat)
+        }
+        this.callers = [];
+        if (wigFeatures_rd_call_combined.length != 0){
+            this.callers.push('ReadDepth');
+        }
+        if (wigFeatures_rd_call_combined.length != 0){
+            this.callers.push('2D');
+        }
+
+        var obj = {};
+        var signal_obj = {
+            "RD_Raw": wigFeatures,
+            "RD_Raw_gc_coor" : wigFeatures_gc,
+            "ReadDepth": wigFeatures_rd_call_meanshift,
+            "2D": wigFeatures_rd_call_combined,
+            "BAF1": wigFeatures_baf1,
+            "BAF2": wigFeatures_baf2
+        };
+        obj[bin_size] = signal_obj;
+        return obj
+    }
+
+    decode_segments(segments_arr){
+        let max = 2 ** 32 - 1;
+        let segments = [];
+        let l = [];
+        for (let x of segments_arr){
+            if(x == max){
+                segments.push(l);
+                l = [];
+            } else {
+                l.push(x);
+            }
+        }
+        return segments
+    }
+
+   async  rd_call_combined(h5_obj, h5_obj_keys, chrom, bin_size, rd_stat){
+        let chr_wig = [];
+        
+        let segments;
+        let mosaic_call_segments = `his_rd_p_${chrom}_${bin_size}_partition_GC_mosaic_segments_2d`;
+        if (h5_obj_keys.includes(mosaic_call_segments)){
+            const chrom_dataset = await h5_obj.get(mosaic_call_segments);
+            let chrom_data = await chrom_dataset.value;
+            //console.log(`rd_call_combined ${mosaic_call_segments}  ${Date.now() - t0}`)
+            segments = this.decode_segments(chrom_data);
+            
+        }
+
+        let mosaic_calls = `his_rd_p_${chrom}_${bin_size}_partition_GC_mosaic_call_2d`;
+        if (h5_obj_keys.includes(mosaic_calls)){
+            const segments_call_dataset = await h5_obj.get(mosaic_calls);
+            let segments_call = await segments_call_dataset.to_array(); //create_nested_array(value, shape)
+            segments.forEach((ind_segment, segment_idx) => {
+                ind_segment.forEach((bin_value, bin_idx) =>{
+                    chr_wig.push({chr:chrom, start: bin_value*bin_size, end: (bin_value+1) * bin_size, value: (segments_call[0][segment_idx]/rd_stat[4]) *2});
+                });
+            });
+        }
+
+        return chr_wig
+        
+    }
+
+   async rd_stat(h5_obj, h5_obj_keys, bin_size){
+        /* 
+        returns a list for rd statistics information 
+        paramter
+        ---------
+        h5_obj: cnvpytor read object
+        h5_obj_keys: a list of available signal names
+        bin_size: bin size
+        
+        */
+        
+        let rd_stat_signal =  `rd_stat_${bin_size}_auto`;
+        let rd_stat;
+        if (h5_obj_keys.includes(rd_stat_signal)){
+            const rd_stat_dataset = await h5_obj.get(rd_stat_signal);
+            rd_stat = await rd_stat_dataset.value;
+            //console.log(`rd_stat_signal ${rd_stat_signal}  ${Date.now() - t0}`)
+        }
+        return rd_stat
+    }
+
+    
+    async get_chr_signal(h5_obj, h5_obj_keys, chrom, bin_size, signal_name, rd_stat){
+        /* return a list of dictionary for a chromosome */
+        let chr_wig = [];
+        
+        if (h5_obj_keys.includes(signal_name)){
+            const chrom_dataset = await h5_obj.get(signal_name);
+            let chrom_data = await chrom_dataset.value;
+            //console.log(`chr_signal ${signal_name}  ${Date.now() - t0}`)
+            chrom_data.forEach((bin_value, bin_idx) => {
+                chr_wig.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: (bin_value/rd_stat[4]) *2});
+            });
+        }
+        return chr_wig
+    }
+
+    async get_baf_signals(h5_obj, h5_obj_keys, chrom, bin_size, signal_name){
+        /* return two list of dictionary*/
+        let chr_wig_1 = [];
+        let chr_wig_2 = [];
+        if (h5_obj_keys.includes(signal_name)){
+            let chrom_dataset = await h5_obj.get(signal_name);
+            let chrom_data = await chrom_dataset.to_array(); //create_nested_array(value, shape)
+            chrom_data.forEach((bin_value, bin_idx) => {
+                let max_value =  Math.max(...bin_value);
+                const res = bin_value.indexOf(max_value);
+                let lh = Math.max(res / 200, 1 - res / 200);
+                chr_wig_1.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: -2 * lh});
+                if(lh != 0.5){
+                    chr_wig_2.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: -2 *(1-lh)});
+                }
+            });
+        }
+        return [chr_wig_1, chr_wig_2]
+    }
+
+    async get_baf_signals_v2(h5_obj, h5_obj_keys, chrom, bin_size, signal_name){
+        
+        /* return two list of dictionary*/
+        let chr_wig_1 = [];
+        let chr_wig_2 = [];
+        if (h5_obj_keys.includes(signal_name)){
+            let chrom_dataset = await h5_obj.get(signal_name);
+            let chrom_data = await chrom_dataset.to_array(); //create_nested_array(value, shape)
+            chrom_data.forEach((lh, bin_idx) => {
+                if (!isNaN(lh)){
+                    chr_wig_1.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: -2 * ( 0.5 - lh )});
+                    if(lh != 0.5){
+                        chr_wig_2.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: -2 * ( 0.5 + lh )});
+                    }
+                }
+            });
+        }
+        console.log(chrom, chr_wig_1, chr_wig_2);
+        return [chr_wig_1, chr_wig_2]
+
+    }
+}
+
+class ParseSignals{
+
+    constructor(signals){
+        /*
+        Parse a signal names
+
+        parameter
+        ---------
+        signals: List of keys in pytor files
+        */
+        this.signals = signals;
+    }
+
+    get_rd_bins(){
+        /* return list of rd bins */
+        let rd_keys = [];
+        this.signals.forEach( val => {
+            let match = val.match(/^his_rd_p_(.*)_(\d+)$/);
+            if(match){
+                rd_keys.push({chr:match[1], bin_size:match[2]});
+            }});
+        const rd_bins = [...new Set(rd_keys.map(item => Number(item.bin_size)))];
+        return rd_bins
+    }
+
+    get_snp_bins(){
+        /* return list of snp bins */
+        let slected_signals = [];
+        this.signals.forEach( val => {
+            let match = val.match(/^snp_likelihood_(.*)_(\d+)_mask$/);
+            if(match){
+                slected_signals.push({chr:match[1], bin_size:match[2]});
+            }});
+        const bins = [...new Set(slected_signals.map(item => Number(item.bin_size)))];
+        return bins
+    }
+}
+
+class GetFit {
+  constructor(allBins) {
+      this.allBins = allBins;
+  }
+  getValues() {
+      const bins = Object.values(this.allBins).reduce(
+          (binResult, bin) => { return binResult.concat(bin.filter(a => a.binScore > 0).map(a => a.binScore)) }, []);
+      return bins
+  }
+  getMean(data) {
+      return (data.reduce(function (a, b) { return a + b; }) / data.length);
+  }
+  fit_data() {
+      let rd_list = this.getValues();
+      let distParmas = getDistParams(rd_list);
+      return distParmas
+  }
+
+  histogram(data, bins) {
+      const step = bins[1] - bins[0];
+      const hist_bins = [];
+
+      data.forEach((value, index) => {
+          bins.forEach((bin_value, bin_index) => {
+              if (!hist_bins[bin_value]) {
+                  hist_bins[bin_value] = { count: 0 };
+              }
+              if (bin_value <= value && value < bin_value + step) {
+                  hist_bins[bin_value].count++;
+                  return false;
+              }
+          });
+      });
+      const dist_p = [];
+      hist_bins.forEach((bin, index) => { dist_p.push(bin.count); });
+      return dist_p
+  }
+
+}
+
+function range_function(start, stop, step) {
+  const data_array = Array(Math.ceil((stop - start) / step))
+    .fill(start)
+    .map((x, y) => x + y * step);
+  return data_array;
+}
+
+function filterOutliers(someArray) {
+
+  if (someArray.length < 4)
+    return someArray;
+
+  let values, q1, q3, iqr, maxValue, minValue;
+
+  values = someArray.slice().sort((a, b) => a - b); //copy array fast and sort
+
+  if ((values.length / 4) % 1 === 0) { //find quartiles
+    q1 = 1 / 2 * (values[(values.length / 4)] + values[(values.length / 4) + 1]);
+    q3 = 1 / 2 * (values[(values.length * (3 / 4))] + values[(values.length * (3 / 4)) + 1]);
+  } else {
+    q1 = values[Math.floor(values.length / 4 + 1)];
+    q3 = values[Math.ceil(values.length * (3 / 4) + 1)];
+  }
+
+  iqr = q3 - q1;
+  maxValue = q3 + iqr * 1.5;
+  minValue = q1 - iqr * 1.5;
+
+  return values.filter((x) => (x >= minValue) && (x <= maxValue));
+}
+
+function getDistParams(bins) {
+  let filteredBins = filterOutliers(bins);
+  const n = filteredBins.length;
+  const mean = filteredBins.reduce((a, b) => a + b) / n;
+  const std = Math.sqrt(filteredBins.map(x => Math.pow(x - mean, 2)).reduce((a, b) => a + b) / n);
+  return [mean, std]
+}
+
+function linspace(a, b, n) {
+  if (typeof n === "undefined") n = Math.max(Math.round(b - a) + 1, 1);
+  if (n < 2) {
+      return n === 1 ? [a] : [];
+  }
+  var ret = Array(n);
+  n--;
+  for (let i = n; i >= 0; i--) {
+      ret[i] = (i * b + (n - i) * a) / n;
+  }
+  return ret;
+}
+
+var g_utils = { range_function, getDistParams, linspace, GetFit};
+
+/** 
+* Evaluates the cumulative distribution function (CDF) for a Student's t distribution with degrees of freedom `v` at a value `t`.
+*
+* @params {number} t - value for the t test
+* @params {PositiveNumber} v - degree of freedom
+* @returns {Probability} evaluated CDF
+*/
+function TdistributionCDF(t, v){
+    if (isNaN( t ) || isNaN( v ) || v <= 0.0) {
+		return NaN;
+	}
+	if ( t === 0.0 ) {
+		return 0.5;
+	}
+    return 1/2 + (1/2 * (incompbeta(1/2*v, 1/2, 1) - incompbeta(1/2*v, 1/2, v/(v+t*t)))) * Math.sign( t)
+
+}
+
+
+/** 
+* incompbeta(a,b,x) evaluates incomplete beta function, here a, b > 0 and 0 <= x <= 1. This function requires contfractbeta(a,b,x, ITMAX = 200) 
+*  code translated from  https://malishoaib.wordpress.com/2014/04/15/the-beautiful-beta-functions-in-raw-python/
+*
+* @params
+* @params
+* @params
+* @returns 
+*/
+function incompbeta(a, b, x){
+     
+    if(x == 0){
+        return 0;
+    }
+    else if (x == 1){
+        return 1;
+    }else
+    {
+        let lbeta = lgamma(a+b) - lgamma(a) - lgamma(b) + a * Math.log(x) + b * Math.log(1-x);
+        if (x < (a+1) / (a+b+2)){
+            return Math.exp(lbeta) * contfractbeta(a, b, x) / a;
+        }
+        else {
+            return 1 - Math.exp(lbeta) * contfractbeta(b, a, 1-x) / b;
+        }
+    }
+}
+
+/**
+ * contfractbeta() evaluates the continued fraction form of the incomplete Beta function; incompbeta().  
+ *   (Code translated from: Numerical Recipes in C.)
+ * 
+ * @param {*} a 
+ * @param {*} b 
+ * @param {*} x 
+ * @param {*} ITMAX 
+ * @returns 
+ */
+function contfractbeta(a,b,x, ITMAX = 1000){
+     
+    let EPS = 3.0e-7;
+    let az = 1.0;
+    let am = 1.0;
+    let bm = 1.0;
+    let qab = a + b;
+    let qap = a + 1.0;
+    let qam = a-1.0;
+    let bz = 1.0 - qab*x/qap;
+     
+    //for i in range(ITMAX):
+    for(let i =0; i<= ITMAX; i++){
+        let em = parseFloat(i+1);
+        let tem = em + em;
+        let d = em*(b-em)*x/((qam+tem)*(a+tem));
+        let ap = az + d*am;
+        let bp = bz+d*bm;
+        d = -(a+em)*(qab+em)*x/((qap+tem)*(a+tem));
+        let app = ap+d*az;
+        let bpp = bp+d*bz;
+        let aold = az;
+        am = ap/bpp;
+        bm = bp/bpp;
+        az = app/bpp;
+        bz = 1.0;
+        if (Math.abs(az-aold)<(EPS * Math.abs(az))){
+            return az
+        }
+    }
+}
+
+/**
+ * Evaluates factorial of a number
+ * 
+ * @param {Number} xf - Integer number 
+ * @returns factorial of the number
+ */
+function factorial(xf) {
+    if ((xf == 0) || (xf == 1)) return 1;
+    else {
+        let result = (xf * factorial(xf - 1));
+        return result
+    }
+}
+
+/**
+ * Evalues factorial for an integer or fraction using either either factorial or gamma function
+ * 
+ * @param {Number} a - integar or fraction number
+ * @returns value of a gamma function
+ */
+function gamma(a){
+    let gamma;
+    
+    var qc = [75122.6331530, 80916.6278952, 36308.2951477, 8687.24529705, 1168.92649479, 83.8676043424, 2.50662827511];
+    
+    var sum1 = 0;
+    var prod1 = 1;
+    if (a == 0) { 
+        gamma = 1e99; 
+    }else {
+        if ((a % 1) == 0) {//if integer
+            gamma = factorial(a - 1);
+        }
+        else { //not integer
+            for (let j = 0; j < qc.length; j++) {
+                sum1 = sum1 + qc[j] * Math.pow(a, j);
+                prod1 = prod1 * (a + j);
+            }
+            gamma = (sum1 * Math.pow((a + 5.5), (a + 0.5))) * Math.exp(-(a + 5.5)) / prod1;
+        }
+    }
+    
+    return gamma
+}
+
+/**
+ * 
+ * @param {Number} xg  - integar or fraction number
+ * @returns natural log of gamma function
+ */
+
+function lgamma(xg){
+    return Math.log(gamma(xg))
+}
+
+function t_test_1_sample$1(mean, m, s, n) {
+    if (s == 0) s = 1;
+    var t = ((mean - m) / s) * Math.sqrt(n);
+    var p = 1.0 - TdistributionCDF(Math.abs(t), (n - 1));
+    return p
+}
+
+function t_test_2_samples$1(m1, s1, n1, m2, s2, n2) {
+    if (s1 == 0) s1 = 1;
+    if (s2 == 0) s2 = 1;
+    var t = (m1 - m2) / Math.sqrt(s1 ** 2 / n1 + s2 ** 2 / n2);
+    var df = ((s1 ** 2 / n1 + s2 ** 2 / n2) ** 2 * (n1 - 1) * (n2 - 1)) /
+        ((s1 ** 4 * (n2 - 1)) / n1 ** 2 + (s2 ** 4 * (n1 - 1)) / n2 ** 2);
+
+    var p = 1.0 - TdistributionCDF(Math.abs(t), parseInt(df + 0.5));
+
+    return p
+}
+
+var t_dist = {TdistributionCDF, gamma, t_test_1_sample: t_test_1_sample$1, t_test_2_samples: t_test_2_samples$1};
+
+class CombinedCaller{
+    constructor(wigFeatures, binSize) {
+        this.wigFeatures = wigFeatures;
+        this.binSize = binSize;
+        // let fit_obj = this.get_fit()
+        // this.globalMean = fit_obj.globalMean
+        // this.globalStd = fit_obj.globalStd
+    }
+    get_fit(){
+        var fit_info = new g_utils.GetFit(this.wigFeatures);
+        var [globalMean, globalStd] = fit_info.fit_data();
+
+        return {globalMean:globalMean, globalStd:globalStd}
+       
+    }
+    async call_2d(omin=null, mcount=null, event_type="both", max_distance=0.1, baf_threshold=0, max_copy_number=10, min_cell_fraction=0.0){
+        
+        let fit_obj = this.get_fit();
+        this.globalMean = fit_obj.globalMean;
+        this.globalStd = fit_obj.globalStd;
+        
+        let overlap_min = omin==null ?  0.05 * this.binSize / 3e9: omin ;
+        let min_count = mcount == null ? parseInt(this.binSize / 10000) : mcount ;
+
+        let gstat_rd0 = [];
+        let gstat_rd_all = [];
+        let gstat_rd = [];
+        let gstat_error = [];
+        let gstat_lh = [];
+        let gstat_n = [];
+        
+        for (const [chr, wig] of Object.entries(this.wigFeatures)) {
+            let segments = [];
+            let levels = [];
+            let likelihoods = [];
+            
+            wig.forEach((bin, bin_idx) => {
+                if (bin.hets_count > 4 ){
+                    
+                    if( bin.dp_count > min_count ){
+                        segments.push([bin_idx]);
+                        levels.push(bin.binScore);
+                        likelihoods.push(bin.likelihood_score);
+                        delete bin.likelihood_score;
+                        
+                    }
+                }
+            });
+
+            let diff_level = [];
+            for(let i=1; i<levels.length; i++){
+                diff_level.push(Math.abs(levels[i] - levels[i-1]));
+            }
+            let min_flank = [0];
+            for(let i=1; i<diff_level.length; i++){
+                min_flank.push(Math.min(diff_level[i-1], diff_level[i]));    
+            }
+            min_flank.push(0);
+
+            let error  = levels.map((x, x_idx) => {return Math.sqrt(Math.sqrt(x) ** 2 + this.globalStd ** 2 + Math.pow(min_flank[x_idx]/2, 2));});
+            
+            let overlaps = [];
+            
+            for(let i=0; i< segments.length-1; i++){
+                
+                let lh_overlap = 0;
+                try{
+                    lh_overlap = likelihood_overlap(likelihoods[i], likelihoods[i+1]);
+                }catch{
+                    console.log("Overlap failed: ", i, likelihoods[i], segments[i+1], likelihoods[i+1]);
+                }
+                
+                let rd_overlap = normal_overlap_approx(levels[i], error[i], levels[i+1], error[i+1]);
+                overlaps.push(rd_overlap * lh_overlap);
+                
+            }
+            
+            while(overlaps.length >0) {
+                overlaps = overlaps.filter(num => typeof num === "number");
+                
+                let max_overlap = arrayMax(overlaps);
+                if(isNaN(max_overlap)){
+                    console.log('NaN value', overlaps);
+                }
+                if(max_overlap < overlap_min){
+                    // console.log("maxoverlap ",max_overlap,  "is smaller than overlap min")
+                    break
+                }
+                let i = overlaps.indexOf(max_overlap);
+                
+                let merge_level = normal_merge(levels[i], error[i], levels[i + 1], error[i + 1]);
+                
+                let nlh;
+                let nlh_sum;
+                try{
+                    nlh = likelihoods[i].map((l_value, l_idx) => { return l_value * likelihoods[i+1][l_idx]});
+                
+                    nlh_sum = nlh.reduce((a, c_value) => {return a + c_value});
+                    
+                }catch{
+                    console.log(likelihoods);
+                    console.log('max_overlap:', max_overlap, i, overlaps.length);
+                    console.log('likelihood: ', i ,likelihoods[i], likelihoods[i+1]);
+                    console.log('nlh: ', nlh_sum);
+                }
+                // nlh_sum = nlh.reduce((a, c_value) => {return a + c_value});
+
+                levels[i] = merge_level.nl;
+                error[i] = merge_level.ne;
+                
+                likelihoods[i] = nlh.map(function(item) { return item/nlh_sum } );
+                
+                segments[i].push(...segments[i+1]);
+
+                levels.splice(i + 1, 1);
+                error.splice(i + 1, 1);
+                segments.splice(i + 1, 1);
+                likelihoods.splice(i + 1, 1);
+                overlaps.splice(i, 1);
+                
+                if(i < overlaps.length){
+                    
+                    let rd_overlap = normal_overlap_approx(levels[i], error[i], levels[i+1], error[i+1]);
+                    let new_overlap = rd_overlap * likelihood_overlap(likelihoods[i], likelihoods[i + 1]);
+                    
+                    overlaps[i] = new_overlap;
+                }
+                if(i > 0){
+                    let new_overlap = normal_overlap_approx(levels[i - 1], error[i - 1], levels[i], error[i]) 
+                    * likelihood_overlap(likelihoods[i - 1], likelihoods[i]);
+                    overlaps[i - 1] = new_overlap;
+                }
+
+            }
+            let ons = -1;
+            while(true){
+                overlaps = [];
+                for(let i=0; i< levels.length; i++){
+                    for(let j=i; j<levels.length; j++){
+                        if(segments[j][0] - segments[i].at(-1) < max_distance * (segments[i].length + segments[j].length)){
+                            overlaps.push(normal_overlap_approx(levels[i], error[i], levels[j], error[j]) * likelihood_overlap(likelihoods[i], likelihoods[j]));
+                        }
+                    }
+                }
+                
+                if(overlaps.length == 0){
+                    break
+                }
+                let max_overlap = arrayMax(overlaps);
+                if(max_overlap < overlap_min){
+                    break
+                }
+                let i = 0; 
+                let j = 1;
+                while (i < segments.length - 1){
+                    let overlap_value = normal_overlap_approx(levels[i], error[i], levels[j], error[j]) * likelihood_overlap(likelihoods[i], likelihoods[j]);
+
+                    if((segments[j][0] - segments[i].at(-1)) < max_distance * (segments[i].length + segments[j].length) && overlap_value == max_overlap){
+                        let merge_level = normal_merge(levels[i], error[i], levels[i + 1], error[i + 1]);
+
+                        levels[i] = merge_level.nl;
+                        error[i] = merge_level.ne;
+                        let nlh = likelihoods[i].map((l_value, l_idx) => { return l_value * likelihoods[i+1][l_idx]});
+                        let nlh_sum = nlh.reduce((a, c_value) => {return a + c_value});
+                        likelihoods[i] = nlh.map(function(item) { return item/nlh_sum } );
+
+                        
+                        segments[i].push(...segments[i+1]);
+                        segments[i] = segments[i].sort((a,b) => a-b);
+
+                        levels.splice(j, 1);
+                        error.splice(j, 1);
+                        segments.splice(j, 1);
+                        likelihoods.splice(j, 1);
+                        
+                        if(j >= segments.length){
+                            i += 1;
+                            j = i + 1;
+                        }
+
+                    }else {
+                        j += 1;
+                        if(j >= segments.length){
+                            i += 1;
+                            j = i + 1;
+                        }
+                    }
+                }
+                if(ons == segments.length){
+                    break
+                }
+                ons = segments.length;
+            }
+            // console.log('final segments', segments)
+            
+            segments.forEach((seg_value, seg_idx) => {
+                let baf_info = likelihood_baf_pval(likelihoods[seg_idx]);
+                if(seg_value.length > 1){
+
+                    seg_value.forEach((bin, bin_idx) =>{
+                        gstat_rd_all.push(wig[bin]);
+                        if(baf_info.mean <= baf_threshold){
+                            gstat_rd0.push(wig[bin]);
+                        }
+                        wig[bin].segment_score = levels[seg_idx];
+                    });
+                    gstat_rd.push(levels[seg_idx]);
+                    gstat_error.push(error[seg_idx]);
+                    gstat_lh.push(likelihoods[seg_idx]);
+
+                }
+
+            });
+
+            continue
+        }
+        
+        // Third stage for call
+        
+        // let data = gstat_rd0.lengthn == 0 ?  gstat_rd_all: gstat_rd0 ;
+        
+        let points = parseInt(1000 * (1 - min_cell_fraction));
+        if(points == 0){
+            points = 1;
+        }
+        let x = g_utils.linspace(min_cell_fraction, 1, points);
+        let master_lh = {};
+        let germline_lh = {};
+        for(let cn=10; cn > -1; cn--){
+            for(let h1=0; h1 < (cn/2+1); h1++){
+                let h2 = cn - h1;
+                let mrd = x.map((v, idx) => {return 1-v +v*cn/2});
+                let g_mrd = cn / 2;
+                let g_mbaf;
+                let mbaf;
+                if(cn > 0){
+                    g_mbaf = 0.5 - (h1 / (h1 + h2));
+                    mbaf = x.map((v, idx) => {return 0.5 - (1 - v + v * h1) / (2 - 2 * v + (h1 + h2) * v)});
+                   
+                }else {
+                    g_mbaf = 0;
+                    mbaf =  x.map((v, idx) => {return 0*v});
+                }
+                
+                for( let ei=0; ei < gstat_rd.length; ei++){
+                        
+                    let g_lh = normal(g_mrd * this.globalMean, 1, gstat_rd[ei], gstat_error[ei]) * likelihood_of_baf(gstat_lh[ei], 0.5 + g_mbaf);
+                    if(ei in germline_lh){
+                        germline_lh[ei].push([cn, h1, h2, g_lh, 1.0]);
+                    }else {
+                        germline_lh[ei] = [cn, h1, h2, g_lh, 1.0];
+                    }
+                    let slh = 0;
+                    let max_lh = 0;
+                    let max_x = 0;
+                    mrd.forEach((mi, idx) => {
+                        if(!isNaN(mbaf[idx])){
+                            let tmpl = normal(mi * this.globalMean, 1, gstat_rd[ei], gstat_error[ei]) * likelihood_of_baf(gstat_lh[ei], 0.5 + mbaf[idx]);
+                            slh += tmpl;
+                            if(tmpl > max_lh){
+                                max_lh = tmpl;
+                                max_x = x[idx];
+                            }
+                        }
+                    });
+                    if(ei in master_lh){
+                        master_lh[ei].push([cn, h1, h2, slh / x.length, max_x]);
+                    }else {
+                        master_lh[ei] = [cn, h1, h2, slh / x.length, max_x];
+                    }
+                }
+                
+                for( let ei=0; ei < gstat_rd.length; ei++){
+                    if(event_type == "germline"){
+                        master_lh[ei].sort((a, b) => a[3] - b[3]);
+                    }
+                    else {
+                        master_lh[ei].sort((a, b) => a[3] - b[3]);
+                        if(event_type == "both"){
+                            
+                            germline_lh[ei].sort((a, b) => a[3] - b[3]);
+                            if(germline_lh[ei][0][3] > master_lh[ei][0][3]){
+                                //let tmp_list = list(filter( lambda x: x[0] != germline_lh[ei][0][0] and x[1] != germline_lh[ei][0][1], master_lh[ei]))
+                                let tmp_list = master_lh[ei].filter((x) => (x[0] != germline_lh[ei][0][0]) && (x[1] <= germline_lh[ei][0][1]));
+                                // console.log('tmp_list', tmp_list)
+                                // master_lh[ei] = [germline_lh[ei][0]] + tmp_list
+                                master_lh[ei] = [germline_lh[ei][0]].push(...tmp_list);
+                            }
+                        }
+                    }
+                }
+                for( let ei=0; ei < gstat_rd.length; ei++){
+                    if(master_lh[ei][0][0] > 2);
+                    if(master_lh[ei][0][0] < 2);
+                    gstat_rd[ei] / this.globalMean;
+                    t_dist.t_test_1_sample(this.globalMean, gstat_rd[ei], gstat_error[ei], gstat_n[ei]);
+                    // console.log(etype)
+
+                }
+                
+
+                // break
+            }
+            
+        }
+        
+        var rawbinScore = this.formatDataStructure(this.wigFeatures, 'binScore', this.globalMean);
+        var callScore = this.formatDataStructure(this.wigFeatures, 'segment_score', this.globalMean);
+        
+        return {binScore: rawbinScore, segment_score: callScore}
+        
+    }
+
+    formatDataStructure(wigFeatures, feature_column, scaling_factor = 1) {
+        const results = [];
+        for (const [chr, wig] of Object.entries(wigFeatures)) {
+
+            wig.forEach(sample => {
+                var new_sample = { ...sample };
+                if (scaling_factor != 1) {
+                    new_sample.value = sample[feature_column] / scaling_factor * 2;
+                }
+                results.push(new_sample);
+            });
+        }
+
+        return results
+    }
+
+    formatDataStructure_BAF(feature_column, scaling_factor = 2) {
+        const baf1 = [];
+        const baf2 = [];
+        for (const [chr, wig] of Object.entries(this.wigFeatures)) {
+
+            wig.forEach(sample => {
+                
+                var baf1_value = { ...sample };
+                var baf2_value = { ...sample };
+                
+                let value = sample[feature_column];
+                if (value != 0.5){
+                    baf2_value.value = -2 * (1 - value);
+                    baf2.push(baf2_value);
+                }
+                baf1_value.value = -2 * value;
+                baf1.push(baf1_value);
+                    
+            });
+        }
+        
+
+        return [baf1, baf2]
+    }
+}
+
+function arrayMax(arr) {
+    return arr.reduce(function (p, v) {
+      return ( p > v ? p : v );
+    });
+  }
+
+/**
+ * Normal distribution.
+ * 
+ * @param {float} x - Variable.
+ * @param {float} a - area
+ * @param {float} x0 -  Mean value
+ * @param {float} sigma - Sigma
+ * @returns {float} - Value of distribution in x.
+ */
+function normal(x, a, x0, sigma){
+  
+  return a * Math.exp(-1* (x - x0) ** 2 / (2 * sigma ** 2)) / Math.sqrt(2 * Math.PI) / sigma
+
+}
+
+/**
+ *  Calculates two normal distributions overlap area.
+ * 
+ * @param {float} m1 - Mean value of the first distribution
+ * @param {float} s1 - Sigma of the first distribution
+ * @param {float} m2 - Mean value for second distribution
+ * @param {float} s2 - Sigma of the second distribution
+ * 
+ * @returns {float} area - Area of overlap
+ */
+function normal_overlap_approx(m1, s1, m2, s2){
+   
+    return Math.exp(-1* (m1-m2)**2/ (s1**2+s2**2))
+}
+
+
+/**
+ * Returns overlap area of two likelihood functions.
+ * 
+ * @param {*} lk1 - First likelihood function.
+ * @param {*} lk2 - Second likelihood function.
+ * 
+ * @returns {float}  - Overlap area.
+ */
+function likelihood_overlap(likelihood_1, likelihood_2){
+    let sum;
+    try{
+        sum = likelihood_1.reduce((accumulator, currentValue, currentIndex) => {return accumulator + Math.min(currentValue, likelihood_2[currentIndex])});
+    }catch{
+        console.log("Failed to find likelihood overlap: ", likelihood_1, likelihood_2);
+        return 0
+    }
+
+    return sum
+}
+
+/**
+ * Calculates normal distribution that is product of two given normal distributions.
+ * 
+ * @param {float} m1 - Mean value of the first distribution
+ * @param {float} s1 - Sigma of the first distribution
+ * @param {float} m2 - Mean value for second distribution
+ * @param {float} s2 - Sigma of the second distribution
+ * @returns {Object} An object representing the first distribution
+ * @property {float} nl - Mean value of the first distribution
+ * @property {float} ne - Sigma of the first distribution
+ */
+function normal_merge(m1, s1, m2, s2){
+   
+    if((s1 == 0) && (s2 == 0)){
+        return {nl: 0.5 * (m1 + m2), ne: 0}
+    }
+    else {
+        return {nl: (m1 * s2 * s2 + m2 * s1 * s1) / (s1 * s1 + s2 * s2), ne: Math.sqrt(s1 * s1 * s2 * s2 / (s1 * s1 + s2 * s2))}
+    }
+}
+
+/**
+ * Calculates likelihood for given baf
+ * @param {*} likelihood 
+ * @param {*} baf 
+ * @returns {float}  likelihood value
+ */
+function likelihood_of_baf(likelihood, baf){
+   
+    let bin = parseInt(baf * (likelihood.length - 1));
+    let fr = baf * (likelihood.length - 1) - bin;
+    if(bin < likelihood.length - 1){
+        return likelihood[bin] * (1 - fr) + likelihood[bin + 1] * fr
+    }
+    else {
+        return likelihood[bin]
+    }
+}
+
+/**
+ * 
+ * Calculates baf level and p-value for given likelihood function.
+ * 
+ * @param {*} likelihood 
+ * @returns {Object} An object representing BAF
+ * @property {float} mean  BAF level (difference from 1/2)
+ * @property {float} p  p-value for event different than 1/2
+ */
+function likelihood_baf_pval(likelihood) {
+    const res = likelihood.length;
+    const max_lh = Math.max(...likelihood);
+    let ix = likelihood.indexOf(max_lh);
+    if (ix > Math.floor(res / 2)) {
+      ix = res - 1 - ix;
+    }
+    const b = (res / 2 - ix) / (res + 1);
+  
+    const ix1 = Math.floor((res / 2 + ix) / 2);
+    const ix2 = res - 1 - ix1;
+    let p = likelihood.slice(ix1, ix2 + 1).reduce((acc, val) => acc + val, 0) / likelihood.reduce((acc, val) => acc + val, 0);
+    if (ix === Math.floor(res / 2)) {
+      p = 1.0;
+    }
+    return {mean:b, p:p};
+  }
+
+  var combined_caller = {CombinedCaller};
+
+function erf(x) {
+    var m = 1.0, s = 1.0, sum = x * 1.0;
+    for (var i = 1; i < 50; i++) {
+        m *= i;
+        s *= -1;
+        sum += (s * Math.pow(x, 2.0 * i + 1.0)) / (m * (2.0 * i + 1.0));
+    }
+    return (2 * sum) / Math.sqrt(3.14159265358979)
+}
+
+function getEValue(mean, sigma, rd, start, end) {
+    var arr = new DataStat(rd.slice(start, end));
+    if (arr.std == 0) {
+        if (sigma > 0) { arr.std = (sigma * arr.mean) / mean; }
+        else { arr.std = 1; }
+    }
+    var p_val = t_test_1_sample(mean, arr.mean, arr.std, end - start) / (end - start);
+    return p_val
+}
+
+function gaussianEValue(mean, sigma, rd, start, end) {
+    var arr = new DataStat(rd.slice(start, end));
+
+    if (arr.mean < mean) {
+        var x = (arr.max - arr.mean) / (sigma * Math.sqrt(2));
+        return Math.pow(0.5 * (1 + erf(x)), end - start)
+    }
+    var x = (arr.min - arr.mean) / (sigma * Math.sqrt(2));
+    return Math.pow(0.5 * (1 - erf(x)), end - start)
+}
+
+function adjustToEvalue(mean, sigma, rd, start, end, pval, max_steps = 1000) {
+    var val = getEValue(mean, sigma, rd, start, end);
+    var step = 0, done = false;
+    while ((val > pval) & !done & (step < max_steps)) {
+        done = true;
+        step += 1;
+        var [v1, v2, v3, v4] = [1e10, 1e10, 1e10, 1e10];
+        if (start > 0) v1 = getEValue(mean, sigma, rd, start - 1, end);
+        if (end - start > 2) {
+            var v2 = getEValue(mean, sigma, rd, start + 1, end);
+            var v3 = getEValue(mean, sigma, rd, start, end - 1);
+        }
+        if (end < rd.length) { var v4 = getEValue(mean, sigma, rd, start, end + 1); }
+        if (Math.min[(v4)] < val) {
+            done = false;
+            if (v1 == Math.min[(v4)]) {
+                start -= 1;
+                val = v1;
+            }
+            elif(v2 == Math.min[(v4)]); {
+                start += 1;
+                val = v2;
+            }
+            elif(v3 == Math.min[(v4)]); {
+                end -= 1;
+                val = v3;
+            }
+            elif(v4 == Math.min[(v4)]); {
+                end += 1;
+                val = v4;
+            }
+        }
+    }
+    if (val <= pval) { return end }
+    return 0;
+}
+
+class DataStat {
+    constructor(data_array) {
+        this.data = data_array;
+        this.mean = data_array.reduce((acc, n) => acc + n) / data_array.length;
+        this.std = Math.sqrt(data_array.reduce((acc, n) => (n - this.mean) ** 2) / data_array.length);
+    }
+}
+
+function t_test_1_sample(mean, m, s, n) {
+    if (s == 0) s = 1;
+    var t = ((mean - m) / s) * Math.sqrt(n);
+    var p = 1.0 - t_dist.TdistributionCDF(Math.abs(t), (n - 1));
+    return p
+}
+
+function t_test_2_samples(m1, s1, n1, m2, s2, n2) {
+    if (s1 == 0) s1 = 1;
+    if (s2 == 0) s2 = 1;
+    var t = (m1 - m2) / Math.sqrt(s1 ** 2 / n1 + s2 ** 2 / n2);
+    var df = ((s1 ** 2 / n1 + s2 ** 2 / n2) ** 2 * (n1 - 1) * (n2 - 1)) /
+        ((s1 ** 4 * (n2 - 1)) / n1 ** 2 + (s2 ** 4 * (n1 - 1)) / n2 ** 2);
+
+    var p = 1.0 - t_dist.TdistributionCDF(Math.abs(t), parseInt(df + 0.5));
+
+    return p
+}
+
+class Partition {
+
+    constructor(rd, mean, std) {
+        this.rd = rd;
+        this.mean = mean;
+        this.std = std;
+        this.bin_bands = [2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56, 64, 80, 96, 112, 128];
+    }
+
+    get_rd_signal_bandwidth(data_array) {
+        var new_array = [];
+
+        data_array.forEach((value, index) => {
+            var tmp_value = 0;
+            if (value > this.mean / 4) {
+                tmp_value = this.mean / (this.std ** 2 * value);
+            } else {
+                tmp_value = 4 / this.std ** 2;
+            }
+            new_array.push(tmp_value);
+        });
+        return new_array
+    }
+
+    meanShiftCaller(repeats = 3) {
+        var ChrLevels = {};
+        
+        Object.entries(this.rd).forEach(([chr, chr_rd]) => {
+            var masked = new Array(chr_rd.length).fill(false);
+
+            // set the level
+            var levels = new Array(chr_rd.length);
+
+            for (let b = 0; b < chr_rd.length; b++) {
+                if (!masked[b]) { levels[b] = chr_rd[b]; }
+            }
+
+            this.bin_bands.forEach((bin_band, bin_band_index) => {
+                // not masked levels at current bin
+                // get boolean values
+                var not_masked = masked.map((value, index) => { return !value; });
+
+                // not masked level at current bin
+                var nm_levels = [];
+
+                Object.entries(chr_rd).forEach(([k, v]) => { nm_levels.push(v.binScore); });
+                
+                // set the mask border
+                var mask_borders = [0];
+                var count = 0;
+
+                for (let i = 0; i < masked.length; i++) {
+                    if (masked[i]) {
+                        if (count > 0) {
+                            mask_borders.push(mask_borders[mask_borders.length - 1] + count - 1);
+                            count = 0;
+                        }
+                    } else { count += 1; }
+                }
+
+                mask_borders.shift();
+
+                // repeating steps
+                for (let step = 0; step < repeats; step++) {
+                    var isig = this.get_rd_signal_bandwidth(nm_levels);
+                    var grad = new Array(nm_levels.length).fill(0);
+
+                    for (let i = 0; i < nm_levels.length; i++) {
+                        for (let j = i - 3 * bin_band; j <= i + 3 * bin_band + 1; j++) {
+                            if (j < 0 || j >= nm_levels.length) continue;
+                            if (Math.abs(i - j) >= nm_levels.length) continue;
+
+                            var g_value = (j - i) * Math.exp((-0.5 * (j - i) ** 2) / bin_band ** 2) *
+                                Math.exp(-0.5 * (nm_levels[i] - nm_levels[j]) ** 2 * isig[i]);
+
+                            grad[i] += g_value;
+                        }
+                    }
+                    
+                    // get the border
+                    var border = new Array();
+                    for (var i = 0; i < grad.length - 1; i++) {
+                        if ((grad[i] < 0) & (grad[i + 1] >= 0)) border.push(i);
+                    }
+
+                    border.push(grad.length - 1);
+                    border = border.concat(mask_borders).sort((a, b) => a - b);
+                    border = Array.from(new Set(border));
+
+                    var pb = 0;
+                    for (var i = 0; i < border.length; i++) {
+                        var range_array = nm_levels.slice(pb, border[i] + 1);
+                        var range_mean = range_array.reduce((acc, n) => acc + n) / range_array.length;
+
+                        nm_levels.fill(range_mean, pb, border[i] + 1);
+                        pb = border[i] + 1;
+                    }
+                }
+
+                for (var i = 0, j = 0; i < levels.length; i++) {
+                    if (not_masked[i]) {
+                        levels[i] = nm_levels[j];
+                        j++;
+                    }
+                }
+
+                //get the border
+                var border = new Array();
+                for (var i = 0; i < levels.length - 1; i++) {
+                    //if(i == levels.length -1) continue;
+                    var diff = Math.abs(levels[i + 1] - levels[i]);
+
+                    if (diff > 0.01) border.push(i + 1);
+                }
+
+                border.unshift(0);
+                border.push(levels.length);
+
+                // reset the mask
+                masked = new Array(this.rd.length).fill(false);
+
+                // check the borders
+                for (var i = 1; i < border.length; i++) {
+                    var seg = [border[i - 1], border[i]];
+                    var seg_left = [border[i - 1], border[i - 1]];
+                    if (i > 1) { seg_left[0] = border[i - 2]; } else continue;
+
+                    var seg_right = [border[i], border[i]];
+                    if (i < border.length - 1) { seg_right[1] = border[i + 1]; } else continue;
+
+                    var n = seg[1] - seg[0];
+                    var n_left = seg_left[1] - seg_left[0];
+                    var n_right = seg_right[1] - seg_right[0];
+                    if (n <= 1) continue;
+                    var seg_array = new DataStat(levels.slice(seg[0], seg[1]));
+
+                    if (n_right <= 15 || n_left <= 15 || n <= 15) {
+                        var ns = 1.8 * Math.sqrt(levels[seg_left[0]] / this.mean) * this.std;
+                        if (Math.abs(levels[seg_left[0]] - levels[seg[0]]) < ns) { continue }
+
+                        ns = 1.8 * Math.sqrt(levels[seg_right[0]] / this.mean) * this.std;
+                        if (Math.abs(levels[seg_right[0]] - levels[seg[0]]) < ns) { continue }
+                    } else {
+                        var seg_left_array = levels.slice(seg_left[0], seg_left[1]);
+                        var seg_left_1 = new DataStat(seg_left_array);
+
+                        var seg_right_array = levels.slice(seg_right[0], seg_right[1]);
+                        var seg_right_1 = new DataStat(seg_right_array);
+
+                        var ttest_2sample_1 = t_test_2_samples(seg_array.mean, seg_array.std, seg_array.data.length,
+                            seg_left_1.mean, seg_left_1.std, seg_left_1.data.length);
+                        if (ttest_2sample_1 > (0.01 / genome_size) * bin_size * (n + n_left)) { continue }
+
+                        var ttest_2sample_2 = t_test_2_samples(seg_array.mean, seg_array.std, seg_array.data.length,
+                            seg_right_1.mean, seg_right_1.std, seg_right_1.data.length);
+                        if (ttest_2sample_2 > (0.01 / genome_size) * bin_size * (n + n_right)) { continue }
+                    }
+
+                    var ttest_1sample_1 = t_test_1_sample(this.mean, seg_array.mean, seg_array.std, seg_array.data.length);
+                    if (ttest_1sample_1 > 0.05) { continue }
+                    let segments_rd = nm_levels.slice(seg[0], seg[1]);
+                    var raw_seg_data = new DataStat(segments_rd);
+
+                    masked.fill(true, seg[0], seg[1]);
+                    levels.fill(raw_seg_data.mean, seg[0], seg[1]);
+                }
+            });
+
+            ChrLevels[chr] = levels;
+
+        });
+        return ChrLevels
+    }
+    call_mean_shift(repeats = 3) {
+        const bin_size = 1000;
+        // const genome_size = bin_size * this.rd.length;
+        const genome_size = 2871000000;
+        var masked = new Array(this.rd.length).fill(false);
+
+        // set the level
+        var levels = new Array(this.rd.length);
+        for (var b = 0; b < this.rd.length; b++) {
+            if (!masked[b]) {
+                levels[b] = this.rd[b];
+            }
+        }
+        this.bin_bands.forEach((bin_band, bin_band_index) => {
+            // not masked levels at current bin
+            // get boolean values
+            var not_masked = masked.map((value, index) => {
+                return !value;
+            });
+
+            // not masked level at current bin
+            // var nm_levels = not_masked.map((value, index) => {if(value) return this.rd[index]});
+            var nm_levels = [];
+            not_masked.forEach((value, index) => {
+                if (value) nm_levels.push(this.rd[index]);
+            });
+
+            // console.log(bin_band, nm_levels);
+
+            // set the mask border
+            var mask_borders = [0];
+            var count = 0;
+
+            for (var i = 0; i < masked.length; i++) {
+                if (masked[i]) {
+                    if (count > 0) {
+                        mask_borders.push(
+                            mask_borders[mask_borders.length - 1] + count - 1,
+                        );
+                        count = 0;
+                    }
+                } else {
+                    count += 1;
+                }
+            }
+
+            mask_borders.shift();
+            // repeating steps
+            for (var step = 0; step < repeats; step++) {
+                var isig = this.get_rd_signal_bandwidth(nm_levels);
+                // console.log(isig);
+                var grad = new Array(nm_levels.length).fill(0);
+
+                for (var i = 0; i < nm_levels.length; i++) {
+                    for (var j = i - 3 * bin_band; j <= i + 3 * bin_band + 1; j++) {
+                        if (j < 0 || j >= nm_levels.length) continue;
+                        if (Math.abs(i - j) >= nm_levels.length) continue;
+
+                        var g_value =
+                            (j - i) *
+                            Math.exp((-0.5 * (j - i) ** 2) / bin_band ** 2) *
+                            Math.exp(-0.5 * (nm_levels[i] - nm_levels[j]) ** 2 * isig[i]);
+                        // console.log(g_value);
+                        grad[i] += g_value;
+                    }
+                }
+                // console.log(grad);
+
+                // get the border
+                var border = new Array();
+                for (var i = 0; i < grad.length - 1; i++) {
+                    if ((grad[i] < 0) & (grad[i + 1] >= 0)) border.push(i);
+                }
+
+                border.push(grad.length - 1);
+                border = border.concat(mask_borders).sort((a, b) => a - b);
+                border = Array.from(new Set(border));
+
+                var pb = 0;
+                for (var i = 0; i < border.length; i++) {
+                    var range_array = nm_levels.slice(pb, border[i] + 1);
+                    var range_mean =
+                        range_array.reduce((acc, n) => acc + n) / range_array.length;
+
+                    nm_levels.fill(range_mean, pb, border[i] + 1);
+                    pb = border[i] + 1;
+                }
+            }
+
+            for (var i = 0, j = 0; i < levels.length; i++) {
+                if (not_masked[i]) {
+                    levels[i] = nm_levels[j];
+                    j++;
+                }
+            }
+
+            //get the border
+            var border = new Array();
+            for (var i = 0; i < levels.length - 1; i++) {
+                //if(i == levels.length -1) continue;
+                var diff = Math.abs(levels[i + 1] - levels[i]);
+
+                if (diff > 0.01) border.push(i + 1);
+            }
+
+            border.unshift(0);
+            border.push(levels.length);
+
+            // reset the mask
+            masked = new Array(this.rd.length).fill(false);
+
+            // check the borders
+            for (var i = 1; i < border.length; i++) {
+                var seg = [border[i - 1], border[i]];
+                var seg_left = [border[i - 1], border[i - 1]];
+                if (i > 1) {
+                    seg_left[0] = border[i - 2];
+                } else continue;
+
+                var seg_right = [border[i], border[i]];
+                if (i < border.length - 1) {
+                    seg_right[1] = border[i + 1];
+                } else continue;
+
+                var n = seg[1] - seg[0];
+                var n_left = seg_left[1] - seg_left[0];
+                var n_right = seg_right[1] - seg_right[0];
+                if (n <= 1) continue;
+                var seg_array = new DataStat(levels.slice(seg[0], seg[1]));
+
+                if (n_right <= 15 || n_left <= 15 || n <= 15) {
+                    var ns = 1.8 * Math.sqrt(levels[seg_left[0]] / this.mean) * this.std;
+                    if (Math.abs(levels[seg_left[0]] - levels[seg[0]]) < ns) {
+                        continue;
+                    }
+
+                    ns = 1.8 * Math.sqrt(levels[seg_right[0]] / this.mean) * this.std;
+                    if (Math.abs(levels[seg_right[0]] - levels[seg[0]]) < ns) {
+                        continue;
+                    }
+                } else {
+                    var seg_left_array = levels.slice(seg_left[0], seg_left[1]);
+                    var seg_left_1 = new DataStat(seg_left_array);
+
+                    var seg_right_array = levels.slice(seg_right[0], seg_right[1]);
+                    var seg_right_1 = new DataStat(seg_right_array);
+
+                    var ttest_2sample_1 = t_test_2_samples(
+                        seg_array.mean,
+                        seg_array.std,
+                        seg_array.data.length,
+                        seg_left_1.mean,
+                        seg_left_1.std,
+                        seg_left_1.data.length,
+                    );
+                    if (
+                        ttest_2sample_1 >
+                        (0.01 / genome_size) * bin_size * (n + n_left)
+                    ) {
+                        continue;
+                    }
+
+                    var ttest_2sample_2 = t_test_2_samples(
+                        seg_array.mean,
+                        seg_array.std,
+                        seg_array.data.length,
+                        seg_right_1.mean,
+                        seg_right_1.std,
+                        seg_right_1.data.length,
+                    );
+                    if (
+                        ttest_2sample_2 >
+                        (0.01 / genome_size) * bin_size * (n + n_right)
+                    ) {
+                        continue;
+                    }
+                }
+
+                var ttest_1sample_1 = t_test_1_sample(
+                    this.mean,
+                    seg_array.mean,
+                    seg_array.std,
+                    seg_array.data.length,
+                );
+                if (ttest_1sample_1 > 0.05) {
+                    continue;
+                }
+                var raw_seg_data = new DataStat(this.rd.slice(seg[0], seg[1]));
+
+                masked.fill(true, seg[0], seg[1]);
+                levels.fill(raw_seg_data.mean, seg[0], seg[1]);
+            }
+        });
+        return levels;
+    }
+
+    cnv_calling(bin_size = 100000) {
+        var delta = 0.25;
+        var delta = delta * this.mean;
+
+        var min = this.mean - delta, max = this.mean + delta;
+        // console.log('min: ', min, ', Max: ', max)
+
+        // console.log('delta', delta)
+        var normal_genome_size = 2971000000;
+
+        var levels = this.meanShiftCaller();
+
+        
+        var merged_level = {};
+        var cnv_levels = [];
+        // var t_value = cdf(Math.abs(10), (5)) 
+        // console.log('Testing student t test:', t_value)
+
+        Object.entries(levels).forEach(([chr, chr_levels]) => {
+            
+            var done = false;
+            while (!done) {
+                done = true;
+
+                //
+                // get the borders
+                //
+                var borders = new Array(1).fill(0);
+                for (let i = 0; i < chr_levels.length - 1; i++) {
+                    var diff = Math.abs(chr_levels[i + 1] - chr_levels[i]);
+                    if (diff > 0.01) borders.push(i + 1);
+                }
+                borders.push(chr_levels.length);
+
+                for (let ix = 0; ix < borders.length - 2; ix++) {
+                    var v1 = Math.abs(chr_levels[borders[ix]] - chr_levels[borders[ix + 1]]);
+                    // console.log(ix, v1);
+                    if (v1 < delta) {
+                        var v2 = v1 + 1, v3 = v1 + 1;
+
+                        if (ix > 0) { v2 = Math.abs(chr_levels[borders[ix]] - chr_levels[borders[ix - 1]]); }
+                        if (ix < borders.length - 3) { v3 = Math.abs(levels[borders[ix + 1]] - chr_levels[borders[ix + 2]]); }
+
+                        if (v1 < v2 && v1 < v3) {
+                            done = false;
+
+                            var tmp_array = new DataStat(chr_levels.slice(borders[ix], borders[ix + 2]));
+                            chr_levels.fill(tmp_array.mean, borders[ix], borders[ix + 2]);
+                            borders.splice(ix + 1, ix + 1);
+                        }
+                    }
+                }
+            }
+            // console.log('updated levels', chr_levels)
+
+            // var chr_rd = this.rd[chr]
+            var chr_rd = [];
+            Object.entries(this.rd[chr]).forEach(([bin, binDict]) => { chr_rd.push(binDict.binScore); });
+            // console.log('cnv_calling', chr_rd)
+
+            //
+            // Calling Segments
+            //
+
+            //var flags = [""] * levels.length;
+            var flags = new Array(chr_levels.length).fill("");
+
+            // console.log('default levels', chr, chr_levels)
+            var b = 0;
+            var pval = (0.05 * bin_size) / normal_genome_size;
+            while (b < chr_levels.length) {
+                var b0 = b, border_start = b;
+                while ((b < chr_levels.length) & (chr_levels[b] < min)) {
+                    b += 1;
+                }
+                var border_end = b;
+
+                if (border_end > border_start + 1) {
+                    // console.log('border min', border_start, border_end)
+                    var adj = adjustToEvalue(this.mean, this.std, chr_rd, border_start, border_end, pval);
+                    // console.log(adj)
+                    if (adj) {
+                        var border_start, border_end = adj;
+                        flags.fill("D", border_start, border_end);
+                    }
+                }
+                border_start = b;
+                while ((b < chr_levels.length) & (chr_levels[b] > max)) { b += 1; }
+                border_end = b;
+
+                if (border_end > border_start + 1) {
+                    adj = adjustToEvalue(this.mean, this.std, chr_rd, border_start, border_end, pval);
+                    // console.log(adj)
+                    if (adj) {
+                        (border_end = adj);
+                        // flags[bs:be] = ["A"] * (be - bs)
+                        flags.fill("A", border_start, border_end);
+                    }
+                }
+                if (b == b0) b += 1;
+            }
+
+            //console.log(chr, 'segments', segments)
+            //
+            //  Calling additional deletions
+            //
+            b = 0;
+            while (b < chr_levels.length) {
+                while ((b < chr_levels.length) & (flags[b] != "")) b += 1;
+                border_start = b;
+                while ((b < chr_levels.length) & (chr_levels[b] < min)) b += 1;
+                border_end = b;
+                if (border_end > border_start + 1) {
+                    if (gaussianEValue(this.mean, this.std, chr_rd, border_start, border_end) < 0.05 / normal_genome_size) {
+                        flags.fill(["d"] * (border_end - border_start), border_start, border_end);
+                    }
+                    b -= 1;
+                }
+                b += 1;
+            }
+
+            b = 0;
+            var cf;
+            if (b < chr_levels.length) cf = flags[b];
+
+            border_start = 0;
+
+            //var merge = [...this.rd]
+            var merge = [...chr_rd];
+            // console.log('initial merge', merge)
+            while (b < chr_levels.length) {
+                while (flags[b] == cf) {
+                    b += 1;
+                    if (b >= flags.length) break;
+                }
+                if (b > border_start) {
+                    var merge_arr = new DataStat(merge.slice(border_start, b));
+                    merge.fill(merge_arr.mean, border_start, b);
+                }
+                if (b < chr_levels.length) cf = flags[b];
+                border_start = b;
+            }
+
+            merged_level[chr] = merge;
+
+
+            //
+            // calculate calls
+            // 
+            b = 0;
+            while (b < chr_levels.length) {
+                cf = flags[b];
+                if (cf == "") {
+                    b += 1;
+                    continue
+                }
+                border_start = b;
+                while (b < chr_levels.length & cf == flags[b]) { b += 1; }
+                var border_arr = new DataStat(merge.slice(border_start, b));
+                let cnv = border_arr.mean / this.mean;
+                let event_type;
+                if (cf == "D") {
+                    event_type = "deletion";
+                } else {
+                    event_type = "duplication";
+                }
+                let cnv_dict = {
+                    chr: chr,
+                    start: bin_size * border_start + 1,
+                    end: bin_size * b,
+                    size: bin_size * (b - border_start + 1),
+                    value: cnv * 2,
+                    event_type: event_type
+                };
+                cnv_levels.push(cnv_dict);
+
+            }
+        });
+
+        return [merged_level, cnv_levels]
+    }
+}
+
+
+
+var read_depth_caller = { Partition };
+
+class CNVpytorVCF {
+    constructor(allVariants, binSize) {
+        this.allVariants = allVariants;
+        this.rowBinSize = 10000;
+        this.binSize = binSize;
+        this.binFactor = binSize / this.rowBinSize;
+
+    }
+
+    async computeDepthFeatures() {
+
+        const chromosomes = Object.keys(this.allVariants);
+        const wigFeatures = [];
+
+        for (let chr of chromosomes) {
+            const variants = this.allVariants[chr];
+            if (variants.length === 0) continue
+
+            const firstSnp = variants[0];
+
+            let sum = 0;
+            let count = 0;
+            let binStart = firstSnp.start = firstSnp.start % this.binSize;   // Place start at integer multiple of binSize
+            let binEnd = binStart + this.binSize;
+            let featureBin = 0;
+
+            for (let snp of variants) {
+                const position = snp.start + 1;    // Convert from 0-base to 1-base coords
+                featureBin = Math.max(Math.floor((snp.start - 1) / this.binSize), 0);
+                if (position > binEnd) {
+
+                    if (count > 0) {
+                        wigFeatures.push({ chr, start: binStart, end: binEnd, value: sum, bin: featureBin, count: count });
+                    }
+
+                    // Start new bin
+                    sum = 0;
+                    //count = 0
+                    binStart = snp.start - snp.start % this.binSize;
+                    binEnd = binStart + this.binSize;
+                }
+
+                const dpValue = snp.calls[9].info["DP"];
+                // const dpValue = snp.getInfo("DP")
+
+                if (dpValue) {
+                    sum += Number.parseInt(dpValue);
+                    count++;
+                }
+            }
+
+            // final bin
+            if (count > 0) {
+                wigFeatures.push({ chr, start: binStart, end: binEnd, value: sum, bin: featureBin, count: count });
+            }
+        }
+
+        return wigFeatures
+    }
+
+    // for for read depth calculation
+    async computeReadDepth() {
+        const chromosomes = Object.keys(this.allVariants);
+        var wigFeatures = {};
+
+        for (let chr of chromosomes) {
+            const variants = this.allVariants[chr];
+            var featureBin;
+            if (variants.length === 0) continue
+            for (let snp of variants) {
+                featureBin = Math.max(Math.floor(snp.start / this.rowBinSize), 0);
+                if (!wigFeatures[chr]) { wigFeatures[chr] = []; }
+                if (!wigFeatures[chr][featureBin]) {
+
+                    wigFeatures[chr][featureBin] = {
+                        chr,
+                        start: featureBin * this.rowBinSize,
+                        end: (featureBin + 1) * this.rowBinSize,
+                        value: 0,
+                        sum_score: 0,
+                        count: 0,
+                    };
+                }
+                const dpValue = snp.calls[9].info["DP"];
+                if (dpValue) {
+                    // sum += Number.parseInt(dpValue)
+                    wigFeatures[chr][featureBin].sum_score += Number.parseInt(dpValue);
+                    wigFeatures[chr][featureBin].count++;
+                }
+
+            }
+            // for last bin
+            //let last_bin = wigFeatures[chr][featureBin]
+            //last_bin.value = parseInt(last_bin.sum_score / last_bin.count) * 100
+        }
+
+        // adjust the bin values to actual bin size
+        var avgbin = {};
+        for (let chr of chromosomes) {
+            if (!avgbin[chr]) { avgbin[chr] = []; }
+            for (let k = 0; k < wigFeatures[chr].length / this.binFactor; k++) {
+                const featureBin = k;
+                if (!avgbin[chr][k]) {
+                    avgbin[chr][k] = {
+                        chr,
+                        binScore: 0,
+                        start: featureBin * this.binSize,
+                        end: (featureBin + 1) * this.binSize,
+                    };
+                }
+
+                for (var j = k * 10; j < 10 * k + 10; j++) {
+                    if (wigFeatures[chr][j]) {
+                        var tmp_score = parseInt(wigFeatures[chr][j].sum_score / wigFeatures[chr][j].count) * 100;
+                        avgbin[chr][k].binScore += tmp_score;
+                    }
+                }
+            }
+        }
+
+        var finalFeatureSet = this.readDepthMeanshift(avgbin);
+        return finalFeatureSet
+
+    }
+    readDepthMeanshift(wigFeatures) {
+
+        // Get global mean and standrad deviation
+        var fit_info = new g_utils.GetFit(wigFeatures);
+        var [globamMean, globalStd] = fit_info.fit_data();
+
+        // Apply partition method
+        var partition = new read_depth_caller.Partition(wigFeatures, globamMean, globalStd);
+        var partition_array = partition.meanShiftCaller();
+        var caller_array = partition.cnv_calling();
+
+        // Assign the partition values to each bin
+        Object.entries(wigFeatures).forEach(([chr, chr_rd]) => {
+            chr_rd.forEach((bin, index) => {
+                bin.partition_level = parseInt(partition_array[chr][index]);
+                bin.partition_call = parseInt(caller_array[0][chr][index]);
+            });
+        });
+
+        var rawbinScore = this.formatDataStructure(wigFeatures, 'binScore', globamMean);
+        var partition_levels = this.formatDataStructure(wigFeatures, 'partition_level', globamMean);
+        var partition_call = this.formatDataStructure(wigFeatures, 'partition_call', globamMean);
+
+        return [rawbinScore, partition_levels, partition_call, caller_array[1]]
+
+    }
+    formatDataStructure(wigFeatures, feature_column, scaling_factor = 1) {
+        const results = [];
+        for (const [chr, wig] of Object.entries(wigFeatures)) {
+
+            wig.forEach(sample => {
+                var new_sample = { ...sample };
+                if (scaling_factor != 1) {
+                    new_sample.value = sample[feature_column] / scaling_factor * 2;
+                }
+                results.push(new_sample);
+            });
+        }
+
+        return results
+    }
+
+    async computeBAF_v2() {
+
+        const chromosomes = Object.keys(this.allVariants);
+        const wigFeatures = {};
+        const baf1 = [], baf2 = [];
+
+        for (let chr of chromosomes) {
+            const variants = this.allVariants[chr];
+            if (variants.length === 0) continue
+            var featureBin;
+            for (let snp of variants) {
+                featureBin = Math.max(Math.floor(snp.start / this.binSize), 0);
+
+                if (!wigFeatures[chr]) {
+                    wigFeatures[chr] = [];
+                }
+                if (!wigFeatures[chr][featureBin]) {
+                    if (featureBin > 0) {
+                        // calculating the BAF likelihood for previous bin
+                        let previous_featureBin = featureBin - 1;
+                        if (wigFeatures[chr][previous_featureBin]) {
+
+                            const updated_bin = this.get_max_min_score(wigFeatures[chr][previous_featureBin]);
+
+                            if (updated_bin.value != 0.5) {
+                                let baf_wig = Object.assign({}, updated_bin);
+                                baf_wig.value = -2 * (1 - updated_bin.value);
+                                baf2.push(baf_wig);
+                            }
+                            updated_bin.value = - 2 * updated_bin.value;
+                            wigFeatures[chr][previous_featureBin] = updated_bin;
+
+                            baf1.push(wigFeatures[chr][previous_featureBin]);
+
+                        }
+                    }
+                    wigFeatures[chr][featureBin] = {
+                        chr,
+                        start: featureBin * this.binSize,
+                        end: (featureBin + 1) * this.binSize,
+                        value: 0,
+                        count: 0,
+                        likelihood_score: [],
+                        min_score: 0,
+                    };
+                }
+                const calls = snp.calls[9];
+                let genotype = calls.genotype;
+                let ad_score = calls.info["AD"].split(',');
+                let ad_a = ad_score[0], ad_b = ad_score[1];
+
+                if ((genotype[0] == 0 && genotype[1] == 1) || (genotype[0] == 1 && genotype[1] == 0)) {
+                    //apply the beta function
+                    if (wigFeatures[chr][featureBin].likelihood_score.length == 0) {
+                        wigFeatures[chr][featureBin].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {
+                            return beta(ad_a, ad_b, value);
+                        });
+                    } else {
+                        var sum = 0;
+
+                        wigFeatures[chr][featureBin].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {
+                            var likelihood_value = wigFeatures[chr][featureBin].likelihood_score[index] * beta(ad_a, ad_b, value);
+                            sum = sum + likelihood_value;
+                            return likelihood_value;
+                        });
+
+                        wigFeatures[chr][featureBin].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {
+                            return wigFeatures[chr][featureBin].likelihood_score[index] / sum;
+                        });
+                    }
+                    wigFeatures[chr][featureBin].count++;
+                }
+            }
+
+            // last feature bin
+            const updated_bin = this.get_max_min_score(wigFeatures[chr][featureBin]);
+
+            if (updated_bin.value != 0.5) {
+                let baf_wig = Object.assign({}, updated_bin);
+                baf_wig.value = -2 * (1 - updated_bin.value);
+                baf2.push(baf_wig);
+            }
+            updated_bin.value = -2 * updated_bin.value;
+            wigFeatures[chr][featureBin] = updated_bin;
+            baf1.push(wigFeatures[chr][featureBin]);
+        }
+
+        return [baf1, baf2]
+
+    }
+
+
+    format_BAF_likelihood(wigFeatures) {
+        const results = [];
+
+        for (const [chr, wig] of Object.entries(wigFeatures)) {
+            wig.forEach(sample => {
+                var new_sample = { ...sample };
+                if (sample.value != 0.5) {
+                    new_sample.value = 1 - sample.value;
+                    results.push(new_sample);
+                }
+            });
+        }
+        return results
+    }
+
+    get_max_min_score(sample) {
+
+        if (sample.likelihood_score.length > 0) {
+            const max = Math.max(...sample.likelihood_score);
+            const res = sample.likelihood_score.indexOf(max);
+            sample.value = Math.max(res / 100, 1 - res / 100);
+            sample.min_score = Math.min(res / 100, 1 - res / 100);
+
+        } else {
+            sample.score = 0;
+        }
+
+        return sample
+    }
+
+    async getAllbins() {
+        const bins = await this.computeDepthFeatures();
+
+        //console.log('getAllbins', bins["value"])
+
+        const fitter = new g_utils.GetFit(bins);
+
+        fitter.fit_data();
+        //  dconsole.log('rd list', distParams)
+
+        return bins
+    }
+
+    async read_rd_baf(caller='ReadDepth'){
+        
+        const chromosomes = Object.keys(this.allVariants);
+        var wigFeatures = {};
+
+        for (let chr of chromosomes) {
+            const variants = this.allVariants[chr];
+            var featureBin;
+            if (variants.length === 0) continue
+            for (let snp of variants) {
+                featureBin = Math.max(Math.floor(snp.start / this.rowBinSize), 0);
+                if (!wigFeatures[chr]) { wigFeatures[chr] = []; }
+                if (!wigFeatures[chr][featureBin]) {
+
+                    wigFeatures[chr][featureBin] = {
+                        chr,
+                        start: featureBin * this.rowBinSize,
+                        end: (featureBin + 1) * this.rowBinSize,
+                        // value: 0,
+                        dp_sum_score: 0,
+                        dp_count: 0,
+                        hets_count:0,
+                        hets: [],
+                        //likelihood_score: [],
+                    };
+                }
+                const calls = snp.calls[9];
+                const dpValue = calls.info["DP"];
+                if (dpValue) {
+                    
+                    wigFeatures[chr][featureBin].dp_sum_score += Number.parseInt(dpValue);
+                    wigFeatures[chr][featureBin].dp_count++;
+                }
+                
+                let ad_score = calls.info["AD"].split(',');
+                let genotype = calls.genotype;
+                if ((genotype[0] == 0 && genotype[1] == 1) || (genotype[0] == 1 && genotype[1] == 0)) {
+                    //apply the beta function
+                    wigFeatures[chr][featureBin].hets_count++;
+                    let ad_a = parseInt(ad_score[0]), ad_b = parseInt(ad_score[1]);
+                    wigFeatures[chr][featureBin].hets.push({ref:ad_a, alt:ad_b});
+                }
+           
+            }
+        
+        }
+    
+        var avgbin = this.adjust_bin_size(wigFeatures);
+        var finalFeatureSet;
+        if(caller == 'ReadDepth'){
+            finalFeatureSet = this.readDepthMeanshift(avgbin);
+            var baf = this.formatDataStructure_BAF(avgbin, 'max_likelihood');
+        }else if(caller=='2D'){
+            
+            let caller_obj = new combined_caller.CombinedCaller(avgbin,  this.binSize);        
+            let processed_bins = await caller_obj.call_2d();
+            
+            finalFeatureSet = [processed_bins.binScore, [], processed_bins.segment_score];
+    
+            var baf = caller_obj.formatDataStructure_BAF('max_likelihood');
+        }
+        
+
+        return [finalFeatureSet, baf]
+    }
+
+    formatDataStructure_BAF(wigFeatures, feature_column, scaling_factor = 2) {
+        const baf1 = [];
+        const baf2 = [];
+        for (const [chr, wig] of Object.entries(wigFeatures)) {
+
+            wig.forEach(sample => {
+                delete sample.likelihood_score;
+                var baf1_value = { ...sample };
+                var baf2_value = { ...sample };
+                
+                let value = sample[feature_column];
+                if (value != 0.5){
+                    baf2_value.value = -2 * (1 - value);
+                    baf2.push(baf2_value);
+                }
+                baf1_value.value = -2 * value;
+                baf1.push(baf1_value);
+                    
+            });
+        }
+        
+
+        return [baf1, baf2]
+    }
+    
+    adjust_bin_size(wigFeatures){
+        const chromosomes = Object.keys(this.allVariants);
+        // adjust the bin values to actual bin size
+        var avgbin = {};
+        for (let chr of chromosomes) {
+            if (!avgbin[chr]) { avgbin[chr] = []; }
+            for (let k = 0; k < wigFeatures[chr].length / this.binFactor; k++) {
+                const featureBin = k;
+                if (!avgbin[chr][k]) {
+                    avgbin[chr][k] = {
+                        chr,
+                        start: featureBin * this.binSize,
+                        end: (featureBin + 1) * this.binSize,
+                        dp_count: 0,
+                        hets_count: 0,
+                        binScore: 0,
+                        likelihood_score: [],
+                    };
+                }
+
+                for (var j = k * 10; j < 10 * k + 10; j++) {
+                   
+                    if (wigFeatures[chr][j]) {
+                        var tmp_score = parseInt(wigFeatures[chr][j].dp_sum_score / wigFeatures[chr][j].dp_count) * 100;
+                        avgbin[chr][k].binScore += tmp_score;
+                        avgbin[chr][k].dp_count += wigFeatures[chr][j].dp_count;
+                        avgbin[chr][k].hets_count += wigFeatures[chr][j].hets_count;
+
+                        if (wigFeatures[chr][j].hets.length != 0){
+                        
+                            
+                            wigFeatures[chr][j].hets.forEach((hets, hets_idx) => {
+                                if(avgbin[chr][k].likelihood_score.length == 0){
+                                    avgbin[chr][k].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {
+                                        return beta(hets.ref, hets.alt, value);
+                                    });
+                                }
+                                else {
+                                    var likelihood_sum = 0;
+                                    avgbin[chr][k].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {
+                                        var likelihood_value = avgbin[chr][k].likelihood_score[index] * beta(hets.ref, hets.alt, value);
+                                        likelihood_sum += likelihood_value;
+                                        return likelihood_value;
+                                    });
+
+                                    avgbin[chr][k].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {
+                                        return avgbin[chr][k].likelihood_score[index] / likelihood_sum;
+                                    });
+                       
+                                }
+                            });
+                            
+                            // avgbin[chr][k].likelihood_score *= wigFeatures[chr][j].likelihood_score
+                        }
+                    }
+                }
+
+                const updated_bin = this.get_max_min_score(avgbin[chr][k]);
+                avgbin[chr][k].max_likelihood = updated_bin.value;
+            }
+        }
+        return avgbin
+    }
+
+}
+
+function beta(a, b, p, phased = true) {
+    return p ** a * (1 - p) ** b + p ** b * (1 - p) ** a;
+}
+
+/*
+* The MIT License (MIT)
+*
+* Copyright (c) 2016-2017 The Regents of the University of California
+* Author: Arijit Panda
+*
+* Permission is hereby granted, free of charge, to any person obtaining a copy
+* of this software and associated documentation files (the "Software"), to deal
+* in the Software without restriction, including without limitation the rights
+* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+* copies of the Software, and to permit persons to whom the Software is
+* furnished to do so, subject to the following conditions:
+*
+* The above copyright notice and this permission notice shall be included in
+* all copies or substantial portions of the Software.
+*
+*
+* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+* THE SOFTWARE.
+*/
+
+
+/**
+ * Represents 2 or more wig tracks overlaid on a common viewport.
+ */
+
+const DEFAULT_TRACK_HEIGHT = 250;
+
+class CNVPytorTrack extends TrackBase {
+
+    constructor(config, browser) {
+        super(config, browser);
+        this.featureType = 'numeric';
+        this.paintAxis = paintAxis;
+        
+        if (!config.max) {
+            this.defaultScale = true;
+            this.autoscale = false;
+        }
+
+        // Invoke height setter last to allocated to coverage and alignment tracks
+        this.height = (config.height !== undefined ? config.height : DEFAULT_TRACK_HEIGHT);
+    }
+
+    async init(config) {
+
+        this.type = "cnvpytor";
+        this.graphType = config.graphType || "points";
+        this.bin_size = config.bin_size || 100000;
+        this.signal_name = config.signal_name || "rd_snp";
+        this.cnv_caller = config.cnv_caller || '2D';
+        this.colors = config.colors || ['gray', 'black', 'green', 'blue'];
+        super.init(config);
+
+    }
+
+    get supportsWholeGenome() {
+        return true
+    }
+
+    get_signals() {
+        let signals = [];
+
+        if (this.signal_name == 'rd_snp') {
+            signals = ["RD_Raw", "RD_Raw_gc_coor", this.cnv_caller, "BAF1", "BAF2"];
+
+        } else if (this.signal_name == 'rd') {
+            signals = ["RD_Raw", "RD_Raw_gc_coor", this.cnv_caller];
+
+        } else if (this.signal_name == 'snp') {
+            signals = ["BAF1", "BAF2"];
+
+        } else if (this.signal_name == 'cnh') {
+            signals = [this.cnv_caller];
+        }
+        return signals
+    }
+
+    get_signal_colors() {
+        
+        let signal_colors = [
+            { singal_name: 'RD_Raw', color: this.colors[0] },
+            { singal_name: 'RD_Raw_gc_coor', color: this.colors[1] },
+            { singal_name: 'ReadDepth', color: this.colors[2] },
+            { singal_name: '2D', color: this.colors[2] },
+            { singal_name: 'BAF1', color: this.colors[3] },
+            { singal_name: 'BAF2', color: this.colors[3] },
+        ];
+        return signal_colors
+    }
+
+    async postInit() {
+
+        if (this.config.format == 'vcf') {
+            this.featureSource = FeatureSource(this.config, this.browser.genome);
+            this.header = await this.getHeader();
+
+
+            var allVariants = this.featureSource.reader.features.reduce(function (r, a) {
+                r[a.chr] = r[a.chr] || [];
+                r[a.chr].push(a);
+                return r
+            }, Object.create(null));
+
+            const cnvpytor_obj = new CNVpytorVCF(allVariants, this.bin_size);
+            
+            let wigFeatures;
+            let bafFeatures;
+            this.wigFeatures_obj = {};
+            this.wigFeatures_obj[this.bin_size] = {};
+
+            let dataWigs;
+            if(this.config.cnv_caller == '2D'){
+                
+                dataWigs = await cnvpytor_obj.read_rd_baf('2D');
+
+                wigFeatures = dataWigs[0];
+                bafFeatures = dataWigs[1];
+                this.wigFeatures_obj[this.bin_size]['2D'] = wigFeatures[2];
+
+                this.available_callers = ['2D'];
+            }else {
+                dataWigs = await cnvpytor_obj.read_rd_baf();
+                wigFeatures = dataWigs[0];
+                bafFeatures = dataWigs[1];
+                this.wigFeatures_obj[this.bin_size]['ReadDepth'] = wigFeatures[2];
+                this.available_callers = ['ReadDepth'];
+            }
+            
+            this.wigFeatures_obj[this.bin_size]['RD_Raw'] = wigFeatures[0];
+            this.wigFeatures_obj[this.bin_size]['RD_Raw_gc_coor'] = wigFeatures[1];
+            this.wigFeatures_obj[this.bin_size]['BAF1'] = bafFeatures[0];
+            this.wigFeatures_obj[this.bin_size]['BAF2'] = bafFeatures[1];
+            
+            this.available_bins = [this.bin_size];
+            
+            this.set_available_callers();
+
+        } else {
+            this.cnvpytor_obj =   new HDF5Reader(this.config.url, this.bin_size);
+            this.wigFeatures_obj = await this.cnvpytor_obj.get_rd_signal(this.bin_size);
+            this.available_bins = this.cnvpytor_obj.available_bins;
+            this.available_callers = this.cnvpytor_obj.callers;
+            this.set_available_callers();
+        }
+
+        this.tracks = [];
+        const p = [];
+
+        this.signals = this.get_signals();
+        this.signal_colors = this.get_signal_colors();
+
+        for (let bin_size in this.wigFeatures_obj) {
+
+            for (const [signal_name, wig] of Object.entries(this.wigFeatures_obj[bin_size])) {
+
+                if (this.signals.includes(signal_name)) {
+                    let tconf = {};
+                    tconf.type = "wig";
+                    tconf.isMergedTrack = true;
+                    tconf.features = wig;
+                    tconf.name = signal_name;
+                    tconf.color = this.signal_colors.filter(x => x.singal_name === signal_name).map(x => x.color);
+                    const t = await this.browser.createTrack(tconf);
+                    if (t) {
+                        t.autoscale = false;     // Scaling done from merged track
+                        this.tracks.push(t);
+                    } else {
+                        console.warn("Could not create track " + tconf);
+                    }
+
+                    if (typeof t.postInit === 'function') {
+                        p.push(t.postInit());
+                    }
+                }
+            }
+
+        }
+
+
+        this.flipAxis = this.config.flipAxis ? this.config.flipAxis : false;
+        this.logScale = this.config.logScale ? this.config.logScale : false;
+        this.autoscale = this.config.autoscale;
+        if (!this.autoscale) {
+            this.dataRange = {
+                min: this.config.min || 0,
+                max: this.config.max
+            };
+        }
+        for (let t of this.tracks) {
+            t.autoscale = false;
+            t.dataRange = this.dataRange;
+        }
+
+        return Promise.all(p)
+    }
+
+    set_available_callers() {
+        if (!this.available_callers.includes(this.cnv_caller)) {
+            if (this.available_callers.length > 0) {
+                this.cnv_caller = this.available_callers[0];
+            } else {
+                this.cnv_caller = null;
+            }
+        }
+    }
+
+    async getHeader() {
+
+        if (!this.header) {
+            if (typeof this.featureSource.getHeader === "function") {
+                const header = await this.featureSource.getHeader();
+                if (header) {
+                    this.callSets = header.callSets || [];
+                }
+                this.header = header;
+            }
+            this.sampleNames = this.callSets ? this.callSets.map(cs => cs.name) : [];
+        }
+
+        return this.header
+    }
+
+    get height() {
+        return this._height
+    }
+
+    set height(h) {
+        this._height = h;
+        if (this.tracks) {
+            for (let t of this.tracks) {
+                t.height = h;
+                t.config.height = h;
+            }
+        }
+    }
+
+    menuItemList() {
+        let items = [];
+
+        if (this.flipAxis !== undefined) {
+            items.push({
+                label: "Flip y-axis",
+                click: () => {
+                    this.flipAxis = !this.flipAxis;
+                    this.trackView.repaintViews();
+                }
+            });
+        }
+
+        items = items.concat(MenuUtils.numericDataMenuItems(this.trackView));
+
+        items.push('<hr/>');
+        items.push("Bin Sizes");
+        for (let rd_bin of this.available_bins) {
+            const checkBox = createCheckbox(rd_bin, rd_bin === this.bin_size);
+            items.push({
+                object: $$1(checkBox),
+                click: async () => {
+                    this.bin_size = rd_bin;
+
+                    await this.recreate_tracks(rd_bin);
+                    this.clearCachedFeatures();
+                    this.trackView.updateViews();
+                    this.trackView.repaintViews();
+                }
+            });
+        }
+        items.push('<hr/>');
+        items.push("Signal Type");
+
+        let signal_dct = {"rd_snp": "RD and BAF Likelihood", "rd": "RD Signal", "snp": "BAF Likelihood"};
+        for (let signal_name in signal_dct) {
+            const checkBox = createCheckbox(signal_dct[signal_name], signal_name === this.signal_name);
+            items.push({
+                object: $$1(checkBox),
+                click: async () => {
+                    this.signal_name = signal_name;
+                    await this.recreate_tracks(this.bin_size);
+                    this.clearCachedFeatures();
+                    this.trackView.updateViews();
+                    this.trackView.repaintViews();
+
+                }
+            });
+        }
+
+        // cnv caller setting
+        items.push('<hr/>');
+        items.push("CNV caller");
+        for (let cnv_caller of this.available_callers) {
+            const checkBox = createCheckbox(cnv_caller, cnv_caller === this.cnv_caller);
+            items.push({
+                object: $$1(checkBox),
+                click: async () => {
+                    this.cnv_caller = cnv_caller;
+                    await this.recreate_tracks(this.bin_size);
+                    this.clearCachedFeatures();
+                    this.trackView.updateViews();
+                    this.trackView.repaintViews();
+                }
+            });
+        }
+
+        return items
+    }
+
+    async recreate_tracks(bin_size) {
+        this.tracks = [];
+        const p = [];
+
+        if (!(bin_size in this.wigFeatures_obj)) {
+            this.wigFeatures_obj = {...this.wigFeatures_obj, ...await this.cnvpytor_obj.get_rd_signal(bin_size)};
+        }
+
+        this.signals = this.get_signals();
+        this.signal_colors = this.get_signal_colors();
+
+        for (const [signal_name, wig] of Object.entries(this.wigFeatures_obj[bin_size])) {
+            if (this.signals.includes(signal_name)) {
+                let tconf = {};
+                tconf.type = "wig";
+                tconf.isMergedTrack = true;
+                tconf.features = wig;
+                tconf.name = signal_name;
+                tconf.color = this.signal_colors.filter(x => x.singal_name === signal_name).map(x => x.color); 
+                const t = await this.browser.createTrack(tconf);
+                if (t) {
+                    t.autoscale = false;     // Scaling done from merged track
+                    this.tracks.push(t);
+                } else {
+                    console.warn("Could not create track " + tconf);
+                }
+
+                if (typeof t.postInit === 'function') {
+                    p.push(t.postInit());
+                }
+            }
+
+        }
+
+
+        this.flipAxis = this.config.flipAxis ? this.config.flipAxis : false;
+        this.logScale = this.config.logScale ? this.config.logScale : false;
+        this.autoscale = this.config.autoscale;
+        if (!this.autoscale) {
+            this.dataRange = {
+                min: this.config.min || 0,
+                max: this.config.max
+            };
+        }
+        for (let t of this.tracks) {
+            t.autoscale = false;
+            t.dataRange = this.dataRange;
+        }
+        return Promise.all(p)
+    }
+
+    async getFeatures(chr, bpStart, bpEnd, bpPerPixel) {
+
+        if(this.tracks) {
+            const promises = this.tracks.map((t) => t.getFeatures(chr, bpStart, bpEnd, bpPerPixel));
+            return Promise.all(promises)
+        } else {
+            return undefined  // This can happen if a redraw is triggered before the track has initialized.
+        }
+    }
+
+    // TODO: refactor to igvUtils.js
+    getScaleFactor(min, max, height, logScale) {
+        const scale = logScale ? height / (Math.log10(max + 1) - (min <= 0 ? 0 : Math.log10(min + 1))) : height / (max - min);
+        return scale
+    }
+
+    computeYPixelValue(yValue, yScaleFactor) {
+        return (this.flipAxis ? (yValue - this.dataRange.min) : (this.dataRange.max - yValue)) * yScaleFactor
+    }
+
+    computeYPixelValueInLogScale(yValue, yScaleFactor) {
+        let maxValue = this.dataRange.max;
+        let minValue = this.dataRange.min;
+        if (maxValue <= 0) return 0 // TODO:
+        if (minValue <= -1) minValue = 0;
+        minValue = (minValue <= 0) ? 0 : Math.log10(minValue + 1);
+        maxValue = Math.log10(maxValue + 1);
+        yValue = Math.log10(yValue + 1);
+        return ((this.flipAxis ? (yValue - minValue) : (maxValue - yValue)) * yScaleFactor)
+    }
+
+    draw(options) {
+
+        // const mergedFeatures = options.features    // Array of feature arrays, 1 for each track
+        const mergedFeatures = options.features;
+        if(!mergedFeatures) return
+
+        if (this.defaultScale) {
+            if (this.signal_name == 'rd_snp') {
+                this.dataRange = {
+                    min: this.config.min || this.dataRange.min || -2,
+                    max: this.config.max || this.dataRange.max || 6
+                };
+            } else if (this.signal_name == 'rd') {
+                this.dataRange = {
+                    min: this.config.min || this.dataRange.min || 0,
+                    max: this.config.max || this.dataRange.max || 6
+                };
+            } else if (this.signal_name == 'snp') {
+                this.dataRange = {
+                    min: this.config.min || this.dataRange.min || -2,
+                    max: this.config.max || this.dataRange.max || 0
+                };
+            }
+        }
+
+        if (this.autoscale) {
+            this.dataRange = autoscale(options.referenceFrame.chr, mergedFeatures);
+        }
+
+        if(this.tracks) {
+            for (let i = 0, len = this.tracks.length; i < len; i++) {
+                const trackOptions = Object.assign({}, options);
+                trackOptions.features = mergedFeatures[i];
+                this.tracks[i].dataRange = this.dataRange;
+                this.tracks[i].flipAxis = this.flipAxis;
+                this.tracks[i].logScale = this.logScale;
+                if (this.graphType) {
+                    this.tracks[i].graphType = this.graphType;
+                }
+                this.tracks[i].draw(trackOptions);
+            }
+        }
+
+        // guides lines
+        const scaleFactor = this.getScaleFactor(this.dataRange.min, this.dataRange.max, options.pixelHeight, this.logScale);
+        const yScale = (yValue) => this.logScale
+            ? this.computeYPixelValueInLogScale(yValue, scaleFactor)
+            : this.computeYPixelValue(yValue, scaleFactor);
+
+         // Draw guidelines
+         if (this.config.hasOwnProperty('guideLines')) {
+            for (let line of this.config.guideLines) {
+                if (line.hasOwnProperty('color') && line.hasOwnProperty('y') && line.hasOwnProperty('dotted')) {
+                    let y = yScale(line.y);
+                    let props = {
+                        'strokeStyle': line['color'],
+                        'strokeWidth': 1
+                    };
+                    if (line['dotted']) IGVGraphics.dashedLine(options.context, 0, y, options.pixelWidth, y, 5, props);
+                    else IGVGraphics.strokeLine(options.context, 0, y, options.pixelWidth, y, props);
+                }
+            }
+        }
+    }
+
+    popupData(clickState, features) {
+
+        const featuresArray = features || clickState.viewport.cachedFeatures;
+
+        if (featuresArray && featuresArray.length === this.tracks.length) {
+            // Array of feature arrays, 1 for each track
+            const popupData = [];
+            for (let i = 0; i < this.tracks.length; i++) {
+                if (i > 0) popupData.push('<hr/>');
+                popupData.push(`<div style=background-color:rgb(245,245,245);border-bottom-style:dashed;border-bottom-width:1px;padding-bottom:5px;padding-top:10px;font-weight:bold;font-size:larger >${this.tracks[i].name}</div>`);
+                const trackPopupData = this.tracks[i].popupData(clickState, featuresArray[i]);
+                popupData.push(...trackPopupData);
+
+            }
+            return popupData
+        }
+    }
+
+}
+
+function autoscale(chr, featureArrays) {
+
+    let min = 0;
+    let max = -Number.MAX_VALUE;
+    for (let features of featureArrays) {
+        for (let f of features) {
+            if (typeof f.value !== 'undefined' && !Number.isNaN(f.value)) {
+                min = Math.min(min, f.value);
+                max = Math.max(max, f.value);
+            }
+        }
+    }
+    return {min: min, max: max}
+}
+
+//import CNVPytorTrack from "./CNVpytor/cnvpytorTrack.js"
+
+
+const trackFunctions =
+    new Map([
+        ['ideogram', (config, browser) => new IdeogramTrack(config, browser)],
+        ['sequence', (config, browser) => new SequenceTrack(config, browser)],
+        ['feature', (config, browser) => new FeatureTrack(config, browser)],
+        ['seg', (config, browser) => new SegTrack(config, browser)],
+        ['mut', (config, browser) => new SegTrack(config, browser)],
+        ['maf', (config, browser) => new SegTrack(config, browser)],
+        ['wig', (config, browser) => new WigTrack(config, browser)],
+        ['merged', (config, browser) => new MergedTrack(config, browser)],
+        ['alignment', (config, browser) => new BAMTrack(config, browser)],
+        ['interaction', (config, browser) => new InteractionTrack(config, browser)],
+        ['interact', (config, browser) => new InteractionTrack(config, browser)],
+        ['variant', (config, browser) => new VariantTrack(config, browser)],
+        ['eqtl', (config, browser) => new EqtlTrack(config, browser)],
+        ['gwas', (config, browser) => new GWASTrack(config, browser)],
+        ['arc', (config, browser) => new RnaStructTrack(config, browser)],
+        ['gcnv', (config, browser) => new GCNVTrack(config, browser)],
+        ['junction', (config, browser) => new SpliceJunctionTrack(config, browser)],
+        ['blat', (config, browser) => new BlatTrack(config, browser)],
+        ['cnvpytor', (config, browser) => new CNVPytorTrack(config, browser)]
+    ]);
+
+
+/**
+ * Add a track constructor  the the factory lookup table.
+ *
+ * @param type
+ * @param track
+ */
+const addTrackCreatorFunction = function (type, track) {
+    trackFunctions.set(type, track);
+};
+
+const getTrack = function (type, config, browser) {
+
+    let trackKey;
+    switch (type) {
+        case "annotation":
+        case "genes":
+        case "fusionjuncspan":
+        case "snp":
+            trackKey = "feature";
+            break
+        case 'seg':
+        case 'maf':
+        case 'mut':
+            trackKey = 'seg';
+            break
+        case 'junctions':
+        case 'splicejunctions':
+            trackKey = 'junction';
+            break
+        default:
+            trackKey = type;
+    }
+
+    return trackFunctions.has(trackKey) ?
+        trackFunctions.get(trackKey)(config, browser) :
+        undefined
+};
+
+var TrackFactory = {
+    tracks: trackFunctions,
+    addTrack: addTrackCreatorFunction,
+    trackFunctions,
+    addTrackCreatorFunction,
+    getTrack
+};
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2017 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+/**
+ * Minimal support for the legacy IGV desktop session format.
+ */
+
+class XMLSession {
+
+    constructor(xmlString, knownGenomes) {
+
+        const parser = new DOMParser();
+        const xmlDoc = parser.parseFromString(xmlString, "text/xml");
+
+        this.processRootNode(xmlDoc, knownGenomes);
+
+        const resourceElements = xmlDoc.getElementsByTagName("Resource");
+        const trackElements = xmlDoc.getElementsByTagName("Track");
+        const hasTrackElements = trackElements && trackElements.length > 0;
+
+        const tracks = [];
+        this.tracks = tracks;
+
+        const resourceMap = new Map();
+        Array.from(resourceElements).forEach(function (r, idx) {
+            var config = {
+                url: r.getAttribute("path"),
+                indexURL: r.getAttribute("index"),
+                order: idx
+            };
+            resourceMap.set(config.url, config);
+            if (!hasTrackElements) {
+                tracks.push(config);
+            }
+        });
+
+        // Check for optional Track section
+        if (hasTrackElements) {
+
+            Array.from(trackElements).forEach(function (track) {
+
+                const subtracks = track.getElementsByTagName("Track");
+
+                if (subtracks && subtracks.length > 0) {
+
+                    const mergedTrack = {
+                        type: 'merged',
+                        tracks: []
+                    };
+                    extractTrackAttributes(track, mergedTrack);
+
+                    tracks.push(mergedTrack);
+
+                    Array.from(subtracks).forEach(function (t) {
+                        t.processed = true;
+                        const id = t.getAttribute("id");
+                        const config = resourceMap.get(id);
+                        if (config) {
+                            mergedTrack.tracks.push(config);
+                            extractTrackAttributes(t, config);
+                            config.autoscale = false;
+                            mergedTrack.height = config.height;
+
+                            // Add alpha for merged track colors.  Alpha is not recorded by IGV desktop in XML session
+                            //const color = t.getAttribute("color");
+                            //if (color) {
+                            //    config.color = "rgba(" + color + ",0.5)";
+                            //}
+                        }
+                    });
+                } else if (!track.processed) {
+
+                    const id = track.getAttribute("id");
+                    const res = resourceMap.get(id);
+                    if (res) {
+                        tracks.push(res);
+                        extractTrackAttributes(track, res);
+                    }
+
+                }
+            });
+        }
+    }
+
+    processRootNode(xmlDoc, knownGenomes) {
+
+        const elements = xmlDoc.getElementsByTagName("Session");
+        if (!elements || elements.length === 0) ;
+        const session = elements.item(0);
+        const genome = session.getAttribute("genome");
+        const locus = session.getAttribute("locus");
+        const ucscID = session.getAttribute("ucscID");
+
+        if (knownGenomes && knownGenomes.hasOwnProperty(genome)) {
+            this.genome = genome;
+
+        } else {
+            this.reference = {
+                fastaURL: genome
+            };
+            if (ucscID) {
+                this.reference.id = ucscID;
+            }
+        }
+        if (locus) {
+            this.locus = locus;
+        }
+    }
+
+}
+
+
+function extractTrackAttributes(track, config) {
+
+
+    config.name = track.getAttribute("name");
+
+    const color = track.getAttribute("color");
+    if (color) {
+        config.color = "rgb(" + color + ")";
+    }
+
+    const altColor = track.getAttribute("altColor");
+    if (color) {
+        config.altColor = "rgb(" + altColor + ")";
+    }
+
+    const height = track.getAttribute("height");
+    if (height) {
+        config.height = parseInt(height);
+    }
+
+    const autoScale = track.getAttribute("autoScale");
+    if (autoScale) {
+        config.autoscale = (autoScale === "true");
+    }
+
+    const autoscaleGroup = track.getAttribute("autoscaleGroup");
+    if (autoscaleGroup) {
+        config.autoscaleGroup = autoscaleGroup;
+    }
+
+    const windowFunction = track.getAttribute("windowFunction");
+    if (windowFunction) {
+        config.windowFunction = windowFunction;
+    }
+    const visWindow = track.getAttribute("visibilityWindow") || track.getAttribute("featureVisibilityWindow");
+    if (visWindow) {
+        config.visibilityWindow = visWindow;
+    }
+
+    const indexed = track.getAttribute("indexed");
+    if (indexed) {
+        config.indexed = (indexed === "true");
+    }
+
+    const normalize = track.getAttribute("normalize");
+    if (normalize) {
+        config.normalize = normalize === "true";
+    }
+
+    const dataRangeCltn = track.getElementsByTagName("DataRange");
+    if (dataRangeCltn.length > 0) {
+        const dataRange = dataRangeCltn.item(0);
+        config.min = Number(dataRange.getAttribute("minimum"));
+        config.max = Number(dataRange.getAttribute("maximum"));
+        config.logScale = dataRange.getAttribute("type") === "LOG";
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014-2015 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const splitLines = splitLines$5;
+
+class SampleInformation {
+    constructor() {
+        this.attributes = {};
+        this.plinkLoaded = false;
+    }
+
+    async loadPlinkFile(url, config) {
+
+        if (!config) config = {};
+
+        var options = buildOptions(config);    // Add oauth token, if any
+        const data = await igvxhr.loadString(url, options);
+        var lines = splitLines(data);
+
+        for (let line of lines) {
+            var line_arr = line.split(' ');
+            this.attributes[line_arr[1]] = {
+                familyId: line_arr[0],
+                fatherId: line_arr[2],
+                motherId: line_arr[3],
+                sex: line_arr[4],
+                phenotype: line_arr[5]
+            };
+        }
+        this.plinkLoaded = true;
+        return this
+    }
+
+    /**
+     * Return the attributes for the given sample as a map-like object (key-value pairs)
+     * @param sample
+     */
+    getAttributes(sample) {
+        return this.attributes[sample]
+    };
+
+    getAttributeNames() {
+
+        if (this.hasAttributes()) {
+            return Object.keys(this.attributes[Object.keys(this.attributes)[0]])
+        } else return []
+    };
+
+    hasAttributes() {
+        return Object.keys(this.attributes).length > 0
+    }
+}
+
+function loadPlinkFile(url, config) {
+    const si = new SampleInformation();
+    return si.loadPlinkFile(url, config)
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class GtexSelection {
+
+    constructor(gene, snp) {
+        this.geneColors = {};
+        this.gene = null;
+        this.snp = null;
+        this.genesCount = 0;
+
+        if (gene) {
+            this.gene = gene.toUpperCase();
+            this.geneColors[this.gene] = brewer[this.genesCount++];
+
+        }
+        if (snp) {
+            this.snp = snp.toUpperCase();
+        }
+    }
+
+    addGene(geneName) {
+        if (!this.geneColors[geneName.toUpperCase()]) {
+            this.geneColors[geneName.toUpperCase()] = brewer[this.genesCount++];
+        }
+    }
+
+    colorForGene(geneName) {
+        return this.geneColors[geneName.toUpperCase()]
+    }
+}
+
+var brewer = [];
+// Set +!
+brewer.push("rgb(228,26,28)");
+brewer.push("rgb(55,126,184)");
+brewer.push("rgb(77,175,74)");
+brewer.push("rgb(166,86,40)");
+brewer.push("rgb(152,78,163)");
+brewer.push("rgb(255,127,0)");
+brewer.push("rgb(247,129,191)");
+brewer.push("rgb(153,153,153)");
+brewer.push("rgb(255,255,51)");
+
+// #Set 2
+brewer.push("rgb(102, 194, 165");
+brewer.push("rgb(252, 141, 98");
+brewer.push("rgb(141, 160, 203");
+brewer.push("rgb(231, 138, 195");
+brewer.push("rgb(166, 216, 84");
+brewer.push("rgb(255, 217, 47");
+brewer.push("rgb(229, 196, 148");
+brewer.push("rgb(179, 179, 179");
+
+//#Set 3
+brewer.push("rgb( 141, 211, 199");
+brewer.push("rgb(255, 255, 179");
+brewer.push("rgb(190, 186, 218");
+brewer.push("rgb(251, 128, 114");
+brewer.push("rgb(128, 177, 211");
+brewer.push("rgb(253, 180, 98");
+brewer.push("rgb(179, 222, 105");
+brewer.push("rgb(252, 205, 229");
+brewer.push("rgb(217, 217, 217");
+brewer.push("rgb(188, 128, 189");
+brewer.push("rgb(204, 235, 197");
+brewer.push("rgb(255, 237, 111");
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+// Reference frame classes.  Converts domain coordinates (usually genomic) to pixel coordinates
+
+class ReferenceFrame {
+
+    constructor(genome, chr, start, end, bpPerPixel) {
+        this.genome = genome;
+        this.chr = chr;
+
+        this.start = start;
+
+        // TODO WARNING THIS IS NOT UPDATED !!!
+        this.end = end;
+
+        this.bpPerPixel = bpPerPixel;
+        this.id = domUtils.guid();
+    }
+
+    /**
+     * Extend this frame to accomodate the given locus.  Used th CircularView methods to merge 2 frames.
+     * @param locus
+     */
+    extend(locus) {
+        const newStart = Math.min(locus.start, this.start);
+        const newEnd = Math.max(locus.end, this.end);
+        const ratio = (newEnd - newStart) / (this.end - this.start);
+        this.start = newStart;
+        this.end = newEnd;
+        this.bpPerPixel *= ratio;
+    }
+
+    calculateEnd(pixels) {
+        return this.start + this.bpPerPixel * pixels
+    }
+
+    calculateBPP(end, pixels) {
+        return (end - this.start) / pixels
+    }
+
+    set(json) {
+        this.chr = json.chr;
+        this.start = json.start;
+        this.bpPerPixel = json.bpPerPixel;
+    }
+
+    toPixels(bp) {
+        return bp / this.bpPerPixel
+    }
+
+    toBP(pixels) {
+        return this.bpPerPixel * pixels
+    }
+
+    /**
+     * Shift frame by stated pixels.  Return true if view changed, false if not.
+     *
+     * @param pixels
+     * @param clamp -- if true "clamp" shift to prevent panning off edge of chromosome.  This is disabled if "show soft clipping" is on
+     * @param viewportWidth
+     */
+    shiftPixels(pixels, viewportWidth, clamp) {
+
+        const currentStart = this.start;
+        const deltaBP = pixels * this.bpPerPixel;
+
+        this.start += deltaBP;
+
+        if(clamp) {
+            this.clampStart(viewportWidth);
+        }
+
+        this.end = this.start + viewportWidth * this.bpPerPixel;
+
+        return currentStart !== this.start
+    }
+
+    clampStart(viewportWidth) {
+        // clamp left
+        const min = (this.genome.getChromosome(this.chr).bpStart || 0);
+        this.start = Math.max(min, this.start);
+
+        // clamp right
+        if (viewportWidth) {
+
+            const {bpLength} = this.genome.getChromosome(this.chr);
+            const maxStart = bpLength - (viewportWidth * this.bpPerPixel);
+
+            if (this.start > maxStart) {
+                this.start = maxStart;
+            }
+        }
+    }
+
+    async zoomWithScaleFactor(browser, scaleFactor, viewportWidth, centerBPOrUndefined) {
+
+        const centerBP = undefined === centerBPOrUndefined ? (this.start + this.toBP(viewportWidth / 2.0)) : centerBPOrUndefined;
+
+        // save initial start and bpp
+        const {start, bpPerPixel} = this.start;
+
+        const {bpLength} = this.getChromosome();
+        const bppThreshold = scaleFactor < 1.0 ? browser.minimumBases() / viewportWidth : bpLength / viewportWidth;
+
+        // update bpp
+        if (scaleFactor < 1.0) {
+            this.bpPerPixel = Math.max(this.bpPerPixel * scaleFactor, bppThreshold);
+        } else {
+            this.bpPerPixel = Math.min(this.bpPerPixel * scaleFactor, bppThreshold);
+        }
+
+        // update start and end
+        const widthBP = this.bpPerPixel * viewportWidth;
+        this.start = centerBP - 0.5 * widthBP;
+        this.clampStart(viewportWidth);
+
+        this.end = this.start + widthBP;
+
+        const viewChanged = start !== this.start || bpPerPixel !== this.bpPerPixel;
+        if (viewChanged) {
+            await browser.updateViews(true);
+        }
+
+    }
+
+    getChromosome() {
+        return this.genome.getChromosome(this.chr)
+    }
+
+    getMultiLocusLabelBPLengthOnly(pixels) {
+        const margin = '&nbsp';
+        const ss = Math.floor(this.start) + 1;
+        const ee = Math.round(this.start + this.bpPerPixel * pixels);
+        return `${margin}${this.chr}${margin}${prettyBasePairNumber(ee - ss)}${margin}`
+    }
+
+    getMultiLocusLabelLocusOnly(pixels) {
+        const margin = '&nbsp';
+        const {chr, start, end } = this.getPresentationLocusComponents(pixels);
+        return `${margin}${chr}:${start}-${end}${margin}`
+    }
+
+    getMultiLocusLabel(pixels) {
+        const margin = '&nbsp';
+        const {chr, start, end } = this.getPresentationLocusComponents(pixels);
+        const ss = Math.floor(this.start) + 1;
+        const ee = Math.round(this.start + this.bpPerPixel * pixels);
+        return `${margin}${chr}:${start}-${end}${margin}${margin}(${prettyBasePairNumber(ee - ss)})${margin}`
+    }
+
+    getPresentationLocusComponents(pixels) {
+
+        if ('all' === this.chr) {
+            return {chr: this.chr}
+        } else {
+            const ss = numberFormatter$1(Math.floor(this.start) + 1);
+            const ee = numberFormatter$1(Math.round(this.start + this.bpPerPixel * pixels));
+
+            return {chr: this.chr, start: ss, end: ee}
+        }
+
+    }
+
+    getLocusString() {
+        if ('all' === this.chr) {
+            return 'all'
+        } else {
+            const ss = numberFormatter$1(Math.floor(this.start) + 1);
+            const ee = numberFormatter$1(Math.round(this.end));
+            return `${this.chr}:${ss}-${ee}`
+        }
+    }
+
+    description(blurb) {
+        console.log(` ${blurb || ''} referenceFrame - ${this.chr} bpp ${this.bpPerPixel.toFixed(3)} start ${numberFormatter$1(Math.round(this.start))} end ${numberFormatter$1(Math.round(this.end))} `);
+    }
+}
+
+function createReferenceFrameList(loci, genome, browserFlanking, minimumBases, viewportWidth, isSoftclipped) {
+
+    return loci.map(locus => {
+
+        // If a flanking region is defined, and the search object is a symbol ("gene") type, adjust start and end
+        if (browserFlanking && locus.gene) {
+            locus.start = Math.max(0, locus.start - browserFlanking);
+            locus.end += browserFlanking;
+        }
+
+        // Validate the range.  This potentionally modifies start & end of locus.
+        if(!isSoftclipped) {
+            const chromosome = genome.getChromosome(locus.chr);
+            validateGenomicExtent(chromosome.bpLength, locus, minimumBases);
+        }
+
+        const referenceFrame = new ReferenceFrame(genome,
+            locus.chr,
+            locus.start,
+            locus.end,
+            (locus.end - locus.start) / viewportWidth);
+
+        referenceFrame.locusSearchString = locus.locusSearchString;
+
+        // GTEX hack
+        if (locus.gene || locus.snp) {
+            referenceFrame.selection = new GtexSelection(locus.gene, locus.snp);
+        }
+
+        return referenceFrame
+    })
+}
+
+const DEFAULT_SEARCH_CONFIG = {
+    timeout: 5000,
+    type: "plain",   // Legacy plain text support -- deprecated
+    url: 'https://igv.org/genomes/locus.php?genome=$GENOME$&name=$FEATURE$',
+    coords: 0,
+    chromosomeField: "chromosome",
+    startField: "start",
+    endField: "end",
+    geneField: "gene",
+    snpField: "snp"
+};
+
+/**
+ * Return an object representing the locus of the given string.  Object is of the form
+ * {
+ *   chr,
+ *   start,
+ *   end,
+ *   locusSearchString,
+ *   gene,
+ *   snp
+ * }
+ * @param browser
+ * @param string
+ * @returns {Promise<*>}
+ */
+async function search(browser, string) {
+
+    if (undefined === string || '' === string.trim()) {
+        return
+    }
+
+    if (string && string.trim().toLowerCase() === "all" || string === "*") {
+        string = "all";
+    }
+
+    const loci = string.split(' ');
+
+    let searchConfig = browser.searchConfig || DEFAULT_SEARCH_CONFIG;
+    let list = [];
+
+    const searchLocus = async (locus) => {
+        let locusObject = parseLocusString(browser, locus);
+
+        if (!locusObject) {
+            const feature = browser.genome.featureDB.get(locus.toUpperCase());
+            if (feature) {
+                locusObject = {
+                    chr: feature.chr,
+                    start: feature.start,
+                    end: feature.end,
+                    gene: feature.name,
+                    locusSearchString: string
+                };
+            }
+        }
+
+        if (!locusObject && (browser.config && false !== browser.config.search)) {
+            try {
+                locusObject = await searchWebService(browser, locus, searchConfig);
+            } catch (error) {
+                console.error(error);
+                throw Error("Search service currently unavailable.")
+            }
+        }
+        return locusObject
+    };
+
+    for (let locus of loci) {
+        const locusObject = await searchLocus(locus);
+        if (locusObject) {
+            locusObject.locusSearchString = locus;
+            list.push(locusObject);
+        }
+    }
+
+    // If nothing is found, consider possibility that loci name itself has spaces
+    if (list.length === 0) {
+        const locusObject = await searchLocus(string);
+        if (locusObject) {
+            locusObject.locusSearchString = string;
+            list.push(locusObject);
+        }
+    }
+
+
+    return 0 === list.length ? undefined : list
+}
+
+function parseLocusString(browser, locus) {
+
+    // Check for tab delimited locus string
+    const tabTokens = locus.split('\t');
+    if (tabTokens.length >= 3) {
+        // Possibly a tab-delimited locus
+        try {
+            const chr = browser.genome.getChromosomeName(tabTokens[0]);
+            const start = parseInt(tabTokens[1].replace(/,/g, ''), 10) - 1;
+            const end = parseInt(tabTokens[2].replace(/,/g, ''), 10);
+            if (!isNaN(start) && !isNaN(end)) {
+                return {chr, start, end}
+            }
+        } catch (e) {
+            // Not a tab delimited locus, apparently, but not really an error as that was a guess
+        }
+
+    }
+
+    const a = locus.split(':');
+    const chr = a[0];
+    if ('all' === chr && browser.genome.getChromosome(chr)) {
+        return {chr, start: 0, end: browser.genome.getChromosome(chr).bpLength}
+
+    } else if (undefined === browser.genome.getChromosome(chr)) {
+        return undefined
+
+    } else {
+        const queryChr = browser.genome.getChromosomeName(chr);
+        const extent = {
+            chr: queryChr,
+            start: 0,
+            end: browser.genome.getChromosome(chr).bpLength
+        };
+
+        if (a.length > 1) {
+
+            let b = a[1].split('-');
+            if (b.length > 2) {
+                // Allow for negative coordinates, which is possible if showing alignment soft clips
+                if (a[1].startsWith('-')) {
+                    const i = a[1].indexOf('-', 1);
+                    if (i > 0) {
+                        const t1 = a[1].substring(0, i);
+                        const t2 = a[1].substring(i + 1);
+                        b = [t1, t2];
+                    }
+                } else {
+                    return undefined
+                }
+
+            }
+
+            let numeric;
+            numeric = b[0].replace(/,/g, '');
+            if (isNaN(numeric)) {
+                return undefined
+            }
+
+            extent.start = parseInt(numeric, 10) - 1;
+            extent.end = extent.start + 1;
+
+            if (1 === b.length) {
+                // Don't clamp coordinates if single coordinate is supplied.
+                extent.start -= 20;
+                extent.end += 20;
+            }
+
+            if (2 === b.length) {
+                numeric = b[1].replace(/,/g, '');
+                if (isNaN(numeric)) {
+                    return undefined
+                } else {
+                    extent.end = parseInt(numeric, 10);
+                }
+
+                // Allow negative coordinates only if browser is softclipped, i.e. there is at least alignment track with softclipping on
+                if (extent.start < 0 && !browser.isSoftclipped()) {
+                    const delta = -extent.start;
+                    extent.start += delta;
+                    extent.end += delta;
+                }
+            }
+        }
+
+        return extent
+    }
+}
+
+async function searchWebService(browser, locus, searchConfig) {
+
+    let path = searchConfig.url.replace("$FEATURE$", locus.toUpperCase());
+    if (path.indexOf("$GENOME$") > -1) {
+        path = path.replace("$GENOME$", (browser.genome.id ? browser.genome.id : "hg19"));
+    }
+    const options = searchConfig.timeout ? {timeout: searchConfig.timeout} : undefined;
+    const result = await igvxhr.loadString(path, options);
+
+    const locusObject = processSearchResult(browser, result, searchConfig);
+    if (locusObject) {
+        locusObject.locusSearchString = locus;
+    }
+    return locusObject
+}
+
+function processSearchResult(browser, result, searchConfig) {
+
+    let results;
+
+    if ('plain' === searchConfig.type) {
+        results = parseSearchResults(browser, result);
+    } else {
+        results = JSON.parse(result);
+    }
+
+    if (searchConfig.resultsField) {
+        results = results[searchConfig.resultsField];
+    }
+
+    if (!results || 0 === results.length) {
+        return undefined
+
+    } else {
+
+        const chromosomeField = searchConfig.chromosomeField || "chromosome";
+        const startField = searchConfig.startField || "start";
+        const endField = searchConfig.endField || "end";
+        const coords = searchConfig.coords || 1;
+
+
+        let result;
+        if (Array.isArray(results)) {
+            // Ignoring all but first result for now
+            // TODO -- present all and let user select if results.length > 1
+            result = results[0];
+        } else {
+            // When processing search results from Ensembl REST API
+            // Example: https://rest.ensembl.org/lookup/symbol/macaca_fascicularis/BRCA2?content-type=application/json
+            result = results;
+        }
+
+        if (!(result.hasOwnProperty(chromosomeField) && (result.hasOwnProperty(startField)))) {
+            console.error("Search service results must include chromosome and start fields: " + result);
+        }
+
+        const chrResult = result[chromosomeField];
+        const chromosome = browser.genome.getChromosome(chrResult);
+        if (!chromosome) {
+            return undefined
+        }
+        const chr = chromosome.name;
+
+        let start = result[startField] - coords;
+        let end = result[endField];
+        if (undefined === end) {
+            end = start + 1;
+        }
+
+        const locusObject = {chr, start, end};
+
+        // Some GTEX hacks
+        const type = result.type ? result.type : "gene";
+        if (searchConfig.geneField && type === "gene") {
+            locusObject.gene = result[searchConfig.geneField];
+        }
+        if (searchConfig.snpField && type === "snp") {
+            locusObject.snp = result[searchConfig.snpField];
+        }
+
+        return locusObject
+    }
+}
+
+/**
+ * Parse the igv line-oriented (non json) search results.
+ * Example
+ *    EGFR    chr7:55,086,724-55,275,031    refseq
+ *
+ */
+function parseSearchResults(browser, data) {
+
+    const linesTrimmed = [];
+    const results = [];
+    const lines = splitLines$5(data);
+
+    lines.forEach(function (item) {
+        if ("" === item) ; else {
+            linesTrimmed.push(item);
+        }
+    });
+
+    linesTrimmed.forEach(function (line) {
+
+        var tokens = line.split("\t"),
+            source,
+            locusTokens,
+            rangeTokens,
+            obj;
+
+        if (tokens.length >= 3) {
+
+            locusTokens = tokens[1].split(":");
+            rangeTokens = locusTokens[1].split("-");
+            source = tokens[2].trim();
+
+            obj =
+                {
+                    gene: tokens[0],
+                    chromosome: browser.genome.getChromosomeName(locusTokens[0].trim()),
+                    start: parseInt(rangeTokens[0].replace(/,/g, '')),
+                    end: parseInt(rangeTokens[1].replace(/,/g, '')),
+                    type: ("gtex" === source ? "snp" : "gene")
+                };
+
+            results.push(obj);
+
+        }
+
+    });
+
+    return results
+
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class NavbarManager {
+
+    constructor(browser) {
+        this.browser = browser;
+    }
+
+    navbarDidResize(width) {
+        this.updateNavbar(this.createResponsiveClassSchedule(width));
+    }
+
+    updateNavbar(responsiveClassSchedule) {
+
+        this.browser.$toggle_button_container.removeClass();
+        this.browser.$toggle_button_container.addClass(responsiveClassSchedule.$toggle_button_container);
+
+        $$1(this.browser.zoomWidget.zoomContainer).removeClass();
+        $$1(this.browser.zoomWidget.zoomContainer).addClass(responsiveClassSchedule.zoomContainer);
+    }
+
+    createResponsiveClassSchedule(navbarWidth) {
+
+        let candidates = {};
+
+        const isWGV = this.browser.isMultiLocusWholeGenomeView() ||
+            (this.browser.referenceFrameList &&
+                GenomeUtils.isWholeGenomeView(this.browser.referenceFrameList[0].chr));
+
+
+        if (isWGV) {
+            this.browser.windowSizePanel.hide();
+        } else {
+            this.browser.windowSizePanel.show();
+        }
+
+        if (navbarWidth > 990) {
+            candidates.$toggle_button_container = 'igv-navbar-toggle-button-container';
+            candidates.zoomContainer = 'igv-zoom-widget';
+        } else if (navbarWidth > 860) {
+            candidates.$toggle_button_container = 'igv-navbar-toggle-button-container';
+            candidates.zoomContainer = 'igv-zoom-widget-900';
+        } else if (navbarWidth > 540) {
+            candidates.$toggle_button_container = 'igv-navbar-toggle-button-container-750';
+            candidates.zoomContainer = 'igv-zoom-widget-900';
+        } else {
+            candidates.$toggle_button_container = 'igv-navbar-toggle-button-container-750';
+            candidates.zoomContainer = 'igv-zoom-widget-900';
+            this.browser.windowSizePanel.hide();
+        }
+
+        if (isWGV) {
+            candidates['zoomContainer'] = 'igv-zoom-widget-hidden';
+        }
+
+        return candidates
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016-2017 The Regents of the University of California
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const ChromosomeSelectWidget = function (browser, parent) {
+
+    this.container = domUtils.div({class: 'igv-chromosome-select-widget-container'});
+    parent.appendChild(this.container);
+
+    this.select = document.createElement('select');
+    this.select.setAttribute('name', 'chromosome-select-widget');
+    this.container.appendChild(this.select);
+
+    this.select.addEventListener('change', () => {
+        this.select.blur();
+        if (this.select.value !== '') {
+            browser.search(this.select.value);
+        }
+    });
+
+    this.showAllChromosomes = browser.config.showAllChromosomes !== false;   // i.e. default to true
+
+};
+
+ChromosomeSelectWidget.prototype.show = function () {
+    this.container.style.display = 'flex';
+};
+
+ChromosomeSelectWidget.prototype.hide = function () {
+    this.container.style.display = 'none';
+};
+
+ChromosomeSelectWidget.prototype.update = function (genome) {
+
+    const list = this.showAllChromosomes ? genome.chromosomeNames.slice() : genome.wgChromosomeNames.slice();
+    // console.log(`${ this.showAllChromosomes ? 'Do' : 'Do not'} show all chromosomes. List ${ list }`)
+
+    if (genome.showWholeGenomeView()) {
+        list.unshift('all');
+        list.unshift('');
+    }
+
+    this.select.innerHTML = '';
+
+    for (let name of list) {
+        const option = document.createElement('option');
+        option.setAttribute('value', name);
+        option.innerText = name;
+        this.select.appendChild(option);
+    }
+
+};
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class WindowSizePanel {
+    constructor(parent, browser) {
+
+        this.container = domUtils.div({class: 'igv-windowsize-panel-container'});
+        parent.appendChild(this.container);
+
+        browser.on('locuschange', (referenceFrameList) => {
+            this.updatePanel(referenceFrameList);
+        });
+
+        this.browser = browser;
+
+    }
+
+    show() {
+        this.container.style.display = 'block';
+    }
+
+    hide() {
+        this.container.style.display = 'none';
+    }
+
+    updatePanel(referenceFrameList) {
+        const width = this.browser.calculateViewportWidth(this.browser.referenceFrameList.length);
+        this.container.innerText = 1 === referenceFrameList.length ? prettyBasePairNumber(Math.round(width * referenceFrameList[0].bpPerPixel)) : '';
+    }
+}
+
+class CursorGuide {
+
+    constructor(columnContainer, browser) {
+        this.browser = browser;
+        this.columnContainer = columnContainer;
+
+        this.horizontalGuide = domUtils.div({class: 'igv-cursor-guide-horizontal'});
+        columnContainer.appendChild(this.horizontalGuide);
+
+        this.verticalGuide = domUtils.div({class: 'igv-cursor-guide-vertical'});
+        columnContainer.appendChild(this.verticalGuide);
+
+        this.addMouseHandler(browser);
+
+        this.setVisibility(browser.config.showCursorGuide);
+
+    }
+
+    addMouseHandler(browser) {
+
+        this.boundMouseMoveHandler = mouseMoveHandler.bind(this);
+        this.columnContainer.addEventListener('mousemove', this.boundMouseMoveHandler);
+
+        function mouseMoveHandler(event) {
+
+            const {x, y} = domUtils.translateMouseCoordinates(event, this.columnContainer);
+            this.horizontalGuide.style.top = `${y}px`;
+
+            const target = document.elementFromPoint(event.clientX, event.clientY);
+
+            const viewport = findAncestorOfClass(target, 'igv-viewport');
+
+            if (viewport && browser.getRulerTrackView()) {
+
+                this.verticalGuide.style.left = `${x}px`;
+
+                const columns = browser.root.querySelectorAll('.igv-column');
+                let index = undefined;
+                const viewportParent = viewport.parentElement;
+                for (let i = 0; i < columns.length; i++) {
+                    if (undefined === index && viewportParent === columns[i]) {
+                        index = i;
+                    }
+                }
+
+                const rulerViewport = browser.getRulerTrackView().viewports[index];
+                const result = rulerViewport.mouseMove(event);
+
+                if (result) {
+
+                    const {start, bp, end} = result;
+                    const interpolant = (bp - start) / (end - start);
+
+                    if (this.customMouseHandler) {
+                        this.customMouseHandler({start, bp, end, interpolant});
+                    }
+                }
+            }
+
+        }
+    }
+
+    removeMouseHandler() {
+        this.columnContainer.removeEventListener('mousemove', this.boundMouseMoveHandler);
+    }
+
+    setVisibility(showCursorGuide) {
+        if (true === showCursorGuide) {
+            this.show();
+        } else {
+            this.hide();
+        }
+    }
+
+    show() {
+        this.verticalGuide.style.display = 'block';
+        this.horizontalGuide.style.display = 'block';
+
+    }
+
+    hide() {
+
+        this.verticalGuide.style.display = 'none';
+        this.horizontalGuide.style.display = 'none';
+
+        if (this.browser.getRulerTrackView()) {
+            for (let viewport of this.browser.getRulerTrackView().viewports) {
+                viewport.$tooltip.hide();
+            }
+        }
+
+    }
+
+}
+
+/**
+ * Walk up the tree until a parent is found with the given classname.  If no ancestor is found return undefined.
+ * @param target
+ * @param classname
+ * @returns {*}
+ */
+function findAncestorOfClass(target, classname) {
+
+    while (target.parentElement) {
+        if (target.parentElement.classList.contains(classname)) {
+            return target.parentElement
+        } else {
+            target = target.parentElement;
+        }
+    }
+    return undefined
+
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 University of California San Diego
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class CursorGuideButton {
+
+    constructor(browser, parent) {
+
+        this.browser = browser;
+
+        this.button = domUtils.div({class: 'igv-navbar-button'});
+        parent.appendChild(this.button);
+
+        this.button.textContent = 'cursor guide';
+
+        this.button.addEventListener('click', () => {
+            browser.cursorGuideVisible = !browser.cursorGuideVisible;
+            browser.setCursorGuideVisibility(browser.cursorGuideVisible);
+            this.setButtonState(browser.cursorGuideVisible);
+        });
+
+        this.setButtonState(browser.cursorGuideVisible);
+
+        if (browser.config.showCursorTrackingGuideButton) {
+            this.show();
+        } else {
+            this.hide();
+        }
+
+    }
+
+    setButtonState(cursorGuideVisible) {
+        if (true === cursorGuideVisible) {
+            this.button.classList.add('igv-navbar-button-clicked');
+        } else {
+            this.button.classList.remove('igv-navbar-button-clicked');
+        }
+    }
+
+    show() {
+        this.button.style.display = 'block';
+        this.setButtonState(this.browser.cursorGuideVisible);
+    }
+
+    hide() {
+        this.button.style.display = 'none';
+    }
+}
+
+class CenterLineButton {
+
+    constructor(browser, parent) {
+
+        this.browser = browser;
+
+        this.button = domUtils.div({class: 'igv-navbar-button'});
+        parent.appendChild(this.button);
+
+        this.button.textContent = 'center line';
+
+        this.button.addEventListener('click', () => {
+            browser.isCenterLineVisible = !browser.isCenterLineVisible;
+            browser.setCenterLineVisibility(browser.isCenterLineVisible);
+            this.setButtonState(browser.isCenterLineVisible);
+        });
+
+        this.setButtonState(browser.isCenterLineVisible);
+
+        if (browser.config.showCenterGuideButton) {
+            this.show();
+        } else {
+            this.hide();
+        }
+    }
+
+    setButtonState(isCenterLineVisible) {
+        if (true === isCenterLineVisible) {
+            this.button.classList.add('igv-navbar-button-clicked');
+        } else {
+            this.button.classList.remove('igv-navbar-button-clicked');
+        }
+    }
+
+    show() {
+        this.isVisible = true;
+        this.button.style.display = 'block';
+        this.setButtonState(this.browser.isCenterLineVisible);
+    }
+
+    hide() {
+        this.isVisible = false;
+        this.button.style.display = 'none';
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 University of California San Diego
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class TrackLabelControl {
+
+    constructor(parent, browser) {
+
+        this.button = domUtils.div({class: 'igv-navbar-button'});
+        parent.appendChild(this.button);
+        this.button.textContent = 'track labels';
+
+        this.button.addEventListener('click', () => {
+            browser.trackLabelsVisible = !browser.trackLabelsVisible;
+            this.setState(browser.trackLabelsVisible);
+            browser.setTrackLabelVisibility(browser.trackLabelsVisible);
+        });
+
+        this.browser = browser;
+
+        this.setVisibility(browser.config.showTrackLabelButton);
+
+        this.setState(browser.trackLabelsVisible);
+    }
+
+    setVisibility(showTrackLabelButton) {
+        if (true === showTrackLabelButton) {
+            this.show();
+        } else {
+            this.hide();
+        }
+    }
+
+    setState(trackLabelsVisible) {
+        if (true === trackLabelsVisible) {
+            this.button.classList.add('igv-navbar-button-clicked');
+        } else {
+            this.button.classList.remove('igv-navbar-button-clicked');
+        }
+    }
+
+    show() {
+        this.button.style.display = 'block';
+        this.setState(this.browser.trackLabelsVisible);
+    }
+
+    hide() {
+        this.button.style.display = 'none';
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 University of California San Diego
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class SampleNameControl {
+
+    constructor(parent, browser) {
+
+        this.button = domUtils.div({class: 'igv-navbar-button'});
+        parent.appendChild(this.button);
+
+        this.button.innerText = 'Sample Names';
+
+        this.setState(browser.showSampleNames);
+
+        this.setVisibility(browser.showSampleNameButton);
+
+        this.button.addEventListener('click', () => {
+
+            browser.showSampleNames = !browser.showSampleNames;
+
+            this.setState(browser.showSampleNames);
+
+            for (let {sampleNameViewport} of browser.trackViews) {
+                if (false === browser.showSampleNames) {
+                    sampleNameViewport.hide();
+                } else {
+                    sampleNameViewport.show();
+                }
+            }
+
+            browser.layoutChange();
+
+
+        });
+
+    }
+
+    setVisibility(showSampleNameButton) {
+
+        if (true === showSampleNameButton) {
+            this.show();
+        } else {
+            this.hide();
+        }
+    }
+
+    setState(showSampleNames) {
+        if (true === showSampleNames) {
+            this.button.classList.add('igv-navbar-button-clicked');
+        } else {
+            this.button.classList.remove('igv-navbar-button-clicked');
+        }
+    }
+
+    hide() {
+        this.button.style.display = 'none';
+    }
+
+    show() {
+        this.button.style.display = 'block';
+    }
+
+}
+
+const sliderMin = 0;
+let sliderMax = 23;
+let sliderValueRaw = 0;
+
+const ZoomWidget = function (browser, parent) {
+
+    this.browser = browser;
+
+    this.zoomContainer = domUtils.div({class: 'igv-zoom-widget'});
+    parent.appendChild(this.zoomContainer);
+
+    // zoom out
+    this.zoomOutButton = domUtils.div();
+    this.zoomContainer.appendChild(this.zoomOutButton);
+    this.zoomOutButton.appendChild(icons$1.createIcon('minus-circle'));
+    this.zoomOutButton.addEventListener('click', () => {
+        // browser.zoomWithScaleFactor(2.0)
+        browser.zoomOut();
+    });
+
+    // Range slider
+    const el = domUtils.div();
+    this.zoomContainer.appendChild(el);
+    this.slider = document.createElement('input');
+    this.slider.type = 'range';
+
+    this.slider.min = `${sliderMin}`;
+    this.slider.max = `${sliderMax}`;
+
+    el.appendChild(this.slider);
+
+    this.slider.addEventListener('change', e => {
+
+        e.preventDefault();
+        e.stopPropagation();
+
+        const referenceFrame = browser.referenceFrameList[0];
+        const {bpLength} = referenceFrame.genome.getChromosome(referenceFrame.chr);
+        const {end, start} = referenceFrame;
+
+        const extent = end - start;
+
+        // bpLength/(end - start)
+        const scaleFactor = Math.pow(2, e.target.valueAsNumber);
+
+        // (end - start) = bpLength/scaleFactor
+        const zoomedExtent = bpLength / scaleFactor;
+
+        // console.log(`zoom-widget - slider ${ e.target.value } scaleFactor ${ scaleFactor } extent-zoomed ${ StringUtils.numberFormatter(Math.round(zoomedExtent)) }`)
+
+        browser.zoomWithScaleFactor(zoomedExtent / extent);
+
+    });
+
+    // zoom in
+    this.zoomInButton = domUtils.div();
+    this.zoomContainer.appendChild(this.zoomInButton);
+    this.zoomInButton.appendChild(icons$1.createIcon('plus-circle'));
+    this.zoomInButton.addEventListener('click', () => {
+        // browser.zoomWithScaleFactor(0.5)
+        browser.zoomIn();
+    });
+
+    browser.on('locuschange', (referenceFrameList) => {
+
+        if (this.browser.isMultiLocusMode()) {
+            this.disable();
+        } else {
+            this.enable();
+            this.update(referenceFrameList);
+        }
+
+    });
+
+};
+
+ZoomWidget.prototype.update = function (referenceFrameList) {
+
+    const referenceFrame = referenceFrameList[0];
+    const {bpLength} = referenceFrame.genome.getChromosome(referenceFrame.chr);
+    const {start, end} = referenceFrame;
+
+    sliderMax = Math.ceil(Math.log2(bpLength / this.browser.minimumBases()));
+
+    this.slider.max = `${sliderMax}`;
+
+    const scaleFactor = bpLength / (end - start);
+    sliderValueRaw = Math.log2(scaleFactor);
+    this.slider.value = `${Math.round(sliderValueRaw)}`;
+
+    // referenceFrame.description('zoom.update')
+
+    // console.log(`${ Date.now() } update - slider ${ this.slider.value } scaleFactor ${ Math.round(scaleFactor) } extent ${ StringUtils.numberFormatter(Math.round(extent)) }`)
+
+    // console.log(`update - sliderMin ${ sliderMin } sliderValue ${ this.slider.value } sliderMax ${ sliderMax } scaleFactor ${ scaleFactor.toFixed(3) } derived-scaleFactor ${ derivedScalefactor.toFixed(3) }`)
+
+};
+
+ZoomWidget.prototype.enable = function () {
+
+    // this.zoomInButton.style.color = appleCrayonPalette[ 'steel' ];
+    // this.zoomInButton.style.pointerEvents = 'auto';
+    //
+    // this.zoomOutButton.style.color = appleCrayonPalette[ 'steel' ];
+    // this.zoomOutButton.style.pointerEvents = 'auto';
+
+    this.slider.disabled = false;
+};
+
+ZoomWidget.prototype.disable = function () {
+
+    // this.zoomInButton.style.color = appleCrayonPalette[ 'silver' ];
+    // this.zoomInButton.style.pointerEvents = 'none';
+    //
+    // this.zoomOutButton.style.color = appleCrayonPalette[ 'silver' ];
+    // this.zoomOutButton.style.pointerEvents = 'none';
+
+    this.slider.disabled = true;
+};
+
+ZoomWidget.prototype.hide = function () {
+    this.zoomContainer.style.display = 'none';
+};
+
+ZoomWidget.prototype.show = function () {
+    this.zoomContainer.style.display = 'block';
+};
+
+ZoomWidget.prototype.hideSlider = function () {
+    this.slider.style.display = 'none';
+};
+
+ZoomWidget.prototype.showSlider = function () {
+    this.slider.style.display = 'block';
+};
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 University of California San Diego
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const SVGSaveControl = function (parent, browser) {
+    const button = domUtils.div({class: 'igv-navbar-button'});
+    parent.append(button);
+
+    button.textContent = 'Save SVG';
+    button.addEventListener('click', () => browser.saveSVGtoFile({}));
+};
+
+const viewportColumnManager =
+    {
+        createColumns: (columnContainer, count) => {
+
+            for (let i = 0; i < count; i++) {
+                if (0 === i) {
+                    createColumn(columnContainer, 'igv-column');
+                } else {
+                    columnContainer.appendChild(domUtils.div({class: 'igv-column-shim'}));
+                    createColumn(columnContainer, 'igv-column');
+                }
+            }
+
+        },
+
+        removeColumnAtIndex: (i, column) => {
+            const shim = 0 === i ? column.nextElementSibling : column.previousElementSibling;
+            column.remove();
+            shim.remove();
+        },
+
+        insertAfter: referenceElement => {
+
+            const shim = domUtils.div({class: 'igv-column-shim'});
+            insertElementAfter(shim, referenceElement);
+
+            const column = domUtils.div({class: 'igv-column'});
+            insertElementAfter(column, shim);
+
+            return column
+        },
+
+        insertBefore: (referenceElement, count) => {
+
+            for (let i = 0; i < count; i++) {
+
+                const column = domUtils.div({class: 'igv-column'});
+                insertElementBefore(column, referenceElement);
+
+                if (count > 1 && i > 0) {
+                    const columnShim = domUtils.div({class: 'igv-column-shim'});
+                    insertElementBefore(columnShim, column);
+                }
+
+            }
+
+        },
+
+        indexOfColumn: (columnContainer, column) => {
+
+            const allColumns = columnContainer.querySelectorAll('.igv-column');
+
+            for (let i = 0; i < allColumns.length; i++) {
+                const c = allColumns[ i ];
+                if (c === column) {
+                    return i
+                }
+            }
+
+            return undefined
+        },
+    };
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 University of California San Diego
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class ViewportCenterLine {
+
+    constructor(browser, referenceFrame, column) {
+
+        this.browser = browser;
+        this.referenceFrame = referenceFrame;
+        this.column = column;
+
+        this.container = domUtils.div({class: 'igv-center-line'});
+        column.appendChild(this.container);
+
+        if (browser.isCenterLineVisible) {
+            this.show();
+        } else {
+            this.hide();
+        }
+    }
+
+    repaint() {
+
+        if (this.referenceFrame) {
+
+            const ppb = 1.0 / this.referenceFrame.bpPerPixel;
+            if (ppb > 1) {
+                const width = Math.floor(this.referenceFrame.toPixels(1));
+                this.container.style.width = `${width}px`;
+                this.container.classList.remove('igv-center-line-thin');
+                this.container.classList.add('igv-center-line-wide');
+            } else {
+                this.container.style.width = '1px';
+                this.container.classList.remove('igv-center-line-wide');
+                this.container.classList.add('igv-center-line-thin');
+            }
+        }
+    }
+
+    show() {
+        this.isVisible = true;
+        this.container.style.display = 'block';
+        this.repaint();
+    }
+
+    hide() {
+        this.isVisible = false;
+        this.container.style.display = 'none';
+    }
+
+    resize() {
+        this.repaint();
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const numberFormatter = numberFormatter$1;
+
+class RulerTrack {
+    constructor(browser) {
+
+        this.browser = browser;
+        this.height = 40;
+        this.name = "";
+        this.id = "ruler";
+        this.disableButtons = true;
+        this.ignoreTrackMenu = true;
+        this.order = Number.MIN_SAFE_INTEGER * 1e-2;
+        this.removable = false;
+        this.type = 'ruler';
+    }
+
+    async getFeatures(chr, start, end) {
+        return []
+    };
+
+    computePixelHeight(ignore) {
+        return this.height
+    };
+
+    draw({context, referenceFrame, pixelWidth, pixelHeight, bpPerPixel, bpStart}) {
+
+        if (GenomeUtils.isWholeGenomeView(referenceFrame.chr)) {
+            this.drawWholeGenome({context, pixelWidth, pixelHeight, bpPerPixel});
+        } else {
+            this.doDraw({context, referenceFrame, pixelWidth, pixelHeight, bpStart});
+        }
+    }
+
+    drawWholeGenome({context, pixelWidth, pixelHeight, bpPerPixel}) {
+
+        context.save();
+
+        IGVGraphics.fillRect(context, 0, 0, pixelWidth, pixelHeight, {'fillStyle': 'white'});
+
+        for (let name of this.browser.genome.wgChromosomeNames) {
+
+            let xBP = this.browser.genome.getCumulativeOffset(name);
+            let wBP = this.browser.genome.getChromosome(name).bpLength;
+
+            let x = Math.round(xBP / bpPerPixel);
+            let w = Math.round(wBP / bpPerPixel);
+
+            this.renderChromosomeRect(context, x, 0, w, pixelHeight, name);
+        }
+
+        context.restore();
+
+    }
+
+    doDraw({context, referenceFrame, pixelWidth, pixelHeight, bpStart}) {
+
+        context.clearRect(0, 0, pixelWidth, pixelHeight);
+
+        const tickHeight = 6;
+        const shim = 2;
+
+        const bpLength = Math.floor(referenceFrame.toBP(pixelWidth));
+        const tick = findSpacing(bpLength, context.isSVG);
+
+        let nTick = Math.floor(bpStart / tick.majorTick) - 1;
+
+        const {tickDelta, labelLength} = calculateDeltas(context, referenceFrame, bpStart, nTick, tick);
+
+        this.browser.referenceFrameList.indexOf(referenceFrame);
+        // console.log(`ruler(${ index }) label-length ${ labelLength > tickDelta ? 'clobbers' : 'less than' } tick-delta ${ StringUtils.numberFormatter(tickDelta)} `)
+
+        let xTick;
+        let bp;
+        let accumulatedTickDelta = tickDelta;
+        const labelLengthShim = 0.25 * labelLength;
+        do {
+
+            bp = Math.floor(nTick * tick.majorTick);
+            const rulerLabel = `${numberFormatter$1(Math.floor(bp / tick.unitMultiplier))} ${tick.majorUnit}`;
+
+            xTick = Math.round(referenceFrame.toPixels((bp - 1) - bpStart + 0.5));
+            const xLabel = Math.round(xTick - context.measureText(rulerLabel).width / 2);
+
+            if (xLabel > 0 && (labelLengthShim + labelLength) <= accumulatedTickDelta) {
+                IGVGraphics.fillText(context, rulerLabel, xLabel, this.height - (tickHeight / 0.75));
+                accumulatedTickDelta = 0;
+            }
+
+            if (xTick > 0) {
+                IGVGraphics.strokeLine(context, xTick, this.height - tickHeight, xTick, this.height - shim);
+            }
+
+            bp = Math.floor((1 + nTick) * tick.majorTick);
+            let pixel = Math.round(referenceFrame.toPixels((bp - 1) - bpStart + 0.5));
+            let delta = (pixel - xTick) / 2;
+            let xx = xTick + delta;
+            if (xx > 0) {
+                IGVGraphics.strokeLine(context, xx, this.height - tickHeight, xx, this.height - shim);
+            }
+
+            ++nTick;
+            accumulatedTickDelta += tickDelta;
+
+        } while (xTick < pixelWidth)
+
+        IGVGraphics.strokeLine(context, 0, this.height - shim, pixelWidth, this.height - shim);
+
+    }
+
+    renderChromosomeRect(ctx, x, y, w, h, name) {
+
+        ctx.textAlign = 'center';
+        ctx.textBaseline = 'middle';
+        ctx.font = '12px sans-serif';
+
+        IGVGraphics.strokeLine(ctx, x + w, y, x + w, y + h, {strokeStyle: IGVColor.greyScale(191)});
+
+        const shortName = (name.startsWith("chr")) ? name.substring(3) : name;
+
+        if (w > ctx.measureText(shortName).width) {
+            IGVGraphics.fillText(ctx, shortName, (x + (w / 2)), (y + (h / 2)), {fillStyle: IGVColor.greyScale(68)});
+        }
+    }
+
+    get supportsWholeGenome() {
+        return true
+    };
+
+    dispose() {
+        // do stuff
+    }
+}
+
+function findSpacing(bpLength, isSVG) {
+
+    if (bpLength < 10) {
+        return new Tick(1, 'bp', 1)
+    }
+
+    const nZeroes = Math.floor(Math.log10(bpLength));
+
+    let majorUnit = 'bp';
+    let unitMultiplier = 1;
+
+    if (nZeroes > 9) {
+        majorUnit = 'gb';
+        unitMultiplier = 1e9;
+    } else if (nZeroes > 6) {
+        majorUnit = 'mb';
+        unitMultiplier = 1e6;
+    } else if (nZeroes > 3) {
+        majorUnit = 'kb';
+        unitMultiplier = 1e3;
+    }
+
+    const denom = Math.pow(10, nZeroes - 1);
+    const nMajorTicks = bpLength / denom;
+
+    // const threshold = 25
+    const threshold = 3 * 25;
+
+    const belowThresholdTick = Math.pow(10, nZeroes - 1);
+    const aboveThresholdTick = Math.pow(10, nZeroes) / 2;
+
+    // console.log(`zeros ${ nZeroes } tick-threshold ${ threshold } ticks ${ nMajorTicks } belowTick ${ StringUtils.numberFormatter(belowThresholdTick) } aboveTick ${ StringUtils.numberFormatter(aboveThresholdTick) }`)
+
+    const majorTick = (nMajorTicks < threshold && isSVG !== true) ? belowThresholdTick : aboveThresholdTick;
+
+    return new Tick(majorTick, majorUnit, unitMultiplier)
+}
+
+function calculateDeltas(context, referenceFrame, bpStart, nTick, tick) {
+
+    const tickDelta = getX(referenceFrame, getBP(1 + nTick, tick), bpStart) - getX(referenceFrame, getBP(nTick, tick), bpStart);
+
+    const label = `${numberFormatter$1(Math.floor(getBP(nTick, tick) / tick.unitMultiplier))} ${tick.majorUnit}`;
+    const labelLength = Math.floor(context.measureText(label).width);
+
+    return {tickDelta, labelLength}
+
+    function getBP(nTick, tick) {
+        return Math.floor(nTick * tick.majorTick)
+    }
+
+    function getX(referenceFrame, bp, bpStart) {
+        return Math.round(referenceFrame.toPixels((bp - 1) - bpStart + 0.5))
+    }
+}
+
+class Tick {
+
+    constructor(majorTick, majorUnit, unitMultiplier) {
+        this.majorTick = majorTick;
+        this.minorTick = majorTick / 10.0;
+        this.majorUnit = majorUnit;
+        this.unitMultiplier = unitMultiplier;
+    }
+
+    description(blurb) {
+        console.log((blurb || '') + ' tick ' + numberFormatter(this.majorTick) + ' label width ' + numberFormatter(this.labelWidthBP) + ' multiplier ' + this.unitMultiplier);
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 University of California San Diego
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+const CircularViewControl = function (parent, browser) {
+
+    this.button = domUtils.div({class: 'igv-navbar-button'});
+    parent.appendChild(this.button);
+    this.button.textContent = 'circular view';
+
+    this.button.addEventListener('click', () => {
+        browser.circularViewVisible = !browser.circularViewVisible;
+        //this.setState(browser.circularViewVisible)
+    });
+
+    this.browser = browser;
+
+    this.setVisibility(browser.config.showCircularViewButton);
+
+    this.setState(browser.circularViewVisible);
+
+};
+
+CircularViewControl.prototype.setVisibility = function (showCircularViewButton) {
+    if (true === showCircularViewButton) {
+        this.show();
+    } else {
+        this.hide();
+    }
+};
+
+CircularViewControl.prototype.setState = function (circularViewVisible) {
+    if (true === circularViewVisible) {
+        this.button.classList.add('igv-navbar-button-clicked');
+    } else {
+        this.button.classList.remove('igv-navbar-button-clicked');
+    }
+};
+
+CircularViewControl.prototype.show = function () {
+    this.button.style.display = 'block';
+    this.setState(this.browser.circularViewVisible);
+};
+
+CircularViewControl.prototype.hide = function () {
+    this.button.style.display = 'none';
+};
+
+/**
+ * User supplied button for the navbar
+ */
+
+const CustomButton = function (parent, browser, b) {
+
+    const button = domUtils.div({class: 'igv-navbar-button'});
+    parent.append(button);
+    button.textContent = b.label;
+    button.addEventListener('click', () => b.callback(browser));
+};
+
+class ROIManager {
+
+    constructor(browser, roiMenu, roiTable, top, roiSets) {
+
+        this.browser = browser;
+        this.roiMenu = roiMenu;
+        this.roiTable = roiTable;
+        this.top = top;
+        this.roiSets = roiSets || [];
+        this.boundLocusChangeHandler = locusChangeHandler.bind(this);
+        browser.on('locuschange', this.boundLocusChangeHandler);
+
+    }
+
+    async initialize() {
+
+        if (this.roiSets.length > 0) {
+            this.browser.showROITableButton = true;
+            this.browser.roiTableControl.setVisibility(this.browser.showROITableButton);
+        }
+
+        const promises = this.roiSets.map(roiSet => this.renderROISet({
+            browser: this.browser,
+            pixelTop: this.top,
+            roiSet
+        }));
+
+        if (promises.length > 0) {
+            await Promise.all(promises);
+        }
+
+        const records = await this.getTableRecords();
+        this.roiTable.renderTable(records);
+
+    }
+
+    async loadROI(config, genome) {
+
+        const configs = Array.isArray(config) ? config : [config];
+
+        for (let c of configs) {
+            this.roiSets.push(new ROISet(c, genome));
+        }
+
+        await this.initialize();
+
+    }
+
+    clearROIs() {
+
+        this.roiTable.clearTable();
+
+        const elements = this.browser.columnContainer.querySelectorAll('.igv-roi-region');
+        for (let el of elements) {
+            el.remove();
+        }
+
+        for (let roiSet of this.roiSets) {
+            roiSet.dispose();
+        }
+
+        this.roiSets = [];
+
+    }
+
+    async getTableRecords() {
+
+        const records = [];
+
+        for (let roiSet of this.roiSets) {
+            const setName = roiSet.isUserDefined ? '' : (roiSet.name || '');
+            const allFeatures = await roiSet.getAllFeatures();
+            for (let chr of Object.keys(allFeatures)) {
+                for (let feature of allFeatures[chr]) {
+                    records.push({setName, feature});
+                }
+            }
+        }
+
+        return records
+    }
+
+    presentTable() {
+        this.roiTable.present();
+    }
+
+    async repaintTable() {
+        const records = await this.getTableRecords();
+        this.roiTable.renderTable(records);
+    }
+
+    dismissTable() {
+        this.roiTable.dismiss();
+    }
+
+    async updateUserDefinedROISet(feature) {
+
+        let userDefinedROISet = await this.getUserDefinedROISet();
+
+        if (undefined === userDefinedROISet) {
+            userDefinedROISet = this.initializeUserDefinedROISet();
+        }
+
+        userDefinedROISet.addFeature(feature);
+
+        if (false === this.browser.showROITableButton) {
+            this.setROITableButtonVisibility(true);
+        }
+
+        await this.renderROISet({browser: this.browser, pixelTop: this.top, roiSet: userDefinedROISet});
+
+        const records = await this.getTableRecords();
+        this.roiTable.renderTable(records);
+    }
+
+    setROITableButtonVisibility(isVisible) {
+        this.browser.showROITableButton = isVisible;
+        this.browser.roiTableControl.setVisibility(this.browser.showROITableButton);
+    }
+
+    async renderAllROISets() {
+
+        for (let roiSet of this.roiSets) {
+            await this.renderROISet({browser: this.browser, pixelTop: this.top, roiSet});
+        }
+    }
+
+    async renderROISet({browser, pixelTop, roiSet}) {
+
+        const columns = browser.columnContainer.querySelectorAll('.igv-column');
+
+        for (let i = 0; i < columns.length; i++) {
+
+            let {chr, start: viewStart, end: viewEnd, bpPerPixel} = browser.referenceFrameList[i];
+
+            const elements = columns[i].querySelectorAll('.igv-roi-region');
+            for (let el of elements) {
+                const regionKey = el.dataset.region;
+                const {chr: regionChr, start: regionStart, end: regionEnd} = parseRegionKey(regionKey);
+                if (regionChr !== chr || regionEnd < viewStart || regionStart > viewEnd) {
+                    el.remove();
+                }
+            }
+
+            const features = await roiSet.getFeatures(chr, viewStart, viewEnd);
+
+            if (features) {
+
+                for (let feature of features) {
+
+                    const regionKey = createRegionKey(chr, feature.start, feature.end);
+
+                    const {
+                        x: pixelX,
+                        width: pixelWidth
+                    } = screenCoordinates(Math.max(viewStart, feature.start), Math.min(viewEnd, feature.end), viewStart, bpPerPixel);
+
+
+                    const el = columns[i].querySelector(createSelector(regionKey));
+
+                    if (el) {
+                        el.style.left = `${pixelX}px`;
+                        el.style.width = `${pixelWidth}px`;
+
+                    } else {
+                        const element = this.createRegionElement(browser.columnContainer, pixelTop, pixelX, pixelWidth, roiSet, regionKey, feature.name);
+                        columns[i].appendChild(element);
+                    }
+                }
+            }
+        }
+    }
+
+    createRegionElement(columnContainer, pixelTop, pixelX, pixelWidth, roiSet, regionKey, name) {
+
+        const regionElement = domUtils.div({class: 'igv-roi-region'});
+
+        regionElement.style.top = `${pixelTop}px`;
+        regionElement.style.left = `${pixelX}px`;
+        regionElement.style.width = `${pixelWidth}px`;
+        regionElement.style.backgroundColor = roiSet.color;
+        regionElement.dataset.region = regionKey;
+
+        const header = domUtils.div();
+        regionElement.appendChild(header);
+
+        header.style.backgroundColor = roiSet.headerColor;
+
+        if (true === roiSet.isUserDefined) {
+            header.addEventListener('click', event => {
+                event.preventDefault();
+                event.stopPropagation();
+
+                const {x, y} = domUtils.translateMouseCoordinates(event, columnContainer);
+                this.roiMenu.present(x, y, this, columnContainer, regionElement);
+            });
+        } else if (name) {
+            header.addEventListener('click', event => {
+                event.preventDefault();
+                event.stopPropagation();
+                if (this.popover) {
+                    this.popover.dispose();
+                }
+                this.popover = new Popover(columnContainer, roiSet.name);
+                this.popover.presentContentWithEvent(event, name);
+            });
+        } else {
+            header.style.pointerEvents = 'none';
+        }
+
+        return regionElement
+    }
+
+    renderSVGContext(context, {deltaX, deltaY}) {
+
+        for (const regionElement of document.querySelectorAll('.igv-roi-region')) {
+
+            // body
+            const { x, y, width, height } = regionElement.getBoundingClientRect();
+            context.fillStyle = regionElement.style.backgroundColor;
+            context.fillRect(x+deltaX, y+deltaY, width, height);
+
+            // header
+            const header = regionElement.querySelector('div');
+            const { x:xx, y:yy, width:ww, height:hh } = header.getBoundingClientRect();
+            context.fillStyle = header.style.backgroundColor;
+            context.fillRect(xx+deltaX, yy+deltaY, ww, hh);
+        }
+    }
+
+    async getUserDefinedROISet() {
+        return this.roiSets.find(roiSet => true === roiSet.isUserDefined)
+    }
+
+    initializeUserDefinedROISet() {
+
+        const config =
+            {
+                isUserDefined: true,
+                features: []
+            };
+        const userDefinedROISet = new ROISet(config, this.browser.genome);
+        this.roiSets.push(userDefinedROISet);
+
+        return userDefinedROISet
+    }
+
+    async deleteUserDefinedRegionWithKey(regionKey, columnContainer) {
+
+        columnContainer.querySelectorAll(createSelector(regionKey)).forEach(node => node.remove());
+
+        const feature = await this.findUserDefinedRegionWithKey(regionKey);
+
+        const set = await this.getUserDefinedROISet();
+
+        if (set) {
+            set.removeFeature(feature);
+        }
+
+        const records = await this.getTableRecords();
+
+        if (0 === records.length) {
+            this.browser.roiTableControl.buttonHandler(false);
+            this.setROITableButtonVisibility(false);
+        }
+
+    }
+
+    async findUserDefinedRegionWithKey(regionKey) {
+
+        const {chr, start, end} = parseRegionKey(regionKey);
+        const set = await this.getUserDefinedROISet();
+
+        if (set) {
+            const features = await set.getFeatures(chr, start, end);
+
+            for (let feature of features) {
+                if (feature.chr === chr && feature.start >= start && feature.end <= end) {
+                    return feature
+                }
+            }
+        }
+
+        return undefined
+    }
+
+    toJSON() {
+        return this.roiSets.map(roiSet => roiSet.toJSON())
+    }
+
+    dispose() {
+
+        this.browser.off('locuschange', this.boundLocusChangeHandler);
+
+        const removable = this.browser.columnContainer.querySelectorAll('.igv-roi-region');
+
+        for (let el of removable) {
+            el.remove();
+        }
+
+        if (this.roiMenu) {
+            this.roiMenu.dispose();
+        }
+
+        if (this.roiTable) {
+            this.roiTable.dispose();
+        }
+
+        for (let roiSet of this.roiSets) {
+            roiSet.dispose();
+        }
+
+        for (let key of Object.keys(this)) {
+            this[key] = undefined;
+        }
+
+    }
+}
+
+function locusChangeHandler() {
+    this.renderAllROISets();
+}
+
+function createRegionKey(chr, start, end) {
+    return `${chr}-${start}-${end}`
+}
+
+function createSelector(regionKey) {
+    return `[data-region="${regionKey}"]`
+}
+
+function parseRegionKey(regionKey) {
+    let [chr, ss, ee] = regionKey.split('-');
+    ss = parseInt(ss);
+    ee = parseInt(ee);
+
+    return {chr, start: ss, end: ee, locus: `${chr}:${ss}-${ee}`, bedRecord: `${chr}\t${ss}\t${ee}`}
+}
+
+class ROITable extends RegionTableBase {
+    constructor(config) {
+
+        const cooked = Object.assign({ 'width':'512px' }, config);
+        super(cooked);
+    }
+
+    tableRowDOM(record) {
+
+        const dom = domUtils.div({ class: 'igv-roi-table-row' });
+
+        const { setName, feature } = record;
+        dom.dataset.region = createRegionKey(feature.chr, feature.start, feature.end);
+
+        let strings =
+            [
+                feature.chr,
+                numberFormatter$1(feature.start),
+                numberFormatter$1(feature.end),
+                feature.name || '',
+                setName
+            ];
+
+        if (4 === this.columnFormat.length) {
+            strings = strings.slice(0, 4);
+        }
+
+        for (let i = 0; i < strings.length; i++) {
+            const el = domUtils.div();
+            dom.appendChild(el);
+            el.style.width = this.columnFormat[ i ].width;
+            el.innerText = strings[ i ];
+        }
+
+        this.tableRowDOMHelper(dom);
+
+        return dom
+    }
+
+    renderTable(records) {
+
+        Array.from(this.tableRowContainer.querySelectorAll('.igv-roi-table-row')).forEach(el => el.remove());
+
+        if (records.length > 0) {
+
+            const sortedRecords = records.sort((a, b) => (a.feature.chr.localeCompare(b.feature.chr) || a.feature.start - b.feature.start || a.feature.end - b.feature.end));
+
+            for (let record of sortedRecords) {
+                const row = this.tableRowDOM(record);
+                this.tableRowContainer.appendChild(row);
+            }
+
+        }
+    }
+
+    dispose() {
+
+        document.removeEventListener('click', this.boundGotoButtonHandler);
+
+        this.browser.roiTableControl.buttonHandler(false);
+        super.dispose();
+    }
+
+    static getColumnFormatConfiguration(doIncludeROISetNames) {
+
+        if (true === doIncludeROISetNames) {
+
+            return [
+                    { label: 'Chr', width: '20%' },
+                    { label: 'Start', width: '15%' },
+                    { label: 'End', width: '15%' },
+                    { label: 'Description', width: '30%' },
+                    { label: 'ROI Set', width: '20%' }
+                ]
+        } else {
+            return [
+                    { label: 'Chr', width: '25%' },
+                    { label: 'Start', width: '20%' },
+                    { label: 'End', width: '20%' },
+                    { label: 'Description', width: '35%' }
+                ]
+        }
+
+    }
+
+    static gotoButtonHandler (event) {
+
+        event.stopPropagation();
+
+        const selected = this.tableDOM.querySelectorAll('.igv-roi-table-row-selected');
+        const loci = [];
+        for (let el of selected) {
+            const { locus } = parseRegionKey(el.dataset.region);
+            loci.push(locus);
+        }
+
+        for (let el of this.tableDOM.querySelectorAll('.igv-roi-table-row')) {
+            el.classList.remove('igv-roi-table-row-selected');
+        }
+
+        this.setTableRowSelectionState(false);
+
+        if (loci.length > 0) {
+            this.browser.search(loci.join(' '));
+        }
+
+    }
+
+}
+
+class ROIMenu {
+    constructor(browser, parent) {
+
+        this.browser = browser;
+
+        // container
+        this.container = domUtils.div({ class: 'igv-roi-menu-next-gen' });
+        parent.appendChild(this.container);
+
+        // header
+        const header = domUtils.div();
+        this.container.appendChild(header);
+
+        uiUtils.attachDialogCloseHandlerWithParent(header, () => this.container.style.display = 'none');
+
+        // body
+        this.body = domUtils.div();
+        this.container.appendChild(this.body);
+
+        this.container.style.display = 'none';
+
+    }
+
+    async present(x, y, roiManager, columnContainer, regionElement) {
+
+        removeAllChildNodes(this.body);
+
+        const feature = await this.browser.roiManager.findUserDefinedRegionWithKey(regionElement.dataset.region);
+
+        // Description Copy
+        const _description_copy_ = domUtils.div();
+        this.body.appendChild(_description_copy_);
+
+        const placeholder = 'Description';
+        const str = (feature.name || placeholder);
+
+        _description_copy_.innerText = str;
+        _description_copy_.setAttribute('title', str);
+        placeholder === str ? _description_copy_.classList.add('igv-roi-placeholder') : _description_copy_.classList.remove('igv-roi-placeholder');
+
+
+        // Set Description
+        const description = domUtils.div();
+        this.body.appendChild(description);
+        description.innerText = 'Set Description';
+
+        description.addEventListener('click', event => {
+
+            event.stopPropagation();
+
+            this.container.style.display = 'none';
+
+            const callback = () => {
+
+                const value = this.browser.inputDialog.value || '';
+                feature.name = value.trim();
+
+                this.container.style.display = 'none';
+
+                this.browser.roiManager.repaintTable();
+            };
+
+            const config =
+                {
+                    label: 'Description',
+                    value: (feature.name || ''),
+                    callback
+                };
+
+            this.browser.inputDialog.present(config, event);
+
+        });
+
+
+        // Delete Region
+        const _delete_ = domUtils.div();
+        this.body.appendChild(_delete_);
+        _delete_.innerText = 'Delete Region';
+
+        _delete_.addEventListener('click', event => {
+            event.stopPropagation();
+            this.container.style.display = 'none';
+            this.browser.roiManager.deleteUserDefinedRegionWithKey(regionElement.dataset.region, this.browser.columnContainer);
+        });
+
+
+
+
+
+
+
+        // columnContainer.addEventListener('click', event => {
+        //     event.stopPropagation()
+        //     this.container.style.display = 'none'
+        // })
+
+        this.container.style.left = `${ x }px`;
+        this.container.style.top  = `${ y }px`;
+        this.container.style.display = 'flex';
+
+    }
+
+    async __present(x, y, roiManager, columnContainer, regionElement) {
+
+        removeAllChildNodes(this.container);
+
+        const feature = await this.browser.roiManager.findUserDefinedRegionWithKey(regionElement.dataset.region);
+
+        let row;
+
+        // Go To
+        // row = DOMUtils.div({ class: 'igv-roi-menu-row' })
+        // row.innerText = 'Go To'
+        // this.container.appendChild(row)
+        //
+        // row.addEventListener('click', event => {
+        //     event.stopPropagation()
+        //     this.container.style.display = 'none'
+        //
+        //     const { locus } = parseRegionKey(regionElement.dataset.region)
+        //     this.browser.search(locus)
+        // })
+
+        // Description:
+        row = domUtils.div({ class: 'igv-roi-menu-row-edit-description' });
+        this.container.appendChild(row);
+
+        row.addEventListener('click', e => {
+            e.stopPropagation();
+        });
+
+        const str = 'description-input';
+
+        const label = document.createElement('label');
+        row.appendChild(label);
+
+        label.setAttribute('for', str);
+        label.innerText = 'Description:';
+
+        const input = document.createElement('input');
+        row.appendChild(input);
+
+        input.setAttribute('type', 'text');
+        input.setAttribute('name', str);
+        // input.setAttribute('placeholder', feature.name || 'Edit Description')
+        input.setAttribute('placeholder', '');
+        input.value = feature.name || '';
+
+        input.addEventListener('change', async e => {
+
+            e.stopPropagation();
+
+            const feature = await this.browser.roiManager.findUserDefinedRegionWithKey(regionElement.dataset.region);
+            feature.name = input.value;
+
+            input.blur();
+            this.container.style.display = 'none';
+
+            await this.browser.roiManager.repaintTable();
+        });
+
+
+        // Delete
+        row = domUtils.div({ class: 'igv-roi-menu-row' });
+        row.innerText = 'Delete region';
+        this.container.appendChild(row);
+
+        row.addEventListener('click', event => {
+            event.stopPropagation();
+            this.container.style.display = 'none';
+            this.browser.roiManager.deleteUserDefinedRegionWithKey(regionElement.dataset.region, this.browser.columnContainer);
+        });
+
+        this.container.style.left = `${ x }px`;
+        this.container.style.top  = `${ y }px`;
+        this.container.style.display = 'flex';
+
+        columnContainer.addEventListener('click', event => {
+            event.stopPropagation();
+            this.container.style.display = 'none';
+        });
+
+    }
+
+    dispose() {
+        this.container.innerHTML = '';
+    }
+
+}
+
+function removeAllChildNodes(parent) {
+    while (parent.firstChild) {
+        parent.removeChild(parent.firstChild);
+    }
+}
+
+class TrackROISet {
+
+    constructor(config, genome) {
+        this.name = config.name;
+        this.featureSource = config.featureSource || FeatureSource(config, genome);
+        this.color = config.color || ROI_DEFAULT_COLOR;
+    }
+
+    async getFeatures(chr, start, end) {
+        return this.featureSource.getFeatures({chr, start, end})
+    }
+
+    draw(drawConfiguration) {
+
+        const { context, bpPerPixel, bpStart, pixelTop, pixelHeight, pixelWidth, features, } = drawConfiguration;
+
+        if (!features) {
+            return
+        }
+
+        const bpEnd = bpStart + (pixelWidth * bpPerPixel) + 1;
+        for (let { start:regionStartBP, end:regionEndBP } of features) {
+
+            if (regionEndBP < bpStart) {
+                continue
+            }
+
+            if (regionStartBP > bpEnd) {
+                break
+            }
+
+            const { x, width } = screenCoordinates(regionStartBP, regionEndBP, bpStart, bpPerPixel);
+            IGVGraphics.fillRect(context, x, pixelTop, width, pixelHeight, { fillStyle: this.color });
+        }
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2016 University of California San Diego
+ * Author: Jim Robinson
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+class ROITableControl {
+
+    constructor(parent, browser) {
+        this.browser = browser;
+        this.button = domUtils.div({class: 'igv-navbar-button'});
+        parent.appendChild(this.button);
+        this.button.textContent = 'ROI Table';
+
+        this.button.addEventListener('click', () => {
+            this.buttonHandler(!browser.roiTableVisible);
+        });
+
+        this.browser = browser;
+
+        this.setVisibility(browser.showROITableButton);
+
+        this.setState(browser.roiTableVisible);
+    }
+
+    buttonHandler(status) {
+        this.browser.roiTableVisible = status;
+        this.setState(this.browser.roiTableVisible);
+        this.browser.setROITableVisibility(this.browser.roiTableVisible);
+    }
+
+    setVisibility(doShowROITablelButton) {
+        if (true === doShowROITablelButton) {
+            this.show();
+        } else {
+            this.hide();
+        }
+    }
+
+    setState(roiTableVisible) {
+        if (true === roiTableVisible) {
+            this.button.classList.add('igv-navbar-button-clicked');
+        } else {
+            this.button.classList.remove('igv-navbar-button-clicked');
+        }
+    }
+
+    show() {
+        this.button.style.display = 'block';
+        this.setState(this.browser.roiTableVisible);
+    }
+
+    hide() {
+        this.button.style.display = 'none';
+    }
+}
+
+// css - $igv-scrollbar-outer-width: 14px;
+const igv_scrollbar_outer_width = 14;
+
+// css - $igv-track-drag-column-width: 12px;
+const igv_track_manipulation_handle_width = 12;
+
+// css - $igv-track-gear-menu-column-width: 28px;
+const igv_track_gear_menu_column_width = 28;
+
+// $igv-column-shim-width: 1px;
+// $igv-column-shim-margin: 2px;
+const column_multi_locus_shim_width = 2 + 1 + 2;
+
+const defaultSampleNameViewportWidth = 200;
+
+class Browser {
+
+    constructor(config, parentDiv) {
+
+        this.config = config;
+        this.guid = domUtils.guid();
+        this.namespace = '.browser_' + this.guid;
+
+        this.parent = parentDiv;
+
+        this.root = domUtils.div({class: 'igv-container'});
+        parentDiv.appendChild(this.root);
+
+        this.alert = new Alert(this.root);
+
+        this.columnContainer = domUtils.div({class: 'igv-column-container'});
+        this.root.appendChild(this.columnContainer);
+
+        this.menuPopup = new MenuPopup(this.columnContainer);
+
+        this.initialize(config);
+
+        this.trackViews = [];
+
+        this.constants = {
+            dragThreshold: 3,
+            scrollThreshold: 5,
+            defaultColor: "rgb(0,0,150)",
+            doubleClickDelay: config.doubleClickDelay || 500
+        };
+
+        // Map of event name -> [ handlerFn, ... ]
+        this.eventHandlers = {};
+
+        this.addMouseHandlers();
+
+        this.setControls(config);
+    }
+
+    initialize(config) {
+
+        if (config.gtex) {
+            GtexUtils.gtexLoaded = true;
+        }
+        this.flanking = config.flanking;
+        this.crossDomainProxy = config.crossDomainProxy;
+        this.formats = config.formats;
+        this.trackDefaults = config.trackDefaults;
+        this.nucleotideColors = config.nucleotideColors || defaultNucleotideColors;
+        for (let key of Object.keys(this.nucleotideColors)) {
+            this.nucleotideColors[key.toLowerCase()] = this.nucleotideColors[key];
+        }
+
+        this.trackLabelsVisible = config.showTrackLabels;
+
+        this.roiTableVisible = config.showROITable;
+        this.showROITableButton = config.showROITableButton;
+
+        this.isCenterLineVisible = config.showCenterGuide;
+
+        this.cursorGuideVisible = config.showCursorGuide;
+
+        this.showSampleNames = config.showSampleNames;
+        this.showSampleNameButton = config.showSampleNameButton;
+        this.sampleNameViewportWidth = config.sampleNameViewportWidth || defaultSampleNameViewportWidth;
+
+        if (config.search) {
+            this.searchConfig = {
+                type: "json",
+                url: config.search.url,
+                coords: config.search.coords === undefined ? 1 : config.search.coords,
+                chromosomeField: config.search.chromosomeField || "chromosome",
+                startField: config.search.startField || "start",
+                endField: config.search.endField || "end",
+                geneField: config.search.geneField || "gene",
+                snpField: config.search.snpField || "snp",
+                resultsField: config.search.resultsField
+            };
+        }
+    }
+
+    setControls(config) {
+
+        const $navBar = this.createStandardControls(config);
+        $navBar.insertBefore($$1(this.columnContainer));
+        this.$navigation = $navBar;
+
+        if (false === config.showControls) {
+            $navBar.hide();
+        }
+
+    }
+
+    createStandardControls(config) {
+
+        this.navbarManager = new NavbarManager(this);
+
+        const $navBar = $$1('<div>', {class: 'igv-navbar'});
+        this.$navigation = $navBar;
+
+        const $navbarLeftContainer = $$1('<div>', {class: 'igv-navbar-left-container'});
+        $navBar.append($navbarLeftContainer);
+
+        // IGV logo
+        const $logo = $$1('<div>', {class: 'igv-logo'});
+        $navbarLeftContainer.append($logo);
+
+        const logoSvg = logo();
+        logoSvg.css("width", "34px");
+        logoSvg.css("height", "32px");
+        $logo.append(logoSvg);
+
+        this.$current_genome = $$1('<div>', {class: 'igv-current-genome'});
+        $navbarLeftContainer.append(this.$current_genome);
+        this.$current_genome.text('');
+
+        const $genomicLocation = $$1('<div>', {class: 'igv-navbar-genomic-location'});
+        $navbarLeftContainer.append($genomicLocation);
+
+        // chromosome select widget
+        this.chromosomeSelectWidget = new ChromosomeSelectWidget(this, $genomicLocation.get(0));
+        if (undefined === config.showChromosomeWidget) {
+            config.showChromosomeWidget = true;   // Default to true
+        }
+        if (true === config.showChromosomeWidget) {
+            this.chromosomeSelectWidget.show();
+        } else {
+            this.chromosomeSelectWidget.hide();
+        }
+
+        const $locusSizeGroup = $$1('<div>', {class: 'igv-locus-size-group'});
+        $genomicLocation.append($locusSizeGroup);
+
+        const $searchContainer = $$1('<div>', {class: 'igv-search-container'});
+        $locusSizeGroup.append($searchContainer);
+
+        // browser.$searchInput = $('<input type="text" placeholder="Locus Search">');
+        this.$searchInput = $$1('<input>', {class: 'igv-search-input', type: 'text', placeholder: 'Locus Search'});
+        $searchContainer.append(this.$searchInput);
+
+        this.$searchInput.change(() => this.doSearch(this.$searchInput.val()));
+
+        const searchIconContainer = domUtils.div({class: 'igv-search-icon-container'});
+        $searchContainer.append($$1(searchIconContainer));
+
+        searchIconContainer.appendChild(icons$1.createIcon("search"));
+
+        searchIconContainer.addEventListener('click', () => this.doSearch(this.$searchInput.val()));
+
+        this.windowSizePanel = new WindowSizePanel($locusSizeGroup.get(0), this);
+
+        const $navbarRightContainer = $$1('<div>', {class: 'igv-navbar-right-container'});
+        $navBar.append($navbarRightContainer);
+
+        const $toggle_button_container = $$1('<div class="igv-navbar-toggle-button-container">');
+        $navbarRightContainer.append($toggle_button_container);
+        this.$toggle_button_container = $toggle_button_container;
+
+        this.cursorGuide = new CursorGuide(this.columnContainer, this);
+
+        this.cursorGuideButton = new CursorGuideButton(this, $toggle_button_container.get(0));
+
+        this.centerLineButton = new CenterLineButton(this, $toggle_button_container.get(0));
+
+        this.setTrackLabelVisibility(config.showTrackLabels);
+        this.trackLabelControl = new TrackLabelControl($toggle_button_container.get(0), this);
+
+        // ROI Control
+        this.roiTableControl = new ROITableControl($toggle_button_container.get(0), this);
+
+        this.sampleNameControl = new SampleNameControl($toggle_button_container.get(0), this);
+
+        if (true === config.showSVGButton) {
+            this.svgSaveControl = new SVGSaveControl($toggle_button_container.get(0), this);
+        }
+
+        if (config.customButtons) {
+            for (let b of config.customButtons) {
+                new CustomButton($toggle_button_container.get(0), this, b);
+            }
+        }
+
+        this.zoomWidget = new ZoomWidget(this, $navbarRightContainer.get(0));
+
+        if (false === config.showNavigation) {
+            this.$navigation.hide();
+        }
+
+        this.inputDialog = new InputDialog(this.root);
+        this.inputDialog.container.id = `igv-input-dialog-${domUtils.guid()}`;
+
+        this.dataRangeDialog = new DataRangeDialog(this, $$1(this.root));
+        this.dataRangeDialog.$container.get(0).id = `igv-data-range-dialog-${domUtils.guid()}`;
+
+        this.genericColorPicker = new GenericColorPicker({parent: this.columnContainer, width: 432});
+        this.genericColorPicker.container.id = `igv-track-color-picker-${domUtils.guid()}`;
+
+        return $navBar
+
+    }
+
+    getSampleNameViewportWidth() {
+        return false === this.showSampleNames ? 0 : this.sampleNameViewportWidth
+    }
+
+    isMultiLocusMode() {
+        return this.referenceFrameList && this.referenceFrameList.length > 1
+    };
+
+    addTrackToFactory(name, track) {
+        TrackFactory.addTrack(name, track);
+    }
+
+    isMultiLocusWholeGenomeView() {
+
+        if (undefined === this.referenceFrameList || 1 === this.referenceFrameList.length) {
+            return false
+        }
+
+        for (let referenceFrame of this.referenceFrameList) {
+            if ('all' === referenceFrame.chr.toLowerCase()) {
+                return true
+            }
+        }
+
+        return false
+    };
+
+    /**
+     * PUBLIC API FUNCTION
+     *
+     * Return the current genomic region as a locus string, or array of locus strings if in multi-locus view
+     * @returns {string|*[]|*}
+     */
+    currentLoci() {
+        const noCommaLocusString = (rf) => `${rf.chr}:${rf.start + 1}-${rf.end}`;
+        if (undefined === this.referenceFrameList || 0 === this.referenceFrameList.length) {
+            return ""
+        } else if (1 === this.referenceFrameList.length) {
+            return noCommaLocusString(this.referenceFrameList[0])
+        } else {
+            return this.referenceFrameList.map(rf => noCommaLocusString(rf))
+        }
+    }
+
+    /**
+     * Render browse display as SVG
+     * @returns {string}
+     */
+    toSVG() {
+
+        const {y, width, height} = this.columnContainer.getBoundingClientRect();
+
+        const h_render = 8000;
+
+        const config =
+            {
+
+                width,
+                height: h_render,
+
+                backdropColor: 'white',
+
+                multiLocusGap: 0,
+
+                viewbox:
+                    {
+                        x: 0,
+                        y: 0,
+                        width,
+                        height: h_render
+                    }
+
+            };
+
+        const context = new ctx(config);
+
+        // tracks -> SVG
+        const delta = {deltaX: 0, deltaY: -y};
+        for (let trackView of this.trackViews) {
+            trackView.renderSVGContext(context, delta);
+        }
+
+        this.roiManager.renderSVGContext(context, delta);
+
+        // reset height to trim away unneeded svg canvas real estate. Yes, a bit of a hack.
+        context.setHeight(height);
+
+        return context.getSerializedSvg(true)
+
+    }
+
+    renderSVG($container) {
+        const svg = this.toSVG();
+        $container.empty();
+        $container.append(svg);
+
+        return svg
+    }
+
+    saveSVGtoFile(config) {
+
+        let svg = this.toSVG();
+
+        if (config.$container) {
+            config.$container.empty();
+            config.$container.append(svg);
+        }
+
+        const path = config.filename || 'igvjs.svg';
+        const data = URL.createObjectURL(new Blob([svg], {type: "application/octet-stream"}));
+        download(path, data);
+    }
+
+    /**
+     * Initialize a session from an object, json, or by loading from a file.
+     *
+     * TODO Really should be split into at least 2 functions, load from file and load from object/json
+     *
+     * @param options
+     * @returns {*}
+     */
+    async loadSession(options) {
+
+        // TODO: depricated
+        this.roiSets = [];
+
+        let session;
+        if (options.url || options.file) {
+            session = await loadSessionFile(options);
+        } else {
+            session = options;
+        }
+        return this.loadSessionObject(session)
+
+
+        async function loadSessionFile(options) {
+
+            const urlOrFile = options.url || options.file;
+
+            if (options.url && (options.url.startsWith("blob:") || options.url.startsWith("data:"))) {
+                const json = Browser.uncompressSession(options.url);
+                return JSON.parse(json)
+
+            } else {
+                let filename = options.filename;
+                if (!filename) {
+                    filename = (options.url ? await getFilename$1(options.url) : options.file.name);
+                }
+
+                if (filename.endsWith(".xml")) {
+
+                    const knownGenomes = GenomeUtils.KNOWN_GENOMES;
+                    const string = await igvxhr.loadString(urlOrFile);
+                    return new XMLSession(string, knownGenomes)
+
+                } else if (filename.endsWith(".json")) {
+                    return igvxhr.loadJson(urlOrFile)
+                } else {
+                    return undefined
+                }
+            }
+        }
+    }
+
+
+    /**
+     * Note:  public API function
+     * @param session
+     * @returns {Promise<void>}
+     */
+    async loadSessionObject(session) {
+
+        // prepare to load a new session, discarding DOM and state
+        this.cleanHouseForSession();
+
+        this.showSampleNames = session.showSampleNames || false;
+        this.sampleNameControl.setState(this.showSampleNames === true);
+
+        if (session.sampleNameViewportWidth) {
+            this.sampleNameViewportWidth = session.sampleNameViewportWidth;
+        }
+
+        // axis column
+        createColumn(this.columnContainer, 'igv-axis-column');
+
+        // SampleName column
+        createColumn(this.columnContainer, 'igv-sample-name-column');
+
+        // Track scrollbar column
+        createColumn(this.columnContainer, 'igv-scrollbar-column');
+
+        // Track drag/reorder column
+        createColumn(this.columnContainer, 'igv-track-drag-column');
+
+        // Track gear column
+        createColumn(this.columnContainer, 'igv-gear-menu-column');
+
+        const genomeOrReference = session.reference || session.genome;
+        if(!genomeOrReference) {
+            console.warn("No genome or reference object specified");
+            return;
+        }
+        const genomeConfig = await GenomeUtils.expandReference(this.alert, genomeOrReference);
+
+
+        await this.loadReference(genomeConfig, session.locus);
+
+        this.centerLineList = this.createCenterLineList(this.columnContainer);
+
+        // Create ideogram and ruler track.  Really this belongs in browser initialization, but creation is
+        // deferred because ideogram and ruler are treated as "tracks", and tracks require a reference frame
+        let ideogramHeight = 0;
+        if (false !== session.showIdeogram) {
+
+            const track = new IdeogramTrack(this);
+            track.id = 'ideogram';
+
+            const trackView = new TrackView(this, this.columnContainer, track);
+            const {$viewport} = trackView.viewports[0];
+            ideogramHeight = getElementAbsoluteHeight($viewport.get(0));
+
+            this.trackViews.push(trackView);
+        }
+
+        if (false !== session.showRuler) {
+            this.trackViews.push(new TrackView(this, this.columnContainer, new RulerTrack(this)));
+        }
+
+        // Restore gtex selections.
+        if (session.gtexSelections) {
+            for (let referenceFrame of this.referenceFrameList) {
+                for (let s of Object.keys(session.gtexSelections)) {
+                    const gene = session.gtexSelections[s].gene;
+                    const snp = session.gtexSelections[s].snp;
+                    referenceFrame.selection = new GtexSelection(gene, snp);
+                }
+            }
+        }
+
+        if (this.roiManager) {
+            this.roiManager.dispose();
+        }
+
+        const roiMenu = new ROIMenu(this, this.columnContainer);
+        const roiTableConfig =
+            {
+                browser: this,
+                parent: this.columnContainer,
+                headerTitle: 'Regions of Interest',
+                dismissHandler: () => this.roiTableControl.buttonHandler(false),
+                gotoButtonHandler: ROITable.gotoButtonHandler
+            };
+        if (session.roi) {
+
+            const roiSetList = session.roi.map(c => new ROISet(c, this.genome));
+
+            const named = roiSetList.filter(({name}) => name !== undefined && name.length > 0);
+
+            roiTableConfig.columnFormat = ROITable.getColumnFormatConfiguration(named.length > 0);
+
+            const roiTable = new ROITable(roiTableConfig);
+
+            this.roiManager = new ROIManager(this, roiMenu, roiTable, ideogramHeight, roiSetList);
+        } else {
+
+            roiTableConfig.columnFormat = ROITable.getColumnFormatConfiguration(false);
+
+            const roiTable = new ROITable(roiTableConfig);
+
+            this.roiManager = new ROIManager(this, roiMenu, roiTable, ideogramHeight, undefined);
+        }
+
+        await this.roiManager.initialize();
+
+        // Tracks.  Start with genome tracks, if any, then append session tracks
+        const genomeTracks = genomeConfig.tracks || [];
+        const trackConfigurations = session.tracks ? genomeTracks.concat(session.tracks) : genomeTracks;
+
+        // Ensure that we always have a sequence track with no explicit URL (=> the reference genome sequence track)
+        const pushSequenceTrack = trackConfigurations.filter(track => 'sequence' === track.type && !track.url && !track.fastaURL).length === 0;
+        if (pushSequenceTrack /*&& false !== this.config.showSequence*/) {
+            trackConfigurations.push({type: "sequence", order: defaultSequenceTrackOrder});
+        }
+
+        // Maintain track order unless explicitly set
+        let trackOrder = 1;
+        for (let t of trackConfigurations) {
+            if (undefined === t.order) {
+                t.order = trackOrder++;
+            }
+        }
+
+        await this.loadTrackList(trackConfigurations);
+
+        // The ruler and ideogram tracks are not explicitly loaded, but needs updated nonetheless.
+        for (let rtv of this.trackViews.filter((tv) => tv.track.type === 'ruler' || tv.track.type === 'ideogram')) {
+            rtv.updateViews();
+        }
+
+        this.updateUIWithReferenceFrameList();
+
+    }
+
+    createCenterLineList(columnContainer) {
+
+        const centerLines = columnContainer.querySelectorAll('.igv-center-line');
+        for (let i = 0; i < centerLines.length; i++) {
+            centerLines[i].remove();
+        }
+
+        const centerLineList = [];
+        const viewportColumns = columnContainer.querySelectorAll('.igv-column');
+        for (let i = 0; i < viewportColumns.length; i++) {
+            centerLineList.push(new ViewportCenterLine(this, this.referenceFrameList[i], viewportColumns[i]));
+        }
+
+        return centerLineList
+    }
+
+    /**
+     * Load a reference genome object.  This includes the fasta, and optional cytoband, but no tracks.  This method
+     * is used by loadGenome and loadSession.
+     *
+     * @param genomeConfig
+     * @param initialLocus
+     */
+    async loadReference(genomeConfig, initialLocus) {
+
+        const genome = await GenomeUtils.loadGenome(genomeConfig);
+
+        const genomeChange = undefined === this.genome || (this.genome.id !== genome.id);
+
+        this.genome = genome;
+
+        this.updateNavbarDOMWithGenome(genome);
+
+        if (genomeChange) {
+            this.removeAllTracks();
+        }
+
+        let locus = getInitialLocus(initialLocus, genome);
+        const locusFound = await this.search(locus, true);
+        if (!locusFound) {
+            console.log("Initial locus not found: " + locus);
+            locus = genome.getHomeChromosomeName();
+            const locusFound = await this.search(locus, true);
+            if (!locusFound) {
+                throw new Error("Cannot set initial locus")
+            }
+        }
+
+        if (genomeChange && this.circularView) {
+            this.circularView.setAssembly({
+                name: this.genome.id,
+                id: this.genome.id,
+                chromosomes: makeCircViewChromosomes(this.genome)
+            });
+        }
+    }
+
+    cleanHouseForSession() {
+
+        for (let trackView of this.trackViews) {
+            // empty axis column, viewport columns, sampleName column, scroll column, drag column, gear column
+            trackView.removeDOMFromColumnContainer();
+        }
+
+        // discard all columns
+        const elements = this.columnContainer.querySelectorAll('.igv-axis-column, .igv-column-shim, .igv-column, .igv-sample-name-column, .igv-scrollbar-column, .igv-track-drag-column, .igv-gear-menu-column');
+        elements.forEach(column => column.remove());
+
+        this.trackViews = [];
+
+        if (this.circularView) {
+            this.circularView.clearChords();
+        }
+
+    }
+
+    updateNavbarDOMWithGenome(genome) {
+
+        // If the genome is defined directly from a fasta file or data url the "id" will be the full url.  Don't display
+        // this.
+        let genomeLabel = (genome.id && genome.id.length < 10 ? genome.id : '');
+        this.$current_genome.text(genomeLabel);
+        this.$current_genome.attr('title', genome.id || '');
+        this.chromosomeSelectWidget.update(genome);
+    }
+
+    /**
+     * Load a genome, defined by a string ID or a json-like configuration object. This includes a fasta reference
+     * as well as optional cytoband and annotation tracks.
+     *
+     * @param idOrConfig
+     * @returns genome
+     */
+    async loadGenome(idOrConfig) {
+
+        const genomeConfig = await GenomeUtils.expandReference(this.alert, idOrConfig);
+        await this.loadReference(genomeConfig, undefined);
+
+        const tracks = genomeConfig.tracks || [];
+
+        // Insure that we always have a sequence track
+        const pushSequenceTrack = tracks.filter(track => track.type === 'sequence').length === 0;
+        if (pushSequenceTrack) {
+            tracks.push({type: "sequence", order: defaultSequenceTrackOrder});
+        }
+
+        await this.loadTrackList(tracks);
+
+        await this.updateViews();
+
+        return this.genome
+    }
+
+    /**
+     * Called after a session load, search, pan (horizontal drag), or resize
+     *
+     * @param referenceFrameList
+     */
+    updateUIWithReferenceFrameList() {
+
+        const referenceFrameList = this.referenceFrameList;
+
+        this.updateLocusSearchWidget();
+
+        const isWGV = (this.isMultiLocusWholeGenomeView() || GenomeUtils.isWholeGenomeView(referenceFrameList[0].chr));
+
+        this.navbarManager.navbarDidResize(this.$navigation.width(), isWGV);
+
+        toggleTrackLabels(this.trackViews, this.trackLabelsVisible);
+
+        this.setCenterLineAndCenterLineButtonVisibility(!GenomeUtils.isWholeGenomeView(referenceFrameList[0].chr));
+
+    }
+
+    setTrackLabelVisibility(isVisible) {
+        toggleTrackLabels(this.trackViews, isVisible);
+    }
+
+    setROITableVisibility(isVisible) {
+        true === isVisible ? this.roiManager.presentTable() : this.roiManager.dismissTable();
+    }
+
+    // cursor guide
+    setCursorGuideVisibility(cursorGuideVisible) {
+
+        if (cursorGuideVisible) {
+            this.cursorGuide.show();
+        } else {
+            this.cursorGuide.hide();
+        }
+    }
+
+    setCustomCursorGuideMouseHandler(mouseHandler) {
+        this.cursorGuide.customMouseHandler = mouseHandler;
+    }
+
+    // center line
+    setCenterLineVisibility(isCenterLineVisible) {
+        for (let centerLine of this.centerLineList) {
+            if (true === isCenterLineVisible) {
+                centerLine.show();
+                centerLine.repaint();
+            } else {
+                centerLine.hide();
+            }
+        }
+    }
+
+    setCenterLineAndCenterLineButtonVisibility(isCenterLineVisible) {
+
+        for (let centerLine of this.centerLineList) {
+            const isShown = isCenterLineVisible && centerLine.isVisible;
+            isShown ? centerLine.show() : centerLine.container.style.display = 'none';
+        }
+
+        const isShown = isCenterLineVisible && this.centerLineButton.isVisible;
+        isShown ? this.centerLineButton.show() : this.centerLineButton.button.style.display = 'none';
+
+    }
+
+    /**
+     * Public API function. Load a list of tracks.
+     *
+     * @param configList  Array of track configurations
+     * @returns {Promise<*>}  Promise for track objects
+     */
+    async loadTrackList(configList) {
+
+        const promises = [];
+        for (let config of configList) {
+            promises.push(this._loadTrack(config));
+        }
+
+        const loadedTracks = await Promise.all(promises);
+        const groupAutoscaleViews = this.trackViews.filter(function (trackView) {
+            return trackView.track.autoscaleGroup
+        });
+        if (groupAutoscaleViews.length > 0) {
+            this.updateViews();
+        }
+        return loadedTracks
+    }
+
+    /**
+     * Public API function
+     *
+     * Load an individual track.  If part of an autoscale group force a general update
+     *
+     * @param config  A track configuration
+     * @returns {Promise<*>}  Promise for track object
+     */
+    async loadTrack(config) {
+
+        const newTrack = this._loadTrack(config);
+
+        if (config.autoscaleGroup) {
+            // Await newTrack load and update all views
+            await newTrack;
+            this.updateViews();
+        }
+
+        return newTrack
+    }
+
+    /**
+     * Return a promise to load a track.   Private function used by loadTrack() and loadTrackList()
+     *
+     * @param config
+     * @returns {*}
+     */
+
+    async _loadTrack(config) {
+
+        // config might be json
+        if (isString$2(config)) {
+            config = JSON.parse(config);
+        }
+
+        try {
+
+            const newTrack = await this.createTrack(config);
+
+            if (undefined === newTrack) {
+                return
+            }
+
+            // Set order field of track here.  Otherwise track order might get shuffled during asynchronous load
+            if (undefined === newTrack.order) {
+                newTrack.order = this.trackViews.length;
+            }
+
+            const trackView = new TrackView(this, this.columnContainer, newTrack);
+            this.trackViews.push(trackView);
+            toggleTrackLabels(this.trackViews, this.trackLabelsVisible);
+            this.reorderTracks();
+            this.fireEvent('trackorderchanged', [this.getTrackOrder()]);
+
+            if (typeof newTrack.postInit === 'function') {
+                try {
+                    trackView.startSpinner();
+                    await newTrack.postInit();
+                } finally {
+                    trackView.stopSpinner();
+                }
+            }
+
+            if (!newTrack.autoscaleGroup) {
+                // Group autoscale will get updated later (as a group)
+                if (config.sync) {
+                    await trackView.updateViews();
+                } else {
+                    trackView.updateViews();
+                }
+            }
+
+            if (typeof newTrack.hasSamples === 'function' && newTrack.hasSamples()) {
+                if (this.config.showSampleNameButton !== false) {
+                    this.sampleNameControl.show();   // If not explicitly set
+                }
+            }
+
+            return newTrack
+
+        } catch (error) {
+            const httpMessages =
+                {
+                    "401": "Access unauthorized",
+                    "403": "Access forbidden",
+                    "404": "Not found"
+                };
+            console.error(error);
+            let msg = error.message || error.error || error.toString();
+            if (httpMessages.hasOwnProperty(msg)) {
+                msg = httpMessages[msg];
+            }
+            msg += (": " + config.url);
+            this.alert.present(new Error(msg), undefined);
+        }
+    }
+
+    /**
+     * Public API function - load a region of interest
+     *
+     * @param config  A "track" configuration object, or array of objects,  of type == "annotation" (bed, gff, etc)
+     *
+     * @returns {Promise<void>}
+     */
+    async loadROI(config) {
+        await this.roiManager.loadROI(config, this.genome);
+    }
+
+    /**
+     * Public API function - clear all regions of interest (ROI), including preloaded and user-defined ROIs
+     */
+    clearROIs() {
+        this.roiManager.clearROIs();
+    }
+
+    /**
+     * Public API function. Return a promise for the list of user-defined regions-of-interest
+     */
+    async getUserDefinedROIs() {
+
+        if (this.roiManager) {
+
+            const set = await this.roiManager.getUserDefinedROISet();
+            if (undefined === set) {
+                return []
+            }
+
+            const featureHash = await set.getAllFeatures();
+            const featureList = [];
+            for (let value of Object.values(featureHash)) {
+                featureList.push(...value);
+            }
+
+            return featureList
+
+        } else {
+            return []
+        }
+    }
+
+    getRulerTrackView() {
+        const list = this.trackViews.filter(({track}) => 'ruler' === track.id);
+        return list.length > 0 ? list[0] : undefined
+    }
+
+    /**
+     * Create a Track object.
+     * @param config
+     * @returns {Promise<*>}
+     */
+    async createTrack(config) {
+
+        // Resolve function and promise urls
+        let url = await resolveURL(config.url || config.fastaURL);
+        if (isString$2(url)) {
+            url = url.trim();
+        }
+
+        if (url) {
+            if (config.format) {
+                config.format = config.format.toLowerCase();
+            } else if (config.fastaURL) {
+                config.format = "fasta";  // by definition
+            } else {
+                let filename = config.filename;
+                if (!filename) {
+                    filename = await getFilename$1(url);
+                }
+
+                const format = inferFileFormat(filename);
+
+                if ("tsv" === format) {
+                    config.format = await inferFileFormatFromHeader(config);
+                } else if (format) {
+                    config.format = format;
+                } else {
+                    if (config.sourceType === "htsget") {
+                        // Check for htsget URL.  This is a longshot
+                        await HtsgetReader.inferFormat(config);
+                    }
+                }
+            }
+        }
+
+
+        let type = config.type ? config.type.toLowerCase() : undefined;
+
+        if (!type) {
+            type = inferTrackType(config);
+            if ("bedtype" === type) {
+                // Bed files must be read to determine track type
+                const featureSource = FeatureSource(config, this.genome);
+                config._featureSource = featureSource;    // This is a temp variable, bit of a hack
+                const trackType = await featureSource.trackType();
+                if (trackType) {
+                    type = trackType;
+                } else {
+                    type = "annotation";
+                }
+            }
+            // Record in config to make type persistent in session
+            config.type = type;
+        }
+
+        // Set defaults if specified
+        if (this.trackDefaults && type) {
+            const settings = this.trackDefaults[type];
+            if (settings) {
+                for (let property in settings) {
+                    if (settings.hasOwnProperty(property) && config[property] === undefined) {
+                        config[property] = settings[property];
+                    }
+                }
+            }
+        }
+
+        const track = TrackFactory.getTrack(type, config, this);
+        if (undefined === track) {
+            this.alert.present(new Error(`Error creating track.  Could not determine track type for file: ${config.url || config}`), undefined);
+        } else {
+
+            if (config.roi && config.roi.length > 0) {
+                track.roiSets = config.roi.map(r => new TrackROISet(r, this.genome));
+            }
+
+            return track
+        }
+    }
+
+
+    reorderTracks() {
+
+        this.trackViews.sort(function (a, b) {
+
+            const firstSortOrder = tv => {
+                return 'ideogram' === tv.track.id ? 1 :
+                    'ruler' === tv.track.id ? 2 :
+                        3
+            };
+
+            const aOrder1 = firstSortOrder(a);
+            const bOrder1 = firstSortOrder(b);
+            if (aOrder1 === bOrder1) {
+                const aOrder2 = a.track.order || 0;
+                const bOrder2 = b.track.order || 0;
+                return aOrder2 - bOrder2
+            } else {
+                return aOrder1 - bOrder1
+            }
+        });
+
+        // discard current track order
+        for (let {axis, viewports, sampleNameViewport, outerScroll, dragHandle, gearContainer} of this.trackViews) {
+
+            axis.remove();
+
+            for (let {$viewport} of viewports) {
+                $viewport.detach();
+            }
+
+            sampleNameViewport.viewport.remove();
+
+            outerScroll.remove();
+            dragHandle.remove();
+            gearContainer.remove();
+        }
+
+        // Reattach the divs to the dom in the correct order
+        const viewportColumns = this.columnContainer.querySelectorAll('.igv-column');
+
+        for (let {axis, viewports, sampleNameViewport, outerScroll, dragHandle, gearContainer} of this.trackViews) {
+
+            this.columnContainer.querySelector('.igv-axis-column').appendChild(axis);
+
+            for (let i = 0; i < viewportColumns.length; i++) {
+                const {$viewport} = viewports[i];
+                viewportColumns[i].appendChild($viewport.get(0));
+            }
+
+            this.columnContainer.querySelector('.igv-sample-name-column').appendChild(sampleNameViewport.viewport);
+
+            this.columnContainer.querySelector('.igv-scrollbar-column').appendChild(outerScroll);
+
+            this.columnContainer.querySelector('.igv-track-drag-column').appendChild(dragHandle);
+
+            this.columnContainer.querySelector('.igv-gear-menu-column').appendChild(gearContainer);
+        }
+
+    }
+
+    getTrackOrder() {
+        return this.trackViews.filter(tv => tv.track && tv.track.name).map(tv => tv.track.name)
+    }
+
+    /**
+     * NOTE: Public API function
+     *
+     * Remove all tracks matching the given name.  Usually this will be a single track, but there is no
+     * guarantee names are unique
+     *
+     * @param name
+     */
+    removeTrackByName(name) {
+        const copy = this.trackViews.slice();
+        for (let trackView of copy) {
+            if (name === trackView.track.name) {
+                this.removeTrack(trackView.track);
+            }
+        }
+    }
+
+    /**
+     * NOTE: Public API function
+     *
+     * Remove the given track.  If it has already been removed this is a no-op.
+     *
+     * @param track
+     */
+    removeTrack(track) {
+        for (let trackView of this.trackViews) {
+            if (track === trackView.track) {
+                this._removeTrack(trackView.track);
+                break
+            }
+        }
+    }
+
+    _removeTrack(track) {
+        if (track.disposed) return
+        this.trackViews.splice(this.trackViews.indexOf(track.trackView), 1);
+        this.fireEvent('trackremoved', [track]);
+        this.fireEvent('trackorderchanged', [this.getTrackOrder()]);
+        if (track.trackView) {
+            track.trackView.dispose();
+        }
+    }
+
+    /**
+     * API function
+     */
+    removeAllTracks() {
+
+        const remainingTrackViews = [];
+
+        for (let trackView of this.trackViews) {
+
+            if (trackView.track.id !== 'ruler' && trackView.track.id !== 'ideogram') {
+                this.fireEvent('trackremoved', [trackView.track]);
+                trackView.dispose();
+            } else {
+                remainingTrackViews.push(trackView);
+            }
+        }
+
+        this.trackViews = remainingTrackViews;
+    }
+
+    /**
+     *
+     * @param property
+     * @param value
+     * @returns {Array}  tracks with given property value.  e.g. findTracks("type", "annotation")
+     */
+    findTracks(property, value) {
+
+        let f = typeof property === 'function' ?
+            trackView => property(trackView.track) :
+            trackView => value === trackView.track[property];
+
+        return this.trackViews.filter(f).map(tv => tv.track)
+    }
+
+    /**
+     * Set the track height globally for all tracks.  (Note: Its not clear why this is useful).
+     * @param newHeight
+     */
+    setTrackHeight(newHeight) {
+
+        this.trackHeight = newHeight;
+
+        this.trackViews.forEach(function (trackView) {
+            trackView.setTrackHeight(newHeight);
+        });
+
+    }
+
+    /**
+     * API function to signal that this browser visibility has changed, e.g. from hiding/showing in a tab interface.
+     *
+     * @returns {Promise<void>}
+     */
+    async visibilityChange() {
+        this.layoutChange();
+    }
+
+    async layoutChange() {
+
+        const status = this.referenceFrameList.find(referenceFrame => referenceFrame.bpPerPixel < 0);
+
+        if (status) {
+            const viewportWidth = this.calculateViewportWidth(this.referenceFrameList.length);
+            for (let referenceFrame of this.referenceFrameList) {
+                referenceFrame.bpPerPixel = (referenceFrame.end - referenceFrame.start) / viewportWidth;
+            }
+        }
+
+        if (this.referenceFrameList) {
+            const isWGV = this.isMultiLocusWholeGenomeView() || GenomeUtils.isWholeGenomeView(this.referenceFrameList[0].chr);
+            this.navbarManager.navbarDidResize(this.$navigation.width(), isWGV);
+        }
+
+        resize.call(this);
+        await this.updateViews();
+    }
+
+    async updateViews() {
+
+        const trackViews = this.trackViews;
+
+        this.updateLocusSearchWidget();
+
+        for (let centerGuide of this.centerLineList) {
+            centerGuide.repaint();
+        }
+
+        // Don't autoscale while dragging.
+        if (this.dragObject) {
+            for (let trackView of trackViews) {
+                await trackView.updateViews();
+            }
+        } else {
+            // Group autoscale
+            const groupAutoscaleTracks = {};
+            const otherTracks = [];
+            for (let trackView of trackViews) {
+                const group = trackView.track.autoscaleGroup;
+                if (group) {
+                    var l = groupAutoscaleTracks[group];
+                    if (!l) {
+                        l = [];
+                        groupAutoscaleTracks[group] = l;
+                    }
+                    l.push(trackView);
+                } else {
+                    otherTracks.push(trackView);
+                }
+            }
+
+            if (Object.entries(groupAutoscaleTracks).length > 0) {
+
+                const keys = Object.keys(groupAutoscaleTracks);
+                for (let group of keys) {
+
+                    const groupTrackViews = groupAutoscaleTracks[group];
+                    const promises = [];
+
+                    for (let trackView of groupTrackViews) {
+                        promises.push(trackView.getInViewFeatures());
+                    }
+
+                    const featureArray = await Promise.all(promises);
+
+                    var allFeatures = [], dataRange;
+
+                    for (let features of featureArray) {
+                        allFeatures = allFeatures.concat(features);
+                    }
+                    dataRange = doAutoscale(allFeatures);
+
+                    const p = [];
+                    for (let trackView of groupTrackViews) {
+                        trackView.track.dataRange = dataRange;
+                        trackView.track.autoscale = false;
+                        p.push(trackView.updateViews());
+                    }
+                    await Promise.all(p);
+                }
+
+            }
+
+            await Promise.all(otherTracks.map(tv => tv.updateViews()));
+            // for (let trackView of otherTracks) {
+            //     await trackView.updateViews(force);
+            // }
+        }
+
+    }
+
+    repaintViews() {
+        for (let trackView of this.trackViews) {
+            trackView.repaintViews();
+        }
+    }
+
+    updateLocusSearchWidget() {
+
+        if(!this.referenceFrameList) return
+        const referenceFrameList = this.referenceFrameList;
+
+        // Update end position of reference frames based on pixel widths.  This is hacky, but its been done here
+        // for a long time, although indirectly.
+        const width = this.calculateViewportWidth(this.referenceFrameList.length);
+        for (let referenceFrame of referenceFrameList) {
+            referenceFrame.end = referenceFrame.start + referenceFrame.bpPerPixel * width;
+        }
+
+        this.chromosomeSelectWidget.select.value = referenceFrameList.length === 1 ? this.referenceFrameList[0].chr : '';
+
+        const loc = this.referenceFrameList.map(rf => rf.getLocusString()).join(' ');
+        //const loc = this.referenceFrameList.length === 1 ?   this.referenceFrameList[0].getLocusString() : '';
+        this.$searchInput.val(loc);
+
+        this.fireEvent('locuschange', [this.referenceFrameList]);
+    }
+
+    calculateViewportWidth(columnCount) {
+
+        let {width} = this.columnContainer.getBoundingClientRect();
+
+        const sampleNameViewportWidth = this.getSampleNameViewportWidth();
+
+        width -= igv_axis_column_width + sampleNameViewportWidth + igv_scrollbar_outer_width + igv_track_manipulation_handle_width + igv_track_gear_menu_column_width;
+
+        width -= column_multi_locus_shim_width * (columnCount - 1);
+
+        return Math.floor(width / columnCount)
+    }
+
+    getCenterLineXOffset() {
+        let {width: columnContainerWidth} = this.columnContainer.getBoundingClientRect();
+        columnContainerWidth -= igv_axis_column_width + this.getSampleNameViewportWidth() + igv_scrollbar_outer_width + igv_track_manipulation_handle_width + igv_track_gear_menu_column_width;
+        return Math.floor(columnContainerWidth / 2 + igv_axis_column_width)
+    }
+
+    minimumBases() {
+        return this.config.minimumBases
+    }
+
+    // Zoom in by a factor of 2, keeping the same center location
+    zoomIn() {
+        this.zoomWithScaleFactor(0.5);
+    };
+
+    // Zoom out by a factor of 2, keeping the same center location if possible
+    zoomOut() {
+        this.zoomWithScaleFactor(2.0);
+    };
+
+    async zoomWithScaleFactor(scaleFactor, centerBPOrUndefined, referenceFrameOrUndefined) {
+
+        if(!this.referenceFrameList) return
+
+        const viewportWidth = this.calculateViewportWidth(this.referenceFrameList.length);
+
+        let referenceFrames = referenceFrameOrUndefined ? [referenceFrameOrUndefined] : this.referenceFrameList;
+
+        for (let referenceFrame of referenceFrames) {
+            referenceFrame.zoomWithScaleFactor(this, scaleFactor, viewportWidth, centerBPOrUndefined);
+        }
+    }
+
+    /**
+     * Add a new multi-locus panel for the specified region
+     * @param chr
+     * @param start
+     * @param end
+     * @param referenceFrameLeft - optional, if supplied new panel should be placed to the immediate right
+     */
+    async addMultiLocusPanel(chr, start, end, referenceFrameLeft) {
+
+        if(!this.referenceFrameList) return
+
+        // account for reduced viewport width as a result of adding right mate pair panel
+        const viewportWidth = this.calculateViewportWidth(1 + this.referenceFrameList.length);
+        const scaleFactor = this.calculateViewportWidth(this.referenceFrameList.length) / this.calculateViewportWidth(1 + this.referenceFrameList.length);
+        for (let refFrame of this.referenceFrameList) {
+            refFrame.bpPerPixel *= scaleFactor;
+        }
+
+        const bpp = (end - start) / viewportWidth;
+        const newReferenceFrame = new ReferenceFrame(this.genome, chr, start, end, bpp);
+        const indexLeft = referenceFrameLeft ? this.referenceFrameList.indexOf(referenceFrameLeft) : this.referenceFrameList.length - 1;
+        const indexRight = 1 + indexLeft;
+
+        // TODO -- this is really ugly
+        const {$viewport} = this.trackViews[0].viewports[indexLeft];
+        const viewportColumn = viewportColumnManager.insertAfter($viewport.get(0).parentElement);
+
+        if (indexRight === this.referenceFrameList.length) {
+            this.referenceFrameList.push(newReferenceFrame);
+            for (let trackView of this.trackViews) {
+                const viewport = createViewport(trackView, viewportColumn, newReferenceFrame);
+                trackView.viewports.push(viewport);
+            }
+        } else {
+            this.referenceFrameList.splice(indexRight, 0, newReferenceFrame);
+            for (let trackView of this.trackViews) {
+                const viewport = createViewport(trackView, viewportColumn, newReferenceFrame);
+                trackView.viewports.splice(indexRight, 0, viewport);
+            }
+        }
+
+
+        this.centerLineList = this.createCenterLineList(this.columnContainer);
+
+        resize.call(this);
+        await this.updateViews(true);
+    }
+
+    async removeMultiLocusPanel(referenceFrame) {
+
+        // find the $column corresponding to this referenceFrame and remove it
+        const index = this.referenceFrameList.indexOf(referenceFrame);
+        const {$viewport} = this.trackViews[0].viewports[index];
+        viewportColumnManager.removeColumnAtIndex(index, $viewport.parent().get(0));
+
+        for (let {viewports} of this.trackViews) {
+            viewports[index].dispose();
+            viewports.splice(index, 1);
+        }
+
+        this.referenceFrameList.splice(index, 1);
+
+        if (1 === this.referenceFrameList.length && this.getRulerTrackView()) {
+            for (let rulerViewport of this.getRulerTrackView().viewports) {
+                rulerViewport.dismissLocusLabel();
+            }
+        }
+
+        const scaleFactor = this.calculateViewportWidth(1 + this.referenceFrameList.length) / this.calculateViewportWidth(this.referenceFrameList.length);
+
+        await this.rescaleForMultiLocus(scaleFactor);
+
+    }
+
+    /**
+     * Goto the locus represented by the selected referenceFrame, discarding all other panels
+     *
+     * @param referenceFrame
+     * @returns {Promise<void>}
+     */
+    async gotoMultilocusPanel(referenceFrame) {
+
+        const referenceFrameIndex = this.referenceFrameList.indexOf(referenceFrame);
+
+        // Remove columns for unselected panels
+        this.columnContainer.querySelectorAll('.igv-column').forEach((column, c) => {
+            if (c === referenceFrameIndex) ; else {
+                column.remove();
+            }
+        });
+
+        // Remove all column shims
+        this.columnContainer.querySelectorAll('.igv-column-shim').forEach(shim => shim.remove());
+
+        // Discard viewports
+        for (let trackView of this.trackViews) {
+            const retain = trackView.viewports[referenceFrameIndex];
+            trackView.viewports.filter((viewport, i) => i !== referenceFrameIndex).forEach(viewport => viewport.dispose());
+            trackView.viewports = [retain];
+        }
+
+        const viewportWidth = this.calculateViewportWidth(1);
+        referenceFrame.bpPerPixel = (referenceFrame.end - referenceFrame.start) / viewportWidth;
+        this.referenceFrameList = [referenceFrame];
+
+        this.trackViews.forEach(({viewports}) => viewports.forEach(viewport => viewport.setWidth(viewportWidth)));
+
+        this.centerLineList = this.createCenterLineList(this.columnContainer);
+
+        this.updateUIWithReferenceFrameList();
+
+        await this.updateViews(true);
+
+    }
+
+    async rescaleForMultiLocus(scaleFactor) {
+
+        const viewportWidth = this.calculateViewportWidth(this.referenceFrameList.length);
+
+        for (let referenceFrame of this.referenceFrameList) {
+            referenceFrame.bpPerPixel *= scaleFactor;
+        }
+
+        for (let {viewports} of this.trackViews) {
+
+            for (let viewport of viewports) {
+                viewport.setWidth(viewportWidth);
+            }
+        }
+
+        this.centerLineList = this.createCenterLineList(this.columnContainer);
+
+        this.updateUIWithReferenceFrameList();
+
+        await this.updateViews();
+
+    }
+
+    /**
+     * @deprecated  This is a deprecated method with no known usages.  To be removed in a future release.
+     */
+    async goto(chr, start, end) {
+        await this.search(chr + ":" + start + "-" + end);
+    }
+
+    /**
+
+     * Search for the locus string -- this function is called from various igv.js GUI elements, and is not part of the
+     * API.  Wraps ```search``` and presents an error dialog if false.
+     *
+     * @param string
+     * @param init
+     * @returns {Promise<void>}
+     */
+    async doSearch(string, init) {
+        const success = await this.search(string, init);
+        if (!success) {
+            this.alert.present(new Error(`Unrecognized locus: <b> ${string} </b>`));
+        }
+        return success
+    }
+
+
+    /**
+     * Search for the locus string
+     * NOTE: This is part of the API
+     * @param string
+     * @param init  true if called during browser initialization
+     * @returns {Promise<boolean>}  true if found, false if not
+     */
+    async search(string, init) {
+
+        const loci = await search(this, string);
+
+        if (loci && loci.length > 0) {
+
+            // create reference frame list based on search loci
+            this.referenceFrameList = createReferenceFrameList(loci, this.genome, this.flanking, this.minimumBases(), this.calculateViewportWidth(loci.length), this.isSoftclipped());
+
+            // discard viewport DOM elements
+            for (let trackView of this.trackViews) {
+                // empty axis column, viewport columns, sampleName column, scroll column, drag column, gear column
+                trackView.removeDOMFromColumnContainer();
+            }
+
+            // discard ONLY viewport columns
+            this.columnContainer.querySelectorAll('.igv-column-shim, .igv-column').forEach(el => el.remove());
+
+            // Insert viewport columns preceding the sample-name column
+            viewportColumnManager.insertBefore(this.columnContainer.querySelector('.igv-sample-name-column'), this.referenceFrameList.length);
+
+            this.centerLineList = this.createCenterLineList(this.columnContainer);
+
+            // Populate the columns
+            for (let trackView of this.trackViews) {
+                trackView.addDOMToColumnContainer(this, this.columnContainer, this.referenceFrameList);
+            }
+
+            this.updateUIWithReferenceFrameList();
+
+            if (!init) {
+                await this.updateViews();
+            }
+            return true
+        } else {
+            return false
+        }
+    }
+
+    async loadSampleInformation(url) {
+        var name = url;
+        if (isFile(url)) {
+            name = url.name;
+        }
+        var ext = name.substr(name.lastIndexOf('.') + 1);
+        if (ext === 'fam') {
+            this.sampleInformation = await loadPlinkFile(url);
+        }
+    };
+
+// EVENTS
+
+    on(eventName, fn) {
+        if (!this.eventHandlers[eventName]) {
+            this.eventHandlers[eventName] = [];
+        }
+        this.eventHandlers[eventName].push(fn);
+    };
+
+    /**
+     * @deprecated use off()
+     * @param eventName
+     * @param fn
+     */
+    un(eventName, fn) {
+        this.off(eventName, fn);
+    };
+
+    off(eventName, fn) {
+
+        if (!eventName) {
+            this.eventHandlers = {};   // Remove all event handlers
+        } else if (!fn) {
+            this.eventHandlers[eventName] = []; // Remove all eventhandlers matching name
+        } else {
+            // Remove specific event handler
+            const handlers = this.eventHandlers[eventName];
+            if (!handlers || handlers.length === 0) {
+                console.warn("No handlers to remove for event: " + eventName);
+            } else {
+                const callbackIndex = handlers.indexOf(fn);
+                if (callbackIndex !== -1) {
+                    this.eventHandlers[eventName].splice(callbackIndex, 1);
+                }
+            }
+        }
+    }
+
+    fireEvent(eventName, args, thisObj) {
+
+        const handlers = this.eventHandlers[eventName];
+        if (undefined === handlers || handlers.length === 0) {
+            return undefined
+        }
+
+        const scope = thisObj || window;
+        const results = handlers.map(function (event) {
+            return event.apply(scope, args)
+        });
+
+        return results[0]
+    }
+
+    dispose() {
+        this.removeMouseHandlers();
+        for (let trackView of this.trackViews) {
+            trackView.dispose();
+        }
+    }
+
+    /**
+     * Return a json-like object (note not a json string) representing the current state.
+     *
+     */
+    toJSON() {
+
+        const json = {
+            "version": version()
+        };
+
+        if (this.showSampleNames !== undefined) {
+            json['showSampleNames'] = this.showSampleNames;
+        }
+        if (this.sampleNameViewportWidth !== defaultSampleNameViewportWidth) {
+            json['sampleNameViewportWidth'] = this.sampleNameViewportWidth;
+        }
+
+        json["reference"] = this.genome.toJSON();
+        if (json.reference.fastaURL instanceof File) {   // Test specifically for File.  Other types of File-like objects might be savable) {
+            throw new Error(`Error. Sessions cannot include local file references ${json.reference.fastaURL.name}.`)
+        } else if (json.reference.indexURL instanceof File) {   // Test specifically for File.  Other types of File-like objects might be savable) {
+            throw new Error(`Error. Sessions cannot include local file references ${json.reference.indexURL.name}.`)
+        }
+
+        // Build locus array (multi-locus view).  Use the first track to extract the loci, any track could be used.
+        const locus = [];
+        const gtexSelections = {};
+        let hasGtexSelections = false;
+        let anyTrackView = this.trackViews[0];
+        for (let {referenceFrame} of anyTrackView.viewports) {
+            const locusString = referenceFrame.getLocusString();
+            locus.push(locusString);
+            if (referenceFrame.selection) {
+                const selection = {
+                    gene: referenceFrame.selection.gene,
+                    snp: referenceFrame.selection.snp
+                };
+                gtexSelections[locusString] = selection;
+                hasGtexSelections = true;
+            }
+        }
+        json["locus"] = locus.length === 1 ? locus[0] : locus;
+        if (hasGtexSelections) {
+            json["gtexSelections"] = gtexSelections;
+        }
+
+        json["roi"] = this.roiManager.toJSON();
+
+        const trackJson = [];
+        const errors = [];
+        for (let {track} of this.trackViews) {
+            try {
+                let config;
+                if (typeof track.getState === "function") {
+                    config = track.getState();
+                } else {
+                    config = track.config;
+                }
+
+                if (config) {
+                    // null backpointer to browser
+                    if (config.browser) {
+                        delete config.browser;
+                    }
+                    config.order = track.order; //order++;
+                    trackJson.push(config);
+                }
+            } catch (e) {
+                console.error(`Track: ${track.name}: ${e}`);
+                errors.push(`Track: ${track.name}: ${e}`);
+            }
+        }
+
+        if (errors.length > 0) {
+            let n = 1;
+            let message = 'Errors encountered saving session: </br>';
+            for (let e of errors) {
+                message += ` (${n++}) ${e.toString()} <br/>`;
+            }
+            throw Error(message)
+        }
+
+
+        json["tracks"] = trackJson;
+
+        return json        // This is an object, not a json string
+
+    }
+
+    compressedSession() {
+        const json = JSON.stringify(this.toJSON());
+        return compressString(json)
+    }
+
+    sessionURL() {
+        const path = window.location.href.slice();
+        const idx = path.indexOf("?");
+        const surl = (idx > 0 ? path.substring(0, idx) : path) + "?sessionURL=blob:" + this.compressedSession();
+        return surl
+    }
+
+    /**
+     * Record a mouse click on a specific viewport.   This might be the start of a drag operation.   Dragging
+     * (panning) is handled here so that the mouse can move out of a specific viewport (e.g. stray into another
+     * track) without halting the drag.
+     *
+     * @param e
+     * @param viewport
+     */
+    mouseDownOnViewport(e, viewport) {
+
+        var coords;
+        coords = domUtils.pageCoordinates(e);
+        this.vpMouseDown = {
+            viewport,
+            lastMouseX: coords.x,
+            mouseDownX: coords.x,
+            lastMouseY: coords.y,
+            mouseDownY: coords.y,
+            referenceFrame: viewport.referenceFrame
+        };
+    };
+
+    cancelTrackPan() {
+
+        const dragObject = this.dragObject;
+        this.dragObject = undefined;
+        this.isScrolling = false;
+        this.vpMouseDown = undefined;
+
+        if (dragObject && dragObject.viewport.referenceFrame.start !== dragObject.start) {
+            this.updateViews();
+            this.fireEvent('trackdragend');
+        }
+    }
+
+    isTrackPanning() {
+        return this.dragObject
+    }
+
+    isSoftclipped() {
+        const result = this.trackViews.find(tv => tv.track.showSoftClips === true);
+        return result !== undefined
+    }
+
+
+    /**
+     * Track drag here refers to vertical dragging to reorder tracks, not horizontal panning.
+     *
+     * @param trackView
+     */
+    startTrackDrag(trackView) {
+
+        this.dragTrack = trackView;
+
+    }
+
+    /**
+     * Track drag here refers to vertical dragging to reorder tracks, not horizontal panning.
+     *
+     * @param dragDestination
+     */
+    updateTrackDrag(dragDestination) {
+
+        if (dragDestination && this.dragTrack) {
+
+            const dragged = this.dragTrack;
+            const indexDestination = this.trackViews.indexOf(dragDestination);
+            const indexDragged = this.trackViews.indexOf(dragged);
+            const trackViews = this.trackViews;
+
+            trackViews[indexDestination] = dragged;
+            trackViews[indexDragged] = dragDestination;
+
+            const newOrder = this.trackViews[indexDestination].track.order;
+            this.trackViews[indexDragged].track.order = newOrder;
+
+            const nTracks = trackViews.length;
+            let lastOrder = newOrder;
+
+            if (indexDestination < indexDragged) {
+                // Displace tracks below
+
+                for (let i = indexDestination + 1; i < nTracks; i++) {
+                    const track = trackViews[i].track;
+                    if (track.order <= lastOrder) {
+                        track.order = Math.min(Number.MAX_SAFE_INTEGER, lastOrder + 1);
+                        lastOrder = track.order;
+                    } else {
+                        break
+                    }
+                }
+            } else {
+                // Displace tracks above.  First track (index 0) is "ruler"
+                for (let i = indexDestination - 1; i > 0; i--) {
+                    const track = trackViews[i].track;
+                    if (track.order >= lastOrder) {
+                        track.order = Math.max(-Number.MAX_SAFE_INTEGER, lastOrder - 1);
+                        lastOrder = track.order;
+                    } else {
+                        break
+                    }
+                }
+            }
+            this.reorderTracks();
+        }
+    }
+
+    /**
+     * End vertical dragging of tracks (i.e. track re-order, not horizontal panning of data)
+     */
+    endTrackDrag() {
+        if (this.dragTrack) {
+            // this.dragTrack.$trackDragScrim.hide();
+            this.dragTrack = undefined;
+            this.fireEvent('trackorderchanged', [this.getTrackOrder()]);
+        } else {
+            this.dragTrack = undefined;
+        }
+    }
+
+    /**
+     * Mouse handlers to support drag (pan)
+     */
+    addMouseHandlers() {
+        this.addWindowResizeHandler();
+        this.addRootMouseUpHandler();
+        this.addRootMouseLeaveHandler();
+        this.addColumnContainerEventHandlers();
+    }
+
+    removeMouseHandlers() {
+        this.removeWindowResizeHandler();
+        this.removeRootMouseUpHandler();
+        this.removeRootMouseLeaveHandler();
+        this.removeColumnContainerEventHandlers();
+    }
+
+    addWindowResizeHandler() {
+        // Create a copy of the prototype "resize" function bound to this instance.  Neccessary to support removing.
+        this.boundWindowResizeHandler = resize.bind(this);
+        window.addEventListener('resize', this.boundWindowResizeHandler);
+    }
+
+    removeWindowResizeHandler() {
+        window.removeEventListener('resize', this.boundWindowResizeHandler);
+    }
+
+    addRootMouseUpHandler() {
+        this.boundRootMouseUpHandler = mouseUpOrLeave.bind(this);
+        this.root.addEventListener('mouseup', this.boundRootMouseUpHandler);
+    }
+
+    removeRootMouseUpHandler() {
+        this.root.removeEventListener('mouseup', this.boundRootMouseUpHandler);
+    }
+
+    addRootMouseLeaveHandler() {
+        this.boundRootMouseLeaveHandler = mouseUpOrLeave.bind(this);
+        this.root.addEventListener('mouseleave', this.boundRootMouseLeaveHandler);
+    }
+
+    removeRootMouseLeaveHandler() {
+        this.root.removeEventListener('mouseleave', this.boundRootMouseLeaveHandler);
+    }
+
+    addColumnContainerEventHandlers() {
+        this.boundColumnContainerMouseMoveHandler = handleMouseMove.bind(this);
+        this.boundColumnContainerTouchMoveHandler = handleMouseMove.bind(this);
+        this.boundColumnContainerMouseLeaveHandler = mouseUpOrLeave.bind(this);
+        this.boundColumnContainerMouseUpHandler = mouseUpOrLeave.bind(this);
+        this.boundColumnContainerTouchEndHandler = mouseUpOrLeave.bind(this);
+
+        this.columnContainer.addEventListener('mousemove', this.boundColumnContainerMouseMoveHandler);
+        this.columnContainer.addEventListener('touchmove', this.boundColumnContainerTouchMoveHandler);
+
+        this.columnContainer.addEventListener('mouseleave', this.boundColumnContainerMouseLeaveHandler);
+
+        this.columnContainer.addEventListener('mouseup', this.boundColumnContainerMouseUpHandler);
+        this.columnContainer.addEventListener('touchend', this.boundColumnContainerTouchEndHandler);
+    }
+
+    removeColumnContainerEventHandlers() {
+        this.columnContainer.removeEventListener('mousemove', this.boundColumnContainerMouseMoveHandler);
+        this.columnContainer.removeEventListener('touchmove', this.boundColumnContainerTouchMoveHandler);
+
+        this.columnContainer.removeEventListener('mouseleave', this.boundColumnContainerMouseLeaveHandler);
+
+        this.columnContainer.removeEventListener('mouseup', this.boundColumnContainerMouseUpHandler);
+        this.columnContainer.removeEventListener('touchend', this.boundColumnContainerTouchEndHandler);
+    }
+
+    static uncompressSession(url) {
+
+        let bytes;
+        if (url.indexOf('/gzip;base64') > 0) {
+            //Proper dataURI
+            bytes = decodeDataURI$1(url);
+            let json = '';
+            for (let b of bytes) {
+                json += String.fromCharCode(b);
+            }
+            return json
+        } else {
+
+            let enc = url.substring(5);
+            return uncompressString(enc)
+        }
+    }
+
+    createCircularView(container, show) {
+        show = show === true;   // convert undefined to boolean
+        this.circularView = createCircularView(container, this);
+        this.circularViewControl = new CircularViewControl(this.$toggle_button_container.get(0), this);
+        this.circularView.setAssembly({
+            name: this.genome.id,
+            id: this.genome.id,
+            chromosomes: makeCircViewChromosomes(this.genome)
+        });
+        this.circularViewVisible = show;
+        return this.circularView
+    }
+
+    get circularViewVisible() {
+        return this.circularView !== undefined && this.circularView.visible
+    }
+
+    set circularViewVisible(isVisible) {
+        if (this.circularView) {
+            this.circularView.visible = isVisible;
+            this.circularViewControl.setState(isVisible);
+        }
+    }
+}
+
+/**
+ * Function called win window is resized, or visibility changed (e.g. "show" from a tab).  This is a function rather
+ * than class method because it needs to be copied and bound to specific instances of browser to support listener
+ * removal
+ *
+ * @returns {Promise<void>}
+ */
+async function resize() {
+
+    if(!this.referenceFrameList) return
+
+    const viewportWidth = this.calculateViewportWidth(this.referenceFrameList.length);
+
+    for (let referenceFrame of this.referenceFrameList) {
+
+        const index = this.referenceFrameList.indexOf(referenceFrame);
+
+        const {chr, genome} = referenceFrame;
+
+        const {bpLength} = genome.getChromosome(referenceFrame.chr);
+
+        const viewportWidthBP = referenceFrame.toBP(viewportWidth);
+
+        // viewportWidthBP > bpLength occurs when locus is full chromosome and user widens browser
+        if (GenomeUtils.isWholeGenomeView(chr) || viewportWidthBP > bpLength) {
+            // console.log(`${ Date.now() } Recalc referenceFrame(${ index }) bpp. viewport ${ StringUtils.numberFormatter(viewportWidthBP) } > ${ StringUtils.numberFormatter(bpLength) }.`)
+            referenceFrame.bpPerPixel = bpLength / viewportWidth;
+        } else {
+            // console.log(`${ Date.now() } Recalc referenceFrame(${ index }) end.`)
+            referenceFrame.end = referenceFrame.start + referenceFrame.toBP(viewportWidth);
+        }
+
+        for (let {viewports} of this.trackViews) {
+            viewports[index].setWidth(viewportWidth);
+        }
+
+    }
+
+    this.updateUIWithReferenceFrameList();
+
+    //TODO -- update view only if needed.  Reducing size never needed.  Increasing size maybe
+
+    await this.updateViews(true);
+}
+
+
+function handleMouseMove(e) {
+
+    e.preventDefault();
+
+    const {x, y} = domUtils.pageCoordinates(e);
+
+    if (this.vpMouseDown) {
+
+        const {viewport, referenceFrame} = this.vpMouseDown;
+
+        // Determine direction,  true == horizontal
+        const horizontal = Math.abs((x - this.vpMouseDown.mouseDownX)) > Math.abs((y - this.vpMouseDown.mouseDownY));
+
+        if (!this.dragObject && !this.isScrolling) {
+            if (horizontal) {
+                if (this.vpMouseDown.mouseDownX && Math.abs(x - this.vpMouseDown.mouseDownX) > this.constants.dragThreshold) {
+                    this.dragObject = {viewport, start: referenceFrame.start};
+                }
+            } else {
+                if (this.vpMouseDown.mouseDownY &&
+                    Math.abs(y - this.vpMouseDown.mouseDownY) > this.constants.scrollThreshold) {
+                    // Scrolling => dragging track vertically
+                    this.isScrolling = true;
+                    const viewportHeight = viewport.$viewport.height();
+                    const contentHeight = viewport.trackView.maxViewportContentHeight();
+                    this.vpMouseDown.r = viewportHeight / contentHeight;
+                }
+            }
+        }
+
+        if (this.dragObject) {
+            const clampDrag = !this.isSoftclipped();
+            let deltaX = this.vpMouseDown.lastMouseX - x;
+            const viewChanged = referenceFrame.shiftPixels(deltaX, viewport.$viewport.width(), clampDrag);
+            if (viewChanged) {
+                this.updateViews();
+            }
+            this.fireEvent('trackdrag');
+        }
+
+
+        if (this.isScrolling) {
+            const delta = this.vpMouseDown.r * (this.vpMouseDown.lastMouseY - y);
+            viewport.trackView.moveScroller(delta);
+        }
+
+
+        this.vpMouseDown.lastMouseX = x;
+        this.vpMouseDown.lastMouseY = y;
+    }
+}
+
+function mouseUpOrLeave(e) {
+    this.cancelTrackPan();
+    this.endTrackDrag();
+}
+
+
+function getInitialLocus(locus, genome) {
+    if (locus) {
+        return Array.isArray(locus) ? locus.join(' ') : locus
+    } else {
+        return genome.getHomeChromosomeName()
+    }
+}
+
+function logo() {
+
+    return $$1(
+        '<svg width="690px" height="324px" viewBox="0 0 690 324" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">' +
+        '<title>IGV</title>' +
+        '<g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">' +
+        '<g id="IGV" fill="#666666">' +
+        '<polygon id="Path" points="379.54574 8.00169252 455.581247 8.00169252 515.564813 188.87244 532.884012 253.529506 537.108207 253.529506 554.849825 188.87244 614.833392 8.00169252 689.60164 8.00169252 582.729511 320.722144 486.840288 320.722144"></polygon>' +
+        '<path d="M261.482414,323.793286 C207.975678,323.793286 168.339046,310.552102 142.571329,284.069337 C116.803612,257.586572 103.919946,217.158702 103.919946,162.784513 C103.919946,108.410325 117.437235,67.8415913 144.472217,41.0770945 C171.507199,14.3125977 212.903894,0.930550071 268.663545,0.930550071 C283.025879,0.930550071 298.232828,1.84616386 314.284849,3.6774189 C330.33687,5.50867394 344.839793,7.97378798 357.794056,11.072835 L357.794056,68.968378 C339.48912,65.869331 323.578145,63.5450806 310.060654,61.9955571 C296.543163,60.4460336 284.574731,59.6712835 274.154998,59.6712835 C255.850062,59.6712835 240.502308,61.4320792 228.111274,64.9537236 C215.720241,68.4753679 205.793482,74.2507779 198.330701,82.2801269 C190.867919,90.309476 185.587729,100.87425 182.48997,113.974767 C179.392212,127.075284 177.843356,143.345037 177.843356,162.784513 C177.843356,181.942258 179.251407,198.000716 182.067551,210.960367 C184.883695,223.920018 189.671068,234.41436 196.429813,242.443709 C203.188559,250.473058 212.059279,256.178037 223.042241,259.558815 C234.025202,262.939594 247.683295,264.629958 264.01693,264.629958 C268.241146,264.629958 273.098922,264.489094 278.590403,264.207362 C284.081883,263.925631 289.643684,263.50304 295.275972,262.939577 L295.275972,159.826347 L361.595831,159.826347 L361.595831,308.579859 C344.698967,313.087564 327.239137,316.750019 309.215815,319.567334 C291.192494,322.38465 275.281519,323.793286 261.482414,323.793286 L261.482414,323.793286 L261.482414,323.793286 Z" id="Path"></path>;' +
+        '<polygon id="Path" points="0.81355666 5.00169252 73.0472883 5.00169252 73.0472883 317.722144 0.81355666 317.722144"></polygon>' +
+        '</g> </g> </svg>'
+    )
+}
+
+function toggleTrackLabels(trackViews, isVisible) {
+
+    for (let {viewports} of trackViews) {
+        for (let viewport of viewports) {
+            if (viewport.$trackLabel) {
+                if (0 === viewports.indexOf(viewport) && true === isVisible) {
+                    viewport.$trackLabel.show();
+                } else {
+                    viewport.$trackLabel.hide();
+                }
+            }
+        }
+    }
+}
+
+/*
+ * The MIT License (MIT)
+ *
+ * Copyright (c) 2014 Broad Institute
+ *
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+let allBrowsers = [];
+
+/**
+ * Create an igv.browser instance.  This object defines the public API for interacting with the genome browser.
+ *
+ * @param parentDiv - DOM tree root
+ * @param config - configuration options.
+ *
+ */
+async function createBrowser(parentDiv, config) {
+
+    if (undefined === config) config = {};
+
+    // Initialize pre-defined genomes.  The genome list is shared among all browser instances
+    if (!GenomeUtils.KNOWN_GENOMES) {
+        await GenomeUtils.initializeGenomes(config);
+    }
+
+    setDefaults(config);
+
+    if (config.queryParametersSupported) {
+        extractQuery(config);
+    }
+    if (config.apiKey) {
+        igvxhr.setApiKey(config.apiKey);
+    }
+    if (config.oauthToken) {
+        igvxhr.setOauthToken(config.oauthToken);
+    }
+    if (config.clientId && (!isInitialized())) {
+        await init$1({
+            clientId: config.clientId,
+            apiKey: config.apiKey,
+            scope: 'https://www.googleapis.com/auth/userinfo.profile'
+        });
+    }
+
+    // Create browser
+    const browser = new Browser(config, parentDiv);
+    allBrowsers.push(browser);
+
+    // Load initial session
+    if (config.sessionURL) {
+        await browser.loadSession({
+            url: config.sessionURL
+        });
+    } else {
+        await browser.loadSessionObject(config);
+    }
+
+    browser.navbarManager.navbarDidResize(browser.$navigation.width());
+
+    return browser
+
+}
+
+function removeBrowser(browser) {
+    browser.dispose();
+    browser.root.remove();
+    allBrowsers = allBrowsers.filter(item => item !== browser);
+}
+
+function removeAllBrowsers() {
+    for (let browser of allBrowsers) {
+        browser.dispose();
+        browser.root.remove();
+    }
+    allBrowsers = [];
+}
+
+/**
+ * This function provided so clients can inform igv of a visibility change, typically when an igv instance is
+ * made visible from a tab, accordion, or similar widget.
+ */
+async function visibilityChange() {
+    for (let browser of allBrowsers) {
+        await browser.visibilityChange();
+    }
+}
+
+function setDefaults(config) {
+
+    if (undefined === config.minimumBases) {
+        config.minimumBases = 40;
+    }
+
+    if (undefined === config.showIdeogram) {
+        config.showIdeogram = true;
+    }
+
+    if (undefined === config.showCircularView) {
+        config.showCircularView = false;
+    }
+
+    if (undefined === config.showCircularViewButton) {
+        config.showCircularViewButton = false;
+    }
+
+    if (undefined === config.showTrackLabelButton) {
+        config.showTrackLabelButton = true;
+    }
+
+    if (undefined === config.showTrackLabels) {
+        config.showTrackLabels = true;
+    }
+
+    if (undefined === config.showROITableButton) {
+        config.showROITableButton = false;
+    }
+
+    if (undefined === config.showROITable) {
+        config.showROITable = false;
+    }
+
+    if (undefined === config.showCursorTrackingGuideButton) {
+        config.showCursorTrackingGuideButton = true;
+    }
+
+
+    if (undefined === config.showCursorGuide) {
+        config.showCursorGuide = config.showCursorTrackingGuide || false;   // showCursorTrackingGuide is a synonym
+    }
+
+    if (undefined === config.showCenterGuideButton) {
+        config.showCenterGuideButton = true;
+    }
+
+    if (undefined === config.showCenterGuide) {
+        config.showCenterGuide = false;
+    }
+
+    if (undefined === config.showSampleNames) {
+        config.showSampleNames = false;
+    }
+
+    if (undefined === config.showSVGButton) {
+        config.showSVGButton = true;
+    }
+
+    if (config.showControls === undefined) {
+        config.showControls = true;
+    }
+
+    if (config.showNavigation === undefined) {
+        config.showNavigation = true;
+    }
+
+    if (config.showRuler === undefined) {
+        config.showRuler = true;
+    }
+
+    if (config.flanking === undefined) {
+        config.flanking = 1000;
+    }
+
+    if (config.pairsSupported === undefined) {
+        config.pairsSupported = true;
+    }
+
+    if (!config.tracks) {
+        config.tracks = [];
+    }
+
+}
+
+
+function extractQuery(config) {
+
+    var i1, i2, i, j, s, query, tokens, uri, key, value;
+
+    uri = window.location.href;
+
+    query = {};
+    i1 = uri.indexOf("?");
+    i2 = uri.lastIndexOf("#");
+
+    let files;
+    let indexURLs;
+    let names;
+    if (i1 >= 0) {
+        if (i2 < 0) i2 = uri.length;
+        for (i = i1 + 1; i < i2;) {
+            j = uri.indexOf("&", i);
+            if (j < 0) j = i2;
+
+            s = uri.substring(i, j);
+            tokens = s.split("=", 2);
+
+            if (tokens.length === 2) {
+                key = tokens[0];
+                value = decodeURIComponent(tokens[1]);
+
+                if ('file' === key) {
+                    // IGV desktop style file parameter
+                    files = value.split(',');
+                } else if ('index' === key) {
+                    // IGV desktop style index parameter
+                    indexURLs = value.split(',');
+                } else if ('name' === key) {
+                    // IGV desktop style index parameter
+                    names = value.split(',');
+                } else if ('genome' === key && ((value.startsWith("https://") || value.startsWith("http://")) && !value.endsWith(".json"))) {
+                    // IGV desktop compatibility -- assuming url to fasta
+                    config['reference'] = {
+                        fastaURL: value,
+                        indexURL: value + ".fai"
+                    };
+                } else {
+                    config[key] = value;
+                }
+                i = j + 1;
+            } else {
+                i++;
+            }
+        }
+    }
+
+    if (files) {
+
+        if (!config.tracks)
+            config.tracks = [];
+        for (let i = 0; i < files.length; i++) {
+
+            if (files[i].endsWith(".xml") || files[i].endsWith(".json")) {
+                config.sessionURL = files[i];
+                break
+            }
+
+            const trackConfig = {url: files[i]};
+            if (indexURLs && indexURLs.length > i) {
+                trackConfig.indexURL = indexURLs[i];
+            }
+            if (names && names.length > i) {
+                trackConfig.name = names[i];
+            }
+            config.tracks.push(trackConfig);
+        }
+    }
+
+    return query
+}
+
+
+async function createTrack(config, browser) {
+    return await Browser.prototype.createTrack.call(browser, config)
+}
+
+function embedCSS() {
+
+    var css = '.igv-navbar {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  box-sizing: border-box;\n  width: 100%;\n  color: #444;\n  font-size: 12px;\n  font-family: \"Open Sans\", sans-serif;\n  font-weight: 400;\n  line-height: 32px;\n  padding-left: 8px;\n  padding-right: 8px;\n  margin-top: 2px;\n  margin-bottom: 6px;\n  height: 32px;\n  border-style: solid;\n  border-radius: 3px;\n  border-width: thin;\n  border-color: #bfbfbf;\n  background-color: #f3f3f3;\n}\n.igv-navbar .igv-navbar-left-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  height: 32px;\n  line-height: 32px;\n}\n.igv-navbar .igv-navbar-left-container .igv-logo {\n  width: 34px;\n  height: 32px;\n  margin-right: 8px;\n}\n.igv-navbar .igv-navbar-left-container .igv-current-genome {\n  height: 32px;\n  margin-left: 4px;\n  margin-right: 4px;\n  user-select: none;\n  line-height: 32px;\n  vertical-align: middle;\n  text-align: center;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  height: 100%;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-chromosome-select-widget-container {\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n  height: 100%;\n  width: 125px;\n  margin-right: 4px;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-chromosome-select-widget-container select {\n  display: block;\n  cursor: pointer;\n  width: 100px;\n  height: 75%;\n  outline: none;\n  font-size: 12px;\n  font-family: \"Open Sans\", sans-serif;\n  font-weight: 400;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  margin-left: 8px;\n  height: 22px;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n  width: 210px;\n  height: 22px;\n  line-height: 22px;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container input.igv-search-input {\n  cursor: text;\n  width: 85%;\n  height: 22px;\n  line-height: 22px;\n  font-size: 12px;\n  font-family: \"Open Sans\", sans-serif;\n  font-weight: 400;\n  text-align: left;\n  padding-left: 8px;\n  margin-right: 8px;\n  outline: none;\n  border-style: solid;\n  border-radius: 3px;\n  border-width: thin;\n  border-color: #bfbfbf;\n  background-color: white;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container .igv-search-icon-container {\n  cursor: pointer;\n  height: 16px;\n  width: 16px;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-windowsize-panel-container {\n  margin-left: 4px;\n  user-select: none;\n}\n.igv-navbar .igv-navbar-right-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  height: 32px;\n  line-height: 32px;\n}\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  height: 100%;\n}\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container div {\n  margin-left: 0;\n  margin-right: 4px;\n}\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container div:last-child {\n  margin-left: 0;\n  margin-right: 0;\n}\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container-750 {\n  display: none;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget {\n  color: #737373;\n  font-size: 18px;\n  height: 32px;\n  line-height: 32px;\n  margin-left: 8px;\n  user-select: none;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div {\n  cursor: pointer;\n  margin-left: unset;\n  margin-right: unset;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:first-child {\n  height: 24px;\n  width: 24px;\n  margin-left: unset;\n  margin-right: 8px;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:last-child {\n  height: 24px;\n  width: 24px;\n  margin-left: 8px;\n  margin-right: unset;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:nth-child(even) {\n  display: block;\n  height: fit-content;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget input {\n  display: block;\n  width: 125px;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget svg {\n  display: block;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 {\n  color: #737373;\n  font-size: 18px;\n  height: 32px;\n  line-height: 32px;\n  margin-left: 8px;\n  user-select: none;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div {\n  cursor: pointer;\n  margin-left: unset;\n  margin-right: unset;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:first-child {\n  height: 24px;\n  width: 24px;\n  margin-left: unset;\n  margin-right: 8px;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:last-child {\n  height: 24px;\n  width: 24px;\n  margin-left: 8px;\n  margin-right: unset;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:nth-child(even) {\n  width: 0;\n  height: 0;\n  display: none;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 input {\n  width: 0;\n  height: 0;\n  display: none;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 svg {\n  display: block;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-hidden {\n  display: none;\n}\n\n.igv-navbar-button {\n  display: block;\n  box-sizing: unset;\n  padding-left: 6px;\n  padding-right: 6px;\n  height: 18px;\n  text-transform: capitalize;\n  user-select: none;\n  line-height: 18px;\n  text-align: center;\n  vertical-align: middle;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 11px;\n  font-weight: 200;\n  color: #737373;\n  background-color: #f3f3f3;\n  border-color: #737373;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 6px;\n}\n\n.igv-navbar-button-clicked {\n  color: white;\n  background-color: #737373;\n}\n\n.igv-navbar-button:hover {\n  cursor: pointer;\n}\n\n.igv-zoom-in-notice-container {\n  z-index: 1024;\n  position: absolute;\n  top: 8px;\n  left: 50%;\n  transform: translate(-50%, 0%);\n  display: flex;\n  flex-direction: row;\n  flex-wrap: nowrap;\n  justify-content: center;\n  align-items: center;\n  background-color: white;\n}\n.igv-zoom-in-notice-container > div {\n  padding-left: 4px;\n  padding-right: 4px;\n  padding-top: 2px;\n  padding-bottom: 2px;\n  width: 100%;\n  height: 100%;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  color: #3f3f3f;\n}\n\n.igv-zoom-in-notice {\n  position: absolute;\n  top: 10px;\n  left: 50%;\n}\n.igv-zoom-in-notice div {\n  position: relative;\n  left: -50%;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  color: #3f3f3f;\n  background-color: rgba(255, 255, 255, 0.51);\n  z-index: 64;\n}\n\n.igv-container-spinner {\n  position: absolute;\n  top: 90%;\n  left: 50%;\n  transform: translate(-50%, -50%);\n  z-index: 1024;\n  width: 24px;\n  height: 24px;\n  pointer-events: none;\n  color: #737373;\n}\n\n.igv-multi-locus-close-button {\n  position: absolute;\n  top: 2px;\n  right: 0;\n  padding-left: 2px;\n  padding-right: 2px;\n  width: 12px;\n  height: 12px;\n  color: #666666;\n  background-color: white;\n  z-index: 1000;\n}\n.igv-multi-locus-close-button > svg {\n  vertical-align: top;\n}\n\n.igv-multi-locus-close-button:hover {\n  cursor: pointer;\n  color: #434343;\n}\n\n.igv-multi-locus-ruler-label {\n  z-index: 64;\n  position: absolute;\n  top: 2px;\n  left: 0;\n  width: 100%;\n  height: 12px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: center;\n  align-items: center;\n}\n.igv-multi-locus-ruler-label > div {\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 12px;\n  color: rgb(16, 16, 16);\n  background-color: white;\n}\n.igv-multi-locus-ruler-label > div {\n  cursor: pointer;\n}\n\n.igv-multi-locus-ruler-label-square-dot {\n  z-index: 64;\n  position: absolute;\n  left: 50%;\n  top: 5%;\n  transform: translate(-50%, 0%);\n  background-color: white;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-multi-locus-ruler-label-square-dot > div:first-child {\n  width: 14px;\n  height: 14px;\n}\n.igv-multi-locus-ruler-label-square-dot > div:last-child {\n  margin-left: 16px;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  color: rgb(16, 16, 16);\n}\n\n.igv-ruler-sweeper {\n  display: none;\n  pointer-events: none;\n  position: absolute;\n  top: 26px;\n  bottom: 0;\n  left: 0;\n  width: 0;\n  z-index: 99999;\n  background-color: rgba(68, 134, 247, 0.25);\n}\n\n.igv-ruler-tooltip {\n  pointer-events: none;\n  z-index: 128;\n  position: absolute;\n  top: 0;\n  left: 0;\n  width: 1px;\n  height: 32px;\n  background-color: transparent;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-ruler-tooltip > div {\n  pointer-events: none;\n  width: 128px;\n  height: auto;\n  padding: 1px;\n  color: #373737;\n  font-size: 10px;\n  font-family: \"Open Sans\", sans-serif;\n  font-weight: 400;\n  background-color: white;\n  border-style: solid;\n  border-width: thin;\n  border-color: #373737;\n}\n\n.igv-track-label {\n  position: absolute;\n  left: 8px;\n  top: 8px;\n  width: auto;\n  height: auto;\n  max-width: 50%;\n  padding-left: 4px;\n  padding-right: 4px;\n  white-space: nowrap;\n  overflow: hidden;\n  text-overflow: ellipsis;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: small;\n  font-weight: 400;\n  text-align: center;\n  user-select: none;\n  -moz-user-select: none;\n  -webkit-user-select: none;\n  border-color: #444;\n  border-radius: 2px;\n  border-style: solid;\n  border-width: thin;\n  background-color: white;\n  z-index: 128;\n  cursor: pointer;\n}\n\n.igv-track-label:hover,\n.igv-track-label:focus,\n.igv-track-label:active {\n  background-color: #e8e8e8;\n}\n\n.igv-track-label-popup-shim {\n  padding-left: 8px;\n  padding-right: 8px;\n  padding-top: 4px;\n}\n\n.igv-center-line {\n  display: none;\n  pointer-events: none;\n  position: absolute;\n  top: 0;\n  bottom: 0;\n  left: 50%;\n  transform: translateX(-50%);\n  z-index: 8;\n  user-select: none;\n  -moz-user-select: none;\n  -webkit-user-select: none;\n  border-left-style: dashed;\n  border-left-width: thin;\n  border-right-style: dashed;\n  border-right-width: thin;\n}\n\n.igv-center-line-wide {\n  background-color: rgba(0, 0, 0, 0);\n  border-left-color: rgba(127, 127, 127, 0.51);\n  border-right-color: rgba(127, 127, 127, 0.51);\n}\n\n.igv-center-line-thin {\n  background-color: rgba(0, 0, 0, 0);\n  border-left-color: rgba(127, 127, 127, 0.51);\n  border-right-color: rgba(0, 0, 0, 0);\n}\n\n.igv-cursor-guide-horizontal {\n  display: none;\n  pointer-events: none;\n  user-select: none;\n  -moz-user-select: none;\n  -webkit-user-select: none;\n  position: absolute;\n  left: 0;\n  right: 0;\n  top: 50%;\n  height: 1px;\n  z-index: 1;\n  margin-left: 50px;\n  margin-right: 54px;\n  border-top-style: dotted;\n  border-top-width: thin;\n  border-top-color: rgba(127, 127, 127, 0.76);\n}\n\n.igv-cursor-guide-vertical {\n  pointer-events: none;\n  user-select: none;\n  -moz-user-select: none;\n  -webkit-user-select: none;\n  position: absolute;\n  top: 0;\n  bottom: 0;\n  left: 50%;\n  width: 1px;\n  z-index: 1;\n  border-left-style: dotted;\n  border-left-width: thin;\n  border-left-color: rgba(127, 127, 127, 0.76);\n  display: none;\n}\n\n.igv-user-feedback {\n  position: fixed;\n  top: 50%;\n  left: 50%;\n  transform: translate(-50%, -50%);\n  width: 512px;\n  height: 360px;\n  z-index: 2048;\n  background-color: white;\n  border-color: #a2a2a2;\n  border-style: solid;\n  border-width: thin;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  color: #444;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-user-feedback div:first-child {\n  position: relative;\n  height: 24px;\n  width: 100%;\n  background-color: white;\n  border-bottom-color: #a2a2a2;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-user-feedback div:first-child div {\n  position: absolute;\n  top: 2px;\n  width: 16px;\n  height: 16px;\n  background-color: transparent;\n}\n.igv-user-feedback div:first-child div:first-child {\n  left: 8px;\n}\n.igv-user-feedback div:first-child div:last-child {\n  cursor: pointer;\n  right: 8px;\n}\n.igv-user-feedback div:last-child {\n  width: 100%;\n  height: calc(100% - 24px);\n  border-width: 0;\n}\n.igv-user-feedback div:last-child div {\n  width: auto;\n  height: auto;\n  margin: 8px;\n}\n\n.igv-generic-dialog-container {\n  position: absolute;\n  top: 0;\n  left: 0;\n  width: 300px;\n  height: 200px;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  z-index: 2048;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-header {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-generic-dialog-container .igv-generic-dialog-header div {\n  margin-right: 4px;\n  margin-bottom: 2px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-generic-dialog-container .igv-generic-dialog-header div:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-generic-dialog-container .igv-generic-dialog-one-liner {\n  color: #373737;\n  width: 95%;\n  height: 24px;\n  line-height: 24px;\n  text-align: left;\n  margin-top: 8px;\n  padding-left: 8px;\n  overflow-wrap: break-word;\n  background-color: white;\n}\n.igv-generic-dialog-container .igv-generic-dialog-label-input {\n  margin-top: 8px;\n  width: 95%;\n  height: 24px;\n  color: #373737;\n  line-height: 24px;\n  padding-left: 8px;\n  background-color: white;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-label-input div {\n  width: 30%;\n  height: 100%;\n  font-size: 16px;\n  text-align: right;\n  padding-right: 8px;\n  background-color: white;\n}\n.igv-generic-dialog-container .igv-generic-dialog-label-input input {\n  display: block;\n  height: 100%;\n  width: 100%;\n  padding-left: 4px;\n  font-family: \"Open Sans\", sans-serif;\n  font-weight: 400;\n  color: #373737;\n  text-align: left;\n  outline: none;\n  border-style: solid;\n  border-width: thin;\n  border-color: #7F7F7F;\n  background-color: white;\n}\n.igv-generic-dialog-container .igv-generic-dialog-label-input input {\n  width: 50%;\n  font-size: 16px;\n}\n.igv-generic-dialog-container .igv-generic-dialog-input {\n  margin-top: 8px;\n  width: calc(100% - 16px);\n  height: 24px;\n  color: #373737;\n  line-height: 24px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-input input {\n  display: block;\n  height: 100%;\n  width: 100%;\n  padding-left: 4px;\n  font-family: \"Open Sans\", sans-serif;\n  font-weight: 400;\n  color: #373737;\n  text-align: left;\n  outline: none;\n  border-style: solid;\n  border-width: thin;\n  border-color: #7F7F7F;\n  background-color: white;\n}\n.igv-generic-dialog-container .igv-generic-dialog-input input {\n  font-size: 16px;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel {\n  width: 100%;\n  height: 28px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div {\n  margin-top: 32px;\n  color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  width: 75px;\n  height: 28px;\n  line-height: 28px;\n  text-align: center;\n  border-color: transparent;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 2px;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:first-child {\n  margin-left: 32px;\n  margin-right: 0;\n  background-color: #5ea4e0;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:last-child {\n  margin-left: 0;\n  margin-right: 32px;\n  background-color: #c4c4c4;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:first-child:hover {\n  cursor: pointer;\n  background-color: #3b5c7f;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:last-child:hover {\n  cursor: pointer;\n  background-color: #7f7f7f;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok {\n  width: 100%;\n  height: 36px;\n  margin-top: 32px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok div {\n  width: 98px;\n  height: 36px;\n  line-height: 36px;\n  text-align: center;\n  color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  border-color: white;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 4px;\n  background-color: #2B81AF;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok div:hover {\n  cursor: pointer;\n  background-color: #25597f;\n}\n\n.igv-generic-container {\n  position: absolute;\n  top: 0;\n  left: 0;\n  z-index: 2048;\n  background-color: white;\n  cursor: pointer;\n  display: flex;\n  flex-direction: row;\n  flex-wrap: wrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-generic-container div:first-child {\n  cursor: move;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  height: 24px;\n  width: 100%;\n  background-color: #dddddd;\n}\n.igv-generic-container div:first-child i {\n  display: block;\n  color: #5f5f5f;\n  cursor: pointer;\n  width: 14px;\n  height: 14px;\n  margin-right: 8px;\n  margin-bottom: 4px;\n}\n\n.igv-menu-popup {\n  position: absolute;\n  top: 0;\n  left: 0;\n  width: max-content;\n  z-index: 4096;\n  cursor: pointer;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: small;\n  font-weight: 400;\n  color: #4b4b4b;\n  background: white;\n  border-radius: 4px;\n  border-color: #7F7F7F;\n  border-style: solid;\n  border-width: thin;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-end;\n  text-align: left;\n}\n.igv-menu-popup > div:not(:first-child) {\n  width: 100%;\n}\n.igv-menu-popup > div:not(:first-child) > div {\n  background: white;\n}\n.igv-menu-popup > div:not(:first-child) > div.context-menu {\n  padding-left: 4px;\n  padding-right: 4px;\n}\n.igv-menu-popup > div:not(:first-child) > div:last-child {\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n  border-bottom-color: transparent;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-menu-popup > div:not(:first-child) > div:hover {\n  background: #efefef;\n}\n\n.igv-menu-popup-shim {\n  padding-left: 8px;\n  padding-right: 8px;\n  padding-bottom: 1px;\n  padding-top: 1px;\n}\n\n.igv-menu-popup-header {\n  position: relative;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-color: transparent;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n}\n.igv-menu-popup-header div {\n  margin-right: 4px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-menu-popup-header div:hover {\n  cursor: pointer;\n  color: #444;\n}\n\n.igv-menu-popup-check-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n  width: 100%;\n  height: 20px;\n  margin-right: 4px;\n  background-color: transparent;\n}\n.igv-menu-popup-check-container div {\n  padding-top: 2px;\n  padding-left: 8px;\n}\n.igv-menu-popup-check-container div:first-child {\n  position: relative;\n  width: 12px;\n  height: 12px;\n}\n.igv-menu-popup-check-container div:first-child svg {\n  position: absolute;\n  width: 12px;\n  height: 12px;\n}\n\n.igv-user-feedback {\n  position: fixed;\n  top: 50%;\n  left: 50%;\n  transform: translate(-50%, -50%);\n  width: 512px;\n  height: 360px;\n  z-index: 2048;\n  background-color: white;\n  border-color: #a2a2a2;\n  border-style: solid;\n  border-width: thin;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  color: #444;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-user-feedback div:first-child {\n  position: relative;\n  height: 24px;\n  width: 100%;\n  background-color: white;\n  border-bottom-color: #a2a2a2;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-user-feedback div:first-child div {\n  position: absolute;\n  top: 2px;\n  width: 16px;\n  height: 16px;\n  background-color: transparent;\n}\n.igv-user-feedback div:first-child div:first-child {\n  left: 8px;\n}\n.igv-user-feedback div:first-child div:last-child {\n  cursor: pointer;\n  right: 8px;\n}\n.igv-user-feedback div:last-child {\n  width: 100%;\n  height: calc(100% - 24px);\n  border-width: 0;\n}\n.igv-user-feedback div:last-child div {\n  width: auto;\n  height: auto;\n  margin: 8px;\n}\n\n.igv-loading-spinner-container {\n  z-index: 1024;\n  position: absolute;\n  top: 50%;\n  left: 50%;\n  transform: translate(-50%, -50%);\n  width: 32px;\n  height: 32px;\n  display: flex;\n  flex-direction: row;\n  flex-wrap: nowrap;\n  justify-content: center;\n  align-items: center;\n}\n.igv-loading-spinner-container > div {\n  box-sizing: border-box;\n  width: 100%;\n  height: 100%;\n  border-radius: 50%;\n  border: 4px solid rgba(128, 128, 128, 0.5);\n  border-top-color: rgb(255, 255, 255);\n  animation: spin 1s ease-in-out infinite;\n  -webkit-animation: spin 1s ease-in-out infinite;\n}\n\n@keyframes spin {\n  to {\n    -webkit-transform: rotate(360deg);\n    transform: rotate(360deg);\n  }\n}\n@-webkit-keyframes spin {\n  to {\n    -webkit-transform: rotate(360deg);\n    transform: rotate(360deg);\n  }\n}\n.igv-roi-menu-next-gen {\n  position: absolute;\n  z-index: 512;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: small;\n  font-weight: 400;\n  color: #4b4b4b;\n  background-color: white;\n  width: 192px;\n  border-radius: 4px;\n  border-color: #7F7F7F;\n  border-style: solid;\n  border-width: thin;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n}\n.igv-roi-menu-next-gen > div:first-child {\n  height: 24px;\n  border-top-color: transparent;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n}\n.igv-roi-menu-next-gen > div:first-child > div {\n  margin-right: 4px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-roi-menu-next-gen > div:first-child > div:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-roi-menu-next-gen > div:last-child {\n  background-color: white;\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n  border-bottom-color: transparent;\n  border-bottom-style: solid;\n  border-bottom-width: 0;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n  text-align: start;\n  vertical-align: middle;\n}\n.igv-roi-menu-next-gen > div:last-child > div {\n  height: 24px;\n  padding-left: 4px;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  border-bottom-color: #7f7f7f;\n}\n.igv-roi-menu-next-gen > div:last-child > div:not(:first-child):hover {\n  background-color: rgba(127, 127, 127, 0.1);\n}\n.igv-roi-menu-next-gen > div:last-child div:first-child {\n  font-style: italic;\n  text-align: center;\n  padding-right: 4px;\n  white-space: nowrap;\n  overflow: hidden;\n  text-overflow: ellipsis;\n}\n.igv-roi-menu-next-gen > div:last-child > div:last-child {\n  border-bottom-width: 0;\n  border-bottom-color: transparent;\n}\n\n.igv-roi-placeholder {\n  font-style: normal;\n  color: rgba(75, 75, 75, 0.6);\n}\n\n.igv-roi-table {\n  position: absolute;\n  z-index: 1024;\n  width: min-content;\n  max-width: 1600px;\n  border-color: #7f7f7f;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 12px;\n  font-weight: 400;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n  cursor: default;\n}\n.igv-roi-table > div {\n  height: 24px;\n  font-size: 14px;\n  text-align: start;\n  vertical-align: middle;\n  line-height: 24px;\n}\n.igv-roi-table > div:first-child {\n  border-color: transparent;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-top-width: 0;\n  border-bottom-color: #7f7f7f;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n  cursor: move;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n}\n.igv-roi-table > div:first-child > div:first-child {\n  text-align: center;\n  white-space: nowrap;\n  text-overflow: ellipsis;\n  overflow: hidden;\n  margin-left: 4px;\n  margin-right: 4px;\n  width: calc(100% - 4px - 12px);\n}\n.igv-roi-table > div:first-child > div:last-child {\n  margin-right: 4px;\n  margin-bottom: 2px;\n  height: 12px;\n  width: 12px;\n  color: #7f7f7f;\n}\n.igv-roi-table > div:first-child > div:last-child > svg {\n  display: block;\n}\n.igv-roi-table > div:first-child > div:last-child:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-roi-table > .igv-roi-table-description {\n  padding: 4px;\n  margin-left: 4px;\n  word-break: break-all;\n  overflow-y: auto;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  background-color: transparent;\n}\n.igv-roi-table > .igv-roi-table-goto-explainer {\n  margin-top: 5px;\n  margin-left: 4px;\n  color: #7F7F7F;\n  font-style: italic;\n  height: 24px;\n  border-top: solid lightgray;\n  background-color: transparent;\n}\n.igv-roi-table > .igv-roi-table-column-titles {\n  height: 24px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: stretch;\n  align-items: stretch;\n  padding-right: 16px;\n  background-color: white;\n  border-top-color: #7f7f7f;\n  border-top-style: solid;\n  border-top-width: thin;\n  border-bottom-color: #7f7f7f;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-roi-table > .igv-roi-table-column-titles > div {\n  font-size: 14px;\n  vertical-align: middle;\n  line-height: 24px;\n  text-align: left;\n  margin-left: 4px;\n  height: 24px;\n  overflow: hidden;\n  text-overflow: ellipsis;\n  border-right-color: #7f7f7f;\n  border-right-style: solid;\n  border-right-width: thin;\n}\n.igv-roi-table > .igv-roi-table-column-titles > div:last-child {\n  border-right: unset;\n}\n.igv-roi-table > .igv-roi-table-row-container {\n  overflow: auto;\n  resize: both;\n  max-width: 1600px;\n  height: 360px;\n  background-color: transparent;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n}\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row {\n  height: 24px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: stretch;\n  align-items: stretch;\n}\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row > div {\n  font-size: 14px;\n  vertical-align: middle;\n  line-height: 24px;\n  text-align: left;\n  margin-left: 4px;\n  height: 24px;\n  white-space: nowrap;\n  overflow: hidden;\n  text-overflow: ellipsis;\n  border-right-color: transparent;\n  border-right-style: solid;\n  border-right-width: thin;\n}\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row > div:last-child {\n  border-right: unset;\n}\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row-hover {\n  background-color: rgba(0, 0, 0, 0.04);\n}\n.igv-roi-table > div:last-child {\n  height: 32px;\n  line-height: 32px;\n  border-top-color: #7f7f7f;\n  border-top-style: solid;\n  border-top-width: thin;\n  border-bottom-color: transparent;\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n  border-bottom-width: 0;\n  background-color: #eee;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n\n.igv-roi-table-row-selected {\n  background-color: rgba(0, 0, 0, 0.125);\n}\n\n.igv-roi-table-button {\n  cursor: pointer;\n  height: 20px;\n  user-select: none;\n  line-height: 20px;\n  text-align: center;\n  vertical-align: middle;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 13px;\n  font-weight: 400;\n  color: black;\n  padding-left: 6px;\n  padding-right: 6px;\n  background-color: rgb(239, 239, 239);\n  border-color: black;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 3px;\n}\n\n.igv-roi-table-button:hover {\n  font-weight: 400;\n  background-color: rgba(0, 0, 0, 0.13);\n}\n\n.igv-roi-region {\n  z-index: 64;\n  position: absolute;\n  top: 0;\n  bottom: 0;\n  pointer-events: none;\n  overflow: visible;\n  margin-top: 44px;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n}\n.igv-roi-region > div {\n  position: relative;\n  width: 100%;\n  height: 8px;\n  pointer-events: auto;\n}\n\n.igv-roi-menu {\n  position: absolute;\n  z-index: 1024;\n  width: 144px;\n  border-color: #7f7f7f;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: \"Open Sans\", sans-serif;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n}\n.igv-roi-menu > div:not(:last-child) {\n  border-bottom-color: rgba(128, 128, 128, 0.5);\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-roi-menu > div:first-child {\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-top-color: transparent;\n  border-top-style: solid;\n  border-top-width: 0;\n}\n.igv-roi-menu > div:last-child {\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n  border-bottom-color: transparent;\n  border-bottom-style: solid;\n  border-bottom-width: 0;\n}\n\n.igv-roi-menu-row {\n  height: 24px;\n  padding-left: 8px;\n  font-size: small;\n  text-align: start;\n  vertical-align: middle;\n  line-height: 24px;\n  background-color: white;\n}\n\n.igv-roi-menu-row-edit-description {\n  width: -webkit-fill-available;\n  font-size: small;\n  text-align: start;\n  vertical-align: middle;\n  background-color: white;\n  padding-left: 4px;\n  padding-right: 4px;\n  padding-bottom: 4px;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: stretch;\n  align-items: stretch;\n}\n.igv-roi-menu-row-edit-description > label {\n  margin-left: 2px;\n  margin-bottom: 0;\n  display: block;\n  width: -webkit-fill-available;\n}\n.igv-roi-menu-row-edit-description > input {\n  display: block;\n  margin-left: 2px;\n  margin-right: 2px;\n  margin-bottom: 1px;\n  width: -webkit-fill-available;\n}\n\n.igv-container {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  padding-top: 4px;\n  user-select: none;\n  -webkit-user-select: none;\n  -ms-user-select: none;\n}\n\n.igv-viewport {\n  position: relative;\n  margin-top: 5px;\n  line-height: 1;\n  overflow-x: hidden;\n  overflow-y: hidden;\n}\n\n.igv-viewport-content {\n  position: relative;\n  width: 100%;\n}\n.igv-viewport-content > canvas {\n  position: relative;\n  display: block;\n}\n\n.igv-column-container {\n  position: relative;\n  display: flex;\n  flex-direction: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n  width: 100%;\n}\n\n.igv-column-shim {\n  width: 1px;\n  margin-left: 2px;\n  margin-right: 2px;\n  background-color: #545453;\n}\n\n.igv-column {\n  position: relative;\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n}\n\n.igv-axis-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n  width: 50px;\n}\n.igv-axis-column > div {\n  margin-top: 5px;\n  width: 100%;\n}\n\n.igv-sample-name-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n}\n\n.igv-scrollbar-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n  width: 14px;\n}\n.igv-scrollbar-column > div {\n  position: relative;\n  margin-top: 5px;\n  width: 14px;\n}\n.igv-scrollbar-column > div > div {\n  cursor: pointer;\n  position: absolute;\n  top: 0;\n  left: 2px;\n  width: 8px;\n  border-width: 1px;\n  border-style: solid;\n  border-color: #c4c4c4;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n}\n.igv-scrollbar-column > div > div:hover {\n  background-color: #c4c4c4;\n}\n\n.igv-track-drag-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n  width: 12px;\n  background-color: white;\n}\n.igv-track-drag-column > .igv-track-drag-handle {\n  z-index: 512;\n  position: relative;\n  cursor: pointer;\n  margin-top: 5px;\n  width: 100%;\n  border-style: solid;\n  border-width: 0;\n  border-top-right-radius: 6px;\n  border-bottom-right-radius: 6px;\n  background-color: #c4c4c4;\n}\n.igv-track-drag-column .igv-track-drag-handle-hover {\n  background-color: #787878;\n}\n.igv-track-drag-column > .igv-track-drag-shim {\n  position: relative;\n  margin-top: 5px;\n  width: 100%;\n  border-style: solid;\n  border-width: 0;\n}\n\n.igv-gear-menu-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n  width: 28px;\n}\n.igv-gear-menu-column > div {\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n  margin-top: 5px;\n  width: 100%;\n  background: white;\n}\n.igv-gear-menu-column > div > div {\n  position: relative;\n  margin-top: 4px;\n  width: 16px;\n  height: 16px;\n  color: #7F7F7F;\n}\n.igv-gear-menu-column > div > div:hover {\n  cursor: pointer;\n  color: #444;\n}\n\n/*# sourceMappingURL=dom.css.map */\n';
+
+    var style = document.createElement('style');
+    style.setAttribute('type', 'text/css');
+    style.innerHTML = css;
+
+    document.head.append(style);
+
+}
+
+// Defines the top-level API for the igv module
+
+const setApiKey = igvxhr.setApiKey;
+
+embedCSS();
+
+function setGoogleOauthToken(accessToken) {
+    return igvxhr.setOauthToken(accessToken)
+}
+
+function setOauthToken(accessToken, host) {
+    return igvxhr.setOauthToken(accessToken, host)
+}
+
+// Backward compatibility
+const oauth = igvxhr.oauth;
+
+var index = {
+    TrackUtils,
+    IGVGraphics,
+    MenuUtils,
+    DataRangeDialog,
+    createTrack,
+    createBrowser,
+    removeBrowser,
+    removeAllBrowsers,
+    visibilityChange,
+    setGoogleOauthToken,
+    setOauthToken,
+    oauth,
+    version,
+    setApiKey,
+    registerFileFormats
+};
+
+export { index as default };
diff --git a/igv_component/node_modules/igv/dist/igv.esm.min.js b/igv_component/node_modules/igv/dist/igv.esm.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..e7cfe2f7ba14b38141a133723b7fbf615263fd64
--- /dev/null
+++ b/igv_component/node_modules/igv/dist/igv.esm.min.js
@@ -0,0 +1,49 @@
+/*!
+ * jQuery JavaScript Library v3.3.1 -ajax,-ajax/jsonp,-ajax/load,-ajax/parseXML,-ajax/script,-ajax/var/location,-ajax/var/nonce,-ajax/var/rquery,-ajax/xhr,-manipulation/_evalUrl,-event/ajax,-effects,-effects/Tween,-effects/animatedSelector
+ * https://jquery.com/
+ *
+ * Includes Sizzle.js
+ * https://sizzlejs.com/
+ *
+ * Copyright JS Foundation and other contributors
+ * Released under the MIT license
+ * https://jquery.org/license
+ *
+ * Date: 2018-01-20T17:24Z
+ */
+var e=[],t=window.document,i=Object.getPrototypeOf,n=e.slice,r=e.concat,s=e.push,o=e.indexOf,a={},l=a.toString,h=a.hasOwnProperty,c=h.toString,d=c.call(Object),u={},f=function(e){return"function"==typeof e&&"number"!=typeof e.nodeType},p=function(e){return null!=e&&e===e.window},g={type:!0,src:!0,noModule:!0};function m(e,i,n){var r,s=(i=i||t).createElement("script");if(s.text=e,n)for(r in g)n[r]&&(s[r]=n[r]);i.head.appendChild(s).parentNode.removeChild(s)}function b(e){return null==e?e+"":"object"==typeof e||"function"==typeof e?a[l.call(e)]||"object":typeof e}var w="3.3.1 -ajax,-ajax/jsonp,-ajax/load,-ajax/parseXML,-ajax/script,-ajax/var/location,-ajax/var/nonce,-ajax/var/rquery,-ajax/xhr,-manipulation/_evalUrl,-event/ajax,-effects,-effects/Tween,-effects/animatedSelector",v=function(e,t){return new v.fn.init(e,t)},y=/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g;function _(e){var t=!!e&&"length"in e&&e.length,i=b(e);return!f(e)&&!p(e)&&("array"===i||0===t||"number"==typeof t&&t>0&&t-1 in e)}v.fn=v.prototype={jquery:w,constructor:v,length:0,toArray:function(){return n.call(this)},get:function(e){return null==e?n.call(this):e<0?this[e+this.length]:this[e]},pushStack:function(e){var t=v.merge(this.constructor(),e);return t.prevObject=this,t},each:function(e){return v.each(this,e)},map:function(e){return this.pushStack(v.map(this,(function(t,i){return e.call(t,i,t)})))},slice:function(){return this.pushStack(n.apply(this,arguments))},first:function(){return this.eq(0)},last:function(){return this.eq(-1)},eq:function(e){var t=this.length,i=+e+(e<0?t:0);return this.pushStack(i>=0&&i<t?[this[i]]:[])},end:function(){return this.prevObject||this.constructor()},push:s,sort:e.sort,splice:e.splice},v.extend=v.fn.extend=function(){var e,t,i,n,r,s,o=arguments[0]||{},a=1,l=arguments.length,h=!1;for("boolean"==typeof o&&(h=o,o=arguments[a]||{},a++),"object"==typeof o||f(o)||(o={}),a===l&&(o=this,a--);a<l;a++)if(null!=(e=arguments[a]))for(t in e)i=o[t],o!==(n=e[t])&&(h&&n&&(v.isPlainObject(n)||(r=Array.isArray(n)))?(r?(r=!1,s=i&&Array.isArray(i)?i:[]):s=i&&v.isPlainObject(i)?i:{},o[t]=v.extend(h,s,n)):void 0!==n&&(o[t]=n));return o},v.extend({expando:"jQuery"+(w+Math.random()).replace(/\D/g,""),isReady:!0,error:function(e){throw new Error(e)},noop:function(){},isPlainObject:function(e){var t,n;return!(!e||"[object Object]"!==l.call(e))&&(!(t=i(e))||"function"==typeof(n=h.call(t,"constructor")&&t.constructor)&&c.call(n)===d)},isEmptyObject:function(e){var t;for(t in e)return!1;return!0},globalEval:function(e){m(e)},each:function(e,t){var i,n=0;if(_(e))for(i=e.length;n<i&&!1!==t.call(e[n],n,e[n]);n++);else for(n in e)if(!1===t.call(e[n],n,e[n]))break;return e},trim:function(e){return null==e?"":(e+"").replace(y,"")},makeArray:function(e,t){var i=t||[];return null!=e&&(_(Object(e))?v.merge(i,"string"==typeof e?[e]:e):s.call(i,e)),i},inArray:function(e,t,i){return null==t?-1:o.call(t,e,i)},merge:function(e,t){for(var i=+t.length,n=0,r=e.length;n<i;n++)e[r++]=t[n];return e.length=r,e},grep:function(e,t,i){for(var n=[],r=0,s=e.length,o=!i;r<s;r++)!t(e[r],r)!==o&&n.push(e[r]);return n},map:function(e,t,i){var n,s,o=0,a=[];if(_(e))for(n=e.length;o<n;o++)null!=(s=t(e[o],o,i))&&a.push(s);else for(o in e)null!=(s=t(e[o],o,i))&&a.push(s);return r.apply([],a)},guid:1,support:u}),"function"==typeof Symbol&&(v.fn[Symbol.iterator]=e[Symbol.iterator]),v.each("Boolean Number String Function Array Date RegExp Object Error Symbol".split(" "),(function(e,t){a["[object "+t+"]"]=t.toLowerCase()}));var x=
+/*!
+ * Sizzle CSS Selector Engine v2.3.3
+ * https://sizzlejs.com/
+ *
+ * Copyright jQuery Foundation and other contributors
+ * Released under the MIT license
+ * http://jquery.org/license
+ *
+ * Date: 2016-08-08
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i=document.createElement("div");e.appendChild(i),i.appendChild(wi("times")),i.addEventListener("click",(function(e){e.preventDefault(),e.stopPropagation(),t()}))}var ki=Object.freeze({__proto__:null,attachDialogCloseHandlerWithParent:xi});let Ci;function Si(e,t,i){t.addEventListener("mousedown",function(e){e.stopPropagation(),e.preventDefault();const t=Ai.bind(this),n=Ei.bind(this),r=getComputedStyle(this);Ci={constraint:i,dragFunction:t,dragEndFunction:n,screenX:e.screenX,screenY:e.screenY,top:parseInt(r.top.replace("px","")),left:parseInt(r.left.replace("px",""))},document.addEventListener("mousemove",t),document.addEventListener("mouseup",n),document.addEventListener("mouseleave",n),document.addEventListener("mouseexit",n)}.bind(e))}function Ai(e){if(!Ci)return void console.error("No drag data!");e.stopPropagation(),e.preventDefault();const t=e.screenX-Ci.screenX,i=e.screenY-Ci.screenY,n=Ci.left+t,r=Ci.constraint?Math.max(Ci.constraint.minY,Ci.top+i):Ci.top+i;this.style.left=`${n}px`,this.style.top=`${r}px`}function Ei(e){if(!Ci)return void console.error("No drag data!");e.stopPropagation(),e.preventDefault();const t=Ci.dragFunction,i=Ci.dragEndFunction;document.removeEventListener("mousemove",t),document.removeEventListener("mouseup",i),document.removeEventListener("mouseleave",i),document.removeEventListener("mouseexit",i),Ci=void 0}const Ti={401:"Access unauthorized",403:"Access forbidden",404:"Not found"};class Mi{constructor(e,t){this.alertProps=Object.assign({shouldFocus:!0,preventScroll:!1},t),this.container=pt({class:"igv-ui-alert-dialog-container"}),e.appendChild(this.container),this.container.setAttribute("tabIndex","-1");const i=pt();this.container.appendChild(i),this.errorHeadline=pt(),i.appendChild(this.errorHeadline),this.errorHeadline.textContent="";let n=pt({class:"igv-ui-alert-dialog-body"});this.container.appendChild(n),this.body=pt({class:"igv-ui-alert-dialog-body-copy"}),n.appendChild(this.body);let r=pt();this.container.appendChild(r),this.ok=pt(),r.appendChild(this.ok),this.ok.textContent="OK";const s=()=>{"function"==typeof this.callback&&(this.callback("OK"),this.callback=void 0),this.body.innerHTML="",mt(this.container)};this.ok.addEventListener("click",(e=>{e.stopPropagation(),s()})),this.container.addEventListener("keypress",(e=>{e.stopPropagation(),"Enter"===e.key&&s()})),Si(this.container,i),mt(this.container)}present(e,t){this.errorHeadline.textContent=e.message?"ERROR":"";let i=e.message||e;Ti.hasOwnProperty(i)&&(i=Ti[i]);const n=mi.sanitize(i);this.body.innerHTML=n,this.callback=t,bt(this.container),this.alertProps.shouldFocus&&this.container.focus({preventScroll:this.alertProps.preventScroll})}}class Ri{constructor(e){this.parent=e,this.container=pt({class:"igv-ui-generic-dialog-container"}),e.appendChild(this.container);const t=pt({class:"igv-ui-generic-dialog-header"});this.container.appendChild(t),this.label=pt({class:"igv-ui-generic-dialog-one-liner"}),this.container.appendChild(this.label),this.label.text="Unlabeled",this.input_container=pt({class:"igv-ui-generic-dialog-input"}),this.container.appendChild(this.input_container),this.input=document.createElement("input"),this.input_container.appendChild(this.input);const i=pt({class:"igv-ui-generic-dialog-ok-cancel"});this.container.appendChild(i),this.ok=pt(),i.appendChild(this.ok),this.ok.textContent="OK",this.cancel=pt(),i.appendChild(this.cancel),this.cancel.textContent="Cancel",mt(this.container),this.input.addEventListener("keyup",(e=>{13===e.keyCode&&("function"==typeof this.callback&&(this.callback(this.input.value),this.callback=void 0),this.input.value=void 0,mt(this.container))})),this.ok.addEventListener("click",(()=>{"function"==typeof this.callback&&(this.callback(this.input.value),this.callback=void 0),this.input.value=void 0,mt(this.container)}));const n=()=>{this.input.value="",mt(this.container)};this.cancel.addEventListener("click",n),xi(t,n),Si(this.container,t)}get value(){return mi.sanitize(this.input.value)}present(e,t){this.label.textContent=e.label,this.input.value=e.value,this.callback=e.callback||e.click,bt(this.container),this.clampLocation(t.clientX,t.clientY)}clampLocation(e,t){const{width:i,height:n}=this.container.getBoundingClientRect(),r=window.innerHeight,s=window.innerWidth,o=Math.min(r-n,t),a=Math.min(s-i,e);this.container.style.left=`${a}px`,this.container.style.top=`${o}px`}}const Li={licorice:"#000000",lead:"#1e1e1e",tungsten:"#3a3a3a",iron:"#545453",steel:"#6e6e6e",tin:"#878687",nickel:"#888787",aluminum:"#a09fa0",magnesium:"#b8b8b8",silver:"#d0d0d0",mercury:"#e8e8e8",snow:"#ffffff",cayenne:"#891100",mocha:"#894800",aspargus:"#888501",fern:"#458401",clover:"#028401",moss:"#018448",teal:"#008688",ocean:"#004a88",midnight:"#001888",eggplant:"#491a88",plum:"#891e88",maroon:"#891648",maraschino:"#ff2101",tangerine:"#ff8802",lemon:"#fffa03",lime:"#83f902",spring:"#05f802",seam_foam:"#03f987",turquoise:"#00fdff",aqua:"#008cff",blueberry:"#002eff",grape:"#8931ff",magenta:"#ff39ff",strawberry:"#ff2987",salmon:"#ff726e",cantaloupe:"#ffce6e",banana:"#fffb6d",honeydew:"#cefa6e",flora:"#68f96e",spindrift:"#68fbd0",ice:"#68fdff",sky:"#6acfff",orchid:"#6e76ff",lavender:"#d278ff",bubblegum:"#ff7aff",carnation:"#ff7fd3"};class Ii{constructor({parent:e,top:t,left:i,width:n,height:r,border:s,closeHandler:o}){let a=pt({class:"igv-ui-generic-container"});e.appendChild(a),mt(a),this.container=a,void 0!==t&&(this.container.style.top=`${t}px`),void 0!==i&&(this.container.style.left=`${i}px`),void 0!==n&&(this.container.style.width=`${n}px`),void 0!==r&&(this.container.style.height=`${r}px`),s&&(this.container.style.border=s);const l=pt();this.container.appendChild(l),xi(l,(e=>{mt(this.container),"function"==typeof o&&o(e)})),Si(this.container,l)}show(){bt(this.container)}hide(){mt(this.container)}dispose(){this.container.parent&&this.container.parent.removeChild(this.container)}}class Ni extends Ii{constructor({parent:e,top:t,left:i,width:n,height:r,defaultColors:s,colorHandler:o}){super({parent:e,top:t,left:i,width:n,height:r,border:"1px solid gray"}),Fi(this.container,o,s)}}const Fi=(e,t,i)=>{const n=Object.values(Li);for(let i of n){const n=pt({class:"igv-ui-color-swatch"});e.appendChild(n),Bi(n,i,t)}if(i)for(let n of i){const i=pt({class:"igv-ui-color-swatch"});e.appendChild(i),Bi(i,n,t)}},Bi=(e,t,i)=>{e.style.backgroundColor=t,e.addEventListener("mouseenter",(i=>e.style.borderColor=t)),e.addEventListener("mouseleave",(t=>e.style.borderColor="white")),e.addEventListener("click",(e=>{e.stopPropagation(),i(t)})),e.addEventListener("touchend",(e=>{e.stopPropagation(),i(t)}))};class Oi{constructor(e,t){this.parent=e,this.popover=pt({class:"igv-ui-popover"}),e.appendChild(this.popover);const i=pt();this.popover.appendChild(i);const n=pt();i.appendChild(n),t&&(n.textContent=t),xi(i,(()=>this.hide())),Si(this.popover,i),this.popoverContent=pt(),this.popover.appendChild(this.popoverContent),this.popover.style.display="none"}presentContentWithEvent(e,t){this.popover.style.display="block",this.popoverContent.innerHTML=t,Di(e,this.popover,this.popoverContent)}presentMenu(e,t){if(0===t.length)return;this.popover.style.display="block";const i=function(e,t){const i=e.map((function(e,i){let n;if("string"==typeof e)n=pt(),n.innerHTML=e;else if("Node"==typeof e)n=e;else{if("function"==typeof e.init&&e.init(),"checkbox"===e.type)n=bi("Show all bases",e.value);else if("color"===e.type){const r=new Ni({parent:t.parentElement,width:364,colorHandler:t=>e.click(t)});n=pt(),"string"==typeof e.label&&(n.innerHTML=e.label);const s=e=>{r.show(),mt(t),e.preventDefault(),e.stopPropagation()};n.addEventListener("click",s),n.addEventListener("touchend",s),n.addEventListener("mouseup",(function(e){e.preventDefault(),e.stopPropagation()}))}else n=pt(),"string"==typeof e.label&&(n.innerHTML=e.label);if(e.click&&"color"!==e.type){function o(i){e.click(),mt(t),i.preventDefault(),i.stopPropagation()}n.addEventListener("click",o),n.addEventListener("touchend",o),n.addEventListener("mouseup",(function(e){e.preventDefault(),e.stopPropagation()}))}}return{object:n,init:e.init}}));return i}(t,this.popover);for(let e of i)this.popoverContent.appendChild(e.object);Di(e,this.popover,this.popoverContent)}hide(){this.popover.style.display="none",this.dispose()}dispose(){this.popover&&this.popover.parentNode.removeChild(this.popover);const e=Object.keys(this);for(let t of e)this[t]=void 0}}function Di(e,t,i){const{x:n,y:r,width:s}=yt(e,t.parentNode);t.style.top=`${r}px`;const{width:o}=t.getBoundingClientRect(),a=n+o,l=a-s;t.style.left=`${a>s?n-l:n}px`,i.style.maxWidth=`${Math.min(o,s)}px`}class Pi extends Ii{constructor({parent:e,width:t}){super({parent:e,width:t,border:"1px solid gray"})}configure(e,t){this.colorHandlers=t,this.setActiveColorHandler("color"),this.createSwatches(e)}setActiveColorHandler(e){this.activeColorHandler=this.colorHandlers[e]}createSwatches(e){this.container.querySelectorAll(".igv-ui-color-swatch").forEach((e=>e.remove()));const t=Object.values(Li);for(let e of t){const t=pt({class:"igv-ui-color-swatch"});this.container.appendChild(t),this.decorateSwatch(t,e)}if(e)for(let t of e){const e=pt({class:"igv-ui-color-swatch"});this.container.appendChild(e),this.decorateSwatch(e,t)}}decorateSwatch(e,t){e.style.backgroundColor=t,e.addEventListener("mouseenter",(()=>e.style.borderColor=t)),e.addEventListener("mouseleave",(()=>e.style.borderColor="white")),e.addEventListener("click",(e=>{e.stopPropagation(),this.activeColorHandler(t)})),e.addEventListener("touchend",(e=>{e.stopPropagation(),this.activeColorHandler(t)}))}}if("undefined"!=typeof document){function zi(e){for(let t of document.styleSheets)if(t=t.href?t.href.replace(/^.*[\\\/]/,""):"",t===e)return!0;return!1}zi("igv-ui.css")||function(){const e=document.createElement("style");e.setAttribute("type","text/css"),e.setAttribute("title","igv-ui.css"),e.innerHTML='.igv-ui-popover {\n  cursor: default;\n  position: absolute;\n  z-index: 2048;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: 1px;\n  font-family: "Open Sans", sans-serif;\n  font-size: small;\n  background-color: white;\n}\n.igv-ui-popover > div:first-child {\n  display: flex;\n  flex-direction: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-ui-popover > div:first-child > div:first-child {\n  margin-left: 4px;\n}\n.igv-ui-popover > div:first-child > div:last-child {\n  margin-right: 4px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-ui-popover > div:first-child > div:last-child:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-ui-popover > div:last-child {\n  overflow-y: auto;\n  overflow-x: hidden;\n  max-height: 400px;\n  max-width: 800px;\n  background-color: white;\n}\n.igv-ui-popover > div:last-child > div {\n  user-select: all;\n  margin-left: 4px;\n  margin-right: 4px;\n  min-width: 220px;\n  overflow-x: hidden;\n  text-overflow: ellipsis;\n  white-space: nowrap;\n}\n.igv-ui-popover > div:last-child > div > span {\n  font-weight: bolder;\n}\n.igv-ui-popover > div:last-child hr {\n  width: 100%;\n}\n\n.igv-ui-alert-dialog-container {\n  box-sizing: content-box;\n  position: absolute;\n  z-index: 2048;\n  top: 50%;\n  left: 50%;\n  width: 400px;\n  height: 200px;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  outline: none;\n  font-family: "Open Sans", sans-serif;\n  font-size: 15px;\n  font-weight: 400;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n}\n.igv-ui-alert-dialog-container > div:first-child {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-ui-alert-dialog-container > div:first-child div:first-child {\n  padding-left: 8px;\n}\n.igv-ui-alert-dialog-container .igv-ui-alert-dialog-body {\n  -webkit-user-select: text;\n  -moz-user-select: text;\n  -ms-user-select: text;\n  user-select: text;\n  color: #373737;\n  width: 100%;\n  height: calc(100% - 24px - 64px);\n  overflow-y: scroll;\n}\n.igv-ui-alert-dialog-container .igv-ui-alert-dialog-body .igv-ui-alert-dialog-body-copy {\n  margin: 16px;\n  width: auto;\n  height: auto;\n  overflow-wrap: break-word;\n  word-break: break-word;\n  background-color: white;\n  border: unset;\n}\n.igv-ui-alert-dialog-container > div:last-child {\n  width: 100%;\n  margin-bottom: 10px;\n  background-color: white;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: center;\n  align-items: center;\n}\n.igv-ui-alert-dialog-container > div:last-child div {\n  margin: unset;\n  width: 40px;\n  height: 30px;\n  line-height: 30px;\n  text-align: center;\n  color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: small;\n  font-weight: 400;\n  border-color: #2B81AF;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 4px;\n  background-color: #2B81AF;\n}\n.igv-ui-alert-dialog-container > div:last-child div:hover {\n  cursor: pointer;\n  border-color: #25597f;\n  background-color: #25597f;\n}\n\n.igv-ui-color-swatch {\n  position: relative;\n  box-sizing: content-box;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: wrap;\n  justify-content: center;\n  align-items: center;\n  width: 32px;\n  height: 32px;\n  border-style: solid;\n  border-width: 2px;\n  border-color: white;\n  border-radius: 4px;\n}\n\n.igv-ui-color-swatch:hover {\n  border-color: dimgray;\n}\n\n.igv-ui-colorpicker-menu-close-button {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  width: 100%;\n  height: 32px;\n  margin-top: 4px;\n  margin-bottom: 4px;\n  padding-right: 8px;\n}\n.igv-ui-colorpicker-menu-close-button i.fa {\n  display: block;\n  margin-left: 4px;\n  margin-right: 4px;\n  color: #5f5f5f;\n}\n.igv-ui-colorpicker-menu-close-button i.fa:hover,\n.igv-ui-colorpicker-menu-close-button i.fa:focus,\n.igv-ui-colorpicker-menu-close-button i.fa:active {\n  cursor: pointer;\n  color: #0f0f0f;\n}\n\n.igv-ui-generic-dialog-container {\n  box-sizing: content-box;\n  position: fixed;\n  top: 0;\n  left: 0;\n  width: 300px;\n  height: 200px;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  z-index: 2048;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header div {\n  margin-right: 4px;\n  margin-bottom: 2px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header div:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-one-liner {\n  color: #373737;\n  width: 95%;\n  height: 24px;\n  line-height: 24px;\n  text-align: left;\n  margin-top: 8px;\n  padding-left: 8px;\n  overflow-wrap: break-word;\n  background-color: white;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input {\n  margin-top: 8px;\n  width: 95%;\n  height: 24px;\n  color: #373737;\n  line-height: 24px;\n  padding-left: 8px;\n  background-color: white;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input div {\n  width: 30%;\n  height: 100%;\n  font-size: 16px;\n  text-align: right;\n  padding-right: 8px;\n  background-color: white;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input input {\n  display: block;\n  height: 100%;\n  width: 100%;\n  padding-left: 4px;\n  font-family: "Open Sans", sans-serif;\n  font-weight: 400;\n  color: #373737;\n  text-align: left;\n  outline: none;\n  border-style: solid;\n  border-width: thin;\n  border-color: #7F7F7F;\n  background-color: white;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input input {\n  width: 50%;\n  font-size: 16px;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input {\n  margin-top: 8px;\n  width: calc(100% - 16px);\n  height: 24px;\n  color: #373737;\n  line-height: 24px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input input {\n  display: block;\n  height: 100%;\n  width: 100%;\n  padding-left: 4px;\n  font-family: "Open Sans", sans-serif;\n  font-weight: 400;\n  color: #373737;\n  text-align: left;\n  outline: none;\n  border-style: solid;\n  border-width: thin;\n  border-color: #7F7F7F;\n  background-color: white;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input input {\n  font-size: 16px;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel {\n  width: 100%;\n  height: 28px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div {\n  margin-top: 32px;\n  color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  width: 75px;\n  height: 28px;\n  line-height: 28px;\n  text-align: center;\n  border-color: transparent;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 2px;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:first-child {\n  margin-left: 32px;\n  margin-right: 0;\n  background-color: #5ea4e0;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:last-child {\n  margin-left: 0;\n  margin-right: 32px;\n  background-color: #c4c4c4;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:first-child:hover {\n  cursor: pointer;\n  background-color: #3b5c7f;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:last-child:hover {\n  cursor: pointer;\n  background-color: #7f7f7f;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok {\n  width: 100%;\n  height: 36px;\n  margin-top: 32px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok div {\n  width: 98px;\n  height: 36px;\n  line-height: 36px;\n  text-align: center;\n  color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  border-color: white;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 4px;\n  background-color: #2B81AF;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok div:hover {\n  cursor: pointer;\n  background-color: #25597f;\n}\n\n.igv-ui-generic-container {\n  box-sizing: content-box;\n  position: absolute;\n  z-index: 2048;\n  background-color: white;\n  cursor: pointer;\n  display: flex;\n  flex-direction: row;\n  flex-wrap: wrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-ui-generic-container > div:first-child {\n  cursor: move;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  height: 24px;\n  width: 100%;\n  background-color: #dddddd;\n}\n.igv-ui-generic-container > div:first-child > div {\n  display: block;\n  color: #5f5f5f;\n  cursor: pointer;\n  width: 14px;\n  height: 14px;\n  margin-right: 8px;\n  margin-bottom: 4px;\n}\n\n.igv-ui-dialog {\n  z-index: 2048;\n  position: fixed;\n  width: fit-content;\n  height: fit-content;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  background-color: white;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n}\n.igv-ui-dialog .igv-ui-dialog-header {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-ui-dialog .igv-ui-dialog-header div {\n  margin-right: 4px;\n  margin-bottom: 2px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-ui-dialog .igv-ui-dialog-header div:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-ui-dialog .igv-ui-dialog-one-liner {\n  width: 95%;\n  height: 24px;\n  line-height: 24px;\n  text-align: left;\n  margin: 8px;\n  overflow-wrap: break-word;\n  background-color: white;\n  font-weight: bold;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel {\n  width: 100%;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div {\n  margin: 16px;\n  margin-top: 32px;\n  color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  width: 75px;\n  height: 28px;\n  line-height: 28px;\n  text-align: center;\n  border-color: transparent;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 2px;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div:first-child {\n  background-color: #5ea4e0;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div:last-child {\n  background-color: #c4c4c4;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div:first-child:hover {\n  cursor: pointer;\n  background-color: #3b5c7f;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div:last-child:hover {\n  cursor: pointer;\n  background-color: #7f7f7f;\n}\n.igv-ui-dialog .igv-ui-dialog-ok {\n  width: 100%;\n  height: 36px;\n  margin-top: 32px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-dialog .igv-ui-dialog-ok div {\n  width: 98px;\n  height: 36px;\n  line-height: 36px;\n  text-align: center;\n  color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  border-color: white;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 4px;\n  background-color: #2B81AF;\n}\n.igv-ui-dialog .igv-ui-dialog-ok div:hover {\n  cursor: pointer;\n  background-color: #25597f;\n}\n\n.igv-ui-panel, .igv-ui-panel-row, .igv-ui-panel-column {\n  z-index: 2048;\n  background-color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  display: flex;\n  justify-content: flex-start;\n  align-items: flex-start;\n}\n\n.igv-ui-panel-column {\n  display: flex;\n  flex-direction: column;\n}\n\n.igv-ui-panel-row {\n  display: flex;\n  flex-direction: row;\n}\n\n.igv-ui-textbox {\n  background-color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  display: flex;\n  justify-content: flex-start;\n  align-items: flex-start;\n}\n\n.igv-ui-table {\n  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Array(60);tn(un);const fn=new Array(512);tn(fn);const pn=new Array(256);tn(pn);const gn=new Array(29);tn(gn);const mn=new Array(sn);function bn(e,t,i,n,r){this.static_tree=e,this.extra_bits=t,this.extra_base=i,this.elems=n,this.max_length=r,this.has_stree=e&&e.length}let wn,vn,yn;function _n(e,t){this.dyn_tree=e,this.max_code=0,this.stat_desc=t}tn(mn);const xn=e=>e<256?fn[e]:fn[256+(e>>>7)],kn=(e,t)=>{e.pending_buf[e.pending++]=255&t,e.pending_buf[e.pending++]=t>>>8&255},Cn=(e,t,i)=>{e.bi_valid>16-i?(e.bi_buf|=t<<e.bi_valid&65535,kn(e,e.bi_buf),e.bi_buf=t>>16-e.bi_valid,e.bi_valid+=i-16):(e.bi_buf|=t<<e.bi_valid&65535,e.bi_valid+=i)},Sn=(e,t,i)=>{Cn(e,i[2*t],i[2*t+1])},An=(e,t)=>{let i=0;do{i|=1&e,e>>>=1,i<<=1}while(--t>0);return i>>>1},En=(e,t,i)=>{const n=new Array(16);let r,s,o=0;for(r=1;r<=on;r++)o=o+i[r-1]<<1,n[r]=o;for(s=0;s<=t;s++){let t=e[2*s+1];0!==t&&(e[2*s]=An(n[t]++,t))}},Tn=e=>{let t;for(t=0;t<rn;t++)e.dyn_ltree[2*t]=0;for(t=0;t<sn;t++)e.dyn_dtree[2*t]=0;for(t=0;t<19;t++)e.bl_tree[2*t]=0;e.dyn_ltree[512]=1,e.opt_len=e.static_len=0,e.sym_next=e.matches=0},Mn=e=>{e.bi_valid>8?kn(e,e.bi_buf):e.bi_valid>0&&(e.pending_buf[e.pending++]=e.bi_buf),e.bi_buf=0,e.bi_valid=0},Rn=(e,t,i,n)=>{const r=2*t,s=2*i;return e[r]<e[s]||e[r]===e[s]&&n[t]<=n[i]},Ln=(e,t,i)=>{const n=e.heap[i];let r=i<<1;for(;r<=e.heap_len&&(r<e.heap_len&&Rn(t,e.heap[r+1],e.heap[r],e.depth)&&r++,!Rn(t,n,e.heap[r],e.depth));)e.heap[i]=e.heap[r],i=r,r<<=1;e.heap[i]=n},In=(e,t,i)=>{let n,r,s,o,a=0;if(0!==e.sym_next)do{n=255&e.pending_buf[e.sym_buf+a++],n+=(255&e.pending_buf[e.sym_buf+a++])<<8,r=e.pending_buf[e.sym_buf+a++],0===n?Sn(e,r,t):(s=pn[r],Sn(e,s+nn+1,t),o=an[s],0!==o&&(r-=gn[s],Cn(e,r,o)),n--,s=xn(n),Sn(e,s,i),o=ln[s],0!==o&&(n-=mn[s],Cn(e,n,o)))}while(a<e.sym_next);Sn(e,256,t)},Nn=(e,t)=>{const i=t.dyn_tree,n=t.stat_desc.static_tree,r=t.stat_desc.has_stree,s=t.stat_desc.elems;let o,a,l,h=-1;for(e.heap_len=0,e.heap_max=573,o=0;o<s;o++)0!==i[2*o]?(e.heap[++e.heap_len]=h=o,e.depth[o]=0):i[2*o+1]=0;for(;e.heap_len<2;)l=e.heap[++e.heap_len]=h<2?++h:0,i[2*l]=1,e.depth[l]=0,e.opt_len--,r&&(e.static_len-=n[2*l+1]);for(t.max_code=h,o=e.heap_len>>1;o>=1;o--)Ln(e,i,o);l=s;do{o=e.heap[1],e.heap[1]=e.heap[e.heap_len--],Ln(e,i,1),a=e.heap[1],e.heap[--e.heap_max]=o,e.heap[--e.heap_max]=a,i[2*l]=i[2*o]+i[2*a],e.depth[l]=(e.depth[o]>=e.depth[a]?e.depth[o]:e.depth[a])+1,i[2*o+1]=i[2*a+1]=l,e.heap[1]=l++,Ln(e,i,1)}while(e.heap_len>=2);e.heap[--e.heap_max]=e.heap[1],((e,t)=>{const i=t.dyn_tree,n=t.max_code,r=t.stat_desc.static_tree,s=t.stat_desc.has_stree,o=t.stat_desc.extra_bits,a=t.stat_desc.extra_base,l=t.stat_desc.max_length;let h,c,d,u,f,p,g=0;for(u=0;u<=on;u++)e.bl_count[u]=0;for(i[2*e.heap[e.heap_max]+1]=0,h=e.heap_max+1;h<573;h++)c=e.heap[h],u=i[2*i[2*c+1]+1]+1,u>l&&(u=l,g++),i[2*c+1]=u,c>n||(e.bl_count[u]++,f=0,c>=a&&(f=o[c-a]),p=i[2*c],e.opt_len+=p*(u+f),s&&(e.static_len+=p*(r[2*c+1]+f)));if(0!==g){do{for(u=l-1;0===e.bl_count[u];)u--;e.bl_count[u]--,e.bl_count[u+1]+=2,e.bl_count[l]--,g-=2}while(g>0);for(u=l;0!==u;u--)for(c=e.bl_count[u];0!==c;)d=e.heap[--h],d>n||(i[2*d+1]!==u&&(e.opt_len+=(u-i[2*d+1])*i[2*d],i[2*d+1]=u),c--)}})(e,t),En(i,h,e.bl_count)},Fn=(e,t,i)=>{let n,r,s=-1,o=t[1],a=0,l=7,h=4;for(0===o&&(l=138,h=3),t[2*(i+1)+1]=65535,n=0;n<=i;n++)r=o,o=t[2*(n+1)+1],++a<l&&r===o||(a<h?e.bl_tree[2*r]+=a:0!==r?(r!==s&&e.bl_tree[2*r]++,e.bl_tree[32]++):a<=10?e.bl_tree[34]++:e.bl_tree[36]++,a=0,s=r,0===o?(l=138,h=3):r===o?(l=6,h=3):(l=7,h=4))},Bn=(e,t,i)=>{let n,r,s=-1,o=t[1],a=0,l=7,h=4;for(0===o&&(l=138,h=3),n=0;n<=i;n++)if(r=o,o=t[2*(n+1)+1],!(++a<l&&r===o)){if(a<h)do{Sn(e,r,e.bl_tree)}while(0!=--a);else 0!==r?(r!==s&&(Sn(e,r,e.bl_tree),a--),Sn(e,16,e.bl_tree),Cn(e,a-3,2)):a<=10?(Sn(e,17,e.bl_tree),Cn(e,a-3,3)):(Sn(e,18,e.bl_tree),Cn(e,a-11,7));a=0,s=r,0===o?(l=138,h=3):r===o?(l=6,h=3):(l=7,h=4)}};let On=!1;const Dn=(e,t,i,n)=>{Cn(e,0+(n?1:0),3),Mn(e),kn(e,i),kn(e,~i),i&&e.pending_buf.set(e.window.subarray(t,t+i),e.pending),e.pending+=i};var Pn=(e,t,i,n)=>{let r,s,o=0;e.level>0?(2===e.strm.data_type&&(e.strm.data_type=(e=>{let t,i=4093624447;for(t=0;t<=31;t++,i>>>=1)if(1&i&&0!==e.dyn_ltree[2*t])return 0;if(0!==e.dyn_ltree[18]||0!==e.dyn_ltree[20]||0!==e.dyn_ltree[26])return 1;for(t=32;t<nn;t++)if(0!==e.dyn_ltree[2*t])return 1;return 0})(e)),Nn(e,e.l_desc),Nn(e,e.d_desc),o=(e=>{let t;for(Fn(e,e.dyn_ltree,e.l_desc.max_code),Fn(e,e.dyn_dtree,e.d_desc.max_code),Nn(e,e.bl_desc),t=18;t>=3&&0===e.bl_tree[2*cn[t]+1];t--);return e.opt_len+=3*(t+1)+5+5+4,t})(e),r=e.opt_len+3+7>>>3,s=e.static_len+3+7>>>3,s<=r&&(r=s)):r=s=i+5,i+4<=r&&-1!==t?Dn(e,t,i,n):4===e.strategy||s===r?(Cn(e,2+(n?1:0),3),In(e,dn,un)):(Cn(e,4+(n?1:0),3),((e,t,i,n)=>{let r;for(Cn(e,t-257,5),Cn(e,i-1,5),Cn(e,n-4,4),r=0;r<n;r++)Cn(e,e.bl_tree[2*cn[r]+1],3);Bn(e,e.dyn_ltree,t-1),Bn(e,e.dyn_dtree,i-1)})(e,e.l_desc.max_code+1,e.d_desc.max_code+1,o+1),In(e,e.dyn_ltree,e.dyn_dtree)),Tn(e),n&&Mn(e)},zn={_tr_init:e=>{On||((()=>{let e,t,i,n,r;const s=new Array(16);for(i=0,n=0;n<28;n++)for(gn[n]=i,e=0;e<1<<an[n];e++)pn[i++]=n;for(pn[i-1]=n,r=0,n=0;n<16;n++)for(mn[n]=r,e=0;e<1<<ln[n];e++)fn[r++]=n;for(r>>=7;n<sn;n++)for(mn[n]=r<<7,e=0;e<1<<ln[n]-7;e++)fn[256+r++]=n;for(t=0;t<=on;t++)s[t]=0;for(e=0;e<=143;)dn[2*e+1]=8,e++,s[8]++;for(;e<=255;)dn[2*e+1]=9,e++,s[9]++;for(;e<=279;)dn[2*e+1]=7,e++,s[7]++;for(;e<=287;)dn[2*e+1]=8,e++,s[8]++;for(En(dn,287,s),e=0;e<sn;e++)un[2*e+1]=5,un[2*e]=An(e,5);wn=new bn(dn,an,257,rn,on),vn=new bn(un,ln,0,sn,on),yn=new bn(new Array(0),hn,0,19,7)})(),On=!0),e.l_desc=new _n(e.dyn_ltree,wn),e.d_desc=new _n(e.dyn_dtree,vn),e.bl_desc=new _n(e.bl_tree,yn),e.bi_buf=0,e.bi_valid=0,Tn(e)},_tr_stored_block:Dn,_tr_flush_block:Pn,_tr_tally:(e,t,i)=>(e.pending_buf[e.sym_buf+e.sym_next++]=t,e.pending_buf[e.sym_buf+e.sym_next++]=t>>8,e.pending_buf[e.sym_buf+e.sym_next++]=i,0===t?e.dyn_ltree[2*i]++:(e.matches++,t--,e.dyn_ltree[2*(pn[i]+nn+1)]++,e.dyn_dtree[2*xn(t)]++),e.sym_next===e.sym_end),_tr_align:e=>{Cn(e,2,3),Sn(e,256,dn),(e=>{16===e.bi_valid?(kn(e,e.bi_buf),e.bi_buf=0,e.bi_valid=0):e.bi_valid>=8&&(e.pending_buf[e.pending++]=255&e.bi_buf,e.bi_buf>>=8,e.bi_valid-=8)})(e)}};var Hn=(e,t,i,n)=>{let r=65535&e|0,s=e>>>16&65535|0,o=0;for(;0!==i;){o=i>2e3?2e3:i,i-=o;do{r=r+t[n++]|0,s=s+r|0}while(--o);r%=65521,s%=65521}return r|s<<16|0};const Un=new Uint32Array((()=>{let e,t=[];for(var i=0;i<256;i++){e=i;for(var n=0;n<8;n++)e=1&e?3988292384^e>>>1:e>>>1;t[i]=e}return t})());var Vn=(e,t,i,n)=>{const r=Un,s=n+i;e^=-1;for(let i=n;i<s;i++)e=e>>>8^r[255&(e^t[i])];return-1^e},qn={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"},jn={Z_NO_FLUSH:0,Z_PARTIAL_FLUSH:1,Z_SYNC_FLUSH:2,Z_FULL_FLUSH:3,Z_FINISH:4,Z_BLOCK:5,Z_TREES:6,Z_OK:0,Z_STREAM_END:1,Z_NEED_DICT:2,Z_ERRNO:-1,Z_STREAM_ERROR:-2,Z_DATA_ERROR:-3,Z_MEM_ERROR:-4,Z_BUF_ERROR:-5,Z_NO_COMPRESSION:0,Z_BEST_SPEED:1,Z_BEST_COMPRESSION:9,Z_DEFAULT_COMPRESSION:-1,Z_FILTERED:1,Z_HUFFMAN_ONLY:2,Z_RLE:3,Z_FIXED:4,Z_DEFAULT_STRATEGY:0,Z_BINARY:0,Z_TEXT:1,Z_UNKNOWN:2,Z_DEFLATED:8};const{_tr_init:$n,_tr_stored_block:Wn,_tr_flush_block:Gn,_tr_tally:Zn,_tr_align:Qn}=zn,{Z_NO_FLUSH:Xn,Z_PARTIAL_FLUSH:Yn,Z_FULL_FLUSH:Kn,Z_FINISH:Jn,Z_BLOCK:er,Z_OK:tr,Z_STREAM_END:ir,Z_STREAM_ERROR:nr,Z_DATA_ERROR:rr,Z_BUF_ERROR:sr,Z_DEFAULT_COMPRESSION:or,Z_FILTERED:ar,Z_HUFFMAN_ONLY:lr,Z_RLE:hr,Z_FIXED:cr,Z_DEFAULT_STRATEGY:dr,Z_UNKNOWN:ur,Z_DEFLATED:fr}=jn,pr=258,gr=262,mr=42,br=113,wr=666,vr=(e,t)=>(e.msg=qn[t],t),yr=e=>2*e-(e>4?9:0),_r=e=>{let t=e.length;for(;--t>=0;)e[t]=0},xr=e=>{let t,i,n,r=e.w_size;t=e.hash_size,n=t;do{i=e.head[--n],e.head[n]=i>=r?i-r:0}while(--t);t=r,n=t;do{i=e.prev[--n],e.prev[n]=i>=r?i-r:0}while(--t)};let kr=(e,t,i)=>(t<<e.hash_shift^i)&e.hash_mask;const Cr=e=>{const t=e.state;let i=t.pending;i>e.avail_out&&(i=e.avail_out),0!==i&&(e.output.set(t.pending_buf.subarray(t.pending_out,t.pending_out+i),e.next_out),e.next_out+=i,t.pending_out+=i,e.total_out+=i,e.avail_out-=i,t.pending-=i,0===t.pending&&(t.pending_out=0))},Sr=(e,t)=>{Gn(e,e.block_start>=0?e.block_start:-1,e.strstart-e.block_start,t),e.block_start=e.strstart,Cr(e.strm)},Ar=(e,t)=>{e.pending_buf[e.pending++]=t},Er=(e,t)=>{e.pending_buf[e.pending++]=t>>>8&255,e.pending_buf[e.pending++]=255&t},Tr=(e,t,i,n)=>{let r=e.avail_in;return r>n&&(r=n),0===r?0:(e.avail_in-=r,t.set(e.input.subarray(e.next_in,e.next_in+r),i),1===e.state.wrap?e.adler=Hn(e.adler,t,r,i):2===e.state.wrap&&(e.adler=Vn(e.adler,t,r,i)),e.next_in+=r,e.total_in+=r,r)},Mr=(e,t)=>{let i,n,r=e.max_chain_length,s=e.strstart,o=e.prev_length,a=e.nice_match;const l=e.strstart>e.w_size-gr?e.strstart-(e.w_size-gr):0,h=e.window,c=e.w_mask,d=e.prev,u=e.strstart+pr;let f=h[s+o-1],p=h[s+o];e.prev_length>=e.good_match&&(r>>=2),a>e.lookahead&&(a=e.lookahead);do{if(i=t,h[i+o]===p&&h[i+o-1]===f&&h[i]===h[s]&&h[++i]===h[s+1]){s+=2,i++;do{}while(h[++s]===h[++i]&&h[++s]===h[++i]&&h[++s]===h[++i]&&h[++s]===h[++i]&&h[++s]===h[++i]&&h[++s]===h[++i]&&h[++s]===h[++i]&&h[++s]===h[++i]&&s<u);if(n=pr-(u-s),s=u-pr,n>o){if(e.match_start=t,o=n,n>=a)break;f=h[s+o-1],p=h[s+o]}}}while((t=d[t&c])>l&&0!=--r);return o<=e.lookahead?o:e.lookahead},Rr=e=>{const t=e.w_size;let i,n,r;do{if(n=e.window_size-e.lookahead-e.strstart,e.strstart>=t+(t-gr)&&(e.window.set(e.window.subarray(t,t+t-n),0),e.match_start-=t,e.strstart-=t,e.block_start-=t,e.insert>e.strstart&&(e.insert=e.strstart),xr(e),n+=t),0===e.strm.avail_in)break;if(i=Tr(e.strm,e.window,e.strstart+e.lookahead,n),e.lookahead+=i,e.lookahead+e.insert>=3)for(r=e.strstart-e.insert,e.ins_h=e.window[r],e.ins_h=kr(e,e.ins_h,e.window[r+1]);e.insert&&(e.ins_h=kr(e,e.ins_h,e.window[r+3-1]),e.prev[r&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=r,r++,e.insert--,!(e.lookahead+e.insert<3)););}while(e.lookahead<gr&&0!==e.strm.avail_in)},Lr=(e,t)=>{let i,n,r,s=e.pending_buf_size-5>e.w_size?e.w_size:e.pending_buf_size-5,o=0,a=e.strm.avail_in;do{if(i=65535,r=e.bi_valid+42>>3,e.strm.avail_out<r)break;if(r=e.strm.avail_out-r,n=e.strstart-e.block_start,i>n+e.strm.avail_in&&(i=n+e.strm.avail_in),i>r&&(i=r),i<s&&(0===i&&t!==Jn||t===Xn||i!==n+e.strm.avail_in))break;o=t===Jn&&i===n+e.strm.avail_in?1:0,Wn(e,0,0,o),e.pending_buf[e.pending-4]=i,e.pending_buf[e.pending-3]=i>>8,e.pending_buf[e.pending-2]=~i,e.pending_buf[e.pending-1]=~i>>8,Cr(e.strm),n&&(n>i&&(n=i),e.strm.output.set(e.window.subarray(e.block_start,e.block_start+n),e.strm.next_out),e.strm.next_out+=n,e.strm.avail_out-=n,e.strm.total_out+=n,e.block_start+=n,i-=n),i&&(Tr(e.strm,e.strm.output,e.strm.next_out,i),e.strm.next_out+=i,e.strm.avail_out-=i,e.strm.total_out+=i)}while(0===o);return a-=e.strm.avail_in,a&&(a>=e.w_size?(e.matches=2,e.window.set(e.strm.input.subarray(e.strm.next_in-e.w_size,e.strm.next_in),0),e.strstart=e.w_size,e.insert=e.strstart):(e.window_size-e.strstart<=a&&(e.strstart-=e.w_size,e.window.set(e.window.subarray(e.w_size,e.w_size+e.strstart),0),e.matches<2&&e.matches++,e.insert>e.strstart&&(e.insert=e.strstart)),e.window.set(e.strm.input.subarray(e.strm.next_in-a,e.strm.next_in),e.strstart),e.strstart+=a,e.insert+=a>e.w_size-e.insert?e.w_size-e.insert:a),e.block_start=e.strstart),e.high_water<e.strstart&&(e.high_water=e.strstart),o?4:t!==Xn&&t!==Jn&&0===e.strm.avail_in&&e.strstart===e.block_start?2:(r=e.window_size-e.strstart,e.strm.avail_in>r&&e.block_start>=e.w_size&&(e.block_start-=e.w_size,e.strstart-=e.w_size,e.window.set(e.window.subarray(e.w_size,e.w_size+e.strstart),0),e.matches<2&&e.matches++,r+=e.w_size,e.insert>e.strstart&&(e.insert=e.strstart)),r>e.strm.avail_in&&(r=e.strm.avail_in),r&&(Tr(e.strm,e.window,e.strstart,r),e.strstart+=r,e.insert+=r>e.w_size-e.insert?e.w_size-e.insert:r),e.high_water<e.strstart&&(e.high_water=e.strstart),r=e.bi_valid+42>>3,r=e.pending_buf_size-r>65535?65535:e.pending_buf_size-r,s=r>e.w_size?e.w_size:r,n=e.strstart-e.block_start,(n>=s||(n||t===Jn)&&t!==Xn&&0===e.strm.avail_in&&n<=r)&&(i=n>r?r:n,o=t===Jn&&0===e.strm.avail_in&&i===n?1:0,Wn(e,e.block_start,i,o),e.block_start+=i,Cr(e.strm)),o?3:1)},Ir=(e,t)=>{let i,n;for(;;){if(e.lookahead<gr){if(Rr(e),e.lookahead<gr&&t===Xn)return 1;if(0===e.lookahead)break}if(i=0,e.lookahead>=3&&(e.ins_h=kr(e,e.ins_h,e.window[e.strstart+3-1]),i=e.prev[e.strstart&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=e.strstart),0!==i&&e.strstart-i<=e.w_size-gr&&(e.match_length=Mr(e,i)),e.match_length>=3)if(n=Zn(e,e.strstart-e.match_start,e.match_length-3),e.lookahead-=e.match_length,e.match_length<=e.max_lazy_match&&e.lookahead>=3){e.match_length--;do{e.strstart++,e.ins_h=kr(e,e.ins_h,e.window[e.strstart+3-1]),i=e.prev[e.strstart&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=e.strstart}while(0!=--e.match_length);e.strstart++}else e.strstart+=e.match_length,e.match_length=0,e.ins_h=e.window[e.strstart],e.ins_h=kr(e,e.ins_h,e.window[e.strstart+1]);else n=Zn(e,0,e.window[e.strstart]),e.lookahead--,e.strstart++;if(n&&(Sr(e,!1),0===e.strm.avail_out))return 1}return e.insert=e.strstart<2?e.strstart:2,t===Jn?(Sr(e,!0),0===e.strm.avail_out?3:4):e.sym_next&&(Sr(e,!1),0===e.strm.avail_out)?1:2},Nr=(e,t)=>{let i,n,r;for(;;){if(e.lookahead<gr){if(Rr(e),e.lookahead<gr&&t===Xn)return 1;if(0===e.lookahead)break}if(i=0,e.lookahead>=3&&(e.ins_h=kr(e,e.ins_h,e.window[e.strstart+3-1]),i=e.prev[e.strstart&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=e.strstart),e.prev_length=e.match_length,e.prev_match=e.match_start,e.match_length=2,0!==i&&e.prev_length<e.max_lazy_match&&e.strstart-i<=e.w_size-gr&&(e.match_length=Mr(e,i),e.match_length<=5&&(e.strategy===ar||3===e.match_length&&e.strstart-e.match_start>4096)&&(e.match_length=2)),e.prev_length>=3&&e.match_length<=e.prev_length){r=e.strstart+e.lookahead-3,n=Zn(e,e.strstart-1-e.prev_match,e.prev_length-3),e.lookahead-=e.prev_length-1,e.prev_length-=2;do{++e.strstart<=r&&(e.ins_h=kr(e,e.ins_h,e.window[e.strstart+3-1]),i=e.prev[e.strstart&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=e.strstart)}while(0!=--e.prev_length);if(e.match_available=0,e.match_length=2,e.strstart++,n&&(Sr(e,!1),0===e.strm.avail_out))return 1}else if(e.match_available){if(n=Zn(e,0,e.window[e.strstart-1]),n&&Sr(e,!1),e.strstart++,e.lookahead--,0===e.strm.avail_out)return 1}else e.match_available=1,e.strstart++,e.lookahead--}return e.match_available&&(n=Zn(e,0,e.window[e.strstart-1]),e.match_available=0),e.insert=e.strstart<2?e.strstart:2,t===Jn?(Sr(e,!0),0===e.strm.avail_out?3:4):e.sym_next&&(Sr(e,!1),0===e.strm.avail_out)?1:2};function Fr(e,t,i,n,r){this.good_length=e,this.max_lazy=t,this.nice_length=i,this.max_chain=n,this.func=r}const Br=[new Fr(0,0,0,0,Lr),new Fr(4,4,8,4,Ir),new Fr(4,5,16,8,Ir),new Fr(4,6,32,32,Ir),new Fr(4,4,16,16,Nr),new Fr(8,16,32,32,Nr),new Fr(8,16,128,128,Nr),new Fr(8,32,128,256,Nr),new Fr(32,128,258,1024,Nr),new Fr(32,258,258,4096,Nr)];function Or(){this.strm=null,this.status=0,this.pending_buf=null,this.pending_buf_size=0,this.pending_out=0,this.pending=0,this.wrap=0,this.gzhead=null,this.gzindex=0,this.method=fr,this.last_flush=-1,this.w_size=0,this.w_bits=0,this.w_mask=0,this.window=null,this.window_size=0,this.prev=null,this.head=null,this.ins_h=0,this.hash_size=0,this.hash_bits=0,this.hash_mask=0,this.hash_shift=0,this.block_start=0,this.match_length=0,this.prev_match=0,this.match_available=0,this.strstart=0,this.match_start=0,this.lookahead=0,this.prev_length=0,this.max_chain_length=0,this.max_lazy_match=0,this.level=0,this.strategy=0,this.good_match=0,this.nice_match=0,this.dyn_ltree=new Uint16Array(1146),this.dyn_dtree=new Uint16Array(122),this.bl_tree=new Uint16Array(78),_r(this.dyn_ltree),_r(this.dyn_dtree),_r(this.bl_tree),this.l_desc=null,this.d_desc=null,this.bl_desc=null,this.bl_count=new Uint16Array(16),this.heap=new Uint16Array(573),_r(this.heap),this.heap_len=0,this.heap_max=0,this.depth=new Uint16Array(573),_r(this.depth),this.sym_buf=0,this.lit_bufsize=0,this.sym_next=0,this.sym_end=0,this.opt_len=0,this.static_len=0,this.matches=0,this.insert=0,this.bi_buf=0,this.bi_valid=0}const Dr=e=>{if(!e)return 1;const t=e.state;return!t||t.strm!==e||t.status!==mr&&57!==t.status&&69!==t.status&&73!==t.status&&91!==t.status&&103!==t.status&&t.status!==br&&t.status!==wr?1:0},Pr=e=>{if(Dr(e))return vr(e,nr);e.total_in=e.total_out=0,e.data_type=ur;const t=e.state;return t.pending=0,t.pending_out=0,t.wrap<0&&(t.wrap=-t.wrap),t.status=2===t.wrap?57:t.wrap?mr:br,e.adler=2===t.wrap?0:1,t.last_flush=-2,$n(t),tr},zr=e=>{const t=Pr(e);var i;return t===tr&&((i=e.state).window_size=2*i.w_size,_r(i.head),i.max_lazy_match=Br[i.level].max_lazy,i.good_match=Br[i.level].good_length,i.nice_match=Br[i.level].nice_length,i.max_chain_length=Br[i.level].max_chain,i.strstart=0,i.block_start=0,i.lookahead=0,i.insert=0,i.match_length=i.prev_length=2,i.match_available=0,i.ins_h=0),t},Hr=(e,t,i,n,r,s)=>{if(!e)return nr;let o=1;if(t===or&&(t=6),n<0?(o=0,n=-n):n>15&&(o=2,n-=16),r<1||r>9||i!==fr||n<8||n>15||t<0||t>9||s<0||s>cr||8===n&&1!==o)return vr(e,nr);8===n&&(n=9);const a=new Or;return e.state=a,a.strm=e,a.status=mr,a.wrap=o,a.gzhead=null,a.w_bits=n,a.w_size=1<<a.w_bits,a.w_mask=a.w_size-1,a.hash_bits=r+7,a.hash_size=1<<a.hash_bits,a.hash_mask=a.hash_size-1,a.hash_shift=~~((a.hash_bits+3-1)/3),a.window=new Uint8Array(2*a.w_size),a.head=new Uint16Array(a.hash_size),a.prev=new Uint16Array(a.w_size),a.lit_bufsize=1<<r+6,a.pending_buf_size=4*a.lit_bufsize,a.pending_buf=new Uint8Array(a.pending_buf_size),a.sym_buf=a.lit_bufsize,a.sym_end=3*(a.lit_bufsize-1),a.level=t,a.strategy=s,a.method=i,zr(e)};var Ur=(e,t)=>{let i=t.length;if(Dr(e))return nr;const n=e.state,r=n.wrap;if(2===r||1===r&&n.status!==mr||n.lookahead)return nr;if(1===r&&(e.adler=Hn(e.adler,t,i,0)),n.wrap=0,i>=n.w_size){0===r&&(_r(n.head),n.strstart=0,n.block_start=0,n.insert=0);let e=new Uint8Array(n.w_size);e.set(t.subarray(i-n.w_size,i),0),t=e,i=n.w_size}const s=e.avail_in,o=e.next_in,a=e.input;for(e.avail_in=i,e.next_in=0,e.input=t,Rr(n);n.lookahead>=3;){let e=n.strstart,t=n.lookahead-2;do{n.ins_h=kr(n,n.ins_h,n.window[e+3-1]),n.prev[e&n.w_mask]=n.head[n.ins_h],n.head[n.ins_h]=e,e++}while(--t);n.strstart=e,n.lookahead=2,Rr(n)}return n.strstart+=n.lookahead,n.block_start=n.strstart,n.insert=n.lookahead,n.lookahead=0,n.match_length=n.prev_length=2,n.match_available=0,e.next_in=o,e.input=a,e.avail_in=s,n.wrap=r,tr},Vr={deflateInit:(e,t)=>Hr(e,t,fr,15,8,dr),deflateInit2:Hr,deflateReset:zr,deflateResetKeep:Pr,deflateSetHeader:(e,t)=>Dr(e)||2!==e.state.wrap?nr:(e.state.gzhead=t,tr),deflate:(e,t)=>{if(Dr(e)||t>er||t<0)return e?vr(e,nr):nr;const i=e.state;if(!e.output||0!==e.avail_in&&!e.input||i.status===wr&&t!==Jn)return vr(e,0===e.avail_out?sr:nr);const n=i.last_flush;if(i.last_flush=t,0!==i.pending){if(Cr(e),0===e.avail_out)return i.last_flush=-1,tr}else if(0===e.avail_in&&yr(t)<=yr(n)&&t!==Jn)return vr(e,sr);if(i.status===wr&&0!==e.avail_in)return vr(e,sr);if(i.status===mr&&0===i.wrap&&(i.status=br),i.status===mr){let t=fr+(i.w_bits-8<<4)<<8,n=-1;if(n=i.strategy>=lr||i.level<2?0:i.level<6?1:6===i.level?2:3,t|=n<<6,0!==i.strstart&&(t|=32),t+=31-t%31,Er(i,t),0!==i.strstart&&(Er(i,e.adler>>>16),Er(i,65535&e.adler)),e.adler=1,i.status=br,Cr(e),0!==i.pending)return i.last_flush=-1,tr}if(57===i.status)if(e.adler=0,Ar(i,31),Ar(i,139),Ar(i,8),i.gzhead)Ar(i,(i.gzhead.text?1:0)+(i.gzhead.hcrc?2:0)+(i.gzhead.extra?4:0)+(i.gzhead.name?8:0)+(i.gzhead.comment?16:0)),Ar(i,255&i.gzhead.time),Ar(i,i.gzhead.time>>8&255),Ar(i,i.gzhead.time>>16&255),Ar(i,i.gzhead.time>>24&255),Ar(i,9===i.level?2:i.strategy>=lr||i.level<2?4:0),Ar(i,255&i.gzhead.os),i.gzhead.extra&&i.gzhead.extra.length&&(Ar(i,255&i.gzhead.extra.length),Ar(i,i.gzhead.extra.length>>8&255)),i.gzhead.hcrc&&(e.adler=Vn(e.adler,i.pending_buf,i.pending,0)),i.gzindex=0,i.status=69;else if(Ar(i,0),Ar(i,0),Ar(i,0),Ar(i,0),Ar(i,0),Ar(i,9===i.level?2:i.strategy>=lr||i.level<2?4:0),Ar(i,3),i.status=br,Cr(e),0!==i.pending)return i.last_flush=-1,tr;if(69===i.status){if(i.gzhead.extra){let t=i.pending,n=(65535&i.gzhead.extra.length)-i.gzindex;for(;i.pending+n>i.pending_buf_size;){let r=i.pending_buf_size-i.pending;if(i.pending_buf.set(i.gzhead.extra.subarray(i.gzindex,i.gzindex+r),i.pending),i.pending=i.pending_buf_size,i.gzhead.hcrc&&i.pending>t&&(e.adler=Vn(e.adler,i.pending_buf,i.pending-t,t)),i.gzindex+=r,Cr(e),0!==i.pending)return i.last_flush=-1,tr;t=0,n-=r}let r=new Uint8Array(i.gzhead.extra);i.pending_buf.set(r.subarray(i.gzindex,i.gzindex+n),i.pending),i.pending+=n,i.gzhead.hcrc&&i.pending>t&&(e.adler=Vn(e.adler,i.pending_buf,i.pending-t,t)),i.gzindex=0}i.status=73}if(73===i.status){if(i.gzhead.name){let t,n=i.pending;do{if(i.pending===i.pending_buf_size){if(i.gzhead.hcrc&&i.pending>n&&(e.adler=Vn(e.adler,i.pending_buf,i.pending-n,n)),Cr(e),0!==i.pending)return i.last_flush=-1,tr;n=0}t=i.gzindex<i.gzhead.name.length?255&i.gzhead.name.charCodeAt(i.gzindex++):0,Ar(i,t)}while(0!==t);i.gzhead.hcrc&&i.pending>n&&(e.adler=Vn(e.adler,i.pending_buf,i.pending-n,n)),i.gzindex=0}i.status=91}if(91===i.status){if(i.gzhead.comment){let t,n=i.pending;do{if(i.pending===i.pending_buf_size){if(i.gzhead.hcrc&&i.pending>n&&(e.adler=Vn(e.adler,i.pending_buf,i.pending-n,n)),Cr(e),0!==i.pending)return i.last_flush=-1,tr;n=0}t=i.gzindex<i.gzhead.comment.length?255&i.gzhead.comment.charCodeAt(i.gzindex++):0,Ar(i,t)}while(0!==t);i.gzhead.hcrc&&i.pending>n&&(e.adler=Vn(e.adler,i.pending_buf,i.pending-n,n))}i.status=103}if(103===i.status){if(i.gzhead.hcrc){if(i.pending+2>i.pending_buf_size&&(Cr(e),0!==i.pending))return i.last_flush=-1,tr;Ar(i,255&e.adler),Ar(i,e.adler>>8&255),e.adler=0}if(i.status=br,Cr(e),0!==i.pending)return i.last_flush=-1,tr}if(0!==e.avail_in||0!==i.lookahead||t!==Xn&&i.status!==wr){let n=0===i.level?Lr(i,t):i.strategy===lr?((e,t)=>{let i;for(;;){if(0===e.lookahead&&(Rr(e),0===e.lookahead)){if(t===Xn)return 1;break}if(e.match_length=0,i=Zn(e,0,e.window[e.strstart]),e.lookahead--,e.strstart++,i&&(Sr(e,!1),0===e.strm.avail_out))return 1}return e.insert=0,t===Jn?(Sr(e,!0),0===e.strm.avail_out?3:4):e.sym_next&&(Sr(e,!1),0===e.strm.avail_out)?1:2})(i,t):i.strategy===hr?((e,t)=>{let i,n,r,s;const o=e.window;for(;;){if(e.lookahead<=pr){if(Rr(e),e.lookahead<=pr&&t===Xn)return 1;if(0===e.lookahead)break}if(e.match_length=0,e.lookahead>=3&&e.strstart>0&&(r=e.strstart-1,n=o[r],n===o[++r]&&n===o[++r]&&n===o[++r])){s=e.strstart+pr;do{}while(n===o[++r]&&n===o[++r]&&n===o[++r]&&n===o[++r]&&n===o[++r]&&n===o[++r]&&n===o[++r]&&n===o[++r]&&r<s);e.match_length=pr-(s-r),e.match_length>e.lookahead&&(e.match_length=e.lookahead)}if(e.match_length>=3?(i=Zn(e,1,e.match_length-3),e.lookahead-=e.match_length,e.strstart+=e.match_length,e.match_length=0):(i=Zn(e,0,e.window[e.strstart]),e.lookahead--,e.strstart++),i&&(Sr(e,!1),0===e.strm.avail_out))return 1}return e.insert=0,t===Jn?(Sr(e,!0),0===e.strm.avail_out?3:4):e.sym_next&&(Sr(e,!1),0===e.strm.avail_out)?1:2})(i,t):Br[i.level].func(i,t);if(3!==n&&4!==n||(i.status=wr),1===n||3===n)return 0===e.avail_out&&(i.last_flush=-1),tr;if(2===n&&(t===Yn?Qn(i):t!==er&&(Wn(i,0,0,!1),t===Kn&&(_r(i.head),0===i.lookahead&&(i.strstart=0,i.block_start=0,i.insert=0))),Cr(e),0===e.avail_out))return i.last_flush=-1,tr}return t!==Jn?tr:i.wrap<=0?ir:(2===i.wrap?(Ar(i,255&e.adler),Ar(i,e.adler>>8&255),Ar(i,e.adler>>16&255),Ar(i,e.adler>>24&255),Ar(i,255&e.total_in),Ar(i,e.total_in>>8&255),Ar(i,e.total_in>>16&255),Ar(i,e.total_in>>24&255)):(Er(i,e.adler>>>16),Er(i,65535&e.adler)),Cr(e),i.wrap>0&&(i.wrap=-i.wrap),0!==i.pending?tr:ir)},deflateEnd:e=>{if(Dr(e))return nr;const t=e.state.status;return e.state=null,t===br?vr(e,rr):tr},deflateSetDictionary:Ur,deflateInfo:"pako deflate (from Nodeca project)"};const qr=(e,t)=>Object.prototype.hasOwnProperty.call(e,t);var jr={assign:function(e){const t=Array.prototype.slice.call(arguments,1);for(;t.length;){const i=t.shift();if(i){if("object"!=typeof i)throw new TypeError(i+"must be non-object");for(const t in i)qr(i,t)&&(e[t]=i[t])}}return e},flattenChunks:e=>{let t=0;for(let i=0,n=e.length;i<n;i++)t+=e[i].length;const i=new Uint8Array(t);for(let t=0,n=0,r=e.length;t<r;t++){let r=e[t];i.set(r,n),n+=r.length}return i}};let $r=!0;try{String.fromCharCode.apply(null,new 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Qr=Object.prototype.toString,{Z_NO_FLUSH:Xr,Z_SYNC_FLUSH:Yr,Z_FULL_FLUSH:Kr,Z_FINISH:Jr,Z_OK:es,Z_STREAM_END:ts,Z_DEFAULT_COMPRESSION:is,Z_DEFAULT_STRATEGY:ns,Z_DEFLATED:rs}=jn;function ss(e){this.options=jr.assign({level:is,method:rs,chunkSize:16384,windowBits:15,memLevel:8,strategy:ns},e||{});let t=this.options;t.raw&&t.windowBits>0?t.windowBits=-t.windowBits:t.gzip&&t.windowBits>0&&t.windowBits<16&&(t.windowBits+=16),this.err=0,this.msg="",this.ended=!1,this.chunks=[],this.strm=new Zr,this.strm.avail_out=0;let i=Vr.deflateInit2(this.strm,t.level,t.method,t.windowBits,t.memLevel,t.strategy);if(i!==es)throw new Error(qn[i]);if(t.header&&Vr.deflateSetHeader(this.strm,t.header),t.dictionary){let e;if(e="string"==typeof t.dictionary?Gr.string2buf(t.dictionary):"[object ArrayBuffer]"===Qr.call(t.dictionary)?new Uint8Array(t.dictionary):t.dictionary,i=Vr.deflateSetDictionary(this.strm,e),i!==es)throw new Error(qn[i]);this._dict_set=!0}}function os(e,t){const i=new ss(t);if(i.push(e,!0),i.err)throw i.msg||qn[i.err];return i.result}ss.prototype.push=function(e,t){const i=this.strm,n=this.options.chunkSize;let r,s;if(this.ended)return!1;for(s=t===~~t?t:!0===t?Jr:Xr,"string"==typeof e?i.input=Gr.string2buf(e):"[object ArrayBuffer]"===Qr.call(e)?i.input=new Uint8Array(e):i.input=e,i.next_in=0,i.avail_in=i.input.length;;)if(0===i.avail_out&&(i.output=new Uint8Array(n),i.next_out=0,i.avail_out=n),(s===Yr||s===Kr)&&i.avail_out<=6)this.onData(i.output.subarray(0,i.next_out)),i.avail_out=0;else{if(r=Vr.deflate(i,s),r===ts)return i.next_out>0&&this.onData(i.output.subarray(0,i.next_out)),r=Vr.deflateEnd(this.strm),this.onEnd(r),this.ended=!0,r===es;if(0!==i.avail_out){if(s>0&&i.next_out>0)this.onData(i.output.subarray(0,i.next_out)),i.avail_out=0;else if(0===i.avail_in)break}else this.onData(i.output)}return!0},ss.prototype.onData=function(e){this.chunks.push(e)},ss.prototype.onEnd=function(e){e===es&&(this.result=jr.flattenChunks(this.chunks)),this.chunks=[],this.err=e,this.msg=this.strm.msg};var as=function(e,t){return(t=t||{}).raw=!0,os(e,t)},ls=function(e,t){return(t=t||{}).gzip=!0,os(e,t)},hs={Deflate:ss,deflate:os,deflateRaw:as,gzip:ls,constants:jn};const cs=16209;var ds=function(e,t){let i,n,r,s,o,a,l,h,c,d,u,f,p,g,m,b,w,v,y,_,x,k,C,S;const A=e.state;i=e.next_in,C=e.input,n=i+(e.avail_in-5),r=e.next_out,S=e.output,s=r-(t-e.avail_out),o=r+(e.avail_out-257),a=A.dmax,l=A.wsize,h=A.whave,c=A.wnext,d=A.window,u=A.hold,f=A.bits,p=A.lencode,g=A.distcode,m=(1<<A.lenbits)-1,b=(1<<A.distbits)-1;e:do{f<15&&(u+=C[i++]<<f,f+=8,u+=C[i++]<<f,f+=8),w=p[u&m];t:for(;;){if(v=w>>>24,u>>>=v,f-=v,v=w>>>16&255,0===v)S[r++]=65535&w;else{if(!(16&v)){if(0==(64&v)){w=p[(65535&w)+(u&(1<<v)-1)];continue t}if(32&v){A.mode=16191;break e}e.msg="invalid literal/length code",A.mode=cs;break e}y=65535&w,v&=15,v&&(f<v&&(u+=C[i++]<<f,f+=8),y+=u&(1<<v)-1,u>>>=v,f-=v),f<15&&(u+=C[i++]<<f,f+=8,u+=C[i++]<<f,f+=8),w=g[u&b];i:for(;;){if(v=w>>>24,u>>>=v,f-=v,v=w>>>16&255,!(16&v)){if(0==(64&v)){w=g[(65535&w)+(u&(1<<v)-1)];continue i}e.msg="invalid distance code",A.mode=cs;break e}if(_=65535&w,v&=15,f<v&&(u+=C[i++]<<f,f+=8,f<v&&(u+=C[i++]<<f,f+=8)),_+=u&(1<<v)-1,_>a){e.msg="invalid distance too far back",A.mode=cs;break e}if(u>>>=v,f-=v,v=r-s,_>v){if(v=_-v,v>h&&A.sane){e.msg="invalid distance too far back",A.mode=cs;break e}if(x=0,k=d,0===c){if(x+=l-v,v<y){y-=v;do{S[r++]=d[x++]}while(--v);x=r-_,k=S}}else if(c<v){if(x+=l+c-v,v-=c,v<y){y-=v;do{S[r++]=d[x++]}while(--v);if(x=0,c<y){v=c,y-=v;do{S[r++]=d[x++]}while(--v);x=r-_,k=S}}}else if(x+=c-v,v<y){y-=v;do{S[r++]=d[x++]}while(--v);x=r-_,k=S}for(;y>2;)S[r++]=k[x++],S[r++]=k[x++],S[r++]=k[x++],y-=3;y&&(S[r++]=k[x++],y>1&&(S[r++]=k[x++]))}else{x=r-_;do{S[r++]=S[x++],S[r++]=S[x++],S[r++]=S[x++],y-=3}while(y>2);y&&(S[r++]=S[x++],y>1&&(S[r++]=S[x++]))}break}}break}}while(i<n&&r<o);y=f>>3,i-=y,f-=y<<3,u&=(1<<f)-1,e.next_in=i,e.next_out=r,e.avail_in=i<n?n-i+5:5-(i-n),e.avail_out=r<o?o-r+257:257-(r-o),A.hold=u,A.bits=f};const us=15,fs=new Uint16Array([3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0]),ps=new Uint8Array([16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78]),gs=new Uint16Array([1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0]),ms=new Uint8Array([16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64]);var bs=(e,t,i,n,r,s,o,a)=>{const l=a.bits;let h,c,d,u,f,p,g=0,m=0,b=0,w=0,v=0,y=0,_=0,x=0,k=0,C=0,S=null;const A=new Uint16Array(16),E=new Uint16Array(16);let T,M,R,L=null;for(g=0;g<=us;g++)A[g]=0;for(m=0;m<n;m++)A[t[i+m]]++;for(v=l,w=us;w>=1&&0===A[w];w--);if(v>w&&(v=w),0===w)return r[s++]=20971520,r[s++]=20971520,a.bits=1,0;for(b=1;b<w&&0===A[b];b++);for(v<b&&(v=b),x=1,g=1;g<=us;g++)if(x<<=1,x-=A[g],x<0)return-1;if(x>0&&(0===e||1!==w))return-1;for(E[1]=0,g=1;g<us;g++)E[g+1]=E[g]+A[g];for(m=0;m<n;m++)0!==t[i+m]&&(o[E[t[i+m]]++]=m);if(0===e?(S=L=o,p=20):1===e?(S=fs,L=ps,p=257):(S=gs,L=ms,p=0),C=0,m=0,g=b,f=s,y=v,_=0,d=-1,k=1<<v,u=k-1,1===e&&k>852||2===e&&k>592)return 1;for(;;){T=g-_,o[m]+1<p?(M=0,R=o[m]):o[m]>=p?(M=L[o[m]-p],R=S[o[m]-p]):(M=96,R=0),h=1<<g-_,c=1<<y,b=c;do{c-=h,r[f+(C>>_)+c]=T<<24|M<<16|R|0}while(0!==c);for(h=1<<g-1;C&h;)h>>=1;if(0!==h?(C&=h-1,C+=h):C=0,m++,0==--A[g]){if(g===w)break;g=t[i+o[m]]}if(g>v&&(C&u)!==d){for(0===_&&(_=v),f+=b,y=g-_,x=1<<y;y+_<w&&(x-=A[y+_],!(x<=0));)y++,x<<=1;if(k+=1<<y,1===e&&k>852||2===e&&k>592)return 1;d=C&u,r[d]=v<<24|y<<16|f-s|0}}return 0!==C&&(r[f+C]=g-_<<24|64<<16|0),a.bits=v,0};const{Z_FINISH:ws,Z_BLOCK:vs,Z_TREES:ys,Z_OK:_s,Z_STREAM_END:xs,Z_NEED_DICT:ks,Z_STREAM_ERROR:Cs,Z_DATA_ERROR:Ss,Z_MEM_ERROR:As,Z_BUF_ERROR:Es,Z_DEFLATED:Ts}=jn,Ms=16180,Rs=16190,Ls=16191,Is=16192,Ns=16194,Fs=16199,Bs=16200,Os=16206,Ds=16209,Ps=e=>(e>>>24&255)+(e>>>8&65280)+((65280&e)<<8)+((255&e)<<24);function zs(){this.strm=null,this.mode=0,this.last=!1,this.wrap=0,this.havedict=!1,this.flags=0,this.dmax=0,this.check=0,this.total=0,this.head=null,this.wbits=0,this.wsize=0,this.whave=0,this.wnext=0,this.window=null,this.hold=0,this.bits=0,this.length=0,this.offset=0,this.extra=0,this.lencode=null,this.distcode=null,this.lenbits=0,this.distbits=0,this.ncode=0,this.nlen=0,this.ndist=0,this.have=0,this.next=null,this.lens=new Uint16Array(320),this.work=new Uint16Array(288),this.lendyn=null,this.distdyn=null,this.sane=0,this.back=0,this.was=0}const Hs=e=>{if(!e)return 1;const t=e.state;return!t||t.strm!==e||t.mode<Ms||t.mode>16211?1:0},Us=e=>{if(Hs(e))return Cs;const t=e.state;return e.total_in=e.total_out=t.total=0,e.msg="",t.wrap&&(e.adler=1&t.wrap),t.mode=Ms,t.last=0,t.havedict=0,t.flags=-1,t.dmax=32768,t.head=null,t.hold=0,t.bits=0,t.lencode=t.lendyn=new Int32Array(852),t.distcode=t.distdyn=new Int32Array(592),t.sane=1,t.back=-1,_s},Vs=e=>{if(Hs(e))return Cs;const t=e.state;return t.wsize=0,t.whave=0,t.wnext=0,Us(e)},qs=(e,t)=>{let i;if(Hs(e))return Cs;const n=e.state;return t<0?(i=0,t=-t):(i=5+(t>>4),t<48&&(t&=15)),t&&(t<8||t>15)?Cs:(null!==n.window&&n.wbits!==t&&(n.window=null),n.wrap=i,n.wbits=t,Vs(e))},js=(e,t)=>{if(!e)return Cs;const i=new zs;e.state=i,i.strm=e,i.window=null,i.mode=Ms;const n=qs(e,t);return n!==_s&&(e.state=null),n};let $s,Ws,Gs=!0;const Zs=e=>{if(Gs){$s=new Int32Array(512),Ws=new Int32Array(32);let t=0;for(;t<144;)e.lens[t++]=8;for(;t<256;)e.lens[t++]=9;for(;t<280;)e.lens[t++]=7;for(;t<288;)e.lens[t++]=8;for(bs(1,e.lens,0,288,$s,0,e.work,{bits:9}),t=0;t<32;)e.lens[t++]=5;bs(2,e.lens,0,32,Ws,0,e.work,{bits:5}),Gs=!1}e.lencode=$s,e.lenbits=9,e.distcode=Ws,e.distbits=5},Qs=(e,t,i,n)=>{let r;const s=e.state;return null===s.window&&(s.wsize=1<<s.wbits,s.wnext=0,s.whave=0,s.window=new Uint8Array(s.wsize)),n>=s.wsize?(s.window.set(t.subarray(i-s.wsize,i),0),s.wnext=0,s.whave=s.wsize):(r=s.wsize-s.wnext,r>n&&(r=n),s.window.set(t.subarray(i-n,i-n+r),s.wnext),(n-=r)?(s.window.set(t.subarray(i-n,i),0),s.wnext=n,s.whave=s.wsize):(s.wnext+=r,s.wnext===s.wsize&&(s.wnext=0),s.whave<s.wsize&&(s.whave+=r))),0};var Xs=(e,t)=>{let i,n,r,s,o,a,l,h,c,d,u,f,p,g,m,b,w,v,y,_,x,k,C=0;const S=new Uint8Array(4);let A,E;const T=new Uint8Array([16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]);if(Hs(e)||!e.output||!e.input&&0!==e.avail_in)return Cs;i=e.state,i.mode===Ls&&(i.mode=Is),o=e.next_out,r=e.output,l=e.avail_out,s=e.next_in,n=e.input,a=e.avail_in,h=i.hold,c=i.bits,d=a,u=l,k=_s;e:for(;;)switch(i.mode){case Ms:if(0===i.wrap){i.mode=Is;break}for(;c<16;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(2&i.wrap&&35615===h){0===i.wbits&&(i.wbits=15),i.check=0,S[0]=255&h,S[1]=h>>>8&255,i.check=Vn(i.check,S,2,0),h=0,c=0,i.mode=16181;break}if(i.head&&(i.head.done=!1),!(1&i.wrap)||(((255&h)<<8)+(h>>8))%31){e.msg="incorrect header check",i.mode=Ds;break}if((15&h)!==Ts){e.msg="unknown compression method",i.mode=Ds;break}if(h>>>=4,c-=4,x=8+(15&h),0===i.wbits&&(i.wbits=x),x>15||x>i.wbits){e.msg="invalid window size",i.mode=Ds;break}i.dmax=1<<i.wbits,i.flags=0,e.adler=i.check=1,i.mode=512&h?16189:Ls,h=0,c=0;break;case 16181:for(;c<16;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(i.flags=h,(255&i.flags)!==Ts){e.msg="unknown compression method",i.mode=Ds;break}if(57344&i.flags){e.msg="unknown header flags set",i.mode=Ds;break}i.head&&(i.head.text=h>>8&1),512&i.flags&&4&i.wrap&&(S[0]=255&h,S[1]=h>>>8&255,i.check=Vn(i.check,S,2,0)),h=0,c=0,i.mode=16182;case 16182:for(;c<32;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}i.head&&(i.head.time=h),512&i.flags&&4&i.wrap&&(S[0]=255&h,S[1]=h>>>8&255,S[2]=h>>>16&255,S[3]=h>>>24&255,i.check=Vn(i.check,S,4,0)),h=0,c=0,i.mode=16183;case 16183:for(;c<16;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}i.head&&(i.head.xflags=255&h,i.head.os=h>>8),512&i.flags&&4&i.wrap&&(S[0]=255&h,S[1]=h>>>8&255,i.check=Vn(i.check,S,2,0)),h=0,c=0,i.mode=16184;case 16184:if(1024&i.flags){for(;c<16;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}i.length=h,i.head&&(i.head.extra_len=h),512&i.flags&&4&i.wrap&&(S[0]=255&h,S[1]=h>>>8&255,i.check=Vn(i.check,S,2,0)),h=0,c=0}else i.head&&(i.head.extra=null);i.mode=16185;case 16185:if(1024&i.flags&&(f=i.length,f>a&&(f=a),f&&(i.head&&(x=i.head.extra_len-i.length,i.head.extra||(i.head.extra=new Uint8Array(i.head.extra_len)),i.head.extra.set(n.subarray(s,s+f),x)),512&i.flags&&4&i.wrap&&(i.check=Vn(i.check,n,f,s)),a-=f,s+=f,i.length-=f),i.length))break e;i.length=0,i.mode=16186;case 16186:if(2048&i.flags){if(0===a)break e;f=0;do{x=n[s+f++],i.head&&x&&i.length<65536&&(i.head.name+=String.fromCharCode(x))}while(x&&f<a);if(512&i.flags&&4&i.wrap&&(i.check=Vn(i.check,n,f,s)),a-=f,s+=f,x)break e}else i.head&&(i.head.name=null);i.length=0,i.mode=16187;case 16187:if(4096&i.flags){if(0===a)break e;f=0;do{x=n[s+f++],i.head&&x&&i.length<65536&&(i.head.comment+=String.fromCharCode(x))}while(x&&f<a);if(512&i.flags&&4&i.wrap&&(i.check=Vn(i.check,n,f,s)),a-=f,s+=f,x)break e}else i.head&&(i.head.comment=null);i.mode=16188;case 16188:if(512&i.flags){for(;c<16;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(4&i.wrap&&h!==(65535&i.check)){e.msg="header crc mismatch",i.mode=Ds;break}h=0,c=0}i.head&&(i.head.hcrc=i.flags>>9&1,i.head.done=!0),e.adler=i.check=0,i.mode=Ls;break;case 16189:for(;c<32;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}e.adler=i.check=Ps(h),h=0,c=0,i.mode=Rs;case Rs:if(0===i.havedict)return e.next_out=o,e.avail_out=l,e.next_in=s,e.avail_in=a,i.hold=h,i.bits=c,ks;e.adler=i.check=1,i.mode=Ls;case Ls:if(t===vs||t===ys)break e;case Is:if(i.last){h>>>=7&c,c-=7&c,i.mode=Os;break}for(;c<3;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}switch(i.last=1&h,h>>>=1,c-=1,3&h){case 0:i.mode=16193;break;case 1:if(Zs(i),i.mode=Fs,t===ys){h>>>=2,c-=2;break e}break;case 2:i.mode=16196;break;case 3:e.msg="invalid block type",i.mode=Ds}h>>>=2,c-=2;break;case 16193:for(h>>>=7&c,c-=7&c;c<32;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if((65535&h)!=(h>>>16^65535)){e.msg="invalid stored block lengths",i.mode=Ds;break}if(i.length=65535&h,h=0,c=0,i.mode=Ns,t===ys)break e;case Ns:i.mode=16195;case 16195:if(f=i.length,f){if(f>a&&(f=a),f>l&&(f=l),0===f)break e;r.set(n.subarray(s,s+f),o),a-=f,s+=f,l-=f,o+=f,i.length-=f;break}i.mode=Ls;break;case 16196:for(;c<14;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(i.nlen=257+(31&h),h>>>=5,c-=5,i.ndist=1+(31&h),h>>>=5,c-=5,i.ncode=4+(15&h),h>>>=4,c-=4,i.nlen>286||i.ndist>30){e.msg="too many length or distance symbols",i.mode=Ds;break}i.have=0,i.mode=16197;case 16197:for(;i.have<i.ncode;){for(;c<3;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}i.lens[T[i.have++]]=7&h,h>>>=3,c-=3}for(;i.have<19;)i.lens[T[i.have++]]=0;if(i.lencode=i.lendyn,i.lenbits=7,A={bits:i.lenbits},k=bs(0,i.lens,0,19,i.lencode,0,i.work,A),i.lenbits=A.bits,k){e.msg="invalid code lengths set",i.mode=Ds;break}i.have=0,i.mode=16198;case 16198:for(;i.have<i.nlen+i.ndist;){for(;C=i.lencode[h&(1<<i.lenbits)-1],m=C>>>24,b=C>>>16&255,w=65535&C,!(m<=c);){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(w<16)h>>>=m,c-=m,i.lens[i.have++]=w;else{if(16===w){for(E=m+2;c<E;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(h>>>=m,c-=m,0===i.have){e.msg="invalid bit length repeat",i.mode=Ds;break}x=i.lens[i.have-1],f=3+(3&h),h>>>=2,c-=2}else if(17===w){for(E=m+3;c<E;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}h>>>=m,c-=m,x=0,f=3+(7&h),h>>>=3,c-=3}else{for(E=m+7;c<E;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}h>>>=m,c-=m,x=0,f=11+(127&h),h>>>=7,c-=7}if(i.have+f>i.nlen+i.ndist){e.msg="invalid bit length 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function qa(e){if(e.url){const t=await ta.loadString(e.url,Sa(e,{range:{start:0,size:1e3}}));if(t){if(Da(t.split("\n")[0].split("\t")))return"hiccups"}}}function ja(e,t){ka[e]={fields:t}}var $a=Object.freeze({__proto__:null,knownFileExtensions:Pa,getFormat:za,inferFileFormat:Ha,inferFileFormatFromHeader:qa,inferTrackType:Va,inferIndexPath:Ua,registerFileFormats:ja});const Wa=[["A","T"],["G","C"],["Y","R"],["W","S"],["K","M"],["D","H"],["B","V"]],Ga=new Map;for(let qw of Wa){const jw=qw[0],$w=qw[1];Ga.set(jw,$w),Ga.set($w,jw),Ga.set(jw.toLowerCase(),$w.toLowerCase()),Ga.set($w.toLowerCase(),jw.toLowerCase())}function Za(e){let t="",i=e.length;for(;i-- >0;){const n=e[i];t+=Ga.has(n)?Ga.get(n):n}return t}class Qa{constructor(e,t,i){this.name=e,this.order=t,this.bpLength=i}}const Xa=Gi,Ya=new Set(["fastaURL","indexURL","cytobandURL","indexed"]);class Ka{constructor(e){this.fastaURL=e.fastaURL,this.withCredentials=e.withCredentials,this.chromosomeNames=[],this.chromosomes={},this.sequences=new Map;const t={};for(let i in e)e.hasOwnProperty(i)&&!Ya.has(i)&&(t[i]=e[i]);this.config=t}async init(){return this.loadAll()}async getSequence(e,t,i){if(!this.sequences.has(e))return;let n=this.sequences.get(e).find((e=>e.contains(t,i)));if(!n&&(n=this.sequences.get(e).find((e=>e.overlaps(t,i))),!n))return;t-=n.offset,i-=n.offset;let r="";if(t<0)for(let e=t;e<Math.min(i,0);e++)r+="*";if(i<=0)return Promise.resolve(r);const s=n.sequence,o=Math.min(i,s.length);return r+s.substring(t,o)}async loadAll(){let e;if(Ra(this.fastaURL)){let t=Lo(this.fastaURL);e="";for(let i of t)e+=String.fromCharCode(i)}else e=await ta.load(this.fastaURL,Sa(this.config));const t=new Set,i=Xa(e),n=i.length;let r,s=0,o=0,a={};for(;s<n;){if(r=i[s++].trim(),r.startsWith("#")||0===r.length);else if(r.startsWith(">")){a&&a.seq&&l.call(this,a,o++);const e=r.substr(1).split(/\s+/),t=e[0].split(":");if(a.chr=t[0],a.seq="",a.offset=0,t.length>1&&t[1].indexOf("-")>0){const i=t[1].split("-");2===i.length&&/^[0-9]+$/.test(i[0])&&/^[0-9]+$/.test(i[1]);const n=Number.parseInt(i[0]);if(Number.parseInt(i[1])>n&&(a.offset=n-1),e.length>1&&e[1].startsWith("@len="))try{a.length=parseInt(e[1].trim().substring(5))}catch(e){a.length=void 0,console.error(`Error parsing sequence length for ${r}`)}else a.length=void 0}}else a.seq+=r;a&&a.seq&&l.call(this,a,o)}function l(e,i){const n=e.length||e.offset+e.seq.length;if(t.has(e.chr)){const t=this.chromosomes[e.chr];t.bpLength=Math.max(t.bpLength,n)}else this.chromosomeNames.push(e.chr),this.sequences.set(e.chr,[]),this.chromosomes[e.chr]=new Qa(e.chr,i,n),t.add(e.chr);this.sequences.get(e.chr).push(new Ja(e.offset,e.seq))}}}class Ja{constructor(e,t){this.offset=e,this.sequence=t}contains(e,t){return this.offset<=e&&this.end>=t}overlaps(e,t){return this.offset<t&&this.end>e}get end(){return this.offset+this.sequence.length}}const el=function(e,t,i,n){this.chr=e,this.start=t,this.end=i,this.features=n};el.prototype.contains=function(e,t,i){return this.chr===e&&this.start<=t&&this.end>=i},el.prototype.containsRange=function(e){return this.chr===e.chr&&this.start<=e.start&&this.end>=e.end};const tl=Gi,il=new Set(["fastaURL","indexURL","compressedIndexURL","cytobandURL","indexed"]);class nl{constructor(e){this.file=e.fastaURL,this.indexFile=e.indexURL||e.indexFile||this.file+".fai",this.compressedIndexFile=e.compressedIndexURL||!1,this.withCredentials=e.withCredentials,this.chromosomeNames=[],this.chromosomes={},this.sequences={},this.offsets={};const t={};for(let i in e)e.hasOwnProperty(i)&&!il.has(i)&&(t[i]=e[i]);this.config=t}async init(){return this.getIndex()}async getSequence(e,t,i){if(!(this.interval&&this.interval.contains(e,t,i))){let n=t,r=i;if(i-t<5e4){const e=i-t,s=Math.round(t+e/2);n=Math.max(0,s-25e3),r=s+25e3}const s=await this.readSequence(e,n,r);this.interval=new el(e,n,r,s)}const n=t-this.interval.start,r=i-t;return this.interval.features?this.interval.features.substr(n,r):null}async getIndex(){if(this.index)return this.index;{const e=await ta.load(this.indexFile,Sa(this.config)),t=tl(e),i=t.length;let n=0,r=0;for(this.index={};n<i;){const e=t[n++].split("\t");if(5===e.length){const t=e[0],i=parseInt(e[1]),n={size:i,position:parseInt(e[2]),basesPerLine:parseInt(e[3]),bytesPerLine:parseInt(e[4])};this.chromosomeNames.push(t),this.index[t]=n,this.chromosomes[t]=new Qa(t,r++,i)}}return this.index}}async getCompressedIndex(){if(this.compressedIndex)return this.compressedIndex;if(!this.compressedIndexFile)return this.compressedIndex=[],this.compressedIndex;this.compressedIndex=[];const e=await ta.loadArrayBuffer(this.compressedIndexFile,Sa(this.config)),t=e.byteLength;if(t<8)return console.log("Cannot parse GZI index file: length ("+t+" bytes) is insufficient to determine content of index."),this.compressedIndex;const i=e.slice(0,8),n=Number(new DataView(i).getBigUint64(0,!0)),r=8+2*n*8;if(t!=r)return console.log("Incorrect file size of reference genome index. Expected : "+r+". Received : "+t),this.compressedIndex;this.compressedIndex.push([0,0]);for(let t=0;t<n;t++){const i=8+2*t*8,n=8+2*t*8+16,r=e.slice(i,n),s=new DataView(r),o=Number(s.getBigUint64(0,!0)),a=Number(s.getBigUint64(8,!0));this.compressedIndex.push([o,a])}return this.compressedIndex}async getRelevantCompressedBlockNumbers(e,t){if(e<0||t<0||t<e)return console.log("Incompatible query positions for reference-genome. Start:"+e+" | End:"+t),[];await this.getCompressedIndex();let i=[];const n=this.compressedIndex.length-1;if(0==this.compressedIndex.length)return console.log("Compressed index does not contain any content"),[];if(e>this.compressedIndex[n][1])return[n];let r=0,s=n,o=Math.floor(this.compressedIndex.length/2),a=this.compressedIndex.length+1,l=!1;for(let t=0;t<a;t++){const t=this.compressedIndex[o][1],i=o<this.compressedIndex.length-1?this.compressedIndex[o+1][1]:1/0;if(t<=e&&i>e){l=!0;break}t<e?r=o+1:s=o-1,o=Math.ceil((s-r)/2)+r}if(!l)return console.log("No blocks within compressed index found that correspond with query positions "+e+","+t),console.log(this.compressedIndex),[];i.push(o);for(let e=o+1;e<this.compressedIndex.length;e++){i.push(e);if(this.compressedIndex[e][1]>=t)break}const h=i[i.length-1];return h===this.compressedIndex.length-1&&this.compressedIndex[h][1]<t&&i.push(-1),i}async loadAndUncompressBlocks(e,t){if(await this.getCompressedIndex(),0==e.length)return"";let i=Array(e.length-1);for(let t=0;t<e.length-1;t++){const n=e[t],r=this.compressedIndex[n][0],s=e[t+1];let o=[];if(-1!=s){const e=this.compressedIndex[s][0]-r;o=await ta.loadArrayBuffer(this.file,Sa(this.config,{range:{start:r,size:e}}))}else o=await ta.loadArrayBuffer(this.file,Sa(this.config,{range:{start:r}}));const a=await Ao(o);i[t]=a}let n="";for(let e=0;e<i.length;e++)for(let t=0;t<i[e].length;t++){n+=String.fromCharCode(i[e][t])}const r=t-this.compressedIndex[e[0]][1];return n=n.substring(r),n}async readSequence(e,t,i){await this.getIndex(),await this.getCompressedIndex();const n=this.index[e];if(!n)return console.log("No index entry for chr: "+e),this.interval=new el(e,t,i,null),null;const r=Math.max(0,t),s=Math.min(n.size,i),o=n.bytesPerLine,a=n.basesPerLine,l=n.position,h=o-a,c=Math.floor(r/a),d=Math.floor(s/a),u=r-c*a,f=l+c*o+u,p=l+d*o+(s-d*a)-1,g=p-f+1;if(g<=0)return console.error("No sequence for "+e+":"+t+"-"+i),null;let m;if(this.compressedIndexFile){let e=await this.getRelevantCompressedBlockNumbers(f,p);if(0===e.length)return console.log("No blocks in the compressed index that correspond with the requested byte positions ("+f+","+p+")"),null;m=await this.loadAndUncompressBlocks(e,f)}else m=await ta.load(this.file,Sa(this.config,{range:{start:f,size:g}}));if(!m)return null;let b,w="",v=0,y=m.length;for(u>0&&(b=Math.min(s-r,a-u),w+=m.substr(v,b),v+=b+h);v<y;)b=Math.min(a,y-v),w+=m.substr(v,b),v+=b+h;return w}}const rl=Gi;class sl{constructor(e){this.url=e,this.chromosomeNames=[],this.chromosomes={}}async init(){return this.loadAll()}async getSequence(e,t,i){}async loadAll(){let e;if(Ra(this.url)){let t=Lo(this.fastaURL);e="";for(let i of t)e+=String.fromCharCode(i)}else e=await ta.load(this.url,{});this.chromosomeNames=[],this.chromosomes={};const t=rl(e);let i=0;for(let e of t){const t=e.split("\t");this.chromosomeNames.push(t[0]);const n=Number.parseInt(t[1]),r=new Qa(t[0],i++,n);this.chromosomes[t[0]]=r}}}async function ol(e){let t;return t="chromsizes"===e.format?new sl(e.fastaURL):Ra(e.fastaURL)||!1===e.indexed?new Ka(e):new nl(e),await t.init(),t}const al={A:"rgb(  0, 200,   0)",C:"rgb(  0,0,200)",T:"rgb(255,0,0)",G:"rgb(209,113,  5)",N:"rgb(80,80,80)"},ll=Number.MIN_SAFE_INTEGER,hl={TTT:"F",TTC:"F",TTA:"L",TTG:"L",CTT:"L",CTC:"L",CTA:"L",CTG:"L",ATT:"I",ATC:"I",ATA:"I",ATG:"M",GTT:"V",GTC:"V",GTA:"V",GTG:"V",TCT:"S",TCC:"S",TCA:"S",TCG:"S",CCT:"P",CCC:"P",CCA:"P",CCG:"P",ACT:"T",ACC:"T",ACA:"T",ACG:"T",GCT:"A",GCC:"A",GCA:"A",GCG:"A",TAT:"Y",TAC:"Y",TAA:"STOP",TAG:"STOP",CAT:"H",CAC:"H",CAA:"Q",CAG:"Q",AAT:"N",AAC:"N",AAA:"K",AAG:"K",GAT:"D",GAC:"D",GAA:"E",GAG:"E",TGT:"C",TGC:"C",TGA:"STOP",TGG:"W",CGT:"R",CGC:"R",CGA:"R",CGG:"R",AGT:"S",AGC:"S",AGA:"R",AGG:"R",GGT:"G",GGC:"G",GGA:"G",GGG:"G"},cl={},dl=["A","G","C","T","Y","R","W","S","K","M","D","V","H","B","N","X"],ul=["T","C","G","A","R","Y","W","S","M","K","H","B","D","V","N","X"];for(let Ww=0;Ww<dl.length;Ww++)cl[dl[Ww]]=ul[Ww],cl[dl[Ww].toLowerCase()]=ul[Ww].toLowerCase();const fl=115;class pl{constructor(e,t){this.config=e,this.browser=t,this.type="sequence",this.removable=void 0===e.removable||e.removable,this.name=e.name,this.id=e.id,this.sequenceType=e.sequenceType||"dna",this.disableButtons=!1,this.order=e.order||ll,this.ignoreTrackMenu=!1,this.reversed=!0===e.reversed,this.frameTranslate=!0===e.frameTranslate,this.height=this.frameTranslate?fl:25,e.url&&(e.fastaURL=e.url),e.fastaURL||(this.id=e.id||"sequence")}menuItemList(){return[{name:this.reversed?"Forward":"Reverse",click:()=>{this.reversed=!this.reversed,this.trackView.repaintViews()}},{name:this.frameTranslate?"Close Translation":"Three-frame Translate",click:()=>{if(this.frameTranslate=!this.frameTranslate,this.frameTranslate){for(let e of this.trackView.viewports)e.setContentHeight(fl);this.trackView.setTrackHeight(fl)}else{for(let e of this.trackView.viewports)e.setContentHeight(25);this.trackView.setTrackHeight(25)}this.trackView.repaintViews()}}]}contextMenuItemList(e){const t=e.viewport;if(t.referenceFrame.bpPerPixel<=1){const e=t.getWidth()*t.referenceFrame.bpPerPixel,i=t.referenceFrame.chr,n=Math.floor(t.referenceFrame.start),r=Math.ceil(n+e),s=[{label:this.reversed?"View visible sequence (reversed)...":"View visible sequence...",click:async()=>{let e=await this.browser.genome.sequence.getSequence(i,n,r);e?this.reversed&&(e=Za(e)):e="Unknown sequence",this.browser.alert.present(e)}}];return Fa()&&s.push({label:"Copy visible sequence",click:async()=>{let e=await this.browser.genome.sequence.getSequence(i,n,r);e?this.reversed&&(e=Za(e)):e="Unknown sequence";try{await navigator.clipboard.writeText(e)}catch(e){console.error(e),this.browser.alert.present(`error copying sequence to clipboard ${e}`)}}}),s.push("<hr/>"),s}}translateSequence(e){const t=[[],[],[]];for(let i of[0,1,2]){let n=i;for(;e.length-n>=3;){let r=e.slice(n,n+3);this.reversed&&(r=r.split("").reverse().join(""));const s=hl[r.toUpperCase()]||"";t[i].push({codons:r,aminoA:s}),n+=3}}return t}async getSequenceSource(){return this.config.fastaURL?(this.fasta||(this.fasta=new gl(this.config,this.browser.genome),await this.fasta.init()),this.fasta):this.browser.genome.sequence}async getFeatures(e,t,i,n){if(t=Math.floor(t),i=Math.floor(i),n&&n>10)return null;{const n=await this.getSequenceSource();return{bpStart:t,sequence:await n.getSequence(e,t,i)}}}draw(e){const t=e.context;if(e.features){let i=e.features.sequence;if(!i)return;this.reversed&&(i=i.split("").map((function(e){return cl[e]})).join(""));const n=e.features.bpStart,r=1+e.bpStart+e.pixelWidth*e.bpPerPixel;for(let s=Math.floor(e.bpStart);s<=r;s++){const r=Math.floor(s-n);if(r>=0&&r<i.length){const n=(s-e.bpStart)/e.bpPerPixel,o=1/e.bpPerPixel,a=i[r],l=this.fillColor(a.toUpperCase());if(e.bpPerPixel>.1)ya.fillRect(t,n,5,o,10,{fillStyle:l});else{const i=n+.5*(o-t.measureText(a).width);"y"===e.axis?(t.save(),ya.labelTransformWithContext(t,i),ya.strokeText(t,a,i,15,{strokeStyle:l}),t.restore()):ya.strokeText(t,a,i,15,{strokeStyle:l})}}}if(this.frameTranslate){let r=25;const s=this.translateSequence(i);for(let i=0;i<s.length;i++){const o=s[i];for(let s=0;s<o.length;s++){let a=0==s%2?"rgb(160,160,160)":"rgb(224,224,224)";const l=o[s],h=n+i+3*s-e.bpStart,c=Math.floor(h/e.bpPerPixel),d=Math.floor((h+3)/e.bpPerPixel),u=Math.round((c+d)/2);if(d<0)continue;if(c>e.pixelWidth)break;let f=l.aminoA;l.aminoA.indexOf("STOP")>-1?(a="rgb(255, 0, 0)",f="STOP"):"M"===l.aminoA&&(a="rgb(0, 153, 0)",f="START"),ya.fillRect(t,c,r,d-c,25,{fillStyle:a}),e.bpPerPixel<=.1&&ya.strokeText(t,f,u-t.measureText(f).width/2,r+15)}r+=30}}}}get supportsWholeGenome(){return!1}computePixelHeight(e){return this.height=this.frameTranslate?fl:25,this.height}fillColor(e){return this.color?this.color:"dna"===this.sequenceType?al[e]||"gray":"rgb(0, 0, 150)"}getState(){const e={type:"sequence"};return this.order!==ll&&(e.order=this.order),this.reversed&&(e.revealed=!0),e}}class gl{constructor(e,t){this.config=e,this.genome=t}async init(){this.fasta=await ol(this.config),this.chrNameMap=new Map;for(let e of this.fasta.chromosomeNames)this.chrNameMap.set(this.genome.getChromosomeName(e),e)}async getSequence(e,t,i){const n=this.chrNameMap.has(e)?this.chrNameMap.get(e):e;return this.fasta.getSequence(n,t,i)}}class ml{constructor(e,t,i,n){this.guid=_t.guid(),this.trackView=e,this.referenceFrame=i,this.browser=e.browser,this.$viewport=ft('<div class="igv-viewport">'),t.appendChild(this.$viewport.get(0)),e.track.height&&(this.$viewport.get(0).style.height=`${e.track.height}px`),e.track instanceof pl&&(this.alert=new Mi(this.$viewport.get(0))),this.contentTop=0,this.contentHeight=this.$viewport.height(),this.$viewport.width(n),this.initializationHelper()}initializationHelper(){}showMessage(e){this.messageDiv||(this.messageDiv=document.createElement("div"),this.messageDiv.className="igv-viewport-message",this.$viewport.append(ft(this.messageDiv))),this.messageDiv.textContent=e,this.messageDiv.style.display="inline-block"}hideMessage(e){this.messageDiv&&(this.messageDiv.style.display="none")}setTrackLabel(e){}startSpinner(){}stopSpinner(){}checkZoomIn(){return!0}shift(){}setTop(e){this.contentTop=e,this.$viewport.height()}async loadFeatures(){}clearCache(){}async repaint(){}draw(e,t,i){console.log("Viewport - draw(drawConfiguration, features, roiFeatures)")}checkContentHeight(e){let t=this.trackView.track;if(e=e||this.cachedFeatures,"FILL"===t.displayMode)this.setContentHeight(this.$viewport.height());else if("function"==typeof t.computePixelHeight&&e&&e.length>0){let i=t.computePixelHeight(e);i!==this.contentHeight&&this.setContentHeight(i)}}getContentHeight(){return this.contentHeight}setContentHeight(e){this.contentHeight=e}isLoading(){return!1}saveSVG(){}isVisible(){return this.$viewport.width()}setWidth(e){this.$viewport.width(e)}getWidth(){return this.$viewport.width()}getContentTop(){return this.contentTop}containsPosition(e,t){console.log("Viewport - containsPosition(chr, position)")}addMouseHandlers(){}removeMouseHandlers(){}dispose(){this.popover&&this.popover.dispose(),this.$viewport.get(0).remove();for(let e of Object.keys(this))this[e]=void 0}}
+/*!!
+ *  Canvas 2 Svg v1.0.19
+ *  A low level canvas to SVG converter. Uses a mock canvas context to build an SVG document.
+ *
+ *  Licensed under the MIT license:
+ *  http://www.opensource.org/licenses/mit-license.php
+ *
+ *  Author:
+ *  Kerry Liu
+ *
+ *  Copyright (c) 2014 Gliffy Inc.
+ */function bl(e,t){var i,n=Object.keys(t);for(i=0;i<n.length;i++)e=e.replace(new RegExp("\\{"+n[i]+"\\}","gi"),t[n[i]]);return e}function wl(e){var t,i,n;if(!e)throw new Error("cannot create a random attribute name for an undefined object");t="ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz",i="";do{for(i="",n=0;n<12;n++)i+=t[Math.floor(51*Math.random())]}while(e[i]);return i}function vl(e){var t={alphabetic:"alphabetic",hanging:"hanging",top:"text-before-edge",bottom:"text-after-edge",middle:"central"};return t[e]||t.alphabetic}function yl(e){var t=Math.sqrt(e[0]*e[0]+e[1]*e[1]);return[e[0]/t,e[1]/t]}const _l=function(e,t){var i,n,r,s={};for(e=e.split(","),t=t||10,i=0;i<e.length;i+=2)n="&"+e[i+1]+";",r=parseInt(e[i],t),s[n]="&#"+r+";";return 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n.setAttribute("id",r),n.setAttribute("width",e.width),n.setAttribute("height",e.height),"CANVAS"===e.nodeName||"IMG"===e.nodeName?(i=this.__createElement("image"),i.setAttribute("width",e.width),i.setAttribute("height",e.height),i.setAttributeNS("http://www.w3.org/1999/xlink","xlink:href","CANVAS"===e.nodeName?e.toDataURL():e.getAttribute("src")),n.appendChild(i),this.__defs.appendChild(n)):e instanceof Sl&&(n.appendChild(e.__root.childNodes[1]),this.__defs.appendChild(n)),new Cl(n,this)}setLineDash(e){e&&e.length>0?this.lineDash=e.join(","):this.lineDash=null}drawFocusRing(){}createImageData(){}getImageData(){}putImageData(){}globalCompositeOperation(){}setTransform(){}}const Al=function(e,t,i,n){this.start=e,this.end=t,this.name=i,this.stain=0,"acen"===n?this.type="c":(this.type=n.charAt(1),"p"===this.type&&(this.stain=parseInt(n.substring(4))))};function El(){return"2.15.11"}const Tl=Gi,Ml={loadGenome:async function(e){const t=e.cytobandURL,i=e.aliasURL,n=await ol(e);let r;i&&(r=await function(e,t){return ta.loadString(e,Sa(t)).then((function(e){var t=Tl(e),i=[];return t.forEach((function(e){!e.startsWith("#")&&e.length>0&&i.push(e.split("\t"))})),i}))}(i,n.config));const s=new Rl(e,n,r);return t&&(s.cytobands=await async function(e,t,i){let n;if(Ra(e)){const t=Lo(e);n="";const i=t.length;for(let e=0;e<i;e++)n+=String.fromCharCode(t[e])}else n=await ta.loadString(e,Sa(t));const r={};let s,o=[];const a=Tl(n);for(let e of a){var l=e.split("\t"),h=i.getChromosomeName(l[0]);if(s||(s=h),h!==s&&(r[s]=o,o=[],s=h),5===l.length){var c=parseInt(l[1]),d=parseInt(l[2]),u=l[3],f=l[4];o.push(new Al(c,d,u,f))}}return r}(t,n.config,s)),s},initializeGenomes:async function(e){if(!Ml.KNOWN_GENOMES){const i={};if(!1!==e.loadDefaultGenomes)try{const r=`https://igv.org/genomes/genomes.json?randomSeed=${Math.random().toString(36)}&version=2.15.11`;t(await ta.loadJson(r,{timeout:5e3}))}catch(s){console.error(s);try{const o=`https://s3.amazonaws.com/igv.org.genomes/genomes.json?randomSeed=${Math.random().toString(36)}&version=2.15.11`;t(await ta.loadJson(o,{}))}catch(a){console.error(a),console.warn("Errors loading default genome definitions.")}}const n=e.genomeList||e.genomes;if(n)if("string"==typeof n){t(await ta.loadJson(n,{}))}else t(n);function t(e){return e.forEach((function(e){i[e.id]=e})),i}Ml.KNOWN_GENOMES=i}},isWholeGenomeView:function(e){return"all"===e.toLowerCase()},expandReference:function(e,t){if($i(t)&&t.startsWith("{"))try{t=JSON.parse(t)}catch(e){}let i;if($i(t)?i=t:t.genome?i=t.genome:void 0!==t.id&&void 0===t.fastaURL&&(i=t.id),i){const t=Ml.KNOWN_GENOMES[i];return t||e.present(new Error(`Unknown genome id: ${i}`),void 0),t}return t}};class Rl{constructor(e,t,i){this.config=e,this.id=e.id||function(e){return void 0!==e.id?e.id:e.fastaURL&&$i(e.fastaURL)?e.fastaURL:e.fastaURL&&e.fastaURL.name?e.fastaURL.name:("0000"+(Math.random()*Math.pow(36,4)<<0).toString(36)).slice(-4)}(e),this.sequence=t,this.chromosomeNames=t.chromosomeNames,this.chromosomes=t.chromosomes,this.featureDB=new Map,this.wholeGenomeView=void 0===e.wholeGenomeView||e.wholeGenomeView,this.wholeGenomeView&&Object.keys(t.chromosomes).length>1?function(e,t){let i;if(t.chromosomeOrder)Array.isArray(t.chromosomeOrder)?e.wgChromosomeNames=t.chromosomeOrder:e.wgChromosomeNames=t.chromosomeOrder.split(",").map((e=>e.trim())),i=e.wgChromosomeNames.map((t=>e.chromosomes[t])).filter((e=>void 0!==e));else{const t=Object.keys(e.chromosomes).map((t=>e.chromosomes[t].bpLength)).reduce(((e,t)=>Math.max(e,t)))/50;i=Object.values(e.chromosomes).filter((e=>e.bpLength>t));const n=i.filter((e=>r(e.name.replace("chr","")))),s=i.filter((e=>!r(e.name.replace("chr",""))));n.sort(((e,t)=>Number.parseInt(e.name.replace("chr",""))-Number.parseInt(t.name.replace("chr",""))));const o=n.map((e=>e.name));for(let e of s)o.push(e.name);e.wgChromosomeNames=o}const n=i.reduce(((e,t)=>e+t.bpLength),0);function r(e){return/^\d+$/.test(e)}e.chromosomes.all={name:"all",bpLength:n}}(this,e):this.wgChromosomeNames=t.chromosomeNames;var n={},r=this;n.all="all",this.chromosomeNames.forEach((function(e){var t=e.startsWith("chr")?e.substring(3):"chr"+e;n[t.toLowerCase()]=e,"chrM"===e&&(n.mt="chrM"),"MT"===e&&(n.chrm="MT"),n[e.toLowerCase()]=e})),i&&i.forEach((function(e){var t,i;for(i=0;i<e.length;i++)if(r.chromosomes[e[i]]){t=e[i];break}t&&e.forEach((function(e){e!==t&&(n[e.toLowerCase()]=t,n[e]=t)}))})),this.chrAliasTable=n}showWholeGenomeView(){return!1!==this.config.wholeGenomeView}toJSON(){return Object.assign({},this.config,{tracks:void 0})}getInitialLocus(){}getHomeChromosomeName(){return this.showWholeGenomeView()&&this.chromosomes.hasOwnProperty("all")?"all":this.chromosomeNames[0]}getChromosomeName(e){const t=e?this.chrAliasTable[e.toLowerCase()]:e;return t||e}getChromosome(e){return e=this.getChromosomeName(e),this.chromosomes[e]}getCytobands(e){return this.cytobands?this.cytobands[e]:null}getLongestChromosome(){var e,t=this.chromosomes;for(let n in t){if(t.hasOwnProperty(n)){var i=t[n];(void 0===e||i.bpLength>e.bpLength)&&(e=i)}return e}}getChromosomes(){return this.chromosomes}getGenomeCoordinate(e,t){var i=this.getCumulativeOffset(e);if(void 0!==i)return i+t}getChromosomeCoordinate(e){let t;void 0===this.cumulativeOffsets&&(this.cumulativeOffsets=computeCumulativeOffsets.call(this));let i=0;for(let n of this.wgChromosomeNames){const r=this.cumulativeOffsets[n];if(r>e){return{chr:t,position:e-i}}t=n,i=r}return{chr:this.wgChromosomeNames[this.wgChromosomeNames.length-1],position:0}}getCumulativeOffset(e){void 0===this.cumulativeOffsets&&(this.cumulativeOffsets=function(){let e=this,t={},i=0;for(let n of e.wgChromosomeNames){t[n]=Math.floor(i);i+=e.getChromosome(n).bpLength}return t}.call(this));const t=this.getChromosomeName(e);return this.cumulativeOffsets[t]}getGenomeLength(){let e=this;if(!this.bpLength){let t=0;e.wgChromosomeNames.forEach((function(i){let n=e.chromosomes[i];t+=n.bpLength})),this.bpLength=t}return this.bpLength}async getSequence(e,t,i){return e=this.getChromosomeName(e),this.sequence.getSequence(e,t,i)}addFeaturesToDB(e,t){const i=(e,t)=>{const i=this.featureDB.get(e);i&&(t=t.end-t.start>i.end-i.start?t:i),this.featureDB.set(e,t)};for(let n of e)if(n.name&&i(n.name.toUpperCase(),n),n.gene&&n.gene.name&&i(n.gene.name.toUpperCase(),n),t.searchableFields)for(let e of t.searchableFields){const t=n.getAttributeValue(e);t&&(t.indexOf(" ")>0?i(t.replaceAll(" ","+").toUpperCase(),n):i(t.toUpperCase(),n))}}}let Ll,Il=0,Nl=0;class Fl extends ml{constructor(e,t,i,n){super(e,t,i,n)}initializationHelper(){this.$spinner=ft("<div>",{class:"igv-loading-spinner-container"}),this.$viewport.append(this.$spinner),this.$spinner.append(ft("<div>"));const e=this.trackView.track;"sequence"!==e.type&&(this.$zoomInNotice=this.createZoomInNotice(this.$viewport)),e.name&&"sequence"!==e.id&&(this.$trackLabel=ft('<div class="igv-track-label">'),this.$viewport.append(this.$trackLabel),this.setTrackLabel(e.name),!1===this.browser.trackLabelsVisible&&this.$trackLabel.hide()),this.stopSpinner(),this.addMouseHandlers()}setContentHeight(e){super.setContentHeight(e),this.featureCache&&(this.featureCache.redraw=!0)}setTrackLabel(e){this.$trackLabel.empty(),this.$trackLabel.html(e);const t=this.$trackLabel.text();this.$trackLabel.attr("title",t)}startSpinner(){this.$spinner.show()}stopSpinner(){this.$spinner&&this.$spinner.hide()}checkZoomIn(){if(this.trackView.track&&"sequence"===this.trackView.track.type&&this.referenceFrame.bpPerPixel>10)return ft(this.canvas).remove(),this.canvas=void 0,!1;if(!this.viewIsReady())return!1;if((()=>{if("all"!==this.referenceFrame.chr.toLowerCase()||this.trackView.track.supportsWholeGenome){const e=this.trackView.track.visibilityWindow;return void 0!==e&&e>0&&this.referenceFrame.bpPerPixel*this.$viewport.width()>e}return!0})()){if(this.canvas&&(ft(this.canvas).remove(),this.canvas=void 0),this.trackView.track.autoHeight){const e=this.trackView.minHeight||0;this.setContentHeight(e)}return this.$zoomInNotice&&this.$zoomInNotice.show(),!1}return this.$zoomInNotice&&this.$zoomInNotice.hide(),!0}shift(){const e=this.referenceFrame;if(this.canvas&&this.canvas._data&&this.canvas._data.referenceFrame.chr===this.referenceFrame.chr&&this.canvas._data.bpPerPixel===e.bpPerPixel){const t=Math.round((this.canvas._data.bpStart-e.start)/e.bpPerPixel);this.canvas.style.left=t+"px"}}setTop(e){if(super.setTop(e),this.canvas){const t=this.$viewport.height(),i=e+this.canvas._data.pixelTop,n=i+this.canvas._data.pixelHeight;(i>0||n<t)&&this.repaint()}else this.repaint();let t=e+this.canvas._data.pixelTop;this.canvas.style.top=`${t}px`}async loadFeatures(){const e=this.referenceFrame,t=e.chr,i=this.browser.genome.getChromosome(t).bpLength,n=this.$viewport.width()*e.bpPerPixel,r=Math.floor(Math.max(0,e.start-n)),s=Math.ceil(Math.min(i,e.start+n+n));if(!this.loading||this.loading.start!==r||this.loading.end!==s){this.loading={start:r,end:s},this.startSpinner();try{const i=this.trackView.track,n=await this.getFeatures(i,t,r,s,e.bpPerPixel);if(n){let o=[];if(i.roiSets&&i.roiSets.length>0)for(let n of i.roiSets){const i=await n.getFeatures(t,r,s,e.bpPerPixel);o.push({track:n,features:i})}const a=i&&("wig"===i.type||"merged"===i.type);return this.featureCache=new Bl(t,r,s,e.bpPerPixel,n,o,a),this.loading=!1,this.hideMessage(),this.stopSpinner(),this.featureCache}}catch(e){this.trackView&&!0!==this.trackView.disposed&&(this.showMessage("Error loading track data"),this.browser.alert.present(e),console.error(e))}finally{this.loading=!1,this.stopSpinner()}}}repaintDimensions(){const e=Ml.isWholeGenomeView(this.referenceFrame.chr),t=e?this.$viewport.width():3*this.$viewport.width(),i=this.referenceFrame.bpPerPixel;return{bpStart:this.referenceFrame.start-(e?0:t/3*i),bpEnd:this.referenceFrame.end+(e?0:t/3*i),pixelWidth:t}}repaint(){if(void 0===this.featureCache)return;const{features:e,roiFeatures:t}=this.featureCache,{bpStart:i,bpEnd:n,pixelWidth:r}=this.repaintDimensions(),s=this.$viewport.height(),o=this.getContentHeight(),a=t?Math.max(o,s):o,l=Math.min(a,3*s);if(0===r||0===l)return void(this.canvas&&ft(this.canvas).remove());const h=Math.max(0,-this.contentTop-Math.floor(l/3)),c=this.referenceFrame.bpPerPixel,d=Math.round((i-this.referenceFrame.start)/c),u=(this.contentTop||0)+h,f=document.createElement("canvas");f.style.position="relative",f.style.display="block",f.style.width=r+"px",f.style.height=l+"px",f.style.left=d+"px",f.style.top=u+"px";const p="FILL"===this.trackView.track.displayMode||!1!==this.trackView.track.supportHiDPI?window.devicePixelRatio:1;f.width=p*r,f.height=p*l;const g=f.getContext("2d");g.scale(p,p),g.translate(0,-h);const m={context:g,pixelXOffset:d,pixelWidth:r,pixelHeight:l,pixelTop:h,bpStart:i,bpEnd:n,bpPerPixel:c,referenceFrame:this.referenceFrame,selection:this.selection,viewport:this,viewportWidth:this.$viewport.width()};this.draw(m,e,t),this.canvas&&ft(this.canvas).remove(),f._data=m,this.canvas=f,this.$viewport.append(ft(f))}refresh(){if(!this.canvas||!this.featureCache)return;const e=this.canvas._data;e.context.clearRect(0,0,this.canvas.width,this.canvas.height);const{features:t,roiFeatures:i}=this.featureCache;this.draw(e,t,i)}draw(e,t,i){if(t&&(e.features=t,this.trackView.track.draw(e)),i&&i.length>0)for(let t of i)e.features=t.features,t.track.draw(e)}containsPosition(e,t){return this.referenceFrame.chr===e&&t>=this.referenceFrame.start&&t<=this.referenceFrame.calculateEnd(this.getWidth())}isLoading(){return this.loading}savePNG(){if(!this.canvas)return;const e=this.canvas._data,t=e?e.pixelTop:0,i=window.devicePixelRatio,n=this.$viewport.width()*i,r=this.$viewport.height()*i,s=-ft(this.canvas).position().left*i,o=(-this.contentTop-t)*i,a=this.canvas.getContext("2d").getImageData(s,o,n,r),l=document.createElement("canvas"),h=l.getContext("2d");l.width=a.width,l.height=a.height,h.putImageData(a,0,0);Ki((this.$trackLabel.text()?this.$trackLabel.text():"image")+".png",l.toDataURL("image/png"))}saveSVG(){let{width:e,height:t}=this.browser.columnContainer.getBoundingClientRect();const i=new Sl({width:e,height:8e3,backdropColor:"white",multiLocusGap:0,viewbox:{x:0,y:0,width:e,height:8e3}}),n={deltaX:32,deltaY:32};this.renderViewportToSVG(i,n),i.setHeight(t);const r=(this.trackView.track.name||this.trackView.track.id).replace(/\W/g,""),s=this.browser.referenceFrameList.indexOf(this.referenceFrame),o=i.getSerializedSvg(!0),a=URL.createObjectURL(new Blob([o],{type:"application/octet-stream"}));Ki(`${`${r}_referenceFrame_${s}_guid_${_t.guid()}`}.svg`,a)}renderViewportToSVG(e,{deltaX:t,deltaY:i}){if(this.$zoomInNotice&&this.$zoomInNotice.is(":visible"))return;const{width:n,height:r}=this.$viewport.get(0).getBoundingClientRect(),s=`${(this.trackView.track.name||this.trackView.track.id).replace(/\W/g,"")}_referenceFrame_${this.browser.referenceFrameList.indexOf(this.referenceFrame)}_guid_${_t.guid()}`;this.drawSVGWithContext(e,n,r,s,t,i+this.contentTop,-this.contentTop)}renderSVGContext(e,{deltaX:t,deltaY:i}){if(this.renderViewportToSVG(e,{deltaX:t,deltaY:i}),(!this.$zoomInNotice||!this.$zoomInNotice.is(":visible"))&&this.$trackLabel&&!0===this.browser.trackLabelsVisible){const{x:n,y:r,width:s,height:o}=_t.relativeDOMBBox(this.$viewport.get(0),this.$trackLabel.get(0));this.renderTrackLabelSVG(e,t+n,i+r,s,o)}}renderTrackLabelSVG(e,t,i,n,r){const s=`${(this.trackView.track.name||this.trackView.track.id).replace(/\W/g,"")}_track_label_guid_${_t.guid()}`;e.saveWithTranslationAndClipRect(s,t,i,n,r,0),e.fillStyle="white",e.fillRect(0,0,n,r),e.font="12px Arial",e.fillStyle="rgb(68, 68, 68)";const{width:o}=e.measureText(this.$trackLabel.text()),a=.25*(n-o),l=.7*(r-12);e.fillText(this.$trackLabel.text(),a,r-l),e.strokeStyle="rgb(68, 68, 68)",e.strokeRect(0,0,n,r),e.restore()}drawSVGWithContext(e,t,i,n,r,s,o){e.saveWithTranslationAndClipRect(n,r,s,t,i,o);let{start:a,bpPerPixel:l}=this.referenceFrame;const h={context:e,viewport:this,referenceFrame:this.referenceFrame,top:o,pixelTop:o,pixelWidth:t,pixelHeight:i,bpStart:a,bpEnd:a+t*l,bpPerPixel:l,viewportWidth:t,selection:this.selection},c=this.featureCache?this.featureCache.features:void 0,d=this.featureCache?this.featureCache.roiFeatures:void 0;this.draw(h,c,d),e.restore()}get cachedFeatures(){return this.featureCache?this.featureCache.features:[]}clearCache(){this.featureCache=void 0,this.canvas&&(this.canvas._data=void 0)}async getFeatures(e,t,i,n,r){if(this.featureCache&&this.featureCache.containsRange(t,i,n,r))return this.featureCache.features;if("function"==typeof e.getFeatures){const s=await e.getFeatures(t,i,n,r,this);return this.checkContentHeight(s),s}}needsRepaint(){if(!this.canvas)return!0;const e=this.canvas._data;return!e||this.referenceFrame.start<e.bpStart||this.referenceFrame.end>e.bpEnd||this.referenceFrame.chr!==e.referenceFrame.chr||this.referenceFrame.bpPerPixel!=e.bpPerPixel}needsReload(){if(!this.featureCache)return!0;const{chr:e,bpPerPixel:t}=this.referenceFrame,{bpStart:i,bpEnd:n}=this.repaintDimensions();return!this.featureCache.containsRange(e,i,n,t)}createZoomInNotice(e){const t=ft("<div>",{class:"igv-zoom-in-notice-container"});e.append(t);const i=ft("<div>");return t.append(i),i.text("Zoom in to see features"),t.hide(),t}viewIsReady(){return this.browser&&this.browser.referenceFrameList&&this.referenceFrame}addMouseHandlers(){const e=this.$viewport.get(0);this.addViewportContextMenuHandler(e);const t=e=>{this.enableClick=!0,this.browser.mouseDownOnViewport(e,this),_t.pageCoordinates(e)};e.addEventListener("mousedown",t),e.addEventListener("touchstart",t);const i=e=>{this.browser.dragObject||this.browser.isScrolling?(this.browser.cancelTrackPan(),this.enableClick=!1):(this.browser.cancelTrackPan(),this.browser.endTrackDrag())};e.addEventListener("mouseup",i),e.addEventListener("touchend",i),"function"==typeof this.trackView.track.hoverText&&e.addEventListener("mousemove",(e=>{if(0===e.buttons&&Date.now()-Nl>100){Nl=Date.now();const t=this.createClickState(e);if(t){const e=this.trackView.track.hoverText(t);e?this.$viewport[0].setAttribute("title",e):this.$viewport[0].removeAttribute("title")}}})),this.addViewportClickHandler(this.$viewport.get(0)),this.trackView.track.name&&"sequence"!==this.trackView.track.config.type&&this.addTrackLabelClickHandler(this.$trackLabel.get(0))}addViewportContextMenuHandler(e){e.addEventListener("contextmenu",(e=>{if(this.browser.dragObject)return!1;const t=this.createClickState(e);if(void 0===t)return!1;e.preventDefault();let i=[];if("function"==typeof this.trackView.track.contextMenuItemList){const e=this.trackView.track.contextMenuItemList(t);e&&(i=e)}i.length>0&&i.push({label:ft("<HR>")}),i.push({label:"Save Image (PNG)",click:()=>this.savePNG()}),i.push({label:"Save Image (SVG)",click:()=>this.saveSVG()}),this.browser.menuPopup.presentTrackContextMenu(e,i)}))}addViewportClickHandler(e){e.addEventListener("click",(e=>{if(this.enableClick&&this.canvas){if(3===e.which||e.ctrlKey)return;if(ft(".igv-popover").hide(),this.browser.dragObject||this.browser.isScrolling)return;e.preventDefault();const t=_t.translateMouseCoordinates(e,this.$viewport.get(0)).x,i=_t.translateMouseCoordinates(e,this.canvas).x,n=this.referenceFrame,r=Math.floor(n.start+n.toBP(i)),s=Date.now();if(s-Il<this.browser.constants.doubleClickDelay){Ll&&(window.clearTimeout(Ll),Ll=void 0);const e=Math.round(n.start+n.toBP(t));let i;if("all"===this.referenceFrame.chr.toLowerCase()){const t=this.browser.genome.getChromosomeCoordinate(e).chr;if(1===this.browser.referenceFrameList.length)i=t;else{const e=this.browser.referenceFrameList.map((({locusSearchString:e})=>e));e[this.browser.referenceFrameList.indexOf(this.referenceFrame)]=t,i=e.join(" ")}this.browser.search(i)}else this.browser.zoomWithScaleFactor(.5,e,this.referenceFrame)}else e.shiftKey&&"function"==typeof this.trackView.track.shiftClick?this.trackView.track.shiftClick(r,e):"function"==typeof this.trackView.track.popupData&&(Ll=setTimeout((()=>{const t=this.getPopupContent(e);t&&(this.popover&&this.popover.dispose(),this.popover=new Oi(this.browser.columnContainer),this.popover.presentContentWithEvent(e,t)),window.clearTimeout(Ll),Ll=void 0}),this.browser.constants.doubleClickDelay));Il=s}}))}addTrackLabelClickHandler(e){e.addEventListener("click",(e=>{e.stopPropagation();const{track:t}=this.trackView;let i;"function"==typeof t.description?i=t.description():t.description&&(i=`<div>${t.description}</div>`),i&&(this.popover&&this.popover.dispose(),this.popover=new Oi(this.browser.columnContainer,t.name||""),this.popover.presentContentWithEvent(e,i))}))}createClickState(e){if(!this.canvas)return;const t=this.referenceFrame,i=_t.translateMouseCoordinates(e,this.$viewport.get(0)),n=_t.translateMouseCoordinates(e,this.canvas),r=t.start+t.toBP(i.x);return{event:e,viewport:this,referenceFrame:t,genomicLocation:r,y:i.y-this.contentTop,canvasX:n.x,canvasY:n.y}}getPopupContent(e){const t=this.createClickState(e);if(void 0===t)return;let i=this.trackView.track;const n=i.popupData(t),r=this.browser.fireEvent("trackclick",[i,n]);let s;return void 0===r||!0===r?n&&n.length>0&&(s=n.map((e=>{if(e.name){const t=`<span>${e.name}</span>&nbsp&nbsp&nbsp${e.value}`;return`<div title="${e.value}">${t}</div>`}return"<hr>"===e?e:e.html?e.html:`<div title="${e}">${e}</div>`})).join("")):"string"==typeof r&&(s=r),s}}class Bl{constructor(e,t,i,n,r,s,o){this.chr=e,this.bpStart=t,this.bpEnd=i,this.bpPerPixel=n,this.features=r,this.roiFeatures=s,this.multiresolution=o}containsRange(e,t,i,n){const r=this.multiresolution?this.bpPerPixel/n:1;return t>=this.bpStart&&i<=this.bpEnd&&e===this.chr&&r>.5&&r<2}overlapsRange(e,t,i){return this.chr===e&&i>=this.bpStart&&t<=this.bpEnd}}function Ol(e,t){if(!(e.length<6))return{chr:e[0],start:e[1],end:e[2],chr1:e[8],start1:Number.parseInt(e[9]),end1:Number.parseInt(e[10]),chr2:e[13],start2:Number.parseInt(e[14]),end2:Number.parseInt(e[15]),name:e[3],score:Number(e[4]),value:Number(e[5]),color:"."===e[7]?void 0:"0"===e[7]?"rgb(0,0,0)":e[7]};console.log("Skipping line: "+e.join(" "))}const Dl=new Set(["transcript","primary_transcript","processed_transcript","mRNA","mrna","lnc_RNA","miRNA","ncRNA","rRNA","scRNA","snRNA","snoRNA","tRNA"]),Pl=new Set(["CDS","cds"]),zl=new Set(["start_codon","stop_codon"]),Hl=new Set(["5UTR","3UTR","UTR","five_prime_UTR","three_prime_UTR","3'-UTR","5'-UTR"]),Ul=new Set(["exon","coding-exon"]),Vl=new Set;for(let Gw of[Pl,zl,Hl,Ul])for(let Zw of Gw)Vl.add(Zw);function ql(e){return e.includes("intron")}function jl(e){return Pl.has(e)||zl.has(e)}function $l(e){return Hl.has(e)}function Wl(e){return Dl.has(e)||e.endsWith("RNA")||e.endsWith("transcript")}function Gl(e){return Vl.has(e)||e.endsWith("RNA")||ql(e)}const Zl=new Set(["id","parent","name"]);class Ql{constructor(e){Object.assign(this,e)}popupData(e){const t=this.geneObject?this.geneObject.popupData():[];if(this.geneObject&&t.push("<hr/>"),this.name&&t.push({name:"Name",value:this.name}),t.push({name:"Type",value:this.type}),t.push({name:"Source",value:this.source}),void 0!==this.score&&t.push({name:"Score",value:this.score}),this.attributeString){const e=eh(this.attributeString,this.delim);for(let[i,n]of e)void 0!==n&&n.length>0&&!Zl.has(i.toLowerCase())&&t.push({name:i+":",value:n})}return t.push({name:"Location",value:`${this.chr}:${Wi(this.start+1)}-${Wi(this.end)}`}),t}getAttributeValue(e){if(this.hasOwnProperty(e))return this[e];if(this._attributeCache||(this._attributeCache=new Map),this._attributeCache.has(e))return this._attributeCache.get(e);{const t=eh(this.attributeString,this.delim);let i;for(let[n,r]of t)if(n===e){i=r;break}return this._attributeCache.set(e,i),i}}}class Xl extends Ql{constructor(e){super(e),this.exons=[],this.parts=[]}addExon(e){this.exons.push(e),this.start=Math.min(this.start,e.start),this.end=Math.max(this.end,e.end)}addPart(e){this.parts.push(e)}assembleParts(){if(0===this.parts.length)return;this.parts.sort((function(e,t){return e.start-t.start}));let e=this.parts[0].start,t=this.parts[0].end;for(let i=1;i<this.parts.length;i++){const n=this.parts[i];if(!ql(n.type))if(n.start<=t)t=Math.max(t,n.end);else{this.findExonContaining({start:e,end:t})||this.exons.push({start:e,end:t,psuedo:!0}),e=n.start,t=n.end}}this.findExonContaining({start:e,end:t})||(this.exons.push({start:e,end:t,psuedo:!0}),this.start=Math.min(this.start,e),this.end=Math.max(this.end,t));for(let e of this.parts){const t=e.type;jl(t)?this.addCDS(e):$l(t)&&this.addUTR(e)}}findExonContaining({start:e,end:t}){for(let i of this.exons)if(i.end>=t&&i.start<=e)return i}addCDS(e){let t;const i=this.exons;for(let n of i)if(n.start<=e.start&&n.end>=e.end){t=n;break}t?(t.cdStart=t.cdStart?Math.min(e.start,t.cdStart):e.start,t.cdEnd=t.cdEnd?Math.max(e.end,t.cdEnd):e.end):console.error("No exon found spanning "+e.start+"-"+e.end),this.cdStart=this.cdStart?Math.min(e.start,this.cdStart):e.start,this.cdEnd=this.cdEnd?Math.max(e.end,this.cdEnd):e.end}addUTR(e){let t;const i=this.exons;for(let n=0;n<i.length;n++)if(i[n].start<=e.start&&i[n].end>=e.end){t=i[n];break}t?e.start===t.start&&e.end===t.end?t.utr=!0:(e.end<t.end&&(t.cdStart=e.end),e.start>t.start&&(t.cdEnd=e.start)):console.error("No exon found spanning "+cds.start+"-"+cds.end)}finish(){this.assembleParts();var e=this.cdStart,t=this.cdEnd;this.exons.sort((function(e,t){return e.start-t.start})),e&&this.exons.forEach((function(i){(i.end<e||i.start>t)&&(i.utr=!0)}))}popupData(e){const t=super.popupData(e);for(let i of this.exons)if(!i.pseudo&&e>=i.start&&e<i.end&&"function"==typeof i.popupData){t.push("<hr/>");const n=i.popupData(e);for(let e of n)t.push(e)}for(let i of this.parts)if(e>=i.start&&e<i.end&&"function"==typeof i.popupData){t.push("<hr/>");const n=i.popupData(e);for(let e of n)t.push(e)}return t}}function Yl(e,t){const i=t.format;if(e.length<9)return;const n="gff3"===i?"=":" ";return new Ql({source:nh(e[1]),type:e[2],chr:e[0],start:parseInt(e[3])-1,end:parseInt(e[4]),score:"."===e[5]?void 0:Number(e[5]),strand:e[6],phase:"."===e[7]?0:parseInt(e[7]),attributeString:e[8],delim:n})}function Kl(e,t){const i=Yl(e,t);if(!i)return;const n=eh(i.attributeString,i.delim);for(let[e,t]of n){const n=e.toLowerCase();"color"===n||"colour"===n?i.color=Do.createColorString(t):"ID"===e?i.id=t:"Parent"===e&&(i.parent=t)}return i}function Jl(e,t){const i=Yl(e,t);if(!i)return;const n=eh(i.attributeString,i.delim);let r,s;switch(i.type){case"gene":r="gene_id";break;case"transcript":r="transcript_id",s="gene_id";break;default:s="transcript_id"}for(let[e,t]of n){const n=e.toLowerCase();"color"===n||"colour"===n?i.color=Do.createColorString(t):e===r?i.id=t:e===s&&(i.parent=t)}return i}function eh(e,t,i=!1){var n=[];for(let r of e.split(";")){r=r.trim();const e=r.indexOf(t);if(e>0&&e<r.length-1){const t=th(nh(r.substring(0,e).trim(),i));let s=th(nh(r.substring(e+1).trim(),i));n.push([t,s])}}return n}function th(e){return e.startsWith('"')&&e.endsWith('"')&&(e=e.substr(1,e.length-2)),e}const ih=new Map([["%09","\t"],["%0A","\n"],["%0D","\r"],["%25","%"],["%3B",";"],["%3D","="],["%26","&"],["%2C",","]]);function nh(e,t=!1){if(!e.includes("%"))return e;if(t)return decodeURIComponent(e);let i="";for(let t=0;t<e.length;t++)if(37===e.charCodeAt(t)&&t<e.length-2){const n=e.substring(t,t+3);ih.has(n)?i+=ih.get(n):i+=n,t+=2}else i+=e.charAt(t);return i}class rh{constructor(e){this.message=e}}function sh(e,t){if(e.length<3)return;t&&t.gffTags;const i=e[0],n=parseInt(e[1]),r=e.length>2?parseInt(e[2]):n+1;if(isNaN(n)||isNaN(r))return new rh("Unparsable bed record.");const s=new bh({chr:i,start:n,end:r,score:1e3});try{if(e.length>3){if(e[3].indexOf(";")>0&&e[3].indexOf("=")>0){const i=eh(e[3],"=",!0);s.attributes={};for(let e of i)s.attributes[e[0]]=e[1],null!=t.nameField&&e[0]===t.nameField&&(s.name=e[1])}s.name||(s.name="."===e[3]?"":e[3])}if(e.length>4&&(s.score="."===e[4]?0:Number(e[4]),isNaN(s.score)))return s;if(e.length>5&&(s.strand=e[5],"."!==s.strand&&"+"!==s.strand&&"-"!==s.strand))return s;if(e.length>6&&(s.cdStart=parseInt(e[6]),isNaN(s.cdStart)))return s;if(e.length>7&&(s.cdEnd=parseInt(e[7]),isNaN(s.cdEnd)))return s;if(e.length>8&&"."!==e[8]&&"0"!==e[8]&&(s.color=Do.createColorString(e[8])),e.length>11){const t=parseInt(e[9]);if(t>1e3)return s;const i=e[10].replace(/,$/,"").split(","),r=e[11].replace(/,$/,"").split(",");if(i.length!==r.length||t!==i.length)return s;const o=[];for(let e=0;e<t;e++){const t=n+parseInt(r[e]),s=t+parseInt(i[e]);o.push({start:t,end:s})}o.length>0&&(uh(o,s.cdStart,s.cdEnd),s.exons=o)}if(t){let i=t.thicknessColumn,n=t.colorColumn;n&&n<e.length&&(s.color=Do.createColorString(e[n])),i&&i<e.length&&(s.thickness=e[i])}}catch(e){}return s}function oh(e,t){if(e.length<=15)return;return{swScore:Number.parseInt(e[1]),milliDiv:Number.parseInt(e[2]),milliDel:Number.parseInt(e[3]),milliIns:Number.parseInt(e[4]),chr:e[5],start:Number.parseInt(e[6]),end:Number.parseInt(e[7]),strand:e[9],repName:e[10],repClass:e[11],repFamily:e[12],repStart:Number.parseInt(e[13]),repEnd:Number.parseInt(e[14]),repLeft:Number.parseInt(e[15])}}function ah(e,t){var i=void 0===t.shift?0:1;if(e.length<=9+i)return;const n=parseInt(e[5+i]),r=parseInt(e[6+i]);var s={name:e[0+i],chr:e[1+i],strand:e[2+i],start:parseInt(e[3+i]),end:parseInt(e[4+i]),cdStart:n,cdEnd:r,id:e[0+i]};const o=dh(parseInt(e[7+i]),e[8+i],e[9+i]);return uh(o,n,r),s.exons=o,s}function lh(e,t){var i=void 0===t.shift?0:1;if(e.length<=11+i)return;const n=parseInt(e[5+i]),r=parseInt(e[6+i]),s={name:e[11+i],chr:e[1+i],strand:e[2+i],start:parseInt(e[3+i]),end:parseInt(e[4+i]),cdStart:n,cdEnd:r,id:e[0+i]},o=dh(parseInt(e[7+i]),e[8+i],e[9+i]);return uh(o,n,r),s.exons=o,s}function hh(e,t){var i=void 0===t.shift?0:1;if(e.length<=10+i)return;const n=parseInt(e[6+i]),r=parseInt(e[7+i]);var s={name:e[0+i],id:e[1+i],chr:e[2+i],strand:e[3+i],start:parseInt(e[4+i]),end:parseInt(e[5+i]),cdStart:n,cdEnd:r};const o=dh(parseInt(e[8+i]),e[9+i],e[10+i]);return uh(o,n,r),s.exons=o,s}function ch(e,t){if(e.length<21)return;const i=e[13],n=parseInt(e[15]),r=parseInt(e[16]),s=e[8].charAt(0),o=parseInt(e[17]),a=[],l=e[20].replace(/,$/,"").split(","),h=e[18].replace(/,$/,"").split(",");for(let e=0;e<o;e++){const t=parseInt(l[e]),i=t+parseInt(h[e]);a.push({start:t,end:i})}return new wh({chr:i,start:n,end:r,strand:s,exons:a,tokens:e})}function dh(e,t,i){const n=parseInt(e),r=t.replace(/,$/,"").split(","),s=i.replace(/,$/,"").split(","),o=[];for(let e=0;e<n;e++){const t=parseInt(r[e]),i=parseInt(s[e]);o.push({start:t,end:i})}return o}function uh(e,t,i){for(let n of e){const e=n.end,r=n.start;e<t||r>i?n.utr=!0:(t>=r&&t<=e&&(n.cdStart=t),i>=r&&i<=e&&(n.cdEnd=i))}}function fh(e,t){var i,n,r,s,o,a,l;if(!(e.length<9))return i=e[0],n=parseInt(e[1]),r=parseInt(e[2]),o=e[3],a=Number(e[4]),s=e[5].trim(),l=Number(e[6]),0===a&&(a=l),{chr:i,start:n,end:r,name:o,score:a,strand:s,signal:l,pValue:Number(e[7]),qValue:Number(e[8])}}function ph(e,t){if(e.length<=3)return;const i={chr:e[0],start:parseInt(e[1]),end:parseInt(e[2]),value:Number(e[3])};if(t){let n=t.colorColumn;n&&n<e.length&&(i.color=Do.createColorString(e[n]))}return i}function gh(e,t){const i=t.wig;if(i&&"fixedStep"===i.format){const t=i.index*i.step+i.start,n=t+i.span,r=Number(e[0]);return++i.index,isNaN(r)?null:{chr:i.chrom,start:t,end:n,value:r}}if(i&&"variableStep"===i.format){if(e.length<2)return null;const t=parseInt(e[0],10)-1,n=t+i.span,r=Number(e[1]);return isNaN(r)?null:{chr:i.chrom,start:t,end:n,value:r}}return ph(e)}function mh(e,t){if(e.length<6)return;const i=["bin","chr","start","end","name","score","strand","refNCBI","refUCSC","observed","molType","class","valid","avHet","avHetSE","func","locType","weight","exceptions","submitterCount","submitters","alleleFreqCount","alleles","alleleNs","alleleFreqs","bitfields"],n={chr:e[1],start:Number.parseInt(e[2]),end:Number.parseInt(e[3]),name:e[4],score:Number.parseInt(e[5])},r=Math.min(e.length,i.length);for(let t=6;t<r;t++)n[i[t]]=e[t];return n}class bh{constructor(e){Object.assign(this,e)}getAttributeValue(e){return this.hasOwnProperty(e)?this[e]:this.attributes?this.attributes[e]:void 0}}class wh{constructor(e){Object.assign(this,e)}get score(){const e=this.tokens,t=parseInt(e[0]),i=parseInt(e[2]),n=parseInt(e[1]),r=parseInt(e[4]),s=parseInt(e[6]),o=parseInt(e[10]);return Math.floor(1e3*(t+i-n-r-s)/o)}get matches(){return this.tokens[0]}get misMatches(){return this.tokens[1]}get repMatches(){return this.tokens[2]}get nCount(){return this.tokens[3]}get qNumInsert(){return this.tokens[4]}get qBaseInsert(){return this.tokens[5]}get tNumInsert(){return this.tokens[6]}get tBaseInsert(){return this.tokens[7]}popupData(){return[{name:"chr",value:this.chr},{name:"start",value:this.start+1},{name:"end",value:this.end},{name:"strand",value:this.strand},{name:"score",value:this.score},{name:"match",value:this.matches},{name:"mis-match",value:this.misMatches},{name:"rep. match",value:this.repMatches},{name:"N's",value:this.nCount},{name:"Q gap count",value:this.qNumInsert},{name:"Q gap bases",value:this.qBaseInsert},{name:"T gap count",value:this.tNumInsert},{name:"T gap bases",value:this.tBaseInsert}]}}function vh(e,t){if(!(e.length<7)){var i=e[0],n=e[1],r=parseInt(e[2]),s=parseInt(e[3]),o=parseInt(e[4]),a=parseInt(e[5]),l=e[6],h={chr:i,name:n,junction_left:r,junction_right:s,num_junction_reads:o,num_spanning_frags:a,spanning_frag_coords:[],start:-1,end:-1},c=r,d=s;if(a>0)for(var u=l.split(","),f=0;f<u.length;f++){var p=u[f].split("-"),g=p[0],m=p[1];g<c&&(c=g),m>d&&(d=m),h.spanning_frag_coords.push({left:g,right:m})}return h.start=c,h.end=d,h}}function yh(e,t){if(e.length<7)return null;const i={chr:e[0],start:parseInt(e[1])-1,end:parseInt(e[2]),"Strongest SNP-risk allele":e[3],"Disease/Phenotype":e[4],"P-value":e[5],"Odds ratio or beta":e[6]};return e.length>6&&(i.PUBMEDID=`<a target = "blank" href = "https://www.ncbi.nlm.nih.gov/pubmed/${e[7]}">${e[7]}</a>`),i}function _h(e,t){const i=t.customFormat;if(e.length<i.fields.length)return;const n=i.coords||0,r=e[i.chr],s=parseInt(e[i.start])-n,o={chr:r,start:s,end:void 0!==i.end?parseInt(e[i.end]):s+1};return i.fields&&i.fields.forEach((function(t,n){n!==i.chr&&n!==i.start&&n!==i.end&&(o[t]=e[n])})),o}function xh(e,t){const i=t.columnNames;if(!i)throw Error("Sample names are not defined.   Missing column headers?");const n=i.length-3,r=e[0],s=parseInt(e[1]),o=parseInt(e[2]),a=e.slice(3).map(Number);return a.length==n?{chr:r,start:s,end:o,values:a}:void console.warn(`${r}:${s}-${o} row contains ${a.length} sample columns instead of the expected ${n} columns. Skipping...`)}class kh{constructor(e){this.config=e,this.header={},e.nameField&&(this.header.nameField=e.nameField),this.skipRows=0,e.decode?(this.decode=e.decode,this.delimiter=e.delimiter||"\t"):e.format&&(this.header.format=e.format.toLowerCase(),this.setDecoder(this.header.format)),this.delimiter||(this.delimiter="\t")}async parseHeader(e){let t,i,n=this.header;for(;void 0!==(i=await e.nextLine());)if(i.startsWith("track")||i.startsWith("#track")){let e=Ch(i);Object.assign(n,e)}else if(i.startsWith("browser"));else if(i.startsWith("#columns")){let e=Sh(i);Object.assign(n,e)}else if(i.startsWith("##gff-version 3"))n.format="gff3";else if(i.startsWith("#gffTags"))n.gffTags=!0;else{if(i.startsWith("fixedStep")||i.startsWith("variableStep"))break;if(i.startsWith("#")){const e=i.split(this.delimiter||"\t");e.length>1&&(t=e)}else{this.setDecoder(n.format);const e=i.split(this.delimiter||"\t");try{const i=Object.assign({columnNames:t},n);if(this.decode(e,i))break;e.length>1&&(t=e)}catch(i){e.length>1&&(t=e)}}}if(t){n.columnNames=t;for(let e=0;e<t.length;e++)"color"===t[e]||"colour"===t[e]?n.colorColumn=e:"thickness"===t[e]&&(n.thicknessColumn=e)}return this.header=n,n}async parseFeatures(e){const t=[],i=this.decode,n=this.header.format,r=this.delimiter||"\t";let s,o=0,a=0;for(;void 0!==(s=await e.nextLine());){if(o++,o<=this.skipRows)continue;if(!s||s.startsWith("track")||s.startsWith("#")||s.startsWith("browser"))continue;if("wig"===n&&s.startsWith("fixedStep")){this.header.wig=Ah(s);continue}if("wig"===n&&s.startsWith("variableStep")){this.header.wig=Eh(s);continue}const e=s.split(r);if(e.length<1)continue;const l=i(e,this.header);l instanceof rh?(a++,a>0&&console.error(`Error parsing line '${s}': ${l.message}`)):l&&t.push(l)}return i===Ba&&function(e){if(0==e.length)return;const t=e[0];if(void 0===t.score&&void 0!==t.name){for(let t of e)if(!("number"==typeof(i=t.name)?i-i==0:"string"==typeof i&&""!==i.trim()&&(Number.isFinite?Number.isFinite(+i):isFinite(+i)))&&"."!==t.name)return;for(let t of e)t.score=Number(t.name),delete t.name}var i;const n=e.filter((e=>e.chr1!==e.chr2));for(let t of n){const i=Object.assign({},t);i.dup=!0,e.push(i),t.chr=t.chr1,t.start=t.start1,t.end=t.end1,i.chr=i.chr2,i.start=i.start2,i.end=i.end2}}(t),t}setDecoder(e){switch(e){case"narrowpeak":case"broadpeak":case"regionpeak":case"peaks":this.decode=fh,this.delimiter=this.config.delimiter||/\s+/;break;case"bedgraph":this.decode=ph,this.delimiter=/\s+/;break;case"wig":this.decode=gh,this.delimiter=this.config.delimiter||/\s+/;break;case"gff3":case"gff":this.decode=Kl,this.delimiter="\t";break;case"gtf":this.decode=Jl,this.delimiter="\t";break;case"fusionjuncspan":this.decode=vh,this.delimiter=this.config.delimiter||/\s+/;break;case"gtexgwas":this.skipRows=1,this.decode=yh,this.delimiter="\t";break;case"refflat":this.decode=hh,this.delimiter=this.config.delimiter||/\s+/;break;case"genepred":this.decode=ah,this.delimiter=this.config.delimiter||/\s+/;break;case"genepredext":this.decode=lh,this.delimiter=this.config.delimiter||/\s+/;break;case"ensgene":this.decode=ah,this.header.shift=1,this.delimiter=this.config.delimiter||/\s+/;break;case"refgene":this.decode=lh,this.delimiter=this.config.delimiter||/\s+/,this.header.shift=1;break;case"bed":this.decode=sh,this.delimiter=this.config.delimiter||/\s+/;break;case"bedpe":case"hiccups":this.decode=Ba,this.delimiter=this.config.delimiter||"\t";break;case"bedpe-domain":this.decode=Oa,this.headerLine=!0,this.delimiter=this.config.delimiter||"\t";break;case"bedpe-loop":this.decode=Ba,this.delimiter=this.config.delimiter||"\t",this.header={colorColumn:7};break;case"interact":this.decode=Ol,this.delimiter=this.config.delimiter||/\s+/;break;case"snp":this.decode=mh,this.delimiter="\t";break;case"rmsk":this.decode=oh,this.delimiter="\t";break;case"gcnv":this.decode=xh,this.delimiter="\t";break;default:const t=za(e);void 0!==t?(this.decode=_h,this.header.customFormat=t,this.delimiter=t.delimiter||"\t"):(this.decode=sh,this.delimiter=this.config.delimiter||/\s+/)}}}function Ch(e){const t={},i=e.split(/(?:")([^"]+)(?:")|([^\s"]+)(?=\s+|$)/g);let n;const r=[];for(let e of i)e&&0!==e.trim().length&&(e.endsWith("=")?n=e:n?(r.push(n+e),n=void 0):r.push(e));for(let e of r){if(!e)return;var s=e.split("=",2);if(2===s.length){const e=s[0].trim(),i=s[1].trim();if(t.hasOwnProperty(e)){let n=t[e];Array.isArray(n)?n.push(i):t[e]=[n,i]}else t[e]=i}}return"interact"==t.type?t.format="interact":"gcnv"===t.type&&(t.format="gcnv"),t}function Sh(e){let t={},i=e.split(/\s+/);if(2===i.length){i[1].split(";").forEach((function(e){let i=e.split("=");"color"===i[0]?t.colorColumn=Number.parseInt(i[1])-1:"thickness"===i[0]&&(t.thicknessColumn=Number.parseInt(i[1])-1)}))}return t}function Ah(e){const t=e.split(/\s+/);return{format:"fixedStep",chrom:t[1].split("=")[1],start:parseInt(t[2].split("=")[1],10)-1,step:parseInt(t[3].split("=")[1],10),span:t.length>4?parseInt(t[4].split("=")[1],10):1,index:0}}function Eh(e){const t=e.split(/\s+/);return{format:"variableStep",chrom:t[1].split("=")[1],span:t.length>2?parseInt(t[2].split("=")[1],10):1}}class Th{static defaults={height:50,autoHeight:!1,visibilityWindow:void 0,color:void 0,altColor:void 0,supportHiDPI:!0};constructor(e,t){this.browser=t,this.init(e)}init(e){this.config=e,e.displayMode&&(e.displayMode=e.displayMode.toUpperCase());const t=Object.assign({},Th.defaults);if(this.constructor.defaults)for(let e of Object.keys(this.constructor.defaults))t[e]=this.constructor.defaults[e];for(let n of Object.keys(t))this[n]=e.hasOwnProperty(n)?e[n]:t[n],"color"!==n&&"altColor"!==n||(this[n]=$i(i=this[n])&&i.indexOf(",")>0&&!i.startsWith("rgb(")&&!i.startsWith("rgba(")?`rgb(${i})`:i);var i;e.name||e.label?this.name=e.name||e.label:Yi(e.url)?this.name=e.url.name:$i(e.url)&&!e.url.startsWith("data:")&&(this.name=Xi(e.url)),this.url=e.url,this.config.type&&(this.type=this.config.type),this.id=void 0===this.config.id?this.name:this.config.id,this.order=e.order,this.autoscaleGroup=e.autoscaleGroup,this.removable=void 0===e.removable||e.removable,this.minHeight=e.minHeight||Math.min(25,this.height),this.maxHeight=e.maxHeight||Math.max(1e3,this.height),e.onclick&&(this.onclick=e.onclick,e.onclick=void 0),e.description&&("function"==typeof e.description?this.description=e.description:this.description=()=>e.description),e.hoverTextFields?this.hoverText=Mh.bind(this):"function"==typeof this.config.hoverText&&(this.hoverText=this.config.hoverText)}get name(){return this._name}set name(e){this._name=e,this.trackView&&this.trackView.setTrackLabelName(e)}updateConfig(e){this.init(e)}clearCachedFeatures(){this.trackView&&this.trackView.clearCachedFeatures()}updateViews(){this.trackView&&this.trackView.updateViews()}getState(){const e={};for(let i of Object.keys(this.config))i.startsWith("_")||(void 0===(t=this.config[i])||"function"==typeof t||t instanceof File||t instanceof Promise)||(e[i]=this.config[i]);var t;for(let t of Object.keys(e)){if(t.startsWith("_"))continue;const i=this[t];i&&(Ca(i)||"boolean"==typeof i||"metadata"===t)&&(e[t]=i)}const i=Th.defaults;if(this.constructor.defaults)for(let e of Object.keys(this.constructor.defaults))i[e]=this.constructor.defaults[e];for(let t of Object.keys(i))void 0!==this[t]&&i[t]!==this[t]&&(e[t]=this[t]);return!this.autoscale&&this.dataRange&&(e.min=this.dataRange.min,e.max=this.dataRange.max),e}get supportsWholeGenome(){return!0===this.config.supportsWholeGenome}hasSamples(){return!1}getGenomeId(){return this.browser.genome?this.browser.genome.id:void 0}setTrackProperties(e){if(this.disposed)return;const t={};let i;for(let n of Object.keys(e))switch(n.toLowerCase()){case"usescore":t.useScore=1===e[n]||"1"===e[n]||"on"===e[n]||!0===e[n];break;case"visibility":switch(e[n]){case"2":case"3":case"pack":case"full":t.displayMode="EXPANDED";break;case"4":case"squish":t.displayMode="SQUISHED";break;case"1":case"dense":t.displayMode="COLLAPSED"}break;case"color":case"altcolor":t[n]=e[n].startsWith("rgb(")?e[n]:"rgb("+e[n]+")";break;case"featurevisiblitywindow":case"visibilitywindow":t.visibilityWindow=Number.parseInt(e[n]);break;case"maxheightpixels":i=e[n].split(":"),3===i.length&&(t.minHeight=Number.parseInt(i[2]),t.height=Number.parseInt(i[1]),t.maxHeight=Number.parseInt(i[0]));break;case"viewlimits":if(!this.config.autoscale){i=e[n].split(":");let r,s=0;1==i.length?r=Number(i[0]):2==i.length&&(s=Number(i[0]),r=Number(i[1])),t.autoscale=!1,t.dataRange={min:s,max:r},this.viewLimitMin=s,this.viewLimitMax=r}case"name":t[n]=e[n];break;case"url":t.infoURL=e[n];break;case"type":const r=e[n];Rh.has(r)?t[n]=Rh.get(r):t[n]=r;break;case"graphtype":t.graphType=e[n];break;default:t[n]=e[n]}for(let e of Object.keys(t))if(!this.config.hasOwnProperty(e)||"name"===e&&this.config._derivedName){let i=t[e];if("true"===i&&(i=!0),"false"===i&&(i=!1),this[e]=i,"height"===e&&this.trackView)try{const e=Number.parseInt(i);this.trackView.setTrackHeight(e)}catch(e){console.error(e)}}}clickedFeatures(e){const t=e.viewport.cachedFeatures;if(!t||!Array.isArray(t)||0===t.length)return[];const i=e.genomicLocation,n=e.referenceFrame.bpPerPixel>.2?3*e.referenceFrame.bpPerPixel:.2;return fa(t,i-n,i+n)}extractPopupData(e,t){const i=new Set(["row","color","chr","start","end","cdStart","cdEnd","strand","alpha"]),n=[];let r,s;for(let t in e)if(e.hasOwnProperty(t)&&!i.has(t)&&Ca(e[t])){let i=e[t];n.push({name:Qi(t),value:i}),"alleles"===t?r=e[t]:"alleleFreqs"===t&&(s=e[t])}if(r&&s){r.endsWith(",")&&(r=r.substr(0,r.length-1)),s.endsWith(",")&&(s=s.substr(0,s.length-1));let i=r.split(","),o=s.split(",");if(o.length>1){let r=[];for(let e=0;e<o.length;e++)r.push({a:i[e],af:Number(o[e])});r.sort((function(e,t){return e.af-t.af}));let s=r[r.length-1].a;if(1===s.length)for(let i=r.length-2;i>=0;i--){let o=r[i].a;if(1===o.length){t||(t=this.getGenomeId());const i=Th.getCravatLink(e.chr,e.start+1,s,o,t);console.log(i),i&&(n.push("<hr/>"),n.push({html:i}),n.push("<hr/>"))}}}}if(e.attributes)for(let t of Object.keys(e.attributes))n.push({name:t,value:e.attributes[t]});let o=`${e.chr}:${Wi(e.start+1)}-${Wi(e.end)}`;return e.strand&&(o+=` (${e.strand})`),n.push({name:"Location",value:o}),n}description(){const e=(e,t)=>`<div class="igv-track-label-popup-shim"><b>${e}: </b>${t}</div>`;let t='<div class="igv-track-label-popup">';if(this.url?Yi(this.url)?t+=e("Filename",this.url.name):t+=e("URL",this.url):t=this.name,this.config){if(this.config.metadata)for(let i of Object.keys(this.config.metadata)){t+=e(i,this.config.metadata[i])}for(let i of Object.keys(this.config)){if(i.startsWith("_"))continue;let n=i.substr(0,1);if(n!==n.toLowerCase()){const n=this.config[i];n&&Ca(n)&&(t+=e(i,n))}}}return t+="</div>",t}getColorForFeature(e){return"function"==typeof this.color?this.color(feature):this.color}dispose(){this.disposed=!0;for(let e of Object.keys(this))this[e]=void 0}static getCravatLink(e,t,i,n,r){if("hg38"===r||"GRCh38"===r){return`<a target="_blank" href="https://run.opencravat.org/result/nocache/variant.html?chrom=${e.startsWith("chr")?e:"chr"+e}&pos=${t}&ref_base=${i}&alt_base=${n}"><b>Cravat ${i}->${n}</b></a>`}}}function Mh(e){if(!this.hoverTextFields)return;const t=this.clickedFeatures(e);if(t&&t.length>0){let e="";for(let i=0;i<t.length;i++){if(10===i){e+="; ...";break}if(!t[i])continue;const n=t[i]._f||t[i];e.length>0&&(e+="\n"),e="";for(let t of this.hoverTextFields)e.length>0&&(e+="\n"),n.hasOwnProperty(t)?e+=n[t]:"function"==typeof n.getAttribute&&(e+=n.getAttribute(t))}return e}}const Rh=new Map([["wiggle_0","wig"],["bed","bed"],["bigBed","bigBed"],["bigWig","bigWig"]]);class Lh{constructor(e){switch(this.type=e||"seg",this.type){case"mut":this.sampleColumn=3,this.chrColumn=0,this.startColumn=1,this.endColumn=2,this.dataColumn=4;break;case"maf":this.sampleColumn=15,this.chrColumn=4,this.startColumn=5,this.endColumn=6,this.dataColumn=8;break;default:this.sampleColumn=0,this.chrColumn=1,this.startColumn=2,this.endColumn=3}}async parseHeader(e){let t;for(;void 0!==(t=await e.nextLine());)if(!t.startsWith("#")){const e=t.split("\t");this.header={headings:e};break}return this.header}async parseFeatures(e){const t=[];let i;this.header||(this.header=await this.parseHeader(e)),"seg"===this.type&&(this.dataColumn=this.header.headings.length-1),this.header.headings.length>5&&(i=this.extractExtraColumns(this.header.headings));const n=this.header.headings[this.dataColumn];let r;for(;void 0!==(r=await e.nextLine());){const e=r.split("\t"),s="seg"===this.type?Number(e[this.dataColumn]):e[this.dataColumn];if(e.length>this.dataColumn){const r=new Ih({sample:e[this.sampleColumn],chr:e[this.chrColumn],start:parseInt(e[this.startColumn])-1,end:parseInt(e[this.endColumn]),value:s,valueColumnName:n});if(i){const t=this.extractExtraColumns(e);r.setAttributes({names:i,values:t})}t.push(r)}}return t}extractExtraColumns(e){const t=[];for(let i=0;i<e.length;i++)i!==this.chrColumn&&i!==this.startColumn&&i!==this.endColumn&&i!==this.sampleColumn&&t.push(e[i]);return t}}class Ih{constructor({sample:e,chr:t,start:i,end:n,value:r,valueColumnName:s}){this.sample=e,this.chr=t,this.start=i,this.end=n,this.value=r,this.valueColumnName=s}setAttributes({names:e,values:t}){this.attributeNames=e,this.attributeValues=t}getAttribute(e){if(this.attributeNames){const t=this.attributeNames.indexOf(e);if(t>=0)return this.attributeValues[t]}}popupData(e,t){const i=new Set(["chr","start","end","sample","value","row","color","sampleKey","uniqueSampleKey","sampleId","chromosome","uniquePatientKey"]),n=this.chr+":"+Wi(this.start+1)+"-"+Wi(this.end),r=[{name:"Sample",value:this.sample},{name:"Location",value:n},{name:this.valueColumnName?Qi(this.valueColumnName):"Value",value:this.value}];if("mut"===e&&"hg38"===t){const e=this.extractCravatLink(t);e&&(r.push("<hr/>"),r.push({html:e}),r.push("<hr/>"))}if(this.attributeNames&&this.attributeNames.length>0)for(let e=0;e<this.attributeNames.length;e++)!i.has(this.attributeNames[e])&this.valueColumnName!==this.attributeNames[e]&&r.push({name:Qi(this.attributeNames[e]),value:this.attributeValues[e]});return r}extractCravatLink(e){let t,i;if(this.attributeNames&&this.attributeNames.length>0)for(let n=0;n<this.attributeNames.length;n++)if(t||"Reference_Allele"!==this.attributeNames[n]||(t=this.attributeValues[n]),!i&&this.attributeNames[n].startsWith("Tumor_Seq_Allele")&&this.attributeValues[n]!==t&&(i=this.attributeValues[n]),t&&i)return Th.getCravatLink(this.chr,this.start+1,t,i,e)}}function Nh(e){const t=new Fh;t.chr=e[0],t.pos=parseInt(e[1]),t.names=e[2],t.referenceBases=e[3],t.alternateBases=e[4],t.quality=e[5],t.filter=e[6],t.info={};const i=e[7];if(i)for(let e of i.split(";")){var n=e.split("=");t.info[n[0]]=n[1]}return t.init(),t}class Fh{init(){const e=this.referenceBases,t=this.alternateBases;if(this.info&&(this.info.VT?this.type=this.info.VT:this.info.SVTYPE?this.type="SV":this.info.PERIOD&&(this.type="STR")),void 0===this.type&&(this.type=function(e,t){const i=e.length;if(void 0===t)return"UNKNOWN";if(0===t.trim().length||"<NON_REF>"===t||"<*>"===t||"."===t)return"NONVARIANT";{const e=t.split(",").map((function(e){return 1===i&&1===e.length?"SNP":"<NON_REF>"===e?"NONVARIANT":"OTHER"}));let n=e[0];for(let t of e)if(t!==n)return"MIXED";return n}}(e,t)),"NONVARIANT"===this.type&&(this.heterozygosity=0),this.info.END)this.start=this.pos-1,this.info.CHR2&&this.info.CHR2!==this.chr?this.end=this.start+1:this.end=Number.parseInt(this.info.END);else if("NONVARIANT"===this.type)this.start=this.pos-1,this.end=this.start+e.length;else{const i=t.split(",").filter((e=>e.length>0));this.alleles=[],this.start=void 0,this.end=void 0;for(let t of i)if(this.alleles.push(t),"SV"!==this.type&&Oh(t)){let i=t.length,n=e.length;const r=Math.min(i,n);let s=0;for(;s<r&&e.charCodeAt(s)===t.charCodeAt(s);)s++,i--,n--;for(;i>0&&n>0;){const r=s+i-1,o=s+n-1;if(t.charCodeAt(r)!==e.charCodeAt(o))break;i--,n--}for(;i>0&&n>0;){const r=s,o=s;if(t.charCodeAt(r)!==e.charCodeAt(o))break;s++,i--,n--}const o=this.pos+s-1,a=o+n;this.start=void 0===this.start?o:Math.min(this.start,o),this.end=void 0===this.end?a:Math.max(this.end,a)}void 0===this.start&&(this.start=this.pos-1,this.end=this.pos)}}popupData(e,t){const i=`${Wi(this.pos)}`,n=this.start===this.end?`${Wi(this.start)} | ${Wi(this.start+1)}`:`${Wi(this.start+1)}-${Wi(this.end)}`,r=[{name:"Chr",value:this.chr},{name:"Pos",value:i},{name:"Loc",value:n},{name:"ID",value:this.names?this.names:""},{name:"Ref",value:this.referenceBases},{name:"Alt",value:this.alternateBases.replace("<","&lt;")},{name:"Qual",value:this.quality},{name:"Filter",value:this.filter}];if("SNP"===this.type){let e=this.referenceBases;if(1===e.length){let i=this.alternateBases.split(",");for(let n of i)if(1===n.length){let i=Th.getCravatLink(this.chr,this.pos,e,n,t);i&&(r.push("<hr/>"),r.push({html:i}))}}}if(this.hasOwnProperty("heterozygosity")&&r.push({name:"Heterozygosity",value:this.heterozygosity}),this.info){r.push({html:'<hr style="border-top: dotted 1px;border-color: #c9c3ba" />'});for(let e of Object.keys(this.info))r.push({name:e,value:Dh(decodeURIComponent(this.info[e]))})}return r}getInfo(e){return this.info?this.info[e]:void 0}isRefBlock(){return"NONVARIANT"===this.type}}const Bh=new Set(["A","C","T","G"].map((e=>e.charCodeAt(0))));function Oh(e){for(let t=0;t<e.length;t++)if(!Bh.has(e.charCodeAt(t)))return!1;return!0}function Dh(e,t){return void 0===t&&(t=","),Array.isArray(e)?e.join(t):e}class Ph{construtor(){}async parseHeader(e,t){const i={};i.chrAliasTable=new Map;let n=await e.nextLine();if(!n.startsWith("##fileformat"))throw new Error("Invalid VCF file: missing fileformat line");for(i.version=n.substr(13);void 0!==(n=await e.nextLine())&&n.startsWith("#");){let e;const s={};if(n.startsWith("##")){if(n.startsWith("##INFO")||n.startsWith("##FILTER")||n.startsWith("##FORMAT")){const t=n.indexOf("<"),o=n.lastIndexOf(">");if(!(t>2&&o>0)){console.log("Malformed VCF header line: "+n);continue}const a=n.substring(2,t-1);i[a]||(i[a]={});const l=Zi(n.substring(t+1,o-1),",");for(let t of l){var r=t.split("=");r.length>1&&("ID"===r[0]?e=r[1]:s[r[0]]=r[1])}e&&(i[a][e]=s)}else if(n.startsWith("##contig")&&t){const e=n.indexOf("<ID=");let r=n.indexOf(",",e);-1==r&&(r=n.indexOf(">",e));const s=n.substring(e+4,r),o=t.getChromosomeName(s);i.chrAliasTable.set(o,s)}}else if(n.startsWith("#CHROM")){const e=n.split("\t");if(e.length>8){i.callSets=[];for(let t=9;t<e.length;t++)i.callSets.push({id:t,name:e[t]})}}}return this.header=i,i}async parseFeatures(e){const t=[],i=this.header.callSets,n=8+(i?i.length+1:0);let r;for(;void 0!==(r=await e.nextLine());)if(r&&!r.startsWith("#")){const e=r.split("\t");if(e.length===n){const n=Nh(e);if(n.header=this.header,t.push(n),e.length>9){const t=zh(e[8].split(":"));n.calls={};for(let r=9;r<e.length;r++){const s=e[r],o=i[r-9],a={callSetName:o.name,info:{}};n.calls[o.id]=a,s.split(":").forEach((function(e,i){if(i===t.genotypeIndex)a.genotype=[],e.split(/[\|\/]/).forEach((function(e){a.genotype.push("."===e?e:parseInt(e))}));else a.info[t.fields[i]]=e}))}}n.info&&n.info.CHR2&&n.info.END&&t.push(Hh(n))}}return t}}function zh(e){const t={genotypeIndex:-1,fields:e};for(let i=0;i<e.length;i++)"GT"===e[i]&&(t.genotypeIndex=i);return t}function Hh(e){const t=e.info.CHR2,i=Number.parseInt(e.info.END);return{chr:t,start:i-1,end:i,_f:e}}class Uh{constructor(e){if(this.config=e,e.columns){if(void 0===e.columns.chromosome||void 0===e.columns.position||void 0===e.columns.value)throw Error("columns property must define chrCol, posCol, and valueCol");this.posCol=e.columns.position-1,this.chrCol=e.columns.chromosome-1,this.valueCol=e.columns.value-1}else this.posCol=2,this.chrCol=1,this.valueCol=3}async parseHeader(e){const t=await e.nextLine();return this.parseHeaderLine(t)}parseHeaderLine(e){if(this.columns=e.split(/\t/),!this.config.columns)for(let e=0;e<this.columns.length;e++){switch(this.columns[e].toLowerCase()){case"chr":case"chromosome":case"chr_id":this.chrCol=e;break;case"bp":case"pos":case"position":case"chr_pos":this.posCol=e;break;case"p":case"pval":case"pvalue":case"p-value":case"p.value":this.valueCol=e}}return this.columns}async parseFeatures(e){const t=[],i=e.nextLine();let n;for(this.columns||this.parseHeaderLine(i);void 0!==(n=e.nextLine());){const e=n.split(/\t/);if(e.length===this.columns.length){const i=e[this.chrCol],r=parseInt(e[this.posCol])-1,s=r+1,o=Number(e[this.valueCol]);t.push(new Vh({chr:i,start:r,end:s,value:o,line:n,columns:this.columns}))}}return t}}class Vh{constructor({chr:e,start:t,end:i,value:n,line:r,columns:s}){this.chr=e,this.start=t,this.end=i,this.value=n,this.line=r,this.columns=s}popupData(){const e=this.line.split(/\t/);return this.columns.map((function(t,i){return{name:t,value:e[i]}}))}getAttribute(e){const t=this.line.split(/\t/);for(let i=0;i<this.columns.length;i++)if(this.columns[i]===e)return t[i]}}var qh=new RegExp("([^:]*)\\(([^)]*)\\)"),jh=new RegExp("([^:]*):([^(]*)\\(([^)]*)\\)");class $h{constructor(e){const t=e?e.decode:void 0;this.nameField=e?e.nameField:void 0,this.skipRows=0,this.decode=t||Yh,this.delimiter="\t"}async parseHeader(e){let t,i;for(;(t=await e.nextLine())&&(t.startsWith("track")||t.startsWith("#")||t.startsWith("browser"));)if(t.startsWith("track")||t.startsWith("#track")){let e=Zh(t);i?Object.assign(i,e):i=e}else if(t.startsWith("#columns")){let e=Qh(t);i?Object.assign(i,e):i=e}else t.startsWith("##gff-version 3")&&(this.format="gff3",i||(i={}),i.format="gff3");return this.header=i,i}async parseFeatures(e){const t=[],i=this.decode,n=this.delimiter||"\t";let r,s=0;for(;void 0!==(r=e.nextLine());){if(s++,s<=this.skipRows||r.startsWith("track")||r.startsWith("#")||r.startsWith("browser"))continue;let e=o();if(e.length<1)continue;if(!this.aed){this.aed=Gh(e);continue}const n=i.call(this,e,undefined);n&&t.push(n)}return t;function o(){for(var e,t,i=[],s="",o=!1;r||""===r;){for(e=0;e<r.length;e++)(t=r.charAt(e))===n?o?s+=t:(i.push(s),s=""):'"'===t?e+1<r.length&&'"'===r.charAt(e+1)?(o&&(s+='"'),e++):o=!o:s+=t;if(!o)break;s+="\n",r=nextLine()}return i.push(s),i}}}function Wh(e){var t=jh.exec(e);if(t)return{namespace:t[1],name:t[2],type:t[3]};if(t=qh.exec(e))return{namespace:"?",name:t[1],type:t[2]};throw new Error("Error parsing the header row of AED file - column not in ns:name(ns:type) format")}function Gh(e){var t,i,n;for(t={columns:[],metadata:{}},i=0;i<e.length;i++)n=Wh(e[i]),t.columns.push(n);return t}function Zh(e){const t={},i=e.split(/(?:")([^"]+)(?:")|([^\s"]+)(?=\s+|$)/g);let n;const r=[];for(let e of i)e&&0!==e.trim().length&&(e.endsWith("=")>0?n=e:n?(r.push(n+e),n=void 0):r.push(e));for(let e of r){if(!e)return;var s=e.split("=",2);if(2===s.length){const e=s[0].trim(),i=s[1].trim();t[e]=i}}return t}function Qh(e){let t={},i=e.split(/\s+/);if(2===i.length){i[1].split(";").forEach((function(e){let i=e.split("=");"color"===i[0]?t.colorColumn=Number.parseInt(i[1])-1:"thickness"===i[0]&&(t.thicknessColumn=Number.parseInt(i[1])-1)}))}return t}function Xh(e,t){var i,n,r=e.columns;this.aed=e,this.allColumns=t,this.chr=null,this.start=null,this.end=null,this.score=1e3,this.strand=".",this.cdStart=null,this.cdEnd=null,this.name=null,this.color=null;for(let e=0;e<t.length;e++)if(i=t[e]){"aed:Integer"===(n=r[e]).type&&(i=parseInt(i));var s=[];if(n.namespace.length>0)for(let e=0;e<n.namespace.length;e++)s.push(n.namespace.charCodeAt(e));"bio"===n.namespace.trim()?"sequence"===n.name?this.chr=i:"start"===n.name?this.start=i:"end"===n.name?this.end=i:"cdsMin"===n.name?this.cdStart=i:"cdsMax"===n.name?this.cdEnd=i:"strand"===n.name&&(this.strand=i):"aed"===n.namespace?"name"===n.name&&(this.name=i):"style"===n.namespace&&"color"===n.name&&(this.color=Do.createColorString(i))}}function Yh(e,t){var i,n,r,s,o,a,l=0,h=this.aed.columns;if(e.length===h.length){for(a=0;a<e.length;a++)s=h[a],""!==(r=e[a])&&l++,"name"===s.name&&"aed"===s.namespace?i=r:"value"===s.name&&"aed"===s.namespace&&(n=r);if(2===l&&i&&n)return o=Wh(i),this.aed.metadata[o.namespace]||(this.aed.metadata[o.namespace]={}),void(this.aed.metadata[o.namespace][o.name]||(this.aed.metadata[o.namespace][o.name]={type:o.type,value:n}));var c=new Xh(this.aed,e);if(c.chr&&(c.start||0===c.start)&&c.end)return c;console.log("Cannot parse feature: "+e.join(","))}else console.log("Corrupted AED file row: "+e.join(","))}Xh.prototype.popupData=function(){for(var e=[],t=this.aed,i=0;i<this.allColumns.length;i++){var n=this.allColumns[i],r=t.columns[i].name;"sequence"!==r&&"color"!==r&&n&&e.push({name:r,value:n})}return e};class Kh{constructor(e,t){this.littleEndian=void 0===t||t,this.position=0,this.view=e,this.length=e.byteLength}available(){return this.length-this.position}remLength(){return this.length-this.position}hasNext(){return this.position<this.length-1}getByte(){var e=this.view.getUint8(this.position,this.littleEndian);return this.position++,e}getShort(){var e=this.view.getInt16(this.position,this.littleEndian);return this.position+=2,e}getUShort(){var e=this.view.getUint16(this.position,this.littleEndian);return this.position+=2,e}getInt(){var e=this.view.getInt32(this.position,this.littleEndian);return this.position+=4,e}getUInt(){var e=this.view.getUint32(this.position,this.littleEndian);return this.position+=4,e}getLong(){var e=[];e[0]=this.view.getUint8(this.position),e[1]=this.view.getUint8(this.position+1),e[2]=this.view.getUint8(this.position+2),e[3]=this.view.getUint8(this.position+3),e[4]=this.view.getUint8(this.position+4),e[5]=this.view.getUint8(this.position+5),e[6]=this.view.getUint8(this.position+6),e[7]=this.view.getUint8(this.position+7);var t=0;if(this.littleEndian)for(let i=e.length-1;i>=0;i--)t=256*t+e[i];else for(let i=0;i<e.length;i++)t=256*t+e[i];return this.position+=8,t}getString(e){for(var t,i="";0!==(t=this.view.getUint8(this.position++))&&(i+=String.fromCharCode(t),!e||i.length!==e););return i}getFixedLengthString(e){var t,i,n="";for(t=0;t<e;t++)(i=this.view.getUint8(this.position++))>0&&(n+=String.fromCharCode(i));return n}getFixedLengthTrimmedString(e){var t,i,n="";for(t=0;t<e;t++)(i=this.view.getUint8(this.position++))>32&&(n+=String.fromCharCode(i));return n}getFloat(){var e=this.view.getFloat32(this.position,this.littleEndian);return this.position+=4,e}getDouble(){var e=this.view.getFloat64(this.position,this.littleEndian);return this.position+=8,e}skip(e){return this.position+=e,this.position}getVPointer(){var e=this.position,t=this.view.getUint8(e+1)<<8|this.view.getUint8(e),i=4294967296*(255&this.view.getUint8(e+6))+16777216*(255&this.view.getUint8(e+5))+65536*(255&this.view.getUint8(e+4))+256*(255&this.view.getUint8(e+3))+(255&this.view.getUint8(e+2));return this.position+=8,new Jh(i,t)}}class Jh{constructor(e,t){this.block=e,this.offset=t}isLessThan(e){return this.block<e.block||this.block===e.block&&this.offset<e.offset}isGreaterThan(e){return this.block>e.block||this.block===e.block&&this.offset>e.offset}isEqualTo(e){return this.block===e.block&&this.offset===e.offset}print(){return this.block+":"+this.offset}}function ec(e,t){if(0===e.length)return e;if(e.sort((function(e,t){const i=e.minv.block-t.minv.block;return 0!==i?i:e.minv.offset-t.minv.offset})),e.length<=1)return e;t&&(e=e.filter((e=>e.maxv.isGreaterThan(t))));const i=[];let n;for(let t of e)n&&tc(n,t)?t.maxv.isGreaterThan(n.maxv)&&(n.maxv=t.maxv):(i.push(t),n=t);return i}function tc(e,t){t.minv.block,e.maxv.block;return e.maxv.block-e.minv.block<5e6}class ic{constructor(e){this.tabix=!0}parse(e,t){const i=new Kh(new DataView(e)),n=i.getInt();if(21582659!==n)throw 38359875===n?Error("CSI version 2 is not supported.  Please enter an issue at https://github.com/igvteam/igv.js"):Error("Not a CSI index");this.indices=[],this.blockMin=Number.MAX_SAFE_INTEGER,this.lastBlockPosition=[],this.sequenceIndexMap={},this.minShift=i.getInt(),this.depth=i.getInt();const r=[];let s=0;if(i.getInt()>=28){i.getInt(),i.getInt(),i.getInt(),i.getInt(),i.getInt(),i.getInt();const e=i.getInt(),n=i.position+e;let s=0;for(;i.position<n;){let e=i.getString();t&&(e=t.getChromosomeName(e)),this.sequenceIndexMap[e]=s,r[s]=e,s++}}const o=this.bin_limit()+1,a=i.getInt();for(let e=0;e<a;e++){const t=[],n=[],r=i.getInt();for(let e=0;e<r;e++){const e=i.getInt();if(n[e]=i.getVPointer(),e>o)i.getInt(),i.getVPointer(),i.getVPointer(),i.getLong(),i.getLong();else{t[e]=[];const n=i.getInt();for(let r=0;r<n;r++){const n=i.getVPointer(),r=i.getVPointer();n&&r&&(n.block<this.blockMin&&(this.blockMin=n.block),r.block>s&&(s=r.block),t[e].push([n,r]))}}}r>0&&(this.indices[e]={binIndex:t,loffset:n})}this.lastBlockPosition=s}get chromosomeNames(){return Object.keys(this.sequenceIndexMap)}chunksForRange(e,t,i){const n=this.indices[e];if(n){const e=this.reg2bins(t,i);if(0==e.length)return[];const r=[];for(let t of e)for(let e=t[0];e<=t[1];e++)if(n.binIndex[e]){const t=n.binIndex[e];for(let i of t){const t=i[0],n=i[1];r.push({minv:t,maxv:n,bin:e})}}return ec(r,n.loffset[e[0]])}return[]}reg2bins(e,t){(e-=1)<1&&(e=1),t>2**34&&(t=2**34),t-=1;let i=0,n=0,r=this.minShift+3*this.depth;const s=[];for(;i<=this.depth;r-=3,n+=1<<3*i,i+=1){const i=n+(e>>r),o=n+(t>>r);s.push([i,o])}return s}bin_limit(){return((1<<3*(this.depth+1))-1)/7}}class nc{constructor(){}async parse(e,t,i){const n=[];let r=Number.MAX_SAFE_INTEGER,s=0;const o=new Kh(new DataView(e)),a=o.getInt(),l={};if(!(21578050===a||t&&21578324===a))throw new Error(indexURL+" is not a "+(t?"tabix":"bai")+" file");{const e=o.getInt();if(t){o.getInt(),o.getInt(),o.getInt(),o.getInt(),o.getInt(),o.getInt(),o.getInt();for(let t=0;t<e;t++){let e=o.getString();i&&(e=i.getChromosomeName(e)),l[e]=t}}for(let t=0;t<e;t++){const e={},i=[],a=o.getInt();for(let t=0;t<a;t++){const t=o.getInt();if(37450===t)o.getInt(),o.getVPointer(),o.getVPointer(),o.getLong(),o.getLong();else{e[t]=[];const i=o.getInt();for(let n=0;n<i;n++){const i=o.getVPointer(),n=o.getVPointer();i&&n&&(i.block<r&&(r=i.block),n.block>s&&(s=n.block),e[t].push([i,n]))}}}const l=o.getInt();for(let e=0;e<l;e++){const e=o.getVPointer();i.push(e)}a>0&&(n[t]={binIndex:e,linearIndex:i})}this.firstBlockPosition=r,this.lastBlockPosition=s,this.indices=n,this.sequenceIndexMap=l,this.tabix=t}}get chromosomeNames(){return Object.keys(this.sequenceIndexMap)}chunksForRange(e,t,i){const n=this.indices[e];if(n){const e=function(e,t){const i=[];t>=1<<29&&(t=1<<29);return--t,i.push([0,0]),i.push([1+(e>>26),1+(t>>26)]),i.push([9+(e>>23),9+(t>>23)]),i.push([73+(e>>20),73+(t>>20)]),i.push([585+(e>>17),585+(t>>17)]),i.push([4681+(e>>14),4681+(t>>14)]),i}(t,i),r=[];for(let t of e)for(let e=t[0];e<=t[1];e++)if(n.binIndex[e]){const t=n.binIndex[e];for(let e of t){const t=e[0],i=e[1];r.push({minv:t,maxv:i})}}const s=n.linearIndex.length;let o;const a=Math.min(t>>14,s-1),l=Math.min(i>>14,s-1);for(let e=a;e<=l;e++){const t=n.linearIndex[e];if(t){o=t;break}}return ec(r,o)}return[]}}class rc{constructor(){}async parse(e,t){let i=0;this.chrIndex={},this.lastBlockPosition=[];const n=new Kh(new DataView(e));!function(e){e.getInt(),e.getInt();const t=e.getInt();if(e.getString(),e.getLong(),e.getLong(),e.getString(),e.getInt(),t>=3){let t=e.getInt();for(;t-- >0;)e.getString(),e.getString()}}(n);let r=n.getInt();for(;r-- >0;){let e=n.getString();t&&(e=t.getChromosomeName(e));const r=n.getInt(),s=n.getInt(),o=n.getInt();n.getInt(),n.getInt();let a=n.getLong();const l=[];for(let e=0;e<s;e++){const e=n.getLong();l.push({min:a,max:e}),a=e,e>i&&(i=e)}this.chrIndex[e]={chr:e,blocks:l,longestFeature:o,binWidth:r}}this.lastBlockPosition=i}get chromosomeNames(){return Object.keys(this.chrIndex)}chunksForRange(e,t,i){const n=this.chrIndex[e];if(n){const e=n.blocks,r=n.longestFeature,s=n.binWidth,o=Math.max(t-r,0),a=Math.floor(o/s);if(a>=e.length)return[];{const t=Math.min(Math.floor((i-1)/s),e.length-1),n=e[a].min,r=e[t].max;if(0===r-n)return[];return[{minv:{block:n,offset:0},maxv:{block:r,offset:0}}]}}}}async function sc(e,t,i){let n=await ta.loadArrayBuffer(e,Sa(t)),r=new DataView(n);if(31===r.getUint8(0)&&139===r.getUint8(1)){n=Ao(n).buffer,r=new DataView(n)}switch(r.getInt32(0,!0)){case 21578050:return async function(e,t){const i=new nc;return await i.parse(e,!1,t),i}(n,i);case 21578324:return async function(e,t){const i=new nc;return await i.parse(e,!0,t),i}(n,i);case 21582659:return async function(e,t){const i=new ic;return i.parse(e,t),i}(n,i);case 1480870228:return async function(e,t){const i=new rc;return i.parse(e,t),i}(n,i);case 38359875:throw Error("CSI version 2 is not supported.");default:throw Error(`Unrecognized index type: ${e}`)}}function oc(e){return"string"==typeof e||e instanceof String?new ac(e):new lc(e)}class ac{constructor(e){this.data=e,this.ptr=0}nextLine(){var e=this.ptr,t=this.data.indexOf("\n",e),i=this.data;if(t>0)return this.ptr=t+1,t>e&&"\r"===i.charAt(t-1)?i.substring(e,t-1):i.substring(e,t);var n=i.length;return this.ptr=n,e>=n?void 0:i.substring(e)}}class lc{constructor(e){this.data=e,this.length=this.data.length,this.ptr=0}nextLine(){var e,t;if(t="",!(this.ptr>=this.length)){for(var i=this.ptr;i<this.length;i++)if("\r"!==(e=String.fromCharCode(this.data[i]))){if("\n"===e)break;t+=e}return this.ptr=i+1,t}}}class hc{constructor(e){this.config=e,this.filePtr=0,this.bufferPtr=0,this.buffer}async nextLine(){let e;try{for(;;){const t=this.buffer?this.buffer.length:0;for(;this.bufferPtr<t;){const t=String.fromCharCode(this.buffer[this.bufferPtr++]);if("\r"!==t){if("\n"===t)return e;e=e?e+t:t}}if(this.eof)return e;await this.readNextBlock()}}catch(t){return console.warn(t),this.eof=!0,e}}async readNextBlock(){const e=Sa(this.config,{range:{start:this.filePtr,size:26}}),t=Eo(await ta.loadArrayBuffer(this.config.url,e));if(0===t)this.eof=!0,this.buffer=void 0;else{const e=Sa(this.config,{range:{start:this.filePtr,size:t}}),i=await ta.loadArrayBuffer(this.config.url,e);i.byteLength<t&&(this.eof=!0),this.buffer=Ao(i),0==this.buffer.byteLength&&(this.eof=!0),this.bufferPtr=0,this.filePtr+=i.byteLength}}}const cc=e=>{const t=ArrayBuffer.isView(e)?e:new Uint8Array(e);return 1+(t[17]<<8|t[16])};class dc{constructor(e){this.config=e,this.cacheBlocks=0!=e.cacheBlocks,this.cache=void 0}async getData(e,t){const i=e.block,n=t.block,r=0===t.offset,s=await this.getInflatedBlocks(i,n,r);if(1===s.length)return s[0];let o=0;for(const e of s)o+=e.byteLength;const a=new Uint8Array(o);let l=0;for(const e of s)a.set(e,l),l+=e.byteLength;return a}async getInflatedBlocks(e,t,i){if(this.cacheBlocks){const n=this.cache;if(n&&n.startBlock<=e&&(n.endBlock>=t||i&&n.nextEndBlock===t)){const i=e-n.startBlock,r=t-n.startBlock;return fc(n.buffer,i,r)}{let r;if(!n||n.startBlock>t||n.endBlock<e)r=await this.loadBLockData(e,t,{skipEnd:i});else{const s=[];if(e<n.startBlock){const t=await this.loadBLockData(e,n.startBlock,{skipEnd:!0});s.push(t)}let o;if(e<=n.startBlock&&t>=n.endBlock)o=n.buffer;else{const i=Math.max(0,e-n.startBlock);let r;if(t>=n.endBlock)r=n.buffer.byteLength;else{const e=uc(n.buffer);for(let i=0;i<e.length-1;i++)if(n.startBlock+e[i]===t){r=e[i+1];break}}o=n.buffer.slice(i,r)}if(s.push(o),t>n.endBlock){const e=await this.loadBLockData(n.endBlock,t,{skipStart:!0,skipEnd:i});s.push(e)}r=function(e){if(1===e.length)return e[0];let t=0;for(const i of e)t+=i.byteLength;const i=new Uint8Array(t);let n=0;for(const t of e)i.set(new Uint8Array(t),n),n+=t.byteLength;return i.buffer}(s)}let s=t;if(i){const e=uc(r);t=e[e.length-1]}return this.cache={startBlock:e,endBlock:t,nextEndBlock:s,buffer:r},fc(r)}}return fc(await this.loadBLockData(e,t,{skipEnd:i}))}async loadBLockData(e,t,i){const n=this.config,r=i&&i.skipStart;let s=0;if(!(i&&i.skipEnd)){const e=Sa(n,{range:{start:t,size:26}}),i=await ta.loadArrayBuffer(n.url,e);s=cc(i)}if(r){const t=Sa(n,{range:{start:e,size:26}}),i=await ta.loadArrayBuffer(n.url,t);e+=cc(i)}const o=Sa(n,{range:{start:e,size:t+s-e}});return ta.loadArrayBuffer(n.url,o)}}function uc(e){const t=e.byteLength;let i=0;const n=[0];for(;i<t;){const r=new Uint8Array(e,i);i+=1+(r[17]<<8|r[16]),i<t&&n.push(i)}return n}function fc(e,t,i){const n=[];let r=t=t||0;const s=e.byteLength-18;for(;r<s;)try{const t=new Uint8Array(e,r,18),s=t[11]<<8|t[10],o=t[17]<<8|t[16],a=12+s+r,l=e.byteLength-a,h=o-s-18;if(l<h||h<=0)break;const c=new Uint8Array(e,a,h),d=ko(c);if(n.push(d),i===r)break;r+=o+1}catch(e){console.error(e);break}return n}class pc{constructor(e,t){var i;this.config=e||{},this.genome=t,this.indexURL=e.indexURL,this.indexed=e.indexed||void 0!==this.indexURL,this.queryable=this.indexed,Yi(this.config.url)?this.filename=this.config.url.name:Ra(this.config.url)?(this.indexed=!1,this.dataURI=e.url):(i=Ji(this.config.url),this.filename=e.filename||i.file),this.parser=this.getParser(this.config),"vcf"!==this.config.format||this.config.indexURL||console.warn("Warning: index file not specified.  The entire vcf file will be loaded.")}async defaultVisibilityWindow(){if(this.config.indexURL){const e=await this.getIndex();if(e&&e.lastBlockPosition){let t=0;const i=1e4;for(let i of e.chromosomeNames){const e=this.genome.getChromosome(i);e&&(t+=e.bpLength)}return Math.round(t/e.lastBlockPosition*i)}}}async readFeatures(e,t,i){return await this.getIndex()?(this.indexed=!0,this.loadFeaturesWithIndex(e,t,i)):this.dataURI?(this.indexed=!1,this.loadFeaturesFromDataURI()):(this.indexed=!1,this.loadFeaturesNoIndex())}async readHeader(){if(this.dataURI)return await this.loadFeaturesFromDataURI(this.dataURI),this.header;if(this.config.indexURL){const e=await this.getIndex();if(!e)throw new Error("Unable to load index: "+this.config.indexURL);let t;if(e.tabix)this._blockLoader=new dc(this.config),t=new hc(this.config);else{const i=Object.values(e.chrIndex).flatMap((e=>e.blocks)).map((e=>e.max)).reduce(((e,t)=>Math.min(e,t)),Number.MAX_SAFE_INTEGER),n=Sa(this.config,{bgz:e.tabix,range:{start:0,size:i}});t=oc(await ta.loadString(this.config.url,n))}return this.header=await this.parser.parseHeader(t),this.header}{const e=Sa(this.config),t=await ta.loadString(this.config.url,e);let i=oc(t);return this.header=await this.parser.parseHeader(i),i=oc(t),this.features=await this.parser.parseFeatures(i),this.header}}getParser(e){switch(e.format){case"vcf":return new Ph(e);case"seg":return new Lh("seg");case"mut":return new Lh("mut");case"maf":return new Lh("maf");case"gwas":return new Uh(e);case"aed":return new $h(e);default:return new kh(e)}}async loadFeaturesNoIndex(){if(this.features){const e=this.features;return delete this.features,e}{const e=Sa(this.config),t=await ta.loadString(this.config.url,e);if(!this.header){const e=oc(t);this.header=await this.parser.parseHeader(e)}const i=oc(t);return await this.parser.parseFeatures(i)}}async loadFeaturesWithIndex(e,t,i){this.dataURI||this.header||await this.readHeader();const n=this.config,r=this.parser,s=this.index.tabix,o=s?this.index.sequenceIndexMap[e]:e;if(void 0===o)return[];const a=this.genome,l=this.index.chunksForRange(o,t,i);if(l&&0!==l.length){const o=[];for(let h of l){let l;if(s)l=await this._blockLoader.getData(h.minv,h.maxv);else{const e=Sa(n,{range:{start:h.minv.block,size:h.maxv.block-h.minv.block+1}});l=await ta.loadString(n.url,e)}const c=oc(h.minv.offset?l.slice(h.minv.offset):l);let d=await r.parseFeatures(c);d=d.filter((e=>void 0===e._f));let u=!1;for(let n=0;n<d.length;n++){const r=d[n];if((a?a.getChromosomeName(r.chr):r.chr)!==e){if(0===o.length)continue;break}if(r.start>i){o.push(r);break}r.end>=t&&r.start<=i&&(u||(u=!0,n>0&&o.push(d[n-1])),o.push(r))}}return o.sort((function(e,t){return e.start-t.start})),o}return[]}async getIndex(){return this.index?this.index:this.config.indexURL?(this.index=await this.loadIndex(),this.index):void 0}async loadIndex(){return sc(this.config.indexURL,this.config,this.genome)}async loadFeaturesFromDataURI(){if(this.features){const e=this.features;return delete this.features,e}{const e=Lo(this.dataURI);let t=oc(e);return this.header=await this.parser.parseHeader(t),this.header instanceof String&&this.header.startsWith("##gff-version 3")&&(this.format="gff3"),t=oc(e),this.features=await this.parser.parseFeatures(t),this.features}}}const gc=$i;class mc{constructor(e){this.config=e}async readFeatures(e,t,i){let n;n="function"==typeof this.config.url?this.config.url({chr:e,start:t,end:i}):this.config.url.replace("$CHR",e).replace("$START",t).replace("$END",i);let r,s=Object.assign({},this.config);void 0!==this.config.body&&("function"==typeof this.config.body?s.body=this.config.body({chr:e,start:t,end:i}):s.body=this.config.body.replace("$CHR",e).replace("$START",t).replace("$END",i));const o=await ta.load(n,s);if(o&&(r="function"==typeof this.config.parser?this.config.parser(o):gc(o)?JSON.parse(o):o),this.config.mappings){let e=Object.keys(this.config.mappings);for(let t of r)for(let i of e)t[i]=t[this.config.mappings[i]]}return r}}const bc=function(e,t){this.config=e,this.genome=t,this.expandQueryInterval=!1};bc.prototype.readFeatures=function(e,t,i){const n=Math.max(0,Math.floor(t));let r=Math.ceil(i);if(this.genome){const t=this.genome.getChromosome(e);t&&r>t.bpLength&&(r=t.bpLength)}const s=this.config.url+"?db="+this.config.db+"&table="+this.config.tableName+"&chr="+e+"&start="+n+"&end="+r;return ta.loadJson(s,this.config).then((function(e){return e?(e.forEach((function(e){e.hasOwnProperty("exonStarts")&&e.hasOwnProperty("exonEnds")&&e.hasOwnProperty("exonCount")&&e.hasOwnProperty("cdsStart")&&e.hasOwnProperty("cdsEnd")&&function(e){var t,i,n,r,s,o;t=e.exonCount,i=e.exonStarts.split(","),n=e.exonEnds.split(","),r=[];for(var a=0;a<t;a++){var l={start:s=parseInt(i[a]),end:o=parseInt(n[a])};(e.cdsStart>o||e.cdsEnd<e.cdsStart)&&(l.utr=!0),e.cdsStart>=s&&e.cdsStart<=o&&(l.cdStart=e.cdsStart),e.cdsEnd>=s&&e.cdsEnd<=o&&(l.cdEnd=e.cdsEnd),r.push(l)}e.exons=r}(e)})),e):null}))};const wc=["Name","gene_name","gene","gene_id","alias","locus","name"];class vc{constructor(e){this.format=e.format,this.nameField=e.nameField,this.filterTypes=void 0===e.filterTypes?new Set(["chromosome"]):new Set(e.filterTypes)}combineFeatures(e,t){let i;const n=this.filterTypes;if(e=e.filter((e=>void 0===n||!n.has(e.type))),"gff3"===this.format){const t=this.combineFeaturesById(e);i=this.combineFeaturesByType(t)}else i=this.combineFeaturesByType(e);return i.sort((function(e,t){return e.start-t.start})),this.numberExons(i,t),this.nameFeatures(i),i}combineFeaturesById(e){const t=new Map,i=[];for(let n of e)if(Gl(n.type)||Wl(n.type)||!n.id)i.push(n);else{let e=t.get(n.chr);e||(e=new Map,t.set(n.chr,e));let i=e.get(n.id);i?i.push(n):e.set(n.id,[n])}for(let e of t.values())for(let t of e.values())if(t.length>1){const e=t[0];e.exons=[];for(let i of t)e.start=Math.min(e.start,i.start),e.end=Math.max(e.end,i.end),e.exons.push({start:i.start,end:i.end});i.push(e)}else i.push(t[0]);return i}combineFeaturesByType(e){const t=e.filter((e=>"gene"===e.type||e.type.endsWith("_gene"))),i=Object.create(null);for(let e of t)i[e.id]=e;const n=Object.create(null),r=[],s=new Set,o=this.filterTypes;e=e.filter((e=>void 0===o||!o.has(e.type)));for(let t of e)if("biological_region"===t.type&&console.log(),Wl(t.type)){const e=t.id;if(void 0!==e){const o=new Xl(t);n[e]=o,r.push(o),s.add(t);const a=i[t.parent];a&&(o.geneObject=a,s.add(a))}}for(let t of e)if(Gl(t.type)){const e=h(t);if(e)for(let i of e){let o=n[i];if(!o&&"gtf"===this.format){const e=Object.assign({},t);e.type="transcript",o=new Xl(e),n[i]=o,r.push(o)}if(void 0!==o){if(a=t.type,Ul.has(a))if(e.length>1){const e=new Ql(t);o.addExon(e)}else o.addExon(t);else o.addPart(t);s.add(t)}}}var a;r.forEach((function(e){"function"==typeof e.finish&&e.finish()}));const l=e.filter((e=>!s.has(e)));for(let e of l)r.push(e);return r;function h(e){return e.parent&&""!==e.parent.trim()?e.parent.trim().split(","):null}}numberExons(e,t){for(let i of e)if(i.exons&&(!t||i.end<=t.end&&i.start>t.start))for(let e=0;e<i.exons.length;e++){i.exons[e].number="-"===i.strand?i.exons.length-e:e+1}}nameFeatures(e){for(let t of e)if(t.attributeString){const e="gff3"===this.format?"=":" ",i=eh(t.attributeString,e),n=new Map(i);if(this.nameField)t.name=n.get(this.nameField);else for(let e of wc)if(n.has(e)){t.name=n.get(e);break}}}}const yc=function(e){this.config=e,this.url=e.url,this.tissueId=e.tissueSiteDetailId,this.indexed=!0,this.datasetId=e.datasetId||"gtex_v8"};yc.prototype.readFeatures=async function(e,t,i){let n=e.startsWith("chr")?e:"chr"+e,r=Math.floor(t),s=Math.ceil(i),o=this.datasetId,a=this.url+"?chromosome="+n+"&start="+r+"&end="+s+"&tissueSiteDetailId="+this.tissueId+"&datasetId="+o;const l=await ta.loadJson(a,{withCredentials:this.config.withCredentials});return l&&l.singleTissueEqtl?(l.singleTissueEqtl.forEach((function(e){e.chr=e.chromosome,e.position=e.pos,e.start=e.pos-1,e.end=e.start+1,e.snp=e.snpId,e.geneName=e.geneSymbol,e.geneId=e.gencodeId})),l.singleTissueEqtl):void 0};const _c=function(e){this.config=e,this.url=e.url,this.cellConditionId=e.cellConditionId,this.valueThreshold=e.valueThreshold?e.valueThreshold:.05};_c.prototype.readFeatures=function(e,t,i){var n=this,r=this.url+"?chromosome="+e+"&start="+t+"&end="+i+"&cell_condition_id="+this.cellConditionId;return new Promise((function(e,t){ta.loadJson(r,{withCredentials:n.config.withCredentials}).then((function(t){t?(t.eqtls.forEach((function(e){e.chr=e.chromosome,e.start=e.position,e.end=e.position+1})),e(t.eqtls)):e(null)})).catch((function(e){t(e)}))}))};const xc=ta.apiKey;function kc(e){var t=e.url+"/"+e.entity+"/"+e.entityId;return e.headers={"Cache-Control":"no-cache"},ta.loadJson(t,e)}function Cc(e){return new Promise((function(t,i){var n=e.results?e.results:[],r=e.url,s=e.body,o=e.decode,a="?",l=e.fields;return xc&&(r=r+a+"key="+xc,a="&"),l&&(r=r+a+"fields="+l),function e(a){a?s.pageToken=a:void 0!==s.pageToken&&delete s.pageToken;var l=JSON.stringify(s);ta.loadJson(r,{sendData:l,contentType:"application/json",headers:{"Cache-Control":"no-cache"}}).then((function(i){var r,s;i?((s=o?o(i):i)&&s.forEach((function(e){n.push(e)})),(r=i.nextPageToken)?e(r):t(n)):t(n)})).catch((function(e){i(e)}))}()}))}const Sc=function(e,t){this.config=e,this.genome=t,this.url=e.url,this.variantSetId=e.variantSetId,this.callSetIds=e.callSetIds,this.includeCalls=void 0===e.includeCalls||e.includeCalls};Sc.prototype.readHeader=function(){var e=this;return e.header?Promise.resolve(e.header):(e.header={},!1===e.includeCalls?Promise.resolve(e.header):Cc({url:e.url+"/callsets/search",fields:"nextPageToken,callSets(id,name)",body:{variantSetIds:Array.isArray(e.variantSetId)?e.variantSetId:[e.variantSetId],pageSize:"10000"},decode:function(t){if(e.callSetIds){var i=[],n=new Set;return e.callSetIds.forEach((function(e){n.add(e)})),t.callSets.forEach((function(e){n.has(e.id)&&i.push(e)})),i}return t.callSets}}).then((function(t){return e.header.callSets=t,e.header})))},Sc.prototype.readFeatures=function(e,t,i){const n=this,r=this.genome;return n.readHeader().then((function(e){return new Promise((function(e,t){n.chrAliasTable?e(n.chrAliasTable):n.readMetadata().then((function(t){n.metadata=t.metadata,n.chrAliasTable={},t.referenceBounds&&r&&t.referenceBounds.forEach((function(e){var t=e.referenceName,i=r.getChromosomeName(t);n.chrAliasTable[i]=t})),e(n.chrAliasTable)}))}))})).then((function(r){var s=r.hasOwnProperty(e)?r[e]:e;return Cc({url:n.url+"/variants/search",fields:n.includeCalls?void 0:"nextPageToken,variants(id,variantSetId,names,referenceName,start,end,referenceBases,alternateBases,quality,filter,info)",body:{variantSetIds:Array.isArray(n.variantSetId)?n.variantSetId:[n.variantSetId],callSetIds:n.callSetIds?n.callSetIds:void 0,referenceName:s,start:t.toString(),end:i.toString(),pageSize:"10000"},decode:function(e){var t,i=[];return e.variants.forEach((function(e){t=function(e){var t,i=new Fh;return i.chr=e.referenceName,i.start=parseInt(e.start),i.end=parseInt(e.end),i.pos=i.start+1,i.names=Dh(e.names,"; "),i.referenceBases=e.referenceBases,i.alternateBases=Dh(e.alternateBases),i.quality=e.quality,i.filter=Dh(e.filter),i.info={},e.info&&Object.keys(e.info).forEach((function(t){var n,r=e.info[t];n=Array.isArray(r)?r.join(","):r,i.info[t]=n})),i.calls={},e.calls&&e.calls.forEach((function(e){t=e.callSetId,i.calls[t]=e})),init(i),i}(e),t.isRefBlock()||i.push(t)})),i}})}))},Sc.prototype.readMetadata=function(){return kc({url:this.url,entity:"variantsets",entityId:this.variantSetId})};class Ac{constructor(e){this.config=e}async readFeatures(e,t,i){const n=(await ta.loadJson(this.config.url+"/variants/?count=50000")).records,r=[];for(let e of n)if(e.coordinates){e.id;const t=e.coordinates;t.chromosome&&r.push(new Ec(t.chromosome,t.start-1,t.stop,e)),t.chromosome2&&r.push(new Ec(t.chromosome2,t.start2-1,t.stop2,e))}return r}}class Ec{constructor(e,t,i,n){if(this.chr=e,this.start=t,this.end=i,this.id=n.id,this.entrezName=n.entrez_name,this.name=n.name,this.actionabilityScore=n.civic_actionability_score,n.coordinates.reference_bases&&(this.refBases=n.coordinates.reference_bases),n.coordinates.variant_bases&&(this.altBases=n.coordinates.variant_bases),n.variant_types&&(this.variant_types=n.variant_types),this.locationString=this.chr+":"+Wi(this.start+1)+"-"+Wi(this.end),void 0!==this.actionabilityScore){let e;if(this.actionabilityScore<=10)e=.2;else{const t=Math.min(30,this.actionabilityScore);e=.2+.8*Math.log10((t-10)/2)}this.alpha=e}}popupData(){const e=i("CIViC","https://civicdb.org/links/variants/"+this.id);this.refBases!==this.altBases&&this.refBases&&1===this.refBases.length&&this.altBases&&this.altBases.length;const t=[e];if(t.push({name:"Entrez",value:i(this.entrezName,"https://ghr.nlm.nih.gov/gene/"+this.entrezName)}),t.push({name:"Name",value:this.name}),this.variant_types&&this.variant_types.length>0){const e=1===this.variant_types.length?"Type":"Types";let i;for(let e of this.variant_types)i?i+=", "+e.display_name:i=e.display_name;t.push({name:e,value:i})}return t.push({name:"Actionability",value:this.actionabilityScore}),t.push({name:"Location",value:this.locationString}),t;function i(e,t){return"<a target='_blank' href='"+t+"'>"+e+"</a>"}}}class Tc{constructor(e,t){if(this.config=e,this.genome=t,this.format=e.format?e.format.toUpperCase():"BAM","BAM"!==this.format&&"VCF"!==this.format)throw Error(`htsget format ${e.format} is not supported`)}async readHeaderData(){const e=`${Mc(this.config)}?class=header&format=${this.format}`,t=await ta.loadJson(e,Sa(this.config));return await this.loadUrls(t.htsget.urls)}async readData(e,t,i){const n=`${Mc(this.config)}?format=${this.format}&referenceName=${e}&start=${Math.floor(t)}&end=${Math.ceil(i)}`,r=await ta.loadJson(n,Sa(this.config));return this.loadUrls(r.htsget.urls)}async loadUrls(e){const t=[];for(let i of e)if(i.url.startsWith("data:"))t.push(Promise.resolve(Rc(i.url)));else{const e=Sa(this.config||{});i.headers&&(e.headers=Object.assign(e.headers||{},i.headers)),t.push(ta.loadArrayBuffer(i.url,e))}return function(e){let t=0;for(let i of e)t+=i.byteLength;let i=0;const n=new Uint8Array(t);for(let t of e){const e=new Uint8Array(t);n.set(e,i),i+=e.length}return n}(await Promise.all(t))}static async inferFormat(e){try{const t=Mc(e),i=`${t}${t.includes("?")?"&":"?"}class=header`,n=await ta.loadJson(i,Sa(e));if(n.htsget){const t=n.htsget.format;if("BAM"!==t&&"VCF"!==t)throw Error(`htsget format ${t} is not supported`);e.format=t.toLowerCase(),e.sourceType="htsget",e.name||(e.name=await Ta(e.url))}}catch(e){}}}function Mc(e){if(e.url&&e.endpoint&&e.id)return e.url+e.endpoint+e.id;if(e.endpoint&&e.id)return e.endpoint+e.id;if(e.url)return e.url.startsWith("htsget://")?e.url.replace("htsget://","https://"):e.url;throw Error("Must specify either 'url', or 'endpoint' and 'id")}function Rc(e){const t=e.split(","),i=t[0].split(":")[1];let n=t[1];n=i.indexOf("base64")>=0?atob(n):decodeURI(n);const r=new Uint8Array(n.length);for(var s=0;s<n.length;s++)r[s]=n.charCodeAt(s);return r}class Lc extends Tc{constructor(e,t){super(e,t),this.parser=new Ph}async readHeader(){if(!this.header){const e=oc(await this.readHeaderData());this.header=await this.parser.parseHeader(e,this.genome),this.chrAliasTable=this.header.chrAliasTable}return this.header}async readFeatures(e,t,i){if(this.config.format&&"VCF"!==this.config.format.toUpperCase())throw Error(`htsget format ${this.config.format} is not supported`);this.chrAliasTable||await this.readHeader();let n=this.chrAliasTable.has(e)?this.chrAliasTable.get(e):e;const r=oc(await this.readData(n,t,i));return this.parser.parseFeatures(r)}}function Ic(e,t){t=t||Number.MAX_SAFE_INTEGER;const i=[];e.sort((function(e,t){return e.start-t.start})),i.push(-1e3);for(let n of e){let e=0;const r=Math.min(i.length,t);for(e=0;e<r;e++)if(n.start>=i[e]){n.row=e,i[e]=n.end;break}n.row=e,i[e]=n.end}}function Nc(e,t,i){const n=i||1e4,r=e=>{const i=Object.assign({},e);return i.chr="all",i.start=t.getGenomeCoordinate(e.chr,e.start),i.end=t.getGenomeCoordinate(e.chr,e.end),i._f=e,i.exons&&delete i.exons,i},s=new Set(t.wgChromosomeNames),o=[];let a=0;for(let i of t.wgChromosomeNames){if(Array.isArray(e)){const i={};for(let n of e){const e=t.getChromosomeName(n.chr);i.hasOwnProperty(e)||(i[e]=[]),i[e].push(n)}e=i}const l=e[i];if(l)for(let e of l){let i=t.getChromosomeName(e.chr);if(s.has(i))if(o.length<n)o.push(r(e));else{const t=n/(a+1);if(Math.random()<t){o[Math.floor(Math.random()*(n-1))]=r(e)}}a++}}return o.sort((function(e,t){return e.start-t.start})),o}function Fc(e,t){if(t=t||1e3,null==e||0===e.length)return;const i={},n=[];for(let t of e){const e=t.chr;let r=i[e];r||(r=[],i[e]=r,n.push(e)),r.push(t)}for(let e of n)Ic(i[e],t)}class Bc{constructor(e,t){this.config=e||{},this.genome=t,this.sourceType=void 0===e.sourceType?"file":e.sourceType,this.maxWGCount=e.maxWGCount||1e4;const i=new Set(["bigwig","bw","bigbed","bb","biginteract","biggenepred","bignarrowpeak","tdf"]);this.queryable=e.indexURL||!0===e.queryable,e.reader?(this.reader=e.reader,this.queryable=!1!==e.queryable):"ga4gh"===e.sourceType?(this.reader=new Sc(e,t),this.queryable=!0):"immvar"===e.sourceType?(this.reader=new _c(e),this.queryable=!0):"eqtl"===e.type&&"gtex-ws"===e.sourceType?(this.reader=new yc(e),this.queryable=!0):"htsget"===e.sourceType?(this.reader=new Lc(e,t),this.queryable=!0):"ucscservice"===e.sourceType?(this.reader=new bc(e.source),this.queryable=!0):"custom"===e.sourceType?(this.reader=new mc(e.source),this.queryable=!1!==e.source.queryable):"civic-ws"===e.sourceType?(this.reader=new Ac(e),this.queryable=!1):(this.reader=new pc(e,t),void 0!==e.queryable?this.queryable=e.queryable:(i.has(e.format)||this.reader.indexed)&&(this.queryable=!0)),this.searchable=!0===e.searchable||e.searchableFields||!1!==e.searchable&&!this.queryable}async defaultVisibilityWindow(){if(this.reader&&"function"==typeof this.reader.defaultVisibilityWindow)return this.reader.defaultVisibilityWindow()}async trackType(){const e=await this.getHeader();return e?e.type:void 0}async getHeader(){if(!this.header)if(this.reader&&"function"==typeof this.reader.readHeader){const e=await this.reader.readHeader();e?(this.header=e,e.format&&(this.config.format=e.format)):this.header={}}else this.header={};return this.header}async getFeatures({chr:e,start:t,end:i,bpPerPixel:n,visibilityWindow:r}){const s=this.genome,o=s?s.getChromosomeName(e):e,a="all"===o.toLowerCase();return(a&&!this.wgFeatures&&this.supportsWholeGenome()||this.config.disableCache||!this.featureCache||!this.featureCache.containsRange(new el(o,t,i)))&&await this.loadFeatures(o,t,i,r),a?(this.wgFeatures||(this.supportsWholeGenome()?this.wgFeatures=Nc(this.featureCache.getAllFeatures(),this.genome,this.maxWGCount):this.wgFeatures=[]),this.wgFeatures):this.featureCache.queryFeatures(o,t,i)}supportsWholeGenome(){return!this.queryable}getAllFeatures(){return this.queryable||!this.featureCache?[]:this.featureCache.getAllFeatures()}async loadFeatures(e,t,i,n){const r=this.reader;let s=t,o=i;if((!n||n<=0)&&!1!==this.config.expandQuery){const t=this.genome?this.genome.getChromosome(e):void 0;s=0,o=Math.max(t?t.bpLength:Number.MAX_SAFE_INTEGER,i)}else if(n>i-t&&!1!==this.config.expandQuery){const e=Math.min(4.1*(i-t),n);s=Math.max(0,(t+i)/2-e),o=t+e}let a=await r.readFeatures(e,s,o);void 0===this.queryable&&(this.queryable=r.indexed);const l=this.queryable?new el(e,s,o):void 0;if(a){if(!1===this.config.assembleGFF||"gtf"!==this.config.format&&"gff3"!==this.config.format&&"gff"!==this.config.format||(a=new vc(this.config).combineFeatures(a,l)),"wig"!==this.config.format&&"junctions"!==this.config.type){Fc(a,this.config.maxRows||Number.MAX_SAFE_INTEGER)}this.featureCache=new ca(a,this.genome,l),this.searchable&&this.genome.addFeaturesToDB(a,this.config)}else this.featureCache=new ca([],l)}}class Oc{constructor(e,t,i){this.path=e.url,this.bufferSize=i||512e3,this.range={start:-1,size:-1},this.config=e}async dataViewForRange(e,t,i=0){try{if(!(this.data&&this.range.start<=e.start&&this.range.start+this.range.size>=e.start+e.size)){let t;t=e.size?Math.max(this.bufferSize,e.size):this.bufferSize,this.contentLength&&(t=Math.min(t,this.contentLength-e.start));const i={start:e.start,size:t},n=await ta.loadArrayBuffer(this.path,Sa(this.config,{range:i}));this.data=n,this.range=i}const i=this.data.byteLength,n=e.start-this.range.start;return t?new Uint8Array(this.data,n,i-n):new DataView(this.data,n,i-n)}catch(n){if(0===i&&n.message&&n.message.startsWith("416")){try{return this.contentLength=await ta.getContentLength(this.path,Sa(this.config)),this.dataViewForRange(e,t,++i)}catch(e){console.error(e)}throw n}}}}let Dc=512e3;class Pc{constructor(e,t){this.path=e.url,this.format=e.format||"bigwig",this.genome=t,this.rpTreeCache={},this.config=e,this.loader=Ra(this.path)?new Qc(this.path):ta}async readWGFeatures(e,t){await this.loadHeader();const i=this.chromTree.idToChrom.length-1,n=this.chromTree.idToChrom[0],r=this.chromTree.idToChrom[i];return this.readFeatures(n,0,r,Number.MAX_VALUE,e,t)}async readFeatures(e,t,i,n,r,s){await this.loadHeader();const o=this.chromTree.chromToID[e],a=this.chromTree.chromToID[i];if(void 0===o||void 0===a)return[];let l,h;if("bigwig"===this.type){const e=await this.getZoomHeaders();let t=r?function(e,t){let i;for(let n=0;n<t.length;n++){const r=t[n];if(r.reductionLevel<e){i=r;break}}return i}(r,e):void 0;t?(l=t.indexOffset,h=Zc):(l=this.header.fullIndexOffset,h=Wc)}else l=this.header.fullIndexOffset,h=Gc.call(this);const c=await this.loadRPTree(l),d=await c.findLeafItemsOverlapping(o,t,a,n);if(d&&0!==d.length){let e=Number.MAX_VALUE,i=0;for(let t of d)e=Math.min(e,t.dataOffset),i=Math.max(i,t.dataOffset+t.dataSize);const r=i-e,l=await this.loader.loadArrayBuffer(this.config.url,Sa(this.config,{range:{start:e,size:r}})),c=[];for(let i of d){const r=new Uint8Array(l,i.dataOffset-e,i.dataSize);let d;d=this.header.uncompressBuffSize>0?xo(r):r,h.call(this,new DataView(d.buffer),o,t,a,n,c,this.chromTree.idToChrom,s)}return c.sort((function(e,t){return e.start-t.start})),c}return[]}async getZoomHeaders(){return this.zoomLevelHeaders||await this.loadHeader(),this.zoomLevelHeaders}async loadHeader(){if(this.header)return this.header;{let e,t=await this.loader.loadArrayBuffer(this.path,Sa(this.config,{range:{start:0,size:64}}));this.littleEndian=!0;let i=new Kh(new DataView(t)),n=i.getUInt();if(2291137574===n)this.type="bigwig";else if(2273964779===n)this.type="bigbed";else{this.littleEndian=!1,i.littleEndian=!1,i.position=0;let e=i.getUInt();654085990===e?this.type="bigwig":3958540679===e&&(this.type="bigbed")}e={bwVersion:i.getUShort(),nZoomLevels:i.getUShort(),chromTreeOffset:i.getLong(),fullDataOffset:i.getLong(),fullIndexOffset:i.getLong(),fieldCount:i.getUShort(),definedFieldCount:i.getUShort(),autoSqlOffset:i.getLong(),totalSummaryOffset:i.getLong(),uncompressBuffSize:i.getInt(),extensionOffset:i.getLong()};const r=64;let s={start:r,size:e.fullDataOffset-r+5};t=await this.loader.loadArrayBuffer(this.path,Sa(this.config,{range:s}));const o=e.nZoomLevels;i=new Kh(new DataView(t)),this.zoomLevelHeaders=[],this.firstZoomDataOffset=Number.MAX_SAFE_INTEGER;for(let e=1;e<=o;e++){const t=o-e,n=new zc(t,i);this.firstZoomDataOffset=Math.min(n.dataOffset,this.firstZoomDataOffset),this.zoomLevelHeaders[t]=n}if(e.autoSqlOffset>0){i.position=e.autoSqlOffset-r;const t=i.getString();t&&(this.autoSql=function(e){let t;const i=[];let n=!1;const r=e.trim().split(/\s*[\r\n]+\s*/g);for(let e of r)if(e.startsWith("table"))t=e.split(/\s+/)[1].trim();else if(e.startsWith("("))n=!0;else if(e.startsWith(")"));else if(n&&e.length>0){const t=e.indexOf(";"),n=e.substr(0,t).split(/\s+/),r=e.substr(t+1).replace(/"/g,"").trim();i.push({type:n[0],name:n[1],description:r})}return{table:t,fields:i}}(t))}if(e.totalSummaryOffset>0&&(i.position=e.totalSummaryOffset-r,this.totalSummary=new jc(i)),!(e.chromTreeOffset>0))throw"BigWig chromosome tree offset <= 0";return i.position=e.chromTreeOffset-r,this.chromTree=new Vc(i,r,this.genome),i.position=e.fullDataOffset-r,e.dataCount=i.getInt(),this.setDefaultVisibilityWindow(e),this.header=e,this.header}}async loadRPTree(e){let t=this.rpTreeCache[e];return t||(t=new Hc(e,this.config,this.littleEndian,this.loader),await t.load(),this.rpTreeCache[e]=t,t)}async getType(){return await this.loadHeader(),this.type}async getTrackType(){return await this.loadHeader(),"bigwig"===this.type?"wig":this.autoSql&&"chromatinInteract"===this.autoSql.table?"interact":"annotation"}setDefaultVisibilityWindow(e){if("bigwig"===this.type)this.visibilityWindow=-1;else{let t=this.genome?this.genome.getGenomeLength():3088286401;this.visibilityWindow=e.dataCount<1e3?-1:t/e.dataCount*1e3}}}class zc{constructor(e,t){this.index=e,this.reductionLevel=t.getInt(),this.reserved=t.getInt(),this.dataOffset=t.getLong(),this.indexOffset=t.getLong()}}class Hc{constructor(e,t,i,n){this.config=t,this.loader=n,this.fileOffset=e,this.path=t.url,this.littleEndian=i}async load(){const e=this.fileOffset+48,t=Ra(this.path)?this.loader:new Oc(this.config,Dc);return this.rootNode=await this.readNode(e,t),this}async readNode(e,t){let i=await t.dataViewForRange({start:e,size:4},!1),n=new Kh(i,this.littleEndian);const r=1===n.getByte();n.getByte();const s=n.getUShort();let o={start:e+=4,size:s*(r?32:24)};i=await t.dataViewForRange(o,!1);const a=new Array(s);if(n=new Kh(i),r){for(let e=0;e<s;e++){let t={isLeaf:!0,startChrom:n.getInt(),startBase:n.getInt(),endChrom:n.getInt(),endBase:n.getInt(),dataOffset:n.getLong(),dataSize:n.getLong()};a[e]=t}return new Uc(a)}for(let e=0;e<s;e++){let t={isLeaf:!1,startChrom:n.getInt(),startBase:n.getInt(),endChrom:n.getInt(),endBase:n.getInt(),childOffset:n.getLong()};a[e]=t}return new Uc(a)}async findLeafItemsOverlapping(e,t,i,n){let r=this;return new Promise((function(s,o){let a=[],l=new Set,h=Ra(r.path)?r.loader:new Oc(r.config,Dc);l.add(0),function c(d,u){if(qc(d,e,t,i,n)){d.items.forEach((function(s){qc(s,e,t,i,n)&&(s.isLeaf?a.push(s):s.childNode?c(s.childNode):(l.add(s.childOffset),r.readNode(s.childOffset,h).then((function(e){s.childNode=e,c(e,s.childOffset)})).catch(o)))}))}void 0!==u&&l.delete(u);0===l.size&&s(a)}(r.rootNode,0)}))}}class Uc{constructor(e){this.items=e;let t,i,n=Number.MAX_SAFE_INTEGER,r=0,s=Number.MAX_SAFE_INTEGER,o=0;for(t=0;t<e.length;t++)i=e[t],n=Math.min(n,i.startChrom),r=Math.max(r,i.endChrom),s=Math.min(s,i.startBase),o=Math.max(o,i.endBase);this.startChrom=n,this.endChrom=r,this.startBase=s,this.endBase=o}}class Vc{constructor(e,t,i){let n=e.getInt(),r=e.getInt(),s=e.getInt(),o=e.getInt(),a=e.getLong(),l=e.getLong(),h={},c=[];this.header={magic:n,blockSize:r,keySize:s,valSize:o,itemCount:a,reserved:l},this.chromToID=h,this.idToChrom=c,function e(n,r){r>=0&&(n.position=r);let o=n.getByte();n.getByte();let a,l,d,u,f,p,g=n.getUShort();if(1===o)for(a=0;a<g;a++)l=n.getFixedLengthTrimmedString(s),d=n.getInt(),n.getInt(),i&&(l=i.getChromosomeName(l)),h[l]=d,c[d]=l;else for(a=0;a<g;a++)l=n.getFixedLengthTrimmedString(s),u=n.getLong(),f=u-t,p=n.position,e(n,f),n.position=p}(e,-1)}}function qc(e,t,i,n,r){return e?(n>e.startChrom||n===e.startChrom&&r>=e.startBase)&&(t<e.endChrom||t===e.endChrom&&i<=e.endBase):(console.log("null item for "+t+" "+i+" "+r),!1)}class jc{constructor(e){e?(this.basesCovered=e.getLong(),this.minVal=e.getDouble(),this.maxVal=e.getDouble(),this.sumData=e.getDouble(),this.sumSquares=e.getDouble(),$c.call(this)):(this.basesCovered=0,this.minVal=0,this.maxVal=0,this.sumData=0,this.sumSquares=0,this.mean=0,this.stddev=0)}}function $c(){let e=this.basesCovered;if(e>0){this.mean=this.sumData/e,this.stddev=Math.sqrt(this.sumSquares/(e-1));let t=this.minVal<0?this.mean-2*this.stddev:0,i=this.maxVal>0?this.mean+2*this.stddev:0;this.defaultRange={min:t,max:i}}}function Wc(e,t,i,n,r,s,o){const a=new Kh(e),l=a.getInt(),h=a.getInt();let c=h,d=a.getInt();const u=a.getInt(),f=a.getInt(),p=a.getByte();a.getByte();let g=a.getUShort();if(l>=t&&l<=n){let e=0;for(;g-- >0;){let g;switch(p){case 1:c=a.getInt(),d=a.getInt(),g=a.getFloat();break;case 2:c=a.getInt(),g=a.getFloat(),d=c+f;break;case 3:g=a.getFloat(),c=h+e*u,d=c+f,e++}if(!(l<t||l===t&&d<i)){if(l>n||l===n&&c>=r)break;if(Number.isFinite(g)){const e=o[l];s.push({chr:e,start:c,end:d,value:g})}}}}}function Gc(){const e=function(e,t,i,n){if("biginteract"===n||i&&"chromatinInteract"===i.table||"interact"===i.table)return function(e,t){return e.chr1=t[5],e.start1=Number.parseInt(t[6]),e.end1=Number.parseInt(t[7]),e.chr2=t[10],e.start2=Number.parseInt(t[11]),e.end2=Number.parseInt(t[12]),e.name=t[0],e.score=Number(t[1]),e.value=Number(t[2]),e.color="."===t[4]?void 0:"0"===t[4]?"rgb(0,0,0)":t[4],e};{const n=e-3;return function(r,s){if(n>0&&(r.name=s[0]),n>1&&(r.score=Number(s[1])),n>2&&(r.strand=s[2]),n>3&&(r.cdStart=parseInt(s[3])),n>4&&(r.cdEnd=parseInt(s[4])),n>5&&"."!==s[5]&&"0"!==s[5]&&"-1"!==s[5]){const e=Do.createColorString(s[5]);r.color=e.startsWith("rgb")?e:void 0}if(n>8){const e=parseInt(s[6]),t=s[7].split(","),i=s[8].split(","),n=[];for(let s=0;s<e;s++){const e=r.start+parseInt(i[s]),o=e+parseInt(t[s]);n.push({start:e,end:o})}!function(e,t,i){for(let n of e){const e=n.end,r=n.start;e<t||r>i?n.utr=!0:(t>=r&&t<=e&&(n.cdStart=t),i>=r&&i<=e&&(n.cdEnd=i))}}(n,r.cdStart,r.cdEnd),r.exons=n}if(i)for(let n=e;n<t;n++)if(n<i.fields.length){const e=i.fields[n].name,t=s[n-3];r[e]=t}}}}(this.header.definedFieldCount,this.header.fieldCount,this.autoSql,this.format);return function(t,i,n,r,s,o,a){const l=new Kh(t);for(;l.remLength()>=13;){const t=l.getInt(),h=a[t],c=l.getInt(),d=l.getInt(),u=l.getString();if(!(t<i||t===i&&d<n)){if(t>r||t===r&&c>=s)break;if(d>0){const t={chr:h,start:c,end:d};o.push(t);const i=u.split("\t");e(t,i)}}}}}function Zc(e,t,i,n,r,s,o,a){const l=new Kh(e);for(;l.remLength()>=32;){const e=l.getInt(),h=o[e],c=l.getInt(),d=l.getInt(),u=l.getInt(),f=l.getFloat(),p=l.getFloat(),g=l.getFloat();let m;switch(l.getFloat(),a){case"min":m=f;break;case"max":m=p;break;default:m=0===u?0:g/u}if(!(e<t||e===t&&d<i)){if(e>n||e===n&&c>=r)break;Number.isFinite(m)&&s.push({chr:h,start:c,end:d,value:m})}}}class Qc{constructor(e){this.data=Lo(e).buffer}loadArrayBuffer(e,t){const i=t.range;return i?this.data.slice(i.start,i.start+i.size):this.data}async dataViewForRange(e,t){const i=Math.min(this.data.byteLength-e.start,e.size);return t?new Uint8Array(this.data,e.start,i):new DataView(this.data,e.start,i)}}class Xc{constructor(e,t){this.reader=new Pc(e,t),this.genome=t,this.format=e.format||"bigwig",this.wgValues={},this.queryable=!0}async getFeatures({chr:e,start:t,end:i,bpPerPixel:n,windowFunction:r}){const s="bigwig"===this.reader.type,o="all"===e.toLowerCase()?s?await this.getWGValues(r):[]:await this.reader.readFeatures(e,t,e,i,n,r);return s||Ic(o),o}async getHeader(){return this.reader.loadHeader()}getDefaultRange(){return void 0!==this.reader.totalSummary?this.reader.totalSummary.defaultRange:void 0}async defaultVisibilityWindow(){return this.reader.defaultVisibilityWindow}async getWGValues(e){const t=this.genome;if(this.wgValues[e])return this.wgValues[e];{const i=t.getGenomeLength()/1e3,n=await this.reader.readWGFeatures(i,e);let r=[];for(let e of n){const i=e.chr,n=t.getCumulativeOffset(i),s=Object.assign({},e);s.chr="all",s.start=n+e.start,s.end=n+e.end,r.push(s)}return this.wgValues[e]=r,r}}supportsWholeGenome(){return"bigwig"===this.reader.type}async trackType(){return this.reader.getTrackType()}}class Yc{constructor(e,t){this.config=e,this.genome=t,this.path=e.url,this.groupCache={},this.datasetCache={}}async readHeader(){if(void 0!==this.magic)return this;let e=await ta.loadArrayBuffer(this.path,Sa(this.config,{range:{start:0,size:64e3}})),t=new Kh(new DataView(e));if(this.magic=t.getInt(),this.version=t.getInt(),this.indexPos=t.getLong(),this.indexSize=t.getInt(),t.getInt(),this.version>=2){let e=t.getInt();for(this.windowFunctions=[];e-- >0;)this.windowFunctions.push(t.getString())}this.trackType=t.getString(),this.trackLine=t.getString();let i=t.getInt();for(this.trackNames=[];i-- >0;)this.trackNames.push(t.getString());this.genomeID=t.getString(),this.flags=t.getInt(),this.compressed=0!=(1&this.flags),e=await ta.loadArrayBuffer(this.path,Sa(this.config,{range:{start:this.indexPos,size:this.indexSize}})),t=new Kh(new DataView(e)),this.datasetIndex={};let n=t.getInt();for(;n-- >0;){const e=t.getString(),i=t.getLong(),n=t.getInt();this.datasetIndex[e]={position:i,size:n}}for(this.groupIndex={},n=t.getInt();n-- >0;){const e=t.getString(),i=t.getLong(),n=t.getInt();this.groupIndex[e]={position:i,size:n}}return this}async readDataset(e,t,i){const n=e+"_"+t+"_"+i;if(this.datasetCache[n])return this.datasetCache[n];{await this.readHeader();const r=this.version<2?"":"/"+t,s="all"===e.toLowerCase()||void 0===i?"0":i.toString();let o;o="raw"===t?"/"+e+"/raw":"/"+e+"/z"+s+r;const a=this.datasetIndex[o];if(void 0===a)return;const l=await ta.loadArrayBuffer(this.path,Sa(this.config,{range:{start:a.position,size:a.size}}));if(!l)return;const h=new Kh(new DataView(l));let c=h.getInt();const d={};for(;c-- >0;)d[h.getString()]=h.getString();const u=h.getString(),f=h.getFloat();let p=h.getInt();const g=[];for(;p-- >0;)g.push({position:h.getLong(),size:h.getInt()});const m={name:o,attributes:d,dataType:u,tileWidth:f,tiles:g};return this.datasetCache[n]=m,m}}async readRootGroup(){const e=this.genome,t=this.groupCache["/"];if(t)return t;{const t=await this.readGroup("/"),i=t.chromosomes,n=t.maxZoom;n&&(this.maxZoom=Number(n));const r=t.totalCount;r&&(t.totalCount=Number(r));const s={};return i&&i.split(",").forEach((function(t){const i=e.getChromosomeName(t);s[i]=t})),this.chrAliasTable=s,this.groupCache["/"]=t,t}}async readGroup(e){const t=this.groupCache[e];if(t)return t;{await this.readHeader();const t=this.groupIndex[e];if(void 0===t)return;const i=await ta.loadArrayBuffer(this.path,Sa(this.config,{range:{start:t.position,size:t.size}}));if(!i)return;const n=new Kh(new DataView(i)),r={name:e};let s=n.getInt();for(;s-- >0;){const e=n.getString(),t=n.getString();r[e]=t}return this.groupCache[e]=r,r}}async readTiles(e,t){if(e.sort((function(e,t){return e.position-t.position})),0===(e=e.filter((function(e){return e.size>0}))).length)return Promise.resolve([]);const i=e[0],n=e[e.length-1],r=i.position,s=n.position+n.size-r,o=await ta.loadArrayBuffer(this.path,Sa(this.config,{range:{start:r,size:s}})),a=[];for(let i of e){const e=i.position-r,n=i.size;if(n>0){let i;if(this.compressed){i=xo(o.slice(e,e+n)).buffer}else i=o.slice(e,e+n);const r=new Kh(new DataView(i)),s=r.getString();let l;switch(s){case"fixedStep":l=Kc(r,t);break;case"variableStep":l=Jc(r,t);break;case"bed":case"bedWithName":l=ed(r,t,s);break;default:throw"Unknown tile type: "+s}a.push(l)}}return a}async readTile(e,t){let i=await ta.loadArrayBuffer(this.path,Sa(this.config,{range:{start:e.position,size:e.size}}));if(this.compressed){i=xo(i).buffer}const n=new Kh(new DataView(i)),r=n.getString();switch(r){case"fixedStep":return Kc(n,t);case"variableStep":return Jc(n,t);case"bed":case"bedWithName":return ed(n,t,r);default:throw"Unknown tile type: "+r}}}function Kc(e,t){const i=e.getInt(),n=e.getInt(),r=e.getFloat(),s=[];let o=t;for(;o-- >0;){let t=i;const n=[];for(;t-- >0;)n.push(e.getFloat());s.push(n)}return{type:"fixedStep",start:n,span:r,data:s,nTracks:t,nPositions:i}}function Jc(e,t){const i=e.getInt(),n=e.getFloat(),r=e.getInt(),s=[];let o=r;for(;o-- >0;)s.push(e.getInt());e.getInt();const a=[];let l=t;for(;l-- >0;){o=r;const t=[];for(;o-- >0;)t.push(e.getFloat());a.push(t)}return{type:"variableStep",tileStart:i,span:n,start:s,data:a,nTracks:t,nPositions:r}}function ed(e,t,i){const n=e.getInt();let r=n;const s=[];for(;r-- >0;)s.push(e.getInt());r=n;const o=[];for(;r-- >0;)o.push(e.getInt());e.getInt();const a=[];let l=t;for(;l-- >0;){let t=n;const i=[];for(;t-- >0;)i.push(e.getFloat());a.push(i)}if("bedWithName"===i){r=n;const t=[];for(;r-- >0;)t.push(e.getString())}return{type:i,start:s,end:o,data:a,nTracks:t,nPositions:n}}class td{constructor(e,t){this.genome=t,this.windowFunction=e.windowFunction||"mean",this.reader=new Yc(e,t),this.queryable=!0}async getFeatures({chr:e,start:t,end:i,bpPerPixel:n}){if("all"===e.toLowerCase()){const e=[],t=this.genome;if(this.genome.wgChromosomeNames)for(let i of t.wgChromosomeNames){const r=t.getChromosome(i).bpLength;n=r/1e3;const s=await this._getFeatures(i,0,r,n);if(s)for(let i of s){const n=Object.assign({},i);n.chr="all",n.start=t.getGenomeCoordinate(i.chr,i.start),n.end=t.getGenomeCoordinate(i.chr,i.end),n._f=i,e.push(n)}}return e}return this._getFeatures(e,t,i,n)}async _getFeatures(e,t,i,n){const r=new el(e,t,i),s=this.genome;if(!this.rootGroup&&(this.rootGroup=await this.reader.readRootGroup(),!this.normalizationFactor)){const e=this.rootGroup.totalCount;e&&(this.normalizationFactor=1e6/e)}r.bpPerPixel=n;const o=function(e,t,i){var n=i.getChromosome(e).bpLength;return Math.ceil(Math.log(Math.max(0,n/(700*t)))/sd)}(e,n,s);let a=this.reader.chrAliasTable[e],l=this.reader.maxZoom;void 0===a&&(a=e),void 0===l&&(l=-1);const h=o>l?"raw":this.windowFunction,c=await this.reader.readDataset(a,h,o);if(null==c)return[];const d=c.tileWidth,u=Math.floor(t/d),f=Math.floor(i/d),p=await this.reader.readTiles(c.tiles.slice(u,f+1),1),g=[];for(let r of p)switch(r.type){case"bed":id(r,e,t,i,n,g);break;case"variableStep":nd(r,e,t,i,n,g);break;case"fixedStep":rd(r,e,t,i,n,g);break;default:throw"Unknown tile type: "+r.type}return g.sort((function(e,t){return e.start-t.start})),g}get supportsWholeGenome(){return!0}}function id(e,t,i,n,r,s){const o=e.nPositions,a=e.start,l=e.end,h=e.data[0];for(let e=0;e<o;e++){const r=a[e],o=l[e];if(!(o<i)){if(r>n)break;s.push({chr:t,start:r,end:o,value:h[e]})}}}function nd(e,t,i,n,r,s){const o=e.nPositions,a=e.start,l=e.span,h=e.data[0];for(let e=0;e<o;e++){const r=a[e],o=r+l;if(!(o<i)){if(r>n)break;s.push({chr:t,start:r,end:o,value:h[e]})}}}function rd(e,t,i,n,r,s){const o=e.nPositions;let a=e.start;const l=e.span,h=e.data[0];for(let e=0;e<o;e++){const r=a+l;if(a>n)break;r>=i&&(Number.isNaN(h[e])||s.push({chr:t,start:a,end:r,value:h[e]})),a=r}}var sd=Math.log(2);class od{constructor(e,t){this.config=e,this.genome=t,this.queryable=!1,this.searchable=!1!==e.searchable,this.updateFeatures(e.features)}updateFeatures(e){Fc(e=function(e,t){if(t)for(let i of e)i.chr=t.getChromosomeName(i.chr);return e}(e,this.genome)),this.config.mappings&&function(e,t){let i=Object.keys(t);e.forEach((function(e){i.forEach((function(i){e[i]=e[t[i]]}))}))}(e,this.config.mappings),this.featureCache=new ca(e,this.genome),(this.searchable||this.config.searchableFields)&&this.genome.addFeaturesToDB(e,this.config)}async getFeatures({chr:e,start:t,end:i,bpPerPixel:n,visibilityWindow:r}){const s=this.genome,o=s?s.getChromosomeName(e):e;return"all"===o.toLowerCase()?Nc(this.featureCache.getAllFeatures(),this.genome,this.maxWGCount):this.featureCache.queryFeatures(o,t,i)}getAllFeatures(){return this.featureCache.getAllFeatures()}supportsWholeGenome(){return!0}}const ad=new Set(["bigwig","bw","bigbed","bb","biginteract","biggenepred","bignarrowpeak"]);function ld(e,t){const i=e.format?e.format.toLowerCase():void 0;return e.features?new od(e,t):ad.has(i)?new Xc(e,t):"tdf"===i?new td(e,t):new Bc(e,t)}const hd=function(e,t){const{r:i,g:n,b:r}=pa[e];return`rgba(${i},${n},${r},${t})`}("nickel",2/16),cd=hd;class dd{constructor(e,t){if(this.url=e.url,e.name?this.name=e.name:e.url&&Yi(e.url)?this.name=e.url.name:e.url&&$i(e.url)&&!e.url.startsWith("data:")&&(this.name=Xi(e.url)),this.isUserDefined=e.isUserDefined,e.features)this.featureSource=new fd(e.features,t);else{if(e.format)e.format=e.format.toLowerCase();else{const t=Xi(e.url);e.format=Ha(t)}this.featureSource=e.featureSource||ld(e,t)}!0===this.isUserDefined?(this.color=e.color||cd,this.headerColor="rgba(155,185,129)"):(this.color=e.color||hd,this.headerColor="rgb(190,190,190)")}async getFeatures(e,t,i){return this.featureSource.getFeatures({chr:e,start:t,end:i})}async getAllFeatures(){return"function"==typeof this.featureSource.getAllFeatures?await this.featureSource.getAllFeatures():{}}addFeature(e){this.isUserDefined?this.featureSource.addFeature(e):console.error("Attempt to add ROI to non user-defined set")}removeFeature(e){this.isUserDefined?this.featureSource.removeFeature(e):console.error("Attempt to remove ROI from non user-defined set")}toJSON(){if(this.url)return{name:this.name,color:this.color,url:this.url,isUserDefined:this.isUserDefined};{const e=this.featureSource.getAllFeatures(),t=[];for(let i of Object.keys(e))for(let n of e[i])t.push(n);return{name:this.name,color:this.color,features:t,isUserDefined:this.isUserDefined}}}dispose(){for(let e of Object.keys(this))this[e]=void 0}}function ud(e,t,i,n){let r=Math.round((e-i)/n);let s=Math.round((t-i)/n)-r;return s<3&&(s=3,r-=1),{x:r,width:s}}class fd{constructor(e,t){this.featureMap={},this.genome=t;for(let i of e){const e=t?t.getChromosomeName(i.chr):i.chr;let n=this.featureMap[e];n||(n=[],this.featureMap[e]=n),n.push(i)}for(let e of Object.keys(this.featureMap))this.featureMap[e].sort(((e,t)=>e.start-t.start))}getFeatures({chr:e,start:t,end:i}){if("all"===e.toLowerCase())return Nc(this.featureMap,this.genome);{const n=this.featureMap[e];return n?n.filter((e=>e.end>t&&e.start<i)):[]}}getAllFeatures(){return this.featureMap}supportsWholeGenome(){return!0}addFeature(e){let t=this.featureMap[e.chr];t||(t=[],this.featureMap[e.chr]=t),t.push(e),t.sort(((e,t)=>e.start-t.start))}removeFeature({chr:e,start:t,end:i}){if(this.featureMap[e]){const n=`${e}-${t}-${i}`;this.featureMap[e]=this.featureMap[e].filter((e=>n!==`${e.chr}-${e.start}-${e.end}`))}}}class pd{constructor(e,t,i,n){this.rulerViewport=e,this.rulerSweeper=_t.div({class:"igv-ruler-sweeper"}),t.appendChild(this.rulerSweeper),this.browser=i,this.referenceFrame=n,this.isMouseHandlers=void 0,this.addBrowserObserver()}addBrowserObserver(){this.boundObserverHandler=(()=>{this.referenceFrame&&(Ml.isWholeGenomeView(this.referenceFrame.chr)?this.removeMouseHandlers():this.addMouseHandlers())}).bind(this),this.browser.on("locuschange",this.boundObserverHandler)}removeBrowserObserver(){this.browser.off("locuschange",this.boundObserverHandler)}addMouseHandlers(){if(!0===this.isMouseHandlers)return;let e,t,i,n,r,s;this.boundContentMouseDownHandler=function(s){e=!0,t=!0;const{x:o}=_t.translateMouseCoordinates(s,this.rulerViewport.contentDiv);n=i=o,r=1,this.rulerSweeper.style.display="block",this.rulerSweeper.style.backgroundColor=!0===s.shiftKey?cd:"rgba(68, 134, 247, 0.25)",this.rulerSweeper.style.left=`${n}px`,this.rulerSweeper.style.width=`${r}px`}.bind(this),this.rulerViewport.contentDiv.addEventListener("mousedown",this.boundContentMouseDownHandler),this.boundDocumentMouseMoveHandler=function(o){let a;if(e&&t){const{x:e}=_t.translateMouseCoordinates(o,this.rulerViewport.contentDiv);a=Math.max(Math.min(e,this.rulerViewport.contentDiv.clientWidth),0),s=a-i,r=Math.abs(s),this.rulerSweeper.style.width=`${r}px`,s<0&&(n=i+s,this.rulerSweeper.style.left=`${n}px`)}}.bind(this),document.addEventListener("mousemove",this.boundDocumentMouseMoveHandler),this.boundDocumentMouseUpHandler=function(i){let s;if(!0===e&&!0===t&&(e=t=void 0,this.rulerSweeper.style.display="none",r>1)){s={start:Math.floor(this.referenceFrame.calculateEnd(n)),end:Math.floor(this.referenceFrame.calculateEnd(n+r))};!0===i.shiftKey?this.browser.roiManager.updateUserDefinedROISet(Object.assign({chr:this.referenceFrame.chr},s)):(Ea(this.browser.genome.getChromosome(this.referenceFrame.chr).bpLength,s,this.browser.minimumBases()),function(e,t,i){e.start=Math.round(t.start),e.end=Math.round(t.end),e.bpPerPixel=(e.end-e.start)/i}(this.referenceFrame,s,this.rulerViewport.contentDiv.clientWidth),this.browser.updateViews(this.referenceFrame))}}.bind(this),document.addEventListener("mouseup",this.boundDocumentMouseUpHandler),this.isMouseHandlers=!0}removeMouseHandlers(){this.rulerViewport.contentDiv.removeEventListener("mousedown",this.boundContentMouseDownHandler),document.removeEventListener("mousemove",this.boundDocumentMouseMoveHandler),document.removeEventListener("mouseup",this.boundDocumentMouseUpHandler),this.isMouseHandlers=!1}dispose(){this.removeBrowserObserver(),this.removeMouseHandlers(),this.rulerSweeper.remove()}}class gd{constructor(e){this.paired=!0,this.firstAlignment=e,this.chr=e.chr,this.readName=e.readName,e.start<e.mate.position?(this.start=e.start,this.scStart=e.scStart,this.connectingStart=e.start+e.lengthOnRef,this.connectingEnd=e.mate.position):(this.start=e.mate.position,this.scStart=this.start,this.connectingStart=e.mate.position,this.connectingEnd=e.start),this.end=Math.max(e.mate.position,e.start+e.lengthOnRef),this.lengthOnRef=this.end-this.start;let t=Math.max(this.end,e.scStart+e.scLengthOnRef);this.scLengthOnRef=t-this.scStart}setSecondAlignment(e){this.secondAlignment=e;const t=this.firstAlignment;e.start>t.start?this.connectingEnd=e.start:this.connectingStart=e.start+e.lengthOnRef,this.start=Math.min(t.start,e.start),this.end=Math.max(t.start+t.lengthOnRef,e.start+e.lengthOnRef),this.lengthOnRef=this.end-this.start,this.scStart=Math.min(t.scStart,e.scStart);const i=Math.max(t.scStart+t.scLengthOnRef,e.scStart+e.scLengthOnRef);this.scLengthOnRef=i-this.scStart}containsLocation(e,t){const i=t?this.scStart:this.start,n=t?this.scLengthOnRef:this.lengthOnRef;return e>=i&&e<=i+n}alignmentContaining(e,t){return this.firstAlignment.containsLocation(e,t)?this.firstAlignment:this.secondAlignment&&this.secondAlignment.containsLocation(e,t)?this.secondAlignment:void 0}popupData(e){let t=this.firstAlignment.popupData(e);return this.secondAlignment&&(t.push("-------------------------------"),t=t.concat(this.secondAlignment.popupData(e))),t}isPaired(){return!0}isMateMapped(){return!0}isProperPair(){return this.firstAlignment.isProperPair()}get fragmentLength(){return Math.abs(this.firstAlignment.fragmentLength)}firstOfPairStrand(){return this.firstAlignment.isFirstOfPair()?this.firstAlignment.strand:this.secondAlignment&&this.secondAlignment.isFirstOfPair()?this.secondAlignment.strand:this.firstAlignment.mate.strand}hasTag(e){return this.firstAlignment.hasTag(e)||this.secondAlignment&&this.secondAlignment.hasTag(e)}}class md{constructor(){this.alignments=[],this.score=void 0}findAlignment(e){const t=(e,t)=>t>=e.start&&t<e.start+e.lengthOnRef;let i;for(let n=0;n<this.alignments.length;n++){const r=this.alignments[n];if(e>=r.start&&e<r.start+r.lengthOnRef){r.paired?r.firstAlignment&&t(r.firstAlignment,e)?i=r.firstAlignment:r.secondAlignment&&t(r.secondAlignment,e)&&(i=r.secondAlignment):i=r;break}}return i}getSortValue({position:e,option:t,tag:i},n){t||(t="BASE");const r=this.findAlignment(e);if(void 0===r)return Number.MAX_VALUE;switch(t){case"NUCLEOTIDE":case"BASE":return function(e,t,i){let n;const r=Math.floor(i)-t.start;r<t.sequence.length&&(n=t.sequence.charAt(r));if(!n)return 0;const s=e.readBaseAt(i),o=e.readBaseQualityAt(i),a=t.coverageMap,l=Math.floor(i-a.bpStart),h=a.coverage[l];let c=0;if(e.insertions)for(let t of e.insertions)t.start===i&&(c=-h.ins);if(s)if(n=n.toUpperCase(),"N"===s&&0===c)c=2;else if(n!==s&&"="!==s||0!==c){if("X"===s||n!==s){c-=h["pos"+s]+h["neg"+s]+o/1e3}}else c=4-o/1e3;else{const e=h.del;e>0?c-=e:0===c&&(c=1)}return c}(r,n,e);case"STRAND":return r.strand?1:-1;case"START":return r.start;case"TAG":return r.tags()[i];case"READ_NAME":return r.readName;case"INSERT_SIZE":return-Math.abs(r.fragmentLength);case"GAP_SIZE":return-r.gapSizeAt(e);case"MATE_CHR":return r.mate;case"MQ":return void 0===r.mq?Number.MAX_VALUE:-r.mq;case"ALIGNED_READ_LENGTH":return-r.lengthOnRef;default:return Number.MAX_VALUE}}}function bd(e){return e.isPaired()&&e.mate&&e.isMateMapped()&&e.chr===e.mate.chr&&(e.isFirstOfPair()||e.isSecondOfPair())&&!(e.isSecondary()||e.isSupplementary())}function wd(e){const t=[];for(let i of e)for(let e of i.alignments)e instanceof gd?(e.firstAlignment&&t.push(e.firstAlignment),e.secondAlignment&&t.push(e.secondAlignment)):t.push(e);return t}function vd(e,t,i,n){if(e){if(0===e.length)return[];{e.sort((function(e,t){return n?e.scStart-t.scStart:e.start-t.start}));const t=[];let i,r=0,s=0;const o=new Set,a=()=>{i=new md,t.push(i),r=0,s=0,o.clear()};for(a();e.length>0;)if(s>=0&&s<e.length){const t=e[s];o.add(t),i.alignments.push(t),r=n?t.scStart+t.scLengthOnRef+2:t.start+t.lengthOnRef+2,s=yd(e,(e=>(n?e.scStart:e.start)>r),s)}else e=e.filter((e=>!o.has(e))),a();return t}}}function yd(e,t,i){let n=i-1,r=e.length;for(;1+n<r;){const i=n+(r-n>>1);t(e[i])?r=i:n=i}return r}class _d{constructor(e,t,i,{samplingWindowSize:n,samplingDepth:r,pairsSupported:s,alleleFreqThreshold:o}){this.chr=e,this.start=Math.floor(t),this.end=Math.ceil(i),this.length=i-t,this.alleleFreqThreshold=void 0===o?.2:o,this.coverageMap=new kd(e,t,i,this.alleleFreqThreshold),this.alignments=[],this.downsampledIntervals=[],this.samplingWindowSize=void 0===n?100:n,this.samplingDepth=void 0===r?1e3:r,this.pairsSupported=void 0===s||s,this.paired=!1,this.pairsCache={},this.downsampledReads=new Set,this.currentBucket=new xd(this.start,this.start+this.samplingWindowSize,this),this.filter=function(e){return e.isMapped()&&!e.isFailsVendorQualityCheck()}}push(e){!1!==this.filter(e)&&(this.coverageMap.incCounts(e),this.pairsSupported&&this.downsampledReads.has(e.readName)||(e.start>=this.currentBucket.end&&(this.finishBucket(),this.currentBucket=new xd(e.start,e.start+this.samplingWindowSize,this)),this.currentBucket.addAlignment(e)))}forEach(e){this.alignments.forEach(e)}finish(){void 0!==this.currentBucket&&this.finishBucket(),this.alignments.sort((function(e,t){return e.start-t.start})),this.pairsCache=void 0,this.downsampledReads=void 0}contains(e,t,i){return this.chr===e&&this.start<=t&&this.end>=i}hasDownsampledIntervals(){return this.downsampledIntervals&&this.downsampledIntervals.length>0}finishBucket(){this.alignments=this.alignments.concat(this.currentBucket.alignments),this.currentBucket.downsampledCount>0&&this.downsampledIntervals.push(new Sd(this.currentBucket.start,this.currentBucket.end,this.currentBucket.downsampledCount)),this.paired=this.paired||this.currentBucket.paired}setViewAsPairs(e){let t;t=e?function(e){const t={},i=[];for(let n of e)for(let e of n.alignments)if(bd(e)){let n=t[e.readName];n?(n.setSecondAlignment(e),t[e.readName]=void 0):(n=new gd(e),t[e.readName]=n,i.push(n))}else i.push(e);return i}(this.packedAlignmentRows):wd(this.packedAlignmentRows),this.packedAlignmentRows=vd(t,this.start,this.end)}setShowSoftClips(e){const t=this.allAlignments();this.packedAlignmentRows=vd(t,this.start,this.end,e)}repack(e,t){const i=this.allAlignments();this.packedAlignmentRows=vd(i,this.start,this.end,t)}allAlignments(){const e=[];for(let t of this.packedAlignmentRows)for(let i of t.alignments)e.push(i);return e}getMax(e,t){return this.coverageMap.getMax(e,t)}sortRows(e){const t=[],i=[];for(let n of this.packedAlignmentRows){void 0!==n.findAlignment(e.position)?t.push(n):i.push(n)}t.sort(((t,i)=>{const n=e.direction,r=t.getSortValue(e,this),s=i.getSortValue(e,this);if(void 0===s&&void 0!==s)return 1;if(void 0!==r&&void 0===s)return-1;const o=r>s?1:r<s?-1:0;return!0===n?o:-o}));for(let e of i)t.push(e);this.packedAlignmentRows=t}}class xd{constructor(e,t,i){this.start=e,this.end=t,this.alignments=[],this.downsampledCount=0,this.samplingDepth=i.samplingDepth,this.pairsSupported=i.pairsSupported,this.downsampledReads=i.downsampledReads,this.pairsCache=i.pairsCache}addAlignment(e){var t,i,n;if(this.pairsSupported&&bd(e)&&(n=this.pairsCache[e.readName]))return n.setSecondAlignment(e),void(this.pairsCache[e.readName]=void 0);this.alignments.length<this.samplingDepth?this.pairsSupported&&bd(e)?(n=new gd(e),this.paired=!0,this.pairsCache[e.readName]=n,this.alignments.push(n)):this.alignments.push(e):((t=Math.floor(Math.random()*(this.samplingDepth+this.downsampledCount-1)))<this.samplingDepth?(i=this.alignments[t],this.pairsSupported&&bd(e)?(void 0!==this.pairsCache[i.readName]&&(this.pairsCache[i.readName]=void 0),n=new gd(e),this.paired=!0,this.pairsCache[e.readName]=n,this.alignments[t]=n):this.alignments[t]=e,this.downsampledReads.add(i.readName)):this.downsampledReads.add(e.readName),this.downsampledCount++)}}class kd{constructor(e,t,i,n){this.chr=e,this.bpStart=t,this.length=i-t,this.coverage=new Array(this.length),this.maximum=0,this.threshold=n,this.qualityWeight=!0}getMax(e,t){let i=0;const n=this.coverage.length;for(let r=0;r<n;r++){const n=this.bpStart+r;if(n>t)break;const s=this.coverage[r];n>=e&&s&&(i=Math.max(i,s.total))}return i}incCounts(e){var t=this;if(void 0===e.blocks?i(e):e.blocks.forEach((function(e){i(e)})),e.gaps)for(let i of e.gaps)if("D"===i.type){const e=i.start-t.bpStart;for(let n=e;n<e+i.len;n++)n<0||(this.coverage[n]||(this.coverage[n]=new Cd(t.threshold)),this.coverage[n].del++)}if(e.insertions)for(let i of e.insertions){const e=i.start-this.bpStart;e<0||(this.coverage[e]||(this.coverage[e]=new Cd(t.threshold)),this.coverage[e].ins++)}function i(i){if("S"===i.type)return;const n=e.seq,r=e.qual,s=i.seqOffset;for(let o=i.start-t.bpStart,a=0;a<i.len;o++,a++){t.coverage[o]||(t.coverage[o]=new Cd(t.threshold));const i=null==n?"N":n.charAt(s+a),l=e.strand?"pos"+i:"neg"+i,h=r&&s+a<r.length?r[s+a]:30;t.coverage[o][l]+=1,t.coverage[o]["qual"+i]+=h,t.coverage[o].total+=1,t.coverage[o].qual+=h,t.maximum=Math.max(t.coverage[o].total,t.maximum)}}}}class Cd{constructor(e){this.qualityWeight=!0,this.posA=0,this.negA=0,this.posT=0,this.negT=0,this.posC=0,this.negC=0,this.posG=0,this.negG=0,this.posN=0,this.negN=0,this.pos=0,this.neg=0,this.qualA=0,this.qualT=0,this.qualC=0,this.qualG=0,this.qualN=0,this.qual=0,this.total=0,this.del=0,this.ins=0,this.threshold=e}hoverText(){const e=this.posA+this.posT+this.posC+this.posG+this.posN,t=this.negA+this.negT+this.negC+this.negG+this.negN;return`${this.total} (${e}+, ${t}-)`}isMismatch(e){const t=this.threshold*(this.qualityWeight&&this.qual?this.qual:this.total);let i=0;for(let t of["A","T","C","G"])t!==e&&(i+=this.qualityWeight&&this.qual?this["qual"+t]:this["pos"+t]+this["neg"+t]);return i>=t}}class Sd{constructor(e,t,i){this.start=e,this.end=t,this.counts=i}popupData(e){return[{name:"start",value:this.start+1},{name:"end",value:this.end},{name:"# downsampled:",value:this.counts}]}}class Ad{constructor(e){const t=e.split(",");this.chr=t[0],this.start=parseInt(t[1]),this.strand=t[2].charAt(0),this.mapQ=parseInt(t[4]),this.numMismatches=parseInt(t[5]),this.lenOnRef=qd.computeLengthOnReference(t[3])}printString(){return this.chr+":"+Wi(this.start)+"-"+Wi(this.start+this.lenOnRef)+" ("+this.strand+") = "+Wi(this.lenOnRef)+"bp @MAPQ: "+this.mapQ+" NM: "+this.numMismatches}}function Ed(e){return e.split(";").filter((e=>e.length>0)).map((e=>new Ad(e)))}const Td={c:1,C:1,s:2,S:2,i:4,I:4,f:4};class Md{constructor(){this.hidden=!1}isMapped(){return 0==(4&this.flags)}isPaired(){return 0!=(1&this.flags)}isProperPair(){return 0!=(2&this.flags)}isFirstOfPair(){return 0!=(64&this.flags)}isSecondOfPair(){return 0!=(128&this.flags)}isSecondary(){return 0!=(256&this.flags)}isSupplementary(){return 0!=(2048&this.flags)}isFailsVendorQualityCheck(){return 0!=(512&this.flags)}isDuplicate(){return 0!=(1024&this.flags)}isMateMapped(){return 0==(8&this.flags)}isNegativeStrand(){return 0!=(16&this.flags)}isMateNegativeStrand(){return 0!=(32&this.flags)}hasTag(e){return(this.tagDict||Ld(this.tagBA)).hasOwnProperty(e)}tags(){return this.tagDict||(this.tagBA?(this.tagDict=Ld(this.tagBA),this.tagBA=void 0):this.tagDict={}),this.tagDict}containsLocation(e,t){const i=t?this.scStart:this.start,n=t?this.scLengthOnRef:this.lengthOnRef;return e>=i&&e<=i+n}popupData(e){const t=[];if(e=Math.floor(e),this.insertions){const n=this.seq;for(let r of this.insertions){var i=r.start;if(e===i||e===i-1)return t.push({name:"Insertion",value:n.substr(r.seqOffset,r.len)}),t.push({name:"Location",value:i}),t}}t.push({name:"Read Name",value:this.readName}),t.push("<hr/>"),t.push({name:"Alignment Start",value:Wi(1+this.start),borderTop:!0}),t.push({name:"Read Strand",value:!0===this.strand?"(+)":"(-)",borderTop:!0});let n=this.cigar;if(n&&n.length>50){const e=25;n=`${n.substring(0,e-2)} ... ${n.substring(n.length-e+2)}`}t.push({name:"Cigar",value:n}),t.push({name:"Mapping Quality",value:this.mq}),t.push({name:"Secondary",value:o(this.isSecondary())}),t.push({name:"Supplementary",value:o(this.isSupplementary())}),t.push({name:"Duplicate",value:o(this.isDuplicate())}),t.push({name:"Failed QC",value:o(this.isFailsVendorQualityCheck())}),this.isPaired()&&(t.push("<hr/>"),t.push({name:"First in Pair",value:!this.isSecondOfPair(),borderTop:!0}),t.push({name:"Mate is Mapped",value:o(this.isMateMapped())}),this.pairOrientation&&t.push({name:"Pair Orientation",value:this.pairOrientation}),this.isMateMapped()&&(t.push({name:"Mate Chromosome",value:this.mate.chr}),t.push({name:"Mate Start",value:this.mate.position+1}),t.push({name:"Mate Strand",value:!0===this.mate.strand?"(+)":"(-)"}),t.push({name:"Insert Size",value:this.fragmentLength})));const r=this.tags();if(r.hasOwnProperty("SA")){t.push("<hr/>"),t.push({name:"Supplementary Alignments",value:""});const e=Ed(r.SA);if(e){t.push("<ul>");for(let i of e)t.push(`<li>${i.printString()}</li>`);t.push("</ul>")}}const s=new Set(["SA","MD"]);t.push("<hr/>");for(let e in r)s.has(e)||t.push({name:e,value:r[e]});return t.push({name:"Hidden Tags",value:"SA, MD"}),t.push("<hr/>"),t.push({name:"Genomic Location: ",value:Wi(1+e)}),t.push({name:"Read Base:",value:this.readBaseAt(e)}),t.push({name:"Base Quality:",value:this.readBaseQualityAt(e)}),t;function o(e){return e?"Yes":"No"}}readBaseAt(e){const t=Rd(this.blocks,e);if(t){if("*"===this.seq)return"*";{const i=t.seqIndexAt(e);return this.seq[i]}}}readBaseQualityAt(e){const t=Rd(this.blocks,e);if(t){if("*"===this.qual)return 30;{const i=t.seqIndexAt(e);return i>=0&&this.qual&&i<this.qual.length?this.qual[i]:30}}}gapSizeAt(e){if(this.gaps)for(let t of this.gaps)if(e>=t.start&&e<t.start+t.len)return t.len;return 0}softClippedBlocks(){let e,t,i;for(let n of this.blocks)"S"===n.type?i?t=n:e=n:"H"!==n.type&&(i=!0);return{left:e,right:t}}}function Rd(e,t){for(let i=0;i<e.length;i++){const n=e[i];if(t>=n.start&&t<n.start+n.len)return n}}function Ld(e){let t=0;const i=e.length,n={};for(;t<i;){const i=String.fromCharCode(e[t])+String.fromCharCode(e[t+1]);t+=2;const s=String.fromCharCode(e[t++]);let o;if("A"===s)o=String.fromCharCode(e[t]),t++;else if("i"===s||"I"===s)o=Id(e,t),t+=4;else if("c"===s)o=Bd(e,t),t++;else if("C"===s)o=Od(e,t),t++;else if("s"===s||"S"===s)o=Nd(e,t),t+=2;else if("f"===s)o=Fd(e,t),t+=4;else if("Z"===s)for(o="";;){var r=e[t++];if(0===r)break;o+=String.fromCharCode(r)}else{if("B"!==s){o="Error unknown type: "+s,n[i]=o;break}{const r=String.fromCharCode(e[t++]);let s=Td[r];if(void 0===s){n[i]=`Error: unknown element type '${r}'`;break}t+=4+Id(e,t)*s,o="[not shown]"}}n[i]=o}return n}function Id(e,t){return e[t+3]<<24|e[t+2]<<16|e[t+1]<<8|e[t]}function Nd(e,t){return e[t+1]<<8|e[t]}function Fd(e,t){return new DataView(e.buffer).getFloat32(t)}function Bd(e,t){return new DataView(e.buffer).getInt8(t)}function Od(e,t){return new DataView(e.buffer).getUint8(t)}class Dd{constructor(e){e&&Object.assign(this,e)}seqIndexAt(e){return Math.floor(e)-this.start+this.seqOffset}}class Pd{constructor(e){e||(e={}),this.vendorFailed=void 0===e.vendorFailed||e.vendorFailed,this.duplicates=void 0===e.duplicates||e.duplicates,this.secondary=e.secondary||!1,this.supplementary=e.supplementary||!1,this.mqThreshold=void 0===e.mqThreshold?0:e.mqThreshold,e.readgroups&&(this.readgroups=new Set(e.readgroups))}pass(e){if(this.vendorFailed&&e.isFailsVendorQualityCheck())return!1;if(this.duplicates&&e.isDuplicate())return!1;if(this.secondary&&e.isSecondary())return!1;if(this.supplementary&&e.isSupplementary())return!1;if(e.mq<this.mqThreshold)return!1;if(this.readgroups){var t=e.tags().RG;return this.readgroups.has(t)}return!0}}const zd=["=","A","C","x","G","x","x","x","T","x","x","x","x","x","x","N"],Hd=["M","I","D","N","S","H","P","=","X","?","?","?","?","?","?","?"],Ud=$d(new Uint8Array([66,65,77,1]),0),Vd=1e4,qd={readHeader:function(e,t,i){return ta.loadArrayBuffer(e,t).then((function(e){var t;return t=Ao(e),qd.decodeBamHeader(t,i)}))},decodeBamHeader:function(e,t){var i,n,r,s,o;if((i=$d(e,0))!==Ud)throw new Error("BAM header errror: bad magic number.  This could be caused by either a corrupt or missing file.");n=$d(e,4);for(var a=0;a<n;++a)String.fromCharCode(e[a+8]);var l=$d(e,n+8),h=n+12;for(r={},s=[],o={},a=0;a<l;++a){for(var c=$d(e,h),d="",u=0;u<c-1;++u)d+=String.fromCharCode(e[h+4+u]);$d(e,h+c+4),r[d]=a,s[a]=d,t&&(o[t.getChromosomeName(d)]=d),h=h+8+c}return{magicNumber:i,size:h,chrNames:s,chrToIndex:r,chrAliasTable:o}},bam_tag2cigar:function(e,t,i,n,r,s){function o(e){return"C"===e||"c"===e||"A"===e?1:"S"===e||"s"===e?2:"I"===e||"i"===e||"f"===e?4:0}if(1!==s.length||r.start<0)return!1;for(var a=i+(n+1>>1)+n;a+4<t;){if("CG"===String.fromCharCode(e[a])+String.fromCharCode(e[a+1]))break;var l=String.fromCharCode(e[a+2]);if("B"===l)a+=8+o(l=String.fromCharCode(e[a+3]))*$d(e,a+4);else if("Z"===l||"H"===l)for(a+=3;0!==e[a++];);else a+=3+o(l)}if(a>=t)return!1;if("B"!==String.fromCharCode(e[a+2])||"I"!==String.fromCharCode(e[a+3]))return!1;var h=$d(e,a+4),c=a+8;if(c+4*h>t)return!1;var d="",u=0;s.length=0,a=c;for(var f=0;f<h;++f,a+=4){var p=$d(e,a),g=p>>4,m=Hd[15&p];"M"!==m&&"EQ"!==m&&"X"!==m&&"D"!==m&&"N"!==m&&"="!==m||(u+=g),d=d+g+m,s.push({len:g,ltr:m})}return r.cigar=d,r.lengthOnRef=u,!0},decodeBamRecords:function(e,t,i,n,r,s,o,a){for(;t<e.length;){const u=t+$d(e,t)+4,f=new Md,p=$d(e,t+4),g=$d(e,t+8);if(u>e.length)return;if(p<0){t=u;continue}if(void 0!==r&&(p>r||g>o))return!0;if(void 0!==r&&p<r){t=u;continue}const m=$d(e,t+12),b=(65280&m)>>8,w=255&m,v=$d(e,t+16),y=(4294901760&v)>>16,_=65535&v,x=$d(e,t+20),k=$d(e,t+24),C=$d(e,t+28),S=$d(e,t+32);let A=[];for(let i=0;i<w-1;++i)A.push(String.fromCharCode(e[t+36+i]));A=A.join("");let E=0,T="",M=t+36+w;const R=[];let L;for(let t=0;t<_;++t){var l=$d(e,M),h=l>>4,c=Hd[15&l];"M"!==c&&"EQ"!==c&&"X"!==c&&"D"!==c&&"N"!==c&&"="!==c||(E+=h),T=T+h+c,M+=4,L={len:h,ltr:c},R.push(L)}if(f.chr=n[p],f.start=g,f.flags=y,f.strand=!(16&y),f.readName=A,f.cigar=T,f.lengthOnRef=E,f.fragmentLength=S,f.mq=b,qd.bam_tag2cigar(e,u,M,x,f,R),f.end=f.start+f.lengthOnRef,f.end<s){t=u;continue}let I=[];const N=x+1>>1;for(let t=0;t<N;++t){var d=e[M+t];I.push(zd[(240&d)>>4]),I.push(zd[15&d])}I=I.slice(0,x).join(""),M+=N;const F=[];for(let t=0;t<x;++t)F.push(e[M+t]);M+=x,k>=0&&(f.mate={chr:n[k],position:C,strand:!(32&y)}),f.seq=I,f.qual=F,f.tagBA=new Uint8Array(e.buffer.slice(M,u)),this.setPairOrientation(f),(void 0===a||a.pass(f))&&(jd(f,R),i.push(f)),t=u}},decodeSamRecords:function(e,t,i,n,r,s){var o,a,l,h,c,d,u,f,p,g;for(h=(o=Gi(e)).length,!1,a=0;a<h;a++)if(c=o[a].split("\t"),(p=new Md).chr=c[2],p.start=Number.parseInt(c[3])-1,p.flags=Number.parseInt(c[1]),p.readName=c[0],p.strand=!(16&p.flags),p.mq=Number.parseInt(c[4]),p.cigar=c[5],p.fragmentLength=Number.parseInt(c[8]),p.seq=c[9],"*"!==p.chr&&p.isMapped()&&p.chr===i){if(p.start>r)break;if(f=0,(g=Wd(p.cigar)).forEach((function(e){var t=e.len,i=e.ltr;"M"!==i&&"EQ"!==i&&"X"!==i&&"D"!==i&&"N"!==i&&"="!==i||(f+=t)})),p.lengthOnRef=f,!(p.start+f<n)){for(d=c[10],p.qual=[],l=0;l<d.length;l++)p.qual[l]=d.charCodeAt(l)-33;p.tagDict=c.length<11?{}:Gd(c.slice(11)),p.isMateMapped()&&(u=c[6],p.mate={chr:"="===u?p.chr:u,position:Number.parseInt(c[7]),strand:!(32&p.flags)}),this.setPairOrientation(p),(void 0===s||s.pass(p))&&(jd(p,g),t.push(p))}}},setReaderDefaults:function(e,t){e.filter=new Pd(t.filter),t.readgroup&&(e.filter.readgroups=new Set([t.readgroup])),e.alleleFreqThreshold=void 0===t.alleleFreqThreshold?.2:t.alleleFreqThreshold,e.samplingWindowSize=void 0===t.samplingWindowSize?100:t.samplingWindowSize,e.samplingDepth=void 0===t.samplingDepth?500:t.samplingDepth,e.samplingDepth>Vd&&(console.log("Warning: attempt to set sampling depth > maximum value of "+Vd),e.samplingDepth=Vd),t.viewAsPairs?e.pairsSupported=!0:e.pairsSupported=void 0===t.pairsSupported||t.pairsSupported},setPairOrientation:function(e){if(e.isMapped()&&e.mate&&e.isMateMapped()&&e.mate.chr===e.chr){var t=e.strand?"F":"R",i=e.mate,n=i.strand?"F":"R",r=" ",s=" ";e.isFirstOfPair()?(r="1",s="2"):e.isSecondOfPair()&&(r="2",s="1");var o=[],a=e.fragmentLength,l=e.end-e.start;if(0===a)a=(e.start<i.position?i.position+l:i.position-l)-e.start;a>0?(o[0]=t,o[1]=r,o[2]=n,o[3]=s):(o[2]=t,o[3]=r,o[0]=n,o[1]=s),e.pairOrientation=o.join("")}},computeLengthOnReference:function(e){let t=0,i="";for(let n=0;n<e.length;n++){const r=e.charCodeAt(n);if(r>47&&r<58)i+=e.charAt(n);else{switch(r){case 78:case 68:case 77:case 61:case 88:t+=parseInt(i.toString())}i=""}}return t}};function jd(e,t){const i=[];let n,r,s=0,o=e.start;e.scStart=e.start,e.scLengthOnRef=e.lengthOnRef;for(let a of t){let t;switch(a.ltr){case"H":case"P":break;case"S":t=o,e.scLengthOnRef+=a.len,0===i.length&&(e.scStart-=a.len,t-=a.len),i.push(new Dd({start:t,seqOffset:s,len:a.len,type:"S"})),s+=a.len;break;case"N":case"D":void 0===r&&(r=[]),r.push({start:o,len:a.len,type:a.ltr}),o+=a.len;break;case"I":void 0===n&&(n=[]),n.push(new Dd({start:o,len:a.len,seqOffset:s,type:"I"})),s+=a.len;break;case"M":case"EQ":case"=":case"X":i.push(new Dd({start:o,seqOffset:s,len:a.len,type:"M"})),s+=a.len,o+=a.len;break;default:console.log("Error processing cigar element: "+a.len+a.ltr)}}e.blocks=i,e.insertions=n,e.gaps=r}function $d(e,t){return e[t+3]<<24|e[t+2]<<16|e[t+1]<<8|e[t]}function Wd(e){var t,i,n,r,s,o,a,l,h;for(t=[],i=[],s=null,r=e.length,n=0;n<r;n++)o=e.charAt(n),h=void 0,(h=o.charCodeAt(0))>=48&&h<=57?i.push(o):(a=o,l=Number.parseInt(i.join("")),i=[],null!==s&&s.ltr===a?s.len+=l:(s={len:l,ltr:a},t.push(s)));return t}function Gd(e){var t={};return e.forEach((function(e){var i=e.split(":");t[i[0]]=i[2]})),t}class Zd{constructor(e,t){this.config=e,this.genome=t,this.bamPath=e.url,this.isDataUri=Ra(e.url),qd.setReaderDefaults(this,e)}async readAlignments(e,t,i){if(this.alignmentCache){const n=this.header,r=n.chrAliasTable.hasOwnProperty(e)?n.chrAliasTable[e]:e,s=this.alignmentCache.queryFeatures(r,t,i),o=new _d(e,t,i,this.config);for(let e of s)o.push(e);return o.finish(),o}if(this.isDataUri){const n=Ao(function(e){const t=e.split(","),i=t[0].split(":")[1];let n=t[1];n=i.indexOf("base64")>=0?atob(n):decodeURI(n);const r=new Uint8Array(n.length);for(var s=0;s<n.length;s++)r[s]=n.charCodeAt(s);return r}(this.bamPath).buffer);return this.parseAlignments(n),this.fetchAlignments(e,t,i)}{const n=Ao(await ta.loadArrayBuffer(this.bamPath,Sa(this.config)));return this.parseAlignments(n),this.fetchAlignments(e,t,i)}}parseAlignments(e){const t=[];this.header=qd.decodeBamHeader(e),qd.decodeBamRecords(e,this.header.size,t,this.header.chrNames),this.alignmentCache=new ca(t,this.genome)}fetchAlignments(e,t,i){const n=this.header.chrAliasTable.hasOwnProperty(e)?this.header.chrAliasTable[e]:e,r=this.alignmentCache.queryFeatures(n,t,i),s=new _d(e,t,i,this.config);for(let e of r)s.push(e);return s.finish(),s}}class Qd{constructor(e,t){this.config=e,this.genome=t,this.bamPath=e.url,this.baiPath=e.indexURL,qd.setReaderDefaults(this,e),this._blockLoader=new dc(e)}async readAlignments(e,t,i){const n=(await this.getChrIndex())[this.chrAliasTable.hasOwnProperty(e)?this.chrAliasTable[e]:e],r=new _d(e,t,i,this.config);if(void 0===n)return r;{const e=(await this.getIndex()).chunksForRange(n,t,i);if(!e||0===e.length)return r;for(let s of e){const e=await this._blockLoader.getData(s.minv,s.maxv);if(qd.decodeBamRecords(e,s.minv.offset,r,this.indexToChr,n,t,i,this.filter))break}return r.finish(),r}}async getHeader(){if(!this.header){const e=this.genome,t=await this.getIndex();let i;if(t.firstBlockPosition){const e=Sa(this.config,{range:{start:t.firstBlockPosition,size:26}}),n=Eo(await ta.loadArrayBuffer(this.bamPath,e));i=t.firstBlockPosition+n}else i=64e3;const n=Sa(this.config,{range:{start:0,size:i}});this.header=await qd.readHeader(this.bamPath,n,e)}return this.header}async getIndex(){const e=this.genome;return this.index||(this.index=await sc(this.baiPath,this.config,e)),this.index}async getChrIndex(){if(this.chrToIndex)return this.chrToIndex;{const e=await this.getHeader();return this.chrToIndex=e.chrToIndex,this.indexToChr=e.chrNames,this.chrAliasTable=e.chrAliasTable,this.chrToIndex}}}class Xd{constructor(e,t){this.config=e,this.genome=t;const i={};e.sources.sequences.forEach((function(n){const r=t?t.getChromosomeName(n):n;i[r]=function(e,t,i){const n={url:e.sources.url.replace("$CHR",i)};e.sources.indexURL&&(n.indexURL=e.sources.indexURL.replace("$CHR",i));const r=Object.assign(e,n);return new Qd(r,t)}(e,t,n)})),this.bamReaders=i,qd.setReaderDefaults(this,e)}async readAlignments(e,t,i){if(this.bamReaders.hasOwnProperty(e)){let n=this.bamReaders[e];return await n.readAlignments(e,t,i)}return new _d(e,t,i,this.config)}}const Yd=function(e,t){this.config=e,this.genome=t,qd.setReaderDefaults(this,e)};function Kd(){const e=this,t=this.genome;if(this.header)return Promise.resolve(this.header);{const i=this.config.url+"?file="+this.config.alignmentFile+"&options=-b,-H",n=Sa(this.config);return qd.readHeader(i,n,t).then((function(t){return e.header=t,t}))}}Yd.prototype.readAlignments=function(e,t,i){var n=this;return Kd.call(n).then((function(r){var s,o;return s=r.chrAliasTable.hasOwnProperty(e)?r.chrAliasTable[e]:e,o=n.config.url+"?reference="+n.config.referenceFile+"&file="+n.config.alignmentFile+"&region="+s+":"+t+"-"+i,ta.loadString(o,Sa(n.config)).then((function(o){var a;return r.chrToIndex[s],a=new _d(e,t,i,n.config),qd.decodeSamRecords(o,a,s,t,i,n.filter),a}))}))};class Jd extends Tc{constructor(e,t){super(e,t),qd.setReaderDefaults(this,e)}async readAlignments(e,t,i){if(!this.header){const e=Ao((await this.readHeaderData()).buffer);this.header=qd.decodeBamHeader(e,this.genome),this.chrAliasTable=new Map;for(let e of Object.keys(this.header.chrAliasTable))this.chrAliasTable.set(e,this.header.chrAliasTable[e])}let n=this.chrAliasTable.has(e)?this.chrAliasTable.get(e):e;const r=Ao((await this.readData(n,t,i)).buffer),s=this.header.chrToIndex[e],o=new _d(e,t,i,this.config);return qd.decodeBamRecords(r,this.header.size,o,this.header.chrNames,s,t,i),o.finish(),o}}
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For license information please see cram-bundle.js.LICENSE.txt */const eu=(()=>{var e={368:function(e,t,i){var n=this&&this.__awaiter||function(e,t,i,n){return new(i||(i=Promise))((function(r,s){function o(e){try{l(n.next(e))}catch(e){s(e)}}function a(e){try{l(n.throw(e))}catch(e){s(e)}}function l(e){var t;e.done?r(e.value):(t=e.value,t instanceof i?t:new i((function(e){e(t)}))).then(o,a)}l((n=n.apply(e,t||[])).next())}))},r=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const s=r(i(4105)),o=r(i(1269)),a=i(597),l=i(3427),h=i(8577);function c(e,t){if(t.some((e=>void 0===e)))throw new h.CramMalformedError("invalid .crai index file");const[i,n,r,s,o,a]=t;e[i]||(e[i]=[]),e[i].push({start:n,span:r,containerStart:s,sliceStart:o,sliceBytes:a})}t.default=class{constructor(e){this.filehandle=(0,l.open)(e.url,e.path,e.filehandle),this._parseCache=new s.default({cache:new 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t[0][e[0]>>6&3]="C",t[0][e[0]>>4&3]="G",t[0][e[0]>>2&3]="T",t[0][e[0]>>0&3]="N",t[1][e[1]>>6&3]="A",t[1][e[1]>>4&3]="G",t[1][e[1]>>2&3]="T",t[1][e[1]>>0&3]="N",t[2][e[2]>>6&3]="A",t[2][e[2]>>4&3]="C",t[2][e[2]>>2&3]="T",t[2][e[2]>>0&3]="N",t[3][e[3]>>6&3]="A",t[3][e[3]>>4&3]="C",t[3][e[3]>>2&3]="G",t[3][e[3]>>0&3]="N",t[4][e[4]>>6&3]="A",t[4][e[4]>>4&3]="C",t[4][e[4]>>2&3]="G",t[4][e[4]>>0&3]="T",t}(e.preservation.SM),this.dataSeriesEncoding=e.dataSeriesEncoding,this.tagEncoding=e.tagEncoding,this.preservation=e.preservation,this._size=e._size,this._endPosition=e._endPosition}getCodecForTag(e){if(!this.tagCodecCache[e]){const t=this.tagEncoding[e];t&&(this.tagCodecCache[e]=(0,n.instantiateCodec)(t,"byteArray"))}return this.tagCodecCache[e]}getTagNames(e){return this.tagIdsDictionary[e]}getCodecForDataSeries(e){let t=this.dataSeriesCodecCache[e];if(void 0===t){const i=this.dataSeriesEncoding[e];if(i){const o=s[e];if(!o)throw new r.CramMalformedError(`data series name ${e} not defined in 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e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const s=i(597),o=r(i(2779)),a=r(i(1269)),l=i(8577),h=r(i(9675)),c=i(6141),d=r(i(3498)),u=r(i(6284)),f=i(3427),p=i(9488),g=i(7578);class m{constructor(e){var t;if(this.file=(0,f.open)(e.url,e.path,e.filehandle),this.validateChecksums=!0,this.fetchReferenceSequenceCallback=e.seqFetch,this.options={checkSequenceMD5:e.checkSequenceMD5,cacheSize:null!==(t=e.cacheSize)&&void 0!==t?t:2e4},this.featureCache=new a.default({maxSize:this.options.cacheSize}),function(){const e=new Uint32Array([287454020]),t=new Uint8Array(e.buffer);return 68===t[0]?0:17===t[0]?1:2}()>0)throw new Error("Detected big-endian machine, may be unable to run")}read(e,t,i,n){return this.file.read(e,t,i,n)}stat(){return this.file.stat()}getDefinition(){return n(this,void 0,void 0,(function*(){const e=Buffer.allocUnsafe(c.cramFileDefinition.maxLength);yield this.file.read(e,0,c.cramFileDefinition.maxLength,0);const t=c.cramFileDefinition.parser.parse(e).result;if(2!==t.majorVersion&&3!==t.majorVersion)throw new l.CramUnimplementedError(`CRAM version ${t.majorVersion} not supported`);return t}))}getSamHeader(){return n(this,void 0,void 0,(function*(){const e=yield this.getContainerById(0);if(!e)throw new l.CramMalformedError("file contains no containers");const t=yield e.getFirstBlock();if(void 0===t)return(0,g.parseHeaderText)("");const i=t.content,n=i.readInt32LE(0),r=i.toString("utf8",4,4+n);return this.header=r,(0,g.parseHeaderText)(r)}))}getHeaderText(){return n(this,void 0,void 0,(function*(){return yield this.getSamHeader(),this.header}))}getSectionParsers(){return n(this,void 0,void 0,(function*(){const{majorVersion:e}=yield this.getDefinition();return(0,c.getSectionParsers)(e)}))}getContainerById(e){return n(this,void 0,void 0,(function*(){const t=yield this.getSectionParsers();let i=t.cramFileDefinition.maxLength;const{size:n}=yield this.file.stat(),{cramContainerHeader1:r}=t;let s;for(let t=0;t<=e;t+=1){if(i+r.maxLength+8>=n)return;s=this.getContainerAtPosition(i);const o=yield s.getHeader();if(!o)throw new l.CramMalformedError(`container ${e} not found in file`);if(0===t){i=o._endPosition;for(let e=0;e<o.numBlocks;e+=1){const e=yield this.readBlock(i);if(void 0===e)return;i=e._endPosition}}else i+=o._size+o.length}return s}))}checkCrc32(e,t,i,r){return n(this,void 0,void 0,(function*(){const n=Buffer.allocUnsafe(t);yield this.file.read(n,0,t,e);const s=o.default.unsigned(n);if(s!==i)throw new l.CramMalformedError(`crc mismatch in ${r}: recorded CRC32 = ${i}, but calculated CRC32 = ${s}`)}))}containerCount(){return n(this,void 0,void 0,(function*(){const e=yield this.getSectionParsers(),{size:t}=yield this.file.stat(),{cramContainerHeader1:i}=e;let n=0,r=e.cramFileDefinition.maxLength;for(;r+i.maxLength+8<t;){const e=yield this.getContainerAtPosition(r).getHeader();if(!e)break;if(0===n){r=e._endPosition;for(let t=0;t<e.numBlocks;t+=1){const e=yield 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n,r=bzip2.header(e),s=0;do{n=bzip2.decompress(e,r),-1!=n&&(Buffer.from(n).copy(i,s),s+=n.length,r-=n.length)}while(-1!=n)}else if("rans"===e)(0,h.default)(t,i);else if("rans4x16"===e)d.default.r4x16_uncompress(t,i);else if("arith"===e)d.default.arith_uncompress(t,i);else if("fqzcomp"===e)d.default.fqzcomp_uncompress(t,i);else{if("tok3"!==e)throw new l.CramUnimplementedError(`${e} decompression not yet implemented`);d.default.tok3_uncompress(t,i)}}readBlock(e){return n(this,void 0,void 0,(function*(){const{majorVersion:t}=yield this.getDefinition(),i=yield this.getSectionParsers(),n=yield this.readBlockHeader(e);if(void 0===n)return;const r=n._endPosition,s=Buffer.allocUnsafe(n.uncompressedSize),o=Object.assign(Object.assign({},n),{_endPosition:r,contentPosition:r,content:s});if("raw"!==n.compressionMethod){const e=Buffer.allocUnsafe(n.compressedSize);yield this.read(e,0,n.compressedSize,r),this._uncompress(n.compressionMethod,e,s)}else yield this.read(s,0,n.uncompressedSize,r);if(t>=3){const t=yield this._parseSection(i.cramBlockCrc32,r+n.compressedSize);if(void 0===t)return;o.crc32=t.crc32,this.validateChecksums&&(yield this.checkCrc32(e,n._size+n.compressedSize,t.crc32,"block data")),o._endPosition=t._endPosition,o._size=o.compressedSize+i.cramBlockCrc32.maxLength}else o._endPosition=r+o.compressedSize,o._size=o.compressedSize;return o}))}}t.default=m,"getDefinition getSectionParsers getSamHeader".split(" ").forEach((e=>(0,p.tinyMemoize)(m,e)))},8222:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.CramRecord=void 0;const r=n(i(5457));var s=i(8631);Object.defineProperty(t,"CramRecord",{enumerable:!0,get:function(){return n(s).default}}),t.default=r.default},8631:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.MateFlagsDecoder=t.CramFlagsDecoder=t.BamFlagsDecoder=t.MateFlags=t.CramFlags=t.BamFlags=void 0;const r=n(i(2615)),s={a:0,A:0,c:1,C:1,g:2,G:2,t:3,T:3,n:4,N:4};function o(e){const t={};for(const[i,n]of e)t["is"+n]=e=>!!(e&i),t["set"+n]=e=>e|i;return t}t.BamFlags=[[1,"Paired"],[2,"ProperlyPaired"],[4,"SegmentUnmapped"],[8,"MateUnmapped"],[16,"ReverseComplemented"],[32,"MateReverseComplemented"],[64,"Read1"],[128,"Read2"],[256,"Secondary"],[512,"FailedQc"],[1024,"Duplicate"],[2048,"Supplementary"]],t.CramFlags=[[1,"PreservingQualityScores"],[2,"Detached"],[4,"WithMateDownstream"],[8,"DecodeSequenceAsStar"]],t.MateFlags=[[1,"OnNegativeStrand"],[2,"Unmapped"]],t.BamFlagsDecoder=o(t.BamFlags),t.CramFlagsDecoder=o(t.CramFlags),t.MateFlagsDecoder=o(t.MateFlags),t.default=class{constructor({flags:e,cramFlags:t,readLength:i,mappingQuality:n,lengthOnRef:r,qualityScores:s,mateRecordNumber:o,readBases:a,readFeatures:l,mateToUse:h,readGroupId:c,readName:d,sequenceId:u,uniqueId:f,templateSize:p,alignmentStart:g,tags:m}){this.flags=e,this.cramFlags=t,this.readLength=i,this.mappingQuality=n,this.lengthOnRef=r,this.qualityScores=s,a&&(this.readBases=a),this.readGroupId=c,this.readName=d,this.sequenceId=u,this.uniqueId=f,this.templateSize=p,this.alignmentStart=g,this.tags=m,l&&(this.readFeatures=l),h&&(this.mate={flags:h.mateFlags,readName:h.mateReadName,sequenceId:h.mateSequenceId,alignmentStart:h.mateAlignmentStart}),o&&(this.mateRecordNumber=o)}isPaired(){return!!(this.flags&r.default.BAM_FPAIRED)}isProperlyPaired(){return!!(this.flags&r.default.BAM_FPROPER_PAIR)}isSegmentUnmapped(){return!!(this.flags&r.default.BAM_FUNMAP)}isMateUnmapped(){return!!(this.flags&r.default.BAM_FMUNMAP)}isReverseComplemented(){return!!(this.flags&r.default.BAM_FREVERSE)}isMateReverseComplemented(){return!!(this.flags&r.default.BAM_FMREVERSE)}isRead1(){return!!(this.flags&r.default.BAM_FREAD1)}isRead2(){return!!(this.flags&r.default.BAM_FREAD2)}isSecondary(){return!!(this.flags&r.default.BAM_FSECONDARY)}isFailedQc(){return!!(this.flags&r.default.BAM_FQCFAIL)}isDuplicate(){return!!(this.flags&r.default.BAM_FDUP)}isSupplementary(){return!!(this.flags&r.default.BAM_FSUPPLEMENTARY)}isDetached(){return!!(this.cramFlags&r.default.CRAM_FLAG_DETACHED)}hasMateDownStream(){return!!(this.cramFlags&r.default.CRAM_FLAG_MATE_DOWNSTREAM)}isPreservingQualityScores(){return!!(this.cramFlags&r.default.CRAM_FLAG_PRESERVE_QUAL_SCORES)}isUnknownBases(){return!!(this.cramFlags&r.default.CRAM_FLAG_NO_SEQ)}getReadBases(){if(!this.readBases&&this._refRegion){const e=function(e,t){if(!e.lengthOnRef&&!e.readLength)return null;if(e.isUnknownBases())return null;const i=e.alignmentStart-t.start;if(!e.readFeatures)return t.seq.substr(i,e.lengthOnRef).toUpperCase();let n="",r=i,s=0;for(;n.length<e.readLength;)if(s<e.readFeatures.length){const i=e.readFeatures[s];if("Q"===i.code||"q"===i.code)s+=1;else if(i.pos===n.length+1)if(s+=1,"b"===i.code){const e=i.data;n+=e,r+=e.length}else"B"===i.code?(n+=i.data[0],r+=1):"X"===i.code?(n+=i.sub,r+=1):"I"===i.code?n+=i.data:"D"===i.code?r+=i.data:"i"===i.code?n+=i.data:"N"===i.code?r+=i.data:"S"===i.code?n+=i.data:"P"===i.code||i.code;else if(s<e.readFeatures.length){const i=t.seq.substr(r,e.readFeatures[s].pos-n.length-1);n+=i,r+=i.length}}else{const i=t.seq.substr(r,e.readLength-n.length);n+=i,r+=i.length}return n.toUpperCase()}(this,this._refRegion);e&&(this.readBases=e)}return this.readBases}getPairOrientation(){if(!this.isSegmentUnmapped()&&this.isPaired()&&!this.isMateUnmapped()&&this.mate&&this.sequenceId===this.mate.sequenceId){const e=this.isReverseComplemented()?"R":"F",t=this.isMateReverseComplemented()?"R":"F";let i=" ",n=" ";this.isRead1()?(i="1",n="2"):this.isRead2()&&(i="2",n="1");const r=[];let s=this.templateLength||this.templateSize;if(void 0===s)throw new Error("One of templateSize and templateLength must be set");return this.alignmentStart>this.mate.alignmentStart&&s>0&&(s=-s),s>0?(r[0]=e,r[1]=i,r[2]=t,r[3]=n):(r[2]=e,r[3]=i,r[0]=t,r[1]=n),r.join("")}return null}addReferenceSequence(e,t){this.readFeatures&&this.readFeatures.forEach((i=>{"X"===i.code&&function(e,t,i,n){if(!t)return;const r=n.refPos-t.start,o=t.seq.charAt(r);o&&(n.ref=o);let a=s[o];void 0===a&&(a=4);const l=i.substitutionMatrix[a][n.data];l&&(n.sub=l)}(0,e,t,i)})),!this.readBases&&e.start<=this.alignmentStart&&e.end>=this.alignmentStart+(this.lengthOnRef||this.readLength)-1&&(this._refRegion=e)}toJSON(){const e={};return Object.keys(this).forEach((t=>{"_"!==t.charAt(0)&&(e[t]=this[t])})),e.readBases=this.getReadBases(),e}}},6141:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.getSectionParsers=t.cramFileDefinition=t.isMappedSliceHeader=void 0;const n=i(9996),r=(new n.Parser).itf8(),s={parser:(new n.Parser).string("magic",{length:4}).uint8("majorVersion").uint8("minorVersion").string("fileId",{length:20,stripNull:!0}),maxLength:26};t.cramFileDefinition=s;const o={parser:(new n.Parser).uint8("compressionMethod",{formatter:e=>{const t=["raw","gzip","bzip2","lzma","rans","rans4x16","arith","fqzcomp","tok3"][e];if(!t)throw new Error(`compression method number ${e} not implemented`);return t}}).uint8("contentType",{formatter:e=>{const t=["FILE_HEADER","COMPRESSION_HEADER","MAPPED_SLICE_HEADER","UNMAPPED_SLICE_HEADER","EXTERNAL_DATA","CORE_DATA"][e];if(!t)throw new Error(`invalid block content type id ${e}`);return t}}).itf8("contentId").itf8("compressedSize").itf8("uncompressedSize"),maxLength:17},a={parser:(new n.Parser).uint32("crc32"),maxLength:4},l=(new n.Parser).itf8("size").buffer("ents",{length:"size",formatter:e=>{function t(t,i){const n=e.toString("utf8",t,i),r=[];for(let e=0;e<n.length;e+=3)r.push(n.substr(e,3));return r}var i,n=[],r=0;for(i=0;i<e.length;i+=1)e[i]||(n.push(t(r,i)),r=i+1);return i>r&&n.push(t(r,i)),n}}),h=(new n.Parser).uint8(null,{formatter:e=>!!e}),c=(new n.Parser).itf8("mapSize").itf8("mapCount").array("ents",{length:"mapCount",type:(new n.Parser).string("key",{length:2,stripNull:!1}).choice("value",{tag:"key",choices:{MI:h,UI:h,PI:h,RN:h,AP:h,RR:h,SM:(new n.Parser).array(null,{type:"uint8",length:5}),TD:(new n.Parser).nest(null,{type:l,formatter:e=>e.ents})}})});function d(e){const t={};for(let i=0;i<e.ents.length;i+=1){const{key:n,value:r}=e.ents[i];t[n]&&console.warn(`duplicate key ${n} in map`),t[n]=r}return t}const u={cramFileDefinition:s,cramBlockHeader:o,cramBlockCrc32:a};t.isMappedSliceHeader=function(e){return"number"==typeof e.refSeqId};const f={cramUnmappedSliceHeader(e){let t=0,i=(new n.Parser).itf8("numRecords");return t+=5,e>=3?(i=i.ltf8("recordCounter"),t+=9):2===e&&(i=i.itf8("recordCounter"),t+=5),i=i.itf8("numBlocks").itf8("numContentIds").array("contentIds",{type:r,length:"numContentIds"}),t+=10,e>=2&&(i=i.array("md5",{type:"uint8",length:16}),t+=16),{parser:i,maxLength:e=>t+5*e}},cramMappedSliceHeader(e){let t=(new n.Parser).itf8("refSeqId").itf8("refSeqStart").itf8("refSeqSpan").itf8("numRecords"),i=20;return e>=3?(t=t.ltf8("recordCounter"),i+=9):2===e&&(t=t.itf8("recordCounter"),i+=5),t=t.itf8("numBlocks").itf8("numContentIds").array("contentIds",{type:r,length:"numContentIds"}).itf8("refBaseBlockId"),i+=15,e>=2&&(t=t.array("md5",{type:"uint8",length:16}),i+=16),{parser:t,maxLength:e=>i+5*e}},cramEncoding:e=>({parser:(new n.Parser).namely("cramEncoding").itf8("codecId").itf8("parametersBytes").choice("parameters",{tag:"codecId",choices:{0:new n.Parser,1:(new n.Parser).itf8("blockContentId"),2:(new n.Parser).itf8("offset").itf8("M"),3:n.Parser.start().itf8("numCodes").array("symbols",{length:"numCodes",type:r}).itf8("numLengths").array("bitLengths",{length:"numLengths",type:r}),4:n.Parser.start().nest("lengthsEncoding",{type:"cramEncoding"}).nest("valuesEncoding",{type:"cramEncoding"}),5:(new n.Parser).uint8("stopByte").itf8("blockContentId"),6:(new n.Parser).itf8("offset").itf8("length"),7:(new n.Parser).itf8("offset").itf8("K"),8:(new n.Parser).itf8("offset").itf8("log2m"),9:(new n.Parser).itf8("offset")}})}),cramDataSeriesEncodingMap(e){return(new n.Parser).itf8("mapSize").itf8("mapCount").array("ents",{length:"mapCount",type:(new n.Parser).string("key",{length:2,stripNull:!1}).nest("value",{type:this.cramEncoding(e).parser})})},cramTagEncodingMap(e){return(new n.Parser).itf8("mapSize").itf8("mapCount").array("ents",{length:"mapCount",type:(new n.Parser).itf8("key",{formatter:e=>String.fromCharCode(e>>16&255)+String.fromCharCode(e>>8&255)+String.fromCharCode(255&e)}).nest("value",{type:this.cramEncoding(e).parser})})},cramCompressionHeader(e){let t=new n.Parser;return t=t.nest("preservation",{type:c,formatter:d}).nest("dataSeriesEncoding",{type:this.cramDataSeriesEncodingMap(e),formatter:d}).nest("tagEncoding",{type:this.cramTagEncodingMap(e),formatter:d}),{parser:t}},cramContainerHeader1(e){let t=(new n.Parser).int32("length").itf8("refSeqId").itf8("refSeqStart").itf8("alignmentSpan").itf8("numRecords"),i=24;return e>=3?(t=t.ltf8("recordCounter"),i+=9):2===e&&(t=t.itf8("recordCounter"),i+=5),e>1&&(t=t.ltf8("numBases"),i+=9),t=t.itf8("numBlocks").itf8("numLandmarks"),i+=10,{parser:t,maxLength:i}},cramContainerHeader2(e){let t=(new n.Parser).itf8("numLandmarks").array("landmarks",{type:(new n.Parser).itf8(),length:"numLandmarks"}),i=0;return e>=3&&(t=t.uint32("crc32"),i=4),{parser:t,maxLength:e=>5+5*e+i}}};t.getSectionParsers=function(e){const t=Object.assign({},u);return Object.keys(f).forEach((i=>{t[i]=f[i](e)})),t}},3757:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const r=n(i(3720)),s=i(8577),o=i(8631),a=i(6141);function l(e){let t="";for(let i=0;i<e.length&&0!==e[i];i++)t+=String.fromCharCode(e[i]);return t}function h(e,t){if("Z"===e)return l(t);if("A"===e)return String.fromCharCode(t[0]);if("I"===e)return r.default.fromBytesLE(t).toNumber();if("i"===e)return new Int32Array(t.buffer)[0];if("s"===e)return new Int16Array(t.buffer)[0];if("S"===e)return new Uint16Array(t.buffer)[0];if("c"===e)return new Int8Array(t.buffer)[0];if("C"===e)return t[0];if("f"===e)return new Float32Array(t.buffer)[0];if("H"===e)return Number.parseInt(l(t).replace(/^0x/,""),16);if("B"===e)return function(e){const t=String.fromCharCode(e[0]),i=Int32Array.from(e.slice(1))[0],n=new Array(i);if(e=e.slice(5),"c"===t){const t=new Int8Array(e.buffer);for(let e=0;e<i;e+=1)n[e]=t[e]}else if("C"===t){const t=new Uint8Array(e.buffer);for(let e=0;e<i;e+=1)n[e]=t[e]}else if("s"===t){const t=new Int16Array(e.buffer);for(let e=0;e<i;e+=1)n[e]=t[e]}else if("S"===t){const t=new Uint16Array(e.buffer);for(let e=0;e<i;e+=1)n[e]=t[e]}else if("i"===t){const t=new Int32Array(e.buffer);for(let e=0;e<i;e+=1)n[e]=t[e]}else if("I"===t){const t=new Uint32Array(e.buffer);for(let e=0;e<i;e+=1)n[e]=t[e]}else{if("f"!==t)throw new Error("unknown type: "+t);{const t=new Float32Array(e.buffer);for(let e=0;e<i;e+=1)n[e]=t[e]}}return n}(t);throw new s.CramMalformedError(`Unrecognized tag type ${e}`)}t.default=function(e,t,i,n,r,c,d,u,f){let p=t("BF");const g=t("CF");if(!(0,a.isMappedSliceHeader)(n.parsedContent))throw new Error;let m;m=u>1&&-2===n.parsedContent.refSeqId?t("RI"):n.parsedContent.refSeqId;const b=t("RL");let w=t("AP");i.APdelta&&(w+=d.lastAlignmentStart),d.lastAlignmentStart=w;const v=t("RG");let y,_,x,k;if(i.readNamesIncluded&&(y=l(t("RN"))),o.CramFlagsDecoder.isDetached(g)){const e=t("MF");let n;i.readNamesIncluded||(n=l(t("RN")),y=n);const r=t("NS"),s=t("NP");(e||r>-1)&&(_={mateFlags:e,mateSequenceId:r,mateAlignmentStart:s,mateReadName:n}),x=t("TS"),o.MateFlagsDecoder.isUnmapped(e)&&(p=o.BamFlagsDecoder.setMateUnmapped(p)),o.MateFlagsDecoder.isOnNegativeStrand(e)&&(p=o.BamFlagsDecoder.setMateReverseComplemented(p))}else o.CramFlagsDecoder.isWithMateDownstream(g)&&(k=t("NF")+f+1);const C=t("TL");if(C<0)throw new s.CramMalformedError("invalid TL index");const S={},A=i.getTagNames(C),E=A.length;for(let t=0;t<E;t+=1){const n=A[t],o=n.substr(0,2),a=n.substr(2,1),l=i.getCodecForTag(n);if(!l)throw new s.CramMalformedError(`no codec defined for auxiliary tag ${n}`);const u=l.decode(e,r,c,d);S[o]=h(a,u)}let T,M,R,L,I;if(o.BamFlagsDecoder.isSegmentUnmapped(p))if(o.CramFlagsDecoder.isDecodeSequenceAsStar(g))I=null,L=null;else{const e=new Array(b);for(let i=0;i<e.length;i+=1)e[i]=t("BA");if(I=String.fromCharCode(...e),o.CramFlagsDecoder.isPreservingQualityScores(g)){L=new Array(b);for(let i=0;i<e.length;i+=1)L[i]=t("QS")}}else{const e=t("FN");if(e&&(T=function(e,t,i,n,r){let o=0,a=e-1;const l=new Array(t);function h([e,t]){const n=i(t);if("character"===e)return String.fromCharCode(n);if("string"===e){let e="";for(let t=0;t<n.byteLength;t++)e+=String.fromCharCode(n[t]);return e}return"numArray"===e?n.toArray():n}for(let e=0;e<t;e+=1){const t=String.fromCharCode(i("FC")),n=i("FP"),c={B:["character","BA"],S:["string",r>1?"SC":"IN"],X:["number","BS"],D:["number","DL"],I:["string","IN"],i:["character","BA"],b:["string","BB"],q:["numArray","QQ"],Q:["number","QS"],H:["number","HC"],P:["number","PD"],N:["number","RS"]}[t];if(!c)throw new s.CramMalformedError(`invalid read feature code "${t}"`);let d=h(c);const u={B:["number","QS"]}[t];u&&(d=[d,h(u)]),o+=n;const f=o;a+=n;const p=a;"D"===t||"N"===t?a+=d:"I"===t||"S"===t?a-=d.length:"i"===t&&(a-=1),l[e]={code:t,pos:f,refPos:p,data:d}}return l}(w,e,t,0,u)),M=b,T)for(const{code:e,data:t}of T)"D"===e||"N"===e?M+=t:"I"===e||"S"===e?M-=t.length:"i"===e&&(M-=1);if(Number.isNaN(M)&&(console.warn(`${y||`${m}:${w}`} record has invalid read features`),M=b),R=t("MQ"),o.CramFlagsDecoder.isPreservingQualityScores(g)){L=new Array(b);for(let e=0;e<L.length;e++)L[e]=t("QS")}}return{readLength:b,sequenceId:m,cramFlags:g,flags:p,alignmentStart:w,readGroupId:v,readName:y,mateToUse:_,templateSize:x,mateRecordNumber:k,readFeatures:T,lengthOnRef:M,mappingQuality:R,qualityScores:L,readBases:I,tags:S}}},6601:function(e,t,i){var n=this&&this.__awaiter||function(e,t,i,n){return new(i||(i=Promise))((function(r,s){function o(e){try{l(n.next(e))}catch(e){s(e)}}function a(e){try{l(n.throw(e))}catch(e){s(e)}}function l(e){var t;e.done?r(e.value):(t=e.value,t instanceof i?t:new i((function(e){e(t)}))).then(o,a)}l((n=n.apply(e,t||[])).next())}))},r=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const s=i(8577),o=i(9488),a=r(i(2615)),l=r(i(3757)),h=r(i(8631)),c=i(6141),d=i(1074);function u(e,t,i,n){if(!n)throw new s.CramMalformedError("could not resolve intra-slice mate pairs, file seems truncated or malformed");const r=!!(n.mate||void 0!==n.mateRecordNumber&&n.mateRecordNumber!==t);i.readName||(i.readName=String(i.uniqueId),n.readName=i.readName),i.mate={sequenceId:n.sequenceId,alignmentStart:n.alignmentStart,uniqueId:n.uniqueId},n.readName&&(i.mate.readName=n.readName),n.mate||void 0!==n.mateRecordNumber||(n.mate={sequenceId:i.sequenceId,alignmentStart:i.alignmentStart,uniqueId:i.uniqueId},i.readName&&(n.mate.readName=i.readName)),i.flags|=a.default.BAM_FPAIRED,n.flags&a.default.BAM_FUNMAP&&(i.flags|=a.default.BAM_FMUNMAP),i.flags&a.default.BAM_FUNMAP&&(n.flags|=a.default.BAM_FMUNMAP),n.flags&a.default.BAM_FREVERSE&&(i.flags|=a.default.BAM_FMREVERSE),i.flags&a.default.BAM_FREVERSE&&(n.flags|=a.default.BAM_FMREVERSE),void 0===i.templateLength&&(r?function(e,t,i){const n=function t(i){const n=[i];if(void 0!==i.mateRecordNumber&&i.mateRecordNumber>=0){const r=e[i.mateRecordNumber];if(!r)throw new s.CramMalformedError("intra-slice mate record not found, this file seems malformed");n.push(...t(r))}return n}(i),r=n.map((e=>e.alignmentStart)),o=n.map((e=>e.alignmentStart+e.readLength-1)),a=Math.max(...o)-Math.min(...r)+1;a>=0&&n.forEach((e=>{if(void 0!==e.templateLength)throw new s.CramMalformedError("mate pair group has some members that have template lengths already, this file seems malformed");e.templateLength=a}))}(e,0,i):function(e,t){const i=Math.min(e.alignmentStart,t.alignmentStart),n=Math.max(e.alignmentStart+e.readLength-1,t.alignmentStart+t.readLength-1)-i+1;e.templateLength=n,t.templateLength=n}(i,n)),delete i.mateRecordNumber}class f{constructor(e,t,i){this.container=e,this.containerPosition=t,this.file=e.file}getHeader(){return n(this,void 0,void 0,(function*(){const e=yield this.file.getSectionParsers(),t=yield this.container.getHeader(),i=yield this.file.readBlock(t._endPosition+this.containerPosition);if(void 0===i)throw new Error;if("MAPPED_SLICE_HEADER"===i.contentType){const n=(0,o.parseItem)(i.content,e.cramMappedSliceHeader.parser,0,t._endPosition);return Object.assign(Object.assign({},i),{parsedContent:n})}if("UNMAPPED_SLICE_HEADER"===i.contentType){const n=(0,o.parseItem)(i.content,e.cramUnmappedSliceHeader.parser,0,t._endPosition);return Object.assign(Object.assign({},i),{parsedContent:n})}throw new s.CramMalformedError(`error reading slice header block, invalid content type ${i.contentType}`)}))}getBlocks(){return n(this,void 0,void 0,(function*(){const e=yield this.getHeader();let t=e._endPosition;const i=new Array(e.parsedContent.numBlocks);for(let e=0;e<i.length;e+=1){const n=yield this.file.readBlock(t);if(void 0===n)throw new Error;i[e]=n,t=i[e]._endPosition}return i}))}getCoreDataBlock(){return n(this,void 0,void 0,(function*(){return(yield this.getBlocks())[0]}))}_getBlocksContentIdIndex(){return n(this,void 0,void 0,(function*(){const e=yield this.getBlocks(),t={};return e.forEach((e=>{"EXTERNAL_DATA"===e.contentType&&(t[e.contentId]=e)})),t}))}getBlockByContentId(e){return n(this,void 0,void 0,(function*(){return(yield this._getBlocksContentIdIndex())[e]}))}getReferenceRegion(){return n(this,void 0,void 0,(function*(){const e=(yield this.getHeader()).parsedContent;if(!(0,c.isMappedSliceHeader)(e))throw new Error;if(e.refSeqId<0)return;const t=yield this.container.getCompressionScheme();if(void 0===t)throw new Error;if(e.refBaseBlockId>=0){const t=yield this.getBlockByContentId(e.refBaseBlockId);if(!t)throw new s.CramMalformedError("embedded reference specified, but reference block does not exist");return{seq:t.data.toString("utf8"),start:e.refSeqStart,end:e.refSeqStart+e.refSeqSpan-1,span:e.refSeqSpan}}if(t.referenceRequired||this.file.fetchReferenceSequenceCallback){if(!this.file.fetchReferenceSequenceCallback)throw new Error("reference sequence not embedded, and seqFetch callback not provided, cannot fetch reference sequence");const t=yield this.file.fetchReferenceSequenceCallback(e.refSeqId,e.refSeqStart,e.refSeqStart+e.refSeqSpan-1);if(t.length!==e.refSeqSpan)throw new s.CramArgumentError("seqFetch callback returned a reference sequence of the wrong length");return{seq:t,start:e.refSeqStart,end:e.refSeqStart+e.refSeqSpan-1,span:e.refSeqSpan}}}))}getAllRecords(){return this.getRecords((()=>!0))}_fetchRecords(){return n(this,void 0,void 0,(function*(){const{majorVersion:e}=yield this.file.getDefinition(),t=yield this.container.getCompressionScheme();if(void 0===t)throw new Error;const i=yield this.getHeader();if(void 0===i)throw new Error;const n=yield this._getBlocksContentIdIndex();if(e>1&&this.file.options.checkSequenceMD5&&(0,c.isMappedSliceHeader)(i.parsedContent)&&i.parsedContent.refSeqId>=0&&"0000000000000000"!==i.parsedContent.md5.join("")){const e=yield this.getReferenceRegion();if(e){const{seq:t,start:n,end:r}=e,a=(0,o.sequenceMD5)(t),l=i.parsedContent.md5.map((e=>(e<16?"0":"")+e.toString(16))).join("");if(a!==l)throw new s.CramMalformedError(`MD5 checksum reference mismatch for ref ${i.parsedContent.refSeqId} pos ${n}..${r}. recorded MD5: ${l}, calculated MD5: ${a}`)}}const r=yield this.getCoreDataBlock(),a={lastAlignmentStart:(0,c.isMappedSliceHeader)(i.parsedContent)?i.parsedContent.refSeqStart:0,coreBlock:{bitPosition:7,bytePosition:0},externalBlocks:{map:new Map,getCursor(e){let t=this.map.get(e);return void 0===t&&(t={bitPosition:7,bytePosition:0},this.map.set(e,t)),t}}},f=e=>{const i=t.getCodecForDataSeries(e);if(!i)throw new s.CramMalformedError(`no codec defined for ${e} data series`);return i.decode(this,r,n,a)};let p=new Array(i.parsedContent.numRecords);for(let s=0;s<p.length;s+=1)try{const o=(0,l.default)(this,f,t,i,r,n,a,e,s);p[s]=new h.default(Object.assign(Object.assign({},o),{uniqueId:i.contentPosition+i.parsedContent.recordCounter+s+1}))}catch(e){if(e instanceof d.CramBufferOverrunError){console.warn("read attempted beyond end of buffer, file seems truncated."),p=p.filter((e=>!!e));break}throw e}for(let e=0;e<p.length;e+=1){const{mateRecordNumber:t}=p[e];void 0!==t&&t>=0&&u(p,e,p[e],p[t])}return p}))}getRecords(e){return n(this,void 0,void 0,(function*(){const t=this.container.filePosition+this.containerPosition;let i=this.file.featureCache.get(t.toString());i||(i=this._fetchRecords(),this.file.featureCache.set(t.toString(),i));const r=(yield i).filter(e);if(r.length&&this.file.fetchReferenceSequenceCallback){const e=yield this.getHeader();if((0,c.isMappedSliceHeader)(e.parsedContent)&&(e.parsedContent.refSeqId>=0||-2===e.parsedContent.refSeqId)){const t=e.parsedContent.refSeqId>=0?e.parsedContent.refSeqId:void 0,i=yield this.container.getCompressionScheme();if(void 0===i)throw new Error;const s={};for(let e=0;e<r.length;e+=1){const i=void 0!==t?t:r[e].sequenceId;let n=s[i];n||(n={id:i,start:r[e].alignmentStart,end:-1/0,seq:null},s[i]=n);const o=r[e].alignmentStart+(r[e].lengthOnRef||r[e].readLength)-1;o>n.end&&(n.end=o),r[e].alignmentStart<n.start&&(n.start=r[e].alignmentStart)}yield Promise.all(Object.values(s).map((e=>n(this,void 0,void 0,(function*(){-1!==e.id&&e.start<=e.end&&(e.seq=yield this.file.fetchReferenceSequenceCallback(e.id,e.start,e.end))})))));for(let e=0;e<r.length;e+=1){const n=s[void 0!==t?t:r[e].sequenceId];if(n&&n.seq){const t=n.seq;r[e].addReferenceSequence(Object.assign(Object.assign({},n),{seq:t}),i)}}}}return r}))}}t.default=f,"getHeader getBlocks _getBlocksContentIdIndex".split(" ").forEach((e=>(0,o.tinyMemoize)(f,e)))},9488:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.sequenceMD5=t.tinyMemoize=t.parseItem=t.parseItf8=t.itf8Size=void 0;const r=n(i(2568)),s=i(1074);t.itf8Size=function(e){return-128&e?-16384&e?-2097152&e?-268435456&e?5:4:3:2:1},t.parseItf8=function(e,t){let i=t;const n=e[i];let r;if(n<128?(r=n,i+=1):n<192?(r=16383&(n<<8|e[i+1]),i+=2):n<224?(r=2097151&(n<<16|e[i+1]<<8|e[i+2]),i+=3):n<240?(r=268435455&(n<<24|e[i+1]<<16|e[i+2]<<8|e[i+3]),i+=4):(r=(15&n)<<28|e[i+1]<<20|e[i+2]<<12|e[i+3]<<4|15&e[i+4],i+=5),i>e.length)throw new s.CramBufferOverrunError("Attempted to read beyond end of buffer; this file seems truncated.");return[r,i-t]},t.parseItem=function(e,t,i=0,n=0){const{offset:r,result:s}=t.parse(e);return Object.assign(Object.assign({},s),{_endPosition:r+n,_size:r-i})},t.tinyMemoize=function(e,t){const i=e.prototype[t],n=`_memo_${t}`;e.prototype[t]=function(){if(!(n in this)){const e=i.call(this);this[n]=e,Promise.resolve(e).catch((()=>{delete this[n]}))}return this[n]}},t.sequenceMD5=function(e){return(0,r.default)(e.toUpperCase().replace(/[^\x21-\x7e]/g,""))}},8577:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.CramArgumentError=t.CramSizeLimitError=t.CramMalformedError=t.CramUnimplementedError=t.CramError=void 0;class i extends Error{}t.CramError=i;class n extends Error{}t.CramUnimplementedError=n,t.CramMalformedError=class extends i{},t.CramSizeLimitError=class extends i{},t.CramArgumentError=class extends i{}},5590:function(e,t,i){var n=this&&this.__createBinding||(Object.create?function(e,t,i,n){void 0===n&&(n=i);var r=Object.getOwnPropertyDescriptor(t,i);r&&!("get"in r?!t.__esModule:r.writable||r.configurable)||(r={enumerable:!0,get:function(){return t[i]}}),Object.defineProperty(e,n,r)}:function(e,t,i,n){void 0===n&&(n=i),e[n]=t[i]}),r=this&&this.__setModuleDefault||(Object.create?function(e,t){Object.defineProperty(e,"default",{enumerable:!0,value:t})}:function(e,t){e.default=t}),s=this&&this.__importStar||function(e){if(e&&e.__esModule)return e;var t={};if(null!=e)for(var i in e)"default"!==i&&Object.prototype.hasOwnProperty.call(e,i)&&n(t,e,i);return r(t,e),t},o=this&&this.__importDefault||function(e){return 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this.next&&(e=this.next.generate(e)),e},Object.keys(l).forEach((function(e){f.prototype["generate".concat(e)]=function(t){"UInt64"===e?t.pushCode("{0} = Long.fromBytes(buffer.slice(offset,offset+8), true, this.endian === 'le').toNumber();",t.generateVariable(this.varName),e):"Int64"===e?t.pushCode("{0} = Long.fromBytes(buffer.slice(offset,offset+8), false, this.endian === 'le').toNumber();",t.generateVariable(this.varName),e):t.pushCode("{0} = buffer.read{1}(offset);",t.generateVariable(this.varName),e),t.pushCode("offset += {0};",l[e])}})),f.prototype.generateBit=function(e){var t=JSON.parse(JSON.stringify(this));if(t.varName=e.generateVariable(t.varName),e.bitFields.push(t),!this.next||this.next&&["Bit","Nest"].indexOf(this.next.type)<0){var i=0;e.bitFields.forEach((function(e){i+=e.options.length}));var n=e.generateTmpVariable();if(i<=8)e.pushCode("var {0} = buffer.readUInt8(offset);",n),i=8;else if(i<=16)e.pushCode("var {0} = buffer.readUInt16BE(offset);",n),i=16;else if(i<=24){var r=e.generateTmpVariable(),s=e.generateTmpVariable();e.pushCode("var {0} = buffer.readUInt16BE(offset);",r),e.pushCode("var {0} = buffer.readUInt8(offset + 2);",s),e.pushCode("var {2} = ({0} << 8) | {1};",r,s,n),i=24}else{if(!(i<=32))throw new Error("Currently, bit field sequence longer than 4-bytes is not supported.");e.pushCode("var {0} = buffer.readUInt32BE(offset);",n),i=32}e.pushCode("offset += {0};",i/8);var o=0,a="be"===this.endian;e.bitFields.forEach((function(t){e.pushCode("{0} = {1} >> {2} & {3};",t.varName,n,a?i-o-t.options.length:o,(1<<t.options.length)-1),o+=t.options.length})),e.bitFields=[]}},f.prototype.generateSkip=function(e){var t=e.generateOption(this.options.length);e.pushCode("offset += {0};",t)},f.prototype.generateString=function(e){var t=e.generateVariable(this.varName),i=e.generateTmpVariable();this.options.length&&this.options.zeroTerminated?(e.pushCode("var {0} = offset;",i),e.pushCode("while(buffer.readUInt8(offset++) !== 0 && offset - {0}  < {1});",i,this.options.length),e.pushCode("{0} = buffer.toString('{1}', {2}, offset - {2} < {3} ? offset - 1 : offset);",t,this.options.encoding,i,this.options.length)):this.options.length?(e.pushCode("{0} = buffer.toString('{1}', offset, offset + {2});",t,this.options.encoding,e.generateOption(this.options.length)),e.pushCode("offset += {0};",e.generateOption(this.options.length))):this.options.zeroTerminated?(e.pushCode("var {0} = offset;",i),e.pushCode("while(buffer.readUInt8(offset++) !== 0);"),e.pushCode("{0} = buffer.toString('{1}', {2}, offset - 1);",t,this.options.encoding,i)):this.options.greedy&&(e.pushCode("var {0} = offset;",i),e.pushCode("while(buffer.length > offset++);"),e.pushCode("{0} = buffer.toString('{1}', {2}, offset);",t,this.options.encoding,i)),this.options.stripNull&&e.pushCode("{0} = {0}.replace(/\\x00+$/g, '')",t)},f.prototype.generateBuffer=function(e){"eof"===this.options.readUntil?e.pushCode("{0} = buffer.slice(offset);",e.generateVariable(this.varName)):(e.pushCode("{0} = buffer.slice(offset, offset + {1});",e.generateVariable(this.varName),e.generateOption(this.options.length)),e.pushCode("offset += {0};",e.generateOption(this.options.length))),this.options.clone&&e.pushCode("{0} = Buffer.from({0});",e.generateVariable(this.varName))},f.prototype.generateArray=function(e){var t=e.generateOption(this.options.length),i=e.generateOption(this.options.lengthInBytes),n=this.options.type,r=e.generateTmpVariable(),s=e.generateVariable(this.varName),o=e.generateTmpVariable(),a=this.options.key,d="string"==typeof a;if(d?e.pushCode("{0} = {};",s):e.pushCode("{0} = [];",s),"function"==typeof this.options.readUntil?e.pushCode("do {"):"eof"===this.options.readUntil?e.pushCode("for (var {0} = 0; offset < buffer.length; {0}++) {",r):void 0!==i?e.pushCode("for (var {0} = offset; offset - {0} < {1}; ) {",r,i):e.pushCode("for (var {0} = 0; {0} < {1}; {0}++) {",r,t),"string"==typeof n)if(h[n]){var p=e.generateTmpVariable();e.pushCode("var {0} = {1}(offset);",p,c+n),e.pushCode("var {0} = {1}.result; offset = {1}.offset;",o,p),n!==this.alias&&e.addReference(n)}else e.pushCode("var {0} = buffer.read{1}(offset);",o,u[n]),e.pushCode("offset += {0};",l[u[n]]);else n instanceof f&&(e.pushCode("var {0} = {};",o),e.pushScope(o),n.generate(e),e.popScope());d?e.pushCode("{0}[{2}.{1}] = {2};",s,a,o):e.pushCode("{0}.push({1});",s,o),e.pushCode("}"),"function"==typeof this.options.readUntil&&e.pushCode(" while (!({0}).call(this, {1}, buffer.slice(offset)));",this.options.readUntil,o)},f.prototype.generateChoiceCase=function(e,t,i){if("string"==typeof i)if(h[i]){var n=e.generateTmpVariable();e.pushCode("var {0} = {1}(offset);",n,c+i),e.pushCode("{0} = {1}.result; offset = {1}.offset;",e.generateVariable(this.varName),n),i!==this.alias&&e.addReference(i)}else e.pushCode("{0} = buffer.read{1}(offset);",e.generateVariable(this.varName),u[i]),e.pushCode("offset += {0};",l[u[i]]);else i instanceof f&&(e.pushPath(t),i.generate(e),e.popPath(t))},f.prototype.generateChoice=function(e){var t=e.generateOption(this.options.tag);this.varName&&e.pushCode("{0} = {};",e.generateVariable(this.varName)),e.pushCode("switch({0}) {",t),Object.keys(this.options.choices).forEach((function(t){var i=this.options.choices[t];Number.isNaN(parseInt(t,10))?e.pushCode("case '{0}':",t):e.pushCode("case {0}:",t),this.generateChoiceCase(e,this.varName,i),e.pushCode("break;")}),this),e.pushCode("default:"),this.options.defaultChoice?this.generateChoiceCase(e,this.varName,this.options.defaultChoice):e.generateError('"Met undefined tag value " + {0} + " at choice"',t),e.pushCode("}")},f.prototype.generateNest=function(e){var t=e.generateVariable(this.varName);if(this.options.type instanceof f)this.varName&&e.pushCode("{0} = {};",t),e.pushPath(this.varName),this.options.type.generate(e),e.popPath(this.varName);else if(h[this.options.type]){var i=e.generateTmpVariable();e.pushCode("var {0} = {1}(offset);",i,c+this.options.type),e.pushCode("{0} = {1}.result; offset = {1}.offset;",t,i),this.options.type!==this.alias&&e.addReference(this.options.type)}},f.prototype.generateFormatter=function(e,t,i){"function"==typeof i&&e.pushCode("{0} = ({1}).call(this, {0});",t,i)},f.prototype.isInteger=function(){return!!this.type.match(/U?Int[8|16|32][BE|LE]?|Bit\d+/)},f.prototype.itf8=function(e,t){return this.setNextParser("itf8",e,t)},f.prototype.itf8=function(e,t){return this.setNextParser("itf8",e,t)},f.prototype.generateItf8=function(e){var t=e.generateVariable(this.varName),i=e.generateTmpVariable();e.pushCode("\n    var ".concat(i," = buffer[offset];\n    if (").concat(i," < 0x80) {\n      ").concat(t," = ").concat(i,";\n      offset += 1;\n    } else if (").concat(i," < 0xc0) {\n      ").concat(t," = ((").concat(i,"<<8) | buffer[offset+1]) & 0x3fff;\n      offset += 2;\n    } else if (").concat(i," < 0xe0) {\n      ").concat(t," = ((").concat(i,"<<16) | (buffer[offset+1]<< 8) |  buffer[offset+2]) & 0x1fffff;\n      offset += 3;\n    } else if (").concat(i," < 0xf0) {\n      ").concat(t," = ((").concat(i,"<<24) | (buffer[offset+1]<<16) | (buffer[offset+2]<<8) | buffer[offset+3]) & 0x0fffffff;\n      offset += 4\n    } else {\n      ").concat(t," = ((").concat(i," & 0x0f)<<28) | (buffer[offset+1]<<20) | (buffer[offset+2]<<12) | (buffer[offset+3]<<4) | (buffer[offset+4] & 0x0f);\n      // x=((0xff & 0x0f)<<28) | (0xff<<20) | (0xff<<12) | (0xff<<4) | (0x0f & 0x0f);\n      // TODO *val_p = uv < 0x80000000UL ? uv : -((int32_t) (0xffffffffUL - uv)) - 1;\n      offset += 5\n    }\n  "))},f.prototype.ltf8=function(e,t){return this.setNextParser("ltf8",e,t)},f.prototype.generateLtf8=function(e){var t=e.generateVariable(this.varName),i=e.generateTmpVariable();e.pushCode("\n  var ".concat(i," = buffer[offset];\n  if (").concat(i," < 0x80) {\n    ").concat(t," = ").concat(i,";\n    offset += 1;\n  } else if (").concat(i," < 0xc0) {\n    ").concat(t," = ((buffer[offset]<<8) | buffer[offset+1]) & 0x3fff;\n    offset += 2;\n  } else if (").concat(i," < 0xe0) {\n    ").concat(t," = ((buffer[offset]<<16) | (buffer[offset+1]<<8) | buffer[offset+2]) & 0x1fffff;\n    ").concat(t," = (((").concat(i," & 63) << 16) | buffer.readUInt16LE(offset + 1));\n    offset += 3;\n  } else if (").concat(i," < 0xf0) {\n    ").concat(t," = ((buffer[offset]<<24) | (buffer[offset+1]<<16) | (buffer[offset+2]<<8) | buffer[offset+3]) & 0x0fffffff;\n    offset += 4;\n  } else if (").concat(i," < 0xf8) {\n    ").concat(t," = (((buffer[offset] & 15) * Math.pow(2,32))) +\n      (buffer[offset+1]<<24) | (buffer[offset+2]<<16 | buffer[offset+3]<<8 | buffer[offset+4])\n    // TODO *val_p = uv < 0x80000000UL ? uv : -((int32_t) (0xffffffffUL - uv)) - 1;\n    offset += 5;\n  } else if (").concat(i," < 0xfc) {\n    ").concat(t," = ((((buffer[offset] & 7) << 8) | buffer[offset+1] )) * Math.pow(2,32) +\n      (buffer[offset+2]<<24) | (buffer[offset+3]<<16 | buffer[offset+4]<<8 | buffer[offset+5])\n    offset += 6;\n  } else if (").concat(i," < 0xfe) {\n    ").concat(t," = ((((buffer[offset] & 3) << 16) | buffer[offset+1]<<8 | buffer[offset+2])) * Math.pow(2,32) +\n      (buffer[offset+3]<<24) | (buffer[offset+4]<<16 | buffer[offset+5]<<8 | buffer[offset+6])\n    offset += 7;\n  } else if (").concat(i," < 0xff) {\n    ").concat(t," = Long.fromBytesBE(buffer.slice(offset+1,offset+8));\n    if (").concat(t,".greaterThan(Number.MAX_SAFE_INTEGER) || ").concat(t,".lessThan(Number.MIN_SAFE_INTEGER))\n      throw new Error('integer overflow')\n    ").concat(t," = ").concat(t,".toNumber()\n    offset += 8;\n  } else {\n    ").concat(t," = Long.fromBytesBE(buffer.slice(offset+1,offset+9));\n    if (").concat(t,".greaterThan(Number.MAX_SAFE_INTEGER) || ").concat(t,".lessThan(Number.MIN_SAFE_INTEGER))\n      throw new Error('integer overflow')\n    ").concat(t," = ").concat(t,".toNumber()\n    offset += 9;\n  }\n  "))},t.Parser=f},2961:(e,t)=>{function i(e){return i="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e},i(e)}var n=function(){this.code="",this.scopes=[["vars"]],this.isAsync=!1,this.bitFields=[],this.tmpVariableCount=0,this.references={}};n.prototype.generateVariable=function(e){var t=[];for(Array.prototype.push.apply(t,this.scopes[this.scopes.length-1]);/^\$parent\./.test(e);)t.pop(),e=e.replace(/^\$parent\./,"");return e&&t.push(e),t.join(".")},n.prototype.generateOption=function(e){switch(i(e)){case"number":return e.toString();case"string":return this.generateVariable(e);case"function":return"(".concat(e,").call(").concat(this.generateVariable(),", vars)");default:return}},n.prototype.generateError=function(){var e=Array.prototype.slice.call(arguments),t=n.interpolate.apply(this,e);this.isAsync?this.pushCode("return process.nextTick(function() { callback(new Error(".concat(t,"), vars); });")):this.pushCode("throw new Error(".concat(t,");"))},n.prototype.generateTmpVariable=function(){return"$tmp".concat(this.tmpVariableCount++)},n.prototype.pushCode=function(){var e=Array.prototype.slice.call(arguments);this.code+="".concat(n.interpolate.apply(this,e),"\n")},n.prototype.pushPath=function(e){e&&this.scopes[this.scopes.length-1].push(e)},n.prototype.popPath=function(e){e&&this.scopes[this.scopes.length-1].pop()},n.prototype.pushScope=function(e){this.scopes.push([e])},n.prototype.popScope=function(){this.scopes.pop()},n.prototype.addReference=function(e){this.references[e]||(this.references[e]={resolved:!1,requested:!1})},n.prototype.markResolved=function(e){this.references[e].resolved=!0},n.prototype.markRequested=function(e){e.forEach(function(e){this.references[e].requested=!0}.bind(this))},n.prototype.getUnresolvedReferences=function(){var e=this.references;return Object.keys(this.references).filter((function(t){return!e[t].resolved&&!e[t].requested}))},n.interpolate=function(e){var t=e.match(/{\d+}/g),i=Array.prototype.slice.call(arguments,1);return t&&t.forEach((function(t){var n=parseInt(t.substr(1,t.length-2),10);e=e.replace(t,i[n].toString())})),e},t._=n},22:e=>{e.exports.runInThisContext=function(e){return new Function("code","return eval(code);").call(globalThis,e)}},445:(e,t,i)=>{const n=i(7381),r=i(9260),s=i(576),o=i(4693),a=128;e.exports=class{decode(e){return this.stream=new r(e),this.decodeStream(this.stream)}decodeStream(e,t=0){var i=this.stream.ReadByte();16&i||(t=this.stream.ReadUint7());var n,r=t,s=1&i;if(8&i)return this.decodeStripe(this.stream,t);if(i&a&&([n,r]=this.decodePackMeta(this.stream)),32&i)var o=this.decodeCat(this.stream,r);else o=4&i?this.decodeExt(this.stream,r):64&i?s?this.decodeRLE1(this.stream,r):this.decodeRLE0(this.stream,r):s?this.decode1(this.stream,r):this.decode0(this.stream,r);return i&a&&(o=this.decodePack(o,n,t)),o}encode(e,t){if(this.stream=new r("",0,1.1*e.length+100),this.stream.WriteByte(t),16&t||this.stream.WriteUint7(e.length),8&t)return Buffer.concat([this.stream.buf.slice(0,this.stream.pos),this.encodeStripe(this.stream,e,t>>8)]);var i,n=1&t,s=e.length;return t&a&&([i,e,s]=this.encodePack(e)),t&a&&this.stream.WriteStream(i),64&t?n?this.encodeRLE1(e,s,this.stream):this.encodeRLE0(e,s,this.stream):n?this.encode1(e,s,this.stream):this.encode0(e,s,this.stream)}decode0(e,t){var i=new Buffer.allocUnsafe(t),r=e.ReadByte();0==r&&(r=256);var o=new s(r),a=new n(e);a.RangeStartDecode(e);for(var l=0;l<t;l++)i[l]=o.ModelDecode(e,a);return i}encode0(e,t,i){for(var r=0,o=0;o<t;o++)r<e[o]&&(r=e[o]);r++;var a=new s(r);i.WriteByte(r);var l=new n(i);for(o=0;o<t;o++)a.ModelEncode(i,l,e[o]);return l.RangeFinishEncode(i),i.buf.slice(0,i.pos)}decode1(e,t){var i=new Buffer.allocUnsafe(t),r=e.ReadByte();0==r&&(r=256);for(var o=new Array(r),a=0;a<r;a++)o[a]=new s(r);var l=new 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Array(258);for(o=0;o<=257;o++)l[o]=new s(4);i.WriteByte(r);var h=new n(i);for(o=0;o<t;){a.ModelEncode(i,h,e[o]);for(var c=1;o+c<t&&e[o+c]==e[o];)c++;c--;var d=e[o];e[o],o+=c+1;var u=c>=3?3:c;for(l[d].ModelEncode(i,h,u),c-=u,d=256;3==u;)u=c>=3?3:c,l[d].ModelEncode(i,h,u),d=257,c-=u}return h.RangeFinishEncode(i),i.buf.slice(0,i.pos)}decodeRLE1(e,t){var i=new Buffer.allocUnsafe(t),r=e.ReadByte();0==r&&(r=256);for(var o=new Array(r),a=0;a<r;a++)o[a]=new s(r);var l=new Array(258);for(a=0;a<=257;a++)l[a]=new s(4);var h=new n(e);h.RangeStartDecode(e);var c=0;for(a=0;a<t;){i[a]=o[c].ModelDecode(e,h),c=i[a];for(var d=l[i[a]].ModelDecode(e,h),u=d,f=256;3==d;)d=l[f].ModelDecode(e,h),f=257,u+=d;for(var p=1;p<=u;p++)i[a+p]=i[a];a+=u+1}return i}encodeRLE1(e,t,i){for(var r=0,o=0;o<t;o++)r<e[o]&&(r=e[o]);r++;var a=new Array(r);for(o=0;o<r;o++)a[o]=new s(r);var l=new Array(258);for(o=0;o<=257;o++)l[o]=new s(4);i.WriteByte(r);for(var h=new n(i),c=(o=0,0);o<t;){a[c].ModelEncode(i,h,e[o]);for(var d=1;o+d<t&&e[o+d]==e[o];)d++;d--;var u=e[o];c=e[o],o+=d+1;var f=d>=3?3:d;for(l[u].ModelEncode(i,h,f),d-=f,u=256;3==f;)f=d>=3?3:d,l[u].ModelEncode(i,h,f),u=257,d-=f}return h.RangeFinishEncode(i),i.buf.slice(0,i.pos)}decodePackMeta(e){this.nsym=e.ReadByte();for(var t=new Array(this.nsym),i=0;i<this.nsym;i++)t[i]=e.ReadByte();return[t,e.ReadUint7()]}decodePack(e,t,i){var n=new Buffer.allocUnsafe(i);if(this.nsym<=1)for(var r=0;r<i;r++)n[r]=t[0];else if(this.nsym<=2){r=0;for(var s=0;r<i;r++){if(r%8==0)var o=e[s++];n[r]=t[1&o],o>>=1}}else if(this.nsym<=4)for(r=0,s=0;r<i;r++)r%4==0&&(o=e[s++]),n[r]=t[3&o],o>>=2;else{if(!(this.nsym<=16))return e;for(r=0,s=0;r<i;r++)r%2==0&&(o=e[s++]),n[r]=t[15&o],o>>=4}return n}packMeta(e){for(var t=new r("",0,1024),i=new Array(256),n=0;n<e.length;n++)i[e[n]]=1;var s=0;for(n=0;n<256;n++)i[n]&&(i[n]=++s);for(t.WriteByte(s),n=0;n<256;n++)i[n]&&(t.WriteByte(n),i[n]--);return[t,i,s]}encodePack(e){var t,i,n;[t,i,n]=this.packMeta(e);var r=e.length,s=0;if(n<=1)return t.WriteUint7(0),[t,new Buffer.allocUnsafe(0),0];if(n<=2){for(var o=new Buffer.allocUnsafe(Math.floor((r+7)/8)),a=(s=0,0);s<(-8&r);s+=8,a++)o[a]=(i[e[s+0]]<<0)+(i[e[s+1]]<<1)+(i[e[s+2]]<<2)+(i[e[s+3]]<<3)+(i[e[s+4]]<<4)+(i[e[s+5]]<<5)+(i[e[s+6]]<<6)+(i[e[s+7]]<<7);if(s<r){o[a]=0;for(var l=0;s<r;)o[a]|=i[e[s++]]<<l,l++;a++}return t.WriteUint7(a),[t,o,o.length]}if(n<=4){for(o=new Buffer.allocUnsafe(Math.floor((r+3)/4)),s=0,a=0;s<(-4&r);s+=4,a++)o[a]=(i[e[s+0]]<<0)+(i[e[s+1]]<<2)+(i[e[s+2]]<<4)+(i[e[s+3]]<<6);if(s<r){for(o[a]=0,l=0;s<r;)o[a]|=i[e[s++]]<<l,l+=2;a++}return t.WriteUint7(a),[t,o,o.length]}if(n<=16){for(o=new Buffer.allocUnsafe(Math.floor((r+1)/2)),s=0,a=0;s<(-2&r);s+=2,a++)o[a]=(i[e[s+0]]<<0)+(i[e[s+1]]<<4);return s<r&&(o[a++]=i[e[s++]]),t.WriteUint7(a),[t,o,o.length]}return t.WriteUint7(e.length),[t,e,e.length]}encodeStripe(e,t,i){0==i&&(i=4);for(var n=new Array(i),s=new Array(i),o=0;o<i;o++)s[o]=Math.floor(t.length/i)+(t.length%i>o),n[o]=new Array(s[o]);for(var a=0,l=0;l<t.length;l+=i,a++)for(var h=0;h<i;h++)a<n[h].length&&(n[h][a]=t[l+h]);var c=new Array(i),d=0;for(o=0;o<i;o++){var u=this.encode(n[o],0),f=this.encode(n[o],1);c[o]=f.length<u.length?f:u,d+=c[o].length}var p=new r("",0,d+5*i+1);for(p.WriteByte(i),o=0;o<i;o++)p.WriteUint7(c[o].length);for(o=0;o<i;o++)p.WriteData(c[o],c[o].length);return p.buf.slice(0,p.buf.pos)}decodeStripe(e,t){for(var i=e.ReadByte(),n=new Array(i),r=new Array(i),s=0;s<i;s++)n[s]=e.ReadUint7();var o=new Array(i);for(s=0;s<i;s++)r[s]=Math.floor(t/i)+(t%i>s),o[s]=this.decodeStream(e,r[s]);var a=new Buffer.allocUnsafe(t);for(s=0;s<i;s++)for(var l=0;l<r[s];l++)a[l*i+s]=o[s][l];return a}decodeCat(e,t){for(var i=new Buffer.allocUnsafe(t),n=0;n<t;n++)i[n]=e.ReadByte();return i}}},7381:e=>{e.exports=class{constructor(e){this.low=0,this.range=4294967295,this.code=0,this.FFnum=0,this.carry=0,this.cache=0}RangeStartDecode(e){for(var t=0;t<5;t++)this.code=(this.code<<8)+e.ReadByte();this.code&=4294967295,this.code>>>=0}RangeGetFrequency(e){return this.range=Math.floor(this.range/e),Math.floor(this.code/this.range)}RangeDecode(e,t,i,n){for(this.code-=t*this.range,this.range*=i;this.range<1<<24;)this.range*=256,this.code=256*this.code+e.ReadByte()}RangeShiftLow(e){if(this.low<4278190080|this.carry){for(e.WriteByte(this.cache+this.carry);this.FFnum;)e.WriteByte(this.carry-1),this.FFnum--;this.cache=this.low>>>24,this.carry=0}else this.FFnum++;this.low<<=8,this.low>>>=0}RangeEncode(e,t,i,n){var r=this.low;for(this.range=Math.floor(this.range/n),this.low+=t*this.range,this.low>>>=0,this.range*=i,this.low<r&&(0!=this.carry&&console.log("ERROR: Multiple carry"),this.carry=1);this.range<1<<24;)this.range*=256,this.RangeShiftLow(e)}RangeFinishEncode(e){for(var t=0;t<5;t++)this.RangeShiftLow(e)}}},576:e=>{e.exports=class{constructor(e=256){this.total_freq=e,this.max_sym=e-1,this.S=new Array,this.F=new Array;for(var t=0;t<=this.max_sym;t++)this.S[t]=t,this.F[t]=1}ModelDecode(e,t){for(var i=t.RangeGetFrequency(this.total_freq),n=0,r=0;n+this.F[r]<=i;)n+=this.F[r++];t.RangeDecode(e,n,this.F[r],this.total_freq),this.F[r]+=16,this.total_freq+=16,this.total_freq>65519&&this.ModelRenormalise();var s=this.S[r];if(r>0&&this.F[r]>this.F[r-1]){var o=this.F[r];this.F[r]=this.F[r-1],this.F[r-1]=o,o=this.S[r],this.S[r]=this.S[r-1],this.S[r-1]=o}return s}ModelRenormalise(){this.total_freq=0;for(var e=0;e<=this.max_sym;e++)this.F[e]-=Math.floor(this.F[e]/2),this.total_freq+=this.F[e]}ModelEncode(e,t,i){for(var n=0,r=0;this.S[r]!=i;r++)n+=this.F[r];if(t.RangeEncode(e,n,this.F[r],this.total_freq),this.F[r]+=16,this.total_freq+=16,this.total_freq>65519&&this.ModelRenormalise(),i=this.S[r],r>0&&this.F[r]>this.F[r-1]){var s=this.F[r];this.F[r]=this.F[r-1],this.F[r-1]=s,s=this.S[r],this.S[r]=this.S[r-1],this.S[r-1]=s}}}},5260:(e,t,i)=>{const n=i(9260),r=i(576),s=i(7381);function o(e,t,i){for(var n=0,r=0,s=-1,o=new Array(1024);r<i;){var a=e.ReadByte();if(o[n++]=a,r+=a,a==s){var l=e.ReadByte();for(r+=a*l;l--;)o[n++]=a}s=a}var h=0;for(n=0,r=0;r<i;){var c=0;do{var d=o[n++];c+=d}while(255==d);for(;c--;)t[r++]=h;h++}}function a(e,t,i){var n=e.context;return t.qctx=(t.qctx<<e.qshift)+e.qtab[i],n+=(t.qctx&(1<<e.qbits)-1)<<e.qloc,e.do_pos&&(n+=e.ptab[Math.min(t.p,1023)]<<e.ploc),e.do_delta&&(n+=e.dtab[Math.min(t.delta,255)]<<e.dloc,t.delta+=t.prevq!=i?1:0,t.prevq=i),e.do_sel&&(n+=t.s<<e.sloc),t.p--,65535&n}function l(e){var t={};t.context=e.ReadUint16(),t.pflags=e.ReadByte(),t.do_dedup=2&t.pflags,t.fixed_len=4&t.pflags,t.do_sel=8&t.pflags,t.do_qmap=16&t.pflags,t.do_pos=32&t.pflags,t.do_delta=64&t.pflags,t.do_qtab=128&t.pflags,t.max_sym=e.ReadByte();var i=e.ReadByte();if(t.qbits=i>>4,t.qshift=15&i,i=e.ReadByte(),t.qloc=i>>4,t.sloc=15&i,i=e.ReadByte(),t.ploc=i>>4,t.dloc=15&i,t.qmap=new Array(256),16&t.pflags)for(var n=0;n<t.max_sym;n++)t.qmap[n]=e.ReadByte();else for(n=0;n<256;n++)t.qmap[n]=n;if(t.qtab=new Array(1024),t.qbits>0&&128&t.pflags)o(e,t.qtab,256);else for(n=0;n<256;n++)t.qtab[n]=n;return t.ptab=new Array(1024),32&t.pflags&&o(e,t.ptab,1024),t.dtab=new Array(256),64&t.pflags&&o(e,t.dtab,256),t}function h(e,t,i,n,r,s){i.max_sel>0?r.s=n.sel.ModelDecode(e,t):r.s=0,r.x=i.stab[r.s];var o=i.params[r.x];if(o.fixed_len>=0){var a=n.len[0].ModelDecode(e,t);a|=n.len[1].ModelDecode(e,t)<<8,a|=n.len[2].ModelDecode(e,t)<<16,a|=n.len[3].ModelDecode(e,t)<<24,o.fixed_len>0&&(o.fixed_len=-a)}else a=-o.fixed_len;r.len=a,i.do_rev&&(s[r.rec]=n.rev.ModelDecode(e,t)),r.is_dup=0,2&o.pflags&&n.dup.ModelDecode(e,t)&&(r.is_dup=1),r.p=a,r.delta=0,r.qctx=0,r.prevq=0,r.rec++}function c(e,t,i){for(var n=0,r=0,s=new Array(2*i),o=0;n<i;){for(var a=n;n<i&&t[n]==r;)n++;var l=n-a;do{var h=Math.min(255,l);s[o++]=h,l-=h}while(255==h);r++}var c=-1,d=new Array(2*i),u=0;for(n=0;n<o;){var f=s[n++];if(d[u++]=f,f==c){for(a=n;n<o&&s[n]==c&&n-a<255;)n++;d[u++]=n-a}else c=f}e.WriteData(d,u)}e.exports={decode:function(e,t){return function(e,t){var i=e.ReadUint7(),n=function(e){var t={max_sym:0};if(5==e.ReadByte()){var i=e.ReadByte(),n=1&i?e.ReadByte():1,r=i.nparam>1?i.nparam-1:0,s=new Array(256);if(2&i)r=e.ReadByte(),o(e,s,256);else{for(var a=0;a<n;a++)s[a]=a;for(;a<256;a++)s[a]=n-1}t.do_rev=4&i,t.stab=s,t.max_sel=r,t.params=new Array(t.nparam);for(var h=0;h<n;h++)t.params[h]=l(e),t.max_sym<t.params[h].max_sym&&(t.max_sym=t.params[h].max_sym);return t}console.error("Invalid FQZComp version number")}(e);if(n){var c=n.params,d=new Array(t.length),u=function(e){var t={};t.qual=new Array(65536);for(var i=0;i<65536;i++)t.qual[i]=new r(e.max_sym+1);for(t.len=new Array(4),i=0;i<4;i++)t.len[i]=new r(256);return t.rev=new r(2),t.dup=new r(2),e.max_sel>0&&(t.sel=new r(e.max_sel+1)),t}(n),f=new s(e);f.RangeStartDecode(e);for(var p=new Buffer.allocUnsafe(i),g={qctx:0,prevq:0,delta:0,p:0,s:0,x:0,len:0,is_dup:0,rec:0},m=0;m<i;){if(0==g.p){if(h(e,f,n,u,g,d),g.is_dup>0&&u.dup.ModelDecode(e,f)){for(var b=0;b<len;b++)p[m+b]=p[m+b-g.len];m+=g.len,g.p=0;continue}t.push(g.len);var w=(c=n.params[g.x]).context}var v=u.qual[w].ModelDecode(e,f);p[m++]=c.qmap[v],w=a(c,g,v)}return n.do_rev&&function(e,t,i,n){for(var r=0,s=0;s<t;){if(i[r])for(var o=0,a=n[r]-1;o<a;){var l=e[s+o];e[s+o]=e[s+a],e[s+a]=l,o++,a--}s+=n[r++]}}(p,i,d,t),p}}(new n(e),t)},encode:function(e,t,i){for(var o=new Array(2),a=new Array(2),l=new Array(2),h=new Array(2),d=new Array(256),u=0;u<2;u++)o[u]=new Array(256),a[u]=new Array(256),l[u]=new Array(1024),h[u]=new Array(256);(p=new n("",0,1.1*e.length+100)).WriteUint7(e.length);var f=function(e,t,i,n){for(var r=i[0],s=0;s<i.length&&i[s]==r;s++);var o=s==i.length?1:0,a=0,l=0;for(s=0;s<256;s++)n[0][s]=0;var h=0,c=0;for(s=0;s<e.length;s++)0==c&&(c=t[h<t.length-1?h++:h]),n[0][e[s]]++,c--;for(s=0;s<256;s++)n[0][s]&&(l<s&&(l=s),a++);var d=5,u=0;return a<=16&&(u=1,d=a<=2?1:a<=4?2:a<=8?3:4),[{qbits:8+(d>4),qshift:d,qloc:7,pbits:7,pshift:t[0]>128?1:0,ploc:0,dbits:d>4?0:1,dshift:3,dloc:15,sbits:0,sloc:15,do_stab:0,context:0,max_sym:l,nsym:a,do_qmap:u,do_dedup:0,fixed_len:1==t.length?1:0,do_sel:0,do_rev:0,do_pos:1,do_delta:d<=4?1:0,do_qtab:0,qbits:8+(d>4)-(0==o),sbits:1,sloc:15-(d<=4),do_stab:1,do_sel:1}]}(e,t,i,o),p=function(e,t,i,n,r,s,o){for(var a=[0,1,1,1,2,2,2,2,2,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7],l=0;l<t.length;l++)o[l]=l;for(;l<256;l++)o[l]=t.length-1;e.WriteByte(5);var h=(t.length>1?1:0)|(t[0].do_stab?2:0);if(e.WriteByte(h),1&h&&e.WriteByte(t.length),2&h){var d=1<<t[0].sbits;d>0&&d--,e.WriteByte(d),c(e,o,256)}for(var u=0;u<t.length;u++){if(e.WriteUint16(t[u].context),e.WriteByte((t[u].do_qtab?128:0)|(t[u].do_delta?64:0)|(t[u].do_pos?32:0)|(t[u].do_qmap?16:0)|(t[u].do_sel?8:0)|(t[u].fixed_len?4:0)|(t[u].do_dedup?2:0)),t[u].do_qmap?e.WriteByte(t[u].nsym):e.WriteByte(t[u].max_sym),e.WriteByte(t[u].qbits<<4|t[u].qshift),e.WriteByte(t[u].qloc<<4|t[u].sloc),e.WriteByte(t[u].ploc<<4|t[u].dloc),t[u].do_qmap){t[u].max_sym=t[u].nsym;var f=0;for(l=0;l<256;l++)i[u][l]&&(e.WriteByte(l),i[u][l]=f++);for(;f<t[u].nsym;f++)e.WriteByte(0)}else for(l=0;l<256;l++)i[u][l]=l;if(t[u].qbits>0){for(l=0;l<256;l++)n[u][l]=l;t[u].do_qtab&&c(e,n[u],256)}if(t[u].pbits>0){for(l=0;l<1024;l++)r[u][l]=Math.min((1<<t[u].pbits)-1,l>>t[u].pshift);c(e,r[u],1024)}if(t[u].dbits>0){for(l=0;l<256;l++)a[l]>(1<<t[u].dbits)-1&&(a[l]=(1<<t[u].dbits)-1);for(l=0;l<256;l++)s[u][l]=a[Math.min(a.length-1,l>>t[u].dshift)];c(e,s[u],256)}}return e}(p,f,o,a,l,h,d);return function(e,t,i,n,o,a,l,h,c,d){var u=1<<o[0].sbits;u>0&&u--;for(var f=t.length,p=0,g=0;g<o.length;g++)p<o[g].max_sym&&(p=o[g].max_sym);for(var m=new Array(65536),b=0;b<65536;b++)m[b]=new r(p+1);var w=new Array(4);for(b=0;b<4;b++)w[b]=new r(256);new r(2),new r(2);for(var v=new r(u+1),y=new s(t),_=(g=0,b=0,0);b<f;){if(0==g){var x=n[_];o[0].sbits>0&&v.ModelEncode(e,y,x);var k=d[x],C=i[Math.min(i.length-1,_++)];o[k].fixed_len?o[k].fixed_len>0&&(w[0].ModelEncode(e,y,255&C),w[1].ModelEncode(e,y,C>>8&255),w[2].ModelEncode(e,y,C>>16&255),w[3].ModelEncode(e,y,C>>24&255),o[k].fixed_len=-1):(w[0].ModelEncode(e,y,255&C),w[1].ModelEncode(e,y,C>>8&255),w[2].ModelEncode(e,y,C>>16&255),w[3].ModelEncode(e,y,C>>24&255)),o[k].do_dedup&&process.exit(1),g=C;var S=0,A=o[k].context,E=0,T=0}var M=t[b++],R=a[k][M];m[A].ModelEncode(e,y,R),E=(E<<o[k].qshift)+l[k][R],A=o[k].context,A+=(E&(1<<o[k].qbits)-1)<<o[k].qloc,o[k].pbits>0&&(A+=h[k][Math.min(g,1023)]<<o[k].ploc),o[k].dbits>0&&(A+=c[k][Math.min(S,255)]<<o[k].dloc,S+=T!=R?1:0,T=R),o[k].do_sel&&(A+=x<<o[k].sloc),A&=65535,g--}return y.RangeFinishEncode(e),e.buf.slice(0,e.pos)}(p,e,t,i,f,o,a,l,h,d)}}},3498:(e,t,i)=>{var n=i(4459),r=i(594),s=i(445),o=i(5260),a=i(2881);e.exports={r4x8_uncompress:function(e,t){n.decode(e).copy(t,0,0)},r4x16_uncompress:function(e,t){r.decode(e).copy(t,0,0)},arith_uncompress:function(e,t){s.decode(e).copy(t,0,0)},fqzcomp_uncompress:function(e,t){var i=new Array;o.decode(e,i).copy(t,0,0)},tok3_uncompress:function(e,t){var i=a.decode(e,0,"\0");Buffer.from(i,"binary").copy(t,0,0)}}},9260:e=>{e.exports=class{constructor(e,t=0,i=0){0!=i?(this.buf=Buffer.allocUnsafe(i),this.length=i):(this.buf=e,this.length=e.length),this.pos=t}EOF(){return this.pos>=this.length}ReadData(e){var t=this.buf.slice(this.pos,this.pos+e);return this.pos+=e,t}ReadByte(){const e=this.buf[this.pos];return this.pos++,e}ReadChar(){const e=this.buf[this.pos];return this.pos++,String.fromCharCode(e)}ReadUint16(){return this.ReadByte()|this.ReadByte()<<8}ReadUint32(){const e=this.buf.readInt32LE(this.pos);return this.pos+=4,e}ReadString(){var e="";do{var t=this.buf[this.pos++];t&&(e+=String.fromCharCode(t))}while(t);return e}ReadUint7(){var e=0;do{var t=this.ReadByte();e=e<<7|127&t}while(128&t);return e}ReadITF8(){var e=this.buf[this.pos];return this.pos++,e>=240?(e=(15&e)<<28,e+=(this.buf[this.pos+0]<<20)+(this.buf[this.pos+1]<<12)+(this.buf[this.pos+2]<<4)+(this.buf[this.pos+3]>>4),this.pos+=4):e>=224?(e=(15&e)<<24,e+=(this.buf[this.pos+0]<<16)+(this.buf[this.pos+1]<<8)+(this.buf[this.pos+2]<<0),this.pos+=3):e>=192?(e=(31&e)<<16,e+=(this.buf[this.pos+0]<<8)+(this.buf[this.pos+1]<<0),this.pos+=2):e>=128&&(e=(63&e)<<8,e+=this.buf[this.pos],this.pos++),e}WriteByte(e){this.buf[this.pos++]=e}WriteChar(e){this.buf[this.pos++]=e.charCodeAt(0)}WriteString(e){for(var t=0;t<e.length;t++)this.buf[this.pos++]=e.charCodeAt(t);this.buf[this.pos++]=0}WriteData(e,t){for(var i=0;i<t;i++)this.buf[this.pos++]=e[i]}WriteStream(e){this.WriteData(e.buf,e.pos)}WriteUint16(e){this.WriteByte(255&e),this.WriteByte(e>>8&255)}WriteUint32(e){this.buf.writeInt32LE(e,this.pos),this.pos+=4}WriteUint7(e){var 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n(e)||(e=d(e)),(this.unsigned===e.unsigned||this.high>>>31!=1||e.high>>>31!=1)&&this.high===e.high&&this.low===e.low},C.eq=C.equals,C.notEquals=function(e){return!this.eq(e)},C.neq=C.notEquals,C.ne=C.notEquals,C.lessThan=function(e){return this.comp(e)<0},C.lt=C.lessThan,C.lessThanOrEqual=function(e){return this.comp(e)<=0},C.lte=C.lessThanOrEqual,C.le=C.lessThanOrEqual,C.greaterThan=function(e){return this.comp(e)>0},C.gt=C.greaterThan,C.greaterThanOrEqual=function(e){return this.comp(e)>=0},C.gte=C.greaterThanOrEqual,C.ge=C.greaterThanOrEqual,C.compare=function(e){if(n(e)||(e=d(e)),this.eq(e))return 0;var t=this.isNegative(),i=e.isNegative();return t&&!i?-1:!t&&i?1:this.unsigned?e.high>>>0>this.high>>>0||e.high===this.high&&e.low>>>0>this.low>>>0?-1:1:this.sub(e).isNegative()?-1:1},C.comp=C.compare,C.negate=function(){return!this.unsigned&&this.eq(k)?k:this.not().add(w)},C.neg=C.negate,C.add=function(e){n(e)||(e=d(e));var t=this.high>>>16,i=65535&this.high,r=this.low>>>16,s=65535&this.low,o=e.high>>>16,a=65535&e.high,h=e.low>>>16,c=0,u=0,f=0,p=0;return f+=(p+=s+(65535&e.low))>>>16,u+=(f+=r+h)>>>16,c+=(u+=i+a)>>>16,c+=t+o,l((f&=65535)<<16|(p&=65535),(c&=65535)<<16|(u&=65535),this.unsigned)},C.subtract=function(e){return n(e)||(e=d(e)),this.add(e.neg())},C.sub=C.subtract,C.multiply=function(e){if(this.isZero())return m;if(n(e)||(e=d(e)),t)return l(t.mul(this.low,this.high,e.low,e.high),t.get_high(),this.unsigned);if(e.isZero())return m;if(this.eq(k))return e.isOdd()?k:m;if(e.eq(k))return this.isOdd()?k:m;if(this.isNegative())return e.isNegative()?this.neg().mul(e.neg()):this.neg().mul(e).neg();if(e.isNegative())return this.mul(e.neg()).neg();if(this.lt(g)&&e.lt(g))return a(this.toNumber()*e.toNumber(),this.unsigned);var i=this.high>>>16,r=65535&this.high,s=this.low>>>16,o=65535&this.low,h=e.high>>>16,c=65535&e.high,u=e.low>>>16,f=65535&e.low,p=0,b=0,w=0,v=0;return 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e=this.high,t=this.low;return[e>>>24,e>>>16&255,e>>>8&255,255&e,t>>>24,t>>>16&255,t>>>8&255,255&t]},i.fromBytes=function(e,t,n){return n?i.fromBytesLE(e,t):i.fromBytesBE(e,t)},i.fromBytesLE=function(e,t){return new i(e[0]|e[1]<<8|e[2]<<16|e[3]<<24,e[4]|e[5]<<8|e[6]<<16|e[7]<<24,t)},i.fromBytesBE=function(e,t){return new i(e[4]<<24|e[5]<<16|e[6]<<8|e[7],e[0]<<24|e[1]<<16|e[2]<<8|e[3],t)}},2568:(e,t,i)=>{var n,r,s,o,a;n=i(1012),r=i(487).utf8,s=i(8738),o=i(487).bin,(a=function(e,t){e.constructor==String?e=t&&"binary"===t.encoding?o.stringToBytes(e):r.stringToBytes(e):s(e)?e=Array.prototype.slice.call(e,0):Array.isArray(e)||e.constructor===Uint8Array||(e=e.toString());for(var i=n.bytesToWords(e),l=8*e.length,h=1732584193,c=-271733879,d=-1732584194,u=271733878,f=0;f<i.length;f++)i[f]=16711935&(i[f]<<8|i[f]>>>24)|4278255360&(i[f]<<24|i[f]>>>8);i[l>>>5]|=128<<l%32,i[14+(l+64>>>9<<4)]=l;var p=a._ff,g=a._gg,m=a._hh,b=a._ii;for(f=0;f<i.length;f+=16){var 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e;C=0;do{N=u[p+C++],i.head&&N&&i.length<65536&&(i.head.name+=String.fromCharCode(N))}while(N&&C<m);if(512&i.flags&&(i.check=s(i.check,u,C,p)),m-=C,p+=C,N)break e}else i.head&&(i.head.name=null);i.length=0,i.mode=8;case 8:if(4096&i.flags){if(0===m)break e;C=0;do{N=u[p+C++],i.head&&N&&i.length<65536&&(i.head.comment+=String.fromCharCode(N))}while(N&&C<m);if(512&i.flags&&(i.check=s(i.check,u,C,p)),m-=C,p+=C,N)break e}else i.head&&(i.head.comment=null);i.mode=9;case 9:if(512&i.flags){for(;v<16;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}if(w!==(65535&i.check)){e.msg="header crc mismatch",i.mode=c;break}w=0,v=0}i.head&&(i.head.hcrc=i.flags>>9&1,i.head.done=!0),e.adler=i.check=0,i.mode=h;break;case 10:for(;v<32;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}e.adler=i.check=d(w),w=0,v=0,i.mode=11;case 11:if(0===i.havedict)return e.next_out=g,e.avail_out=b,e.next_in=p,e.avail_in=m,i.hold=w,i.bits=v,2;e.adler=i.check=1,i.mode=h;case h:if(5===t||6===t)break e;case 13:if(i.last){w>>>=7&v,v-=7&v,i.mode=27;break}for(;v<3;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}switch(i.last=1&w,v-=1,3&(w>>>=1)){case 0:i.mode=14;break;case 1:if(y(i),i.mode=20,6===t){w>>>=2,v-=2;break e}break;case 2:i.mode=17;break;case 3:e.msg="invalid block type",i.mode=c}w>>>=2,v-=2;break;case 14:for(w>>>=7&v,v-=7&v;v<32;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}if((65535&w)!=(w>>>16^65535)){e.msg="invalid stored block lengths",i.mode=c;break}if(i.length=65535&w,w=0,v=0,i.mode=15,6===t)break e;case 15:i.mode=16;case 16:if(C=i.length){if(C>m&&(C=m),C>b&&(C=b),0===C)break e;n.arraySet(f,u,p,C,g),m-=C,p+=C,b-=C,g+=C,i.length-=C;break}i.mode=h;break;case 17:for(;v<14;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}if(i.nlen=257+(31&w),w>>>=5,v-=5,i.ndist=1+(31&w),w>>>=5,v-=5,i.ncode=4+(15&w),w>>>=4,v-=4,i.nlen>286||i.ndist>30){e.msg="too many length or distance symbols",i.mode=c;break}i.have=0,i.mode=18;case 18:for(;i.have<i.ncode;){for(;v<3;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}i.lens[z[i.have++]]=7&w,w>>>=3,v-=3}for(;i.have<19;)i.lens[z[i.have++]]=0;if(i.lencode=i.lendyn,i.lenbits=7,B={bits:i.lenbits},F=a(0,i.lens,0,19,i.lencode,0,i.work,B),i.lenbits=B.bits,F){e.msg="invalid code lengths set",i.mode=c;break}i.have=0,i.mode=19;case 19:for(;i.have<i.nlen+i.ndist;){for(;T=(D=i.lencode[w&(1<<i.lenbits)-1])>>>16&255,M=65535&D,!((E=D>>>24)<=v);){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}if(M<16)w>>>=E,v-=E,i.lens[i.have++]=M;else{if(16===M){for(O=E+2;v<O;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}if(w>>>=E,v-=E,0===i.have){e.msg="invalid bit length repeat",i.mode=c;break}N=i.lens[i.have-1],C=3+(3&w),w>>>=2,v-=2}else if(17===M){for(O=E+3;v<O;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}v-=E,N=0,C=3+(7&(w>>>=E)),w>>>=3,v-=3}else{for(O=E+7;v<O;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}v-=E,N=0,C=11+(127&(w>>>=E)),w>>>=7,v-=7}if(i.have+C>i.nlen+i.ndist){e.msg="invalid bit length repeat",i.mode=c;break}for(;C--;)i.lens[i.have++]=N}}if(i.mode===c)break;if(0===i.lens[256]){e.msg="invalid code -- missing end-of-block",i.mode=c;break}if(i.lenbits=9,B={bits:i.lenbits},F=a(1,i.lens,0,i.nlen,i.lencode,0,i.work,B),i.lenbits=B.bits,F){e.msg="invalid literal/lengths set",i.mode=c;break}if(i.distbits=6,i.distcode=i.distdyn,B={bits:i.distbits},F=a(2,i.lens,i.nlen,i.ndist,i.distcode,0,i.work,B),i.distbits=B.bits,F){e.msg="invalid distances set",i.mode=c;break}if(i.mode=20,6===t)break e;case 20:i.mode=21;case 21:if(m>=6&&b>=258){e.next_out=g,e.avail_out=b,e.next_in=p,e.avail_in=m,i.hold=w,i.bits=v,o(e,k),g=e.next_out,f=e.output,b=e.avail_out,p=e.next_in,u=e.input,m=e.avail_in,w=i.hold,v=i.bits,i.mode===h&&(i.back=-1);break}for(i.back=0;T=(D=i.lencode[w&(1<<i.lenbits)-1])>>>16&255,M=65535&D,!((E=D>>>24)<=v);){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}if(T&&0==(240&T)){for(R=E,L=T,I=M;T=(D=i.lencode[I+((w&(1<<R+L)-1)>>R)])>>>16&255,M=65535&D,!(R+(E=D>>>24)<=v);){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}w>>>=R,v-=R,i.back+=R}if(w>>>=E,v-=E,i.back+=E,i.length=M,0===T){i.mode=26;break}if(32&T){i.back=-1,i.mode=h;break}if(64&T){e.msg="invalid literal/length code",i.mode=c;break}i.extra=15&T,i.mode=22;case 22:if(i.extra){for(O=i.extra;v<O;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}i.length+=w&(1<<i.extra)-1,w>>>=i.extra,v-=i.extra,i.back+=i.extra}i.was=i.length,i.mode=23;case 23:for(;T=(D=i.distcode[w&(1<<i.distbits)-1])>>>16&255,M=65535&D,!((E=D>>>24)<=v);){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}if(0==(240&T)){for(R=E,L=T,I=M;T=(D=i.distcode[I+((w&(1<<R+L)-1)>>R)])>>>16&255,M=65535&D,!(R+(E=D>>>24)<=v);){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}w>>>=R,v-=R,i.back+=R}if(w>>>=E,v-=E,i.back+=E,64&T){e.msg="invalid distance code",i.mode=c;break}i.offset=M,i.extra=15&T,i.mode=24;case 24:if(i.extra){for(O=i.extra;v<O;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}i.offset+=w&(1<<i.extra)-1,w>>>=i.extra,v-=i.extra,i.back+=i.extra}if(i.offset>i.dmax){e.msg="invalid distance too far back",i.mode=c;break}i.mode=25;case 25:if(0===b)break e;if(C=k-b,i.offset>C){if((C=i.offset-C)>i.whave&&i.sane){e.msg="invalid distance too far back",i.mode=c;break}C>i.wnext?(C-=i.wnext,S=i.wsize-C):S=i.wnext-C,C>i.length&&(C=i.length),A=i.window}else A=f,S=g-i.offset,C=i.length;C>b&&(C=b),b-=C,i.length-=C;do{f[g++]=A[S++]}while(--C);0===i.length&&(i.mode=21);break;case 26:if(0===b)break e;f[g++]=i.length,b--,i.mode=21;break;case 27:if(i.wrap){for(;v<32;){if(0===m)break e;m--,w|=u[p++]<<v,v+=8}if(k-=b,e.total_out+=k,i.total+=k,k&&(e.adler=i.check=i.flags?s(i.check,f,k,g-k):r(i.check,f,k,g-k)),k=b,(i.flags?w:d(w))!==i.check){e.msg="incorrect data check",i.mode=c;break}w=0,v=0}i.mode=28;case 28:if(i.wrap&&i.flags){for(;v<32;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}if(w!==(4294967295&i.total)){e.msg="incorrect length check",i.mode=c;break}w=0,v=0}i.mode=29;case 29:F=1;break e;case c:F=-3;break e;case 31:return-4;default:return l}return e.next_out=g,e.avail_out=b,e.next_in=p,e.avail_in=m,i.hold=w,i.bits=v,(i.wsize||k!==e.avail_out&&i.mode<c&&(i.mode<27||4!==t))&&_(e,e.output,e.next_out,k-e.avail_out)?(i.mode=31,-4):(x-=e.avail_in,k-=e.avail_out,e.total_in+=x,e.total_out+=k,i.total+=k,i.wrap&&k&&(e.adler=i.check=i.flags?s(i.check,f,k,e.next_out-k):r(i.check,f,k,e.next_out-k)),e.data_type=i.bits+(i.last?64:0)+(i.mode===h?128:0)+(20===i.mode||15===i.mode?256:0),(0===x&&0===k||4===t)&&0===F&&(F=-5),F)},t.inflateEnd=function(e){if(!e||!e.state)return l;var t=e.state;return t.window&&(t.window=null),e.state=null,0},t.inflateGetHeader=function(e,t){var i;return e&&e.state?0==(2&(i=e.state).wrap)?l:(i.head=t,t.done=!1,0):l},t.inflateSetDictionary=function(e,t){var i,n=t.length;return e&&e.state?0!==(i=e.state).wrap&&11!==i.mode?l:11===i.mode&&r(1,t,n,0)!==i.check?-3:_(e,t,n,n)?(i.mode=31,-4):(i.havedict=1,0):l},t.inflateInfo="pako inflate (from Nodeca project)"},9241:(e,t,i)=>{var n=i(4236),r=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],s=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],o=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],a=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];e.exports=function(e,t,i,l,h,c,d,u){var f,p,g,m,b,w,v,y,_,x=u.bits,k=0,C=0,S=0,A=0,E=0,T=0,M=0,R=0,L=0,I=0,N=null,F=0,B=new n.Buf16(16),O=new n.Buf16(16),D=null,P=0;for(k=0;k<=15;k++)B[k]=0;for(C=0;C<l;C++)B[t[i+C]]++;for(E=x,A=15;A>=1&&0===B[A];A--);if(E>A&&(E=A),0===A)return h[c++]=20971520,h[c++]=20971520,u.bits=1,0;for(S=1;S<A&&0===B[S];S++);for(E<S&&(E=S),R=1,k=1;k<=15;k++)if(R<<=1,(R-=B[k])<0)return-1;if(R>0&&(0===e||1!==A))return-1;for(O[1]=0,k=1;k<15;k++)O[k+1]=O[k]+B[k];for(C=0;C<l;C++)0!==t[i+C]&&(d[O[t[i+C]]++]=C);if(0===e?(N=D=d,w=19):1===e?(N=r,F-=257,D=s,P-=257,w=256):(N=o,D=a,w=-1),I=0,C=0,k=S,b=c,T=E,M=0,g=-1,m=(L=1<<E)-1,1===e&&L>852||2===e&&L>592)return 1;for(;;){v=k-M,d[C]<w?(y=0,_=d[C]):d[C]>w?(y=D[P+d[C]],_=N[F+d[C]]):(y=96,_=0),f=1<<k-M,S=p=1<<T;do{h[b+(I>>M)+(p-=f)]=v<<24|y<<16|_|0}while(0!==p);for(f=1<<k-1;I&f;)f>>=1;if(0!==f?(I&=f-1,I+=f):I=0,C++,0==--B[k]){if(k===A)break;k=t[i+d[C]]}if(k>E&&(I&m)!==g){for(0===M&&(M=E),b+=S,R=1<<(T=k-M);T+M<A&&!((R-=B[T+M])<=0);)T++,R<<=1;if(L+=1<<T,1===e&&L>852||2===e&&L>592)return 1;h[g=I&m]=E<<24|T<<16|b-c|0}}return 0!==I&&(h[b+I]=k-M<<24|64<<16|0),u.bits=E,0}},8898:e=>{e.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"}},342:(e,t,i)=>{var n=i(4236);function r(e){for(var t=e.length;--t>=0;)e[t]=0}var s=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0],o=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13],a=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7],l=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],h=new Array(576);r(h);var c=new Array(60);r(c);var d=new Array(512);r(d);var u=new Array(256);r(u);var f=new Array(29);r(f);var p,g,m,b=new Array(30);function w(e,t,i,n,r){this.static_tree=e,this.extra_bits=t,this.extra_base=i,this.elems=n,this.max_length=r,this.has_stree=e&&e.length}function v(e,t){this.dyn_tree=e,this.max_code=0,this.stat_desc=t}function y(e){return e<256?d[e]:d[256+(e>>>7)]}function _(e,t){e.pending_buf[e.pending++]=255&t,e.pending_buf[e.pending++]=t>>>8&255}function x(e,t,i){e.bi_valid>16-i?(e.bi_buf|=t<<e.bi_valid&65535,_(e,e.bi_buf),e.bi_buf=t>>16-e.bi_valid,e.bi_valid+=i-16):(e.bi_buf|=t<<e.bi_valid&65535,e.bi_valid+=i)}function k(e,t,i){x(e,i[2*t],i[2*t+1])}function C(e,t){var i=0;do{i|=1&e,e>>>=1,i<<=1}while(--t>0);return i>>>1}function S(e,t,i){var n,r,s=new Array(16),o=0;for(n=1;n<=15;n++)s[n]=o=o+i[n-1]<<1;for(r=0;r<=t;r++){var a=e[2*r+1];0!==a&&(e[2*r]=C(s[a]++,a))}}function A(e){var t;for(t=0;t<286;t++)e.dyn_ltree[2*t]=0;for(t=0;t<30;t++)e.dyn_dtree[2*t]=0;for(t=0;t<19;t++)e.bl_tree[2*t]=0;e.dyn_ltree[512]=1,e.opt_len=e.static_len=0,e.last_lit=e.matches=0}function E(e){e.bi_valid>8?_(e,e.bi_buf):e.bi_valid>0&&(e.pending_buf[e.pending++]=e.bi_buf),e.bi_buf=0,e.bi_valid=0}function T(e,t,i,n){var r=2*t,s=2*i;return e[r]<e[s]||e[r]===e[s]&&n[t]<=n[i]}function M(e,t,i){for(var n=e.heap[i],r=i<<1;r<=e.heap_len&&(r<e.heap_len&&T(t,e.heap[r+1],e.heap[r],e.depth)&&r++,!T(t,n,e.heap[r],e.depth));)e.heap[i]=e.heap[r],i=r,r<<=1;e.heap[i]=n}function R(e,t,i){var n,r,a,l,h=0;if(0!==e.last_lit)do{n=e.pending_buf[e.d_buf+2*h]<<8|e.pending_buf[e.d_buf+2*h+1],r=e.pending_buf[e.l_buf+h],h++,0===n?k(e,r,t):(k(e,(a=u[r])+256+1,t),0!==(l=s[a])&&x(e,r-=f[a],l),k(e,a=y(--n),i),0!==(l=o[a])&&x(e,n-=b[a],l))}while(h<e.last_lit);k(e,256,t)}function L(e,t){var i,n,r,s=t.dyn_tree,o=t.stat_desc.static_tree,a=t.stat_desc.has_stree,l=t.stat_desc.elems,h=-1;for(e.heap_len=0,e.heap_max=573,i=0;i<l;i++)0!==s[2*i]?(e.heap[++e.heap_len]=h=i,e.depth[i]=0):s[2*i+1]=0;for(;e.heap_len<2;)s[2*(r=e.heap[++e.heap_len]=h<2?++h:0)]=1,e.depth[r]=0,e.opt_len--,a&&(e.static_len-=o[2*r+1]);for(t.max_code=h,i=e.heap_len>>1;i>=1;i--)M(e,s,i);r=l;do{i=e.heap[1],e.heap[1]=e.heap[e.heap_len--],M(e,s,1),n=e.heap[1],e.heap[--e.heap_max]=i,e.heap[--e.heap_max]=n,s[2*r]=s[2*i]+s[2*n],e.depth[r]=(e.depth[i]>=e.depth[n]?e.depth[i]:e.depth[n])+1,s[2*i+1]=s[2*n+1]=r,e.heap[1]=r++,M(e,s,1)}while(e.heap_len>=2);e.heap[--e.heap_max]=e.heap[1],function(e,t){var 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C&&(i.hostname=i.host=R?"":k.length?k.shift():"",(M=!!(i.host&&i.host.indexOf("@")>0)&&i.host.split("@"))&&(i.auth=M.shift(),i.host=i.hostname=M.shift())),(_=_||i.host&&k.length)&&!R&&k.unshift(""),k.length?i.pathname=k.join("/"):(i.pathname=null,i.path=null),r.isNull(i.pathname)&&r.isNull(i.search)||(i.path=(i.pathname?i.pathname:"")+(i.search?i.search:"")),i.auth=e.auth||i.auth,i.slashes=i.slashes||e.slashes,i.href=i.format(),i},s.prototype.parseHost=function(){var e=this.host,t=a.exec(e);t&&(":"!==(t=t[0])&&(this.port=t.substr(1)),e=e.substr(0,e.length-t.length)),e&&(this.hostname=e)}},2502:e=>{e.exports={isString:function(e){return"string"==typeof e},isObject:function(e){return"object"==typeof e&&null!==e},isNull:function(e){return null===e},isNullOrUndefined:function(e){return null==e}}},7067:()=>{}},t={};function i(n){var r=t[n];if(void 0!==r)return r.exports;var s=t[n]={id:n,loaded:!1,exports:{}};return e[n].call(s.exports,s,s.exports,i),s.loaded=!0,s.exports}return i.n=e=>{var t=e&&e.__esModule?()=>e.default:()=>e;return i.d(t,{a:t}),t},i.d=(e,t)=>{for(var n in t)i.o(t,n)&&!i.o(e,n)&&Object.defineProperty(e,n,{enumerable:!0,get:t[n]})},i.g=function(){if("object"==typeof globalThis)return globalThis;try{return this||new Function("return this")()}catch(e){if("object"==typeof window)return window}}(),i.o=(e,t)=>Object.prototype.hasOwnProperty.call(e,t),i.r=e=>{"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0})},i.nmd=e=>(e.paths=[],e.children||(e.children=[]),e),i(5590)})();class tu{constructor(e,t,i){this.config=e,this.browser=i,this.genome=t,this.cramFile=new eu.CramFile({filehandle:new iu(e.url,e),seqFetch:e.seqFetch||function(e,t,i){const n=this.genome.sequence,r=this.genome;return this.getHeader().then((function(s){const o=r.getChromosomeName(s.chrNames[e]);return n.getSequence(o,t-1,i)}))}.bind(this),checkSequenceMD5:void 0===e.checkSequenceMD5||e.checkSequenceMD5});const n=new iu(e.indexURL,e);this.indexedCramFile=new eu.IndexedCramFile({cram:this.cramFile,index:new eu.CraiIndex({filehandle:n}),fetchSizeLimit:3e7}),qd.setReaderDefaults(this,e)}async getHeader(){if(!this.header){const e=this.genome,t=await this.cramFile.getSamHeader(),i={},n=[],r={},s=[];for(let o of t)if("SQ"===o.tag){for(let t of o.data)if("SN"===t.tag){const s=t.value;if(i[s]=n.length,n.push(s),e){r[e.getChromosomeName(s)]=s}break}}else"RG"===o.tag&&s.push(o.data);this.header={chrNames:n,chrToIndex:i,chrAliasTable:r,readGroups:s}}return this.header}async readAlignments(e,t,i){this.browser;const n=await this.getHeader(),r=n.chrAliasTable.hasOwnProperty(e)?n.chrAliasTable[e]:e,s=n.chrToIndex[r],o=new _d(e,t,i,this.config);if(void 0===s)return o;try{const e=await this.indexedCramFile.getRecordsForRange(s,t,i);for(let r of e){const e=r.sequenceId,l=r.alignmentStart,h=l+r.lengthOnRef;if(e<0)continue;if(e>s||l>i)return;if(e<s)continue;if(h<t)continue;const c=a(r,n.chrNames);this.filter.pass(c)&&o.push(c)}return o.finish(),o}catch(e){let t=e.message;throw t&&t.indexOf("MD5")>=0&&(t="Sequence mismatch. Is this the correct genome for the loaded CRAM?"),this.browser.alert.present(new Error(t)),e}function a(e,t){const i=new Md;if(i.chr=t[e.sequenceId],i.start=e.alignmentStart-1,i.lengthOnRef=e.lengthOnRef,i.flags=e.flags,i.strand=!(16&e.flags),i.fragmentLength=e.templateLength||e.templateSize,i.mq=e.mappingQuality,i.end=e.alignmentStart+e.lengthOnRef,i.readGroupId=e.readGroupId,e.mate&&void 0!==e.mate.sequenceId){const n=void 0!==e.mate.flags?!(1&e.mate.flags):!(32&e.flags);i.mate={chr:t[e.mate.sequenceId],position:e.mate.alignmentStart,strand:n}}return i.seq=e.getReadBases(),i.qual=e.qualityScores,i.tagDict=e.tags,i.readName=e.readName,function(e,t){const i=[];let n,r,s=0,o="";if(t.scStart=t.start,t.scLengthOnRef=t.lengthOnRef,e.readFeatures)for(let a of e.readFeatures){const e=a.code,l=a.data,h=a.pos-1,c=a.refPos-1;switch(e){case"S":case"I":case"i":case"N":case"D":if(h>s){const e=h-s;i.push(new Dd({start:c-e,seqOffset:s,len:e,type:"M"})),s+=e,o+=e+"M"}if("S"===e){let n=c;t.scLengthOnRef+=l.length,0===h&&(t.scStart-=l.length,n-=l.length);const r=l.length;i.push(new Dd({start:n,seqOffset:s,len:r,type:"S"})),s+=r,o+=r+e}else if("I"===e||"i"===e){void 0===n&&(n=[]);const t="i"===e?1:l.length;n.push(new Dd({start:c,len:t,seqOffset:s,type:"I"})),s+=t,o+=t+e}else"D"!==e&&"N"!==e||(r||(r=[]),r.push({start:c,len:l,type:e}),o+=l+e);break;case"H":case"P":o+=l+e}}const a=e.readLength-s;a>0&&(i.push(new Dd({start:e.alignmentStart+e.lengthOnRef-a-1,seqOffset:s,len:a,type:"M"})),o+=a+"M");t.blocks=i,t.insertions=n,t.gaps=r,t.cigar=o}(e,i),i.mate&&i.start>i.mate.position&&i.fragmentLength>0&&(i.fragmentLength=-i.fragmentLength),qd.setPairOrientation(i),i}}}class iu{constructor(e,t){this.position=0,this.url=e,this.config=t,this.cache=new nu({fetch:(e,t)=>this._fetch(e,t)})}async _fetch(e,t){const i={start:e,size:t};this._stat={size:void 0};const n=await ta.loadArrayBuffer(this.url,Sa(this.config,{range:i}));return Buffer.from(n)}async read(e,t=0,i=1/0,n=0){let r=n;return null===n&&(r=this.position,this.position+=i),this.cache.get(e,t,i,n)}async readFile(){const e=await ta.loadArrayBuffer(this.url,Sa(this.config));return Buffer.from(e)}async stat(){if(!this._stat){const e=Buffer.allocUnsafe(10);if(await this.read(e,0,10,0),!this._stat)throw new Error(`unable to determine size of file at ${this.url}`)}return this._stat}}class nu{constructor({fetch:e,size:t=1e7,chunkSize:i=32768}){this.fetch=e,this.chunkSize=i,this.lruCache=new ru({maxSize:Math.floor(t/i)})}async get(e,t,i,n){if(e.length<t+i)throw new Error("output buffer not big enough for request");const r=Math.floor(n/this.chunkSize),s=Math.floor((n+i)/this.chunkSize),o=new Array(s-r+1);for(let e=r;e<=s;e+=1)o[e-r]=this._getChunk(e).then((t=>({data:t,chunkNumber:e})));const a=await Promise.all(o),l=n-a[0].chunkNumber*this.chunkSize;a.forEach((({data:o,chunkNumber:a})=>{const h=a*this.chunkSize;let c=0,d=this.chunkSize,u=t+(a-r)*this.chunkSize-l;a===r&&(u=t,c=l),a===s&&(d=n+i-h),o.copy(e,u,c,d)}))}_getChunk(e){const t=this.lruCache.get(e);if(t)return t;const i=this.fetch(e*this.chunkSize,this.chunkSize);return this.lruCache.set(e,i),i}}class ru{constructor(e={}){if(!(e.maxSize&&e.maxSize>0))throw new TypeError("`maxSize` must be a number greater than 0");this.maxSize=e.maxSize,this.cache=new Map,this.oldCache=new Map,this._size=0}_set(e,t){this.cache.set(e,t),this._size++,this._size>=this.maxSize&&(this._size=0,this.oldCache=this.cache,this.cache=new Map)}get(e){if(this.cache.has(e))return this.cache.get(e);if(this.oldCache.has(e)){const t=this.oldCache.get(e);return this._set(e,t),t}}set(e,t){return this.cache.has(e)?this.cache.set(e,t):this._set(e,t),this}has(e){return this.cache.has(e)||this.oldCache.has(e)}peek(e){return this.cache.has(e)?this.cache.get(e):this.oldCache.has(e)?this.oldCache.get(e):void 0}delete(e){const t=this.cache.delete(e);return t&&this._size--,this.oldCache.delete(e)||t}clear(){this.cache.clear(),this.oldCache.clear(),this._size=0}*keys(){for(const[e]of this)yield e}*values(){for(const[,e]of this)yield e}*[Symbol.iterator](){for(const e of this.cache)yield e;for(const e of this.oldCache){const[t]=e;this.cache.has(t)||(yield e)}}get size(){let e=0;for(const t of this.oldCache.keys())this.cache.has(t)||e++;return this._size+e}}var su={ALIGNMENT_MATCH:"M",INSERT:"I",DELETE:"D",SKIP:"N",CLIP_SOFT:"S",CLIP_HARD:"H",PAD:"P",SEQUENCE_MATCH:"=",SEQUENCE_MISMATCH:"X"};const ou=function(e,t){this.config=e,this.genome=t,this.url=e.url,this.filter=new Pd(e.filter),this.readGroupSetIds=e.readGroupSetIds,this.authKey=e.authKey,this.samplingWindowSize=void 0===e.samplingWindowSize?100:e.samplingWindowSize,this.samplingDepth=void 0===e.samplingDepth?1e3:e.samplingDepth,e.viewAsPairs?this.pairsSupported=!0:this.pairsSupported=void 0===e.pairsSupported||e.pairsSupported};ou.prototype.readAlignments=function(e,t,i){const n=this.genome,r=this;return(r.chrAliasTable?Promise.resolve(r.chrAliasTable):r.readMetadata().then((function(e){if(r.chrAliasTable={},n&&e.readGroups&&e.readGroups.length>0){var t=e.readGroups[0].referenceSetId;return t?Cc({url:r.url+"/references/search",body:{referenceSetId:t},decode:function(e){return e.references}}).then((function(e){return e.forEach((function(e){var t=e.name,i=n.getChromosomeName(t);r.chrAliasTable[i]=t})),r.chrAliasTable})):(function(e,t){var i;if("461916304629"===t||"337315832689"===t){for(i=1;i<23;i++)e["chr"+i]=i;e.chrX="X",e.chrY="Y",e.chrM="MT"}}(r.chrAliasTable,r.config.datasetId),r.chrAliasTable)}return r.chrAliasTable}))).then((function(n){var o=n.hasOwnProperty(e)?n[e]:e;return Cc({url:r.url+"/reads/search",body:{readGroupSetIds:[r.readGroupSetIds],referenceName:o,start:t,end:i,pageSize:"10000"},decode:s,results:new _d(e,t,i,r.config)})}));function s(e){var t,i,s,o,a,l=e.alignments,h=l.length,c=[];for(t=0;t<h;t++){let e=l[t];(i=new Md).readName=e.fragmentName,i.properPlacement=e.properPlacement,i.duplicateFragment=e.duplicateFragment,i.numberReads=e.numberReads,i.fragmentLength=e.fragmentLength,i.readNumber=e.readNumber,i.failedVendorQualityChecks=e.failedVendorQualityChecks,i.secondaryAlignment=e.secondaryAlignment,i.supplementaryAlignment=e.supplementaryAlignment,i.seq=e.alignedSequence,i.qual=e.alignedQuality,i.matePos=e.nextMatePosition,i.tagDict=e.info,i.flags=0,e.alignment?(i.mapped=!0,i.chr=e.alignment.position.referenceName,n&&(i.chr=n.getChromosomeName(i.chr)),i.start=parseInt(e.alignment.position.position),i.strand=!e.alignment.position.reverseStrand,i.mq=e.alignment.mappingQuality,i.cigar=d(e.alignment.cigar),s=u(e.alignment.cigar),i.lengthOnRef=s.lengthOnRef,a=f(i,s.array),i.blocks=a.blocks,i.insertions=a.insertions):i.mapped=!1,(o=e.nextMatePosition)&&(i.mate={chr:o.referenceFrame,position:parseInt(o.position),strand:!o.reverseStrand}),r.filter.pass(i)&&c.push(i)}return c;function d(e){var t="";return e.forEach((function(e){var i=su[e.operation],n=e.operationLength;t+=n+i})),t}function u(e){var t,i,n,r,s=0,o=[];for(r=0;r<e.length;r++)t=e[r],n=su[t.operation],i=parseInt(t.operationLength),"M"!==n&&"EQ"!==n&&"X"!==n&&"D"!==n&&"N"!==n&&"="!==n||(s+=i),o.push({len:i,ltr:n});return{lengthOnRef:s,array:o}}function f(e,t){for(var i,n,r,s=[],o=0,a=e.start,l=t.length,h=0;h<l;h++){var c=t[h];switch(c.ltr){case"H":case"P":break;case"S":o+=c.len,r="S";break;case"N":case"D":void 0===i&&(i=[]),i.push({start:a,len:c.len,type:c.ltr}),a+=c.len;break;case"I":void 0===n&&(n=[]),n.push(new Dd({start:a,len:c.len,seqOffset:o})),o+=c.len;break;case"M":case"EQ":case"=":case"X":s.push(new Dd({start:a,len:c.len,seqOffset:o,gapType:r})),o+=c.len,a+=c.len;break;default:console.log("Error processing cigar element: "+c.len+c.ltr)}}return{blocks:s,insertions:n,gaps:i}}}},ou.prototype.readMetadata=function(){return kc({url:this.url,entity:"readgroupsets",entityId:this.readGroupSetIds})};class au{constructor(e,t){const i=t.genome;if(this.config=e,this.genome=i,Ra(e.url)&&(this.config.indexed=!1),"ga4gh"===e.sourceType)this.bamReader=new ou(e,i);else if("pysam"===e.sourceType)this.bamReader=new Yd(e,i);else if("htsget"===e.sourceType)this.bamReader=new Jd(e,i);else if("shardedBam"===e.sourceType)this.bamReader=new Xd(e,i);else if("cram"===e.format)this.bamReader=new tu(e,i,t);else{if(!this.config.indexURL&&!1!==e.indexed)if($i(this.config.url)){const e=Ua(this.config.url,"bai");e?(console.error(`Warning: no indexURL specified for ${this.config.url}.  Guessing ${this.baiPath}`),this.config.indexURL=e):(console.error(`Warning: no indexURL specified for ${this.config.url}.`),this.config.indexed=!1)}else console.error(`Warning: no indexURL specified for ${this.config.name}.`),this.config.indexed=!1;!1!==this.config.indexed?this.bamReader=new Qd(e,i):this.bamReader=new Zd(e,i)}this.viewAsPairs=e.viewAsPairs,this.showSoftClips=e.showSoftClips}setViewAsPairs(e){this.viewAsPairs=e}setShowSoftClips(e){this.showSoftClips=e}async getAlignments(e,t,i){const n=this.genome,r=this.showSoftClips,s=await this.bamReader.readAlignments(e,t,i);let o=s.alignments;this.viewAsPairs||(o=wd([{alignments:o}]));const a=o.length>0;if(s.packedAlignmentRows=vd(o,s.start,s.end,r),this.alignmentContainer=s,a){const t=await n.sequence.getSequence(e,s.start,s.end);if(t)return s.coverageMap.refSeq=t,s.sequence=t,s;console.error("No sequence for: "+e+":"+s.start+"-"+s.end)}return s}}function lu(e,t,i){var n,r,s,o,a,l,h,c={font:"normal 10px Arial",textAlign:"right",strokeStyle:"black"};if(void 0===this.dataRange||void 0===this.dataRange.max||void 0===this.dataRange.min)return;let d=void 0!==this.flipAxis&&this.flipAxis;function u(e){return 0===e?"0":Math.abs(e)>=10?e.toFixed():Math.abs(e)>=1?e.toFixed(1):e.toFixed(2)}ya.fillRect(e,0,0,t,i,{fillStyle:"rgb(255, 255, 255)"}),n=(h=.95*t)-8,a={x:r=h,y:s=o=.01*i},ya.strokeLine(e,n,s,r,o,c),ya.fillText(e,u(d?this.dataRange.min:this.dataRange.max),n+4,s+12,c),l={x:r,y:s=o=.99*i},ya.strokeLine(e,n,s,r,o,c),ya.fillText(e,u(d?this.dataRange.max:this.dataRange.min),n+4,s-4,c),ya.strokeLine(e,a.x,a.y,l.x,l.y,c)}class hu{constructor({chr:e,start:t,end:i}){this.chr=e,this.start=t,this.end=i}contains(e){return e.chr===this.chr&&e.start>=this.start&&e.end<=this.end}overlaps(e){return e.chr===this.chr&&!(e.end<this.start||e.start>this.end)}extend(e){e.chr===this.chr&&(this.start=Math.min(e.start,this.start),this.end=Math.max(e.end,this.end))}getLocusString(){if("all"===this.chr)return"all";{const e=Wi(Math.floor(this.start)+1),t=Wi(Math.round(this.end));return`${this.chr}:${e}-${t}`}}static fromLocusString(e){if("all"===e)return new hu({chr:"all"});const t=e.split(":"),i=t[0],n=t[1].split("-"),r=Number.parseInt(n[0].replace(/,/g,""))-1,s=Number.parseInt(n[1].replace(/,/g,""));return new hu({chr:i,start:r,end:s})}}
+/*!
+ * vanilla-picker v2.12.1
+ * https://vanilla-picker.js.org
+ *
+ * Copyright 2017-2021 Andreas Borgen (https://github.com/Sphinxxxx), Adam Brooks (https://github.com/dissimulate)
+ * Released under the ISC license.
+ */var cu=function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")},du=function(){function e(e,t){for(var i=0;i<t.length;i++){var n=t[i];n.enumerable=n.enumerable||!1,n.configurable=!0,"value"in n&&(n.writable=!0),Object.defineProperty(e,n.key,n)}}return function(t,i,n){return i&&e(t.prototype,i),n&&e(t,n),t}}(),uu=function(e,t){if(Array.isArray(e))return e;if(Symbol.iterator in Object(e))return function(e,t){var i=[],n=!0,r=!1,s=void 0;try{for(var o,a=e[Symbol.iterator]();!(n=(o=a.next()).done)&&(i.push(o.value),!t||i.length!==t);n=!0);}catch(e){r=!0,s=e}finally{try{!n&&a.return&&a.return()}finally{if(r)throw s}}return i}(e,t);throw new TypeError("Invalid attempt to destructure non-iterable instance")};String.prototype.startsWith=String.prototype.startsWith||function(e){return 0===this.indexOf(e)},String.prototype.padStart=String.prototype.padStart||function(e,t){for(var i=this;i.length<e;)i=t+i;return i};var fu={cb:"0f8ff",tqw:"aebd7",q:"-ffff",qmrn:"7fffd4",zr:"0ffff",bg:"5f5dc",bsq:"e4c4",bck:"---",nch:"ebcd",b:"--ff",bvt:"8a2be2",brwn:"a52a2a",brw:"deb887",ctb:"5f9ea0",hrt:"7fff-",chcT:"d2691e",cr:"7f50",rnw:"6495ed",crns:"8dc",crms:"dc143c",cn:"-ffff",Db:"--8b",Dcn:"-8b8b",Dgnr:"b8860b",Dgr:"a9a9a9",Dgrn:"-64-",Dkhk:"bdb76b",Dmgn:"8b-8b",Dvgr:"556b2f",Drng:"8c-",Drch:"9932cc",Dr:"8b--",Dsmn:"e9967a",Dsgr:"8fbc8f",DsTb:"483d8b",DsTg:"2f4f4f",Dtrq:"-ced1",Dvt:"94-d3",ppnk:"1493",pskb:"-bfff",mgr:"696969",grb:"1e90ff",rbrc:"b22222",rwht:"af0",stg:"228b22",chs:"-ff",gnsb:"dcdcdc",st:"8f8ff",g:"d7-",gnr:"daa520",gr:"808080",grn:"-8-0",grnw:"adff2f",hnw:"0fff0",htpn:"69b4",nnr:"cd5c5c",ng:"4b-82",vr:"0",khk:"0e68c",vnr:"e6e6fa",nrb:"0f5",wngr:"7cfc-",mnch:"acd",Lb:"add8e6",Lcr:"08080",Lcn:"e0ffff",Lgnr:"afad2",Lgr:"d3d3d3",Lgrn:"90ee90",Lpnk:"b6c1",Lsmn:"a07a",Lsgr:"20b2aa",Lskb:"87cefa",LsTg:"778899",Lstb:"b0c4de",Lw:"e0",m:"-ff-",mgrn:"32cd32",nn:"af0e6",mgnt:"-ff",mrn:"8--0",mqm:"66cdaa",mmb:"--cd",mmrc:"ba55d3",mmpr:"9370db",msg:"3cb371",mmsT:"7b68ee","":"-fa9a",mtr:"48d1cc",mmvt:"c71585",mnLb:"191970",ntc:"5fffa",mstr:"e4e1",mccs:"e4b5",vjw:"dead",nv:"--80",c:"df5e6",v:"808-0",vrb:"6b8e23",rng:"a5-",rngr:"45-",rch:"da70d6",pgnr:"eee8aa",pgrn:"98fb98",ptrq:"afeeee",pvtr:"db7093",ppwh:"efd5",pchp:"dab9",pr:"cd853f",pnk:"c0cb",pm:"dda0dd",pwrb:"b0e0e6",prp:"8-080",cc:"663399",r:"--",sbr:"bc8f8f",rb:"4169e1",sbrw:"8b4513",smn:"a8072",nbr:"4a460",sgrn:"2e8b57",ssh:"5ee",snn:"a0522d",svr:"c0c0c0",skb:"87ceeb",sTb:"6a5acd",sTgr:"708090",snw:"afa",n:"-ff7f",stb:"4682b4",tn:"d2b48c",t:"-8080",thst:"d8bfd8",tmT:"6347",trqs:"40e0d0",vt:"ee82ee",whT:"5deb3",wht:"",hts:"5f5f5",w:"-",wgrn:"9acd32"};function pu(e){var t=arguments.length>1&&void 0!==arguments[1]?arguments[1]:1;return(t>0?e.toFixed(t).replace(/0+$/,"").replace(/\.$/,""):e.toString())||"0"}var gu=function(){function e(t,i,n,r){cu(this,e);var s=this;if(void 0===t);else if(Array.isArray(t))this.rgba=t;else if(void 0===n){var o=t&&""+t;o&&function(t){if(t.startsWith("hsl")){var i=t.match(/([\-\d\.e]+)/g).map(Number),n=uu(i,4),r=n[0],o=n[1],a=n[2],l=n[3];void 0===l&&(l=1),r/=360,o/=100,a/=100,s.hsla=[r,o,a,l]}else if(t.startsWith("rgb")){var h=t.match(/([\-\d\.e]+)/g).map(Number),c=uu(h,4),d=c[0],u=c[1],f=c[2],p=c[3];void 0===p&&(p=1),s.rgba=[d,u,f,p]}else t.startsWith("#")?s.rgba=e.hexToRgb(t):s.rgba=e.nameToRgb(t)||e.hexToRgb(t)}(o.toLowerCase())}else this.rgba=[t,i,n,void 0===r?1:r]}return du(e,[{key:"printRGB",value:function(e){var t=(e?this.rgba:this.rgba.slice(0,3)).map((function(e,t){return pu(e,3===t?3:0)}));return e?"rgba("+t+")":"rgb("+t+")"}},{key:"printHSL",value:function(e){var t=[360,100,100,1],i=["","%","%",""],n=(e?this.hsla:this.hsla.slice(0,3)).map((function(e,n){return pu(e*t[n],3===n?3:1)+i[n]}));return e?"hsla("+n+")":"hsl("+n+")"}},{key:"printHex",value:function(e){var t=this.hex;return e?t:t.substring(0,7)}},{key:"rgba",get:function(){if(this._rgba)return this._rgba;if(!this._hsla)throw new Error("No color is set");return this._rgba=e.hslToRgb(this._hsla)},set:function(e){3===e.length&&(e[3]=1),this._rgba=e,this._hsla=null}},{key:"rgbString",get:function(){return this.printRGB()}},{key:"rgbaString",get:function(){return this.printRGB(!0)}},{key:"hsla",get:function(){if(this._hsla)return this._hsla;if(!this._rgba)throw new Error("No color is set");return this._hsla=e.rgbToHsl(this._rgba)},set:function(e){3===e.length&&(e[3]=1),this._hsla=e,this._rgba=null}},{key:"hslString",get:function(){return this.printHSL()}},{key:"hslaString",get:function(){return this.printHSL(!0)}},{key:"hex",get:function(){return"#"+this.rgba.map((function(e,t){return t<3?e.toString(16):Math.round(255*e).toString(16)})).map((function(e){return e.padStart(2,"0")})).join("")},set:function(t){this.rgba=e.hexToRgb(t)}}],[{key:"hexToRgb",value:function(e){var t=(e.startsWith("#")?e.slice(1):e).replace(/^(\w{3})$/,"$1F").replace(/^(\w)(\w)(\w)(\w)$/,"$1$1$2$2$3$3$4$4").replace(/^(\w{6})$/,"$1FF");if(!t.match(/^([0-9a-fA-F]{8})$/))throw new Error("Unknown hex color; "+e);var i=t.match(/^(\w\w)(\w\w)(\w\w)(\w\w)$/).slice(1).map((function(e){return parseInt(e,16)}));return i[3]=i[3]/255,i}},{key:"nameToRgb",value:function(t){var i=t.toLowerCase().replace("at","T").replace(/[aeiouyldf]/g,"").replace("ght","L").replace("rk","D").slice(-5,4),n=fu[i];return void 0===n?n:e.hexToRgb(n.replace(/\-/g,"00").padStart(6,"f"))}},{key:"rgbToHsl",value:function(e){var t=uu(e,4),i=t[0],n=t[1],r=t[2],s=t[3];i/=255,n/=255,r/=255;var o=Math.max(i,n,r),a=Math.min(i,n,r),l=void 0,h=void 0,c=(o+a)/2;if(o===a)l=h=0;else{var d=o-a;switch(h=c>.5?d/(2-o-a):d/(o+a),o){case 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e._doRemove(t.target,t.type,t.handler)})),this._events=[]}}],[{key:"_doRemove",value:function(e,t,i){e.removeEventListener(t,i,!1)}}]),e}();function bu(e,t,i){var n=!1;function r(e,t,i){return Math.max(t,Math.min(e,i))}function s(e,s,o){if(o&&(n=!0),n){e.preventDefault();var a=t.getBoundingClientRect(),l=a.width,h=a.height,c=s.clientX,d=s.clientY,u=r(c-a.left,0,l),f=r(d-a.top,0,h);i(u/l,f/h)}}function o(e,t){1===(void 0===e.buttons?e.which:e.buttons)?s(e,e,t):n=!1}function a(e,t){1===e.touches.length?s(e,e.touches[0],t):n=!1}e.add(t,"mousedown",(function(e){o(e,!0)})),e.add(t,"touchstart",(function(e){a(e,!0)})),e.add(window,"mousemove",o),e.add(t,"touchmove",a),e.add(window,"mouseup",(function(e){n=!1})),e.add(t,"touchend",(function(e){n=!1})),e.add(t,"touchcancel",(function(e){n=!1}))}var wu="keydown",vu="mousedown",yu="focusin";function _u(e,t){return(t||document).querySelector(e)}function xu(e){e.preventDefault(),e.stopPropagation()}function ku(e,t,i,n,r){e.add(t,wu,(function(e){i.indexOf(e.key)>=0&&(r&&xu(e),n(e))}))}var Cu=function(){function e(t){cu(this,e),this.settings={popup:"right",layout:"default",alpha:!0,editor:!0,editorFormat:"hex",cancelButton:!1,defaultColor:"#0cf"},this._events=new mu,this.onChange=null,this.onDone=null,this.onOpen=null,this.onClose=null,this.setOptions(t)}return du(e,[{key:"setOptions",value:function(e){var t=this;if(e){var i=this.settings;if(e instanceof HTMLElement)i.parent=e;else{i.parent&&e.parent&&i.parent!==e.parent&&(this._events.remove(i.parent),this._popupInited=!1),function(e,t,i){for(var n in e)i&&i.indexOf(n)>=0||(t[n]=e[n])}(e,i),e.onChange&&(this.onChange=e.onChange),e.onDone&&(this.onDone=e.onDone),e.onOpen&&(this.onOpen=e.onOpen),e.onClose&&(this.onClose=e.onClose);var n=e.color||e.colour;n&&this._setColor(n)}var r=i.parent;if(r&&i.popup&&!this._popupInited){var s=function(e){return t.openHandler(e)};this._events.add(r,"click",s),ku(this._events,r,[" ","Spacebar","Enter"],s),this._popupInited=!0}else e.parent&&!i.popup&&this.show()}}},{key:"openHandler",value:function(e){if(this.show()){e&&e.preventDefault(),this.settings.parent.style.pointerEvents="none";var t=e&&e.type===wu?this._domEdit:this.domElement;setTimeout((function(){return t.focus()}),100),this.onOpen&&this.onOpen(this.colour)}}},{key:"closeHandler",value:function(e){var t=e&&e.type,i=!1;if(e)if(t===vu||t===yu){var n=(this.__containedEvent||0)+100;e.timeStamp>n&&(i=!0)}else xu(e),i=!0;else i=!0;i&&this.hide()&&(this.settings.parent.style.pointerEvents="",t!==vu&&this.settings.parent.focus(),this.onClose&&this.onClose(this.colour))}},{key:"movePopup",value:function(e,t){this.closeHandler(),this.setOptions(e),t&&this.openHandler()}},{key:"setColor",value:function(e,t){this._setColor(e,{silent:t})}},{key:"_setColor",value:function(e,t){if("string"==typeof e&&(e=e.trim()),e){t=t||{};var i=void 0;try{i=new gu(e)}catch(e){if(t.failSilently)return;throw e}if(!this.settings.alpha){var n=i.hsla;n[3]=1,i.hsla=n}this.colour=this.color=i,this._setHSLA(null,null,null,null,t)}}},{key:"setColour",value:function(e,t){this.setColor(e,t)}},{key:"show",value:function(){if(!this.settings.parent)return!1;if(this.domElement){var e=this._toggleDOM(!0);return this._setPosition(),e}var t=function(e){var t=document.createElement("div");return t.innerHTML=e,t.firstElementChild}(this.settings.template||'<div class="picker_wrapper" tabindex="-1"><div class="picker_arrow"></div><div class="picker_hue picker_slider"><div class="picker_selector"></div></div><div class="picker_sl"><div class="picker_selector"></div></div><div class="picker_alpha picker_slider"><div class="picker_selector"></div></div><div class="picker_editor"><input aria-label="Type a color name or hex value"/></div><div class="picker_sample"></div><div class="picker_done"><button>Ok</button></div><div class="picker_cancel"><button>Cancel</button></div></div>');return this.domElement=t,this._domH=_u(".picker_hue",t),this._domSL=_u(".picker_sl",t),this._domA=_u(".picker_alpha",t),this._domEdit=_u(".picker_editor input",t),this._domSample=_u(".picker_sample",t),this._domOkay=_u(".picker_done button",t),this._domCancel=_u(".picker_cancel button",t),t.classList.add("layout_"+this.settings.layout),this.settings.alpha||t.classList.add("no_alpha"),this.settings.editor||t.classList.add("no_editor"),this.settings.cancelButton||t.classList.add("no_cancel"),this._ifPopup((function(){return t.classList.add("popup")})),this._setPosition(),this.colour?this._updateUI():this._setColor(this.settings.defaultColor),this._bindEvents(),!0}},{key:"hide",value:function(){return this._toggleDOM(!1)}},{key:"destroy",value:function(){this._events.destroy(),this.domElement&&this.settings.parent.removeChild(this.domElement)}},{key:"_bindEvents",value:function(){var e=this,t=this,i=this.domElement,n=this._events;function r(e,t,i){n.add(e,t,i)}r(i,"click",(function(e){return e.preventDefault()})),bu(n,this._domH,(function(e,i){return t._setHSLA(e)})),bu(n,this._domSL,(function(e,i){return t._setHSLA(null,e,1-i)})),this.settings.alpha&&bu(n,this._domA,(function(e,i){return t._setHSLA(null,null,null,1-i)}));var s=this._domEdit;r(s,"input",(function(e){t._setColor(this.value,{fromEditor:!0,failSilently:!0})})),r(s,"focus",(function(e){var t=this;t.selectionStart===t.selectionEnd&&t.select()})),this._ifPopup((function(){var t=function(t){return e.closeHandler(t)};r(window,vu,t),r(window,yu,t),ku(n,i,["Esc","Escape"],t);var s=function(t){e.__containedEvent=t.timeStamp};r(i,vu,s),r(i,yu,s),r(e._domCancel,"click",t)}));var o=function(t){e._ifPopup((function(){return e.closeHandler(t)})),e.onDone&&e.onDone(e.colour)};r(this._domOkay,"click",o),ku(n,i,["Enter"],o)}},{key:"_setPosition",value:function(){var e=this.settings.parent,t=this.domElement;e!==t.parentNode&&e.appendChild(t),this._ifPopup((function(i){"static"===getComputedStyle(e).position&&(e.style.position="relative");var n=!0===i?"popup_right":"popup_"+i;["popup_top","popup_bottom","popup_left","popup_right"].forEach((function(e){e===n?t.classList.add(e):t.classList.remove(e)})),t.classList.add(n)}))}},{key:"_setHSLA",value:function(e,t,i,n,r){r=r||{};var s=this.colour,o=s.hsla;[e,t,i,n].forEach((function(e,t){(e||0===e)&&(o[t]=e)})),s.hsla=o,this._updateUI(r),this.onChange&&!r.silent&&this.onChange(s)}},{key:"_updateUI",value:function(e){if(this.domElement){e=e||{};var t=this.colour,i=t.hsla,n="hsl("+360*i[0]+", 100%, 50%)",r=t.hslString,s=t.hslaString,o=this._domH,a=this._domSL,l=this._domA,h=_u(".picker_selector",o),c=_u(".picker_selector",a),d=_u(".picker_selector",l);w(0,h,i[0]),this._domSL.style.backgroundColor=this._domH.style.color=n,w(0,c,i[1]),v(0,c,1-i[2]),a.style.color=r,v(0,d,1-i[3]);var u=r,f=u.replace("hsl","hsla").replace(")",", 0)"),p="linear-gradient("+[u,f]+")";if(this._domA.style.background=p+", linear-gradient(45deg, lightgrey 25%, transparent 25%, transparent 75%, lightgrey 75%) 0 0 / 2em 2em,\n                   linear-gradient(45deg, lightgrey 25%,       white 25%,       white 75%, lightgrey 75%) 1em 1em / 2em 2em",!e.fromEditor){var g=this.settings.editorFormat,m=this.settings.alpha,b=void 0;switch(g){case"rgb":b=t.printRGB(m);break;case"hsl":b=t.printHSL(m);break;default:b=t.printHex(m)}this._domEdit.value=b}this._domSample.style.color=s}function w(e,t,i){t.style.left=100*i+"%"}function v(e,t,i){t.style.top=100*i+"%"}}},{key:"_ifPopup",value:function(e,t){this.settings.parent&&this.settings.popup?e&&e(this.settings.popup):t&&t()}},{key:"_toggleDOM",value:function(e){var t=this.domElement;if(!t)return!1;var i=e?"":"none",n=t.style.display!==i;return n&&(t.style.display=i),n}}]),e}(),Su=document.createElement("style");function Au(e){if(Eu[e])return Eu[e];if(Eu["chr"+e]){const t=Eu["chr"+e];return Eu[e]=t,t}{const r=(t=Math.round(255*Math.random()).toString(10),i=Math.round(255*Math.random()).toString(10),n=Math.round(255*Math.random()).toString(10),"rgb("+t+","+i+","+n+")");return Eu[e]=r,r}var t,i,n}Su.textContent='.picker_wrapper.no_alpha .picker_alpha{display:none}.picker_wrapper.no_editor .picker_editor{position:absolute;z-index:-1;opacity:0}.picker_wrapper.no_cancel .picker_cancel{display:none}.layout_default.picker_wrapper{display:flex;flex-flow:row wrap;justify-content:space-between;align-items:stretch;font-size:10px;width:25em;padding:.5em}.layout_default.picker_wrapper input,.layout_default.picker_wrapper button{font-size:1rem}.layout_default.picker_wrapper>*{margin:.5em}.layout_default.picker_wrapper::before{content:"";display:block;width:100%;height:0;order:1}.layout_default .picker_slider,.layout_default .picker_selector{padding:1em}.layout_default .picker_hue{width:100%}.layout_default .picker_sl{flex:1 1 auto}.layout_default .picker_sl::before{content:"";display:block;padding-bottom:100%}.layout_default .picker_editor{order:1;width:6.5rem}.layout_default .picker_editor input{width:100%;height:100%}.layout_default .picker_sample{order:1;flex:1 1 auto}.layout_default .picker_done,.layout_default .picker_cancel{order:1}.picker_wrapper{box-sizing:border-box;background:#f2f2f2;box-shadow:0 0 0 1px silver;cursor:default;font-family:sans-serif;color:#444;pointer-events:auto}.picker_wrapper:focus{outline:none}.picker_wrapper button,.picker_wrapper input{box-sizing:border-box;border:none;box-shadow:0 0 0 1px silver;outline:none}.picker_wrapper button:focus,.picker_wrapper button:active,.picker_wrapper input:focus,.picker_wrapper input:active{box-shadow:0 0 2px 1px #1e90ff}.picker_wrapper button{padding:.4em .6em;cursor:pointer;background-color:#f5f5f5;background-image:linear-gradient(0deg, gainsboro, transparent)}.picker_wrapper button:active{background-image:linear-gradient(0deg, transparent, gainsboro)}.picker_wrapper button:hover{background-color:#fff}.picker_selector{position:absolute;z-index:1;display:block;-webkit-transform:translate(-50%, -50%);transform:translate(-50%, -50%);border:2px solid #fff;border-radius:100%;box-shadow:0 0 3px 1px #67b9ff;background:currentColor;cursor:pointer}.picker_slider .picker_selector{border-radius:2px}.picker_hue{position:relative;background-image:linear-gradient(90deg, red, yellow, lime, cyan, blue, magenta, red);box-shadow:0 0 0 1px silver}.picker_sl{position:relative;box-shadow:0 0 0 1px silver;background-image:linear-gradient(180deg, white, rgba(255, 255, 255, 0) 50%),linear-gradient(0deg, black, rgba(0, 0, 0, 0) 50%),linear-gradient(90deg, #808080, rgba(128, 128, 128, 0))}.picker_alpha,.picker_sample{position:relative;background:linear-gradient(45deg, lightgrey 25%, transparent 25%, transparent 75%, lightgrey 75%) 0 0/2em 2em,linear-gradient(45deg, lightgrey 25%, white 25%, white 75%, lightgrey 75%) 1em 1em/2em 2em;box-shadow:0 0 0 1px silver}.picker_alpha .picker_selector,.picker_sample .picker_selector{background:none}.picker_editor input{font-family:monospace;padding:.2em .4em}.picker_sample::before{content:"";position:absolute;display:block;width:100%;height:100%;background:currentColor}.picker_arrow{position:absolute;z-index:-1}.picker_wrapper.popup{position:absolute;z-index:2;margin:1.5em}.picker_wrapper.popup,.picker_wrapper.popup .picker_arrow::before,.picker_wrapper.popup .picker_arrow::after{background:#f2f2f2;box-shadow:0 0 10px 1px rgba(0,0,0,.4)}.picker_wrapper.popup .picker_arrow{width:3em;height:3em;margin:0}.picker_wrapper.popup .picker_arrow::before,.picker_wrapper.popup .picker_arrow::after{content:"";display:block;position:absolute;top:0;left:0;z-index:-99}.picker_wrapper.popup .picker_arrow::before{width:100%;height:100%;-webkit-transform:skew(45deg);transform:skew(45deg);-webkit-transform-origin:0 100%;transform-origin:0 100%}.picker_wrapper.popup .picker_arrow::after{width:150%;height:150%;box-shadow:none}.popup.popup_top{bottom:100%;left:0}.popup.popup_top .picker_arrow{bottom:0;left:0;-webkit-transform:rotate(-90deg);transform:rotate(-90deg)}.popup.popup_bottom{top:100%;left:0}.popup.popup_bottom .picker_arrow{top:0;left:0;-webkit-transform:rotate(90deg) scale(1, -1);transform:rotate(90deg) scale(1, -1)}.popup.popup_left{top:0;right:100%}.popup.popup_left .picker_arrow{top:0;right:0;-webkit-transform:scale(-1, 1);transform:scale(-1, 1)}.popup.popup_right{top:0;left:100%}.popup.popup_right .picker_arrow{top:0;left:0}',document.documentElement.firstElementChild.appendChild(Su),Cu.StyleElement=Su;const Eu={chrX:"rgb(204, 153, 0)",chrY:"rgb(153, 204, 0",chrUn:"rgb(50, 50, 50)",chr1:"rgb(80, 80, 255)",chrI:"rgb(139, 155, 187)",chr2:"rgb(206, 61, 50)",chrII:"rgb(206, 61, 50)",chr2a:"rgb(216, 71, 60)",chr2b:"rgb(226, 81, 70)",chr3:"rgb(116, 155, 88)",chrIII:"rgb(116, 155, 88)",chr4:"rgb(240, 230, 133)",chrIV:"rgb(240, 230, 133)",chr5:"rgb(70, 105, 131)",chr6:"rgb(186, 99, 56)",chr7:"rgb(93, 177, 221)",chr8:"rgb(128, 34, 104)",chr9:"rgb(107, 215, 107)",chr10:"rgb(213, 149, 167)",chr11:"rgb(146, 72, 34)",chr12:"rgb(131, 123, 141)",chr13:"rgb(199, 81, 39)",chr14:"rgb(213, 143, 92)",chr15:"rgb(122, 101, 165)",chr16:"rgb(228, 175, 105)",chr17:"rgb(59, 27, 83)",chr18:"rgb(205, 222, 183)",chr19:"rgb(97, 42, 121)",chr20:"rgb(174, 31, 99)",chr21:"rgb(231, 199, 111)",chr22:"rgb(90, 101, 94)",chr23:"rgb(204, 153, 0)",chr24:"rgb(153, 204, 0)",chr25:"rgb(51, 204, 0)",chr26:"rgb(0, 204, 51)",chr27:"rgb(0, 204, 153)",chr28:"rgb(0, 153, 204)",chr29:"rgb(10, 71, 255)",chr30:"rgb(71, 117, 255)",chr31:"rgb(255, 194, 10)",chr32:"rgb(255, 209, 71)",chr33:"rgb(153, 0, 51)",chr34:"rgb(153, 26, 0)",chr35:"rgb(153, 102, 0)",chr36:"rgb(128, 153, 0)",chr37:"rgb(51, 153, 0)",chr38:"rgb(0, 153, 26)",chr39:"rgb(0, 153, 102)",chr40:"rgb(0, 128, 153)",chr41:"rgb(0, 51, 153)",chr42:"rgb(26, 0, 153)",chr43:"rgb(102, 0, 153)",chr44:"rgb(153, 0, 128)",chr45:"rgb(214, 0, 71)",chr46:"rgb(255, 20, 99)",chr47:"rgb(0, 214, 143)",chr48:"rgb(20, 255, 177)"};class Tu{constructor(e){this.tracks=[],this.chordSets=[]}addChordSet(e){this.chordSets=this.chordSets.filter((t=>t.name!==e.name)),this.chordSets.push(e);let t=this.tracks.find((t=>e.trackName===t.name));t&&(t.chordSets=t.chordSets.filter((t=>t.name!==e.name)),t.chordSets.push(e)),t||(t=new Mu(e),this.tracks.push(t))}clearChords(){this.tracks=[],this.chordSets=[]}getTrack(e){return this.tracks.find((t=>e===t.name))}getChordSet(e){return this.chordSets.find((t=>e===t.name))}}class Mu{constructor(e){this.name=e.trackName,this.color=e.trackColor,this.visible=!0,this.chordSets=[e],this.id=("0000"+(Math.random()*Math.pow(36,4)<<0).toString(36)).slice(-4)}get chords(){if(1===this.chordSets.length)return this.chordSets[0].chords;const e=[];for(let t of this.chordSets)for(let i of t.chords)e.push(i);return e}}const Ru=Math.exp(5);class Lu{static isInstalled(){return void 0!==window.JBrowseReactCircularGenomeView&&void 0!==window.React&&void 0!==window.ReactDOM}constructor(e,t){if(t=t||{},this.config=t,Lu.isInstalled()){this.parent=e,this.groupByTrack=!0===t.groupByTrack,this.chordManager=new Tu(t);const i=document.createElement("div");i.className="igv-circview-container",e.appendChild(i),this.createControls(i),this.resetControlPanel();const n=document.createElement("div");n.className="igv-circview-circular-genome-view",i.appendChild(n),this.container=n,t.assembly&&this.setAssembly(t.assembly),this.width=t.width||500,this.height=t.height||500,this.setSize(this.width,this.height)}else console.error("JBrowse circular view is not installed")}createControls(e){const t=document.createElement("div");t.className="igv-circview-toolbar",e.appendChild(t),this.toolbar=t;const i=document.createElement("div");i.className="igv-circview-track-panel",e.appendChild(i),this.controlPanel=i,this.controlPanel.style.display="none";const n=document.createElement("div");n.className="igv-circview-toolbar-button-container",this.toolbar.appendChild(n),this.showControlsButton=document.createElement("div"),this.showControlsButton.className="igv-circview-button",n.appendChild(this.showControlsButton),this.showControlsButton.innerText="none"===this.controlPanel.style.display?"Show Controls":"Hide Controls",this.showControlsButton.addEventListener("click",(e=>{this.controlPanel.querySelectorAll("div").length>0&&("none"===this.controlPanel.style.display?(this.controlPanel.style.display="flex",e.target.innerText="Hide Controls"):(this.controlPanel.style.display="none",e.target.innerText="Show Controls"))}));let r=document.createElement("div");r.className="igv-circview-button",n.appendChild(r),r.innerText="Clear All",r.addEventListener("click",(()=>{this.clearChords()})),!1!==this.config.showCloseButton&&(r=document.createElement("div"),r.className="igv-circview-button",n.appendChild(r),r.innerText="Close",r.addEventListener("click",(()=>{this.visible=!1})))}resetControlPanel(){this.controlPanel.innerHTML="",this.controlPanel.appendChild(this.createGroupByCB());const e=this.groupByTrack?this.chordManager.tracks:this.chordManager.chordSets;for(let t of e)this.addToControlPanel(t)}createGroupByCB(){const e=document.createElement("input");e.type="checkbox",e.id="groupByCB",e.style.width="1.4em",e.style.height="1.4em",e.checked=this.groupByTrack,e.onclick=e=>{this.groupByTrack=e.target.checked,this.resetControlPanel(),this.render()};const t=document.createElement("label");t.for="groupByCB",t.innerText="Group by track",t.style.color="black",t.style.paddingLeft="10px";const i=document.createElement("div");return i.style.width="100%",i.style.paddingTop="5px",i.style.paddingBottom="5px",i.style.background="rgb(216, 230, 234)",i.appendChild(e),i.appendChild(t),i}addToControlPanel(e){const t=document.createElement("div");this.controlPanel.appendChild(t);const i=document.createElement("div");i.className="igv-circview-button",t.appendChild(i),i.innerText=!0===e.visible?"Hide":"Show",i.addEventListener("click",(t=>{!0===e.visible?(this.hideChordSet(e.name),t.target.innerText="Show"):(this.showChordSet(e.name),t.target.innerText="Hide")}));const n=document.createElement("input"),r=e=>200*Math.log(e*Ru),s=document.createElement("div");s.className="igv-circview-button",s.innerHTML="&nbsp;&nbsp;&nbsp;&nbsp;",t.appendChild(s),s.style.backgroundColor=Iu(e.color,1);const o={parent:s,popup:"right",editorFormat:"rgb",color:e.color,onChange:({rgbaString:t})=>{s.style.backgroundColor=Iu(t,1),this.setColor(e.name,t),n.value=r(Nu(e.color))}},a=new Cu(o);n.setAttribute("title","Adjust transparency of arcs"),n.type="range",n.style.width="100px",n.style.marginRight="10px",n.setAttribute("class","range"),n.setAttribute("min","0"),n.setAttribute("max","1000"),n.value=r(Nu(e.color)),n.oninput=()=>{const t=(i=n.value,Math.exp(i/200)/Ru);var i;this.setColor(e.name,Iu(e.color,t)),a.setColor(e.color)},t.appendChild(n);const l=document.createElement("div");l.style.color="black",t.appendChild(l),l.innerText=l.title=e.name}setAssembly(e){const t=this.genomeId||Ou();if(this.genomeId===t)return;this.chordManager.clearChords(),this.genomeId=t,this.chrNames=new Set(e.chromosomes.map((e=>Fu(e.name))));const i=[],n=[];for(let t of e.chromosomes){const e=Fu(t.name);n.push(t.color||Au(e)),i.push({refName:e,uniqueId:e,start:0,end:t.bpLength})}this.assembly={name:e.name,sequence:{trackId:t,type:"ReferenceSequenceTrack",adapter:{type:"FromConfigSequenceAdapter",features:i}},refNameColors:n},this.render()}addChords(e,t={}){const i=t.name||t.track||"*",n=i.split(" ")[0].replaceAll("%20"," "),r={name:i.replaceAll("%20"," "),trackName:n,chords:e,color:t.color||"black",trackColor:t.trackColor||t.color||"black",visible:!0,id:t.id||Ou()};this.chordManager.addChordSet(r),this.resetControlPanel(),this.render()}setSize(e,t){if(t=t||e,this.width=e,this.height=t,this.viewState){const i=this.viewState.session.view;i.setWidth(e),i.setHeight(t),i.setBpPerPx(i.minBpPerPx)}}getSize(){return Math.min(this.width,this.height)}clearChords(){this.chordManager.clearChords(),this.resetControlPanel(),this.render()}clearSelection(){this.viewState.pluginManager.rootModel.session.clearSelection()}show(){this.parent.style.display="block"}hide(){this.parent.style.display="none"}get visible(){return"none"!==this.parent.style.display}set visible(e){this.parent.style.display=e?"block":"none"}hideChordSet(e){let t=this.getChordSet(e);t?(t.visible=!1,this.render()):console.warn(`No track with name: ${name}`)}showChordSet(e){let t=this.getChordSet(e);t?(t.visible=!0,this.render()):console.warn(`No track with name: ${e}`)}deleteTrack(e){let t=this.tracks.findIndex((t=>e===t.name));t>=0&&this.tracks.splice(t,1),this.render()}getChordSet(e){return this.groupByTrack?this.chordManager.getTrack(e):this.chordManager.getChordSet(e)}setColor(e,t){const i=this.getChordSet(e);if(i){i.color=t;const e=i.id;for(let i of this.viewState.config.tracks)if(e===i.trackId){i.displays[0].renderer.strokeColor.set(t);break}}}render(){const{createViewState:e,JBrowseCircularGenomeView:t}=JBrowseReactCircularGenomeView;ReactDOM.unmountComponentAtNode(this.container);const i=(this.groupByTrack?this.chordManager.tracks:this.chordManager.chordSets).filter((e=>e.visible)),n=[],r=[];for(let e of i)n.push({trackId:e.id,name:e.name,assemblyNames:["forIGV"],type:"VariantTrack",adapter:{type:"FromConfigAdapter",features:e.chords}}),r.push(e.color);this.viewState=e({assembly:this.assembly,tracks:n});for(let e=0;e<i.length;e++)this.viewState.config.tracks[e].displays[0].renderer.strokeColor.set(r[e]);this.element=React.createElement(t,{viewState:this.viewState}),this.setSize(this.width,this.height),ReactDOM.render(this.element,this.container);const s=this.config.onChordClick||Bu;for(let e=0;e<i.length;e++)this.viewState.session.view.showTrack(this.viewState.config.tracks[e].trackId),s&&(this.viewState.pluginManager.jexl.addFunction("onChordClick",s),this.viewState.config.tracks[e].displays[0].onChordClick.set("jexl:onChordClick(feature, track, pluginManager)"))}}function Iu(e,t){const[i,n,r,s]=e.split(",");return`${i},${n},${r},${t})`}function Nu(e){return e.startsWith("rgba(")?Number(e.split(",")[3].replace(")","")):1}function Fu(e){return e.startsWith("chr")?e.substring(3):e}function Bu(e,t,i){console.log(e)}function Ou(){return("0000"+(Math.random()*Math.pow(36,4)<<0).toString(36)).slice(-4)}if("undefined"!=typeof document){function zi(e){for(let t of document.styleSheets)if(t=t.href?t.href.replace(/^.*[\\\/]/,""):"",t===e)return!0;return!1}zi("circular-view.css")||function(){const e=document.createElement("style");e.setAttribute("type","text/css"),e.innerHTML='.igv-circview-container {\n  width: fit-content;\n  height: fit-content;\n  box-sizing: content-box;\n  color: dimgray;\n  font-family: "Open Sans", sans-serif;\n  font-size: 12px;\n  background-color: white;\n  border-color: dimgray;\n  border-style: solid;\n  border-width: thin;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n}\n\n.igv-circview-toolbar {\n  position: relative;\n  width: 100%;\n  height: 32px;\n  background-color: lightgrey;\n  border-bottom-style: solid;\n  border-bottom-color: dimgray;\n  border-bottom-width: thin;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n}\n\n.igv-circview-toolbar-button-container {\n  height: 100%;\n  width: fit-content;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-circview-toolbar-button-container > div {\n  margin: 4px;\n}\n\n.igv-circview-track-panel {\n  z-index: 1024;\n  position: absolute;\n  top: 33px;\n  left: 0;\n  width: 100%;\n  height: fit-content;\n  border-bottom-style: solid;\n  border-bottom-color: dimgray;\n  border-bottom-width: thin;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n}\n.igv-circview-track-panel > div {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-circview-track-panel > div > div {\n  margin: 4px;\n}\n\n.igv-circview-swatch-button {\n  cursor: pointer;\n  padding: 5px;\n  width: 8px;\n  height: 8px;\n  border: 1px solid #8d8b8b;\n  border-radius: 16px;\n}\n\n.igv-circview-button {\n  cursor: pointer;\n  padding: 5px;\n  color: #444;\n  vertical-align: middle;\n  text-align: center;\n  font-family: "Open Sans", sans-serif;\n  font-size: 12px;\n  border: 1px solid #8d8b8b;\n  border-radius: 4px;\n  background: #efefef;\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.2);\n}\n\n.igv-circview-button:hover {\n  background: #efefef;\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.6);\n}\n\n.igv-circview-button:active {\n  color: #007bff;\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.6);\n}\n\n/*# sourceMappingURL=circular-view.css.map */\n',document.head.insertBefore(e,document.head.childNodes[document.head.childNodes.length-1])}()}const Du=e=>e.startsWith("chr")?e.substring(3):e;function Pu(e){const t=[],i=[];for(let n of e.wgChromosomeNames){const r=e.getChromosome(n);i.push(ff(r.name)),t.push({name:r.name,bpLength:r.bpLength})}return t}function zu(e,t,i,n){const r=t.color||"rgb(0,0,255)",s=Do.addAlpha("all"===i.chr?r:ff(i.chr),n),o=Do.addAlpha(r,n),a=t.name.replaceAll(" ","%20"),l="all"===i.chr?a:`${a}  ${i.chr}:${i.start}-${i.end}`;t.browser.circularView.addChords(e,{track:l,color:s,trackColor:o}),t.browser.circularViewVisible||(t.browser.circularViewVisible=!0)}class Hu{constructor(e,{minTLENPercentile:t,maxTLENPercentile:i}){this.totalCount=0,this.frCount=0,this.rfCount=0,this.ffCount=0,this.sumF=0,this.sumF2=0,this.lp=void 0===t?.1:t,this.up=void 0===i?99.5:i,this.isizes=[],this.compute(e)}compute(e){for(let n of e)if(n.isProperPair()){var t=Math.abs(n.fragmentLength);this.sumF+=t,this.sumF2+=t*t,this.isizes.push(t);var i=n.pairOrientation;if("string"==typeof i&&4===i.length)switch(""+i.charAt(0)+i.charAt(2)){case"FF":case"RR":this.ffCount++;break;case"FR":this.frCount++;break;case"RF":this.rfCount++}this.totalCount++}this.ffCount/this.totalCount>.9?this.orienation="ff":this.frCount/this.totalCount>.9?this.orienation="fr":this.rfCount/this.totalCount>.9&&(this.orienation="rf"),this.minTLEN=0===this.lp?0:Uu(this.isizes,this.lp),this.maxTLEN=Uu(this.isizes,this.up)}}function Uu(e,t){if(0!==e.length){var i=Math.floor(e.length*(t/100));return e.sort((function(e,t){return e-t})),e[i]}}const Vu={getTissueInfo:function(e,t){let i=(t=t||"https://gtexportal.org/rest/v1")+"/dataset/tissueInfo?datasetId="+(e=e||"gtex_v8");return ta.loadJson(i,{})},trackConfiguration:function(e,t){return{type:"eqtl",sourceType:"gtex-ws",url:(t=t||"https://gtexportal.org/rest/v1")+"/association/singleTissueEqtlByLocation",tissueSiteDetailId:e.tissueSiteDetailId,name:e.tissueSiteDetailId.split("_").join(" "),visibilityWindow:25e4}}};function qu(e,t,i){let n=(e.start-t)/i,r=(e.end-t)/i,s=r-n;return s<3&&(s=3,n-=1.5),{px:n,px1:r,pw:s}}function ju(e,t,i,n,r,s){try{r.save(),r.fillStyle=this.color,r.strokeStyle=this.color;const n=this.getColorForFeature(e);let o,a;r.fillStyle=n,r.strokeStyle=n,"SQUISHED"===this.displayMode&&void 0!==e.row?(o=this.featureHeight/2,a=this.margin+this.squishedRowHeight*e.row):"EXPANDED"===this.displayMode&&void 0!==e.row?(o=this.featureHeight,a=this.margin+this.expandedRowHeight*e.row):(o=this.featureHeight,a=this.margin);const l=s.pixelWidth,h=a+o/2,c=o/2,d=h-c/2,u=e.exons?e.exons.length:0,f=qu(e,t,i),p=this.arrowSpacing,g="+"===e.strand?1:"-"===e.strand?-1:0;if(0===u){const e=Math.max(0,f.px),t=Math.min(l,f.px1),i=t-e;if(r.fillRect(e,a,i,o),0!==g){r.fillStyle="white",r.strokeStyle="white";for(let i=e+p/2;i<t;i+=p)ya.strokeLine(r,i-2*g,h-2,i,h),ya.strokeLine(r,i-2*g,h+2,i,h);r.fillStyle=n,r.strokeStyle=n}}else{ya.strokeLine(r,f.px+1,h,f.px1-1,h);const s=Math.max(0,f.px)+p/2,m=Math.min(l,f.px1);for(let e=s;e<m;e+=p)ya.strokeLine(r,e-2*g,h-2,e,h),ya.strokeLine(r,e-2*g,h+2,e,h);for(let s=0;s<u;s++){const u=e.exons[s];let f,m=Math.round((u.start-t)/i),b=Math.round((u.end-t)/i),w=Math.max(1,b-m);if(!(m+w<0)){if(m>l)break;if(u.utr)r.fillRect(m,d,w,c);else if(u.cdStart&&(f=Math.round((u.cdStart-t)/i),r.fillRect(m,d,f-m,c),w-=f-m,m=f),u.cdEnd&&(f=Math.round((u.cdEnd-t)/i),r.fillRect(f,d,b-f,c),w-=b-f,b=f),w=Math.max(w,1),r.fillRect(m,a,w,o),w>p+5&&0!==g){r.fillStyle="white",r.strokeStyle="white";for(let e=m+p/2;e<b;e+=p)ya.strokeLine(r,e-2*g,h-2,e,h),ya.strokeLine(r,e-2*g,h+2,e,h);r.fillStyle=n,r.strokeStyle=n}}}}s.drawLabel&&"SQUISHED"!==this.displayMode&&$u.call(this,r,e,f.px,f.px1,a,s.referenceFrame,s)}finally{r.restore()}}function $u(e,t,i,n,r,s,o){try{e.save();let a=t.name;if(void 0===a&&t.gene&&(a=t.gene.name),void 0===a&&(a=t.id||t.ID),!a||"."===a)return;let l=o.pixelXOffset||0;const h=Math.max(i,-l);let c,d=(h+Math.min(n,-l+o.viewportWidth))/2;"COLLAPSED"===this.displayMode&&"SLANT"===this.labelDisplayMode&&(c={rotate:{angle:45}});const u=function(e,t){return t?e+20:e+25}(r,c);let f,p=this.getColorForFeature(t),g=!1;s.selection&&Vu.gtexLoaded&&(g=!0,f=s.selection.colorForGene(a));const m={textAlign:"SLANT"===this.labelDisplayMode?void 0:"center",fillStyle:f||p,strokeStyle:f||p},b=e.measureText(a),w=d-b.width/2,v=d+b.width/2,y=o.rowLastLabelX[t.row]||-Number.MAX_SAFE_INTEGER;(o.labelAllFeatures||w>y||g)&&(o.rowLastLabelX[t.row]=v,"y"===o.axis?(e.save(),ya.labelTransformWithContext(e,d),ya.fillText(e,a,d,u,m,c),e.restore()):ya.fillText(e,a,d,u,m,c))}finally{e.restore()}}const Wu=new Set(["nonsense","missense","stop-loss","frameshift","cds-indel"]),Gu=new Set(["coding-synon"]),Zu=new Set(["splice-3","splice-5"]),Qu=new Set(["untranslated-5","untranslated-3"]);function Xu(e,t,i,n,r){var s,o,a,l,h,c,d=qu(e,t,i),u=this.margin,f=this.snpColors.length;switch(s="squished"===this.displayMode?this.squishedRowHeight:this.expandedRowHeight,this.colorBy){case"function":l=e.func,c=l.split(","),h=c.map((function(e){return Wu.has(e)||Zu.has(e)?f-1:Gu.has(e)?f-2:Qu.has(e)?f-3:0})),o=h.reduce((function(e,t){return Math.max(e,t)}));break;case"class":o="deletion"===(a=e.class)?f-1:"mnp"===a?f-2:"microsatellite"===a||"named"===a?f-3:0}r.fillStyle=this.snpColors[o],r.fillRect(d.px,u,d.pw,s)}function Yu(e,t,i,n,r){const s="EXPANDED"===this.displayMode?this.expandedRowHeight:this.squishedRowHeight;let o=this.margin;"COLLAPSED"!==this.displayMode&&void 0!==e.row&&(o+=e.row*s);const a=o+.5*s,l=a-.5*s,h=a+.5*s,c=Math.round((e.junction_left-t)/i),d=Math.round((e.junction_right-t)/i);r.beginPath(),r.moveTo(c,a),r.bezierCurveTo(c,l,d,l,d,a),r.lineWidth=1+Math.log(e.num_junction_reads)/Math.log(2),r.strokeStyle="blue",r.stroke();const u=e.spanning_frag_coords;for(let e=0;e<u.length;e++){const n=u[e],s=Math.round((n.left-t)/i),o=Math.round((n.right-t)/i);r.beginPath(),r.moveTo(s,a),r.bezierCurveTo(s,h,o,h,o,a),r.lineWidth=1,r.strokeStyle="purple",r.stroke()}}class Ku extends Th{static defaults={type:"annotation",maxRows:1e3,displayMode:"EXPANDED",margin:10,featureHeight:14,autoHeight:!1,useScore:!1};constructor(e,t){super(e,t)}init(e){super.init(e),this.labelDisplayMode=e.labelDisplayMode,e._featureSource?(this.featureSource=e._featureSource,delete e._featureSource):this.featureSource=e.featureSource?e.featureSource:ld(e,this.browser.genome),"FusionJuncSpan"===e.type?(this.render=e.render||Yu,this.squishedRowHeight=e.squishedRowHeight||50,this.expandedRowHeight=e.expandedRowHeight||50,this.height=e.height||this.margin+2*this.expandedRowHeight):"snp"===e.type?(this.render=e.render||Xu,this.snpColors=["rgb(0,0,0)","rgb(0,0,255)","rgb(0,255,0)","rgb(255,0,0)"],this.colorBy="function",this.expandedRowHeight=e.expandedRowHeight||10,this.squishedRowHeight=e.squishedRowHeight||5,this.height=e.height||30):(this.render=e.render||ju,this.arrowSpacing=30,function(e){e.browser.on&&(e.browser.on("trackdragend",t),e.browser.on("trackremoved",i));function t(){e.trackView&&"SQUISHED"!==e.displayMode&&e.trackView.updateViews()}function i(n){e.browser.un&&e===n&&(e.browser.un("trackdragend",t),e.browser.un("trackremoved",i))}}(this),this.squishedRowHeight=e.squishedRowHeight||15,this.expandedRowHeight=e.expandedRowHeight||30,this.height=e.height||this.margin+2*this.expandedRowHeight,e.colorBy&&(e.colorBy.field&&(e.colorTable=e.colorBy.pallete||e.colorBy.palette,e.colorBy=e.colorBy.field),this.colorBy=e.colorBy,e.colorTable?this.colorTable=new ba(e.colorTable):this.colorTable=new ma("Set1")))}async postInit(){if("function"!=typeof this.featureSource.getHeader||(this.header=await this.featureSource.getHeader(),!this.disposed))return this.header&&this.setTrackProperties(this.header),void 0===this.visibilityWindow&&"function"==typeof this.featureSource.defaultVisibilityWindow&&(this.visibilityWindow=await this.featureSource.defaultVisibilityWindow()),this}get supportsWholeGenome(){return void 0!==this.config.supportsWholeGenome?this.config.supportsWholeGenome:this.featureSource&&"function"==typeof this.featureSource.supportsWholeGenome?this.featureSource.supportsWholeGenome():!(void 0!==this.visibilityWindow||!1!==this.config.indexed&&this.config.indexURL)||void 0}async getFeatures(e,t,i,n){const r=this.visibilityWindow;return this.featureSource.getFeatures({chr:e,start:t,end:i,bpPerPixel:n,visibilityWindow:r})}computePixelHeight(e){if("COLLAPSED"===this.displayMode)return this.margin+this.expandedRowHeight;{let t=0;if(e&&"function"==typeof e.forEach)for(let i of e)i.row&&i.row>t&&(t=i.row);return this.margin+(t+1)*("SQUISHED"===this.displayMode?this.squishedRowHeight:this.expandedRowHeight)}}draw(e){const t=e.features,i=e.context,n=e.bpPerPixel,r=e.bpStart,s=e.pixelWidth,o=e.pixelHeight,a=r+s*n+1;if(this.config.isMergedTrack||ya.fillRect(i,0,e.pixelTop,s,o,{fillStyle:"rgb(255, 255, 255)"}),t){const l=[];e.rowLastX=[],e.rowLastLabelX=[];for(let i of t)if(i.start>r&&i.end<a){const t="COLLAPSED"===this.displayMode?0:i.row||0;void 0===l[t]?l[t]=1:l[t]++,e.rowLastX[t]=-Number.MAX_SAFE_INTEGER,e.rowLastLabelX[t]=-Number.MAX_SAFE_INTEGER}const h=s/Math.max(1,Math.max(...l));let c=[];for(let s of t){if(s.end<r)continue;if(s.start>a)break;const t="COLLAPSED"===this.displayMode?0:s.row;e.drawLabel=e.labelAllFeatures||h>10;const l=Math.ceil((s.end-r)/n),d=c[t];if(!d||l>d){this.render.call(this,s,r,n,o,i,e);const a=Math.floor((s.start-r)/n);d&&a-d<=0&&(i.globalAlpha=.5,ya.strokeLine(i,a,0,a,o,{strokeStyle:"rgb(255, 255, 255)"}),i.globalAlpha=1),c[t]=l}}}else console.log("No feature list")}clickedFeatures(e){const t=e.y-this.margin,i=super.clickedFeatures(e);let n;switch(this.displayMode){case"SQUISHED":n=Math.floor(t/this.squishedRowHeight);break;case"EXPANDED":n=Math.floor(t/this.expandedRowHeight);break;default:n=void 0}return i.filter((function(e){return void 0===n||void 0===e.row||n===e.row}))}popupData(e,t){void 0===t&&(t=this.clickedFeatures(e));const i=e.genomicLocation,n=[];for(let e of t){const t=e._f||e,r="function"==typeof t.popupData?t.popupData(i):this.extractPopupData(t);if(r){n.length>0&&n.push("<hr/><hr/>");const s=this.infoURL||this.config.infoURL;for(let t of r)if(n.push(t),s&&t.name&&"name"===t.name.toLowerCase()&&t.value&&$i(t.value)&&!t.value.startsWith("<")){const i=s.replace("$$",e.name);t.value=`<a target=_blank href=${i}>${t.value}</a>`}const o="gff"===this.config.format||"gff3"===this.config.format||"gtf"===this.config.format;if(t.exons)for(let e=0;e<t.exons.length;e++){const r=t.exons[e];if(i>=r.start&&i<=r.end){const i=o?r.number:"-"===t.strand?t.exons.length-e:e+1;i&&(n.push("<hr/>"),n.push({name:"Exon Number",value:i}));break}}}}return n}menuItemList(){const e=[];if(this.render===Xu){e.push("<hr/>");for(let t of["function","class"])e.push({object:ft(Hi("Color by "+t,t===this.colorBy)),click:()=>{this.colorBy=t,this.trackView.repaintViews()}})}e.push("<hr/>");for(let t of["COLLAPSED","SQUISHED","EXPANDED"]){const i={COLLAPSED:"Collapse",SQUISHED:"Squish",EXPANDED:"Expand"};e.push({object:ft(Hi(i[t],t===this.displayMode)),click:()=>{this.displayMode=t,this.config.displayMode=t,this.trackView.checkContentHeight(),this.trackView.repaintViews()}})}return e}contextMenuItemList(e){const t=this.clickedFeatures(e);if(void 0===t||0===t.length)return;t.length>1&&t.sort(((e,t)=>t.end-t.start-(e.end-e.start)));const i=t[0];if(i.end-i.start<=1e6){const e=[{label:"View feature sequence",click:async()=>{let e=await this.browser.genome.getSequence(i.chr,i.start,i.end);e?"-"===i.strand&&(e=Za(e)):e="Unknown sequence",this.browser.alert.present(e)}}];return Fa()&&void 0!==navigator.clipboard&&e.push({label:"Copy feature sequence",click:async()=>{let e=await this.browser.genome.getSequence(i.chr,i.start,i.end);e?"-"===i.strand&&(e=Za(e)):e="Unknown sequence";try{await navigator.clipboard.writeText(e)}catch(e){console.error(e),this.browser.alert.present(`error copying sequence to clipboard ${e}`)}}}),e.push("<hr/>"),e}}description(){if(Xu===this.render){let e="<html>"+this.name+"<hr/>";return e+="<em>Color By Function:</em><br>",e+='<span style="color:red">Red</span>: Coding-Non-Synonymous, Splice Site<br>',e+='<span style="color:green">Green</span>: Coding-Synonymous<br>',e+='<span style="color:blue">Blue</span>: Untranslated<br>',e+='<span style="color:black">Black</span>: Intron, Locus, Unknown<br><br>',e+="<em>Color By Class:</em><br>",e+='<span style="color:red">Red</span>: Deletion<br>',e+='<span style="color:green">Green</span>: MNP<br>',e+='<span style="color:blue">Blue</span>: Microsatellite, Named<br>',e+='<span style="color:black">Black</span>: Indel, Insertion, SNP',e+="</html>",e}return super.description()}getColorForFeature(e){let t;if(this.altColor&&"-"===e.strand)t="function"==typeof this.altColor?this.altColor(e):this.altColor;else if(this.color)t="function"==typeof this.color?this.color(e):this.color;else if(this.colorBy){const i=e.getAttributeValue?e.getAttributeValue(this.colorBy):e[this.colorBy];t=this.colorTable.getColor(i)}else e.color&&(t=e.color);if(t||(t="rgb(0, 0, 150)"),e.alpha&&1!==e.alpha)t=Do.addAlpha(t,e.alpha);else if(this.useScore&&e.score&&!Number.isNaN(e.score)){const i=function(e,t,i){const n=(t-e)/9,r=Math.floor((i-e)/n);return Math.min(1,.2+.8*r/9)}(this.config.min?this.config.min:this.viewLimitMin?this.viewLimitMin:0,this.config.max?this.config.max:this.viewLimitMax?this.viewLimitMax:1e3,e.score);e.alpha=i,t=Do.addAlpha(t,i)}return t}dispose(){this.trackView=void 0}}class Ju{constructor(e){this.config=e,this.browser=e.browser,this.columnFormat=e.columnFormat,this.tableRowSelectionList=[],this.tableDOM=_t.div({class:"igv-roi-table"}),e.parent.appendChild(this.tableDOM),this.headerDOM=e,this.tableColumnTitles=this.tableDOM,this.tableRowContainer=this.tableDOM,this.footerDOM=e.gotoButtonHandler}set headerDOM({browser:e,parent:t,headerTitle:i,dismissHandler:n}){const r=_t.div();this.tableDOM.appendChild(r);const s=_t.div();r.appendChild(s),s.innerHTML=i;const o=_t.div();r.appendChild(o),o.appendChild(_i.createIcon("times")),this.boundDismissHandler=function(e){e.stopPropagation(),n()}.bind(this),o.addEventListener("click",this.boundDismissHandler);const{y:a}=e.root.getBoundingClientRect(),{y:l}=t.getBoundingClientRect(),h=-(l-a);Si(this.tableDOM,r,{minX:0,minY:h}),this.tableDOM.style.display="none",this._headerDOM=r}set tableColumnTitles(e){const t=_t.div({class:"igv-roi-table-column-titles"});e.appendChild(t);for(const{label:e,width:i}of this.columnFormat){const n=_t.div();t.appendChild(n),n.style.width=i,n.innerText=e}this._tableColumnTitlesDOM=t}get tableColumnTitles(){return this._tableColumnTitlesDOM}set tableRowContainer(e){const t=_t.div({class:"igv-roi-table-row-container"});e.appendChild(t),this._tableRowContainerDOM=t}get tableRowContainer(){return this._tableRowContainerDOM}set footerDOM(e){const t=_t.div();this.tableDOM.appendChild(t);const i=_t.div({class:"igv-roi-table-button"});t.appendChild(i),i.id="igv-roi-table-view-button",i.textContent="Go To",i.style.pointerEvents="none",this._footerDOM=t,this.gotoButton=i,this.boundGotoButtonHandler=e.bind(this),this.gotoButton.addEventListener("click",this.boundGotoButtonHandler)}tableRowDOMHelper(e){e.addEventListener("mousedown",(t=>{t.stopPropagation(),e.classList.toggle("igv-roi-table-row-selected"),e.classList.contains("igv-roi-table-row-selected")?e.classList.remove("igv-roi-table-row-hover"):e.classList.add("igv-roi-table-row-hover"),this.setTableRowSelectionState(e.classList.contains("igv-roi-table-row-selected"))})),e.addEventListener("mouseover",(t=>{e.classList.contains("igv-roi-table-row-selected")?e.classList.remove("igv-roi-table-row-hover"):e.classList.add("igv-roi-table-row-hover")})),e.addEventListener("mouseout",(t=>{e.classList.remove("igv-roi-table-row-hover")}))}clearTable(){const e=this.tableRowContainer.querySelectorAll(".igv-roi-table-row");for(let t of e)t.remove()}setTableRowSelectionState(e){e?this.tableRowSelectionList.push(1):this.tableRowSelectionList.pop(),this.gotoButton.style.pointerEvents=this.tableRowSelectionList.length>0?"auto":"none"}present(){this.tableDOM.style.left="0px";const{y:e}=this.browser.root.getBoundingClientRect(),{y:t}=this.config.parent.getBoundingClientRect();this.tableDOM.style.top=e-t+"px",this.tableDOM.style.display="flex"}dismiss(){this.tableDOM.style.display="none"}dispose(){this.tableDOM.innerHTML="",this.tableDOM.remove();for(const e of Object.keys(this))this[e]=void 0;document.removeEventListener("click",this.boundDismissHandler)}}class ef extends Ju{constructor(e){super(Object.assign({width:"1024px"},e)),this.descriptionDOM=e}set descriptionDOM(e){if(e.description){let t;t=_t.div({class:"igv-roi-table-description"}),this.tableDOM.insertBefore(t,this.tableColumnTitles),t.style.height="auto",t.innerHTML="BLAT result for query sequence:",t=_t.div({class:"igv-roi-table-description"}),this.tableDOM.insertBefore(t,this.tableColumnTitles),t.style.height="auto",t.style.maxHeight="128px",t.innerHTML=e.description,t=_t.div({class:"igv-roi-table-goto-explainer"}),this.tableDOM.insertBefore(t,this.tableColumnTitles),t.innerHTML="Select one or more rows and click Go To to view the regions"}}tableRowDOM(e){const t=_t.div({class:"igv-roi-table-row"}),i=e.map((e=>isFinite(e)?Wi(e):e));for(let e=0;e<i.length;e++){const n=_t.div();t.appendChild(n);const r=this.columnFormat[e];n.style.width=r.width||"fit-content",n.innerText=i[e]}return this.tableRowDOMHelper(t),t}renderTable(e){if(Array.from(this.tableRowContainer.querySelectorAll(".igv-roi-table-row")).forEach((e=>e.remove())),e.length>0)for(let t of e){const e=this.tableRowDOM(t);this.tableRowContainer.appendChild(e)}}static getColumnFormatConfiguration(){return[{label:"chr",width:"7%"},{label:"start",width:"12%"},{label:"end",width:"12%"},{label:"strand",width:"5%"},{label:"score",width:"5%"},{label:"match",width:"5%"},{label:"mis-match",width:"7%"},{label:"rep. match",width:"7%"},{label:"N's",width:"3%"},{label:"Q gap count",width:"9%"},{label:"Q gap bases",width:"9%"},{label:"T gap count",width:"9%"},{label:"T gap bases",width:"9%"}]}static gotoButtonHandler(e){e.stopPropagation();const t=this.tableDOM.querySelectorAll(".igv-roi-table-row-selected"),i=[];for(const e of t){const t=[];e.querySelectorAll("div").forEach((e=>t.push(e.innerText)));const[n,r,s]=t;i.push(`${n}:${r}-${s}`)}for(const e of this.tableDOM.querySelectorAll(".igv-roi-table-row"))e.classList.remove("igv-roi-table-row-selected");this.setTableRowSelectionState(!1),this.browser.search(i.join(" "))}}const tf="https://igv.org/services/blatUCSC.php";async function nf({url:e,userSeq:t,db:i}){e=e||tf;const n=await async function(e="",t,i){const n=new URLSearchParams;n.append("userSeq",t),n.append("db",i);const r=await fetch(e,{method:"post",body:n});return r.json()}(e,t,i);n.fields;return n.blat.map(ch)}const rf=25e3;class sf extends Ku{constructor(e,t){super(e,t),this.name||(this.name="Blat Results"),this.sequence=e.sequence,this.table=void 0}openTableView(){if(void 0===this.table){const e=this.config.features.map((e=>[e.chr,e.start+1,e.end,e.strand,e.score,e.matches,e.misMatches,e.repMatches,e.nCount,e.qNumInsert,e.qBaseInsert,e.tNumInsert,e.tBaseInsert])),t={browser:this.browser,parent:this.browser.parent,headerTitle:this.config.title,description:this.sequence,dismissHandler:()=>{this.table.dismiss(),this.table.dispose(),this.table=void 0},columnFormat:ef.getColumnFormatConfiguration(),gotoButtonHandler:ef.gotoButtonHandler};this.table=new ef(t),this.table.renderTable(e)}this.table.present()}menuItemList(){const e=super.menuItemList();return e.push("<hr/>"),e.push({label:"Open table view",click:()=>this.openTableView()}),e}dispose(){super.dispose(),this.table&&this.table.popover.parentElement.removeChild(this.table.popover)}}async function of({sequence:e,browser:t,name:i,title:n}){if(e.length>rf)return void t.alert.present(`Sequence size exceeds maximum allowed length (${e.length} > 25000)`);const r=t.genome.id,s=t.config.blatServerURL;try{const o={type:"blat",name:i||"blat results",title:n||"blat results",sequence:e,altColor:"rgb(176, 176, 236)",color:"rgb(236, 176, 176)",features:await nf({url:s,userSeq:e,db:r})};(await t.loadTrack(o)).openTableView()}catch(e){t.alert.present(`Error performing blat search:  ${e}`)}}const af="rgb(185, 185, 185)";class lf extends Th{static defaults={alleleFreqThreshold:.2,visibilityWindow:3e4,showCoverage:!0,showAlignments:!0,viewAsPairs:!1,pairsSupported:!0,showSoftClips:!1,showAllBases:!1,showInsertions:!0,showMismatches:!0,height:300,coverageTrackHeight:50};constructor(e,t){super(e,t)}init(e){this.type="alignment",this.featureSource=new au(e,this.browser),this.coverageTrack=new hf(e,this),this.alignmentTrack=new cf(e,this),super.init(e),this.alignmentTrack.setTop(this.coverageTrack,this.showCoverage),this.showAlignments||(this._height=this.coverageTrackHeight),e.sort&&(Array.isArray(e.sort)?this.assignSort(e.sort[0]):this.assignSort(e.sort))}set height(e){this._height=e,this.showAlignments&&(this.alignmentTrack.height=this.showCoverage?e-this.coverageTrackHeight:e)}get height(){return this._height}get minTemplateLength(){const e=void 0!==this.config.minTLEN?this.config.minTLEN:this.config.minFragmentLength;return void 0!==e?e:this._pairedEndStats?this._pairedEndStats.minTLEN:0}get maxTemplateLength(){const e=void 0!==this.config.maxTLEN?this.config.maxTLEN:this.config.maxFragmentLength;return void 0!==e?e:this._pairedEndStats?this._pairedEndStats.maxTLEN:1e3}sort(e){e=this.assignSort(e);for(let t of this.trackView.viewports)if(t.containsPosition(e.chr,e.position)){const i=t.cachedFeatures;i&&(i.sortRows(e),t.repaint())}}assignSort(e){if(e.locus){const t=function(e){const t=e.split(":"),i=t[1].split("-"),n={chr:t[0],start:Number.parseInt(i[0].replace(/,/g,""))-1};return i.length>1?n.end=Number.parseInt(i[1].replace(/,/g,"")):n.end=n.start+1,n}(e.locus);e.chr=t.chr,e.position=t.start}else e.position--;return e.direction="ASC"===e.direction||!0===e.direction,e.chr=this.browser.genome.getChromosomeName(e.chr),this.sortObject=e,this.sortObject}async getFeatures(e,t,i,n,r){const s=await this.featureSource.getAlignments(e,t,i);if(s.paired&&!this._pairedEndStats&&!this.config.maxFragmentLength){const e=new Hu(s.alignments,this.config);e.totalCount>99&&(this._pairedEndStats=e)}s.alignments=void 0;const o=this.sortObject;return o&&o.chr===e&&o.position>=t&&o.position<=i&&s.sortRows(o),s}computePixelHeight(e){return(this.showCoverage?this.coverageTrackHeight:0)+(this.showAlignments?this.alignmentTrack.computePixelHeight(e):0)}draw(e){ya.fillRect(e.context,0,e.pixelTop,e.pixelWidth,e.pixelHeight,{fillStyle:"rgb(255, 255, 255)"}),!0===this.showCoverage&&this.coverageTrackHeight>0?(this.trackView.axisCanvas.style.display="block",this.coverageTrack.draw(e)):this.trackView.axisCanvas.style.display="none",!0===this.showAlignments&&(this.alignmentTrack.setTop(this.coverageTrack,this.showCoverage),this.alignmentTrack.draw(e))}paintAxis(e,t,i){this.coverageTrack.paintAxis(e,t,this.coverageTrackHeight)}contextMenuItemList(e){return this.alignmentTrack.contextMenuItemList(e)}popupData(e){return!0===this.showCoverage&&e.y>=this.coverageTrack.top&&e.y<this.coverageTrackHeight?this.coverageTrack.popupData(e):this.alignmentTrack.popupData(e)}clickedFeatures(e){let t;return t=!0===this.showCoverage&&e.y>=this.coverageTrack.top&&e.y<this.coverageTrackHeight?this.coverageTrack.getClickedObject(e):this.alignmentTrack.getClickedObject(e),t?[t]:void 0}hoverText(e){if(!0===this.showCoverage&&e.y>=this.coverageTrack.top&&e.y<this.coverageTrackHeight){const t=this.coverageTrack.getClickedObject(e);if(t)return t.hoverText()}}menuItemList(){let e=[];e=e.concat(Ui.numericDataMenuItems(this.trackView)),e.push("<hr/>");const t=ft('<div class="igv-track-menu-category">');t.text("Color by:"),e.push({name:void 0,object:t,click:void 0,init:void 0});const i=[{key:"strand",label:"read strand"}];this.alignmentTrack.hasPairs&&(i.push({key:"firstOfPairStrand",label:"first-of-pair strand"}),i.push({key:"pairOrientation",label:"pair orientation"}),i.push({key:"tlen",label:"insert size (TLEN)"}),i.push({key:"unexpectedPair",label:"pair orientation & insert size (TLEN)"}));const n="tag"+(this.alignmentTrack.colorByTag?" ("+this.alignmentTrack.colorByTag+")":"");i.push({key:"tag",label:n});for(let t of i){const i=this.alignmentTrack.colorBy===t.key;e.push(this.colorByCB(t,i))}const r=()=>{if(!this.autoHeight){const e=(this.showCoverage?this.coverageTrackHeight:0)+(this.showAlignments?this.alignmentTrack.height:0);this.trackView.setTrackHeight(e)}};e.push("<hr/>"),e.push({object:ft(Hi("Show Coverage",this.showCoverage)),click:()=>{this.showCoverage=!this.showCoverage,r(),this.trackView.checkContentHeight(),this.trackView.repaintViews()}}),e.push({object:ft(Hi("Show Alignments",this.showAlignments)),click:()=>{this.showAlignments=!this.showAlignments,r(),this.trackView.checkContentHeight(),this.trackView.repaintViews()}}),e.push("<hr/>"),e.push({object:ft(Hi("Show all bases",this.showAllBases)),click:()=>{this.showAllBases=!this.showAllBases,this.config.showAllBases=this.showAllBases,this.trackView.repaintViews()}}),e.push("<hr/>"),e.push({object:ft(Hi("Show mismatches",this.showMismatches)),click:()=>{this.showMismatches=!this.showMismatches,this.config.showMismatches=this.showMismatches,this.trackView.repaintViews()}}),e.push({object:ft(Hi("Show insertions",this.showInsertions)),click:()=>{this.showInsertions=!this.showInsertions,this.config.showInsertions=this.showInsertions,this.getCachedAlignmentContainers(),this.trackView.repaintViews()}}),e.push({object:ft(Hi("Show soft clips",this.showSoftClips)),click:()=>{this.showSoftClips=!this.showSoftClips,this.config.showSoftClips=this.showSoftClips,this.featureSource.setShowSoftClips(this.showSoftClips);const e=this.getCachedAlignmentContainers();for(let t of e)t.setShowSoftClips(this.showSoftClips);this.trackView.repaintViews()}}),this.pairsSupported&&this.alignmentTrack.hasPairs&&(e.push("<hr/>"),e.push({object:ft(Hi("View as pairs",this.viewAsPairs)),click:()=>{this.viewAsPairs=!this.viewAsPairs,this.config.viewAsPairs=this.viewAsPairs,this.featureSource.setViewAsPairs(this.viewAsPairs);const e=this.getCachedAlignmentContainers();for(let t of e)t.setViewAsPairs(this.viewAsPairs);this.trackView.repaintViews()}})),this.browser.circularView&&(this.alignmentTrack.hasPairs||this.alignmentTrack.hasSupplemental)&&(e.push("<hr/>"),this.alignmentTrack.hasPairs&&e.push({label:"Add discordant pairs to circular view",click:()=>{for(let e of this.trackView.viewports)this.addPairedChordsForViewport(e)}}),this.alignmentTrack.hasSupplemental&&e.push({label:"Add split reads to circular view",click:()=>{for(let e of this.trackView.viewports)this.addSplitChordsForViewport(e)}})),e.push("<hr/>");const s=ft('<div class="igv-track-menu-category">');return s.text("Display mode:"),e.push({name:void 0,object:s,click:void 0,init:void 0}),e.push({object:ft(Hi("expand","EXPANDED"===this.alignmentTrack.displayMode)),click:()=>{this.alignmentTrack.displayMode="EXPANDED",this.config.displayMode="EXPANDED",this.trackView.checkContentHeight(),this.trackView.repaintViews()}}),e.push({object:ft(Hi("squish","SQUISHED"===this.alignmentTrack.displayMode)),click:()=>{this.alignmentTrack.displayMode="SQUISHED",this.config.displayMode="SQUISHED",this.trackView.checkContentHeight(),this.trackView.repaintViews()}}),e}colorByCB(e,t){return{name:void 0,object:ft(Hi(e.label,t)),click:t=>{"tag"!==e.key?e.key===this.alignmentTrack.colorBy?(this.alignmentTrack.colorBy="none",this.config.colorBy="none",this.trackView.repaintViews()):(this.alignmentTrack.colorBy=e.key,this.config.colorBy=e.key,this.trackView.repaintViews()):this.browser.inputDialog.present({label:"Tag Name",value:this.alignmentTrack.colorByTag?this.alignmentTrack.colorByTag:"",callback:e=>{e?(this.alignmentTrack.colorBy="tag",this.alignmentTrack.colorByTag=e,this.alignmentTrack.tagColors||(this.alignmentTrack.tagColors=new ma("Set1"))):(this.alignmentTrack.colorBy="none",this.alignmentTrack.colorByTag=""),this.trackView.repaintViews()}},t)},init:void 0}}getState(){const e=super.getState();return this.sortObject&&(e.sort={chr:this.sortObject.chr,position:this.sortObject.position+1,option:this.sortObject.option,direction:this.sortObject.direction?"ASC":"DESC"}),e}getCachedAlignmentContainers(){return this.trackView.viewports.map((e=>e.cachedFeatures))}get dataRange(){return this.coverageTrack.dataRange}set dataRange(e){this.coverageTrack.dataRange=e}get logScale(){return this.coverageTrack.logScale}set logScale(e){this.coverageTrack.logScale=e}get autoscale(){return this.coverageTrack.autoscale}set autoscale(e){this.coverageTrack.autoscale=e}addPairedChordsForViewport(e){const t=this.maxTemplateLength,i=[],n=e.referenceFrame;for(let r of e.cachedFeatures.allAlignments())r.end>=n.start&&r.start<=n.end&&(r.paired?r.end-r.start>t&&i.push(r):r.mate&&r.mate.chr&&(r.mate.chr!==r.chr||Math.max(r.fragmentLength)>t)&&i.push(r));zu((e=>{const t=[];for(let i of e)if(i.paired)i.firstAlignment&&i.secondAlignment&&t.push({uniqueId:i.readName,refName:Du(i.firstAlignment.chr),start:i.firstAlignment.start,end:i.firstAlignment.end,mate:{refName:Du(i.secondAlignment.chr),start:i.secondAlignment.start,end:i.secondAlignment.end}});else{const e=i.mate;e&&e.chr&&e.position&&t.push({uniqueId:i.readName,refName:Du(i.chr),start:i.start,end:i.end,mate:{refName:Du(e.chr),start:e.position-1,end:e.position}})}return t})(i),this,n,.02)}addSplitChordsForViewport(e){const t=[],i=e.referenceFrame;for(let n of e.cachedFeatures.allAlignments()){const e=n.hasTag("SA");n.end>=i.start&&n.start<=i.end&&e&&t.push(n)}zu((e=>{const t=e=>{const t=Ed(e.tags().SA);let n=0;for(let r of t)r.start!==e.start&&i.push({uniqueId:`${e.readName}_${n++}`,refName:Du(e.chr),start:e.start,end:e.end,mate:{refName:Du(r.chr),start:r.start,end:r.start+r.lenOnRef}})},i=[];for(let i of e)i.paired?(t(i.firstAlignment),i.secondAlignment&&t(i.secondAlignment)):t(i);return i})(t),this,i,.02)}}class hf{constructor(e,t){this.parent=t,this.featureSource=t.featureSource,this.paintAxis=lu,this.top=0,this.autoscale=e.autoscale||void 0===e.max,this.autoscale||(this.dataRange={min:e.min||0,max:e.max})}get height(){return this.parent.coverageTrackHeight}draw(e){const t=e.pixelTop;e.pixelHeight;const i=this.parent.browser.nucleotideColors;if(t>this.height)return;const n=e.context,r=e.features.coverageMap;let s;r.refSeq&&(s=r.refSeq.toUpperCase());const o=e.bpPerPixel,a=e.bpStart,l=a+e.pixelWidth*o+1;let h;h=this.parent.coverageColor?this.parent.coverageColor:this.parent.color&&"function"!=typeof this.parent.color?Do.darkenLighten(this.parent.color,-35):"rgb(150, 150, 150)",ya.setProperties(n,{fillStyle:h,strokeStyle:h});const c=Math.max(1,Math.ceil(1/o));for(let e=0,t=r.coverage.length;e<t;e++){const t=r.bpStart+e;if(t<a)continue;if(t>l)break;const i=r.coverage[e];if(!i)continue;const s=Math.round(i.total/this.dataRange.max*this.height),h=this.height-s,d=Math.floor((t-a)/o);ya.fillRect(n,d,h,c,s)}if(s)for(let e=0,t=r.coverage.length;e<t;e++){const t=r.bpStart+e;if(t<a)continue;if(t>l)break;const h=r.coverage[e];if(!h)continue;const d=h.total/this.dataRange.max*this.height;let u=this.height-d;const f=Math.floor((t-a)/o),p=s[e];if(h.isMismatch(p)){ya.setProperties(n,{fillStyle:i[p]}),ya.fillRect(n,f,u,c,d);let e=0;for(let t of["A","C","T","G"]){const r=(h["pos"+t]+h["neg"+t])/this.dataRange.max*this.height;u=this.height-r-e,e+=r,ya.setProperties(n,{fillStyle:i[t]}),ya.fillRect(n,f,u,c,r)}}}}getClickedObject(e){let t=e.viewport.cachedFeatures;if(!t||0===t.length)return;const i=Math.floor(e.genomicLocation),n=t.coverageMap,r=Math.floor(i-n.bpStart);return n.coverage[r]}popupData(e){const t=[],i=this.getClickedObject(e);if(i){const n=Math.floor(e.genomicLocation),r=e.viewport.referenceFrame;t.push(r.chr+":"+Wi(1+n)),t.push({name:"Total Count",value:i.total});let s=i.posA+i.negA;s>0&&(s=s.toString()+" ("+Math.round(s/i.total*100)+"%, "+i.posA+"+, "+i.negA+"- )"),t.push({name:"A",value:s}),s=i.posC+i.negC,s>0&&(s=s.toString()+" ("+Math.round(s/i.total*100)+"%, "+i.posC+"+, "+i.negC+"- )"),t.push({name:"C",value:s}),s=i.posG+i.negG,s>0&&(s=s.toString()+" ("+Math.round(s/i.total*100)+"%, "+i.posG+"+, "+i.negG+"- )"),t.push({name:"G",value:s}),s=i.posT+i.negT,s>0&&(s=s.toString()+" ("+Math.round(s/i.total*100)+"%, "+i.posT+"+, "+i.negT+"- )"),t.push({name:"T",value:s}),s=i.posN+i.negN,s>0&&(s=s.toString()+" ("+Math.round(s/i.total*100)+"%, "+i.posN+"+, "+i.negN+"- )"),t.push({name:"N",value:s}),t.push("<HR/>"),t.push({name:"DEL",value:i.del.toString()}),t.push({name:"INS",value:i.ins.toString()})}return t}}class cf{constructor(e,t){this.parent=t,this.browser=t.browser,this.featureSource=t.featureSource,this.top=0===e.coverageTrackHeight?0:e.coverageTrackHeight+5,this.displayMode=e.displayMode||"EXPANDED",this.alignmentRowHeight=e.alignmentRowHeight||14,this.squishedRowHeight=e.squishedRowHeight||3,this.negStrandColor=e.negStrandColor||"rgba(150, 150, 230, 0.75)",this.posStrandColor=e.posStrandColor||"rgba(230, 150, 150, 0.75)",this.insertionColor=e.insertionColor||"rgb(138, 94, 161)",this.insertionTextColor=e.insertionTextColor||"white",this.showInsertionText=void 0!==e.showInsertionText&&!!e.showInsertionText,this.deletionColor=e.deletionColor||"black",this.deletionTextColor=e.deletionTextColor||"black",this.showDeletionText=void 0!==e.showDeletionText&&!!e.showDeletionText,this.skippedColor=e.skippedColor||"rgb(150, 170, 170)",this.pairConnectorColor=e.pairConnectorColor,this.smallTLENColor=e.smallTLENColor||e.smallFragmentLengthColor||"rgb(0, 0, 150)",this.largeTLENColor=e.largeTLENColor||e.largeFragmentLengthColor||"rgb(200, 0, 0)",this.pairOrientation=e.pairOrienation||"fr",this.pairColors={},this.pairColors.RL=e.rlColor||"rgb(0, 150, 0)",this.pairColors.RR=e.rrColor||"rgb(20, 50, 200)",this.pairColors.LL=e.llColor||"rgb(0, 150, 150)",this.colorBy=e.colorBy||"unexpectedPair",this.colorByTag=e.colorByTag?e.colorByTag.toUpperCase():void 0,this.bamColorTag=void 0===e.bamColorTag?"YC":e.bamColorTag,this.hideSmallIndels=e.hideSmallIndels,this.indelSizeThreshold=e.indelSizeThreshold||1,this.hasPairs=!1,this.hasSupplemental=!1}setTop(e,t){this.top=0===e.height||!1===t?0:5+e.height}computePixelHeight(e){if(e.packedAlignmentRows){return(e.hasDownsampledIntervals()?10:0)+("SQUISHED"===this.displayMode?this.squishedRowHeight:this.alignmentRowHeight)*e.packedAlignmentRows.length+5}return 0}draw(e){const t=e.features,i=e.context,n=e.bpPerPixel,r=e.bpStart,s=e.pixelWidth,o=r+s*n+1,a=this.parent.showSoftClips,l=this.parent.showAllBases,h=this.browser.nucleotideColors,c=t.packedAlignmentRows;i.save();let d=t.sequence;d&&(d=d.toUpperCase());let u=0,f=e.pixelTop;this.top&&i.translate(0,this.top);const p=f+e.pixelHeight;t.hasDownsampledIntervals()?(u=10,t.downsampledIntervals.forEach((function(e){var t=(e.start-r)/n,s=(e.end-r)/n;s-t>5&&(t+=1,s-=1),ya.fillRect(i,t,2,s-t,3,{fillStyle:"black"})}))):u=0,this.alignmentsYOffset=u;const g="SQUISHED"===this.displayMode?this.squishedRowHeight:this.alignmentRowHeight;if(c){const e=c.length;for(let t=0;t<e;t++){const e=c[t],i=u+g*t,n=g<=4?g:g-2;if(i>p)break;if(!(i+n<f))for(let t of e.alignments)if(this.hasPairs=this.hasPairs||t.isPaired(),this.browser.circularView&&(this.hasSupplemental=this.hasSupplemental||t.hasTag("SA")),!(t.start+t.lengthOnRef<r)){if(t.start>o)break;!0!==t.hidden&&(t instanceof gd?(m.call(this,t,i,n),b.call(this,t.firstAlignment,i,n),t.secondAlignment&&b.call(this,t.secondAlignment,i,n)):b.call(this,t,i,n))}}}function m(e,t,s){var a=this.getConnectorColor(e.firstAlignment),l=(e.connectingStart-r)/n,h=(e.connectingEnd-r)/n,c=t+s/2;e.connectingEnd<r||e.connectingStart>o||(e.mq<=0&&(a=Do.addAlpha(a,.15)),ya.setProperties(i,{fillStyle:a,strokeStyle:a}),ya.strokeLine(i,l,c,h,c))}function b(e,c,u){if(e.start+e.lengthOnRef<r||e.start>o)return;const f=a?e.blocks:e.blocks.filter((e=>"S"!==e.type));let p=this.getAlignmentColor(e);const m=p;e.mq<=0&&(p=Do.addAlpha(p,.15)),ya.setProperties(i,{fillStyle:p,strokeStyle:m});const b=[];for(let e=0;e<f.length;e++){const t=f[e];if(!(e!==f.length-1&&f[e+1].start<r)&&(b.push(...w.call(this,t,e)),t.start+t.len>o))break}if(e.gaps){const t=c+u/2;for(let s of e.gaps){const e=(s.start-r)/n,o=(s.start+s.len-r)/n,a=o-e,l=s.len.toString(),h=6*l.length,d=e+a/2,u="D"===s.type?this.deletionColor:this.skippedColor;if(ya.strokeLine(i,e,t,o,t,{strokeStyle:u,lineWidth:2}),this.showDeletionText&&s.len>1&&a>=h+8){const e=d-h/2;ya.fillRect(i,e-1,c-1,h+2,12,{fillStyle:"white"}),ya.fillText(i,l,e,c+10,{font:"normal 10px monospace",fillStyle:this.deletionTextColor})}}}if(e.insertions&&this.parent.showInsertions){let t=-1;for(let s of e.insertions){if(this.hideSmallIndels&&s.len<=this.indelSizeThreshold)continue;if(s.start<r)continue;if(s.start>o)break;const e=s.start-r,a=s.len.toString(),l=2+6*a.length,h=this.showInsertionText&&1!==s.len?Math.round(s.len/n):2,d=Math.max(Math.min(l,h),2),f=e/n-d/2;if(f-t>2){const e={fillStyle:this.insertionColor};ya.fillRect(i,f-2,c,d+4,2,e),ya.fillRect(i,f,c+2,d,u-4,e),ya.fillRect(i,f-2,c+u-2,d+4,2,e),this.showInsertionText&&s.len>1&&h>l&&ya.fillText(i,a,f+1,c+10,{font:"normal 10px monospace",fillStyle:this.insertionTextColor}),t=f}}}function w(o,a){const b=[],w=o.start-t.start,v=(o.start-r)/n,y=(o.start+o.len-r)/n,_=Math.max(1,y-v),x=100/n,k=Math.min(g/2,x/6),C="S"===o.type,S=e.mq<=0||this.highlightedAlignmentReadNamed===e.readName||C;let A=m;this.highlightedAlignmentReadNamed===e.readName?A="red":C&&(A="rgb(50,50,50)");const E=!0===e.strand&&a===f.length-1,T=!1===e.strand&&0===a;if(E|T){let e,t;E?(e=[v,y,y+k,y,v,v],t=[c,c,c+u/2,c+u,c+u,c]):T&&(e=[y,v,v-k,v,y,y],t=[c,c,c+u/2,c+u,c+u,c]),ya.fillPolygon(i,e,t,{fillStyle:p}),S&&ya.strokePolygon(i,e,t,{strokeStyle:A})}else ya.fillRect(i,v,c,_,u,{fillStyle:p}),S&&(i.save(),i.strokeStyle=A,i.strokeRect(v,c,_,u),i.restore());if(C||l||this.parent.showMismatches&&d&&e.seq&&"*"!==e.seq){const t=e.seq?e.seq.toUpperCase():void 0,i=e.qual,a=o.seqOffset,f=Math.max(1,1/n);for(let e=0,p=o.len;e<p;e++){const p=(o.start+e-r)/n;if(p+f<0)continue;if(p>s)break;let g=t?t.charAt(a+e):"";const m=w+e>=0?d.charAt(w+e):"";if("="===g&&(g=m),"X"===g||m!==g||C||l){let t;if(!C&&void 0!==i&&i.length>a+e){t=df(i[a+e],h[g])}else t=h[g];t&&b.push({bbox:{x:p,y:c,width:f,height:u},baseColor:t,readChar:g})}}}return b}b.forEach((({bbox:e,baseColor:t,readChar:r})=>{!function(e,t,i,n,r){var s;if(t<=.1&&i.height>=8){const t=Math.min(10,i.height);e.font=t+"px sans-serif",s=i.x+i.width/2,ya.strokeText(e,r,s-e.measureText(r).width/2,t-1+i.y,{strokeStyle:n})}else ya.fillRect(e,i.x,i.y,i.width,i.height,{fillStyle:n})}(i,n,e,t,r)}))}i.restore()}popupData(e){const t=this.getClickedObject(e);return t?t.popupData(e.genomicLocation):void 0}contextMenuItemList(e){const t=e.viewport,i=[],n=i=>{const n=this.parent.sortObject,r=!n||n.position!==Math.floor(e.genomicLocation)||!n.direction,s={chr:t.referenceFrame.chr,position:Math.floor(e.genomicLocation),option:i,direction:r};this.parent.sortObject=s,t.cachedFeatures.sortRows(s),t.repaint()};i.push("<b>Sort by...</b>"),i.push({label:"&nbsp; base",click:()=>n("BASE")}),i.push({label:"&nbsp; read strand",click:()=>n("STRAND")}),i.push({label:"&nbsp; insert size",click:()=>n("INSERT_SIZE")}),i.push({label:"&nbsp; gap size",click:()=>n("GAP_SIZE")}),i.push({label:"&nbsp; chromosome of mate",click:()=>n("MATE_CHR")}),i.push({label:"&nbsp; mapping quality",click:()=>n("MQ")}),i.push({label:"&nbsp; read name",click:()=>n("READ_NAME")}),i.push({label:"&nbsp; aligned read length",click:()=>n("ALIGNED_READ_LENGTH")}),i.push({label:"&nbsp; tag",click:()=>{const i=this.parent.sortObject,n=!i||i.position!==Math.floor(e.genomicLocation)||!i.direction,r={label:"Tag Name",value:this.sortByTag?this.sortByTag:"",callback:i=>{if(i){const r={chr:t.referenceFrame.chr,position:Math.floor(e.genomicLocation),option:"TAG",tag:i,direction:n};this.sortByTag=i,this.parent.sortObject=r,t.cachedFeatures.sortRows(r),t.repaint()}}};this.browser.inputDialog.present(r,e.event)}}),i.push("<hr/>");const r=this.getClickedObject(e);if(r){const t=this.parent.showSoftClips,n="function"==typeof r.alignmentContaining?r.alignmentContaining(e.genomicLocation,t):r;if(n){n.isPaired()&&n.isMateMapped()&&i.push({label:"View mate in split screen",click:()=>{if(n.mate){const t=e.viewport.referenceFrame;if(this.browser.genome.getChromosome(n.mate.chr)){this.highlightedAlignmentReadNamed=n.readName;const e=t.end-t.start,i=n.mate.position-e/2,r=n.mate.position+e/2;this.browser.addMultiLocusPanel(n.mate.chr,i,r,t)}else this.browser.alert.present(`Reference does not contain chromosome: ${n.mate.chr}`)}},init:void 0}),i.push({label:"View read sequence",click:()=>{const e=n.seq;e&&"*"!==e?this.browser.alert.present(e):this.browser.alert.present("Read sequence: *")}}),Fa()&&i.push({label:"Copy read sequence",click:async()=>{const e=n.seq;try{await navigator.clipboard.writeText(e)}catch(e){console.error(e),this.browser.alert.present(`error copying sequence to clipboard ${e}`)}}});const t=n.seq;if(t&&"*"!=t){t.length<rf&&i.push({label:"BLAT read sequence",click:()=>{const e=n.isNegativeStrand()?Za(t):t,i=`${n.readName} - blat`,r=`${this.parent.name} - ${i}`;of({sequence:e,browser:this.browser,name:i,title:r})}});const e=n.softClippedBlocks();e.left&&e.left.len>20&&e.left.len<rf&&i.push({label:"BLAT left soft-clipped sequence",click:()=>{const i=t.substr(e.left.seqOffset,e.left.len),r=n.isNegativeStrand()?Za(i):i,s=`${n.readName} - blat left clip`,o=`${this.parent.name} - ${s}`;of({sequence:r,browser:this.browser,name:s,title:o})}}),e.right&&e.right.len>20&&e.right.len<rf&&i.push({label:"BLAT right soft-clipped sequence",click:()=>{const i=t.substr(e.right.seqOffset,e.right.len),r=n.isNegativeStrand()?Za(i):i,s=`${n.readName} - blat right clip`,o=`${this.parent.name} - ${s}`;of({sequence:r,browser:this.browser,name:s,title:o})}})}i.push("<hr/>")}}return this.browser.circularView&&(this.hasPairs||this.hasSupplemental)&&(this.hasPairs&&i.push({label:"Add discordant pairs to circular view",click:()=>{this.parent.addPairedChordsForViewport(t)}}),this.hasSupplemental&&i.push({label:"Add split reads to circular view",click:()=>{this.parent.addSplitChordsForViewport(t)}}),i.push("<hr/>")),i}getClickedObject(e){const t=e.viewport,i=e.y,n=e.genomicLocation,r=this.parent.showSoftClips;let s=t.cachedFeatures;if(!s||0===s.length)return;let o=s.packedAlignmentRows,a=s.downsampledIntervals;const l="SQUISHED"===this.displayMode?this.squishedRowHeight:this.alignmentRowHeight;let h=Math.floor((i-this.top-this.alignmentsYOffset)/l);if(h<0){for(let e=0;e<a.length;e++)if(a[e].start<=n&&a[e].end>=n)return a[e]}else if(h<o.length){const e=o[h].alignments.filter((e=>e.containsLocation(n,r)));if(e.length>0)return e[0]}}getConnectorColor(e){if(this.pairConnectorColor)return this.pairConnectorColor;switch(this.colorBy){case"strand":case"firstOfPairStrand":case"pairOrientation":case"tag":return this.parent.color?"function"==typeof this.parent.color?this.parent.color(e):this.parent.color:"rgb(200, 200, 200)";default:return this.getAlignmentColor(e)}}getAlignmentColor(e){let t=af;t=this.parent.color?"function"==typeof this.parent.color?this.parent.color(e):this.parent.color:af;const i=this.colorBy;switch(i){case"strand":t=e.strand?this.posStrandColor:this.negStrandColor;break;case"firstOfPairStrand":e instanceof gd?t=e.firstOfPairStrand()?this.posStrandColor:this.negStrandColor:e.isPaired()&&(e.isFirstOfPair()?t=e.strand?this.posStrandColor:this.negStrandColor:e.isSecondOfPair()?t=e.strand?this.negStrandColor:this.posStrandColor:console.error("ERROR. Paired alignments are either first or second."));break;case"unexpectedPair":case"pairOrientation":if(this.pairOrientation&&e.pairOrientation){const i=uf[this.pairOrientation];if(i){const n=this.pairColors[i[e.pairOrientation]];if(n){t=n;break}}}if("pairOrientation"===i)break;case"tlen":case"fragmentLength":e.mate&&e.isMateMapped()&&(e.mate.chr!==e.chr?t=ff(e.mate.chr):this.parent.minTemplateLength&&Math.abs(e.fragmentLength)<this.parent.minTemplateLength?t=this.smallTLENColor:this.parent.maxTemplateLength&&Math.abs(e.fragmentLength)>this.parent.maxTemplateLength&&(t=this.largeTLENColor));break;case"tag":const n=e.tags()[this.colorByTag];void 0!==n&&(this.bamColorTag===this.colorByTag?t="rgb("+n+")":(this.tagColors||(this.tagColors=new ma("Set1")),t=this.tagColors.getColor(n)))}return t}}function df(e,t){let i;return i=e<5?.1:Math.max(.1,Math.min(1,.1+.9*(e-5)/15)),i=Math.round(10*i)/10,i<1&&(t=Do.addAlpha(t,i)),t}const uf={fr:{F1R2:"LR",F2R1:"LR",F1F2:"LL",F2F1:"LL",R1R2:"RR",R2R1:"RR",R1F2:"RL",R2F1:"RL"},rf:{R1F2:"LR",R2F1:"LR",R1R2:"LL",R2R1:"LL",F1F2:"RR",F2F1:"RR",F1R2:"RL",F2R1:"RL"},ff:{F2F1:"LR",R1R2:"LR",F2R1:"LL",R1F2:"LL",R2F1:"RR",F1R2:"RR",R2R1:"RL",F1F2:"RL"}};function ff(e){if(pf[e])return pf[e];if(pf["chr"+e]){const t=pf["chr"+e];return pf[e]=t,t}{const t=Do.randomRGB(0,255);return pf[e]=t,t}}const pf={chrX:"rgb(204, 153, 0)",chrY:"rgb(153, 204, 0)",chrUn:"rgb(50, 50, 50)",chr1:"rgb(80, 80, 255)",chrI:"rgb(139, 155, 187)",chr2:"rgb(206, 61, 50)",chrII:"rgb(206, 61, 50)",chr2a:"rgb(216, 71, 60)",chr2b:"rgb(226, 81, 70)",chr3:"rgb(116, 155, 88)",chrIII:"rgb(116, 155, 88)",chr4:"rgb(240, 230, 133)",chrIV:"rgb(240, 230, 133)",chr5:"rgb(70, 105, 131)",chr6:"rgb(186, 99, 56)",chr7:"rgb(93, 177, 221)",chr8:"rgb(128, 34, 104)",chr9:"rgb(107, 215, 107)",chr10:"rgb(213, 149, 167)",chr11:"rgb(146, 72, 34)",chr12:"rgb(131, 123, 141)",chr13:"rgb(199, 81, 39)",chr14:"rgb(213, 143, 92)",chr15:"rgb(122, 101, 165)",chr16:"rgb(228, 175, 105)",chr17:"rgb(59, 27, 83)",chr18:"rgb(205, 222, 183)",chr19:"rgb(97, 42, 121)",chr20:"rgb(174, 31, 99)",chr21:"rgb(231, 199, 111)",chr22:"rgb(90, 101, 94)",chr23:"rgb(204, 153, 0)",chr24:"rgb(153, 204, 0)",chr25:"rgb(51, 204, 0)",chr26:"rgb(0, 204, 51)",chr27:"rgb(0, 204, 153)",chr28:"rgb(0, 153, 204)",chr29:"rgb(10, 71, 255)",chr30:"rgb(71, 117, 255)",chr31:"rgb(255, 194, 10)",chr32:"rgb(255, 209, 71)",chr33:"rgb(153, 0, 51)",chr34:"rgb(153, 26, 0)",chr35:"rgb(153, 102, 0)",chr36:"rgb(128, 153, 0)",chr37:"rgb(51, 153, 0)",chr38:"rgb(0, 153, 26)",chr39:"rgb(0, 153, 102)",chr40:"rgb(0, 128, 153)",chr41:"rgb(0, 51, 153)",chr42:"rgb(26, 0, 153)",chr43:"rgb(102, 0, 153)",chr44:"rgb(153, 0, 128)",chr45:"rgb(214, 0, 71)",chr46:"rgb(255, 20, 99)",chr47:"rgb(0, 214, 143)",chr48:"rgb(20, 255, 177)"};let gf,mf;class bf extends Fl{constructor(e,t,i,n){super(e,t,i,n)}get contentDiv(){return this.$viewport.get(0)}initializationHelper(){let e;this.$multiLocusCloseButton=ft("<div>",{class:"igv-multi-locus-close-button"}),this.$viewport.append(this.$multiLocusCloseButton),this.$multiLocusCloseButton.get(0).appendChild(_i.createIcon("times-circle")),this.$multiLocusCloseButton.click((()=>{this.browser.removeMultiLocusPanel(this.referenceFrame)})),this.$rulerLabel=ft("<div>",{class:"igv-multi-locus-ruler-label"}),this.$viewport.append(this.$rulerLabel),e=document.createElement("div"),this.$rulerLabel.append(ft(e)),this.$rulerLabel.get(0).addEventListener("click",(async e=>{e.stopPropagation(),await this.browser.gotoMultilocusPanel(this.referenceFrame)})),this.$tooltip=ft("<div>",{class:"igv-ruler-tooltip"}),this.$tooltip.height(this.$viewport.height()),this.$viewport.append(this.$tooltip),this.$tooltipContent=ft("<div>"),this.$tooltip.append(this.$tooltipContent),this.rulerSweeper=new pd(this,this.$viewport.get(0).parentElement,this.browser,this.referenceFrame),this.attachMouseHandlers(Ml.isWholeGenomeView(this.referenceFrame.chr)),this.$tooltip.hide(),this.dismissLocusLabel()}presentLocusLabel(e){this.$multiLocusCloseButton.show(),this.$rulerLabel.show(),this.$rulerLabel.get(0).style.backgroundColor=ff(this.referenceFrame.chr);const t=this.$rulerLabel.get(0).querySelector("div"),{width:i}=this.$rulerLabel.get(0).getBoundingClientRect();t.innerHTML=`${this.referenceFrame.getMultiLocusLabel(e)}`;const{width:n}=t.getBoundingClientRect();n/i>.5&&(t.innerHTML=`${this.referenceFrame.getMultiLocusLabelBPLengthOnly(e)}`)}dismissLocusLabel(){this.$rulerLabel.hide(),this.$multiLocusCloseButton.hide()}attachMouseHandlers(e){if(this.namespace=`.ruler_track_viewport_${this.browser.referenceFrameList.indexOf(this.referenceFrame)}`,this.$viewport.off(this.namespace),!0===e){const e=this.browser.referenceFrameList.indexOf(this.referenceFrame),t=`click${this.namespace}`;this.$viewport.on(t,(t=>{const{x:i}=_t.translateMouseCoordinates(t,this.$viewport.get(0)),n=Math.round(this.referenceFrame.start+this.referenceFrame.toBP(i));let r;const{chr:s}=this.browser.genome.getChromosomeCoordinate(n);if(1===this.browser.referenceFrameList.length)r=s;else{let t=this.browser.referenceFrameList.map((({locusSearchString:e})=>e));t[e]=s,r=t.join(" ")}this.browser.search(r)})),this.$viewport.get(0).style.cursor="pointer"}else this.$viewport.get(0).style.cursor="default"}mouseMove(e){if(!0===this.browser.cursorGuideVisible){void 0===mf?(mf=this,this.$tooltip.show()):mf.guid!==this.guid?(mf.$tooltip&&mf.$tooltip.hide(),this.$tooltip.show(),mf=this):this.$tooltip.show();if(this.browser.isMultiLocusWholeGenomeView()||Ml.isWholeGenomeView(this.referenceFrame.chr))return void this.$tooltip.hide();const{x:t}=_t.translateMouseCoordinates(e,this.$viewport.get(0)),{start:i,bpPerPixel:n}=this.referenceFrame,r=Math.round(.5+i+Math.max(0,t)*n);this.$tooltipContent.text(Wi(r));const{width:s}=this.$tooltipContent.get(0).getBoundingClientRect(),{width:o}=this.$viewport.get(0).getBoundingClientRect();this.$tooltip.css({left:`${No(t,0,o-s)}px`}),clearTimeout(gf),gf=setTimeout((()=>{this.$tooltip&&this.$tooltip.hide()}),1e4)}}startSpinner(){}stopSpinner(){}dispose(){this.rulerSweeper.dispose(),super.dispose()}}class wf extends Fl{constructor(e,t,i,n){super(e,t,i,n)}initializationHelper(){this.canvas=document.createElement("canvas"),this.canvas.className="igv-ideogram-canvas",this.$viewport.append(ft(this.canvas)),this.ideogram_ctx=this.canvas.getContext("2d"),this.addMouseHandlers()}addMouseHandlers(){this.addViewportClickHandler(this.$viewport.get(0))}addViewportClickHandler(e){this.boundClickHandler=function(e){const{xNormalized:t,width:i}=_t.translateMouseCoordinates(e,this.ideogram_ctx.canvas),{bpLength:n}=this.browser.genome.getChromosome(this.referenceFrame.chr),r=this.referenceFrame.bpPerPixel*i/n;let s=t;s-r/2<0&&(s=r/2);s+r/2>1&&(s=1-r/2);const o=Math.round((s-r/2)*n),a=Math.round((s+r/2)*n);this.referenceFrame.start=o,this.referenceFrame.end=a,this.referenceFrame.bpPerPixel=(a-o)/i,this.browser.updateViews(this.referenceFrame,this.browser.trackViews,!0)}.bind(this),e.addEventListener("click",this.boundClickHandler)}setWidth(e){this.$viewport.width(e)}drawSVGWithContext(e,t,i,n,r,s,o){e.saveWithTranslationAndClipRect(n,r,s,t,i,o),this.trackView.track.draw({context:e,referenceFrame:this.referenceFrame,pixelWidth:t,pixelHeight:i}),e.restore()}repaint(){this.draw({referenceFrame:this.referenceFrame})}draw({referenceFrame:e}){ya.configureHighDPICanvas(this.ideogram_ctx,this.$viewport.width(),this.$viewport.height()),this.trackView.track.draw({context:this.ideogram_ctx,referenceFrame:e,pixelWidth:this.$viewport.width(),pixelHeight:this.$viewport.height()})}startSpinner(){}stopSpinner(){}}function vf(e,t,i,n){if("ruler"===e.track.type)return new bf(e,t,i,n);if("ideogram"===e.track.id)return new wf(e,t,i,n);return new Fl(e,t,i,n)}const yf={textAlign:"start",textBaseline:"bottom",strokeStyle:"black",fillStyle:"black"};class _f{constructor(e,t,i,n){this.guid=_t.guid(),this.trackView=e,this.browser=e.browser,this.viewport=_t.div({class:"igv-viewport"}),t.appendChild(this.viewport),e.track.height&&(this.viewport.style.height=`${e.track.height}px`),this.canvas=document.createElement("canvas"),this.viewport.appendChild(this.canvas),this.ctx=this.canvas.getContext("2d"),this.trackScrollDelta=0,this.contentTop=0,this.setWidth(n),!1===this.browser.showSampleNames&&this.hide(),this.addMouseHandlers()}checkCanvas(){const e=window.devicePixelRatio,t=this.viewport.clientHeight,i=this.browser.sampleNameViewportWidth;if(this.canvas.width!==i*e||this.canvas.height!==t*e){const n=this.canvas;n.width=i*e,n.height=t*e,n.style.width=`${i}px`,n.style.height=`${t}px`,this.ctx=this.canvas.getContext("2d"),this.ctx.scale(e,e)}}setTop(e){if("function"==typeof this.trackView.track.getSamples){this.contentTop=e;const t=this.trackView.track.getSamples();this.repaint(t)}}setWidth(e){this.viewport.innerWidth=e,this.checkCanvas()}show(){this.viewport.style.display="block"}hide(){this.viewport.style.display="none"}async repaint(e){this.checkCanvas(),this.draw({context:this.ctx,samples:e})}draw({context:e,samples:t}){if(!t||0===t.names.length)return;!function(e,{textAlign:t,textBaseline:i,strokeStyle:n,fillStyle:r},s){const o=Math.min(s,10);e.font=`${o}px sans-serif`,e.textAlign=t,e.textBaseline=i,e.fillStyle=r}(e,yf,t.height);e.clearRect(0,0,e.canvas.width,e.canvas.height),e.fillStyle=function(e){const{r:t,g:i,b:n}=pa[e];return`rgb(${t},${i},${n})`}("lead");const i=this.viewport.getBoundingClientRect().height;let n=(t.yOffset||0)+this.contentTop;for(let r of t.names){if(n>i)break;if(n+t.height>0){const i=r,s=xf(e,i,n,t.height);e.fillText(i,4,s)}n+=t.height}}renderSVGContext(e,{deltaX:t,deltaY:i}){if("function"==typeof this.trackView.track.getSamples){const n=this.trackView.track.getSamples(),r=0,{width:s,height:o}=this.viewport.getBoundingClientRect(),a=`${(this.trackView.track.name||this.trackView.track.id).replace(/\W/g,"")}_sample_names_guid_${_t.guid()}`;e.saveWithTranslationAndClipRect(a,t,i+r,s,o,-r),this.draw({context:e,samples:n}),e.restore()}}addMouseHandlers(){this.addViewportContextMenuHandler(this.viewport)}removeMouseHandlers(){this.removeViewportContextMenuHandler(this.viewport)}addViewportContextMenuHandler(e){this.boundContextMenuHandler=function(e){e.preventDefault(),e.stopPropagation();const t={label:"Name Panel Width",value:this.browser.sampleNameViewportWidth,callback:e=>{this.browser.sampleNameViewportWidth=parseInt(e);for(let{sampleNameViewport:e}of this.browser.trackViews)e.setWidth(this.browser.sampleNameViewportWidth);this.browser.layoutChange()}};this.browser.inputDialog.present(t,e)}.bind(this),e.addEventListener("contextmenu",this.boundContextMenuHandler)}removeViewportContextMenuHandler(e){e.removeEventListener("contextmenu",this.boundContextMenuHandler)}dispose(){this.removeMouseHandlers(),this.viewport.remove()}}function xf(e,t,i,n){return i+n-function(e,t,i){const{actualBoundingBoxAscent:n,actualBoundingBoxDescent:r}=e.measureText(t);return(i-(n+r))/2}(e,t,n)}const kf=function(e){this.popover=_t.div({class:"igv-menu-popup"}),e.appendChild(this.popover);const t=_t.div({class:"igv-menu-popup-header"});this.popover.appendChild(t),ki.attachDialogCloseHandlerWithParent(t,(()=>this.hide())),this.popoverContent=_t.div(),this.popover.appendChild(this.popoverContent),Si(this.popover,t),t.addEventListener("click",(e=>{e.stopPropagation(),e.preventDefault()})),this.hide()};kf.prototype.hide=function(){this.popover.style.display="none"},kf.prototype.presentMenuList=function(e){if(Cf(),e.length>0){this.popoverContent.innerHTML="",e=Ui.trackMenuItemListHelper(e,this);for(let t of e){t.init&&t.init();let i=t.object;0===e.indexOf(t)&&i.removeClass("igv-track-menu-border-top"),i.hasClass("igv-track-menu-border-top")||i.hasClass("igv-menu-popup-check-container")||i.is("div")&&i.addClass("igv-menu-popup-shim"),this.popoverContent.appendChild(i.get(0))}this.popover.style.display="flex";const{width:t}=this.popover.getBoundingClientRect();this.popover.style.left=-t+"px",this.popover.style.top="0px"}},kf.prototype.presentTrackContextMenu=function(e,t){this.popoverContent.innerHTML="";const i=(n=t,r=this.popover,n.map((e=>{let t;if("string"==typeof e&&"<hr/>"===e)t=document.createElement("hr");else if("string"==typeof e)t=_t.div({class:"context-menu"}),t.innerHTML=e;else if("Node"==typeof e)t=e;else{if("function"==typeof e.init&&e.init(),"checkbox"===e.type)t=Hi("Show all bases",e.value);else if("color"===e.type){const n=new Pi({parent:r.parentElement,width:364});n.configure(void 0,{color:t=>e.click(t)}),t=_t.div({class:"context-menu"}),"string"==typeof e.label&&(t.innerHTML=e.label);const s=e=>{n.show(),_t.hide(r),e.preventDefault(),e.stopPropagation()};t.addEventListener("click",s),t.addEventListener("touchend",s),t.addEventListener("mouseup",(function(e){e.preventDefault(),e.stopPropagation()}))}else t=_t.div({class:"context-menu"}),"string"==typeof e.label&&(t.innerHTML=e.label);if(e.click&&"color"!==e.type){function i(t){e.click(),_t.hide(r),t.preventDefault(),t.stopPropagation()}t.addEventListener("click",i),t.addEventListener("touchend",i),t.addEventListener("mouseup",(function(e){e.preventDefault(),e.stopPropagation()}))}}return{el:t,init:e.init}})));var n,r;for(let{el:e}of i)this.popoverContent.appendChild(e);!function(e,t){t.style.display="flex";const{x:i,y:n}=_t.translateMouseCoordinates(e,t.parentNode),{width:r}=t.getBoundingClientRect(),s=i+r,{width:o}=t.parentNode.getBoundingClientRect();t.style.left=`${s>o?i-(s-o):i}px`,t.style.top=`${n}px`}(e,this.popover)},kf.prototype.dispose=function(){this.popoverContent.innerHTML="",this.popover.innerHTML="",Object.keys(this).forEach((function(e){this[e]=void 0}))};const Cf=()=>{const e=document.querySelectorAll(".igv-menu-popup");for(let t=0;t<e.length;t++)e[t].style.display="none"},Sf=new Set(["ruler","ideogram"]),Af=new Set(["ruler","sequence","ideogram"]);class Ef{constructor(e,t,i){this.browser=e,this.track=i,i.trackView=this,this.addDOMToColumnContainer(e,t,e.referenceFrameList)}startSpinner(){this.viewports&&this.viewports.length>0&&this.viewports[0].startSpinner()}stopSpinner(){this.viewports&&this.viewports.length>0&&this.viewports[0].stopSpinner()}addDOMToColumnContainer(e,t,i){this.axis=this.createAxis(e,this.track),this.viewports=[];const n=e.calculateViewportWidth(i.length),r=t.querySelectorAll(".igv-column");for(let e=0;e<r.length;e++){const t=vf(this,r[e],i[e],n);this.viewports.push(t)}this.sampleNameViewport=new _f(this,e.columnContainer.querySelector(".igv-sample-name-column"),void 0,e.sampleNameViewportWidth),this.createTrackScrollbar(e),this.createTrackDragHandle(e),this.createTrackGearPopup(e)}createAxis(e,t){const i=_t.div();if(e.columnContainer.querySelector(".igv-axis-column").appendChild(i),i.style.height=`${t.height}px`,"function"==typeof t.paintAxis){t.dataRange&&i.addEventListener("click",(()=>{e.dataRangeDialog.configure(this),e.dataRangeDialog.present(ft(e.columnContainer))}));const{width:n,height:r}=i.getBoundingClientRect();this.axisCanvas=document.createElement("canvas"),this.axisCanvas.style.width=`${n}px`,this.axisCanvas.style.height=`${r}px`,i.appendChild(this.axisCanvas)}return i}resizeAxisCanvas(e,t){this.axis.style.width=`${e}px`,this.axis.style.height=`${t}px`,"function"==typeof this.track.paintAxis&&(this.axisCanvas.style.width=`${e}px`,this.axisCanvas.style.height=`${t}px`)}removeDOMFromColumnContainer(){this.boundAxisClickHander&&this.removeAxisEventListener(this.axis),this.axis.remove();for(let e of this.viewports)e.$viewport.remove();this.sampleNameViewport.dispose(),this.removeTrackScrollMouseHandlers(),this.outerScroll.remove(),this.removeTrackDragMouseHandlers(),this.dragHandle.remove(),this.removeTrackGearMouseHandlers(),this.gearContainer.remove()}renderSVGContext(e,{deltaX:t,deltaY:i}){!function(e,t,i,n,r){if("function"==typeof t.paintAxis){const{y:s,width:o,height:a}=i.getBoundingClientRect(),l=`${(t.name||t.id).replace(/\W/g,"")}_axis_guid_${_t.guid()}`;e.saveWithTranslationAndClipRect(l,n,s+r,o,a,0),t.paintAxis(e,o,a),e.restore()}}(e,this.track,this.axisCanvas,t,i);const{width:n}=this.axis.getBoundingClientRect(),{y:r}=this.viewports[0].$viewport.get(0).getBoundingClientRect();let s={deltaX:n+t,deltaY:r+i};for(let t of this.viewports){t.renderSVGContext(e,s);const{width:i}=t.$viewport.get(0).getBoundingClientRect();s.deltaX+=i}!0===this.browser.showSampleNames&&this.sampleNameViewport.renderSVGContext(e,s)}dataRange(){return this.track.dataRange?this.track.dataRange:void 0}setDataRange(e,t){void 0!==e&&(this.track.dataRange.min=e),void 0!==t&&(this.track.dataRange.max=t),this.track.autoscale=!1,this.repaintViews()}presentColorPicker(e){if(!1===Af.has(this.track.type)){const t=[],i=this.track.color||this.track.defaultColor;$i(i)&&t.push(i),this.track.altColor&&$i(this.track.altColor)&&t.push(this.track.altColor);const n=t.map((e=>e.startsWith("#")?e:e.startsWith("rgb(")?Do.rgbToHex(e):Do.colorNameToHex(e))),r={color:e=>{this.track.color=e,this.repaintViews()},altColor:e=>{this.track.altColor=e,this.repaintViews()}};this.browser.genericColorPicker.configure(n,r),this.browser.genericColorPicker.setActiveColorHandler(e),this.browser.genericColorPicker.show()}}setTrackHeight(e,t){t||(this.track.minHeight&&(e=Math.max(this.track.minHeight,e)),this.track.maxHeight&&(e=Math.min(this.track.maxHeight,e))),this.track.height=e,this.resizeAxisCanvas(this.axis.clientWidth,this.track.height),"function"==typeof this.track.paintAxis&&this.paintAxis();for(let{$viewport:t}of this.viewports)t.height(e);if(this.sampleNameViewport.viewport.style.height=`${e}px`,"function"!=typeof this.track.computePixelHeight)for(let t of this.viewports)t.setContentHeight(e);this.repaintViews(),!1===Sf.has(this.track.type)&&this.updateScrollbar(),this.dragHandle.style.height=`${e}px`,this.gearContainer.style.height=`${e}px`}updateScrollbar(){const e=this.viewports[0].$viewport.height();this.outerScroll.style.height=`${e}px`;const t=this.maxViewportContentHeight(),i=Math.round(e/t*e);t>e?(this.innerScroll.style.display="block",this.innerScroll.style.height=`${i}px`):this.innerScroll.style.display="none"}moveScroller(e){const t=ft(this.innerScroll).position().top+e,i=Math.min(Math.max(0,t),this.outerScroll.clientHeight-this.innerScroll.clientHeight);ft(this.innerScroll).css("top",`${i}px`);const n=this.maxViewportContentHeight(),r=-Math.round(i*(n/this.viewports[0].$viewport.height()));for(let e of this.viewports)e.setTop(r);this.sampleNameViewport.trackScrollDelta=e,this.sampleNameViewport.setTop(r)}isLoading(){for(let e of this.viewports)if(e.isLoading())return!0}repaintViews(){for(let e of this.viewports)e.isVisible()&&e.repaint();"function"==typeof this.track.paintAxis&&this.paintAxis(),this.repaintSamples()}repaintSamples(){if("function"==typeof this.track.getSamples){const e=this.track.getSamples();this.sampleNameViewport.repaint(e)}}setTrackLabelName(e){this.viewports.forEach((t=>t.setTrackLabel(e)))}resize(e){for(let t of this.viewports)t.setWidth(e)}async updateViews(){if(!this.browser||!this.browser.referenceFrameList)return;const e=this.viewports.filter((e=>e.isVisible()));if(e.forEach((e=>e.shift())),this.browser.dragObject)return;const t=e.filter((e=>e.needsRepaint())).filter((e=>e.checkZoomIn())),i=t.filter((e=>e.needsReload()));for(let e of i)await e.loadFeatures();if(this.disposed)return;if(this.track&&"function"==typeof this.track.variantRowCount&&i.length>0){let e=0;for(let t of this.viewports)t.featureCache&&t.featureCache.features&&(e=Math.max(e,t.featureCache.features.reduce(((e,t)=>Math.max(e,t.row||0)),0)));if(this.track.nVariantRows!==e+1){this.track.variantRowCount(e+1);for(let e of this.viewports)e.checkContentHeight()}}if(this.track.autoscale){let t=[];for(let i of e){const e=i.referenceFrame,n=e.start,r=n+e.toBP(i.getWidth());if(i.featureCache&&i.featureCache.features)if("function"==typeof i.featureCache.features.getMax){const e=i.featureCache.features.getMax(n,r);t.push({value:e})}else{const e=fa(i.featureCache.features,n,r);for(let i of e)t.push(i)}}"function"==typeof this.track.doAutoscale?this.track.dataRange=this.track.doAutoscale(t):this.track.dataRange=Aa(t)}const n=this.track.autoscale||this.track.autoscaleGroup||"ruler"===this.track.type;for(let i of e)t.includes(i)?i.repaint():n&&i.refresh();this.adjustTrackHeight(),this.repaintSamples(),this.updateRulerViewportLabels()}clearCachedFeatures(){for(let e of this.viewports)e.clearCache()}updateRulerViewportLabels(){const e=this.browser.calculateViewportWidth(this.viewports.length);for(let t of this.viewports)"ruler"===this.track.type&&(this.viewports.length>1?t.presentLocusLabel(e):t.dismissLocusLabel())}async getInViewFeatures(){if(!this.browser||!this.browser.referenceFrameList)return[];let e=[];const t=this.viewports.filter((e=>e.isVisible()));for(let i of t){const t=i.referenceFrame,{chr:n,start:r,bpPerPixel:s}=i.referenceFrame,o=r+t.toBP(i.getWidth());if((!i.featureCache||!i.featureCache.containsRange(n,r,o,s))&&await i.loadFeatures(),i.featureCache&&i.featureCache.features)if("function"==typeof i.featureCache.features.getMax){const t=i.featureCache.features.getMax(r,o);e.push({value:t})}else{const t="function"==typeof i.featureCache.queryFeatures?i.featureCache.queryFeatures(n,r,o):fa(i.featureCache.features,r,o);e=e.concat(t)}}return e}checkContentHeight(){for(let e of this.viewports)e.checkContentHeight();this.adjustTrackHeight()}adjustTrackHeight(){var e=this.maxViewportContentHeight();if(this.track.autoHeight?this.setTrackHeight(e,!1):this.track.paintAxis&&this.paintAxis(),!1===Sf.has(this.track.type)){const t=this.viewports[0].getContentTop(),i=this.viewports[0].$viewport.height(),n=Math.min(0,i-e);if(t<n)for(let e of this.viewports)e.setTop(n);this.updateScrollbar()}}createTrackScrollbar(e){const t=_t.div();if(e.columnContainer.querySelector(".igv-scrollbar-column").appendChild(t),t.style.height=`${this.track.height}px`,this.outerScroll=t,!1===Sf.has(this.track.type)){const i=_t.div();t.appendChild(i),this.innerScroll=i,this.addTrackScrollMouseHandlers(e)}}createTrackDragHandle(e){const t="ideogram"===this.track.type||"ruler"===this.track.type?"igv-track-drag-shim":"igv-track-drag-handle";this.dragHandle=_t.div({class:t}),e.columnContainer.querySelector(".igv-track-drag-column").appendChild(this.dragHandle),this.dragHandle.style.height=`${this.track.height}px`,this.addTrackDragMouseHandlers(e)}createTrackGearPopup(e){this.gearContainer=_t.div(),e.columnContainer.querySelector(".igv-gear-menu-column").appendChild(this.gearContainer),this.gearContainer.style.height=`${this.track.height}px`,!0===this.track.ignoreTrackMenu||(this.gear=_t.div(),this.gearContainer.appendChild(this.gear),this.gear.appendChild(_i.createIcon("cog")),this.trackGearPopup=new kf(this.gear),this.addTrackGearMouseHandlers())}addAxisEventListener(e){this.boundAxisClickHander=function(e){this.browser.dataRangeDialog.configure(this),this.browser.dataRangeDialog.present(ft(this.browser.columnContainer))}.bind(this),e.addEventListener("click",this.boundAxisClickHander)}removeAxisEventListener(e){e.removeEventListener("click",this.boundAxisClickHander)}addTrackScrollMouseHandlers(e){this.boundTrackScrollMouseDownHandler=function(t){t.stopPropagation();const{y:i}=_t.pageCoordinates(t);ft(this.innerScroll).data("yDown",i.toString()),this.boundColumnContainerMouseMoveHandler=function(e){e.stopPropagation();const{y:t}=_t.pageCoordinates(e);this.moveScroller(t-parseInt(ft(this.innerScroll).data("yDown"))),ft(this.innerScroll).data("yDown",t.toString())}.bind(this),e.columnContainer.addEventListener("mousemove",this.boundColumnContainerMouseMoveHandler)}.bind(this),this.innerScroll.addEventListener("mousedown",this.boundTrackScrollMouseDownHandler),this.boundColumnContainerMouseUpHandler=function(t){e.columnContainer.removeEventListener("mousemove",this.boundColumnContainerMouseMoveHandler)}.bind(this),e.columnContainer.addEventListener("mouseup",this.boundColumnContainerMouseUpHandler)}removeTrackScrollMouseHandlers(){!1===Sf.has(this.track.type)&&(this.innerScroll.removeEventListener("mousedown",this.boundTrackScrollMouseDownHandler),this.browser.columnContainer.removeEventListener("mouseup",this.boundColumnContainerMouseUpHandler),this.browser.columnContainer.removeEventListener("mousemove",this.boundColumnContainerMouseMoveHandler))}addTrackDragMouseHandlers(e){if("ideogram"===this.track.id||"ruler"===this.track.id);else{let t;function i(i){i.preventDefault(),t=i.target,t.classList.add("igv-track-drag-handle-hover"),e.startTrackDrag(this)}function n(i){e.endTrackDrag(),t&&i.target!==t&&t.classList.remove("igv-track-drag-handle-hover"),t=void 0}function r(i){i.preventDefault(),void 0===t&&i.target.classList.add("igv-track-drag-handle-hover"),e.updateTrackDrag(this)}function s(e){e.preventDefault(),void 0===t&&e.target.classList.remove("igv-track-drag-handle-hover")}this.boundTrackDragMouseDownHandler=i.bind(this),this.dragHandle.addEventListener("mousedown",this.boundTrackDragMouseDownHandler),this.boundDocumentTrackDragMouseUpHandler=n.bind(this),document.addEventListener("mouseup",this.boundDocumentTrackDragMouseUpHandler),this.boundTrackDragMouseEnterHandler=r.bind(this),this.dragHandle.addEventListener("mouseenter",this.boundTrackDragMouseEnterHandler),this.dragHandle.addEventListener("mouseout",(e=>{e.preventDefault(),void 0===t&&e.target.classList.remove("igv-track-drag-handle-hover")})),this.boundTrackDragMouseOutHandler=s.bind(this),this.dragHandle.addEventListener("mouseout",this.boundTrackDragMouseOutHandler)}}removeTrackDragMouseHandlers(){"ideogram"===this.track.id||"ruler"===this.track.id||(this.dragHandle.removeEventListener("mousedown",this.boundTrackDragMouseDownHandler),document.removeEventListener("mouseup",this.boundDocumentTrackDragMouseUpHandler),this.dragHandle.removeEventListener("mouseup",this.boundTrackDragMouseEnterHandler),this.dragHandle.removeEventListener("mouseout",this.boundTrackDragMouseOutHandler))}addTrackGearMouseHandlers(){if(!0===this.track.ignoreTrackMenu);else{function e(e){e.preventDefault(),e.stopPropagation(),this.trackGearPopup.presentMenuList(Ui.trackMenuItemList(this))}this.boundTrackGearClickHandler=e.bind(this),this.gear.addEventListener("click",this.boundTrackGearClickHandler)}}removeTrackGearMouseHandlers(){!0===this.track.ignoreTrackMenu||this.gear.removeEventListener("click",this.boundTrackGearClickHandler)}dispose(){this.removeAxisEventListener(this.axis),this.axis.remove();for(let e of this.viewports)e.dispose();this.sampleNameViewport.dispose(),this.removeTrackScrollMouseHandlers(),this.outerScroll.remove(),this.removeTrackDragMouseHandlers(),this.dragHandle.remove(),this.removeTrackGearMouseHandlers(),this.gearContainer.remove(),"function"==typeof this.track.dispose&&this.track.dispose();for(let e of Object.keys(this))this[e]=void 0;this.alert&&this.alert.container.remove(),this.disposed=!0}paintAxis(){if("function"==typeof this.track.paintAxis){const{width:e,height:t}=this.axisCanvas.getBoundingClientRect(),i=window.devicePixelRatio||1;this.axisCanvas.height=i*t,this.axisCanvas.width=i*e;const n=this.axisCanvas.getContext("2d");n.scale(i,i),this.track.paintAxis(n,e,t)}}maxViewportContentHeight(){return Math.max(this.viewports.map((e=>e.getContentHeight())))}}const Tf="rgb(150, 150, 150)";class Mf extends Th{static defaults={height:50,flipAxis:!1,logScale:!1,windowFunction:"mean",graphType:"bar",autoscale:!0,normalize:void 0,scaleFactor:void 0};constructor(e,t){super(e,t)}init(e){super.init(e),this.type="wig",this.featureType="numeric",this.paintAxis=lu;const t=e.format?e.format.toLowerCase():e.format;e.featureSource?(this.featureSource=e.featureSource,delete e.featureSource):this.featureSource="bigwig"===t?new Xc(e,this.browser.genome):"tdf"===t?new td(e,this.browser.genome):ld(e,this.browser.genome),void 0===e.max||!0===e.autoscale?this.autoscale=!0:this.dataRange={min:e.min||0,max:e.max}}async postInit(){const e=await this.getHeader();this.disposed||e&&this.setTrackProperties(e)}async getFeatures(e,t,i,n){const r=await this.featureSource.getFeatures({chr:e,start:t,end:i,bpPerPixel:n,visibilityWindow:this.visibilityWindow,windowFunction:this.windowFunction});if(this.normalize&&this.featureSource.normalizationFactor){const e=this.featureSource.normalizationFactor;for(let t of r)t.value*=e}if(this.scaleFactor){const e=this.scaleFactor;for(let t of r)t.value*=e}return r}menuItemList(){let e=[];return void 0!==this.flipAxis&&(e.push("<hr>"),e.push({label:"Flip y-axis",click:()=>{this.flipAxis=!this.flipAxis,this.trackView.repaintViews()}})),e=e.concat(Ui.numericDataMenuItems(this.trackView)),e}async getHeader(){return"function"==typeof this.featureSource.getHeader&&(this.header=await this.featureSource.getHeader()),this.header}getScaleFactor(e,t,i,n){return n?i/(Math.log10(t+1)-(e<=0?0:Math.log10(e+1))):i/(t-e)}computeYPixelValue(e,t){return(this.flipAxis?e-this.dataRange.min:this.dataRange.max-e)*t}computeYPixelValueInLogScale(e,t){let i=this.dataRange.max,n=this.dataRange.min;return i<=0?0:(n<=-1&&(n=0),n=n<=0?0:Math.log10(n+1),i=Math.log10(i+1),e=Math.log10(e+1),(this.flipAxis?e-n:i-e)*t)}draw(e){const t=e.features,i=e.context,n=e.bpPerPixel,r=e.bpStart,s=e.pixelWidth;e.pixelHeight;const o=r+s*n+1,a=this.color||Tf;let l;"string"==typeof a&&a.startsWith("rgb(")&&(l=Do.addAlpha(a,.1));const h=this.getScaleFactor(this.dataRange.min,this.dataRange.max,e.pixelHeight,this.logScale),c=e=>this.logScale?this.computeYPixelValueInLogScale(e,h):this.computeYPixelValue(e,h);if(t&&t.length>0&&(void 0===this.dataRange.min&&(this.dataRange.min=0),this.dataRange.max>this.dataRange.min)){let s,a=-1;const h=c(0);for(let e of t){if(e.end<r)continue;if(e.start>o)break;const t=Math.floor((e.start-r)/n);if(isNaN(t))continue;let l=c(e.value);const d=Math.ceil((e.end-r)/n),u=Math.max(1,d-t),f=this.getColorForFeature(e);if("points"===this.graphType){const e=this.config.pointSize||3,n=t+u/2;ya.fillCircle(i,n,l,e/2,{fillStyle:f,strokeStyle:f})}else if("line"===this.graphType)null!=s&&ya.strokeLine(i,a,s,t,l,{fillStyle:f,strokeStyle:f}),ya.strokeLine(i,t,l,t+u,l,{fillStyle:f,strokeStyle:f});else{const e=l-h;ya.fillRect(i,t,h,u,e,{fillStyle:f})}a=t+u,s=l}if(this.dataRange.min<0){const t=this.dataRange.max/(this.dataRange.max-this.dataRange.min)*e.pixelHeight;ya.strokeLine(i,0,t,e.pixelWidth,t,{strokeStyle:l})}}if(this.config.hasOwnProperty("guideLines"))for(let t of this.config.guideLines)if(t.hasOwnProperty("color")&&t.hasOwnProperty("y")&&t.hasOwnProperty("dotted")){let i=c(t.y),n={strokeStyle:t.color,strokeWidth:2};t.dotted?ya.dashedLine(e.context,0,i,e.pixelWidth,i,5,n):ya.strokeLine(e.context,0,i,e.pixelWidth,i,n)}}popupData(e,t){if(void 0===t&&(t=this.clickedFeatures(e)),t&&t.length>0){const i=e.genomicLocation,n=[];t.sort((function(e,t){return Math.abs((e.start+e.end)/2-i)-Math.abs((t.start+t.end)/2-i)}));const r=t.length>10?t.slice(0,10):t;r.sort((function(e,t){return e.start-t.start}));for(let e of r)if(e){n.length>0&&n.push("<hr/>");let t=e.end-e.start==1?Wi(e.start+1):Wi(e.start+1)+"-"+Wi(e.end);n.push({name:"Position:",value:t}),n.push({name:"Value:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;",value:Wi(e.value)})}return r.length<t.length&&n.push("<hr/>..."),n}return[]}get supportsWholeGenome(){return!this.config.indexURL&&!1!==this.config.supportsWholeGenome}getColorForFeature(e){let t=e.value<0&&this.altColor?this.altColor:this.color||Tf;return"function"==typeof t?t(e.value):t}dispose(){this.trackView=void 0}}function Rf(e){this.thresholds=e.thresholds,this.colors=e.colors}function Lf(e){this.scale=e,this.lowColor="rgb("+e.lowR+","+e.lowG+","+e.lowB+")",this.highColor="rgb("+e.highR+","+e.highG+","+e.highB+")",this.diff=e.high-e.low}Rf.prototype.getColor=function(e){for(let t of this.thresholds)if(e<t)return this.colors[this.thresholds.indexOf(t)];return this.colors[this.colors.length-1]},Lf.prototype.getColor=function(e){var t,i=this.scale;return e<=i.low?this.lowColor:e>=i.high?this.highColor:(t=(e-i.low)/this.diff,"rgb("+Math.floor(i.lowR+t*(i.highR-i.lowR))+","+Math.floor(i.lowG+t*(i.highG-i.lowG))+","+Math.floor(i.lowB+t*(i.highB-i.lowB))+")")};class If{constructor(e){this.color=e}getColor(){return this.color}}class Nf extends Th{constructor(e,t){super(e,t)}init(e){if(super.init(e),this.type=e.type||"seg","maf"===this.type&&(this.type="mut"),this.isLog=e.isLog,this.displayMode=e.displayMode||"EXPANDED",this.height=e.height||300,this.maxHeight=e.maxHeight||500,this.squishedRowHeight=e.sampleSquishHeight||e.squishedRowHeight||2,this.expandedRowHeight=e.sampleExpandHeight||e.expandedRowHeight||13,this.sampleHeight=this.squishedRowHeight,e.color?this.color=e.color:(this.posColorScale=e.posColorScale||new Lf({low:.1,lowR:255,lowG:255,lowB:255,high:1.5,highR:255,highG:0,highB:0}),this.negColorScale=e.negColorScale||new Lf({low:-1.5,lowR:0,lowG:0,lowB:255,high:-.1,highR:255,highG:255,highB:255}),"mut"===this.type&&(this.colorTable=new ba(e.colorTable||Ff))),this.sampleKeys=[],this.sampleNames=new Map,e.samples){for(let t of e.samples)this.sampleKeys.push(t),this.sampleNames.set(t,t);this.explicitSamples=!0}const t=Object.assign({},this.config);t.maxWGCount=t.maxWGCount||Number.MAX_SAFE_INTEGER,this.featureSource=ld(t,this.browser.genome),this.initialSort=e.sort}async postInit(){"function"==typeof this.featureSource.getHeader&&(this.header=await this.featureSource.getHeader(),this.disposed)||this.header&&this.setTrackProperties(this.header)}menuItemList(){const e=[],t={SQUISHED:"Squish",EXPANDED:"Expand",FILL:"Fill"};e.push("<hr/>"),e.push("DisplayMode:");const i="seg"===this.type?["SQUISHED","EXPANDED","FILL"]:["SQUISHED","EXPANDED"];for(let n of i){const i=Hi(t[n],n===this.displayMode);e.push({object:ft(i),click:()=>{this.displayMode=n,this.config.displayMode=n,this.trackView.checkContentHeight(),this.trackView.repaintViews(),this.trackView.moveScroller(this.trackView.sampleNameViewport.trackScrollDelta)}})}return e}hasSamples(){return!0}getSamples(){return{names:this.sampleKeys.map((e=>this.sampleNames.get(e))),height:this.sampleHeight,yOffset:0}}async getFeatures(e,t,i){const n=await this.featureSource.getFeatures({chr:e,start:t,end:i});if(this.initialSort){const e=this.initialSort;this.sortSamples(e.chr,e.start,e.end,e.direction,n),this.initialSort=void 0}return n}draw({context:e,renderSVG:t,pixelTop:i,pixelWidth:n,pixelHeight:r,features:s,bpPerPixel:o,bpStart:a}){if(ya.fillRect(e,0,i,n,r,{fillStyle:"rgb(255, 255, 255)"}),s&&s.length>0){this.checkForLog(s),this.updateSampleKeys(s);const t={};let l;switch(this.sampleKeys.forEach((function(e,i){t[e]=i})),this.displayMode){case"FILL":this.sampleHeight=r/this.sampleKeys.length,l=0;break;case"SQUISHED":this.sampleHeight=this.squishedRowHeight,l=0;break;default:this.sampleHeight=this.expandedRowHeight,l=1}const h=this.sampleHeight;for(let e of s)e.pixelRect=void 0;const c=i+r,d=a+n*o+1,u=o;this.sampleYStart=void 0;for(let n of s){if(n.end<a)continue;if(n.start>d)break;const r=n.sampleKey||n.sample;n.row=t[r];const s=n.row*h+l;void 0===this.sampleYStart&&(this.sampleYStart=s);if(s+h<i||s>c)continue;const o=Math.max(n.start,a);let f=Math.round((o-a)/u);const p=Math.min(n.end,d),g=Math.round((p-a)/u);let m,b,w=Math.max(1,g-f);if(this.color?m="function"==typeof this.color?this.color(n):this.color:this.colorTable&&(m=this.colorTable.getColor(n.value.toLowerCase())),"mut"===this.type)b=h-2*l,w<3&&(w=3,f-=1);else{let e=n.value;this.isLog||(e=Fo(e/2)),m=e<-.1?this.negColorScale.getColor(e):e>.1?this.posColorScale.getColor(e):"white";let t=h;if(h<.25){const i=.1+2*Math.abs(e);t=Math.min(1,i*h)}b=t-2*l}n.pixelRect={x:f,y:s,w:w,h:b},e.fillStyle=m,e.fillRect(f,s,w,b)}}}checkForLog(e){if(void 0===this.isLog){this.isLog=!1;for(let t of e)if(t.value<0)return void(this.isLog=!0)}}computePixelHeight(e){if(!e)return 0;const t="SQUISHED"===this.displayMode?this.squishedRowHeight:this.expandedRowHeight;return this.updateSampleKeys(e),this.sampleKeys.length*t}async sortSamples(e,t,i,n,r){if(r||(r=await this.featureSource.getFeatures({chr:e,start:t,end:i})),!r)return;this.updateSampleKeys(r);const s={},o="ASC"===n?1:-1,a=()=>{const e=i-t+1;for(let n of r){if(n.end<t)continue;if(n.start>i)break;const r=Math.max(t,n.start),o=(Math.min(i,n.end)-r)/e,a=n.sampleKey||n.sample,l=s[a]||0;s[a]=l+o*n.value}this.sampleKeys.sort((function(e,t){let i=s[e],n=s[t];return i||(i=o*Number.MAX_VALUE),n||(n=o*Number.MAX_VALUE),i===n?0:i>n?o:-1*o}))},l=()=>{for(let e of r){if(e.end<t)continue;if(e.start>i)break;const n=e.sampleKey||e.sample;(!s.hasOwnProperty(n)||e.value.localeCompare(s[n])>0)&&(s[n]=e.value)}this.sampleKeys.sort((function(e,t){let i=s[e]||"",n=s[t]||"";return o*i.localeCompare(n)}))};"mut"===this.type?l():a(),this.trackView.repaintViews()}clickedFeatures(e){const t=super.clickedFeatures(e),i=e.y;return t.filter((function(e){const t=e.pixelRect;return t&&i>=t.y&&i<=t.y+t.h}))}hoverText(e){const t=this.clickedFeatures(e);if(t&&t.length>0)return`${t[0].sample}: ${t[0].value}`}popupData(e,t){void 0===t&&(t=this.clickedFeatures(e));const i=[];for(let e of t){i.length>0&&(i.push("<hr/>"),i.push("<hr/>"));const t=e._f||e,n="function"==typeof t.popupData?t.popupData(this.type,this.browser.genome.id):this.extractPopupData(t);Array.prototype.push.apply(i,n)}return i}contextMenuItemList(e){const t=e.viewport.referenceFrame,i=e.genomicLocation,n=this.config.sort?"ASC"===this.config.sort.direction?"DESC":"ASC":"DESC",r=t.toBP(2.5),s=t=>{const i=e.viewport.cachedFeatures;this.sortSamples(t.chr,t.start,t.end,t.direction,i)};return[{label:"seg"===this.type?"Sort by value":"Sort by type",click:t=>{const o={direction:n,chr:e.viewport.referenceFrame.chr,start:i-r,end:i+r};s(o),this.config.sort=o}}]}get supportsWholeGenome(){return(!1===this.config.indexed||!this.config.indexURL)&&!1!==this.config.supportsWholeGenome}updateSampleKeys(e){if(!this.explicitSamples)for(let t of e){const e=t.sampleKey||t.sample;this.sampleNames.has(e)||(this.sampleNames.set(e,t.sample),this.sampleKeys.push(e))}}}const Ff={indel:"rgb(0,200,0)","targeted region":"rgb(236,155,43)",truncating:"rgb(\t150,0,0)","non-coding transcript":"rgb(0,0,150)",synonymous:"rgb(109,165,95)",silent:"rgb(109,135,80)",missense_mutation:"rgb(72,130,187)",missense:"rgb(72,130,187)","splice site":"rgb(143,83,155)",splice_region:"rgb(143,83,155)",nonsense:"rgb(216, 57,81)",nonsense_mutation:"rgb(216, 57,81)",frame_shift_del:"rgb(226,135,65)",frame_shift_ins:"rgb(226,135,65)",in_frame_del:"rgb(247,235,94)",in_frame_ins:"rgb(247,235,94)","*other*":"rgb(159,91,50)"};class Bf extends Th{constructor(e,t){super(e,t),this.type="merged",this.featureType="numeric",this.paintAxis=lu,this.graphType=e.graphType}init(e){if(!e.tracks)throw Error("Error: no tracks defined for merged track"+e);super.init(e)}async postInit(){this.tracks=[];const e=[];for(let t of this.config.tracks){t.isMergedTrack=!0;const i=await this.browser.createTrack(t);i?(i.autoscale=!1,this.tracks.push(i)):console.warn("Could not create track "+t),"function"==typeof i.postInit&&e.push(i.postInit())}this.flipAxis=!!this.config.flipAxis&&this.config.flipAxis,this.logScale=!!this.config.logScale&&this.config.logScale,this.autoscale=this.config.autoscale||void 0===this.config.max,this.autoscale||(this.dataRange={min:this.config.min||0,max:this.config.max});for(let e of this.tracks)e.autoscale=!1,e.dataRange=this.dataRange;return this.height=this.config.height||50,Promise.all(e)}get height(){return this._height}set height(e){if(this._height=e,this.tracks)for(let t of this.tracks)t.height=e,t.config.height=e}menuItemList(){let e=[];return void 0!==this.flipAxis&&e.push({label:"Flip y-axis",click:()=>{this.flipAxis=!this.flipAxis,this.trackView.repaintViews()}}),e=e.concat(Ui.numericDataMenuItems(this.trackView)),e}async getFeatures(e,t,i,n){const r=this.tracks.map((r=>r.getFeatures(e,t,i,n))),s=await Promise.all(r);return new Of(s)}draw(e){const t=e.features;for(let i=0,n=this.tracks.length;i<n;i++){const n=Object.assign({},e);n.features=t.featureArrays[i],this.tracks[i].dataRange=this.dataRange,this.tracks[i].flipAxis=this.flipAxis,this.tracks[i].logScale=this.logScale,this.graphType&&(this.tracks[i].graphType=this.graphType),this.tracks[i].draw(n)}}popupData(e){if(e.viewport&&e.viewport.cachedFeatures){const t=e.viewport.cachedFeatures.featureArrays;if(t&&t.length===this.tracks.length){const i=[];for(let n=0;n<this.tracks.length;n++){n>0&&i.push("<hr/>"),i.push(`<div style=background-color:rgb(245,245,245);border-bottom-style:dashed;border-bottom-width:1px;padding-bottom:5px;padding-top:10px;font-weight:bold;font-size:larger >${this.tracks[n].name}</div>`);const r=this.tracks[n].popupData(e,t[n]);i.push(...r)}return i}}}clickedFeatures(e){const t=e.viewport.cachedFeatures;if(!t)return[];const i=e.genomicLocation,n=[];for(let r of t.featureArrays){const t=e.referenceFrame.bpPerPixel>.2?3*e.referenceFrame.bpPerPixel:.2,s=fa(r,i-t,i+t);for(let e of s)n.push(e)}return n}get supportsWholeGenome(){return this.tracks.every((e=>e.supportsWholeGenome))}}class Of{constructor(e){this.featureArrays=e}getMax(e,t){let i=-Number.MAX_VALUE;for(let n of this.featureArrays)for(let r of n)if(void 0!==r.value&&!Number.isNaN(r.value)){if(r.end<e)continue;if(r.start>t)break;i=Math.max(i,r.value)}return i}}class Df extends Th{static defaults={height:250,theta:Math.PI/4,arcOrientation:!0,showBlocks:!0,blockHeight:3,thickness:1,alpha:.02,logScale:!0};constructor(e,t){super(e,t)}init(e){super.init(e),this.sinTheta=Math.sin(this.theta),this.cosTheta=Math.cos(this.theta),this.arcType=function(e){if(!e.arcType)return"nested";switch(e.arcType){case"chiapet":return"inView";case"chiapetoutbound":return"partialInView";default:return e.arcType}}(e),this.alpha=e.alpha||.02,this.painter={flipAxis:!this.arcOrientation,dataRange:this.dataRange,paintAxis:lu},e.valueColumn?(this.valueColumn=e.valueColumn,this.hasValue=!0):e.useScore&&(this.hasValue=!0,this.valueColumn="score"),e.max?(this.dataRange={min:e.min||0,max:e.max},this.autoscale=!1):this.autoscale=!0,e.featureSource?(this.featureSource=e.featureSource,delete e._featureSource):(this.featureSource=ld(e,this.browser.genome),this.featureSource.getWGFeatures=Vf)}async postInit(){if("function"!=typeof this.featureSource.getHeader||(this.header=await this.featureSource.getHeader(),!this.disposed))return this.header&&this.setTrackProperties(this.header),void 0===this.visibilityWindow&&"function"==typeof this.featureSource.defaultVisibilityWindow&&(this.visibilityWindow=await this.featureSource.defaultVisibilityWindow(),this.featureSource.visibilityWindow=this.visibilityWindow),this}get supportsWholeGenome(){return!0}async getFeatures(e,t,i){const n=this.visibilityWindow,r=await this.featureSource.getFeatures({chr:e,start:t,end:i,visibilityWindow:n});return void 0===this.hasValue&&r&&r.length>0&&(this.hasValue=void 0!==r[0].score),r}draw(e){"proportional"===this.arcType||"inView"===this.arcType||"partialInView"===this.arcType?this.drawProportional(e):this.drawNested(e)}drawNested(e){const t=e.context,i=e.pixelWidth,n=e.pixelHeight,r=e.viewportWidth,s=e.bpPerPixel,o=e.bpStart,a=s;ya.fillRect(t,0,e.pixelTop,i,n,{fillStyle:"rgb(255, 255, 255)"});const l=e.features;if(l){(function(){let e=0;for(let t of l){let n=(t.start-o)/a,r=(t.end-o)/a;n>=0&&r<=i&&(e=Math.max(e,r-n))}let t=Math.min(r,e)/2;if(e>0){let e=(n-10)/t;this.theta=function(e){let t,i=[.01570925532366355,.15838444032453644,.3249196962329063,.5095254494944288,.7265425280053609,.9999999999999999],n=[.031415926535897934,.3141592653589793,.6283185307179586,.9424777960769379,1.2566370614359172,1.5707963267948966];for(t=0;t<i.length&&!(i[t]>e);t++);let r=0===t?0:i[t-1],s=t<i.length?i[t]:1,o=(e-r)/(s-r),a=0===t?0:n[t-1],l=t<n.length?n[t]:Math.PI/2;return Math.min(Math.PI/2,a+o*(l-a))}(e),this.sinTheta=Math.sin(this.theta),this.cosTheta=Math.cos(this.theta)}}).call(this);const s=this.arcOrientation?e.pixelHeight:0,c=this.arcOrientation;t.font="8px sans-serif",t.textAlign="center";for(let e of l){let n;if(e.drawState=void 0,"function"==typeof this.color?n=this.color(e):(n=this.color||e.color||"rgb(180,25,137)",n&&this.config.useScore&&(n=Uf(n,(h=e.score,Math.min(1,.11+h/779*.89).toString())))),t.lineWidth=e.thickness||this.thickness||1,e.chr1===e.chr2||"all"===e.chr){const{m1:l,m2:h}=Pf(e,this.browser.genome);let d=Math.round((l-o)/a),u=Math.round((h-o)/a);if(u<0||d>i)continue;let f=u-d;f<3&&(f=3,d--);const p=f/2,g=p/this.sinTheta,m=this.cosTheta*g,b=d+p;let w,v,y;if(c?(w=this.height+m,v=Math.PI+Math.PI/2-this.theta,y=Math.PI+Math.PI/2+this.theta):(w=-m,v=Math.PI/2-this.theta,y=Math.PI/2+this.theta),this.showBlocks&&"all"!==e.chr){const i=(e.start1-o)/a,n=(e.end1-o)/a,r=(e.start2-o)/a,l=(e.end2-o)/a,h=this.arcOrientation?-this.blockHeight:this.blockHeight;t.fillRect(i,s,n-i,h),t.fillRect(r,s,l-r,h)}n&&!this.config.useScore&&f>r&&(n=Uf(n,this.alpha)),t.strokeStyle=n,t.fillStyle=n,t.beginPath(),t.arc(b,w,g,v,y,!1),t.stroke(),e.drawState={xc:b,yc:w,r:g}}else{let r=Math.round((e.start-o)/a),s=Math.round((e.end-o)/a);if(s<0||r>i)continue;let l=s-r;l<3&&(l=3,r--);const h=e.chr===e.chr1?e.chr2:e.chr1;t.strokeStyle=n,t.fillStyle=Uf(ff(h),.5),c?(t.fillRect(r,this.height/2,l,this.height/2),t.fillText(h,r+l/2,this.height/2-5),e.drawState={x:r,y:this.height/2,w:l,h:this.height/2}):(t.fillRect(r,0,l,this.height/2),t.fillText(h,r+l/2,this.height/2+13),e.drawState={x:r,y:0,w:l,h:this.height/2})}}}var h}getScaleFactor(e,t,i,n){return n?i/(Math.log10(t+1)-(e<=0?0:Math.log10(e+1))):i/(t-e)}drawProportional(e){const t=e.context,i=e.pixelWidth,n=e.pixelHeight,r=e.bpPerPixel,s=e.bpStart,o=r,a=e.referenceFrame.start,l=e.referenceFrame.end;ya.fillRect(t,0,e.pixelTop,i,n,{fillStyle:"rgb(255, 255, 255)"});const h=e.features;if(h&&h.length>0){const n=0,r=this.getScaleFactor(n,this.dataRange.max,e.pixelHeight-1,this.logScale),c=this.arcOrientation?e.pixelHeight:0;for(let e of h){e.drawState=void 0;const n=this.valueColumn?e[this.valueColumn]:e.score;if(void 0===n||Number.isNaN(n))continue;const h=Math.round((this.logScale?Math.log10(n+1):n)*r);if(e.chr1===e.chr2||"all"===e.chr){const{m1:i,m2:r}=Pf(e,this.browser.genome);let d=Math.round((i-s)/o),u=Math.round((r-s)/o)-d;if(u<3&&(u=3,d--),n<this.dataRange.min||n>this.dataRange.max)continue;if("proportional"!==this.arcType){const e="partialInView"===this.arcType,t=i>=a&&r<=l;let n=!1,s=!1;if(!t&&e&&(n=a<=i&&i<=l,n||(s=a<=r&&r<=l)),!(t||n||s))continue}const f=u/2,p=d+u/2;e.drawState={xc:p,yc:c,radiusX:f,radiusY:h};const g=!!this.arcOrientation,m=e.color||this.color;if(t.strokeStyle=m,t.lineWidth=e.thickness||this.thickness||1,!0===t.isSVG?t.strokeEllipse(p,c,f,h,0,0,Math.PI,g):(t.beginPath(),t.ellipse(p,c,f,h,0,0,Math.PI,g),t.stroke()),this.alpha&&(t.fillStyle=Uf(m,this.alpha),!0===t.isSVG?t.fillEllipse(p,c,f,h,0,0,Math.PI,g):t.fill()),this.showBlocks&&"all"!==e.chr){t.fillStyle=m;const i=(e.start1-s)/o,n=(e.end1-s)/o,r=(e.start2-s)/o,a=(e.end2-s)/o,l=this.arcOrientation?-this.blockHeight:this.blockHeight;t.fillRect(i,c,n-i,l),t.fillRect(r,c,a-r,l)}}else{let r=Math.round((e.start-s)/o),a=Math.round((e.end-s)/o);if(a<0||r>i||n<this.dataRange.min||n>this.dataRange.max)continue;const l=Math.min(h,this.height-13);let c=a-r;c<3&&(c=3,r--);const d=e.chr===e.chr1?e.chr2:e.chr1;if(t.font="8px sans-serif",t.textAlign="center",t.fillStyle=Uf(ff(d),.5),this.arcOrientation){const i=this.height-l;t.fillRect(r,i,c,l),t.fillText(d,r+c/2,i-5),e.drawState={x:r,y:i,w:c,h:l}}else t.fillRect(r,0,c,l),t.fillText(d,r+c/2,l+13),e.drawState={x:r,y:0,w:c,h:l}}}}}clearAxis(e,t,i){ya.fillRect(e,0,0,t,i,{fillStyle:"rgb(255, 255, 255)"})}paintAxis(e,t,i){const n={min:0,max:this.dataRange.max};"proportional"===this.arcType||"inView"===this.arcType||"partialInView"===this.arcType?(this.painter.flipAxis=!this.arcOrientation,this.painter.dataRange=n,this.painter.paintAxis(e,t,i)):this.clearAxis(e,t,i)}menuItemList(){let e=[];if(this.hasValue){e.push("<hr/>");const t={nested:"Nested",proportional:"Proportional - All",inView:"Proportional - Both Ends in View",partialInView:"Proportional - One End in View"};e.push("<b>Arc Type</b>");for(let i of["nested","proportional","inView","partialInView"])e.push({object:ft(Hi(t[i],i===this.arcType)),click:()=>{this.arcType=i,this.trackView.repaintViews()}})}return e.push("<hr/>"),e.push({name:"Toggle arc direction",click:()=>{this.arcOrientation=!this.arcOrientation,this.trackView.repaintViews()}}),e.push({name:this.showBlocks?"Hide Blocks":"Show Blocks",click:()=>{this.showBlocks=!this.showBlocks,this.trackView.repaintViews()}}),"proportional"!==this.arcType&&"inView"!==this.arcType&&"partialInView"!==this.arcType||(e=e.concat(Ui.numericDataMenuItems(this.trackView))),this.browser.circularView&&(e.push("<hr/>"),e.push({label:"Add interactions to circular view",click:()=>{for(let e of this.trackView.viewports)this.addChordsForViewport(e.referenceFrame)}})),e}contextMenuItemList(e){if(this.browser.circularView){const t=e.viewport,i=[];return i.push({label:"Add interactions to circular view",click:()=>{const e=t.referenceFrame;this.addChordsForViewport(e)}}),i.push("<hr/>"),i}}addChordsForViewport(e){const t=("all"===e.chr?this.featureSource.getAllFeatures():this.featureSource.featureCache.queryFeatures(e.chr,e.start,e.end)).filter((e=>e.drawState));if(0===t.length)return;zu(t.map((e=>{const t=e._f||e;return{uniqueId:`${t.chr1}:${t.start1}-${t.end1}_${t.chr2}:${t.start2}-${t.end2}`,refName:Du(t.chr1),start:t.start1,end:t.end1,mate:{refName:Du(t.chr2),start:t.start2,end:t.end2}}})),this,e,.5)}doAutoscale(e){let t=0;if(e)for(let i of e){const e=this.valueColumn?i[this.valueColumn]:i.score;Number.isNaN(e)||(t=Math.max(t,e))}return{min:0,max:t}}popupData(e,t){void 0===t&&(t=this.clickedFeatures(e));const i=[];for(let e of t){const t=e._||e;if(i.push({name:"Region 1",value:zf(t.chr1,t.start1,t.end1,t.strand1)}),i.push({name:"Region 2",value:zf(t.chr2,t.start2,t.end2,t.strand2)}),t.name&&i.push({name:"Name",value:t.name}),void 0!==t.value&&i.push({name:"Value",value:t.value}),void 0!==t.score&&i.push({name:"Score",value:t.score}),t.extras&&this.header&&this.header.columnNames){const e=this.header.columnNames,n=this.header.hiccups?6:10;for(let r=n;r<e.length;r++)this.header.colorColumn!==r&&("info"===e[r]?qf(i,t.extras[r-n]):i.push({name:e[r],value:t.extras[r-n]}))}break}return i}clickedFeatures(e){const t=e.viewport.cachedFeatures,i=[];if(t){const n="proportional"===this.arcType||"inView"===this.arcType||"partialInView"===this.arcType;for(let r of t)if(r.drawState)if(r.chr1===r.chr2||"all"===r.chr)if(n){const{xc:t,yc:n,radiusX:s,radiusY:o}=r.drawState,a=e.canvasX-t,l=e.canvasY-n,h=a/s*(a/s)+l/o*(l/o);h<=1&&i.push({score:1/h,feature:r})}else{const{xc:t,yc:n,r:s}=r.drawState,o=e.canvasX-t,a=e.canvasY-n,l=Math.abs(Math.sqrt(o*o+a*a)-s);l<5&&i.push({score:l,feature:r})}else{const{x:t,y:n,w:s,h:o}=r.drawState,a=5;if(e.canvasX>=t-a&&e.canvasX<=t+s+a&&e.canvasY>=n&&e.canvasY<=n+o){const n=-Math.abs(e.canvasX-(t+s/2));i.push({score:n,feature:r});break}}}return i.length>1&&i.sort(((e,t)=>e.score-t.score)),i.map((e=>e.feature))}}function Pf(e,t){let i=(e.start1+e.end1)/2,n=(e.start2+e.end2)/2;if("all"===e.chr&&(i=t.getGenomeCoordinate(e.chr1,i),n=t.getGenomeCoordinate(e.chr2,n)),i>n){const e=i;i=n,n=e}return{m1:i,m2:n}}function zf(e,t,i,n){return n&&"."!==n?`${e}:${Wi(t+1)}-${Wi(i)} (${n})`:`${e}:${Wi(t+1)}-${Wi(i)}`}const Hf=new Map;function Uf(e,t){const i=`${e}_${t}`;let n=Hf.get(i);return n||(n=Do.addAlpha(e,t),Hf.set(i,n)),n}function Vf(e){const t=e=>{const t=Object.assign({},e);return t.chr="all",t.start=i.getGenomeCoordinate(e.chr1,e.start1),t.end=i.getGenomeCoordinate(e.chr2,e.end2),t},i=this.genome;let n,r=0;for(let t of i.wgChromosomeNames){let i=e[t];if(i)for(let e of i)e.dup||(r++,e.score&&(!n||e.score>n.score)&&(n=e))}const s=this.maxWGCount,o=n&&n.score>0&&r>s?5:1,a=Math.floor(s/o),l=n&&n.score>0?Math.log(n.score)/o:Number.MAX_SAFE_INTEGER;let h,c=[],d=[];for(let e=0;e<o;e++)d.push([0]),c.push([]);for(let n of i.wgChromosomeNames){let i=e[n];if(i)for(let e of i)if(!e.dup){const i=e.score?Math.max(0,Math.min(o-1,Math.floor(Math.log(e.score)/l))):0;if(c[i].length<a)c[i].push(t(e));else{const n=a/(d[i]+1);if(Math.random()<n){const n=Math.floor(Math.random()*(a-1));c[i][n]=t(e)}}d[i]++}}if(1===o)h=c[0];else{h=[];for(let e of c)for(let t of e)h.push(t);n&&h.push(t(n)),h.sort((function(e,t){return e.start-t.start})),console.log(h.length)}return h}function qf(e,t){const i=t.split(";");for(let t of i){const i=t.split("=");2===i.length&&e.push({name:i[0],value:i[1]})}}const jf=$i,$f=new Map([["REF","referenceBases"],["ALT","alternateBases"],["QUAL","quality"],["FILTER","filter"]]);class Wf extends Th{static defaults={displayMode:"EXPANDED",sortDirection:"ASC",showGenotypes:!0,squishedVariantHeight:2,squishedCallHeight:1,expandedCallHeight:10,expandedVGap:2,squishedVGap:1,expandedGroupGap:10,squishedGroupGap:5,featureHeight:14,noGenotypeColor:"rgb(200,180,180)",noCallColor:"rgb(225, 225, 225)",nonRefColor:"rgb(200, 200, 215)",mixedColor:"rgb(200, 220, 200)",homrefColor:"rgb(200, 200, 200)",homvarColor:"rgb(17,248,254)",hetvarColor:"rgb(34,12,253)",colorBy:void 0,visibilityWindow:void 0,labelDisplayMode:void 0,type:"variant"};constructor(e,t){super(e,t)}init(e){super.init(e),this.expandedVariantHeight=e.expandedVariantHeight||e.variantHeight||10,this.featureSource=ld(e,this.browser.genome),this._initColorBy=e.colorBy,e.colorTable&&(this.colorTables=new Map,this.colorTables.set(e.colorBy,new ba(e.colorTable))),this._color=e.color,this._strokecolor=e.strokecolor,this._context_hook=e.context_hook,this.variantRowCount(1)}async postInit(){if(this.header=await this.getHeader(),!this.disposed){if(void 0===this.visibilityWindow&&!1!==this.config.indexed){const e=Yi(this.config.url)?this.config.url.name:this.config.url;jf(e)&&e.toLowerCase().includes("gnomad")?this.visibilityWindow=1e3:"function"==typeof this.featureSource.defaultVisibilityWindow?this.visibilityWindow=await this.featureSource.defaultVisibilityWindow():this.visibilityWindow=1e6}return this}}get supportsWholeGenome(){return!1===this.config.indexed||!0===this.config.supportsWholeGenome}get color(){return this._color||"rgb(0,0,150)"}set color(e){this._color=e,this.colorBy=void 0}async getHeader(){if(!this.header){if("function"==typeof this.featureSource.getHeader){const e=await this.featureSource.getHeader();e&&(this.callSets=e.callSets||[]),this.header=e}this.sampleNames=this.callSets?this.callSets.map((e=>e.name)):[]}return this.header}getCallsetsLength(){return this.callSets?this.callSets.length:0}async getFeatures(e,t,i,n){return void 0===this.header&&(this.header=await this.getHeader()),this.featureSource.getFeatures({chr:e,start:t,end:i,bpPerPixel:n,visibilityWindow:this.visibilityWindow})}hasSamples(){return this.getCallsetsLength()>0}getSamples(){return{yOffset:this.sampleYOffset,names:this.sampleNames,height:this.sampleHeight}}computePixelHeight(e){if(!e||0==e.length)return 10;const t="COLLAPSED"===this.displayMode?1:this.nVariantRows,i="SQUISHED"===this.displayMode?this.squishedVGap:this.expandedVGap,n="SQUISHED"===this.displayMode?this.squishedVariantHeight:this.expandedVariantHeight,r="SQUISHED"===this.displayMode?this.squishedCallHeight:this.expandedCallHeight;return 10+t*(n+i)+i+((!1===this.showGenotypes?0:this.getCallsetsLength()*t)+1)*(r+i)}variantRowCount(e){this.nVariantRows=e}draw({context:e,pixelWidth:t,pixelHeight:i,bpPerPixel:n,bpStart:r,pixelTop:s,features:o}){ya.fillRect(e,0,s,t,i,{fillStyle:"rgb(255, 255, 255)"});const a="SQUISHED"===this.displayMode?this.squishedVGap:this.expandedVGap,l="COLLAPSED"===this.displayMode?1:this.nVariantRows,h="SQUISHED"===this.displayMode?this.squishedVariantHeight:this.expandedVariantHeight;this.variantBandHeight=10+l*(h+a);let c=this.callSets;!c&&this._f&&(c=this._f.callSets);const d=this.getCallsetsLength();if(c&&d>0&&!1!==this.showGenotypes&&ya.strokeLine(e,0,this.variantBandHeight,t,this.variantBandHeight,{strokeStyle:"rgb(224,224,224) "}),o){const i="SQUISHED"===this.displayMode?this.squishedCallHeight:this.expandedCallHeight,s="SQUISHED"===this.displayMode?this.squishedVGap:this.expandedVGap,a=r+t*n+1;for(let t of o){if(t.end<r)continue;if(t.start>a)break;const o="SQUISHED"===this.displayMode?this.squishedVariantHeight:this.expandedVariantHeight,l=10+("COLLAPSED"===this.displayMode?0:t.row*(o+s)),h=o;let u=Math.round((t.start-r)/n),f=Math.round((t.end-r)/n),p=Math.max(1,f-u);p<3?(p=3,u-=1):p>5&&(u+=1,p-=2),e.fillStyle=this.getColorForFeature(t),e.fillRect(u,l,p,h);let g=this.getVariantStrokecolor(t);if(g&&(e.strokeStyle=g,e.strokeRect(u,l,p,h)),this.callContextHook(t,e,u,l,p,h),t.pixelRect={x:u,y:l,w:p,h:h},d>0&&!1!==this.showGenotypes){const n="COLLAPSED"===this.displayMode?1:this.nVariantRows;this.sampleYOffset=this.variantBandHeight+s,this.sampleHeight=n*(i+s);let r=0;if(c&&t.calls)for(let n of c){const o=t.calls[n.id];if(o){const a="COLLAPSED"===this.displayMode?0:t.row,l=this.sampleYOffset+r*this.sampleHeight+a*(i+s);let h=!0,c=!0,d=!1;if(o.genotype)for(let e of o.genotype){if("."===e){d=!0;break}0!==e&&(c=!1),0===e&&(h=!1)}o.genotype?e.fillStyle=d?this.noCallColor:c?this.homrefColor:h?this.homvarColor:this.hetvarColor:e.fillStyle=this.noGenotypeColor,e.fillRect(u,l,p,i),n.pixelRect={x:u,y:l,w:p,h:i}}r++}}}}else console.log("No feature list")}getColorForFeature(e){const t=e._f||e;let i;if(this.colorBy){const e=this.colorBy;let n;if(t.info.hasOwnProperty(e))n=t.info[e];else if($f.has(e)){n=t[$f.get(e)]}i=this.getVariantColorTable(e).getColor(n),i||(i="gray")}else i=this._color?"function"==typeof this._color?this._color(e):this._color:"NONVARIANT"===t.type?this.nonRefColor:"MIXED"===t.type?this.mixedColor:this.color;return i}getVariantStrokecolor(e){const t=e._f||e;let i;return i=this._strokecolor?"function"==typeof this._strokecolor?this._strokecolor(t):this._strokecolor:void 0,i}callContextHook(e,t,i,n,r,s){if(this._context_hook&&"function"==typeof this._context_hook){const o=e._f||e;t.save(),this._context_hook(o,t,i,n,r,s),t.restore()}}clickedFeatures(e){let t=super.clickedFeatures(e);const i="EXPANDED"===this.displayMode?this.expandedVGap:this.squishedVGap,n=i+("SQUISHED"===this.displayMode?this.squishedCallHeight:this.expandedCallHeight),r=e.y;if(r<=this.variantBandHeight){const e="SQUISHED"===this.displayMode?this.squishedVariantHeight:this.expandedVariantHeight,n=Math.floor((r-10)/(e+i));"COLLAPSED"!==this.displayMode&&(t=t.filter((e=>e.row===n)))}else if(this.callSets){const e=this.callSets,i=r-this.variantBandHeight,s=Math.floor(i/this.sampleHeight);if(s>=0&&s<e.length){const r=Math.floor((i-s*this.sampleHeight)/n),o="COLLAPSED"===this.displayMode?t:t.filter((e=>e.row===r)),a=e[s];t=o.map((e=>{const t=e.calls[a.id];return function(e,t){if(e.genotype){let i="";if("."===t.alternateBases)i="No Call";else{const n=t.alternateBases.split(",");for(let r of e.genotype)if(i.length>0&&(i+="|"),"."===r)i+=".";else if(0===r)i+=t.referenceBases;else{i+=n[r-1].replace("<","&lt;")}}e.genotypeName=i}}(t,e),t}))}}return t}popupData(e,t){void 0===t&&(t=this.clickedFeatures(e));const i=e.genomicLocation,n=this.browser.genome.id,r=this.browser.sampleInformation;let s=[];for(let e of t){const t=e._f||e;if(s.length>0&&s.push({html:'<hr style="border-top-width:2px ;border-color: #c9c3ba" />'}),"function"==typeof t.popupData){const e=t.popupData(i,n);Array.prototype.push.apply(s,e)}else{const e=t;if(void 0!==e.callSetName&&s.push({name:"Name",value:e.callSetName}),e.genotypeName&&s.push({name:"Genotype",value:e.genotypeName}),void 0!==e.phaseset&&s.push({name:"Phase set",value:e.phaseset}),void 0!==e.genotypeLikelihood&&s.push({name:"genotypeLikelihood",value:e.genotypeLikelihood.toString()}),r){var o=r.getAttributes(e.callSetName);o&&Object.keys(o).forEach((function(e){var t=e.replace(/([A-Z])/g," $1");t=t.charAt(0).toUpperCase()+t.slice(1),s.push({name:t,value:o[e]})}))}var a=Object.keys(e.info);a.length&&s.push("<hr/>"),a.forEach((function(t){s.push({name:t,value:decodeURIComponent(e.info[t])})}))}}return s}menuItemList(){const e=[];if(this.header.INFO&&this.header.INFO){const t=this.header.INFO.SVTYPE?["SVTYPE"]:[];if(this._initColorBy&&"SVTYPE"!==this._initColorBy&&t.push(this._initColorBy),t.length>0){e.push("<hr/>");const i=ft('<div class="igv-track-menu-category igv-track-menu-border-top">');i.text("Color by:"),e.push({name:void 0,object:i,click:void 0,init:void 0}),t.sort();for(let i of t){const t=this.colorBy===i,n=i||"None";e.push(this.colorByCB({key:i,label:n},t))}e.push(this.colorByCB({key:void 0,label:"None"},void 0===this.colorBy)),e.push("<hr/>")}}this.getCallsetsLength()>0&&(e.push({object:ft('<div class="igv-track-menu-border-top">')}),e.push({object:ft(Hi("Show Genotypes",this.showGenotypes)),click:()=>{this.showGenotypes=!this.showGenotypes,this.trackView.checkContentHeight(),this.trackView.repaintViews()}})),e.push({object:ft('<div class="igv-track-menu-border-top">')});for(let t of["COLLAPSED","SQUISHED","EXPANDED"]){e.push({object:ft(Hi({COLLAPSED:"Collapse",SQUISHED:"Squish",EXPANDED:"Expand"}[t],t===this.displayMode)),click:()=>{this.displayMode=t,this.trackView.checkContentHeight(),this.trackView.repaintViews()}})}return this.browser.circularView&&(e.push("<hr>"),e.push({label:"Add SVs to circular view",click:()=>{for(let e of this.trackView.viewports)this.sendChordsForViewport(e)}})),e}contextMenuItemList(e){if(this.browser.circularView){const t=e.viewport,i=[];return i.push({label:"Add SVs to Circular View",click:()=>{this.sendChordsForViewport(t)}}),i.push("<hr/>"),i}}sendChordsForViewport(e){const t=e.referenceFrame;let i;if("all"===t.chr){const e=this.featureSource.getAllFeatures(),t=Object.keys(e).map((t=>e[t]));i=[].concat(...t)}else i=this.featureSource.featureCache.queryFeatures(t.chr,t.start,t.end);zu(i.filter((e=>{const t=e._f||e;return t.info&&t.info.CHR2&&t.info.END&&(t.info.CHR2!==t.chr||Math.abs(Number.parseInt(t.info.END)-t.pos)>1e6)})).map((e=>{const t=e._f||e,i=Number.parseInt(t.info.END),n=i-100,r=i+100;return{uniqueId:`${t.chr}:${t.start}-${t.end}_${t.info.CHR2}:${t.info.END}`,refName:Du(t.chr),start:t.start,end:t.end,mate:{refName:Du(t.info.CHR2),start:n,end:r}}})),this,t,.5)}colorByCB(e,t){return{name:void 0,object:ft(Hi(e.label,t)),click:()=>{e.key===this.colorBy?(this.colorBy=void 0,delete this.config.colorBy,this.trackView.repaintViews()):(this.colorBy=e.key,this.config.colorBy=e.key,this.trackView.repaintViews())},init:void 0}}getState(){const e=super.getState();return this._color&&"function"!=typeof this._color&&(e.color=this._color),e}getVariantColorTable(e){if(this.colorTables||(this.colorTables=new Map),!this.colorTables.has(e)){let t;if("SVTYPE"===e)t=Gf;else t=new ma("Set1");this.colorTables.set(e,t)}return this.colorTables.get(e)}}const Gf=new ba({DEL:"#ff2101",INS:"#001888",DUP:"#028401",INV:"#008688",CNV:"#8931ff",BND:"#891100","*":"#002eff"});class Zf extends Th{constructor(e,t){super(e,t)}init(e){super.init(e),this.name=e.name,this.pValueField=e.pValueField||"pValue",this.geneField=e.geneField||"geneSymbol",this.snpField=e.snpField||"snp";const t=e.minLogP||e.min,i=e.maxLogP||e.max;this.dataRange={min:t||3.5,max:i||25},this.autoscale=!i||e.autoscale,this.autoscalePercentile=void 0===e.autoscalePercentile?98:e.autoscalePercentile,this.background=e.background,this.divider=e.divider||"rgb(225,225,225)",this.dotSize=e.dotSize||2,this.height=e.height||100,this.autoHeight=!1,this.disableButtons=e.disableButtons,this.visibilityWindow=void 0===e.visibilityWindow?2e6:e.visibilityWindow>=0?Math.min(2e6,e.visibilityWindow):2e6,this.featureSource=ld(e,this.browser.genome),Vu.gtexLoaded=!0}paintAxis(e,t,i){const n=(this.dataRange.max-this.dataRange.min)/i,r={font:"normal 10px Arial",textAlign:"right",strokeStyle:"black"};ya.fillRect(e,0,0,t,i,{fillStyle:"rgb(255, 255, 255)"});const s=Math.ceil(10*(this.dataRange.max-this.dataRange.min)/i);for(let o=4;o<=this.dataRange.max;o+=s){const s=.85*t,a=s-5,l=s,h=i-(o-this.dataRange.min)/n;ya.strokeLine(e,a,h,l,h,r),h>8&&ya.fillText(e,o,a-1,h+2,r)}r.textAlign="center",ya.fillText(e,"-log10(pvalue)",t/4,i/2,r,{rotate:{angle:-90}})}async getFeatures(e,t,i){const n=this.pValueField,r=this.visibilityWindow,s=await this.featureSource.getFeatures({chr:e,start:t,end:i,visibilityWindow:r});return s.forEach((function(e){e.value=e[n]})),s}draw(e){const t=e.context,i=e.pixelWidth,n=e.pixelHeight;this.background&&ya.fillRect(t,0,0,i,n,{fillStyle:this.background}),ya.strokeLine(t,0,n-1,i,n-1,{strokeStyle:this.divider});const r=r=>{const s=r?2*this.dotSize:this.dotSize,o=e.bpStart,a=(this.dataRange.max-this.dataRange.min)/n,l=e.referenceFrame.selection;for(let c of e.features){const d=(c.start-o+.5)/e.bpPerPixel;if(d<0)continue;if(d>i)break;const u=c.snp.toUpperCase(),f=c[this.geneField].toUpperCase(),p=l&&(l.snp===u||l.gene===f);if(!r||p){l&&l.snp===u&&l.addGene(f);var h=-Math.log(c[this.pValueField])/Math.LN10;if(h>=this.dataRange.min){let e;h>this.dataRange.max?(h=this.dataRange.max,e=!0):e=!1;const i=Math.max(0+s,n-Math.round((h-this.dataRange.min)/a));let o;c.px=d,c.py=i,c.radius=s,r&&l?(o=l.colorForGene(f),ya.setProperties(t,{fillStyle:o,strokeStyle:"black"})):(o=e?"rgb(150, 150, 150)":"rgb(180, 180, 180)",ya.setProperties(t,{fillStyle:o,strokeStyle:o})),ya.fillCircle(t,d,i,s),ya.strokeCircle(t,d,i,s)}}}};r(!1),r(!0)}popupData(e,t){if(void 0===t&&(t=e.viewport.cachedFeatures),!t||0===t.length)return[];const i=this.name,n=[];for(let r of t)Math.abs(r.px-e.canvasX)<r.radius+3&&Math.abs(r.py-e.canvasY)<r.radius+3&&(n.length>0&&n.push("<hr/>"),n.push({name:"snp id",value:r.snp},{name:"gene id",value:r.geneId},{name:"gene name",value:r.geneName},{name:"p value",value:r.pValue},{name:"tissue",value:i}));return n}menuItemList(){return Ui.numericDataMenuItems(this.trackView)}doAutoscale(e){if(e.length>0){var t=e.map((function(e){return-Math.log(e.value)/Math.LN10}));this.dataRange.max=Io(t,this.autoscalePercentile)}else{const e=this.config.maxLogP||this.config.max;this.dataRange.max=e||25}return this.dataRange}}const Qf={X:"rgb(204, 153, 0)",Y:"rgb(153, 204, 0)",Un:"darkGray)",1:"rgb(80, 80, 255)",2:"rgb(206, 61, 50)","2a":"rgb(210, 65, 55)","2b":"rgb(215, 70, 60)",3:"rgb(116, 155, 88)",4:"rgb(240, 230, 133)",5:"rgb(70, 105, 131)",6:"rgb(186, 99, 56)",7:"rgb(93, 177, 221)",8:"rgb(128, 34, 104)",9:"rgb(107, 215, 107)",10:"rgb(213, 149, 167)",11:"rgb(146, 72, 34)",12:"rgb(131, 123, 141)",13:"rgb(199, 81, 39)",14:"rgb(213, 143, 92)",15:"rgb(122, 101, 165)",16:"rgb(228, 175, 105)",17:"rgb(59, 27, 83)",18:"rgb(205, 222, 183)",19:"rgb(97, 42, 121)",20:"rgb(174, 31, 99)",21:"rgb(231, 199, 111)",22:"rgb(90, 101, 94)",23:"rgb(204, 153, 0)",24:"rgb(153, 204, 0)",25:"rgb(51, 204, 0)",26:"rgb(0, 204, 51)",27:"rgb(0, 204, 153)",28:"rgb(0, 153, 204)",29:"rgb(10, 71, 255)",30:"rgb(71, 117, 255)",31:"rgb(255, 194, 10)",32:"rgb(255, 209, 71)",33:"rgb(153, 0, 51)",34:"rgb(153, 26, 0)",35:"rgb(153, 102, 0)",36:"rgb(128, 153, 0)",37:"rgb(51, 153, 0)",38:"rgb(0, 153, 26)",39:"rgb(0, 153, 102)",40:"rgb(0, 128, 153)",41:"rgb(0, 51, 153)",42:"rgb(26, 0, 153)",43:"rgb(102, 0, 153)",44:"rgb(153, 0, 128)",45:"rgb(214, 0, 71)",46:"rgb(255, 20, 99)",47:"rgb(0, 214, 143)",48:"rgb(20, 255, 177)"};for(let Qw of Object.keys(Qf)){Qf["chr"+Qw]=Qf[Qw]}for(let Xw=1;Xw<=48;Xw++){if(10===Xw)continue;const Yw=Xf(Xw);Qf[Yw]=Qf[Xw.toString()]}function Xf(e){if(!+e)return!1;for(var t=String(+e).split(""),i=["","C","CC","CCC","CD","D","DC","DCC","DCCC","CM","","X","XX","XXX","XL","L","LX","LXX","LXXX","XC","","I","II","III","IV","V","VI","VII","VIII","IX"],n="",r=3;r--;)n=(i[+t.pop()+10*r]||"")+n;return Array(+t.join("")+1).join("M")+n}class Yf extends Th{constructor(e,t){super(e,t)}init(e){super.init(e),this.useChrColors=void 0===e.useChrColors||e.useChrColors,this.trait=e.trait,this.posteriorProbability=e.posteriorProbability,this.valueProperty="bed"===e.format?"score":"value",this.height=e.height||100,this.autoscale=e.autoscale,this.autoscalePercentile=void 0===e.autoscalePercentile?98:e.autoscalePercentile,this.background=e.background,this.divider=e.divider||"rgb(225,225,225)",this.dotSize=e.dotSize||3,this.popoverWindow=void 0===e.popoverWindow?1e8:e.popoverWindow,this.useChrColors?this.colorScale=new ba(e.colorTable||Qf):e.color?this.colorScale=new If(e.color):this.colorScale=new Rf(e.colorScale||{thresholds:[5e-8,5e-4,.5],colors:["rgb(255,50,50)","rgb(251,100,100)","rgb(251,170,170)","rgb(227,238,249)"]}),this.featureSource=ld(e,this.browser.genome)}async postInit(){if("function"!=typeof this.featureSource.getHeader||(this.header=await this.featureSource.getHeader(),!this.disposed))return this.header&&this.setTrackProperties(this.header),this.autoscale||(this.posteriorProbability?this.dataRange={min:void 0===this.config.min?0:this.config.min,max:void 0===this.config.max?1:this.config.max}:this.dataRange={min:void 0===this.config.min?0:this.config.min,max:void 0===this.config.max?25:this.config.max}),this}get supportsWholeGenome(){return!0}async getFeatures(e,t,i){const n=this.visibilityWindow;return this.featureSource.getFeatures({chr:e,start:t,end:i,visibilityWindow:n})}draw(e){const t=e.features,i=e.context,n=e.pixelWidth,r=e.pixelHeight;if(this.background&&ya.fillRect(i,0,0,n,r,{fillStyle:this.background}),ya.strokeLine(i,0,r-1,n,r-1,{strokeStyle:this.divider}),t){const s=e.bpPerPixel,o=e.bpStart,a=o+n*s+1;for(let e of t){const t=e.start;if(t<o)continue;if(t>a)break;let n;if(this.posteriorProbability)n=e[this.valueProperty];else{const t=e[this.valueProperty];if(!t)continue;n=-Math.log10(t)}const l=this.useChrColors?e._f?e._f.chr:e.chr:n,h=this.colorScale.getColor(l),c=(this.dataRange.max-this.dataRange.min)/r,d=Math.round((t-o)/s),u=Math.max(this.dotSize,r-Math.round((n-this.dataRange.min)/c));h&&ya.setProperties(i,{fillStyle:h,strokeStyle:"black"}),ya.fillCircle(i,d,u,this.dotSize),e.px=d,e.py=u}}}paintAxis(e,t,i){ya.fillRect(e,0,0,t,i,{fillStyle:"rgb(255, 255, 255)"});var n={font:"normal 10px Arial",textAlign:"right",strokeStyle:"black"};const r=(this.dataRange.max-this.dataRange.min)/i;if(this.posteriorProbability){const t=.1;for(let s=this.dataRange.min;s<this.dataRange.max;s+=t){const t=i-Math.round((s-this.dataRange.min)/r);ya.strokeLine(e,45,t-2,50,t-2,n),ya.fillText(e,s.toFixed(1),44,t+2,n)}}else{const t=Math.ceil(10*(this.dataRange.max-this.dataRange.min)/i);for(let s=this.dataRange.min;s<this.dataRange.max;s+=t){const t=i-Math.round((s-this.dataRange.min)/r);ya.strokeLine(e,45,t,50,t,n),ya.fillText(e,Math.floor(s),44,t+4,n)}}n.textAlign="center",this.posteriorProbability?ya.fillText(e,"PPA",t/2,i/2,n,{rotate:{angle:-90}}):ya.fillText(e,"-log10(pvalue)",t/2,i/2,n,{rotate:{angle:-90}})}popupData(e,t){void 0===t&&(t=e.viewport.cachedFeatures);let i=[];const n=e.viewport.trackView.track;if(t){let r=0;for(let s of t){const t=Math.abs(e.canvasX-s.px),o=Math.abs(e.canvasY-s.py),a=s[this.valueProperty];if(t<this.dotSize&&o<this.dotSize){if(r>0&&i.push("<HR/>"),5==r){i.push("...");break}if("function"==typeof s.popupData)i=i.concat(s.popupData());else{const e=s.realChr||s.chr,t=(s.realStart||s.start)+1;i.push({name:"chromosome",value:e}),i.push({name:"position",value:t}),i.push({name:"name",value:s.name}),n.posteriorProbability?i.push({name:"posterior probability",value:a}):i.push({name:"pValue",value:a})}r++}}}return i}menuItemList(){return Ui.numericDataMenuItems(this.trackView)}doAutoscale(e){if(e.length>0){const t=this.valueProperty,i=this.posteriorProbability,n=e.map((function(e){const n=e[t];return{value:i?n:-Math.log(n)/Math.LN10}}));this.dataRange=Aa(n)}else this.posteriorProbability?this.dataRange={min:this.config.min||0,max:this.config.max||1}:this.dataRange={min:this.config.max||25,max:this.config.min||0};return this.dataRange}}class Kf extends Th{constructor(e,t){super(e,t)}init(e){super.init(e),this.autoscale=e.autoscale||void 0===e.max,this.dataRange={min:e.min||0,max:e.max},this.windowFunction=e.windowFunction||"mean",this.paintAxis=lu,this.graphType=e.graphType||"bar",e._featureSource?(this.featureSource=e._featureSource,delete e._featureSource):this.featureSource=ld(this.config,this.browser.genome),this.visibilityWindow=-1,this.featureSource.visibilityWindow=this.visibilityWindow}async postInit(){if("function"==typeof this.featureSource.getHeader){if(this.header=await this.featureSource.getHeader(),this.disposed)return;if(this.sampleNames=this.header.columnNames.slice(3),this.setTrackProperties(this.header),this.header.hasOwnProperty("clickToHighlight")){let e=this.header.clickToHighlight;this.config.clickToHighlight=e,this.config.samplesClickedToHighlight={}}if(this.header.hasOwnProperty("highlight")){this.config.highlightSamples={};let e=this.header.highlight;Array.isArray(e)||(e=[e]);for(let t of e){const e=t.split(";");2===e.length&&(this.config.highlightSamples[e[0]]=e[1])}}}}menuItemList(){return Ui.numericDataMenuItems(this.trackView)}async getFeatures(e,t,i){const n=await this.featureSource.getFeatures({chr:e,start:0,end:Number.MAX_SAFE_INTEGER,visibilityWindow:this.visibilityWindow});let r,s;for(let e=1;e<n.length-1;e++)if(void 0===r&&n[e].end>t&&(r=e-1),void 0===s&&n[e].start>i){s=e+1;break}return void 0===r&&(r=0),void 0===s&&(s=n.length),n.slice(r,s)}draw(e){const{features:t,context:i,bpPerPixel:n,bpStart:r,pixelWidth:s,pixelHeight:o}=e,a=e=>(this.dataRange.max-e)/(this.dataRange.max-this.dataRange.min)*o,l=function(e){let t=Math.floor((e-r)/n);return isNaN(t)&&console.warn("isNaN(x). feature start "+Wi(e)+" bp start "+Wi(r)),t};if(t&&t.length>0&&(void 0===this.dataRange.min&&(this.dataRange.min=0),this.dataRange.max>this.dataRange.min)){const e=this.config.highlightSamples,n=this.config.onlyHandleClicksForHighlightedSamples,r=this.config.clickToHighlight;let s=-1,o={},h=[],c=[];this.clickDetectorCache={};for(let d of t){const t=l(d.start),u=l(d.end),f=s>=0?l(s):t;if(!isNaN(t)&&!isNaN(u)){this.clickDetectorCache[t]=[],this.clickDetectorCache[u]=[];for(let s=0;s<d.values.length;s++){const l=this.sampleNames[s],p=d.values[s],g=a(p);if(t-f>=1){const s=o[l],c=a(s),d=e&&e[l];d?h.push([f,c,t,g,d]):r&&l in this.config.samplesClickedToHighlight?h.push([f,c,t,g,this.config.samplesClickedToHighlight[l]]):ya.strokeLine(i,f,c,t,g,{strokeStyle:"#D9D9D9"}),n&&!(l in e)||this.clickDetectorCache[t].push([f,c,t,g,l,d||"gray"])}if(u-t>=1){const s=e&&e[l];s?c.push([t,g,u,g,s]):r&&l in this.config.samplesClickedToHighlight?c.push([t,g,u,g,this.config.samplesClickedToHighlight[l]]):ya.strokeLine(i,t,g,u,g,{strokeStyle:"gray"}),n&&!(l in e)||this.clickDetectorCache[u].push([t,g,u,g,l,s||"gray"])}o[l]=p}s=d.end}}for(let e of h)ya.strokeLine(i,e[0],e[1],e[2],e[3],{strokeStyle:e[4],lineWidth:1.3});for(let e of c)ya.strokeLine(i,e[0],e[1],e[2],e[3],{strokeStyle:e[4],lineWidth:2})}(e=>{if(this.config.hasOwnProperty("guideLines"))for(let t of this.config.guideLines)if(t.hasOwnProperty("color")&&t.hasOwnProperty("y")&&t.hasOwnProperty("dotted")){let i=a(t.y),n={strokeStyle:t.color,strokeWidth:2};t.dotted?ya.dashedLine(e.context,0,i,e.pixelWidth,i,5,n):ya.strokeLine(e.context,0,i,e.pixelWidth,i,n)}})(e)}doAutoscale(e){let t,i;return e.length>0?(t=Number.MAX_VALUE,i=-Number.MAX_VALUE,e.forEach((function(e){t=Math.min(t,...e.values),i=Math.max(i,...e.values)})),t-=.01,i+=.01):(t=0,i=100),{min:t,max:i}}clickedFeatures(e){const t=e.canvasX,i=e.canvasY;let n=null;for(n of Object.keys(this.clickDetectorCache))if(n=parseInt(n),n>=t)break;if(n){let e=Number.MAX_VALUE,o=[];const a=this.clickDetectorCache[n];for(let n of a){const r=n[0],s=n[2];if(t<r||t>s)return[];const a=n[1],l=n[3];if(i<Math.min(a,l)-10||i>Math.max(a,l)+10)continue;const h=Jf(t,i,r,a,s,l);h<e&&(o=[{name:n[4],color:n[5]}],e=h)}if(e<5){if(this.config.clickToHighlight){if(o[0].name in this.config.samplesClickedToHighlight)delete this.config.samplesClickedToHighlight[o[0].name];else if("any"===this.config.clickToHighlight){var r=["red","darkblue","green","teal","olivedrab","orange","maroon","purple","blue","gold"],s=r[Math.floor(Math.random()*(r.length+1))];this.config.samplesClickedToHighlight[o[0].name]=s}else this.config.samplesClickedToHighlight[o[0].name]=this.config.clickToHighlight;this.trackView.repaintViews()}return o}}return[]}popupData(e,t){void 0===t&&(t=this.clickedFeatures(e));const i=[];return t.forEach((function(e){for(let t of Object.keys(e))Ca(e[t])&&i.push({name:t,value:e[t]})})),i}get supportsWholeGenome(){return!1}}function Jf(e,t,i,n,r,s){const o=r-i,a=s-n,l=Math.abs(o*(n-t)-(i-e)*a),h=Math.sqrt(o*o+a*a);return h>0?l/h:0}class ep extends Th{constructor(e,t){super(e,t),e.height||(this.height=300),this.arcOrientation=!1,this.theta=Math.PI/2,"bp"===e.format?this.featureSource=new ip(e,t.genome):this.featureSource=new Bc(e,t.genome)}async getFeatures(e,t,i){const n=this.visibilityWindow;return this.featureSource.getFeatures({chr:e,start:t,end:i,visibilityWindow:n})}draw(e){const t=e.context,i=Math.PI/2,n=e.pixelWidth,r=e.pixelHeight;e.viewportWidth;const s=e.bpPerPixel,o=e.bpStart,a=s,l=this.arcOrientation;ya.fillRect(t,0,e.pixelTop,n,r,{fillStyle:"rgb(255, 255, 255)"});const h=e.features;if(h){tp(h,1);for(let e of h)if(e.startLeft){let n=Math.round((e.startLeft-o)/a),r=Math.round((e.startRight-o)/a),s=Math.round((e.endLeft-o)/a),h=Math.round((e.endRight-o)/a);t.fillStyle=e.color,t.strokeStyle=e.color,t.beginPath();let c=(n+h)/2,d=(h-n)/2,u=this.height,f=Math.PI+(Math.PI/2-i),p=2*Math.PI-(Math.PI/2-i);l?(u=0,t.arc(c,u,d,p,f),t.lineTo(h,u)):(t.arc(c,u,d,f,p),t.lineTo(s,u));const g=(r+s)/2,m=(s-r)/2,b=u;l?(t.arc(g,b,m,f,p,!0),t.lineTo(s,b)):(t.arc(g,b,m,p,f,!0),t.lineTo(n,b)),t.stroke(),t.fill(),e.drawState={x1:c,y1:u,r1:d,x2:g,y2:b,r2:m,sa:f,ea:p}}else{let n=Math.round((e.start-o)/a),r=Math.round((e.end-o)/a);t.strokeStyle=e.color,t.beginPath();let s=(n+r)/2,h=(r-n)/2,c=this.height,d=Math.PI+(Math.PI/2-i),u=2*Math.PI-(Math.PI/2-i);l?(c=0,t.arc(s,c,h,u,d)):t.arc(s,c,h,d,u),t.stroke(),e.drawState={x1:s,y1:c,r1:h,sa:d,ea:u}}}}clickedFeatures(e){const t=super.clickedFeatures(e),i=[];tp(t,-1);for(let n of t){const t=n.drawState,r=e.canvasX-t.x1,s=e.canvasY-t.y1,o=Math.sqrt(r*r+s*s),a=t.r1+3;let l,h;if(void 0===t.x2)l=o,h=t.r1-3;else{const i=e.canvasX-t.x2,n=e.canvasY-t.y2;l=Math.sqrt(i*i+n*n),h=t.r2-3}if(o<a&&l>h){i.push(n);break}}return i}popupData(e,t){if(void 0===t&&(t=this.clickedFeatures(e)),t&&t.length>0)return this.extractPopupData(t[0],this.getGenomeId())}menuItemList(){var e=this;return[{name:"Toggle arc direction",click:function(){e.arcOrientation=!e.arcOrientation,e.trackView.repaintViews()}}]}}function tp(e,t){e.sort((function(e,i){const n=void 0===e.score?-Number.MAX_VALUE:e.score,r=void 0===i.score?-Number.MAX_VALUE:i.score;return(void 0===t?1:t)*(n-r)}))}class ip{constructor(e,t){this.config=e,this.genome=t}async getFeatures({chr:e,start:t,end:i,bpPerPixel:n,visibilityWindow:r}){const s=this.genome;if(this.featureCache)return this.featureCache.queryFeatures(e,t,i);{const n=Sa(this.config),r=await ta.loadString(this.config.url,n);return this.featureCache=new ca(function(e){if(!e)return null;const t=oc(e);let i,n=!0;const r=[],s=[],o=[];for(;void 0!==(i=t.nextLine());){const e=i.split("\t");if(n&&i.startsWith("color:")){const t="rgb("+e[1]+","+e[2]+","+e[3]+")";r.push(t),e.length>4&&s.push(e[4])}else{n=!1;const t=e[0],i=Number.parseInt(e[1])-1,l=Number.parseInt(e[2])-1,h=Number.parseInt(e[3]),c=Number.parseInt(e[4]);var a=Number.parseInt(e[5]);const d=r[a];let u;u=i<=c?{chr:t,startLeft:Math.min(i,l),startRight:Math.max(i,l),endLeft:Math.min(h,c),endRight:Math.max(h,c),color:d,score:a}:{chr:t,startLeft:Math.min(h,c),startRight:Math.max(h,c),endLeft:Math.min(i,l),endRight:Math.max(i,l),color:d,score:a},u.start=u.startLeft,u.end=u.endRight,s.length>a&&(u.description=s[a]),o.push(u)}}return o}(r),s),this.featureCache.queryFeatures(e,t,i)}}}class np{constructor(e){this.browser=e,this.type="ideogram",this.height=16,this.order=Number.MIN_SAFE_INTEGER,this.disableButtons=!0,this.ignoreTrackMenu=!0}async getFeatures(e,t,i){return[]}computePixelHeight(e){return this.height}draw({context:e,referenceFrame:t,pixelWidth:i,pixelHeight:n}){const r=t.chr,s=t.genome.getChromosome(r);if(void 0===s||i<=0||n<=0||"all"===r.toLowerCase())return;!function({ctx:e,chr:t,referenceFrame:i,genome:n,width:r,height:s,stainColors:o}){const a=1,l=.5*a,h=0;if(void 0===n)return;ya.fillRect(e,0,0,r,s,{fillStyle:Do.greyScale(255)});const c=n.getCytobands(t);if(c){const t=h+s/2,i=[],n=[];if(0===c.length)return;const d=r/c[c.length-1].end;e.beginPath(),ya.roundRect(e,l,l+h,r-2*l,s-2*l,(s-2*l)/2,0,1),e.clip();for(let r=0;r<c.length;r++){const l=c[r],u=d*l.start,f=d*l.end;"c"===l.type?("p"===l.name.charAt(0)?(i[0]=u,n[0]=s+h,i[1]=u,n[1]=h,i[2]=f,n[2]=t):(i[0]=f,n[0]=s+h,i[1]=f,n[1]=h,i[2]=u,n[2]=t),e.fillStyle="rgb(150, 0, 0)",e.strokeStyle="rgb(150, 0, 0)",ya.polygon(e,i,n,1,0)):(e.fillStyle=rp(o,l),ya.fillRect(e,u,a+h,f-u,s-2*a))}}e.strokeStyle=Do.greyScale(41),ya.roundRect(e,l,l+h,r-2*l,s-2*l,(s-2*l)/2,0,1)}({ctx:e,chr:r,referenceFrame:t,genome:t.genome,width:i,height:n,stainColors:[]});const o=Math.round(t.bpPerPixel*i),a=t.start;let l=s.bpLength;const h=t.genome.getCytobands(r);if(h&&h.length>0&&h[h.length-1].end&&(l=Math.max(l,h[h.length-1].end),s.bpLength=l),o<l){const t=o/l,r=a/l;let s=Math.floor(r*i),h=Math.floor(t*i);s=Math.max(0,s),s=Math.min(i-h,s),e.save(),e.strokeStyle="red",e.lineWidth=h<2?1:2;const c=s+e.lineWidth/2;h=h<2?1:h-e.lineWidth;const d=e.lineWidth/2,u=n-e.lineWidth;e.strokeRect(c,d,h,u),e.restore()}}dispose(){this.trackView=void 0}}function rp(e,t){if("c"===t.type)return"rgb(150, 10, 10)";var i=t.stain,n=230;"p"===t.type&&(n=Math.floor(230-i/100*230));var r=e[n];return r||(r="rgb("+n+","+n+","+n+")",e[n]=r),r}let sp=new ma("Dark2");["GT/AG","CT/AC","GC/AG","CT/GC","AT/AC","GT/AT","non-canonical"].forEach((e=>{sp.getColor(e)}));const op={};class ap extends Th{constructor(e,t){super(e,t)}init(e){super.init(e),this.type=e.type||"junctions",e._featureSource?(this.featureSource=e._featureSource,delete e._featureSource):this.featureSource=e.featureSource?e.featureSource:ld(e,this.browser.genome),this.margin=void 0===e.margin?10:e.margin,this.height||(this.height=100),void 0===e.colorByNumReadsThreshold&&(e.colorByNumReadsThreshold=5)}async postInit(){if("function"!=typeof this.featureSource.getHeader||(this.header=await this.featureSource.getHeader(),!this.disposed))return this.header&&this.setTrackProperties(this.header),void 0===this.visibilityWindow&&"function"==typeof this.featureSource.defaultVisibilityWindow&&(this.visibilityWindow=await this.featureSource.defaultVisibilityWindow()),this}get supportsWholeGenome(){return!1}async getFeatures(e,t,i,n){const r=this.visibilityWindow;return this.featureSource.getFeatures({chr:e,start:t,end:i,bpPerPixel:n,visibilityWindow:r})}computePixelHeight(e){return this.height}draw(e){const t=e.features,i=e.context,n=e.bpPerPixel,r=e.bpStart,s=e.pixelWidth,o=e.pixelHeight,a=r+s*n+1;if(this.config.isMergedTrack||ya.fillRect(i,0,e.pixelTop,s,o,{fillStyle:"rgb(255, 255, 255)"}),t){op.referenceFrame=e.viewport.referenceFrame,op.referenceFrameStart=op.referenceFrame.start,op.referenceFrameEnd=op.referenceFrameStart+op.referenceFrame.toBP(e.viewport.getWidth()),op.featureZoomOutTracker={};for(let e of t)if(!(e.end<r)){if(e.start>a)break;this.renderJunction(e,r,n,o,i)}}else console.log("No feature list")}renderJunction(e,t,i,n,r){e.isVisible=!1;const s=Math.round((e.start-t)/i),o=Math.round((e.end-t)/i),a=(s+o)/2;if(o-s<=3){if(a in op.featureZoomOutTracker)return;op.featureZoomOutTracker[a]=!0}if(this.config.hideAnnotatedJunctions&&"true"===e.attributes.annotated_junction)return;if(this.config.hideUnannotatedJunctions&&"false"===e.attributes.annotated_junction)return;if(this.config.hideMotifs&&this.config.hideMotifs.includes(e.attributes.motif))return;if(this.config.hideStrand===e.strand)return;if(this.config.minJunctionEndsVisible){let t=0;if(e.start>=op.referenceFrameStart&&e.start<=op.referenceFrameEnd&&(t+=1),e.end>=op.referenceFrameStart&&e.end<=op.referenceFrameEnd&&(t+=1),t<this.config.minJunctionEndsVisible)return}let l,h,c,d;if(e.attributes.uniquely_mapped){if(l=parseInt(e.attributes.uniquely_mapped),l<this.config.minUniquelyMappedReads)return;if(h=parseInt(e.attributes.multi_mapped),c=l+h,c<this.config.minTotalReads)return;if(c>0&&h/c>this.config.maxFractionMultiMappedReads)return;if(e.attributes.maximum_spliced_alignment_overhang&&parseInt(e.attributes.maximum_spliced_alignment_overhang)<this.config.minSplicedAlignmentOverhang)return}if(e.attributes.num_samples_with_this_junction){if(d=parseInt(e.attributes.num_samples_with_this_junction),this.config.minSamplesWithThisJunction&&d<this.config.minSamplesWithThisJunction)return;if(this.config.maxSamplesWithThisJunction&&d>this.config.maxSamplesWithThisJunction)return;if(e.attributes.num_samples_total&&(e.attributes.percent_samples_with_this_junction=100*d/Number(e.attributes.num_samples_total),this.config.minPercentSamplesWithThisJunction&&(e.attributes.percent_samples_with_this_junction<this.config.minPercentSamplesWithThisJunction||e.attributes.percent_samples_with_this_junction>this.config.maxPercentSamplesWithThisJunction)))return}const u=this.margin,f=this.height,p=u+.5*f;let g=u;const m=u+f-10,b=(s+a)/2,w=(a+o)/2;let v,y,_=1;e.attributes.line_width?_=Number(e.attributes.line_width):(void 0===this.config.thicknessBasedOn||"numUniqueReads"===this.config.thicknessBasedOn?_=l:"numReads"===this.config.thicknessBasedOn?_=c:"numSamplesWithThisJunction"===this.config.thicknessBasedOn&&void 0!==d&&(_=d),_=1+Math.log(_+1)/Math.log(12)),void 0===this.config.bounceHeightBasedOn||"random"===this.config.bounceHeightBasedOn?v=(e.start+e.end)%7:"distance"===this.config.bounceHeightBasedOn?v=6*(e.end-e.start)/(op.referenceFrameEnd-op.referenceFrameStart):"thickness"===this.config.bounceHeightBasedOn&&(v=2*_),g+=f*Math.max(7-v,0)/10,y=e.attributes.color?e.attributes.color:void 0===this.config.colorBy||"numUniqueReads"===this.config.colorBy?l>this.config.colorByNumReadsThreshold?"blue":"#AAAAAA":"numReads"===this.config.colorBy?c>this.config.colorByNumReadsThreshold?"blue":"#AAAAAA":"isAnnotatedJunction"===this.config.colorBy?"true"===e.attributes.annotated_junction?"#b0b0ec":"orange":"strand"===this.config.colorBy?"+"===e.strand?"#b0b0ec":"#ecb0b0":"motif"===this.config.colorBy?sp.getColor(e.attributes.motif):"#AAAAAA";let x="";e.attributes.label?x=e.attributes.label.replace(/_/g," "):void 0===this.config.labelWith||"uniqueReadCount"===this.config.labelWith?x=l:"totalReadCount"===this.config.labelWith?x=c:"numSamplesWithThisJunction"===this.config.labelWith?void 0!==d&&(x=d):"percentSamplesWithThisJunction"===this.config.labelWith?void 0!==e.attributes.percent_samples_with_this_junction&&(x=e.attributes.percent_samples_with_this_junction.toFixed(0)+"%"):"motif"===this.config.labelWith&&void 0!==e.attributes.motif&&(x+=e.attributes.motif),"uniqueReadCount"===this.config.labelWithInParen?x+=" ("+l+")":"totalReadCount"===this.config.labelWithInParen?x+=" ("+c+")":"multiMappedReadCount"===this.config.labelWithInParen?h>0&&(x+=" (+"+h+")"):"numSamplesWithThisJunction"===this.config.labelWithInParen?void 0!==d&&(x+=" ("+d+")"):"percentSamplesWithThisJunction"===this.config.labelWithInParen?void 0!==e.attributes.percent_samples_with_this_junction&&(x+=" ("+e.attributes.percent_samples_with_this_junction.toFixed(0)+"%)"):"motif"===this.config.labelWithInParen&&void 0!==e.attributes.motif&&(x+=` ${e.attributes.motif}`),e.isVisible=!0,r.beginPath(),r.moveTo(s,m),r.bezierCurveTo(b,g,w,g,o,m),r.lineWidth=_,r.strokeStyle=y,r.stroke();const k=(e,t,i,n)=>{e.beginPath(),e.moveTo(t,i),e.lineTo(t-n/2,i-n),e.lineTo(t+n/2,i-n),e.lineTo(t,i),e.closePath(),e.fill()};if(e.attributes.left_shape||e.attributes.right_shape){r.fillStyle=y;const t=r.lineWidth>2?10:7;e.attributes.left_shape&&k(r,s,m,t),e.attributes.right_shape&&k(r,o,m,t)}r.fillText(x,a-r.measureText(x).width/2,(7*g+p)/8)}clickedFeatures(e){return super.clickedFeatures(e).filter((function(e){return e.isVisible&&e.attributes}))}popupData(e,t){void 0===t&&(t=this.clickedFeatures(e));const i=e.genomicLocation,n=[];for(let e of t){const t="function"==typeof e.popupData?e.popupData(i):this.extractPopupData(e._f||e,this.getGenomeId());t&&(n.length>0&&n.push("<hr/><hr/>"),Array.prototype.push.apply(n,t))}return n}dispose(){this.trackView=void 0}}class lp{constructor(e){var t;this.config=e,this.url=(t=e.path||e.url).includes("//www.dropbox.com")?t.replace("//www.dropbox.com","//dl.dropboxusercontent.com"):t.startsWith("ftp://ftp.ncbi.nlm.nih.gov")?t.replace("ftp://","https://"):t}async read(e,t){const i=this.config.headers||{};if(void 0!==e&&t){const n="bytes="+e+"-"+(e+t-1);i.Range=n}let n=this.url.slice();if(this.config.oauthToken){const e=async function(e){return"function"==typeof e?await Promise.resolve(e()):e}(this.config.oauthToken);i.Authorization=`Bearer ${e}`}this.config.apiKey&&(n=function(e,t,i){const n=e.includes("?")?"&":"?";return e+n+t+"="+i}(n,"key",this.config.apiKey));const r=await fetch(n,{method:"GET",headers:i,redirect:"follow",mode:"cors"}),s=r.status;if(s>=400){const e=Error(r.statusText);throw e.code=s,e}return r.arrayBuffer()}}class hp{constructor(e){this.file=e.file,this.fetchSize=e.fetchSize||16e3,this.maxSize=e.maxSize||1e6,this.buffers=[]}async read(e,t){let i=this.buffers.filter((i=>i.overlaps(e,e+t)));for(let n of i)if(n.contains(e,e+t))return n.slice(e,e+t);if(0===i.length){let i=Math.max(t,this.fetchSize);this.buffers.sort(((e,t)=>e.start-t.start));const n=function(e,t,i){let n=i-1,r=e.length;for(;1+n<r;){const i=n+(r-n>>1);t(e[i])?r=i:n=i}return r}(this.buffers,(t=>t.start>e),0);n<this.buffers.length&&(i=Math.min(i,this.buffers[n].start-e));const r=e,s=await this.file.read(r,i),o=new cp(r,s);return this.addBuffer(o),o.slice(e,e+t)}{i.sort(((e,t)=>e.start-t.start));const n=[];let r=e;for(let e of i){if(r<e.start){const t=r,i=e.start-r,s=await this.file.read(t,i),o=new cp(t,s);n.push(o)}n.push(e),r=e.end}const s=e+t;if(s>r){const e=r,t=s-e,i=await this.file.read(e,t),o=new cp(e,i);n.push(o)}const o=n[0].start,a=function(e){const t=e.reduce(((e,t)=>e+t.byteLength),0),i=new Uint8Array(t);let n=0;for(let t of e)i.set(new Uint8Array(t),n),n+=t.byteLength;return i.buffer}(n.map((e=>e.buffer))),l=new cp(o,a),h=new Set(i);return this.buffers=this.buffers.filter((e=>!h.has(e))),this.addBuffer(l),l.slice(e,e+t)}}addBuffer(e){const t=this.buffers.reduce(((e,t)=>e+t.size),0)+e.size;if(t>this.maxSize){const e=t-this.maxSize;this.buffers.sort(((e,t)=>e.creationTime-t.creationTime));let i,n=0;for(i=0;i<this.buffers.length&&(n+=this.buffers[i].size,!(n>e));i++);this.buffers=i<this.buffers.length-1?this.buffers.slice(i):[]}e.size<=this.maxSize&&this.buffers.push(e)}}class cp{constructor(e,t){this.creationTime=Date.now(),this.start=e,this.buffer=t}slice(e,t){if(e<this.start||t-e>this.buffer.byteLength)throw Error("buffer bounds error");return this.buffer.slice(e-this.start,t-this.start)}get end(){return this.start+this.buffer.byteLength}get size(){return this.buffer.byteLength}contains(e,t){return e>=this.start&&t<=this.end}overlaps(e,t){return e>this.start&&e<this.end||t>this.start&&t<this.end}toString(){return`Buffer ${this.creationTime}   ${this.start} - ${this.end}`}}class dp{constructor(e){this.file=e}async read(e,t){if(0===t)return new ArrayBuffer;return(null!=e&&t?this.file.slice(e,e+t):this.file).arrayBuffer()}}async function up(e,t,i=0){var n=new Map;for(let[r,s]of e.entries()){let e=await vp.unpack_from_async("<"+s,t,i);i+=vp.calcsize(s),1==e.length&&(e=e[0]),n.set(r,e)}return n}function fp(e,t,i=0){var n=new Map;for(let[r,s]of e.entries()){let e=vp.unpack_from("<"+s,t,i);i+=vp.calcsize(s),1==e.length&&(e=e[0]),n.set(r,e)}return n}function 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t=e[n++];if(t<128){s[r++]=t;continue}let o=Wp[t];if(o>4)s[r++]=65533,n+=o-1;else{for(t&=2===o?31:3===o?15:7;o>1&&n<i;)t=t<<6|63&e[n++],o--;o>1?s[r++]=65533:t<65536?s[r++]=t:(t-=65536,s[r++]=55296|t>>10&1023,s[r++]=56320|1023&t)}}return((e,t)=>{if(t<65534&&e.subarray&&$p)return String.fromCharCode.apply(null,e.length===t?e:e.subarray(0,t));let i="";for(let n=0;n<t;n++)i+=String.fromCharCode(e[n]);return i})(s,r)},utf8border:(e,t)=>{(t=t||e.length)>e.length&&(t=e.length);let i=t-1;for(;i>=0&&128==(192&e[i]);)i--;return i<0||0===i?t:i+Wp[e[i]]>t?i:t}};var Zp=function(){this.input=null,this.next_in=0,this.avail_in=0,this.total_in=0,this.output=null,this.next_out=0,this.avail_out=0,this.total_out=0,this.msg="",this.state=null,this.data_type=2,this.adler=0},Qp=function(e,t){let i,n,r,s,o,a,l,h,c,d,u,f,p,g,m,b,w,v,y,_,x,k,C,S;const A=e.state;i=e.next_in,C=e.input,n=i+(e.avail_in-5),r=e.next_out,S=e.output,s=r-(t-e.avail_out),o=r+(e.avail_out-257),a=A.dmax,l=A.wsize,h=A.whave,c=A.wnext,d=A.window,u=A.hold,f=A.bits,p=A.lencode,g=A.distcode,m=(1<<A.lenbits)-1,b=(1<<A.distbits)-1;e:do{f<15&&(u+=C[i++]<<f,f+=8,u+=C[i++]<<f,f+=8),w=p[u&m];t:for(;;){if(v=w>>>24,u>>>=v,f-=v,v=w>>>16&255,0===v)S[r++]=65535&w;else{if(!(16&v)){if(0==(64&v)){w=p[(65535&w)+(u&(1<<v)-1)];continue t}if(32&v){A.mode=12;break e}e.msg="invalid literal/length code",A.mode=30;break e}y=65535&w,v&=15,v&&(f<v&&(u+=C[i++]<<f,f+=8),y+=u&(1<<v)-1,u>>>=v,f-=v),f<15&&(u+=C[i++]<<f,f+=8,u+=C[i++]<<f,f+=8),w=g[u&b];i:for(;;){if(v=w>>>24,u>>>=v,f-=v,v=w>>>16&255,!(16&v)){if(0==(64&v)){w=g[(65535&w)+(u&(1<<v)-1)];continue i}e.msg="invalid distance code",A.mode=30;break e}if(_=65535&w,v&=15,f<v&&(u+=C[i++]<<f,f+=8,f<v&&(u+=C[i++]<<f,f+=8)),_+=u&(1<<v)-1,_>a){e.msg="invalid distance too far back",A.mode=30;break e}if(u>>>=v,f-=v,v=r-s,_>v){if(v=_-v,v>h&&A.sane){e.msg="invalid distance too far back",A.mode=30;break e}if(x=0,k=d,0===c){if(x+=l-v,v<y){y-=v;do{S[r++]=d[x++]}while(--v);x=r-_,k=S}}else if(c<v){if(x+=l+c-v,v-=c,v<y){y-=v;do{S[r++]=d[x++]}while(--v);if(x=0,c<y){v=c,y-=v;do{S[r++]=d[x++]}while(--v);x=r-_,k=S}}}else if(x+=c-v,v<y){y-=v;do{S[r++]=d[x++]}while(--v);x=r-_,k=S}for(;y>2;)S[r++]=k[x++],S[r++]=k[x++],S[r++]=k[x++],y-=3;y&&(S[r++]=k[x++],y>1&&(S[r++]=k[x++]))}else{x=r-_;do{S[r++]=S[x++],S[r++]=S[x++],S[r++]=S[x++],y-=3}while(y>2);y&&(S[r++]=S[x++],y>1&&(S[r++]=S[x++]))}break}}break}}while(i<n&&r<o);y=f>>3,i-=y,f-=y<<3,u&=(1<<f)-1,e.next_in=i,e.next_out=r,e.avail_in=i<n?n-i+5:5-(i-n),e.avail_out=r<o?o-r+257:257-(r-o),A.hold=u,A.bits=f},Xp=15,Yp=new Uint16Array([3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0]),Kp=new Uint8Array([16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78]),Jp=new Uint16Array([1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0]),eg=new Uint8Array([16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64]),tg=(e,t,i,n,r,s,o,a)=>{const l=a.bits;let h,c,d,u,f,p,g=0,m=0,b=0,w=0,v=0,y=0,_=0,x=0,k=0,C=0,S=null,A=0;const E=new Uint16Array(16),T=new Uint16Array(16);let M,R,L,I=null,N=0;for(g=0;g<=Xp;g++)E[g]=0;for(m=0;m<n;m++)E[t[i+m]]++;for(v=l,w=Xp;w>=1&&0===E[w];w--);if(v>w&&(v=w),0===w)return r[s++]=20971520,r[s++]=20971520,a.bits=1,0;for(b=1;b<w&&0===E[b];b++);for(v<b&&(v=b),x=1,g=1;g<=Xp;g++)if(x<<=1,x-=E[g],x<0)return-1;if(x>0&&(0===e||1!==w))return-1;for(T[1]=0,g=1;g<Xp;g++)T[g+1]=T[g]+E[g];for(m=0;m<n;m++)0!==t[i+m]&&(o[T[t[i+m]]++]=m);if(0===e?(S=I=o,p=19):1===e?(S=Yp,A-=257,I=Kp,N-=257,p=256):(S=Jp,I=eg,p=-1),C=0,m=0,g=b,f=s,y=v,_=0,d=-1,k=1<<v,u=k-1,1===e&&k>852||2===e&&k>592)return 1;for(;;){M=g-_,o[m]<p?(R=0,L=o[m]):o[m]>p?(R=I[N+o[m]],L=S[A+o[m]]):(R=96,L=0),h=1<<g-_,c=1<<y,b=c;do{c-=h,r[f+(C>>_)+c]=M<<24|R<<16|L|0}while(0!==c);for(h=1<<g-1;C&h;)h>>=1;if(0!==h?(C&=h-1,C+=h):C=0,m++,0==--E[g]){if(g===w)break;g=t[i+o[m]]}if(g>v&&(C&u)!==d){for(0===_&&(_=v),f+=b,y=g-_,x=1<<y;y+_<w&&(x-=E[y+_],!(x<=0));)y++,x<<=1;if(k+=1<<y,1===e&&k>852||2===e&&k>592)return 1;d=C&u,r[d]=v<<24|y<<16|f-s|0}}return 0!==C&&(r[f+C]=g-_<<24|64<<16|0),a.bits=v,0},{Z_FINISH:ig,Z_BLOCK:ng,Z_TREES:rg,Z_OK:sg,Z_STREAM_END:og,Z_NEED_DICT:ag,Z_STREAM_ERROR:lg,Z_DATA_ERROR:hg,Z_MEM_ERROR:cg,Z_BUF_ERROR:dg,Z_DEFLATED:ug}=Vp,fg=12,pg=30,gg=e=>(e>>>24&255)+(e>>>8&65280)+((65280&e)<<8)+((255&e)<<24);function mg(){this.mode=0,this.last=!1,this.wrap=0,this.havedict=!1,this.flags=0,this.dmax=0,this.check=0,this.total=0,this.head=null,this.wbits=0,this.wsize=0,this.whave=0,this.wnext=0,this.window=null,this.hold=0,this.bits=0,this.length=0,this.offset=0,this.extra=0,this.lencode=null,this.distcode=null,this.lenbits=0,this.distbits=0,this.ncode=0,this.nlen=0,this.ndist=0,this.have=0,this.next=null,this.lens=new Uint16Array(320),this.work=new Uint16Array(288),this.lendyn=null,this.distdyn=null,this.sane=0,this.back=0,this.was=0}var bg,wg,vg=e=>{if(!e||!e.state)return lg;const t=e.state;return e.total_in=e.total_out=t.total=0,e.msg="",t.wrap&&(e.adler=1&t.wrap),t.mode=1,t.last=0,t.havedict=0,t.dmax=32768,t.head=null,t.hold=0,t.bits=0,t.lencode=t.lendyn=new Int32Array(852),t.distcode=t.distdyn=new Int32Array(592),t.sane=1,t.back=-1,sg},yg=e=>{if(!e||!e.state)return lg;const t=e.state;return t.wsize=0,t.whave=0,t.wnext=0,vg(e)},_g=(e,t)=>{let i;if(!e||!e.state)return lg;const n=e.state;return t<0?(i=0,t=-t):(i=1+(t>>4),t<48&&(t&=15)),t&&(t<8||t>15)?lg:(null!==n.window&&n.wbits!==t&&(n.window=null),n.wrap=i,n.wbits=t,yg(e))},xg=(e,t)=>{if(!e)return lg;const i=new mg;e.state=i,i.window=null;const n=_g(e,t);return n!==sg&&(e.state=null),n},kg=!0,Cg=e=>{if(kg){bg=new Int32Array(512),wg=new Int32Array(32);let t=0;for(;t<144;)e.lens[t++]=8;for(;t<256;)e.lens[t++]=9;for(;t<280;)e.lens[t++]=7;for(;t<288;)e.lens[t++]=8;for(tg(1,e.lens,0,288,bg,0,e.work,{bits:9}),t=0;t<32;)e.lens[t++]=5;tg(2,e.lens,0,32,wg,0,e.work,{bits:5}),kg=!1}e.lencode=bg,e.lenbits=9,e.distcode=wg,e.distbits=5},Sg=(e,t,i,n)=>{let r;const s=e.state;return null===s.window&&(s.wsize=1<<s.wbits,s.wnext=0,s.whave=0,s.window=new Uint8Array(s.wsize)),n>=s.wsize?(s.window.set(t.subarray(i-s.wsize,i),0),s.wnext=0,s.whave=s.wsize):(r=s.wsize-s.wnext,r>n&&(r=n),s.window.set(t.subarray(i-n,i-n+r),s.wnext),(n-=r)?(s.window.set(t.subarray(i-n,i),0),s.wnext=n,s.whave=s.wsize):(s.wnext+=r,s.wnext===s.wsize&&(s.wnext=0),s.whave<s.wsize&&(s.whave+=r))),0},Ag=(e,t)=>{let i,n,r,s,o,a,l,h,c,d,u,f,p,g,m,b,w,v,y,_,x,k,C=0;const S=new Uint8Array(4);let A,E;const T=new Uint8Array([16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]);if(!e||!e.state||!e.output||!e.input&&0!==e.avail_in)return lg;i=e.state,i.mode===fg&&(i.mode=13),o=e.next_out,r=e.output,l=e.avail_out,s=e.next_in,n=e.input,a=e.avail_in,h=i.hold,c=i.bits,d=a,u=l,k=sg;e:for(;;)switch(i.mode){case 1:if(0===i.wrap){i.mode=13;break}for(;c<16;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(2&i.wrap&&35615===h){i.check=0,S[0]=255&h,S[1]=h>>>8&255,i.check=Hp(i.check,S,2,0),h=0,c=0,i.mode=2;break}if(i.flags=0,i.head&&(i.head.done=!1),!(1&i.wrap)||(((255&h)<<8)+(h>>8))%31){e.msg="incorrect header check",i.mode=pg;break}if((15&h)!==ug){e.msg="unknown compression method",i.mode=pg;break}if(h>>>=4,c-=4,x=8+(15&h),0===i.wbits)i.wbits=x;else if(x>i.wbits){e.msg="invalid window size",i.mode=pg;break}i.dmax=1<<i.wbits,e.adler=i.check=1,i.mode=512&h?10:fg,h=0,c=0;break;case 2:for(;c<16;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(i.flags=h,(255&i.flags)!==ug){e.msg="unknown compression method",i.mode=pg;break}if(57344&i.flags){e.msg="unknown header flags set",i.mode=pg;break}i.head&&(i.head.text=h>>8&1),512&i.flags&&(S[0]=255&h,S[1]=h>>>8&255,i.check=Hp(i.check,S,2,0)),h=0,c=0,i.mode=3;case 3:for(;c<32;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}i.head&&(i.head.time=h),512&i.flags&&(S[0]=255&h,S[1]=h>>>8&255,S[2]=h>>>16&255,S[3]=h>>>24&255,i.check=Hp(i.check,S,4,0)),h=0,c=0,i.mode=4;case 4:for(;c<16;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}i.head&&(i.head.xflags=255&h,i.head.os=h>>8),512&i.flags&&(S[0]=255&h,S[1]=h>>>8&255,i.check=Hp(i.check,S,2,0)),h=0,c=0,i.mode=5;case 5:if(1024&i.flags){for(;c<16;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}i.length=h,i.head&&(i.head.extra_len=h),512&i.flags&&(S[0]=255&h,S[1]=h>>>8&255,i.check=Hp(i.check,S,2,0)),h=0,c=0}else i.head&&(i.head.extra=null);i.mode=6;case 6:if(1024&i.flags&&(f=i.length,f>a&&(f=a),f&&(i.head&&(x=i.head.extra_len-i.length,i.head.extra||(i.head.extra=new Uint8Array(i.head.extra_len)),i.head.extra.set(n.subarray(s,s+f),x)),512&i.flags&&(i.check=Hp(i.check,n,f,s)),a-=f,s+=f,i.length-=f),i.length))break e;i.length=0,i.mode=7;case 7:if(2048&i.flags){if(0===a)break e;f=0;do{x=n[s+f++],i.head&&x&&i.length<65536&&(i.head.name+=String.fromCharCode(x))}while(x&&f<a);if(512&i.flags&&(i.check=Hp(i.check,n,f,s)),a-=f,s+=f,x)break e}else i.head&&(i.head.name=null);i.length=0,i.mode=8;case 8:if(4096&i.flags){if(0===a)break e;f=0;do{x=n[s+f++],i.head&&x&&i.length<65536&&(i.head.comment+=String.fromCharCode(x))}while(x&&f<a);if(512&i.flags&&(i.check=Hp(i.check,n,f,s)),a-=f,s+=f,x)break e}else i.head&&(i.head.comment=null);i.mode=9;case 9:if(512&i.flags){for(;c<16;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(h!==(65535&i.check)){e.msg="header crc mismatch",i.mode=pg;break}h=0,c=0}i.head&&(i.head.hcrc=i.flags>>9&1,i.head.done=!0),e.adler=i.check=0,i.mode=fg;break;case 10:for(;c<32;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}e.adler=i.check=gg(h),h=0,c=0,i.mode=11;case 11:if(0===i.havedict)return e.next_out=o,e.avail_out=l,e.next_in=s,e.avail_in=a,i.hold=h,i.bits=c,ag;e.adler=i.check=1,i.mode=fg;case fg:if(t===ng||t===rg)break e;case 13:if(i.last){h>>>=7&c,c-=7&c,i.mode=27;break}for(;c<3;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}switch(i.last=1&h,h>>>=1,c-=1,3&h){case 0:i.mode=14;break;case 1:if(Cg(i),i.mode=20,t===rg){h>>>=2,c-=2;break e}break;case 2:i.mode=17;break;case 3:e.msg="invalid block type",i.mode=pg}h>>>=2,c-=2;break;case 14:for(h>>>=7&c,c-=7&c;c<32;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if((65535&h)!=(h>>>16^65535)){e.msg="invalid stored block lengths",i.mode=pg;break}if(i.length=65535&h,h=0,c=0,i.mode=15,t===rg)break e;case 15:i.mode=16;case 16:if(f=i.length,f){if(f>a&&(f=a),f>l&&(f=l),0===f)break e;r.set(n.subarray(s,s+f),o),a-=f,s+=f,l-=f,o+=f,i.length-=f;break}i.mode=fg;break;case 17:for(;c<14;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(i.nlen=257+(31&h),h>>>=5,c-=5,i.ndist=1+(31&h),h>>>=5,c-=5,i.ncode=4+(15&h),h>>>=4,c-=4,i.nlen>286||i.ndist>30){e.msg="too many length or distance symbols",i.mode=pg;break}i.have=0,i.mode=18;case 18:for(;i.have<i.ncode;){for(;c<3;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}i.lens[T[i.have++]]=7&h,h>>>=3,c-=3}for(;i.have<19;)i.lens[T[i.have++]]=0;if(i.lencode=i.lendyn,i.lenbits=7,A={bits:i.lenbits},k=tg(0,i.lens,0,19,i.lencode,0,i.work,A),i.lenbits=A.bits,k){e.msg="invalid code lengths set",i.mode=pg;break}i.have=0,i.mode=19;case 19:for(;i.have<i.nlen+i.ndist;){for(;C=i.lencode[h&(1<<i.lenbits)-1],m=C>>>24,b=C>>>16&255,w=65535&C,!(m<=c);){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(w<16)h>>>=m,c-=m,i.lens[i.have++]=w;else{if(16===w){for(E=m+2;c<E;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(h>>>=m,c-=m,0===i.have){e.msg="invalid bit length repeat",i.mode=pg;break}x=i.lens[i.have-1],f=3+(3&h),h>>>=2,c-=2}else if(17===w){for(E=m+3;c<E;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}h>>>=m,c-=m,x=0,f=3+(7&h),h>>>=3,c-=3}else{for(E=m+7;c<E;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}h>>>=m,c-=m,x=0,f=11+(127&h),h>>>=7,c-=7}if(i.have+f>i.nlen+i.ndist){e.msg="invalid bit length repeat",i.mode=pg;break}for(;f--;)i.lens[i.have++]=x}}if(i.mode===pg)break;if(0===i.lens[256]){e.msg="invalid code -- missing end-of-block",i.mode=pg;break}if(i.lenbits=9,A={bits:i.lenbits},k=tg(1,i.lens,0,i.nlen,i.lencode,0,i.work,A),i.lenbits=A.bits,k){e.msg="invalid literal/lengths set",i.mode=pg;break}if(i.distbits=6,i.distcode=i.distdyn,A={bits:i.distbits},k=tg(2,i.lens,i.nlen,i.ndist,i.distcode,0,i.work,A),i.distbits=A.bits,k){e.msg="invalid distances set",i.mode=pg;break}if(i.mode=20,t===rg)break e;case 20:i.mode=21;case 21:if(a>=6&&l>=258){e.next_out=o,e.avail_out=l,e.next_in=s,e.avail_in=a,i.hold=h,i.bits=c,Qp(e,u),o=e.next_out,r=e.output,l=e.avail_out,s=e.next_in,n=e.input,a=e.avail_in,h=i.hold,c=i.bits,i.mode===fg&&(i.back=-1);break}for(i.back=0;C=i.lencode[h&(1<<i.lenbits)-1],m=C>>>24,b=C>>>16&255,w=65535&C,!(m<=c);){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(b&&0==(240&b)){for(v=m,y=b,_=w;C=i.lencode[_+((h&(1<<v+y)-1)>>v)],m=C>>>24,b=C>>>16&255,w=65535&C,!(v+m<=c);){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}h>>>=v,c-=v,i.back+=v}if(h>>>=m,c-=m,i.back+=m,i.length=w,0===b){i.mode=26;break}if(32&b){i.back=-1,i.mode=fg;break}if(64&b){e.msg="invalid literal/length code",i.mode=pg;break}i.extra=15&b,i.mode=22;case 22:if(i.extra){for(E=i.extra;c<E;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}i.length+=h&(1<<i.extra)-1,h>>>=i.extra,c-=i.extra,i.back+=i.extra}i.was=i.length,i.mode=23;case 23:for(;C=i.distcode[h&(1<<i.distbits)-1],m=C>>>24,b=C>>>16&255,w=65535&C,!(m<=c);){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(0==(240&b)){for(v=m,y=b,_=w;C=i.distcode[_+((h&(1<<v+y)-1)>>v)],m=C>>>24,b=C>>>16&255,w=65535&C,!(v+m<=c);){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}h>>>=v,c-=v,i.back+=v}if(h>>>=m,c-=m,i.back+=m,64&b){e.msg="invalid distance code",i.mode=pg;break}i.offset=w,i.extra=15&b,i.mode=24;case 24:if(i.extra){for(E=i.extra;c<E;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}i.offset+=h&(1<<i.extra)-1,h>>>=i.extra,c-=i.extra,i.back+=i.extra}if(i.offset>i.dmax){e.msg="invalid distance too far back",i.mode=pg;break}i.mode=25;case 25:if(0===l)break e;if(f=u-l,i.offset>f){if(f=i.offset-f,f>i.whave&&i.sane){e.msg="invalid distance too far back",i.mode=pg;break}f>i.wnext?(f-=i.wnext,p=i.wsize-f):p=i.wnext-f,f>i.length&&(f=i.length),g=i.window}else g=r,p=o-i.offset,f=i.length;f>l&&(f=l),l-=f,i.length-=f;do{r[o++]=g[p++]}while(--f);0===i.length&&(i.mode=21);break;case 26:if(0===l)break e;r[o++]=i.length,l--,i.mode=21;break;case 27:if(i.wrap){for(;c<32;){if(0===a)break e;a--,h|=n[s++]<<c,c+=8}if(u-=l,e.total_out+=u,i.total+=u,u&&(e.adler=i.check=i.flags?Hp(i.check,r,u,o-u):Pp(i.check,r,u,o-u)),u=l,(i.flags?h:gg(h))!==i.check){e.msg="incorrect data check",i.mode=pg;break}h=0,c=0}i.mode=28;case 28:if(i.wrap&&i.flags){for(;c<32;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(h!==(4294967295&i.total)){e.msg="incorrect length check",i.mode=pg;break}h=0,c=0}i.mode=29;case 29:k=og;break e;case pg:k=hg;break e;case 31:return cg;default:return lg}return e.next_out=o,e.avail_out=l,e.next_in=s,e.avail_in=a,i.hold=h,i.bits=c,(i.wsize||u!==e.avail_out&&i.mode<pg&&(i.mode<27||t!==ig))&&Sg(e,e.output,e.next_out,u-e.avail_out),d-=e.avail_in,u-=e.avail_out,e.total_in+=d,e.total_out+=u,i.total+=u,i.wrap&&u&&(e.adler=i.check=i.flags?Hp(i.check,r,u,e.next_out-u):Pp(i.check,r,u,e.next_out-u)),e.data_type=i.bits+(i.last?64:0)+(i.mode===fg?128:0)+(20===i.mode||15===i.mode?256:0),(0===d&&0===u||t===ig)&&k===sg&&(k=dg),k},Eg={inflateReset:yg,inflateReset2:_g,inflateResetKeep:vg,inflateInit:e=>xg(e,15),inflateInit2:xg,inflate:Ag,inflateEnd:e=>{if(!e||!e.state)return lg;let t=e.state;return t.window&&(t.window=null),e.state=null,sg},inflateGetHeader:(e,t)=>{if(!e||!e.state)return lg;const i=e.state;return 0==(2&i.wrap)?lg:(i.head=t,t.done=!1,sg)},inflateSetDictionary:(e,t)=>{const i=t.length;let n,r,s;return e&&e.state?(n=e.state,0!==n.wrap&&11!==n.mode?lg:11===n.mode&&(r=1,r=Pp(r,t,i,0),r!==n.check)?hg:(s=Sg(e,t,i,i),s?(n.mode=31,cg):(n.havedict=1,sg))):lg},inflateInfo:"pako inflate (from Nodeca project)"};var Tg=function(){this.text=0,this.time=0,this.xflags=0,this.os=0,this.extra=null,this.extra_len=0,this.name="",this.comment="",this.hcrc=0,this.done=!1},Mg=Object.prototype.toString,{Z_NO_FLUSH:Rg,Z_FINISH:Lg,Z_OK:Ig,Z_STREAM_END:Ng,Z_NEED_DICT:Fg,Z_STREAM_ERROR:Bg,Z_DATA_ERROR:Og,Z_MEM_ERROR:Dg}=Vp;function Pg(e){this.options=jp.assign({chunkSize:65536,windowBits:15,to:""},e||{});const t=this.options;t.raw&&t.windowBits>=0&&t.windowBits<16&&(t.windowBits=-t.windowBits,0===t.windowBits&&(t.windowBits=-15)),!(t.windowBits>=0&&t.windowBits<16)||e&&e.windowBits||(t.windowBits+=32),t.windowBits>15&&t.windowBits<48&&0==(15&t.windowBits)&&(t.windowBits|=15),this.err=0,this.msg="",this.ended=!1,this.chunks=[],this.strm=new Zp,this.strm.avail_out=0;let i=Eg.inflateInit2(this.strm,t.windowBits);if(i!==Ig)throw new Error(Up[i]);if(this.header=new Tg,Eg.inflateGetHeader(this.strm,this.header),t.dictionary&&("string"==typeof t.dictionary?t.dictionary=Gp.string2buf(t.dictionary):"[object ArrayBuffer]"===Mg.call(t.dictionary)&&(t.dictionary=new Uint8Array(t.dictionary)),t.raw&&(i=Eg.inflateSetDictionary(this.strm,t.dictionary),i!==Ig)))throw new Error(Up[i])}function zg(e,t){const i=new Pg(t);if(i.push(e),i.err)throw i.msg||Up[i.err];return i.result}Pg.prototype.push=function(e,t){const i=this.strm,n=this.options.chunkSize,r=this.options.dictionary;let s,o,a;if(this.ended)return!1;for(o=t===~~t?t:!0===t?Lg:Rg,"[object ArrayBuffer]"===Mg.call(e)?i.input=new Uint8Array(e):i.input=e,i.next_in=0,i.avail_in=i.input.length;;){for(0===i.avail_out&&(i.output=new Uint8Array(n),i.next_out=0,i.avail_out=n),s=Eg.inflate(i,o),s===Fg&&r&&(s=Eg.inflateSetDictionary(i,r),s===Ig?s=Eg.inflate(i,o):s===Og&&(s=Fg));i.avail_in>0&&s===Ng&&i.state.wrap>0&&0!==e[i.next_in];)Eg.inflateReset(i),s=Eg.inflate(i,o);switch(s){case Bg:case Og:case Fg:case Dg:return this.onEnd(s),this.ended=!0,!1}if(a=i.avail_out,i.next_out&&(0===i.avail_out||s===Ng))if("string"===this.options.to){let e=Gp.utf8border(i.output,i.next_out),t=i.next_out-e,r=Gp.buf2string(i.output,e);i.next_out=t,i.avail_out=n-t,t&&i.output.set(i.output.subarray(e,e+t),0),this.onData(r)}else this.onData(i.output.length===i.next_out?i.output:i.output.subarray(0,i.next_out));if(s!==Ig||0!==a){if(s===Ng)return s=Eg.inflateEnd(this.strm),this.onEnd(s),this.ended=!0,!0;if(0===i.avail_in)break}}return!0},Pg.prototype.onData=function(e){this.chunks.push(e)},Pg.prototype.onEnd=function(e){e===Ig&&("string"===this.options.to?this.result=this.chunks.join(""):this.result=jp.flattenChunks(this.chunks)),this.chunks=[],this.err=e,this.msg=this.strm.msg};var Hg=function(e,t){return(t=t||{}).raw=!0,zg(e,t)},Ug={Inflate:Pg,inflate:zg,inflateRaw:Hg,ungzip:zg,constants:Vp},{Inflate:Vg,inflate:qg,inflateRaw:jg,ungzip:$g}=Ug,Wg=qg,Gg=$g;var Zg=new Map([[1,function(e,t){let i=new Uint8Array(e);return Wg(i).buffer}],[2,function(e,t){let i=e.byteLength,n=new Uint8Array(i),r=Math.floor(i/t),s=new DataView(e);for(var o=0;o<t;o++)for(var a=0;a<r;a++)n[o+a*t]=s.getUint8(o*r+a);return n.buffer}],[3,function(e,t){return function(e){for(var t=e.byteLength%2!=0,i=e.byteLength-4,n=new DataView(e),r=0,s=0,o=0;o<i-1;o+=2){s=(s+(r=(r+n.getUint16(o,!0))%65535))%65535}if(t){s=(s+(r=(r+n.getUint8(i-1))%65535))%65535}var[a,l]=vp.unpack_from(">HH",e,i);if(l%=65535,r!=(a%=65535)||s!=l)throw'ValueError("fletcher32 checksum invalid")'}(e),e.slice(0,-4)}]]),Qg=class{constructor(e,t){this.fh=e,this.offset=t,this.depth=null}async init(){this.all_nodes=new Map,await this._read_root_node(),await this._read_children()}async _read_children(){let e=this.depth;for(;e>0;){for(var t of this.all_nodes.get(e))for(var i of t.get("addresses"))this._add_node(await this._read_node(i,e-1));e--}}async _read_root_node(){let e=await this._read_node(this.offset,null);this._add_node(e),this.depth=e.get("node_level")}_add_node(e){let t=e.get("node_level");this.all_nodes.has(t)?this.all_nodes.get(t).push(e):this.all_nodes.set(t,[e])}async _read_node(e,t){let i=await this._read_node_header(e,t);return i.set("keys",[]),i.set("addresses",[]),i}async _read_node_header(e){throw"NotImplementedError: must define _read_node_header in implementation class"}},Xg=class extends Qg{B_LINK_NODE=new Map([["signature","4s"],["node_type","B"],["node_level","B"],["entries_used","H"],["left_sibling","Q"],["right_sibling","Q"]]);async _read_node_header(e,t){let i=await up(this.B_LINK_NODE,this.fh,e);if(null!=t&&i.get("node_level")!=t)throw"node level does not match";return i}},Yg=class extends Xg{NODE_TYPE=0;constructor(e,t){super(e,t),this.ready=this.init()}async _read_node(e,t){let i=await this._read_node_header(e,t);e+=gp(this.B_LINK_NODE);let n=[],r=[],s=i.get("entries_used");for(var o=0;o<s;o++){let t=(await vp.unpack_from_async("<Q",this.fh,e))[0];e+=8;let i=(await vp.unpack_from_async("<Q",this.fh,e))[0];e+=8,n.push(t),r.push(i)}return n.push((await vp.unpack_from_async("<Q",this.fh,e))[0]),i.set("keys",n),i.set("addresses",r),i}symbol_table_addresses(){var e=[],t=this.all_nodes.get(0);for(var i of t)e=e.concat(i.get("addresses"));return e}},Kg=class extends Xg{NODE_TYPE=1;constructor(e,t,i){super(e,t),this.dims=i,this.ready=this.init()}async _read_node(e,t){let i=await this._read_node_header(e,t);e+=gp(this.B_LINK_NODE);var n=[],r=[];let s=i.get("entries_used");for(var o=0;o<s;o++){let[t,i]=await vp.unpack_from_async("<II",this.fh,e);e+=8;let s="<"+this.dims.toFixed()+"Q",o=vp.calcsize(s),a=await vp.unpack_from_async(s,this.fh,e);e+=o;let l=(await vp.unpack_from_async("<Q",this.fh,e))[0];e+=8,n.push(new Map([["chunk_size",t],["filter_mask",i],["chunk_offset",a]])),r.push(l)}return i.set("keys",n),i.set("addresses",r),i}async construct_data_from_chunks(e,t,i,n){var r,s,o;if(i instanceof Array){let e=i[0];if("REFERENCE"==e){if(8!=i[1])throw"NotImplementedError('Unsupported Reference type')";i="<u8";r="getUint64",s=!1,o=8}else{if("VLEN_STRING"!=e&&"VLEN_SEQUENCE"!=e)throw"NotImplementedError('datatype not implemented')";r="getVLENStruct",s=!1,o=16}}else[r,s,o]=wp(i);var a=t.reduce((function(e,t){return e*t}),1),l=e.reduce((function(e,t){return e*t}),1);let h=t.length;var c=1;e.slice().map((function(e){let t=c;return c*=e,t}));c=1;var d=t.slice().reverse().map((function(e){let t=c;return c*=e,t})).reverse(),u=new Array(a);let f=l*o;for(var p of this.all_nodes.get(0)){let i=p.get("keys"),a=p.get("addresses"),c=i.length;for(var g=0;g<c;g++){let c=i[g],p=a[g];var m;if(null==n)m=await this.fh.slice(p,p+f);else{m=await this.fh.slice(p,p+c.get("chunk_size"));let e=c.get("filter_mask");m=this._filter_chunk(m,e,n,o)}for(var b=c.get("chunk_offset").slice(),w=b.slice(),v=w.map((function(){return 0})),y=new yp(m),_=0;_<l;_++){for(var x=h-1;x>=0&&v[x]>=e[x];x--)v[x]=0,w[x]=b[x],x>0&&(v[x-1]+=1,w[x-1]+=1);if(w.slice(0,-1).every((function(e,i){return e<t[i]}))){let e=_*o,t=y[r](e,!s,o),i=w.slice(0,-1).reduce((function(e,t,i){return t*d[i]+e}),0);u[i]=t}v[h-1]+=1,w[h-1]+=1}}}return u}_filter_chunk(e,t,i,n){let r=i.length,s=e.slice();for(var o=r-1;o>=0;o--){if(t&1<<o)continue;let e=i[o],r=e.get("filter_id"),a=e.get("client_data");if(!Zg.has(r))throw'NotImplementedError("Filter with id:'+r.toFixed()+' not supported")';s=Zg.get(r)(s,n,a)}return s}},Jg=class extends Qg{B_TREE_HEADER=new Map([["signature","4s"],["version","B"],["node_type","B"],["node_size","I"],["record_size","H"],["depth","H"],["split_percent","B"],["merge_percent","B"],["root_address","Q"],["root_nrecords","H"],["total_nrecords","Q"]]);B_LINK_NODE=new Map([["signature","4s"],["version","B"],["node_type","B"]]);constructor(e,t){super(e,t),this.ready=this.init()}async _read_root_node(){let e=await this._read_tree_header(this.offset);this.address_formats=this._calculate_address_formats(e),this.header=e,this.depth=e.get("depth");let t=[e.get("root_address"),e.get("root_nrecords"),e.get("total_nrecords")],i=await this._read_node(t,this.depth);this._add_node(i)}async _read_tree_header(e){return await up(this.B_TREE_HEADER,this.fh,this.offset)}_calculate_address_formats(e){let t=e.get("node_size"),i=e.get("record_size"),n=0,r=0,s=new Map,o=e.get("depth");for(var a=0;a<=o;a++){let e,l,h,c="",d="",u="";if(0==a?(e=0,l=0,h=0):1==a?(e=8,c="<Q",l=this._required_bytes(n),d=this._int_format(l),h=0):(e=8,c="<Q",l=this._required_bytes(n),d=this._int_format(l),h=this._required_bytes(r),u=this._int_format(h)),s.set(a,[e,l,h,c,d,u]),a<o){let s=e+l+h;n=this._nrecords_max(t,i,s),r>0?r*=n:r=n}}return s}_nrecords_max(e,t,i){return Math.floor((e-10-i)/(t+i))}_required_bytes(e){return Math.ceil(_p(e)/8)}_int_format(e){return["<B","<H","<I","<Q"][e-1]}async _read_node(e,t){let[i,n,r]=e,s=this._read_node_header(i,t);i+=gp(this.B_LINK_NODE);let o=this.header.get("record_size"),a=[];for(let e=0;e<n;e++){let e=await this._parse_record(this.fh,i,o);i+=o,a.push(e)}let l=[],h=this.address_formats.get(t);if(0!=t){let[e,t,r,s,o,a]=h;for(let h=0;h<=n;h++){let n=(await vp.unpack_from_async(s,this.fh,i))[0];i+=e;let h=(await vp.unpack_from_async(o,this.fh,i))[0];i+=t;let c=h;r>0&&(c=(await vp.unpack_from_async(a,this.fh,i))[0],i+=r),l.push([n,h,c])}}return s.set("keys",a),s.set("addresses",l),s}async _read_node_header(e,t){let i=await up(this.B_LINK_NODE,this.fh,e);return i.set("node_level",t),i}*iter_records(){for(let e of this.all_nodes.values())for(let t of e)for(let e of t.get("keys"))yield e}_parse_record(e){throw"NotImplementedError"}},em=class extends Jg{NODE_TYPE=5;async _parse_record(e,t,i){let n=(await vp.unpack_from_async("<I",e,t))[0];t+=4;const r=await e.slice(t,t+7);return new Map([["namehash",n],["heapid",r]])}},tm=class extends Jg{NODE_TYPE=6;async _parse_record(e,t,i){let n=(await vp.unpack_from_async("<Q",e,t))[0];t+=8;const r=await e.slice(t,t+7);return new Map([["creationorder",n],["heapid",r]])}},im=class{constructor(e,t){this.ready=this.init(e,t)}async init(e,t){let i=await vp.unpack_from_async("<B",e,t+8);var n;if(0==i)n=await up(hm,e,t),this._end_of_sblock=t+cm;else{if(2!=i&&3!=i)throw"unsupported superblock version: "+i.toFixed();n=await up(dm,e,t),this._end_of_sblock=t+um}if(n.get("format_signature")!=am)throw"Incorrect file signature: "+n.get("format_signature");if(8!=n.get("offset_size")||8!=n.get("length_size"))throw"File uses non-64-bit addressing";this.version=n.get("superblock_version"),this._contents=n,this._root_symbol_table=null,this._fh=e}async get_offset_to_dataobjects(){if(0==this.version){var e=new rm(this._fh,this._end_of_sblock,!0);return await e.ready,this._root_symbol_table=e,e.group_offset}if(2==this.version||3==this.version)return this._contents.get("root_group_address");throw"Not implemented version = "+this.version.toFixed()}},nm=class{constructor(e,t){this.ready=this.init(e,t)}async init(e,t){let i=await up(bm,e,t);pp("HEAP"==i.get("signature")),pp(0==i.get("version"));let n=i.get("address_of_data_segment"),r=await e.slice(n,n+i.get("data_segment_size"));i.set("heap_data",r),this._contents=i,this.data=r}get_object_name(e){let t=new Uint8Array(this.data).indexOf(0,e)-e;return vp.unpack_from("<"+t.toFixed()+"s",this.data,e)[0]}},rm=class{constructor(e,t,i=!1){this.ready=this.init(e,t,i)}async init(e,t,i){var n;if(i)n=new Map([["symbols",1]]);else{if("SNOD"!=(n=await up(gm,e,t)).get("signature"))throw"incorrect node type";t+=mm}for(var r=[],s=n.get("symbols"),o=0;o<s;o++)r.push(await up(fm,e,t)),t+=pm;return i&&(this.group_offset=r[0].get("object_header_address")),this.entries=r,this._contents=n,this}assign_name(e){this.entries.forEach((function(t){let i=t.get("link_name_offset"),n=e.get_object_name(i);t.set("link_name",n)}))}get_links(e){var t={};return this.entries.forEach((function(i){let n=i.get("cache_type"),r=i.get("link_name");if(0==n||1==n)t[r]=i.get("object_header_address");else if(2==n){let n=i.get("scratch"),o=new ArrayBuffer(4),a=new Uint8Array(o);for(var s=0;s<4;s++)a[s]=n.charCodeAt(s);let l=vp.unpack_from("<I",o,0)[0];t[r]=e.get_object_name(l)}})),t}},sm=class{constructor(e,t){this.ready=this.init(e,t)}async init(e,t){let i=await up(wm,e,t);t+=vm;let n=i.get("collection_size")-vm,r=await e.slice(t,t+n);this.heap_data=r,this._header=i,this._objects=null}get objects(){if(null==this._objects){this._objects=new Map;for(var e=0;e<=this.heap_data.byteLength-_m;){let t=fp(ym,this.heap_data,e);if(0==t.get("object_index"))break;e+=_m;let i=this.heap_data.slice(e,e+t.get("object_size"));this._objects.set(t.get("object_index"),i),e+=mp(t.get("object_size"))}}return this._objects}},om=class{constructor(e,t){this.fh=e,this.ready=this.init(t)}async init(e){let t=await up(xm,this.fh,e);if(e+=gp(xm),pp("FRHP"==t.get("signature")),pp(0==t.get("version")),t.get("filter_info_size")>0)throw"Filter info size not supported on FractalHeap";if(t.get("btree_address_huge_objects")!=lm)throw"Huge objects not implemented in FractalHeap";t.set("btree_address_huge_objects",null),t.get("root_block_address")==lm&&t.set("root_block_address",null);let i=t.get("log2_maximum_heap_size"),n=this._min_size_nbits(i),r=new Map([["signature","4s"],["version","B"],["heap_header_adddress","Q"],["block_offset",`${n}B`]]);this.indirect_block_header=new Map(r),this.indirect_block_header_size=gp(r),2==(2&t.get("flags"))&&r.set("checksum","I"),this.direct_block_header=r,this.direct_block_header_size=gp(r);let s=t.get("maximum_direct_block_size");this._managed_object_offset_size=this._min_size_nbits(i);let o=Math.min(s,t.get("max_managed_object_size"));this._managed_object_length_size=this._min_size_integer(o);let a=t.get("starting_block_size"),l=t.get("table_width");if(!(a>0))throw"Starting block size == 0 not implemented";let h=Number(Math.floor(Math.log2(s)));pp(1n<<BigInt(h)==s);let c=Number(Math.floor(Math.log2(a)));pp(1n<<BigInt(c)==a),this._max_direct_nrows=h-c+2;let d=Math.floor(Math.log2(l));pp(1<<d==l),this._indirect_nrows_sub=d+c-1,this.header=t,this.nobjects=t.get("managed_object_count")+t.get("huge_object_count")+t.get("tiny_object_count");let u=[],f=t.get("root_block_address"),p=0;if(null!=f&&(p=t.get("indirect_current_rows_count")),p>0)for await(let e of this._iter_indirect_block(this.fh,f,p))u.push(e);else{let e=await this._read_direct_block(this.fh,f,a);u.push(e)}let g=u.reduce(((e,t)=>e+t.byteLength),0),m=new Uint8Array(g),b=0;u.forEach((e=>{m.set(new Uint8Array(e),b),b+=e.byteLength})),this.managed=m.buffer}async _read_direct_block(e,t,i){let n=await e.slice(t,t+i);return pp("FHDB"==fp(this.direct_block_header,n).get("signature")),n}get_data(e){let t=vp.unpack_from("<B",e,0)[0],i=t>>4&3,n=1;if(0==i){pp(0==t>>6);let i=this._managed_object_offset_size,r=xp(i,e,n);n+=i,i=this._managed_object_length_size;let s=xp(i,e,n);return this.managed.slice(r,r+s)}throw 1==i?"tiny objectID not supported in FractalHeap":2==i?"huge objectID not supported in FractalHeap":"unknown objectID type in FractalHeap"}_min_size_integer(e){return this._min_size_nbits(_p(e))}_min_size_nbits(e){return Math.ceil(e/8)}async*_iter_indirect_block(e,t,i){let n=await up(this.indirect_block_header,e,t);t+=this.indirect_block_header_size,pp("FHIB"==n.get("signature"));let r=n.get("block_offset").reduce(((e,t,i)=>e+(t<<8*i)),0);n.set("block_offset",r);let[s,o]=this._indirect_info(i),a=[];for(let i=0;i<s;i++){let n=(await vp.unpack_from_async("<Q",e,t))[0];if(t+=8,n==lm)break;let r=this._calc_block_size(i);a.push([n,r])}let l=[];for(let i=s;i<s+o;i++){let n=(await vp.unpack_from_async("<Q",e,t))[0];if(t+=8,n==lm)break;let r=this._calc_block_size(i),s=this._iblock_nrows_from_block_size(r);l.push([n,s])}for(let[t,i]of a){let n=await this._read_direct_block(e,t,i);yield n}for(let[t,i]of l)for await(let n of this._iter_indirect_block(e,t,i))yield n}_calc_block_size(e){let t=Math.floor(e/this.header.get("table_width"));return 2**Math.max(t-1,0)*this.header.get("starting_block_size")}_iblock_nrows_from_block_size(e){let t=Math.floor(Math.log2(e));return pp(2**t==e),t-this._indirect_nrows_sub}_indirect_info(e){let t,i,n=this.header.get("table_width"),r=e*n,s=this._max_direct_nrows*n;return e<=s?(t=r,i=0):(t=s,i=r-s),[t,i]}_int_format(e){return["B","H","I","Q"][e-1]}},am=vp.unpack_from("8s",new Uint8Array([137,72,68,70,13,10,26,10]).buffer)[0],lm=vp.unpack_from("<Q",new Uint8Array([255,255,255,255,255,255,255,255]).buffer)[0],hm=new Map([["format_signature","8s"],["superblock_version","B"],["free_storage_version","B"],["root_group_version","B"],["reserved_0","B"],["shared_header_version","B"],["offset_size","B"],["length_size","B"],["reserved_1","B"],["group_leaf_node_k","H"],["group_internal_node_k","H"],["file_consistency_flags","L"],["base_address_lower","Q"],["free_space_address","Q"],["end_of_file_address","Q"],["driver_information_address","Q"]]),cm=gp(hm),dm=new Map([["format_signature","8s"],["superblock_version","B"],["offset_size","B"],["length_size","B"],["file_consistency_flags","B"],["base_address","Q"],["superblock_extension_address","Q"],["end_of_file_address","Q"],["root_group_address","Q"],["superblock_checksum","I"]]),um=gp(dm),fm=new Map([["link_name_offset","Q"],["object_header_address","Q"],["cache_type","I"],["reserved","I"],["scratch","16s"]]),pm=gp(fm),gm=new Map([["signature","4s"],["version","B"],["reserved_0","B"],["symbols","H"]]),mm=gp(gm),bm=new Map([["signature","4s"],["version","B"],["reserved","3s"],["data_segment_size","Q"],["offset_to_free_list","Q"],["address_of_data_segment","Q"]]),wm=new Map([["signature","4s"],["version","B"],["reserved","3s"],["collection_size","Q"]]),vm=gp(wm),ym=new Map([["object_index","H"],["reference_count","H"],["reserved","I"],["object_size","Q"]]),_m=gp(ym),xm=new Map([["signature","4s"],["version","B"],["object_index_size","H"],["filter_info_size","H"],["flags","B"],["max_managed_object_size","I"],["next_huge_object_index","Q"],["btree_address_huge_objects","Q"],["managed_freespace_size","Q"],["freespace_manager_address","Q"],["managed_space_size","Q"],["managed_alloc_size","Q"],["next_directblock_iterator_address","Q"],["managed_object_count","Q"],["huge_objects_total_size","Q"],["huge_object_count","Q"],["tiny_objects_total_size","Q"],["tiny_object_count","Q"],["table_width","H"],["starting_block_size","Q"],["maximum_direct_block_size","Q"],["log2_maximum_heap_size","H"],["indirect_starting_rows_count","H"],["root_block_address","Q"],["indirect_current_rows_count","H"]]),km=class{constructor(e,t){this.ready=this.init(e,t)}async init(e,t){let i=(await vp.unpack_from_async("<B",e,t))[0];if(1==i)var[n,r,s]=await this._parse_v1_objects(e,t);else{if(i!="O".charCodeAt(0))throw"InvalidHDF5File('unknown Data Object Header')";var[n,r,s]=await this._parse_v2_objects(e,t)}this.fh=e,this.msgs=n,this.msg_data=r,this.offset=t,this._global_heaps={},this._header=s,this._filter_pipeline=null,this._chunk_params_set=!1,this._chunks=null,this._chunk_dims=null,this._chunk_address=null}get dtype(){let e=this.find_msg_type(Ym)[0].get("offset_to_message");return new kp(this.fh,e).dtype}get chunks(){return this._get_chunk_params().then((()=>this._chunks))}get shape(){let e=this.find_msg_type(Qm)[0].get("offset_to_message");return async function(e,t){let i=(await vp.unpack_from_async("<B",e,t))[0];var n;if(1==i)pp(1==(n=await up(Im,e,t)).get("version")),t+=Nm;else{if(2!=i)throw"InvalidHDF5File('unknown dataspace message version')";pp(2==(n=await up(Fm,e,t)).get("version")),t+=Bm}let r=n.get("dimensionality"),s=await vp.unpack_from_async("<"+(2*r).toFixed()+"I",e,t);return s.filter((function(e,t){return t%2==0}))}(this.fh,e)}async get_filter_pipeline(){if(null!=this._filter_pipeline)return this._filter_pipeline;let e=this.find_msg_type(tb);if(!e.length)return this._filter_pipeline=null,this._filter_pipeline;var t=e[0].get("offset_to_message");let[i,n]=await vp.unpack_from_async("<BB",this.fh,t);t+=vp.calcsize("<BB");var r=[];if(1==i){await vp.unpack_from_async("<HI",this.fh,t),t+=vp.calcsize("<HI");for(var s=0;s<n;s++){let e=await up(Gm,this.fh,t);t+=Zm;let i=mp(e.get("name_length"),8),n="<"+i.toFixed()+"s",s=(await vp.unpack_from_async(n,this.fh,t))[0];e.set("filter_name",s),t+=i,n="<"+e.get("client_data_values").toFixed()+"I";let o=await vp.unpack_from_async(n,this.fh,t);e.set("client_data",o),t+=4*e.get("client_data_values"),e.get("client_data_values")%2&&(t+=4),r.push(e)}}else{if(2!=i)throw`version ${i} is not supported`;for(let e=0;e<n;e++){let e=new Map,i=this.fh,n=(await vp.unpack_from_async("<H",i,t))[0];t+=2,e.set("filter_id",n);let s=0;n>255&&(s=(await vp.unpack_from_async("<H",i,t))[0],t+=2);let o=(await vp.unpack_from_async("<H",i,t))[0];t+=2;let a=(1&o)>0;e.set("optional",a);let l,h=(await vp.unpack_from_async("<H",i,t))[0];t+=2,s>0&&(l=(await vp.unpack_from_async(`${s}s`,i,t))[0],t+=s),e.set("name",l);let c=await vp.unpack_from_async(`<${h}i`,i,t);t+=4*h,e.set("client_data_values",c),r.push(e)}}return this._filter_pipeline=r,this._filter_pipeline}find_msg_type(e){return this.msgs.filter((function(t){return t.get("type")==e}))}async get_attributes(){let e={},t=this.find_msg_type(ib);for(let i of t){let t=i.get("offset_to_message"),[n,r]=await this.unpack_attribute(t);e[n]=r}return e}async get_fillvalue(){var e,t=this.find_msg_type(Km)[0].get("offset_to_message");let i=(await vp.unpack_from_async("<B",this.fh,t))[0];var n,r,s;if(1==i||2==i)n=await up(qm,this.fh,t),t+=jm,e=n.get("fillvalue_defined");else{if(3!=i)throw'InvalidHDF5File("Unknown fillvalue msg version: "'+String(i);n=await up($m,this.fh,t),t+=Wm,e=32&n.get("flags")}if(e?(r=(await vp.unpack_from_async("<I",this.fh,t))[0],t+=4):r=0,r){let[e,i,n]=wp(await this.dtype);s=new yp(await this.fh.slice(t,t+n))[e](t,!i,n)}else s=0;return s}async unpack_attribute(e){let t=(await vp.unpack_from_async("<B",this.fh,e))[0];var i,n;if(1==t)pp(1==(i=await up(Am,this.fh,e)).get("version")),e+=Em,n=8;else{if(3!=t)throw"unsupported attribute message version: "+t;pp(3==(i=await up(Tm,this.fh,e)).get("version")),e+=Mm,n=1}let r=i.get("name_size"),s=(await vp.unpack_from_async("<"+r.toFixed()+"s",this.fh,e))[0];var o;s=s.replace(/\x00$/,""),e+=mp(r,n);try{o=await new kp(this.fh,e).dtype}catch(e){return console.warn("Attribute "+s+" type not implemented, set to null."),[s,null]}e+=mp(i.get("datatype_size"),n);let a=await this.determine_data_shape(this.fh,e),l=a.reduce((function(e,t){return e*t}),1);if(e+=mp(i.get("dataspace_size"),n),5===o.datatype_class)h=await this.fh.slice(e,e+o.size);else{var h=await this._attr_value(o,this.fh,l,e);0==a.length&&(h=h[0])}return[s,h]}async determine_data_shape(e,t){let i=(await vp.unpack_from_async("<B",e,t))[0];var n;if(1==i)pp(1==(n=await up(Im,e,t)).get("version")),t+=Nm;else{if(2!=i)throw"unknown dataspace message version";pp(2==(n=await up(Fm,e,t)).get("version")),t+=Bm}let r=n.get("dimensionality");return await vp.unpack_from_async("<"+r.toFixed()+"Q",e,t)}async _attr_value(e,t,i,n){var r=new Array(i);if(e instanceof Array){let h=e[0];for(var s=0;s<i;s++)if("VLEN_STRING"==h){let i=e[2];var[o,a]=await this._vlen_size_and_data(t,n);const l=new TextDecoder(0==i?"ascii":"utf-8");r[s]=l.decode(a),n+=16}else if("REFERENCE"==h){var l=await vp.unpack_from_async("<Q",t,n);r[s]=l,n+=8}else{if("VLEN_SEQUENCE"!=h)throw"NotImplementedError";{let i=e[1];var[o,a]=this._vlen_size_and_data(t,n);r[s]=this._attr_value(i,a,o,0),n+=16}}}else{let[o,a,l]=wp(e);const h=await t.slice(n,n+i*l);let c=new yp(h,0),d=0;for(s=0;s<i;s++)r[s]=c[o](d,!a,l),d+=l}return r}async _vlen_size_and_data(e,t){let i=(await vp.unpack_from_async("<I",e,t))[0],n=await up(Sm,e,t+4),r=n.get("collection_address");var s;return pp(n.get("collection_address")<Number.MAX_SAFE_INTEGER),r in this._global_heaps||(s=new sm(this.fh,r),await s.ready,this._global_heaps[r]=s),[i,(s=this._global_heaps[r]).objects.get(n.get("object_index"))]}async _parse_v1_objects(e,t){let i=await up(Rm,e,t);pp(1==i.get("version"));let n=i.get("total_header_messages");for(var r=i.get("object_header_size"),s=t+gp(Rm),o=await e.slice(s,s+r),a=[[s,r]],l=0,h=0,c=new Array(n),d=0;d<n;d++){h>=r&&([s,r]=a[++l],h=0);let t=await up(Om,e,s+h),i=s+h+Dm;if(t.set("offset_to_message",i),t.get("type")==nb){var[u,f]=await vp.unpack_from_async("<QQ",e,i);a.push([u,f])}h+=Dm+t.get("size"),c[d]=t}return[c,o,i]}async _parse_v2_objects(e,t){var[i,n,r]=await this._parse_v2_header(e,t);t=r;for(var s=[],o=i.get("size_of_chunk_0"),a=e.slice(t,t+=o),l=[[r,o]],h=0,c=0;;){if(c>=o-zm){let e=l[++h];if(null==e)break;[r,o]=e,c=0}let t=await up(Pm,e,r+c),i=r+c+zm+n;if(t.set("offset_to_message",i),t.get("type")==nb){var[d,u]=await vp.unpack_from_async("<QQ",e,i);l.push([d+4,u-4])}c+=zm+t.get("size")+n,s.push(t)}return[s,a,i]}async _parse_v2_header(e,t){let i=await up(Lm,e,t);var n;if(t+=gp(Lm),pp(2==i.get("version")),n=4&i.get("flags")?2:0,pp(0==(16&i.get("flags"))),32&i.get("flags")){let n=await vp.unpack_from_async("<4I",e,t);t+=16,i.set("access_time",n[0]),i.set("modification_time",n[1]),i.set("change_time",n[2]),i.set("birth_time",n[3])}let r=["<B","<H","<I","<Q"][3&i.get("flags")];return i.set("size_of_chunk_0",(await vp.unpack_from_async(r,e,t))[0]),[i,n,t+=vp.calcsize(r)]}async find_link(e){if(this._links){for(link of this._links)if(e===link[0])return link}else{const t=[];for await(const i of this.iter_links()){if(e===i[0])return i;t.push(i)}this._links=t}}async get_links(){const e=[];for await(const t of this.iter_links())e.push(t);return Object.fromEntries(e)}async*iter_links(){for(let e of this.msgs)e.get("type")==rb?yield*this._iter_links_from_symbol_tables(e):e.get("type")==Jm?yield this._get_link_from_link_msg(e):e.get("type")==Xm&&(yield*this._iter_link_from_link_info_msg(e))}async*_iter_links_from_symbol_tables(e){pp(16==e.get("size"));let t=await up(Hm,this.fh,e.get("offset_to_message"));yield*this._iter_links_btree_v1(t.get("btree_address"),t.get("heap_address"))}async*_iter_links_btree_v1(e,t){let i=new Yg(this.fh,e);await i.ready;let n=new nm(this.fh,t);await n.ready;for(let e of i.symbol_table_addresses()){let t=new rm(this.fh,e);await t.ready,t.assign_name(n),yield*Object.entries(t.get_links(n))}}async _get_link_from_link_msg(e){let t=e.get("offset_to_message");return await this._decode_link_msg(this.fh,t)[1]}async _decode_link_msg(e,t){let[i,n]=await vp.unpack_from_async("<BB",e,t);t+=2,pp(1==i);let r,s,o=2**(3&n),a=(16&n)>0,l=(4&n)>0;(8&n)>0?(r=(await vp.unpack_from_async("<B",e,t))[0],t+=1):r=0,pp([0,1].includes(r)),l&&(s=(await vp.unpack_from_async("<Q",e,t))[0],t+=8);let h=0;a&&(h=(await vp.unpack_from_async("<B",e,t))[0],t+=1);let c=0==h?"ascii":"utf-8",d=["<B","<H","<I","<Q"][3&n],u=(await vp.unpack_from_async(d,e,t))[0];t+=o;let f,p=new TextDecoder(c).decode(await e.slice(t,t+u));if(t+=u,0==r)f=(await vp.unpack_from_async("<Q",e,t))[0];else if(1==r){let i=(await vp.unpack_from_async("<H",e,t))[0];t+=2,f=new TextDecoder(c).decode(await e.slice(t,t+i))}return[s,[p,f]]}async*_iter_link_from_link_info_msg(e){let t=e.get("offset_to_message"),i=await this._decode_link_info_msg(this.fh,t),n=i.get("heap_address"),r=i.get("name_btree_address"),s=i.get("order_btree_address");null!=r&&(yield*this._iter_links_btree_v2(r,s,n))}async*_iter_links_btree_v2(e,t,i){let n,r=new om(this.fh,i);await r.ready;const s=null!=t;s?(n=new tm(this.fh,t),await n.ready):(n=new em(this.fh,e),await n.ready);let o=new Map;for(let e of n.iter_records()){let t=r.get_data(e.get("heapid")),[i,n]=await this._decode_link_msg(t,0);const a=s?i:n[0];o.set(a,n)}let a=Array.from(o.keys()).sort();for(let e of a)yield o.get(e)}async _decode_link_info_msg(e,t){let[i,n]=await vp.unpack_from_async("<BB",e,t);pp(0==i),t+=2,(1&n)>0&&(t+=8);let r=(2&n)>0?Vm:Um,s=await up(r,e,t),o=new Map;for(let[e,t]of s.entries())o.set(e,t==Cm?null:t);return o}get is_dataset(){return this.find_msg_type(Qm).length>0}async get_data(){let e=this.find_msg_type(eb)[0].get("offset_to_message");var[t,i,n,r]=await this._get_data_message_properties(e);if(0==n)throw"Compact storage of DataObject not implemented";return 1==n?this._get_contiguous_data(r):2==n?this._get_chunked_data(e):void 0}async _get_data_message_properties(e){let t,i,n,[r,s,o]=await vp.unpack_from_async("<BBB",this.fh,e);return 1==r||2==r?(t=s,i=o,n=e,n+=vp.calcsize("<BBB"),n+=vp.calcsize("<BI"),pp(1==i||2==i)):3!=r&&4!=r||(i=s,n=e,n+=vp.calcsize("<BB")),pp(r>=1&&r<=4),[r,t,i,n]}async _get_contiguous_data(e){let[t]=await vp.unpack_from_async("<Q",this.fh,e);const i=await this.shape,n=await this.dtype;if(t==Cm){let e=i.reduce((function(e,t){return e*t}),1);return new Array(e)}var r=i.reduce((function(e,t){return e*t}),1);if(n instanceof Array){let e=n[0];if("REFERENCE"==e){if(8!=n[1])throw"NotImplementedError('Unsupported Reference type')";return await this.fh.slice(t,t+r)}if("VLEN_STRING"==e){let e=n[2];const i=new TextDecoder(0==e?"ascii":"utf-8");var s=[];for(o=0;o<r;o++){const[e,n]=await this._vlen_size_and_data(this.fh,t);s[o]=i.decode(n),t+=16}return s}throw"NotImplementedError('datatype not implemented')"}if(/[<>=!@\|]?(i|u|f|S)(\d*)/.test(n)){let[e,i,s]=wp(n),a=new Array(r);const l=await this.fh.slice(t,t+s*r);let h=new yp(l);for(var o=0;o<r;o++)a[o]=h[e](o*s,!i,s);return a}if(5===n.datatype_class)return this.fh.slice(t,t+n.size);throw"not Implemented - no proper dtype defined"}async _get_chunked_data(e){if(await this._get_chunk_params(),this._chunk_address==Cm)return[];var t=new Kg(this.fh,this._chunk_address,this._chunk_dims);await t.ready;const i=await this.dtype,n=await this.shape,r=await this.chunks,s=await this.get_filter_pipeline();let o=await t.construct_data_from_chunks(r,n,i,s);if(i instanceof Array&&/^VLEN/.test(i[0])){let e=i[0];for(var a=0;a<o.length;a++){let[t,n,r]=o[a];var l;n in this._global_heaps?l=this._global_heaps[n]:(l=new sm(this.fh,n),await l.ready,this._global_heaps[n]=l);let s=l.objects.get(r);if("VLEN_STRING"==e){let e=i[2];const t=new TextDecoder(0==e?"ascii":"utf-8");o[a]=t.decode(s)}}}return o}async _get_chunk_params(){if(!this._chunk_params_set){this._chunk_params_set=!0;var e=this.find_msg_type(eb)[0].get("offset_to_message"),[t,i,n,r]=await this._get_data_message_properties(e);if(2==n){var s;if(1==t||2==t){var o=(await vp.unpack_from_async("<Q",this.fh,r))[0];s=r+vp.calcsize("<Q")}else if(3==t){var[i,o]=await vp.unpack_from_async("<BQ",this.fh,r);s=r+vp.calcsize("<BQ")}pp(t>=1&&t<=3);var a="<"+(i-1).toFixed()+"I",l=await vp.unpack_from_async(a,this.fh,s);this._chunks=l,this._chunk_dims=i,this._chunk_address=o}}}};var Cm=vp.unpack_from("<Q",new Uint8Array([255,255,255,255,255,255,255,255]).buffer),Sm=new Map([["collection_address","Q"],["object_index","I"]]);gp(Sm);var Am=new Map([["version","B"],["reserved","B"],["name_size","H"],["datatype_size","H"],["dataspace_size","H"]]),Em=gp(Am),Tm=new Map([["version","B"],["flags","B"],["name_size","H"],["datatype_size","H"],["dataspace_size","H"],["character_set_encoding","B"]]),Mm=gp(Tm),Rm=new Map([["version","B"],["reserved","B"],["total_header_messages","H"],["object_reference_count","I"],["object_header_size","I"],["padding","I"]]),Lm=new Map([["signature","4s"],["version","B"],["flags","B"]]),Im=new Map([["version","B"],["dimensionality","B"],["flags","B"],["reserved_0","B"],["reserved_1","I"]]),Nm=gp(Im),Fm=new Map([["version","B"],["dimensionality","B"],["flags","B"],["type","B"]]),Bm=gp(Fm),Om=new Map([["type","H"],["size","H"],["flags","B"],["reserved","3s"]]),Dm=gp(Om),Pm=new Map([["type","B"],["size","H"],["flags","B"]]),zm=gp(Pm),Hm=new Map([["btree_address","Q"],["heap_address","Q"]]),Um=new Map([["heap_address","Q"],["name_btree_address","Q"]]),Vm=new Map([["heap_address","Q"],["name_btree_address","Q"],["order_btree_address","Q"]]),qm=new Map([["version","B"],["space_allocation_time","B"],["fillvalue_write_time","B"],["fillvalue_defined","B"]]),jm=gp(qm),$m=new Map([["version","B"],["flags","B"]]),Wm=gp($m),Gm=new Map([["filter_id","H"],["name_length","H"],["flags","H"],["client_data_values","H"]]),Zm=gp(Gm),Qm=1,Xm=2,Ym=3,Km=5,Jm=6,eb=8,tb=11,ib=12,nb=16,rb=17,sb=class{constructor(e,t){null==t?(this.parent=this,this.file=this):(this.parent=t,this.file=t.file),this.name=e}async init(e){const t=this.file.index;t&&this.name in t?this._links=t[this.name]:this._links=await e.get_links(),this._dataobjects=e,this._attrs=null,this._keys=null}get keys(){return null==this._keys&&(this._keys=Object.keys(this._links)),this._keys.slice()}get values(){return this.keys.map((e=>this.get(e)))}length(){return this.keys.length}_dereference(e){if(!e)throw"cannot deference null reference";let t=this.file._get_object_by_address(e);if(null==t)throw"reference not found in file";return t}async get(e){if("number"==typeof e)return this._dereference(e);var t=lb(e);if("/"==t)return this.file;if("."==t)return this;if(/^\//.test(t))return this.file.get(t.slice(1));if(""!=function(e){let t="/",i=e.lastIndexOf(t)+1,n=e.slice(0,i),r=new RegExp("^"+t+"+$"),s=new RegExp(t+"$");n&&!r.test(n)&&(n=n.replace(s,""));return n}(t))var[i,n]=t.split(/\/(.*)/);else var i=t,n=".";if(!(i in this._links))throw i+" not found in group";var r=lb(this.name+"/"+i);let s=this._links[i];if("string"==typeof s)try{return this.get(s)}catch(e){return null}var o=new km(this.file._fh,s);if(await o.ready,o.is_dataset){if("."!=n)throw r+" is a dataset, not a group";return new ab(r,o,this)}var a=new sb(r,this);return await a.init(o),a.get(n)}visit(e){return this.visititems(((t,i)=>e(t)))}visititems(e){var t=this.name.length;/\/$/.test(this.name)||(t+=1);for(var i=this.values.slice();i;){let n=i.shift();1==i.length&&console.log(n);let r=e(n.name.slice(t),n);if(null!=r)return r;n instanceof sb&&(i=i.concat(n.values))}return null}get attrs(){return null==this._attrs&&(this._attrs=this._dataobjects.get_attributes()),this._attrs}},ob=class extends sb{constructor(e,t,i){super("/",null),this.ready=this.init(e,t,i)}async init(e,t,i){var n=new im(e,0);await n.ready;var r=await n.get_offset_to_dataobjects(),s=new km(e,r);if(await s.ready,this.parent=this,this.file=this,this.name="/",this._dataobjects=s,this._attrs=null,this._keys=null,this._fh=e,this.filename=t||"",this.mode="r",this.userblock_size=0,i&&i.index)this.index=i.index;else{let t;if(i&&i.indexOffset)t=i.indexOffset;else{const e=await this.attrs;if(e.hasOwnProperty("_index_offset"))t=e._index_offset;else{const e=this.indexName||"_index",i=await s.find_link(e);i&&(t=i[1])}}if(t)try{const i=new km(e,t);await i.ready;const n=await i.get_data(),r=Gg(n),s=(new TextDecoder).decode(r);this.index=JSON.parse(s)}catch(e){console.error(`Error loading index by offset ${e}`)}}this.index&&this.name in this.index?this._links=this.index[this.name]:this._links=await s.get_links()}_get_object_by_address(e){return this._dataobjects.offset==e?this:this.visititems((e=>{e._dataobjects.offset}))}},ab=class extends Array{constructor(e,t,i){super(),this.parent=i,this.file=i.file,this.name=e,this._dataobjects=t,this._attrs=null,this._astype=null}get value(){var e=this._dataobjects.get_data();return null==this._astype?this.getValue(e):e.astype(this._astype)}get shape(){return this._dataobjects.shape}get attrs(){return this._dataobjects.get_attributes()}get dtype(){return this._dataobjects.dtype}get fillvalue(){return this._dataobjects.get_fillvalue()}async to_array(){return function(e,t){const i=e.length,n=t.reduce(((e,t)=>e*t),1);i!==n&&console.warn(`shape product: ${n} does not match length of flattened array: ${i}`);let r=e;const s=t.slice(1).reverse();for(let e of s){const t=[],{length:i}=r;let n=0;for(;n<i;)t.push(r.slice(n,n+=e));r=t}return r}
+/*! pako 2.0.4 https://github.com/nodeca/pako @license (MIT AND Zlib) */(await this.value,await this.shape)}async getValue(e){return(await this.dtype).startsWith("S")?(await e).map((e=>e.substr(0,e.indexOf("\0")))):e}};function lb(e){return e.replace(/\/(\/)+/g,"/")}async function hb(e){var t;e.url&&("function"==typeof(t=e.url).slice&&"function"==typeof t.arrayBuffer)&&(e.file=e.url,e.url=void 0);const i=void 0!==e.url;let n=e.reader?e.reader:function(e){if(e.url)return new lp(e);if(e.path)return new NodeLocalFile(e);if(e.file)return new dp(e.file);throw Error("One of 'url', 'path (node only)', or 'file (browser only)' must be specified")}(e);const r=e.fetchSize||2e3,s=e.maxSize||2e5;i&&(n=new hp({file:n,fetchSize:r,maxSize:s}));const o=new cb(n),a=await async function(e){let t;if(e.indexReader)t=e.indexReader;else{if(e.index)return e.index;e.indexURL?t=new lp({url:e.indexURL}):e.indexPath?t=new NodeLocalFile({path:e.indexPath}):e.indexFile&&(t=new dp({file:e.indexFile}))}if(t){const e=await t.read(),i=(new TextDecoder).decode(e);return JSON.parse(i)}return}(e),l=e.indexOffset,h=function(e){if(e.url)return db(e.url);if(e.path)return db(e.path);if(e.file)return e.file.name}(e),c=new ob(o,h,{index:a,indexOffset:l});return await c.ready,c}class cb{constructor(e){this.fileReader=e}async slice(e,t){return this.fileReader.read(e,t-e)}}function db(e){const t=e.lastIndexOf("/");return t>0?e.substring(t+1):e}class ub{constructor(e,t=1e5){this.h5_file=e,this.bin_size=t,this.h5_obj=void 0}async fetch(){return this.h5_obj||(this.h5_obj=await hb({url:this.h5_file,fetchSize:1e6,maxSize:2e8})),this.h5_obj}async get_keys(){return(await this.fetch()).keys}async get_rd_signal(e=this.bin_size){let t=await this.fetch(),i=t.keys,n=new fb(i),r=n.get_rd_bins(),s=n.get_snp_bins();this.available_bins=[...new Set(r,s)],this.available_bins.includes(e)||(e=this.available_bins.at(-1));const o=await t.get("rd_chromosomes");await o.dtype;let a=await o.value,l=await this.rd_stat(t,i,e);var h=[],c=[],d=[],u=[],f=[],p=[];for(let n of a){var g=`his_rd_p_${n}_${e}`;let r=await this.get_chr_signal(t,i,n,e,g,l);h=h.concat(r);var m=`his_rd_p_${n}_${e}_GC`;let s=await this.get_chr_signal(t,i,n,e,m,l);c=c.concat(s);let o=`his_rd_p_${n}_${e}_partition_GC_merge`,a=await this.get_chr_signal(t,i,n,e,o,l);d=d.concat(a);let b=await this.rd_call_combined(t,i,n,e,l);u=u.concat(b);let w=`snp_likelihood_${n}_${e}_mask`,v=await this.get_baf_signals(t,i,n,e,w);f=f.concat(v[0]),p=p.concat(v[1])}this.callers=[],0!=u.length&&this.callers.push("ReadDepth"),0!=u.length&&this.callers.push("2D");var b={},w={RD_Raw:h,RD_Raw_gc_coor:c,ReadDepth:d,"2D":u,BAF1:f,BAF2:p};return b[e]=w,b}decode_segments(e){let t=[],i=[];for(let n of e)4294967295==n?(t.push(i),i=[]):i.push(n);return t}async rd_call_combined(e,t,i,n,r){let s,o=[],a=`his_rd_p_${i}_${n}_partition_GC_mosaic_segments_2d`;if(t.includes(a)){const t=await e.get(a);let i=await t.value;s=this.decode_segments(i)}let l=`his_rd_p_${i}_${n}_partition_GC_mosaic_call_2d`;if(t.includes(l)){const t=await e.get(l);let a=await t.to_array();s.forEach(((e,t)=>{e.forEach(((e,s)=>{o.push({chr:i,start:e*n,end:(e+1)*n,value:a[0][t]/r[4]*2})}))}))}return o}async rd_stat(e,t,i){let n,r=`rd_stat_${i}_auto`;if(t.includes(r)){const t=await e.get(r);n=await t.value}return n}async get_chr_signal(e,t,i,n,r,s){let o=[];if(t.includes(r)){const t=await e.get(r);(await t.value).forEach(((e,t)=>{o.push({chr:i,start:t*n,end:(t+1)*n,value:e/s[4]*2})}))}return o}async get_baf_signals(e,t,i,n,r){let s=[],o=[];if(t.includes(r)){let t=await e.get(r);(await t.to_array()).forEach(((e,t)=>{let r=Math.max(...e);const a=e.indexOf(r);let l=Math.max(a/200,1-a/200);s.push({chr:i,start:t*n,end:(t+1)*n,value:-2*l}),.5!=l&&o.push({chr:i,start:t*n,end:(t+1)*n,value:-2*(1-l)})}))}return[s,o]}async get_baf_signals_v2(e,t,i,n,r){let s=[],o=[];if(t.includes(r)){let t=await e.get(r);(await t.to_array()).forEach(((e,t)=>{isNaN(e)||(s.push({chr:i,start:t*n,end:(t+1)*n,value:-2*(.5-e)}),.5!=e&&o.push({chr:i,start:t*n,end:(t+1)*n,value:-2*(.5+e)}))}))}return console.log(i,s,o),[s,o]}}class fb{constructor(e){this.signals=e}get_rd_bins(){let e=[];this.signals.forEach((t=>{let i=t.match(/^his_rd_p_(.*)_(\d+)$/);i&&e.push({chr:i[1],bin_size:i[2]})}));return[...new Set(e.map((e=>Number(e.bin_size))))]}get_snp_bins(){let e=[];this.signals.forEach((t=>{let i=t.match(/^snp_likelihood_(.*)_(\d+)_mask$/);i&&e.push({chr:i[1],bin_size:i[2]})}));return[...new Set(e.map((e=>Number(e.bin_size))))]}}function pb(e){let t=function(e){if(e.length<4)return e;let t,i,n,r,s,o;return t=e.slice().sort(((e,t)=>e-t)),t.length/4%1==0?(i=.5*(t[t.length/4]+t[t.length/4+1]),n=.5*(t[t.length*(3/4)]+t[t.length*(3/4)+1])):(i=t[Math.floor(t.length/4+1)],n=t[Math.ceil(t.length*(3/4)+1)]),r=n-i,s=n+1.5*r,o=i-1.5*r,t.filter((e=>e>=o&&e<=s))}(e);const 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isNaN(e)||isNaN(t)||t<=0?NaN:0===e?.5:.5+.5*(bb(.5*t,.5,1)-bb(.5*t,.5,t/(t+e*e)))*Math.sign(e)}function bb(e,t,i){if(0==i)return 0;if(1==i)return 1;{let n=_b(e+t)-_b(e)-_b(t)+e*Math.log(i)+t*Math.log(1-i);return i<(e+1)/(e+t+2)?Math.exp(n)*wb(e,t,i)/e:1-Math.exp(n)*wb(t,e,1-i)/t}}function wb(e,t,i,n=1e3){let r=1,s=1,o=1,a=e+t,l=e+1,h=e-1,c=1-a*i/l;for(let d=0;d<=n;d++){let n=parseFloat(d+1),u=n+n,f=n*(t-n)*i/((h+u)*(e+u)),p=r+f*s,g=c+f*o;f=-(e+n)*(a+n)*i/((l+u)*(e+u));let m=g+f*c,b=r;if(s=p/m,o=g/m,r=(p+f*r)/m,c=1,Math.abs(r-b)<3e-7*Math.abs(r))return r}}function vb(e){if(0==e||1==e)return 1;return e*vb(e-1)}function yb(e){let t;var i=[75122.633153,80916.6278952,36308.2951477,8687.24529705,1168.92649479,83.8676043424,2.50662827511],n=0,r=1;if(0==e)t=1e99;else if(e%1==0)t=vb(e-1);else{for(let t=0;t<i.length;t++)n+=i[t]*Math.pow(e,t),r*=e+t;t=n*Math.pow(e+5.5,e+.5)*Math.exp(-(e+5.5))/r}return t}function _b(e){return Math.log(yb(e))}var xb={TdistributionCDF:mb,gamma:yb,t_test_1_sample:function(e,t,i,n){0==i&&(i=1);var r=(e-t)/i*Math.sqrt(n);return 1-mb(Math.abs(r),n-1)},t_test_2_samples:function(e,t,i,n,r,s){0==t&&(t=1),0==r&&(r=1);var o=(e-n)/Math.sqrt(t**2/i+r**2/s),a=(t**2/i+r**2/s)**2*(i-1)*(s-1)/(t**4*(s-1)/i**2+r**4*(i-1)/s**2);return 1-mb(Math.abs(o),parseInt(a+.5))}};function kb(e){return e.reduce((function(e,t){return e>t?e:t}))}function Cb(e,t,i,n){return t*Math.exp(-1*(e-i)**2/(2*n**2))/Math.sqrt(2*Math.PI)/n}function Sb(e,t,i,n){return Math.exp(-1*(e-i)**2/(t**2+n**2))}function Ab(e,t){let i;try{i=e.reduce(((e,i,n)=>e+Math.min(i,t[n])))}catch{return console.log("Failed to find likelihood overlap: ",e,t),0}return i}function Eb(e,t,i,n){return 0==t&&0==n?{nl:.5*(e+i),ne:0}:{nl:(e*n*n+i*t*t)/(t*t+n*n),ne:Math.sqrt(t*t*n*n/(t*t+n*n))}}function Tb(e,t){let i=parseInt(t*(e.length-1)),n=t*(e.length-1)-i;return i<e.length-1?e[i]*(1-n)+e[i+1]*n:e[i]}function Mb(e){const t=e.length,i=Math.max(...e);let n=e.indexOf(i);n>Math.floor(t/2)&&(n=t-1-n);const r=(t/2-n)/(t+1),s=Math.floor((t/2+n)/2),o=t-1-s;let a=e.slice(s,o+1).reduce(((e,t)=>e+t),0)/e.reduce(((e,t)=>e+t),0);return n===Math.floor(t/2)&&(a=1),{mean:r,p:a}}var Rb=class{constructor(e,t){this.wigFeatures=e,this.binSize=t}get_fit(){var e=new gb.GetFit(this.wigFeatures),[t,i]=e.fit_data();return{globalMean:t,globalStd:i}}async call_2d(e=null,t=null,i="both",n=.1,r=0,s=10,o=0){let a=this.get_fit();this.globalMean=a.globalMean,this.globalStd=a.globalStd;let l=null==e?.05*this.binSize/3e9:e,h=null==t?parseInt(this.binSize/1e4):t,c=[],d=[],u=[],f=[],p=[],g=[];for(const[e,t]of Object.entries(this.wigFeatures)){let e=[],i=[],s=[];t.forEach(((t,n)=>{t.hets_count>4&&t.dp_count>h&&(e.push([n]),i.push(t.binScore),s.push(t.likelihood_score),delete t.likelihood_score)}));let o=[];for(let e=1;e<i.length;e++)o.push(Math.abs(i[e]-i[e-1]));let a=[0];for(let e=1;e<o.length;e++)a.push(Math.min(o[e-1],o[e]));a.push(0);let g=i.map(((e,t)=>Math.sqrt(Math.sqrt(e)**2+this.globalStd**2+Math.pow(a[t]/2,2)))),m=[];for(let t=0;t<e.length-1;t++){let n=0;try{n=Ab(s[t],s[t+1])}catch{console.log("Overlap failed: ",t,s[t],e[t+1],s[t+1])}let r=Sb(i[t],g[t],i[t+1],g[t+1]);m.push(r*n)}for(;m.length>0;){m=m.filter((e=>"number"==typeof e));let t=kb(m);if(isNaN(t)&&console.log("NaN value",m),t<l)break;let n,r,o=m.indexOf(t),a=Eb(i[o],g[o],i[o+1],g[o+1]);try{n=s[o].map(((e,t)=>e*s[o+1][t])),r=n.reduce(((e,t)=>e+t))}catch{console.log(s),console.log("max_overlap:",t,o,m.length),console.log("likelihood: ",o,s[o],s[o+1]),console.log("nlh: ",r)}if(i[o]=a.nl,g[o]=a.ne,s[o]=n.map((function(e){return e/r})),e[o].push(...e[o+1]),i.splice(o+1,1),g.splice(o+1,1),e.splice(o+1,1),s.splice(o+1,1),m.splice(o,1),o<m.length){let e=Sb(i[o],g[o],i[o+1],g[o+1])*Ab(s[o],s[o+1]);m[o]=e}if(o>0){let e=Sb(i[o-1],g[o-1],i[o],g[o])*Ab(s[o-1],s[o]);m[o-1]=e}}let b=-1;for(;;){m=[];for(let t=0;t<i.length;t++)for(let r=t;r<i.length;r++)e[r][0]-e[t].at(-1)<n*(e[t].length+e[r].length)&&m.push(Sb(i[t],g[t],i[r],g[r])*Ab(s[t],s[r]));if(0==m.length)break;let t=kb(m);if(t<l)break;let r=0,o=1;for(;r<e.length-1;){let a=Sb(i[r],g[r],i[o],g[o])*Ab(s[r],s[o]);if(e[o][0]-e[r].at(-1)<n*(e[r].length+e[o].length)&&a==t){let t=Eb(i[r],g[r],i[r+1],g[r+1]);i[r]=t.nl,g[r]=t.ne;let n=s[r].map(((e,t)=>e*s[r+1][t])),a=n.reduce(((e,t)=>e+t));s[r]=n.map((function(e){return e/a})),e[r].push(...e[r+1]),e[r]=e[r].sort(((e,t)=>e-t)),i.splice(o,1),g.splice(o,1),e.splice(o,1),s.splice(o,1),o>=e.length&&(r+=1,o=r+1)}else o+=1,o>=e.length&&(r+=1,o=r+1)}if(b==e.length)break;b=e.length}e.forEach(((e,n)=>{let o=Mb(s[n]);e.length>1&&(e.forEach(((e,s)=>{d.push(t[e]),o.mean<=r&&c.push(t[e]),t[e].segment_score=i[n]})),u.push(i[n]),f.push(g[n]),p.push(s[n]))}))}let m=parseInt(1e3*(1-o));0==m&&(m=1);let b=gb.linspace(o,1,m),w={},v={};for(let e=10;e>-1;e--)for(let t=0;t<e/2+1;t++){let n,r,s=e-t,o=b.map(((t,i)=>1-t+t*e/2)),a=e/2;e>0?(n=.5-t/(t+s),r=b.map(((e,i)=>.5-(1-e+e*t)/(2-2*e+(t+s)*e)))):(n=0,r=b.map(((e,t)=>0*e)));for(let i=0;i<u.length;i++){let l=Cb(a*this.globalMean,1,u[i],f[i])*Tb(p[i],.5+n);i in v?v[i].push([e,t,s,l,1]):v[i]=[e,t,s,l,1];let h=0,c=0,d=0;o.forEach(((e,t)=>{if(!isNaN(r[t])){let n=Cb(e*this.globalMean,1,u[i],f[i])*Tb(p[i],.5+r[t]);h+=n,n>c&&(c=n,d=b[t])}})),i in w?w[i].push([e,t,s,h/b.length,d]):w[i]=[e,t,s,h/b.length,d]}for(let e=0;e<u.length;e++)if("germline"==i)w[e].sort(((e,t)=>e[3]-t[3]));else if(w[e].sort(((e,t)=>e[3]-t[3])),"both"==i&&(v[e].sort(((e,t)=>e[3]-t[3])),v[e][0][3]>w[e][0][3])){let t=w[e].filter((t=>t[0]!=v[e][0][0]&&t[1]<=v[e][0][1]));w[e]=[v[e][0]].push(...t)}for(let e=0;e<u.length;e++)w[e][0][0],w[e][0][0],u[e],this.globalMean,xb.t_test_1_sample(this.globalMean,u[e],f[e],g[e])}return{binScore:this.formatDataStructure(this.wigFeatures,"binScore",this.globalMean),segment_score:this.formatDataStructure(this.wigFeatures,"segment_score",this.globalMean)}}formatDataStructure(e,t,i=1){const n=[];for(const[r,s]of Object.entries(e))s.forEach((e=>{var r={...e};1!=i&&(r.value=e[t]/i*2),n.push(r)}));return n}formatDataStructure_BAF(e,t=2){const i=[],n=[];for(const[t,r]of Object.entries(this.wigFeatures))r.forEach((t=>{var r={...t},s={...t};let o=t[e];.5!=o&&(s.value=-2*(1-o),n.push(s)),r.value=-2*o,i.push(r)}));return[i,n]}};function Lb(e){for(var t=1,i=1,n=1*e,r=1;r<50;r++)t*=r,n+=(i*=-1)*Math.pow(e,2*r+1)/(t*(2*r+1));return 2*n/Math.sqrt(3.14159265358979)}function Ib(e,t,i,n,r){var s=new Bb(i.slice(n,r));return 0==s.std&&(s.std=t>0?t*s.mean/e:1),Ob(e,s.mean,s.std,r-n)/(r-n)}function Nb(e,t,i,n,r){var s=new Bb(i.slice(n,r));if(s.mean<e){var o=(s.max-s.mean)/(t*Math.sqrt(2));return Math.pow(.5*(1+Lb(o)),r-n)}o=(s.min-s.mean)/(t*Math.sqrt(2));return Math.pow(.5*(1-Lb(o)),r-n)}function Fb(e,t,i,n,r,s,o=1e3){for(var a=Ib(e,t,i,n,r),l=0,h=!1;a>s&!h&l<o;){h=!0,l+=1;var[c,d,u,f]=[1e10,1e10,1e10,1e10];if(n>0&&(c=Ib(e,t,i,n-1,r)),r-n>2)var d=Ib(e,t,i,n+1,r),u=Ib(e,t,i,n,r-1);if(r<i.length)var f=Ib(e,t,i,n,r+1);Math.min[f]<a&&(h=!1,c==Math.min[f]&&(n-=1,a=c),elif(d==Math.min[f]),n+=1,a=d,elif(u==Math.min[f]),r-=1,a=u,elif(f==Math.min[f]),r+=1,a=f)}return a<=s?r:0}class Bb{constructor(e){this.data=e,this.mean=e.reduce(((e,t)=>e+t))/e.length,this.std=Math.sqrt(e.reduce(((e,t)=>(t-this.mean)**2))/e.length)}}function Ob(e,t,i,n){0==i&&(i=1);var r=(e-t)/i*Math.sqrt(n);return 1-xb.TdistributionCDF(Math.abs(r),n-1)}function Db(e,t,i,n,r,s){0==t&&(t=1),0==r&&(r=1);var o=(e-n)/Math.sqrt(t**2/i+r**2/s),a=(t**2/i+r**2/s)**2*(i-1)*(s-1)/(t**4*(s-1)/i**2+r**4*(i-1)/s**2);return 1-xb.TdistributionCDF(Math.abs(o),parseInt(a+.5))}var Pb=class{constructor(e,t,i){this.rd=e,this.mean=t,this.std=i,this.bin_bands=[2,3,4,5,6,7,8,10,12,14,16,20,24,28,32,40,48,56,64,80,96,112,128]}get_rd_signal_bandwidth(e){var t=[];return e.forEach(((e,i)=>{var n=0;n=e>this.mean/4?this.mean/(this.std**2*e):4/this.std**2,t.push(n)})),t}meanShiftCaller(e=3){var t={};return Object.entries(this.rd).forEach((([i,n])=>{var r=new Array(n.length).fill(!1),s=new Array(n.length);for(let e=0;e<n.length;e++)r[e]||(s[e]=n[e]);this.bin_bands.forEach(((t,i)=>{var o=r.map(((e,t)=>!e)),a=[];Object.entries(n).forEach((([e,t])=>{a.push(t.binScore)}));var l=[0],h=0;for(let e=0;e<r.length;e++)r[e]?h>0&&(l.push(l[l.length-1]+h-1),h=0):h+=1;l.shift();for(let i=0;i<e;i++){var c=this.get_rd_signal_bandwidth(a),d=new Array(a.length).fill(0);for(let e=0;e<a.length;e++)for(let i=e-3*t;i<=e+3*t+1;i++)if(!(i<0||i>=a.length||Math.abs(e-i)>=a.length)){var u=(i-e)*Math.exp(-.5*(i-e)**2/t**2)*Math.exp(-.5*(a[e]-a[i])**2*c[e]);d[e]+=u}for(var f=new Array,p=0;p<d.length-1;p++)d[p]<0&d[p+1]>=0&&f.push(p);f.push(d.length-1),f=f.concat(l).sort(((e,t)=>e-t)),f=Array.from(new Set(f));var g=0;for(p=0;p<f.length;p++){var m=a.slice(g,f[p]+1),b=m.reduce(((e,t)=>e+t))/m.length;a.fill(b,g,f[p]+1),g=f[p]+1}}p=0;for(var w=0;p<s.length;p++)o[p]&&(s[p]=a[w],w++);for(f=new Array,p=0;p<s.length-1;p++){Math.abs(s[p+1]-s[p])>.01&&f.push(p+1)}f.unshift(0),f.push(s.length),r=new Array(this.rd.length).fill(!1);for(p=1;p<f.length;p++){var v=[f[p-1],f[p]],y=[f[p-1],f[p-1]];if(!(p>1))continue;y[0]=f[p-2];var _=[f[p],f[p]];if(!(p<f.length-1))continue;_[1]=f[p+1];var x=v[1]-v[0],k=y[1]-y[0],C=_[1]-_[0];if(x<=1)continue;var S=new Bb(s.slice(v[0],v[1]));if(C<=15||k<=15||x<=15){var A=1.8*Math.sqrt(s[y[0]]/this.mean)*this.std;if(Math.abs(s[y[0]]-s[v[0]])<A)continue;if(A=1.8*Math.sqrt(s[_[0]]/this.mean)*this.std,Math.abs(s[_[0]]-s[v[0]])<A)continue}else{var E=s.slice(y[0],y[1]),T=new Bb(E),M=s.slice(_[0],_[1]),R=new Bb(M);if(Db(S.mean,S.std,S.data.length,T.mean,T.std,T.data.length)>.01/genome_size*bin_size*(x+k))continue;if(Db(S.mean,S.std,S.data.length,R.mean,R.std,R.data.length)>.01/genome_size*bin_size*(x+C))continue}if(Ob(this.mean,S.mean,S.std,S.data.length)>.05)continue;let e=a.slice(v[0],v[1]);var L=new Bb(e);r.fill(!0,v[0],v[1]),s.fill(L.mean,v[0],v[1])}})),t[i]=s})),t}call_mean_shift(e=3){for(var t=new Array(this.rd.length).fill(!1),i=new Array(this.rd.length),n=0;n<this.rd.length;n++)t[n]||(i[n]=this.rd[n]);return this.bin_bands.forEach(((n,r)=>{var s=t.map(((e,t)=>!e)),o=[];s.forEach(((e,t)=>{e&&o.push(this.rd[t])}));for(var a=[0],l=0,h=0;h<t.length;h++)t[h]?l>0&&(a.push(a[a.length-1]+l-1),l=0):l+=1;a.shift();for(var c=0;c<e;c++){var d=this.get_rd_signal_bandwidth(o),u=new Array(o.length).fill(0);for(h=0;h<o.length;h++)for(var f=h-3*n;f<=h+3*n+1;f++)if(!(f<0||f>=o.length||Math.abs(h-f)>=o.length)){var p=(f-h)*Math.exp(-.5*(f-h)**2/n**2)*Math.exp(-.5*(o[h]-o[f])**2*d[h]);u[h]+=p}var g=new Array;for(h=0;h<u.length-1;h++)u[h]<0&u[h+1]>=0&&g.push(h);g.push(u.length-1),g=g.concat(a).sort(((e,t)=>e-t)),g=Array.from(new Set(g));var m=0;for(h=0;h<g.length;h++){var b=o.slice(m,g[h]+1),w=b.reduce(((e,t)=>e+t))/b.length;o.fill(w,m,g[h]+1),m=g[h]+1}}for(h=0,f=0;h<i.length;h++)s[h]&&(i[h]=o[f],f++);for(g=new Array,h=0;h<i.length-1;h++){Math.abs(i[h+1]-i[h])>.01&&g.push(h+1)}g.unshift(0),g.push(i.length),t=new Array(this.rd.length).fill(!1);for(h=1;h<g.length;h++){var v=[g[h-1],g[h]],y=[g[h-1],g[h-1]];if(h>1){y[0]=g[h-2];var _=[g[h],g[h]];if(h<g.length-1){_[1]=g[h+1];var x=v[1]-v[0],k=y[1]-y[0],C=_[1]-_[0];if(!(x<=1)){var S=new Bb(i.slice(v[0],v[1]));if(C<=15||k<=15||x<=15){var A=1.8*Math.sqrt(i[y[0]]/this.mean)*this.std;if(Math.abs(i[y[0]]-i[v[0]])<A)continue;if(A=1.8*Math.sqrt(i[_[0]]/this.mean)*this.std,Math.abs(i[_[0]]-i[v[0]])<A)continue}else{var E=i.slice(y[0],y[1]),T=new Bb(E),M=i.slice(_[0],_[1]),R=new Bb(M);if(Db(S.mean,S.std,S.data.length,T.mean,T.std,T.data.length)>3.483106931382794e-9*(x+k))continue;if(Db(S.mean,S.std,S.data.length,R.mean,R.std,R.data.length)>3.483106931382794e-9*(x+C))continue}if(!(Ob(this.mean,S.mean,S.std,S.data.length)>.05)){var L=new Bb(this.rd.slice(v[0],v[1]));t.fill(!0,v[0],v[1]),i.fill(L.mean,v[0],v[1])}}}}}})),i}cnv_calling(e=1e5){var t=(t=.25)*this.mean,i=this.mean-t,n=this.mean+t,r=2971e6,s=this.meanShiftCaller(),o={},a=[];return Object.entries(s).forEach((([l,h])=>{for(var c=!1;!c;){c=!0;var d=new Array(1).fill(0);for(let e=0;e<h.length-1;e++){Math.abs(h[e+1]-h[e])>.01&&d.push(e+1)}d.push(h.length);for(let e=0;e<d.length-2;e++){var u=Math.abs(h[d[e]]-h[d[e+1]]);if(u<t){var f=u+1,p=u+1;if(e>0&&(f=Math.abs(h[d[e]]-h[d[e-1]])),e<d.length-3&&(p=Math.abs(s[d[e+1]]-h[d[e+2]])),u<f&&u<p){c=!1;var g=new Bb(h.slice(d[e],d[e+2]));h.fill(g.mean,d[e],d[e+2]),d.splice(e+1,e+1)}}}}var m=[];Object.entries(this.rd[l]).forEach((([e,t])=>{m.push(t.binScore)}));for(var b,w=new Array(h.length).fill(""),v=0,y=.05*e/r;v<h.length;){for(var _=v,x=v;v<h.length&h[v]<i;)v+=1;if((C=v)>x+1){var k=Fb(this.mean,this.std,m,x,C,y);if(k){var C=k;w.fill("D",x,C)}}for(x=v;v<h.length&h[v]>n;)v+=1;(C=v)>x+1&&(k=Fb(this.mean,this.std,m,x,C,y))&&(C=k,w.fill("A",x,C)),v==_&&(v+=1)}for(v=0;v<h.length;){for(;v<h.length&""!=w[v];)v+=1;for(x=v;v<h.length&h[v]<i;)v+=1;(C=v)>x+1&&(Nb(this.mean,this.std,m,x,C)<1682935038707506e-26&&w.fill(["d"]*(C-x),x,C),v-=1),v+=1}(v=0)<h.length&&(b=w[v]),x=0;for(var S=[...m];v<h.length;){for(;w[v]==b&&!((v+=1)>=w.length););if(v>x){var A=new Bb(S.slice(x,v));S.fill(A.mean,x,v)}v<h.length&&(b=w[v]),x=v}for(o[l]=S,v=0;v<h.length;){if(""==(b=w[v])){v+=1;continue}for(x=v;v<h.length&b==w[v];)v+=1;let t,i=new Bb(S.slice(x,v)).mean/this.mean;t="D"==b?"deletion":"duplication";let n={chr:l,start:e*x+1,end:e*v,size:e*(v-x+1),value:2*i,event_type:t};a.push(n)}})),[o,a]}};class zb{constructor(e,t){this.allVariants=e,this.rowBinSize=1e4,this.binSize=t,this.binFactor=t/this.rowBinSize}async computeDepthFeatures(){const e=Object.keys(this.allVariants),t=[];for(let i of e){const e=this.allVariants[i];if(0===e.length)continue;const n=e[0];let r=0,s=0,o=n.start=n.start%this.binSize,a=o+this.binSize,l=0;for(let n of e){const e=n.start+1;l=Math.max(Math.floor((n.start-1)/this.binSize),0),e>a&&(s>0&&t.push({chr:i,start:o,end:a,value:r,bin:l,count:s}),r=0,o=n.start-n.start%this.binSize,a=o+this.binSize);const h=n.calls[9].info.DP;h&&(r+=Number.parseInt(h),s++)}s>0&&t.push({chr:i,start:o,end:a,value:r,bin:l,count:s})}return t}async computeReadDepth(){const e=Object.keys(this.allVariants);var t={};for(let n of e){const e=this.allVariants[n];var i;if(0!==e.length)for(let r of e){i=Math.max(Math.floor(r.start/this.rowBinSize),0),t[n]||(t[n]=[]),t[n][i]||(t[n][i]={chr:n,start:i*this.rowBinSize,end:(i+1)*this.rowBinSize,value:0,sum_score:0,count:0});const e=r.calls[9].info.DP;e&&(t[n][i].sum_score+=Number.parseInt(e),t[n][i].count++)}}var n={};for(let i of e){n[i]||(n[i]=[]);for(let e=0;e<t[i].length/this.binFactor;e++){const o=e;n[i][e]||(n[i][e]={chr:i,binScore:0,start:o*this.binSize,end:(o+1)*this.binSize});for(var r=10*e;r<10*e+10;r++)if(t[i][r]){var s=100*parseInt(t[i][r].sum_score/t[i][r].count);n[i][e].binScore+=s}}}return this.readDepthMeanshift(n)}readDepthMeanshift(e){var t=new gb.GetFit(e),[i,n]=t.fit_data(),r=new Pb(e,i,n),s=r.meanShiftCaller(),o=r.cnv_calling();return Object.entries(e).forEach((([e,t])=>{t.forEach(((t,i)=>{t.partition_level=parseInt(s[e][i]),t.partition_call=parseInt(o[0][e][i])}))})),[this.formatDataStructure(e,"binScore",i),this.formatDataStructure(e,"partition_level",i),this.formatDataStructure(e,"partition_call",i),o[1]]}formatDataStructure(e,t,i=1){const n=[];for(const[r,s]of Object.entries(e))s.forEach((e=>{var r={...e};1!=i&&(r.value=e[t]/i*2),n.push(r)}));return n}async computeBAF_v2(){const e=Object.keys(this.allVariants),t={},i=[],n=[];for(let o of e){const e=this.allVariants[o];if(0===e.length)continue;var r;for(let a of e){if(r=Math.max(Math.floor(a.start/this.binSize),0),t[o]||(t[o]=[]),!t[o][r]){if(r>0){let e=r-1;if(t[o][e]){const r=this.get_max_min_score(t[o][e]);if(.5!=r.value){let e=Object.assign({},r);e.value=-2*(1-r.value),n.push(e)}r.value=-2*r.value,t[o][e]=r,i.push(t[o][e])}}t[o][r]={chr:o,start:r*this.binSize,end:(r+1)*this.binSize,value:0,count:0,likelihood_score:[],min_score:0}}const e=a.calls[9];let l=e.genotype,h=e.info.AD.split(","),c=h[0],d=h[1];if(0==l[0]&&1==l[1]||1==l[0]&&0==l[1]){if(0==t[o][r].likelihood_score.length)t[o][r].likelihood_score=gb.linspace(0,1,100).map(((e,t)=>Hb(c,d,e)));else{var s=0;t[o][r].likelihood_score=gb.linspace(0,1,100).map(((e,i)=>{var n=t[o][r].likelihood_score[i]*Hb(c,d,e);return s+=n,n})),t[o][r].likelihood_score=gb.linspace(0,1,100).map(((e,i)=>t[o][r].likelihood_score[i]/s))}t[o][r].count++}}const a=this.get_max_min_score(t[o][r]);if(.5!=a.value){let e=Object.assign({},a);e.value=-2*(1-a.value),n.push(e)}a.value=-2*a.value,t[o][r]=a,i.push(t[o][r])}return[i,n]}format_BAF_likelihood(e){const t=[];for(const[i,n]of Object.entries(e))n.forEach((e=>{var i={...e};.5!=e.value&&(i.value=1-e.value,t.push(i))}));return t}get_max_min_score(e){if(e.likelihood_score.length>0){const t=Math.max(...e.likelihood_score),i=e.likelihood_score.indexOf(t);e.value=Math.max(i/100,1-i/100),e.min_score=Math.min(i/100,1-i/100)}else e.score=0;return e}async getAllbins(){const e=await this.computeDepthFeatures();return new gb.GetFit(e).fit_data(),e}async read_rd_baf(e="ReadDepth"){const t=Object.keys(this.allVariants);var i={};for(let e of t){const t=this.allVariants[e];var n;if(0!==t.length)for(let r of t){n=Math.max(Math.floor(r.start/this.rowBinSize),0),i[e]||(i[e]=[]),i[e][n]||(i[e][n]={chr:e,start:n*this.rowBinSize,end:(n+1)*this.rowBinSize,dp_sum_score:0,dp_count:0,hets_count:0,hets:[]});const t=r.calls[9],s=t.info.DP;s&&(i[e][n].dp_sum_score+=Number.parseInt(s),i[e][n].dp_count++);let o=t.info.AD.split(","),a=t.genotype;if(0==a[0]&&1==a[1]||1==a[0]&&0==a[1]){i[e][n].hets_count++;let t=parseInt(o[0]),r=parseInt(o[1]);i[e][n].hets.push({ref:t,alt:r})}}}var r,s=this.adjust_bin_size(i);if("ReadDepth"==e){r=this.readDepthMeanshift(s);var o=this.formatDataStructure_BAF(s,"max_likelihood")}else if("2D"==e){let e=new Rb(s,this.binSize),t=await e.call_2d();r=[t.binScore,[],t.segment_score];o=e.formatDataStructure_BAF("max_likelihood")}return[r,o]}formatDataStructure_BAF(e,t,i=2){const n=[],r=[];for(const[i,s]of Object.entries(e))s.forEach((e=>{delete e.likelihood_score;var i={...e},s={...e};let o=e[t];.5!=o&&(s.value=-2*(1-o),r.push(s)),i.value=-2*o,n.push(i)}));return[n,r]}adjust_bin_size(e){const t=Object.keys(this.allVariants);var i={};for(let s of t){i[s]||(i[s]=[]);for(let t=0;t<e[s].length/this.binFactor;t++){const o=t;i[s][t]||(i[s][t]={chr:s,start:o*this.binSize,end:(o+1)*this.binSize,dp_count:0,hets_count:0,binScore:0,likelihood_score:[]});for(var n=10*t;n<10*t+10;n++)if(e[s][n]){var r=100*parseInt(e[s][n].dp_sum_score/e[s][n].dp_count);i[s][t].binScore+=r,i[s][t].dp_count+=e[s][n].dp_count,i[s][t].hets_count+=e[s][n].hets_count,0!=e[s][n].hets.length&&e[s][n].hets.forEach(((e,n)=>{if(0==i[s][t].likelihood_score.length)i[s][t].likelihood_score=gb.linspace(0,1,100).map(((t,i)=>Hb(e.ref,e.alt,t)));else{var r=0;i[s][t].likelihood_score=gb.linspace(0,1,100).map(((n,o)=>{var a=i[s][t].likelihood_score[o]*Hb(e.ref,e.alt,n);return r+=a,a})),i[s][t].likelihood_score=gb.linspace(0,1,100).map(((e,n)=>i[s][t].likelihood_score[n]/r))}}))}const a=this.get_max_min_score(i[s][t]);i[s][t].max_likelihood=a.value}}return i}}function Hb(e,t,i,n=!0){return i**e*(1-i)**t+i**t*(1-i)**e}class Ub extends Th{constructor(e,t){super(e,t),this.featureType="numeric",this.paintAxis=lu,e.max||(this.defaultScale=!0,this.autoscale=!1),this.height=void 0!==e.height?e.height:250}async init(e){this.type="cnvpytor",this.graphType=e.graphType||"points",this.bin_size=e.bin_size||1e5,this.signal_name=e.signal_name||"rd_snp",this.cnv_caller=e.cnv_caller||"2D",this.colors=e.colors||["gray","black","green","blue"],super.init(e)}get supportsWholeGenome(){return!0}get_signals(){let e=[];return"rd_snp"==this.signal_name?e=["RD_Raw","RD_Raw_gc_coor",this.cnv_caller,"BAF1","BAF2"]:"rd"==this.signal_name?e=["RD_Raw","RD_Raw_gc_coor",this.cnv_caller]:"snp"==this.signal_name?e=["BAF1","BAF2"]:"cnh"==this.signal_name&&(e=[this.cnv_caller]),e}get_signal_colors(){return[{singal_name:"RD_Raw",color:this.colors[0]},{singal_name:"RD_Raw_gc_coor",color:this.colors[1]},{singal_name:"ReadDepth",color:this.colors[2]},{singal_name:"2D",color:this.colors[2]},{singal_name:"BAF1",color:this.colors[3]},{singal_name:"BAF2",color:this.colors[3]}]}async postInit(){if("vcf"==this.config.format){this.featureSource=ld(this.config,this.browser.genome),this.header=await this.getHeader();var e=this.featureSource.reader.features.reduce((function(e,t){return e[t.chr]=e[t.chr]||[],e[t.chr].push(t),e}),Object.create(null));const t=new zb(e,this.bin_size);let i,n,r;this.wigFeatures_obj={},this.wigFeatures_obj[this.bin_size]={},"2D"==this.config.cnv_caller?(r=await t.read_rd_baf("2D"),i=r[0],n=r[1],this.wigFeatures_obj[this.bin_size]["2D"]=i[2],this.available_callers=["2D"]):(r=await t.read_rd_baf(),i=r[0],n=r[1],this.wigFeatures_obj[this.bin_size].ReadDepth=i[2],this.available_callers=["ReadDepth"]),this.wigFeatures_obj[this.bin_size].RD_Raw=i[0],this.wigFeatures_obj[this.bin_size].RD_Raw_gc_coor=i[1],this.wigFeatures_obj[this.bin_size].BAF1=n[0],this.wigFeatures_obj[this.bin_size].BAF2=n[1],this.available_bins=[this.bin_size],this.set_available_callers()}else this.cnvpytor_obj=new ub(this.config.url,this.bin_size),this.wigFeatures_obj=await this.cnvpytor_obj.get_rd_signal(this.bin_size),this.available_bins=this.cnvpytor_obj.available_bins,this.available_callers=this.cnvpytor_obj.callers,this.set_available_callers();this.tracks=[];const t=[];this.signals=this.get_signals(),this.signal_colors=this.get_signal_colors();for(let e in this.wigFeatures_obj)for(const[i,n]of Object.entries(this.wigFeatures_obj[e]))if(this.signals.includes(i)){let e={type:"wig",isMergedTrack:!0};e.features=n,e.name=i,e.color=this.signal_colors.filter((e=>e.singal_name===i)).map((e=>e.color));const r=await this.browser.createTrack(e);r?(r.autoscale=!1,this.tracks.push(r)):console.warn("Could not create track "+e),"function"==typeof r.postInit&&t.push(r.postInit())}this.flipAxis=!!this.config.flipAxis&&this.config.flipAxis,this.logScale=!!this.config.logScale&&this.config.logScale,this.autoscale=this.config.autoscale,this.autoscale||(this.dataRange={min:this.config.min||0,max:this.config.max});for(let e of this.tracks)e.autoscale=!1,e.dataRange=this.dataRange;return Promise.all(t)}set_available_callers(){this.available_callers.includes(this.cnv_caller)||(this.available_callers.length>0?this.cnv_caller=this.available_callers[0]:this.cnv_caller=null)}async getHeader(){if(!this.header){if("function"==typeof this.featureSource.getHeader){const e=await this.featureSource.getHeader();e&&(this.callSets=e.callSets||[]),this.header=e}this.sampleNames=this.callSets?this.callSets.map((e=>e.name)):[]}return this.header}get height(){return this._height}set height(e){if(this._height=e,this.tracks)for(let t of this.tracks)t.height=e,t.config.height=e}menuItemList(){let e=[];void 0!==this.flipAxis&&e.push({label:"Flip y-axis",click:()=>{this.flipAxis=!this.flipAxis,this.trackView.repaintViews()}}),e=e.concat(Ui.numericDataMenuItems(this.trackView)),e.push("<hr/>"),e.push("Bin Sizes");for(let t of this.available_bins){const i=Hi(t,t===this.bin_size);e.push({object:ft(i),click:async()=>{this.bin_size=t,await this.recreate_tracks(t),this.clearCachedFeatures(),this.trackView.updateViews(),this.trackView.repaintViews()}})}e.push("<hr/>"),e.push("Signal Type");let t={rd_snp:"RD and BAF Likelihood",rd:"RD Signal",snp:"BAF Likelihood"};for(let i in t){const n=Hi(t[i],i===this.signal_name);e.push({object:ft(n),click:async()=>{this.signal_name=i,await this.recreate_tracks(this.bin_size),this.clearCachedFeatures(),this.trackView.updateViews(),this.trackView.repaintViews()}})}e.push("<hr/>"),e.push("CNV caller");for(let t of this.available_callers){const i=Hi(t,t===this.cnv_caller);e.push({object:ft(i),click:async()=>{this.cnv_caller=t,await this.recreate_tracks(this.bin_size),this.clearCachedFeatures(),this.trackView.updateViews(),this.trackView.repaintViews()}})}return e}async recreate_tracks(e){this.tracks=[];const t=[];e in this.wigFeatures_obj||(this.wigFeatures_obj={...this.wigFeatures_obj,...await this.cnvpytor_obj.get_rd_signal(e)}),this.signals=this.get_signals(),this.signal_colors=this.get_signal_colors();for(const[i,n]of Object.entries(this.wigFeatures_obj[e]))if(this.signals.includes(i)){let e={type:"wig",isMergedTrack:!0};e.features=n,e.name=i,e.color=this.signal_colors.filter((e=>e.singal_name===i)).map((e=>e.color));const r=await this.browser.createTrack(e);r?(r.autoscale=!1,this.tracks.push(r)):console.warn("Could not create track "+e),"function"==typeof r.postInit&&t.push(r.postInit())}this.flipAxis=!!this.config.flipAxis&&this.config.flipAxis,this.logScale=!!this.config.logScale&&this.config.logScale,this.autoscale=this.config.autoscale,this.autoscale||(this.dataRange={min:this.config.min||0,max:this.config.max});for(let e of this.tracks)e.autoscale=!1,e.dataRange=this.dataRange;return Promise.all(t)}async getFeatures(e,t,i,n){if(this.tracks){const r=this.tracks.map((r=>r.getFeatures(e,t,i,n)));return Promise.all(r)}}getScaleFactor(e,t,i,n){return n?i/(Math.log10(t+1)-(e<=0?0:Math.log10(e+1))):i/(t-e)}computeYPixelValue(e,t){return(this.flipAxis?e-this.dataRange.min:this.dataRange.max-e)*t}computeYPixelValueInLogScale(e,t){let i=this.dataRange.max,n=this.dataRange.min;return i<=0?0:(n<=-1&&(n=0),n=n<=0?0:Math.log10(n+1),i=Math.log10(i+1),e=Math.log10(e+1),(this.flipAxis?e-n:i-e)*t)}draw(e){const t=e.features;if(!t)return;if(this.defaultScale&&("rd_snp"==this.signal_name?this.dataRange={min:this.config.min||this.dataRange.min||-2,max:this.config.max||this.dataRange.max||6}:"rd"==this.signal_name?this.dataRange={min:this.config.min||this.dataRange.min||0,max:this.config.max||this.dataRange.max||6}:"snp"==this.signal_name&&(this.dataRange={min:this.config.min||this.dataRange.min||-2,max:this.config.max||this.dataRange.max||0})),this.autoscale&&(this.dataRange=function(e,t){let i=0,n=-Number.MAX_VALUE;for(let e of t)for(let t of e)void 0===t.value||Number.isNaN(t.value)||(i=Math.min(i,t.value),n=Math.max(n,t.value));return{min:i,max:n}}(e.referenceFrame.chr,t)),this.tracks)for(let i=0,n=this.tracks.length;i<n;i++){const n=Object.assign({},e);n.features=t[i],this.tracks[i].dataRange=this.dataRange,this.tracks[i].flipAxis=this.flipAxis,this.tracks[i].logScale=this.logScale,this.graphType&&(this.tracks[i].graphType=this.graphType),this.tracks[i].draw(n)}const i=this.getScaleFactor(this.dataRange.min,this.dataRange.max,e.pixelHeight,this.logScale),n=e=>this.logScale?this.computeYPixelValueInLogScale(e,i):this.computeYPixelValue(e,i);if(this.config.hasOwnProperty("guideLines"))for(let t of this.config.guideLines)if(t.hasOwnProperty("color")&&t.hasOwnProperty("y")&&t.hasOwnProperty("dotted")){let i=n(t.y),r={strokeStyle:t.color,strokeWidth:1};t.dotted?ya.dashedLine(e.context,0,i,e.pixelWidth,i,5,r):ya.strokeLine(e.context,0,i,e.pixelWidth,i,r)}}popupData(e,t){const i=t||e.viewport.cachedFeatures;if(i&&i.length===this.tracks.length){const t=[];for(let n=0;n<this.tracks.length;n++){n>0&&t.push("<hr/>"),t.push(`<div style=background-color:rgb(245,245,245);border-bottom-style:dashed;border-bottom-width:1px;padding-bottom:5px;padding-top:10px;font-weight:bold;font-size:larger >${this.tracks[n].name}</div>`);const r=this.tracks[n].popupData(e,i[n]);t.push(...r)}return t}}}const Vb=new Map([["ideogram",(e,t)=>new np(e,t)],["sequence",(e,t)=>new pl(e,t)],["feature",(e,t)=>new Ku(e,t)],["seg",(e,t)=>new Nf(e,t)],["mut",(e,t)=>new Nf(e,t)],["maf",(e,t)=>new Nf(e,t)],["wig",(e,t)=>new Mf(e,t)],["merged",(e,t)=>new Bf(e,t)],["alignment",(e,t)=>new lf(e,t)],["interaction",(e,t)=>new Df(e,t)],["interact",(e,t)=>new Df(e,t)],["variant",(e,t)=>new Wf(e,t)],["eqtl",(e,t)=>new Zf(e,t)],["gwas",(e,t)=>new Yf(e,t)],["arc",(e,t)=>new ep(e,t)],["gcnv",(e,t)=>new Kf(e,t)],["junction",(e,t)=>new ap(e,t)],["blat",(e,t)=>new sf(e,t)],["cnvpytor",(e,t)=>new Ub(e,t)]]),qb=function(e,t){Vb.set(e,t)};var jb=qb,$b=function(e,t,i){let n;switch(e){case"annotation":case"genes":case"fusionjuncspan":case"snp":n="feature";break;case"seg":case"maf":case"mut":n="seg";break;case"junctions":case"splicejunctions":n="junction";break;default:n=e}return Vb.has(n)?Vb.get(n)(t,i):void 0};class Wb{constructor(e,t){const i=(new DOMParser).parseFromString(e,"text/xml");this.processRootNode(i,t);const n=i.getElementsByTagName("Resource"),r=i.getElementsByTagName("Track"),s=r&&r.length>0,o=[];this.tracks=o;const a=new Map;Array.from(n).forEach((function(e,t){var i={url:e.getAttribute("path"),indexURL:e.getAttribute("index"),order:t};a.set(i.url,i),s||o.push(i)})),s&&Array.from(r).forEach((function(e){const t=e.getElementsByTagName("Track");if(t&&t.length>0){const i={type:"merged",tracks:[]};Gb(e,i),o.push(i),Array.from(t).forEach((function(e){e.processed=!0;const t=e.getAttribute("id"),n=a.get(t);n&&(i.tracks.push(n),Gb(e,n),n.autoscale=!1,i.height=n.height)}))}else if(!e.processed){const t=e.getAttribute("id"),i=a.get(t);i&&(o.push(i),Gb(e,i))}}))}processRootNode(e,t){const i=e.getElementsByTagName("Session");!i||i.length;const n=i.item(0),r=n.getAttribute("genome"),s=n.getAttribute("locus"),o=n.getAttribute("ucscID");t&&t.hasOwnProperty(r)?this.genome=r:(this.reference={fastaURL:r},o&&(this.reference.id=o)),s&&(this.locus=s)}}function Gb(e,t){t.name=e.getAttribute("name");const i=e.getAttribute("color");i&&(t.color="rgb("+i+")");const n=e.getAttribute("altColor");i&&(t.altColor="rgb("+n+")");const r=e.getAttribute("height");r&&(t.height=parseInt(r));const s=e.getAttribute("autoScale");s&&(t.autoscale="true"===s);const o=e.getAttribute("autoscaleGroup");o&&(t.autoscaleGroup=o);const a=e.getAttribute("windowFunction");a&&(t.windowFunction=a);const l=e.getAttribute("visibilityWindow")||e.getAttribute("featureVisibilityWindow");l&&(t.visibilityWindow=l);const h=e.getAttribute("indexed");h&&(t.indexed="true"===h);const c=e.getAttribute("normalize");c&&(t.normalize="true"===c);const d=e.getElementsByTagName("DataRange");if(d.length>0){const e=d.item(0);t.min=Number(e.getAttribute("minimum")),t.max=Number(e.getAttribute("maximum")),t.logScale="LOG"===e.getAttribute("type")}}const Zb=Gi;class Qb{constructor(){this.attributes={},this.plinkLoaded=!1}async loadPlinkFile(e,t){t||(t={});var i=Sa(t);const n=await ta.loadString(e,i);var r=Zb(n);for(let e of r){var s=e.split(" ");this.attributes[s[1]]={familyId:s[0],fatherId:s[2],motherId:s[3],sex:s[4],phenotype:s[5]}}return this.plinkLoaded=!0,this}getAttributes(e){return this.attributes[e]}getAttributeNames(){return this.hasAttributes()?Object.keys(this.attributes[Object.keys(this.attributes)[0]]):[]}hasAttributes(){return Object.keys(this.attributes).length>0}}class Xb{constructor(e,t){this.geneColors={},this.gene=null,this.snp=null,this.genesCount=0,e&&(this.gene=e.toUpperCase(),this.geneColors[this.gene]=Yb[this.genesCount++]),t&&(this.snp=t.toUpperCase())}addGene(e){this.geneColors[e.toUpperCase()]||(this.geneColors[e.toUpperCase()]=Yb[this.genesCount++])}colorForGene(e){return this.geneColors[e.toUpperCase()]}}var Yb=[];Yb.push("rgb(228,26,28)"),Yb.push("rgb(55,126,184)"),Yb.push("rgb(77,175,74)"),Yb.push("rgb(166,86,40)"),Yb.push("rgb(152,78,163)"),Yb.push("rgb(255,127,0)"),Yb.push("rgb(247,129,191)"),Yb.push("rgb(153,153,153)"),Yb.push("rgb(255,255,51)"),Yb.push("rgb(102, 194, 165"),Yb.push("rgb(252, 141, 98"),Yb.push("rgb(141, 160, 203"),Yb.push("rgb(231, 138, 195"),Yb.push("rgb(166, 216, 84"),Yb.push("rgb(255, 217, 47"),Yb.push("rgb(229, 196, 148"),Yb.push("rgb(179, 179, 179"),Yb.push("rgb( 141, 211, 199"),Yb.push("rgb(255, 255, 179"),Yb.push("rgb(190, 186, 218"),Yb.push("rgb(251, 128, 114"),Yb.push("rgb(128, 177, 211"),Yb.push("rgb(253, 180, 98"),Yb.push("rgb(179, 222, 105"),Yb.push("rgb(252, 205, 229"),Yb.push("rgb(217, 217, 217"),Yb.push("rgb(188, 128, 189"),Yb.push("rgb(204, 235, 197"),Yb.push("rgb(255, 237, 111");class Kb{constructor(e,t,i,n,r){this.genome=e,this.chr=t,this.start=i,this.end=n,this.bpPerPixel=r,this.id=_t.guid()}extend(e){const t=Math.min(e.start,this.start),i=Math.max(e.end,this.end),n=(i-t)/(this.end-this.start);this.start=t,this.end=i,this.bpPerPixel*=n}calculateEnd(e){return this.start+this.bpPerPixel*e}calculateBPP(e,t){return(e-this.start)/t}set(e){this.chr=e.chr,this.start=e.start,this.bpPerPixel=e.bpPerPixel}toPixels(e){return e/this.bpPerPixel}toBP(e){return this.bpPerPixel*e}shiftPixels(e,t,i){const n=this.start,r=e*this.bpPerPixel;return this.start+=r,i&&this.clampStart(t),this.end=this.start+t*this.bpPerPixel,n!==this.start}clampStart(e){const t=this.genome.getChromosome(this.chr).bpStart||0;if(this.start=Math.max(t,this.start),e){const{bpLength:t}=this.genome.getChromosome(this.chr),i=t-e*this.bpPerPixel;this.start>i&&(this.start=i)}}async zoomWithScaleFactor(e,t,i,n){const r=void 0===n?this.start+this.toBP(i/2):n,{start:s,bpPerPixel:o}=this.start,{bpLength:a}=this.getChromosome(),l=t<1?e.minimumBases()/i:a/i;this.bpPerPixel=t<1?Math.max(this.bpPerPixel*t,l):Math.min(this.bpPerPixel*t,l);const h=this.bpPerPixel*i;this.start=r-.5*h,this.clampStart(i),this.end=this.start+h;(s!==this.start||o!==this.bpPerPixel)&&await e.updateViews(!0)}getChromosome(){return this.genome.getChromosome(this.chr)}getMultiLocusLabelBPLengthOnly(e){const t="&nbsp",i=Math.floor(this.start)+1,n=Math.round(this.start+this.bpPerPixel*e);return`${t}${this.chr}${t}${Ma(n-i)}${t}`}getMultiLocusLabelLocusOnly(e){const t="&nbsp",{chr:i,start:n,end:r}=this.getPresentationLocusComponents(e);return`${t}${i}:${n}-${r}${t}`}getMultiLocusLabel(e){const t="&nbsp",{chr:i,start:n,end:r}=this.getPresentationLocusComponents(e),s=Math.floor(this.start)+1;return`${t}${i}:${n}-${r}${t}${t}(${Ma(Math.round(this.start+this.bpPerPixel*e)-s)})${t}`}getPresentationLocusComponents(e){if("all"===this.chr)return{chr:this.chr};{const t=Wi(Math.floor(this.start)+1),i=Wi(Math.round(this.start+this.bpPerPixel*e));return{chr:this.chr,start:t,end:i}}}getLocusString(){if("all"===this.chr)return"all";{const e=Wi(Math.floor(this.start)+1),t=Wi(Math.round(this.end));return`${this.chr}:${e}-${t}`}}description(e){console.log(` ${e||""} referenceFrame - ${this.chr} bpp ${this.bpPerPixel.toFixed(3)} start ${Wi(Math.round(this.start))} end ${Wi(Math.round(this.end))} `)}}const Jb={timeout:5e3,type:"plain",url:"https://igv.org/genomes/locus.php?genome=$GENOME$&name=$FEATURE$",coords:0,chromosomeField:"chromosome",startField:"start",endField:"end",geneField:"gene",snpField:"snp"};async function ew(e,t){if(void 0===t||""===t.trim())return;(t&&"all"===t.trim().toLowerCase()||"*"===t)&&(t="all");const i=t.split(" ");let n=e.searchConfig||Jb,r=[];const s=async i=>{let r=function(e,t){const i=t.split("\t");if(i.length>=3)try{const t=e.genome.getChromosomeName(i[0]),n=parseInt(i[1].replace(/,/g,""),10)-1,r=parseInt(i[2].replace(/,/g,""),10);if(!isNaN(n)&&!isNaN(r))return{chr:t,start:n,end:r}}catch(e){}const n=t.split(":"),r=n[0];if("all"===r&&e.genome.getChromosome(r))return{chr:r,start:0,end:e.genome.getChromosome(r).bpLength};if(void 0===e.genome.getChromosome(r))return;{const t={chr:e.genome.getChromosomeName(r),start:0,end:e.genome.getChromosome(r).bpLength};if(n.length>1){let i,r=n[1].split("-");if(r.length>2){if(!n[1].startsWith("-"))return;{const e=n[1].indexOf("-",1);if(e>0){r=[n[1].substring(0,e),n[1].substring(e+1)]}}}if(i=r[0].replace(/,/g,""),isNaN(i))return;if(t.start=parseInt(i,10)-1,t.end=t.start+1,1===r.length&&(t.start-=20,t.end+=20),2===r.length){if(i=r[1].replace(/,/g,""),isNaN(i))return;if(t.end=parseInt(i,10),t.start<0&&!e.isSoftclipped()){const e=-t.start;t.start+=e,t.end+=e}}}return t}}(e,i);if(!r){const n=e.genome.featureDB.get(i.toUpperCase());n&&(r={chr:n.chr,start:n.start,end:n.end,gene:n.name,locusSearchString:t})}if(!r&&e.config&&!1!==e.config.search)try{r=await async function(e,t,i){let n=i.url.replace("$FEATURE$",t.toUpperCase());n.indexOf("$GENOME$")>-1&&(n=n.replace("$GENOME$",e.genome.id?e.genome.id:"hg19"));const r=i.timeout?{timeout:i.timeout}:void 0,s=await ta.loadString(n,r),o=function(e,t,i){let n;n="plain"===i.type?function(e,t){const i=[],n=[];return Gi(t).forEach((function(e){""===e||i.push(e)})),i.forEach((function(t){var i,r,s,o,a=t.split("\t");a.length>=3&&(s=(r=a[1].split(":"))[1].split("-"),i=a[2].trim(),o={gene:a[0],chromosome:e.genome.getChromosomeName(r[0].trim()),start:parseInt(s[0].replace(/,/g,"")),end:parseInt(s[1].replace(/,/g,"")),type:"gtex"===i?"snp":"gene"},n.push(o))})),n}(e,t):JSON.parse(t);i.resultsField&&(n=n[i.resultsField]);if(n&&0!==n.length){const t=i.chromosomeField||"chromosome",r=i.startField||"start",s=i.endField||"end",o=i.coords||1;let a;a=Array.isArray(n)?n[0]:n,a.hasOwnProperty(t)&&a.hasOwnProperty(r)||console.error("Search service results must include chromosome and start fields: "+a);const l=a[t],h=e.genome.getChromosome(l);if(!h)return;const c=h.name;let d=a[r]-o,u=a[s];void 0===u&&(u=d+1);const f={chr:c,start:d,end:u},p=a.type?a.type:"gene";return i.geneField&&"gene"===p&&(f.gene=a[i.geneField]),i.snpField&&"snp"===p&&(f.snp=a[i.snpField]),f}return}(e,s,i);o&&(o.locusSearchString=t);return o}(e,i,n)}catch(e){throw console.error(e),Error("Search service currently unavailable.")}return r};for(let e of i){const t=await s(e);t&&(t.locusSearchString=e,r.push(t))}if(0===r.length){const e=await s(t);e&&(e.locusSearchString=t,r.push(e))}return 0===r.length?void 0:r}class tw{constructor(e){this.browser=e}navbarDidResize(e){this.updateNavbar(this.createResponsiveClassSchedule(e))}updateNavbar(e){this.browser.$toggle_button_container.removeClass(),this.browser.$toggle_button_container.addClass(e.$toggle_button_container),ft(this.browser.zoomWidget.zoomContainer).removeClass(),ft(this.browser.zoomWidget.zoomContainer).addClass(e.zoomContainer)}createResponsiveClassSchedule(e){let t={};const i=this.browser.isMultiLocusWholeGenomeView()||this.browser.referenceFrameList&&Ml.isWholeGenomeView(this.browser.referenceFrameList[0].chr);return i?this.browser.windowSizePanel.hide():this.browser.windowSizePanel.show(),e>990?(t.$toggle_button_container="igv-navbar-toggle-button-container",t.zoomContainer="igv-zoom-widget"):e>860?(t.$toggle_button_container="igv-navbar-toggle-button-container",t.zoomContainer="igv-zoom-widget-900"):e>540?(t.$toggle_button_container="igv-navbar-toggle-button-container-750",t.zoomContainer="igv-zoom-widget-900"):(t.$toggle_button_container="igv-navbar-toggle-button-container-750",t.zoomContainer="igv-zoom-widget-900",this.browser.windowSizePanel.hide()),i&&(t.zoomContainer="igv-zoom-widget-hidden"),t}}const iw=function(e,t){this.container=_t.div({class:"igv-chromosome-select-widget-container"}),t.appendChild(this.container),this.select=document.createElement("select"),this.select.setAttribute("name","chromosome-select-widget"),this.container.appendChild(this.select),this.select.addEventListener("change",(()=>{this.select.blur(),""!==this.select.value&&e.search(this.select.value)})),this.showAllChromosomes=!1!==e.config.showAllChromosomes};iw.prototype.show=function(){this.container.style.display="flex"},iw.prototype.hide=function(){this.container.style.display="none"},iw.prototype.update=function(e){const t=this.showAllChromosomes?e.chromosomeNames.slice():e.wgChromosomeNames.slice();e.showWholeGenomeView()&&(t.unshift("all"),t.unshift("")),this.select.innerHTML="";for(let e of t){const t=document.createElement("option");t.setAttribute("value",e),t.innerText=e,this.select.appendChild(t)}};class nw{constructor(e,t){this.container=_t.div({class:"igv-windowsize-panel-container"}),e.appendChild(this.container),t.on("locuschange",(e=>{this.updatePanel(e)})),this.browser=t}show(){this.container.style.display="block"}hide(){this.container.style.display="none"}updatePanel(e){const t=this.browser.calculateViewportWidth(this.browser.referenceFrameList.length);this.container.innerText=1===e.length?Ma(Math.round(t*e[0].bpPerPixel)):""}}class rw{constructor(e,t){this.browser=t,this.columnContainer=e,this.horizontalGuide=_t.div({class:"igv-cursor-guide-horizontal"}),e.appendChild(this.horizontalGuide),this.verticalGuide=_t.div({class:"igv-cursor-guide-vertical"}),e.appendChild(this.verticalGuide),this.addMouseHandler(t),this.setVisibility(t.config.showCursorGuide)}addMouseHandler(e){this.boundMouseMoveHandler=function(t){const{x:i,y:n}=_t.translateMouseCoordinates(t,this.columnContainer);this.horizontalGuide.style.top=`${n}px`;const r=function(e,t){for(;e.parentElement;){if(e.parentElement.classList.contains(t))return e.parentElement;e=e.parentElement}return}(document.elementFromPoint(t.clientX,t.clientY),"igv-viewport");if(r&&e.getRulerTrackView()){this.verticalGuide.style.left=`${i}px`;const n=e.root.querySelectorAll(".igv-column");let s;const o=r.parentElement;for(let e=0;e<n.length;e++)void 0===s&&o===n[e]&&(s=e);const a=e.getRulerTrackView().viewports[s].mouseMove(t);if(a){const{start:e,bp:t,end:i}=a,n=(t-e)/(i-e);this.customMouseHandler&&this.customMouseHandler({start:e,bp:t,end:i,interpolant:n})}}}.bind(this),this.columnContainer.addEventListener("mousemove",this.boundMouseMoveHandler)}removeMouseHandler(){this.columnContainer.removeEventListener("mousemove",this.boundMouseMoveHandler)}setVisibility(e){!0===e?this.show():this.hide()}show(){this.verticalGuide.style.display="block",this.horizontalGuide.style.display="block"}hide(){if(this.verticalGuide.style.display="none",this.horizontalGuide.style.display="none",this.browser.getRulerTrackView())for(let e of this.browser.getRulerTrackView().viewports)e.$tooltip.hide()}}class sw{constructor(e,t){this.browser=e,this.button=_t.div({class:"igv-navbar-button"}),t.appendChild(this.button),this.button.textContent="cursor guide",this.button.addEventListener("click",(()=>{e.cursorGuideVisible=!e.cursorGuideVisible,e.setCursorGuideVisibility(e.cursorGuideVisible),this.setButtonState(e.cursorGuideVisible)})),this.setButtonState(e.cursorGuideVisible),e.config.showCursorTrackingGuideButton?this.show():this.hide()}setButtonState(e){!0===e?this.button.classList.add("igv-navbar-button-clicked"):this.button.classList.remove("igv-navbar-button-clicked")}show(){this.button.style.display="block",this.setButtonState(this.browser.cursorGuideVisible)}hide(){this.button.style.display="none"}}class ow{constructor(e,t){this.browser=e,this.button=_t.div({class:"igv-navbar-button"}),t.appendChild(this.button),this.button.textContent="center line",this.button.addEventListener("click",(()=>{e.isCenterLineVisible=!e.isCenterLineVisible,e.setCenterLineVisibility(e.isCenterLineVisible),this.setButtonState(e.isCenterLineVisible)})),this.setButtonState(e.isCenterLineVisible),e.config.showCenterGuideButton?this.show():this.hide()}setButtonState(e){!0===e?this.button.classList.add("igv-navbar-button-clicked"):this.button.classList.remove("igv-navbar-button-clicked")}show(){this.isVisible=!0,this.button.style.display="block",this.setButtonState(this.browser.isCenterLineVisible)}hide(){this.isVisible=!1,this.button.style.display="none"}}class aw{constructor(e,t){this.button=_t.div({class:"igv-navbar-button"}),e.appendChild(this.button),this.button.textContent="track labels",this.button.addEventListener("click",(()=>{t.trackLabelsVisible=!t.trackLabelsVisible,this.setState(t.trackLabelsVisible),t.setTrackLabelVisibility(t.trackLabelsVisible)})),this.browser=t,this.setVisibility(t.config.showTrackLabelButton),this.setState(t.trackLabelsVisible)}setVisibility(e){!0===e?this.show():this.hide()}setState(e){!0===e?this.button.classList.add("igv-navbar-button-clicked"):this.button.classList.remove("igv-navbar-button-clicked")}show(){this.button.style.display="block",this.setState(this.browser.trackLabelsVisible)}hide(){this.button.style.display="none"}}class lw{constructor(e,t){this.button=_t.div({class:"igv-navbar-button"}),e.appendChild(this.button),this.button.innerText="Sample Names",this.setState(t.showSampleNames),this.setVisibility(t.showSampleNameButton),this.button.addEventListener("click",(()=>{t.showSampleNames=!t.showSampleNames,this.setState(t.showSampleNames);for(let{sampleNameViewport:e}of t.trackViews)!1===t.showSampleNames?e.hide():e.show();t.layoutChange()}))}setVisibility(e){!0===e?this.show():this.hide()}setState(e){!0===e?this.button.classList.add("igv-navbar-button-clicked"):this.button.classList.remove("igv-navbar-button-clicked")}hide(){this.button.style.display="none"}show(){this.button.style.display="block"}}let hw=23,cw=0;const dw=function(e,t){this.browser=e,this.zoomContainer=_t.div({class:"igv-zoom-widget"}),t.appendChild(this.zoomContainer),this.zoomOutButton=_t.div(),this.zoomContainer.appendChild(this.zoomOutButton),this.zoomOutButton.appendChild(_i.createIcon("minus-circle")),this.zoomOutButton.addEventListener("click",(()=>{e.zoomOut()}));const i=_t.div();this.zoomContainer.appendChild(i),this.slider=document.createElement("input"),this.slider.type="range",this.slider.min="0",this.slider.max=`${hw}`,i.appendChild(this.slider),this.slider.addEventListener("change",(t=>{t.preventDefault(),t.stopPropagation();const i=e.referenceFrameList[0],{bpLength:n}=i.genome.getChromosome(i.chr),{end:r,start:s}=i,o=r-s,a=n/Math.pow(2,t.target.valueAsNumber);e.zoomWithScaleFactor(a/o)})),this.zoomInButton=_t.div(),this.zoomContainer.appendChild(this.zoomInButton),this.zoomInButton.appendChild(_i.createIcon("plus-circle")),this.zoomInButton.addEventListener("click",(()=>{e.zoomIn()})),e.on("locuschange",(e=>{this.browser.isMultiLocusMode()?this.disable():(this.enable(),this.update(e))}))};dw.prototype.update=function(e){const t=e[0],{bpLength:i}=t.genome.getChromosome(t.chr),{start:n,end:r}=t;hw=Math.ceil(Math.log2(i/this.browser.minimumBases())),this.slider.max=`${hw}`;const s=i/(r-n);cw=Math.log2(s),this.slider.value=`${Math.round(cw)}`},dw.prototype.enable=function(){this.slider.disabled=!1},dw.prototype.disable=function(){this.slider.disabled=!0},dw.prototype.hide=function(){this.zoomContainer.style.display="none"},dw.prototype.show=function(){this.zoomContainer.style.display="block"},dw.prototype.hideSlider=function(){this.slider.style.display="none"},dw.prototype.showSlider=function(){this.slider.style.display="block"};const uw=function(e,t){const i=_t.div({class:"igv-navbar-button"});e.append(i),i.textContent="Save SVG",i.addEventListener("click",(()=>t.saveSVGtoFile({})))},fw=(e,t)=>{const i=0===e?t.nextElementSibling:t.previousElementSibling;t.remove(),i.remove()},pw=e=>{const t=_t.div({class:"igv-column-shim"});Na(t,e);const i=_t.div({class:"igv-column"});return Na(i,t),i},gw=(e,t)=>{for(let i=0;i<t;i++){const n=_t.div({class:"igv-column"});if(Ia(n,e),t>1&&i>0){Ia(_t.div({class:"igv-column-shim"}),n)}}};class mw{constructor(e,t,i){this.browser=e,this.referenceFrame=t,this.column=i,this.container=_t.div({class:"igv-center-line"}),i.appendChild(this.container),e.isCenterLineVisible?this.show():this.hide()}repaint(){if(this.referenceFrame){if(1/this.referenceFrame.bpPerPixel>1){const e=Math.floor(this.referenceFrame.toPixels(1));this.container.style.width=`${e}px`,this.container.classList.remove("igv-center-line-thin"),this.container.classList.add("igv-center-line-wide")}else this.container.style.width="1px",this.container.classList.remove("igv-center-line-wide"),this.container.classList.add("igv-center-line-thin")}}show(){this.isVisible=!0,this.container.style.display="block",this.repaint()}hide(){this.isVisible=!1,this.container.style.display="none"}resize(){this.repaint()}}const bw=Wi;class ww{constructor(e){this.browser=e,this.height=40,this.name="",this.id="ruler",this.disableButtons=!0,this.ignoreTrackMenu=!0,this.order=.01*Number.MIN_SAFE_INTEGER,this.removable=!1,this.type="ruler"}async getFeatures(e,t,i){return[]}computePixelHeight(e){return this.height}draw({context:e,referenceFrame:t,pixelWidth:i,pixelHeight:n,bpPerPixel:r,bpStart:s}){Ml.isWholeGenomeView(t.chr)?this.drawWholeGenome({context:e,pixelWidth:i,pixelHeight:n,bpPerPixel:r}):this.doDraw({context:e,referenceFrame:t,pixelWidth:i,pixelHeight:n,bpStart:s})}drawWholeGenome({context:e,pixelWidth:t,pixelHeight:i,bpPerPixel:n}){e.save(),ya.fillRect(e,0,0,t,i,{fillStyle:"white"});for(let t of this.browser.genome.wgChromosomeNames){let r=this.browser.genome.getCumulativeOffset(t),s=this.browser.genome.getChromosome(t).bpLength,o=Math.round(r/n),a=Math.round(s/n);this.renderChromosomeRect(e,o,0,a,i,t)}e.restore()}doDraw({context:e,referenceFrame:t,pixelWidth:i,pixelHeight:n,bpStart:r}){e.clearRect(0,0,i,n);const s=function(e,t){if(e<10)return new vw(1,"bp",1);const i=Math.floor(Math.log10(e));let n="bp",r=1;i>9?(n="gb",r=1e9):i>6?(n="mb",r=1e6):i>3&&(n="kb",r=1e3);const s=Math.pow(10,i-1),o=e/s,a=75,l=Math.pow(10,i-1),h=Math.pow(10,i)/2;return new vw(o<a&&!0!==t?l:h,n,r)}(Math.floor(t.toBP(i)),e.isSVG);let o=Math.floor(r/s.majorTick)-1;const{tickDelta:a,labelLength:l}=function(e,t,i,n,r){const s=h(t,l(1+n,r),i)-h(t,l(n,r),i),o=`${Wi(Math.floor(l(n,r)/r.unitMultiplier))} ${r.majorUnit}`,a=Math.floor(e.measureText(o).width);return{tickDelta:s,labelLength:a};function l(e,t){return Math.floor(e*t.majorTick)}function h(e,t,i){return Math.round(e.toPixels(t-1-i+.5))}}(e,t,r,o,s);let h,c;this.browser.referenceFrameList.indexOf(t);let d=a;const u=.25*l;do{c=Math.floor(o*s.majorTick);const i=`${Wi(Math.floor(c/s.unitMultiplier))} ${s.majorUnit}`;h=Math.round(t.toPixels(c-1-r+.5));const n=Math.round(h-e.measureText(i).width/2);n>0&&u+l<=d&&(ya.fillText(e,i,n,this.height-8),d=0),h>0&&ya.strokeLine(e,h,this.height-6,h,this.height-2),c=Math.floor((1+o)*s.majorTick);let f=h+(Math.round(t.toPixels(c-1-r+.5))-h)/2;f>0&&ya.strokeLine(e,f,this.height-6,f,this.height-2),++o,d+=a}while(h<i);ya.strokeLine(e,0,this.height-2,i,this.height-2)}renderChromosomeRect(e,t,i,n,r,s){e.textAlign="center",e.textBaseline="middle",e.font="12px sans-serif",ya.strokeLine(e,t+n,i,t+n,i+r,{strokeStyle:Do.greyScale(191)});const o=s.startsWith("chr")?s.substring(3):s;n>e.measureText(o).width&&ya.fillText(e,o,t+n/2,i+r/2,{fillStyle:Do.greyScale(68)})}get supportsWholeGenome(){return!0}dispose(){}}class vw{constructor(e,t,i){this.majorTick=e,this.minorTick=e/10,this.majorUnit=t,this.unitMultiplier=i}description(e){console.log((e||"")+" tick "+bw(this.majorTick)+" label width "+bw(this.labelWidthBP)+" multiplier "+this.unitMultiplier)}}const yw=function(e,t){this.button=_t.div({class:"igv-navbar-button"}),e.appendChild(this.button),this.button.textContent="circular view",this.button.addEventListener("click",(()=>{t.circularViewVisible=!t.circularViewVisible})),this.browser=t,this.setVisibility(t.config.showCircularViewButton),this.setState(t.circularViewVisible)};yw.prototype.setVisibility=function(e){!0===e?this.show():this.hide()},yw.prototype.setState=function(e){!0===e?this.button.classList.add("igv-navbar-button-clicked"):this.button.classList.remove("igv-navbar-button-clicked")},yw.prototype.show=function(){this.button.style.display="block",this.setState(this.browser.circularViewVisible)},yw.prototype.hide=function(){this.button.style.display="none"};const _w=function(e,t,i){const n=_t.div({class:"igv-navbar-button"});e.append(n),n.textContent=i.label,n.addEventListener("click",(()=>i.callback(t)))};class xw{constructor(e,t,i,n,r){this.browser=e,this.roiMenu=t,this.roiTable=i,this.top=n,this.roiSets=r||[],this.boundLocusChangeHandler=kw.bind(this),e.on("locuschange",this.boundLocusChangeHandler)}async initialize(){this.roiSets.length>0&&(this.browser.showROITableButton=!0,this.browser.roiTableControl.setVisibility(this.browser.showROITableButton));const e=this.roiSets.map((e=>this.renderROISet({browser:this.browser,pixelTop:this.top,roiSet:e})));e.length>0&&await Promise.all(e);const t=await this.getTableRecords();this.roiTable.renderTable(t)}async loadROI(e,t){const i=Array.isArray(e)?e:[e];for(let e of i)this.roiSets.push(new dd(e,t));await this.initialize()}clearROIs(){this.roiTable.clearTable();const e=this.browser.columnContainer.querySelectorAll(".igv-roi-region");for(let t of e)t.remove();for(let e of this.roiSets)e.dispose();this.roiSets=[]}async getTableRecords(){const e=[];for(let t of this.roiSets){const i=t.isUserDefined?"":t.name||"",n=await t.getAllFeatures();for(let t of Object.keys(n))for(let r of n[t])e.push({setName:i,feature:r})}return e}presentTable(){this.roiTable.present()}async repaintTable(){const e=await this.getTableRecords();this.roiTable.renderTable(e)}dismissTable(){this.roiTable.dismiss()}async updateUserDefinedROISet(e){let t=await this.getUserDefinedROISet();void 0===t&&(t=this.initializeUserDefinedROISet()),t.addFeature(e),!1===this.browser.showROITableButton&&this.setROITableButtonVisibility(!0),await this.renderROISet({browser:this.browser,pixelTop:this.top,roiSet:t});const i=await this.getTableRecords();this.roiTable.renderTable(i)}setROITableButtonVisibility(e){this.browser.showROITableButton=e,this.browser.roiTableControl.setVisibility(this.browser.showROITableButton)}async renderAllROISets(){for(let e of this.roiSets)await this.renderROISet({browser:this.browser,pixelTop:this.top,roiSet:e})}async renderROISet({browser:e,pixelTop:t,roiSet:i}){const n=e.columnContainer.querySelectorAll(".igv-column");for(let r=0;r<n.length;r++){let{chr:s,start:o,end:a,bpPerPixel:l}=e.referenceFrameList[r];const h=n[r].querySelectorAll(".igv-roi-region");for(let e of h){const t=e.dataset.region,{chr:i,start:n,end:r}=Aw(t);(i!==s||r<o||n>a)&&e.remove()}const c=await i.getFeatures(s,o,a);if(c)for(let h of c){const c=Cw(s,h.start,h.end),{x:d,width:u}=ud(Math.max(o,h.start),Math.min(a,h.end),o,l),f=n[r].querySelector(Sw(c));if(f)f.style.left=`${d}px`,f.style.width=`${u}px`;else{const s=this.createRegionElement(e.columnContainer,t,d,u,i,c,h.name);n[r].appendChild(s)}}}}createRegionElement(e,t,i,n,r,s,o){const a=_t.div({class:"igv-roi-region"});a.style.top=`${t}px`,a.style.left=`${i}px`,a.style.width=`${n}px`,a.style.backgroundColor=r.color,a.dataset.region=s;const l=_t.div();return a.appendChild(l),l.style.backgroundColor=r.headerColor,!0===r.isUserDefined?l.addEventListener("click",(t=>{t.preventDefault(),t.stopPropagation();const{x:i,y:n}=_t.translateMouseCoordinates(t,e);this.roiMenu.present(i,n,this,e,a)})):o?l.addEventListener("click",(t=>{t.preventDefault(),t.stopPropagation(),this.popover&&this.popover.dispose(),this.popover=new Oi(e,r.name),this.popover.presentContentWithEvent(t,o)})):l.style.pointerEvents="none",a}renderSVGContext(e,{deltaX:t,deltaY:i}){for(const n of document.querySelectorAll(".igv-roi-region")){const{x:r,y:s,width:o,height:a}=n.getBoundingClientRect();e.fillStyle=n.style.backgroundColor,e.fillRect(r+t,s+i,o,a);const l=n.querySelector("div"),{x:h,y:c,width:d,height:u}=l.getBoundingClientRect();e.fillStyle=l.style.backgroundColor,e.fillRect(h+t,c+i,d,u)}}async getUserDefinedROISet(){return this.roiSets.find((e=>!0===e.isUserDefined))}initializeUserDefinedROISet(){const e=new dd({isUserDefined:!0,features:[]},this.browser.genome);return this.roiSets.push(e),e}async deleteUserDefinedRegionWithKey(e,t){t.querySelectorAll(Sw(e)).forEach((e=>e.remove()));const i=await this.findUserDefinedRegionWithKey(e),n=await this.getUserDefinedROISet();n&&n.removeFeature(i);0===(await this.getTableRecords()).length&&(this.browser.roiTableControl.buttonHandler(!1),this.setROITableButtonVisibility(!1))}async findUserDefinedRegionWithKey(e){const{chr:t,start:i,end:n}=Aw(e),r=await this.getUserDefinedROISet();if(r){const e=await r.getFeatures(t,i,n);for(let r of e)if(r.chr===t&&r.start>=i&&r.end<=n)return r}}toJSON(){return this.roiSets.map((e=>e.toJSON()))}dispose(){this.browser.off("locuschange",this.boundLocusChangeHandler);const e=this.browser.columnContainer.querySelectorAll(".igv-roi-region");for(let t of e)t.remove();this.roiMenu&&this.roiMenu.dispose(),this.roiTable&&this.roiTable.dispose();for(let e of this.roiSets)e.dispose();for(let e of Object.keys(this))this[e]=void 0}}function kw(){this.renderAllROISets()}function Cw(e,t,i){return`${e}-${t}-${i}`}function Sw(e){return`[data-region="${e}"]`}function Aw(e){let[t,i,n]=e.split("-");return i=parseInt(i),n=parseInt(n),{chr:t,start:i,end:n,locus:`${t}:${i}-${n}`,bedRecord:`${t}\t${i}\t${n}`}}class Ew extends Ju{constructor(e){super(Object.assign({width:"512px"},e))}tableRowDOM(e){const t=_t.div({class:"igv-roi-table-row"}),{setName:i,feature:n}=e;t.dataset.region=Cw(n.chr,n.start,n.end);let r=[n.chr,Wi(n.start),Wi(n.end),n.name||"",i];4===this.columnFormat.length&&(r=r.slice(0,4));for(let e=0;e<r.length;e++){const i=_t.div();t.appendChild(i),i.style.width=this.columnFormat[e].width,i.innerText=r[e]}return this.tableRowDOMHelper(t),t}renderTable(e){if(Array.from(this.tableRowContainer.querySelectorAll(".igv-roi-table-row")).forEach((e=>e.remove())),e.length>0){const t=e.sort(((e,t)=>e.feature.chr.localeCompare(t.feature.chr)||e.feature.start-t.feature.start||e.feature.end-t.feature.end));for(let e of t){const t=this.tableRowDOM(e);this.tableRowContainer.appendChild(t)}}}dispose(){document.removeEventListener("click",this.boundGotoButtonHandler),this.browser.roiTableControl.buttonHandler(!1),super.dispose()}static getColumnFormatConfiguration(e){return!0===e?[{label:"Chr",width:"20%"},{label:"Start",width:"15%"},{label:"End",width:"15%"},{label:"Description",width:"30%"},{label:"ROI Set",width:"20%"}]:[{label:"Chr",width:"25%"},{label:"Start",width:"20%"},{label:"End",width:"20%"},{label:"Description",width:"35%"}]}static gotoButtonHandler(e){e.stopPropagation();const t=this.tableDOM.querySelectorAll(".igv-roi-table-row-selected"),i=[];for(let e of t){const{locus:t}=Aw(e.dataset.region);i.push(t)}for(let e of this.tableDOM.querySelectorAll(".igv-roi-table-row"))e.classList.remove("igv-roi-table-row-selected");this.setTableRowSelectionState(!1),i.length>0&&this.browser.search(i.join(" "))}}class Tw{constructor(e,t){this.browser=e,this.container=_t.div({class:"igv-roi-menu-next-gen"}),t.appendChild(this.container);const i=_t.div();this.container.appendChild(i),ki.attachDialogCloseHandlerWithParent(i,(()=>this.container.style.display="none")),this.body=_t.div(),this.container.appendChild(this.body),this.container.style.display="none"}async present(e,t,i,n,r){Mw(this.body);const s=await this.browser.roiManager.findUserDefinedRegionWithKey(r.dataset.region),o=_t.div();this.body.appendChild(o);const a="Description",l=s.name||a;o.innerText=l,o.setAttribute("title",l),a===l?o.classList.add("igv-roi-placeholder"):o.classList.remove("igv-roi-placeholder");const h=_t.div();this.body.appendChild(h),h.innerText="Set Description",h.addEventListener("click",(e=>{e.stopPropagation(),this.container.style.display="none";const t={label:"Description",value:s.name||"",callback:()=>{const e=this.browser.inputDialog.value||"";s.name=e.trim(),this.container.style.display="none",this.browser.roiManager.repaintTable()}};this.browser.inputDialog.present(t,e)}));const c=_t.div();this.body.appendChild(c),c.innerText="Delete Region",c.addEventListener("click",(e=>{e.stopPropagation(),this.container.style.display="none",this.browser.roiManager.deleteUserDefinedRegionWithKey(r.dataset.region,this.browser.columnContainer)})),this.container.style.left=`${e}px`,this.container.style.top=`${t}px`,this.container.style.display="flex"}async __present(e,t,i,n,r){Mw(this.container);const s=await this.browser.roiManager.findUserDefinedRegionWithKey(r.dataset.region);let o;o=_t.div({class:"igv-roi-menu-row-edit-description"}),this.container.appendChild(o),o.addEventListener("click",(e=>{e.stopPropagation()}));const a="description-input",l=document.createElement("label");o.appendChild(l),l.setAttribute("for",a),l.innerText="Description:";const h=document.createElement("input");o.appendChild(h),h.setAttribute("type","text"),h.setAttribute("name",a),h.setAttribute("placeholder",""),h.value=s.name||"",h.addEventListener("change",(async e=>{e.stopPropagation();(await this.browser.roiManager.findUserDefinedRegionWithKey(r.dataset.region)).name=h.value,h.blur(),this.container.style.display="none",await this.browser.roiManager.repaintTable()})),o=_t.div({class:"igv-roi-menu-row"}),o.innerText="Delete region",this.container.appendChild(o),o.addEventListener("click",(e=>{e.stopPropagation(),this.container.style.display="none",this.browser.roiManager.deleteUserDefinedRegionWithKey(r.dataset.region,this.browser.columnContainer)})),this.container.style.left=`${e}px`,this.container.style.top=`${t}px`,this.container.style.display="flex",n.addEventListener("click",(e=>{e.stopPropagation(),this.container.style.display="none"}))}dispose(){this.container.innerHTML=""}}function Mw(e){for(;e.firstChild;)e.removeChild(e.firstChild)}class Rw{constructor(e,t){this.name=e.name,this.featureSource=e.featureSource||ld(e,t),this.color=e.color||hd}async getFeatures(e,t,i){return this.featureSource.getFeatures({chr:e,start:t,end:i})}draw(e){const{context:t,bpPerPixel:i,bpStart:n,pixelTop:r,pixelHeight:s,pixelWidth:o,features:a}=e;if(!a)return;const l=n+o*i+1;for(let{start:e,end:o}of a){if(o<n)continue;if(e>l)break;const{x:a,width:h}=ud(e,o,n,i);ya.fillRect(t,a,r,h,s,{fillStyle:this.color})}}}class Lw{constructor(e,t){this.browser=t,this.button=_t.div({class:"igv-navbar-button"}),e.appendChild(this.button),this.button.textContent="ROI Table",this.button.addEventListener("click",(()=>{this.buttonHandler(!t.roiTableVisible)})),this.browser=t,this.setVisibility(t.showROITableButton),this.setState(t.roiTableVisible)}buttonHandler(e){this.browser.roiTableVisible=e,this.setState(this.browser.roiTableVisible),this.browser.setROITableVisibility(this.browser.roiTableVisible)}setVisibility(e){!0===e?this.show():this.hide()}setState(e){!0===e?this.button.classList.add("igv-navbar-button-clicked"):this.button.classList.remove("igv-navbar-button-clicked")}show(){this.button.style.display="block",this.setState(this.browser.roiTableVisible)}hide(){this.button.style.display="none"}}class Iw{constructor(e,t){this.config=e,this.guid=_t.guid(),this.namespace=".browser_"+this.guid,this.parent=t,this.root=_t.div({class:"igv-container"}),t.appendChild(this.root),this.alert=new xa(this.root),this.columnContainer=_t.div({class:"igv-column-container"}),this.root.appendChild(this.columnContainer),this.menuPopup=new kf(this.columnContainer),this.initialize(e),this.trackViews=[],this.constants={dragThreshold:3,scrollThreshold:5,defaultColor:"rgb(0,0,150)",doubleClickDelay:e.doubleClickDelay||500},this.eventHandlers={},this.addMouseHandlers(),this.setControls(e)}initialize(e){e.gtex&&(Vu.gtexLoaded=!0),this.flanking=e.flanking,this.crossDomainProxy=e.crossDomainProxy,this.formats=e.formats,this.trackDefaults=e.trackDefaults,this.nucleotideColors=e.nucleotideColors||al;for(let e of Object.keys(this.nucleotideColors))this.nucleotideColors[e.toLowerCase()]=this.nucleotideColors[e];this.trackLabelsVisible=e.showTrackLabels,this.roiTableVisible=e.showROITable,this.showROITableButton=e.showROITableButton,this.isCenterLineVisible=e.showCenterGuide,this.cursorGuideVisible=e.showCursorGuide,this.showSampleNames=e.showSampleNames,this.showSampleNameButton=e.showSampleNameButton,this.sampleNameViewportWidth=e.sampleNameViewportWidth||200,e.search&&(this.searchConfig={type:"json",url:e.search.url,coords:void 0===e.search.coords?1:e.search.coords,chromosomeField:e.search.chromosomeField||"chromosome",startField:e.search.startField||"start",endField:e.search.endField||"end",geneField:e.search.geneField||"gene",snpField:e.search.snpField||"snp",resultsField:e.search.resultsField})}setControls(e){const t=this.createStandardControls(e);t.insertBefore(ft(this.columnContainer)),this.$navigation=t,!1===e.showControls&&t.hide()}createStandardControls(e){this.navbarManager=new tw(this);const t=ft("<div>",{class:"igv-navbar"});this.$navigation=t;const i=ft("<div>",{class:"igv-navbar-left-container"});t.append(i);const n=ft("<div>",{class:"igv-logo"});i.append(n);const r=ft('<svg width="690px" height="324px" viewBox="0 0 690 324" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><title>IGV</title><g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd"><g id="IGV" fill="#666666"><polygon id="Path" points="379.54574 8.00169252 455.581247 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</svg>');r.css("width","34px"),r.css("height","32px"),n.append(r),this.$current_genome=ft("<div>",{class:"igv-current-genome"}),i.append(this.$current_genome),this.$current_genome.text("");const s=ft("<div>",{class:"igv-navbar-genomic-location"});i.append(s),this.chromosomeSelectWidget=new iw(this,s.get(0)),void 0===e.showChromosomeWidget&&(e.showChromosomeWidget=!0),!0===e.showChromosomeWidget?this.chromosomeSelectWidget.show():this.chromosomeSelectWidget.hide();const o=ft("<div>",{class:"igv-locus-size-group"});s.append(o);const a=ft("<div>",{class:"igv-search-container"});o.append(a),this.$searchInput=ft("<input>",{class:"igv-search-input",type:"text",placeholder:"Locus Search"}),a.append(this.$searchInput),this.$searchInput.change((()=>this.doSearch(this.$searchInput.val())));const l=_t.div({class:"igv-search-icon-container"});a.append(ft(l)),l.appendChild(_i.createIcon("search")),l.addEventListener("click",(()=>this.doSearch(this.$searchInput.val()))),this.windowSizePanel=new nw(o.get(0),this);const h=ft("<div>",{class:"igv-navbar-right-container"});t.append(h);const c=ft('<div class="igv-navbar-toggle-button-container">');if(h.append(c),this.$toggle_button_container=c,this.cursorGuide=new rw(this.columnContainer,this),this.cursorGuideButton=new sw(this,c.get(0)),this.centerLineButton=new ow(this,c.get(0)),this.setTrackLabelVisibility(e.showTrackLabels),this.trackLabelControl=new aw(c.get(0),this),this.roiTableControl=new Lw(c.get(0),this),this.sampleNameControl=new lw(c.get(0),this),!0===e.showSVGButton&&(this.svgSaveControl=new uw(c.get(0),this)),e.customButtons)for(let t of e.customButtons)new _w(c.get(0),this,t);return this.zoomWidget=new dw(this,h.get(0)),!1===e.showNavigation&&this.$navigation.hide(),this.inputDialog=new Ri(this.root),this.inputDialog.container.id=`igv-input-dialog-${_t.guid()}`,this.dataRangeDialog=new ji(this,ft(this.root)),this.dataRangeDialog.$container.get(0).id=`igv-data-range-dialog-${_t.guid()}`,this.genericColorPicker=new Pi({parent:this.columnContainer,width:432}),this.genericColorPicker.container.id=`igv-track-color-picker-${_t.guid()}`,t}getSampleNameViewportWidth(){return!1===this.showSampleNames?0:this.sampleNameViewportWidth}isMultiLocusMode(){return this.referenceFrameList&&this.referenceFrameList.length>1}addTrackToFactory(e,t){jb(e,t)}isMultiLocusWholeGenomeView(){if(void 0===this.referenceFrameList||1===this.referenceFrameList.length)return!1;for(let e of this.referenceFrameList)if("all"===e.chr.toLowerCase())return!0;return!1}currentLoci(){const e=e=>`${e.chr}:${e.start+1}-${e.end}`;return void 0===this.referenceFrameList||0===this.referenceFrameList.length?"":1===this.referenceFrameList.length?e(this.referenceFrameList[0]):this.referenceFrameList.map((t=>e(t)))}toSVG(){const{y:e,width:t,height:i}=this.columnContainer.getBoundingClientRect(),n=new Sl({width:t,height:8e3,backdropColor:"white",multiLocusGap:0,viewbox:{x:0,y:0,width:t,height:8e3}}),r={deltaX:0,deltaY:-e};for(let e of this.trackViews)e.renderSVGContext(n,r);return this.roiManager.renderSVGContext(n,r),n.setHeight(i),n.getSerializedSvg(!0)}renderSVG(e){const t=this.toSVG();return e.empty(),e.append(t),t}saveSVGtoFile(e){let t=this.toSVG();e.$container&&(e.$container.empty(),e.$container.append(t));Ki(e.filename||"igvjs.svg",URL.createObjectURL(new Blob([t],{type:"application/octet-stream"})))}async loadSession(e){let t;return this.roiSets=[],t=e.url||e.file?await async function(e){const t=e.url||e.file;if(e.url&&(e.url.startsWith("blob:")||e.url.startsWith("data:"))){const t=Iw.uncompressSession(e.url);return JSON.parse(t)}{let i=e.filename;if(i||(i=e.url?await Ta(e.url):e.file.name),i.endsWith(".xml")){const e=Ml.KNOWN_GENOMES,i=await ta.loadString(t);return new Wb(i,e)}return i.endsWith(".json")?ta.loadJson(t):void 0}}(e):e,this.loadSessionObject(t)}async loadSessionObject(e){this.cleanHouseForSession(),this.showSampleNames=e.showSampleNames||!1,this.sampleNameControl.setState(!0===this.showSampleNames),e.sampleNameViewportWidth&&(this.sampleNameViewportWidth=e.sampleNameViewportWidth),La(this.columnContainer,"igv-axis-column"),La(this.columnContainer,"igv-sample-name-column"),La(this.columnContainer,"igv-scrollbar-column"),La(this.columnContainer,"igv-track-drag-column"),La(this.columnContainer,"igv-gear-menu-column");const t=e.reference||e.genome;if(!t)return void console.warn("No genome or reference object specified");const i=await Ml.expandReference(this.alert,t);await this.loadReference(i,e.locus),this.centerLineList=this.createCenterLineList(this.columnContainer);let n=0;if(!1!==e.showIdeogram){const e=new np(this);e.id="ideogram";const t=new Ef(this,this.columnContainer,e),{$viewport:i}=t.viewports[0];n=function(e){e="string"==typeof e?document.querySelector(e):e;const t=window.getComputedStyle(e),i=parseFloat(t.marginTop)+parseFloat(t.marginBottom),n=e.offsetHeight;return Math.ceil(i+n)}(i.get(0)),this.trackViews.push(t)}if(!1!==e.showRuler&&this.trackViews.push(new Ef(this,this.columnContainer,new ww(this))),e.gtexSelections)for(let t of this.referenceFrameList)for(let i of Object.keys(e.gtexSelections)){const n=e.gtexSelections[i].gene,r=e.gtexSelections[i].snp;t.selection=new Xb(n,r)}this.roiManager&&this.roiManager.dispose();const r=new Tw(this,this.columnContainer),s={browser:this,parent:this.columnContainer,headerTitle:"Regions of Interest",dismissHandler:()=>this.roiTableControl.buttonHandler(!1),gotoButtonHandler:Ew.gotoButtonHandler};if(e.roi){const t=e.roi.map((e=>new dd(e,this.genome))),i=t.filter((({name:e})=>void 0!==e&&e.length>0));s.columnFormat=Ew.getColumnFormatConfiguration(i.length>0);const o=new Ew(s);this.roiManager=new xw(this,r,o,n,t)}else{s.columnFormat=Ew.getColumnFormatConfiguration(!1);const e=new Ew(s);this.roiManager=new xw(this,r,e,n,void 0)}await this.roiManager.initialize();const o=i.tracks||[],a=e.tracks?o.concat(e.tracks):o;0===a.filter((e=>"sequence"===e.type&&!e.url&&!e.fastaURL)).length&&a.push({type:"sequence",order:ll});let l=1;for(let e of a)void 0===e.order&&(e.order=l++);await this.loadTrackList(a);for(let e of this.trackViews.filter((e=>"ruler"===e.track.type||"ideogram"===e.track.type)))e.updateViews();this.updateUIWithReferenceFrameList()}createCenterLineList(e){const t=e.querySelectorAll(".igv-center-line");for(let e=0;e<t.length;e++)t[e].remove();const i=[],n=e.querySelectorAll(".igv-column");for(let e=0;e<n.length;e++)i.push(new mw(this,this.referenceFrameList[e],n[e]));return i}async loadReference(e,t){const i=await Ml.loadGenome(e),n=void 0===this.genome||this.genome.id!==i.id;this.genome=i,this.updateNavbarDOMWithGenome(i),n&&this.removeAllTracks();let r=function(e,t){return e?Array.isArray(e)?e.join(" "):e:t.getHomeChromosomeName()}(t,i);if(!await this.search(r,!0)){console.log("Initial locus not found: "+r),r=i.getHomeChromosomeName();if(!await this.search(r,!0))throw new Error("Cannot set initial locus")}n&&this.circularView&&this.circularView.setAssembly({name:this.genome.id,id:this.genome.id,chromosomes:Pu(this.genome)})}cleanHouseForSession(){for(let e of this.trackViews)e.removeDOMFromColumnContainer();this.columnContainer.querySelectorAll(".igv-axis-column, .igv-column-shim, .igv-column, .igv-sample-name-column, .igv-scrollbar-column, .igv-track-drag-column, .igv-gear-menu-column").forEach((e=>e.remove())),this.trackViews=[],this.circularView&&this.circularView.clearChords()}updateNavbarDOMWithGenome(e){let t=e.id&&e.id.length<10?e.id:"";this.$current_genome.text(t),this.$current_genome.attr("title",e.id||""),this.chromosomeSelectWidget.update(e)}async loadGenome(e){const t=await Ml.expandReference(this.alert,e);await this.loadReference(t,void 0);const i=t.tracks||[];return 0===i.filter((e=>"sequence"===e.type)).length&&i.push({type:"sequence",order:ll}),await this.loadTrackList(i),await this.updateViews(),this.genome}updateUIWithReferenceFrameList(){const e=this.referenceFrameList;this.updateLocusSearchWidget();const t=this.isMultiLocusWholeGenomeView()||Ml.isWholeGenomeView(e[0].chr);this.navbarManager.navbarDidResize(this.$navigation.width(),t),Ow(this.trackViews,this.trackLabelsVisible),this.setCenterLineAndCenterLineButtonVisibility(!Ml.isWholeGenomeView(e[0].chr))}setTrackLabelVisibility(e){Ow(this.trackViews,e)}setROITableVisibility(e){!0===e?this.roiManager.presentTable():this.roiManager.dismissTable()}setCursorGuideVisibility(e){e?this.cursorGuide.show():this.cursorGuide.hide()}setCustomCursorGuideMouseHandler(e){this.cursorGuide.customMouseHandler=e}setCenterLineVisibility(e){for(let t of this.centerLineList)!0===e?(t.show(),t.repaint()):t.hide()}setCenterLineAndCenterLineButtonVisibility(e){for(let t of this.centerLineList){e&&t.isVisible?t.show():t.container.style.display="none"}e&&this.centerLineButton.isVisible?this.centerLineButton.show():this.centerLineButton.button.style.display="none"}async loadTrackList(e){const t=[];for(let i of e)t.push(this._loadTrack(i));const i=await Promise.all(t);return this.trackViews.filter((function(e){return e.track.autoscaleGroup})).length>0&&this.updateViews(),i}async loadTrack(e){const t=this._loadTrack(e);return e.autoscaleGroup&&(await t,this.updateViews()),t}async _loadTrack(e){$i(e)&&(e=JSON.parse(e));try{const t=await this.createTrack(e);if(void 0===t)return;void 0===t.order&&(t.order=this.trackViews.length);const i=new Ef(this,this.columnContainer,t);if(this.trackViews.push(i),Ow(this.trackViews,this.trackLabelsVisible),this.reorderTracks(),this.fireEvent("trackorderchanged",[this.getTrackOrder()]),"function"==typeof t.postInit)try{i.startSpinner(),await t.postInit()}finally{i.stopSpinner()}return t.autoscaleGroup||(e.sync?await i.updateViews():i.updateViews()),"function"==typeof t.hasSamples&&t.hasSamples()&&!1!==this.config.showSampleNameButton&&this.sampleNameControl.show(),t}catch(t){const i={401:"Access unauthorized",403:"Access forbidden",404:"Not found"};console.error(t);let n=t.message||t.error||t.toString();i.hasOwnProperty(n)&&(n=i[n]),n+=": "+e.url,this.alert.present(new Error(n),void 0)}}async loadROI(e){await this.roiManager.loadROI(e,this.genome)}clearROIs(){this.roiManager.clearROIs()}async getUserDefinedROIs(){if(this.roiManager){const e=await this.roiManager.getUserDefinedROISet();if(void 0===e)return[];const t=await e.getAllFeatures(),i=[];for(let e of Object.values(t))i.push(...e);return i}return[]}getRulerTrackView(){const e=this.trackViews.filter((({track:e})=>"ruler"===e.id));return e.length>0?e[0]:void 0}async createTrack(e){let t=await async function(e){return"function"==typeof e?e():e}
+/*! pako 2.1.0 https://github.com/nodeca/pako @license (MIT AND Zlib) */(e.url||e.fastaURL);if($i(t)&&(t=t.trim()),t)if(e.format)e.format=e.format.toLowerCase();else if(e.fastaURL)e.format="fasta";else{let i=e.filename;i||(i=await Ta(t));const n=Ha(i);"tsv"===n?e.format=await qa(e):n?e.format=n:"htsget"===e.sourceType&&await Tc.inferFormat(e)}let i=e.type?e.type.toLowerCase():void 0;if(!i){if(i=Va(e),"bedtype"===i){const t=ld(e,this.genome);e._featureSource=t;const n=await t.trackType();i=n||"annotation"}e.type=i}if(this.trackDefaults&&i){const t=this.trackDefaults[i];if(t)for(let i in t)t.hasOwnProperty(i)&&void 0===e[i]&&(e[i]=t[i])}const n=$b(i,e,this);if(void 0!==n)return e.roi&&e.roi.length>0&&(n.roiSets=e.roi.map((e=>new Rw(e,this.genome)))),n;this.alert.present(new Error(`Error creating track.  Could not determine track type for file: ${e.url||e}`),void 0)}reorderTracks(){this.trackViews.sort((function(e,t){const i=e=>"ideogram"===e.track.id?1:"ruler"===e.track.id?2:3,n=i(e),r=i(t);if(n===r){return(e.track.order||0)-(t.track.order||0)}return n-r}));for(let{axis:e,viewports:t,sampleNameViewport:i,outerScroll:n,dragHandle:r,gearContainer:s}of this.trackViews){e.remove();for(let{$viewport:e}of t)e.detach();i.viewport.remove(),n.remove(),r.remove(),s.remove()}const e=this.columnContainer.querySelectorAll(".igv-column");for(let{axis:t,viewports:i,sampleNameViewport:n,outerScroll:r,dragHandle:s,gearContainer:o}of this.trackViews){this.columnContainer.querySelector(".igv-axis-column").appendChild(t);for(let t=0;t<e.length;t++){const{$viewport:n}=i[t];e[t].appendChild(n.get(0))}this.columnContainer.querySelector(".igv-sample-name-column").appendChild(n.viewport),this.columnContainer.querySelector(".igv-scrollbar-column").appendChild(r),this.columnContainer.querySelector(".igv-track-drag-column").appendChild(s),this.columnContainer.querySelector(".igv-gear-menu-column").appendChild(o)}}getTrackOrder(){return this.trackViews.filter((e=>e.track&&e.track.name)).map((e=>e.track.name))}removeTrackByName(e){const t=this.trackViews.slice();for(let i of t)e===i.track.name&&this.removeTrack(i.track)}removeTrack(e){for(let t of this.trackViews)if(e===t.track){this._removeTrack(t.track);break}}_removeTrack(e){e.disposed||(this.trackViews.splice(this.trackViews.indexOf(e.trackView),1),this.fireEvent("trackremoved",[e]),this.fireEvent("trackorderchanged",[this.getTrackOrder()]),e.trackView&&e.trackView.dispose())}removeAllTracks(){const e=[];for(let t of this.trackViews)"ruler"!==t.track.id&&"ideogram"!==t.track.id?(this.fireEvent("trackremoved",[t.track]),t.dispose()):e.push(t);this.trackViews=e}findTracks(e,t){let i="function"==typeof e?t=>e(t.track):i=>t===i.track[e];return this.trackViews.filter(i).map((e=>e.track))}setTrackHeight(e){this.trackHeight=e,this.trackViews.forEach((function(t){t.setTrackHeight(e)}))}async visibilityChange(){this.layoutChange()}async layoutChange(){if(this.referenceFrameList.find((e=>e.bpPerPixel<0))){const e=this.calculateViewportWidth(this.referenceFrameList.length);for(let t of this.referenceFrameList)t.bpPerPixel=(t.end-t.start)/e}if(this.referenceFrameList){const e=this.isMultiLocusWholeGenomeView()||Ml.isWholeGenomeView(this.referenceFrameList[0].chr);this.navbarManager.navbarDidResize(this.$navigation.width(),e)}Nw.call(this),await this.updateViews()}async updateViews(){const e=this.trackViews;this.updateLocusSearchWidget();for(let e of this.centerLineList)e.repaint();if(this.dragObject)for(let t of e)await t.updateViews();else{const r={},s=[];for(let i of e){const e=i.track.autoscaleGroup;if(e){var t=r[e];t||(t=[],r[e]=t),t.push(i)}else s.push(i)}if(Object.entries(r).length>0){const e=Object.keys(r);for(let t of e){const e=r[t],s=[];for(let t of e)s.push(t.getInViewFeatures());const o=await Promise.all(s);var i,n=[];for(let e of o)n=n.concat(e);i=Aa(n);const a=[];for(let t of e)t.track.dataRange=i,t.track.autoscale=!1,a.push(t.updateViews());await Promise.all(a)}}await Promise.all(s.map((e=>e.updateViews())))}}repaintViews(){for(let e of this.trackViews)e.repaintViews()}updateLocusSearchWidget(){if(!this.referenceFrameList)return;const e=this.referenceFrameList,t=this.calculateViewportWidth(this.referenceFrameList.length);for(let i of e)i.end=i.start+i.bpPerPixel*t;this.chromosomeSelectWidget.select.value=1===e.length?this.referenceFrameList[0].chr:"";const i=this.referenceFrameList.map((e=>e.getLocusString())).join(" ");this.$searchInput.val(i),this.fireEvent("locuschange",[this.referenceFrameList])}calculateViewportWidth(e){let{width:t}=this.columnContainer.getBoundingClientRect();return t-=50+this.getSampleNameViewportWidth()+14+12+28,t-=5*(e-1),Math.floor(t/e)}getCenterLineXOffset(){let{width:e}=this.columnContainer.getBoundingClientRect();return e-=50+this.getSampleNameViewportWidth()+14+12+28,Math.floor(e/2+50)}minimumBases(){return this.config.minimumBases}zoomIn(){this.zoomWithScaleFactor(.5)}zoomOut(){this.zoomWithScaleFactor(2)}async zoomWithScaleFactor(e,t,i){if(!this.referenceFrameList)return;const n=this.calculateViewportWidth(this.referenceFrameList.length);let r=i?[i]:this.referenceFrameList;for(let i of r)i.zoomWithScaleFactor(this,e,n,t)}async addMultiLocusPanel(e,t,i,n){if(!this.referenceFrameList)return;const r=this.calculateViewportWidth(1+this.referenceFrameList.length),s=this.calculateViewportWidth(this.referenceFrameList.length)/this.calculateViewportWidth(1+this.referenceFrameList.length);for(let e of this.referenceFrameList)e.bpPerPixel*=s;const o=(i-t)/r,a=new Kb(this.genome,e,t,i,o),l=n?this.referenceFrameList.indexOf(n):this.referenceFrameList.length-1,h=1+l,{$viewport:c}=this.trackViews[0].viewports[l],d=pw(c.get(0).parentElement);if(h===this.referenceFrameList.length){this.referenceFrameList.push(a);for(let e of this.trackViews){const t=vf(e,d,a);e.viewports.push(t)}}else{this.referenceFrameList.splice(h,0,a);for(let e of this.trackViews){const t=vf(e,d,a);e.viewports.splice(h,0,t)}}this.centerLineList=this.createCenterLineList(this.columnContainer),Nw.call(this),await this.updateViews(!0)}async removeMultiLocusPanel(e){const t=this.referenceFrameList.indexOf(e),{$viewport:i}=this.trackViews[0].viewports[t];fw(t,i.parent().get(0));for(let{viewports:e}of this.trackViews)e[t].dispose(),e.splice(t,1);if(this.referenceFrameList.splice(t,1),1===this.referenceFrameList.length&&this.getRulerTrackView())for(let e of this.getRulerTrackView().viewports)e.dismissLocusLabel();const n=this.calculateViewportWidth(1+this.referenceFrameList.length)/this.calculateViewportWidth(this.referenceFrameList.length);await this.rescaleForMultiLocus(n)}async gotoMultilocusPanel(e){const t=this.referenceFrameList.indexOf(e);this.columnContainer.querySelectorAll(".igv-column").forEach(((e,i)=>{i===t||e.remove()})),this.columnContainer.querySelectorAll(".igv-column-shim").forEach((e=>e.remove()));for(let e of this.trackViews){const i=e.viewports[t];e.viewports.filter(((e,i)=>i!==t)).forEach((e=>e.dispose())),e.viewports=[i]}const i=this.calculateViewportWidth(1);e.bpPerPixel=(e.end-e.start)/i,this.referenceFrameList=[e],this.trackViews.forEach((({viewports:e})=>e.forEach((e=>e.setWidth(i))))),this.centerLineList=this.createCenterLineList(this.columnContainer),this.updateUIWithReferenceFrameList(),await this.updateViews(!0)}async rescaleForMultiLocus(e){const t=this.calculateViewportWidth(this.referenceFrameList.length);for(let t of this.referenceFrameList)t.bpPerPixel*=e;for(let{viewports:e}of this.trackViews)for(let i of e)i.setWidth(t);this.centerLineList=this.createCenterLineList(this.columnContainer),this.updateUIWithReferenceFrameList(),await this.updateViews()}async goto(e,t,i){await this.search(e+":"+t+"-"+i)}async doSearch(e,t){const i=await this.search(e,t);return i||this.alert.present(new Error(`Unrecognized locus: <b> ${e} </b>`)),i}async search(e,t){const i=await ew(this,e);if(i&&i.length>0){this.referenceFrameList=function(e,t,i,n,r,s){return e.map((e=>{if(i&&e.gene&&(e.start=Math.max(0,e.start-i),e.end+=i),!s){const i=t.getChromosome(e.chr);Ea(i.bpLength,e,n)}const o=new Kb(t,e.chr,e.start,e.end,(e.end-e.start)/r);return o.locusSearchString=e.locusSearchString,(e.gene||e.snp)&&(o.selection=new Xb(e.gene,e.snp)),o}))}(i,this.genome,this.flanking,this.minimumBases(),this.calculateViewportWidth(i.length),this.isSoftclipped());for(let e of this.trackViews)e.removeDOMFromColumnContainer();this.columnContainer.querySelectorAll(".igv-column-shim, .igv-column").forEach((e=>e.remove())),gw(this.columnContainer.querySelector(".igv-sample-name-column"),this.referenceFrameList.length),this.centerLineList=this.createCenterLineList(this.columnContainer);for(let e of this.trackViews)e.addDOMToColumnContainer(this,this.columnContainer,this.referenceFrameList);return this.updateUIWithReferenceFrameList(),t||await this.updateViews(),!0}return!1}async loadSampleInformation(e){var t=e;Yi(e)&&(t=e.name),"fam"===t.substr(t.lastIndexOf(".")+1)&&(this.sampleInformation=await function(e,t){return(new Qb).loadPlinkFile(e,t)}(e))}on(e,t){this.eventHandlers[e]||(this.eventHandlers[e]=[]),this.eventHandlers[e].push(t)}un(e,t){this.off(e,t)}off(e,t){if(e)if(t){const i=this.eventHandlers[e];if(i&&0!==i.length){const n=i.indexOf(t);-1!==n&&this.eventHandlers[e].splice(n,1)}else console.warn("No handlers to remove for event: "+e)}else this.eventHandlers[e]=[];else this.eventHandlers={}}fireEvent(e,t,i){const n=this.eventHandlers[e];if(void 0===n||0===n.length)return;const r=i||window;return n.map((function(e){return e.apply(r,t)}))[0]}dispose(){this.removeMouseHandlers();for(let e of this.trackViews)e.dispose()}toJSON(){const e={version:"2.15.11"};if(void 0!==this.showSampleNames&&(e.showSampleNames=this.showSampleNames),200!==this.sampleNameViewportWidth&&(e.sampleNameViewportWidth=this.sampleNameViewportWidth),e.reference=this.genome.toJSON(),e.reference.fastaURL instanceof File)throw new Error(`Error. Sessions cannot include local file references ${e.reference.fastaURL.name}.`);if(e.reference.indexURL instanceof File)throw new Error(`Error. Sessions cannot include local file references ${e.reference.indexURL.name}.`);const t=[],i={};let n=!1,r=this.trackViews[0];for(let{referenceFrame:e}of r.viewports){const r=e.getLocusString();if(t.push(r),e.selection){const t={gene:e.selection.gene,snp:e.selection.snp};i[r]=t,n=!0}}e.locus=1===t.length?t[0]:t,n&&(e.gtexSelections=i),e.roi=this.roiManager.toJSON();const s=[],o=[];for(let{track:e}of this.trackViews)try{let t;t="function"==typeof e.getState?e.getState():e.config,t&&(t.browser&&delete t.browser,t.order=e.order,s.push(t))}catch(t){console.error(`Track: ${e.name}: ${t}`),o.push(`Track: ${e.name}: ${t}`)}if(o.length>0){let e=1,t="Errors encountered saving session: </br>";for(let i of o)t+=` (${e++}) ${i.toString()} <br/>`;throw Error(t)}return e.tracks=s,e}compressedSession(){return function(e){const t=new Uint8Array(e.length);for(var i=0;i<e.length;i++)t[i]=e.charCodeAt(i);const n=new _o(t),r=String.fromCharCode.apply(null,n);return btoa(r).replace(/\+/g,".").replace(/\//g,"_").replace(/=/g,"-")}(JSON.stringify(this.toJSON()))}sessionURL(){const e=window.location.href.slice(),t=e.indexOf("?");return(t>0?e.substring(0,t):e)+"?sessionURL=blob:"+this.compressedSession()}mouseDownOnViewport(e,t){var i;i=_t.pageCoordinates(e),this.vpMouseDown={viewport:t,lastMouseX:i.x,mouseDownX:i.x,lastMouseY:i.y,mouseDownY:i.y,referenceFrame:t.referenceFrame}}cancelTrackPan(){const e=this.dragObject;this.dragObject=void 0,this.isScrolling=!1,this.vpMouseDown=void 0,e&&e.viewport.referenceFrame.start!==e.start&&(this.updateViews(),this.fireEvent("trackdragend"))}isTrackPanning(){return this.dragObject}isSoftclipped(){return void 0!==this.trackViews.find((e=>!0===e.track.showSoftClips))}startTrackDrag(e){this.dragTrack=e}updateTrackDrag(e){if(e&&this.dragTrack){const t=this.dragTrack,i=this.trackViews.indexOf(e),n=this.trackViews.indexOf(t),r=this.trackViews;r[i]=t,r[n]=e;const s=this.trackViews[i].track.order;this.trackViews[n].track.order=s;const o=r.length;let a=s;if(i<n)for(let e=i+1;e<o;e++){const t=r[e].track;if(!(t.order<=a))break;t.order=Math.min(Number.MAX_SAFE_INTEGER,a+1),a=t.order}else for(let e=i-1;e>0;e--){const t=r[e].track;if(!(t.order>=a))break;t.order=Math.max(-Number.MAX_SAFE_INTEGER,a-1),a=t.order}this.reorderTracks()}}endTrackDrag(){this.dragTrack?(this.dragTrack=void 0,this.fireEvent("trackorderchanged",[this.getTrackOrder()])):this.dragTrack=void 0}addMouseHandlers(){this.addWindowResizeHandler(),this.addRootMouseUpHandler(),this.addRootMouseLeaveHandler(),this.addColumnContainerEventHandlers()}removeMouseHandlers(){this.removeWindowResizeHandler(),this.removeRootMouseUpHandler(),this.removeRootMouseLeaveHandler(),this.removeColumnContainerEventHandlers()}addWindowResizeHandler(){this.boundWindowResizeHandler=Nw.bind(this),window.addEventListener("resize",this.boundWindowResizeHandler)}removeWindowResizeHandler(){window.removeEventListener("resize",this.boundWindowResizeHandler)}addRootMouseUpHandler(){this.boundRootMouseUpHandler=Bw.bind(this),this.root.addEventListener("mouseup",this.boundRootMouseUpHandler)}removeRootMouseUpHandler(){this.root.removeEventListener("mouseup",this.boundRootMouseUpHandler)}addRootMouseLeaveHandler(){this.boundRootMouseLeaveHandler=Bw.bind(this),this.root.addEventListener("mouseleave",this.boundRootMouseLeaveHandler)}removeRootMouseLeaveHandler(){this.root.removeEventListener("mouseleave",this.boundRootMouseLeaveHandler)}addColumnContainerEventHandlers(){this.boundColumnContainerMouseMoveHandler=Fw.bind(this),this.boundColumnContainerTouchMoveHandler=Fw.bind(this),this.boundColumnContainerMouseLeaveHandler=Bw.bind(this),this.boundColumnContainerMouseUpHandler=Bw.bind(this),this.boundColumnContainerTouchEndHandler=Bw.bind(this),this.columnContainer.addEventListener("mousemove",this.boundColumnContainerMouseMoveHandler),this.columnContainer.addEventListener("touchmove",this.boundColumnContainerTouchMoveHandler),this.columnContainer.addEventListener("mouseleave",this.boundColumnContainerMouseLeaveHandler),this.columnContainer.addEventListener("mouseup",this.boundColumnContainerMouseUpHandler),this.columnContainer.addEventListener("touchend",this.boundColumnContainerTouchEndHandler)}removeColumnContainerEventHandlers(){this.columnContainer.removeEventListener("mousemove",this.boundColumnContainerMouseMoveHandler),this.columnContainer.removeEventListener("touchmove",this.boundColumnContainerTouchMoveHandler),this.columnContainer.removeEventListener("mouseleave",this.boundColumnContainerMouseLeaveHandler),this.columnContainer.removeEventListener("mouseup",this.boundColumnContainerMouseUpHandler),this.columnContainer.removeEventListener("touchend",this.boundColumnContainerTouchEndHandler)}static uncompressSession(e){let t;if(e.indexOf("/gzip;base64")>0){t=Lo(e);let i="";for(let e of t)i+=String.fromCharCode(e);return i}return function(e){e=e.replace(/\./g,"+").replace(/_/g,"/").replace(/-/g,"=");const t=atob(e),i=[];for(let e=0;e<t.length;e++)i.push(t.charCodeAt(e));const n=ko(i);let r="";for(let e of n)r+=String.fromCharCode(e);return r}(e.substring(5))}createCircularView(e,t){var i;return t=!0===t,this.circularView=(i=this,new Lu(e,{onChordClick:(e,t,n)=>{const r=e.data,s=r.mate;function o(e){e.chr=i.genome.getChromosomeName(e.refName);let t=!1;for(let n of i.referenceFrameList){const i=hu.fromLocusString(n.getLocusString());if(i.contains(e)){t=!0;break}if(i.overlaps(e)){n.extend(e),t=!0;break}}if(!t){const t=2e3,n=(e.start+e.end)/2;i.addMultiLocusPanel(e.chr,n-t,n+t)}}o(r),o(s)}})),this.circularViewControl=new yw(this.$toggle_button_container.get(0),this),this.circularView.setAssembly({name:this.genome.id,id:this.genome.id,chromosomes:Pu(this.genome)}),this.circularViewVisible=t,this.circularView}get circularViewVisible(){return void 0!==this.circularView&&this.circularView.visible}set circularViewVisible(e){this.circularView&&(this.circularView.visible=e,this.circularViewControl.setState(e))}}async function Nw(){if(!this.referenceFrameList)return;const e=this.calculateViewportWidth(this.referenceFrameList.length);for(let t of this.referenceFrameList){const i=this.referenceFrameList.indexOf(t),{chr:n,genome:r}=t,{bpLength:s}=r.getChromosome(t.chr),o=t.toBP(e);Ml.isWholeGenomeView(n)||o>s?t.bpPerPixel=s/e:t.end=t.start+t.toBP(e);for(let{viewports:t}of this.trackViews)t[i].setWidth(e)}this.updateUIWithReferenceFrameList(),await this.updateViews(!0)}function Fw(e){e.preventDefault();const{x:t,y:i}=_t.pageCoordinates(e);if(this.vpMouseDown){const{viewport:e,referenceFrame:n}=this.vpMouseDown,r=Math.abs(t-this.vpMouseDown.mouseDownX)>Math.abs(i-this.vpMouseDown.mouseDownY);if(!this.dragObject&&!this.isScrolling)if(r)this.vpMouseDown.mouseDownX&&Math.abs(t-this.vpMouseDown.mouseDownX)>this.constants.dragThreshold&&(this.dragObject={viewport:e,start:n.start});else if(this.vpMouseDown.mouseDownY&&Math.abs(i-this.vpMouseDown.mouseDownY)>this.constants.scrollThreshold){this.isScrolling=!0;const t=e.$viewport.height(),i=e.trackView.maxViewportContentHeight();this.vpMouseDown.r=t/i}if(this.dragObject){const i=!this.isSoftclipped();let r=this.vpMouseDown.lastMouseX-t;n.shiftPixels(r,e.$viewport.width(),i)&&this.updateViews(),this.fireEvent("trackdrag")}if(this.isScrolling){const t=this.vpMouseDown.r*(this.vpMouseDown.lastMouseY-i);e.trackView.moveScroller(t)}this.vpMouseDown.lastMouseX=t,this.vpMouseDown.lastMouseY=i}}function Bw(e){this.cancelTrackPan(),this.endTrackDrag()}function Ow(e,t){for(let{viewports:i}of e)for(let e of i)e.$trackLabel&&(0===i.indexOf(e)&&!0===t?e.$trackLabel.show():e.$trackLabel.hide())}let Dw=[];const Pw=ta.setApiKey;!function(){var e=document.createElement("style");e.setAttribute("type","text/css"),e.innerHTML='.igv-navbar {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  box-sizing: border-box;\n  width: 100%;\n  color: #444;\n  font-size: 12px;\n  font-family: "Open Sans", sans-serif;\n  font-weight: 400;\n  line-height: 32px;\n  padding-left: 8px;\n  padding-right: 8px;\n  margin-top: 2px;\n  margin-bottom: 6px;\n  height: 32px;\n  border-style: solid;\n  border-radius: 3px;\n  border-width: thin;\n  border-color: #bfbfbf;\n  background-color: #f3f3f3;\n}\n.igv-navbar .igv-navbar-left-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  height: 32px;\n  line-height: 32px;\n}\n.igv-navbar .igv-navbar-left-container .igv-logo {\n  width: 34px;\n  height: 32px;\n  margin-right: 8px;\n}\n.igv-navbar .igv-navbar-left-container .igv-current-genome {\n  height: 32px;\n  margin-left: 4px;\n  margin-right: 4px;\n  user-select: none;\n  line-height: 32px;\n  vertical-align: middle;\n  text-align: center;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  height: 100%;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-chromosome-select-widget-container {\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n  height: 100%;\n  width: 125px;\n  margin-right: 4px;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-chromosome-select-widget-container select {\n  display: block;\n  cursor: pointer;\n  width: 100px;\n  height: 75%;\n  outline: none;\n  font-size: 12px;\n  font-family: "Open Sans", sans-serif;\n  font-weight: 400;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  margin-left: 8px;\n  height: 22px;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n  width: 210px;\n  height: 22px;\n  line-height: 22px;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container input.igv-search-input {\n  cursor: text;\n  width: 85%;\n  height: 22px;\n  line-height: 22px;\n  font-size: 12px;\n  font-family: "Open Sans", sans-serif;\n  font-weight: 400;\n  text-align: left;\n  padding-left: 8px;\n  margin-right: 8px;\n  outline: none;\n  border-style: solid;\n  border-radius: 3px;\n  border-width: thin;\n  border-color: #bfbfbf;\n  background-color: white;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container .igv-search-icon-container {\n  cursor: pointer;\n  height: 16px;\n  width: 16px;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-windowsize-panel-container {\n  margin-left: 4px;\n  user-select: none;\n}\n.igv-navbar .igv-navbar-right-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  height: 32px;\n  line-height: 32px;\n}\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  height: 100%;\n}\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container div {\n  margin-left: 0;\n  margin-right: 4px;\n}\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container div:last-child {\n  margin-left: 0;\n  margin-right: 0;\n}\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container-750 {\n  display: none;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget {\n  color: #737373;\n  font-size: 18px;\n  height: 32px;\n  line-height: 32px;\n  margin-left: 8px;\n  user-select: none;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div {\n  cursor: pointer;\n  margin-left: unset;\n  margin-right: unset;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:first-child {\n  height: 24px;\n  width: 24px;\n  margin-left: unset;\n  margin-right: 8px;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:last-child {\n  height: 24px;\n  width: 24px;\n  margin-left: 8px;\n  margin-right: unset;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:nth-child(even) {\n  display: block;\n  height: fit-content;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget input {\n  display: block;\n  width: 125px;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget svg {\n  display: block;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 {\n  color: #737373;\n  font-size: 18px;\n  height: 32px;\n  line-height: 32px;\n  margin-left: 8px;\n  user-select: none;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div {\n  cursor: pointer;\n  margin-left: unset;\n  margin-right: unset;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:first-child {\n  height: 24px;\n  width: 24px;\n  margin-left: unset;\n  margin-right: 8px;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:last-child {\n  height: 24px;\n  width: 24px;\n  margin-left: 8px;\n  margin-right: unset;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:nth-child(even) {\n  width: 0;\n  height: 0;\n  display: none;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 input {\n  width: 0;\n  height: 0;\n  display: none;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 svg {\n  display: block;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-hidden {\n  display: none;\n}\n\n.igv-navbar-button {\n  display: block;\n  box-sizing: unset;\n  padding-left: 6px;\n  padding-right: 6px;\n  height: 18px;\n  text-transform: capitalize;\n  user-select: none;\n  line-height: 18px;\n  text-align: center;\n  vertical-align: middle;\n  font-family: "Open Sans", sans-serif;\n  font-size: 11px;\n  font-weight: 200;\n  color: #737373;\n  background-color: #f3f3f3;\n  border-color: #737373;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 6px;\n}\n\n.igv-navbar-button-clicked {\n  color: white;\n  background-color: #737373;\n}\n\n.igv-navbar-button:hover {\n  cursor: pointer;\n}\n\n.igv-zoom-in-notice-container {\n  z-index: 1024;\n  position: absolute;\n  top: 8px;\n  left: 50%;\n  transform: translate(-50%, 0%);\n  display: flex;\n  flex-direction: row;\n  flex-wrap: nowrap;\n  justify-content: center;\n  align-items: center;\n  background-color: white;\n}\n.igv-zoom-in-notice-container > div {\n  padding-left: 4px;\n  padding-right: 4px;\n  padding-top: 2px;\n  padding-bottom: 2px;\n  width: 100%;\n  height: 100%;\n  font-family: "Open Sans", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  color: #3f3f3f;\n}\n\n.igv-zoom-in-notice {\n  position: absolute;\n  top: 10px;\n  left: 50%;\n}\n.igv-zoom-in-notice div {\n  position: relative;\n  left: -50%;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  color: #3f3f3f;\n  background-color: rgba(255, 255, 255, 0.51);\n  z-index: 64;\n}\n\n.igv-container-spinner {\n  position: absolute;\n  top: 90%;\n  left: 50%;\n  transform: translate(-50%, -50%);\n  z-index: 1024;\n  width: 24px;\n  height: 24px;\n  pointer-events: none;\n  color: #737373;\n}\n\n.igv-multi-locus-close-button {\n  position: absolute;\n  top: 2px;\n  right: 0;\n  padding-left: 2px;\n  padding-right: 2px;\n  width: 12px;\n  height: 12px;\n  color: #666666;\n  background-color: white;\n  z-index: 1000;\n}\n.igv-multi-locus-close-button > svg {\n  vertical-align: top;\n}\n\n.igv-multi-locus-close-button:hover {\n  cursor: pointer;\n  color: #434343;\n}\n\n.igv-multi-locus-ruler-label {\n  z-index: 64;\n  position: absolute;\n  top: 2px;\n  left: 0;\n  width: 100%;\n  height: 12px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: center;\n  align-items: center;\n}\n.igv-multi-locus-ruler-label > div {\n  font-family: "Open Sans", sans-serif;\n  font-size: 12px;\n  color: rgb(16, 16, 16);\n  background-color: white;\n}\n.igv-multi-locus-ruler-label > div {\n  cursor: pointer;\n}\n\n.igv-multi-locus-ruler-label-square-dot {\n  z-index: 64;\n  position: absolute;\n  left: 50%;\n  top: 5%;\n  transform: translate(-50%, 0%);\n  background-color: white;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-multi-locus-ruler-label-square-dot > div:first-child {\n  width: 14px;\n  height: 14px;\n}\n.igv-multi-locus-ruler-label-square-dot > div:last-child {\n  margin-left: 16px;\n  font-family: "Open Sans", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  color: rgb(16, 16, 16);\n}\n\n.igv-ruler-sweeper {\n  display: none;\n  pointer-events: none;\n  position: absolute;\n  top: 26px;\n  bottom: 0;\n  left: 0;\n  width: 0;\n  z-index: 99999;\n  background-color: rgba(68, 134, 247, 0.25);\n}\n\n.igv-ruler-tooltip {\n  pointer-events: none;\n  z-index: 128;\n  position: absolute;\n  top: 0;\n  left: 0;\n  width: 1px;\n  height: 32px;\n  background-color: transparent;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-ruler-tooltip > div {\n  pointer-events: none;\n  width: 128px;\n  height: auto;\n  padding: 1px;\n  color: #373737;\n  font-size: 10px;\n  font-family: "Open Sans", sans-serif;\n  font-weight: 400;\n  background-color: white;\n  border-style: solid;\n  border-width: thin;\n  border-color: #373737;\n}\n\n.igv-track-label {\n  position: absolute;\n  left: 8px;\n  top: 8px;\n  width: auto;\n  height: auto;\n  max-width: 50%;\n  padding-left: 4px;\n  padding-right: 4px;\n  white-space: nowrap;\n  overflow: hidden;\n  text-overflow: ellipsis;\n  font-family: "Open Sans", sans-serif;\n  font-size: small;\n  font-weight: 400;\n  text-align: center;\n  user-select: none;\n  -moz-user-select: none;\n  -webkit-user-select: none;\n  border-color: #444;\n  border-radius: 2px;\n  border-style: solid;\n  border-width: thin;\n  background-color: white;\n  z-index: 128;\n  cursor: pointer;\n}\n\n.igv-track-label:hover,\n.igv-track-label:focus,\n.igv-track-label:active {\n  background-color: #e8e8e8;\n}\n\n.igv-track-label-popup-shim {\n  padding-left: 8px;\n  padding-right: 8px;\n  padding-top: 4px;\n}\n\n.igv-center-line {\n  display: none;\n  pointer-events: none;\n  position: absolute;\n  top: 0;\n  bottom: 0;\n  left: 50%;\n  transform: translateX(-50%);\n  z-index: 8;\n  user-select: none;\n  -moz-user-select: none;\n  -webkit-user-select: none;\n  border-left-style: dashed;\n  border-left-width: thin;\n  border-right-style: dashed;\n  border-right-width: thin;\n}\n\n.igv-center-line-wide {\n  background-color: rgba(0, 0, 0, 0);\n  border-left-color: rgba(127, 127, 127, 0.51);\n  border-right-color: rgba(127, 127, 127, 0.51);\n}\n\n.igv-center-line-thin {\n  background-color: rgba(0, 0, 0, 0);\n  border-left-color: rgba(127, 127, 127, 0.51);\n  border-right-color: rgba(0, 0, 0, 0);\n}\n\n.igv-cursor-guide-horizontal {\n  display: none;\n  pointer-events: none;\n  user-select: none;\n  -moz-user-select: none;\n  -webkit-user-select: none;\n  position: absolute;\n  left: 0;\n  right: 0;\n  top: 50%;\n  height: 1px;\n  z-index: 1;\n  margin-left: 50px;\n  margin-right: 54px;\n  border-top-style: dotted;\n  border-top-width: thin;\n  border-top-color: rgba(127, 127, 127, 0.76);\n}\n\n.igv-cursor-guide-vertical {\n  pointer-events: none;\n  user-select: none;\n  -moz-user-select: none;\n  -webkit-user-select: none;\n  position: absolute;\n  top: 0;\n  bottom: 0;\n  left: 50%;\n  width: 1px;\n  z-index: 1;\n  border-left-style: dotted;\n  border-left-width: thin;\n  border-left-color: rgba(127, 127, 127, 0.76);\n  display: none;\n}\n\n.igv-user-feedback {\n  position: fixed;\n  top: 50%;\n  left: 50%;\n  transform: translate(-50%, -50%);\n  width: 512px;\n  height: 360px;\n  z-index: 2048;\n  background-color: white;\n  border-color: #a2a2a2;\n  border-style: solid;\n  border-width: thin;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  color: #444;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-user-feedback div:first-child {\n  position: relative;\n  height: 24px;\n  width: 100%;\n  background-color: white;\n  border-bottom-color: #a2a2a2;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-user-feedback div:first-child div {\n  position: absolute;\n  top: 2px;\n  width: 16px;\n  height: 16px;\n  background-color: transparent;\n}\n.igv-user-feedback div:first-child div:first-child {\n  left: 8px;\n}\n.igv-user-feedback div:first-child div:last-child {\n  cursor: pointer;\n  right: 8px;\n}\n.igv-user-feedback div:last-child {\n  width: 100%;\n  height: calc(100% - 24px);\n  border-width: 0;\n}\n.igv-user-feedback div:last-child div {\n  width: auto;\n  height: auto;\n  margin: 8px;\n}\n\n.igv-generic-dialog-container {\n  position: absolute;\n  top: 0;\n  left: 0;\n  width: 300px;\n  height: 200px;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  z-index: 2048;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-header {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-generic-dialog-container .igv-generic-dialog-header div {\n  margin-right: 4px;\n  margin-bottom: 2px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-generic-dialog-container .igv-generic-dialog-header div:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-generic-dialog-container .igv-generic-dialog-one-liner {\n  color: #373737;\n  width: 95%;\n  height: 24px;\n  line-height: 24px;\n  text-align: left;\n  margin-top: 8px;\n  padding-left: 8px;\n  overflow-wrap: break-word;\n  background-color: white;\n}\n.igv-generic-dialog-container .igv-generic-dialog-label-input {\n  margin-top: 8px;\n  width: 95%;\n  height: 24px;\n  color: #373737;\n  line-height: 24px;\n  padding-left: 8px;\n  background-color: white;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-label-input div {\n  width: 30%;\n  height: 100%;\n  font-size: 16px;\n  text-align: right;\n  padding-right: 8px;\n  background-color: white;\n}\n.igv-generic-dialog-container .igv-generic-dialog-label-input input {\n  display: block;\n  height: 100%;\n  width: 100%;\n  padding-left: 4px;\n  font-family: "Open Sans", sans-serif;\n  font-weight: 400;\n  color: #373737;\n  text-align: left;\n  outline: none;\n  border-style: solid;\n  border-width: thin;\n  border-color: #7F7F7F;\n  background-color: white;\n}\n.igv-generic-dialog-container .igv-generic-dialog-label-input input {\n  width: 50%;\n  font-size: 16px;\n}\n.igv-generic-dialog-container .igv-generic-dialog-input {\n  margin-top: 8px;\n  width: calc(100% - 16px);\n  height: 24px;\n  color: #373737;\n  line-height: 24px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-input input {\n  display: block;\n  height: 100%;\n  width: 100%;\n  padding-left: 4px;\n  font-family: "Open Sans", sans-serif;\n  font-weight: 400;\n  color: #373737;\n  text-align: left;\n  outline: none;\n  border-style: solid;\n  border-width: thin;\n  border-color: #7F7F7F;\n  background-color: white;\n}\n.igv-generic-dialog-container .igv-generic-dialog-input input {\n  font-size: 16px;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel {\n  width: 100%;\n  height: 28px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div {\n  margin-top: 32px;\n  color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  width: 75px;\n  height: 28px;\n  line-height: 28px;\n  text-align: center;\n  border-color: transparent;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 2px;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:first-child {\n  margin-left: 32px;\n  margin-right: 0;\n  background-color: #5ea4e0;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:last-child {\n  margin-left: 0;\n  margin-right: 32px;\n  background-color: #c4c4c4;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:first-child:hover {\n  cursor: pointer;\n  background-color: #3b5c7f;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:last-child:hover {\n  cursor: pointer;\n  background-color: #7f7f7f;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok {\n  width: 100%;\n  height: 36px;\n  margin-top: 32px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok div {\n  width: 98px;\n  height: 36px;\n  line-height: 36px;\n  text-align: center;\n  color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  border-color: white;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 4px;\n  background-color: #2B81AF;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok div:hover {\n  cursor: pointer;\n  background-color: #25597f;\n}\n\n.igv-generic-container {\n  position: absolute;\n  top: 0;\n  left: 0;\n  z-index: 2048;\n  background-color: white;\n  cursor: pointer;\n  display: flex;\n  flex-direction: row;\n  flex-wrap: wrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-generic-container div:first-child {\n  cursor: move;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  height: 24px;\n  width: 100%;\n  background-color: #dddddd;\n}\n.igv-generic-container div:first-child i {\n  display: block;\n  color: #5f5f5f;\n  cursor: pointer;\n  width: 14px;\n  height: 14px;\n  margin-right: 8px;\n  margin-bottom: 4px;\n}\n\n.igv-menu-popup {\n  position: absolute;\n  top: 0;\n  left: 0;\n  width: max-content;\n  z-index: 4096;\n  cursor: pointer;\n  font-family: "Open Sans", sans-serif;\n  font-size: small;\n  font-weight: 400;\n  color: #4b4b4b;\n  background: white;\n  border-radius: 4px;\n  border-color: #7F7F7F;\n  border-style: solid;\n  border-width: thin;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-end;\n  text-align: left;\n}\n.igv-menu-popup > div:not(:first-child) {\n  width: 100%;\n}\n.igv-menu-popup > div:not(:first-child) > div {\n  background: white;\n}\n.igv-menu-popup > div:not(:first-child) > div.context-menu {\n  padding-left: 4px;\n  padding-right: 4px;\n}\n.igv-menu-popup > div:not(:first-child) > div:last-child {\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n  border-bottom-color: transparent;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-menu-popup > div:not(:first-child) > div:hover {\n  background: #efefef;\n}\n\n.igv-menu-popup-shim {\n  padding-left: 8px;\n  padding-right: 8px;\n  padding-bottom: 1px;\n  padding-top: 1px;\n}\n\n.igv-menu-popup-header {\n  position: relative;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-color: transparent;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n}\n.igv-menu-popup-header div {\n  margin-right: 4px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-menu-popup-header div:hover {\n  cursor: pointer;\n  color: #444;\n}\n\n.igv-menu-popup-check-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n  width: 100%;\n  height: 20px;\n  margin-right: 4px;\n  background-color: transparent;\n}\n.igv-menu-popup-check-container div {\n  padding-top: 2px;\n  padding-left: 8px;\n}\n.igv-menu-popup-check-container div:first-child {\n  position: relative;\n  width: 12px;\n  height: 12px;\n}\n.igv-menu-popup-check-container div:first-child svg {\n  position: absolute;\n  width: 12px;\n  height: 12px;\n}\n\n.igv-user-feedback {\n  position: fixed;\n  top: 50%;\n  left: 50%;\n  transform: translate(-50%, -50%);\n  width: 512px;\n  height: 360px;\n  z-index: 2048;\n  background-color: white;\n  border-color: #a2a2a2;\n  border-style: solid;\n  border-width: thin;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  color: #444;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-user-feedback div:first-child {\n  position: relative;\n  height: 24px;\n  width: 100%;\n  background-color: white;\n  border-bottom-color: #a2a2a2;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-user-feedback div:first-child div {\n  position: absolute;\n  top: 2px;\n  width: 16px;\n  height: 16px;\n  background-color: transparent;\n}\n.igv-user-feedback div:first-child div:first-child {\n  left: 8px;\n}\n.igv-user-feedback div:first-child div:last-child {\n  cursor: pointer;\n  right: 8px;\n}\n.igv-user-feedback div:last-child {\n  width: 100%;\n  height: calc(100% - 24px);\n  border-width: 0;\n}\n.igv-user-feedback div:last-child div {\n  width: auto;\n  height: auto;\n  margin: 8px;\n}\n\n.igv-loading-spinner-container {\n  z-index: 1024;\n  position: absolute;\n  top: 50%;\n  left: 50%;\n  transform: translate(-50%, -50%);\n  width: 32px;\n  height: 32px;\n  display: flex;\n  flex-direction: row;\n  flex-wrap: nowrap;\n  justify-content: center;\n  align-items: center;\n}\n.igv-loading-spinner-container > div {\n  box-sizing: border-box;\n  width: 100%;\n  height: 100%;\n  border-radius: 50%;\n  border: 4px solid rgba(128, 128, 128, 0.5);\n  border-top-color: rgb(255, 255, 255);\n  animation: spin 1s ease-in-out infinite;\n  -webkit-animation: spin 1s ease-in-out infinite;\n}\n\n@keyframes spin {\n  to {\n    -webkit-transform: rotate(360deg);\n    transform: rotate(360deg);\n  }\n}\n@-webkit-keyframes spin {\n  to {\n    -webkit-transform: rotate(360deg);\n    transform: rotate(360deg);\n  }\n}\n.igv-roi-menu-next-gen {\n  position: absolute;\n  z-index: 512;\n  font-family: "Open Sans", sans-serif;\n  font-size: small;\n  font-weight: 400;\n  color: #4b4b4b;\n  background-color: white;\n  width: 192px;\n  border-radius: 4px;\n  border-color: #7F7F7F;\n  border-style: solid;\n  border-width: thin;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n}\n.igv-roi-menu-next-gen > div:first-child {\n  height: 24px;\n  border-top-color: transparent;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n}\n.igv-roi-menu-next-gen > div:first-child > div {\n  margin-right: 4px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-roi-menu-next-gen > div:first-child > div:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-roi-menu-next-gen > div:last-child {\n  background-color: white;\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n  border-bottom-color: transparent;\n  border-bottom-style: solid;\n  border-bottom-width: 0;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n  text-align: start;\n  vertical-align: middle;\n}\n.igv-roi-menu-next-gen > div:last-child > div {\n  height: 24px;\n  padding-left: 4px;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  border-bottom-color: #7f7f7f;\n}\n.igv-roi-menu-next-gen > div:last-child > div:not(:first-child):hover {\n  background-color: rgba(127, 127, 127, 0.1);\n}\n.igv-roi-menu-next-gen > div:last-child div:first-child {\n  font-style: italic;\n  text-align: center;\n  padding-right: 4px;\n  white-space: nowrap;\n  overflow: hidden;\n  text-overflow: ellipsis;\n}\n.igv-roi-menu-next-gen > div:last-child > div:last-child {\n  border-bottom-width: 0;\n  border-bottom-color: transparent;\n}\n\n.igv-roi-placeholder {\n  font-style: normal;\n  color: rgba(75, 75, 75, 0.6);\n}\n\n.igv-roi-table {\n  position: absolute;\n  z-index: 1024;\n  width: min-content;\n  max-width: 1600px;\n  border-color: #7f7f7f;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: "Open Sans", sans-serif;\n  font-size: 12px;\n  font-weight: 400;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n  cursor: default;\n}\n.igv-roi-table > div {\n  height: 24px;\n  font-size: 14px;\n  text-align: start;\n  vertical-align: middle;\n  line-height: 24px;\n}\n.igv-roi-table > div:first-child {\n  border-color: transparent;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-top-width: 0;\n  border-bottom-color: #7f7f7f;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n  cursor: move;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n}\n.igv-roi-table > div:first-child > div:first-child {\n  text-align: center;\n  white-space: nowrap;\n  text-overflow: ellipsis;\n  overflow: hidden;\n  margin-left: 4px;\n  margin-right: 4px;\n  width: calc(100% - 4px - 12px);\n}\n.igv-roi-table > div:first-child > div:last-child {\n  margin-right: 4px;\n  margin-bottom: 2px;\n  height: 12px;\n  width: 12px;\n  color: #7f7f7f;\n}\n.igv-roi-table > div:first-child > div:last-child > svg {\n  display: block;\n}\n.igv-roi-table > div:first-child > div:last-child:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-roi-table > .igv-roi-table-description {\n  padding: 4px;\n  margin-left: 4px;\n  word-break: break-all;\n  overflow-y: auto;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  background-color: transparent;\n}\n.igv-roi-table > .igv-roi-table-goto-explainer {\n  margin-top: 5px;\n  margin-left: 4px;\n  color: #7F7F7F;\n  font-style: italic;\n  height: 24px;\n  border-top: solid lightgray;\n  background-color: transparent;\n}\n.igv-roi-table > .igv-roi-table-column-titles {\n  height: 24px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: stretch;\n  align-items: stretch;\n  padding-right: 16px;\n  background-color: white;\n  border-top-color: #7f7f7f;\n  border-top-style: solid;\n  border-top-width: thin;\n  border-bottom-color: #7f7f7f;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-roi-table > .igv-roi-table-column-titles > div {\n  font-size: 14px;\n  vertical-align: middle;\n  line-height: 24px;\n  text-align: left;\n  margin-left: 4px;\n  height: 24px;\n  overflow: hidden;\n  text-overflow: ellipsis;\n  border-right-color: #7f7f7f;\n  border-right-style: solid;\n  border-right-width: thin;\n}\n.igv-roi-table > .igv-roi-table-column-titles > div:last-child {\n  border-right: unset;\n}\n.igv-roi-table > .igv-roi-table-row-container {\n  overflow: auto;\n  resize: both;\n  max-width: 1600px;\n  height: 360px;\n  background-color: transparent;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n}\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row {\n  height: 24px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: stretch;\n  align-items: stretch;\n}\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row > div {\n  font-size: 14px;\n  vertical-align: middle;\n  line-height: 24px;\n  text-align: left;\n  margin-left: 4px;\n  height: 24px;\n  white-space: nowrap;\n  overflow: hidden;\n  text-overflow: ellipsis;\n  border-right-color: transparent;\n  border-right-style: solid;\n  border-right-width: thin;\n}\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row > div:last-child {\n  border-right: unset;\n}\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row-hover {\n  background-color: rgba(0, 0, 0, 0.04);\n}\n.igv-roi-table > div:last-child {\n  height: 32px;\n  line-height: 32px;\n  border-top-color: #7f7f7f;\n  border-top-style: solid;\n  border-top-width: thin;\n  border-bottom-color: transparent;\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n  border-bottom-width: 0;\n  background-color: #eee;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n\n.igv-roi-table-row-selected {\n  background-color: rgba(0, 0, 0, 0.125);\n}\n\n.igv-roi-table-button {\n  cursor: pointer;\n  height: 20px;\n  user-select: none;\n  line-height: 20px;\n  text-align: center;\n  vertical-align: middle;\n  font-family: "Open Sans", sans-serif;\n  font-size: 13px;\n  font-weight: 400;\n  color: black;\n  padding-left: 6px;\n  padding-right: 6px;\n  background-color: rgb(239, 239, 239);\n  border-color: black;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 3px;\n}\n\n.igv-roi-table-button:hover {\n  font-weight: 400;\n  background-color: rgba(0, 0, 0, 0.13);\n}\n\n.igv-roi-region {\n  z-index: 64;\n  position: absolute;\n  top: 0;\n  bottom: 0;\n  pointer-events: none;\n  overflow: visible;\n  margin-top: 44px;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n}\n.igv-roi-region > div {\n  position: relative;\n  width: 100%;\n  height: 8px;\n  pointer-events: auto;\n}\n\n.igv-roi-menu {\n  position: absolute;\n  z-index: 1024;\n  width: 144px;\n  border-color: #7f7f7f;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: "Open Sans", sans-serif;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n}\n.igv-roi-menu > div:not(:last-child) {\n  border-bottom-color: rgba(128, 128, 128, 0.5);\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-roi-menu > div:first-child {\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-top-color: transparent;\n  border-top-style: solid;\n  border-top-width: 0;\n}\n.igv-roi-menu > div:last-child {\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n  border-bottom-color: transparent;\n  border-bottom-style: solid;\n  border-bottom-width: 0;\n}\n\n.igv-roi-menu-row {\n  height: 24px;\n  padding-left: 8px;\n  font-size: small;\n  text-align: start;\n  vertical-align: middle;\n  line-height: 24px;\n  background-color: white;\n}\n\n.igv-roi-menu-row-edit-description {\n  width: -webkit-fill-available;\n  font-size: small;\n  text-align: start;\n  vertical-align: middle;\n  background-color: white;\n  padding-left: 4px;\n  padding-right: 4px;\n  padding-bottom: 4px;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: stretch;\n  align-items: stretch;\n}\n.igv-roi-menu-row-edit-description > label {\n  margin-left: 2px;\n  margin-bottom: 0;\n  display: block;\n  width: -webkit-fill-available;\n}\n.igv-roi-menu-row-edit-description > input {\n  display: block;\n  margin-left: 2px;\n  margin-right: 2px;\n  margin-bottom: 1px;\n  width: -webkit-fill-available;\n}\n\n.igv-container {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  padding-top: 4px;\n  user-select: none;\n  -webkit-user-select: none;\n  -ms-user-select: none;\n}\n\n.igv-viewport {\n  position: relative;\n  margin-top: 5px;\n  line-height: 1;\n  overflow-x: hidden;\n  overflow-y: hidden;\n}\n\n.igv-viewport-content {\n  position: relative;\n  width: 100%;\n}\n.igv-viewport-content > canvas {\n  position: relative;\n  display: block;\n}\n\n.igv-column-container {\n  position: relative;\n  display: flex;\n  flex-direction: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n  width: 100%;\n}\n\n.igv-column-shim {\n  width: 1px;\n  margin-left: 2px;\n  margin-right: 2px;\n  background-color: #545453;\n}\n\n.igv-column {\n  position: relative;\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n}\n\n.igv-axis-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n  width: 50px;\n}\n.igv-axis-column > div {\n  margin-top: 5px;\n  width: 100%;\n}\n\n.igv-sample-name-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n}\n\n.igv-scrollbar-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n  width: 14px;\n}\n.igv-scrollbar-column > div {\n  position: relative;\n  margin-top: 5px;\n  width: 14px;\n}\n.igv-scrollbar-column > div > div {\n  cursor: pointer;\n  position: absolute;\n  top: 0;\n  left: 2px;\n  width: 8px;\n  border-width: 1px;\n  border-style: solid;\n  border-color: #c4c4c4;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n}\n.igv-scrollbar-column > div > div:hover {\n  background-color: #c4c4c4;\n}\n\n.igv-track-drag-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n  width: 12px;\n  background-color: white;\n}\n.igv-track-drag-column > .igv-track-drag-handle {\n  z-index: 512;\n  position: relative;\n  cursor: pointer;\n  margin-top: 5px;\n  width: 100%;\n  border-style: solid;\n  border-width: 0;\n  border-top-right-radius: 6px;\n  border-bottom-right-radius: 6px;\n  background-color: #c4c4c4;\n}\n.igv-track-drag-column .igv-track-drag-handle-hover {\n  background-color: #787878;\n}\n.igv-track-drag-column > .igv-track-drag-shim {\n  position: relative;\n  margin-top: 5px;\n  width: 100%;\n  border-style: solid;\n  border-width: 0;\n}\n\n.igv-gear-menu-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n  width: 28px;\n}\n.igv-gear-menu-column > div {\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n  margin-top: 5px;\n  width: 100%;\n  background: white;\n}\n.igv-gear-menu-column > div > div {\n  position: relative;\n  margin-top: 4px;\n  width: 16px;\n  height: 16px;\n  color: #7F7F7F;\n}\n.igv-gear-menu-column > div > div:hover {\n  cursor: pointer;\n  color: #444;\n}\n\n/*# sourceMappingURL=dom.css.map */\n',document.head.append(e)}();const zw=ta.oauth;var Hw={TrackUtils:$a,IGVGraphics:ya,MenuUtils:Ui,DataRangeDialog:ji,createTrack:async function(e,t){return await Iw.prototype.createTrack.call(t,e)},createBrowser:async function(e,t){void 0===t&&(t={}),Ml.KNOWN_GENOMES||await Ml.initializeGenomes(t),function(e){void 0===e.minimumBases&&(e.minimumBases=40);void 0===e.showIdeogram&&(e.showIdeogram=!0);void 0===e.showCircularView&&(e.showCircularView=!1);void 0===e.showCircularViewButton&&(e.showCircularViewButton=!1);void 0===e.showTrackLabelButton&&(e.showTrackLabelButton=!0);void 0===e.showTrackLabels&&(e.showTrackLabels=!0);void 0===e.showROITableButton&&(e.showROITableButton=!1);void 0===e.showROITable&&(e.showROITable=!1);void 0===e.showCursorTrackingGuideButton&&(e.showCursorTrackingGuideButton=!0);void 0===e.showCursorGuide&&(e.showCursorGuide=e.showCursorTrackingGuide||!1);void 0===e.showCenterGuideButton&&(e.showCenterGuideButton=!0);void 0===e.showCenterGuide&&(e.showCenterGuide=!1);void 0===e.showSampleNames&&(e.showSampleNames=!1);void 0===e.showSVGButton&&(e.showSVGButton=!0);void 0===e.showControls&&(e.showControls=!0);void 0===e.showNavigation&&(e.showNavigation=!0);void 0===e.showRuler&&(e.showRuler=!0);void 0===e.flanking&&(e.flanking=1e3);void 0===e.pairsSupported&&(e.pairsSupported=!0);e.tracks||(e.tracks=[])}(t),t.queryParametersSupported&&function(e){var t,i,n,r,s,o,a,l,h;let c,d,u;if(a=window.location.href,s={},t=a.indexOf("?"),i=a.lastIndexOf("#"),t>=0)for(i<0&&(i=a.length),n=t+1;n<i;)(r=a.indexOf("&",n))<0&&(r=i),2===(o=a.substring(n,r).split("=",2)).length?(l=o[0],h=decodeURIComponent(o[1]),"file"===l?c=h.split(","):"index"===l?d=h.split(","):"name"===l?u=h.split(","):"genome"!==l||!h.startsWith("https://")&&!h.startsWith("http://")||h.endsWith(".json")?e[l]=h:e.reference={fastaURL:h,indexURL:h+".fai"},n=r+1):n++;if(c){e.tracks||(e.tracks=[]);for(let t=0;t<c.length;t++){if(c[t].endsWith(".xml")||c[t].endsWith(".json")){e.sessionURL=c[t];break}const i={url:c[t]};d&&d.length>t&&(i.indexURL=d[t]),u&&u.length>t&&(i.name=u[t]),e.tracks.push(i)}}}(t),t.apiKey&&ta.setApiKey(t.apiKey),t.oauthToken&&ta.setOauthToken(t.oauthToken),t.clientId&&!Go()&&await async function(e){if(!google.accounts.oauth2.initTokenClient)throw new Error("Google accounts token client not loaded (https://accounts.google.com/gsi/client)");if(Go())throw new Error("Google client is already initialized");const t={client_id:e.client_id,scope:e.scope||"https://www.googleapis.com/auth/userinfo.profile",state:e.state||"igv",error:e=>{throw new Error(e.type)},hint:e.hint,hosted_domain:e.hosted_domain},i=google.accounts.oauth2.initTokenClient(t);google.igv={tokenClient:i,apiKey:e.apiKey}}({clientId:t.clientId,apiKey:t.apiKey,scope:"https://www.googleapis.com/auth/userinfo.profile"});const i=new Iw(t,e);return Dw.push(i),t.sessionURL?await i.loadSession({url:t.sessionURL}):await i.loadSessionObject(t),i.navbarManager.navbarDidResize(i.$navigation.width()),i},removeBrowser:function(e){e.dispose(),e.root.remove(),Dw=Dw.filter((t=>t!==e))},removeAllBrowsers:function(){for(let e of Dw)e.dispose(),e.root.remove();Dw=[]},visibilityChange:async function(){for(let e of Dw)await e.visibilityChange()},setGoogleOauthToken:function(e){return ta.setOauthToken(e)},setOauthToken:function(e,t){return ta.setOauthToken(e,t)},oauth:zw,version:El,setApiKey:Pw,registerFileFormats:ja};export{Hw as default};
+//# sourceMappingURL=igv.esm.min.js.map
diff --git a/igv_component/node_modules/igv/dist/igv.esm.min.js.map b/igv_component/node_modules/igv/dist/igv.esm.min.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..0c2f0aa624ffa1ce8415d5eee7e5b39f84228c51
--- /dev/null
+++ b/igv_component/node_modules/igv/dist/igv.esm.min.js.map
@@ -0,0 +1 @@
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* jQuery JavaScript Library v3.3.1 -ajax,-ajax/jsonp,-ajax/load,-ajax/parseXML,-ajax/script,-ajax/var/location,-ajax/var/nonce,-ajax/var/rquery,-ajax/xhr,-manipulation/_evalUrl,-event/ajax,-effects,-effects/Tween,-effects/animatedSelector\n * https://jquery.com/\n *\n * Includes Sizzle.js\n * https://sizzlejs.com/\n *\n * Copyright JS Foundation and other contributors\n * Released under the MIT license\n * https://jquery.org/license\n *\n * Date: 2018-01-20T17:24Z\n */\n// Modified for encapsulation in igv module\n// * no exports\n// * no global definition\n// * noConflict not supported (as _ is encapsulated its not needed)\n\n// Edge <= 12 - 13+, Firefox <=18 - 45+, IE 10 - 11, Safari 5.1 - 9+, iOS 6 - 9.1\n// throw exceptions when non-strict code (e.g., ASP.NET 4.5) accesses strict mode\n// arguments.callee.caller (trac-13335). But as of jQuery 3.0 (2016), strict mode should be common\n// enough that all such attempts are guarded in a try block.\n\"use strict\";\n\nvar arr = [];\n\nvar document = window.document;\n\nvar getProto = Object.getPrototypeOf;\n\nvar slice = arr.slice;\n\nvar concat = arr.concat;\n\nvar push = arr.push;\n\nvar indexOf = arr.indexOf;\n\nvar class2type = {};\n\nvar toString = class2type.toString;\n\nvar hasOwn = class2type.hasOwnProperty;\n\nvar fnToString = hasOwn.toString;\n\nvar ObjectFunctionString = fnToString.call(Object);\n\nvar support = {};\n\nvar isFunction = function isFunction(obj) {\n\n    // Support: Chrome <=57, Firefox <=52\n    // In some browsers, typeof returns \"function\" for HTML <object> elements\n    // (i.e., `typeof document.createElement( \"object\" ) === \"function\"`).\n    // We don't want to classify *any* DOM node as a function.\n    return typeof obj === \"function\" && typeof obj.nodeType !== \"number\";\n};\n\n\nvar isWindow = function isWindow(obj) {\n    return obj != null && obj === obj.window;\n};\n\n\nvar preservedScriptAttributes = {\n    type: true,\n    src: true,\n    noModule: true\n};\n\nfunction DOMEval(code, doc, node) {\n    doc = doc || document;\n\n    var i,\n        script = doc.createElement(\"script\");\n\n    script.text = code;\n    if (node) {\n        for (i in preservedScriptAttributes) {\n            if (node[i]) {\n                script[i] = node[i];\n            }\n        }\n    }\n    doc.head.appendChild(script).parentNode.removeChild(script);\n}\n\n\nfunction toType(obj) {\n    if (obj == null) {\n        return obj + \"\";\n    }\n\n    // Support: Android <=2.3 only (functionish RegExp)\n    return typeof obj === \"object\" || typeof obj === \"function\" ?\n        class2type[toString.call(obj)] || \"object\" :\n        typeof obj;\n}\n\n// global Symbol\n// Defining this global in .eslintrc.json would create a danger of using the global\n// unguarded in another place, it seems safer to define global only for this module\n\n\nvar\n    version = \"3.3.1 -ajax,-ajax/jsonp,-ajax/load,-ajax/parseXML,-ajax/script,-ajax/var/location,-ajax/var/nonce,-ajax/var/rquery,-ajax/xhr,-manipulation/_evalUrl,-event/ajax,-effects,-effects/Tween,-effects/animatedSelector\",\n\n    // Define a local copy of jQuery\n    jQuery = function (selector, context) {\n\n        // The jQuery object is actually just the init constructor 'enhanced'\n        // Need init if jQuery is called (just allow error to be thrown if not included)\n        return new jQuery.fn.init(selector, context);\n    },\n\n    // Support: Android <=4.0 only\n    // Make sure we trim BOM and NBSP\n    rtrim = /^[\\s\\uFEFF\\xA0]+|[\\s\\uFEFF\\xA0]+$/g;\n\njQuery.fn = jQuery.prototype = {\n\n    // The current version of jQuery being used\n    jquery: version,\n\n    constructor: jQuery,\n\n    // The default length of a jQuery object is 0\n    length: 0,\n\n    toArray: function () {\n        return slice.call(this);\n    },\n\n    // Get the Nth element in the matched element set OR\n    // Get the whole matched element set as a clean array\n    get: function (num) {\n\n        // Return all the elements in a clean array\n        if (num == null) {\n            return slice.call(this);\n        }\n\n        // Return just the one element from the set\n        return num < 0 ? this[num + this.length] : this[num];\n    },\n\n    // Take an array of elements and push it onto the stack\n    // (returning the new matched element set)\n    pushStack: function (elems) {\n\n        // Build a new jQuery matched element set\n        var ret = jQuery.merge(this.constructor(), elems);\n\n        // Add the old object onto the stack (as a reference)\n        ret.prevObject = this;\n\n        // Return the newly-formed element set\n        return ret;\n    },\n\n    // Execute a callback for every element in the matched set.\n    each: function (callback) {\n        return jQuery.each(this, callback);\n    },\n\n    map: function (callback) {\n        return this.pushStack(jQuery.map(this, function (elem, i) {\n            return callback.call(elem, i, elem);\n        }));\n    },\n\n    slice: function () {\n        return this.pushStack(slice.apply(this, arguments));\n    },\n\n    first: function () {\n        return this.eq(0);\n    },\n\n    last: function () {\n        return this.eq(-1);\n    },\n\n    eq: function (i) {\n        var len = this.length,\n            j = +i + (i < 0 ? len : 0);\n        return this.pushStack(j >= 0 && j < len ? [this[j]] : []);\n    },\n\n    end: function () {\n        return this.prevObject || this.constructor();\n    },\n\n    // For internal use only.\n    // Behaves like an Array's method, not like a jQuery method.\n    push: push,\n    sort: arr.sort,\n    splice: arr.splice\n};\n\njQuery.extend = jQuery.fn.extend = function () {\n    var options, name, src, copy, copyIsArray, clone,\n        target = arguments[0] || {},\n        i = 1,\n        length = arguments.length,\n        deep = false;\n\n    // Handle a deep copy situation\n    if (typeof target === \"boolean\") {\n        deep = target;\n\n        // Skip the boolean and the target\n        target = arguments[i] || {};\n        i++;\n    }\n\n    // Handle case when target is a string or something (possible in deep copy)\n    if (typeof target !== \"object\" && !isFunction(target)) {\n        target = {};\n    }\n\n    // Extend jQuery itself if only one argument is passed\n    if (i === length) {\n        target = this;\n        i--;\n    }\n\n    for (; i < length; i++) {\n\n        // Only deal with non-null/undefined values\n        if ((options = arguments[i]) != null) {\n\n            // Extend the base object\n            for (name in options) {\n                src = target[name];\n                copy = options[name];\n\n                // Prevent never-ending loop\n                if (target === copy) {\n                    continue;\n                }\n\n                // Recurse if we're merging plain objects or arrays\n                if (deep && copy && (jQuery.isPlainObject(copy) ||\n                    (copyIsArray = Array.isArray(copy)))) {\n\n                    if (copyIsArray) {\n                        copyIsArray = false;\n                        clone = src && Array.isArray(src) ? src : [];\n\n                    } else {\n                        clone = src && jQuery.isPlainObject(src) ? src : {};\n                    }\n\n                    // Never move original objects, clone them\n                    target[name] = jQuery.extend(deep, clone, copy);\n\n                    // Don't bring in undefined values\n                } else if (copy !== undefined) {\n                    target[name] = copy;\n                }\n            }\n        }\n    }\n\n    // Return the modified object\n    return target;\n};\n\njQuery.extend({\n\n    // Unique for each copy of jQuery on the page\n    expando: \"jQuery\" + (version + Math.random()).replace(/\\D/g, \"\"),\n\n    // Assume jQuery is ready without the ready module\n    isReady: true,\n\n    error: function (msg) {\n        throw new Error(msg);\n    },\n\n    noop: function () {\n    },\n\n    isPlainObject: function (obj) {\n        var proto, Ctor;\n\n        // Detect obvious negatives\n        // Use toString instead of jQuery.type to catch host objects\n        if (!obj || toString.call(obj) !== \"[object Object]\") {\n            return false;\n        }\n\n        proto = getProto(obj);\n\n        // Objects with no prototype (e.g., `Object.create( null )`) are plain\n        if (!proto) {\n            return true;\n        }\n\n        // Objects with prototype are plain iff they were constructed by a global Object function\n        Ctor = hasOwn.call(proto, \"constructor\") && proto.constructor;\n        return typeof Ctor === \"function\" && fnToString.call(Ctor) === ObjectFunctionString;\n    },\n\n    isEmptyObject: function (obj) {\n\n        /* eslint-disable no-unused-vars */\n        // See https://github.com/eslint/eslint/issues/6125\n        var name;\n\n        for (name in obj) {\n            return false;\n        }\n        return true;\n    },\n\n    // Evaluates a script in a global context\n    globalEval: function (code) {\n        DOMEval(code);\n    },\n\n    each: function (obj, callback) {\n        var length, i = 0;\n\n        if (isArrayLike(obj)) {\n            length = obj.length;\n            for (; i < length; i++) {\n                if (callback.call(obj[i], i, obj[i]) === false) {\n                    break;\n                }\n            }\n        } else {\n            for (i in obj) {\n                if (callback.call(obj[i], i, obj[i]) === false) {\n                    break;\n                }\n            }\n        }\n\n        return obj;\n    },\n\n    // Support: Android <=4.0 only\n    trim: function (text) {\n        return text == null ?\n            \"\" :\n            (text + \"\").replace(rtrim, \"\");\n    },\n\n    // results is for internal usage only\n    makeArray: function (arr, results) {\n        var ret = results || [];\n\n        if (arr != null) {\n            if (isArrayLike(Object(arr))) {\n                jQuery.merge(ret,\n                    typeof arr === \"string\" ?\n                        [arr] : arr\n                );\n            } else {\n                push.call(ret, arr);\n            }\n        }\n\n        return ret;\n    },\n\n    inArray: function (elem, arr, i) {\n        return arr == null ? -1 : indexOf.call(arr, elem, i);\n    },\n\n    // Support: Android <=4.0 only, PhantomJS 1 only\n    // push.apply(_, arraylike) throws on ancient WebKit\n    merge: function (first, second) {\n        var len = +second.length,\n            j = 0,\n            i = first.length;\n\n        for (; j < len; j++) {\n            first[i++] = second[j];\n        }\n\n        first.length = i;\n\n        return first;\n    },\n\n    grep: function (elems, callback, invert) {\n        var callbackInverse,\n            matches = [],\n            i = 0,\n            length = elems.length,\n            callbackExpect = !invert;\n\n        // Go through the array, only saving the items\n        // that pass the validator function\n        for (; i < length; i++) {\n            callbackInverse = !callback(elems[i], i);\n            if (callbackInverse !== callbackExpect) {\n                matches.push(elems[i]);\n            }\n        }\n\n        return matches;\n    },\n\n    // arg is for internal usage only\n    map: function (elems, callback, arg) {\n        var length, value,\n            i = 0,\n            ret = [];\n\n        // Go through the array, translating each of the items to their new values\n        if (isArrayLike(elems)) {\n            length = elems.length;\n            for (; i < length; i++) {\n                value = callback(elems[i], i, arg);\n\n                if (value != null) {\n                    ret.push(value);\n                }\n            }\n\n            // Go through every key on the object,\n        } else {\n            for (i in elems) {\n                value = callback(elems[i], i, arg);\n\n                if (value != null) {\n                    ret.push(value);\n                }\n            }\n        }\n\n        // Flatten any nested arrays\n        return concat.apply([], ret);\n    },\n\n    // A global GUID counter for objects\n    guid: 1,\n\n    // jQuery.support is not used in Core but other projects attach their\n    // properties to it so it needs to exist.\n    support: support\n});\n\nif (typeof Symbol === \"function\") {\n    jQuery.fn[Symbol.iterator] = arr[Symbol.iterator];\n}\n\n// Populate the class2type map\njQuery.each(\"Boolean Number String Function Array Date RegExp Object Error Symbol\".split(\" \"),\n    function (i, name) {\n        class2type[\"[object \" + name + \"]\"] = name.toLowerCase();\n    });\n\nfunction isArrayLike(obj) {\n\n    // Support: real iOS 8.2 only (not reproducible in simulator)\n    // `in` check used to prevent JIT error (gh-2145)\n    // hasOwn isn't used here due to false negatives\n    // regarding Nodelist length in IE\n    var length = !!obj && \"length\" in obj && obj.length,\n        type = toType(obj);\n\n    if (isFunction(obj) || isWindow(obj)) {\n        return false;\n    }\n\n    return type === \"array\" || length === 0 ||\n        typeof length === \"number\" && length > 0 && (length - 1) in obj;\n}\n\nvar Sizzle =\n    /*!\n * Sizzle CSS Selector Engine v2.3.3\n * https://sizzlejs.com/\n *\n * Copyright jQuery Foundation and other contributors\n * Released under the MIT license\n * http://jquery.org/license\n *\n * Date: 2016-08-08\n */\n    (function (window) {\n\n        var i,\n            support,\n            Expr,\n            getText,\n            isXML,\n            tokenize,\n            compile,\n            select,\n            outermostContext,\n            sortInput,\n            hasDuplicate,\n\n            // Local document vars\n            setDocument,\n            document,\n            docElem,\n            documentIsHTML,\n            rbuggyQSA,\n            rbuggyMatches,\n            matches,\n            contains,\n\n            // Instance-specific data\n            expando = \"sizzle\" + 1 * new Date(),\n            preferredDoc = window.document,\n            dirruns = 0,\n            done = 0,\n            classCache = createCache(),\n            tokenCache = createCache(),\n            compilerCache = createCache(),\n            sortOrder = function (a, b) {\n                if (a === b) {\n                    hasDuplicate = true;\n                }\n                return 0;\n            },\n\n            // Instance methods\n            hasOwn = ({}).hasOwnProperty,\n            arr = [],\n            pop = arr.pop,\n            push_native = arr.push,\n            push = arr.push,\n            slice = arr.slice,\n            // Use a stripped-down indexOf as it's faster than native\n            // https://jsperf.com/thor-indexof-vs-for/5\n            indexOf = function (list, elem) {\n                var i = 0,\n                    len = list.length;\n                for (; i < len; i++) {\n                    if (list[i] === elem) {\n                        return i;\n                    }\n                }\n                return -1;\n            },\n\n            booleans = \"checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped\",\n\n            // Regular expressions\n\n            // http://www.w3.org/TR/css3-selectors/#whitespace\n            whitespace = \"[\\\\x20\\\\t\\\\r\\\\n\\\\f]\",\n\n            // http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier\n            identifier = \"(?:\\\\\\\\.|[\\\\w-]|[^\\0-\\\\xa0])+\",\n\n            // Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors\n            attributes = \"\\\\[\" + whitespace + \"*(\" + identifier + \")(?:\" + whitespace +\n                // Operator (capture 2)\n                \"*([*^$|!~]?=)\" + whitespace +\n                // \"Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]\"\n                \"*(?:'((?:\\\\\\\\.|[^\\\\\\\\'])*)'|\\\"((?:\\\\\\\\.|[^\\\\\\\\\\\"])*)\\\"|(\" + identifier + \"))|)\" + whitespace +\n                \"*\\\\]\",\n\n            pseudos = \":(\" + identifier + \")(?:\\\\((\" +\n                // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:\n                // 1. quoted (capture 3; capture 4 or capture 5)\n                \"('((?:\\\\\\\\.|[^\\\\\\\\'])*)'|\\\"((?:\\\\\\\\.|[^\\\\\\\\\\\"])*)\\\")|\" +\n                // 2. simple (capture 6)\n                \"((?:\\\\\\\\.|[^\\\\\\\\()[\\\\]]|\" + attributes + \")*)|\" +\n                // 3. anything else (capture 2)\n                \".*\" +\n                \")\\\\)|)\",\n\n            // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter\n            rwhitespace = new RegExp(whitespace + \"+\", \"g\"),\n            rtrim = new RegExp(\"^\" + whitespace + \"+|((?:^|[^\\\\\\\\])(?:\\\\\\\\.)*)\" + whitespace + \"+$\", \"g\"),\n\n            rcomma = new RegExp(\"^\" + whitespace + \"*,\" + whitespace + \"*\"),\n            rcombinators = new RegExp(\"^\" + whitespace + \"*([>+~]|\" + whitespace + \")\" + whitespace + \"*\"),\n\n            rattributeQuotes = new RegExp(\"=\" + whitespace + \"*([^\\\\]'\\\"]*?)\" + whitespace + \"*\\\\]\", \"g\"),\n\n            rpseudo = new RegExp(pseudos),\n            ridentifier = new RegExp(\"^\" + identifier + \"$\"),\n\n            matchExpr = {\n                \"ID\": new RegExp(\"^#(\" + identifier + \")\"),\n                \"CLASS\": new RegExp(\"^\\\\.(\" + identifier + \")\"),\n                \"TAG\": new RegExp(\"^(\" + identifier + \"|[*])\"),\n                \"ATTR\": new RegExp(\"^\" + attributes),\n                \"PSEUDO\": new RegExp(\"^\" + pseudos),\n                \"CHILD\": new RegExp(\"^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\\\(\" + whitespace +\n                    \"*(even|odd|(([+-]|)(\\\\d*)n|)\" + whitespace + \"*(?:([+-]|)\" + whitespace +\n                    \"*(\\\\d+)|))\" + whitespace + \"*\\\\)|)\", \"i\"),\n                \"bool\": new RegExp(\"^(?:\" + booleans + \")$\", \"i\"),\n                // For use in libraries implementing .is()\n                // We use this for POS matching in `select`\n                \"needsContext\": new RegExp(\"^\" + whitespace + \"*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\\\(\" +\n                    whitespace + \"*((?:-\\\\d)?\\\\d*)\" + whitespace + \"*\\\\)|)(?=[^-]|$)\", \"i\")\n            },\n\n            rinputs = /^(?:input|select|textarea|button)$/i,\n            rheader = /^h\\d$/i,\n\n            rnative = /^[^{]+\\{\\s*\\[native \\w/,\n\n            // Easily-parseable/retrievable ID or TAG or CLASS selectors\n            rquickExpr = /^(?:#([\\w-]+)|(\\w+)|\\.([\\w-]+))$/,\n\n            rsibling = /[+~]/,\n\n            // CSS escapes\n            // http://www.w3.org/TR/CSS21/syndata.html#escaped-characters\n            runescape = new RegExp(\"\\\\\\\\([\\\\da-f]{1,6}\" + whitespace + \"?|(\" + whitespace + \")|.)\", \"ig\"),\n            funescape = function (_, escaped, escapedWhitespace) {\n                var high = \"0x\" + escaped - 0x10000;\n                // NaN means non-codepoint\n                // Support: Firefox<24\n                // Workaround erroneous numeric interpretation of +\"0x\"\n                return high !== high || escapedWhitespace ?\n                    escaped :\n                    high < 0 ?\n                        // BMP codepoint\n                        String.fromCharCode(high + 0x10000) :\n                        // Supplemental Plane codepoint (surrogate pair)\n                        String.fromCharCode(high >> 10 | 0xD800, high & 0x3FF | 0xDC00);\n            },\n\n            // CSS string/identifier serialization\n            // https://drafts.csswg.org/cssom/#common-serializing-idioms\n            // eslint-disable-next-line no-control-regex\n            rcssescape = /([\\0-\\x1f\\x7f]|^-?\\d)|^-$|[^\\0-\\x1f\\x7f-\\uFFFF\\w-]/g,\n            fcssescape = function (ch, asCodePoint) {\n                if (asCodePoint) {\n\n                    // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER\n                    if (ch === \"\\0\") {\n                        return \"\\uFFFD\";\n                    }\n\n                    // Control characters and (dependent upon position) numbers get escaped as code points\n                    return ch.slice(0, -1) + \"\\\\\" + ch.charCodeAt(ch.length - 1).toString(16) + \" \";\n                }\n\n                // Other potentially-special ASCII characters get backslash-escaped\n                return \"\\\\\" + ch;\n            },\n\n            // Used for iframes\n            // See setDocument()\n            // Removing the function wrapper causes a \"Permission Denied\"\n            // error in IE\n            unloadHandler = function () {\n                setDocument();\n            },\n\n            disabledAncestor = addCombinator(\n                function (elem) {\n                    return elem.disabled === true && (\"form\" in elem || \"label\" in elem);\n                },\n                {dir: \"parentNode\", next: \"legend\"}\n            );\n\n// Optimize for push.apply( _, NodeList )\n        try {\n            push.apply(\n                (arr = slice.call(preferredDoc.childNodes)),\n                preferredDoc.childNodes\n            );\n            // Support: Android<4.0\n            // Detect silently failing push.apply\n            arr[preferredDoc.childNodes.length].nodeType;\n        } catch (e) {\n            push = {\n                apply: arr.length ?\n\n                    // Leverage slice if possible\n                    function (target, els) {\n                        push_native.apply(target, slice.call(els));\n                    } :\n\n                    // Support: IE<9\n                    // Otherwise append directly\n                    function (target, els) {\n                        var j = target.length,\n                            i = 0;\n                        // Can't trust NodeList.length\n                        while ((target[j++] = els[i++])) {\n                        }\n                        target.length = j - 1;\n                    }\n            };\n        }\n\n        function Sizzle(selector, context, results, seed) {\n            var m, i, elem, nid, match, groups, newSelector,\n                newContext = context && context.ownerDocument,\n\n                // nodeType defaults to 9, since context defaults to document\n                nodeType = context ? context.nodeType : 9;\n\n            results = results || [];\n\n            // Return early from calls with invalid selector or context\n            if (typeof selector !== \"string\" || !selector ||\n                nodeType !== 1 && nodeType !== 9 && nodeType !== 11) {\n\n                return results;\n            }\n\n            // Try to shortcut find operations (as opposed to filters) in HTML documents\n            if (!seed) {\n\n                if ((context ? context.ownerDocument || context : preferredDoc) !== document) {\n                    setDocument(context);\n                }\n                context = context || document;\n\n                if (documentIsHTML) {\n\n                    // If the selector is sufficiently simple, try using a \"get*By*\" DOM method\n                    // (excepting DocumentFragment context, where the methods don't exist)\n                    if (nodeType !== 11 && (match = rquickExpr.exec(selector))) {\n\n                        // ID selector\n                        if ((m = match[1])) {\n\n                            // Document context\n                            if (nodeType === 9) {\n                                if ((elem = context.getElementById(m))) {\n\n                                    // Support: IE, Opera, Webkit\n                                    // TODO: identify versions\n                                    // getElementById can match elements by name instead of ID\n                                    if (elem.id === m) {\n                                        results.push(elem);\n                                        return results;\n                                    }\n                                } else {\n                                    return results;\n                                }\n\n                                // Element context\n                            } else {\n\n                                // Support: IE, Opera, Webkit\n                                // TODO: identify versions\n                                // getElementById can match elements by name instead of ID\n                                if (newContext && (elem = newContext.getElementById(m)) &&\n                                    contains(context, elem) &&\n                                    elem.id === m) {\n\n                                    results.push(elem);\n                                    return results;\n                                }\n                            }\n\n                            // Type selector\n                        } else if (match[2]) {\n                            push.apply(results, context.getElementsByTagName(selector));\n                            return results;\n\n                            // Class selector\n                        } else if ((m = match[3]) && support.getElementsByClassName &&\n                            context.getElementsByClassName) {\n\n                            push.apply(results, context.getElementsByClassName(m));\n                            return results;\n                        }\n                    }\n\n                    // Take advantage of querySelectorAll\n                    if (support.qsa &&\n                        !compilerCache[selector + \" \"] &&\n                        (!rbuggyQSA || !rbuggyQSA.test(selector))) {\n\n                        if (nodeType !== 1) {\n                            newContext = context;\n                            newSelector = selector;\n\n                            // qSA looks outside Element context, which is not what we want\n                            // Thanks to Andrew Dupont for this workaround technique\n                            // Support: IE <=8\n                            // Exclude object elements\n                        } else if (context.nodeName.toLowerCase() !== \"object\") {\n\n                            // Capture the context ID, setting it first if necessary\n                            if ((nid = context.getAttribute(\"id\"))) {\n                                nid = nid.replace(rcssescape, fcssescape);\n                            } else {\n                                context.setAttribute(\"id\", (nid = expando));\n                            }\n\n                            // Prefix every selector in the list\n                            groups = tokenize(selector);\n                            i = groups.length;\n                            while (i--) {\n                                groups[i] = \"#\" + nid + \" \" + toSelector(groups[i]);\n                            }\n                            newSelector = groups.join(\",\");\n\n                            // Expand context for sibling selectors\n                            newContext = rsibling.test(selector) && testContext(context.parentNode) ||\n                                context;\n                        }\n\n                        if (newSelector) {\n                            try {\n                                push.apply(results,\n                                    newContext.querySelectorAll(newSelector)\n                                );\n                                return results;\n                            } catch (qsaError) {\n                            } finally {\n                                if (nid === expando) {\n                                    context.removeAttribute(\"id\");\n                                }\n                            }\n                        }\n                    }\n                }\n            }\n\n            // All others\n            return select(selector.replace(rtrim, \"$1\"), context, results, seed);\n        }\n\n        /**\n         * Create key-value caches of limited size\n         * @returns {function(string, object)} Returns the Object data after storing it on itself with\n         *    property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)\n         *    deleting the oldest entry\n         */\n        function createCache() {\n            var keys = [];\n\n            function cache(key, value) {\n                // Use (key + \" \") to avoid collision with native prototype properties (see Issue #157)\n                if (keys.push(key + \" \") > Expr.cacheLength) {\n                    // Only keep the most recent entries\n                    delete cache[keys.shift()];\n                }\n                return (cache[key + \" \"] = value);\n            }\n\n            return cache;\n        }\n\n        /**\n         * Mark a function for special use by Sizzle\n         * @param {Function} fn The function to mark\n         */\n        function markFunction(fn) {\n            fn[expando] = true;\n            return fn;\n        }\n\n        /**\n         * Support testing using an element\n         * @param {Function} fn Passed the created element and returns a boolean result\n         */\n        function assert(fn) {\n            var el = document.createElement(\"fieldset\");\n\n            try {\n                return !!fn(el);\n            } catch (e) {\n                return false;\n            } finally {\n                // Remove from its parent by default\n                if (el.parentNode) {\n                    el.parentNode.removeChild(el);\n                }\n                // release memory in IE\n                el = null;\n            }\n        }\n\n        /**\n         * Adds the same handler for all of the specified attrs\n         * @param {String} attrs Pipe-separated list of attributes\n         * @param {Function} handler The method that will be applied\n         */\n        function addHandle(attrs, handler) {\n            var arr = attrs.split(\"|\"),\n                i = arr.length;\n\n            while (i--) {\n                Expr.attrHandle[arr[i]] = handler;\n            }\n        }\n\n        /**\n         * Checks document order of two siblings\n         * @param {Element} a\n         * @param {Element} b\n         * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b\n         */\n        function siblingCheck(a, b) {\n            var cur = b && a,\n                diff = cur && a.nodeType === 1 && b.nodeType === 1 &&\n                    a.sourceIndex - b.sourceIndex;\n\n            // Use IE sourceIndex if available on both nodes\n            if (diff) {\n                return diff;\n            }\n\n            // Check if b follows a\n            if (cur) {\n                while ((cur = cur.nextSibling)) {\n                    if (cur === b) {\n                        return -1;\n                    }\n                }\n            }\n\n            return a ? 1 : -1;\n        }\n\n        /**\n         * Returns a function to use in pseudos for input types\n         * @param {String} type\n         */\n        function createInputPseudo(type) {\n            return function (elem) {\n                var name = elem.nodeName.toLowerCase();\n                return name === \"input\" && elem.type === type;\n            };\n        }\n\n        /**\n         * Returns a function to use in pseudos for buttons\n         * @param {String} type\n         */\n        function createButtonPseudo(type) {\n            return function (elem) {\n                var name = elem.nodeName.toLowerCase();\n                return (name === \"input\" || name === \"button\") && elem.type === type;\n            };\n        }\n\n        /**\n         * Returns a function to use in pseudos for :enabled/:disabled\n         * @param {Boolean} disabled true for :disabled; false for :enabled\n         */\n        function createDisabledPseudo(disabled) {\n\n            // Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable\n            return function (elem) {\n\n                // Only certain elements can match :enabled or :disabled\n                // https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled\n                // https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled\n                if (\"form\" in elem) {\n\n                    // Check for inherited disabledness on relevant non-disabled elements:\n                    // * listed form-associated elements in a disabled fieldset\n                    //   https://html.spec.whatwg.org/multipage/forms.html#category-listed\n                    //   https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled\n                    // * option elements in a disabled optgroup\n                    //   https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled\n                    // All such elements have a \"form\" property.\n                    if (elem.parentNode && elem.disabled === false) {\n\n                        // Option elements defer to a parent optgroup if present\n                        if (\"label\" in elem) {\n                            if (\"label\" in elem.parentNode) {\n                                return elem.parentNode.disabled === disabled;\n                            } else {\n                                return elem.disabled === disabled;\n                            }\n                        }\n\n                        // Support: IE 6 - 11\n                        // Use the isDisabled shortcut property to check for disabled fieldset ancestors\n                        return elem.isDisabled === disabled ||\n\n                            // Where there is no isDisabled, check manually\n                            /* jshint -W018 */\n                            elem.isDisabled !== !disabled &&\n                            disabledAncestor(elem) === disabled;\n                    }\n\n                    return elem.disabled === disabled;\n\n                    // Try to winnow out elements that can't be disabled before trusting the disabled property.\n                    // Some victims get caught in our net (label, legend, menu, track), but it shouldn't\n                    // even exist on them, let alone have a boolean value.\n                } else if (\"label\" in elem) {\n                    return elem.disabled === disabled;\n                }\n\n                // Remaining elements are neither :enabled nor :disabled\n                return false;\n            };\n        }\n\n        /**\n         * Returns a function to use in pseudos for positionals\n         * @param {Function} fn\n         */\n        function createPositionalPseudo(fn) {\n            return markFunction(function (argument) {\n                argument = +argument;\n                return markFunction(function (seed, matches) {\n                    var j,\n                        matchIndexes = fn([], seed.length, argument),\n                        i = matchIndexes.length;\n\n                    // Match elements found at the specified indexes\n                    while (i--) {\n                        if (seed[(j = matchIndexes[i])]) {\n                            seed[j] = !(matches[j] = seed[j]);\n                        }\n                    }\n                });\n            });\n        }\n\n        /**\n         * Checks a node for validity as a Sizzle context\n         * @param {Element|Object=} context\n         * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value\n         */\n        function testContext(context) {\n            return context && typeof context.getElementsByTagName !== \"undefined\" && context;\n        }\n\n// Expose support vars for convenience\n        support = Sizzle.support = {};\n\n        /**\n         * Detects XML nodes\n         * @param {Element|Object} elem An element or a document\n         * @returns {Boolean} True iff elem is a non-HTML XML node\n         */\n        isXML = Sizzle.isXML = function (elem) {\n            // documentElement is verified for cases where it doesn't yet exist\n            // (such as loading iframes in IE - #4833)\n            var documentElement = elem && (elem.ownerDocument || elem).documentElement;\n            return documentElement ? documentElement.nodeName !== \"HTML\" : false;\n        };\n\n        /**\n         * Sets document-related variables once based on the current document\n         * @param {Element|Object} [doc] An element or document object to use to set the document\n         * @returns {Object} Returns the current document\n         */\n        setDocument = Sizzle.setDocument = function (node) {\n            var hasCompare, subWindow,\n                doc = node ? node.ownerDocument || node : preferredDoc;\n\n            // Return early if doc is invalid or already selected\n            if (doc === document || doc.nodeType !== 9 || !doc.documentElement) {\n                return document;\n            }\n\n            // Update global variables\n            document = doc;\n            docElem = document.documentElement;\n            documentIsHTML = !isXML(document);\n\n            // Support: IE 9-11, Edge\n            // Accessing iframe documents after unload throws \"permission denied\" errors (jQuery #13936)\n            if (preferredDoc !== document &&\n                (subWindow = document.defaultView) && subWindow.top !== subWindow) {\n\n                // Support: IE 11, Edge\n                if (subWindow.addEventListener) {\n                    subWindow.addEventListener(\"unload\", unloadHandler, false);\n\n                    // Support: IE 9 - 10 only\n                } else if (subWindow.attachEvent) {\n                    subWindow.attachEvent(\"onunload\", unloadHandler);\n                }\n            }\n\n            /* Attributes\n\t---------------------------------------------------------------------- */\n\n            // Support: IE<8\n            // Verify that getAttribute really returns attributes and not properties\n            // (excepting IE8 booleans)\n            support.attributes = assert(function (el) {\n                el.className = \"i\";\n                return !el.getAttribute(\"className\");\n            });\n\n            /* getElement(s)By*\n\t---------------------------------------------------------------------- */\n\n            // Check if getElementsByTagName(\"*\") returns only elements\n            support.getElementsByTagName = assert(function (el) {\n                el.appendChild(document.createComment(\"\"));\n                return !el.getElementsByTagName(\"*\").length;\n            });\n\n            // Support: IE<9\n            support.getElementsByClassName = rnative.test(document.getElementsByClassName);\n\n            // Support: IE<10\n            // Check if getElementById returns elements by name\n            // The broken getElementById methods don't pick up programmatically-set names,\n            // so use a roundabout getElementsByName test\n            support.getById = assert(function (el) {\n                docElem.appendChild(el).id = expando;\n                return !document.getElementsByName || !document.getElementsByName(expando).length;\n            });\n\n            // ID filter and find\n            if (support.getById) {\n                Expr.filter[\"ID\"] = function (id) {\n                    var attrId = id.replace(runescape, funescape);\n                    return function (elem) {\n                        return elem.getAttribute(\"id\") === attrId;\n                    };\n                };\n                Expr.find[\"ID\"] = function (id, context) {\n                    if (typeof context.getElementById !== \"undefined\" && documentIsHTML) {\n                        var elem = context.getElementById(id);\n                        return elem ? [elem] : [];\n                    }\n                };\n            } else {\n                Expr.filter[\"ID\"] = function (id) {\n                    var attrId = id.replace(runescape, funescape);\n                    return function (elem) {\n                        var node = typeof elem.getAttributeNode !== \"undefined\" &&\n                            elem.getAttributeNode(\"id\");\n                        return node && node.value === attrId;\n                    };\n                };\n\n                // Support: IE 6 - 7 only\n                // getElementById is not reliable as a find shortcut\n                Expr.find[\"ID\"] = function (id, context) {\n                    if (typeof context.getElementById !== \"undefined\" && documentIsHTML) {\n                        var node, i, elems,\n                            elem = context.getElementById(id);\n\n                        if (elem) {\n\n                            // Verify the id attribute\n                            node = elem.getAttributeNode(\"id\");\n                            if (node && node.value === id) {\n                                return [elem];\n                            }\n\n                            // Fall back on getElementsByName\n                            elems = context.getElementsByName(id);\n                            i = 0;\n                            while ((elem = elems[i++])) {\n                                node = elem.getAttributeNode(\"id\");\n                                if (node && node.value === id) {\n                                    return [elem];\n                                }\n                            }\n                        }\n\n                        return [];\n                    }\n                };\n            }\n\n            // Tag\n            Expr.find[\"TAG\"] = support.getElementsByTagName ?\n                function (tag, context) {\n                    if (typeof context.getElementsByTagName !== \"undefined\") {\n                        return context.getElementsByTagName(tag);\n\n                        // DocumentFragment nodes don't have gEBTN\n                    } else if (support.qsa) {\n                        return context.querySelectorAll(tag);\n                    }\n                } :\n\n                function (tag, context) {\n                    var elem,\n                        tmp = [],\n                        i = 0,\n                        // By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too\n                        results = context.getElementsByTagName(tag);\n\n                    // Filter out possible comments\n                    if (tag === \"*\") {\n                        while ((elem = results[i++])) {\n                            if (elem.nodeType === 1) {\n                                tmp.push(elem);\n                            }\n                        }\n\n                        return tmp;\n                    }\n                    return results;\n                };\n\n            // Class\n            Expr.find[\"CLASS\"] = support.getElementsByClassName && function (className, context) {\n                if (typeof context.getElementsByClassName !== \"undefined\" && documentIsHTML) {\n                    return context.getElementsByClassName(className);\n                }\n            };\n\n            /* QSA/matchesSelector\n\t---------------------------------------------------------------------- */\n\n            // QSA and matchesSelector support\n\n            // matchesSelector(:active) reports false when true (IE9/Opera 11.5)\n            rbuggyMatches = [];\n\n            // qSa(:focus) reports false when true (Chrome 21)\n            // We allow this because of a bug in IE8/9 that throws an error\n            // whenever `document.activeElement` is accessed on an iframe\n            // So, we allow :focus to pass through QSA all the time to avoid the IE error\n            // See https://bugs.jquery.com/ticket/13378\n            rbuggyQSA = [];\n\n            if ((support.qsa = rnative.test(document.querySelectorAll))) {\n                // Build QSA regex\n                // Regex strategy adopted from Diego Perini\n                assert(function (el) {\n                    // Select is set to empty string on purpose\n                    // This is to test IE's treatment of not explicitly\n                    // setting a boolean content attribute,\n                    // since its presence should be enough\n                    // https://bugs.jquery.com/ticket/12359\n                    docElem.appendChild(el).innerHTML = \"<a id='\" + expando + \"'></a>\" +\n                        \"<select id='\" + expando + \"-\\r\\\\' msallowcapture=''>\" +\n                        \"<option selected=''></option></select>\";\n\n                    // Support: IE8, Opera 11-12.16\n                    // Nothing should be selected when empty strings follow ^= or $= or *=\n                    // The test attribute must be unknown in Opera but \"safe\" for WinRT\n                    // https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section\n                    if (el.querySelectorAll(\"[msallowcapture^='']\").length) {\n                        rbuggyQSA.push(\"[*^$]=\" + whitespace + \"*(?:''|\\\"\\\")\");\n                    }\n\n                    // Support: IE8\n                    // Boolean attributes and \"value\" are not treated correctly\n                    if (!el.querySelectorAll(\"[selected]\").length) {\n                        rbuggyQSA.push(\"\\\\[\" + whitespace + \"*(?:value|\" + booleans + \")\");\n                    }\n\n                    // Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+\n                    if (!el.querySelectorAll(\"[id~=\" + expando + \"-]\").length) {\n                        rbuggyQSA.push(\"~=\");\n                    }\n\n                    // Webkit/Opera - :checked should return selected option elements\n                    // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked\n                    // IE8 throws error here and will not see later tests\n                    if (!el.querySelectorAll(\":checked\").length) {\n                        rbuggyQSA.push(\":checked\");\n                    }\n\n                    // Support: Safari 8+, iOS 8+\n                    // https://bugs.webkit.org/show_bug.cgi?id=136851\n                    // In-page `selector#id sibling-combinator selector` fails\n                    if (!el.querySelectorAll(\"a#\" + expando + \"+*\").length) {\n                        rbuggyQSA.push(\".#.+[+~]\");\n                    }\n                });\n\n                assert(function (el) {\n                    el.innerHTML = \"<a href='' disabled='disabled'></a>\" +\n                        \"<select disabled='disabled'><option/></select>\";\n\n                    // Support: Windows 8 Native Apps\n                    // The type and name attributes are restricted during .innerHTML assignment\n                    var input = document.createElement(\"input\");\n                    input.setAttribute(\"type\", \"hidden\");\n                    el.appendChild(input).setAttribute(\"name\", \"D\");\n\n                    // Support: IE8\n                    // Enforce case-sensitivity of name attribute\n                    if (el.querySelectorAll(\"[name=d]\").length) {\n                        rbuggyQSA.push(\"name\" + whitespace + \"*[*^$|!~]?=\");\n                    }\n\n                    // FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)\n                    // IE8 throws error here and will not see later tests\n                    if (el.querySelectorAll(\":enabled\").length !== 2) {\n                        rbuggyQSA.push(\":enabled\", \":disabled\");\n                    }\n\n                    // Support: IE9-11+\n                    // IE's :disabled selector does not pick up the children of disabled fieldsets\n                    docElem.appendChild(el).disabled = true;\n                    if (el.querySelectorAll(\":disabled\").length !== 2) {\n                        rbuggyQSA.push(\":enabled\", \":disabled\");\n                    }\n\n                    // Opera 10-11 does not throw on post-comma invalid pseudos\n                    el.querySelectorAll(\"*,:x\");\n                    rbuggyQSA.push(\",.*:\");\n                });\n            }\n\n            if ((support.matchesSelector = rnative.test((matches = docElem.matches ||\n                docElem.webkitMatchesSelector ||\n                docElem.mozMatchesSelector ||\n                docElem.oMatchesSelector ||\n                docElem.msMatchesSelector)))) {\n\n                assert(function (el) {\n                    // Check to see if it's possible to do matchesSelector\n                    // on a disconnected node (IE 9)\n                    support.disconnectedMatch = matches.call(el, \"*\");\n\n                    // This should fail with an exception\n                    // Gecko does not error, returns false instead\n                    matches.call(el, \"[s!='']:x\");\n                    rbuggyMatches.push(\"!=\", pseudos);\n                });\n            }\n\n            rbuggyQSA = rbuggyQSA.length && new RegExp(rbuggyQSA.join(\"|\"));\n            rbuggyMatches = rbuggyMatches.length && new RegExp(rbuggyMatches.join(\"|\"));\n\n            /* Contains\n\t---------------------------------------------------------------------- */\n            hasCompare = rnative.test(docElem.compareDocumentPosition);\n\n            // Element contains another\n            // Purposefully self-exclusive\n            // As in, an element does not contain itself\n            contains = hasCompare || rnative.test(docElem.contains) ?\n                function (a, b) {\n                    var adown = a.nodeType === 9 ? a.documentElement : a,\n                        bup = b && b.parentNode;\n                    return a === bup || !!(bup && bup.nodeType === 1 && (\n                        adown.contains ?\n                            adown.contains(bup) :\n                            a.compareDocumentPosition && a.compareDocumentPosition(bup) & 16\n                    ));\n                } :\n                function (a, b) {\n                    if (b) {\n                        while ((b = b.parentNode)) {\n                            if (b === a) {\n                                return true;\n                            }\n                        }\n                    }\n                    return false;\n                };\n\n            /* Sorting\n\t---------------------------------------------------------------------- */\n\n            // Document order sorting\n            sortOrder = hasCompare ?\n                function (a, b) {\n\n                    // Flag for duplicate removal\n                    if (a === b) {\n                        hasDuplicate = true;\n                        return 0;\n                    }\n\n                    // Sort on method existence if only one input has compareDocumentPosition\n                    var compare = !a.compareDocumentPosition - !b.compareDocumentPosition;\n                    if (compare) {\n                        return compare;\n                    }\n\n                    // Calculate position if both inputs belong to the same document\n                    compare = (a.ownerDocument || a) === (b.ownerDocument || b) ?\n                        a.compareDocumentPosition(b) :\n\n                        // Otherwise we know they are disconnected\n                        1;\n\n                    // Disconnected nodes\n                    if (compare & 1 ||\n                        (!support.sortDetached && b.compareDocumentPosition(a) === compare)) {\n\n                        // Choose the first element that is related to our preferred document\n                        if (a === document || a.ownerDocument === preferredDoc && contains(preferredDoc, a)) {\n                            return -1;\n                        }\n                        if (b === document || b.ownerDocument === preferredDoc && contains(preferredDoc, b)) {\n                            return 1;\n                        }\n\n                        // Maintain original order\n                        return sortInput ?\n                            (indexOf(sortInput, a) - indexOf(sortInput, b)) :\n                            0;\n                    }\n\n                    return compare & 4 ? -1 : 1;\n                } :\n                function (a, b) {\n                    // Exit early if the nodes are identical\n                    if (a === b) {\n                        hasDuplicate = true;\n                        return 0;\n                    }\n\n                    var cur,\n                        i = 0,\n                        aup = a.parentNode,\n                        bup = b.parentNode,\n                        ap = [a],\n                        bp = [b];\n\n                    // Parentless nodes are either documents or disconnected\n                    if (!aup || !bup) {\n                        return a === document ? -1 :\n                            b === document ? 1 :\n                                aup ? -1 :\n                                    bup ? 1 :\n                                        sortInput ?\n                                            (indexOf(sortInput, a) - indexOf(sortInput, b)) :\n                                            0;\n\n                        // If the nodes are siblings, we can do a quick check\n                    } else if (aup === bup) {\n                        return siblingCheck(a, b);\n                    }\n\n                    // Otherwise we need full lists of their ancestors for comparison\n                    cur = a;\n                    while ((cur = cur.parentNode)) {\n                        ap.unshift(cur);\n                    }\n                    cur = b;\n                    while ((cur = cur.parentNode)) {\n                        bp.unshift(cur);\n                    }\n\n                    // Walk down the tree looking for a discrepancy\n                    while (ap[i] === bp[i]) {\n                        i++;\n                    }\n\n                    return i ?\n                        // Do a sibling check if the nodes have a common ancestor\n                        siblingCheck(ap[i], bp[i]) :\n\n                        // Otherwise nodes in our document sort first\n                        ap[i] === preferredDoc ? -1 :\n                            bp[i] === preferredDoc ? 1 :\n                                0;\n                };\n\n            return document;\n        };\n\n        Sizzle.matches = function (expr, elements) {\n            return Sizzle(expr, null, null, elements);\n        };\n\n        Sizzle.matchesSelector = function (elem, expr) {\n            // Set document vars if needed\n            if ((elem.ownerDocument || elem) !== document) {\n                setDocument(elem);\n            }\n\n            // Make sure that attribute selectors are quoted\n            expr = expr.replace(rattributeQuotes, \"='$1']\");\n\n            if (support.matchesSelector && documentIsHTML &&\n                !compilerCache[expr + \" \"] &&\n                (!rbuggyMatches || !rbuggyMatches.test(expr)) &&\n                (!rbuggyQSA || !rbuggyQSA.test(expr))) {\n\n                try {\n                    var ret = matches.call(elem, expr);\n\n                    // IE 9's matchesSelector returns false on disconnected nodes\n                    if (ret || support.disconnectedMatch ||\n                        // As well, disconnected nodes are said to be in a document\n                        // fragment in IE 9\n                        elem.document && elem.document.nodeType !== 11) {\n                        return ret;\n                    }\n                } catch (e) {\n                }\n            }\n\n            return Sizzle(expr, document, null, [elem]).length > 0;\n        };\n\n        Sizzle.contains = function (context, elem) {\n            // Set document vars if needed\n            if ((context.ownerDocument || context) !== document) {\n                setDocument(context);\n            }\n            return contains(context, elem);\n        };\n\n        Sizzle.attr = function (elem, name) {\n            // Set document vars if needed\n            if ((elem.ownerDocument || elem) !== document) {\n                setDocument(elem);\n            }\n\n            var fn = Expr.attrHandle[name.toLowerCase()],\n                // Don't get fooled by Object.prototype properties (jQuery #13807)\n                val = fn && hasOwn.call(Expr.attrHandle, name.toLowerCase()) ?\n                    fn(elem, name, !documentIsHTML) :\n                    undefined;\n\n            return val !== undefined ?\n                val :\n                support.attributes || !documentIsHTML ?\n                    elem.getAttribute(name) :\n                    (val = elem.getAttributeNode(name)) && val.specified ?\n                        val.value :\n                        null;\n        };\n\n        Sizzle.escape = function (sel) {\n            return (sel + \"\").replace(rcssescape, fcssescape);\n        };\n\n        Sizzle.error = function (msg) {\n            throw new Error(\"Syntax error, unrecognized expression: \" + msg);\n        };\n\n        /**\n         * Document sorting and removing duplicates\n         * @param {ArrayLike} results\n         */\n        Sizzle.uniqueSort = function (results) {\n            var elem,\n                duplicates = [],\n                j = 0,\n                i = 0;\n\n            // Unless we *know* we can detect duplicates, assume their presence\n            hasDuplicate = !support.detectDuplicates;\n            sortInput = !support.sortStable && results.slice(0);\n            results.sort(sortOrder);\n\n            if (hasDuplicate) {\n                while ((elem = results[i++])) {\n                    if (elem === results[i]) {\n                        j = duplicates.push(i);\n                    }\n                }\n                while (j--) {\n                    results.splice(duplicates[j], 1);\n                }\n            }\n\n            // Clear input after sorting to release objects\n            // See https://github.com/jquery/sizzle/pull/225\n            sortInput = null;\n\n            return results;\n        };\n\n        /**\n         * Utility function for retrieving the text value of an array of DOM nodes\n         * @param {Array|Element} elem\n         */\n        getText = Sizzle.getText = function (elem) {\n            var node,\n                ret = \"\",\n                i = 0,\n                nodeType = elem.nodeType;\n\n            if (!nodeType) {\n                // If no nodeType, this is expected to be an array\n                while ((node = elem[i++])) {\n                    // Do not traverse comment nodes\n                    ret += getText(node);\n                }\n            } else if (nodeType === 1 || nodeType === 9 || nodeType === 11) {\n                // Use textContent for elements\n                // innerText usage removed for consistency of new lines (jQuery #11153)\n                if (typeof elem.textContent === \"string\") {\n                    return elem.textContent;\n                } else {\n                    // Traverse its children\n                    for (elem = elem.firstChild; elem; elem = elem.nextSibling) {\n                        ret += getText(elem);\n                    }\n                }\n            } else if (nodeType === 3 || nodeType === 4) {\n                return elem.nodeValue;\n            }\n            // Do not include comment or processing instruction nodes\n\n            return ret;\n        };\n\n        Expr = Sizzle.selectors = {\n\n            // Can be adjusted by the user\n            cacheLength: 50,\n\n            createPseudo: markFunction,\n\n            match: matchExpr,\n\n            attrHandle: {},\n\n            find: {},\n\n            relative: {\n                \">\": {dir: \"parentNode\", first: true},\n                \" \": {dir: \"parentNode\"},\n                \"+\": {dir: \"previousSibling\", first: true},\n                \"~\": {dir: \"previousSibling\"}\n            },\n\n            preFilter: {\n                \"ATTR\": function (match) {\n                    match[1] = match[1].replace(runescape, funescape);\n\n                    // Move the given value to match[3] whether quoted or unquoted\n                    match[3] = (match[3] || match[4] || match[5] || \"\").replace(runescape, funescape);\n\n                    if (match[2] === \"~=\") {\n                        match[3] = \" \" + match[3] + \" \";\n                    }\n\n                    return match.slice(0, 4);\n                },\n\n                \"CHILD\": function (match) {\n                    /* matches from matchExpr[\"CHILD\"]\n\t\t\t\t1 type (only|nth|...)\n\t\t\t\t2 what (child|of-type)\n\t\t\t\t3 argument (even|odd|\\d*|\\d*n([+-]\\d+)?|...)\n\t\t\t\t4 xn-component of xn+y argument ([+-]?\\d*n|)\n\t\t\t\t5 sign of xn-component\n\t\t\t\t6 x of xn-component\n\t\t\t\t7 sign of y-component\n\t\t\t\t8 y of y-component\n\t\t\t*/\n                    match[1] = match[1].toLowerCase();\n\n                    if (match[1].slice(0, 3) === \"nth\") {\n                        // nth-* requires argument\n                        if (!match[3]) {\n                            Sizzle.error(match[0]);\n                        }\n\n                        // numeric x and y parameters for Expr.filter.CHILD\n                        // remember that false/true cast respectively to 0/1\n                        match[4] = +(match[4] ? match[5] + (match[6] || 1) : 2 * (match[3] === \"even\" || match[3] === \"odd\"));\n                        match[5] = +((match[7] + match[8]) || match[3] === \"odd\");\n\n                        // other types prohibit arguments\n                    } else if (match[3]) {\n                        Sizzle.error(match[0]);\n                    }\n\n                    return match;\n                },\n\n                \"PSEUDO\": function (match) {\n                    var excess,\n                        unquoted = !match[6] && match[2];\n\n                    if (matchExpr[\"CHILD\"].test(match[0])) {\n                        return null;\n                    }\n\n                    // Accept quoted arguments as-is\n                    if (match[3]) {\n                        match[2] = match[4] || match[5] || \"\";\n\n                        // Strip excess characters from unquoted arguments\n                    } else if (unquoted && rpseudo.test(unquoted) &&\n                        // Get excess from tokenize (recursively)\n                        (excess = tokenize(unquoted, true)) &&\n                        // advance to the next closing parenthesis\n                        (excess = unquoted.indexOf(\")\", unquoted.length - excess) - unquoted.length)) {\n\n                        // excess is a negative index\n                        match[0] = match[0].slice(0, excess);\n                        match[2] = unquoted.slice(0, excess);\n                    }\n\n                    // Return only captures needed by the pseudo filter method (type and argument)\n                    return match.slice(0, 3);\n                }\n            },\n\n            filter: {\n\n                \"TAG\": function (nodeNameSelector) {\n                    var nodeName = nodeNameSelector.replace(runescape, funescape).toLowerCase();\n                    return nodeNameSelector === \"*\" ?\n                        function () {\n                            return true;\n                        } :\n                        function (elem) {\n                            return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;\n                        };\n                },\n\n                \"CLASS\": function (className) {\n                    var pattern = classCache[className + \" \"];\n\n                    return pattern ||\n                        (pattern = new RegExp(\"(^|\" + whitespace + \")\" + className + \"(\" + whitespace + \"|$)\")) &&\n                        classCache(className, function (elem) {\n                            return pattern.test(typeof elem.className === \"string\" && elem.className || typeof elem.getAttribute !== \"undefined\" && elem.getAttribute(\"class\") || \"\");\n                        });\n                },\n\n                \"ATTR\": function (name, operator, check) {\n                    return function (elem) {\n                        var result = Sizzle.attr(elem, name);\n\n                        if (result == null) {\n                            return operator === \"!=\";\n                        }\n                        if (!operator) {\n                            return true;\n                        }\n\n                        result += \"\";\n\n                        return operator === \"=\" ? result === check :\n                            operator === \"!=\" ? result !== check :\n                                operator === \"^=\" ? check && result.indexOf(check) === 0 :\n                                    operator === \"*=\" ? check && result.indexOf(check) > -1 :\n                                        operator === \"$=\" ? check && result.slice(-check.length) === check :\n                                            operator === \"~=\" ? (\" \" + result.replace(rwhitespace, \" \") + \" \").indexOf(check) > -1 :\n                                                operator === \"|=\" ? result === check || result.slice(0, check.length + 1) === check + \"-\" :\n                                                    false;\n                    };\n                },\n\n                \"CHILD\": function (type, what, argument, first, last) {\n                    var simple = type.slice(0, 3) !== \"nth\",\n                        forward = type.slice(-4) !== \"last\",\n                        ofType = what === \"of-type\";\n\n                    return first === 1 && last === 0 ?\n\n                        // Shortcut for :nth-*(n)\n                        function (elem) {\n                            return !!elem.parentNode;\n                        } :\n\n                        function (elem, context, xml) {\n                            var cache, uniqueCache, outerCache, node, nodeIndex, start,\n                                dir = simple !== forward ? \"nextSibling\" : \"previousSibling\",\n                                parent = elem.parentNode,\n                                name = ofType && elem.nodeName.toLowerCase(),\n                                useCache = !xml && !ofType,\n                                diff = false;\n\n                            if (parent) {\n\n                                // :(first|last|only)-(child|of-type)\n                                if (simple) {\n                                    while (dir) {\n                                        node = elem;\n                                        while ((node = node[dir])) {\n                                            if (ofType ?\n                                                node.nodeName.toLowerCase() === name :\n                                                node.nodeType === 1) {\n\n                                                return false;\n                                            }\n                                        }\n                                        // Reverse direction for :only-* (if we haven't yet done so)\n                                        start = dir = type === \"only\" && !start && \"nextSibling\";\n                                    }\n                                    return true;\n                                }\n\n                                start = [forward ? parent.firstChild : parent.lastChild];\n\n                                // non-xml :nth-child(...) stores cache data on `parent`\n                                if (forward && useCache) {\n\n                                    // Seek `elem` from a previously-cached index\n\n                                    // ...in a gzip-friendly way\n                                    node = parent;\n                                    outerCache = node[expando] || (node[expando] = {});\n\n                                    // Support: IE <9 only\n                                    // Defend against cloned attroperties (jQuery gh-1709)\n                                    uniqueCache = outerCache[node.uniqueID] ||\n                                        (outerCache[node.uniqueID] = {});\n\n                                    cache = uniqueCache[type] || [];\n                                    nodeIndex = cache[0] === dirruns && cache[1];\n                                    diff = nodeIndex && cache[2];\n                                    node = nodeIndex && parent.childNodes[nodeIndex];\n\n                                    while ((node = ++nodeIndex && node && node[dir] ||\n\n                                        // Fallback to seeking `elem` from the start\n                                        (diff = nodeIndex = 0) || start.pop())) {\n\n                                        // When found, cache indexes on `parent` and break\n                                        if (node.nodeType === 1 && ++diff && node === elem) {\n                                            uniqueCache[type] = [dirruns, nodeIndex, diff];\n                                            break;\n                                        }\n                                    }\n\n                                } else {\n                                    // Use previously-cached element index if available\n                                    if (useCache) {\n                                        // ...in a gzip-friendly way\n                                        node = elem;\n                                        outerCache = node[expando] || (node[expando] = {});\n\n                                        // Support: IE <9 only\n                                        // Defend against cloned attroperties (jQuery gh-1709)\n                                        uniqueCache = outerCache[node.uniqueID] ||\n                                            (outerCache[node.uniqueID] = {});\n\n                                        cache = uniqueCache[type] || [];\n                                        nodeIndex = cache[0] === dirruns && cache[1];\n                                        diff = nodeIndex;\n                                    }\n\n                                    // xml :nth-child(...)\n                                    // or :nth-last-child(...) or :nth(-last)?-of-type(...)\n                                    if (diff === false) {\n                                        // Use the same loop as above to seek `elem` from the start\n                                        while ((node = ++nodeIndex && node && node[dir] ||\n                                            (diff = nodeIndex = 0) || start.pop())) {\n\n                                            if ((ofType ?\n                                                node.nodeName.toLowerCase() === name :\n                                                node.nodeType === 1) &&\n                                                ++diff) {\n\n                                                // Cache the index of each encountered element\n                                                if (useCache) {\n                                                    outerCache = node[expando] || (node[expando] = {});\n\n                                                    // Support: IE <9 only\n                                                    // Defend against cloned attroperties (jQuery gh-1709)\n                                                    uniqueCache = outerCache[node.uniqueID] ||\n                                                        (outerCache[node.uniqueID] = {});\n\n                                                    uniqueCache[type] = [dirruns, diff];\n                                                }\n\n                                                if (node === elem) {\n                                                    break;\n                                                }\n                                            }\n                                        }\n                                    }\n                                }\n\n                                // Incorporate the offset, then check against cycle size\n                                diff -= last;\n                                return diff === first || (diff % first === 0 && diff / first >= 0);\n                            }\n                        };\n                },\n\n                \"PSEUDO\": function (pseudo, argument) {\n                    // pseudo-class names are case-insensitive\n                    // http://www.w3.org/TR/selectors/#pseudo-classes\n                    // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters\n                    // Remember that setFilters inherits from pseudos\n                    var args,\n                        fn = Expr.pseudos[pseudo] || Expr.setFilters[pseudo.toLowerCase()] ||\n                            Sizzle.error(\"unsupported pseudo: \" + pseudo);\n\n                    // The user may use createPseudo to indicate that\n                    // arguments are needed to create the filter function\n                    // just as Sizzle does\n                    if (fn[expando]) {\n                        return fn(argument);\n                    }\n\n                    // But maintain support for old signatures\n                    if (fn.length > 1) {\n                        args = [pseudo, pseudo, \"\", argument];\n                        return Expr.setFilters.hasOwnProperty(pseudo.toLowerCase()) ?\n                            markFunction(function (seed, matches) {\n                                var idx,\n                                    matched = fn(seed, argument),\n                                    i = matched.length;\n                                while (i--) {\n                                    idx = indexOf(seed, matched[i]);\n                                    seed[idx] = !(matches[idx] = matched[i]);\n                                }\n                            }) :\n                            function (elem) {\n                                return fn(elem, 0, args);\n                            };\n                    }\n\n                    return fn;\n                }\n            },\n\n            pseudos: {\n                // Potentially complex pseudos\n                \"not\": markFunction(function (selector) {\n                    // Trim the selector passed to compile\n                    // to avoid treating leading and trailing\n                    // spaces as combinators\n                    var input = [],\n                        results = [],\n                        matcher = compile(selector.replace(rtrim, \"$1\"));\n\n                    return matcher[expando] ?\n                        markFunction(function (seed, matches, context, xml) {\n                            var elem,\n                                unmatched = matcher(seed, null, xml, []),\n                                i = seed.length;\n\n                            // Match elements unmatched by `matcher`\n                            while (i--) {\n                                if ((elem = unmatched[i])) {\n                                    seed[i] = !(matches[i] = elem);\n                                }\n                            }\n                        }) :\n                        function (elem, context, xml) {\n                            input[0] = elem;\n                            matcher(input, null, xml, results);\n                            // Don't keep the element (issue #299)\n                            input[0] = null;\n                            return !results.pop();\n                        };\n                }),\n\n                \"has\": markFunction(function (selector) {\n                    return function (elem) {\n                        return Sizzle(selector, elem).length > 0;\n                    };\n                }),\n\n                \"contains\": markFunction(function (text) {\n                    text = text.replace(runescape, funescape);\n                    return function (elem) {\n                        return (elem.textContent || elem.innerText || getText(elem)).indexOf(text) > -1;\n                    };\n                }),\n\n                // \"Whether an element is represented by a :lang() selector\n                // is based solely on the element's language value\n                // being equal to the identifier C,\n                // or beginning with the identifier C immediately followed by \"-\".\n                // The matching of C against the element's language value is performed case-insensitively.\n                // The identifier C does not have to be a valid language name.\"\n                // http://www.w3.org/TR/selectors/#lang-pseudo\n                \"lang\": markFunction(function (lang) {\n                    // lang value must be a valid identifier\n                    if (!ridentifier.test(lang || \"\")) {\n                        Sizzle.error(\"unsupported lang: \" + lang);\n                    }\n                    lang = lang.replace(runescape, funescape).toLowerCase();\n                    return function (elem) {\n                        var elemLang;\n                        do {\n                            if ((elemLang = documentIsHTML ?\n                                elem.lang :\n                                elem.getAttribute(\"xml:lang\") || elem.getAttribute(\"lang\"))) {\n\n                                elemLang = elemLang.toLowerCase();\n                                return elemLang === lang || elemLang.indexOf(lang + \"-\") === 0;\n                            }\n                        } while ((elem = elem.parentNode) && elem.nodeType === 1);\n                        return false;\n                    };\n                }),\n\n                // Miscellaneous\n                \"target\": function (elem) {\n                    var hash = window.location && window.location.hash;\n                    return hash && hash.slice(1) === elem.id;\n                },\n\n                \"root\": function (elem) {\n                    return elem === docElem;\n                },\n\n                \"focus\": function (elem) {\n                    return elem === document.activeElement && (!document.hasFocus || document.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex);\n                },\n\n                // Boolean properties\n                \"enabled\": createDisabledPseudo(false),\n                \"disabled\": createDisabledPseudo(true),\n\n                \"checked\": function (elem) {\n                    // In CSS3, :checked should return both checked and selected elements\n                    // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked\n                    var nodeName = elem.nodeName.toLowerCase();\n                    return (nodeName === \"input\" && !!elem.checked) || (nodeName === \"option\" && !!elem.selected);\n                },\n\n                \"selected\": function (elem) {\n                    // Accessing this property makes selected-by-default\n                    // options in Safari work properly\n                    if (elem.parentNode) {\n                        elem.parentNode.selectedIndex;\n                    }\n\n                    return elem.selected === true;\n                },\n\n                // Contents\n                \"empty\": function (elem) {\n                    // http://www.w3.org/TR/selectors/#empty-pseudo\n                    // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),\n                    //   but not by others (comment: 8; processing instruction: 7; etc.)\n                    // nodeType < 6 works because attributes (2) do not appear as children\n                    for (elem = elem.firstChild; elem; elem = elem.nextSibling) {\n                        if (elem.nodeType < 6) {\n                            return false;\n                        }\n                    }\n                    return true;\n                },\n\n                \"parent\": function (elem) {\n                    return !Expr.pseudos[\"empty\"](elem);\n                },\n\n                // Element/input types\n                \"header\": function (elem) {\n                    return rheader.test(elem.nodeName);\n                },\n\n                \"input\": function (elem) {\n                    return rinputs.test(elem.nodeName);\n                },\n\n                \"button\": function (elem) {\n                    var name = elem.nodeName.toLowerCase();\n                    return name === \"input\" && elem.type === \"button\" || name === \"button\";\n                },\n\n                \"text\": function (elem) {\n                    var attr;\n                    return elem.nodeName.toLowerCase() === \"input\" &&\n                        elem.type === \"text\" &&\n\n                        // Support: IE<8\n                        // New HTML5 attribute values (e.g., \"search\") appear with elem.type === \"text\"\n                        ((attr = elem.getAttribute(\"type\")) == null || attr.toLowerCase() === \"text\");\n                },\n\n                // Position-in-collection\n                \"first\": createPositionalPseudo(function () {\n                    return [0];\n                }),\n\n                \"last\": createPositionalPseudo(function (matchIndexes, length) {\n                    return [length - 1];\n                }),\n\n                \"eq\": createPositionalPseudo(function (matchIndexes, length, argument) {\n                    return [argument < 0 ? argument + length : argument];\n                }),\n\n                \"even\": createPositionalPseudo(function (matchIndexes, length) {\n                    var i = 0;\n                    for (; i < length; i += 2) {\n                        matchIndexes.push(i);\n                    }\n                    return matchIndexes;\n                }),\n\n                \"odd\": createPositionalPseudo(function (matchIndexes, length) {\n                    var i = 1;\n                    for (; i < length; i += 2) {\n                        matchIndexes.push(i);\n                    }\n                    return matchIndexes;\n                }),\n\n                \"lt\": createPositionalPseudo(function (matchIndexes, length, argument) {\n                    var i = argument < 0 ? argument + length : argument;\n                    for (; --i >= 0;) {\n                        matchIndexes.push(i);\n                    }\n                    return matchIndexes;\n                }),\n\n                \"gt\": createPositionalPseudo(function (matchIndexes, length, argument) {\n                    var i = argument < 0 ? argument + length : argument;\n                    for (; ++i < length;) {\n                        matchIndexes.push(i);\n                    }\n                    return matchIndexes;\n                })\n            }\n        };\n\n        Expr.pseudos[\"nth\"] = Expr.pseudos[\"eq\"];\n\n// Add button/input type pseudos\n        for (i in {radio: true, checkbox: true, file: true, password: true, image: true}) {\n            Expr.pseudos[i] = createInputPseudo(i);\n        }\n        for (i in {submit: true, reset: true}) {\n            Expr.pseudos[i] = createButtonPseudo(i);\n        }\n\n// Easy API for creating new setFilters\n        function setFilters() {\n        }\n\n        setFilters.prototype = Expr.filters = Expr.pseudos;\n        Expr.setFilters = new setFilters();\n\n        tokenize = Sizzle.tokenize = function (selector, parseOnly) {\n            var matched, match, tokens, type,\n                soFar, groups, preFilters,\n                cached = tokenCache[selector + \" \"];\n\n            if (cached) {\n                return parseOnly ? 0 : cached.slice(0);\n            }\n\n            soFar = selector;\n            groups = [];\n            preFilters = Expr.preFilter;\n\n            while (soFar) {\n\n                // Comma and first run\n                if (!matched || (match = rcomma.exec(soFar))) {\n                    if (match) {\n                        // Don't consume trailing commas as valid\n                        soFar = soFar.slice(match[0].length) || soFar;\n                    }\n                    groups.push((tokens = []));\n                }\n\n                matched = false;\n\n                // Combinators\n                if ((match = rcombinators.exec(soFar))) {\n                    matched = match.shift();\n                    tokens.push({\n                        value: matched,\n                        // Cast descendant combinators to space\n                        type: match[0].replace(rtrim, \" \")\n                    });\n                    soFar = soFar.slice(matched.length);\n                }\n\n                // Filters\n                for (type in Expr.filter) {\n                    if ((match = matchExpr[type].exec(soFar)) && (!preFilters[type] ||\n                        (match = preFilters[type](match)))) {\n                        matched = match.shift();\n                        tokens.push({\n                            value: matched,\n                            type: type,\n                            matches: match\n                        });\n                        soFar = soFar.slice(matched.length);\n                    }\n                }\n\n                if (!matched) {\n                    break;\n                }\n            }\n\n            // Return the length of the invalid excess\n            // if we're just parsing\n            // Otherwise, throw an error or return tokens\n            return parseOnly ?\n                soFar.length :\n                soFar ?\n                    Sizzle.error(selector) :\n                    // Cache the tokens\n                    tokenCache(selector, groups).slice(0);\n        };\n\n        function toSelector(tokens) {\n            var i = 0,\n                len = tokens.length,\n                selector = \"\";\n            for (; i < len; i++) {\n                selector += tokens[i].value;\n            }\n            return selector;\n        }\n\n        function addCombinator(matcher, combinator, base) {\n            var dir = combinator.dir,\n                skip = combinator.next,\n                key = skip || dir,\n                checkNonElements = base && key === \"parentNode\",\n                doneName = done++;\n\n            return combinator.first ?\n                // Check against closest ancestor/preceding element\n                function (elem, context, xml) {\n                    while ((elem = elem[dir])) {\n                        if (elem.nodeType === 1 || checkNonElements) {\n                            return matcher(elem, context, xml);\n                        }\n                    }\n                    return false;\n                } :\n\n                // Check against all ancestor/preceding elements\n                function (elem, context, xml) {\n                    var oldCache, uniqueCache, outerCache,\n                        newCache = [dirruns, doneName];\n\n                    // We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching\n                    if (xml) {\n                        while ((elem = elem[dir])) {\n                            if (elem.nodeType === 1 || checkNonElements) {\n                                if (matcher(elem, context, xml)) {\n                                    return true;\n                                }\n                            }\n                        }\n                    } else {\n                        while ((elem = elem[dir])) {\n                            if (elem.nodeType === 1 || checkNonElements) {\n                                outerCache = elem[expando] || (elem[expando] = {});\n\n                                // Support: IE <9 only\n                                // Defend against cloned attroperties (jQuery gh-1709)\n                                uniqueCache = outerCache[elem.uniqueID] || (outerCache[elem.uniqueID] = {});\n\n                                if (skip && skip === elem.nodeName.toLowerCase()) {\n                                    elem = elem[dir] || elem;\n                                } else if ((oldCache = uniqueCache[key]) &&\n                                    oldCache[0] === dirruns && oldCache[1] === doneName) {\n\n                                    // Assign to newCache so results back-propagate to previous elements\n                                    return (newCache[2] = oldCache[2]);\n                                } else {\n                                    // Reuse newcache so results back-propagate to previous elements\n                                    uniqueCache[key] = newCache;\n\n                                    // A match means we're done; a fail means we have to keep checking\n                                    if ((newCache[2] = matcher(elem, context, xml))) {\n                                        return true;\n                                    }\n                                }\n                            }\n                        }\n                    }\n                    return false;\n                };\n        }\n\n        function elementMatcher(matchers) {\n            return matchers.length > 1 ?\n                function (elem, context, xml) {\n                    var i = matchers.length;\n                    while (i--) {\n                        if (!matchers[i](elem, context, xml)) {\n                            return false;\n                        }\n                    }\n                    return true;\n                } :\n                matchers[0];\n        }\n\n        function multipleContexts(selector, contexts, results) {\n            var i = 0,\n                len = contexts.length;\n            for (; i < len; i++) {\n                Sizzle(selector, contexts[i], results);\n            }\n            return results;\n        }\n\n        function condense(unmatched, map, filter, context, xml) {\n            var elem,\n                newUnmatched = [],\n                i = 0,\n                len = unmatched.length,\n                mapped = map != null;\n\n            for (; i < len; i++) {\n                if ((elem = unmatched[i])) {\n                    if (!filter || filter(elem, context, xml)) {\n                        newUnmatched.push(elem);\n                        if (mapped) {\n                            map.push(i);\n                        }\n                    }\n                }\n            }\n\n            return newUnmatched;\n        }\n\n        function setMatcher(preFilter, selector, matcher, postFilter, postFinder, postSelector) {\n            if (postFilter && !postFilter[expando]) {\n                postFilter = setMatcher(postFilter);\n            }\n            if (postFinder && !postFinder[expando]) {\n                postFinder = setMatcher(postFinder, postSelector);\n            }\n            return markFunction(function (seed, results, context, xml) {\n                var temp, i, elem,\n                    preMap = [],\n                    postMap = [],\n                    preexisting = results.length,\n\n                    // Get initial elements from seed or context\n                    elems = seed || multipleContexts(selector || \"*\", context.nodeType ? [context] : context, []),\n\n                    // Prefilter to get matcher input, preserving a map for seed-results synchronization\n                    matcherIn = preFilter && (seed || !selector) ?\n                        condense(elems, preMap, preFilter, context, xml) :\n                        elems,\n\n                    matcherOut = matcher ?\n                        // If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,\n                        postFinder || (seed ? preFilter : preexisting || postFilter) ?\n\n                            // ...intermediate processing is necessary\n                            [] :\n\n                            // ...otherwise use results directly\n                            results :\n                        matcherIn;\n\n                // Find primary matches\n                if (matcher) {\n                    matcher(matcherIn, matcherOut, context, xml);\n                }\n\n                // Apply postFilter\n                if (postFilter) {\n                    temp = condense(matcherOut, postMap);\n                    postFilter(temp, [], context, xml);\n\n                    // Un-match failing elements by moving them back to matcherIn\n                    i = temp.length;\n                    while (i--) {\n                        if ((elem = temp[i])) {\n                            matcherOut[postMap[i]] = !(matcherIn[postMap[i]] = elem);\n                        }\n                    }\n                }\n\n                if (seed) {\n                    if (postFinder || preFilter) {\n                        if (postFinder) {\n                            // Get the final matcherOut by condensing this intermediate into postFinder contexts\n                            temp = [];\n                            i = matcherOut.length;\n                            while (i--) {\n                                if ((elem = matcherOut[i])) {\n                                    // Restore matcherIn since elem is not yet a final match\n                                    temp.push((matcherIn[i] = elem));\n                                }\n                            }\n                            postFinder(null, (matcherOut = []), temp, xml);\n                        }\n\n                        // Move matched elements from seed to results to keep them synchronized\n                        i = matcherOut.length;\n                        while (i--) {\n                            if ((elem = matcherOut[i]) &&\n                                (temp = postFinder ? indexOf(seed, elem) : preMap[i]) > -1) {\n\n                                seed[temp] = !(results[temp] = elem);\n                            }\n                        }\n                    }\n\n                    // Add elements to results, through postFinder if defined\n                } else {\n                    matcherOut = condense(\n                        matcherOut === results ?\n                            matcherOut.splice(preexisting, matcherOut.length) :\n                            matcherOut\n                    );\n                    if (postFinder) {\n                        postFinder(null, results, matcherOut, xml);\n                    } else {\n                        push.apply(results, matcherOut);\n                    }\n                }\n            });\n        }\n\n        function matcherFromTokens(tokens) {\n            var checkContext, matcher, j,\n                len = tokens.length,\n                leadingRelative = Expr.relative[tokens[0].type],\n                implicitRelative = leadingRelative || Expr.relative[\" \"],\n                i = leadingRelative ? 1 : 0,\n\n                // The foundational matcher ensures that elements are reachable from top-level context(s)\n                matchContext = addCombinator(function (elem) {\n                    return elem === checkContext;\n                }, implicitRelative, true),\n                matchAnyContext = addCombinator(function (elem) {\n                    return indexOf(checkContext, elem) > -1;\n                }, implicitRelative, true),\n                matchers = [function (elem, context, xml) {\n                    var ret = (!leadingRelative && (xml || context !== outermostContext)) || (\n                        (checkContext = context).nodeType ?\n                            matchContext(elem, context, xml) :\n                            matchAnyContext(elem, context, xml));\n                    // Avoid hanging onto element (issue #299)\n                    checkContext = null;\n                    return ret;\n                }];\n\n            for (; i < len; i++) {\n                if ((matcher = Expr.relative[tokens[i].type])) {\n                    matchers = [addCombinator(elementMatcher(matchers), matcher)];\n                } else {\n                    matcher = Expr.filter[tokens[i].type].apply(null, tokens[i].matches);\n\n                    // Return special upon seeing a positional matcher\n                    if (matcher[expando]) {\n                        // Find the next relative operator (if any) for proper handling\n                        j = ++i;\n                        for (; j < len; j++) {\n                            if (Expr.relative[tokens[j].type]) {\n                                break;\n                            }\n                        }\n                        return setMatcher(\n                            i > 1 && elementMatcher(matchers),\n                            i > 1 && toSelector(\n                            // If the preceding token was a descendant combinator, insert an implicit any-element `*`\n                            tokens.slice(0, i - 1).concat({value: tokens[i - 2].type === \" \" ? \"*\" : \"\"})\n                            ).replace(rtrim, \"$1\"),\n                            matcher,\n                            i < j && matcherFromTokens(tokens.slice(i, j)),\n                            j < len && matcherFromTokens((tokens = tokens.slice(j))),\n                            j < len && toSelector(tokens)\n                        );\n                    }\n                    matchers.push(matcher);\n                }\n            }\n\n            return elementMatcher(matchers);\n        }\n\n        function matcherFromGroupMatchers(elementMatchers, setMatchers) {\n            var bySet = setMatchers.length > 0,\n                byElement = elementMatchers.length > 0,\n                superMatcher = function (seed, context, xml, results, outermost) {\n                    var elem, j, matcher,\n                        matchedCount = 0,\n                        i = \"0\",\n                        unmatched = seed && [],\n                        setMatched = [],\n                        contextBackup = outermostContext,\n                        // We must always have either seed elements or outermost context\n                        elems = seed || byElement && Expr.find[\"TAG\"](\"*\", outermost),\n                        // Use integer dirruns iff this is the outermost matcher\n                        dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.random() || 0.1),\n                        len = elems.length;\n\n                    if (outermost) {\n                        outermostContext = context === document || context || outermost;\n                    }\n\n                    // Add elements passing elementMatchers directly to results\n                    // Support: IE<9, Safari\n                    // Tolerate NodeList properties (IE: \"length\"; Safari: <number>) matching elements by id\n                    for (; i !== len && (elem = elems[i]) != null; i++) {\n                        if (byElement && elem) {\n                            j = 0;\n                            if (!context && elem.ownerDocument !== document) {\n                                setDocument(elem);\n                                xml = !documentIsHTML;\n                            }\n                            while ((matcher = elementMatchers[j++])) {\n                                if (matcher(elem, context || document, xml)) {\n                                    results.push(elem);\n                                    break;\n                                }\n                            }\n                            if (outermost) {\n                                dirruns = dirrunsUnique;\n                            }\n                        }\n\n                        // Track unmatched elements for set filters\n                        if (bySet) {\n                            // They will have gone through all possible matchers\n                            if ((elem = !matcher && elem)) {\n                                matchedCount--;\n                            }\n\n                            // Lengthen the array for every element, matched or not\n                            if (seed) {\n                                unmatched.push(elem);\n                            }\n                        }\n                    }\n\n                    // `i` is now the count of elements visited above, and adding it to `matchedCount`\n                    // makes the latter nonnegative.\n                    matchedCount += i;\n\n                    // Apply set filters to unmatched elements\n                    // NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`\n                    // equals `i`), unless we didn't visit _any_ elements in the above loop because we have\n                    // no element matchers and no seed.\n                    // Incrementing an initially-string \"0\" `i` allows `i` to remain a string only in that\n                    // case, which will result in a \"00\" `matchedCount` that differs from `i` but is also\n                    // numerically zero.\n                    if (bySet && i !== matchedCount) {\n                        j = 0;\n                        while ((matcher = setMatchers[j++])) {\n                            matcher(unmatched, setMatched, context, xml);\n                        }\n\n                        if (seed) {\n                            // Reintegrate element matches to eliminate the need for sorting\n                            if (matchedCount > 0) {\n                                while (i--) {\n                                    if (!(unmatched[i] || setMatched[i])) {\n                                        setMatched[i] = pop.call(results);\n                                    }\n                                }\n                            }\n\n                            // Discard index placeholder values to get only actual matches\n                            setMatched = condense(setMatched);\n                        }\n\n                        // Add matches to results\n                        push.apply(results, setMatched);\n\n                        // Seedless set matches succeeding multiple successful matchers stipulate sorting\n                        if (outermost && !seed && setMatched.length > 0 &&\n                            (matchedCount + setMatchers.length) > 1) {\n\n                            Sizzle.uniqueSort(results);\n                        }\n                    }\n\n                    // Override manipulation of globals by nested matchers\n                    if (outermost) {\n                        dirruns = dirrunsUnique;\n                        outermostContext = contextBackup;\n                    }\n\n                    return unmatched;\n                };\n\n            return bySet ?\n                markFunction(superMatcher) :\n                superMatcher;\n        }\n\n        compile = Sizzle.compile = function (selector, match /* Internal Use Only */) {\n            var i,\n                setMatchers = [],\n                elementMatchers = [],\n                cached = compilerCache[selector + \" \"];\n\n            if (!cached) {\n                // Generate a function of recursive functions that can be used to check each element\n                if (!match) {\n                    match = tokenize(selector);\n                }\n                i = match.length;\n                while (i--) {\n                    cached = matcherFromTokens(match[i]);\n                    if (cached[expando]) {\n                        setMatchers.push(cached);\n                    } else {\n                        elementMatchers.push(cached);\n                    }\n                }\n\n                // Cache the compiled function\n                cached = compilerCache(selector, matcherFromGroupMatchers(elementMatchers, setMatchers));\n\n                // Save selector and tokenization\n                cached.selector = selector;\n            }\n            return cached;\n        };\n\n        /**\n         * A low-level selection function that works with Sizzle's compiled\n         *  selector functions\n         * @param {String|Function} selector A selector or a pre-compiled\n         *  selector function built with Sizzle.compile\n         * @param {Element} context\n         * @param {Array} [results]\n         * @param {Array} [seed] A set of elements to match against\n         */\n        select = Sizzle.select = function (selector, context, results, seed) {\n            var i, tokens, token, type, find,\n                compiled = typeof selector === \"function\" && selector,\n                match = !seed && tokenize((selector = compiled.selector || selector));\n\n            results = results || [];\n\n            // Try to minimize operations if there is only one selector in the list and no seed\n            // (the latter of which guarantees us context)\n            if (match.length === 1) {\n\n                // Reduce context if the leading compound selector is an ID\n                tokens = match[0] = match[0].slice(0);\n                if (tokens.length > 2 && (token = tokens[0]).type === \"ID\" &&\n                    context.nodeType === 9 && documentIsHTML && Expr.relative[tokens[1].type]) {\n\n                    context = (Expr.find[\"ID\"](token.matches[0].replace(runescape, funescape), context) || [])[0];\n                    if (!context) {\n                        return results;\n\n                        // Precompiled matchers will still verify ancestry, so step up a level\n                    } else if (compiled) {\n                        context = context.parentNode;\n                    }\n\n                    selector = selector.slice(tokens.shift().value.length);\n                }\n\n                // Fetch a seed set for right-to-left matching\n                i = matchExpr[\"needsContext\"].test(selector) ? 0 : tokens.length;\n                while (i--) {\n                    token = tokens[i];\n\n                    // Abort if we hit a combinator\n                    if (Expr.relative[(type = token.type)]) {\n                        break;\n                    }\n                    if ((find = Expr.find[type])) {\n                        // Search, expanding context for leading sibling combinators\n                        if ((seed = find(\n                            token.matches[0].replace(runescape, funescape),\n                            rsibling.test(tokens[0].type) && testContext(context.parentNode) || context\n                        ))) {\n\n                            // If seed is empty or no tokens remain, we can return early\n                            tokens.splice(i, 1);\n                            selector = seed.length && toSelector(tokens);\n                            if (!selector) {\n                                push.apply(results, seed);\n                                return results;\n                            }\n\n                            break;\n                        }\n                    }\n                }\n            }\n\n            // Compile and execute a filtering function if one is not provided\n            // Provide `match` to avoid retokenization if we modified the selector above\n            (compiled || compile(selector, match))(\n                seed,\n                context,\n                !documentIsHTML,\n                results,\n                !context || rsibling.test(selector) && testContext(context.parentNode) || context\n            );\n            return results;\n        };\n\n// One-time assignments\n\n// Sort stability\n        support.sortStable = expando.split(\"\").sort(sortOrder).join(\"\") === expando;\n\n// Support: Chrome 14-35+\n// Always assume duplicates if they aren't passed to the comparison function\n        support.detectDuplicates = !!hasDuplicate;\n\n// Initialize against the default document\n        setDocument();\n        \n        return Sizzle;\n\n    })(window);\n\n\njQuery.find = Sizzle;\njQuery.expr = Sizzle.selectors;\n\n// Deprecated\njQuery.expr[\":\"] = jQuery.expr.pseudos;\njQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort;\njQuery.text = Sizzle.getText;\njQuery.isXMLDoc = Sizzle.isXML;\njQuery.contains = Sizzle.contains;\njQuery.escapeSelector = Sizzle.escape;\n\n\nvar dir = function (elem, dir, until) {\n    var matched = [],\n        truncate = until !== undefined;\n\n    while ((elem = elem[dir]) && elem.nodeType !== 9) {\n        if (elem.nodeType === 1) {\n            if (truncate && jQuery(elem).is(until)) {\n                break;\n            }\n            matched.push(elem);\n        }\n    }\n    return matched;\n};\n\n\nvar siblings = function (n, elem) {\n    var matched = [];\n\n    for (; n; n = n.nextSibling) {\n        if (n.nodeType === 1 && n !== elem) {\n            matched.push(n);\n        }\n    }\n\n    return matched;\n};\n\n\nvar rneedsContext = jQuery.expr.match.needsContext;\n\n\nfunction nodeName(elem, name) {\n\n    return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();\n\n}\nvar rsingleTag = (/^<([a-z][^\\/\\0>:\\x20\\t\\r\\n\\f]*)[\\x20\\t\\r\\n\\f]*\\/?>(?:<\\/\\1>|)$/i);\n\n\n// Implement the identical functionality for filter and not\nfunction winnow(elements, qualifier, not) {\n    if (isFunction(qualifier)) {\n        return jQuery.grep(elements, function (elem, i) {\n            return !!qualifier.call(elem, i, elem) !== not;\n        });\n    }\n\n    // Single element\n    if (qualifier.nodeType) {\n        return jQuery.grep(elements, function (elem) {\n            return (elem === qualifier) !== not;\n        });\n    }\n\n    // Arraylike of elements (jQuery, arguments, Array)\n    if (typeof qualifier !== \"string\") {\n        return jQuery.grep(elements, function (elem) {\n            return (indexOf.call(qualifier, elem) > -1) !== not;\n        });\n    }\n\n    // Filtered directly for both simple and complex selectors\n    return jQuery.filter(qualifier, elements, not);\n}\n\njQuery.filter = function (expr, elems, not) {\n    var elem = elems[0];\n\n    if (not) {\n        expr = \":not(\" + expr + \")\";\n    }\n\n    if (elems.length === 1 && elem.nodeType === 1) {\n        return jQuery.find.matchesSelector(elem, expr) ? [elem] : [];\n    }\n\n    return jQuery.find.matches(expr, jQuery.grep(elems, function (elem) {\n        return elem.nodeType === 1;\n    }));\n};\n\njQuery.fn.extend({\n    find: function (selector) {\n        var i, ret,\n            len = this.length,\n            self = this;\n\n        if (typeof selector !== \"string\") {\n            return this.pushStack(jQuery(selector).filter(function () {\n                for (i = 0; i < len; i++) {\n                    if (jQuery.contains(self[i], this)) {\n                        return true;\n                    }\n                }\n            }));\n        }\n\n        ret = this.pushStack([]);\n\n        for (i = 0; i < len; i++) {\n            jQuery.find(selector, self[i], ret);\n        }\n\n        return len > 1 ? jQuery.uniqueSort(ret) : ret;\n    },\n    filter: function (selector) {\n        return this.pushStack(winnow(this, selector || [], false));\n    },\n    not: function (selector) {\n        return this.pushStack(winnow(this, selector || [], true));\n    },\n    is: function (selector) {\n        return !!winnow(\n            this,\n\n            // If this is a positional/relative selector, check membership in the returned set\n            // so $(\"p:first\").is(\"p:last\") won't return true for a doc with two \"p\".\n            typeof selector === \"string\" && rneedsContext.test(selector) ?\n                jQuery(selector) :\n                selector || [],\n            false\n        ).length;\n    }\n});\n\n\n// Initialize a jQuery object\n\n\n// A central reference to the root jQuery(document)\nvar rootjQuery,\n\n    // A simple way to check for HTML strings\n    // Prioritize #id over <tag> to avoid XSS via location.hash (#9521)\n    // Strict HTML recognition (#11290: must start with <)\n    // Shortcut simple #id case for speed\n    rquickExpr = /^(?:\\s*(<[\\w\\W]+>)[^>]*|#([\\w-]+))$/,\n\n    init = jQuery.fn.init = function (selector, context, root) {\n        var match, elem;\n\n        // HANDLE: $(\"\"), $(null), $(undefined), $(false)\n        if (!selector) {\n            return this;\n        }\n\n        // Method init() accepts an alternate rootjQuery\n        // so migrate can support jQuery.sub (gh-2101)\n        root = root || rootjQuery;\n\n        // Handle HTML strings\n        if (typeof selector === \"string\") {\n            if (selector[0] === \"<\" &&\n                selector[selector.length - 1] === \">\" &&\n                selector.length >= 3) {\n\n                // Assume that strings that start and end with <> are HTML and skip the regex check\n                match = [null, selector, null];\n\n            } else {\n                match = rquickExpr.exec(selector);\n            }\n\n            // Match html or make sure no context is specified for #id\n            if (match && (match[1] || !context)) {\n\n                // HANDLE: $(html) -> $(array)\n                if (match[1]) {\n                    context = context instanceof jQuery ? context[0] : context;\n\n                    // Option to run scripts is true for back-compat\n                    // Intentionally let the error be thrown if parseHTML is not present\n                    jQuery.merge(this, jQuery.parseHTML(\n                        match[1],\n                        context && context.nodeType ? context.ownerDocument || context : document,\n                        true\n                    ));\n\n                    // HANDLE: $(html, props)\n                    if (rsingleTag.test(match[1]) && jQuery.isPlainObject(context)) {\n                        for (match in context) {\n\n                            // Properties of context are called as methods if possible\n                            if (isFunction(this[match])) {\n                                this[match](context[match]);\n\n                                // ...and otherwise set as attributes\n                            } else {\n                                this.attr(match, context[match]);\n                            }\n                        }\n                    }\n\n                    return this;\n\n                    // HANDLE: $(#id)\n                } else {\n                    elem = document.getElementById(match[2]);\n\n                    if (elem) {\n\n                        // Inject the element directly into the jQuery object\n                        this[0] = elem;\n                        this.length = 1;\n                    }\n                    return this;\n                }\n\n                // HANDLE: $(expr, $(...))\n            } else if (!context || context.jquery) {\n                return (context || root).find(selector);\n\n                // HANDLE: $(expr, context)\n                // (which is just equivalent to: $(context).find(expr)\n            } else {\n                return this.constructor(context).find(selector);\n            }\n\n            // HANDLE: $(DOMElement)\n        } else if (selector.nodeType) {\n            this[0] = selector;\n            this.length = 1;\n            return this;\n\n            // HANDLE: $(function)\n            // Shortcut for document ready\n        } else if (isFunction(selector)) {\n            return root.ready !== undefined ?\n                root.ready(selector) :\n\n                // Execute immediately if ready is not present\n                selector(jQuery);\n        }\n\n        return jQuery.makeArray(selector, this);\n    };\n\n// Give the init function the jQuery prototype for later instantiation\ninit.prototype = jQuery.fn;\n\n// Initialize central reference\nrootjQuery = jQuery(document);\n\n\nvar rparentsprev = /^(?:parents|prev(?:Until|All))/,\n\n    // Methods guaranteed to produce a unique set when starting from a unique set\n    guaranteedUnique = {\n        children: true,\n        contents: true,\n        next: true,\n        prev: true\n    };\n\njQuery.fn.extend({\n    has: function (target) {\n        var targets = jQuery(target, this),\n            l = targets.length;\n\n        return this.filter(function () {\n            var i = 0;\n            for (; i < l; i++) {\n                if (jQuery.contains(this, targets[i])) {\n                    return true;\n                }\n            }\n        });\n    },\n\n    closest: function (selectors, context) {\n        var cur,\n            i = 0,\n            l = this.length,\n            matched = [],\n            targets = typeof selectors !== \"string\" && jQuery(selectors);\n\n        // Positional selectors never match, since there's no _selection_ context\n        if (!rneedsContext.test(selectors)) {\n            for (; i < l; i++) {\n                for (cur = this[i]; cur && cur !== context; cur = cur.parentNode) {\n\n                    // Always skip document fragments\n                    if (cur.nodeType < 11 && (targets ?\n                        targets.index(cur) > -1 :\n\n                        // Don't pass non-elements to Sizzle\n                        cur.nodeType === 1 &&\n                        jQuery.find.matchesSelector(cur, selectors))) {\n\n                        matched.push(cur);\n                        break;\n                    }\n                }\n            }\n        }\n\n        return this.pushStack(matched.length > 1 ? jQuery.uniqueSort(matched) : matched);\n    },\n\n    // Determine the position of an element within the set\n    index: function (elem) {\n\n        // No argument, return index in parent\n        if (!elem) {\n            return (this[0] && this[0].parentNode) ? this.first().prevAll().length : -1;\n        }\n\n        // Index in selector\n        if (typeof elem === \"string\") {\n            return indexOf.call(jQuery(elem), this[0]);\n        }\n\n        // Locate the position of the desired element\n        return indexOf.call(this,\n\n            // If it receives a jQuery object, the first element is used\n            elem.jquery ? elem[0] : elem\n        );\n    },\n\n    add: function (selector, context) {\n        return this.pushStack(\n            jQuery.uniqueSort(\n                jQuery.merge(this.get(), jQuery(selector, context))\n            )\n        );\n    },\n\n    addBack: function (selector) {\n        return this.add(selector == null ?\n            this.prevObject : this.prevObject.filter(selector)\n        );\n    }\n});\n\nfunction sibling(cur, dir) {\n    while ((cur = cur[dir]) && cur.nodeType !== 1) {\n    }\n    return cur;\n}\n\njQuery.each({\n    parent: function (elem) {\n        var parent = elem.parentNode;\n        return parent && parent.nodeType !== 11 ? parent : null;\n    },\n    parents: function (elem) {\n        return dir(elem, \"parentNode\");\n    },\n    parentsUntil: function (elem, i, until) {\n        return dir(elem, \"parentNode\", until);\n    },\n    next: function (elem) {\n        return sibling(elem, \"nextSibling\");\n    },\n    prev: function (elem) {\n        return sibling(elem, \"previousSibling\");\n    },\n    nextAll: function (elem) {\n        return dir(elem, \"nextSibling\");\n    },\n    prevAll: function (elem) {\n        return dir(elem, \"previousSibling\");\n    },\n    nextUntil: function (elem, i, until) {\n        return dir(elem, \"nextSibling\", until);\n    },\n    prevUntil: function (elem, i, until) {\n        return dir(elem, \"previousSibling\", until);\n    },\n    siblings: function (elem) {\n        return siblings((elem.parentNode || {}).firstChild, elem);\n    },\n    children: function (elem) {\n        return siblings(elem.firstChild);\n    },\n    contents: function (elem) {\n        if (nodeName(elem, \"iframe\")) {\n            return elem.contentDocument;\n        }\n\n        // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only\n        // Treat the template element as a regular one in browsers that\n        // don't support it.\n        if (nodeName(elem, \"template\")) {\n            elem = elem.content || elem;\n        }\n\n        return jQuery.merge([], elem.childNodes);\n    }\n}, function (name, fn) {\n    jQuery.fn[name] = function (until, selector) {\n        var matched = jQuery.map(this, fn, until);\n\n        if (name.slice(-5) !== \"Until\") {\n            selector = until;\n        }\n\n        if (selector && typeof selector === \"string\") {\n            matched = jQuery.filter(selector, matched);\n        }\n\n        if (this.length > 1) {\n\n            // Remove duplicates\n            if (!guaranteedUnique[name]) {\n                jQuery.uniqueSort(matched);\n            }\n\n            // Reverse order for parents* and prev-derivatives\n            if (rparentsprev.test(name)) {\n                matched.reverse();\n            }\n        }\n\n        return this.pushStack(matched);\n    };\n});\nvar rnothtmlwhite = (/[^\\x20\\t\\r\\n\\f]+/g);\n\n\n// Convert String-formatted options into Object-formatted ones\nfunction createOptions(options) {\n    var object = {};\n    jQuery.each(options.match(rnothtmlwhite) || [], function (_, flag) {\n        object[flag] = true;\n    });\n    return object;\n}\n\n/*\n * Create a callback list using the following parameters:\n *\n *\toptions: an optional list of space-separated options that will change how\n *\t\t\tthe callback list behaves or a more traditional option object\n *\n * By default a callback list will act like an event callback list and can be\n * \"fired\" multiple times.\n *\n * Possible options:\n *\n *\tonce:\t\t\twill ensure the callback list can only be fired once (like a Deferred)\n *\n *\tmemory:\t\t\twill keep track of previous values and will call any callback added\n *\t\t\t\t\tafter the list has been fired right away with the latest \"memorized\"\n *\t\t\t\t\tvalues (like a Deferred)\n *\n *\tunique:\t\t\twill ensure a callback can only be added once (no duplicate in the list)\n *\n *\tstopOnFalse:\tinterrupt callings when a callback returns false\n *\n */\njQuery.Callbacks = function (options) {\n\n    // Convert options from String-formatted to Object-formatted if needed\n    // (we check in cache first)\n    options = typeof options === \"string\" ?\n        createOptions(options) :\n        jQuery.extend({}, options);\n\n    var // Flag to know if list is currently firing\n        firing,\n\n        // Last fire value for non-forgettable lists\n        memory,\n\n        // Flag to know if list was already fired\n        fired,\n\n        // Flag to prevent firing\n        locked,\n\n        // Actual callback list\n        list = [],\n\n        // Queue of execution data for repeatable lists\n        queue = [],\n\n        // Index of currently firing callback (modified by add/remove as needed)\n        firingIndex = -1,\n\n        // Fire callbacks\n        fire = function () {\n\n            // Enforce single-firing\n            locked = locked || options.once;\n\n            // Execute callbacks for all pending executions,\n            // respecting firingIndex overrides and runtime changes\n            fired = firing = true;\n            for (; queue.length; firingIndex = -1) {\n                memory = queue.shift();\n                while (++firingIndex < list.length) {\n\n                    // Run callback and check for early termination\n                    if (list[firingIndex].apply(memory[0], memory[1]) === false &&\n                        options.stopOnFalse) {\n\n                        // Jump to end and forget the data so .add doesn't re-fire\n                        firingIndex = list.length;\n                        memory = false;\n                    }\n                }\n            }\n\n            // Forget the data if we're done with it\n            if (!options.memory) {\n                memory = false;\n            }\n\n            firing = false;\n\n            // Clean up if we're done firing for good\n            if (locked) {\n\n                // Keep an empty list if we have data for future add calls\n                if (memory) {\n                    list = [];\n\n                    // Otherwise, this object is spent\n                } else {\n                    list = \"\";\n                }\n            }\n        },\n\n        // Actual Callbacks object\n        self = {\n\n            // Add a callback or a collection of callbacks to the list\n            add: function () {\n                if (list) {\n\n                    // If we have memory from a past run, we should fire after adding\n                    if (memory && !firing) {\n                        firingIndex = list.length - 1;\n                        queue.push(memory);\n                    }\n\n                    (function add(args) {\n                        jQuery.each(args, function (_, arg) {\n                            if (isFunction(arg)) {\n                                if (!options.unique || !self.has(arg)) {\n                                    list.push(arg);\n                                }\n                            } else if (arg && arg.length && toType(arg) !== \"string\") {\n\n                                // Inspect recursively\n                                add(arg);\n                            }\n                        });\n                    })(arguments);\n\n                    if (memory && !firing) {\n                        fire();\n                    }\n                }\n                return this;\n            },\n\n            // Remove a callback from the list\n            remove: function () {\n                jQuery.each(arguments, function (_, arg) {\n                    var index;\n                    while ((index = jQuery.inArray(arg, list, index)) > -1) {\n                        list.splice(index, 1);\n\n                        // Handle firing indexes\n                        if (index <= firingIndex) {\n                            firingIndex--;\n                        }\n                    }\n                });\n                return this;\n            },\n\n            // Check if a given callback is in the list.\n            // If no argument is given, return whether or not list has callbacks attached.\n            has: function (fn) {\n                return fn ?\n                    jQuery.inArray(fn, list) > -1 :\n                    list.length > 0;\n            },\n\n            // Remove all callbacks from the list\n            empty: function () {\n                if (list) {\n                    list = [];\n                }\n                return this;\n            },\n\n            // Disable .fire and .add\n            // Abort any current/pending executions\n            // Clear all callbacks and values\n            disable: function () {\n                locked = queue = [];\n                list = memory = \"\";\n                return this;\n            },\n            disabled: function () {\n                return !list;\n            },\n\n            // Disable .fire\n            // Also disable .add unless we have memory (since it would have no effect)\n            // Abort any pending executions\n            lock: function () {\n                locked = queue = [];\n                if (!memory && !firing) {\n                    list = memory = \"\";\n                }\n                return this;\n            },\n            locked: function () {\n                return !!locked;\n            },\n\n            // Call all callbacks with the given context and arguments\n            fireWith: function (context, args) {\n                if (!locked) {\n                    args = args || [];\n                    args = [context, args.slice ? args.slice() : args];\n                    queue.push(args);\n                    if (!firing) {\n                        fire();\n                    }\n                }\n                return this;\n            },\n\n            // Call all the callbacks with the given arguments\n            fire: function () {\n                self.fireWith(this, arguments);\n                return this;\n            },\n\n            // To know if the callbacks have already been called at least once\n            fired: function () {\n                return !!fired;\n            }\n        };\n\n    return self;\n};\n\n\nfunction Identity(v) {\n    return v;\n}\n\nfunction Thrower(ex) {\n    throw ex;\n}\n\nfunction adoptValue(value, resolve, reject, noValue) {\n    var method;\n\n    try {\n\n        // Check for promise aspect first to privilege synchronous behavior\n        if (value && isFunction((method = value.promise))) {\n            method.call(value).done(resolve).fail(reject);\n\n            // Other thenables\n        } else if (value && isFunction((method = value.then))) {\n            method.call(value, resolve, reject);\n\n            // Other non-thenables\n        } else {\n\n            // Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer:\n            // * false: [ value ].slice( 0 ) => resolve( value )\n            // * true: [ value ].slice( 1 ) => resolve()\n            resolve.apply(undefined, [value].slice(noValue));\n        }\n\n        // For Promises/A+, convert exceptions into rejections\n        // Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in\n        // Deferred#then to conditionally suppress rejection.\n    } catch (value) {\n\n        // Support: Android 4.0 only\n        // Strict mode functions invoked without .call/.apply get global-object context\n        reject.apply(undefined, [value]);\n    }\n}\n\njQuery.extend({\n\n    Deferred: function (func) {\n        var tuples = [\n\n                // action, add listener, callbacks,\n                // ... .then handlers, argument index, [final state]\n                [\"notify\", \"progress\", jQuery.Callbacks(\"memory\"),\n                    jQuery.Callbacks(\"memory\"), 2],\n                [\"resolve\", \"done\", jQuery.Callbacks(\"once memory\"),\n                    jQuery.Callbacks(\"once memory\"), 0, \"resolved\"],\n                [\"reject\", \"fail\", jQuery.Callbacks(\"once memory\"),\n                    jQuery.Callbacks(\"once memory\"), 1, \"rejected\"]\n            ],\n            state = \"pending\",\n            promise = {\n                state: function () {\n                    return state;\n                },\n                always: function () {\n                    deferred.done(arguments).fail(arguments);\n                    return this;\n                },\n                \"catch\": function (fn) {\n                    return promise.then(null, fn);\n                },\n\n                // Keep pipe for back-compat\n                pipe: function ( /* fnDone, fnFail, fnProgress */) {\n                    var fns = arguments;\n\n                    return jQuery.Deferred(function (newDefer) {\n                        jQuery.each(tuples, function (i, tuple) {\n\n                            // Map tuples (progress, done, fail) to arguments (done, fail, progress)\n                            var fn = isFunction(fns[tuple[4]]) && fns[tuple[4]];\n\n                            // deferred.progress(function() { bind to newDefer or newDefer.notify })\n                            // deferred.done(function() { bind to newDefer or newDefer.resolve })\n                            // deferred.fail(function() { bind to newDefer or newDefer.reject })\n                            deferred[tuple[1]](function () {\n                                var returned = fn && fn.apply(this, arguments);\n                                if (returned && isFunction(returned.promise)) {\n                                    returned.promise()\n                                        .progress(newDefer.notify)\n                                        .done(newDefer.resolve)\n                                        .fail(newDefer.reject);\n                                } else {\n                                    newDefer[tuple[0] + \"With\"](\n                                        this,\n                                        fn ? [returned] : arguments\n                                    );\n                                }\n                            });\n                        });\n                        fns = null;\n                    }).promise();\n                },\n                then: function (onFulfilled, onRejected, onProgress) {\n                    var maxDepth = 0;\n\n                    function resolve(depth, deferred, handler, special) {\n                        return function () {\n                            var that = this,\n                                args = arguments,\n                                mightThrow = function () {\n                                    var returned, then;\n\n                                    // Support: Promises/A+ section 2.3.3.3.3\n                                    // https://promisesaplus.com/#point-59\n                                    // Ignore double-resolution attempts\n                                    if (depth < maxDepth) {\n                                        return;\n                                    }\n\n                                    returned = handler.apply(that, args);\n\n                                    // Support: Promises/A+ section 2.3.1\n                                    // https://promisesaplus.com/#point-48\n                                    if (returned === deferred.promise()) {\n                                        throw new TypeError(\"Thenable self-resolution\");\n                                    }\n\n                                    // Support: Promises/A+ sections 2.3.3.1, 3.5\n                                    // https://promisesaplus.com/#point-54\n                                    // https://promisesaplus.com/#point-75\n                                    // Retrieve `then` only once\n                                    then = returned &&\n\n                                        // Support: Promises/A+ section 2.3.4\n                                        // https://promisesaplus.com/#point-64\n                                        // Only check objects and functions for thenability\n                                        (typeof returned === \"object\" ||\n                                            typeof returned === \"function\") &&\n                                        returned.then;\n\n                                    // Handle a returned thenable\n                                    if (isFunction(then)) {\n\n                                        // Special processors (notify) just wait for resolution\n                                        if (special) {\n                                            then.call(\n                                                returned,\n                                                resolve(maxDepth, deferred, Identity, special),\n                                                resolve(maxDepth, deferred, Thrower, special)\n                                            );\n\n                                            // Normal processors (resolve) also hook into progress\n                                        } else {\n\n                                            // ...and disregard older resolution values\n                                            maxDepth++;\n\n                                            then.call(\n                                                returned,\n                                                resolve(maxDepth, deferred, Identity, special),\n                                                resolve(maxDepth, deferred, Thrower, special),\n                                                resolve(maxDepth, deferred, Identity,\n                                                    deferred.notifyWith)\n                                            );\n                                        }\n\n                                        // Handle all other returned values\n                                    } else {\n\n                                        // Only substitute handlers pass on context\n                                        // and multiple values (non-spec behavior)\n                                        if (handler !== Identity) {\n                                            that = undefined;\n                                            args = [returned];\n                                        }\n\n                                        // Process the value(s)\n                                        // Default process is resolve\n                                        (special || deferred.resolveWith)(that, args);\n                                    }\n                                },\n\n                                // Only normal processors (resolve) catch and reject exceptions\n                                process = special ?\n                                    mightThrow :\n                                    function () {\n                                        try {\n                                            mightThrow();\n                                        } catch (e) {\n\n                                            if (jQuery.Deferred.exceptionHook) {\n                                                jQuery.Deferred.exceptionHook(e,\n                                                    process.stackTrace);\n                                            }\n\n                                            // Support: Promises/A+ section 2.3.3.3.4.1\n                                            // https://promisesaplus.com/#point-61\n                                            // Ignore post-resolution exceptions\n                                            if (depth + 1 >= maxDepth) {\n\n                                                // Only substitute handlers pass on context\n                                                // and multiple values (non-spec behavior)\n                                                if (handler !== Thrower) {\n                                                    that = undefined;\n                                                    args = [e];\n                                                }\n\n                                                deferred.rejectWith(that, args);\n                                            }\n                                        }\n                                    };\n\n                            // Support: Promises/A+ section 2.3.3.3.1\n                            // https://promisesaplus.com/#point-57\n                            // Re-resolve promises immediately to dodge false rejection from\n                            // subsequent errors\n                            if (depth) {\n                                process();\n                            } else {\n\n                                // Call an optional hook to record the stack, in case of exception\n                                // since it's otherwise lost when execution goes async\n                                if (jQuery.Deferred.getStackHook) {\n                                    process.stackTrace = jQuery.Deferred.getStackHook();\n                                }\n                                window.setTimeout(process);\n                            }\n                        };\n                    }\n\n                    return jQuery.Deferred(function (newDefer) {\n\n                        // progress_handlers.add( ... )\n                        tuples[0][3].add(\n                            resolve(\n                                0,\n                                newDefer,\n                                isFunction(onProgress) ?\n                                    onProgress :\n                                    Identity,\n                                newDefer.notifyWith\n                            )\n                        );\n\n                        // fulfilled_handlers.add( ... )\n                        tuples[1][3].add(\n                            resolve(\n                                0,\n                                newDefer,\n                                isFunction(onFulfilled) ?\n                                    onFulfilled :\n                                    Identity\n                            )\n                        );\n\n                        // rejected_handlers.add( ... )\n                        tuples[2][3].add(\n                            resolve(\n                                0,\n                                newDefer,\n                                isFunction(onRejected) ?\n                                    onRejected :\n                                    Thrower\n                            )\n                        );\n                    }).promise();\n                },\n\n                // Get a promise for this deferred\n                // If obj is provided, the promise aspect is added to the object\n                promise: function (obj) {\n                    return obj != null ? jQuery.extend(obj, promise) : promise;\n                }\n            },\n            deferred = {};\n\n        // Add list-specific methods\n        jQuery.each(tuples, function (i, tuple) {\n            var list = tuple[2],\n                stateString = tuple[5];\n\n            // promise.progress = list.add\n            // promise.done = list.add\n            // promise.fail = list.add\n            promise[tuple[1]] = list.add;\n\n            // Handle state\n            if (stateString) {\n                list.add(\n                    function () {\n\n                        // state = \"resolved\" (i.e., fulfilled)\n                        // state = \"rejected\"\n                        state = stateString;\n                    },\n\n                    // rejected_callbacks.disable\n                    // fulfilled_callbacks.disable\n                    tuples[3 - i][2].disable,\n\n                    // rejected_handlers.disable\n                    // fulfilled_handlers.disable\n                    tuples[3 - i][3].disable,\n\n                    // progress_callbacks.lock\n                    tuples[0][2].lock,\n\n                    // progress_handlers.lock\n                    tuples[0][3].lock\n                );\n            }\n\n            // progress_handlers.fire\n            // fulfilled_handlers.fire\n            // rejected_handlers.fire\n            list.add(tuple[3].fire);\n\n            // deferred.notify = function() { deferred.notifyWith(...) }\n            // deferred.resolve = function() { deferred.resolveWith(...) }\n            // deferred.reject = function() { deferred.rejectWith(...) }\n            deferred[tuple[0]] = function () {\n                deferred[tuple[0] + \"With\"](this === deferred ? undefined : this, arguments);\n                return this;\n            };\n\n            // deferred.notifyWith = list.fireWith\n            // deferred.resolveWith = list.fireWith\n            // deferred.rejectWith = list.fireWith\n            deferred[tuple[0] + \"With\"] = list.fireWith;\n        });\n\n        // Make the deferred a promise\n        promise.promise(deferred);\n\n        // Call given func if any\n        if (func) {\n            func.call(deferred, deferred);\n        }\n\n        // All done!\n        return deferred;\n    },\n\n    // Deferred helper\n    when: function (singleValue) {\n        var\n\n            // count of uncompleted subordinates\n            remaining = arguments.length,\n\n            // count of unprocessed arguments\n            i = remaining,\n\n            // subordinate fulfillment data\n            resolveContexts = Array(i),\n            resolveValues = slice.call(arguments),\n\n            // the master Deferred\n            master = jQuery.Deferred(),\n\n            // subordinate callback factory\n            updateFunc = function (i) {\n                return function (value) {\n                    resolveContexts[i] = this;\n                    resolveValues[i] = arguments.length > 1 ? slice.call(arguments) : value;\n                    if (!(--remaining)) {\n                        master.resolveWith(resolveContexts, resolveValues);\n                    }\n                };\n            };\n\n        // Single- and empty arguments are adopted like Promise.resolve\n        if (remaining <= 1) {\n            adoptValue(singleValue, master.done(updateFunc(i)).resolve, master.reject,\n                !remaining);\n\n            // Use .then() to unwrap secondary thenables (cf. gh-3000)\n            if (master.state() === \"pending\" ||\n                isFunction(resolveValues[i] && resolveValues[i].then)) {\n\n                return master.then();\n            }\n        }\n\n        // Multiple arguments are aggregated like Promise.all array elements\n        while (i--) {\n            adoptValue(resolveValues[i], updateFunc(i), master.reject);\n        }\n\n        return master.promise();\n    }\n});\n\n\n// These usually indicate a programmer mistake during development,\n// warn about them ASAP rather than swallowing them by default.\nvar rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;\n\njQuery.Deferred.exceptionHook = function (error, stack) {\n\n    // Support: IE 8 - 9 only\n    // Console exists when dev tools are open, which can happen at any time\n    if (window.console && window.console.warn && error && rerrorNames.test(error.name)) {\n        window.console.warn(\"jQuery.Deferred exception: \" + error.message, error.stack, stack);\n    }\n};\n\n\njQuery.readyException = function (error) {\n    window.setTimeout(function () {\n        throw error;\n    });\n};\n\n\n// The deferred used on DOM ready\nvar readyList = jQuery.Deferred();\n\njQuery.fn.ready = function (fn) {\n\n    readyList\n        .then(fn)\n\n        // Wrap jQuery.readyException in a function so that the lookup\n        // happens at the time of error handling instead of callback\n        // registration.\n        .catch(function (error) {\n            jQuery.readyException(error);\n        });\n\n    return this;\n};\n\njQuery.extend({\n\n    // Is the DOM ready to be used? Set to true once it occurs.\n    isReady: false,\n\n    // A counter to track how many items to wait for before\n    // the ready event fires. See #6781\n    readyWait: 1,\n\n    // Handle when the DOM is ready\n    ready: function (wait) {\n\n        // Abort if there are pending holds or we're already ready\n        if (wait === true ? --jQuery.readyWait : jQuery.isReady) {\n            return;\n        }\n\n        // Remember that the DOM is ready\n        jQuery.isReady = true;\n\n        // If a normal DOM Ready event fired, decrement, and wait if need be\n        if (wait !== true && --jQuery.readyWait > 0) {\n            return;\n        }\n\n        // If there are functions bound, to execute\n        readyList.resolveWith(document, [jQuery]);\n    }\n});\n\njQuery.ready.then = readyList.then;\n\n// The ready event handler and self cleanup method\nfunction completed() {\n    document.removeEventListener(\"DOMContentLoaded\", completed);\n    window.removeEventListener(\"load\", completed);\n    jQuery.ready();\n}\n\n// Catch cases where $(document).ready() is called\n// after the browser event has already occurred.\n// Support: IE <=9 - 10 only\n// Older IE sometimes signals \"interactive\" too soon\nif (document.readyState === \"complete\" ||\n    (document.readyState !== \"loading\" && !document.documentElement.doScroll)) {\n\n    // Handle it asynchronously to allow scripts the opportunity to delay ready\n    window.setTimeout(jQuery.ready);\n\n} else {\n\n    // Use the handy event callback\n    document.addEventListener(\"DOMContentLoaded\", completed);\n\n    // A fallback to window.onload, that will always work\n    window.addEventListener(\"load\", completed);\n}\n\n\n// Multifunctional method to get and set values of a collection\n// The value/s can optionally be executed if it's a function\nvar access = function (elems, fn, key, value, chainable, emptyGet, raw) {\n    var i = 0,\n        len = elems.length,\n        bulk = key == null;\n\n    // Sets many values\n    if (toType(key) === \"object\") {\n        chainable = true;\n        for (i in key) {\n            access(elems, fn, i, key[i], true, emptyGet, raw);\n        }\n\n        // Sets one value\n    } else if (value !== undefined) {\n        chainable = true;\n\n        if (!isFunction(value)) {\n            raw = true;\n        }\n\n        if (bulk) {\n\n            // Bulk operations run against the entire set\n            if (raw) {\n                fn.call(elems, value);\n                fn = null;\n\n                // ...except when executing function values\n            } else {\n                bulk = fn;\n                fn = function (elem, key, value) {\n                    return bulk.call(jQuery(elem), value);\n                };\n            }\n        }\n\n        if (fn) {\n            for (; i < len; i++) {\n                fn(\n                    elems[i], key, raw ?\n                        value :\n                        value.call(elems[i], i, fn(elems[i], key))\n                );\n            }\n        }\n    }\n\n    if (chainable) {\n        return elems;\n    }\n\n    // Gets\n    if (bulk) {\n        return fn.call(elems);\n    }\n\n    return len ? fn(elems[0], key) : emptyGet;\n};\n\n\n// Matches dashed string for camelizing\nvar rmsPrefix = /^-ms-/,\n    rdashAlpha = /-([a-z])/g;\n\n// Used by camelCase as callback to replace()\nfunction fcamelCase(all, letter) {\n    return letter.toUpperCase();\n}\n\n// Convert dashed to camelCase; used by the css and data modules\n// Support: IE <=9 - 11, Edge 12 - 15\n// Microsoft forgot to hump their vendor prefix (#9572)\nfunction camelCase(string) {\n    return string.replace(rmsPrefix, \"ms-\").replace(rdashAlpha, fcamelCase);\n}\n\nvar acceptData = function (owner) {\n\n    // Accepts only:\n    //  - Node\n    //    - Node.ELEMENT_NODE\n    //    - Node.DOCUMENT_NODE\n    //  - Object\n    //    - Any\n    return owner.nodeType === 1 || owner.nodeType === 9 || !(+owner.nodeType);\n};\n\n\nfunction Data() {\n    this.expando = jQuery.expando + Data.uid++;\n}\n\nData.uid = 1;\n\nData.prototype = {\n\n    cache: function (owner) {\n\n        // Check if the owner object already has a cache\n        var value = owner[this.expando];\n\n        // If not, create one\n        if (!value) {\n            value = {};\n\n            // We can accept data for non-element nodes in modern browsers,\n            // but we should not, see #8335.\n            // Always return an empty object.\n            if (acceptData(owner)) {\n\n                // If it is a node unlikely to be stringify-ed or looped over\n                // use plain assignment\n                if (owner.nodeType) {\n                    owner[this.expando] = value;\n\n                    // Otherwise secure it in a non-enumerable property\n                    // configurable must be true to allow the property to be\n                    // deleted when data is removed\n                } else {\n                    Object.defineProperty(owner, this.expando, {\n                        value: value,\n                        configurable: true\n                    });\n                }\n            }\n        }\n\n        return value;\n    },\n    set: function (owner, data, value) {\n        var prop,\n            cache = this.cache(owner);\n\n        // Handle: [ owner, key, value ] args\n        // Always use camelCase key (gh-2257)\n        if (typeof data === \"string\") {\n            cache[camelCase(data)] = value;\n\n            // Handle: [ owner, { properties } ] args\n        } else {\n\n            // Copy the properties one-by-one to the cache object\n            for (prop in data) {\n                cache[camelCase(prop)] = data[prop];\n            }\n        }\n        return cache;\n    },\n    get: function (owner, key) {\n        return key === undefined ?\n            this.cache(owner) :\n\n            // Always use camelCase key (gh-2257)\n            owner[this.expando] && owner[this.expando][camelCase(key)];\n    },\n    access: function (owner, key, value) {\n\n        // In cases where either:\n        //\n        //   1. No key was specified\n        //   2. A string key was specified, but no value provided\n        //\n        // Take the \"read\" path and allow the get method to determine\n        // which value to return, respectively either:\n        //\n        //   1. The entire cache object\n        //   2. The data stored at the key\n        //\n        if (key === undefined ||\n            ((key && typeof key === \"string\") && value === undefined)) {\n\n            return this.get(owner, key);\n        }\n\n        // When the key is not a string, or both a key and value\n        // are specified, set or extend (existing objects) with either:\n        //\n        //   1. An object of properties\n        //   2. A key and value\n        //\n        this.set(owner, key, value);\n\n        // Since the \"set\" path can have two possible entry points\n        // return the expected data based on which path was taken[*]\n        return value !== undefined ? value : key;\n    },\n    remove: function (owner, key) {\n        var i,\n            cache = owner[this.expando];\n\n        if (cache === undefined) {\n            return;\n        }\n\n        if (key !== undefined) {\n\n            // Support array or space separated string of keys\n            if (Array.isArray(key)) {\n\n                // If key is an array of keys...\n                // We always set camelCase keys, so remove that.\n                key = key.map(camelCase);\n            } else {\n                key = camelCase(key);\n\n                // If a key with the spaces exists, use it.\n                // Otherwise, create an array by matching non-whitespace\n                key = key in cache ?\n                    [key] :\n                    (key.match(rnothtmlwhite) || []);\n            }\n\n            i = key.length;\n\n            while (i--) {\n                delete cache[key[i]];\n            }\n        }\n\n        // Remove the expando if there's no more data\n        if (key === undefined || jQuery.isEmptyObject(cache)) {\n\n            // Support: Chrome <=35 - 45\n            // Webkit & Blink performance suffers when deleting properties\n            // from DOM nodes, so set to undefined instead\n            // https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)\n            if (owner.nodeType) {\n                owner[this.expando] = undefined;\n            } else {\n                delete owner[this.expando];\n            }\n        }\n    },\n    hasData: function (owner) {\n        var cache = owner[this.expando];\n        return cache !== undefined && !jQuery.isEmptyObject(cache);\n    }\n};\nvar dataPriv = new Data();\n\nvar dataUser = new Data();\n\n\n//\tImplementation Summary\n//\n//\t1. Enforce API surface and semantic compatibility with 1.9.x branch\n//\t2. Improve the module's maintainability by reducing the storage\n//\t\tpaths to a single mechanism.\n//\t3. Use the same single mechanism to support \"private\" and \"user\" data.\n//\t4. _Never_ expose \"private\" data to user code (TODO: Drop _data, _removeData)\n//\t5. Avoid exposing implementation details on user objects (eg. expando properties)\n//\t6. Provide a clear path for implementation upgrade to WeakMap in 2014\n\nvar rbrace = /^(?:\\{[\\w\\W]*\\}|\\[[\\w\\W]*\\])$/,\n    rmultiDash = /[A-Z]/g;\n\nfunction getData(data) {\n    if (data === \"true\") {\n        return true;\n    }\n\n    if (data === \"false\") {\n        return false;\n    }\n\n    if (data === \"null\") {\n        return null;\n    }\n\n    // Only convert to a number if it doesn't change the string\n    if (data === +data + \"\") {\n        return +data;\n    }\n\n    if (rbrace.test(data)) {\n        return JSON.parse(data);\n    }\n\n    return data;\n}\n\nfunction dataAttr(elem, key, data) {\n    var name;\n\n    // If nothing was found internally, try to fetch any\n    // data from the HTML5 data-* attribute\n    if (data === undefined && elem.nodeType === 1) {\n        name = \"data-\" + key.replace(rmultiDash, \"-$&\").toLowerCase();\n        data = elem.getAttribute(name);\n\n        if (typeof data === \"string\") {\n            try {\n                data = getData(data);\n            } catch (e) {\n            }\n\n            // Make sure we set the data so it isn't changed later\n            dataUser.set(elem, key, data);\n        } else {\n            data = undefined;\n        }\n    }\n    return data;\n}\n\njQuery.extend({\n    hasData: function (elem) {\n        return dataUser.hasData(elem) || dataPriv.hasData(elem);\n    },\n\n    data: function (elem, name, data) {\n        return dataUser.access(elem, name, data);\n    },\n\n    removeData: function (elem, name) {\n        dataUser.remove(elem, name);\n    },\n\n    // TODO: Now that all calls to _data and _removeData have been replaced\n    // with direct calls to dataPriv methods, these can be deprecated.\n    _data: function (elem, name, data) {\n        return dataPriv.access(elem, name, data);\n    },\n\n    _removeData: function (elem, name) {\n        dataPriv.remove(elem, name);\n    }\n});\n\njQuery.fn.extend({\n    data: function (key, value) {\n        var i, name, data,\n            elem = this[0],\n            attrs = elem && elem.attributes;\n\n        // Gets all values\n        if (key === undefined) {\n            if (this.length) {\n                data = dataUser.get(elem);\n\n                if (elem.nodeType === 1 && !dataPriv.get(elem, \"hasDataAttrs\")) {\n                    i = attrs.length;\n                    while (i--) {\n\n                        // Support: IE 11 only\n                        // The attrs elements can be null (#14894)\n                        if (attrs[i]) {\n                            name = attrs[i].name;\n                            if (name.indexOf(\"data-\") === 0) {\n                                name = camelCase(name.slice(5));\n                                dataAttr(elem, name, data[name]);\n                            }\n                        }\n                    }\n                    dataPriv.set(elem, \"hasDataAttrs\", true);\n                }\n            }\n\n            return data;\n        }\n\n        // Sets multiple values\n        if (typeof key === \"object\") {\n            return this.each(function () {\n                dataUser.set(this, key);\n            });\n        }\n\n        return access(this, function (value) {\n            var data;\n\n            // The calling jQuery object (element matches) is not empty\n            // (and therefore has an element appears at this[ 0 ]) and the\n            // `value` parameter was not undefined. An empty jQuery object\n            // will result in `undefined` for elem = this[ 0 ] which will\n            // throw an exception if an attempt to read a data cache is made.\n            if (elem && value === undefined) {\n\n                // Attempt to get data from the cache\n                // The key will always be camelCased in Data\n                data = dataUser.get(elem, key);\n                if (data !== undefined) {\n                    return data;\n                }\n\n                // Attempt to \"discover\" the data in\n                // HTML5 custom data-* attrs\n                data = dataAttr(elem, key);\n                if (data !== undefined) {\n                    return data;\n                }\n\n                // We tried really hard, but the data doesn't exist.\n                return;\n            }\n\n            // Set the data...\n            this.each(function () {\n\n                // We always store the camelCased key\n                dataUser.set(this, key, value);\n            });\n        }, null, value, arguments.length > 1, null, true);\n    },\n\n    removeData: function (key) {\n        return this.each(function () {\n            dataUser.remove(this, key);\n        });\n    }\n});\n\n\njQuery.extend({\n    queue: function (elem, type, data) {\n        var queue;\n\n        if (elem) {\n            type = (type || \"fx\") + \"queue\";\n            queue = dataPriv.get(elem, type);\n\n            // Speed up dequeue by getting out quickly if this is just a lookup\n            if (data) {\n                if (!queue || Array.isArray(data)) {\n                    queue = dataPriv.access(elem, type, jQuery.makeArray(data));\n                } else {\n                    queue.push(data);\n                }\n            }\n            return queue || [];\n        }\n    },\n\n    dequeue: function (elem, type) {\n        type = type || \"fx\";\n\n        var queue = jQuery.queue(elem, type),\n            startLength = queue.length,\n            fn = queue.shift(),\n            hooks = jQuery._queueHooks(elem, type),\n            next = function () {\n                jQuery.dequeue(elem, type);\n            };\n\n        // If the fx queue is dequeued, always remove the progress sentinel\n        if (fn === \"inprogress\") {\n            fn = queue.shift();\n            startLength--;\n        }\n\n        if (fn) {\n\n            // Add a progress sentinel to prevent the fx queue from being\n            // automatically dequeued\n            if (type === \"fx\") {\n                queue.unshift(\"inprogress\");\n            }\n\n            // Clear up the last queue stop function\n            delete hooks.stop;\n            fn.call(elem, next, hooks);\n        }\n\n        if (!startLength && hooks) {\n            hooks.empty.fire();\n        }\n    },\n\n    // Not public - generate a queueHooks object, or return the current one\n    _queueHooks: function (elem, type) {\n        var key = type + \"queueHooks\";\n        return dataPriv.get(elem, key) || dataPriv.access(elem, key, {\n            empty: jQuery.Callbacks(\"once memory\").add(function () {\n                dataPriv.remove(elem, [type + \"queue\", key]);\n            })\n        });\n    }\n});\n\njQuery.fn.extend({\n    queue: function (type, data) {\n        var setter = 2;\n\n        if (typeof type !== \"string\") {\n            data = type;\n            type = \"fx\";\n            setter--;\n        }\n\n        if (arguments.length < setter) {\n            return jQuery.queue(this[0], type);\n        }\n\n        return data === undefined ?\n            this :\n            this.each(function () {\n                var queue = jQuery.queue(this, type, data);\n\n                // Ensure a hooks for this queue\n                jQuery._queueHooks(this, type);\n\n                if (type === \"fx\" && queue[0] !== \"inprogress\") {\n                    jQuery.dequeue(this, type);\n                }\n            });\n    },\n    dequeue: function (type) {\n        return this.each(function () {\n            jQuery.dequeue(this, type);\n        });\n    },\n    clearQueue: function (type) {\n        return this.queue(type || \"fx\", []);\n    },\n\n    // Get a promise resolved when queues of a certain type\n    // are emptied (fx is the type by default)\n    promise: function (type, obj) {\n        var tmp,\n            count = 1,\n            defer = jQuery.Deferred(),\n            elements = this,\n            i = this.length,\n            resolve = function () {\n                if (!(--count)) {\n                    defer.resolveWith(elements, [elements]);\n                }\n            };\n\n        if (typeof type !== \"string\") {\n            obj = type;\n            type = undefined;\n        }\n        type = type || \"fx\";\n\n        while (i--) {\n            tmp = dataPriv.get(elements[i], type + \"queueHooks\");\n            if (tmp && tmp.empty) {\n                count++;\n                tmp.empty.add(resolve);\n            }\n        }\n        resolve();\n        return defer.promise(obj);\n    }\n});\nvar pnum = (/[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/).source;\n\nvar rcssNum = new RegExp(\"^(?:([+-])=|)(\" + pnum + \")([a-z%]*)$\", \"i\");\n\n\nvar cssExpand = [\"Top\", \"Right\", \"Bottom\", \"Left\"];\n\nvar isHiddenWithinTree = function (elem, el) {\n\n    // isHiddenWithinTree might be called from jQuery#filter function;\n    // in that case, element will be second argument\n    elem = el || elem;\n\n    // Inline style trumps all\n    return elem.style.display === \"none\" ||\n        elem.style.display === \"\" &&\n\n        // Otherwise, check computed style\n        // Support: Firefox <=43 - 45\n        // Disconnected elements can have computed display: none, so first confirm that elem is\n        // in the document.\n        jQuery.contains(elem.ownerDocument, elem) &&\n\n        jQuery.css(elem, \"display\") === \"none\";\n};\n\nvar swap = function (elem, options, callback, args) {\n    var ret, name,\n        old = {};\n\n    // Remember the old values, and insert the new ones\n    for (name in options) {\n        old[name] = elem.style[name];\n        elem.style[name] = options[name];\n    }\n\n    ret = callback.apply(elem, args || []);\n\n    // Revert the old values\n    for (name in options) {\n        elem.style[name] = old[name];\n    }\n\n    return ret;\n};\n\n\nfunction adjustCSS(elem, prop, valueParts, tween) {\n    var adjusted, scale,\n        maxIterations = 20,\n        currentValue = tween ?\n            function () {\n                return tween.cur();\n            } :\n            function () {\n                return jQuery.css(elem, prop, \"\");\n            },\n        initial = currentValue(),\n        unit = valueParts && valueParts[3] || (jQuery.cssNumber[prop] ? \"\" : \"px\"),\n\n        // Starting value computation is required for potential unit mismatches\n        initialInUnit = (jQuery.cssNumber[prop] || unit !== \"px\" && +initial) &&\n            rcssNum.exec(jQuery.css(elem, prop));\n\n    if (initialInUnit && initialInUnit[3] !== unit) {\n\n        // Support: Firefox <=54\n        // Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144)\n        initial = initial / 2;\n\n        // Trust units reported by jQuery.css\n        unit = unit || initialInUnit[3];\n\n        // Iteratively approximate from a nonzero starting point\n        initialInUnit = +initial || 1;\n\n        while (maxIterations--) {\n\n            // Evaluate and update our best guess (doubling guesses that zero out).\n            // Finish if the scale equals or crosses 1 (making the old*new product non-positive).\n            jQuery.style(elem, prop, initialInUnit + unit);\n            if ((1 - scale) * (1 - (scale = currentValue() / initial || 0.5)) <= 0) {\n                maxIterations = 0;\n            }\n            initialInUnit = initialInUnit / scale;\n\n        }\n\n        initialInUnit = initialInUnit * 2;\n        jQuery.style(elem, prop, initialInUnit + unit);\n\n        // Make sure we update the tween properties later on\n        valueParts = valueParts || [];\n    }\n\n    if (valueParts) {\n        initialInUnit = +initialInUnit || +initial || 0;\n\n        // Apply relative offset (+=/-=) if specified\n        adjusted = valueParts[1] ?\n            initialInUnit + (valueParts[1] + 1) * valueParts[2] :\n            +valueParts[2];\n        if (tween) {\n            tween.unit = unit;\n            tween.start = initialInUnit;\n            tween.end = adjusted;\n        }\n    }\n    return adjusted;\n}\n\n\nvar defaultDisplayMap = {};\n\nfunction getDefaultDisplay(elem) {\n    var temp,\n        doc = elem.ownerDocument,\n        nodeName = elem.nodeName,\n        display = defaultDisplayMap[nodeName];\n\n    if (display) {\n        return display;\n    }\n\n    temp = doc.body.appendChild(doc.createElement(nodeName));\n    display = jQuery.css(temp, \"display\");\n\n    temp.parentNode.removeChild(temp);\n\n    if (display === \"none\") {\n        display = \"block\";\n    }\n    defaultDisplayMap[nodeName] = display;\n\n    return display;\n}\n\nfunction showHide(elements, show) {\n    var display, elem,\n        values = [],\n        index = 0,\n        length = elements.length;\n\n    // Determine new display value for elements that need to change\n    for (; index < length; index++) {\n        elem = elements[index];\n        if (!elem.style) {\n            continue;\n        }\n\n        display = elem.style.display;\n        if (show) {\n\n            // Since we force visibility upon cascade-hidden elements, an immediate (and slow)\n            // check is required in this first loop unless we have a nonempty display value (either\n            // inline or about-to-be-restored)\n            if (display === \"none\") {\n                values[index] = dataPriv.get(elem, \"display\") || null;\n                if (!values[index]) {\n                    elem.style.display = \"\";\n                }\n            }\n            if (elem.style.display === \"\" && isHiddenWithinTree(elem)) {\n                values[index] = getDefaultDisplay(elem);\n            }\n        } else {\n            if (display !== \"none\") {\n                values[index] = \"none\";\n\n                // Remember what we're overwriting\n                dataPriv.set(elem, \"display\", display);\n            }\n        }\n    }\n\n    // Set the display of the elements in a second loop to avoid constant reflow\n    for (index = 0; index < length; index++) {\n        if (values[index] != null) {\n            elements[index].style.display = values[index];\n        }\n    }\n\n    return elements;\n}\n\njQuery.fn.extend({\n    show: function () {\n        return showHide(this, true);\n    },\n    hide: function () {\n        return showHide(this);\n    },\n    toggle: function (state) {\n        if (typeof state === \"boolean\") {\n            return state ? this.show() : this.hide();\n        }\n\n        return this.each(function () {\n            if (isHiddenWithinTree(this)) {\n                jQuery(this).show();\n            } else {\n                jQuery(this).hide();\n            }\n        });\n    }\n});\nvar rcheckableType = (/^(?:checkbox|radio)$/i);\n\nvar rtagName = (/<([a-z][^\\/\\0>\\x20\\t\\r\\n\\f]+)/i);\n\nvar rscriptType = (/^$|^module$|\\/(?:java|ecma)script/i);\n\n\n// We have to close these tags to support XHTML (#13200)\nvar wrapMap = {\n\n    // Support: IE <=9 only\n    option: [1, \"<select multiple='multiple'>\", \"</select>\"],\n\n    // XHTML parsers do not magically insert elements in the\n    // same way that tag soup parsers do. So we cannot shorten\n    // this by omitting <tbody> or other required elements.\n    thead: [1, \"<table>\", \"</table>\"],\n    col: [2, \"<table><colgroup>\", \"</colgroup></table>\"],\n    tr: [2, \"<table><tbody>\", \"</tbody></table>\"],\n    td: [3, \"<table><tbody><tr>\", \"</tr></tbody></table>\"],\n\n    _default: [0, \"\", \"\"]\n};\n\n// Support: IE <=9 only\nwrapMap.optgroup = wrapMap.option;\n\nwrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;\nwrapMap.th = wrapMap.td;\n\n\nfunction getAll(context, tag) {\n\n    // Support: IE <=9 - 11 only\n    // Use typeof to avoid zero-argument method invocation on host objects (#15151)\n    var ret;\n\n    if (typeof context.getElementsByTagName !== \"undefined\") {\n        ret = context.getElementsByTagName(tag || \"*\");\n\n    } else if (typeof context.querySelectorAll !== \"undefined\") {\n        ret = context.querySelectorAll(tag || \"*\");\n\n    } else {\n        ret = [];\n    }\n\n    if (tag === undefined || tag && nodeName(context, tag)) {\n        return jQuery.merge([context], ret);\n    }\n\n    return ret;\n}\n\n\n// Mark scripts as having already been evaluated\nfunction setGlobalEval(elems, refElements) {\n    var i = 0,\n        l = elems.length;\n\n    for (; i < l; i++) {\n        dataPriv.set(\n            elems[i],\n            \"globalEval\",\n            !refElements || dataPriv.get(refElements[i], \"globalEval\")\n        );\n    }\n}\n\n\nvar rhtml = /<|&#?\\w+;/;\n\nfunction buildFragment(elems, context, scripts, selection, ignored) {\n    var elem, tmp, tag, wrap, contains, j,\n        fragment = context.createDocumentFragment(),\n        nodes = [],\n        i = 0,\n        l = elems.length;\n\n    for (; i < l; i++) {\n        elem = elems[i];\n\n        if (elem || elem === 0) {\n\n            // Add nodes directly\n            if (toType(elem) === \"object\") {\n\n                // Support: Android <=4.0 only, PhantomJS 1 only\n                // push.apply(_, arraylike) throws on ancient WebKit\n                jQuery.merge(nodes, elem.nodeType ? [elem] : elem);\n\n                // Convert non-html into a text node\n            } else if (!rhtml.test(elem)) {\n                nodes.push(context.createTextNode(elem));\n\n                // Convert html into DOM nodes\n            } else {\n                tmp = tmp || fragment.appendChild(context.createElement(\"div\"));\n\n                // Deserialize a standard representation\n                tag = (rtagName.exec(elem) || [\"\", \"\"])[1].toLowerCase();\n                wrap = wrapMap[tag] || wrapMap._default;\n                tmp.innerHTML = wrap[1] + jQuery.htmlPrefilter(elem) + wrap[2];\n\n                // Descend through wrappers to the right content\n                j = wrap[0];\n                while (j--) {\n                    tmp = tmp.lastChild;\n                }\n\n                // Support: Android <=4.0 only, PhantomJS 1 only\n                // push.apply(_, arraylike) throws on ancient WebKit\n                jQuery.merge(nodes, tmp.childNodes);\n\n                // Remember the top-level container\n                tmp = fragment.firstChild;\n\n                // Ensure the created nodes are orphaned (#12392)\n                tmp.textContent = \"\";\n            }\n        }\n    }\n\n    // Remove wrapper from fragment\n    fragment.textContent = \"\";\n\n    i = 0;\n    while ((elem = nodes[i++])) {\n\n        // Skip elements already in the context collection (trac-4087)\n        if (selection && jQuery.inArray(elem, selection) > -1) {\n            if (ignored) {\n                ignored.push(elem);\n            }\n            continue;\n        }\n\n        contains = jQuery.contains(elem.ownerDocument, elem);\n\n        // Append to fragment\n        tmp = getAll(fragment.appendChild(elem), \"script\");\n\n        // Preserve script evaluation history\n        if (contains) {\n            setGlobalEval(tmp);\n        }\n\n        // Capture executables\n        if (scripts) {\n            j = 0;\n            while ((elem = tmp[j++])) {\n                if (rscriptType.test(elem.type || \"\")) {\n                    scripts.push(elem);\n                }\n            }\n        }\n    }\n\n    return fragment;\n}\n\n\n(function () {\n    var fragment = document.createDocumentFragment(),\n        div = fragment.appendChild(document.createElement(\"div\")),\n        input = document.createElement(\"input\");\n\n    // Support: Android 4.0 - 4.3 only\n    // Check state lost if the name is set (#11217)\n    // Support: Windows Web Apps (WWA)\n    // `name` and `type` must use .setAttribute for WWA (#14901)\n    input.setAttribute(\"type\", \"radio\");\n    input.setAttribute(\"checked\", \"checked\");\n    input.setAttribute(\"name\", \"t\");\n\n    div.appendChild(input);\n\n    // Support: Android <=4.1 only\n    // Older WebKit doesn't clone checked state correctly in fragments\n    support.checkClone = div.cloneNode(true).cloneNode(true).lastChild.checked;\n\n    // Support: IE <=11 only\n    // Make sure textarea (and checkbox) defaultValue is properly cloned\n    div.innerHTML = \"<textarea>x</textarea>\";\n    support.noCloneChecked = !!div.cloneNode(true).lastChild.defaultValue;\n})();\nvar documentElement = document.documentElement;\n\n\nvar\n    rkeyEvent = /^key/,\n    rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/,\n    rtypenamespace = /^([^.]*)(?:\\.(.+)|)/;\n\nfunction returnTrue() {\n    return true;\n}\n\nfunction returnFalse() {\n    return false;\n}\n\n// Support: IE <=9 only\n// See #13393 for more info\nfunction safeActiveElement() {\n    try {\n        return document.activeElement;\n    } catch (err) {\n    }\n}\n\nfunction on(elem, types, selector, data, fn, one) {\n    var origFn, type;\n\n    // Types can be a map of types/handlers\n    if (typeof types === \"object\") {\n\n        // ( types-Object, selector, data )\n        if (typeof selector !== \"string\") {\n\n            // ( types-Object, data )\n            data = data || selector;\n            selector = undefined;\n        }\n        for (type in types) {\n            on(elem, type, selector, data, types[type], one);\n        }\n        return elem;\n    }\n\n    if (data == null && fn == null) {\n\n        // ( types, fn )\n        fn = selector;\n        data = selector = undefined;\n    } else if (fn == null) {\n        if (typeof selector === \"string\") {\n\n            // ( types, selector, fn )\n            fn = data;\n            data = undefined;\n        } else {\n\n            // ( types, data, fn )\n            fn = data;\n            data = selector;\n            selector = undefined;\n        }\n    }\n    if (fn === false) {\n        fn = returnFalse;\n    } else if (!fn) {\n        return elem;\n    }\n\n    if (one === 1) {\n        origFn = fn;\n        fn = function (event) {\n\n            // Can use an empty set, since event contains the info\n            jQuery().off(event);\n            return origFn.apply(this, arguments);\n        };\n\n        // Use same guid so caller can remove using origFn\n        fn.guid = origFn.guid || (origFn.guid = jQuery.guid++);\n    }\n    return elem.each(function () {\n        jQuery.event.add(this, types, fn, data, selector);\n    });\n}\n\n/*\n * Helper functions for managing events -- not part of the public interface.\n * Props to Dean Edwards' addEvent library for many of the ideas.\n */\njQuery.event = {\n\n    global: {},\n\n    add: function (elem, types, handler, data, selector) {\n\n        var handleObjIn, eventHandle, tmp,\n            events, t, handleObj,\n            special, handlers, type, namespaces, origType,\n            elemData = dataPriv.get(elem);\n\n        // Don't attach events to noData or text/comment nodes (but allow plain objects)\n        if (!elemData) {\n            return;\n        }\n\n        // Caller can pass in an object of custom data in lieu of the handler\n        if (handler.handler) {\n            handleObjIn = handler;\n            handler = handleObjIn.handler;\n            selector = handleObjIn.selector;\n        }\n\n        // Ensure that invalid selectors throw exceptions at attach time\n        // Evaluate against documentElement in case elem is a non-element node (e.g., document)\n        if (selector) {\n            jQuery.find.matchesSelector(documentElement, selector);\n        }\n\n        // Make sure that the handler has a unique ID, used to find/remove it later\n        if (!handler.guid) {\n            handler.guid = jQuery.guid++;\n        }\n\n        // Init the element's event structure and main handler, if this is the first\n        if (!(events = elemData.events)) {\n            events = elemData.events = {};\n        }\n        if (!(eventHandle = elemData.handle)) {\n            eventHandle = elemData.handle = function (e) {\n\n                // Discard the second event of a jQuery.event.trigger() and\n                // when an event is called after a page has unloaded\n                return typeof jQuery !== \"undefined\" && jQuery.event.triggered !== e.type ?\n                    jQuery.event.dispatch.apply(elem, arguments) : undefined;\n            };\n        }\n\n        // Handle multiple events separated by a space\n        types = (types || \"\").match(rnothtmlwhite) || [\"\"];\n        t = types.length;\n        while (t--) {\n            tmp = rtypenamespace.exec(types[t]) || [];\n            type = origType = tmp[1];\n            namespaces = (tmp[2] || \"\").split(\".\").sort();\n\n            // There *must* be a type, no attaching namespace-only handlers\n            if (!type) {\n                continue;\n            }\n\n            // If event changes its type, use the special event handlers for the changed type\n            special = jQuery.event.special[type] || {};\n\n            // If selector defined, determine special event api type, otherwise given type\n            type = (selector ? special.delegateType : special.bindType) || type;\n\n            // Update special based on newly reset type\n            special = jQuery.event.special[type] || {};\n\n            // handleObj is passed to all event handlers\n            handleObj = jQuery.extend({\n                type: type,\n                origType: origType,\n                data: data,\n                handler: handler,\n                guid: handler.guid,\n                selector: selector,\n                needsContext: selector && jQuery.expr.match.needsContext.test(selector),\n                namespace: namespaces.join(\".\")\n            }, handleObjIn);\n\n            // Init the event handler queue if we're the first\n            if (!(handlers = events[type])) {\n                handlers = events[type] = [];\n                handlers.delegateCount = 0;\n\n                // Only use addEventListener if the special events handler returns false\n                if (!special.setup ||\n                    special.setup.call(elem, data, namespaces, eventHandle) === false) {\n\n                    if (elem.addEventListener) {\n                        elem.addEventListener(type, eventHandle);\n                    }\n                }\n            }\n\n            if (special.add) {\n                special.add.call(elem, handleObj);\n\n                if (!handleObj.handler.guid) {\n                    handleObj.handler.guid = handler.guid;\n                }\n            }\n\n            // Add to the element's handler list, delegates in front\n            if (selector) {\n                handlers.splice(handlers.delegateCount++, 0, handleObj);\n            } else {\n                handlers.push(handleObj);\n            }\n\n            // Keep track of which events have ever been used, for event optimization\n            jQuery.event.global[type] = true;\n        }\n\n    },\n\n    // Detach an event or set of events from an element\n    remove: function (elem, types, handler, selector, mappedTypes) {\n\n        var j, origCount, tmp,\n            events, t, handleObj,\n            special, handlers, type, namespaces, origType,\n            elemData = dataPriv.hasData(elem) && dataPriv.get(elem);\n\n        if (!elemData || !(events = elemData.events)) {\n            return;\n        }\n\n        // Once for each type.namespace in types; type may be omitted\n        types = (types || \"\").match(rnothtmlwhite) || [\"\"];\n        t = types.length;\n        while (t--) {\n            tmp = rtypenamespace.exec(types[t]) || [];\n            type = origType = tmp[1];\n            namespaces = (tmp[2] || \"\").split(\".\").sort();\n\n            // Unbind all events (on this namespace, if provided) for the element\n            if (!type) {\n                for (type in events) {\n                    jQuery.event.remove(elem, type + types[t], handler, selector, true);\n                }\n                continue;\n            }\n\n            special = jQuery.event.special[type] || {};\n            type = (selector ? special.delegateType : special.bindType) || type;\n            handlers = events[type] || [];\n            tmp = tmp[2] &&\n                new RegExp(\"(^|\\\\.)\" + namespaces.join(\"\\\\.(?:.*\\\\.|)\") + \"(\\\\.|$)\");\n\n            // Remove matching events\n            origCount = j = handlers.length;\n            while (j--) {\n                handleObj = handlers[j];\n\n                if ((mappedTypes || origType === handleObj.origType) &&\n                    (!handler || handler.guid === handleObj.guid) &&\n                    (!tmp || tmp.test(handleObj.namespace)) &&\n                    (!selector || selector === handleObj.selector ||\n                        selector === \"**\" && handleObj.selector)) {\n                    handlers.splice(j, 1);\n\n                    if (handleObj.selector) {\n                        handlers.delegateCount--;\n                    }\n                    if (special.remove) {\n                        special.remove.call(elem, handleObj);\n                    }\n                }\n            }\n\n            // Remove generic event handler if we removed something and no more handlers exist\n            // (avoids potential for endless recursion during removal of special event handlers)\n            if (origCount && !handlers.length) {\n                if (!special.teardown ||\n                    special.teardown.call(elem, namespaces, elemData.handle) === false) {\n\n                    jQuery.removeEvent(elem, type, elemData.handle);\n                }\n\n                delete events[type];\n            }\n        }\n\n        // Remove data and the expando if it's no longer used\n        if (jQuery.isEmptyObject(events)) {\n            dataPriv.remove(elem, \"handle events\");\n        }\n    },\n\n    dispatch: function (nativeEvent) {\n\n        // Make a writable jQuery.Event from the native event object\n        var event = jQuery.event.fix(nativeEvent);\n\n        var i, j, ret, matched, handleObj, handlerQueue,\n            args = new Array(arguments.length),\n            handlers = (dataPriv.get(this, \"events\") || {})[event.type] || [],\n            special = jQuery.event.special[event.type] || {};\n\n        // Use the fix-ed jQuery.Event rather than the (read-only) native event\n        args[0] = event;\n\n        for (i = 1; i < arguments.length; i++) {\n            args[i] = arguments[i];\n        }\n\n        event.delegateTarget = this;\n\n        // Call the preDispatch hook for the mapped type, and let it bail if desired\n        if (special.preDispatch && special.preDispatch.call(this, event) === false) {\n            return;\n        }\n\n        // Determine handlers\n        handlerQueue = jQuery.event.handlers.call(this, event, handlers);\n\n        // Run delegates first; they may want to stop propagation beneath us\n        i = 0;\n        while ((matched = handlerQueue[i++]) && !event.isPropagationStopped()) {\n            event.currentTarget = matched.elem;\n\n            j = 0;\n            while ((handleObj = matched.handlers[j++]) &&\n            !event.isImmediatePropagationStopped()) {\n\n                // Triggered event must either 1) have no namespace, or 2) have namespace(s)\n                // a subset or equal to those in the bound event (both can have no namespace).\n                if (!event.rnamespace || event.rnamespace.test(handleObj.namespace)) {\n\n                    event.handleObj = handleObj;\n                    event.data = handleObj.data;\n\n                    ret = ((jQuery.event.special[handleObj.origType] || {}).handle ||\n                        handleObj.handler).apply(matched.elem, args);\n\n                    if (ret !== undefined) {\n                        if ((event.result = ret) === false) {\n                            event.preventDefault();\n                            event.stopPropagation();\n                        }\n                    }\n                }\n            }\n        }\n\n        // Call the postDispatch hook for the mapped type\n        if (special.postDispatch) {\n            special.postDispatch.call(this, event);\n        }\n\n        return event.result;\n    },\n\n    handlers: function (event, handlers) {\n        var i, handleObj, sel, matchedHandlers, matchedSelectors,\n            handlerQueue = [],\n            delegateCount = handlers.delegateCount,\n            cur = event.target;\n\n        // Find delegate handlers\n        if (delegateCount &&\n\n            // Support: IE <=9\n            // Black-hole SVG <use> instance trees (trac-13180)\n            cur.nodeType &&\n\n            // Support: Firefox <=42\n            // Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861)\n            // https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click\n            // Support: IE 11 only\n            // ...but not arrow key \"clicks\" of radio inputs, which can have `button` -1 (gh-2343)\n            !(event.type === \"click\" && event.button >= 1)) {\n\n            for (; cur !== this; cur = cur.parentNode || this) {\n\n                // Don't check non-elements (#13208)\n                // Don't process clicks on disabled elements (#6911, #8165, #11382, #11764)\n                if (cur.nodeType === 1 && !(event.type === \"click\" && cur.disabled === true)) {\n                    matchedHandlers = [];\n                    matchedSelectors = {};\n                    for (i = 0; i < delegateCount; i++) {\n                        handleObj = handlers[i];\n\n                        // Don't conflict with Object.prototype properties (#13203)\n                        sel = handleObj.selector + \" \";\n\n                        if (matchedSelectors[sel] === undefined) {\n                            matchedSelectors[sel] = handleObj.needsContext ?\n                                jQuery(sel, this).index(cur) > -1 :\n                                jQuery.find(sel, this, null, [cur]).length;\n                        }\n                        if (matchedSelectors[sel]) {\n                            matchedHandlers.push(handleObj);\n                        }\n                    }\n                    if (matchedHandlers.length) {\n                        handlerQueue.push({elem: cur, handlers: matchedHandlers});\n                    }\n                }\n            }\n        }\n\n        // Add the remaining (directly-bound) handlers\n        cur = this;\n        if (delegateCount < handlers.length) {\n            handlerQueue.push({elem: cur, handlers: handlers.slice(delegateCount)});\n        }\n\n        return handlerQueue;\n    },\n\n    addProp: function (name, hook) {\n        Object.defineProperty(jQuery.Event.prototype, name, {\n            enumerable: true,\n            configurable: true,\n\n            get: isFunction(hook) ?\n                function () {\n                    if (this.originalEvent) {\n                        return hook(this.originalEvent);\n                    }\n                } :\n                function () {\n                    if (this.originalEvent) {\n                        return this.originalEvent[name];\n                    }\n                },\n\n            set: function (value) {\n                Object.defineProperty(this, name, {\n                    enumerable: true,\n                    configurable: true,\n                    writable: true,\n                    value: value\n                });\n            }\n        });\n    },\n\n    fix: function (originalEvent) {\n        return originalEvent[jQuery.expando] ?\n            originalEvent :\n            new jQuery.Event(originalEvent);\n    },\n\n    special: {\n        load: {\n\n            // Prevent triggered image.load events from bubbling to window.load\n            noBubble: true\n        },\n        focus: {\n\n            // Fire native event if possible so blur/focus sequence is correct\n            trigger: function () {\n                if (this !== safeActiveElement() && this.focus) {\n                    this.focus();\n                    return false;\n                }\n            },\n            delegateType: \"focusin\"\n        },\n        blur: {\n            trigger: function () {\n                if (this === safeActiveElement() && this.blur) {\n                    this.blur();\n                    return false;\n                }\n            },\n            delegateType: \"focusout\"\n        },\n        click: {\n\n            // For checkbox, fire native event so checked state will be right\n            trigger: function () {\n                if (this.type === \"checkbox\" && this.click && nodeName(this, \"input\")) {\n                    this.click();\n                    return false;\n                }\n            },\n\n            // For cross-browser consistency, don't fire native .click() on links\n            _default: function (event) {\n                return nodeName(event.target, \"a\");\n            }\n        },\n\n        beforeunload: {\n            postDispatch: function (event) {\n\n                // Support: Firefox 20+\n                // Firefox doesn't alert if the returnValue field is not set.\n                if (event.result !== undefined && event.originalEvent) {\n                    event.originalEvent.returnValue = event.result;\n                }\n            }\n        }\n    }\n};\n\njQuery.removeEvent = function (elem, type, handle) {\n\n    // This \"if\" is needed for plain objects\n    if (elem.removeEventListener) {\n        elem.removeEventListener(type, handle);\n    }\n};\n\njQuery.Event = function (src, props) {\n\n    // Allow instantiation without the 'new' keyword\n    if (!(this instanceof jQuery.Event)) {\n        return new jQuery.Event(src, props);\n    }\n\n    // Event object\n    if (src && src.type) {\n        this.originalEvent = src;\n        this.type = src.type;\n\n        // Events bubbling up the document may have been marked as prevented\n        // by a handler lower down the tree; reflect the correct value.\n        this.isDefaultPrevented = src.defaultPrevented ||\n        src.defaultPrevented === undefined &&\n\n        // Support: Android <=2.3 only\n        src.returnValue === false ?\n            returnTrue :\n            returnFalse;\n\n        // Create target properties\n        // Support: Safari <=6 - 7 only\n        // Target should not be a text node (#504, #13143)\n        this.target = (src.target && src.target.nodeType === 3) ?\n            src.target.parentNode :\n            src.target;\n\n        this.currentTarget = src.currentTarget;\n        this.relatedTarget = src.relatedTarget;\n\n        // Event type\n    } else {\n        this.type = src;\n    }\n\n    // Put explicitly provided properties onto the event object\n    if (props) {\n        jQuery.extend(this, props);\n    }\n\n    // Create a timestamp if incoming event doesn't have one\n    this.timeStamp = src && src.timeStamp || Date.now();\n\n    // Mark it as fixed\n    this[jQuery.expando] = true;\n};\n\n// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding\n// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html\njQuery.Event.prototype = {\n    constructor: jQuery.Event,\n    isDefaultPrevented: returnFalse,\n    isPropagationStopped: returnFalse,\n    isImmediatePropagationStopped: returnFalse,\n    isSimulated: false,\n\n    preventDefault: function () {\n        var e = this.originalEvent;\n\n        this.isDefaultPrevented = returnTrue;\n\n        if (e && !this.isSimulated) {\n            e.preventDefault();\n        }\n    },\n    stopPropagation: function () {\n        var e = this.originalEvent;\n\n        this.isPropagationStopped = returnTrue;\n\n        if (e && !this.isSimulated) {\n            e.stopPropagation();\n        }\n    },\n    stopImmediatePropagation: function () {\n        var e = this.originalEvent;\n\n        this.isImmediatePropagationStopped = returnTrue;\n\n        if (e && !this.isSimulated) {\n            e.stopImmediatePropagation();\n        }\n\n        this.stopPropagation();\n    }\n};\n\n// Includes all common event props including KeyEvent and MouseEvent specific props\njQuery.each({\n    altKey: true,\n    bubbles: true,\n    cancelable: true,\n    changedTouches: true,\n    ctrlKey: true,\n    detail: true,\n    eventPhase: true,\n    metaKey: true,\n    pageX: true,\n    pageY: true,\n    shiftKey: true,\n    view: true,\n    \"char\": true,\n    charCode: true,\n    key: true,\n    keyCode: true,\n    button: true,\n    buttons: true,\n    clientX: true,\n    clientY: true,\n    offsetX: true,\n    offsetY: true,\n    pointerId: true,\n    pointerType: true,\n    screenX: true,\n    screenY: true,\n    targetTouches: true,\n    toElement: true,\n    touches: true,\n\n    which: function (event) {\n        var button = event.button;\n\n        // Add which for key events\n        if (event.which == null && rkeyEvent.test(event.type)) {\n            return event.charCode != null ? event.charCode : event.keyCode;\n        }\n\n        // Add which for click: 1 === left; 2 === middle; 3 === right\n        if (!event.which && button !== undefined && rmouseEvent.test(event.type)) {\n            if (button & 1) {\n                return 1;\n            }\n\n            if (button & 2) {\n                return 3;\n            }\n\n            if (button & 4) {\n                return 2;\n            }\n\n            return 0;\n        }\n\n        return event.which;\n    }\n}, jQuery.event.addProp);\n\n// Create mouseenter/leave events using mouseover/out and event-time checks\n// so that event delegation works in jQuery.\n// Do the same for pointerenter/pointerleave and pointerover/pointerout\n//\n// Support: Safari 7 only\n// Safari sends mouseenter too often; see:\n// https://bugs.chromium.org/p/chromium/issues/detail?id=470258\n// for the description of the bug (it existed in older Chrome versions as well).\njQuery.each({\n    mouseenter: \"mouseover\",\n    mouseleave: \"mouseout\",\n    pointerenter: \"pointerover\",\n    pointerleave: \"pointerout\"\n}, function (orig, fix) {\n    jQuery.event.special[orig] = {\n        delegateType: fix,\n        bindType: fix,\n\n        handle: function (event) {\n            var ret,\n                target = this,\n                related = event.relatedTarget,\n                handleObj = event.handleObj;\n\n            // For mouseenter/leave call the handler if related is outside the target.\n            // NB: No relatedTarget if the mouse left/entered the browser window\n            if (!related || (related !== target && !jQuery.contains(target, related))) {\n                event.type = handleObj.origType;\n                ret = handleObj.handler.apply(this, arguments);\n                event.type = fix;\n            }\n            return ret;\n        }\n    };\n});\n\njQuery.fn.extend({\n\n    on: function (types, selector, data, fn) {\n        return on(this, types, selector, data, fn);\n    },\n    one: function (types, selector, data, fn) {\n        return on(this, types, selector, data, fn, 1);\n    },\n    off: function (types, selector, fn) {\n        var handleObj, type;\n        if (types && types.preventDefault && types.handleObj) {\n\n            // ( event )  dispatched jQuery.Event\n            handleObj = types.handleObj;\n            jQuery(types.delegateTarget).off(\n                handleObj.namespace ?\n                    handleObj.origType + \".\" + handleObj.namespace :\n                    handleObj.origType,\n                handleObj.selector,\n                handleObj.handler\n            );\n            return this;\n        }\n        if (typeof types === \"object\") {\n\n            // ( types-object [, selector] )\n            for (type in types) {\n                this.off(type, selector, types[type]);\n            }\n            return this;\n        }\n        if (selector === false || typeof selector === \"function\") {\n\n            // ( types [, fn] )\n            fn = selector;\n            selector = undefined;\n        }\n        if (fn === false) {\n            fn = returnFalse;\n        }\n        return this.each(function () {\n            jQuery.event.remove(this, types, fn, selector);\n        });\n    }\n});\n\n\nvar\n\n    /* eslint-disable max-len */\n\n    // See https://github.com/eslint/eslint/issues/3229\n    rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([a-z][^\\/\\0>\\x20\\t\\r\\n\\f]*)[^>]*)\\/>/gi,\n\n    /* eslint-enable */\n\n    // Support: IE <=10 - 11, Edge 12 - 13 only\n    // In IE/Edge using regex groups here causes severe slowdowns.\n    // See https://connect.microsoft.com/IE/feedback/details/1736512/\n    rnoInnerhtml = /<script|<style|<link/i,\n\n    // checked=\"checked\" or checked\n    rchecked = /checked\\s*(?:[^=]|=\\s*.checked.)/i,\n    rcleanScript = /^\\s*<!(?:\\[CDATA\\[|--)|(?:\\]\\]|--)>\\s*$/g;\n\n// Prefer a tbody over its parent table for containing new rows\nfunction manipulationTarget(elem, content) {\n    if (nodeName(elem, \"table\") &&\n        nodeName(content.nodeType !== 11 ? content : content.firstChild, \"tr\")) {\n\n        return jQuery(elem).children(\"tbody\")[0] || elem;\n    }\n\n    return elem;\n}\n\n// Replace/restore the type attribute of script elements for safe DOM manipulation\nfunction disableScript(elem) {\n    elem.type = (elem.getAttribute(\"type\") !== null) + \"/\" + elem.type;\n    return elem;\n}\n\nfunction restoreScript(elem) {\n    if ((elem.type || \"\").slice(0, 5) === \"true/\") {\n        elem.type = elem.type.slice(5);\n    } else {\n        elem.removeAttribute(\"type\");\n    }\n\n    return elem;\n}\n\nfunction cloneCopyEvent(src, dest) {\n    var i, l, type, pdataOld, pdataCur, udataOld, udataCur, events;\n\n    if (dest.nodeType !== 1) {\n        return;\n    }\n\n    // 1. Copy private data: events, handlers, etc.\n    if (dataPriv.hasData(src)) {\n        pdataOld = dataPriv.access(src);\n        pdataCur = dataPriv.set(dest, pdataOld);\n        events = pdataOld.events;\n\n        if (events) {\n            delete pdataCur.handle;\n            pdataCur.events = {};\n\n            for (type in events) {\n                for (i = 0, l = events[type].length; i < l; i++) {\n                    jQuery.event.add(dest, type, events[type][i]);\n                }\n            }\n        }\n    }\n\n    // 2. Copy user data\n    if (dataUser.hasData(src)) {\n        udataOld = dataUser.access(src);\n        udataCur = jQuery.extend({}, udataOld);\n\n        dataUser.set(dest, udataCur);\n    }\n}\n\n// Fix IE bugs, see support tests\nfunction fixInput(src, dest) {\n    var nodeName = dest.nodeName.toLowerCase();\n\n    // Fails to persist the checked state of a cloned checkbox or radio button.\n    if (nodeName === \"input\" && rcheckableType.test(src.type)) {\n        dest.checked = src.checked;\n\n        // Fails to return the selected option to the default selected state when cloning options\n    } else if (nodeName === \"input\" || nodeName === \"textarea\") {\n        dest.defaultValue = src.defaultValue;\n    }\n}\n\nfunction domManip(collection, args, callback, ignored) {\n\n    // Flatten any nested arrays\n    args = concat.apply([], args);\n\n    var fragment, first, scripts, hasScripts, node, doc,\n        i = 0,\n        l = collection.length,\n        iNoClone = l - 1,\n        value = args[0],\n        valueIsFunction = isFunction(value);\n\n    // We can't cloneNode fragments that contain checked, in WebKit\n    if (valueIsFunction ||\n        (l > 1 && typeof value === \"string\" &&\n            !support.checkClone && rchecked.test(value))) {\n        return collection.each(function (index) {\n            var self = collection.eq(index);\n            if (valueIsFunction) {\n                args[0] = value.call(this, index, self.html());\n            }\n            domManip(self, args, callback, ignored);\n        });\n    }\n\n    if (l) {\n        fragment = buildFragment(args, collection[0].ownerDocument, false, collection, ignored);\n        first = fragment.firstChild;\n\n        if (fragment.childNodes.length === 1) {\n            fragment = first;\n        }\n\n        // Require either new content or an interest in ignored elements to invoke the callback\n        if (first || ignored) {\n            scripts = jQuery.map(getAll(fragment, \"script\"), disableScript);\n            hasScripts = scripts.length;\n\n            // Use the original fragment for the last item\n            // instead of the first because it can end up\n            // being emptied incorrectly in certain situations (#8070).\n            for (; i < l; i++) {\n                node = fragment;\n\n                if (i !== iNoClone) {\n                    node = jQuery.clone(node, true, true);\n\n                    // Keep references to cloned scripts for later restoration\n                    if (hasScripts) {\n\n                        // Support: Android <=4.0 only, PhantomJS 1 only\n                        // push.apply(_, arraylike) throws on ancient WebKit\n                        jQuery.merge(scripts, getAll(node, \"script\"));\n                    }\n                }\n\n                callback.call(collection[i], node, i);\n            }\n\n            if (hasScripts) {\n                doc = scripts[scripts.length - 1].ownerDocument;\n\n                // Reenable scripts\n                jQuery.map(scripts, restoreScript);\n\n                // Evaluate executable scripts on first document insertion\n                for (i = 0; i < hasScripts; i++) {\n                    node = scripts[i];\n                    if (rscriptType.test(node.type || \"\") &&\n                        !dataPriv.access(node, \"globalEval\") &&\n                        jQuery.contains(doc, node)) {\n\n                        if (node.src && (node.type || \"\").toLowerCase() !== \"module\") {\n\n                            // Optional AJAX dependency, but won't run scripts if not present\n                            if (jQuery._evalUrl) {\n                                jQuery._evalUrl(node.src);\n                            }\n                        } else {\n                            DOMEval(node.textContent.replace(rcleanScript, \"\"), doc, node);\n                        }\n                    }\n                }\n            }\n        }\n    }\n\n    return collection;\n}\n\nfunction remove(elem, selector, keepData) {\n    var node,\n        nodes = selector ? jQuery.filter(selector, elem) : elem,\n        i = 0;\n\n    for (; (node = nodes[i]) != null; i++) {\n        if (!keepData && node.nodeType === 1) {\n            jQuery.cleanData(getAll(node));\n        }\n\n        if (node.parentNode) {\n            if (keepData && jQuery.contains(node.ownerDocument, node)) {\n                setGlobalEval(getAll(node, \"script\"));\n            }\n            node.parentNode.removeChild(node);\n        }\n    }\n\n    return elem;\n}\n\njQuery.extend({\n    htmlPrefilter: function (html) {\n        return html.replace(rxhtmlTag, \"<$1></$2>\");\n    },\n\n    clone: function (elem, dataAndEvents, deepDataAndEvents) {\n        var i, l, srcElements, destElements,\n            clone = elem.cloneNode(true),\n            inPage = jQuery.contains(elem.ownerDocument, elem);\n\n        // Fix IE cloning issues\n        if (!support.noCloneChecked && (elem.nodeType === 1 || elem.nodeType === 11) &&\n            !jQuery.isXMLDoc(elem)) {\n\n            // We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2\n            destElements = getAll(clone);\n            srcElements = getAll(elem);\n\n            for (i = 0, l = srcElements.length; i < l; i++) {\n                fixInput(srcElements[i], destElements[i]);\n            }\n        }\n\n        // Copy the events from the original to the clone\n        if (dataAndEvents) {\n            if (deepDataAndEvents) {\n                srcElements = srcElements || getAll(elem);\n                destElements = destElements || getAll(clone);\n\n                for (i = 0, l = srcElements.length; i < l; i++) {\n                    cloneCopyEvent(srcElements[i], destElements[i]);\n                }\n            } else {\n                cloneCopyEvent(elem, clone);\n            }\n        }\n\n        // Preserve script evaluation history\n        destElements = getAll(clone, \"script\");\n        if (destElements.length > 0) {\n            setGlobalEval(destElements, !inPage && getAll(elem, \"script\"));\n        }\n\n        // Return the cloned set\n        return clone;\n    },\n\n    cleanData: function (elems) {\n        var data, elem, type,\n            special = jQuery.event.special,\n            i = 0;\n\n        for (; (elem = elems[i]) !== undefined; i++) {\n            if (acceptData(elem)) {\n                if ((data = elem[dataPriv.expando])) {\n                    if (data.events) {\n                        for (type in data.events) {\n                            if (special[type]) {\n                                jQuery.event.remove(elem, type);\n\n                                // This is a shortcut to avoid jQuery.event.remove's overhead\n                            } else {\n                                jQuery.removeEvent(elem, type, data.handle);\n                            }\n                        }\n                    }\n\n                    // Support: Chrome <=35 - 45+\n                    // Assign undefined instead of using delete, see Data#remove\n                    elem[dataPriv.expando] = undefined;\n                }\n                if (elem[dataUser.expando]) {\n\n                    // Support: Chrome <=35 - 45+\n                    // Assign undefined instead of using delete, see Data#remove\n                    elem[dataUser.expando] = undefined;\n                }\n            }\n        }\n    }\n});\n\njQuery.fn.extend({\n    detach: function (selector) {\n        return remove(this, selector, true);\n    },\n\n    remove: function (selector) {\n        return remove(this, selector);\n    },\n\n    text: function (value) {\n        return access(this, function (value) {\n            return value === undefined ?\n                jQuery.text(this) :\n                this.empty().each(function () {\n                    if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) {\n                        this.textContent = value;\n                    }\n                });\n        }, null, value, arguments.length);\n    },\n\n    append: function () {\n        return domManip(this, arguments, function (elem) {\n            if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) {\n                var target = manipulationTarget(this, elem);\n                target.appendChild(elem);\n            }\n        });\n    },\n\n    prepend: function () {\n        return domManip(this, arguments, function (elem) {\n            if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) {\n                var target = manipulationTarget(this, elem);\n                target.insertBefore(elem, target.firstChild);\n            }\n        });\n    },\n\n    before: function () {\n        return domManip(this, arguments, function (elem) {\n            if (this.parentNode) {\n                this.parentNode.insertBefore(elem, this);\n            }\n        });\n    },\n\n    after: function () {\n        return domManip(this, arguments, function (elem) {\n            if (this.parentNode) {\n                this.parentNode.insertBefore(elem, this.nextSibling);\n            }\n        });\n    },\n\n    empty: function () {\n        var elem,\n            i = 0;\n\n        for (; (elem = this[i]) != null; i++) {\n            if (elem.nodeType === 1) {\n\n                // Prevent memory leaks\n                jQuery.cleanData(getAll(elem, false));\n\n                // Remove any remaining nodes\n                elem.textContent = \"\";\n            }\n        }\n\n        return this;\n    },\n\n    clone: function (dataAndEvents, deepDataAndEvents) {\n        dataAndEvents = dataAndEvents == null ? false : dataAndEvents;\n        deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;\n\n        return this.map(function () {\n            return jQuery.clone(this, dataAndEvents, deepDataAndEvents);\n        });\n    },\n\n    html: function (value) {\n        return access(this, function (value) {\n            var elem = this[0] || {},\n                i = 0,\n                l = this.length;\n\n            if (value === undefined && elem.nodeType === 1) {\n                return elem.innerHTML;\n            }\n\n            // See if we can take a shortcut and just use innerHTML\n            if (typeof value === \"string\" && !rnoInnerhtml.test(value) &&\n                !wrapMap[(rtagName.exec(value) || [\"\", \"\"])[1].toLowerCase()]) {\n\n                value = jQuery.htmlPrefilter(value);\n\n                try {\n                    for (; i < l; i++) {\n                        elem = this[i] || {};\n\n                        // Remove element nodes and prevent memory leaks\n                        if (elem.nodeType === 1) {\n                            jQuery.cleanData(getAll(elem, false));\n                            elem.innerHTML = value;\n                        }\n                    }\n\n                    elem = 0;\n\n                    // If using innerHTML throws an exception, use the fallback method\n                } catch (e) {\n                }\n            }\n\n            if (elem) {\n                this.empty().append(value);\n            }\n        }, null, value, arguments.length);\n    },\n\n    replaceWith: function () {\n        var ignored = [];\n\n        // Make the changes, replacing each non-ignored context element with the new content\n        return domManip(this, arguments, function (elem) {\n            var parent = this.parentNode;\n\n            if (jQuery.inArray(this, ignored) < 0) {\n                jQuery.cleanData(getAll(this));\n                if (parent) {\n                    parent.replaceChild(elem, this);\n                }\n            }\n\n            // Force callback invocation\n        }, ignored);\n    }\n});\n\njQuery.each({\n    appendTo: \"append\",\n    prependTo: \"prepend\",\n    insertBefore: \"before\",\n    insertAfter: \"after\",\n    replaceAll: \"replaceWith\"\n}, function (name, original) {\n    jQuery.fn[name] = function (selector) {\n        var elems,\n            ret = [],\n            insert = jQuery(selector),\n            last = insert.length - 1,\n            i = 0;\n\n        for (; i <= last; i++) {\n            elems = i === last ? this : this.clone(true);\n            jQuery(insert[i])[original](elems);\n\n            // Support: Android <=4.0 only, PhantomJS 1 only\n            // .get() because push.apply(_, arraylike) throws on ancient WebKit\n            push.apply(ret, elems.get());\n        }\n\n        return this.pushStack(ret);\n    };\n});\nvar rnumnonpx = new RegExp(\"^(\" + pnum + \")(?!px)[a-z%]+$\", \"i\");\n\nvar getStyles = function (elem) {\n\n    // Support: IE <=11 only, Firefox <=30 (#15098, #14150)\n    // IE throws on elements created in popups\n    // FF meanwhile throws on frame elements through \"defaultView.getComputedStyle\"\n    var view = elem.ownerDocument.defaultView;\n\n    if (!view || !view.opener) {\n        view = window;\n    }\n\n    return view.getComputedStyle(elem);\n};\n\nvar rboxStyle = new RegExp(cssExpand.join(\"|\"), \"i\");\n\n\n(function () {\n\n    // Executing both pixelPosition & boxSizingReliable tests require only one layout\n    // so they're executed at the same time to save the second computation.\n    function computeStyleTests() {\n\n        // This is a singleton, we need to execute it only once\n        if (!div) {\n            return;\n        }\n\n        container.style.cssText = \"position:absolute;left:-11111px;width:60px;\" +\n            \"margin-top:1px;padding:0;border:0\";\n        div.style.cssText =\n            \"position:relative;display:block;box-sizing:border-box;overflow:scroll;\" +\n            \"margin:auto;border:1px;padding:1px;\" +\n            \"width:60%;top:1%\";\n        documentElement.appendChild(container).appendChild(div);\n\n        var divStyle = window.getComputedStyle(div);\n        pixelPositionVal = divStyle.top !== \"1%\";\n\n        // Support: Android 4.0 - 4.3 only, Firefox <=3 - 44\n        reliableMarginLeftVal = roundPixelMeasures(divStyle.marginLeft) === 12;\n\n        // Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3\n        // Some styles come back with percentage values, even though they shouldn't\n        div.style.right = \"60%\";\n        pixelBoxStylesVal = roundPixelMeasures(divStyle.right) === 36;\n\n        // Support: IE 9 - 11 only\n        // Detect misreporting of content dimensions for box-sizing:border-box elements\n        boxSizingReliableVal = roundPixelMeasures(divStyle.width) === 36;\n\n        // Support: IE 9 only\n        // Detect overflow:scroll screwiness (gh-3699)\n        div.style.position = \"absolute\";\n        scrollboxSizeVal = div.offsetWidth === 36 || \"absolute\";\n\n        documentElement.removeChild(container);\n\n        // Nullify the div so it wouldn't be stored in the memory and\n        // it will also be a sign that checks already performed\n        div = null;\n    }\n\n    function roundPixelMeasures(measure) {\n        return Math.round(parseFloat(measure));\n    }\n\n    var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal,\n        reliableMarginLeftVal,\n        container = document.createElement(\"div\"),\n        div = document.createElement(\"div\");\n\n    // Finish early in limited (non-browser) environments\n    if (!div.style) {\n        return;\n    }\n\n    // Support: IE <=9 - 11 only\n    // Style of cloned element affects source element cloned (#8908)\n    div.style.backgroundClip = \"content-box\";\n    div.cloneNode(true).style.backgroundClip = \"\";\n    support.clearCloneStyle = div.style.backgroundClip === \"content-box\";\n\n    jQuery.extend(support, {\n        boxSizingReliable: function () {\n            computeStyleTests();\n            return boxSizingReliableVal;\n        },\n        pixelBoxStyles: function () {\n            computeStyleTests();\n            return pixelBoxStylesVal;\n        },\n        pixelPosition: function () {\n            computeStyleTests();\n            return pixelPositionVal;\n        },\n        reliableMarginLeft: function () {\n            computeStyleTests();\n            return reliableMarginLeftVal;\n        },\n        scrollboxSize: function () {\n            computeStyleTests();\n            return scrollboxSizeVal;\n        }\n    });\n})();\n\n\nfunction curCSS(elem, name, computed) {\n    var width, minWidth, maxWidth, ret,\n\n        // Support: Firefox 51+\n        // Retrieving style before computed somehow\n        // fixes an issue with getting wrong values\n        // on detached elements\n        style = elem.style;\n\n    computed = computed || getStyles(elem);\n\n    // getPropertyValue is needed for:\n    //   .css('filter') (IE 9 only, #12537)\n    //   .css('--customProperty) (#3144)\n    if (computed) {\n        ret = computed.getPropertyValue(name) || computed[name];\n\n        if (ret === \"\" && !jQuery.contains(elem.ownerDocument, elem)) {\n            ret = jQuery.style(elem, name);\n        }\n\n        // A tribute to the \"awesome hack by Dean Edwards\"\n        // Android Browser returns percentage for some values,\n        // but width seems to be reliably pixels.\n        // This is against the CSSOM draft spec:\n        // https://drafts.csswg.org/cssom/#resolved-values\n        if (!support.pixelBoxStyles() && rnumnonpx.test(ret) && rboxStyle.test(name)) {\n\n            // Remember the original values\n            width = style.width;\n            minWidth = style.minWidth;\n            maxWidth = style.maxWidth;\n\n            // Put in the new values to get a computed value out\n            style.minWidth = style.maxWidth = style.width = ret;\n            ret = computed.width;\n\n            // Revert the changed values\n            style.width = width;\n            style.minWidth = minWidth;\n            style.maxWidth = maxWidth;\n        }\n    }\n\n    return ret !== undefined ?\n\n        // Support: IE <=9 - 11 only\n        // IE returns zIndex value as an integer.\n        ret + \"\" :\n        ret;\n}\n\n\nfunction addGetHookIf(conditionFn, hookFn) {\n\n    // Define the hook, we'll check on the first run if it's really needed.\n    return {\n        get: function () {\n            if (conditionFn()) {\n\n                // Hook not needed (or it's not possible to use it due\n                // to missing dependency), remove it.\n                delete this.get;\n                return;\n            }\n\n            // Hook needed; redefine it so that the support test is not executed again.\n            return (this.get = hookFn).apply(this, arguments);\n        }\n    };\n}\n\n\nvar\n\n    // Swappable if display is none or starts with table\n    // except \"table\", \"table-cell\", or \"table-caption\"\n    // See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display\n    rdisplayswap = /^(none|table(?!-c[ea]).+)/,\n    rcustomProp = /^--/,\n    cssShow = {position: \"absolute\", visibility: \"hidden\", display: \"block\"},\n    cssNormalTransform = {\n        letterSpacing: \"0\",\n        fontWeight: \"400\"\n    },\n\n    cssPrefixes = [\"Webkit\", \"Moz\", \"ms\"],\n    emptyStyle = document.createElement(\"div\").style;\n\n// Return a css property mapped to a potentially vendor prefixed property\nfunction vendorPropName(name) {\n\n    // Shortcut for names that are not vendor prefixed\n    if (name in emptyStyle) {\n        return name;\n    }\n\n    // Check for vendor prefixed names\n    var capName = name[0].toUpperCase() + name.slice(1),\n        i = cssPrefixes.length;\n\n    while (i--) {\n        name = cssPrefixes[i] + capName;\n        if (name in emptyStyle) {\n            return name;\n        }\n    }\n}\n\n// Return a property mapped along what jQuery.cssProps suggests or to\n// a vendor prefixed property.\nfunction finalPropName(name) {\n    var ret = jQuery.cssProps[name];\n    if (!ret) {\n        ret = jQuery.cssProps[name] = vendorPropName(name) || name;\n    }\n    return ret;\n}\n\nfunction setPositiveNumber(elem, value, subtract) {\n\n    // Any relative (+/-) values have already been\n    // normalized at this point\n    var matches = rcssNum.exec(value);\n    return matches ?\n\n        // Guard against undefined \"subtract\", e.g., when used as in cssHooks\n        Math.max(0, matches[2] - (subtract || 0)) + (matches[3] || \"px\") :\n        value;\n}\n\nfunction boxModelAdjustment(elem, dimension, box, isBorderBox, styles, computedVal) {\n    var i = dimension === \"width\" ? 1 : 0,\n        extra = 0,\n        delta = 0;\n\n    // Adjustment may not be necessary\n    if (box === (isBorderBox ? \"border\" : \"content\")) {\n        return 0;\n    }\n\n    for (; i < 4; i += 2) {\n\n        // Both box models exclude margin\n        if (box === \"margin\") {\n            delta += jQuery.css(elem, box + cssExpand[i], true, styles);\n        }\n\n        // If we get here with a content-box, we're seeking \"padding\" or \"border\" or \"margin\"\n        if (!isBorderBox) {\n\n            // Add padding\n            delta += jQuery.css(elem, \"padding\" + cssExpand[i], true, styles);\n\n            // For \"border\" or \"margin\", add border\n            if (box !== \"padding\") {\n                delta += jQuery.css(elem, \"border\" + cssExpand[i] + \"Width\", true, styles);\n\n                // But still keep track of it otherwise\n            } else {\n                extra += jQuery.css(elem, \"border\" + cssExpand[i] + \"Width\", true, styles);\n            }\n\n            // If we get here with a border-box (content + padding + border), we're seeking \"content\" or\n            // \"padding\" or \"margin\"\n        } else {\n\n            // For \"content\", subtract padding\n            if (box === \"content\") {\n                delta -= jQuery.css(elem, \"padding\" + cssExpand[i], true, styles);\n            }\n\n            // For \"content\" or \"padding\", subtract border\n            if (box !== \"margin\") {\n                delta -= jQuery.css(elem, \"border\" + cssExpand[i] + \"Width\", true, styles);\n            }\n        }\n    }\n\n    // Account for positive content-box scroll gutter when requested by providing computedVal\n    if (!isBorderBox && computedVal >= 0) {\n\n        // offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border\n        // Assuming integer scroll gutter, subtract the rest and round down\n        delta += Math.max(0, Math.ceil(\n            elem[\"offset\" + dimension[0].toUpperCase() + dimension.slice(1)] -\n            computedVal -\n            delta -\n            extra -\n            0.5\n        ));\n    }\n\n    return delta;\n}\n\nfunction getWidthOrHeight(elem, dimension, extra) {\n\n    // Start with computed style\n    var styles = getStyles(elem),\n        val = curCSS(elem, dimension, styles),\n        isBorderBox = jQuery.css(elem, \"boxSizing\", false, styles) === \"border-box\",\n        valueIsBorderBox = isBorderBox;\n\n    // Support: Firefox <=54\n    // Return a confounding non-pixel value or feign ignorance, as appropriate.\n    if (rnumnonpx.test(val)) {\n        if (!extra) {\n            return val;\n        }\n        val = \"auto\";\n    }\n\n    // Check for style in case a browser which returns unreliable values\n    // for getComputedStyle silently falls back to the reliable elem.style\n    valueIsBorderBox = valueIsBorderBox &&\n        (support.boxSizingReliable() || val === elem.style[dimension]);\n\n    // Fall back to offsetWidth/offsetHeight when value is \"auto\"\n    // This happens for inline elements with no explicit setting (gh-3571)\n    // Support: Android <=4.1 - 4.3 only\n    // Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602)\n    if (val === \"auto\" ||\n        !parseFloat(val) && jQuery.css(elem, \"display\", false, styles) === \"inline\") {\n\n        val = elem[\"offset\" + dimension[0].toUpperCase() + dimension.slice(1)];\n\n        // offsetWidth/offsetHeight provide border-box values\n        valueIsBorderBox = true;\n    }\n\n    // Normalize \"\" and auto\n    val = parseFloat(val) || 0;\n\n    // Adjust for the element's box model\n    return (val +\n        boxModelAdjustment(\n            elem,\n            dimension,\n            extra || (isBorderBox ? \"border\" : \"content\"),\n            valueIsBorderBox,\n            styles,\n\n            // Provide the current computed size to request scroll gutter calculation (gh-3589)\n            val\n        )\n    ) + \"px\";\n}\n\njQuery.extend({\n\n    // Add in style property hooks for overriding the default\n    // behavior of getting and setting a style property\n    cssHooks: {\n        opacity: {\n            get: function (elem, computed) {\n                if (computed) {\n\n                    // We should always get a number back from opacity\n                    var ret = curCSS(elem, \"opacity\");\n                    return ret === \"\" ? \"1\" : ret;\n                }\n            }\n        }\n    },\n\n    // Don't automatically add \"px\" to these possibly-unitless properties\n    cssNumber: {\n        \"animationIterationCount\": true,\n        \"columnCount\": true,\n        \"fillOpacity\": true,\n        \"flexGrow\": true,\n        \"flexShrink\": true,\n        \"fontWeight\": true,\n        \"lineHeight\": true,\n        \"opacity\": true,\n        \"order\": true,\n        \"orphans\": true,\n        \"widows\": true,\n        \"zIndex\": true,\n        \"zoom\": true\n    },\n\n    // Add in properties whose names you wish to fix before\n    // setting or getting the value\n    cssProps: {},\n\n    // Get and set the style property on a DOM Node\n    style: function (elem, name, value, extra) {\n\n        // Don't set styles on text and comment nodes\n        if (!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style) {\n            return;\n        }\n\n        // Make sure that we're working with the right name\n        var ret, type, hooks,\n            origName = camelCase(name),\n            isCustomProp = rcustomProp.test(name),\n            style = elem.style;\n\n        // Make sure that we're working with the right name. We don't\n        // want to query the value if it is a CSS custom property\n        // since they are user-defined.\n        if (!isCustomProp) {\n            name = finalPropName(origName);\n        }\n\n        // Gets hook for the prefixed version, then unprefixed version\n        hooks = jQuery.cssHooks[name] || jQuery.cssHooks[origName];\n\n        // Check if we're setting a value\n        if (value !== undefined) {\n            type = typeof value;\n\n            // Convert \"+=\" or \"-=\" to relative numbers (#7345)\n            if (type === \"string\" && (ret = rcssNum.exec(value)) && ret[1]) {\n                value = adjustCSS(elem, name, ret);\n\n                // Fixes bug #9237\n                type = \"number\";\n            }\n\n            // Make sure that null and NaN values aren't set (#7116)\n            if (value == null || value !== value) {\n                return;\n            }\n\n            // If a number was passed in, add the unit (except for certain CSS properties)\n            if (type === \"number\") {\n                value += ret && ret[3] || (jQuery.cssNumber[origName] ? \"\" : \"px\");\n            }\n\n            // background-* props affect original clone's values\n            if (!support.clearCloneStyle && value === \"\" && name.indexOf(\"background\") === 0) {\n                style[name] = \"inherit\";\n            }\n\n            // If a hook was provided, use that value, otherwise just set the specified value\n            if (!hooks || !(\"set\" in hooks) ||\n                (value = hooks.set(elem, value, extra)) !== undefined) {\n\n                if (isCustomProp) {\n                    style.setProperty(name, value);\n                } else {\n                    style[name] = value;\n                }\n            }\n\n        } else {\n\n            // If a hook was provided get the non-computed value from there\n            if (hooks && \"get\" in hooks &&\n                (ret = hooks.get(elem, false, extra)) !== undefined) {\n\n                return ret;\n            }\n\n            // Otherwise just get the value from the style object\n            return style[name];\n        }\n    },\n\n    css: function (elem, name, extra, styles) {\n        var val, num, hooks,\n            origName = camelCase(name),\n            isCustomProp = rcustomProp.test(name);\n\n        // Make sure that we're working with the right name. We don't\n        // want to modify the value if it is a CSS custom property\n        // since they are user-defined.\n        if (!isCustomProp) {\n            name = finalPropName(origName);\n        }\n\n        // Try prefixed name followed by the unprefixed name\n        hooks = jQuery.cssHooks[name] || jQuery.cssHooks[origName];\n\n        // If a hook was provided get the computed value from there\n        if (hooks && \"get\" in hooks) {\n            val = hooks.get(elem, true, extra);\n        }\n\n        // Otherwise, if a way to get the computed value exists, use that\n        if (val === undefined) {\n            val = curCSS(elem, name, styles);\n        }\n\n        // Convert \"normal\" to computed value\n        if (val === \"normal\" && name in cssNormalTransform) {\n            val = cssNormalTransform[name];\n        }\n\n        // Make numeric if forced or a qualifier was provided and val looks numeric\n        if (extra === \"\" || extra) {\n            num = parseFloat(val);\n            return extra === true || isFinite(num) ? num || 0 : val;\n        }\n\n        return val;\n    }\n});\n\njQuery.each([\"height\", \"width\"], function (i, dimension) {\n    jQuery.cssHooks[dimension] = {\n        get: function (elem, computed, extra) {\n            if (computed) {\n\n                // Certain elements can have dimension info if we invisibly show them\n                // but it must have a current display style that would benefit\n                return rdisplayswap.test(jQuery.css(elem, \"display\")) &&\n\n                // Support: Safari 8+\n                // Table columns in Safari have non-zero offsetWidth & zero\n                // getBoundingClientRect().width unless display is changed.\n                // Support: IE <=11 only\n                // Running getBoundingClientRect on a disconnected node\n                // in IE throws an error.\n                (!elem.getClientRects().length || !elem.getBoundingClientRect().width) ?\n                    swap(elem, cssShow, function () {\n                        return getWidthOrHeight(elem, dimension, extra);\n                    }) :\n                    getWidthOrHeight(elem, dimension, extra);\n            }\n        },\n\n        set: function (elem, value, extra) {\n            var matches,\n                styles = getStyles(elem),\n                isBorderBox = jQuery.css(elem, \"boxSizing\", false, styles) === \"border-box\",\n                subtract = extra && boxModelAdjustment(\n                    elem,\n                    dimension,\n                    extra,\n                    isBorderBox,\n                    styles\n                );\n\n            // Account for unreliable border-box dimensions by comparing offset* to computed and\n            // faking a content-box to get border and padding (gh-3699)\n            if (isBorderBox && support.scrollboxSize() === styles.position) {\n                subtract -= Math.ceil(\n                    elem[\"offset\" + dimension[0].toUpperCase() + dimension.slice(1)] -\n                    parseFloat(styles[dimension]) -\n                    boxModelAdjustment(elem, dimension, \"border\", false, styles) -\n                    0.5\n                );\n            }\n\n            // Convert to pixels if value adjustment is needed\n            if (subtract && (matches = rcssNum.exec(value)) &&\n                (matches[3] || \"px\") !== \"px\") {\n\n                elem.style[dimension] = value;\n                value = jQuery.css(elem, dimension);\n            }\n\n            return setPositiveNumber(elem, value, subtract);\n        }\n    };\n});\n\njQuery.cssHooks.marginLeft = addGetHookIf(support.reliableMarginLeft,\n    function (elem, computed) {\n        if (computed) {\n            return (parseFloat(curCSS(elem, \"marginLeft\")) ||\n                elem.getBoundingClientRect().left -\n                swap(elem, {marginLeft: 0}, function () {\n                    return elem.getBoundingClientRect().left;\n                })\n            ) + \"px\";\n        }\n    }\n);\n\n// These hooks are used by animate to expand properties\njQuery.each({\n    margin: \"\",\n    padding: \"\",\n    border: \"Width\"\n}, function (prefix, suffix) {\n    jQuery.cssHooks[prefix + suffix] = {\n        expand: function (value) {\n            var i = 0,\n                expanded = {},\n\n                // Assumes a single number if not a string\n                parts = typeof value === \"string\" ? value.split(\" \") : [value];\n\n            for (; i < 4; i++) {\n                expanded[prefix + cssExpand[i] + suffix] =\n                    parts[i] || parts[i - 2] || parts[0];\n            }\n\n            return expanded;\n        }\n    };\n\n    if (prefix !== \"margin\") {\n        jQuery.cssHooks[prefix + suffix].set = setPositiveNumber;\n    }\n});\n\njQuery.fn.extend({\n    css: function (name, value) {\n        return access(this, function (elem, name, value) {\n            var styles, len,\n                map = {},\n                i = 0;\n\n            if (Array.isArray(name)) {\n                styles = getStyles(elem);\n                len = name.length;\n\n                for (; i < len; i++) {\n                    map[name[i]] = jQuery.css(elem, name[i], false, styles);\n                }\n\n                return map;\n            }\n\n            return value !== undefined ?\n                jQuery.style(elem, name, value) :\n                jQuery.css(elem, name);\n        }, name, value, arguments.length > 1);\n    }\n});\n\n\n// Based off of the plugin by Clint Helfers, with permission.\n// https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/\njQuery.fn.delay = function (time, type) {\n    time = jQuery.fx ? jQuery.fx.speeds[time] || time : time;\n    type = type || \"fx\";\n\n    return this.queue(type, function (next, hooks) {\n        var timeout = window.setTimeout(next, time);\n        hooks.stop = function () {\n            window.clearTimeout(timeout);\n        };\n    });\n};\n\n\n(function () {\n    var input = document.createElement(\"input\"),\n        select = document.createElement(\"select\"),\n        opt = select.appendChild(document.createElement(\"option\"));\n\n    input.type = \"checkbox\";\n\n    // Support: Android <=4.3 only\n    // Default value for a checkbox should be \"on\"\n    support.checkOn = input.value !== \"\";\n\n    // Support: IE <=11 only\n    // Must access selectedIndex to make default options select\n    support.optSelected = opt.selected;\n\n    // Support: IE <=11 only\n    // An input loses its value after becoming a radio\n    input = document.createElement(\"input\");\n    input.value = \"t\";\n    input.type = \"radio\";\n    support.radioValue = input.value === \"t\";\n})();\n\n\nvar boolHook,\n    attrHandle = jQuery.expr.attrHandle;\n\njQuery.fn.extend({\n    attr: function (name, value) {\n        return access(this, jQuery.attr, name, value, arguments.length > 1);\n    },\n\n    removeAttr: function (name) {\n        return this.each(function () {\n            jQuery.removeAttr(this, name);\n        });\n    }\n});\n\njQuery.extend({\n    attr: function (elem, name, value) {\n        var ret, hooks,\n            nType = elem.nodeType;\n\n        // Don't get/set attributes on text, comment and attribute nodes\n        if (nType === 3 || nType === 8 || nType === 2) {\n            return;\n        }\n\n        // Fallback to prop when attributes are not supported\n        if (typeof elem.getAttribute === \"undefined\") {\n            return jQuery.prop(elem, name, value);\n        }\n\n        // Attribute hooks are determined by the lowercase version\n        // Grab necessary hook if one is defined\n        if (nType !== 1 || !jQuery.isXMLDoc(elem)) {\n            hooks = jQuery.attrHooks[name.toLowerCase()] ||\n                (jQuery.expr.match.bool.test(name) ? boolHook : undefined);\n        }\n\n        if (value !== undefined) {\n            if (value === null) {\n                jQuery.removeAttr(elem, name);\n                return;\n            }\n\n            if (hooks && \"set\" in hooks &&\n                (ret = hooks.set(elem, value, name)) !== undefined) {\n                return ret;\n            }\n\n            elem.setAttribute(name, value + \"\");\n            return value;\n        }\n\n        if (hooks && \"get\" in hooks && (ret = hooks.get(elem, name)) !== null) {\n            return ret;\n        }\n\n        ret = jQuery.find.attr(elem, name);\n\n        // Non-existent attributes return null, we normalize to undefined\n        return ret == null ? undefined : ret;\n    },\n\n    attrHooks: {\n        type: {\n            set: function (elem, value) {\n                if (!support.radioValue && value === \"radio\" &&\n                    nodeName(elem, \"input\")) {\n                    var val = elem.value;\n                    elem.setAttribute(\"type\", value);\n                    if (val) {\n                        elem.value = val;\n                    }\n                    return value;\n                }\n            }\n        }\n    },\n\n    removeAttr: function (elem, value) {\n        var name,\n            i = 0,\n\n            // Attribute names can contain non-HTML whitespace characters\n            // https://html.spec.whatwg.org/multipage/syntax.html#attributes-2\n            attrNames = value && value.match(rnothtmlwhite);\n\n        if (attrNames && elem.nodeType === 1) {\n            while ((name = attrNames[i++])) {\n                elem.removeAttribute(name);\n            }\n        }\n    }\n});\n\n// Hooks for boolean attributes\nboolHook = {\n    set: function (elem, value, name) {\n        if (value === false) {\n\n            // Remove boolean attributes when set to false\n            jQuery.removeAttr(elem, name);\n        } else {\n            elem.setAttribute(name, name);\n        }\n        return name;\n    }\n};\n\njQuery.each(jQuery.expr.match.bool.source.match(/\\w+/g), function (i, name) {\n    var getter = attrHandle[name] || jQuery.find.attr;\n\n    attrHandle[name] = function (elem, name, isXML) {\n        var ret, handle,\n            lowercaseName = name.toLowerCase();\n\n        if (!isXML) {\n\n            // Avoid an infinite loop by temporarily removing this function from the getter\n            handle = attrHandle[lowercaseName];\n            attrHandle[lowercaseName] = ret;\n            ret = getter(elem, name, isXML) != null ?\n                lowercaseName :\n                null;\n            attrHandle[lowercaseName] = handle;\n        }\n        return ret;\n    };\n});\n\n\nvar rfocusable = /^(?:input|select|textarea|button)$/i,\n    rclickable = /^(?:a|area)$/i;\n\njQuery.fn.extend({\n    prop: function (name, value) {\n        return access(this, jQuery.prop, name, value, arguments.length > 1);\n    },\n\n    removeProp: function (name) {\n        return this.each(function () {\n            delete this[jQuery.propFix[name] || name];\n        });\n    }\n});\n\njQuery.extend({\n    prop: function (elem, name, value) {\n        var ret, hooks,\n            nType = elem.nodeType;\n\n        // Don't get/set properties on text, comment and attribute nodes\n        if (nType === 3 || nType === 8 || nType === 2) {\n            return;\n        }\n\n        if (nType !== 1 || !jQuery.isXMLDoc(elem)) {\n\n            // Fix name and attach hooks\n            name = jQuery.propFix[name] || name;\n            hooks = jQuery.propHooks[name];\n        }\n\n        if (value !== undefined) {\n            if (hooks && \"set\" in hooks &&\n                (ret = hooks.set(elem, value, name)) !== undefined) {\n                return ret;\n            }\n\n            return (elem[name] = value);\n        }\n\n        if (hooks && \"get\" in hooks && (ret = hooks.get(elem, name)) !== null) {\n            return ret;\n        }\n\n        return elem[name];\n    },\n\n    propHooks: {\n        tabIndex: {\n            get: function (elem) {\n\n                // Support: IE <=9 - 11 only\n                // elem.tabIndex doesn't always return the\n                // correct value when it hasn't been explicitly set\n                // https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/\n                // Use proper attribute retrieval(#12072)\n                var tabindex = jQuery.find.attr(elem, \"tabindex\");\n\n                if (tabindex) {\n                    return parseInt(tabindex, 10);\n                }\n\n                if (\n                    rfocusable.test(elem.nodeName) ||\n                    rclickable.test(elem.nodeName) &&\n                    elem.href\n                ) {\n                    return 0;\n                }\n\n                return -1;\n            }\n        }\n    },\n\n    propFix: {\n        \"for\": \"htmlFor\",\n        \"class\": \"className\"\n    }\n});\n\n// Support: IE <=11 only\n// Accessing the selectedIndex property\n// forces the browser to respect setting selected\n// on the option\n// The getter ensures a default option is selected\n// when in an optgroup\n// eslint rule \"no-unused-expressions\" is disabled for this code\n// since it considers such accessions noop\nif (!support.optSelected) {\n    jQuery.propHooks.selected = {\n        get: function (elem) {\n\n            /* eslint no-unused-expressions: \"off\" */\n\n            var parent = elem.parentNode;\n            if (parent && parent.parentNode) {\n                parent.parentNode.selectedIndex;\n            }\n            return null;\n        },\n        set: function (elem) {\n\n            /* eslint no-unused-expressions: \"off\" */\n\n            var parent = elem.parentNode;\n            if (parent) {\n                parent.selectedIndex;\n\n                if (parent.parentNode) {\n                    parent.parentNode.selectedIndex;\n                }\n            }\n        }\n    };\n}\n\njQuery.each([\n    \"tabIndex\",\n    \"readOnly\",\n    \"maxLength\",\n    \"cellSpacing\",\n    \"cellPadding\",\n    \"rowSpan\",\n    \"colSpan\",\n    \"useMap\",\n    \"frameBorder\",\n    \"contentEditable\"\n], function () {\n    jQuery.propFix[this.toLowerCase()] = this;\n});\n\n\n// Strip and collapse whitespace according to HTML spec\n// https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace\nfunction stripAndCollapse(value) {\n    var tokens = value.match(rnothtmlwhite) || [];\n    return tokens.join(\" \");\n}\n\n\nfunction getClass(elem) {\n    return elem.getAttribute && elem.getAttribute(\"class\") || \"\";\n}\n\nfunction classesToArray(value) {\n    if (Array.isArray(value)) {\n        return value;\n    }\n    if (typeof value === \"string\") {\n        return value.match(rnothtmlwhite) || [];\n    }\n    return [];\n}\n\njQuery.fn.extend({\n    addClass: function (value) {\n        var classes, elem, cur, curValue, clazz, j, finalValue,\n            i = 0;\n\n        if (isFunction(value)) {\n            return this.each(function (j) {\n                jQuery(this).addClass(value.call(this, j, getClass(this)));\n            });\n        }\n\n        classes = classesToArray(value);\n\n        if (classes.length) {\n            while ((elem = this[i++])) {\n                curValue = getClass(elem);\n                cur = elem.nodeType === 1 && (\" \" + stripAndCollapse(curValue) + \" \");\n\n                if (cur) {\n                    j = 0;\n                    while ((clazz = classes[j++])) {\n                        if (cur.indexOf(\" \" + clazz + \" \") < 0) {\n                            cur += clazz + \" \";\n                        }\n                    }\n\n                    // Only assign if different to avoid unneeded rendering.\n                    finalValue = stripAndCollapse(cur);\n                    if (curValue !== finalValue) {\n                        elem.setAttribute(\"class\", finalValue);\n                    }\n                }\n            }\n        }\n\n        return this;\n    },\n\n    removeClass: function (value) {\n        var classes, elem, cur, curValue, clazz, j, finalValue,\n            i = 0;\n\n        if (isFunction(value)) {\n            return this.each(function (j) {\n                jQuery(this).removeClass(value.call(this, j, getClass(this)));\n            });\n        }\n\n        if (!arguments.length) {\n            return this.attr(\"class\", \"\");\n        }\n\n        classes = classesToArray(value);\n\n        if (classes.length) {\n            while ((elem = this[i++])) {\n                curValue = getClass(elem);\n\n                // This expression is here for better compressibility (see addClass)\n                cur = elem.nodeType === 1 && (\" \" + stripAndCollapse(curValue) + \" \");\n\n                if (cur) {\n                    j = 0;\n                    while ((clazz = classes[j++])) {\n\n                        // Remove *all* instances\n                        while (cur.indexOf(\" \" + clazz + \" \") > -1) {\n                            cur = cur.replace(\" \" + clazz + \" \", \" \");\n                        }\n                    }\n\n                    // Only assign if different to avoid unneeded rendering.\n                    finalValue = stripAndCollapse(cur);\n                    if (curValue !== finalValue) {\n                        elem.setAttribute(\"class\", finalValue);\n                    }\n                }\n            }\n        }\n\n        return this;\n    },\n\n    toggleClass: function (value, stateVal) {\n        var type = typeof value,\n            isValidValue = type === \"string\" || Array.isArray(value);\n\n        if (typeof stateVal === \"boolean\" && isValidValue) {\n            return stateVal ? this.addClass(value) : this.removeClass(value);\n        }\n\n        if (isFunction(value)) {\n            return this.each(function (i) {\n                jQuery(this).toggleClass(\n                    value.call(this, i, getClass(this), stateVal),\n                    stateVal\n                );\n            });\n        }\n\n        return this.each(function () {\n            var className, i, self, classNames;\n\n            if (isValidValue) {\n\n                // Toggle individual class names\n                i = 0;\n                self = jQuery(this);\n                classNames = classesToArray(value);\n\n                while ((className = classNames[i++])) {\n\n                    // Check each className given, space separated list\n                    if (self.hasClass(className)) {\n                        self.removeClass(className);\n                    } else {\n                        self.addClass(className);\n                    }\n                }\n\n                // Toggle whole class name\n            } else if (value === undefined || type === \"boolean\") {\n                className = getClass(this);\n                if (className) {\n\n                    // Store className if set\n                    dataPriv.set(this, \"__className__\", className);\n                }\n\n                // If the element has a class name or if we're passed `false`,\n                // then remove the whole classname (if there was one, the above saved it).\n                // Otherwise bring back whatever was previously saved (if anything),\n                // falling back to the empty string if nothing was stored.\n                if (this.setAttribute) {\n                    this.setAttribute(\"class\",\n                        className || value === false ?\n                            \"\" :\n                            dataPriv.get(this, \"__className__\") || \"\"\n                    );\n                }\n            }\n        });\n    },\n\n    hasClass: function (selector) {\n        var className, elem,\n            i = 0;\n\n        className = \" \" + selector + \" \";\n        while ((elem = this[i++])) {\n            if (elem.nodeType === 1 &&\n                (\" \" + stripAndCollapse(getClass(elem)) + \" \").indexOf(className) > -1) {\n                return true;\n            }\n        }\n\n        return false;\n    }\n});\n\n\nvar rreturn = /\\r/g;\n\njQuery.fn.extend({\n    val: function (value) {\n        var hooks, ret, valueIsFunction,\n            elem = this[0];\n\n        if (!arguments.length) {\n            if (elem) {\n                hooks = jQuery.valHooks[elem.type] ||\n                    jQuery.valHooks[elem.nodeName.toLowerCase()];\n\n                if (hooks &&\n                    \"get\" in hooks &&\n                    (ret = hooks.get(elem, \"value\")) !== undefined\n                ) {\n                    return ret;\n                }\n\n                ret = elem.value;\n\n                // Handle most common string cases\n                if (typeof ret === \"string\") {\n                    return ret.replace(rreturn, \"\");\n                }\n\n                // Handle cases where value is null/undef or number\n                return ret == null ? \"\" : ret;\n            }\n\n            return;\n        }\n\n        valueIsFunction = isFunction(value);\n\n        return this.each(function (i) {\n            var val;\n\n            if (this.nodeType !== 1) {\n                return;\n            }\n\n            if (valueIsFunction) {\n                val = value.call(this, i, jQuery(this).val());\n            } else {\n                val = value;\n            }\n\n            // Treat null/undefined as \"\"; convert numbers to string\n            if (val == null) {\n                val = \"\";\n\n            } else if (typeof val === \"number\") {\n                val += \"\";\n\n            } else if (Array.isArray(val)) {\n                val = jQuery.map(val, function (value) {\n                    return value == null ? \"\" : value + \"\";\n                });\n            }\n\n            hooks = jQuery.valHooks[this.type] || jQuery.valHooks[this.nodeName.toLowerCase()];\n\n            // If set returns undefined, fall back to normal setting\n            if (!hooks || !(\"set\" in hooks) || hooks.set(this, val, \"value\") === undefined) {\n                this.value = val;\n            }\n        });\n    }\n});\n\njQuery.extend({\n    valHooks: {\n        option: {\n            get: function (elem) {\n\n                var val = jQuery.find.attr(elem, \"value\");\n                return val != null ?\n                    val :\n\n                    // Support: IE <=10 - 11 only\n                    // option.text throws exceptions (#14686, #14858)\n                    // Strip and collapse whitespace\n                    // https://html.spec.whatwg.org/#strip-and-collapse-whitespace\n                    stripAndCollapse(jQuery.text(elem));\n            }\n        },\n        select: {\n            get: function (elem) {\n                var value, option, i,\n                    options = elem.options,\n                    index = elem.selectedIndex,\n                    one = elem.type === \"select-one\",\n                    values = one ? null : [],\n                    max = one ? index + 1 : options.length;\n\n                if (index < 0) {\n                    i = max;\n\n                } else {\n                    i = one ? index : 0;\n                }\n\n                // Loop through all the selected options\n                for (; i < max; i++) {\n                    option = options[i];\n\n                    // Support: IE <=9 only\n                    // IE8-9 doesn't update selected after form reset (#2551)\n                    if ((option.selected || i === index) &&\n\n                        // Don't return options that are disabled or in a disabled optgroup\n                        !option.disabled &&\n                        (!option.parentNode.disabled ||\n                            !nodeName(option.parentNode, \"optgroup\"))) {\n\n                        // Get the specific value for the option\n                        value = jQuery(option).val();\n\n                        // We don't need an array for one selects\n                        if (one) {\n                            return value;\n                        }\n\n                        // Multi-Selects return an array\n                        values.push(value);\n                    }\n                }\n\n                return values;\n            },\n\n            set: function (elem, value) {\n                var optionSet, option,\n                    options = elem.options,\n                    values = jQuery.makeArray(value),\n                    i = options.length;\n\n                while (i--) {\n                    option = options[i];\n\n                    /* eslint-disable no-cond-assign */\n\n                    if (option.selected =\n                        jQuery.inArray(jQuery.valHooks.option.get(option), values) > -1\n                    ) {\n                        optionSet = true;\n                    }\n\n                    /* eslint-enable no-cond-assign */\n                }\n\n                // Force browsers to behave consistently when non-matching value is set\n                if (!optionSet) {\n                    elem.selectedIndex = -1;\n                }\n                return values;\n            }\n        }\n    }\n});\n\n// Radios and checkboxes getter/setter\njQuery.each([\"radio\", \"checkbox\"], function () {\n    jQuery.valHooks[this] = {\n        set: function (elem, value) {\n            if (Array.isArray(value)) {\n                return (elem.checked = jQuery.inArray(jQuery(elem).val(), value) > -1);\n            }\n        }\n    };\n    if (!support.checkOn) {\n        jQuery.valHooks[this].get = function (elem) {\n            return elem.getAttribute(\"value\") === null ? \"on\" : elem.value;\n        };\n    }\n});\n\n\n// Return jQuery for attributes-only inclusion\n\n\nsupport.focusin = \"onfocusin\" in window;\n\n\nvar rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,\n    stopPropagationCallback = function (e) {\n        e.stopPropagation();\n    };\n\njQuery.extend(jQuery.event, {\n\n    trigger: function (event, data, elem, onlyHandlers) {\n\n        var i, cur, tmp, bubbleType, ontype, handle, special, lastElement,\n            eventPath = [elem || document],\n            type = hasOwn.call(event, \"type\") ? event.type : event,\n            namespaces = hasOwn.call(event, \"namespace\") ? event.namespace.split(\".\") : [];\n\n        cur = lastElement = tmp = elem = elem || document;\n\n        // Don't do events on text and comment nodes\n        if (elem.nodeType === 3 || elem.nodeType === 8) {\n            return;\n        }\n\n        // focus/blur morphs to focusin/out; ensure we're not firing them right now\n        if (rfocusMorph.test(type + jQuery.event.triggered)) {\n            return;\n        }\n\n        if (type.indexOf(\".\") > -1) {\n\n            // Namespaced trigger; create a regexp to match event type in handle()\n            namespaces = type.split(\".\");\n            type = namespaces.shift();\n            namespaces.sort();\n        }\n        ontype = type.indexOf(\":\") < 0 && \"on\" + type;\n\n        // Caller can pass in a jQuery.Event object, Object, or just an event type string\n        event = event[jQuery.expando] ?\n            event :\n            new jQuery.Event(type, typeof event === \"object\" && event);\n\n        // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)\n        event.isTrigger = onlyHandlers ? 2 : 3;\n        event.namespace = namespaces.join(\".\");\n        event.rnamespace = event.namespace ?\n            new RegExp(\"(^|\\\\.)\" + namespaces.join(\"\\\\.(?:.*\\\\.|)\") + \"(\\\\.|$)\") :\n            null;\n\n        // Clean up the event in case it is being reused\n        event.result = undefined;\n        if (!event.target) {\n            event.target = elem;\n        }\n\n        // Clone any incoming data and prepend the event, creating the handler arg list\n        data = data == null ?\n            [event] :\n            jQuery.makeArray(data, [event]);\n\n        // Allow special events to draw outside the lines\n        special = jQuery.event.special[type] || {};\n        if (!onlyHandlers && special.trigger && special.trigger.apply(elem, data) === false) {\n            return;\n        }\n\n        // Determine event propagation path in advance, per W3C events spec (#9951)\n        // Bubble up to document, then to window; watch for a global ownerDocument var (#9724)\n        if (!onlyHandlers && !special.noBubble && !isWindow(elem)) {\n\n            bubbleType = special.delegateType || type;\n            if (!rfocusMorph.test(bubbleType + type)) {\n                cur = cur.parentNode;\n            }\n            for (; cur; cur = cur.parentNode) {\n                eventPath.push(cur);\n                tmp = cur;\n            }\n\n            // Only add window if we got to document (e.g., not plain obj or detached DOM)\n            if (tmp === (elem.ownerDocument || document)) {\n                eventPath.push(tmp.defaultView || tmp.parentWindow || window);\n            }\n        }\n\n        // Fire handlers on the event path\n        i = 0;\n        while ((cur = eventPath[i++]) && !event.isPropagationStopped()) {\n            lastElement = cur;\n            event.type = i > 1 ?\n                bubbleType :\n                special.bindType || type;\n\n            // jQuery handler\n            handle = (dataPriv.get(cur, \"events\") || {})[event.type] &&\n                dataPriv.get(cur, \"handle\");\n            if (handle) {\n                handle.apply(cur, data);\n            }\n\n            // Native handler\n            handle = ontype && cur[ontype];\n            if (handle && handle.apply && acceptData(cur)) {\n                event.result = handle.apply(cur, data);\n                if (event.result === false) {\n                    event.preventDefault();\n                }\n            }\n        }\n        event.type = type;\n\n        // If nobody prevented the default action, do it now\n        if (!onlyHandlers && !event.isDefaultPrevented()) {\n\n            if ((!special._default ||\n                special._default.apply(eventPath.pop(), data) === false) &&\n                acceptData(elem)) {\n\n                // Call a native DOM method on the target with the same name as the event.\n                // Don't do default actions on window, that's where global variables be (#6170)\n                if (ontype && isFunction(elem[type]) && !isWindow(elem)) {\n\n                    // Don't re-trigger an onFOO event when we call its FOO() method\n                    tmp = elem[ontype];\n\n                    if (tmp) {\n                        elem[ontype] = null;\n                    }\n\n                    // Prevent re-triggering of the same event, since we already bubbled it above\n                    jQuery.event.triggered = type;\n\n                    if (event.isPropagationStopped()) {\n                        lastElement.addEventListener(type, stopPropagationCallback);\n                    }\n\n                    elem[type]();\n\n                    if (event.isPropagationStopped()) {\n                        lastElement.removeEventListener(type, stopPropagationCallback);\n                    }\n\n                    jQuery.event.triggered = undefined;\n\n                    if (tmp) {\n                        elem[ontype] = tmp;\n                    }\n                }\n            }\n        }\n\n        return event.result;\n    },\n\n    // Piggyback on a donor event to simulate a different one\n    // Used only for `focus(in | out)` events\n    simulate: function (type, elem, event) {\n        var e = jQuery.extend(\n            new jQuery.Event(),\n            event,\n            {\n                type: type,\n                isSimulated: true\n            }\n        );\n\n        jQuery.event.trigger(e, null, elem);\n    }\n\n});\n\njQuery.fn.extend({\n\n    trigger: function (type, data) {\n        return this.each(function () {\n            jQuery.event.trigger(type, data, this);\n        });\n    },\n    triggerHandler: function (type, data) {\n        var elem = this[0];\n        if (elem) {\n            return jQuery.event.trigger(type, data, elem, true);\n        }\n    }\n});\n\n\n// Support: Firefox <=44\n// Firefox doesn't have focus(in | out) events\n// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787\n//\n// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1\n// focus(in | out) events fire after focus & blur events,\n// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order\n// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857\nif (!support.focusin) {\n    jQuery.each({focus: \"focusin\", blur: \"focusout\"}, function (orig, fix) {\n\n        // Attach a single capturing handler on the document while someone wants focusin/focusout\n        var handler = function (event) {\n            jQuery.event.simulate(fix, event.target, jQuery.event.fix(event));\n        };\n\n        jQuery.event.special[fix] = {\n            setup: function () {\n                var doc = this.ownerDocument || this,\n                    attaches = dataPriv.access(doc, fix);\n\n                if (!attaches) {\n                    doc.addEventListener(orig, handler, true);\n                }\n                dataPriv.access(doc, fix, (attaches || 0) + 1);\n            },\n            teardown: function () {\n                var doc = this.ownerDocument || this,\n                    attaches = dataPriv.access(doc, fix) - 1;\n\n                if (!attaches) {\n                    doc.removeEventListener(orig, handler, true);\n                    dataPriv.remove(doc, fix);\n\n                } else {\n                    dataPriv.access(doc, fix, attaches);\n                }\n            }\n        };\n    });\n}\n\n\nvar\n    rbracket = /\\[\\]$/,\n    rCRLF = /\\r?\\n/g,\n    rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,\n    rsubmittable = /^(?:input|select|textarea|keygen)/i;\n\nfunction buildParams(prefix, obj, traditional, add) {\n    var name;\n\n    if (Array.isArray(obj)) {\n\n        // Serialize array item.\n        jQuery.each(obj, function (i, v) {\n            if (traditional || rbracket.test(prefix)) {\n\n                // Treat each array item as a scalar.\n                add(prefix, v);\n\n            } else {\n\n                // Item is non-scalar (array or object), encode its numeric index.\n                buildParams(\n                    prefix + \"[\" + (typeof v === \"object\" && v != null ? i : \"\") + \"]\",\n                    v,\n                    traditional,\n                    add\n                );\n            }\n        });\n\n    } else if (!traditional && toType(obj) === \"object\") {\n\n        // Serialize object item.\n        for (name in obj) {\n            buildParams(prefix + \"[\" + name + \"]\", obj[name], traditional, add);\n        }\n\n    } else {\n\n        // Serialize scalar item.\n        add(prefix, obj);\n    }\n}\n\n// Serialize an array of form elements or a set of\n// key/values into a query string\njQuery.param = function (a, traditional) {\n    var prefix,\n        s = [],\n        add = function (key, valueOrFunction) {\n\n            // If value is a function, invoke it and use its return value\n            var value = isFunction(valueOrFunction) ?\n                valueOrFunction() :\n                valueOrFunction;\n\n            s[s.length] = encodeURIComponent(key) + \"=\" +\n                encodeURIComponent(value == null ? \"\" : value);\n        };\n\n    // If an array was passed in, assume that it is an array of form elements.\n    if (Array.isArray(a) || (a.jquery && !jQuery.isPlainObject(a))) {\n\n        // Serialize the form elements\n        jQuery.each(a, function () {\n            add(this.name, this.value);\n        });\n\n    } else {\n\n        // If traditional, encode the \"old\" way (the way 1.3.2 or older\n        // did it), otherwise encode params recursively.\n        for (prefix in a) {\n            buildParams(prefix, a[prefix], traditional, add);\n        }\n    }\n\n    // Return the resulting serialization\n    return s.join(\"&\");\n};\n\njQuery.fn.extend({\n    serialize: function () {\n        return jQuery.param(this.serializeArray());\n    },\n    serializeArray: function () {\n        return this.map(function () {\n\n            // Can add propHook for \"elements\" to filter or add form elements\n            var elements = jQuery.prop(this, \"elements\");\n            return elements ? jQuery.makeArray(elements) : this;\n        })\n            .filter(function () {\n                var type = this.type;\n\n                // Use .is( \":disabled\" ) so that fieldset[disabled] works\n                return this.name && !jQuery(this).is(\":disabled\") &&\n                    rsubmittable.test(this.nodeName) && !rsubmitterTypes.test(type) &&\n                    (this.checked || !rcheckableType.test(type));\n            })\n            .map(function (i, elem) {\n                var val = jQuery(this).val();\n\n                if (val == null) {\n                    return null;\n                }\n\n                if (Array.isArray(val)) {\n                    return jQuery.map(val, function (val) {\n                        return {name: elem.name, value: val.replace(rCRLF, \"\\r\\n\")};\n                    });\n                }\n\n                return {name: elem.name, value: val.replace(rCRLF, \"\\r\\n\")};\n            }).get();\n    }\n});\n\n\njQuery.fn.extend({\n    wrapAll: function (html) {\n        var wrap;\n\n        if (this[0]) {\n            if (isFunction(html)) {\n                html = html.call(this[0]);\n            }\n\n            // The elements to wrap the target around\n            wrap = jQuery(html, this[0].ownerDocument).eq(0).clone(true);\n\n            if (this[0].parentNode) {\n                wrap.insertBefore(this[0]);\n            }\n\n            wrap.map(function () {\n                var elem = this;\n\n                while (elem.firstElementChild) {\n                    elem = elem.firstElementChild;\n                }\n\n                return elem;\n            }).append(this);\n        }\n\n        return this;\n    },\n\n    wrapInner: function (html) {\n        if (isFunction(html)) {\n            return this.each(function (i) {\n                jQuery(this).wrapInner(html.call(this, i));\n            });\n        }\n\n        return this.each(function () {\n            var self = jQuery(this),\n                contents = self.contents();\n\n            if (contents.length) {\n                contents.wrapAll(html);\n\n            } else {\n                self.append(html);\n            }\n        });\n    },\n\n    wrap: function (html) {\n        var htmlIsFunction = isFunction(html);\n\n        return this.each(function (i) {\n            jQuery(this).wrapAll(htmlIsFunction ? html.call(this, i) : html);\n        });\n    },\n\n    unwrap: function (selector) {\n        this.parent(selector).not(\"body\").each(function () {\n            jQuery(this).replaceWith(this.childNodes);\n        });\n        return this;\n    }\n});\n\n\njQuery.expr.pseudos.hidden = function (elem) {\n    return !jQuery.expr.pseudos.visible(elem);\n};\njQuery.expr.pseudos.visible = function (elem) {\n    return !!(elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length);\n};\n\n\n// Support: Safari 8 only\n// In Safari 8 documents created via document.implementation.createHTMLDocument\n// collapse sibling forms: the second one becomes a child of the first one.\n// Because of that, this security measure has to be disabled in Safari 8.\n// https://bugs.webkit.org/show_bug.cgi?id=137337\nsupport.createHTMLDocument = (function () {\n    var body = document.implementation.createHTMLDocument(\"\").body;\n    body.innerHTML = \"<form></form><form></form>\";\n    return body.childNodes.length === 2;\n})();\n\n\n// Argument \"data\" should be string of html\n// context (optional): If specified, the fragment will be created in this context,\n// defaults to document\n// keepScripts (optional): If true, will include scripts passed in the html string\njQuery.parseHTML = function (data, context, keepScripts) {\n    if (typeof data !== \"string\") {\n        return [];\n    }\n    if (typeof context === \"boolean\") {\n        keepScripts = context;\n        context = false;\n    }\n\n    var base, parsed, scripts;\n\n    if (!context) {\n\n        // Stop scripts or inline event handlers from being executed immediately\n        // by using document.implementation\n        if (support.createHTMLDocument) {\n            context = document.implementation.createHTMLDocument(\"\");\n\n            // Set the base href for the created document\n            // so any parsed elements with URLs\n            // are based on the document's URL (gh-2965)\n            base = context.createElement(\"base\");\n            base.href = document.location.href;\n            context.head.appendChild(base);\n        } else {\n            context = document;\n        }\n    }\n\n    parsed = rsingleTag.exec(data);\n    scripts = !keepScripts && [];\n\n    // Single tag\n    if (parsed) {\n        return [context.createElement(parsed[1])];\n    }\n\n    parsed = buildFragment([data], context, scripts);\n\n    if (scripts && scripts.length) {\n        jQuery(scripts).remove();\n    }\n\n    return jQuery.merge([], parsed.childNodes);\n};\n\n\njQuery.offset = {\n    setOffset: function (elem, options, i) {\n        var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,\n            position = jQuery.css(elem, \"position\"),\n            curElem = jQuery(elem),\n            props = {};\n\n        // Set position first, in-case top/left are set even on static elem\n        if (position === \"static\") {\n            elem.style.position = \"relative\";\n        }\n\n        curOffset = curElem.offset();\n        curCSSTop = jQuery.css(elem, \"top\");\n        curCSSLeft = jQuery.css(elem, \"left\");\n        calculatePosition = (position === \"absolute\" || position === \"fixed\") &&\n            (curCSSTop + curCSSLeft).indexOf(\"auto\") > -1;\n\n        // Need to be able to calculate position if either\n        // top or left is auto and position is either absolute or fixed\n        if (calculatePosition) {\n            curPosition = curElem.position();\n            curTop = curPosition.top;\n            curLeft = curPosition.left;\n\n        } else {\n            curTop = parseFloat(curCSSTop) || 0;\n            curLeft = parseFloat(curCSSLeft) || 0;\n        }\n\n        if (isFunction(options)) {\n\n            // Use jQuery.extend here to allow modification of coordinates argument (gh-1848)\n            options = options.call(elem, i, jQuery.extend({}, curOffset));\n        }\n\n        if (options.top != null) {\n            props.top = (options.top - curOffset.top) + curTop;\n        }\n        if (options.left != null) {\n            props.left = (options.left - curOffset.left) + curLeft;\n        }\n\n        if (\"using\" in options) {\n            options.using.call(elem, props);\n\n        } else {\n            curElem.css(props);\n        }\n    }\n};\n\njQuery.fn.extend({\n\n    // offset() relates an element's border box to the document origin\n    offset: function (options) {\n\n        // Preserve chaining for setter\n        if (arguments.length) {\n            return options === undefined ?\n                this :\n                this.each(function (i) {\n                    jQuery.offset.setOffset(this, options, i);\n                });\n        }\n\n        var rect, win,\n            elem = this[0];\n\n        if (!elem) {\n            return;\n        }\n\n        // Return zeros for disconnected and hidden (display: none) elements (gh-2310)\n        // Support: IE <=11 only\n        // Running getBoundingClientRect on a\n        // disconnected node in IE throws an error\n        if (!elem.getClientRects().length) {\n            return {top: 0, left: 0};\n        }\n\n        // Get document-relative position by adding viewport scroll to viewport-relative gBCR\n        rect = elem.getBoundingClientRect();\n        win = elem.ownerDocument.defaultView;\n        return {\n            top: rect.top + win.pageYOffset,\n            left: rect.left + win.pageXOffset\n        };\n    },\n\n    // position() relates an element's margin box to its offset parent's padding box\n    // This corresponds to the behavior of CSS absolute positioning\n    position: function () {\n        if (!this[0]) {\n            return;\n        }\n\n        var offsetParent, offset, doc,\n            elem = this[0],\n            parentOffset = {top: 0, left: 0};\n\n        // position:fixed elements are offset from the viewport, which itself always has zero offset\n        if (jQuery.css(elem, \"position\") === \"fixed\") {\n\n            // Assume position:fixed implies availability of getBoundingClientRect\n            offset = elem.getBoundingClientRect();\n\n        } else {\n            offset = this.offset();\n\n            // Account for the *real* offset parent, which can be the document or its root element\n            // when a statically positioned element is identified\n            doc = elem.ownerDocument;\n            offsetParent = elem.offsetParent || doc.documentElement;\n            while (offsetParent &&\n            (offsetParent === doc.body || offsetParent === doc.documentElement) &&\n            jQuery.css(offsetParent, \"position\") === \"static\") {\n\n                offsetParent = offsetParent.parentNode;\n            }\n            if (offsetParent && offsetParent !== elem && offsetParent.nodeType === 1) {\n\n                // Incorporate borders into its offset, since they are outside its content origin\n                parentOffset = jQuery(offsetParent).offset();\n                parentOffset.top += jQuery.css(offsetParent, \"borderTopWidth\", true);\n                parentOffset.left += jQuery.css(offsetParent, \"borderLeftWidth\", true);\n            }\n        }\n\n        // Subtract parent offsets and element margins\n        return {\n            top: offset.top - parentOffset.top - jQuery.css(elem, \"marginTop\", true),\n            left: offset.left - parentOffset.left - jQuery.css(elem, \"marginLeft\", true)\n        };\n    },\n\n    // This method will return documentElement in the following cases:\n    // 1) For the element inside the iframe without offsetParent, this method will return\n    //    documentElement of the parent window\n    // 2) For the hidden or detached element\n    // 3) For body or html element, i.e. in case of the html node - it will return itself\n    //\n    // but those exceptions were never presented as a real life use-cases\n    // and might be considered as more preferable results.\n    //\n    // This logic, however, is not guaranteed and can change at any point in the future\n    offsetParent: function () {\n        return this.map(function () {\n            var offsetParent = this.offsetParent;\n\n            while (offsetParent && jQuery.css(offsetParent, \"position\") === \"static\") {\n                offsetParent = offsetParent.offsetParent;\n            }\n\n            return offsetParent || documentElement;\n        });\n    }\n});\n\n// Create scrollLeft and scrollTop methods\njQuery.each({scrollLeft: \"pageXOffset\", scrollTop: \"pageYOffset\"}, function (method, prop) {\n    var top = \"pageYOffset\" === prop;\n\n    jQuery.fn[method] = function (val) {\n        return access(this, function (elem, method, val) {\n\n            // Coalesce documents and windows\n            var win;\n            if (isWindow(elem)) {\n                win = elem;\n            } else if (elem.nodeType === 9) {\n                win = elem.defaultView;\n            }\n\n            if (val === undefined) {\n                return win ? win[prop] : elem[method];\n            }\n\n            if (win) {\n                win.scrollTo(\n                    !top ? val : win.pageXOffset,\n                    top ? val : win.pageYOffset\n                );\n\n            } else {\n                elem[method] = val;\n            }\n        }, method, val, arguments.length);\n    };\n});\n\n// Support: Safari <=7 - 9.1, Chrome <=37 - 49\n// Add the top/left cssHooks using jQuery.fn.position\n// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084\n// Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=589347\n// getComputedStyle returns percent when specified for top/left/bottom/right;\n// rather than make the css module depend on the offset module, just check for it here\njQuery.each([\"top\", \"left\"], function (i, prop) {\n    jQuery.cssHooks[prop] = addGetHookIf(support.pixelPosition,\n        function (elem, computed) {\n            if (computed) {\n                computed = curCSS(elem, prop);\n\n                // If curCSS returns percentage, fallback to offset\n                return rnumnonpx.test(computed) ?\n                    jQuery(elem).position()[prop] + \"px\" :\n                    computed;\n            }\n        }\n    );\n});\n\n\n// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods\njQuery.each({Height: \"height\", Width: \"width\"}, function (name, type) {\n    jQuery.each({padding: \"inner\" + name, content: type, \"\": \"outer\" + name},\n        function (defaultExtra, funcName) {\n\n            // Margin is only for outerHeight, outerWidth\n            jQuery.fn[funcName] = function (margin, value) {\n                var chainable = arguments.length && (defaultExtra || typeof margin !== \"boolean\"),\n                    extra = defaultExtra || (margin === true || value === true ? \"margin\" : \"border\");\n\n                return access(this, function (elem, type, value) {\n                    var doc;\n\n                    if (isWindow(elem)) {\n\n                        // $( window ).outerWidth/Height return w/h including scrollbars (gh-1729)\n                        return funcName.indexOf(\"outer\") === 0 ?\n                            elem[\"inner\" + name] :\n                            elem.document.documentElement[\"client\" + name];\n                    }\n\n                    // Get document width or height\n                    if (elem.nodeType === 9) {\n                        doc = elem.documentElement;\n\n                        // Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],\n                        // whichever is greatest\n                        return Math.max(\n                            elem.body[\"scroll\" + name], doc[\"scroll\" + name],\n                            elem.body[\"offset\" + name], doc[\"offset\" + name],\n                            doc[\"client\" + name]\n                        );\n                    }\n\n                    return value === undefined ?\n\n                        // Get width or height on the element, requesting but not forcing parseFloat\n                        jQuery.css(elem, type, extra) :\n\n                        // Set width or height on the element\n                        jQuery.style(elem, type, value, extra);\n                }, type, chainable ? margin : undefined, chainable);\n            };\n        });\n});\n\n\njQuery.each((\"blur focus focusin focusout resize scroll click dblclick \" +\n    \"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave \" +\n    \"change select submit keydown keypress keyup contextmenu\").split(\" \"),\n    function (i, name) {\n\n        // Handle event binding\n        jQuery.fn[name] = function (data, fn) {\n            return arguments.length > 0 ?\n                this.on(name, null, data, fn) :\n                this.trigger(name);\n        };\n    });\n\njQuery.fn.extend({\n    hover: function (fnOver, fnOut) {\n        return this.mouseenter(fnOver).mouseleave(fnOut || fnOver);\n    }\n});\n\n\njQuery.fn.extend({\n\n    bind: function (types, data, fn) {\n        return this.on(types, null, data, fn);\n    },\n    unbind: function (types, fn) {\n        return this.off(types, null, fn);\n    },\n\n    delegate: function (selector, types, data, fn) {\n        return this.on(types, selector, data, fn);\n    },\n    undelegate: function (selector, types, fn) {\n\n        // ( namespace ) or ( selector, types [, fn] )\n        return arguments.length === 1 ?\n            this.off(selector, \"**\") :\n            this.off(types, selector || \"**\", fn);\n    }\n});\n\n// Bind a function to a context, optionally partially applying any\n// arguments.\n// jQuery.proxy is deprecated to promote standards (specifically Function#bind)\n// However, it is not slated for removal any time soon\njQuery.proxy = function (fn, context) {\n    var tmp, args, proxy;\n\n    if (typeof context === \"string\") {\n        tmp = fn[context];\n        context = fn;\n        fn = tmp;\n    }\n\n    // Quick check to determine if target is callable, in the spec\n    // this throws a TypeError, but we will just return undefined.\n    if (!isFunction(fn)) {\n        return undefined;\n    }\n\n    // Simulated bind\n    args = slice.call(arguments, 2);\n    proxy = function () {\n        return fn.apply(context || this, args.concat(slice.call(arguments)));\n    };\n\n    // Set the guid of unique handler to the same of original handler, so it can be removed\n    proxy.guid = fn.guid = fn.guid || jQuery.guid++;\n\n    return proxy;\n};\n\njQuery.holdReady = function (hold) {\n    if (hold) {\n        jQuery.readyWait++;\n    } else {\n        jQuery.ready(true);\n    }\n};\njQuery.isArray = Array.isArray;\njQuery.parseJSON = JSON.parse;\njQuery.nodeName = nodeName;\njQuery.isFunction = isFunction;\njQuery.isWindow = isWindow;\njQuery.camelCase = camelCase;\njQuery.type = toType;\n\njQuery.now = Date.now;\n\njQuery.isNumeric = function (obj) {\n\n    // As of jQuery 3.0, isNumeric is limited to\n    // strings and numbers (primitives or objects)\n    // that can be coerced to finite numbers (gh-2662)\n    var type = jQuery.type(obj);\n    return (type === \"number\" || type === \"string\") &&\n\n        // parseFloat NaNs numeric-cast false positives (\"\")\n        // ...but misinterprets leading-number strings, particularly hex literals (\"0x...\")\n        // subtraction forces infinities to NaN\n        !isNaN(obj - parseFloat(obj));\n};\n\nconst $ = jQuery;\n\nexport default $;","function div(options) {\n    return create$1(\"div\", options);\n}\n\nfunction create$1(tag, options) {\n    const elem = document.createElement(tag);\n    if (options) {\n        if (options.class) {\n            elem.classList.add(options.class);\n        }\n        if (options.id) {\n            elem.id = options.id;\n        }\n        if(options.style) {\n            applyStyle(elem, options.style);\n        }\n    }\n    return elem;\n}\n\nfunction hide(elem) {\n    const cssStyle = getComputedStyle(elem);\n    if(cssStyle.display !== \"none\") {\n        elem._initialDisplay = cssStyle.display;\n    }\n    elem.style.display = \"none\";\n}\n\nfunction show(elem) {\n    const currentDisplay = getComputedStyle(elem).display;\n    if (currentDisplay === \"none\") {\n        const d = elem._initialDisplay || \"block\";\n        elem.style.display = d;\n    }\n}\n\nfunction hideAll(selector) {\n    document.querySelectorAll(selector).forEach(elem => { hide(elem); });\n}\n\nfunction empty(elem) {\n    while(elem.firstChild){\n        elem.removeChild(elem.firstChild);\n    }\n}\n\nfunction offset(elem) {\n    // Return zeros for disconnected and hidden (display: none) elements (gh-2310)\n    // Support: IE <=11 only\n    // Running getBoundingClientRect on a\n    // disconnected node in IE throws an error\n    if (!elem.getClientRects().length) {\n        return {top: 0, left: 0};\n    }\n\n    // Get document-relative position by adding viewport scroll to viewport-relative gBCR\n    const rect = elem.getBoundingClientRect();\n    const win = elem.ownerDocument.defaultView;\n    return {\n        top: rect.top + win.pageYOffset,\n        left: rect.left + win.pageXOffset\n    };\n}\n\nfunction pageCoordinates(e) {\n\n    if (e.type.startsWith(\"touch\")) {\n        const touch = e.touches[0];\n        return {x: touch.pageX, y: touch.pageY};\n    } else {\n        return {x: e.pageX, y: e.pageY}\n    }\n}\n\nconst relativeDOMBBox = (parentElement, childElement) => {\n    const { x: x_p, y: y_p, width: width_p, height: height_p } = parentElement.getBoundingClientRect();\n    const { x: x_c, y: y_c, width: width_c, height: height_c } = childElement.getBoundingClientRect();\n    return { x: (x_c - x_p), y: (y_c - y_p), width: width_c, height:height_c };\n};\n\nfunction applyStyle(elem, style) {\n    for (let key of Object.keys(style)) {\n        elem.style[key] = style[key];\n    }\n}\n\nfunction guid  () {\n    return (\"0000\" + (Math.random() * Math.pow(36, 4) << 0).toString(36)).slice(-4);\n}\n\nlet getMouseXY = (domElement, { clientX, clientY }) => {\n\n    // DOMRect object with eight properties: left, top, right, bottom, x, y, width, height\n    const { left, top, width, height } = domElement.getBoundingClientRect();\n\n    const x = clientX - left;\n    const y = clientY - top;\n    return { x, y, xNormalized: x/width, yNormalized: y/height, width, height };\n\n};\n\n/**\n * Translate the mouse coordinates for the event to the coordinates for the given target element\n * @param event\n * @param domElement\n * @returns {{x: number, y: number}}\n */\nfunction translateMouseCoordinates(event, domElement) {\n\n    const { clientX, clientY } = event;\n    return getMouseXY(domElement, { clientX, clientY });\n\n}\n\nvar domUtils = /*#__PURE__*/Object.freeze({\n    __proto__: null,\n    applyStyle: applyStyle,\n    create: create$1,\n    div: div,\n    empty: empty,\n    guid: guid,\n    hide: hide,\n    hideAll: hideAll,\n    offset: offset,\n    pageCoordinates: pageCoordinates,\n    relativeDOMBBox: relativeDOMBBox,\n    show: show,\n    translateMouseCoordinates: translateMouseCoordinates\n});\n\n/*! @license DOMPurify 3.0.5 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.0.5/LICENSE */\n\nconst {\n  entries,\n  setPrototypeOf,\n  isFrozen,\n  getPrototypeOf,\n  getOwnPropertyDescriptor\n} = Object;\nlet {\n  freeze,\n  seal,\n  create\n} = Object; // eslint-disable-line import/no-mutable-exports\n\nlet {\n  apply,\n  construct\n} = typeof Reflect !== 'undefined' && Reflect;\n\nif (!apply) {\n  apply = function apply(fun, thisValue, args) {\n    return fun.apply(thisValue, args);\n  };\n}\n\nif (!freeze) {\n  freeze = function freeze(x) {\n    return x;\n  };\n}\n\nif (!seal) {\n  seal = function seal(x) {\n    return x;\n  };\n}\n\nif (!construct) {\n  construct = function construct(Func, args) {\n    return new Func(...args);\n  };\n}\n\nconst arrayForEach = unapply(Array.prototype.forEach);\nconst arrayPop = unapply(Array.prototype.pop);\nconst arrayPush = unapply(Array.prototype.push);\nconst stringToLowerCase = unapply(String.prototype.toLowerCase);\nconst stringToString = unapply(String.prototype.toString);\nconst stringMatch = unapply(String.prototype.match);\nconst stringReplace = unapply(String.prototype.replace);\nconst stringIndexOf = unapply(String.prototype.indexOf);\nconst stringTrim = unapply(String.prototype.trim);\nconst regExpTest = unapply(RegExp.prototype.test);\nconst typeErrorCreate = unconstruct(TypeError);\nfunction unapply(func) {\n  return function (thisArg) {\n    for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n      args[_key - 1] = arguments[_key];\n    }\n\n    return apply(func, thisArg, args);\n  };\n}\nfunction unconstruct(func) {\n  return function () {\n    for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n      args[_key2] = arguments[_key2];\n    }\n\n    return construct(func, args);\n  };\n}\n/* Add properties to a lookup table */\n\nfunction addToSet(set, array, transformCaseFunc) {\n  var _transformCaseFunc;\n\n  transformCaseFunc = (_transformCaseFunc = transformCaseFunc) !== null && _transformCaseFunc !== void 0 ? _transformCaseFunc : stringToLowerCase;\n\n  if (setPrototypeOf) {\n    // Make 'in' and truthy checks like Boolean(set.constructor)\n    // independent of any properties defined on Object.prototype.\n    // Prevent prototype setters from intercepting set as a this value.\n    setPrototypeOf(set, null);\n  }\n\n  let l = array.length;\n\n  while (l--) {\n    let element = array[l];\n\n    if (typeof element === 'string') {\n      const lcElement = transformCaseFunc(element);\n\n      if (lcElement !== element) {\n        // Config presets (e.g. tags.js, attrs.js) are immutable.\n        if (!isFrozen(array)) {\n          array[l] = lcElement;\n        }\n\n        element = lcElement;\n      }\n    }\n\n    set[element] = true;\n  }\n\n  return set;\n}\n/* Shallow clone an object */\n\nfunction clone(object) {\n  const newObject = create(null);\n\n  for (const [property, value] of entries(object)) {\n    newObject[property] = value;\n  }\n\n  return newObject;\n}\n/* This method automatically checks if the prop is function\n * or getter and behaves accordingly. */\n\nfunction lookupGetter(object, prop) {\n  while (object !== null) {\n    const desc = getOwnPropertyDescriptor(object, prop);\n\n    if (desc) {\n      if (desc.get) {\n        return unapply(desc.get);\n      }\n\n      if (typeof desc.value === 'function') {\n        return unapply(desc.value);\n      }\n    }\n\n    object = getPrototypeOf(object);\n  }\n\n  function fallbackValue(element) {\n    console.warn('fallback value for', element);\n    return null;\n  }\n\n  return fallbackValue;\n}\n\nconst html$1 = freeze(['a', 'abbr', 'acronym', 'address', 'area', 'article', 'aside', 'audio', 'b', 'bdi', 'bdo', 'big', 'blink', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'center', 'cite', 'code', 'col', 'colgroup', 'content', 'data', 'datalist', 'dd', 'decorator', 'del', 'details', 'dfn', 'dialog', 'dir', 'div', 'dl', 'dt', 'element', 'em', 'fieldset', 'figcaption', 'figure', 'font', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'i', 'img', 'input', 'ins', 'kbd', 'label', 'legend', 'li', 'main', 'map', 'mark', 'marquee', 'menu', 'menuitem', 'meter', 'nav', 'nobr', 'ol', 'optgroup', 'option', 'output', 'p', 'picture', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'section', 'select', 'shadow', 'small', 'source', 'spacer', 'span', 'strike', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'time', 'tr', 'track', 'tt', 'u', 'ul', 'var', 'video', 'wbr']); // SVG\n\nconst svg$1 = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'view', 'vkern']);\nconst svgFilters = freeze(['feBlend', 'feColorMatrix', 'feComponentTransfer', 'feComposite', 'feConvolveMatrix', 'feDiffuseLighting', 'feDisplacementMap', 'feDistantLight', 'feDropShadow', 'feFlood', 'feFuncA', 'feFuncB', 'feFuncG', 'feFuncR', 'feGaussianBlur', 'feImage', 'feMerge', 'feMergeNode', 'feMorphology', 'feOffset', 'fePointLight', 'feSpecularLighting', 'feSpotLight', 'feTile', 'feTurbulence']); // List of SVG elements that are disallowed by default.\n// We still need to know them so that we can do namespace\n// checks properly in case one wants to add them to\n// allow-list.\n\nconst svgDisallowed = freeze(['animate', 'color-profile', 'cursor', 'discard', 'font-face', 'font-face-format', 'font-face-name', 'font-face-src', 'font-face-uri', 'foreignobject', 'hatch', 'hatchpath', 'mesh', 'meshgradient', 'meshpatch', 'meshrow', 'missing-glyph', 'script', 'set', 'solidcolor', 'unknown', 'use']);\nconst mathMl$1 = freeze(['math', 'menclose', 'merror', 'mfenced', 'mfrac', 'mglyph', 'mi', 'mlabeledtr', 'mmultiscripts', 'mn', 'mo', 'mover', 'mpadded', 'mphantom', 'mroot', 'mrow', 'ms', 'mspace', 'msqrt', 'mstyle', 'msub', 'msup', 'msubsup', 'mtable', 'mtd', 'mtext', 'mtr', 'munder', 'munderover', 'mprescripts']); // Similarly to SVG, we want to know all MathML elements,\n// even those that we disallow by default.\n\nconst mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']);\nconst text = freeze(['#text']);\n\nconst html = freeze(['accept', 'action', 'align', 'alt', 'autocapitalize', 'autocomplete', 'autopictureinpicture', 'autoplay', 'background', 'bgcolor', 'border', 'capture', 'cellpadding', 'cellspacing', 'checked', 'cite', 'class', 'clear', 'color', 'cols', 'colspan', 'controls', 'controlslist', 'coords', 'crossorigin', 'datetime', 'decoding', 'default', 'dir', 'disabled', 'disablepictureinpicture', 'disableremoteplayback', 'download', 'draggable', 'enctype', 'enterkeyhint', 'face', 'for', 'headers', 'height', 'hidden', 'high', 'href', 'hreflang', 'id', 'inputmode', 'integrity', 'ismap', 'kind', 'label', 'lang', 'list', 'loading', 'loop', 'low', 'max', 'maxlength', 'media', 'method', 'min', 'minlength', 'multiple', 'muted', 'name', 'nonce', 'noshade', 'novalidate', 'nowrap', 'open', 'optimum', 'pattern', 'placeholder', 'playsinline', 'poster', 'preload', 'pubdate', 'radiogroup', 'readonly', 'rel', 'required', 'rev', 'reversed', 'role', 'rows', 'rowspan', 'spellcheck', 'scope', 'selected', 'shape', 'size', 'sizes', 'span', 'srclang', 'start', 'src', 'srcset', 'step', 'style', 'summary', 'tabindex', 'title', 'translate', 'type', 'usemap', 'valign', 'value', 'width', 'xmlns', 'slot']);\nconst svg = freeze(['accent-height', 'accumulate', 'additive', 'alignment-baseline', 'ascent', 'attributename', 'attributetype', 'azimuth', 'basefrequency', 'baseline-shift', 'begin', 'bias', 'by', 'class', 'clip', 'clippathunits', 'clip-path', 'clip-rule', 'color', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'cx', 'cy', 'd', 'dx', 'dy', 'diffuseconstant', 'direction', 'display', 'divisor', 'dur', 'edgemode', 'elevation', 'end', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'filterunits', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'fx', 'fy', 'g1', 'g2', 'glyph-name', 'glyphref', 'gradientunits', 'gradienttransform', 'height', 'href', 'id', 'image-rendering', 'in', 'in2', 'k', 'k1', 'k2', 'k3', 'k4', 'kerning', 'keypoints', 'keysplines', 'keytimes', 'lang', 'lengthadjust', 'letter-spacing', 'kernelmatrix', 'kernelunitlength', 'lighting-color', 'local', 'marker-end', 'marker-mid', 'marker-start', 'markerheight', 'markerunits', 'markerwidth', 'maskcontentunits', 'maskunits', 'max', 'mask', 'media', 'method', 'mode', 'min', 'name', 'numoctaves', 'offset', 'operator', 'opacity', 'order', 'orient', 'orientation', 'origin', 'overflow', 'paint-order', 'path', 'pathlength', 'patterncontentunits', 'patterntransform', 'patternunits', 'points', 'preservealpha', 'preserveaspectratio', 'primitiveunits', 'r', 'rx', 'ry', 'radius', 'refx', 'refy', 'repeatcount', 'repeatdur', 'restart', 'result', 'rotate', 'scale', 'seed', 'shape-rendering', 'specularconstant', 'specularexponent', 'spreadmethod', 'startoffset', 'stddeviation', 'stitchtiles', 'stop-color', 'stop-opacity', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke', 'stroke-width', 'style', 'surfacescale', 'systemlanguage', 'tabindex', 'targetx', 'targety', 'transform', 'transform-origin', 'text-anchor', 'text-decoration', 'text-rendering', 'textlength', 'type', 'u1', 'u2', 'unicode', 'values', 'viewbox', 'visibility', 'version', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'width', 'word-spacing', 'wrap', 'writing-mode', 'xchannelselector', 'ychannelselector', 'x', 'x1', 'x2', 'xmlns', 'y', 'y1', 'y2', 'z', 'zoomandpan']);\nconst mathMl = freeze(['accent', 'accentunder', 'align', 'bevelled', 'close', 'columnsalign', 'columnlines', 'columnspan', 'denomalign', 'depth', 'dir', 'display', 'displaystyle', 'encoding', 'fence', 'frame', 'height', 'href', 'id', 'largeop', 'length', 'linethickness', 'lspace', 'lquote', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant', 'maxsize', 'minsize', 'movablelimits', 'notation', 'numalign', 'open', 'rowalign', 'rowlines', 'rowspacing', 'rowspan', 'rspace', 'rquote', 'scriptlevel', 'scriptminsize', 'scriptsizemultiplier', 'selection', 'separator', 'separators', 'stretchy', 'subscriptshift', 'supscriptshift', 'symmetric', 'voffset', 'width', 'xmlns']);\nconst xml = freeze(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']);\n\nconst MUSTACHE_EXPR = seal(/\\{\\{[\\w\\W]*|[\\w\\W]*\\}\\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode\n\nconst ERB_EXPR = seal(/<%[\\w\\W]*|[\\w\\W]*%>/gm);\nconst TMPLIT_EXPR = seal(/\\${[\\w\\W]*}/gm);\nconst DATA_ATTR = seal(/^data-[\\-\\w.\\u00B7-\\uFFFF]/); // eslint-disable-line no-useless-escape\n\nconst ARIA_ATTR = seal(/^aria-[\\-\\w]+$/); // eslint-disable-line no-useless-escape\n\nconst IS_ALLOWED_URI = seal(/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp):|[^a-z]|[a-z+.\\-]+(?:[^a-z+.\\-:]|$))/i // eslint-disable-line no-useless-escape\n);\nconst IS_SCRIPT_OR_DATA = seal(/^(?:\\w+script|data):/i);\nconst ATTR_WHITESPACE = seal(/[\\u0000-\\u0020\\u00A0\\u1680\\u180E\\u2000-\\u2029\\u205F\\u3000]/g // eslint-disable-line no-control-regex\n);\nconst DOCTYPE_NAME = seal(/^html$/i);\n\nvar EXPRESSIONS = /*#__PURE__*/Object.freeze({\n  __proto__: null,\n  MUSTACHE_EXPR: MUSTACHE_EXPR,\n  ERB_EXPR: ERB_EXPR,\n  TMPLIT_EXPR: TMPLIT_EXPR,\n  DATA_ATTR: DATA_ATTR,\n  ARIA_ATTR: ARIA_ATTR,\n  IS_ALLOWED_URI: IS_ALLOWED_URI,\n  IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA,\n  ATTR_WHITESPACE: ATTR_WHITESPACE,\n  DOCTYPE_NAME: DOCTYPE_NAME\n});\n\nconst getGlobal = () => typeof window === 'undefined' ? null : window;\n/**\n * Creates a no-op policy for internal use only.\n * Don't export this function outside this module!\n * @param {?TrustedTypePolicyFactory} trustedTypes The policy factory.\n * @param {HTMLScriptElement} purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).\n * @return {?TrustedTypePolicy} The policy created (or null, if Trusted Types\n * are not supported or creating the policy failed).\n */\n\n\nconst _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) {\n  if (typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function') {\n    return null;\n  } // Allow the callers to control the unique policy name\n  // by adding a data-tt-policy-suffix to the script element with the DOMPurify.\n  // Policy creation with duplicate names throws in Trusted Types.\n\n\n  let suffix = null;\n  const ATTR_NAME = 'data-tt-policy-suffix';\n\n  if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {\n    suffix = purifyHostElement.getAttribute(ATTR_NAME);\n  }\n\n  const policyName = 'dompurify' + (suffix ? '#' + suffix : '');\n\n  try {\n    return trustedTypes.createPolicy(policyName, {\n      createHTML(html) {\n        return html;\n      },\n\n      createScriptURL(scriptUrl) {\n        return scriptUrl;\n      }\n\n    });\n  } catch (_) {\n    // Policy creation failed (most likely another DOMPurify script has\n    // already run). Skip creating the policy, as this will only cause errors\n    // if TT are enforced.\n    console.warn('TrustedTypes policy ' + policyName + ' could not be created.');\n    return null;\n  }\n};\n\nfunction createDOMPurify() {\n  let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal();\n\n  const DOMPurify = root => createDOMPurify(root);\n  /**\n   * Version label, exposed for easier checks\n   * if DOMPurify is up to date or not\n   */\n\n\n  DOMPurify.version = '3.0.5';\n  /**\n   * Array of elements that DOMPurify removed during sanitation.\n   * Empty if nothing was removed.\n   */\n\n  DOMPurify.removed = [];\n\n  if (!window || !window.document || window.document.nodeType !== 9) {\n    // Not running in a browser, provide a factory function\n    // so that you can pass your own Window\n    DOMPurify.isSupported = false;\n    return DOMPurify;\n  }\n\n  const originalDocument = window.document;\n  const currentScript = originalDocument.currentScript;\n  let {\n    document\n  } = window;\n  const {\n    DocumentFragment,\n    HTMLTemplateElement,\n    Node,\n    Element,\n    NodeFilter,\n    NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap,\n    HTMLFormElement,\n    DOMParser,\n    trustedTypes\n  } = window;\n  const ElementPrototype = Element.prototype;\n  const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');\n  const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');\n  const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');\n  const getParentNode = lookupGetter(ElementPrototype, 'parentNode'); // As per issue #47, the web-components registry is inherited by a\n  // new document created via createHTMLDocument. As per the spec\n  // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)\n  // a new empty registry is used when creating a template contents owner\n  // document, so we use that as our parent document to ensure nothing\n  // is inherited.\n\n  if (typeof HTMLTemplateElement === 'function') {\n    const template = document.createElement('template');\n\n    if (template.content && template.content.ownerDocument) {\n      document = template.content.ownerDocument;\n    }\n  }\n\n  let trustedTypesPolicy;\n  let emptyHTML = '';\n  const {\n    implementation,\n    createNodeIterator,\n    createDocumentFragment,\n    getElementsByTagName\n  } = document;\n  const {\n    importNode\n  } = originalDocument;\n  let hooks = {};\n  /**\n   * Expose whether this browser supports running the full DOMPurify.\n   */\n\n  DOMPurify.isSupported = typeof entries === 'function' && typeof getParentNode === 'function' && implementation && implementation.createHTMLDocument !== undefined;\n  const {\n    MUSTACHE_EXPR,\n    ERB_EXPR,\n    TMPLIT_EXPR,\n    DATA_ATTR,\n    ARIA_ATTR,\n    IS_SCRIPT_OR_DATA,\n    ATTR_WHITESPACE\n  } = EXPRESSIONS;\n  let {\n    IS_ALLOWED_URI: IS_ALLOWED_URI$1\n  } = EXPRESSIONS;\n  /**\n   * We consider the elements and attributes below to be safe. Ideally\n   * don't add any new ones but feel free to remove unwanted ones.\n   */\n\n  /* allowed element names */\n\n  let ALLOWED_TAGS = null;\n  const DEFAULT_ALLOWED_TAGS = addToSet({}, [...html$1, ...svg$1, ...svgFilters, ...mathMl$1, ...text]);\n  /* Allowed attribute names */\n\n  let ALLOWED_ATTR = null;\n  const DEFAULT_ALLOWED_ATTR = addToSet({}, [...html, ...svg, ...mathMl, ...xml]);\n  /*\n   * Configure how DOMPUrify should handle custom elements and their attributes as well as customized built-in elements.\n   * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)\n   * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)\n   * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.\n   */\n\n  let CUSTOM_ELEMENT_HANDLING = Object.seal(Object.create(null, {\n    tagNameCheck: {\n      writable: true,\n      configurable: false,\n      enumerable: true,\n      value: null\n    },\n    attributeNameCheck: {\n      writable: true,\n      configurable: false,\n      enumerable: true,\n      value: null\n    },\n    allowCustomizedBuiltInElements: {\n      writable: true,\n      configurable: false,\n      enumerable: true,\n      value: false\n    }\n  }));\n  /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */\n\n  let FORBID_TAGS = null;\n  /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */\n\n  let FORBID_ATTR = null;\n  /* Decide if ARIA attributes are okay */\n\n  let ALLOW_ARIA_ATTR = true;\n  /* Decide if custom data attributes are okay */\n\n  let ALLOW_DATA_ATTR = true;\n  /* Decide if unknown protocols are okay */\n\n  let ALLOW_UNKNOWN_PROTOCOLS = false;\n  /* Decide if self-closing tags in attributes are allowed.\n   * Usually removed due to a mXSS issue in jQuery 3.0 */\n\n  let ALLOW_SELF_CLOSE_IN_ATTR = true;\n  /* Output should be safe for common template engines.\n   * This means, DOMPurify removes data attributes, mustaches and ERB\n   */\n\n  let SAFE_FOR_TEMPLATES = false;\n  /* Decide if document with <html>... should be returned */\n\n  let WHOLE_DOCUMENT = false;\n  /* Track whether config is already set on this instance of DOMPurify. */\n\n  let SET_CONFIG = false;\n  /* Decide if all elements (e.g. style, script) must be children of\n   * document.body. By default, browsers might move them to document.head */\n\n  let FORCE_BODY = false;\n  /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html\n   * string (or a TrustedHTML object if Trusted Types are supported).\n   * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead\n   */\n\n  let RETURN_DOM = false;\n  /* Decide if a DOM `DocumentFragment` should be returned, instead of a html\n   * string  (or a TrustedHTML object if Trusted Types are supported) */\n\n  let RETURN_DOM_FRAGMENT = false;\n  /* Try to return a Trusted Type object instead of a string, return a string in\n   * case Trusted Types are not supported  */\n\n  let RETURN_TRUSTED_TYPE = false;\n  /* Output should be free from DOM clobbering attacks?\n   * This sanitizes markups named with colliding, clobberable built-in DOM APIs.\n   */\n\n  let SANITIZE_DOM = true;\n  /* Achieve full DOM Clobbering protection by isolating the namespace of named\n   * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.\n   *\n   * HTML/DOM spec rules that enable DOM Clobbering:\n   *   - Named Access on Window (§7.3.3)\n   *   - DOM Tree Accessors (§3.1.5)\n   *   - Form Element Parent-Child Relations (§4.10.3)\n   *   - Iframe srcdoc / Nested WindowProxies (§4.8.5)\n   *   - HTMLCollection (§4.2.10.2)\n   *\n   * Namespace isolation is implemented by prefixing `id` and `name` attributes\n   * with a constant string, i.e., `user-content-`\n   */\n\n  let SANITIZE_NAMED_PROPS = false;\n  const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';\n  /* Keep element content when removing element? */\n\n  let KEEP_CONTENT = true;\n  /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead\n   * of importing it into a new Document and returning a sanitized copy */\n\n  let IN_PLACE = false;\n  /* Allow usage of profiles like html, svg and mathMl */\n\n  let USE_PROFILES = {};\n  /* Tags to ignore content of when KEEP_CONTENT is true */\n\n  let FORBID_CONTENTS = null;\n  const DEFAULT_FORBID_CONTENTS = addToSet({}, ['annotation-xml', 'audio', 'colgroup', 'desc', 'foreignobject', 'head', 'iframe', 'math', 'mi', 'mn', 'mo', 'ms', 'mtext', 'noembed', 'noframes', 'noscript', 'plaintext', 'script', 'style', 'svg', 'template', 'thead', 'title', 'video', 'xmp']);\n  /* Tags that are safe for data: URIs */\n\n  let DATA_URI_TAGS = null;\n  const DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']);\n  /* Attributes safe for values like \"javascript:\" */\n\n  let URI_SAFE_ATTRIBUTES = null;\n  const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']);\n  const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';\n  const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';\n  const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';\n  /* Document namespace */\n\n  let NAMESPACE = HTML_NAMESPACE;\n  let IS_EMPTY_INPUT = false;\n  /* Allowed XHTML+XML namespaces */\n\n  let ALLOWED_NAMESPACES = null;\n  const DEFAULT_ALLOWED_NAMESPACES = addToSet({}, [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE], stringToString);\n  /* Parsing of strict XHTML documents */\n\n  let PARSER_MEDIA_TYPE;\n  const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];\n  const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';\n  let transformCaseFunc;\n  /* Keep a reference to config to pass to hooks */\n\n  let CONFIG = null;\n  /* Ideally, do not touch anything below this line */\n\n  /* ______________________________________________ */\n\n  const formElement = document.createElement('form');\n\n  const isRegexOrFunction = function isRegexOrFunction(testValue) {\n    return testValue instanceof RegExp || testValue instanceof Function;\n  };\n  /**\n   * _parseConfig\n   *\n   * @param  {Object} cfg optional config literal\n   */\n  // eslint-disable-next-line complexity\n\n\n  const _parseConfig = function _parseConfig(cfg) {\n    if (CONFIG && CONFIG === cfg) {\n      return;\n    }\n    /* Shield configuration object from tampering */\n\n\n    if (!cfg || typeof cfg !== 'object') {\n      cfg = {};\n    }\n    /* Shield configuration object from prototype pollution */\n\n\n    cfg = clone(cfg);\n    PARSER_MEDIA_TYPE = // eslint-disable-next-line unicorn/prefer-includes\n    SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? PARSER_MEDIA_TYPE = DEFAULT_PARSER_MEDIA_TYPE : PARSER_MEDIA_TYPE = cfg.PARSER_MEDIA_TYPE; // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.\n\n    transformCaseFunc = PARSER_MEDIA_TYPE === 'application/xhtml+xml' ? stringToString : stringToLowerCase;\n    /* Set configuration parameters */\n\n    ALLOWED_TAGS = 'ALLOWED_TAGS' in cfg ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS;\n    ALLOWED_ATTR = 'ALLOWED_ATTR' in cfg ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR;\n    ALLOWED_NAMESPACES = 'ALLOWED_NAMESPACES' in cfg ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES;\n    URI_SAFE_ATTRIBUTES = 'ADD_URI_SAFE_ATTR' in cfg ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), // eslint-disable-line indent\n    cfg.ADD_URI_SAFE_ATTR, // eslint-disable-line indent\n    transformCaseFunc // eslint-disable-line indent\n    ) // eslint-disable-line indent\n    : DEFAULT_URI_SAFE_ATTRIBUTES;\n    DATA_URI_TAGS = 'ADD_DATA_URI_TAGS' in cfg ? addToSet(clone(DEFAULT_DATA_URI_TAGS), // eslint-disable-line indent\n    cfg.ADD_DATA_URI_TAGS, // eslint-disable-line indent\n    transformCaseFunc // eslint-disable-line indent\n    ) // eslint-disable-line indent\n    : DEFAULT_DATA_URI_TAGS;\n    FORBID_CONTENTS = 'FORBID_CONTENTS' in cfg ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS;\n    FORBID_TAGS = 'FORBID_TAGS' in cfg ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : {};\n    FORBID_ATTR = 'FORBID_ATTR' in cfg ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : {};\n    USE_PROFILES = 'USE_PROFILES' in cfg ? cfg.USE_PROFILES : false;\n    ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true\n\n    ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true\n\n    ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false\n\n    ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true\n\n    SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false\n\n    WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false\n\n    RETURN_DOM = cfg.RETURN_DOM || false; // Default false\n\n    RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false\n\n    RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false\n\n    FORCE_BODY = cfg.FORCE_BODY || false; // Default false\n\n    SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true\n\n    SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false\n\n    KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true\n\n    IN_PLACE = cfg.IN_PLACE || false; // Default false\n\n    IS_ALLOWED_URI$1 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI;\n    NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;\n    CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {};\n\n    if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)) {\n      CUSTOM_ELEMENT_HANDLING.tagNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck;\n    }\n\n    if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)) {\n      CUSTOM_ELEMENT_HANDLING.attributeNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck;\n    }\n\n    if (cfg.CUSTOM_ELEMENT_HANDLING && typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements === 'boolean') {\n      CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements = cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements;\n    }\n\n    if (SAFE_FOR_TEMPLATES) {\n      ALLOW_DATA_ATTR = false;\n    }\n\n    if (RETURN_DOM_FRAGMENT) {\n      RETURN_DOM = true;\n    }\n    /* Parse profile info */\n\n\n    if (USE_PROFILES) {\n      ALLOWED_TAGS = addToSet({}, [...text]);\n      ALLOWED_ATTR = [];\n\n      if (USE_PROFILES.html === true) {\n        addToSet(ALLOWED_TAGS, html$1);\n        addToSet(ALLOWED_ATTR, html);\n      }\n\n      if (USE_PROFILES.svg === true) {\n        addToSet(ALLOWED_TAGS, svg$1);\n        addToSet(ALLOWED_ATTR, svg);\n        addToSet(ALLOWED_ATTR, xml);\n      }\n\n      if (USE_PROFILES.svgFilters === true) {\n        addToSet(ALLOWED_TAGS, svgFilters);\n        addToSet(ALLOWED_ATTR, svg);\n        addToSet(ALLOWED_ATTR, xml);\n      }\n\n      if (USE_PROFILES.mathMl === true) {\n        addToSet(ALLOWED_TAGS, mathMl$1);\n        addToSet(ALLOWED_ATTR, mathMl);\n        addToSet(ALLOWED_ATTR, xml);\n      }\n    }\n    /* Merge configuration parameters */\n\n\n    if (cfg.ADD_TAGS) {\n      if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {\n        ALLOWED_TAGS = clone(ALLOWED_TAGS);\n      }\n\n      addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);\n    }\n\n    if (cfg.ADD_ATTR) {\n      if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {\n        ALLOWED_ATTR = clone(ALLOWED_ATTR);\n      }\n\n      addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);\n    }\n\n    if (cfg.ADD_URI_SAFE_ATTR) {\n      addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);\n    }\n\n    if (cfg.FORBID_CONTENTS) {\n      if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {\n        FORBID_CONTENTS = clone(FORBID_CONTENTS);\n      }\n\n      addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);\n    }\n    /* Add #text in case KEEP_CONTENT is set to true */\n\n\n    if (KEEP_CONTENT) {\n      ALLOWED_TAGS['#text'] = true;\n    }\n    /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */\n\n\n    if (WHOLE_DOCUMENT) {\n      addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);\n    }\n    /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */\n\n\n    if (ALLOWED_TAGS.table) {\n      addToSet(ALLOWED_TAGS, ['tbody']);\n      delete FORBID_TAGS.tbody;\n    }\n\n    if (cfg.TRUSTED_TYPES_POLICY) {\n      if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {\n        throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a \"createHTML\" hook.');\n      }\n\n      if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {\n        throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a \"createScriptURL\" hook.');\n      } // Overwrite existing TrustedTypes policy.\n\n\n      trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY; // Sign local variables required by `sanitize`.\n\n      emptyHTML = trustedTypesPolicy.createHTML('');\n    } else {\n      // Uninitialized policy, attempt to initialize the internal dompurify policy.\n      if (trustedTypesPolicy === undefined) {\n        trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript);\n      } // If creating the internal policy succeeded sign internal variables.\n\n\n      if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {\n        emptyHTML = trustedTypesPolicy.createHTML('');\n      }\n    } // Prevent further manipulation of configuration.\n    // Not available in IE8, Safari 5, etc.\n\n\n    if (freeze) {\n      freeze(cfg);\n    }\n\n    CONFIG = cfg;\n  };\n\n  const MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']);\n  const HTML_INTEGRATION_POINTS = addToSet({}, ['foreignobject', 'desc', 'title', 'annotation-xml']); // Certain elements are allowed in both SVG and HTML\n  // namespace. We need to specify them explicitly\n  // so that they don't get erroneously deleted from\n  // HTML namespace.\n\n  const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']);\n  /* Keep track of all possible SVG and MathML tags\n   * so that we can perform the namespace checks\n   * correctly. */\n\n  const ALL_SVG_TAGS = addToSet({}, svg$1);\n  addToSet(ALL_SVG_TAGS, svgFilters);\n  addToSet(ALL_SVG_TAGS, svgDisallowed);\n  const ALL_MATHML_TAGS = addToSet({}, mathMl$1);\n  addToSet(ALL_MATHML_TAGS, mathMlDisallowed);\n  /**\n   *\n   *\n   * @param  {Element} element a DOM element whose namespace is being checked\n   * @returns {boolean} Return false if the element has a\n   *  namespace that a spec-compliant parser would never\n   *  return. Return true otherwise.\n   */\n\n  const _checkValidNamespace = function _checkValidNamespace(element) {\n    let parent = getParentNode(element); // In JSDOM, if we're inside shadow DOM, then parentNode\n    // can be null. We just simulate parent in this case.\n\n    if (!parent || !parent.tagName) {\n      parent = {\n        namespaceURI: NAMESPACE,\n        tagName: 'template'\n      };\n    }\n\n    const tagName = stringToLowerCase(element.tagName);\n    const parentTagName = stringToLowerCase(parent.tagName);\n\n    if (!ALLOWED_NAMESPACES[element.namespaceURI]) {\n      return false;\n    }\n\n    if (element.namespaceURI === SVG_NAMESPACE) {\n      // The only way to switch from HTML namespace to SVG\n      // is via <svg>. If it happens via any other tag, then\n      // it should be killed.\n      if (parent.namespaceURI === HTML_NAMESPACE) {\n        return tagName === 'svg';\n      } // The only way to switch from MathML to SVG is via`\n      // svg if parent is either <annotation-xml> or MathML\n      // text integration points.\n\n\n      if (parent.namespaceURI === MATHML_NAMESPACE) {\n        return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]);\n      } // We only allow elements that are defined in SVG\n      // spec. All others are disallowed in SVG namespace.\n\n\n      return Boolean(ALL_SVG_TAGS[tagName]);\n    }\n\n    if (element.namespaceURI === MATHML_NAMESPACE) {\n      // The only way to switch from HTML namespace to MathML\n      // is via <math>. If it happens via any other tag, then\n      // it should be killed.\n      if (parent.namespaceURI === HTML_NAMESPACE) {\n        return tagName === 'math';\n      } // The only way to switch from SVG to MathML is via\n      // <math> and HTML integration points\n\n\n      if (parent.namespaceURI === SVG_NAMESPACE) {\n        return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];\n      } // We only allow elements that are defined in MathML\n      // spec. All others are disallowed in MathML namespace.\n\n\n      return Boolean(ALL_MATHML_TAGS[tagName]);\n    }\n\n    if (element.namespaceURI === HTML_NAMESPACE) {\n      // The only way to switch from SVG to HTML is via\n      // HTML integration points, and from MathML to HTML\n      // is via MathML text integration points\n      if (parent.namespaceURI === SVG_NAMESPACE && !HTML_INTEGRATION_POINTS[parentTagName]) {\n        return false;\n      }\n\n      if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) {\n        return false;\n      } // We disallow tags that are specific for MathML\n      // or SVG and should never appear in HTML namespace\n\n\n      return !ALL_MATHML_TAGS[tagName] && (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName]);\n    } // For XHTML and XML documents that support custom namespaces\n\n\n    if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && ALLOWED_NAMESPACES[element.namespaceURI]) {\n      return true;\n    } // The code should never reach this place (this means\n    // that the element somehow got namespace that is not\n    // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).\n    // Return false just in case.\n\n\n    return false;\n  };\n  /**\n   * _forceRemove\n   *\n   * @param  {Node} node a DOM node\n   */\n\n\n  const _forceRemove = function _forceRemove(node) {\n    arrayPush(DOMPurify.removed, {\n      element: node\n    });\n\n    try {\n      // eslint-disable-next-line unicorn/prefer-dom-node-remove\n      node.parentNode.removeChild(node);\n    } catch (_) {\n      node.remove();\n    }\n  };\n  /**\n   * _removeAttribute\n   *\n   * @param  {String} name an Attribute name\n   * @param  {Node} node a DOM node\n   */\n\n\n  const _removeAttribute = function _removeAttribute(name, node) {\n    try {\n      arrayPush(DOMPurify.removed, {\n        attribute: node.getAttributeNode(name),\n        from: node\n      });\n    } catch (_) {\n      arrayPush(DOMPurify.removed, {\n        attribute: null,\n        from: node\n      });\n    }\n\n    node.removeAttribute(name); // We void attribute values for unremovable \"is\"\" attributes\n\n    if (name === 'is' && !ALLOWED_ATTR[name]) {\n      if (RETURN_DOM || RETURN_DOM_FRAGMENT) {\n        try {\n          _forceRemove(node);\n        } catch (_) {}\n      } else {\n        try {\n          node.setAttribute(name, '');\n        } catch (_) {}\n      }\n    }\n  };\n  /**\n   * _initDocument\n   *\n   * @param  {String} dirty a string of dirty markup\n   * @return {Document} a DOM, filled with the dirty markup\n   */\n\n\n  const _initDocument = function _initDocument(dirty) {\n    /* Create a HTML document */\n    let doc;\n    let leadingWhitespace;\n\n    if (FORCE_BODY) {\n      dirty = '<remove></remove>' + dirty;\n    } else {\n      /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */\n      const matches = stringMatch(dirty, /^[\\r\\n\\t ]+/);\n      leadingWhitespace = matches && matches[0];\n    }\n\n    if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && NAMESPACE === HTML_NAMESPACE) {\n      // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)\n      dirty = '<html xmlns=\"http://www.w3.org/1999/xhtml\"><head></head><body>' + dirty + '</body></html>';\n    }\n\n    const dirtyPayload = trustedTypesPolicy ? trustedTypesPolicy.createHTML(dirty) : dirty;\n    /*\n     * Use the DOMParser API by default, fallback later if needs be\n     * DOMParser not work for svg when has multiple root element.\n     */\n\n    if (NAMESPACE === HTML_NAMESPACE) {\n      try {\n        doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);\n      } catch (_) {}\n    }\n    /* Use createHTMLDocument in case DOMParser is not available */\n\n\n    if (!doc || !doc.documentElement) {\n      doc = implementation.createDocument(NAMESPACE, 'template', null);\n\n      try {\n        doc.documentElement.innerHTML = IS_EMPTY_INPUT ? emptyHTML : dirtyPayload;\n      } catch (_) {// Syntax error if dirtyPayload is invalid xml\n      }\n    }\n\n    const body = doc.body || doc.documentElement;\n\n    if (dirty && leadingWhitespace) {\n      body.insertBefore(document.createTextNode(leadingWhitespace), body.childNodes[0] || null);\n    }\n    /* Work on whole document or just its body */\n\n\n    if (NAMESPACE === HTML_NAMESPACE) {\n      return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0];\n    }\n\n    return WHOLE_DOCUMENT ? doc.documentElement : body;\n  };\n  /**\n   * _createIterator\n   *\n   * @param  {Document} root document/fragment to create iterator for\n   * @return {Iterator} iterator instance\n   */\n\n\n  const _createIterator = function _createIterator(root) {\n    return createNodeIterator.call(root.ownerDocument || root, root, // eslint-disable-next-line no-bitwise\n    NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT, null, false);\n  };\n  /**\n   * _isClobbered\n   *\n   * @param  {Node} elm element to check for clobbering attacks\n   * @return {Boolean} true if clobbered, false if safe\n   */\n\n\n  const _isClobbered = function _isClobbered(elm) {\n    return elm instanceof HTMLFormElement && (typeof elm.nodeName !== 'string' || typeof elm.textContent !== 'string' || typeof elm.removeChild !== 'function' || !(elm.attributes instanceof NamedNodeMap) || typeof elm.removeAttribute !== 'function' || typeof elm.setAttribute !== 'function' || typeof elm.namespaceURI !== 'string' || typeof elm.insertBefore !== 'function' || typeof elm.hasChildNodes !== 'function');\n  };\n  /**\n   * _isNode\n   *\n   * @param  {Node} obj object to check whether it's a DOM node\n   * @return {Boolean} true is object is a DOM node\n   */\n\n\n  const _isNode = function _isNode(object) {\n    return typeof Node === 'object' ? object instanceof Node : object && typeof object === 'object' && typeof object.nodeType === 'number' && typeof object.nodeName === 'string';\n  };\n  /**\n   * _executeHook\n   * Execute user configurable hooks\n   *\n   * @param  {String} entryPoint  Name of the hook's entry point\n   * @param  {Node} currentNode node to work on with the hook\n   * @param  {Object} data additional hook parameters\n   */\n\n\n  const _executeHook = function _executeHook(entryPoint, currentNode, data) {\n    if (!hooks[entryPoint]) {\n      return;\n    }\n\n    arrayForEach(hooks[entryPoint], hook => {\n      hook.call(DOMPurify, currentNode, data, CONFIG);\n    });\n  };\n  /**\n   * _sanitizeElements\n   *\n   * @protect nodeName\n   * @protect textContent\n   * @protect removeChild\n   *\n   * @param   {Node} currentNode to check for permission to exist\n   * @return  {Boolean} true if node was killed, false if left alive\n   */\n\n\n  const _sanitizeElements = function _sanitizeElements(currentNode) {\n    let content;\n    /* Execute a hook if present */\n\n    _executeHook('beforeSanitizeElements', currentNode, null);\n    /* Check if element is clobbered or can clobber */\n\n\n    if (_isClobbered(currentNode)) {\n      _forceRemove(currentNode);\n\n      return true;\n    }\n    /* Now let's check the element's type and name */\n\n\n    const tagName = transformCaseFunc(currentNode.nodeName);\n    /* Execute a hook if present */\n\n    _executeHook('uponSanitizeElement', currentNode, {\n      tagName,\n      allowedTags: ALLOWED_TAGS\n    });\n    /* Detect mXSS attempts abusing namespace confusion */\n\n\n    if (currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && (!_isNode(currentNode.content) || !_isNode(currentNode.content.firstElementChild)) && regExpTest(/<[/\\w]/g, currentNode.innerHTML) && regExpTest(/<[/\\w]/g, currentNode.textContent)) {\n      _forceRemove(currentNode);\n\n      return true;\n    }\n    /* Remove element if anything forbids its presence */\n\n\n    if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n      /* Check if we have a custom element to handle */\n      if (!FORBID_TAGS[tagName] && _basicCustomElementTest(tagName)) {\n        if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)) return false;\n        if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)) return false;\n      }\n      /* Keep content except for bad-listed elements */\n\n\n      if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {\n        const parentNode = getParentNode(currentNode) || currentNode.parentNode;\n        const childNodes = getChildNodes(currentNode) || currentNode.childNodes;\n\n        if (childNodes && parentNode) {\n          const childCount = childNodes.length;\n\n          for (let i = childCount - 1; i >= 0; --i) {\n            parentNode.insertBefore(cloneNode(childNodes[i], true), getNextSibling(currentNode));\n          }\n        }\n      }\n\n      _forceRemove(currentNode);\n\n      return true;\n    }\n    /* Check whether element has a valid namespace */\n\n\n    if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) {\n      _forceRemove(currentNode);\n\n      return true;\n    }\n    /* Make sure that older browsers don't get fallback-tag mXSS */\n\n\n    if ((tagName === 'noscript' || tagName === 'noembed' || tagName === 'noframes') && regExpTest(/<\\/no(script|embed|frames)/i, currentNode.innerHTML)) {\n      _forceRemove(currentNode);\n\n      return true;\n    }\n    /* Sanitize element content to be template-safe */\n\n\n    if (SAFE_FOR_TEMPLATES && currentNode.nodeType === 3) {\n      /* Get the element's text content */\n      content = currentNode.textContent;\n      content = stringReplace(content, MUSTACHE_EXPR, ' ');\n      content = stringReplace(content, ERB_EXPR, ' ');\n      content = stringReplace(content, TMPLIT_EXPR, ' ');\n\n      if (currentNode.textContent !== content) {\n        arrayPush(DOMPurify.removed, {\n          element: currentNode.cloneNode()\n        });\n        currentNode.textContent = content;\n      }\n    }\n    /* Execute a hook if present */\n\n\n    _executeHook('afterSanitizeElements', currentNode, null);\n\n    return false;\n  };\n  /**\n   * _isValidAttribute\n   *\n   * @param  {string} lcTag Lowercase tag name of containing element.\n   * @param  {string} lcName Lowercase attribute name.\n   * @param  {string} value Attribute value.\n   * @return {Boolean} Returns true if `value` is valid, otherwise false.\n   */\n  // eslint-disable-next-line complexity\n\n\n  const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) {\n    /* Make sure attribute cannot clobber */\n    if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) {\n      return false;\n    }\n    /* Allow valid data-* attributes: At least one character after \"-\"\n        (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)\n        XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)\n        We don't need to check the value; it's always URI safe. */\n\n\n    if (ALLOW_DATA_ATTR && !FORBID_ATTR[lcName] && regExpTest(DATA_ATTR, lcName)) ; else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) ; else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) {\n      if ( // First condition does a very basic check if a) it's basically a valid custom element tagname AND\n      // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n      // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck\n      _basicCustomElementTest(lcTag) && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag)) && (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName) || CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName)) || // Alternative, second condition checks if it's an `is`-attribute, AND\n      // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n      lcName === 'is' && CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))) ; else {\n        return false;\n      }\n      /* Check value is safe. First, is attr inert? If so, is safe */\n\n    } else if (URI_SAFE_ATTRIBUTES[lcName]) ; else if (regExpTest(IS_ALLOWED_URI$1, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if ((lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') && lcTag !== 'script' && stringIndexOf(value, 'data:') === 0 && DATA_URI_TAGS[lcTag]) ; else if (ALLOW_UNKNOWN_PROTOCOLS && !regExpTest(IS_SCRIPT_OR_DATA, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if (value) {\n      return false;\n    } else ;\n\n    return true;\n  };\n  /**\n   * _basicCustomElementCheck\n   * checks if at least one dash is included in tagName, and it's not the first char\n   * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name\n   * @param {string} tagName name of the tag of the node to sanitize\n   */\n\n\n  const _basicCustomElementTest = function _basicCustomElementTest(tagName) {\n    return tagName.indexOf('-') > 0;\n  };\n  /**\n   * _sanitizeAttributes\n   *\n   * @protect attributes\n   * @protect nodeName\n   * @protect removeAttribute\n   * @protect setAttribute\n   *\n   * @param  {Node} currentNode to sanitize\n   */\n\n\n  const _sanitizeAttributes = function _sanitizeAttributes(currentNode) {\n    let attr;\n    let value;\n    let lcName;\n    let l;\n    /* Execute a hook if present */\n\n    _executeHook('beforeSanitizeAttributes', currentNode, null);\n\n    const {\n      attributes\n    } = currentNode;\n    /* Check if we have attributes; if not we might have a text node */\n\n    if (!attributes) {\n      return;\n    }\n\n    const hookEvent = {\n      attrName: '',\n      attrValue: '',\n      keepAttr: true,\n      allowedAttributes: ALLOWED_ATTR\n    };\n    l = attributes.length;\n    /* Go backwards over all attributes; safely remove bad ones */\n\n    while (l--) {\n      attr = attributes[l];\n      const {\n        name,\n        namespaceURI\n      } = attr;\n      value = name === 'value' ? attr.value : stringTrim(attr.value);\n      lcName = transformCaseFunc(name);\n      /* Execute a hook if present */\n\n      hookEvent.attrName = lcName;\n      hookEvent.attrValue = value;\n      hookEvent.keepAttr = true;\n      hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set\n\n      _executeHook('uponSanitizeAttribute', currentNode, hookEvent);\n\n      value = hookEvent.attrValue;\n      /* Did the hooks approve of the attribute? */\n\n      if (hookEvent.forceKeepAttr) {\n        continue;\n      }\n      /* Remove attribute */\n\n\n      _removeAttribute(name, currentNode);\n      /* Did the hooks approve of the attribute? */\n\n\n      if (!hookEvent.keepAttr) {\n        continue;\n      }\n      /* Work around a security issue in jQuery 3.0 */\n\n\n      if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\\/>/i, value)) {\n        _removeAttribute(name, currentNode);\n\n        continue;\n      }\n      /* Sanitize attribute content to be template-safe */\n\n\n      if (SAFE_FOR_TEMPLATES) {\n        value = stringReplace(value, MUSTACHE_EXPR, ' ');\n        value = stringReplace(value, ERB_EXPR, ' ');\n        value = stringReplace(value, TMPLIT_EXPR, ' ');\n      }\n      /* Is `value` valid for this attribute? */\n\n\n      const lcTag = transformCaseFunc(currentNode.nodeName);\n\n      if (!_isValidAttribute(lcTag, lcName, value)) {\n        continue;\n      }\n      /* Full DOM Clobbering protection via namespace isolation,\n       * Prefix id and name attributes with `user-content-`\n       */\n\n\n      if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) {\n        // Remove the attribute with this value\n        _removeAttribute(name, currentNode); // Prefix the value and later re-create the attribute with the sanitized value\n\n\n        value = SANITIZE_NAMED_PROPS_PREFIX + value;\n      }\n      /* Handle attributes that require Trusted Types */\n\n\n      if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') {\n        if (namespaceURI) ; else {\n          switch (trustedTypes.getAttributeType(lcTag, lcName)) {\n            case 'TrustedHTML':\n              {\n                value = trustedTypesPolicy.createHTML(value);\n                break;\n              }\n\n            case 'TrustedScriptURL':\n              {\n                value = trustedTypesPolicy.createScriptURL(value);\n                break;\n              }\n          }\n        }\n      }\n      /* Handle invalid data-* attribute set by try-catching it */\n\n\n      try {\n        if (namespaceURI) {\n          currentNode.setAttributeNS(namespaceURI, name, value);\n        } else {\n          /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. \"x-schema\". */\n          currentNode.setAttribute(name, value);\n        }\n\n        arrayPop(DOMPurify.removed);\n      } catch (_) {}\n    }\n    /* Execute a hook if present */\n\n\n    _executeHook('afterSanitizeAttributes', currentNode, null);\n  };\n  /**\n   * _sanitizeShadowDOM\n   *\n   * @param  {DocumentFragment} fragment to iterate over recursively\n   */\n\n\n  const _sanitizeShadowDOM = function _sanitizeShadowDOM(fragment) {\n    let shadowNode;\n\n    const shadowIterator = _createIterator(fragment);\n    /* Execute a hook if present */\n\n\n    _executeHook('beforeSanitizeShadowDOM', fragment, null);\n\n    while (shadowNode = shadowIterator.nextNode()) {\n      /* Execute a hook if present */\n      _executeHook('uponSanitizeShadowNode', shadowNode, null);\n      /* Sanitize tags and elements */\n\n\n      if (_sanitizeElements(shadowNode)) {\n        continue;\n      }\n      /* Deep shadow DOM detected */\n\n\n      if (shadowNode.content instanceof DocumentFragment) {\n        _sanitizeShadowDOM(shadowNode.content);\n      }\n      /* Check attributes, sanitize if necessary */\n\n\n      _sanitizeAttributes(shadowNode);\n    }\n    /* Execute a hook if present */\n\n\n    _executeHook('afterSanitizeShadowDOM', fragment, null);\n  };\n  /**\n   * Sanitize\n   * Public method providing core sanitation functionality\n   *\n   * @param {String|Node} dirty string or DOM node\n   * @param {Object} configuration object\n   */\n  // eslint-disable-next-line complexity\n\n\n  DOMPurify.sanitize = function (dirty) {\n    let cfg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n    let body;\n    let importedNode;\n    let currentNode;\n    let returnNode;\n    /* Make sure we have a string to sanitize.\n      DO NOT return early, as this will return the wrong type if\n      the user has requested a DOM object rather than a string */\n\n    IS_EMPTY_INPUT = !dirty;\n\n    if (IS_EMPTY_INPUT) {\n      dirty = '<!-->';\n    }\n    /* Stringify, in case dirty is an object */\n\n\n    if (typeof dirty !== 'string' && !_isNode(dirty)) {\n      if (typeof dirty.toString === 'function') {\n        dirty = dirty.toString();\n\n        if (typeof dirty !== 'string') {\n          throw typeErrorCreate('dirty is not a string, aborting');\n        }\n      } else {\n        throw typeErrorCreate('toString is not a function');\n      }\n    }\n    /* Return dirty HTML if DOMPurify cannot run */\n\n\n    if (!DOMPurify.isSupported) {\n      return dirty;\n    }\n    /* Assign config vars */\n\n\n    if (!SET_CONFIG) {\n      _parseConfig(cfg);\n    }\n    /* Clean up removed elements */\n\n\n    DOMPurify.removed = [];\n    /* Check if dirty is correctly typed for IN_PLACE */\n\n    if (typeof dirty === 'string') {\n      IN_PLACE = false;\n    }\n\n    if (IN_PLACE) {\n      /* Do some early pre-sanitization to avoid unsafe root nodes */\n      if (dirty.nodeName) {\n        const tagName = transformCaseFunc(dirty.nodeName);\n\n        if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n          throw typeErrorCreate('root node is forbidden and cannot be sanitized in-place');\n        }\n      }\n    } else if (dirty instanceof Node) {\n      /* If dirty is a DOM element, append to an empty document to avoid\n         elements being stripped by the parser */\n      body = _initDocument('<!---->');\n      importedNode = body.ownerDocument.importNode(dirty, true);\n\n      if (importedNode.nodeType === 1 && importedNode.nodeName === 'BODY') {\n        /* Node is already a body, use as is */\n        body = importedNode;\n      } else if (importedNode.nodeName === 'HTML') {\n        body = importedNode;\n      } else {\n        // eslint-disable-next-line unicorn/prefer-dom-node-append\n        body.appendChild(importedNode);\n      }\n    } else {\n      /* Exit directly if we have nothing to do */\n      if (!RETURN_DOM && !SAFE_FOR_TEMPLATES && !WHOLE_DOCUMENT && // eslint-disable-next-line unicorn/prefer-includes\n      dirty.indexOf('<') === -1) {\n        return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(dirty) : dirty;\n      }\n      /* Initialize the document to work on */\n\n\n      body = _initDocument(dirty);\n      /* Check we have a DOM node from the data */\n\n      if (!body) {\n        return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : '';\n      }\n    }\n    /* Remove first element node (ours) if FORCE_BODY is set */\n\n\n    if (body && FORCE_BODY) {\n      _forceRemove(body.firstChild);\n    }\n    /* Get node iterator */\n\n\n    const nodeIterator = _createIterator(IN_PLACE ? dirty : body);\n    /* Now start iterating over the created document */\n\n\n    while (currentNode = nodeIterator.nextNode()) {\n      /* Sanitize tags and elements */\n      if (_sanitizeElements(currentNode)) {\n        continue;\n      }\n      /* Shadow DOM detected, sanitize it */\n\n\n      if (currentNode.content instanceof DocumentFragment) {\n        _sanitizeShadowDOM(currentNode.content);\n      }\n      /* Check attributes, sanitize if necessary */\n\n\n      _sanitizeAttributes(currentNode);\n    }\n    /* If we sanitized `dirty` in-place, return it. */\n\n\n    if (IN_PLACE) {\n      return dirty;\n    }\n    /* Return sanitized string or DOM */\n\n\n    if (RETURN_DOM) {\n      if (RETURN_DOM_FRAGMENT) {\n        returnNode = createDocumentFragment.call(body.ownerDocument);\n\n        while (body.firstChild) {\n          // eslint-disable-next-line unicorn/prefer-dom-node-append\n          returnNode.appendChild(body.firstChild);\n        }\n      } else {\n        returnNode = body;\n      }\n\n      if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) {\n        /*\n          AdoptNode() is not used because internal state is not reset\n          (e.g. the past names map of a HTMLFormElement), this is safe\n          in theory but we would rather not risk another attack vector.\n          The state that is cloned by importNode() is explicitly defined\n          by the specs.\n        */\n        returnNode = importNode.call(originalDocument, returnNode, true);\n      }\n\n      return returnNode;\n    }\n\n    let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML;\n    /* Serialize doctype if allowed */\n\n    if (WHOLE_DOCUMENT && ALLOWED_TAGS['!doctype'] && body.ownerDocument && body.ownerDocument.doctype && body.ownerDocument.doctype.name && regExpTest(DOCTYPE_NAME, body.ownerDocument.doctype.name)) {\n      serializedHTML = '<!DOCTYPE ' + body.ownerDocument.doctype.name + '>\\n' + serializedHTML;\n    }\n    /* Sanitize final string template-safe */\n\n\n    if (SAFE_FOR_TEMPLATES) {\n      serializedHTML = stringReplace(serializedHTML, MUSTACHE_EXPR, ' ');\n      serializedHTML = stringReplace(serializedHTML, ERB_EXPR, ' ');\n      serializedHTML = stringReplace(serializedHTML, TMPLIT_EXPR, ' ');\n    }\n\n    return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML;\n  };\n  /**\n   * Public method to set the configuration once\n   * setConfig\n   *\n   * @param {Object} cfg configuration object\n   */\n\n\n  DOMPurify.setConfig = function (cfg) {\n    _parseConfig(cfg);\n\n    SET_CONFIG = true;\n  };\n  /**\n   * Public method to remove the configuration\n   * clearConfig\n   *\n   */\n\n\n  DOMPurify.clearConfig = function () {\n    CONFIG = null;\n    SET_CONFIG = false;\n  };\n  /**\n   * Public method to check if an attribute value is valid.\n   * Uses last set config, if any. Otherwise, uses config defaults.\n   * isValidAttribute\n   *\n   * @param  {string} tag Tag name of containing element.\n   * @param  {string} attr Attribute name.\n   * @param  {string} value Attribute value.\n   * @return {Boolean} Returns true if `value` is valid. Otherwise, returns false.\n   */\n\n\n  DOMPurify.isValidAttribute = function (tag, attr, value) {\n    /* Initialize shared config vars if necessary. */\n    if (!CONFIG) {\n      _parseConfig({});\n    }\n\n    const lcTag = transformCaseFunc(tag);\n    const lcName = transformCaseFunc(attr);\n    return _isValidAttribute(lcTag, lcName, value);\n  };\n  /**\n   * AddHook\n   * Public method to add DOMPurify hooks\n   *\n   * @param {String} entryPoint entry point for the hook to add\n   * @param {Function} hookFunction function to execute\n   */\n\n\n  DOMPurify.addHook = function (entryPoint, hookFunction) {\n    if (typeof hookFunction !== 'function') {\n      return;\n    }\n\n    hooks[entryPoint] = hooks[entryPoint] || [];\n    arrayPush(hooks[entryPoint], hookFunction);\n  };\n  /**\n   * RemoveHook\n   * Public method to remove a DOMPurify hook at a given entryPoint\n   * (pops it from the stack of hooks if more are present)\n   *\n   * @param {String} entryPoint entry point for the hook to remove\n   * @return {Function} removed(popped) hook\n   */\n\n\n  DOMPurify.removeHook = function (entryPoint) {\n    if (hooks[entryPoint]) {\n      return arrayPop(hooks[entryPoint]);\n    }\n  };\n  /**\n   * RemoveHooks\n   * Public method to remove all DOMPurify hooks at a given entryPoint\n   *\n   * @param  {String} entryPoint entry point for the hooks to remove\n   */\n\n\n  DOMPurify.removeHooks = function (entryPoint) {\n    if (hooks[entryPoint]) {\n      hooks[entryPoint] = [];\n    }\n  };\n  /**\n   * RemoveAllHooks\n   * Public method to remove all DOMPurify hooks\n   *\n   */\n\n\n  DOMPurify.removeAllHooks = function () {\n    hooks = {};\n  };\n\n  return DOMPurify;\n}\n\nvar purify = createDOMPurify();\n\nclass Textbox {\n\n    constructor({value, label, onchange}) {\n\n        this.elem = div({class: 'igv-ui-generic-dialog-label-input'});\n\n        if(label) {\n            const div$1 = div();\n            div$1.innerHTML = label;\n            this.elem.appendChild(div$1);\n        }\n\n        this.textBox = create$1('input');\n        if(value) {\n            this.textBox.value = purify.sanitize(value);\n        }\n        this.elem.appendChild(this.textBox);\n\n        if(onchange) {\n            this.textBox.addEventListener('change', (e) => onchange(this.textBox.value));\n        }\n    }\n\n    get value() {\n        return this.textBox.value;\n    }\n\n    set value(v) {\n        this.textBox.value = v;\n    }\n}\n\n/**\n * Generic container for UI components\n */\nclass Panel {\n\n    constructor() {\n\n        this.elem = create$1('div', {\n            class: 'igv-ui-panel-column'\n        });\n    }\n\n    add(component) {\n\n        if(component instanceof Node) {\n            this.elem.append(component);\n        }\n        else if(typeof component === 'object') {\n            this.elem.append(component.elem);\n        }\n        else {\n            // Assuming a string, possibly html\n            const wrapper = div();\n            wrapper.innerHTML = component;\n            this.elem.append(wrapper);\n        }\n    }\n\n\n}\n\nfunction createCheckbox(name, initialState) {\n    const container = div({class: 'igv-ui-trackgear-popover-check-container'});\n    const svg = iconMarkup('check', (true === initialState ? '#444' : 'transparent'));\n    svg.style.borderColor = 'gray';\n    svg.style.borderWidth = '1px';\n    svg.style.borderStyle = 'solid';\n\n    container.appendChild(svg);\n    let label = div(); //{ class: 'igv-some-label-class' });\n    label.textContent = name;\n    container.appendChild(label);\n\n    return container;\n}\n\nfunction createIcon(name, color) {\n    return iconMarkup(name, color);\n}\n\nfunction iconMarkup(name, color) {\n    color = color || \"currentColor\";\n    let icon = icons[name];\n    if (!icon) {\n        console.error(`No icon named: ${name}`);\n        icon = icons[\"question\"];\n    }\n\n    const svg = document.createElementNS(\"http://www.w3.org/2000/svg\", \"svg\");\n    svg.setAttributeNS(null,'viewBox', '0 0 ' + icon[0] + ' ' + icon[1]);\n    const path = document.createElementNS(\"http://www.w3.org/2000/svg\", \"path\");\n    path.setAttributeNS(null,'fill',  color );\n    path.setAttributeNS(null,'d', icon[4]);\n    svg.appendChild(path);\n    return svg;\n}\n\nconst icons = {\n    \"check\": [512, 512, [], \"f00c\", \"M173.898 439.404l-166.4-166.4c-9.997-9.997-9.997-26.206 0-36.204l36.203-36.204c9.997-9.998 26.207-9.998 36.204 0L192 312.69 432.095 72.596c9.997-9.997 26.207-9.997 36.204 0l36.203 36.204c9.997 9.997 9.997 26.206 0 36.204l-294.4 294.401c-9.998 9.997-26.207 9.997-36.204-.001z\"],\n    \"cog\": [512, 512, [], \"f013\", \"M444.788 291.1l42.616 24.599c4.867 2.809 7.126 8.618 5.459 13.985-11.07 35.642-29.97 67.842-54.689 94.586a12.016 12.016 0 0 1-14.832 2.254l-42.584-24.595a191.577 191.577 0 0 1-60.759 35.13v49.182a12.01 12.01 0 0 1-9.377 11.718c-34.956 7.85-72.499 8.256-109.219.007-5.49-1.233-9.403-6.096-9.403-11.723v-49.184a191.555 191.555 0 0 1-60.759-35.13l-42.584 24.595a12.016 12.016 0 0 1-14.832-2.254c-24.718-26.744-43.619-58.944-54.689-94.586-1.667-5.366.592-11.175 5.459-13.985L67.212 291.1a193.48 193.48 0 0 1 0-70.199l-42.616-24.599c-4.867-2.809-7.126-8.618-5.459-13.985 11.07-35.642 29.97-67.842 54.689-94.586a12.016 12.016 0 0 1 14.832-2.254l42.584 24.595a191.577 191.577 0 0 1 60.759-35.13V25.759a12.01 12.01 0 0 1 9.377-11.718c34.956-7.85 72.499-8.256 109.219-.007 5.49 1.233 9.403 6.096 9.403 11.723v49.184a191.555 191.555 0 0 1 60.759 35.13l42.584-24.595a12.016 12.016 0 0 1 14.832 2.254c24.718 26.744 43.619 58.944 54.689 94.586 1.667 5.366-.592 11.175-5.459 13.985L444.788 220.9a193.485 193.485 0 0 1 0 70.2zM336 256c0-44.112-35.888-80-80-80s-80 35.888-80 80 35.888 80 80 80 80-35.888 80-80z\"],\n    \"exclamation\": [192, 512, [], \"f12a\", \"M176 432c0 44.112-35.888 80-80 80s-80-35.888-80-80 35.888-80 80-80 80 35.888 80 80zM25.26 25.199l13.6 272C39.499 309.972 50.041 320 62.83 320h66.34c12.789 0 23.331-10.028 23.97-22.801l13.6-272C167.425 11.49 156.496 0 142.77 0H49.23C35.504 0 24.575 11.49 25.26 25.199z\"],\n    \"exclamation-circle\": [512, 512, [], \"f06a\", \"M504 256c0 136.997-111.043 248-248 248S8 392.997 8 256C8 119.083 119.043 8 256 8s248 111.083 248 248zm-248 50c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"],\n    \"exclamation-triangle\": [576, 512, [], \"f071\", \"M569.517 440.013C587.975 472.007 564.806 512 527.94 512H48.054c-36.937 0-59.999-40.055-41.577-71.987L246.423 23.985c18.467-32.009 64.72-31.951 83.154 0l239.94 416.028zM288 354c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"],\n    \"minus\": [448, 512, [], \"f068\", \"M424 318.2c13.3 0 24-10.7 24-24v-76.4c0-13.3-10.7-24-24-24H24c-13.3 0-24 10.7-24 24v76.4c0 13.3 10.7 24 24 24h400z\"],\n    \"minus-circle\": [512, 512, [], \"f056\", \"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zM124 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H124z\"],\n    \"minus-square\": [448, 512, [], \"f146\", \"M400 32H48C21.5 32 0 53.5 0 80v352c0 26.5 21.5 48 48 48h352c26.5 0 48-21.5 48-48V80c0-26.5-21.5-48-48-48zM92 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H92z\"],\n    \"plus\": [448, 512, [], \"f067\", \"M448 294.2v-76.4c0-13.3-10.7-24-24-24H286.2V56c0-13.3-10.7-24-24-24h-76.4c-13.3 0-24 10.7-24 24v137.8H24c-13.3 0-24 10.7-24 24v76.4c0 13.3 10.7 24 24 24h137.8V456c0 13.3 10.7 24 24 24h76.4c13.3 0 24-10.7 24-24V318.2H424c13.3 0 24-10.7 24-24z\"],\n    \"plus-circle\": [512, 512, [], \"f055\", \"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm144 276c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92h-92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z\"],\n    \"plus-square\": [448, 512, [], \"f0fe\", \"M400 32H48C21.5 32 0 53.5 0 80v352c0 26.5 21.5 48 48 48h352c26.5 0 48-21.5 48-48V80c0-26.5-21.5-48-48-48zm-32 252c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92H92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z\"],\n    \"question\": [384, 512, [], \"f128\", \"M202.021 0C122.202 0 70.503 32.703 29.914 91.026c-7.363 10.58-5.093 25.086 5.178 32.874l43.138 32.709c10.373 7.865 25.132 6.026 33.253-4.148 25.049-31.381 43.63-49.449 82.757-49.449 30.764 0 68.816 19.799 68.816 49.631 0 22.552-18.617 34.134-48.993 51.164-35.423 19.86-82.299 44.576-82.299 106.405V320c0 13.255 10.745 24 24 24h72.471c13.255 0 24-10.745 24-24v-5.773c0-42.86 125.268-44.645 125.268-160.627C377.504 66.256 286.902 0 202.021 0zM192 373.459c-38.196 0-69.271 31.075-69.271 69.271 0 38.195 31.075 69.27 69.271 69.27s69.271-31.075 69.271-69.271-31.075-69.27-69.271-69.27z\"],\n    \"save\": [448, 512, [], \"f0c7\", \"M433.941 129.941l-83.882-83.882A48 48 0 0 0 316.118 32H48C21.49 32 0 53.49 0 80v352c0 26.51 21.49 48 48 48h352c26.51 0 48-21.49 48-48V163.882a48 48 0 0 0-14.059-33.941zM224 416c-35.346 0-64-28.654-64-64 0-35.346 28.654-64 64-64s64 28.654 64 64c0 35.346-28.654 64-64 64zm96-304.52V212c0 6.627-5.373 12-12 12H76c-6.627 0-12-5.373-12-12V108c0-6.627 5.373-12 12-12h228.52c3.183 0 6.235 1.264 8.485 3.515l3.48 3.48A11.996 11.996 0 0 1 320 111.48z\"],\n    \"search\": [512, 512, [], \"f002\", \"M505 442.7L405.3 343c-4.5-4.5-10.6-7-17-7H372c27.6-35.3 44-79.7 44-128C416 93.1 322.9 0 208 0S0 93.1 0 208s93.1 208 208 208c48.3 0 92.7-16.4 128-44v16.3c0 6.4 2.5 12.5 7 17l99.7 99.7c9.4 9.4 24.6 9.4 33.9 0l28.3-28.3c9.4-9.4 9.4-24.6.1-34zM208 336c-70.7 0-128-57.2-128-128 0-70.7 57.2-128 128-128 70.7 0 128 57.2 128 128 0 70.7-57.2 128-128 128z\"],\n    \"share\": [512, 512, [], \"f064\", \"M503.691 189.836L327.687 37.851C312.281 24.546 288 35.347 288 56.015v80.053C127.371 137.907 0 170.1 0 322.326c0 61.441 39.581 122.309 83.333 154.132 13.653 9.931 33.111-2.533 28.077-18.631C66.066 312.814 132.917 274.316 288 272.085V360c0 20.7 24.3 31.453 39.687 18.164l176.004-152c11.071-9.562 11.086-26.753 0-36.328z\"],\n    \"spinner\": [512, 512, [], \"f110\", \"M304 48c0 26.51-21.49 48-48 48s-48-21.49-48-48 21.49-48 48-48 48 21.49 48 48zm-48 368c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48-21.49-48-48-48zm208-208c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48-21.49-48-48-48zM96 256c0-26.51-21.49-48-48-48S0 229.49 0 256s21.49 48 48 48 48-21.49 48-48zm12.922 99.078c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48c0-26.509-21.491-48-48-48zm294.156 0c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48c0-26.509-21.49-48-48-48zM108.922 60.922c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48-21.491-48-48-48z\"],\n    \"square\": [448, 512, [], \"f0c8\", \"M400 32H48C21.5 32 0 53.5 0 80v352c0 26.5 21.5 48 48 48h352c26.5 0 48-21.5 48-48V80c0-26.5-21.5-48-48-48z\"],\n    \"square-full\": [512, 512, [], \"f45c\", \"M512 512H0V0h512v512z\"],\n    \"times\": [384, 512, [], \"f00d\", \"M323.1 441l53.9-53.9c9.4-9.4 9.4-24.5 0-33.9L279.8 256l97.2-97.2c9.4-9.4 9.4-24.5 0-33.9L323.1 71c-9.4-9.4-24.5-9.4-33.9 0L192 168.2 94.8 71c-9.4-9.4-24.5-9.4-33.9 0L7 124.9c-9.4 9.4-9.4 24.5 0 33.9l97.2 97.2L7 353.2c-9.4 9.4-9.4 24.5 0 33.9L60.9 441c9.4 9.4 24.5 9.4 33.9 0l97.2-97.2 97.2 97.2c9.3 9.3 24.5 9.3 33.9 0z\"],\n    \"times-circle\": [512, 512, [], \"f057\", \"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm121.6 313.1c4.7 4.7 4.7 12.3 0 17L338 377.6c-4.7 4.7-12.3 4.7-17 0L256 312l-65.1 65.6c-4.7 4.7-12.3 4.7-17 0L134.4 338c-4.7-4.7-4.7-12.3 0-17l65.6-65-65.6-65.1c-4.7-4.7-4.7-12.3 0-17l39.6-39.6c4.7-4.7 12.3-4.7 17 0l65 65.7 65.1-65.6c4.7-4.7 12.3-4.7 17 0l39.6 39.6c4.7 4.7 4.7 12.3 0 17L312 256l65.6 65.1z\"],\n    \"wrench\": [512, 512, [], \"f0ad\", \"M481.156 200c9.3 0 15.12 10.155 10.325 18.124C466.295 259.992 420.419 288 368 288c-79.222 0-143.501-63.974-143.997-143.079C223.505 65.469 288.548-.001 368.002 0c52.362.001 98.196 27.949 123.4 69.743C496.24 77.766 490.523 88 481.154 88H376l-40 56 40 56h105.156zm-171.649 93.003L109.255 493.255c-24.994 24.993-65.515 24.994-90.51 0-24.993-24.994-24.993-65.516 0-90.51L218.991 202.5c16.16 41.197 49.303 74.335 90.516 90.503zM104 432c0-13.255-10.745-24-24-24s-24 10.745-24 24 10.745 24 24 24 24-10.745 24-24z\"],\n};\n\nvar icons$1 = /*#__PURE__*/Object.freeze({\n    __proto__: null,\n    createCheckbox: createCheckbox,\n    createIcon: createIcon\n});\n\nfunction attachDialogCloseHandlerWithParent(parent, closeHandler) {\n\n    var container = document.createElement(\"div\");\n    parent.appendChild(container);\n    container.appendChild(createIcon(\"times\"));\n    container.addEventListener('click', function (e) {\n        e.preventDefault();\n        e.stopPropagation();\n        closeHandler();\n    });\n}\n\nvar uiUtils = /*#__PURE__*/Object.freeze({\n    __proto__: null,\n    attachDialogCloseHandlerWithParent: attachDialogCloseHandlerWithParent\n});\n\n/**\n * Make the target element movable by clicking and dragging on the handle.  This is not a general purprose function,\n * it makes several options specific to igv dialogs, the primary one being that the\n * target is absolutely positioned in pixel coordinates\n\n */\n\nlet dragData;  // Its assumed we are only dragging one element at a time.\n\nfunction makeDraggable(target, handle, constraint) {\n\n    handle.addEventListener('mousedown', dragStart.bind(target));\n\n    function dragStart(event) {\n\n        event.stopPropagation();\n        event.preventDefault();\n\n        const dragFunction = drag.bind(this);\n        const dragEndFunction = dragEnd.bind(this);\n        const computedStyle = getComputedStyle(this);\n\n        dragData =\n            {\n                constraint,\n                dragFunction,\n                dragEndFunction,\n                screenX: event.screenX,\n                screenY: event.screenY,\n                top: parseInt(computedStyle.top.replace(\"px\", \"\")),\n                left: parseInt(computedStyle.left.replace(\"px\", \"\"))\n            };\n\n        document.addEventListener('mousemove', dragFunction);\n        document.addEventListener('mouseup', dragEndFunction);\n        document.addEventListener('mouseleave', dragEndFunction);\n        document.addEventListener('mouseexit', dragEndFunction);\n    }\n}\n\nfunction drag(event) {\n\n    if (!dragData) {\n        console.error(\"No drag data!\");\n        return;\n    }\n    event.stopPropagation();\n    event.preventDefault();\n    const dx = event.screenX - dragData.screenX;\n    const dy = event.screenY - dragData.screenY;\n\n    const left = dragData.left + dx;\n    const  top = dragData.constraint ? Math.max(dragData.constraint.minY, dragData.top  + dy) : dragData.top  + dy;\n\n    this.style.left = `${ left }px`;\n    this.style.top  = `${  top }px`;\n}\n\nfunction dragEnd(event) {\n\n    if (!dragData) {\n        console.error(\"No drag data!\");\n        return;\n    }\n    event.stopPropagation();\n    event.preventDefault();\n\n    const dragFunction = dragData.dragFunction;\n    const dragEndFunction = dragData.dragEndFunction;\n    document.removeEventListener('mousemove', dragFunction);\n    document.removeEventListener('mouseup', dragEndFunction);\n    document.removeEventListener('mouseleave', dragEndFunction);\n    document.removeEventListener('mouseexit', dragEndFunction);\n    dragData = undefined;\n}\n\nclass Dialog {\n\n    constructor({label, content, okHandler, cancelHandler}) {\n\n        const cancel = () => {\n            hide(this.elem);\n            if (typeof cancelHandler === 'function') {\n                cancelHandler(this);\n            }\n        };\n\n        // dialog container\n        this.elem = div({class: 'igv-ui-generic-dialog-container'});\n\n        // dialog header\n        const header = div({class: 'igv-ui-generic-dialog-header'});\n        this.elem.appendChild(header);\n\n        attachDialogCloseHandlerWithParent(header, cancel);\n\n        // dialog label\n        if(label) {\n            const labelDiv = div({class: 'igv-ui-dialog-one-liner'});\n            this.elem.appendChild(labelDiv);\n            labelDiv.innerHTML = label;\n        }\n\n        // input container\n        content.elem.style.margin = '8px';\n        this.elem.appendChild(content.elem);\n\n        // ok | cancel\n        const buttons = div({class: 'igv-ui-generic-dialog-ok-cancel'});\n        this.elem.appendChild(buttons);\n\n        // ok\n        this.ok = div();\n        buttons.appendChild(this.ok);\n        this.ok.textContent = 'OK';\n\n        // cancel\n        this.cancel = div();\n        buttons.appendChild(this.cancel);\n        this.cancel.textContent = 'Cancel';\n\n        this.ok.addEventListener('click',  (e) => {\n            hide(this.elem);\n            if (typeof okHandler === 'function') {\n                okHandler(this);\n            }\n        });\n\n        this.cancel.addEventListener('click', cancel);\n\n        makeDraggable(this.elem, header);\n\n\n        // Consume all clicks in component\n        this.elem.addEventListener('click', (e) => {\n            e.preventDefault();\n            e.stopPropagation();\n        });\n\n    }\n\n    present(options, e) {\n\n        this.label.textContent = options.label;\n        this.input.value = options.value;\n        this.callback = options.callback;\n\n        const page = pageCoordinates(e);\n        this.clampLocation(page.x, page.y);\n\n        show(this.elem);\n    }\n\n    clampLocation(pageX, pageY) {\n\n        let popoverRect = this.elem.getBoundingClientRect();\n        let parentRect = this.parent.getBoundingClientRect();\n        const y = Math.min(Math.max(pageY, parentRect.y), parentRect.y + parentRect.height - popoverRect.height);\n        const x = Math.min(Math.max(pageX, parentRect.x), parentRect.x + parentRect.width - popoverRect.width);\n        this.elem.style.left = x + \"px\";\n        this.elem.style.top = y + \"px\";\n    }\n}\n\nclass DataRangeDialog {\n\n    constructor(parent, okHandler) {\n\n        const panel = new Panel();\n        this.minbox = new Textbox({label: \"Minimum\", value: \"0\"});\n        panel.add(this.minbox);\n\n        this.maxbox = new Textbox({label: \"Maximum\", value: \"0\"});\n        panel.add(this.maxbox);\n\n        let callback;\n        if (okHandler) {\n            callback = (e) => {\n                okHandler(Number.parseFloat(this.minbox.value), Number.parseFloat(this.maxbox.value));\n            };\n        } else {\n            callback = (d) => {\n                console.log(`Minimum: ${this.minbox.value}`);\n                console.log(`Maximum: ${this.maxbox.value}`);\n            };\n        }\n\n        this.dialog = new Dialog({\n            //label: 'Multi-select',\n            content: panel,\n            okHandler: callback\n        });\n\n        // Overide some css styles -- TODO redesign this.\n        this.dialog.elem.style.position = \"absolute\";\n\n        hide(this.dialog.elem);\n        parent.appendChild(this.dialog.elem);\n    }\n\n    show({min, max}) {\n        if (min !== undefined) this.minbox.value = min.toString();\n        if (max !== undefined) this.maxbox.value = max.toString();\n        show(this.dialog.elem);\n    }\n}\n\nconst httpMessages =\n    {\n        \"401\": \"Access unauthorized\",\n        \"403\": \"Access forbidden\",\n        \"404\": \"Not found\"\n    };\n\n\nclass AlertDialog {\n    /**\n     * Initialize a new alert dialog\n     * @param parent\n     * @param alertProps - Optional - properties such as scroll to error\n     */\n    constructor(parent, alertProps) {\n        this.alertProps = Object.assign({\n            /** When an alert is presented - focus occur */\n            shouldFocus: true,\n            /** When focus occur - scroll into that element in the view */\n            preventScroll: false\n        }, alertProps);\n\n        // container\n        this.container = div({class: \"igv-ui-alert-dialog-container\"});\n        parent.appendChild(this.container);\n        this.container.setAttribute('tabIndex', '-1');\n\n        // header\n        const header = div();\n        this.container.appendChild(header);\n\n        this.errorHeadline = div();\n        header.appendChild(this.errorHeadline);\n        this.errorHeadline.textContent = '';\n\n        // body container\n        let bodyContainer = div({class: 'igv-ui-alert-dialog-body'});\n        this.container.appendChild(bodyContainer);\n\n        // body copy\n        this.body = div({class: 'igv-ui-alert-dialog-body-copy'});\n        bodyContainer.appendChild(this.body);\n\n        // ok container\n        let ok_container = div();\n        this.container.appendChild(ok_container);\n\n        // ok\n        this.ok = div();\n        ok_container.appendChild(this.ok);\n        this.ok.textContent = 'OK';\n\n        const okHandler = () => {\n\n            if (typeof this.callback === 'function') {\n                this.callback(\"OK\");\n                this.callback = undefined;\n            }\n            this.body.innerHTML = '';\n            hide(this.container);\n        };\n\n        this.ok.addEventListener('click', event => {\n\n            event.stopPropagation();\n\n            okHandler();\n        });\n\n        this.container.addEventListener('keypress', event => {\n\n            event.stopPropagation();\n\n            if ('Enter' === event.key) {\n                okHandler();\n            }\n        });\n\n        makeDraggable(this.container, header);\n\n        hide(this.container);\n    }\n\n    present(alert, callback) {\n\n        this.errorHeadline.textContent = alert.message ? 'ERROR' : '';\n        let string = alert.message || alert;\n\n        if (httpMessages.hasOwnProperty(string)) {\n            string = httpMessages[string];\n        }\n\n        const clean = purify.sanitize(string);\n\n        this.body.innerHTML = clean;\n        this.callback = callback;\n        show(this.container);\n        if (this.alertProps.shouldFocus) {\n            this.container.focus(\n                { preventScroll: this.alertProps.preventScroll }\n            );\n        }\n    }\n}\n\nclass AlertSingleton {\n    constructor(root) {\n\n        if (root) {\n            this.alertDialog = undefined;\n        }\n    }\n\n    init(root) {\n        this.alertDialog = new AlertDialog(root);\n    }\n\n    present(alert, callback) {\n        this.alertDialog.present(alert, callback);\n    }\n\n}\n\nvar alertSingleton = new AlertSingleton();\n\n// The global Alert dialog\n\nlet alertDialog;\n\nconst Alert = {\n\n    init(root, config={}) {\n\t    alertDialog = new AlertDialog(root, config);\n    },\n\n    presentAlert (alert, callback) {\n        if(!alertDialog) {\n            this.init(document.body);\n        }\n        alertDialog.present(alert, callback);\n    },\n};\n\nclass InputDialog {\n\n    constructor(parent) {\n\n        this.parent = parent;\n\n        // dialog container\n        this.container = div({class: 'igv-ui-generic-dialog-container'});\n        parent.appendChild(this.container);\n\n        // const { x, y, width, height } = this.container.getBoundingClientRect();\n        // console.log(`InputDialog - x ${ x } y ${ y } width ${ width } height ${ height }`)\n\n        // dialog header\n        const header = div({class: 'igv-ui-generic-dialog-header'});\n        this.container.appendChild(header);\n\n        // dialog label\n        this.label = div({class: 'igv-ui-generic-dialog-one-liner'});\n        this.container.appendChild(this.label);\n        this.label.text = 'Unlabeled';\n\n        // input container\n        this.input_container = div({class: 'igv-ui-generic-dialog-input'});\n        this.container.appendChild(this.input_container);\n        //\n        this.input = document.createElement(\"input\");\n        this.input_container.appendChild(this.input);\n\n\n        // ok | cancel\n        const buttons = div({class: 'igv-ui-generic-dialog-ok-cancel'});\n        this.container.appendChild(buttons);\n\n        // ok\n        this.ok = div();\n        buttons.appendChild(this.ok);\n        this.ok.textContent = 'OK';\n\n        // cancel\n        this.cancel = div();\n        buttons.appendChild(this.cancel);\n        this.cancel.textContent = 'Cancel';\n\n        hide(this.container);\n\n        this.input.addEventListener('keyup', e => {\n            if (13 === e.keyCode) {\n                if (typeof this.callback === 'function') {\n                    this.callback(this.input.value);\n                    this.callback = undefined;\n                }\n                this.input.value = undefined;\n                hide(this.container);\n            }\n        });\n\n        this.ok.addEventListener('click', () => {\n            if (typeof this.callback === 'function') {\n                this.callback(this.input.value);\n                this.callback = undefined;\n            }\n            this.input.value = undefined;\n            hide(this.container);\n        });\n\n        const cancel = () => {\n            this.input.value = '';\n            hide(this.container);\n        };\n\n        this.cancel.addEventListener('click', cancel);\n\n        attachDialogCloseHandlerWithParent(header, cancel);\n        makeDraggable(this.container, header);\n\n    }\n\n    get value() {\n        return purify.sanitize(this.input.value)\n    }\n\n    present(options, e) {\n\n        this.label.textContent = options.label;\n        this.input.value = options.value;\n        this.callback = options.callback || options.click;\n\n        show(this.container);\n        this.clampLocation(e.clientX, e.clientY);\n\n    }\n\n    clampLocation(clientX, clientY) {\n\n        const {width: w, height: h} = this.container.getBoundingClientRect();\n        const wh = window.innerHeight;\n        const ww = window.innerWidth;\n\n        const y = Math.min(wh - h, clientY);\n        const x = Math.min(ww - w, clientX);\n        this.container.style.left = `${x}px`;\n        this.container.style.top = `${y}px`;\n\n    }\n}\n\nconst appleCrayonPalette =\n    {\n        licorice: \"#000000\",\n        lead: \"#1e1e1e\",\n        tungsten: \"#3a3a3a\",\n        iron: \"#545453\",\n        steel: \"#6e6e6e\",\n        tin: \"#878687\",\n        nickel: \"#888787\",\n        aluminum: \"#a09fa0\",\n        magnesium: \"#b8b8b8\",\n        silver: \"#d0d0d0\",\n        mercury: \"#e8e8e8\",\n        snow: \"#ffffff\",\n        //\n        cayenne: \"#891100\",\n        mocha: \"#894800\",\n        aspargus: \"#888501\",\n        fern: \"#458401\",\n        clover: \"#028401\",\n        moss: \"#018448\",\n        teal: \"#008688\",\n        ocean: \"#004a88\",\n        midnight: \"#001888\",\n        eggplant: \"#491a88\",\n        plum: \"#891e88\",\n        maroon: \"#891648\",\n        //\n        maraschino: \"#ff2101\",\n        tangerine: \"#ff8802\",\n        lemon: \"#fffa03\",\n        lime: \"#83f902\",\n        spring: \"#05f802\",\n        seam_foam: \"#03f987\",\n        turquoise: \"#00fdff\",\n        aqua: \"#008cff\",\n        blueberry: \"#002eff\",\n        grape: \"#8931ff\",\n        magenta: \"#ff39ff\",\n        strawberry: \"#ff2987\",\n        //\n        salmon: \"#ff726e\",\n        cantaloupe: \"#ffce6e\",\n        banana: \"#fffb6d\",\n        honeydew: \"#cefa6e\",\n        flora: \"#68f96e\",\n        spindrift: \"#68fbd0\",\n        ice: \"#68fdff\",\n        sky: \"#6acfff\",\n        orchid: \"#6e76ff\",\n        lavender: \"#d278ff\",\n        bubblegum: \"#ff7aff\",\n        carnation: \"#ff7fd3\"\n    };\n\nconst nucleotideColorComponents = {\n    \"A\": [0, 200, 0],\n    \"C\": [0, 0, 200],\n    \"T\": [255, 0, 0],\n    \"G\": [209, 113, 5],\n    \"a\": [0, 200, 0],\n    \"c\": [0, 0, 200],\n    \"t\": [255, 0, 0],\n    \"g\": [209, 113, 5],\n    \"N\": [80, 80, 80]\n};\n\nconst nucleotideColors = {\n    \"A\": \"rgb(  0, 200,   0)\",\n    \"C\": \"rgb(  0,   0, 200)\",\n    \"T\": \"rgb(255,   0,   0)\",\n    \"G\": \"rgb(209, 113,   5)\",\n    \"a\": \"rgb(  0, 200,   0)\",\n    \"c\": \"rgb(  0,   0, 200)\",\n    \"t\": \"rgb(255,   0,   0)\",\n    \"g\": \"rgb(209, 113,   5)\",\n    \"N\": \"rgb(80, 80, 80)\"\n};\n\nconst colorPalettes = {\n\n    Set1:\n        [\n            \"rgb(228,26,28)\",\n            \"rgb(55,126,184)\",\n            \"rgb(77,175,74)\",\n            \"rgb(166,86,40)\",\n            \"rgb(152,78,163)\",\n            \"rgb(255,127,0)\",\n            \"rgb(247,129,191)\",\n            \"rgb(153,153,153)\",\n            \"rgb(255,255,51)\"\n        ],\n\n    Dark2:\n        [\n            \"rgb(27,158,119)\",\n            \"rgb(217,95,2)\",\n            \"rgb(117,112,179)\",\n            \"rgb(231,41,138)\",\n            \"rgb(102,166,30)\",\n            \"rgb(230,171,2)\",\n            \"rgb(166,118,29)\",\n            \"rgb(102,102,102)\"\n        ],\n\n    Set2:\n        [\n            \"rgb(102, 194,165)\",\n            \"rgb(252,141,98)\",\n            \"rgb(141,160,203)\",\n            \"rgb(231,138,195)\",\n            \"rgb(166,216,84)\",\n            \"rgb(255,217,47)\",\n            \"rgb(229,196,148)\",\n            \"rgb(179,179,179)\"\n        ],\n\n    Set3:\n        [\n            \"rgb(141,211,199)\",\n            \"rgb(255,255,179)\",\n            \"rgb(190,186,218)\",\n            \"rgb(251,128,114)\",\n            \"rgb(128,177,211)\",\n            \"rgb(253,180,98)\",\n            \"rgb(179,222,105)\",\n            \"rgb(252,205,229)\",\n            \"rgb(217,217,217)\",\n            \"rgb(188,128,189)\",\n            \"rgb(204,235,197)\",\n            \"rgb(255,237,111)\"\n        ],\n\n    Pastel1:\n        [\n            \"rgb(251,180,174)\",\n            \"rgb(179,205,227)\",\n            \"rgb(204,235,197)\",\n            \"rgb(222,203,228)\",\n            \"rgb(254,217,166)\",\n            \"rgb(255,255,204)\",\n            \"rgb(229,216,189)\",\n            \"rgb(253,218,236)\"\n        ],\n\n    Pastel2:\n        [\n            \"rgb(173,226,207)\",\n            \"rgb(253,205,172)\",\n            \"rgb(203,213,232)\",\n            \"rgb(244,202,228)\",\n            \"rgb(230,245,201)\",\n            \"rgb(255,242,174)\",\n            \"rgb(243,225,206)\"\n        ],\n\n    Accent:\n        [\n            \"rgb(127,201,127)\",\n            \"rgb(190,174,212)\",\n            \"rgb(253,192,134)\",\n            \"rgb(255,255,153)\",\n            \"rgb(56,108,176)\",\n            \"rgb(240,2,127)\",\n            \"rgb(191,91,23)\"\n        ]\n};\n\nfunction PaletteColorTable  (palette) {\n\n    this.colors = colorPalettes[palette];\n\n    if (!Array.isArray(this.colors)) this.colors = [];\n    this.colorTable = {};\n    this.nextIdx = 0;\n    this.colorGenerator = new RandomColorGenerator();\n\n}\n\nPaletteColorTable.prototype.getColor = function (key) {\n\n    if (!this.colorTable.hasOwnProperty(key)) {\n        if (this.nextIdx < this.colors.length) {\n            this.colorTable[key] = this.colors[this.nextIdx];\n        } else {\n            this.colorTable[key] = this.colorGenerator.get();\n        }\n        this.nextIdx++;\n    }\n    return this.colorTable[key];\n};\n\n// Random color generator from https://github.com/sterlingwes/RandomColor/blob/master/rcolor.js\n// Free to use & distribute under the MIT license\n// Wes Johnson (@SterlingWes)\n//\n// inspired by http://martin.ankerl.com/2009/12/09/how-to-create-random-colors-programmatically/\nfunction RandomColorGenerator() {\n    this.hue = Math.random();\n    this.goldenRatio = 0.618033988749895;\n    this.hexwidth = 2;\n}\n\nRandomColorGenerator.prototype.hsvToRgb = function (h, s, v) {\n    var h_i = Math.floor(h * 6),\n        f = h * 6 - h_i,\n        p = v * (1 - s),\n        q = v * (1 - f * s),\n        t = v * (1 - (1 - f) * s),\n        r = 255,\n        g = 255,\n        b = 255;\n    switch (h_i) {\n        case 0:\n            r = v, g = t, b = p;\n            break;\n        case 1:\n            r = q, g = v, b = p;\n            break;\n        case 2:\n            r = p, g = v, b = t;\n            break;\n        case 3:\n            r = p, g = q, b = v;\n            break;\n        case 4:\n            r = t, g = p, b = v;\n            break;\n        case 5:\n            r = v, g = p, b = q;\n            break;\n    }\n    return [Math.floor(r * 256), Math.floor(g * 256), Math.floor(b * 256)];\n};\n\nRandomColorGenerator.prototype.padHex = function (str) {\n    if (str.length > this.hexwidth) return str;\n    return new Array(this.hexwidth - str.length + 1).join('0') + str;\n};\n\nRandomColorGenerator.prototype.get = function (saturation, value) {\n    this.hue += this.goldenRatio;\n    this.hue %= 1;\n    if (typeof saturation !== \"number\") saturation = 0.5;\n    if (typeof value !== \"number\") value = 0.95;\n    var rgb = this.hsvToRgb(this.hue, saturation, value);\n\n    return \"#\" + this.padHex(rgb[0].toString(16))\n        + this.padHex(rgb[1].toString(16))\n        + this.padHex(rgb[2].toString(16));\n\n};\n\nclass GenericContainer {\n\n    constructor({parent,  top, left, width, height, border, closeHandler}) {\n\n        let container = div({class: 'igv-ui-generic-container'});\n        parent.appendChild(container);\n        hide(container);\n        this.container = container;\n\n        if(top !== undefined) {\n            this.container.style.top = `${ top }px`;\n        }\n        if(left !== undefined) {\n            this.container.style.left = `${ left }px`;\n        }\n        if (width !== undefined) {\n            this.container.style.width = `${ width }px`;\n        }\n        if (height !== undefined) {\n            this.container.style.height = `${ height }px`;\n        }\n        if(border) {\n            this.container.style.border = border;\n        }\n        //\n        // let bbox = parent.getBoundingClientRect();\n        // this.origin = {x: bbox.x, y: bbox.y};\n        // this.container.offset({left: this.origin.x, top: this.origin.y});\n\n        // header\n        const header = div();\n        this.container.appendChild(header);\n\n        // close button\n        attachDialogCloseHandlerWithParent(header, (e) => {\n            hide(this.container);\n            if(typeof closeHandler === \"function\") {\n                closeHandler(e);\n            }\n        });\n\n        makeDraggable(this.container, header);\n    }\n\n    show() {\n        show(this.container);\n    }\n\n    hide() {\n        hide(this.container);\n    }\n\n    dispose() {\n        if(this.container.parent)  {\n            this.container.parent.removeChild(this.container);\n        }\n    }\n}\n\nclass ColorPicker extends GenericContainer {\n\n    constructor({parent, top, left, width, height, defaultColors, colorHandler}) {\n\n        super({ parent, top, left, width, height, border: '1px solid gray'});\n\n        createColorSwatchSelector(this.container, colorHandler, defaultColors);\n    }\n\n}\n\nconst createColorSwatchSelector = (container, colorHandler, defaultColors) => {\n\n    const hexColorStrings = Object.values(appleCrayonPalette);\n\n    for (let hexColorString of hexColorStrings) {\n        const swatch = div({ class: 'igv-ui-color-swatch' });\n        container.appendChild(swatch);\n        decorateSwatch(swatch, hexColorString, colorHandler);\n    }\n\n    if (defaultColors) {\n        for (let hexColorString of defaultColors) {\n            const swatch = div({ class: 'igv-ui-color-swatch' });\n            container.appendChild(swatch);\n            decorateSwatch(swatch, hexColorString, colorHandler);\n        }\n    }\n\n};\n\nconst decorateSwatch = (swatch, hexColorString, colorHandler) => {\n\n    swatch.style.backgroundColor = hexColorString;\n\n    swatch.addEventListener('mouseenter', e => swatch.style.borderColor = hexColorString);\n\n    swatch.addEventListener('mouseleave', e => swatch.style.borderColor = 'white');\n\n    swatch.addEventListener('click', event => {\n        event.stopPropagation();\n        colorHandler(hexColorString);\n    });\n\n    swatch.addEventListener('touchend', event => {\n        event.stopPropagation();\n        colorHandler(hexColorString);\n    });\n\n};\n\nclass Popover {\n\n    constructor(parent, title) {\n\n        this.parent = parent;\n\n        // popover\n        this.popover = div({ class: \"igv-ui-popover\" });\n        parent.appendChild(this.popover);\n\n        // header\n        const popoverHeader = div();\n        this.popover.appendChild(popoverHeader);\n\n        const titleElement = div();\n        popoverHeader.appendChild(titleElement);\n        if (title) {\n            titleElement.textContent = title;\n        }\n\n        attachDialogCloseHandlerWithParent(popoverHeader,  () => this.hide());\n        makeDraggable(this.popover, popoverHeader);\n\n        // content\n        this.popoverContent = div();\n        this.popover.appendChild(this.popoverContent);\n\n        this.popover.style.display = 'none';\n\n\n    }\n\n    presentContentWithEvent(e, content) {\n\n        this.popover.style.display = 'block';\n\n        this.popoverContent.innerHTML = content;\n\n        present(e, this.popover, this.popoverContent);\n\n    }\n\n    presentMenu(e, menuItems) {\n\n        if (0 === menuItems.length) {\n            return\n        }\n\n        this.popover.style.display = 'block';\n\n        const menuElements = createMenuElements(menuItems, this.popover);\n        for (let item of menuElements) {\n            this.popoverContent.appendChild(item.object);\n        }\n\n        present(e, this.popover, this.popoverContent);\n    }\n\n    hide() {\n        this.popover.style.display = 'none';\n        this.dispose();\n    }\n\n    dispose() {\n\n        if (this.popover) {\n            this.popover.parentNode.removeChild(this.popover);\n        }\n\n        const keys = Object.keys(this);\n        for (let key of keys) {\n            this[ key ] = undefined;\n        }\n    }\n\n}\n\nfunction present(e, popover, popoverContent) {\n\n    const { x, y, width } = translateMouseCoordinates(e, popover.parentNode);\n    popover.style.top  = `${ y }px`;\n\n    const { width: w } = popover.getBoundingClientRect();\n\n    const xmax = x + w;\n    const delta = xmax - width;\n\n    popover.style.left = `${ xmax > width ? (x - delta) : x }px`;\n    popoverContent.style.maxWidth = `${ Math.min(w, width) }px`;\n\n\n}\n\nfunction createMenuElements(itemList, popover) {\n\n    const list  = itemList.map(function (item, i) {\n        let elem;\n\n        if (typeof item === 'string') {\n            elem = div();\n            elem.innerHTML = item;\n        } else if (typeof item === 'Node') {\n            elem = item;\n        } else {\n            if (typeof item.init === 'function') {\n                item.init();\n            }\n\n            if (\"checkbox\" === item.type) {\n                elem = createCheckbox(\"Show all bases\", item.value);\n            } else if(\"color\" === item.type) {\n                const colorPicker = new ColorPicker({\n                    parent: popover.parentElement,\n                    width: 364,\n                    //defaultColor: 'aqua',\n                    colorHandler: (color) => item.click(color)\n                });\n                elem = div();\n                if (typeof item.label === 'string') {\n                    elem.innerHTML = item.label;\n                }\n                const clickHandler =  e => {\n                    colorPicker.show();\n                    hide(popover);\n                    e.preventDefault();\n                    e.stopPropagation();\n                };\n                elem.addEventListener('click', clickHandler);\n                elem.addEventListener('touchend', clickHandler);\n                elem.addEventListener('mouseup', function (e) {\n                    e.preventDefault();\n                    e.stopPropagation();\n                });\n            }\n\n            else {\n                elem = div();\n                if (typeof item.label === 'string') {\n                    elem.innerHTML = item.label;\n                }\n            }\n\n            if (item.click && \"color\" !== item.type) {\n                elem.addEventListener('click', handleClick);\n                elem.addEventListener('touchend', handleClick);\n                elem.addEventListener('mouseup', function (e) {\n                    e.preventDefault();\n                    e.stopPropagation();\n                });\n\n                // eslint-disable-next-line no-inner-declarations\n                function handleClick(e) {\n                    item.click();\n                    hide(popover);\n                    e.preventDefault();\n                    e.stopPropagation();\n                }\n            }\n        }\n\n\n        return { object: elem, init: item.init };\n    });\n\n    return list;\n}\n\nconst style = {\n    display: 'flex',\n    flexDirection: 'row',\n    alignItems: 'center',\n    backgroundColor: 'transparent',\n};\n\nclass Checkbox {\n\n    constructor({selected, label, onchange}) {\n\n        this.state = selected;\n        this.onchange = onchange;\n        this.elem = div({style: style});\n\n        const svgDiv = div({\n            style: {\n                width: '14px',\n                height: '14px',\n                borderColor: 'gray',\n                borderWidth: '1px',\n                borderStyle: 'solid'\n            }\n        });\n        this.svg = createIcon('check', (true === selected ? '#444' : 'transparent'));\n        this.svg.style.width = '12px';\n        this.svg.style.height = '12px';\n        svgDiv.appendChild(this.svg);\n        this.elem.appendChild(svgDiv);\n\n        if (label) {\n            const d = div({style: {marginLeft: '5px'}}); //{ class: 'igv-some-label-class' });\n            d.textContent = label;\n            this.elem.appendChild(d);\n        }\n\n        const handleClick = (e) => {\n            e.preventDefault();\n            e.stopPropagation();\n            const newState = !this.state;\n            this.selected = newState;\n            if (typeof this.onchange === 'function') {\n                this.onchange(newState);\n            }\n        };\n        this.elem.addEventListener('click', handleClick);\n        this.elem.addEventListener('touchend', handleClick);\n    }\n\n    set selected(selected) {\n        this.state = selected;\n        const p = this.svg.querySelector('path');\n        p.setAttributeNS(null, 'fill', (true === selected ? '#444' : 'transparent'));\n    }\n\n    get selected() {\n        return this.state;\n    }\n\n    onchange(handler) {\n        this.onchange = handler;\n    }\n\n\n}\n\nclass GenericColorPicker extends GenericContainer {\n\n    constructor({parent, width}) {\n        super({parent, width, border: '1px solid gray'});\n    }\n\n    configure(defaultColors, colorHandlers) {\n\n        this.colorHandlers = colorHandlers;\n\n        // active color handler defaults to handler with 'color' as key\n        this.setActiveColorHandler('color');\n\n        this.createSwatches(defaultColors);\n\n    }\n\n    setActiveColorHandler(option) {\n        this.activeColorHandler = this.colorHandlers[option];\n    }\n\n    createSwatches(defaultColors) {\n\n        this.container.querySelectorAll('.igv-ui-color-swatch').forEach(swatch => swatch.remove());\n\n        const hexColorStrings = Object.values(appleCrayonPalette);\n\n        for (let hexColorString of hexColorStrings) {\n            const swatch = div({class: 'igv-ui-color-swatch'});\n            this.container.appendChild(swatch);\n            this.decorateSwatch(swatch, hexColorString);\n        }\n\n        if (defaultColors) {\n            for (let hexColorString of defaultColors) {\n                const swatch = div({class: 'igv-ui-color-swatch'});\n                this.container.appendChild(swatch);\n                this.decorateSwatch(swatch, hexColorString);\n            }\n        }\n\n    }\n\n    decorateSwatch(swatch, hexColorString) {\n\n        swatch.style.backgroundColor = hexColorString;\n\n        swatch.addEventListener('mouseenter', () => swatch.style.borderColor = hexColorString);\n\n        swatch.addEventListener('mouseleave', () => swatch.style.borderColor = 'white');\n\n        swatch.addEventListener('click', event => {\n            event.stopPropagation();\n            this.activeColorHandler(hexColorString);\n        });\n\n        swatch.addEventListener('touchend', event => {\n            event.stopPropagation();\n            this.activeColorHandler(hexColorString);\n        });\n\n    }\n\n}\n\n/**\n * Create a table with an optional row click handler *\n *\n * @param tableConfig {\n *     headers: column headers (strings)\n *     rows: row data (array of arrays, 1 for ecah row)\n *     rowClickHandler:  Optional click handler for a row.  Supplied function will receive a row's data as an array\n * }\n * @returns {HTMLTableElement}\n */\nfunction createTable(tableConfig) {\n\n    const table = document.createElement(\"table\");\n    table.classList.add(\"igv-ui-table\");\n    table.id = \"variant_table\";\n\n    const thead = document.createElement('thead');\n    table.appendChild(thead);\n    const headerRow = thead.insertRow(0);\n\n    const headers = tableConfig.headers;\n    for (let j = 0; j < headers.length; j++) {\n        var cell = document.createElement(\"th\");\n        headerRow.appendChild(cell);\n        cell.innerHTML = headers[j];\n    }\n\n    const tbody = document.createElement('tbody');\n    table.appendChild(tbody);\n    const tableRows = tableConfig.rows;\n    for (let rowData of tableRows) {\n\n        const row = document.createElement(\"tr\");\n        tbody.appendChild(row);\n\n        for (let j = 0; j < headers.length; j++) {\n            var value = rowData[j];\n            cell = document.createElement(\"td\");\n            row.appendChild(cell);\n            cell.innerHTML = value;\n        }\n\n        if (tableConfig.rowClickHandler) {\n            row.onclick = (event) => {\n                tableConfig.rowClickHandler(rowData);\n            };\n        }\n    }\n\n    return table\n\n}\n\n/**\n * Wraps a simple table (see components/table.js) in a popup component with drag bar and close control.  The table\n * is initially hidden (display == none)\n *\n */\n\nclass IGVTable {\n\n    /**\n     *\n     * @param parent - parent element for the popup's html element\n     * @param tableConfig - see components/table.js\n     */\n    constructor(parent, tableConfig) {\n\n        this.parent = parent;\n\n        // popover\n        this.popover = div({class: \"igv-ui-popover\"});\n        parent.appendChild(this.popover);\n\n        // header\n        const popoverHeader = div();\n        this.popover.appendChild(popoverHeader);\n\n        const titleElement = div();\n        popoverHeader.appendChild(titleElement);\n        if (tableConfig.title) {\n            titleElement.innerHTML = tableConfig.title;\n        }\n\n        attachDialogCloseHandlerWithParent(popoverHeader, () => this.hide());\n        makeDraggable(this.popover, popoverHeader);\n\n        const tableContainer = document.createElement(\"div\");\n        tableContainer.style.maxHeight = tableConfig.maxHeight ? tableConfig.maxHeight + \"px\" : \"800px\";\n        tableContainer.style.overflow = \"auto\";\n        this.popover.appendChild(tableContainer);\n\n        // TODO -- this will be passed as an argument\n\n        const table = createTable(tableConfig);\n        tableContainer.appendChild(table);\n\n        this.popover.style.display = 'none';\n\n    }\n\n    show() {\n        this.popover.style.display = 'block';\n    }\n\n    hide() {\n        this.popover.style.display = 'none';\n    }\n\n    dispose() {\n\n        if (this.popover) {\n            this.popover.parentNode.removeChild(this.popover);\n        }\n    }\n\n}\n\nfunction embedCSS() {\n    const style = document.createElement('style');\n    style.setAttribute('type', 'text/css');\n    style.setAttribute('title', 'igv-ui.css');\n    style.innerHTML = `.igv-ui-popover {\n  cursor: default;\n  position: absolute;\n  z-index: 2048;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: 1px;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: small;\n  background-color: white;\n}\n.igv-ui-popover > div:first-child {\n  display: flex;\n  flex-direction: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-ui-popover > div:first-child > div:first-child {\n  margin-left: 4px;\n}\n.igv-ui-popover > div:first-child > div:last-child {\n  margin-right: 4px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-ui-popover > div:first-child > div:last-child:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-ui-popover > div:last-child {\n  overflow-y: auto;\n  overflow-x: hidden;\n  max-height: 400px;\n  max-width: 800px;\n  background-color: white;\n}\n.igv-ui-popover > div:last-child > div {\n  user-select: all;\n  margin-left: 4px;\n  margin-right: 4px;\n  min-width: 220px;\n  overflow-x: hidden;\n  text-overflow: ellipsis;\n  white-space: nowrap;\n}\n.igv-ui-popover > div:last-child > div > span {\n  font-weight: bolder;\n}\n.igv-ui-popover > div:last-child hr {\n  width: 100%;\n}\n\n.igv-ui-alert-dialog-container {\n  box-sizing: content-box;\n  position: absolute;\n  z-index: 2048;\n  top: 50%;\n  left: 50%;\n  width: 400px;\n  height: 200px;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  outline: none;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 15px;\n  font-weight: 400;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n}\n.igv-ui-alert-dialog-container > div:first-child {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-ui-alert-dialog-container > div:first-child div:first-child {\n  padding-left: 8px;\n}\n.igv-ui-alert-dialog-container .igv-ui-alert-dialog-body {\n  -webkit-user-select: text;\n  -moz-user-select: text;\n  -ms-user-select: text;\n  user-select: text;\n  color: #373737;\n  width: 100%;\n  height: calc(100% - 24px - 64px);\n  overflow-y: scroll;\n}\n.igv-ui-alert-dialog-container .igv-ui-alert-dialog-body .igv-ui-alert-dialog-body-copy {\n  margin: 16px;\n  width: auto;\n  height: auto;\n  overflow-wrap: break-word;\n  word-break: break-word;\n  background-color: white;\n  border: unset;\n}\n.igv-ui-alert-dialog-container > div:last-child {\n  width: 100%;\n  margin-bottom: 10px;\n  background-color: white;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: center;\n  align-items: center;\n}\n.igv-ui-alert-dialog-container > div:last-child div {\n  margin: unset;\n  width: 40px;\n  height: 30px;\n  line-height: 30px;\n  text-align: center;\n  color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: small;\n  font-weight: 400;\n  border-color: #2B81AF;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 4px;\n  background-color: #2B81AF;\n}\n.igv-ui-alert-dialog-container > div:last-child div:hover {\n  cursor: pointer;\n  border-color: #25597f;\n  background-color: #25597f;\n}\n\n.igv-ui-color-swatch {\n  position: relative;\n  box-sizing: content-box;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: wrap;\n  justify-content: center;\n  align-items: center;\n  width: 32px;\n  height: 32px;\n  border-style: solid;\n  border-width: 2px;\n  border-color: white;\n  border-radius: 4px;\n}\n\n.igv-ui-color-swatch:hover {\n  border-color: dimgray;\n}\n\n.igv-ui-colorpicker-menu-close-button {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  width: 100%;\n  height: 32px;\n  margin-top: 4px;\n  margin-bottom: 4px;\n  padding-right: 8px;\n}\n.igv-ui-colorpicker-menu-close-button i.fa {\n  display: block;\n  margin-left: 4px;\n  margin-right: 4px;\n  color: #5f5f5f;\n}\n.igv-ui-colorpicker-menu-close-button i.fa:hover,\n.igv-ui-colorpicker-menu-close-button i.fa:focus,\n.igv-ui-colorpicker-menu-close-button i.fa:active {\n  cursor: pointer;\n  color: #0f0f0f;\n}\n\n.igv-ui-generic-dialog-container {\n  box-sizing: content-box;\n  position: fixed;\n  top: 0;\n  left: 0;\n  width: 300px;\n  height: 200px;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  z-index: 2048;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header div {\n  margin-right: 4px;\n  margin-bottom: 2px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header div:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-one-liner {\n  color: #373737;\n  width: 95%;\n  height: 24px;\n  line-height: 24px;\n  text-align: left;\n  margin-top: 8px;\n  padding-left: 8px;\n  overflow-wrap: break-word;\n  background-color: white;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input {\n  margin-top: 8px;\n  width: 95%;\n  height: 24px;\n  color: #373737;\n  line-height: 24px;\n  padding-left: 8px;\n  background-color: white;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input div {\n  width: 30%;\n  height: 100%;\n  font-size: 16px;\n  text-align: right;\n  padding-right: 8px;\n  background-color: white;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input input {\n  display: block;\n  height: 100%;\n  width: 100%;\n  padding-left: 4px;\n  font-family: \"Open Sans\", sans-serif;\n  font-weight: 400;\n  color: #373737;\n  text-align: left;\n  outline: none;\n  border-style: solid;\n  border-width: thin;\n  border-color: #7F7F7F;\n  background-color: white;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input input {\n  width: 50%;\n  font-size: 16px;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input {\n  margin-top: 8px;\n  width: calc(100% - 16px);\n  height: 24px;\n  color: #373737;\n  line-height: 24px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input input {\n  display: block;\n  height: 100%;\n  width: 100%;\n  padding-left: 4px;\n  font-family: \"Open Sans\", sans-serif;\n  font-weight: 400;\n  color: #373737;\n  text-align: left;\n  outline: none;\n  border-style: solid;\n  border-width: thin;\n  border-color: #7F7F7F;\n  background-color: white;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input input {\n  font-size: 16px;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel {\n  width: 100%;\n  height: 28px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div {\n  margin-top: 32px;\n  color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  width: 75px;\n  height: 28px;\n  line-height: 28px;\n  text-align: center;\n  border-color: transparent;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 2px;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:first-child {\n  margin-left: 32px;\n  margin-right: 0;\n  background-color: #5ea4e0;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:last-child {\n  margin-left: 0;\n  margin-right: 32px;\n  background-color: #c4c4c4;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:first-child:hover {\n  cursor: pointer;\n  background-color: #3b5c7f;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:last-child:hover {\n  cursor: pointer;\n  background-color: #7f7f7f;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok {\n  width: 100%;\n  height: 36px;\n  margin-top: 32px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok div {\n  width: 98px;\n  height: 36px;\n  line-height: 36px;\n  text-align: center;\n  color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  border-color: white;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 4px;\n  background-color: #2B81AF;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok div:hover {\n  cursor: pointer;\n  background-color: #25597f;\n}\n\n.igv-ui-generic-container {\n  box-sizing: content-box;\n  position: absolute;\n  z-index: 2048;\n  background-color: white;\n  cursor: pointer;\n  display: flex;\n  flex-direction: row;\n  flex-wrap: wrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-ui-generic-container > div:first-child {\n  cursor: move;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  height: 24px;\n  width: 100%;\n  background-color: #dddddd;\n}\n.igv-ui-generic-container > div:first-child > div {\n  display: block;\n  color: #5f5f5f;\n  cursor: pointer;\n  width: 14px;\n  height: 14px;\n  margin-right: 8px;\n  margin-bottom: 4px;\n}\n\n.igv-ui-dialog {\n  z-index: 2048;\n  position: fixed;\n  width: fit-content;\n  height: fit-content;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  background-color: white;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n}\n.igv-ui-dialog .igv-ui-dialog-header {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-ui-dialog .igv-ui-dialog-header div {\n  margin-right: 4px;\n  margin-bottom: 2px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-ui-dialog .igv-ui-dialog-header div:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-ui-dialog .igv-ui-dialog-one-liner {\n  width: 95%;\n  height: 24px;\n  line-height: 24px;\n  text-align: left;\n  margin: 8px;\n  overflow-wrap: break-word;\n  background-color: white;\n  font-weight: bold;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel {\n  width: 100%;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div {\n  margin: 16px;\n  margin-top: 32px;\n  color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  width: 75px;\n  height: 28px;\n  line-height: 28px;\n  text-align: center;\n  border-color: transparent;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 2px;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div:first-child {\n  background-color: #5ea4e0;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div:last-child {\n  background-color: #c4c4c4;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div:first-child:hover {\n  cursor: pointer;\n  background-color: #3b5c7f;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div:last-child:hover {\n  cursor: pointer;\n  background-color: #7f7f7f;\n}\n.igv-ui-dialog .igv-ui-dialog-ok {\n  width: 100%;\n  height: 36px;\n  margin-top: 32px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-dialog .igv-ui-dialog-ok div {\n  width: 98px;\n  height: 36px;\n  line-height: 36px;\n  text-align: center;\n  color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  border-color: white;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 4px;\n  background-color: #2B81AF;\n}\n.igv-ui-dialog .igv-ui-dialog-ok div:hover {\n  cursor: pointer;\n  background-color: #25597f;\n}\n\n.igv-ui-panel, .igv-ui-panel-row, .igv-ui-panel-column {\n  z-index: 2048;\n  background-color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  display: flex;\n  justify-content: flex-start;\n  align-items: flex-start;\n}\n\n.igv-ui-panel-column {\n  display: flex;\n  flex-direction: column;\n}\n\n.igv-ui-panel-row {\n  display: flex;\n  flex-direction: row;\n}\n\n.igv-ui-textbox {\n  background-color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  display: flex;\n  justify-content: flex-start;\n  align-items: flex-start;\n}\n\n.igv-ui-table {\n  background-color: white;\n}\n\n.igv-ui-table thead {\n  position: sticky;\n  top: 0;\n}\n\n.igv-ui-table th {\n  text-align: left;\n}\n\n.igv-ui-table td {\n  padding-right: 20px;\n}\n\n.igv-ui-table tr:hover {\n  background-color: lightblue;\n}\n\n/*# sourceMappingURL=igv-ui.css.map */\n`;\n    document.head.append(style);\n}\n\nif (typeof document !== 'undefined') {\n\n    if (!stylesheetExists(\"igv-ui.css\")) {\n        embedCSS();\n    }\n\n    function stylesheetExists(stylesheetName) {\n        for (let ss of document.styleSheets) {\n            ss = ss.href ? ss.href.replace(/^.*[\\\\\\/]/, '') : '';\n            if (ss === stylesheetName) {\n                return true\n            }\n        }\n        return false\n    }\n}\n\nexport { Alert, AlertDialog, alertSingleton as AlertSingleton, Checkbox, ColorPicker, domUtils as DOMUtils, DataRangeDialog, Dialog, GenericColorPicker, GenericContainer, IGVTable, icons$1 as Icon, InputDialog, PaletteColorTable, Panel, Popover, Textbox, uiUtils as UIUtils, appleCrayonPalette, createColorSwatchSelector, makeDraggable, nucleotideColorComponents, nucleotideColors };\n","import {DOMUtils, Icon} from \"../node_modules/igv-ui/dist/igv-ui.js\"\n\nfunction createCheckbox(name, initialState) {\n\n    const container = DOMUtils.div({class: 'igv-menu-popup-check-container'})\n\n    const div = DOMUtils.div()\n    container.appendChild(div)\n\n    const svg = Icon.createIcon('check', (true === initialState ? '#444' : 'transparent'))\n    div.appendChild(svg)\n\n    const label = DOMUtils.div()\n    label.innerText = name\n    container.appendChild(label)\n\n    return container\n}\n\nexport {createCheckbox}\n\n\n","import $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport {createCheckbox} from \"../igv-icons.js\"\n\n/**\n * Configure item list for track \"gear\" menu.\n * @param trackView\n */\nconst MenuUtils = {\n\n    trackMenuItemList: function (trackView) {\n\n        const vizWindowTypes = new Set(['alignment', 'annotation', 'variant', 'eqtl', 'snp'])\n\n        const hasVizWindow = trackView.track.config && trackView.track.config.visibilityWindow !== undefined\n\n        let menuItems = []\n\n        if (trackView.track.config.type !== 'sequence') {\n            menuItems.push(trackRenameMenuItem(trackView))\n            menuItems.push(trackHeightMenuItem(trackView))\n        }\n\n        if (this.showColorPicker(trackView.track)) {\n            menuItems.push('<hr/>')\n            menuItems.push(colorPickerMenuItem({trackView, label: \"Set track color\", option: \"color\"}))\n            menuItems.push(unsetColorMenuItem({trackView, label: \"Unset track color\"}))\n           if(trackView.track.config.type === 'wig' || trackView.track.config.type === 'annotation') {\n               menuItems.push(colorPickerMenuItem({trackView, label: \"Set alt color\", option: \"altColor\"}))\n               menuItems.push(unsetAltColorMenuItem({trackView, label: \"Unset alt color\"}))\n           }\n        }\n\n        if (trackView.track.menuItemList) {\n            menuItems = menuItems.concat(trackView.track.menuItemList())\n        }\n\n        if (hasVizWindow || vizWindowTypes.has(trackView.track.type)) {\n            menuItems.push('<hr/>')\n            menuItems.push(visibilityWindowMenuItem(trackView))\n        }\n\n        if (trackView.track.removable !== false) {\n            menuItems.push('<hr/>')\n            menuItems.push(trackRemovalMenuItem(trackView))\n        }\n\n        return menuItems\n    },\n\n    numericDataMenuItems: function (trackView) {\n\n        const menuItems = []\n\n        menuItems.push('<hr/>')\n\n        // Data range\n        const object = $('<div>')\n        object.text('Set data range')\n\n        const click = () => {\n            trackView.browser.dataRangeDialog.configure(trackView)\n            trackView.browser.dataRangeDialog.present($(trackView.browser.columnContainer))\n        }\n        menuItems.push({object, click})\n\n        if (trackView.track.logScale !== undefined) {\n            menuItems.push({\n                    object: $(createCheckbox(\"Log scale\", trackView.track.logScale)),\n                    click: () => {\n                        trackView.track.logScale = !trackView.track.logScale\n                        trackView.repaintViews()\n                    }\n                }\n            )\n        }\n\n        menuItems.push({\n                object: $(createCheckbox(\"Autoscale\", trackView.track.autoscale)),\n                click: () => {\n                    trackView.track.autoscale = !trackView.track.autoscale\n                    trackView.updateViews()\n                }\n            }\n        )\n\n\n        return menuItems\n    },\n\n    trackMenuItemListHelper: function (itemList, menuPopup) {\n\n        var list = []\n\n        if (itemList.length > 0) {\n\n            list = itemList.map(function (item, i) {\n                var $e\n\n                // name and object fields checked for backward compatibility\n                if (item.name) {\n                    $e = $('<div>')\n                    $e.text(item.name)\n                } else if (item.object) {\n                    $e = item.object\n                } else if (typeof item.label === 'string') {\n                    $e = $('<div>')\n                    $e.html(item.label)\n                } else if (typeof item === 'string') {\n\n                    if (item.startsWith(\"<\")) {\n                        $e = $(item)\n                    } else {\n                        $e = $(\"<div>\" + item + \"</div>\")\n                    }\n                }\n\n                if (0 === i) {\n                    $e.addClass('igv-track-menu-border-top')\n                }\n\n                if (item.click) {\n                    $e.on('click', handleClick)\n                    $e.on('touchend', function (e) {\n                        handleClick(e)\n                    })\n                    $e.on('mouseup', function (e) {\n                        e.preventDefault()\n                        e.stopPropagation()\n                    })\n\n                    // eslint-disable-next-line no-inner-declarations\n                    function handleClick(e) {\n                        item.click(e)\n                        menuPopup.hide()\n                        e.preventDefault()\n                        e.stopPropagation()\n                    }\n                }\n\n                return {object: $e, init: (item.init || undefined)}\n            })\n        }\n\n        return list\n    },\n\n    showColorPicker(track) {\n        return (\n            undefined === track.type ||\n            \"bedtype\" === track.type ||\n            \"alignment\" === track.type ||\n            \"annotation\" === track.type ||\n            \"variant\" === track.type ||\n            \"wig\" === track.type) ||\n            'interact' === track.type\n    },\n\n    createMenuItem(label, action) {\n        const object = $('<div>')\n        object.text(label)\n        return {object, click: action}\n    }\n}\n\n\nfunction visibilityWindowMenuItem(trackView) {\n\n    const click = e => {\n\n        const callback = () => {\n\n            let value = trackView.browser.inputDialog.value\n            value = '' === value || undefined === value ? -1 : value.trim()\n\n            trackView.track.visibilityWindow = Number.parseInt(value)\n            trackView.track.config.visibilityWindow = Number.parseInt(value)\n\n            trackView.updateViews()\n        }\n\n        const config =\n            {\n                label: 'Visibility Window',\n                value: (trackView.track.visibilityWindow),\n                callback\n            }\n        trackView.browser.inputDialog.present(config, e)\n\n    }\n\n    const object = $('<div>')\n    object.text('Set visibility window')\n    return {object, click}\n\n}\n\nfunction trackRemovalMenuItem(trackView) {\n\n    const object = $('<div>')\n    object.text('Remove track')\n\n    return {object, click: () => trackView.browser.removeTrack(trackView.track)}\n\n}\n\nfunction colorPickerMenuItem({trackView, label, option}) {\n\n    const $e = $('<div>')\n    $e.text(label)\n\n    return {\n        object: $e,\n        click: () => trackView.presentColorPicker(option)\n    }\n}\n\nfunction unsetColorMenuItem({trackView, label}) {\n\n    const $e = $('<div>')\n    $e.text(label)\n\n    return {\n        object: $e,\n        click: () => {\n            trackView.track.color = undefined\n            trackView.repaintViews()\n        }\n    }\n}\n\nfunction unsetAltColorMenuItem({trackView, label}) {\n\n    const $e = $('<div>')\n    $e.text(label)\n\n    return {\n        object: $e,\n        click: () => {\n            trackView.track.altColor = undefined\n            trackView.repaintViews()\n        }\n    }\n}\n\nfunction trackRenameMenuItem(trackView) {\n\n    const click = e => {\n\n        const callback = function () {\n            let value = trackView.browser.inputDialog.value\n            value = ('' === value || undefined === value) ? 'untitled' : value.trim()\n            trackView.track.name = value\n        }\n\n        const config =\n            {\n                label: 'Track Name',\n                value: (getTrackLabelText(trackView.track) || 'unnamed'),\n                callback\n            }\n\n        trackView.browser.inputDialog.present(config, e)\n\n    }\n\n    const object = $('<div>')\n    object.text('Set track name')\n    return {object, click}\n\n\n}\n\nfunction trackHeightMenuItem(trackView) {\n\n    const click = e => {\n\n        const callback = () => {\n\n            const number = Number(trackView.browser.inputDialog.value, 10)\n\n            if (undefined !== number) {\n\n                // If explicitly setting the height adust min or max, if neccessary.\n                if (trackView.track.minHeight !== undefined && trackView.track.minHeight > number) {\n                    trackView.track.minHeight = number\n                }\n                if (trackView.track.maxHeight !== undefined && trackView.track.maxHeight < number) {\n                    trackView.track.minHeight = number\n                }\n                trackView.setTrackHeight(number, true)\n\n                trackView.checkContentHeight()\n                trackView.repaintViews()\n\n\n                // Explicitly setting track height turns off autoHeight\n                trackView.track.autoHeight = false\n            }\n\n        }\n\n        const config =\n            {\n                label: 'Track Height',\n                value: trackView.track.height,\n                callback\n            }\n\n        trackView.browser.inputDialog.present(config, e)\n\n    }\n\n    const object = $('<div>')\n    object.text('Set track height')\n    return {object, click}\n\n\n}\n\nfunction getTrackLabelText(track) {\n    var vp,\n        txt\n\n    vp = track.trackView.viewports[0]\n    txt = vp.$trackLabel.text()\n\n    return txt\n}\n\nexport default MenuUtils\n","\nimport $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport {makeDraggable, UIUtils} from \"../../node_modules/igv-ui/dist/igv-ui.js\"\n\nclass DataRangeDialog {\n\n    constructor(browser, $parent, alert) {\n\n        this.browser = browser\n\n        // dialog container\n        this.$container = $(\"<div>\", {class: 'igv-generic-dialog-container'})\n        $parent.append(this.$container)\n        this.$container.offset({left: 0, top: 0})\n\n        // dialog header\n        const $header = $(\"<div>\", {class: 'igv-generic-dialog-header'})\n        this.$container.append($header)\n        UIUtils.attachDialogCloseHandlerWithParent($header[0], () => {\n            this.$minimum_input.val(undefined)\n            this.$maximum_input.val(undefined)\n            this.$container.offset({left: 0, top: 0})\n            this.$container.hide()\n        })\n\n\n        // minimun\n        this.$minimum = $(\"<div>\", {class: 'igv-generic-dialog-label-input'})\n        this.$container.append(this.$minimum)\n        const $mindiv = $('<div>')\n        $mindiv.text('Minimum')\n        this.$minimum.append($mindiv)\n        this.$minimum_input = $(\"<input>\")\n        this.$minimum.append(this.$minimum_input)\n\n\n        // maximum\n        this.$maximum = $(\"<div>\", {class: 'igv-generic-dialog-label-input'})\n        this.$container.append(this.$maximum)\n        const $maxdiv = $('<div>')\n        $maxdiv.text('Maximum')\n        this.$maximum.append($maxdiv)\n        this.$maximum_input = $(\"<input>\")\n        this.$maximum.append(this.$maximum_input)\n\n        // ok | cancel\n        const $buttons = $(\"<div>\", {class: 'igv-generic-dialog-ok-cancel'})\n        this.$container.append($buttons)\n\n        // ok\n        this.$ok = $(\"<div>\")\n        $buttons.append(this.$ok)\n        this.$ok.text('OK')\n\n        // cancel\n        this.$cancel = $(\"<div>\")\n        $buttons.append(this.$cancel)\n        this.$cancel.text('Cancel')\n\n        this.$cancel.on('click', () => {\n            this.$minimum_input.val(undefined)\n            this.$maximum_input.val(undefined)\n            this.$container.offset({left: 0, top: 0})\n            this.$container.hide()\n        })\n\n        //this.$container.draggable({ handle:$header.get(0) });\n        makeDraggable(this.$container.get(0), $header.get(0))\n\n        this.$container.hide()\n    }\n\n    configure(trackView) {\n\n        const dataRange = trackView.dataRange()\n        let min\n        let max\n        if (dataRange) {\n            min = dataRange.min\n            max = dataRange.max\n        } else {\n            min = 0\n            max = 100\n        }\n\n        this.$minimum_input.val(min)\n        this.$maximum_input.val(max)\n\n        this.$minimum_input.unbind()\n        this.$minimum_input.on('keyup', (e) => {\n            if (13 === e.keyCode) {\n                this.processResults(trackView)\n            }\n        })\n\n        this.$maximum_input.unbind()\n        this.$maximum_input.on('keyup', (e) => {\n            if (13 === e.keyCode) {\n                this.processResults(trackView)\n            }\n        })\n\n        this.$ok.unbind()\n        this.$ok.on('click', (e) => {\n            this.processResults(trackView)\n        })\n    }\n\n\n    processResults(trackView) {\n\n        const min = Number(this.$minimum_input.val())\n        const max = Number(this.$maximum_input.val())\n        if (isNaN(min) || isNaN(max)) {\n            this.browser.alert.present(new Error('Must input numeric values'), undefined)\n        } else {\n            trackView.setDataRange(min, max)\n        }\n\n        this.$minimum_input.val(undefined)\n        this.$maximum_input.val(undefined)\n        this.$container.offset({left: 0, top: 0})\n        this.$container.hide()\n    }\n\n    present($parent) {\n\n        const offset_top = $parent.offset().top\n        const scroll_top = $('body').scrollTop()\n\n        this.$container.offset({left: $parent.width() - this.$container.width(), top: (offset_top + scroll_top)})\n        this.$container.show()\n    }\n}\n\nexport default DataRangeDialog\n","\n/**\n * Covers string literals and String objects\n * @param x\n * @returns {boolean}\n */\nfunction isString(x) {\n    return typeof x === \"string\" || x instanceof String\n}\n\n\n// StackOverflow: http://stackoverflow.com/a/10810674/116169\nfunction numberFormatter(rawNumber) {\n\n    var dec = String(rawNumber).split(/[.,]/),\n        sep = ',',\n        decsep = '.';\n\n    return dec[0].split('').reverse().reduce(function (prev, now, i) {\n        return i % 3 === 0 ? prev + sep + now : prev + now;\n    }).split('').reverse().join('') + (dec[1] ? decsep + dec[1] : '');\n}\n\nconst numberUnFormatter = formatedNumber => formatedNumber.split(\",\").join().replace(\",\", \"\", \"g\");\n\nconst splitLines = function (string) {\n    return string.split(/\\n|\\r\\n|\\r/g);\n}\n\n\nfunction splitStringRespectingQuotes(string, delim) {\n\n    var tokens = [],\n        len = string.length,\n        i,\n        n = 0,\n        quote = false,\n        c;\n\n    if (len > 0) {\n\n        tokens[n] = string.charAt(0);\n        for (i = 1; i < len; i++) {\n            c = string.charAt(i);\n            if (c === '\"') {\n                quote = !quote;\n            } else if (!quote && c === delim) {\n                n++;\n                tokens[n] = \"\";\n            } else {\n                tokens[n] += c;\n            }\n        }\n    }\n    return tokens;\n}\n\nfunction stripQuotes(str) {\n    if(str === undefined) {\n        return str;\n    }\n    if(str.startsWith(\"'\") || str.startsWith('\"')) {\n        str = str.substring(1);\n    }\n    if (str.endsWith(\"'\") || str.endsWith('\"')) {\n        str = str.substring(0, str.length - 1);\n    }\n    return str;\n}\n\nfunction hashCode(s) {\n    return s.split(\"\").reduce(function (a, b) {\n        a = ((a << 5) - a) + b.charCodeAt(0);\n        return a & a\n    }, 0);\n}\n\nfunction capitalize(str) {\n    return str.length > 0 ? str.charAt(0).toUpperCase() + str.slice(1) : str;\n}\n\n\n/**\n * Parse a locus string and return a range object.  Locus string is of the form chr:start-end.  End is optional\n *\n */\nfunction parseLocusString(string) {\n\n    const t1 = string.split(\":\");\n    const t2 = t1[1].split(\"-\");\n\n    const range = {\n        chr: t1[0],\n        start: Number.parseInt(t2[0].replace(/,/g, '')) - 1\n    };\n\n    if (t2.length > 1) {\n        range.end = Number.parseInt(t2[1].replace(/,/g, ''));\n    } else {\n        range.end = range.start + 1;\n    }\n\n    return range;\n}\n\nexport {\n    isString, numberFormatter, numberUnFormatter, splitLines, splitStringRespectingQuotes, stripQuotes,\n    hashCode, capitalize, parseLocusString\n};","import {isString} from \"./stringUtils.js\"\n\nfunction getExtension(url) {\n\n    if (undefined === url) {\n        return undefined\n    }\n\n    let path = (isFilePath(url) || url.google_url) ? url.name : url\n    let filename = path.toLowerCase()\n\n    //Strip parameters -- handle local files later\n    let index = filename.indexOf(\"?\")\n    if (index > 0) {\n        filename = filename.substr(0, index)\n    }\n\n    //Strip aux extensions .gz, .tab, and .txt\n    if (filename.endsWith(\".gz\")) {\n        filename = filename.substr(0, filename.length - 3)\n    } else if (filename.endsWith(\".txt\") || filename.endsWith(\".tab\") || filename.endsWith(\".bgz\")) {\n        filename = filename.substr(0, filename.length - 4)\n    }\n\n    index = filename.lastIndexOf(\".\")\n\n    return index < 0 ? filename : filename.substr(1 + index)\n}\n\n/**\n * Return the filename from the path.   Example\n *   https://foo.com/bar.bed?param=2   => bar.bed\n * @param urlOrFile\n */\n\nfunction getFilename(urlOrFile) {\n\n    if (urlOrFile.name !== undefined) {\n        return urlOrFile.name\n    } else if (isString(urlOrFile)) {\n\n        let index = urlOrFile.lastIndexOf(\"/\")\n        let filename = index < 0 ? urlOrFile : urlOrFile.substr(index + 1)\n\n        //Strip parameters -- handle local files later\n        index = filename.indexOf(\"?\")\n        if (index > 0) {\n            filename = filename.substr(0, index)\n        }\n        return filename\n    } else {\n        throw Error(`Expected File or string, got ${typeof urlOrFile}`)\n    }\n}\n\n\n/**\n * Test if object is a File or File-like object.\n *\n * @param object\n */\nfunction isFile(object) {\n    if(!object) {\n        return false;\n    }\n    return typeof object !== 'function' &&\n        (object instanceof File ||\n            (object.hasOwnProperty(\"name\") && typeof object.slice === 'function' && typeof object.arrayBuffer === 'function'))\n}\n\nconst isFilePath = isFile    // deprecated\n\nfunction download(filename, data) {\n\n    const element = document.createElement('a')\n    element.setAttribute('href', data)\n    element.setAttribute('download', filename)\n    element.style.display = 'none'\n    document.body.appendChild(element)\n    element.click()\n    document.body.removeChild(element)\n}\n\nexport {getExtension, getFilename, isFilePath, isFile, download}\n","if (typeof process === 'object' && typeof window === 'undefined') {\n    global.atob = function (str) {\n        return Buffer.from(str, 'base64').toString('binary');\n    }\n}\n\n\nfunction parseUri(str) {\n\n    var o = options,\n        m = o.parser[o.strictMode ? \"strict\" : \"loose\"].exec(str),\n        uri = {},\n        i = 14;\n\n    while (i--) uri[o.key[i]] = m[i] || \"\";\n\n    uri[o.q.name] = {};\n    uri[o.key[12]].replace(o.q.parser, function ($0, $1, $2) {\n        if ($1) uri[o.q.name][$1] = $2;\n    });\n\n    return uri;\n}\n\nconst options = {\n    strictMode: false,\n    key: [\"source\", \"protocol\", \"authority\", \"userInfo\", \"user\", \"password\", \"host\", \"port\", \"relative\", \"path\", \"directory\", \"file\", \"query\", \"anchor\"],\n    q: {\n        name: \"queryKey\",\n        parser: /(?:^|&)([^&=]*)=?([^&]*)/g\n    },\n    parser: {\n        strict: /^(?:([^:\\/?#]+):)?(?:\\/\\/((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\\/?#]*)(?::(\\d*))?))?((((?:[^?#\\/]*\\/)*)([^?#]*))(?:\\?([^#]*))?(?:#(.*))?)/,\n        loose: /^(?:(?![^:@]+:[^:@\\/]*@)([^:\\/?#.]+):)?(?:\\/\\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\\/?#]*)(?::(\\d*))?)(((\\/(?:[^?#](?![^?#\\/]*\\.[^?#\\/.]+(?:[?#]|$)))*\\/?)?([^?#\\/]*))(?:\\?([^#]*))?(?:#(.*))?)/\n    }\n};\n\nfunction addExtension(url, extension) {\n\n    const idx = url.indexOf(\"?\");\n    if (idx < 0) {\n        return url + extension;\n    } else {\n        return url.substring(0, idx) + extension + url.substring(idx);\n    }\n}\n\n/**\n * Resolve a url, which might be a string, function (that returns a string or Promse), or Promise (that resolves to a string)\n *\n * @param url\n * @returns {Promise<*>}\n */\nasync function resolveURL(url) {\n    return (typeof url === 'function')  ?  url() :  url;\n}\n\nexport {parseUri, addExtension, resolveURL};\n\n","\n/*! pako 2.1.0 https://github.com/nodeca/pako @license (MIT AND Zlib) */\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\n/* eslint-disable space-unary-ops */\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\n\n//const Z_FILTERED          = 1;\n//const Z_HUFFMAN_ONLY      = 2;\n//const Z_RLE               = 3;\nconst Z_FIXED$1               = 4;\n//const Z_DEFAULT_STRATEGY  = 0;\n\n/* Possible values of the data_type field (though see inflate()) */\nconst Z_BINARY              = 0;\nconst Z_TEXT                = 1;\n//const Z_ASCII             = 1; // = Z_TEXT\nconst Z_UNKNOWN$1             = 2;\n\n/*============================================================================*/\n\n\nfunction zero$1(buf) { let len = buf.length; while (--len >= 0) { buf[len] = 0; } }\n\n// From zutil.h\n\nconst STORED_BLOCK = 0;\nconst STATIC_TREES = 1;\nconst DYN_TREES    = 2;\n/* The three kinds of block type */\n\nconst MIN_MATCH$1    = 3;\nconst MAX_MATCH$1    = 258;\n/* The minimum and maximum match lengths */\n\n// From deflate.h\n/* ===========================================================================\n * Internal compression state.\n */\n\nconst LENGTH_CODES$1  = 29;\n/* number of length codes, not counting the special END_BLOCK code */\n\nconst LITERALS$1      = 256;\n/* number of literal bytes 0..255 */\n\nconst L_CODES$1       = LITERALS$1 + 1 + LENGTH_CODES$1;\n/* number of Literal or Length codes, including the END_BLOCK code */\n\nconst D_CODES$1       = 30;\n/* number of distance codes */\n\nconst BL_CODES$1      = 19;\n/* number of codes used to transfer the bit lengths */\n\nconst HEAP_SIZE$1     = 2 * L_CODES$1 + 1;\n/* maximum heap size */\n\nconst MAX_BITS$1      = 15;\n/* All codes must not exceed MAX_BITS bits */\n\nconst Buf_size      = 16;\n/* size of bit buffer in bi_buf */\n\n\n/* ===========================================================================\n * Constants\n */\n\nconst MAX_BL_BITS = 7;\n/* Bit length codes must not exceed MAX_BL_BITS bits */\n\nconst END_BLOCK   = 256;\n/* end of block literal code */\n\nconst REP_3_6     = 16;\n/* repeat previous bit length 3-6 times (2 bits of repeat count) */\n\nconst REPZ_3_10   = 17;\n/* repeat a zero length 3-10 times  (3 bits of repeat count) */\n\nconst REPZ_11_138 = 18;\n/* repeat a zero length 11-138 times  (7 bits of repeat count) */\n\n/* eslint-disable comma-spacing,array-bracket-spacing */\nconst extra_lbits =   /* extra bits for each length code */\n  new Uint8Array([0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0]);\n\nconst extra_dbits =   /* extra bits for each distance code */\n  new Uint8Array([0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13]);\n\nconst extra_blbits =  /* extra bits for each bit length code */\n  new Uint8Array([0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7]);\n\nconst bl_order =\n  new Uint8Array([16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]);\n/* eslint-enable comma-spacing,array-bracket-spacing */\n\n/* The lengths of the bit length codes are sent in order of decreasing\n * probability, to avoid transmitting the lengths for unused bit length codes.\n */\n\n/* ===========================================================================\n * Local data. These are initialized only once.\n */\n\n// We pre-fill arrays with 0 to avoid uninitialized gaps\n\nconst DIST_CODE_LEN = 512; /* see definition of array dist_code below */\n\n// !!!! Use flat array instead of structure, Freq = i*2, Len = i*2+1\nconst static_ltree  = new Array((L_CODES$1 + 2) * 2);\nzero$1(static_ltree);\n/* The static literal tree. Since the bit lengths are imposed, there is no\n * need for the L_CODES extra codes used during heap construction. However\n * The codes 286 and 287 are needed to build a canonical tree (see _tr_init\n * below).\n */\n\nconst static_dtree  = new Array(D_CODES$1 * 2);\nzero$1(static_dtree);\n/* The static distance tree. (Actually a trivial tree since all codes use\n * 5 bits.)\n */\n\nconst _dist_code    = new Array(DIST_CODE_LEN);\nzero$1(_dist_code);\n/* Distance codes. The first 256 values correspond to the distances\n * 3 .. 258, the last 256 values correspond to the top 8 bits of\n * the 15 bit distances.\n */\n\nconst _length_code  = new Array(MAX_MATCH$1 - MIN_MATCH$1 + 1);\nzero$1(_length_code);\n/* length code for each normalized match length (0 == MIN_MATCH) */\n\nconst base_length   = new Array(LENGTH_CODES$1);\nzero$1(base_length);\n/* First normalized length for each code (0 = MIN_MATCH) */\n\nconst base_dist     = new Array(D_CODES$1);\nzero$1(base_dist);\n/* First normalized distance for each code (0 = distance of 1) */\n\n\nfunction StaticTreeDesc(static_tree, extra_bits, extra_base, elems, max_length) {\n\n  this.static_tree  = static_tree;  /* static tree or NULL */\n  this.extra_bits   = extra_bits;   /* extra bits for each code or NULL */\n  this.extra_base   = extra_base;   /* base index for extra_bits */\n  this.elems        = elems;        /* max number of elements in the tree */\n  this.max_length   = max_length;   /* max bit length for the codes */\n\n  // show if `static_tree` has data or dummy - needed for monomorphic objects\n  this.has_stree    = static_tree && static_tree.length;\n}\n\n\nlet static_l_desc;\nlet static_d_desc;\nlet static_bl_desc;\n\n\nfunction TreeDesc(dyn_tree, stat_desc) {\n  this.dyn_tree = dyn_tree;     /* the dynamic tree */\n  this.max_code = 0;            /* largest code with non zero frequency */\n  this.stat_desc = stat_desc;   /* the corresponding static tree */\n}\n\n\n\nconst d_code = (dist) => {\n\n  return dist < 256 ? _dist_code[dist] : _dist_code[256 + (dist >>> 7)];\n};\n\n\n/* ===========================================================================\n * Output a short LSB first on the stream.\n * IN assertion: there is enough room in pendingBuf.\n */\nconst put_short = (s, w) => {\n//    put_byte(s, (uch)((w) & 0xff));\n//    put_byte(s, (uch)((ush)(w) >> 8));\n  s.pending_buf[s.pending++] = (w) & 0xff;\n  s.pending_buf[s.pending++] = (w >>> 8) & 0xff;\n};\n\n\n/* ===========================================================================\n * Send a value on a given number of bits.\n * IN assertion: length <= 16 and value fits in length bits.\n */\nconst send_bits = (s, value, length) => {\n\n  if (s.bi_valid > (Buf_size - length)) {\n    s.bi_buf |= (value << s.bi_valid) & 0xffff;\n    put_short(s, s.bi_buf);\n    s.bi_buf = value >> (Buf_size - s.bi_valid);\n    s.bi_valid += length - Buf_size;\n  } else {\n    s.bi_buf |= (value << s.bi_valid) & 0xffff;\n    s.bi_valid += length;\n  }\n};\n\n\nconst send_code = (s, c, tree) => {\n\n  send_bits(s, tree[c * 2]/*.Code*/, tree[c * 2 + 1]/*.Len*/);\n};\n\n\n/* ===========================================================================\n * Reverse the first len bits of a code, using straightforward code (a faster\n * method would use a table)\n * IN assertion: 1 <= len <= 15\n */\nconst bi_reverse = (code, len) => {\n\n  let res = 0;\n  do {\n    res |= code & 1;\n    code >>>= 1;\n    res <<= 1;\n  } while (--len > 0);\n  return res >>> 1;\n};\n\n\n/* ===========================================================================\n * Flush the bit buffer, keeping at most 7 bits in it.\n */\nconst bi_flush = (s) => {\n\n  if (s.bi_valid === 16) {\n    put_short(s, s.bi_buf);\n    s.bi_buf = 0;\n    s.bi_valid = 0;\n\n  } else if (s.bi_valid >= 8) {\n    s.pending_buf[s.pending++] = s.bi_buf & 0xff;\n    s.bi_buf >>= 8;\n    s.bi_valid -= 8;\n  }\n};\n\n\n/* ===========================================================================\n * Compute the optimal bit lengths for a tree and update the total bit length\n * for the current block.\n * IN assertion: the fields freq and dad are set, heap[heap_max] and\n *    above are the tree nodes sorted by increasing frequency.\n * OUT assertions: the field len is set to the optimal bit length, the\n *     array bl_count contains the frequencies for each bit length.\n *     The length opt_len is updated; static_len is also updated if stree is\n *     not null.\n */\nconst gen_bitlen = (s, desc) => {\n//    deflate_state *s;\n//    tree_desc *desc;    /* the tree descriptor */\n\n  const tree            = desc.dyn_tree;\n  const max_code        = desc.max_code;\n  const stree           = desc.stat_desc.static_tree;\n  const has_stree       = desc.stat_desc.has_stree;\n  const extra           = desc.stat_desc.extra_bits;\n  const base            = desc.stat_desc.extra_base;\n  const max_length      = desc.stat_desc.max_length;\n  let h;              /* heap index */\n  let n, m;           /* iterate over the tree elements */\n  let bits;           /* bit length */\n  let xbits;          /* extra bits */\n  let f;              /* frequency */\n  let overflow = 0;   /* number of elements with bit length too large */\n\n  for (bits = 0; bits <= MAX_BITS$1; bits++) {\n    s.bl_count[bits] = 0;\n  }\n\n  /* In a first pass, compute the optimal bit lengths (which may\n   * overflow in the case of the bit length tree).\n   */\n  tree[s.heap[s.heap_max] * 2 + 1]/*.Len*/ = 0; /* root of the heap */\n\n  for (h = s.heap_max + 1; h < HEAP_SIZE$1; h++) {\n    n = s.heap[h];\n    bits = tree[tree[n * 2 + 1]/*.Dad*/ * 2 + 1]/*.Len*/ + 1;\n    if (bits > max_length) {\n      bits = max_length;\n      overflow++;\n    }\n    tree[n * 2 + 1]/*.Len*/ = bits;\n    /* We overwrite tree[n].Dad which is no longer needed */\n\n    if (n > max_code) { continue; } /* not a leaf node */\n\n    s.bl_count[bits]++;\n    xbits = 0;\n    if (n >= base) {\n      xbits = extra[n - base];\n    }\n    f = tree[n * 2]/*.Freq*/;\n    s.opt_len += f * (bits + xbits);\n    if (has_stree) {\n      s.static_len += f * (stree[n * 2 + 1]/*.Len*/ + xbits);\n    }\n  }\n  if (overflow === 0) { return; }\n\n  // Tracev((stderr,\"\\nbit length overflow\\n\"));\n  /* This happens for example on obj2 and pic of the Calgary corpus */\n\n  /* Find the first bit length which could increase: */\n  do {\n    bits = max_length - 1;\n    while (s.bl_count[bits] === 0) { bits--; }\n    s.bl_count[bits]--;      /* move one leaf down the tree */\n    s.bl_count[bits + 1] += 2; /* move one overflow item as its brother */\n    s.bl_count[max_length]--;\n    /* The brother of the overflow item also moves one step up,\n     * but this does not affect bl_count[max_length]\n     */\n    overflow -= 2;\n  } while (overflow > 0);\n\n  /* Now recompute all bit lengths, scanning in increasing frequency.\n   * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all\n   * lengths instead of fixing only the wrong ones. This idea is taken\n   * from 'ar' written by Haruhiko Okumura.)\n   */\n  for (bits = max_length; bits !== 0; bits--) {\n    n = s.bl_count[bits];\n    while (n !== 0) {\n      m = s.heap[--h];\n      if (m > max_code) { continue; }\n      if (tree[m * 2 + 1]/*.Len*/ !== bits) {\n        // Tracev((stderr,\"code %d bits %d->%d\\n\", m, tree[m].Len, bits));\n        s.opt_len += (bits - tree[m * 2 + 1]/*.Len*/) * tree[m * 2]/*.Freq*/;\n        tree[m * 2 + 1]/*.Len*/ = bits;\n      }\n      n--;\n    }\n  }\n};\n\n\n/* ===========================================================================\n * Generate the codes for a given tree and bit counts (which need not be\n * optimal).\n * IN assertion: the array bl_count contains the bit length statistics for\n * the given tree and the field len is set for all tree elements.\n * OUT assertion: the field code is set for all tree elements of non\n *     zero code length.\n */\nconst gen_codes = (tree, max_code, bl_count) => {\n//    ct_data *tree;             /* the tree to decorate */\n//    int max_code;              /* largest code with non zero frequency */\n//    ushf *bl_count;            /* number of codes at each bit length */\n\n  const next_code = new Array(MAX_BITS$1 + 1); /* next code value for each bit length */\n  let code = 0;              /* running code value */\n  let bits;                  /* bit index */\n  let n;                     /* code index */\n\n  /* The distribution counts are first used to generate the code values\n   * without bit reversal.\n   */\n  for (bits = 1; bits <= MAX_BITS$1; bits++) {\n    code = (code + bl_count[bits - 1]) << 1;\n    next_code[bits] = code;\n  }\n  /* Check that the bit counts in bl_count are consistent. The last code\n   * must be all ones.\n   */\n  //Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,\n  //        \"inconsistent bit counts\");\n  //Tracev((stderr,\"\\ngen_codes: max_code %d \", max_code));\n\n  for (n = 0;  n <= max_code; n++) {\n    let len = tree[n * 2 + 1]/*.Len*/;\n    if (len === 0) { continue; }\n    /* Now reverse the bits */\n    tree[n * 2]/*.Code*/ = bi_reverse(next_code[len]++, len);\n\n    //Tracecv(tree != static_ltree, (stderr,\"\\nn %3d %c l %2d c %4x (%x) \",\n    //     n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));\n  }\n};\n\n\n/* ===========================================================================\n * Initialize the various 'constant' tables.\n */\nconst tr_static_init = () => {\n\n  let n;        /* iterates over tree elements */\n  let bits;     /* bit counter */\n  let length;   /* length value */\n  let code;     /* code value */\n  let dist;     /* distance index */\n  const bl_count = new Array(MAX_BITS$1 + 1);\n  /* number of codes at each bit length for an optimal tree */\n\n  // do check in _tr_init()\n  //if (static_init_done) return;\n\n  /* For some embedded targets, global variables are not initialized: */\n/*#ifdef NO_INIT_GLOBAL_POINTERS\n  static_l_desc.static_tree = static_ltree;\n  static_l_desc.extra_bits = extra_lbits;\n  static_d_desc.static_tree = static_dtree;\n  static_d_desc.extra_bits = extra_dbits;\n  static_bl_desc.extra_bits = extra_blbits;\n#endif*/\n\n  /* Initialize the mapping length (0..255) -> length code (0..28) */\n  length = 0;\n  for (code = 0; code < LENGTH_CODES$1 - 1; code++) {\n    base_length[code] = length;\n    for (n = 0; n < (1 << extra_lbits[code]); n++) {\n      _length_code[length++] = code;\n    }\n  }\n  //Assert (length == 256, \"tr_static_init: length != 256\");\n  /* Note that the length 255 (match length 258) can be represented\n   * in two different ways: code 284 + 5 bits or code 285, so we\n   * overwrite length_code[255] to use the best encoding:\n   */\n  _length_code[length - 1] = code;\n\n  /* Initialize the mapping dist (0..32K) -> dist code (0..29) */\n  dist = 0;\n  for (code = 0; code < 16; code++) {\n    base_dist[code] = dist;\n    for (n = 0; n < (1 << extra_dbits[code]); n++) {\n      _dist_code[dist++] = code;\n    }\n  }\n  //Assert (dist == 256, \"tr_static_init: dist != 256\");\n  dist >>= 7; /* from now on, all distances are divided by 128 */\n  for (; code < D_CODES$1; code++) {\n    base_dist[code] = dist << 7;\n    for (n = 0; n < (1 << (extra_dbits[code] - 7)); n++) {\n      _dist_code[256 + dist++] = code;\n    }\n  }\n  //Assert (dist == 256, \"tr_static_init: 256+dist != 512\");\n\n  /* Construct the codes of the static literal tree */\n  for (bits = 0; bits <= MAX_BITS$1; bits++) {\n    bl_count[bits] = 0;\n  }\n\n  n = 0;\n  while (n <= 143) {\n    static_ltree[n * 2 + 1]/*.Len*/ = 8;\n    n++;\n    bl_count[8]++;\n  }\n  while (n <= 255) {\n    static_ltree[n * 2 + 1]/*.Len*/ = 9;\n    n++;\n    bl_count[9]++;\n  }\n  while (n <= 279) {\n    static_ltree[n * 2 + 1]/*.Len*/ = 7;\n    n++;\n    bl_count[7]++;\n  }\n  while (n <= 287) {\n    static_ltree[n * 2 + 1]/*.Len*/ = 8;\n    n++;\n    bl_count[8]++;\n  }\n  /* Codes 286 and 287 do not exist, but we must include them in the\n   * tree construction to get a canonical Huffman tree (longest code\n   * all ones)\n   */\n  gen_codes(static_ltree, L_CODES$1 + 1, bl_count);\n\n  /* The static distance tree is trivial: */\n  for (n = 0; n < D_CODES$1; n++) {\n    static_dtree[n * 2 + 1]/*.Len*/ = 5;\n    static_dtree[n * 2]/*.Code*/ = bi_reverse(n, 5);\n  }\n\n  // Now data ready and we can init static trees\n  static_l_desc = new StaticTreeDesc(static_ltree, extra_lbits, LITERALS$1 + 1, L_CODES$1, MAX_BITS$1);\n  static_d_desc = new StaticTreeDesc(static_dtree, extra_dbits, 0,          D_CODES$1, MAX_BITS$1);\n  static_bl_desc = new StaticTreeDesc(new Array(0), extra_blbits, 0,         BL_CODES$1, MAX_BL_BITS);\n\n  //static_init_done = true;\n};\n\n\n/* ===========================================================================\n * Initialize a new block.\n */\nconst init_block = (s) => {\n\n  let n; /* iterates over tree elements */\n\n  /* Initialize the trees. */\n  for (n = 0; n < L_CODES$1;  n++) { s.dyn_ltree[n * 2]/*.Freq*/ = 0; }\n  for (n = 0; n < D_CODES$1;  n++) { s.dyn_dtree[n * 2]/*.Freq*/ = 0; }\n  for (n = 0; n < BL_CODES$1; n++) { s.bl_tree[n * 2]/*.Freq*/ = 0; }\n\n  s.dyn_ltree[END_BLOCK * 2]/*.Freq*/ = 1;\n  s.opt_len = s.static_len = 0;\n  s.sym_next = s.matches = 0;\n};\n\n\n/* ===========================================================================\n * Flush the bit buffer and align the output on a byte boundary\n */\nconst bi_windup = (s) =>\n{\n  if (s.bi_valid > 8) {\n    put_short(s, s.bi_buf);\n  } else if (s.bi_valid > 0) {\n    //put_byte(s, (Byte)s->bi_buf);\n    s.pending_buf[s.pending++] = s.bi_buf;\n  }\n  s.bi_buf = 0;\n  s.bi_valid = 0;\n};\n\n/* ===========================================================================\n * Compares to subtrees, using the tree depth as tie breaker when\n * the subtrees have equal frequency. This minimizes the worst case length.\n */\nconst smaller = (tree, n, m, depth) => {\n\n  const _n2 = n * 2;\n  const _m2 = m * 2;\n  return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ ||\n         (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m]));\n};\n\n/* ===========================================================================\n * Restore the heap property by moving down the tree starting at node k,\n * exchanging a node with the smallest of its two sons if necessary, stopping\n * when the heap property is re-established (each father smaller than its\n * two sons).\n */\nconst pqdownheap = (s, tree, k) => {\n//    deflate_state *s;\n//    ct_data *tree;  /* the tree to restore */\n//    int k;               /* node to move down */\n\n  const v = s.heap[k];\n  let j = k << 1;  /* left son of k */\n  while (j <= s.heap_len) {\n    /* Set j to the smallest of the two sons: */\n    if (j < s.heap_len &&\n      smaller(tree, s.heap[j + 1], s.heap[j], s.depth)) {\n      j++;\n    }\n    /* Exit if v is smaller than both sons */\n    if (smaller(tree, v, s.heap[j], s.depth)) { break; }\n\n    /* Exchange v with the smallest son */\n    s.heap[k] = s.heap[j];\n    k = j;\n\n    /* And continue down the tree, setting j to the left son of k */\n    j <<= 1;\n  }\n  s.heap[k] = v;\n};\n\n\n// inlined manually\n// const SMALLEST = 1;\n\n/* ===========================================================================\n * Send the block data compressed using the given Huffman trees\n */\nconst compress_block = (s, ltree, dtree) => {\n//    deflate_state *s;\n//    const ct_data *ltree; /* literal tree */\n//    const ct_data *dtree; /* distance tree */\n\n  let dist;           /* distance of matched string */\n  let lc;             /* match length or unmatched char (if dist == 0) */\n  let sx = 0;         /* running index in sym_buf */\n  let code;           /* the code to send */\n  let extra;          /* number of extra bits to send */\n\n  if (s.sym_next !== 0) {\n    do {\n      dist = s.pending_buf[s.sym_buf + sx++] & 0xff;\n      dist += (s.pending_buf[s.sym_buf + sx++] & 0xff) << 8;\n      lc = s.pending_buf[s.sym_buf + sx++];\n      if (dist === 0) {\n        send_code(s, lc, ltree); /* send a literal byte */\n        //Tracecv(isgraph(lc), (stderr,\" '%c' \", lc));\n      } else {\n        /* Here, lc is the match length - MIN_MATCH */\n        code = _length_code[lc];\n        send_code(s, code + LITERALS$1 + 1, ltree); /* send the length code */\n        extra = extra_lbits[code];\n        if (extra !== 0) {\n          lc -= base_length[code];\n          send_bits(s, lc, extra);       /* send the extra length bits */\n        }\n        dist--; /* dist is now the match distance - 1 */\n        code = d_code(dist);\n        //Assert (code < D_CODES, \"bad d_code\");\n\n        send_code(s, code, dtree);       /* send the distance code */\n        extra = extra_dbits[code];\n        if (extra !== 0) {\n          dist -= base_dist[code];\n          send_bits(s, dist, extra);   /* send the extra distance bits */\n        }\n      } /* literal or match pair ? */\n\n      /* Check that the overlay between pending_buf and sym_buf is ok: */\n      //Assert(s->pending < s->lit_bufsize + sx, \"pendingBuf overflow\");\n\n    } while (sx < s.sym_next);\n  }\n\n  send_code(s, END_BLOCK, ltree);\n};\n\n\n/* ===========================================================================\n * Construct one Huffman tree and assigns the code bit strings and lengths.\n * Update the total bit length for the current block.\n * IN assertion: the field freq is set for all tree elements.\n * OUT assertions: the fields len and code are set to the optimal bit length\n *     and corresponding code. The length opt_len is updated; static_len is\n *     also updated if stree is not null. The field max_code is set.\n */\nconst build_tree = (s, desc) => {\n//    deflate_state *s;\n//    tree_desc *desc; /* the tree descriptor */\n\n  const tree     = desc.dyn_tree;\n  const stree    = desc.stat_desc.static_tree;\n  const has_stree = desc.stat_desc.has_stree;\n  const elems    = desc.stat_desc.elems;\n  let n, m;          /* iterate over heap elements */\n  let max_code = -1; /* largest code with non zero frequency */\n  let node;          /* new node being created */\n\n  /* Construct the initial heap, with least frequent element in\n   * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].\n   * heap[0] is not used.\n   */\n  s.heap_len = 0;\n  s.heap_max = HEAP_SIZE$1;\n\n  for (n = 0; n < elems; n++) {\n    if (tree[n * 2]/*.Freq*/ !== 0) {\n      s.heap[++s.heap_len] = max_code = n;\n      s.depth[n] = 0;\n\n    } else {\n      tree[n * 2 + 1]/*.Len*/ = 0;\n    }\n  }\n\n  /* The pkzip format requires that at least one distance code exists,\n   * and that at least one bit should be sent even if there is only one\n   * possible code. So to avoid special checks later on we force at least\n   * two codes of non zero frequency.\n   */\n  while (s.heap_len < 2) {\n    node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0);\n    tree[node * 2]/*.Freq*/ = 1;\n    s.depth[node] = 0;\n    s.opt_len--;\n\n    if (has_stree) {\n      s.static_len -= stree[node * 2 + 1]/*.Len*/;\n    }\n    /* node is 0 or 1 so it does not have extra bits */\n  }\n  desc.max_code = max_code;\n\n  /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,\n   * establish sub-heaps of increasing lengths:\n   */\n  for (n = (s.heap_len >> 1/*int /2*/); n >= 1; n--) { pqdownheap(s, tree, n); }\n\n  /* Construct the Huffman tree by repeatedly combining the least two\n   * frequent nodes.\n   */\n  node = elems;              /* next internal node of the tree */\n  do {\n    //pqremove(s, tree, n);  /* n = node of least frequency */\n    /*** pqremove ***/\n    n = s.heap[1/*SMALLEST*/];\n    s.heap[1/*SMALLEST*/] = s.heap[s.heap_len--];\n    pqdownheap(s, tree, 1/*SMALLEST*/);\n    /***/\n\n    m = s.heap[1/*SMALLEST*/]; /* m = node of next least frequency */\n\n    s.heap[--s.heap_max] = n; /* keep the nodes sorted by frequency */\n    s.heap[--s.heap_max] = m;\n\n    /* Create a new node father of n and m */\n    tree[node * 2]/*.Freq*/ = tree[n * 2]/*.Freq*/ + tree[m * 2]/*.Freq*/;\n    s.depth[node] = (s.depth[n] >= s.depth[m] ? s.depth[n] : s.depth[m]) + 1;\n    tree[n * 2 + 1]/*.Dad*/ = tree[m * 2 + 1]/*.Dad*/ = node;\n\n    /* and insert the new node in the heap */\n    s.heap[1/*SMALLEST*/] = node++;\n    pqdownheap(s, tree, 1/*SMALLEST*/);\n\n  } while (s.heap_len >= 2);\n\n  s.heap[--s.heap_max] = s.heap[1/*SMALLEST*/];\n\n  /* At this point, the fields freq and dad are set. We can now\n   * generate the bit lengths.\n   */\n  gen_bitlen(s, desc);\n\n  /* The field len is now set, we can generate the bit codes */\n  gen_codes(tree, max_code, s.bl_count);\n};\n\n\n/* ===========================================================================\n * Scan a literal or distance tree to determine the frequencies of the codes\n * in the bit length tree.\n */\nconst scan_tree = (s, tree, max_code) => {\n//    deflate_state *s;\n//    ct_data *tree;   /* the tree to be scanned */\n//    int max_code;    /* and its largest code of non zero frequency */\n\n  let n;                     /* iterates over all tree elements */\n  let prevlen = -1;          /* last emitted length */\n  let curlen;                /* length of current code */\n\n  let nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */\n\n  let count = 0;             /* repeat count of the current code */\n  let max_count = 7;         /* max repeat count */\n  let min_count = 4;         /* min repeat count */\n\n  if (nextlen === 0) {\n    max_count = 138;\n    min_count = 3;\n  }\n  tree[(max_code + 1) * 2 + 1]/*.Len*/ = 0xffff; /* guard */\n\n  for (n = 0; n <= max_code; n++) {\n    curlen = nextlen;\n    nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;\n\n    if (++count < max_count && curlen === nextlen) {\n      continue;\n\n    } else if (count < min_count) {\n      s.bl_tree[curlen * 2]/*.Freq*/ += count;\n\n    } else if (curlen !== 0) {\n\n      if (curlen !== prevlen) { s.bl_tree[curlen * 2]/*.Freq*/++; }\n      s.bl_tree[REP_3_6 * 2]/*.Freq*/++;\n\n    } else if (count <= 10) {\n      s.bl_tree[REPZ_3_10 * 2]/*.Freq*/++;\n\n    } else {\n      s.bl_tree[REPZ_11_138 * 2]/*.Freq*/++;\n    }\n\n    count = 0;\n    prevlen = curlen;\n\n    if (nextlen === 0) {\n      max_count = 138;\n      min_count = 3;\n\n    } else if (curlen === nextlen) {\n      max_count = 6;\n      min_count = 3;\n\n    } else {\n      max_count = 7;\n      min_count = 4;\n    }\n  }\n};\n\n\n/* ===========================================================================\n * Send a literal or distance tree in compressed form, using the codes in\n * bl_tree.\n */\nconst send_tree = (s, tree, max_code) => {\n//    deflate_state *s;\n//    ct_data *tree; /* the tree to be scanned */\n//    int max_code;       /* and its largest code of non zero frequency */\n\n  let n;                     /* iterates over all tree elements */\n  let prevlen = -1;          /* last emitted length */\n  let curlen;                /* length of current code */\n\n  let nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */\n\n  let count = 0;             /* repeat count of the current code */\n  let max_count = 7;         /* max repeat count */\n  let min_count = 4;         /* min repeat count */\n\n  /* tree[max_code+1].Len = -1; */  /* guard already set */\n  if (nextlen === 0) {\n    max_count = 138;\n    min_count = 3;\n  }\n\n  for (n = 0; n <= max_code; n++) {\n    curlen = nextlen;\n    nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;\n\n    if (++count < max_count && curlen === nextlen) {\n      continue;\n\n    } else if (count < min_count) {\n      do { send_code(s, curlen, s.bl_tree); } while (--count !== 0);\n\n    } else if (curlen !== 0) {\n      if (curlen !== prevlen) {\n        send_code(s, curlen, s.bl_tree);\n        count--;\n      }\n      //Assert(count >= 3 && count <= 6, \" 3_6?\");\n      send_code(s, REP_3_6, s.bl_tree);\n      send_bits(s, count - 3, 2);\n\n    } else if (count <= 10) {\n      send_code(s, REPZ_3_10, s.bl_tree);\n      send_bits(s, count - 3, 3);\n\n    } else {\n      send_code(s, REPZ_11_138, s.bl_tree);\n      send_bits(s, count - 11, 7);\n    }\n\n    count = 0;\n    prevlen = curlen;\n    if (nextlen === 0) {\n      max_count = 138;\n      min_count = 3;\n\n    } else if (curlen === nextlen) {\n      max_count = 6;\n      min_count = 3;\n\n    } else {\n      max_count = 7;\n      min_count = 4;\n    }\n  }\n};\n\n\n/* ===========================================================================\n * Construct the Huffman tree for the bit lengths and return the index in\n * bl_order of the last bit length code to send.\n */\nconst build_bl_tree = (s) => {\n\n  let max_blindex;  /* index of last bit length code of non zero freq */\n\n  /* Determine the bit length frequencies for literal and distance trees */\n  scan_tree(s, s.dyn_ltree, s.l_desc.max_code);\n  scan_tree(s, s.dyn_dtree, s.d_desc.max_code);\n\n  /* Build the bit length tree: */\n  build_tree(s, s.bl_desc);\n  /* opt_len now includes the length of the tree representations, except\n   * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.\n   */\n\n  /* Determine the number of bit length codes to send. The pkzip format\n   * requires that at least 4 bit length codes be sent. (appnote.txt says\n   * 3 but the actual value used is 4.)\n   */\n  for (max_blindex = BL_CODES$1 - 1; max_blindex >= 3; max_blindex--) {\n    if (s.bl_tree[bl_order[max_blindex] * 2 + 1]/*.Len*/ !== 0) {\n      break;\n    }\n  }\n  /* Update opt_len to include the bit length tree and counts */\n  s.opt_len += 3 * (max_blindex + 1) + 5 + 5 + 4;\n  //Tracev((stderr, \"\\ndyn trees: dyn %ld, stat %ld\",\n  //        s->opt_len, s->static_len));\n\n  return max_blindex;\n};\n\n\n/* ===========================================================================\n * Send the header for a block using dynamic Huffman trees: the counts, the\n * lengths of the bit length codes, the literal tree and the distance tree.\n * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.\n */\nconst send_all_trees = (s, lcodes, dcodes, blcodes) => {\n//    deflate_state *s;\n//    int lcodes, dcodes, blcodes; /* number of codes for each tree */\n\n  let rank;                    /* index in bl_order */\n\n  //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, \"not enough codes\");\n  //Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,\n  //        \"too many codes\");\n  //Tracev((stderr, \"\\nbl counts: \"));\n  send_bits(s, lcodes - 257, 5); /* not +255 as stated in appnote.txt */\n  send_bits(s, dcodes - 1,   5);\n  send_bits(s, blcodes - 4,  4); /* not -3 as stated in appnote.txt */\n  for (rank = 0; rank < blcodes; rank++) {\n    //Tracev((stderr, \"\\nbl code %2d \", bl_order[rank]));\n    send_bits(s, s.bl_tree[bl_order[rank] * 2 + 1]/*.Len*/, 3);\n  }\n  //Tracev((stderr, \"\\nbl tree: sent %ld\", s->bits_sent));\n\n  send_tree(s, s.dyn_ltree, lcodes - 1); /* literal tree */\n  //Tracev((stderr, \"\\nlit tree: sent %ld\", s->bits_sent));\n\n  send_tree(s, s.dyn_dtree, dcodes - 1); /* distance tree */\n  //Tracev((stderr, \"\\ndist tree: sent %ld\", s->bits_sent));\n};\n\n\n/* ===========================================================================\n * Check if the data type is TEXT or BINARY, using the following algorithm:\n * - TEXT if the two conditions below are satisfied:\n *    a) There are no non-portable control characters belonging to the\n *       \"block list\" (0..6, 14..25, 28..31).\n *    b) There is at least one printable character belonging to the\n *       \"allow list\" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).\n * - BINARY otherwise.\n * - The following partially-portable control characters form a\n *   \"gray list\" that is ignored in this detection algorithm:\n *   (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).\n * IN assertion: the fields Freq of dyn_ltree are set.\n */\nconst detect_data_type = (s) => {\n  /* block_mask is the bit mask of block-listed bytes\n   * set bits 0..6, 14..25, and 28..31\n   * 0xf3ffc07f = binary 11110011111111111100000001111111\n   */\n  let block_mask = 0xf3ffc07f;\n  let n;\n\n  /* Check for non-textual (\"block-listed\") bytes. */\n  for (n = 0; n <= 31; n++, block_mask >>>= 1) {\n    if ((block_mask & 1) && (s.dyn_ltree[n * 2]/*.Freq*/ !== 0)) {\n      return Z_BINARY;\n    }\n  }\n\n  /* Check for textual (\"allow-listed\") bytes. */\n  if (s.dyn_ltree[9 * 2]/*.Freq*/ !== 0 || s.dyn_ltree[10 * 2]/*.Freq*/ !== 0 ||\n      s.dyn_ltree[13 * 2]/*.Freq*/ !== 0) {\n    return Z_TEXT;\n  }\n  for (n = 32; n < LITERALS$1; n++) {\n    if (s.dyn_ltree[n * 2]/*.Freq*/ !== 0) {\n      return Z_TEXT;\n    }\n  }\n\n  /* There are no \"block-listed\" or \"allow-listed\" bytes:\n   * this stream either is empty or has tolerated (\"gray-listed\") bytes only.\n   */\n  return Z_BINARY;\n};\n\n\nlet static_init_done = false;\n\n/* ===========================================================================\n * Initialize the tree data structures for a new zlib stream.\n */\nconst _tr_init$1 = (s) =>\n{\n\n  if (!static_init_done) {\n    tr_static_init();\n    static_init_done = true;\n  }\n\n  s.l_desc  = new TreeDesc(s.dyn_ltree, static_l_desc);\n  s.d_desc  = new TreeDesc(s.dyn_dtree, static_d_desc);\n  s.bl_desc = new TreeDesc(s.bl_tree, static_bl_desc);\n\n  s.bi_buf = 0;\n  s.bi_valid = 0;\n\n  /* Initialize the first block of the first file: */\n  init_block(s);\n};\n\n\n/* ===========================================================================\n * Send a stored block\n */\nconst _tr_stored_block$1 = (s, buf, stored_len, last) => {\n//DeflateState *s;\n//charf *buf;       /* input block */\n//ulg stored_len;   /* length of input block */\n//int last;         /* one if this is the last block for a file */\n\n  send_bits(s, (STORED_BLOCK << 1) + (last ? 1 : 0), 3);    /* send block type */\n  bi_windup(s);        /* align on byte boundary */\n  put_short(s, stored_len);\n  put_short(s, ~stored_len);\n  if (stored_len) {\n    s.pending_buf.set(s.window.subarray(buf, buf + stored_len), s.pending);\n  }\n  s.pending += stored_len;\n};\n\n\n/* ===========================================================================\n * Send one empty static block to give enough lookahead for inflate.\n * This takes 10 bits, of which 7 may remain in the bit buffer.\n */\nconst _tr_align$1 = (s) => {\n  send_bits(s, STATIC_TREES << 1, 3);\n  send_code(s, END_BLOCK, static_ltree);\n  bi_flush(s);\n};\n\n\n/* ===========================================================================\n * Determine the best encoding for the current block: dynamic trees, static\n * trees or store, and write out the encoded block.\n */\nconst _tr_flush_block$1 = (s, buf, stored_len, last) => {\n//DeflateState *s;\n//charf *buf;       /* input block, or NULL if too old */\n//ulg stored_len;   /* length of input block */\n//int last;         /* one if this is the last block for a file */\n\n  let opt_lenb, static_lenb;  /* opt_len and static_len in bytes */\n  let max_blindex = 0;        /* index of last bit length code of non zero freq */\n\n  /* Build the Huffman trees unless a stored block is forced */\n  if (s.level > 0) {\n\n    /* Check if the file is binary or text */\n    if (s.strm.data_type === Z_UNKNOWN$1) {\n      s.strm.data_type = detect_data_type(s);\n    }\n\n    /* Construct the literal and distance trees */\n    build_tree(s, s.l_desc);\n    // Tracev((stderr, \"\\nlit data: dyn %ld, stat %ld\", s->opt_len,\n    //        s->static_len));\n\n    build_tree(s, s.d_desc);\n    // Tracev((stderr, \"\\ndist data: dyn %ld, stat %ld\", s->opt_len,\n    //        s->static_len));\n    /* At this point, opt_len and static_len are the total bit lengths of\n     * the compressed block data, excluding the tree representations.\n     */\n\n    /* Build the bit length tree for the above two trees, and get the index\n     * in bl_order of the last bit length code to send.\n     */\n    max_blindex = build_bl_tree(s);\n\n    /* Determine the best encoding. Compute the block lengths in bytes. */\n    opt_lenb = (s.opt_len + 3 + 7) >>> 3;\n    static_lenb = (s.static_len + 3 + 7) >>> 3;\n\n    // Tracev((stderr, \"\\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u \",\n    //        opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,\n    //        s->sym_next / 3));\n\n    if (static_lenb <= opt_lenb) { opt_lenb = static_lenb; }\n\n  } else {\n    // Assert(buf != (char*)0, \"lost buf\");\n    opt_lenb = static_lenb = stored_len + 5; /* force a stored block */\n  }\n\n  if ((stored_len + 4 <= opt_lenb) && (buf !== -1)) {\n    /* 4: two words for the lengths */\n\n    /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.\n     * Otherwise we can't have processed more than WSIZE input bytes since\n     * the last block flush, because compression would have been\n     * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to\n     * transform a block into a stored block.\n     */\n    _tr_stored_block$1(s, buf, stored_len, last);\n\n  } else if (s.strategy === Z_FIXED$1 || static_lenb === opt_lenb) {\n\n    send_bits(s, (STATIC_TREES << 1) + (last ? 1 : 0), 3);\n    compress_block(s, static_ltree, static_dtree);\n\n  } else {\n    send_bits(s, (DYN_TREES << 1) + (last ? 1 : 0), 3);\n    send_all_trees(s, s.l_desc.max_code + 1, s.d_desc.max_code + 1, max_blindex + 1);\n    compress_block(s, s.dyn_ltree, s.dyn_dtree);\n  }\n  // Assert (s->compressed_len == s->bits_sent, \"bad compressed size\");\n  /* The above check is made mod 2^32, for files larger than 512 MB\n   * and uLong implemented on 32 bits.\n   */\n  init_block(s);\n\n  if (last) {\n    bi_windup(s);\n  }\n  // Tracev((stderr,\"\\ncomprlen %lu(%lu) \", s->compressed_len>>3,\n  //       s->compressed_len-7*last));\n};\n\n/* ===========================================================================\n * Save the match info and tally the frequency counts. Return true if\n * the current block must be flushed.\n */\nconst _tr_tally$1 = (s, dist, lc) => {\n//    deflate_state *s;\n//    unsigned dist;  /* distance of matched string */\n//    unsigned lc;    /* match length-MIN_MATCH or unmatched char (if dist==0) */\n\n  s.pending_buf[s.sym_buf + s.sym_next++] = dist;\n  s.pending_buf[s.sym_buf + s.sym_next++] = dist >> 8;\n  s.pending_buf[s.sym_buf + s.sym_next++] = lc;\n  if (dist === 0) {\n    /* lc is the unmatched char */\n    s.dyn_ltree[lc * 2]/*.Freq*/++;\n  } else {\n    s.matches++;\n    /* Here, lc is the match length - MIN_MATCH */\n    dist--;             /* dist = match distance - 1 */\n    //Assert((ush)dist < (ush)MAX_DIST(s) &&\n    //       (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&\n    //       (ush)d_code(dist) < (ush)D_CODES,  \"_tr_tally: bad match\");\n\n    s.dyn_ltree[(_length_code[lc] + LITERALS$1 + 1) * 2]/*.Freq*/++;\n    s.dyn_dtree[d_code(dist) * 2]/*.Freq*/++;\n  }\n\n  return (s.sym_next === s.sym_end);\n};\n\nvar _tr_init_1  = _tr_init$1;\nvar _tr_stored_block_1 = _tr_stored_block$1;\nvar _tr_flush_block_1  = _tr_flush_block$1;\nvar _tr_tally_1 = _tr_tally$1;\nvar _tr_align_1 = _tr_align$1;\n\nvar trees = {\n\t_tr_init: _tr_init_1,\n\t_tr_stored_block: _tr_stored_block_1,\n\t_tr_flush_block: _tr_flush_block_1,\n\t_tr_tally: _tr_tally_1,\n\t_tr_align: _tr_align_1\n};\n\n// Note: adler32 takes 12% for level 0 and 2% for level 6.\n// It isn't worth it to make additional optimizations as in original.\n// Small size is preferable.\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nconst adler32 = (adler, buf, len, pos) => {\n  let s1 = (adler & 0xffff) |0,\n      s2 = ((adler >>> 16) & 0xffff) |0,\n      n = 0;\n\n  while (len !== 0) {\n    // Set limit ~ twice less than 5552, to keep\n    // s2 in 31-bits, because we force signed ints.\n    // in other case %= will fail.\n    n = len > 2000 ? 2000 : len;\n    len -= n;\n\n    do {\n      s1 = (s1 + buf[pos++]) |0;\n      s2 = (s2 + s1) |0;\n    } while (--n);\n\n    s1 %= 65521;\n    s2 %= 65521;\n  }\n\n  return (s1 | (s2 << 16)) |0;\n};\n\n\nvar adler32_1 = adler32;\n\n// Note: we can't get significant speed boost here.\n// So write code to minimize size - no pregenerated tables\n// and array tools dependencies.\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\n// Use ordinary array, since untyped makes no boost here\nconst makeTable = () => {\n  let c, table = [];\n\n  for (var n = 0; n < 256; n++) {\n    c = n;\n    for (var k = 0; k < 8; k++) {\n      c = ((c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));\n    }\n    table[n] = c;\n  }\n\n  return table;\n};\n\n// Create table on load. Just 255 signed longs. Not a problem.\nconst crcTable = new Uint32Array(makeTable());\n\n\nconst crc32 = (crc, buf, len, pos) => {\n  const t = crcTable;\n  const end = pos + len;\n\n  crc ^= -1;\n\n  for (let i = pos; i < end; i++) {\n    crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];\n  }\n\n  return (crc ^ (-1)); // >>> 0;\n};\n\n\nvar crc32_1 = crc32;\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nvar messages = {\n  2:      'need dictionary',     /* Z_NEED_DICT       2  */\n  1:      'stream end',          /* Z_STREAM_END      1  */\n  0:      '',                    /* Z_OK              0  */\n  '-1':   'file error',          /* Z_ERRNO         (-1) */\n  '-2':   'stream error',        /* Z_STREAM_ERROR  (-2) */\n  '-3':   'data error',          /* Z_DATA_ERROR    (-3) */\n  '-4':   'insufficient memory', /* Z_MEM_ERROR     (-4) */\n  '-5':   'buffer error',        /* Z_BUF_ERROR     (-5) */\n  '-6':   'incompatible version' /* Z_VERSION_ERROR (-6) */\n};\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nvar constants$2 = {\n\n  /* Allowed flush values; see deflate() and inflate() below for details */\n  Z_NO_FLUSH:         0,\n  Z_PARTIAL_FLUSH:    1,\n  Z_SYNC_FLUSH:       2,\n  Z_FULL_FLUSH:       3,\n  Z_FINISH:           4,\n  Z_BLOCK:            5,\n  Z_TREES:            6,\n\n  /* Return codes for the compression/decompression functions. Negative values\n  * are errors, positive values are used for special but normal events.\n  */\n  Z_OK:               0,\n  Z_STREAM_END:       1,\n  Z_NEED_DICT:        2,\n  Z_ERRNO:           -1,\n  Z_STREAM_ERROR:    -2,\n  Z_DATA_ERROR:      -3,\n  Z_MEM_ERROR:       -4,\n  Z_BUF_ERROR:       -5,\n  //Z_VERSION_ERROR: -6,\n\n  /* compression levels */\n  Z_NO_COMPRESSION:         0,\n  Z_BEST_SPEED:             1,\n  Z_BEST_COMPRESSION:       9,\n  Z_DEFAULT_COMPRESSION:   -1,\n\n\n  Z_FILTERED:               1,\n  Z_HUFFMAN_ONLY:           2,\n  Z_RLE:                    3,\n  Z_FIXED:                  4,\n  Z_DEFAULT_STRATEGY:       0,\n\n  /* Possible values of the data_type field (though see inflate()) */\n  Z_BINARY:                 0,\n  Z_TEXT:                   1,\n  //Z_ASCII:                1, // = Z_TEXT (deprecated)\n  Z_UNKNOWN:                2,\n\n  /* The deflate compression method */\n  Z_DEFLATED:               8\n  //Z_NULL:                 null // Use -1 or null inline, depending on var type\n};\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nconst { _tr_init, _tr_stored_block, _tr_flush_block, _tr_tally, _tr_align } = trees;\n\n\n\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\nconst {\n  Z_NO_FLUSH: Z_NO_FLUSH$2, Z_PARTIAL_FLUSH, Z_FULL_FLUSH: Z_FULL_FLUSH$1, Z_FINISH: Z_FINISH$3, Z_BLOCK: Z_BLOCK$1,\n  Z_OK: Z_OK$3, Z_STREAM_END: Z_STREAM_END$3, Z_STREAM_ERROR: Z_STREAM_ERROR$2, Z_DATA_ERROR: Z_DATA_ERROR$2, Z_BUF_ERROR: Z_BUF_ERROR$1,\n  Z_DEFAULT_COMPRESSION: Z_DEFAULT_COMPRESSION$1,\n  Z_FILTERED, Z_HUFFMAN_ONLY, Z_RLE, Z_FIXED, Z_DEFAULT_STRATEGY: Z_DEFAULT_STRATEGY$1,\n  Z_UNKNOWN,\n  Z_DEFLATED: Z_DEFLATED$2\n} = constants$2;\n\n/*============================================================================*/\n\n\nconst MAX_MEM_LEVEL = 9;\n/* Maximum value for memLevel in deflateInit2 */\nconst MAX_WBITS$1 = 15;\n/* 32K LZ77 window */\nconst DEF_MEM_LEVEL = 8;\n\n\nconst LENGTH_CODES  = 29;\n/* number of length codes, not counting the special END_BLOCK code */\nconst LITERALS      = 256;\n/* number of literal bytes 0..255 */\nconst L_CODES       = LITERALS + 1 + LENGTH_CODES;\n/* number of Literal or Length codes, including the END_BLOCK code */\nconst D_CODES       = 30;\n/* number of distance codes */\nconst BL_CODES      = 19;\n/* number of codes used to transfer the bit lengths */\nconst HEAP_SIZE     = 2 * L_CODES + 1;\n/* maximum heap size */\nconst MAX_BITS  = 15;\n/* All codes must not exceed MAX_BITS bits */\n\nconst MIN_MATCH = 3;\nconst MAX_MATCH = 258;\nconst MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1);\n\nconst PRESET_DICT = 0x20;\n\nconst INIT_STATE    =  42;    /* zlib header -> BUSY_STATE */\n//#ifdef GZIP\nconst GZIP_STATE    =  57;    /* gzip header -> BUSY_STATE | EXTRA_STATE */\n//#endif\nconst EXTRA_STATE   =  69;    /* gzip extra block -> NAME_STATE */\nconst NAME_STATE    =  73;    /* gzip file name -> COMMENT_STATE */\nconst COMMENT_STATE =  91;    /* gzip comment -> HCRC_STATE */\nconst HCRC_STATE    = 103;    /* gzip header CRC -> BUSY_STATE */\nconst BUSY_STATE    = 113;    /* deflate -> FINISH_STATE */\nconst FINISH_STATE  = 666;    /* stream complete */\n\nconst BS_NEED_MORE      = 1; /* block not completed, need more input or more output */\nconst BS_BLOCK_DONE     = 2; /* block flush performed */\nconst BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */\nconst BS_FINISH_DONE    = 4; /* finish done, accept no more input or output */\n\nconst OS_CODE = 0x03; // Unix :) . Don't detect, use this default.\n\nconst err = (strm, errorCode) => {\n  strm.msg = messages[errorCode];\n  return errorCode;\n};\n\nconst rank = (f) => {\n  return ((f) * 2) - ((f) > 4 ? 9 : 0);\n};\n\nconst zero = (buf) => {\n  let len = buf.length; while (--len >= 0) { buf[len] = 0; }\n};\n\n/* ===========================================================================\n * Slide the hash table when sliding the window down (could be avoided with 32\n * bit values at the expense of memory usage). We slide even when level == 0 to\n * keep the hash table consistent if we switch back to level > 0 later.\n */\nconst slide_hash = (s) => {\n  let n, m;\n  let p;\n  let wsize = s.w_size;\n\n  n = s.hash_size;\n  p = n;\n  do {\n    m = s.head[--p];\n    s.head[p] = (m >= wsize ? m - wsize : 0);\n  } while (--n);\n  n = wsize;\n//#ifndef FASTEST\n  p = n;\n  do {\n    m = s.prev[--p];\n    s.prev[p] = (m >= wsize ? m - wsize : 0);\n    /* If n is not on any hash chain, prev[n] is garbage but\n     * its value will never be used.\n     */\n  } while (--n);\n//#endif\n};\n\n/* eslint-disable new-cap */\nlet HASH_ZLIB = (s, prev, data) => ((prev << s.hash_shift) ^ data) & s.hash_mask;\n// This hash causes less collisions, https://github.com/nodeca/pako/issues/135\n// But breaks binary compatibility\n//let HASH_FAST = (s, prev, data) => ((prev << 8) + (prev >> 8) + (data << 4)) & s.hash_mask;\nlet HASH = HASH_ZLIB;\n\n\n/* =========================================================================\n * Flush as much pending output as possible. All deflate() output, except for\n * some deflate_stored() output, goes through this function so some\n * applications may wish to modify it to avoid allocating a large\n * strm->next_out buffer and copying into it. (See also read_buf()).\n */\nconst flush_pending = (strm) => {\n  const s = strm.state;\n\n  //_tr_flush_bits(s);\n  let len = s.pending;\n  if (len > strm.avail_out) {\n    len = strm.avail_out;\n  }\n  if (len === 0) { return; }\n\n  strm.output.set(s.pending_buf.subarray(s.pending_out, s.pending_out + len), strm.next_out);\n  strm.next_out  += len;\n  s.pending_out  += len;\n  strm.total_out += len;\n  strm.avail_out -= len;\n  s.pending      -= len;\n  if (s.pending === 0) {\n    s.pending_out = 0;\n  }\n};\n\n\nconst flush_block_only = (s, last) => {\n  _tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last);\n  s.block_start = s.strstart;\n  flush_pending(s.strm);\n};\n\n\nconst put_byte = (s, b) => {\n  s.pending_buf[s.pending++] = b;\n};\n\n\n/* =========================================================================\n * Put a short in the pending buffer. The 16-bit value is put in MSB order.\n * IN assertion: the stream state is correct and there is enough room in\n * pending_buf.\n */\nconst putShortMSB = (s, b) => {\n\n  //  put_byte(s, (Byte)(b >> 8));\n//  put_byte(s, (Byte)(b & 0xff));\n  s.pending_buf[s.pending++] = (b >>> 8) & 0xff;\n  s.pending_buf[s.pending++] = b & 0xff;\n};\n\n\n/* ===========================================================================\n * Read a new buffer from the current input stream, update the adler32\n * and total number of bytes read.  All deflate() input goes through\n * this function so some applications may wish to modify it to avoid\n * allocating a large strm->input buffer and copying from it.\n * (See also flush_pending()).\n */\nconst read_buf = (strm, buf, start, size) => {\n\n  let len = strm.avail_in;\n\n  if (len > size) { len = size; }\n  if (len === 0) { return 0; }\n\n  strm.avail_in -= len;\n\n  // zmemcpy(buf, strm->next_in, len);\n  buf.set(strm.input.subarray(strm.next_in, strm.next_in + len), start);\n  if (strm.state.wrap === 1) {\n    strm.adler = adler32_1(strm.adler, buf, len, start);\n  }\n\n  else if (strm.state.wrap === 2) {\n    strm.adler = crc32_1(strm.adler, buf, len, start);\n  }\n\n  strm.next_in += len;\n  strm.total_in += len;\n\n  return len;\n};\n\n\n/* ===========================================================================\n * Set match_start to the longest match starting at the given string and\n * return its length. Matches shorter or equal to prev_length are discarded,\n * in which case the result is equal to prev_length and match_start is\n * garbage.\n * IN assertions: cur_match is the head of the hash chain for the current\n *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1\n * OUT assertion: the match length is not greater than s->lookahead.\n */\nconst longest_match = (s, cur_match) => {\n\n  let chain_length = s.max_chain_length;      /* max hash chain length */\n  let scan = s.strstart; /* current string */\n  let match;                       /* matched string */\n  let len;                           /* length of current match */\n  let best_len = s.prev_length;              /* best match length so far */\n  let nice_match = s.nice_match;             /* stop if match long enough */\n  const limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ?\n      s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/;\n\n  const _win = s.window; // shortcut\n\n  const wmask = s.w_mask;\n  const prev  = s.prev;\n\n  /* Stop when cur_match becomes <= limit. To simplify the code,\n   * we prevent matches with the string of window index 0.\n   */\n\n  const strend = s.strstart + MAX_MATCH;\n  let scan_end1  = _win[scan + best_len - 1];\n  let scan_end   = _win[scan + best_len];\n\n  /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.\n   * It is easy to get rid of this optimization if necessary.\n   */\n  // Assert(s->hash_bits >= 8 && MAX_MATCH == 258, \"Code too clever\");\n\n  /* Do not waste too much time if we already have a good match: */\n  if (s.prev_length >= s.good_match) {\n    chain_length >>= 2;\n  }\n  /* Do not look for matches beyond the end of the input. This is necessary\n   * to make deflate deterministic.\n   */\n  if (nice_match > s.lookahead) { nice_match = s.lookahead; }\n\n  // Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, \"need lookahead\");\n\n  do {\n    // Assert(cur_match < s->strstart, \"no future\");\n    match = cur_match;\n\n    /* Skip to next match if the match length cannot increase\n     * or if the match length is less than 2.  Note that the checks below\n     * for insufficient lookahead only occur occasionally for performance\n     * reasons.  Therefore uninitialized memory will be accessed, and\n     * conditional jumps will be made that depend on those values.\n     * However the length of the match is limited to the lookahead, so\n     * the output of deflate is not affected by the uninitialized values.\n     */\n\n    if (_win[match + best_len]     !== scan_end  ||\n        _win[match + best_len - 1] !== scan_end1 ||\n        _win[match]                !== _win[scan] ||\n        _win[++match]              !== _win[scan + 1]) {\n      continue;\n    }\n\n    /* The check at best_len-1 can be removed because it will be made\n     * again later. (This heuristic is not always a win.)\n     * It is not necessary to compare scan[2] and match[2] since they\n     * are always equal when the other bytes match, given that\n     * the hash keys are equal and that HASH_BITS >= 8.\n     */\n    scan += 2;\n    match++;\n    // Assert(*scan == *match, \"match[2]?\");\n\n    /* We check for insufficient lookahead only every 8th comparison;\n     * the 256th check will be made at strstart+258.\n     */\n    do {\n      /*jshint noempty:false*/\n    } while (_win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&\n             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&\n             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&\n             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&\n             scan < strend);\n\n    // Assert(scan <= s->window+(unsigned)(s->window_size-1), \"wild scan\");\n\n    len = MAX_MATCH - (strend - scan);\n    scan = strend - MAX_MATCH;\n\n    if (len > best_len) {\n      s.match_start = cur_match;\n      best_len = len;\n      if (len >= nice_match) {\n        break;\n      }\n      scan_end1  = _win[scan + best_len - 1];\n      scan_end   = _win[scan + best_len];\n    }\n  } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length !== 0);\n\n  if (best_len <= s.lookahead) {\n    return best_len;\n  }\n  return s.lookahead;\n};\n\n\n/* ===========================================================================\n * Fill the window when the lookahead becomes insufficient.\n * Updates strstart and lookahead.\n *\n * IN assertion: lookahead < MIN_LOOKAHEAD\n * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD\n *    At least one byte has been read, or avail_in == 0; reads are\n *    performed for at least two bytes (required for the zip translate_eol\n *    option -- not supported here).\n */\nconst fill_window = (s) => {\n\n  const _w_size = s.w_size;\n  let n, more, str;\n\n  //Assert(s->lookahead < MIN_LOOKAHEAD, \"already enough lookahead\");\n\n  do {\n    more = s.window_size - s.lookahead - s.strstart;\n\n    // JS ints have 32 bit, block below not needed\n    /* Deal with !@#$% 64K limit: */\n    //if (sizeof(int) <= 2) {\n    //    if (more == 0 && s->strstart == 0 && s->lookahead == 0) {\n    //        more = wsize;\n    //\n    //  } else if (more == (unsigned)(-1)) {\n    //        /* Very unlikely, but possible on 16 bit machine if\n    //         * strstart == 0 && lookahead == 1 (input done a byte at time)\n    //         */\n    //        more--;\n    //    }\n    //}\n\n\n    /* If the window is almost full and there is insufficient lookahead,\n     * move the upper half to the lower one to make room in the upper half.\n     */\n    if (s.strstart >= _w_size + (_w_size - MIN_LOOKAHEAD)) {\n\n      s.window.set(s.window.subarray(_w_size, _w_size + _w_size - more), 0);\n      s.match_start -= _w_size;\n      s.strstart -= _w_size;\n      /* we now have strstart >= MAX_DIST */\n      s.block_start -= _w_size;\n      if (s.insert > s.strstart) {\n        s.insert = s.strstart;\n      }\n      slide_hash(s);\n      more += _w_size;\n    }\n    if (s.strm.avail_in === 0) {\n      break;\n    }\n\n    /* If there was no sliding:\n     *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&\n     *    more == window_size - lookahead - strstart\n     * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)\n     * => more >= window_size - 2*WSIZE + 2\n     * In the BIG_MEM or MMAP case (not yet supported),\n     *   window_size == input_size + MIN_LOOKAHEAD  &&\n     *   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.\n     * Otherwise, window_size == 2*WSIZE so more >= 2.\n     * If there was sliding, more >= WSIZE. So in all cases, more >= 2.\n     */\n    //Assert(more >= 2, \"more < 2\");\n    n = read_buf(s.strm, s.window, s.strstart + s.lookahead, more);\n    s.lookahead += n;\n\n    /* Initialize the hash value now that we have some input: */\n    if (s.lookahead + s.insert >= MIN_MATCH) {\n      str = s.strstart - s.insert;\n      s.ins_h = s.window[str];\n\n      /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */\n      s.ins_h = HASH(s, s.ins_h, s.window[str + 1]);\n//#if MIN_MATCH != 3\n//        Call update_hash() MIN_MATCH-3 more times\n//#endif\n      while (s.insert) {\n        /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */\n        s.ins_h = HASH(s, s.ins_h, s.window[str + MIN_MATCH - 1]);\n\n        s.prev[str & s.w_mask] = s.head[s.ins_h];\n        s.head[s.ins_h] = str;\n        str++;\n        s.insert--;\n        if (s.lookahead + s.insert < MIN_MATCH) {\n          break;\n        }\n      }\n    }\n    /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,\n     * but this is not important since only literal bytes will be emitted.\n     */\n\n  } while (s.lookahead < MIN_LOOKAHEAD && s.strm.avail_in !== 0);\n\n  /* If the WIN_INIT bytes after the end of the current data have never been\n   * written, then zero those bytes in order to avoid memory check reports of\n   * the use of uninitialized (or uninitialised as Julian writes) bytes by\n   * the longest match routines.  Update the high water mark for the next\n   * time through here.  WIN_INIT is set to MAX_MATCH since the longest match\n   * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.\n   */\n//  if (s.high_water < s.window_size) {\n//    const curr = s.strstart + s.lookahead;\n//    let init = 0;\n//\n//    if (s.high_water < curr) {\n//      /* Previous high water mark below current data -- zero WIN_INIT\n//       * bytes or up to end of window, whichever is less.\n//       */\n//      init = s.window_size - curr;\n//      if (init > WIN_INIT)\n//        init = WIN_INIT;\n//      zmemzero(s->window + curr, (unsigned)init);\n//      s->high_water = curr + init;\n//    }\n//    else if (s->high_water < (ulg)curr + WIN_INIT) {\n//      /* High water mark at or above current data, but below current data\n//       * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up\n//       * to end of window, whichever is less.\n//       */\n//      init = (ulg)curr + WIN_INIT - s->high_water;\n//      if (init > s->window_size - s->high_water)\n//        init = s->window_size - s->high_water;\n//      zmemzero(s->window + s->high_water, (unsigned)init);\n//      s->high_water += init;\n//    }\n//  }\n//\n//  Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,\n//    \"not enough room for search\");\n};\n\n/* ===========================================================================\n * Copy without compression as much as possible from the input stream, return\n * the current block state.\n *\n * In case deflateParams() is used to later switch to a non-zero compression\n * level, s->matches (otherwise unused when storing) keeps track of the number\n * of hash table slides to perform. If s->matches is 1, then one hash table\n * slide will be done when switching. If s->matches is 2, the maximum value\n * allowed here, then the hash table will be cleared, since two or more slides\n * is the same as a clear.\n *\n * deflate_stored() is written to minimize the number of times an input byte is\n * copied. It is most efficient with large input and output buffers, which\n * maximizes the opportunites to have a single copy from next_in to next_out.\n */\nconst deflate_stored = (s, flush) => {\n\n  /* Smallest worthy block size when not flushing or finishing. By default\n   * this is 32K. This can be as small as 507 bytes for memLevel == 1. For\n   * large input and output buffers, the stored block size will be larger.\n   */\n  let min_block = s.pending_buf_size - 5 > s.w_size ? s.w_size : s.pending_buf_size - 5;\n\n  /* Copy as many min_block or larger stored blocks directly to next_out as\n   * possible. If flushing, copy the remaining available input to next_out as\n   * stored blocks, if there is enough space.\n   */\n  let len, left, have, last = 0;\n  let used = s.strm.avail_in;\n  do {\n    /* Set len to the maximum size block that we can copy directly with the\n     * available input data and output space. Set left to how much of that\n     * would be copied from what's left in the window.\n     */\n    len = 65535/* MAX_STORED */;     /* maximum deflate stored block length */\n    have = (s.bi_valid + 42) >> 3;     /* number of header bytes */\n    if (s.strm.avail_out < have) {         /* need room for header */\n      break;\n    }\n      /* maximum stored block length that will fit in avail_out: */\n    have = s.strm.avail_out - have;\n    left = s.strstart - s.block_start;  /* bytes left in window */\n    if (len > left + s.strm.avail_in) {\n      len = left + s.strm.avail_in;   /* limit len to the input */\n    }\n    if (len > have) {\n      len = have;             /* limit len to the output */\n    }\n\n    /* If the stored block would be less than min_block in length, or if\n     * unable to copy all of the available input when flushing, then try\n     * copying to the window and the pending buffer instead. Also don't\n     * write an empty block when flushing -- deflate() does that.\n     */\n    if (len < min_block && ((len === 0 && flush !== Z_FINISH$3) ||\n                        flush === Z_NO_FLUSH$2 ||\n                        len !== left + s.strm.avail_in)) {\n      break;\n    }\n\n    /* Make a dummy stored block in pending to get the header bytes,\n     * including any pending bits. This also updates the debugging counts.\n     */\n    last = flush === Z_FINISH$3 && len === left + s.strm.avail_in ? 1 : 0;\n    _tr_stored_block(s, 0, 0, last);\n\n    /* Replace the lengths in the dummy stored block with len. */\n    s.pending_buf[s.pending - 4] = len;\n    s.pending_buf[s.pending - 3] = len >> 8;\n    s.pending_buf[s.pending - 2] = ~len;\n    s.pending_buf[s.pending - 1] = ~len >> 8;\n\n    /* Write the stored block header bytes. */\n    flush_pending(s.strm);\n\n//#ifdef ZLIB_DEBUG\n//    /* Update debugging counts for the data about to be copied. */\n//    s->compressed_len += len << 3;\n//    s->bits_sent += len << 3;\n//#endif\n\n    /* Copy uncompressed bytes from the window to next_out. */\n    if (left) {\n      if (left > len) {\n        left = len;\n      }\n      //zmemcpy(s->strm->next_out, s->window + s->block_start, left);\n      s.strm.output.set(s.window.subarray(s.block_start, s.block_start + left), s.strm.next_out);\n      s.strm.next_out += left;\n      s.strm.avail_out -= left;\n      s.strm.total_out += left;\n      s.block_start += left;\n      len -= left;\n    }\n\n    /* Copy uncompressed bytes directly from next_in to next_out, updating\n     * the check value.\n     */\n    if (len) {\n      read_buf(s.strm, s.strm.output, s.strm.next_out, len);\n      s.strm.next_out += len;\n      s.strm.avail_out -= len;\n      s.strm.total_out += len;\n    }\n  } while (last === 0);\n\n  /* Update the sliding window with the last s->w_size bytes of the copied\n   * data, or append all of the copied data to the existing window if less\n   * than s->w_size bytes were copied. Also update the number of bytes to\n   * insert in the hash tables, in the event that deflateParams() switches to\n   * a non-zero compression level.\n   */\n  used -= s.strm.avail_in;    /* number of input bytes directly copied */\n  if (used) {\n    /* If any input was used, then no unused input remains in the window,\n     * therefore s->block_start == s->strstart.\n     */\n    if (used >= s.w_size) {  /* supplant the previous history */\n      s.matches = 2;     /* clear hash */\n      //zmemcpy(s->window, s->strm->next_in - s->w_size, s->w_size);\n      s.window.set(s.strm.input.subarray(s.strm.next_in - s.w_size, s.strm.next_in), 0);\n      s.strstart = s.w_size;\n      s.insert = s.strstart;\n    }\n    else {\n      if (s.window_size - s.strstart <= used) {\n        /* Slide the window down. */\n        s.strstart -= s.w_size;\n        //zmemcpy(s->window, s->window + s->w_size, s->strstart);\n        s.window.set(s.window.subarray(s.w_size, s.w_size + s.strstart), 0);\n        if (s.matches < 2) {\n          s.matches++;   /* add a pending slide_hash() */\n        }\n        if (s.insert > s.strstart) {\n          s.insert = s.strstart;\n        }\n      }\n      //zmemcpy(s->window + s->strstart, s->strm->next_in - used, used);\n      s.window.set(s.strm.input.subarray(s.strm.next_in - used, s.strm.next_in), s.strstart);\n      s.strstart += used;\n      s.insert += used > s.w_size - s.insert ? s.w_size - s.insert : used;\n    }\n    s.block_start = s.strstart;\n  }\n  if (s.high_water < s.strstart) {\n    s.high_water = s.strstart;\n  }\n\n  /* If the last block was written to next_out, then done. */\n  if (last) {\n    return BS_FINISH_DONE;\n  }\n\n  /* If flushing and all input has been consumed, then done. */\n  if (flush !== Z_NO_FLUSH$2 && flush !== Z_FINISH$3 &&\n    s.strm.avail_in === 0 && s.strstart === s.block_start) {\n    return BS_BLOCK_DONE;\n  }\n\n  /* Fill the window with any remaining input. */\n  have = s.window_size - s.strstart;\n  if (s.strm.avail_in > have && s.block_start >= s.w_size) {\n    /* Slide the window down. */\n    s.block_start -= s.w_size;\n    s.strstart -= s.w_size;\n    //zmemcpy(s->window, s->window + s->w_size, s->strstart);\n    s.window.set(s.window.subarray(s.w_size, s.w_size + s.strstart), 0);\n    if (s.matches < 2) {\n      s.matches++;       /* add a pending slide_hash() */\n    }\n    have += s.w_size;      /* more space now */\n    if (s.insert > s.strstart) {\n      s.insert = s.strstart;\n    }\n  }\n  if (have > s.strm.avail_in) {\n    have = s.strm.avail_in;\n  }\n  if (have) {\n    read_buf(s.strm, s.window, s.strstart, have);\n    s.strstart += have;\n    s.insert += have > s.w_size - s.insert ? s.w_size - s.insert : have;\n  }\n  if (s.high_water < s.strstart) {\n    s.high_water = s.strstart;\n  }\n\n  /* There was not enough avail_out to write a complete worthy or flushed\n   * stored block to next_out. Write a stored block to pending instead, if we\n   * have enough input for a worthy block, or if flushing and there is enough\n   * room for the remaining input as a stored block in the pending buffer.\n   */\n  have = (s.bi_valid + 42) >> 3;     /* number of header bytes */\n    /* maximum stored block length that will fit in pending: */\n  have = s.pending_buf_size - have > 65535/* MAX_STORED */ ? 65535/* MAX_STORED */ : s.pending_buf_size - have;\n  min_block = have > s.w_size ? s.w_size : have;\n  left = s.strstart - s.block_start;\n  if (left >= min_block ||\n     ((left || flush === Z_FINISH$3) && flush !== Z_NO_FLUSH$2 &&\n     s.strm.avail_in === 0 && left <= have)) {\n    len = left > have ? have : left;\n    last = flush === Z_FINISH$3 && s.strm.avail_in === 0 &&\n         len === left ? 1 : 0;\n    _tr_stored_block(s, s.block_start, len, last);\n    s.block_start += len;\n    flush_pending(s.strm);\n  }\n\n  /* We've done all we can with the available input and output. */\n  return last ? BS_FINISH_STARTED : BS_NEED_MORE;\n};\n\n\n/* ===========================================================================\n * Compress as much as possible from the input stream, return the current\n * block state.\n * This function does not perform lazy evaluation of matches and inserts\n * new strings in the dictionary only for unmatched strings or for short\n * matches. It is used only for the fast compression options.\n */\nconst deflate_fast = (s, flush) => {\n\n  let hash_head;        /* head of the hash chain */\n  let bflush;           /* set if current block must be flushed */\n\n  for (;;) {\n    /* Make sure that we always have enough lookahead, except\n     * at the end of the input file. We need MAX_MATCH bytes\n     * for the next match, plus MIN_MATCH bytes to insert the\n     * string following the next match.\n     */\n    if (s.lookahead < MIN_LOOKAHEAD) {\n      fill_window(s);\n      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH$2) {\n        return BS_NEED_MORE;\n      }\n      if (s.lookahead === 0) {\n        break; /* flush the current block */\n      }\n    }\n\n    /* Insert the string window[strstart .. strstart+2] in the\n     * dictionary, and set hash_head to the head of the hash chain:\n     */\n    hash_head = 0/*NIL*/;\n    if (s.lookahead >= MIN_MATCH) {\n      /*** INSERT_STRING(s, s.strstart, hash_head); ***/\n      s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);\n      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];\n      s.head[s.ins_h] = s.strstart;\n      /***/\n    }\n\n    /* Find the longest match, discarding those <= prev_length.\n     * At this point we have always match_length < MIN_MATCH\n     */\n    if (hash_head !== 0/*NIL*/ && ((s.strstart - hash_head) <= (s.w_size - MIN_LOOKAHEAD))) {\n      /* To simplify the code, we prevent matches with the string\n       * of window index 0 (in particular we have to avoid a match\n       * of the string with itself at the start of the input file).\n       */\n      s.match_length = longest_match(s, hash_head);\n      /* longest_match() sets match_start */\n    }\n    if (s.match_length >= MIN_MATCH) {\n      // check_match(s, s.strstart, s.match_start, s.match_length); // for debug only\n\n      /*** _tr_tally_dist(s, s.strstart - s.match_start,\n                     s.match_length - MIN_MATCH, bflush); ***/\n      bflush = _tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH);\n\n      s.lookahead -= s.match_length;\n\n      /* Insert new strings in the hash table only if the match length\n       * is not too large. This saves time but degrades compression.\n       */\n      if (s.match_length <= s.max_lazy_match/*max_insert_length*/ && s.lookahead >= MIN_MATCH) {\n        s.match_length--; /* string at strstart already in table */\n        do {\n          s.strstart++;\n          /*** INSERT_STRING(s, s.strstart, hash_head); ***/\n          s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);\n          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];\n          s.head[s.ins_h] = s.strstart;\n          /***/\n          /* strstart never exceeds WSIZE-MAX_MATCH, so there are\n           * always MIN_MATCH bytes ahead.\n           */\n        } while (--s.match_length !== 0);\n        s.strstart++;\n      } else\n      {\n        s.strstart += s.match_length;\n        s.match_length = 0;\n        s.ins_h = s.window[s.strstart];\n        /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */\n        s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + 1]);\n\n//#if MIN_MATCH != 3\n//                Call UPDATE_HASH() MIN_MATCH-3 more times\n//#endif\n        /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not\n         * matter since it will be recomputed at next deflate call.\n         */\n      }\n    } else {\n      /* No match, output a literal byte */\n      //Tracevv((stderr,\"%c\", s.window[s.strstart]));\n      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/\n      bflush = _tr_tally(s, 0, s.window[s.strstart]);\n\n      s.lookahead--;\n      s.strstart++;\n    }\n    if (bflush) {\n      /*** FLUSH_BLOCK(s, 0); ***/\n      flush_block_only(s, false);\n      if (s.strm.avail_out === 0) {\n        return BS_NEED_MORE;\n      }\n      /***/\n    }\n  }\n  s.insert = ((s.strstart < (MIN_MATCH - 1)) ? s.strstart : MIN_MATCH - 1);\n  if (flush === Z_FINISH$3) {\n    /*** FLUSH_BLOCK(s, 1); ***/\n    flush_block_only(s, true);\n    if (s.strm.avail_out === 0) {\n      return BS_FINISH_STARTED;\n    }\n    /***/\n    return BS_FINISH_DONE;\n  }\n  if (s.sym_next) {\n    /*** FLUSH_BLOCK(s, 0); ***/\n    flush_block_only(s, false);\n    if (s.strm.avail_out === 0) {\n      return BS_NEED_MORE;\n    }\n    /***/\n  }\n  return BS_BLOCK_DONE;\n};\n\n/* ===========================================================================\n * Same as above, but achieves better compression. We use a lazy\n * evaluation for matches: a match is finally adopted only if there is\n * no better match at the next window position.\n */\nconst deflate_slow = (s, flush) => {\n\n  let hash_head;          /* head of hash chain */\n  let bflush;              /* set if current block must be flushed */\n\n  let max_insert;\n\n  /* Process the input block. */\n  for (;;) {\n    /* Make sure that we always have enough lookahead, except\n     * at the end of the input file. We need MAX_MATCH bytes\n     * for the next match, plus MIN_MATCH bytes to insert the\n     * string following the next match.\n     */\n    if (s.lookahead < MIN_LOOKAHEAD) {\n      fill_window(s);\n      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH$2) {\n        return BS_NEED_MORE;\n      }\n      if (s.lookahead === 0) { break; } /* flush the current block */\n    }\n\n    /* Insert the string window[strstart .. strstart+2] in the\n     * dictionary, and set hash_head to the head of the hash chain:\n     */\n    hash_head = 0/*NIL*/;\n    if (s.lookahead >= MIN_MATCH) {\n      /*** INSERT_STRING(s, s.strstart, hash_head); ***/\n      s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);\n      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];\n      s.head[s.ins_h] = s.strstart;\n      /***/\n    }\n\n    /* Find the longest match, discarding those <= prev_length.\n     */\n    s.prev_length = s.match_length;\n    s.prev_match = s.match_start;\n    s.match_length = MIN_MATCH - 1;\n\n    if (hash_head !== 0/*NIL*/ && s.prev_length < s.max_lazy_match &&\n        s.strstart - hash_head <= (s.w_size - MIN_LOOKAHEAD)/*MAX_DIST(s)*/) {\n      /* To simplify the code, we prevent matches with the string\n       * of window index 0 (in particular we have to avoid a match\n       * of the string with itself at the start of the input file).\n       */\n      s.match_length = longest_match(s, hash_head);\n      /* longest_match() sets match_start */\n\n      if (s.match_length <= 5 &&\n         (s.strategy === Z_FILTERED || (s.match_length === MIN_MATCH && s.strstart - s.match_start > 4096/*TOO_FAR*/))) {\n\n        /* If prev_match is also MIN_MATCH, match_start is garbage\n         * but we will ignore the current match anyway.\n         */\n        s.match_length = MIN_MATCH - 1;\n      }\n    }\n    /* If there was a match at the previous step and the current\n     * match is not better, output the previous match:\n     */\n    if (s.prev_length >= MIN_MATCH && s.match_length <= s.prev_length) {\n      max_insert = s.strstart + s.lookahead - MIN_MATCH;\n      /* Do not insert strings in hash table beyond this. */\n\n      //check_match(s, s.strstart-1, s.prev_match, s.prev_length);\n\n      /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match,\n                     s.prev_length - MIN_MATCH, bflush);***/\n      bflush = _tr_tally(s, s.strstart - 1 - s.prev_match, s.prev_length - MIN_MATCH);\n      /* Insert in hash table all strings up to the end of the match.\n       * strstart-1 and strstart are already inserted. If there is not\n       * enough lookahead, the last two strings are not inserted in\n       * the hash table.\n       */\n      s.lookahead -= s.prev_length - 1;\n      s.prev_length -= 2;\n      do {\n        if (++s.strstart <= max_insert) {\n          /*** INSERT_STRING(s, s.strstart, hash_head); ***/\n          s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);\n          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];\n          s.head[s.ins_h] = s.strstart;\n          /***/\n        }\n      } while (--s.prev_length !== 0);\n      s.match_available = 0;\n      s.match_length = MIN_MATCH - 1;\n      s.strstart++;\n\n      if (bflush) {\n        /*** FLUSH_BLOCK(s, 0); ***/\n        flush_block_only(s, false);\n        if (s.strm.avail_out === 0) {\n          return BS_NEED_MORE;\n        }\n        /***/\n      }\n\n    } else if (s.match_available) {\n      /* If there was no match at the previous position, output a\n       * single literal. If there was a match but the current match\n       * is longer, truncate the previous match to a single literal.\n       */\n      //Tracevv((stderr,\"%c\", s->window[s->strstart-1]));\n      /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/\n      bflush = _tr_tally(s, 0, s.window[s.strstart - 1]);\n\n      if (bflush) {\n        /*** FLUSH_BLOCK_ONLY(s, 0) ***/\n        flush_block_only(s, false);\n        /***/\n      }\n      s.strstart++;\n      s.lookahead--;\n      if (s.strm.avail_out === 0) {\n        return BS_NEED_MORE;\n      }\n    } else {\n      /* There is no previous match to compare with, wait for\n       * the next step to decide.\n       */\n      s.match_available = 1;\n      s.strstart++;\n      s.lookahead--;\n    }\n  }\n  //Assert (flush != Z_NO_FLUSH, \"no flush?\");\n  if (s.match_available) {\n    //Tracevv((stderr,\"%c\", s->window[s->strstart-1]));\n    /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/\n    bflush = _tr_tally(s, 0, s.window[s.strstart - 1]);\n\n    s.match_available = 0;\n  }\n  s.insert = s.strstart < MIN_MATCH - 1 ? s.strstart : MIN_MATCH - 1;\n  if (flush === Z_FINISH$3) {\n    /*** FLUSH_BLOCK(s, 1); ***/\n    flush_block_only(s, true);\n    if (s.strm.avail_out === 0) {\n      return BS_FINISH_STARTED;\n    }\n    /***/\n    return BS_FINISH_DONE;\n  }\n  if (s.sym_next) {\n    /*** FLUSH_BLOCK(s, 0); ***/\n    flush_block_only(s, false);\n    if (s.strm.avail_out === 0) {\n      return BS_NEED_MORE;\n    }\n    /***/\n  }\n\n  return BS_BLOCK_DONE;\n};\n\n\n/* ===========================================================================\n * For Z_RLE, simply look for runs of bytes, generate matches only of distance\n * one.  Do not maintain a hash table.  (It will be regenerated if this run of\n * deflate switches away from Z_RLE.)\n */\nconst deflate_rle = (s, flush) => {\n\n  let bflush;            /* set if current block must be flushed */\n  let prev;              /* byte at distance one to match */\n  let scan, strend;      /* scan goes up to strend for length of run */\n\n  const _win = s.window;\n\n  for (;;) {\n    /* Make sure that we always have enough lookahead, except\n     * at the end of the input file. We need MAX_MATCH bytes\n     * for the longest run, plus one for the unrolled loop.\n     */\n    if (s.lookahead <= MAX_MATCH) {\n      fill_window(s);\n      if (s.lookahead <= MAX_MATCH && flush === Z_NO_FLUSH$2) {\n        return BS_NEED_MORE;\n      }\n      if (s.lookahead === 0) { break; } /* flush the current block */\n    }\n\n    /* See how many times the previous byte repeats */\n    s.match_length = 0;\n    if (s.lookahead >= MIN_MATCH && s.strstart > 0) {\n      scan = s.strstart - 1;\n      prev = _win[scan];\n      if (prev === _win[++scan] && prev === _win[++scan] && prev === _win[++scan]) {\n        strend = s.strstart + MAX_MATCH;\n        do {\n          /*jshint noempty:false*/\n        } while (prev === _win[++scan] && prev === _win[++scan] &&\n                 prev === _win[++scan] && prev === _win[++scan] &&\n                 prev === _win[++scan] && prev === _win[++scan] &&\n                 prev === _win[++scan] && prev === _win[++scan] &&\n                 scan < strend);\n        s.match_length = MAX_MATCH - (strend - scan);\n        if (s.match_length > s.lookahead) {\n          s.match_length = s.lookahead;\n        }\n      }\n      //Assert(scan <= s->window+(uInt)(s->window_size-1), \"wild scan\");\n    }\n\n    /* Emit match if have run of MIN_MATCH or longer, else emit literal */\n    if (s.match_length >= MIN_MATCH) {\n      //check_match(s, s.strstart, s.strstart - 1, s.match_length);\n\n      /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/\n      bflush = _tr_tally(s, 1, s.match_length - MIN_MATCH);\n\n      s.lookahead -= s.match_length;\n      s.strstart += s.match_length;\n      s.match_length = 0;\n    } else {\n      /* No match, output a literal byte */\n      //Tracevv((stderr,\"%c\", s->window[s->strstart]));\n      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/\n      bflush = _tr_tally(s, 0, s.window[s.strstart]);\n\n      s.lookahead--;\n      s.strstart++;\n    }\n    if (bflush) {\n      /*** FLUSH_BLOCK(s, 0); ***/\n      flush_block_only(s, false);\n      if (s.strm.avail_out === 0) {\n        return BS_NEED_MORE;\n      }\n      /***/\n    }\n  }\n  s.insert = 0;\n  if (flush === Z_FINISH$3) {\n    /*** FLUSH_BLOCK(s, 1); ***/\n    flush_block_only(s, true);\n    if (s.strm.avail_out === 0) {\n      return BS_FINISH_STARTED;\n    }\n    /***/\n    return BS_FINISH_DONE;\n  }\n  if (s.sym_next) {\n    /*** FLUSH_BLOCK(s, 0); ***/\n    flush_block_only(s, false);\n    if (s.strm.avail_out === 0) {\n      return BS_NEED_MORE;\n    }\n    /***/\n  }\n  return BS_BLOCK_DONE;\n};\n\n/* ===========================================================================\n * For Z_HUFFMAN_ONLY, do not look for matches.  Do not maintain a hash table.\n * (It will be regenerated if this run of deflate switches away from Huffman.)\n */\nconst deflate_huff = (s, flush) => {\n\n  let bflush;             /* set if current block must be flushed */\n\n  for (;;) {\n    /* Make sure that we have a literal to write. */\n    if (s.lookahead === 0) {\n      fill_window(s);\n      if (s.lookahead === 0) {\n        if (flush === Z_NO_FLUSH$2) {\n          return BS_NEED_MORE;\n        }\n        break;      /* flush the current block */\n      }\n    }\n\n    /* Output a literal byte */\n    s.match_length = 0;\n    //Tracevv((stderr,\"%c\", s->window[s->strstart]));\n    /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/\n    bflush = _tr_tally(s, 0, s.window[s.strstart]);\n    s.lookahead--;\n    s.strstart++;\n    if (bflush) {\n      /*** FLUSH_BLOCK(s, 0); ***/\n      flush_block_only(s, false);\n      if (s.strm.avail_out === 0) {\n        return BS_NEED_MORE;\n      }\n      /***/\n    }\n  }\n  s.insert = 0;\n  if (flush === Z_FINISH$3) {\n    /*** FLUSH_BLOCK(s, 1); ***/\n    flush_block_only(s, true);\n    if (s.strm.avail_out === 0) {\n      return BS_FINISH_STARTED;\n    }\n    /***/\n    return BS_FINISH_DONE;\n  }\n  if (s.sym_next) {\n    /*** FLUSH_BLOCK(s, 0); ***/\n    flush_block_only(s, false);\n    if (s.strm.avail_out === 0) {\n      return BS_NEED_MORE;\n    }\n    /***/\n  }\n  return BS_BLOCK_DONE;\n};\n\n/* Values for max_lazy_match, good_match and max_chain_length, depending on\n * the desired pack level (0..9). The values given below have been tuned to\n * exclude worst case performance for pathological files. Better values may be\n * found for specific files.\n */\nfunction Config(good_length, max_lazy, nice_length, max_chain, func) {\n\n  this.good_length = good_length;\n  this.max_lazy = max_lazy;\n  this.nice_length = nice_length;\n  this.max_chain = max_chain;\n  this.func = func;\n}\n\nconst configuration_table = [\n  /*      good lazy nice chain */\n  new Config(0, 0, 0, 0, deflate_stored),          /* 0 store only */\n  new Config(4, 4, 8, 4, deflate_fast),            /* 1 max speed, no lazy matches */\n  new Config(4, 5, 16, 8, deflate_fast),           /* 2 */\n  new Config(4, 6, 32, 32, deflate_fast),          /* 3 */\n\n  new Config(4, 4, 16, 16, deflate_slow),          /* 4 lazy matches */\n  new Config(8, 16, 32, 32, deflate_slow),         /* 5 */\n  new Config(8, 16, 128, 128, deflate_slow),       /* 6 */\n  new Config(8, 32, 128, 256, deflate_slow),       /* 7 */\n  new Config(32, 128, 258, 1024, deflate_slow),    /* 8 */\n  new Config(32, 258, 258, 4096, deflate_slow)     /* 9 max compression */\n];\n\n\n/* ===========================================================================\n * Initialize the \"longest match\" routines for a new zlib stream\n */\nconst lm_init = (s) => {\n\n  s.window_size = 2 * s.w_size;\n\n  /*** CLEAR_HASH(s); ***/\n  zero(s.head); // Fill with NIL (= 0);\n\n  /* Set the default configuration parameters:\n   */\n  s.max_lazy_match = configuration_table[s.level].max_lazy;\n  s.good_match = configuration_table[s.level].good_length;\n  s.nice_match = configuration_table[s.level].nice_length;\n  s.max_chain_length = configuration_table[s.level].max_chain;\n\n  s.strstart = 0;\n  s.block_start = 0;\n  s.lookahead = 0;\n  s.insert = 0;\n  s.match_length = s.prev_length = MIN_MATCH - 1;\n  s.match_available = 0;\n  s.ins_h = 0;\n};\n\n\nfunction DeflateState() {\n  this.strm = null;            /* pointer back to this zlib stream */\n  this.status = 0;            /* as the name implies */\n  this.pending_buf = null;      /* output still pending */\n  this.pending_buf_size = 0;  /* size of pending_buf */\n  this.pending_out = 0;       /* next pending byte to output to the stream */\n  this.pending = 0;           /* nb of bytes in the pending buffer */\n  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */\n  this.gzhead = null;         /* gzip header information to write */\n  this.gzindex = 0;           /* where in extra, name, or comment */\n  this.method = Z_DEFLATED$2; /* can only be DEFLATED */\n  this.last_flush = -1;   /* value of flush param for previous deflate call */\n\n  this.w_size = 0;  /* LZ77 window size (32K by default) */\n  this.w_bits = 0;  /* log2(w_size)  (8..16) */\n  this.w_mask = 0;  /* w_size - 1 */\n\n  this.window = null;\n  /* Sliding window. Input bytes are read into the second half of the window,\n   * and move to the first half later to keep a dictionary of at least wSize\n   * bytes. With this organization, matches are limited to a distance of\n   * wSize-MAX_MATCH bytes, but this ensures that IO is always\n   * performed with a length multiple of the block size.\n   */\n\n  this.window_size = 0;\n  /* Actual size of window: 2*wSize, except when the user input buffer\n   * is directly used as sliding window.\n   */\n\n  this.prev = null;\n  /* Link to older string with same hash index. To limit the size of this\n   * array to 64K, this link is maintained only for the last 32K strings.\n   * An index in this array is thus a window index modulo 32K.\n   */\n\n  this.head = null;   /* Heads of the hash chains or NIL. */\n\n  this.ins_h = 0;       /* hash index of string to be inserted */\n  this.hash_size = 0;   /* number of elements in hash table */\n  this.hash_bits = 0;   /* log2(hash_size) */\n  this.hash_mask = 0;   /* hash_size-1 */\n\n  this.hash_shift = 0;\n  /* Number of bits by which ins_h must be shifted at each input\n   * step. It must be such that after MIN_MATCH steps, the oldest\n   * byte no longer takes part in the hash key, that is:\n   *   hash_shift * MIN_MATCH >= hash_bits\n   */\n\n  this.block_start = 0;\n  /* Window position at the beginning of the current output block. Gets\n   * negative when the window is moved backwards.\n   */\n\n  this.match_length = 0;      /* length of best match */\n  this.prev_match = 0;        /* previous match */\n  this.match_available = 0;   /* set if previous match exists */\n  this.strstart = 0;          /* start of string to insert */\n  this.match_start = 0;       /* start of matching string */\n  this.lookahead = 0;         /* number of valid bytes ahead in window */\n\n  this.prev_length = 0;\n  /* Length of the best match at previous step. Matches not greater than this\n   * are discarded. This is used in the lazy match evaluation.\n   */\n\n  this.max_chain_length = 0;\n  /* To speed up deflation, hash chains are never searched beyond this\n   * length.  A higher limit improves compression ratio but degrades the\n   * speed.\n   */\n\n  this.max_lazy_match = 0;\n  /* Attempt to find a better match only when the current match is strictly\n   * smaller than this value. This mechanism is used only for compression\n   * levels >= 4.\n   */\n  // That's alias to max_lazy_match, don't use directly\n  //this.max_insert_length = 0;\n  /* Insert new strings in the hash table only if the match length is not\n   * greater than this length. This saves time but degrades compression.\n   * max_insert_length is used only for compression levels <= 3.\n   */\n\n  this.level = 0;     /* compression level (1..9) */\n  this.strategy = 0;  /* favor or force Huffman coding*/\n\n  this.good_match = 0;\n  /* Use a faster search when the previous match is longer than this */\n\n  this.nice_match = 0; /* Stop searching when current match exceeds this */\n\n              /* used by trees.c: */\n\n  /* Didn't use ct_data typedef below to suppress compiler warning */\n\n  // struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */\n  // struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */\n  // struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */\n\n  // Use flat array of DOUBLE size, with interleaved fata,\n  // because JS does not support effective\n  this.dyn_ltree  = new Uint16Array(HEAP_SIZE * 2);\n  this.dyn_dtree  = new Uint16Array((2 * D_CODES + 1) * 2);\n  this.bl_tree    = new Uint16Array((2 * BL_CODES + 1) * 2);\n  zero(this.dyn_ltree);\n  zero(this.dyn_dtree);\n  zero(this.bl_tree);\n\n  this.l_desc   = null;         /* desc. for literal tree */\n  this.d_desc   = null;         /* desc. for distance tree */\n  this.bl_desc  = null;         /* desc. for bit length tree */\n\n  //ush bl_count[MAX_BITS+1];\n  this.bl_count = new Uint16Array(MAX_BITS + 1);\n  /* number of codes at each bit length for an optimal tree */\n\n  //int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */\n  this.heap = new Uint16Array(2 * L_CODES + 1);  /* heap used to build the Huffman trees */\n  zero(this.heap);\n\n  this.heap_len = 0;               /* number of elements in the heap */\n  this.heap_max = 0;               /* element of largest frequency */\n  /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.\n   * The same heap array is used to build all trees.\n   */\n\n  this.depth = new Uint16Array(2 * L_CODES + 1); //uch depth[2*L_CODES+1];\n  zero(this.depth);\n  /* Depth of each subtree used as tie breaker for trees of equal frequency\n   */\n\n  this.sym_buf = 0;        /* buffer for distances and literals/lengths */\n\n  this.lit_bufsize = 0;\n  /* Size of match buffer for literals/lengths.  There are 4 reasons for\n   * limiting lit_bufsize to 64K:\n   *   - frequencies can be kept in 16 bit counters\n   *   - if compression is not successful for the first block, all input\n   *     data is still in the window so we can still emit a stored block even\n   *     when input comes from standard input.  (This can also be done for\n   *     all blocks if lit_bufsize is not greater than 32K.)\n   *   - if compression is not successful for a file smaller than 64K, we can\n   *     even emit a stored file instead of a stored block (saving 5 bytes).\n   *     This is applicable only for zip (not gzip or zlib).\n   *   - creating new Huffman trees less frequently may not provide fast\n   *     adaptation to changes in the input data statistics. (Take for\n   *     example a binary file with poorly compressible code followed by\n   *     a highly compressible string table.) Smaller buffer sizes give\n   *     fast adaptation but have of course the overhead of transmitting\n   *     trees more frequently.\n   *   - I can't count above 4\n   */\n\n  this.sym_next = 0;      /* running index in sym_buf */\n  this.sym_end = 0;       /* symbol table full when sym_next reaches this */\n\n  this.opt_len = 0;       /* bit length of current block with optimal trees */\n  this.static_len = 0;    /* bit length of current block with static trees */\n  this.matches = 0;       /* number of string matches in current block */\n  this.insert = 0;        /* bytes at end of window left to insert */\n\n\n  this.bi_buf = 0;\n  /* Output buffer. bits are inserted starting at the bottom (least\n   * significant bits).\n   */\n  this.bi_valid = 0;\n  /* Number of valid bits in bi_buf.  All bits above the last valid bit\n   * are always zero.\n   */\n\n  // Used for window memory init. We safely ignore it for JS. That makes\n  // sense only for pointers and memory check tools.\n  //this.high_water = 0;\n  /* High water mark offset in window for initialized bytes -- bytes above\n   * this are set to zero in order to avoid memory check warnings when\n   * longest match routines access bytes past the input.  This is then\n   * updated to the new high water mark.\n   */\n}\n\n\n/* =========================================================================\n * Check for a valid deflate stream state. Return 0 if ok, 1 if not.\n */\nconst deflateStateCheck = (strm) => {\n\n  if (!strm) {\n    return 1;\n  }\n  const s = strm.state;\n  if (!s || s.strm !== strm || (s.status !== INIT_STATE &&\n//#ifdef GZIP\n                                s.status !== GZIP_STATE &&\n//#endif\n                                s.status !== EXTRA_STATE &&\n                                s.status !== NAME_STATE &&\n                                s.status !== COMMENT_STATE &&\n                                s.status !== HCRC_STATE &&\n                                s.status !== BUSY_STATE &&\n                                s.status !== FINISH_STATE)) {\n    return 1;\n  }\n  return 0;\n};\n\n\nconst deflateResetKeep = (strm) => {\n\n  if (deflateStateCheck(strm)) {\n    return err(strm, Z_STREAM_ERROR$2);\n  }\n\n  strm.total_in = strm.total_out = 0;\n  strm.data_type = Z_UNKNOWN;\n\n  const s = strm.state;\n  s.pending = 0;\n  s.pending_out = 0;\n\n  if (s.wrap < 0) {\n    s.wrap = -s.wrap;\n    /* was made negative by deflate(..., Z_FINISH); */\n  }\n  s.status =\n//#ifdef GZIP\n    s.wrap === 2 ? GZIP_STATE :\n//#endif\n    s.wrap ? INIT_STATE : BUSY_STATE;\n  strm.adler = (s.wrap === 2) ?\n    0  // crc32(0, Z_NULL, 0)\n  :\n    1; // adler32(0, Z_NULL, 0)\n  s.last_flush = -2;\n  _tr_init(s);\n  return Z_OK$3;\n};\n\n\nconst deflateReset = (strm) => {\n\n  const ret = deflateResetKeep(strm);\n  if (ret === Z_OK$3) {\n    lm_init(strm.state);\n  }\n  return ret;\n};\n\n\nconst deflateSetHeader = (strm, head) => {\n\n  if (deflateStateCheck(strm) || strm.state.wrap !== 2) {\n    return Z_STREAM_ERROR$2;\n  }\n  strm.state.gzhead = head;\n  return Z_OK$3;\n};\n\n\nconst deflateInit2 = (strm, level, method, windowBits, memLevel, strategy) => {\n\n  if (!strm) { // === Z_NULL\n    return Z_STREAM_ERROR$2;\n  }\n  let wrap = 1;\n\n  if (level === Z_DEFAULT_COMPRESSION$1) {\n    level = 6;\n  }\n\n  if (windowBits < 0) { /* suppress zlib wrapper */\n    wrap = 0;\n    windowBits = -windowBits;\n  }\n\n  else if (windowBits > 15) {\n    wrap = 2;           /* write gzip wrapper instead */\n    windowBits -= 16;\n  }\n\n\n  if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method !== Z_DEFLATED$2 ||\n    windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||\n    strategy < 0 || strategy > Z_FIXED || (windowBits === 8 && wrap !== 1)) {\n    return err(strm, Z_STREAM_ERROR$2);\n  }\n\n\n  if (windowBits === 8) {\n    windowBits = 9;\n  }\n  /* until 256-byte window bug fixed */\n\n  const s = new DeflateState();\n\n  strm.state = s;\n  s.strm = strm;\n  s.status = INIT_STATE;     /* to pass state test in deflateReset() */\n\n  s.wrap = wrap;\n  s.gzhead = null;\n  s.w_bits = windowBits;\n  s.w_size = 1 << s.w_bits;\n  s.w_mask = s.w_size - 1;\n\n  s.hash_bits = memLevel + 7;\n  s.hash_size = 1 << s.hash_bits;\n  s.hash_mask = s.hash_size - 1;\n  s.hash_shift = ~~((s.hash_bits + MIN_MATCH - 1) / MIN_MATCH);\n\n  s.window = new Uint8Array(s.w_size * 2);\n  s.head = new Uint16Array(s.hash_size);\n  s.prev = new Uint16Array(s.w_size);\n\n  // Don't need mem init magic for JS.\n  //s.high_water = 0;  /* nothing written to s->window yet */\n\n  s.lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */\n\n  /* We overlay pending_buf and sym_buf. This works since the average size\n   * for length/distance pairs over any compressed block is assured to be 31\n   * bits or less.\n   *\n   * Analysis: The longest fixed codes are a length code of 8 bits plus 5\n   * extra bits, for lengths 131 to 257. The longest fixed distance codes are\n   * 5 bits plus 13 extra bits, for distances 16385 to 32768. The longest\n   * possible fixed-codes length/distance pair is then 31 bits total.\n   *\n   * sym_buf starts one-fourth of the way into pending_buf. So there are\n   * three bytes in sym_buf for every four bytes in pending_buf. Each symbol\n   * in sym_buf is three bytes -- two for the distance and one for the\n   * literal/length. As each symbol is consumed, the pointer to the next\n   * sym_buf value to read moves forward three bytes. From that symbol, up to\n   * 31 bits are written to pending_buf. The closest the written pending_buf\n   * bits gets to the next sym_buf symbol to read is just before the last\n   * code is written. At that time, 31*(n-2) bits have been written, just\n   * after 24*(n-2) bits have been consumed from sym_buf. sym_buf starts at\n   * 8*n bits into pending_buf. (Note that the symbol buffer fills when n-1\n   * symbols are written.) The closest the writing gets to what is unread is\n   * then n+14 bits. Here n is lit_bufsize, which is 16384 by default, and\n   * can range from 128 to 32768.\n   *\n   * Therefore, at a minimum, there are 142 bits of space between what is\n   * written and what is read in the overlain buffers, so the symbols cannot\n   * be overwritten by the compressed data. That space is actually 139 bits,\n   * due to the three-bit fixed-code block header.\n   *\n   * That covers the case where either Z_FIXED is specified, forcing fixed\n   * codes, or when the use of fixed codes is chosen, because that choice\n   * results in a smaller compressed block than dynamic codes. That latter\n   * condition then assures that the above analysis also covers all dynamic\n   * blocks. A dynamic-code block will only be chosen to be emitted if it has\n   * fewer bits than a fixed-code block would for the same set of symbols.\n   * Therefore its average symbol length is assured to be less than 31. So\n   * the compressed data for a dynamic block also cannot overwrite the\n   * symbols from which it is being constructed.\n   */\n\n  s.pending_buf_size = s.lit_bufsize * 4;\n  s.pending_buf = new Uint8Array(s.pending_buf_size);\n\n  // It is offset from `s.pending_buf` (size is `s.lit_bufsize * 2`)\n  //s->sym_buf = s->pending_buf + s->lit_bufsize;\n  s.sym_buf = s.lit_bufsize;\n\n  //s->sym_end = (s->lit_bufsize - 1) * 3;\n  s.sym_end = (s.lit_bufsize - 1) * 3;\n  /* We avoid equality with lit_bufsize*3 because of wraparound at 64K\n   * on 16 bit machines and because stored blocks are restricted to\n   * 64K-1 bytes.\n   */\n\n  s.level = level;\n  s.strategy = strategy;\n  s.method = method;\n\n  return deflateReset(strm);\n};\n\nconst deflateInit = (strm, level) => {\n\n  return deflateInit2(strm, level, Z_DEFLATED$2, MAX_WBITS$1, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY$1);\n};\n\n\n/* ========================================================================= */\nconst deflate$2 = (strm, flush) => {\n\n  if (deflateStateCheck(strm) || flush > Z_BLOCK$1 || flush < 0) {\n    return strm ? err(strm, Z_STREAM_ERROR$2) : Z_STREAM_ERROR$2;\n  }\n\n  const s = strm.state;\n\n  if (!strm.output ||\n      (strm.avail_in !== 0 && !strm.input) ||\n      (s.status === FINISH_STATE && flush !== Z_FINISH$3)) {\n    return err(strm, (strm.avail_out === 0) ? Z_BUF_ERROR$1 : Z_STREAM_ERROR$2);\n  }\n\n  const old_flush = s.last_flush;\n  s.last_flush = flush;\n\n  /* Flush as much pending output as possible */\n  if (s.pending !== 0) {\n    flush_pending(strm);\n    if (strm.avail_out === 0) {\n      /* Since avail_out is 0, deflate will be called again with\n       * more output space, but possibly with both pending and\n       * avail_in equal to zero. There won't be anything to do,\n       * but this is not an error situation so make sure we\n       * return OK instead of BUF_ERROR at next call of deflate:\n       */\n      s.last_flush = -1;\n      return Z_OK$3;\n    }\n\n    /* Make sure there is something to do and avoid duplicate consecutive\n     * flushes. For repeated and useless calls with Z_FINISH, we keep\n     * returning Z_STREAM_END instead of Z_BUF_ERROR.\n     */\n  } else if (strm.avail_in === 0 && rank(flush) <= rank(old_flush) &&\n    flush !== Z_FINISH$3) {\n    return err(strm, Z_BUF_ERROR$1);\n  }\n\n  /* User must not provide more input after the first FINISH: */\n  if (s.status === FINISH_STATE && strm.avail_in !== 0) {\n    return err(strm, Z_BUF_ERROR$1);\n  }\n\n  /* Write the header */\n  if (s.status === INIT_STATE && s.wrap === 0) {\n    s.status = BUSY_STATE;\n  }\n  if (s.status === INIT_STATE) {\n    /* zlib header */\n    let header = (Z_DEFLATED$2 + ((s.w_bits - 8) << 4)) << 8;\n    let level_flags = -1;\n\n    if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) {\n      level_flags = 0;\n    } else if (s.level < 6) {\n      level_flags = 1;\n    } else if (s.level === 6) {\n      level_flags = 2;\n    } else {\n      level_flags = 3;\n    }\n    header |= (level_flags << 6);\n    if (s.strstart !== 0) { header |= PRESET_DICT; }\n    header += 31 - (header % 31);\n\n    putShortMSB(s, header);\n\n    /* Save the adler32 of the preset dictionary: */\n    if (s.strstart !== 0) {\n      putShortMSB(s, strm.adler >>> 16);\n      putShortMSB(s, strm.adler & 0xffff);\n    }\n    strm.adler = 1; // adler32(0L, Z_NULL, 0);\n    s.status = BUSY_STATE;\n\n    /* Compression must start with an empty pending buffer */\n    flush_pending(strm);\n    if (s.pending !== 0) {\n      s.last_flush = -1;\n      return Z_OK$3;\n    }\n  }\n//#ifdef GZIP\n  if (s.status === GZIP_STATE) {\n    /* gzip header */\n    strm.adler = 0;  //crc32(0L, Z_NULL, 0);\n    put_byte(s, 31);\n    put_byte(s, 139);\n    put_byte(s, 8);\n    if (!s.gzhead) { // s->gzhead == Z_NULL\n      put_byte(s, 0);\n      put_byte(s, 0);\n      put_byte(s, 0);\n      put_byte(s, 0);\n      put_byte(s, 0);\n      put_byte(s, s.level === 9 ? 2 :\n                  (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?\n                   4 : 0));\n      put_byte(s, OS_CODE);\n      s.status = BUSY_STATE;\n\n      /* Compression must start with an empty pending buffer */\n      flush_pending(strm);\n      if (s.pending !== 0) {\n        s.last_flush = -1;\n        return Z_OK$3;\n      }\n    }\n    else {\n      put_byte(s, (s.gzhead.text ? 1 : 0) +\n                  (s.gzhead.hcrc ? 2 : 0) +\n                  (!s.gzhead.extra ? 0 : 4) +\n                  (!s.gzhead.name ? 0 : 8) +\n                  (!s.gzhead.comment ? 0 : 16)\n      );\n      put_byte(s, s.gzhead.time & 0xff);\n      put_byte(s, (s.gzhead.time >> 8) & 0xff);\n      put_byte(s, (s.gzhead.time >> 16) & 0xff);\n      put_byte(s, (s.gzhead.time >> 24) & 0xff);\n      put_byte(s, s.level === 9 ? 2 :\n                  (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?\n                   4 : 0));\n      put_byte(s, s.gzhead.os & 0xff);\n      if (s.gzhead.extra && s.gzhead.extra.length) {\n        put_byte(s, s.gzhead.extra.length & 0xff);\n        put_byte(s, (s.gzhead.extra.length >> 8) & 0xff);\n      }\n      if (s.gzhead.hcrc) {\n        strm.adler = crc32_1(strm.adler, s.pending_buf, s.pending, 0);\n      }\n      s.gzindex = 0;\n      s.status = EXTRA_STATE;\n    }\n  }\n  if (s.status === EXTRA_STATE) {\n    if (s.gzhead.extra/* != Z_NULL*/) {\n      let beg = s.pending;   /* start of bytes to update crc */\n      let left = (s.gzhead.extra.length & 0xffff) - s.gzindex;\n      while (s.pending + left > s.pending_buf_size) {\n        let copy = s.pending_buf_size - s.pending;\n        // zmemcpy(s.pending_buf + s.pending,\n        //    s.gzhead.extra + s.gzindex, copy);\n        s.pending_buf.set(s.gzhead.extra.subarray(s.gzindex, s.gzindex + copy), s.pending);\n        s.pending = s.pending_buf_size;\n        //--- HCRC_UPDATE(beg) ---//\n        if (s.gzhead.hcrc && s.pending > beg) {\n          strm.adler = crc32_1(strm.adler, s.pending_buf, s.pending - beg, beg);\n        }\n        //---//\n        s.gzindex += copy;\n        flush_pending(strm);\n        if (s.pending !== 0) {\n          s.last_flush = -1;\n          return Z_OK$3;\n        }\n        beg = 0;\n        left -= copy;\n      }\n      // JS specific: s.gzhead.extra may be TypedArray or Array for backward compatibility\n      //              TypedArray.slice and TypedArray.from don't exist in IE10-IE11\n      let gzhead_extra = new Uint8Array(s.gzhead.extra);\n      // zmemcpy(s->pending_buf + s->pending,\n      //     s->gzhead->extra + s->gzindex, left);\n      s.pending_buf.set(gzhead_extra.subarray(s.gzindex, s.gzindex + left), s.pending);\n      s.pending += left;\n      //--- HCRC_UPDATE(beg) ---//\n      if (s.gzhead.hcrc && s.pending > beg) {\n        strm.adler = crc32_1(strm.adler, s.pending_buf, s.pending - beg, beg);\n      }\n      //---//\n      s.gzindex = 0;\n    }\n    s.status = NAME_STATE;\n  }\n  if (s.status === NAME_STATE) {\n    if (s.gzhead.name/* != Z_NULL*/) {\n      let beg = s.pending;   /* start of bytes to update crc */\n      let val;\n      do {\n        if (s.pending === s.pending_buf_size) {\n          //--- HCRC_UPDATE(beg) ---//\n          if (s.gzhead.hcrc && s.pending > beg) {\n            strm.adler = crc32_1(strm.adler, s.pending_buf, s.pending - beg, beg);\n          }\n          //---//\n          flush_pending(strm);\n          if (s.pending !== 0) {\n            s.last_flush = -1;\n            return Z_OK$3;\n          }\n          beg = 0;\n        }\n        // JS specific: little magic to add zero terminator to end of string\n        if (s.gzindex < s.gzhead.name.length) {\n          val = s.gzhead.name.charCodeAt(s.gzindex++) & 0xff;\n        } else {\n          val = 0;\n        }\n        put_byte(s, val);\n      } while (val !== 0);\n      //--- HCRC_UPDATE(beg) ---//\n      if (s.gzhead.hcrc && s.pending > beg) {\n        strm.adler = crc32_1(strm.adler, s.pending_buf, s.pending - beg, beg);\n      }\n      //---//\n      s.gzindex = 0;\n    }\n    s.status = COMMENT_STATE;\n  }\n  if (s.status === COMMENT_STATE) {\n    if (s.gzhead.comment/* != Z_NULL*/) {\n      let beg = s.pending;   /* start of bytes to update crc */\n      let val;\n      do {\n        if (s.pending === s.pending_buf_size) {\n          //--- HCRC_UPDATE(beg) ---//\n          if (s.gzhead.hcrc && s.pending > beg) {\n            strm.adler = crc32_1(strm.adler, s.pending_buf, s.pending - beg, beg);\n          }\n          //---//\n          flush_pending(strm);\n          if (s.pending !== 0) {\n            s.last_flush = -1;\n            return Z_OK$3;\n          }\n          beg = 0;\n        }\n        // JS specific: little magic to add zero terminator to end of string\n        if (s.gzindex < s.gzhead.comment.length) {\n          val = s.gzhead.comment.charCodeAt(s.gzindex++) & 0xff;\n        } else {\n          val = 0;\n        }\n        put_byte(s, val);\n      } while (val !== 0);\n      //--- HCRC_UPDATE(beg) ---//\n      if (s.gzhead.hcrc && s.pending > beg) {\n        strm.adler = crc32_1(strm.adler, s.pending_buf, s.pending - beg, beg);\n      }\n      //---//\n    }\n    s.status = HCRC_STATE;\n  }\n  if (s.status === HCRC_STATE) {\n    if (s.gzhead.hcrc) {\n      if (s.pending + 2 > s.pending_buf_size) {\n        flush_pending(strm);\n        if (s.pending !== 0) {\n          s.last_flush = -1;\n          return Z_OK$3;\n        }\n      }\n      put_byte(s, strm.adler & 0xff);\n      put_byte(s, (strm.adler >> 8) & 0xff);\n      strm.adler = 0; //crc32(0L, Z_NULL, 0);\n    }\n    s.status = BUSY_STATE;\n\n    /* Compression must start with an empty pending buffer */\n    flush_pending(strm);\n    if (s.pending !== 0) {\n      s.last_flush = -1;\n      return Z_OK$3;\n    }\n  }\n//#endif\n\n  /* Start a new block or continue the current one.\n   */\n  if (strm.avail_in !== 0 || s.lookahead !== 0 ||\n    (flush !== Z_NO_FLUSH$2 && s.status !== FINISH_STATE)) {\n    let bstate = s.level === 0 ? deflate_stored(s, flush) :\n                 s.strategy === Z_HUFFMAN_ONLY ? deflate_huff(s, flush) :\n                 s.strategy === Z_RLE ? deflate_rle(s, flush) :\n                 configuration_table[s.level].func(s, flush);\n\n    if (bstate === BS_FINISH_STARTED || bstate === BS_FINISH_DONE) {\n      s.status = FINISH_STATE;\n    }\n    if (bstate === BS_NEED_MORE || bstate === BS_FINISH_STARTED) {\n      if (strm.avail_out === 0) {\n        s.last_flush = -1;\n        /* avoid BUF_ERROR next call, see above */\n      }\n      return Z_OK$3;\n      /* If flush != Z_NO_FLUSH && avail_out == 0, the next call\n       * of deflate should use the same flush parameter to make sure\n       * that the flush is complete. So we don't have to output an\n       * empty block here, this will be done at next call. This also\n       * ensures that for a very small output buffer, we emit at most\n       * one empty block.\n       */\n    }\n    if (bstate === BS_BLOCK_DONE) {\n      if (flush === Z_PARTIAL_FLUSH) {\n        _tr_align(s);\n      }\n      else if (flush !== Z_BLOCK$1) { /* FULL_FLUSH or SYNC_FLUSH */\n\n        _tr_stored_block(s, 0, 0, false);\n        /* For a full flush, this empty block will be recognized\n         * as a special marker by inflate_sync().\n         */\n        if (flush === Z_FULL_FLUSH$1) {\n          /*** CLEAR_HASH(s); ***/             /* forget history */\n          zero(s.head); // Fill with NIL (= 0);\n\n          if (s.lookahead === 0) {\n            s.strstart = 0;\n            s.block_start = 0;\n            s.insert = 0;\n          }\n        }\n      }\n      flush_pending(strm);\n      if (strm.avail_out === 0) {\n        s.last_flush = -1; /* avoid BUF_ERROR at next call, see above */\n        return Z_OK$3;\n      }\n    }\n  }\n\n  if (flush !== Z_FINISH$3) { return Z_OK$3; }\n  if (s.wrap <= 0) { return Z_STREAM_END$3; }\n\n  /* Write the trailer */\n  if (s.wrap === 2) {\n    put_byte(s, strm.adler & 0xff);\n    put_byte(s, (strm.adler >> 8) & 0xff);\n    put_byte(s, (strm.adler >> 16) & 0xff);\n    put_byte(s, (strm.adler >> 24) & 0xff);\n    put_byte(s, strm.total_in & 0xff);\n    put_byte(s, (strm.total_in >> 8) & 0xff);\n    put_byte(s, (strm.total_in >> 16) & 0xff);\n    put_byte(s, (strm.total_in >> 24) & 0xff);\n  }\n  else\n  {\n    putShortMSB(s, strm.adler >>> 16);\n    putShortMSB(s, strm.adler & 0xffff);\n  }\n\n  flush_pending(strm);\n  /* If avail_out is zero, the application will call deflate again\n   * to flush the rest.\n   */\n  if (s.wrap > 0) { s.wrap = -s.wrap; }\n  /* write the trailer only once! */\n  return s.pending !== 0 ? Z_OK$3 : Z_STREAM_END$3;\n};\n\n\nconst deflateEnd = (strm) => {\n\n  if (deflateStateCheck(strm)) {\n    return Z_STREAM_ERROR$2;\n  }\n\n  const status = strm.state.status;\n\n  strm.state = null;\n\n  return status === BUSY_STATE ? err(strm, Z_DATA_ERROR$2) : Z_OK$3;\n};\n\n\n/* =========================================================================\n * Initializes the compression dictionary from the given byte\n * sequence without producing any compressed output.\n */\nconst deflateSetDictionary = (strm, dictionary) => {\n\n  let dictLength = dictionary.length;\n\n  if (deflateStateCheck(strm)) {\n    return Z_STREAM_ERROR$2;\n  }\n\n  const s = strm.state;\n  const wrap = s.wrap;\n\n  if (wrap === 2 || (wrap === 1 && s.status !== INIT_STATE) || s.lookahead) {\n    return Z_STREAM_ERROR$2;\n  }\n\n  /* when using zlib wrappers, compute Adler-32 for provided dictionary */\n  if (wrap === 1) {\n    /* adler32(strm->adler, dictionary, dictLength); */\n    strm.adler = adler32_1(strm.adler, dictionary, dictLength, 0);\n  }\n\n  s.wrap = 0;   /* avoid computing Adler-32 in read_buf */\n\n  /* if dictionary would fill window, just replace the history */\n  if (dictLength >= s.w_size) {\n    if (wrap === 0) {            /* already empty otherwise */\n      /*** CLEAR_HASH(s); ***/\n      zero(s.head); // Fill with NIL (= 0);\n      s.strstart = 0;\n      s.block_start = 0;\n      s.insert = 0;\n    }\n    /* use the tail */\n    // dictionary = dictionary.slice(dictLength - s.w_size);\n    let tmpDict = new Uint8Array(s.w_size);\n    tmpDict.set(dictionary.subarray(dictLength - s.w_size, dictLength), 0);\n    dictionary = tmpDict;\n    dictLength = s.w_size;\n  }\n  /* insert dictionary into window and hash */\n  const avail = strm.avail_in;\n  const next = strm.next_in;\n  const input = strm.input;\n  strm.avail_in = dictLength;\n  strm.next_in = 0;\n  strm.input = dictionary;\n  fill_window(s);\n  while (s.lookahead >= MIN_MATCH) {\n    let str = s.strstart;\n    let n = s.lookahead - (MIN_MATCH - 1);\n    do {\n      /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */\n      s.ins_h = HASH(s, s.ins_h, s.window[str + MIN_MATCH - 1]);\n\n      s.prev[str & s.w_mask] = s.head[s.ins_h];\n\n      s.head[s.ins_h] = str;\n      str++;\n    } while (--n);\n    s.strstart = str;\n    s.lookahead = MIN_MATCH - 1;\n    fill_window(s);\n  }\n  s.strstart += s.lookahead;\n  s.block_start = s.strstart;\n  s.insert = s.lookahead;\n  s.lookahead = 0;\n  s.match_length = s.prev_length = MIN_MATCH - 1;\n  s.match_available = 0;\n  strm.next_in = next;\n  strm.input = input;\n  strm.avail_in = avail;\n  s.wrap = wrap;\n  return Z_OK$3;\n};\n\n\nvar deflateInit_1 = deflateInit;\nvar deflateInit2_1 = deflateInit2;\nvar deflateReset_1 = deflateReset;\nvar deflateResetKeep_1 = deflateResetKeep;\nvar deflateSetHeader_1 = deflateSetHeader;\nvar deflate_2$1 = deflate$2;\nvar deflateEnd_1 = deflateEnd;\nvar deflateSetDictionary_1 = deflateSetDictionary;\nvar deflateInfo = 'pako deflate (from Nodeca project)';\n\n/* Not implemented\nmodule.exports.deflateBound = deflateBound;\nmodule.exports.deflateCopy = deflateCopy;\nmodule.exports.deflateGetDictionary = deflateGetDictionary;\nmodule.exports.deflateParams = deflateParams;\nmodule.exports.deflatePending = deflatePending;\nmodule.exports.deflatePrime = deflatePrime;\nmodule.exports.deflateTune = deflateTune;\n*/\n\nvar deflate_1$2 = {\n\tdeflateInit: deflateInit_1,\n\tdeflateInit2: deflateInit2_1,\n\tdeflateReset: deflateReset_1,\n\tdeflateResetKeep: deflateResetKeep_1,\n\tdeflateSetHeader: deflateSetHeader_1,\n\tdeflate: deflate_2$1,\n\tdeflateEnd: deflateEnd_1,\n\tdeflateSetDictionary: deflateSetDictionary_1,\n\tdeflateInfo: deflateInfo\n};\n\nconst _has = (obj, key) => {\n  return Object.prototype.hasOwnProperty.call(obj, key);\n};\n\nvar assign = function (obj /*from1, from2, from3, ...*/) {\n  const sources = Array.prototype.slice.call(arguments, 1);\n  while (sources.length) {\n    const source = sources.shift();\n    if (!source) { continue; }\n\n    if (typeof source !== 'object') {\n      throw new TypeError(source + 'must be non-object');\n    }\n\n    for (const p in source) {\n      if (_has(source, p)) {\n        obj[p] = source[p];\n      }\n    }\n  }\n\n  return obj;\n};\n\n\n// Join array of chunks to single array.\nvar flattenChunks = (chunks) => {\n  // calculate data length\n  let len = 0;\n\n  for (let i = 0, l = chunks.length; i < l; i++) {\n    len += chunks[i].length;\n  }\n\n  // join chunks\n  const result = new Uint8Array(len);\n\n  for (let i = 0, pos = 0, l = chunks.length; i < l; i++) {\n    let chunk = chunks[i];\n    result.set(chunk, pos);\n    pos += chunk.length;\n  }\n\n  return result;\n};\n\nvar common = {\n\tassign: assign,\n\tflattenChunks: flattenChunks\n};\n\n// String encode/decode helpers\n\n\n// Quick check if we can use fast array to bin string conversion\n//\n// - apply(Array) can fail on Android 2.2\n// - apply(Uint8Array) can fail on iOS 5.1 Safari\n//\nlet STR_APPLY_UIA_OK = true;\n\ntry { String.fromCharCode.apply(null, new Uint8Array(1)); } catch (__) { STR_APPLY_UIA_OK = false; }\n\n\n// Table with utf8 lengths (calculated by first byte of sequence)\n// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS,\n// because max possible codepoint is 0x10ffff\nconst _utf8len = new Uint8Array(256);\nfor (let q = 0; q < 256; q++) {\n  _utf8len[q] = (q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1);\n}\n_utf8len[254] = _utf8len[254] = 1; // Invalid sequence start\n\n\n// convert string to array (typed, when possible)\nvar string2buf = (str) => {\n  if (typeof TextEncoder === 'function' && TextEncoder.prototype.encode) {\n    return new TextEncoder().encode(str);\n  }\n\n  let buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;\n\n  // count binary size\n  for (m_pos = 0; m_pos < str_len; m_pos++) {\n    c = str.charCodeAt(m_pos);\n    if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) {\n      c2 = str.charCodeAt(m_pos + 1);\n      if ((c2 & 0xfc00) === 0xdc00) {\n        c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);\n        m_pos++;\n      }\n    }\n    buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4;\n  }\n\n  // allocate buffer\n  buf = new Uint8Array(buf_len);\n\n  // convert\n  for (i = 0, m_pos = 0; i < buf_len; m_pos++) {\n    c = str.charCodeAt(m_pos);\n    if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) {\n      c2 = str.charCodeAt(m_pos + 1);\n      if ((c2 & 0xfc00) === 0xdc00) {\n        c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);\n        m_pos++;\n      }\n    }\n    if (c < 0x80) {\n      /* one byte */\n      buf[i++] = c;\n    } else if (c < 0x800) {\n      /* two bytes */\n      buf[i++] = 0xC0 | (c >>> 6);\n      buf[i++] = 0x80 | (c & 0x3f);\n    } else if (c < 0x10000) {\n      /* three bytes */\n      buf[i++] = 0xE0 | (c >>> 12);\n      buf[i++] = 0x80 | (c >>> 6 & 0x3f);\n      buf[i++] = 0x80 | (c & 0x3f);\n    } else {\n      /* four bytes */\n      buf[i++] = 0xf0 | (c >>> 18);\n      buf[i++] = 0x80 | (c >>> 12 & 0x3f);\n      buf[i++] = 0x80 | (c >>> 6 & 0x3f);\n      buf[i++] = 0x80 | (c & 0x3f);\n    }\n  }\n\n  return buf;\n};\n\n// Helper\nconst buf2binstring = (buf, len) => {\n  // On Chrome, the arguments in a function call that are allowed is `65534`.\n  // If the length of the buffer is smaller than that, we can use this optimization,\n  // otherwise we will take a slower path.\n  if (len < 65534) {\n    if (buf.subarray && STR_APPLY_UIA_OK) {\n      return String.fromCharCode.apply(null, buf.length === len ? buf : buf.subarray(0, len));\n    }\n  }\n\n  let result = '';\n  for (let i = 0; i < len; i++) {\n    result += String.fromCharCode(buf[i]);\n  }\n  return result;\n};\n\n\n// convert array to string\nvar buf2string = (buf, max) => {\n  const len = max || buf.length;\n\n  if (typeof TextDecoder === 'function' && TextDecoder.prototype.decode) {\n    return new TextDecoder().decode(buf.subarray(0, max));\n  }\n\n  let i, out;\n\n  // Reserve max possible length (2 words per char)\n  // NB: by unknown reasons, Array is significantly faster for\n  //     String.fromCharCode.apply than Uint16Array.\n  const utf16buf = new Array(len * 2);\n\n  for (out = 0, i = 0; i < len;) {\n    let c = buf[i++];\n    // quick process ascii\n    if (c < 0x80) { utf16buf[out++] = c; continue; }\n\n    let c_len = _utf8len[c];\n    // skip 5 & 6 byte codes\n    if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len - 1; continue; }\n\n    // apply mask on first byte\n    c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07;\n    // join the rest\n    while (c_len > 1 && i < len) {\n      c = (c << 6) | (buf[i++] & 0x3f);\n      c_len--;\n    }\n\n    // terminated by end of string?\n    if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; }\n\n    if (c < 0x10000) {\n      utf16buf[out++] = c;\n    } else {\n      c -= 0x10000;\n      utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff);\n      utf16buf[out++] = 0xdc00 | (c & 0x3ff);\n    }\n  }\n\n  return buf2binstring(utf16buf, out);\n};\n\n\n// Calculate max possible position in utf8 buffer,\n// that will not break sequence. If that's not possible\n// - (very small limits) return max size as is.\n//\n// buf[] - utf8 bytes array\n// max   - length limit (mandatory);\nvar utf8border = (buf, max) => {\n\n  max = max || buf.length;\n  if (max > buf.length) { max = buf.length; }\n\n  // go back from last position, until start of sequence found\n  let pos = max - 1;\n  while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; }\n\n  // Very small and broken sequence,\n  // return max, because we should return something anyway.\n  if (pos < 0) { return max; }\n\n  // If we came to start of buffer - that means buffer is too small,\n  // return max too.\n  if (pos === 0) { return max; }\n\n  return (pos + _utf8len[buf[pos]] > max) ? pos : max;\n};\n\nvar strings = {\n\tstring2buf: string2buf,\n\tbuf2string: buf2string,\n\tutf8border: utf8border\n};\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nfunction ZStream() {\n  /* next input byte */\n  this.input = null; // JS specific, because we have no pointers\n  this.next_in = 0;\n  /* number of bytes available at input */\n  this.avail_in = 0;\n  /* total number of input bytes read so far */\n  this.total_in = 0;\n  /* next output byte should be put there */\n  this.output = null; // JS specific, because we have no pointers\n  this.next_out = 0;\n  /* remaining free space at output */\n  this.avail_out = 0;\n  /* total number of bytes output so far */\n  this.total_out = 0;\n  /* last error message, NULL if no error */\n  this.msg = ''/*Z_NULL*/;\n  /* not visible by applications */\n  this.state = null;\n  /* best guess about the data type: binary or text */\n  this.data_type = 2/*Z_UNKNOWN*/;\n  /* adler32 value of the uncompressed data */\n  this.adler = 0;\n}\n\nvar zstream = ZStream;\n\nconst toString$1 = Object.prototype.toString;\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\nconst {\n  Z_NO_FLUSH: Z_NO_FLUSH$1, Z_SYNC_FLUSH, Z_FULL_FLUSH, Z_FINISH: Z_FINISH$2,\n  Z_OK: Z_OK$2, Z_STREAM_END: Z_STREAM_END$2,\n  Z_DEFAULT_COMPRESSION,\n  Z_DEFAULT_STRATEGY,\n  Z_DEFLATED: Z_DEFLATED$1\n} = constants$2;\n\n/* ===========================================================================*/\n\n\n/**\n * class Deflate\n *\n * Generic JS-style wrapper for zlib calls. If you don't need\n * streaming behaviour - use more simple functions: [[deflate]],\n * [[deflateRaw]] and [[gzip]].\n **/\n\n/* internal\n * Deflate.chunks -> Array\n *\n * Chunks of output data, if [[Deflate#onData]] not overridden.\n **/\n\n/**\n * Deflate.result -> Uint8Array\n *\n * Compressed result, generated by default [[Deflate#onData]]\n * and [[Deflate#onEnd]] handlers. Filled after you push last chunk\n * (call [[Deflate#push]] with `Z_FINISH` / `true` param).\n **/\n\n/**\n * Deflate.err -> Number\n *\n * Error code after deflate finished. 0 (Z_OK) on success.\n * You will not need it in real life, because deflate errors\n * are possible only on wrong options or bad `onData` / `onEnd`\n * custom handlers.\n **/\n\n/**\n * Deflate.msg -> String\n *\n * Error message, if [[Deflate.err]] != 0\n **/\n\n\n/**\n * new Deflate(options)\n * - options (Object): zlib deflate options.\n *\n * Creates new deflator instance with specified params. Throws exception\n * on bad params. Supported options:\n *\n * - `level`\n * - `windowBits`\n * - `memLevel`\n * - `strategy`\n * - `dictionary`\n *\n * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)\n * for more information on these.\n *\n * Additional options, for internal needs:\n *\n * - `chunkSize` - size of generated data chunks (16K by default)\n * - `raw` (Boolean) - do raw deflate\n * - `gzip` (Boolean) - create gzip wrapper\n * - `header` (Object) - custom header for gzip\n *   - `text` (Boolean) - true if compressed data believed to be text\n *   - `time` (Number) - modification time, unix timestamp\n *   - `os` (Number) - operation system code\n *   - `extra` (Array) - array of bytes with extra data (max 65536)\n *   - `name` (String) - file name (binary string)\n *   - `comment` (String) - comment (binary string)\n *   - `hcrc` (Boolean) - true if header crc should be added\n *\n * ##### Example:\n *\n * ```javascript\n * const pako = require('pako')\n *   , chunk1 = new Uint8Array([1,2,3,4,5,6,7,8,9])\n *   , chunk2 = new Uint8Array([10,11,12,13,14,15,16,17,18,19]);\n *\n * const deflate = new pako.Deflate({ level: 3});\n *\n * deflate.push(chunk1, false);\n * deflate.push(chunk2, true);  // true -> last chunk\n *\n * if (deflate.err) { throw new Error(deflate.err); }\n *\n * console.log(deflate.result);\n * ```\n **/\nfunction Deflate$1(options) {\n  this.options = common.assign({\n    level: Z_DEFAULT_COMPRESSION,\n    method: Z_DEFLATED$1,\n    chunkSize: 16384,\n    windowBits: 15,\n    memLevel: 8,\n    strategy: Z_DEFAULT_STRATEGY\n  }, options || {});\n\n  let opt = this.options;\n\n  if (opt.raw && (opt.windowBits > 0)) {\n    opt.windowBits = -opt.windowBits;\n  }\n\n  else if (opt.gzip && (opt.windowBits > 0) && (opt.windowBits < 16)) {\n    opt.windowBits += 16;\n  }\n\n  this.err    = 0;      // error code, if happens (0 = Z_OK)\n  this.msg    = '';     // error message\n  this.ended  = false;  // used to avoid multiple onEnd() calls\n  this.chunks = [];     // chunks of compressed data\n\n  this.strm = new zstream();\n  this.strm.avail_out = 0;\n\n  let status = deflate_1$2.deflateInit2(\n    this.strm,\n    opt.level,\n    opt.method,\n    opt.windowBits,\n    opt.memLevel,\n    opt.strategy\n  );\n\n  if (status !== Z_OK$2) {\n    throw new Error(messages[status]);\n  }\n\n  if (opt.header) {\n    deflate_1$2.deflateSetHeader(this.strm, opt.header);\n  }\n\n  if (opt.dictionary) {\n    let dict;\n    // Convert data if needed\n    if (typeof opt.dictionary === 'string') {\n      // If we need to compress text, change encoding to utf8.\n      dict = strings.string2buf(opt.dictionary);\n    } else if (toString$1.call(opt.dictionary) === '[object ArrayBuffer]') {\n      dict = new Uint8Array(opt.dictionary);\n    } else {\n      dict = opt.dictionary;\n    }\n\n    status = deflate_1$2.deflateSetDictionary(this.strm, dict);\n\n    if (status !== Z_OK$2) {\n      throw new Error(messages[status]);\n    }\n\n    this._dict_set = true;\n  }\n}\n\n/**\n * Deflate#push(data[, flush_mode]) -> Boolean\n * - data (Uint8Array|ArrayBuffer|String): input data. Strings will be\n *   converted to utf8 byte sequence.\n * - flush_mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.\n *   See constants. Skipped or `false` means Z_NO_FLUSH, `true` means Z_FINISH.\n *\n * Sends input data to deflate pipe, generating [[Deflate#onData]] calls with\n * new compressed chunks. Returns `true` on success. The last data block must\n * have `flush_mode` Z_FINISH (or `true`). That will flush internal pending\n * buffers and call [[Deflate#onEnd]].\n *\n * On fail call [[Deflate#onEnd]] with error code and return false.\n *\n * ##### Example\n *\n * ```javascript\n * push(chunk, false); // push one of data chunks\n * ...\n * push(chunk, true);  // push last chunk\n * ```\n **/\nDeflate$1.prototype.push = function (data, flush_mode) {\n  const strm = this.strm;\n  const chunkSize = this.options.chunkSize;\n  let status, _flush_mode;\n\n  if (this.ended) { return false; }\n\n  if (flush_mode === ~~flush_mode) _flush_mode = flush_mode;\n  else _flush_mode = flush_mode === true ? Z_FINISH$2 : Z_NO_FLUSH$1;\n\n  // Convert data if needed\n  if (typeof data === 'string') {\n    // If we need to compress text, change encoding to utf8.\n    strm.input = strings.string2buf(data);\n  } else if (toString$1.call(data) === '[object ArrayBuffer]') {\n    strm.input = new Uint8Array(data);\n  } else {\n    strm.input = data;\n  }\n\n  strm.next_in = 0;\n  strm.avail_in = strm.input.length;\n\n  for (;;) {\n    if (strm.avail_out === 0) {\n      strm.output = new Uint8Array(chunkSize);\n      strm.next_out = 0;\n      strm.avail_out = chunkSize;\n    }\n\n    // Make sure avail_out > 6 to avoid repeating markers\n    if ((_flush_mode === Z_SYNC_FLUSH || _flush_mode === Z_FULL_FLUSH) && strm.avail_out <= 6) {\n      this.onData(strm.output.subarray(0, strm.next_out));\n      strm.avail_out = 0;\n      continue;\n    }\n\n    status = deflate_1$2.deflate(strm, _flush_mode);\n\n    // Ended => flush and finish\n    if (status === Z_STREAM_END$2) {\n      if (strm.next_out > 0) {\n        this.onData(strm.output.subarray(0, strm.next_out));\n      }\n      status = deflate_1$2.deflateEnd(this.strm);\n      this.onEnd(status);\n      this.ended = true;\n      return status === Z_OK$2;\n    }\n\n    // Flush if out buffer full\n    if (strm.avail_out === 0) {\n      this.onData(strm.output);\n      continue;\n    }\n\n    // Flush if requested and has data\n    if (_flush_mode > 0 && strm.next_out > 0) {\n      this.onData(strm.output.subarray(0, strm.next_out));\n      strm.avail_out = 0;\n      continue;\n    }\n\n    if (strm.avail_in === 0) break;\n  }\n\n  return true;\n};\n\n\n/**\n * Deflate#onData(chunk) -> Void\n * - chunk (Uint8Array): output data.\n *\n * By default, stores data blocks in `chunks[]` property and glue\n * those in `onEnd`. Override this handler, if you need another behaviour.\n **/\nDeflate$1.prototype.onData = function (chunk) {\n  this.chunks.push(chunk);\n};\n\n\n/**\n * Deflate#onEnd(status) -> Void\n * - status (Number): deflate status. 0 (Z_OK) on success,\n *   other if not.\n *\n * Called once after you tell deflate that the input stream is\n * complete (Z_FINISH). By default - join collected chunks,\n * free memory and fill `results` / `err` properties.\n **/\nDeflate$1.prototype.onEnd = function (status) {\n  // On success - join\n  if (status === Z_OK$2) {\n    this.result = common.flattenChunks(this.chunks);\n  }\n  this.chunks = [];\n  this.err = status;\n  this.msg = this.strm.msg;\n};\n\n\n/**\n * deflate(data[, options]) -> Uint8Array\n * - data (Uint8Array|ArrayBuffer|String): input data to compress.\n * - options (Object): zlib deflate options.\n *\n * Compress `data` with deflate algorithm and `options`.\n *\n * Supported options are:\n *\n * - level\n * - windowBits\n * - memLevel\n * - strategy\n * - dictionary\n *\n * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)\n * for more information on these.\n *\n * Sugar (options):\n *\n * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify\n *   negative windowBits implicitly.\n *\n * ##### Example:\n *\n * ```javascript\n * const pako = require('pako')\n * const data = new Uint8Array([1,2,3,4,5,6,7,8,9]);\n *\n * console.log(pako.deflate(data));\n * ```\n **/\nfunction deflate$1(input, options) {\n  const deflator = new Deflate$1(options);\n\n  deflator.push(input, true);\n\n  // That will never happens, if you don't cheat with options :)\n  if (deflator.err) { throw deflator.msg || messages[deflator.err]; }\n\n  return deflator.result;\n}\n\n\n/**\n * deflateRaw(data[, options]) -> Uint8Array\n * - data (Uint8Array|ArrayBuffer|String): input data to compress.\n * - options (Object): zlib deflate options.\n *\n * The same as [[deflate]], but creates raw data, without wrapper\n * (header and adler32 crc).\n **/\nfunction deflateRaw$1(input, options) {\n  options = options || {};\n  options.raw = true;\n  return deflate$1(input, options);\n}\n\n\n/**\n * gzip(data[, options]) -> Uint8Array\n * - data (Uint8Array|ArrayBuffer|String): input data to compress.\n * - options (Object): zlib deflate options.\n *\n * The same as [[deflate]], but create gzip wrapper instead of\n * deflate one.\n **/\nfunction gzip$1(input, options) {\n  options = options || {};\n  options.gzip = true;\n  return deflate$1(input, options);\n}\n\n\nvar Deflate_1$1 = Deflate$1;\nvar deflate_2 = deflate$1;\nvar deflateRaw_1$1 = deflateRaw$1;\nvar gzip_1$1 = gzip$1;\nvar constants$1 = constants$2;\n\nvar deflate_1$1 = {\n\tDeflate: Deflate_1$1,\n\tdeflate: deflate_2,\n\tdeflateRaw: deflateRaw_1$1,\n\tgzip: gzip_1$1,\n\tconstants: constants$1\n};\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\n// See state defs from inflate.js\nconst BAD$1 = 16209;       /* got a data error -- remain here until reset */\nconst TYPE$1 = 16191;      /* i: waiting for type bits, including last-flag bit */\n\n/*\n   Decode literal, length, and distance codes and write out the resulting\n   literal and match bytes until either not enough input or output is\n   available, an end-of-block is encountered, or a data error is encountered.\n   When large enough input and output buffers are supplied to inflate(), for\n   example, a 16K input buffer and a 64K output buffer, more than 95% of the\n   inflate execution time is spent in this routine.\n\n   Entry assumptions:\n\n        state.mode === LEN\n        strm.avail_in >= 6\n        strm.avail_out >= 258\n        start >= strm.avail_out\n        state.bits < 8\n\n   On return, state.mode is one of:\n\n        LEN -- ran out of enough output space or enough available input\n        TYPE -- reached end of block code, inflate() to interpret next block\n        BAD -- error in block data\n\n   Notes:\n\n    - The maximum input bits used by a length/distance pair is 15 bits for the\n      length code, 5 bits for the length extra, 15 bits for the distance code,\n      and 13 bits for the distance extra.  This totals 48 bits, or six bytes.\n      Therefore if strm.avail_in >= 6, then there is enough input to avoid\n      checking for available input while decoding.\n\n    - The maximum bytes that a single length/distance pair can output is 258\n      bytes, which is the maximum length that can be coded.  inflate_fast()\n      requires strm.avail_out >= 258 for each loop to avoid checking for\n      output space.\n */\nvar inffast = function inflate_fast(strm, start) {\n  let _in;                    /* local strm.input */\n  let last;                   /* have enough input while in < last */\n  let _out;                   /* local strm.output */\n  let beg;                    /* inflate()'s initial strm.output */\n  let end;                    /* while out < end, enough space available */\n//#ifdef INFLATE_STRICT\n  let dmax;                   /* maximum distance from zlib header */\n//#endif\n  let wsize;                  /* window size or zero if not using window */\n  let whave;                  /* valid bytes in the window */\n  let wnext;                  /* window write index */\n  // Use `s_window` instead `window`, avoid conflict with instrumentation tools\n  let s_window;               /* allocated sliding window, if wsize != 0 */\n  let hold;                   /* local strm.hold */\n  let bits;                   /* local strm.bits */\n  let lcode;                  /* local strm.lencode */\n  let dcode;                  /* local strm.distcode */\n  let lmask;                  /* mask for first level of length codes */\n  let dmask;                  /* mask for first level of distance codes */\n  let here;                   /* retrieved table entry */\n  let op;                     /* code bits, operation, extra bits, or */\n                              /*  window position, window bytes to copy */\n  let len;                    /* match length, unused bytes */\n  let dist;                   /* match distance */\n  let from;                   /* where to copy match from */\n  let from_source;\n\n\n  let input, output; // JS specific, because we have no pointers\n\n  /* copy state to local variables */\n  const state = strm.state;\n  //here = state.here;\n  _in = strm.next_in;\n  input = strm.input;\n  last = _in + (strm.avail_in - 5);\n  _out = strm.next_out;\n  output = strm.output;\n  beg = _out - (start - strm.avail_out);\n  end = _out + (strm.avail_out - 257);\n//#ifdef INFLATE_STRICT\n  dmax = state.dmax;\n//#endif\n  wsize = state.wsize;\n  whave = state.whave;\n  wnext = state.wnext;\n  s_window = state.window;\n  hold = state.hold;\n  bits = state.bits;\n  lcode = state.lencode;\n  dcode = state.distcode;\n  lmask = (1 << state.lenbits) - 1;\n  dmask = (1 << state.distbits) - 1;\n\n\n  /* decode literals and length/distances until end-of-block or not enough\n     input data or output space */\n\n  top:\n  do {\n    if (bits < 15) {\n      hold += input[_in++] << bits;\n      bits += 8;\n      hold += input[_in++] << bits;\n      bits += 8;\n    }\n\n    here = lcode[hold & lmask];\n\n    dolen:\n    for (;;) { // Goto emulation\n      op = here >>> 24/*here.bits*/;\n      hold >>>= op;\n      bits -= op;\n      op = (here >>> 16) & 0xff/*here.op*/;\n      if (op === 0) {                          /* literal */\n        //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?\n        //        \"inflate:         literal '%c'\\n\" :\n        //        \"inflate:         literal 0x%02x\\n\", here.val));\n        output[_out++] = here & 0xffff/*here.val*/;\n      }\n      else if (op & 16) {                     /* length base */\n        len = here & 0xffff/*here.val*/;\n        op &= 15;                           /* number of extra bits */\n        if (op) {\n          if (bits < op) {\n            hold += input[_in++] << bits;\n            bits += 8;\n          }\n          len += hold & ((1 << op) - 1);\n          hold >>>= op;\n          bits -= op;\n        }\n        //Tracevv((stderr, \"inflate:         length %u\\n\", len));\n        if (bits < 15) {\n          hold += input[_in++] << bits;\n          bits += 8;\n          hold += input[_in++] << bits;\n          bits += 8;\n        }\n        here = dcode[hold & dmask];\n\n        dodist:\n        for (;;) { // goto emulation\n          op = here >>> 24/*here.bits*/;\n          hold >>>= op;\n          bits -= op;\n          op = (here >>> 16) & 0xff/*here.op*/;\n\n          if (op & 16) {                      /* distance base */\n            dist = here & 0xffff/*here.val*/;\n            op &= 15;                       /* number of extra bits */\n            if (bits < op) {\n              hold += input[_in++] << bits;\n              bits += 8;\n              if (bits < op) {\n                hold += input[_in++] << bits;\n                bits += 8;\n              }\n            }\n            dist += hold & ((1 << op) - 1);\n//#ifdef INFLATE_STRICT\n            if (dist > dmax) {\n              strm.msg = 'invalid distance too far back';\n              state.mode = BAD$1;\n              break top;\n            }\n//#endif\n            hold >>>= op;\n            bits -= op;\n            //Tracevv((stderr, \"inflate:         distance %u\\n\", dist));\n            op = _out - beg;                /* max distance in output */\n            if (dist > op) {                /* see if copy from window */\n              op = dist - op;               /* distance back in window */\n              if (op > whave) {\n                if (state.sane) {\n                  strm.msg = 'invalid distance too far back';\n                  state.mode = BAD$1;\n                  break top;\n                }\n\n// (!) This block is disabled in zlib defaults,\n// don't enable it for binary compatibility\n//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR\n//                if (len <= op - whave) {\n//                  do {\n//                    output[_out++] = 0;\n//                  } while (--len);\n//                  continue top;\n//                }\n//                len -= op - whave;\n//                do {\n//                  output[_out++] = 0;\n//                } while (--op > whave);\n//                if (op === 0) {\n//                  from = _out - dist;\n//                  do {\n//                    output[_out++] = output[from++];\n//                  } while (--len);\n//                  continue top;\n//                }\n//#endif\n              }\n              from = 0; // window index\n              from_source = s_window;\n              if (wnext === 0) {           /* very common case */\n                from += wsize - op;\n                if (op < len) {         /* some from window */\n                  len -= op;\n                  do {\n                    output[_out++] = s_window[from++];\n                  } while (--op);\n                  from = _out - dist;  /* rest from output */\n                  from_source = output;\n                }\n              }\n              else if (wnext < op) {      /* wrap around window */\n                from += wsize + wnext - op;\n                op -= wnext;\n                if (op < len) {         /* some from end of window */\n                  len -= op;\n                  do {\n                    output[_out++] = s_window[from++];\n                  } while (--op);\n                  from = 0;\n                  if (wnext < len) {  /* some from start of window */\n                    op = wnext;\n                    len -= op;\n                    do {\n                      output[_out++] = s_window[from++];\n                    } while (--op);\n                    from = _out - dist;      /* rest from output */\n                    from_source = output;\n                  }\n                }\n              }\n              else {                      /* contiguous in window */\n                from += wnext - op;\n                if (op < len) {         /* some from window */\n                  len -= op;\n                  do {\n                    output[_out++] = s_window[from++];\n                  } while (--op);\n                  from = _out - dist;  /* rest from output */\n                  from_source = output;\n                }\n              }\n              while (len > 2) {\n                output[_out++] = from_source[from++];\n                output[_out++] = from_source[from++];\n                output[_out++] = from_source[from++];\n                len -= 3;\n              }\n              if (len) {\n                output[_out++] = from_source[from++];\n                if (len > 1) {\n                  output[_out++] = from_source[from++];\n                }\n              }\n            }\n            else {\n              from = _out - dist;          /* copy direct from output */\n              do {                        /* minimum length is three */\n                output[_out++] = output[from++];\n                output[_out++] = output[from++];\n                output[_out++] = output[from++];\n                len -= 3;\n              } while (len > 2);\n              if (len) {\n                output[_out++] = output[from++];\n                if (len > 1) {\n                  output[_out++] = output[from++];\n                }\n              }\n            }\n          }\n          else if ((op & 64) === 0) {          /* 2nd level distance code */\n            here = dcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];\n            continue dodist;\n          }\n          else {\n            strm.msg = 'invalid distance code';\n            state.mode = BAD$1;\n            break top;\n          }\n\n          break; // need to emulate goto via \"continue\"\n        }\n      }\n      else if ((op & 64) === 0) {              /* 2nd level length code */\n        here = lcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];\n        continue dolen;\n      }\n      else if (op & 32) {                     /* end-of-block */\n        //Tracevv((stderr, \"inflate:         end of block\\n\"));\n        state.mode = TYPE$1;\n        break top;\n      }\n      else {\n        strm.msg = 'invalid literal/length code';\n        state.mode = BAD$1;\n        break top;\n      }\n\n      break; // need to emulate goto via \"continue\"\n    }\n  } while (_in < last && _out < end);\n\n  /* return unused bytes (on entry, bits < 8, so in won't go too far back) */\n  len = bits >> 3;\n  _in -= len;\n  bits -= len << 3;\n  hold &= (1 << bits) - 1;\n\n  /* update state and return */\n  strm.next_in = _in;\n  strm.next_out = _out;\n  strm.avail_in = (_in < last ? 5 + (last - _in) : 5 - (_in - last));\n  strm.avail_out = (_out < end ? 257 + (end - _out) : 257 - (_out - end));\n  state.hold = hold;\n  state.bits = bits;\n  return;\n};\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nconst MAXBITS = 15;\nconst ENOUGH_LENS$1 = 852;\nconst ENOUGH_DISTS$1 = 592;\n//const ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS);\n\nconst CODES$1 = 0;\nconst LENS$1 = 1;\nconst DISTS$1 = 2;\n\nconst lbase = new Uint16Array([ /* Length codes 257..285 base */\n  3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,\n  35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0\n]);\n\nconst lext = new Uint8Array([ /* Length codes 257..285 extra */\n  16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,\n  19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78\n]);\n\nconst dbase = new Uint16Array([ /* Distance codes 0..29 base */\n  1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,\n  257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,\n  8193, 12289, 16385, 24577, 0, 0\n]);\n\nconst dext = new Uint8Array([ /* Distance codes 0..29 extra */\n  16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,\n  23, 23, 24, 24, 25, 25, 26, 26, 27, 27,\n  28, 28, 29, 29, 64, 64\n]);\n\nconst inflate_table = (type, lens, lens_index, codes, table, table_index, work, opts) =>\n{\n  const bits = opts.bits;\n      //here = opts.here; /* table entry for duplication */\n\n  let len = 0;               /* a code's length in bits */\n  let sym = 0;               /* index of code symbols */\n  let min = 0, max = 0;          /* minimum and maximum code lengths */\n  let root = 0;              /* number of index bits for root table */\n  let curr = 0;              /* number of index bits for current table */\n  let drop = 0;              /* code bits to drop for sub-table */\n  let left = 0;                   /* number of prefix codes available */\n  let used = 0;              /* code entries in table used */\n  let huff = 0;              /* Huffman code */\n  let incr;              /* for incrementing code, index */\n  let fill;              /* index for replicating entries */\n  let low;               /* low bits for current root entry */\n  let mask;              /* mask for low root bits */\n  let next;             /* next available space in table */\n  let base = null;     /* base value table to use */\n//  let shoextra;    /* extra bits table to use */\n  let match;                  /* use base and extra for symbol >= match */\n  const count = new Uint16Array(MAXBITS + 1); //[MAXBITS+1];    /* number of codes of each length */\n  const offs = new Uint16Array(MAXBITS + 1); //[MAXBITS+1];     /* offsets in table for each length */\n  let extra = null;\n\n  let here_bits, here_op, here_val;\n\n  /*\n   Process a set of code lengths to create a canonical Huffman code.  The\n   code lengths are lens[0..codes-1].  Each length corresponds to the\n   symbols 0..codes-1.  The Huffman code is generated by first sorting the\n   symbols by length from short to long, and retaining the symbol order\n   for codes with equal lengths.  Then the code starts with all zero bits\n   for the first code of the shortest length, and the codes are integer\n   increments for the same length, and zeros are appended as the length\n   increases.  For the deflate format, these bits are stored backwards\n   from their more natural integer increment ordering, and so when the\n   decoding tables are built in the large loop below, the integer codes\n   are incremented backwards.\n\n   This routine assumes, but does not check, that all of the entries in\n   lens[] are in the range 0..MAXBITS.  The caller must assure this.\n   1..MAXBITS is interpreted as that code length.  zero means that that\n   symbol does not occur in this code.\n\n   The codes are sorted by computing a count of codes for each length,\n   creating from that a table of starting indices for each length in the\n   sorted table, and then entering the symbols in order in the sorted\n   table.  The sorted table is work[], with that space being provided by\n   the caller.\n\n   The length counts are used for other purposes as well, i.e. finding\n   the minimum and maximum length codes, determining if there are any\n   codes at all, checking for a valid set of lengths, and looking ahead\n   at length counts to determine sub-table sizes when building the\n   decoding tables.\n   */\n\n  /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */\n  for (len = 0; len <= MAXBITS; len++) {\n    count[len] = 0;\n  }\n  for (sym = 0; sym < codes; sym++) {\n    count[lens[lens_index + sym]]++;\n  }\n\n  /* bound code lengths, force root to be within code lengths */\n  root = bits;\n  for (max = MAXBITS; max >= 1; max--) {\n    if (count[max] !== 0) { break; }\n  }\n  if (root > max) {\n    root = max;\n  }\n  if (max === 0) {                     /* no symbols to code at all */\n    //table.op[opts.table_index] = 64;  //here.op = (var char)64;    /* invalid code marker */\n    //table.bits[opts.table_index] = 1;   //here.bits = (var char)1;\n    //table.val[opts.table_index++] = 0;   //here.val = (var short)0;\n    table[table_index++] = (1 << 24) | (64 << 16) | 0;\n\n\n    //table.op[opts.table_index] = 64;\n    //table.bits[opts.table_index] = 1;\n    //table.val[opts.table_index++] = 0;\n    table[table_index++] = (1 << 24) | (64 << 16) | 0;\n\n    opts.bits = 1;\n    return 0;     /* no symbols, but wait for decoding to report error */\n  }\n  for (min = 1; min < max; min++) {\n    if (count[min] !== 0) { break; }\n  }\n  if (root < min) {\n    root = min;\n  }\n\n  /* check for an over-subscribed or incomplete set of lengths */\n  left = 1;\n  for (len = 1; len <= MAXBITS; len++) {\n    left <<= 1;\n    left -= count[len];\n    if (left < 0) {\n      return -1;\n    }        /* over-subscribed */\n  }\n  if (left > 0 && (type === CODES$1 || max !== 1)) {\n    return -1;                      /* incomplete set */\n  }\n\n  /* generate offsets into symbol table for each length for sorting */\n  offs[1] = 0;\n  for (len = 1; len < MAXBITS; len++) {\n    offs[len + 1] = offs[len] + count[len];\n  }\n\n  /* sort symbols by length, by symbol order within each length */\n  for (sym = 0; sym < codes; sym++) {\n    if (lens[lens_index + sym] !== 0) {\n      work[offs[lens[lens_index + sym]]++] = sym;\n    }\n  }\n\n  /*\n   Create and fill in decoding tables.  In this loop, the table being\n   filled is at next and has curr index bits.  The code being used is huff\n   with length len.  That code is converted to an index by dropping drop\n   bits off of the bottom.  For codes where len is less than drop + curr,\n   those top drop + curr - len bits are incremented through all values to\n   fill the table with replicated entries.\n\n   root is the number of index bits for the root table.  When len exceeds\n   root, sub-tables are created pointed to by the root entry with an index\n   of the low root bits of huff.  This is saved in low to check for when a\n   new sub-table should be started.  drop is zero when the root table is\n   being filled, and drop is root when sub-tables are being filled.\n\n   When a new sub-table is needed, it is necessary to look ahead in the\n   code lengths to determine what size sub-table is needed.  The length\n   counts are used for this, and so count[] is decremented as codes are\n   entered in the tables.\n\n   used keeps track of how many table entries have been allocated from the\n   provided *table space.  It is checked for LENS and DIST tables against\n   the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in\n   the initial root table size constants.  See the comments in inftrees.h\n   for more information.\n\n   sym increments through all symbols, and the loop terminates when\n   all codes of length max, i.e. all codes, have been processed.  This\n   routine permits incomplete codes, so another loop after this one fills\n   in the rest of the decoding tables with invalid code markers.\n   */\n\n  /* set up for code type */\n  // poor man optimization - use if-else instead of switch,\n  // to avoid deopts in old v8\n  if (type === CODES$1) {\n    base = extra = work;    /* dummy value--not used */\n    match = 20;\n\n  } else if (type === LENS$1) {\n    base = lbase;\n    extra = lext;\n    match = 257;\n\n  } else {                    /* DISTS */\n    base = dbase;\n    extra = dext;\n    match = 0;\n  }\n\n  /* initialize opts for loop */\n  huff = 0;                   /* starting code */\n  sym = 0;                    /* starting code symbol */\n  len = min;                  /* starting code length */\n  next = table_index;              /* current table to fill in */\n  curr = root;                /* current table index bits */\n  drop = 0;                   /* current bits to drop from code for index */\n  low = -1;                   /* trigger new sub-table when len > root */\n  used = 1 << root;          /* use root table entries */\n  mask = used - 1;            /* mask for comparing low */\n\n  /* check available table space */\n  if ((type === LENS$1 && used > ENOUGH_LENS$1) ||\n    (type === DISTS$1 && used > ENOUGH_DISTS$1)) {\n    return 1;\n  }\n\n  /* process all codes and make table entries */\n  for (;;) {\n    /* create table entry */\n    here_bits = len - drop;\n    if (work[sym] + 1 < match) {\n      here_op = 0;\n      here_val = work[sym];\n    }\n    else if (work[sym] >= match) {\n      here_op = extra[work[sym] - match];\n      here_val = base[work[sym] - match];\n    }\n    else {\n      here_op = 32 + 64;         /* end of block */\n      here_val = 0;\n    }\n\n    /* replicate for those indices with low len bits equal to huff */\n    incr = 1 << (len - drop);\n    fill = 1 << curr;\n    min = fill;                 /* save offset to next table */\n    do {\n      fill -= incr;\n      table[next + (huff >> drop) + fill] = (here_bits << 24) | (here_op << 16) | here_val |0;\n    } while (fill !== 0);\n\n    /* backwards increment the len-bit code huff */\n    incr = 1 << (len - 1);\n    while (huff & incr) {\n      incr >>= 1;\n    }\n    if (incr !== 0) {\n      huff &= incr - 1;\n      huff += incr;\n    } else {\n      huff = 0;\n    }\n\n    /* go to next symbol, update count, len */\n    sym++;\n    if (--count[len] === 0) {\n      if (len === max) { break; }\n      len = lens[lens_index + work[sym]];\n    }\n\n    /* create new sub-table if needed */\n    if (len > root && (huff & mask) !== low) {\n      /* if first time, transition to sub-tables */\n      if (drop === 0) {\n        drop = root;\n      }\n\n      /* increment past last table */\n      next += min;            /* here min is 1 << curr */\n\n      /* determine length of next table */\n      curr = len - drop;\n      left = 1 << curr;\n      while (curr + drop < max) {\n        left -= count[curr + drop];\n        if (left <= 0) { break; }\n        curr++;\n        left <<= 1;\n      }\n\n      /* check for enough space */\n      used += 1 << curr;\n      if ((type === LENS$1 && used > ENOUGH_LENS$1) ||\n        (type === DISTS$1 && used > ENOUGH_DISTS$1)) {\n        return 1;\n      }\n\n      /* point entry in root table to sub-table */\n      low = huff & mask;\n      /*table.op[low] = curr;\n      table.bits[low] = root;\n      table.val[low] = next - opts.table_index;*/\n      table[low] = (root << 24) | (curr << 16) | (next - table_index) |0;\n    }\n  }\n\n  /* fill in remaining table entry if code is incomplete (guaranteed to have\n   at most one remaining entry, since if the code is incomplete, the\n   maximum code length that was allowed to get this far is one bit) */\n  if (huff !== 0) {\n    //table.op[next + huff] = 64;            /* invalid code marker */\n    //table.bits[next + huff] = len - drop;\n    //table.val[next + huff] = 0;\n    table[next + huff] = ((len - drop) << 24) | (64 << 16) |0;\n  }\n\n  /* set return parameters */\n  //opts.table_index += used;\n  opts.bits = root;\n  return 0;\n};\n\n\nvar inftrees = inflate_table;\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\n\n\n\n\n\nconst CODES = 0;\nconst LENS = 1;\nconst DISTS = 2;\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\nconst {\n  Z_FINISH: Z_FINISH$1, Z_BLOCK, Z_TREES,\n  Z_OK: Z_OK$1, Z_STREAM_END: Z_STREAM_END$1, Z_NEED_DICT: Z_NEED_DICT$1, Z_STREAM_ERROR: Z_STREAM_ERROR$1, Z_DATA_ERROR: Z_DATA_ERROR$1, Z_MEM_ERROR: Z_MEM_ERROR$1, Z_BUF_ERROR,\n  Z_DEFLATED\n} = constants$2;\n\n\n/* STATES ====================================================================*/\n/* ===========================================================================*/\n\n\nconst    HEAD = 16180;       /* i: waiting for magic header */\nconst    FLAGS = 16181;      /* i: waiting for method and flags (gzip) */\nconst    TIME = 16182;       /* i: waiting for modification time (gzip) */\nconst    OS = 16183;         /* i: waiting for extra flags and operating system (gzip) */\nconst    EXLEN = 16184;      /* i: waiting for extra length (gzip) */\nconst    EXTRA = 16185;      /* i: waiting for extra bytes (gzip) */\nconst    NAME = 16186;       /* i: waiting for end of file name (gzip) */\nconst    COMMENT = 16187;    /* i: waiting for end of comment (gzip) */\nconst    HCRC = 16188;       /* i: waiting for header crc (gzip) */\nconst    DICTID = 16189;    /* i: waiting for dictionary check value */\nconst    DICT = 16190;      /* waiting for inflateSetDictionary() call */\nconst        TYPE = 16191;      /* i: waiting for type bits, including last-flag bit */\nconst        TYPEDO = 16192;    /* i: same, but skip check to exit inflate on new block */\nconst        STORED = 16193;    /* i: waiting for stored size (length and complement) */\nconst        COPY_ = 16194;     /* i/o: same as COPY below, but only first time in */\nconst        COPY = 16195;      /* i/o: waiting for input or output to copy stored block */\nconst        TABLE = 16196;     /* i: waiting for dynamic block table lengths */\nconst        LENLENS = 16197;   /* i: waiting for code length code lengths */\nconst        CODELENS = 16198;  /* i: waiting for length/lit and distance code lengths */\nconst            LEN_ = 16199;      /* i: same as LEN below, but only first time in */\nconst            LEN = 16200;       /* i: waiting for length/lit/eob code */\nconst            LENEXT = 16201;    /* i: waiting for length extra bits */\nconst            DIST = 16202;      /* i: waiting for distance code */\nconst            DISTEXT = 16203;   /* i: waiting for distance extra bits */\nconst            MATCH = 16204;     /* o: waiting for output space to copy string */\nconst            LIT = 16205;       /* o: waiting for output space to write literal */\nconst    CHECK = 16206;     /* i: waiting for 32-bit check value */\nconst    LENGTH = 16207;    /* i: waiting for 32-bit length (gzip) */\nconst    DONE = 16208;      /* finished check, done -- remain here until reset */\nconst    BAD = 16209;       /* got a data error -- remain here until reset */\nconst    MEM = 16210;       /* got an inflate() memory error -- remain here until reset */\nconst    SYNC = 16211;      /* looking for synchronization bytes to restart inflate() */\n\n/* ===========================================================================*/\n\n\n\nconst ENOUGH_LENS = 852;\nconst ENOUGH_DISTS = 592;\n//const ENOUGH =  (ENOUGH_LENS+ENOUGH_DISTS);\n\nconst MAX_WBITS = 15;\n/* 32K LZ77 window */\nconst DEF_WBITS = MAX_WBITS;\n\n\nconst zswap32 = (q) => {\n\n  return  (((q >>> 24) & 0xff) +\n          ((q >>> 8) & 0xff00) +\n          ((q & 0xff00) << 8) +\n          ((q & 0xff) << 24));\n};\n\n\nfunction InflateState() {\n  this.strm = null;           /* pointer back to this zlib stream */\n  this.mode = 0;              /* current inflate mode */\n  this.last = false;          /* true if processing last block */\n  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip,\n                                 bit 2 true to validate check value */\n  this.havedict = false;      /* true if dictionary provided */\n  this.flags = 0;             /* gzip header method and flags (0 if zlib), or\n                                 -1 if raw or no header yet */\n  this.dmax = 0;              /* zlib header max distance (INFLATE_STRICT) */\n  this.check = 0;             /* protected copy of check value */\n  this.total = 0;             /* protected copy of output count */\n  // TODO: may be {}\n  this.head = null;           /* where to save gzip header information */\n\n  /* sliding window */\n  this.wbits = 0;             /* log base 2 of requested window size */\n  this.wsize = 0;             /* window size or zero if not using window */\n  this.whave = 0;             /* valid bytes in the window */\n  this.wnext = 0;             /* window write index */\n  this.window = null;         /* allocated sliding window, if needed */\n\n  /* bit accumulator */\n  this.hold = 0;              /* input bit accumulator */\n  this.bits = 0;              /* number of bits in \"in\" */\n\n  /* for string and stored block copying */\n  this.length = 0;            /* literal or length of data to copy */\n  this.offset = 0;            /* distance back to copy string from */\n\n  /* for table and code decoding */\n  this.extra = 0;             /* extra bits needed */\n\n  /* fixed and dynamic code tables */\n  this.lencode = null;          /* starting table for length/literal codes */\n  this.distcode = null;         /* starting table for distance codes */\n  this.lenbits = 0;           /* index bits for lencode */\n  this.distbits = 0;          /* index bits for distcode */\n\n  /* dynamic table building */\n  this.ncode = 0;             /* number of code length code lengths */\n  this.nlen = 0;              /* number of length code lengths */\n  this.ndist = 0;             /* number of distance code lengths */\n  this.have = 0;              /* number of code lengths in lens[] */\n  this.next = null;              /* next available space in codes[] */\n\n  this.lens = new Uint16Array(320); /* temporary storage for code lengths */\n  this.work = new Uint16Array(288); /* work area for code table building */\n\n  /*\n   because we don't have pointers in js, we use lencode and distcode directly\n   as buffers so we don't need codes\n  */\n  //this.codes = new Int32Array(ENOUGH);       /* space for code tables */\n  this.lendyn = null;              /* dynamic table for length/literal codes (JS specific) */\n  this.distdyn = null;             /* dynamic table for distance codes (JS specific) */\n  this.sane = 0;                   /* if false, allow invalid distance too far */\n  this.back = 0;                   /* bits back of last unprocessed length/lit */\n  this.was = 0;                    /* initial length of match */\n}\n\n\nconst inflateStateCheck = (strm) => {\n\n  if (!strm) {\n    return 1;\n  }\n  const state = strm.state;\n  if (!state || state.strm !== strm ||\n    state.mode < HEAD || state.mode > SYNC) {\n    return 1;\n  }\n  return 0;\n};\n\n\nconst inflateResetKeep = (strm) => {\n\n  if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1; }\n  const state = strm.state;\n  strm.total_in = strm.total_out = state.total = 0;\n  strm.msg = ''; /*Z_NULL*/\n  if (state.wrap) {       /* to support ill-conceived Java test suite */\n    strm.adler = state.wrap & 1;\n  }\n  state.mode = HEAD;\n  state.last = 0;\n  state.havedict = 0;\n  state.flags = -1;\n  state.dmax = 32768;\n  state.head = null/*Z_NULL*/;\n  state.hold = 0;\n  state.bits = 0;\n  //state.lencode = state.distcode = state.next = state.codes;\n  state.lencode = state.lendyn = new Int32Array(ENOUGH_LENS);\n  state.distcode = state.distdyn = new Int32Array(ENOUGH_DISTS);\n\n  state.sane = 1;\n  state.back = -1;\n  //Tracev((stderr, \"inflate: reset\\n\"));\n  return Z_OK$1;\n};\n\n\nconst inflateReset = (strm) => {\n\n  if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1; }\n  const state = strm.state;\n  state.wsize = 0;\n  state.whave = 0;\n  state.wnext = 0;\n  return inflateResetKeep(strm);\n\n};\n\n\nconst inflateReset2 = (strm, windowBits) => {\n  let wrap;\n\n  /* get the state */\n  if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1; }\n  const state = strm.state;\n\n  /* extract wrap request from windowBits parameter */\n  if (windowBits < 0) {\n    wrap = 0;\n    windowBits = -windowBits;\n  }\n  else {\n    wrap = (windowBits >> 4) + 5;\n    if (windowBits < 48) {\n      windowBits &= 15;\n    }\n  }\n\n  /* set number of window bits, free window if different */\n  if (windowBits && (windowBits < 8 || windowBits > 15)) {\n    return Z_STREAM_ERROR$1;\n  }\n  if (state.window !== null && state.wbits !== windowBits) {\n    state.window = null;\n  }\n\n  /* update state and reset the rest of it */\n  state.wrap = wrap;\n  state.wbits = windowBits;\n  return inflateReset(strm);\n};\n\n\nconst inflateInit2 = (strm, windowBits) => {\n\n  if (!strm) { return Z_STREAM_ERROR$1; }\n  //strm.msg = Z_NULL;                 /* in case we return an error */\n\n  const state = new InflateState();\n\n  //if (state === Z_NULL) return Z_MEM_ERROR;\n  //Tracev((stderr, \"inflate: allocated\\n\"));\n  strm.state = state;\n  state.strm = strm;\n  state.window = null/*Z_NULL*/;\n  state.mode = HEAD;     /* to pass state test in inflateReset2() */\n  const ret = inflateReset2(strm, windowBits);\n  if (ret !== Z_OK$1) {\n    strm.state = null/*Z_NULL*/;\n  }\n  return ret;\n};\n\n\nconst inflateInit = (strm) => {\n\n  return inflateInit2(strm, DEF_WBITS);\n};\n\n\n/*\n Return state with length and distance decoding tables and index sizes set to\n fixed code decoding.  Normally this returns fixed tables from inffixed.h.\n If BUILDFIXED is defined, then instead this routine builds the tables the\n first time it's called, and returns those tables the first time and\n thereafter.  This reduces the size of the code by about 2K bytes, in\n exchange for a little execution time.  However, BUILDFIXED should not be\n used for threaded applications, since the rewriting of the tables and virgin\n may not be thread-safe.\n */\nlet virgin = true;\n\nlet lenfix, distfix; // We have no pointers in JS, so keep tables separate\n\n\nconst fixedtables = (state) => {\n\n  /* build fixed huffman tables if first call (may not be thread safe) */\n  if (virgin) {\n    lenfix = new Int32Array(512);\n    distfix = new Int32Array(32);\n\n    /* literal/length table */\n    let sym = 0;\n    while (sym < 144) { state.lens[sym++] = 8; }\n    while (sym < 256) { state.lens[sym++] = 9; }\n    while (sym < 280) { state.lens[sym++] = 7; }\n    while (sym < 288) { state.lens[sym++] = 8; }\n\n    inftrees(LENS,  state.lens, 0, 288, lenfix,   0, state.work, { bits: 9 });\n\n    /* distance table */\n    sym = 0;\n    while (sym < 32) { state.lens[sym++] = 5; }\n\n    inftrees(DISTS, state.lens, 0, 32,   distfix, 0, state.work, { bits: 5 });\n\n    /* do this just once */\n    virgin = false;\n  }\n\n  state.lencode = lenfix;\n  state.lenbits = 9;\n  state.distcode = distfix;\n  state.distbits = 5;\n};\n\n\n/*\n Update the window with the last wsize (normally 32K) bytes written before\n returning.  If window does not exist yet, create it.  This is only called\n when a window is already in use, or when output has been written during this\n inflate call, but the end of the deflate stream has not been reached yet.\n It is also called to create a window for dictionary data when a dictionary\n is loaded.\n\n Providing output buffers larger than 32K to inflate() should provide a speed\n advantage, since only the last 32K of output is copied to the sliding window\n upon return from inflate(), and since all distances after the first 32K of\n output will fall in the output data, making match copies simpler and faster.\n The advantage may be dependent on the size of the processor's data caches.\n */\nconst updatewindow = (strm, src, end, copy) => {\n\n  let dist;\n  const state = strm.state;\n\n  /* if it hasn't been done already, allocate space for the window */\n  if (state.window === null) {\n    state.wsize = 1 << state.wbits;\n    state.wnext = 0;\n    state.whave = 0;\n\n    state.window = new Uint8Array(state.wsize);\n  }\n\n  /* copy state->wsize or less output bytes into the circular window */\n  if (copy >= state.wsize) {\n    state.window.set(src.subarray(end - state.wsize, end), 0);\n    state.wnext = 0;\n    state.whave = state.wsize;\n  }\n  else {\n    dist = state.wsize - state.wnext;\n    if (dist > copy) {\n      dist = copy;\n    }\n    //zmemcpy(state->window + state->wnext, end - copy, dist);\n    state.window.set(src.subarray(end - copy, end - copy + dist), state.wnext);\n    copy -= dist;\n    if (copy) {\n      //zmemcpy(state->window, end - copy, copy);\n      state.window.set(src.subarray(end - copy, end), 0);\n      state.wnext = copy;\n      state.whave = state.wsize;\n    }\n    else {\n      state.wnext += dist;\n      if (state.wnext === state.wsize) { state.wnext = 0; }\n      if (state.whave < state.wsize) { state.whave += dist; }\n    }\n  }\n  return 0;\n};\n\n\nconst inflate$2 = (strm, flush) => {\n\n  let state;\n  let input, output;          // input/output buffers\n  let next;                   /* next input INDEX */\n  let put;                    /* next output INDEX */\n  let have, left;             /* available input and output */\n  let hold;                   /* bit buffer */\n  let bits;                   /* bits in bit buffer */\n  let _in, _out;              /* save starting available input and output */\n  let copy;                   /* number of stored or match bytes to copy */\n  let from;                   /* where to copy match bytes from */\n  let from_source;\n  let here = 0;               /* current decoding table entry */\n  let here_bits, here_op, here_val; // paked \"here\" denormalized (JS specific)\n  //let last;                   /* parent table entry */\n  let last_bits, last_op, last_val; // paked \"last\" denormalized (JS specific)\n  let len;                    /* length to copy for repeats, bits to drop */\n  let ret;                    /* return code */\n  const hbuf = new Uint8Array(4);    /* buffer for gzip header crc calculation */\n  let opts;\n\n  let n; // temporary variable for NEED_BITS\n\n  const order = /* permutation of code lengths */\n    new Uint8Array([ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ]);\n\n\n  if (inflateStateCheck(strm) || !strm.output ||\n      (!strm.input && strm.avail_in !== 0)) {\n    return Z_STREAM_ERROR$1;\n  }\n\n  state = strm.state;\n  if (state.mode === TYPE) { state.mode = TYPEDO; }    /* skip check */\n\n\n  //--- LOAD() ---\n  put = strm.next_out;\n  output = strm.output;\n  left = strm.avail_out;\n  next = strm.next_in;\n  input = strm.input;\n  have = strm.avail_in;\n  hold = state.hold;\n  bits = state.bits;\n  //---\n\n  _in = have;\n  _out = left;\n  ret = Z_OK$1;\n\n  inf_leave: // goto emulation\n  for (;;) {\n    switch (state.mode) {\n      case HEAD:\n        if (state.wrap === 0) {\n          state.mode = TYPEDO;\n          break;\n        }\n        //=== NEEDBITS(16);\n        while (bits < 16) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        if ((state.wrap & 2) && hold === 0x8b1f) {  /* gzip header */\n          if (state.wbits === 0) {\n            state.wbits = 15;\n          }\n          state.check = 0/*crc32(0L, Z_NULL, 0)*/;\n          //=== CRC2(state.check, hold);\n          hbuf[0] = hold & 0xff;\n          hbuf[1] = (hold >>> 8) & 0xff;\n          state.check = crc32_1(state.check, hbuf, 2, 0);\n          //===//\n\n          //=== INITBITS();\n          hold = 0;\n          bits = 0;\n          //===//\n          state.mode = FLAGS;\n          break;\n        }\n        if (state.head) {\n          state.head.done = false;\n        }\n        if (!(state.wrap & 1) ||   /* check if zlib header allowed */\n          (((hold & 0xff)/*BITS(8)*/ << 8) + (hold >> 8)) % 31) {\n          strm.msg = 'incorrect header check';\n          state.mode = BAD;\n          break;\n        }\n        if ((hold & 0x0f)/*BITS(4)*/ !== Z_DEFLATED) {\n          strm.msg = 'unknown compression method';\n          state.mode = BAD;\n          break;\n        }\n        //--- DROPBITS(4) ---//\n        hold >>>= 4;\n        bits -= 4;\n        //---//\n        len = (hold & 0x0f)/*BITS(4)*/ + 8;\n        if (state.wbits === 0) {\n          state.wbits = len;\n        }\n        if (len > 15 || len > state.wbits) {\n          strm.msg = 'invalid window size';\n          state.mode = BAD;\n          break;\n        }\n\n        // !!! pako patch. Force use `options.windowBits` if passed.\n        // Required to always use max window size by default.\n        state.dmax = 1 << state.wbits;\n        //state.dmax = 1 << len;\n\n        state.flags = 0;               /* indicate zlib header */\n        //Tracev((stderr, \"inflate:   zlib header ok\\n\"));\n        strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;\n        state.mode = hold & 0x200 ? DICTID : TYPE;\n        //=== INITBITS();\n        hold = 0;\n        bits = 0;\n        //===//\n        break;\n      case FLAGS:\n        //=== NEEDBITS(16); */\n        while (bits < 16) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        state.flags = hold;\n        if ((state.flags & 0xff) !== Z_DEFLATED) {\n          strm.msg = 'unknown compression method';\n          state.mode = BAD;\n          break;\n        }\n        if (state.flags & 0xe000) {\n          strm.msg = 'unknown header flags set';\n          state.mode = BAD;\n          break;\n        }\n        if (state.head) {\n          state.head.text = ((hold >> 8) & 1);\n        }\n        if ((state.flags & 0x0200) && (state.wrap & 4)) {\n          //=== CRC2(state.check, hold);\n          hbuf[0] = hold & 0xff;\n          hbuf[1] = (hold >>> 8) & 0xff;\n          state.check = crc32_1(state.check, hbuf, 2, 0);\n          //===//\n        }\n        //=== INITBITS();\n        hold = 0;\n        bits = 0;\n        //===//\n        state.mode = TIME;\n        /* falls through */\n      case TIME:\n        //=== NEEDBITS(32); */\n        while (bits < 32) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        if (state.head) {\n          state.head.time = hold;\n        }\n        if ((state.flags & 0x0200) && (state.wrap & 4)) {\n          //=== CRC4(state.check, hold)\n          hbuf[0] = hold & 0xff;\n          hbuf[1] = (hold >>> 8) & 0xff;\n          hbuf[2] = (hold >>> 16) & 0xff;\n          hbuf[3] = (hold >>> 24) & 0xff;\n          state.check = crc32_1(state.check, hbuf, 4, 0);\n          //===\n        }\n        //=== INITBITS();\n        hold = 0;\n        bits = 0;\n        //===//\n        state.mode = OS;\n        /* falls through */\n      case OS:\n        //=== NEEDBITS(16); */\n        while (bits < 16) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        if (state.head) {\n          state.head.xflags = (hold & 0xff);\n          state.head.os = (hold >> 8);\n        }\n        if ((state.flags & 0x0200) && (state.wrap & 4)) {\n          //=== CRC2(state.check, hold);\n          hbuf[0] = hold & 0xff;\n          hbuf[1] = (hold >>> 8) & 0xff;\n          state.check = crc32_1(state.check, hbuf, 2, 0);\n          //===//\n        }\n        //=== INITBITS();\n        hold = 0;\n        bits = 0;\n        //===//\n        state.mode = EXLEN;\n        /* falls through */\n      case EXLEN:\n        if (state.flags & 0x0400) {\n          //=== NEEDBITS(16); */\n          while (bits < 16) {\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          //===//\n          state.length = hold;\n          if (state.head) {\n            state.head.extra_len = hold;\n          }\n          if ((state.flags & 0x0200) && (state.wrap & 4)) {\n            //=== CRC2(state.check, hold);\n            hbuf[0] = hold & 0xff;\n            hbuf[1] = (hold >>> 8) & 0xff;\n            state.check = crc32_1(state.check, hbuf, 2, 0);\n            //===//\n          }\n          //=== INITBITS();\n          hold = 0;\n          bits = 0;\n          //===//\n        }\n        else if (state.head) {\n          state.head.extra = null/*Z_NULL*/;\n        }\n        state.mode = EXTRA;\n        /* falls through */\n      case EXTRA:\n        if (state.flags & 0x0400) {\n          copy = state.length;\n          if (copy > have) { copy = have; }\n          if (copy) {\n            if (state.head) {\n              len = state.head.extra_len - state.length;\n              if (!state.head.extra) {\n                // Use untyped array for more convenient processing later\n                state.head.extra = new Uint8Array(state.head.extra_len);\n              }\n              state.head.extra.set(\n                input.subarray(\n                  next,\n                  // extra field is limited to 65536 bytes\n                  // - no need for additional size check\n                  next + copy\n                ),\n                /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/\n                len\n              );\n              //zmemcpy(state.head.extra + len, next,\n              //        len + copy > state.head.extra_max ?\n              //        state.head.extra_max - len : copy);\n            }\n            if ((state.flags & 0x0200) && (state.wrap & 4)) {\n              state.check = crc32_1(state.check, input, copy, next);\n            }\n            have -= copy;\n            next += copy;\n            state.length -= copy;\n          }\n          if (state.length) { break inf_leave; }\n        }\n        state.length = 0;\n        state.mode = NAME;\n        /* falls through */\n      case NAME:\n        if (state.flags & 0x0800) {\n          if (have === 0) { break inf_leave; }\n          copy = 0;\n          do {\n            // TODO: 2 or 1 bytes?\n            len = input[next + copy++];\n            /* use constant limit because in js we should not preallocate memory */\n            if (state.head && len &&\n                (state.length < 65536 /*state.head.name_max*/)) {\n              state.head.name += String.fromCharCode(len);\n            }\n          } while (len && copy < have);\n\n          if ((state.flags & 0x0200) && (state.wrap & 4)) {\n            state.check = crc32_1(state.check, input, copy, next);\n          }\n          have -= copy;\n          next += copy;\n          if (len) { break inf_leave; }\n        }\n        else if (state.head) {\n          state.head.name = null;\n        }\n        state.length = 0;\n        state.mode = COMMENT;\n        /* falls through */\n      case COMMENT:\n        if (state.flags & 0x1000) {\n          if (have === 0) { break inf_leave; }\n          copy = 0;\n          do {\n            len = input[next + copy++];\n            /* use constant limit because in js we should not preallocate memory */\n            if (state.head && len &&\n                (state.length < 65536 /*state.head.comm_max*/)) {\n              state.head.comment += String.fromCharCode(len);\n            }\n          } while (len && copy < have);\n          if ((state.flags & 0x0200) && (state.wrap & 4)) {\n            state.check = crc32_1(state.check, input, copy, next);\n          }\n          have -= copy;\n          next += copy;\n          if (len) { break inf_leave; }\n        }\n        else if (state.head) {\n          state.head.comment = null;\n        }\n        state.mode = HCRC;\n        /* falls through */\n      case HCRC:\n        if (state.flags & 0x0200) {\n          //=== NEEDBITS(16); */\n          while (bits < 16) {\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          //===//\n          if ((state.wrap & 4) && hold !== (state.check & 0xffff)) {\n            strm.msg = 'header crc mismatch';\n            state.mode = BAD;\n            break;\n          }\n          //=== INITBITS();\n          hold = 0;\n          bits = 0;\n          //===//\n        }\n        if (state.head) {\n          state.head.hcrc = ((state.flags >> 9) & 1);\n          state.head.done = true;\n        }\n        strm.adler = state.check = 0;\n        state.mode = TYPE;\n        break;\n      case DICTID:\n        //=== NEEDBITS(32); */\n        while (bits < 32) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        strm.adler = state.check = zswap32(hold);\n        //=== INITBITS();\n        hold = 0;\n        bits = 0;\n        //===//\n        state.mode = DICT;\n        /* falls through */\n      case DICT:\n        if (state.havedict === 0) {\n          //--- RESTORE() ---\n          strm.next_out = put;\n          strm.avail_out = left;\n          strm.next_in = next;\n          strm.avail_in = have;\n          state.hold = hold;\n          state.bits = bits;\n          //---\n          return Z_NEED_DICT$1;\n        }\n        strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;\n        state.mode = TYPE;\n        /* falls through */\n      case TYPE:\n        if (flush === Z_BLOCK || flush === Z_TREES) { break inf_leave; }\n        /* falls through */\n      case TYPEDO:\n        if (state.last) {\n          //--- BYTEBITS() ---//\n          hold >>>= bits & 7;\n          bits -= bits & 7;\n          //---//\n          state.mode = CHECK;\n          break;\n        }\n        //=== NEEDBITS(3); */\n        while (bits < 3) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        state.last = (hold & 0x01)/*BITS(1)*/;\n        //--- DROPBITS(1) ---//\n        hold >>>= 1;\n        bits -= 1;\n        //---//\n\n        switch ((hold & 0x03)/*BITS(2)*/) {\n          case 0:                             /* stored block */\n            //Tracev((stderr, \"inflate:     stored block%s\\n\",\n            //        state.last ? \" (last)\" : \"\"));\n            state.mode = STORED;\n            break;\n          case 1:                             /* fixed block */\n            fixedtables(state);\n            //Tracev((stderr, \"inflate:     fixed codes block%s\\n\",\n            //        state.last ? \" (last)\" : \"\"));\n            state.mode = LEN_;             /* decode codes */\n            if (flush === Z_TREES) {\n              //--- DROPBITS(2) ---//\n              hold >>>= 2;\n              bits -= 2;\n              //---//\n              break inf_leave;\n            }\n            break;\n          case 2:                             /* dynamic block */\n            //Tracev((stderr, \"inflate:     dynamic codes block%s\\n\",\n            //        state.last ? \" (last)\" : \"\"));\n            state.mode = TABLE;\n            break;\n          case 3:\n            strm.msg = 'invalid block type';\n            state.mode = BAD;\n        }\n        //--- DROPBITS(2) ---//\n        hold >>>= 2;\n        bits -= 2;\n        //---//\n        break;\n      case STORED:\n        //--- BYTEBITS() ---// /* go to byte boundary */\n        hold >>>= bits & 7;\n        bits -= bits & 7;\n        //---//\n        //=== NEEDBITS(32); */\n        while (bits < 32) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        if ((hold & 0xffff) !== ((hold >>> 16) ^ 0xffff)) {\n          strm.msg = 'invalid stored block lengths';\n          state.mode = BAD;\n          break;\n        }\n        state.length = hold & 0xffff;\n        //Tracev((stderr, \"inflate:       stored length %u\\n\",\n        //        state.length));\n        //=== INITBITS();\n        hold = 0;\n        bits = 0;\n        //===//\n        state.mode = COPY_;\n        if (flush === Z_TREES) { break inf_leave; }\n        /* falls through */\n      case COPY_:\n        state.mode = COPY;\n        /* falls through */\n      case COPY:\n        copy = state.length;\n        if (copy) {\n          if (copy > have) { copy = have; }\n          if (copy > left) { copy = left; }\n          if (copy === 0) { break inf_leave; }\n          //--- zmemcpy(put, next, copy); ---\n          output.set(input.subarray(next, next + copy), put);\n          //---//\n          have -= copy;\n          next += copy;\n          left -= copy;\n          put += copy;\n          state.length -= copy;\n          break;\n        }\n        //Tracev((stderr, \"inflate:       stored end\\n\"));\n        state.mode = TYPE;\n        break;\n      case TABLE:\n        //=== NEEDBITS(14); */\n        while (bits < 14) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        state.nlen = (hold & 0x1f)/*BITS(5)*/ + 257;\n        //--- DROPBITS(5) ---//\n        hold >>>= 5;\n        bits -= 5;\n        //---//\n        state.ndist = (hold & 0x1f)/*BITS(5)*/ + 1;\n        //--- DROPBITS(5) ---//\n        hold >>>= 5;\n        bits -= 5;\n        //---//\n        state.ncode = (hold & 0x0f)/*BITS(4)*/ + 4;\n        //--- DROPBITS(4) ---//\n        hold >>>= 4;\n        bits -= 4;\n        //---//\n//#ifndef PKZIP_BUG_WORKAROUND\n        if (state.nlen > 286 || state.ndist > 30) {\n          strm.msg = 'too many length or distance symbols';\n          state.mode = BAD;\n          break;\n        }\n//#endif\n        //Tracev((stderr, \"inflate:       table sizes ok\\n\"));\n        state.have = 0;\n        state.mode = LENLENS;\n        /* falls through */\n      case LENLENS:\n        while (state.have < state.ncode) {\n          //=== NEEDBITS(3);\n          while (bits < 3) {\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          //===//\n          state.lens[order[state.have++]] = (hold & 0x07);//BITS(3);\n          //--- DROPBITS(3) ---//\n          hold >>>= 3;\n          bits -= 3;\n          //---//\n        }\n        while (state.have < 19) {\n          state.lens[order[state.have++]] = 0;\n        }\n        // We have separate tables & no pointers. 2 commented lines below not needed.\n        //state.next = state.codes;\n        //state.lencode = state.next;\n        // Switch to use dynamic table\n        state.lencode = state.lendyn;\n        state.lenbits = 7;\n\n        opts = { bits: state.lenbits };\n        ret = inftrees(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts);\n        state.lenbits = opts.bits;\n\n        if (ret) {\n          strm.msg = 'invalid code lengths set';\n          state.mode = BAD;\n          break;\n        }\n        //Tracev((stderr, \"inflate:       code lengths ok\\n\"));\n        state.have = 0;\n        state.mode = CODELENS;\n        /* falls through */\n      case CODELENS:\n        while (state.have < state.nlen + state.ndist) {\n          for (;;) {\n            here = state.lencode[hold & ((1 << state.lenbits) - 1)];/*BITS(state.lenbits)*/\n            here_bits = here >>> 24;\n            here_op = (here >>> 16) & 0xff;\n            here_val = here & 0xffff;\n\n            if ((here_bits) <= bits) { break; }\n            //--- PULLBYTE() ---//\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n            //---//\n          }\n          if (here_val < 16) {\n            //--- DROPBITS(here.bits) ---//\n            hold >>>= here_bits;\n            bits -= here_bits;\n            //---//\n            state.lens[state.have++] = here_val;\n          }\n          else {\n            if (here_val === 16) {\n              //=== NEEDBITS(here.bits + 2);\n              n = here_bits + 2;\n              while (bits < n) {\n                if (have === 0) { break inf_leave; }\n                have--;\n                hold += input[next++] << bits;\n                bits += 8;\n              }\n              //===//\n              //--- DROPBITS(here.bits) ---//\n              hold >>>= here_bits;\n              bits -= here_bits;\n              //---//\n              if (state.have === 0) {\n                strm.msg = 'invalid bit length repeat';\n                state.mode = BAD;\n                break;\n              }\n              len = state.lens[state.have - 1];\n              copy = 3 + (hold & 0x03);//BITS(2);\n              //--- DROPBITS(2) ---//\n              hold >>>= 2;\n              bits -= 2;\n              //---//\n            }\n            else if (here_val === 17) {\n              //=== NEEDBITS(here.bits + 3);\n              n = here_bits + 3;\n              while (bits < n) {\n                if (have === 0) { break inf_leave; }\n                have--;\n                hold += input[next++] << bits;\n                bits += 8;\n              }\n              //===//\n              //--- DROPBITS(here.bits) ---//\n              hold >>>= here_bits;\n              bits -= here_bits;\n              //---//\n              len = 0;\n              copy = 3 + (hold & 0x07);//BITS(3);\n              //--- DROPBITS(3) ---//\n              hold >>>= 3;\n              bits -= 3;\n              //---//\n            }\n            else {\n              //=== NEEDBITS(here.bits + 7);\n              n = here_bits + 7;\n              while (bits < n) {\n                if (have === 0) { break inf_leave; }\n                have--;\n                hold += input[next++] << bits;\n                bits += 8;\n              }\n              //===//\n              //--- DROPBITS(here.bits) ---//\n              hold >>>= here_bits;\n              bits -= here_bits;\n              //---//\n              len = 0;\n              copy = 11 + (hold & 0x7f);//BITS(7);\n              //--- DROPBITS(7) ---//\n              hold >>>= 7;\n              bits -= 7;\n              //---//\n            }\n            if (state.have + copy > state.nlen + state.ndist) {\n              strm.msg = 'invalid bit length repeat';\n              state.mode = BAD;\n              break;\n            }\n            while (copy--) {\n              state.lens[state.have++] = len;\n            }\n          }\n        }\n\n        /* handle error breaks in while */\n        if (state.mode === BAD) { break; }\n\n        /* check for end-of-block code (better have one) */\n        if (state.lens[256] === 0) {\n          strm.msg = 'invalid code -- missing end-of-block';\n          state.mode = BAD;\n          break;\n        }\n\n        /* build code tables -- note: do not change the lenbits or distbits\n           values here (9 and 6) without reading the comments in inftrees.h\n           concerning the ENOUGH constants, which depend on those values */\n        state.lenbits = 9;\n\n        opts = { bits: state.lenbits };\n        ret = inftrees(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts);\n        // We have separate tables & no pointers. 2 commented lines below not needed.\n        // state.next_index = opts.table_index;\n        state.lenbits = opts.bits;\n        // state.lencode = state.next;\n\n        if (ret) {\n          strm.msg = 'invalid literal/lengths set';\n          state.mode = BAD;\n          break;\n        }\n\n        state.distbits = 6;\n        //state.distcode.copy(state.codes);\n        // Switch to use dynamic table\n        state.distcode = state.distdyn;\n        opts = { bits: state.distbits };\n        ret = inftrees(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts);\n        // We have separate tables & no pointers. 2 commented lines below not needed.\n        // state.next_index = opts.table_index;\n        state.distbits = opts.bits;\n        // state.distcode = state.next;\n\n        if (ret) {\n          strm.msg = 'invalid distances set';\n          state.mode = BAD;\n          break;\n        }\n        //Tracev((stderr, 'inflate:       codes ok\\n'));\n        state.mode = LEN_;\n        if (flush === Z_TREES) { break inf_leave; }\n        /* falls through */\n      case LEN_:\n        state.mode = LEN;\n        /* falls through */\n      case LEN:\n        if (have >= 6 && left >= 258) {\n          //--- RESTORE() ---\n          strm.next_out = put;\n          strm.avail_out = left;\n          strm.next_in = next;\n          strm.avail_in = have;\n          state.hold = hold;\n          state.bits = bits;\n          //---\n          inffast(strm, _out);\n          //--- LOAD() ---\n          put = strm.next_out;\n          output = strm.output;\n          left = strm.avail_out;\n          next = strm.next_in;\n          input = strm.input;\n          have = strm.avail_in;\n          hold = state.hold;\n          bits = state.bits;\n          //---\n\n          if (state.mode === TYPE) {\n            state.back = -1;\n          }\n          break;\n        }\n        state.back = 0;\n        for (;;) {\n          here = state.lencode[hold & ((1 << state.lenbits) - 1)];  /*BITS(state.lenbits)*/\n          here_bits = here >>> 24;\n          here_op = (here >>> 16) & 0xff;\n          here_val = here & 0xffff;\n\n          if (here_bits <= bits) { break; }\n          //--- PULLBYTE() ---//\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n          //---//\n        }\n        if (here_op && (here_op & 0xf0) === 0) {\n          last_bits = here_bits;\n          last_op = here_op;\n          last_val = here_val;\n          for (;;) {\n            here = state.lencode[last_val +\n                    ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];\n            here_bits = here >>> 24;\n            here_op = (here >>> 16) & 0xff;\n            here_val = here & 0xffff;\n\n            if ((last_bits + here_bits) <= bits) { break; }\n            //--- PULLBYTE() ---//\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n            //---//\n          }\n          //--- DROPBITS(last.bits) ---//\n          hold >>>= last_bits;\n          bits -= last_bits;\n          //---//\n          state.back += last_bits;\n        }\n        //--- DROPBITS(here.bits) ---//\n        hold >>>= here_bits;\n        bits -= here_bits;\n        //---//\n        state.back += here_bits;\n        state.length = here_val;\n        if (here_op === 0) {\n          //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?\n          //        \"inflate:         literal '%c'\\n\" :\n          //        \"inflate:         literal 0x%02x\\n\", here.val));\n          state.mode = LIT;\n          break;\n        }\n        if (here_op & 32) {\n          //Tracevv((stderr, \"inflate:         end of block\\n\"));\n          state.back = -1;\n          state.mode = TYPE;\n          break;\n        }\n        if (here_op & 64) {\n          strm.msg = 'invalid literal/length code';\n          state.mode = BAD;\n          break;\n        }\n        state.extra = here_op & 15;\n        state.mode = LENEXT;\n        /* falls through */\n      case LENEXT:\n        if (state.extra) {\n          //=== NEEDBITS(state.extra);\n          n = state.extra;\n          while (bits < n) {\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          //===//\n          state.length += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;\n          //--- DROPBITS(state.extra) ---//\n          hold >>>= state.extra;\n          bits -= state.extra;\n          //---//\n          state.back += state.extra;\n        }\n        //Tracevv((stderr, \"inflate:         length %u\\n\", state.length));\n        state.was = state.length;\n        state.mode = DIST;\n        /* falls through */\n      case DIST:\n        for (;;) {\n          here = state.distcode[hold & ((1 << state.distbits) - 1)];/*BITS(state.distbits)*/\n          here_bits = here >>> 24;\n          here_op = (here >>> 16) & 0xff;\n          here_val = here & 0xffff;\n\n          if ((here_bits) <= bits) { break; }\n          //--- PULLBYTE() ---//\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n          //---//\n        }\n        if ((here_op & 0xf0) === 0) {\n          last_bits = here_bits;\n          last_op = here_op;\n          last_val = here_val;\n          for (;;) {\n            here = state.distcode[last_val +\n                    ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];\n            here_bits = here >>> 24;\n            here_op = (here >>> 16) & 0xff;\n            here_val = here & 0xffff;\n\n            if ((last_bits + here_bits) <= bits) { break; }\n            //--- PULLBYTE() ---//\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n            //---//\n          }\n          //--- DROPBITS(last.bits) ---//\n          hold >>>= last_bits;\n          bits -= last_bits;\n          //---//\n          state.back += last_bits;\n        }\n        //--- DROPBITS(here.bits) ---//\n        hold >>>= here_bits;\n        bits -= here_bits;\n        //---//\n        state.back += here_bits;\n        if (here_op & 64) {\n          strm.msg = 'invalid distance code';\n          state.mode = BAD;\n          break;\n        }\n        state.offset = here_val;\n        state.extra = (here_op) & 15;\n        state.mode = DISTEXT;\n        /* falls through */\n      case DISTEXT:\n        if (state.extra) {\n          //=== NEEDBITS(state.extra);\n          n = state.extra;\n          while (bits < n) {\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          //===//\n          state.offset += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;\n          //--- DROPBITS(state.extra) ---//\n          hold >>>= state.extra;\n          bits -= state.extra;\n          //---//\n          state.back += state.extra;\n        }\n//#ifdef INFLATE_STRICT\n        if (state.offset > state.dmax) {\n          strm.msg = 'invalid distance too far back';\n          state.mode = BAD;\n          break;\n        }\n//#endif\n        //Tracevv((stderr, \"inflate:         distance %u\\n\", state.offset));\n        state.mode = MATCH;\n        /* falls through */\n      case MATCH:\n        if (left === 0) { break inf_leave; }\n        copy = _out - left;\n        if (state.offset > copy) {         /* copy from window */\n          copy = state.offset - copy;\n          if (copy > state.whave) {\n            if (state.sane) {\n              strm.msg = 'invalid distance too far back';\n              state.mode = BAD;\n              break;\n            }\n// (!) This block is disabled in zlib defaults,\n// don't enable it for binary compatibility\n//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR\n//          Trace((stderr, \"inflate.c too far\\n\"));\n//          copy -= state.whave;\n//          if (copy > state.length) { copy = state.length; }\n//          if (copy > left) { copy = left; }\n//          left -= copy;\n//          state.length -= copy;\n//          do {\n//            output[put++] = 0;\n//          } while (--copy);\n//          if (state.length === 0) { state.mode = LEN; }\n//          break;\n//#endif\n          }\n          if (copy > state.wnext) {\n            copy -= state.wnext;\n            from = state.wsize - copy;\n          }\n          else {\n            from = state.wnext - copy;\n          }\n          if (copy > state.length) { copy = state.length; }\n          from_source = state.window;\n        }\n        else {                              /* copy from output */\n          from_source = output;\n          from = put - state.offset;\n          copy = state.length;\n        }\n        if (copy > left) { copy = left; }\n        left -= copy;\n        state.length -= copy;\n        do {\n          output[put++] = from_source[from++];\n        } while (--copy);\n        if (state.length === 0) { state.mode = LEN; }\n        break;\n      case LIT:\n        if (left === 0) { break inf_leave; }\n        output[put++] = state.length;\n        left--;\n        state.mode = LEN;\n        break;\n      case CHECK:\n        if (state.wrap) {\n          //=== NEEDBITS(32);\n          while (bits < 32) {\n            if (have === 0) { break inf_leave; }\n            have--;\n            // Use '|' instead of '+' to make sure that result is signed\n            hold |= input[next++] << bits;\n            bits += 8;\n          }\n          //===//\n          _out -= left;\n          strm.total_out += _out;\n          state.total += _out;\n          if ((state.wrap & 4) && _out) {\n            strm.adler = state.check =\n                /*UPDATE_CHECK(state.check, put - _out, _out);*/\n                (state.flags ? crc32_1(state.check, output, _out, put - _out) : adler32_1(state.check, output, _out, put - _out));\n\n          }\n          _out = left;\n          // NB: crc32 stored as signed 32-bit int, zswap32 returns signed too\n          if ((state.wrap & 4) && (state.flags ? hold : zswap32(hold)) !== state.check) {\n            strm.msg = 'incorrect data check';\n            state.mode = BAD;\n            break;\n          }\n          //=== INITBITS();\n          hold = 0;\n          bits = 0;\n          //===//\n          //Tracev((stderr, \"inflate:   check matches trailer\\n\"));\n        }\n        state.mode = LENGTH;\n        /* falls through */\n      case LENGTH:\n        if (state.wrap && state.flags) {\n          //=== NEEDBITS(32);\n          while (bits < 32) {\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          //===//\n          if ((state.wrap & 4) && hold !== (state.total & 0xffffffff)) {\n            strm.msg = 'incorrect length check';\n            state.mode = BAD;\n            break;\n          }\n          //=== INITBITS();\n          hold = 0;\n          bits = 0;\n          //===//\n          //Tracev((stderr, \"inflate:   length matches trailer\\n\"));\n        }\n        state.mode = DONE;\n        /* falls through */\n      case DONE:\n        ret = Z_STREAM_END$1;\n        break inf_leave;\n      case BAD:\n        ret = Z_DATA_ERROR$1;\n        break inf_leave;\n      case MEM:\n        return Z_MEM_ERROR$1;\n      case SYNC:\n        /* falls through */\n      default:\n        return Z_STREAM_ERROR$1;\n    }\n  }\n\n  // inf_leave <- here is real place for \"goto inf_leave\", emulated via \"break inf_leave\"\n\n  /*\n     Return from inflate(), updating the total counts and the check value.\n     If there was no progress during the inflate() call, return a buffer\n     error.  Call updatewindow() to create and/or update the window state.\n     Note: a memory error from inflate() is non-recoverable.\n   */\n\n  //--- RESTORE() ---\n  strm.next_out = put;\n  strm.avail_out = left;\n  strm.next_in = next;\n  strm.avail_in = have;\n  state.hold = hold;\n  state.bits = bits;\n  //---\n\n  if (state.wsize || (_out !== strm.avail_out && state.mode < BAD &&\n                      (state.mode < CHECK || flush !== Z_FINISH$1))) {\n    if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out)) ;\n  }\n  _in -= strm.avail_in;\n  _out -= strm.avail_out;\n  strm.total_in += _in;\n  strm.total_out += _out;\n  state.total += _out;\n  if ((state.wrap & 4) && _out) {\n    strm.adler = state.check = /*UPDATE_CHECK(state.check, strm.next_out - _out, _out);*/\n      (state.flags ? crc32_1(state.check, output, _out, strm.next_out - _out) : adler32_1(state.check, output, _out, strm.next_out - _out));\n  }\n  strm.data_type = state.bits + (state.last ? 64 : 0) +\n                    (state.mode === TYPE ? 128 : 0) +\n                    (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0);\n  if (((_in === 0 && _out === 0) || flush === Z_FINISH$1) && ret === Z_OK$1) {\n    ret = Z_BUF_ERROR;\n  }\n  return ret;\n};\n\n\nconst inflateEnd = (strm) => {\n\n  if (inflateStateCheck(strm)) {\n    return Z_STREAM_ERROR$1;\n  }\n\n  let state = strm.state;\n  if (state.window) {\n    state.window = null;\n  }\n  strm.state = null;\n  return Z_OK$1;\n};\n\n\nconst inflateGetHeader = (strm, head) => {\n\n  /* check state */\n  if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1; }\n  const state = strm.state;\n  if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR$1; }\n\n  /* save header structure */\n  state.head = head;\n  head.done = false;\n  return Z_OK$1;\n};\n\n\nconst inflateSetDictionary = (strm, dictionary) => {\n  const dictLength = dictionary.length;\n\n  let state;\n  let dictid;\n  let ret;\n\n  /* check state */\n  if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1; }\n  state = strm.state;\n\n  if (state.wrap !== 0 && state.mode !== DICT) {\n    return Z_STREAM_ERROR$1;\n  }\n\n  /* check for correct dictionary identifier */\n  if (state.mode === DICT) {\n    dictid = 1; /* adler32(0, null, 0)*/\n    /* dictid = adler32(dictid, dictionary, dictLength); */\n    dictid = adler32_1(dictid, dictionary, dictLength, 0);\n    if (dictid !== state.check) {\n      return Z_DATA_ERROR$1;\n    }\n  }\n  /* copy dictionary to window using updatewindow(), which will amend the\n   existing dictionary if appropriate */\n  ret = updatewindow(strm, dictionary, dictLength, dictLength);\n  if (ret) {\n    state.mode = MEM;\n    return Z_MEM_ERROR$1;\n  }\n  state.havedict = 1;\n  // Tracev((stderr, \"inflate:   dictionary set\\n\"));\n  return Z_OK$1;\n};\n\n\nvar inflateReset_1 = inflateReset;\nvar inflateReset2_1 = inflateReset2;\nvar inflateResetKeep_1 = inflateResetKeep;\nvar inflateInit_1 = inflateInit;\nvar inflateInit2_1 = inflateInit2;\nvar inflate_2$1 = inflate$2;\nvar inflateEnd_1 = inflateEnd;\nvar inflateGetHeader_1 = inflateGetHeader;\nvar inflateSetDictionary_1 = inflateSetDictionary;\nvar inflateInfo = 'pako inflate (from Nodeca project)';\n\n/* Not implemented\nmodule.exports.inflateCodesUsed = inflateCodesUsed;\nmodule.exports.inflateCopy = inflateCopy;\nmodule.exports.inflateGetDictionary = inflateGetDictionary;\nmodule.exports.inflateMark = inflateMark;\nmodule.exports.inflatePrime = inflatePrime;\nmodule.exports.inflateSync = inflateSync;\nmodule.exports.inflateSyncPoint = inflateSyncPoint;\nmodule.exports.inflateUndermine = inflateUndermine;\nmodule.exports.inflateValidate = inflateValidate;\n*/\n\nvar inflate_1$2 = {\n\tinflateReset: inflateReset_1,\n\tinflateReset2: inflateReset2_1,\n\tinflateResetKeep: inflateResetKeep_1,\n\tinflateInit: inflateInit_1,\n\tinflateInit2: inflateInit2_1,\n\tinflate: inflate_2$1,\n\tinflateEnd: inflateEnd_1,\n\tinflateGetHeader: inflateGetHeader_1,\n\tinflateSetDictionary: inflateSetDictionary_1,\n\tinflateInfo: inflateInfo\n};\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nfunction GZheader() {\n  /* true if compressed data believed to be text */\n  this.text       = 0;\n  /* modification time */\n  this.time       = 0;\n  /* extra flags (not used when writing a gzip file) */\n  this.xflags     = 0;\n  /* operating system */\n  this.os         = 0;\n  /* pointer to extra field or Z_NULL if none */\n  this.extra      = null;\n  /* extra field length (valid if extra != Z_NULL) */\n  this.extra_len  = 0; // Actually, we don't need it in JS,\n                       // but leave for few code modifications\n\n  //\n  // Setup limits is not necessary because in js we should not preallocate memory\n  // for inflate use constant limit in 65536 bytes\n  //\n\n  /* space at extra (only when reading header) */\n  // this.extra_max  = 0;\n  /* pointer to zero-terminated file name or Z_NULL */\n  this.name       = '';\n  /* space at name (only when reading header) */\n  // this.name_max   = 0;\n  /* pointer to zero-terminated comment or Z_NULL */\n  this.comment    = '';\n  /* space at comment (only when reading header) */\n  // this.comm_max   = 0;\n  /* true if there was or will be a header crc */\n  this.hcrc       = 0;\n  /* true when done reading gzip header (not used when writing a gzip file) */\n  this.done       = false;\n}\n\nvar gzheader = GZheader;\n\nconst toString = Object.prototype.toString;\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\nconst {\n  Z_NO_FLUSH, Z_FINISH,\n  Z_OK, Z_STREAM_END, Z_NEED_DICT, Z_STREAM_ERROR, Z_DATA_ERROR, Z_MEM_ERROR\n} = constants$2;\n\n/* ===========================================================================*/\n\n\n/**\n * class Inflate\n *\n * Generic JS-style wrapper for zlib calls. If you don't need\n * streaming behaviour - use more simple functions: [[inflate]]\n * and [[inflateRaw]].\n **/\n\n/* internal\n * inflate.chunks -> Array\n *\n * Chunks of output data, if [[Inflate#onData]] not overridden.\n **/\n\n/**\n * Inflate.result -> Uint8Array|String\n *\n * Uncompressed result, generated by default [[Inflate#onData]]\n * and [[Inflate#onEnd]] handlers. Filled after you push last chunk\n * (call [[Inflate#push]] with `Z_FINISH` / `true` param).\n **/\n\n/**\n * Inflate.err -> Number\n *\n * Error code after inflate finished. 0 (Z_OK) on success.\n * Should be checked if broken data possible.\n **/\n\n/**\n * Inflate.msg -> String\n *\n * Error message, if [[Inflate.err]] != 0\n **/\n\n\n/**\n * new Inflate(options)\n * - options (Object): zlib inflate options.\n *\n * Creates new inflator instance with specified params. Throws exception\n * on bad params. Supported options:\n *\n * - `windowBits`\n * - `dictionary`\n *\n * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)\n * for more information on these.\n *\n * Additional options, for internal needs:\n *\n * - `chunkSize` - size of generated data chunks (16K by default)\n * - `raw` (Boolean) - do raw inflate\n * - `to` (String) - if equal to 'string', then result will be converted\n *   from utf8 to utf16 (javascript) string. When string output requested,\n *   chunk length can differ from `chunkSize`, depending on content.\n *\n * By default, when no options set, autodetect deflate/gzip data format via\n * wrapper header.\n *\n * ##### Example:\n *\n * ```javascript\n * const pako = require('pako')\n * const chunk1 = new Uint8Array([1,2,3,4,5,6,7,8,9])\n * const chunk2 = new Uint8Array([10,11,12,13,14,15,16,17,18,19]);\n *\n * const inflate = new pako.Inflate({ level: 3});\n *\n * inflate.push(chunk1, false);\n * inflate.push(chunk2, true);  // true -> last chunk\n *\n * if (inflate.err) { throw new Error(inflate.err); }\n *\n * console.log(inflate.result);\n * ```\n **/\nfunction Inflate$1(options) {\n  this.options = common.assign({\n    chunkSize: 1024 * 64,\n    windowBits: 15,\n    to: ''\n  }, options || {});\n\n  const opt = this.options;\n\n  // Force window size for `raw` data, if not set directly,\n  // because we have no header for autodetect.\n  if (opt.raw && (opt.windowBits >= 0) && (opt.windowBits < 16)) {\n    opt.windowBits = -opt.windowBits;\n    if (opt.windowBits === 0) { opt.windowBits = -15; }\n  }\n\n  // If `windowBits` not defined (and mode not raw) - set autodetect flag for gzip/deflate\n  if ((opt.windowBits >= 0) && (opt.windowBits < 16) &&\n      !(options && options.windowBits)) {\n    opt.windowBits += 32;\n  }\n\n  // Gzip header has no info about windows size, we can do autodetect only\n  // for deflate. So, if window size not set, force it to max when gzip possible\n  if ((opt.windowBits > 15) && (opt.windowBits < 48)) {\n    // bit 3 (16) -> gzipped data\n    // bit 4 (32) -> autodetect gzip/deflate\n    if ((opt.windowBits & 15) === 0) {\n      opt.windowBits |= 15;\n    }\n  }\n\n  this.err    = 0;      // error code, if happens (0 = Z_OK)\n  this.msg    = '';     // error message\n  this.ended  = false;  // used to avoid multiple onEnd() calls\n  this.chunks = [];     // chunks of compressed data\n\n  this.strm   = new zstream();\n  this.strm.avail_out = 0;\n\n  let status  = inflate_1$2.inflateInit2(\n    this.strm,\n    opt.windowBits\n  );\n\n  if (status !== Z_OK) {\n    throw new Error(messages[status]);\n  }\n\n  this.header = new gzheader();\n\n  inflate_1$2.inflateGetHeader(this.strm, this.header);\n\n  // Setup dictionary\n  if (opt.dictionary) {\n    // Convert data if needed\n    if (typeof opt.dictionary === 'string') {\n      opt.dictionary = strings.string2buf(opt.dictionary);\n    } else if (toString.call(opt.dictionary) === '[object ArrayBuffer]') {\n      opt.dictionary = new Uint8Array(opt.dictionary);\n    }\n    if (opt.raw) { //In raw mode we need to set the dictionary early\n      status = inflate_1$2.inflateSetDictionary(this.strm, opt.dictionary);\n      if (status !== Z_OK) {\n        throw new Error(messages[status]);\n      }\n    }\n  }\n}\n\n/**\n * Inflate#push(data[, flush_mode]) -> Boolean\n * - data (Uint8Array|ArrayBuffer): input data\n * - flush_mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE\n *   flush modes. See constants. Skipped or `false` means Z_NO_FLUSH,\n *   `true` means Z_FINISH.\n *\n * Sends input data to inflate pipe, generating [[Inflate#onData]] calls with\n * new output chunks. Returns `true` on success. If end of stream detected,\n * [[Inflate#onEnd]] will be called.\n *\n * `flush_mode` is not needed for normal operation, because end of stream\n * detected automatically. You may try to use it for advanced things, but\n * this functionality was not tested.\n *\n * On fail call [[Inflate#onEnd]] with error code and return false.\n *\n * ##### Example\n *\n * ```javascript\n * push(chunk, false); // push one of data chunks\n * ...\n * push(chunk, true);  // push last chunk\n * ```\n **/\nInflate$1.prototype.push = function (data, flush_mode) {\n  const strm = this.strm;\n  const chunkSize = this.options.chunkSize;\n  const dictionary = this.options.dictionary;\n  let status, _flush_mode, last_avail_out;\n\n  if (this.ended) return false;\n\n  if (flush_mode === ~~flush_mode) _flush_mode = flush_mode;\n  else _flush_mode = flush_mode === true ? Z_FINISH : Z_NO_FLUSH;\n\n  // Convert data if needed\n  if (toString.call(data) === '[object ArrayBuffer]') {\n    strm.input = new Uint8Array(data);\n  } else {\n    strm.input = data;\n  }\n\n  strm.next_in = 0;\n  strm.avail_in = strm.input.length;\n\n  for (;;) {\n    if (strm.avail_out === 0) {\n      strm.output = new Uint8Array(chunkSize);\n      strm.next_out = 0;\n      strm.avail_out = chunkSize;\n    }\n\n    status = inflate_1$2.inflate(strm, _flush_mode);\n\n    if (status === Z_NEED_DICT && dictionary) {\n      status = inflate_1$2.inflateSetDictionary(strm, dictionary);\n\n      if (status === Z_OK) {\n        status = inflate_1$2.inflate(strm, _flush_mode);\n      } else if (status === Z_DATA_ERROR) {\n        // Replace code with more verbose\n        status = Z_NEED_DICT;\n      }\n    }\n\n    // Skip snyc markers if more data follows and not raw mode\n    while (strm.avail_in > 0 &&\n           status === Z_STREAM_END &&\n           strm.state.wrap > 0 &&\n           data[strm.next_in] !== 0)\n    {\n      inflate_1$2.inflateReset(strm);\n      status = inflate_1$2.inflate(strm, _flush_mode);\n    }\n\n    switch (status) {\n      case Z_STREAM_ERROR:\n      case Z_DATA_ERROR:\n      case Z_NEED_DICT:\n      case Z_MEM_ERROR:\n        this.onEnd(status);\n        this.ended = true;\n        return false;\n    }\n\n    // Remember real `avail_out` value, because we may patch out buffer content\n    // to align utf8 strings boundaries.\n    last_avail_out = strm.avail_out;\n\n    if (strm.next_out) {\n      if (strm.avail_out === 0 || status === Z_STREAM_END) {\n\n        if (this.options.to === 'string') {\n\n          let next_out_utf8 = strings.utf8border(strm.output, strm.next_out);\n\n          let tail = strm.next_out - next_out_utf8;\n          let utf8str = strings.buf2string(strm.output, next_out_utf8);\n\n          // move tail & realign counters\n          strm.next_out = tail;\n          strm.avail_out = chunkSize - tail;\n          if (tail) strm.output.set(strm.output.subarray(next_out_utf8, next_out_utf8 + tail), 0);\n\n          this.onData(utf8str);\n\n        } else {\n          this.onData(strm.output.length === strm.next_out ? strm.output : strm.output.subarray(0, strm.next_out));\n        }\n      }\n    }\n\n    // Must repeat iteration if out buffer is full\n    if (status === Z_OK && last_avail_out === 0) continue;\n\n    // Finalize if end of stream reached.\n    if (status === Z_STREAM_END) {\n      status = inflate_1$2.inflateEnd(this.strm);\n      this.onEnd(status);\n      this.ended = true;\n      return true;\n    }\n\n    if (strm.avail_in === 0) break;\n  }\n\n  return true;\n};\n\n\n/**\n * Inflate#onData(chunk) -> Void\n * - chunk (Uint8Array|String): output data. When string output requested,\n *   each chunk will be string.\n *\n * By default, stores data blocks in `chunks[]` property and glue\n * those in `onEnd`. Override this handler, if you need another behaviour.\n **/\nInflate$1.prototype.onData = function (chunk) {\n  this.chunks.push(chunk);\n};\n\n\n/**\n * Inflate#onEnd(status) -> Void\n * - status (Number): inflate status. 0 (Z_OK) on success,\n *   other if not.\n *\n * Called either after you tell inflate that the input stream is\n * complete (Z_FINISH). By default - join collected chunks,\n * free memory and fill `results` / `err` properties.\n **/\nInflate$1.prototype.onEnd = function (status) {\n  // On success - join\n  if (status === Z_OK) {\n    if (this.options.to === 'string') {\n      this.result = this.chunks.join('');\n    } else {\n      this.result = common.flattenChunks(this.chunks);\n    }\n  }\n  this.chunks = [];\n  this.err = status;\n  this.msg = this.strm.msg;\n};\n\n\n/**\n * inflate(data[, options]) -> Uint8Array|String\n * - data (Uint8Array|ArrayBuffer): input data to decompress.\n * - options (Object): zlib inflate options.\n *\n * Decompress `data` with inflate/ungzip and `options`. Autodetect\n * format via wrapper header by default. That's why we don't provide\n * separate `ungzip` method.\n *\n * Supported options are:\n *\n * - windowBits\n *\n * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)\n * for more information.\n *\n * Sugar (options):\n *\n * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify\n *   negative windowBits implicitly.\n * - `to` (String) - if equal to 'string', then result will be converted\n *   from utf8 to utf16 (javascript) string. When string output requested,\n *   chunk length can differ from `chunkSize`, depending on content.\n *\n *\n * ##### Example:\n *\n * ```javascript\n * const pako = require('pako');\n * const input = pako.deflate(new Uint8Array([1,2,3,4,5,6,7,8,9]));\n * let output;\n *\n * try {\n *   output = pako.inflate(input);\n * } catch (err) {\n *   console.log(err);\n * }\n * ```\n **/\nfunction inflate$1(input, options) {\n  const inflator = new Inflate$1(options);\n\n  inflator.push(input);\n\n  // That will never happens, if you don't cheat with options :)\n  if (inflator.err) throw inflator.msg || messages[inflator.err];\n\n  return inflator.result;\n}\n\n\n/**\n * inflateRaw(data[, options]) -> Uint8Array|String\n * - data (Uint8Array|ArrayBuffer): input data to decompress.\n * - options (Object): zlib inflate options.\n *\n * The same as [[inflate]], but creates raw data, without wrapper\n * (header and adler32 crc).\n **/\nfunction inflateRaw$1(input, options) {\n  options = options || {};\n  options.raw = true;\n  return inflate$1(input, options);\n}\n\n\n/**\n * ungzip(data[, options]) -> Uint8Array|String\n * - data (Uint8Array|ArrayBuffer): input data to decompress.\n * - options (Object): zlib inflate options.\n *\n * Just shortcut to [[inflate]], because it autodetects format\n * by header.content. Done for convenience.\n **/\n\n\nvar Inflate_1$1 = Inflate$1;\nvar inflate_2 = inflate$1;\nvar inflateRaw_1$1 = inflateRaw$1;\nvar ungzip$1 = inflate$1;\nvar constants = constants$2;\n\nvar inflate_1$1 = {\n\tInflate: Inflate_1$1,\n\tinflate: inflate_2,\n\tinflateRaw: inflateRaw_1$1,\n\tungzip: ungzip$1,\n\tconstants: constants\n};\n\nconst { Deflate, deflate, deflateRaw, gzip } = deflate_1$1;\n\nconst { Inflate, inflate, inflateRaw, ungzip } = inflate_1$1;\n\n\n\nvar Deflate_1 = Deflate;\nvar deflate_1 = deflate;\nvar deflateRaw_1 = deflateRaw;\nvar gzip_1 = gzip;\nvar Inflate_1 = Inflate;\nvar inflate_1 = inflate;\nvar inflateRaw_1 = inflateRaw;\nvar ungzip_1 = ungzip;\nvar constants_1 = constants$2;\n\n\nexport { Deflate_1 as Deflate, Inflate_1 as Inflate, constants_1 as constants, deflate_1 as deflate, deflateRaw_1 as deflateRaw, gzip_1 as gzip, inflate_1 as inflate, inflateRaw_1 as inflateRaw, ungzip_1 as ungzip };\n","\nimport {ungzip, gzip, deflateRaw, inflateRaw, inflate} from \"./pako.esm.js\"\n\n\nconst FEXTRA = 4;  // gzip spec F.EXTRA flag\n\nfunction isgzipped(data) {\n    const b = ArrayBuffer.isView(data) ? data : new Uint8Array(data);\n    return b[0] ===31 && b[1] === 139;\n}\n\n/**\n * Pako does not properly ungzip block compressed files if > 1 block is present.  Test for bgzip and use wrapper.\n */\nfunction ungzip_blocks(data) {\n    const ba = ArrayBuffer.isView(data) ? data : new Uint8Array(data);\n    const b = ba[3] & FEXTRA;\n    if (b !== 0 && ba[12] === 66 && ba[13] === 67) {\n        return unbgzf(ba.buffer);\n    } else {\n        return ungzip(ba);\n    }\n}\n\n// Uncompress data,  assumed to be series of bgzipped blocks\nfunction unbgzf(data, lim) {\n\n    const oBlockList = [];\n    let ptr = 0;\n    let totalSize = 0;\n\n    lim = lim || data.byteLength - 18;\n\n    while (ptr < lim) {\n        try {\n            const ba = ArrayBuffer.isView(data) ? data : new Uint8Array(data, ptr, 18);\n            const xlen = (ba[11] << 8) | (ba[10]);\n            const flg = ba[3];\n            const fextra = flg & FEXTRA;\n            const si1 = ba[12];\n            const si2 = ba[13];\n            const slen = (ba[15] << 8) | (ba[14]);\n            const bsize = ((ba[17] << 8) | (ba[16])) + 1;\n            const start = 12 + xlen + ptr;    // Start of CDATA\n            const bytesLeft = data.byteLength - start;\n            const cDataSize = bsize - xlen - 19;\n            if (bytesLeft < cDataSize || cDataSize <= 0) break;\n\n            const a = new Uint8Array(data, start, cDataSize);\n            const unc = inflateRaw(a);\n\n            // const inflate = new Zlib.RawInflate(a);\n            // const unc = inflate.decompress();\n\n            ptr += (cDataSize - 1) + 26; //inflate.ip + 26\n            totalSize += unc.byteLength;\n            oBlockList.push(unc);\n        } catch (e) {\n            console.error(e)\n            break;\n        }\n    }\n\n    // Concatenate decompressed blocks\n    if (oBlockList.length === 1) {\n        return oBlockList[0];\n    } else {\n        const out = new Uint8Array(totalSize);\n        let cursor = 0;\n        for (let i = 0; i < oBlockList.length; ++i) {\n            var b = new Uint8Array(oBlockList[i]);\n            arrayCopy(b, 0, out, cursor, b.length);\n            cursor += b.length;\n        }\n        return out;\n    }\n}\n\nfunction bgzBlockSize(data) {\n    const ba = ArrayBuffer.isView(data) ? data : new Uint8Array(data);\n    const bsize = (ba[17] << 8 | ba[16]) + 1;\n    return bsize;\n}\n\n// From Thomas Down's zlib implementation\n\nconst testArray = new Uint8Array(1);\nconst hasSubarray = (typeof testArray.subarray === 'function');\n\nfunction arrayCopy(src, srcOffset, dest, destOffset, count) {\n    if (count === 0) {\n        return;\n    }\n    if (!src) {\n        throw \"Undef src\";\n    } else if (!dest) {\n        throw \"Undef dest\";\n    }\n    if (srcOffset === 0 && count === src.length) {\n        arrayCopy_fast(src, dest, destOffset);\n    } else if (hasSubarray) {\n        arrayCopy_fast(src.subarray(srcOffset, srcOffset + count), dest, destOffset);\n    } else if (src.BYTES_PER_ELEMENT === 1 && count > 100) {\n        arrayCopy_fast(new Uint8Array(src.buffer, src.byteOffset + srcOffset, count), dest, destOffset);\n    } else {\n        arrayCopy_slow(src, srcOffset, dest, destOffset, count);\n    }\n}\n\nfunction arrayCopy_slow(src, srcOffset, dest, destOffset, count) {\n    for (let i = 0; i < count; ++i) {\n        dest[destOffset + i] = src[srcOffset + i];\n    }\n}\n\nfunction arrayCopy_fast(src, dest, destOffset) {\n    dest.set(src, destOffset);\n}\n\n\n/**\n * Compress string and encode in a url safe form\n * @param s\n */\nfunction compressString(str) {\n\n    const bytes = new Uint8Array(str.length);\n    for (var i = 0; i < str.length; i++) {\n        bytes[i] = str.charCodeAt(i);\n    }\n    const compressedBytes = new deflateRaw(bytes);            // UInt8Arry\n    const compressedString = String.fromCharCode.apply(null, compressedBytes);      // Convert to string\n    let enc = btoa(compressedString);\n    return enc.replace(/\\+/g, '.').replace(/\\//g, '_').replace(/=/g, '-');   // URL safe\n}\n\n/**\n * Uncompress the url-safe encoded compressed string, presumably created by compressString above\n *\n * @param enc\n * @returns {string}\n */\nfunction uncompressString(enc) {\n\n    enc = enc.replace(/\\./g, '+').replace(/_/g, '/').replace(/-/g, '=')\n\n    const compressedString = atob(enc);\n    const compressedBytes = [];\n    for (let i = 0; i < compressedString.length; i++) {\n        compressedBytes.push(compressedString.charCodeAt(i));\n    }\n    //const bytes = new Zlib.RawInflate(compressedBytes).decompress();\n    const bytes = inflateRaw(compressedBytes);\n\n    let str = ''\n    for (let b of bytes) {\n        str += String.fromCharCode(b)\n    }\n    return str;\n}\n\n\n/**\n * @param dataURI\n * @returns {Array<number>|Uint8Array}\n */\nfunction decodeDataURI(dataURI, gzip) {\n\n    const split = dataURI.split(',');\n    const info = split[0].split(':')[1];\n    let dataString = split[1];\n\n    if (info.indexOf('base64') >= 0) {\n        dataString = atob(dataString);\n\n        const bytes = new Uint8Array(dataString.length);\n        for (let i = 0; i < dataString.length; i++) {\n            bytes[i] = dataString.charCodeAt(i);\n        }\n\n        let plain\n        if (gzip || info.indexOf('gzip') > 0) {\n            plain = ungzip(bytes)\n        } else {\n            plain = bytes\n        }\n        return plain\n    } else {\n        return decodeURIComponent(dataString);      // URL encoded string -- not currently used or tested\n    }\n}\n\nexport {\n    unbgzf,\n    bgzBlockSize,\n    gzip,\n    ungzip_blocks as ungzip,\n    isgzipped,\n    compressString,\n    uncompressString,\n    decodeDataURI,\n    inflate,\n    inflateRaw\n}","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\nconst IGVMath = {\n\n    lerp: (v0, v1, t) => {\n        return (1 - t) * v0 + t * v1;\n    },\n\n    mean: function (array) {\n\n        var t = 0, n = 0,\n            i;\n        for (i = 0; i < array.length; i++) {\n            if (!isNaN(array[i])) {\n                t += array[i];\n                n++;\n            }\n        }\n        return n > 0 ? t / n : 0;\n    },\n\n    meanAndStdev: function (array) {\n\n        var v, t = 0, t2 = 0, n = 0, i;\n\n        for (i = 0; i < array.length; i++) {\n\n            v = array[i];\n\n            if (!isNaN(v)) {\n                t += v;\n                t2 += v * v;\n                n++;\n            }\n        }\n        return n > 0 ? {mean: t / n, stdev: Math.sqrt(t2 - t * t / n)} : {mean: 0, stdev: 0};\n    },\n\n    median: function (numbers) {\n        // median of [3, 5, 4, 4, 1, 1, 2, 3] = 3\n        var median = 0, numsLen = numbers.length;\n        numbers.sort();\n\n        if (\n            numsLen % 2 === 0 // is even\n        ) {\n            // average of two middle numbers\n            median = (numbers[numsLen / 2 - 1] + numbers[numsLen / 2]) / 2;\n        } else { // is odd\n            // middle number only\n            median = numbers[(numsLen - 1) / 2];\n        }\n\n        return median;\n    },\n\n    // Fast percentile function for \"p\" near edges.  This needs profiled for p in middle (e.g. median)\n    percentile: function (array, p) {\n\n        if (array.length === 0) return undefined;\n\n        var k = Math.floor(array.length * ((100 - p) / 100));\n        if (k === 0) {\n            array.sort(function (a, b) {\n                return b - a\n            });\n            return array[k];\n        } else {\n            return selectElement(array, k);\n        }\n\n    },\n\n\n    clamp: function (value, min, max) {\n        return Math.min(Math.max(value, min), max);\n    },\n\n    log2: function (x) {\n        return Math.log(x) / Math.LN2;\n    }\n\n};\n\nfunction selectElement(array, k) {\n\n    // Credit Steve Hanov http://stevehanov.ca/blog/index.php?id=122\n    var heap = new BinaryHeap(),\n        i;\n\n    for (i = 0; i < array.length; i++) {\n\n        var item = array[i];\n\n        // If we have not yet found k items, or the current item is larger than\n        // the smallest item on the heap, add current item\n        if (heap.content.length < k || item > heap.content[0]) {\n            // If the heap is full, remove the smallest element on the heap.\n            if (heap.content.length === k) {\n                var r = heap.pop();\n            }\n            heap.push(item)\n        }\n    }\n\n    return heap.content[0];\n}\n\n\nfunction BinaryHeap() {\n    this.content = [];\n}\n\nBinaryHeap.prototype = {\n    push: function (element) {\n        // Add the new element to the end of the array.\n        this.content.push(element);\n        // Allow it to bubble up.\n        this.bubbleUp(this.content.length - 1);\n    },\n\n    pop: function () {\n        // Store the first element so we can return it later.\n        var result = this.content[0];\n        // Get the element at the end of the array.\n        var end = this.content.pop();\n        // If there are any elements left, put the end element at the\n        // start, and let it sink down.\n        if (this.content.length > 0) {\n            this.content[0] = end;\n            this.sinkDown(0);\n        }\n        return result;\n    },\n\n    remove: function (node) {\n        var length = this.content.length;\n        // To remove a value, we must search through the array to find\n        // it.\n        for (var i = 0; i < length; i++) {\n            if (this.content[i] !== node) continue;\n            // When it is found, the process seen in 'pop' is repeated\n            // to fill up the hole.\n            var end = this.content.pop();\n            // If the element we popped was the one we needed to remove,\n            // we're done.\n            if (i === length - 1) break;\n            // Otherwise, we replace the removed element with the popped\n            // one, and allow it to float up or sink down as appropriate.\n            this.content[i] = end;\n            this.bubbleUp(i);\n            this.sinkDown(i);\n            break;\n        }\n    },\n\n    size: function () {\n        return this.content.length;\n    },\n\n    bubbleUp: function (n) {\n        // Fetch the element that has to be moved.\n        var element = this.content[n], score = element;\n        // When at 0, an element can not go up any further.\n        while (n > 0) {\n            // Compute the parent element's index, and fetch it.\n            var parentN = Math.floor((n + 1) / 2) - 1,\n                parent = this.content[parentN];\n            // If the parent has a lesser score, things are in order and we\n            // are done.\n            if (score >= parent)\n                break;\n\n            // Otherwise, swap the parent with the current element and\n            // continue.\n            this.content[parentN] = element;\n            this.content[n] = parent;\n            n = parentN;\n        }\n    },\n\n    sinkDown: function (n) {\n        // Look up the target element and its score.\n        var length = this.content.length,\n            element = this.content[n],\n            elemScore = element;\n\n        while (true) {\n            // Compute the indices of the child elements.\n            var child2N = (n + 1) * 2, child1N = child2N - 1;\n            // This is used to store the new position of the element,\n            // if any.\n            var swap = null;\n            // If the first child exists (is inside the array)...\n            if (child1N < length) {\n                // Look it up and compute its score.\n                var child1 = this.content[child1N],\n                    child1Score = child1;\n                // If the score is less than our element's, we need to swap.\n                if (child1Score < elemScore)\n                    swap = child1N;\n            }\n            // Do the same checks for the other child.\n            if (child2N < length) {\n                var child2 = this.content[child2N],\n                    child2Score = child2;\n                if (child2Score < (swap == null ? elemScore : child1Score))\n                    swap = child2N;\n            }\n\n            // No need to swap further, we are done.\n            if (swap == null) break;\n\n            // Otherwise, swap and continue.\n            this.content[n] = this.content[swap];\n            this.content[swap] = element;\n            n = swap;\n        }\n    }\n};\n\nexport default IGVMath;\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport IGVMath from \"./igv-math.js\";\nimport {stripQuotes} from \"./stringUtils.js\";\n\nfunction _random(min, max) {\n    return Math.random() * (max - min) + min;\n}\n\nconst IGVColor = {\n\n    rgbListFromHSV: () => {\n\n        let s = 1;\n        let accumulation = [];\n        for (let v = 1; v >= 0.5; v -= .1) {\n            for (let h = 0; h < 1; h += 1 / 28) {\n                const r = \"rgb(\" + IGVColor.hsvToRgb(h, s, v).join(\",\") + \")\";\n                accumulation.push(r);\n            }\n        }\n\n        // add black\n        accumulation.pop();\n        accumulation.push(IGVColor.rgbColor(16, 16, 16));\n\n        return accumulation;\n    },\n\n    rgbToHex: function (rgb) {\n        rgb = rgb.match(/^rgba?[\\s+]?\\([\\s+]?(\\d+)[\\s+]?,[\\s+]?(\\d+)[\\s+]?,[\\s+]?(\\d+)[\\s+]?/i);\n        return (rgb && rgb.length === 4) ? \"#\" +\n            (\"0\" + parseInt(rgb[1], 10).toString(16)).slice(-2) +\n            (\"0\" + parseInt(rgb[2], 10).toString(16)).slice(-2) +\n            (\"0\" + parseInt(rgb[3], 10).toString(16)).slice(-2) : '';\n    },\n\n    hexToRgb: function (hex) {\n\n        var cooked = /^#?([a-f\\d]{2})([a-f\\d]{2})([a-f\\d]{2})$/i.exec(hex);\n\n        if (null === cooked) {\n            return undefined;\n        }\n\n        return \"rgb(\" + parseInt(cooked[1], 16) + \",\" + parseInt(cooked[2], 16) + \",\" + parseInt(cooked[3], 16) + \")\";\n    },\n\n    /**\n     * Converts an HSV color value to RGB. Conversion formula\n     * adapted from http://en.wikipedia.org/wiki/HSV_color_space.\n     * Assumes h, s, and v are contained in the set [0, 1] and\n     * returns r, g, and b in the set [0, 255].\n     *\n     * Credit: https://gist.githubusercontent.com/mjackson/5311256\n     *\n     * @param   h       The hue\n     * @param   s       The saturation\n     * @param   v       The value\n     * @return  Array   The RGB representation\n     */\n    hsvToRgb: function (h, s, v) {\n        var r, g, b;\n\n        var i = Math.floor(h * 6);\n        var f = h * 6 - i;\n        var p = v * (1 - s);\n        var q = v * (1 - f * s);\n        var t = v * (1 - (1 - f) * s);\n\n        switch (i % 6) {\n            case 0:\n                r = v, g = t, b = p;\n                break;\n            case 1:\n                r = q, g = v, b = p;\n                break;\n            case 2:\n                r = p, g = v, b = t;\n                break;\n            case 3:\n                r = p, g = q, b = v;\n                break;\n            case 4:\n                r = t, g = p, b = v;\n                break;\n            case 5:\n                r = v, g = p, b = q;\n                break;\n        }\n\n        return [Math.floor(r * 255), Math.floor(g * 255), Math.floor(b * 255)];\n    },\n\n    /**\n     * Converts an HSL color value to RGB. Conversion formula\n     * adapted from http://en.wikipedia.org/wiki/HSL_color_space.\n     * Assumes h, s, and l are contained in the set [0, 1] and\n     * returns r, g, and b in the set [0, 255].\n     *\n     * Credit: https://gist.githubusercontent.com/mjackson/5311256\n     *\n     * @param   h       The hue\n     * @param   s       The saturation\n     * @param   l       The lightness\n     * @return  Array   The RGB representation\n     */\n    hslToRgb: function (h, s, l) {\n        var r, g, b;\n\n        if (s === 0) {\n            r = g = b = l; // achromatic\n        } else {\n\n\n            var q = l < 0.5 ? l * (1 + s) : l + s - l * s;\n            var p = 2 * l - q;\n\n            r = IGVColor.hue2rgb(p, q, h + 1 / 3);\n            g = IGVColor.hue2rgb(p, q, h);\n            b = IGVColor.hue2rgb(p, q, h - 1 / 3);\n        }\n\n        return [r * 255, g * 255, b * 255];\n    },\n\n    hue2rgb: (p, q, t) => {\n        if (t < 0) t += 1;\n        if (t > 1) t -= 1;\n        if (t < 1 / 6) return p + (q - p) * 6 * t;\n        if (t < 1 / 2) return q;\n        if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;\n        return p;\n    },\n\n    rgbaColor: function (r, g, b, a) {\n\n        r = IGVMath.clamp(r, 0, 255);\n        g = IGVMath.clamp(g, 0, 255);\n        b = IGVMath.clamp(b, 0, 255);\n        a = IGVMath.clamp(a, 0.0, 1.0);\n\n        return \"rgba(\" + r + \",\" + g + \",\" + b + \",\" + a + \")\";\n    },\n\n    rgbColor: function (r, g, b) {\n\n        r = IGVMath.clamp(r, 0, 255);\n        g = IGVMath.clamp(g, 0, 255);\n        b = IGVMath.clamp(b, 0, 255);\n\n        return \"rgb(\" + r + \",\" + g + \",\" + b + \")\";\n    },\n\n    greyScale: function (value) {\n\n        var grey = IGVMath.clamp(value, 0, 255);\n\n        return \"rgb(\" + grey + \",\" + grey + \",\" + grey + \")\";\n    },\n\n    randomGrey: function (min, max) {\n\n        min = IGVMath.clamp(min, 0, 255);\n        max = IGVMath.clamp(max, 0, 255);\n\n        var g = Math.round(_random(min, max)).toString(10);\n\n        return \"rgb(\" + g + \",\" + g + \",\" + g + \")\";\n    },\n\n    randomRGB: function (min, max) {\n\n        min = IGVMath.clamp(min, 0, 255);\n        max = IGVMath.clamp(max, 0, 255);\n\n        var r = Math.round(_random(min, max)).toString(10);\n        var g = Math.round(_random(min, max)).toString(10);\n        var b = Math.round(_random(min, max)).toString(10);\n\n        return \"rgb(\" + r + \",\" + g + \",\" + b + \")\";\n    },\n\n    randomRGBConstantAlpha: function (min, max, alpha) {\n\n        min = IGVMath.clamp(min, 0, 255);\n        max = IGVMath.clamp(max, 0, 255);\n\n        var r = Math.round(_random(min, max)).toString(10);\n        var g = Math.round(_random(min, max)).toString(10);\n        var b = Math.round(_random(min, max)).toString(10);\n\n        return \"rgba(\" + r + \",\" + g + \",\" + b + \",\" + alpha + \")\";\n    },\n\n    addAlpha: function (color, alpha) {\n\n        if(color === \"0\" || color === \".\") {\n            color = \"rgb(0,0,0)\"\n        } else {\n            const c = this.colorNameToHex(color);\n            if (c) {\n                color = c;\n            }\n        }\n\n        var isHex = /(^#[0-9A-F]{6}$)|(^#[0-9A-F]{3}$)/i.test(color);\n\n        if (color.startsWith(\"rgba\")) {\n            const idx = color.lastIndexOf(\",\");\n            return color.substring(0, idx+1) + alpha.toString() + \")\";\n        }\n\n        if (isHex) {\n            color = IGVColor.hexToRgb(color);\n        }\n\n        if (color.startsWith(\"rgb\")) {\n            return color.replace(\"rgb\", \"rgba\").replace(\")\", \", \" + alpha + \")\");\n        } else {\n            console.log(color + \" is not an rgb style string\");\n            return color;\n        }\n    },\n\n    rgbComponents: function (color) {\n\n        if(color === \"0\" || color === \".\") {\n            return [0,0,0];\n        }\n        const isHex = /(^#[0-9A-F]{6}$)|(^#[0-9A-F]{3}$)/i.test(color);\n        if (isHex) {\n            color = IGVColor.hexToRgb(color);\n        } else {\n            if(!color.startsWith(\"rgb\")) {\n                const hex = this.colorNameToHex(color);\n                color = this.hexToRgb(hex);\n            }\n        }\n\n        if (color.startsWith(\"rgb(\")) {\n            return color.substring(4, color.length-1).split(\",\").map(s => Number.parseInt(s.trim()));\n         } else if (color.startsWith(\"rgba(\")) {\n            return color.substring(5, color.length-1).split(\",\").map((s, i) => {\n                s = s.trim();\n                return i === 3 ? Number.parseFloat(s) : Number.parseInt(s)\n            });\n        }\n        else {\n            throw Error(\"Unrecognized color string: color\");\n        }\n    },\n\n    /**\n     *\n     * @param dest  RGB components as an array\n     * @param src  RGB components as an array\n     * @param alpha   alpha transparancy in the range 0-1\n     * @returns {}\n     */\n    getCompositeColor: function (dest, src, alpha) {\n\n        var r = Math.floor(alpha * src[0] + (1 - alpha) * dest[0]),\n            g = Math.floor(alpha * src[1] + (1 - alpha) * dest[1]),\n            b = Math.floor(alpha * src[2] + (1 - alpha) * dest[2]);\n\n        return \"rgb(\" + r + \",\" + g + \",\" + b + \")\";\n\n    },\n\n\n    createColorString: function (str) {\n        // Excel will quote color strings, strip all quotes\n        str = stripQuotes(str);\n\n        if (str.includes(\",\")) {\n            return str.startsWith(\"rgb\") ? str : \"rgb(\" + str + \")\";\n        } else {\n            return str;\n        }\n    },\n\n    darkenLighten: function (color, amt) {\n\n        let src;\n        let hexColor = this.colorNameToHex(color);\n        if(hexColor) {\n            src  = IGVColor.hexToRgb(hexColor);\n        } else {\n            src = color.startsWith('rgb(') ? color : IGVColor.hexToRgb(color);\n        }\n\n        const components = src.replace(\")\", \"\").substring(4).split(\",\");\n\n        const r = Math.max(0, Math.min(255, Number.parseInt(components[0].trim()) + amt));\n        const g = Math.max(0, Math.min(255, Number.parseInt(components[1].trim()) + amt));\n        const b = Math.max(0, Math.min(255, Number.parseInt(components[2].trim()) + amt));\n\n        return 'rgb(' + r.toString() + ',' + g.toString() + ',' + b.toString() + ')';\n\n    },\n\n    /**\n     * Convert html/css color name to hex value.  Adapted from https://gist.github.com/mxfh/4719348\n     * @param colorName\n     * @returns {*}\n     */\n    colorNameToHex: function (colorName) { // color list from http://stackoverflow.com/q/1573053/731179  with added gray/gray\n        const definedColorNames = {\n            \"aliceblue\": \"#f0f8ff\",\n            \"antiquewhite\": \"#faebd7\",\n            \"aqua\": \"#00ffff\",\n            \"aquamarine\": \"#7fffd4\",\n            \"azure\": \"#f0ffff\",\n            \"beige\": \"#f5f5dc\",\n            \"bisque\": \"#ffe4c4\",\n            \"black\": \"#000000\",\n            \"blanchedalmond\": \"#ffebcd\",\n            \"blue\": \"#0000ff\",\n            \"blueviolet\": \"#8a2be2\",\n            \"brown\": \"#a52a2a\",\n            \"burlywood\": \"#deb887\",\n            \"cadetblue\": \"#5f9ea0\",\n            \"chartreuse\": \"#7fff00\",\n            \"chocolate\": \"#d2691e\",\n            \"coral\": \"#ff7f50\",\n            \"cornflowerblue\": \"#6495ed\",\n            \"cornsilk\": \"#fff8dc\",\n            \"crimson\": \"#dc143c\",\n            \"cyan\": \"#00ffff\",\n            \"darkblue\": \"#00008b\",\n            \"darkcyan\": \"#008b8b\",\n            \"darkgoldenrod\": \"#b8860b\",\n            \"darkgray\": \"#a9a9a9\",\n            \"darkgreen\": \"#006400\",\n            \"darkkhaki\": \"#bdb76b\",\n            \"darkmagenta\": \"#8b008b\",\n            \"darkolivegreen\": \"#556b2f\",\n            \"darkorange\": \"#ff8c00\",\n            \"darkorchid\": \"#9932cc\",\n            \"darkred\": \"#8b0000\",\n            \"darksalmon\": \"#e9967a\",\n            \"darkseagreen\": \"#8fbc8f\",\n            \"darkslateblue\": \"#483d8b\",\n            \"darkslategray\": \"#2f4f4f\",\n            \"darkturquoise\": \"#00ced1\",\n            \"darkviolet\": \"#9400d3\",\n            \"deeppink\": \"#ff1493\",\n            \"deepskyblue\": \"#00bfff\",\n            \"dimgray\": \"#696969\",\n            \"dodgerblue\": \"#1e90ff\",\n            \"firebrick\": \"#b22222\",\n            \"floralwhite\": \"#fffaf0\",\n            \"forestgreen\": \"#228b22\",\n            \"fuchsia\": \"#ff00ff\",\n            \"gainsboro\": \"#dcdcdc\",\n            \"ghostwhite\": \"#f8f8ff\",\n            \"gold\": \"#ffd700\",\n            \"goldenrod\": \"#daa520\",\n            \"gray\": \"#808080\",\n            \"green\": \"#008000\",\n            \"greenyellow\": \"#adff2f\",\n            \"honeydew\": \"#f0fff0\",\n            \"hotpink\": \"#ff69b4\",\n            \"indianred \": \"#cd5c5c\",\n            \"indigo \": \"#4b0082\",\n            \"ivory\": \"#fffff0\",\n            \"khaki\": \"#f0e68c\",\n            \"lavender\": \"#e6e6fa\",\n            \"lavenderblush\": \"#fff0f5\",\n            \"lawngreen\": \"#7cfc00\",\n            \"lemonchiffon\": \"#fffacd\",\n            \"lightblue\": \"#add8e6\",\n            \"lightcoral\": \"#f08080\",\n            \"lightcyan\": \"#e0ffff\",\n            \"lightgoldenrodyellow\": \"#fafad2\",\n            \"lightgrey\": \"#d3d3d3\",\n            \"lightgreen\": \"#90ee90\",\n            \"lightpink\": \"#ffb6c1\",\n            \"lightsalmon\": \"#ffa07a\",\n            \"lightseagreen\": \"#20b2aa\",\n            \"lightskyblue\": \"#87cefa\",\n            \"lightslategray\": \"#778899\",\n            \"lightsteelblue\": \"#b0c4de\",\n            \"lightyellow\": \"#ffffe0\",\n            \"lime\": \"#00ff00\",\n            \"limegreen\": \"#32cd32\",\n            \"linen\": \"#faf0e6\",\n            \"magenta\": \"#ff00ff\",\n            \"maroon\": \"#800000\",\n            \"mediumaquamarine\": \"#66cdaa\",\n            \"mediumblue\": \"#0000cd\",\n            \"mediumorchid\": \"#ba55d3\",\n            \"mediumpurple\": \"#9370d8\",\n            \"mediumseagreen\": \"#3cb371\",\n            \"mediumslateblue\": \"#7b68ee\",\n            \"mediumspringgreen\": \"#00fa9a\",\n            \"mediumturquoise\": \"#48d1cc\",\n            \"mediumvioletred\": \"#c71585\",\n            \"midnightblue\": \"#191970\",\n            \"mintcream\": \"#f5fffa\",\n            \"mistyrose\": \"#ffe4e1\",\n            \"moccasin\": \"#ffe4b5\",\n            \"navajowhite\": \"#ffdead\",\n            \"navy\": \"#000080\",\n            \"oldlace\": \"#fdf5e6\",\n            \"olive\": \"#808000\",\n            \"olivedrab\": \"#6b8e23\",\n            \"orange\": \"#ffa500\",\n            \"orangered\": \"#ff4500\",\n            \"orchid\": \"#da70d6\",\n            \"palegoldenrod\": \"#eee8aa\",\n            \"palegreen\": \"#98fb98\",\n            \"paleturquoise\": \"#afeeee\",\n            \"palevioletred\": \"#d87093\",\n            \"papayawhip\": \"#ffefd5\",\n            \"peachpuff\": \"#ffdab9\",\n            \"peru\": \"#cd853f\",\n            \"pink\": \"#ffc0cb\",\n            \"plum\": \"#dda0dd\",\n            \"powderblue\": \"#b0e0e6\",\n            \"purple\": \"#800080\",\n            \"red\": \"#ff0000\",\n            \"rosybrown\": \"#bc8f8f\",\n            \"royalblue\": \"#4169e1\",\n            \"saddlebrown\": \"#8b4513\",\n            \"salmon\": \"#fa8072\",\n            \"sandybrown\": \"#f4a460\",\n            \"seagreen\": \"#2e8b57\",\n            \"seashell\": \"#fff5ee\",\n            \"sienna\": \"#a0522d\",\n            \"silver\": \"#c0c0c0\",\n            \"skyblue\": \"#87ceeb\",\n            \"slateblue\": \"#6a5acd\",\n            \"slategray\": \"#708090\",\n            \"snow\": \"#fffafa\",\n            \"springgreen\": \"#00ff7f\",\n            \"steelblue\": \"#4682b4\",\n            \"tan\": \"#d2b48c\",\n            \"teal\": \"#008080\",\n            \"thistle\": \"#d8bfd8\",\n            \"tomato\": \"#ff6347\",\n            \"turquoise\": \"#40e0d0\",\n            \"violet\": \"#ee82ee\",\n            \"wheat\": \"#f5deb3\",\n            \"white\": \"#ffffff\",\n            \"whitesmoke\": \"#f5f5f5\",\n            \"yellow\": \"#ffff00\",\n            \"yellowgreen\": \"#9acd32\",\n            \"darkgrey\": \"#a9a9a9\",\n            \"darkslategrey\": \"#2f4f4f\",\n            \"dimgrey\": \"#696969\",\n            \"grey\": \"#808080\",\n            \"lightgray\": \"#d3d3d3\",\n            \"lightslategrey\": \"#778899\",\n            \"slategrey\": \"#708090\"\n        };\n        return definedColorNames[colorName];\n    }\n}\n\n\nexport default IGVColor;\n","// Support for oauth token based authorization\n// This class supports explicit setting of an oauth token either globally or for specific hosts.\n//\n// The variable oauth.google.access_token, which becomes igv.oauth.google.access_token on ES5 conversion is\n// supported for backward compatibility\n\nconst DEFAULT_HOST = \"googleapis\"\n\nclass Oauth {\n\n    constructor() {\n        this.oauthTokens = {}\n    }\n\n\n    setToken(token, host) {\n        host = host || DEFAULT_HOST\n        this.oauthTokens[host] = token\n    }\n\n    getToken(host) {\n        host = host || DEFAULT_HOST\n        let token\n        for (let key of Object.keys(this.oauthTokens)) {\n            const regex = wildcardToRegExp(key)\n            if (regex.test(host)) {\n                token = this.oauthTokens[key]\n                break\n            }\n        }\n        return token\n    }\n\n    removeToken(host) {\n        host = host || DEFAULT_HOST\n        for (let key of Object.keys(this.oauthTokens)) {\n            const regex = wildcardToRegExp(key)\n            if (regex.test(host)) {\n                this.oauthTokens[key] = undefined\n            }\n        }\n    }\n\n    // Special object for google -- legacy support\n    // google: {\n    //     setToken: function (token) {\n    //         oauth.setToken(token);\n    //     }\n    // }\n}\n\n\n/**\n * Creates a RegExp from the given string, converting asterisks to .* expressions,\n * and escaping all other characters.\n *\n * credit https://gist.github.com/donmccurdy/6d073ce2c6f3951312dfa45da14a420f\n */\nfunction wildcardToRegExp(s) {\n    return new RegExp('^' + s.split(/\\*+/).map(regExpEscape).join('.*') + '$')\n}\n\n/**\n * RegExp-escapes all characters in the given string.\n *\n * credit https://gist.github.com/donmccurdy/6d073ce2c6f3951312dfa45da14a420f\n */\nfunction regExpEscape(s) {\n    return s.replace(/[|\\\\{}()[\\]^$+*?.]/g, '\\\\$&')\n}\n\nexport default Oauth\n","function isGoogleURL(url) {\n    return (url.includes(\"googleapis\") && !url.includes(\"urlshortener\")) ||\n        isGoogleStorageURL(url) ||\n        isGoogleDriveURL(url)\n}\n\nfunction isGoogleStorageURL(url) {\n    return url.startsWith(\"gs://\") ||\n        url.startsWith(\"https://www.googleapis.com/storage\") ||\n        url.startsWith(\"https://storage.cloud.google.com\") ||\n        url.startsWith(\"https://storage.googleapis.com\");\n}\n\nfunction isGoogleDriveURL(url) {\n    return url.indexOf(\"drive.google.com\") >= 0 || url.indexOf(\"www.googleapis.com/drive\") > 0\n}\n\n/**\n * Translate gs:// urls to https\n * See https://cloud.google.com/storage/docs/json_api/v1\n * @param gsUrl\n * @returns {string|*}\n */\nfunction translateGoogleCloudURL(gsUrl) {\n\n    let {bucket, object} = parseBucketName(gsUrl);\n    object = encode(object);\n\n    const qIdx = gsUrl.indexOf('?');\n    const paramString = (qIdx > 0) ? gsUrl.substring(qIdx) + \"&alt=media\" : \"?alt=media\";\n\n    return `https://storage.googleapis.com/storage/v1/b/${bucket}/o/${object}${paramString}`\n}\n\n/**\n * Parse a google bucket and object name from a google storage URL.  Known forms include\n *\n * gs://BUCKET_NAME/OBJECT_NAME\n * https://storage.googleapis.com/BUCKET_NAME/OBJECT_NAME\n * https://storage.googleapis.com/storage/v1/b/BUCKET_NAME/o/OBJECT_NAME\n * https://www.googleapis.com/storage/v1/b/BUCKET_NAME/o/OBJECT_NAME\"\n * https://storage.googleapis.com/download/storage/v1/b/BUCKET_NAME/o/OBJECT_NAME\n *\n * @param url\n */\nfunction parseBucketName(url) {\n\n    let bucket;\n    let object;\n\n    if (url.startsWith(\"gs://\")) {\n        const i = url.indexOf('/', 5);\n        if (i >= 0) {\n            bucket = url.substring(5, i);\n            const qIdx = url.indexOf('?');\n            object = (qIdx < 0) ? url.substring(i + 1) : url.substring(i + 1, qIdx);\n        }\n\n    } else if (url.startsWith(\"https://storage.googleapis.com\") || url.startsWith(\"https://storage.cloud.google.com\")) {\n        const bucketIdx = url.indexOf(\"/v1/b/\", 8)\n        if (bucketIdx > 0) {\n            const objIdx = url.indexOf(\"/o/\", bucketIdx);\n            if (objIdx > 0) {\n                const queryIdx = url.indexOf(\"?\", objIdx);\n                bucket = url.substring(bucketIdx + 6, objIdx);\n                object = queryIdx > 0 ? url.substring(objIdx + 3, queryIdx) : url.substring(objIdx + 3);\n            }\n\n        } else {\n            const idx1 = url.indexOf(\"/\", 8);\n            const idx2 = url.indexOf(\"/\", idx1+1);\n            const idx3 = url.indexOf(\"?\", idx2);\n            if (idx2 > 0) {\n                bucket = url.substring(idx1+1, idx2);\n                object = idx3 < 0 ? url.substring(idx2+1) : url.substring(idx2+1, idx3);\n            }\n        }\n\n    } else if (url.startsWith(\"https://www.googleapis.com/storage/v1/b\")) {\n        const bucketIdx = url.indexOf(\"/v1/b/\", 8);\n        const objIdx = url.indexOf(\"/o/\", bucketIdx);\n        if (objIdx > 0) {\n            const queryIdx = url.indexOf(\"?\", objIdx);\n            bucket = url.substring(bucketIdx + 6, objIdx);\n            object = queryIdx > 0 ? url.substring(objIdx + 3, queryIdx) : url.substring(objIdx + 3);\n        }\n    }\n\n    if (bucket && object) {\n        return {\n            bucket, object\n        }\n    } else {\n        throw Error(`Unrecognized Google Storage URI: ${url}`)\n    }\n\n}\n\n/**\n * Percent a GCS object name.  See https://cloud.google.com/storage/docs/request-endpoints\n * Specific characters to encode:\n *   !, #, $, &, ', (, ), *, +, ,, /, :, ;, =, ?, @, [, ], and space characters.\n * @param obj\n */\n\nfunction encode(objectName) {\n\n    let result = '';\n    objectName.split('').forEach(function(letter) {\n        if(encodings.has(letter)) {\n            result += encodings.get(letter);\n        } else {\n            result += letter;\n        }\n    })\n    return result;\n}\n\n//\t%23\t%24\t%25\t%26\t%27\t%28\t%29\t%2A\t%2B\t%2C\t%2F\t%3A\t%3B\t%3D\t%3F\t%40\t%5B\t%5D\nconst encodings = new Map();\nencodings.set(\"!\", \"%21\");\nencodings.set(\"#\", \"%23\");\nencodings.set(\"$\", \"%24\");\nencodings.set(\"%\", \"%25\");\nencodings.set(\"&\", \"%26\");\nencodings.set(\"'\", \"%27\");\nencodings.set(\"(\", \"%28\");\nencodings.set(\")\", \"%29\");\nencodings.set(\"*\", \"%2A\");\nencodings.set(\"+\", \"%2B\");\nencodings.set(\",\", \"%2C\");\nencodings.set(\"/\", \"%2F\");\nencodings.set(\":\", \"%3A\");\nencodings.set(\";\", \"%3B\");\nencodings.set(\"=\", \"%3D\");\nencodings.set(\"?\", \"%3F\");\nencodings.set(\"@\", \"%40\");\nencodings.set(\"[\", \"%5B\");\nencodings.set(\"]\", \"%5D\");\nencodings.set(\" \", \"%20\");\n\n// For testing\n//for(let [key, value] of encodings) {\n//    const v2 = encodeURIComponent(key);\n//    console.log(value + \"  \" + v2);\n//}\n\nexport {\n    isGoogleURL, isGoogleDriveURL, isGoogleStorageURL, translateGoogleCloudURL, parseBucketName\n}\n\n\n\n","// Convenience functions for the gapi oAuth library.\n// This wrapper is stateless -- this is important as multiple copies of this module might be present\n// in an application.  All state is attached to the global google  object.\n\nimport {isGoogleDriveURL, isGoogleStorageURL} from \"./googleUtils.js\"\n\nasync function init(config) {\n\n    if (!(google.accounts.oauth2.initTokenClient)) {\n        throw new Error(\"Google accounts token client not loaded (https://accounts.google.com/gsi/client)\")\n    }\n\n    if (isInitialized()) {\n        throw new Error(\"Google client is already initialized\")\n    }\n\n    // Note: callback is added when accessToken is requested\n    const codeClientConfig = {\n        client_id: config.client_id,\n        scope: config.scope || 'https://www.googleapis.com/auth/userinfo.profile',\n        state: config.state || 'igv',\n        error: (err) => {\n            throw new Error(err.type)\n        },\n        hint: config.hint,     // Optional\n        hosted_domain: config.hosted_domain  // Optional\n    }\n\n    const tokenClient = google.accounts.oauth2.initTokenClient(codeClientConfig)\n\n    // Attach an object to keep igv state\n    google.igv = {\n        tokenClient: tokenClient,\n        apiKey: config.apiKey\n    }\n}\n\nfunction isInitialized() {\n    return window.google && window.google.igv\n}\n\n/**\n * Return the current access token if the user is signed in, or undefined otherwise.  This function does not\n * attempt a signIn or request any specfic scopes.\n *\n * @returns access_token || undefined\n */\nfunction getCurrentAccessToken() {\n    return (isInitialized() && google.igv.tokenResponse && Date.now() < google.igv.tokenExpiresAt) ?\n        google.igv.tokenResponse.access_token :\n        undefined\n}\n\n/**\n * Return the of the currently logged in user, if any, as represented by the current access token.  This does not force a login.*\n * @returns {Promise<any>}\n */\nasync function getCurrentUserProfile() {\n    const access_token = getCurrentAccessToken()\n    if (access_token) {\n        const endPoint = \"https://www.googleapis.com/oauth2/v1/userinfo?alt=json\"\n        const response = await fetch(endPoint, {\n            headers: {\n                'Authorization': `Bearer ${access_token}`\n            }\n        })\n        return response.json()\n    } else {\n        return undefined\n    }\n}\n\n\n/**\n * Return a promise for an access token for the given scope.  If the user hasn't authorized the scope request it\n *\n * @param scope\n * @returns {Promise<unknown>}\n */\nasync function getAccessToken(scope) {\n\n    if (!isInitialized()) {\n        throw Error(\"Google oAuth has not been initialized\")\n    }\n\n    if (google.igv.tokenResponse &&\n        Date.now() < google.igv.tokenExpiresAt &&\n        google.accounts.oauth2.hasGrantedAllScopes(google.igv.tokenResponse, scope)) {\n        return google.igv.tokenResponse.access_token\n    } else {\n        const tokenClient = google.igv.tokenClient\n        return new Promise((resolve, reject) => {\n            try {\n                // Settle this promise in the response callback for requestAccessToken()\n                tokenClient.callback = (tokenResponse) => {\n                    if (tokenResponse.error !== undefined) {\n                        reject(tokenResponse)\n                    }\n                    google.igv.tokenResponse = tokenResponse\n                    google.igv.tokenExpiresAt = Date.now() + tokenResponse.expires_in * 1000\n                    resolve(tokenResponse.access_token)\n                }\n                tokenClient.requestAccessToken({scope})\n            } catch (err) {\n                console.log(err)\n            }\n        })\n    }\n}\n\nasync function signIn(scope) {\n\n    if (!isInitialized()) {\n        throw Error(\"Google oAuth has not been initialized\")\n    }\n\n    scope = scope || 'https://www.googleapis.com/auth/userinfo.profile'\n    await getAccessToken(scope)\n\n    if (typeof google.igv.signInListener === 'function') {\n        google.igv.signInListener(undefined !== google.igv.tokenResponse)\n\n    }\n\n    return google.igv.tokenResponse\n\n}\n\nasync function signOut() {\n\n    if (!isInitialized()) {\n        throw Error(\"Google oAuth has not been initialized\")\n    }\n\n    if (google.igv && google.igv.tokenResponse) {\n        google.igv.tokenResponse = undefined\n    }\n\n    if (typeof google.igv.signInListener === 'function') {\n        google.igv.signInListener(false)\n    }\n}\n\nfunction signInListen(fn) {\n    google.igv.signInListener = fn\n}\n\n// gapi.auth2.getAuthInstance().isSignedIn.listen(status => {\n//     const user = gapi.auth2.getAuthInstance().currentUser.get()\n//     queryGoogleAuthenticationStatus(user, status)\n// })\n\nfunction getScopeForURL(url) {\n    if (isGoogleDriveURL(url)) {\n        return \"https://www.googleapis.com/auth/drive.readonly\"\n    } else if (isGoogleStorageURL(url)) {\n        return \"https://www.googleapis.com/auth/devstorage.read_only\"\n    } else {\n        return 'https://www.googleapis.com/auth/userinfo.profile'\n    }\n}\n\nfunction getApiKey() {\n    return google.igv.apiKey\n}\n\n\nexport {\n    init,\n    getAccessToken,\n    getCurrentAccessToken,\n    getScopeForURL,\n    getApiKey,\n    isInitialized,\n    signIn,\n    signOut,\n    getCurrentUserProfile,\n    signInListen\n}\n\n","import {getAccessToken, getApiKey} from \"./googleAuth.js\"\n\n\n/**\n * Return information about a specific google drive URL\n *\n * @param googleDriveURL\n * @returns {Promise<any>}\n */\nasync function getDriveFileInfo(googleDriveURL) {\n\n    const id = getGoogleDriveFileID(googleDriveURL);\n    let endPoint = \"https://www.googleapis.com/drive/v3/files/\" + id + \"?supportsTeamDrives=true\";\n    const apiKey = getApiKey();\n    if (apiKey) {\n        endPoint += \"&key=\" + apiKey;\n    }\n    const response = await fetch(endPoint);\n    let json = await response.json();\n    if (json.error && json.error.code === 404) {\n        let scope = \"https://www.googleapis.com/auth/drive.readonly\"\n        const access_token = await getAccessToken(scope);\n        if (access_token) {\n            const response = await fetch(endPoint, {\n                headers: {\n                    'Authorization': `Bearer ${access_token}`\n                }\n            })\n            json = await response.json();\n            if (json.error) {\n                throw Error(json.error);\n            }\n        } else {\n            throw Error(json.error);\n        }\n    }\n    return json;\n}\n\n/**\n * Return general Google Drive information for the currently logged in user*\n * *\n * @returns {Promise<any>}\n */\nasync function getDriveInfo() {\n    const access_token = await getAccessToken('https://www.googleapis.com/auth/drive.readonly')\n    const endPoint = \"https://www.googleapis.com/drive/v3/about?fields=*\"\n    const response = await fetch(endPoint, {\n        headers: {\n            'Authorization': `Bearer ${access_token}`\n        }\n    })\n    return response.json()\n}\n\n\nfunction getDriveDownloadURL(link) {\n    // Return a google drive download url for the sharable link\n    //https://drive.google.com/open?id=0B-lleX9c2pZFbDJ4VVRxakJzVGM\n    //https://drive.google.com/file/d/1_FC4kCeO8E3V4dJ1yIW7A0sn1yURKIX-/view?usp=sharing\n    var id = getGoogleDriveFileID(link);\n    return id ? \"https://www.googleapis.com/drive/v3/files/\" + id + \"?alt=media&supportsTeamDrives=true\" : link;\n}\n\nfunction getGoogleDriveFileID(link) {\n\n    //https://drive.google.com/file/d/1_FC4kCeO8E3V4dJ1yIW7A0sn1yURKIX-/view?usp=sharing\n    //https://www.googleapis.com/drive/v3/files/1w-tvo6p1SH4p1OaQSVxpkV_EJgGIstWF?alt=media&supportsTeamDrives=true\"\n\n    if (link.includes(\"/open?id=\")) {\n        const i1 = link.indexOf(\"/open?id=\") + 9;\n        const i2 = link.indexOf(\"&\");\n        if (i1 > 0 && i2 > i1) {\n            return link.substring(i1, i2)\n        } else if (i1 > 0) {\n            return link.substring(i1);\n        }\n\n    } else if (link.includes(\"/file/d/\")) {\n        const i1 = link.indexOf(\"/file/d/\") + 8;\n        const i2 = link.lastIndexOf(\"/\");\n        return link.substring(i1, i2);\n\n    } else if (link.startsWith(\"https://www.googleapis.com/drive\")) {\n        let i1 = link.indexOf(\"/files/\")\n        const i2 = link.indexOf(\"?\")\n        if (i1 > 0) {\n            i1 += 7;\n            return i2 > 0 ?\n                link.substring(i1, i2) :\n                link.substring(i1)\n        }\n    }\n\n    throw Error(\"Unknown Google Drive url format: \" + link);\n\n\n}\n\n\n\nexport {getDriveFileInfo, getDriveInfo, getDriveDownloadURL, getGoogleDriveFileID}","// The MIT License (MIT)\n// Adapted from https://github.com/JMPerez/promise-throttle\n//\n// Copyright (c) 2015 José M. Pérez\n//\n// Permission is hereby granted, free of charge, to any person obtaining a copy\n// of this software and associated documentation files (the \"Software\"), to deal\n// in the Software without restriction, including without limitation the rights\n// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n// copies of the Software, and to permit persons to whom the Software is\n// furnished to do so, subject to the following conditions:\n//\n//     The above copyright notice and this permission notice shall be included in all\n// copies or substantial portions of the Software.\n//\n//     THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n//     OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\n// SOFTWARE.\n//\n\n\n'use strict';\n\n/**\n * @constructor\n * @param {Object} options A set op options to pass to the throttle function\n *        @param {number} requestsPerSecond The amount of requests per second\n *                                          the library will limit to\n */\nclass Throttle {\n    constructor(options) {\n        this.requestsPerSecond = options.requestsPerSecond || 10;\n        this.lastStartTime = 0;\n        this.queued = [];\n    }\n\n    /**\n     * Adds a promise\n     * @param {Function} async function to be executed\n     * @param {Object} options A set of options.\n     * @return {Promise} A promise\n     */\n    add(asyncFunction, options) {\n\n        var self = this;\n        return new Promise(function (resolve, reject) {\n            self.queued.push({\n                resolve: resolve,\n                reject: reject,\n                asyncFunction: asyncFunction,\n            });\n            self.dequeue();\n        });\n    }\n\n    /**\n     * Adds all the promises passed as parameters\n     * @param {Function} promises An array of functions that return a promise\n     * @param {Object} options A set of options.\n     * @param {number} options.signal An AbortSignal object that can be used to abort the returned promise\n     * @param {number} options.weight A \"weight\" of each operation resolving by array of promises\n     * @return {Promise} A promise that succeeds when all the promises passed as options do\n     */\n    addAll(promises, options) {\n        var addedPromises = promises.map(function (promise) {\n            return this.add(promise, options);\n        }.bind(this));\n\n        return Promise.all(addedPromises);\n    };\n\n    /**\n     * Dequeues a promise\n     * @return {void}\n     */\n    dequeue() {\n        if (this.queued.length > 0) {\n            var now = new Date(),\n                inc = (1000 / this.requestsPerSecond) + 1,\n                elapsed = now - this.lastStartTime;\n\n            if (elapsed >= inc) {\n                this._execute();\n            } else {\n                // we have reached the limit, schedule a dequeue operation\n                setTimeout(function () {\n                    this.dequeue();\n                }.bind(this), inc - elapsed);\n            }\n        }\n    }\n\n    /**\n     * Executes the promise\n     * @private\n     * @return {void}\n     */\n    async _execute() {\n        this.lastStartTime = new Date();\n        var candidate = this.queued.shift();\n        const f = candidate.asyncFunction;\n        try {\n            const r = await f();\n            candidate.resolve(r);\n        } catch (e) {\n            candidate.reject(e);\n        }\n\n    }\n\n\n}\n\nexport default Throttle;\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport Oauth from \"./oauth.js\"\nimport {isFile} from './fileUtils.js'\nimport {parseUri} from './uriUtils.js'\nimport {ungzip, isgzipped, decodeDataURI} from './bgzf.js'\nimport * as GoogleUtils from './google-utils/googleUtils.js'\nimport * as GoogleAuth from './google-utils/googleAuth.js'\nimport * as GoogleDrive from './google-utils/googleDrive.js'\nimport Throttle from \"./throttle.js\"\n\nclass IGVXhr {\n\n    constructor() {\n        this.apiKey = undefined\n        this.googleThrottle = new Throttle({\n            requestsPerSecond: 8\n        })\n        this.RANGE_WARNING_GIVEN = false\n        this.oauth = new Oauth()\n    }\n\n    setApiKey(key) {\n        this.apiKey = key\n    }\n\n    async loadArrayBuffer(url, options) {\n        options = options || {}\n        if (!options.responseType) {\n            options.responseType = \"arraybuffer\"\n        }\n        if (isFile(url)) {\n            return this._loadFileSlice(url, options)\n        } else {\n            return this.load(url, options)\n        }\n    }\n\n    async loadJson(url, options) {\n        options = options || {}\n        const method = options.method || (options.sendData ? \"POST\" : \"GET\")\n        if (method === \"POST\") {\n            options.contentType = \"application/json\"\n        }\n        const result = await this.loadString(url, options)\n        if (result) {\n            return JSON.parse(result)\n        } else {\n            return result\n        }\n    }\n\n    async loadString(path, options) {\n        options = options || {}\n        if (path instanceof File) {\n            return this._loadStringFromFile(path, options)\n        } else {\n            return this._loadStringFromUrl(path, options)\n        }\n    }\n\n    async load(url, options) {\n\n        options = options || {}\n        const urlType = typeof url\n\n        // Resolve functions, promises, and functions that return promises\n        url = await (typeof url === 'function' ? url() : url)\n\n        if (isFile(url)) {\n            return this._loadFileSlice(url, options)\n        } else if (typeof url.startsWith === 'function') {   // Test for string\n            if (url.startsWith(\"data:\")) {\n                const buffer = decodeDataURI(url).buffer\n                if (options.range) {\n                    const rangeEnd = options.range.size ? options.range.start + options.range.size : buffer.byteLength\n                    return buffer.slice(options.range.start, rangeEnd)\n                } else {\n                    return buffer\n                }\n            } else {\n                if (url.startsWith(\"https://drive.google.com\")) {\n                    url = GoogleDrive.getDriveDownloadURL(url)\n                }\n                if (GoogleUtils.isGoogleDriveURL(url) || url.startsWith(\"https://www.dropbox.com\")) {\n                    return this.googleThrottle.add(async () => {\n                        return this._loadURL(url, options)\n                    })\n                } else {\n                    return this._loadURL(url, options)\n                }\n            }\n        } else {\n            throw Error(`url must be either a 'File', 'string', 'function', or 'Promise'.  Actual type: ${urlType}`)\n        }\n    }\n\n    async _loadURL(url, options) {\n\n        const self = this\n        const _url = url   // The unmodified URL, needed in case of an oAuth retry\n\n        url = mapUrl(url)\n\n        options = options || {}\n\n        let oauthToken = options.oauthToken || this.getOauthToken(url)\n        if (oauthToken) {\n            oauthToken = await (typeof oauthToken === 'function' ? oauthToken() : oauthToken)\n        }\n\n        return new Promise(function (resolve, reject) {\n\n            // Various Google tansformations\n            if (GoogleUtils.isGoogleURL(url) && !isGoogleStorageSigned(url)) {\n                if (GoogleUtils.isGoogleStorageURL(url)) {\n                    url = GoogleUtils.translateGoogleCloudURL(url)\n                }\n                url = addApiKey(url)\n\n                if (GoogleUtils.isGoogleDriveURL(url)) {\n                    addTeamDrive(url)\n                }\n\n                // If we have an access token try it, but don't force a signIn or request for scopes yet\n                if (!oauthToken) {\n                    oauthToken = getCurrentGoogleAccessToken()\n                }\n            }\n\n            const headers = options.headers || {}\n            if (oauthToken) {\n                addOauthHeaders(headers, oauthToken)\n            }\n            const range = options.range\n\n\n            const xhr = new XMLHttpRequest()\n            const sendData = options.sendData || options.body\n            const method = options.method || (sendData ? \"POST\" : \"GET\")\n            const responseType = options.responseType\n            const contentType = options.contentType\n            const mimeType = options.mimeType\n\n            xhr.open(method, url)\n\n            if (options.timeout) {\n                xhr.timeout = options.timeout\n            }\n\n            if (range) {\n                let rangeEnd = \"\"\n                if (range.size) {\n                    rangeEnd = range.start + range.size - 1\n                }\n                xhr.setRequestHeader(\"Range\", \"bytes=\" + range.start + \"-\" + rangeEnd)\n                //      xhr.setRequestHeader(\"Cache-Control\", \"no-cache\");    <= This can cause CORS issues, disabled for now\n            }\n            if (contentType) {\n                xhr.setRequestHeader(\"Content-Type\", contentType)\n            }\n            if (mimeType) {\n                xhr.overrideMimeType(mimeType)\n            }\n            if (responseType) {\n                xhr.responseType = responseType\n            }\n            if (headers) {\n                for (let key of Object.keys(headers)) {\n                    const value = headers[key]\n                    xhr.setRequestHeader(key, value)\n                }\n            }\n\n            // NOTE: using withCredentials with servers that return \"*\" for access-allowed-origin will fail\n            if (options.withCredentials === true) {\n                xhr.withCredentials = true\n            }\n\n            xhr.onload = async function (event) {\n\n                // when the url points to a local file, the status is 0\n                if (xhr.status === 0 || (xhr.status >= 200 && xhr.status <= 300)) {\n                    if (\"HEAD\" === options.method) {\n                        // Support fetching specific headers.  Attempting to fetch all headers can be problematic with CORS\n                        const headers = options.requestedHeaders || ['content-length']\n                        const headerMap = {}\n                        for (let h of headers) {\n                            headerMap[h] = xhr.getResponseHeader(h)\n                        }\n                        resolve(headerMap)\n                    } else {\n                        // Assume \"GET\" or \"POST\"\n                        if (range && xhr.status !== 206 && range.start !== 0) {\n\n                            // For small files a range starting at 0 can return the whole file => 200\n                            // Provide just the slice we asked for, throw out the rest quietly\n                            // If file is large warn user\n                            if (xhr.response.length > 100000 && !self.RANGE_WARNING_GIVEN) {\n                                alert(`Warning: Range header ignored for URL: ${url}.  This can have severe performance impacts.`)\n                            }\n                            resolve(xhr.response.slice(range.start, range.start + range.size))\n                        } else {\n                            resolve(xhr.response)\n                        }\n                    }\n                } else if (xhr.status === 416) {\n                    handleError(Error(`416 Unsatisfiable Range`))\n                } else if ((typeof gapi !== \"undefined\") &&\n                    ((xhr.status === 404 || xhr.status === 401 || xhr.status === 403) &&\n                        GoogleUtils.isGoogleURL(url)) &&\n                    !options.retries) {\n                    tryGoogleAuth()\n\n                } else {\n                    if (xhr.status === 403) {\n                        handleError(\"Access forbidden: \" + url)\n                    } else {\n                        handleError(xhr.status)\n                    }\n                }\n            }\n\n\n            xhr.onerror = function (event) {\n                if (GoogleUtils.isGoogleURL(url) && !options.retries) {\n                    tryGoogleAuth()\n                } else {\n                    handleError(\"Error accessing resource: \" + url + \" Status: \" + xhr.status)\n                }\n            }\n\n            xhr.ontimeout = function (event) {\n                handleError(\"Timed out\")\n            }\n\n            xhr.onabort = function (event) {\n                console.log(\"Aborted\")\n                reject(event)\n            }\n\n            try {\n                xhr.send(sendData)\n            } catch (e) {\n                if (GoogleUtils.isGoogleURL(url) && !options.retries) {\n                    tryGoogleAuth()\n                } else {\n                    handleError(e)\n                }\n            }\n\n\n            function handleError(error) {\n                if (reject) {\n                    reject(error)\n                } else {\n                    throw error\n                }\n            }\n\n            async function tryGoogleAuth() {\n                try {\n                    const accessToken = await fetchGoogleAccessToken(_url)\n                    options.retries = 1\n                    options.oauthToken = accessToken\n                    const response = await self.load(_url, options)\n                    resolve(response)\n                } catch (e) {\n                    if (e.error) {\n                        const msg = e.error.startsWith(\"popup_blocked\") ?\n                            \"Google login popup blocked by browser.\" :\n                            e.error\n                        alert(msg)\n                    } else {\n                        handleError(e)\n                    }\n                }\n            }\n        })\n\n    }\n\n    async _loadFileSlice(localfile, options) {\n\n        let blob = (options && options.range) ?\n            localfile.slice(options.range.start, options.range.start + options.range.size) :\n            localfile\n\n        const arrayBuffer = await blob.arrayBuffer()\n\n        if (\"arraybuffer\" === options.responseType) {\n            return arrayBuffer\n        } else {\n            return arrayBufferToString(arrayBuffer)\n        }\n    }\n\n    async _loadStringFromFile(localfile, options) {\n\n        const blob = options.range ? localfile.slice(options.range.start, options.range.start + options.range.size) : localfile\n        const arrayBuffer = await blob.arrayBuffer()\n        return arrayBufferToString(arrayBuffer)\n    }\n\n    async _loadStringFromUrl(url, options) {\n\n        options = options || {}\n        options.responseType = \"arraybuffer\"\n        const data = await this.load(url, options)\n        return arrayBufferToString(data)\n    }\n\n    /**\n     * Explicity set an oAuth token for use with given host.  If host is undefined token is used for google api access*\n     * @param token\n     * @param host\n     */\n    setOauthToken(token, host) {\n        this.oauth.setToken(token, host)\n    }\n\n    /**\n     * Return an oauth token for the URL if we have one.  This method does not force sign-in, and the token may\n     * or may not be valid.  Sign-in is triggered on request failure.\n     * *\n     * @param url\n     * @returns {*}\n     */\n    getOauthToken(url) {\n\n        // Google is the default provider, don't try to parse host for google URLs\n        const host = GoogleUtils.isGoogleURL(url) ?\n            undefined :\n            parseUri(url).host\n\n        // First check the explicit settings (i.e. token set through the API)\n        let token = this.oauth.getToken(host)\n        if (token) {\n            return token\n        } else if (host === undefined) {\n            // Now try Google oauth tokens previously obtained.  This will return undefined if google oauth is not\n            // configured.\n            const googleToken = getCurrentGoogleAccessToken()\n            if (googleToken && googleToken.expires_at > Date.now()) {\n                return googleToken.access_token\n            }\n        }\n    }\n\n    /**\n     * This method should only be called when it is known the server supports HEAD requests.  It is used to recover\n     * from 416 errors from out-of-spec WRT range request servers.  Notably Globus.\n     * * *\n     * @param url\n     * @param options\n     * @returns {Promise<unknown>}\n     */\n    async getContentLength(url, options) {\n        options = options || {}\n        options.method = 'HEAD'\n        options.requestedHeaders = ['content-length']\n        const headerMap = await this._loadURL(url, options)\n        const contentLengthString = headerMap['content-length']\n        return contentLengthString ? Number.parseInt(contentLengthString) : 0\n    }\n\n}\n\nfunction isGoogleStorageSigned(url) {\n    return url.indexOf(\"X-Goog-Signature\") > -1\n}\n\n\n/**\n * Return a Google oAuth token, triggering a sign in if required.   This method should not be called until we know\n * a token is required, that is until we've tried the url and received a 401, 403, or 404.\n *\n * @param url\n * @returns the oauth token\n */\nasync function fetchGoogleAccessToken(url) {\n    if (GoogleAuth.isInitialized()) {\n        const scope = GoogleAuth.getScopeForURL(url)\n        const access_token = await GoogleAuth.getAccessToken(scope)\n        return access_token\n    } else {\n        throw Error(\n            `Authorization is required, but Google oAuth has not been initalized. Contact your site administrator for assistance.`)\n    }\n}\n\n/**\n * Return the current google access token, if one exists.  Do not triger signOn or request additional scopes.\n * @returns {undefined|access_token}\n */\nfunction getCurrentGoogleAccessToken() {\n    if (GoogleAuth.isInitialized()) {\n        const access_token = GoogleAuth.getCurrentAccessToken()\n        return access_token\n    } else {\n        return undefined\n    }\n}\n\nfunction addOauthHeaders(headers, acToken) {\n    if (acToken) {\n        headers[\"Cache-Control\"] = \"no-cache\"\n        headers[\"Authorization\"] = \"Bearer \" + acToken\n    }\n    return headers\n}\n\n\nfunction addApiKey(url) {\n    let apiKey = igvxhr.apiKey\n    if (!apiKey && typeof gapi !== \"undefined\") {\n        apiKey = gapi.apiKey\n    }\n    if (apiKey !== undefined && !url.includes(\"key=\")) {\n        const paramSeparator = url.includes(\"?\") ? \"&\" : \"?\"\n        url = url + paramSeparator + \"key=\" + apiKey\n    }\n    return url\n}\n\nfunction addTeamDrive(url) {\n    if (url.includes(\"supportsTeamDrive\")) {\n        return url\n    } else {\n        const paramSeparator = url.includes(\"?\") ? \"&\" : \"?\"\n        url = url + paramSeparator + \"supportsTeamDrive=true\"\n    }\n}\n\nfunction parseResponseHeaders(headers) {\n\n    // Convert the header string into an array of individual headers\n    const arr = headers.trim().split(/[\\r\\n]+/)\n\n    // Create a map of header names to values\n    const headerMap = {}\n    for (let line of arr) {\n        const parts = line.split(\": \")\n        const header = parts.shift()\n        const value = parts.join(\": \")\n        headerMap[header] = value\n    }\n\n    return headerMap\n}\n\n/**\n * Perform some well-known url mappings.\n * @param url\n */\nfunction mapUrl(url) {\n\n    if (url.startsWith(\"https://www.dropbox.com\")) {\n        return url.replace(\"//www.dropbox.com\", \"//dl.dropboxusercontent.com\")\n    } else if (url.startsWith(\"https://drive.google.com\")) {\n        return GoogleDrive.getDriveDownloadURL(url)\n    } else if (url.includes(\"//www.broadinstitute.org/igvdata\")) {\n        return url.replace(\"//www.broadinstitute.org/igvdata\", \"//data.broadinstitute.org/igvdata\")\n    } else if (url.includes(\"//igvdata.broadinstitute.org\")) {\n        return url.replace(\"//igvdata.broadinstitute.org\", \"//s3.amazonaws.com/igv.broadinstitute.org\")\n    } else if (url.includes(\"//igv.genepattern.org\")) {\n        return url.replace(\"//igv.genepattern.org\", \"//igv-genepattern-org.s3.amazonaws.com\")\n    } else if (url.startsWith(\"ftp://ftp.ncbi.nlm.nih.gov/geo\")) {\n        return url.replace(\"ftp://\", \"https://\")\n    } else {\n        return url\n    }\n}\n\n\nfunction arrayBufferToString(arraybuffer) {\n\n    let plain\n    if (isgzipped(arraybuffer)) {\n        plain = ungzip(arraybuffer)\n    } else {\n        plain = new Uint8Array(arraybuffer)\n    }\n\n    if ('TextDecoder' in getGlobalObject()) {\n        return new TextDecoder().decode(plain)\n    } else {\n        return decodeUTF8(plain)\n    }\n}\n\n/**\n * Use when TextDecoder is not available (primarily IE).\n *\n * From: https://gist.github.com/Yaffle/5458286\n *\n * @param octets\n * @returns {string}\n */\nfunction decodeUTF8(octets) {\n    var string = \"\"\n    var i = 0\n    while (i < octets.length) {\n        var octet = octets[i]\n        var bytesNeeded = 0\n        var codePoint = 0\n        if (octet <= 0x7F) {\n            bytesNeeded = 0\n            codePoint = octet & 0xFF\n        } else if (octet <= 0xDF) {\n            bytesNeeded = 1\n            codePoint = octet & 0x1F\n        } else if (octet <= 0xEF) {\n            bytesNeeded = 2\n            codePoint = octet & 0x0F\n        } else if (octet <= 0xF4) {\n            bytesNeeded = 3\n            codePoint = octet & 0x07\n        }\n        if (octets.length - i - bytesNeeded > 0) {\n            var k = 0\n            while (k < bytesNeeded) {\n                octet = octets[i + k + 1]\n                codePoint = (codePoint << 6) | (octet & 0x3F)\n                k += 1\n            }\n        } else {\n            codePoint = 0xFFFD\n            bytesNeeded = octets.length - i\n        }\n        string += String.fromCodePoint(codePoint)\n        i += bytesNeeded + 1\n    }\n    return string\n}\n\n\nfunction getGlobalObject() {\n    if (typeof self !== 'undefined') {\n        return self\n    }\n    if (typeof global !== 'undefined') {\n        return global\n    } else {\n        return window\n    }\n}\n\nfunction isAmazonV4Signed(url) {\n    return url.indexOf(\"X-Amz-Signature\") > -1\n}\n\n\nconst igvxhr = new IGVXhr()\n\nexport default igvxhr\nexport {arrayBufferToString, mapUrl}\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/** An implementation of an interval tree, following the explanation.\n * from CLR.\n *\n * Public interface:\n *   Constructor  IntervalTree\n *   Insertion    insert\n *   Search       findOverlapping\n */\n\nvar BLACK = 1;\nvar RED = 2;\n\nvar NIL = {}\nNIL.color = BLACK;\nNIL.parent = NIL;\nNIL.left = NIL;\nNIL.right = NIL;\n\n\nclass IntervalTree {\n\n    constructor() {\n        this.root = NIL;\n    }\n\n    insert(start, end, value) {\n\n        var interval = new Interval(start, end, value);\n        var x = new Node(interval);\n        this.treeInsert(x);\n        x.color = RED;\n        while (x !== this.root && x.parent.color === RED) {\n            if (x.parent === x.parent.parent.left) {\n                let y = x.parent.parent.right;\n                if (y.color === RED) {\n                    x.parent.color = BLACK;\n                    y.color = BLACK;\n                    x.parent.parent.color = RED;\n                    x = x.parent.parent;\n                } else {\n                    if (x === x.parent.right) {\n                        x = x.parent;\n                        leftRotate.call(this, x);\n                    }\n                    x.parent.color = BLACK;\n                    x.parent.parent.color = RED;\n                    rightRotate.call(this, x.parent.parent);\n                }\n            } else {\n                let y = x.parent.parent.left;\n                if (y.color === RED) {\n                    x.parent.color = BLACK;\n                    y.color = BLACK;\n                    x.parent.parent.color = RED;\n                    x = x.parent.parent;\n                } else {\n                    if (x === x.parent.left) {\n                        x = x.parent;\n                        rightRotate.call(this, x);\n                    }\n                    x.parent.color = BLACK;\n                    x.parent.parent.color = RED;\n                    leftRotate.call(this, x.parent.parent);\n                }\n            }\n        }\n        this.root.color = BLACK;\n    }\n\n    /**\n     *\n     * @param start - query interval\n     * @param end - query interval\n     * @returns Array of all intervals overlapping the query region\n     */\n    findOverlapping(start, end) {\n\n\n        var searchInterval = new Interval(start, end, 0);\n\n        if (this.root === NIL) return [];\n\n        var intervals = searchAll.call(this, searchInterval, this.root, []);\n\n        if (intervals.length > 1) {\n            intervals.sort(function (i1, i2) {\n                return i1.low - i2.low;\n            });\n        }\n\n        return intervals;\n    }\n\n    /**\n     * Dump info on intervals to console.  For debugging.\n     */\n    logIntervals() {\n\n        logNode(this.root, 0);\n\n        function logNode(node, indent) {\n\n            var space = \"\";\n            for (var i = 0; i < indent; i++) space += \" \";\n            console.log(space + node.interval.low + \" \" + node.interval.high); // + \" \" + (node.interval.value ? node.interval.value : \" null\"));\n\n            indent += 5;\n\n            if (node.left !== NIL) logNode(node.left, indent);\n            if (node.right !== NIL) logNode(node.right, indent);\n        }\n\n    }\n\n    mapIntervals(func) {\n\n        applyInterval(this.root);\n\n        function applyInterval(node) {\n\n            func(node.interval);\n\n            if (node.left !== NIL) applyInterval(node.left);\n            if (node.right !== NIL) applyInterval(node.right);\n        }\n    }\n\n\n    /**\n     * Note:  Does not maintain RB constraints,  this is done post insert\n     *\n     * @param x  a Node\n     */\n    treeInsert(x) {\n        var node = this.root;\n        var y = NIL;\n        while (node !== NIL) {\n            y = node;\n            if (x.interval.low <= node.interval.low) {\n                node = node.left;\n            } else {\n                node = node.right;\n            }\n        }\n        x.parent = y;\n\n        if (y === NIL) {\n            this.root = x;\n            x.left = x.right = NIL;\n        } else {\n            if (x.interval.low <= y.interval.low) {\n                y.left = x;\n            } else {\n                y.right = x;\n            }\n        }\n\n        applyUpdate.call(this, x);\n    }\n}\n\nfunction searchAll(interval, node, results) {\n\n    if (node.interval.overlaps(interval)) {\n        results.push(node.interval);\n    }\n\n    if (node.left !== NIL && node.left.max >= interval.low) {\n        searchAll.call(this, interval, node.left, results);\n    }\n\n    if (node.right !== NIL && node.right.min <= interval.high) {\n        searchAll.call(this, interval, node.right, results);\n    }\n\n    return results;\n}\n\nfunction leftRotate(x) {\n    var y = x.right;\n    x.right = y.left;\n    if (y.left !== NIL) {\n        y.left.parent = x;\n    }\n    y.parent = x.parent;\n    if (x.parent === NIL) {\n        this.root = y;\n    } else {\n        if (x.parent.left === x) {\n            x.parent.left = y;\n        } else {\n            x.parent.right = y;\n        }\n    }\n    y.left = x;\n    x.parent = y;\n\n    applyUpdate.call(this, x);\n    // no need to apply update on y, since it'll y is an ancestor\n    // of x, and will be touched by applyUpdate().\n}\n\n\nfunction rightRotate(x) {\n    var y = x.left;\n    x.left = y.right;\n    if (y.right !== NIL) {\n        y.right.parent = x;\n    }\n    y.parent = x.parent;\n    if (x.parent === NIL) {\n        this.root = y;\n    } else {\n        if (x.parent.right === x) {\n            x.parent.right = y;\n        } else {\n            x.parent.left = y;\n        }\n    }\n    y.right = x;\n    x.parent = y;\n\n\n    applyUpdate.call(this, x);\n    // no need to apply update on y, since it'll y is an ancestor\n    // of x, and will be touched by applyUpdate().\n}\n\n\n// Applies the statistic update on the node and its ancestors.\nfunction applyUpdate(node) {\n    while (node !== NIL) {\n        var nodeMax = node.left.max > node.right.max ? node.left.max : node.right.max;\n        var intervalHigh = node.interval.high;\n        node.max = nodeMax > intervalHigh ? nodeMax : intervalHigh;\n\n        var nodeMin = node.left.min < node.right.min ? node.left.min : node.right.min;\n        var intervalLow = node.interval.low;\n        node.min = nodeMin < intervalLow ? nodeMin : intervalLow;\n\n        node = node.parent;\n    }\n}\n\n\nclass Interval {\n    constructor(low, high, value) {\n        this.low = low;\n        this.high = high;\n        this.value = value;\n    }\n\n    equals(other) {\n        if (!other) {\n            return false;\n        }\n        if (this === other) {\n            return true;\n        }\n        return (this.low === other.low &&\n            this.high === other.high);\n\n    }\n\n    compareTo(other) {\n        if (this.low < other.low)\n            return -1;\n        if (this.low > other.low)\n            return 1;\n\n        if (this.high < other.high)\n            return -1;\n        if (this.high > other.high)\n            return 1;\n\n        return 0;\n    }\n\n    /**\n     * Returns true if this interval overlaps the other.\n     */\n    overlaps(other) {\n            return (this.low <= other.high && other.low <= this.high);\n    }\n}\n\nfunction Node(interval) {\n    this.parent = NIL;\n    this.left = NIL;\n    this.right = NIL;\n    this.interval = interval;\n    this.color = RED;\n}\n\n\n//\n//\n//    function minimum(node) {\n//        while (node.left != NIL) {\n//            node = node.left;\n//        }\n//        return node;\n//    }\n//\n//\n//    function maximum(node) {\n//\n//        while (node.right != NIL) {\n//            node = node.right;\n//        }\n//        return node;\n//    }\n//\n//\n//    function successor(x) {\n//\n//        if (x.right != NIL) {\n//            return minimum(x.right);\n//        }\n//        var y = x.parent;\n//        while (y != NIL && x == y.right) {\n//            x = y;\n//            y = y.parent;\n//        }\n//        return y;\n//    }\n//\n//\n//    function predecessor(x) {\n//        if (x.left != NIL) {\n//            return maximum(x.left);\n//        }\n//        var y = x.parent;\n//        while (y != NIL && x == y.left) {\n//            x = y;\n//            y = y.parent;\n//        }\n//        return y;\n//    }\n//\n//\n//\n//    allRedNodesFollowConstraints = function (node) {\n//        if (node == NIL)\n//            return true;\n//\n//        if (node.color == BLACK) {\n//            return (this.allRedNodesFollowConstraints(node.left) &&\n//                this.allRedNodesFollowConstraints(node.right));\n//        }\n//\n//        // At this point, we know we're on a RED node.\n//        return (node.left.color == BLACK &&\n//            node.right.color == BLACK &&\n//            this.allRedNodesFollowConstraints(node.left) &&\n//            this.allRedNodesFollowConstraints(node.right));\n//    }\n//\n//\n//    // Check that both ends are equally balanced in terms of black height.\n//    isBalancedBlackHeight = function (node) {\n//        if (node == NIL)\n//            return true;\n//        return (blackHeight(node.left) == blackHeight(node.right) &&\n//            this.isBalancedBlackHeight(node.left) &&\n//            this.isBalancedBlackHeight(node.right));\n//    }\n//\n//\n//    // The black height of a node should be left/right equal.\n//    blackHeight = function (node) {\n//        if (node == NIL)\n//            return 0;\n//        var leftBlackHeight = blackHeight(node.left);\n//        if (node.color == BLACK) {\n//            return leftBlackHeight + 1;\n//        } else {\n//            return leftBlackHeight;\n//        }\n//    }\n\n\n/**\n * Test code: make sure that the tree has all the properties\n * defined by Red Black trees and interval trees\n * <p/>\n * o.  Root is black.\n * <p/>\n * o.  NIL is black.\n * <p/>\n * o.  Red nodes have black children.\n * <p/>\n * o.  Every path from root to leaves contains the same number of\n * black nodes.\n * <p/>\n * o.  getMax(node) is the maximum of any interval rooted at that node..\n * <p/>\n * This code is expensive, and only meant to be used for\n * assertions and testing.\n */\n//\n//    isValid = function () {\n//        if (this.root.color != BLACK) {\n//            logger.warn(\"root color is wrong\");\n//            return false;\n//        }\n//        if (NIL.color != BLACK) {\n//            logger.warn(\"NIL color is wrong\");\n//            return false;\n//        }\n//        if (allRedNodesFollowConstraints(this.root) == false) {\n//            logger.warn(\"red node doesn't follow constraints\");\n//            return false;\n//        }\n//        if (isBalancedBlackHeight(this.root) == false) {\n//            logger.warn(\"black height unbalanced\");\n//            return false;\n//        }\n//\n//        return hasCorrectMaxFields(this.root) &&\n//            hasCorrectMinFields(this.root);\n//    }\n//\n//\n//    hasCorrectMaxFields = function (node) {\n//        if (node == NIL)\n//            return true;\n//        return (getRealMax(node) == (node.max) &&\n//            this.hasCorrectMaxFields(node.left) &&\n//            this.hasCorrectMaxFields(node.right));\n//    }\n//\n//\n//    hasCorrectMinFields = function (node) {\n//        if (node == NIL)\n//            return true;\n//        return (getRealMin(node) == (node.min) &&\n//            this.hasCorrectMinFields(node.left) &&\n//            this.hasCorrectMinFields(node.right));\n//    }\n\nexport default IntervalTree;\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport IntervalTree from \"./intervalTree.js\";\n\n/**\n * Object for caching lists of features.  Supports effecient queries for sub-range  (chr, start, end)\n *\n * @param featureList\n * @param The genomic range spanned by featureList (optional)\n * @constructor\n */\n\nclass FeatureCache {\n\n    constructor(featureList, genome, range) {\n\n        featureList = featureList || [];\n        this.treeMap = this.buildTreeMap(featureList, genome);\n        this.range = range;\n        this.count = featureList.length;\n    }\n\n    containsRange(genomicRange) {\n        // No range means cache contains all features\n        return (this.range === undefined || this.range.contains(genomicRange.chr, genomicRange.start, genomicRange.end));\n    }\n\n    queryFeatures(chr, start, end) {\n\n        const tree = this.treeMap[chr];\n\n        if (!tree) return [];\n\n        const intervals = tree.findOverlapping(start, end);\n\n        if (intervals.length === 0) {\n            return [];\n        } else {\n            // Trim the list of features in the intervals to those\n            // overlapping the requested range.\n            // Assumption: features are sorted by start position\n\n            const featureList = [];\n            const all = this.allFeatures[chr];\n            if (all) {\n                for (let interval of intervals) {\n                    const indexRange = interval.value;\n                    for (let i = indexRange.start; i < indexRange.end; i++) {\n                        let feature = all[i];\n                        if (feature.start > end) break;\n                        else if (feature.end >= start) {\n                            featureList.push(feature);\n                        }\n                    }\n                }\n                featureList.sort(function (a, b) {\n                    return a.start - b.start;\n                });\n            }\n            return featureList;\n        }\n    };\n\n    /**\n     * Returns all features, unsorted.\n     *\n     * @returns {Array}\n     */\n    getAllFeatures() {\n        return this.allFeatures;\n    }\n\n    buildTreeMap(featureList, genome) {\n\n        const treeMap = {};\n        const chromosomes = [];\n        this.allFeatures = {};\n\n        if (featureList) {\n            for (let feature of featureList) {\n\n                let chr = feature.chr;\n                // Translate to \"official\" name\n                if (genome) {\n                    chr = genome.getChromosomeName(chr);\n                }\n\n                let geneList = this.allFeatures[chr];\n                if (!geneList) {\n                    chromosomes.push(chr);\n                    geneList = [];\n                    this.allFeatures[chr] = geneList;\n                }\n                geneList.push(feature);\n            }\n\n\n            // Now build interval tree for each chromosome\n            for (let chr of chromosomes) {\n                const chrFeatures = this.allFeatures[chr];\n                chrFeatures.sort(function (f1, f2) {\n                    return (f1.start === f2.start ? 0 : (f1.start > f2.start ? 1 : -1));\n                });\n                treeMap[chr] = buildIntervalTree(chrFeatures);\n            }\n        }\n\n        return treeMap;\n    }\n}\n\n/**\n * Build an interval tree from the feature list for fast interval based queries.   We lump features in groups\n * of 10, or total size / 100,   to reduce size of the tree.\n *\n * @param featureList\n */\nfunction buildIntervalTree(featureList) {\n\n    const tree = new IntervalTree();\n    const len = featureList.length;\n    const chunkSize = Math.max(10, Math.round(len / 10));\n\n    for (let i = 0; i < len; i += chunkSize) {\n        const e = Math.min(len, i + chunkSize);\n        const subArray = new IndexRange(i, e); //featureList.slice(i, e);\n        const iStart = featureList[i].start;\n        //\n        let iEnd = iStart;\n        for (let j = i; j < e; j++) {\n            iEnd = Math.max(iEnd, featureList[j].end);\n        }\n        tree.insert(iStart, iEnd, subArray);\n    }\n\n    return tree;\n}\n\n\nclass IndexRange {\n    constructor(start, end) {\n        this.start = start;\n        this.end = end;\n    }\n}\n\nexport default FeatureCache;","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport IntervalTree from \"./intervalTree.js\";\n\nconst FeatureUtils = {\n\n    packFeatures: function (features, maxRows, sorted) {\n\n        var start;\n        var end;\n\n        if (!features) return;\n\n        maxRows = maxRows || 10000;\n\n        if (!sorted) {\n            features.sort(function (a, b) {\n                return a.start - b.start;\n            });\n        }\n\n\n        if (features.length === 0) {\n            return [];\n\n        } else {\n\n            var bucketList = [],\n                allocatedCount = 0,\n                lastAllocatedCount = 0,\n                nextStart,\n                row,\n                index,\n                bucket,\n                feature,\n                gap = 2,\n                bucketStart;\n\n            start = features[0].start;\n            end = features[features.length - 1].start;\n\n            bucketStart = Math.max(start, features[0].start);\n            nextStart = bucketStart;\n\n            features.forEach(function (alignment) {\n\n                var buckListIndex = Math.max(0, alignment.start - bucketStart);\n                if (bucketList[buckListIndex] === undefined) {\n                    bucketList[buckListIndex] = [];\n                }\n                bucketList[buckListIndex].push(alignment);\n            });\n\n\n            row = 0;\n\n\n            while (allocatedCount < features.length && row <= maxRows) {\n\n\n                while (nextStart <= end) {\n\n                    bucket = undefined;\n\n                    while (!bucket && nextStart <= end) {\n\n                        index = nextStart - bucketStart;\n                        if (bucketList[index] === undefined) {\n                            ++nextStart;                     // No buckets at this index\n                        } else {\n                            bucket = bucketList[index];\n                        }\n\n                    } // while (bucket)\n\n                    if (!bucket) {\n                        break;\n                    }\n                    feature = bucket.pop();\n                    if (0 === bucket.length) {\n                        bucketList[index] = undefined;\n                    }\n\n                    feature.row = row;\n\n                    nextStart = feature.end + gap;\n                    ++allocatedCount;\n\n                } // while (nextStart)\n\n                row++;\n                nextStart = bucketStart;\n\n                if (allocatedCount === lastAllocatedCount) break;   // Protect from infinite loops\n\n                lastAllocatedCount = allocatedCount;\n\n            } // while (allocatedCount)\n\n        }\n    },\n\n\n    /**\n     * Find features overlapping the given interval.  It is assumed that all features share the same chromosome.\n     *\n     * TODO -- significant overlap with FeatureCache, refactor to combine\n     *\n     * @param featureList\n     * @param start\n     * @param end\n     */\n    findOverlapping: function (featureList, start, end) {\n\n        if (!featureList || featureList.length === 0) {\n            return [];\n        } else {\n            const tree = buildIntervalTree(featureList);\n            const intervals = tree.findOverlapping(start, end);\n\n            if (intervals.length === 0) {\n                return [];\n            } else {\n                // Trim the list of features in the intervals to those\n                // overlapping the requested range.\n                // Assumption: features are sorted by start position\n\n                featureList = [];\n\n                intervals.forEach(function (interval) {\n                    const intervalFeatures = interval.value;\n                    const len = intervalFeatures.length;\n                    for (let i = 0; i < len; i++) {\n                        const feature = intervalFeatures[i];\n                        if (feature.start > end) break;\n                        else if (feature.end > start) {\n                            featureList.push(feature);\n                        }\n                    }\n                });\n\n                featureList.sort(function (a, b) {\n                    return a.start - b.start;\n                });\n\n                return featureList;\n            }\n        }\n\n    }\n}\n\n\n/**\n * Build an interval tree from the feature list for fast interval based queries.   We lump features in groups\n * of 10, or total size / 100,   to reduce size of the tree.\n *\n * @param featureList\n */\nfunction buildIntervalTree(featureList) {\n\n    const tree = new IntervalTree();\n    const len = featureList.length;\n    const chunkSize = Math.max(10, Math.round(len / 100));\n\n    featureList.sort(function (f1, f2) {\n        return (f1.start === f2.start ? 0 : (f1.start > f2.start ? 1 : -1));\n    });\n\n    for (let i = 0; i < len; i += chunkSize) {\n        const e = Math.min(len, i + chunkSize);\n        const subArray = featureList.slice(i, e);\n        const iStart = subArray[0].start;\n        let iEnd = iStart;\n        subArray.forEach(function (feature) {\n            iEnd = Math.max(iEnd, feature.end);\n        });\n        tree.insert(iStart, iEnd, subArray);\n    }\n\n    return tree;\n}\n\nexport default FeatureUtils;\n","import {IGVMath} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst appleCrayonPalette =\n    {\n        licorice: \"#000000\",\n        lead: \"#1e1e1e\",\n        tungsten: \"#3a3a3a\",\n        iron: \"#545453\",\n        steel: \"#6e6e6e\",\n        tin: \"#878687\",\n        nickel: \"#888787\",\n        aluminum: \"#a09fa0\",\n        magnesium: \"#b8b8b8\",\n        silver: \"#d0d0d0\",\n        mercury: \"#e8e8e8\",\n        snow: \"white\",\n        //\n        cayenne: \"#891100\",\n        mocha: \"#894800\",\n        aspargus: \"#888501\",\n        fern: \"#458401\",\n        clover: \"#028401\",\n        moss: \"#018448\",\n        teal: \"#008688\",\n        ocean: \"#004a88\",\n        midnight: \"#001888\",\n        eggplant: \"#491a88\",\n        plum: \"#891e88\",\n        maroon: \"#891648\",\n        //\n        maraschino: \"#ff2101\",\n        tangerine: \"#ff8802\",\n        lemon: \"#fffa03\",\n        lime: \"#83f902\",\n        spring: \"#05f802\",\n        sea_foam: \"#03f987\",\n        turquoise: \"#00fdff\",\n        aqua: \"#008cff\",\n        blueberry: \"#002eff\",\n        grape: \"#8931ff\",\n        magenta: \"#ff39ff\",\n        strawberry: \"#ff2987\",\n        //\n        salmon: \"#ff726e\",\n        cantaloupe: \"#ffce6e\",\n        banana: \"#fffb6d\",\n        honeydew: \"#cefa6e\",\n        flora: \"#68f96e\",\n        spindrift: \"#68fbd0\",\n        ice: \"#68fdff\",\n        sky: \"#6acfff\",\n        orchid: \"#6e76ff\",\n        lavender: \"#d278ff\",\n        bubblegum: \"#ff7aff\",\n        carnation: \"#ff7fd3\"\n    }\n\nconst appleCrayonRGBPalette =\n    {\n        cantaloupe: {r: 255, g: 206, b: 110},\n        honeydew: {r: 206, g: 250, b: 110},\n        spindrift: {r: 104, g: 251, b: 208},\n        sky: {r: 106, g: 207, b: 255},\n        lavender: {r: 210, g: 120, b: 255},\n        carnation: {r: 255, g: 127, b: 211},\n        licorice: {r: 0, g: 0, b: 0},\n        snow: {r: 255, g: 255, b: 255},\n        salmon: {r: 255, g: 114, b: 110},\n        banana: {r: 255, g: 251, b: 109},\n        flora: {r: 104, g: 249, b: 110},\n        ice: {r: 104, g: 253, b: 255},\n        orchid: {r: 110, g: 118, b: 255},\n        bubblegum: {r: 255, g: 122, b: 255},\n        lead: {r: 30, g: 30, b: 30},\n        mercury: {r: 232, g: 232, b: 232},\n        tangerine: {r: 255, g: 136, b: 2},\n        lime: {r: 131, g: 249, b: 2},\n        sea_foam: {r: 3, g: 249, b: 135},\n        aqua: {r: 0, g: 140, b: 255},\n        grape: {r: 137, g: 49, b: 255},\n        strawberry: {r: 255, g: 41, b: 135},\n        tungsten: {r: 58, g: 58, b: 58},\n        silver: {r: 208, g: 208, b: 208},\n        maraschino: {r: 255, g: 33, b: 1},\n        lemon: {r: 255, g: 250, b: 3},\n        spring: {r: 5, g: 248, b: 2},\n        turquoise: {r: 0, g: 253, b: 255},\n        blueberry: {r: 0, g: 46, b: 255},\n        magenta: {r: 255, g: 57, b: 255},\n        iron: {r: 84, g: 84, b: 83},\n        magnesium: {r: 184, g: 184, b: 184},\n        mocha: {r: 137, g: 72, b: 0},\n        fern: {r: 69, g: 132, b: 1},\n        moss: {r: 1, g: 132, b: 72},\n        ocean: {r: 0, g: 74, b: 136},\n        eggplant: {r: 73, g: 26, b: 136},\n        maroon: {r: 137, g: 22, b: 72},\n        steel: {r: 110, g: 110, b: 110},\n        aluminum: {r: 160, g: 159, b: 160},\n        cayenne: {r: 137, g: 17, b: 0},\n        aspargus: {r: 136, g: 133, b: 1},\n        clover: {r: 2, g: 132, b: 1},\n        teal: {r: 0, g: 134, b: 136},\n        midnight: {r: 0, g: 24, b: 136},\n        plum: {r: 137, g: 30, b: 136},\n        tin: {r: 135, g: 134, b: 135},\n        nickel: {r: 136, g: 135, b: 135}\n    }\n\nfunction appleCrayonRGB(name) {\n    const {r, g, b} = appleCrayonRGBPalette[name]\n    return `rgb(${r},${g},${b})`\n}\n\nfunction appleCrayonRGBA(name, alpha) {\n    const {r, g, b} = appleCrayonRGBPalette[name]\n    return `rgba(${r},${g},${b},${alpha})`\n}\n\nconst colorPalettes = {\n\n    Set1:\n        [\n            \"rgb(228,26,28)\",\n            \"rgb(55,126,184)\",\n            \"rgb(77,175,74)\",\n            \"rgb(166,86,40)\",\n            \"rgb(152,78,163)\",\n            \"rgb(255,127,0)\",\n            \"rgb(247,129,191)\",\n            \"rgb(153,153,153)\",\n            \"rgb(255,255,51)\"\n        ],\n\n    Dark2:\n        [\n            \"rgb(27,158,119)\",\n            \"rgb(217,95,2)\",\n            \"rgb(117,112,179)\",\n            \"rgb(231,41,138)\",\n            \"rgb(102,166,30)\",\n            \"rgb(230,171,2)\",\n            \"rgb(166,118,29)\",\n            \"rgb(102,102,102)\"\n        ],\n\n    Set2:\n        [\n            \"rgb(102, 194,165)\",\n            \"rgb(252,141,98)\",\n            \"rgb(141,160,203)\",\n            \"rgb(231,138,195)\",\n            \"rgb(166,216,84)\",\n            \"rgb(255,217,47)\",\n            \"rgb(229,196,148)\",\n            \"rgb(179,179,179)\"\n        ],\n\n    Set3:\n        [\n            \"rgb(141,211,199)\",\n            \"rgb(255,255,179)\",\n            \"rgb(190,186,218)\",\n            \"rgb(251,128,114)\",\n            \"rgb(128,177,211)\",\n            \"rgb(253,180,98)\",\n            \"rgb(179,222,105)\",\n            \"rgb(252,205,229)\",\n            \"rgb(217,217,217)\",\n            \"rgb(188,128,189)\",\n            \"rgb(204,235,197)\",\n            \"rgb(255,237,111)\"\n        ],\n\n    Pastel1:\n        [\n            \"rgb(251,180,174)\",\n            \"rgb(179,205,227)\",\n            \"rgb(204,235,197)\",\n            \"rgb(222,203,228)\",\n            \"rgb(254,217,166)\",\n            \"rgb(255,255,204)\",\n            \"rgb(229,216,189)\",\n            \"rgb(253,218,236)\"\n        ],\n\n    Pastel2:\n        [\n            \"rgb(173,226,207)\",\n            \"rgb(253,205,172)\",\n            \"rgb(203,213,232)\",\n            \"rgb(244,202,228)\",\n            \"rgb(230,245,201)\",\n            \"rgb(255,242,174)\",\n            \"rgb(243,225,206)\"\n        ],\n\n    Accent:\n        [\n            \"rgb(127,201,127)\",\n            \"rgb(190,174,212)\",\n            \"rgb(253,192,134)\",\n            \"rgb(255,255,153)\",\n            \"rgb(56,108,176)\",\n            \"rgb(240,2,127)\",\n            \"rgb(191,91,23)\"\n        ]\n}\n\nclass PaletteColorTable {\n\n    constructor(palette) {\n        this.colors = colorPalettes[palette]\n        if (!Array.isArray(this.colors)) this.colors = []\n        this.colorTable = {}\n        this.nextIdx = 0\n        this.colorGenerator = new RandomColorGenerator()\n    }\n\n    getColor(key) {\n        if (!this.colorTable.hasOwnProperty(key)) {\n            if (this.nextIdx < this.colors.length) {\n                this.colorTable[key] = this.colors[this.nextIdx]\n            } else {\n                this.colorTable[key] = this.colorGenerator.get()\n            }\n            this.nextIdx++\n        }\n        return this.colorTable[key]\n    }\n}\n\nclass ColorTable {\n    constructor(colors) {\n        this.colorTable = colors || {}\n        this.nextIdx = 0\n        this.colorGenerator = new RandomColorGenerator()\n    }\n\n    getColor(key) {\n        if (!this.colorTable.hasOwnProperty(key)) {\n            if (this.colorTable.hasOwnProperty(\"*\")) {\n                return this.colorTable[\"*\"]\n            }\n            this.colorTable[key] = this.colorGenerator.get()\n        }\n        return this.colorTable[key]\n    }\n}\n\n// Random color generator from https://github.com/sterlingwes/RandomColor/blob/master/rcolor.js\n// Free to use & distribute under the MIT license\n// Wes Johnson (@SterlingWes)\n//\n// inspired by http://martin.ankerl.com/2009/12/09/how-to-create-random-colors-programmatically/\nfunction RandomColorGenerator() {\n    this.hue = Math.random()\n    this.goldenRatio = 0.618033988749895\n    this.hexwidth = 2\n}\n\nRandomColorGenerator.prototype.hsvToRgb = function (h, s, v) {\n    var h_i = Math.floor(h * 6),\n        f = h * 6 - h_i,\n        p = v * (1 - s),\n        q = v * (1 - f * s),\n        t = v * (1 - (1 - f) * s),\n        r = 255,\n        g = 255,\n        b = 255\n    switch (h_i) {\n        case 0:\n            r = v, g = t, b = p\n            break\n        case 1:\n            r = q, g = v, b = p\n            break\n        case 2:\n            r = p, g = v, b = t\n            break\n        case 3:\n            r = p, g = q, b = v\n            break\n        case 4:\n            r = t, g = p, b = v\n            break\n        case 5:\n            r = v, g = p, b = q\n            break\n    }\n    return [Math.floor(r * 256), Math.floor(g * 256), Math.floor(b * 256)]\n}\n\nRandomColorGenerator.prototype.padHex = function (str) {\n    if (str.length > this.hexwidth) return str\n    return new Array(this.hexwidth - str.length + 1).join('0') + str\n}\n\nRandomColorGenerator.prototype.get = function (saturation, value) {\n    this.hue += this.goldenRatio\n    this.hue %= 1\n    if (typeof saturation !== \"number\") saturation = 0.5\n    if (typeof value !== \"number\") value = 0.95\n    var rgb = this.hsvToRgb(this.hue, saturation, value)\n\n    return \"#\" + this.padHex(rgb[0].toString(16))\n        + this.padHex(rgb[1].toString(16))\n        + this.padHex(rgb[2].toString(16))\n\n}\n\nconst randomColorGenerator = new RandomColorGenerator()\n\nfunction randomColor() {\n    return randomColorGenerator.get()\n}\n\n// Returns a random number between min (inclusive) and max (exclusive)\nfunction random(min, max) {\n    return Math.random() * (max - min) + min\n}\n\n// Used to generate color list\n// let hexs = [];\n// for (let rgbList of Object.values(colorPalettes)) {\n//     for (let rgb of rgbList) {\n//         let obj = {};\n//         obj[ rgb ] = IGVColor.rgbToHex(rgb);\n//         hexs.push(obj);\n//     }\n// }\n\nfunction randomRGBConstantAlpha(min, max, alpha) {\n\n    min = IGVMath.clamp(min, 0, 255)\n    max = IGVMath.clamp(max, 0, 255)\n\n    const r = Math.round(Math.random() * (max - min) + min).toString(10)\n    const g = Math.round(Math.random() * (max - min) + min).toString(10)\n    const b = Math.round(Math.random() * (max - min) + min).toString(10)\n    return `rgba(${r},${g},${b}, ${alpha})`\n\n}\n\nfunction rgbaColor(r, g, b, a) {\n    r = IGVMath.clamp(r, 0, 255)\n    g = IGVMath.clamp(g, 0, 255)\n    b = IGVMath.clamp(b, 0, 255)\n    a = IGVMath.clamp(a, 0.0, 1.0)\n    return `rgba(${r}, ${g}, ${b}, ${a})`\n}\n\nfunction rgbColor(r, g, b) {\n    r = IGVMath.clamp(r, 0, 255)\n    g = IGVMath.clamp(g, 0, 255)\n    b = IGVMath.clamp(b, 0, 255)\n    return `rgb(${r}, ${g}, ${b})`\n}\n\nfunction greyScale(value) {\n    value = IGVMath.clamp(value, 0, 255)\n    return `rgb(${value}, ${value}, ${value})`\n}\n\nfunction randomRGB(min, max) {\n\n    min = IGVMath.clamp(min, 0, 255)\n    max = IGVMath.clamp(max, 0, 255)\n\n    const r = Math.round(Math.random() * (max - min) + min).toString(10)\n    const g = Math.round(Math.random() * (max - min) + min).toString(10)\n    const b = Math.round(Math.random() * (max - min) + min).toString(10)\n    return `rgb(${r},${g},${b})`\n\n}\n\nfunction randomGrey(min, max) {\n\n    min = IGVMath.clamp(min, 0, 255)\n    max = IGVMath.clamp(max, 0, 255)\n\n    const value = Math.round(Math.random() * (max - min) + min).toString(10)\n    return `rgb(${value},${value},${value})`\n\n}\n\nfunction rgbaStringTokens(rgbaString) {\n\n    if (rgbaString.startsWith('rgba(')) {\n\n        const [ignore, pass0 ] = rgbaString.split('(')\n\n        const [ rgba ] = pass0.split(')')\n\n        return rgba.split(',').map((string, index) => index < 3 ? parseInt(string) : parseFloat(string))\n\n    } else {\n        return undefined\n    }\n}\n\nexport {\n    appleCrayonRGB,\n    appleCrayonRGBA,\n    appleCrayonPalette,\n    ColorTable,\n    PaletteColorTable,\n    randomColor,\n    rgbaColor,\n    rgbColor,\n    greyScale,\n    randomGrey,\n    randomRGB,\n    randomRGBConstantAlpha,\n    rgbaStringTokens\n}\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of ctx software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and ctx permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n// Collection of helper functions for canvas rendering.  The \"ctx\" paramter in these functions is a canvas 2d context.\n//\n// Example usage\n//\n//    IGVGraphics.strokeLine(context, 0, 0, 10, 10);\n//\n\nimport {randomRGB} from \"./util/colorPalletes.js\";\n\nvar debug = false\n\nvar log = function (msg) {\n    if (debug) {\n        var d = new Date()\n        var time = d.getHours() + \":\" + d.getMinutes() + \":\" + d.getSeconds()\n        if (typeof console != \"undefined\") {\n            console.log(\"igv-canvas: \" + time + \" \" + msg)\n        }\n    }\n}\n\n\nconst IGVGraphics = {\n\n    configureHighDPICanvas: function (ctx, w, h) {\n\n        const scaleFactor = window.devicePixelRatio\n        // const scaleFactor = 1\n\n        ctx.canvas.style.width = (`${w}px`)\n        ctx.canvas.width = Math.floor(scaleFactor * w)\n\n        ctx.canvas.style.height = (`${h}px`)\n        ctx.canvas.height = Math.floor(scaleFactor * h)\n\n        ctx.scale(scaleFactor, scaleFactor)\n\n    },\n\n    setProperties: function (ctx, properties) {\n\n        for (var key in properties) {\n            if (properties.hasOwnProperty(key)) {\n                var value = properties[key]\n                ctx[key] = value\n            }\n        }\n    },\n\n    strokeLine: function (ctx, x1, y1, x2, y2, properties) {\n\n        x1 = Math.floor(x1) + 0.5\n        y1 = Math.floor(y1) + 0.5\n        x2 = Math.floor(x2) + 0.5\n        y2 = Math.floor(y2) + 0.5\n\n        log(\"stroke line, prop: \" + properties)\n\n        if (properties) {\n            ctx.save()\n            IGVGraphics.setProperties(ctx, properties)\n        }\n\n        ctx.beginPath()\n        ctx.moveTo(x1, y1)\n        ctx.lineTo(x2, y2)\n        ctx.stroke()\n\n        if (properties) ctx.restore()\n    },\n\n    fillRect: function (ctx, x, y, w, h, properties) {\n\n        var c\n        x = Math.round(x)\n        y = Math.round(y)\n\n        if (properties) {\n            ctx.save()\n            IGVGraphics.setProperties(ctx, properties)\n        }\n\n        ctx.fillRect(x, y, w, h)\n\n        if (properties) ctx.restore()\n    },\n\n    fillPolygon: function (ctx, x, y, properties) {\n        if (properties) {\n            ctx.save()\n            IGVGraphics.setProperties(ctx, properties)\n        }\n        doPath(ctx, x, y)\n        ctx.fill()\n        if (properties) ctx.restore()\n    },\n\n    strokePolygon: function (ctx, x, y, properties) {\n        if (properties) {\n            ctx.save()\n            IGVGraphics.setProperties(ctx, properties)\n        }\n        doPath(ctx, x, y)\n        ctx.stroke()\n        if (properties) ctx.restore()\n    },\n\n    fillText: function (ctx, text, x, y, properties, transforms) {\n\n        if (properties || transforms) {\n            ctx.save()\n        }\n\n        if (properties) {\n            IGVGraphics.setProperties(ctx, properties)\n        }\n\n        if (transforms) {\n            // Slow path with context saving and extra translate\n            ctx.translate(x, y)\n\n            for (var transform in transforms) {\n                var value = transforms[transform]\n\n                // TODO: Add error checking for robustness\n                if (transform === 'translate') {\n                    ctx.translate(value['x'], value['y'])\n                }\n                if (transform === 'rotate') {\n                    ctx.rotate(value['angle'] * Math.PI / 180)\n                }\n            }\n\n            ctx.fillText(text, 0, 0)\n        } else {\n            ctx.fillText(text, x, y)\n        }\n\n        if (properties || transforms) ctx.restore()\n    },\n\n    strokeText: function (ctx, text, x, y, properties, transforms) {\n\n\n        if (properties || transforms) {\n            ctx.save()\n        }\n\n        if (properties) {\n            IGVGraphics.setProperties(ctx, properties)\n        }\n\n        if (transforms) {\n            ctx.translate(x, y)\n\n            for (var transform in transforms) {\n                var value = transforms[transform]\n\n                // TODO: Add error checking for robustness\n                if (transform === 'translate') {\n                    ctx.translate(value['x'], value['y'])\n                }\n                if (transform === 'rotate') {\n                    ctx.rotate(value['angle'] * Math.PI / 180)\n                }\n            }\n\n            ctx.strokeText(text, 0, 0)\n        } else {\n            ctx.strokeText(text, x, y)\n        }\n\n        if (properties || transforms) ctx.restore()\n    },\n\n    strokeCircle: function (ctx, x, y, radius, properties) {\n        if (properties) {\n            ctx.save()\n            IGVGraphics.setProperties(ctx, properties)\n        }\n        ctx.beginPath()\n        ctx.arc(x, y, radius, 0, 2 * Math.PI)\n        ctx.stroke()\n        if (properties) ctx.restore()\n    },\n\n    fillCircle: function (ctx, x, y, radius, properties) {\n        if (properties) {\n            ctx.save()\n            IGVGraphics.setProperties(ctx, properties)\n        }\n        ctx.beginPath()\n        ctx.arc(x, y, radius, 0, 2 * Math.PI)\n        ctx.fill()\n        if (properties) ctx.restore()\n    },\n\n    drawArrowhead: function (ctx, x, y, size, lineWidth) {\n\n        ctx.save()\n        if (!size) {\n            size = 5\n        }\n        if (lineWidth) {\n            ctx.lineWidth = lineWidth\n        }\n        ctx.beginPath()\n        ctx.moveTo(x, y - size / 2)\n        ctx.lineTo(x, y + size / 2)\n        ctx.lineTo(x + size, y)\n        ctx.lineTo(x, y - size / 2)\n        ctx.closePath()\n        ctx.fill()\n        ctx.restore()\n    },\n\n    dashedLine: function (ctx, x1, y1, x2, y2, dashLen, properties = {}) {\n        if (dashLen === undefined) dashLen = 2\n        ctx.setLineDash([dashLen, dashLen])\n        IGVGraphics.strokeLine(ctx, x1, y1, x2, y2, properties)\n        ctx.setLineDash([])\n    },\n\n    roundRect: function (ctx, x, y, width, height, radius, fill, stroke) {\n\n        if (typeof stroke == \"undefined\") {\n            stroke = true\n        }\n        if (typeof radius === \"undefined\") {\n            radius = 5\n        }\n        ctx.beginPath()\n        ctx.moveTo(x + radius, y)\n        ctx.lineTo(x + width - radius, y)\n        ctx.quadraticCurveTo(x + width, y, x + width, y + radius)\n        ctx.lineTo(x + width, y + height - radius)\n        ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height)\n        ctx.lineTo(x + radius, y + height)\n        ctx.quadraticCurveTo(x, y + height, x, y + height - radius)\n        ctx.lineTo(x, y + radius)\n        ctx.quadraticCurveTo(x, y, x + radius, y)\n        ctx.closePath()\n        if (stroke) {\n            ctx.stroke()\n        }\n        if (fill) {\n            ctx.fill()\n        }\n    },\n    polygon: function (ctx, x, y, fill, stroke) {\n\n        if (typeof stroke == \"undefined\") {\n            stroke = true\n        }\n\n        ctx.beginPath()\n        var len = x.length\n        ctx.moveTo(x[0], y[0])\n        for (var i = 1; i < len; i++) {\n            ctx.lineTo(x[i], y[i])\n            // this.moveTo(x[i], y[i]);\n        }\n\n        ctx.closePath()\n        if (stroke) {\n            ctx.stroke()\n        }\n        if (fill) {\n            ctx.fill()\n        }\n    },\n\n    drawRandomColorVerticalLines: ctx => {\n        for (let x = 0; x < ctx.canvas.width; x++) {\n            IGVGraphics.fillRect(ctx, x, 0, 1, ctx.canvas.height, { fillStyle: randomRGB(100, 250) })\n        }\n    },\n\n    labelTransformWithContext: (ctx, exe) => {\n        ctx.translate(exe, 0);\n        ctx.scale(-1, 1);\n        ctx.translate(-exe, 0);\n    }\n\n}\n\nfunction doPath(ctx, x, y) {\n\n\n    var i, len = x.length\n    for (i = 0; i < len; i++) {\n        x[i] = Math.round(x[i])\n        y[i] = Math.round(y[i])\n    }\n\n    ctx.beginPath()\n    ctx.moveTo(x[0], y[0])\n    for (i = 1; i < len; i++) {\n        ctx.lineTo(x[i], y[i])\n    }\n    ctx.closePath()\n}\n\nexport default IGVGraphics\n\n","import { AlertDialog } from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass Alert {\n    constructor(parent) {\n        this.dialog = new AlertDialog(parent)\n\n    }\n\n    present(alert, callback) {\n        this.dialog.present(alert, callback)\n    }\n}\n\nexport default Alert\n","const FileFormats = {\n\n    gwascatalog: {\n        fields: [\n            'bin',\n            'chr',\n            'start',\n            'end',\n            'name',\n            'pubMedID',\n            'author',\n            'pubDate',\n            'journal',\n            'title',\n            'trait',\n            'initSample',\n            'replSample',\n            'region',\n            'genes',\n            'riskAllele',\n            'riskAlFreq',\n            'pValue',\n            'pValueDesc',\n            'orOrBeta',\n            'ci95',\n            'platform',\n            'cnv'\n        ]\n    },\n\n    wgrna: {\n        fields:\n            [\n                'bin',\n                'chr',\n                'start',\n                'end',\n                'name',\n                'score',\n                'strand',\n                'thickStart',\n                'thickEnd',\n                'type'\n            ]\n    },\n\n    cpgislandext: {\n        fields:\n\n            [\n                'bin',\n                'chr',\n                'start',\n                'end',\n                'name',\n                'length',\n                'cpgNum',\n                'gcNum',\n                'perCpg',\n                'perGc',\n                'obsExp'\n            ]\n    },\n\n    clinVarMain: {\n        fields: [\n            'chr1',\n            'start',\n            'end',\n            'name',\n            'score',\n            'strand',\n            'thickStart',\n            'thickEnd',\n            'reserved',\n            'blockCount',  // Number of blocks\n            'blockSizes',  // Comma separated list of block sizes\n            'chromStarts', // Start positions relative to chromStart\n            'origName',    // NM_198053.2(CD247):c.462C>T (p.Asp154=)\tClinVar Variation Report\n            'clinSign',    // Likely benign\tClinical significance\n            'reviewStatus', // \tbased on: criteria provided,single submitter\tReview Status\n            'type',         // single nucleotide variant\tType of Variant\n            'geneId', \t    // CD247\tGene Symbol\n            'snpId',       //\t181656780\tdbSNP ID\n            'nsvId',       //\t\tdbVar ID\n            'rcvAcc',      //\tRCV000642347\tClinVar Allele Submission\n            'testedInGtr', //\tN\tGenetic Testing Registry\n            'phenotypeList', //\tImmunodeficiency due to defect in cd3-zeta\tPhenotypes\n            'phenotype', //\tMedGen:C1857798, OMIM:610163\tPhenotype identifiers\n            'origin', //\tgermline\tData origin\n            'assembly', //\tGRCh37\tGenome assembly\n            'cytogenetic', //\t1q24.2\tCytogenetic status\n            'hgvsCod', //\tNM_198053.2:c.462C>T\tNucleotide HGVS\n            'hgvsProt', //\tNP_932170.1:p.Asp154=\tProtein HGVS\n            'numSubmit', //\t1\tNumber of submitters\n            'lastEval', //\tDec 19,2017\tLast evaluation\n            'guidelines', //\t\tGuidelines\n            'otherIds'\n        ]\n    }\n}\n\nexport default FileFormats","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {FileUtils, GoogleAuth, GoogleDrive, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport {DOMUtils} from \"../../node_modules/igv-ui/dist/igv-ui.js\"\n\nconst extend = function (parent, child) {\n\n    child.prototype = Object.create(parent.prototype)\n    child.prototype.constructor = child\n    child.prototype._super = Object.getPrototypeOf(child.prototype)\n    return child\n}\n\n/**\n * Test if the given value is a string or number.  Not using typeof as it fails on boxed primitives.\n *\n * @param value\n * @returns boolean\n */\n\nfunction isSimpleType(value) {\n    const simpleTypes = new Set([\"boolean\", \"number\", \"string\", \"symbol\"])\n    const valueType = typeof value\n    return (value !== undefined && (simpleTypes.has(valueType) || value.substring || value.toFixed))\n}\n\nfunction buildOptions(config, options) {\n\n    var defaultOptions = {\n        oauthToken: config.oauthToken,\n        headers: config.headers,\n        withCredentials: config.withCredentials,\n        filename: config.filename\n    }\n\n    return Object.assign(defaultOptions, options)\n}\n\n/**\n * isMobile test from http://detectmobilebrowsers.com\n * TODO -- improve UI design so this isn't neccessary\n * @returns {boolean}\n */\n\n// igv.isMobile = function () {\n//\n//     const a = (navigator.userAgent || navigator.vendor || window.opera);\n//     return (/(android|bb\\d+|meego).+mobile|avantgo|bada\\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(a) ||\n//         /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\\-(n|u)|c55\\/|capi|ccwa|cdm\\-|cell|chtm|cldc|cmd\\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\\-s|devi|dica|dmob|do(c|p)o|ds(12|\\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\\-|_)|g1 u|g560|gene|gf\\-5|g\\-mo|go(\\.w|od)|gr(ad|un)|haie|hcit|hd\\-(m|p|t)|hei\\-|hi(pt|ta)|hp( i|ip)|hs\\-c|ht(c(\\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\\-(20|go|ma)|i230|iac( |\\-|\\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\\/)|klon|kpt |kwc\\-|kyo(c|k)|le(no|xi)|lg( g|\\/(k|l|u)|50|54|\\-[a-w])|libw|lynx|m1\\-w|m3ga|m50\\/|ma(te|ui|xo)|mc(01|21|ca)|m\\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\\-2|po(ck|rt|se)|prox|psio|pt\\-g|qa\\-a|qc(07|12|21|32|60|\\-[2-7]|i\\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\\-|oo|p\\-)|sdk\\/|se(c(\\-|0|1)|47|mc|nd|ri)|sgh\\-|shar|sie(\\-|m)|sk\\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\\-|v\\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\\-|tdg\\-|tel(i|m)|tim\\-|t\\-mo|to(pl|sh)|ts(70|m\\-|m3|m5)|tx\\-9|up(\\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\\-|your|zeto|zte\\-/i.test(a.substr(0, 4)))\n//\n// }\n\nconst doAutoscale = function (features) {\n    var min, max\n\n    if (features && features.length > 0) {\n        min = Number.MAX_VALUE\n        max = -Number.MAX_VALUE\n\n        for(let f of features) {\n            if (!Number.isNaN(f.value)) {\n                min = Math.min(min, f.value)\n                max = Math.max(max, f.value)\n            }\n        }\n\n        // Insure we have a zero baseline\n        if (max > 0) min = Math.min(0, min)\n        if (max < 0) max = 0\n    } else {\n        // No features -- default\n        min = 0\n        max = 100\n    }\n\n    return {min: min, max: max}\n}\n\nconst validateGenomicExtent = function (chromosomeLengthBP, genomicExtent, minimumBP) {\n\n    let ss = genomicExtent.start\n    let ee = genomicExtent.end\n\n    if (undefined === ee) {\n\n        ss -= minimumBP / 2\n        ee = ss + minimumBP\n\n        if (ee > chromosomeLengthBP) {\n            ee = chromosomeLengthBP\n            ss = ee - minimumBP\n        } else if (ss < 0) {\n            ss = 0\n            ee = minimumBP\n        }\n\n    } else if (ee - ss < minimumBP) {\n\n        const center = (ee + ss) / 2\n\n        if (center - minimumBP / 2 < 0) {\n            ss = 0\n            ee = ss + minimumBP\n        } else if (center + minimumBP / 2 > chromosomeLengthBP) {\n            ee = chromosomeLengthBP\n            ss = ee - minimumBP\n        } else {\n            ss = center - minimumBP / 2\n            ee = ss + minimumBP\n        }\n    }\n\n    genomicExtent.start = Math.ceil(ss)\n    genomicExtent.end = Math.floor(ee)\n}\n\n/*!\n * is-number <https://github.com/jonschlinkert/is-number>\n *\n * Copyright (c) 2014-present, Jon Schlinkert.\n * Released under the MIT License.\n */\n\nconst isNumber = function (num) {\n    if (typeof num === 'number') {\n        return num - num === 0\n    }\n    if (typeof num === 'string' && num.trim() !== '') {\n        return Number.isFinite ? Number.isFinite(+num) : isFinite(+num)\n    }\n    return false\n}\n\nasync function getFilename(url) {\n    if (StringUtils.isString(url) && url.startsWith(\"https://drive.google.com\")) {\n        // This will fail if Google API key is not defined\n        if (GoogleAuth.getApiKey() === undefined) {\n            throw Error(\"Google drive is referenced, but API key is not defined.  An API key is required for Google Drive access\")\n        }\n        const json = await GoogleDrive.getDriveFileInfo(url)\n        return json.originalFileName || json.name\n    } else {\n        return FileUtils.getFilename(url)\n    }\n}\n\nfunction prettyBasePairNumber(raw) {\n\n    var denom,\n        units,\n        value,\n        floored\n\n    if (raw > 1e7) {\n        denom = 1e6\n        units = \" mb\"\n    } else if (raw > 1e4) {\n\n        denom = 1e3\n        units = \" kb\"\n\n        value = raw / denom\n        floored = Math.floor(value)\n        return StringUtils.numberFormatter(floored) + units\n    } else {\n        return StringUtils.numberFormatter(raw) + \" bp\"\n    }\n\n    value = raw / denom\n    floored = Math.floor(value)\n\n    return floored.toString() + units\n}\n\n\nfunction isDataURL(obj) {\n    return (StringUtils.isString(obj) && obj.startsWith(\"data:\"))\n}\n\nfunction createColumn(columnContainer, className) {\n    const column = DOMUtils.div({class: className})\n    columnContainer.appendChild(column)\n}\n\n\nfunction insertElementBefore(element, referenceNode) {\n    referenceNode.parentNode.insertBefore(element, referenceNode)\n}\n\nfunction insertElementAfter(element, referenceNode) {\n    referenceNode.parentNode.insertBefore(element, referenceNode.nextSibling)\n}\n\n/**\n * Test to see if page is loaded in a secure context, that is by https or is localhost.\n */\nfunction isSecureContext() {\n    return window.location.protocol === \"https:\" || window.location.hostname === \"localhost\"\n}\n\n// reference: https://pretagteam.com/question/find-element-height-including-margin\nfunction getElementAbsoluteHeight(element) {\n\n    // Get the DOM Node if you pass in a string\n    element = (typeof element === 'string') ? document.querySelector(element) : element\n\n    const styles = window.getComputedStyle(element)\n    const margin = parseFloat(styles['marginTop']) + parseFloat(styles['marginBottom'])\n    const height = element.offsetHeight\n\n    return Math.ceil(margin + height);\n}\n\nexport {\n    createColumn, extend, isSimpleType, buildOptions, validateGenomicExtent, doAutoscale, isNumber,\n    getFilename, prettyBasePairNumber, isDataURL, insertElementBefore, insertElementAfter, isSecureContext,\n    getElementAbsoluteHeight\n}\n","import {IGVColor} from \"../../../node_modules/igv-utils/src/index.js\"\nimport {isNumber} from \"../../util/igvUtils.js\"\n\n/**\n * Decoder for bedpe records.\n *\n * Bedpe format was created by Aaron Quinlan et al as part of the bedtools project.\n * The spec is here:  https://bedtools.readthedocs.io/en/latest/content/general-usage.html,\n *\n * 1      2      3    4      5      6    7    8     9       10      11-\n * chrom1 start1 end1 chrom2 start2 end2 name score strand1 strand2 <Any number of additional, user-defined fields>\n *\n * However there are off spec variants, an important one being a 7 column format with score in place of the standard\n * name column.\n *\n * A common variant is a \"hiccups\" output file, which is standard bedpe with the exception of a header line\n * of the form\n *\n * chr1    x1    x2    chr2    y1    y2    name    score    strand1    strand2    color    observed    expectedBL    expectedDonut    expectedH    expectedV    fdrBL    fdrDonut    fdrH    fdrV\n *\n * The \"hiccups\" output is apparently not standardized as this is found at ENCODE, with a non-helpful \"tsv\" extension\n *\n * chr1    x1    x2    chr2    y1    y2    color    observed    expectedBL    expectedDonut    expectedH    expectedV    fdrBL    fdrDonut    fdrH    fdrV    numCollapsed    centroid1    centroid2    radius\n * chr9    136790000    136795000    chr9    136990000    136995000    0,255,255    101.0    31.100368    38.40316    56.948116    34.040756    1.1876738E-13    1.05936405E-13    2.5148233E-4    1.7220993E-13    1    136792500    136992500    25590\n *\n * The \"hiccups\" documentation specfies yet another set of column headers\n * chromosome1    x1    x2    chromosome2    y1    y2    color    observed expected_bottom_left    expected_donut    expected_horizontal    expected_vertical fdr_bottom_left    fdr_donut    fdr_horizontal    fdr_vertical number_collapsed    centroid1    centroid2    radius\n *\n * @param tokens\n * @param ignore\n * @returns {{start1: number, end2: number, end1: number, chr1: *, chr2: *, start2: number}|undefined}\n */\n\nfunction decodeBedpe(tokens, header) {\n\n    if (tokens.length < 6) {\n        console.log(\"Skipping line: \" + tokens.join(' '))\n        return undefined\n    }\n\n    var feature = {\n        chr1: tokens[0],\n        start1: Number.parseInt(tokens[1]),\n        end1: Number.parseInt(tokens[2]),\n        chr2: tokens[3],\n        start2: Number.parseInt(tokens[4]),\n        end2: Number.parseInt(tokens[5])\n    }\n\n    if (isNaN(feature.start1) || isNaN(feature.end1) || isNaN(feature.start2) || isNaN(feature.end2)) {\n        //throw Error(`Error parsing line: ${tokens.join('\\t')}`);\n        return undefined\n    }\n\n    // Determine if this is a \"hiccups\" file.  Store result on \"header\" so it doesn't need repeated for every feature\n    if(header && header.hiccups === undefined) {\n        header.hiccups = header.columnNames ? isHiccups(header.columnNames) : false\n    }\n    const hiccups = header && header.hiccups\n    const stdColumns = hiccups ? 6 : 10\n\n    if(!hiccups) {\n        if (tokens.length > 6 && tokens[6] !== \".\") {\n            feature.name = tokens[6]\n        }\n\n        if (tokens.length > 7 && tokens[7] !== \".\") {\n            feature.score = Number(tokens[7])\n        }\n\n        if (tokens.length > 8 && tokens[8] !== \".\") {\n            feature.strand1 = tokens[8]\n        }\n\n        if (tokens.length > 9 && tokens[9] !== \".\") {\n            feature.strand2 = tokens[9]\n        }\n    }\n\n    // Optional extra columns\n    if (header) {\n        const colorColumn = header.colorColumn\n        if (colorColumn && colorColumn < tokens.length) {\n            feature.color = IGVColor.createColorString(tokens[colorColumn])\n        }\n        const thicknessColumn = header.thicknessColumn\n        if (thicknessColumn && thicknessColumn < tokens.length) {\n            feature.thickness = tokens[thicknessColumn]\n        }\n\n        if (tokens.length > stdColumns && header.columnNames && header.columnNames.length === tokens.length) {\n            feature.extras = tokens.slice(stdColumns)\n        }\n    }\n\n\n    // Set total extent of feature\n    if (feature.chr1 === feature.chr2) {\n        feature.chr = feature.chr1\n        feature.start = Math.min(feature.start1, feature.start2)\n        feature.end = Math.max(feature.end1, feature.end2)\n\n    }\n    return feature\n}\n\n/**\n * Hack for non-standard bedPE formats, where numeric score can be in column 7 (name field from spec)\n * @param features\n */\nfunction fixBedPE(features) {\n\n    if (features.length == 0) return\n\n    // Assume all features have same properties\n    const firstFeature = features[0]\n    if (firstFeature.score === undefined && firstFeature.name !== undefined) {\n        // Name field (col 7) is sometimes used for score.\n        for (let f of features) {\n            if (!(isNumber(f.name) || f.name === '.')) return\n        }\n        for (let f of features) {\n            f.score = Number(f.name)\n            delete f.name\n        }\n    }\n\n    // Make copies of inter-chr features, one for each chromosome\n    const interChrFeatures = features.filter(f => f.chr1 !== f.chr2)\n    for (let f1 of interChrFeatures) {\n        const f2 = Object.assign({}, f1)\n        f2.dup = true\n        features.push(f2)\n\n        f1.chr = f1.chr1\n        f1.start = f1.start1\n        f1.end = f1.end1\n\n        f2.chr = f2.chr2\n        f2.start = f2.start2\n        f2.end = f2.end2\n    }\n}\n\n\n/**\n * Special decoder for Hic Domain files.   In these files feature1 == feature2, they are really bed records.\n * @param tokens\n * @param ignore\n * @returns {*}\n */\nfunction decodeBedpeDomain(tokens, header) {\n\n    if (tokens.length < 8) return undefined\n\n    return {\n        chr: tokens[0],\n        start: Number.parseInt(tokens[1]),\n        end: Number.parseInt(tokens[2]),\n        color: IGVColor.createColorString(tokens[6]),\n        value: Number(tokens[7])\n    }\n}\n\nfunction isHiccups(columns) {\n    return columns && (columns.includes(\"fdrDonut\") || columns.includes(\"fdr_donut\"))\n}\n\n\nexport {decodeBedpe, decodeBedpeDomain, fixBedPE, isHiccups}","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {igvxhr, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport FileFormats from \"./fileFormats.js\"\nimport {isHiccups} from \"../feature/decode/bedpe.js\"\nimport {buildOptions} from \"./igvUtils.js\"\n\nconst knownFileExtensions = new Set([\n\n    \"narrowpeak\",\n    \"broadpeak\",\n    \"regionpeak\",\n    \"peaks\",\n    \"bedgraph\",\n    \"wig\",\n    \"gff3\",\n    \"gff\",\n    \"gtf\",\n    \"fusionjuncspan\",\n    \"refflat\",\n    \"seg\",\n    \"aed\",\n    \"bed\",\n    \"vcf\",\n    \"bb\",\n    \"bigbed\",\n    \"biginteract\",\n    \"biggenepred\",\n    \"bignarrowpeak\",\n    \"bw\",\n    \"bigwig\",\n    \"bam\",\n    \"tdf\",\n    \"refgene\",\n    \"genepred\",\n    \"genepredext\",\n    \"bedpe\",\n    \"bp\",\n    \"snp\",\n    \"rmsk\",\n    \"cram\",\n    \"gwas\",\n    \"maf\",\n    \"mut\",\n    \"tsv\",\n    \"hiccups\",\n    \"fasta\",\n    \"fa\",\n    \"fna\",\n    \"pytor\"\n])\n\n/**\n * Return a custom format object with the given name.\n * @param name\n * @returns {*}\n */\nfunction getFormat(name) {\n\n    if (FileFormats && FileFormats[name]) {\n        return expandFormat(FileFormats[name])\n    } else {\n        return undefined\n    }\n\n    function expandFormat(format) {\n\n        const fields = format.fields\n        const keys = ['chr', 'start', 'end']\n\n        for (let i = 0; i < fields.length; i++) {\n            for (let key of keys) {\n                if (key === fields[i]) {\n                    format[key] = i\n                }\n            }\n        }\n\n        return format\n    }\n}\n\nfunction inferFileFormat(fn) {\n\n    var idx, ext\n\n    fn = fn.toLowerCase()\n\n    // Special case -- UCSC refgene files\n    if (fn.endsWith(\"refgene.txt.gz\") ||\n        fn.endsWith(\"refgene.txt.bgz\") ||\n        fn.endsWith(\"refgene.txt\") ||\n        fn.endsWith(\"refgene.sorted.txt.gz\") ||\n        fn.endsWith(\"refgene.sorted.txt.bgz\")) {\n        return \"refgene\"\n    }\n\n\n    //Strip parameters -- handle local files later\n    idx = fn.indexOf(\"?\")\n    if (idx > 0) {\n        fn = fn.substr(0, idx)\n    }\n\n    //Strip aux extensions .gz, .tab, and .txt\n    if (fn.endsWith(\".gz\")) {\n        fn = fn.substr(0, fn.length - 3)\n    }\n\n    if (fn.endsWith(\".txt\") || fn.endsWith(\".tab\") || fn.endsWith(\".bgz\")) {\n        fn = fn.substr(0, fn.length - 4)\n    }\n\n\n    idx = fn.lastIndexOf(\".\")\n    ext = idx < 0 ? fn : fn.substr(idx + 1)\n\n    switch (ext) {\n        case \"bw\":\n            return \"bigwig\"\n        case \"bb\":\n            return \"bigbed\"\n        case \"fasta\":\n        case \"fa\":\n        case \"fna\":\n            return \"fasta\"\n        default:\n            if (knownFileExtensions.has(ext)) {\n                return ext\n            } else {\n                return undefined\n            }\n\n    }\n\n}\n\nfunction inferIndexPath(url, extension) {\n\n    if (StringUtils.isString(url)) {\n        if (url.includes(\"?\")) {\n            const idx = url.indexOf(\"?\")\n            return url.substring(0, idx) + \".\" + extension + url.substring(idx)\n        } else {\n            return url + \".\" + extension\n        }\n    } else {\n        return undefined\n    }\n}\n\n\nfunction inferTrackType(config) {\n\n    translateDeprecatedTypes(config)\n\n    if (config.type) {\n        return config.type\n    }\n\n    if (config.format) {\n        const format = config.format.toLowerCase()\n        switch (format) {\n            case \"bw\":\n            case \"bigwig\":\n            case \"wig\":\n            case \"bedgraph\":\n            case \"tdf\":\n                return \"wig\"\n            case \"vcf\":\n                return \"variant\"\n            case \"seg\":\n                return \"seg\"\n            case \"mut\":\n            case \"maf\":\n                return \"mut\"\n            case \"bam\":\n            case \"cram\":\n                return \"alignment\"\n            case \"hiccups\":\n            case \"bedpe\":\n            case \"bedpe-loop\":\n            case \"biginteract\":\n                return \"interact\"\n            case \"bp\":\n                return \"arc\"\n            case \"gwas\":\n                return \"gwas\"\n            case \"bed\":\n            case \"bigbed\":\n            case \"bb\":\n            case \"biggenepred\":\n            case \"bignarrowpeak\":\n                return \"bedtype\"\n            case \"fasta\":\n                return \"sequence\"\n            case \"pytor\":\n                return \"cnvpytor\"\n            default:\n                return \"annotation\"\n        }\n    }\n}\n\nfunction translateDeprecatedTypes(config) {\n\n    if (config.featureType) {  // Translate deprecated \"feature\" type\n        config.type = config.type || config.featureType\n        config.featureType = undefined\n    }\n    if (\"junctions\" === config.type) {\n        config.type = \"junction\"\n    } else if (\"bed\" === config.type) {\n        config.type = \"annotation\"\n        config.format = config.format || \"bed\"\n    } else if (\"annotations\" === config.type) {\n        config.type = \"annotation\"\n    } else if (\"alignments\" === config.type) {\n        config.type = \"alignment\"\n    } else if (\"bam\" === config.type) {\n        config.type = \"alignment\"\n        config.format = \"bam\"\n    } else if (\"vcf\" === config.type) {\n        config.type = \"variant\"\n        config.format = \"vcf\"\n    } else if (\"t2d\" === config.type) {\n        config.type = \"gwas\"\n    } else if (\"FusionJuncSpan\" === config.type && !config.format) {\n        config.format = \"fusionjuncspan\"\n    } else if (\"aed\" === config.type) {\n        config.type = \"annotation\"\n        config.format = config.format || \"aed\"\n    }\n}\n\n/**\n * Attempt to infer the file format by reading a few lines from the header.  Currently this only supports \"tsv\" extensions,\n * it was added specifically for \"hiccups\" type tsv files in ENCODE.  Might be expanded in the future.\n *\n * @param url\n * @returns {Promise<void>}\n */\nasync function inferFileFormatFromHeader(config) {\n\n    if (config.url) {\n        const firstBytes = await igvxhr.loadString(config.url, buildOptions(config, {range: {start: 0, size: 1000}}))\n        if(firstBytes) {\n            const columnNames = firstBytes.split('\\n')[0].split('\\t')\n            if(isHiccups(columnNames)) {\n                return \"hiccups\"\n            }\n        }\n    }\n\n    return undefined\n\n}\n\nfunction registerFileFormats(name, fields) {\n    FileFormats[name] = {fields: fields}\n}\n\n\nexport {knownFileExtensions, getFormat, inferFileFormat, inferFileFormatFromHeader, inferTrackType, inferIndexPath, registerFileFormats}\n","const pairs =\n    [\n        ['A', 'T'],\n        ['G', 'C'],\n        ['Y', 'R'],\n        ['W', 'S'],\n        ['K', 'M'],\n        ['D', 'H'],\n        ['B', 'V']\n    ]\n\nconst complements = new Map()\nfor (let p of pairs) {\n    const p1 = p[0]\n    const p2 = p[1]\n    complements.set(p1, p2)\n    complements.set(p2, p1)\n    complements.set(p1.toLowerCase(), p2.toLowerCase())\n    complements.set(p2.toLowerCase(), p1.toLowerCase())\n}\n\nfunction complementBase(base) {\n    return complements.has(base) ? complements.get(base) : base\n}\n\nfunction complementSequence(sequence) {\n    let comp = ''\n    for (let base of sequence) {\n        comp += complements.has(base) ? complements.get(base) : base\n    }\n    return comp\n}\n\nfunction reverseComplementSequence(sequence) {\n\n    let comp = ''\n    let idx = sequence.length\n    while (idx-- > 0) {\n        const base = sequence[idx]\n        comp += complements.has(base) ? complements.get(base) : base\n    }\n    return comp\n}\n\nexport {complementBase, complementSequence, reverseComplementSequence}\n\n","class Chromosome {\n    constructor(name, order, bpLength) {\n        this.name = name\n        this.order = order\n        this.bpLength = bpLength\n    }\n}\n\nexport default Chromosome","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n// Indexed fasta files\nimport {BGZip, igvxhr, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport Chromosome from \"./chromosome.js\"\nimport {buildOptions, isDataURL} from \"../util/igvUtils.js\"\n\nconst splitLines = StringUtils.splitLines\n\nconst reservedProperties = new Set(['fastaURL', 'indexURL', 'cytobandURL', 'indexed'])\n\nclass NonIndexedFasta {\n\n\n    constructor(reference) {\n\n        this.fastaURL = reference.fastaURL\n        this.withCredentials = reference.withCredentials\n        this.chromosomeNames = []\n        this.chromosomes = {}\n        this.sequences = new Map()\n\n        // Build a track-like config object from the referenceObject\n        const config = {}\n        for (let key in reference) {\n            if (reference.hasOwnProperty(key) && !reservedProperties.has(key)) {\n                config[key] = reference[key]\n            }\n        }\n        this.config = config\n    }\n\n\n    async init() {\n        return this.loadAll()\n    }\n\n    async getSequence(chr, start, end) {\n\n        if (!this.sequences.has(chr)) {\n            return undefined\n        }\n\n        let seqSlice = this.sequences.get(chr).find(ss => ss.contains(start, end))\n        if (!seqSlice) {\n            seqSlice = this.sequences.get(chr).find(ss => ss.overlaps(start, end))\n            if (!seqSlice) {\n                return undefined\n            }\n        }\n\n        start -= seqSlice.offset\n        end -= seqSlice.offset\n\n        let prefix = \"\"\n        if (start < 0) {\n            for (let i = start; i < Math.min(end, 0); i++) {\n                prefix += \"*\"\n            }\n        }\n\n        if (end <= 0) {\n            return Promise.resolve(prefix)\n        }\n\n        const seq = seqSlice.sequence\n        const seqEnd = Math.min(end, seq.length)\n        return prefix + seq.substring(start, seqEnd)\n    }\n\n    async loadAll() {\n\n        let data\n        if (isDataURL(this.fastaURL)) {\n            let bytes = BGZip.decodeDataURI(this.fastaURL)\n            data = \"\"\n            for (let b of bytes) {\n                data += String.fromCharCode(b)\n            }\n        } else {\n            data = await igvxhr.load(this.fastaURL, buildOptions(this.config))\n        }\n\n        const chrNameSet = new Set()\n        const lines = splitLines(data)\n        const len = lines.length\n        let lineNo = 0\n        let order = 0\n        let nextLine\n        let current = {}\n        while (lineNo < len) {\n            nextLine = lines[lineNo++].trim()\n            if (nextLine.startsWith(\"#\") || nextLine.length === 0) {\n                // skip\n            } else if (nextLine.startsWith(\">\")) {\n                // Start the next sequence\n                if(current && current.seq) {\n                    pushChromosome.call(this, current, order++)\n                }\n\n                const parts = nextLine.substr(1).split(/\\s+/)\n\n                // Check for samtools style locus string.   This is not perfect, and could fail on weird sequence names\n                const nameParts = parts[0].split(':')\n                current.chr = nameParts[0]\n                current.seq = \"\"\n                current.offset = 0\n                if (nameParts.length > 1 && nameParts[1].indexOf('-') > 0) {\n                    const locusParts = nameParts[1].split('-')\n                    if (locusParts.length === 2 &&\n                        /^[0-9]+$/.test(locusParts[0]) &&\n                        /^[0-9]+$/.test(locusParts[1])) {\n                    }\n                    const from = Number.parseInt(locusParts[0])\n                    const to = Number.parseInt(locusParts[1])\n                    if (to > from) {   // TODO this should be an error\n                        current.offset = from - 1\n                    }\n\n                    // Check for chromosome length token\n                    if (parts.length > 1 && parts[1].startsWith(\"@len=\")) {\n                        try {\n                            current.length = parseInt(parts[1].trim().substring(5))\n                        } catch (e) {\n                            current.length = undefined\n                            console.error(`Error parsing sequence length for ${nextLine}`)\n                        }\n                    } else {\n                        current.length = undefined\n                    }\n                }\n            } else {\n                current.seq += nextLine\n            }\n            // add last seq\n            if (current && current.seq) {\n                pushChromosome.call(this, current, order)\n            }\n        }\n\n        function pushChromosome(current, order) {\n            const length = current.length || (current.offset + current.seq.length)\n            if (!chrNameSet.has(current.chr)) {\n                this.chromosomeNames.push(current.chr)\n                this.sequences.set(current.chr, [])\n                this.chromosomes[current.chr] = new Chromosome(current.chr, order, length)\n                chrNameSet.add(current.chr)\n            } else {\n                const c = this.chromosomes[current.chr]\n                c.bpLength = Math.max(c.bpLength, length)\n            }\n            this.sequences.get(current.chr).push(new SequenceSlice(current.offset, current.seq))\n        }\n    }\n}\n\nclass SequenceSlice {\n\n    constructor(offset, sequence) {\n        this.offset = offset\n        this.sequence = sequence\n    }\n\n    contains(start, end) {\n        return this.offset <= start && this.end >= end\n    }\n\n    overlaps(start, end) {\n        return this.offset < end && this.end > start\n    }\n\n    get end() {\n        return this.offset + this.sequence.length\n    }\n\n}\n\n\nexport default NonIndexedFasta\n","const GenomicInterval = function (chr, start, end, features) {\n    this.chr = chr\n    this.start = start\n    this.end = end\n    this.features = features\n}\n\nGenomicInterval.prototype.contains = function (chr, start, end) {\n    return this.chr === chr &&\n        this.start <= start &&\n        this.end >= end\n}\n\nGenomicInterval.prototype.containsRange = function (range) {\n    return this.chr === range.chr &&\n        this.start <= range.start &&\n        this.end >= range.end\n}\n\nexport default GenomicInterval","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n// Indexed fasta files\nimport {BGZip, igvxhr, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport GenomicInterval from \"./genomicInterval.js\"\nimport Chromosome from \"./chromosome.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\n\nconst splitLines = StringUtils.splitLines\n\nconst reservedProperties = new Set(['fastaURL', 'indexURL', 'compressedIndexURL', 'cytobandURL', 'indexed'])\n\nclass FastaSequence {\n\n    constructor(reference) {\n\n        this.file = reference.fastaURL\n        this.indexFile = reference.indexURL || reference.indexFile || this.file + \".fai\"\n        this.compressedIndexFile = reference.compressedIndexURL || false\n        this.withCredentials = reference.withCredentials\n        this.chromosomeNames = []\n        this.chromosomes = {}\n        this.sequences = {}\n        this.offsets = {}\n\n        // Build a track-like config object from the referenceObject\n        const config = {}\n        for (let key in reference) {\n            if (reference.hasOwnProperty(key) && !reservedProperties.has(key)) {\n                config[key] = reference[key]\n            }\n        }\n        this.config = config\n    }\n\n\n    async init() {\n        return this.getIndex()\n    }\n\n    async getSequence(chr, start, end) {\n\n        const hasCachedSquence = this.interval && this.interval.contains(chr, start, end)\n\n        if (!hasCachedSquence) {\n\n            // Expand query, to minimum of 50kb\n            let qstart = start\n            let qend = end\n            if ((end - start) < 50000) {\n                const w = (end - start)\n                const center = Math.round(start + w / 2)\n                qstart = Math.max(0, center - 25000)\n                qend = center + 25000\n            }\n\n            const seqBytes = await this.readSequence(chr, qstart, qend)\n            this.interval = new GenomicInterval(chr, qstart, qend, seqBytes)\n        }\n\n        const offset = start - this.interval.start\n        const n = end - start\n        const seq = this.interval.features ? this.interval.features.substr(offset, n) : null\n        return seq\n    }\n\n    async getIndex() {\n\n        if (this.index) {\n            return this.index\n        } else {\n            const data = await igvxhr.load(this.indexFile, buildOptions(this.config))\n            const lines = splitLines(data)\n            const len = lines.length\n            let lineNo = 0\n            let order = 0\n            this.index = {}\n\n            while (lineNo < len) {\n                const tokens = lines[lineNo++].split(\"\\t\")\n                const nTokens = tokens.length\n\n                if (nTokens === 5) {\n                    // Parse the index line.\n                    const chr = tokens[0]\n                    const size = parseInt(tokens[1])\n                    const position = parseInt(tokens[2])\n                    const basesPerLine = parseInt(tokens[3])\n                    const bytesPerLine = parseInt(tokens[4])\n\n                    const indexEntry = {\n                        size: size,\n                        position: position,\n                        basesPerLine: basesPerLine,\n                        bytesPerLine: bytesPerLine\n                    }\n\n                    this.chromosomeNames.push(chr)\n                    this.index[chr] = indexEntry\n                    this.chromosomes[chr] = new Chromosome(chr, order++, size)\n                }\n            }\n            return this.index\n        }\n    }\n\n\n    //Code is losely based on https://github.com/GMOD/bgzf-filehandle\n    //Reworked however in orde to work with the igvxhr interface for loading files\n    //Additionally, replaced calls to the Long.js interface with standard JS calls for ArrayBuffers and the associated views\n    //\n    //The compressed index is an array of blocks, with each block being a pair: compressed-position & uncompressed-position (both in bytes)\n    async getCompressedIndex() {\n        const GZI_NUM_BYTES_OFFSET = 8\n        const GZI_NUM_BYTES_BLOCK = 8\n        if (this.compressedIndex) {\n            return this.compressedIndex\n        }\n        if (!this.compressedIndexFile) {\n            this.compressedIndex = []\n            return this.compressedIndex\n        }\n        //In contrast to the 'normal' reference (for which the index is chromosome based), this index is block-based\n        //As such there is not need to make it a hash. An array is sufficient.\n        this.compressedIndex = []\n        const gziData = await igvxhr.loadArrayBuffer(this.compressedIndexFile, buildOptions(this.config))\n        const givenFileSize = gziData.byteLength\n        if (givenFileSize < GZI_NUM_BYTES_OFFSET) {\n            console.log(\"Cannot parse GZI index file: length (\" + givenFileSize + \" bytes) is insufficient to determine content of index.\")\n            return this.compressedIndex\n        }\n        //First 8 bytes are a little endian unsigned bigint (64bit), indicating the number of blocks in the index.\n        const numBlocksBuffer = gziData.slice(0, GZI_NUM_BYTES_OFFSET)\n        const numBlocks = Number((new DataView(numBlocksBuffer)).getBigUint64(0, true))\n        //The remainder of the gzi content are pairs of little endian unsigned bigint (64bit) numbers.\n        //The first of the pair is the compressed position of a block\n        //The second of the pair is the uncompressed position of a block\n\n        //Sanity check:\n        //Is the size of the array-buffer (of the entire file) correct with regards to the number of blocks detailled by the first 8 bytes of the file?\n        //Total file-size should be:\n        // 8 + 2*(num_entries*8) bytes, with the first 8 bytes indicating the number of entries\n        const expectedFileSize = GZI_NUM_BYTES_OFFSET + numBlocks * 2 * GZI_NUM_BYTES_BLOCK\n        if (givenFileSize != expectedFileSize) {\n            console.log(\"Incorrect file size of reference genome index. Expected : \" + expectedFileSize + \". Received : \" + givenFileSize)\n            return this.compressedIndex\n        }\n\n        //Push the first block to the index: the first block always has positions 0 for both the compressed and uncompressed file\n        this.compressedIndex.push([0, 0])\n\n        //Further process all the blocks of the GZI index, and keep them in memory\n        for (let blockNumber = 0; blockNumber < numBlocks; blockNumber++) {\n            const bufferBlockStart = GZI_NUM_BYTES_OFFSET + blockNumber * 2 * GZI_NUM_BYTES_BLOCK\n            const bufferBlockEnd = GZI_NUM_BYTES_OFFSET + blockNumber * 2 * GZI_NUM_BYTES_BLOCK + 2 * GZI_NUM_BYTES_BLOCK\n            const bufferBlock = gziData.slice(bufferBlockStart, bufferBlockEnd)\n            const viewBlock = new DataView(bufferBlock)\n            const compressedPosition = Number(viewBlock.getBigUint64(0, true))  //First 8 bytes\n            const uncompressedPosition = Number(viewBlock.getBigUint64(GZI_NUM_BYTES_BLOCK, true)) //Last 8 bytes\n            this.compressedIndex.push([compressedPosition, uncompressedPosition])\n        }\n        return this.compressedIndex\n    }\n\n    //The Fasta-index gives a byte-position of the chromosomal sequences within the FASTA file.\n    //These locations need to be remapped to the locations within the zipped reference genome, using the GZI index\n    //This function provides this functionality by \n    //1) taking the indicated start/stop byte locations within the UNCOMPRESSED FASTA file\n    //2) remapping these byte locations to the correct blocks (and associated positions) within the COMPRESSED FASTA file\n    //Subsequently, the calling method can then extract the correct blocks from the compressed FASTA files and uncompressed the data\n    async getRelevantCompressedBlockNumbers(queryPositionStart, queryPositionEnd) {\n        const COMPRESSED_POSITION = 0\n        const UNCOMPRESSED_POSITION = 1\n        //Fallback for impossible values\n        if (queryPositionStart < 0 || queryPositionEnd < 0 || queryPositionEnd < queryPositionStart) {\n            console.log(\"Incompatible query positions for reference-genome. Start:\" + queryPositionStart + \" | End:\" + queryPositionEnd)\n            return []\n        }\n        //Ensure compressed index is loaded\n        await this.getCompressedIndex()\n        let result = []\n        //Now search for the correct block-numbers (going from 0 to length(compressed-index)) which overlap with the provided byte-positions\n        const lowestBlockNumber = 0\n        const highestBlockNumber = this.compressedIndex.length - 1\n        //Failsafe if for some reason the compressed index wasn't loaded or doesn't contain any data\n        if (this.compressedIndex.length == 0) {\n            console.log(\"Compressed index does not contain any content\")\n            return []\n        }\n        //Failsafe: if the queryPositionStart is greater than the uncompressed-position of the final block,\n        //then this final block is the only possible result\n        if (queryPositionStart > (this.compressedIndex)[highestBlockNumber][UNCOMPRESSED_POSITION]) {\n            return [highestBlockNumber]\n        }\n\n        //Rather than doing a linear search over all blocks, a binary search is done for speed considerations\n        //We are searching for the highest block number for which its position is smaller than the query start position\n        //Afterwards we will simply expand the blocks until the entire query range is covered\n        let searchLow = lowestBlockNumber\n        let searchHigh = highestBlockNumber\n        let searchPosition = Math.floor(this.compressedIndex.length / 2)\n        let maxIterations = this.compressedIndex.length + 1\n        let solutionFound = false\n        //instead of doing a while(true), this for-loop prevents eternal loops in case of issues\n        for (let iteration = 0; iteration < maxIterations; iteration++) {\n            const searchUncompressedPosition = (this.compressedIndex)[searchPosition][UNCOMPRESSED_POSITION]\n            const nextSearchUncompressedPosition = (searchPosition < (this.compressedIndex.length - 1)) ? (this.compressedIndex)[searchPosition + 1][UNCOMPRESSED_POSITION] : Infinity\n            //The query position lies within the current search block\n            if (searchUncompressedPosition <= queryPositionStart && nextSearchUncompressedPosition > queryPositionStart) {\n                solutionFound = true\n                break //searchPosition is the correct block number index\n            }\n            //Current block lies before the query position\n            else if (searchUncompressedPosition < queryPositionStart) {\n                searchLow = searchPosition + 1\n            }\n            //Current block lies after the query position\n            else {\n                searchHigh = searchPosition - 1\n            }\n            searchPosition = Math.ceil((searchHigh - searchLow) / 2) + searchLow\n        }\n        //If for some reason the binary search did not reveal a correct block index, then we return the empty result\n        if (!solutionFound) {\n            console.log(\"No blocks within compressed index found that correspond with query positions \" + queryPositionStart + \",\" + queryPositionEnd)\n            console.log(this.compressedIndex)\n            return []\n        }\n\n        //Now extend the result by adding additional blocks until the entire query range is covered\n        result.push(searchPosition)\n        for (let blockIndex = searchPosition + 1; blockIndex < this.compressedIndex.length; blockIndex++) {\n            result.push(blockIndex)\n            const blockUncompressedPosition = (this.compressedIndex)[blockIndex][UNCOMPRESSED_POSITION]\n            if (blockUncompressedPosition >= queryPositionEnd) {\n                break\n            }\n        }\n\n        //It is possible that the query end position lies AFTER the start of the final block\n        //If this is the case, we add a 'fake' negative index which will be interpreted by the loadAndUncompressBlocks method as an indicator\n        //to read until the end of the file \n        const finalRelevantBlock = result[result.length - 1]\n        const finalIndexBlock = this.compressedIndex.length - 1\n        if (finalRelevantBlock === finalIndexBlock && (this.compressedIndex)[finalRelevantBlock][UNCOMPRESSED_POSITION] < queryPositionEnd) {\n            result.push(-1)\n        }\n\n        return result\n    }\n\n\n    //Load the content from the blockIndices.\n    //This is done on a per-block basis\n    //Content of the first block will be trimmed in order to match the expected offset\n    async loadAndUncompressBlocks(blockIndices, startByte) {\n        const COMPRESSED_POSITION = 0\n        const UNCOMPRESSED_POSITION = 1\n        //Normally the compressed index should already exist, we're just makeing sure here\n        await this.getCompressedIndex()\n\n        if (blockIndices.length == 0) {\n            return \"\"\n        }\n\n        //Storing data in seperate array with indices in order to assert order due to async behaviour of loops\n        let resultCache = Array(blockIndices.length - 1)\n        for (let i = 0; i < blockIndices.length - 1; i++) {\n            const currentBlockNumber = blockIndices[i]\n            const currentBlockInfo = (this.compressedIndex)[currentBlockNumber]\n            const currentBlockCompressedPosition = currentBlockInfo[COMPRESSED_POSITION]\n\n            const nextBlockNumber = blockIndices[i + 1]\n            let compressedBytes = []\n            if (nextBlockNumber != -1) {  //default : read current entire block only\n                const nextBlockInfo = (this.compressedIndex)[nextBlockNumber]\n                const nextBlockCompressedPosition = nextBlockInfo[COMPRESSED_POSITION]\n                const compressedLength = nextBlockCompressedPosition - currentBlockCompressedPosition\n                compressedBytes = await igvxhr.loadArrayBuffer(this.file, buildOptions(this.config, {\n                    range: {\n                        start: currentBlockCompressedPosition,\n                        size: compressedLength\n                    }\n                }))\n            } else {   // special case for query within final block: read until the end of the file\n                compressedBytes = await igvxhr.loadArrayBuffer(this.file, buildOptions(this.config, {\n                    range: {\n                        start: currentBlockCompressedPosition\n                    }\n                }))\n            }\n            //now unzip the compressed bytes, and store them in the resultCache\n            const uncompressedBytes = await BGZip.unbgzf(compressedBytes)\n            resultCache[i] = uncompressedBytes\n        }\n\n        //Iterate over the result cache, create sequences from the data, and create a full sequence string from the data\n        let result = \"\"\n        for (let i = 0; i < resultCache.length; i++) {\n            for (let j = 0; j < resultCache[i].length; j++) {\n                const c = String.fromCharCode(resultCache[i][j])\n                result = result + c\n            }\n        }\n\n        //postprocess this data: because entire blocks are read we need to remove the first N bases of the first used block, \n        //which are not included in the original query positions\n        const firstBlockInfo = (this.compressedIndex)[blockIndices[0]]\n        const offset = startByte - firstBlockInfo[UNCOMPRESSED_POSITION]\n        result = result.substring(offset)\n\n        return result\n    }\n\n\n    async readSequence(chr, qstart, qend) {\n\n        await this.getIndex()\n        await this.getCompressedIndex() //This will work even if no compressed index file is set\n\n        const idxEntry = this.index[chr]\n        if (!idxEntry) {\n            console.log(\"No index entry for chr: \" + chr)\n            // Tag interval with null so we don't try again\n            this.interval = new GenomicInterval(chr, qstart, qend, null)\n            return null\n        }\n\n        const start = Math.max(0, qstart)    // qstart should never be < 0\n        const end = Math.min(idxEntry.size, qend)\n        const bytesPerLine = idxEntry.bytesPerLine\n        const basesPerLine = idxEntry.basesPerLine\n        const position = idxEntry.position\n        const nEndBytes = bytesPerLine - basesPerLine\n        const startLine = Math.floor(start / basesPerLine)\n        const endLine = Math.floor(end / basesPerLine)\n        const base0 = startLine * basesPerLine   // Base at beginning of start line\n        const offset = start - base0\n        const startByte = position + startLine * bytesPerLine + offset\n        const base1 = endLine * basesPerLine\n        const offset1 = end - base1\n        const endByte = position + endLine * bytesPerLine + offset1 - 1\n        const byteCount = endByte - startByte + 1\n\n        if (byteCount <= 0) {\n            console.error(\"No sequence for \" + chr + \":\" + qstart + \"-\" + qend)\n            return null\n        }\n\n        //If the compressed index file is set, then we are dealing with a compressed genome sequence\n        //The selection of startByte/endByte is done for the non-compressed genome sequence.\n        //These need to be 'converted' to the correct byte positions in the compressed genome sequence,\n        //by making use of the compressed index (GZI file)\n        let allBytes\n        if (!this.compressedIndexFile) {\n            allBytes = await igvxhr.load(this.file, buildOptions(this.config, {\n                range: {\n                    start: startByte,\n                    size: byteCount\n                }\n            }))\n        } else {\n            let relevantBlockIndices = await this.getRelevantCompressedBlockNumbers(startByte, endByte)\n            if (relevantBlockIndices.length === 0) {\n                console.log(\"No blocks in the compressed index that correspond with the requested byte positions (\" + startByte + \",\" + endByte + \")\")\n                return null\n            }\n            allBytes = await this.loadAndUncompressBlocks(relevantBlockIndices, startByte)\n        }\n\n        if (!allBytes) {\n            return null\n        }\n\n        let nBases,\n            seqBytes = \"\",\n            srcPos = 0,\n            desPos = 0,\n            allBytesLength = allBytes.length\n\n        if (offset > 0) {\n            nBases = Math.min(end - start, basesPerLine - offset)\n            seqBytes += allBytes.substr(srcPos, nBases)\n            srcPos += (nBases + nEndBytes)\n            desPos += nBases\n        }\n\n        while (srcPos < allBytesLength) {\n            nBases = Math.min(basesPerLine, allBytesLength - srcPos)\n            seqBytes += allBytes.substr(srcPos, nBases)\n            srcPos += (nBases + nEndBytes)\n            desPos += nBases\n        }\n\n        return seqBytes\n\n    }\n}\n\nexport default FastaSequence\n\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n// Indexed fasta files\nimport {BGZip, igvxhr, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport Chromosome from \"./chromosome.js\"\nimport {isDataURL} from \"../util/igvUtils.js\"\n\nconst splitLines = StringUtils.splitLines\n\nconst reservedProperties = new Set(['fastaURL', 'indexURL', 'cytobandURL', 'indexed'])\n\nclass ChromSizes {\n\n\n    constructor(url) {\n        this.url = url\n        this.chromosomeNames = []\n        this.chromosomes = {}\n    }\n\n\n    async init() {\n        return this.loadAll()\n    }\n\n    async getSequence(chr, start, end) {\n\n        return undefined // TODO -- return array of \"N\"s?\n    }\n\n    async loadAll() {\n\n        let data\n        if (isDataURL(this.url)) {\n            let bytes = BGZip.decodeDataURI(this.fastaURL)\n            data = \"\"\n            for (let b of bytes) {\n                data += String.fromCharCode(b)\n            }\n        } else {\n            data = await igvxhr.load(this.url, {})\n        }\n\n\n        this.chromosomeNames = []\n        this.chromosomes = {}\n\n        const lines = splitLines(data)\n        let order = 0\n        for (let nextLine of lines) {\n            const tokens = nextLine.split('\\t')\n            this.chromosomeNames.push(tokens[0])\n            const chrLength = Number.parseInt(tokens[1])\n            const chromosome = new Chromosome(tokens[0], order++, chrLength)\n            this.chromosomes[tokens[0]] = chromosome\n\n        }\n    }\n\n}\n\n\nexport default ChromSizes\n","import NonIndexedFasta from \"./nonIndexedFasta.js\"\nimport FastaSequence from \"./indexedFasta.js\"\nimport {isDataURL} from \"../util/igvUtils.js\"\nimport ChromSizes from \"./chromSizes.js\"\n\nasync function loadFasta(reference) {\n\n    let fasta\n    if (\"chromsizes\" === reference.format) {\n        fasta = new ChromSizes(reference.fastaURL)\n    } else if (isDataURL(reference.fastaURL) || reference.indexed === false) {\n        fasta = new NonIndexedFasta(reference)\n    } else {\n        fasta = new FastaSequence(reference)\n    }\n    await fasta.init()\n    return fasta\n}\n\nexport {loadFasta}\n","const defaultNucleotideColors = {\n    \"A\": \"rgb(  0, 200,   0)\",\n    \"C\": \"rgb(  0,0,200)\",\n    \"T\": \"rgb(255,0,0)\",\n    \"G\": \"rgb(209,113,  5)\",\n    \"N\": \"rgb(80,80,80)\"\n}\n\nconst deuterNucleotideColors = {\n    \"A\": \"rgb(34,186,155)\",\n    \"C\": \"rgb(0,113,178)\",\n    \"T\": \"rgb(239,63,112)\",\n    \"G\": \"rgb(254,203,12)\",\n    \"N\": \"rgb(33,33,33)\"\n}\n\nconst ibmNucleotideColors = {\n    \"A\": \"#009E73\",\n    \"C\": \"#0072B2\",\n    \"T\": \"#D55E00\",\n    \"G\": \"#F0E442\",\n    \"N\": \"rgb(33,33,33)\"\n}\n\nexport {defaultNucleotideColors, deuterNucleotideColors, ibmNucleotideColors}\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport IGVGraphics from \"./igv-canvas.js\"\nimport {isSecureContext} from \"./util/igvUtils.js\"\nimport {reverseComplementSequence} from \"./util/sequenceUtils.js\"\nimport {loadFasta} from \"./genome/fasta.js\"\nimport {defaultNucleotideColors} from \"./util/nucleotideColors.js\";\n\nconst defaultSequenceTrackOrder = Number.MIN_SAFE_INTEGER\n\nconst translationDict = {\n    'TTT': 'F',\n    'TTC': 'F',\n    'TTA': 'L',\n    'TTG': 'L',\n    'CTT': 'L',\n    'CTC': 'L',\n    'CTA': 'L',\n    'CTG': 'L',\n    'ATT': 'I',\n    'ATC': 'I',\n    'ATA': 'I',\n    'ATG': 'M',\n    'GTT': 'V',\n    'GTC': 'V',\n    'GTA': 'V',\n    'GTG': 'V',\n    'TCT': 'S',\n    'TCC': 'S',\n    'TCA': 'S',\n    'TCG': 'S',\n    'CCT': 'P',\n    'CCC': 'P',\n    'CCA': 'P',\n    'CCG': 'P',\n    'ACT': 'T',\n    'ACC': 'T',\n    'ACA': 'T',\n    'ACG': 'T',\n    'GCT': 'A',\n    'GCC': 'A',\n    'GCA': 'A',\n    'GCG': 'A',\n    'TAT': 'Y',\n    'TAC': 'Y',\n    'TAA': 'STOP',\n    'TAG': 'STOP',\n    'CAT': 'H',\n    'CAC': 'H',\n    'CAA': 'Q',\n    'CAG': 'Q',\n    'AAT': 'N',\n    'AAC': 'N',\n    'AAA': 'K',\n    'AAG': 'K',\n    'GAT': 'D',\n    'GAC': 'D',\n    'GAA': 'E',\n    'GAG': 'E',\n    'TGT': 'C',\n    'TGC': 'C',\n    'TGA': 'STOP',\n    'TGG': 'W',\n    'CGT': 'R',\n    'CGC': 'R',\n    'CGA': 'R',\n    'CGG': 'R',\n    'AGT': 'S',\n    'AGC': 'S',\n    'AGA': 'R',\n    'AGG': 'R',\n    'GGT': 'G',\n    'GGC': 'G',\n    'GGA': 'G',\n    'GGG': 'G'\n}\n\nconst complement = {}\nconst t1 = ['A', 'G', 'C', 'T', 'Y', 'R', 'W', 'S', 'K', 'M', 'D', 'V', 'H', 'B', 'N', 'X']\nconst t2 = ['T', 'C', 'G', 'A', 'R', 'Y', 'W', 'S', 'M', 'K', 'H', 'B', 'D', 'V', 'N', 'X']\nfor (let i = 0; i < t1.length; i++) {\n    complement[t1[i]] = t2[i]\n    complement[t1[i].toLowerCase()] = t2[i].toLowerCase()\n}\n\nconst DEFAULT_HEIGHT = 25\nconst TRANSLATED_HEIGHT = 115\nconst SEQUENCE_HEIGHT = 15\nconst FRAME_HEIGHT = 25\nconst FRAME_BORDER = 5\nconst BP_PER_PIXEL_THRESHOLD = 1 / 10\n\nconst bppFeatureFetchThreshold = 10\n\nclass SequenceTrack {\n\n    constructor(config, browser) {\n\n        this.config = config\n        this.browser = browser\n        this.type = \"sequence\"\n        this.removable = config.removable === undefined ? true : config.removable      // Defaults to true\n        this.name = config.name\n        this.id = config.id\n        this.sequenceType = config.sequenceType || \"dna\"             //   dna | rna | prot\n        this.disableButtons = false\n        this.order = config.order || defaultSequenceTrackOrder\n        this.ignoreTrackMenu = false\n\n        this.reversed = config.reversed === true\n        this.frameTranslate = config.frameTranslate === true\n        this.height = this.frameTranslate ? TRANSLATED_HEIGHT : DEFAULT_HEIGHT\n\n        // Hack for backward compatibility\n        if(config.url) {\n            config.fastaURL = config.url\n        }\n\n        if(!config.fastaURL) {\n            // Mark this as the genome reference sequence ==> backward compatibility convention\n            this.id = config.id || \"sequence\"\n        }\n\n    }\n\n    menuItemList() {\n        return [\n            {\n                name: this.reversed ? \"Forward\" : \"Reverse\",\n                click: () => {\n                    this.reversed = !this.reversed\n                    this.trackView.repaintViews()\n                }\n            },\n            {\n                name: this.frameTranslate ? \"Close Translation\" : \"Three-frame Translate\",\n                click: () => {\n                    this.frameTranslate = !this.frameTranslate\n                    if (this.frameTranslate) {\n                        for (let vp of this.trackView.viewports) {\n                            vp.setContentHeight(TRANSLATED_HEIGHT)\n                        }\n                        this.trackView.setTrackHeight(TRANSLATED_HEIGHT)\n                    } else {\n                        for (let vp of this.trackView.viewports) {\n                            vp.setContentHeight(DEFAULT_HEIGHT)\n                        }\n                        this.trackView.setTrackHeight(DEFAULT_HEIGHT)\n                    }\n                    this.trackView.repaintViews()\n\n                }\n            }\n        ]\n    }\n\n    contextMenuItemList(clickState) {\n        const viewport = clickState.viewport\n        if (viewport.referenceFrame.bpPerPixel <= 1) {\n            const pixelWidth = viewport.getWidth()\n            const bpWindow = pixelWidth * viewport.referenceFrame.bpPerPixel\n            const chr = viewport.referenceFrame.chr\n            const start = Math.floor(viewport.referenceFrame.start)\n            const end = Math.ceil(start + bpWindow)\n            const items = [\n                {\n                    label: this.reversed ? 'View visible sequence (reversed)...' : 'View visible sequence...',\n                    click: async () => {\n                        let seq = await this.browser.genome.sequence.getSequence(chr, start, end)\n                        if (!seq) {\n                            seq = \"Unknown sequence\"\n                        } else if (this.reversed) {\n                            seq = reverseComplementSequence(seq)\n                        }\n                        this.browser.alert.present(seq)\n                    }\n                }\n            ]\n            if (isSecureContext()) {\n                items.push({\n                    label: 'Copy visible sequence',\n                    click: async () => {\n                        let seq = await this.browser.genome.sequence.getSequence(chr, start, end)\n                        if (!seq) {\n                            seq = \"Unknown sequence\"\n                        } else if (this.reversed) {\n                            seq = reverseComplementSequence(seq)\n                        }\n                        try {\n                            await navigator.clipboard.writeText(seq)\n                        } catch (e) {\n                            console.error(e)\n                            this.browser.alert.present(`error copying sequence to clipboard ${e}`)\n                        }\n                    }\n\n                })\n            }\n            items.push('<hr/>')\n\n            return items\n        } else {\n            return undefined\n        }\n    }\n\n    translateSequence(seq) {\n\n        const threeFrame = [[], [], []]\n\n        for (let fNum of [0, 1, 2]) {\n            let idx = fNum\n\n            while ((seq.length - idx) >= 3) {\n                let st = seq.slice(idx, idx + 3)\n                if (this.reversed) {\n                    st = st.split('').reverse().join('')\n                }\n\n                const aa = translationDict[st.toUpperCase()] || \"\"\n                threeFrame[fNum].push({\n                    codons: st,\n                    aminoA: aa\n                })\n                idx += 3\n            }\n        }\n\n        return threeFrame\n    }\n\n    /**\n     * Return the source for sequence.  If an explicit fasta url is defined, use it, otherwise fetch sequence\n     * from the current genome\n     * *\n     * @returns {Promise<WrappedFasta|*>}\n     */\n    async getSequenceSource() {\n        if(this.config.fastaURL) {\n            if(!this.fasta) {\n                this.fasta = new WrappedFasta(this.config, this.browser.genome)\n                await this.fasta.init()\n            }\n            return this.fasta\n        } else {\n            return this.browser.genome.sequence\n        }\n    }\n\n    async getFeatures(chr, start, end, bpPerPixel) {\n\n        start = Math.floor(start)\n        end = Math.floor(end)\n\n        if (bpPerPixel && bpPerPixel > bppFeatureFetchThreshold) {\n            return null\n        } else {\n            const sequenceSource = await this.getSequenceSource()\n            const sequence = await sequenceSource.getSequence(chr, start, end)\n            return {\n                bpStart: start,\n                sequence: sequence\n            }\n        }\n    }\n\n    draw(options) {\n\n        const ctx = options.context\n\n        if (options.features) {\n\n            let sequence = options.features.sequence\n            if(!sequence) {\n                return\n            }\n\n            if (this.reversed) {\n                sequence = sequence.split('').map(function (cv) {\n                    return complement[cv]\n                }).join('')\n            }\n\n            const sequenceBpStart = options.features.bpStart  // genomic position at start of sequence\n            const bpEnd = 1 + options.bpStart + (options.pixelWidth * options.bpPerPixel)\n\n            for (let bp = Math.floor(options.bpStart); bp <= bpEnd; bp++) {\n\n                const seqIdx = Math.floor(bp - sequenceBpStart)\n\n                if (seqIdx >= 0 && seqIdx < sequence.length) {\n\n                    const offsetBP = bp - options.bpStart\n                    const aPixel = offsetBP / options.bpPerPixel\n                    const pixelWidth = 1 / options.bpPerPixel\n                    const baseLetter = sequence[seqIdx]\n                    const color = this.fillColor(baseLetter.toUpperCase())\n\n                    if (options.bpPerPixel > BP_PER_PIXEL_THRESHOLD) {\n                        IGVGraphics.fillRect(ctx, aPixel, FRAME_BORDER, pixelWidth, SEQUENCE_HEIGHT - FRAME_BORDER, {fillStyle: color})\n                    } else {\n                        const textPixel = aPixel + 0.5 * (pixelWidth - ctx.measureText(baseLetter).width)\n\n\n\n\n                        if ('y' === options.axis) {\n                            ctx.save()\n                            IGVGraphics.labelTransformWithContext(ctx, textPixel)\n                            IGVGraphics.strokeText(ctx, baseLetter, textPixel, SEQUENCE_HEIGHT, {strokeStyle: color})\n                            ctx.restore()\n                        } else {\n                            IGVGraphics.strokeText(ctx, baseLetter, textPixel, SEQUENCE_HEIGHT, {strokeStyle: color})\n                        }\n\n                    }\n                }\n            }\n\n            if (this.frameTranslate) {\n\n                let y = SEQUENCE_HEIGHT + 2 * FRAME_BORDER\n                const translatedSequence = this.translateSequence(sequence)\n\n                for (let fNum = 0; fNum < translatedSequence.length; fNum++) {    // == 3, 1 for each frame\n\n                    const aaSequence = translatedSequence[fNum]  // AA sequence for this frame\n\n                    for (let idx = 0; idx < aaSequence.length; idx++) {\n\n                        let color = 0 === idx % 2 ? 'rgb(160,160,160)' : 'rgb(224,224,224)'\n                        const cv = aaSequence[idx]\n\n                        const bpPos = sequenceBpStart + fNum + (idx * 3)\n                        const bpOffset = bpPos - options.bpStart\n                        const p0 = Math.floor(bpOffset / options.bpPerPixel)\n                        const p1 = Math.floor((bpOffset + 3) / options.bpPerPixel)\n                        const pc = Math.round((p0 + p1) / 2)\n\n                        if (p1 < 0) {\n                            continue   // off left edge\n                        } else if (p0 > options.pixelWidth) {\n                            break      // off right edge\n                        }\n\n                        let aaLabel = cv.aminoA\n                        if (cv.aminoA.indexOf('STOP') > -1) {\n                            color = 'rgb(255, 0, 0)'\n                            aaLabel = 'STOP' //Color blind accessible\n                        } else if (cv.aminoA === 'M') {\n                            color = 'rgb(0, 153, 0)'\n                            aaLabel = 'START' //Color blind accessible\n                        }\n\n                        IGVGraphics.fillRect(ctx, p0, y, p1 - p0, FRAME_HEIGHT, {fillStyle: color})\n\n                        if (options.bpPerPixel <= 1 / 10) {\n                            IGVGraphics.strokeText(ctx, aaLabel, pc - (ctx.measureText(aaLabel).width / 2), y + 15)\n                        }\n                    }\n                    y += (FRAME_HEIGHT + FRAME_BORDER)\n                }\n            }\n        }\n    }\n\n    get supportsWholeGenome() {\n        return false\n    }\n\n    computePixelHeight(ignore) {\n        this.height = this.frameTranslate ? TRANSLATED_HEIGHT : DEFAULT_HEIGHT\n        return this.height\n    }\n\n    fillColor(index) {\n\n        if (this.color) {\n            return this.color\n        } else if (\"dna\" === this.sequenceType) {\n            // return this.browser.nucleotideColors[index] || 'gray'\n            return defaultNucleotideColors[index] || 'gray'\n        } else {\n            return 'rgb(0, 0, 150)'\n        }\n    }\n\n    /**\n     * Return the current state of the track.  Used to create sessions and bookmarks.\n     *\n     * @returns {*|{}}\n     */\n    getState() {\n        const config = {\n            type: \"sequence\"\n        }\n        if (this.order !== defaultSequenceTrackOrder) {\n            config.order = this.order\n        }\n        if (this.reversed) {\n            config.revealed = true\n        }\n        return config\n    }\n\n}\n\n/**\n * Wrapper for a Fasta object that does chr name alias translation.   This is not neccessary for the genome fasta,\n * as it defines the reference name, but can be neccessary if loading an additional fasta as a track\n *\n */\nclass WrappedFasta {\n\n    constructor(config, genome) {\n        this.config = config;\n        this.genome = genome\n    }\n\n    async init() {\n        this.fasta = await loadFasta(this.config)\n        this.chrNameMap = new Map()\n        for(let name of this.fasta.chromosomeNames) {\n            this.chrNameMap.set(this.genome.getChromosomeName(name), name)\n        }\n    }\n\n    async getSequence(chr, start, end) {\n        const chrName = this.chrNameMap.has(chr) ? this.chrNameMap.get(chr) : chr\n        return this.fasta.getSequence(chrName, start, end)\n    }\n\n}\n\nexport {defaultSequenceTrackOrder, bppFeatureFetchThreshold}\n\nexport default SequenceTrack\n\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport $ from \"./vendor/jquery-3.3.1.slim.js\"\nimport {DOMUtils, AlertDialog} from '../node_modules/igv-ui/dist/igv-ui.js'\nimport SequenceTrack from \"./sequenceTrack.js\"\n\nclass Viewport {\n\n    constructor(trackView, viewportColumn, referenceFrame, width) {\n\n        this.guid = DOMUtils.guid()\n        this.trackView = trackView\n        this.referenceFrame = referenceFrame\n\n        this.browser = trackView.browser\n\n        this.$viewport = $('<div class=\"igv-viewport\">')\n        viewportColumn.appendChild(this.$viewport.get(0))\n\n        if (trackView.track.height) {\n            this.$viewport.get(0).style.height = `${trackView.track.height}px`\n        }\n\n        // Create an alert dialog for the sequence track to copy ref sequence to.\n        if (trackView.track instanceof SequenceTrack) {\n            this.alert = new AlertDialog(this.$viewport.get(0))\n        }\n\n        this.contentTop = 0\n        this.contentHeight = this.$viewport.height()\n\n\n        this.$viewport.width(width)\n\n        this.initializationHelper()\n\n    }\n\n    initializationHelper() {\n\n    }\n\n    showMessage(message) {\n        if (!this.messageDiv) {\n            this.messageDiv = document.createElement('div')\n            this.messageDiv.className = 'igv-viewport-message'\n            //this.contentDiv.append(this.messageDiv)\n            this.$viewport.append($(this.messageDiv))\n        }\n        this.messageDiv.textContent = message\n        this.messageDiv.style.display = 'inline-block'\n    }\n\n    hideMessage(message) {\n        if (this.messageDiv)\n            this.messageDiv.style.display = 'none'\n    }\n\n    setTrackLabel(label) {\n    }\n\n    startSpinner() {\n    }\n\n    stopSpinner() {\n    }\n\n    checkZoomIn() {\n        return true\n    }\n\n    shift() {\n    }\n\n    setTop(contentTop) {\n\n        this.contentTop = contentTop\n        const viewportHeight = this.$viewport.height()\n        const viewTop = -contentTop\n        const viewBottom = viewTop + viewportHeight\n\n        //this.$content.css('top', `${contentTop}px`)\n        //\n        // if (undefined === this.canvasVerticalRange || this.canvasVerticalRange.bottom < viewBottom || this.canvasVerticalRange.top > viewTop) {\n        //     console.log(\"Repaint \" + this.canvasVerticalRange)\n        //    this.repaint()\n        // }\n\n    }\n\n    async loadFeatures() {\n        return undefined\n    }\n\n    clearCache() {\n\n    }\n\n    async repaint() {\n    }\n\n    draw(drawConfiguration, features, roiFeatures) {\n        console.log('Viewport - draw(drawConfiguration, features, roiFeatures)')\n    }\n\n    checkContentHeight(features) {\n\n        let track = this.trackView.track\n        features = features || this.cachedFeatures\n        if (\"FILL\" === track.displayMode) {\n            this.setContentHeight(this.$viewport.height())\n        } else if (typeof track.computePixelHeight === 'function') {\n            if (features && features.length > 0) {\n                let requiredContentHeight = track.computePixelHeight(features)\n                //let currentContentHeight = this.$content.height()\n                let currentContentHeight = this.contentHeight\n                if (requiredContentHeight !== currentContentHeight) {\n                    this.setContentHeight(requiredContentHeight)\n                }\n            }\n        }\n    }\n\n    getContentHeight() {\n        //return this.$content.height()\n        return this.contentHeight\n    }\n\n    setContentHeight(contentHeight) {\n       this.contentHeight = contentHeight\n    }\n\n    isLoading() {\n        return false\n    }\n\n    saveSVG() {\n\n    }\n\n    isVisible() {\n        return this.$viewport.width()\n    }\n\n    setWidth(width) {\n        this.$viewport.width(width)\n    }\n\n    getWidth() {\n        return this.$viewport.width()\n    }\n\n    getContentTop() {\n        return this.contentTop\n    }\n\n    containsPosition(chr, position) {\n        console.log('Viewport - containsPosition(chr, position)')\n    }\n\n    addMouseHandlers() {\n    }\n\n    removeMouseHandlers() {\n    }\n\n    /**\n     * Called when the associated track is removed.  Do any needed cleanup here.\n     */\n    dispose() {\n\n        if (this.popover) {\n            this.popover.dispose()\n        }\n\n        this.$viewport.get(0).remove()\n\n        // Null out all properties -- this should not be neccessary, but just in case there is a\n        // reference to self somewhere we want to free memory.\n        for (let key of Object.keys(this)) {\n            this[key] = undefined\n        }\n    }\n\n}\n\nexport default Viewport\n","/*!!\n *  Canvas 2 Svg v1.0.19\n *  A low level canvas to SVG converter. Uses a mock canvas context to build an SVG document.\n *\n *  Licensed under the MIT license:\n *  http://www.opensource.org/licenses/mit-license.php\n *\n *  Author:\n *  Kerry Liu\n *\n *  Copyright (c) 2014 Gliffy Inc.\n */\n\n\"use strict\"\n\n//helper function to format a string\nfunction format(str, args) {\n    var keys = Object.keys(args), i\n    for (i = 0; i < keys.length; i++) {\n        str = str.replace(new RegExp(\"\\\\{\" + keys[i] + \"\\\\}\", \"gi\"), args[keys[i]])\n    }\n    return str\n}\n\n//helper function that generates a random string\nfunction randomString(holder) {\n    var chars, randomstring, i\n    if (!holder) {\n        throw new Error(\"cannot create a random attribute name for an undefined object\")\n    }\n    chars = \"ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz\"\n    randomstring = \"\"\n    do {\n        randomstring = \"\"\n        for (i = 0; i < 12; i++) {\n            randomstring += chars[Math.floor(Math.random() * chars.length)]\n        }\n    } while (holder[randomstring])\n    return randomstring\n}\n\n//helper function to map named to numbered entities\nfunction createNamedToNumberedLookup(items, radix) {\n    var i, entity, lookup = {}, base10, base16\n    items = items.split(',')\n    radix = radix || 10\n    // Map from named to numbered entities.\n    for (i = 0; i < items.length; i += 2) {\n        entity = '&' + items[i + 1] + ';'\n        base10 = parseInt(items[i], radix)\n        lookup[entity] = '&#' + base10 + ';'\n    }\n    //FF and IE need to create a regex from hex values ie &nbsp; == \\xa0\n    lookup[\"\\\\xa0\"] = '&#160;'\n    return lookup\n}\n\n//helper function to map canvas-textAlign to svg-textAnchor\nfunction getTextAnchor(textAlign) {\n    //TODO: support rtl languages\n    var mapping = {\"left\": \"start\", \"right\": \"end\", \"center\": \"middle\", \"start\": \"start\", \"end\": \"end\"}\n    return mapping[textAlign] || mapping.start\n}\n\n//helper function to map canvas-textBaseline to svg-dominantBaseline\nfunction getDominantBaseline(textBaseline) {\n    //INFO: not supported in all browsers\n    var mapping = {\n        \"alphabetic\": \"alphabetic\",\n        \"hanging\": \"hanging\",\n        \"top\": \"text-before-edge\",\n        \"bottom\": \"text-after-edge\",\n        \"middle\": \"central\"\n    }\n    return mapping[textBaseline] || mapping.alphabetic\n}\n\n\n/**\n * Return a new normalized vector of given vector\n */\nfunction normalize(vector) {\n    var len = Math.sqrt(vector[0] * vector[0] + vector[1] * vector[1])\n    return [vector[0] / len, vector[1] / len]\n}\n\n\nfunction intersectRect(rect1, rect2) {\n    return (rect1.x < rect2.x + rect2.width &&\n        rect1.x + rect1.width > rect2.x &&\n        rect1.y < rect2.y + rect2.height &&\n        rect1.y + rect1.height > rect2.y)\n}\n\n\n// Unpack entities lookup where the numbers are in radix 32 to reduce the size\n// entity mapping courtesy of tinymce\nconst namedEntities = createNamedToNumberedLookup(\n    '50,nbsp,51,iexcl,52,cent,53,pound,54,curren,55,yen,56,brvbar,57,sect,58,uml,59,copy,' +\n    '5a,ordf,5b,laquo,5c,not,5d,shy,5e,reg,5f,macr,5g,deg,5h,plusmn,5i,sup2,5j,sup3,5k,acute,' +\n    '5l,micro,5m,para,5n,middot,5o,cedil,5p,sup1,5q,ordm,5r,raquo,5s,frac14,5t,frac12,5u,frac34,' +\n    '5v,iquest,60,Agrave,61,Aacute,62,Acirc,63,Atilde,64,Auml,65,Aring,66,AElig,67,Ccedil,' +\n    '68,Egrave,69,Eacute,6a,Ecirc,6b,Euml,6c,Igrave,6d,Iacute,6e,Icirc,6f,Iuml,6g,ETH,6h,Ntilde,' +\n    '6i,Ograve,6j,Oacute,6k,Ocirc,6l,Otilde,6m,Ouml,6n,times,6o,Oslash,6p,Ugrave,6q,Uacute,' +\n    '6r,Ucirc,6s,Uuml,6t,Yacute,6u,THORN,6v,szlig,70,agrave,71,aacute,72,acirc,73,atilde,74,auml,' +\n    '75,aring,76,aelig,77,ccedil,78,egrave,79,eacute,7a,ecirc,7b,euml,7c,igrave,7d,iacute,7e,icirc,' +\n    '7f,iuml,7g,eth,7h,ntilde,7i,ograve,7j,oacute,7k,ocirc,7l,otilde,7m,ouml,7n,divide,7o,oslash,' +\n    '7p,ugrave,7q,uacute,7r,ucirc,7s,uuml,7t,yacute,7u,thorn,7v,yuml,ci,fnof,sh,Alpha,si,Beta,' +\n    'sj,Gamma,sk,Delta,sl,Epsilon,sm,Zeta,sn,Eta,so,Theta,sp,Iota,sq,Kappa,sr,Lambda,ss,Mu,' +\n    'st,Nu,su,Xi,sv,Omicron,t0,Pi,t1,Rho,t3,Sigma,t4,Tau,t5,Upsilon,t6,Phi,t7,Chi,t8,Psi,' +\n    't9,Omega,th,alpha,ti,beta,tj,gamma,tk,delta,tl,epsilon,tm,zeta,tn,eta,to,theta,tp,iota,' +\n    'tq,kappa,tr,lambda,ts,mu,tt,nu,tu,xi,tv,omicron,u0,pi,u1,rho,u2,sigmaf,u3,sigma,u4,tau,' +\n    'u5,upsilon,u6,phi,u7,chi,u8,psi,u9,omega,uh,thetasym,ui,upsih,um,piv,812,bull,816,hellip,' +\n    '81i,prime,81j,Prime,81u,oline,824,frasl,88o,weierp,88h,image,88s,real,892,trade,89l,alefsym,' +\n    '8cg,larr,8ch,uarr,8ci,rarr,8cj,darr,8ck,harr,8dl,crarr,8eg,lArr,8eh,uArr,8ei,rArr,8ej,dArr,' +\n    '8ek,hArr,8g0,forall,8g2,part,8g3,exist,8g5,empty,8g7,nabla,8g8,isin,8g9,notin,8gb,ni,8gf,prod,' +\n    '8gh,sum,8gi,minus,8gn,lowast,8gq,radic,8gt,prop,8gu,infin,8h0,ang,8h7,and,8h8,or,8h9,cap,8ha,cup,' +\n    '8hb,int,8hk,there4,8hs,sim,8i5,cong,8i8,asymp,8j0,ne,8j1,equiv,8j4,le,8j5,ge,8k2,sub,8k3,sup,8k4,' +\n    'nsub,8k6,sube,8k7,supe,8kl,oplus,8kn,otimes,8l5,perp,8m5,sdot,8o8,lceil,8o9,rceil,8oa,lfloor,8ob,' +\n    'rfloor,8p9,lang,8pa,rang,9ea,loz,9j0,spades,9j3,clubs,9j5,hearts,9j6,diams,ai,OElig,aj,oelig,b0,' +\n    'Scaron,b1,scaron,bo,Yuml,m6,circ,ms,tilde,802,ensp,803,emsp,809,thinsp,80c,zwnj,80d,zwj,80e,lrm,' +\n    '80f,rlm,80j,ndash,80k,mdash,80o,lsquo,80p,rsquo,80q,sbquo,80s,ldquo,80t,rdquo,80u,bdquo,810,dagger,' +\n    '811,Dagger,81g,permil,81p,lsaquo,81q,rsaquo,85c,euro', 32)\n\n\n//Some basic mappings for attributes and default values.\nconst STYLES = {\n    \"strokeStyle\": {\n        svgAttr: \"stroke\", //corresponding svg attribute\n        canvas: \"#000000\", //canvas default\n        svg: \"none\",       //svg default\n        apply: \"stroke\"    //apply on stroke() or fill()\n    },\n    \"fillStyle\": {\n        svgAttr: \"fill\",\n        canvas: \"#000000\",\n        svg: null, //svg default is black, but we need to special case this to handle canvas stroke without fill\n        apply: \"fill\"\n    },\n    \"lineCap\": {\n        svgAttr: \"stroke-linecap\",\n        canvas: \"butt\",\n        svg: \"butt\",\n        apply: \"stroke\"\n    },\n    \"lineJoin\": {\n        svgAttr: \"stroke-linejoin\",\n        canvas: \"miter\",\n        svg: \"miter\",\n        apply: \"stroke\"\n    },\n    \"miterLimit\": {\n        svgAttr: \"stroke-miterlimit\",\n        canvas: 10,\n        svg: 4,\n        apply: \"stroke\"\n    },\n    \"lineWidth\": {\n        svgAttr: \"stroke-width\",\n        canvas: 1,\n        svg: 1,\n        apply: \"stroke\"\n    },\n    \"globalAlpha\": {\n        svgAttr: \"opacity\",\n        canvas: 1,\n        svg: 1,\n        apply: \"fill stroke\"\n    },\n    \"font\": {\n        //font converts to multiple svg attributes, there is custom logic for this\n        canvas: \"10px sans-serif\"\n    },\n    \"shadowColor\": {\n        canvas: \"#000000\"\n    },\n    \"shadowOffsetX\": {\n        canvas: 0\n    },\n    \"shadowOffsetY\": {\n        canvas: 0\n    },\n    \"shadowBlur\": {\n        canvas: 0\n    },\n    \"textAlign\": {\n        canvas: \"start\"\n    },\n    \"textBaseline\": {\n        canvas: \"alphabetic\"\n    },\n    \"lineDash\": {\n        svgAttr: \"stroke-dasharray\",\n        canvas: [],\n        svg: null,\n        apply: \"stroke\"\n    }\n}\n\n/**\n *\n * @param gradientNode - reference to the gradient\n * @constructor\n */\nclass CanvasGradient {\n    constructor(gradientNode, ctx) {\n        this.__root = gradientNode\n        this.__ctx = ctx\n    }\n\n    /**\n     * Adds a color stop to the gradient root\n     */\n    addColorStop(offset, color) {\n        var stop = this.__ctx.__createElement(\"stop\"), regex, matches\n        stop.setAttribute(\"offset\", offset)\n        if (color && color.indexOf(\"rgba\") !== -1) {\n            //separate alpha value, since webkit can't handle it\n            regex = /rgba\\(\\s*(\\d+)\\s*,\\s*(\\d+)\\s*,\\s*(\\d+)\\s*,\\s*(\\d?\\.?\\d*)\\s*\\)/gi\n            matches = regex.exec(color)\n            stop.setAttribute(\"stop-color\", format(\"rgb({r},{g},{b})\", {r: matches[1], g: matches[2], b: matches[3]}))\n            stop.setAttribute(\"stop-opacity\", matches[4])\n        } else {\n            stop.setAttribute(\"stop-color\", color)\n        }\n        this.__root.appendChild(stop)\n    }\n}\n\nclass CanvasPattern {\n    constructor(pattern, ctx) {\n        this.__root = pattern\n        this.__ctx = ctx\n    }\n}\n\n/**\n * The mock canvas context\n * @param config - options include:\n * ctx - existing Context2D to wrap around\n * width - width of your canvas (defaults to 500)\n * height - height of your canvas (defaults to 500)\n * enableMirroring - enables canvas mirroring (get image data) (defaults to false)\n * document - the document object (defaults to the current document)\n */\nclass ctx {\n    constructor(config) {\n\n        if (!(this instanceof ctx)) {\n            //did someone call this without new?\n            return new ctx(config)\n        }\n\n        // clone config\n        this.config = config\n\n        //setup options\n        this.width = config.width\n        this.height = config.height\n        this.enableMirroring = config.enableMirroring || false\n\n        this.canvas = this   ///point back to this instance!\n        this.__document = document\n\n        // allow passing in an existing context to wrap around\n        // if a context is passed in, we know a canvas already exist\n        if (config.ctx) {\n            this.__ctx = config.ctx\n        } else {\n            this.__canvas = this.__document.createElement(\"canvas\")\n            this.__ctx = this.__canvas.getContext(\"2d\")\n        }\n\n        // give this canvas a type\n        this.isSVG = true\n\n        this.__setDefaultStyles()\n        this.__stack = [this.__getStyleState()]\n        this.__groupStack = []\n\n        // root svg element\n        this.__root = this.__createElement(\"svg\")\n        this.__root.setAttribute(\"width\", this.width)\n        this.__root.setAttribute(\"height\", this.height)\n\n        // allow contents to overflow svg bbox\n        this.__root.setAttribute('overflow', 'visible')\n\n        // viewbox\n        if (config.viewbox) {\n            const str = config.viewbox.x + ' ' + config.viewbox.y + ' ' + config.viewbox.width + ' ' + config.viewbox.height\n            this.__root.setAttribute(\"viewBox\", str)\n\n            this.viewbox = config.viewbox\n        }\n\n        // make sure we don't generate the same ids in defs\n        this.__ids = {}\n\n        // defs\n        this.__defs = this.__createElement(\"defs\")\n        this.__root.appendChild(this.__defs)\n\n        this.multiLocusGap = config.multiLocusGap\n\n        // svg background color\n        let backdropConfig =\n            {\n                id: 'svg_output_backdrop',\n                width: '100%',\n                height: '100%',\n                fill: config.backdropColor || 'white'\n            }\n\n        let backdropRect = this.__createElement('rect', backdropConfig)\n        this.__root.appendChild(backdropRect)\n\n        // root group\n        this.__rootGroup = this.__createElement('g', {id: 'root-group'})\n        this.__root.appendChild(this.__rootGroup)\n\n        // point current element to root group\n        this.__currentElement = this.__rootGroup\n    }\n\n    setWidth(width) {\n\n        this.width = width\n        this.__root.setAttribute(\"width\", this.width)\n\n        const str = this.config.viewbox.x + ' ' + this.config.viewbox.y + ' ' + width + ' ' + this.config.viewbox.height\n        this.__root.setAttribute(\"viewBox\", str)\n\n    };\n\n    setHeight(height) {\n\n        this.height = height\n        this.__root.setAttribute(\"height\", this.height)\n\n        const str = this.config.viewbox.x + ' ' + this.config.viewbox.y + ' ' + this.config.viewbox.width + ' ' + height\n        this.__root.setAttribute(\"viewBox\", str)\n\n    };\n\n    /**\n     * Creates the specified svg element\n     * @private\n     */\n    __createElement(elementName, properties, resetFill) {\n\n        if (typeof properties === \"undefined\") {\n            properties = {}\n        }\n\n        let element = this.__document.createElementNS(\"http://www.w3.org/2000/svg\", elementName)\n\n        if (resetFill) {\n            //if fill or stroke is not specified, the svg element should not display. By default SVG's fill is black.\n            element.setAttribute(\"fill\", \"none\")\n            element.setAttribute(\"stroke\", \"none\")\n        }\n\n        for (let key of Object.keys(properties)) {\n            element.setAttribute(key, properties[key])\n        }\n\n        return element\n    };\n\n    /**\n     * Applies default canvas styles to the context\n     * @private\n     */\n    __setDefaultStyles() {\n        //default 2d canvas context properties see:http://www.w3.org/TR/2dcontext/\n        var keys = Object.keys(STYLES), i, key\n        for (i = 0; i < keys.length; i++) {\n            key = keys[i]\n            this[key] = STYLES[key].canvas\n        }\n    };\n\n    /**\n     * Applies styles on restore\n     * @param styleState\n     * @private\n     */\n    __applyStyleState(styleState) {\n        var keys = Object.keys(styleState), i, key\n        for (i = 0; i < keys.length; i++) {\n            key = keys[i]\n            this[key] = styleState[key]\n        }\n    };\n\n    /**\n     * Gets the current style state\n     * @return {Object}\n     * @private\n     */\n    __getStyleState() {\n        var i, styleState = {}, keys = Object.keys(STYLES), key\n        for (i = 0; i < keys.length; i++) {\n            key = keys[i]\n            styleState[key] = this[key]\n        }\n        return styleState\n    };\n\n    /**\n     * Apples the current styles to the current SVG element. On \"ctx.fill\" or \"ctx.stroke\"\n     * @param type\n     * @private\n     */\n    __applyStyleToCurrentElement(type) {\n        var currentElement = this.__currentElement\n        var currentStyleGroup = this.__currentElementsToStyle\n        if (currentStyleGroup) {\n            currentElement.setAttribute(type, \"\")\n            currentElement = currentStyleGroup.element\n            currentStyleGroup.children.forEach(function (node) {\n                node.setAttribute(type, \"\")\n            })\n        }\n\n        var keys = Object.keys(STYLES), i, style, value, id, regex, matches\n        for (i = 0; i < keys.length; i++) {\n            style = STYLES[keys[i]]\n            value = this[keys[i]]\n            if (style.apply) {\n                //is this a gradient or pattern?\n                if (value instanceof CanvasPattern) {\n                    //pattern\n                    if (value.__ctx) {\n                        //copy over defs\n                        while (value.__ctx.__defs.childNodes.length) {\n                            id = value.__ctx.__defs.childNodes[0].getAttribute(\"id\")\n                            this.__ids[id] = id\n                            this.__defs.appendChild(value.__ctx.__defs.childNodes[0])\n                        }\n                    }\n                    currentElement.setAttribute(style.apply, format(\"url(#{id})\", {id: value.__root.getAttribute(\"id\")}))\n                } else if (value instanceof CanvasGradient) {\n                    //gradient\n                    currentElement.setAttribute(style.apply, format(\"url(#{id})\", {id: value.__root.getAttribute(\"id\")}))\n                } else if (style && style.apply.indexOf(type) !== -1 && style.svg !== value) {\n                    if ((style.svgAttr === \"stroke\" || style.svgAttr === \"fill\") && value && value.indexOf(\"rgba\") !== -1) {\n                        //separate alpha value, since illustrator can't handle it\n                        regex = /rgba\\(\\s*(\\d+)\\s*,\\s*(\\d+)\\s*,\\s*(\\d+)\\s*,\\s*(\\d?\\.?\\d*)\\s*\\)/gi\n                        matches = regex.exec(value)\n                        currentElement.setAttribute(style.svgAttr, format(\"rgb({r},{g},{b})\", {\n                            r: matches[1],\n                            g: matches[2],\n                            b: matches[3]\n                        }))\n                        //should take globalAlpha here\n                        var opacity = matches[4]\n                        var globalAlpha = this.globalAlpha\n                        if (globalAlpha != null) {\n                            opacity *= globalAlpha\n                        }\n                        currentElement.setAttribute(style.svgAttr + \"-opacity\", opacity)\n                    } else {\n                        var attr = style.svgAttr\n                        if (keys[i] === 'globalAlpha') {\n                            attr = type + '-' + style.svgAttr\n                            if (currentElement.getAttribute(attr)) {\n                                //fill-opacity or stroke-opacity has already been set by stroke or fill.\n                                continue\n                            }\n                        }\n                        //otherwise only update attribute if right type, and not svg default\n                        currentElement.setAttribute(attr, value)\n                    }\n                }\n            }\n        }\n    };\n\n    /**\n     * Will return the closest group or svg node. May return the current element.\n     * @private\n     */\n    __closestGroupOrSvg(node) {\n        node = node || this.__currentElement\n        if (node.nodeName === \"g\" || node.nodeName === \"svg\") {\n            return node\n        } else {\n            return this.__closestGroupOrSvg(node.parentNode)\n        }\n    };\n\n    /**\n     * Returns the serialized value of the svg so far\n     * @param fixNamedEntities - Standalone SVG doesn't support named entities, which document.createTextNode encodes.\n     *                           If true, we attempt to find all named entities and encode it as a numeric entity.\n     * @return serialized svg\n     */\n    getSerializedSvg(fixNamedEntities) {\n        var serialized = new XMLSerializer().serializeToString(this.__root),\n            keys, i, key, value, regexp, xmlns\n\n        //IE search for a duplicate xmnls because they didn't implement setAttributeNS correctly\n        // xmlns = /xmlns=\"http:\\/\\/www\\.w3\\.org\\/2000\\/svg\".+xmlns=\"http:\\/\\/www\\.w3\\.org\\/2000\\/svg/gi;\n        // if (xmlns.test(serialized)) {\n        //     serialized = serialized.replace('xmlns=\"http://www.w3.org/2000/svg','xmlns:xlink=\"http://www.w3.org/1999/xlink');\n        // }\n\n        if (fixNamedEntities) {\n            keys = Object.keys(namedEntities)\n            //loop over each named entity and replace with the proper equivalent.\n            for (i = 0; i < keys.length; i++) {\n                key = keys[i]\n                value = namedEntities[key]\n                regexp = new RegExp(key, \"gi\")\n                if (regexp.test(serialized)) {\n                    serialized = serialized.replace(regexp, value)\n                }\n            }\n        }\n\n        return serialized\n    };\n\n\n    /**\n     * Returns the root svg\n     * @return\n     */\n    getSvg() {\n        return this.__root\n    };\n\n    /**\n     * Will generate a group tag.\n     */\n    saveWithTranslationAndClipRect(id, tx, ty, width, height, clipYOffset) {\n\n        // clip rect\n        const clip_id = `${id}_clip_rect`\n        let clipPath = this.__createElement('clipPath', {id: clip_id})\n\n        this.__defs.appendChild(clipPath)\n\n        const config =\n            {\n                x: '0',\n                y: clipYOffset.toString(),\n                width: width.toString(),\n                height: height.toString()\n            }\n\n        clipPath.appendChild(this.__createElement('rect', config))\n\n        const group = this.__createElement(\"g\")\n        group.setAttribute('transform', format('translate({x},{y})', {x: tx, y: ty}))\n        group.setAttribute('clip-path', format('url(#{id})', {id: clip_id}))\n\n        const parent = this.__closestGroupOrSvg()\n        parent.appendChild(group)\n        this.__groupStack.push(parent)\n\n        this.__currentElement = group\n        this.__stack.push(this.__getStyleState())\n    };\n\n    save() {\n        var group = this.__createElement(\"g\")\n        var parent = this.__closestGroupOrSvg()\n        this.__groupStack.push(parent)\n        parent.appendChild(group)\n        this.__currentElement = group\n        this.__stack.push(this.__getStyleState())\n    };\n\n    /**\n     * Sets current element to parent, or just root if already root\n     */\n    restore() {\n        this.__currentElement = this.__groupStack.pop()\n        this.__currentElementsToStyle = null\n        //Clearing canvas will make the poped group invalid, currentElement is set to the root group node.\n        if (!this.__currentElement) {\n            this.__currentElement = this.__root.childNodes[1]\n        }\n        var state = this.__stack.pop()\n        this.__applyStyleState(state)\n    };\n\n    /**\n     * Helper method to add transform\n     * @private\n     */\n    __addTransform(t) {\n        //if the current element has siblings, add another group\n        var parent = this.__closestGroupOrSvg()\n        if (parent.childNodes.length > 0) {\n            if (this.__currentElement.nodeName === \"path\") {\n                if (!this.__currentElementsToStyle) this.__currentElementsToStyle = {element: parent, children: []}\n                this.__currentElementsToStyle.children.push(this.__currentElement)\n                this.__applyCurrentDefaultPath()\n            }\n\n            var group = this.__createElement(\"g\")\n            parent.appendChild(group)\n            this.__currentElement = group\n        }\n\n        var transform = this.__currentElement.getAttribute(\"transform\")\n        if (transform) {\n            transform += \" \"\n        } else {\n            transform = \"\"\n        }\n        transform += t\n        this.__currentElement.setAttribute(\"transform\", transform)\n    };\n\n    addTrackGroupWithTranslationAndClipRect(id, tx, ty, width, height, clipYOffset) {\n\n        // clip rect\n        const clip_id = id + '_clip_rect'\n        let clipPath = this.__createElement('clipPath', {id: clip_id})\n\n        this.__defs.appendChild(clipPath)\n        clipPath.appendChild(this.__createElement('rect', {\n            x: '0',\n            y: clipYOffset.toString(),\n            width: width.toString(),\n            height: height.toString()\n        }))\n\n        let group = this.__createElement('g')\n        this.__rootGroup.appendChild(group)\n\n        group.setAttribute('transform', format('translate({x},{y})', {x: tx, y: ty}))\n        group.setAttribute('id', (id + '_group'))\n\n        // add clip rect\n        group.setAttribute('clip-path', format('url(#{id})', {id: clip_id}))\n\n        this.__currentElement = group\n    };\n\n    /**\n     *  scales the current element\n     */\n    scale(x, y) {\n        if (y === undefined) {\n            y = x\n        }\n        this.__addTransform(format(\"scale({x},{y})\", {x: x, y: y}))\n    };\n\n    /**\n     * rotates the current element\n     */\n    rotate(angle) {\n        var degrees = (angle * 180 / Math.PI)\n        this.__addTransform(format(\"rotate({angle},{cx},{cy})\", {angle: degrees, cx: 0, cy: 0}))\n    };\n\n    /**\n     * translates the current element\n     */\n    translate(x, y) {\n        this.__addTransform(format(\"translate({x},{y})\", {x: x, y: y}))\n    };\n\n    /**\n     * applies a transform to the current element\n     */\n    transform(a, b, c, d, e, f) {\n        this.__addTransform(format(\"matrix({a},{b},{c},{d},{e},{f})\", {a: a, b: b, c: c, d: d, e: e, f: f}))\n    };\n\n    /**\n     * Create a new Path Element\n     */\n    beginPath() {\n        var path, parent\n\n        // Note that there is only one current default path, it is not part of the drawing state.\n        // See also: https://html.spec.whatwg.org/multipage/scripting.html#current-default-path\n        this.__currentDefaultPath = \"\"\n        this.__currentPosition = {}\n\n        path = this.__createElement(\"path\", {}, true)\n        parent = this.__closestGroupOrSvg()\n        parent.appendChild(path)\n        this.__currentElement = path\n    };\n\n    /**\n     * Helper function to apply currentDefaultPath to current path element\n     * @private\n     */\n    __applyCurrentDefaultPath() {\n        var currentElement = this.__currentElement\n        if (currentElement.nodeName === \"path\") {\n            currentElement.setAttribute(\"d\", this.__currentDefaultPath)\n        } else {\n            console.error(\"Attempted to apply path command to node\", currentElement.nodeName)\n        }\n    };\n\n    /**\n     * Helper function to add path command\n     * @private\n     */\n    __addPathCommand(command) {\n        this.__currentDefaultPath += \" \"\n        this.__currentDefaultPath += command\n    };\n\n    /**\n     * Adds the move command to the current path element,\n     * if the currentPathElement is not empty create a new path element\n     */\n    moveTo(x, y) {\n        if (this.__currentElement.nodeName !== \"path\") {\n            this.beginPath()\n        }\n\n        // creates a new subpath with the given point\n        this.__currentPosition = {x: x, y: y}\n        this.__addPathCommand(format(\"M {x} {y}\", {x: x, y: y}))\n    };\n\n    /**\n     * Closes the current path\n     */\n    closePath() {\n        if (this.__currentDefaultPath) {\n            this.__addPathCommand(\"Z\")\n        }\n    };\n\n    /**\n     * Adds a line to command\n     */\n    lineTo(x, y) {\n        this.__currentPosition = {x: x, y: y}\n        if (this.__currentDefaultPath && this.__currentDefaultPath.indexOf('M') > -1) {\n            this.__addPathCommand(format(\"L {x} {y}\", {x: x, y: y}))\n        } else {\n            this.__addPathCommand(format(\"M {x} {y}\", {x: x, y: y}))\n        }\n    };\n\n    /**\n     * Add a bezier command\n     */\n    bezierCurveTo(cp1x, cp1y, cp2x, cp2y, x, y) {\n        this.__currentPosition = {x: x, y: y}\n        this.__addPathCommand(format(\"C {cp1x} {cp1y} {cp2x} {cp2y} {x} {y}\",\n            {cp1x: cp1x, cp1y: cp1y, cp2x: cp2x, cp2y: cp2y, x: x, y: y}))\n    };\n\n    /**\n     * Adds a quadratic curve to command\n     */\n    quadraticCurveTo(cpx, cpy, x, y) {\n        this.__currentPosition = {x: x, y: y}\n        this.__addPathCommand(format(\"Q {cpx} {cpy} {x} {y}\", {cpx: cpx, cpy: cpy, x: x, y: y}))\n    };\n\n    /**\n     * Adds the arcTo to the current path\n     *\n     * @see http://www.w3.org/TR/2015/WD-2dcontext-20150514/#dom-context-2d-arcto\n     */\n    arcTo(x1, y1, x2, y2, radius) {\n        // Let the point (x0, y0) be the last point in the subpath.\n        var x0 = this.__currentPosition && this.__currentPosition.x\n        var y0 = this.__currentPosition && this.__currentPosition.y\n\n        // First ensure there is a subpath for (x1, y1).\n        if (typeof x0 == \"undefined\" || typeof y0 == \"undefined\") {\n            return\n        }\n\n        // Negative values for radius must cause the implementation to throw an IndexSizeError exception.\n        if (radius < 0) {\n            throw new Error(\"IndexSizeError: The radius provided (\" + radius + \") is negative.\")\n        }\n\n        // If the point (x0, y0) is equal to the point (x1, y1),\n        // or if the point (x1, y1) is equal to the point (x2, y2),\n        // or if the radius radius is zero,\n        // then the method must add the point (x1, y1) to the subpath,\n        // and connect that point to the previous point (x0, y0) by a straight line.\n        if (((x0 === x1) && (y0 === y1))\n            || ((x1 === x2) && (y1 === y2))\n            || (radius === 0)) {\n            this.lineTo(x1, y1)\n            return\n        }\n\n        // Otherwise, if the points (x0, y0), (x1, y1), and (x2, y2) all lie on a single straight line,\n        // then the method must add the point (x1, y1) to the subpath,\n        // and connect that point to the previous point (x0, y0) by a straight line.\n        var unit_vec_p1_p0 = normalize([x0 - x1, y0 - y1])\n        var unit_vec_p1_p2 = normalize([x2 - x1, y2 - y1])\n        if (unit_vec_p1_p0[0] * unit_vec_p1_p2[1] === unit_vec_p1_p0[1] * unit_vec_p1_p2[0]) {\n            this.lineTo(x1, y1)\n            return\n        }\n\n        // Otherwise, let The Arc be the shortest arc given by circumference of the circle that has radius radius,\n        // and that has one point tangent to the half-infinite line that crosses the point (x0, y0) and ends at the point (x1, y1),\n        // and that has a different point tangent to the half-infinite line that ends at the point (x1, y1), and crosses the point (x2, y2).\n        // The points at which this circle touches these two lines are called the start and end tangent points respectively.\n\n        // note that both vectors are unit vectors, so the length is 1\n        var cos = (unit_vec_p1_p0[0] * unit_vec_p1_p2[0] + unit_vec_p1_p0[1] * unit_vec_p1_p2[1])\n        var theta = Math.acos(Math.abs(cos))\n\n        // Calculate origin\n        var unit_vec_p1_origin = normalize([\n            unit_vec_p1_p0[0] + unit_vec_p1_p2[0],\n            unit_vec_p1_p0[1] + unit_vec_p1_p2[1]\n        ])\n        var len_p1_origin = radius / Math.sin(theta / 2)\n        var x = x1 + len_p1_origin * unit_vec_p1_origin[0]\n        var y = y1 + len_p1_origin * unit_vec_p1_origin[1]\n\n        // Calculate start angle and end angle\n        // rotate 90deg clockwise (note that y axis points to its down)\n        var unit_vec_origin_start_tangent = [\n            -unit_vec_p1_p0[1],\n            unit_vec_p1_p0[0]\n        ]\n        // rotate 90deg counter clockwise (note that y axis points to its down)\n        var unit_vec_origin_end_tangent = [\n            unit_vec_p1_p2[1],\n            -unit_vec_p1_p2[0]\n        ]\n        var getAngle = function (vector) {\n            // get angle (clockwise) between vector and (1, 0)\n            var x = vector[0]\n            var y = vector[1]\n            if (y >= 0) { // note that y axis points to its down\n                return Math.acos(x)\n            } else {\n                return -Math.acos(x)\n            }\n        }\n        var startAngle = getAngle(unit_vec_origin_start_tangent)\n        var endAngle = getAngle(unit_vec_origin_end_tangent)\n\n        // Connect the point (x0, y0) to the start tangent point by a straight line\n        this.lineTo(x + unit_vec_origin_start_tangent[0] * radius,\n            y + unit_vec_origin_start_tangent[1] * radius)\n\n        // Connect the start tangent point to the end tangent point by arc\n        // and adding the end tangent point to the subpath.\n        this.arc(x, y, radius, startAngle, endAngle)\n    };\n\n    /**\n     * Sets the stroke property on the current element\n     */\n    stroke() {\n        if (this.__currentElement.nodeName === \"path\") {\n            this.__currentElement.setAttribute(\"paint-order\", \"fill stroke markers\")\n        }\n        this.__applyCurrentDefaultPath()\n        this.__applyStyleToCurrentElement(\"stroke\")\n    };\n\n    /**\n     * Sets fill properties on the current element\n     */\n    fill() {\n        if (this.__currentElement.nodeName === \"path\") {\n            this.__currentElement.setAttribute(\"paint-order\", \"stroke fill markers\")\n        }\n        this.__applyCurrentDefaultPath()\n        this.__applyStyleToCurrentElement(\"fill\")\n    };\n\n    /**\n     *  Adds a rectangle to the path.\n     */\n    rect(x, y, width, height) {\n        if (this.__currentElement.nodeName !== \"path\") {\n            this.beginPath()\n        }\n        this.moveTo(x, y)\n        this.lineTo(x + width, y)\n        this.lineTo(x + width, y + height)\n        this.lineTo(x, y + height)\n        this.lineTo(x, y)\n        this.closePath()\n    };\n\n\n    /**\n     * adds a rectangle element\n     */\n    fillRect(x, y, width, height) {\n\n        if (height < 0) {\n            y += height\n            height = -height\n        }\n        if (width < 0) {\n            x += width\n            width = -width\n        }\n        // See if rect intersects current viewbox\n        var r2 = {\n            x: x,\n            y: y,\n            width: width,\n            height: height\n        }\n\n        if (this.viewbox) {\n            if (!intersectRect(this.viewbox, r2)) {\n                return\n            }\n        }\n\n        var rect, parent\n        rect = this.__createElement(\"rect\", r2, true)\n        parent = this.__closestGroupOrSvg()\n        parent.appendChild(rect)\n        this.__currentElement = rect\n        this.__applyStyleToCurrentElement(\"fill\")\n    };\n\n    /**\n     * Draws a rectangle with no fill\n     * @param x\n     * @param y\n     * @param width\n     * @param height\n     */\n    strokeRect(x, y, width, height) {\n        var rect, parent\n        rect = this.__createElement(\"rect\", {\n            x: x,\n            y: y,\n            width: width,\n            height: height\n        }, true)\n        parent = this.__closestGroupOrSvg()\n        parent.appendChild(rect)\n        this.__currentElement = rect\n        this.__applyStyleToCurrentElement(\"stroke\")\n    };\n\n    // stroke ellipse\n    strokeEllipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW) {\n        this.__ellipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW, 'stroke')\n    }\n\n    // fill ellipse\n    fillEllipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW) {\n        this.__ellipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW, 'fill')\n    }\n\n    // ellipse helper\n    __ellipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW, style) {\n\n        const config =\n            {\n                cx,\n                cy,\n                rx,\n                ry\n            }\n        const element = this.__createElement('ellipse', config, true)\n        const parent = this.__closestGroupOrSvg()\n        parent.appendChild(element)\n        this.__currentElement = element\n        this.__applyStyleToCurrentElement(style)\n    }\n\n    /**\n     * Clear entire canvas:\n     * 1. save current transforms\n     * 2. remove all the childNodes of the root g element\n     */\n    __clearCanvas() {\n        var current = this.__closestGroupOrSvg(),\n            transform = current.getAttribute(\"transform\")\n        var rootGroup = this.__root.childNodes[1]\n        var childNodes = rootGroup.childNodes\n        for (var i = childNodes.length - 1; i >= 0; i--) {\n            if (childNodes[i]) {\n                rootGroup.removeChild(childNodes[i])\n            }\n        }\n        this.__currentElement = rootGroup\n        //reset __groupStack as all the child group nodes are all removed.\n        this.__groupStack = []\n        if (transform) {\n            this.__addTransform(transform)\n        }\n    };\n\n    /**\n     * \"Clears\" a canvas by just drawing a white rectangle in the current group.\n     */\n    clearRect(x, y, width, height) {\n        //clear entire canvas\n        if (x === 0 && y === 0 && width === this.width && height === this.height) {\n            this.__clearCanvas()\n            return\n        }\n        var rect, parent = this.__closestGroupOrSvg()\n        rect = this.__createElement(\"rect\", {\n            x: x,\n            y: y,\n            width: width,\n            height: height,\n            fill: \"#FFFFFF\"\n        }, true)\n        parent.appendChild(rect)\n    };\n\n    /**\n     * Adds a linear gradient to a defs tag.\n     * Returns a canvas gradient object that has a reference to it's parent def\n     */\n    createLinearGradient(x1, y1, x2, y2) {\n        var grad = this.__createElement(\"linearGradient\", {\n            id: randomString(this.__ids),\n            x1: x1 + \"px\",\n            x2: x2 + \"px\",\n            y1: y1 + \"px\",\n            y2: y2 + \"px\",\n            \"gradientUnits\": \"userSpaceOnUse\"\n        }, false)\n        this.__defs.appendChild(grad)\n        return new CanvasGradient(grad, this)\n    };\n\n    /**\n     * Adds a radial gradient to a defs tag.\n     * Returns a canvas gradient object that has a reference to it's parent def\n     */\n    createRadialGradient(x0, y0, r0, x1, y1, r1) {\n        var grad = this.__createElement(\"radialGradient\", {\n            id: randomString(this.__ids),\n            cx: x1 + \"px\",\n            cy: y1 + \"px\",\n            r: r1 + \"px\",\n            fx: x0 + \"px\",\n            fy: y0 + \"px\",\n            \"gradientUnits\": \"userSpaceOnUse\"\n        }, false)\n        this.__defs.appendChild(grad)\n        return new CanvasGradient(grad, this)\n\n    };\n\n    /**\n     * Parses the font string and returns svg mapping\n     * @private\n     */\n    __parseFont() {\n        var regex = /^\\s*(?=(?:(?:[-a-z]+\\s*){0,2}(italic|oblique))?)(?=(?:(?:[-a-z]+\\s*){0,2}(small-caps))?)(?=(?:(?:[-a-z]+\\s*){0,2}(bold(?:er)?|lighter|[1-9]00))?)(?:(?:normal|\\1|\\2|\\3)\\s*){0,3}((?:xx?-)?(?:small|large)|medium|smaller|larger|[.\\d]+(?:\\%|in|[cem]m|ex|p[ctx]))(?:\\s*\\/\\s*(normal|[.\\d]+(?:\\%|in|[cem]m|ex|p[ctx])))?\\s*([-,\\'\\\"\\sa-z0-9]+?)\\s*$/i\n        var fontPart = regex.exec(this.font)\n        var data = {\n            style: fontPart[1] || 'normal',\n            size: fontPart[4] || '10px',\n            family: fontPart[6] || 'sans-serif',\n            weight: fontPart[3] || 'normal',\n            decoration: fontPart[2] || 'normal',\n            href: null\n        }\n\n        //canvas doesn't support underline natively, but we can pass this attribute\n        if (this.__fontUnderline === \"underline\") {\n            data.decoration = \"underline\"\n        }\n\n        //canvas also doesn't support linking, but we can pass this as well\n        if (this.__fontHref) {\n            data.href = this.__fontHref\n        }\n\n        return data\n    };\n\n    /**\n     * Helper to link text fragments\n     * @param font\n     * @param element\n     * @return {*}\n     * @private\n     */\n    __wrapTextLink(font, element) {\n        if (font.href) {\n            var a = this.__createElement(\"a\")\n            a.setAttributeNS(\"http://www.w3.org/1999/xlink\", \"xlink:href\", font.href)\n            a.appendChild(element)\n            return a\n        }\n        return element\n    };\n\n    /**\n     * Fills or strokes text\n     * @param text\n     * @param x\n     * @param y\n     * @param action - stroke or fill\n     * @private\n     */\n    __applyText(text, x, y, action) {\n        var font = this.__parseFont(),\n            parent = this.__closestGroupOrSvg(),\n            textElement = this.__createElement(\"text\", {\n                \"font-family\": font.family,\n                \"font-size\": font.size,\n                \"font-style\": font.style,\n                \"font-weight\": font.weight,\n                \"text-decoration\": font.decoration,\n                \"x\": x,\n                \"y\": y,\n                \"text-anchor\": getTextAnchor(this.textAlign),\n                \"dominant-baseline\": getDominantBaseline(this.textBaseline)\n            }, true)\n\n        textElement.appendChild(this.__document.createTextNode(text))\n        this.__currentElement = textElement\n        this.__applyStyleToCurrentElement(action)\n        parent.appendChild(this.__wrapTextLink(font, textElement))\n    };\n\n    /**\n     * Creates a text element\n     * @param text\n     * @param x\n     * @param y\n     */\n    fillText(text, x, y) {\n        this.__applyText(text, x, y, \"fill\")\n    };\n\n    /**\n     * Strokes text\n     * @param text\n     * @param x\n     * @param y\n     */\n    strokeText(text, x, y) {\n        this.__applyText(text, x, y, \"stroke\")\n    };\n\n    /**\n     * No need to implement this for svg.\n     * @param text\n     * @return {TextMetrics}\n     */\n    measureText(text) {\n        this.__ctx.font = this.font\n        return this.__ctx.measureText(text)\n    };\n\n    /**\n     *  Arc command!\n     */\n    arc(x, y, radius, startAngle, endAngle, counterClockwise) {\n        // in canvas no circle is drawn if no angle is provided.\n        if (startAngle === endAngle) {\n            return\n        }\n        startAngle = startAngle % (2 * Math.PI)\n        endAngle = endAngle % (2 * Math.PI)\n        if (startAngle === endAngle) {\n            //circle time! subtract some of the angle so svg is happy (svg elliptical arc can't draw a full circle)\n            endAngle = ((endAngle + (2 * Math.PI)) - 0.001 * (counterClockwise ? -1 : 1)) % (2 * Math.PI)\n        }\n        var endX = x + radius * Math.cos(endAngle),\n            endY = y + radius * Math.sin(endAngle),\n            startX = x + radius * Math.cos(startAngle),\n            startY = y + radius * Math.sin(startAngle),\n            sweepFlag = counterClockwise ? 0 : 1,\n            largeArcFlag = 0,\n            diff = endAngle - startAngle\n\n        // https://github.com/gliffy/canvas2svg/issues/4\n        if (diff < 0) {\n            diff += 2 * Math.PI\n        }\n\n        if (counterClockwise) {\n            largeArcFlag = diff > Math.PI ? 0 : 1\n        } else {\n            largeArcFlag = diff > Math.PI ? 1 : 0\n        }\n\n        this.lineTo(startX, startY)\n        this.__addPathCommand(format(\"A {rx} {ry} {xAxisRotation} {largeArcFlag} {sweepFlag} {endX} {endY}\",\n            {\n                rx: radius,\n                ry: radius,\n                xAxisRotation: 0,\n                largeArcFlag: largeArcFlag,\n                sweepFlag: sweepFlag,\n                endX: endX,\n                endY: endY\n            }))\n\n        this.__currentPosition = {x: endX, y: endY}\n    };\n\n    /**\n     * The ellipse() method creates an elliptical arc centered at (x, y) with the radii radiusX and radiusY. The path\n     * starts at startAngle and ends at endAngle, and travels in the direction given by counterclockwise (defaulting to clockwise).\n     */\n// ellipse (x, y, radiusX, radiusY, rotation, startAngle, endAngle, counterclockwise) {\n//     // TODO -- implement\n// }\n\n    /**\n     * Generates a ClipPath from the clip command.\n     */\n    clip() {\n        var group = this.__closestGroupOrSvg(),\n            clipPath = this.__createElement(\"clipPath\"),\n            id = randomString(this.__ids),\n            newGroup = this.__createElement(\"g\")\n\n        this.__applyCurrentDefaultPath()\n        group.removeChild(this.__currentElement)\n        clipPath.setAttribute(\"id\", id)\n        clipPath.appendChild(this.__currentElement)\n\n        this.__defs.appendChild(clipPath)\n\n        //set the clip path to this group\n        group.setAttribute(\"clip-path\", format(\"url(#{id})\", {id: id}))\n\n        //clip paths can be scaled and transformed, we need to add another wrapper group to avoid later transformations\n        // to this path\n        group.appendChild(newGroup)\n\n        this.__currentElement = newGroup\n\n    };\n\n    /**\n     * Draws a canvas, image or mock context to this canvas.\n     * Note that all svg dom manipulation uses node.childNodes rather than node.children for IE support.\n     * http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#dom-context-2d-drawimage\n     */\n    drawImage() {\n        //convert arguments to a real array\n        var args = Array.prototype.slice.call(arguments),\n            image = args[0],\n            dx, dy, dw, dh, sx = 0, sy = 0, sw, sh, parent, svg, defs, group,\n            currentElement, svgImage, canvas, context, id\n\n        if (args.length === 3) {\n            dx = args[1]\n            dy = args[2]\n            sw = image.width\n            sh = image.height\n            dw = sw\n            dh = sh\n        } else if (args.length === 5) {\n            dx = args[1]\n            dy = args[2]\n            dw = args[3]\n            dh = args[4]\n            sw = image.width\n            sh = image.height\n        } else if (args.length === 9) {\n            sx = args[1]\n            sy = args[2]\n            sw = args[3]\n            sh = args[4]\n            dx = args[5]\n            dy = args[6]\n            dw = args[7]\n            dh = args[8]\n        } else {\n            throw new Error(\"Invalid number of arguments passed to drawImage: \" + arguments.length)\n        }\n\n        parent = this.__closestGroupOrSvg()\n        currentElement = this.__currentElement\n        var translateDirective = \"translate(\" + dx + \", \" + dy + \")\"\n        if (image instanceof ctx) {\n            //canvas2svg mock canvas context. In the future we may want to clone nodes instead.\n            //also I'm currently ignoring dw, dh, sw, sh, sx, sy for a mock context.\n            svg = image.getSvg().cloneNode(true)\n            if (svg.childNodes && svg.childNodes.length > 1) {\n                defs = svg.childNodes[0]\n                while (defs.childNodes.length) {\n                    id = defs.childNodes[0].getAttribute(\"id\")\n                    this.__ids[id] = id\n                    this.__defs.appendChild(defs.childNodes[0])\n                }\n                group = svg.childNodes[1]\n                if (group) {\n                    //save original transform\n                    var originTransform = group.getAttribute(\"transform\")\n                    var transformDirective\n                    if (originTransform) {\n                        transformDirective = originTransform + \" \" + translateDirective\n                    } else {\n                        transformDirective = translateDirective\n                    }\n                    group.setAttribute(\"transform\", transformDirective)\n                    parent.appendChild(group)\n                }\n            }\n        } else if (image.nodeName === \"CANVAS\" || image.nodeName === \"IMG\") {\n            //canvas or image\n            svgImage = this.__createElement(\"image\")\n            svgImage.setAttribute(\"width\", dw)\n            svgImage.setAttribute(\"height\", dh)\n            svgImage.setAttribute(\"preserveAspectRatio\", \"none\")\n\n            if (sx || sy || sw !== image.width || sh !== image.height) {\n                //crop the image using a temporary canvas\n                canvas = this.__document.createElement(\"canvas\")\n                canvas.width = dw\n                canvas.height = dh\n                context = canvas.getContext(\"2d\")\n                context.drawImage(image, sx, sy, sw, sh, 0, 0, dw, dh)\n                image = canvas\n            }\n            svgImage.setAttribute(\"transform\", translateDirective)\n            svgImage.setAttributeNS(\"http://www.w3.org/1999/xlink\", \"xlink:href\",\n                image.nodeName === \"CANVAS\" ? image.toDataURL() : image.getAttribute(\"src\"))\n            parent.appendChild(svgImage)\n        }\n    };\n\n    /**\n     * Generates a pattern tag\n     */\n    createPattern(image, repetition) {\n\n        let pattern = this.__document.__createElement(\"pattern\")\n        let id = randomString(this.__ids)\n        let img\n\n        pattern.setAttribute(\"id\", id)\n        pattern.setAttribute(\"width\", image.width)\n        pattern.setAttribute(\"height\", image.height)\n        if (image.nodeName === \"CANVAS\" || image.nodeName === \"IMG\") {\n            img = this.__createElement(\"image\")\n            img.setAttribute(\"width\", image.width)\n            img.setAttribute(\"height\", image.height)\n            img.setAttributeNS(\"http://www.w3.org/1999/xlink\", \"xlink:href\",\n                image.nodeName === \"CANVAS\" ? image.toDataURL() : image.getAttribute(\"src\"))\n            pattern.appendChild(img)\n            this.__defs.appendChild(pattern)\n        } else if (image instanceof ctx) {\n            pattern.appendChild(image.__root.childNodes[1])\n            this.__defs.appendChild(pattern)\n        }\n        return new CanvasPattern(pattern, this)\n    };\n\n    setLineDash(dashArray) {\n        if (dashArray && dashArray.length > 0) {\n            this.lineDash = dashArray.join(\",\")\n        } else {\n            this.lineDash = null\n        }\n    };\n\n    /**\n     * Not yet implemented\n     */\n    drawFocusRing() {\n    };\n\n    createImageData() {\n    };\n\n    getImageData() {\n    };\n\n    putImageData() {\n    };\n\n    globalCompositeOperation() {\n    };\n\n    setTransform() {\n    };\n}\n\nexport default ctx\n","const Cytoband = function (start, end, name, typestain) {\n    this.start = start\n    this.end = end\n    this.name = name\n    this.stain = 0\n\n    // Set the type, either p, n, or c\n    if (typestain === 'acen') {\n        this.type = 'c'\n    } else {\n        this.type = typestain.charAt(1)\n        if (this.type === 'p') {\n            this.stain = parseInt(typestain.substring(4))\n        }\n    }\n}\n\nexport default Cytoband\n","const _version = \"2.15.11\"\nfunction version() {\n    return _version\n}\nexport default version\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {loadFasta} from \"./fasta.js\"\nimport Cytoband from \"./cytoband.js\"\nimport {buildOptions, isDataURL} from \"../util/igvUtils.js\"\nimport {BGZip, igvxhr, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport version from \"../version.js\"\n\nconst DEFAULT_GENOMES_URL = \"https://igv.org/genomes/genomes.json\"\nconst BACKUP_GENOMES_URL = \"https://s3.amazonaws.com/igv.org.genomes/genomes.json\"\n\nconst splitLines = StringUtils.splitLines\n\nconst GenomeUtils = {\n\n    loadGenome: async function (options) {\n\n        const cytobandUrl = options.cytobandURL\n        const aliasURL = options.aliasURL\n        const sequence = await loadFasta(options)\n\n        let aliases\n        if (aliasURL) {\n            aliases = await loadAliases(aliasURL, sequence.config)\n        }\n\n        const genome = new Genome(options, sequence, aliases)\n\n        // Delay loading cytbands untils after genome initialization to use chromosome aliases (1 vs chr1, etc).\n        if (cytobandUrl) {\n            genome.cytobands = await loadCytobands(cytobandUrl, sequence.config, genome)\n        }\n\n        return genome\n    },\n\n    initializeGenomes: async function (config) {\n\n        if (!GenomeUtils.KNOWN_GENOMES) {\n\n            const table = {}\n\n            // Get default genomes\n            if (config.loadDefaultGenomes !== false) {\n                try {\n                    const url = DEFAULT_GENOMES_URL + `?randomSeed=${Math.random().toString(36)}&version=${version()}`  // prevent caching\n                    const jsonArray = await igvxhr.loadJson(url, {timeout: 5000})\n                    processJson(jsonArray)\n                } catch (e) {\n                    console.error(e)\n                    try {\n                        const url = BACKUP_GENOMES_URL + `?randomSeed=${Math.random().toString(36)}&version=${version()}`  // prevent caching\n                        const jsonArray = await igvxhr.loadJson(url, {})\n                        processJson(jsonArray)\n                    } catch (e) {\n                        console.error(e)\n                        console.warn(\"Errors loading default genome definitions.\")\n                    }\n                }\n            }\n\n            // Add user-defined genomes\n            const genomeList = config.genomeList || config.genomes\n            if (genomeList) {\n                if (typeof genomeList === 'string') {\n                    const jsonArray = await igvxhr.loadJson(genomeList, {})\n                    processJson(jsonArray)\n                } else {\n                    processJson(genomeList)\n                }\n            }\n\n            GenomeUtils.KNOWN_GENOMES = table\n\n            function processJson(jsonArray) {\n                jsonArray.forEach(function (json) {\n                    table[json.id] = json\n                })\n                return table\n            }\n        }\n    },\n\n    isWholeGenomeView: function (chr) {\n        return 'all' === chr.toLowerCase()\n    },\n\n    // Expand a genome id to a reference object, if needed\n    expandReference: function (alert, idOrConfig) {\n\n        // idOrConfig might be json\n        if (StringUtils.isString(idOrConfig) && idOrConfig.startsWith(\"{\")) {\n            try {\n                idOrConfig = JSON.parse(idOrConfig)\n            } catch (e) {\n                // Apparently its not json,  could be an ID starting with \"{\".  Unusual but legal.\n            }\n        }\n\n        let genomeID\n        if (StringUtils.isString(idOrConfig)) {\n            genomeID = idOrConfig\n        } else if (idOrConfig.genome) {\n            genomeID = idOrConfig.genome\n        } else if (idOrConfig.id !== undefined && idOrConfig.fastaURL === undefined) {\n            // Backward compatibility\n            genomeID = idOrConfig.id\n        }\n\n        if (genomeID) {\n            const knownGenomes = GenomeUtils.KNOWN_GENOMES\n            const reference = knownGenomes[genomeID]\n            if (!reference) {\n                alert.present(new Error(`Unknown genome id: ${genomeID}`), undefined)\n            }\n            return reference\n        } else {\n            return idOrConfig\n        }\n    }\n}\n\n\nclass Genome {\n\n    constructor(config, sequence, aliases) {\n\n        this.config = config\n        this.id = config.id || generateGenomeID(config)\n        this.sequence = sequence\n        this.chromosomeNames = sequence.chromosomeNames\n        this.chromosomes = sequence.chromosomes  // An object (functions as a dictionary)\n        this.featureDB = new Map()   // Hash of name -> feature, used for search function.\n\n        this.wholeGenomeView = config.wholeGenomeView === undefined || config.wholeGenomeView\n        if (this.wholeGenomeView && Object.keys(sequence.chromosomes).length > 1) {\n            constructWG(this, config)\n        } else {\n            this.wgChromosomeNames = sequence.chromosomeNames\n        }\n\n        /**\n         * Return the official chromosome name for the (possibly) alias.  Deals with\n         * 1 <-> chr1,  chrM <-> MT,  IV <-> chr4, etc.\n         * @param str\n         */\n        var chrAliasTable = {},\n            self = this\n\n\n        // The standard mappings\n        chrAliasTable[\"all\"] = \"all\"\n        this.chromosomeNames.forEach(function (name) {\n            var alias = name.startsWith(\"chr\") ? name.substring(3) : \"chr\" + name\n            chrAliasTable[alias.toLowerCase()] = name\n            if (name === \"chrM\") chrAliasTable[\"mt\"] = \"chrM\"\n            if (name === \"MT\") chrAliasTable[\"chrm\"] = \"MT\"\n            chrAliasTable[name.toLowerCase()] = name\n        })\n\n        // Custom mappings\n        if (aliases) {\n            aliases.forEach(function (array) {\n                // Find the official chr name\n                var defName, i\n\n                for (i = 0; i < array.length; i++) {\n                    if (self.chromosomes[array[i]]) {\n                        defName = array[i]\n                        break\n                    }\n                }\n\n                if (defName) {\n                    array.forEach(function (alias) {\n                        if (alias !== defName) {\n                            chrAliasTable[alias.toLowerCase()] = defName\n                            chrAliasTable[alias] = defName      // Should not be needed\n                        }\n                    })\n                }\n\n            })\n        }\n\n        this.chrAliasTable = chrAliasTable\n\n    }\n\n    showWholeGenomeView() {\n        return this.config.wholeGenomeView !== false\n    }\n\n    toJSON() {\n        return Object.assign({}, this.config, {tracks: undefined})\n    }\n\n    getInitialLocus() {\n\n    }\n\n    getHomeChromosomeName() {\n        if (this.showWholeGenomeView() && this.chromosomes.hasOwnProperty(\"all\")) {\n            return \"all\"\n        } else {\n            return this.chromosomeNames[0]\n\n        }\n    }\n\n    getChromosomeName(str) {\n        const chr = str ? this.chrAliasTable[str.toLowerCase()] : str\n        return chr ? chr : str\n    }\n\n    getChromosome(chr) {\n        chr = this.getChromosomeName(chr)\n        return this.chromosomes[chr]\n    }\n\n    getCytobands(chr) {\n        return this.cytobands ? this.cytobands[chr] : null\n    }\n\n    getLongestChromosome() {\n\n        var longestChr,\n            chromosomes = this.chromosomes\n        for (let key in chromosomes) {\n            if (chromosomes.hasOwnProperty(key)) {\n                var chr = chromosomes[key]\n                if (longestChr === undefined || chr.bpLength > longestChr.bpLength) {\n                    longestChr = chr\n                }\n            }\n            return longestChr\n        }\n    }\n\n    getChromosomes() {\n        return this.chromosomes\n    }\n\n    /**\n     * Return the genome coordinate in kb for the give chromosome and position.\n     * NOTE: This might return undefined if the chr is filtered from whole genome view.\n     */\n    getGenomeCoordinate(chr, bp) {\n\n        var offset = this.getCumulativeOffset(chr)\n        if (offset === undefined) return undefined\n\n        return offset + bp\n    }\n\n    /**\n     * Return the chromosome and coordinate in bp for the given genome coordinate\n     */\n    getChromosomeCoordinate(genomeCoordinate) {\n\n        if (this.cumulativeOffsets === undefined) {\n            this.cumulativeOffsets = computeCumulativeOffsets.call(this)\n        }\n\n        let lastChr = undefined\n        let lastCoord = 0\n        for (let name of this.wgChromosomeNames) {\n\n            const cumulativeOffset = this.cumulativeOffsets[name]\n            if (cumulativeOffset > genomeCoordinate) {\n                const position = genomeCoordinate - lastCoord\n                return {chr: lastChr, position: position}\n            }\n            lastChr = name\n            lastCoord = cumulativeOffset\n        }\n\n        // If we get here off the end\n        return {chr: this.wgChromosomeNames[this.wgChromosomeNames.length - 1], position: 0}\n\n    };\n\n\n    /**\n     * Return the offset in genome coordinates (kb) of the start of the given chromosome\n     * NOTE:  This might return undefined if the chromosome is filtered from whole genome view.\n     */\n    getCumulativeOffset(chr) {\n\n        if (this.cumulativeOffsets === undefined) {\n            this.cumulativeOffsets = computeCumulativeOffsets.call(this)\n        }\n\n        const queryChr = this.getChromosomeName(chr)\n        return this.cumulativeOffsets[queryChr]\n\n        function computeCumulativeOffsets() {\n\n            let self = this\n            let acc = {}\n            let offset = 0\n            for (let name of self.wgChromosomeNames) {\n\n                acc[name] = Math.floor(offset)\n\n                const chromosome = self.getChromosome(name)\n\n                offset += chromosome.bpLength\n            }\n\n            return acc\n        }\n    }\n\n    /**\n     * Return the nominal genome length, this is the length of the main chromosomes (no scaffolds, etc).\n     */\n    getGenomeLength() {\n\n        let self = this\n\n        if (!this.bpLength) {\n            let bpLength = 0\n            self.wgChromosomeNames.forEach(function (cname) {\n                let c = self.chromosomes[cname]\n                bpLength += c.bpLength\n            })\n            this.bpLength = bpLength\n        }\n        return this.bpLength\n    }\n\n    async getSequence(chr, start, end) {\n        chr = this.getChromosomeName(chr)\n        return this.sequence.getSequence(chr, start, end)\n    }\n\n    addFeaturesToDB(featureList, config) {\n\n        const insertFeature = (name, feature) => {\n            const current = this.featureDB.get(name)\n            if (current) {\n                feature = (feature.end - feature.start) > (current.end - current.start) ? feature : current\n\n            }\n            this.featureDB.set(name, feature)\n        }\n\n        for (let feature of featureList) {\n            if (feature.name) {\n                insertFeature(feature.name.toUpperCase(), feature)\n            }\n            if (feature.gene && feature.gene.name) {\n                insertFeature(feature.gene.name.toUpperCase(), feature)\n            }\n\n            if (config.searchableFields) {\n                for (let f of config.searchableFields) {\n                    const value = feature.getAttributeValue(f)\n                    if (value) {\n                        if (value.indexOf(\" \") > 0) {\n                            insertFeature(value.replaceAll(\" \", \"+\").toUpperCase(), feature)\n                        } else {\n                            insertFeature(value.toUpperCase(), feature)\n                        }\n                    }\n                }\n            }\n        }\n    }\n}\n\nasync function loadCytobands(cytobandUrl, config, genome) {\n\n    let data\n    if (isDataURL(cytobandUrl)) {\n        const plain = BGZip.decodeDataURI(cytobandUrl)\n        data = \"\"\n        const len = plain.length\n        for (let i = 0; i < len; i++) {\n            data += String.fromCharCode(plain[i])\n        }\n    } else {\n        data = await igvxhr.loadString(cytobandUrl, buildOptions(config))\n    }\n\n    // var bands = [],\n    //     lastChr,\n    //     n = 0,\n    //     c = 1,\n    //\n    //     len = lines.length,\n    const cytobands = {}\n    let lastChr\n    let bands = []\n    const lines = splitLines(data)\n    for (let line of lines) {\n        var tokens = line.split(\"\\t\")\n        var chr = genome.getChromosomeName(tokens[0])\n        if (!lastChr) lastChr = chr\n\n        if (chr !== lastChr) {\n            cytobands[lastChr] = bands\n            bands = []\n            lastChr = chr\n        }\n\n        if (tokens.length === 5) {\n            //10\t0\t3000000\tp15.3\tgneg\n            var start = parseInt(tokens[1])\n            var end = parseInt(tokens[2])\n            var name = tokens[3]\n            var stain = tokens[4]\n            bands.push(new Cytoband(start, end, name, stain))\n        }\n    }\n\n    return cytobands\n}\n\nfunction loadAliases(aliasURL, config) {\n\n    return igvxhr.loadString(aliasURL, buildOptions(config))\n\n        .then(function (data) {\n\n            var lines = splitLines(data),\n                aliases = []\n\n            lines.forEach(function (line) {\n                if (!line.startsWith(\"#\") && line.length > 0) aliases.push(line.split(\"\\t\"))\n            })\n\n            return aliases\n        })\n\n}\n\nfunction constructWG(genome, config) {\n\n    let wgChromosomes\n    if (config.chromosomeOrder) {\n        if (Array.isArray(config.chromosomeOrder)) {\n            genome.wgChromosomeNames = config.chromosomeOrder\n        } else {\n            genome.wgChromosomeNames = config.chromosomeOrder.split(',').map(nm => nm.trim())\n        }\n        wgChromosomes = genome.wgChromosomeNames.map(nm => genome.chromosomes[nm]).filter(chr => chr !== undefined)\n\n    } else {\n\n        // Trim small chromosomes.\n        const lengths = Object.keys(genome.chromosomes).map(key => genome.chromosomes[key].bpLength)\n        const median = lengths.reduce((a, b) => Math.max(a, b))\n        const threshold = median / 50\n        wgChromosomes = Object.values(genome.chromosomes).filter(chr => chr.bpLength > threshold)\n\n        // Sort chromosomes.  First segregate numeric and alpha names, sort numeric, leave alpha as is\n        const numericChromosomes = wgChromosomes.filter(chr => isDigit(chr.name.replace('chr', '')))\n        const alphaChromosomes = wgChromosomes.filter(chr => !isDigit(chr.name.replace('chr', '')))\n        numericChromosomes.sort((a, b) => Number.parseInt(a.name.replace('chr', '')) - Number.parseInt(b.name.replace('chr', '')))\n\n        const wgChromosomeNames = numericChromosomes.map(chr => chr.name)\n        for (let chr of alphaChromosomes) {\n            wgChromosomeNames.push(chr.name)\n        }\n        genome.wgChromosomeNames = wgChromosomeNames\n    }\n\n\n    // Compute psuedo-chromosome \"all\"\n    const l = wgChromosomes.reduce((accumulator, currentValue) => accumulator += currentValue.bpLength, 0)\n    genome.chromosomes[\"all\"] = {\n        name: \"all\",\n        bpLength: l\n    }\n\n    function isDigit(val) {\n        return /^\\d+$/.test(val)\n    }\n\n}\n\nfunction generateGenomeID(config) {\n    if (config.id !== undefined) {\n        return config.id\n    } else if (config.fastaURL && StringUtils.isString(config.fastaURL)) {\n        return config.fastaURL\n    } else if (config.fastaURL && config.fastaURL.name) {\n        return config.fastaURL.name\n    } else {\n        return (\"0000\" + (Math.random() * Math.pow(36, 4) << 0).toString(36)).slice(-4)\n    }\n}\n\nexport default GenomeUtils\n","/**\n * Created by dat on 9/16/16.\n */\n\nimport $ from \"./vendor/jquery-3.3.1.slim.js\"\nimport {Popover} from '../node_modules/igv-ui/dist/igv-ui.js'\nimport Viewport from \"./viewport.js\"\nimport {FileUtils} from \"../node_modules/igv-utils/src/index.js\"\nimport {DOMUtils} from \"../node_modules/igv-ui/dist/igv-ui.js\"\nimport C2S from \"./canvas2svg.js\"\nimport GenomeUtils from \"./genome/genome.js\"\nimport {bppFeatureFetchThreshold} from \"./sequenceTrack.js\"\n\nconst NOT_LOADED_MESSAGE = 'Error loading track data'\n\nlet mouseDownCoords\nlet lastClickTime = 0\nlet lastHoverUpdateTime = 0\nlet popupTimerID\n\nclass TrackViewport extends Viewport {\n\n    constructor(trackView, viewportColumn, referenceFrame, width) {\n        super(trackView, viewportColumn, referenceFrame, width)\n    }\n\n    initializationHelper() {\n\n        this.$spinner = $('<div>', {class: 'igv-loading-spinner-container'})\n        this.$viewport.append(this.$spinner)\n        this.$spinner.append($('<div>'))\n\n        const track = this.trackView.track\n        if ('sequence' !== track.type) {\n            this.$zoomInNotice = this.createZoomInNotice(this.$viewport)\n        }\n\n        if (track.name && \"sequence\" !== track.id) {\n            this.$trackLabel = $('<div class=\"igv-track-label\">')\n            this.$viewport.append(this.$trackLabel)\n            this.setTrackLabel(track.name)\n            if (false === this.browser.trackLabelsVisible) {\n                this.$trackLabel.hide()\n            }\n        }\n\n        this.stopSpinner()\n        this.addMouseHandlers()\n    }\n\n    setContentHeight(contentHeight) {\n        super.setContentHeight(contentHeight)\n        if (this.featureCache) this.featureCache.redraw = true\n    }\n\n    setTrackLabel(label) {\n\n        this.$trackLabel.empty()\n        this.$trackLabel.html(label)\n\n        const txt = this.$trackLabel.text()\n        this.$trackLabel.attr('title', txt)\n    }\n\n    startSpinner() {\n        this.$spinner.show()\n    }\n\n    stopSpinner() {\n        if (this.$spinner) {\n            this.$spinner.hide()\n        }\n    }\n\n    /**\n     * Test to determine if we are zoomed in far enough to see features. Applicable to tracks with visibility windows.\n     *\n     * As a side effect the viewports canvas is removed if zoomed out.\n     *\n     * @returns {boolean} true if we are zoomed in past visibility window, false otherwise\n     */\n    checkZoomIn() {\n\n        const zoomedOutOfWindow = () => {\n            if (this.referenceFrame.chr.toLowerCase() === \"all\" && !this.trackView.track.supportsWholeGenome) {\n                return true\n            } else {\n                const visibilityWindow = this.trackView.track.visibilityWindow\n                return (\n                    visibilityWindow !== undefined && visibilityWindow > 0 &&\n                    (this.referenceFrame.bpPerPixel * this.$viewport.width() > visibilityWindow))\n            }\n        }\n\n        if (this.trackView.track && \"sequence\" === this.trackView.track.type && this.referenceFrame.bpPerPixel > bppFeatureFetchThreshold) {\n            $(this.canvas).remove()\n            this.canvas = undefined\n            //this.featureCache = undefined\n            return false\n        }\n\n        if (!(this.viewIsReady())) {\n            return false\n        }\n\n\n        if (zoomedOutOfWindow()) {\n\n            // Out of visibility window\n            if (this.canvas) {\n                $(this.canvas).remove()\n                this.canvas = undefined\n                //this.featureCache = undefined\n            }\n            if (this.trackView.track.autoHeight) {\n                const minHeight = this.trackView.minHeight || 0\n                this.setContentHeight(minHeight)\n            }\n            if (this.$zoomInNotice) {\n                this.$zoomInNotice.show()\n            }\n            return false\n        } else {\n            if (this.$zoomInNotice) {\n                this.$zoomInNotice.hide()\n            }\n            return true\n        }\n\n    }\n\n    /**\n     * Adjust the canvas to the current genomic state.\n     */\n    shift() {\n        const referenceFrame = this.referenceFrame\n        if (this.canvas &&\n            this.canvas._data &&\n            this.canvas._data.referenceFrame.chr === this.referenceFrame.chr &&\n            this.canvas._data.bpPerPixel === referenceFrame.bpPerPixel) {\n            const pixelOffset = Math.round((this.canvas._data.bpStart - referenceFrame.start) / referenceFrame.bpPerPixel)\n            this.canvas.style.left = pixelOffset + \"px\"\n        }\n    }\n\n    /**\n     * Set the content top of the current view.  This is triggered by scrolling.   If the current canvas extent is not\n     * sufficient to cover the new vertical range repaint.\n     *\n     * @param contentTop - the \"top\" property of the virtual content div, 0 unless track is scrolled vertically\n     *\n     *\n     */\n    setTop(contentTop) {\n\n        super.setTop(contentTop)\n\n        if (!this.canvas) {\n            this.repaint()\n        } else {\n            // See if currently painted canvas covers the vertical range of the viewport.  If not repaint\n            const h = this.$viewport.height()\n            const vt = contentTop + this.canvas._data.pixelTop\n            const vb = vt + this.canvas._data.pixelHeight\n            if (vt > 0 || vb < h) {\n                this.repaint()\n            }\n        }\n\n        // Now offset backing canvas to align with the contentTop visual offset.\n        let offset = contentTop + this.canvas._data.pixelTop\n        this.canvas.style.top = `${offset}px`\n    }\n\n    async loadFeatures() {\n\n        const referenceFrame = this.referenceFrame\n        const chr = referenceFrame.chr\n\n        // Expand the requested range so we can pan a bit without reloading.  But not beyond chromosome bounds\n        const chrLength = this.browser.genome.getChromosome(chr).bpLength\n        const pixelWidth = this.$viewport.width()// * 3;\n        const bpWidth = pixelWidth * referenceFrame.bpPerPixel\n        const bpStart = Math.floor(Math.max(0, referenceFrame.start - bpWidth))\n        const bpEnd = Math.ceil(Math.min(chrLength, referenceFrame.start + bpWidth + bpWidth))  // Add one screen width to end\n\n        if (this.loading && this.loading.start === bpStart && this.loading.end === bpEnd) {\n            return undefined\n        }\n        this.loading = {start: bpStart, end: bpEnd}\n        this.startSpinner()\n\n        try {\n            const track = this.trackView.track\n            const features = await this.getFeatures(track, chr, bpStart, bpEnd, referenceFrame.bpPerPixel)\n            if (features) {\n                let roiFeatures = []\n                if (track.roiSets && track.roiSets.length > 0) {\n                    for (let roiSet of track.roiSets) {\n                        const features = await roiSet.getFeatures(chr, bpStart, bpEnd, referenceFrame.bpPerPixel)\n                        roiFeatures.push({track: roiSet, features})\n                    }\n                }\n\n                const mr = track && (\"wig\" === track.type || \"merged\" === track.type)   // wig tracks are potentially multiresolution (e.g. bigwig)\n                this.featureCache = new FeatureCache(chr, bpStart, bpEnd, referenceFrame.bpPerPixel, features, roiFeatures, mr)\n                this.loading = false\n                this.hideMessage()\n                this.stopSpinner()\n                return this.featureCache\n            }\n        } catch (error) {\n            // Track might have been removed during load\n            if (this.trackView && this.trackView.disposed !== true) {\n                this.showMessage(NOT_LOADED_MESSAGE)\n                this.browser.alert.present(error)\n                console.error(error)\n            }\n        } finally {\n            this.loading = false\n            this.stopSpinner()\n        }\n    }\n\n    /**\n     * Compute the genomic extent and needed pixelWidth to repaint the canvas for the current genomic state.\n     * Normally the canvas is size 3X the width of the viewport, however there is no left-right panning for WGV so\n     * canvas width is viewport width.\n     * @returns {{bpEnd: *, pixelWidth: (*|number), bpStart: number}}\n     */\n    repaintDimensions() {\n        const isWGV = GenomeUtils.isWholeGenomeView(this.referenceFrame.chr)\n        const pixelWidth = isWGV ? this.$viewport.width() : 3 * this.$viewport.width()\n        const bpPerPixel = this.referenceFrame.bpPerPixel\n        const bpStart = this.referenceFrame.start - (isWGV ? 0 : pixelWidth / 3 * bpPerPixel)\n        const bpEnd = this.referenceFrame.end + (isWGV ? 0 : pixelWidth / 3 * bpPerPixel)\n        return {\n            bpStart, bpEnd, pixelWidth\n        }\n    }\n\n    /**\n     * Repaint the canvas using the cached features\n     *\n     */\n    repaint() {\n\n        if (undefined === this.featureCache) {\n            return\n        }\n\n        const {features, roiFeatures} = this.featureCache\n\n        // Canvas dimensions.\n        // For deep tracks we paint a canvas == 3*viewportHeight centered on the current vertical scroll position\n        const {bpStart, bpEnd, pixelWidth} = this.repaintDimensions()\n        const viewportHeight = this.$viewport.height()\n        const contentHeight = this.getContentHeight()\n        const maxHeight = roiFeatures ? Math.max(contentHeight, viewportHeight) : contentHeight  // Need to fill viewport for ROIs.\n        const pixelHeight = Math.min(maxHeight, 3 * viewportHeight)\n        if (0 === pixelWidth || 0 === pixelHeight) {\n            if (this.canvas) {\n                $(this.canvas).remove()\n            }\n            return\n        }\n        const pixelTop = Math.max(0, -this.contentTop - Math.floor(pixelHeight / 3))\n\n        const bpPerPixel = this.referenceFrame.bpPerPixel\n        const pixelXOffset = Math.round((bpStart - this.referenceFrame.start) / bpPerPixel)\n        const canvasTop = (this.contentTop || 0) + pixelTop\n        const newCanvas = document.createElement('canvas')//  $('<canvas class=\"igv-canvas\">').get(0)\n        newCanvas.style.position = 'relative'\n        newCanvas.style.display = 'block'\n        newCanvas.style.width = pixelWidth + \"px\"\n        newCanvas.style.height = pixelHeight + \"px\"\n        newCanvas.style.left = pixelXOffset + \"px\"\n        newCanvas.style.top = canvasTop + \"px\"\n\n        // Always use high DPI if in \"FILL\" display mode, otherwise use track setting;\n        const devicePixelRatio = (\"FILL\" === this.trackView.track.displayMode || this.trackView.track.supportHiDPI !== false) ?\n            window.devicePixelRatio : 1\n        newCanvas.width = devicePixelRatio * pixelWidth\n        newCanvas.height = devicePixelRatio * pixelHeight\n\n        const ctx = newCanvas.getContext(\"2d\")\n        ctx.scale(devicePixelRatio, devicePixelRatio)\n        ctx.translate(0, -pixelTop)\n\n        const drawConfiguration =\n            {\n                context: ctx,\n                pixelXOffset,\n                pixelWidth,\n                pixelHeight,\n                pixelTop,\n                bpStart,\n                bpEnd: bpEnd,\n                bpPerPixel,\n                referenceFrame: this.referenceFrame,\n                selection: this.selection,\n                viewport: this,\n                viewportWidth: this.$viewport.width()\n            }\n\n        this.draw(drawConfiguration, features, roiFeatures)\n\n        if (this.canvas) {\n            $(this.canvas).remove()\n        }\n        newCanvas._data = drawConfiguration\n        this.canvas = newCanvas\n        this.$viewport.append($(newCanvas))\n\n    }\n\n    refresh() {\n        if (!(this.canvas && this.featureCache)) return\n\n        const drawConfiguration = this.canvas._data\n        drawConfiguration.context.clearRect(0, 0, this.canvas.width, this.canvas.height)\n        const {features, roiFeatures} = this.featureCache\n        this.draw(drawConfiguration, features, roiFeatures)\n    }\n\n    /**\n     * Draw the associated track.\n     *\n     * @param drawConfiguration\n     * @param features\n     * @param roiFeatures\n     */\n    draw(drawConfiguration, features, roiFeatures) {\n\n        if (features) {\n            drawConfiguration.features = features\n            this.trackView.track.draw(drawConfiguration)\n        }\n        if (roiFeatures && roiFeatures.length > 0) {\n            for (let r of roiFeatures) {\n                drawConfiguration.features = r.features\n                r.track.draw(drawConfiguration)\n            }\n        }\n    }\n\n    containsPosition(chr, position) {\n        if (this.referenceFrame.chr === chr && position >= this.referenceFrame.start) {\n            return position <= this.referenceFrame.calculateEnd(this.getWidth())\n        } else {\n            return false\n        }\n    }\n\n    isLoading() {\n        return this.loading\n    }\n\n    savePNG() {\n\n        if (!this.canvas) return\n\n        const canvasMetadata = this.canvas._data\n        const canvasTop = canvasMetadata ? canvasMetadata.pixelTop : 0\n        const devicePixelRatio = window.devicePixelRatio\n        const w = this.$viewport.width() * devicePixelRatio\n        const h = this.$viewport.height() * devicePixelRatio\n        const x = -$(this.canvas).position().left * devicePixelRatio\n        const y = (-this.contentTop - canvasTop) * devicePixelRatio\n\n        const ctx = this.canvas.getContext(\"2d\")\n        const imageData = ctx.getImageData(x, y, w, h)\n        const exportCanvas = document.createElement('canvas')\n        const exportCtx = exportCanvas.getContext('2d')\n        exportCanvas.width = imageData.width\n        exportCanvas.height = imageData.height\n        exportCtx.putImageData(imageData, 0, 0)\n\n        // filename = this.trackView.track.name + \".png\";\n        const filename = (this.$trackLabel.text() ? this.$trackLabel.text() : \"image\") + \".png\"\n        const data = exportCanvas.toDataURL(\"image/png\")\n        FileUtils.download(filename, data)\n    }\n\n    saveSVG() {\n\n        const marginTop = 32\n        const marginLeft = 32\n\n        let {width, height} = this.browser.columnContainer.getBoundingClientRect()\n\n        const h_render = 8000\n\n        const config =\n            {\n\n                width,\n                height: h_render,\n\n                backdropColor: 'white',\n\n                multiLocusGap: 0,\n\n                viewbox:\n                    {\n                        x: 0,\n                        y: 0,\n                        width,\n                        height: h_render\n                    }\n\n            }\n\n        const context = new C2S(config)\n\n        const delta =\n            {\n                deltaX: marginLeft,\n                deltaY: marginTop\n            }\n\n        this.renderViewportToSVG(context, delta)\n\n        // reset height to trim away unneeded svg canvas real estate. Yes, a bit of a hack.\n        context.setHeight(height)\n\n        const str = (this.trackView.track.name || this.trackView.track.id).replace(/\\W/g, '')\n        const index = this.browser.referenceFrameList.indexOf(this.referenceFrame)\n\n        const svg = context.getSerializedSvg(true)\n        const data = URL.createObjectURL(new Blob([svg], {type: \"application/octet-stream\"}))\n\n        const id = `${str}_referenceFrame_${index}_guid_${DOMUtils.guid()}`\n        FileUtils.download(`${id}.svg`, data)\n\n    }\n\n    // called by trackView.renderSVGContext() when rendering\n    // entire browser as SVG\n\n    renderViewportToSVG(context, {deltaX, deltaY}) {\n\n        if (this.$zoomInNotice && this.$zoomInNotice.is(\":visible\")) {\n            return\n        }\n\n        const {width, height} = this.$viewport.get(0).getBoundingClientRect()\n\n        const str = (this.trackView.track.name || this.trackView.track.id).replace(/\\W/g, '')\n        const index = this.browser.referenceFrameList.indexOf(this.referenceFrame)\n        const id = `${str}_referenceFrame_${index}_guid_${DOMUtils.guid()}`\n        this.drawSVGWithContext(context, width, height, id, deltaX, deltaY + this.contentTop, -this.contentTop)\n\n    }\n\n    renderSVGContext(context, {deltaX, deltaY}) {\n\n        this.renderViewportToSVG(context, {deltaX, deltaY})\n\n        if (this.$zoomInNotice && this.$zoomInNotice.is(\":visible\")) {\n            return\n        }\n\n        if (this.$trackLabel && true === this.browser.trackLabelsVisible) {\n            const {x, y, width, height} = DOMUtils.relativeDOMBBox(this.$viewport.get(0), this.$trackLabel.get(0))\n            this.renderTrackLabelSVG(context, deltaX + x, deltaY + y, width, height)\n        }\n\n    }\n\n    // render track label element called from renderSVGContext()\n    renderTrackLabelSVG(context, tx, ty, width, height) {\n\n        const str = (this.trackView.track.name || this.trackView.track.id).replace(/\\W/g, '')\n        const id = `${str}_track_label_guid_${DOMUtils.guid()}`\n\n        context.saveWithTranslationAndClipRect(id, tx, ty, width, height, 0)\n\n        context.fillStyle = \"white\"\n        context.fillRect(0, 0, width, height)\n\n        context.font = \"12px Arial\"\n        context.fillStyle = 'rgb(68, 68, 68)'\n\n        const {width: stringWidth} = context.measureText(this.$trackLabel.text())\n        const dx = 0.25 * (width - stringWidth)\n        const dy = 0.7 * (height - 12)\n        context.fillText(this.$trackLabel.text(), dx, height - dy)\n\n        context.strokeStyle = 'rgb(68, 68, 68)'\n        context.strokeRect(0, 0, width, height)\n\n        context.restore()\n\n    }\n\n    // called by renderSVGContext()\n    drawSVGWithContext(context, width, height, id, x, y, yClipOffset) {\n\n        context.saveWithTranslationAndClipRect(id, x, y, width, height, yClipOffset)\n\n        let {start, bpPerPixel} = this.referenceFrame\n\n        const config =\n            {\n                context,\n                viewport: this,\n                referenceFrame: this.referenceFrame,\n                top: yClipOffset,\n                pixelTop: yClipOffset,\n                pixelWidth: width,\n                pixelHeight: height,\n                bpStart: start,\n                bpEnd: start + (width * bpPerPixel),\n                bpPerPixel,\n                viewportWidth: width,\n                selection: this.selection\n            }\n\n        const features = this.featureCache ? this.featureCache.features : undefined\n        const roiFeatures = this.featureCache ? this.featureCache.roiFeatures : undefined\n        this.draw(config, features, roiFeatures)\n\n        context.restore()\n\n    }\n\n    get cachedFeatures() {\n        return this.featureCache ? this.featureCache.features : []\n    }\n\n    clearCache() {\n        this.featureCache = undefined\n        if (this.canvas) this.canvas._data = undefined\n    }\n\n    async getFeatures(track, chr, start, end, bpPerPixel) {\n        if (this.featureCache && this.featureCache.containsRange(chr, start, end, bpPerPixel)) {\n            return this.featureCache.features\n        } else if (typeof track.getFeatures === \"function\") {\n            const features = await track.getFeatures(chr, start, end, bpPerPixel, this)\n            this.checkContentHeight(features)\n            return features\n        } else {\n            return undefined\n        }\n    }\n\n    needsRepaint() {\n\n        if (!this.canvas) return true\n\n        const data = this.canvas._data\n        return !data ||\n            this.referenceFrame.start < data.bpStart ||\n            this.referenceFrame.end > data.bpEnd ||\n            this.referenceFrame.chr !== data.referenceFrame.chr ||\n            this.referenceFrame.bpPerPixel != data.bpPerPixel\n    }\n\n    needsReload() {\n        if (!this.featureCache) return true\n        const {chr, bpPerPixel} = this.referenceFrame\n        const {bpStart, bpEnd} = this.repaintDimensions()\n        return (!this.featureCache.containsRange(chr, bpStart, bpEnd, bpPerPixel))\n    }\n\n    createZoomInNotice($parent) {\n\n        const $container = $('<div>', {class: 'igv-zoom-in-notice-container'})\n        $parent.append($container)\n\n        const $e = $('<div>')\n        $container.append($e)\n\n        $e.text('Zoom in to see features')\n\n        $container.hide()\n\n        return $container\n    }\n\n    viewIsReady() {\n        return this.browser && this.browser.referenceFrameList && this.referenceFrame\n    }\n\n    addMouseHandlers() {\n\n        const viewport = this.$viewport.get(0)\n\n        this.addViewportContextMenuHandler(viewport)\n\n        // Mouse down\n        const md = (event) => {\n            this.enableClick = true\n            this.browser.mouseDownOnViewport(event, this)\n            mouseDownCoords = DOMUtils.pageCoordinates(event)\n        }\n        viewport.addEventListener('mousedown', md)\n        viewport.addEventListener('touchstart', md)\n\n        // Mouse up\n        const mu = (event) => {\n            // Any mouse up cancels drag and scrolling\n            if (this.browser.dragObject || this.browser.isScrolling) {\n                this.browser.cancelTrackPan()\n                // event.preventDefault();\n                // event.stopPropagation();\n                this.enableClick = false   // Until next mouse down\n            } else {\n                this.browser.cancelTrackPan()\n                this.browser.endTrackDrag()\n            }\n        }\n        viewport.addEventListener('mouseup', mu)\n        viewport.addEventListener('touchend', mu)\n\n        // Mouse move\n        if (typeof this.trackView.track.hoverText === 'function') {\n            viewport.addEventListener('mousemove', (event => {\n                if (event.buttons === 0 && (Date.now() - lastHoverUpdateTime > 100)) {\n                    lastHoverUpdateTime = Date.now()\n                    const clickState = this.createClickState(event)\n                    if (clickState) {\n                        const tooltip = this.trackView.track.hoverText(clickState)\n                        if (tooltip) {\n                            this.$viewport[0].setAttribute(\"title\", tooltip)\n                        } else {\n                            this.$viewport[0].removeAttribute(\"title\")\n                        }\n                    }\n                }\n            }))\n        }\n\n        this.addViewportClickHandler(this.$viewport.get(0))\n\n        if (this.trackView.track.name && \"sequence\" !== this.trackView.track.config.type) {\n            this.addTrackLabelClickHandler(this.$trackLabel.get(0))\n        }\n\n    }\n\n    addViewportContextMenuHandler(viewport) {\n\n        viewport.addEventListener('contextmenu', (event) => {\n\n            // Ignore if we are doing a drag.  This can happen with touch events.\n            if (this.browser.dragObject) {\n                return false\n            }\n\n            const clickState = this.createClickState(event)\n\n            if (undefined === clickState) {\n                return false\n            }\n\n            event.preventDefault()\n\n            // Track specific items\n            let menuItems = []\n            if (typeof this.trackView.track.contextMenuItemList === \"function\") {\n                const trackMenuItems = this.trackView.track.contextMenuItemList(clickState)\n                if (trackMenuItems) {\n                    menuItems = trackMenuItems\n                }\n            }\n\n            // Add items common to all tracks\n            if (menuItems.length > 0) {\n                menuItems.push({label: $('<HR>')})\n            }\n\n            menuItems.push({label: 'Save Image (PNG)', click: () => this.savePNG()})\n            menuItems.push({label: 'Save Image (SVG)', click: () => this.saveSVG()})\n\n            this.browser.menuPopup.presentTrackContextMenu(event, menuItems)\n        })\n\n    }\n\n\n    addViewportClickHandler(viewport) {\n\n        viewport.addEventListener('click', (event) => {\n\n            if (this.enableClick && this.canvas) {\n                if (3 === event.which || event.ctrlKey) {\n                    return\n                }\n\n                // Close any currently open popups\n                $('.igv-popover').hide()\n\n\n                if (this.browser.dragObject || this.browser.isScrolling) {\n                    return\n                }\n\n                // Treat as a mouse click, its either a single or double click.\n                // Handle here and stop propogation / default\n                event.preventDefault()\n\n                const mouseX = DOMUtils.translateMouseCoordinates(event, this.$viewport.get(0)).x\n                const mouseXCanvas = DOMUtils.translateMouseCoordinates(event, this.canvas).x\n                const referenceFrame = this.referenceFrame\n                const xBP = Math.floor((referenceFrame.start) + referenceFrame.toBP(mouseXCanvas))\n\n                const time = Date.now()\n\n                if (time - lastClickTime < this.browser.constants.doubleClickDelay) {\n\n                    // double-click\n                    if (popupTimerID) {\n                        window.clearTimeout(popupTimerID)\n                        popupTimerID = undefined\n                    }\n\n                    const centerBP = Math.round(referenceFrame.start + referenceFrame.toBP(mouseX))\n\n                    let string\n\n                    if ('all' === this.referenceFrame.chr.toLowerCase()) {\n\n                        const chr = this.browser.genome.getChromosomeCoordinate(centerBP).chr\n\n                        if (1 === this.browser.referenceFrameList.length) {\n                            string = chr\n                        } else {\n                            const loci = this.browser.referenceFrameList.map(({locusSearchString}) => locusSearchString)\n                            const index = this.browser.referenceFrameList.indexOf(this.referenceFrame)\n                            loci[index] = chr\n                            string = loci.join(' ')\n                        }\n\n                        this.browser.search(string)\n\n                    } else {\n                        this.browser.zoomWithScaleFactor(0.5, centerBP, this.referenceFrame)\n                    }\n\n\n                } else {\n                    // single-click\n\n                    if (event.shiftKey && typeof this.trackView.track.shiftClick === \"function\") {\n\n                        this.trackView.track.shiftClick(xBP, event)\n\n                    } else if (typeof this.trackView.track.popupData === \"function\") {\n\n                        popupTimerID = setTimeout(() => {\n\n                                const content = this.getPopupContent(event)\n                                if (content) {\n                                    if (this.popover) this.popover.dispose()\n                                    this.popover = new Popover(this.browser.columnContainer)\n                                    this.popover.presentContentWithEvent(event, content)\n                                }\n                                window.clearTimeout(popupTimerID)\n                                popupTimerID = undefined\n                            },\n                            this.browser.constants.doubleClickDelay)\n                    }\n                }\n\n                lastClickTime = time\n\n            }\n        })\n    }\n\n    addTrackLabelClickHandler(trackLabel) {\n\n        trackLabel.addEventListener('click', (event) => {\n\n            event.stopPropagation()\n\n            const {track} = this.trackView\n\n            let str\n            if (typeof track.description === 'function') {\n                str = track.description()\n            } else if (track.description) {\n                str = `<div>${track.description}</div>`\n            }\n\n            if (str) {\n                if (this.popover) {\n                    this.popover.dispose()\n                }\n                this.popover = new Popover(this.browser.columnContainer, (track.name || ''))\n                this.popover.presentContentWithEvent(event, str)\n            }\n        })\n    }\n\n    createClickState(event) {\n\n        if (!this.canvas) return  // Can happen during initialization\n\n        const referenceFrame = this.referenceFrame\n        const viewportCoords = DOMUtils.translateMouseCoordinates(event, this.$viewport.get(0))\n        const canvasCoords = DOMUtils.translateMouseCoordinates(event, this.canvas)\n        const genomicLocation = ((referenceFrame.start) + referenceFrame.toBP(viewportCoords.x))\n\n        return {\n            event,\n            viewport: this,\n            referenceFrame,\n            genomicLocation,\n            y: viewportCoords.y - this.contentTop,\n            canvasX: canvasCoords.x,\n            canvasY: canvasCoords.y\n        }\n\n    }\n\n    getPopupContent(event) {\n\n        const clickState = this.createClickState(event)\n\n        if (undefined === clickState) {\n            return\n        }\n\n        let track = this.trackView.track\n        const dataList = track.popupData(clickState)\n\n        const popupClickHandlerResult = this.browser.fireEvent('trackclick', [track, dataList])\n\n        let content\n        if (undefined === popupClickHandlerResult || true === popupClickHandlerResult) {\n            // Indicates handler did not handle the result, or the handler wishes default behavior to occur\n            if (dataList && dataList.length > 0) {\n                content = formatPopoverText(dataList)\n            }\n\n        } else if (typeof popupClickHandlerResult === 'string') {\n            content = popupClickHandlerResult\n        }\n\n        return content\n    }\n\n\n}\n\n\nfunction formatPopoverText(nameValues) {\n\n    const rows = nameValues.map(nameValue => {\n\n        if (nameValue.name) {\n            const str = `<span>${nameValue.name}</span>&nbsp&nbsp&nbsp${nameValue.value}`\n            return `<div title=\"${nameValue.value}\">${str}</div>`\n        } else if ('<hr>' === nameValue) { // this can be retired if nameValue.html is allowed.\n            return nameValue\n        } else if (nameValue.html) {\n            return nameValue.html\n        } else {\n            return `<div title=\"${nameValue}\">${nameValue}</div>`\n        }\n\n    })\n\n    return rows.join('')\n}\n\nclass FeatureCache {\n\n    constructor(chr, tileStart, tileEnd, bpPerPixel, features, roiFeatures, multiresolution) {\n        this.chr = chr\n        this.bpStart = tileStart\n        this.bpEnd = tileEnd\n        this.bpPerPixel = bpPerPixel\n        this.features = features\n        this.roiFeatures = roiFeatures\n        this.multiresolution = multiresolution\n    }\n\n    containsRange(chr, start, end, bpPerPixel) {\n\n        // For multi-resolution tracks allow for a 2X change in bpPerPixel\n        const r = this.multiresolution ? this.bpPerPixel / bpPerPixel : 1\n\n        return start >= this.bpStart && end <= this.bpEnd && chr === this.chr && r > 0.5 && r < 2\n    }\n\n    overlapsRange(chr, start, end) {\n        return this.chr === chr && end >= this.bpStart && start <= this.bpEnd\n    }\n}\n\n\n/**\n * Merge 2 arrays.  a and/or b can be undefined.  If both are undefined, return undefined\n * @param a An array or undefined\n * @param b An array or undefined\n */\nfunction mergeArrays(a, b) {\n    if (a && b) return a.concat(b)\n    else if (a) return a\n    else return b\n\n}\n\nexport default TrackViewport\n","import {IGVColor} from \"../../../node_modules/igv-utils/src/index.js\"\n\n/**\n * Decode UCSC \"interact\" files.  See https://genome.ucsc.edu/goldenpath/help/interact.html\n *\n 0  string chrom;        \"Chromosome (or contig, scaffold, etc.). For interchromosomal, use 2 records\"\n 1  uint chromStart;     \"Start position of lower region. For interchromosomal, set to chromStart of this region\"\n 2  uint chromEnd;       \"End position of upper region. For interchromosomal, set to chromEnd of this region\"\n 3  string name;         \"Name of item, for display.  Usually 'sourceName/targetName/exp' or empty\"\n 4  uint score;          \"Score (0-1000)\"\n 5  double value;        \"Strength of interaction or other data value. Typically basis for score\"\n 6  string exp;          \"Experiment name (metadata for filtering). Use . if not applicable\"\n 7  string color;        \"Item color.  Specified as r,g,b or hexadecimal #RRGGBB or html color name, as in //www.w3.org/TR/css3-color/#html4. Use 0 and spectrum setting to shade by score\"\n 8  string sourceChrom;  \"Chromosome of source region (directional) or lower region. For non-directional interchromosomal, chrom of this region.\"\n 9  uint sourceStart;    \"Start position in chromosome of source/lower/this region\"\n 10 uint sourceEnd;      \"End position in chromosome of source/lower/this region\"\n 11 string sourceName;   \"Identifier of source/lower/this region\"\n 12 string sourceStrand; \"Orientation of source/lower/this region: + or -.  Use . if not applicable\"\n 13 string targetChrom;  \"Chromosome of target region (directional) or upper region. For non-directional interchromosomal, chrom of other region\"\n 14 uint targetStart;    \"Start position in chromosome of target/upper/this region\"\n 15 uint targetEnd;      \"End position in chromosome of target/upper/this region\"\n 16 string targetName;   \"Identifier of target/upper/this region\"\n 17 string targetStrand; \"Orientation of target/upper/this region: + or -.  Use . if not applicable\"\n *\n * @param tokens\n * @param ignore\n * @returns {*}\n */\nfunction decodeInteract(tokens, header) {\n\n    if (tokens.length < 6) {\n        console.log(\"Skipping line: \" + tokens.join(' '))\n        return undefined\n    }\n\n    var feature = {\n        chr: tokens[0],\n        start: tokens[1],\n        end: tokens[2],\n\n        chr1: tokens[8],\n        start1: Number.parseInt(tokens[9]),\n        end1: Number.parseInt(tokens[10]),\n\n        chr2: tokens[13],\n        start2: Number.parseInt(tokens[14]),\n        end2: Number.parseInt(tokens[15]),\n\n        name: tokens[3],\n        score: Number(tokens[4]),\n        value: Number(tokens[5]),\n        color: tokens[7] === '.' ? undefined : tokens[7] === \"0\" ? \"rgb(0,0,0)\" : tokens[7],\n\n    }\n\n    return feature\n}\n\n/**\n * Special decoder for Hic Domain files.   In these files feature1 == feature2, they are really bed records.\n * @param tokens\n * @param ignore\n * @returns {*}\n */\nfunction decodeBedpeDomain(tokens, ignore) {\n\n    if (tokens.length < 8) return undefined\n\n    return {\n        chr: tokens[0],\n        start: Number.parseInt(tokens[1]),\n        end: Number.parseInt(tokens[2]),\n        color: IGVColor.createColorString(tokens[6]),\n        score: Number(tokens[7])\n    }\n}\n\n\nexport {decodeInteract}","/**\n * Some interpretations of the sequence ontology needed to assemble GFF transcripts.\n *\n */\n\nconst transcriptTypes = new Set(['transcript', 'primary_transcript', 'processed_transcript', 'mRNA', 'mrna',\n    'lnc_RNA', 'miRNA', 'ncRNA', 'rRNA', 'scRNA', 'snRNA', 'snoRNA', 'tRNA'])\nconst cdsTypes = new Set(['CDS', 'cds'])\nconst codonTypes = new Set(['start_codon', 'stop_codon'])\nconst utrTypes = new Set(['5UTR', '3UTR', 'UTR', 'five_prime_UTR', 'three_prime_UTR', \"3'-UTR\", \"5'-UTR\"])\nconst exonTypes = new Set(['exon', 'coding-exon'])\n\nconst transcriptPartTypes = new Set()\nfor (let cltn of [cdsTypes, codonTypes, utrTypes, exonTypes]) {\n    for (let t of cltn) {\n        transcriptPartTypes.add(t)\n    }\n}\n\nfunction isExon(type) {\n    return exonTypes.has(type)\n}\n\nfunction isIntron(type) {\n    return type.includes(\"intron\")\n}\n\nfunction isCoding(type) {\n    return cdsTypes.has(type) || codonTypes.has(type)\n}\n\nfunction isUTR(type) {\n    return utrTypes.has(type)\n}\n\nfunction isTranscript(type) {\n    return transcriptTypes.has(type) || type.endsWith(\"RNA\") || type.endsWith(\"transcript\")\n}\n\nfunction isTranscriptPart(type) {\n    return transcriptPartTypes.has(type) || type.endsWith(\"RNA\") || isIntron(type)\n}\n\n\nexport {isTranscript, isTranscriptPart, isExon, isIntron, isCoding, isUTR}\n","import {StringUtils} from \"../../../node_modules/igv-utils/src/index.js\"\nimport {isCoding, isIntron, isUTR} from \"./so.js\"\nimport {parseAttributeString} from \"./gff.js\"\n\nconst filterPopupProperties = new Set([\"id\", \"parent\", \"name\"])\n\nclass GFFFeature {\n\n    constructor(properties) {\n        Object.assign(this, properties)\n    }\n\n    popupData(genomicLocation) {\n\n        const pd = this.geneObject ? this.geneObject.popupData() : []\n\n        if (this.geneObject) {\n            pd.push('<hr/>')\n        }\n\n        if (this.name) {\n            pd.push({name: 'Name', value: this.name})\n        }\n\n        pd.push({name: 'Type', value: this.type})\n        pd.push({name: 'Source', value: this.source})\n        if (this.score !== undefined) {\n            pd.push({name: 'Score', value: this.score})\n        }\n\n        if (this.attributeString) {\n            const atts = parseAttributeString(this.attributeString, this.delim)\n            for (let [key, value] of atts) {\n                if (value !== undefined && value.length > 0 && !filterPopupProperties.has(key.toLowerCase())) {\n                    pd.push({name: key + \":\", value: value})\n                }\n            }\n        }\n        pd.push({\n            name: 'Location',\n            value: `${this.chr}:${StringUtils.numberFormatter(this.start + 1)}-${StringUtils.numberFormatter(this.end)}`\n        })\n        return pd\n    }\n\n    getAttributeValue(attributeName) {\n        if (this.hasOwnProperty(attributeName)) {\n            return this[attributeName]\n        } else {\n            // TODO -- fetch from attribute string and cache\n            if (!this._attributeCache) {\n                this._attributeCache = new Map()\n            }\n            if (this._attributeCache.has(attributeName)) {\n                return this._attributeCache.get(attributeName)\n            } else {\n                const atts = parseAttributeString(this.attributeString, this.delim)\n                let v\n                for (let [key, value] of atts) {\n                    if (key === attributeName) {\n                        v = value\n                        break\n                    }\n                }\n                this._attributeCache.set(attributeName, v)\n                return v\n            }\n        }\n    }\n}\n\nclass GFFTranscript extends GFFFeature {\n\n    constructor(feature) {\n        super(feature)\n        this.exons = []\n        this.parts = []\n    }\n\n    addExon(feature) {\n\n        this.exons.push(feature)\n\n        // Expand feature --  for transcripts not explicitly represented in the file (gtf)\n        this.start = Math.min(this.start, feature.start)\n        this.end = Math.max(this.end, feature.end)\n    }\n\n    addPart(feature) {\n        this.parts.push(feature)\n    }\n\n    assembleParts() {\n\n        if (this.parts.length === 0) return\n\n        this.parts.sort(function (a, b) {\n            return a.start - b.start\n        })\n\n        // Create exons, if neccessary\n        let lastStart = this.parts[0].start\n        let lastEnd = this.parts[0].end\n        for (let i = 1; i < this.parts.length; i++) {\n            const part = this.parts[i]\n            if (isIntron(part.type)) {\n                continue\n            }\n            if (part.start <= lastEnd) {\n                lastEnd = Math.max(lastEnd, part.end)\n            } else {\n                let exon = this.findExonContaining({start: lastStart, end: lastEnd})\n                if (!exon) {\n                    this.exons.push({start: lastStart, end: lastEnd, psuedo: true})\n                }\n                lastStart = part.start\n                lastEnd = part.end\n            }\n        }\n        let exon = this.findExonContaining({start: lastStart, end: lastEnd})\n        if (!exon) {\n            this.exons.push({start: lastStart, end: lastEnd, psuedo: true})\n            this.start = Math.min(this.start, lastStart)\n            this.end = Math.max(this.end, lastEnd)\n        }\n\n\n        for (let part of this.parts) {\n            const type = part.type\n            if (isCoding(type)) {\n                this.addCDS(part)\n            } else if (isUTR(type)) {\n                this.addUTR(part)\n            }\n        }\n    }\n\n    findExonContaining({start, end}) {\n        for (let exon of this.exons) {\n            if (exon.end >= end && exon.start <= start) {\n                return exon\n            }\n        }\n        return undefined\n    }\n\n    addCDS(cds) {\n\n        let exon\n        const exons = this.exons\n\n        for (let e of exons) {\n            if (e.start <= cds.start && e.end >= cds.end) {\n                exon = e\n                break\n            }\n        }\n\n        if (exon) {\n            exon.cdStart = exon.cdStart ? Math.min(cds.start, exon.cdStart) : cds.start\n            exon.cdEnd = exon.cdEnd ? Math.max(cds.end, exon.cdEnd) : cds.end\n        } else {\n            // cds.cdStart = cds.start\n            // cds.cdEnd = cds.end\n            // exons.push(cds)\n            console.error(\"No exon found spanning \" + cds.start + \"-\" + cds.end)\n        }\n\n        // Expand feature --  for transcripts not explicitly represented in the file (gtf files)\n        // this.start = Math.min(this.start, cds.start);\n        // this.end = Math.max(this.end, cds.end);\n\n        this.cdStart = this.cdStart ? Math.min(cds.start, this.cdStart) : cds.start\n        this.cdEnd = this.cdEnd ? Math.max(cds.end, this.cdEnd) : cds.end\n    }\n\n    addUTR(utr) {\n\n        let exon\n        const exons = this.exons\n\n        // Find exon containing CDS\n        for (let i = 0; i < exons.length; i++) {\n            if (exons[i].start <= utr.start && exons[i].end >= utr.end) {\n                exon = exons[i]\n                break\n            }\n        }\n\n        if (exon) {\n            if (utr.start === exon.start && utr.end === exon.end) {\n                exon.utr = true\n            } else {\n                if (utr.end < exon.end) {\n                    exon.cdStart = utr.end\n                }\n                if (utr.start > exon.start) {\n                    exon.cdEnd = utr.start\n                }\n            }\n\n        } else {\n            // utr.utr = true\n            // exons.push(utr)\n            console.error(\"No exon found spanning \" + cds.start + \"-\" + cds.end)\n        }\n\n        // Expand feature --  for transcripts not explicitly represented in the file\n        // this.start = Math.min(this.start, utr.start);\n        // this.end = Math.max(this.end, utr.end);\n\n    }\n\n    finish() {\n\n        this.assembleParts()\n\n        var cdStart = this.cdStart\n        var cdEnd = this.cdEnd\n\n        this.exons.sort(function (a, b) {\n            return a.start - b.start\n        })\n\n        // Search for UTR exons that were not explicitly tagged\n        if (cdStart) {\n            this.exons.forEach(function (exon) {\n                if (exon.end < cdStart || exon.start > cdEnd) exon.utr = true\n            })\n        }\n    }\n\n    popupData(genomicLocation) {\n\n        const pd = super.popupData(genomicLocation)\n\n        // If clicked over an exon add its attributes\n        for (let exon of this.exons) {\n            if (exon.pseudo) continue  // An implicit exon\n            if (genomicLocation >= exon.start && genomicLocation < exon.end && typeof exon.popupData === 'function') {\n                pd.push('<hr/>')\n                const exonData = exon.popupData(genomicLocation)\n                for (let att of exonData) {\n                    pd.push(att)\n                }\n            }\n        }\n\n        for (let part of this.parts) {\n            if (genomicLocation >= part.start && genomicLocation < part.end && typeof part.popupData === 'function') {\n                pd.push('<hr/>')\n                const partData = part.popupData(genomicLocation)\n                for (let att of partData) {\n                    pd.push(att)\n                }\n            }\n        }\n\n\n        return pd\n    }\n}\n\nexport {GFFFeature, GFFTranscript}\n","import {IGVColor} from \"../../../node_modules/igv-utils/src/index.js\"\nimport {GFFFeature} from \"./gffFeature.js\"\n\nfunction decode(tokens, header) {\n\n    const format = header.format\n    if (tokens.length < 9) {\n        return undefined      // Not a valid gff record\n    }\n\n    const delim = ('gff3' === format) ? '=' : ' '\n    return new GFFFeature({\n        source: decodeGFFAttribute(tokens[1]),\n        type: tokens[2],\n        chr: tokens[0],\n        start: parseInt(tokens[3]) - 1,\n        end: parseInt(tokens[4]),\n        score: \".\" === tokens[5] ? undefined : Number(tokens[5]),\n        strand: tokens[6],\n        phase: \".\" === tokens[7] ? 0 : parseInt(tokens[7]),\n        attributeString: tokens[8],\n        delim: delim\n    })\n}\n\n\n/**\n * Decode a single gff record (1 line in file).  Aggregations such as gene models are constructed at a higher level.\n *      ctg123 . mRNA            1050  9000  .  +  .  ID=mRNA00001;Parent=gene00001\n * @param tokens\n * @param ignore\n * @returns {*}\n */\nfunction decodeGFF3(tokens, header) {\n\n    const feature = decode(tokens, header)\n\n    if (!feature) {\n        return\n    }\n\n    const attributes = parseAttributeString(feature.attributeString, feature.delim)\n\n    // Search for color value as case insenstivie key\n    for (let [key, value] of attributes) {\n        const keyLower = key.toLowerCase()\n        if (\"color\" === keyLower || \"colour\" === keyLower) {\n            feature.color = IGVColor.createColorString(value)\n        } else if (key === \"ID\") {\n            feature.id = value\n        } else if (key === \"Parent\") {\n            feature.parent = value\n        }\n    }\n    return feature\n}\n\n/**\n * GTF format example:\n NC_000008.11    BestRefSeq    gene    127735434    127742951    .    +    .    gene_id \"MYC\"; transcript_id \"\"; db_xref \"GeneID:4609\"; db_xref \"HGNC:HGNC:7553\"; db_xref \"MIM:190080\"; description \"MYC proto-oncogene, bHLH transcription factor\"; gbkey \"Gene\"; gene \"MYC\"; gene_biotype \"protein_coding\"; gene_synonym \"bHLHe39\"; gene_synonym \"c-Myc\"; gene_synonym \"MRTL\"; gene_synonym \"MYCC\";\n NC_000008.11    BestRefSeq    transcript    127735434    127742951    .    +    .    gene_id \"MYC\"; transcript_id \"NM_001354870.1\"; db_xref \"GeneID:4609\"; gbkey \"mRNA\"; gene \"MYC\"; product \"MYC proto-oncogene, bHLH transcription factor, transcript variant 2\"; transcript_biotype \"mRNA\";\n NC_000008.11    BestRefSeq    exon    127735434    127736623    .    +    .    gene_id \"MYC\"; transcript_id \"NM_001354870.1\"; db_xref \"GeneID:4609\"; gene \"MYC\"; product \"MYC proto-oncogene, bHLH transcription factor, transcript variant 2\"; transcript_biotype \"mRNA\"; exon_number \"1\";\n *\n * @param tokens\n * @param ignore\n * @returns {*}\n */\nfunction decodeGTF(tokens, header) {\n\n    const feature = decode(tokens, header)\n\n    if (!feature) {\n        return\n    }\n\n    const attributes = parseAttributeString(feature.attributeString, feature.delim)\n\n    // GTF files specify neither ID nor parent fields, but they can be inferred from common conventions\n    let idField\n    let parentField\n    switch (feature.type) {\n        case \"gene\":\n            idField = \"gene_id\"\n            break\n        case \"transcript\":\n            idField = \"transcript_id\"\n            parentField = \"gene_id\"\n            break\n        default:\n            parentField = \"transcript_id\"\n    }\n\n    for (let [key, value] of attributes) {\n        const keyLower = key.toLowerCase()\n        if (\"color\" === keyLower || \"colour\" === keyLower) {\n            feature.color = IGVColor.createColorString(value)\n        } else if (key === idField) {\n            feature.id = value\n        } else if (key === parentField) {\n            feature.parent = value\n        }\n    }\n    return feature\n\n}\n\n\n/**\n * Parse the attribute string, returning an array of key-value pairs.  An array is used rather than a map as attribute\n * keys are not required to be unique.\n *\n * @param attributeString\n * @param keyValueDelim\n * @returns {[]}\n */\nfunction parseAttributeString(attributeString, keyValueDelim, relaxed = false) {\n    // parse 'attributes' string (see column 9 docs in https://github.com/The-Sequence-Ontology/Specifications/blob/master/gff3.md)\n    var attributes = []\n    for (let kv of attributeString.split(';')) {\n        kv = kv.trim()\n        const idx = kv.indexOf(keyValueDelim)\n        if (idx > 0 && idx < kv.length - 1) {\n            const key = stripQuotes(decodeGFFAttribute(kv.substring(0, idx).trim(), relaxed))\n            let value = stripQuotes(decodeGFFAttribute(kv.substring(idx + 1).trim(), relaxed))\n            attributes.push([key, value])\n        }\n    }\n    return attributes\n}\n\nfunction stripQuotes(value) {\n    if (value.startsWith('\"') && value.endsWith('\"')) {\n        value = value.substr(1, value.length - 2)\n    }\n    return value\n}\n\n// GFF3 attributes have specific percent encoding rules, the list below are required, all others are forbidden\n/*\ntab (%09)\nnewline (%0A)\ncarriage return (%0D)\n% percent (%25)\ncontrol characters (%00 through %1F, %7F)\nIn addition, the following characters have reserved meanings in column 9 and must be escaped when used in other contexts:\n; semicolon (%3B)\n= equals (%3D)\n& ampersand (%26)\n, comma (%2C)\n */\n\nconst encodings = new Map([\n    [\"%09\", \"\\t\"],\n    [\"%0A\", \"\\n\"],\n    [\"%0D\", \"\\r\"],\n    [\"%25\", \"%\"],\n    [\"%3B\", \";\"],\n    [\"%3D\", \"=\"],\n    [\"%26\", \"&\"],\n    [\"%2C\", \",\"]\n])\n\nfunction decodeGFFAttribute(str, relaxed = false) {\n\n    if (!str.includes(\"%\")) {\n        return str\n    }\n    if (relaxed) {\n        return decodeURIComponent(str);\n    }\n    let decoded = \"\"\n    for (let i = 0; i < str.length; i++) {\n\n        if (str.charCodeAt(i) === 37 && i < str.length - 2) {\n            const key = str.substring(i, i + 3)\n            if (encodings.has(key)) {\n                decoded += encodings.get(key)\n            } else {\n                decoded += key\n            }\n            i += 2\n        } else {\n            decoded += str.charAt(i)\n        }\n    }\n    return decoded\n\n}\n\n\nexport {decodeGFF3, decodeGTF, parseAttributeString, decodeGFFAttribute}\n\n\n\n","/**\n * Wrapper class to record a decoding error.\n */\n\nclass DecodeError {\n    constructor(message) {\n        this.message = message\n    }\n}\n\nexport default DecodeError","import {IGVColor} from \"../../../node_modules/igv-utils/src/index.js\"\nimport {parseAttributeString} from \"../gff/gff.js\"\nimport DecodeError from \"./decodeError.js\"\n\n\n/**\n * Decode the UCSC bed format.  Only the first 3 columns (chr, start, end) are required.   The remaining columns\n * must follow standard bed order, but we will tolerate deviations after column 3.\n *\n * @param tokens\n * @param ignore\n * @returns decoded feature, or null if this is not a valid record\n */\nfunction decodeBed(tokens, header) {\n\n\n    if (tokens.length < 3) return undefined\n\n    const gffTags = header && header.gffTags\n\n    const chr = tokens[0]\n    const start = parseInt(tokens[1])\n    const end = tokens.length > 2 ? parseInt(tokens[2]) : start + 1\n    if (isNaN(start) || isNaN(end)) {\n        return new DecodeError(`Unparsable bed record.`)\n    }\n    const feature = new UCSCBedFeature({chr: chr, start: start, end: end, score: 1000})\n\n    try {\n        if (tokens.length > 3) {\n\n            // Potentially parse name field as GFF column 9 style streng.\n            if (tokens[3].indexOf(';') > 0 && tokens[3].indexOf('=') > 0) {\n                const attributeKVs = parseAttributeString(tokens[3], '=', true)\n                feature.attributes = {}\n                for (let kv of attributeKVs) {\n                    feature.attributes[kv[0]] = kv[1]\n                    if (header.nameField != undefined && kv[0] === header.nameField) {\n                        feature.name = kv[1]\n                    }\n                }\n            }\n            if (!feature.name) {\n                feature.name = tokens[3] === '.' ? '' : tokens[3]\n            }\n        }\n\n        if (tokens.length > 4) {\n            feature.score = tokens[4] === '.' ? 0 : Number(tokens[4])\n            if (isNaN(feature.score)) {\n                return feature\n            }\n        }\n\n        if (tokens.length > 5) {\n            feature.strand = tokens[5]\n            if (!(feature.strand === '.' || feature.strand === '+' || feature.strand === '-')) {\n                return feature\n            }\n        }\n\n        if (tokens.length > 6) {\n            feature.cdStart = parseInt(tokens[6])\n            if (isNaN(feature.cdStart)) {\n                return feature\n            }\n        }\n\n        if (tokens.length > 7) {\n            feature.cdEnd = parseInt(tokens[7])\n            if (isNaN(feature.cdEnd)) {\n                return feature\n            }\n        }\n\n        if (tokens.length > 8) {\n            if (tokens[8] !== \".\" && tokens[8] !== \"0\")\n                feature.color = IGVColor.createColorString(tokens[8])\n        }\n\n        if (tokens.length > 11) {\n            const exonCount = parseInt(tokens[9])\n            // Some basic validation\n            if (exonCount > 1000) {\n                // unlikely\n                return feature\n            }\n\n            const exonSizes = tokens[10].replace(/,$/, '').split(',')\n            const exonStarts = tokens[11].replace(/,$/, '').split(',')\n            if (!(exonSizes.length === exonStarts.length && exonCount === exonSizes.length)) {\n                return feature\n            }\n\n            const exons = []\n            for (let i = 0; i < exonCount; i++) {\n                const eStart = start + parseInt(exonStarts[i])\n                const eEnd = eStart + parseInt(exonSizes[i])\n                exons.push({start: eStart, end: eEnd})\n            }\n            if (exons.length > 0) {\n                findUTRs(exons, feature.cdStart, feature.cdEnd)\n                feature.exons = exons\n            }\n        }\n\n        // Optional extra columns\n        if (header) {\n            let thicknessColumn = header.thicknessColumn\n            let colorColumn = header.colorColumn\n            if (colorColumn && colorColumn < tokens.length) {\n                feature.color = IGVColor.createColorString(tokens[colorColumn])\n            }\n            if (thicknessColumn && thicknessColumn < tokens.length) {\n                feature.thickness = tokens[thicknessColumn]\n            }\n        }\n    } catch\n        (e) {\n\n    }\n\n    return feature\n}\n\n/**\n * Decode a UCSC repeat masker record.\n */\nfunction decodeRepeatMasker(tokens, header) {\n\n    /**\n     * Columns, from UCSC documentation\n     *\n     * 0  bin    585    smallint(5) unsigned    Indexing field to speed chromosome range queries.\n     * 1  swScore    1504    int(10) unsigned    Smith Waterman alignment score\n     * 2  milliDiv    13    int(10) unsigned    Base mismatches in parts per thousand\n     * 3  milliDel    4    int(10) unsigned    Bases deleted in parts per thousand\n     * 4  milliIns    13    int(10) unsigned    Bases inserted in parts per thousand\n     * 5  genoName    chr1    varchar(255)    Genomic sequence name\n     * 6  genoStart    10000    int(10) unsigned    Start in genomic sequence\n     * 7  genoEnd    10468    int(10) unsigned    End in genomic sequence\n     * 8  genoLeft    -249240153    int(11)    -#bases after match in genomic sequence\n     * 9  strand    +    char(1)    Relative orientation + or -\n     * 10 repName    (CCCTAA)n    varchar(255)    Name of repeat\n     * 11 repClass    Simple_repeat    varchar(255)    Class of repeat\n     * 12 repFamily    Simple_repeat    varchar(255)    Family of repeat\n     * 13 repStart    1    int(11)    Start (if strand is +) or -#bases after match (if strand is -) in repeat sequence\n     * 14 repEnd    463    int(11)    End in repeat sequence\n     * 15 repLeft    0    int(11)    -#bases after match (if strand is +) or start (if strand is -) in repeat sequence\n     * 16 id    1    char(1)    First digit of id field in RepeatMasker .out file. Best ignored.\n     */\n    if (tokens.length <= 15) return undefined\n\n    const feature = {\n        swScore: Number.parseInt(tokens[1]),\n        milliDiv: Number.parseInt(tokens[2]),\n        milliDel: Number.parseInt(tokens[3]),\n        milliIns: Number.parseInt(tokens[4]),\n        chr: tokens[5],\n        start: Number.parseInt(tokens[6]),\n        end: Number.parseInt(tokens[7]),\n        //genoLeft: tokens[8],\n        strand: tokens[9],\n        repName: tokens[10],\n        repClass: tokens[11],\n        repFamily: tokens[12],\n        repStart: Number.parseInt(tokens[13]),\n        repEnd: Number.parseInt(tokens[14]),\n        repLeft: Number.parseInt(tokens[15])\n    }\n\n    return feature\n\n}\n\n/**\n * Decode a UCSC \"genePred\" record.\n *\n * @param tokens\n * @param ignore\n * @returns {*}\n */\nfunction decodeGenePred(tokens, header) {\n\n    var shift = header.shift === undefined ? 0 : 1\n\n    if (tokens.length <= 9 + shift) return undefined\n\n    const cdStart = parseInt(tokens[5 + shift])\n    const cdEnd = parseInt(tokens[6 + shift])\n    var feature = {\n        name: tokens[0 + shift],\n        chr: tokens[1 + shift],\n        strand: tokens[2 + shift],\n        start: parseInt(tokens[3 + shift]),\n        end: parseInt(tokens[4 + shift]),\n        cdStart: cdStart,\n        cdEnd: cdEnd,\n        id: tokens[0 + shift]\n    }\n    const exons = decodeExons(parseInt(tokens[7 + shift]), tokens[8 + shift], tokens[9 + shift])\n    findUTRs(exons, cdStart, cdEnd)\n\n    feature.exons = exons\n\n    return feature\n\n}\n\n/**\n * Decode a UCSC \"genePredExt\" record.  refGene files are in this format.\n *\n * @param tokens\n * @param ignore\n * @returns {*}\n */\nfunction decodeGenePredExt(tokens, header) {\n\n    var shift = header.shift === undefined ? 0 : 1\n\n    if (tokens.length <= 11 + shift) return undefined\n\n    const cdStart = parseInt(tokens[5 + shift])\n    const cdEnd = parseInt(tokens[6 + shift])\n    const feature = {\n        name: tokens[11 + shift],\n        chr: tokens[1 + shift],\n        strand: tokens[2 + shift],\n        start: parseInt(tokens[3 + shift]),\n        end: parseInt(tokens[4 + shift]),\n        cdStart: cdStart,\n        cdEnd: cdEnd,\n        id: tokens[0 + shift]\n    }\n\n    const exons = decodeExons(parseInt(tokens[7 + shift]), tokens[8 + shift], tokens[9 + shift])\n    findUTRs(exons, cdStart, cdEnd)\n\n    feature.exons = exons\n\n    return feature\n}\n\n/**\n * Decode a UCSC \"refFlat\" record\n * @param tokens\n * @param ignore\n * @returns {*}\n */\nfunction decodeReflat(tokens, header) {\n\n    var shift = header.shift === undefined ? 0 : 1\n\n    if (tokens.length <= 10 + shift) return undefined\n\n    const cdStart = parseInt(tokens[6 + shift])\n    const cdEnd = parseInt(tokens[7 + shift])\n    var feature = {\n        name: tokens[0 + shift],\n        id: tokens[1 + shift],\n        chr: tokens[2 + shift],\n        strand: tokens[3 + shift],\n        start: parseInt(tokens[4 + shift]),\n        end: parseInt(tokens[5 + shift]),\n        cdStart: cdStart,\n        cdEnd: cdEnd\n    }\n\n    const exons = decodeExons(parseInt(tokens[8 + shift]), tokens[9 + shift], tokens[10 + shift])\n    findUTRs(exons, cdStart, cdEnd)\n    feature.exons = exons\n\n    return feature\n}\n\n/**\n * Decode a UCS PSL record *\n * @param tokens\n * @param header\n * @returns {DecodeError|UCSCBedFeature|undefined}\n */\nfunction decodePSL(tokens, header) {\n\n    /*\n    * 0 matches - Number of bases that match that aren't repeats\n    * 1 misMatches - Number of bases that don't match\n    * 2 repMatches - Number of bases that match but are part of repeats\n    * 3 nCount - Number of \"N\" bases\n    * 4 qNumInsert - Number of inserts in query\n    * 5 qBaseInsert - Number of bases inserted in query\n    * 6 tNumInsert - Number of inserts in target\n    * 7 tBaseInsert - Number of bases inserted in target\n    * 8 strand - \"+\" or \"-\" for query strand. For translated alignments, second \"+\"or \"-\" is for target genomic strand.\n    * 9 qName - Query sequence name\n    * 10 qSize - Query sequence size.\n    * 11 qStart - Alignment start position in query\n    * 12 qEnd - Alignment end position in query\n    * 13 tName - Target sequence name\n    * 14 tSize - Target sequence size\n    * 15 tStart - Alignment start position in target\n    * 16 tEnd - Alignment end position in target\n    * 17 blockCount - Number of blocks in the alignment (a block contains no gaps)\n    * 18 blockSizes - Comma-separated list of sizes of each block. If the query is a protein and the target the genome, blockSizes are in amino acids. See below for more information on protein query PSLs.\n    * 19 qStarts - Comma-separated list of starting positions of each block in query\n    * 20 tStarts - Comma-separated list of starting positions of each block in target\n     */\n\n\n    if (tokens.length < 21) return undefined\n\n    const chr = tokens[13]\n    const start = parseInt(tokens[15])\n    const end = parseInt(tokens[16])\n    const strand = tokens[8].charAt(0)\n    const exonCount = parseInt(tokens[17])\n    const exons = []\n    const exonStarts = tokens[20].replace(/,$/, '').split(',')\n    const exonSizes = tokens[18].replace(/,$/, '').split(',')\n\n    for (let i = 0; i < exonCount; i++) {\n        const start = parseInt(exonStarts[i])\n        const end = start + parseInt(exonSizes[i])\n        exons.push({start: start, end: end})\n    }\n\n    return new PSLFeature({chr, start, end, strand, exons, tokens})\n}\n\n\nfunction decodeExons(exonCountToken, exonStartsToken, exonEndsToken) {\n\n    const exonCount = parseInt(exonCountToken)\n    const exonStarts = exonStartsToken.replace(/,$/, '').split(',')\n    const exonEnds = exonEndsToken.replace(/,$/, '').split(',')\n    const exons = []\n    for (let i = 0; i < exonCount; i++) {\n        const start = parseInt(exonStarts[i])\n        const end = parseInt(exonEnds[i])\n        exons.push({start: start, end: end})\n    }\n    return exons\n\n}\n\nfunction findUTRs(exons, cdStart, cdEnd) {\n\n    for (let exon of exons) {\n        const end = exon.end\n        const start = exon.start\n        if (end < cdStart || start > cdEnd) {\n            exon.utr = true\n        } else {\n            if (cdStart >= start && cdStart <= end) {\n                exon.cdStart = cdStart\n            }\n            if (cdEnd >= start && cdEnd <= end) {\n                exon.cdEnd = cdEnd\n            }\n        }\n    }\n\n}\n\nfunction decodePeak(tokens, header) {\n\n    var tokenCount, chr, start, end, strand, name, score, qValue, signal, pValue\n\n    tokenCount = tokens.length\n    if (tokenCount < 9) {\n        return undefined\n    }\n\n    chr = tokens[0]\n    start = parseInt(tokens[1])\n    end = parseInt(tokens[2])\n    name = tokens[3]\n    score = Number(tokens[4])\n    strand = tokens[5].trim()\n    signal = Number(tokens[6])\n    pValue = Number(tokens[7])\n    qValue = Number(tokens[8])\n\n    if (score === 0) score = signal\n\n    return {\n        chr: chr, start: start, end: end, name: name, score: score, strand: strand, signal: signal,\n        pValue: pValue, qValue: qValue\n    }\n}\n\nfunction decodeBedGraph(tokens, header) {\n\n    var chr, start, end, value\n\n    if (tokens.length <= 3) return undefined\n\n    chr = tokens[0]\n    start = parseInt(tokens[1])\n    end = parseInt(tokens[2])\n    value = Number(tokens[3])\n    const feature = {chr: chr, start: start, end: end, value: value}\n\n    // Optional extra columns\n    if (header) {\n        let colorColumn = header.colorColumn\n        if (colorColumn && colorColumn < tokens.length) {\n            feature.color = IGVColor.createColorString(tokens[colorColumn])\n        }\n    }\n\n    return feature\n}\n\nfunction decodeWig(tokens, header) {\n\n    const wig = header.wig\n\n    if (wig && wig.format === \"fixedStep\") {\n        const ss = (wig.index * wig.step) + wig.start\n        const ee = ss + wig.span\n        const value = Number(tokens[0])\n        ++(wig.index)\n        return isNaN(value) ? null : {chr: wig.chrom, start: ss, end: ee, value: value}\n    } else if (wig && wig.format === \"variableStep\") {\n\n        if (tokens.length < 2) return null\n        const ss = parseInt(tokens[0], 10) - 1\n        const ee = ss + wig.span\n        const value = Number(tokens[1])\n        return isNaN(value) ? null : {chr: wig.chrom, start: ss, end: ee, value: value}\n\n    } else {\n        return decodeBedGraph(tokens)\n    }\n}\n\nfunction decodeSNP(tokens, header) {\n\n    if (tokens.length < 6) return undefined\n\n    const autoSql = [\n        'bin',\n        'chr',\n        'start',\n        'end',\n        'name',\n        'score',\n        'strand',\n        'refNCBI',\n        'refUCSC',\n        'observed',\n        'molType',\n        'class',\n        'valid',\n        'avHet',\n        'avHetSE',\n        'func',\n        'locType',\n        'weight',\n        'exceptions',\n        'submitterCount',\n        'submitters',\n        'alleleFreqCount',\n        'alleles',\n        'alleleNs',\n        'alleleFreqs',\n        'bitfields'\n    ]\n\n\n    const feature = {\n        chr: tokens[1],\n        start: Number.parseInt(tokens[2]),\n        end: Number.parseInt(tokens[3]),\n        name: tokens[4],\n        score: Number.parseInt(tokens[5])\n    }\n\n    const n = Math.min(tokens.length, autoSql.length)\n    for (let i = 6; i < n; i++) {\n        feature[autoSql[i]] = tokens[i]\n    }\n    return feature\n\n}\n\nclass UCSCBedFeature {\n\n    constructor(properties) {\n        Object.assign(this, properties)\n    }\n\n    getAttributeValue(attributeName) {\n        if (this.hasOwnProperty(attributeName)) {\n            return this[attributeName]\n        } else if (this.attributes) {\n            return this.attributes[attributeName]\n        }\n    }\n}\n\n/*\n* 0 matches - Number of bases that match that aren't repeats\n* 1 misMatches - Number of bases that don't match\n* 2 repMatches - Number of bases that match but are part of repeats\n* 3 nCount - Number of \"N\" bases\n* 4 qNumInsert - Number of inserts in query\n* 5 qBaseInsert - Number of bases inserted in query\n* 6 tNumInsert - Number of inserts in target\n* 7 tBaseInsert - Number of bases inserted in target\n* 8 strand - \"+\" or \"-\" for query strand. For translated alignments, second \"+\"or \"-\" is for target genomic strand.\n* 9 qName - Query sequence name\n* 10 qSize - Query sequence size.\n* 11 qStart - Alignment start position in query\n* 12 qEnd - Alignment end position in query\n* 13 tName - Target sequence name\n* 14 tSize - Target sequence size\n* 15 tStart - Alignment start position in target\n* 16 tEnd - Alignment end position in target\n* 17 blockCount - Number of blocks in the alignment (a block contains no gaps)\n* 18 blockSizes - Comma-separated list of sizes of each block. If the query is a protein and the target the genome, blockSizes are in amino acids. See below for more information on protein query PSLs.\n* 19 qStarts - Comma-separated list of starting positions of each block in query\n* 20 tStarts - Comma-separated list of starting positions of each block in target\n */\n\nclass PSLFeature {\n\n\n    constructor(properties) {\n        Object.assign(this, properties)\n    }\n\n    get score() {\n        const tokens = this.tokens\n        const match = parseInt(tokens[0])\n        const repMatch = parseInt(tokens[2])\n        const misMatch = parseInt(tokens[1])\n        const qGapCount = parseInt(tokens[4])\n        const tGapCount = parseInt(tokens[6])\n        const qSize = parseInt(tokens[10])\n        return Math.floor((1000 * (match + repMatch - misMatch - qGapCount - tGapCount)) / qSize)\n    }\n\n    get matches() {\n        return this.tokens[0]\n    }\n\n    get misMatches() {\n        return this.tokens[1]\n    }\n\n    get repMatches() {\n        return this.tokens[2]\n    }\n\n    get nCount() {\n        return this.tokens[3]\n    }\n\n    get qNumInsert() {\n        return this.tokens[4]\n    }\n\n    get qBaseInsert() {\n        return this.tokens[5]\n    }\n\n    get tNumInsert() {\n        return this.tokens[6]\n    }\n\n    get tBaseInsert() {\n        return this.tokens[7]\n\n    }\n\n    popupData() {\n        return [\n            {name: 'chr', value: this.chr},\n            {name: 'start', value: this.start + 1},\n            {name: 'end', value: this.end},\n            {name: 'strand', value: this.strand},\n            {name: 'score', value: this.score},\n            {name: 'match', value: this.matches},\n            {name: \"mis-match\", value: this.misMatches},\n            {name: \"rep. match\", value: this.repMatches},\n            {name: \"N's\", value: this.nCount},\n            {name: 'Q gap count', value: this.qNumInsert},\n            {name: 'Q gap bases', value: this.qBaseInsert},\n            {name: 'T gap count', value: this.tNumInsert},\n            {name: 'T gap bases', value: this.tBaseInsert},\n        ]\n    }\n\n}\n\nexport {\n    decodeBed, decodeBedGraph, decodeGenePred, decodeGenePredExt, decodePeak, decodeReflat, decodeRepeatMasker,\n    decodeSNP, decodeWig, decodePSL\n}\n\n","function decodeFusionJuncSpan(tokens, header) {\n\n    /*\n     Format:\n\n     0       #scaffold\n     1       fusion_break_name\n     2       break_left\n     3       break_right\n     4       num_junction_reads\n     5       num_spanning_frags\n     6       spanning_frag_coords\n\n     0       B3GNT1--NPSR1\n     1       B3GNT1--NPSR1|2203-10182\n     2       2203\n     3       10182\n     4       189\n     5       1138\n     6       1860-13757,1798-13819,1391-18127,1443-17174,...\n\n     */\n\n\n    if (tokens.length < 7) return undefined\n\n    var chr = tokens[0]\n    var fusion_name = tokens[1]\n    var junction_left = parseInt(tokens[2])\n    var junction_right = parseInt(tokens[3])\n    var num_junction_reads = parseInt(tokens[4])\n    var num_spanning_frags = parseInt(tokens[5])\n\n    var spanning_frag_coords_text = tokens[6]\n\n    var feature = {\n        chr: chr,\n        name: fusion_name,\n        junction_left: junction_left,\n        junction_right: junction_right,\n        num_junction_reads: num_junction_reads,\n        num_spanning_frags: num_spanning_frags,\n        spanning_frag_coords: [],\n\n        start: -1,\n        end: -1\n    } // set start and end later based on min/max of span coords\n\n    var min_coord = junction_left\n    var max_coord = junction_right\n\n    if (num_spanning_frags > 0) {\n\n        var coord_pairs = spanning_frag_coords_text.split(',')\n\n        for (var i = 0; i < coord_pairs.length; i++) {\n            var split_coords = coord_pairs[i].split('-')\n\n            var span_left = split_coords[0]\n            var span_right = split_coords[1]\n\n            if (span_left < min_coord) {\n                min_coord = span_left\n            }\n            if (span_right > max_coord) {\n                max_coord = span_right\n            }\n            feature.spanning_frag_coords.push({left: span_left, right: span_right})\n\n        }\n    }\n\n    feature.start = min_coord\n    feature.end = max_coord\n\n\n    return feature\n\n}\n\nexport {decodeFusionJuncSpan}","function decodeGtexGWAS(tokens, header) {\n    //chrom\tchromStart\tchromEnd\tStrongest SNP-risk allele\tDisease/Phenotype\tP-value\tOdds ratio or beta\tPUBMEDID\n    //1\t1247493\t1247494\trs12103-A\tInflammatory bowel disease\t8.00E-13\t1.1\t23128233\n\n    const tokenCount = tokens.length\n    if (tokenCount < 7) {\n        return null\n    }\n    const feature = {\n        chr: tokens[0],\n        start: parseInt(tokens[1]) - 1,\n        end: parseInt(tokens[2]),\n        'Strongest SNP-risk allele': tokens[3],\n        'Disease/Phenotype': tokens[4],\n        'P-value': tokens[5],\n        'Odds ratio or beta': tokens[6],\n    }\n    if (tokens.length > 6) {\n        feature['PUBMEDID'] = `<a target = \"blank\" href = \"https://www.ncbi.nlm.nih.gov/pubmed/${tokens[7]}\">${tokens[7]}</a>`\n    }\n    return feature\n}\n\nexport {decodeGtexGWAS}","/**\n * Decode a custom columnar format.  Required columns are 'chr' and 'start'\n *\n * @param tokens\n * @param ignore\n * @returns decoded feature, or null if this is not a valid record\n */\nfunction decodeCustom(tokens, header) {\n\n    const format = header.customFormat\n\n    if (tokens.length < format.fields.length) return undefined\n\n    const coords = format.coords || 0\n\n    const chr = tokens[format.chr]\n    const start = parseInt(tokens[format.start]) - coords\n    const end = format.end !== undefined ? parseInt(tokens[format.end]) : start + 1\n\n    const feature = {chr: chr, start: start, end: end}\n\n    if (format.fields) {\n        format.fields.forEach(function (field, index) {\n\n            if (index !== format.chr &&\n                index !== format.start &&\n                index !== format.end) {\n\n                feature[field] = tokens[index]\n            }\n        })\n    }\n\n    return feature\n\n}\n\n\n// function expandFormat(format) {\n//     const fields = format.fields;\n//     const keys = ['chr', 'start', 'end'];\n//     for (let i = 0; i < fields.length; i++) {\n//         for (let key of keys) {\n//             if (key === fields[i]) {\n//                 format[key] = i;\n//             }\n//         }\n//     }\n//     return format;\n// }\n\nexport {decodeCustom}","/**\n * Decode a gcnv record, a bed style format encoding copy number variation\n *\n * @param tokens\n * @param header\n */\n\nfunction decodeGcnv(tokens, header) {\n\n    const columnNames = header.columnNames\n    if (!columnNames) {\n        throw Error(\"Sample names are not defined.   Missing column headers?\")\n    }\n    const sampleCount = columnNames.length - 3\n\n    const chr = tokens[0]\n    const start = parseInt(tokens[1])\n    const end = parseInt(tokens[2])\n    const values = tokens.slice(3).map(Number)\n\n    if (values.length == sampleCount) {\n        return {\n            chr: chr,\n            start: start,\n            end: end,\n            values: values,\n        }\n    } else {\n        // TODO Throw error?\n        console.warn(`${chr}:${start}-${end} row contains ${values.length} sample columns instead of the expected ${sampleCount} columns. Skipping...`)\n        return undefined\n    }\n}\n\nexport {decodeGcnv}\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport * as TrackUtils from '../util/trackUtils.js'\nimport {decodeBedpe, decodeBedpeDomain, fixBedPE} from './decode/bedpe.js'\nimport {decodeInteract} from \"./decode/interact.js\"\nimport {\n    decodeBed,\n    decodeBedGraph,\n    decodeGenePred,\n    decodeGenePredExt,\n    decodePeak,\n    decodeReflat,\n    decodeRepeatMasker,\n    decodeSNP,\n    decodeWig\n} from \"./decode/ucsc.js\"\nimport {decodeGFF3, decodeGTF} from \"./gff/gff.js\"\nimport {decodeFusionJuncSpan} from \"./decode/fusionJuncSpan.js\"\nimport {decodeGtexGWAS} from \"./decode/gtexGWAS.js\"\nimport {decodeCustom} from \"./decode/custom.js\"\nimport {decodeGcnv} from \"../gcnv/gcnvDecoder.js\"\nimport DecodeError from \"./decode/decodeError.js\"\n\n/**\n *  Parser for column style (tab delimited, etc) text file formats (bed, gff, vcf, etc).\n *\n *\n */\n\n\n/**\n * Return a parser for the given file format.\n */\nclass FeatureParser {\n\n    constructor(config) {\n\n        this.config = config\n        this.header = {}\n        if (config.nameField) {\n            this.header.nameField = config.nameField\n        }\n\n        this.skipRows = 0   // The number of fixed header rows to skip.  Override for specific types as needed\n\n        if (config.decode) {\n            this.decode = config.decode\n            this.delimiter = config.delimiter || \"\\t\"\n        } else if (config.format) {\n            this.header.format = config.format.toLowerCase()\n            this.setDecoder(this.header.format)\n        }\n\n        if (!this.delimiter) {\n            this.delimiter = \"\\t\"\n        }\n    }\n\n    /**\n     * Parse metadata from the file.   A variety of conventions are in use to supply metadata about file contents\n     * through header lines (e.g. 'track') and # directives. This method unifies metadata as properties of a\n     * 'header' object.\n     *\n     * @param data\n     * @returns {{}}\n     */\n    async parseHeader(dataWrapper) {\n\n        let header = this.header\n        let columnNames\n        let line\n        while ((line = await dataWrapper.nextLine()) !== undefined) {\n            if (line.startsWith(\"track\") || line.startsWith(\"#track\")) {\n                let h = parseTrackLine(line)\n                Object.assign(header, h)\n            } else if (line.startsWith(\"browser\")) {\n                // UCSC line, currently ignored\n            } else if (line.startsWith(\"#columns\")) {\n                let h = parseColumnsDirective(line)\n                Object.assign(header, h)\n            } else if (line.startsWith(\"##gff-version 3\")) {\n                header.format = \"gff3\"\n            } else if (line.startsWith(\"#gffTags\")) {\n                header.gffTags = true\n            } else if (line.startsWith(\"fixedStep\") || line.startsWith(\"variableStep\")) {\n                // Wig directives -- we are in the data section\n                break\n            } else if (line.startsWith(\"#\")) {\n                const tokens = line.split(this.delimiter || \"\\t\")\n                if (tokens.length > 1) {\n                    columnNames = tokens   // Possible column names\n                }\n            } else {\n                // All directives that could change the format, and thus decoder, should have been read by now.\n                this.setDecoder(header.format)\n\n                // If the line can be parsed as a feature assume we are beyond the header, if any\n                const tokens = line.split(this.delimiter || \"\\t\")\n                try {\n                    const tmpHeader = Object.assign({columnNames}, header)\n                    if (this.decode(tokens, tmpHeader)) {\n                        break\n                    } else {\n                        if (tokens.length > 1) {\n                            columnNames = tokens // possible column names\n                        }\n                    }\n                } catch (e) {\n                    // Not a feature\n                    if (tokens.length > 1) {\n                        columnNames = tokens // possible column names\n                    }\n                }\n            }\n        }\n\n        if (columnNames) {\n            header.columnNames = columnNames\n            for (let n = 0; n < columnNames.length; n++) {\n                if (columnNames[n] === \"color\" || columnNames[n] === \"colour\") {\n                    header.colorColumn = n\n                } else if (columnNames[n] === \"thickness\") {\n                    header.thicknessColumn = n\n                }\n            }\n        }\n\n        this.header = header    // Directives might be needed for parsing lines\n        return header\n    }\n\n    async parseFeatures(dataWrapper) {\n\n        const allFeatures = []\n        const decode = this.decode\n        const format = this.header.format\n        const delimiter = this.delimiter || \"\\t\"\n        let i = 0\n        let errorCount = 0\n        let line\n        while ((line = await dataWrapper.nextLine()) !== undefined) {\n            i++\n            if (i <= this.skipRows) continue\n\n            if (!line || line.startsWith(\"track\") || line.startsWith(\"#\") || line.startsWith(\"browser\")) {\n                continue\n            } else if (format === \"wig\" && line.startsWith(\"fixedStep\")) {\n                this.header.wig = parseFixedStep(line)\n                continue\n            } else if (format === \"wig\" && line.startsWith(\"variableStep\")) {\n                this.header.wig = parseVariableStep(line)\n                continue\n            }\n\n            const tokens = line.split(delimiter)\n            if (tokens.length < 1) {\n                continue\n            }\n\n            const feature = decode(tokens, this.header)\n\n            if (feature instanceof DecodeError) {\n                errorCount++\n                if (errorCount > 0) {\n                    console.error(`Error parsing line '${line}': ${feature.message}`)\n                }\n                continue\n            }\n\n            if (feature) {\n                allFeatures.push(feature)\n            }\n        }\n\n        // Special hack for bedPE\n        if (decode === decodeBedpe) {\n            fixBedPE(allFeatures)\n        }\n\n        return allFeatures\n\n    }\n\n    setDecoder(format) {\n\n        switch (format) {\n            case \"narrowpeak\":\n            case \"broadpeak\":\n            case \"regionpeak\":\n            case \"peaks\":\n                this.decode = decodePeak\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"bedgraph\":\n                this.decode = decodeBedGraph\n                this.delimiter = /\\s+/\n                break\n            case \"wig\":\n                this.decode = decodeWig\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"gff3\" :\n            case \"gff\":\n                this.decode = decodeGFF3\n                this.delimiter = \"\\t\"\n                break\n            case \"gtf\" :\n                this.decode = decodeGTF\n                this.delimiter = \"\\t\"\n                break\n            case \"fusionjuncspan\":\n                // bhaas, needed for FusionInspector view\n                this.decode = decodeFusionJuncSpan\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"gtexgwas\":\n                this.skipRows = 1\n                this.decode = decodeGtexGWAS\n                this.delimiter = \"\\t\"\n                break\n            case \"refflat\":\n                this.decode = decodeReflat\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"genepred\":\n                this.decode = decodeGenePred\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"genepredext\":\n                this.decode = decodeGenePredExt\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"ensgene\":\n                this.decode = decodeGenePred\n                this.header.shift = 1\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"refgene\":\n                this.decode = decodeGenePredExt\n                this.delimiter = this.config.delimiter || /\\s+/\n                this.header.shift = 1\n                break\n            case \"bed\":\n                this.decode = decodeBed\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"bedpe\":\n            case \"hiccups\":\n                this.decode = decodeBedpe\n                this.delimiter = this.config.delimiter || \"\\t\"\n                break\n            case \"bedpe-domain\":\n                this.decode = decodeBedpeDomain\n                this.headerLine = true\n                this.delimiter = this.config.delimiter || \"\\t\"\n                break\n            case \"bedpe-loop\":\n                this.decode = decodeBedpe\n                this.delimiter = this.config.delimiter || \"\\t\"\n                this.header = {colorColumn: 7}\n                break\n            case \"interact\":\n                this.decode = decodeInteract\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"snp\":\n                this.decode = decodeSNP\n                this.delimiter = \"\\t\"\n                break\n            case \"rmsk\":\n                this.decode = decodeRepeatMasker\n                this.delimiter = \"\\t\"\n                break\n            case \"gcnv\":\n                this.decode = decodeGcnv\n                this.delimiter = \"\\t\"\n                break\n            default:\n                const customFormat = TrackUtils.getFormat(format)\n                if (customFormat !== undefined) {\n                    this.decode = decodeCustom\n                    this.header.customFormat = customFormat\n                    this.delimiter = customFormat.delimiter || \"\\t\"\n                } else {\n                    this.decode = decodeBed\n                    this.delimiter = this.config.delimiter || /\\s+/\n                }\n        }\n\n    }\n}\n\nfunction parseTrackLine(line) {\n\n    const properties = {}\n    const tokens = line.split(/(?:\")([^\"]+)(?:\")|([^\\s\"]+)(?=\\s+|$)/g)\n\n    // Clean up tokens array\n    let curr\n    const tmp = []\n    for (let tk of tokens) {\n        if (!tk || tk.trim().length === 0) continue\n        if (tk.endsWith(\"=\")) {\n            curr = tk\n        } else if (curr) {\n            tmp.push(curr + tk)\n            curr = undefined\n        } else {\n            tmp.push(tk)\n        }\n    }\n\n    for (let str of tmp) {\n        if (!str) return\n        var kv = str.split('=', 2)\n        if (kv.length === 2) {\n            const key = kv[0].trim()\n            const value = kv[1].trim()\n            if (properties.hasOwnProperty(key)) {\n                let currentValue = properties[key]\n                if (Array.isArray(currentValue)) {\n                    currentValue.push(value)\n                } else {\n                    properties[key] = [currentValue, value]\n                }\n            } else {\n                properties[key] = value\n            }\n        }\n    }\n    if (\"interact\" == properties[\"type\"]) {\n        properties[\"format\"] = \"interact\"\n    } else if (\"gcnv\" === properties[\"type\"]) {\n        properties[\"format\"] = \"gcnv\"\n    }\n    return properties\n}\n\nfunction parseColumnsDirective(line) {\n\n    let properties = {}\n    let t1 = line.split(/\\s+/)\n\n    if (t1.length === 2) {\n        let t2 = t1[1].split(\";\")\n        t2.forEach(function (keyValue) {\n            let t = keyValue.split(\"=\")\n            if (t[0] === \"color\") {\n                properties.colorColumn = Number.parseInt(t[1]) - 1\n            } else if (t[0] === \"thickness\") {\n                properties.thicknessColumn = Number.parseInt(t[1]) - 1\n            }\n        })\n    }\n\n    return properties\n}\n\nfunction parseFixedStep(line) {\n    const tokens = line.split(/\\s+/)\n    const chrom = tokens[1].split(\"=\")[1]\n    const start = parseInt(tokens[2].split(\"=\")[1], 10) - 1\n    const step = parseInt(tokens[3].split(\"=\")[1], 10)\n    const span = (tokens.length > 4) ? parseInt(tokens[4].split(\"=\")[1], 10) : 1\n    return {format: \"fixedStep\", chrom, start, step, span, index: 0}\n}\n\nfunction parseVariableStep(line) {\n    const tokens = line.split(/\\s+/)\n    const chrom = tokens[1].split(\"=\")[1]\n    const span = tokens.length > 2 ? parseInt(tokens[2].split(\"=\")[1], 10) : 1\n    return {format: \"variableStep\", chrom, span}\n}\n\nconst spaceDelimited = new Set([\n    \"narrowpeak\",\n    \"broadpeak\",\n    \"regionpeak\",\n    \"peaks\",\n    \"fusionjuncspan\",\n    \"bedgraph\",\n    \"wig\",\n    \"refflat\",\n    \"genepred\",\n    \"genepredext\",\n    \"ensgene\",\n    \"refgene\",\n    \"bed\",\n    \"interact\"\n])\n\nexport default FeatureParser\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2018 Regents of the University of California\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {isSimpleType} from \"./util/igvUtils.js\"\nimport {FeatureUtils, FileUtils, StringUtils} from \"../node_modules/igv-utils/src/index.js\"\n\nconst DEFAULT_COLOR = 'rgb(150,150,150)'\n\nconst fixColor = (colorString) => {\n    if (StringUtils.isString(colorString)) {\n        return (colorString.indexOf(\",\") > 0 && !(colorString.startsWith(\"rgb(\") || colorString.startsWith(\"rgba(\"))) ?\n            `rgb(${colorString})` : colorString\n    } else {\n        return colorString\n    }\n}\n\n/**\n * A collection of properties and methods shared by all (or most) track types.\n *\n * @param config\n * @param browser\n * @constructor\n */\nclass TrackBase {\n\n    static defaults = {\n        height: 50,\n        autoHeight: false,\n        visibilityWindow: undefined,   // Identifies property that should be copied from config\n        color: undefined,  // Identifies property that should be copied from config\n        altColor: undefined,  // Identifies property that should be copied from config\n        supportHiDPI: true\n    }\n\n    constructor(config, browser) {\n        this.browser = browser\n        this.init(config)\n    }\n\n    /**\n     * Initialize track properties from the config object.  This method is typically overriden in subclasses, which\n     * will call this implementation as super.init(config).\n     *\n     * @param config\n     */\n    init(config) {\n\n        this.config = config\n\n        if (config.displayMode) {\n            config.displayMode = config.displayMode.toUpperCase()\n        }\n\n        // Set default properties\n        const defaults = Object.assign({}, TrackBase.defaults)\n        if(this.constructor.defaults) {\n            for(let key of Object.keys(this.constructor.defaults)) {\n                defaults[key] = this.constructor.defaults[key]\n            }\n        }\n        for(let key of Object.keys(defaults)) {\n            this[key] = config.hasOwnProperty(key) ? config[key] : defaults[key]\n            if(key === 'color' || key === 'altColor') {\n                this[key] = fixColor(this[key])\n            }\n        }\n\n        if (config.name || config.label) {\n            this.name = config.name || config.label\n        } else if (FileUtils.isFile(config.url)) {\n            this.name = config.url.name\n        } else if (StringUtils.isString(config.url) && !config.url.startsWith(\"data:\")) {\n            this.name = FileUtils.getFilename(config.url)\n        }\n\n        this.url = config.url\n        if(this.config.type) this.type = this.config.type\n        this.id = this.config.id === undefined ? this.name : this.config.id\n        this.order = config.order\n        this.autoscaleGroup = config.autoscaleGroup\n        this.removable = config.removable === undefined ? true : config.removable      // Defaults to true\n        this.minHeight = config.minHeight || Math.min(25, this.height)\n        this.maxHeight = config.maxHeight || Math.max(1000, this.height)\n\n        if (config.onclick) {\n            this.onclick = config.onclick\n            config.onclick = undefined   // functions cannot be saved in sessions, clear it here.\n        }\n\n        if (config.description) {\n            // Override description -- displayed when clicking on track label.  Convert to function if neccessary\n            if (typeof config.description === 'function') {\n                this.description = config.description\n            } else {\n                this.description = () => config.description\n            }\n        }\n\n        // Support for mouse hover text.  This can be expensive, off by default.\n        // this.hoverText = function(clickState) => return tool tip text\n        if (config.hoverTextFields) {\n            this.hoverText = hoverText.bind(this)\n        } else if (typeof this.config.hoverText === 'function') {\n            this.hoverText = this.config.hoverText\n        }\n    }\n\n    get name() {\n        return this._name\n    }\n\n    set name(name) {\n        this._name = name\n        if (this.trackView) {\n            this.trackView.setTrackLabelName(name)\n        }\n    }\n\n    /**\n     * Update track properties from the config object.\n     *\n     * @param config\n     */\n    updateConfig(config) {\n        this.init(config)\n    }\n\n    clearCachedFeatures() {\n        if (this.trackView) {\n            this.trackView.clearCachedFeatures()\n        }\n    }\n\n    updateViews() {\n        if (this.trackView) {\n            this.trackView.updateViews()\n        }\n    }\n\n    /**\n     * Used to create session object for bookmarking, sharing.  Only simple property values (string, number, boolean)\n     * are saved.\n     */\n    getState() {\n\n        const jsonable = (v) => !(v === undefined || typeof v === 'function' || v instanceof File || v instanceof Promise)\n\n        // Create copy of config, minus transient properties (convention is name starts with '_').  Also, all\n        // function properties are transient as they cannot be saved in json\n        const state = {}\n        for (let key of Object.keys(this.config)) {\n            if (!key.startsWith(\"_\") && jsonable(this.config[key])) {\n                state[key] = this.config[key]\n            }\n        }\n\n        // Update original config values with any changes\n        for (let key of Object.keys(state)) {\n            if (key.startsWith(\"_\")) continue   // transient property\n            const value = this[key]\n            if (value && (isSimpleType(value) || typeof value === \"boolean\" || key === \"metadata\")) {\n                state[key] = value\n            }\n        }\n\n        // If user has changed other properties from defaults update state.\n        const defs = TrackBase.defaults\n        if (this.constructor.defaults) {\n            for (let key of Object.keys(this.constructor.defaults)) {\n                defs[key] = this.constructor.defaults[key]\n            }\n        }\n        for (let key of Object.keys(defs)) {\n            if (undefined !== this[key] && defs[key] !== this[key]) {\n                state[key] = this[key]\n            }\n        }\n\n        // Flatten dataRange if present\n        if (!this.autoscale && this.dataRange) {\n            state.min = this.dataRange.min\n            state.max = this.dataRange.max\n        }\n\n        return state\n    }\n\n    get supportsWholeGenome() {\n        return this.config.supportsWholeGenome === true\n    }\n\n    /**\n     * Does the track support sample names.  Current sample aware tracks include VCF (with genotypes), MUT, MAF, and SEG\n     * @returns {boolean}\n     */\n    hasSamples() {\n        return false\n    }\n\n    getGenomeId() {\n        return this.browser.genome ? this.browser.genome.id : undefined\n    }\n\n    /**\n     * Set certain track properties, usually from a \"track\" line.  Not all UCSC properties are supported.\n     *\n     * Track configuration settings have precendence over track line properties, so if both are present ignore the\n     * track line.\n     *\n     * @param properties\n     */\n    setTrackProperties(properties) {\n\n        if (this.disposed) return   // This track was removed during async load\n\n        const tracklineConfg = {}\n        let tokens\n        for (let key of Object.keys(properties)) {\n            switch (key.toLowerCase()) {\n                case \"usescore\":\n                    tracklineConfg.useScore = (\n                        properties[key] === 1 || properties[key] === \"1\" || properties[key] === \"on\" || properties[key] === true)\n                    break\n                case \"visibility\":\n                    //0 - hide, 1 - dense, 2 - full, 3 - pack, and 4 - squish\n                    switch (properties[key]) {\n                        case \"2\":\n                        case \"3\":\n                        case \"pack\":\n                        case \"full\":\n                            tracklineConfg.displayMode = \"EXPANDED\"\n                            break\n                        case \"4\":\n                        case \"squish\":\n                            tracklineConfg.displayMode = \"SQUISHED\"\n                            break\n                        case \"1\":\n                        case \"dense\":\n                            tracklineConfg.displayMode = \"COLLAPSED\"\n                    }\n                    break\n                case \"color\":\n                case \"altcolor\":\n                    tracklineConfg[key] = properties[key].startsWith(\"rgb(\") ? properties[key] : \"rgb(\" + properties[key] + \")\"\n                    break\n                case \"featurevisiblitywindow\":\n                case \"visibilitywindow\":\n                    tracklineConfg.visibilityWindow = Number.parseInt(properties[key])\n                    break\n                case \"maxheightpixels\":\n                    tokens = properties[key].split(\":\")\n                    if (tokens.length === 3) {\n                        tracklineConfg.minHeight = Number.parseInt(tokens[2])\n                        tracklineConfg.height = Number.parseInt(tokens[1])\n                        tracklineConfg.maxHeight = Number.parseInt(tokens[0])\n                    }\n                    break\n                case \"viewlimits\":\n                    if (!this.config.autoscale) {   // autoscale in the config has precedence\n                        tokens = properties[key].split(\":\")\n                        let min = 0\n                        let max\n                        if (tokens.length == 1) {\n                            max = Number(tokens[0])\n                        } else if (tokens.length == 2) {\n                            min = Number(tokens[0])\n                            max = Number(tokens[1])\n                        }\n                        tracklineConfg.autoscale = false\n                        tracklineConfg.dataRange = {min, max}\n                        this.viewLimitMin = min\n                        this.viewLimitMax = max\n                    }\n                case \"name\":\n                    tracklineConfg[key] = properties[key]\n                    break\n                case \"url\":\n                    tracklineConfg[\"infoURL\"] = properties[key]\n                    break\n                case \"type\":\n                    const v = properties[key]\n                    if (UCSCTypeMappings.has(v)) {\n                        tracklineConfg[key] = UCSCTypeMappings.get(v)\n                    } else {\n                        tracklineConfg[key] = v\n                    }\n                    break\n                case \"graphtype\":\n                    tracklineConfg[\"graphType\"] = properties[key]\n                    break\n                default:\n                    tracklineConfg[key] = properties[key]\n            }\n        }\n\n        // Track configuration objects have precedence over track line properties in general.  The \"name\" property\n        // is an exception if it was derived and not explicitly entered (that is derived from the web app from filename).\n        for (let key of Object.keys(tracklineConfg)) {\n\n            if (!this.config.hasOwnProperty(key) || (key === \"name\" && this.config._derivedName)) {\n                let value = tracklineConfg[key]\n                if (\"true\" === value) value = true\n                if (\"false\" === value) value = false\n\n                this[key] = value\n                if (key === \"height\" && this.trackView) {\n                    try {\n                        const h = Number.parseInt(value)\n                        this.trackView.setTrackHeight(h)\n                    } catch (e) {\n                        console.error(e)\n                    }\n                }\n            }\n        }\n    }\n\n    /**\n     * Return the features clicked over.  Default implementation assumes an array of features and only considers\n     * the genomic location.   Overriden by most subclasses.\n     *\n     * @param clickState\n     * @param features\n     * @returns {[]|*[]}\n     */\n    clickedFeatures(clickState) {\n\n        // We use the cached features rather than method to avoid async load.  If the\n        // feature is not already loaded this won't work,  but the user wouldn't be mousing over it either.\n        const features = clickState.viewport.cachedFeatures\n\n        if (!features || !Array.isArray(features) || features.length === 0) {\n            return []\n        }\n\n        const genomicLocation = clickState.genomicLocation\n\n        // When zoomed out we need some tolerance around genomicLocation\n        const tolerance = (clickState.referenceFrame.bpPerPixel > 0.2) ? 3 * clickState.referenceFrame.bpPerPixel : 0.2\n        const ss = genomicLocation - tolerance\n        const ee = genomicLocation + tolerance\n        return (FeatureUtils.findOverlapping(features, ss, ee))\n    }\n\n    /**\n     * Default popup text function -- just extracts string and number properties in random order.\n     * @param feature\n     * @returns {Array}\n     */\n    extractPopupData(feature, genomeId) {\n\n        const filteredProperties = new Set(['row', 'color', 'chr', 'start', 'end', 'cdStart', 'cdEnd', 'strand', 'alpha'])\n        const data = []\n\n        let alleles, alleleFreqs\n        for (let property in feature) {\n\n            if (feature.hasOwnProperty(property) &&\n                !filteredProperties.has(property) &&\n                isSimpleType(feature[property])) {\n\n                let value = feature[property]\n                data.push({name: StringUtils.capitalize(property), value: value})\n\n                if (property === \"alleles\") {\n                    alleles = feature[property]\n                } else if (property === \"alleleFreqs\") {\n                    alleleFreqs = feature[property]\n                }\n            }\n        }\n\n        if (alleles && alleleFreqs) {\n\n            if (alleles.endsWith(\",\")) {\n                alleles = alleles.substr(0, alleles.length - 1)\n            }\n            if (alleleFreqs.endsWith(\",\")) {\n                alleleFreqs = alleleFreqs.substr(0, alleleFreqs.length - 1)\n            }\n\n            let a = alleles.split(\",\")\n            let af = alleleFreqs.split(\",\")\n            if (af.length > 1) {\n                let b = []\n                for (let i = 0; i < af.length; i++) {\n                    b.push({a: a[i], af: Number(af[i])})\n                }\n                b.sort(function (x, y) {\n                    return x.af - y.af\n                })\n\n                let ref = b[b.length - 1].a\n                if (ref.length === 1) {\n                    for (let i = b.length - 2; i >= 0; i--) {\n                        let alt = b[i].a\n                        if (alt.length === 1) {\n                            if (!genomeId) genomeId = this.getGenomeId()\n                            const cravatLink = TrackBase.getCravatLink(feature.chr, feature.start + 1, ref, alt, genomeId)\n                            console.log(cravatLink)\n                            if (cravatLink) {\n                                data.push('<hr/>')\n                                data.push({html: cravatLink})\n                                data.push('<hr/>')\n                            }\n                        }\n                    }\n                }\n            }\n        }\n\n        if (feature.attributes) {\n            for (let key of Object.keys(feature.attributes)) {\n                data.push({name: key, value: feature.attributes[key]})\n            }\n        }\n\n        // final chr position\n        let posString = `${feature.chr}:${StringUtils.numberFormatter(feature.start + 1)}-${StringUtils.numberFormatter(feature.end)}`\n        if (feature.strand) {\n            posString += ` (${feature.strand})`\n        }\n\n        data.push({name: 'Location', value: posString})\n\n        return data\n\n    }\n\n\n    /**\n     * Default track description -- displayed on click of track label.  This can be overriden in the track\n     * configuration, or in subclasses.\n     */\n    description() {\n\n        const wrapKeyValue = (k, v) => `<div class=\"igv-track-label-popup-shim\"><b>${k}: </b>${v}</div>`\n\n        let str = '<div class=\"igv-track-label-popup\">'\n        if (this.url) {\n            if (FileUtils.isFile(this.url)) {\n                str += wrapKeyValue('Filename', this.url.name)\n            } else {\n                str += wrapKeyValue('URL', this.url)\n            }\n        } else {\n            str = this.name\n        }\n        if (this.config) {\n            if (this.config.metadata) {\n                for (let key of Object.keys(this.config.metadata)) {\n                    const value = this.config.metadata[key]\n                    str += wrapKeyValue(key, value)\n                }\n            }\n\n            // Add any config properties that are capitalized\n            for (let key of Object.keys(this.config)) {\n                if (key.startsWith(\"_\")) continue   // transient property\n                let first = key.substr(0, 1)\n                if (first !== first.toLowerCase()) {\n                    const value = this.config[key]\n                    if (value && isSimpleType(value)) {\n                        str += wrapKeyValue(key, value)\n                    }\n                }\n            }\n\n        }\n        str += '</div>'\n        return str\n    }\n\n    /**\n     * Return color for a specific feature of this track.  This default implementation is overriden by subclasses*\n     * @param f\n     * @returns {*|string|string}\n     */\n    getColorForFeature(f) {\n        return (typeof this.color === \"function\") ? this.color(feature) : this.color\n    }\n\n    /**\n     * Track has been permanently removed.  Release resources and other cleanup\n     */\n    dispose() {\n\n        this.disposed = true\n\n        // This should not be neccessary, but in case there is some unknown reference holding onto this track object,\n        // for example in client code, release any resources here.\n        for (let key of Object.keys(this)) {\n            this[key] = undefined\n        }\n    }\n\n    static getCravatLink(chr, position, ref, alt, genomeID) {\n\n        if (\"hg38\" === genomeID || \"GRCh38\" === genomeID) {\n\n            const cravatChr = chr.startsWith(\"chr\") ? chr : \"chr\" + chr\n            return `<a target=\"_blank\" href=\"https://run.opencravat.org/result/nocache/variant.html` +\n                `?chrom=${cravatChr}&pos=${position}&ref_base=${ref}&alt_base=${alt}\"><b>Cravat ${ref}->${alt}</b></a>`\n\n        } else {\n            return undefined\n        }\n    }\n}\n\nfunction hoverText(clickState) {\n\n    if (!this.hoverTextFields) return\n\n    const features = this.clickedFeatures(clickState)\n\n    if (features && features.length > 0) {\n        let str = \"\"\n        for (let i = 0; i < features.length; i++) {\n            if (i === 10) {\n                str += \"; ...\"\n                break\n            }\n            if (!features[i]) continue\n\n            const f = features[i]._f || features[i]\n            if (str.length > 0) str += \"\\n\"\n\n            str = \"\"\n            for (let field of this.hoverTextFields) {\n                if (str.length > 0) str += \"\\n\"\n                if (f.hasOwnProperty(field)) {\n                    str += f[field]\n                } else if (typeof f.getAttribute === \"function\") {\n                    str += f.getAttribute(field)\n                }\n            }\n\n        }\n        return str\n    }\n}\n\n/**\n * Map UCSC track line \"type\" setting to file format.  In igv.js \"type\" refers to the track type, not the input file format\n * @type {Map<string, string>}\n */\nconst UCSCTypeMappings = new Map([\n    [\"wiggle_0\", \"wig\"],\n    [\"bed\", \"bed\"],\n    [\"bigBed\", \"bigBed\"],\n    [\"bigWig\", \"bigWig\"]\n])\nexport default TrackBase\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport TrackBase from \"../trackBase.js\"\n\n\n/**\n *  Define parser for seg files  (.bed, .gff, .vcf, etc).  A parser should implement 2 methods\n *\n *     parseHeader(data) - return an object representing a header.  Details are format specific\n *\n *     parseFeatures(data) - return a list of features\n *\n */\n\n\nclass SegParser {\n\n    constructor(type) {\n        this.type = type || 'seg'   // One of seg, mut, or maf\n\n        switch (this.type) {\n            case 'mut':\n                this.sampleColumn = 3\n                this.chrColumn = 0\n                this.startColumn = 1\n                this.endColumn = 2\n                this.dataColumn = 4\n                break\n            case 'maf':\n                this.sampleColumn = 15\n                this.chrColumn = 4\n                this.startColumn = 5\n                this.endColumn = 6\n                this.dataColumn = 8\n                break\n            default:\n                this.sampleColumn = 0\n                this.chrColumn = 1\n                this.startColumn = 2\n                this.endColumn = 3\n            // Data column determined after reading header\n        }\n    }\n\n    async parseHeader(dataWrapper) {\n        let line\n        while ((line = await dataWrapper.nextLine()) !== undefined) {\n            if (line.startsWith(\"#\")) {\n                // skip\n            } else {\n                const tokens = line.split(\"\\t\")\n                this.header = {headings: tokens}\n                break\n            }\n        }\n        return this.header\n    }\n\n    async parseFeatures(dataWrapper) {\n\n        const allFeatures = []\n        let extraHeaders\n        if (!this.header) {\n            this.header = await this.parseHeader(dataWrapper)  // This will only work for non-indexed files\n        }\n        if ('seg' === this.type) {\n            this.dataColumn = this.header.headings.length - 1\n        }\n        if (this.header.headings.length > 5) {\n            extraHeaders = this.extractExtraColumns(this.header.headings)\n        }\n        const valueColumnName = this.header.headings[this.dataColumn]\n\n        let line\n        while ((line = await dataWrapper.nextLine()) !== undefined) {\n            const tokens = line.split(\"\\t\")\n            const value = ('seg' === this.type) ? Number(tokens[this.dataColumn]) : tokens[this.dataColumn]\n            if (tokens.length > this.dataColumn) {\n                const feature = new SegFeature({\n                    sample: tokens[this.sampleColumn],\n                    chr: tokens[this.chrColumn],\n                    start: parseInt(tokens[this.startColumn]) - 1,\n                    end: parseInt(tokens[this.endColumn]),\n                    value,\n                    valueColumnName\n                })\n                if (extraHeaders) {\n                    const extraValues = this.extractExtraColumns(tokens)\n                    feature.setAttributes({names: extraHeaders, values: extraValues})\n                }\n                allFeatures.push(feature)\n            }\n        }\n        return allFeatures\n    }\n\n    extractExtraColumns(tokens) {\n        const extras = []\n        for (let i = 0; i < tokens.length; i++) {\n            if (i !== this.chrColumn && i !== this.startColumn && i !== this.endColumn && i !== this.sampleColumn) {\n                extras.push(tokens[i])\n            }\n        }\n        return extras\n    }\n\n}\n\nclass SegFeature {\n\n    constructor({sample, chr, start, end, value, valueColumnName}) {\n        this.sample = sample\n        this.chr = chr\n        this.start = start\n        this.end = end\n        this.value = value\n        this.valueColumnName = valueColumnName\n    }\n\n    setAttributes({names, values}) {\n        this.attributeNames = names\n        this.attributeValues = values\n    }\n\n    getAttribute(name) {\n        if (this.attributeNames) {\n            const idx = this.attributeNames.indexOf(name)\n            if (idx >= 0) {\n                return this.attributeValues[idx]\n            }\n        }\n        return undefined\n    }\n\n\n    popupData(type, genomeID) {\n        const filteredProperties = new Set(['chr', 'start', 'end', 'sample', 'value', 'row', 'color', 'sampleKey',\n            'uniqueSampleKey', 'sampleId', 'chromosome', 'uniquePatientKey'])\n        const locationString = (this.chr + \":\" +\n            StringUtils.numberFormatter(this.start + 1) + \"-\" +\n            StringUtils.numberFormatter(this.end))\n        const pd = [\n            {name: \"Sample\", value: this.sample},\n            {name: \"Location\", value: locationString},\n            {name: this.valueColumnName ? StringUtils.capitalize(this.valueColumnName) : \"Value\", value: this.value}\n        ]\n\n        // TODO -- the Cravat stuff should probably be in the track (SegTrack)\n        if (\"mut\" === type && \"hg38\" === genomeID) {\n            const l = this.extractCravatLink(genomeID)\n            if (l) {\n                pd.push('<hr/>')\n                pd.push({html: l})\n                pd.push('<hr/>')\n            }\n        }\n\n        if (this.attributeNames && this.attributeNames.length > 0) {\n            for (let i = 0; i < this.attributeNames.length; i++) {\n                if (!filteredProperties.has(this.attributeNames[i]) & this.valueColumnName !== this.attributeNames[i]) {\n                    pd.push({name: StringUtils.capitalize(this.attributeNames[i]), value: this.attributeValues[i]})\n                }\n            }\n        }\n        return pd\n    }\n\n    extractCravatLink(genomeId) {\n\n        let ref, alt\n        if (this.attributeNames && this.attributeNames.length > 0) {\n            for (let i = 0; i < this.attributeNames.length; i++) {\n                if (!ref && \"Reference_Allele\" === this.attributeNames[i]) {\n                    ref = this.attributeValues[i]\n                }\n                if (!alt && this.attributeNames[i].startsWith(\"Tumor_Seq_Allele\") && this.attributeValues[i] !== ref) {\n                    alt = this.attributeValues[i]\n                }\n                if (ref && alt) {\n                    return TrackBase.getCravatLink(this.chr, this.start + 1, ref, alt, genomeId)\n                }\n            }\n        }\n\n    }\n}\n\n\nexport default SegParser","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport TrackBase from \"../trackBase.js\"\nimport {StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\n/**\n * Create a variant from an array of tokens representing a line in a \"VCF\" file\n * @param tokens\n */\nfunction createVCFVariant(tokens) {\n    const variant = new Variant()\n    variant.chr = tokens[0] // TODO -- use genome aliases\n    variant.pos = parseInt(tokens[1])\n    variant.names = tokens[2]    // id in VCF\n    variant.referenceBases = tokens[3]\n    variant.alternateBases = tokens[4]\n    variant.quality = tokens[5]\n    variant.filter = tokens[6]\n    variant.info = {}\n    const infoStr = tokens[7]\n    if (infoStr) {\n        for (let elem of infoStr.split(';')) {\n            var element = elem.split('=')\n            variant.info[element[0]] = element[1]\n        }\n    }\n    variant.init()\n    return variant\n}\n\n\n/**\n * @deprecated - the GA4GH API has been deprecated.  This code no longer maintained.\n * @param json\n * @returns {Variant}\n */\nfunction createGAVariant(json) {\n\n    var variant = new Variant()\n\n    variant.chr = json.referenceName\n    variant.start = parseInt(json.start)  // Might get overriden below\n    variant.end = parseInt(json.end)      // Might get overriden below\n    variant.pos = variant.start + 1       // GA4GH is 0 based.\n    variant.names = arrayToString(json.names, \"; \")\n    variant.referenceBases = json.referenceBases\n    variant.alternateBases = arrayToString(json.alternateBases)\n    variant.quality = json.quality\n    variant.filter = arrayToString(json.filter)\n\n\n    // Flatten GA4GH attributes array\n    variant.info = {}\n    if (json.info) {\n        Object.keys(json.info).forEach(function (key) {\n            var value,\n                valueArray = json.info[key]\n\n            if (Array.isArray(valueArray)) {\n                value = valueArray.join(\",\")\n            } else {\n                value = valueArray\n            }\n            variant.info[key] = value\n        })\n    }\n\n\n    // Need to build a hash of calls for fast lookup\n    // Note from the GA4GH spec on call ID:\n    //\n    // The ID of the call set this variant call belongs to. If this field is not present,\n    // the ordering of the call sets from a SearchCallSetsRequest over this GAVariantSet\n    // is guaranteed to match the ordering of the calls on this GAVariant.\n    // The number of results will also be the same.\n    variant.calls = {}\n    var order = 0, id\n    if (json.calls) {\n        json.calls.forEach(function (call) {\n            id = call.callSetId\n            variant.calls[id] = call\n            order++\n\n        })\n    }\n\n    init(variant)\n\n    return variant\n\n}\n\n\nclass Variant {\n\n    init() {\n\n        const ref = this.referenceBases\n        const altBases = this.alternateBases\n\n        if (this.info) {\n            if (this.info[\"VT\"]) {\n                this.type = this.info[\"VT\"]\n            } else if (this.info[\"SVTYPE\"]) {\n                this.type = \"SV\"\n            } else if (this.info[\"PERIOD\"]) {\n                this.type = \"STR\"\n            }\n        }\n        if (this.type === undefined) {\n            this.type = determineType(ref, altBases)\n        }\n        if (this.type === \"NONVARIANT\") {\n            this.heterozygosity = 0\n        }\n\n        // Determine start/end coordinates -- these are the coordinates representing the actual variant,\n        // not the leading or trailing reference\n        if (this.info[\"END\"]) {\n            this.start = this.pos - 1\n            if (this.info[\"CHR2\"] && this.info[\"CHR2\"] !== this.chr) {\n                this.end = this.start + 1\n            } else {\n                this.end = Number.parseInt(this.info[\"END\"])\n            }\n        } else {\n            if (this.type === \"NONVARIANT\") {\n                this.start = this.pos - 1      // convert to 0-based coordinate convention\n                this.end = this.start + ref.length\n            } else {\n\n                const altTokens = altBases.split(\",\").filter(token => token.length > 0)\n                this.alleles = []\n                this.start = undefined\n                this.end = undefined\n\n                for (let alt of altTokens) {\n\n                    this.alleles.push(alt)\n\n                    // We don't yet handle  SV and other special alt representations\n                    if (\"SV\" !== this.type && isKnownAlt(alt)) {\n\n                        let altLength = alt.length\n                        let lengthOnRef = ref.length\n                        const lmin = Math.min(altLength, lengthOnRef)\n\n                        // Trim off matching bases.  Try first match, then right -> left,  then any remaining left -> right\n                        let s = 0\n\n                        while (s < lmin && (ref.charCodeAt(s) === alt.charCodeAt(s))) {\n                            s++\n                            altLength--\n                            lengthOnRef--\n                        }\n\n                        // right -> left from end\n                        while (altLength > 0 && lengthOnRef > 0) {\n                            const altIdx = s + altLength - 1\n                            const refIdx = s + lengthOnRef - 1\n                            if (alt.charCodeAt(altIdx) === ref.charCodeAt(refIdx)) {\n                                altLength--\n                                lengthOnRef--\n                            } else {\n                                break\n                            }\n                        }\n\n                        // if any remaining, left -> right\n                        while (altLength > 0 && lengthOnRef > 0) {\n                            const altIdx = s\n                            const refIdx = s\n                            if (alt.charCodeAt(altIdx) === ref.charCodeAt(refIdx)) {\n                                s++\n                                altLength--\n                                lengthOnRef--\n                            } else {\n                                break\n                            }\n                        }\n\n                        const alleleStart = this.pos + s - 1      // -1 for zero based coordinates\n                        const alleleEnd = alleleStart + lengthOnRef\n                        this.start = this.start === undefined ? alleleStart : Math.min(this.start, alleleStart)\n                        this.end = this.end === undefined ? alleleEnd : Math.max(this.end, alleleEnd)\n                    }\n                }\n\n                // Default to single base representation @ position for variant types not otherwise handled\n                if (this.start === undefined) {\n                    this.start = this.pos - 1\n                    this.end = this.pos\n                }\n            }\n        }\n    }\n\n    popupData(genomicLocation, genomeId) {\n\n        const posString = `${StringUtils.numberFormatter(this.pos)}`\n        const locString = this.start === this.end ?\n            `${StringUtils.numberFormatter(this.start)} | ${StringUtils.numberFormatter(this.start + 1)}` :\n            `${StringUtils.numberFormatter(this.start + 1)}-${StringUtils.numberFormatter(this.end)}`\n        const fields = [\n            {name: \"Chr\", value: this.chr},\n            {name: \"Pos\", value: posString},\n            {name: \"Loc\", value: locString},\n            {name: \"ID\", value: this.names ? this.names : \"\"},\n            {name: \"Ref\", value: this.referenceBases},\n            {name: \"Alt\", value: this.alternateBases.replace(\"<\", \"&lt;\")},\n            {name: \"Qual\", value: this.quality},\n            {name: \"Filter\", value: this.filter}\n        ]\n\n        if (\"SNP\" === this.type) {\n            let ref = this.referenceBases\n            if (ref.length === 1) {\n                let altArray = this.alternateBases.split(\",\")\n                for (let alt of altArray) {\n                    if (alt.length === 1) {\n                        let l = TrackBase.getCravatLink(this.chr, this.pos, ref, alt, genomeId)\n                        if (l) {\n                            fields.push('<hr/>')\n                            fields.push({html: l})\n                        }\n                    }\n                }\n            }\n        }\n\n        if (this.hasOwnProperty(\"heterozygosity\")) {\n            fields.push({name: \"Heterozygosity\", value: this.heterozygosity})\n        }\n\n        if (this.info) {\n            fields.push({html: '<hr style=\"border-top: dotted 1px;border-color: #c9c3ba\" />'})\n            for (let key of Object.keys(this.info)) {\n                fields.push({name: key, value: arrayToString(decodeURIComponent(this.info[key]))})\n            }\n        }\n\n        return fields\n    }\n\n    getInfo(tag) {\n        return this.info ? this.info[tag] : undefined;\n    }\n\n    isRefBlock() {\n        return \"NONVARIANT\" === this.type\n    }\n\n}\n\nconst knownAltBases = new Set([\"A\", \"C\", \"T\", \"G\"].map(c => c.charCodeAt(0)))\n\nfunction isKnownAlt(alt) {\n    for (let i = 0; i < alt.length; i++) {\n        if (!knownAltBases.has(alt.charCodeAt(i))) {\n            return false\n        }\n    }\n    return true\n}\n\n\nfunction determineType(ref, altAlleles) {\n    const refLength = ref.length\n    if (altAlleles === undefined) {\n        return \"UNKNOWN\"\n    } else if (altAlleles.trim().length === 0 ||\n        altAlleles === \"<NON_REF>\" ||\n        altAlleles === \"<*>\" ||\n        altAlleles === \".\") {\n        return \"NONVARIANT\"\n    } else {\n        const alleles = altAlleles.split(\",\")\n        const types = alleles.map(function (a) {\n            if (refLength === 1 && a.length === 1) {\n                return \"SNP\"\n            } else {\n                return \"<NON_REF>\" === a ? \"NONVARIANT\" : \"OTHER\"\n            }\n        })\n        let type = types[0]\n        for (let t of types) {\n            if (t !== type) {\n                return \"MIXED\"\n            }\n        }\n        return type\n    }\n}\n\nfunction arrayToString(value, delim) {\n\n    if (delim === undefined) delim = \",\"\n\n    if (!(Array.isArray(value))) {\n        return value\n    }\n    return value.join(delim)\n}\n\n\nexport {createVCFVariant, createGAVariant}\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {createVCFVariant} from \"./variant.js\"\nimport {StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\n/**\n * Parser for VCF files.\n */\n\nclass VcfParser {\n\n    construtor() {\n    }\n\n    async parseHeader(dataWrapper, genome) {\n\n        const header = {}\n\n        header.chrAliasTable = new Map()\n\n        // First line must be file format\n        let line = await dataWrapper.nextLine()\n        if (line.startsWith(\"##fileformat\")) {\n            header.version = line.substr(13)\n        } else {\n            throw new Error(\"Invalid VCF file: missing fileformat line\")\n        }\n\n        while ((line = await dataWrapper.nextLine()) !== undefined) {\n\n            if (line.startsWith(\"#\")) {\n\n                let id\n                const values = {}\n\n                if (line.startsWith(\"##\")) {\n\n                    if (line.startsWith(\"##INFO\") || line.startsWith(\"##FILTER\") || line.startsWith(\"##FORMAT\")) {\n\n                        const ltIdx = line.indexOf(\"<\")\n                        const gtIdx = line.lastIndexOf(\">\")\n\n                        if (!(ltIdx > 2 && gtIdx > 0)) {\n                            console.log(\"Malformed VCF header line: \" + line)\n                            continue\n                        }\n\n                        const type = line.substring(2, ltIdx - 1)\n                        if (!header[type]) header[type] = {}\n\n                        //##INFO=<ID=AF,Number=A,Type=Float,Description=\"Allele frequency based on Flow Evaluator observation counts\">\n                        // ##FILTER=<ID=NOCALL,Description=\"Generic filter. Filtering details stored in FR info tag.\">\n                        // ##FORMAT=<ID=AF,Number=A,Type=Float,Description=\"Allele frequency based on Flow Evaluator observation counts\">\n\n                        const tokens = StringUtils.splitStringRespectingQuotes(line.substring(ltIdx + 1, gtIdx - 1), \",\")\n\n                        for (let token of tokens) {\n                            var kv = token.split(\"=\")\n                            if (kv.length > 1) {\n                                if (kv[0] === \"ID\") {\n                                    id = kv[1]\n                                } else {\n                                    values[kv[0]] = kv[1]\n                                }\n                            }\n                        }\n\n                        if (id) {\n                            header[type][id] = values\n                        }\n                    } else if (line.startsWith(\"##contig\") && genome) {\n                        const idx1 = line.indexOf(\"<ID=\")\n                        let idx2 = line.indexOf(\",\", idx1)\n                        if (idx2 == -1) {\n                            idx2 = line.indexOf(\">\", idx1)\n                        }\n                        const chr = line.substring(idx1 + 4, idx2)\n                        const canonicalChromosome = genome.getChromosomeName(chr)\n                        header.chrAliasTable.set(canonicalChromosome, chr)\n                    } else {\n                        // ignoring other directives\n                    }\n                } else if (line.startsWith(\"#CHROM\")) {\n                    const tokens = line.split(\"\\t\")\n\n                    if (tokens.length > 8) {\n\n                        // call set names -- use column index for id\n                        header.callSets = []\n                        for (let j = 9; j < tokens.length; j++) {\n                            header.callSets.push({id: j, name: tokens[j]})\n                        }\n                    }\n                }\n\n            } else {\n                break\n            }\n\n        }\n\n        this.header = header  // Will need to intrepret genotypes and info field\n\n        return header\n    }\n\n\n    /**\n     * Parse data as a collection of Variant objects.\n     *\n     * @param data\n     * @returns {Array}\n     */\n    async parseFeatures(dataWrapper) {\n\n        const allFeatures = []\n        const callSets = this.header.callSets\n        const nExpectedColumns = 8 + (callSets ? callSets.length + 1 : 0)\n        let line\n        while ((line = await dataWrapper.nextLine()) !== undefined) {\n            if (line && !line.startsWith(\"#\")) {\n\n                const tokens = line.split(\"\\t\")\n                if (tokens.length === nExpectedColumns) {\n                    const variant = createVCFVariant(tokens)\n                    variant.header = this.header       // Keep a pointer to the header to interpret fields for popup text\n                    //variant.line = line              // Uncomment for debugging\n                    allFeatures.push(variant)\n\n                    if (tokens.length > 9) {\n\n                        // Format\n                        const callFields = extractCallFields(tokens[8].split(\":\"))\n\n                        variant.calls = {}\n                        for (let index = 9; index < tokens.length; index++) {\n\n                            const token = tokens[index]\n\n                            const callSet = callSets[index - 9]\n                            const call = {\n                                callSetName: callSet.name,\n                                info: {}\n                            }\n\n                            variant.calls[callSet.id] = call\n\n                            token.split(\":\").forEach(function (callToken, idx) {\n\n                                switch (idx) {\n                                    case callFields.genotypeIndex:\n                                        call.genotype = []\n                                        callToken.split(/[\\|\\/]/).forEach(function (s) {\n                                            call.genotype.push('.' === s ? s : parseInt(s))\n                                        })\n                                        break\n\n                                    default:\n                                        call.info[callFields.fields[idx]] = callToken\n                                }\n                            })\n                        }\n                    }\n\n                    // If this is a structural variant create a complement of this variant for the other end\n                    // The test for \"SV\" is not comprehensive, there is not yet a standard for this\n                    if (variant.info && variant.info.CHR2 && variant.info.END) {\n                        allFeatures.push(svComplement(variant))\n                    }\n                }\n            }\n        }\n\n        return allFeatures\n    }\n}\n\nfunction extractCallFields(tokens) {\n\n    const callFields = {\n        genotypeIndex: -1,\n        fields: tokens\n    }\n    for (let i = 0; i < tokens.length; i++) {\n        if (\"GT\" === tokens[i]) {\n            callFields.genotypeIndex = i\n        }\n    }\n    return callFields\n}\n\nfunction svComplement(v) {\n\n    const chr2 = v.info.CHR2\n    const pos2 = Number.parseInt(v.info.END)\n    return {\n        chr: chr2,\n        start: pos2 - 1,\n        end: pos2,\n        _f: v\n    }\n\n}\n\nexport default VcfParser\n","/**\n * Parser for IGV desktop GWAS files.  See http://software.broadinstitute.org/software/igv/GWAS\n */\nclass GWASParser {\n\n    constructor(config) {\n        // Defaults - can be overriden by header\n        this.config = config\n        if (config.columns) {\n            if (config.columns.chromosome === undefined ||\n                config.columns.position === undefined ||\n                config.columns.value === undefined) {\n                throw Error(\"columns property must define chrCol, posCol, and valueCol\")\n            }\n            this.posCol = config.columns.position - 1\n            this.chrCol = config.columns.chromosome - 1\n            this.valueCol = config.columns.value - 1\n        } else {\n            // Defaults -- can be overriden in header\n            this.posCol = 2\n            this.chrCol = 1\n            this.valueCol = 3\n        }\n    }\n\n    async parseHeader(dataWrapper) {\n        const headerLine = await dataWrapper.nextLine()\n        return this.parseHeaderLine(headerLine)\n    }\n\n    parseHeaderLine(headerLine) {\n        this.columns = headerLine.split(/\\t/)\n        if (!this.config.columns) {\n            for (let i = 0; i < this.columns.length; i++) {\n                const c = this.columns[i].toLowerCase()\n                switch (c) {\n                    case 'chr':\n                    case 'chromosome':\n                    case 'chr_id':\n                        this.chrCol = i\n                        break\n                    case 'bp':\n                    case 'pos':\n                    case 'position':\n                    case 'chr_pos':\n                        this.posCol = i\n                        break\n                    case 'p':\n                    case 'pval':\n                    case 'pvalue':\n                    case 'p-value':\n                    case 'p.value':\n                        this.valueCol = i\n                        break\n                }\n            }\n        }\n        return this.columns\n    }\n\n    async parseFeatures(dataWrapper) {\n\n        const allFeatures = []\n        const headerLine = dataWrapper.nextLine()\n        if (!this.columns) {\n            this.parseHeaderLine(headerLine)\n        }\n        let line\n        while ((line = dataWrapper.nextLine()) !== undefined) {\n            const tokens = line.split(/\\t/)\n            if (tokens.length === this.columns.length) {\n                const chr = tokens[this.chrCol]\n                const start = parseInt(tokens[this.posCol]) - 1\n                const end = start + 1\n                const value = Number(tokens[this.valueCol])\n                allFeatures.push(new GWASFeature({\n                    chr: chr,\n                    start: start,\n                    end: end,\n                    value: value,\n                    line: line,\n                    columns: this.columns\n                }))\n            }\n        }\n        return allFeatures\n    }\n}\n\nclass GWASFeature {\n\n    constructor({chr, start, end, value, line, columns}) {\n        this.chr = chr\n        this.start = start\n        this.end = end\n        this.value = value\n        this.line = line\n        this.columns = columns\n    }\n\n    popupData() {\n        const tokens = this.line.split(/\\t/)\n        return this.columns.map(function (c, index) {\n            return {name: c, value: tokens[index]}\n        })\n    }\n\n    getAttribute(attrName) {\n        const tokens = this.line.split(/\\t/)\n        for (let i = 0; i < this.columns.length; i++) {\n            if (this.columns[i] === attrName) {\n                return tokens[i]\n            }\n        }\n        return undefined\n    }\n\n}\n\nexport default GWASParser\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {IGVColor} from \"../../node_modules/igv-utils/src/index.js\"\n\n/**\n *  Define parsers for bed-like files  (.bed, .gff, .vcf, etc).  A parser should implement 2 methods\n *\n *     parseHeader(data) - return an object representing a header or metadata.  Details are format specific\n *\n *     parseFeatures(data) - return an array of features\n *\n */\n\nvar aedRegexpNoNamespace = new RegExp(\"([^:]*)\\\\(([^)]*)\\\\)\") // name(type) for AED parsing (namespace undefined)\nvar aedRegexpNamespace = new RegExp(\"([^:]*):([^(]*)\\\\(([^)]*)\\\\)\") // namespace:name(type) for AED parsing\n\n\nclass AEDParser {\n\n    constructor(config) {\n        const decode = config ? config.decode : undefined\n        this.nameField = config ? config.nameField : undefined\n        this.skipRows = 0   // The number of fixed header rows to skip.  Override for specific types as needed\n        if (decode) {\n            this.decode = decode\n        } else {\n            this.decode = decodeAed\n        }\n        this.delimiter = \"\\t\"\n    }\n\n    async parseHeader(dataWrapper) {\n        let line\n        let header\n        while (line = await dataWrapper.nextLine()) {\n            if (line.startsWith(\"track\") || line.startsWith(\"#\") || line.startsWith(\"browser\")) {\n                if (line.startsWith(\"track\") || line.startsWith(\"#track\")) {\n                    let h = parseTrackLine(line)\n                    if (header) {\n                        Object.assign(header, h)\n                    } else {\n                        header = h\n                    }\n                } else if (line.startsWith(\"#columns\")) {\n                    let h = parseColumnsDirective(line)\n                    if (header) {\n                        Object.assign(header, h)\n                    } else {\n                        header = h\n                    }\n                } else if (line.startsWith(\"##gff-version 3\")) {\n                    this.format = \"gff3\"\n                    if (!header) header = {}\n                    header[\"format\"] = \"gff3\"\n                }\n            } else {\n                break\n            }\n        }\n        this.header = header    // Directives might be needed for parsing lines\n        return header\n    }\n\n    async parseFeatures(dataWrapper) {\n\n        const allFeatures = []\n        let cnt = 0\n        const decode = this.decode\n        const delimiter = this.delimiter || \"\\t\"\n        let i = 0\n        let line\n        let wig\n\n        while ((line = dataWrapper.nextLine()) !== undefined) {\n            i++\n            if (i <= this.skipRows || line.startsWith(\"track\") || line.startsWith(\"#\") || line.startsWith(\"browser\")) {\n                continue\n            }\n\n            let tokens = readTokensAed()\n            if (tokens.length < 1) {\n                continue\n            }\n\n            if (!this.aed) {\n                // Store information about the aed header in the parser itself\n                // This is done only once - on the first row\n                this.aed = parseAedHeaderRow(tokens)\n                continue\n            }\n\n            const feature = decode.call(this, tokens, wig)\n            if (feature) {\n                allFeatures.push(feature)\n                cnt++\n            }\n        }\n\n        return allFeatures\n\n        // Double quoted strings can contain newlines in AED\n        // \"\" is an escape for a \".\n        // Parse all this, clean it up, split into tokens in a custom way\n        function readTokensAed() {\n            var tokens = [],\n                token = \"\",\n                quotedString = false,\n                n,\n                c\n\n            while (line || line === '') {\n                for (n = 0; n < line.length; n++) {\n                    c = line.charAt(n)\n                    if (c === delimiter) {\n                        if (!quotedString) {\n                            tokens.push(token)\n                            token = \"\"\n                        } else {\n                            token += c\n                        }\n                    } else if (c === \"\\\"\") {\n                        // Look ahead to the next character\n                        if (n + 1 < line.length && line.charAt(n + 1) === \"\\\"\") {\n                            if (quotedString) {\n                                // Turn \"\" into a single \" in the output string\n                                token += \"\\\"\"\n                            } else {\n                                // \"\" on its own means empty string, ignore\n                            }\n                            // Skip the next double quote\n                            n++\n                        } else {\n                            // We know the next character is NOT a double quote, flip our state\n                            quotedString = !quotedString\n                        }\n                    } else {\n                        token += c\n                    }\n                }\n                // We are at the end of the line\n                if (quotedString) {\n                    token += '\\n' // Add newline to the token\n                    line = nextLine() // Keep going\n                } else {\n                    // We can end the loop\n                    break\n                }\n            }\n            // Push the last token\n            tokens.push(token)\n            return tokens\n        }\n    }\n}\n\n\nfunction parseAedToken(value) {\n    // Example: refseq:accessionNumber(aed:String)\n    // refseq - namespace, will be declared later\n    // accessionNumber - name of the field\n    // aed:String - type of the field\n    // The namespace part may be missing\n    var match = aedRegexpNamespace.exec(value)\n    if (match) {\n        return {\n            namespace: match[1],\n            name: match[2],\n            type: match[3]\n        }\n    }\n\n    match = aedRegexpNoNamespace.exec(value)\n    if (match) {\n        return {\n            namespace: '?',\n            name: match[1],\n            type: match[2]\n        }\n    } else {\n        throw new Error(\"Error parsing the header row of AED file - column not in ns:name(ns:type) format\")\n    }\n}\n\nfunction parseAedHeaderRow(tokens) {\n    // First row of AED file defines column names\n    // Each header item is an aed token - see parseAedToken\n    var aed,\n        k,\n        token,\n        aedToken\n\n    // Initialize aed section to be filled in\n    aed = {\n        columns: [ // Information about the namespace, name and type of each column\n            // Example entry:\n            // { namespace: 'bio', name: 'start', type: 'aed:Integer' }\n        ],\n        metadata: { // Metadata about the entire AED file\n            // Example:\n            // {\n            //    aed: {\n            //       application: { value: \"CHaS Browser 3.3.0.139 (r10838)\", type: \"aed:String\" },\n            //       created: { value: \"2018-01-02T10:20:30.123+01:00\", type: \"aed:DateTime\" },\n            //       modified: { value: \"2018-03-04T11:22:33.456+01:00\", type: \"aed:DateTime\" },\n            //    }\n            //    affx: {\n            //       ucscGenomeVersion: { value: \"hg19\", type: \"aed:String\" }\n            //    },\n            //    namespace: {\n            //       omim: { value: \"http://affymetrix.com/ontology/www.ncbi.nlm.nih.gov/omim/\", type: \"aed:URI\" },\n            //       affx: { value: \"http://affymetrix.com/ontology/\", type: \"aed:URI\" },\n            //       refseq: { value: \"http://affymetrix.com/ontology/www.ncbi.nlm.nih.gov/RefSeq/\", type: \"aed:URI\" }\n            //    }\n            // }\n        }\n    }\n    for (k = 0; k < tokens.length; k++) {\n        token = tokens[k]\n        aedToken = parseAedToken(token)\n        aed.columns.push(aedToken)\n    }\n\n    return aed\n}\n\nfunction parseTrackLine(line) {\n\n    const properties = {}\n    const tokens = line.split(/(?:\")([^\"]+)(?:\")|([^\\s\"]+)(?=\\s+|$)/g)\n\n\n    // Clean up tokens array\n    let curr\n    const tmp = []\n    for (let tk of tokens) {\n        if (!tk || tk.trim().length === 0) continue\n        if (tk.endsWith(\"=\") > 0) {\n            curr = tk\n        } else if (curr) {\n            tmp.push(curr + tk)\n            curr = undefined\n        } else {\n            tmp.push(tk)\n        }\n    }\n    for (let str of tmp) {\n        if (!str) return\n        var kv = str.split('=', 2)\n        if (kv.length === 2) {\n            const key = kv[0].trim()\n            const value = kv[1].trim()\n            properties[key] = value\n        }\n\n    }\n\n    return properties\n}\n\nfunction parseColumnsDirective(line) {\n\n    let properties = {}\n    let t1 = line.split(/\\s+/)\n\n    if (t1.length === 2) {\n\n        let t2 = t1[1].split(\";\")\n\n        t2.forEach(function (keyValue) {\n\n            let t = keyValue.split(\"=\")\n\n            if (t[0] === \"color\") {\n                properties.colorColumn = Number.parseInt(t[1]) - 1\n            } else if (t[0] === \"thickness\") {\n                properties.thicknessColumn = Number.parseInt(t[1]) - 1\n            }\n        })\n    }\n\n    return properties\n}\n\nfunction decodeBedGraph(tokens, ignore) {\n\n    var chr, start, end, value\n\n    if (tokens.length < 3) return null\n\n    chr = tokens[0]\n    start = parseInt(tokens[1])\n    end = parseInt(tokens[2])\n    value = Number(tokens[3])\n    const feature = {chr: chr, start: start, end: end, value: value}\n\n    // Optional extra columns\n    if (this.header) {\n        let colorColumn = this.header.colorColumn\n        if (colorColumn && colorColumn < tokens.length) {\n            feature.color = IGVColor.createColorString(tokens[colorColumn])\n        }\n    }\n\n    return feature\n}\n\nfunction parseAttributeString(attributeString, keyValueDelim) {\n    // parse 'attributes' string (see column 9 docs in https://github.com/The-Sequence-Ontology/Specifications/blob/master/gff3.md)\n    var attributes = {}\n    for (let kv of attributeString.split(';')) {\n        const t = kv.trim().split(keyValueDelim, 2)\n        if (t.length === 2) {\n            const key = t[0].trim()\n            let value = t[1].trim()\n            //Strip off quotes, if any\n            if (value.startsWith('\"') && value.endsWith('\"')) {\n                value = value.substr(1, value.length - 2)\n            }\n            attributes[key] = value\n        }\n    }\n    return attributes\n}\n\n/**\n * AED file feature.\n *\n * @param aed link to the AED file object containing file-level metadata and column descriptors\n * @param allColumns All columns as parsed from the AED\n *\n * Other values are parsed one by one\n */\nfunction AedFeature(aed, allColumns) {\n    var token, aedColumn, aedColumns = aed.columns\n\n    // Link to AED file (for metadata)\n    this.aed = aed\n\n    // Unparsed columns from AED file\n    this.allColumns = allColumns\n\n    // Prepare space for the parsed values\n    this.chr = null\n    this.start = null\n    this.end = null\n    this.score = 1000\n    this.strand = '.'\n    this.cdStart = null\n    this.cdEnd = null\n    this.name = null\n    this.color = null\n\n    for (let i = 0; i < allColumns.length; i++) {\n        token = allColumns[i]\n        if (!token) {\n            // Skip empty fields\n            continue\n        }\n        aedColumn = aedColumns[i]\n        if (aedColumn.type === 'aed:Integer') {\n            token = parseInt(token)\n        }\n        var arr = []\n        if (aedColumn.namespace.length > 0) {\n            for (let j = 0; j < aedColumn.namespace.length; j++) {\n                arr.push(aedColumn.namespace.charCodeAt(j))\n            }\n        }\n        if (aedColumn.namespace.trim() === 'bio') {\n            if (aedColumn.name === 'sequence') {\n                this.chr = token\n            } else if (aedColumn.name === 'start') {\n                this.start = token\n            } else if (aedColumn.name === 'end') {\n                this.end = token\n            } else if (aedColumn.name === 'cdsMin') {\n                this.cdStart = token\n            } else if (aedColumn.name === 'cdsMax') {\n                this.cdEnd = token\n            } else if (aedColumn.name === 'strand') {\n                this.strand = token\n            }\n        } else if (aedColumn.namespace === 'aed') {\n            if (aedColumn.name === 'name') {\n                this.name = token\n            }\n        } else if (aedColumn.namespace === 'style') {\n            if (aedColumn.name === 'color') {\n                this.color = IGVColor.createColorString(token)\n            }\n        }\n    }\n}\n\nAedFeature.prototype.popupData = function () {\n    var data = [],\n        aed = this.aed\n    // Just dump everything we have for now\n    for (var i = 0; i < this.allColumns.length; i++) {\n        var featureValue = this.allColumns[i]\n        var name = aed.columns[i].name\n        // Skip columns that are not interesting - you know the sequence, and you can see color\n        if (name !== 'sequence' && name !== 'color') {\n            if (featureValue) {\n                data.push({name: name, value: featureValue})\n            }\n        }\n    }\n    return data\n}\n\n/**\n * Decode the AED file format\n * @param tokens\n * @param ignore\n * @returns decoded feature, or null if this is not a valid record\n */\nfunction decodeAed(tokens, ignore) {\n    var name, value, token,\n        nonEmptyTokens = 0,\n        aedColumns = this.aed.columns,\n        aedColumn,\n        aedKey,\n        i\n\n    // Each aed row must match the exact number of columns or we skip it\n    if (tokens.length !== aedColumns.length) {\n        console.log('Corrupted AED file row: ' + tokens.join(','))\n        return undefined\n    }\n\n    for (i = 0; i < tokens.length; i++) {\n        aedColumn = aedColumns[i]\n        token = tokens[i]\n        if (token !== '') {\n            nonEmptyTokens++\n        }\n        if (aedColumn.name === 'name' && aedColumn.namespace === 'aed') {\n            name = token\n        } else if (aedColumn.name === 'value' && aedColumn.namespace === 'aed') {\n            value = token\n        }\n    }\n\n    if (nonEmptyTokens === 2 && name && value) {\n        // Special row that defines metadata for the entire file\n        aedKey = parseAedToken(name)\n        // Store in the metadata section\n        if (!this.aed.metadata[aedKey.namespace]) {\n            this.aed.metadata[aedKey.namespace] = {}\n        }\n        if (!this.aed.metadata[aedKey.namespace][aedKey.name]) {\n            this.aed.metadata[aedKey.namespace][aedKey.name] = {\n                type: aedKey.type,\n                value: value\n            }\n        }\n        // Ignore this value\n        return undefined\n    }\n\n    var feature = new AedFeature(this.aed, tokens)\n\n    if (!feature.chr || (!feature.start && feature.start !== 0) || !feature.end) {\n        console.log('Cannot parse feature: ' + tokens.join(','))\n        return undefined\n    }\n\n    return feature\n}\n\n\nexport default AEDParser\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n// TODO -- big endian?\n\nclass BinaryParser {\n    constructor(dataView, littleEndian) {\n\n        this.littleEndian = littleEndian !== undefined ? littleEndian : true\n        this.position = 0\n        this.view = dataView\n        this.length = dataView.byteLength\n    }\n\n    available() {\n        return this.length - this.position\n    }\n\n    remLength() {\n        return this.length - this.position\n    }\n\n    hasNext() {\n        return this.position < this.length - 1\n    }\n\n    getByte() {\n        var retValue = this.view.getUint8(this.position, this.littleEndian)\n        this.position++\n        return retValue\n    }\n\n    getShort() {\n\n        var retValue = this.view.getInt16(this.position, this.littleEndian)\n        this.position += 2\n        return retValue\n    }\n\n    getUShort() {\n\n        // var byte1 = this.getByte(),\n        //     byte2 = this.getByte(),\n        //     retValue = ((byte2 << 24 >>> 16) + (byte1 << 24 >>> 24));\n        //     return retValue;\n\n        //\n        var retValue = this.view.getUint16(this.position, this.littleEndian)\n        this.position += 2\n        return retValue\n    }\n\n\n    getInt() {\n\n        var retValue = this.view.getInt32(this.position, this.littleEndian)\n        this.position += 4\n        return retValue\n    }\n\n\n    getUInt() {\n        var retValue = this.view.getUint32(this.position, this.littleEndian)\n        this.position += 4\n        return retValue\n    }\n\n    getLong() {\n\n        // DataView doesn't support long. So we'll try manually\n\n        var b = []\n        b[0] = this.view.getUint8(this.position)\n        b[1] = this.view.getUint8(this.position + 1)\n        b[2] = this.view.getUint8(this.position + 2)\n        b[3] = this.view.getUint8(this.position + 3)\n        b[4] = this.view.getUint8(this.position + 4)\n        b[5] = this.view.getUint8(this.position + 5)\n        b[6] = this.view.getUint8(this.position + 6)\n        b[7] = this.view.getUint8(this.position + 7)\n\n        var value = 0\n        if (this.littleEndian) {\n            for (let i = b.length - 1; i >= 0; i--) {\n                value = (value * 256) + b[i]\n            }\n        } else {\n            for (let i = 0; i < b.length; i++) {\n                value = (value * 256) + b[i]\n            }\n        }\n\n\n        this.position += 8\n        return value\n    }\n\n    getString(len) {\n\n        var s = \"\"\n        var c\n        while ((c = this.view.getUint8(this.position++)) !== 0) {\n            s += String.fromCharCode(c)\n            if (len && s.length === len) break\n        }\n        return s\n    }\n\n    getFixedLengthString(len) {\n\n        var s = \"\"\n        var i\n        var c\n        for (i = 0; i < len; i++) {\n            c = this.view.getUint8(this.position++)\n            if (c > 0) {\n                s += String.fromCharCode(c)\n            }\n        }\n        return s\n    }\n\n    getFixedLengthTrimmedString(len) {\n\n        var s = \"\"\n        var i\n        var c\n        for (i = 0; i < len; i++) {\n            c = this.view.getUint8(this.position++)\n            if (c > 32) {\n                s += String.fromCharCode(c)\n            }\n        }\n        return s\n    }\n\n    getFloat() {\n\n        var retValue = this.view.getFloat32(this.position, this.littleEndian)\n        this.position += 4\n        return retValue\n\n\n    }\n\n    getDouble() {\n\n        var retValue = this.view.getFloat64(this.position, this.littleEndian)\n        this.position += 8\n        return retValue\n    }\n\n    skip(n) {\n\n        this.position += n\n        return this.position\n    }\n\n\n    /**\n     * Return a BGZip (bam and tabix) virtual pointer\n     * TODO -- why isn't 8th byte used ?\n     * @returns {*}\n     */\n    getVPointer() {\n\n        var position = this.position,\n            offset = (this.view.getUint8(position + 1) << 8) | (this.view.getUint8(position)),\n            byte6 = ((this.view.getUint8(position + 6) & 0xff) * 0x100000000),\n            byte5 = ((this.view.getUint8(position + 5) & 0xff) * 0x1000000),\n            byte4 = ((this.view.getUint8(position + 4) & 0xff) * 0x10000),\n            byte3 = ((this.view.getUint8(position + 3) & 0xff) * 0x100),\n            byte2 = ((this.view.getUint8(position + 2) & 0xff)),\n            block = byte6 + byte5 + byte4 + byte3 + byte2\n        this.position += 8\n\n        //       if (block == 0 && offset == 0) {\n        //           return null;\n        //       } else {\n        return new VPointer(block, offset)\n        //       }\n    }\n}\n\nclass VPointer {\n    constructor(block, offset) {\n        this.block = block\n        this.offset = offset\n    }\n\n    isLessThan(vp) {\n        return this.block < vp.block ||\n            (this.block === vp.block && this.offset < vp.offset)\n    }\n\n    isGreaterThan(vp) {\n        return this.block > vp.block ||\n            (this.block === vp.block && this.offset > vp.offset)\n    }\n\n    isEqualTo(vp) {\n        return this.block === vp.block && this.offset === vp.offset\n    }\n\n    print() {\n        return \"\" + this.block + \":\" + this.offset\n    }\n}\n\nexport default BinaryParser\n","function optimizeChunks(chunks, lowest) {\n\n    if (chunks.length === 0) return chunks\n\n    chunks.sort(function (c0, c1) {\n\n        const dif = c0.minv.block - c1.minv.block\n        if (dif !== 0) {\n            return dif\n        } else {\n            return c0.minv.offset - c1.minv.offset\n        }\n    })\n\n    if(chunks.length <= 1) {\n        return chunks\n    }\n\n    // console.log(\"Before trimming \" + chunks.length)\n    // for (let c of chunks) {\n    //     console.log(`${c.minv.block} ${c.minv.offset}  -  ${c.maxv.block} ${c.maxv.offset}`)\n    // }\n\n    if (lowest) {\n        chunks = chunks.filter(c => c.maxv.isGreaterThan(lowest))\n    }\n\n    // console.log(\"Before merging \" + chunks.length)\n    // for (let c of chunks) {\n    //     console.log(`${c.minv.block} ${c.minv.offset}  -  ${c.maxv.block} ${c.maxv.offset}`)\n    // }\n\n    const mergedChunks = []\n    let lastChunk\n    for (let chunk of chunks) {\n\n        if (!lastChunk) {\n            mergedChunks.push(chunk)\n            lastChunk = chunk\n        } else {\n            if (canMerge(lastChunk, chunk)) {\n                if (chunk.maxv.isGreaterThan(lastChunk.maxv)) {\n                    lastChunk.maxv = chunk.maxv\n                }\n            } else {\n                mergedChunks.push(chunk)\n                lastChunk = chunk\n            }\n        }\n    }\n\n    // console.log(\"After merging \" + mergedChunks.length)\n    // for (let c of mergedChunks) {\n    //     console.log(`${c.minv.block} ${c.minv.offset}  -  ${c.maxv.block} ${c.maxv.offset}`)\n    // }\n\n    return mergedChunks\n}\n\n\n/**\n * Merge 2 blocks if the file position gap between them is < 16 kb, and the total size is < ~5 mb\n * @param chunk1\n * @param chunk2\n * @returns {boolean|boolean}\n */\nfunction canMerge(chunk1, chunk2) {\n    const gap = chunk2.minv.block - chunk1.maxv.block\n    const sizeEstimate = chunk1.maxv.block - chunk1.minv.block\n    return sizeEstimate < 5000000\n}\n\nexport {optimizeChunks}\n\n","// Represents a CSI Bam or Tabix index\n\nimport BinaryParser from \"../binary.js\"\nimport {optimizeChunks} from \"./indexUtils.js\"\n\nconst CSI1_MAGIC = 21582659 // CSI\\1\nconst CSI2_MAGIC = 38359875 // CSI\\2\n\nasync function parseCsiIndex(arrayBuffer, genome) {\n\n    const idx = new CSIIndex()\n    idx.parse(arrayBuffer, genome)\n    return idx\n}\n\nclass CSIIndex {\n\n    constructor(tabix) {\n        this.tabix = true   // Means whatever is indexed is BGZipped\n    }\n\n    parse(arrayBuffer, genome) {\n        const parser = new BinaryParser(new DataView(arrayBuffer))\n\n        const magic = parser.getInt()\n\n        if (magic !== CSI1_MAGIC) {\n            if (magic === CSI2_MAGIC) {\n                throw Error(\"CSI version 2 is not supported.  Please enter an issue at https://github.com/igvteam/igv.js\")\n            } else {\n                throw Error(\"Not a CSI index\")\n            }\n        }\n\n        this.indices = []\n        this.blockMin = Number.MAX_SAFE_INTEGER\n        this.lastBlockPosition = []\n        this.sequenceIndexMap = {}\n\n        this.minShift = parser.getInt()\n        this.depth = parser.getInt()\n        const lAux = parser.getInt()\n        const seqNames = []\n        let bmax = 0\n\n        if (lAux >= 28) {\n            // Tabix header parameters aren't used, but they must be read to advance the pointer\n            const format = parser.getInt()\n            const col_seq = parser.getInt()\n            const col_beg = parser.getInt()\n            const col_end = parser.getInt()\n            const meta = parser.getInt()\n            const skip = parser.getInt()\n            const l_nm = parser.getInt()\n            const nameEndPos = parser.position + l_nm\n            let i = 0\n            while (parser.position < nameEndPos) {\n                let seq_name = parser.getString()\n                // Translate to \"official\" chr name.\n                if (genome) {\n                    seq_name = genome.getChromosomeName(seq_name)\n                }\n                this.sequenceIndexMap[seq_name] = i\n                seqNames[i] = seq_name\n                i++\n            }\n        }\n\n        const MAX_BIN = this.bin_limit() + 1\n        const nref = parser.getInt()\n        for (let ref = 0; ref < nref; ref++) {\n            const binIndex = []\n            const loffset = []\n            const nbin = parser.getInt()\n            for (let b = 0; b < nbin; b++) {\n\n                const binNumber = parser.getInt()\n                loffset[binNumber] = parser.getVPointer()\n\n                if (binNumber > MAX_BIN) {\n                    // This is a psuedo bin, not used but we have to consume the bytes\n                    const nchnk = parser.getInt() // # of chunks for this bin\n                    const cs = parser.getVPointer()   // unmapped beg\n                    const ce = parser.getVPointer()   // unmapped end\n                    const n_maped = parser.getLong()\n                    const nUnmapped = parser.getLong()\n\n                } else {\n\n                    binIndex[binNumber] = []\n                    const nchnk = parser.getInt() // # of chunks for this bin\n\n                    for (let i = 0; i < nchnk; i++) {\n                        const cs = parser.getVPointer()    //chunk_beg\n                        const ce = parser.getVPointer()    //chunk_end\n                        if (cs && ce) {\n                            if (cs.block < this.blockMin) {\n                                this.blockMin = cs.block    // Block containing first alignment\n                            }\n                            if (ce.block > bmax) {\n                                bmax = ce.block\n                            }\n                            binIndex[binNumber].push([cs, ce])\n                        }\n                    }\n                }\n            }\n\n            if (nbin > 0) {\n                this.indices[ref] = {\n                    binIndex: binIndex,\n                    loffset: loffset\n                }\n            }\n        }\n        this.lastBlockPosition = bmax\n    }\n\n    get chromosomeNames() {\n        return Object.keys(this.sequenceIndexMap)\n    }\n\n    /**\n     * Fetch blocks for a particular genomic range.  This method is public so it can be unit-tested.\n     *\n     * @param refId  the sequence dictionary index of the chromosome\n     * @param min  genomic start position\n     * @param max  genomic end position\n     * @param return an array of {minv: {filePointer, offset}, {maxv: {filePointer, offset}}\n     */\n    chunksForRange(refId, min, max) {\n\n        const ba = this.indices[refId]\n        if (!ba) {\n            return []\n        } else {\n            const overlappingBins = this.reg2bins(min, max)        // List of bin #s that overlap min, max\n            if (overlappingBins.length == 0) return []\n\n            const chunks = []\n            // Find chunks in overlapping bins.  Leaf bins (< 4681) are not pruned\n            for (let binRange of overlappingBins) {\n                for (let bin = binRange[0]; bin <= binRange[1]; bin++) {\n                    if (ba.binIndex[bin]) {\n                        const binChunks = ba.binIndex[bin]\n                        for (let c of binChunks) {\n                            const cs = c[0]\n                            const ce = c[1]\n                            chunks.push({minv: cs, maxv: ce, bin: bin})\n                        }\n                    }\n                }\n            }\n\n            const lowestOffset = ba.loffset[overlappingBins[0]]\n\n            return optimizeChunks(chunks, lowestOffset)\n        }\n\n    }\n\n    // reg2bins implementation adapted from GMOD/tabix-js  https://github.com/GMOD/tabix-js/blob/master/src/csi.ts\n    reg2bins(beg, end) {\n        beg -= 1 // < convert to 1-based closed\n        if (beg < 1) beg = 1\n        if (end > 2 ** 34) end = 2 ** 34 // 17 GiB ought to be enough for anybody\n        end -= 1\n        let l = 0\n        let t = 0\n        let s = this.minShift + this.depth * 3\n        const bins = []\n        for (; l <= this.depth; s -= 3, t += (1 << l * 3), l += 1) {\n            const b = t + (beg >> s)\n            const e = t + (end >> s)\n            //\n            // ITS NOT CLEAR WHERE THIS TEST CAME FROM,  but maxBinNumber is never set, and its not clear what it represents.\n            // if (e - b + bins.length > this.maxBinNumber)\n            //     throw new Error(\n            //         `query ${beg}-${end} is too large for current binning scheme (shift ${this.minShift}, depth ${this.depth}), try a smaller query or a coarser index binning scheme`,\n            //     )\n            //\n            bins.push([b, e])\n        }\n        return bins\n    }\n\n\n    bin_limit() {\n        return ((1 << (this.depth + 1) * 3) - 1) / 7\n    }\n\n}\n\nexport {parseCsiIndex}","// Represents a BAM or Tabix index.\n\nimport BinaryParser from \"../binary.js\"\nimport {optimizeChunks} from \"./indexUtils.js\"\n\nconst BAI_MAGIC = 21578050\nconst TABIX_MAGIC = 21578324\n\n\nasync function parseBamIndex(arrayBuffer, genome) {\n    const index = new BamIndex()\n    await index.parse(arrayBuffer, false, genome)\n    return index\n}\n\nasync function parseTabixIndex(arrayBuffer, genome) {\n    const index = new BamIndex()\n    await index.parse(arrayBuffer, true, genome)\n    return index\n}\n\nclass BamIndex {\n\n    constructor() {\n\n    }\n\n    async parse(arrayBuffer, tabix, genome) {\n\n        const indices = []\n        let blockMin = Number.MAX_SAFE_INTEGER\n        let blockMax = 0\n        const seqNames = []\n\n        const parser = new BinaryParser(new DataView(arrayBuffer))\n        const magic = parser.getInt()\n        const sequenceIndexMap = {}\n        if (magic === BAI_MAGIC || (tabix && magic === TABIX_MAGIC)) {\n\n            const nref = parser.getInt()\n            if (tabix) {\n                // Tabix header parameters aren't used, but they must be read to advance the pointer\n                const format = parser.getInt()\n                const col_seq = parser.getInt()\n                const col_beg = parser.getInt()\n                const col_end = parser.getInt()\n                const meta = parser.getInt()\n                const skip = parser.getInt()\n                const l_nm = parser.getInt()\n\n                for (let i = 0; i < nref; i++) {\n                    let seq_name = parser.getString()\n                    // Translate to \"official\" chr name.\n                    if (genome) {\n                        seq_name = genome.getChromosomeName(seq_name)\n                    }\n                    sequenceIndexMap[seq_name] = i\n                    seqNames[i] = seq_name\n                }\n            }\n\n            // Loop through sequences\n            for (let ref = 0; ref < nref; ref++) {\n\n                const binIndex = {}\n                const linearIndex = []\n                const nbin = parser.getInt()\n\n                for (let b = 0; b < nbin; b++) {\n                    const binNumber = parser.getInt()\n                    if (binNumber === 37450) {\n                        // This is a psuedo bin, not used but we have to consume the bytes\n                        const nchnk = parser.getInt() // # of chunks for this bin\n                        const cs = parser.getVPointer()   // unmapped beg\n                        const ce = parser.getVPointer()   // unmapped end\n                        const n_maped = parser.getLong()\n                        const nUnmapped = parser.getLong()\n\n                    } else {\n\n                        binIndex[binNumber] = []\n                        const nchnk = parser.getInt() // # of chunks for this bin\n\n                        for (let i = 0; i < nchnk; i++) {\n                            const cs = parser.getVPointer()    //chunk_beg\n                            const ce = parser.getVPointer()    //chunk_end\n                            if (cs && ce) {\n                                if (cs.block < blockMin) {\n                                    blockMin = cs.block    // Block containing first alignment\n                                }\n                                if (ce.block > blockMax) {\n                                    blockMax = ce.block\n                                }\n                                binIndex[binNumber].push([cs, ce])\n                            }\n                        }\n                    }\n                }\n\n                const nintv = parser.getInt()\n                for (let i = 0; i < nintv; i++) {\n                    const cs = parser.getVPointer()\n                    linearIndex.push(cs)   // Might be null\n                }\n\n                if (nbin > 0) {\n                    indices[ref] = {\n                        binIndex: binIndex,\n                        linearIndex: linearIndex\n                    }\n                }\n            }\n\n            this.firstBlockPosition = blockMin\n            this.lastBlockPosition = blockMax\n            this.indices = indices\n            this.sequenceIndexMap = sequenceIndexMap\n            this.tabix = tabix\n\n        } else {\n            throw new Error(indexURL + \" is not a \" + (tabix ? \"tabix\" : \"bai\") + \" file\")\n        }\n\n\n    }\n\n    get chromosomeNames() {\n        return Object.keys(this.sequenceIndexMap)\n    }\n\n    /**\n     * Fetch chunks for a particular genomic range.  This method is public so it can be unit-tested.\n     *\n     * @param refId  the sequence dictionary index of the chromosome\n     * @param min  genomic start position\n     * @param max  genomic end position\n     * @param return an array of objects representing chunks (file spans) {minv: {block, offset}, {maxv: {block, offset}}\n     */\n    chunksForRange(refId, min, max) {\n\n        const bam = this\n        const ba = bam.indices[refId]\n\n        if (!ba) {\n            return []\n        } else {\n            const overlappingBins = reg2bins(min, max)        // List of bin #s that overlap min, max\n\n            //console.log(\"bin ranges\")\n            //for(let b of overlappingBins) {\n            //    console.log(`${b[0]} - ${b[1]}`)\n            //}\n\n            const chunks = []\n            // Find chunks in overlapping bins.  Leaf bins (< 4681) are not pruned\n            for (let binRange of overlappingBins) {\n                for (let bin = binRange[0]; bin <= binRange[1]; bin++) {\n                    if (ba.binIndex[bin]) {\n                        const binChunks = ba.binIndex[bin]\n                        for (let c of binChunks) {\n                            const cs = c[0]\n                            const ce = c[1]\n                            chunks.push({minv: cs, maxv: ce})\n                        }\n                    }\n                }\n            }\n\n            // Use the linear index to find minimum file position of chunks that could contain alignments in the region\n            const nintv = ba.linearIndex.length\n\n            let lowest\n            const minLin = Math.min(min >> 14, nintv - 1)    // i.e. min / 16384\n            const maxLin = Math.min(max >> 14, nintv - 1)\n            for (let i = minLin; i <= maxLin; i++) {\n                const vp = ba.linearIndex[i]\n                if (vp) {\n                    lowest = vp       // lowest file offset that contains alignments overlapping (min, max)\n                    break\n                }\n            }\n\n            return optimizeChunks(chunks, lowest)\n        }\n    }\n}\n\n\n\n/**\n * Calculate the list of bins that overlap with region [beg, end]\n *\n */\nfunction reg2bins(beg, end) {\n    const i = 0\n    let k\n    const list = []\n    if (end >= 1 << 29) end = 1 << 29\n    --end\n    list.push([0, 0])\n    list.push([1 + (beg >> 26), 1 + (end >> 26)])\n    list.push([9 + (beg >> 23), 9 + (end >> 23)])\n    list.push([73 + (beg >> 20), 73 + (end >> 20)])\n    list.push([585 + (beg >> 17), 585 + (end >> 17)])\n    list.push([4681 + (beg >> 14), 4681 + (end >> 14)])\n\n    // for (k = 1 + (beg >> 26); k <= 1 + (end >> 26); ++k) list.push(k);\n    // for (k = 9 + (beg >> 23); k <= 9 + (end >> 23); ++k) list.push(k);\n    // for (k = 73 + (beg >> 20); k <= 73 + (end >> 20); ++k) list.push(k);\n    // for (k = 585 + (beg >> 17); k <= 585 + (end >> 17); ++k) list.push(k);\n    // for (k = 4681 + (beg >> 14); k <= 4681 + (end >> 14); ++k) list.push(k);\n    return list\n}\n\nexport {parseTabixIndex, parseBamIndex}","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport BinaryParser from \"../binary.js\"\n\nconst SEQUENCE_DICTIONARY_FLAG = 0x8000  // if we have a sequence dictionary in our header\n\nasync function parseTribbleIndex(arrayBuffer, genome) {\n\n    const index = new TribbleIndex()\n    index.parse(arrayBuffer, genome)\n    return index\n}\n\nclass TribbleIndex {\n\n    constructor() {\n\n    }\n\n    async parse(arrayBuffer, genome) {\n\n        let blockMax = 0\n        this.chrIndex = {}\n        this.lastBlockPosition = []\n        const parser = new BinaryParser(new DataView(arrayBuffer))\n        readHeader(parser)\n\n        let nChrs = parser.getInt()\n        while (nChrs-- > 0) {\n\n            // todo -- support interval tree index, we're assuming its a linear index\n\n            let chr = parser.getString()\n            if (genome) chr = genome.getChromosomeName(chr) // Translate to canonical name\n\n            const binWidth = parser.getInt()\n            const nBins = parser.getInt()\n            const longestFeature = parser.getInt()\n            const OLD_V3_INDEX = parser.getInt() > 0\n            const nFeatures = parser.getInt()\n\n            // note the code below accounts for > 60% of the total time to read an index\n            let pos = parser.getLong()\n            const blocks = []\n            for (let binNumber = 0; binNumber < nBins; binNumber++) {\n                const nextPos = parser.getLong()\n                const size = nextPos - pos\n                blocks.push({min: pos, max: nextPos}) //        {position: pos, size: size});\n                pos = nextPos\n                if (nextPos > blockMax) {\n                    blockMax = nextPos\n                }\n            }\n            this.chrIndex[chr] = {chr: chr, blocks: blocks, longestFeature: longestFeature, binWidth: binWidth}\n        }\n\n        this.lastBlockPosition = blockMax\n\n\n        /**\n         * Read the header .   Data here is not used in igv.js but we need to read it to advance the pointer.\n         * @param parser\n         */\n        function readHeader(parser) {\n\n            const magicNumber = parser.getInt()     //   view._getInt32(offset += 32, true);\n            const type = parser.getInt()\n            const version = parser.getInt()\n            const indexedFile = parser.getString()\n            const indexedFileSize = parser.getLong()\n            const indexedFileTS = parser.getLong()\n            const indexedFileMD5 = parser.getString()\n            const flags = parser.getInt()\n            if (version < 3 && (flags & SEQUENCE_DICTIONARY_FLAG) === SEQUENCE_DICTIONARY_FLAG) {\n                // readSequenceDictionary(dis);\n            }\n            if (version >= 3) {\n                let nProperties = parser.getInt()\n                while (nProperties-- > 0) {\n                    const key = parser.getString()\n                    const value = parser.getString()\n                }\n            }\n        }\n    }\n\n    get chromosomeNames() {\n        return Object.keys(this.chrIndex)\n    }\n\n\n    /**\n     * Fetch blocks for a particular genomic range.\n     *\n     * @param queryChr the sequence dictionary index of the chromosome\n     * @param min  genomic start position\n     * @param max  genomic end position\n     */\n    chunksForRange(queryChr, min, max) { //function (refId, min, max) {\n\n        const self = this\n        const chrIdx = this.chrIndex[queryChr]\n\n        if (chrIdx) {\n            const blocks = chrIdx.blocks\n            const longestFeature = chrIdx.longestFeature\n            const binWidth = chrIdx.binWidth\n            const adjustedPosition = Math.max(min - longestFeature, 0)\n            const startBinNumber = Math.floor(adjustedPosition / binWidth)\n\n            if (startBinNumber >= blocks.length) // are we off the end of the bin list, so return nothing\n                return []\n            else {\n                const endBinNumber = Math.min(Math.floor((max - 1) / binWidth), blocks.length - 1)\n\n                // By definition blocks are adjacent in the file for the liner index.  Combine them into one merged block\n                const startPos = blocks[startBinNumber].min\n                const endPos = blocks[endBinNumber].max\n                const size = endPos - startPos\n                if (size === 0) {\n                    return []\n                } else {\n                    const mergedBlock = {minv: {block: startPos, offset: 0}, maxv: {block: endPos, offset: 0}}\n                    return [mergedBlock]\n                }\n            }\n        } else {\n            return undefined\n        }\n    }\n}\n\nexport {parseTribbleIndex}\n","import {BGZip, igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\nimport {parseCsiIndex} from \"./csiIndex.js\"\nimport {parseBamIndex, parseTabixIndex} from \"./bamIndex.js\"\nimport {parseTribbleIndex} from \"../feature/tribble.js\"\n\nconst CSI1_MAGIC = 21582659 // CSI\\1\nconst CSI2_MAGIC = 38359875 // CSI\\2\nconst BAI_MAGIC = 21578050\nconst TABIX_MAGIC = 21578324\nconst TRIBBLE_MAGIC = 1480870228   //  byte[]{'T', 'I', 'D', 'X'};\n\n/**\n * @param indexURL\n * @param config\n * @param tabix\n *\n */\nasync function loadIndex(indexURL, config, genome) {\n\n    let arrayBuffer = await igvxhr.loadArrayBuffer(indexURL, buildOptions(config))\n    let dv = new DataView(arrayBuffer)\n\n    // Some indexs are bgzipped, specifically tabix, and csi.  Bam (bai) are not.  Tribble is usually not.\n    // Check first 2 bytes of file for gzip magic number, and inflate if neccessary\n    if (dv.getUint8(0) === 0x1f && dv.getUint8(1) === 0x8b) {    // gzipped\n        const inflate = BGZip.unbgzf(arrayBuffer)\n        arrayBuffer = inflate.buffer\n        dv = new DataView(arrayBuffer)\n    }\n\n    const magic = dv.getInt32(0, true)\n    switch (magic) {\n        case BAI_MAGIC:\n            return parseBamIndex(arrayBuffer, genome)\n        case TABIX_MAGIC:\n            return parseTabixIndex(arrayBuffer, genome)\n        case CSI1_MAGIC:\n            return parseCsiIndex(arrayBuffer, genome)\n        case TRIBBLE_MAGIC:\n            return parseTribbleIndex(arrayBuffer, genome)\n        case CSI2_MAGIC:\n            throw Error(\"CSI version 2 is not supported.\")\n        default:\n            throw Error(`Unrecognized index type: ${indexURL}`)\n    }\n}\n\nexport {loadIndex}","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nfunction getDataWrapper(data) {\n\n    if (typeof (data) == 'string' || data instanceof String) {\n        return new StringDataWrapper(data)\n    } else {\n        return new ByteArrayDataWrapper(data)\n    }\n}\n\n\n// Data might be a string, or an UInt8Array\nclass StringDataWrapper {\n\n    constructor(string) {\n        this.data = string\n        this.ptr = 0\n    }\n\n    nextLine() {\n        var start = this.ptr,\n            idx = this.data.indexOf('\\n', start),\n            data = this.data\n\n        if (idx > 0) {\n            this.ptr = idx + 1   // Advance pointer for next line\n            if (idx > start && data.charAt(idx - 1) === '\\r') {\n                // Trim CR manually in CR/LF sequence\n                return data.substring(start, idx - 1)\n            }\n            return data.substring(start, idx)\n        } else {\n            var length = data.length\n            this.ptr = length\n            // Return undefined only at the very end of the data\n            return (start >= length) ? undefined : data.substring(start)\n        }\n    }\n}\n\nclass ByteArrayDataWrapper {\n\n    constructor(array) {\n        this.data = array\n        this.length = this.data.length\n        this.ptr = 0\n    }\n\n    nextLine() {\n\n        var c, result\n        result = \"\"\n\n        if (this.ptr >= this.length) return undefined\n\n        for (var i = this.ptr; i < this.length; i++) {\n            c = String.fromCharCode(this.data[i])\n            if (c === '\\r') continue\n            if (c === '\\n') break\n            result = result + c\n        }\n\n        this.ptr = i + 1\n        return result\n    }\n\n}\n\nexport default getDataWrapper\n","import {buildOptions} from \"../util/igvUtils.js\"\nimport {BGZip, igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\n\n/**\n * Class to iterate line-by-line over a BGZipped text file.  This class is useful for iterating from the start of\n * the file.  Not useful for indexed queries.\n */\n\nclass BGZLineReader {\n\n    constructor(config) {\n        this.config = config\n        this.filePtr = 0\n        this.bufferPtr = 0\n        this.buffer\n    }\n\n    async nextLine() {\n\n        let result = undefined\n\n        try {\n            while (true) {\n                const length = this.buffer ? this.buffer.length : 0\n                while (this.bufferPtr < length) {\n                    const c = String.fromCharCode(this.buffer[this.bufferPtr++])\n                    if (c === '\\r') continue\n                    if (c === '\\n') {\n                        return result\n                    }\n                    result = result ? result + c : c\n                }\n                if (this.eof) {\n                    return result\n                } else {\n                    await this.readNextBlock()\n                }\n            }\n        } catch (e) {\n            console.warn(e)\n            this.eof = true\n            return result\n        }\n    }\n\n    async readNextBlock() {\n\n        const bsizeOptions = buildOptions(this.config, {\n            range: {\n                start: this.filePtr,\n                size: 26\n            }\n        })\n        const abuffer = await igvxhr.loadArrayBuffer(this.config.url, bsizeOptions)\n        const bufferSize = BGZip.bgzBlockSize(abuffer)\n\n        if (bufferSize === 0) {\n            this.eof = true\n            this.buffer = undefined\n        } else {\n\n            const options = buildOptions(this.config, {range: {start: this.filePtr, size: bufferSize}})\n            const data = await igvxhr.loadArrayBuffer(this.config.url, options)\n            if (data.byteLength < bufferSize) {\n                this.eof = true // Assumption\n            }\n            this.buffer = BGZip.unbgzf(data)\n            if(this.buffer.byteLength == 0) {\n                this.eof = true\n            }\n            this.bufferPtr = 0\n            this.filePtr += data.byteLength //data.byteLength;\n        }\n    }\n\n}\n\nexport default BGZLineReader","import {BGZip, igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\nimport {concatenateArrayBuffers} from \"../util/bufferUtils.js\"\n\nconst FEXTRA = 4  // gzip spec F.EXTRA flag\n\n/**\n * Return the block size for the data buffer.\n * @param data\n * @returns {number}\n */\nconst bgzBlockSize = (data) => {\n    const ba = ArrayBuffer.isView(data) ? data : new Uint8Array(data)\n    const bsize = (ba[17] << 8 | ba[16]) + 1\n    return bsize\n}\n\nclass BGZBlockLoader {\n\n    constructor(config) {\n        this.config = config\n        this.cacheBlocks = false != config.cacheBlocks   // Default to true\n        this.cache = undefined\n    }\n\n    /**\n     * Return inflated data from startBlock through endBlock as an UInt8Array\n     *\n     * @param minv minimum virtual pointer  {block, offset}\n     * @param maxv maximum virtual pointer  {block, offset}\n     * @returns {Promise<Uint8Array>}\n     */\n    async getData(minv, maxv) {\n\n        const startBlock = minv.block\n        const endBlock = maxv.block\n        const skipEnd = maxv.offset === 0\n\n        const blocks = await this.getInflatedBlocks(startBlock, endBlock, skipEnd)\n        if (blocks.length === 1) {\n            return blocks[0]\n        }\n\n        let len = 0\n        for (const b of blocks) {\n            len += b.byteLength\n        }\n        const c = new Uint8Array(len)\n        let offset = 0\n        for (const b of blocks) {\n            c.set(b, offset)\n            offset += b.byteLength\n        }\n        return c\n    }\n\n    /**\n     * Return the inflated data for the specified blocks as an array of Uint8Arrays.  This method is public so\n     * it can be unit tested. *\n     * @param startBlock\n     * @param endBlock\n     * @returns {Promise<*[Uint8Array]>}\n     */\n    async getInflatedBlocks(startBlock, endBlock, skipEnd) {\n\n        if (!this.cacheBlocks) {\n            const buffer = await this.loadBLockData(startBlock, endBlock, {skipEnd})\n            return inflateBlocks(buffer)\n        } else {\n\n            const c = this.cache\n            if (c &&\n                c.startBlock <= startBlock &&\n                (c.endBlock >= endBlock || skipEnd && c.nextEndBlock === endBlock)) {\n                //console.log(\"Complete overlap\")\n                const startOffset = startBlock - c.startBlock\n                const endOffset = endBlock - c.startBlock\n                return inflateBlocks(c.buffer, startOffset, endOffset)\n                // Don't update cache, still valid\n            } else {\n\n                let buffer\n                if (!c || (c.startBlock > endBlock || c.endBlock < startBlock)) {\n                    // no overlap with cache\n                    buffer = await this.loadBLockData(startBlock, endBlock, {skipEnd})\n                } else {\n\n                    //console.log(\"Some overlap\")\n                    const arrayBuffers = []\n\n                    // Load blocks preceding cache start, if any\n                    if (startBlock < c.startBlock) {\n                        // load first blocks\n                        const startBuffer = await this.loadBLockData(startBlock, c.startBlock, {skipEnd: true})\n                        arrayBuffers.push(startBuffer)\n                    }\n\n                    // Slice cached buffer as needed\n                    let cachedBuffer\n                    if (startBlock <= c.startBlock && endBlock >= c.endBlock) {\n                        cachedBuffer = c.buffer\n                    } else {\n                        const start = Math.max(0, startBlock - c.startBlock)\n                        let end\n                        if (endBlock >= c.endBlock) {\n                            end = c.buffer.byteLength\n                        } else {\n                            // We need to find the byte position of the end of \"endBlock\"\n                            const boundaries = findBlockBoundaries(c.buffer)\n                            for (let i = 0; i < boundaries.length - 1; i++) {\n                                if (c.startBlock + boundaries[i] === endBlock) {\n                                    end = boundaries[i + 1]\n                                    break\n                                }\n                            }\n                            // Do something if end not found\n                        }\n                        cachedBuffer = c.buffer.slice(start, end)\n                    }\n                    arrayBuffers.push(cachedBuffer)\n\n                    // Load end blocks, if any\n                    if (endBlock > c.endBlock) {\n                        const endBuffer = await this.loadBLockData(c.endBlock, endBlock, {skipStart: true, skipEnd})\n                        arrayBuffers.push(endBuffer)\n                    }\n\n                    buffer = concatenateArrayBuffers(arrayBuffers)\n                }\n\n                // If skipEnd === true we need to find boundary of last block in cache\n                let nextEndBlock = endBlock\n                if(skipEnd) {\n                    const boundaries = findBlockBoundaries(buffer)\n                    endBlock = boundaries[boundaries.length - 1]\n                }\n\n                this.cache = {startBlock, endBlock, nextEndBlock, buffer}\n                return inflateBlocks(buffer)\n            }\n        }\n    }\n\n    async loadBLockData(startBlock, endBlock, options) {\n\n        const config = this.config\n        const skipStart = options && options.skipStart\n        const skipEnd = options && options.skipEnd\n\n        // Get size of last block if not skipped\n        let lastBlockSize = 0\n        if (!skipEnd) {\n            const bsizeOptions = buildOptions(config, {range: {start: endBlock, size: 26}})\n            const abuffer = await igvxhr.loadArrayBuffer(config.url, bsizeOptions)\n            lastBlockSize = bgzBlockSize(abuffer)\n        }\n\n        if (skipStart) {\n            const bsizeOptions = buildOptions(config, {range: {start: startBlock, size: 26}})\n            const abuffer = await igvxhr.loadArrayBuffer(config.url, bsizeOptions)\n            startBlock += bgzBlockSize(abuffer)\n        }\n\n        // Load data for all blocks\n        const loadOptions = buildOptions(config, {\n            range: {\n                start: startBlock,\n                size: endBlock + lastBlockSize - startBlock\n            }\n        })\n\n        //console.log(`${this.config.name}  Loaded ${startBlock} - ${endBlock + lastBlockSize}   (${(endBlock + lastBlockSize - startBlock) / 1000} kb)`)\n\n        return igvxhr.loadArrayBuffer(config.url, loadOptions)\n    }\n}\n\nfunction findBlockBoundaries(arrayBuffer) {\n\n    const byteLengh = arrayBuffer.byteLength\n    let offset = 0\n    const blockBoundaries = [0]\n    while (offset < byteLengh) {\n        //console.log(\"Cache block \"  + offset)\n        const ba = new Uint8Array(arrayBuffer, offset)\n        const bsize = (ba[17] << 8 | ba[16]) + 1\n        offset += bsize\n        if (offset < byteLengh) {\n            blockBoundaries.push(offset)\n        }\n    }\n    return blockBoundaries\n}\n\n\n/**\n * Inflate compressed blocks within the data buffer*\n * @param data\n * @param startBlock - optional file location for start block.  Default == 0\n * @param endBlock - optional file location for last block to decompress.\n * @returns {*[]}\n */\nfunction inflateBlocks(data, startBlock, endBlock) {\n\n    startBlock = startBlock || 0\n\n    const oBlockList = []\n    let ptr = startBlock\n\n    const lim = data.byteLength - 18\n    while (ptr < lim) {\n        try {\n            //console.log(113873 + ptr)\n            const header = new Uint8Array(data, ptr, 18)\n            const xlen = (header[11] << 8) | (header[10])\n            const bsize = ((header[17] << 8) | (header[16]))  // Total block size, including header, minus 1\n            const start = 12 + xlen + ptr    // Start of CDATA\n            const bytesLeft = data.byteLength - start\n            const cDataSize = bsize - xlen - 18\n\n            if (bytesLeft < cDataSize || cDataSize <= 0) {\n                // This is unexpected.  Throw error?\n                break\n            }\n\n            const cdata = new Uint8Array(data, start, cDataSize)\n            const unc = BGZip.inflateRaw(cdata)\n            oBlockList.push(unc)\n\n            if (endBlock === ptr) {\n                break\n            } else {\n                // Advance to next block\n                ptr += bsize + 1\n            }\n\n        } catch (e) {\n            console.error(e)\n            break\n        }\n    }\n    return oBlockList\n}\n\n/**\n * Concat*\n * @param blocks\n * @returns {Uint8Array}\n */\nfunction concatenateBlocks(blocks) {\n\n    // if (arrays.length === 1) {\n    //     return arrays[0]\n    // }\n\n    let len = 0\n    for (const b of blocks) {\n        len += b.byteLength\n    }\n    const c = new Uint8Array(len)\n    let offset = 0\n    for (const b of blocks) {\n        c.set(b, offset)\n        offset += b.byteLength\n    }\n    return c\n}\n\n\nexport {BGZBlockLoader as default, inflateBlocks, findBlockBoundaries}","\nfunction concatenateArrayBuffers(arrayBuffers) {\n\n    if (arrayBuffers.length === 1) {\n        return arrayBuffers[0]\n    }\n\n    let len = 0\n    for (const b of arrayBuffers) {\n        len += b.byteLength\n    }\n    const c = new Uint8Array(len)\n    let offset = 0\n    for (const b of arrayBuffers) {\n        c.set(new Uint8Array(b), offset)\n        offset += b.byteLength\n    }\n    return c.buffer\n}\n\nexport {concatenateArrayBuffers}","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport FeatureParser from \"./featureParser.js\"\nimport SegParser from \"./segParser.js\"\nimport VcfParser from \"../variant/vcfParser.js\"\nimport {BGZip, FileUtils, igvxhr, URIUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions, isDataURL} from \"../util/igvUtils.js\"\nimport GWASParser from \"../gwas/gwasParser.js\"\nimport AEDParser from \"../aed/AEDParser.js\"\nimport {loadIndex} from \"../bam/indexFactory.js\"\nimport getDataWrapper from \"./dataWrapper.js\"\nimport BGZLineReader from \"../util/bgzLineReader.js\"\nimport BGZBlockLoader from \"../bam/bgzBlockLoader.js\"\n\n/**\n * Reader for \"bed like\" files (tab delimited files with 1 feature per line: bed, gff, vcf, etc)\n *\n * @param config\n * @constructor\n */\nclass FeatureFileReader {\n\n    constructor(config, genome) {\n\n        var uriParts\n\n        this.config = config || {}\n        this.genome = genome\n        this.indexURL = config.indexURL\n        this.indexed = config.indexed || this.indexURL !== undefined\n        this.queryable = this.indexed\n\n        if (FileUtils.isFile(this.config.url)) {\n            this.filename = this.config.url.name\n        } else if (isDataURL(this.config.url)) {\n            this.indexed = false  // by definition\n            this.dataURI = config.url\n        } else {\n            uriParts = URIUtils.parseUri(this.config.url)\n            this.filename = config.filename || uriParts.file\n        }\n\n        this.parser = this.getParser(this.config)\n\n        if (this.config.format === \"vcf\" && !this.config.indexURL) {\n            console.warn(\"Warning: index file not specified.  The entire vcf file will be loaded.\")\n        }\n\n    }\n\n    async defaultVisibilityWindow() {\n        if (this.config.indexURL) {\n            const index = await this.getIndex()\n            if (index && index.lastBlockPosition) {\n                let gl = 0\n                const s = 10000\n                for (let c of index.chromosomeNames) {\n                    const chromosome = this.genome.getChromosome(c)\n                    if (chromosome) {\n                        gl += chromosome.bpLength\n                    }\n                }\n                return Math.round((gl / index.lastBlockPosition) * s)\n            }\n        }\n    }\n\n    /**\n     * Return a promise to load features for the genomic interval\n     * @param chr\n     * @param start\n     * @param end\n     */\n    async readFeatures(chr, start, end) {\n\n        const index = await this.getIndex()\n        if (index) {\n            this.indexed = true\n            return this.loadFeaturesWithIndex(chr, start, end)\n        } else if (this.dataURI) {\n            this.indexed = false\n            return this.loadFeaturesFromDataURI()\n        } else {\n            this.indexed = false\n            return this.loadFeaturesNoIndex()\n        }\n\n    }\n\n    async readHeader() {\n\n        if (this.dataURI) {\n            await this.loadFeaturesFromDataURI(this.dataURI)\n            return this.header\n        } else {\n\n            if (this.config.indexURL) {\n                const index = await this.getIndex()\n                if (!index) {\n                    // Note - it should be impossible to get here\n                    throw new Error(\"Unable to load index: \" + this.config.indexURL)\n                }\n\n                let dataWrapper\n                if (index.tabix) {\n                    this._blockLoader = new BGZBlockLoader(this.config);\n                    dataWrapper = new BGZLineReader(this.config)\n                } else {\n                    // Tribble\n                    const maxSize = Object.values(index.chrIndex)\n                        .flatMap(chr => chr.blocks)\n                        .map(block => block.max)\n                        .reduce((previous, current) =>\n                            Math.min(previous, current), Number.MAX_SAFE_INTEGER)\n\n                    const options = buildOptions(this.config, {bgz: index.tabix, range: {start: 0, size: maxSize}})\n                    const data = await igvxhr.loadString(this.config.url, options)\n                    dataWrapper = getDataWrapper(data)\n                }\n\n\n                this.header = await this.parser.parseHeader(dataWrapper)  // Cache header, might be needed to parse features\n                return this.header\n\n            } else {\n                // If this is a non-indexed file we will load all features in advance\n                const options = buildOptions(this.config)\n                const data = await igvxhr.loadString(this.config.url, options)\n                let dataWrapper = getDataWrapper(data)\n                this.header = await this.parser.parseHeader(dataWrapper)\n\n                // Reset data wrapper and parse features\n                dataWrapper = getDataWrapper(data)\n                this.features = await this.parser.parseFeatures(dataWrapper)   // cache features\n                return this.header\n            }\n        }\n    }\n\n\n    getParser(config) {\n\n        switch (config.format) {\n            case \"vcf\":\n                return new VcfParser(config)\n            case \"seg\" :\n                return new SegParser(\"seg\")\n            case \"mut\":\n                return new SegParser(\"mut\")\n            case \"maf\":\n                return new SegParser(\"maf\")\n            case \"gwas\" :\n                return new GWASParser(config)\n            case \"aed\" :\n                return new AEDParser(config)\n            default:\n                return new FeatureParser(config)\n        }\n    }\n\n    async loadFeaturesNoIndex() {\n\n        if (this.features) {\n            // An optimization hack for non-indexed files, features are temporarily cached when header is read.\n            const tmp = this.features\n            delete this.features\n            return tmp\n        } else {\n            const options = buildOptions(this.config)    // Add oauth token, if any\n            const data = await igvxhr.loadString(this.config.url, options)\n            if (!this.header) {\n                const dataWrapper = getDataWrapper(data)\n                this.header = await this.parser.parseHeader(dataWrapper)\n            }\n            const dataWrapper = getDataWrapper(data)\n            const features = await this.parser.parseFeatures(dataWrapper)   // <= PARSING DONE HERE\n            return features\n        }\n    }\n\n    async loadFeaturesWithIndex(chr, start, end) {\n\n        // insure that header has been loaded -- tabix _blockLoader is initialized as side effect\n        if(!this.dataURI && !this.header) {\n            await this.readHeader()\n        }\n\n        //console.log(\"Using index\"\n        const config = this.config\n        const parser = this.parser\n        const tabix = this.index.tabix\n        const refId = tabix ? this.index.sequenceIndexMap[chr] : chr\n        if (refId === undefined) {\n            return []\n        }\n\n        const genome = this.genome\n        const chunks = this.index.chunksForRange(refId, start, end)\n        if (!chunks || chunks.length === 0) {\n            return []\n        } else {\n            const allFeatures = []\n            for (let chunk of chunks) {\n\n                let inflated\n                if (tabix) {\n                    inflated = await this._blockLoader.getData(chunk.minv, chunk.maxv)\n                } else {\n                    const options = buildOptions(config, {\n                        range: {\n                            start: chunk.minv.block,\n                            size: chunk.maxv.block - chunk.minv.block + 1\n                        }\n                    })\n                    inflated = await igvxhr.loadString(config.url, options)\n                }\n\n                const slicedData = chunk.minv.offset ? inflated.slice(chunk.minv.offset) : inflated\n                const dataWrapper = getDataWrapper(slicedData)\n                let slicedFeatures = await parser.parseFeatures(dataWrapper)\n\n                // Filter psuedo-features (e.g. created mates for VCF SV records)\n                slicedFeatures = slicedFeatures.filter(f => f._f === undefined)\n\n                // Filter features not in requested range.\n                let inInterval = false\n                for (let i = 0; i < slicedFeatures.length; i++) {\n                    const f = slicedFeatures[i]\n\n                    const canonicalChromosome = genome ? genome.getChromosomeName(f.chr) : f.chr\n                    if (canonicalChromosome !== chr) {\n                        if (allFeatures.length === 0) {\n                            continue  //adjacent chr to the left\n                        } else {\n                            break //adjacent chr to the right\n                        }\n                    }\n                    if (f.start > end) {\n                        allFeatures.push(f)  // First feature beyond interval\n                        break\n                    }\n                    if (f.end >= start && f.start <= end) {\n                        if (!inInterval) {\n                            inInterval = true\n                            if (i > 0) {\n                                allFeatures.push(slicedFeatures[i - 1])\n                            } else {\n                                // TODO -- get block before this one for first feature;\n                            }\n                        }\n                        allFeatures.push(f)\n                    }\n                }\n\n            }\n            allFeatures.sort(function (a, b) {\n                return a.start - b.start\n            })\n\n            return allFeatures\n        }\n    }\n\n    async getIndex() {\n        if (this.index) {\n            return this.index\n        } else if (this.config.indexURL) {\n            this.index = await this.loadIndex()\n            return this.index\n        }\n    }\n\n    /**\n     * Return a Promise for the async loaded index\n     */\n    async loadIndex() {\n        const indexURL = this.config.indexURL\n        return loadIndex(indexURL, this.config, this.genome)\n    }\n\n    async loadFeaturesFromDataURI() {\n\n        if (this.features) {\n            // An optimization hack for non-indexed files, features are temporarily cached when header is read.\n            const tmp = this.features\n            delete this.features\n            return tmp\n        } else {\n            const plain = BGZip.decodeDataURI(this.dataURI)\n            let dataWrapper = getDataWrapper(plain)\n            this.header = await this.parser.parseHeader(dataWrapper)\n            if (this.header instanceof String && this.header.startsWith(\"##gff-version 3\")) {\n                this.format = 'gff3'\n            }\n\n            dataWrapper = getDataWrapper(plain)\n            this.features = await this.parser.parseFeatures(dataWrapper)\n            return this.features\n        }\n    }\n\n}\n\nexport default FeatureFileReader\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\nimport {igvxhr, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst isString = StringUtils.isString\n\n\nclass CustomServiceReader {\n    constructor(config) {\n        this.config = config\n    }\n\n    async readFeatures(chr, start, end) {\n\n        let url\n        if (typeof this.config.url === 'function') {\n            url = this.config.url({chr, start, end})\n        } else {\n            url = this.config.url\n                .replace(\"$CHR\", chr)\n                .replace(\"$START\", start)\n                .replace(\"$END\", end)\n        }\n\n        let config = Object.assign({}, this.config)\n        if (this.config.body !== undefined) {\n            if (typeof this.config.body === 'function') {\n                config.body = this.config.body({chr, start, end})\n            } else {\n                config.body =\n                    this.config.body\n                        .replace(\"$CHR\", chr)\n                        .replace(\"$START\", start)\n                        .replace(\"$END\", end)\n            }\n        }\n\n\n        let features\n        const data = await igvxhr.load(url, config)\n        if (data) {\n            if (typeof this.config.parser === \"function\") {\n                features = this.config.parser(data)\n            } else if (isString(data)) {\n                features = JSON.parse(data)\n            } else {\n                features = data\n            }\n        }\n        if (this.config.mappings) {\n            let mappingKeys = Object.keys(this.config.mappings)\n            for (let f of features) {\n                for (let key of mappingKeys) {\n                    f[key] = f[this.config.mappings[key]]\n                }\n            }\n        }\n        return features\n    }\n}\n\nexport default CustomServiceReader\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst UCSCServiceReader = function (config, genome) {\n    this.config = config\n    this.genome = genome\n    this.expandQueryInterval = false\n}\n\nUCSCServiceReader.prototype.readFeatures = function (chr, start, end) {\n\n    const s = Math.max(0, Math.floor(start))\n    let e = Math.ceil(end)\n\n    if (this.genome) {\n        const c = this.genome.getChromosome(chr)\n        if (c && e > c.bpLength) {\n            e = c.bpLength\n        }\n    }\n\n\n    const url = this.config.url + '?db=' + this.config.db + '&table=' + this.config.tableName + '&chr=' + chr + '&start=' + s + '&end=' + e\n\n    return igvxhr.loadJson(url, this.config)\n        .then(function (data) {\n            if (data) {\n                data.forEach(function (sample) {\n                    if (sample.hasOwnProperty('exonStarts') &&\n                        sample.hasOwnProperty('exonEnds') &&\n                        sample.hasOwnProperty('exonCount') &&\n                        sample.hasOwnProperty('cdsStart') &&\n                        sample.hasOwnProperty('cdsEnd')) {\n                        addExons(sample)\n                    }\n                })\n                return data\n            } else {\n                return null\n            }\n        })\n}\n\nfunction addExons(sample) {\n    var exonCount, exonStarts, exonEnds, exons, eStart, eEnd\n    exonCount = sample['exonCount']\n    exonStarts = sample['exonStarts'].split(',')\n    exonEnds = sample['exonEnds'].split(',')\n    exons = []\n\n    for (var i = 0; i < exonCount; i++) {\n        eStart = parseInt(exonStarts[i])\n        eEnd = parseInt(exonEnds[i])\n        var exon = {start: eStart, end: eEnd}\n\n        if (sample.cdsStart > eEnd || sample.cdsEnd < sample.cdsStart) exon.utr = true   // Entire exon is UTR\n        if (sample.cdsStart >= eStart && sample.cdsStart <= eEnd) exon.cdStart = sample.cdsStart\n        if (sample.cdsEnd >= eStart && sample.cdsEnd <= eEnd) exon.cdEnd = sample.cdsEnd\n\n        exons.push(exon)\n    }\n\n    sample.exons = exons\n}\n\nexport default UCSCServiceReader","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2021 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {isExon, isTranscript, isTranscriptPart} from \"./so.js\"\nimport {GFFFeature, GFFTranscript} from \"./gffFeature.js\"\nimport {parseAttributeString} from \"./gff.js\"\n\nconst gffNameFields = [\"Name\", \"gene_name\", \"gene\", \"gene_id\", \"alias\", \"locus\", \"name\"]\n\nclass GFFHelper {\n\n    constructor(options) {\n        this.format = options.format\n        this.nameField = options.nameField\n        this.filterTypes = options.filterTypes === undefined ?\n            new Set(['chromosome']) :\n            new Set(options.filterTypes)\n    }\n\n    combineFeatures(features, genomicInterval) {\n\n        let combinedFeatures\n\n        const filterTypes = this.filterTypes\n        features = features.filter(f => filterTypes === undefined || !filterTypes.has(f.type))\n\n        if (\"gff3\" === this.format) {\n            const tmp = this.combineFeaturesById(features)\n            combinedFeatures = this.combineFeaturesByType(tmp)\n        } else {\n            combinedFeatures = this.combineFeaturesByType(features)\n        }\n        combinedFeatures.sort(function (a, b) {\n            return a.start - b.start\n        })\n        this.numberExons(combinedFeatures, genomicInterval)\n        this.nameFeatures(combinedFeatures)\n        return combinedFeatures\n    }\n\n    /**\n     * Combine multiple non-transcript model features with the same ID on the same chromosome into a single feature.\n     * Features that are part of the transcript model (e.g. exon, mRNA, etc) are combined later.\n     *\n     * @param features\n     * @returns {[]}\n     */\n    combineFeaturesById(features) {\n\n        const chrIdMap = new Map()\n        const combinedFeatures = []\n\n        for (let f of features) {\n            if (isTranscriptPart(f.type) || isTranscript(f.type) || !f.id) {\n                combinedFeatures.push(f)\n            } else {\n                let idMap = chrIdMap.get(f.chr)\n                if (!idMap) {\n                    idMap = new Map()\n                    chrIdMap.set(f.chr, idMap)\n                }\n\n                let featureArray = idMap.get(f.id)\n                if (featureArray) {\n                    featureArray.push(f)\n                } else {\n                    idMap.set(f.id, [f])\n                }\n            }\n        }\n\n        for (let idMap of chrIdMap.values()) {\n            for (let featureArray of idMap.values()) {\n                if (featureArray.length > 1) {\n                    // Use the first feature as prototypical (for column 9 attributes), and adjust start/end\n                    // Parts are represented as \"exons\", as that is how they are presented visually\n                    const cf = featureArray[0]\n                    cf.exons = []\n                    for (let f of featureArray) {\n                        cf.start = Math.min(cf.start, f.start)\n                        cf.end = Math.max(cf.end, f.end)\n                        cf.exons.push({\n                            start: f.start,\n                            end: f.end\n                        })\n                    }\n                    combinedFeatures.push(cf)\n                } else {\n                    combinedFeatures.push(featureArray[0])\n                }\n            }\n        }\n\n        return combinedFeatures\n    }\n\n    combineFeaturesByType(features) {\n\n        // Build dictionary of genes\n        const genes = features.filter(f => \"gene\" === f.type || f.type.endsWith(\"_gene\"))\n        const geneMap = Object.create(null)\n        for (let g of genes) {\n            geneMap[g.id] = g\n        }\n\n        // 1. Build dictionary of transcripts\n        const transcripts = Object.create(null)\n        const combinedFeatures = []\n        const consumedFeatures = new Set()\n        const filterTypes = this.filterTypes\n\n        features = features.filter(f => filterTypes === undefined || !filterTypes.has(f.type))\n\n        for (let f of features) {\n\n            if (f.type === \"biological_region\") {\n                console.log()\n            }\n\n            if (isTranscript(f.type)) {\n                const transcriptId = f.id // getAttribute(f.attributeString, \"transcript_id\", /\\s+/);\n                if (undefined !== transcriptId) {\n                    const gffTranscript = new GFFTranscript(f)\n                    transcripts[transcriptId] = gffTranscript\n                    combinedFeatures.push(gffTranscript)\n                    consumedFeatures.add(f)\n                    const g = geneMap[f.parent]\n                    if (g) {\n                        gffTranscript.geneObject = g\n                        consumedFeatures.add(g)\n                    }\n                }\n            }\n        }\n\n        // Add exons and transcript parts\n        for (let f of features) {\n            if (isTranscriptPart(f.type)) {\n                const parents = getParents(f)\n                if (parents) {\n                    for (let id of parents) {\n\n                        let transcript = transcripts[id]\n                        if (!transcript && this.format === \"gtf\") {\n                            // GTF does not require explicit transcript record, start one with this feature.\n                            const psuedoTranscript = Object.assign({}, f)\n                            psuedoTranscript.type = \"transcript\"\n                            transcript = new GFFTranscript(psuedoTranscript)\n                            transcripts[id] = transcript\n                            combinedFeatures.push(transcript)\n                        }\n                        if (transcript !== undefined) {\n\n                            if (isExon(f.type)) {\n                                if (parents.length > 1) {\n                                    // Make a copy as exon can be modified differently by CDS, etc, for each transcript\n                                    const e2 = new GFFFeature(f)\n                                    transcript.addExon(e2)\n                                } else {\n                                    transcript.addExon(f)\n                                }\n                            } else {\n                                transcript.addPart(f)\n                            }\n                            consumedFeatures.add(f)\n                        }\n                    }\n                }\n            }\n        }\n\n        // Finish transcripts\n        combinedFeatures.forEach(function (f) {\n            if (typeof f.finish === \"function\") {\n                f.finish()\n            }\n        })\n\n        // Add other features\n        const others = features.filter(f => !consumedFeatures.has(f))\n        for (let f of others) {\n            combinedFeatures.push(f)\n        }\n\n        return combinedFeatures\n\n        function getParents(f) {\n            if (f.parent && f.parent.trim() !== \"\") {\n                return f.parent.trim().split(\",\")\n            } else {\n                return null\n            }\n        }\n    }\n\n    numberExons(features, genomicInterval) {\n\n        for (let f of features) {\n            if (f.exons &&\n                (!genomicInterval ||\n                    (f.end <= genomicInterval.end && f.start > genomicInterval.start))) {\n                for (let i = 0; i < f.exons.length; i++) {\n                    const exon = f.exons[i]\n                    exon.number = f.strand === \"-\" ? f.exons.length - i : i + 1\n                }\n            }\n        }\n    }\n\n    nameFeatures(features) {\n        // Find name (label) property\n        for (let f of features) {\n            if (f.attributeString) {\n                const delim = ('gff3' === this.format) ? '=' : ' '\n                const attributes = parseAttributeString(f.attributeString, delim)\n                const attributesMap = new Map(attributes)\n                if (this.nameField) {\n                    f.name = attributesMap.get(this.nameField)\n                } else {\n                    for (let nameField of gffNameFields) {\n                        if (attributesMap.has(nameField)) {\n                            f.name = attributesMap.get(nameField)\n                            break\n                        }\n                    }\n                }\n            }\n        }\n    }\n}\n\n\nexport default GFFHelper\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2015 UC San Diego\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst GtexReader = function (config) {\n\n    this.config = config\n    this.url = config.url\n    this.tissueId = config.tissueSiteDetailId\n    this.indexed = true\n    this.datasetId = config.datasetId || \"gtex_v8\"\n}\n\nGtexReader.prototype.readFeatures = async function (chr, bpStart, bpEnd) {\n\n\n    let self = this,\n        queryChr = chr.startsWith(\"chr\") ? chr : \"chr\" + chr,\n        queryStart = Math.floor(bpStart),\n        queryEnd = Math.ceil(bpEnd),\n        datasetId = this.datasetId,\n        queryURL = this.url + \"?chromosome=\" + queryChr + \"&start=\" + queryStart + \"&end=\" + queryEnd +\n            \"&tissueSiteDetailId=\" + this.tissueId + \"&datasetId=\" + datasetId\n\n    const json = await igvxhr.loadJson(queryURL, {\n        withCredentials: self.config.withCredentials\n    })\n    if (json && json.singleTissueEqtl) {\n        //variants = json.variants;\n        //variants.sort(function (a, b) {\n        //    return a.POS - b.POS;\n        //});\n        //source.cache = new FeatureCache(chr, queryStart, queryEnd, variants);\n\n        json.singleTissueEqtl.forEach(function (eqtl) {\n            eqtl.chr = eqtl.chromosome\n            eqtl.position = eqtl.pos\n            eqtl.start = eqtl.pos - 1\n            eqtl.end = eqtl.start + 1\n            eqtl.snp = eqtl.snpId\n            eqtl.geneName = eqtl.geneSymbol\n            eqtl.geneId = eqtl.gencodeId\n\n        })\n\n        return json.singleTissueEqtl\n    } else {\n        return undefined\n    }\n}\n\nexport default GtexReader","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\n\n// Experimental class for fetching features from an mpg webservice.\n// http://immvar.broadinstitute.org:3000/load_data?chromosome=&start=&end=&categories=\n\nconst ImmVarReader = function (config) {\n\n    this.config = config\n    this.url = config.url\n    this.cellConditionId = config.cellConditionId\n    this.valueThreshold = config.valueThreshold ? config.valueThreshold : 5E-2\n\n}\n\nImmVarReader.prototype.readFeatures = function (queryChr, queryStart, queryEnd) {\n\n    var self = this,\n        queryURL = this.url + \"?chromosome=\" + queryChr + \"&start=\" + queryStart + \"&end=\" + queryEnd +\n            \"&cell_condition_id=\" + this.cellConditionId\n\n    return new Promise(function (fulfill, reject) {\n        igvxhr.loadJson(queryURL, {\n            withCredentials: self.config.withCredentials\n        }).then(function (json) {\n\n            if (json) {\n                //variants = json.variants;\n                //variants.sort(function (a, b) {\n                //    return a.POS - b.POS;\n                //});\n                //source.cache = new FeatureCache(chr, queryStart, queryEnd, variants);\n\n                json.eqtls.forEach(function (eqtl) {\n                    eqtl.chr = eqtl.chromosome\n                    eqtl.start = eqtl.position\n                    eqtl.end = eqtl.position + 1\n                })\n\n                fulfill(json.eqtls)\n            } else {\n                fulfill(null)\n            }\n\n        }).catch(function (error) {\n            reject(error)\n        })\n\n    })\n}\n\nexport default ImmVarReader\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst apiKey = igvxhr.apiKey\n\nfunction ga4ghGet(options) {\n    var url = options.url + \"/\" + options.entity + \"/\" + options.entityId\n    options.headers = ga4ghHeaders()\n    return igvxhr.loadJson(url, options)      // Returns a promise\n}\n\nfunction ga4ghSearch(options) {\n\n    return new Promise(function (fulfill, reject) {\n        var results = options.results ? options.results : [],\n            url = options.url,\n            body = options.body,\n            decode = options.decode,\n            paramSeparator = \"?\",\n            fields = options.fields  // Partial response\n\n\n        if (apiKey) {\n            url = url + paramSeparator + \"key=\" + apiKey\n            paramSeparator = \"&\"\n        }\n\n        if (fields) {\n            url = url + paramSeparator + \"fields=\" + fields\n        }\n\n\n        // Start the recursive load cycle.  Data is fetched in chunks, if more data is available a \"nextPageToken\" is returned.\n        return loadChunk()\n\n        function loadChunk(pageToken) {\n\n            if (pageToken) {\n                body.pageToken = pageToken\n            } else {\n                if (body.pageToken !== undefined) delete body.pageToken    // Remove previous page token, if any\n            }\n\n            var sendData = JSON.stringify(body)\n\n            igvxhr.loadJson(url, {\n                sendData: sendData,\n                contentType: \"application/json\",\n                headers: ga4ghHeaders(),\n                //    oauthToken: ga4ghToken()\n            })\n                .then(function (json) {\n                    var nextPageToken, tmp\n\n                    if (json) {\n\n                        tmp = decode ? decode(json) : json\n\n                        if (tmp) {\n\n                            tmp.forEach(function (a) {\n                                var keep = true           // TODO -- conditionally keep (downsample)\n                                if (keep) {\n                                    results.push(a)\n                                }\n                            })\n                        }\n\n\n                        nextPageToken = json[\"nextPageToken\"]\n\n                        if (nextPageToken) {\n                            loadChunk(nextPageToken)\n                        } else {\n                            fulfill(results)\n                        }\n                    } else {\n                        fulfill(results)\n                    }\n\n                })\n                .catch(function (error) {\n                    reject(error)\n                })\n        }\n\n    })\n\n\n}\n\nfunction ga4ghSearchReadGroupSets(options) {\n\n    ga4ghSearch({\n        url: options.url + \"/readgroupsets/search\",\n        body: {\n            \"datasetIds\": [options.datasetId],\n\n            \"pageSize\": \"10000\"\n        },\n        decode: function (json) {\n            return json.readGroupSets\n        }\n    }).then(function (results) {\n        options.success(results)\n    }).catch(function (error) {\n        console.log(error)\n    })\n}\n\nfunction ga4ghSearchVariantSets(options) {\n\n    ga4ghSearch({\n        url: options.url + \"/variantsets/search\",\n        body: {\n            \"datasetIds\": [options.datasetId],\n            \"pageSize\": \"10000\"\n        },\n        decode: function (json) {\n            return json.variantSets\n        }\n    }).then(function (results) {\n        options.success(results)\n    }).catch(function (error) {\n        console.log(error)\n    })\n}\n\nfunction ga4ghSearchCallSets(options) {\n\n    // When searching by dataset id, first must get variant sets.\n    if (options.datasetId) {\n\n        ga4ghSearchVariantSets({\n\n            url: options.url,\n            datasetId: options.datasetId,\n            success: function (results) {\n\n                var variantSetIds = []\n                results.forEach(function (vs) {\n                    variantSetIds.push(vs.id)\n                })\n\n                // Substitute variantSetIds for datasetId\n                options.datasetId = undefined\n                options.variantSetIds = variantSetIds\n                ga4ghSearchCallSets(options)\n\n\n            }\n        })\n\n    } else {\n\n        ga4ghSearch({\n            url: options.url + \"/callsets/search\",\n            body: {\n                \"variantSetIds\": options.variantSetIds,\n                \"pageSize\": \"10000\"\n            },\n            decode: function (json) {\n\n                if (json.callSets) json.callSets.forEach(function (cs) {\n                    cs.variantSetIds = options.variantSetIds\n                })\n\n                return json.callSets\n            }\n        }).then(function (results) {\n            options.success(results)\n        }).catch(function (error) {\n            console.log(error)\n        })\n    }\n}\n\nfunction ga4ghSearchReadAndCallSets(options) {\n\n    ga4ghSearchReadGroupSets({\n        url: options.url,\n        datasetId: options.datasetId,\n        success: function (readGroupSets) {\n            ga4ghSearchCallSets({\n                url: options.url,\n                datasetId: options.datasetId,\n                success: function (callSets) {\n\n                    // Merge call sets and read group sets\n\n                    var csHash = {}\n                    callSets.forEach(function (cs) {\n                        csHash[cs.name] = cs\n                    })\n\n                    var mergedResults = []\n                    readGroupSets.forEach(function (rg) {\n                        var m = {readGroupSetId: rg.id, name: rg.name, datasetId: options.datasetId},\n                            cs = csHash[rg.name]\n                        if (cs) {\n                            m.callSetId = cs.id\n                            m.variantSetIds = cs.variantSetIds\n                        }\n                        mergedResults.push(m)\n                    })\n\n                    options.success(mergedResults)\n\n                }\n            })\n        }\n    })\n\n}\n\nfunction ga4ghHeaders() {\n    return {\n        \"Cache-Control\": \"no-cache\"\n    }\n}\n\nexport {\n    ga4ghGet, ga4ghSearch, ga4ghSearchReadGroupSets, ga4ghSearchVariantSets,\n    ga4ghSearchCallSets, ga4ghSearchReadAndCallSets\n}\n\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {ga4ghGet, ga4ghSearch} from './ga4ghHelper.js'\nimport {createGAVariant} from \"../variant/variant.js\"\n\nconst Ga4ghVariantReader = function (config, genome) {\n\n    this.config = config\n    this.genome = genome\n    this.url = config.url\n    this.variantSetId = config.variantSetId\n    this.callSetIds = config.callSetIds\n    this.includeCalls = (config.includeCalls === undefined ? true : config.includeCalls)\n\n}\n\n// Simulate a VCF file header\nGa4ghVariantReader.prototype.readHeader = function () {\n\n    var self = this\n\n\n    if (self.header) {\n        return Promise.resolve(self.header)\n    } else {\n\n        self.header = {}\n\n        if (self.includeCalls === false) {\n            return Promise.resolve(self.header)\n        } else {\n\n            var readURL = self.url + \"/callsets/search\"\n\n            return ga4ghSearch({\n                url: readURL,\n                fields: \"nextPageToken,callSets(id,name)\",\n                body: {\n                    \"variantSetIds\": (Array.isArray(self.variantSetId) ? self.variantSetId : [self.variantSetId]),\n                    \"pageSize\": \"10000\"\n                },\n                decode: function (json) {\n                    // If specific callSetIds are specified filter to those\n                    if (self.callSetIds) {\n                        var callSets = [],\n                            csIdSet = new Set()\n\n                        self.callSetIds.forEach(function (csid) {\n                            csIdSet.add(csid)\n                        })\n\n                        json.callSets.forEach(function (cs) {\n                            if (csIdSet.has(cs.id)) {\n                                callSets.push(cs)\n                            }\n                        })\n                        return callSets\n                    } else {\n                        return json.callSets\n                    }\n                }\n            })\n                .then(function (callSets) {\n                    self.header.callSets = callSets\n                    return self.header\n                })\n        }\n    }\n}\n\n\nGa4ghVariantReader.prototype.readFeatures = function (chr, bpStart, bpEnd) {\n\n    const self = this\n    const genome = this.genome\n\n    return self.readHeader()\n\n        .then(function (header) {\n            return getChrAliasTable()\n        })\n\n        .then(function (chrAliasTable) {\n\n            var queryChr = chrAliasTable.hasOwnProperty(chr) ? chrAliasTable[chr] : chr,\n                readURL = self.url + \"/variants/search\"\n\n            return ga4ghSearch({\n                url: readURL,\n                fields: (self.includeCalls ? undefined : \"nextPageToken,variants(id,variantSetId,names,referenceName,start,end,referenceBases,alternateBases,quality,filter,info)\"),\n                body: {\n                    \"variantSetIds\": (Array.isArray(self.variantSetId) ? self.variantSetId : [self.variantSetId]),\n                    \"callSetIds\": (self.callSetIds ? self.callSetIds : undefined),\n                    \"referenceName\": queryChr,\n                    \"start\": bpStart.toString(),\n                    \"end\": bpEnd.toString(),\n                    \"pageSize\": \"10000\"\n                },\n                decode: function (json) {\n\n                    var v\n\n                    var variants = []\n\n                    json.variants.forEach(function (json) {\n\n                        v = createGAVariant(json)\n\n                        if (!v.isRefBlock()) {\n                            variants.push(v)\n                        }\n                    })\n\n                    return variants\n                }\n            })\n        })\n\n\n    function getChrAliasTable() {\n\n        return new Promise(function (fulfill, reject) {\n\n            if (self.chrAliasTable) {\n                fulfill(self.chrAliasTable)\n            } else {\n                self.readMetadata().then(function (json) {\n\n                    self.metadata = json.metadata\n                    self.chrAliasTable = {}\n\n                    if (json.referenceBounds && genome) {\n\n                        json.referenceBounds.forEach(function (rb) {\n                            var refName = rb.referenceName,\n                                alias = genome.getChromosomeName(refName)\n                            self.chrAliasTable[alias] = refName\n\n                        })\n                    }\n                    fulfill(self.chrAliasTable)\n\n                })\n            }\n\n        })\n    }\n\n}\n\n\nGa4ghVariantReader.prototype.readMetadata = function () {\n\n    return ga4ghGet({\n        url: this.url,\n        entity: \"variantsets\",\n        entityId: this.variantSetId\n    })\n}\n\nexport default Ga4ghVariantReader\n","import {igvxhr, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\nclass CivicReader {\n\n    constructor(config) {\n        this.config = config\n    }\n\n    async readFeatures(chr, start, end) {\n\n        const json = await igvxhr.loadJson(this.config.url + \"/variants/?count=50000\")\n        const records = json.records\n        const features = []\n\n        for (let record of records) {\n\n            if (record.coordinates) {\n\n                const id = record.id\n                const coordinates = record.coordinates\n\n                if (coordinates.chromosome) {\n                    features.push(\n                        new CivicVariant(\n                            coordinates.chromosome,\n                            coordinates.start - 1,     // UCSC 0 convention\n                            coordinates.stop,\n                            record\n                        ))\n                }\n\n                if (coordinates.chromosome2) {\n                    features.push(\n                        new CivicVariant(\n                            coordinates.chromosome2,\n                            coordinates.start2 - 1,     // UCSC 0 convention\n                            coordinates.stop2,\n                            record\n                        ))\n                }\n            }\n\n        }\n        return features\n\n    }\n}\n\nclass CivicVariant {\n\n    constructor(chr, start, end, record) {\n        this.chr = chr\n        this.start = start\n        this.end = end\n        this.id = record.id\n        this.entrezName = record.entrez_name\n        this.name = record.name\n        this.actionabilityScore = record.civic_actionability_score\n\n        if (record.coordinates.reference_bases) {\n            this.refBases = record.coordinates.reference_bases\n        }\n        if (record.coordinates.variant_bases) {\n            this.altBases = record.coordinates.variant_bases\n        }\n        if (record.variant_types) {\n            this.variant_types = record.variant_types\n        }\n\n        this.locationString = (this.chr + \":\" +\n            StringUtils.numberFormatter(this.start + 1) + \"-\" +\n            StringUtils.numberFormatter(this.end))\n\n        // Color based on actionability score\n        if (this.actionabilityScore !== undefined) {\n            let alpha\n            if (this.actionabilityScore <= 10) {\n                alpha = 0.2\n            } else {\n                const v = Math.min(30, this.actionabilityScore)\n                alpha = 0.2 + 0.8 * Math.log10((v - 10) / 2)\n            }\n            this.alpha = alpha\n        }\n\n\n    }\n\n    popupData() {\n\n\n        const link = createLink(\"CIViC\", \"https://civicdb.org/links/variants/\" + this.id)\n\n        let cravatLink\n        const isSnp =\n            this.refBases !== this.altBases &&\n            this.refBases && this.refBases.length === 1 &&\n            this.altBases && this.altBases.length === 1\n\n\n        const pd = [link]\n        pd.push({\n            name: \"Entrez\",\n            value: createLink(this.entrezName, \"https://ghr.nlm.nih.gov/gene/\" + this.entrezName)\n        })\n        pd.push({name: \"Name\", value: this.name})\n\n        if (this.variant_types && this.variant_types.length > 0) {\n\n            const name = this.variant_types.length === 1 ? \"Type\" : \"Types\"\n            let typeString\n            for (let vt of this.variant_types) {\n                if (!typeString) typeString = vt.display_name\n                else typeString += \", \" + vt.display_name\n            }\n\n            pd.push({name: name, value: typeString})\n        }\n\n        pd.push({name: \"Actionability\", value: this.actionabilityScore})\n\n\n        pd.push({name: \"Location\", value: this.locationString})\n\n        return pd\n\n\n        function createLink(text, href) {\n            return \"<a target='_blank' \" + \"href='\" + href + \"'>\" + text + \"</a>\"\n        }\n\n    }\n}\n\nexport default CivicReader","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions, getFilename} from \"../util/igvUtils.js\"\n\nclass HtsgetReader {\n\n    constructor(config, genome) {\n        this.config = config\n        this.genome = genome\n        this.format = config.format ? config.format.toUpperCase() : \"BAM\"    // Backward compatibility\n        if (!(this.format === \"BAM\" || this.format === \"VCF\")) {\n            throw  Error(`htsget format ${config.format} is not supported`)\n        }\n    }\n\n    async readHeaderData() {\n        const url = `${getUrl(this.config)}?class=header&format=${this.format}`\n        const ticket = await igvxhr.loadJson(url, buildOptions(this.config))\n        return await this.loadUrls(ticket.htsget.urls)\n    }\n\n    async readData(chr, start, end) {\n        const url = `${getUrl(this.config)}?format=${this.format}&referenceName=${chr}&start=${Math.floor(start)}&end=${Math.ceil(end)}`\n        const ticket = await igvxhr.loadJson(url, buildOptions(this.config))\n        return this.loadUrls(ticket.htsget.urls)\n    }\n\n    async loadUrls(urls) {\n\n        const promiseArray = []\n        for (let urlData of urls) {\n\n            if (urlData.url.startsWith('data:')) {\n                // this is a data-uri\n                promiseArray.push(Promise.resolve(dataUriToBytes(urlData.url)))\n\n            } else {\n\n                const options = buildOptions(this.config || {})\n\n                if (urlData.headers) {\n                    options.headers = Object.assign(options.headers || {}, urlData.headers)\n                }\n\n                promiseArray.push(igvxhr.loadArrayBuffer(urlData.url, options))\n            }\n        }\n        const arrayBuffers = await Promise.all(promiseArray)\n        return concatArrays(arrayBuffers)\n    }\n\n\n    static async inferFormat(config) {\n        try {\n            const url = getUrl(config)\n            const headerURL = `${url}${url.includes(\"?\") ? \"&\" : \"?\"}class=header`\n            const ticket = await igvxhr.loadJson(headerURL, buildOptions(config))\n            if (ticket.htsget) {\n                const format = ticket.htsget.format\n                if (!(format === \"BAM\" || format === \"VCF\")) {\n                    throw  Error(`htsget format ${format} is not supported`)\n                }\n                config.format = format.toLowerCase()\n                config.sourceType = \"htsget\"\n                if (!config.name) {\n                    config.name = await getFilename(config.url)\n                }\n            }\n        } catch (e) {\n            // Errors => this is not an htsget source, not an application error.  Ignore\n        }\n    }\n}\n\n/**\n * Extract the full url from the config.  Striving for backward compatibility, \"endpoint\" and \"id\" are deprecated.\n *\n * @param config\n */\nfunction getUrl(config) {\n    if (config.url && config.endpoint && config.id) {\n        return config.url + config.endpoint + config.id    // Deprecated\n    } else if (config.endpoint && config.id) {\n        return config.endpoint + config.id                // Deprecated\n    } else if (config.url) {\n        if (config.url.startsWith(\"htsget://\")) {\n            return config.url.replace(\"htsget://\", \"https://\")    // htsget -> http not supported\n        } else {\n            return config.url\n        }\n    } else {\n        throw Error(\"Must specify either 'url', or 'endpoint' and 'id\")\n    }\n\n\n}\n\n/**\n * Concatenate a list of array buffers, returning an UInt8Array\n * @param arrayBuffers\n */\nfunction concatArrays(arrayBuffers) {\n\n    let len = 0\n    for (let a of arrayBuffers) {\n        len += a.byteLength\n    }\n\n    let offset = 0\n    const newArray = new Uint8Array(len)\n    for (let buf of arrayBuffers) {\n        const a = new Uint8Array(buf)\n        newArray.set(a, offset)\n        offset += a.length\n    }\n\n    return newArray\n}\n\nfunction dataUriToBytes(dataUri) {\n\n    const split = dataUri.split(',')\n    const info = split[0].split(':')[1]\n    let dataString = split[1]\n\n    if (info.indexOf('base64') >= 0) {\n        dataString = atob(dataString)\n    } else {\n        dataString = decodeURI(dataString)\n    }\n\n    const bytes = new Uint8Array(dataString.length)\n    for (var i = 0; i < dataString.length; i++) {\n        bytes[i] = dataString.charCodeAt(i)\n    }\n\n    return bytes\n}\n\n\nexport default HtsgetReader","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\nimport HtsgetReader from \"./htsgetReader.js\"\nimport getDataWrapper from \"../feature/dataWrapper.js\"\nimport VcfParser from \"../variant/vcfParser.js\"\n\nclass HtsgetVariantReader extends HtsgetReader {\n\n    constructor(config, genome) {\n        super(config, genome)\n        this.parser = new VcfParser()\n    }\n\n    async readHeader() {\n        if (!this.header) {\n            const data = await this.readHeaderData()\n            const dataWrapper = getDataWrapper(data)\n            this.header = await this.parser.parseHeader(dataWrapper, this.genome)\n            this.chrAliasTable = this.header.chrAliasTable\n        }\n        return this.header\n    }\n\n    async readFeatures(chr, start, end) {\n\n        if (this.config.format && this.config.format.toUpperCase() !== \"VCF\") {\n            throw  Error(`htsget format ${this.config.format} is not supported`)\n        }\n\n        if (!this.chrAliasTable) {\n            await this.readHeader()\n        }\n\n        let queryChr = this.chrAliasTable.has(chr) ? this.chrAliasTable.get(chr) : chr\n\n        const data = await this.readData(queryChr, start, end)\n\n        const dataWrapper = getDataWrapper(data)\n\n        return this.parser.parseFeatures(dataWrapper)\n\n        //  return dataWrapper;\n\n    }\n\n}\n\n\n/*\nExample for https://htsget.ga4gh.org/variants/1000genomes.phase1.chr22?format=VCF&referenceName=22&start=0&end=100000\n\n{\n    \"htsget\": {\n        \"format\": \"VCF\",\n        \"urls\": [{\n            \"url\": \"https://htsget.ga4gh.org/variants/data/1000genomes.phase1.chr22\",\n            \"headers\": {\"HtsgetBlockClass\": \"header\", \"HtsgetCurrentBlock\": \"0\", \"HtsgetTotalBlocks\": \"2\"},\n            \"class\": \"header\"\n        }, {\n            \"url\": \"https://htsget.ga4gh.org/variants/data/1000genomes.phase1.chr22?end=100000&referenceName=22&start=0\",\n            \"headers\": {\"HtsgetCurrentBlock\": \"1\", \"HtsgetTotalBlocks\": \"2\"},\n            \"class\": \"body\"\n        }]\n    }\n*/\n\n\nexport default HtsgetVariantReader","// Assigns a row # to each feature.  If the feature does not fit in any row and #rows == maxRows no\n// row number is assigned.\nfunction pack(featureList, maxRows) {\n\n    maxRows = maxRows || Number.MAX_SAFE_INTEGER\n    const rows = []\n    featureList.sort(function (a, b) {\n        return a.start - b.start\n    })\n    rows.push(-1000)\n\n    for (let feature of featureList) {\n        let r = 0\n        const len = Math.min(rows.length, maxRows)\n        for (r = 0; r < len; r++) {\n            if (feature.start >= rows[r]) {\n                feature.row = r\n                rows[r] = feature.end\n                break\n            }\n        }\n        feature.row = r\n        rows[r] = feature.end\n    }\n}\n\nexport default pack\n\n","import pack from \"./featurePacker.js\"\n\nconst DEFAULT_MAX_WG_COUNT = 10000\n\n/**\n * Return a collection of \"whole genome\" features wrapping the supplied features, possibly downsampled.  The purpose\n * is to support painting features in \"whole genome view\".\n *\n * @param allFeatures - dictionary (object), keys are chromosome names, values are lists of features\n * @param genome\n * @param maxWGCount - optional, maximum # of whole genome features to computer\n * @returns {*[]}\n */\nfunction computeWGFeatures(allFeatures, genome, maxWGCount) {\n\n    const max = maxWGCount || DEFAULT_MAX_WG_COUNT\n\n    const makeWGFeature = (f) => {\n        const wg = Object.assign({}, f)\n        wg.chr = \"all\"\n        wg.start = genome.getGenomeCoordinate(f.chr, f.start)\n        wg.end = genome.getGenomeCoordinate(f.chr, f.end)\n        wg._f = f\n        // Don't draw exons in whole genome view\n        if (wg[\"exons\"]) delete wg[\"exons\"]\n        return wg\n    }\n\n    const wgChromosomeNames = new Set(genome.wgChromosomeNames)\n    const wgFeatures = []\n    let count = 0\n    for (let c of genome.wgChromosomeNames) {\n\n        if(Array.isArray(allFeatures)) {\n            const featureDict = {}\n            for(let f of allFeatures) {\n                const chr = genome.getChromosomeName(f.chr)\n                if(!featureDict.hasOwnProperty(chr)) {\n                    featureDict[chr] = []\n                }\n                featureDict[chr].push(f)\n            }\n            allFeatures = featureDict\n        }\n\n        const features = allFeatures[c]\n\n        if (features) {\n            for (let f of features) {\n                let queryChr = genome.getChromosomeName(f.chr)\n                if (wgChromosomeNames.has(queryChr)) {\n                    if (wgFeatures.length < max) {\n                        wgFeatures.push(makeWGFeature(f))\n                    } else {\n                        //Reservoir sampling\n                        const samplingProb = max / (count + 1)\n                        if (Math.random() < samplingProb) {\n                            const idx = Math.floor(Math.random() * (max - 1))\n                            wgFeatures[idx] = makeWGFeature(f)\n                        }\n                    }\n                }\n                count++\n            }\n        }\n    }\n\n    wgFeatures.sort(function (a, b) {\n        return a.start - b.start\n    })\n\n    return wgFeatures\n}\n\nfunction packFeatures(features, maxRows) {\n\n    maxRows = maxRows || 1000\n    if (features == null || features.length === 0) {\n        return\n    }\n    // Segregate by chromosome\n    const chrFeatureMap = {}\n    const chrs = []\n    for (let feature of features) {\n        const chr = feature.chr\n        let flist = chrFeatureMap[chr]\n        if (!flist) {\n            flist = []\n            chrFeatureMap[chr] = flist\n            chrs.push(chr)\n        }\n        flist.push(feature)\n    }\n\n    // Loop through chrosomosomes and pack features;\n    for (let chr of chrs) {\n        pack(chrFeatureMap[chr], maxRows)\n    }\n}\n\n\nexport {computeWGFeatures, packFeatures}","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014-2015 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {FeatureCache} from \"../../node_modules/igv-utils/src/index.js\"\nimport FeatureFileReader from \"./featureFileReader.js\"\nimport CustomServiceReader from \"./customServiceReader.js\"\nimport UCSCServiceReader from \"./ucscServiceReader.js\"\nimport GFFHelper from \"./gff/gffHelper.js\"\nimport GtexReader from \"../gtex/gtexReader.js\"\nimport ImmVarReader from \"../gtex/immvarReader.js\"\nimport Ga4ghVariantReader from \"../ga4gh/ga4ghVariantReader.js\"\nimport CivicReader from \"../civic/civicReader.js\"\nimport GenomicInterval from \"../genome/genomicInterval.js\"\nimport HtsgetVariantReader from \"../htsget/htsgetVariantReader.js\"\nimport {computeWGFeatures, packFeatures} from \"./featureUtils.js\"\n\nconst DEFAULT_MAX_WG_COUNT = 10000\n\n/**\n * feature source for \"bed like\" files (tab or whitespace delimited files with 1 feature per line: bed, gff, vcf, etc)\n *\n * @param config\n * @constructor\n */\nclass TextFeatureSource {\n\n    constructor(config, genome) {\n\n        this.config = config || {}\n        this.genome = genome\n        this.sourceType = (config.sourceType === undefined ? \"file\" : config.sourceType)\n        this.maxWGCount = config.maxWGCount || DEFAULT_MAX_WG_COUNT\n\n        const queryableFormats = new Set([\"bigwig\", \"bw\", \"bigbed\", \"bb\", \"biginteract\", \"biggenepred\", \"bignarrowpeak\", \"tdf\"])\n\n        this.queryable = config.indexURL || config.queryable === true   // False by default, unless explicitly set\n        if (config.reader) {\n            // Explicit reader implementation\n            this.reader = config.reader\n            this.queryable = config.queryable !== false\n        } else if (config.sourceType === \"ga4gh\") {\n            this.reader = new Ga4ghVariantReader(config, genome)\n            this.queryable = true\n        } else if (config.sourceType === \"immvar\") {\n            this.reader = new ImmVarReader(config)\n            this.queryable = true\n        } else if (config.type === \"eqtl\" && config.sourceType === \"gtex-ws\") {\n            this.reader = new GtexReader(config)\n            this.queryable = true\n        } else if (\"htsget\" === config.sourceType) {\n            this.reader = new HtsgetVariantReader(config, genome)\n            this.queryable = true\n        } else if (config.sourceType === 'ucscservice') {\n            this.reader = new UCSCServiceReader(config.source)\n            this.queryable = true\n        } else if (config.sourceType === 'custom') {\n            this.reader = new CustomServiceReader(config.source)\n            this.queryable = false !== config.source.queryable\n        } else if (\"civic-ws\" === config.sourceType) {\n            this.reader = new CivicReader(config)\n            this.queryable = false\n        } else {\n            // File of some type (i.e. not a webservice)\n            this.reader = new FeatureFileReader(config, genome)\n            if (config.queryable !== undefined) {\n                this.queryable = config.queryable\n            } else if (queryableFormats.has(config.format) || this.reader.indexed) {\n                this.queryable = true\n            } else {\n                // Leav undefined -- will defer until we know if reader has an index\n            }\n        }\n\n        // Set  searchable unless explicitly turned off, or track uses in indexed or otherwise queryable\n        // feature source.  queryable => features loaded on demand (by query)\n        this.searchable = config.searchable === true || config.searchableFields || (config.searchable !== false && !this.queryable)\n\n    }\n\n    async defaultVisibilityWindow() {\n        if (this.reader && typeof this.reader.defaultVisibilityWindow === 'function') {\n            return this.reader.defaultVisibilityWindow()\n        }\n    }\n\n    async trackType() {\n        const header = await this.getHeader()\n        if (header) {\n            return header.type\n        } else {\n            return undefined    // Convention for unknown or unspecified\n        }\n    }\n\n    async getHeader() {\n        if (!this.header) {\n\n            if (this.reader && typeof this.reader.readHeader === \"function\") {\n                const header = await this.reader.readHeader()\n                if (header) {\n                    this.header = header\n                    if (header.format) {\n                        this.config.format = header.format\n                    }\n                } else {\n                    this.header = {}\n                }\n            } else {\n                this.header = {}\n            }\n        }\n        return this.header\n    }\n\n    /**\n     * Required function for all data source objects.  Fetches features for the\n     * range requested.\n     *\n     * This function is quite complex due to the variety of reader types backing it, some indexed, some queryable,\n     * some not.\n     *\n     * @param chr\n     * @param start\n     * @param end\n     * @param bpPerPixel\n     */\n    async getFeatures({chr, start, end, bpPerPixel, visibilityWindow}) {\n\n        const genome = this.genome\n        const queryChr = genome ? genome.getChromosomeName(chr) : chr\n        const isWholeGenome = (\"all\" === queryChr.toLowerCase())\n\n        // Various conditions that can require a feature load\n        //   * view is \"whole genome\" but no features are loaded\n        //   * cache is disabled\n        //   * cache does not contain requested range\n       // const containsRange = this.featureCache.containsRange(new GenomicInterval(queryChr, start, end))\n        if ((isWholeGenome && !this.wgFeatures && this.supportsWholeGenome()) ||\n            this.config.disableCache ||\n            !this.featureCache ||\n            !this.featureCache.containsRange(new GenomicInterval(queryChr, start, end))) {\n            await this.loadFeatures(queryChr, start, end, visibilityWindow)\n        }\n\n        if (isWholeGenome) {\n            if (!this.wgFeatures) {\n                if (this.supportsWholeGenome()) {\n                    this.wgFeatures = computeWGFeatures(this.featureCache.getAllFeatures(), this.genome, this.maxWGCount)\n                } else {\n                    this.wgFeatures = []\n                }\n            }\n            return this.wgFeatures\n        } else {\n            return this.featureCache.queryFeatures(queryChr, start, end)\n        }\n    }\n\n    supportsWholeGenome() {\n        return !this.queryable   // queryable (indexed, web services) sources don't support whole genome view\n    }\n\n    // TODO -- experimental, will only work for non-indexed sources\n    getAllFeatures() {\n        if (this.queryable || !this.featureCache) {   // queryable sources don't support all features\n            return []\n        } else {\n            return this.featureCache.getAllFeatures()\n        }\n    }\n\n\n    async loadFeatures(queryChr, start, end, visibilityWindow) {\n\n        const reader = this.reader\n        let intervalStart = start\n        let intervalEnd = end\n\n        // Use visibility window to potentially expand query interval.\n        // This can save re-queries as we zoom out.  Visibility window <= 0 is a special case\n        // indicating whole chromosome should be read at once.\n        if ((!visibilityWindow || visibilityWindow <= 0) && this.config.expandQuery !== false) {\n            // Whole chromosome\n            const chromosome = this.genome ? this.genome.getChromosome(queryChr) : undefined\n            intervalStart = 0\n            intervalEnd = Math.max(chromosome ? chromosome.bpLength : Number.MAX_SAFE_INTEGER, end)\n        } else if (visibilityWindow > (end - start) && this.config.expandQuery !== false) {\n            const expansionWindow = Math.min(4.1 * (end - start), visibilityWindow)\n            intervalStart = Math.max(0, (start + end) / 2 - expansionWindow)\n            intervalEnd = start + expansionWindow\n        }\n\n        let features = await reader.readFeatures(queryChr, intervalStart, intervalEnd)\n        if (this.queryable === undefined) {\n            this.queryable = reader.indexed\n        }\n\n        const genomicInterval = this.queryable ?\n            new GenomicInterval(queryChr, intervalStart, intervalEnd) :\n            undefined\n\n        if (features) {\n\n            if (this.config.assembleGFF !== false &&\n                (\"gtf\" === this.config.format || \"gff3\" === this.config.format || \"gff\" === this.config.format)) {\n                features = (new GFFHelper(this.config)).combineFeatures(features, genomicInterval)\n            }\n\n            // Assign overlapping features to rows\n            if (this.config.format !== \"wig\" && this.config.type !== \"junctions\") {\n                const maxRows = this.config.maxRows || Number.MAX_SAFE_INTEGER\n                packFeatures(features, maxRows)\n            }\n\n            // Note - replacing previous cache with new one.  genomicInterval is optional (might be undefined => includes all features)\n            this.featureCache = new FeatureCache(features, this.genome, genomicInterval)\n\n            // If track is marked \"searchable\"< cache features by name -- use this with caution, memory intensive\n            if (this.searchable) {\n                this.genome.addFeaturesToDB(features, this.config)\n            }\n        } else {\n            this.featureCache = new FeatureCache([], genomicInterval)     // Empty cache\n        }\n    }\n}\n\n\n/**\n * This function is used to apply properties normally added during parsing to  features supplied directly in the\n * config as an array of objects.   At the moment the only application is bedpe type features.\n * @param features\n */\nfunction fixFeatures(features, genome) {\n\n    if (!features || features.length === 0) return []\n\n    const isBedPE = features[0].chr === undefined && features[0].chr1 !== undefined\n    if (isBedPE) {\n        const interChrFeatures = []\n        for (let feature of features) {\n\n            if (genome) {\n                feature.chr1 = genome.getChromosomeName(feature.chr1)\n                feature.chr2 = genome.getChromosomeName(feature.chr2)\n            }\n\n            // Set total extent of feature\n            if (feature.chr1 === feature.chr2) {\n                feature.chr = feature.chr1\n                feature.start = Math.min(feature.start1, feature.start2)\n                feature.end = Math.max(feature.end1, feature.end2)\n            } else {\n                interChrFeatures.push(feature)\n            }\n        }\n\n        // Make copies of inter-chr features, one for each chromosome\n        for (let f1 of interChrFeatures) {\n            const f2 = Object.assign({dup: true}, f1)\n            features.push(f2)\n\n            f1.chr = f1.chr1\n            f1.start = f1.start1\n            f1.end = f1.end1\n\n            f2.chr = f2.chr2\n            f2.start = f2.start2\n            f2.end = f2.end2\n        }\n    } else if (genome) {\n        for (let feature of features) {\n            feature.chr = genome.getChromosomeName(feature.chr)\n        }\n    }\n\n\n    return features\n}\n\nexport default TextFeatureSource\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\n\nclass BufferedReader {\n\n    constructor(config, contentLength, bufferSize) {\n        this.path = config.url\n        this.bufferSize = bufferSize ? bufferSize : 512000\n        this.range = {start: -1, size: -1}\n        this.config = config\n    }\n\n    /**\n     *\n     * @param requestedRange - byte rangeas {start, size}\n     * @param fulfill - function to receive result\n     * @param asUint8 - optional flag to return result as an UInt8Array\n     */\n    async dataViewForRange(requestedRange, asUint8, retries = 0) {\n        try {\n\n            const hasData = (this.data && (this.range.start <= requestedRange.start) &&\n                ((this.range.start + this.range.size) >= (requestedRange.start + requestedRange.size)))\n\n            if (!hasData) {\n                let bufferSize\n                // If requested range size is specified, potentially expand buffer size\n                if (requestedRange.size) {\n                    bufferSize = Math.max(this.bufferSize, requestedRange.size)\n                } else {\n                    bufferSize = this.bufferSize\n                }\n                if (this.contentLength) {\n                    bufferSize = Math.min(bufferSize, this.contentLength - requestedRange.start)\n                }\n                const loadRange = {start: requestedRange.start, size: bufferSize}\n                const arrayBuffer = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {range: loadRange}))\n                this.data = arrayBuffer\n                this.range = loadRange\n            }\n\n            const len = this.data.byteLength\n            const bufferStart = requestedRange.start - this.range.start\n            return asUint8 ?\n                new Uint8Array(this.data, bufferStart, len - bufferStart) :\n                new DataView(this.data, bufferStart, len - bufferStart)\n        } catch (e) {\n            if (retries === 0 && e.message && e.message.startsWith(\"416\")) {\n                try {\n                    this.contentLength = await igvxhr.getContentLength(this.path, buildOptions(this.config))\n                    return this.dataViewForRange(requestedRange, asUint8, ++retries)\n                } catch (e1) {\n                    console.error(e1)\n                }\n                throw e\n            }\n        }\n    }\n}\n\nexport default BufferedReader\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport BufferedReader from \"./bufferedReader.js\"\nimport BinaryParser from \"../binary.js\"\nimport {BGZip, igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions, isDataURL} from \"../util/igvUtils.js\"\nimport getDecoder from \"./bbDecoders.js\"\nimport {parseAutoSQL} from \"../util/ucscUtils.js\"\n\nlet BIGWIG_MAGIC_LTH = 0x888FFC26 // BigWig Magic Low to High\nlet BIGWIG_MAGIC_HTL = 0x26FC8F66 // BigWig Magic High to Low\nlet BIGBED_MAGIC_LTH = 0x8789F2EB // BigBed Magic Low to High\nlet BIGBED_MAGIC_HTL = 0xEBF28987 // BigBed Magic High to Low\nlet BBFILE_HEADER_SIZE = 64\nlet RPTREE_HEADER_SIZE = 48\nlet RPTREE_NODE_LEAF_ITEM_SIZE = 32   // leaf item size\nlet RPTREE_NODE_CHILD_ITEM_SIZE = 24  // child item size\nlet BUFFER_SIZE = 512000     //  buffer\nlet BPTREE_HEADER_SIZE = 32\n\nclass BWReader {\n\n    constructor(config, genome) {\n        this.path = config.url\n        this.format = config.format || \"bigwig\"\n        this.genome = genome\n        this.rpTreeCache = {}\n        this.config = config\n        this.loader = isDataURL(this.path) ? new DataBuffer(this.path) : igvxhr\n    }\n\n    async readWGFeatures(bpPerPixel, windowFunction) {\n        await this.loadHeader()\n        const chrIdx1 = 0\n        const chrIdx2 = this.chromTree.idToChrom.length - 1\n        const chr1 = this.chromTree.idToChrom[chrIdx1]\n        const chr2 = this.chromTree.idToChrom[chrIdx2]\n        return this.readFeatures(chr1, 0, chr2, Number.MAX_VALUE, bpPerPixel, windowFunction)\n    }\n\n    async readFeatures(chr1, bpStart, chr2, bpEnd, bpPerPixel, windowFunction) {\n\n        await this.loadHeader()\n        const chrIdx1 = this.chromTree.chromToID[chr1]\n        const chrIdx2 = this.chromTree.chromToID[chr2]\n        if (chrIdx1 === undefined || chrIdx2 === undefined) {\n            return []\n        }\n\n        let treeOffset\n        let decodeFunction\n        if (this.type === \"bigwig\") {\n            // Select a biwig \"zoom level\" appropriate for the current resolution.\n            const zoomLevelHeaders = await this.getZoomHeaders()\n            let zoomLevelHeader = bpPerPixel ? zoomLevelForScale(bpPerPixel, zoomLevelHeaders) : undefined\n            if (zoomLevelHeader) {\n                treeOffset = zoomLevelHeader.indexOffset\n                decodeFunction = decodeZoomData\n            } else {\n                treeOffset = this.header.fullIndexOffset\n                decodeFunction = decodeWigData\n            }\n        } else {\n            // bigbed, zoom data is not currently used in igv for bed type features\n            treeOffset = this.header.fullIndexOffset\n            decodeFunction = getBedDataDecoder.call(this)\n        }\n\n\n        // Load the R Tree and fine leaf items\n        const rpTree = await this.loadRPTree(treeOffset)\n        const leafItems = await rpTree.findLeafItemsOverlapping(chrIdx1, bpStart, chrIdx2, bpEnd)\n        if (!leafItems || leafItems.length === 0) {\n            return []\n        } else {\n\n            // Consolidate leaf items and get all data at once\n            let start = Number.MAX_VALUE\n            let end = 0\n            for (let item of leafItems) {\n                start = Math.min(start, item.dataOffset)\n                end = Math.max(end, item.dataOffset + item.dataSize)\n            }\n            const size = end - start\n            const arrayBuffer = await this.loader.loadArrayBuffer(this.config.url, buildOptions(this.config, {\n                range: {\n                    start: start,\n                    size: size\n                }\n            }))\n\n            // Parse data and return features\n            const allFeatures = []\n            for (let item of leafItems) {\n                const uint8Array = new Uint8Array(arrayBuffer, item.dataOffset - start, item.dataSize)\n                let plain\n                const isCompressed = this.header.uncompressBuffSize > 0\n                if (isCompressed) {\n                    plain = BGZip.inflate(uint8Array)\n                } else {\n                    plain = uint8Array\n                }\n                decodeFunction.call(this, new DataView(plain.buffer), chrIdx1, bpStart, chrIdx2, bpEnd, allFeatures, this.chromTree.idToChrom, windowFunction)\n            }\n\n            allFeatures.sort(function (a, b) {\n                return a.start - b.start\n            })\n\n            return allFeatures\n        }\n    }\n\n    async getZoomHeaders() {\n        if (this.zoomLevelHeaders) {\n            return this.zoomLevelHeaders\n        } else {\n            await this.loadHeader()\n            return this.zoomLevelHeaders\n        }\n    }\n\n    async loadHeader() {\n\n        if (this.header) {\n            return this.header\n        } else {\n            let data = await this.loader.loadArrayBuffer(this.path, buildOptions(this.config, {\n                range: {\n                    start: 0,\n                    size: BBFILE_HEADER_SIZE\n                }\n            }))\n\n            let header\n\n            // Assume low-to-high unless proven otherwise\n            this.littleEndian = true\n\n            let binaryParser = new BinaryParser(new DataView(data))\n            let magic = binaryParser.getUInt()\n            if (magic === BIGWIG_MAGIC_LTH) {\n                this.type = \"bigwig\"\n            } else if (magic === BIGBED_MAGIC_LTH) {\n                this.type = \"bigbed\"\n            } else {\n                //Try big endian order\n                this.littleEndian = false\n\n                binaryParser.littleEndian = false\n                binaryParser.position = 0\n                let magic = binaryParser.getUInt()\n\n                if (magic === BIGWIG_MAGIC_HTL) {\n                    this.type = \"bigwig\"\n                } else if (magic === BIGBED_MAGIC_HTL) {\n                    this.type = \"bigbed\"\n                } else {\n                    // TODO -- error, unknown file type  or BE\n                }\n            }\n            // Table 5  \"Common header for bigwig and bigbed files\"\n            header = {\n                bwVersion: binaryParser.getUShort(),\n                nZoomLevels: binaryParser.getUShort(),\n                chromTreeOffset: binaryParser.getLong(),\n                fullDataOffset: binaryParser.getLong(),\n                fullIndexOffset: binaryParser.getLong(),\n                fieldCount: binaryParser.getUShort(),\n                definedFieldCount: binaryParser.getUShort(),\n                autoSqlOffset: binaryParser.getLong(),\n                totalSummaryOffset: binaryParser.getLong(),\n                uncompressBuffSize: binaryParser.getInt(),\n                extensionOffset: binaryParser.getLong()\n            }\n\n            ///////////\n\n            const startOffset = BBFILE_HEADER_SIZE\n            let range = {start: startOffset, size: (header.fullDataOffset - startOffset + 5)}\n            data = await this.loader.loadArrayBuffer(this.path, buildOptions(this.config, {range: range}))\n\n            const nZooms = header.nZoomLevels\n            binaryParser = new BinaryParser(new DataView(data))\n\n            this.zoomLevelHeaders = []\n            this.firstZoomDataOffset = Number.MAX_SAFE_INTEGER\n            for (let i = 1; i <= nZooms; i++) {\n                const zoomNumber = nZooms - i\n                const zlh = new ZoomLevelHeader(zoomNumber, binaryParser)\n                this.firstZoomDataOffset = Math.min(zlh.dataOffset, this.firstZoomDataOffset)\n                this.zoomLevelHeaders[zoomNumber] = zlh\n            }\n\n            // Autosql\n            if (header.autoSqlOffset > 0) {\n                binaryParser.position = header.autoSqlOffset - startOffset\n                const autoSqlString = binaryParser.getString()\n                if (autoSqlString) {\n                    this.autoSql = parseAutoSQL(autoSqlString)\n                }\n            }\n\n            // Total summary\n            if (header.totalSummaryOffset > 0) {\n                binaryParser.position = header.totalSummaryOffset - startOffset\n                this.totalSummary = new BWTotalSummary(binaryParser)\n            }\n\n            // Chrom data index\n            if (header.chromTreeOffset > 0) {\n                binaryParser.position = header.chromTreeOffset - startOffset\n                this.chromTree = new BPTree(binaryParser, startOffset, this.genome)\n            } else {\n                // TODO -- this is an error, not expected\n                throw \"BigWig chromosome tree offset <= 0\"\n            }\n\n            //Finally total data count\n            binaryParser.position = header.fullDataOffset - startOffset\n            header.dataCount = binaryParser.getInt()\n            ///////////\n\n            this.setDefaultVisibilityWindow(header)\n\n            this.header = header\n            return this.header\n\n        }\n    }\n\n    async loadRPTree(offset) {\n\n        let rpTree = this.rpTreeCache[offset]\n        if (rpTree) {\n            return rpTree\n        } else {\n            rpTree = new RPTree(offset, this.config, this.littleEndian, this.loader)\n            await rpTree.load()\n            this.rpTreeCache[offset] = rpTree\n            return rpTree\n        }\n    }\n\n    async getType() {\n        await this.loadHeader()\n        return this.type\n    }\n\n    async getTrackType() {\n        await this.loadHeader()\n        if (this.type === \"bigwig\") {\n            return \"wig\"\n        } else {\n            return this.autoSql && this.autoSql.table === \"chromatinInteract\" ? \"interact\" : \"annotation\"\n        }\n    }\n\n    setDefaultVisibilityWindow(header) {\n        if (this.type === \"bigwig\") {\n            this.visibilityWindow = -1\n        } else {\n            // bigbed\n            let genomeSize = this.genome ? this.genome.getGenomeLength() : 3088286401\n            // Estimate window size to return ~ 1,000 features, assuming even distribution across the genome\n            this.visibilityWindow = header.dataCount < 1000 ? -1 : 1000 * (genomeSize / header.dataCount)\n\n        }\n    }\n}\n\n\nclass ZoomLevelHeader {\n    constructor(index, byteBuffer) {\n        this.index = index\n        this.reductionLevel = byteBuffer.getInt()\n        this.reserved = byteBuffer.getInt()\n        this.dataOffset = byteBuffer.getLong()\n        this.indexOffset = byteBuffer.getLong()\n    }\n}\n\nclass RPTree {\n\n    constructor(fileOffset, config, littleEndian, loader) {\n\n        this.config = config\n        this.loader = loader\n        this.fileOffset = fileOffset // File offset to beginning of tree\n        this.path = config.url\n        this.littleEndian = littleEndian\n    }\n\n    async load() {\n        const rootNodeOffset = this.fileOffset + RPTREE_HEADER_SIZE\n        const bufferedReader = isDataURL(this.path) ?\n            this.loader :\n            new BufferedReader(this.config, BUFFER_SIZE)\n        this.rootNode = await this.readNode(rootNodeOffset, bufferedReader)\n        return this\n    }\n\n    async readNode(filePosition, bufferedReader) {\n\n        let dataView = await bufferedReader.dataViewForRange({start: filePosition, size: 4}, false)\n        let binaryParser = new BinaryParser(dataView, this.littleEndian)\n        const type = binaryParser.getByte()\n        const isLeaf = (type === 1)\n        const reserved = binaryParser.getByte()\n        const count = binaryParser.getUShort()\n        filePosition += 4\n\n        let bytesRequired = count * (isLeaf ? RPTREE_NODE_LEAF_ITEM_SIZE : RPTREE_NODE_CHILD_ITEM_SIZE)\n        let range2 = {start: filePosition, size: bytesRequired}\n        dataView = await bufferedReader.dataViewForRange(range2, false)\n        const items = new Array(count)\n        binaryParser = new BinaryParser(dataView)\n\n        if (isLeaf) {\n            for (let i = 0; i < count; i++) {\n                let item = {\n                    isLeaf: true,\n                    startChrom: binaryParser.getInt(),\n                    startBase: binaryParser.getInt(),\n                    endChrom: binaryParser.getInt(),\n                    endBase: binaryParser.getInt(),\n                    dataOffset: binaryParser.getLong(),\n                    dataSize: binaryParser.getLong()\n                }\n                items[i] = item\n\n            }\n            return new RPTreeNode(items)\n        } else { // non-leaf\n            for (let i = 0; i < count; i++) {\n\n                let item = {\n                    isLeaf: false,\n                    startChrom: binaryParser.getInt(),\n                    startBase: binaryParser.getInt(),\n                    endChrom: binaryParser.getInt(),\n                    endBase: binaryParser.getInt(),\n                    childOffset: binaryParser.getLong()\n                }\n                items[i] = item\n            }\n\n            return new RPTreeNode(items)\n        }\n\n    }\n\n    async findLeafItemsOverlapping(chrIdx1, startBase, chrIdx2, endBase) {\n\n        let self = this\n\n        return new Promise(function (fulfill, reject) {\n\n            let leafItems = [],\n                processing = new Set(),\n                bufferedReader = isDataURL(self.path) ?\n                    self.loader :\n                    new BufferedReader(self.config, BUFFER_SIZE)\n\n            processing.add(0)  // Zero represents the root node\n            findLeafItems(self.rootNode, 0)\n\n            function findLeafItems(node, nodeId) {\n\n                if (overlaps(node, chrIdx1, startBase, chrIdx2, endBase)) {\n\n                    let items = node.items\n\n                    items.forEach(function (item) {\n\n                        if (overlaps(item, chrIdx1, startBase, chrIdx2, endBase)) {\n\n                            if (item.isLeaf) {\n                                leafItems.push(item)\n                            } else {\n                                if (item.childNode) {\n                                    findLeafItems(item.childNode)\n                                } else {\n                                    processing.add(item.childOffset)  // Represent node to-be-loaded by its file position\n\n                                    self.readNode(item.childOffset, bufferedReader)\n                                        .then(function (node) {\n                                            item.childNode = node\n                                            findLeafItems(node, item.childOffset)\n                                        })\n                                        .catch(reject)\n                                }\n                            }\n                        }\n                    })\n\n                }\n\n                if (nodeId !== undefined) processing.delete(nodeId)\n\n                // Wait until all nodes are processed\n                if (processing.size === 0) {\n                    fulfill(leafItems)\n                }\n            }\n        })\n    }\n}\n\nclass RPTreeNode {\n\n    constructor(items) {\n\n        this.items = items\n\n        let minChromId = Number.MAX_SAFE_INTEGER,\n            maxChromId = 0,\n            minStartBase = Number.MAX_SAFE_INTEGER,\n            maxEndBase = 0,\n            i,\n            item\n\n        for (i = 0; i < items.length; i++) {\n            item = items[i]\n            minChromId = Math.min(minChromId, item.startChrom)\n            maxChromId = Math.max(maxChromId, item.endChrom)\n            minStartBase = Math.min(minStartBase, item.startBase)\n            maxEndBase = Math.max(maxEndBase, item.endBase)\n        }\n\n        this.startChrom = minChromId\n        this.endChrom = maxChromId\n        this.startBase = minStartBase\n        this.endBase = maxEndBase\n    }\n}\n\nclass BPTree {\n\n    constructor(binaryParser, startOffset, genome) {\n\n        let magic = binaryParser.getInt()\n        let blockSize = binaryParser.getInt()\n        let keySize = binaryParser.getInt()\n        let valSize = binaryParser.getInt()\n        let itemCount = binaryParser.getLong()\n        let reserved = binaryParser.getLong()\n        let chromToId = {}\n        let idToChrom = []\n\n        this.header = {\n            magic: magic,\n            blockSize: blockSize,\n            keySize: keySize,\n            valSize: valSize,\n            itemCount: itemCount,\n            reserved: reserved\n        }\n        this.chromToID = chromToId\n        this.idToChrom = idToChrom\n\n        // Recursively walk tree to populate dictionary\n        readTreeNode(binaryParser, -1)\n\n\n        function readTreeNode(byteBuffer, offset) {\n\n            if (offset >= 0) byteBuffer.position = offset\n\n            let type = byteBuffer.getByte(),\n                reserved = byteBuffer.getByte(),\n                count = byteBuffer.getUShort(),\n                i,\n                key,\n                chromId,\n                chromSize,\n                childOffset,\n                bufferOffset,\n                currOffset\n\n\n            if (type === 1) {\n\n                for (i = 0; i < count; i++) {\n\n                    key = byteBuffer.getFixedLengthTrimmedString(keySize)\n                    chromId = byteBuffer.getInt()\n                    chromSize = byteBuffer.getInt()\n\n                    if (genome) key = genome.getChromosomeName(key)  // Translate to canonical chr name\n                    chromToId[key] = chromId\n                    idToChrom[chromId] = key\n\n                }\n            } else { // non-leaf\n\n                for (i = 0; i < count; i++) {\n\n                    key = byteBuffer.getFixedLengthTrimmedString(keySize)\n                    childOffset = byteBuffer.getLong()\n                    bufferOffset = childOffset - startOffset\n                    currOffset = byteBuffer.position\n                    readTreeNode(byteBuffer, bufferOffset)\n                    byteBuffer.position = currOffset\n                }\n            }\n\n        }\n    }\n}\n\n/**\n * Return true if {chrIdx1:startBase-chrIdx2:endBase} overlaps item's interval\n * @returns {boolean}\n */\nfunction overlaps(item, chrIdx1, startBase, chrIdx2, endBase) {\n\n    if (!item) {\n        console.log(\"null item for \" + chrIdx1 + \" \" + startBase + \" \" + endBase)\n        return false\n    }\n\n    return ((chrIdx2 > item.startChrom) || (chrIdx2 === item.startChrom && endBase >= item.startBase)) &&\n        ((chrIdx1 < item.endChrom) || (chrIdx1 === item.endChrom && startBase <= item.endBase))\n\n\n}\n\nclass BWTotalSummary {\n\n    constructor(byteBuffer) {\n        if (byteBuffer) {\n            this.basesCovered = byteBuffer.getLong()\n            this.minVal = byteBuffer.getDouble()\n            this.maxVal = byteBuffer.getDouble()\n            this.sumData = byteBuffer.getDouble()\n            this.sumSquares = byteBuffer.getDouble()\n            computeStats.call(this)\n        } else {\n            this.basesCovered = 0\n            this.minVal = 0\n            this.maxVal = 0\n            this.sumData = 0\n            this.sumSquares = 0\n            this.mean = 0\n            this.stddev = 0\n        }\n    }\n}\n\nfunction computeStats() {\n    let n = this.basesCovered\n    if (n > 0) {\n        this.mean = this.sumData / n\n        this.stddev = Math.sqrt(this.sumSquares / (n - 1))\n\n        let min = this.minVal < 0 ? this.mean - 2 * this.stddev : 0,\n            max = this.maxVal > 0 ? this.mean + 2 * this.stddev : 0\n\n        this.defaultRange = {\n            min: min,\n            max: max\n        }\n    }\n}\n\nfunction zoomLevelForScale(bpPerPixel, zoomLevelHeaders) {\n    let level\n    for (let i = 0; i < zoomLevelHeaders.length; i++) {\n        const zl = zoomLevelHeaders[i]\n        if (zl.reductionLevel < bpPerPixel) {\n            level = zl\n            break\n        }\n    }\n    return level\n}\n\n\nfunction decodeWigData(data, chrIdx1, bpStart, chrIdx2, bpEnd, featureArray, chrDict) {\n\n    const binaryParser = new BinaryParser(data)\n    const chromId = binaryParser.getInt()\n    const blockStart = binaryParser.getInt()\n    let chromStart = blockStart\n    let chromEnd = binaryParser.getInt()\n    const itemStep = binaryParser.getInt()\n    const itemSpan = binaryParser.getInt()\n    const type = binaryParser.getByte()\n    const reserved = binaryParser.getByte()\n    let itemCount = binaryParser.getUShort()\n\n    if (chromId >= chrIdx1 && chromId <= chrIdx2) {\n\n        let idx = 0;\n        while (itemCount-- > 0) {\n            let value\n            switch (type) {\n                case 1:\n                    chromStart = binaryParser.getInt()\n                    chromEnd = binaryParser.getInt()\n                    value = binaryParser.getFloat()\n                    break\n                case 2:\n                    chromStart = binaryParser.getInt()\n                    value = binaryParser.getFloat()\n                    chromEnd = chromStart + itemSpan\n                    break\n                case 3:  // Fixed step\n                    value = binaryParser.getFloat()\n                    chromStart = blockStart + idx * itemStep\n                    chromEnd = chromStart + itemSpan\n                    idx++\n                    break\n            }\n\n            if (chromId < chrIdx1 || (chromId === chrIdx1 && chromEnd < bpStart)) continue\n            else if (chromId > chrIdx2 || (chromId === chrIdx2 && chromStart >= bpEnd)) break\n\n            if (Number.isFinite(value)) {\n                const chr = chrDict[chromId]\n                featureArray.push({chr: chr, start: chromStart, end: chromEnd, value: value})\n            }\n\n        }\n    }\n}\n\nfunction getBedDataDecoder() {\n\n    const minSize = 3 * 4 + 1   // Minimum # of bytes required for a bed record\n    const decoder = getDecoder(this.header.definedFieldCount, this.header.fieldCount, this.autoSql, this.format)\n    return function (data, chrIdx1, bpStart, chrIdx2, bpEnd, featureArray, chrDict) {\n        const binaryParser = new BinaryParser(data)\n        while (binaryParser.remLength() >= minSize) {\n\n            const chromId = binaryParser.getInt()\n            const chr = chrDict[chromId]\n            const chromStart = binaryParser.getInt()\n            const chromEnd = binaryParser.getInt()\n            const rest = binaryParser.getString()\n            if (chromId < chrIdx1 || (chromId === chrIdx1 && chromEnd < bpStart)) continue\n            else if (chromId > chrIdx2 || (chromId === chrIdx2 && chromStart >= bpEnd)) break\n\n            if (chromEnd > 0) {\n                const feature = {chr: chr, start: chromStart, end: chromEnd}\n                featureArray.push(feature)\n                const tokens = rest.split(\"\\t\")\n                decoder(feature, tokens)\n            }\n        }\n    }\n}\n\n\nfunction decodeZoomData(data, chrIdx1, bpStart, chrIdx2, bpEnd, featureArray, chrDict, windowFunction) {\n\n    const binaryParser = new BinaryParser(data)\n    const minSize = 8 * 4  // Minimum # of bytes required for a zoom record\n\n\n    while (binaryParser.remLength() >= minSize) {\n        const chromId = binaryParser.getInt()\n        const chr = chrDict[chromId]\n        const chromStart = binaryParser.getInt()\n        const chromEnd = binaryParser.getInt()\n        const validCount = binaryParser.getInt()\n        const minVal = binaryParser.getFloat()\n        const maxVal = binaryParser.getFloat()\n        const sumData = binaryParser.getFloat()\n        const sumSquares = binaryParser.getFloat()\n        let value\n        switch (windowFunction) {\n            case \"min\":\n                value = minVal\n                break\n            case \"max\":\n                value = maxVal\n                break\n            default:\n                value = validCount === 0 ? 0 : sumData / validCount\n        }\n\n        if (chromId < chrIdx1 || (chromId === chrIdx1 && chromEnd < bpStart)) continue\n        else if (chromId > chrIdx2 || (chromId === chrIdx2 && chromStart >= bpEnd)) break\n\n\n        if (Number.isFinite(value)) {\n            featureArray.push({chr: chr, start: chromStart, end: chromEnd, value: value})\n\n\n        }\n    }\n}\n\nclass DataBuffer {\n\n    constructor(dataURI) {\n        this.data = BGZip.decodeDataURI(dataURI).buffer\n    }\n\n    /**\n     * igvxhr interface\n     * @param ignore\n     * @param options\n     * @returns {any}\n     */\n    loadArrayBuffer(ignore, options) {\n        const range = options.range\n        return range ? this.data.slice(range.start, range.start + range.size) : this.data\n    }\n\n    /**\n     * BufferedReader interface\n     *\n     * @param requestedRange - byte rangeas {start, size}\n     * @param fulfill - function to receive result\n     * @param asUint8 - optional flag to return result as an UInt8Array\n     */\n    async dataViewForRange(requestedRange, asUint8) {\n        const len = Math.min(this.data.byteLength - requestedRange.start, requestedRange.size)\n        return asUint8 ?\n            new Uint8Array(this.data, requestedRange.start, len) :\n            new DataView(this.data, requestedRange.start, len)\n    }\n}\n\nexport default BWReader\n","function scoreShade(score, color) {\n    const alpha = Math.min(1, 0.11 + 0.89 * (score / 779))\n    return alpha.toString()\n}\n\nfunction parseAutoSQL(str) {\n\n    let table\n    const fields = []\n    let startDecoding = false\n    const lines = str.trim().split(/\\s*[\\r\\n]+\\s*/g)\n    for (let line of lines) {\n        if (line.startsWith('table')) {\n            table = line.split(/\\s+/)[1].trim()\n        } else if (line.startsWith('(')) {\n            startDecoding = true\n        } else if (line.startsWith(')')) {\n        } else if (startDecoding) {\n            if (line.length > 0) {\n                const idx = line.indexOf(';')\n                const tokens = line.substr(0, idx).split(/\\s+/)\n                const description = line.substr(idx + 1).replace(/\"/g, '').trim()\n                fields.push({\n                    type: tokens[0],\n                    name: tokens[1],\n                    description: description\n                })\n            }\n        }\n    }\n    return {\n        table: table,\n        fields: fields\n    }\n}\n\n\nexport {scoreShade, parseAutoSQL}","import {IGVColor} from \"../../node_modules/igv-utils/src/index.js\"\n\nfunction getDecoder(definedFieldCount, fieldCount, autoSql, format) {\n\n    if (\"biginteract\" === format || (autoSql && ('chromatinInteract' === autoSql.table) || 'interact' === autoSql.table)) {\n        return decodeInteract\n    } else {\n        const standardFieldCount = definedFieldCount - 3\n        return function (feature, tokens) {\n\n            if (standardFieldCount > 0) {\n                feature.name = tokens[0]\n            }\n            if (standardFieldCount > 1) {\n                feature.score = Number(tokens[1])\n            }\n            if (standardFieldCount > 2) {\n                feature.strand = tokens[2]\n            }\n            if (standardFieldCount > 3) {\n                feature.cdStart = parseInt(tokens[3])\n            }\n            if (standardFieldCount > 4) {\n                feature.cdEnd = parseInt(tokens[4])\n            }\n            if (standardFieldCount > 5) {\n                if (tokens[5] !== \".\" && tokens[5] !== \"0\" && tokens[5] !== \"-1\") {\n                    const c = IGVColor.createColorString(tokens[5])\n                    feature.color = c.startsWith(\"rgb\") ? c : undefined\n                }\n            }\n            if (standardFieldCount > 8) {\n                const exonCount = parseInt(tokens[6])\n                const exonSizes = tokens[7].split(',')\n                const exonStarts = tokens[8].split(',')\n                const exons = []\n                for (let i = 0; i < exonCount; i++) {\n                    const eStart = feature.start + parseInt(exonStarts[i])\n                    const eEnd = eStart + parseInt(exonSizes[i])\n                    exons.push({start: eStart, end: eEnd})\n                }\n                findUTRs(exons, feature.cdStart, feature.cdEnd)\n                feature.exons = exons\n            }\n\n            if (autoSql) {\n                // TODO -- these should be equal, validate?  fieldCount-definedFieldCount, as.fields.length, tokens.length-3\n                const extraStart = definedFieldCount\n                for (let i = extraStart; i < fieldCount; i++) {\n                    if (i < autoSql.fields.length) {\n                        const name = autoSql.fields[i].name\n                        const value = tokens[i - 3]\n                        feature[name] = value\n                    }\n                }\n            }\n        }\n    }\n\n    //table chromatinInteract\n// \"Chromatin interaction between two regions\"\n//     (\n//     string chrom;      \"Chromosome (or contig, scaffold, etc.). For interchromosomal, use 2 records\"\n//     uint chromStart;   \"Start position of lower region. For interchromosomal, set to chromStart of this region\"\n//     uint chromEnd;     \"End position of upper region. For interchromosomal, set to chromEnd of this region\"\n//     string name;       \"Name of item, for display\"\n//     uint score;        \"Score from 0-1000\"\n//     double value;      \"Strength of interaction or other data value. Typically basis for score\"\n//     string exp;        \"Experiment name (metadata for filtering). Use . if not applicable\"\n//     string color;      \"Item color.  Specified as r,g,b or hexadecimal #RRGGBB or html color name, as in //www.w3.org/TR/css3-color/#html4.\"\n//     string region1Chrom;  \"Chromosome of lower region. For non-directional interchromosomal, chrom of this region.\"\n//     uint region1Start;  \"Start position of lower/this region\"\n//     uint region1End;    \"End position in chromosome of lower/this region\"\n//     string region1Name;  \"Identifier of lower/this region\"\n//     string region1Strand; \"Orientation of lower/this region: + or -.  Use . if not applicable\"\n//     string region2Chrom; \"Chromosome of upper region. For non-directional interchromosomal, chrom of other region\"\n//     uint region2Start;  \"Start position in chromosome of upper/this region\"\n//     uint region2End;    \"End position in chromosome of upper/this region\"\n//     string region2Name; \"Identifier of upper/this region\"\n//     string region2Strand; \"Orientation of upper/this region: + or -.  Use . if not applicable\"\n//     )\n    function decodeInteract(feature, tokens) {\n\n        feature.chr1 = tokens[5]\n        feature.start1 = Number.parseInt(tokens[6])\n        feature.end1 = Number.parseInt(tokens[7])\n\n        feature.chr2 = tokens[10]\n        feature.start2 = Number.parseInt(tokens[11])\n        feature.end2 = Number.parseInt(tokens[12])\n\n        feature.name = tokens[0]\n        feature.score = Number(tokens[1])\n        feature.value = Number(tokens[2])\n        feature.color = tokens[4] === '.' ? undefined : tokens[4] === \"0\" ? \"rgb(0,0,0)\" : tokens[4]\n\n        return feature\n    }\n}\n\nfunction findUTRs(exons, cdStart, cdEnd) {\n\n    for (let exon of exons) {\n        const end = exon.end\n        const start = exon.start\n        if (end < cdStart || start > cdEnd) {\n            exon.utr = true\n        } else {\n            if (cdStart >= start && cdStart <= end) {\n                exon.cdStart = cdStart\n            }\n            if (cdEnd >= start && cdEnd <= end) {\n                exon.cdEnd = cdEnd\n            }\n        }\n    }\n}\n\nexport default getDecoder\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport BWReader from \"./bwReader.js\"\nimport pack from \"../feature/featurePacker.js\"\n\nclass BWSource {\n\n    constructor(config, genome) {\n        this.reader = new BWReader(config, genome)\n        this.genome = genome\n        this.format = config.format || \"bigwig\"\n        this.wgValues = {}\n        this.queryable = true\n    }\n\n    async getFeatures({chr, start, end, bpPerPixel, windowFunction}) {\n\n        const isBigWig = this.reader.type === \"bigwig\"\n\n        const features = (chr.toLowerCase() === \"all\") ?\n            (isBigWig ? await this.getWGValues(windowFunction) : []) :\n            await this.reader.readFeatures(chr, start, chr, end, bpPerPixel, windowFunction)\n\n        if (!isBigWig) {\n            pack(features)\n        }\n        return features\n    }\n\n    async getHeader() {\n        return this.reader.loadHeader()\n    }\n\n    getDefaultRange() {\n        if (this.reader.totalSummary !== undefined) {\n            return this.reader.totalSummary.defaultRange\n        } else {\n            return undefined\n        }\n    }\n\n    async defaultVisibilityWindow() {\n        return this.reader.defaultVisibilityWindow\n    }\n\n    async getWGValues(windowFunction) {\n\n        const nominalScreenWidth = 1000      // This doesn't need to be precise\n        const genome = this.genome\n\n        if (this.wgValues[windowFunction]) {\n            return this.wgValues[windowFunction]\n        } else {\n\n            const bpPerPixel = genome.getGenomeLength() / nominalScreenWidth\n            const features = await this.reader.readWGFeatures(bpPerPixel, windowFunction)\n            let wgValues = []\n            for (let f of features) {\n                const chr = f.chr\n                const offset = genome.getCumulativeOffset(chr)\n                const wgFeature = Object.assign({}, f)\n                wgFeature.chr = \"all\"\n                wgFeature.start = offset + f.start\n                wgFeature.end = offset + f.end\n                wgValues.push(wgFeature)\n            }\n            this.wgValues[windowFunction] = wgValues\n            return wgValues\n        }\n    }\n\n    supportsWholeGenome() {\n        return this.reader.type === \"bigwig\"\n    }\n\n    async trackType() {\n        return this.reader.getTrackType()\n    }\n}\n\nexport default BWSource\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport BinaryParser from \"../binary.js\"\nimport {BGZip, igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\n\nconst GZIP_FLAG = 0x1\n\nclass TDFReader {\n\n    constructor(config, genome) {\n        this.config = config\n        this.genome = genome\n        this.path = config.url\n        this.groupCache = {}\n        this.datasetCache = {}\n    }\n\n\n    async readHeader() {\n\n        if (this.magic !== undefined) {\n            return this   // Already read\n        }\n\n        let data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {range: {start: 0, size: 64000}}))\n        let binaryParser = new BinaryParser(new DataView(data))\n        this.magic = binaryParser.getInt()\n        this.version = binaryParser.getInt()\n        this.indexPos = binaryParser.getLong()\n        this.indexSize = binaryParser.getInt()\n        const headerSize = binaryParser.getInt()\n\n\n        if (this.version >= 2) {\n            let nWindowFunctions = binaryParser.getInt()\n            this.windowFunctions = []\n            while (nWindowFunctions-- > 0) {\n                this.windowFunctions.push(binaryParser.getString())\n            }\n        }\n\n        this.trackType = binaryParser.getString()\n        this.trackLine = binaryParser.getString()\n\n        let nTracks = binaryParser.getInt()\n        this.trackNames = []\n        while (nTracks-- > 0) {\n            this.trackNames.push(binaryParser.getString())\n        }\n        this.genomeID = binaryParser.getString()\n        this.flags = binaryParser.getInt()\n        this.compressed = (this.flags & GZIP_FLAG) !== 0\n\n        // Now read index\n        data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {\n            range: {\n                start: this.indexPos,\n                size: this.indexSize\n            }\n        }))\n        binaryParser = new BinaryParser(new DataView(data))\n        this.datasetIndex = {}\n        let nEntries = binaryParser.getInt()\n        while (nEntries-- > 0) {\n            const name = binaryParser.getString()\n            const pos = binaryParser.getLong()\n            const size = binaryParser.getInt()\n            this.datasetIndex[name] = {position: pos, size: size}\n        }\n\n        this.groupIndex = {}\n        nEntries = binaryParser.getInt()\n        while (nEntries-- > 0) {\n            const name = binaryParser.getString()\n            const pos = binaryParser.getLong()\n            const size = binaryParser.getInt()\n            this.groupIndex[name] = {position: pos, size: size}\n        }\n\n        return this\n    }\n\n    async readDataset(chr, windowFunction, zoom) {\n\n        const key = chr + \"_\" + windowFunction + \"_\" + zoom\n\n        if (this.datasetCache[key]) {\n            return this.datasetCache[key]\n\n        } else {\n            await this.readHeader()\n            const wf = (this.version < 2) ? \"\" : \"/\" + windowFunction\n            const zoomString = (chr.toLowerCase() === \"all\" || zoom === undefined) ? \"0\" : zoom.toString()\n\n            let dsName\n            if (windowFunction === \"raw\") {\n                dsName = \"/\" + chr + \"/raw\"\n            } else {\n                dsName = \"/\" + chr + \"/z\" + zoomString + wf\n            }\n            const indexEntry = this.datasetIndex[dsName]\n\n            if (indexEntry === undefined) {\n                return undefined\n            }\n\n            const data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {\n                range: {\n                    start: indexEntry.position,\n                    size: indexEntry.size\n                }\n            }))\n\n            if (!data) {\n                return undefined\n            }\n\n            const binaryParser = new BinaryParser(new DataView(data))\n            let nAttributes = binaryParser.getInt()\n            const attributes = {}\n            while (nAttributes-- > 0) {\n                attributes[binaryParser.getString()] = binaryParser.getString()\n            }\n            const dataType = binaryParser.getString()\n            const tileWidth = binaryParser.getFloat()\n            let nTiles = binaryParser.getInt()\n            const tiles = []\n            while (nTiles-- > 0) {\n                tiles.push({position: binaryParser.getLong(), size: binaryParser.getInt()})\n            }\n\n            const dataset = {\n                name: dsName,\n                attributes: attributes,\n                dataType: dataType,\n                tileWidth: tileWidth,\n                tiles: tiles\n            }\n\n            this.datasetCache[key] = dataset\n            return dataset\n        }\n    }\n\n    async readRootGroup() {\n\n        const genome = this.genome\n        const rootGroup = this.groupCache[\"/\"]\n        if (rootGroup) {\n            return rootGroup\n        } else {\n\n            const group = await this.readGroup(\"/\")\n            const names = group[\"chromosomes\"]\n            const maxZoomString = group[\"maxZoom\"]\n\n            // Now parse out interesting attributes.\n            if (maxZoomString) {\n                this.maxZoom = Number(maxZoomString)\n            }\n\n            const totalCountString = group[\"totalCount\"]\n            if (totalCountString) {\n                group.totalCount = Number(totalCountString)\n            }\n\n            // Chromosome names\n            const chrAliasTable = {}\n            if (names) {\n                names.split(\",\").forEach(function (chr) {\n                    const canonicalName = genome.getChromosomeName(chr)\n                    chrAliasTable[canonicalName] = chr\n                })\n            }\n            this.chrAliasTable = chrAliasTable\n\n            this.groupCache[\"/\"] = group\n            return group\n        }\n    }\n\n    async readGroup(name) {\n\n        const group = this.groupCache[name]\n        if (group) {\n            return group\n        } else {\n\n            await this.readHeader()\n            const indexEntry = this.groupIndex[name]\n            if (indexEntry === undefined) {\n                return undefined\n            }\n\n            const data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {\n                range: {\n                    start: indexEntry.position,\n                    size: indexEntry.size\n                }\n            }))\n\n            if (!data) {\n                return undefined\n            }\n\n            const binaryParser = new BinaryParser(new DataView(data))\n            const group = {name: name}\n            let nAttributes = binaryParser.getInt()\n            while (nAttributes-- > 0) {\n                const key = binaryParser.getString()\n                const value = binaryParser.getString()\n                group[key] = value\n            }\n            this.groupCache[name] = group\n            return group\n        }\n    }\n\n\n    async readTiles(tileIndeces, nTracks) {\n\n        tileIndeces.sort(function (a, b) {\n            return a.position - b.position\n        })\n\n        tileIndeces = tileIndeces.filter(function (idx) {\n            return idx.size > 0\n        })\n\n        if (tileIndeces.length === 0) {\n            return Promise.resolve([])\n        }\n\n        const firstEntry = tileIndeces[0]\n        const lastEntry = tileIndeces[tileIndeces.length - 1]\n        const position = firstEntry.position\n        const size = (lastEntry.position + lastEntry.size) - position\n        const data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {\n            range: {\n                start: position,\n                size: size\n            }\n        }))\n\n        const tiles = []\n\n        // Loop through and decode tiles\n        for (let indexEntry of tileIndeces) {\n            const start = indexEntry.position - position\n            const size = indexEntry.size\n            if (size > 0) {\n                let tileData\n                if (this.compressed) {\n                    const plain = BGZip.inflate(data.slice(start, start + size))\n                    tileData = plain.buffer\n                } else {\n                    tileData = data.slice(start, start + size)\n                }\n\n                const binaryParser = new BinaryParser(new DataView(tileData))\n                const type = binaryParser.getString()\n                let tile\n                switch (type) {\n                    case \"fixedStep\":\n                        tile = createFixedStep(binaryParser, nTracks)\n                        break\n                    case \"variableStep\":\n                        tile = createVariableStep(binaryParser, nTracks)\n                        break\n                    case \"bed\":\n                    case \"bedWithName\":\n                        tile = createBed(binaryParser, nTracks, type)\n                        break\n                    default:\n                        throw \"Unknown tile type: \" + type\n                }\n                tiles.push(tile)\n            }\n        }\n        return tiles\n    }\n\n    async readTile(indexEntry, nTracks) {\n\n        let data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {\n            range: {\n                start: indexEntry.position,\n                size: indexEntry.size\n            }\n        }))\n\n        if (this.compressed) {\n            const plain = BGZip.inflate(data)\n            data = plain.buffer\n        }\n\n        const binaryParser = new BinaryParser(new DataView(data))\n        const type = binaryParser.getString()\n        switch (type) {\n            case \"fixedStep\":\n                return createFixedStep(binaryParser, nTracks)\n            case \"variableStep\":\n                return createVariableStep(binaryParser, nTracks)\n            case \"bed\":\n            case \"bedWithName\":\n                return createBed(binaryParser, nTracks, type)\n            default:\n                throw \"Unknown tile type: \" + type\n        }\n    }\n\n}\n\nfunction createFixedStep(binaryParser, nTracks) {\n    const nPositions = binaryParser.getInt()\n    const start = binaryParser.getInt()\n    const span = binaryParser.getFloat()\n\n    const data = []\n    let nt = nTracks\n    while (nt-- > 0) {\n        let np = nPositions\n        const dtrack = []\n        while (np-- > 0) {\n            dtrack.push(binaryParser.getFloat())\n        }\n        data.push(dtrack)\n    }\n\n    return {\n        type: \"fixedStep\",\n        start: start,\n        span: span,\n        data: data,\n        nTracks: nTracks,\n        nPositions: nPositions\n    }\n}\n\nfunction createVariableStep(binaryParser, nTracks) {\n\n    const tileStart = binaryParser.getInt()\n    const span = binaryParser.getFloat()\n    const nPositions = binaryParser.getInt()\n    const start = []\n\n    let np = nPositions\n    while (np-- > 0) {\n        start.push(binaryParser.getInt())\n    }\n    const nS = binaryParser.getInt()  // # of samples, ignored but should === nTracks\n\n    const data = []\n    let nt = nTracks\n    while (nt-- > 0) {\n        np = nPositions\n        const dtrack = []\n        while (np-- > 0) {\n            dtrack.push(binaryParser.getFloat())\n        }\n        data.push(dtrack)\n    }\n\n    return {\n        type: \"variableStep\",\n        tileStart: tileStart,\n        span: span,\n        start: start,\n        data: data,\n        nTracks: nTracks,\n        nPositions: nPositions\n    }\n}\n\nfunction createBed(binaryParser, nTracks, type) {\n\n    const nPositions = binaryParser.getInt()\n\n    let n = nPositions\n    const start = []\n    while (n-- > 0) {\n        start.push(binaryParser.getInt())\n    }\n\n    n = nPositions\n    const end = []\n    while (n-- > 0) {\n        end.push(binaryParser.getInt())\n    }\n\n    const nS = binaryParser.getInt()  // # of samples, ignored but should === nTracks\n    const data = []\n    let nt = nTracks\n    while (nt-- > 0) {\n        let np = nPositions\n        const dtrack = []\n        while (np-- > 0) {\n            dtrack.push(binaryParser.getFloat())\n        }\n        data.push(dtrack)\n    }\n\n    if (type === \"bedWithName\") {\n        n = nPositions\n        const name = []\n        while (n-- > 0) {\n            name.push(binaryParser.getString())\n        }\n    }\n\n    return {\n        type: type,\n        start: start,\n        end: end,\n        data: data,\n        nTracks: nTracks,\n        nPositions: nPositions\n    }\n\n}\n\nexport default TDFReader","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport TDFReader from \"./tdfReader.js\"\nimport GenomicInterval from \"../genome/genomicInterval.js\"\n\nclass TDFSource {\n\n    constructor(config, genome) {\n        this.genome = genome\n        this.windowFunction = config.windowFunction || \"mean\"\n        this.reader = new TDFReader(config, genome)\n        this.queryable = true\n    }\n\n    async getFeatures({chr, start, end, bpPerPixel}) {\n\n        if (chr.toLowerCase() === \"all\") {\n            const wgFeatures = []\n            const genome = this.genome\n            const chrNames = this.genome.wgChromosomeNames\n            if (chrNames) {\n                for (let c of genome.wgChromosomeNames) {\n                    const len = genome.getChromosome(c).bpLength\n                    bpPerPixel = len / 1000\n                    const chrFeatures = await this._getFeatures(c, 0, len, bpPerPixel)\n                    if (chrFeatures) {\n                        for (let f of chrFeatures) {\n                            const wg = Object.assign({}, f)\n                            wg.chr = \"all\"\n                            wg.start = genome.getGenomeCoordinate(f.chr, f.start)\n                            wg.end = genome.getGenomeCoordinate(f.chr, f.end)\n                            wg._f = f\n                            wgFeatures.push(wg)\n                        }\n                    }\n                }\n            }\n            return wgFeatures\n\n        } else {\n            return this._getFeatures(chr, start, end, bpPerPixel)\n        }\n    }\n\n    async _getFeatures(chr, start, end, bpPerPixel) {\n        const genomicInterval = new GenomicInterval(chr, start, end)\n        const genome = this.genome\n\n\n        if (!this.rootGroup) {\n            this.rootGroup = await this.reader.readRootGroup()\n            if (!this.normalizationFactor) {\n                const totalCount = this.rootGroup.totalCount\n                if (totalCount) {\n                    this.normalizationFactor = 1.0e6 / totalCount\n                }\n            }\n        }\n\n        genomicInterval.bpPerPixel = bpPerPixel\n        const zoom = zoomLevelForScale(chr, bpPerPixel, genome)\n        let queryChr = this.reader.chrAliasTable[chr]\n        let maxZoom = this.reader.maxZoom\n        if (queryChr === undefined) queryChr = chr\n        if (maxZoom === undefined) maxZoom = -1\n\n        const wf = zoom > maxZoom ? \"raw\" : this.windowFunction\n        const dataset = await this.reader.readDataset(queryChr, wf, zoom)\n        if (dataset == null) {\n            return []\n        }\n\n        const tileWidth = dataset.tileWidth\n        const startTile = Math.floor(start / tileWidth)\n        const endTile = Math.floor(end / tileWidth)\n        const NTRACKS = 1   // TODO read this\n        const tiles = await this.reader.readTiles(dataset.tiles.slice(startTile, endTile + 1), NTRACKS)\n        const features = []\n        for (let tile of tiles) {\n            switch (tile.type) {\n                case \"bed\":\n                    decodeBedTile(tile, chr, start, end, bpPerPixel, features)\n                    break\n                case \"variableStep\":\n                    decodeVaryTile(tile, chr, start, end, bpPerPixel, features)\n                    break\n                case \"fixedStep\":\n                    decodeFixedTile(tile, chr, start, end, bpPerPixel, features)\n                    break\n                default:\n                    throw (\"Unknown tile type: \" + tile.type)\n            }\n        }\n        features.sort(function (a, b) {\n            return a.start - b.start\n        })\n\n        return features\n    }\n\n    get supportsWholeGenome() {\n        return true\n    }\n}\n\nfunction decodeBedTile(tile, chr, bpStart, bpEnd, bpPerPixel, features) {\n\n    const nPositions = tile.nPositions\n    const starts = tile.start\n    const ends = tile.end\n    const data = tile.data[0]   // Single track for now\n    for (let i = 0; i < nPositions; i++) {\n        const s = starts[i]\n        const e = ends[i]\n        if (e < bpStart) continue\n        if (s > bpEnd) break\n        features.push({\n            chr: chr,\n            start: s,\n            end: e,\n            value: data[i]\n        })\n    }\n}\n\nfunction decodeVaryTile(tile, chr, bpStart, bpEnd, bpPerPixel, features) {\n\n    const nPositions = tile.nPositions\n    const starts = tile.start\n    const span = tile.span\n    const data = tile.data[0]   // Single track for now\n    for (let i = 0; i < nPositions; i++) {\n        const s = starts[i]\n        const e = s + span\n        if (e < bpStart) continue\n        if (s > bpEnd) break\n        features.push({\n            chr: chr,\n            start: s,\n            end: e,\n            value: data[i]\n        })\n    }\n}\n\nfunction decodeFixedTile(tile, chr, bpStart, bpEnd, bpPerPixel, features) {\n\n    const nPositions = tile.nPositions\n    let s = tile.start\n    const span = tile.span\n    const data = tile.data[0]   // Single track for now\n\n    for (let i = 0; i < nPositions; i++) {\n        const e = s + span\n        if (s > bpEnd) break\n        if (e >= bpStart) {\n            if (!Number.isNaN(data[i])) {\n                features.push({\n                    chr: chr,\n                    start: s,\n                    end: e,\n                    value: data[i]\n                })\n            }\n        }\n        s = e\n    }\n}\n\n\nvar log2 = Math.log(2)\n\nfunction zoomLevelForScale(chr, bpPerPixel, genome) {\n\n    // Convert bpPerPixel to IGV \"zoom\" level.   This is a bit convoluted,  IGV computes zoom levels assuming\n    // display in a 700 pixel window.  The fully zoomed out view of a chromosome is zoom level \"0\".\n    // Zoom level 1 is magnified 2X,  and so forth\n\n    var chrSize = genome.getChromosome(chr).bpLength\n\n    return Math.ceil(Math.log(Math.max(0, (chrSize / (bpPerPixel * 700)))) / log2)\n}\n\nexport default TDFSource\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014-2015 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {FeatureCache} from \"../../node_modules/igv-utils/src/index.js\"\nimport {computeWGFeatures, packFeatures} from \"./featureUtils.js\"\n\n/**\n * feature source for features supplied directly, as opposed to reading and parsing from a file or webservice\n *\n * @param config\n * @constructor\n */\nclass StaticFeatureSource {\n\n    constructor(config, genome) {\n\n        this.config = config\n        this.genome = genome\n        this.queryable = false\n        this.searchable = config.searchable !== false  // searchable by default\n        this.updateFeatures(config.features)\n    }\n\n    updateFeatures(features) {\n        features = fixFeatures(features, this.genome)\n        packFeatures(features)\n        if (this.config.mappings) {\n            mapProperties(features, this.config.mappings)\n        }\n        this.featureCache = new FeatureCache(features, this.genome)\n\n        if (this.searchable || this.config.searchableFields) {\n            this.genome.addFeaturesToDB(features, this.config)\n        }\n    }\n\n    /**\n     * Required function for all data source objects.  Fetches features for the\n     * range requested.\n     *\n     * This function is complex due to the variety of reader types backing it, some indexed, some queryable,\n     * some not.\n     *\n     * @param chr\n     * @param start\n     * @param end\n     * @param bpPerPixel\n     */\n    async getFeatures({chr, start, end, bpPerPixel, visibilityWindow}) {\n\n        const genome = this.genome\n        const queryChr = genome ? genome.getChromosomeName(chr) : chr\n        const isWholeGenome = (\"all\" === queryChr.toLowerCase())\n\n        // Various conditions that can require a feature load\n        //   * view is \"whole genome\" but no features are loaded\n        //   * cache is disabled\n        //   * cache does not contain requested range\n        if (isWholeGenome) {\n            return computeWGFeatures(this.featureCache.getAllFeatures(), this.genome, this.maxWGCount)\n        } else {\n            return this.featureCache.queryFeatures(queryChr, start, end)\n        }\n    }\n\n    //\n    // supportsWholeGenome() {\n    //    return true\n    // }\n\n    getAllFeatures() {\n        return this.featureCache.getAllFeatures()\n    }\n\n    supportsWholeGenome() {\n        return true\n    }\n\n\n}\n\n\n/**\n * This function is used to apply properties normally added during parsing to  features supplied directly in the\n * config as an array of objects.   At the moment the only application is bedpe type features.\n * @param features\n */\nfunction fixFeatures(features, genome) {\n\n    if (genome) {\n        for (let feature of features) {\n            feature.chr = genome.getChromosomeName(feature.chr)\n        }\n    }\n\n    return features\n}\n\n\n\nfunction mapProperties(features, mappings) {\n    let mappingKeys = Object.keys(mappings)\n    features.forEach(function (f) {\n        mappingKeys.forEach(function (key) {\n            f[key] = f[mappings[key]]\n        })\n    })\n}\n\n\n\nexport default StaticFeatureSource\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014-2015 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport TextFeatureSource from \"./textFeatureSource.js\"\nimport BWSource from \"../bigwig/bwSource.js\"\nimport TDFSource from \"../tdf/tdfSource.js\"\nimport StaticFeatureSource from \"./staticFeatureSource.js\"\n\nconst bbFormats = new Set(['bigwig', 'bw', 'bigbed', 'bb', 'biginteract', 'biggenepred', 'bignarrowpeak'])\n\nfunction FeatureSource(config, genome) {\n\n    const format = config.format ? config.format.toLowerCase() : undefined\n\n    if (config.features) {\n        return new StaticFeatureSource(config, genome)\n    } else if (bbFormats.has(format)) {\n        return new BWSource(config, genome)\n    } else if (\"tdf\" === format) {\n        return new TDFSource(config, genome)\n    } else {\n        return new TextFeatureSource(config, genome)\n    }\n}\n\nexport default FeatureSource\n","import {FileUtils, StringUtils} from '../../node_modules/igv-utils/src/index.js'\nimport FeatureSource from '../feature/featureSource.js'\nimport {appleCrayonRGBA} from '../util/colorPalletes.js'\nimport {computeWGFeatures} from \"../feature/featureUtils.js\"\nimport * as TrackUtils from \"../util/trackUtils.js\"\n\n\nconst appleCrayonColorName = 'nickel'\n\nconst ROI_DEFAULT_ALPHA = 2 / 16\n\nconst ROI_DEFAULT_COLOR = appleCrayonRGBA(appleCrayonColorName, ROI_DEFAULT_ALPHA)\nconst ROI_DEFAULT_HEADER_COLOR = 'rgb(190,190,190)'\n\nconst ROI_USER_HEADER_DEFINED_COLOR = 'rgba(155,185,129)'\nconst ROI_USER_DEFINED_COLOR = ROI_DEFAULT_COLOR\n\nclass ROISet {\n\n    constructor(config, genome) {\n\n        this.url = config.url\n\n        if (config.name) {\n            this.name = config.name\n        } else if (config.url && FileUtils.isFile(config.url)) {\n            this.name = config.url.name\n        } else if (config.url && StringUtils.isString(config.url) && !config.url.startsWith(\"data:\")) {\n            this.name = FileUtils.getFilename(config.url)\n        }\n\n        this.isUserDefined = config.isUserDefined\n\n        if (config.features) {\n            this.featureSource = new DynamicFeatureSource(config.features, genome)\n        } else {\n            if (config.format) {\n                config.format = config.format.toLowerCase()\n            } else {\n                const filename = FileUtils.getFilename(config.url)\n                config.format = TrackUtils.inferFileFormat(filename)\n            }\n            this.featureSource = config.featureSource || FeatureSource(config, genome)\n        }\n\n        if (true === this.isUserDefined) {\n            this.color = config.color || ROI_USER_DEFINED_COLOR\n            this.headerColor = ROI_USER_HEADER_DEFINED_COLOR\n\n        } else {\n\n            this.color = config.color || ROI_DEFAULT_COLOR\n            this.headerColor = ROI_DEFAULT_HEADER_COLOR\n\n            // Use body color with alpha pinned to 1\n            // const [ r, g, b, discard ] = rgbaStringTokens(this.color)\n            // this.headerColor = `rgba(${ r },${ g },${ b },${ 1.0 })`\n\n        }\n    }\n\n    async getFeatures(chr, start, end) {\n        return this.featureSource.getFeatures({chr, start, end})\n    }\n\n    async getAllFeatures() {\n        return typeof this.featureSource.getAllFeatures === 'function' ? await this.featureSource.getAllFeatures() : {}\n    }\n\n    addFeature(feature) {\n        if (this.isUserDefined) {\n            this.featureSource.addFeature(feature)\n        } else {\n            console.error(\"Attempt to add ROI to non user-defined set\")\n        }\n    }\n\n    removeFeature(feature) {\n        if (this.isUserDefined) {\n            this.featureSource.removeFeature(feature)\n        } else {\n            console.error(\"Attempt to remove ROI from non user-defined set\")\n        }\n    }\n\n    toJSON() {\n        if (this.url) {\n            return {name: this.name, color: this.color, url: this.url, isUserDefined: this.isUserDefined}\n        } else {\n            const featureMap = this.featureSource.getAllFeatures()\n            const features = []\n            for (let chr of Object.keys(featureMap)) {\n                for (let f of featureMap[chr]) {\n                    features.push(f)\n                }\n            }\n            return {name: this.name, color: this.color, features: features, isUserDefined: this.isUserDefined}\n        }\n    }\n\n    dispose() {\n        for (let key of Object.keys(this)) {\n            this[key] = undefined\n        }\n    }\n\n}\n\nconst SCREEN_COORDS_WIDTH_THRESHOLD = 3\n\nfunction screenCoordinates(regionStartBP, regionEndBP, bpStart, bpp) {\n\n    let xStart = Math.round((regionStartBP - bpStart) / bpp)\n    const xEnd = Math.round((regionEndBP - bpStart) / bpp)\n\n    let width = xEnd - xStart\n\n    if (width < SCREEN_COORDS_WIDTH_THRESHOLD) {\n        width = SCREEN_COORDS_WIDTH_THRESHOLD\n        xStart -= 1\n    }\n\n    return {x: xStart, width}\n}\n\n\n/**\n * Special feature source that allows addition of features dynamically\n */\nclass DynamicFeatureSource {\n\n    constructor(features, genome) {\n        this.featureMap = {}\n        this.genome = genome\n\n        for (let feature of features) {\n\n            // Store as canonical chr name (i.e. translate aliases)\n            const chrKey = genome ? genome.getChromosomeName(feature.chr) : feature.chr\n\n            let featureList = this.featureMap[chrKey]\n            if (!featureList) {\n                featureList = []\n                this.featureMap[chrKey] = featureList\n            }\n            featureList.push(feature)\n        }\n\n        for (let key of Object.keys(this.featureMap)) {\n            this.featureMap[key].sort((a, b) => a.start - b.start)\n        }\n    }\n\n    getFeatures({chr, start, end}) {\n        if (chr.toLowerCase() === 'all') {\n            return computeWGFeatures(this.featureMap, this.genome)\n        } else {\n            // TODO -- this use of filter is O(N), and might not scale well for large feature lists.\n            const featureList = this.featureMap[chr]\n            return featureList ? featureList.filter(feature => feature.end > start && feature.start < end) : []\n        }\n    }\n\n    getAllFeatures() {\n        return this.featureMap\n    }\n\n    supportsWholeGenome() {\n        return true\n    }\n\n    addFeature(feature) {\n        let featureList = this.featureMap[feature.chr]\n        if (!featureList) {\n            featureList = []\n            this.featureMap[feature.chr] = featureList\n        }\n        featureList.push(feature)\n        featureList.sort((a, b) => a.start - b.start)\n    }\n\n    removeFeature({chr, start, end}) {\n\n        if (this.featureMap[chr]) {\n            const match = `${chr}-${start}-${end}`\n            this.featureMap[chr] = this.featureMap[chr].filter(feature => match !== `${feature.chr}-${feature.start}-${feature.end}`)\n        }\n    }\n}\n\n\nexport {ROI_DEFAULT_COLOR, ROI_USER_DEFINED_COLOR, screenCoordinates}\n\nexport default ROISet\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from \"../node_modules/igv-ui/dist/igv-ui.js\"\nimport {validateGenomicExtent} from \"./util/igvUtils.js\"\nimport GenomeUtils from './genome/genome.js'\nimport { ROI_USER_DEFINED_COLOR } from \"./roi/ROISet.js\"\n\nconst RULER_SWEEPER_COLOR = 'rgba(68, 134, 247, 0.25)'\n\nclass RulerSweeper {\n\n    constructor(rulerViewport, column, browser, referenceFrame) {\n\n        this.rulerViewport = rulerViewport\n\n        this.rulerSweeper = DOMUtils.div({class: 'igv-ruler-sweeper'})\n        column.appendChild(this.rulerSweeper)\n\n        this.browser = browser\n        this.referenceFrame = referenceFrame\n\n        this.isMouseHandlers = undefined\n\n        this.addBrowserObserver()\n    }\n\n    addBrowserObserver() {\n\n        const observerHandler = () => {\n            if (this.referenceFrame) {\n                GenomeUtils.isWholeGenomeView(this.referenceFrame.chr) ? this.removeMouseHandlers() : this.addMouseHandlers()\n            }\n        }\n\n        // Viewport Content\n        this.boundObserverHandler = observerHandler.bind(this)\n        this.browser.on('locuschange', this.boundObserverHandler)\n\n    }\n\n    removeBrowserObserver() {\n        this.browser.off('locuschange', this.boundObserverHandler)\n    }\n\n    addMouseHandlers() {\n\n        if (true === this.isMouseHandlers) {\n            return\n        }\n\n        const threshold = 1\n\n        let isMouseDown\n        let isMouseIn\n        let mouseDownX\n        let left\n        let width\n        let dx\n\n        // Viewport Content\n        this.boundContentMouseDownHandler = contentMouseDownHandler.bind(this)\n        this.rulerViewport.contentDiv.addEventListener('mousedown', this.boundContentMouseDownHandler)\n\n        function contentMouseDownHandler(event) {\n\n            isMouseDown = true\n            isMouseIn = true\n\n            const {x} = DOMUtils.translateMouseCoordinates(event, this.rulerViewport.contentDiv)\n            left = mouseDownX = x\n\n            width = threshold\n\n\n            this.rulerSweeper.style.display = 'block'\n            this.rulerSweeper.style.backgroundColor = true === event.shiftKey ? ROI_USER_DEFINED_COLOR : RULER_SWEEPER_COLOR\n\n            this.rulerSweeper.style.left = `${left}px`\n            this.rulerSweeper.style.width = `${width}px`\n\n        }\n\n        // Document\n        this.boundDocumentMouseMoveHandler = documentMouseMoveHandler.bind(this)\n        document.addEventListener('mousemove', this.boundDocumentMouseMoveHandler)\n\n        function documentMouseMoveHandler(event) {\n\n            let mouseCurrentX\n\n            if (isMouseDown && isMouseIn) {\n\n                const {x} = DOMUtils.translateMouseCoordinates(event, this.rulerViewport.contentDiv)\n                mouseCurrentX = Math.max(Math.min(x, this.rulerViewport.contentDiv.clientWidth), 0)\n\n                dx = mouseCurrentX - mouseDownX\n\n                width = Math.abs(dx)\n                this.rulerSweeper.style.width = `${width}px`\n\n                if (dx < 0) {\n                    left = mouseDownX + dx\n                    this.rulerSweeper.style.left = `${left}px`\n                }\n\n            }\n\n        }\n\n        this.boundDocumentMouseUpHandler = documentMouseUpHandler.bind(this)\n        document.addEventListener('mouseup', this.boundDocumentMouseUpHandler)\n\n        function documentMouseUpHandler(event) {\n\n            let genomicExtent\n\n            if (true === isMouseDown && true === isMouseIn) {\n\n                isMouseDown = isMouseIn = undefined\n\n                this.rulerSweeper.style.display = 'none'\n\n                if (width > threshold) {\n\n                    genomicExtent =\n                        {\n                            start: Math.floor(this.referenceFrame.calculateEnd(left)),\n                            end: Math.floor(this.referenceFrame.calculateEnd(left + width)),\n                        }\n\n\n                    const shiftKeyPressed = event.shiftKey\n\n                    if (true === shiftKeyPressed) {\n                        this.browser.roiManager.updateUserDefinedROISet(Object.assign({chr: this.referenceFrame.chr}, genomicExtent))\n                    } else {\n\n                        validateGenomicExtent(this.browser.genome.getChromosome(this.referenceFrame.chr).bpLength, genomicExtent, this.browser.minimumBases())\n                        updateReferenceFrame(this.referenceFrame, genomicExtent, this.rulerViewport.contentDiv.clientWidth)\n                        this.browser.updateViews(this.referenceFrame)\n\n                    }\n\n                }\n\n            }\n\n        }\n\n        this.isMouseHandlers = true\n    }\n\n    removeMouseHandlers() {\n        this.rulerViewport.contentDiv.removeEventListener('mousedown', this.boundContentMouseDownHandler)\n        document.removeEventListener('mousemove', this.boundDocumentMouseMoveHandler)\n        document.removeEventListener('mouseup', this.boundDocumentMouseUpHandler)\n        this.isMouseHandlers = false\n    }\n\n    dispose() {\n        this.removeBrowserObserver()\n        this.removeMouseHandlers()\n        this.rulerSweeper.remove()\n    }\n\n}\n\nfunction updateReferenceFrame(referenceFrame, genomicExtent, pixelWidth) {\n    referenceFrame.start = Math.round(genomicExtent.start)\n    referenceFrame.end = Math.round(genomicExtent.end)\n    referenceFrame.bpPerPixel = (referenceFrame.end - referenceFrame.start) / pixelWidth\n}\n\nexport default RulerSweeper\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\nclass PairedAlignment {\n\n    constructor(firstAlignment) {\n\n        this.paired = true\n        this.firstAlignment = firstAlignment\n        this.chr = firstAlignment.chr\n        this.readName = firstAlignment.readName\n\n        if (firstAlignment.start < firstAlignment.mate.position) {\n            this.start = firstAlignment.start\n            this.scStart = firstAlignment.scStart\n            this.connectingStart = firstAlignment.start + firstAlignment.lengthOnRef\n            this.connectingEnd = firstAlignment.mate.position\n        } else {\n            this.start = firstAlignment.mate.position\n            this.scStart = this.start\n            this.connectingStart = firstAlignment.mate.position\n            this.connectingEnd = firstAlignment.start\n        }\n\n        this.end = Math.max(firstAlignment.mate.position, firstAlignment.start + firstAlignment.lengthOnRef)  // Approximate\n        this.lengthOnRef = this.end - this.start\n\n        let scEnd = Math.max(this.end, firstAlignment.scStart + firstAlignment.scLengthOnRef)\n        this.scLengthOnRef = scEnd - this.scStart\n\n    }\n\n    setSecondAlignment(secondAlignment) {\n\n        // TODO -- check the chrs are equal,  error otherwise\n        this.secondAlignment = secondAlignment\n        const firstAlignment = this.firstAlignment\n\n        if (secondAlignment.start > firstAlignment.start) {\n            this.connectingEnd = secondAlignment.start\n        } else {\n            this.connectingStart = secondAlignment.start + secondAlignment.lengthOnRef\n        }\n\n        this.start = Math.min(firstAlignment.start, secondAlignment.start)\n        this.end = Math.max(firstAlignment.start + firstAlignment.lengthOnRef, secondAlignment.start + secondAlignment.lengthOnRef)\n        this.lengthOnRef = this.end - this.start\n\n        this.scStart = Math.min(firstAlignment.scStart, secondAlignment.scStart)\n        const scEnd = Math.max(firstAlignment.scStart + firstAlignment.scLengthOnRef, secondAlignment.scStart + secondAlignment.scLengthOnRef)\n        this.scLengthOnRef = scEnd - this.scStart\n\n    }\n\n    containsLocation(genomicLocation, showSoftClips) {\n        const s = showSoftClips ? this.scStart : this.start\n        const l = showSoftClips ? this.scLengthOnRef : this.lengthOnRef\n        return (genomicLocation >= s && genomicLocation <= (s + l))\n    }\n\n    alignmentContaining(genomicLocation, showSoftClips) {\n        if (this.firstAlignment.containsLocation(genomicLocation, showSoftClips)) {\n            return this.firstAlignment\n        } else if (this.secondAlignment && this.secondAlignment.containsLocation(genomicLocation, showSoftClips)) {\n            return this.secondAlignment\n        } else {\n            return undefined\n        }\n    }\n\n    popupData(genomicLocation) {\n\n        let nameValues = this.firstAlignment.popupData(genomicLocation)\n\n        if (this.secondAlignment) {\n            nameValues.push(\"-------------------------------\")\n            nameValues = nameValues.concat(this.secondAlignment.popupData(genomicLocation))\n        }\n        return nameValues\n    }\n\n    isPaired() {\n        return true // By definition\n    }\n\n    isMateMapped() {\n        return true // By definition\n    }\n\n    isProperPair() {\n        return this.firstAlignment.isProperPair()\n    }\n\n    get fragmentLength() {\n        return Math.abs(this.firstAlignment.fragmentLength)\n    }\n\n    firstOfPairStrand() {\n\n        if (this.firstAlignment.isFirstOfPair()) {\n            return this.firstAlignment.strand\n        } else if (this.secondAlignment && this.secondAlignment.isFirstOfPair()) {\n            return this.secondAlignment.strand\n        } else {\n            return this.firstAlignment.mate.strand    // Assumption is mate is first-of-pair\n        }\n    }\n\n    hasTag(str) {\n        return this.firstAlignment.hasTag(str) || (this.secondAlignment &&  this.secondAlignment.hasTag(str))\n    }\n}\n\nexport default PairedAlignment\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst isString = StringUtils.isString\nconst hashCode = StringUtils.hashCode\n\nclass BamAlignmentRow {\n\n    constructor() {\n\n        this.alignments = []\n        this.score = undefined\n    }\n\n    findAlignment(genomicLocation) {\n\n        const alignmentContains = (a, genomicLocation) => {\n            return genomicLocation >= a.start && genomicLocation < a.start + a.lengthOnRef\n        }\n\n        // find single alignment that overlaps sort location\n        let centerAlignment\n        for (let i = 0; i < this.alignments.length; i++) {\n            const a = this.alignments[i]\n            if (genomicLocation >= a.start && genomicLocation < a.start + a.lengthOnRef) {\n                if (a.paired) {\n                    if (a.firstAlignment && alignmentContains(a.firstAlignment, genomicLocation)) {\n                        centerAlignment = a.firstAlignment\n                    } else if (a.secondAlignment && alignmentContains(a.secondAlignment, genomicLocation)) {\n                        centerAlignment = a.secondAlignment\n                    }\n                } else {\n                    centerAlignment = a\n                }\n                break\n            }\n        }\n\n        return centerAlignment\n\n    }\n\n    getSortValue({position, option, tag}, alignmentContainer) {\n\n        if (!option) option = \"BASE\"\n\n        const alignment = this.findAlignment(position)\n        if (undefined === alignment) {  // This condition should never occur\n            return Number.MAX_VALUE\n        }\n\n        switch (option) {\n            case \"NUCLEOTIDE\":\n            case \"BASE\": {\n                return calculateBaseScore(alignment, alignmentContainer, position)\n            }\n            case \"STRAND\":\n                return alignment.strand ? 1 : -1\n            case \"START\":\n                return alignment.start\n            case \"TAG\": {\n                return alignment.tags()[tag]\n            }\n            case \"READ_NAME\":\n                return alignment.readName\n            case \"INSERT_SIZE\":\n                return -Math.abs(alignment.fragmentLength)\n            case \"GAP_SIZE\":\n                return -alignment.gapSizeAt(position)\n            case \"MATE_CHR\":\n                return alignment.mate\n            case \"MQ\":\n                return alignment.mq === undefined ? Number.MAX_VALUE : -alignment.mq\n            case \"ALIGNED_READ_LENGTH\":\n                return -alignment.lengthOnRef\n            default:\n                return Number.MAX_VALUE\n        }\n\n\n        function calculateBaseScore(alignment, alignmentContainer, genomicLocation) {\n\n            let reference\n            const idx = Math.floor(genomicLocation) - alignmentContainer.start\n            if (idx < alignmentContainer.sequence.length) {\n                reference = alignmentContainer.sequence.charAt(idx)\n            }\n            if (!reference) {\n                return 0\n            }\n            const base = alignment.readBaseAt(genomicLocation)\n            const quality = alignment.readBaseQualityAt(genomicLocation)\n\n            const coverageMap = alignmentContainer.coverageMap\n            const coverageMapIndex = Math.floor(genomicLocation - coverageMap.bpStart)\n            const coverage = coverageMap.coverage[coverageMapIndex]\n\n            // Insertions.  These are additive with base scores as they occur between bases, so you can have a\n            // base mismatch AND an insertion\n            let baseScore = 0\n            if (alignment.insertions) {\n                for (let ins of alignment.insertions) {\n                    if (ins.start === genomicLocation) {\n                        baseScore = -coverage.ins\n                    }\n                }\n            }\n\n\n            if (!base) {\n                // Either deletion or skipped (splice junction)\n                const delCount = coverage.del\n                if (delCount > 0) {\n                    baseScore -= delCount\n                } else if (baseScore === 0) {    // Don't modify insertion score, if any\n                    baseScore = 1\n                }\n            } else {\n                reference = reference.toUpperCase()\n                if ('N' === base && baseScore === 0) {\n                    baseScore = 2\n                } else if ((reference === base || '=' === base) && baseScore === 0) {\n                    baseScore = 4 - quality / 1000\n                } else if (\"X\" === base || reference !== base) {\n                    const count = coverage[\"pos\" + base] + coverage[\"neg\" + base]\n                    baseScore -= (count + (quality / 1000))\n                }\n            }\n\n\n            return baseScore\n        }\n    }\n\n\n}\n\nexport default BamAlignmentRow\n","import PairedAlignment from \"./pairedAlignment.js\"\nimport BamAlignmentRow from \"./bamAlignmentRow.js\"\n\nconst alignmentSpace = 2\n\nfunction canBePaired(alignment) {\n    return alignment.isPaired() &&\n        alignment.mate &&\n        alignment.isMateMapped() &&\n        alignment.chr === alignment.mate.chr &&\n        (alignment.isFirstOfPair() || alignment.isSecondOfPair()) && !(alignment.isSecondary() || alignment.isSupplementary())\n}\n\n\nfunction pairAlignments(rows) {\n\n    const pairCache = {}\n    const result = []\n\n    for (let row of rows) {\n        for (let alignment of row.alignments) {\n            if (canBePaired(alignment)) {\n                let pairedAlignment = pairCache[alignment.readName]\n                if (pairedAlignment) {\n                    pairedAlignment.setSecondAlignment(alignment)\n                    pairCache[alignment.readName] = undefined   // Don't need to track this anymore.\n                } else {\n                    pairedAlignment = new PairedAlignment(alignment)\n                    pairCache[alignment.readName] = pairedAlignment\n                    result.push(pairedAlignment)\n                }\n            } else {\n                result.push(alignment)\n            }\n        }\n    }\n    return result\n}\n\nfunction unpairAlignments(rows) {\n    const result = []\n    for (let row of rows) {\n        for (let alignment of row.alignments) {\n            if (alignment instanceof PairedAlignment) {\n                if (alignment.firstAlignment) result.push(alignment.firstAlignment)  // shouldn't need the null test\n                if (alignment.secondAlignment) result.push(alignment.secondAlignment)\n            } else {\n                result.push(alignment)\n            }\n        }\n    }\n    return result\n}\n\nfunction packAlignmentRows(alignments, start, end, showSoftClips) {\n\n    //console.log(`packAlignmentRows ${start} ${end}`)\n    //const t0 = Date.now()\n\n    if (!alignments) {\n        return undefined\n    } else if (alignments.length === 0) {\n        return []\n    } else {\n        alignments.sort(function (a, b) {\n            return showSoftClips ? a.scStart - b.scStart : a.start - b.start\n        })\n\n        const packedAlignmentRows = []\n        let alignmentRow\n        let nextStart = 0\n        let nextIDX = 0\n        const allocated = new Set()\n        const startNewRow = () => {\n            alignmentRow = new BamAlignmentRow()\n            packedAlignmentRows.push(alignmentRow)\n            nextStart = 0\n            nextIDX = 0\n            allocated.clear()\n        }\n        startNewRow()\n\n        while (alignments.length > 0) {\n            if (nextIDX >= 0 && nextIDX < alignments.length) {\n                const alignment = alignments[nextIDX]\n                allocated.add(alignment)\n                alignmentRow.alignments.push(alignment)\n                nextStart = showSoftClips ?\n                    alignment.scStart + alignment.scLengthOnRef + alignmentSpace :\n                    alignment.start + alignment.lengthOnRef + alignmentSpace\n                nextIDX = binarySearch(alignments, (a) => (showSoftClips ? a.scStart : a.start) > nextStart, nextIDX)\n            } else {\n                // Remove allocated alignments and start new row\n                alignments = alignments.filter(a => !allocated.has(a))\n                startNewRow()\n            }\n        }\n        //console.log(`Done in ${Date.now() - t0} ms`)\n        return packedAlignmentRows\n    }\n}\n\n\n/**\n * Return 0 <= i <= array.length such that !pred(array[i - 1]) && pred(array[i]).\n *\n * returns an index 0 ≤ i ≤ array.length such that the given predicate is false for array[i - 1] and true for array[i]* *\n */\nfunction binarySearch(array, pred, min) {\n    let lo = min - 1, hi = array.length\n    while (1 + lo < hi) {\n        const mi = lo + ((hi - lo) >> 1)\n        if (pred(array[mi])) {\n            hi = mi\n        } else {\n            lo = mi\n        }\n    }\n    return hi\n}\n\n\nexport {canBePaired, pairAlignments, unpairAlignments, packAlignmentRows}","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\nimport PairedAlignment from \"./pairedAlignment.js\"\nimport {canBePaired, packAlignmentRows, pairAlignments, unpairAlignments} from \"./alignmentUtils.js\"\nimport {IGVMath} from \"../../node_modules/igv-utils/src/index.js\"\n\n\nclass AlignmentContainer {\n\n    //            this.config.samplingWindowSize, this.config.samplingDepth,\n    //             this.config.pairsSupported, this.config.alleleFreqThreshold)\n    constructor(chr, start, end, {samplingWindowSize, samplingDepth, pairsSupported, alleleFreqThreshold}) {\n\n        this.chr = chr\n        this.start = Math.floor(start)\n        this.end = Math.ceil(end)\n        this.length = (end - start)\n\n        this.alleleFreqThreshold = alleleFreqThreshold === undefined ? 0.2 : alleleFreqThreshold\n\n        this.coverageMap = new CoverageMap(chr, start, end, this.alleleFreqThreshold)\n        this.alignments = []\n        this.downsampledIntervals = []\n\n        this.samplingWindowSize = samplingWindowSize === undefined ? 100 : samplingWindowSize\n        this.samplingDepth = samplingDepth === undefined ? 1000 : samplingDepth\n\n        this.pairsSupported = pairsSupported === undefined ? true : pairsSupported\n        this.paired = false  // false until proven otherwise\n        this.pairsCache = {}  // working cache of paired alignments by read name\n\n        this.downsampledReads = new Set()\n\n        this.currentBucket = new DownsampleBucket(this.start, this.start + this.samplingWindowSize, this)\n\n        this.filter = function filter(alignment) {         // TODO -- pass this in\n            return alignment.isMapped() && !alignment.isFailsVendorQualityCheck()\n        }\n\n    }\n\n    push(alignment) {\n\n        if (this.filter(alignment) === false) return\n\n        this.coverageMap.incCounts(alignment)   // Count coverage before any downsampling\n\n        if (this.pairsSupported && this.downsampledReads.has(alignment.readName)) {\n            return   // Mate already downsampled -- pairs are treated as a single alignment for downsampling\n        }\n\n        if (alignment.start >= this.currentBucket.end) {\n            this.finishBucket()\n            this.currentBucket = new DownsampleBucket(alignment.start, alignment.start + this.samplingWindowSize, this)\n        }\n\n        this.currentBucket.addAlignment(alignment)\n\n    }\n\n    forEach(callback) {\n        this.alignments.forEach(callback)\n    }\n\n    finish() {\n\n        if (this.currentBucket !== undefined) {\n            this.finishBucket()\n        }\n\n        this.alignments.sort(function (a, b) {\n            return a.start - b.start\n        })\n\n        this.pairsCache = undefined\n        this.downsampledReads = undefined\n    }\n\n    contains(chr, start, end) {\n        return this.chr === chr &&\n            this.start <= start &&\n            this.end >= end\n    }\n\n    hasDownsampledIntervals() {\n        return this.downsampledIntervals && this.downsampledIntervals.length > 0\n    }\n\n    finishBucket() {\n        this.alignments = this.alignments.concat(this.currentBucket.alignments)\n        if (this.currentBucket.downsampledCount > 0) {\n            this.downsampledIntervals.push(new DownsampledInterval(\n                this.currentBucket.start,\n                this.currentBucket.end,\n                this.currentBucket.downsampledCount))\n        }\n        this.paired = this.paired || this.currentBucket.paired\n    }\n\n    setViewAsPairs(bool) {\n        let alignments\n        if (bool) {\n            alignments = pairAlignments(this.packedAlignmentRows)\n        } else {\n            alignments = unpairAlignments(this.packedAlignmentRows)\n        }\n        this.packedAlignmentRows = packAlignmentRows(alignments, this.start, this.end)\n    }\n\n    setShowSoftClips(bool) {\n        const alignments = this.allAlignments()\n        this.packedAlignmentRows = packAlignmentRows(alignments, this.start, this.end, bool)\n    }\n\n    repack(bpPerPixel, showSoftClips) {\n        const alignments = this.allAlignments()\n        this.packedAlignmentRows = packAlignmentRows(alignments, this.start, this.end, showSoftClips, bpPerPixel)\n\n    }\n\n    allAlignments() {\n        const alignments = []\n        for (let row of this.packedAlignmentRows) {\n            for (let alignment of row.alignments) {\n                alignments.push(alignment)\n            }\n        }\n        return alignments\n    }\n\n    getMax(start, end) {\n        return this.coverageMap.getMax(start, end)\n    }\n\n    sortRows(options) {\n\n        const newRows = []\n        const undefinedRow = []\n        for (let row of this.packedAlignmentRows) {\n            const alignment = row.findAlignment(options.position)\n            if (undefined !== alignment) {\n                newRows.push(row)\n            } else {\n                undefinedRow.push(row)\n            }\n        }\n\n        newRows.sort((rowA, rowB) => {\n            const direction = options.direction\n            const rowAValue = rowA.getSortValue(options, this)\n            const rowBValue = rowB.getSortValue(options, this)\n\n            if (rowBValue === undefined && rowBValue !== undefined) return 1\n            else if (rowAValue !== undefined && rowBValue === undefined) return -1\n\n            const i = rowAValue > rowBValue ? 1 : (rowAValue < rowBValue ? -1 : 0)\n            return true === direction ? i : -i\n        })\n\n        for (let row of undefinedRow) {\n            newRows.push(row)\n        }\n\n        this.packedAlignmentRows = newRows\n    }\n\n}\n\n\nclass DownsampleBucket {\n\n    constructor(start, end, alignmentContainer) {\n\n        this.start = start\n        this.end = end\n        this.alignments = []\n        this.downsampledCount = 0\n        this.samplingDepth = alignmentContainer.samplingDepth\n        this.pairsSupported = alignmentContainer.pairsSupported\n        this.downsampledReads = alignmentContainer.downsampledReads\n        this.pairsCache = alignmentContainer.pairsCache\n    }\n\n    addAlignment(alignment) {\n\n        var idx, replacedAlignment, pairedAlignment\n\n        if (this.pairsSupported && canBePaired(alignment)) {\n            pairedAlignment = this.pairsCache[alignment.readName]\n            if (pairedAlignment) {\n                // Not subject to downsampling, just update the existing alignment\n                pairedAlignment.setSecondAlignment(alignment)\n                this.pairsCache[alignment.readName] = undefined   // Don't need to track this anymore. NOTE: Don't \"delete\", causes runtime performance issues\n                return\n            }\n        }\n\n        if (this.alignments.length < this.samplingDepth) {\n\n            if (this.pairsSupported && canBePaired(alignment)) {\n\n                // First alignment in a pair\n                pairedAlignment = new PairedAlignment(alignment)\n                this.paired = true\n                this.pairsCache[alignment.readName] = pairedAlignment\n                this.alignments.push(pairedAlignment)\n\n            } else {\n                this.alignments.push(alignment)\n            }\n\n        } else {\n\n            idx = Math.floor(Math.random() * (this.samplingDepth + this.downsampledCount - 1))\n\n            if (idx < this.samplingDepth) {\n\n                // Keep the new item\n                //  idx = Math.floor(Math.random() * (this.alignments.length - 1));\n                replacedAlignment = this.alignments[idx]   // To be replaced\n\n                if (this.pairsSupported && canBePaired(alignment)) {\n\n                    if (this.pairsCache[replacedAlignment.readName] !== undefined) {\n                        this.pairsCache[replacedAlignment.readName] = undefined\n                    }\n\n                    pairedAlignment = new PairedAlignment(alignment)\n                    this.paired = true\n                    this.pairsCache[alignment.readName] = pairedAlignment\n                    this.alignments[idx] = pairedAlignment\n\n                } else {\n                    this.alignments[idx] = alignment\n                }\n                this.downsampledReads.add(replacedAlignment.readName)\n\n            } else {\n                this.downsampledReads.add(alignment.readName)\n            }\n\n            this.downsampledCount++\n        }\n\n\n    }\n}\n\nclass CoverageMap {\n\n    constructor(chr, start, end, alleleFreqThreshold) {\n\n        this.chr = chr\n        this.bpStart = start\n        this.length = (end - start)\n\n        this.coverage = new Array(this.length)\n        this.maximum = 0\n\n        this.threshold = alleleFreqThreshold\n        this.qualityWeight = true\n    }\n\n    /**\n     * Return the maximum coverage value between start and end.  This is used for autoscaling.\n     * @param start\n     * @param end\n     */\n    getMax(start, end) {\n        let max = 0\n        const len = this.coverage.length\n        for (let i = 0; i < len; i++) {\n            const pos = this.bpStart + i\n            if (pos > end) break\n            const cov = this.coverage[i]\n            if (pos >= start && cov) {\n                max = Math.max(max, cov.total)\n            }\n        }\n        return max\n    }\n\n    incCounts(alignment) {\n\n        var self = this\n\n        if (alignment.blocks === undefined) {\n            incBlockCount(alignment)\n        } else {\n            alignment.blocks.forEach(function (block) {\n                incBlockCount(block)\n            })\n        }\n\n        if (alignment.gaps) {\n            for (let del of alignment.gaps) {\n                if (del.type === 'D') {\n                    const offset = del.start - self.bpStart\n                    for (let i = offset; i < offset + del.len; i++) {\n                        if (i < 0) continue\n                        if (!this.coverage[i]) {\n                            this.coverage[i] = new Coverage(self.threshold)\n                        }\n                        this.coverage[i].del++\n                    }\n                }\n            }\n        }\n\n        if (alignment.insertions) {\n            for (let del of alignment.insertions) {\n                const i = del.start - this.bpStart\n                if (i < 0) continue\n                if (!this.coverage[i]) {\n                    this.coverage[i] = new Coverage(self.threshold)\n                }\n                this.coverage[i].ins++\n            }\n        }\n\n        function incBlockCount(block) {\n\n            if ('S' === block.type) return\n\n            const seq = alignment.seq\n            const qual = alignment.qual\n            const seqOffset = block.seqOffset\n\n            for (let i = block.start - self.bpStart, j = 0; j < block.len; i++, j++) {\n\n                if (!self.coverage[i]) {\n                    self.coverage[i] = new Coverage(self.threshold)\n                }\n\n                const base = (seq == undefined) ? \"N\" : seq.charAt(seqOffset + j)\n                const key = (alignment.strand) ? \"pos\" + base : \"neg\" + base\n                const q = qual && seqOffset + j < qual.length ? qual[seqOffset + j] : 30\n\n                self.coverage[i][key] += 1\n                self.coverage[i][\"qual\" + base] += q\n\n                self.coverage[i].total += 1\n                self.coverage[i].qual += q\n\n                self.maximum = Math.max(self.coverage[i].total, self.maximum)\n\n            }\n        }\n    }\n}\n\n\nclass Coverage {\n\n    constructor(alleleThreshold) {\n\n        this.qualityWeight = true\n\n        this.posA = 0\n        this.negA = 0\n\n        this.posT = 0\n        this.negT = 0\n\n        this.posC = 0\n        this.negC = 0\n        this.posG = 0\n\n        this.negG = 0\n\n        this.posN = 0\n        this.negN = 0\n\n        this.pos = 0\n        this.neg = 0\n\n        this.qualA = 0\n        this.qualT = 0\n        this.qualC = 0\n        this.qualG = 0\n        this.qualN = 0\n\n        this.qual = 0\n\n        this.total = 0\n        this.del = 0\n        this.ins = 0\n\n        this.threshold = alleleThreshold\n    }\n\n    hoverText() {\n        const pos = this.posA + this.posT + this.posC + this.posG + this.posN\n        const neg = this.negA + this.negT + this.negC + this.negG + this.negN\n        return `${this.total} (${pos}+, ${neg}-)`\n    }\n\n    isMismatch(refBase) {\n        const threshold = this.threshold * ((this.qualityWeight && this.qual) ? this.qual : this.total)\n        let mismatchQualitySum = 0\n        for (let base of [\"A\", \"T\", \"C\", \"G\"]) {\n            if (base !== refBase) {\n                mismatchQualitySum += ((this.qualityWeight && this.qual) ? this[\"qual\" + base] : (this[\"pos\" + base] + this[\"neg\" + base]))\n            }\n        }\n        return mismatchQualitySum >= threshold\n    }\n}\n\nclass DownsampledInterval {\n\n    constructor(start, end, counts) {\n        this.start = start\n        this.end = end\n        this.counts = counts\n    }\n\n    popupData(genomicLocation) {\n        return [\n            {name: \"start\", value: this.start + 1},\n            {name: \"end\", value: this.end},\n            {name: \"# downsampled:\", value: this.counts}]\n    }\n}\n\nexport default AlignmentContainer\n","import {numberFormatter} from \"../../node_modules/igv-utils/src/stringUtils.js\"\nimport BamUtils from \"./bamUtils.js\"\n\nclass SupplementaryAlignment {\n\n    constructor(rec) {\n        const tokens = rec.split(',')\n        this.chr = tokens[0]\n        this.start = parseInt(tokens[1])\n        this.strand = tokens[2].charAt(0)\n        this.mapQ = parseInt(tokens[4])\n        this.numMismatches = parseInt(tokens[5])\n        this.lenOnRef = BamUtils.computeLengthOnReference(tokens[3])\n    }\n\n    printString() {\n        return this.chr + \":\" + numberFormatter(this.start) + \"-\" + numberFormatter(this.start + this.lenOnRef)\n            + \" (\" + this.strand + \") = \" + numberFormatter(this.lenOnRef) + \"bp @MAPQ: \" + this.mapQ + \" NM: \" + this.numMismatches\n    }\n}\n\nfunction createSupplementaryAlignments(str) {\n    const tokens = str.split(';')\n    return tokens.filter(t => t.length > 0).map(str => new SupplementaryAlignment(str))\n}\n\n\nexport {createSupplementaryAlignments}","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\nimport {StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport {createSupplementaryAlignments} from \"./supplementaryAlignment.js\"\n\nconst READ_PAIRED_FLAG = 0x1\nconst PROPER_PAIR_FLAG = 0x2\nconst READ_UNMAPPED_FLAG = 0x4\nconst MATE_UNMAPPED_FLAG = 0x8\nconst READ_STRAND_FLAG = 0x10\nconst MATE_STRAND_FLAG = 0x20\nconst FIRST_OF_PAIR_FLAG = 0x40\nconst SECOND_OF_PAIR_FLAG = 0x80\nconst SECONDARY_ALIGNMNET_FLAG = 0x100\nconst READ_FAILS_VENDOR_QUALITY_CHECK_FLAG = 0x200\nconst DUPLICATE_READ_FLAG = 0x400\nconst SUPPLEMENTARY_ALIGNMENT_FLAG = 0x800\nconst ELEMENT_SIZE = {\n    c: 1,\n    C: 1,\n    s: 2,\n    S: 2,\n    i: 4,\n    I: 4,\n    f: 4\n}\n\nconst MAX_CIGAR = 50\n\n/**\n * readName\n * chr\n * cigar\n * lengthOnRef\n * start\n * seq\n * qual\n * mq\n * strand\n * blocks\n */\n\nclass BamAlignment {\n\n    constructor() {\n        this.hidden = false\n    }\n\n    isMapped() {\n        return (this.flags & READ_UNMAPPED_FLAG) === 0\n    }\n\n    isPaired() {\n        return (this.flags & READ_PAIRED_FLAG) !== 0\n    }\n\n    isProperPair() {\n        return (this.flags & PROPER_PAIR_FLAG) !== 0\n    }\n\n    isFirstOfPair() {\n        return (this.flags & FIRST_OF_PAIR_FLAG) !== 0\n    }\n\n    isSecondOfPair() {\n        return (this.flags & SECOND_OF_PAIR_FLAG) !== 0\n    }\n\n    isSecondary() {\n        return (this.flags & SECONDARY_ALIGNMNET_FLAG) !== 0\n    }\n\n    isSupplementary() {\n        return (this.flags & SUPPLEMENTARY_ALIGNMENT_FLAG) !== 0\n    }\n\n    isFailsVendorQualityCheck() {\n        return (this.flags & READ_FAILS_VENDOR_QUALITY_CHECK_FLAG) !== 0\n    }\n\n    isDuplicate() {\n        return (this.flags & DUPLICATE_READ_FLAG) !== 0\n    }\n\n    isMateMapped() {\n        return (this.flags & MATE_UNMAPPED_FLAG) === 0\n    }\n\n    isNegativeStrand() {\n        return (this.flags & READ_STRAND_FLAG) !== 0\n    }\n\n    isMateNegativeStrand() {\n        return (this.flags & MATE_STRAND_FLAG) !== 0\n    }\n\n    hasTag(tag) {\n        const tmpTags = this.tagDict || decodeTags(this.tagBA)\n        return tmpTags.hasOwnProperty(tag)\n    }\n\n    tags() {\n        if (!this.tagDict) {\n            if (this.tagBA) {\n                this.tagDict = decodeTags(this.tagBA)\n                this.tagBA = undefined\n            } else {\n                this.tagDict = {}  // Mark so we don't try again.  The record has no tags\n            }\n        }\n        return this.tagDict\n    }\n\n    /**\n     * Does alignment (or alignment extended by soft clips) contain the genomic location?\n     *\n     * @param genomicLocation\n     * @param showSoftClips\n     * @returns {boolean|boolean}\n     */\n    containsLocation(genomicLocation, showSoftClips) {\n        const s = showSoftClips ? this.scStart : this.start\n        const l = showSoftClips ? this.scLengthOnRef : this.lengthOnRef\n        return (genomicLocation >= s && genomicLocation <= (s + l))\n    }\n\n    popupData(genomicLocation) {\n\n        // if the user clicks on a base next to an insertion, show just the\n        // inserted bases in a popup (like in desktop IGV).\n        const nameValues = []\n\n        // Consert genomic location to int\n        genomicLocation = Math.floor(genomicLocation)\n\n        if (this.insertions) {\n\n            const seq = this.seq\n\n            for (let insertion of this.insertions) {\n                var ins_start = insertion.start\n                if (genomicLocation === ins_start || genomicLocation === ins_start - 1) {\n                    nameValues.push({name: 'Insertion', value: seq.substr(insertion.seqOffset, insertion.len)})\n                    nameValues.push({name: 'Location', value: ins_start})\n                    return nameValues\n                }\n            }\n        }\n\n        nameValues.push({name: 'Read Name', value: this.readName})\n\n        // Sample\n        // Read group\n        nameValues.push('<hr/>')\n\n        // Add 1 to genomic location to map from 0-based computer units to user-based units\n        nameValues.push({name: 'Alignment Start', value: StringUtils.numberFormatter(1 + this.start), borderTop: true})\n        nameValues.push({name: 'Read Strand', value: (true === this.strand ? '(+)' : '(-)'), borderTop: true})\n\n        // Abbreviate long cigar strings, keeping the beginning and end to show cliping\n        let cigar = this.cigar\n        if (cigar && cigar.length > MAX_CIGAR) {\n            const half = MAX_CIGAR / 2\n            cigar = `${cigar.substring(0, half - 2)} ... ${cigar.substring(cigar.length - half + 2)}`\n        }\n        nameValues.push({name: 'Cigar', value: cigar})\n\n        nameValues.push({name: 'Mapping Quality', value: this.mq})\n        nameValues.push({name: 'Secondary', value: yesNo(this.isSecondary())})\n        nameValues.push({name: 'Supplementary', value: yesNo(this.isSupplementary())})\n        nameValues.push({name: 'Duplicate', value: yesNo(this.isDuplicate())})\n        nameValues.push({name: 'Failed QC', value: yesNo(this.isFailsVendorQualityCheck())})\n\n        if (this.isPaired()) {\n            nameValues.push('<hr/>')\n            nameValues.push({name: 'First in Pair', value: !this.isSecondOfPair(), borderTop: true})\n            nameValues.push({name: 'Mate is Mapped', value: yesNo(this.isMateMapped())})\n            if (this.pairOrientation) {\n                nameValues.push({name: 'Pair Orientation', value: this.pairOrientation})\n            }\n            if (this.isMateMapped()) {\n                nameValues.push({name: 'Mate Chromosome', value: this.mate.chr})\n                nameValues.push({name: 'Mate Start', value: (this.mate.position + 1)})\n                nameValues.push({name: 'Mate Strand', value: (true === this.mate.strand ? '(+)' : '(-)')})\n                nameValues.push({name: 'Insert Size', value: this.fragmentLength})\n                // Mate Start\n                // Mate Strand\n                // Insert Size\n            }\n            // First in Pair\n            // Pair Orientation\n\n        }\n\n        const tagDict = this.tags()\n\n        if (tagDict.hasOwnProperty('SA')) {\n            nameValues.push('<hr/>')\n            nameValues.push({name: 'Supplementary Alignments', value: ''})\n            const sa = createSupplementaryAlignments(tagDict['SA'])\n            if (sa) {\n                nameValues.push('<ul>')\n                for (let s of sa) {\n                    nameValues.push(`<li>${s.printString()}</li>`)\n                }\n                nameValues.push('</ul>')\n            }\n        }\n\n        const hiddenTags = new Set(['SA', 'MD'])\n        nameValues.push('<hr/>')\n        for (let key in tagDict) {\n            if (!hiddenTags.has(key)) {\n                nameValues.push({name: key, value: tagDict[key]})\n            }\n        }\n\n        nameValues.push({name: 'Hidden Tags', value: 'SA, MD'})\n\n        nameValues.push('<hr/>')\n        nameValues.push({name: 'Genomic Location: ', value: StringUtils.numberFormatter(1 + genomicLocation)})\n        nameValues.push({name: 'Read Base:', value: this.readBaseAt(genomicLocation)})\n        nameValues.push({name: 'Base Quality:', value: this.readBaseQualityAt(genomicLocation)})\n\n        return nameValues\n\n\n        function yesNo(bool) {\n            return bool ? 'Yes' : 'No'\n        }\n    }\n\n    readBaseAt(genomicLocation) {\n\n        const block = blockAtGenomicLocation(this.blocks, genomicLocation)\n        if (block) {\n            if (\"*\" === this.seq) {\n                return \"*\"\n            } else {\n                const idx = block.seqIndexAt(genomicLocation)\n                // if (idx >= 0 && idx < this.seq.length) {\n                return this.seq[idx]\n                //  }\n            }\n        } else {\n            return undefined\n        }\n    }\n\n    readBaseQualityAt(genomicLocation) {\n\n        const block = blockAtGenomicLocation(this.blocks, genomicLocation)\n        if (block) {\n            if (\"*\" === this.qual) {\n                return 30\n            } else {\n                const idx = block.seqIndexAt(genomicLocation)\n                if (idx >= 0 && this.qual && idx < this.qual.length) {\n                    return this.qual[idx]\n                } else {\n                    return 30\n                }\n            }\n        } else {\n            return undefined\n        }\n    }\n\n    gapSizeAt(genomicLocation) {\n        if (this.gaps) {\n            for (let gap of this.gaps) {\n                if (genomicLocation >= gap.start && genomicLocation < gap.start + gap.len) {\n                    return gap.len\n                }\n            }\n        }\n        return 0\n    }\n\n    /**\n     * Return soft clipped blocks, if they exist, keyed by alignment end (left or right)\n     */\n    softClippedBlocks() {\n        let left\n        let right\n        let interiorSeen\n        for(let b of this.blocks) {\n            if('S' === b.type) {\n                if(interiorSeen) {\n                    right = b\n                } else {\n                    left = b\n                }\n            } else if('H' !== b.type) {\n                interiorSeen = true\n            }\n        }\n        return {left, right}\n    }\n\n}\n\nfunction blockAtGenomicLocation(blocks, genomicLocation) {\n\n    for (let i = 0; i < blocks.length; i++) {\n        const block = blocks[i]\n        if (genomicLocation >= block.start && genomicLocation < block.start + block.len) {\n            return block\n        }\n    }\n    return undefined\n}\n\nfunction decodeTags(ba) {\n\n    let p = 0\n    const len = ba.length\n    const tags = {}\n\n    while (p < len) {\n        const tag = String.fromCharCode(ba[p]) + String.fromCharCode(ba[p + 1])\n        p += 2\n\n        const type = String.fromCharCode(ba[p++])\n        let value\n        if (type === 'A') {\n            value = String.fromCharCode(ba[p])\n            p++\n        } else if (type === 'i' || type === 'I') {\n            value = readInt(ba, p)\n            p += 4\n        } else if (type === 'c') {\n            value = readInt8(ba, p)\n            p++\n        } else if (type === 'C') {\n            value = readUInt8(ba, p)\n            p++\n        } else if (type === 's' || type === 'S') {\n            value = readShort(ba, p)\n            p += 2\n        } else if (type === 'f') {\n            value = readFloat(ba, p)\n            p += 4\n        } else if (type === 'Z') {\n            value = ''\n            for (; ;) {\n                var cc = ba[p++]\n                if (cc === 0) {\n                    break\n                } else {\n                    value += String.fromCharCode(cc)\n                }\n            }\n        } else if (type === 'B') {\n            const elementType = String.fromCharCode(ba[p++])\n            let elementSize = ELEMENT_SIZE[elementType]\n            if (elementSize === undefined) {\n                tags[tag] = `Error: unknown element type '${elementType}'`\n                break\n            }\n            const numElements = readInt(ba, p)\n            p += (4 + numElements * elementSize)\n            value = '[not shown]'\n        } else {\n            //'Unknown type ' + type;\n            value = 'Error unknown type: ' + type\n            tags[tag] = value\n            break\n        }\n        tags[tag] = value\n    }\n    return tags\n}\n\n\nfunction readInt(ba, offset) {\n    return (ba[offset + 3] << 24) | (ba[offset + 2] << 16) | (ba[offset + 1] << 8) | (ba[offset])\n}\n\nfunction readShort(ba, offset) {\n    return (ba[offset + 1] << 8) | (ba[offset])\n}\n\nfunction readFloat(ba, offset) {\n    const dataView = new DataView(ba.buffer)\n    return dataView.getFloat32(offset)\n}\n\nfunction readInt8(ba, offset) {\n    const dataView = new DataView(ba.buffer)\n    return dataView.getInt8(offset)\n}\n\nfunction readUInt8(ba, offset) {\n    const dataView = new DataView(ba.buffer)\n    return dataView.getUint8(offset)\n}\n\n\nexport default BamAlignment\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Created by jrobinso on 4/5/18.\n */\n\n\nclass AlignmentBlock {\n    constructor(b) {\n        if (b) {\n            Object.assign(this, b)\n        }\n    }\n\n    seqIndexAt(genomicLocation) {\n        return Math.floor(genomicLocation) - this.start + this.seqOffset\n    }\n}\n\nexport default AlignmentBlock\n","class BamFilter {\n    constructor(options) {\n        if (!options) options = {}\n        this.vendorFailed = options.vendorFailed === undefined ? true : options.vendorFailed\n        this.duplicates = options.duplicates === undefined ? true : options.duplicates\n        this.secondary = options.secondary || false\n        this.supplementary = options.supplementary || false\n        this.mqThreshold = options.mqThreshold === undefined ? 0 : options.mqThreshold\n        if (options.readgroups) {\n            this.readgroups = new Set(options.readgroups)\n        }\n    }\n\n    pass(alignment) {\n        if (this.vendorFailed && alignment.isFailsVendorQualityCheck()) return false\n        if (this.duplicates && alignment.isDuplicate()) return false\n        if (this.secondary && alignment.isSecondary()) return false\n        if (this.supplementary && alignment.isSupplementary()) return false\n        if (alignment.mq < this.mqThreshold) return false\n        if (this.readgroups) {\n            var rg = alignment.tags()['RG']\n            return this.readgroups.has(rg)\n        }\n        return true\n    }\n}\n\nexport default BamFilter\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport BamAlignment from \"./bamAlignment.js\"\nimport AlignmentBlock from \"./alignmentBlock.js\"\nimport {BGZip, igvxhr, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport BamFilter from \"./bamFilter.js\"\n\n\n/**\n * This code is based on the Biodalliance BAM reader by Thomas Down,  2011\n *\n * https://github.com/dasmoth/dalliance/blob/master/js/bam.js\n */\n\nconst SEQ_DECODER = ['=', 'A', 'C', 'x', 'G', 'x', 'x', 'x', 'T', 'x', 'x', 'x', 'x', 'x', 'x', 'N']\nconst CIGAR_DECODER = ['M', 'I', 'D', 'N', 'S', 'H', 'P', '=', 'X', '?', '?', '?', '?', '?', '?', '?']\nconst READ_STRAND_FLAG = 0x10\nconst MATE_STRAND_FLAG = 0x20\n\nconst BAM1_MAGIC_BYTES = new Uint8Array([0x42, 0x41, 0x4d, 0x01]) // BAM\\1\nconst BAM1_MAGIC_NUMBER = readInt(BAM1_MAGIC_BYTES, 0)\n\nconst DEFAULT_ALLELE_FREQ_THRESHOLD = 0.2\nconst DEFAULT_SAMPLING_WINDOW_SIZE = 100\nconst DEFAULT_SAMPLING_DEPTH = 500\nconst MAXIMUM_SAMPLING_DEPTH = 10000\n\nconst BamUtils = {\n\n    readHeader: function (url, options, genome) {\n\n        return igvxhr.loadArrayBuffer(url, options)\n\n            .then(function (compressedBuffer) {\n\n                var header, unc, uncba\n\n                unc = BGZip.unbgzf(compressedBuffer)\n                uncba = unc\n\n                header = BamUtils.decodeBamHeader(uncba, genome)\n\n                return header\n\n            })\n\n    },\n\n    /**\n     *\n     * @param ba  bytes to decode as a UInt8Array\n     * @param genome  optional igv genome object\n     * @returns {{ magicNumer: number, size: number, chrNames: Array, chrToIndex: ({}|*), chrAliasTable: ({}|*) }}\n     */\n    decodeBamHeader: function (ba, genome) {\n\n        var magic, samHeaderLen, samHeader, chrToIndex, chrNames, chrAliasTable, alias\n\n        magic = readInt(ba, 0)\n        if (magic !== BAM1_MAGIC_NUMBER) {\n            throw new Error('BAM header errror: bad magic number.  This could be caused by either a corrupt or missing file.')\n        }\n\n        samHeaderLen = readInt(ba, 4)\n        samHeader = ''\n\n        for (var i = 0; i < samHeaderLen; ++i) {\n            samHeader += String.fromCharCode(ba[i + 8])\n        }\n\n        var nRef = readInt(ba, samHeaderLen + 8)\n        var p = samHeaderLen + 12\n\n        chrToIndex = {}\n        chrNames = []\n        chrAliasTable = {}\n\n        for (i = 0; i < nRef; ++i) {\n            var lName = readInt(ba, p)\n            var name = ''\n            for (var j = 0; j < lName - 1; ++j) {\n                name += String.fromCharCode(ba[p + 4 + j])\n            }\n            var lRef = readInt(ba, p + lName + 4)\n            //dlog(name + ': ' + lRef);\n\n            chrToIndex[name] = i\n            chrNames[i] = name\n\n            if (genome) {\n                alias = genome.getChromosomeName(name)\n                chrAliasTable[alias] = name\n            }\n\n            p = p + 8 + lName\n        }\n\n        return {\n            magicNumber: magic,\n            size: p,\n            chrNames: chrNames,\n            chrToIndex: chrToIndex,\n            chrAliasTable: chrAliasTable\n        }\n\n    },\n\n    bam_tag2cigar: function (ba, block_end, seq_offset, lseq, al, cigarArray) {\n\n        function type2size(x) {\n            if (x === 'C' || x === 'c' || x === 'A') return 1\n            else if (x === 'S' || x === 's') return 2\n            else if (x === 'I' || x === 'i' || x === 'f') return 4\n            else return 0\n        }\n\n        // test if the real CIGAR is encoded in a CG:B,I tag\n        if (cigarArray.length !== 1 || al.start < 0) return false\n        var p = seq_offset + ((lseq + 1) >> 1) + lseq\n        while (p + 4 < block_end) {\n            var tag = String.fromCharCode(ba[p]) + String.fromCharCode(ba[p + 1])\n            if (tag === 'CG') break\n            var type = String.fromCharCode(ba[p + 2])\n            if (type === 'B') { // the binary array type\n                type = String.fromCharCode(ba[p + 3])\n                var size = type2size(type)\n                var len = readInt(ba, p + 4)\n                p += 8 + size * len\n            } else if (type === 'Z' || type === 'H') { // 0-terminated string\n                p += 3\n                while (ba[p++] !== 0) {\n                }\n            } else { // other atomic types\n                p += 3 + type2size(type)\n            }\n        }\n        if (p >= block_end) return false // no CG tag\n        if (String.fromCharCode(ba[p + 2]) !== 'B' || String.fromCharCode(ba[p + 3]) !== 'I') return false // not of type B,I\n\n        // now we know the real CIGAR length and its offset in the binary array\n        var cigar_len = readInt(ba, p + 4)\n        var cigar_offset = p + 8 // 4 for \"CGBI\" and 4 for length\n        if (cigar_offset + cigar_len * 4 > block_end) return false // out of bound\n\n        // decode CIGAR\n        var cigar = ''\n        var lengthOnRef = 0\n        cigarArray.length = 0 // empty the old array\n        p = cigar_offset\n        for (var k = 0; k < cigar_len; ++k, p += 4) {\n            var cigop = readInt(ba, p)\n            var opLen = (cigop >> 4)\n            var opLtr = CIGAR_DECODER[cigop & 0xf]\n            if (opLtr === 'M' || opLtr === 'EQ' || opLtr === 'X' || opLtr === 'D' || opLtr === 'N' || opLtr === '=')\n                lengthOnRef += opLen\n            cigar = cigar + opLen + opLtr\n            cigarArray.push({len: opLen, ltr: opLtr})\n        }\n\n        // update alignment record. We are not updating bin, as apparently it is not used.\n        al.cigar = cigar\n        al.lengthOnRef = lengthOnRef\n        return true\n    },\n\n    /**\n     *\n     * @param ba                 bytes to decode as an UInt8Array\n     * @param offset             offset position of ba array to start decoding\n     * @param alignmentContainer container to receive the decoded alignments\n     * @param min                minimum genomic position\n     * @param max                maximum genomic position\n     * @param chrIdx             chromosome index\n     * @param chrNames            array of chromosome names\n     * @param filter             a BamFilter object\n     *\n     * @return true if we have moved beyond the right end of the genomic range.\n     */\n    decodeBamRecords: function (ba, offset, alignmentContainer, chrNames, chrIdx, min, max, filter) {\n\n        while (offset < ba.length) {\n\n            const blockSize = readInt(ba, offset)\n            const blockEnd = offset + blockSize + 4\n            const alignment = new BamAlignment()\n            const refID = readInt(ba, offset + 4)\n            const pos = readInt(ba, offset + 8)\n\n            if (blockEnd > ba.length) {\n                return\n            }\n            if (refID < 0) {\n                offset = blockEnd\n                continue   // unmapped read\n            } else if (chrIdx !== undefined && (refID > chrIdx || pos > max)) {\n                return true    // off right edge, we're done\n            } else if (chrIdx !== undefined && (refID < chrIdx)) {\n                offset = blockEnd\n                continue   // ref ID to left of start, not sure this is possible\n            }\n\n            const bin_mq_nl = readInt(ba, offset + 12)\n            const bin = (bin_mq_nl & 0xffff0000) >> 16\n            const mq = (bin_mq_nl & 0xff00) >> 8\n            const nl = bin_mq_nl & 0xff\n\n            const flag_nc = readInt(ba, offset + 16)\n            const flag = (flag_nc & 0xffff0000) >> 16\n            const nc = flag_nc & 0xffff\n\n            const lseq = readInt(ba, offset + 20)\n            const mateChrIdx = readInt(ba, offset + 24)\n            const matePos = readInt(ba, offset + 28)\n            const fragmentLength = readInt(ba, offset + 32)\n\n            let readName = []\n            for (let j = 0; j < nl - 1; ++j) {\n                readName.push(String.fromCharCode(ba[offset + 36 + j]))\n            }\n            readName = readName.join('')\n\n            let lengthOnRef = 0\n            let cigar = ''\n            let p = offset + 36 + nl\n            const cigarArray = []\n            // concatenate M,=,EQ,and X\n\n            let lastCigRecord\n            let mOperators = new Set(['M', 'EQ', 'X', '='])\n            for (let c = 0; c < nc; ++c) {\n                var cigop = readInt(ba, p)\n                var opLen = (cigop >> 4)\n                var opLtr = CIGAR_DECODER[cigop & 0xf]\n                if (opLtr === 'M' || opLtr === 'EQ' || opLtr === 'X' || opLtr === 'D' || opLtr === 'N' || opLtr === '=')\n                    lengthOnRef += opLen\n                cigar = cigar + opLen + opLtr\n                p += 4\n\n                // if(mOperators.has(opLtr) && mOperators.has(lastCigRecord.ltr)) {\n                //     lastCigRecord.len += opLen;\n                //     lastCigRecord.ltr = 'M'\n                // }\n                // else {\n                lastCigRecord = {len: opLen, ltr: opLtr}\n                cigarArray.push(lastCigRecord)\n                //}\n            }\n\n            alignment.chr = chrNames[refID]\n            alignment.start = pos\n            alignment.flags = flag\n            alignment.strand = !(flag & READ_STRAND_FLAG)\n            alignment.readName = readName\n            alignment.cigar = cigar\n            alignment.lengthOnRef = lengthOnRef\n            alignment.fragmentLength = fragmentLength\n            alignment.mq = mq\n\n            BamUtils.bam_tag2cigar(ba, blockEnd, p, lseq, alignment, cigarArray)\n\n            alignment.end = alignment.start + alignment.lengthOnRef\n\n            if (alignment.end < min) {\n                offset = blockEnd\n                continue\n            }  // Record out-of-range \"to the left\", skip to next one\n\n\n            let seq = []\n            const seqBytes = (lseq + 1) >> 1\n            for (let j = 0; j < seqBytes; ++j) {\n                var sb = ba[p + j]\n                seq.push(SEQ_DECODER[(sb & 0xf0) >> 4])\n                seq.push(SEQ_DECODER[(sb & 0x0f)])\n            }\n            seq = seq.slice(0, lseq).join('')  // seq might have one extra character (if lseq is an odd number)\n            p += seqBytes\n\n\n            const qualArray = []\n            for (let j = 0; j < lseq; ++j) {\n                qualArray.push(ba[p + j])\n            }\n            p += lseq\n\n            if (mateChrIdx >= 0) {\n                alignment.mate = {\n                    chr: chrNames[mateChrIdx],\n                    position: matePos,\n                    strand: !(flag & MATE_STRAND_FLAG)\n                }\n            }\n\n            alignment.seq = seq\n            alignment.qual = qualArray\n            alignment.tagBA = new Uint8Array(ba.buffer.slice(p, blockEnd))  // decode these on demand\n\n            this.setPairOrientation(alignment)\n\n            if ((undefined === filter || filter.pass(alignment))) {\n                makeBlocks(alignment, cigarArray)\n                alignmentContainer.push(alignment)\n            }\n            offset = blockEnd\n        }\n    },\n\n    decodeSamRecords: function (sam, alignmentContainer, chr, min, max, filter) {\n\n        var lines, i, j, len, tokens, blocks, pos, qualString, rnext, pnext, lengthOnRef,\n            alignment, cigarArray, started\n\n        lines = StringUtils.splitLines(sam)\n        len = lines.length\n        started = false\n\n        for (i = 0; i < len; i++) {\n\n            tokens = lines[i].split('\\t')\n\n            alignment = new BamAlignment()\n\n            alignment.chr = tokens[2]\n            alignment.start = Number.parseInt(tokens[3]) - 1\n            alignment.flags = Number.parseInt(tokens[1])\n            alignment.readName = tokens[0]\n            alignment.strand = !(alignment.flags & READ_STRAND_FLAG)\n            alignment.mq = Number.parseInt(tokens[4])\n            alignment.cigar = tokens[5]\n            alignment.fragmentLength = Number.parseInt(tokens[8])\n            alignment.seq = tokens[9]\n\n            if (alignment.chr === '*' || !alignment.isMapped()) continue  // Unmapped\n\n            if (alignment.chr !== chr) {\n                if (started) break // Off the right edge, we're done\n                else continue // Possibly to the left, skip but keep looping\n            } else if (alignment.start > max) {\n                break    // off right edge, we're done\n            }\n\n            lengthOnRef = 0\n            cigarArray = buildOperators(alignment.cigar)\n            cigarArray.forEach(function (op) {\n                var opLen = op.len\n                var opLtr = op.ltr\n                if (opLtr === 'M' || opLtr === 'EQ' || opLtr === 'X' || opLtr === 'D' || opLtr === 'N' || opLtr === '=')\n                    lengthOnRef += opLen\n            })\n            alignment.lengthOnRef = lengthOnRef\n            // TODO for lh3: parse the CG:B,I tag in SAM here\n\n            if (alignment.start + lengthOnRef < min) {\n                continue    // To the left, skip and continue\n            }\n\n\n            qualString = tokens[10]\n            alignment.qual = []\n            for (j = 0; j < qualString.length; j++) {\n                alignment.qual[j] = qualString.charCodeAt(j) - 33\n            }\n            alignment.tagDict = tokens.length < 11 ? {} : decodeSamTags(tokens.slice(11))\n\n            if (alignment.isMateMapped()) {\n                rnext = tokens[6]\n                alignment.mate = {\n                    chr: (rnext === '=') ? alignment.chr : rnext,\n                    position: Number.parseInt(tokens[7]),\n                    strand: !(alignment.flags & MATE_STRAND_FLAG)\n                }\n            }\n\n            this.setPairOrientation(alignment)\n\n            if (undefined === filter || filter.pass(alignment)) {\n                makeBlocks(alignment, cigarArray)\n                alignmentContainer.push(alignment)\n            }\n        }\n    },\n\n    setReaderDefaults: function (reader, config) {\n\n        reader.filter = new BamFilter(config.filter)\n\n        if (config.readgroup) {\n            reader.filter.readgroups = new Set([config.readgroup])\n        }\n\n        reader.alleleFreqThreshold = config.alleleFreqThreshold === undefined ? DEFAULT_ALLELE_FREQ_THRESHOLD : config.alleleFreqThreshold\n\n        reader.samplingWindowSize = config.samplingWindowSize === undefined ? DEFAULT_SAMPLING_WINDOW_SIZE : config.samplingWindowSize\n        reader.samplingDepth = config.samplingDepth === undefined ? DEFAULT_SAMPLING_DEPTH : config.samplingDepth\n\n        if (reader.samplingDepth > MAXIMUM_SAMPLING_DEPTH) {\n            console.log(\"Warning: attempt to set sampling depth > maximum value of \" + MAXIMUM_SAMPLING_DEPTH)\n            reader.samplingDepth = MAXIMUM_SAMPLING_DEPTH\n        }\n\n        if (config.viewAsPairs) {\n            reader.pairsSupported = true\n        } else {\n            reader.pairsSupported = config.pairsSupported === undefined ? true : config.pairsSupported\n        }\n    },\n\n    setPairOrientation: function (alignment) {\n\n        if (alignment.isMapped() && alignment.mate && alignment.isMateMapped() && alignment.mate.chr === alignment.chr) {\n            var s1 = alignment.strand ? 'F' : 'R'\n\n            var mate = alignment.mate\n            var s2 = mate.strand ? 'F' : 'R'\n            var o1 = ' '\n            var o2 = ' '\n            if (alignment.isFirstOfPair()) {\n                o1 = '1'\n                o2 = '2'\n            } else if (alignment.isSecondOfPair()) {\n                o1 = '2'\n                o2 = '1'\n            }\n\n            var tmp = []\n            var isize = alignment.fragmentLength\n            var estReadLen = alignment.end - alignment.start\n            if (isize === 0) {\n                //isize not recorded.  Need to estimate.  This calculation was validated against an Illumina\n                // -> <- library bam.\n                var estMateEnd = alignment.start < mate.position ?\n                    mate.position + estReadLen : mate.position - estReadLen\n                isize = estMateEnd - alignment.start\n            }\n\n            //if (isize > estReadLen) {\n            if (isize > 0) {\n                tmp[0] = s1\n                tmp[1] = o1\n                tmp[2] = s2\n                tmp[3] = o2\n\n            } else {\n                tmp[2] = s1\n                tmp[3] = o1\n                tmp[0] = s2\n                tmp[1] = o2\n            }\n            // }\n            alignment.pairOrientation = tmp.join('')\n        }\n    },\n\n    computeLengthOnReference: function (cigarString) {\n\n        let len = 0\n        let buf = ''\n\n        for (let i = 0; i < cigarString.length; i++) {\n            const c = cigarString.charCodeAt(i)\n            if (c > 47 && c < 58) {\n                buf += cigarString.charAt(i)\n            } else {\n                switch (c) {\n                    case 78:  // N\n                    case 68:  // D\n                    case 77:  // M\n                    case 61:  // =\n                    case 88:  // X\n                        len += parseInt(buf.toString())\n                }\n                buf = ''\n            }\n        }\n        return len\n    }\n}\n\n\n/**\n * Split the alignment record into blocks as specified in the cigarArray.  Each aligned block contains\n * its portion of the read sequence and base quality strings.  A read sequence or base quality string\n * of \"*\" indicates the value is not recorded.  In all other cases the length of the block sequence (block.seq)\n * and quality string (block.qual) must == the block length.\n *\n * @param alignment\n * @param cigarArray\n * @returns array of blocks\n */\nfunction makeBlocks(alignment, cigarArray) {\n\n    const blocks = []\n\n    let insertions\n    let gaps\n    let seqOffset = 0\n    let pos = alignment.start\n\n    alignment.scStart = alignment.start\n    alignment.scLengthOnRef = alignment.lengthOnRef\n\n    for (let c of cigarArray) {\n\n        let scPos\n        switch (c.ltr) {\n            case 'H' :\n                break // ignore hard clips\n            case 'P' :\n                break // ignore pads\n            case 'S' :\n\n                scPos = pos\n                alignment.scLengthOnRef += c.len\n                if (blocks.length === 0) {\n                    alignment.scStart -= c.len\n                    scPos -= c.len\n                }\n                blocks.push(new AlignmentBlock({\n                    start: scPos,\n                    seqOffset: seqOffset,\n                    len: c.len,\n                    type: 'S'\n                }))\n                seqOffset += c.len\n                break // soft clip read bases\n            case 'N' :\n            case 'D':\n                if (gaps === undefined) {\n                    gaps = []\n                }\n                gaps.push({\n                    start: pos,\n                    len: c.len,\n                    type: c.ltr\n                })\n                pos += c.len\n                break\n            case 'I' :\n\n                if (insertions === undefined) {\n                    insertions = []\n                }\n                insertions.push(new AlignmentBlock({\n                    start: pos,\n                    len: c.len,\n                    seqOffset: seqOffset,\n                    type: 'I'\n                }))\n                seqOffset += c.len\n                break\n            case 'M' :\n            case 'EQ' :\n            case '=' :\n            case 'X' :\n                blocks.push(new AlignmentBlock({\n                    start: pos,\n                    seqOffset: seqOffset,\n                    len: c.len,\n                    type: 'M'\n                }))\n                seqOffset += c.len\n                pos += c.len\n\n                break\n\n            default :\n                console.log('Error processing cigar element: ' + c.len + c.ltr)\n        }\n    }\n\n    alignment.blocks = blocks\n    alignment.insertions = insertions\n    alignment.gaps = gaps\n\n}\n\nfunction readInt(ba, offset) {\n    return (ba[offset + 3] << 24) | (ba[offset + 2] << 16) | (ba[offset + 1] << 8) | (ba[offset])\n}\n\nfunction readShort(ba, offset) {\n    return (ba[offset + 1] << 8) | (ba[offset])\n}\n\n/**\n * Build a list of cigar operators from a cigarString.  Removes padding operators and concatenates consecutive\n * operators of the same type\n *\n * @param cigarString\n * @return\n */\nfunction buildOperators(cigarString) {\n\n    var operators, buffer, i, len, prevOp, next, op, nBases\n\n    operators = []\n    buffer = []\n\n    // Create list of cigar operators\n    prevOp = null\n    len = cigarString.length\n    for (i = 0; i < len; i++) {\n        next = cigarString.charAt(i)\n        if (isDigit(next)) {\n            buffer.push(next)\n        } else {\n            op = next\n            nBases = Number.parseInt(buffer.join(''))\n            buffer = []\n\n            if (prevOp !== null && prevOp.ltr === op) {\n                prevOp.len += nBases\n            } else {\n                prevOp = {len: nBases, ltr: op}\n                operators.push(prevOp)\n            }\n        }\n    }\n    return operators\n\n}\n\nfunction isDigit(a) {\n    var charCode = a.charCodeAt(0)\n    return (charCode >= 48 && charCode <= 57) // 0-9\n}\n\nfunction decodeSamTags(tags) {\n\n    var tagDict = {}\n    tags.forEach(function (tag) {\n        var tokens = tag.split(':')\n        tagDict[tokens[0]] = tokens[2]\n    })\n\n    return tagDict\n}\n\nexport default BamUtils\n\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport AlignmentContainer from \"./alignmentContainer.js\"\nimport BamUtils from \"./bamUtils.js\"\nimport {BGZip, FeatureCache, igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions, isDataURL} from \"../util/igvUtils.js\"\n\n/**\n * Class for reading a bam file\n *\n * @param config\n * @constructor\n */\nclass BamReaderNonIndexed {\n\n    constructor(config, genome) {\n        this.config = config\n        this.genome = genome\n        this.bamPath = config.url\n        this.isDataUri = isDataURL(config.url)\n        BamUtils.setReaderDefaults(this, config)\n    }\n\n    // Return an alignment container\n    async readAlignments(chr, bpStart, bpEnd) {\n\n        if (this.alignmentCache) {\n            const header = this.header\n            const queryChr = header.chrAliasTable.hasOwnProperty(chr) ? header.chrAliasTable[chr] : chr\n            const qAlignments = this.alignmentCache.queryFeatures(queryChr, bpStart, bpEnd)\n            const alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, this.config)\n            for (let a of qAlignments) {\n                alignmentContainer.push(a)\n            }\n            alignmentContainer.finish()\n            return alignmentContainer\n\n        } else {\n            if (this.isDataUri) {\n                const data = decodeDataURI(this.bamPath)\n                const unc = BGZip.unbgzf(data.buffer)\n                this.parseAlignments(unc)\n                return this.fetchAlignments(chr, bpStart, bpEnd)\n            } else {\n                const arrayBuffer = await igvxhr.loadArrayBuffer(this.bamPath, buildOptions(this.config))\n                const unc = BGZip.unbgzf(arrayBuffer)\n                this.parseAlignments(unc)\n                return this.fetchAlignments(chr, bpStart, bpEnd)\n            }\n        }\n\n    }\n\n    parseAlignments(data) {\n        const alignments = []\n        this.header = BamUtils.decodeBamHeader(data)\n        BamUtils.decodeBamRecords(data, this.header.size, alignments, this.header.chrNames)\n        this.alignmentCache = new FeatureCache(alignments, this.genome)\n    }\n\n    fetchAlignments(chr, bpStart, bpEnd) {\n        const queryChr = this.header.chrAliasTable.hasOwnProperty(chr) ? this.header.chrAliasTable[chr] : chr\n        const features = this.alignmentCache.queryFeatures(queryChr, bpStart, bpEnd)\n        const alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, this.config)\n        for (let feature of features) {\n            alignmentContainer.push(feature)\n        }\n        alignmentContainer.finish()\n        return alignmentContainer\n    }\n\n}\n\nfunction decodeDataURI(dataURI) {\n\n    const split = dataURI.split(',')\n    const info = split[0].split(':')[1]\n    let dataString = split[1]\n\n    if (info.indexOf('base64') >= 0) {\n        dataString = atob(dataString)\n    } else {\n        dataString = decodeURI(dataString)\n    }\n\n    const bytes = new Uint8Array(dataString.length)\n    for (var i = 0; i < dataString.length; i++) {\n        bytes[i] = dataString.charCodeAt(i)\n    }\n    return bytes\n}\n\n\nexport default BamReaderNonIndexed\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {loadIndex} from \"./indexFactory.js\"\nimport AlignmentContainer from \"./alignmentContainer.js\"\nimport BamUtils from \"./bamUtils.js\"\nimport {BGZip, igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\nimport BGZBlockLoader from \"./bgzBlockLoader.js\"\n\n/**\n * Class for reading a bam file\n *\n * @param config\n * @constructor\n */\nclass BamReader {\n\n    constructor(config, genome) {\n        this.config = config\n        this.genome = genome\n        this.bamPath = config.url\n        this.baiPath = config.indexURL\n        BamUtils.setReaderDefaults(this, config)\n\n        this._blockLoader = new BGZBlockLoader(config)\n    }\n\n    async readAlignments(chr, bpStart, bpEnd) {\n\n        const chrToIndex = await this.getChrIndex()\n        const queryChr = this.chrAliasTable.hasOwnProperty(chr) ? this.chrAliasTable[chr] : chr\n        const chrId = chrToIndex[queryChr]\n        const alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, this.config)\n\n        if (chrId === undefined) {\n            return alignmentContainer\n\n        } else {\n\n            const bamIndex = await this.getIndex()\n            const chunks = bamIndex.chunksForRange(chrId, bpStart, bpEnd)\n\n            if (!chunks || chunks.length === 0) {\n                return alignmentContainer\n            }\n\n            for (let c of chunks) {\n                const ba = await this._blockLoader.getData(c.minv, c.maxv)\n                const done = BamUtils.decodeBamRecords(ba, c.minv.offset, alignmentContainer, this.indexToChr, chrId, bpStart, bpEnd, this.filter)\n                if (done) {\n                    break\n                }\n            }\n            alignmentContainer.finish()\n            return alignmentContainer\n        }\n    }\n\n    async getHeader() {\n        if (!this.header) {\n            const genome = this.genome\n            const index = await this.getIndex()\n            let start\n            let len\n            if (index.firstBlockPosition) {\n                const bsizeOptions = buildOptions(this.config, {range: {start: index.firstBlockPosition, size: 26}})\n                const abuffer = await igvxhr.loadArrayBuffer(this.bamPath, bsizeOptions)\n                const bsize = BGZip.bgzBlockSize(abuffer)\n                len = index.firstBlockPosition + bsize   // Insure we get the complete compressed block containing the header\n            } else {\n                len = 64000\n            }\n\n            const options = buildOptions(this.config, {range: {start: 0, size: len}})\n            this.header = await BamUtils.readHeader(this.bamPath, options, genome)\n        }\n        return this.header\n    }\n\n    async getIndex() {\n        const genome = this.genome\n        if (!this.index) {\n            this.index = await loadIndex(this.baiPath, this.config, genome)\n        }\n        return this.index\n    }\n\n    async getChrIndex() {\n        if (this.chrToIndex) {\n            return this.chrToIndex\n        } else {\n            const header = await this.getHeader()\n            this.chrToIndex = header.chrToIndex\n            this.indexToChr = header.chrNames\n            this.chrAliasTable = header.chrAliasTable\n            return this.chrToIndex\n\n        }\n    }\n}\n\nexport default BamReader\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport BamReader from \"./bamReader.js\"\nimport AlignmentContainer from \"./alignmentContainer.js\"\nimport BamUtils from \"./bamUtils.js\"\n\nclass ShardedBamReader {\n\n    constructor(config, genome) {\n\n        this.config = config\n        this.genome = genome\n\n        const bamReaders = {}\n        const chrAliasTable = {}\n\n        config.sources.sequences.forEach(function (chr) {\n            const queryChr = genome ? genome.getChromosomeName(chr) : chr\n            bamReaders[queryChr] = getReader(config, genome, chr)\n        })\n\n        this.bamReaders = bamReaders\n\n        BamUtils.setReaderDefaults(this, config)\n    }\n\n    async readAlignments(chr, start, end) {\n\n        if (!this.bamReaders.hasOwnProperty(chr)) {\n            return new AlignmentContainer(chr, start, end, this.config)\n        } else {\n\n            let reader = this.bamReaders[chr]\n            const a = await reader.readAlignments(chr, start, end)\n            return a\n        }\n    }\n}\n\nfunction getReader(config, genome, chr) {\n    const tmp = {\n        url: config.sources.url.replace(\"$CHR\", chr)\n    }\n    if (config.sources.indexURL) {\n        tmp.indexURL = config.sources.indexURL.replace(\"$CHR\", chr)\n    }\n    const bamConfig = Object.assign(config, tmp)\n\n    // TODO -- support non-indexed, htsget, etc\n    return new BamReader(bamConfig, genome)\n}\n\nexport default ShardedBamReader\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport AlignmentContainer from \"./alignmentContainer.js\"\nimport BamUtils from \"./bamUtils.js\"\nimport {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\n\n/**\n * Class for reading bam records from an igv.js-flask server backed by pysam.  Deprecated.\n *\n * @param config\n * @constructor\n */\nconst BamWebserviceReader = function (config, genome) {\n\n    this.config = config\n    this.genome = genome\n    BamUtils.setReaderDefaults(this, config)\n\n}\n\n// Example http://localhost:5000/alignments/?reference=/Users/jrobinso/hg19mini.fa&file=/Users/jrobinso/cram_with_crai_index.cram&region=1:100-2000\n\nBamWebserviceReader.prototype.readAlignments = function (chr, bpStart, bpEnd) {\n\n    var self = this\n\n    return getHeader.call(self)\n\n        .then(function (header) {\n\n            var queryChr, url\n\n            queryChr = header.chrAliasTable.hasOwnProperty(chr) ? header.chrAliasTable[chr] : chr\n\n            url = self.config.url +\n                \"?reference=\" + self.config.referenceFile +\n                \"&file=\" + self.config.alignmentFile + \"\" +\n                \"&region=\" + queryChr + \":\" + bpStart + \"-\" + bpEnd\n\n\n            return igvxhr.loadString(url, buildOptions(self.config))\n\n                .then(function (sam) {\n\n                    var alignmentContainer, chrId, ba\n\n                    chrId = header.chrToIndex[queryChr]\n\n                    alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, self.config)\n\n                    BamUtils.decodeSamRecords(sam, alignmentContainer, queryChr, bpStart, bpEnd, self.filter)\n\n                    return alignmentContainer\n\n                })\n\n        })\n}\n\n\n// Example  http://localhost:5000/alignments/?reference=/Users/jrobinso/hg19mini.fa&file=/Users/jrobinso/cram_with_crai_index.cram&options=-b%20-H\nfunction getHeader() {\n\n    const self = this\n    const genome = this.genome\n\n    if (this.header) {\n\n        return Promise.resolve(this.header)\n\n    } else {\n\n        const url = this.config.url + \"?file=\" + this.config.alignmentFile + \"&options=-b,-H\"\n        const options = buildOptions(this.config)\n\n        return BamUtils.readHeader(url, options, genome)\n\n            .then(function (header) {\n\n                self.header = header\n                return header\n\n            })\n    }\n\n}\n\n\nfunction readInt(ba, offset) {\n    return (ba[offset + 3] << 24) | (ba[offset + 2] << 16) | (ba[offset + 1] << 8) | (ba[offset])\n}\n\nexport default BamWebserviceReader\n\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport HtsgetReader from \"./htsgetReader.js\"\nimport AlignmentContainer from \"../bam/alignmentContainer.js\"\nimport BamUtils from \"../bam/bamUtils.js\"\nimport {BGZip} from \"../../node_modules/igv-utils/src/index.js\"\n\nclass HtsgetBamReader extends HtsgetReader {\n\n    constructor(config, genome) {\n        super(config, genome)\n        BamUtils.setReaderDefaults(this, config)\n    }\n\n\n    async readAlignments(chr, start, end) {\n\n        if (!this.header) {\n            const compressedData = await this.readHeaderData()\n            const ba = BGZip.unbgzf(compressedData.buffer)\n            this.header = BamUtils.decodeBamHeader(ba, this.genome)\n            this.chrAliasTable = new Map()\n            for (let key of Object.keys(this.header.chrAliasTable)) {\n                this.chrAliasTable.set(key, this.header.chrAliasTable[key])\n            }\n        }\n\n        let queryChr = this.chrAliasTable.has(chr) ? this.chrAliasTable.get(chr) : chr\n\n        const compressedData = await this.readData(queryChr, start, end)\n\n        // BAM decoding\n        const ba = BGZip.unbgzf(compressedData.buffer)\n\n        const chrIdx = this.header.chrToIndex[chr]\n        const alignmentContainer = new AlignmentContainer(chr, start, end, this.config)\n        BamUtils.decodeBamRecords(ba, this.header.size, alignmentContainer, this.header.chrNames, chrIdx, start, end)\n        alignmentContainer.finish()\n\n        return alignmentContainer\n\n    }\n\n}\n\n\nexport default HtsgetBamReader","/*! For license information please see cram-bundle.js.LICENSE.txt */\nconst fn = ()=>{var e={368:function(e,t,r){\"use strict\";var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e))}catch(e){o(e)}}function a(e){try{f(n.throw(e))}catch(e){o(e)}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t)}))).then(s,a)}f((n=n.apply(e,t||[])).next())}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const o=i(r(4105)),s=i(r(1269)),a=r(597),f=r(3427),h=r(8577);function l(e,t){if(t.some((e=>void 0===e)))throw new h.CramMalformedError(\"invalid .crai index file\");const[r,n,i,o,s,a]=t;e[r]||(e[r]=[]),e[r].push({start:n,span:i,containerStart:o,sliceStart:s,sliceBytes:a})}t.default=class{constructor(e){this.filehandle=(0,f.open)(e.url,e.path,e.filehandle),this._parseCache=new o.default({cache:new s.default({maxSize:1}),fill:(e,t)=>this.parseIndex()})}parseIndex(){const e={};return this.filehandle.readFile().then((e=>31===e[0]&&139===e[1]?(0,a.unzip)(e):e)).then((t=>{if(t.length>4&&21578050===t.readUInt32LE(0))throw new h.CramMalformedError(\"invalid .crai index file. note: file appears to be a .bai index. this is technically legal but please open a github issue if you need support\");let r=[],n=\"\";for(let i=0;i<t.length;i+=1){const o=t[i];if(o>=48&&o<=57||!n&&45===o)n+=String.fromCharCode(o);else if(9===o)r.push(Number.parseInt(n,10)),n=\"\";else if(10===o)r.push(Number.parseInt(n,10)),n=\"\",l(e,r),r=[];else if(13!==o&&32!==o)throw new h.CramMalformedError(\"invalid .crai index file\")}return n&&r.push(Number.parseInt(n,10)),6===r.length&&l(e,r),Object.entries(e).forEach((([t,r])=>{e[t]=r.sort(((e,t)=>e.start-t.start||e.span-t.span))})),e}))}getIndex(e={}){return this._parseCache.get(\"index\",null,e.signal)}hasDataForReferenceSequence(e){return n(this,void 0,void 0,(function*(){return!!(yield this.getIndex())[e]}))}getEntriesForRange(e,t,r){return n(this,void 0,void 0,(function*(){const n=(yield this.getIndex())[e];if(!n)return[];const i=e=>{const n=e.start,i=e.start+e.span;return n>r?-1:i<=t?1:0},o=[];for(let e=0;e<n.length;e+=1)0===i(n[e])&&o.push(n[e]);return o}))}}},1050:(e,t)=>{\"use strict\";Object.defineProperty(t,\"__esModule\",{value:!0}),t.default=class{constructor(e,t){this.parameters=e,this.dataType=t}}},4863:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const i=r(8577),o=n(r(1050)),s=r(1074);class a extends o.default{constructor(e,t){if(super(e,t),\"int\"!==this.dataType)throw new i.CramUnimplementedError(`${this.dataType} decoding not yet implemented by BETA codec`)}decode(e,t,r,n){return(0,s.getBits)(t.content,n.coreBlock,this.parameters.length)-this.parameters.offset}}t.default=a},1738:function(e,t,r){\"use 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e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const i=r(8577),o=n(r(1050)),s=r(1074);class a extends o.default{constructor(e,t){if(super(e,t),this.codes={},this.codeBook={},this.sortedByValue=[],this.sortedCodes=[],this.sortedValuesByBitCode=[],this.sortedBitCodes=[],this.sortedBitLengthsByBitCode=[],this.bitCodeToValue=[],![\"byte\",\"int\"].includes(this.dataType))throw new TypeError(`${this.dataType} decoding not yet implemented by HUFFMAN_INT codec`);this.buildCodeBook(),this.buildCodes(),this.buildCaches(),0===this.sortedCodes[0].bitLength&&(this._decode=this._decodeZeroLengthCode)}buildCodeBook(){let e=new Array(this.parameters.numCodes);for(let t=0;t<this.parameters.numCodes;t+=1)e[t]={symbol:this.parameters.symbols[t],bitLength:this.parameters.bitLengths[t]};e=e.sort(((e,t)=>e.bitLength-t.bitLength||e.symbol-t.symbol)),this.codeBook={},e.forEach((e=>{this.codeBook[e.bitLength]||(this.codeBook[e.bitLength]=[]),this.codeBook[e.bitLength].push(e.symbol)}))}buildCodes(){this.codes={};let e=0,t=-1;Object.entries(this.codeBook).forEach((([r,n])=>{const o=parseInt(r,10);n.forEach((r=>{const n={bitLength:o,value:r,bitCode:0};t+=1;const s=o-e;if(t<<=s,n.bitCode=t,e+=s,function(e){let t=e-(e>>1)&1431655765;return t=(858993459&t)+(t>>2&858993459),16843009*(t+(t>>4)&252645135)>>24}(t)>o)throw new i.CramMalformedError(\"Symbol out of 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r=e;this.sortedCodes[r+1].bitLength===t&&r<this.sortedCodes.length;r+=1)e+=1}}throw new i.CramMalformedError(\"Huffman symbol not found.\")}}t.default=a},8772:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0}),t.instantiateCodec=void 0;const i=r(8577),o=n(r(2082)),s=n(r(5844)),a=n(r(1405)),f=n(r(1738)),h=n(r(4863)),l=n(r(4229)),u=n(r(8821)),c={1:s.default,3:o.default,4:f.default,5:a.default,6:h.default,7:u.default,9:l.default};t.instantiateCodec=function e(t,r){const n=(o=\"ignore\"===r?0:t.codecId,c[o]);var o;if(!n)throw new i.CramUnimplementedError(`no codec implemented for codec ID ${t.codecId}`);return new n(t.parameters,r,e)}},8821:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const i=r(8577),o=n(r(1050)),s=r(1074);class a extends 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n=r(8772),i=r(8577),o={BF:\"int\",CF:\"int\",RI:\"int\",RL:\"int\",AP:\"int\",RG:\"int\",MF:\"int\",NS:\"int\",NP:\"int\",TS:\"int\",NF:\"int\",TC:\"byte\",TN:\"int\",FN:\"int\",FC:\"byte\",FP:\"int\",BS:\"byte\",IN:\"byteArray\",SC:\"byteArray\",DL:\"int\",BA:\"byte\",BB:\"byteArray\",RS:\"int\",PD:\"int\",HC:\"int\",MQ:\"int\",RN:\"byteArray\",QS:\"byte\",QQ:\"byteArray\",TL:\"int\"};t.default=class{constructor(e){this.dataSeriesCodecCache={},this.tagCodecCache={},this.tagEncoding={},this.readNamesIncluded=e.preservation.RN,this.APdelta=e.preservation.AP,this.referenceRequired=!!e.preservation.RR,this.tagIdsDictionary=e.preservation.TD,this.substitutionMatrix=function(e){const t=new Array(5);for(let e=0;e<5;e+=1)t[e]=new Array(4);return t[0][e[0]>>6&3]=\"C\",t[0][e[0]>>4&3]=\"G\",t[0][e[0]>>2&3]=\"T\",t[0][e[0]>>0&3]=\"N\",t[1][e[1]>>6&3]=\"A\",t[1][e[1]>>4&3]=\"G\",t[1][e[1]>>2&3]=\"T\",t[1][e[1]>>0&3]=\"N\",t[2][e[2]>>6&3]=\"A\",t[2][e[2]>>4&3]=\"C\",t[2][e[2]>>2&3]=\"T\",t[2][e[2]>>0&3]=\"N\",t[3][e[3]>>6&3]=\"A\",t[3][e[3]>>4&3]=\"C\",t[3][e[3]>>2&3]=\"G\",t[3][e[3]>>0&3]=\"N\",t[4][e[4]>>6&3]=\"A\",t[4][e[4]>>4&3]=\"C\",t[4][e[4]>>2&3]=\"G\",t[4][e[4]>>0&3]=\"T\",t}(e.preservation.SM),this.dataSeriesEncoding=e.dataSeriesEncoding,this.tagEncoding=e.tagEncoding,this.preservation=e.preservation,this._size=e._size,this._endPosition=e._endPosition}getCodecForTag(e){if(!this.tagCodecCache[e]){const t=this.tagEncoding[e];t&&(this.tagCodecCache[e]=(0,n.instantiateCodec)(t,\"byteArray\"))}return this.tagCodecCache[e]}getTagNames(e){return this.tagIdsDictionary[e]}getCodecForDataSeries(e){let t=this.dataSeriesCodecCache[e];if(void 0===t){const r=this.dataSeriesEncoding[e];if(r){const s=o[e];if(!s)throw new i.CramMalformedError(`data series name ${e} not defined in file compression header`);t=(0,n.instantiateCodec)(r,s),this.dataSeriesCodecCache[e]=t}}return t}toJSON(){const e={};return Object.keys(this).forEach((t=>{/Cache$/.test(t)||(e[t]=this[t])})),e}}},6284:function(e,t,r){\"use strict\";var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e))}catch(e){o(e)}}function a(e){try{f(n.throw(e))}catch(e){o(e)}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t)}))).then(s,a)}f((n=n.apply(e,t||[])).next())}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const o=r(8577),s=r(9488),a=i(r(6601)),f=i(r(8543));class h{constructor(e,t){this.file=e,this.filePosition=t}getHeader(){return this._readContainerHeader(this.filePosition)}getCompressionHeaderBlock(){return n(this,void 0,void 0,(function*(){if(!(yield 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e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const o=r(597),s=i(r(2779)),a=i(r(1269)),f=r(8577),h=i(r(9675)),l=r(6141),u=i(r(3498)),c=i(r(6284)),d=r(3427),p=r(9488),g=r(7578);class m{constructor(e){var t;if(this.file=(0,d.open)(e.url,e.path,e.filehandle),this.validateChecksums=!0,this.fetchReferenceSequenceCallback=e.seqFetch,this.options={checkSequenceMD5:e.checkSequenceMD5,cacheSize:null!==(t=e.cacheSize)&&void 0!==t?t:2e4},this.featureCache=new a.default({maxSize:this.options.cacheSize}),function(){const e=new Uint32Array([287454020]),t=new Uint8Array(e.buffer);return 68===t[0]?0:17===t[0]?1:2}()>0)throw new Error(\"Detected big-endian machine, may be unable to run\")}read(e,t,r,n){return this.file.read(e,t,r,n)}stat(){return this.file.stat()}getDefinition(){return n(this,void 0,void 0,(function*(){const e=Buffer.allocUnsafe(l.cramFileDefinition.maxLength);yield this.file.read(e,0,l.cramFileDefinition.maxLength,0);const t=l.cramFileDefinition.parser.parse(e).result;if(2!==t.majorVersion&&3!==t.majorVersion)throw new f.CramUnimplementedError(`CRAM version ${t.majorVersion} not supported`);return t}))}getSamHeader(){return n(this,void 0,void 0,(function*(){const e=yield this.getContainerById(0);if(!e)throw new f.CramMalformedError(\"file contains no containers\");const t=yield e.getFirstBlock();if(void 0===t)return(0,g.parseHeaderText)(\"\");const r=t.content,n=r.readInt32LE(0),i=r.toString(\"utf8\",4,4+n);return this.header=i,(0,g.parseHeaderText)(i)}))}getHeaderText(){return n(this,void 0,void 0,(function*(){return yield this.getSamHeader(),this.header}))}getSectionParsers(){return n(this,void 0,void 0,(function*(){const{majorVersion:e}=yield this.getDefinition();return(0,l.getSectionParsers)(e)}))}getContainerById(e){return n(this,void 0,void 0,(function*(){const t=yield this.getSectionParsers();let r=t.cramFileDefinition.maxLength;const{size:n}=yield this.file.stat(),{cramContainerHeader1:i}=t;let o;for(let t=0;t<=e;t+=1){if(r+i.maxLength+8>=n)return;o=this.getContainerAtPosition(r);const s=yield o.getHeader();if(!s)throw new f.CramMalformedError(`container ${e} not found in file`);if(0===t){r=s._endPosition;for(let e=0;e<s.numBlocks;e+=1){const e=yield this.readBlock(r);if(void 0===e)return;r=e._endPosition}}else r+=s._size+s.length}return o}))}checkCrc32(e,t,r,i){return n(this,void 0,void 0,(function*(){const n=Buffer.allocUnsafe(t);yield this.file.read(n,0,t,e);const o=s.default.unsigned(n);if(o!==r)throw new f.CramMalformedError(`crc mismatch in ${i}: recorded CRC32 = ${r}, but calculated CRC32 = ${o}`)}))}containerCount(){return n(this,void 0,void 0,(function*(){const e=yield this.getSectionParsers(),{size:t}=yield this.file.stat(),{cramContainerHeader1:r}=e;let n=0,i=e.cramFileDefinition.maxLength;for(;i+r.maxLength+8<t;){const e=yield this.getContainerAtPosition(i).getHeader();if(!e)break;if(0===n){i=e._endPosition;for(let t=0;t<e.numBlocks;t+=1){const e=yield this.readBlock(i);if(void 0===e)return;i=e._endPosition}}else i+=e._size+e.length;n+=1}return n}))}getContainerAtPosition(e){return new c.default(this,e)}readBlockHeader(e){return n(this,void 0,void 0,(function*(){const t=yield this.getSectionParsers(),{cramBlockHeader:r}=t,{size:n}=yield this.file.stat();if(e+r.maxLength>=n)return;const i=Buffer.allocUnsafe(r.maxLength);return yield this.file.read(i,0,r.maxLength,e),(0,p.parseItem)(i,r.parser,0,e)}))}_parseSection(e,t,r=e.maxLength,i){return n(this,void 0,void 0,(function*(){let n;if(i)n=i;else{const{size:e}=yield this.file.stat();if(t+r>=e)return;n=Buffer.allocUnsafe(r),yield this.file.read(n,0,r,t)}const o=(0,p.parseItem)(n,e.parser,0,t);if(o._size!==r)throw new f.CramMalformedError(`section read error: requested size ${r} does not equal parsed size ${o._size}`);return o}))}_uncompress(e,t,r){if(\"gzip\"===e)(0,o.unzip)(t).copy(r);else if(\"bzip2\"===e){const e=bzip2.array(t);let n,i=bzip2.header(e),o=0;do{n=bzip2.decompress(e,i),-1!=n&&(Buffer.from(n).copy(r,o),o+=n.length,i-=n.length)}while(-1!=n)}else if(\"rans\"===e)(0,h.default)(t,r);else if(\"rans4x16\"===e)u.default.r4x16_uncompress(t,r);else if(\"arith\"===e)u.default.arith_uncompress(t,r);else if(\"fqzcomp\"===e)u.default.fqzcomp_uncompress(t,r);else{if(\"tok3\"!==e)throw new f.CramUnimplementedError(`${e} decompression not yet implemented`);u.default.tok3_uncompress(t,r)}}readBlock(e){return n(this,void 0,void 0,(function*(){const{majorVersion:t}=yield this.getDefinition(),r=yield this.getSectionParsers(),n=yield this.readBlockHeader(e);if(void 0===n)return;const i=n._endPosition,o=Buffer.allocUnsafe(n.uncompressedSize),s=Object.assign(Object.assign({},n),{_endPosition:i,contentPosition:i,content:o});if(\"raw\"!==n.compressionMethod){const e=Buffer.allocUnsafe(n.compressedSize);yield this.read(e,0,n.compressedSize,i),this._uncompress(n.compressionMethod,e,o)}else yield this.read(o,0,n.uncompressedSize,i);if(t>=3){const t=yield this._parseSection(r.cramBlockCrc32,i+n.compressedSize);if(void 0===t)return;s.crc32=t.crc32,this.validateChecksums&&(yield this.checkCrc32(e,n._size+n.compressedSize,t.crc32,\"block data\")),s._endPosition=t._endPosition,s._size=s.compressedSize+r.cramBlockCrc32.maxLength}else s._endPosition=i+s.compressedSize,s._size=s.compressedSize;return s}))}}t.default=m,\"getDefinition getSectionParsers getSamHeader\".split(\" \").forEach((e=>(0,p.tinyMemoize)(m,e)))},8222:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0}),t.CramRecord=void 0;const i=n(r(5457));var o=r(8631);Object.defineProperty(t,\"CramRecord\",{enumerable:!0,get:function(){return n(o).default}}),t.default=i.default},8631:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0}),t.MateFlagsDecoder=t.CramFlagsDecoder=t.BamFlagsDecoder=t.MateFlags=t.CramFlags=t.BamFlags=void 0;const i=n(r(2615)),o={a:0,A:0,c:1,C:1,g:2,G:2,t:3,T:3,n:4,N:4};function s(e){const t={};for(const[r,n]of e)t[\"is\"+n]=e=>!!(e&r),t[\"set\"+n]=e=>e|r;return t}t.BamFlags=[[1,\"Paired\"],[2,\"ProperlyPaired\"],[4,\"SegmentUnmapped\"],[8,\"MateUnmapped\"],[16,\"ReverseComplemented\"],[32,\"MateReverseComplemented\"],[64,\"Read1\"],[128,\"Read2\"],[256,\"Secondary\"],[512,\"FailedQc\"],[1024,\"Duplicate\"],[2048,\"Supplementary\"]],t.CramFlags=[[1,\"PreservingQualityScores\"],[2,\"Detached\"],[4,\"WithMateDownstream\"],[8,\"DecodeSequenceAsStar\"]],t.MateFlags=[[1,\"OnNegativeStrand\"],[2,\"Unmapped\"]],t.BamFlagsDecoder=s(t.BamFlags),t.CramFlagsDecoder=s(t.CramFlags),t.MateFlagsDecoder=s(t.MateFlags),t.default=class{constructor({flags:e,cramFlags:t,readLength:r,mappingQuality:n,lengthOnRef:i,qualityScores:o,mateRecordNumber:s,readBases:a,readFeatures:f,mateToUse:h,readGroupId:l,readName:u,sequenceId:c,uniqueId:d,templateSize:p,alignmentStart:g,tags:m}){this.flags=e,this.cramFlags=t,this.readLength=r,this.mappingQuality=n,this.lengthOnRef=i,this.qualityScores=o,a&&(this.readBases=a),this.readGroupId=l,this.readName=u,this.sequenceId=c,this.uniqueId=d,this.templateSize=p,this.alignmentStart=g,this.tags=m,f&&(this.readFeatures=f),h&&(this.mate={flags:h.mateFlags,readName:h.mateReadName,sequenceId:h.mateSequenceId,alignmentStart:h.mateAlignmentStart}),s&&(this.mateRecordNumber=s)}isPaired(){return!!(this.flags&i.default.BAM_FPAIRED)}isProperlyPaired(){return!!(this.flags&i.default.BAM_FPROPER_PAIR)}isSegmentUnmapped(){return!!(this.flags&i.default.BAM_FUNMAP)}isMateUnmapped(){return!!(this.flags&i.default.BAM_FMUNMAP)}isReverseComplemented(){return!!(this.flags&i.default.BAM_FREVERSE)}isMateReverseComplemented(){return!!(this.flags&i.default.BAM_FMREVERSE)}isRead1(){return!!(this.flags&i.default.BAM_FREAD1)}isRead2(){return!!(this.flags&i.default.BAM_FREAD2)}isSecondary(){return!!(this.flags&i.default.BAM_FSECONDARY)}isFailedQc(){return!!(this.flags&i.default.BAM_FQCFAIL)}isDuplicate(){return!!(this.flags&i.default.BAM_FDUP)}isSupplementary(){return!!(this.flags&i.default.BAM_FSUPPLEMENTARY)}isDetached(){return!!(this.cramFlags&i.default.CRAM_FLAG_DETACHED)}hasMateDownStream(){return!!(this.cramFlags&i.default.CRAM_FLAG_MATE_DOWNSTREAM)}isPreservingQualityScores(){return!!(this.cramFlags&i.default.CRAM_FLAG_PRESERVE_QUAL_SCORES)}isUnknownBases(){return!!(this.cramFlags&i.default.CRAM_FLAG_NO_SEQ)}getReadBases(){if(!this.readBases&&this._refRegion){const e=function(e,t){if(!e.lengthOnRef&&!e.readLength)return null;if(e.isUnknownBases())return null;const r=e.alignmentStart-t.start;if(!e.readFeatures)return t.seq.substr(r,e.lengthOnRef).toUpperCase();let n=\"\",i=r,o=0;for(;n.length<e.readLength;)if(o<e.readFeatures.length){const r=e.readFeatures[o];if(\"Q\"===r.code||\"q\"===r.code)o+=1;else if(r.pos===n.length+1)if(o+=1,\"b\"===r.code){const e=r.data;n+=e,i+=e.length}else\"B\"===r.code?(n+=r.data[0],i+=1):\"X\"===r.code?(n+=r.sub,i+=1):\"I\"===r.code?n+=r.data:\"D\"===r.code?i+=r.data:\"i\"===r.code?n+=r.data:\"N\"===r.code?i+=r.data:\"S\"===r.code?n+=r.data:\"P\"===r.code||r.code;else if(o<e.readFeatures.length){const r=t.seq.substr(i,e.readFeatures[o].pos-n.length-1);n+=r,i+=r.length}}else{const r=t.seq.substr(i,e.readLength-n.length);n+=r,i+=r.length}return n.toUpperCase()}(this,this._refRegion);e&&(this.readBases=e)}return this.readBases}getPairOrientation(){if(!this.isSegmentUnmapped()&&this.isPaired()&&!this.isMateUnmapped()&&this.mate&&this.sequenceId===this.mate.sequenceId){const e=this.isReverseComplemented()?\"R\":\"F\",t=this.isMateReverseComplemented()?\"R\":\"F\";let r=\" \",n=\" \";this.isRead1()?(r=\"1\",n=\"2\"):this.isRead2()&&(r=\"2\",n=\"1\");const i=[];let o=this.templateLength||this.templateSize;if(void 0===o)throw new Error(\"One of templateSize and templateLength must be set\");return this.alignmentStart>this.mate.alignmentStart&&o>0&&(o=-o),o>0?(i[0]=e,i[1]=r,i[2]=t,i[3]=n):(i[2]=e,i[3]=r,i[0]=t,i[1]=n),i.join(\"\")}return null}addReferenceSequence(e,t){this.readFeatures&&this.readFeatures.forEach((r=>{\"X\"===r.code&&function(e,t,r,n){if(!t)return;const i=n.refPos-t.start,s=t.seq.charAt(i);s&&(n.ref=s);let a=o[s];void 0===a&&(a=4);const f=r.substitutionMatrix[a][n.data];f&&(n.sub=f)}(0,e,t,r)})),!this.readBases&&e.start<=this.alignmentStart&&e.end>=this.alignmentStart+(this.lengthOnRef||this.readLength)-1&&(this._refRegion=e)}toJSON(){const e={};return Object.keys(this).forEach((t=>{\"_\"!==t.charAt(0)&&(e[t]=this[t])})),e.readBases=this.getReadBases(),e}}},6141:(e,t,r)=>{\"use strict\";Object.defineProperty(t,\"__esModule\",{value:!0}),t.getSectionParsers=t.cramFileDefinition=t.isMappedSliceHeader=void 0;const n=r(9996),i=(new n.Parser).itf8(),o={parser:(new n.Parser).string(\"magic\",{length:4}).uint8(\"majorVersion\").uint8(\"minorVersion\").string(\"fileId\",{length:20,stripNull:!0}),maxLength:26};t.cramFileDefinition=o;const s={parser:(new n.Parser).uint8(\"compressionMethod\",{formatter:e=>{const t=[\"raw\",\"gzip\",\"bzip2\",\"lzma\",\"rans\",\"rans4x16\",\"arith\",\"fqzcomp\",\"tok3\"][e];if(!t)throw new Error(`compression method number ${e} not implemented`);return t}}).uint8(\"contentType\",{formatter:e=>{const t=[\"FILE_HEADER\",\"COMPRESSION_HEADER\",\"MAPPED_SLICE_HEADER\",\"UNMAPPED_SLICE_HEADER\",\"EXTERNAL_DATA\",\"CORE_DATA\"][e];if(!t)throw new Error(`invalid block content type id ${e}`);return t}}).itf8(\"contentId\").itf8(\"compressedSize\").itf8(\"uncompressedSize\"),maxLength:17},a={parser:(new n.Parser).uint32(\"crc32\"),maxLength:4},f=(new n.Parser).itf8(\"size\").buffer(\"ents\",{length:\"size\",formatter:e=>{function t(t,r){const n=e.toString(\"utf8\",t,r),i=[];for(let e=0;e<n.length;e+=3)i.push(n.substr(e,3));return i}var r,n=[],i=0;for(r=0;r<e.length;r+=1)e[r]||(n.push(t(i,r)),i=r+1);return r>i&&n.push(t(i,r)),n}}),h=(new n.Parser).uint8(null,{formatter:e=>!!e}),l=(new n.Parser).itf8(\"mapSize\").itf8(\"mapCount\").array(\"ents\",{length:\"mapCount\",type:(new n.Parser).string(\"key\",{length:2,stripNull:!1}).choice(\"value\",{tag:\"key\",choices:{MI:h,UI:h,PI:h,RN:h,AP:h,RR:h,SM:(new n.Parser).array(null,{type:\"uint8\",length:5}),TD:(new n.Parser).nest(null,{type:f,formatter:e=>e.ents})}})});function u(e){const t={};for(let r=0;r<e.ents.length;r+=1){const{key:n,value:i}=e.ents[r];t[n]&&console.warn(`duplicate key ${n} in map`),t[n]=i}return t}const c={cramFileDefinition:o,cramBlockHeader:s,cramBlockCrc32:a};t.isMappedSliceHeader=function(e){return\"number\"==typeof e.refSeqId};const d={cramUnmappedSliceHeader(e){let t=0,r=(new n.Parser).itf8(\"numRecords\");return t+=5,e>=3?(r=r.ltf8(\"recordCounter\"),t+=9):2===e&&(r=r.itf8(\"recordCounter\"),t+=5),r=r.itf8(\"numBlocks\").itf8(\"numContentIds\").array(\"contentIds\",{type:i,length:\"numContentIds\"}),t+=10,e>=2&&(r=r.array(\"md5\",{type:\"uint8\",length:16}),t+=16),{parser:r,maxLength:e=>t+5*e}},cramMappedSliceHeader(e){let t=(new n.Parser).itf8(\"refSeqId\").itf8(\"refSeqStart\").itf8(\"refSeqSpan\").itf8(\"numRecords\"),r=20;return e>=3?(t=t.ltf8(\"recordCounter\"),r+=9):2===e&&(t=t.itf8(\"recordCounter\"),r+=5),t=t.itf8(\"numBlocks\").itf8(\"numContentIds\").array(\"contentIds\",{type:i,length:\"numContentIds\"}).itf8(\"refBaseBlockId\"),r+=15,e>=2&&(t=t.array(\"md5\",{type:\"uint8\",length:16}),r+=16),{parser:t,maxLength:e=>r+5*e}},cramEncoding:e=>({parser:(new n.Parser).namely(\"cramEncoding\").itf8(\"codecId\").itf8(\"parametersBytes\").choice(\"parameters\",{tag:\"codecId\",choices:{0:new n.Parser,1:(new n.Parser).itf8(\"blockContentId\"),2:(new n.Parser).itf8(\"offset\").itf8(\"M\"),3:n.Parser.start().itf8(\"numCodes\").array(\"symbols\",{length:\"numCodes\",type:i}).itf8(\"numLengths\").array(\"bitLengths\",{length:\"numLengths\",type:i}),4:n.Parser.start().nest(\"lengthsEncoding\",{type:\"cramEncoding\"}).nest(\"valuesEncoding\",{type:\"cramEncoding\"}),5:(new n.Parser).uint8(\"stopByte\").itf8(\"blockContentId\"),6:(new n.Parser).itf8(\"offset\").itf8(\"length\"),7:(new n.Parser).itf8(\"offset\").itf8(\"K\"),8:(new n.Parser).itf8(\"offset\").itf8(\"log2m\"),9:(new n.Parser).itf8(\"offset\")}})}),cramDataSeriesEncodingMap(e){return(new n.Parser).itf8(\"mapSize\").itf8(\"mapCount\").array(\"ents\",{length:\"mapCount\",type:(new n.Parser).string(\"key\",{length:2,stripNull:!1}).nest(\"value\",{type:this.cramEncoding(e).parser})})},cramTagEncodingMap(e){return(new n.Parser).itf8(\"mapSize\").itf8(\"mapCount\").array(\"ents\",{length:\"mapCount\",type:(new n.Parser).itf8(\"key\",{formatter:e=>String.fromCharCode(e>>16&255)+String.fromCharCode(e>>8&255)+String.fromCharCode(255&e)}).nest(\"value\",{type:this.cramEncoding(e).parser})})},cramCompressionHeader(e){let t=new n.Parser;return t=t.nest(\"preservation\",{type:l,formatter:u}).nest(\"dataSeriesEncoding\",{type:this.cramDataSeriesEncodingMap(e),formatter:u}).nest(\"tagEncoding\",{type:this.cramTagEncodingMap(e),formatter:u}),{parser:t}},cramContainerHeader1(e){let t=(new n.Parser).int32(\"length\").itf8(\"refSeqId\").itf8(\"refSeqStart\").itf8(\"alignmentSpan\").itf8(\"numRecords\"),r=24;return e>=3?(t=t.ltf8(\"recordCounter\"),r+=9):2===e&&(t=t.itf8(\"recordCounter\"),r+=5),e>1&&(t=t.ltf8(\"numBases\"),r+=9),t=t.itf8(\"numBlocks\").itf8(\"numLandmarks\"),r+=10,{parser:t,maxLength:r}},cramContainerHeader2(e){let t=(new n.Parser).itf8(\"numLandmarks\").array(\"landmarks\",{type:(new n.Parser).itf8(),length:\"numLandmarks\"}),r=0;return e>=3&&(t=t.uint32(\"crc32\"),r=4),{parser:t,maxLength:e=>5+5*e+r}}};t.getSectionParsers=function(e){const t=Object.assign({},c);return Object.keys(d).forEach((r=>{t[r]=d[r](e)})),t}},3757:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const i=n(r(3720)),o=r(8577),s=r(8631),a=r(6141);function f(e){let t=\"\";for(let r=0;r<e.length&&0!==e[r];r++)t+=String.fromCharCode(e[r]);return t}function h(e,t){if(\"Z\"===e)return f(t);if(\"A\"===e)return String.fromCharCode(t[0]);if(\"I\"===e)return i.default.fromBytesLE(t).toNumber();if(\"i\"===e)return new Int32Array(t.buffer)[0];if(\"s\"===e)return new Int16Array(t.buffer)[0];if(\"S\"===e)return new Uint16Array(t.buffer)[0];if(\"c\"===e)return new Int8Array(t.buffer)[0];if(\"C\"===e)return t[0];if(\"f\"===e)return new Float32Array(t.buffer)[0];if(\"H\"===e)return Number.parseInt(f(t).replace(/^0x/,\"\"),16);if(\"B\"===e)return function(e){const t=String.fromCharCode(e[0]),r=Int32Array.from(e.slice(1))[0],n=new Array(r);if(e=e.slice(5),\"c\"===t){const t=new Int8Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e]}else if(\"C\"===t){const t=new Uint8Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e]}else if(\"s\"===t){const t=new Int16Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e]}else if(\"S\"===t){const t=new Uint16Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e]}else if(\"i\"===t){const t=new Int32Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e]}else if(\"I\"===t){const t=new Uint32Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e]}else{if(\"f\"!==t)throw new Error(\"unknown type: \"+t);{const t=new Float32Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e]}}return n}(t);throw new o.CramMalformedError(`Unrecognized tag type ${e}`)}t.default=function(e,t,r,n,i,l,u,c,d){let p=t(\"BF\");const g=t(\"CF\");if(!(0,a.isMappedSliceHeader)(n.parsedContent))throw new Error;let m;m=c>1&&-2===n.parsedContent.refSeqId?t(\"RI\"):n.parsedContent.refSeqId;const y=t(\"RL\");let b=t(\"AP\");r.APdelta&&(b+=u.lastAlignmentStart),u.lastAlignmentStart=b;const v=t(\"RG\");let w,_,B,E;if(r.readNamesIncluded&&(w=f(t(\"RN\"))),s.CramFlagsDecoder.isDetached(g)){const e=t(\"MF\");let n;r.readNamesIncluded||(n=f(t(\"RN\")),w=n);const i=t(\"NS\"),o=t(\"NP\");(e||i>-1)&&(_={mateFlags:e,mateSequenceId:i,mateAlignmentStart:o,mateReadName:n}),B=t(\"TS\"),s.MateFlagsDecoder.isUnmapped(e)&&(p=s.BamFlagsDecoder.setMateUnmapped(p)),s.MateFlagsDecoder.isOnNegativeStrand(e)&&(p=s.BamFlagsDecoder.setMateReverseComplemented(p))}else s.CramFlagsDecoder.isWithMateDownstream(g)&&(E=t(\"NF\")+d+1);const S=t(\"TL\");if(S<0)throw new o.CramMalformedError(\"invalid TL index\");const A={},C=r.getTagNames(S),R=C.length;for(let t=0;t<R;t+=1){const n=C[t],s=n.substr(0,2),a=n.substr(2,1),f=r.getCodecForTag(n);if(!f)throw new o.CramMalformedError(`no codec defined for auxiliary tag ${n}`);const c=f.decode(e,i,l,u);A[s]=h(a,c)}let k,x,I,M,F;if(s.BamFlagsDecoder.isSegmentUnmapped(p))if(s.CramFlagsDecoder.isDecodeSequenceAsStar(g))F=null,M=null;else{const e=new Array(y);for(let r=0;r<e.length;r+=1)e[r]=t(\"BA\");if(F=String.fromCharCode(...e),s.CramFlagsDecoder.isPreservingQualityScores(g)){M=new Array(y);for(let r=0;r<e.length;r+=1)M[r]=t(\"QS\")}}else{const e=t(\"FN\");if(e&&(k=function(e,t,r,n,i){let s=0,a=e-1;const f=new Array(t);function h([e,t]){const n=r(t);if(\"character\"===e)return String.fromCharCode(n);if(\"string\"===e){let e=\"\";for(let t=0;t<n.byteLength;t++)e+=String.fromCharCode(n[t]);return e}return\"numArray\"===e?n.toArray():n}for(let e=0;e<t;e+=1){const t=String.fromCharCode(r(\"FC\")),n=r(\"FP\"),l={B:[\"character\",\"BA\"],S:[\"string\",i>1?\"SC\":\"IN\"],X:[\"number\",\"BS\"],D:[\"number\",\"DL\"],I:[\"string\",\"IN\"],i:[\"character\",\"BA\"],b:[\"string\",\"BB\"],q:[\"numArray\",\"QQ\"],Q:[\"number\",\"QS\"],H:[\"number\",\"HC\"],P:[\"number\",\"PD\"],N:[\"number\",\"RS\"]}[t];if(!l)throw new o.CramMalformedError(`invalid read feature code \"${t}\"`);let u=h(l);const c={B:[\"number\",\"QS\"]}[t];c&&(u=[u,h(c)]),s+=n;const d=s;a+=n;const p=a;\"D\"===t||\"N\"===t?a+=u:\"I\"===t||\"S\"===t?a-=u.length:\"i\"===t&&(a-=1),f[e]={code:t,pos:d,refPos:p,data:u}}return f}(b,e,t,0,c)),x=y,k)for(const{code:e,data:t}of k)\"D\"===e||\"N\"===e?x+=t:\"I\"===e||\"S\"===e?x-=t.length:\"i\"===e&&(x-=1);if(Number.isNaN(x)&&(console.warn(`${w||`${m}:${b}`} record has invalid read features`),x=y),I=t(\"MQ\"),s.CramFlagsDecoder.isPreservingQualityScores(g)){M=new Array(y);for(let e=0;e<M.length;e++)M[e]=t(\"QS\")}}return{readLength:y,sequenceId:m,cramFlags:g,flags:p,alignmentStart:b,readGroupId:v,readName:w,mateToUse:_,templateSize:B,mateRecordNumber:E,readFeatures:k,lengthOnRef:x,mappingQuality:I,qualityScores:M,readBases:F,tags:A}}},6601:function(e,t,r){\"use strict\";var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e))}catch(e){o(e)}}function a(e){try{f(n.throw(e))}catch(e){o(e)}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t)}))).then(s,a)}f((n=n.apply(e,t||[])).next())}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const o=r(8577),s=r(9488),a=i(r(2615)),f=i(r(3757)),h=i(r(8631)),l=r(6141),u=r(1074);function c(e,t,r,n){if(!n)throw new o.CramMalformedError(\"could not resolve intra-slice mate pairs, file seems truncated or malformed\");const i=!!(n.mate||void 0!==n.mateRecordNumber&&n.mateRecordNumber!==t);r.readName||(r.readName=String(r.uniqueId),n.readName=r.readName),r.mate={sequenceId:n.sequenceId,alignmentStart:n.alignmentStart,uniqueId:n.uniqueId},n.readName&&(r.mate.readName=n.readName),n.mate||void 0!==n.mateRecordNumber||(n.mate={sequenceId:r.sequenceId,alignmentStart:r.alignmentStart,uniqueId:r.uniqueId},r.readName&&(n.mate.readName=r.readName)),r.flags|=a.default.BAM_FPAIRED,n.flags&a.default.BAM_FUNMAP&&(r.flags|=a.default.BAM_FMUNMAP),r.flags&a.default.BAM_FUNMAP&&(n.flags|=a.default.BAM_FMUNMAP),n.flags&a.default.BAM_FREVERSE&&(r.flags|=a.default.BAM_FMREVERSE),r.flags&a.default.BAM_FREVERSE&&(n.flags|=a.default.BAM_FMREVERSE),void 0===r.templateLength&&(i?function(e,t,r){const n=function t(r){const n=[r];if(void 0!==r.mateRecordNumber&&r.mateRecordNumber>=0){const i=e[r.mateRecordNumber];if(!i)throw new o.CramMalformedError(\"intra-slice mate record not found, this file seems malformed\");n.push(...t(i))}return n}(r),i=n.map((e=>e.alignmentStart)),s=n.map((e=>e.alignmentStart+e.readLength-1)),a=Math.max(...s)-Math.min(...i)+1;a>=0&&n.forEach((e=>{if(void 0!==e.templateLength)throw new o.CramMalformedError(\"mate pair group has some members that have template lengths already, this file seems malformed\");e.templateLength=a}))}(e,0,r):function(e,t){const r=Math.min(e.alignmentStart,t.alignmentStart),n=Math.max(e.alignmentStart+e.readLength-1,t.alignmentStart+t.readLength-1)-r+1;e.templateLength=n,t.templateLength=n}(r,n)),delete r.mateRecordNumber}class d{constructor(e,t,r){this.container=e,this.containerPosition=t,this.file=e.file}getHeader(){return n(this,void 0,void 0,(function*(){const e=yield this.file.getSectionParsers(),t=yield this.container.getHeader(),r=yield this.file.readBlock(t._endPosition+this.containerPosition);if(void 0===r)throw new Error;if(\"MAPPED_SLICE_HEADER\"===r.contentType){const n=(0,s.parseItem)(r.content,e.cramMappedSliceHeader.parser,0,t._endPosition);return Object.assign(Object.assign({},r),{parsedContent:n})}if(\"UNMAPPED_SLICE_HEADER\"===r.contentType){const n=(0,s.parseItem)(r.content,e.cramUnmappedSliceHeader.parser,0,t._endPosition);return Object.assign(Object.assign({},r),{parsedContent:n})}throw new o.CramMalformedError(`error reading slice header block, invalid content type ${r.contentType}`)}))}getBlocks(){return n(this,void 0,void 0,(function*(){const e=yield this.getHeader();let t=e._endPosition;const r=new Array(e.parsedContent.numBlocks);for(let e=0;e<r.length;e+=1){const n=yield this.file.readBlock(t);if(void 0===n)throw new Error;r[e]=n,t=r[e]._endPosition}return r}))}getCoreDataBlock(){return n(this,void 0,void 0,(function*(){return(yield this.getBlocks())[0]}))}_getBlocksContentIdIndex(){return n(this,void 0,void 0,(function*(){const e=yield this.getBlocks(),t={};return e.forEach((e=>{\"EXTERNAL_DATA\"===e.contentType&&(t[e.contentId]=e)})),t}))}getBlockByContentId(e){return n(this,void 0,void 0,(function*(){return(yield this._getBlocksContentIdIndex())[e]}))}getReferenceRegion(){return n(this,void 0,void 0,(function*(){const e=(yield this.getHeader()).parsedContent;if(!(0,l.isMappedSliceHeader)(e))throw new Error;if(e.refSeqId<0)return;const t=yield this.container.getCompressionScheme();if(void 0===t)throw new Error;if(e.refBaseBlockId>=0){const t=yield this.getBlockByContentId(e.refBaseBlockId);if(!t)throw new o.CramMalformedError(\"embedded reference specified, but reference block does not exist\");return{seq:t.data.toString(\"utf8\"),start:e.refSeqStart,end:e.refSeqStart+e.refSeqSpan-1,span:e.refSeqSpan}}if(t.referenceRequired||this.file.fetchReferenceSequenceCallback){if(!this.file.fetchReferenceSequenceCallback)throw new Error(\"reference sequence not embedded, and seqFetch callback not provided, cannot fetch reference sequence\");const t=yield this.file.fetchReferenceSequenceCallback(e.refSeqId,e.refSeqStart,e.refSeqStart+e.refSeqSpan-1);if(t.length!==e.refSeqSpan)throw new o.CramArgumentError(\"seqFetch callback returned a reference sequence of the wrong length\");return{seq:t,start:e.refSeqStart,end:e.refSeqStart+e.refSeqSpan-1,span:e.refSeqSpan}}}))}getAllRecords(){return this.getRecords((()=>!0))}_fetchRecords(){return n(this,void 0,void 0,(function*(){const{majorVersion:e}=yield this.file.getDefinition(),t=yield this.container.getCompressionScheme();if(void 0===t)throw new Error;const r=yield this.getHeader();if(void 0===r)throw new Error;const n=yield this._getBlocksContentIdIndex();if(e>1&&this.file.options.checkSequenceMD5&&(0,l.isMappedSliceHeader)(r.parsedContent)&&r.parsedContent.refSeqId>=0&&\"0000000000000000\"!==r.parsedContent.md5.join(\"\")){const e=yield this.getReferenceRegion();if(e){const{seq:t,start:n,end:i}=e,a=(0,s.sequenceMD5)(t),f=r.parsedContent.md5.map((e=>(e<16?\"0\":\"\")+e.toString(16))).join(\"\");if(a!==f)throw new o.CramMalformedError(`MD5 checksum reference mismatch for ref ${r.parsedContent.refSeqId} pos ${n}..${i}. recorded MD5: ${f}, calculated MD5: ${a}`)}}const i=yield this.getCoreDataBlock(),a={lastAlignmentStart:(0,l.isMappedSliceHeader)(r.parsedContent)?r.parsedContent.refSeqStart:0,coreBlock:{bitPosition:7,bytePosition:0},externalBlocks:{map:new Map,getCursor(e){let t=this.map.get(e);return void 0===t&&(t={bitPosition:7,bytePosition:0},this.map.set(e,t)),t}}},d=e=>{const r=t.getCodecForDataSeries(e);if(!r)throw new o.CramMalformedError(`no codec defined for ${e} data series`);return r.decode(this,i,n,a)};let p=new Array(r.parsedContent.numRecords);for(let o=0;o<p.length;o+=1)try{const s=(0,f.default)(this,d,t,r,i,n,a,e,o);p[o]=new h.default(Object.assign(Object.assign({},s),{uniqueId:r.contentPosition+r.parsedContent.recordCounter+o+1}))}catch(e){if(e instanceof u.CramBufferOverrunError){console.warn(\"read attempted beyond end of buffer, file seems truncated.\"),p=p.filter((e=>!!e));break}throw e}for(let e=0;e<p.length;e+=1){const{mateRecordNumber:t}=p[e];void 0!==t&&t>=0&&c(p,e,p[e],p[t])}return p}))}getRecords(e){return n(this,void 0,void 0,(function*(){const t=this.container.filePosition+this.containerPosition;let r=this.file.featureCache.get(t.toString());r||(r=this._fetchRecords(),this.file.featureCache.set(t.toString(),r));const i=(yield r).filter(e);if(i.length&&this.file.fetchReferenceSequenceCallback){const e=yield this.getHeader();if((0,l.isMappedSliceHeader)(e.parsedContent)&&(e.parsedContent.refSeqId>=0||-2===e.parsedContent.refSeqId)){const t=e.parsedContent.refSeqId>=0?e.parsedContent.refSeqId:void 0,r=yield this.container.getCompressionScheme();if(void 0===r)throw new Error;const o={};for(let e=0;e<i.length;e+=1){const r=void 0!==t?t:i[e].sequenceId;let n=o[r];n||(n={id:r,start:i[e].alignmentStart,end:-1/0,seq:null},o[r]=n);const s=i[e].alignmentStart+(i[e].lengthOnRef||i[e].readLength)-1;s>n.end&&(n.end=s),i[e].alignmentStart<n.start&&(n.start=i[e].alignmentStart)}yield Promise.all(Object.values(o).map((e=>n(this,void 0,void 0,(function*(){-1!==e.id&&e.start<=e.end&&(e.seq=yield this.file.fetchReferenceSequenceCallback(e.id,e.start,e.end))})))));for(let e=0;e<i.length;e+=1){const n=o[void 0!==t?t:i[e].sequenceId];if(n&&n.seq){const t=n.seq;i[e].addReferenceSequence(Object.assign(Object.assign({},n),{seq:t}),r)}}}}return i}))}}t.default=d,\"getHeader getBlocks _getBlocksContentIdIndex\".split(\" \").forEach((e=>(0,s.tinyMemoize)(d,e)))},9488:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0}),t.sequenceMD5=t.tinyMemoize=t.parseItem=t.parseItf8=t.itf8Size=void 0;const i=n(r(2568)),o=r(1074);t.itf8Size=function(e){return-128&e?-16384&e?-2097152&e?-268435456&e?5:4:3:2:1},t.parseItf8=function(e,t){let r=t;const n=e[r];let i;if(n<128?(i=n,r+=1):n<192?(i=16383&(n<<8|e[r+1]),r+=2):n<224?(i=2097151&(n<<16|e[r+1]<<8|e[r+2]),r+=3):n<240?(i=268435455&(n<<24|e[r+1]<<16|e[r+2]<<8|e[r+3]),r+=4):(i=(15&n)<<28|e[r+1]<<20|e[r+2]<<12|e[r+3]<<4|15&e[r+4],r+=5),r>e.length)throw new o.CramBufferOverrunError(\"Attempted to read beyond end of buffer; this file seems truncated.\");return[i,r-t]},t.parseItem=function(e,t,r=0,n=0){const{offset:i,result:o}=t.parse(e);return Object.assign(Object.assign({},o),{_endPosition:i+n,_size:i-r})},t.tinyMemoize=function(e,t){const r=e.prototype[t],n=`_memo_${t}`;e.prototype[t]=function(){if(!(n in this)){const e=r.call(this);this[n]=e,Promise.resolve(e).catch((()=>{delete this[n]}))}return this[n]}},t.sequenceMD5=function(e){return(0,i.default)(e.toUpperCase().replace(/[^\\x21-\\x7e]/g,\"\"))}},8577:(e,t)=>{\"use strict\";Object.defineProperty(t,\"__esModule\",{value:!0}),t.CramArgumentError=t.CramSizeLimitError=t.CramMalformedError=t.CramUnimplementedError=t.CramError=void 0;class r extends Error{}t.CramError=r;class n extends Error{}t.CramUnimplementedError=n,t.CramMalformedError=class extends r{},t.CramSizeLimitError=class extends r{},t.CramArgumentError=class extends r{}},5590:function(e,t,r){\"use strict\";var n=this&&this.__createBinding||(Object.create?function(e,t,r,n){void 0===n&&(n=r);var i=Object.getOwnPropertyDescriptor(t,r);i&&!(\"get\"in i?!t.__esModule:i.writable||i.configurable)||(i={enumerable:!0,get:function(){return t[r]}}),Object.defineProperty(e,n,i)}:function(e,t,r,n){void 0===n&&(n=r),e[n]=t[r]}),i=this&&this.__setModuleDefault||(Object.create?function(e,t){Object.defineProperty(e,\"default\",{enumerable:!0,value:t})}:function(e,t){e.default=t}),o=this&&this.__importStar||function(e){if(e&&e.__esModule)return e;var t={};if(null!=e)for(var r in e)\"default\"!==r&&Object.prototype.hasOwnProperty.call(e,r)&&n(t,e,r);return i(t,e),t},s=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0}),t.CramRecord=t.CraiIndex=t.IndexedCramFile=t.CramFile=void 0;const a=o(r(8222));t.CramFile=a.default,Object.defineProperty(t,\"CramRecord\",{enumerable:!0,get:function(){return a.CramRecord}});const f=s(r(946));t.IndexedCramFile=f.default;const h=s(r(368));t.CraiIndex=h.default},946:function(e,t,r){\"use strict\";var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e))}catch(e){o(e)}}function a(e){try{f(n.throw(e))}catch(e){o(e)}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t)}))).then(s,a)}f((n=n.apply(e,t||[])).next())}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const o=r(8577),s=i(r(8222));t.default=class{constructor(e){if(e.cram?this.cram=e.cram:this.cram=new s.default({url:e.cramUrl,path:e.cramPath,filehandle:e.cramFilehandle,seqFetch:e.seqFetch,checkSequenceMD5:e.checkSequenceMD5,cacheSize:e.cacheSize}),!(this.cram instanceof s.default))throw new Error(\"invalid arguments: no cramfile\");if(this.index=e.index,!this.index.getEntriesForRange)throw new Error(\"invalid arguments: not an index\");this.fetchSizeLimit=e.fetchSizeLimit||3e6}getRecordsForRange(e,t,r,i={}){return n(this,void 0,void 0,(function*(){if(i.viewAsPairs=i.viewAsPairs||!1,i.pairAcrossChr=i.pairAcrossChr||!1,i.maxInsertSize=i.maxInsertSize||2e5,\"string\"==typeof e)throw new o.CramUnimplementedError(\"string sequence names not yet supported\");const n=e,s=yield this.index.getEntriesForRange(n,t,r),a=s.map((e=>e.sliceBytes)).reduce(((e,t)=>e+t),0);if(a>this.fetchSizeLimit)throw new o.CramSizeLimitError(`data size of ${a.toLocaleString()} bytes exceeded fetch size limit of ${this.fetchSizeLimit.toLocaleString()} bytes`);const f=n=>n.sequenceId===e&&n.alignmentStart<=r&&void 0!==n.lengthOnRef&&n.alignmentStart+n.lengthOnRef-1>=t,h=yield Promise.all(s.map((e=>this.getRecordsInSlice(e,f))));let l=Array.prototype.concat(...h);if(i.viewAsPairs){const e={},t={};for(let r=0;r<l.length;r+=1){const n=l[r].readName;if(void 0===n)throw new Error;const i=l[r].uniqueId;e[n]||(e[n]=0),e[n]+=1,t[i]=1}const r={};Object.entries(e).forEach((([e,t])=>{1===t&&(r[e]=!0)}));const o=[];for(let e=0;e<l.length;e+=1){const t=l[e],s=t.readName;if(void 0===s)throw new Error;if(r[s]&&t.mate&&(t.mate.sequenceId===n||i.pairAcrossChr)&&Math.abs(t.alignmentStart-t.mate.alignmentStart)<i.maxInsertSize){const e=this.index.getEntriesForRange(t.mate.sequenceId,t.mate.alignmentStart,t.mate.alignmentStart+1);o.push(e)}}const s=yield Promise.all(o);let a=[];for(let e=0;e<s.length;e+=1)a.push(...s[e]);a=a.sort(((e,t)=>e.toString().localeCompare(t.toString()))).filter(((e,t,r)=>!t||e.toString()!==r[t-1].toString()));const f=[],h=[],u=a.map((e=>e.sliceBytes)).reduce(((e,t)=>e+t),0);if(u>this.fetchSizeLimit)throw new Error(`mate data size of ${u.toLocaleString()} bytes exceeded fetch size limit of ${this.fetchSizeLimit.toLocaleString()} bytes`);a.forEach((e=>{let n=this.cram.featureCache.get(e.toString());n||(n=this.getRecordsInSlice(e,(()=>!0)),this.cram.featureCache.set(e.toString(),n)),f.push(n);const i=n.then((e=>{const n=[];for(let i=0;i<e.length;i+=1){const o=e[i];if(void 0===o.readName)throw new Error;r[o.readName]&&!t[o.uniqueId]&&n.push(o)}return n}));h.push(i)}));const c=yield Promise.all(h);if(c.length){const e=c.reduce(((e,t)=>e.concat(t)));l=l.concat(e)}}return l}))}getRecordsInSlice({containerStart:e,sliceStart:t,sliceBytes:r},n){return this.cram.getContainerAtPosition(e).getSlice(t,r).getRecords(n)}hasDataForReferenceSequence(e){return this.index.hasDataForReferenceSequence(e)}}},3427:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0}),t.open=t.fromUrl=t.RemoteFile=t.LocalFile=void 0;const i=n(r(8575)),o=r(4319),s=r(2949);function a(e){const{protocol:t,pathname:r}=i.default.parse(e);return\"file:\"===t?new s.LocalFile(unescape((0,o.ensureNotNullish)(r))):new s.RemoteFile(e)}Object.defineProperty(t,\"LocalFile\",{enumerable:!0,get:function(){return s.LocalFile}}),Object.defineProperty(t,\"RemoteFile\",{enumerable:!0,get:function(){return s.RemoteFile}}),t.fromUrl=a,t.open=function(e,t,r){if(r)return r;if(e)return a(e);if(t)return new s.LocalFile(t);throw new Error(\"no url, path, or filehandle provided, cannot open\")}},5702:(e,t)=>{\"use strict\";Object.defineProperty(t,\"__esModule\",{value:!0}),t.RANS_BYTE_L=t.TOTFREQ=t.TF_SHIFT=void 0,t.TF_SHIFT=12,t.TOTFREQ=4096,t.RANS_BYTE_L=1<<23},6484:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const i=r(8577),o=r(5702),s=n(r(7634));t.default=function(e,t,r,n){let a=e.getInt(),f=e.getInt(),h=e.getInt(),l=e.getInt();const u=n.remaining(),c=-4&u;for(let i=0;i<c;i+=4){const u=t.R[s.default.get(a,o.TF_SHIFT)],c=t.R[s.default.get(f,o.TF_SHIFT)],d=t.R[s.default.get(h,o.TF_SHIFT)],p=t.R[s.default.get(l,o.TF_SHIFT)];n.putAt(i,u),n.putAt(i+1,c),n.putAt(i+2,d),n.putAt(i+3,p),a=s.default.advanceSymbolStep(a,r[255&u],o.TF_SHIFT),f=s.default.advanceSymbolStep(f,r[255&c],o.TF_SHIFT),h=s.default.advanceSymbolStep(h,r[255&d],o.TF_SHIFT),l=s.default.advanceSymbolStep(l,r[255&p],o.TF_SHIFT),a=s.default.renormalize(a,e),f=s.default.renormalize(f,e),h=s.default.renormalize(h,e),l=s.default.renormalize(l,e)}let d;switch(n.setPosition(c),3&u){case 0:break;case 1:d=t.R[s.default.get(a,o.TF_SHIFT)],s.default.advanceSymbol(a,e,r[255&d],o.TF_SHIFT),n.put(d);break;case 2:d=t.R[s.default.get(a,o.TF_SHIFT)],s.default.advanceSymbol(a,e,r[255&d],o.TF_SHIFT),n.put(d),d=t.R[s.default.get(f,o.TF_SHIFT)],s.default.advanceSymbol(f,e,r[255&d],o.TF_SHIFT),n.put(d);break;case 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0);\"),e.pushCode(\"{0} = buffer.toString('{1}', {2}, offset - 1);\",t,this.options.encoding,r)):this.options.greedy&&(e.pushCode(\"var {0} = offset;\",r),e.pushCode(\"while(buffer.length > offset++);\"),e.pushCode(\"{0} = buffer.toString('{1}', {2}, offset);\",t,this.options.encoding,r)),this.options.stripNull&&e.pushCode(\"{0} = {0}.replace(/\\\\x00+$/g, '')\",t)},d.prototype.generateBuffer=function(e){\"eof\"===this.options.readUntil?e.pushCode(\"{0} = buffer.slice(offset);\",e.generateVariable(this.varName)):(e.pushCode(\"{0} = buffer.slice(offset, offset + {1});\",e.generateVariable(this.varName),e.generateOption(this.options.length)),e.pushCode(\"offset += {0};\",e.generateOption(this.options.length))),this.options.clone&&e.pushCode(\"{0} = Buffer.from({0});\",e.generateVariable(this.varName))},d.prototype.generateArray=function(e){var t=e.generateOption(this.options.length),r=e.generateOption(this.options.lengthInBytes),n=this.options.type,i=e.generateTmpVariable(),o=e.generateVariable(this.varName),s=e.generateTmpVariable(),a=this.options.key,u=\"string\"==typeof a;if(u?e.pushCode(\"{0} = {};\",o):e.pushCode(\"{0} = [];\",o),\"function\"==typeof this.options.readUntil?e.pushCode(\"do {\"):\"eof\"===this.options.readUntil?e.pushCode(\"for (var {0} = 0; offset < buffer.length; {0}++) {\",i):void 0!==r?e.pushCode(\"for (var {0} = offset; offset - {0} < {1}; ) {\",i,r):e.pushCode(\"for (var {0} = 0; {0} < {1}; {0}++) {\",i,t),\"string\"==typeof n)if(h[n]){var p=e.generateTmpVariable();e.pushCode(\"var {0} = {1}(offset);\",p,l+n),e.pushCode(\"var {0} = {1}.result; offset = {1}.offset;\",s,p),n!==this.alias&&e.addReference(n)}else e.pushCode(\"var {0} = buffer.read{1}(offset);\",s,c[n]),e.pushCode(\"offset += {0};\",f[c[n]]);else n instanceof d&&(e.pushCode(\"var {0} = {};\",s),e.pushScope(s),n.generate(e),e.popScope());u?e.pushCode(\"{0}[{2}.{1}] = {2};\",o,a,s):e.pushCode(\"{0}.push({1});\",o,s),e.pushCode(\"}\"),\"function\"==typeof this.options.readUntil&&e.pushCode(\" while (!({0}).call(this, {1}, buffer.slice(offset)));\",this.options.readUntil,s)},d.prototype.generateChoiceCase=function(e,t,r){if(\"string\"==typeof r)if(h[r]){var n=e.generateTmpVariable();e.pushCode(\"var {0} = {1}(offset);\",n,l+r),e.pushCode(\"{0} = {1}.result; offset = {1}.offset;\",e.generateVariable(this.varName),n),r!==this.alias&&e.addReference(r)}else e.pushCode(\"{0} = buffer.read{1}(offset);\",e.generateVariable(this.varName),c[r]),e.pushCode(\"offset += {0};\",f[c[r]]);else r instanceof d&&(e.pushPath(t),r.generate(e),e.popPath(t))},d.prototype.generateChoice=function(e){var t=e.generateOption(this.options.tag);this.varName&&e.pushCode(\"{0} = {};\",e.generateVariable(this.varName)),e.pushCode(\"switch({0}) {\",t),Object.keys(this.options.choices).forEach((function(t){var r=this.options.choices[t];Number.isNaN(parseInt(t,10))?e.pushCode(\"case '{0}':\",t):e.pushCode(\"case {0}:\",t),this.generateChoiceCase(e,this.varName,r),e.pushCode(\"break;\")}),this),e.pushCode(\"default:\"),this.options.defaultChoice?this.generateChoiceCase(e,this.varName,this.options.defaultChoice):e.generateError('\"Met undefined tag value \" + {0} + \" at choice\"',t),e.pushCode(\"}\")},d.prototype.generateNest=function(e){var t=e.generateVariable(this.varName);if(this.options.type instanceof d)this.varName&&e.pushCode(\"{0} = {};\",t),e.pushPath(this.varName),this.options.type.generate(e),e.popPath(this.varName);else if(h[this.options.type]){var r=e.generateTmpVariable();e.pushCode(\"var {0} = {1}(offset);\",r,l+this.options.type),e.pushCode(\"{0} = {1}.result; offset = {1}.offset;\",t,r),this.options.type!==this.alias&&e.addReference(this.options.type)}},d.prototype.generateFormatter=function(e,t,r){\"function\"==typeof r&&e.pushCode(\"{0} = ({1}).call(this, {0});\",t,r)},d.prototype.isInteger=function(){return!!this.type.match(/U?Int[8|16|32][BE|LE]?|Bit\\d+/)},d.prototype.itf8=function(e,t){return this.setNextParser(\"itf8\",e,t)},d.prototype.itf8=function(e,t){return this.setNextParser(\"itf8\",e,t)},d.prototype.generateItf8=function(e){var t=e.generateVariable(this.varName),r=e.generateTmpVariable();e.pushCode(\"\\n    var \".concat(r,\" = buffer[offset];\\n    if (\").concat(r,\" < 0x80) {\\n      \").concat(t,\" = \").concat(r,\";\\n      offset += 1;\\n    } else if (\").concat(r,\" < 0xc0) {\\n      \").concat(t,\" = ((\").concat(r,\"<<8) | buffer[offset+1]) & 0x3fff;\\n      offset += 2;\\n    } else if (\").concat(r,\" < 0xe0) {\\n      \").concat(t,\" = ((\").concat(r,\"<<16) | (buffer[offset+1]<< 8) |  buffer[offset+2]) & 0x1fffff;\\n      offset += 3;\\n    } else if (\").concat(r,\" < 0xf0) {\\n      \").concat(t,\" = ((\").concat(r,\"<<24) | (buffer[offset+1]<<16) | (buffer[offset+2]<<8) | buffer[offset+3]) & 0x0fffffff;\\n      offset += 4\\n    } else {\\n      \").concat(t,\" = ((\").concat(r,\" & 0x0f)<<28) | (buffer[offset+1]<<20) | (buffer[offset+2]<<12) | (buffer[offset+3]<<4) | (buffer[offset+4] & 0x0f);\\n      // x=((0xff & 0x0f)<<28) | (0xff<<20) | (0xff<<12) | (0xff<<4) | (0x0f & 0x0f);\\n      // TODO *val_p = uv < 0x80000000UL ? uv : -((int32_t) (0xffffffffUL - uv)) - 1;\\n      offset += 5\\n    }\\n  \"))},d.prototype.ltf8=function(e,t){return this.setNextParser(\"ltf8\",e,t)},d.prototype.generateLtf8=function(e){var t=e.generateVariable(this.varName),r=e.generateTmpVariable();e.pushCode(\"\\n  var \".concat(r,\" = buffer[offset];\\n  if (\").concat(r,\" < 0x80) {\\n    \").concat(t,\" = \").concat(r,\";\\n    offset += 1;\\n  } else if (\").concat(r,\" < 0xc0) {\\n    \").concat(t,\" = ((buffer[offset]<<8) | buffer[offset+1]) & 0x3fff;\\n    offset += 2;\\n  } else if (\").concat(r,\" < 0xe0) {\\n    \").concat(t,\" = ((buffer[offset]<<16) | (buffer[offset+1]<<8) | buffer[offset+2]) & 0x1fffff;\\n    \").concat(t,\" = (((\").concat(r,\" & 63) << 16) | buffer.readUInt16LE(offset + 1));\\n    offset += 3;\\n  } else if (\").concat(r,\" < 0xf0) {\\n    \").concat(t,\" = ((buffer[offset]<<24) | (buffer[offset+1]<<16) | (buffer[offset+2]<<8) | buffer[offset+3]) & 0x0fffffff;\\n    offset += 4;\\n  } else if (\").concat(r,\" < 0xf8) {\\n    \").concat(t,\" = (((buffer[offset] & 15) * Math.pow(2,32))) +\\n      (buffer[offset+1]<<24) | (buffer[offset+2]<<16 | buffer[offset+3]<<8 | buffer[offset+4])\\n    // TODO *val_p = uv < 0x80000000UL ? uv : -((int32_t) (0xffffffffUL - uv)) - 1;\\n    offset += 5;\\n  } else if (\").concat(r,\" < 0xfc) {\\n    \").concat(t,\" = ((((buffer[offset] & 7) << 8) | buffer[offset+1] )) * Math.pow(2,32) +\\n      (buffer[offset+2]<<24) | (buffer[offset+3]<<16 | buffer[offset+4]<<8 | buffer[offset+5])\\n    offset += 6;\\n  } else if (\").concat(r,\" < 0xfe) {\\n    \").concat(t,\" = ((((buffer[offset] & 3) << 16) | buffer[offset+1]<<8 | buffer[offset+2])) * Math.pow(2,32) +\\n      (buffer[offset+3]<<24) | (buffer[offset+4]<<16 | buffer[offset+5]<<8 | buffer[offset+6])\\n    offset += 7;\\n  } else if (\").concat(r,\" < 0xff) {\\n    \").concat(t,\" = Long.fromBytesBE(buffer.slice(offset+1,offset+8));\\n    if (\").concat(t,\".greaterThan(Number.MAX_SAFE_INTEGER) || \").concat(t,\".lessThan(Number.MIN_SAFE_INTEGER))\\n      throw new Error('integer overflow')\\n    \").concat(t,\" = \").concat(t,\".toNumber()\\n    offset += 8;\\n  } else {\\n    \").concat(t,\" = Long.fromBytesBE(buffer.slice(offset+1,offset+9));\\n    if (\").concat(t,\".greaterThan(Number.MAX_SAFE_INTEGER) || \").concat(t,\".lessThan(Number.MIN_SAFE_INTEGER))\\n      throw new Error('integer overflow')\\n    \").concat(t,\" = \").concat(t,\".toNumber()\\n    offset += 9;\\n  }\\n  \"))},t.Parser=d},2961:(e,t)=>{\"use strict\";function r(e){return r=\"function\"==typeof Symbol&&\"symbol\"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&\"function\"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?\"symbol\":typeof e},r(e)}var n=function(){this.code=\"\",this.scopes=[[\"vars\"]],this.isAsync=!1,this.bitFields=[],this.tmpVariableCount=0,this.references={}};n.prototype.generateVariable=function(e){var t=[];for(Array.prototype.push.apply(t,this.scopes[this.scopes.length-1]);/^\\$parent\\./.test(e);)t.pop(),e=e.replace(/^\\$parent\\./,\"\");return e&&t.push(e),t.join(\".\")},n.prototype.generateOption=function(e){switch(r(e)){case\"number\":return e.toString();case\"string\":return this.generateVariable(e);case\"function\":return\"(\".concat(e,\").call(\").concat(this.generateVariable(),\", vars)\");default:return}},n.prototype.generateError=function(){var e=Array.prototype.slice.call(arguments),t=n.interpolate.apply(this,e);this.isAsync?this.pushCode(\"return process.nextTick(function() { callback(new Error(\".concat(t,\"), vars); });\")):this.pushCode(\"throw new Error(\".concat(t,\");\"))},n.prototype.generateTmpVariable=function(){return\"$tmp\".concat(this.tmpVariableCount++)},n.prototype.pushCode=function(){var e=Array.prototype.slice.call(arguments);this.code+=\"\".concat(n.interpolate.apply(this,e),\"\\n\")},n.prototype.pushPath=function(e){e&&this.scopes[this.scopes.length-1].push(e)},n.prototype.popPath=function(e){e&&this.scopes[this.scopes.length-1].pop()},n.prototype.pushScope=function(e){this.scopes.push([e])},n.prototype.popScope=function(){this.scopes.pop()},n.prototype.addReference=function(e){this.references[e]||(this.references[e]={resolved:!1,requested:!1})},n.prototype.markResolved=function(e){this.references[e].resolved=!0},n.prototype.markRequested=function(e){e.forEach(function(e){this.references[e].requested=!0}.bind(this))},n.prototype.getUnresolvedReferences=function(){var e=this.references;return Object.keys(this.references).filter((function(t){return!e[t].resolved&&!e[t].requested}))},n.interpolate=function(e){var t=/{\\d+}/g,r=e.match(t),n=Array.prototype.slice.call(arguments,1);return r&&r.forEach((function(t){var r=parseInt(t.substr(1,t.length-2),10);e=e.replace(t,n[r].toString())})),e},t._=n},22:e=>{e.exports.runInThisContext=function(e){return new Function(\"code\",\"return eval(code);\").call(globalThis,e)}},445:(e,t,r)=>{const n=r(7381),i=r(9260),o=r(576),s=r(4693),a=128;e.exports=class{decode(e){return this.stream=new i(e),this.decodeStream(this.stream)}decodeStream(e,t=0){var r=this.stream.ReadByte();16&r||(t=this.stream.ReadUint7());var n,i=t,o=1&r;if(8&r)return this.decodeStripe(this.stream,t);if(r&a&&([n,i]=this.decodePackMeta(this.stream)),32&r)var s=this.decodeCat(this.stream,i);else s=4&r?this.decodeExt(this.stream,i):64&r?o?this.decodeRLE1(this.stream,i):this.decodeRLE0(this.stream,i):o?this.decode1(this.stream,i):this.decode0(this.stream,i);return r&a&&(s=this.decodePack(s,n,t)),s}encode(e,t){if(this.stream=new i(\"\",0,1.1*e.length+100),this.stream.WriteByte(t),16&t||this.stream.WriteUint7(e.length),8&t)return Buffer.concat([this.stream.buf.slice(0,this.stream.pos),this.encodeStripe(this.stream,e,t>>8)]);var r,n=1&t,o=e.length;return t&a&&([r,e,o]=this.encodePack(e)),t&a&&this.stream.WriteStream(r),64&t?n?this.encodeRLE1(e,o,this.stream):this.encodeRLE0(e,o,this.stream):n?this.encode1(e,o,this.stream):this.encode0(e,o,this.stream)}decode0(e,t){var r=new Buffer.allocUnsafe(t),i=e.ReadByte();0==i&&(i=256);var s=new o(i),a=new n(e);a.RangeStartDecode(e);for(var f=0;f<t;f++)r[f]=s.ModelDecode(e,a);return r}encode0(e,t,r){for(var i=0,s=0;s<t;s++)i<e[s]&&(i=e[s]);i++;var a=new o(i);r.WriteByte(i);var f=new n(r);for(s=0;s<t;s++)a.ModelEncode(r,f,e[s]);return f.RangeFinishEncode(r),r.buf.slice(0,r.pos)}decode1(e,t){var r=new Buffer.allocUnsafe(t),i=e.ReadByte();0==i&&(i=256);for(var s=new Array(i),a=0;a<i;a++)s[a]=new o(i);var f=new n(e);f.RangeStartDecode(e);var h=0;for(a=0;a<t;a++)r[a]=s[h].ModelDecode(e,f),h=r[a];return r}encode1(e,t,r){for(var i=0,s=0;s<t;s++)i<e[s]&&(i=e[s]);i++;var a=new Array(i);for(s=0;s<i;s++)a[s]=new o(i);r.WriteByte(i);var f=new n(r),h=0;for(s=0;s<t;s++)a[h].ModelEncode(r,f,e[s]),h=e[s];return f.RangeFinishEncode(r),r.buf.slice(0,r.pos)}decodeExt(e,t){var r=new Buffer.allocUnsafe(t),n=s.array(e.buf.slice(e.pos)),i=s.header(n),o=0;do{var a=s.decompress(n,i);-1!=a&&(Buffer.from(a).copy(r,o),o+=a.length,i-=a.length)}while(-1!=a);return r}encodeExt(e,t){}decodeRLE0(e,t){var r=new Buffer.allocUnsafe(t),i=e.ReadByte();0==i&&(i=256);for(var s=new o(i),a=new Array(258),f=0;f<=257;f++)a[f]=new o(4);var h=new n(e);for(h.RangeStartDecode(e),f=0;f<t;){r[f]=s.ModelDecode(e,h);for(var l=a[r[f]].ModelDecode(e,h),u=l,c=256;3==l;)l=a[c].ModelDecode(e,h),c=257,u+=l;for(var d=1;d<=u;d++)r[f+d]=r[f];f+=u+1}return r}encodeRLE0(e,t,r){for(var i=0,s=0;s<t;s++)i<e[s]&&(i=e[s]);i++;var a=new o(i),f=new Array(258);for(s=0;s<=257;s++)f[s]=new o(4);r.WriteByte(i);var h=new n(r);for(s=0;s<t;){a.ModelEncode(r,h,e[s]);for(var l=1;s+l<t&&e[s+l]==e[s];)l++;l--;var u=e[s];e[s],s+=l+1;var c=l>=3?3:l;for(f[u].ModelEncode(r,h,c),l-=c,u=256;3==c;)c=l>=3?3:l,f[u].ModelEncode(r,h,c),u=257,l-=c}return h.RangeFinishEncode(r),r.buf.slice(0,r.pos)}decodeRLE1(e,t){var r=new Buffer.allocUnsafe(t),i=e.ReadByte();0==i&&(i=256);for(var s=new Array(i),a=0;a<i;a++)s[a]=new o(i);var f=new Array(258);for(a=0;a<=257;a++)f[a]=new o(4);var h=new n(e);h.RangeStartDecode(e);var l=0;for(a=0;a<t;){r[a]=s[l].ModelDecode(e,h),l=r[a];for(var u=f[r[a]].ModelDecode(e,h),c=u,d=256;3==u;)u=f[d].ModelDecode(e,h),d=257,c+=u;for(var p=1;p<=c;p++)r[a+p]=r[a];a+=c+1}return r}encodeRLE1(e,t,r){for(var i=0,s=0;s<t;s++)i<e[s]&&(i=e[s]);i++;var a=new Array(i);for(s=0;s<i;s++)a[s]=new o(i);var f=new Array(258);for(s=0;s<=257;s++)f[s]=new o(4);r.WriteByte(i);for(var h=new n(r),l=(s=0,0);s<t;){a[l].ModelEncode(r,h,e[s]);for(var u=1;s+u<t&&e[s+u]==e[s];)u++;u--;var c=e[s];l=e[s],s+=u+1;var d=u>=3?3:u;for(f[c].ModelEncode(r,h,d),u-=d,c=256;3==d;)d=u>=3?3:u,f[c].ModelEncode(r,h,d),c=257,u-=d}return h.RangeFinishEncode(r),r.buf.slice(0,r.pos)}decodePackMeta(e){this.nsym=e.ReadByte();for(var t=new Array(this.nsym),r=0;r<this.nsym;r++)t[r]=e.ReadByte();return[t,e.ReadUint7()]}decodePack(e,t,r){var n=new Buffer.allocUnsafe(r);if(this.nsym<=1)for(var i=0;i<r;i++)n[i]=t[0];else if(this.nsym<=2){i=0;for(var o=0;i<r;i++){if(i%8==0)var s=e[o++];n[i]=t[1&s],s>>=1}}else if(this.nsym<=4)for(i=0,o=0;i<r;i++)i%4==0&&(s=e[o++]),n[i]=t[3&s],s>>=2;else{if(!(this.nsym<=16))return e;for(i=0,o=0;i<r;i++)i%2==0&&(s=e[o++]),n[i]=t[15&s],s>>=4}return n}packMeta(e){for(var t=new i(\"\",0,1024),r=new Array(256),n=0;n<e.length;n++)r[e[n]]=1;var o=0;for(n=0;n<256;n++)r[n]&&(r[n]=++o);for(t.WriteByte(o),n=0;n<256;n++)r[n]&&(t.WriteByte(n),r[n]--);return[t,r,o]}encodePack(e){var t,r,n;[t,r,n]=this.packMeta(e);var i=e.length,o=0;if(n<=1)return t.WriteUint7(0),[t,new Buffer.allocUnsafe(0),0];if(n<=2){for(var s=new Buffer.allocUnsafe(Math.floor((i+7)/8)),a=(o=0,0);o<(-8&i);o+=8,a++)s[a]=(r[e[o+0]]<<0)+(r[e[o+1]]<<1)+(r[e[o+2]]<<2)+(r[e[o+3]]<<3)+(r[e[o+4]]<<4)+(r[e[o+5]]<<5)+(r[e[o+6]]<<6)+(r[e[o+7]]<<7);if(o<i){s[a]=0;for(var f=0;o<i;)s[a]|=r[e[o++]]<<f,f++;a++}return t.WriteUint7(a),[t,s,s.length]}if(n<=4){for(s=new Buffer.allocUnsafe(Math.floor((i+3)/4)),o=0,a=0;o<(-4&i);o+=4,a++)s[a]=(r[e[o+0]]<<0)+(r[e[o+1]]<<2)+(r[e[o+2]]<<4)+(r[e[o+3]]<<6);if(o<i){for(s[a]=0,f=0;o<i;)s[a]|=r[e[o++]]<<f,f+=2;a++}return t.WriteUint7(a),[t,s,s.length]}if(n<=16){for(s=new Buffer.allocUnsafe(Math.floor((i+1)/2)),o=0,a=0;o<(-2&i);o+=2,a++)s[a]=(r[e[o+0]]<<0)+(r[e[o+1]]<<4);return o<i&&(s[a++]=r[e[o++]]),t.WriteUint7(a),[t,s,s.length]}return t.WriteUint7(e.length),[t,e,e.length]}encodeStripe(e,t,r){0==r&&(r=4);for(var n=new Array(r),o=new Array(r),s=0;s<r;s++)o[s]=Math.floor(t.length/r)+(t.length%r>s),n[s]=new Array(o[s]);for(var a=0,f=0;f<t.length;f+=r,a++)for(var h=0;h<r;h++)a<n[h].length&&(n[h][a]=t[f+h]);var l=new Array(r),u=0;for(s=0;s<r;s++){var c=this.encode(n[s],0),d=this.encode(n[s],1);l[s]=d.length<c.length?d:c,u+=l[s].length}var p=new i(\"\",0,u+5*r+1);for(p.WriteByte(r),s=0;s<r;s++)p.WriteUint7(l[s].length);for(s=0;s<r;s++)p.WriteData(l[s],l[s].length);return p.buf.slice(0,p.buf.pos)}decodeStripe(e,t){for(var r=e.ReadByte(),n=new Array(r),i=new Array(r),o=0;o<r;o++)n[o]=e.ReadUint7();var s=new Array(r);for(o=0;o<r;o++)i[o]=Math.floor(t/r)+(t%r>o),s[o]=this.decodeStream(e,i[o]);var a=new Buffer.allocUnsafe(t);for(o=0;o<r;o++)for(var f=0;f<i[o];f++)a[f*r+o]=s[o][f];return a}decodeCat(e,t){for(var r=new Buffer.allocUnsafe(t),n=0;n<t;n++)r[n]=e.ReadByte();return r}}},7381:e=>{e.exports=class{constructor(e){this.low=0,this.range=4294967295,this.code=0,this.FFnum=0,this.carry=0,this.cache=0}RangeStartDecode(e){for(var t=0;t<5;t++)this.code=(this.code<<8)+e.ReadByte();this.code&=4294967295,this.code>>>=0}RangeGetFrequency(e){return this.range=Math.floor(this.range/e),Math.floor(this.code/this.range)}RangeDecode(e,t,r,n){for(this.code-=t*this.range,this.range*=r;this.range<1<<24;)this.range*=256,this.code=256*this.code+e.ReadByte()}RangeShiftLow(e){if(this.low<4278190080|this.carry){for(e.WriteByte(this.cache+this.carry);this.FFnum;)e.WriteByte(this.carry-1),this.FFnum--;this.cache=this.low>>>24,this.carry=0}else this.FFnum++;this.low<<=8,this.low>>>=0}RangeEncode(e,t,r,n){var i=this.low;for(this.range=Math.floor(this.range/n),this.low+=t*this.range,this.low>>>=0,this.range*=r,this.low<i&&(0!=this.carry&&console.log(\"ERROR: Multiple carry\"),this.carry=1);this.range<1<<24;)this.range*=256,this.RangeShiftLow(e)}RangeFinishEncode(e){for(var t=0;t<5;t++)this.RangeShiftLow(e)}}},576:e=>{e.exports=class{constructor(e=256){this.total_freq=e,this.max_sym=e-1,this.S=new Array,this.F=new Array;for(var t=0;t<=this.max_sym;t++)this.S[t]=t,this.F[t]=1}ModelDecode(e,t){for(var r=t.RangeGetFrequency(this.total_freq),n=0,i=0;n+this.F[i]<=r;)n+=this.F[i++];t.RangeDecode(e,n,this.F[i],this.total_freq),this.F[i]+=16,this.total_freq+=16,this.total_freq>65519&&this.ModelRenormalise();var o=this.S[i];if(i>0&&this.F[i]>this.F[i-1]){var s=this.F[i];this.F[i]=this.F[i-1],this.F[i-1]=s,s=this.S[i],this.S[i]=this.S[i-1],this.S[i-1]=s}return o}ModelRenormalise(){this.total_freq=0;for(var e=0;e<=this.max_sym;e++)this.F[e]-=Math.floor(this.F[e]/2),this.total_freq+=this.F[e]}ModelEncode(e,t,r){for(var n=0,i=0;this.S[i]!=r;i++)n+=this.F[i];if(t.RangeEncode(e,n,this.F[i],this.total_freq),this.F[i]+=16,this.total_freq+=16,this.total_freq>65519&&this.ModelRenormalise(),r=this.S[i],i>0&&this.F[i]>this.F[i-1]){var o=this.F[i];this.F[i]=this.F[i-1],this.F[i-1]=o,o=this.S[i],this.S[i]=this.S[i-1],this.S[i-1]=o}}}},5260:(e,t,r)=>{const n=r(9260),i=r(576),o=r(7381);function s(e,t,r){for(var n=0,i=0,o=-1,s=new Array(1024);i<r;){var a=e.ReadByte();if(s[n++]=a,i+=a,a==o){var f=e.ReadByte();for(i+=a*f;f--;)s[n++]=a}o=a}var h=0;for(n=0,i=0;i<r;){var l=0;do{var u=s[n++];l+=u}while(255==u);for(;l--;)t[i++]=h;h++}}function a(e,t,r){var n=e.context;return t.qctx=(t.qctx<<e.qshift)+e.qtab[r],n+=(t.qctx&(1<<e.qbits)-1)<<e.qloc,e.do_pos&&(n+=e.ptab[Math.min(t.p,1023)]<<e.ploc),e.do_delta&&(n+=e.dtab[Math.min(t.delta,255)]<<e.dloc,t.delta+=t.prevq!=r?1:0,t.prevq=r),e.do_sel&&(n+=t.s<<e.sloc),t.p--,65535&n}function f(e){var t={};t.context=e.ReadUint16(),t.pflags=e.ReadByte(),t.do_dedup=2&t.pflags,t.fixed_len=4&t.pflags,t.do_sel=8&t.pflags,t.do_qmap=16&t.pflags,t.do_pos=32&t.pflags,t.do_delta=64&t.pflags,t.do_qtab=128&t.pflags,t.max_sym=e.ReadByte();var r=e.ReadByte();if(t.qbits=r>>4,t.qshift=15&r,r=e.ReadByte(),t.qloc=r>>4,t.sloc=15&r,r=e.ReadByte(),t.ploc=r>>4,t.dloc=15&r,t.qmap=new Array(256),16&t.pflags)for(var n=0;n<t.max_sym;n++)t.qmap[n]=e.ReadByte();else for(n=0;n<256;n++)t.qmap[n]=n;if(t.qtab=new Array(1024),t.qbits>0&&128&t.pflags)s(e,t.qtab,256);else for(n=0;n<256;n++)t.qtab[n]=n;return t.ptab=new Array(1024),32&t.pflags&&s(e,t.ptab,1024),t.dtab=new Array(256),64&t.pflags&&s(e,t.dtab,256),t}function h(e,t,r,n,i,o){r.max_sel>0?i.s=n.sel.ModelDecode(e,t):i.s=0,i.x=r.stab[i.s];var s=r.params[i.x];if(s.fixed_len>=0){var a=n.len[0].ModelDecode(e,t);a|=n.len[1].ModelDecode(e,t)<<8,a|=n.len[2].ModelDecode(e,t)<<16,a|=n.len[3].ModelDecode(e,t)<<24,s.fixed_len>0&&(s.fixed_len=-a)}else a=-s.fixed_len;i.len=a,r.do_rev&&(o[i.rec]=n.rev.ModelDecode(e,t)),i.is_dup=0,2&s.pflags&&n.dup.ModelDecode(e,t)&&(i.is_dup=1),i.p=a,i.delta=0,i.qctx=0,i.prevq=0,i.rec++}function l(e,t,r){for(var n=0,i=0,o=new Array(2*r),s=0;n<r;){for(var a=n;n<r&&t[n]==i;)n++;var f=n-a;do{var h=Math.min(255,f);o[s++]=h,f-=h}while(255==h);i++}var l=-1,u=new Array(2*r),c=0;for(n=0;n<s;){var d=o[n++];if(u[c++]=d,d==l){for(a=n;n<s&&o[n]==l&&n-a<255;)n++;u[c++]=n-a}else l=d}e.WriteData(u,c)}e.exports={decode:function(e,t){return function(e,t){var r=e.ReadUint7(),n=function(e){var t={max_sym:0};if(5==e.ReadByte()){var r=e.ReadByte(),n=1&r?e.ReadByte():1,i=r.nparam>1?r.nparam-1:0,o=new Array(256);if(2&r)i=e.ReadByte(),s(e,o,256);else{for(var a=0;a<n;a++)o[a]=a;for(;a<256;a++)o[a]=n-1}t.do_rev=4&r,t.stab=o,t.max_sel=i,t.params=new Array(t.nparam);for(var h=0;h<n;h++)t.params[h]=f(e),t.max_sym<t.params[h].max_sym&&(t.max_sym=t.params[h].max_sym);return t}console.error(\"Invalid FQZComp version number\")}(e);if(n){var l=n.params,u=new Array(t.length),c=function(e){var t={};t.qual=new Array(65536);for(var r=0;r<65536;r++)t.qual[r]=new i(e.max_sym+1);for(t.len=new Array(4),r=0;r<4;r++)t.len[r]=new i(256);return t.rev=new i(2),t.dup=new i(2),e.max_sel>0&&(t.sel=new i(e.max_sel+1)),t}(n),d=new o(e);d.RangeStartDecode(e);for(var p=new Buffer.allocUnsafe(r),g={qctx:0,prevq:0,delta:0,p:0,s:0,x:0,len:0,is_dup:0,rec:0},m=0;m<r;){if(0==g.p){if(h(e,d,n,c,g,u),g.is_dup>0&&c.dup.ModelDecode(e,d)){for(var y=0;y<len;y++)p[m+y]=p[m+y-g.len];m+=g.len,g.p=0;continue}t.push(g.len);var b=(l=n.params[g.x]).context}var v=c.qual[b].ModelDecode(e,d);p[m++]=l.qmap[v],b=a(l,g,v)}return n.do_rev&&function(e,t,r,n){for(var i=0,o=0;o<t;){if(r[i])for(var s=0,a=n[i]-1;s<a;){var f=e[o+s];e[o+s]=e[o+a],e[o+a]=f,s++,a--}o+=n[i++]}}(p,r,u,t),p}}(new n(e),t)},encode:function(e,t,r){for(var s=new Array(2),a=new Array(2),f=new Array(2),h=new Array(2),u=new Array(256),c=0;c<2;c++)s[c]=new Array(256),a[c]=new Array(256),f[c]=new Array(1024),h[c]=new Array(256);(p=new n(\"\",0,1.1*e.length+100)).WriteUint7(e.length);var d=function(e,t,r,n){for(var i=r[0],o=0;o<r.length&&r[o]==i;o++);var s=o==r.length?1:0,a=0,f=0;for(o=0;o<256;o++)n[0][o]=0;var h=0,l=0;for(o=0;o<e.length;o++)0==l&&(l=t[h<t.length-1?h++:h]),n[0][e[o]]++,l--;for(o=0;o<256;o++)n[0][o]&&(f<o&&(f=o),a++);var u=5,c=0;return a<=16&&(c=1,u=a<=2?1:a<=4?2:a<=8?3:4),[{qbits:8+(u>4),qshift:u,qloc:7,pbits:7,pshift:t[0]>128?1:0,ploc:0,dbits:u>4?0:1,dshift:3,dloc:15,sbits:0,sloc:15,do_stab:0,context:0,max_sym:f,nsym:a,do_qmap:c,do_dedup:0,fixed_len:1==t.length?1:0,do_sel:0,do_rev:0,do_pos:1,do_delta:u<=4?1:0,do_qtab:0,qbits:8+(u>4)-(0==s),sbits:1,sloc:15-(u<=4),do_stab:1,do_sel:1}]}(e,t,r,s),p=function(e,t,r,n,i,o,s){for(var a=[0,1,1,1,2,2,2,2,2,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7],f=0;f<t.length;f++)s[f]=f;for(;f<256;f++)s[f]=t.length-1;e.WriteByte(5);var h=(t.length>1?1:0)|(t[0].do_stab?2:0);if(e.WriteByte(h),1&h&&e.WriteByte(t.length),2&h){var u=1<<t[0].sbits;u>0&&u--,e.WriteByte(u),l(e,s,256)}for(var c=0;c<t.length;c++){if(e.WriteUint16(t[c].context),e.WriteByte((t[c].do_qtab?128:0)|(t[c].do_delta?64:0)|(t[c].do_pos?32:0)|(t[c].do_qmap?16:0)|(t[c].do_sel?8:0)|(t[c].fixed_len?4:0)|(t[c].do_dedup?2:0)),t[c].do_qmap?e.WriteByte(t[c].nsym):e.WriteByte(t[c].max_sym),e.WriteByte(t[c].qbits<<4|t[c].qshift),e.WriteByte(t[c].qloc<<4|t[c].sloc),e.WriteByte(t[c].ploc<<4|t[c].dloc),t[c].do_qmap){t[c].max_sym=t[c].nsym;var d=0;for(f=0;f<256;f++)r[c][f]&&(e.WriteByte(f),r[c][f]=d++);for(;d<t[c].nsym;d++)e.WriteByte(0)}else for(f=0;f<256;f++)r[c][f]=f;if(t[c].qbits>0){for(f=0;f<256;f++)n[c][f]=f;t[c].do_qtab&&l(e,n[c],256)}if(t[c].pbits>0){for(f=0;f<1024;f++)i[c][f]=Math.min((1<<t[c].pbits)-1,f>>t[c].pshift);l(e,i[c],1024)}if(t[c].dbits>0){for(f=0;f<256;f++)a[f]>(1<<t[c].dbits)-1&&(a[f]=(1<<t[c].dbits)-1);for(f=0;f<256;f++)o[c][f]=a[Math.min(a.length-1,f>>t[c].dshift)];l(e,o[c],256)}}return e}(p,d,s,a,f,h,u);return function(e,t,r,n,s,a,f,h,l,u){var c=1<<s[0].sbits;c>0&&c--;for(var d=t.length,p=0,g=0;g<s.length;g++)p<s[g].max_sym&&(p=s[g].max_sym);for(var m=new Array(65536),y=0;y<65536;y++)m[y]=new i(p+1);var b=new Array(4);for(y=0;y<4;y++)b[y]=new i(256);new i(2),new i(2);for(var v=new i(c+1),w=new o(t),_=(g=0,y=0,0);y<d;){if(0==g){var B=n[_];s[0].sbits>0&&v.ModelEncode(e,w,B);var E=u[B],S=r[Math.min(r.length-1,_++)];s[E].fixed_len?s[E].fixed_len>0&&(b[0].ModelEncode(e,w,255&S),b[1].ModelEncode(e,w,S>>8&255),b[2].ModelEncode(e,w,S>>16&255),b[3].ModelEncode(e,w,S>>24&255),s[E].fixed_len=-1):(b[0].ModelEncode(e,w,255&S),b[1].ModelEncode(e,w,S>>8&255),b[2].ModelEncode(e,w,S>>16&255),b[3].ModelEncode(e,w,S>>24&255)),s[E].do_dedup&&process.exit(1),g=S;var A=0,C=s[E].context,R=0,k=0}var x=t[y++],I=a[E][x];m[C].ModelEncode(e,w,I),R=(R<<s[E].qshift)+f[E][I],C=s[E].context,C+=(R&(1<<s[E].qbits)-1)<<s[E].qloc,s[E].pbits>0&&(C+=h[E][Math.min(g,1023)]<<s[E].ploc),s[E].dbits>0&&(C+=l[E][Math.min(A,255)]<<s[E].dloc,A+=k!=I?1:0,k=I),s[E].do_sel&&(C+=B<<s[E].sloc),C&=65535,g--}return w.RangeFinishEncode(e),e.buf.slice(0,e.pos)}(p,e,t,r,d,s,a,f,h,u)}}},3498:(e,t,r)=>{\"use strict\";var n=r(4459),i=r(594),o=r(445),s=r(5260),a=r(2881);e.exports={r4x8_uncompress:function(e,t){n.decode(e).copy(t,0,0)},r4x16_uncompress:function(e,t){i.decode(e).copy(t,0,0)},arith_uncompress:function(e,t){o.decode(e).copy(t,0,0)},fqzcomp_uncompress:function(e,t){var r=new Array;s.decode(e,r).copy(t,0,0)},tok3_uncompress:function(e,t){var r=a.decode(e,0,\"\\0\");Buffer.from(r,\"binary\").copy(t,0,0)}}},9260:e=>{e.exports=class{constructor(e,t=0,r=0){0!=r?(this.buf=Buffer.allocUnsafe(r),this.length=r):(this.buf=e,this.length=e.length),this.pos=t}EOF(){return this.pos>=this.length}ReadData(e){var t=this.buf.slice(this.pos,this.pos+e);return this.pos+=e,t}ReadByte(){const e=this.buf[this.pos];return this.pos++,e}ReadChar(){const e=this.buf[this.pos];return this.pos++,String.fromCharCode(e)}ReadUint16(){return this.ReadByte()|this.ReadByte()<<8}ReadUint32(){const e=this.buf.readInt32LE(this.pos);return this.pos+=4,e}ReadString(){var e=\"\";do{var t=this.buf[this.pos++];t&&(e+=String.fromCharCode(t))}while(t);return e}ReadUint7(){var e=0;do{var t=this.ReadByte();e=e<<7|127&t}while(128&t);return e}ReadITF8(){var e=this.buf[this.pos];return this.pos++,e>=240?(e=(15&e)<<28,e+=(this.buf[this.pos+0]<<20)+(this.buf[this.pos+1]<<12)+(this.buf[this.pos+2]<<4)+(this.buf[this.pos+3]>>4),this.pos+=4):e>=224?(e=(15&e)<<24,e+=(this.buf[this.pos+0]<<16)+(this.buf[this.pos+1]<<8)+(this.buf[this.pos+2]<<0),this.pos+=3):e>=192?(e=(31&e)<<16,e+=(this.buf[this.pos+0]<<8)+(this.buf[this.pos+1]<<0),this.pos+=2):e>=128&&(e=(63&e)<<8,e+=this.buf[this.pos],this.pos++),e}WriteByte(e){this.buf[this.pos++]=e}WriteChar(e){this.buf[this.pos++]=e.charCodeAt(0)}WriteString(e){for(var t=0;t<e.length;t++)this.buf[this.pos++]=e.charCodeAt(t);this.buf[this.pos++]=0}WriteData(e,t){for(var r=0;r<t;r++)this.buf[this.pos++]=e[r]}WriteStream(e){this.WriteData(e.buf,e.pos)}WriteUint16(e){this.WriteByte(255&e),this.WriteByte(e>>8&255)}WriteUint32(e){this.buf.writeInt32LE(e,this.pos),this.pos+=4}WriteUint7(e){var t=0,r=e;do{t+=7,r>>=7}while(r>0);do{t-=7,this.WriteByte((e>>t&127)+((t>0)<<7))}while(t>0)}WriteITF8(e){e<0&&(e=1+e),e<=127?this.buf[this.pos++]=e:e<=16383?(this.buf[this.pos++]=128|Math.floor(e/256),this.buf[this.pos++]=255&e):e<131071?(this.buf[this.pos++]=192|Math.floor(e/65536),this.buf[this.pos++]=255&Math.floor(e/256),this.buf[this.pos++]=255&e):e<268435455?(this.buf[this.pos++]=224|Math.floor(e/16777216),this.buf[this.pos++]=255&Math.floor(e/65536),this.buf[this.pos++]=255&Math.floor(e/256),this.buf[this.pos++]=255&e):(this.buf[this.pos++]=240|Math.floor(e/268435456),this.buf[this.pos++]=255&Math.floor(e/1048576),this.buf[this.pos++]=255&Math.floor(e/4096),this.buf[this.pos++]=255&Math.floor(e/4),this.buf[this.pos++]=15&e)}WriteByteNeg(e){this.buf[--this.pos]=e}}},4459:(e,t,r)=>{const n=r(9260);function i(e){return 4095&e}function o(e,t){for(var r=0;t>=e[r+1];)r++;return r}function s(e){for(var t=new Array(4096),r=0,n=0;n<4096;n++){for(;n>=e[r+1];)r++;t[n]=r}return t}function a(e,t,r){return r*(e>>12)+(4095&e)-t}function f(e,t){for(;t<1<<23;)t=(t<<8)+e.ReadByte();return t}function h(e,t){t.WriteByteNeg(e>>24&255),t.WriteByteNeg(e>>16&255),t.WriteByteNeg(e>>8&255),t.WriteByteNeg(e>>0&255)}function l(e,t,r,n,i){return e=function(e,t,r,n){for(var i=(1<<23>>n<<8)*r;e>=i;)t.WriteByteNeg(255&e),e>>=8;return e}(e,t,n,i),(Math.floor(e/n)<<i)+e%n+r}function u(e,t,r){for(var n=0;n<256;n++)t[n]=0;var i=e.ReadByte(),o=i,s=0;do{var a=e.ReadITF8();t[i]=a,s>0?(s--,i++):(i=e.ReadByte())==o+1&&(s=e.ReadByte()),o=i}while(0!=i);for(r[0]=0,n=0;n<=255;n++)r[n+1]=r[n]+t[n]}function c(e){for(var t=0,r=0;r<256;r++)t+=e[r];const n=4096;var i=n/t;do{var o=0,s=0,a=0;for(t=0,r=0;r<256;r++)0!=e[r]&&(o<e[r]&&(o=e[r],s=r),e[r]=Math.floor(e[r]*i),0==e[r]&&(e[r]=1),t+=e[r]);t<n?e[s]+=n-t:t-n<e[s]/2&&e[s]>2?e[s]-=t-n:t!=n&&(i*=.99,a=1)}while(a)}function d(e,t){for(var r=0,n=0;n<256;n++)if(t[n]){if(r>0)r--;else if(e.WriteByte(n),n>0&&t[n-1]>0){for(r=n+1;r<256&&t[r];r++);r-=n+1,e.WriteByte(r)}e.WriteITF8(t[n])}e.WriteByte(0)}e.exports={decode:function(e){var t=new n(e),r=t.ReadByte(),h=(t.ReadUint32(),t.ReadUint32());return 0==r?function(e,t){var r=new Array(256),n=new Array(256);u(e,r,n);for(var o=s(n),h=new Array(4),l=0;l<4;l++)h[l]=e.ReadUint32();var c=new Buffer.allocUnsafe(t);for(l=0;l<t;l++){var d=l%4,p=o[i(h[d])];c[l]=p,h[d]=a(h[d],n[p],r[p]),h[d]=f(e,h[d])}return c}(t,h):function(e,t){var r=new Array(256),n=new Array(256);!function(e,t,r){for(var n=0;n<256;n++){t[n]=new Array(256),r[n]=new Array(256);for(var i=0;i<256;i++)t[n][i]=0}var o=e.ReadByte(),s=o,a=0;do{u(e,t[o],r[o]),a>0?(a--,o++):(o=e.ReadByte())==s+1&&(a=e.ReadByte()),s=o}while(0!=o)}(e,r,n);for(var h=new Array(256),l=0;l<256;l++)h[l]=s(n[l]);for(var c=new Array(4),d=new Array(4),p=0;p<4;p++)c[p]=e.ReadUint32(),d[p]=0;var g=new Buffer.allocUnsafe(t),m=Math.floor(t/4);for(l=0;l<m;l++)for(p=0;p<4;p++){var 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i.status=73;if(73===i.status)if(i.gzhead.name){s=i.pending;do{if(i.pending===i.pending_buf_size&&(i.gzhead.hcrc&&i.pending>s&&(e.adler=a(e.adler,i.pending_buf,i.pending-s,s)),b(e),s=i.pending,i.pending===i.pending_buf_size)){f=1;break}f=i.gzindex<i.gzhead.name.length?255&i.gzhead.name.charCodeAt(i.gzindex++):0,w(i,f)}while(0!==f);i.gzhead.hcrc&&i.pending>s&&(e.adler=a(e.adler,i.pending_buf,i.pending-s,s)),0===f&&(i.gzindex=0,i.status=91)}else i.status=91;if(91===i.status)if(i.gzhead.comment){s=i.pending;do{if(i.pending===i.pending_buf_size&&(i.gzhead.hcrc&&i.pending>s&&(e.adler=a(e.adler,i.pending_buf,i.pending-s,s)),b(e),s=i.pending,i.pending===i.pending_buf_size)){f=1;break}f=i.gzindex<i.gzhead.comment.length?255&i.gzhead.comment.charCodeAt(i.gzindex++):0,w(i,f)}while(0!==f);i.gzhead.hcrc&&i.pending>s&&(e.adler=a(e.adler,i.pending_buf,i.pending-s,s)),0===f&&(i.status=c)}else 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i.last_flush=-1,0}return 4!==t?0:i.wrap<=0?1:(2===i.wrap?(w(i,255&e.adler),w(i,e.adler>>8&255),w(i,e.adler>>16&255),w(i,e.adler>>24&255),w(i,255&e.total_in),w(i,e.total_in>>8&255),w(i,e.total_in>>16&255),w(i,e.total_in>>24&255)):(_(i,e.adler>>>16),_(i,65535&e.adler)),b(e),i.wrap>0&&(i.wrap=-i.wrap),0!==i.pending?0:1)},t.deflateEnd=function(e){var t;return e&&e.state?42!==(t=e.state.status)&&69!==t&&73!==t&&91!==t&&t!==c&&t!==d&&t!==p?g(e,h):(e.state=null,t===d?g(e,-3):0):h},t.deflateSetDictionary=function(e,t){var r,n,o,a,f,l,u,c,d=t.length;if(!e||!e.state)return h;if(2===(a=(r=e.state).wrap)||1===a&&42!==r.status||r.lookahead)return h;for(1===a&&(e.adler=s(e.adler,t,d,0)),r.wrap=0,d>=r.w_size&&(0===a&&(y(r.head),r.strstart=0,r.block_start=0,r.insert=0),c=new i.Buf8(r.w_size),i.arraySet(c,t,d-r.w_size,r.w_size,0),t=c,d=r.w_size),f=e.avail_in,l=e.next_in,u=e.input,e.avail_in=d,e.next_in=0,e.input=t,S(r);r.lookahead>=3;){n=r.strstart,o=r.lookahead-2;do{r.ins_h=(r.ins_h<<r.hash_shift^r.window[n+3-1])&r.hash_mask,r.prev[n&r.w_mask]=r.head[r.ins_h],r.head[r.ins_h]=n,n++}while(--o);r.strstart=n,r.lookahead=2,S(r)}return r.strstart+=r.lookahead,r.block_start=r.strstart,r.insert=r.lookahead,r.lookahead=0,r.match_length=r.prev_length=2,r.match_available=0,e.next_in=l,e.input=u,e.avail_in=f,r.wrap=a,0},t.deflateInfo=\"pako deflate (from Nodeca project)\"},2401:e=>{\"use strict\";e.exports=function(){this.text=0,this.time=0,this.xflags=0,this.os=0,this.extra=null,this.extra_len=0,this.name=\"\",this.comment=\"\",this.hcrc=0,this.done=!1}},4264:e=>{\"use strict\";e.exports=function(e,t){var r,n,i,o,s,a,f,h,l,u,c,d,p,g,m,y,b,v,w,_,B,E,S,A,C;r=e.state,n=e.next_in,A=e.input,i=n+(e.avail_in-5),o=e.next_out,C=e.output,s=o-(t-e.avail_out),a=o+(e.avail_out-257),f=r.dmax,h=r.wsize,l=r.whave,u=r.wnext,c=r.window,d=r.hold,p=r.bits,g=r.lencode,m=r.distcode,y=(1<<r.lenbits)-1,b=(1<<r.distbits)-1;e:do{p<15&&(d+=A[n++]<<p,p+=8,d+=A[n++]<<p,p+=8),v=g[d&y];t:for(;;){if(d>>>=w=v>>>24,p-=w,0==(w=v>>>16&255))C[o++]=65535&v;else{if(!(16&w)){if(0==(64&w)){v=g[(65535&v)+(d&(1<<w)-1)];continue t}if(32&w){r.mode=12;break e}e.msg=\"invalid literal/length code\",r.mode=30;break e}_=65535&v,(w&=15)&&(p<w&&(d+=A[n++]<<p,p+=8),_+=d&(1<<w)-1,d>>>=w,p-=w),p<15&&(d+=A[n++]<<p,p+=8,d+=A[n++]<<p,p+=8),v=m[d&b];r:for(;;){if(d>>>=w=v>>>24,p-=w,!(16&(w=v>>>16&255))){if(0==(64&w)){v=m[(65535&v)+(d&(1<<w)-1)];continue r}e.msg=\"invalid distance code\",r.mode=30;break e}if(B=65535&v,p<(w&=15)&&(d+=A[n++]<<p,(p+=8)<w&&(d+=A[n++]<<p,p+=8)),(B+=d&(1<<w)-1)>f){e.msg=\"invalid distance too far back\",r.mode=30;break 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c(){this.mode=0,this.last=!1,this.wrap=0,this.havedict=!1,this.flags=0,this.dmax=0,this.check=0,this.total=0,this.head=null,this.wbits=0,this.wsize=0,this.whave=0,this.wnext=0,this.window=null,this.hold=0,this.bits=0,this.length=0,this.offset=0,this.extra=0,this.lencode=null,this.distcode=null,this.lenbits=0,this.distbits=0,this.ncode=0,this.nlen=0,this.ndist=0,this.have=0,this.next=null,this.lens=new n.Buf16(320),this.work=new n.Buf16(288),this.lendyn=null,this.distdyn=null,this.sane=0,this.back=0,this.was=0}function d(e){var t;return e&&e.state?(t=e.state,e.total_in=e.total_out=t.total=0,e.msg=\"\",t.wrap&&(e.adler=1&t.wrap),t.mode=1,t.last=0,t.havedict=0,t.dmax=32768,t.head=null,t.hold=0,t.bits=0,t.lencode=t.lendyn=new n.Buf32(852),t.distcode=t.distdyn=new n.Buf32(592),t.sane=1,t.back=-1,0):f}function p(e){var t;return e&&e.state?((t=e.state).wsize=0,t.whave=0,t.wnext=0,d(e)):f}function g(e,t){var r,n;return 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n.Buf8(s.wsize)),i>=s.wsize?(n.arraySet(s.window,t,r-s.wsize,s.wsize,0),s.wnext=0,s.whave=s.wsize):((o=s.wsize-s.wnext)>i&&(o=i),n.arraySet(s.window,t,r-i,o,s.wnext),(i-=o)?(n.arraySet(s.window,t,r-i,i,0),s.wnext=i,s.whave=s.wsize):(s.wnext+=o,s.wnext===s.wsize&&(s.wnext=0),s.whave<s.wsize&&(s.whave+=o))),0}t.inflateReset=p,t.inflateReset2=g,t.inflateResetKeep=d,t.inflateInit=function(e){return m(e,15)},t.inflateInit2=m,t.inflate=function(e,t){var r,c,d,p,g,m,y,b,v,B,E,S,A,C,R,k,x,I,M,F,O,T,U,P,N=0,L=new n.Buf8(4),z=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];if(!e||!e.state||!e.output||!e.input&&0!==e.avail_in)return f;(r=e.state).mode===h&&(r.mode=13),g=e.next_out,d=e.output,y=e.avail_out,p=e.next_in,c=e.input,m=e.avail_in,b=r.hold,v=r.bits,B=m,E=y,T=0;e:for(;;)switch(r.mode){case 1:if(0===r.wrap){r.mode=13;break}for(;v<16;){if(0===m)break 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e;m--,b+=c[p++]<<v,v+=8}r.head&&(r.head.time=b),512&r.flags&&(L[0]=255&b,L[1]=b>>>8&255,L[2]=b>>>16&255,L[3]=b>>>24&255,r.check=o(r.check,L,4,0)),b=0,v=0,r.mode=4;case 4:for(;v<16;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}r.head&&(r.head.xflags=255&b,r.head.os=b>>8),512&r.flags&&(L[0]=255&b,L[1]=b>>>8&255,r.check=o(r.check,L,2,0)),b=0,v=0,r.mode=5;case 5:if(1024&r.flags){for(;v<16;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}r.length=b,r.head&&(r.head.extra_len=b),512&r.flags&&(L[0]=255&b,L[1]=b>>>8&255,r.check=o(r.check,L,2,0)),b=0,v=0}else r.head&&(r.head.extra=null);r.mode=6;case 6:if(1024&r.flags&&((S=r.length)>m&&(S=m),S&&(r.head&&(O=r.head.extra_len-r.length,r.head.extra||(r.head.extra=new Array(r.head.extra_len)),n.arraySet(r.head.extra,c,p,S,O)),512&r.flags&&(r.check=o(r.check,c,S,p)),m-=S,p+=S,r.length-=S),r.length))break e;r.length=0,r.mode=7;case 7:if(2048&r.flags){if(0===m)break e;S=0;do{O=c[p+S++],r.head&&O&&r.length<65536&&(r.head.name+=String.fromCharCode(O))}while(O&&S<m);if(512&r.flags&&(r.check=o(r.check,c,S,p)),m-=S,p+=S,O)break e}else r.head&&(r.head.name=null);r.length=0,r.mode=8;case 8:if(4096&r.flags){if(0===m)break e;S=0;do{O=c[p+S++],r.head&&O&&r.length<65536&&(r.head.comment+=String.fromCharCode(O))}while(O&&S<m);if(512&r.flags&&(r.check=o(r.check,c,S,p)),m-=S,p+=S,O)break e}else r.head&&(r.head.comment=null);r.mode=9;case 9:if(512&r.flags){for(;v<16;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}if(b!==(65535&r.check)){e.msg=\"header crc mismatch\",r.mode=l;break}b=0,v=0}r.head&&(r.head.hcrc=r.flags>>9&1,r.head.done=!0),e.adler=r.check=0,r.mode=h;break;case 10:for(;v<32;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}e.adler=r.check=u(b),b=0,v=0,r.mode=11;case 11:if(0===r.havedict)return e.next_out=g,e.avail_out=y,e.next_in=p,e.avail_in=m,r.hold=b,r.bits=v,2;e.adler=r.check=1,r.mode=h;case h:if(5===t||6===t)break e;case 13:if(r.last){b>>>=7&v,v-=7&v,r.mode=27;break}for(;v<3;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}switch(r.last=1&b,v-=1,3&(b>>>=1)){case 0:r.mode=14;break;case 1:if(w(r),r.mode=20,6===t){b>>>=2,v-=2;break e}break;case 2:r.mode=17;break;case 3:e.msg=\"invalid block type\",r.mode=l}b>>>=2,v-=2;break;case 14:for(b>>>=7&v,v-=7&v;v<32;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}if((65535&b)!=(b>>>16^65535)){e.msg=\"invalid stored block lengths\",r.mode=l;break}if(r.length=65535&b,b=0,v=0,r.mode=15,6===t)break e;case 15:r.mode=16;case 16:if(S=r.length){if(S>m&&(S=m),S>y&&(S=y),0===S)break e;n.arraySet(d,c,p,S,g),m-=S,p+=S,y-=S,g+=S,r.length-=S;break}r.mode=h;break;case 17:for(;v<14;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}if(r.nlen=257+(31&b),b>>>=5,v-=5,r.ndist=1+(31&b),b>>>=5,v-=5,r.ncode=4+(15&b),b>>>=4,v-=4,r.nlen>286||r.ndist>30){e.msg=\"too many length or distance symbols\",r.mode=l;break}r.have=0,r.mode=18;case 18:for(;r.have<r.ncode;){for(;v<3;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}r.lens[z[r.have++]]=7&b,b>>>=3,v-=3}for(;r.have<19;)r.lens[z[r.have++]]=0;if(r.lencode=r.lendyn,r.lenbits=7,U={bits:r.lenbits},T=a(0,r.lens,0,19,r.lencode,0,r.work,U),r.lenbits=U.bits,T){e.msg=\"invalid code lengths set\",r.mode=l;break}r.have=0,r.mode=19;case 19:for(;r.have<r.nlen+r.ndist;){for(;k=(N=r.lencode[b&(1<<r.lenbits)-1])>>>16&255,x=65535&N,!((R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}if(x<16)b>>>=R,v-=R,r.lens[r.have++]=x;else{if(16===x){for(P=R+2;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}if(b>>>=R,v-=R,0===r.have){e.msg=\"invalid bit length repeat\",r.mode=l;break}O=r.lens[r.have-1],S=3+(3&b),b>>>=2,v-=2}else if(17===x){for(P=R+3;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}v-=R,O=0,S=3+(7&(b>>>=R)),b>>>=3,v-=3}else{for(P=R+7;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}v-=R,O=0,S=11+(127&(b>>>=R)),b>>>=7,v-=7}if(r.have+S>r.nlen+r.ndist){e.msg=\"invalid bit length repeat\",r.mode=l;break}for(;S--;)r.lens[r.have++]=O}}if(r.mode===l)break;if(0===r.lens[256]){e.msg=\"invalid code -- missing end-of-block\",r.mode=l;break}if(r.lenbits=9,U={bits:r.lenbits},T=a(1,r.lens,0,r.nlen,r.lencode,0,r.work,U),r.lenbits=U.bits,T){e.msg=\"invalid literal/lengths set\",r.mode=l;break}if(r.distbits=6,r.distcode=r.distdyn,U={bits:r.distbits},T=a(2,r.lens,r.nlen,r.ndist,r.distcode,0,r.work,U),r.distbits=U.bits,T){e.msg=\"invalid distances set\",r.mode=l;break}if(r.mode=20,6===t)break e;case 20:r.mode=21;case 21:if(m>=6&&y>=258){e.next_out=g,e.avail_out=y,e.next_in=p,e.avail_in=m,r.hold=b,r.bits=v,s(e,E),g=e.next_out,d=e.output,y=e.avail_out,p=e.next_in,c=e.input,m=e.avail_in,b=r.hold,v=r.bits,r.mode===h&&(r.back=-1);break}for(r.back=0;k=(N=r.lencode[b&(1<<r.lenbits)-1])>>>16&255,x=65535&N,!((R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}if(k&&0==(240&k)){for(I=R,M=k,F=x;k=(N=r.lencode[F+((b&(1<<I+M)-1)>>I)])>>>16&255,x=65535&N,!(I+(R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}b>>>=I,v-=I,r.back+=I}if(b>>>=R,v-=R,r.back+=R,r.length=x,0===k){r.mode=26;break}if(32&k){r.back=-1,r.mode=h;break}if(64&k){e.msg=\"invalid literal/length code\",r.mode=l;break}r.extra=15&k,r.mode=22;case 22:if(r.extra){for(P=r.extra;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}r.length+=b&(1<<r.extra)-1,b>>>=r.extra,v-=r.extra,r.back+=r.extra}r.was=r.length,r.mode=23;case 23:for(;k=(N=r.distcode[b&(1<<r.distbits)-1])>>>16&255,x=65535&N,!((R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}if(0==(240&k)){for(I=R,M=k,F=x;k=(N=r.distcode[F+((b&(1<<I+M)-1)>>I)])>>>16&255,x=65535&N,!(I+(R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}b>>>=I,v-=I,r.back+=I}if(b>>>=R,v-=R,r.back+=R,64&k){e.msg=\"invalid distance code\",r.mode=l;break}r.offset=x,r.extra=15&k,r.mode=24;case 24:if(r.extra){for(P=r.extra;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}r.offset+=b&(1<<r.extra)-1,b>>>=r.extra,v-=r.extra,r.back+=r.extra}if(r.offset>r.dmax){e.msg=\"invalid distance too far back\",r.mode=l;break}r.mode=25;case 25:if(0===y)break e;if(S=E-y,r.offset>S){if((S=r.offset-S)>r.whave&&r.sane){e.msg=\"invalid distance too far back\",r.mode=l;break}S>r.wnext?(S-=r.wnext,A=r.wsize-S):A=r.wnext-S,S>r.length&&(S=r.length),C=r.window}else C=d,A=g-r.offset,S=r.length;S>y&&(S=y),y-=S,r.length-=S;do{d[g++]=C[A++]}while(--S);0===r.length&&(r.mode=21);break;case 26:if(0===y)break e;d[g++]=r.length,y--,r.mode=21;break;case 27:if(r.wrap){for(;v<32;){if(0===m)break e;m--,b|=c[p++]<<v,v+=8}if(E-=y,e.total_out+=E,r.total+=E,E&&(e.adler=r.check=r.flags?o(r.check,d,E,g-E):i(r.check,d,E,g-E)),E=y,(r.flags?b:u(b))!==r.check){e.msg=\"incorrect data check\",r.mode=l;break}b=0,v=0}r.mode=28;case 28:if(r.wrap&&r.flags){for(;v<32;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}if(b!==(4294967295&r.total)){e.msg=\"incorrect length check\",r.mode=l;break}b=0,v=0}r.mode=29;case 29:T=1;break e;case l:T=-3;break e;case 31:return-4;default:return f}return e.next_out=g,e.avail_out=y,e.next_in=p,e.avail_in=m,r.hold=b,r.bits=v,(r.wsize||E!==e.avail_out&&r.mode<l&&(r.mode<27||4!==t))&&_(e,e.output,e.next_out,E-e.avail_out)?(r.mode=31,-4):(B-=e.avail_in,E-=e.avail_out,e.total_in+=B,e.total_out+=E,r.total+=E,r.wrap&&E&&(e.adler=r.check=r.flags?o(r.check,d,E,e.next_out-E):i(r.check,d,E,e.next_out-E)),e.data_type=r.bits+(r.last?64:0)+(r.mode===h?128:0)+(20===r.mode||15===r.mode?256:0),(0===B&&0===E||4===t)&&0===T&&(T=-5),T)},t.inflateEnd=function(e){if(!e||!e.state)return f;var t=e.state;return t.window&&(t.window=null),e.state=null,0},t.inflateGetHeader=function(e,t){var r;return e&&e.state?0==(2&(r=e.state).wrap)?f:(r.head=t,t.done=!1,0):f},t.inflateSetDictionary=function(e,t){var r,n=t.length;return e&&e.state?0!==(r=e.state).wrap&&11!==r.mode?f:11===r.mode&&i(1,t,n,0)!==r.check?-3:_(e,t,n,n)?(r.mode=31,-4):(r.havedict=1,0):f},t.inflateInfo=\"pako inflate (from Nodeca project)\"},9241:(e,t,r)=>{\"use strict\";var n=r(4236),i=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],o=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],s=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],a=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];e.exports=function(e,t,r,f,h,l,u,c){var d,p,g,m,y,b,v,w,_,B=c.bits,E=0,S=0,A=0,C=0,R=0,k=0,x=0,I=0,M=0,F=0,O=null,T=0,U=new n.Buf16(16),P=new n.Buf16(16),N=null,L=0;for(E=0;E<=15;E++)U[E]=0;for(S=0;S<f;S++)U[t[r+S]]++;for(R=B,C=15;C>=1&&0===U[C];C--);if(R>C&&(R=C),0===C)return h[l++]=20971520,h[l++]=20971520,c.bits=1,0;for(A=1;A<C&&0===U[A];A++);for(R<A&&(R=A),I=1,E=1;E<=15;E++)if(I<<=1,(I-=U[E])<0)return-1;if(I>0&&(0===e||1!==C))return-1;for(P[1]=0,E=1;E<15;E++)P[E+1]=P[E]+U[E];for(S=0;S<f;S++)0!==t[r+S]&&(u[P[t[r+S]]++]=S);if(0===e?(O=N=u,b=19):1===e?(O=i,T-=257,N=o,L-=257,b=256):(O=s,N=a,b=-1),F=0,S=0,E=A,y=l,k=R,x=0,g=-1,m=(M=1<<R)-1,1===e&&M>852||2===e&&M>592)return 1;for(;;){v=E-x,u[S]<b?(w=0,_=u[S]):u[S]>b?(w=N[L+u[S]],_=O[T+u[S]]):(w=96,_=0),d=1<<E-x,A=p=1<<k;do{h[y+(F>>x)+(p-=d)]=v<<24|w<<16|_|0}while(0!==p);for(d=1<<E-1;F&d;)d>>=1;if(0!==d?(F&=d-1,F+=d):F=0,S++,0==--U[E]){if(E===C)break;E=t[r+u[S]]}if(E>R&&(F&m)!==g){for(0===x&&(x=R),y+=A,I=1<<(k=E-x);k+x<C&&!((I-=U[k+x])<=0);)k++,I<<=1;if(M+=1<<k,1===e&&M>852||2===e&&M>592)return 1;h[g=F&m]=R<<24|k<<16|y-l|0}}return 0!==F&&(h[y+F]=E-x<<24|64<<16|0),c.bits=R,0}},8898:e=>{\"use strict\";e.exports={2:\"need dictionary\",1:\"stream end\",0:\"\",\"-1\":\"file error\",\"-2\":\"stream error\",\"-3\":\"data error\",\"-4\":\"insufficient memory\",\"-5\":\"buffer error\",\"-6\":\"incompatible version\"}},342:(e,t,r)=>{\"use strict\";var n=r(4236);function i(e){for(var t=e.length;--t>=0;)e[t]=0}var o=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0],s=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13],a=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7],f=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],h=new Array(576);i(h);var l=new Array(60);i(l);var u=new Array(512);i(u);var c=new Array(256);i(c);var d=new Array(29);i(d);var p,g,m,y=new Array(30);function b(e,t,r,n,i){this.static_tree=e,this.extra_bits=t,this.extra_base=r,this.elems=n,this.max_length=i,this.has_stree=e&&e.length}function v(e,t){this.dyn_tree=e,this.max_code=0,this.stat_desc=t}function w(e){return e<256?u[e]:u[256+(e>>>7)]}function _(e,t){e.pending_buf[e.pending++]=255&t,e.pending_buf[e.pending++]=t>>>8&255}function B(e,t,r){e.bi_valid>16-r?(e.bi_buf|=t<<e.bi_valid&65535,_(e,e.bi_buf),e.bi_buf=t>>16-e.bi_valid,e.bi_valid+=r-16):(e.bi_buf|=t<<e.bi_valid&65535,e.bi_valid+=r)}function E(e,t,r){B(e,r[2*t],r[2*t+1])}function S(e,t){var r=0;do{r|=1&e,e>>>=1,r<<=1}while(--t>0);return r>>>1}function A(e,t,r){var n,i,o=new Array(16),s=0;for(n=1;n<=15;n++)o[n]=s=s+r[n-1]<<1;for(i=0;i<=t;i++){var a=e[2*i+1];0!==a&&(e[2*i]=S(o[a]++,a))}}function C(e){var t;for(t=0;t<286;t++)e.dyn_ltree[2*t]=0;for(t=0;t<30;t++)e.dyn_dtree[2*t]=0;for(t=0;t<19;t++)e.bl_tree[2*t]=0;e.dyn_ltree[512]=1,e.opt_len=e.static_len=0,e.last_lit=e.matches=0}function R(e){e.bi_valid>8?_(e,e.bi_buf):e.bi_valid>0&&(e.pending_buf[e.pending++]=e.bi_buf),e.bi_buf=0,e.bi_valid=0}function k(e,t,r,n){var i=2*t,o=2*r;return e[i]<e[o]||e[i]===e[o]&&n[t]<=n[r]}function x(e,t,r){for(var n=e.heap[r],i=r<<1;i<=e.heap_len&&(i<e.heap_len&&k(t,e.heap[i+1],e.heap[i],e.depth)&&i++,!k(t,n,e.heap[i],e.depth));)e.heap[r]=e.heap[i],r=i,i<<=1;e.heap[r]=n}function 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r,n,i,o,s,a,f=t.dyn_tree,h=t.max_code,l=t.stat_desc.static_tree,u=t.stat_desc.has_stree,c=t.stat_desc.extra_bits,d=t.stat_desc.extra_base,p=t.stat_desc.max_length,g=0;for(o=0;o<=15;o++)e.bl_count[o]=0;for(f[2*e.heap[e.heap_max]+1]=0,r=e.heap_max+1;r<573;r++)(o=f[2*f[2*(n=e.heap[r])+1]+1]+1)>p&&(o=p,g++),f[2*n+1]=o,n>h||(e.bl_count[o]++,s=0,n>=d&&(s=c[n-d]),a=f[2*n],e.opt_len+=a*(o+s),u&&(e.static_len+=a*(l[2*n+1]+s)));if(0!==g){do{for(o=p-1;0===e.bl_count[o];)o--;e.bl_count[o]--,e.bl_count[o+1]+=2,e.bl_count[p]--,g-=2}while(g>0);for(o=p;0!==o;o--)for(n=e.bl_count[o];0!==n;)(i=e.heap[--r])>h||(f[2*i+1]!==o&&(e.opt_len+=(o-f[2*i+1])*f[2*i],f[2*i+1]=o),n--)}}(e,t),A(o,h,e.bl_count)}function F(e,t,r){var n,i,o=-1,s=t[1],a=0,f=7,h=4;for(0===s&&(f=138,h=3),t[2*(r+1)+1]=65535,n=0;n<=r;n++)i=s,s=t[2*(n+1)+1],++a<f&&i===s||(a<h?e.bl_tree[2*i]+=a:0!==i?(i!==o&&e.bl_tree[2*i]++,e.bl_tree[32]++):a<=10?e.bl_tree[34]++:e.bl_tree[36]++,a=0,o=i,0===s?(f=138,h=3):i===s?(f=6,h=3):(f=7,h=4))}function 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v=r.pathname&&\"/\"===r.pathname.charAt(0),w=e.host||e.pathname&&\"/\"===e.pathname.charAt(0),_=w||v||r.host&&e.pathname,B=_,E=r.pathname&&r.pathname.split(\"/\")||[],S=(p=e.pathname&&e.pathname.split(\"/\")||[],r.protocol&&!y[r.protocol]);if(S&&(r.hostname=\"\",r.port=null,r.host&&(\"\"===E[0]?E[0]=r.host:E.unshift(r.host)),r.host=\"\",e.protocol&&(e.hostname=null,e.port=null,e.host&&(\"\"===p[0]?p[0]=e.host:p.unshift(e.host)),e.host=null),_=_&&(\"\"===p[0]||\"\"===E[0])),w)r.host=e.host||\"\"===e.host?e.host:r.host,r.hostname=e.hostname||\"\"===e.hostname?e.hostname:r.hostname,r.search=e.search,r.query=e.query,E=p;else if(p.length)E||(E=[]),E.pop(),E=E.concat(p),r.search=e.search,r.query=e.query;else if(!i.isNullOrUndefined(e.search))return S&&(r.hostname=r.host=E.shift(),(x=!!(r.host&&r.host.indexOf(\"@\")>0)&&r.host.split(\"@\"))&&(r.auth=x.shift(),r.host=r.hostname=x.shift())),r.search=e.search,r.query=e.query,i.isNull(r.pathname)&&i.isNull(r.search)||(r.path=(r.pathname?r.pathname:\"\")+(r.search?r.search:\"\")),r.href=r.format(),r;if(!E.length)return r.pathname=null,r.search?r.path=\"/\"+r.search:r.path=null,r.href=r.format(),r;for(var A=E.slice(-1)[0],C=(r.host||e.host||E.length>1)&&(\".\"===A||\"..\"===A)||\"\"===A,R=0,k=E.length;k>=0;k--)\".\"===(A=E[k])?E.splice(k,1):\"..\"===A?(E.splice(k,1),R++):R&&(E.splice(k,1),R--);if(!_&&!B)for(;R--;R)E.unshift(\"..\");!_||\"\"===E[0]||E[0]&&\"/\"===E[0].charAt(0)||E.unshift(\"\"),C&&\"/\"!==E.join(\"/\").substr(-1)&&E.push(\"\");var x,I=\"\"===E[0]||E[0]&&\"/\"===E[0].charAt(0);return S&&(r.hostname=r.host=I?\"\":E.length?E.shift():\"\",(x=!!(r.host&&r.host.indexOf(\"@\")>0)&&r.host.split(\"@\"))&&(r.auth=x.shift(),r.host=r.hostname=x.shift())),(_=_||r.host&&E.length)&&!I&&E.unshift(\"\"),E.length?r.pathname=E.join(\"/\"):(r.pathname=null,r.path=null),i.isNull(r.pathname)&&i.isNull(r.search)||(r.path=(r.pathname?r.pathname:\"\")+(r.search?r.search:\"\")),r.auth=e.auth||r.auth,r.slashes=r.slashes||e.slashes,r.href=r.format(),r},o.prototype.parseHost=function(){var e=this.host,t=a.exec(e);t&&(\":\"!==(t=t[0])&&(this.port=t.substr(1)),e=e.substr(0,e.length-t.length)),e&&(this.hostname=e)}},2502:e=>{\"use strict\";e.exports={isString:function(e){return\"string\"==typeof e},isObject:function(e){return\"object\"==typeof e&&null!==e},isNull:function(e){return null===e},isNullOrUndefined:function(e){return null==e}}},7067:()=>{}},t={};function r(n){var i=t[n];if(void 0!==i)return i.exports;var o=t[n]={id:n,loaded:!1,exports:{}};return e[n].call(o.exports,o,o.exports,r),o.loaded=!0,o.exports}r.n=e=>{var t=e&&e.__esModule?()=>e.default:()=>e;return r.d(t,{a:t}),t},r.d=(e,t)=>{for(var n in t)r.o(t,n)&&!r.o(e,n)&&Object.defineProperty(e,n,{enumerable:!0,get:t[n]})},r.g=function(){if(\"object\"==typeof globalThis)return globalThis;try{return this||new Function(\"return this\")()}catch(e){if(\"object\"==typeof window)return window}}(),r.o=(e,t)=>Object.prototype.hasOwnProperty.call(e,t),r.r=e=>{\"undefined\"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:\"Module\"}),Object.defineProperty(e,\"__esModule\",{value:!0})},r.nmd=e=>(e.paths=[],e.children||(e.children=[]),e);var n=r(5590);\n    //window.gmodCRAM=n\n    return n;\n};\n\nconst gmodCRAM = fn()\n\nexport default gmodCRAM\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2018 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport gmodCRAM from \"../vendor/cram-bundle.js\"\nimport AlignmentContainer from \"../bam/alignmentContainer.js\"\nimport BamUtils from \"../bam/bamUtils.js\"\nimport BamAlignment from \"../bam/bamAlignment.js\"\nimport AlignmentBlock from \"../bam/alignmentBlock.js\"\nimport {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\n\nconst READ_STRAND_FLAG = 0x10\nconst MATE_STRAND_FLAG = 0x20\n\nconst CRAM_MATE_STRAND_FLAG = 0x1\nconst CRAM_MATE_MAPPED_FLAG = 0x2\n\n/**\n * Class for reading a cram file.  Wraps the gMOD Cram package.\n *\n * @param config\n * @constructor\n */\nclass CramReader {\n\n    constructor(config, genome, browser) {\n\n        this.config = config\n        this.browser = browser\n        this.genome = genome\n\n        this.cramFile = new gmodCRAM.CramFile({\n            filehandle: new FileHandler(config.url, config),\n            seqFetch: config.seqFetch || seqFetch.bind(this),\n            checkSequenceMD5: config.checkSequenceMD5 !== undefined ? config.checkSequenceMD5 : true\n        })\n\n        const indexFileHandle = new FileHandler(config.indexURL, config)\n        this.indexedCramFile = new gmodCRAM.IndexedCramFile({\n            cram: this.cramFile,\n            index: new gmodCRAM.CraiIndex({\n                filehandle: indexFileHandle\n            }),\n            fetchSizeLimit: 30000000\n        })\n\n        BamUtils.setReaderDefaults(this, config)\n\n        function seqFetch(seqID, start, end) {\n\n            const sequence = this.genome.sequence\n            const genome = this.genome\n\n            return this.getHeader()\n                .then(function (header) {\n                    const chr = genome.getChromosomeName(header.chrNames[seqID])\n                    return sequence.getSequence(chr, start - 1, end)\n                })\n        }\n    }\n\n\n    /**\n     * Parse the sequence dictionary from the SAM header and build chr name tables.  This function\n     * is public so it can be unit tested.\n     *\n     * @returns {PromiseLike<chrName, chrToIndex, chrAliasTable}>}\n     */\n\n    async getHeader() {\n\n        if (!this.header) {\n            const genome = this.genome\n            const samHeader = await this.cramFile.getSamHeader()\n            const chrToIndex = {}\n            const chrNames = []\n            const chrAliasTable = {}\n            const readGroups = []\n\n            for (let line of samHeader) {\n                if ('SQ' === line.tag) {\n                    for (let d of line.data) {\n                        if (d.tag === \"SN\") {\n                            const seq = d.value\n                            chrToIndex[seq] = chrNames.length\n                            chrNames.push(seq)\n                            if (genome) {\n                                const alias = genome.getChromosomeName(seq)\n                                chrAliasTable[alias] = seq\n                            }\n                            break\n                        }\n                    }\n                } else if ('RG' === line.tag) {\n                    readGroups.push(line.data)\n                }\n            }\n\n            this.header = {\n                chrNames: chrNames,\n                chrToIndex: chrToIndex,\n                chrAliasTable: chrAliasTable,\n                readGroups: readGroups\n            }\n        }\n\n        return this.header\n    }\n\n    async readAlignments(chr, bpStart, bpEnd) {\n\n        const browser = this.browser\n        const header = await this.getHeader()\n        const queryChr = header.chrAliasTable.hasOwnProperty(chr) ? header.chrAliasTable[chr] : chr\n        const chrIdx = header.chrToIndex[queryChr]\n        const alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, this.config)\n\n        if (chrIdx === undefined) {\n            return alignmentContainer\n\n        } else {\n\n            try {\n                const records = await this.indexedCramFile.getRecordsForRange(chrIdx, bpStart, bpEnd)\n\n                for (let record of records) {\n\n                    const refID = record.sequenceId\n                    const pos = record.alignmentStart\n                    const alignmentEnd = pos + record.lengthOnRef\n\n                    if (refID < 0) {\n                        continue   // unmapped read\n                    } else if (refID > chrIdx || pos > bpEnd) {\n                        return    // off right edge, we're done\n                    } else if (refID < chrIdx) {\n                        continue   // Sequence to left of start, not sure this is possible\n                    }\n                    if (alignmentEnd < bpStart) {\n                        continue\n                    }  // Record out-of-range \"to the left\", skip to next one\n\n                    const alignment = decodeCramRecord(record, header.chrNames)\n\n                    if (this.filter.pass(alignment)) {\n                        alignmentContainer.push(alignment)\n                    }\n                }\n\n                alignmentContainer.finish()\n                return alignmentContainer\n            } catch (error) {\n                let message = error.message\n                if (message && message.indexOf(\"MD5\") >= 0) {\n                    message = \"Sequence mismatch. Is this the correct genome for the loaded CRAM?\"\n                }\n                this.browser.alert.present(new Error(message))\n                throw error\n            }\n        }\n\n        function decodeCramRecord(record, chrNames) {\n\n            const alignment = new BamAlignment()\n\n            alignment.chr = chrNames[record.sequenceId]\n            alignment.start = record.alignmentStart - 1\n            alignment.lengthOnRef = record.lengthOnRef\n            alignment.flags = record.flags\n            alignment.strand = !(record.flags & READ_STRAND_FLAG)\n            alignment.fragmentLength = record.templateLength || record.templateSize\n            alignment.mq = record.mappingQuality\n            alignment.end = record.alignmentStart + record.lengthOnRef\n            alignment.readGroupId = record.readGroupId\n\n            if (record.mate && record.mate.sequenceId !== undefined) {\n                const strand = record.mate.flags !== undefined ?\n                    !(record.mate.flags & CRAM_MATE_STRAND_FLAG) :\n                    !(record.flags & MATE_STRAND_FLAG)\n\n                alignment.mate = {\n                    chr: chrNames[record.mate.sequenceId],\n                    position: record.mate.alignmentStart,\n                    strand: strand\n                }\n            }\n\n            alignment.seq = record.getReadBases()\n            alignment.qual = record.qualityScores\n            alignment.tagDict = record.tags\n            alignment.readName = record.readName\n\n            // TODO -- cigar encoded in tag?\n            // BamUtils.bam_tag2cigar(ba, blockEnd, p, lseq, alignment, cigarArray);\n\n            makeBlocks(record, alignment)\n\n            if (alignment.mate && alignment.start > alignment.mate.position && alignment.fragmentLength > 0) {\n                alignment.fragmentLength = -alignment.fragmentLength\n            }\n\n            BamUtils.setPairOrientation(alignment)\n\n            return alignment\n\n        }\n\n        function makeBlocks(cramRecord, alignment) {\n\n            const blocks = []\n            let insertions\n            let gaps\n            let basesUsed = 0\n            let cigarString = ''\n\n            alignment.scStart = alignment.start\n            alignment.scLengthOnRef = alignment.lengthOnRef\n\n            if (cramRecord.readFeatures) {\n\n                for (let feature of cramRecord.readFeatures) {\n\n                    const code = feature.code\n                    const data = feature.data\n                    const readPos = feature.pos - 1\n                    const refPos = feature.refPos - 1\n\n                    switch (code) {\n                        case 'S' :\n                        case 'I':\n                        case 'i':\n                        case 'N':\n                        case 'D':\n                            if (readPos > basesUsed) {\n                                const len = readPos - basesUsed\n                                blocks.push(new AlignmentBlock({\n                                    start: refPos - len,\n                                    seqOffset: basesUsed,\n                                    len: len,\n                                    type: 'M'\n                                }))\n                                basesUsed += len\n                                cigarString += len + 'M'\n                            }\n\n                            if ('S' === code) {\n                                let scPos = refPos\n                                alignment.scLengthOnRef += data.length\n                                if (readPos === 0) {\n                                    alignment.scStart -= data.length\n                                    scPos -= data.length\n                                }\n                                const len = data.length\n                                blocks.push(new AlignmentBlock({\n                                    start: scPos,\n                                    seqOffset: basesUsed,\n                                    len: len,\n                                    type: 'S'\n                                }))\n                                basesUsed += len\n                                cigarString += len + code\n                            } else if ('I' === code || 'i' === code) {\n                                if (insertions === undefined) {\n                                    insertions = []\n                                }\n                                const len = 'i' === code ? 1 : data.length\n                                insertions.push(new AlignmentBlock({\n                                    start: refPos,\n                                    len: len,\n                                    seqOffset: basesUsed,\n                                    type: 'I'\n                                }))\n                                basesUsed += len\n                                cigarString += len + code\n                            } else if ('D' === code || 'N' === code) {\n                                if (!gaps) {\n                                    gaps = []\n                                }\n                                gaps.push({\n                                    start: refPos,\n                                    len: data,\n                                    type: code\n                                })\n                                cigarString += data + code\n                            }\n                            break\n\n                        case 'H':\n                        case 'P':\n                            cigarString += data + code\n                            break\n                        default :\n                        //  Ignore\n                    }\n                }\n            }\n\n            // Last block\n            const len = cramRecord.readLength - basesUsed\n            if (len > 0) {\n                blocks.push(new AlignmentBlock({\n                    start: cramRecord.alignmentStart + cramRecord.lengthOnRef - len - 1,\n                    seqOffset: basesUsed,\n                    len: len,\n                    type: 'M'\n                }))\n\n                cigarString += len + 'M'\n            }\n\n            alignment.blocks = blocks\n            alignment.insertions = insertions\n            alignment.gaps = gaps\n            alignment.cigar = cigarString\n\n        }\n\n    }\n}\n\nclass FileHandler {\n\n    constructor(source, config) {\n        this.position = 0\n        this.url = source\n        this.config = config\n        this.cache = new BufferCache({\n            fetch: (start, length) => this._fetch(start, length),\n        })\n    }\n\n    async _fetch(position, length) {\n\n        const loadRange = {start: position, size: length}\n        this._stat = {size: undefined}\n        const arrayBuffer = await igvxhr.loadArrayBuffer(this.url, buildOptions(this.config, {range: loadRange}))\n        return Buffer.from(arrayBuffer)\n    }\n\n    async read(buffer, offset = 0, length = Infinity, position = 0) {\n        let readPosition = position\n        if (readPosition === null) {\n            readPosition = this.position\n            this.position += length\n        }\n        return this.cache.get(buffer, offset, length, position)\n    }\n\n    async readFile() {\n        const arrayBuffer = await igvxhr.loadArrayBuffer(this.url, buildOptions(this.config))\n        return Buffer.from(arrayBuffer)\n    }\n\n    async stat() {\n        if (!this._stat) {\n            const buf = Buffer.allocUnsafe(10)\n            await this.read(buf, 0, 10, 0)\n            if (!this._stat)\n                throw new Error(`unable to determine size of file at ${this.url}`)\n        }\n        return this._stat\n    }\n}\n\nclass BufferCache {\n\n    constructor({fetch, size = 10000000, chunkSize = 32768}) {\n\n        this.fetch = fetch\n        this.chunkSize = chunkSize\n        this.lruCache = new QuickLRU({maxSize: Math.floor(size / chunkSize)})\n    }\n\n    async get(outputBuffer, offset, length, position) {\n        if (outputBuffer.length < offset + length)\n            throw new Error('output buffer not big enough for request')\n\n        // calculate the list of chunks involved in this fetch\n        const firstChunk = Math.floor(position / this.chunkSize)\n        const lastChunk = Math.floor((position + length) / this.chunkSize)\n\n        // fetch them all as necessary\n        const fetches = new Array(lastChunk - firstChunk + 1)\n        for (let chunk = firstChunk; chunk <= lastChunk; chunk += 1) {\n            fetches[chunk - firstChunk] = this._getChunk(chunk).then(data => ({\n                data,\n                chunkNumber: chunk,\n            }))\n        }\n\n        // stitch together the response buffer using them\n        const chunks = await Promise.all(fetches)\n        const chunksOffset = position - chunks[0].chunkNumber * this.chunkSize\n        chunks.forEach(({data, chunkNumber}) => {\n            const chunkPositionStart = chunkNumber * this.chunkSize\n            let copyStart = 0\n            let copyEnd = this.chunkSize\n            let copyOffset =\n                offset + (chunkNumber - firstChunk) * this.chunkSize - chunksOffset\n\n            if (chunkNumber === firstChunk) {\n                copyOffset = offset\n                copyStart = chunksOffset\n            }\n            if (chunkNumber === lastChunk) {\n                copyEnd = position + length - chunkPositionStart\n            }\n\n            data.copy(outputBuffer, copyOffset, copyStart, copyEnd)\n        })\n    }\n\n    _getChunk(chunkNumber) {\n        const cachedPromise = this.lruCache.get(chunkNumber)\n        if (cachedPromise) return cachedPromise\n\n        const freshPromise = this.fetch(\n            chunkNumber * this.chunkSize,\n            this.chunkSize,\n        )\n        this.lruCache.set(chunkNumber, freshPromise)\n        return freshPromise\n    }\n}\n\n\n// From https://github.com/sindresorhus/quick-lru\n// MIT License\n//\n// Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)\n//\n// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the \"Software\"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:\n//\n//     The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.\n//\n//     THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n'use strict'\n\nclass QuickLRU {\n    constructor(options = {}) {\n        if (!(options.maxSize && options.maxSize > 0)) {\n            throw new TypeError('`maxSize` must be a number greater than 0')\n        }\n\n        this.maxSize = options.maxSize\n        this.cache = new Map()\n        this.oldCache = new Map()\n        this._size = 0\n    }\n\n    _set(key, value) {\n        this.cache.set(key, value)\n        this._size++\n\n        if (this._size >= this.maxSize) {\n            this._size = 0\n            this.oldCache = this.cache\n            this.cache = new Map()\n        }\n    }\n\n    get(key) {\n        if (this.cache.has(key)) {\n            return this.cache.get(key)\n        }\n\n        if (this.oldCache.has(key)) {\n            const value = this.oldCache.get(key)\n            this._set(key, value)\n            return value\n        }\n    }\n\n    set(key, value) {\n        if (this.cache.has(key)) {\n            this.cache.set(key, value)\n        } else {\n            this._set(key, value)\n        }\n\n        return this\n    }\n\n    has(key) {\n        return this.cache.has(key) || this.oldCache.has(key)\n    }\n\n    peek(key) {\n        if (this.cache.has(key)) {\n            return this.cache.get(key)\n        }\n\n        if (this.oldCache.has(key)) {\n            return this.oldCache.get(key)\n        }\n    }\n\n    delete(key) {\n        const deleted = this.cache.delete(key)\n        if (deleted) {\n            this._size--\n        }\n\n        return this.oldCache.delete(key) || deleted\n    }\n\n    clear() {\n        this.cache.clear()\n        this.oldCache.clear()\n        this._size = 0\n    }\n\n    * keys() {\n        for (const [key] of this) {\n            yield key\n        }\n    }\n\n    * values() {\n        for (const [, value] of this) {\n            yield value\n        }\n    }\n\n    * [Symbol.iterator]() {\n        for (const item of this.cache) {\n            yield item\n        }\n\n        for (const item of this.oldCache) {\n            const [key] = item\n            if (!this.cache.has(key)) {\n                yield item\n            }\n        }\n    }\n\n    get size() {\n        let oldCacheSize = 0\n        for (const key of this.oldCache.keys()) {\n            if (!this.cache.has(key)) {\n                oldCacheSize++\n            }\n        }\n\n        return this._size + oldCacheSize\n    }\n}\n\nexport default CramReader\n\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport AlignmentContainer from \"../bam/alignmentContainer.js\"\nimport BamAlignment from \"../bam/bamAlignment.js\"\nimport AlignmentBlock from \"../bam/alignmentBlock.js\"\nimport {ga4ghGet, ga4ghSearch} from './ga4ghHelper.js'\nimport BamFilter from \"../bam/bamFilter.js\"\n\nvar CigarOperationTable = {\n    \"ALIGNMENT_MATCH\": \"M\",\n    \"INSERT\": \"I\",\n    \"DELETE\": \"D\",\n    \"SKIP\": \"N\",\n    \"CLIP_SOFT\": \"S\",\n    \"CLIP_HARD\": \"H\",\n    \"PAD\": \"P\",\n    \"SEQUENCE_MATCH\": \"=\",\n    \"SEQUENCE_MISMATCH\": \"X\"\n}\n\nconst Ga4ghAlignmentReader = function (config, genome) {\n\n    this.config = config\n    this.genome = genome\n    this.url = config.url\n    this.filter = new BamFilter(config.filter)\n    this.readGroupSetIds = config.readGroupSetIds\n    this.authKey = config.authKey   // Might be undefined or nill\n\n    this.samplingWindowSize = config.samplingWindowSize === undefined ? 100 : config.samplingWindowSize\n    this.samplingDepth = config.samplingDepth === undefined ? 1000 : config.samplingDepth\n    if (config.viewAsPairs) {\n        this.pairsSupported = true\n    } else {\n        this.pairsSupported = config.pairsSupported === undefined ? true : config.pairsSupported\n    }\n}\n\n\nGa4ghAlignmentReader.prototype.readAlignments = function (chr, bpStart, bpEnd) {\n\n    const genome = this.genome\n    const self = this\n\n    return getChrAliasTable()\n\n        .then(function (chrAliasTable) {\n\n            var queryChr = chrAliasTable.hasOwnProperty(chr) ? chrAliasTable[chr] : chr,\n                readURL = self.url + \"/reads/search\"\n\n            return ga4ghSearch({\n                url: readURL,\n                body: {\n                    \"readGroupSetIds\": [self.readGroupSetIds],\n                    \"referenceName\": queryChr,\n                    \"start\": bpStart,\n                    \"end\": bpEnd,\n                    \"pageSize\": \"10000\"\n                },\n                decode: decodeGa4ghReads,\n                results: new AlignmentContainer(chr, bpStart, bpEnd, self.config)\n            })\n        })\n\n\n    function getChrAliasTable() {\n\n        if (self.chrAliasTable) {\n\n            return Promise.resolve(self.chrAliasTable)\n\n        } else {\n\n            return self.readMetadata()\n\n                .then(function (json) {\n\n                    self.chrAliasTable = {}\n\n                    if (genome && json.readGroups && json.readGroups.length > 0) {\n\n                        var referenceSetId = json.readGroups[0].referenceSetId\n\n                        if (referenceSetId) {\n\n                            // Query for reference names to build an alias table (map of genome ref names -> dataset ref names)\n                            var readURL = self.url + \"/references/search\"\n\n                            return ga4ghSearch({\n                                url: readURL,\n                                body: {\n                                    \"referenceSetId\": referenceSetId\n                                },\n                                decode: function (j) {\n                                    return j.references\n                                }\n                            })\n                                .then(function (references) {\n\n\n                                    references.forEach(function (ref) {\n                                        var refName = ref.name,\n                                            alias = genome.getChromosomeName(refName)\n                                        self.chrAliasTable[alias] = refName\n                                    })\n\n\n                                    return self.chrAliasTable\n\n                                })\n                        } else {\n\n                            // Try hardcoded constants -- workaround for non-compliant data at Google\n                            populateChrAliasTable(self.chrAliasTable, self.config.datasetId)\n\n                            return self.chrAliasTable\n                        }\n                    } else {\n                        // No browser object, can't build map.  This can occur when run from unit tests\n                        return self.chrAliasTable\n                    }\n                })\n        }\n    }\n\n    /**\n     * Decode an array of ga4gh read records\n     *\n\n     */\n    function decodeGa4ghReads(j) {\n\n        var i,\n            jsonRecords = j.alignments,\n            len = jsonRecords.length,\n            alignment,\n            jsonAlignment,\n            cigarDecoded,\n            alignments = [],\n            mate,\n            blocks\n\n        for (i = 0; i < len; i++) {\n\n            let record = jsonRecords[i]\n\n            alignment = new BamAlignment()\n\n            alignment.readName = record.fragmentName\n            alignment.properPlacement = record.properPlacement\n            alignment.duplicateFragment = record.duplicateFragment\n            alignment.numberReads = record.numberReads\n            alignment.fragmentLength = record.fragmentLength\n            alignment.readNumber = record.readNumber\n            alignment.failedVendorQualityChecks = record.failedVendorQualityChecks\n            alignment.secondaryAlignment = record.secondaryAlignment\n            alignment.supplementaryAlignment = record.supplementaryAlignment\n            alignment.seq = record.alignedSequence\n            alignment.qual = record.alignedQuality\n            alignment.matePos = record.nextMatePosition\n            alignment.tagDict = record.info\n            alignment.flags = encodeFlags(record)\n\n\n            jsonAlignment = record.alignment\n            if (jsonAlignment) {\n                alignment.mapped = true\n\n                alignment.chr = record.alignment.position.referenceName\n                if (genome) alignment.chr = genome.getChromosomeName(alignment.chr)\n\n                alignment.start = parseInt(record.alignment.position.position)\n                alignment.strand = !(record.alignment.position.reverseStrand)\n                alignment.mq = record.alignment.mappingQuality\n                alignment.cigar = encodeCigar(record.alignment.cigar)\n                cigarDecoded = translateCigar(record.alignment.cigar)\n\n                alignment.lengthOnRef = cigarDecoded.lengthOnRef\n\n                blocks = makeBlocks(alignment, cigarDecoded.array)\n                alignment.blocks = blocks.blocks\n                alignment.insertions = blocks.insertions\n\n            } else {\n                alignment.mapped = false\n            }\n\n            mate = record.nextMatePosition\n            if (mate) {\n                alignment.mate = {\n                    chr: mate.referenceFrame,\n                    position: parseInt(mate.position),\n                    strand: !mate.reverseStrand\n                }\n            }\n\n            if (self.filter.pass(alignment)) {\n                alignments.push(alignment)\n            }\n\n\n        }\n\n        return alignments\n\n\n        // Encode a cigar string -- used for popup text\n        function encodeCigar(cigarArray) {\n\n            var cigarString = \"\"\n            cigarArray.forEach(function (cigarUnit) {\n                var op = CigarOperationTable[cigarUnit.operation],\n                    len = cigarUnit.operationLength\n                cigarString = cigarString + (len + op)\n            })\n\n            return cigarString\n        }\n\n        // TODO -- implement me\n        function encodeFlags(json) {\n            return 0\n        }\n\n        function translateCigar(cigar) {\n\n            var cigarUnit, opLen, opLtr,\n                lengthOnRef = 0,\n                cigarArray = [],\n                i\n\n            for (i = 0; i < cigar.length; i++) {\n\n                cigarUnit = cigar[i]\n\n                opLtr = CigarOperationTable[cigarUnit.operation]\n                opLen = parseInt(cigarUnit.operationLength)    // Google represents long as a String\n\n                if (opLtr === 'M' || opLtr === 'EQ' || opLtr === 'X' || opLtr === 'D' || opLtr === 'N' || opLtr === '=')\n                    lengthOnRef += opLen\n\n                cigarArray.push({len: opLen, ltr: opLtr})\n\n            }\n\n            return {lengthOnRef: lengthOnRef, array: cigarArray}\n        }\n\n\n        /**\n         * Split the alignment record into blocks as specified in the cigarArray.  Each aligned block contains\n         * its portion of the read sequence and base quality strings.  A read sequence or base quality string\n         * of \"*\" indicates the value is not recorded.  In all other cases the length of the block sequence (block.seq)\n         * and quality string (block.qual) must == the block length.\n         *\n         * NOTE: Insertions are not yet treated // TODO\n         *\n         * @param record\n         * @param cigarArray\n         * @returns array of blocks\n         */\n        function makeBlocks(record, cigarArray) {\n\n\n            var blocks = [],\n                gaps,\n                insertions,\n                seqOffset = 0,\n                pos = record.start,\n                len = cigarArray.length,\n                gapType\n\n            for (var i = 0; i < len; i++) {\n\n                var c = cigarArray[i]\n\n                switch (c.ltr) {\n                    case 'H' :\n                        break // ignore hard clips\n                    case 'P' :\n                        break // ignore pads\n                    case 'S' :\n                        seqOffset += c.len\n                        gapType = 'S'\n                        break // soft clip read bases\n                    case 'N' :\n                    case 'D' :\n                        if (gaps === undefined) {\n                            gaps = []\n                        }\n                        gaps.push({\n                            start: pos,\n                            len: c.len,\n                            type: c.ltr\n                        })\n                        pos += c.len\n                        break\n                    case 'I' :\n                        if (insertions === undefined) insertions = []\n                        insertions.push(new AlignmentBlock({\n                            start: pos,\n                            len: c.len,\n                            seqOffset: seqOffset\n                        }))\n                        seqOffset += c.len\n                        break\n                    case 'M' :\n                    case 'EQ' :\n                    case '=' :\n                    case 'X' :\n                        blocks.push(\n                            new AlignmentBlock({\n                                start: pos,\n                                len: c.len,\n                                seqOffset: seqOffset,\n                                gapType: gapType\n                            }))\n                        seqOffset += c.len\n                        pos += c.len\n\n                        break\n\n                    default :\n                        console.log(\"Error processing cigar element: \" + c.len + c.ltr)\n                }\n            }\n\n            return {blocks: blocks, insertions: insertions, gaps: gaps}\n        }\n    }\n}\n\n\nGa4ghAlignmentReader.prototype.readMetadata = function () {\n\n    return ga4ghGet({\n        url: this.url,\n        entity: \"readgroupsets\",\n        entityId: this.readGroupSetIds\n    })\n}\n\n/**\n * Hardcoded hack to work around some non-compliant google datasets\n *\n * @param chrAliasTable\n * @param datasetId\n */\nfunction populateChrAliasTable(chrAliasTable, datasetId) {\n    var i\n    if (\"461916304629\" === datasetId || \"337315832689\" === datasetId) {\n        for (i = 1; i < 23; i++) {\n            chrAliasTable[\"chr\" + i] = i\n        }\n        chrAliasTable[\"chrX\"] = \"X\"\n        chrAliasTable[\"chrY\"] = \"Y\"\n        chrAliasTable[\"chrM\"] = \"MT\"\n    }\n}\n\nexport default Ga4ghAlignmentReader","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport BamReaderNonIndexed from \"./bamReaderNonIndexed.js\"\nimport ShardedBamReader from \"./shardedBamReader.js\"\nimport BamReader from \"./bamReader.js\"\nimport BamWebserviceReader from \"./bamWebserviceReader.js\"\nimport HtsgetBamReader from \"../htsget/htsgetBamReader.js\"\nimport CramReader from \"../cram/cramReader.js\"\nimport Ga4ghAlignmentReader from \"../ga4gh/ga4ghAlignmentReader.js\"\nimport {packAlignmentRows, unpairAlignments} from \"./alignmentUtils.js\"\nimport {isDataURL} from \"../util/igvUtils.js\"\nimport * as TrackUtils from \"../util/trackUtils.js\"\nimport {StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\nclass BamSource {\n\n    constructor(config, browser) {\n\n        const genome = browser.genome\n\n        this.config = config\n        this.genome = genome\n\n        if (isDataURL(config.url)) {\n            this.config.indexed = false\n        }\n\n        if (\"ga4gh\" === config.sourceType) {\n            this.bamReader = new Ga4ghAlignmentReader(config, genome)\n        } else if (\"pysam\" === config.sourceType) {\n            this.bamReader = new BamWebserviceReader(config, genome)\n        } else if (\"htsget\" === config.sourceType) {\n            this.bamReader = new HtsgetBamReader(config, genome)\n        } else if (\"shardedBam\" === config.sourceType) {\n            this.bamReader = new ShardedBamReader(config, genome)\n        } else if (\"cram\" === config.format) {\n            this.bamReader = new CramReader(config, genome, browser)\n        } else {\n            if (!this.config.indexURL && config.indexed !== false) {\n                if (StringUtils.isString(this.config.url)) {\n                    const inferIndexPath = TrackUtils.inferIndexPath(this.config.url, \"bai\")\n                    if (inferIndexPath) {\n                        console.error(`Warning: no indexURL specified for ${this.config.url}.  Guessing ${this.baiPath}`)\n                        this.config.indexURL = inferIndexPath\n                    } else {\n                        console.error(`Warning: no indexURL specified for ${this.config.url}.`)\n                        this.config.indexed = false\n                    }\n                } else {\n                    console.error(`Warning: no indexURL specified for ${this.config.name}.`)\n                    this.config.indexed = false\n                }\n            }\n\n            if (this.config.indexed !== false) { // && this.config.indexURL) {\n                this.bamReader = new BamReader(config, genome)\n            } else {\n                this.bamReader = new BamReaderNonIndexed(config, genome)\n            }\n        }\n\n        this.viewAsPairs = config.viewAsPairs\n        this.showSoftClips = config.showSoftClips\n    }\n\n    setViewAsPairs(bool) {\n        this.viewAsPairs = bool\n    }\n\n    setShowSoftClips(bool) {\n        this.showSoftClips = bool\n    }\n\n    async getAlignments(chr, bpStart, bpEnd) {\n\n        const genome = this.genome\n        const showSoftClips = this.showSoftClips\n\n        const alignmentContainer = await this.bamReader.readAlignments(chr, bpStart, bpEnd)\n        let alignments = alignmentContainer.alignments\n        if (!this.viewAsPairs) {\n            alignments = unpairAlignments([{alignments: alignments}])\n        }\n        const hasAlignments = alignments.length > 0\n        alignmentContainer.packedAlignmentRows = packAlignmentRows(alignments, alignmentContainer.start, alignmentContainer.end, showSoftClips)\n\n        this.alignmentContainer = alignmentContainer\n\n        if (hasAlignments) {\n            const sequence = await genome.sequence.getSequence(chr, alignmentContainer.start, alignmentContainer.end)\n            if (sequence) {\n                alignmentContainer.coverageMap.refSeq = sequence    // TODO -- fix this\n                alignmentContainer.sequence = sequence           // TODO -- fix this\n                return alignmentContainer\n            } else {\n                console.error(\"No sequence for: \" + chr + \":\" + alignmentContainer.start + \"-\" + alignmentContainer.end)\n            }\n        }\n        return alignmentContainer\n\n    }\n}\n\nexport default BamSource\n","import IGVGraphics from \"../igv-canvas.js\"\n\nfunction paintAxis(ctx, pixelWidth, pixelHeight) {\n\n    var x1,\n        x2,\n        y1,\n        y2,\n        a,\n        b,\n        reference,\n        shim,\n        font = {\n            'font': 'normal 10px Arial',\n            'textAlign': 'right',\n            'strokeStyle': \"black\"\n        }\n\n    if (undefined === this.dataRange || undefined === this.dataRange.max || undefined === this.dataRange.min) {\n        return\n    }\n\n    let flipAxis = (undefined === this.flipAxis) ? false : this.flipAxis\n\n    IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n\n    reference = 0.95 * pixelWidth\n    x1 = reference - 8\n    x2 = reference\n\n    //shim = 0.5 * 0.125;\n    shim = .01\n    y1 = y2 = shim * pixelHeight\n\n    a = {x: x2, y: y1}\n\n    // tick\n    IGVGraphics.strokeLine(ctx, x1, y1, x2, y2, font)\n    IGVGraphics.fillText(ctx, prettyPrint(flipAxis ? this.dataRange.min : this.dataRange.max), x1 + 4, y1 + 12, font)\n\n    //shim = 0.25 * 0.125;\n    y1 = y2 = (1.0 - shim) * pixelHeight\n\n    b = {x: x2, y: y1}\n\n    // tick\n    IGVGraphics.strokeLine(ctx, x1, y1, x2, y2, font)\n    IGVGraphics.fillText(ctx, prettyPrint(flipAxis ? this.dataRange.max : this.dataRange.min), x1 + 4, y1 - 4, font)\n\n    IGVGraphics.strokeLine(ctx, a.x, a.y, b.x, b.y, font)\n\n    function prettyPrint(number) {\n        // if number >= 100, show whole number\n        // if >= 1 show 1 significant digits\n        // if <  1 show 2 significant digits\n\n        if (number === 0) {\n            return \"0\"\n        } else if (Math.abs(number) >= 10) {\n            return number.toFixed()\n        } else if (Math.abs(number) >= 1) {\n            return number.toFixed(1)\n        } else {\n            return number.toFixed(2)\n        }\n    }\n}\n\nexport default paintAxis\n","import {StringUtils} from \"../node_modules/igv-utils/src/index.js\"\n\nclass Locus {\n\n    constructor({chr, start, end}) {\n        this.chr = chr\n        this.start = start\n        this.end = end\n    }\n\n\n    contains(locus) {\n        return locus.chr === this.chr && locus.start >= this.start && locus.end <= this.end\n    }\n\n    overlaps(locus) {\n        return locus.chr === this.chr && !(locus.end < this.start || locus.start > this.end)\n    }\n\n    extend(l) {\n        if (l.chr !== this.chr) return\n        this.start = Math.min(l.start, this.start)\n        this.end = Math.max(l.end, this.end)\n    }\n\n    getLocusString() {\n        if ('all' === this.chr) {\n            return 'all'\n        } else {\n            const ss = StringUtils.numberFormatter(Math.floor(this.start) + 1)\n            const ee = StringUtils.numberFormatter(Math.round(this.end))\n            return `${this.chr}:${ss}-${ee}`\n        }\n    }\n\n    static fromLocusString(str) {\n        if ('all' === str) {\n            return new Locus({chr: 'all'})\n        }\n        const parts = str.split(':')\n        const chr = parts[0]\n        const se = parts[1].split(\"-\")\n        const start = Number.parseInt(se[0].replace(/,/g, \"\")) - 1\n        const end = Number.parseInt(se[1].replace(/,/g, \"\"))\n        return new Locus({chr, start, end})\n    }\n}\n\nexport default Locus","/*!\n * vanilla-picker v2.12.1\n * https://vanilla-picker.js.org\n *\n * Copyright 2017-2021 Andreas Borgen (https://github.com/Sphinxxxx), Adam Brooks (https://github.com/dissimulate)\n * Released under the ISC license.\n */\nvar classCallCheck = function (instance, Constructor) {\n  if (!(instance instanceof Constructor)) {\n    throw new TypeError(\"Cannot call a class as a function\");\n  }\n};\n\nvar createClass = function () {\n  function defineProperties(target, props) {\n    for (var i = 0; i < props.length; i++) {\n      var descriptor = props[i];\n      descriptor.enumerable = descriptor.enumerable || false;\n      descriptor.configurable = true;\n      if (\"value\" in descriptor) descriptor.writable = true;\n      Object.defineProperty(target, descriptor.key, descriptor);\n    }\n  }\n\n  return function (Constructor, protoProps, staticProps) {\n    if (protoProps) defineProperties(Constructor.prototype, protoProps);\n    if (staticProps) defineProperties(Constructor, staticProps);\n    return Constructor;\n  };\n}();\n\nvar slicedToArray = function () {\n  function sliceIterator(arr, i) {\n    var _arr = [];\n    var _n = true;\n    var _d = false;\n    var _e = undefined;\n\n    try {\n      for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {\n        _arr.push(_s.value);\n\n        if (i && _arr.length === i) break;\n      }\n    } catch (err) {\n      _d = true;\n      _e = err;\n    } finally {\n      try {\n        if (!_n && _i[\"return\"]) _i[\"return\"]();\n      } finally {\n        if (_d) throw _e;\n      }\n    }\n\n    return _arr;\n  }\n\n  return function (arr, i) {\n    if (Array.isArray(arr)) {\n      return arr;\n    } else if (Symbol.iterator in Object(arr)) {\n      return sliceIterator(arr, i);\n    } else {\n      throw new TypeError(\"Invalid attempt to destructure non-iterable instance\");\n    }\n  };\n}();\n\nString.prototype.startsWith = String.prototype.startsWith || function (needle) {\n    return this.indexOf(needle) === 0;\n};\nString.prototype.padStart = String.prototype.padStart || function (len, pad) {\n    var str = this;while (str.length < len) {\n        str = pad + str;\n    }return str;\n};\n\nvar colorNames = { cb: '0f8ff', tqw: 'aebd7', q: '-ffff', qmrn: '7fffd4', zr: '0ffff', bg: '5f5dc', bsq: 'e4c4', bck: '---', nch: 'ebcd', b: '--ff', bvt: '8a2be2', brwn: 'a52a2a', brw: 'deb887', ctb: '5f9ea0', hrt: '7fff-', chcT: 'd2691e', cr: '7f50', rnw: '6495ed', crns: '8dc', crms: 'dc143c', cn: '-ffff', Db: '--8b', Dcn: '-8b8b', Dgnr: 'b8860b', Dgr: 'a9a9a9', Dgrn: '-64-', Dkhk: 'bdb76b', Dmgn: '8b-8b', Dvgr: '556b2f', Drng: '8c-', Drch: '9932cc', Dr: '8b--', Dsmn: 'e9967a', Dsgr: '8fbc8f', DsTb: '483d8b', DsTg: '2f4f4f', Dtrq: '-ced1', Dvt: '94-d3', ppnk: '1493', pskb: '-bfff', mgr: '696969', grb: '1e90ff', rbrc: 'b22222', rwht: 'af0', stg: '228b22', chs: '-ff', gnsb: 'dcdcdc', st: '8f8ff', g: 'd7-', gnr: 'daa520', gr: '808080', grn: '-8-0', grnw: 'adff2f', hnw: '0fff0', htpn: '69b4', nnr: 'cd5c5c', ng: '4b-82', vr: '0', khk: '0e68c', vnr: 'e6e6fa', nrb: '0f5', wngr: '7cfc-', mnch: 'acd', Lb: 'add8e6', Lcr: '08080', Lcn: 'e0ffff', Lgnr: 'afad2', Lgr: 'd3d3d3', Lgrn: '90ee90', Lpnk: 'b6c1', Lsmn: 'a07a', Lsgr: '20b2aa', Lskb: '87cefa', LsTg: '778899', Lstb: 'b0c4de', Lw: 'e0', m: '-ff-', mgrn: '32cd32', nn: 'af0e6', mgnt: '-ff', mrn: '8--0', mqm: '66cdaa', mmb: '--cd', mmrc: 'ba55d3', mmpr: '9370db', msg: '3cb371', mmsT: '7b68ee', '': '-fa9a', mtr: '48d1cc', mmvt: 'c71585', mnLb: '191970', ntc: '5fffa', mstr: 'e4e1', mccs: 'e4b5', vjw: 'dead', nv: '--80', c: 'df5e6', v: '808-0', vrb: '6b8e23', rng: 'a5-', rngr: '45-', rch: 'da70d6', pgnr: 'eee8aa', pgrn: '98fb98', ptrq: 'afeeee', pvtr: 'db7093', ppwh: 'efd5', pchp: 'dab9', pr: 'cd853f', pnk: 'c0cb', pm: 'dda0dd', pwrb: 'b0e0e6', prp: '8-080', cc: '663399', r: '--', sbr: 'bc8f8f', rb: '4169e1', sbrw: '8b4513', smn: 'a8072', nbr: '4a460', sgrn: '2e8b57', ssh: '5ee', snn: 'a0522d', svr: 'c0c0c0', skb: '87ceeb', sTb: '6a5acd', sTgr: '708090', snw: 'afa', n: '-ff7f', stb: '4682b4', tn: 'd2b48c', t: '-8080', thst: 'd8bfd8', tmT: '6347', trqs: '40e0d0', vt: 'ee82ee', whT: '5deb3', wht: '', hts: '5f5f5', w: '-', wgrn: '9acd32' };\n\nfunction printNum(num) {\n    var decs = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;\n\n    var str = decs > 0 ? num.toFixed(decs).replace(/0+$/, '').replace(/\\.$/, '') : num.toString();\n    return str || '0';\n}\n\nvar Color = function () {\n    function Color(r, g, b, a) {\n        classCallCheck(this, Color);\n\n\n        var that = this;\n        function parseString(input) {\n\n            if (input.startsWith('hsl')) {\n                var _input$match$map = input.match(/([\\-\\d\\.e]+)/g).map(Number),\n                    _input$match$map2 = slicedToArray(_input$match$map, 4),\n                    h = _input$match$map2[0],\n                    s = _input$match$map2[1],\n                    l = _input$match$map2[2],\n                    _a = _input$match$map2[3];\n\n                if (_a === undefined) {\n                    _a = 1;\n                }\n\n                h /= 360;\n                s /= 100;\n                l /= 100;\n                that.hsla = [h, s, l, _a];\n            } else if (input.startsWith('rgb')) {\n                var _input$match$map3 = input.match(/([\\-\\d\\.e]+)/g).map(Number),\n                    _input$match$map4 = slicedToArray(_input$match$map3, 4),\n                    _r = _input$match$map4[0],\n                    _g = _input$match$map4[1],\n                    _b = _input$match$map4[2],\n                    _a2 = _input$match$map4[3];\n\n                if (_a2 === undefined) {\n                    _a2 = 1;\n                }\n\n                that.rgba = [_r, _g, _b, _a2];\n            } else {\n                if (input.startsWith('#')) {\n                    that.rgba = Color.hexToRgb(input);\n                } else {\n                    that.rgba = Color.nameToRgb(input) || Color.hexToRgb(input);\n                }\n            }\n        }\n\n        if (r === undefined) ; else if (Array.isArray(r)) {\n            this.rgba = r;\n        } else if (b === undefined) {\n            var color = r && '' + r;\n            if (color) {\n                parseString(color.toLowerCase());\n            }\n        } else {\n            this.rgba = [r, g, b, a === undefined ? 1 : a];\n        }\n    }\n\n    createClass(Color, [{\n        key: 'printRGB',\n        value: function printRGB(alpha) {\n            var rgb = alpha ? this.rgba : this.rgba.slice(0, 3),\n                vals = rgb.map(function (x, i) {\n                return printNum(x, i === 3 ? 3 : 0);\n            });\n\n            return alpha ? 'rgba(' + vals + ')' : 'rgb(' + vals + ')';\n        }\n    }, {\n        key: 'printHSL',\n        value: function printHSL(alpha) {\n            var mults = [360, 100, 100, 1],\n                suff = ['', '%', '%', ''];\n\n            var hsl = alpha ? this.hsla : this.hsla.slice(0, 3),\n                vals = hsl.map(function (x, i) {\n                return printNum(x * mults[i], i === 3 ? 3 : 1) + suff[i];\n            });\n\n            return alpha ? 'hsla(' + vals + ')' : 'hsl(' + vals + ')';\n        }\n    }, {\n        key: 'printHex',\n        value: function printHex(alpha) {\n            var hex = this.hex;\n            return alpha ? hex : hex.substring(0, 7);\n        }\n    }, {\n        key: 'rgba',\n        get: function get() {\n            if (this._rgba) {\n                return this._rgba;\n            }\n            if (!this._hsla) {\n                throw new Error('No color is set');\n            }\n\n            return this._rgba = Color.hslToRgb(this._hsla);\n        },\n        set: function set(rgb) {\n            if (rgb.length === 3) {\n                rgb[3] = 1;\n            }\n\n            this._rgba = rgb;\n            this._hsla = null;\n        }\n    }, {\n        key: 'rgbString',\n        get: function get() {\n            return this.printRGB();\n        }\n    }, {\n        key: 'rgbaString',\n        get: function get() {\n            return this.printRGB(true);\n        }\n    }, {\n        key: 'hsla',\n        get: function get() {\n            if (this._hsla) {\n                return this._hsla;\n            }\n            if (!this._rgba) {\n                throw new Error('No color is set');\n            }\n\n            return this._hsla = Color.rgbToHsl(this._rgba);\n        },\n        set: function set(hsl) {\n            if (hsl.length === 3) {\n                hsl[3] = 1;\n            }\n\n            this._hsla = hsl;\n            this._rgba = null;\n        }\n    }, {\n        key: 'hslString',\n        get: function get() {\n            return this.printHSL();\n        }\n    }, {\n        key: 'hslaString',\n        get: function get() {\n            return this.printHSL(true);\n        }\n    }, {\n        key: 'hex',\n        get: function get() {\n            var rgb = this.rgba,\n                hex = rgb.map(function (x, i) {\n                return i < 3 ? x.toString(16) : Math.round(x * 255).toString(16);\n            });\n\n            return '#' + hex.map(function (x) {\n                return x.padStart(2, '0');\n            }).join('');\n        },\n        set: function set(hex) {\n            this.rgba = Color.hexToRgb(hex);\n        }\n    }], [{\n        key: 'hexToRgb',\n        value: function hexToRgb(input) {\n\n            var hex = (input.startsWith('#') ? input.slice(1) : input).replace(/^(\\w{3})$/, '$1F').replace(/^(\\w)(\\w)(\\w)(\\w)$/, '$1$1$2$2$3$3$4$4').replace(/^(\\w{6})$/, '$1FF');\n\n            if (!hex.match(/^([0-9a-fA-F]{8})$/)) {\n                throw new Error('Unknown hex color; ' + input);\n            }\n\n            var rgba = hex.match(/^(\\w\\w)(\\w\\w)(\\w\\w)(\\w\\w)$/).slice(1).map(function (x) {\n                return parseInt(x, 16);\n            });\n\n            rgba[3] = rgba[3] / 255;\n            return rgba;\n        }\n    }, {\n        key: 'nameToRgb',\n        value: function nameToRgb(input) {\n\n            var hash = input.toLowerCase().replace('at', 'T').replace(/[aeiouyldf]/g, '').replace('ght', 'L').replace('rk', 'D').slice(-5, 4),\n                hex = colorNames[hash];\n            return hex === undefined ? hex : Color.hexToRgb(hex.replace(/\\-/g, '00').padStart(6, 'f'));\n        }\n    }, {\n        key: 'rgbToHsl',\n        value: function rgbToHsl(_ref) {\n            var _ref2 = slicedToArray(_ref, 4),\n                r = _ref2[0],\n                g = _ref2[1],\n                b = _ref2[2],\n                a = _ref2[3];\n\n            r /= 255;\n            g /= 255;\n            b /= 255;\n\n            var max = Math.max(r, g, b),\n                min = Math.min(r, g, b);\n            var h = void 0,\n                s = void 0,\n                l = (max + min) / 2;\n\n            if (max === min) {\n                h = s = 0;\n            } else {\n                var d = max - min;\n                s = l > 0.5 ? d / (2 - max - min) : d / (max + min);\n                switch (max) {\n                    case r:\n                        h = (g - b) / d + (g < b ? 6 : 0);break;\n                    case g:\n                        h = (b - r) / d + 2;break;\n                    case b:\n                        h = (r - g) / d + 4;break;\n                }\n\n                h /= 6;\n            }\n\n            return [h, s, l, a];\n        }\n    }, {\n        key: 'hslToRgb',\n        value: function hslToRgb(_ref3) {\n            var _ref4 = slicedToArray(_ref3, 4),\n                h = _ref4[0],\n                s = _ref4[1],\n                l = _ref4[2],\n                a = _ref4[3];\n\n            var r = void 0,\n                g = void 0,\n                b = void 0;\n\n            if (s === 0) {\n                r = g = b = l;\n            } else {\n                var hue2rgb = function hue2rgb(p, q, t) {\n                    if (t < 0) t += 1;\n                    if (t > 1) t -= 1;\n                    if (t < 1 / 6) return p + (q - p) * 6 * t;\n                    if (t < 1 / 2) return q;\n                    if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;\n                    return p;\n                };\n\n                var q = l < 0.5 ? l * (1 + s) : l + s - l * s,\n                    p = 2 * l - q;\n\n                r = hue2rgb(p, q, h + 1 / 3);\n                g = hue2rgb(p, q, h);\n                b = hue2rgb(p, q, h - 1 / 3);\n            }\n\n            var rgba = [r * 255, g * 255, b * 255].map(Math.round);\n            rgba[3] = a;\n\n            return rgba;\n        }\n    }]);\n    return Color;\n}();\n\nvar EventBucket = function () {\n    function EventBucket() {\n        classCallCheck(this, EventBucket);\n\n        this._events = [];\n    }\n\n    createClass(EventBucket, [{\n        key: 'add',\n        value: function add(target, type, handler) {\n            target.addEventListener(type, handler, false);\n            this._events.push({\n                target: target,\n                type: type,\n                handler: handler\n            });\n        }\n    }, {\n        key: 'remove',\n        value: function remove(target, type, handler) {\n            this._events = this._events.filter(function (e) {\n                var isMatch = true;\n                if (target && target !== e.target) {\n                    isMatch = false;\n                }\n                if (type && type !== e.type) {\n                    isMatch = false;\n                }\n                if (handler && handler !== e.handler) {\n                    isMatch = false;\n                }\n\n                if (isMatch) {\n                    EventBucket._doRemove(e.target, e.type, e.handler);\n                }\n                return !isMatch;\n            });\n        }\n    }, {\n        key: 'destroy',\n        value: function destroy() {\n            this._events.forEach(function (e) {\n                return EventBucket._doRemove(e.target, e.type, e.handler);\n            });\n            this._events = [];\n        }\n    }], [{\n        key: '_doRemove',\n        value: function _doRemove(target, type, handler) {\n            target.removeEventListener(type, handler, false);\n        }\n    }]);\n    return EventBucket;\n}();\n\nfunction parseHTML(htmlString) {\n\n    var div = document.createElement('div');\n    div.innerHTML = htmlString;\n    return div.firstElementChild;\n}\n\nfunction dragTrack(eventBucket, area, callback) {\n    var dragging = false;\n\n    function clamp(val, min, max) {\n        return Math.max(min, Math.min(val, max));\n    }\n\n    function onMove(e, info, starting) {\n        if (starting) {\n            dragging = true;\n        }\n        if (!dragging) {\n            return;\n        }\n\n        e.preventDefault();\n\n        var bounds = area.getBoundingClientRect(),\n            w = bounds.width,\n            h = bounds.height,\n            x = info.clientX,\n            y = info.clientY;\n\n        var relX = clamp(x - bounds.left, 0, w),\n            relY = clamp(y - bounds.top, 0, h);\n\n        callback(relX / w, relY / h);\n    }\n\n    function onMouse(e, starting) {\n        var button = e.buttons === undefined ? e.which : e.buttons;\n        if (button === 1) {\n            onMove(e, e, starting);\n        } else {\n            dragging = false;\n        }\n    }\n\n    function onTouch(e, starting) {\n        if (e.touches.length === 1) {\n            onMove(e, e.touches[0], starting);\n        } else {\n            dragging = false;\n        }\n    }\n\n    eventBucket.add(area, 'mousedown', function (e) {\n        onMouse(e, true);\n    });\n    eventBucket.add(area, 'touchstart', function (e) {\n        onTouch(e, true);\n    });\n    eventBucket.add(window, 'mousemove', onMouse);\n    eventBucket.add(area, 'touchmove', onTouch);\n    eventBucket.add(window, 'mouseup', function (e) {\n        dragging = false;\n    });\n    eventBucket.add(area, 'touchend', function (e) {\n        dragging = false;\n    });\n    eventBucket.add(area, 'touchcancel', function (e) {\n        dragging = false;\n    });\n}\n\nvar BG_TRANSP = 'linear-gradient(45deg, lightgrey 25%, transparent 25%, transparent 75%, lightgrey 75%) 0 0 / 2em 2em,\\n                   linear-gradient(45deg, lightgrey 25%,       white 25%,       white 75%, lightgrey 75%) 1em 1em / 2em 2em';\nvar HUES = 360;\n\nvar EVENT_KEY = 'keydown',\n    EVENT_CLICK_OUTSIDE = 'mousedown',\n    EVENT_TAB_MOVE = 'focusin';\n\nfunction $(selector, context) {\n    return (context || document).querySelector(selector);\n}\n\nfunction stopEvent(e) {\n\n    e.preventDefault();\n    e.stopPropagation();\n}\nfunction onKey(bucket, target, keys, handler, stop) {\n    bucket.add(target, EVENT_KEY, function (e) {\n        if (keys.indexOf(e.key) >= 0) {\n            if (stop) {\n                stopEvent(e);\n            }\n            handler(e);\n        }\n    });\n}\n\nvar Picker = function () {\n    function Picker(options) {\n        classCallCheck(this, Picker);\n\n\n        this.settings = {\n\n            popup: 'right',\n            layout: 'default',\n            alpha: true,\n            editor: true,\n            editorFormat: 'hex',\n            cancelButton: false,\n            defaultColor: '#0cf'\n        };\n\n        this._events = new EventBucket();\n\n        this.onChange = null;\n\n        this.onDone = null;\n\n        this.onOpen = null;\n\n        this.onClose = null;\n\n        this.setOptions(options);\n    }\n\n    createClass(Picker, [{\n        key: 'setOptions',\n        value: function setOptions(options) {\n            var _this = this;\n\n            if (!options) {\n                return;\n            }\n            var settings = this.settings;\n\n            function transfer(source, target, skipKeys) {\n                for (var key in source) {\n                    if (skipKeys && skipKeys.indexOf(key) >= 0) {\n                        continue;\n                    }\n\n                    target[key] = source[key];\n                }\n            }\n\n            if (options instanceof HTMLElement) {\n                settings.parent = options;\n            } else {\n\n                if (settings.parent && options.parent && settings.parent !== options.parent) {\n                    this._events.remove(settings.parent);\n                    this._popupInited = false;\n                }\n\n                transfer(options, settings);\n\n                if (options.onChange) {\n                    this.onChange = options.onChange;\n                }\n                if (options.onDone) {\n                    this.onDone = options.onDone;\n                }\n                if (options.onOpen) {\n                    this.onOpen = options.onOpen;\n                }\n                if (options.onClose) {\n                    this.onClose = options.onClose;\n                }\n\n                var col = options.color || options.colour;\n                if (col) {\n                    this._setColor(col);\n                }\n            }\n\n            var parent = settings.parent;\n            if (parent && settings.popup && !this._popupInited) {\n\n                var openProxy = function openProxy(e) {\n                    return _this.openHandler(e);\n                };\n\n                this._events.add(parent, 'click', openProxy);\n\n                onKey(this._events, parent, [' ', 'Spacebar', 'Enter'], openProxy);\n\n                this._popupInited = true;\n            } else if (options.parent && !settings.popup) {\n                this.show();\n            }\n        }\n    }, {\n        key: 'openHandler',\n        value: function openHandler(e) {\n            if (this.show()) {\n\n                e && e.preventDefault();\n\n                this.settings.parent.style.pointerEvents = 'none';\n\n                var toFocus = e && e.type === EVENT_KEY ? this._domEdit : this.domElement;\n                setTimeout(function () {\n                    return toFocus.focus();\n                }, 100);\n\n                if (this.onOpen) {\n                    this.onOpen(this.colour);\n                }\n            }\n        }\n    }, {\n        key: 'closeHandler',\n        value: function closeHandler(e) {\n            var event = e && e.type;\n            var doHide = false;\n\n            if (!e) {\n                doHide = true;\n            } else if (event === EVENT_CLICK_OUTSIDE || event === EVENT_TAB_MOVE) {\n\n                var knownTime = (this.__containedEvent || 0) + 100;\n                if (e.timeStamp > knownTime) {\n                    doHide = true;\n                }\n            } else {\n\n                stopEvent(e);\n\n                doHide = true;\n            }\n\n            if (doHide && this.hide()) {\n                this.settings.parent.style.pointerEvents = '';\n\n                if (event !== EVENT_CLICK_OUTSIDE) {\n                    this.settings.parent.focus();\n                }\n\n                if (this.onClose) {\n                    this.onClose(this.colour);\n                }\n            }\n        }\n    }, {\n        key: 'movePopup',\n        value: function movePopup(options, open) {\n\n            this.closeHandler();\n\n            this.setOptions(options);\n            if (open) {\n                this.openHandler();\n            }\n        }\n    }, {\n        key: 'setColor',\n        value: function setColor(color, silent) {\n            this._setColor(color, { silent: silent });\n        }\n    }, {\n        key: '_setColor',\n        value: function _setColor(color, flags) {\n            if (typeof color === 'string') {\n                color = color.trim();\n            }\n            if (!color) {\n                return;\n            }\n\n            flags = flags || {};\n            var c = void 0;\n            try {\n\n                c = new Color(color);\n            } catch (ex) {\n                if (flags.failSilently) {\n                    return;\n                }\n                throw ex;\n            }\n\n            if (!this.settings.alpha) {\n                var hsla = c.hsla;\n                hsla[3] = 1;\n                c.hsla = hsla;\n            }\n            this.colour = this.color = c;\n            this._setHSLA(null, null, null, null, flags);\n        }\n    }, {\n        key: 'setColour',\n        value: function setColour(colour, silent) {\n            this.setColor(colour, silent);\n        }\n    }, {\n        key: 'show',\n        value: function show() {\n            var parent = this.settings.parent;\n            if (!parent) {\n                return false;\n            }\n\n            if (this.domElement) {\n                var toggled = this._toggleDOM(true);\n\n                this._setPosition();\n\n                return toggled;\n            }\n\n            var html = this.settings.template || '<div class=\"picker_wrapper\" tabindex=\"-1\"><div class=\"picker_arrow\"></div><div class=\"picker_hue picker_slider\"><div class=\"picker_selector\"></div></div><div class=\"picker_sl\"><div class=\"picker_selector\"></div></div><div class=\"picker_alpha picker_slider\"><div class=\"picker_selector\"></div></div><div class=\"picker_editor\"><input aria-label=\"Type a color name or hex value\"/></div><div class=\"picker_sample\"></div><div class=\"picker_done\"><button>Ok</button></div><div class=\"picker_cancel\"><button>Cancel</button></div></div>';\n            var wrapper = parseHTML(html);\n\n            this.domElement = wrapper;\n            this._domH = $('.picker_hue', wrapper);\n            this._domSL = $('.picker_sl', wrapper);\n            this._domA = $('.picker_alpha', wrapper);\n            this._domEdit = $('.picker_editor input', wrapper);\n            this._domSample = $('.picker_sample', wrapper);\n            this._domOkay = $('.picker_done button', wrapper);\n            this._domCancel = $('.picker_cancel button', wrapper);\n\n            wrapper.classList.add('layout_' + this.settings.layout);\n            if (!this.settings.alpha) {\n                wrapper.classList.add('no_alpha');\n            }\n            if (!this.settings.editor) {\n                wrapper.classList.add('no_editor');\n            }\n            if (!this.settings.cancelButton) {\n                wrapper.classList.add('no_cancel');\n            }\n            this._ifPopup(function () {\n                return wrapper.classList.add('popup');\n            });\n\n            this._setPosition();\n\n            if (this.colour) {\n                this._updateUI();\n            } else {\n                this._setColor(this.settings.defaultColor);\n            }\n            this._bindEvents();\n\n            return true;\n        }\n    }, {\n        key: 'hide',\n        value: function hide() {\n            return this._toggleDOM(false);\n        }\n    }, {\n        key: 'destroy',\n        value: function destroy() {\n            this._events.destroy();\n            if (this.domElement) {\n                this.settings.parent.removeChild(this.domElement);\n            }\n        }\n    }, {\n        key: '_bindEvents',\n        value: function _bindEvents() {\n            var _this2 = this;\n\n            var that = this,\n                dom = this.domElement,\n                events = this._events;\n\n            function addEvent(target, type, handler) {\n                events.add(target, type, handler);\n            }\n\n            addEvent(dom, 'click', function (e) {\n                return e.preventDefault();\n            });\n\n            dragTrack(events, this._domH, function (x, y) {\n                return that._setHSLA(x);\n            });\n\n            dragTrack(events, this._domSL, function (x, y) {\n                return that._setHSLA(null, x, 1 - y);\n            });\n\n            if (this.settings.alpha) {\n                dragTrack(events, this._domA, function (x, y) {\n                    return that._setHSLA(null, null, null, 1 - y);\n                });\n            }\n\n            var editInput = this._domEdit;\n            {\n                addEvent(editInput, 'input', function (e) {\n                    that._setColor(this.value, { fromEditor: true, failSilently: true });\n                });\n\n                addEvent(editInput, 'focus', function (e) {\n                    var input = this;\n\n                    if (input.selectionStart === input.selectionEnd) {\n                        input.select();\n                    }\n                });\n            }\n\n            this._ifPopup(function () {\n\n                var popupCloseProxy = function popupCloseProxy(e) {\n                    return _this2.closeHandler(e);\n                };\n\n                addEvent(window, EVENT_CLICK_OUTSIDE, popupCloseProxy);\n                addEvent(window, EVENT_TAB_MOVE, popupCloseProxy);\n                onKey(events, dom, ['Esc', 'Escape'], popupCloseProxy);\n\n                var timeKeeper = function timeKeeper(e) {\n                    _this2.__containedEvent = e.timeStamp;\n                };\n                addEvent(dom, EVENT_CLICK_OUTSIDE, timeKeeper);\n\n                addEvent(dom, EVENT_TAB_MOVE, timeKeeper);\n\n                addEvent(_this2._domCancel, 'click', popupCloseProxy);\n            });\n\n            var onDoneProxy = function onDoneProxy(e) {\n                _this2._ifPopup(function () {\n                    return _this2.closeHandler(e);\n                });\n                if (_this2.onDone) {\n                    _this2.onDone(_this2.colour);\n                }\n            };\n            addEvent(this._domOkay, 'click', onDoneProxy);\n            onKey(events, dom, ['Enter'], onDoneProxy);\n        }\n    }, {\n        key: '_setPosition',\n        value: function _setPosition() {\n            var parent = this.settings.parent,\n                elm = this.domElement;\n\n            if (parent !== elm.parentNode) {\n                parent.appendChild(elm);\n            }\n\n            this._ifPopup(function (popup) {\n\n                if (getComputedStyle(parent).position === 'static') {\n                    parent.style.position = 'relative';\n                }\n\n                var cssClass = popup === true ? 'popup_right' : 'popup_' + popup;\n\n                ['popup_top', 'popup_bottom', 'popup_left', 'popup_right'].forEach(function (c) {\n\n                    if (c === cssClass) {\n                        elm.classList.add(c);\n                    } else {\n                        elm.classList.remove(c);\n                    }\n                });\n\n                elm.classList.add(cssClass);\n            });\n        }\n    }, {\n        key: '_setHSLA',\n        value: function _setHSLA(h, s, l, a, flags) {\n            flags = flags || {};\n\n            var col = this.colour,\n                hsla = col.hsla;\n\n            [h, s, l, a].forEach(function (x, i) {\n                if (x || x === 0) {\n                    hsla[i] = x;\n                }\n            });\n            col.hsla = hsla;\n\n            this._updateUI(flags);\n\n            if (this.onChange && !flags.silent) {\n                this.onChange(col);\n            }\n        }\n    }, {\n        key: '_updateUI',\n        value: function _updateUI(flags) {\n            if (!this.domElement) {\n                return;\n            }\n            flags = flags || {};\n\n            var col = this.colour,\n                hsl = col.hsla,\n                cssHue = 'hsl(' + hsl[0] * HUES + ', 100%, 50%)',\n                cssHSL = col.hslString,\n                cssHSLA = col.hslaString;\n\n            var uiH = this._domH,\n                uiSL = this._domSL,\n                uiA = this._domA,\n                thumbH = $('.picker_selector', uiH),\n                thumbSL = $('.picker_selector', uiSL),\n                thumbA = $('.picker_selector', uiA);\n\n            function posX(parent, child, relX) {\n                child.style.left = relX * 100 + '%';\n            }\n            function posY(parent, child, relY) {\n                child.style.top = relY * 100 + '%';\n            }\n\n            posX(uiH, thumbH, hsl[0]);\n\n            this._domSL.style.backgroundColor = this._domH.style.color = cssHue;\n\n            posX(uiSL, thumbSL, hsl[1]);\n            posY(uiSL, thumbSL, 1 - hsl[2]);\n\n            uiSL.style.color = cssHSL;\n\n            posY(uiA, thumbA, 1 - hsl[3]);\n\n            var opaque = cssHSL,\n                transp = opaque.replace('hsl', 'hsla').replace(')', ', 0)'),\n                bg = 'linear-gradient(' + [opaque, transp] + ')';\n\n            this._domA.style.background = bg + ', ' + BG_TRANSP;\n\n            if (!flags.fromEditor) {\n                var format = this.settings.editorFormat,\n                    alpha = this.settings.alpha;\n\n                var value = void 0;\n                switch (format) {\n                    case 'rgb':\n                        value = col.printRGB(alpha);break;\n                    case 'hsl':\n                        value = col.printHSL(alpha);break;\n                    default:\n                        value = col.printHex(alpha);\n                }\n                this._domEdit.value = value;\n            }\n\n            this._domSample.style.color = cssHSLA;\n        }\n    }, {\n        key: '_ifPopup',\n        value: function _ifPopup(actionIf, actionElse) {\n            if (this.settings.parent && this.settings.popup) {\n                actionIf && actionIf(this.settings.popup);\n            } else {\n                actionElse && actionElse();\n            }\n        }\n    }, {\n        key: '_toggleDOM',\n        value: function _toggleDOM(toVisible) {\n            var dom = this.domElement;\n            if (!dom) {\n                return false;\n            }\n\n            var displayStyle = toVisible ? '' : 'none',\n                toggle = dom.style.display !== displayStyle;\n\n            if (toggle) {\n                dom.style.display = displayStyle;\n            }\n            return toggle;\n        }\n    }]);\n    return Picker;\n}();\n\n{\n    var style = document.createElement('style');\n    style.textContent = '.picker_wrapper.no_alpha .picker_alpha{display:none}.picker_wrapper.no_editor .picker_editor{position:absolute;z-index:-1;opacity:0}.picker_wrapper.no_cancel .picker_cancel{display:none}.layout_default.picker_wrapper{display:flex;flex-flow:row wrap;justify-content:space-between;align-items:stretch;font-size:10px;width:25em;padding:.5em}.layout_default.picker_wrapper input,.layout_default.picker_wrapper button{font-size:1rem}.layout_default.picker_wrapper>*{margin:.5em}.layout_default.picker_wrapper::before{content:\"\";display:block;width:100%;height:0;order:1}.layout_default .picker_slider,.layout_default .picker_selector{padding:1em}.layout_default .picker_hue{width:100%}.layout_default .picker_sl{flex:1 1 auto}.layout_default .picker_sl::before{content:\"\";display:block;padding-bottom:100%}.layout_default .picker_editor{order:1;width:6.5rem}.layout_default .picker_editor input{width:100%;height:100%}.layout_default .picker_sample{order:1;flex:1 1 auto}.layout_default .picker_done,.layout_default .picker_cancel{order:1}.picker_wrapper{box-sizing:border-box;background:#f2f2f2;box-shadow:0 0 0 1px silver;cursor:default;font-family:sans-serif;color:#444;pointer-events:auto}.picker_wrapper:focus{outline:none}.picker_wrapper button,.picker_wrapper input{box-sizing:border-box;border:none;box-shadow:0 0 0 1px silver;outline:none}.picker_wrapper button:focus,.picker_wrapper button:active,.picker_wrapper input:focus,.picker_wrapper input:active{box-shadow:0 0 2px 1px #1e90ff}.picker_wrapper button{padding:.4em .6em;cursor:pointer;background-color:#f5f5f5;background-image:linear-gradient(0deg, gainsboro, transparent)}.picker_wrapper button:active{background-image:linear-gradient(0deg, transparent, gainsboro)}.picker_wrapper button:hover{background-color:#fff}.picker_selector{position:absolute;z-index:1;display:block;-webkit-transform:translate(-50%, -50%);transform:translate(-50%, -50%);border:2px solid #fff;border-radius:100%;box-shadow:0 0 3px 1px #67b9ff;background:currentColor;cursor:pointer}.picker_slider .picker_selector{border-radius:2px}.picker_hue{position:relative;background-image:linear-gradient(90deg, red, yellow, lime, cyan, blue, magenta, red);box-shadow:0 0 0 1px silver}.picker_sl{position:relative;box-shadow:0 0 0 1px silver;background-image:linear-gradient(180deg, white, rgba(255, 255, 255, 0) 50%),linear-gradient(0deg, black, rgba(0, 0, 0, 0) 50%),linear-gradient(90deg, #808080, rgba(128, 128, 128, 0))}.picker_alpha,.picker_sample{position:relative;background:linear-gradient(45deg, lightgrey 25%, transparent 25%, transparent 75%, lightgrey 75%) 0 0/2em 2em,linear-gradient(45deg, lightgrey 25%, white 25%, white 75%, lightgrey 75%) 1em 1em/2em 2em;box-shadow:0 0 0 1px silver}.picker_alpha .picker_selector,.picker_sample .picker_selector{background:none}.picker_editor input{font-family:monospace;padding:.2em .4em}.picker_sample::before{content:\"\";position:absolute;display:block;width:100%;height:100%;background:currentColor}.picker_arrow{position:absolute;z-index:-1}.picker_wrapper.popup{position:absolute;z-index:2;margin:1.5em}.picker_wrapper.popup,.picker_wrapper.popup .picker_arrow::before,.picker_wrapper.popup .picker_arrow::after{background:#f2f2f2;box-shadow:0 0 10px 1px rgba(0,0,0,.4)}.picker_wrapper.popup .picker_arrow{width:3em;height:3em;margin:0}.picker_wrapper.popup .picker_arrow::before,.picker_wrapper.popup .picker_arrow::after{content:\"\";display:block;position:absolute;top:0;left:0;z-index:-99}.picker_wrapper.popup .picker_arrow::before{width:100%;height:100%;-webkit-transform:skew(45deg);transform:skew(45deg);-webkit-transform-origin:0 100%;transform-origin:0 100%}.picker_wrapper.popup .picker_arrow::after{width:150%;height:150%;box-shadow:none}.popup.popup_top{bottom:100%;left:0}.popup.popup_top .picker_arrow{bottom:0;left:0;-webkit-transform:rotate(-90deg);transform:rotate(-90deg)}.popup.popup_bottom{top:100%;left:0}.popup.popup_bottom .picker_arrow{top:0;left:0;-webkit-transform:rotate(90deg) scale(1, -1);transform:rotate(90deg) scale(1, -1)}.popup.popup_left{top:0;right:100%}.popup.popup_left .picker_arrow{top:0;right:0;-webkit-transform:scale(-1, 1);transform:scale(-1, 1)}.popup.popup_right{top:0;left:100%}.popup.popup_right .picker_arrow{top:0;left:0}';\n    document.documentElement.firstElementChild.appendChild(style);\n\n    Picker.StyleElement = style;\n}\n\nfunction getChrColor(chr) {\n    if (chrColorMap[chr]) {\n        return chrColorMap[chr];\n    } else if (chrColorMap[\"chr\" + chr]) {\n        const color = chrColorMap[\"chr\" + chr];\n        chrColorMap[chr] = color;\n        return color;\n    } else {\n        const color = randomRGB();\n        chrColorMap[chr] = color;\n        return color;\n    }\n}\n\nfunction randomRGB (min, max) {\n\n    var r = Math.round(Math.random() * 255).toString(10);\n    var g = Math.round(Math.random() * 255).toString(10);\n    var b = Math.round(Math.random() * 255).toString(10);\n    return \"rgb(\" + r + \",\" + g + \",\" + b + \")\";\n}\n\nconst chrColorMap = {\n    \"chrX\": \"rgb(204, 153, 0)\",\n    \"chrY\": \"rgb(153, 204, 0\",\n    \"chrUn\": \"rgb(50, 50, 50)\",\n    \"chr1\": \"rgb(80, 80, 255)\",\n    \"chrI\": \"rgb(139, 155, 187)\",\n    \"chr2\": \"rgb(206, 61, 50)\",\n    \"chrII\": \"rgb(206, 61, 50)\",\n    \"chr2a\": \"rgb(216, 71, 60)\",\n    \"chr2b\": \"rgb(226, 81, 70)\",\n    \"chr3\": \"rgb(116, 155, 88)\",\n    \"chrIII\": \"rgb(116, 155, 88)\",\n    \"chr4\": \"rgb(240, 230, 133)\",\n    \"chrIV\": \"rgb(240, 230, 133)\",\n    \"chr5\": \"rgb(70, 105, 131)\",\n    \"chr6\": \"rgb(186, 99, 56)\",\n    \"chr7\": \"rgb(93, 177, 221)\",\n    \"chr8\": \"rgb(128, 34, 104)\",\n    \"chr9\": \"rgb(107, 215, 107)\",\n    \"chr10\": \"rgb(213, 149, 167)\",\n    \"chr11\": \"rgb(146, 72, 34)\",\n    \"chr12\": \"rgb(131, 123, 141)\",\n    \"chr13\": \"rgb(199, 81, 39)\",\n    \"chr14\": \"rgb(213, 143, 92)\",\n    \"chr15\": \"rgb(122, 101, 165)\",\n    \"chr16\": \"rgb(228, 175, 105)\",\n    \"chr17\": \"rgb(59, 27, 83)\",\n    \"chr18\": \"rgb(205, 222, 183)\",\n    \"chr19\": \"rgb(97, 42, 121)\",\n    \"chr20\": \"rgb(174, 31, 99)\",\n    \"chr21\": \"rgb(231, 199, 111)\",\n    \"chr22\": \"rgb(90, 101, 94)\",\n    \"chr23\": \"rgb(204, 153, 0)\",\n    \"chr24\": \"rgb(153, 204, 0)\",\n    \"chr25\": \"rgb(51, 204, 0)\",\n    \"chr26\": \"rgb(0, 204, 51)\",\n    \"chr27\": \"rgb(0, 204, 153)\",\n    \"chr28\": \"rgb(0, 153, 204)\",\n    \"chr29\": \"rgb(10, 71, 255)\",\n    \"chr30\": \"rgb(71, 117, 255)\",\n    \"chr31\": \"rgb(255, 194, 10)\",\n    \"chr32\": \"rgb(255, 209, 71)\",\n    \"chr33\": \"rgb(153, 0, 51)\",\n    \"chr34\": \"rgb(153, 26, 0)\",\n    \"chr35\": \"rgb(153, 102, 0)\",\n    \"chr36\": \"rgb(128, 153, 0)\",\n    \"chr37\": \"rgb(51, 153, 0)\",\n    \"chr38\": \"rgb(0, 153, 26)\",\n    \"chr39\": \"rgb(0, 153, 102)\",\n    \"chr40\": \"rgb(0, 128, 153)\",\n    \"chr41\": \"rgb(0, 51, 153)\",\n    \"chr42\": \"rgb(26, 0, 153)\",\n    \"chr43\": \"rgb(102, 0, 153)\",\n    \"chr44\": \"rgb(153, 0, 128)\",\n    \"chr45\": \"rgb(214, 0, 71)\",\n    \"chr46\": \"rgb(255, 20, 99)\",\n    \"chr47\": \"rgb(0, 214, 143)\",\n    \"chr48\": \"rgb(20, 255, 177)\",\n};\n\nclass ChordSetManager {\n\n    constructor(config) {\n        this.tracks = [];\n        this.chordSets = [];\n    }\n\n    addChordSet(chordSet) {\n\n        // If a chord set with this name exists replace it (same track, same region)\n        this.chordSets = this.chordSets.filter(g => g.name !== chordSet.name);\n        this.chordSets.push(chordSet);\n\n        let track = this.tracks.find(t => chordSet.trackName === t.name);\n        if (track) {\n            track.chordSets = track.chordSets.filter(cs => cs.name !== chordSet.name);\n            track.chordSets.push(chordSet);\n        }\n        if (!track) {\n            track = new IGVTrack(chordSet);\n            this.tracks.push(track);\n        }\n    }\n\n    clearChords() {\n        this.tracks = [];\n        this.chordSets = [];\n    }\n\n    getTrack(name) {\n        return this.tracks.find(t => name === t.name)\n    }\n\n    getChordSet(name) {\n        return this.chordSets.find(cs => name === cs.name)\n    }\n\n}\n\nclass IGVTrack {\n    constructor(chordSet) {\n        this.name = chordSet.trackName;\n        this.color = chordSet.trackColor;\n        this.visible = true;\n        this.chordSets = [chordSet];\n        this.id = guid$1();\n    }\n\n    get chords() {\n        if (this.chordSets.length === 1) {\n            return this.chordSets[0].chords\n        }\n        const chords = [];\n        for (let cs of this.chordSets) {\n            for (let c of cs.chords) {\n                chords.push(c);\n            }\n        }\n        return chords\n    }\n}\n\n\nfunction guid$1() {\n    return (\"0000\" + (Math.random() * Math.pow(36, 4) << 0).toString(36)).slice(-4)\n}\n\nconst EXP5 = Math.exp(5);\n\nclass CircularView {\n\n    static isInstalled() {\n        return window[\"JBrowseReactCircularGenomeView\"] !== undefined && window[\"React\"] !== undefined && window[\"ReactDOM\"] !== undefined\n    }\n\n    /**\n     * Create a new CircularView\n     *\n     * @param parent\n     * @param config - configuration options\n     *   {\n     *       assembly: {name: string, id: string, chromosomes: [{name: string, bpLength: integer, color: string}]\n     *       onChordClick: function called upon chord click with chord feature as argument\n     *   }\n     */\n    constructor(parent, config) {\n\n        config = config || {};\n        this.config = config;\n\n        if (CircularView.isInstalled()) {\n\n            this.parent = parent;\n            this.groupByTrack = config.groupByTrack === true;\n            this.chordManager = new ChordSetManager(config);\n\n            // wrapper for toolbar and circular-view container\n            const wrapper = document.createElement('div');\n            wrapper.className = 'igv-circview-container';\n            parent.appendChild(wrapper);\n\n            // toolbar\n            this.createControls(wrapper);\n            this.resetControlPanel();\n\n            // circular view container\n            const element = document.createElement('div');\n            element.className = 'igv-circview-circular-genome-view';\n            wrapper.appendChild(element);\n            this.container = element;\n\n            if (config.assembly) {\n                this.setAssembly(config.assembly);\n            }\n\n            this.width = config.width || 500;\n            this.height = config.height || 500;\n            this.setSize(this.width, this.height);\n\n        } else {\n            console.error(\"JBrowse circular view is not installed\");\n        }\n    }\n\n    createControls(parent) {\n\n        // toolbar\n        const toolbarDiv = document.createElement('div');\n        toolbarDiv.className = 'igv-circview-toolbar';\n        parent.appendChild(toolbarDiv);\n        this.toolbar = toolbarDiv;\n\n        // control panel\n        const controlPanelDiv = document.createElement('div');\n        controlPanelDiv.className = 'igv-circview-track-panel';\n        parent.appendChild(controlPanelDiv);\n        this.controlPanel = controlPanelDiv;\n        this.controlPanel.style.display = 'none';\n\n\n        // toolbar button container - Track Options - Clear All\n        const buttonContainer = document.createElement('div');\n        buttonContainer.className = 'igv-circview-toolbar-button-container';\n        this.toolbar.appendChild(buttonContainer);\n\n        // Show Controls\n        this.showControlsButton = document.createElement('div');\n        this.showControlsButton.className = 'igv-circview-button';\n        buttonContainer.appendChild(this.showControlsButton);\n        this.showControlsButton.innerText = 'none' === this.controlPanel.style.display ? 'Show Controls' : 'Hide Controls';\n        this.showControlsButton.addEventListener('click', (event) => {\n            const panelRows = this.controlPanel.querySelectorAll('div');\n            if (panelRows.length > 0) {\n                if ('none' === this.controlPanel.style.display) {\n                    this.controlPanel.style.display = 'flex';\n                    event.target.innerText = 'Hide Controls';\n                } else {\n                    this.controlPanel.style.display = 'none';\n                    event.target.innerText = 'Show Controls';\n                }\n            }\n        });\n\n        // Clear All\n        let button = document.createElement('div');\n        button.className = 'igv-circview-button';\n        buttonContainer.appendChild(button);\n        button.innerText = 'Clear All';\n        button.addEventListener('click', () => {\n            this.clearChords();\n        });\n\n        // Close\n        if (false !== this.config.showCloseButton) {\n            button = document.createElement('div');\n            button.className = 'igv-circview-button';\n            buttonContainer.appendChild(button);\n            button.innerText = 'Close';\n            button.addEventListener('click', () => {\n                this.visible = false;\n            });\n        }\n    }\n\n    resetControlPanel() {\n        this.controlPanel.innerHTML = '';\n        this.controlPanel.appendChild(this.createGroupByCB());\n        const chordSets = this.groupByTrack ? this.chordManager.tracks : this.chordManager.chordSets;\n        for(let cs of chordSets) {\n            this.addToControlPanel(cs);\n        }\n    }\n\n    createGroupByCB() {\n        const groupByCB = document.createElement('input');\n        groupByCB.type = 'checkbox';\n        groupByCB.id = 'groupByCB';\n        groupByCB.style.width = '1.4em';\n        groupByCB.style.height = '1.4em';\n        groupByCB.checked = this.groupByTrack;\n\n        groupByCB.onclick = (evt) => {\n            this.groupByTrack = evt.target.checked;\n            this.resetControlPanel();\n            this.render();\n        };\n\n        const groupByLabel = document.createElement('label');\n        groupByLabel.for = 'groupByCB';\n        groupByLabel.innerText = 'Group by track';\n        groupByLabel.style.color = 'black';\n        groupByLabel.style.paddingLeft = '10px';\n        const trackPanelRow = document.createElement('div');\n        trackPanelRow.style.width = '100%';\n        trackPanelRow.style.paddingTop = '5px';\n        trackPanelRow.style.paddingBottom = '5px';\n        trackPanelRow.style.background = 'rgb(216, 230, 234)';\n        trackPanelRow.appendChild(groupByCB);\n        trackPanelRow.appendChild(groupByLabel);\n        return trackPanelRow\n    }\n\n    addToControlPanel(chordSet) {\n\n        // single track row - container for hide-button | color-picker-swatch | track-name\n        const row = document.createElement('div');\n        this.controlPanel.appendChild(row);\n\n\n        // track hide|show\n        const hideShowButton = document.createElement('div');\n        hideShowButton.className = 'igv-circview-button';\n        row.appendChild(hideShowButton);\n        hideShowButton.innerText = true === chordSet.visible ? 'Hide' : 'Show';\n        hideShowButton.addEventListener('click', event => {\n            if (true === chordSet.visible) {\n                this.hideChordSet(chordSet.name);\n                event.target.innerText = \"Show\";\n            } else {\n                this.showChordSet(chordSet.name);\n                event.target.innerText = \"Hide\";\n            }\n        });\n\n        // The alpha range slider.  Create this here so we can reference it from the color picker\n        const alphaSlider = document.createElement('input');\n        const valueToAlpha = (value) => Math.exp(value / 200) / EXP5;\n        const alphaToValue = (alpha) => 200 * Math.log(alpha * EXP5);\n\n        // color\n        const colorPickerButton = document.createElement('div');\n        colorPickerButton.className = 'igv-circview-button';\n        colorPickerButton.innerHTML = '&nbsp;&nbsp;&nbsp;&nbsp;';   // <- important for button to size properly\n        row.appendChild(colorPickerButton);\n        colorPickerButton.style.backgroundColor = setAlpha(chordSet.color, 1);\n        const pickerConfig =\n            {\n                parent: colorPickerButton,\n                popup: 'right',\n                editorFormat: 'rgb',\n                color: chordSet.color,\n                onChange: ({rgbaString}) => {\n                    colorPickerButton.style.backgroundColor = setAlpha(rgbaString, 1);\n                    this.setColor(chordSet.name, rgbaString);\n                    alphaSlider.value = alphaToValue(getAlpha(chordSet.color));\n                }\n            };\n        const picker = new Picker(pickerConfig);\n\n        // alpha transparency\n        alphaSlider.setAttribute('title', 'Adjust transparency of arcs');\n        alphaSlider.type = 'range';\n        //alphaSlider.className = 'igv-circview-alpha-slider'\n        alphaSlider.style.width = '100px';\n        alphaSlider.style.marginRight = '10px';\n        alphaSlider.setAttribute('class', 'range');\n        alphaSlider.setAttribute('min', '0');\n        alphaSlider.setAttribute('max', '1000');\n        alphaSlider.value = alphaToValue(getAlpha(chordSet.color));\n        alphaSlider.oninput = () => {\n            const v = valueToAlpha(alphaSlider.value);\n            this.setColor(chordSet.name, setAlpha(chordSet.color, v));\n            picker.setColor(chordSet.color);\n        };\n        row.appendChild(alphaSlider);\n\n        // track name\n        const trackNameDive = document.createElement('div');\n        trackNameDive.style.color = 'black';\n        row.appendChild(trackNameDive);\n        trackNameDive.innerText = trackNameDive.title = chordSet.name;\n\n    }\n\n    /**\n     * Reset view with a new set of chromosomes.\n     *\n     * @param igvGenome {name: string, id: string, chromosomes: [{name: string, bpLength: integer, color: string}\n     */\n    setAssembly(igvGenome) {\n\n        const id = this.genomeId || guid();\n\n        if (this.genomeId === id) {\n            return\n        }\n        this.chordManager.clearChords();\n        this.genomeId = id;\n        this.chrNames = new Set(igvGenome.chromosomes.map(chr => shortChrName(chr.name)));\n\n        const regions = [];\n        const colors = [];\n        for (let chr of igvGenome.chromosomes) {\n            const shortName = shortChrName(chr.name);\n            colors.push(chr.color || getChrColor(shortName));\n            regions.push(\n                {\n                    refName: shortName,\n                    uniqueId: shortName,\n                    start: 0,\n                    end: chr.bpLength\n                }\n            );\n        }\n\n        this.assembly = {\n            name: igvGenome.name,\n            sequence: {\n                trackId: id,\n                type: 'ReferenceSequenceTrack',\n                adapter: {\n                    type: 'FromConfigSequenceAdapter',\n                    features: regions,\n                },\n            },\n            refNameColors: colors\n        };\n\n        this.render();\n\n    }\n\n    /**\n     * Append or replace current set of chords to the global set or a specific track.\n     *\n     * @param newChords array of chord feature objects.  Example:\n     * [\n     *   {\n     *     \"uniqueId\": \"chr1:129763372-129763376_chr1:129806775-129806790\",\n     *     \"color\": \"rgba(0, 0, 255, 0.1)\",\n     *     \"refName\": \"1\",\n     *     \"start\": 129763372,\n     *     \"end\": 129763376,\n     *     \"mate\": {\n     *       \"refName\": \"2\",\n     *       \"start\": 129806775,\n     *       \"end\": 129806790\n     *     }\n     *   }\n     * ]\n     * @param options {\n     *     name: string,    // Track name\n     *     color: string,   // Track color\n     *     append: boolean  // Replace or append chords to current set.  Default is append (true)\n     * }\n     */\n\n    addChords(newChords, options = {}) {\n\n        const tmp = options.name || options.track || \"*\";\n        const trackName = tmp.split(' ')[0].replaceAll(\"%20\", \" \");\n        const chordSetName = tmp.replaceAll(\"%20\", \" \");\n\n        const chordSet =  {\n            name: chordSetName,\n            trackName: trackName,\n            chords: newChords,\n            color: options.color || \"black\",\n            trackColor: options.trackColor || options.color || \"black\",\n            visible: true,\n            id: options.id || guid()\n        };\n\n        this.chordManager.addChordSet(chordSet);\n\n        this.resetControlPanel();\n\n        this.render();\n    }\n\n    /**\n     * Set the nominal size of the view in pixels.  Size is reduced some aribtrary amount to account for borders and margins\n     */\n    setSize(width, height) {\n\n        height = height || width;\n\n        this.width = width;\n        this.height = height;\n        if (this.viewState) {\n            const view = this.viewState.session.view;\n            view.setWidth(width);\n            view.setHeight(height /* this is the height of the area inside the border in pixels */);\n            view.setBpPerPx(view.minBpPerPx);\n        }\n    }\n\n    getSize() {\n        return Math.min(this.width, this.height)\n    }\n\n    clearChords() {\n        //this.tracks = []\n        this.chordManager.clearChords();\n        this.resetControlPanel();\n        this.render();\n    }\n\n    clearSelection() {\n        this.viewState.pluginManager.rootModel.session.clearSelection();\n    }\n\n    /**\n     * Deprecated, use \"visible\" property\n     */\n    show() {\n        this.parent.style.display = 'block';\n    }\n\n    /**\n     * Deprecated, use \"visible\" property\n     */\n    hide() {\n        this.parent.style.display = 'none';\n    }\n\n    get visible() {\n        return this.parent.style.display !== 'none'\n    }\n\n    set visible(isVisible) {\n        this.parent.style.display = isVisible ? 'block' : 'none';\n    }\n\n    hideChordSet(trackName) {\n        let cs = this.getChordSet(trackName);\n        if (cs) {\n            cs.visible = false;\n            this.render();\n        } else {\n            console.warn(`No track with name: ${name}`);\n        }\n    }\n\n    showChordSet(name) {\n        let cs = this.getChordSet(name);\n        if (cs) {\n            cs.visible = true;\n            this.render();\n        } else {\n            console.warn(`No track with name: ${name}`);\n        }\n    }\n\n    // showTrack(trackID) {\n    //     let idx = this.tracks.findIndex(t => trackID === t.id)\n    //     if (idx >= 0) {\n    //         const track = this.tracks[idx]\n    //         track.visible = true\n    //         this.tracks.splice(idx, 1)   // Change z-order\n    //         this.tracks.push(track)\n    //         this.render()\n    //     } else {\n    //         console.warn(`No track with name: ${name}`)\n    //     }\n    // }\n\n    // TODO -- remove corresponding row from track panel\n    deleteTrack(trackID) {\n        let idx = this.tracks.findIndex(t => trackID === t.name);\n        if (idx >= 0) {\n            this.tracks.splice(idx, 1);\n        }\n        this.render();\n    }\n\n    getChordSet(name) {\n        return this.groupByTrack ? this.chordManager.getTrack(name) : this.chordManager.getChordSet(name)\n    }\n\n    setColor(name, color) {\n        const t = this.getChordSet(name);\n        if (t) {\n            t.color = color;\n            const trackID = t.id;\n            for (let jbrowseTrack of this.viewState.config.tracks) {\n                if (trackID === jbrowseTrack.trackId) {\n                    jbrowseTrack.displays[0].renderer.strokeColor.set(color);\n                    break\n                }\n            }\n        }\n    }\n\n    /**\n     * The main render function.  Render here means build the React DOM.  Trying to change react state dynamically\n     * has been buggy, so we completely rebuild the DOM (\"render\") on any state change.\n     */\n    render() {\n\n        const {\n            createViewState,\n            JBrowseCircularGenomeView,\n        } = JBrowseReactCircularGenomeView;\n\n        // Remove all children from possible previous renders.  React might do this for us when we render, but just in case.\n        ReactDOM.unmountComponentAtNode(this.container);\n\n        const visibleChordSets =\n            (this.groupByTrack ? this.chordManager.tracks : this.chordManager.chordSets).filter(t => t.visible);\n\n        const jbrowseTracks = [];\n        const colors = [];\n\n        for (let chordSet of visibleChordSets) {\n\n            jbrowseTracks.push({\n                trackId: chordSet.id,\n                name: chordSet.name,\n                assemblyNames: ['forIGV'],\n                type: 'VariantTrack',\n                adapter: {\n                    type: 'FromConfigAdapter',\n                    features: chordSet.chords,\n                }\n            });\n            colors.push(chordSet.color);\n        }\n\n        this.viewState = createViewState({\n            assembly: this.assembly,\n            tracks: jbrowseTracks,\n        });\n\n        // Set view colors\n        for (let i = 0; i < visibleChordSets.length; i++) {\n            this.viewState.config.tracks[i].displays[0].renderer.strokeColor.set(colors[i]);\n            //this.viewState.config.tracks[i].displays[0].renderer.strokeColor.set(\"jexl:get(feature, 'color') || 'black'\");\n            //this.viewState.config.tracks[i].displays[0].renderer.strokeColorSelected.set(\"jexl:get(feature, 'highlightColor') || 'red'\");\n        }\n\n        this.element = React.createElement(JBrowseCircularGenomeView, {viewState: this.viewState});\n        this.setSize(this.width, this.height);\n\n        ReactDOM.render(this.element, this.container);\n\n        const onChordClick = this.config.onChordClick || defaultOnChordClick;\n        for (let i = 0; i < visibleChordSets.length; i++) {\n            this.viewState.session.view.showTrack(this.viewState.config.tracks[i].trackId);\n            if (onChordClick) {\n                this.viewState.pluginManager.jexl.addFunction('onChordClick', onChordClick);\n                this.viewState.config.tracks[i].displays[0].onChordClick.set(\n                    'jexl:onChordClick(feature, track, pluginManager)'\n                );\n            }\n        }\n    }\n}\n\nfunction setAlpha(rgba, alpha) {\n    const [a, b, c, ignore] = rgba.split(','); // rgba(r g b alpha)\n    return `${a},${b},${c},${alpha})`\n}\n\nfunction getAlpha(rgba) {\n    if (rgba.startsWith(\"rgba(\")) {\n        return Number(rgba.split(',')[3].replace(')', ''))\n    } else {\n        return 1\n    }\n}\n\nfunction shortChrName(chrName) {\n    return chrName.startsWith(\"chr\") ? chrName.substring(3) : chrName\n}\n\nfunction defaultOnChordClick(feature, chordTrack, pluginManager) {\n    console.log(feature);\n}\n\nfunction guid() {\n    return (\"0000\" + (Math.random() * Math.pow(36, 4) << 0).toString(36)).slice(-4)\n}\n\nfunction embedCSS() {\n\n    const css =  '.igv-circview-container {\\n  width: fit-content;\\n  height: fit-content;\\n  box-sizing: content-box;\\n  color: dimgray;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 12px;\\n  background-color: white;\\n  border-color: dimgray;\\n  border-style: solid;\\n  border-width: thin;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-start;\\n}\\n\\n.igv-circview-toolbar {\\n  position: relative;\\n  width: 100%;\\n  height: 32px;\\n  background-color: lightgrey;\\n  border-bottom-style: solid;\\n  border-bottom-color: dimgray;\\n  border-bottom-width: thin;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-between;\\n  align-items: center;\\n}\\n\\n.igv-circview-toolbar-button-container {\\n  height: 100%;\\n  width: fit-content;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-circview-toolbar-button-container > div {\\n  margin: 4px;\\n}\\n\\n.igv-circview-track-panel {\\n  z-index: 1024;\\n  position: absolute;\\n  top: 33px;\\n  left: 0;\\n  width: 100%;\\n  height: fit-content;\\n  border-bottom-style: solid;\\n  border-bottom-color: dimgray;\\n  border-bottom-width: thin;\\n  background-color: white;\\n  display: flex;\\n  flex-flow: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-start;\\n}\\n.igv-circview-track-panel > div {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-circview-track-panel > div > div {\\n  margin: 4px;\\n}\\n\\n.igv-circview-swatch-button {\\n  cursor: pointer;\\n  padding: 5px;\\n  width: 8px;\\n  height: 8px;\\n  border: 1px solid #8d8b8b;\\n  border-radius: 16px;\\n}\\n\\n.igv-circview-button {\\n  cursor: pointer;\\n  padding: 5px;\\n  color: #444;\\n  vertical-align: middle;\\n  text-align: center;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 12px;\\n  border: 1px solid #8d8b8b;\\n  border-radius: 4px;\\n  background: #efefef;\\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.2);\\n}\\n\\n.igv-circview-button:hover {\\n  background: #efefef;\\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.6);\\n}\\n\\n.igv-circview-button:active {\\n  color: #007bff;\\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.6);\\n}\\n\\n/*# sourceMappingURL=circular-view.css.map */\\n';\n\n    const style = document.createElement('style');\n    style.setAttribute('type', 'text/css');\n    style.innerHTML = css;\n    document.head.insertBefore(style, document.head.childNodes[ document.head.childNodes.length - 1 ]);\n}\n\nif(typeof document !== 'undefined') {\n\n    if (!stylesheetExists(\"circular-view.css\")) {\n        embedCSS();\n    }\n\n    function stylesheetExists(stylesheetName) {\n        for (let ss of document.styleSheets) {\n            ss = ss.href ? ss.href.replace(/^.*[\\\\\\/]/, '') : '';\n            if (ss === stylesheetName) {\n                return true;\n            }\n        }\n        return false;\n    }\n}\n\nexport { CircularView };\n","import {getChrColor} from \"../bam/bamTrack.js\"\nimport Locus from \"../locus.js\"\nimport {CircularView} from \"../../node_modules/circular-view/dist/circular-view.js\"\nimport {createSupplementaryAlignments} from \"../bam/supplementaryAlignment.js\"\nimport {IGVColor} from \"../../node_modules/igv-utils/src/index.js\"\n\n/**\n * The minimum length for a VCF structural variant.  VCF records < this length are ignored in the circular view\n * @type {number}\n */\nconst MINIMUM_SV_LENGTH = 1000000\n\nconst circViewIsInstalled = () => CircularView.isInstalled()\n\nconst shortChrName = (chrName) => {\n    return chrName.startsWith(\"chr\") ? chrName.substring(3) : chrName\n}\n\nconst makePairedAlignmentChords = (alignments) => {\n\n    const chords = []\n    for (let a of alignments) {\n\n        if(a.paired) {\n            if(a.firstAlignment && a.secondAlignment) {\n                chords.push({\n                    uniqueId: a.readName,\n                    refName: shortChrName(a.firstAlignment.chr),\n                    start: a.firstAlignment.start,\n                    end: a.firstAlignment.end,\n                    mate: {\n                        refName: shortChrName(a.secondAlignment.chr),\n                        start: a.secondAlignment.start,\n                        end: a.secondAlignment.end,\n                    }\n                })\n            }\n        }\n        else {\n            const mate = a.mate\n            if (mate && mate.chr && mate.position) {\n                chords.push({\n                    uniqueId: a.readName,\n                    refName: shortChrName(a.chr),\n                    start: a.start,\n                    end: a.end,\n                    mate: {\n                        refName: shortChrName(mate.chr),\n                        start: mate.position - 1,\n                        end: mate.position,\n                    }\n                })\n            }\n        }\n    }\n    return chords\n}\n\nconst makeSupplementalAlignmentChords = (alignments) => {\n\n    const makeChords = (a) => {\n        const sa = a.tags()['SA']\n        const supAl = createSupplementaryAlignments(sa)\n        let n = 0\n        for (let s of supAl) {\n            if (s.start !== a.start) {\n                chords.push({\n                    uniqueId: `${a.readName}_${n++}`,\n                    refName: shortChrName(a.chr),\n                    start: a.start,\n                    end: a.end,\n                    mate: {\n                        refName: shortChrName(s.chr),\n                        start: s.start,\n                        end: s.start + s.lenOnRef\n                    }\n                })\n            }\n        }\n    }\n\n    const chords = []\n    for (let a of alignments) {\n        if(a.paired) {\n            makeChords(a.firstAlignment)\n            if(a.secondAlignment) {\n                makeChords(a.secondAlignment)\n            }\n        } else {\n            makeChords(a)\n        }\n    }\n    return chords\n}\n\nconst makeBedPEChords = (features) => {\n\n    return features.map(v => {\n\n        // If v is a whole-genome feature, get the true underlying variant.\n        const f = v._f || v\n\n        return {\n            uniqueId: `${f.chr1}:${f.start1}-${f.end1}_${f.chr2}:${f.start2}-${f.end2}`,\n            refName: shortChrName(f.chr1),\n            start: f.start1,\n            end: f.end1,\n            mate: {\n                refName: shortChrName(f.chr2),\n                start: f.start2,\n                end: f.end2,\n            }\n        }\n    })\n}\n\n\nconst makeVCFChords = (features) => {\n\n    const svFeatures = features.filter(v => {\n        const f = v._f || v\n        const isLargeEnough = f.info && f.info.CHR2 && f.info.END &&\n            (f.info.CHR2 !== f.chr || Math.abs(Number.parseInt(f.info.END) - f.pos) > MINIMUM_SV_LENGTH)\n        return isLargeEnough\n    })\n    return svFeatures.map(v => {\n\n        // If v is a whole-genome feature, get the true underlying variant.\n        const f = v._f || v\n\n        const pos2 = Number.parseInt(f.info.END)\n        const start2 = pos2 - 100\n        const end2 = pos2 + 100\n\n        return {\n            uniqueId: `${f.chr}:${f.start}-${f.end}_${f.info.CHR2}:${f.info.END}`,\n            refName: shortChrName(f.chr),\n            start: f.start,\n            end: f.end,\n            mate: {\n                refName: shortChrName(f.info.CHR2),\n                start: start2,\n                end: end2\n            }\n        }\n    })\n}\n\nfunction makeCircViewChromosomes(genome) {\n    const regions = []\n    const colors = []\n    for (let chrName of genome.wgChromosomeNames) {\n        const chr = genome.getChromosome(chrName)\n        colors.push(getChrColor(chr.name))\n        regions.push(\n            {\n                name: chr.name,\n                bpLength: chr.bpLength\n            }\n        )\n    }\n    return regions\n}\n\nfunction sendChords(chords, track, refFrame, alpha) {\n\n    const baseColor =  track.color || 'rgb(0,0,255)'\n\n    const chordSetColor = IGVColor.addAlpha(\"all\" === refFrame.chr ? baseColor : getChrColor(refFrame.chr), alpha)\n    const trackColor = IGVColor.addAlpha(baseColor, alpha)\n\n    // name the chord set to include locus and filtering information\n    const encodedName = track.name.replaceAll(' ', '%20')\n    const chordSetName = \"all\" === refFrame.chr ? encodedName :\n        `${encodedName}  ${refFrame.chr}:${refFrame.start}-${refFrame.end}`\n    track.browser.circularView.addChords(chords, {track: chordSetName, color: chordSetColor, trackColor: trackColor})\n\n    // show circular view if hidden\n    if(!track.browser.circularViewVisible) track.browser.circularViewVisible = true\n\n}\n\n\nfunction createCircularView(el, browser) {\n\n    const circularView = new CircularView(el, {\n\n        onChordClick: (feature, chordTrack, pluginManager) => {\n\n            const f1 = feature.data\n            const f2 = f1.mate\n            addFrameForFeature(f1)\n            addFrameForFeature(f2)\n\n            function addFrameForFeature(feature) {\n\n                feature.chr = browser.genome.getChromosomeName(feature.refName)\n                let frameFound = false\n                for (let referenceFrame of browser.referenceFrameList) {\n                    const l = Locus.fromLocusString(referenceFrame.getLocusString())\n                    if (l.contains(feature)) {\n                        frameFound = true\n                        break\n                    } else if (l.overlaps(feature)) {\n                        referenceFrame.extend(feature)\n                        frameFound = true\n                        break\n                    }\n                }\n                if (!frameFound) {\n                    const flanking = 2000\n                    const center = (feature.start + feature.end) / 2\n                    browser.addMultiLocusPanel(feature.chr, center - flanking, center + flanking)\n\n                }\n            }\n        }\n    })\n\n    return circularView\n}\n\nexport {\n    circViewIsInstalled,\n    makeBedPEChords,\n    makePairedAlignmentChords,\n    makeSupplementalAlignmentChords,\n    makeVCFChords,\n    createCircularView,\n    makeCircViewChromosomes,\n    sendChords\n}\n\n","class PairedEndStats {\n\n    constructor(alignments, {minTLENPercentile, maxTLENPercentile}) {\n        this.totalCount = 0\n        this.frCount = 0\n        this.rfCount = 0\n        this.ffCount = 0\n        this.sumF = 0\n        this.sumF2 = 0\n        this.lp = minTLENPercentile === undefined ? 0.1 : minTLENPercentile\n        this.up = maxTLENPercentile === undefined ? 99.5 : maxTLENPercentile\n        this.isizes = []\n        this.compute(alignments)\n    }\n\n    compute(alignments) {\n\n        for (let alignment of alignments) {\n            if (alignment.isProperPair()) {\n                var tlen = Math.abs(alignment.fragmentLength)\n                this.sumF += tlen\n                this.sumF2 += tlen * tlen\n                this.isizes.push(tlen)\n\n                var po = alignment.pairOrientation\n\n                if (typeof po === \"string\" && po.length === 4) {\n                    var tmp = '' + po.charAt(0) + po.charAt(2)\n                    switch (tmp) {\n                        case 'FF':\n                        case 'RR':\n                            this.ffCount++\n                            break\n                        case \"FR\":\n                            this.frCount++\n                            break\n                        case\"RF\":\n                            this.rfCount++\n                    }\n                }\n                this.totalCount++\n            }\n        }\n\n        if (this.ffCount / this.totalCount > 0.9) this.orienation = \"ff\"\n        else if (this.frCount / this.totalCount > 0.9) this.orienation = \"fr\"\n        else if (this.rfCount / this.totalCount > 0.9) this.orienation = \"rf\"\n\n        this.minTLEN = this.lp === 0 ? 0 : percentile(this.isizes, this.lp)\n        this.maxTLEN = percentile(this.isizes, this.up)\n\n        // var fMean = this.sumF / this.totalCount\n        // var stdDev = Math.sqrt((this.totalCount * this.sumF2 - this.sumF * this.sumF) / (this.totalCount * this.totalCount))\n        // this.minTLEN = fMean - 3 * stdDev\n        // this.maxTLEN = fMean + 3 * stdDev\n\n    }\n}\n\nfunction percentile(array, p) {\n\n    if (array.length === 0) return undefined\n    var k = Math.floor(array.length * (p / 100))\n    array.sort(function (a, b) {\n        return a - b\n    })\n    return array[k]\n\n}\n\nexport default PairedEndStats\n","import {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst GtexUtils = {\n\n    getTissueInfo: function (datasetId, baseURL) {\n        datasetId = datasetId || 'gtex_v8'\n        baseURL = baseURL || 'https://gtexportal.org/rest/v1'\n        let url = baseURL + '/dataset/tissueInfo?datasetId=' + datasetId\n        return igvxhr.loadJson(url, {})\n    },\n\n    //https://gtexportal.org/rest/v1/association/singleTissueEqtlByLocation?chromosome=7&start=98358766&end=101523798&tissueName=Liver&datasetId=gtex_v7\n    //https://gtexportal.org/rest/v1/association/singleTissueEqtlByLocation?chromosome=7&start=98358766&end=101523798&tissueSiteDetailId=Liver&datasetId=gtex_v8\n    trackConfiguration: function (tissueSummary, baseURL) {\n        baseURL = baseURL || 'https://gtexportal.org/rest/v1'\n        return {\n            type: \"eqtl\",\n            sourceType: \"gtex-ws\",\n            url: baseURL + '/association/singleTissueEqtlByLocation',\n            tissueSiteDetailId: tissueSummary.tissueSiteDetailId,\n            name: (tissueSummary.tissueSiteDetailId.split('_').join(' ')),\n            visibilityWindow: 250000\n        }\n    }\n}\n\nexport default GtexUtils","import GtexUtils from \"../../gtex/gtexUtils.js\"\nimport IGVGraphics from \"../../igv-canvas.js\"\n\n/**\n * @param feature\n * @param bpStart  genomic location of the left edge of the current canvas\n * @param xScale  scale in base-pairs per pixel\n * @returns {{px: number, px1: number, pw: number, h: number, py: number}}\n */\nexport function calculateFeatureCoordinates(feature, bpStart, xScale) {\n    let px = (feature.start - bpStart) / xScale\n    let px1 = (feature.end - bpStart) / xScale\n    //px = Math.round((feature.start - bpStart) / xScale),\n    //px1 = Math.round((feature.end - bpStart) / xScale),\n    let pw = px1 - px\n\n    if (pw < 3) {\n        pw = 3\n        px -= 1.5\n    }\n\n    return {\n        px: px,\n        px1: px1,\n        pw: pw\n    }\n}\n\n/**\n *\n * @param feature\n * @param bpStart  genomic location of the left edge of the current canvas\n * @param xScale  scale in base-pairs per pixel\n * @param pixelHeight  pixel height of the current canvas\n * @param ctx  the canvas 2d context\n * @param options  genomic state\n */\nexport function renderFeature(feature, bpStart, xScale, pixelHeight, ctx, options) {\n\n    try {\n        ctx.save()\n\n        // Set ctx color to a known valid color.  If getColorForFeature returns an invalid color string it is ignored, and\n        // this default will be used.\n        ctx.fillStyle = this.color\n        ctx.strokeStyle = this.color\n\n        const color = this.getColorForFeature(feature)\n        ctx.fillStyle = color\n        ctx.strokeStyle = color\n\n        let h\n        let py\n        if (this.displayMode === \"SQUISHED\" && feature.row !== undefined) {\n            h = this.featureHeight / 2\n            py = this.margin + this.squishedRowHeight * feature.row\n        } else if (this.displayMode === \"EXPANDED\" && feature.row !== undefined) {\n            h = this.featureHeight\n            py = this.margin + this.expandedRowHeight * feature.row\n        } else {  // collapsed\n            h = this.featureHeight\n            py = this.margin\n        }\n\n        const pixelWidth = options.pixelWidth   // typical 3*viewportWidth\n\n        const cy = py + h / 2\n        const h2 = h / 2\n        const py2 = cy - h2 / 2\n\n        const exonCount = feature.exons ? feature.exons.length : 0\n        const coord = calculateFeatureCoordinates(feature, bpStart, xScale)\n        const step = this.arrowSpacing\n        const direction = feature.strand === '+' ? 1 : feature.strand === '-' ? -1 : 0\n\n        if (exonCount === 0) {\n            // single-exon transcript\n            const xLeft = Math.max(0, coord.px)\n            const xRight = Math.min(pixelWidth, coord.px1)\n            const width = xRight - xLeft\n            ctx.fillRect(xLeft, py, width, h)\n\n            // Arrows\n            // Do not draw if strand is not +/-\n            if (direction !== 0) {\n                ctx.fillStyle = \"white\"\n                ctx.strokeStyle = \"white\"\n                for (let x = xLeft + step / 2; x < xRight; x += step) {\n                    // draw arrowheads along central line indicating transcribed orientation\n                    IGVGraphics.strokeLine(ctx, x - direction * 2, cy - 2, x, cy)\n                    IGVGraphics.strokeLine(ctx, x - direction * 2, cy + 2, x, cy)\n                }\n                ctx.fillStyle = color\n                ctx.strokeStyle = color\n            }\n        } else {\n            // multi-exon transcript\n            IGVGraphics.strokeLine(ctx, coord.px + 1, cy, coord.px1 - 1, cy) // center line for introns\n\n\n            const xLeft = Math.max(0, coord.px) + step / 2\n            const xRight = Math.min(pixelWidth, coord.px1)\n            for (let x = xLeft; x < xRight; x += step) {\n                // draw arrowheads along central line indicating transcribed orientation\n                IGVGraphics.strokeLine(ctx, x - direction * 2, cy - 2, x, cy)\n                IGVGraphics.strokeLine(ctx, x - direction * 2, cy + 2, x, cy)\n            }\n            for (let e = 0; e < exonCount; e++) {\n                // draw the exons\n                const exon = feature.exons[e]\n                let ePx = Math.round((exon.start - bpStart) / xScale)\n                let ePx1 = Math.round((exon.end - bpStart) / xScale)\n                let ePw = Math.max(1, ePx1 - ePx)\n                let ePxU\n\n                if (ePx + ePw < 0) {\n                    continue  // Off the left edge\n                }\n                if (ePx > pixelWidth) {\n                    break // Off the right edge\n                }\n\n                if (exon.utr) {\n                    ctx.fillRect(ePx, py2, ePw, h2) // Entire exon is UTR\n                } else {\n                    if (exon.cdStart) {\n                        ePxU = Math.round((exon.cdStart - bpStart) / xScale)\n                        ctx.fillRect(ePx, py2, ePxU - ePx, h2) // start is UTR\n                        ePw -= (ePxU - ePx)\n                        ePx = ePxU\n\n                    }\n                    if (exon.cdEnd) {\n                        ePxU = Math.round((exon.cdEnd - bpStart) / xScale)\n                        ctx.fillRect(ePxU, py2, ePx1 - ePxU, h2) // start is UTR\n                        ePw -= (ePx1 - ePxU)\n                        ePx1 = ePxU\n                    }\n\n                    ePw = Math.max(ePw, 1)\n                    ctx.fillRect(ePx, py, ePw, h)\n\n                    // Arrows\n                    if (ePw > step + 5 && direction !== 0) {\n                        ctx.fillStyle = \"white\"\n                        ctx.strokeStyle = \"white\"\n                        for (let x = ePx + step / 2; x < ePx1; x += step) {\n                            // draw arrowheads along central line indicating transcribed orientation\n                            IGVGraphics.strokeLine(ctx, x - direction * 2, cy - 2, x, cy)\n                            IGVGraphics.strokeLine(ctx, x - direction * 2, cy + 2, x, cy)\n                        }\n                        ctx.fillStyle = color\n                        ctx.strokeStyle = color\n\n                    }\n                }\n            }\n        }\n\n        if (options.drawLabel && this.displayMode !== \"SQUISHED\") {\n            renderFeatureLabel.call(this, ctx, feature, coord.px, coord.px1, py, options.referenceFrame, options)\n        }\n    } finally {\n        ctx.restore()\n    }\n}\n\n/**\n * @param ctx       the canvas 2d context\n * @param feature\n * @param featureX  feature start in pixel coordinates\n * @param featureX1 feature end in pixel coordinates\n * @param featureY  feature y-coordinate\n * @param windowX   visible window start x-coordinate\n * @param windowX1  visible window end x-coordinate\n * @param referenceFrame  genomic state\n * @param options  options\n */\nfunction renderFeatureLabel(ctx, feature, featureX, featureX1, featureY, referenceFrame, options) {\n\n    try {\n        ctx.save()\n\n        let name = feature.name\n        if (name === undefined && feature.gene) name = feature.gene.name\n        if (name === undefined) name = feature.id || feature.ID\n        if (!name || name === '.') return\n\n\n        let pixelXOffset = options.pixelXOffset || 0\n        const t1 = Math.max(featureX, -pixelXOffset)\n        const t2 = Math.min(featureX1, -pixelXOffset + options.viewportWidth)\n        let centerX = (t1 + t2) / 2\n\n        let transform\n        if (this.displayMode === \"COLLAPSED\" && this.labelDisplayMode === \"SLANT\") {\n            transform = {rotate: {angle: 45}}\n        }\n        const labelY = getFeatureLabelY(featureY, transform)\n\n        let color = this.getColorForFeature(feature)\n        let geneColor\n        let gtexSelection = false\n        if (referenceFrame.selection && GtexUtils.gtexLoaded) {\n            // TODO -- for gtex, figure out a better way to do this\n            gtexSelection = true\n            geneColor = referenceFrame.selection.colorForGene(name)\n        }\n\n        const geneFontStyle = {\n            textAlign: \"SLANT\" === this.labelDisplayMode ? undefined : 'center',\n            fillStyle: geneColor || color,\n            strokeStyle: geneColor || color\n        }\n\n        const textBox = ctx.measureText(name)\n        const xleft = centerX - textBox.width / 2\n        const xright = centerX + textBox.width / 2\n        const lastLabelX = options.rowLastLabelX[feature.row] || -Number.MAX_SAFE_INTEGER\n        if (options.labelAllFeatures || xleft > lastLabelX || gtexSelection) {\n            options.rowLastLabelX[feature.row] = xright\n\n            if ('y' === options.axis) {\n                ctx.save()\n                IGVGraphics.labelTransformWithContext(ctx, centerX)\n                IGVGraphics.fillText(ctx, name, centerX, labelY, geneFontStyle, transform)\n                ctx.restore()\n            } else {\n                IGVGraphics.fillText(ctx, name, centerX, labelY, geneFontStyle, transform)\n            }\n        }\n\n    } finally {\n        ctx.restore()\n    }\n}\n\nfunction getFeatureLabelY(featureY, transform) {\n    return transform ? featureY + 20 : featureY + 25\n}\n\n\n","// SNP constants\nimport {calculateFeatureCoordinates} from \"./renderFeature.js\"\n\nconst codingNonSynonSet = new Set(['nonsense', 'missense', 'stop-loss', 'frameshift', 'cds-indel'])\nconst codingSynonSet = new Set(['coding-synon'])\nconst spliceSiteSet = new Set(['splice-3', 'splice-5'])\nconst untranslatedSet = new Set(['untranslated-5', 'untranslated-3'])\nconst locusSet = new Set(['near-gene-3', 'near-gene-5'])\nconst intronSet = new Set(['intron'])\n\n\n/**\n * Renderer for a UCSC snp track\n *\n * @param snp\n * @param bpStart  genomic location of the left edge of the current canvas\n * @param xScale  scale in base-pairs per pixel\n * @param pixelHeight  pixel height of the current canvas\n * @param ctx  the canvas 2d context\n */\nexport function renderSnp(snp, bpStart, xScale, pixelHeight, ctx) {\n\n    var coord = calculateFeatureCoordinates(snp, bpStart, xScale),\n        py = this.margin,\n        h,\n        colorArrLength = this.snpColors.length,\n        colorPriority\n\n    h = this.displayMode === \"squished\" ? this.squishedRowHeight : this.expandedRowHeight\n\n    switch (this.colorBy) {\n        case 'function':\n            colorPriority = colorByFunc(snp.func)\n            break\n        case 'class':\n            colorPriority = colorByClass(snp['class'])\n    }\n\n    ctx.fillStyle = this.snpColors[colorPriority]\n    ctx.fillRect(coord.px, py, coord.pw, h)\n\n    // Coloring functions, convert a value to a priority\n\n    function colorByFunc(theFunc) {\n        var priorities\n        var funcArray = theFunc.split(',')\n        // possible func values\n\n\n        priorities = funcArray.map(function (func) {\n            if (codingNonSynonSet.has(func) || spliceSiteSet.has(func)) {\n                return colorArrLength - 1\n            } else if (codingSynonSet.has(func)) {\n                return colorArrLength - 2\n            } else if (untranslatedSet.has(func)) {\n                return colorArrLength - 3\n            } else { // locusSet.has(func) || intronSet.has(func)\n                return 0\n            }\n        })\n\n        return priorities.reduce(function (a, b) {\n            return Math.max(a, b)\n        })\n    }\n\n    function colorByClass(cls) {\n        if (cls === 'deletion') {\n            return colorArrLength - 1\n        } else if (cls === 'mnp') {\n            return colorArrLength - 2\n        } else if (cls === 'microsatellite' || cls === 'named') {\n            return colorArrLength - 3\n        } else { // cls === 'single' || cls === 'in-del' || cls === 'insertion'\n            return 0\n        }\n    }\n}","/**\n *\n * @param feature\n * @param bpStart  genomic location of the left edge of the current canvas\n * @param xScale  scale in base-pairs per pixel\n * @param pixelHeight  pixel height of the current canvas\n * @param ctx  the canvas 2d context\n */\nexport function renderFusionJuncSpan(feature, bpStart, xScale, pixelHeight, ctx) {\n\n    const rowHeight = (this.displayMode === \"EXPANDED\") ? this.expandedRowHeight : this.squishedRowHeight\n    let py = this.margin\n    if (this.displayMode !== \"COLLAPSED\" && feature.row !== undefined) {\n        py += feature.row * rowHeight\n    }\n\n    const cy = py + 0.5 * rowHeight\n    const topY = cy - 0.5 * rowHeight\n    const bottomY = cy + 0.5 * rowHeight\n\n    // draw the junction arc\n    const junctionLeftPx = Math.round((feature.junction_left - bpStart) / xScale)\n    const junctionRightPx = Math.round((feature.junction_right - bpStart) / xScale)\n\n    ctx.beginPath()\n    ctx.moveTo(junctionLeftPx, cy)\n    ctx.bezierCurveTo(junctionLeftPx, topY, junctionRightPx, topY, junctionRightPx, cy)\n\n    ctx.lineWidth = 1 + Math.log(feature.num_junction_reads) / Math.log(2)\n    ctx.strokeStyle = 'blue'\n    ctx.stroke()\n\n    // draw the spanning arcs\n    const spanningCoords = feature.spanning_frag_coords\n    for (let i = 0; i < spanningCoords.length; i++) {\n\n        const spanningInfo = spanningCoords[i]\n        const spanLeftPx = Math.round((spanningInfo.left - bpStart) / xScale)\n        const spanRightPx = Math.round((spanningInfo.right - bpStart) / xScale)\n\n        ctx.beginPath()\n        ctx.moveTo(spanLeftPx, cy)\n        ctx.bezierCurveTo(spanLeftPx, bottomY, spanRightPx, bottomY, spanRightPx, cy)\n\n        ctx.lineWidth = 1\n        ctx.strokeStyle = 'purple'\n        ctx.stroke()\n    }\n}","import $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport FeatureSource from './featureSource.js'\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport {createCheckbox} from \"../igv-icons.js\"\nimport {reverseComplementSequence} from \"../util/sequenceUtils.js\"\nimport {renderFeature} from \"./render/renderFeature.js\"\nimport {renderSnp} from \"./render/renderSnp.js\"\nimport {renderFusionJuncSpan} from \"./render/renderFusionJunction.js\"\nimport {StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport {ColorTable, PaletteColorTable} from \"../util/colorPalletes.js\"\nimport {isSecureContext} from \"../util/igvUtils.js\"\nimport {IGVColor} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst DEFAULT_COLOR = 'rgb(0, 0, 150)'\n\n\nclass FeatureTrack extends TrackBase {\n\n    static defaults = {\n        type: \"annotation\",\n        maxRows: 1000, // protects against pathological feature packing cases (# of rows of overlapping feaures)\n        displayMode: \"EXPANDED\", // COLLAPSED | EXPANDED | SQUISHED\n        margin: 10,\n        featureHeight: 14,\n        autoHeight: false,\n        useScore: false\n    }\n\n\n    constructor(config, browser) {\n        super(config, browser)\n    }\n\n    init(config) {\n        super.init(config)\n\n\n        // Obscure option, not common or supoorted, included for backward compatibility\n        this.labelDisplayMode = config.labelDisplayMode\n\n        if (config._featureSource) {\n            this.featureSource = config._featureSource\n            delete config._featureSource\n        } else {\n            this.featureSource = config.featureSource ?\n                config.featureSource :\n                FeatureSource(config, this.browser.genome)\n        }\n\n        if (\"FusionJuncSpan\" === config.type) {\n            this.render = config.render || renderFusionJuncSpan\n            this.squishedRowHeight = config.squishedRowHeight || 50\n            this.expandedRowHeight = config.expandedRowHeight || 50\n            this.height = config.height || this.margin + 2 * this.expandedRowHeight\n        } else if ('snp' === config.type) {\n            this.render = config.render || renderSnp\n            // colors ordered based on priority least to greatest\n            this.snpColors = ['rgb(0,0,0)', 'rgb(0,0,255)', 'rgb(0,255,0)', 'rgb(255,0,0)']\n            this.colorBy = 'function'\n            this.expandedRowHeight = config.expandedRowHeight || 10\n            this.squishedRowHeight = config.squishedRowHeight || 5\n            this.height = config.height || 30\n        } else {\n            this.render = config.render || renderFeature\n            this.arrowSpacing = 30\n            // adjust label positions to make sure they're always visible\n            monitorTrackDrag(this)\n            this.squishedRowHeight = config.squishedRowHeight || 15\n            this.expandedRowHeight = config.expandedRowHeight || 30\n            this.height = config.height || this.margin + 2 * this.expandedRowHeight\n\n            // Set colorBy fields considering legacy options for backward compatibility\n            if (config.colorBy) {\n                if (config.colorBy.field) {\n                    config.colorTable = config.colorBy.pallete || config.colorBy.palette\n                    config.colorBy = config.colorBy.field\n                }\n                this.colorBy = config.colorBy   // Can be undefined => default\n                if (config.colorTable) {\n                    this.colorTable = new ColorTable(config.colorTable)\n                } else {\n                    this.colorTable = new PaletteColorTable(\"Set1\")\n                }\n            }\n        }\n    }\n\n    async postInit() {\n\n        if (typeof this.featureSource.getHeader === \"function\") {\n            this.header = await this.featureSource.getHeader()\n            if (this.disposed) return   // This track was removed during async load\n        }\n\n        // Set properties from track line\n        if (this.header) {\n            this.setTrackProperties(this.header)\n        }\n\n        if (this.visibilityWindow === undefined && typeof this.featureSource.defaultVisibilityWindow === 'function') {\n            this.visibilityWindow = await this.featureSource.defaultVisibilityWindow()\n        }\n\n        return this\n\n    }\n\n    get supportsWholeGenome() {\n        if (this.config.supportsWholeGenome !== undefined) {\n            return this.config.supportsWholeGenome\n        } else if (this.featureSource && typeof this.featureSource.supportsWholeGenome === 'function') {\n            return this.featureSource.supportsWholeGenome()\n        } else {\n            if (this.visibilityWindow === undefined && (this.config.indexed === false || !this.config.indexURL)) {\n                return true\n            }\n        }\n    }\n\n    async getFeatures(chr, start, end, bpPerPixel) {\n        const visibilityWindow = this.visibilityWindow\n        return this.featureSource.getFeatures({chr, start, end, bpPerPixel, visibilityWindow})\n    };\n\n\n    /**\n     * The required height in pixels required for the track content.   This is not the visible track height, which\n     * can be smaller (with a scrollbar) or larger.\n     *\n     * @param features\n     * @returns {*}\n     */\n    computePixelHeight(features) {\n\n        if (this.displayMode === \"COLLAPSED\") {\n            return this.margin + this.expandedRowHeight\n        } else {\n            let maxRow = 0\n            if (features && (typeof features.forEach === \"function\")) {\n                for (let feature of features) {\n                    if (feature.row && feature.row > maxRow) {\n                        maxRow = feature.row\n                    }\n                }\n            }\n\n            const height = this.margin + (maxRow + 1) * (\"SQUISHED\" === this.displayMode ? this.squishedRowHeight : this.expandedRowHeight)\n            return height\n\n        }\n    };\n\n    draw(options) {\n\n        const featureList = options.features\n        const ctx = options.context\n        const bpPerPixel = options.bpPerPixel\n        const bpStart = options.bpStart\n        const pixelWidth = options.pixelWidth\n        const pixelHeight = options.pixelHeight\n        const bpEnd = bpStart + pixelWidth * bpPerPixel + 1\n\n\n        if (!this.config.isMergedTrack) {\n            IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n        }\n\n        if (featureList) {\n\n            const rowFeatureCount = []\n            options.rowLastX = []\n            options.rowLastLabelX = []\n            for (let feature of featureList) {\n                if (feature.start > bpStart && feature.end < bpEnd) {\n                    const row = this.displayMode === \"COLLAPSED\" ? 0 : feature.row || 0\n                    if (rowFeatureCount[row] === undefined) {\n                        rowFeatureCount[row] = 1\n                    } else {\n                        rowFeatureCount[row]++\n                    }\n                    options.rowLastX[row] = -Number.MAX_SAFE_INTEGER\n                    options.rowLastLabelX[row] = -Number.MAX_SAFE_INTEGER\n                }\n            }\n            const maxFeatureCount = Math.max(1, Math.max(...rowFeatureCount))\n            const pixelsPerFeature = pixelWidth / maxFeatureCount\n\n            let lastPxEnd = []\n            for (let feature of featureList) {\n                if (feature.end < bpStart) continue\n                if (feature.start > bpEnd) break\n                const row = this.displayMode === 'COLLAPSED' ? 0 : feature.row\n                options.drawLabel = options.labelAllFeatures || pixelsPerFeature > 10\n                const pxEnd = Math.ceil((feature.end - bpStart) / bpPerPixel)\n                const last = lastPxEnd[row]\n                if (!last || pxEnd > last) {\n                    this.render.call(this, feature, bpStart, bpPerPixel, pixelHeight, ctx, options)\n\n                    // Ensure a visible gap between features\n                    const pxStart = Math.floor((feature.start - bpStart) / bpPerPixel)\n                    if (last && pxStart - last <= 0) {\n                        ctx.globalAlpha = 0.5\n                        IGVGraphics.strokeLine(ctx, pxStart, 0, pxStart, pixelHeight, {'strokeStyle': \"rgb(255, 255, 255)\"})\n                        ctx.globalAlpha = 1.0\n                    }\n                    lastPxEnd[row] = pxEnd\n                }\n            }\n\n        } else {\n            console.log(\"No feature list\")\n        }\n\n    };\n\n    clickedFeatures(clickState) {\n\n        const y = clickState.y - this.margin\n        const allFeatures = super.clickedFeatures(clickState)\n\n        let row\n        switch (this.displayMode) {\n            case 'SQUISHED':\n                row = Math.floor(y / this.squishedRowHeight)\n                break\n            case 'EXPANDED':\n                row = Math.floor(y / this.expandedRowHeight)\n                break\n            default:\n                row = undefined\n        }\n\n        return allFeatures.filter(function (feature) {\n            return (row === undefined || feature.row === undefined || row === feature.row)\n        })\n    }\n\n    /**\n     * Return \"popup data\" for feature @ genomic location.  Data is an array of key-value pairs\n     */\n    popupData(clickState, features) {\n\n        if (features === undefined) features = this.clickedFeatures(clickState)\n        const genomicLocation = clickState.genomicLocation\n        const data = []\n        for (let feature of features) {\n\n            // Whole genome hack, whole-genome psuedo features store the \"real\" feature in an _f field\n            const f = feature._f || feature\n\n            const featureData = (typeof f.popupData === \"function\") ?\n                f.popupData(genomicLocation) :\n                this.extractPopupData(f)\n\n            if (featureData) {\n\n                if (data.length > 0) {\n                    data.push(\"<hr/><hr/>\")\n                }\n\n                // If we have an infoURL, find the name property and create the link.  We do this at this level\n                // to catch name properties in both custom popupData functions and the generic extractPopupData function\n\n                const infoURL = this.infoURL || this.config.infoURL\n                for (let fd of featureData) {\n                    data.push(fd)\n                    if (infoURL &&\n                        fd.name &&\n                        fd.name.toLowerCase() === \"name\" &&\n                        fd.value &&\n                        StringUtils.isString(fd.value) &&\n                        !fd.value.startsWith(\"<\")) {\n                        const href = infoURL.replace(\"$$\", feature.name)\n                        fd.value = `<a target=_blank href=${href}>${fd.value}</a>`\n                    }\n                }\n\n\n                //Array.prototype.push.apply(data, featureData);\n\n                // If we have clicked over an exon number it.\n                // Disabled for GFF and GTF files if the visibility window is < the feature length since we don't know if we have all exons\n                const isGFF = \"gff\" === this.config.format || \"gff3\" === this.config.format || \"gtf\" === this.config.format\n                if (f.exons) {\n                    for (let i = 0; i < f.exons.length; i++) {\n                        const exon = f.exons[i]\n                        if (genomicLocation >= exon.start && genomicLocation <= exon.end) {\n                            const exonNumber = isGFF ?\n                                exon.number :\n                                f.strand === \"-\" ? f.exons.length - i : i + 1\n                            if (exonNumber) {\n                                data.push('<hr/>')\n                                data.push({name: \"Exon Number\", value: exonNumber})\n                            }\n                            break\n                        }\n                    }\n                }\n            }\n        }\n\n        return data\n\n    }\n\n    menuItemList() {\n\n        const menuItems = []\n\n        if (this.render === renderSnp) {\n            menuItems.push('<hr/>')\n            for (let colorScheme of [\"function\", \"class\"]) {\n                menuItems.push({\n                    object: $(createCheckbox('Color by ' + colorScheme, colorScheme === this.colorBy)),\n                    click: () => {\n                        this.colorBy = colorScheme\n                        this.trackView.repaintViews()\n                    }\n                })\n            }\n        }\n\n        menuItems.push('<hr/>')\n        for (let displayMode of [\"COLLAPSED\", \"SQUISHED\", \"EXPANDED\"]) {\n            const lut =\n                {\n                    \"COLLAPSED\": \"Collapse\",\n                    \"SQUISHED\": \"Squish\",\n                    \"EXPANDED\": \"Expand\"\n                }\n\n            menuItems.push(\n                {\n                    object: $(createCheckbox(lut[displayMode], displayMode === this.displayMode)),\n                    click: () => {\n                        this.displayMode = displayMode\n                        this.config.displayMode = displayMode\n                        this.trackView.checkContentHeight()\n                        this.trackView.repaintViews()\n                    }\n                })\n        }\n\n        return menuItems\n\n    };\n\n\n    contextMenuItemList(clickState) {\n\n        const features = this.clickedFeatures(clickState)\n\n        if (undefined === features || 0 === features.length) {\n            return undefined\n        }\n\n        if (features.length > 1) {\n            features.sort((a, b) => (b.end - b.start) - (a.end - a.start))\n        }\n        const f = features[0]   // The shortest clicked feature\n\n        if ((f.end - f.start) <= 1000000) {\n            const list = [{\n                label: 'View feature sequence',\n                click: async () => {\n                    let seq = await this.browser.genome.getSequence(f.chr, f.start, f.end)\n                    if (!seq) {\n                        seq = \"Unknown sequence\"\n                    } else if (f.strand === '-') {\n                        seq = reverseComplementSequence(seq)\n                    }\n                    this.browser.alert.present(seq)\n\n                }\n            }]\n\n            if (isSecureContext() && navigator.clipboard !== undefined) {\n                list.push(\n                    {\n                        label: 'Copy feature sequence',\n                        click: async () => {\n                            let seq = await this.browser.genome.getSequence(f.chr, f.start, f.end)\n                            if (!seq) {\n                                seq = \"Unknown sequence\"\n                            } else if (f.strand === '-') {\n                                seq = reverseComplementSequence(seq)\n                            }\n                            try {\n                                await navigator.clipboard.writeText(seq)\n                            } catch (e) {\n                                console.error(e)\n                                this.browser.alert.present(`error copying sequence to clipboard ${e}`)\n                            }\n                        }\n                    }\n                )\n            }\n            list.push('<hr/>')\n            return list\n        } else {\n            return undefined\n        }\n    }\n\n    description() {\n\n        // if('snp' === this.type) {\n        if (renderSnp === this.render) {\n            let desc = \"<html>\" + this.name + '<hr/>'\n            desc += '<em>Color By Function:</em><br>'\n            desc += '<span style=\"color:red\">Red</span>: Coding-Non-Synonymous, Splice Site<br>'\n            desc += '<span style=\"color:green\">Green</span>: Coding-Synonymous<br>'\n            desc += '<span style=\"color:blue\">Blue</span>: Untranslated<br>'\n            desc += '<span style=\"color:black\">Black</span>: Intron, Locus, Unknown<br><br>'\n            desc += '<em>Color By Class:</em><br>'\n            desc += '<span style=\"color:red\">Red</span>: Deletion<br>'\n            desc += '<span style=\"color:green\">Green</span>: MNP<br>'\n            desc += '<span style=\"color:blue\">Blue</span>: Microsatellite, Named<br>'\n            desc += '<span style=\"color:black\">Black</span>: Indel, Insertion, SNP'\n            desc += \"</html>\"\n            return desc\n        } else {\n            return super.description()\n        }\n\n    };\n\n    /**\n     * Return color for feature.\n     * @param feature\n     * @returns {string}\n     */\n\n    getColorForFeature(feature) {\n\n        let color\n        if (this.altColor && \"-\" === feature.strand) {\n            color = (typeof this.altColor === \"function\") ? this.altColor(feature) : this.altColor\n        } else if (this.color) {\n            color = (typeof this.color === \"function\") ? this.color(feature) : this.color  // Explicit setting via menu, or possibly track line if !config.color\n        } else if (this.colorBy) {\n            const value = feature.getAttributeValue ?\n                feature.getAttributeValue(this.colorBy) :\n                feature[this.colorBy]\n            color = this.colorTable.getColor(value)\n        } else if (feature.color) {\n            color = feature.color   // Explicit color for feature\n        }\n\n        // If no explicit setting use the default\n        if (!color) {\n            color = DEFAULT_COLOR   // Track default\n        }\n\n        if (feature.alpha && feature.alpha !== 1) {\n            color = IGVColor.addAlpha(color, feature.alpha)\n        } else if (this.useScore && feature.score && !Number.isNaN(feature.score)) {\n            // UCSC useScore option, for scores between 0-1000.  See https://genome.ucsc.edu/goldenPath/help/customTrack.html#TRACK\n            const min = this.config.min ? this.config.min : this.viewLimitMin ? this.viewLimitMin : 0\n            const max = this.config.max ? this.config.max : this.viewLimitMax ? this.viewLimitMax : 1000\n            const alpha = getAlpha(min, max, feature.score)\n            feature.alpha = alpha    // Avoid computing again\n            color = IGVColor.addAlpha(color, alpha)\n        }\n\n\n        function getAlpha(min, max, score) {\n            const binWidth = (max - min) / 9\n            const binNumber = Math.floor((score - min) / binWidth)\n            return Math.min(1.0, 0.2 + (binNumber * 0.8) / 9)\n        }\n\n        return color\n    }\n\n\n    /**\n     * Called when the track is removed.  Do any needed cleanup here\n     */\n    dispose() {\n        this.trackView = undefined\n    }\n}\n\n/**\n * Monitors track drag events, updates label position to ensure that they're always visible.\n * @param track\n */\nfunction monitorTrackDrag(track) {\n\n    if (track.browser.on) {\n        track.browser.on('trackdragend', onDragEnd)\n        track.browser.on('trackremoved', unSubscribe)\n    }\n\n    function onDragEnd() {\n        if (track.trackView && track.displayMode !== \"SQUISHED\") {\n            track.trackView.updateViews()      // TODO -- refine this to the viewport that was dragged after DOM refactor\n        }\n    }\n\n    function unSubscribe(removedTrack) {\n        if (track.browser.un && track === removedTrack) {\n            track.browser.un('trackdragend', onDragEnd)\n            track.browser.un('trackremoved', unSubscribe)\n        }\n    }\n\n}\n\n\nexport default FeatureTrack\n","import { DOMUtils, makeDraggable, Icon } from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass RegionTableBase {\n    constructor(config) {\n\n        this.config = config\n\n        this.browser = config.browser\n\n        this.columnFormat = config.columnFormat\n\n        this.tableRowSelectionList = []\n\n        this.tableDOM = DOMUtils.div({ class: 'igv-roi-table' })\n        // if(config.width) {\n        //     let [ w ] = config.width.split('px')\n        //     w = parseInt(w, 10)\n        //     this.tableDOM.style.width = `${Math.min(w, 1600)}px`\n        //\n        // }\n\n        config.parent.appendChild(this.tableDOM)\n\n        this.headerDOM = config\n\n        this.tableColumnTitles = this.tableDOM\n\n        this.tableRowContainer = this.tableDOM\n\n        this.footerDOM = config.gotoButtonHandler\n\n    }\n\n    set headerDOM({ browser, parent, headerTitle, dismissHandler }) {\n\n        // header\n        const dom = DOMUtils.div()\n        this.tableDOM.appendChild(dom)\n\n        // header title\n        const div = DOMUtils.div()\n        dom.appendChild(div)\n        div.innerHTML = headerTitle\n\n        // table dismiss button\n        const dismiss = DOMUtils.div()\n        dom.appendChild(dismiss)\n        dismiss.appendChild(Icon.createIcon('times'))\n\n        this.boundDismissHandler = mouseClickHandler.bind(this)\n\n        dismiss.addEventListener('click', this.boundDismissHandler)\n\n        function mouseClickHandler (event) {\n            event.stopPropagation()\n            dismissHandler()\n        }\n\n        const { y:y_root } = browser.root.getBoundingClientRect()\n        const { y:y_parent } = parent.getBoundingClientRect()\n        const constraint = -(y_parent - y_root)\n        makeDraggable(this.tableDOM, dom, { minX:0, minY:constraint })\n\n        this.tableDOM.style.display = 'none'\n\n        this._headerDOM = dom\n\n    }\n\n    set tableColumnTitles(tableDOM) {\n\n        const tblColumnTitles = DOMUtils.div({ class: 'igv-roi-table-column-titles' })\n        tableDOM.appendChild(tblColumnTitles)\n\n        for (const { label, width } of this.columnFormat) {\n            const col = DOMUtils.div()\n            tblColumnTitles.appendChild(col)\n            col.style.width = width\n            col.innerText = label\n        }\n\n        this._tableColumnTitlesDOM = tblColumnTitles\n\n    }\n\n    get tableColumnTitles() {\n        return this._tableColumnTitlesDOM\n    }\n\n    set tableRowContainer(container) {\n\n        const tblRowContainer = DOMUtils.div({ class: 'igv-roi-table-row-container' })\n        container.appendChild(tblRowContainer)\n\n        this._tableRowContainerDOM = tblRowContainer\n\n    }\n\n    get tableRowContainer() {\n        return this._tableRowContainerDOM\n    }\n\n    set footerDOM(gotoButtonHandler) {\n\n        const dom = DOMUtils.div()\n        this.tableDOM.appendChild(dom)\n\n        // Go To Button\n        const gotoButton = DOMUtils.div({class: 'igv-roi-table-button'})\n        dom.appendChild(gotoButton)\n\n        gotoButton.id = 'igv-roi-table-view-button'\n        gotoButton.textContent = 'Go To'\n        gotoButton.style.pointerEvents = 'none'\n\n        this._footerDOM = dom\n\n        this.gotoButton = gotoButton\n\n        this.boundGotoButtonHandler = gotoButtonHandler.bind(this)\n\n        this.gotoButton.addEventListener('click', this.boundGotoButtonHandler)\n\n    }\n\n    tableRowDOMHelper(dom) {\n\n        dom.addEventListener('mousedown', event => {\n            event.stopPropagation()\n\n            dom.classList.toggle('igv-roi-table-row-selected')\n            dom.classList.contains('igv-roi-table-row-selected') ? dom.classList.remove('igv-roi-table-row-hover') : dom.classList.add('igv-roi-table-row-hover')\n\n            this.setTableRowSelectionState(dom.classList.contains('igv-roi-table-row-selected'))\n        })\n\n        dom.addEventListener('mouseover', e => {\n            dom.classList.contains('igv-roi-table-row-selected') ? dom.classList.remove('igv-roi-table-row-hover') : dom.classList.add('igv-roi-table-row-hover')\n        })\n\n        dom.addEventListener('mouseout', e => {\n            dom.classList.remove('igv-roi-table-row-hover')\n        })\n\n    }\n\n    clearTable() {\n        const elements = this.tableRowContainer.querySelectorAll('.igv-roi-table-row')\n        for (let el of elements) {\n            el.remove()\n        }\n    }\n\n    setTableRowSelectionState(isTableRowSelected) {\n        isTableRowSelected ? this.tableRowSelectionList.push(1) : this.tableRowSelectionList.pop()\n        this.gotoButton.style.pointerEvents = this.tableRowSelectionList.length > 0 ? 'auto' : 'none'\n    }\n\n    present() {\n        this.tableDOM.style.left = `${ 0 }px`\n\n        const { y:y_root } = this.browser.root.getBoundingClientRect()\n        const { y:y_parent } = this.config.parent.getBoundingClientRect()\n\n        this.tableDOM.style.top  = `${ y_root - y_parent }px`\n        this.tableDOM.style.display = 'flex'\n    }\n\n    dismiss() {\n        this.tableDOM.style.display = 'none'\n    }\n\n    dispose() {\n\n        this.tableDOM.innerHTML = ''\n        this.tableDOM.remove()\n\n        for (const key of Object.keys(this)) {\n            this[key] = undefined\n        }\n\n        document.removeEventListener('click', this.boundDismissHandler)\n\n    }\n\n}\n\nexport default RegionTableBase\n","import { DOMUtils } from '../../node_modules/igv-ui/dist/igv-ui.js'\nimport { StringUtils } from '../../node_modules/igv-utils/src/index.js'\n\nimport RegionTableBase from '../ui/regionTableBase.js'\n\nclass BlatTable extends RegionTableBase {\n\n    constructor(config) {\n\n        const cooked = Object.assign({ 'width':'1024px' }, config)\n        super(cooked)\n\n        this.descriptionDOM = config\n\n    }\n\n    set descriptionDOM(config) {\n\n        if (config.description) {\n\n            let dom\n\n            // BLAT result for query sequence\n            dom = DOMUtils.div({ class: 'igv-roi-table-description' })\n            this.tableDOM.insertBefore(dom, this.tableColumnTitles)\n            dom.style.height = 'auto'\n            dom.innerHTML = `BLAT result for query sequence:`\n\n            // CTAATCAtctacactggtttctactg ...\n            dom = DOMUtils.div({ class: 'igv-roi-table-description' })\n            this.tableDOM.insertBefore(dom, this.tableColumnTitles)\n            dom.style.height = 'auto'\n            dom.style.maxHeight = '128px'\n            dom.innerHTML = config.description\n\n            // Select one or more rows ...\n            dom = DOMUtils.div({ class: 'igv-roi-table-goto-explainer' })\n            this.tableDOM.insertBefore(dom, this.tableColumnTitles)\n            dom.innerHTML = `Select one or more rows and click Go To to view the regions`\n\n        }\n\n    }\n\n    tableRowDOM(record) {\n\n        const dom = DOMUtils.div({ class: 'igv-roi-table-row' })\n\n        const pretty = record.map(item => isFinite(item) ? StringUtils.numberFormatter(item) : item)\n\n        for (let i = 0; i < pretty.length; i++) {\n\n            const el = DOMUtils.div()\n            dom.appendChild(el)\n\n            const format = this.columnFormat[ i ]\n            el.style.width = format.width || 'fit-content'\n            el.innerText = pretty[ i ]\n        }\n\n        this.tableRowDOMHelper(dom)\n\n        return dom\n    }\n\n    renderTable(records) {\n\n        Array.from(this.tableRowContainer.querySelectorAll('.igv-roi-table-row')).forEach(el => el.remove())\n\n        if (records.length > 0) {\n\n            for (let record of records) {\n                const row = this.tableRowDOM(record)\n                this.tableRowContainer.appendChild(row)\n            }\n\n        }\n\n    }\n\n    static getColumnFormatConfiguration() {\n\n        /*\n        return [\n            { label:         'chr', width: '60px' },\n            { label:       'start', width: '100px' },\n            { label:         'end', width: '100px' },\n            { label:      'strand', width: '50px' },\n            { label:       'score', width: '50px' },\n            { label:       'match', width: '50px' },\n            { label:   \"mis-match\", width: '70px' },\n            { label:  \"rep. match\", width: '70px' },\n            { label:         \"N's\", width: '32px' },\n            { label: 'Q gap count', width: '90px' },\n            { label: 'Q gap bases', width: '90px' },\n            { label: 'T gap count', width: '90px' },\n            { label: 'T gap bases', width: '90px' },\n        ]\n        */\n\n        return [\n            { label:         'chr', width: '7%' },\n            { label:       'start', width: '12%' },\n            { label:         'end', width: '12%' },\n            { label:      'strand', width: '5%' },\n            { label:       'score', width: '5%' },\n            { label:       'match', width: '5%' },\n            { label:   \"mis-match\", width: '7%' },\n            { label:  \"rep. match\", width: '7%' },\n            { label:         \"N's\", width: '3%' },\n            { label: 'Q gap count', width: '9%' },\n            { label: 'Q gap bases', width: '9%' },\n            { label: 'T gap count', width: '9%' },\n            { label: 'T gap bases', width: '9%' },\n        ]\n    }\n\n    static gotoButtonHandler (event) {\n\n        event.stopPropagation()\n\n        const selectedRows = this.tableDOM.querySelectorAll('.igv-roi-table-row-selected')\n\n        const loci = []\n        for (const row of selectedRows) {\n\n            const record = []\n            row.querySelectorAll('div').forEach(el => record.push(el.innerText))\n\n            const [ chr, start, end ] = record\n            loci.push(`${ chr }:${ start }-${ end }`)\n        }\n\n        for (const el of this.tableDOM.querySelectorAll('.igv-roi-table-row')) {\n            el.classList.remove('igv-roi-table-row-selected')\n        }\n\n        this.setTableRowSelectionState(false)\n\n        this.browser.search(loci.join(' '))\n\n        // console.log(`browser search( ${loci.join(' ')} )`)\n\n    }\n\n}\n\nexport default BlatTable\n","/*\nhttp://genome.ucsc.edu/cgi-bin/hgBlat\n?userSeq=CTAATCAtctacactggtttctactgaaatgtctgttgtcatagacttaattgtgtcttcagatacagcagttctgttatttctgagttttacctggggcaagagaatctttagcaagtttaaaggcacctatatctggaatcacccctccctccagatgaatatcacagactctcccattaaaggtcttgccTTCCTTGATAGCATCATCACTCCA\n&type=DNA\n&db=hg38\n&output=json\n */\n\nimport {decodePSL} from \"../feature/decode/ucsc.js\"\n\n//const blatServer = \"https://genome.ucsc.edu/cgi-bin/hgBlat\"\nconst defaultBlatServer = \"https://igv.org/services/blatUCSC.php\"\n//const blatServer = \"http://localhost:8000/blatUCSC.php\"\n\n\nasync function blat({url, userSeq, db}) {\n\n    url = url || defaultBlatServer\n\n    const results = await postData(url, userSeq, db)\n\n    const fields = results.fields\n\n    const features = results.blat.map(decodePSL)\n\n    return features\n}\n\nasync function postData(url = \"\", userSeq, db) {\n\n    const data = new URLSearchParams();\n    data.append(\"userSeq\", userSeq);\n    data.append(\"db\", db);\n\n    const response = await fetch(url, { method: \"post\", body: data })\n    return response.json(); // parses JSON response into native JavaScript objects\n}\n\n\n\nexport {blat}\n","import FeatureTrack from \"../feature/featureTrack.js\"\nimport BlatTable from \"./blatTable.js\"\nimport {blat} from \"./blatClient.js\"\n\nconst maxSequenceSize = 25000\n\nclass BlatTrack extends FeatureTrack {\n\n    constructor(config, browser) {\n        super(config, browser)\n        if (!this.name) {\n            this.name = 'Blat Results'\n        }\n        this.sequence = config.sequence\n        this.table = undefined\n    }\n\n    openTableView() {\n\n        if (undefined === this.table) {\n\n            const rows = this.config.features.map(f => [\n                f.chr,\n                (f.start + 1),\n                f.end,\n                f.strand,\n                f.score,\n                f.matches,\n                f.misMatches,\n                f.repMatches,\n                f.nCount,\n                f.qNumInsert,\n                f.qBaseInsert,\n                f.tNumInsert,\n                f.tBaseInsert\n            ])\n\n            const config =\n                {\n                    browser: this.browser,\n                    parent: this.browser.parent,\n                    headerTitle: this.config.title,\n                    description: this.sequence,\n                    dismissHandler: () => {\n                        this.table.dismiss()\n                        this.table.dispose()\n                        this.table = undefined\n                    },\n                    columnFormat: BlatTable.getColumnFormatConfiguration(),\n                    gotoButtonHandler: BlatTable.gotoButtonHandler\n                }\n\n            this.table = new BlatTable(config)\n            this.table.renderTable(rows)\n        }\n\n        this.table.present()\n\n    }\n\n    menuItemList() {\n\n        const menuItems = super.menuItemList()\n\n        menuItems.push('<hr/>')\n        menuItems.push({\n            label: 'Open table view',\n            click: () => this.openTableView()\n        })\n        return menuItems\n    }\n\n\n    /**\n     * Track has been permanently removed.  Release resources and other cleanup\n     */\n    dispose() {\n        super.dispose()\n        // Release DOM element for table\n        if (this.table) {\n            this.table.popover.parentElement.removeChild(this.table.popover)\n\n        }\n\n\n    }\n}\n\n\nasync function createBlatTrack({sequence, browser, name, title}) {\n\n    if (sequence.length > maxSequenceSize) {\n        browser.alert.present(`Sequence size exceeds maximum allowed length (${sequence.length} > ${maxSequenceSize})`)\n        return\n    }\n\n    const db = browser.genome.id   // TODO -- blat specific property\n\n    const url = browser.config[\"blatServerURL\"]\n\n    try {\n\n        const features = await blat({url, userSeq: sequence, db})\n        const trackConfig = {\n            type: 'blat',\n            name: name || 'blat results',\n            title: title || 'blat results',\n            sequence: sequence,\n            altColor: 'rgb(176, 176, 236)',\n            color: 'rgb(236, 176, 176)',\n            features: features\n        }\n\n        const track = await browser.loadTrack(trackConfig)\n        track.openTableView()\n\n    } catch (e) {\n        browser.alert.present(`Error performing blat search:  ${e}`)\n    }\n\n}\n\nexport default BlatTrack\nexport {createBlatTrack, maxSequenceSize}\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport BamSource from \"./bamSource.js\"\nimport PairedAlignment from \"./pairedAlignment.js\"\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport paintAxis from \"../util/paintAxis.js\"\nimport {createCheckbox} from \"../igv-icons.js\"\nimport MenuUtils from \"../ui/menuUtils.js\"\nimport {PaletteColorTable} from \"../util/colorPalletes.js\"\nimport {IGVColor, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport {makePairedAlignmentChords, makeSupplementalAlignmentChords, sendChords} from \"../jbrowse/circularViewUtils.js\"\nimport {isSecureContext} from \"../util/igvUtils.js\"\nimport PairedEndStats from \"./pairedEndStats.js\"\nimport {createBlatTrack, maxSequenceSize} from \"../blat/blatTrack.js\"\nimport {reverseComplementSequence} from \"../util/sequenceUtils.js\"\n\nconst alignmentStartGap = 5\nconst downsampleRowHeight = 5\nconst DEFAULT_ALIGNMENT_COLOR = \"rgb(185, 185, 185)\"\nconst DEFAULT_COVERAGE_COLOR = \"rgb(150, 150, 150)\"\nconst DEFAULT_CONNECTOR_COLOR = \"rgb(200, 200, 200)\"\nconst MINIMUM_BLAT_LENGTH = 20\n\nclass BAMTrack extends TrackBase {\n\n    static defaults = {\n        alleleFreqThreshold: 0.2,\n        visibilityWindow: 30000,\n        showCoverage: true,\n        showAlignments: true,\n        viewAsPairs: false,\n        pairsSupported: true,\n        showSoftClips: false,\n        showAllBases: false,\n        showInsertions: true,\n        showMismatches: true,\n        height: 300,\n        coverageTrackHeight: 50\n    }\n\n    constructor(config, browser) {\n        super(config, browser)\n    }\n\n    init(config) {\n\n        this.type = \"alignment\"\n        this.featureSource = new BamSource(config, this.browser)\n        this.coverageTrack = new CoverageTrack(config, this)\n        this.alignmentTrack = new AlignmentTrack(config, this)\n\n        super.init(config)\n\n        this.alignmentTrack.setTop(this.coverageTrack, this.showCoverage)\n\n        if(!this.showAlignments) {\n            this._height = this.coverageTrackHeight\n        }\n\n        // The sort object can be an array in the case of multi-locus view, however if multiple sort positions\n        // are present for a given reference frame the last one will take precedence\n        if (config.sort) {\n            if (Array.isArray(config.sort)) {\n                // Legacy support\n                this.assignSort(config.sort[0])\n            } else {\n                this.assignSort(config.sort)\n            }\n        }\n\n    }\n\n    set height(h) {\n        this._height = h\n        if (this.showAlignments) {\n            this.alignmentTrack.height = this.showCoverage ? h - this.coverageTrackHeight : h\n        }\n    }\n\n    get height() {\n        return this._height\n    }\n\n    get minTemplateLength() {\n        const configMinTLEN = this.config.minTLEN !== undefined ? this.config.minTLEN : this.config.minFragmentLength\n        return (configMinTLEN !== undefined) ? configMinTLEN :\n            this._pairedEndStats ? this._pairedEndStats.minTLEN : 0\n    }\n\n    get maxTemplateLength() {\n        const configMaxTLEN = this.config.maxTLEN !== undefined ? this.config.maxTLEN : this.config.maxFragmentLength\n        return (configMaxTLEN !== undefined) ? configMaxTLEN :\n            this._pairedEndStats ? this._pairedEndStats.maxTLEN : 1000\n    }\n\n    sort(options) {\n        options = this.assignSort(options)\n\n        for (let vp of this.trackView.viewports) {\n            if (vp.containsPosition(options.chr, options.position)) {\n                const alignmentContainer = vp.cachedFeatures\n                if (alignmentContainer) {\n                    alignmentContainer.sortRows(options)\n                    vp.repaint()\n                }\n            }\n        }\n    }\n\n    /**\n     * Fix syntax problems for sort options.\n     * @param options\n     */\n    assignSort(options) {\n        // convert old syntax\n        if (options.locus) {\n            const range = StringUtils.parseLocusString(options.locus)\n            options.chr = range.chr\n            options.position = range.start\n        } else {\n            options.position--\n        }\n        options.direction = options.direction === \"ASC\" || options.direction === true\n\n        // chr aliasing\n        options.chr = this.browser.genome.getChromosomeName(options.chr)\n        this.sortObject = options\n\n        return this.sortObject\n    }\n\n    async getFeatures(chr, bpStart, bpEnd, bpPerPixel, viewport) {\n\n        const alignmentContainer = await this.featureSource.getAlignments(chr, bpStart, bpEnd)\n\n        if (alignmentContainer.paired && !this._pairedEndStats && !this.config.maxFragmentLength) {\n            const pairedEndStats = new PairedEndStats(alignmentContainer.alignments, this.config)\n            if (pairedEndStats.totalCount > 99) {\n                this._pairedEndStats = pairedEndStats\n            }\n        }\n        alignmentContainer.alignments = undefined  // Don't need to hold onto these anymore\n\n        const sort = this.sortObject\n        if (sort) {\n            if (sort.chr === chr && sort.position >= bpStart && sort.position <= bpEnd) {\n                alignmentContainer.sortRows(sort)\n            }\n        }\n\n        return alignmentContainer\n    }\n\n\n    /**\n     * Compute the pixel height required to display all content.  This is not the same as the viewport height\n     * (track.height) which might include a scrollbar.\n     *\n     * @param alignmentContainer\n     * @returns {number}\n     */\n    computePixelHeight(alignmentContainer) {\n        return (this.showCoverage ? this.coverageTrackHeight : 0) +\n            (this.showAlignments ? this.alignmentTrack.computePixelHeight(alignmentContainer) : 0)\n    }\n\n    draw(options) {\n\n        IGVGraphics.fillRect(options.context, 0, options.pixelTop, options.pixelWidth, options.pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n\n        if (true === this.showCoverage && this.coverageTrackHeight > 0) {\n            this.trackView.axisCanvas.style.display = 'block'\n            this.coverageTrack.draw(options)\n        } else {\n            this.trackView.axisCanvas.style.display = 'none'\n        }\n\n        if (true === this.showAlignments) {\n            this.alignmentTrack.setTop(this.coverageTrack, this.showCoverage)\n            this.alignmentTrack.draw(options)\n        }\n    }\n\n    paintAxis(ctx, pixelWidth, pixelHeight) {\n\n        this.coverageTrack.paintAxis(ctx, pixelWidth, this.coverageTrackHeight)\n\n        // if (this.browser.isMultiLocusMode()) {\n        //     ctx.clearRect(0, 0, pixelWidth, pixelHeight);\n        // } else {\n        //     this.coverageTrack.paintAxis(ctx, pixelWidth, this.coverageTrackHeight);\n        // }\n    }\n\n    contextMenuItemList(config) {\n        return this.alignmentTrack.contextMenuItemList(config)\n    }\n\n    popupData(clickState) {\n        if (true === this.showCoverage && clickState.y >= this.coverageTrack.top && clickState.y < this.coverageTrackHeight) {\n            return this.coverageTrack.popupData(clickState)\n        } else {\n            return this.alignmentTrack.popupData(clickState)\n        }\n    }\n\n    /**\n     * Return the features (alignment, coverage, downsampled interval) clicked on.  Needed for \"onclick\" event.\n     * @param clickState\n     * @param features\n     */\n    clickedFeatures(clickState) {\n\n        let clickedObject\n        if (true === this.showCoverage && clickState.y >= this.coverageTrack.top && clickState.y < this.coverageTrackHeight) {\n            clickedObject = this.coverageTrack.getClickedObject(clickState)\n        } else {\n            clickedObject = this.alignmentTrack.getClickedObject(clickState)\n        }\n        return clickedObject ? [clickedObject] : undefined\n    }\n\n    hoverText(clickState) {\n        if (true === this.showCoverage && clickState.y >= this.coverageTrack.top && clickState.y < this.coverageTrackHeight) {\n            const clickedObject = this.coverageTrack.getClickedObject(clickState)\n            if (clickedObject) {\n                return clickedObject.hoverText()\n            }\n        }\n\n    }\n\n    menuItemList() {\n\n\n        // Start with overage track items\n        let menuItems = []\n\n        menuItems = menuItems.concat(MenuUtils.numericDataMenuItems(this.trackView))\n\n        // Color by items\n        menuItems.push('<hr/>')\n        const $e = $('<div class=\"igv-track-menu-category\">')\n        $e.text('Color by:')\n        menuItems.push({name: undefined, object: $e, click: undefined, init: undefined})\n\n        const colorByMenuItems = [{key: 'strand', label: 'read strand'}]\n        if (this.alignmentTrack.hasPairs) {\n            colorByMenuItems.push({key: 'firstOfPairStrand', label: 'first-of-pair strand'})\n            colorByMenuItems.push({key: 'pairOrientation', label: 'pair orientation'})\n            colorByMenuItems.push({key: 'tlen', label: 'insert size (TLEN)'})\n            colorByMenuItems.push({key: 'unexpectedPair', label: 'pair orientation & insert size (TLEN)'})\n        }\n        const tagLabel = 'tag' + (this.alignmentTrack.colorByTag ? ' (' + this.alignmentTrack.colorByTag + ')' : '')\n        colorByMenuItems.push({key: 'tag', label: tagLabel})\n        for (let item of colorByMenuItems) {\n            const selected = (this.alignmentTrack.colorBy === item.key)\n            menuItems.push(this.colorByCB(item, selected))\n        }\n\n        // Show coverage / alignment options\n        const adjustTrackHeight = () => {\n            if (!this.autoHeight) {\n                const h =\n                    (this.showCoverage ? this.coverageTrackHeight : 0) +\n                    (this.showAlignments ? this.alignmentTrack.height : 0)\n                this.trackView.setTrackHeight(h)\n            }\n        }\n\n        menuItems.push('<hr/>')\n        menuItems.push({\n            object: $(createCheckbox(\"Show Coverage\", this.showCoverage)),\n            click: () => {\n                this.showCoverage = !this.showCoverage\n                adjustTrackHeight()\n                this.trackView.checkContentHeight()\n                this.trackView.repaintViews()\n            }\n        })\n        menuItems.push({\n            object: $(createCheckbox(\"Show Alignments\", this.showAlignments)),\n            click: () => {\n                this.showAlignments = !this.showAlignments\n                adjustTrackHeight()\n                this.trackView.checkContentHeight()\n                this.trackView.repaintViews()\n            }\n        })\n\n        // Show all bases\n        menuItems.push('<hr/>')\n        menuItems.push({\n            object: $(createCheckbox(\"Show all bases\", this.showAllBases)),\n            click: () => {\n                this.showAllBases = !this.showAllBases\n                this.config.showAllBases = this.showAllBases\n                this.trackView.repaintViews()\n            }\n        })\n\n        // Show mismatches\n        menuItems.push('<hr/>')\n        menuItems.push({\n            object: $(createCheckbox(\"Show mismatches\", this.showMismatches)),\n            click: () => {\n                this.showMismatches = !this.showMismatches\n                this.config.showMismatches = this.showMismatches\n                this.trackView.repaintViews()\n            }\n        })\n\n        // Insertions\n        menuItems.push({\n            object: $(createCheckbox(\"Show insertions\", this.showInsertions)),\n            click: () => {\n                this.showInsertions = !this.showInsertions\n                this.config.showInsertions = this.showInsertions\n                const alignmentContainers = this.getCachedAlignmentContainers()\n                this.trackView.repaintViews()\n            }\n        })\n\n        // Soft clips\n        menuItems.push({\n            object: $(createCheckbox(\"Show soft clips\", this.showSoftClips)),\n            click: () => {\n                this.showSoftClips = !this.showSoftClips\n                this.config.showSoftClips = this.showSoftClips\n                this.featureSource.setShowSoftClips(this.showSoftClips)\n                const alignmentContainers = this.getCachedAlignmentContainers()\n                for (let ac of alignmentContainers) {\n                    ac.setShowSoftClips(this.showSoftClips)\n                }\n                this.trackView.repaintViews()\n            }\n        })\n\n        // View as pairs\n        if (this.pairsSupported && this.alignmentTrack.hasPairs) {\n            menuItems.push('<hr/>')\n            menuItems.push({\n                object: $(createCheckbox(\"View as pairs\", this.viewAsPairs)),\n                click: () => {\n                    this.viewAsPairs = !this.viewAsPairs\n                    this.config.viewAsPairs = this.viewAsPairs\n                    this.featureSource.setViewAsPairs(this.viewAsPairs)\n                    const alignmentContainers = this.getCachedAlignmentContainers()\n                    for (let ac of alignmentContainers) {\n                        ac.setViewAsPairs(this.viewAsPairs)\n                    }\n                    this.trackView.repaintViews()\n                }\n            })\n        }\n\n        // Add chords to JBrowse circular view, if present\n        if (this.browser.circularView &&\n            (this.alignmentTrack.hasPairs || this.alignmentTrack.hasSupplemental)) {\n            menuItems.push('<hr/>')\n            if (this.alignmentTrack.hasPairs) {\n                menuItems.push({\n                    label: 'Add discordant pairs to circular view',\n                    click: () => {\n                        for (let viewport of this.trackView.viewports) {\n                            this.addPairedChordsForViewport(viewport)\n                        }\n                    }\n                })\n            }\n            if (this.alignmentTrack.hasSupplemental) {\n                menuItems.push({\n                    label: 'Add split reads to circular view',\n                    click: () => {\n                        for (let viewport of this.trackView.viewports) {\n                            this.addSplitChordsForViewport(viewport)\n                        }\n                    }\n                })\n            }\n        }\n\n\n        // Display mode\n        menuItems.push('<hr/>')\n        const $dml = $('<div class=\"igv-track-menu-category\">')\n        $dml.text('Display mode:')\n        menuItems.push({name: undefined, object: $dml, click: undefined, init: undefined})\n\n        menuItems.push({\n            object: $(createCheckbox(\"expand\", this.alignmentTrack.displayMode === \"EXPANDED\")),\n            click: () => {\n                this.alignmentTrack.displayMode = \"EXPANDED\"\n                this.config.displayMode = \"EXPANDED\"\n                this.trackView.checkContentHeight()\n                this.trackView.repaintViews()\n            }\n        })\n\n        menuItems.push({\n            object: $(createCheckbox(\"squish\", this.alignmentTrack.displayMode === \"SQUISHED\")),\n            click: () => {\n                this.alignmentTrack.displayMode = \"SQUISHED\"\n                this.config.displayMode = \"SQUISHED\"\n                this.trackView.checkContentHeight()\n                this.trackView.repaintViews()\n            }\n        })\n\n        return menuItems\n    }\n\n\n    /**\n     * Create a \"color by\" checkbox menu item, optionally initially checked\n     * @param menuItem\n     * @param showCheck\n     * @returns {{init: undefined, name: undefined, click: clickHandler, object: (jQuery|HTMLElement|jQuery.fn.init)}}\n     */\n    colorByCB(menuItem, showCheck) {\n        const $e = $(createCheckbox(menuItem.label, showCheck))\n        const clickHandler = (ev) => {\n\n            if (menuItem.key !== 'tag') {\n                if (menuItem.key === this.alignmentTrack.colorBy) {\n                    this.alignmentTrack.colorBy = 'none'\n                    this.config.colorBy = 'none'\n                    this.trackView.repaintViews()\n                } else {\n                    this.alignmentTrack.colorBy = menuItem.key\n                    this.config.colorBy = menuItem.key\n                    this.trackView.repaintViews()\n                }\n            } else {\n                this.browser.inputDialog.present({\n                    label: 'Tag Name',\n                    value: this.alignmentTrack.colorByTag ? this.alignmentTrack.colorByTag : '',\n                    callback: (tag) => {\n                        if (tag) {\n                            this.alignmentTrack.colorBy = 'tag'\n                            this.alignmentTrack.colorByTag = tag\n                            if (!this.alignmentTrack.tagColors) {\n                                this.alignmentTrack.tagColors = new PaletteColorTable(\"Set1\")\n                            }\n                        } else {\n                            this.alignmentTrack.colorBy = 'none'\n                            this.alignmentTrack.colorByTag = ''\n                        }\n                        this.trackView.repaintViews()\n                    }\n                }, ev)\n\n            }\n\n        }\n\n        return {name: undefined, object: $e, click: clickHandler, init: undefined}\n    }\n\n    /**\n     * Return the current state of the track.  Used to create sessions and bookmarks.\n     *\n     * @returns {*|{}}\n     */\n    getState() {\n\n        const config = super.getState()\n\n        if (this.sortObject) {\n            config.sort = {\n                chr: this.sortObject.chr,\n                position: this.sortObject.position + 1,\n                option: this.sortObject.option,\n                direction: this.sortObject.direction ? \"ASC\" : \"DESC\"\n            }\n        }\n\n        return config\n    }\n\n    getCachedAlignmentContainers() {\n        return this.trackView.viewports.map(vp => vp.cachedFeatures)\n    }\n\n    get dataRange() {\n        return this.coverageTrack.dataRange\n    }\n\n    set dataRange(dataRange) {\n        this.coverageTrack.dataRange = dataRange\n    }\n\n    get logScale() {\n        return this.coverageTrack.logScale\n    }\n\n    set logScale(logScale) {\n        this.coverageTrack.logScale = logScale\n    }\n\n    get autoscale() {\n        return this.coverageTrack.autoscale\n    }\n\n    set autoscale(autoscale) {\n        this.coverageTrack.autoscale = autoscale\n    }\n\n    /**\n     * Add chords to the circular view for the given viewport, represented by its reference frame\n     * @param refFrame\n     */\n    addPairedChordsForViewport(viewport) {\n\n        const maxTemplateLength = this.maxTemplateLength\n        const inView = []\n        const refFrame = viewport.referenceFrame\n        for (let a of viewport.cachedFeatures.allAlignments()) {\n            if (a.end >= refFrame.start\n                && a.start <= refFrame.end) {\n                if (a.paired) {\n                    if (a.end - a.start > maxTemplateLength) {\n                        inView.push(a)\n                    }\n                } else {\n                    if (a.mate\n                        && a.mate.chr\n                        && (a.mate.chr !== a.chr || Math.max(a.fragmentLength) > maxTemplateLength)) {\n                        inView.push(a)\n                    }\n                }\n            }\n        }\n        const chords = makePairedAlignmentChords(inView)\n        sendChords(chords, this, refFrame, 0.02)\n    }\n\n    addSplitChordsForViewport(viewport) {\n\n        const inView = []\n        const refFrame = viewport.referenceFrame\n        for (let a of viewport.cachedFeatures.allAlignments()) {\n\n            const sa = a.hasTag('SA')\n            if (a.end >= refFrame.start && a.start <= refFrame.end && sa) {\n                inView.push(a)\n            }\n        }\n\n        const chords = makeSupplementalAlignmentChords(inView)\n        sendChords(chords, this, refFrame, 0.02)\n    }\n}\n\n\nclass CoverageTrack {\n\n    constructor(config, parent) {\n        this.parent = parent\n        this.featureSource = parent.featureSource\n\n        this.paintAxis = paintAxis\n        this.top = 0\n\n        this.autoscale = config.autoscale || config.max === undefined\n        if (!this.autoscale) {\n            this.dataRange = {\n                min: config.min || 0,\n                max: config.max\n            }\n        }\n\n    }\n\n    get height() {\n        return this.parent.coverageTrackHeight\n    }\n\n    draw(options) {\n\n        const pixelTop = options.pixelTop\n        const pixelBottom = pixelTop + options.pixelHeight\n        const nucleotideColors = this.parent.browser.nucleotideColors\n\n        if (pixelTop > this.height) {\n            return //scrolled out of view\n        }\n\n        const ctx = options.context\n        const alignmentContainer = options.features\n        const coverageMap = alignmentContainer.coverageMap\n\n        let sequence\n        if (coverageMap.refSeq) {\n            sequence = coverageMap.refSeq.toUpperCase()\n        }\n\n        const bpPerPixel = options.bpPerPixel\n        const bpStart = options.bpStart\n        const pixelWidth = options.pixelWidth\n        const bpEnd = bpStart + pixelWidth * bpPerPixel + 1\n\n        // paint for all coverage buckets\n        // If alignment track color is != default, use it\n        let color\n        if (this.parent.coverageColor) {\n            color = this.parent.coverageColor\n        } else if (this.parent.color  && typeof this.parent.color !== \"function\") {\n            color = IGVColor.darkenLighten(this.parent.color, -35)\n        } else {\n            color = DEFAULT_COVERAGE_COLOR\n        }\n        IGVGraphics.setProperties(ctx, {\n            fillStyle: color,\n            strokeStyle: color\n        })\n\n        const w = Math.max(1, Math.ceil(1.0 / bpPerPixel))\n        for (let i = 0, len = coverageMap.coverage.length; i < len; i++) {\n\n            const bp = (coverageMap.bpStart + i)\n            if (bp < bpStart) continue\n            if (bp > bpEnd) break\n\n            const item = coverageMap.coverage[i]\n            if (!item) continue\n\n            const h = Math.round((item.total / this.dataRange.max) * this.height)\n            const y = this.height - h\n            const x = Math.floor((bp - bpStart) / bpPerPixel)\n\n\n            // IGVGraphics.setProperties(ctx, {fillStyle: \"rgba(0, 200, 0, 0.25)\", strokeStyle: \"rgba(0, 200, 0, 0.25)\" });\n            IGVGraphics.fillRect(ctx, x, y, w, h)\n        }\n\n        // coverage mismatch coloring -- don't try to do this in above loop, color bar will be overwritten when w<1\n        if (sequence) {\n            for (let i = 0, len = coverageMap.coverage.length; i < len; i++) {\n\n                const bp = (coverageMap.bpStart + i)\n                if (bp < bpStart) continue\n                if (bp > bpEnd) break\n\n                const item = coverageMap.coverage[i]\n                if (!item) continue\n\n                const h = (item.total / this.dataRange.max) * this.height\n                let y = this.height - h\n                const x = Math.floor((bp - bpStart) / bpPerPixel)\n\n                const refBase = sequence[i]\n                if (item.isMismatch(refBase)) {\n                    IGVGraphics.setProperties(ctx, {fillStyle: nucleotideColors[refBase]})\n                    IGVGraphics.fillRect(ctx, x, y, w, h)\n\n                    let accumulatedHeight = 0.0\n                    for (let nucleotide of [\"A\", \"C\", \"T\", \"G\"]) {\n\n                        const count = item[\"pos\" + nucleotide] + item[\"neg\" + nucleotide]\n\n                        // non-logoritmic\n                        const hh = (count / this.dataRange.max) * this.height\n                        y = (this.height - hh) - accumulatedHeight\n                        accumulatedHeight += hh\n                        IGVGraphics.setProperties(ctx, {fillStyle: nucleotideColors[nucleotide]})\n                        IGVGraphics.fillRect(ctx, x, y, w, hh)\n                    }\n                }\n            }\n        }\n    }\n\n    getClickedObject(clickState) {\n\n        let features = clickState.viewport.cachedFeatures\n        if (!features || features.length === 0) return\n\n        const genomicLocation = Math.floor(clickState.genomicLocation)\n        const coverageMap = features.coverageMap\n        const coverageMapIndex = Math.floor(genomicLocation - coverageMap.bpStart)\n        return coverageMap.coverage[coverageMapIndex]\n    }\n\n    popupData(clickState) {\n\n        const nameValues = []\n\n        const coverage = this.getClickedObject(clickState)\n        if (coverage) {\n            const genomicLocation = Math.floor(clickState.genomicLocation)\n            const referenceFrame = clickState.viewport.referenceFrame\n\n            nameValues.push(referenceFrame.chr + \":\" + StringUtils.numberFormatter(1 + genomicLocation))\n\n            nameValues.push({name: 'Total Count', value: coverage.total})\n\n            // A\n            let tmp = coverage.posA + coverage.negA\n            if (tmp > 0) tmp = tmp.toString() + \" (\" + Math.round((tmp / coverage.total) * 100.0) + \"%, \" + coverage.posA + \"+, \" + coverage.negA + \"- )\"\n            nameValues.push({name: 'A', value: tmp})\n\n            // C\n            tmp = coverage.posC + coverage.negC\n            if (tmp > 0) tmp = tmp.toString() + \" (\" + Math.round((tmp / coverage.total) * 100.0) + \"%, \" + coverage.posC + \"+, \" + coverage.negC + \"- )\"\n            nameValues.push({name: 'C', value: tmp})\n\n            // G\n            tmp = coverage.posG + coverage.negG\n            if (tmp > 0) tmp = tmp.toString() + \" (\" + Math.round((tmp / coverage.total) * 100.0) + \"%, \" + coverage.posG + \"+, \" + coverage.negG + \"- )\"\n            nameValues.push({name: 'G', value: tmp})\n\n            // T\n            tmp = coverage.posT + coverage.negT\n            if (tmp > 0) tmp = tmp.toString() + \" (\" + Math.round((tmp / coverage.total) * 100.0) + \"%, \" + coverage.posT + \"+, \" + coverage.negT + \"- )\"\n            nameValues.push({name: 'T', value: tmp})\n\n            // N\n            tmp = coverage.posN + coverage.negN\n            if (tmp > 0) tmp = tmp.toString() + \" (\" + Math.round((tmp / coverage.total) * 100.0) + \"%, \" + coverage.posN + \"+, \" + coverage.negN + \"- )\"\n            nameValues.push({name: 'N', value: tmp})\n\n            nameValues.push('<HR/>')\n            nameValues.push({name: 'DEL', value: coverage.del.toString()})\n            nameValues.push({name: 'INS', value: coverage.ins.toString()})\n        }\n\n        return nameValues\n\n    }\n\n}\n\nclass AlignmentTrack {\n\n    constructor(config, parent) {\n\n        this.parent = parent\n        this.browser = parent.browser\n        this.featureSource = parent.featureSource\n        this.top = 0 === config.coverageTrackHeight ? 0 : config.coverageTrackHeight + 5\n        this.displayMode = config.displayMode || \"EXPANDED\"\n        this.alignmentRowHeight = config.alignmentRowHeight || 14\n        this.squishedRowHeight = config.squishedRowHeight || 3\n\n        this.negStrandColor = config.negStrandColor || \"rgba(150, 150, 230, 0.75)\"\n        this.posStrandColor = config.posStrandColor || \"rgba(230, 150, 150, 0.75)\"\n        this.insertionColor = config.insertionColor || \"rgb(138, 94, 161)\"\n        this.insertionTextColor = config.insertionTextColor || \"white\"\n        this.showInsertionText = config.showInsertionText === undefined ? false : !!config.showInsertionText\n        this.deletionColor = config.deletionColor || \"black\"\n        this.deletionTextColor = config.deletionTextColor || \"black\"\n        this.showDeletionText = config.showDeletionText === undefined ? false : !!config.showDeletionText\n        this.skippedColor = config.skippedColor || \"rgb(150, 170, 170)\"\n        this.pairConnectorColor = config.pairConnectorColor\n\n        this.smallTLENColor = config.smallTLENColor || config.smallFragmentLengthColor || \"rgb(0, 0, 150)\"\n        this.largeTLENColor = config.largeTLENColor || config.largeFragmentLengthColor || \"rgb(200, 0, 0)\"\n\n        this.pairOrientation = config.pairOrienation || 'fr'\n        this.pairColors = {}\n        this.pairColors[\"RL\"] = config.rlColor || \"rgb(0, 150, 0)\"\n        this.pairColors[\"RR\"] = config.rrColor || \"rgb(20, 50, 200)\"\n        this.pairColors[\"LL\"] = config.llColor || \"rgb(0, 150, 150)\"\n\n        this.colorBy = config.colorBy || \"unexpectedPair\"\n        this.colorByTag = config.colorByTag ? config.colorByTag.toUpperCase() : undefined\n        this.bamColorTag = config.bamColorTag === undefined ? \"YC\" : config.bamColorTag\n\n        this.hideSmallIndels = config.hideSmallIndels\n        this.indelSizeThreshold = config.indelSizeThreshold || 1\n\n        this.hasPairs = false   // Until proven otherwise\n        this.hasSupplemental = false\n    }\n\n    setTop(coverageTrack, showCoverage) {\n        this.top = (0 === coverageTrack.height || false === showCoverage) ? 0 : (5 + coverageTrack.height)\n    }\n\n    /**\n     * Compute the pixel height required to display all content.\n     *\n     * @param alignmentContainer\n     * @returns {number|*}\n     */\n    computePixelHeight(alignmentContainer) {\n\n        if (alignmentContainer.packedAlignmentRows) {\n            const h = alignmentContainer.hasDownsampledIntervals() ? downsampleRowHeight + alignmentStartGap : 0\n            const alignmentRowHeight = this.displayMode === \"SQUISHED\" ?\n                this.squishedRowHeight :\n                this.alignmentRowHeight\n            return h + (alignmentRowHeight * alignmentContainer.packedAlignmentRows.length) + 5\n        } else {\n            return 0\n        }\n    }\n\n    draw(options) {\n\n        const alignmentContainer = options.features\n        const ctx = options.context\n        const bpPerPixel = options.bpPerPixel\n        const bpStart = options.bpStart\n        const pixelWidth = options.pixelWidth\n        const bpEnd = bpStart + pixelWidth * bpPerPixel + 1\n        const showSoftClips = this.parent.showSoftClips\n        const showAllBases = this.parent.showAllBases\n        const nucleotideColors = this.browser.nucleotideColors\n\n        //alignmentContainer.repack(bpPerPixel, showSoftClips);\n        const packedAlignmentRows = alignmentContainer.packedAlignmentRows\n\n\n        ctx.save()\n\n        let referenceSequence = alignmentContainer.sequence\n        if (referenceSequence) {\n            referenceSequence = referenceSequence.toUpperCase()\n        }\n        let alignmentRowYInset = 0\n\n        let pixelTop = options.pixelTop\n        if (this.top) {\n            ctx.translate(0, this.top)\n        }\n        const pixelBottom = pixelTop + options.pixelHeight\n\n        if (alignmentContainer.hasDownsampledIntervals()) {\n            alignmentRowYInset = downsampleRowHeight + alignmentStartGap\n\n            alignmentContainer.downsampledIntervals.forEach(function (interval) {\n                var xBlockStart = (interval.start - bpStart) / bpPerPixel,\n                    xBlockEnd = (interval.end - bpStart) / bpPerPixel\n\n                if (xBlockEnd - xBlockStart > 5) {\n                    xBlockStart += 1\n                    xBlockEnd -= 1\n                }\n                IGVGraphics.fillRect(ctx, xBlockStart, 2, (xBlockEnd - xBlockStart), downsampleRowHeight - 2, {fillStyle: \"black\"})\n            })\n\n        } else {\n            alignmentRowYInset = 0\n        }\n\n        // Transient variable -- rewritten on every draw, used for click object selection\n        this.alignmentsYOffset = alignmentRowYInset\n        const alignmentRowHeight = this.displayMode === \"SQUISHED\" ?\n            this.squishedRowHeight :\n            this.alignmentRowHeight\n\n        if (packedAlignmentRows) {\n\n            const nRows = packedAlignmentRows.length\n\n            for (let rowIndex = 0; rowIndex < nRows; rowIndex++) {\n\n                const alignmentRow = packedAlignmentRows[rowIndex]\n                const alignmentY = alignmentRowYInset + (alignmentRowHeight * rowIndex)\n                const alignmentHeight = alignmentRowHeight <= 4 ? alignmentRowHeight : alignmentRowHeight - 2\n\n                if (alignmentY > pixelBottom) {\n                    break\n                } else if (alignmentY + alignmentHeight < pixelTop) {\n                    continue\n                }\n\n                for (let alignment of alignmentRow.alignments) {\n\n                    this.hasPairs = this.hasPairs || alignment.isPaired()\n                    if (this.browser.circularView) {\n                        // This is an expensive check, only do it if needed\n                        this.hasSupplemental = this.hasSupplemental || alignment.hasTag('SA')\n                    }\n\n                    if ((alignment.start + alignment.lengthOnRef) < bpStart) continue\n                    if (alignment.start > bpEnd) break\n                    if (true === alignment.hidden) {\n                        continue\n                    }\n\n                    if (alignment instanceof PairedAlignment) {\n\n                        drawPairConnector.call(this, alignment, alignmentY, alignmentHeight)\n\n                        drawSingleAlignment.call(this, alignment.firstAlignment, alignmentY, alignmentHeight)\n\n                        if (alignment.secondAlignment) {\n                            drawSingleAlignment.call(this, alignment.secondAlignment, alignmentY, alignmentHeight)\n                        }\n\n                    } else {\n                        drawSingleAlignment.call(this, alignment, alignmentY, alignmentHeight)\n                    }\n\n                }\n            }\n        }\n        ctx.restore()\n\n        // alignment is a PairedAlignment\n        function drawPairConnector(alignment, yRect, alignmentHeight) {\n\n            var connectorColor = this.getConnectorColor(alignment.firstAlignment),\n                xBlockStart = (alignment.connectingStart - bpStart) / bpPerPixel,\n                xBlockEnd = (alignment.connectingEnd - bpStart) / bpPerPixel,\n                yStrokedLine = yRect + alignmentHeight / 2\n\n            if ((alignment.connectingEnd) < bpStart || alignment.connectingStart > bpEnd) {\n                return\n            }\n            if (alignment.mq <= 0) {\n                connectorColor = IGVColor.addAlpha(connectorColor, 0.15)\n            }\n            IGVGraphics.setProperties(ctx, {fillStyle: connectorColor, strokeStyle: connectorColor})\n            IGVGraphics.strokeLine(ctx, xBlockStart, yStrokedLine, xBlockEnd, yStrokedLine)\n\n        }\n\n        function drawSingleAlignment(alignment, yRect, alignmentHeight) {\n\n\n            if ((alignment.start + alignment.lengthOnRef) < bpStart || alignment.start > bpEnd) {\n                return\n            }\n\n            const blocks = showSoftClips ? alignment.blocks : alignment.blocks.filter(b => 'S' !== b.type)\n\n            let alignmentColor = this.getAlignmentColor(alignment)\n            const outlineColor = alignmentColor\n            if (alignment.mq <= 0) {\n                alignmentColor = IGVColor.addAlpha(alignmentColor, 0.15)\n            }\n            IGVGraphics.setProperties(ctx, {fillStyle: alignmentColor, strokeStyle: outlineColor})\n\n            // Save bases to draw into an array for later drawing, so they can be overlaid on insertion blocks,\n            // which is relevant if we have insertions with size label\n            const basesToDraw = []\n\n            for (let b = 0; b < blocks.length; b++) {   // Can't use forEach here -- we need ability to break\n\n                const block = blocks[b]\n\n                // Somewhat complex test, neccessary to insure gaps are drawn.\n                // If this is not the last block, and the next block starts before the orign (off screen to left) then skip.\n                if ((b !== blocks.length - 1) && blocks[b + 1].start < bpStart) continue\n\n                // drawBlock returns bases to draw, which are drawn on top of insertion blocks (if they're wider than\n                // the space between two bases) like in Java IGV\n                basesToDraw.push(...drawBlock.call(this, block, b))\n\n                if ((block.start + block.len) > bpEnd) {\n                    // Do this after drawBlock to insure gaps are drawn\n                    break\n                }\n            }\n\n            if (alignment.gaps) {\n                const yStrokedLine = yRect + alignmentHeight / 2\n                for (let gap of alignment.gaps) {\n                    const sPixel = (gap.start - bpStart) / bpPerPixel\n                    const ePixel = ((gap.start + gap.len) - bpStart) / bpPerPixel\n                    const lineWidth = ePixel - sPixel\n                    const gapLenText = gap.len.toString()\n                    const gapTextWidth = gapLenText.length * 6\n                    const gapCenter = sPixel + (lineWidth / 2)\n\n                    const color = (\"D\" === gap.type) ? this.deletionColor : this.skippedColor\n\n                    IGVGraphics.strokeLine(ctx, sPixel, yStrokedLine, ePixel, yStrokedLine, {\n                        strokeStyle: color,\n                        lineWidth: 2,\n                    })\n\n                    // Add gap width as text like Java IGV if it fits nicely and is a multi-base gap\n                    if (this.showDeletionText && gap.len > 1 && lineWidth >= gapTextWidth + 8) {\n                        const textStart = gapCenter - (gapTextWidth / 2)\n                        IGVGraphics.fillRect(ctx, textStart - 1, yRect - 1, gapTextWidth + 2, 12, {fillStyle: \"white\"})\n                        IGVGraphics.fillText(ctx, gapLenText, textStart, yRect + 10, {\n                            'font': 'normal 10px monospace',\n                            'fillStyle': this.deletionTextColor,\n                        })\n                    }\n                }\n            }\n\n            if (alignment.insertions && this.parent.showInsertions) {\n                let lastXBlockStart = -1\n                for (let insertionBlock of alignment.insertions) {\n                    if (this.hideSmallIndels && insertionBlock.len <= this.indelSizeThreshold) {\n                        continue\n                    }\n                    if (insertionBlock.start < bpStart) {\n                        continue\n                    }\n                    if (insertionBlock.start > bpEnd) {\n                        break\n                    }\n\n                    const refOffset = insertionBlock.start - bpStart\n                    const insertLenText = insertionBlock.len.toString()\n\n                    const textPixelWidth = 2 + (insertLenText.length * 6)\n                    const basePixelWidth = (!this.showInsertionText || insertionBlock.len === 1)\n                        ? 2\n                        : Math.round(insertionBlock.len / bpPerPixel)\n                    const widthBlock = Math.max(Math.min(textPixelWidth, basePixelWidth), 2)\n\n                    const xBlockStart = (refOffset / bpPerPixel) - (widthBlock / 2)\n                    if ((xBlockStart - lastXBlockStart) > 2) {\n                        const props = {fillStyle: this.insertionColor}\n\n                        // Draw decorations like Java IGV to make an 'I' shape\n                        IGVGraphics.fillRect(ctx, xBlockStart - 2, yRect, widthBlock + 4, 2, props)\n                        IGVGraphics.fillRect(ctx, xBlockStart, yRect + 2, widthBlock, alignmentHeight - 4, props)\n                        IGVGraphics.fillRect(ctx, xBlockStart - 2, yRect + alignmentHeight - 2, widthBlock + 4, 2, props)\n\n                        // Show # of inserted bases as text if it's a multi-base insertion and the insertion block\n                        // is wide enough to hold text (its size is capped at the text label size, but can be smaller\n                        // if the browser is zoomed out and the insertion is small)\n                        if (this.showInsertionText && insertionBlock.len > 1 && basePixelWidth > textPixelWidth) {\n                            IGVGraphics.fillText(ctx, insertLenText, xBlockStart + 1, yRect + 10, {\n                                'font': 'normal 10px monospace',\n                                'fillStyle': this.insertionTextColor,\n                            })\n                        }\n                        lastXBlockStart = xBlockStart\n                    }\n                }\n            }\n\n            basesToDraw.forEach(({bbox, baseColor, readChar}) => {\n                renderBlockOrReadChar(ctx, bpPerPixel, bbox, baseColor, readChar)\n            })\n\n\n            function drawBlock(block, b) {\n                // Collect bases to draw for later rendering\n                const blockBasesToDraw = []\n\n                const offsetBP = block.start - alignmentContainer.start\n                const blockStartPixel = (block.start - bpStart) / bpPerPixel\n                const blockEndPixel = ((block.start + block.len) - bpStart) / bpPerPixel\n                const blockWidthPixel = Math.max(1, blockEndPixel - blockStartPixel)\n\n                //const arrowHeadWidthPixel = alignmentRowHeight / 2.0;\n                const nomPixelWidthOnRef = 100 / bpPerPixel\n                const arrowHeadWidthPixel = Math.min(alignmentRowHeight / 2.0, nomPixelWidthOnRef / 6)\n\n                const isSoftClip = 'S' === block.type\n\n                const strokeOutline =\n                    alignment.mq <= 0 ||\n                    this.highlightedAlignmentReadNamed === alignment.readName ||\n                    isSoftClip\n\n                let blockOutlineColor = outlineColor\n                if (this.highlightedAlignmentReadNamed === alignment.readName) blockOutlineColor = 'red'\n                else if (isSoftClip) blockOutlineColor = 'rgb(50,50,50)'\n\n                const lastBlockPositiveStrand = (true === alignment.strand && b === blocks.length - 1)\n                const lastBlockReverseStrand = (false === alignment.strand && b === 0)\n                const lastBlock = lastBlockPositiveStrand | lastBlockReverseStrand\n\n                if (lastBlock) {\n                    let xListPixel\n                    let yListPixel\n                    if (lastBlockPositiveStrand) {\n                        xListPixel = [\n                            blockStartPixel,\n                            blockEndPixel,\n                            blockEndPixel + arrowHeadWidthPixel,\n                            blockEndPixel,\n                            blockStartPixel,\n                            blockStartPixel]\n                        yListPixel = [\n                            yRect,\n                            yRect,\n                            yRect + (alignmentHeight / 2.0),\n                            yRect + alignmentHeight,\n                            yRect + alignmentHeight,\n                            yRect]\n\n                    }\n\n                    // Last block on - strand ?\n                    else if (lastBlockReverseStrand) {\n                        xListPixel = [\n                            blockEndPixel,\n                            blockStartPixel,\n                            blockStartPixel - arrowHeadWidthPixel,\n                            blockStartPixel,\n                            blockEndPixel,\n                            blockEndPixel]\n                        yListPixel = [\n                            yRect,\n                            yRect,\n                            yRect + (alignmentHeight / 2.0),\n                            yRect + alignmentHeight,\n                            yRect + alignmentHeight,\n                            yRect]\n\n                    }\n                    IGVGraphics.fillPolygon(ctx, xListPixel, yListPixel, {fillStyle: alignmentColor})\n\n                    if (strokeOutline) {\n                        IGVGraphics.strokePolygon(ctx, xListPixel, yListPixel, {strokeStyle: blockOutlineColor})\n                    }\n                }\n\n                // Internal block\n                else {\n                    IGVGraphics.fillRect(ctx, blockStartPixel, yRect, blockWidthPixel, alignmentHeight, {fillStyle: alignmentColor})\n\n                    if (strokeOutline) {\n                        ctx.save()\n                        ctx.strokeStyle = blockOutlineColor\n                        ctx.strokeRect(blockStartPixel, yRect, blockWidthPixel, alignmentHeight)\n                        ctx.restore()\n                    }\n                }\n\n\n                // Read base coloring\n\n                if (isSoftClip ||\n                    showAllBases ||\n                    this.parent.showMismatches && (referenceSequence && alignment.seq && alignment.seq !== \"*\")) {\n\n                    const seq = alignment.seq ? alignment.seq.toUpperCase() : undefined\n                    const qual = alignment.qual\n                    const seqOffset = block.seqOffset\n                    const widthPixel = Math.max(1, 1 / bpPerPixel)\n\n\n                    for (let i = 0, len = block.len; i < len; i++) {\n\n                        const xPixel = ((block.start + i) - bpStart) / bpPerPixel\n\n                        if (xPixel + widthPixel < 0) continue   // Off left edge\n                        if (xPixel > pixelWidth) break  // Off right edge\n\n                        let readChar = seq ? seq.charAt(seqOffset + i) : ''\n                        const refChar = offsetBP + i >= 0 ? referenceSequence.charAt(offsetBP + i) : ''\n\n                        if (readChar === \"=\") {\n                            readChar = refChar\n                        }\n                        if (readChar === \"X\" || refChar !== readChar || isSoftClip || showAllBases) {\n\n                            let baseColor\n                            if (!isSoftClip && qual !== undefined && qual.length > seqOffset + i) {\n                                const readQual = qual[seqOffset + i]\n                                baseColor = shadedBaseColor(readQual, nucleotideColors[readChar])\n                            } else {\n                                baseColor = nucleotideColors[readChar]\n                            }\n                            if (baseColor) {\n                                blockBasesToDraw.push({\n                                    bbox: {\n                                        x: xPixel,\n                                        y: yRect,\n                                        width: widthPixel,\n                                        height: alignmentHeight\n                                    },\n                                    baseColor,\n                                    readChar,\n                                })\n                            }\n                        }\n                    }\n                }\n\n                return blockBasesToDraw\n            }\n\n            function renderBlockOrReadChar(context, bpp, bbox, color, char) {\n                var threshold,\n                    center\n\n                threshold = 1.0 / 10.0\n                if (bpp <= threshold && bbox.height >= 8) {\n\n                    // render letter\n                    const fontHeight = Math.min(10, bbox.height)\n                    context.font = '' + fontHeight + 'px sans-serif'\n                    center = bbox.x + (bbox.width / 2.0)\n                    IGVGraphics.strokeText(context, char, center - (context.measureText(char).width / 2), fontHeight - 1 + bbox.y, {strokeStyle: color})\n                } else {\n\n                    // render colored block\n                    IGVGraphics.fillRect(context, bbox.x, bbox.y, bbox.width, bbox.height, {fillStyle: color})\n                }\n            }\n        }\n\n    };\n\n    popupData(clickState) {\n        const clickedObject = this.getClickedObject(clickState)\n        return clickedObject ? clickedObject.popupData(clickState.genomicLocation) : undefined\n    };\n\n    contextMenuItemList(clickState) {\n\n        const viewport = clickState.viewport\n        const list = []\n\n        const sortByOption = (option) => {\n            const cs = this.parent.sortObject\n            const direction = (cs && cs.position === Math.floor(clickState.genomicLocation)) ? !cs.direction : true\n            const newSortObject = {\n                chr: viewport.referenceFrame.chr,\n                position: Math.floor(clickState.genomicLocation),\n                option: option,\n                direction: direction\n            }\n            this.parent.sortObject = newSortObject\n            viewport.cachedFeatures.sortRows(newSortObject)\n            viewport.repaint()\n        }\n        list.push('<b>Sort by...</b>')\n        list.push({label: '&nbsp; base', click: () => sortByOption(\"BASE\")})\n        list.push({label: '&nbsp; read strand', click: () => sortByOption(\"STRAND\")})\n        list.push({label: '&nbsp; insert size', click: () => sortByOption(\"INSERT_SIZE\")})\n        list.push({label: '&nbsp; gap size', click: () => sortByOption(\"GAP_SIZE\")})\n        list.push({label: '&nbsp; chromosome of mate', click: () => sortByOption(\"MATE_CHR\")})\n        list.push({label: '&nbsp; mapping quality', click: () => sortByOption(\"MQ\")})\n        list.push({label: '&nbsp; read name', click: () => sortByOption(\"READ_NAME\")})\n        list.push({label: '&nbsp; aligned read length', click: () => sortByOption(\"ALIGNED_READ_LENGTH\")})\n        list.push({\n            label: '&nbsp; tag', click: () => {\n                const cs = this.parent.sortObject\n                const direction = (cs && cs.position === Math.floor(clickState.genomicLocation)) ? !cs.direction : true\n                const config =\n                    {\n                        label: 'Tag Name',\n                        value: this.sortByTag ? this.sortByTag : '',\n                        callback: (tag) => {\n                            if (tag) {\n                                const newSortObject = {\n                                    chr: viewport.referenceFrame.chr,\n                                    position: Math.floor(clickState.genomicLocation),\n                                    option: \"TAG\",\n                                    tag: tag,\n                                    direction: direction\n                                }\n                                this.sortByTag = tag\n                                this.parent.sortObject = newSortObject\n                                viewport.cachedFeatures.sortRows(newSortObject)\n                                viewport.repaint()\n                            }\n                        }\n                    }\n                this.browser.inputDialog.present(config, clickState.event)\n            }\n        })\n        list.push('<hr/>')\n\n        const clickedObject = this.getClickedObject(clickState)\n\n        if (clickedObject) {\n\n            const showSoftClips = this.parent.showSoftClips\n            const clickedAlignment = (typeof clickedObject.alignmentContaining === 'function') ?\n                clickedObject.alignmentContaining(clickState.genomicLocation, showSoftClips) :\n                clickedObject\n            if (clickedAlignment) {\n                if (clickedAlignment.isPaired() && clickedAlignment.isMateMapped()) {\n                    list.push({\n                        label: 'View mate in split screen',\n                        click: () => {\n                            if (clickedAlignment.mate) {\n                                const referenceFrame = clickState.viewport.referenceFrame\n                                if (this.browser.genome.getChromosome(clickedAlignment.mate.chr)) {\n                                    this.highlightedAlignmentReadNamed = clickedAlignment.readName\n                                    //this.browser.presentMultiLocusPanel(clickedAlignment, referenceFrame)\n                                    const bpWidth = referenceFrame.end - referenceFrame.start\n                                    const frameStart = clickedAlignment.mate.position - bpWidth / 2\n                                    const frameEnd = clickedAlignment.mate.position + bpWidth / 2\n                                    this.browser.addMultiLocusPanel(clickedAlignment.mate.chr, frameStart, frameEnd, referenceFrame)\n                                } else {\n                                    this.browser.alert.present(`Reference does not contain chromosome: ${clickedAlignment.mate.chr}`)\n                                }\n                            }\n                        },\n                        init: undefined\n                    })\n                }\n\n                list.push({\n                    label: 'View read sequence',\n                    click: () => {\n                        const seqstring = clickedAlignment.seq //.map(b => String.fromCharCode(b)).join(\"\");\n                        if (!seqstring || \"*\" === seqstring) {\n                            this.browser.alert.present(\"Read sequence: *\")\n                        } else {\n                            this.browser.alert.present(seqstring)\n                        }\n                    }\n                })\n\n                if (isSecureContext()) {\n                    list.push({\n                        label: 'Copy read sequence',\n                        click: async () => {\n                            const seq = clickedAlignment.seq //.map(b => String.fromCharCode(b)).join(\"\");\n                            try {\n                                //console.log(`seq: ${seq}`)\n                                await navigator.clipboard.writeText(seq)\n                            } catch (e) {\n                                console.error(e)\n                                this.browser.alert.present(`error copying sequence to clipboard ${e}`)\n                            }\n\n                        }\n                    })\n                }\n\n                // TODO if genome supports blat\n                const seqstring = clickedAlignment.seq\n                if (seqstring && \"*\" != seqstring) {\n\n                    if (seqstring.length < maxSequenceSize) {\n                        list.push({\n                            label: 'BLAT read sequence',\n                            click: () => {\n                                const sequence = clickedAlignment.isNegativeStrand() ? reverseComplementSequence(seqstring) : seqstring\n                                const name = `${clickedAlignment.readName} - blat`\n                                const title = `${this.parent.name} - ${name}`\n                                createBlatTrack({sequence, browser: this.browser, name, title})\n                            }\n                        })\n                    }\n\n                    const softClips = clickedAlignment.softClippedBlocks()\n                    if (softClips.left && softClips.left.len > MINIMUM_BLAT_LENGTH && softClips.left.len < maxSequenceSize) {\n                        list.push({\n                            label: 'BLAT left soft-clipped sequence',\n                            click: () => {\n                                const clippedSequence = seqstring.substr(softClips.left.seqOffset, softClips.left.len)\n                                const sequence = clickedAlignment.isNegativeStrand() ? reverseComplementSequence(clippedSequence) : clippedSequence\n                                const name = `${clickedAlignment.readName} - blat left clip`\n                                const title = `${this.parent.name} - ${name}`\n                                createBlatTrack({sequence, browser: this.browser, name, title})\n                            }\n                        })\n                    }\n                    if (softClips.right && softClips.right.len > MINIMUM_BLAT_LENGTH && softClips.right.len < maxSequenceSize) {\n                        list.push({\n                            label: 'BLAT right soft-clipped sequence',\n                            click: () => {\n                                const clippedSequence = seqstring.substr(softClips.right.seqOffset, softClips.right.len)\n                                const sequence = clickedAlignment.isNegativeStrand() ? reverseComplementSequence(clippedSequence) : clippedSequence\n                                const name = `${clickedAlignment.readName} - blat right clip`\n                                const title = `${this.parent.name} - ${name}`\n                                createBlatTrack({sequence, browser: this.browser, name, title})\n                            }\n                        })\n                    }\n                }\n\n                list.push('<hr/>')\n            }\n        }\n\n        // Experimental JBrowse feature\n        if (this.browser.circularView && (this.hasPairs || this.hasSupplemental)) {\n            if (this.hasPairs) {\n                list.push({\n                    label: 'Add discordant pairs to circular view',\n                    click: () => {\n                        this.parent.addPairedChordsForViewport(viewport)\n                    }\n                })\n            }\n            if (this.hasSupplemental) {\n                list.push({\n                    label: 'Add split reads to circular view',\n                    click: () => {\n                        this.parent.addSplitChordsForViewport(viewport)\n                    }\n                })\n            }\n            list.push('<hr/>')\n        }\n\n        return list\n\n    }\n\n    getClickedObject(clickState) {\n\n        const viewport = clickState.viewport\n        const y = clickState.y\n        const genomicLocation = clickState.genomicLocation\n\n        const showSoftClips = this.parent.showSoftClips\n\n        let features = viewport.cachedFeatures\n        if (!features || features.length === 0) return\n\n        let packedAlignmentRows = features.packedAlignmentRows\n        let downsampledIntervals = features.downsampledIntervals\n        const alignmentRowHeight = this.displayMode === \"SQUISHED\" ?\n            this.squishedRowHeight :\n            this.alignmentRowHeight\n\n        let packedAlignmentsIndex = Math.floor((y - this.top - this.alignmentsYOffset) / alignmentRowHeight)\n\n        if (packedAlignmentsIndex < 0) {\n            for (let i = 0; i < downsampledIntervals.length; i++) {\n                if (downsampledIntervals[i].start <= genomicLocation && (downsampledIntervals[i].end >= genomicLocation)) {\n                    return downsampledIntervals[i]\n                }\n            }\n        } else if (packedAlignmentsIndex < packedAlignmentRows.length) {\n            const alignmentRow = packedAlignmentRows[packedAlignmentsIndex]\n            const clicked = alignmentRow.alignments.filter(alignment => alignment.containsLocation(genomicLocation, showSoftClips))\n            if (clicked.length > 0) return clicked[0]\n        }\n\n        return undefined\n\n    };\n\n    /**\n     * Return the color for connectors in paired alignment view.   If explicitly set return that, otherwise return\n     * the alignment color, unless the color option can result in split colors (separte color for each mate).\n     *\n     * @param alignment\n     * @returns {string}\n     */\n    getConnectorColor(alignment) {\n\n        if (this.pairConnectorColor) {\n            return this.pairConnectorColor\n        }\n\n        switch (this.colorBy) {\n            case \"strand\":\n            case \"firstOfPairStrand\":\n            case \"pairOrientation\":\n            case \"tag\":\n                if (this.parent.color) {\n                    return (typeof this.parent.color === \"function\") ? this.parent.color(alignment) : this.parent.color\n                } else {\n                    return DEFAULT_CONNECTOR_COLOR\n                }\n            default:\n                return this.getAlignmentColor(alignment)\n\n        }\n    }\n\n    getAlignmentColor(alignment) {\n\n        let color = DEFAULT_ALIGNMENT_COLOR   // The default color if nothing else applies\n        if (this.parent.color) {\n            color = (typeof this.parent.color === \"function\") ? this.parent.color(alignment) : this.parent.color\n        } else {\n            color = DEFAULT_ALIGNMENT_COLOR\n        }\n        const option = this.colorBy\n        switch (option) {\n            case \"strand\":\n                color = alignment.strand ? this.posStrandColor : this.negStrandColor\n                break\n\n            case \"firstOfPairStrand\":\n\n                if (alignment instanceof PairedAlignment) {\n                    color = alignment.firstOfPairStrand() ? this.posStrandColor : this.negStrandColor\n                } else if (alignment.isPaired()) {\n\n                    if (alignment.isFirstOfPair()) {\n                        color = alignment.strand ? this.posStrandColor : this.negStrandColor\n                    } else if (alignment.isSecondOfPair()) {\n                        color = alignment.strand ? this.negStrandColor : this.posStrandColor\n                    } else {\n                        console.error(\"ERROR. Paired alignments are either first or second.\")\n                    }\n                }\n                break\n\n            case \"unexpectedPair\":\n            case \"pairOrientation\":\n\n                if (this.pairOrientation && alignment.pairOrientation) {\n                    const oTypes = orientationTypes[this.pairOrientation]\n                    if (oTypes) {\n                        const pairColor = this.pairColors[oTypes[alignment.pairOrientation]]\n                        if (pairColor) {\n                            color = pairColor\n                            break\n                        }\n                    }\n                }\n                if (\"pairOrientation\" === option) {\n                    break\n                }\n\n            case \"tlen\":\n            case \"fragmentLength\":\n\n                if (alignment.mate && alignment.isMateMapped()) {\n                    if (alignment.mate.chr !== alignment.chr) {\n                        color = getChrColor(alignment.mate.chr)\n                    } else if (this.parent.minTemplateLength && Math.abs(alignment.fragmentLength) < this.parent.minTemplateLength) {\n                        color = this.smallTLENColor\n                    } else if (this.parent.maxTemplateLength && Math.abs(alignment.fragmentLength) > this.parent.maxTemplateLength) {\n                        color = this.largeTLENColor\n                    }\n                }\n                break\n\n            case \"tag\":\n                const tagValue = alignment.tags()[this.colorByTag]\n                if (tagValue !== undefined) {\n                    if (this.bamColorTag === this.colorByTag) {\n                        // UCSC style color option\n                        color = \"rgb(\" + tagValue + \")\"\n                    } else {\n\n                        if (!this.tagColors) {\n                            this.tagColors = new PaletteColorTable(\"Set1\")\n                        }\n                        color = this.tagColors.getColor(tagValue)\n                    }\n                }\n                break\n        }\n\n        return color\n\n    }\n}\n\nfunction shadedBaseColor(qual, baseColor) {\n\n    const minQ = 5   //prefs.getAsInt(PreferenceManager.SAM_BASE_QUALITY_MIN),\n    const maxQ = 20  //prefs.getAsInt(PreferenceManager.SAM_BASE_QUALITY_MAX);\n\n    let alpha\n    if (qual < minQ) {\n        alpha = 0.1\n    } else {\n        alpha = Math.max(0.1, Math.min(1.0, 0.1 + 0.9 * (qual - minQ) / (maxQ - minQ)))\n    }\n    // Round alpha to nearest 0.1\n    alpha = Math.round(alpha * 10) / 10.0\n\n    if (alpha < 1) {\n        baseColor = IGVColor.addAlpha(baseColor, alpha)\n    }\n    return baseColor\n}\n\nconst orientationTypes = {\n\n    \"fr\": {\n        \"F1R2\": \"LR\",\n        \"F2R1\": \"LR\",\n        \"F1F2\": \"LL\",\n        \"F2F1\": \"LL\",\n        \"R1R2\": \"RR\",\n        \"R2R1\": \"RR\",\n        \"R1F2\": \"RL\",\n        \"R2F1\": \"RL\"\n    },\n\n    \"rf\": {\n        \"R1F2\": \"LR\",\n        \"R2F1\": \"LR\",\n        \"R1R2\": \"LL\",\n        \"R2R1\": \"LL\",\n        \"F1F2\": \"RR\",\n        \"F2F1\": \"RR\",\n        \"F1R2\": \"RL\",\n        \"F2R1\": \"RL\"\n    },\n\n    \"ff\": {\n        \"F2F1\": \"LR\",\n        \"R1R2\": \"LR\",\n        \"F2R1\": \"LL\",\n        \"R1F2\": \"LL\",\n        \"R2F1\": \"RR\",\n        \"F1R2\": \"RR\",\n        \"R2R1\": \"RL\",\n        \"F1F2\": \"RL\"\n    }\n}\n\nexport function getChrColor(chr) {\n    if (chrColorMap[chr]) {\n        return chrColorMap[chr]\n    } else if (chrColorMap[\"chr\" + chr]) {\n        const color = chrColorMap[\"chr\" + chr]\n        chrColorMap[chr] = color\n        return color\n    } else {\n        const color = IGVColor.randomRGB(0, 255)\n        chrColorMap[chr] = color\n        return color\n    }\n}\n\nconst chrColorMap = {\n    \"chrX\": \"rgb(204, 153, 0)\",\n    \"chrY\": \"rgb(153, 204, 0)\",\n    \"chrUn\": \"rgb(50, 50, 50)\",\n    \"chr1\": \"rgb(80, 80, 255)\",\n    \"chrI\": \"rgb(139, 155, 187)\",\n    \"chr2\": \"rgb(206, 61, 50)\",\n    \"chrII\": \"rgb(206, 61, 50)\",\n    \"chr2a\": \"rgb(216, 71, 60)\",\n    \"chr2b\": \"rgb(226, 81, 70)\",\n    \"chr3\": \"rgb(116, 155, 88)\",\n    \"chrIII\": \"rgb(116, 155, 88)\",\n    \"chr4\": \"rgb(240, 230, 133)\",\n    \"chrIV\": \"rgb(240, 230, 133)\",\n    \"chr5\": \"rgb(70, 105, 131)\",\n    \"chr6\": \"rgb(186, 99, 56)\",\n    \"chr7\": \"rgb(93, 177, 221)\",\n    \"chr8\": \"rgb(128, 34, 104)\",\n    \"chr9\": \"rgb(107, 215, 107)\",\n    \"chr10\": \"rgb(213, 149, 167)\",\n    \"chr11\": \"rgb(146, 72, 34)\",\n    \"chr12\": \"rgb(131, 123, 141)\",\n    \"chr13\": \"rgb(199, 81, 39)\",\n    \"chr14\": \"rgb(213, 143, 92)\",\n    \"chr15\": \"rgb(122, 101, 165)\",\n    \"chr16\": \"rgb(228, 175, 105)\",\n    \"chr17\": \"rgb(59, 27, 83)\",\n    \"chr18\": \"rgb(205, 222, 183)\",\n    \"chr19\": \"rgb(97, 42, 121)\",\n    \"chr20\": \"rgb(174, 31, 99)\",\n    \"chr21\": \"rgb(231, 199, 111)\",\n    \"chr22\": \"rgb(90, 101, 94)\",\n    \"chr23\": \"rgb(204, 153, 0)\",\n    \"chr24\": \"rgb(153, 204, 0)\",\n    \"chr25\": \"rgb(51, 204, 0)\",\n    \"chr26\": \"rgb(0, 204, 51)\",\n    \"chr27\": \"rgb(0, 204, 153)\",\n    \"chr28\": \"rgb(0, 153, 204)\",\n    \"chr29\": \"rgb(10, 71, 255)\",\n    \"chr30\": \"rgb(71, 117, 255)\",\n    \"chr31\": \"rgb(255, 194, 10)\",\n    \"chr32\": \"rgb(255, 209, 71)\",\n    \"chr33\": \"rgb(153, 0, 51)\",\n    \"chr34\": \"rgb(153, 26, 0)\",\n    \"chr35\": \"rgb(153, 102, 0)\",\n    \"chr36\": \"rgb(128, 153, 0)\",\n    \"chr37\": \"rgb(51, 153, 0)\",\n    \"chr38\": \"rgb(0, 153, 26)\",\n    \"chr39\": \"rgb(0, 153, 102)\",\n    \"chr40\": \"rgb(0, 128, 153)\",\n    \"chr41\": \"rgb(0, 51, 153)\",\n    \"chr42\": \"rgb(26, 0, 153)\",\n    \"chr43\": \"rgb(102, 0, 153)\",\n    \"chr44\": \"rgb(153, 0, 128)\",\n    \"chr45\": \"rgb(214, 0, 71)\",\n    \"chr46\": \"rgb(255, 20, 99)\",\n    \"chr47\": \"rgb(0, 214, 143)\",\n    \"chr48\": \"rgb(20, 255, 177)\",\n}\n\nexport default BAMTrack\n","import TrackViewport from \"./trackViewport.js\"\nimport $ from \"./vendor/jquery-3.3.1.slim.js\"\nimport RulerSweeper from \"./rulerSweeper.js\"\nimport GenomeUtils from \"./genome/genome.js\"\nimport {IGVMath, StringUtils} from \"../node_modules/igv-utils/src/index.js\"\nimport {DOMUtils, Icon} from \"../node_modules/igv-ui/dist/igv-ui.js\"\nimport {getChrColor} from \"./bam/bamTrack.js\"\n\nlet timer\nlet currentViewport = undefined\nconst toolTipTimeout = 1e4\n\nclass RulerViewport extends TrackViewport {\n\n    constructor(trackView, $viewportColumn, referenceFrame, width) {\n        super(trackView, $viewportColumn, referenceFrame, width)\n    }\n\n    get contentDiv() {\n        return this.$viewport.get(0)\n    }\n\n    initializationHelper() {\n\n        this.$multiLocusCloseButton = $('<div>', {class: 'igv-multi-locus-close-button'})\n        this.$viewport.append(this.$multiLocusCloseButton)\n        this.$multiLocusCloseButton.get(0).appendChild(Icon.createIcon(\"times-circle\"))\n\n        this.$multiLocusCloseButton.click(() => {\n            this.browser.removeMultiLocusPanel(this.referenceFrame)\n        })\n\n        this.$rulerLabel = $('<div>', {class: 'igv-multi-locus-ruler-label'})\n        this.$viewport.append(this.$rulerLabel)\n\n        const labelToggleHandler = e => {\n\n            e.stopPropagation()\n\n            const el = e.target\n            const [ a, b ] = this.$rulerLabel.get(0).querySelectorAll('div')\n\n            if (el.isEqualNode(a)) {\n                a.style.display = 'none'\n                b.style.display = 'block'\n            } else {\n                b.style.display = 'none'\n                a.style.display = 'block'\n            }\n\n        }\n\n        let div\n        div = document.createElement('div')\n        this.$rulerLabel.append($(div))\n\n        this.$rulerLabel.get(0).addEventListener('click', async event => {\n            event.stopPropagation()\n            await this.browser.gotoMultilocusPanel(this.referenceFrame)\n        })\n\n        this.$tooltip = $('<div>', {class: 'igv-ruler-tooltip'})\n        this.$tooltip.height(this.$viewport.height())\n\n        this.$viewport.append(this.$tooltip)\n\n        this.$tooltipContent = $('<div>')\n        this.$tooltip.append(this.$tooltipContent)\n\n        this.rulerSweeper = new RulerSweeper(this, this.$viewport.get(0).parentElement, this.browser, this.referenceFrame)\n\n        this.attachMouseHandlers(GenomeUtils.isWholeGenomeView(this.referenceFrame.chr))\n\n        this.$tooltip.hide()\n\n        this.dismissLocusLabel()\n    }\n\n    presentLocusLabel(viewportWidth) {\n\n        this.$multiLocusCloseButton.show()\n\n        this.$rulerLabel.show()\n        this.$rulerLabel.get(0).style.backgroundColor = getChrColor(this.referenceFrame.chr)\n\n        const textDiv = this.$rulerLabel.get(0).querySelector('div')\n\n        const { width } = this.$rulerLabel.get(0).getBoundingClientRect()\n\n        textDiv.innerHTML = `${ this.referenceFrame.getMultiLocusLabel(viewportWidth) }`\n        const { width:textDivWidth } = textDiv.getBoundingClientRect()\n\n        if (textDivWidth/width > 0.5) {\n            textDiv.innerHTML = `${ this.referenceFrame.getMultiLocusLabelBPLengthOnly(viewportWidth) }`\n        }\n\n        //console.log(`${ Date.now() } textDiv ${ StringUtils.numberFormatter(Math.floor(textDivWidth)) }`)\n\n    }\n\n    // Use in conjuction with .igv-multi-locus-ruler-label-square-dot css class (_dom-misc.scss)\n    dismissLocusLabel() {\n        this.$rulerLabel.hide()\n        this.$multiLocusCloseButton.hide()\n    }\n\n    attachMouseHandlers(isWholeGenomeView) {\n\n        this.namespace = `.ruler_track_viewport_${this.browser.referenceFrameList.indexOf(this.referenceFrame)}`\n\n        this.$viewport.off(this.namespace)\n\n        if (true === isWholeGenomeView) {\n\n            const index = this.browser.referenceFrameList.indexOf(this.referenceFrame)\n\n            const click = `click${this.namespace}`\n            this.$viewport.on(click, (e) => {\n\n                const {x: pixel} = DOMUtils.translateMouseCoordinates(e, this.$viewport.get(0))\n                const bp = Math.round(this.referenceFrame.start + this.referenceFrame.toBP(pixel))\n\n                let searchString\n\n                const {chr} = this.browser.genome.getChromosomeCoordinate(bp)\n\n                if (1 === this.browser.referenceFrameList.length) {\n                    searchString = chr\n                } else {\n\n                    let loci = this.browser.referenceFrameList.map(({locusSearchString}) => locusSearchString)\n\n                    loci[index] = chr\n\n                    searchString = loci.join(' ')\n                }\n\n                this.browser.search(searchString)\n            })\n\n            this.$viewport.get(0).style.cursor = 'pointer'\n        } else {\n            this.$viewport.get(0).style.cursor = 'default'\n        }\n\n    }\n\n    mouseMove(event) {\n\n        if (true === this.browser.cursorGuideVisible) {\n\n            if (undefined === currentViewport) {\n                currentViewport = this\n                this.$tooltip.show()\n            } else if (currentViewport.guid !== this.guid) {\n                if (currentViewport.$tooltip) {\n                    currentViewport.$tooltip.hide()\n                }\n                this.$tooltip.show()\n                currentViewport = this\n            } else {\n                this.$tooltip.show()\n            }\n\n            const isWholeGenome = (this.browser.isMultiLocusWholeGenomeView() || GenomeUtils.isWholeGenomeView(this.referenceFrame.chr))\n\n            if (isWholeGenome) {\n                this.$tooltip.hide()\n                return\n            }\n\n            const {x} = DOMUtils.translateMouseCoordinates(event, this.$viewport.get(0))\n            const {start, bpPerPixel} = this.referenceFrame\n            const bp = Math.round(0.5 + start + Math.max(0, x) * bpPerPixel)\n\n            this.$tooltipContent.text(StringUtils.numberFormatter(bp))\n\n            const {width: ww} = this.$tooltipContent.get(0).getBoundingClientRect()\n            const {width: w} = this.$viewport.get(0).getBoundingClientRect()\n\n            this.$tooltip.css({left: `${IGVMath.clamp(x, 0, w - ww)}px`})\n\n            // hide tooltip when movement stops\n            clearTimeout(timer)\n            timer = setTimeout(() => {\n                if (this.$tooltip) this.$tooltip.hide()\n            }, toolTipTimeout)\n\n        }\n\n    }\n\n    startSpinner() {\n    }\n\n    stopSpinner() {\n    }\n\n    dispose() {\n        this.rulerSweeper.dispose()\n        super.dispose()\n    }\n\n}\n\nexport default RulerViewport\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport $ from \"./vendor/jquery-3.3.1.slim.js\"\nimport IGVGraphics from './igv-canvas.js'\nimport {DOMUtils} from \"../node_modules/igv-ui/dist/igv-ui.js\"\nimport TrackViewport from \"./trackViewport.js\"\n\nclass IdeogramViewport extends TrackViewport {\n\n    constructor(trackView, viewportColumn, referenceFrame, width) {\n        super(trackView, viewportColumn, referenceFrame, width)\n    }\n\n    initializationHelper() {\n\n        this.canvas = document.createElement('canvas')\n        this.canvas.className = 'igv-ideogram-canvas'\n        //this.$content.append($(this.canvas))\n        this.$viewport.append($(this.canvas))\n        this.ideogram_ctx = this.canvas.getContext('2d')\n\n        this.addMouseHandlers()\n    }\n\n    addMouseHandlers() {\n        this.addViewportClickHandler(this.$viewport.get(0))\n    }\n\n    addViewportClickHandler(viewport) {\n\n        this.boundClickHandler = clickHandler.bind(this)\n        viewport.addEventListener('click', this.boundClickHandler)\n\n        function clickHandler(event) {\n\n            const {xNormalized, width} = DOMUtils.translateMouseCoordinates(event, this.ideogram_ctx.canvas)\n            const {bpLength} = this.browser.genome.getChromosome(this.referenceFrame.chr)\n            const locusLength = this.referenceFrame.bpPerPixel * width\n            const chrCoveragePercentage = locusLength / bpLength\n\n            let xPercentage = xNormalized\n            if (xPercentage - (chrCoveragePercentage / 2.0) < 0) {\n                xPercentage = chrCoveragePercentage / 2.0\n            }\n\n            if (xPercentage + (chrCoveragePercentage / 2.0) > 1.0) {\n                xPercentage = 1.0 - chrCoveragePercentage / 2.0\n            }\n\n            const ss = Math.round((xPercentage - (chrCoveragePercentage / 2.0)) * bpLength)\n            const ee = Math.round((xPercentage + (chrCoveragePercentage / 2.0)) * bpLength)\n\n            this.referenceFrame.start = ss\n            this.referenceFrame.end = ee\n            this.referenceFrame.bpPerPixel = (ee - ss) / width\n\n            this.browser.updateViews(this.referenceFrame, this.browser.trackViews, true)\n\n        }\n\n    }\n\n    setWidth(width) {\n        this.$viewport.width(width)\n    }\n\n    drawSVGWithContext(context, width, height, id, x, y, yClipOffset) {\n\n        context.saveWithTranslationAndClipRect(id, x, y, width, height, yClipOffset)\n\n        this.trackView.track.draw({\n            context,\n            referenceFrame: this.referenceFrame,\n            pixelWidth: width,\n            pixelHeight: height\n        })\n\n        context.restore()\n    }\n\n    repaint() {\n        this.draw({referenceFrame: this.referenceFrame})\n    }\n\n    draw({referenceFrame}) {\n\n        IGVGraphics.configureHighDPICanvas(this.ideogram_ctx, this.$viewport.width(), this.$viewport.height())\n\n        this.trackView.track.draw({\n            context: this.ideogram_ctx,\n            referenceFrame,\n            pixelWidth: this.$viewport.width(),\n            pixelHeight: this.$viewport.height()\n        })\n    }\n\n    startSpinner() {\n    }\n\n    stopSpinner() {\n    }\n\n}\n\nexport default IdeogramViewport\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport RulerViewport from \"../rulerViewport.js\"\nimport IdeogramViewport from \"../ideogramViewport.js\"\nimport TrackViewport from \"../trackViewport.js\"\n\n\nfunction createViewport(trackView, column, referenceFrame, width) {\n\n    if ('ruler' === trackView.track.type) {\n        return new RulerViewport(trackView, column, referenceFrame, width)\n    } else if ('ideogram' === trackView.track.id) {\n        return new IdeogramViewport(trackView, column, referenceFrame, width)\n    } else {\n        const viewportObject = new TrackViewport(trackView, column, referenceFrame, width)\n\n        // if ('sequence' === trackView.track.type) {\n        //     viewportObject.$viewport.get(0).style.marginTop = '0px'\n        // }\n\n        return viewportObject\n    }\n}\n\n\nexport {createViewport}\n","import {DOMUtils} from '../node_modules/igv-ui/dist/igv-ui.js'\nimport {appleCrayonRGB} from './util/colorPalletes.js'\n\nconst maxFontSize = 10\n\nconst fontConfigureTemplate =\n    {\n        // font: '2pt sans-serif',\n        textAlign: 'start',\n        textBaseline: 'bottom',\n        strokeStyle: 'black',\n        fillStyle: 'black'\n    }\n\nclass SampleNameViewport {\n\n    constructor(trackView, column, unused, width) {\n\n        this.guid = DOMUtils.guid()\n        this.trackView = trackView\n\n        this.browser = trackView.browser\n\n        this.viewport = DOMUtils.div({class: 'igv-viewport'})\n\n        column.appendChild(this.viewport)\n\n        if (trackView.track.height) {\n            this.viewport.style.height = `${trackView.track.height}px`\n        }\n\n        this.canvas = document.createElement('canvas')\n        this.viewport.appendChild(this.canvas)\n        this.ctx = this.canvas.getContext(\"2d\")\n\n        this.trackScrollDelta = 0\n\n        this.contentTop = 0\n\n        this.setWidth(width)\n\n        if (false === this.browser.showSampleNames) {\n            this.hide()\n        }\n\n        this.addMouseHandlers()\n    }\n\n    checkCanvas() {\n\n        const dpi = window.devicePixelRatio\n        const requiredHeight = this.viewport.clientHeight\n        const requiredWidth = this.browser.sampleNameViewportWidth\n\n        if (this.canvas.width !== requiredWidth * dpi || this.canvas.height !== requiredHeight * dpi) {\n            const canvas = this.canvas\n            canvas.width = requiredWidth * dpi\n            canvas.height = requiredHeight * dpi\n            canvas.style.width = `${requiredWidth}px`\n            canvas.style.height = `${requiredHeight}px`\n            this.ctx = this.canvas.getContext(\"2d\")\n            this.ctx.scale(dpi, dpi)\n        }\n\n    }\n\n    setTop(contentTop) {\n\n        if (typeof this.trackView.track.getSamples === 'function') {\n            this.contentTop = contentTop\n            const samples = this.trackView.track.getSamples()\n            this.repaint(samples)\n        }\n\n    }\n\n    setWidth(width) {\n        this.viewport.innerWidth = width\n        this.checkCanvas()\n    }\n\n    show() {\n        this.viewport.style.display = 'block'\n    }\n\n    hide() {\n        this.viewport.style.display = 'none'\n    }\n\n    async repaint(samples) {\n\n        this.checkCanvas()\n        this.draw({context: this.ctx, samples})\n    }\n\n    draw({context, samples}) {\n\n        if (!samples || samples.names.length === 0/* || samples.height < 1*/) {\n            return\n        }\n\n        configureFont(context, fontConfigureTemplate, samples.height)\n        const sampleNameXShim = 4\n\n        context.clearRect(0, 0, context.canvas.width, context.canvas.height)\n\n        context.fillStyle = appleCrayonRGB('lead')\n\n        const viewportHeight = this.viewport.getBoundingClientRect().height\n        let y = (samples.yOffset || 0) + this.contentTop    // contentTop will always be a negative number (top relative to viewport)\n\n        for (let name of samples.names) {\n            if (y > viewportHeight) {\n                break\n            }\n            if (y + samples.height > 0) {\n                const text = name\n                const yFont = getYFont(context, text, y, samples.height)\n                context.fillText(text, sampleNameXShim, yFont)\n\n            }\n            y += samples.height\n        }\n    }\n\n    renderSVGContext(context, {deltaX, deltaY}) {\n\n        if (typeof this.trackView.track.getSamples === 'function') {\n\n            const samples = this.trackView.track.getSamples()\n\n            const yScrollDelta = 0   // This is not relevant, scrolling is handled in \"draw\"\n\n            const {width, height} = this.viewport.getBoundingClientRect()\n\n            const str = (this.trackView.track.name || this.trackView.track.id).replace(/\\W/g, '')\n            const id = `${str}_sample_names_guid_${DOMUtils.guid()}`\n\n            context.saveWithTranslationAndClipRect(id, deltaX, deltaY + yScrollDelta, width, height, -yScrollDelta)\n\n            this.draw({context, samples})\n\n            context.restore()\n        }\n    }\n\n    addMouseHandlers() {\n        this.addViewportContextMenuHandler(this.viewport)\n    }\n\n    removeMouseHandlers() {\n        this.removeViewportContextMenuHandler(this.viewport)\n    }\n\n    addViewportContextMenuHandler(viewport) {\n        this.boundContextMenuHandler = contextMenuHandler.bind(this)\n        viewport.addEventListener('contextmenu', this.boundContextMenuHandler)\n\n        function contextMenuHandler(event) {\n\n            event.preventDefault()\n            event.stopPropagation()\n\n            const config =\n                {\n                    label: 'Name Panel Width',\n                    value: this.browser.sampleNameViewportWidth,\n                    callback: newWidth => {\n                        this.browser.sampleNameViewportWidth = parseInt(newWidth)\n                        for (let {sampleNameViewport} of this.browser.trackViews) {\n                            sampleNameViewport.setWidth(this.browser.sampleNameViewportWidth)\n                        }\n                        this.browser.layoutChange()\n                    }\n                }\n\n            this.browser.inputDialog.present(config, event)\n        }\n\n    }\n\n    removeViewportContextMenuHandler(viewport) {\n        viewport.removeEventListener('contextmenu', this.boundContextMenuHandler)\n    }\n\n    dispose() {\n        this.removeMouseHandlers()\n        this.viewport.remove()\n    }\n}\n\nfunction getYFont(context, text, y, height) {\n    return y + height - getSampleNameYShim(context, text, height)\n}\n\nfunction getSampleNameYShim(context, text, h) {\n    const {actualBoundingBoxAscent, actualBoundingBoxDescent} = context.measureText(text)\n    return (h - (actualBoundingBoxAscent + actualBoundingBoxDescent)) / 2\n}\n\nfunction configureFont(ctx, {textAlign, textBaseline, strokeStyle, fillStyle}, sampleHeight) {\n    const pixels = Math.min(sampleHeight, maxFontSize)\n    ctx.font = `${pixels}px sans-serif`\n    ctx.textAlign = textAlign\n    ctx.textBaseline = textBaseline\n    ctx.fillStyle = fillStyle\n}\n\nexport default SampleNameViewport\n","\nimport MenuUtils from \"./menuUtils.js\"\nimport {DOMUtils, makeDraggable, UIUtils} from \"../../node_modules/igv-ui/dist/igv-ui.js\"\nimport {GenericColorPicker} from '../../node_modules/igv-ui/dist/igv-ui.js'\nimport {createCheckbox} from \"../igv-icons.js\"\n\nconst MenuPopup = function (parent) {\n\n    this.popover = DOMUtils.div({class: 'igv-menu-popup'})\n    parent.appendChild(this.popover)\n\n    const header = DOMUtils.div({class: 'igv-menu-popup-header'})\n    this.popover.appendChild(header)\n\n    UIUtils.attachDialogCloseHandlerWithParent(header, () => this.hide())\n\n    this.popoverContent = DOMUtils.div()\n    this.popover.appendChild(this.popoverContent)\n\n    makeDraggable(this.popover, header)\n\n    header.addEventListener('click', e => {\n        e.stopPropagation()\n        e.preventDefault()\n        // absorb click to prevent it leaking through to parent DOM element\n    })\n\n    this.hide()\n\n}\n\nMenuPopup.prototype.hide = function () {\n    this.popover.style.display = 'none'\n}\n\nMenuPopup.prototype.presentMenuList = function (menuList) {\n\n    hideAllMenuPopups()\n\n    if (menuList.length > 0) {\n\n        this.popoverContent.innerHTML = ''\n\n        menuList = MenuUtils.trackMenuItemListHelper(menuList, this)\n\n        for (let item of menuList) {\n\n            if (item.init) {\n                item.init()\n            }\n\n            let $e = item.object\n            if (0 === menuList.indexOf(item)) {\n                $e.removeClass('igv-track-menu-border-top')\n            }\n\n            if ($e.hasClass('igv-track-menu-border-top') || $e.hasClass('igv-menu-popup-check-container')) {\n                // do nothing\n            } else if ($e.is('div')) {\n                $e.addClass('igv-menu-popup-shim')\n            }\n\n            this.popoverContent.appendChild($e.get(0))\n\n        }\n\n        // NOTE: style.display most NOT be 'none' when calculating width. a display = 'none' will always\n        //       yield a width of zero (0).\n        this.popover.style.display = 'flex'\n\n        const {width} = this.popover.getBoundingClientRect()\n\n        this.popover.style.left = `${-width}px`\n        this.popover.style.top = `${0}px`\n\n    }\n}\n\nMenuPopup.prototype.presentTrackContextMenu = function (e, menuItems) {\n\n    this.popoverContent.innerHTML = ''\n\n    const menuElements = createMenuElements(menuItems, this.popover)\n    for (let {el} of menuElements) {\n        this.popoverContent.appendChild(el)\n    }\n\n    present(e, this.popover)\n\n}\n\nMenuPopup.prototype.dispose = function () {\n\n    this.popoverContent.innerHTML = ''\n    this.popover.innerHTML = ''\n\n    Object.keys(this).forEach(function (key) {\n        this[key] = undefined\n    })\n}\n\nfunction createMenuElements(itemList, popover) {\n\n    return itemList.map(item => {\n\n        let el\n\n        if (typeof item === 'string' && '<hr/>' === item) {\n            el = document.createElement('hr')\n        } else if (typeof item === 'string') {\n            el = DOMUtils.div({class: 'context-menu'})\n            el.innerHTML = item\n        } else if (typeof item === 'Node') {\n            el = item\n        } else {\n            if (typeof item.init === 'function') {\n                item.init()\n            }\n\n            if (\"checkbox\" === item.type) {\n                el = createCheckbox(\"Show all bases\", item.value)\n            } else if (\"color\" === item.type) {\n\n                const colorPicker = new GenericColorPicker({parent: popover.parentElement, width: 364})\n                colorPicker.configure(undefined, {color: color => item.click(color)})\n\n                el = DOMUtils.div({class: 'context-menu'})\n                if (typeof item.label === 'string') {\n                    el.innerHTML = item.label\n                }\n                const clickHandler = e => {\n                    colorPicker.show()\n                    DOMUtils.hide(popover)\n                    e.preventDefault()\n                    e.stopPropagation()\n                }\n                el.addEventListener('click', clickHandler)\n                el.addEventListener('touchend', clickHandler)\n                el.addEventListener('mouseup', function (e) {\n                    e.preventDefault()\n                    e.stopPropagation()\n                })\n            } else {\n                el = DOMUtils.div({class: 'context-menu'})\n                if (typeof item.label === 'string') {\n                    el.innerHTML = item.label\n                }\n            }\n\n            if (item.click && \"color\" !== item.type) {\n                el.addEventListener('click', handleClick)\n                el.addEventListener('touchend', handleClick)\n                el.addEventListener('mouseup', function (e) {\n                    e.preventDefault()\n                    e.stopPropagation()\n                })\n\n                // eslint-disable-next-line no-inner-declarations\n                function handleClick(e) {\n                    item.click()\n                    DOMUtils.hide(popover)\n                    e.preventDefault()\n                    e.stopPropagation()\n                }\n            }\n        }\n\n        return {el, init: item.init}\n    })\n\n}\n\nfunction present(e, popover) {\n\n    // NOTE: style.display most NOT be 'none' when calculating width. a display = 'none' will always\n    //       yield a width of zero (0).\n    popover.style.display = 'flex'\n\n    const {x, y} = DOMUtils.translateMouseCoordinates(e, popover.parentNode)\n    const {width} = popover.getBoundingClientRect()\n    const xmax = x + width\n\n    const {width: parentWidth} = popover.parentNode.getBoundingClientRect()\n\n    popover.style.left = `${xmax > parentWidth ? (x - (xmax - parentWidth)) : x}px`\n    popover.style.top = `${y}px`\n\n}\n\nconst hideAllMenuPopups = () => {\n\n    const menus = document.querySelectorAll('.igv-menu-popup')\n    for (let i = 0; i < menus.length; i++) {\n        menus[i].style.display = 'none'\n    }\n\n}\n\nexport default MenuPopup\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\nimport $ from \"./vendor/jquery-3.3.1.slim.js\"\nimport {doAutoscale} from \"./util/igvUtils.js\"\nimport {createViewport} from \"./util/viewportUtils.js\"\nimport {FeatureUtils, IGVColor, StringUtils} from '../node_modules/igv-utils/src/index.js'\nimport {DOMUtils, Icon} from '../node_modules/igv-ui/dist/igv-ui.js'\nimport SampleNameViewport from './sampleNameViewport.js'\nimport MenuPopup from \"./ui/menuPopup.js\"\nimport MenuUtils from \"./ui/menuUtils.js\"\n\nconst igv_axis_column_width = 50\nconst scrollbarExclusionTypes = new Set(['ruler', 'ideogram'])\nconst colorPickerExclusionTypes = new Set(['ruler', 'sequence', 'ideogram'])\n\nclass TrackView {\n\n    constructor(browser, columnContainer, track) {\n        this.browser = browser\n        this.track = track\n        track.trackView = this\n        this.addDOMToColumnContainer(browser, columnContainer, browser.referenceFrameList)\n    }\n\n    /**\n     * Start a spinner for the track on any of its viewports.  In practice this is called during initialization\n     * when there is only one.\n     */\n    startSpinner() {\n        if (this.viewports && this.viewports.length > 0) {\n            this.viewports[0].startSpinner()\n        }\n    }\n\n    stopSpinner() {\n        if (this.viewports && this.viewports.length > 0) {\n            this.viewports[0].stopSpinner()\n        }\n    }\n\n    addDOMToColumnContainer(browser, columnContainer, referenceFrameList) {\n\n        // Axis\n        this.axis = this.createAxis(browser, this.track)\n\n        // Create a viewport for each reference frame\n        this.viewports = []\n        const viewportWidth = browser.calculateViewportWidth(referenceFrameList.length)\n        const viewportColumns = columnContainer.querySelectorAll('.igv-column')\n        for (let i = 0; i < viewportColumns.length; i++) {\n            const viewport = createViewport(this, viewportColumns[i], referenceFrameList[i], viewportWidth)\n            this.viewports.push(viewport)\n        }\n\n        // SampleName Viewport\n        this.sampleNameViewport = new SampleNameViewport(this, browser.columnContainer.querySelector('.igv-sample-name-column'), undefined, browser.sampleNameViewportWidth)\n\n        // Track Scrollbar\n        this.createTrackScrollbar(browser)\n\n        // Track Drag\n        this.createTrackDragHandle(browser)\n\n        // Track Gear\n        this.createTrackGearPopup(browser)\n\n    }\n\n    createAxis(browser, track) {\n\n        const axis = DOMUtils.div()\n        browser.columnContainer.querySelector('.igv-axis-column').appendChild(axis)\n\n        axis.style.height = `${track.height}px`\n\n        if (typeof track.paintAxis === 'function') {\n            if (track.dataRange) {\n                axis.addEventListener('click', () => {\n                    browser.dataRangeDialog.configure(this)\n                    browser.dataRangeDialog.present($(browser.columnContainer))\n                })\n            }\n\n\n            const {width, height} = axis.getBoundingClientRect()\n            this.axisCanvas = document.createElement('canvas')\n            this.axisCanvas.style.width = `${width}px`\n            this.axisCanvas.style.height = `${height}px`\n            axis.appendChild(this.axisCanvas)\n        }\n\n        return axis\n\n    }\n\n    resizeAxisCanvas(width, height) {\n\n        this.axis.style.width = `${width}px`\n        this.axis.style.height = `${height}px`\n\n        if (typeof this.track.paintAxis === 'function') {\n            // Size the canvas in CSS (logical) pixels.  The buffer size will be set when painted.\n            this.axisCanvas.style.width = `${width}px`\n            this.axisCanvas.style.height = `${height}px`\n\n        }\n    }\n\n    removeDOMFromColumnContainer() {\n\n        // Axis\n        if (this.boundAxisClickHander) {\n            this.removeAxisEventListener(this.axis)\n        }\n        this.axis.remove()\n\n        // Track Viewports\n        for (let viewport of this.viewports) {\n            viewport.$viewport.remove()\n        }\n\n        // SampleName Viewport\n        this.sampleNameViewport.dispose()\n\n        // empty trackScrollbar Column\n        this.removeTrackScrollMouseHandlers()\n        this.outerScroll.remove()\n\n        // empty trackDrag Column\n        this.removeTrackDragMouseHandlers()\n        this.dragHandle.remove()\n\n        // empty trackGear Column\n        this.removeTrackGearMouseHandlers()\n        this.gearContainer.remove()\n\n    }\n\n    renderSVGContext(context, {deltaX, deltaY}) {\n\n        renderSVGAxis(context, this.track, this.axisCanvas, deltaX, deltaY)\n\n        const {width: axisWidth} = this.axis.getBoundingClientRect()\n\n        const {y} = this.viewports[0].$viewport.get(0).getBoundingClientRect()\n\n        let delta =\n            {\n                deltaX: axisWidth + deltaX,\n                deltaY: y + deltaY\n            }\n\n        for (let viewport of this.viewports) {\n            viewport.renderSVGContext(context, delta)\n            const {width} = viewport.$viewport.get(0).getBoundingClientRect()\n            delta.deltaX += width\n        }\n        \n        if (true === this.browser.showSampleNames) {\n            this.sampleNameViewport.renderSVGContext(context, delta)\n        }\n    }\n\n    dataRange() {\n        return this.track.dataRange ? this.track.dataRange : undefined\n    }\n\n    setDataRange(min, max) {\n        if (min !== undefined) {\n            this.track.dataRange.min = min\n        }\n        if (max !== undefined) {\n            this.track.dataRange.max = max\n        }\n        this.track.autoscale = false\n        this.repaintViews()\n    }\n\n    presentColorPicker(key) {\n\n        if (false === colorPickerExclusionTypes.has(this.track.type)) {\n\n            const trackColors = []\n            const color = this.track.color || this.track.defaultColor\n            if (StringUtils.isString(color)) {\n                trackColors.push(color)\n            }\n            if (this.track.altColor && StringUtils.isString(this.track.altColor)) {\n                trackColors.push(this.track.altColor)\n            }\n            const defaultColors = trackColors.map(c => c.startsWith(\"#\") ? c : c.startsWith(\"rgb(\") ? IGVColor.rgbToHex(c) : IGVColor.colorNameToHex(c))\n            const colorHandlers =\n                {\n                    color: color => {\n                        this.track.color = color\n                        this.repaintViews()\n                    },\n                    altColor: color => {\n                        this.track.altColor = color\n                        this.repaintViews()\n                    }\n\n                }\n            this.browser.genericColorPicker.configure(defaultColors, colorHandlers)\n            this.browser.genericColorPicker.setActiveColorHandler(key)\n            this.browser.genericColorPicker.show()\n        }\n\n    }\n\n    setTrackHeight(newHeight, force) {\n\n        if (!force) {\n            if (this.track.minHeight) {\n                newHeight = Math.max(this.track.minHeight, newHeight)\n            }\n            if (this.track.maxHeight) {\n                newHeight = Math.min(this.track.maxHeight, newHeight)\n            }\n        }\n\n        this.track.height = newHeight\n\n        this.resizeAxisCanvas(this.axis.clientWidth, this.track.height)\n\n        if (typeof this.track.paintAxis === 'function') {\n            this.paintAxis()\n        }\n\n        for (let {$viewport} of this.viewports) {\n            $viewport.height(newHeight)\n        }\n\n        this.sampleNameViewport.viewport.style.height = `${newHeight}px`\n\n        // If the track does not manage its own content height set it equal to the viewport height here\n        if (typeof this.track.computePixelHeight !== \"function\") {\n            for (let vp of this.viewports) {\n                vp.setContentHeight(newHeight)\n            }\n        }\n\n        this.repaintViews()\n\n        if (false === scrollbarExclusionTypes.has(this.track.type)) {\n            this.updateScrollbar()\n        }\n\n        this.dragHandle.style.height = `${newHeight}px`\n        this.gearContainer.style.height = `${newHeight}px`\n\n    }\n\n    updateScrollbar() {\n\n        const viewportHeight = this.viewports[0].$viewport.height()\n        this.outerScroll.style.height = `${viewportHeight}px`\n\n        const viewportContentHeight = this.maxViewportContentHeight()\n        const innerScrollHeight = Math.round((viewportHeight / viewportContentHeight) * viewportHeight)\n\n        if (viewportContentHeight > viewportHeight) {\n            this.innerScroll.style.display = 'block'\n            this.innerScroll.style.height = `${innerScrollHeight}px`\n        } else {\n            this.innerScroll.style.display = 'none'\n        }\n    }\n\n    moveScroller(delta) {\n\n        const y = $(this.innerScroll).position().top + delta\n        const top = Math.min(Math.max(0, y), this.outerScroll.clientHeight - this.innerScroll.clientHeight)\n        $(this.innerScroll).css('top', `${top}px`)\n\n        const contentHeight = this.maxViewportContentHeight()\n        const contentTop = -Math.round(top * (contentHeight / this.viewports[0].$viewport.height()))\n\n        for (let viewport of this.viewports) {\n            viewport.setTop(contentTop)\n        }\n\n        this.sampleNameViewport.trackScrollDelta = delta\n        this.sampleNameViewport.setTop(contentTop)\n\n    }\n\n    isLoading() {\n        for (let viewport of this.viewports) {\n            if (viewport.isLoading()) return true\n        }\n    }\n\n    /**\n     * Repaint all viewports without loading any new data.   Use this for events that change visual aspect of data,\n     * e.g. color, sort order, etc, but do not change the genomic state.\n     */\n    repaintViews() {\n\n        for (let viewport of this.viewports) {\n            if (viewport.isVisible()) {\n                viewport.repaint()\n            }\n        }\n\n        if (typeof this.track.paintAxis === 'function') {\n            this.paintAxis()\n        }\n\n        // Repaint sample names last\n        this.repaintSamples()\n    }\n\n    repaintSamples() {\n\n        if (typeof this.track.getSamples === 'function') {\n            const samples = this.track.getSamples()\n            this.sampleNameViewport.repaint(samples)\n        }\n    }\n\n    // track labels\n    setTrackLabelName(name) {\n        this.viewports.forEach(viewport => viewport.setTrackLabel(name))\n    }\n\n    /**\n     * Called in response to a window resize event, change in # of multilocus panels, or other event that changes\n     * the width of the track view.\n     *\n     * @param viewportWidth  The width of each viewport in this track view.\n     */\n    resize(viewportWidth) {\n        for (let viewport of this.viewports) {\n            viewport.setWidth(viewportWidth)\n        }\n    }\n\n    /**\n     * Update viewports to reflect current genomic state, possibly loading additional data.\n     *\n     * @param force - if true, force a repaint even if no new data is loaded\n     * @returns {Promise<void>}\n     */\n    async updateViews() {\n\n        if (!(this.browser && this.browser.referenceFrameList)) return\n\n        const visibleViewports = this.viewports.filter(viewport => viewport.isVisible())\n\n        // Shift viewports left/right to current genomic state (pans canvas)\n        visibleViewports.forEach(viewport => viewport.shift())\n\n        // If dragging (panning) return\n        if (this.browser.dragObject) {\n            return\n        }\n\n        // Filter zoomed out views.  This has the side effect or turning off or no the zoomed out notice\n        const viewportsToRepaint = visibleViewports.filter(vp => vp.needsRepaint()).filter(viewport => viewport.checkZoomIn())\n\n        // Get viewports that require a data load\n        const viewportsToReload = viewportsToRepaint.filter(viewport => viewport.needsReload())\n\n        // Trigger viewport to load features needed to cover current genomic range\n        // NOTE: these must be loaded synchronously, do not user Promise.all,  not all file readers are thread safe\n        for (let viewport of viewportsToReload) {\n            await viewport.loadFeatures()\n        }\n\n        if (this.disposed) return   // Track was removed during load\n\n        // Special case for variant tracks in multilocus view.  The # of rows to allocate to the variant (site)\n        // section depends on data from all the views.  We only need to adjust this however if any data was loaded\n        // (i.e. reloadableViewports.length > 0)\n        if (this.track && typeof this.track.variantRowCount === 'function' && viewportsToReload.length > 0) {\n            let maxRow = 0\n            for (let viewport of this.viewports) {\n                if (viewport.featureCache && viewport.featureCache.features) {\n                    maxRow = Math.max(maxRow, viewport.featureCache.features.reduce((a, f) => Math.max(a, f.row || 0), 0))\n                }\n            }\n            const current = this.track.nVariantRows\n            if (current !== maxRow + 1) {\n                this.track.variantRowCount(maxRow + 1)\n                for (let viewport of this.viewports) {\n                    viewport.checkContentHeight()\n                }\n            }\n        }\n\n        if (this.track.autoscale) {\n            let allFeatures = []\n            for (let visibleViewport of visibleViewports) {\n                const referenceFrame = visibleViewport.referenceFrame\n                const start = referenceFrame.start\n                const end = start + referenceFrame.toBP(visibleViewport.getWidth())\n                if (visibleViewport.featureCache && visibleViewport.featureCache.features) {\n                    // If the \"features\" object has a getMax function use it.  Currently only alignmentContainer implements this, for coverage.\n                    if (typeof visibleViewport.featureCache.features.getMax === 'function') {\n                        const max = visibleViewport.featureCache.features.getMax(start, end)\n                        allFeatures.push({value: max})\n                    } else {\n                        const viewFeatures = FeatureUtils.findOverlapping(visibleViewport.featureCache.features, start, end)\n                        for (let f of viewFeatures) {\n                            allFeatures.push(f)\n                        }\n                    }\n                }\n            }\n            if (typeof this.track.doAutoscale === 'function') {\n                this.track.dataRange = this.track.doAutoscale(allFeatures)\n            } else {\n                this.track.dataRange = doAutoscale(allFeatures)\n            }\n        }\n\n        const refreshView = (this.track.autoscale || this.track.autoscaleGroup || this.track.type === 'ruler')\n        for (let vp of visibleViewports) {\n            if (viewportsToRepaint.includes(vp)) {\n                vp.repaint()\n            } else if (refreshView) {\n                vp.refresh()\n            }\n        }\n\n        this.adjustTrackHeight()\n\n        // Repaint sample names last\n        this.repaintSamples()\n\n        this.updateRulerViewportLabels()\n    }\n\n    clearCachedFeatures() {\n        for (let viewport of this.viewports) {\n            viewport.clearCache()\n        }\n    }\n\n    updateRulerViewportLabels() {\n\n        const viewportWidth = this.browser.calculateViewportWidth(this.viewports.length)\n\n        for (let viewport of this.viewports) {\n            if ('ruler' === this.track.type) {\n                if (this.viewports.length > 1) {\n                    viewport.presentLocusLabel(viewportWidth)\n                } else {\n                    viewport.dismissLocusLabel()\n                }\n            }\n        }\n\n    }\n\n    /**\n     * Return a promise to get all in-view features across all viewports.  Used for group autoscaling.\n     */\n    async getInViewFeatures() {\n\n        if (!(this.browser && this.browser.referenceFrameList)) {\n            return []\n        }\n\n        let allFeatures = []\n        const visibleViewports = this.viewports.filter(viewport => viewport.isVisible())\n        for (let vp of visibleViewports) {\n\n            const referenceFrame = vp.referenceFrame\n            const {chr, start, bpPerPixel} = vp.referenceFrame\n            const end = start + referenceFrame.toBP(vp.getWidth())\n            const needsReload = !vp.featureCache || !vp.featureCache.containsRange(chr, start, end, bpPerPixel)\n\n            if (needsReload) {\n                await vp.loadFeatures()\n            }\n            if (vp.featureCache && vp.featureCache.features) {\n\n                if (typeof vp.featureCache.features.getMax === 'function') {\n                    const max = vp.featureCache.features.getMax(start, end)\n                    allFeatures.push({value: max})\n                } else {\n                    const vpFeatures = typeof vp.featureCache.queryFeatures === 'function' ?\n                        vp.featureCache.queryFeatures(chr, start, end) :\n                        FeatureUtils.findOverlapping(vp.featureCache.features, start, end)\n                    allFeatures = allFeatures.concat(vpFeatures)\n                }\n            }\n        }\n        return allFeatures\n    }\n\n    checkContentHeight() {\n\n        for (let viewport of this.viewports) {\n            viewport.checkContentHeight()\n        }\n        this.adjustTrackHeight()\n\n    }\n\n    adjustTrackHeight() {\n\n        var contentHeight = this.maxViewportContentHeight()\n        if (this.track.autoHeight) {\n            this.setTrackHeight(contentHeight, false)\n        } else if (this.track.paintAxis) {   // Avoid duplication, paintAxis is already called in setTrackHeight\n            this.paintAxis()\n        }\n\n        if (false === scrollbarExclusionTypes.has(this.track.type)) {\n\n            // Adjust scrollbar, if needed, to insure content is in view\n            const currentTop = this.viewports[0].getContentTop()\n            const viewportHeight = this.viewports[0].$viewport.height()\n            const minTop = Math.min(0, viewportHeight - contentHeight)\n            if(currentTop < minTop) {\n                 for (let viewport of this.viewports) {\n                    viewport.setTop(minTop)\n                }\n            }\n            this.updateScrollbar()\n        }\n    }\n\n    createTrackScrollbar(browser) {\n\n        const outerScroll = DOMUtils.div()\n        browser.columnContainer.querySelector('.igv-scrollbar-column').appendChild(outerScroll)\n        outerScroll.style.height = `${this.track.height}px`\n        this.outerScroll = outerScroll\n\n        if (false === scrollbarExclusionTypes.has(this.track.type)) {\n            const innerScroll = DOMUtils.div()\n            outerScroll.appendChild(innerScroll)\n            this.innerScroll = innerScroll\n\n            this.addTrackScrollMouseHandlers(browser)\n        }\n\n    }\n\n    createTrackDragHandle(browser) {\n\n        const className = 'ideogram' === this.track.type || 'ruler' === this.track.type ? 'igv-track-drag-shim' : 'igv-track-drag-handle'\n        this.dragHandle = DOMUtils.div({class: className})\n        browser.columnContainer.querySelector('.igv-track-drag-column').appendChild(this.dragHandle)\n        this.dragHandle.style.height = `${this.track.height}px`\n\n        this.addTrackDragMouseHandlers(browser)\n\n    }\n\n    createTrackGearPopup(browser) {\n\n        this.gearContainer = DOMUtils.div()\n        browser.columnContainer.querySelector('.igv-gear-menu-column').appendChild(this.gearContainer)\n        this.gearContainer.style.height = `${this.track.height}px`\n\n        if (true === this.track.ignoreTrackMenu) {\n            // do nothing\n        } else {\n\n            this.gear = DOMUtils.div()\n            this.gearContainer.appendChild(this.gear)\n            this.gear.appendChild(Icon.createIcon('cog'))\n\n            this.trackGearPopup = new MenuPopup(this.gear)\n\n            this.addTrackGearMouseHandlers()\n        }\n\n    }\n\n    addAxisEventListener(axis) {\n\n        this.boundAxisClickHander = axisClickHandler.bind(this)\n        axis.addEventListener('click', this.boundAxisClickHander)\n\n        function axisClickHandler(event) {\n            this.browser.dataRangeDialog.configure(this)\n            this.browser.dataRangeDialog.present($(this.browser.columnContainer))\n        }\n\n    }\n\n    removeAxisEventListener(axis) {\n        axis.removeEventListener('click', this.boundAxisClickHander)\n    }\n\n    addTrackScrollMouseHandlers(browser) {\n\n        // Mouse Down\n        this.boundTrackScrollMouseDownHandler = trackScrollMouseDownHandler.bind(this)\n        this.innerScroll.addEventListener('mousedown', this.boundTrackScrollMouseDownHandler)\n\n        function trackScrollMouseDownHandler(event) {\n\n            event.stopPropagation()\n\n            const {y} = DOMUtils.pageCoordinates(event)\n\n            $(this.innerScroll).data('yDown', y.toString())\n\n            this.boundColumnContainerMouseMoveHandler = columnContainerMouseMoveHandler.bind(this)\n            browser.columnContainer.addEventListener('mousemove', this.boundColumnContainerMouseMoveHandler)\n\n            function columnContainerMouseMoveHandler(event) {\n\n                event.stopPropagation()\n\n                const {y} = DOMUtils.pageCoordinates(event)\n\n                this.moveScroller(y - parseInt($(this.innerScroll).data('yDown')))\n\n                $(this.innerScroll).data('yDown', y.toString())\n\n            }\n        }\n\n        this.boundColumnContainerMouseUpHandler = columnContainerMouseUpHandler.bind(this)\n        browser.columnContainer.addEventListener('mouseup', this.boundColumnContainerMouseUpHandler)\n\n        function columnContainerMouseUpHandler(event) {\n            browser.columnContainer.removeEventListener('mousemove', this.boundColumnContainerMouseMoveHandler)\n        }\n\n    }\n\n    removeTrackScrollMouseHandlers() {\n        if (false === scrollbarExclusionTypes.has(this.track.type)) {\n            this.innerScroll.removeEventListener('mousedown', this.boundTrackScrollMouseDownHandler)\n            this.browser.columnContainer.removeEventListener('mouseup', this.boundColumnContainerMouseUpHandler)\n            this.browser.columnContainer.removeEventListener('mousemove', this.boundColumnContainerMouseMoveHandler)\n        }\n    }\n\n    addTrackDragMouseHandlers(browser) {\n\n        if ('ideogram' === this.track.id || 'ruler' === this.track.id) {\n            // do nothing\n        } else {\n\n            let currentDragHandle = undefined\n\n            // Mouse Down\n            this.boundTrackDragMouseDownHandler = trackDragMouseDownHandler.bind(this)\n            this.dragHandle.addEventListener('mousedown', this.boundTrackDragMouseDownHandler)\n\n            function trackDragMouseDownHandler(event) {\n\n                event.preventDefault()\n\n                currentDragHandle = event.target\n                currentDragHandle.classList.add('igv-track-drag-handle-hover')\n\n                browser.startTrackDrag(this)\n\n            }\n\n            // Mouse Up\n            this.boundDocumentTrackDragMouseUpHandler = documentTrackDragMouseUpHandler.bind(this)\n            document.addEventListener('mouseup', this.boundDocumentTrackDragMouseUpHandler)\n\n            function documentTrackDragMouseUpHandler(event) {\n\n                browser.endTrackDrag()\n\n                if (currentDragHandle && event.target !== currentDragHandle) {\n                    currentDragHandle.classList.remove('igv-track-drag-handle-hover')\n                }\n\n                currentDragHandle = undefined\n            }\n\n            // Mouse Enter\n            this.boundTrackDragMouseEnterHandler = trackDragMouseEnterHandler.bind(this)\n            this.dragHandle.addEventListener('mouseenter', this.boundTrackDragMouseEnterHandler)\n\n            function trackDragMouseEnterHandler(event) {\n                event.preventDefault()\n\n                if (undefined === currentDragHandle) {\n                    event.target.classList.add('igv-track-drag-handle-hover')\n                }\n\n                browser.updateTrackDrag(this)\n\n            }\n\n            // Mouse Out\n            this.dragHandle.addEventListener('mouseout', e => {\n                e.preventDefault()\n\n                if (undefined === currentDragHandle) {\n                    e.target.classList.remove('igv-track-drag-handle-hover')\n                }\n            })\n\n            this.boundTrackDragMouseOutHandler = trackDragMouseOutHandler.bind(this)\n            this.dragHandle.addEventListener('mouseout', this.boundTrackDragMouseOutHandler)\n\n            function trackDragMouseOutHandler(event) {\n                event.preventDefault()\n\n                if (undefined === currentDragHandle) {\n                    event.target.classList.remove('igv-track-drag-handle-hover')\n                }\n            }\n\n        }\n\n    }\n\n    removeTrackDragMouseHandlers() {\n\n        if ('ideogram' === this.track.id || 'ruler' === this.track.id) {\n            // do nothing\n        } else {\n            this.dragHandle.removeEventListener('mousedown', this.boundTrackDragMouseDownHandler)\n            document.removeEventListener('mouseup', this.boundDocumentTrackDragMouseUpHandler)\n            this.dragHandle.removeEventListener('mouseup', this.boundTrackDragMouseEnterHandler)\n            this.dragHandle.removeEventListener('mouseout', this.boundTrackDragMouseOutHandler)\n        }\n\n    }\n\n    addTrackGearMouseHandlers() {\n        if (true === this.track.ignoreTrackMenu) {\n            // do nothing\n        } else {\n\n            this.boundTrackGearClickHandler = trackGearClickHandler.bind(this)\n            this.gear.addEventListener('click', this.boundTrackGearClickHandler)\n\n            function trackGearClickHandler(event) {\n                event.preventDefault()\n                event.stopPropagation()\n                this.trackGearPopup.presentMenuList(MenuUtils.trackMenuItemList(this))\n            }\n\n        }\n\n    }\n\n    removeTrackGearMouseHandlers() {\n        if (true === this.track.ignoreTrackMenu) {\n            // do nothing\n        } else {\n            this.gear.removeEventListener('click', this.boundTrackGearClickHandler)\n        }\n\n    }\n\n    /**\n     * Do any cleanup here\n     */\n    dispose() {\n\n        this.removeAxisEventListener(this.axis)\n        this.axis.remove()\n\n        for (let viewport of this.viewports) {\n            viewport.dispose()\n        }\n\n        this.sampleNameViewport.dispose()\n\n        this.removeTrackScrollMouseHandlers()\n        this.outerScroll.remove()\n\n        this.removeTrackDragMouseHandlers()\n        this.dragHandle.remove()\n\n        this.removeTrackGearMouseHandlers()\n        this.gearContainer.remove()\n\n        if (typeof this.track.dispose === \"function\") {\n            this.track.dispose()\n        }\n\n        for (let key of Object.keys(this)) {\n            this[key] = undefined\n        }\n\n        if (this.alert) {\n            this.alert.container.remove()    // This is quite obviously a hack, need a \"dispose\" method on AlertDialog\n        }\n\n        this.disposed = true\n    }\n\n    paintAxis() {\n\n        if (typeof this.track.paintAxis === 'function') {\n\n            // Set the canvas buffer size, this is the resolution it is drawn at.  This is done here in case the browser\n            // has been drug between screens at different dpi resolutions since the last repaint\n            const {width, height} = this.axisCanvas.getBoundingClientRect()\n            const dpi = window.devicePixelRatio || 1\n            this.axisCanvas.height = dpi * height\n            this.axisCanvas.width = dpi * width\n\n            // Get a scaled context to draw aon\n            const axisCanvasContext = this.axisCanvas.getContext('2d')\n            axisCanvasContext.scale(dpi, dpi)\n\n            this.track.paintAxis(axisCanvasContext, width, height)\n        }\n    }\n\n    maxViewportContentHeight() {\n        return Math.max(this.viewports.map(viewport => viewport.getContentHeight()))\n    }\n\n}\n\nfunction renderSVGAxis(context, track, axisCanvas, deltaX, deltaY) {\n\n    if (typeof track.paintAxis === 'function') {\n\n        const {y, width, height} = axisCanvas.getBoundingClientRect()\n\n        const str = (track.name || track.id).replace(/\\W/g, '')\n        const id = `${str}_axis_guid_${DOMUtils.guid()}`\n\n        context.saveWithTranslationAndClipRect(id, deltaX, y + deltaY, width, height, 0)\n\n        track.paintAxis(context, width, height)\n\n        context.restore()\n    }\n\n}\n\n\nexport {igv_axis_column_width}\nexport default TrackView\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport FeatureSource from './featureSource.js'\nimport TDFSource from \"../tdf/tdfSource.js\"\nimport TrackBase from \"../trackBase.js\"\nimport BWSource from \"../bigwig/bwSource.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport paintAxis from \"../util/paintAxis.js\"\nimport {IGVColor, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport MenuUtils from \"../ui/menuUtils.js\"\n\nconst DEFAULT_COLOR = 'rgb(150, 150, 150)'\n\nclass WigTrack extends TrackBase {\n\n    static defaults = {\n        height: 50,\n        flipAxis: false,\n        logScale: false,\n        windowFunction: 'mean',\n        graphType: 'bar',\n        autoscale: true,\n        normalize: undefined,\n        scaleFactor: undefined\n    }\n\n    constructor(config, browser) {\n        super(config, browser)\n    }\n\n    init(config) {\n\n        super.init(config)\n\n        this.type = \"wig\"\n        this.featureType = 'numeric'\n        this.paintAxis = paintAxis\n\n        const format = config.format ? config.format.toLowerCase() : config.format\n        if (config.featureSource) {\n            this.featureSource = config.featureSource\n            delete config.featureSource\n        } else if (\"bigwig\" === format) {\n            this.featureSource = new BWSource(config, this.browser.genome)\n        } else if (\"tdf\" === format) {\n            this.featureSource = new TDFSource(config, this.browser.genome)\n        } else {\n            this.featureSource = FeatureSource(config, this.browser.genome)\n        }\n\n\n        // Override autoscale default\n        if(config.max === undefined || config.autoscale === true) {\n            this.autoscale = true\n        } else {\n            this.dataRange = {\n                min: config.min || 0,\n                max: config.max\n            }\n        }\n    }\n\n    async postInit() {\n        const header = await this.getHeader()\n        if (this.disposed) return   // This track was removed during async load\n        if (header) this.setTrackProperties(header)\n    }\n\n    async getFeatures(chr, start, end, bpPerPixel) {\n        const features = await this.featureSource.getFeatures({\n            chr,\n            start,\n            end,\n            bpPerPixel,\n            visibilityWindow: this.visibilityWindow,\n            windowFunction: this.windowFunction\n        })\n        if (this.normalize && this.featureSource.normalizationFactor) {\n            const scaleFactor = this.featureSource.normalizationFactor\n            for (let f of features) {\n                f.value *= scaleFactor\n            }\n        }\n        if (this.scaleFactor) {\n            const scaleFactor = this.scaleFactor\n            for (let f of features) {\n                f.value *= scaleFactor\n            }\n        }\n        return features\n    }\n\n    menuItemList() {\n        let items = []\n\n        if (this.flipAxis !== undefined) {\n            items.push('<hr>')\n            items.push({\n                label: \"Flip y-axis\",\n                click: () => {\n                    this.flipAxis = !this.flipAxis\n                    this.trackView.repaintViews()\n                }\n            })\n        }\n\n        items = items.concat(MenuUtils.numericDataMenuItems(this.trackView))\n\n        return items\n    }\n\n    async getHeader() {\n\n        if (typeof this.featureSource.getHeader === \"function\") {\n            this.header = await this.featureSource.getHeader()\n        }\n        return this.header\n    }\n\n    // TODO: refactor to igvUtils.js\n    getScaleFactor(min, max, height, logScale) {\n        const scale = logScale ? height / (Math.log10(max + 1) - (min <= 0 ? 0 : Math.log10(min + 1))) : height / (max - min)\n        return scale\n    }\n\n    computeYPixelValue(yValue, yScaleFactor) {\n        return (this.flipAxis ? (yValue - this.dataRange.min) : (this.dataRange.max - yValue)) * yScaleFactor\n    }\n\n    computeYPixelValueInLogScale(yValue, yScaleFactor) {\n        let maxValue = this.dataRange.max\n        let minValue = this.dataRange.min\n        if (maxValue <= 0) return 0 // TODO:\n        if (minValue <= -1) minValue = 0\n        minValue = (minValue <= 0) ? 0 : Math.log10(minValue + 1)\n        maxValue = Math.log10(maxValue + 1)\n        yValue = Math.log10(yValue + 1)\n        return ((this.flipAxis ? (yValue - minValue) : (maxValue - yValue)) * yScaleFactor)\n    }\n\n    draw(options) {\n\n        const features = options.features\n        const ctx = options.context\n        const bpPerPixel = options.bpPerPixel\n        const bpStart = options.bpStart\n        const pixelWidth = options.pixelWidth\n        const pixelHeight = options.pixelHeight\n        const bpEnd = bpStart + pixelWidth * bpPerPixel + 1\n        const posColor = this.color || DEFAULT_COLOR\n\n        let baselineColor\n        if (typeof posColor === \"string\" && posColor.startsWith(\"rgb(\")) {\n            baselineColor = IGVColor.addAlpha(posColor, 0.1)\n        }\n        let lastNegValue = 1\n        const scaleFactor = this.getScaleFactor(this.dataRange.min, this.dataRange.max, options.pixelHeight, this.logScale)\n        const yScale = (yValue) => this.logScale\n            ? this.computeYPixelValueInLogScale(yValue, scaleFactor)\n            : this.computeYPixelValue(yValue, scaleFactor)\n\n        if (features && features.length > 0) {\n\n            if (this.dataRange.min === undefined) this.dataRange.min = 0\n\n            // Max can be less than min if config.min is set but max left to autoscale.   If that's the case there is\n            // nothing to paint.\n            if (this.dataRange.max > this.dataRange.min) {\n\n                let lastPixelEnd = -1\n                let lastY\n                const y0 = yScale(0)\n                for (let f of features) {\n\n                    if (f.end < bpStart) continue\n                    if (f.start > bpEnd) break\n\n                    const x = Math.floor((f.start - bpStart) / bpPerPixel)\n                    if (isNaN(x)) continue\n\n                    let y = yScale(f.value)\n\n                    const rectEnd = Math.ceil((f.end - bpStart) / bpPerPixel)\n                    const width = Math.max(1, rectEnd - x)\n\n                    const color = this.getColorForFeature(f)\n\n                    if (this.graphType === \"points\") {\n                        const pointSize = this.config.pointSize || 3\n                        const px = x + width / 2\n                        IGVGraphics.fillCircle(ctx, px, y, pointSize / 2, {\"fillStyle\": color, \"strokeStyle\": color})\n\n                    } else if (this.graphType === \"line\") {\n                        if (lastY != undefined) {\n                            IGVGraphics.strokeLine(ctx, lastPixelEnd, lastY, x, y, {\n                                \"fillStyle\": color,\n                                \"strokeStyle\": color\n                            })\n                        }\n                        IGVGraphics.strokeLine(ctx, x, y, x + width, y, {\"fillStyle\": color, \"strokeStyle\": color})\n                    } else {\n                        const height = y - y0\n                        IGVGraphics.fillRect(ctx, x, y0, width, height, {fillStyle: color})\n\n                    }\n                    lastPixelEnd = x + width\n                    lastY = y\n                }\n\n                // If the track includes negative values draw a baseline\n                if (this.dataRange.min < 0) {\n                    const basepx = (this.dataRange.max / (this.dataRange.max - this.dataRange.min)) * options.pixelHeight\n                    IGVGraphics.strokeLine(ctx, 0, basepx, options.pixelWidth, basepx, {strokeStyle: baselineColor})\n                }\n            }\n        }\n\n        // Draw guidelines\n        if (this.config.hasOwnProperty('guideLines')) {\n            for (let line of this.config.guideLines) {\n                if (line.hasOwnProperty('color') && line.hasOwnProperty('y') && line.hasOwnProperty('dotted')) {\n                    let y = yScale(line.y)\n                    let props = {\n                        'strokeStyle': line['color'],\n                        'strokeWidth': 2\n                    }\n                    if (line['dotted']) IGVGraphics.dashedLine(options.context, 0, y, options.pixelWidth, y, 5, props)\n                    else IGVGraphics.strokeLine(options.context, 0, y, options.pixelWidth, y, props)\n                }\n            }\n        }\n    }\n\n    popupData(clickState, features) {\n\n        if (features === undefined) features = this.clickedFeatures(clickState)\n\n        if (features && features.length > 0) {\n\n            const genomicLocation = clickState.genomicLocation\n            const popupData = []\n\n            // Sort features based on distance from click\n            features.sort(function (a, b) {\n                const distA = Math.abs((a.start + a.end) / 2 - genomicLocation)\n                const distB = Math.abs((b.start + b.end) / 2 - genomicLocation)\n                return distA - distB\n            })\n\n            // Display closest 10\n            const displayFeatures = features.length > 10 ? features.slice(0, 10) : features\n\n            // Resort in ascending order\n            displayFeatures.sort(function (a, b) {\n                return a.start - b.start\n            })\n\n            for (let selectedFeature of displayFeatures) {\n                if (selectedFeature) {\n                    if (popupData.length > 0) {\n                        popupData.push('<hr/>')\n                    }\n                    let posString = (selectedFeature.end - selectedFeature.start) === 1 ?\n                        StringUtils.numberFormatter(selectedFeature.start + 1)\n                        : StringUtils.numberFormatter(selectedFeature.start + 1) + \"-\" + StringUtils.numberFormatter(selectedFeature.end)\n                    popupData.push({name: \"Position:\", value: posString})\n                    popupData.push({\n                        name: \"Value:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\",\n                        value: StringUtils.numberFormatter(selectedFeature.value)\n                    })\n                }\n            }\n            if (displayFeatures.length < features.length) {\n                popupData.push(\"<hr/>...\")\n            }\n\n            return popupData\n\n        } else {\n            return []\n        }\n    }\n\n    get supportsWholeGenome() {\n        return !this.config.indexURL && this.config.supportsWholeGenome !== false\n    }\n\n    /**\n     * Return color for feature.\n     * @param feature\n     * @returns {string}\n     */\n\n    getColorForFeature(f) {\n        let c = (f.value < 0 && this.altColor) ? this.altColor : this.color || DEFAULT_COLOR\n        return (typeof c === \"function\") ? c(f.value) : c\n    }\n\n    /**\n     * Called when the track is removed.  Do any needed cleanup here\n     */\n    dispose() {\n        this.trackView = undefined\n    }\n\n}\n\n\nexport default WigTrack\n","/**\n *\n * @param cs - object containing\n * 1) array of threshold values defining bin boundaries in ascending order\n * 2) array of colors for bins  (length == thresholds.length + 1)\n * @constructor\n */\nfunction BinnedColorScale(cs) {\n    this.thresholds = cs.thresholds\n    this.colors = cs.colors\n}\n\nBinnedColorScale.prototype.getColor = function (value) {\n\n    for (let threshold of this.thresholds) {\n        if (value < threshold) {\n            return this.colors[this.thresholds.indexOf(threshold)]\n        }\n    }\n\n    return this.colors[this.colors.length - 1]\n\n}\n\n/**\n *\n * @param scale - object with the following properties\n *           low\n *           lowR\n *           lowG\n *           lowB\n *           high\n *           highR\n *           highG\n *           highB\n *\n * @constructor\n */\nfunction GradientColorScale(scale) {\n\n    this.scale = scale\n    this.lowColor = \"rgb(\" + scale.lowR + \",\" + scale.lowG + \",\" + scale.lowB + \")\"\n    this.highColor = \"rgb(\" + scale.highR + \",\" + scale.highG + \",\" + scale.highB + \")\"\n    this.diff = scale.high - scale.low\n\n}\n\nGradientColorScale.prototype.getColor = function (value) {\n\n    var scale = this.scale, r, g, b, frac\n\n    if (value <= scale.low) return this.lowColor\n    else if (value >= scale.high) return this.highColor\n\n    frac = (value - scale.low) / this.diff\n    r = Math.floor(scale.lowR + frac * (scale.highR - scale.lowR))\n    g = Math.floor(scale.lowG + frac * (scale.highG - scale.lowG))\n    b = Math.floor(scale.lowB + frac * (scale.highB - scale.lowB))\n\n    return \"rgb(\" + r + \",\" + g + \",\" + b + \")\"\n}\n\nclass ConstantColorScale {\n    constructor(color) {\n        this.color = color\n    }\n\n    getColor() {\n        return this.color\n    }\n}\n\n\nexport {BinnedColorScale, GradientColorScale, ConstantColorScale}\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport FeatureSource from './featureSource.js'\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport {IGVMath} from \"../../node_modules/igv-utils/src/index.js\"\nimport {createCheckbox} from \"../igv-icons.js\"\nimport {GradientColorScale} from \"../util/colorScale.js\"\nimport {ColorTable} from \"../util/colorPalletes.js\"\n\nclass SegTrack extends TrackBase {\n\n    constructor(config, browser) {\n        super(config, browser)\n    }\n\n    init(config) {\n        super.init(config)\n\n        this.type = config.type || \"seg\"\n        if (this.type === 'maf') this.type = 'mut'\n        this.isLog = config.isLog\n        this.displayMode = config.displayMode || \"EXPANDED\" // EXPANDED | SQUISHED\n        this.height = config.height || 300\n        this.maxHeight = config.maxHeight || 500\n        this.squishedRowHeight = config.sampleSquishHeight || config.squishedRowHeight || 2\n        this.expandedRowHeight = config.sampleExpandHeight || config.expandedRowHeight || 13\n        this.sampleHeight = this.squishedRowHeight      // Initial value, will get overwritten when rendered\n\n        if (config.color) {\n            this.color = config.color\n        } else {\n            // Color scales for \"seg\" (copy number) tracks.\n            this.posColorScale = config.posColorScale ||\n                new GradientColorScale({\n                    low: 0.1,\n                    lowR: 255,\n                    lowG: 255,\n                    lowB: 255,\n                    high: 1.5,\n                    highR: 255,\n                    highG: 0,\n                    highB: 0\n                })\n            this.negColorScale = config.negColorScale ||\n                new GradientColorScale({\n                    low: -1.5,\n                    lowR: 0,\n                    lowG: 0,\n                    lowB: 255,\n                    high: -0.1,\n                    highR: 255,\n                    highG: 255,\n                    highB: 255\n                })\n\n            // Default color table for mutation (mut and maf) tracks\n            if (this.type === \"mut\") {\n                this.colorTable = new ColorTable(config.colorTable || MUT_COLORS)\n            }\n        }\n\n        this.sampleKeys = []\n        this.sampleNames = new Map()\n        if (config.samples) {\n            // Explicit setting, keys == names\n            for (let s of config.samples) {\n                this.sampleKeys.push(s)\n                this.sampleNames.set(s, s)\n            }\n            this.explicitSamples = true\n        }\n\n        //   this.featureSource = config.sourceType === \"bigquery\" ?\n        //       new igv.BigQueryFeatureSource(this.config) :\n\n        // Disable whole genome downsampling unless explicitly.\n        const configCopy = Object.assign({}, this.config);\n        configCopy.maxWGCount = configCopy.maxWGCount || Number.MAX_SAFE_INTEGER;\n        this.featureSource = FeatureSource(configCopy, this.browser.genome)\n\n        this.initialSort = config.sort\n    }\n\n    async postInit() {\n        if (typeof this.featureSource.getHeader === \"function\") {\n            this.header = await this.featureSource.getHeader()\n            if(this.disposed) return;   // This track was removed during async load\n        }\n        // Set properties from track line\n        if (this.header) {\n            this.setTrackProperties(this.header)\n        }\n    }\n\n\n    menuItemList() {\n\n        const menuItems = []\n        const lut =\n            {\n                \"SQUISHED\": \"Squish\",\n                \"EXPANDED\": \"Expand\",\n                \"FILL\": \"Fill\"\n            }\n\n        menuItems.push('<hr/>')\n        menuItems.push(\"DisplayMode:\")\n\n        const displayOptions = this.type === 'seg' ? [\"SQUISHED\", \"EXPANDED\", \"FILL\"] : [\"SQUISHED\", \"EXPANDED\"]\n\n        for (let displayMode of displayOptions) {\n\n            const checkBox = createCheckbox(lut[displayMode], displayMode === this.displayMode)\n            menuItems.push(\n                {\n                    object: $(checkBox),\n                    click: () => {\n                        this.displayMode = displayMode\n                        this.config.displayMode = displayMode\n                        this.trackView.checkContentHeight()\n                        this.trackView.repaintViews()\n                        this.trackView.moveScroller(this.trackView.sampleNameViewport.trackScrollDelta)\n                    }\n                })\n        }\n\n        return menuItems\n\n    }\n\n    hasSamples() {\n        return true   // SEG, MUT, and MAF tracks have samples by definition\n    }\n\n    getSamples() {\n        return {\n            names: this.sampleKeys.map(key => this.sampleNames.get(key)),\n            height: this.sampleHeight,\n            yOffset: 0\n        }\n    }\n\n    async getFeatures(chr, start, end) {\n        const features = await this.featureSource.getFeatures({chr, start, end})\n        if (this.initialSort) {\n            const sort = this.initialSort\n            this.sortSamples(sort.chr, sort.start, sort.end, sort.direction, features)\n            this.initialSort = undefined  // Sample order is sorted,\n        }\n        return features\n    }\n\n\n    draw({context, renderSVG, pixelTop, pixelWidth, pixelHeight, features, bpPerPixel, bpStart}) {\n\n        IGVGraphics.fillRect(context, 0, pixelTop, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n\n        if (features && features.length > 0) {\n\n            this.checkForLog(features)\n\n            // New segments could conceivably add new samples\n            this.updateSampleKeys(features)\n\n            // Create a map for fast id -> row lookup\n            const samples = {}\n            this.sampleKeys.forEach(function (id, index) {\n                samples[id] = index\n            })\n\n            let border\n            switch (this.displayMode) {\n                case \"FILL\":\n                    this.sampleHeight = pixelHeight / this.sampleKeys.length\n                    border = 0\n                    break\n\n                case \"SQUISHED\":\n                    this.sampleHeight = this.squishedRowHeight\n                    border = 0\n                    break\n                default:   // EXPANDED\n                    this.sampleHeight = this.expandedRowHeight\n                    border = 1\n            }\n            const rowHeight = this.sampleHeight\n\n\n            // this.featureMap = new Map()\n\n            for (let segment of features) {\n                segment.pixelRect = undefined   // !important, reset this in case segment is not drawn\n            }\n\n            const pixelBottom = pixelTop + pixelHeight\n            const bpEnd = bpStart + pixelWidth * bpPerPixel + 1\n            const xScale = bpPerPixel\n\n            this.sampleYStart = undefined\n            for (let f of features) {\n\n                if (f.end < bpStart) continue\n                if (f.start > bpEnd) break\n\n                const sampleKey = f.sampleKey || f.sample\n                f.row = samples[sampleKey]\n                const y = f.row * rowHeight + border\n\n                if (undefined === this.sampleYStart) {\n                    this.sampleYStart = y\n                }\n\n                const bottom = y + rowHeight\n\n                if (bottom < pixelTop || y > pixelBottom) {\n                    continue\n                }\n\n                const segmentStart = Math.max(f.start, bpStart)\n                // const segmentStart = segment.start;\n                let x = Math.round((segmentStart - bpStart) / xScale)\n\n                const segmentEnd = Math.min(f.end, bpEnd)\n                // const segmentEnd = segment.end;\n                const x1 = Math.round((segmentEnd - bpStart) / xScale)\n                let w = Math.max(1, x1 - x)\n\n                let color\n                if (this.color) {\n                    if (typeof this.color === \"function\") {\n                        color = this.color(f)\n                    } else {\n                        color = this.color\n                    }\n                } else if (this.colorTable) {\n                    color = this.colorTable.getColor(f.value.toLowerCase())\n                }\n\n                let h\n                if (\"mut\" === this.type) {\n                    h = rowHeight - 2 * border\n                    if (w < 3) {\n                        w = 3\n                        x -= 1\n                    }\n                } else {\n                    // Assume seg track\n                    let value = f.value\n                    if (!this.isLog) {\n                        value = IGVMath.log2(value / 2)\n                    }\n                    if (value < -0.1) {\n                        color = this.negColorScale.getColor(value)\n                    } else if (value > 0.1) {\n                        color = this.posColorScale.getColor(value)\n                    } else {\n                        color = \"white\"\n                    }\n\n                    let sh = rowHeight\n                    if (rowHeight < 0.25) {\n                        const f = 0.1 + 2 * Math.abs(value)\n                        sh = Math.min(1, f * rowHeight)\n                    }\n                    h = sh - 2 * border\n                }\n\n\n                f.pixelRect = {x, y, w, h}\n\n                // Use for diagnostic rendering\n                // context.fillStyle = randomRGB(180, 240)\n                // context.fillStyle = randomGrey(200, 255)\n                context.fillStyle = color\n                context.fillRect(x, y, w, h)\n            }\n\n        } else {\n            //console.log(\"No feature list\");\n        }\n\n    }\n\n\n    checkForLog(features) {\n        if (this.isLog === undefined) {\n            this.isLog = false\n            for (let feature of features) {\n                if (feature.value < 0) {\n                    this.isLog = true\n                    return\n                }\n            }\n        }\n    }\n\n    /**\n     * Optional method to compute pixel height to accomodate the list of features.  The implementation below\n     * has side effects (modifiying the samples hash).  This is unfortunate, but harmless.\n     *\n     * Note displayMode \"FILL\" is handled by the viewport\n     *\n     * @param features\n     * @returns {number}\n     */\n    computePixelHeight(features) {\n        if (!features) return 0\n        const sampleHeight = (\"SQUISHED\" === this.displayMode) ? this.squishedRowHeight : this.expandedRowHeight\n        this.updateSampleKeys(features)\n        return this.sampleKeys.length * sampleHeight\n    }\n\n    /**\n     * Sort samples by the average value over the genomic range in the direction indicated (1 = ascending, -1 descending)\n     */\n    async sortSamples(chr, start, end, direction, featureList) {\n\n        if (!featureList) {\n            featureList = await this.featureSource.getFeatures({chr, start, end})\n        }\n        if (!featureList) return\n\n        this.updateSampleKeys(featureList)\n\n        const scores = {}\n        const d2 = (direction === \"ASC\" ? 1 : -1)\n\n        const sortSeg = () => {\n            // Compute weighted average score for each sample\n            const bpLength = end - start + 1\n            for (let segment of featureList) {\n                if (segment.end < start) continue\n                if (segment.start > end) break\n                const min = Math.max(start, segment.start)\n                const max = Math.min(end, segment.end)\n                const f = (max - min) / bpLength\n                const sampleKey = segment.sampleKey || segment.sample\n                const s = scores[sampleKey] || 0\n                scores[sampleKey] = s + f * segment.value\n            }\n\n            // Now sort sample names by score\n            this.sampleKeys.sort(function (a, b) {\n                let s1 = scores[a]\n                let s2 = scores[b]\n                if (!s1) s1 = d2 * Number.MAX_VALUE\n                if (!s2) s2 = d2 * Number.MAX_VALUE\n                if (s1 === s2) return 0\n                else if (s1 > s2) return d2\n                else return d2 * -1\n            })\n        }\n\n        const sortMut = () => {\n            // Compute weighted average score for each sample\n            for (let segment of featureList) {\n                if (segment.end < start) continue\n                if (segment.start > end) break\n                const sampleKey = segment.sampleKey || segment.sample\n                if (!scores.hasOwnProperty(sampleKey) || segment.value.localeCompare(scores[sampleKey]) > 0) {\n                    scores[sampleKey] = segment.value\n                }\n            }\n            // Now sort sample names by score\n            this.sampleKeys.sort(function (a, b) {\n                let sa = scores[a] || \"\"\n                let sb = scores[b] || \"\"\n                return d2 * (sa.localeCompare(sb))\n            })\n        }\n\n        if (\"mut\" === this.type) {\n            sortMut()\n        } else {\n            sortSeg()\n        }\n\n        this.trackView.repaintViews()\n\n    }\n\n    clickedFeatures(clickState) {\n\n        const allFeatures = super.clickedFeatures(clickState)\n        const y = clickState.y\n        return allFeatures.filter(function (feature) {\n            const rect = feature.pixelRect\n            return rect && y >= rect.y && y <= (rect.y + rect.h)\n        })\n\n    }\n\n    hoverText(clickState) {\n        const features = this.clickedFeatures(clickState)\n        if(features && features.length > 0) {\n            return `${features[0].sample}: ${features[0].value}`\n        }\n    }\n\n    popupData(clickState, featureList) {\n\n        if(featureList === undefined) featureList = this.clickedFeatures(clickState)\n\n        const items = []\n\n        for (let feature of featureList) {\n\n            // Double line divider between features\n            if (items.length > 0) {\n                items.push('<hr/>')\n                items.push('<hr/>')\n            }\n\n            // hack for whole genome features, which save the original feature as \"_f\"\n            const f = feature._f || feature\n\n            const data = (typeof f.popupData === 'function') ?\n                f.popupData(this.type, this.browser.genome.id) :\n                this.extractPopupData(f)\n            Array.prototype.push.apply(items, data)\n\n        }\n\n        return items\n    }\n\n    contextMenuItemList(clickState) {\n\n        const referenceFrame = clickState.viewport.referenceFrame\n        const genomicLocation = clickState.genomicLocation\n\n        // Define a region 5 \"pixels\" wide in genomic coordinates\n        const sortDirection = this.config.sort ?\n            (this.config.sort.direction === \"ASC\" ? \"DESC\" : \"ASC\") :      // Toggle from previous sort\n            \"DESC\"\n        const bpWidth = referenceFrame.toBP(2.5)\n\n        const sortHandler = (sort) => {\n            const viewport = clickState.viewport\n            const features = viewport.cachedFeatures\n            this.sortSamples(sort.chr, sort.start, sort.end, sort.direction, features)\n        }\n\n        const sortLabel = this.type === 'seg' ? 'Sort by value' : 'Sort by type'\n\n        return [\n            {\n                label: sortLabel, click: (e) => {\n\n\n                    const sort = {\n                        direction: sortDirection,\n                        chr: clickState.viewport.referenceFrame.chr,\n                        start: genomicLocation - bpWidth,\n                        end: genomicLocation + bpWidth\n\n                    }\n\n                    sortHandler(sort)\n\n                    this.config.sort = sort\n\n                }\n            }]\n\n    }\n\n    get supportsWholeGenome() {\n        return (this.config.indexed === false || !this.config.indexURL) && this.config.supportsWholeGenome !== false\n    }\n\n    updateSampleKeys(featureList) {\n\n        if (this.explicitSamples) return\n\n        for (let feature of featureList) {\n            const sampleKey = feature.sampleKey || feature.sample\n            if (!this.sampleNames.has(sampleKey)) {\n                this.sampleNames.set(sampleKey, feature.sample)\n                this.sampleKeys.push(sampleKey)\n            }\n        }\n    }\n}\n\n// Mut and MAF file default color table\n\nconst MUT_COLORS = {\n\n    \"indel\": \"rgb(0,200,0)\",\n    \"targeted region\": \"rgb(236,155,43)\",\n    \"truncating\": \"rgb(\t150,0,0)\",\n    \"non-coding transcript\": \"rgb(0,0,150)\",\n\n    // Colors from https://www.nature.com/articles/nature11404\n    \"synonymous\": \"rgb(109,165,95)\",\n    \"silent\": \"rgb(109,135,80)\",\n    \"missense_mutation\": \"rgb(72,130,187)\",\n    \"missense\": \"rgb(72,130,187)\",\n    \"splice site\": \"rgb(143,83,155)\",\n    \"splice_region\": \"rgb(143,83,155)\",\n    \"nonsense\": \"rgb(216, 57,81)\",\n    \"nonsense_mutation\": \"rgb(216, 57,81)\",\n    \"frame_shift_del\": \"rgb(226,135,65)\",\n    \"frame_shift_ins\": \"rgb(226,135,65)\",\n    \"in_frame_del\": \"rgb(247,235,94)\",\n    \"in_frame_ins\": \"rgb(247,235,94)\",\n    \"*other*\": \"rgb(159,91,50)\"\n    //\n    // 3'Flank\n    // 3'UTR\n    // 5'Flank\n    // 5'UTR\n    // Frame_Shift_Del\n    // Frame_Shift_Ins\n    // IGR\n    // In_Frame_Del\n    // In_Frame_Ins\n    // Intron\n    // Missense_Mutation\n    // Nonsense_Mutation\n    // Nonstop_Mutation\n    // RNA\n    // Silent\n    // Splice_Region\n    // Splice_Site\n    // Translation_Start_Site\n    // Variant_Classification\n\n}\n\nexport default SegTrack\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport TrackBase from \"../trackBase.js\"\nimport paintAxis from \"../util/paintAxis.js\"\nimport MenuUtils from \"../ui/menuUtils.js\"\nimport {FeatureUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\n\n/**\n * Represents 2 or more wig tracks overlaid on a common viewport.\n */\nclass MergedTrack extends TrackBase {\n\n    constructor(config, browser) {\n        super(config, browser)\n        this.type = \"merged\"\n        this.featureType = 'numeric'\n        this.paintAxis = paintAxis\n        this.graphType = config.graphType\n    }\n\n    init(config) {\n        if (!config.tracks) {\n            throw Error(\"Error: no tracks defined for merged track\" + config)\n        }\n\n        super.init(config)\n    }\n\n    async postInit() {\n\n        this.tracks = []\n        const p = []\n        for (let tconf of this.config.tracks) {\n            tconf.isMergedTrack = true\n            const t = await this.browser.createTrack(tconf)\n            if (t) {\n                t.autoscale = false     // Scaling done from merged track\n                this.tracks.push(t)\n            } else {\n                console.warn(\"Could not create track \" + tconf)\n            }\n\n            if (typeof t.postInit === 'function') {\n                p.push(t.postInit())\n            }\n        }\n\n        this.flipAxis = this.config.flipAxis ? this.config.flipAxis : false\n        this.logScale = this.config.logScale ? this.config.logScale : false\n        this.autoscale = this.config.autoscale || this.config.max === undefined\n        if (!this.autoscale) {\n            this.dataRange = {\n                min: this.config.min || 0,\n                max: this.config.max\n            }\n        }\n        for (let t of this.tracks) {\n            t.autoscale = false\n            t.dataRange = this.dataRange\n        }\n\n        this.height = this.config.height || 50\n\n        return Promise.all(p)\n    }\n\n    get height() {\n        return this._height\n    }\n\n    set height(h) {\n        this._height = h\n        if (this.tracks) {\n            for (let t of this.tracks) {\n                t.height = h\n                t.config.height = h\n            }\n        }\n    }\n\n    menuItemList() {\n        let items = []\n        if (this.flipAxis !== undefined) {\n            items.push({\n                label: \"Flip y-axis\",\n                click: () => {\n                    this.flipAxis = !this.flipAxis\n                    this.trackView.repaintViews()\n                }\n            })\n        }\n\n        items = items.concat(MenuUtils.numericDataMenuItems(this.trackView))\n\n        return items\n    }\n\n    /**\n     * Returns a MergedFeatureCollection containing an array of features for the specified range, 1 for each track.\n     */\n    async getFeatures(chr, bpStart, bpEnd, bpPerPixel) {\n\n        const promises = this.tracks.map((t) => t.getFeatures(chr, bpStart, bpEnd, bpPerPixel))\n        const featureArrays = await Promise.all(promises)\n        return new MergedFeatureCollection(featureArrays)\n    }\n\n    draw(options) {\n\n        const mergedFeatures = options.features    // A MergedFeatureCollection\n\n        for (let i = 0, len = this.tracks.length; i < len; i++) {\n            const trackOptions = Object.assign({}, options)\n            trackOptions.features = mergedFeatures.featureArrays[i]\n            this.tracks[i].dataRange = this.dataRange\n            this.tracks[i].flipAxis = this.flipAxis\n            this.tracks[i].logScale = this.logScale\n            if (this.graphType) {\n                this.tracks[i].graphType = this.graphType\n            }\n            this.tracks[i].draw(trackOptions)\n        }\n    }\n\n    popupData(clickState) {\n\n        if(clickState.viewport && clickState.viewport.cachedFeatures) {\n\n            const featuresArray = clickState.viewport.cachedFeatures.featureArrays\n\n            if (featuresArray && featuresArray.length === this.tracks.length) {\n                // Array of feature arrays, 1 for each track\n                const popupData = []\n                for (let i = 0; i < this.tracks.length; i++) {\n                    if (i > 0) popupData.push('<hr/>')\n                    popupData.push(`<div style=background-color:rgb(245,245,245);border-bottom-style:dashed;border-bottom-width:1px;padding-bottom:5px;padding-top:10px;font-weight:bold;font-size:larger >${this.tracks[i].name}</div>`)\n                    const trackPopupData = this.tracks[i].popupData(clickState, featuresArray[i])\n                    popupData.push(...trackPopupData)\n\n                }\n                return popupData\n            }\n        }\n    }\n\n    clickedFeatures(clickState) {\n\n\n        // We use the cached features rather than method to avoid async load.  If the\n        // feature is not already loaded this won't work,  but the user wouldn't be mousing over it either.\n        const mergedFeaturesCollection = clickState.viewport.cachedFeatures\n\n        if(!mergedFeaturesCollection) {\n            return [];\n        }\n\n        const genomicLocation = clickState.genomicLocation\n        const clickedFeatures = [];\n        for(let features of mergedFeaturesCollection.featureArrays) {\n            // When zoomed out we need some tolerance around genomicLocation\n            const tolerance = (clickState.referenceFrame.bpPerPixel > 0.2) ? 3 * clickState.referenceFrame.bpPerPixel : 0.2\n            const ss = genomicLocation - tolerance\n            const ee = genomicLocation + tolerance\n            const tmp = (FeatureUtils.findOverlapping(features, ss, ee))\n            for(let f of tmp) {\n                clickedFeatures.push(f)\n            }\n        }\n        return clickedFeatures;\n    }\n\n\n    get supportsWholeGenome() {\n        return this.tracks.every(track => track.supportsWholeGenome)\n    }\n}\n\n\nclass MergedFeatureCollection {\n\n    constructor(featureArrays) {\n        this.featureArrays = featureArrays\n    }\n\n    getMax(start, end) {\n        let max = -Number.MAX_VALUE\n        for (let a of this.featureArrays) {\n            for (let f of a) {\n                if (typeof f.value !== 'undefined' && !Number.isNaN(f.value)) {\n                    if (f.end < start) {\n                        continue\n                    }\n                    if (f.start > end) {\n                        break\n                    }\n                    max = Math.max(max, f.value)\n                }\n            }\n        }\n        return max\n    }\n\n}\n\nexport default MergedTrack\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2018 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport paintAxis from \"../util/paintAxis.js\"\nimport {IGVColor, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport MenuUtils from \"../ui/menuUtils.js\"\nimport {createCheckbox} from \"../igv-icons.js\"\nimport {scoreShade} from \"../util/ucscUtils.js\"\nimport FeatureSource from \"./featureSource.js\"\nimport {makeBedPEChords, sendChords} from \"../jbrowse/circularViewUtils.js\"\nimport {getChrColor} from \"../bam/bamTrack.js\"\n\nfunction getArcType(config) {\n    if (!config.arcType) {\n        return \"nested\"\n    }\n    switch (config.arcType) {\n        case \"chiapet\":\n            return \"inView\"\n        case \"chiapetoutbound\":\n            return \"partialInView\"\n        default:\n            return config.arcType\n    }\n}\n\nconst DEFAULT_ARC_COLOR = \"rgb(180,25,137)\"\n\nclass InteractionTrack extends TrackBase {\n\n    static defaults = {\n        height: 250,\n        theta: Math.PI / 4,\n        arcOrientation: true,\n        showBlocks: true,\n        blockHeight: 3,\n        thickness: 1,\n        alpha: 0.02,\n        logScale: true,\n    }\n\n    constructor(config, browser) {\n        super(config, browser)\n    }\n\n    init(config) {\n\n        super.init(config)\n\n        this.sinTheta = Math.sin(this.theta)\n        this.cosTheta = Math.cos(this.theta)\n        this.arcType = getArcType(config)   // nested | proportional | inView | partialInView\n        this.alpha = config.alpha || 0.02  // was: 0.15\n        this.painter = {flipAxis: !this.arcOrientation, dataRange: this.dataRange, paintAxis: paintAxis}\n\n        if (config.valueColumn) {\n            this.valueColumn = config.valueColumn\n            this.hasValue = true\n        } else if (config.useScore) {\n            this.hasValue = true\n            this.valueColumn = \"score\"\n        }\n\n        if (config.max) {\n            this.dataRange = {\n                min: config.min || 0,\n                max: config.max\n            }\n            this.autoscale = false\n        } else {\n            this.autoscale = true\n        }\n\n        // Create the FeatureSource and override the default whole genome method\n        if (config.featureSource) {\n            this.featureSource = config.featureSource\n            delete config._featureSource\n        } else {\n            this.featureSource = FeatureSource(config, this.browser.genome)\n            this.featureSource.getWGFeatures = getWGFeatures\n        }\n    }\n\n    async postInit() {\n\n        if (typeof this.featureSource.getHeader === \"function\") {\n            this.header = await this.featureSource.getHeader()\n            if (this.disposed) return;   // This track was removed during async load\n        }\n\n        // Set properties from track line\n        if (this.header) {\n            this.setTrackProperties(this.header)\n        }\n\n        if (this.visibilityWindow === undefined && typeof this.featureSource.defaultVisibilityWindow === 'function') {\n            this.visibilityWindow = await this.featureSource.defaultVisibilityWindow()\n            this.featureSource.visibilityWindow = this.visibilityWindow  // <- this looks odd\n        }\n\n        return this\n    }\n\n    get supportsWholeGenome() {\n        return true\n    }\n\n    async getFeatures(chr, start, end) {\n        const visibilityWindow = this.visibilityWindow\n        const features = await this.featureSource.getFeatures({chr, start, end, visibilityWindow})\n\n        // Check for score or value\n        if (this.hasValue === undefined && features && features.length > 0) {\n            this.hasValue = features[0].score !== undefined\n        }\n\n        return features\n    }\n\n    draw(options) {\n\n        if (this.arcType === \"proportional\") {\n            this.drawProportional(options)\n        } else if (this.arcType === \"inView\" || this.arcType === \"partialInView\") {\n            this.drawProportional(options)\n        } else {\n            this.drawNested(options)\n        }\n    }\n\n    drawNested(options) {\n\n        const ctx = options.context\n        const pixelWidth = options.pixelWidth\n        const pixelHeight = options.pixelHeight\n        const viewportWidth = options.viewportWidth\n        const bpPerPixel = options.bpPerPixel\n        const bpStart = options.bpStart\n        const xScale = bpPerPixel\n\n        IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n\n        const featureList = options.features\n\n        if (featureList) {\n\n            // Autoscale theta\n            autoscaleNested.call(this)\n            const y = this.arcOrientation ? options.pixelHeight : 0\n            const direction = this.arcOrientation\n\n            ctx.font = \"8px sans-serif\"\n            ctx.textAlign = \"center\"\n\n            for (let feature of featureList) {\n\n                // Reset transient property drawState.  An undefined value => feature has not been drawn.\n                feature.drawState = undefined\n\n                let color\n                if (typeof this.color === 'function') {\n                    color = this.color(feature)\n                } else {\n                    color = this.color || feature.color || DEFAULT_ARC_COLOR\n                    if (color && this.config.useScore) {\n                        color = getAlphaColor(color, scoreShade(feature.score))\n                    }\n                }\n\n                ctx.lineWidth = feature.thickness || this.thickness || 1\n\n                if (feature.chr1 === feature.chr2 || feature.chr === 'all') {\n\n                    const {m1, m2} = getMidpoints(feature, this.browser.genome)\n\n                    let pixelStart = Math.round((m1 - bpStart) / xScale)\n                    let pixelEnd = Math.round((m2 - bpStart) / xScale)\n                    if (pixelEnd < 0 || pixelStart > pixelWidth) continue\n\n                    let w = (pixelEnd - pixelStart)\n                    if (w < 3) {\n                        w = 3\n                        pixelStart--\n                    }\n\n                    const a = w / 2\n                    const r = a / this.sinTheta\n                    const b = this.cosTheta * r\n                    const xc = pixelStart + a\n\n                    let yc, startAngle, endAngle\n                    if (direction) { // UP\n                        yc = this.height + b\n                        startAngle = Math.PI + Math.PI / 2 - this.theta\n                        endAngle = Math.PI + Math.PI / 2 + this.theta\n                    } else { // DOWN\n                        yc = -b\n                        startAngle = Math.PI / 2 - this.theta\n                        endAngle = Math.PI / 2 + this.theta\n                    }\n\n                    if (this.showBlocks && feature.chr !== 'all') {\n                        const s1 = (feature.start1 - bpStart) / xScale\n                        const e1 = (feature.end1 - bpStart) / xScale\n                        const s2 = (feature.start2 - bpStart) / xScale\n                        const e2 = (feature.end2 - bpStart) / xScale\n                        const hb = this.arcOrientation ? -this.blockHeight : this.blockHeight\n                        ctx.fillRect(s1, y, e1 - s1, hb)\n                        ctx.fillRect(s2, y, e2 - s2, hb)\n                    }\n\n                    // Alpha shade (de-emphasize) arcs that extend beyond viewport, unless alpha shading is used for score.\n                    if (color && !this.config.useScore && w > viewportWidth) {\n                        color = getAlphaColor(color, this.alpha)\n                    }\n                    ctx.strokeStyle = color\n                    ctx.fillStyle = color\n                    ctx.beginPath()\n                    ctx.arc(xc, yc, r, startAngle, endAngle, false)\n                    ctx.stroke()\n                    feature.drawState = {xc, yc, r}\n                } else {\n\n                    let pixelStart = Math.round((feature.start - bpStart) / xScale)\n                    let pixelEnd = Math.round((feature.end - bpStart) / xScale)\n                    if (pixelEnd < 0 || pixelStart > pixelWidth) continue\n\n                    let w = (pixelEnd - pixelStart)\n                    if (w < 3) {\n                        w = 3\n                        pixelStart--\n                    }\n                    const otherChr = feature.chr === feature.chr1 ? feature.chr2 : feature.chr1\n                    ctx.strokeStyle = color\n                    // get a sense of trans \"spread\"\n                    ctx.fillStyle = getAlphaColor(getChrColor(otherChr), 0.5)\n                    // ctx.fillStyle = color\n\n                    if (direction) {\n                        // UP\n                        ctx.fillRect(pixelStart, this.height / 2, w, this.height / 2)\n                        ctx.fillText(otherChr, pixelStart + w / 2, this.height / 2 - 5)\n                        feature.drawState = {x: pixelStart, y: this.height / 2, w: w, h: this.height / 2}\n                    } else {\n                        ctx.fillRect(pixelStart, 0, w, this.height / 2)\n                        ctx.fillText(otherChr, pixelStart + w / 2, this.height / 2 + 13)\n                        feature.drawState = {x: pixelStart, y: 0, w: w, h: this.height / 2}\n                    }\n                }\n            }\n        }\n\n        function autoscaleNested() {\n            let max = 0\n            for (let feature of featureList) {\n                let pixelStart = (feature.start - bpStart) / xScale\n                let pixelEnd = (feature.end - bpStart) / xScale\n                if (pixelStart >= 0 && pixelEnd <= pixelWidth) {\n                    max = Math.max(max, pixelEnd - pixelStart)\n                }\n            }\n            let a = Math.min(viewportWidth, max) / 2\n            if (max > 0) {\n                let coa = (pixelHeight - 10) / a\n                this.theta = estimateTheta(coa)\n                this.sinTheta = Math.sin(this.theta)\n                this.cosTheta = Math.cos(this.theta)\n            }\n        }\n    }\n\n    getScaleFactor(min, max, height, logScale) {\n        const scale = logScale ? height / (Math.log10(max + 1) - (min <= 0 ? 0 : Math.log10(min + 1))) : height / (max - min)\n        return scale\n    }\n\n    drawProportional(options) {\n\n        const ctx = options.context\n        const pixelWidth = options.pixelWidth\n        const pixelHeight = options.pixelHeight\n        const bpPerPixel = options.bpPerPixel\n        const bpStart = options.bpStart\n        const xScale = bpPerPixel\n        const refStart = options.referenceFrame.start\n        const refEnd = options.referenceFrame.end\n\n\n        IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n\n        const featureList = options.features\n\n        if (featureList && featureList.length > 0) {\n\n            const arcCaches = new Map() // FIXME: to stop drawing 'visually identical' arcs; more efficient algo exists\n\n            // we use the min as a filter but not moving the axis\n            const effectiveMin = 0\n            const yScale = this.getScaleFactor(effectiveMin, this.dataRange.max, options.pixelHeight - 1, this.logScale)\n            const y = this.arcOrientation ? options.pixelHeight : 0\n\n            for (let feature of featureList) {\n\n                // Reset transient property drawState.  An undefined value => feature has not been drawn.\n                feature.drawState = undefined\n\n                const value = this.valueColumn ? feature[this.valueColumn] : feature.score\n                if (value === undefined || Number.isNaN(value)) continue\n\n                const radiusY = Math.round((this.logScale ? Math.log10(value + 1) : value) * yScale)\n\n                if (feature.chr1 === feature.chr2 || feature.chr === 'all') {\n\n                    const {m1, m2} = getMidpoints(feature, this.browser.genome)\n\n                    let pixelStart = Math.round((m1 - bpStart) / xScale)\n                    let pixelEnd = Math.round((m2 - bpStart) / xScale)\n                    let w = (pixelEnd - pixelStart)\n                    if (w < 3) {\n                        w = 3\n                        pixelStart--\n                    }\n\n                    // Various filters\n                    if (value < this.dataRange.min || value > this.dataRange.max) continue\n                    if (\"proportional\" !== this.arcType) {\n                        const showOutbound = (this.arcType === \"partialInView\")\n                        const within = (m1 >= refStart && m2 <= refEnd)\n                        let outBound = false\n                        let inBound = false\n                        if (!within && showOutbound) {\n                            outBound = (refStart <= m1 && m1 <= refEnd)\n                            if (!outBound) inBound = (refStart <= m2 && m2 <= refEnd)\n                        }\n                        if (!(within || outBound || inBound)) continue\n                    }\n\n\n                    const radiusX = w / 2\n                    const xc = pixelStart + w / 2\n                    feature.drawState = {xc, yc: y, radiusX, radiusY}\n\n                    // const arcKey = ((pixelStart << 16) | pixelEnd)\n                    // let arc = arcCaches.get(arcKey)\n                    // if (arc !== undefined) {\n                    //     if (arc.has(radiusY)) {\n                    //         continue\n                    //     }\n                    //     arc.add(radiusY)\n                    // } else {\n                    //     let arcHeights = new Set()\n                    //     arcHeights.add(radiusY)\n                    //     arcCaches.set(arcKey, arcHeights)\n                    // }\n\n                    const counterClockwise = this.arcOrientation ? true : false\n                    const color = feature.color || this.color\n                    ctx.strokeStyle = color\n                    ctx.lineWidth = feature.thickness || this.thickness || 1\n\n                    if (true === ctx.isSVG) {\n                        ctx.strokeEllipse(xc, y, radiusX, radiusY, 0, 0, Math.PI, counterClockwise)\n                    } else {\n                        ctx.beginPath()\n                        ctx.ellipse(xc, y, radiusX, radiusY, 0, 0, Math.PI, counterClockwise)\n                        ctx.stroke()\n                    }\n\n                    if (this.alpha) {\n                        ctx.fillStyle = getAlphaColor(color, this.alpha)\n                        if (true === ctx.isSVG) {\n                            ctx.fillEllipse(xc, y, radiusX, radiusY, 0, 0, Math.PI, counterClockwise)\n                        } else {\n                            ctx.fill()\n                        }\n                    }\n\n                    if (this.showBlocks && feature.chr !== 'all') {\n                        ctx.fillStyle = color\n                        const s1 = (feature.start1 - bpStart) / xScale\n                        const e1 = (feature.end1 - bpStart) / xScale\n                        const s2 = (feature.start2 - bpStart) / xScale\n                        const e2 = (feature.end2 - bpStart) / xScale\n                        const hb = this.arcOrientation ? -this.blockHeight : this.blockHeight\n                        ctx.fillRect(s1, y, e1 - s1, hb)\n                        ctx.fillRect(s2, y, e2 - s2, hb)\n                    }\n\n                } else {\n                    // Inter chromosome\n                    let pixelStart = Math.round((feature.start - bpStart) / xScale)\n                    let pixelEnd = Math.round((feature.end - bpStart) / xScale)\n                    if (pixelEnd < 0 || pixelStart > pixelWidth || value < this.dataRange.min || value > this.dataRange.max) continue\n\n                    const h = Math.min(radiusY, this.height - 13)   // Leave room for text\n                    let w = (pixelEnd - pixelStart)\n                    if (w < 3) {\n                        w = 3\n                        pixelStart--\n                    }\n                    const otherChr = feature.chr === feature.chr1 ? feature.chr2 : feature.chr1\n                    ctx.font = \"8px sans-serif\"\n                    ctx.textAlign = \"center\"\n                    // get a sense of trans \"spread\"\n                    ctx.fillStyle = getAlphaColor(getChrColor(otherChr), 0.5)\n                    if (this.arcOrientation) {\n                        // UP\n                        const y = this.height - h\n                        ctx.fillRect(pixelStart, y, w, h)\n                        ctx.fillText(otherChr, pixelStart + w / 2, y - 5)\n                        feature.drawState = {x: pixelStart, y, w, h}\n                    } else {\n                        ctx.fillRect(pixelStart, 0, w, h)\n                        ctx.fillText(otherChr, pixelStart + w / 2, h + 13)\n                        feature.drawState = {x: pixelStart, y: 0, w, h}\n                    }\n                }\n            }\n        }\n    }\n\n    clearAxis(ctx, pixelWidth, pixelHeight) {\n        IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n    }\n\n    paintAxis(ctx, pixelWidth, pixelHeight) {\n        // dataRane is interpreted differently for interactino tracks -- all arcs are drawn from \"zero\", irrespective of dataRange.min\n        const axisRange = {min: 0, max: this.dataRange.max}\n        if (this.arcType === \"proportional\") {\n            this.painter.flipAxis = !this.arcOrientation\n            this.painter.dataRange = axisRange\n            this.painter.paintAxis(ctx, pixelWidth, pixelHeight)\n        } else if (this.arcType === \"inView\" || this.arcType === \"partialInView\") {\n            this.painter.flipAxis = !this.arcOrientation\n            this.painter.dataRange = axisRange\n            this.painter.paintAxis(ctx, pixelWidth, pixelHeight)\n        } else {\n            this.clearAxis(ctx, pixelWidth, pixelHeight)\n        }\n    }\n\n    menuItemList() {\n\n        let items = []\n\n        if (this.hasValue) {\n            items.push(\"<hr/>\")\n            const lut =\n                {\n                    \"nested\": \"Nested\",\n                    \"proportional\": \"Proportional - All\",\n                    \"inView\": \"Proportional - Both Ends in View\",\n                    \"partialInView\": \"Proportional - One End in View\"\n                }\n            items.push(\"<b>Arc Type</b>\")\n            for (let arcType of [\"nested\", \"proportional\", \"inView\", \"partialInView\"]) {\n                items.push(\n                    {\n                        object: $(createCheckbox(lut[arcType], arcType === this.arcType)),\n                        click: () => {\n                            this.arcType = arcType\n                            this.trackView.repaintViews()\n                        }\n                    })\n            }\n        }\n        items.push(\"<hr/>\")\n\n        items.push({\n            name: \"Toggle arc direction\",\n            click: () => {\n                this.arcOrientation = !this.arcOrientation\n                this.trackView.repaintViews()\n            }\n        })\n        items.push({\n            name: this.showBlocks ? \"Hide Blocks\" : \"Show Blocks\",\n            click: () => {\n                this.showBlocks = !this.showBlocks\n                this.trackView.repaintViews()\n            }\n        })\n\n\n        if (this.arcType === \"proportional\" || this.arcType === \"inView\" || this.arcType === \"partialInView\") {\n            // MenuUtils.numericDataMenuItems(this.trackView).forEach(item => items.push(item))\n            items = items.concat(MenuUtils.numericDataMenuItems(this.trackView))\n        }\n\n        if (this.browser.circularView) {\n            items.push('<hr/>')\n            items.push({\n                label: 'Add interactions to circular view',\n                click: () => {\n                    for (let viewport of this.trackView.viewports) {\n                        this.addChordsForViewport(viewport.referenceFrame)\n                    }\n                }\n            })\n        }\n\n        return items\n    }\n\n    contextMenuItemList(clickState) {\n\n        // Experimental JBrowse feature\n        if (this.browser.circularView) {\n            const viewport = clickState.viewport\n            const list = []\n\n            list.push({\n                label: 'Add interactions to circular view',\n                click: () => {\n                    const refFrame = viewport.referenceFrame\n                    // first pass: to get all the relevant features\n                    this.addChordsForViewport(refFrame)\n                }\n            })\n\n            list.push('<hr/>')\n            return list\n        }\n    }\n\n    /**\n     * Add chords to the circular view for the given viewport, represented by its reference frame\n     * @param refFrame\n     */\n    addChordsForViewport(refFrame) {\n        const cachedFeatures = \"all\" === refFrame.chr ?\n            this.featureSource.getAllFeatures() :\n            this.featureSource.featureCache.queryFeatures(refFrame.chr, refFrame.start, refFrame.end)\n\n        // inView features are simply features that have been drawn, i.e. have a drawState\n        const inView = cachedFeatures.filter(f => f.drawState)\n        if (inView.length === 0) return;\n\n        const chords = makeBedPEChords(inView)\n        sendChords(chords, this, refFrame, 0.5)\n        //\n        //\n        // // for filtered set, distinguishing the chromosomes is more critical than tracks\n        // const chordSetColor = IGVColor.addAlpha(\"all\" === refFrame.chr ? this.color : getChrColor(refFrame.chr), 0.5)\n        // const trackColor = IGVColor.addAlpha(this.color, 0.5)\n        //\n        // // name the chord set to include locus and filtering information\n        // const encodedName = this.name.replaceAll(' ', '%20')\n        // const chordSetName = \"all\" === refFrame.chr ?\n        //     encodedName :\n        //     `${encodedName} (${refFrame.chr}:${refFrame.start}-${refFrame.end} ; range:${this.dataRange.min}-${this.dataRange.max})`\n        // this.browser.circularView.addChords(chords, {track: chordSetName, color: chordSetColor, trackColor: trackColor})\n    }\n\n    doAutoscale(features) {\n\n        // if (\"proportional\" === this.arcType) {\n        let max = 0\n        if (features) {\n            for (let f of features) {\n                const v = this.valueColumn ? f[this.valueColumn] : f.score\n                if (!Number.isNaN(v)) {\n                    max = Math.max(max, v)\n                }\n            }\n        }\n        return {min: 0, max: max}\n        // }\n    }\n\n    popupData(clickState, features) {\n\n        if (features === undefined) features = this.clickedFeatures(clickState)\n\n        const data = []\n        for (let feature of features) {\n\n            const f = feature._ || feature   // For \"whole genome\" features, which keeps a pointer to the original\n\n            data.push({name: \"Region 1\", value: positionString(f.chr1, f.start1, f.end1, f.strand1)})\n            data.push({name: \"Region 2\", value: positionString(f.chr2, f.start2, f.end2, f.strand2)})\n            if (f.name) {\n                data.push({name: \"Name\", value: f.name})\n            }\n            if (f.value !== undefined) {\n                data.push({name: \"Value\", value: f.value})\n            }\n            if (f.score !== undefined) {\n                data.push({name: \"Score\", value: f.score})\n            }\n\n\n            if (f.extras && this.header && this.header.columnNames) {\n                const columnNames = this.header.columnNames\n                const stdColumns = this.header.hiccups ? 6 : 10\n                for (let i = stdColumns; i < columnNames.length; i++) {\n                    if (this.header.colorColumn === i) continue;\n                    if (columnNames[i] === 'info') {\n                        extractInfoColumn(data, f.extras[i - stdColumns])\n                    } else {\n                        data.push({name: columnNames[i], value: f.extras[i - stdColumns]})\n                    }\n                }\n            }\n            // For now just return the top hit\n            break\n\n            //if (data.length > 0) {\n            //     data.push(\"<HR>\");\n            // }\n        }\n        return data\n    }\n\n    clickedFeatures(clickState) {\n\n        // We use the cached features rather than method to avoid async load.  If the\n        // feature is not already loaded this won't work,  but the user wouldn't be mousing over it either.\n        const featureList = clickState.viewport.cachedFeatures\n        const candidates = []\n        if (featureList) {\n            const proportional = (this.arcType === \"proportional\" || this.arcType === \"inView\" || this.arcType === \"partialInView\")\n\n            for (let feature of featureList) {\n\n                if (!feature.drawState) continue\n\n                if (feature.chr1 === feature.chr2 || feature.chr === 'all') {\n                    if (proportional) {\n                        //(x-xc)^2/radiusX^2 + (y-yc)^2/radiusY^2 <= 1\n                        const {xc, yc, radiusX, radiusY} = feature.drawState\n                        const dx = clickState.canvasX - xc\n                        const dy = clickState.canvasY - yc\n                        const score = (dx / radiusX) * (dx / radiusX) + (dy / radiusY) * (dy / radiusY)\n                        if (score <= 1) {\n                            candidates.push({score: 1 / score, feature})\n                        }\n                    } else {\n                        const {xc, yc, r} = feature.drawState\n                        const dx = clickState.canvasX - xc\n                        const dy = clickState.canvasY - yc\n                        const score = Math.abs(Math.sqrt(dx * dx + dy * dy) - r)\n                        if (score < 5) {\n                            candidates.push({score, feature})\n                        }\n                    }\n                } else {\n                    const {x, y, w, h} = feature.drawState\n                    const tolerance = 5\n                    if (clickState.canvasX >= x - tolerance && clickState.canvasX <= x + w + tolerance &&\n                        clickState.canvasY >= y && clickState.canvasY <= y + h) {\n                        const score = -Math.abs(clickState.canvasX - (x + w / 2))\n                        candidates.push({score, feature})\n                        break\n                    }\n                }\n            }\n        }\n\n        if (candidates.length > 1) {\n            candidates.sort((a, b) => a.score - b.score)\n        }\n        return candidates.map((c) => c.feature)\n    }\n}\n\nfunction getMidpoints(feature, genome) {\n    let m1 = (feature.start1 + feature.end1) / 2\n    let m2 = (feature.start2 + feature.end2) / 2\n    if (feature.chr === 'all') {\n        m1 = genome.getGenomeCoordinate(feature.chr1, m1)\n        m2 = genome.getGenomeCoordinate(feature.chr2, m2)\n    }\n    if (m1 > m2) {\n        const tmp = m1\n        m1 = m2\n        m2 = tmp\n    }\n    return {m1, m2}\n}\n\nfunction positionString(chr, start, end, strand) {\n\n    return strand && strand !== '.' ?\n        `${chr}:${StringUtils.numberFormatter(start + 1)}-${StringUtils.numberFormatter(end)} (${strand})` :\n        `${chr}:${StringUtils.numberFormatter(start + 1)}-${StringUtils.numberFormatter(end)}`\n}\n\n/**\n * Estimate theta given the ratio of track height to 1/2 the feature width (coa).  This relationship is approximately linear.\n */\nfunction estimateTheta(x) {\n    let coa = [0.01570925532366355, 0.15838444032453644, 0.3249196962329063, 0.5095254494944288, 0.7265425280053609, 0.9999999999999999]\n    let theta = [0.031415926535897934, 0.3141592653589793, 0.6283185307179586, 0.9424777960769379, 1.2566370614359172, 1.5707963267948966]\n    let idx\n\n    for (idx = 0; idx < coa.length; idx++) {\n        if (coa[idx] > x) {\n            break\n        }\n    }\n\n    let left = idx === 0 ? 0 : coa[idx - 1]\n    let right = idx < coa.length ? coa[idx] : 1\n    let r = (x - left) / (right - left)\n\n    let thetaLeft = idx === 0 ? 0 : theta[idx - 1]\n    let thetaRight = idx < theta.length ? theta[idx] : Math.PI / 2\n\n    return Math.min(Math.PI/2,  (thetaLeft + r * (thetaRight - thetaLeft)))\n\n}\n\nconst colorAlphaCache = new Map()\n\nfunction getAlphaColor(color, alpha) {\n    const key = `${color}_${alpha}`\n    let c = colorAlphaCache.get(key)\n    if (!c) {\n        c = IGVColor.addAlpha(color, alpha)\n        colorAlphaCache.set(key, c)\n    }\n    return c\n}\n\n\n/**\n * Called in the context of FeatureSource  (i.e. this == the feature source (a TextFeatureSource) for the track\n *\n * @param allFeatures\n * @returns {[]}\n */\nfunction getWGFeatures(allFeatures) {\n\n    const makeWGFeature = (f) => {\n        const wg = Object.assign({}, f)\n        wg.chr = \"all\"\n        wg.start = genome.getGenomeCoordinate(f.chr1, f.start1)\n        wg.end = genome.getGenomeCoordinate(f.chr2, f.end2)\n        return wg\n    }\n\n    const genome = this.genome\n\n    // First pass -- find the max score feature\n    let maxScoreFeature\n    let totalFeatureCount = 0\n    for (let c of genome.wgChromosomeNames) {\n        let chrFeatures = allFeatures[c]\n        if (chrFeatures) {\n            for (let f of chrFeatures) {\n                if (!f.dup) {\n                    totalFeatureCount++\n                    if (f.score && (!maxScoreFeature || f.score > maxScoreFeature.score)) {\n                        maxScoreFeature = f\n                    }\n                }\n            }\n        }\n    }\n\n    const maxCount = this.maxWGCount\n    const nBins = maxScoreFeature && maxScoreFeature.score > 0 && totalFeatureCount > maxCount ? 5 : 1   // TODO make a function of total # of features & maxCount?\n    const featuresPerBin = Math.floor(maxCount / nBins)\n    const binSize = maxScoreFeature && maxScoreFeature.score > 0 ? Math.log(maxScoreFeature.score) / nBins : Number.MAX_SAFE_INTEGER\n\n    let binnedFeatures = []\n    let counts = []\n    for (let i = 0; i < nBins; i++) {\n        counts.push([0])\n        binnedFeatures.push([])\n    }\n\n    for (let c of genome.wgChromosomeNames) {\n        let chrFeatures = allFeatures[c]\n        if (chrFeatures) {\n            for (let f of chrFeatures) {\n                if (!f.dup) {\n                    const bin = f.score  ? Math.max(0, Math.min(nBins - 1, Math.floor(Math.log(f.score) / binSize))) : 0\n                    if (binnedFeatures[bin].length < featuresPerBin) {\n                        binnedFeatures[bin].push(makeWGFeature(f))\n                    } else {\n                        //Reservoir sampling\n                        const samplingProb = featuresPerBin / (counts[bin] + 1)\n                        if (Math.random() < samplingProb) {\n                            const idx = Math.floor(Math.random() * (featuresPerBin - 1))\n                            binnedFeatures[bin][idx] = makeWGFeature(f)\n                        }\n                    }\n                    counts[bin]++\n                }\n            }\n        }\n    }\n\n    let wgFeatures\n    if (nBins === 1) {\n        wgFeatures = binnedFeatures[0]\n    } else {\n        wgFeatures = []\n        for (let bf of binnedFeatures) {\n            for (let f of bf) wgFeatures.push(f)\n        }\n        // Keep the feature with max score\n        if (maxScoreFeature) {\n            wgFeatures.push(makeWGFeature(maxScoreFeature))\n        }\n        wgFeatures.sort(function (a, b) {\n            return a.start - b.start\n        })\n        console.log(wgFeatures.length)\n    }\n\n\n    return wgFeatures\n}\n\n/**\n * Extract a gff style info column for popup text.  This convention used by 10X for bedpe files\n *     ALLELIC_FRAC=0.0375670840787;BLACK1=.;BLACK2=.;...\n * @param data\n * @param str\n */\nfunction extractInfoColumn(data, str) {\n    const kvs = str.split(';')\n    for (let t of kvs) {\n        const kv = t.split('=')\n        if (kv.length === 2) {\n            data.push({name: kv[0], value: kv[1]})\n        }\n    }\n\n}\n\nexport default InteractionTrack\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport FeatureSource from '../feature/featureSource.js'\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport {createCheckbox} from \"../igv-icons.js\"\nimport {ColorTable, PaletteColorTable} from \"../util/colorPalletes.js\"\nimport {makeVCFChords, sendChords} from \"../jbrowse/circularViewUtils.js\"\nimport {FileUtils, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst isString = StringUtils.isString\n\nconst DEFAULT_COLOR = \"rgb(0,0,150)\"\nconst DEFAULT_VISIBILITY_WINDOW = 1000000\nconst TOP_MARGIN = 10\nconst STANDARD_FIELDS = new Map([[\"REF\", \"referenceBases\"], [\"ALT\", \"alternateBases\"], [\"QUAL\", \"quality\"], [\"FILTER\", \"filter\"]])\n\n\nclass VariantTrack extends TrackBase {\n\n    static defaults = {\n        displayMode: \"EXPANDED\",\n        sortDirection: \"ASC\",\n        showGenotypes: true,\n        squishedVariantHeight: 2,\n        squishedCallHeight: 1,\n        expandedCallHeight: 10,\n        expandedVGap: 2,\n        squishedVGap: 1,\n        expandedGroupGap: 10,\n        squishedGroupGap: 5,\n        featureHeight: 14,\n        noGenotypeColor: \"rgb(200,180,180)\",\n        noCallColor: \"rgb(225, 225, 225)\",\n        nonRefColor: \"rgb(200, 200, 215)\",\n        mixedColor: \"rgb(200, 220, 200)\",\n        homrefColor: \"rgb(200, 200, 200)\",\n        homvarColor: \"rgb(17,248,254)\",\n        hetvarColor: \"rgb(34,12,253)\",\n        colorBy: undefined,\n        visibilityWindow: undefined,\n        labelDisplayMode: undefined,\n        type: \"variant\"\n    }\n\n    constructor(config, browser) {\n        super(config, browser)\n    }\n\n    init(config) {\n\n        super.init(config)\n\n        this.expandedVariantHeight = config.expandedVariantHeight || config.variantHeight || 10\n\n        this.featureSource = FeatureSource(config, this.browser.genome)\n\n        this._initColorBy = config.colorBy\n        if (config.colorTable) {\n            this.colorTables = new Map()\n            this.colorTables.set(config.colorBy, new ColorTable(config.colorTable))\n        }\n        this._color = config.color\n        this._strokecolor = config.strokecolor\n        this._context_hook = config.context_hook\n\n\n        // The number of variant rows are computed dynamically, but start with \"1\" by default\n        this.variantRowCount(1)\n\n    }\n\n    async postInit() {\n\n        this.header = await this.getHeader()   // cricital, don't remove'\n        if (this.disposed) return   // This track was removed during async load\n        if (undefined === this.visibilityWindow && this.config.indexed !== false) {\n            const fn = FileUtils.isFile(this.config.url) ? this.config.url.name : this.config.url\n            if (isString(fn) && fn.toLowerCase().includes(\"gnomad\")) {\n                this.visibilityWindow = 1000  // these are known to be very dense\n            } else if (typeof this.featureSource.defaultVisibilityWindow === 'function') {\n                this.visibilityWindow = await this.featureSource.defaultVisibilityWindow()\n            } else {\n                this.visibilityWindow = DEFAULT_VISIBILITY_WINDOW\n            }\n        }\n        return this\n\n    }\n\n    get supportsWholeGenome() {\n        return this.config.indexed === false || this.config.supportsWholeGenome === true\n    }\n\n    get color() {\n        return this._color || DEFAULT_COLOR\n    }\n\n    set color(c) {\n        this._color = c\n        this.colorBy = undefined\n    }\n\n    async getHeader() {\n\n        if (!this.header) {\n            if (typeof this.featureSource.getHeader === \"function\") {\n                const header = await this.featureSource.getHeader()\n                if (header) {\n                    this.callSets = header.callSets || []\n                }\n                this.header = header\n            }\n            this.sampleNames = this.callSets ? this.callSets.map(cs => cs.name) : []\n        }\n\n        return this.header\n    }\n\n    getCallsetsLength() {\n        return this.callSets ? this.callSets.length : 0\n    }\n\n    async getFeatures(chr, start, end, bpPerPixel) {\n\n        if (this.header === undefined) {\n            this.header = await this.getHeader()\n        }\n        return this.featureSource.getFeatures({chr, start, end, bpPerPixel, visibilityWindow: this.visibilityWindow})\n    }\n\n    hasSamples() {\n        return this.getCallsetsLength() > 0\n    }\n\n    getSamples() {\n        return {\n            yOffset: this.sampleYOffset,\n            names: this.sampleNames,\n            height: this.sampleHeight\n        }\n    }\n\n    /**\n     * The required height in pixels required for the track content.   This is not the visible track height, which\n     * can be smaller (with a scrollbar) or larger.\n     *\n     * @param features\n     * @returns {*}\n     */\n    computePixelHeight(features) {\n\n        if (!features || features.length == 0) return TOP_MARGIN\n\n        const nVariantRows = (this.displayMode === \"COLLAPSED\") ? 1 : this.nVariantRows\n        const vGap = (this.displayMode === \"SQUISHED\") ? this.squishedVGap : this.expandedVGap\n        const variantHeight = (this.displayMode === \"SQUISHED\") ? this.squishedVariantHeight : this.expandedVariantHeight\n        const callHeight = (this.displayMode === \"SQUISHED\") ? this.squishedCallHeight : this.expandedCallHeight\n        const nCalls = this.showGenotypes === false ? 0 : this.getCallsetsLength() * nVariantRows\n        const h = TOP_MARGIN + nVariantRows * (variantHeight + vGap)\n        return h + vGap + (nCalls + 1) * (callHeight + vGap)\n\n    }\n\n    variantRowCount(count) {\n        this.nVariantRows = count\n    }\n\n    draw({context, pixelWidth, pixelHeight, bpPerPixel, bpStart, pixelTop, features}) {\n\n        IGVGraphics.fillRect(context, 0, pixelTop, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n\n        const vGap = (\"SQUISHED\" === this.displayMode) ? this.squishedVGap : this.expandedVGap\n        const rowCount = (\"COLLAPSED\" === this.displayMode) ? 1 : this.nVariantRows\n        const variantHeight = (\"SQUISHED\" === this.displayMode) ? this.squishedVariantHeight : this.expandedVariantHeight\n        this.variantBandHeight = TOP_MARGIN + rowCount * (variantHeight + vGap)\n\n        let callSets = this.callSets\n        if (!callSets && this._f) {\n            callSets = this._f.callSets   // \"Complementary\" variant for structural variants\n        }\n        const nCalls = this.getCallsetsLength()\n        if (callSets && nCalls > 0 && this.showGenotypes !== false) {\n            IGVGraphics.strokeLine(context, 0, this.variantBandHeight, pixelWidth, this.variantBandHeight, {strokeStyle: 'rgb(224,224,224) '})\n        }\n\n        if (features) {\n\n            const callHeight = (\"SQUISHED\" === this.displayMode) ? this.squishedCallHeight : this.expandedCallHeight\n            const vGap = (\"SQUISHED\" === this.displayMode) ? this.squishedVGap : this.expandedVGap\n            const bpEnd = bpStart + pixelWidth * bpPerPixel + 1\n\n            // Loop through variants.  A variant == a row in a VCF file\n            for (let variant of features) {\n\n                if (variant.end < bpStart) continue\n                if (variant.start > bpEnd) break\n\n                const variantHeight = (\"SQUISHED\" === this.displayMode) ? this.squishedVariantHeight : this.expandedVariantHeight\n                const y = TOP_MARGIN + (\"COLLAPSED\" === this.displayMode ? 0 : variant.row * (variantHeight + vGap))\n                const h = variantHeight\n\n                // Compute pixel width.   Minimum width is 3 pixels,  if > 5 pixels create gap between variants\n                let x = Math.round((variant.start - bpStart) / bpPerPixel)\n                let x1 = Math.round((variant.end - bpStart) / bpPerPixel)\n                let w = Math.max(1, x1 - x)\n                if (w < 3) {\n                    w = 3\n                    x -= 1\n                } else if (w > 5) {\n                    x += 1\n                    w -= 2\n                }\n                context.fillStyle = this.getColorForFeature(variant)\n                context.fillRect(x, y, w, h)\n\n                //only paint stroke if a color is defined\n                let strokecolor = this.getVariantStrokecolor(variant)\n                if (strokecolor) {\n                    context.strokeStyle = strokecolor\n                    context.strokeRect(x, y, w, h)\n                }\n\n                // call hook if _context_hook fn is defined\n                this.callContextHook(variant, context, x, y, w, h)\n\n                variant.pixelRect = {x, y, w, h}\n\n                // Loop though the calls for this variant.  There will potentially be a call for each sample.\n                if (nCalls > 0 && this.showGenotypes !== false) {\n\n                    const nVariantRows = \"COLLAPSED\" === this.displayMode ? 1 : this.nVariantRows\n                    this.sampleYOffset = this.variantBandHeight + vGap\n                    this.sampleHeight = nVariantRows * (callHeight + vGap)  // For each sample, there is a call for each variant at this position\n\n                    let sampleNumber = 0\n                    if (callSets && variant.calls) {\n                        for (let callSet of callSets) {\n                            const call = variant.calls[callSet.id]\n                            if (call) {\n                                const row = \"COLLAPSED\" === this.displayMode ? 0 : variant.row\n                                const py = this.sampleYOffset + sampleNumber * this.sampleHeight + row * (callHeight + vGap)\n                                let allVar = true  // until proven otherwise\n                                let allRef = true\n                                let noCall = false\n\n                                if (call.genotype) {\n                                    for (let g of call.genotype) {\n                                        if ('.' === g) {\n                                            noCall = true\n                                            break\n                                        } else {\n                                            if (g !== 0) allRef = false\n                                            if (g === 0) allVar = false\n                                        }\n                                    }\n                                }\n\n                                if (!call.genotype) {\n                                    context.fillStyle = this.noGenotypeColor\n                                } else if (noCall) {\n                                    context.fillStyle = this.noCallColor\n                                } else if (allRef) {\n                                    context.fillStyle = this.homrefColor\n                                } else if (allVar) {\n                                    context.fillStyle = this.homvarColor\n                                } else {\n                                    context.fillStyle = this.hetvarColor\n                                }\n\n                                context.fillRect(x, py, w, callHeight)\n\n                                callSet.pixelRect = {x, y: py, w, h: callHeight}\n                            }\n                            sampleNumber++\n                        }\n                    }\n                }\n            }\n\n        } else {\n            console.log(\"No feature list\")\n        }\n    };\n\n\n    getColorForFeature(variant) {\n\n        const v = variant._f || variant\n        let variantColor\n\n        if (this.colorBy) {\n            const colorBy = this.colorBy\n            let value\n            if (v.info.hasOwnProperty(colorBy)) {\n                value = v.info[colorBy]\n            } else if (STANDARD_FIELDS.has(colorBy)) {\n                const key = STANDARD_FIELDS.get(colorBy)\n                value = v[key]\n            }\n            variantColor = this.getVariantColorTable(colorBy).getColor(value)\n            if (!variantColor) {\n                variantColor = \"gray\"\n            }\n\n        } else if (this._color) {\n            variantColor = (typeof this._color === \"function\") ? this._color(variant) : this._color\n        } else if (\"NONVARIANT\" === v.type) {\n            variantColor = this.nonRefColor\n        } else if (\"MIXED\" === v.type) {\n            variantColor = this.mixedColor\n        } else {\n            variantColor = this.color\n        }\n        return variantColor\n    }\n\n\n    getVariantStrokecolor(variant) {\n\n        const v = variant._f || variant\n        let variantStrokeColor\n\n        if (this._strokecolor) {\n            variantStrokeColor = (typeof this._strokecolor === \"function\") ? this._strokecolor(v) : this._strokecolor\n        } else {\n            variantStrokeColor = undefined\n        }\n        return variantStrokeColor\n    }\n\n    callContextHook(variant, context, x, y, w, h) {\n        if (this._context_hook) {\n            if (typeof this._context_hook === \"function\") {\n                const v = variant._f || variant\n\n                context.save()\n                this._context_hook(v, context, x, y, w, h)\n                context.restore()\n            }\n        }\n    }\n\n    clickedFeatures(clickState) {\n\n        let featureList = super.clickedFeatures(clickState)\n\n        const vGap = (this.displayMode === 'EXPANDED') ? this.expandedVGap : this.squishedVGap\n        const callHeight = vGap + (\"SQUISHED\" === this.displayMode ? this.squishedCallHeight : this.expandedCallHeight)\n        // Find the variant row (i.e. row assigned during feature packing)\n        const yOffset = clickState.y\n        if (yOffset <= this.variantBandHeight) {\n            // Variant\n            const variantHeight = (\"SQUISHED\" === this.displayMode) ? this.squishedVariantHeight : this.expandedVariantHeight\n            const variantRow = Math.floor((yOffset - TOP_MARGIN) / (variantHeight + vGap))\n            if (\"COLLAPSED\" !== this.displayMode) {\n                featureList = featureList.filter(f => f.row === variantRow)\n            }\n        } else if (this.callSets) {\n            const callSets = this.callSets\n            const sampleY = yOffset - this.variantBandHeight\n            const sampleRow = Math.floor(sampleY / this.sampleHeight)\n            if (sampleRow >= 0 && sampleRow < callSets.length) {\n                const variantRow = Math.floor((sampleY - sampleRow * this.sampleHeight) / callHeight)\n                const variants = \"COLLAPSED\" === this.displayMode ? featureList : featureList.filter(f => f.row === variantRow)\n                const cs = callSets[sampleRow]\n                featureList = variants.map(v => {\n                    const call = v.calls[cs.id]\n                    expandGenotype(call, v)\n                    return call\n                })\n            }\n        }\n\n        return featureList\n    }\n\n\n    /**\n     * Return \"popup data\" for feature @ genomic location.  Data is an array of key-value pairs\n     */\n    popupData(clickState, featureList) {\n\n        if (featureList === undefined) featureList = this.clickedFeatures(clickState)\n        const genomicLocation = clickState.genomicLocation\n        const genomeID = this.browser.genome.id\n        const sampleInformation = this.browser.sampleInformation\n\n        let popupData = []\n        for (let v of featureList) {\n\n            const f = v._f || v    // Get real variant from psuedo-variant, e.g. whole genome or SV mate\n\n            if (popupData.length > 0) {\n                popupData.push({html: '<hr style=\"border-top-width:2px ;border-color: #c9c3ba\" />'})\n            }\n\n            if (typeof f.popupData === 'function') {\n                const v = f.popupData(genomicLocation, genomeID)\n                Array.prototype.push.apply(popupData, v)\n            } else {\n                // Assume this is a call (genotype)\n                const call = f\n\n                if (call.callSetName !== undefined) {\n                    popupData.push({name: 'Name', value: call.callSetName})\n                }\n\n                if (call.genotypeName) {\n                    popupData.push({name: 'Genotype', value: call.genotypeName})\n                }\n\n                if (call.phaseset !== undefined) {\n                    popupData.push({name: 'Phase set', value: call.phaseset})\n                }\n                if (call.genotypeLikelihood !== undefined) {\n                    popupData.push({name: 'genotypeLikelihood', value: call.genotypeLikelihood.toString()})\n                }\n\n                if (sampleInformation) {\n                    var attr = sampleInformation.getAttributes(call.callSetName)\n                    if (attr) {\n                        Object.keys(attr).forEach(function (attrName) {\n                            var displayText = attrName.replace(/([A-Z])/g, \" $1\")\n                            displayText = displayText.charAt(0).toUpperCase() + displayText.slice(1)\n                            popupData.push({name: displayText, value: attr[attrName]})\n                        })\n                    }\n                }\n\n                var infoKeys = Object.keys(call.info)\n                if (infoKeys.length) {\n                    popupData.push('<hr/>')\n                }\n                infoKeys.forEach(function (key) {\n                    popupData.push({name: key, value: decodeURIComponent(call.info[key])})\n                })\n            }\n        }\n        return popupData\n\n    }\n\n\n// VariantTrack.prototype.contextMenuItemList = function (clickState) {\n//\n//     const self = this;\n//     const menuItems = [];\n//\n//     const featureList = this.clickedFeatures(clickState);\n//\n//     if (this.callSets && featureList && featureList.length > 0) {\n//\n//         featureList.forEach(function (variant) {\n//\n//             if ('str' === variant.type) {\n//\n//                 menuItems.push({\n//                     label: 'Sort by allele length',\n//                     click: function () {\n//                         sortCallSetsByAlleleLength(self.callSets, variant, self.sortDirection);\n//                         self.sortDirection = (self.sortDirection === \"ASC\") ? \"DESC\" : \"ASC\";\n//                         self.trackView.repaintViews();\n//                     }\n//                 });\n//\n//             }\n//\n//         });\n//     }\n//\n//\n//     function sortCallSetsByAlleleLength(callSets, variant, direction) {\n//         var d = (direction === \"DESC\") ? 1 : -1;\n//         Object.keys(callSets).forEach(function (property) {\n//             callSets[property].sort(function (a, b) {\n//                 var aNan = isNaN(variant.calls[a.id].genotype[0]);\n//                 var bNan = isNaN(variant.calls[b.id].genotype[0]);\n//                 if (aNan && bNan) {\n//                     return 0;\n//                 } else if (aNan) {\n//                     return 1;\n//                 } else if (bNan) {\n//                     return -1;\n//                 } else {\n//                     var a0 = getAlleleString(variant.calls[a.id], variant, 0);\n//                     var a1 = getAlleleString(variant.calls[a.id], variant, 1);\n//                     var b0 = getAlleleString(variant.calls[b.id], variant, 0);\n//                     var b1 = getAlleleString(variant.calls[b.id], variant, 1);\n//                     var result = Math.max(b0.length, b1.length) - Math.max(a0.length, a1.length);\n//                     if (result === 0) {\n//                         result = Math.min(b0.length, b1.length) - Math.min(a0.length, a1.length);\n//                     }\n//                     return d * result;\n//                 }\n//             });\n//         });\n//     }\n//\n//\n//     return menuItems;\n//\n// };\n\n    menuItemList() {\n\n        const menuItems = []\n\n        // color-by INFO attribute\n        if (this.header.INFO) {\n            //Code below will present checkboxes for all info fields of type \"String\".   Wait until this is requested\n            //const stringInfoKeys = Object.keys(this.header.INFO).filter(key => \"String\" === this.header.INFO[key].Type);\n\n            // For now stick to explicit info fields (well, exactly 1 for starters)\n            if (this.header.INFO) {\n                //const stringInfoKeys = Object.keys(this.header.INFO).filter(key => this.header.INFO[key].Type === \"String\")\n                const stringInfoKeys = this.header.INFO.SVTYPE ? ['SVTYPE'] : []\n                if (this._initColorBy && this._initColorBy !== 'SVTYPE') {\n                    stringInfoKeys.push(this._initColorBy)\n                }\n                if (stringInfoKeys.length > 0) {\n                    menuItems.push('<hr/>')\n                    const $e = $('<div class=\"igv-track-menu-category igv-track-menu-border-top\">')\n                    $e.text('Color by:')\n                    menuItems.push({name: undefined, object: $e, click: undefined, init: undefined})\n                    stringInfoKeys.sort()\n                    for (let item of stringInfoKeys) {\n                        const selected = (this.colorBy === item)\n                        const label = item ? item : 'None'\n                        menuItems.push(this.colorByCB({key: item, label: label}, selected))\n                    }\n                    menuItems.push(this.colorByCB({key: undefined, label: 'None'}, this.colorBy === undefined))\n                    menuItems.push('<hr/>')\n                }\n            }\n        }\n\n        if (this.getCallsetsLength() > 0) {\n            menuItems.push({object: $('<div class=\"igv-track-menu-border-top\">')})\n            menuItems.push({\n                object: $(createCheckbox(\"Show Genotypes\", this.showGenotypes)),\n                click: () => {\n                    this.showGenotypes = !this.showGenotypes\n                    //adjustTrackHeight();\n                    this.trackView.checkContentHeight()\n                    this.trackView.repaintViews()\n                }\n            })\n        }\n\n        menuItems.push({object: $('<div class=\"igv-track-menu-border-top\">')})\n        for (let displayMode of [\"COLLAPSED\", \"SQUISHED\", \"EXPANDED\"]) {\n            var lut =\n                {\n                    \"COLLAPSED\": \"Collapse\",\n                    \"SQUISHED\": \"Squish\",\n                    \"EXPANDED\": \"Expand\"\n                }\n\n            menuItems.push(\n                {\n                    object: $(createCheckbox(lut[displayMode], displayMode === this.displayMode)),\n                    click: () => {\n                        this.displayMode = displayMode\n                        this.trackView.checkContentHeight()\n                        this.trackView.repaintViews()\n                    }\n                })\n        }\n\n        // Experimental JBrowse circular view integration\n        if (this.browser.circularView) {\n\n            menuItems.push('<hr>')\n            menuItems.push({\n                label: 'Add SVs to circular view',\n                click: () => {\n                    const inView = []\n                    for (let viewport of this.trackView.viewports) {\n                        this.sendChordsForViewport(viewport)\n                    }\n                }\n            })\n        }\n\n        return menuItems\n    }\n\n\n    contextMenuItemList(clickState) {\n\n        // Experimental JBrowse circular view integration\n        if (this.browser.circularView) {\n            const viewport = clickState.viewport\n            const list = []\n\n            list.push({\n                label: 'Add SVs to Circular View',\n                click: () => {\n                    this.sendChordsForViewport(viewport)\n                }\n            })\n\n            list.push('<hr/>')\n            return list\n        }\n    }\n\n\n    sendChordsForViewport(viewport) {\n        const refFrame = viewport.referenceFrame\n        let inView\n        if (\"all\" === refFrame.chr) {\n            const all = this.featureSource.getAllFeatures()\n            const arrays = Object.keys(all).map(k => all[k])\n            inView = [].concat(...arrays)\n        } else {\n            inView = this.featureSource.featureCache.queryFeatures(refFrame.chr, refFrame.start, refFrame.end)\n\n        }\n\n        const chords = makeVCFChords(inView)\n        sendChords(chords, this, refFrame, 0.5)\n    }\n\n    /**\n     * Create a \"color by\" checkbox menu item, optionally initially checked\n     * @param menuItem\n     * @param showCheck\n     * @returns {{init: undefined, name: undefined, click: clickHandler, object: (jQuery|HTMLElement|jQuery.fn.init)}}\n     */\n    colorByCB(menuItem, showCheck) {\n\n        const $e = $(createCheckbox(menuItem.label, showCheck))\n        const clickHandler = () => {\n\n            if (menuItem.key === this.colorBy) {\n                this.colorBy = undefined\n                delete this.config.colorBy\n                this.trackView.repaintViews()\n            } else {\n                this.colorBy = menuItem.key\n                this.config.colorBy = menuItem.key\n                this.trackView.repaintViews()\n            }\n\n        }\n\n        return {name: undefined, object: $e, click: clickHandler, init: undefined}\n    }\n\n    getState() {\n\n        const config = super.getState()\n        if (this._color && typeof this._color !== \"function\") {\n            config.color = this._color\n        }\n        return config\n\n    }\n\n    getVariantColorTable(key) {\n\n        if (!this.colorTables) {\n            this.colorTables = new Map()\n        }\n\n        if (!this.colorTables.has(key)) {\n            let tbl\n            switch (key) {\n                case \"SVTYPE\" :\n                    tbl = SV_COLOR_TABLE\n                    break\n                default:\n                    tbl = new PaletteColorTable(\"Set1\")\n            }\n            this.colorTables.set(key, tbl)\n        }\n        return this.colorTables.get(key)\n    }\n}\n\n\nfunction expandGenotype(call, variant) {\n\n    if (call.genotype) {\n        let gt = ''\n        if (variant.alternateBases === \".\") {\n            gt = \"No Call\"\n        } else {\n            const altArray = variant.alternateBases.split(\",\")\n            for (let allele of call.genotype) {\n                if (gt.length > 0) {\n                    gt += \"|\"\n                }\n                if ('.' === allele) {\n                    gt += '.'\n                } else if (allele === 0) {\n                    gt += variant.referenceBases\n                } else {\n                    let alt = altArray[allele - 1].replace(\"<\", \"&lt;\")\n                    gt += alt\n                }\n            }\n        }\n        call.genotypeName = gt\n    }\n}\n\n\nconst SV_COLOR_TABLE = new ColorTable({\n    'DEL': '#ff2101',\n    'INS': '#001888',\n    'DUP': '#028401',\n    'INV': '#008688',\n    'CNV': '#8931ff',\n    'BND': '#891100',\n    '*': '#002eff'\n})\n\n\nexport default VariantTrack\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport FeatureSource from '../feature/featureSource.js'\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport {IGVMath} from \"../../node_modules/igv-utils/src/index.js\"\nimport MenuUtils from \"../ui/menuUtils.js\"\nimport GtexUtils from \"./gtexUtils.js\"\n\nclass EqtlTrack extends TrackBase {\n\n    constructor(config, browser) {\n\n        super(config, browser)\n    }\n\n    init(config) {\n        super.init(config)\n\n        this.name = config.name\n        this.pValueField = config.pValueField || \"pValue\"\n        this.geneField = config.geneField || \"geneSymbol\"\n        this.snpField = config.snpField || \"snp\"\n\n        const min = config.minLogP || config.min\n        const max = config.maxLogP || config.max\n        this.dataRange = {\n            min: min || 3.5,\n            max: max || 25\n        }\n        if (!max) {\n            this.autoscale = true\n        } else {\n            this.autoscale = config.autoscale\n        }\n        this.autoscalePercentile = (config.autoscalePercentile === undefined ? 98 : config.autoscalePercentile)\n\n\n        this.background = config.background    // No default\n        this.divider = config.divider || \"rgb(225,225,225)\"\n        this.dotSize = config.dotSize || 2\n        this.height = config.height || 100\n        this.autoHeight = false\n        this.disableButtons = config.disableButtons\n\n        // Limit visibility window to 2 mb,  gtex server gets flaky beyond that\n        this.visibilityWindow = config.visibilityWindow === undefined ?\n            2000000 : config.visibilityWindow >= 0 ? Math.min(2000000, config.visibilityWindow) : 2000000\n\n        this.featureSource = FeatureSource(config, this.browser.genome)\n\n        GtexUtils.gtexLoaded = true\n    }\n\n    paintAxis(ctx, pixelWidth, pixelHeight) {\n\n        const yScale = (this.dataRange.max - this.dataRange.min) / pixelHeight\n\n        const font = {\n            'font': 'normal 10px Arial',\n            'textAlign': 'right',\n            'strokeStyle': \"black\"\n        }\n\n        IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n\n        // Determine a tick spacing such that there is at least 10 pixels between ticks\n\n        const n = Math.ceil((this.dataRange.max - this.dataRange.min) * 10 / pixelHeight)\n\n        for (let p = 4; p <= this.dataRange.max; p += n) {\n\n            // TODO: Dashes may not actually line up with correct scale. Ask Jim about this\n\n            const ref = 0.85 * pixelWidth\n            const x1 = ref - 5\n            const x2 = ref\n            const y = pixelHeight - (p - this.dataRange.min) / yScale\n\n            IGVGraphics.strokeLine(ctx, x1, y, x2, y, font) // Offset dashes up by 2 pixel\n\n            if (y > 8) {\n                IGVGraphics.fillText(ctx, p, x1 - 1, y + 2, font)\n            } // Offset numbers down by 2 pixels;\n        }\n\n        font['textAlign'] = 'center'\n\n        IGVGraphics.fillText(ctx, \"-log10(pvalue)\", pixelWidth / 4, pixelHeight / 2, font, {rotate: {angle: -90}})\n\n    };\n\n    async getFeatures(chr, start, end) {\n\n        const pValueField = this.pValueField\n        const visibilityWindow = this.visibilityWindow\n        const features = await this.featureSource.getFeatures({chr, start, end, visibilityWindow})\n        features.forEach(function (f) {\n            f.value = f[pValueField]\n        })\n        return features\n    }\n\n    draw(options) {\n\n        const ctx = options.context\n\n        const pixelWidth = options.pixelWidth\n        const pixelHeight = options.pixelHeight\n\n        if (this.background) {\n            IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': this.background})\n        }\n        IGVGraphics.strokeLine(ctx, 0, pixelHeight - 1, pixelWidth, pixelHeight - 1, {'strokeStyle': this.divider})\n\n        const drawEqtls = (drawSelected) => {\n\n            const radius = drawSelected ? 2 * this.dotSize : this.dotSize\n            const bpStart = options.bpStart\n            const yScale = (this.dataRange.max - this.dataRange.min) / pixelHeight\n            const selection = options.referenceFrame.selection\n\n            for (let eqtl of options.features) {\n\n                const px = (eqtl.start - bpStart + 0.5) / options.bpPerPixel\n                if (px < 0) continue\n                else if (px > pixelWidth) break\n\n                const snp = eqtl.snp.toUpperCase()\n                const geneName = eqtl[this.geneField].toUpperCase()\n\n                const isSelected = selection &&\n                    (selection.snp === snp || selection.gene === geneName)\n\n                if (!drawSelected || isSelected) {\n\n                    // Add eqtl's gene to the selection if this is the selected snp.\n                    // TODO -- this should not be done here in the rendering code.\n                    if (selection && selection.snp === snp) {\n                        selection.addGene(geneName)\n                    }\n\n                    var mLogP = -Math.log(eqtl[this.pValueField]) / Math.LN10\n                    if (mLogP >= this.dataRange.min) {\n                        let capped\n                        if (mLogP > this.dataRange.max) {\n                            mLogP = this.dataRange.max\n                            capped = true\n                        } else {\n                            capped = false\n\n                        }\n\n                        const py = Math.max(0 + radius, pixelHeight - Math.round((mLogP - this.dataRange.min) / yScale))\n                        eqtl.px = px\n                        eqtl.py = py\n                        eqtl.radius = radius\n\n                        let color\n                        if (drawSelected && selection) {\n                            color = selection.colorForGene(geneName)\n                            IGVGraphics.setProperties(ctx, {fillStyle: color, strokeStyle: \"black\"})\n                        } else {\n                            color = capped ? \"rgb(150, 150, 150)\" : \"rgb(180, 180, 180)\"\n                            IGVGraphics.setProperties(ctx, {fillStyle: color, strokeStyle: color})\n                        }\n\n                        IGVGraphics.fillCircle(ctx, px, py, radius)\n                        IGVGraphics.strokeCircle(ctx, px, py, radius)\n                    }\n                }\n            }\n        }\n\n        // Draw in two passes, with \"selected\" eqtls drawn last\n        drawEqtls(false)\n        drawEqtls(true)\n\n    }\n\n    /**\n     * Return \"popup data\" for feature @ genomic location.  Data is an array of key-value pairs\n     */\n    popupData(clickState, features) {\n\n        if(features === undefined) features = clickState.viewport.cachedFeatures\n        if (!features || features.length === 0) return []\n\n        const tolerance = 3\n        const tissue = this.name\n        const popupData = []\n\n        for (let feature of features) {\n            // Hit test --use square vs circle for efficiency (no sqrt)\n            if (Math.abs(feature.px - clickState.canvasX) < (feature.radius + tolerance) &&\n                Math.abs(feature.py - clickState.canvasY) < (feature.radius + tolerance)) {\n\n                if (popupData.length > 0) {\n                    popupData.push('<hr/>')\n                }\n                popupData.push(\n                    {name: \"snp id\", value: feature.snp},\n                    {name: \"gene id\", value: feature.geneId},\n                    {name: \"gene name\", value: feature.geneName},\n                    {name: \"p value\", value: feature.pValue},\n                    {name: \"tissue\", value: tissue})\n\n            }\n        }\n\n        return popupData\n    }\n\n    menuItemList() {\n        return MenuUtils.numericDataMenuItems(this.trackView)\n    }\n\n    doAutoscale(featureList) {\n\n        if (featureList.length > 0) {\n\n            var values = featureList\n                .map(function (eqtl) {\n                    return -Math.log(eqtl.value) / Math.LN10\n                })\n\n            this.dataRange.max = IGVMath.percentile(values, this.autoscalePercentile)\n        } else {\n            // No features -- default\n            const max = this.config.maxLogP || this.config.max\n            this.dataRange.max = max || 25\n        }\n\n        return this.dataRange\n    }\n\n}\n\nexport default EqtlTrack\n","/**\n * Colors used for coding omosomes\n */\n\nconst GWASColors = {\n    \"X\": \"rgb(204, 153, 0)\",\n    \"Y\": \"rgb(153, 204, 0)\",\n    \"Un\": \"darkGray)\",\n    \"1\": \"rgb(80, 80, 255)\",\n    \"2\": \"rgb(206, 61, 50)\",\n    \"2a\": \"rgb(210, 65, 55)\",\n    \"2b\": \"rgb(215, 70, 60)\",\n    \"3\": \"rgb(116, 155, 88)\",\n    \"4\": \"rgb(240, 230, 133)\",\n    \"5\": \"rgb(70, 105, 131)\",\n    \"6\": \"rgb(186, 99, 56)\",\n    \"7\": \"rgb(93, 177, 221)\",\n    \"8\": \"rgb(128, 34, 104)\",\n    \"9\": \"rgb(107, 215, 107)\",\n    \"10\": \"rgb(213, 149, 167)\",\n    \"11\": \"rgb(146, 72, 34)\",\n    \"12\": \"rgb(131, 123, 141)\",\n    \"13\": \"rgb(199, 81, 39)\",\n    \"14\": \"rgb(213, 143, 92)\",\n    \"15\": \"rgb(122, 101, 165)\",\n    \"16\": \"rgb(228, 175, 105)\",\n    \"17\": \"rgb(59, 27, 83)\",\n    \"18\": \"rgb(205, 222, 183)\",\n    \"19\": \"rgb(97, 42, 121)\",\n    \"20\": \"rgb(174, 31, 99)\",\n    \"21\": \"rgb(231, 199, 111)\",\n    \"22\": \"rgb(90, 101, 94)\",\n    \"23\": \"rgb(204, 153, 0)\",\n    \"24\": \"rgb(153, 204, 0)\",\n    \"25\": \"rgb(51, 204, 0)\",\n    \"26\": \"rgb(0, 204, 51)\",\n    \"27\": \"rgb(0, 204, 153)\",\n    \"28\": \"rgb(0, 153, 204)\",\n    \"29\": \"rgb(10, 71, 255)\",\n    \"30\": \"rgb(71, 117, 255)\",\n    \"31\": \"rgb(255, 194, 10)\",\n    \"32\": \"rgb(255, 209, 71)\",\n    \"33\": \"rgb(153, 0, 51)\",\n    \"34\": \"rgb(153, 26, 0)\",\n    \"35\": \"rgb(153, 102, 0)\",\n    \"36\": \"rgb(128, 153, 0)\",\n    \"37\": \"rgb(51, 153, 0)\",\n    \"38\": \"rgb(0, 153, 26)\",\n    \"39\": \"rgb(0, 153, 102)\",\n    \"40\": \"rgb(0, 128, 153)\",\n    \"41\": \"rgb(0, 51, 153)\",\n    \"42\": \"rgb(26, 0, 153)\",\n    \"43\": \"rgb(102, 0, 153)\",\n    \"44\": \"rgb(153, 0, 128)\",\n    \"45\": \"rgb(214, 0, 71)\",\n    \"46\": \"rgb(255, 20, 99)\",\n    \"47\": \"rgb(0, 214, 143)\",\n    \"48\": \"rgb(20, 255, 177)\"\n}\n\n//  aliasing\nfor (let key of Object.keys(GWASColors)) {\n    const altName = \"chr\" + key\n    GWASColors[altName] = GWASColors[key]\n}\n\n// romanizing\nfor(let a = 1; a <= 48; a++) {\n    if(a === 10) continue   // Don't overide \"X\"\n    const roman = romanize(a)\n    GWASColors[roman] = GWASColors[a.toString()]\n}\n\n\nfunction romanize (num) {\n    if (!+num) return false;\n    var digits = String(+num).split('');\n    var key = ['','C','CC','CCC','CD','D','DC','DCC','DCCC','CM',\n        '','X','XX','XXX','XL','L','LX','LXX','LXXX','XC',\n        '','I','II','III','IV','V','VI','VII','VIII','IX'];\n    var roman = '', i = 3;\n    while (i--) roman = (key[+digits.pop() + (i * 10)] || '') + roman;\n    return Array(+digits.join('') + 1).join('M') + roman;\n}\n\nexport default GWASColors","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport FeatureSource from '../feature/featureSource.js'\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport {BinnedColorScale, ConstantColorScale} from \"../util/colorScale.js\"\nimport {doAutoscale} from \"../util/igvUtils.js\"\nimport MenuUtils from \"../ui/menuUtils.js\"\nimport GWASColors from \"./gwasColors.js\"\nimport {ColorTable, randomColor} from \"../util/colorPalletes.js\"\nimport GwasColors from \"./gwasColors.js\"\n\nconst DEFAULT_POPOVER_WINDOW = 100000000\n\n//const type = \"gwas\";\n\nclass GWASTrack extends TrackBase {\n\n    constructor(config, browser) {\n\n        super(config, browser)\n    }\n\n    init(config) {\n\n        super.init(config)\n\n        this.useChrColors = config.useChrColors === undefined ? true : config.useChrColors\n        this.trait = config.trait\n        this.posteriorProbability = config.posteriorProbability\n        this.valueProperty = \"bed\" === config.format ? \"score\" : \"value\"\n        this.height = config.height || 100   // The preferred height\n        this.autoscale = config.autoscale\n        this.autoscalePercentile = config.autoscalePercentile === undefined ? 98 : config.autoscalePercentile\n        this.background = config.background    // No default\n        this.divider = config.divider || \"rgb(225,225,225)\"\n        this.dotSize = config.dotSize || 3\n        this.popoverWindow = (config.popoverWindow === undefined ? DEFAULT_POPOVER_WINDOW : config.popoverWindow)\n\n        // Color settings\n        if (this.useChrColors) {\n            this.colorScale = new ColorTable(config.colorTable || GWASColors)\n        } else if (config.color) {\n            this.colorScale = new ConstantColorScale(config.color)\n        } else {\n            this.colorScale =\n                new BinnedColorScale(config.colorScale ||\n                    {\n                        thresholds: [5e-8, 5e-4, 0.5],\n                        colors: [\"rgb(255,50,50)\", \"rgb(251,100,100)\", \"rgb(251,170,170)\", \"rgb(227,238,249)\"],\n                    })\n        }\n\n        this.featureSource = FeatureSource(config, this.browser.genome)\n    }\n\n    async postInit() {\n\n        if (typeof this.featureSource.getHeader === \"function\") {\n            this.header = await this.featureSource.getHeader()\n            if (this.disposed) return   // This track was removed during async load\n        }\n\n        // Set properties from track line\n        if (this.header) {\n            this.setTrackProperties(this.header)   // setTrackProperties defined in TrackBase\n        }\n\n        // Set initial range if specfied, unless autoscale == true\n        if (!this.autoscale) {\n            if (this.posteriorProbability) {\n                this.dataRange = {\n                    min: this.config.min === undefined ? 0 : this.config.min,\n                    max: this.config.max === undefined ? 1 : this.config.max\n                }\n            } else {\n                this.dataRange = {\n                    min: this.config.min === undefined ? 0 : this.config.min,\n                    max: this.config.max === undefined ? 25 : this.config.max\n                }\n            }\n        }\n\n        return this\n\n    }\n\n\n    get supportsWholeGenome() {\n        return true\n    }\n\n    async getFeatures(chr, start, end) {\n        const visibilityWindow = this.visibilityWindow\n        return this.featureSource.getFeatures({chr, start, end, visibilityWindow})\n    }\n\n    draw(options) {\n\n        const featureList = options.features\n        const ctx = options.context\n        const pixelWidth = options.pixelWidth\n        const pixelHeight = options.pixelHeight\n        if (this.background) {\n            IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': this.background})\n        }\n        IGVGraphics.strokeLine(ctx, 0, pixelHeight - 1, pixelWidth, pixelHeight - 1, {'strokeStyle': this.divider})\n\n        if (featureList) {\n\n            const bpPerPixel = options.bpPerPixel\n            const bpStart = options.bpStart\n            const bpEnd = bpStart + pixelWidth * bpPerPixel + 1\n            for (let variant of featureList) {\n                const pos = variant.start\n                if (pos < bpStart) continue\n                if (pos > bpEnd) break\n\n                let val\n                if (this.posteriorProbability) {\n                    val = variant[this.valueProperty]\n                } else {\n                    const pvalue = variant[this.valueProperty]\n                    if (!pvalue) continue\n                    val = -Math.log10(pvalue)\n                }\n\n                const colorKey = this.useChrColors ?\n                    variant._f ? variant._f.chr : variant.chr :\n                    val\n\n                const color = this.colorScale.getColor(colorKey)\n                const yScale = (this.dataRange.max - this.dataRange.min) / pixelHeight\n                const px = Math.round((pos - bpStart) / bpPerPixel)\n                const py = Math.max(this.dotSize, pixelHeight - Math.round((val - this.dataRange.min) / yScale))\n\n                if (color) {\n                    IGVGraphics.setProperties(ctx, {fillStyle: color, strokeStyle: \"black\"})\n                }\n                IGVGraphics.fillCircle(ctx, px, py, this.dotSize)\n                variant.px = px\n                variant.py = py\n            }\n        }\n    }\n\n    paintAxis(ctx, pixelWidth, pixelHeight) {\n\n        IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n        var font = {\n            'font': 'normal 10px Arial',\n            'textAlign': 'right',\n            'strokeStyle': \"black\"\n        }\n\n        const yScale = (this.dataRange.max - this.dataRange.min) / pixelHeight\n        if (this.posteriorProbability) {\n            const n = 0.1\n            for (let p = this.dataRange.min; p < this.dataRange.max; p += n) {\n                const yp = pixelHeight - Math.round((p - this.dataRange.min) / yScale)\n                IGVGraphics.strokeLine(ctx, 45, yp - 2, 50, yp - 2, font) // Offset dashes up by 2 pixel\n                IGVGraphics.fillText(ctx, p.toFixed(1), 44, yp + 2, font) // Offset numbers down by 2 pixels;\n            }\n        } else {\n            const n = Math.ceil((this.dataRange.max - this.dataRange.min) * 10 / pixelHeight)\n            for (let p = this.dataRange.min; p < this.dataRange.max; p += n) {\n                const yp = pixelHeight - Math.round((p - this.dataRange.min) / yScale)\n                IGVGraphics.strokeLine(ctx, 45, yp, 50, yp, font) // Offset dashes up by 2 pixel\n                IGVGraphics.fillText(ctx, Math.floor(p), 44, yp + 4, font) // Offset numbers down by 2 pixels;\n            }\n        }\n\n        font['textAlign'] = 'center'\n        if (this.posteriorProbability) {\n            IGVGraphics.fillText(ctx, \"PPA\", pixelWidth / 2, pixelHeight / 2, font, {rotate: {angle: -90}})\n        } else {\n            IGVGraphics.fillText(ctx, \"-log10(pvalue)\", pixelWidth / 2, pixelHeight / 2, font, {rotate: {angle: -90}})\n        }\n    }\n\n    popupData(clickState, features) {\n\n        if (features === undefined) features = clickState.viewport.cachedFeatures\n\n        let data = []\n        const track = clickState.viewport.trackView.track\n\n        if (features) {\n            let count = 0\n            for (let f of features) {\n                const xDelta = Math.abs(clickState.canvasX - f.px)\n                const yDelta = Math.abs(clickState.canvasY - f.py)\n                const value = f[this.valueProperty]\n                if (xDelta < this.dotSize && yDelta < this.dotSize) {\n                    if (count > 0) {\n                        data.push(\"<HR/>\")\n                    }\n                    if (count == 5) {\n                        data.push(\"...\")\n                        break\n                    }\n                    if (typeof f.popupData === 'function') {\n                        data = data.concat(f.popupData())\n                    } else {\n                        const chr = f.realChr || f.chr\n                        const pos = (f.realStart || f.start) + 1\n                        data.push({name: 'chromosome', value: chr})\n                        data.push({name: 'position', value: pos})\n                        data.push({name: 'name', value: f.name})\n                        if (track.posteriorProbability) {\n                            data.push({name: 'posterior probability', value: value})\n                        } else {\n                            data.push({name: 'pValue', value: value})\n                        }\n                    }\n                    count++\n                }\n            }\n        }\n\n        return data\n    }\n\n    menuItemList() {\n        return MenuUtils.numericDataMenuItems(this.trackView)\n    }\n\n    doAutoscale(featureList) {\n\n        if (featureList.length > 0) {\n            // posterior probabilities are treated without modification, but we need to take a negative logarithm of P values\n            const valueProperty = this.valueProperty\n            const posterior = this.posteriorProbability\n            const features =\n                featureList.map(function (feature) {\n                    const v = feature[valueProperty]\n                    return {value: posterior ? v : -Math.log(v) / Math.LN10}\n                })\n            this.dataRange = doAutoscale(features)\n\n        } else {\n            // No features -- pick something reasonable for PPAs and p-values\n            if (this.posteriorProbability) {\n                this.dataRange = {min: this.config.min || 0, max: this.config.max || 1}\n            } else {\n                this.dataRange = {min: this.config.max || 25, max: this.config.min || 0}\n            }\n        }\n\n        return this.dataRange\n    }\n\n}\n\nexport default GWASTrack\n\n","import FeatureSource from '../feature/featureSource.js'\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport {isSimpleType} from \"../util/igvUtils.js\"\nimport paintAxis from \"../util/paintAxis.js\"\nimport MenuUtils from \"../ui/menuUtils.js\"\nimport {StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst X_PIXEL_DIFF_THRESHOLD = 1\n\nclass GCNVTrack extends TrackBase {\n\n    constructor(config, browser) {\n        super(config, browser)\n    }\n\n    init(config) {\n        super.init(config)\n\n        this.autoscale = config.autoscale || config.max === undefined\n        this.dataRange = {\n            min: config.min || 0,\n            max: config.max\n        }\n\n        this.windowFunction = config.windowFunction || \"mean\"\n        this.paintAxis = paintAxis\n        this.graphType = config.graphType || \"bar\"\n\n        //hack to avoid creating feature source multiple times.  If config.type is not set the file must be read\n        //to determine type, which results in creation of a feature source.\n        if (config._featureSource) {\n            this.featureSource = config._featureSource\n            delete config._featureSource\n        } else {\n            this.featureSource = FeatureSource(this.config, this.browser.genome)\n        }\n\n        // Visibility window hardcoded to -1  (== whole chromosome).  Draw method needs feature beyond current view,\n        // when/if this is resolved visibilityWindow can be used.\n        this.visibilityWindow = -1\n        this.featureSource.visibilityWindow = this.visibilityWindow\n    }\n\n    async postInit() {\n\n        if (typeof this.featureSource.getHeader === \"function\") {\n            this.header = await this.featureSource.getHeader()\n            if(this.disposed) return;   // This track was removed during async load\n            this.sampleNames = this.header.columnNames.slice(3)\n\n            // Set generic properties from track line\n            this.setTrackProperties(this.header)   // setTrackProperties defined in TrackBase\n\n            // set option to highlight sample track line on click\n            if (this.header.hasOwnProperty(\"clickToHighlight\")) {\n                let colour = this.header[\"clickToHighlight\"]\n                this.config.clickToHighlight = colour\n                this.config.samplesClickedToHighlight = {}\n            }\n\n            // Special track line properties\n            if (this.header.hasOwnProperty(\"highlight\")) {\n                this.config.highlightSamples = {}\n                let v = this.header[\"highlight\"]\n                if (!Array.isArray(v)) v = [v]\n                for (let h of v) {\n                    const tokens = h.split(\";\")\n                    if (tokens.length === 2) {\n                        this.config.highlightSamples[tokens[0]] = tokens[1]\n                    }\n\n                }\n            }\n        }\n    }\n\n    menuItemList() {\n        return MenuUtils.numericDataMenuItems(this.trackView)\n    }\n\n    async getFeatures(chr, start, end) {\n        const chrFeatures = await this.featureSource.getFeatures({\n            chr,\n            start: 0,\n            end: Number.MAX_SAFE_INTEGER,\n            visibilityWindow: this.visibilityWindow\n        })\n        let prevIndex = undefined\n        let nextIndex = undefined\n        for (let i = 1; i < chrFeatures.length - 1; i++) {\n            if (prevIndex === undefined && chrFeatures[i].end > start) {\n                prevIndex = i - 1\n            }\n            if (nextIndex === undefined && chrFeatures[i].start > end) {\n                nextIndex = i + 1\n                break\n            }\n        }\n        if (prevIndex === undefined) prevIndex = 0\n        if (nextIndex === undefined) nextIndex = chrFeatures.length\n        return chrFeatures.slice(prevIndex, nextIndex)\n    }\n\n    draw(options) {\n\n        const {features, context, bpPerPixel, bpStart, pixelWidth, pixelHeight} = options\n\n        ///let baselineColor;\n        //if (typeof self.color === \"string\" && self.color.startsWith(\"rgb(\")) {\n        //    baselineColor = IGVColor.addAlpha(self.color, 0.1);\n        //}\n\n        const yScale = (yValue) => {\n            return ((this.dataRange.max - yValue) / (this.dataRange.max - this.dataRange.min)) * pixelHeight\n        }\n\n        const getX = function (bpPosition) {\n            let x = Math.floor((bpPosition - bpStart) / bpPerPixel)\n            if (isNaN(x)) console.warn('isNaN(x). feature start ' + StringUtils.numberFormatter(bpPosition) +\n                ' bp start ' + StringUtils.numberFormatter(bpStart))\n            return x\n        }\n\n        const drawGuideLines = (options) => {\n            if (this.config.hasOwnProperty('guideLines')) {\n                for (let line of this.config.guideLines) {\n                    if (line.hasOwnProperty('color') && line.hasOwnProperty('y') && line.hasOwnProperty('dotted')) {\n                        let y = yScale(line.y)\n                        let props = {\n                            'strokeStyle': line['color'],\n                            'strokeWidth': 2\n                        }\n                        if (line['dotted']) IGVGraphics.dashedLine(options.context, 0, y, options.pixelWidth, y, 5, props)\n                        else IGVGraphics.strokeLine(options.context, 0, y, options.pixelWidth, y, props)\n                    }\n                }\n            }\n        }\n\n        if (features && features.length > 0) {\n\n            if (this.dataRange.min === undefined) this.dataRange.min = 0\n\n            // Max can be less than min if config.min is set but max left to autoscale. If that's the case there is\n            // nothing to paint.\n            if (this.dataRange.max > this.dataRange.min) {\n                const highlightSamples = this.config.highlightSamples\n                const onlyHandleClicksForHighlightedSamples = this.config.onlyHandleClicksForHighlightedSamples\n                const clickToHighlight = this.config.clickToHighlight\n\n                let previousEnd = -1\n                let previousValues = {}\n\n                let highlightConnectorLines = []\n                let highlightFeatureLines = []\n\n                // clickDetectorCache allows fast retrieval of whether a mouse click hits a rendered line segment\n                // by storing lists of rendered line segments, keyed by their right x coordinate in canvas pixel space.\n                // this cache is regenerated on every draw.\n                this.clickDetectorCache = {}\n\n                for (let feature of features) {\n                    const x1 = getX(feature.start)\n                    const x2 = getX(feature.end)\n                    const previousX = previousEnd >= 0 ? getX(previousEnd) : x1\n\n                    if (isNaN(x1) || isNaN(x2)) continue\n                    // if ((x1 - previousX < X_PIXEL_DIFF_THRESHOLD) && (x2 - x1 < X_PIXEL_DIFF_THRESHOLD)) continue;\n\n                    this.clickDetectorCache[x1] = []\n                    this.clickDetectorCache[x2] = []\n                    for (let i = 0; i < feature.values.length; i++) {\n                        const sampleName = this.sampleNames[i]\n                        const value = feature.values[i]\n                        const y = yScale(value)\n                        if (x1 - previousX >= X_PIXEL_DIFF_THRESHOLD) {\n                            const previousValue = previousValues[sampleName]\n                            const previousY = yScale(previousValue)\n                            const highlightColor = highlightSamples && highlightSamples[sampleName]\n\n\n                            if (highlightColor) {\n                                highlightConnectorLines.push([previousX, previousY, x1, y, highlightColor])\n                            } else if (clickToHighlight && sampleName in this.config.samplesClickedToHighlight) {\n                                highlightConnectorLines.push([previousX, previousY, x1, y, this.config.samplesClickedToHighlight[sampleName]])\n                            } else {\n                                IGVGraphics.strokeLine(context, previousX, previousY, x1, y, {strokeStyle: '#D9D9D9'})\n                            }\n                            if (!onlyHandleClicksForHighlightedSamples || sampleName in highlightSamples) {\n                                this.clickDetectorCache[x1].push([previousX, previousY, x1, y, sampleName, highlightColor || 'gray'])\n                            }\n                        }\n\n                        if (x2 - x1 >= X_PIXEL_DIFF_THRESHOLD) {\n                            const highlightColor = highlightSamples && highlightSamples[sampleName]\n                            if (highlightColor) {\n                                highlightFeatureLines.push([x1, y, x2, y, highlightColor])\n                            } else if (clickToHighlight && sampleName in this.config.samplesClickedToHighlight) {\n                                highlightFeatureLines.push([x1, y, x2, y, this.config.samplesClickedToHighlight[sampleName]])\n                            } else {\n                                IGVGraphics.strokeLine(context, x1, y, x2, y, {strokeStyle: 'gray'})\n                            }\n                            if (!onlyHandleClicksForHighlightedSamples || sampleName in highlightSamples) {\n                                this.clickDetectorCache[x2].push([x1, y, x2, y, sampleName, highlightColor || 'gray'])\n                            }\n                        }\n\n                        previousValues[sampleName] = value\n\n                        //IGVGraphics.fillCircle(ctx, px, y, pointSize / 2, {\"fillStyle\": color, \"strokeStyle\": color});\n                        //IGVGraphics.fillRect(ctx, x, y, width, height, {fillStyle: color});\n                    }\n                    previousEnd = feature.end\n                }\n\n                for (let f of highlightConnectorLines) {\n                    IGVGraphics.strokeLine(context, f[0], f[1], f[2], f[3], {strokeStyle: f[4], lineWidth: 1.3})\n                }\n                for (let f of highlightFeatureLines) {\n                    IGVGraphics.strokeLine(context, f[0], f[1], f[2], f[3], {strokeStyle: f[4], lineWidth: 2})\n                }\n\n                /*\n                // If the track includes negative values draw a baseline\n                if (this.dataRange.min < 0) {\n                    const basepx = (self.dataRange.max / (this.dataRange.max - this.dataRange.min)) * options.pixelHeight;\n                    IGVGraphics.strokeLine(context, 0, basepx, options.pixelWidth, basepx, {strokeStyle: baselineColor});\n                }\n                */\n            }\n        }\n\n        drawGuideLines(options)\n    }\n\n    doAutoscale(features) {\n\n        let min, max\n        if (features.length > 0) {\n            min = Number.MAX_VALUE\n            max = -Number.MAX_VALUE\n\n            features.forEach(function (feature) {\n                min = Math.min(min, ...feature.values)\n                max = Math.max(max, ...feature.values)\n            })\n\n            min -= 0.01\n            max += 0.01\n        } else {\n            // No features -- default\n            min = 0\n            max = 100\n        }\n\n        return {min: min, max: max}\n    }\n\n    clickedFeatures(clickState) {\n        //console.warn('click', clickState.canvasX, clickState.canvasY, clickState)\n\n        const BOUNDING_BOX_PADDING = 10\n        const MIN_DISTANCE_TO_SEGMENT = 5\n\n        const clickX = clickState.canvasX\n        const clickY = clickState.canvasY\n\n        let key = null\n        for (key of Object.keys(this.clickDetectorCache)) {\n            key = parseInt(key)\n            if (key >= clickX) {\n                break\n            }\n        }\n\n\n        if (key) {\n            let closestDistanceSoFar = Number.MAX_VALUE\n            let closestResult = []\n            const segments = this.clickDetectorCache[key]\n            for (let segment of segments) {\n                const x1 = segment[0]\n                const x2 = segment[2]\n                if (clickX < x1 || clickX > x2) return []\n\n                const y1 = segment[1]\n                const y2 = segment[3]\n\n                if ((clickY < Math.min(y1, y2) - BOUNDING_BOX_PADDING) || (clickY > Math.max(y1, y2) + BOUNDING_BOX_PADDING)) continue\n\n                const distance = distanceToLine(clickX, clickY, x1, y1, x2, y2)\n                if (distance < closestDistanceSoFar) {\n                    closestResult = [{'name': segment[4], 'color': segment[5]}]\n                    closestDistanceSoFar = distance\n                    //console.warn('closest:', 'name', segment[4], 'color', segment[5], distance);\n                }\n            }\n\n            if (closestDistanceSoFar < MIN_DISTANCE_TO_SEGMENT) {\n                // clickToHighlight set, add sample to dict of clicked lines\n                if (this.config.clickToHighlight) {\n                    if (closestResult[0]['name'] in this.config.samplesClickedToHighlight) {\n                        // clicked sample already highlighted => remove if clicked again\n                        delete this.config.samplesClickedToHighlight[closestResult[0]['name']]\n                    } else if (this.config.clickToHighlight === 'any') {\n                        var colourList = [\n                            'red', 'darkblue', 'green', 'teal', 'olivedrab',\n                            'orange', 'maroon', 'purple', 'blue', 'gold',\n                        ]\n                        var colour = colourList[Math.floor(Math.random() * (colourList.length + 1))]\n                        this.config.samplesClickedToHighlight[closestResult[0]['name']] = colour\n                    } else {\n                        this.config.samplesClickedToHighlight[closestResult[0]['name']] = this.config.clickToHighlight\n                    }\n                    this.trackView.repaintViews()  // prompt redraw to change colour of clicked sample\n                }\n                return closestResult\n            }\n        }\n\n        return []\n    }\n\n    popupData(clickState, features) {\n\n        if(features === undefined) features = this.clickedFeatures(clickState)\n\n        const items = []\n        features.forEach(function (f) {\n            for (let property of Object.keys(f)) {\n                if (isSimpleType(f[property])) {\n                    items.push({name: property, value: f[property]})\n                }\n            }\n        })\n\n        return items\n    }\n\n    get supportsWholeGenome() {\n        return false\n    }\n}\n\n\nfunction distanceToLine(x, y, ax, ay, bx, by) {\n    /*\n        Finds distance between point (x, y) and line defined by points (ax, ay) (bx, by)\n        based on http://mathworld.wolfram.com/Point-LineDistance2-Dimensional.html\n    */\n\n    const bx_minus_ax = bx - ax\n    const by_minus_ay = by - ay\n    const v = Math.abs(bx_minus_ax * (ay - y) - (ax - x) * by_minus_ay)\n    const r = Math.sqrt(bx_minus_ax * bx_minus_ax + by_minus_ay * by_minus_ay)\n\n    const distance = r > 0 ? v / r : 0\n    //console.warn('Check if', x, y, 'is within', ax, ay, bx, by, '. Distance from line: ', distance);\n\n    return distance\n}\n\nexport default GCNVTrack\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport getDataWrapper from \"../feature/dataWrapper.js\"\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport {FeatureCache, igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\nimport TextFeatureSource from \"../feature/textFeatureSource.js\"\n\nclass RnaStructTrack extends TrackBase {\n\n    constructor(config, browser) {\n\n        super(config, browser)\n\n        // Set defaults\n        if (!config.height) {\n            this.height = 300\n        }\n\n        this.arcOrientation = false\n\n        this.theta = Math.PI / 2\n\n        if (\"bp\" === config.format) {\n            this.featureSource = new RNAFeatureSource(config, browser.genome)\n        } else {\n            this.featureSource = new TextFeatureSource(config, browser.genome)\n        }\n    }\n\n    async getFeatures(chr, start, end) {\n        const visibilityWindow = this.visibilityWindow\n        return this.featureSource.getFeatures({chr, start, end, visibilityWindow})\n    }\n\n    draw(options) {\n\n        const ctx = options.context\n\n        const theta = Math.PI / 2\n        const pixelWidth = options.pixelWidth\n        const pixelHeight = options.pixelHeight\n        const viewportWidth = options.viewportWidth\n        const bpPerPixel = options.bpPerPixel\n        const bpStart = options.bpStart\n        const xScale = bpPerPixel\n        const orienation = this.arcOrientation\n\n        IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n\n        const featureList = options.features\n\n        if (featureList) {\n\n            // Sort by score -- draw lowest scored features first\n            sortByScore(featureList, 1)\n\n            for (let feature of featureList) {\n\n                if (feature.startLeft) {\n\n                    let sl = Math.round((feature.startLeft - bpStart) / xScale)\n                    let sr = Math.round((feature.startRight - bpStart) / xScale)\n                    let el = Math.round((feature.endLeft - bpStart) / xScale)\n                    let er = Math.round((feature.endRight - bpStart) / xScale)\n\n                    ctx.fillStyle = feature.color\n                    ctx.strokeStyle = feature.color\n                    ctx.beginPath()\n\n                    // First arc\n                    let x1 = (sl + er) / 2\n                    let r1 = (er - sl) / 2\n                    let y1 = this.height\n                    let sa = Math.PI + (Math.PI / 2 - theta)\n                    let ea = 2 * Math.PI - (Math.PI / 2 - theta)\n\n                    if (orienation) {\n                        y1 = 0\n                        ctx.arc(x1, y1, r1, ea, sa)\n                        ctx.lineTo(er, y1)\n                    } else {\n                        ctx.arc(x1, y1, r1, sa, ea)\n                        ctx.lineTo(el, y1)\n                    }\n\n                    // Second arc\n                    const x2 = (sr + el) / 2\n                    const r2 = (el - sr) / 2\n                    const y2 = y1                        // Only for theta == pi/2\n\n                    if (orienation) {\n                        ctx.arc(x2, y2, r2, sa, ea, true)\n                        ctx.lineTo(el, y2)\n                    } else {\n                        ctx.arc(x2, y2, r2, ea, sa, true)\n                        ctx.lineTo(sl, y2)\n                    }\n\n                    ctx.stroke()\n                    ctx.fill()\n\n                    feature.drawState = {x1: x1, y1: y1, r1: r1, x2: x2, y2: y2, r2: r2, sa: sa, ea: ea}\n                } else {\n                    let s = Math.round((feature.start - bpStart) / xScale)\n                    let e = Math.round((feature.end - bpStart) / xScale)\n\n                    ctx.strokeStyle = feature.color\n\n                    ctx.beginPath()\n\n                    // First arc\n                    let x = (s + e) / 2\n                    let r = (e - s) / 2\n                    let y = this.height\n                    let sa = Math.PI + (Math.PI / 2 - theta)\n                    let ea = 2 * Math.PI - (Math.PI / 2 - theta)\n\n                    if (orienation) {\n                        y = 0\n                        ctx.arc(x, y, r, ea, sa)\n                    } else {\n                        ctx.arc(x, y, r, sa, ea)\n                    }\n\n                    ctx.stroke()\n\n                    feature.drawState = {x1: x, y1: y, r1: r, sa: sa, ea: ea}\n\n                }\n\n            }\n        }\n    }\n\n    clickedFeatures(clickState) {\n\n        const features = super.clickedFeatures(clickState)\n\n        const clicked = []\n\n        // Sort by score in descending order   (opposite order than drawn)\n        sortByScore(features, -1)\n\n        for (let f of features) {\n            const ds = f.drawState\n\n            // Distance from arc radius, or outer arc for type \".bp\"\n            const dx1 = (clickState.canvasX - ds.x1)\n            const dy1 = (clickState.canvasY - ds.y1)\n            const d1 = Math.sqrt(dx1 * dx1 + dy1 * dy1)\n            const outerLim = ds.r1 + 3\n\n\n            let d2\n            let innerLim\n            if (ds.x2 === undefined) {\n                d2 = d1\n                innerLim = ds.r1 - 3\n\n            } else {\n                const dx2 = (clickState.canvasX - ds.x2)\n                const dy2 = (clickState.canvasY - ds.y2)\n                d2 = Math.sqrt(dx2 * dx2 + dy2 * dy2)\n                innerLim = ds.r2 - 3\n            }\n\n\n            // Between outer and inner arcs, with some tolerance\n            if (d1 < outerLim && d2 > innerLim) {\n                clicked.push(f)\n                break\n            }\n        }\n        return clicked\n    }\n\n    popupData(clickState, features) {\n\n        if(features === undefined) features = this.clickedFeatures(clickState)\n\n        if (features && features.length > 0) {\n\n            return this.extractPopupData(features[0], this.getGenomeId())\n\n        }\n    }\n\n    menuItemList() {\n\n        var self = this\n\n        return [\n            {\n                name: \"Toggle arc direction\",\n                click: function () {\n                    self.arcOrientation = !self.arcOrientation\n                    self.trackView.repaintViews()\n                }\n            }\n        ]\n\n    };\n\n\n}\n\nfunction sortByScore(featureList, direction) {\n\n    featureList.sort(function (a, b) {\n        const s1 = a.score === undefined ? -Number.MAX_VALUE : a.score\n        const s2 = b.score === undefined ? -Number.MAX_VALUE : b.score\n        const t = s1 - s2\n        const d = direction === undefined ? 1 : direction\n\n        return d * (s1 - s2)\n    })\n}\n\n\nclass RNAFeatureSource {\n\n    constructor(config, genome) {\n        this.config = config\n        this.genome = genome\n    }\n\n    async getFeatures({chr, start, end, bpPerPixel, visibilityWindow}) {\n\n\n        const genome = this.genome\n\n        if (!this.featureCache) {\n\n            const options = buildOptions(this.config)\n\n            const data = await igvxhr.loadString(this.config.url, options)\n\n            this.featureCache = new FeatureCache(parseBP(data), genome)\n\n            return this.featureCache.queryFeatures(chr, start, end)\n\n        } else {\n            return this.featureCache.queryFeatures(chr, start, end)\n        }\n\n        function parseBP(data) {\n\n            if (!data) return null\n\n            const dataWrapper = getDataWrapper(data)\n\n            let header = true\n            let line\n            const colors = []\n            const descriptors = []\n            const features = []\n\n            while ((line = dataWrapper.nextLine()) !== undefined) {\n\n                const tokens = line.split('\\t')\n\n                if (header && line.startsWith(\"color:\")) {\n                    const color = \"rgb(\" + tokens[1] + \",\" + tokens[2] + \",\" + tokens[3] + \")\"\n                    colors.push(color)\n                    if (tokens.length > 4) {\n                        descriptors.push(tokens[4])\n                    }\n                    // TODO - use label\n                } else {\n                    header = false\n\n                    const chr = tokens[0]\n                    const startLeftNuc = Number.parseInt(tokens[1]) - 1\n                    const startRightNuc = Number.parseInt(tokens[2]) - 1\n                    const endLeftNuc = Number.parseInt(tokens[3])\n                    const endRightNuc = Number.parseInt(tokens[4])\n                    var colorIdx = Number.parseInt(tokens[5])\n                    const color = colors[colorIdx]\n\n\n                    let feature\n                    if (startLeftNuc <= endRightNuc) {\n                        feature = {\n                            chr: chr,\n                            startLeft: Math.min(startLeftNuc, startRightNuc),\n                            startRight: Math.max(startLeftNuc, startRightNuc),\n                            endLeft: Math.min(endLeftNuc, endRightNuc),\n                            endRight: Math.max(endLeftNuc, endRightNuc),\n                            color: color,\n                            score: colorIdx\n                        }\n                    } else {\n                        feature = {\n                            chr: chr,\n                            startLeft: Math.min(endLeftNuc, endRightNuc),\n                            startRight: Math.max(endLeftNuc, endRightNuc),\n                            endLeft: Math.min(startLeftNuc, startRightNuc),\n                            endRight: Math.max(startLeftNuc, startRightNuc),\n                            color: color,\n                            score: colorIdx\n                        }\n                    }\n\n                    feature.start = feature.startLeft\n                    feature.end = feature.endRight\n\n                    if (descriptors.length > colorIdx) {\n                        feature.description = descriptors[colorIdx]\n                    }\n\n                    features.push(feature)\n                }\n            }\n\n            return features\n        }\n    }\n}\n\nexport default RnaStructTrack","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport IGVGraphics from \"./igv-canvas.js\"\nimport {IGVColor} from \"../node_modules/igv-utils/src/index.js\"\n\n/**\n * Class represents an ideogram of a chromsome cytobands.  It is used for the header of a track panel.\n *\n */\nclass IdeogramTrack {\n    constructor(browser) {\n        this.browser = browser\n        this.type = 'ideogram'\n        this.height = 16\n        this.order = Number.MIN_SAFE_INTEGER\n        this.disableButtons = true\n        this.ignoreTrackMenu = true\n    }\n\n    async getFeatures(chr, start, end) {\n        return []\n    }\n\n    computePixelHeight(ignore) {\n        return this.height\n    }\n\n    draw({context, referenceFrame, pixelWidth, pixelHeight}) {\n\n        const chr = referenceFrame.chr\n        const chromosome = referenceFrame.genome.getChromosome(chr)\n\n        if (undefined === chromosome || pixelWidth <= 0 || pixelHeight <= 0 || 'all' === chr.toLowerCase()) {\n            return\n        }\n\n        const stainColors = []\n\n        drawIdeogram({\n            ctx: context,\n            chr,\n            referenceFrame,\n            genome: referenceFrame.genome,\n            width: pixelWidth,\n            height: pixelHeight,\n            stainColors\n        })\n\n        const widthBP = Math.round(referenceFrame.bpPerPixel * pixelWidth)\n        const xBP = referenceFrame.start\n\n        // Total chromosome length can be > chromosome.bpLength for partial fastas.\n        let chrLength = chromosome.bpLength\n        const cytobands = referenceFrame.genome.getCytobands(chr)\n        if (cytobands && cytobands.length > 0 && cytobands[cytobands.length - 1].end) {\n            chrLength = Math.max(chrLength, cytobands[cytobands.length - 1].end)\n            chromosome.bpLength = chrLength   // Correct bp length, bit of a hack\n        }\n\n        if (widthBP < chrLength) {\n\n            const percentWidth = widthBP / chrLength\n            const percentX = xBP / chrLength\n\n            let x = Math.floor(percentX * pixelWidth)\n            let ww = Math.floor(percentWidth * pixelWidth)\n\n            x = Math.max(0, x)\n            x = Math.min(pixelWidth - ww, x)\n\n            // Push current context\n            context.save()\n\n            // Draw red box\n            context.strokeStyle = \"red\"\n            context.lineWidth = (ww < 2) ? 1 : 2\n\n            const xx = x + (context.lineWidth) / 2\n            ww = (ww < 2) ? 1 : ww - context.lineWidth\n\n            const yy = context.lineWidth / 2\n            const hh = pixelHeight - context.lineWidth\n\n            context.strokeRect(xx, yy, ww, hh)\n\n            // Pop current context\n            context.restore()\n        }\n\n    }\n\n    dispose() {\n        this.trackView = undefined\n    }\n}\n\nfunction drawIdeogram({ctx, chr, referenceFrame, genome, width, height, stainColors}) {\n\n    const shim = 1\n    const shim2 = 0.5 * shim\n    const ideogramTop = 0\n\n    if (undefined === genome) {\n        return\n    }\n\n    IGVGraphics.fillRect(ctx, 0, 0, width, height, {fillStyle: IGVColor.greyScale(255)})\n\n    const cytobands = genome.getCytobands(chr)\n    if (cytobands) {\n\n        const center = (ideogramTop + height / 2)\n\n        const xC = []\n        const yC = []\n\n        if (0 === cytobands.length) {\n            return\n        }\n\n        // Get chrLength from the cytobands -- chromsome.bpLength might not work for igv-reports fasta files, which\n        // contain only a portion of the chromosome sequence\n        // *DOESNT WORK* const chrLength = referenceFrame.genome.getChromosome(chr).bpLength;\n\n        const chrLength = cytobands[cytobands.length - 1].end\n        const scale = width / chrLength\n\n        // round rect clipping path\n        ctx.beginPath()\n        IGVGraphics.roundRect(ctx, shim2, shim2 + ideogramTop, width - 2 * shim2, height - 2 * shim2, (height - 2 * shim2) / 2, 0, 1)\n        ctx.clip()\n\n        for (let i = 0; i < cytobands.length; i++) {\n\n            const cytoband = cytobands[i]\n            const start = scale * cytoband.start\n            const end = scale * cytoband.end\n\n            if (cytoband.type === 'c') {\n\n                if (cytoband.name.charAt(0) === 'p') {\n                    xC[0] = start\n                    yC[0] = height + ideogramTop\n                    xC[1] = start\n                    yC[1] = ideogramTop\n                    xC[2] = end\n                    yC[2] = center\n                } else {\n                    xC[0] = end\n                    yC[0] = height + ideogramTop\n                    xC[1] = end\n                    yC[1] = ideogramTop\n                    xC[2] = start\n                    yC[2] = center\n                }\n\n                ctx.fillStyle = \"rgb(150, 0, 0)\"\n                ctx.strokeStyle = \"rgb(150, 0, 0)\"\n                IGVGraphics.polygon(ctx, xC, yC, 1, 0)\n            } else {\n\n                ctx.fillStyle = getCytobandColor(stainColors, cytoband)\n                IGVGraphics.fillRect(ctx, start, shim + ideogramTop, (end - start), height - 2 * shim)\n            }\n        }\n    }\n\n    // round rect border\n    ctx.strokeStyle = IGVColor.greyScale(41)\n    IGVGraphics.roundRect(ctx, shim2, shim2 + ideogramTop, width - 2 * shim2, height - 2 * shim2, (height - 2 * shim2) / 2, 0, 1)\n}\n\nfunction getCytobandColor(colors, data) {\n\n    if (data.type === 'c') { // centermere: \"acen\"\n        return \"rgb(150, 10, 10)\"\n    } else {\n        var stain = data.stain // + 4;\n\n        var shade = 230\n        if (data.type === 'p') {\n            shade = Math.floor(230 - stain / 100.0 * 230)\n        }\n        var c = colors[shade]\n        if (!c) {\n            c = \"rgb(\" + shade + \",\" + shade + \",\" + shade + \")\"\n            colors[shade] = c\n        }\n        return c\n\n    }\n}\n\nexport default IdeogramTrack\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport FeatureSource from './featureSource.js'\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport {PaletteColorTable} from \"../util/colorPalletes.js\"\n\nlet JUNCTION_MOTIF_PALETTE = new PaletteColorTable(\"Dark2\")\n\n// Lock in color-to-motif mapping so it's independent of data loading order. This list may not include all possible\n// motif values as this varies depending on the RNA-seq pipeline. The current list is based on STAR v2.4 docs.\nconst someMotifValues = ['GT/AG', 'CT/AC', 'GC/AG', 'CT/GC', 'AT/AC', 'GT/AT', 'non-canonical']\nsomeMotifValues.forEach(motif => {\n    JUNCTION_MOTIF_PALETTE.getColor(motif)\n})\n\n// rendering context with values that only need to be computed once per render, rather than for each splice junction\nconst junctionRenderingContext = {}\n\nclass SpliceJunctionTrack extends TrackBase {\n\n    constructor(config, browser) {\n        super(config, browser)\n    }\n\n\n    init(config) {\n\n        super.init(config)\n\n        this.type = config.type || 'junctions'\n\n        if (config._featureSource) {\n            this.featureSource = config._featureSource\n            delete config._featureSource\n        } else {\n            this.featureSource = config.featureSource ?\n                config.featureSource :\n                FeatureSource(config, this.browser.genome)\n        }\n\n        this.margin = config.margin === undefined ? 10 : config.margin\n\n        if (!this.height) {\n            this.height = 100\n        }\n\n        //set defaults\n        if (config.colorByNumReadsThreshold === undefined) {\n            config.colorByNumReadsThreshold = 5\n        }\n    }\n\n    async postInit() {\n\n        if (typeof this.featureSource.getHeader === \"function\") {\n            this.header = await this.featureSource.getHeader()\n            if (this.disposed) return   // This track was removed during async load\n        }\n\n        // Set properties from track line\n        if (this.header) {\n            this.setTrackProperties(this.header)\n        }\n\n        if (this.visibilityWindow === undefined && typeof this.featureSource.defaultVisibilityWindow === 'function') {\n            this.visibilityWindow = await this.featureSource.defaultVisibilityWindow()\n        }\n\n        return this\n\n    }\n\n    get supportsWholeGenome() {\n        return false\n    }\n\n    async getFeatures(chr, start, end, bpPerPixel) {\n        const visibilityWindow = this.visibilityWindow\n        return this.featureSource.getFeatures({chr, start, end, bpPerPixel, visibilityWindow})\n    };\n\n\n    /**\n     * The required height in pixels required for the track content.   This is not the visible track height, which\n     * can be smaller (with a scrollbar) or larger.\n     *\n     * @param features\n     * @returns {*}\n     */\n    computePixelHeight(features) {\n        return this.height\n    };\n\n    draw(options) {\n\n        const featureList = options.features\n        const ctx = options.context\n        const bpPerPixel = options.bpPerPixel\n        const bpStart = options.bpStart\n        const pixelWidth = options.pixelWidth\n        const pixelHeight = options.pixelHeight\n        const bpEnd = bpStart + pixelWidth * bpPerPixel + 1\n\n\n        if (!this.config.isMergedTrack) {\n            IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n        }\n\n        if (featureList) {\n\n\n            junctionRenderingContext.referenceFrame = options.viewport.referenceFrame\n            junctionRenderingContext.referenceFrameStart = junctionRenderingContext.referenceFrame.start\n            junctionRenderingContext.referenceFrameEnd = junctionRenderingContext.referenceFrameStart +\n                junctionRenderingContext.referenceFrame.toBP(options.viewport.getWidth())\n\n            // For a given viewport, records where features that are < 2px in width have been rendered already.\n            // This prevents wasteful rendering of multiple such features onto the same pixels.\n            junctionRenderingContext.featureZoomOutTracker = {}\n\n            for (let feature of featureList) {\n                if (feature.end < bpStart) continue\n                if (feature.start > bpEnd) break\n                this.renderJunction(feature, bpStart, bpPerPixel, pixelHeight, ctx)\n            }\n\n        } else {\n            console.log(\"No feature list\")\n        }\n\n    };\n\n    /**\n     *\n     * @param feature\n     * @param bpStart  genomic location of the left edge of the current canvas\n     * @param xScale  scale in base-pairs per pixel\n     * @param pixelHeight  pixel height of the current canvas\n     * @param ctx  the canvas 2d context\n     */\n    renderJunction(feature, bpStart, xScale, pixelHeight, ctx) {\n        // cache whether this junction is rendered or filtered out. Use later to exclude non-rendered junctions from click detection.\n        feature.isVisible = false\n\n        const junctionLeftPx = Math.round((feature.start - bpStart) / xScale)\n        const junctionRightPx = Math.round((feature.end - bpStart) / xScale)\n        const junctionMiddlePx = (junctionLeftPx + junctionRightPx) / 2\n        if (junctionRightPx - junctionLeftPx <= 3) {\n            if (junctionMiddlePx in junctionRenderingContext.featureZoomOutTracker) {\n                return\n            }\n            junctionRenderingContext.featureZoomOutTracker[junctionMiddlePx] = true\n        }\n\n        // TODO: cache filter and pixel calculations by doing them earlier when features are initially parsed?\n        if (this.config.hideAnnotatedJunctions && feature.attributes.annotated_junction === \"true\") {\n            return\n        }\n        if (this.config.hideUnannotatedJunctions && feature.attributes.annotated_junction === \"false\") {\n            return\n        }\n        if (this.config.hideMotifs && this.config.hideMotifs.includes(feature.attributes.motif)) {\n            return\n        }\n        if (this.config.hideStrand === feature.strand) {\n            return\n        }\n\n        // check if splice junction is inside viewport\n        if (this.config.minJunctionEndsVisible) {\n            let numJunctionEndsVisible = 0\n            if (feature.start >= junctionRenderingContext.referenceFrameStart && feature.start <= junctionRenderingContext.referenceFrameEnd) {\n                numJunctionEndsVisible += 1\n            }\n            if (feature.end >= junctionRenderingContext.referenceFrameStart && feature.end <= junctionRenderingContext.referenceFrameEnd) {\n                numJunctionEndsVisible += 1\n            }\n            if (numJunctionEndsVisible < this.config.minJunctionEndsVisible) {\n                return\n            }\n        }\n\n        let uniquelyMappedReadCount\n        let multiMappedReadCount\n        let totalReadCount\n        if (feature.attributes.uniquely_mapped) {\n            uniquelyMappedReadCount = parseInt(feature.attributes.uniquely_mapped)\n            if (uniquelyMappedReadCount < this.config.minUniquelyMappedReads) {\n                return\n            }\n            multiMappedReadCount = parseInt(feature.attributes.multi_mapped)\n            totalReadCount = uniquelyMappedReadCount + multiMappedReadCount\n            if (totalReadCount < this.config.minTotalReads) {\n                return\n            }\n            if (totalReadCount > 0 && multiMappedReadCount / totalReadCount > this.config.maxFractionMultiMappedReads) {\n                return\n            }\n            if (feature.attributes.maximum_spliced_alignment_overhang && parseInt(feature.attributes.maximum_spliced_alignment_overhang) < this.config.minSplicedAlignmentOverhang) {\n                return\n            }\n        }\n\n        let numSamplesWithThisJunction\n        if (feature.attributes.num_samples_with_this_junction) {\n            numSamplesWithThisJunction = parseInt(feature.attributes.num_samples_with_this_junction)\n            if (this.config.minSamplesWithThisJunction && numSamplesWithThisJunction < this.config.minSamplesWithThisJunction) {\n                return\n            }\n            if (this.config.maxSamplesWithThisJunction && numSamplesWithThisJunction > this.config.maxSamplesWithThisJunction) {\n                return\n            }\n            if (feature.attributes.num_samples_total) {\n                feature.attributes.percent_samples_with_this_junction = 100 * numSamplesWithThisJunction / Number(feature.attributes.num_samples_total)\n                if (this.config.minPercentSamplesWithThisJunction) {\n                    if (feature.attributes.percent_samples_with_this_junction < this.config.minPercentSamplesWithThisJunction ||\n                        feature.attributes.percent_samples_with_this_junction > this.config.maxPercentSamplesWithThisJunction) {\n                        return\n                    }\n                }\n            }\n        }\n\n        const py = this.margin\n        const rowHeight = this.height\n\n        const cy = py + 0.5 * rowHeight\n        let topY = py\n        const bottomY = py + rowHeight\n        const bezierBottomY = bottomY - 10\n\n        // draw the junction arc\n        const bezierControlLeftPx = (junctionLeftPx + junctionMiddlePx) / 2\n        const bezierControlRightPx = (junctionMiddlePx + junctionRightPx) / 2\n\n        let lineWidth = 1\n        if (feature.attributes.line_width) {\n            lineWidth = Number(feature.attributes.line_width)\n        } else {\n            if (this.config.thicknessBasedOn === undefined || this.config.thicknessBasedOn === 'numUniqueReads') {\n                lineWidth = uniquelyMappedReadCount\n            } else if (this.config.thicknessBasedOn === 'numReads') {\n                lineWidth = totalReadCount\n            } else if (this.config.thicknessBasedOn === 'numSamplesWithThisJunction') {\n                if (numSamplesWithThisJunction !== undefined) {\n                    lineWidth = numSamplesWithThisJunction\n                }\n            }\n            lineWidth = 1 + Math.log(lineWidth + 1) / Math.log(12)\n        }\n\n        let bounceHeight\n        if (this.config.bounceHeightBasedOn === undefined || this.config.bounceHeightBasedOn === 'random') {\n            // randomly but deterministically stagger topY coordinates to reduce overlap\n            bounceHeight = (feature.start + feature.end) % 7\n        } else if (this.config.bounceHeightBasedOn === 'distance') {\n            bounceHeight = 6 * (feature.end - feature.start) / (junctionRenderingContext.referenceFrameEnd - junctionRenderingContext.referenceFrameStart)\n        } else if (this.config.bounceHeightBasedOn === 'thickness') {\n            bounceHeight = 2 * lineWidth\n        }\n        topY += rowHeight * Math.max(7 - bounceHeight, 0) / 10\n\n        let color\n        if (feature.attributes.color) {\n            color = feature.attributes.color  // Explicit setting\n        } else if (this.config.colorBy === undefined || this.config.colorBy === 'numUniqueReads') {\n            color = uniquelyMappedReadCount > this.config.colorByNumReadsThreshold ? 'blue' : '#AAAAAA'  // color gradient?\n        } else if (this.config.colorBy === 'numReads') {\n            color = totalReadCount > this.config.colorByNumReadsThreshold ? 'blue' : '#AAAAAA'\n        } else if (this.config.colorBy === 'isAnnotatedJunction') {\n            color = feature.attributes.annotated_junction === \"true\" ? '#b0b0ec' : 'orange'\n        } else if (this.config.colorBy === 'strand') {\n            color = feature.strand === \"+\" ? '#b0b0ec' : '#ecb0b0'\n        } else if (this.config.colorBy === 'motif') {\n            color = JUNCTION_MOTIF_PALETTE.getColor(feature.attributes.motif)\n        } else {\n            color = '#AAAAAA'\n        }\n\n        let label = \"\"\n        if (feature.attributes.label) {\n            label = feature.attributes.label.replace(/_/g, \" \")\n        } else if (this.config.labelWith === undefined || this.config.labelWith === 'uniqueReadCount') {\n            //default label\n            label = uniquelyMappedReadCount\n        } else if (this.config.labelWith === 'totalReadCount') {\n            label = totalReadCount\n        } else if (this.config.labelWith === 'numSamplesWithThisJunction') {\n            if (numSamplesWithThisJunction !== undefined) {\n                label = numSamplesWithThisJunction\n            }\n        } else if (this.config.labelWith === 'percentSamplesWithThisJunction') {\n            if (feature.attributes.percent_samples_with_this_junction !== undefined) {\n                label = feature.attributes.percent_samples_with_this_junction.toFixed(0) + '%'\n            }\n        } else if (this.config.labelWith === 'motif') {\n            if (feature.attributes.motif !== undefined) {\n                label += feature.attributes.motif\n            }\n        }\n\n        if (this.config.labelWithInParen === 'uniqueReadCount') {\n            label += ' (' + uniquelyMappedReadCount + ')'\n        } else if (this.config.labelWithInParen === 'totalReadCount') {\n            label += ' (' + totalReadCount + ')'\n        } else if (this.config.labelWithInParen === 'multiMappedReadCount') {\n            if (multiMappedReadCount > 0) {\n                label += ' (+' + multiMappedReadCount + ')'\n            }\n        } else if (this.config.labelWithInParen === 'numSamplesWithThisJunction') {\n            if (numSamplesWithThisJunction !== undefined) {\n                label += ' (' + numSamplesWithThisJunction + ')'\n            }\n        } else if (this.config.labelWithInParen === 'percentSamplesWithThisJunction') {\n            if (feature.attributes.percent_samples_with_this_junction !== undefined) {\n                label += ' (' + feature.attributes.percent_samples_with_this_junction.toFixed(0) + '%)'\n            }\n        } else if (this.config.labelWithInParen === 'motif') {\n            if (feature.attributes.motif !== undefined) {\n                label += ` ${feature.attributes.motif}`\n            }\n        }\n\n        // data source: STAR splice junctions (eg. SJ.out.tab file converted to bed).\n        // .bed \"name\" field used to store unique + multi-mapped read counts, so:\n        // feature.score:  unique spanning read counts\n        // feature.name:   unique + multi-mapped spanning read counts\n        //example feature:  { chr: \"chr17\", start: 39662344, end: 39662803, name: \"59\", row: 0, score: 38, strand: \"+\"}\n        feature.isVisible = true\n        ctx.beginPath()\n        ctx.moveTo(junctionLeftPx, bezierBottomY)\n        ctx.bezierCurveTo(bezierControlLeftPx, topY, bezierControlRightPx, topY, junctionRightPx, bezierBottomY)\n\n        ctx.lineWidth = lineWidth\n        ctx.strokeStyle = color\n        ctx.stroke()\n\n        const drawArrowhead = (ctx, x, y, size) => {\n            //TODO draw better arrow heads: https://stackoverflow.com/questions/21052972/curved-thick-arrows-on-canvas\n            ctx.beginPath()\n            ctx.moveTo(x, y)\n            ctx.lineTo(x - size / 2, y - size)\n            ctx.lineTo(x + size / 2, y - size)\n            ctx.lineTo(x, y)\n            ctx.closePath()\n            ctx.fill()\n        }\n\n        if (feature.attributes.left_shape || feature.attributes.right_shape) {\n            ctx.fillStyle = color\n            const arrowSize = ctx.lineWidth > 2 ? 10 : 7\n            if (feature.attributes.left_shape) {\n                drawArrowhead(ctx, junctionLeftPx, bezierBottomY, arrowSize)\n            }\n            if (feature.attributes.right_shape) {\n                drawArrowhead(ctx, junctionRightPx, bezierBottomY, arrowSize)\n            }\n        }\n\n        ctx.fillText(label, junctionMiddlePx - ctx.measureText(label).width / 2, (7 * topY + cy) / 8)\n    }\n\n    clickedFeatures(clickState) {\n\n        const allFeatures = super.clickedFeatures(clickState)\n\n        return allFeatures.filter(function (feature) {\n            return (feature.isVisible && feature.attributes)\n        })\n    }\n\n    /**\n     * Return \"popup data\" for feature @ genomic location.  Data is an array of key-value pairs\n     */\n    popupData(clickState, features) {\n\n        if (features === undefined) features = this.clickedFeatures(clickState)\n        const genomicLocation = clickState.genomicLocation\n\n        const data = []\n        for (let feature of features) {\n\n            const featureData = (typeof feature.popupData === \"function\") ?\n                feature.popupData(genomicLocation) :\n                this.extractPopupData(feature._f || feature, this.getGenomeId())\n\n            if (featureData) {\n                if (data.length > 0) {\n                    data.push(\"<hr/><hr/>\")\n                }\n\n                Array.prototype.push.apply(data, featureData)\n            }\n        }\n\n        return data\n    }\n\n    /**\n     * Called when the track is removed.  Do any needed cleanup here\n     */\n    dispose() {\n        this.trackView = undefined\n    }\n}\n\nexport default SpliceJunctionTrack\n","class RemoteFile {\n\n    constructor(args) {\n        this.config = args;\n        this.url = mapUrl(args.path || args.url);\n    }\n\n\n    async read(position, length) {\n\n        //console.log(`${position} - ${position + length} (${length})`)\n\n        const headers = this.config.headers || {};\n\n        if (position !== undefined && length) {\n            const rangeString = \"bytes=\" + position + \"-\" + (position + length - 1);\n            headers['Range'] = rangeString;\n        }\n\n        let url = this.url.slice();    // slice => copy\n        if (this.config.oauthToken) {\n            const token = resolveToken(this.config.oauthToken);\n            headers['Authorization'] = `Bearer ${token}`;\n        }\n\n        if (this.config.apiKey) {\n            url = addParameter(url, \"key\", this.config.apiKey);\n        }\n\n        const response = await fetch(url, {\n            method: 'GET',\n            headers: headers,\n            redirect: 'follow',\n            mode: 'cors',\n        });\n\n        const status = response.status;\n\n        if (status >= 400) {\n            const err = Error(response.statusText);\n            err.code = status;\n            throw err\n        } else {\n            return response.arrayBuffer()\n        }\n\n        /**\n         * token can be a string, a function that returns a string, or a function that returns a Promise for a string\n         * @param token\n         * @returns {Promise<*>}\n         */\n        async function resolveToken(token) {\n            if (typeof token === 'function') {\n                return await Promise.resolve(token())    // Normalize the result to a promise, since we don't know what the function returns\n            } else {\n                return token\n            }\n        }\n\n    }\n}\n\n\nfunction mapUrl(url) {\n\n    if (url.includes(\"//www.dropbox.com\")) {\n        return url.replace(\"//www.dropbox.com\", \"//dl.dropboxusercontent.com\")\n    } else if (url.startsWith(\"ftp://ftp.ncbi.nlm.nih.gov\")) {\n        return url.replace(\"ftp://\", \"https://\")\n    } else {\n        return url\n    }\n}\n\n\nfunction addParameter(url, name, value) {\n    const paramSeparator = url.includes(\"?\") ? \"&\" : \"?\";\n    return url + paramSeparator + name + \"=\" + value\n}\n\nclass BufferedFile {\n\n    constructor(args) {\n        this.file = args.file;\n        this.fetchSize = args.fetchSize || 16000;\n        this.maxSize = args.maxSize || 1000000;\n        this.buffers = [];\n    }\n\n    async read(position, length) {\n\n\n        let overlappingBuffers = this.buffers.filter( b => b.overlaps(position, position + length));\n\n        // See if any buffers completely contain request, if so we're done\n        for(let buffer of overlappingBuffers) {\n            if(buffer.contains(position, position + length)) {\n              return buffer.slice(position, position + length)\n            }\n        }\n\n\n        if(overlappingBuffers.length === 0) {\n\n            // No overlap with any existing buffer\n            let size = Math.max(length, this.fetchSize);\n\n            // Find index of first buffer to the right, if any, to potentially limit size\n            this.buffers.sort((a, b) => a.start - b.start);\n            const idx = binarySearch(this.buffers, (b) => b.start > position, 0);\n            if(idx < this.buffers.length) {\n                size = Math.min(size, this.buffers[idx].start - position);\n            }\n\n            const bufferStart = position;\n            const bufferData = await this.file.read(bufferStart, size);\n            const buffer = new Buffer(bufferStart, bufferData);\n            this.addBuffer(buffer);\n\n            return buffer.slice(position, position + length)\n        } else {\n\n            // console.log(\"Cache hit\")\n            // Some overlap.   Fill gaps\n            overlappingBuffers.sort((a, b) => a.start - b.start);\n            const allBuffers = [];\n            let currentEnd = position;\n            for (let ob of overlappingBuffers) {\n                if (currentEnd < ob.start) {\n                    const bufferStart = currentEnd;\n                    const bufferSize = ob.start - currentEnd;\n                    const bufferData = await this.file.read(bufferStart, bufferSize);\n                    const buffer = new Buffer(bufferStart, bufferData);\n                    allBuffers.push(buffer);\n                }\n                allBuffers.push(ob);\n                currentEnd = ob.end;\n            }\n\n            // Check end\n            const requestedEnd = position + length;\n            if (requestedEnd > currentEnd) {\n                const bufferStart = currentEnd;\n                const bufferSize = requestedEnd - bufferStart;\n                const bufferData = await this.file.read(bufferStart, bufferSize);\n                const buffer = new Buffer(bufferStart, bufferData);\n                allBuffers.push(buffer);\n            }\n\n            const newStart = allBuffers[0].start;\n            const newArrayBuffer = concatArrayBuffers(allBuffers.map(b => b.buffer));\n            const newBuffer = new Buffer(newStart, newArrayBuffer);\n\n            // Replace the overlapping buffers with the new composite one\n            const tmp = new Set(overlappingBuffers);\n            this.buffers = this.buffers.filter(b => !tmp.has(b));\n            this.addBuffer(newBuffer);\n\n            return newBuffer.slice(position, position + length)\n        }\n\n    }\n\n    addBuffer(buffer) {\n\n        const size = this.buffers.reduce((a,b) => a + b.size, 0) + buffer.size;\n        if(size > this.maxSize) {\n            // console.log(`max buffer size exceeded`)\n            const overage = size - this.maxSize;\n            this.buffers.sort((a,b) => a.creationTime - b.creationTime);\n            let sum = 0;\n            let i;\n            for(i=0; i<this.buffers.length; i++) {\n                sum += this.buffers[i].size;\n                if(sum > overage) {\n                    break\n                }\n            }\n            // console.log('removing buffers')\n            // for(let j=0; j<i; j++) console.log(`  ${this.buffers[j].toString()}`)\n            this.buffers = (i < this.buffers.length - 1)  ? this.buffers.slice(i)  : [];\n        }\n\n        if(buffer.size <= this.maxSize) {\n            this.buffers.push(buffer);\n        }\n    }\n\n\n\n}\n\nclass Buffer {\n\n    constructor(bufferStart, buffer) {\n        this.creationTime = Date.now();\n        this.start = bufferStart;\n        this.buffer = buffer;\n    }\n\n    slice(start, end) {\n        if(start < this.start || end - start > this.buffer.byteLength) {\n            throw Error(\"buffer bounds error\")\n        }\n        return this.buffer.slice(start - this.start, end - this.start)\n    }\n\n    get end() {\n        return this.start + this.buffer.byteLength\n    }\n\n    get size() {\n        return this.buffer.byteLength\n    }\n\n    contains(start, end) {\n        return start >= this.start && end <= this.end\n    }\n\n    overlaps(start, end) {\n        return (start > this.start && start < this.end) || (end > this.start && end < this.end)\n    }\n\n    toString() {\n        return `Buffer ${this.creationTime}   ${this.start} - ${this.end}`\n    }\n\n}\n\n/**\n * concatenates 2 array buffers.\n * Credit: https://gist.github.com/72lions/4528834\n *\n * @private\n * @param {ArrayBuffers} buffer1 The first buffer.\n * @param {ArrayBuffers} buffer2 The second buffer.\n * @return {ArrayBuffers} The new ArrayBuffer created out of the two.\n */\nfunction concatArrayBuffers(buffers) {\n    const size = buffers.reduce((a,b) => a + b.byteLength, 0);\n    const tmp = new Uint8Array(size);\n    let offset = 0;\n    for(let b of buffers) {\n        tmp.set(new Uint8Array(b), offset);\n        offset += b.byteLength;\n    }\n    return tmp.buffer\n}\n\n/**\n * Return 0 <= i <= array.length such that !pred(array[i - 1]) && pred(array[i]).\n *\n * returns an index 0 ≤ i ≤ array.length such that the given predicate is false for array[i - 1] and true for array[i]* *\n */\nfunction binarySearch(array, pred, min) {\n    let lo = min - 1, hi = array.length;\n    while (1 + lo < hi) {\n        const mi = lo + ((hi - lo) >> 1);\n        if (pred(array[mi])) {\n            hi = mi;\n        } else {\n            lo = mi;\n        }\n    }\n    return hi\n}\n\nclass BlobFile {\n\n    constructor(blob) {\n        this.file = blob;\n    }\n\n    async read(position, length) {\n\n        if(length === 0) {\n            return new ArrayBuffer()\n        }\n\n        const blob = (position != undefined && length) ?\n            this.file.slice(position, position + length) :\n            this.file;\n\n        return blob.arrayBuffer()\n    }\n}\n\n// esm/core.js\nasync function _unpack_struct_from_async(structure, async_buf, offset = 0) {\n  var output = /* @__PURE__ */ new Map();\n  for (let [key, fmt] of structure.entries()) {\n    let value = await struct.unpack_from_async(\"<\" + fmt, async_buf, offset);\n    offset += struct.calcsize(fmt);\n    if (value.length == 1) {\n      value = value[0];\n    }\n    output.set(key, value);\n  }\n  return output;\n}\nfunction _unpack_struct_from(structure, buf, offset = 0) {\n  var output = /* @__PURE__ */ new Map();\n  for (let [key, fmt] of structure.entries()) {\n    let value = struct.unpack_from(\"<\" + fmt, buf, offset);\n    offset += struct.calcsize(fmt);\n    if (value.length == 1) {\n      value = value[0];\n    }\n    output.set(key, value);\n  }\n  return output;\n}\nfunction assert(thing) {\n  if (!thing) {\n    thing();\n  }\n}\nfunction _structure_size(structure) {\n  var fmt = \"<\" + Array.from(structure.values()).join(\"\");\n  return struct.calcsize(fmt);\n}\nfunction _padded_size(size, padding_multiple = 8) {\n  return Math.ceil(size / padding_multiple) * padding_multiple;\n}\nvar dtype_to_format = {\n  \"u\": \"Uint\",\n  \"i\": \"Int\",\n  \"f\": \"Float\"\n};\nfunction dtype_getter(dtype_str) {\n  var big_endian = struct._is_big_endian(dtype_str);\n  var getter, nbytes;\n  if (/S/.test(dtype_str)) {\n    getter = \"getString\";\n    nbytes = ((dtype_str.match(/S(\\d*)/) || [])[1] || 1) | 0;\n  } else {\n    let [_, fstr, bytestr] = dtype_str.match(/[<>=!@]?(i|u|f)(\\d*)/);\n    nbytes = parseInt(bytestr || 4, 10);\n    let nbits = nbytes * 8;\n    getter = \"get\" + dtype_to_format[fstr] + nbits.toFixed();\n  }\n  return [getter, big_endian, nbytes];\n}\nvar Struct = class {\n  constructor() {\n    this.big_endian = isBigEndian();\n    this.getters = {\n      \"s\": \"getUint8\",\n      \"b\": \"getInt8\",\n      \"B\": \"getUint8\",\n      \"h\": \"getInt16\",\n      \"H\": \"getUint16\",\n      \"i\": \"getInt32\",\n      \"I\": \"getUint32\",\n      \"l\": \"getInt32\",\n      \"L\": \"getUint32\",\n      \"q\": \"getInt64\",\n      \"Q\": \"getUint64\",\n      \"f\": \"getFloat32\",\n      \"d\": \"getFloat64\"\n    };\n    this.byte_lengths = {\n      \"s\": 1,\n      \"b\": 1,\n      \"B\": 1,\n      \"h\": 2,\n      \"H\": 2,\n      \"i\": 4,\n      \"I\": 4,\n      \"l\": 4,\n      \"L\": 4,\n      \"q\": 8,\n      \"Q\": 8,\n      \"f\": 4,\n      \"d\": 8\n    };\n    let all_formats = Object.keys(this.byte_lengths).join(\"\");\n    this.fmt_size_regex = \"(\\\\d*)([\" + all_formats + \"])\";\n  }\n  calcsize(fmt) {\n    var size = 0;\n    var match;\n    var regex = new RegExp(this.fmt_size_regex, \"g\");\n    while ((match = regex.exec(fmt)) !== null) {\n      let n = parseInt(match[1] || 1, 10);\n      let f = match[2];\n      let subsize = this.byte_lengths[f];\n      size += n * subsize;\n    }\n    return size;\n  }\n  _is_big_endian(fmt) {\n    var big_endian;\n    if (/^</.test(fmt)) {\n      big_endian = false;\n    } else if (/^(!|>)/.test(fmt)) {\n      big_endian = true;\n    } else {\n      big_endian = this.big_endian;\n    }\n    return big_endian;\n  }\n  async unpack_from_async(fmt, async_buf, offset) {\n    var offset = Number(offset || 0);\n    const total_size = this.calcsize(fmt);\n    const local_buffer = await async_buf.slice(offset, offset + total_size);\n    let local_offset = 0;\n    var view = new DataView64(local_buffer);\n    var output = [];\n    var big_endian = this._is_big_endian(fmt);\n    var match;\n    var regex = new RegExp(this.fmt_size_regex, \"g\");\n    while ((match = regex.exec(fmt)) !== null) {\n      let n = parseInt(match[1] || 1, 10);\n      let f = match[2];\n      let getter = this.getters[f];\n      let size = this.byte_lengths[f];\n      if (f == \"s\") {\n        output.push(new TextDecoder().decode(local_buffer.slice(local_offset, local_offset + n)));\n        local_offset += n;\n      } else {\n        for (var i = 0; i < n; i++) {\n          output.push(view[getter](local_offset, !big_endian));\n          local_offset += size;\n        }\n      }\n    }\n    return output;\n  }\n  unpack_from(fmt, buffer, offset) {\n    var offset = Number(offset || 0);\n    const total_size = this.calcsize(fmt);\n    const local_buffer = buffer.slice(offset, offset + total_size);\n    let local_offset = 0;\n    var view = new DataView64(local_buffer);\n    var output = [];\n    var big_endian = this._is_big_endian(fmt);\n    var match;\n    var regex = new RegExp(this.fmt_size_regex, \"g\");\n    while ((match = regex.exec(fmt)) !== null) {\n      let n = parseInt(match[1] || 1, 10);\n      let f = match[2];\n      let getter = this.getters[f];\n      let size = this.byte_lengths[f];\n      if (f == \"s\") {\n        output.push(new TextDecoder().decode(local_buffer.slice(local_offset, local_offset + n)));\n        local_offset += n;\n      } else {\n        for (var i = 0; i < n; i++) {\n          output.push(view[getter](local_offset, !big_endian));\n          local_offset += size;\n        }\n      }\n    }\n    return output;\n  }\n};\nvar struct = new Struct();\nfunction isBigEndian() {\n  const array = new Uint8Array(4);\n  const view = new Uint32Array(array.buffer);\n  return !((view[0] = 1) & array[0]);\n}\nvar DataView64 = class extends DataView {\n  getUint64(byteOffset, littleEndian) {\n    const left = BigInt(this.getUint32(byteOffset, littleEndian));\n    const right = BigInt(this.getUint32(byteOffset + 4, littleEndian));\n    let combined = littleEndian ? left + (right << 32n) : (left << 32n) + right;\n    return Number(combined);\n  }\n  getInt64(byteOffset, littleEndian) {\n    var low, high;\n    if (littleEndian) {\n      low = this.getUint32(byteOffset, true);\n      high = this.getInt32(byteOffset + 4, true);\n    } else {\n      high = this.getInt32(byteOffset, false);\n      low = this.getUint32(byteOffset + 4, false);\n    }\n    let combined = BigInt(low) + (BigInt(high) << 32n);\n    return Number(combined);\n  }\n  getString(byteOffset, littleEndian, length) {\n    const str_buffer = this.buffer.slice(byteOffset, byteOffset + length);\n    const decoder = new TextDecoder();\n    return decoder.decode(str_buffer);\n  }\n  getVLENStruct(byteOffset, littleEndian, length) {\n    let item_size = this.getUint32(byteOffset, littleEndian);\n    let collection_address = this.getUint64(byteOffset + 4, littleEndian);\n    let object_index = this.getUint32(byteOffset + 12, littleEndian);\n    return [item_size, collection_address, object_index];\n  }\n};\nfunction bitSize(integer) {\n  return integer.toString(2).length;\n}\nfunction _unpack_integer(nbytes, buf, offset = 0, littleEndian = true) {\n  const local_buffer = buf.slice(offset, offset + nbytes);\n  let bytes = new Uint8Array(local_buffer);\n  if (!littleEndian) {\n    bytes.reverse();\n  }\n  let integer = bytes.reduce((accumulator, currentValue, index) => accumulator + (currentValue << index * 8), 0);\n  return integer;\n}\n\n// esm/datatype-msg.js\nvar DatatypeMessage = class {\n  constructor(buf, offset) {\n    this.buf = buf;\n    this.offset = offset;\n    this.dtype = this.determine_dtype();\n  }\n  async determine_dtype() {\n    let datatype_msg = await _unpack_struct_from_async(DATATYPE_MSG, this.buf, this.offset);\n    this.offset += DATATYPE_MSG_SIZE;\n    let datatype_class = datatype_msg.get(\"class_and_version\") & 15;\n    if (datatype_class == DATATYPE_FIXED_POINT) {\n      return this._determine_dtype_fixed_point(datatype_msg);\n    } else if (datatype_class == DATATYPE_FLOATING_POINT) {\n      return this._determine_dtype_floating_point(datatype_msg);\n    } else if (datatype_class == DATATYPE_TIME) {\n      throw \"Time datatype class not supported.\";\n    } else if (datatype_class == DATATYPE_STRING) {\n      return this._determine_dtype_string(datatype_msg);\n    } else if (datatype_class == DATATYPE_BITFIELD) {\n      throw \"Bitfield datatype class not supported.\";\n    } else if (datatype_class == DATATYPE_OPAQUE) {\n      return {\n        datatype_class: DATATYPE_OPAQUE,\n        size: datatype_msg.get(\"size\")\n      };\n    } else if (datatype_class == DATATYPE_COMPOUND) {\n      return this._determine_dtype_compound(datatype_msg);\n    } else if (datatype_class == DATATYPE_REFERENCE) {\n      return [\"REFERENCE\", datatype_msg.get(\"size\")];\n    } else if (datatype_class == DATATYPE_ENUMERATED) {\n      return this.determine_dtype();\n    } else if (datatype_class == DATATYPE_ARRAY) {\n      throw \"Array datatype class not supported.\";\n    } else if (datatype_class == DATATYPE_VARIABLE_LENGTH) {\n      let vlen_type = this._determine_dtype_vlen(datatype_msg);\n      if (vlen_type[0] == \"VLEN_SEQUENCE\") {\n        let base_type = this.determine_dtype();\n        vlen_type = [\"VLEN_SEQUENCE\", base_type];\n      }\n      return vlen_type;\n    } else {\n      throw \"Invalid datatype class \" + datatype_class;\n    }\n  }\n  _determine_dtype_fixed_point(datatype_msg) {\n    let length_in_bytes = datatype_msg.get(\"size\");\n    if (![1, 2, 4, 8].includes(length_in_bytes)) {\n      throw \"Unsupported datatype size\";\n    }\n    let signed = datatype_msg.get(\"class_bit_field_0\") & 8;\n    var dtype_char;\n    if (signed > 0) {\n      dtype_char = \"i\";\n    } else {\n      dtype_char = \"u\";\n    }\n    let byte_order = datatype_msg.get(\"class_bit_field_0\") & 1;\n    var byte_order_char;\n    if (byte_order == 0) {\n      byte_order_char = \"<\";\n    } else {\n      byte_order_char = \">\";\n    }\n    this.offset += 4;\n    return byte_order_char + dtype_char + length_in_bytes.toFixed();\n  }\n  _determine_dtype_floating_point(datatype_msg) {\n    let length_in_bytes = datatype_msg.get(\"size\");\n    if (![1, 2, 4, 8].includes(length_in_bytes)) {\n      throw \"Unsupported datatype size\";\n    }\n    let dtype_char = \"f\";\n    let byte_order = datatype_msg.get(\"class_bit_field_0\") & 1;\n    var byte_order_char;\n    if (byte_order == 0) {\n      byte_order_char = \"<\";\n    } else {\n      byte_order_char = \">\";\n    }\n    this.offset += 12;\n    return byte_order_char + dtype_char + length_in_bytes.toFixed();\n  }\n  _determine_dtype_string(datatype_msg) {\n    return \"S\" + datatype_msg.get(\"size\").toFixed();\n  }\n  _determine_dtype_vlen(datatype_msg) {\n    let vlen_type = datatype_msg.get(\"class_bit_field_0\") & 1;\n    if (vlen_type != 1) {\n      return [\"VLEN_SEQUENCE\", 0, 0];\n    }\n    let padding_type = datatype_msg.get(\"class_bit_field_0\") >> 4;\n    let character_set = datatype_msg.get(\"class_bit_field_1\") & 1;\n    return [\"VLEN_STRING\", padding_type, character_set];\n  }\n  _determine_dtype_compound(datatype_msg) {\n    throw \"Compound type not yet implemented!\";\n  }\n};\nvar DATATYPE_MSG = /* @__PURE__ */ new Map([\n  [\"class_and_version\", \"B\"],\n  [\"class_bit_field_0\", \"B\"],\n  [\"class_bit_field_1\", \"B\"],\n  [\"class_bit_field_2\", \"B\"],\n  [\"size\", \"I\"]\n]);\nvar DATATYPE_MSG_SIZE = _structure_size(DATATYPE_MSG);\nvar COMPOUND_PROP_DESC_V1 = /* @__PURE__ */ new Map([\n  [\"offset\", \"I\"],\n  [\"dimensionality\", \"B\"],\n  [\"reserved_0\", \"B\"],\n  [\"reserved_1\", \"B\"],\n  [\"reserved_2\", \"B\"],\n  [\"permutation\", \"I\"],\n  [\"reserved_3\", \"I\"],\n  [\"dim_size_1\", \"I\"],\n  [\"dim_size_2\", \"I\"],\n  [\"dim_size_3\", \"I\"],\n  [\"dim_size_4\", \"I\"]\n]);\n_structure_size(COMPOUND_PROP_DESC_V1);\nvar DATATYPE_FIXED_POINT = 0;\nvar DATATYPE_FLOATING_POINT = 1;\nvar DATATYPE_TIME = 2;\nvar DATATYPE_STRING = 3;\nvar DATATYPE_BITFIELD = 4;\nvar DATATYPE_OPAQUE = 5;\nvar DATATYPE_COMPOUND = 6;\nvar DATATYPE_REFERENCE = 7;\nvar DATATYPE_ENUMERATED = 8;\nvar DATATYPE_VARIABLE_LENGTH = 9;\nvar DATATYPE_ARRAY = 10;\nfunction zero$1(buf) {\n  let len = buf.length;\n  while (--len >= 0) {\n    buf[len] = 0;\n  }\n}\nvar MIN_MATCH$1 = 3;\nvar MAX_MATCH$1 = 258;\nvar LENGTH_CODES$1 = 29;\nvar LITERALS$1 = 256;\nvar L_CODES$1 = LITERALS$1 + 1 + LENGTH_CODES$1;\nvar D_CODES$1 = 30;\nvar DIST_CODE_LEN = 512;\nvar static_ltree = new Array((L_CODES$1 + 2) * 2);\nzero$1(static_ltree);\nvar static_dtree = new Array(D_CODES$1 * 2);\nzero$1(static_dtree);\nvar _dist_code = new Array(DIST_CODE_LEN);\nzero$1(_dist_code);\nvar _length_code = new Array(MAX_MATCH$1 - MIN_MATCH$1 + 1);\nzero$1(_length_code);\nvar base_length = new Array(LENGTH_CODES$1);\nzero$1(base_length);\nvar base_dist = new Array(D_CODES$1);\nzero$1(base_dist);\nvar adler32 = (adler, buf, len, pos) => {\n  let s1 = adler & 65535 | 0, s2 = adler >>> 16 & 65535 | 0, n = 0;\n  while (len !== 0) {\n    n = len > 2e3 ? 2e3 : len;\n    len -= n;\n    do {\n      s1 = s1 + buf[pos++] | 0;\n      s2 = s2 + s1 | 0;\n    } while (--n);\n    s1 %= 65521;\n    s2 %= 65521;\n  }\n  return s1 | s2 << 16 | 0;\n};\nvar adler32_1 = adler32;\nvar makeTable = () => {\n  let c, table = [];\n  for (var n = 0; n < 256; n++) {\n    c = n;\n    for (var k = 0; k < 8; k++) {\n      c = c & 1 ? 3988292384 ^ c >>> 1 : c >>> 1;\n    }\n    table[n] = c;\n  }\n  return table;\n};\nvar crcTable = new Uint32Array(makeTable());\nvar crc32 = (crc, buf, len, pos) => {\n  const t = crcTable;\n  const end = pos + len;\n  crc ^= -1;\n  for (let i = pos; i < end; i++) {\n    crc = crc >>> 8 ^ t[(crc ^ buf[i]) & 255];\n  }\n  return crc ^ -1;\n};\nvar crc32_1 = crc32;\nvar messages = {\n  2: \"need dictionary\",\n  1: \"stream end\",\n  0: \"\",\n  \"-1\": \"file error\",\n  \"-2\": \"stream error\",\n  \"-3\": \"data error\",\n  \"-4\": \"insufficient memory\",\n  \"-5\": \"buffer error\",\n  \"-6\": \"incompatible version\"\n};\nvar constants$2 = {\n  Z_NO_FLUSH: 0,\n  Z_PARTIAL_FLUSH: 1,\n  Z_SYNC_FLUSH: 2,\n  Z_FULL_FLUSH: 3,\n  Z_FINISH: 4,\n  Z_BLOCK: 5,\n  Z_TREES: 6,\n  Z_OK: 0,\n  Z_STREAM_END: 1,\n  Z_NEED_DICT: 2,\n  Z_ERRNO: -1,\n  Z_STREAM_ERROR: -2,\n  Z_DATA_ERROR: -3,\n  Z_MEM_ERROR: -4,\n  Z_BUF_ERROR: -5,\n  Z_NO_COMPRESSION: 0,\n  Z_BEST_SPEED: 1,\n  Z_BEST_COMPRESSION: 9,\n  Z_DEFAULT_COMPRESSION: -1,\n  Z_FILTERED: 1,\n  Z_HUFFMAN_ONLY: 2,\n  Z_RLE: 3,\n  Z_FIXED: 4,\n  Z_DEFAULT_STRATEGY: 0,\n  Z_BINARY: 0,\n  Z_TEXT: 1,\n  Z_UNKNOWN: 2,\n  Z_DEFLATED: 8\n};\nvar _has = (obj, key) => {\n  return Object.prototype.hasOwnProperty.call(obj, key);\n};\nvar assign = function(obj) {\n  const sources = Array.prototype.slice.call(arguments, 1);\n  while (sources.length) {\n    const source = sources.shift();\n    if (!source) {\n      continue;\n    }\n    if (typeof source !== \"object\") {\n      throw new TypeError(source + \"must be non-object\");\n    }\n    for (const p in source) {\n      if (_has(source, p)) {\n        obj[p] = source[p];\n      }\n    }\n  }\n  return obj;\n};\nvar flattenChunks = (chunks) => {\n  let len = 0;\n  for (let i = 0, l = chunks.length; i < l; i++) {\n    len += chunks[i].length;\n  }\n  const result = new Uint8Array(len);\n  for (let i = 0, pos = 0, l = chunks.length; i < l; i++) {\n    let chunk = chunks[i];\n    result.set(chunk, pos);\n    pos += chunk.length;\n  }\n  return result;\n};\nvar common = {\n  assign,\n  flattenChunks\n};\nvar STR_APPLY_UIA_OK = true;\ntry {\n  String.fromCharCode.apply(null, new Uint8Array(1));\n} catch (__) {\n  STR_APPLY_UIA_OK = false;\n}\nvar _utf8len = new Uint8Array(256);\nfor (let q = 0; q < 256; q++) {\n  _utf8len[q] = q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1;\n}\n_utf8len[254] = _utf8len[254] = 1;\nvar string2buf = (str) => {\n  if (typeof TextEncoder === \"function\" && TextEncoder.prototype.encode) {\n    return new TextEncoder().encode(str);\n  }\n  let buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;\n  for (m_pos = 0; m_pos < str_len; m_pos++) {\n    c = str.charCodeAt(m_pos);\n    if ((c & 64512) === 55296 && m_pos + 1 < str_len) {\n      c2 = str.charCodeAt(m_pos + 1);\n      if ((c2 & 64512) === 56320) {\n        c = 65536 + (c - 55296 << 10) + (c2 - 56320);\n        m_pos++;\n      }\n    }\n    buf_len += c < 128 ? 1 : c < 2048 ? 2 : c < 65536 ? 3 : 4;\n  }\n  buf = new Uint8Array(buf_len);\n  for (i = 0, m_pos = 0; i < buf_len; m_pos++) {\n    c = str.charCodeAt(m_pos);\n    if ((c & 64512) === 55296 && m_pos + 1 < str_len) {\n      c2 = str.charCodeAt(m_pos + 1);\n      if ((c2 & 64512) === 56320) {\n        c = 65536 + (c - 55296 << 10) + (c2 - 56320);\n        m_pos++;\n      }\n    }\n    if (c < 128) {\n      buf[i++] = c;\n    } else if (c < 2048) {\n      buf[i++] = 192 | c >>> 6;\n      buf[i++] = 128 | c & 63;\n    } else if (c < 65536) {\n      buf[i++] = 224 | c >>> 12;\n      buf[i++] = 128 | c >>> 6 & 63;\n      buf[i++] = 128 | c & 63;\n    } else {\n      buf[i++] = 240 | c >>> 18;\n      buf[i++] = 128 | c >>> 12 & 63;\n      buf[i++] = 128 | c >>> 6 & 63;\n      buf[i++] = 128 | c & 63;\n    }\n  }\n  return buf;\n};\nvar buf2binstring = (buf, len) => {\n  if (len < 65534) {\n    if (buf.subarray && STR_APPLY_UIA_OK) {\n      return String.fromCharCode.apply(null, buf.length === len ? buf : buf.subarray(0, len));\n    }\n  }\n  let result = \"\";\n  for (let i = 0; i < len; i++) {\n    result += String.fromCharCode(buf[i]);\n  }\n  return result;\n};\nvar buf2string = (buf, max) => {\n  const len = max || buf.length;\n  if (typeof TextDecoder === \"function\" && TextDecoder.prototype.decode) {\n    return new TextDecoder().decode(buf.subarray(0, max));\n  }\n  let i, out;\n  const utf16buf = new Array(len * 2);\n  for (out = 0, i = 0; i < len; ) {\n    let c = buf[i++];\n    if (c < 128) {\n      utf16buf[out++] = c;\n      continue;\n    }\n    let c_len = _utf8len[c];\n    if (c_len > 4) {\n      utf16buf[out++] = 65533;\n      i += c_len - 1;\n      continue;\n    }\n    c &= c_len === 2 ? 31 : c_len === 3 ? 15 : 7;\n    while (c_len > 1 && i < len) {\n      c = c << 6 | buf[i++] & 63;\n      c_len--;\n    }\n    if (c_len > 1) {\n      utf16buf[out++] = 65533;\n      continue;\n    }\n    if (c < 65536) {\n      utf16buf[out++] = c;\n    } else {\n      c -= 65536;\n      utf16buf[out++] = 55296 | c >> 10 & 1023;\n      utf16buf[out++] = 56320 | c & 1023;\n    }\n  }\n  return buf2binstring(utf16buf, out);\n};\nvar utf8border = (buf, max) => {\n  max = max || buf.length;\n  if (max > buf.length) {\n    max = buf.length;\n  }\n  let pos = max - 1;\n  while (pos >= 0 && (buf[pos] & 192) === 128) {\n    pos--;\n  }\n  if (pos < 0) {\n    return max;\n  }\n  if (pos === 0) {\n    return max;\n  }\n  return pos + _utf8len[buf[pos]] > max ? pos : max;\n};\nvar strings = {\n  string2buf,\n  buf2string,\n  utf8border\n};\nfunction ZStream() {\n  this.input = null;\n  this.next_in = 0;\n  this.avail_in = 0;\n  this.total_in = 0;\n  this.output = null;\n  this.next_out = 0;\n  this.avail_out = 0;\n  this.total_out = 0;\n  this.msg = \"\";\n  this.state = null;\n  this.data_type = 2;\n  this.adler = 0;\n}\nvar zstream = ZStream;\nvar BAD$1 = 30;\nvar TYPE$1 = 12;\nvar inffast = function inflate_fast(strm, start) {\n  let _in;\n  let last;\n  let _out;\n  let beg;\n  let end;\n  let dmax;\n  let wsize;\n  let whave;\n  let wnext;\n  let s_window;\n  let hold;\n  let bits;\n  let lcode;\n  let dcode;\n  let lmask;\n  let dmask;\n  let here;\n  let op;\n  let len;\n  let dist;\n  let from;\n  let from_source;\n  let input, output;\n  const state = strm.state;\n  _in = strm.next_in;\n  input = strm.input;\n  last = _in + (strm.avail_in - 5);\n  _out = strm.next_out;\n  output = strm.output;\n  beg = _out - (start - strm.avail_out);\n  end = _out + (strm.avail_out - 257);\n  dmax = state.dmax;\n  wsize = state.wsize;\n  whave = state.whave;\n  wnext = state.wnext;\n  s_window = state.window;\n  hold = state.hold;\n  bits = state.bits;\n  lcode = state.lencode;\n  dcode = state.distcode;\n  lmask = (1 << state.lenbits) - 1;\n  dmask = (1 << state.distbits) - 1;\n  top:\n    do {\n      if (bits < 15) {\n        hold += input[_in++] << bits;\n        bits += 8;\n        hold += input[_in++] << bits;\n        bits += 8;\n      }\n      here = lcode[hold & lmask];\n      dolen:\n        for (; ; ) {\n          op = here >>> 24;\n          hold >>>= op;\n          bits -= op;\n          op = here >>> 16 & 255;\n          if (op === 0) {\n            output[_out++] = here & 65535;\n          } else if (op & 16) {\n            len = here & 65535;\n            op &= 15;\n            if (op) {\n              if (bits < op) {\n                hold += input[_in++] << bits;\n                bits += 8;\n              }\n              len += hold & (1 << op) - 1;\n              hold >>>= op;\n              bits -= op;\n            }\n            if (bits < 15) {\n              hold += input[_in++] << bits;\n              bits += 8;\n              hold += input[_in++] << bits;\n              bits += 8;\n            }\n            here = dcode[hold & dmask];\n            dodist:\n              for (; ; ) {\n                op = here >>> 24;\n                hold >>>= op;\n                bits -= op;\n                op = here >>> 16 & 255;\n                if (op & 16) {\n                  dist = here & 65535;\n                  op &= 15;\n                  if (bits < op) {\n                    hold += input[_in++] << bits;\n                    bits += 8;\n                    if (bits < op) {\n                      hold += input[_in++] << bits;\n                      bits += 8;\n                    }\n                  }\n                  dist += hold & (1 << op) - 1;\n                  if (dist > dmax) {\n                    strm.msg = \"invalid distance too far back\";\n                    state.mode = BAD$1;\n                    break top;\n                  }\n                  hold >>>= op;\n                  bits -= op;\n                  op = _out - beg;\n                  if (dist > op) {\n                    op = dist - op;\n                    if (op > whave) {\n                      if (state.sane) {\n                        strm.msg = \"invalid distance too far back\";\n                        state.mode = BAD$1;\n                        break top;\n                      }\n                    }\n                    from = 0;\n                    from_source = s_window;\n                    if (wnext === 0) {\n                      from += wsize - op;\n                      if (op < len) {\n                        len -= op;\n                        do {\n                          output[_out++] = s_window[from++];\n                        } while (--op);\n                        from = _out - dist;\n                        from_source = output;\n                      }\n                    } else if (wnext < op) {\n                      from += wsize + wnext - op;\n                      op -= wnext;\n                      if (op < len) {\n                        len -= op;\n                        do {\n                          output[_out++] = s_window[from++];\n                        } while (--op);\n                        from = 0;\n                        if (wnext < len) {\n                          op = wnext;\n                          len -= op;\n                          do {\n                            output[_out++] = s_window[from++];\n                          } while (--op);\n                          from = _out - dist;\n                          from_source = output;\n                        }\n                      }\n                    } else {\n                      from += wnext - op;\n                      if (op < len) {\n                        len -= op;\n                        do {\n                          output[_out++] = s_window[from++];\n                        } while (--op);\n                        from = _out - dist;\n                        from_source = output;\n                      }\n                    }\n                    while (len > 2) {\n                      output[_out++] = from_source[from++];\n                      output[_out++] = from_source[from++];\n                      output[_out++] = from_source[from++];\n                      len -= 3;\n                    }\n                    if (len) {\n                      output[_out++] = from_source[from++];\n                      if (len > 1) {\n                        output[_out++] = from_source[from++];\n                      }\n                    }\n                  } else {\n                    from = _out - dist;\n                    do {\n                      output[_out++] = output[from++];\n                      output[_out++] = output[from++];\n                      output[_out++] = output[from++];\n                      len -= 3;\n                    } while (len > 2);\n                    if (len) {\n                      output[_out++] = output[from++];\n                      if (len > 1) {\n                        output[_out++] = output[from++];\n                      }\n                    }\n                  }\n                } else if ((op & 64) === 0) {\n                  here = dcode[(here & 65535) + (hold & (1 << op) - 1)];\n                  continue dodist;\n                } else {\n                  strm.msg = \"invalid distance code\";\n                  state.mode = BAD$1;\n                  break top;\n                }\n                break;\n              }\n          } else if ((op & 64) === 0) {\n            here = lcode[(here & 65535) + (hold & (1 << op) - 1)];\n            continue dolen;\n          } else if (op & 32) {\n            state.mode = TYPE$1;\n            break top;\n          } else {\n            strm.msg = \"invalid literal/length code\";\n            state.mode = BAD$1;\n            break top;\n          }\n          break;\n        }\n    } while (_in < last && _out < end);\n  len = bits >> 3;\n  _in -= len;\n  bits -= len << 3;\n  hold &= (1 << bits) - 1;\n  strm.next_in = _in;\n  strm.next_out = _out;\n  strm.avail_in = _in < last ? 5 + (last - _in) : 5 - (_in - last);\n  strm.avail_out = _out < end ? 257 + (end - _out) : 257 - (_out - end);\n  state.hold = hold;\n  state.bits = bits;\n  return;\n};\nvar MAXBITS = 15;\nvar ENOUGH_LENS$1 = 852;\nvar ENOUGH_DISTS$1 = 592;\nvar CODES$1 = 0;\nvar LENS$1 = 1;\nvar DISTS$1 = 2;\nvar lbase = new Uint16Array([\n  3,\n  4,\n  5,\n  6,\n  7,\n  8,\n  9,\n  10,\n  11,\n  13,\n  15,\n  17,\n  19,\n  23,\n  27,\n  31,\n  35,\n  43,\n  51,\n  59,\n  67,\n  83,\n  99,\n  115,\n  131,\n  163,\n  195,\n  227,\n  258,\n  0,\n  0\n]);\nvar lext = new Uint8Array([\n  16,\n  16,\n  16,\n  16,\n  16,\n  16,\n  16,\n  16,\n  17,\n  17,\n  17,\n  17,\n  18,\n  18,\n  18,\n  18,\n  19,\n  19,\n  19,\n  19,\n  20,\n  20,\n  20,\n  20,\n  21,\n  21,\n  21,\n  21,\n  16,\n  72,\n  78\n]);\nvar dbase = new Uint16Array([\n  1,\n  2,\n  3,\n  4,\n  5,\n  7,\n  9,\n  13,\n  17,\n  25,\n  33,\n  49,\n  65,\n  97,\n  129,\n  193,\n  257,\n  385,\n  513,\n  769,\n  1025,\n  1537,\n  2049,\n  3073,\n  4097,\n  6145,\n  8193,\n  12289,\n  16385,\n  24577,\n  0,\n  0\n]);\nvar dext = new Uint8Array([\n  16,\n  16,\n  16,\n  16,\n  17,\n  17,\n  18,\n  18,\n  19,\n  19,\n  20,\n  20,\n  21,\n  21,\n  22,\n  22,\n  23,\n  23,\n  24,\n  24,\n  25,\n  25,\n  26,\n  26,\n  27,\n  27,\n  28,\n  28,\n  29,\n  29,\n  64,\n  64\n]);\nvar inflate_table = (type, lens, lens_index, codes, table, table_index, work, opts) => {\n  const bits = opts.bits;\n  let len = 0;\n  let sym = 0;\n  let min = 0, max = 0;\n  let root = 0;\n  let curr = 0;\n  let drop = 0;\n  let left = 0;\n  let used = 0;\n  let huff = 0;\n  let incr;\n  let fill;\n  let low;\n  let mask;\n  let next;\n  let base = null;\n  let base_index = 0;\n  let end;\n  const count = new Uint16Array(MAXBITS + 1);\n  const offs = new Uint16Array(MAXBITS + 1);\n  let extra = null;\n  let extra_index = 0;\n  let here_bits, here_op, here_val;\n  for (len = 0; len <= MAXBITS; len++) {\n    count[len] = 0;\n  }\n  for (sym = 0; sym < codes; sym++) {\n    count[lens[lens_index + sym]]++;\n  }\n  root = bits;\n  for (max = MAXBITS; max >= 1; max--) {\n    if (count[max] !== 0) {\n      break;\n    }\n  }\n  if (root > max) {\n    root = max;\n  }\n  if (max === 0) {\n    table[table_index++] = 1 << 24 | 64 << 16 | 0;\n    table[table_index++] = 1 << 24 | 64 << 16 | 0;\n    opts.bits = 1;\n    return 0;\n  }\n  for (min = 1; min < max; min++) {\n    if (count[min] !== 0) {\n      break;\n    }\n  }\n  if (root < min) {\n    root = min;\n  }\n  left = 1;\n  for (len = 1; len <= MAXBITS; len++) {\n    left <<= 1;\n    left -= count[len];\n    if (left < 0) {\n      return -1;\n    }\n  }\n  if (left > 0 && (type === CODES$1 || max !== 1)) {\n    return -1;\n  }\n  offs[1] = 0;\n  for (len = 1; len < MAXBITS; len++) {\n    offs[len + 1] = offs[len] + count[len];\n  }\n  for (sym = 0; sym < codes; sym++) {\n    if (lens[lens_index + sym] !== 0) {\n      work[offs[lens[lens_index + sym]]++] = sym;\n    }\n  }\n  if (type === CODES$1) {\n    base = extra = work;\n    end = 19;\n  } else if (type === LENS$1) {\n    base = lbase;\n    base_index -= 257;\n    extra = lext;\n    extra_index -= 257;\n    end = 256;\n  } else {\n    base = dbase;\n    extra = dext;\n    end = -1;\n  }\n  huff = 0;\n  sym = 0;\n  len = min;\n  next = table_index;\n  curr = root;\n  drop = 0;\n  low = -1;\n  used = 1 << root;\n  mask = used - 1;\n  if (type === LENS$1 && used > ENOUGH_LENS$1 || type === DISTS$1 && used > ENOUGH_DISTS$1) {\n    return 1;\n  }\n  for (; ; ) {\n    here_bits = len - drop;\n    if (work[sym] < end) {\n      here_op = 0;\n      here_val = work[sym];\n    } else if (work[sym] > end) {\n      here_op = extra[extra_index + work[sym]];\n      here_val = base[base_index + work[sym]];\n    } else {\n      here_op = 32 + 64;\n      here_val = 0;\n    }\n    incr = 1 << len - drop;\n    fill = 1 << curr;\n    min = fill;\n    do {\n      fill -= incr;\n      table[next + (huff >> drop) + fill] = here_bits << 24 | here_op << 16 | here_val | 0;\n    } while (fill !== 0);\n    incr = 1 << len - 1;\n    while (huff & incr) {\n      incr >>= 1;\n    }\n    if (incr !== 0) {\n      huff &= incr - 1;\n      huff += incr;\n    } else {\n      huff = 0;\n    }\n    sym++;\n    if (--count[len] === 0) {\n      if (len === max) {\n        break;\n      }\n      len = lens[lens_index + work[sym]];\n    }\n    if (len > root && (huff & mask) !== low) {\n      if (drop === 0) {\n        drop = root;\n      }\n      next += min;\n      curr = len - drop;\n      left = 1 << curr;\n      while (curr + drop < max) {\n        left -= count[curr + drop];\n        if (left <= 0) {\n          break;\n        }\n        curr++;\n        left <<= 1;\n      }\n      used += 1 << curr;\n      if (type === LENS$1 && used > ENOUGH_LENS$1 || type === DISTS$1 && used > ENOUGH_DISTS$1) {\n        return 1;\n      }\n      low = huff & mask;\n      table[low] = root << 24 | curr << 16 | next - table_index | 0;\n    }\n  }\n  if (huff !== 0) {\n    table[next + huff] = len - drop << 24 | 64 << 16 | 0;\n  }\n  opts.bits = root;\n  return 0;\n};\nvar inftrees = inflate_table;\nvar CODES = 0;\nvar LENS = 1;\nvar DISTS = 2;\nvar {\n  Z_FINISH: Z_FINISH$1,\n  Z_BLOCK,\n  Z_TREES,\n  Z_OK: Z_OK$1,\n  Z_STREAM_END: Z_STREAM_END$1,\n  Z_NEED_DICT: Z_NEED_DICT$1,\n  Z_STREAM_ERROR: Z_STREAM_ERROR$1,\n  Z_DATA_ERROR: Z_DATA_ERROR$1,\n  Z_MEM_ERROR: Z_MEM_ERROR$1,\n  Z_BUF_ERROR,\n  Z_DEFLATED\n} = constants$2;\nvar HEAD = 1;\nvar FLAGS = 2;\nvar TIME = 3;\nvar OS = 4;\nvar EXLEN = 5;\nvar EXTRA = 6;\nvar NAME = 7;\nvar COMMENT = 8;\nvar HCRC = 9;\nvar DICTID = 10;\nvar DICT = 11;\nvar TYPE = 12;\nvar TYPEDO = 13;\nvar STORED = 14;\nvar COPY_ = 15;\nvar COPY = 16;\nvar TABLE = 17;\nvar LENLENS = 18;\nvar CODELENS = 19;\nvar LEN_ = 20;\nvar LEN = 21;\nvar LENEXT = 22;\nvar DIST = 23;\nvar DISTEXT = 24;\nvar MATCH = 25;\nvar LIT = 26;\nvar CHECK = 27;\nvar LENGTH = 28;\nvar DONE = 29;\nvar BAD = 30;\nvar MEM = 31;\nvar SYNC = 32;\nvar ENOUGH_LENS = 852;\nvar ENOUGH_DISTS = 592;\nvar MAX_WBITS = 15;\nvar DEF_WBITS = MAX_WBITS;\nvar zswap32 = (q) => {\n  return (q >>> 24 & 255) + (q >>> 8 & 65280) + ((q & 65280) << 8) + ((q & 255) << 24);\n};\nfunction InflateState() {\n  this.mode = 0;\n  this.last = false;\n  this.wrap = 0;\n  this.havedict = false;\n  this.flags = 0;\n  this.dmax = 0;\n  this.check = 0;\n  this.total = 0;\n  this.head = null;\n  this.wbits = 0;\n  this.wsize = 0;\n  this.whave = 0;\n  this.wnext = 0;\n  this.window = null;\n  this.hold = 0;\n  this.bits = 0;\n  this.length = 0;\n  this.offset = 0;\n  this.extra = 0;\n  this.lencode = null;\n  this.distcode = null;\n  this.lenbits = 0;\n  this.distbits = 0;\n  this.ncode = 0;\n  this.nlen = 0;\n  this.ndist = 0;\n  this.have = 0;\n  this.next = null;\n  this.lens = new Uint16Array(320);\n  this.work = new Uint16Array(288);\n  this.lendyn = null;\n  this.distdyn = null;\n  this.sane = 0;\n  this.back = 0;\n  this.was = 0;\n}\nvar inflateResetKeep = (strm) => {\n  if (!strm || !strm.state) {\n    return Z_STREAM_ERROR$1;\n  }\n  const state = strm.state;\n  strm.total_in = strm.total_out = state.total = 0;\n  strm.msg = \"\";\n  if (state.wrap) {\n    strm.adler = state.wrap & 1;\n  }\n  state.mode = HEAD;\n  state.last = 0;\n  state.havedict = 0;\n  state.dmax = 32768;\n  state.head = null;\n  state.hold = 0;\n  state.bits = 0;\n  state.lencode = state.lendyn = new Int32Array(ENOUGH_LENS);\n  state.distcode = state.distdyn = new Int32Array(ENOUGH_DISTS);\n  state.sane = 1;\n  state.back = -1;\n  return Z_OK$1;\n};\nvar inflateReset = (strm) => {\n  if (!strm || !strm.state) {\n    return Z_STREAM_ERROR$1;\n  }\n  const state = strm.state;\n  state.wsize = 0;\n  state.whave = 0;\n  state.wnext = 0;\n  return inflateResetKeep(strm);\n};\nvar inflateReset2 = (strm, windowBits) => {\n  let wrap;\n  if (!strm || !strm.state) {\n    return Z_STREAM_ERROR$1;\n  }\n  const state = strm.state;\n  if (windowBits < 0) {\n    wrap = 0;\n    windowBits = -windowBits;\n  } else {\n    wrap = (windowBits >> 4) + 1;\n    if (windowBits < 48) {\n      windowBits &= 15;\n    }\n  }\n  if (windowBits && (windowBits < 8 || windowBits > 15)) {\n    return Z_STREAM_ERROR$1;\n  }\n  if (state.window !== null && state.wbits !== windowBits) {\n    state.window = null;\n  }\n  state.wrap = wrap;\n  state.wbits = windowBits;\n  return inflateReset(strm);\n};\nvar inflateInit2 = (strm, windowBits) => {\n  if (!strm) {\n    return Z_STREAM_ERROR$1;\n  }\n  const state = new InflateState();\n  strm.state = state;\n  state.window = null;\n  const ret = inflateReset2(strm, windowBits);\n  if (ret !== Z_OK$1) {\n    strm.state = null;\n  }\n  return ret;\n};\nvar inflateInit = (strm) => {\n  return inflateInit2(strm, DEF_WBITS);\n};\nvar virgin = true;\nvar lenfix;\nvar distfix;\nvar fixedtables = (state) => {\n  if (virgin) {\n    lenfix = new Int32Array(512);\n    distfix = new Int32Array(32);\n    let sym = 0;\n    while (sym < 144) {\n      state.lens[sym++] = 8;\n    }\n    while (sym < 256) {\n      state.lens[sym++] = 9;\n    }\n    while (sym < 280) {\n      state.lens[sym++] = 7;\n    }\n    while (sym < 288) {\n      state.lens[sym++] = 8;\n    }\n    inftrees(LENS, state.lens, 0, 288, lenfix, 0, state.work, { bits: 9 });\n    sym = 0;\n    while (sym < 32) {\n      state.lens[sym++] = 5;\n    }\n    inftrees(DISTS, state.lens, 0, 32, distfix, 0, state.work, { bits: 5 });\n    virgin = false;\n  }\n  state.lencode = lenfix;\n  state.lenbits = 9;\n  state.distcode = distfix;\n  state.distbits = 5;\n};\nvar updatewindow = (strm, src, end, copy) => {\n  let dist;\n  const state = strm.state;\n  if (state.window === null) {\n    state.wsize = 1 << state.wbits;\n    state.wnext = 0;\n    state.whave = 0;\n    state.window = new Uint8Array(state.wsize);\n  }\n  if (copy >= state.wsize) {\n    state.window.set(src.subarray(end - state.wsize, end), 0);\n    state.wnext = 0;\n    state.whave = state.wsize;\n  } else {\n    dist = state.wsize - state.wnext;\n    if (dist > copy) {\n      dist = copy;\n    }\n    state.window.set(src.subarray(end - copy, end - copy + dist), state.wnext);\n    copy -= dist;\n    if (copy) {\n      state.window.set(src.subarray(end - copy, end), 0);\n      state.wnext = copy;\n      state.whave = state.wsize;\n    } else {\n      state.wnext += dist;\n      if (state.wnext === state.wsize) {\n        state.wnext = 0;\n      }\n      if (state.whave < state.wsize) {\n        state.whave += dist;\n      }\n    }\n  }\n  return 0;\n};\nvar inflate$2 = (strm, flush) => {\n  let state;\n  let input, output;\n  let next;\n  let put;\n  let have, left;\n  let hold;\n  let bits;\n  let _in, _out;\n  let copy;\n  let from;\n  let from_source;\n  let here = 0;\n  let here_bits, here_op, here_val;\n  let last_bits, last_op, last_val;\n  let len;\n  let ret;\n  const hbuf = new Uint8Array(4);\n  let opts;\n  let n;\n  const order = new Uint8Array([16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15]);\n  if (!strm || !strm.state || !strm.output || !strm.input && strm.avail_in !== 0) {\n    return Z_STREAM_ERROR$1;\n  }\n  state = strm.state;\n  if (state.mode === TYPE) {\n    state.mode = TYPEDO;\n  }\n  put = strm.next_out;\n  output = strm.output;\n  left = strm.avail_out;\n  next = strm.next_in;\n  input = strm.input;\n  have = strm.avail_in;\n  hold = state.hold;\n  bits = state.bits;\n  _in = have;\n  _out = left;\n  ret = Z_OK$1;\n  inf_leave:\n    for (; ; ) {\n      switch (state.mode) {\n        case HEAD:\n          if (state.wrap === 0) {\n            state.mode = TYPEDO;\n            break;\n          }\n          while (bits < 16) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          if (state.wrap & 2 && hold === 35615) {\n            state.check = 0;\n            hbuf[0] = hold & 255;\n            hbuf[1] = hold >>> 8 & 255;\n            state.check = crc32_1(state.check, hbuf, 2, 0);\n            hold = 0;\n            bits = 0;\n            state.mode = FLAGS;\n            break;\n          }\n          state.flags = 0;\n          if (state.head) {\n            state.head.done = false;\n          }\n          if (!(state.wrap & 1) || (((hold & 255) << 8) + (hold >> 8)) % 31) {\n            strm.msg = \"incorrect header check\";\n            state.mode = BAD;\n            break;\n          }\n          if ((hold & 15) !== Z_DEFLATED) {\n            strm.msg = \"unknown compression method\";\n            state.mode = BAD;\n            break;\n          }\n          hold >>>= 4;\n          bits -= 4;\n          len = (hold & 15) + 8;\n          if (state.wbits === 0) {\n            state.wbits = len;\n          } else if (len > state.wbits) {\n            strm.msg = \"invalid window size\";\n            state.mode = BAD;\n            break;\n          }\n          state.dmax = 1 << state.wbits;\n          strm.adler = state.check = 1;\n          state.mode = hold & 512 ? DICTID : TYPE;\n          hold = 0;\n          bits = 0;\n          break;\n        case FLAGS:\n          while (bits < 16) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          state.flags = hold;\n          if ((state.flags & 255) !== Z_DEFLATED) {\n            strm.msg = \"unknown compression method\";\n            state.mode = BAD;\n            break;\n          }\n          if (state.flags & 57344) {\n            strm.msg = \"unknown header flags set\";\n            state.mode = BAD;\n            break;\n          }\n          if (state.head) {\n            state.head.text = hold >> 8 & 1;\n          }\n          if (state.flags & 512) {\n            hbuf[0] = hold & 255;\n            hbuf[1] = hold >>> 8 & 255;\n            state.check = crc32_1(state.check, hbuf, 2, 0);\n          }\n          hold = 0;\n          bits = 0;\n          state.mode = TIME;\n        case TIME:\n          while (bits < 32) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          if (state.head) {\n            state.head.time = hold;\n          }\n          if (state.flags & 512) {\n            hbuf[0] = hold & 255;\n            hbuf[1] = hold >>> 8 & 255;\n            hbuf[2] = hold >>> 16 & 255;\n            hbuf[3] = hold >>> 24 & 255;\n            state.check = crc32_1(state.check, hbuf, 4, 0);\n          }\n          hold = 0;\n          bits = 0;\n          state.mode = OS;\n        case OS:\n          while (bits < 16) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          if (state.head) {\n            state.head.xflags = hold & 255;\n            state.head.os = hold >> 8;\n          }\n          if (state.flags & 512) {\n            hbuf[0] = hold & 255;\n            hbuf[1] = hold >>> 8 & 255;\n            state.check = crc32_1(state.check, hbuf, 2, 0);\n          }\n          hold = 0;\n          bits = 0;\n          state.mode = EXLEN;\n        case EXLEN:\n          if (state.flags & 1024) {\n            while (bits < 16) {\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            state.length = hold;\n            if (state.head) {\n              state.head.extra_len = hold;\n            }\n            if (state.flags & 512) {\n              hbuf[0] = hold & 255;\n              hbuf[1] = hold >>> 8 & 255;\n              state.check = crc32_1(state.check, hbuf, 2, 0);\n            }\n            hold = 0;\n            bits = 0;\n          } else if (state.head) {\n            state.head.extra = null;\n          }\n          state.mode = EXTRA;\n        case EXTRA:\n          if (state.flags & 1024) {\n            copy = state.length;\n            if (copy > have) {\n              copy = have;\n            }\n            if (copy) {\n              if (state.head) {\n                len = state.head.extra_len - state.length;\n                if (!state.head.extra) {\n                  state.head.extra = new Uint8Array(state.head.extra_len);\n                }\n                state.head.extra.set(input.subarray(next, next + copy), len);\n              }\n              if (state.flags & 512) {\n                state.check = crc32_1(state.check, input, copy, next);\n              }\n              have -= copy;\n              next += copy;\n              state.length -= copy;\n            }\n            if (state.length) {\n              break inf_leave;\n            }\n          }\n          state.length = 0;\n          state.mode = NAME;\n        case NAME:\n          if (state.flags & 2048) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            copy = 0;\n            do {\n              len = input[next + copy++];\n              if (state.head && len && state.length < 65536) {\n                state.head.name += String.fromCharCode(len);\n              }\n            } while (len && copy < have);\n            if (state.flags & 512) {\n              state.check = crc32_1(state.check, input, copy, next);\n            }\n            have -= copy;\n            next += copy;\n            if (len) {\n              break inf_leave;\n            }\n          } else if (state.head) {\n            state.head.name = null;\n          }\n          state.length = 0;\n          state.mode = COMMENT;\n        case COMMENT:\n          if (state.flags & 4096) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            copy = 0;\n            do {\n              len = input[next + copy++];\n              if (state.head && len && state.length < 65536) {\n                state.head.comment += String.fromCharCode(len);\n              }\n            } while (len && copy < have);\n            if (state.flags & 512) {\n              state.check = crc32_1(state.check, input, copy, next);\n            }\n            have -= copy;\n            next += copy;\n            if (len) {\n              break inf_leave;\n            }\n          } else if (state.head) {\n            state.head.comment = null;\n          }\n          state.mode = HCRC;\n        case HCRC:\n          if (state.flags & 512) {\n            while (bits < 16) {\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            if (hold !== (state.check & 65535)) {\n              strm.msg = \"header crc mismatch\";\n              state.mode = BAD;\n              break;\n            }\n            hold = 0;\n            bits = 0;\n          }\n          if (state.head) {\n            state.head.hcrc = state.flags >> 9 & 1;\n            state.head.done = true;\n          }\n          strm.adler = state.check = 0;\n          state.mode = TYPE;\n          break;\n        case DICTID:\n          while (bits < 32) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          strm.adler = state.check = zswap32(hold);\n          hold = 0;\n          bits = 0;\n          state.mode = DICT;\n        case DICT:\n          if (state.havedict === 0) {\n            strm.next_out = put;\n            strm.avail_out = left;\n            strm.next_in = next;\n            strm.avail_in = have;\n            state.hold = hold;\n            state.bits = bits;\n            return Z_NEED_DICT$1;\n          }\n          strm.adler = state.check = 1;\n          state.mode = TYPE;\n        case TYPE:\n          if (flush === Z_BLOCK || flush === Z_TREES) {\n            break inf_leave;\n          }\n        case TYPEDO:\n          if (state.last) {\n            hold >>>= bits & 7;\n            bits -= bits & 7;\n            state.mode = CHECK;\n            break;\n          }\n          while (bits < 3) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          state.last = hold & 1;\n          hold >>>= 1;\n          bits -= 1;\n          switch (hold & 3) {\n            case 0:\n              state.mode = STORED;\n              break;\n            case 1:\n              fixedtables(state);\n              state.mode = LEN_;\n              if (flush === Z_TREES) {\n                hold >>>= 2;\n                bits -= 2;\n                break inf_leave;\n              }\n              break;\n            case 2:\n              state.mode = TABLE;\n              break;\n            case 3:\n              strm.msg = \"invalid block type\";\n              state.mode = BAD;\n          }\n          hold >>>= 2;\n          bits -= 2;\n          break;\n        case STORED:\n          hold >>>= bits & 7;\n          bits -= bits & 7;\n          while (bits < 32) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          if ((hold & 65535) !== (hold >>> 16 ^ 65535)) {\n            strm.msg = \"invalid stored block lengths\";\n            state.mode = BAD;\n            break;\n          }\n          state.length = hold & 65535;\n          hold = 0;\n          bits = 0;\n          state.mode = COPY_;\n          if (flush === Z_TREES) {\n            break inf_leave;\n          }\n        case COPY_:\n          state.mode = COPY;\n        case COPY:\n          copy = state.length;\n          if (copy) {\n            if (copy > have) {\n              copy = have;\n            }\n            if (copy > left) {\n              copy = left;\n            }\n            if (copy === 0) {\n              break inf_leave;\n            }\n            output.set(input.subarray(next, next + copy), put);\n            have -= copy;\n            next += copy;\n            left -= copy;\n            put += copy;\n            state.length -= copy;\n            break;\n          }\n          state.mode = TYPE;\n          break;\n        case TABLE:\n          while (bits < 14) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          state.nlen = (hold & 31) + 257;\n          hold >>>= 5;\n          bits -= 5;\n          state.ndist = (hold & 31) + 1;\n          hold >>>= 5;\n          bits -= 5;\n          state.ncode = (hold & 15) + 4;\n          hold >>>= 4;\n          bits -= 4;\n          if (state.nlen > 286 || state.ndist > 30) {\n            strm.msg = \"too many length or distance symbols\";\n            state.mode = BAD;\n            break;\n          }\n          state.have = 0;\n          state.mode = LENLENS;\n        case LENLENS:\n          while (state.have < state.ncode) {\n            while (bits < 3) {\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            state.lens[order[state.have++]] = hold & 7;\n            hold >>>= 3;\n            bits -= 3;\n          }\n          while (state.have < 19) {\n            state.lens[order[state.have++]] = 0;\n          }\n          state.lencode = state.lendyn;\n          state.lenbits = 7;\n          opts = { bits: state.lenbits };\n          ret = inftrees(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts);\n          state.lenbits = opts.bits;\n          if (ret) {\n            strm.msg = \"invalid code lengths set\";\n            state.mode = BAD;\n            break;\n          }\n          state.have = 0;\n          state.mode = CODELENS;\n        case CODELENS:\n          while (state.have < state.nlen + state.ndist) {\n            for (; ; ) {\n              here = state.lencode[hold & (1 << state.lenbits) - 1];\n              here_bits = here >>> 24;\n              here_op = here >>> 16 & 255;\n              here_val = here & 65535;\n              if (here_bits <= bits) {\n                break;\n              }\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            if (here_val < 16) {\n              hold >>>= here_bits;\n              bits -= here_bits;\n              state.lens[state.have++] = here_val;\n            } else {\n              if (here_val === 16) {\n                n = here_bits + 2;\n                while (bits < n) {\n                  if (have === 0) {\n                    break inf_leave;\n                  }\n                  have--;\n                  hold += input[next++] << bits;\n                  bits += 8;\n                }\n                hold >>>= here_bits;\n                bits -= here_bits;\n                if (state.have === 0) {\n                  strm.msg = \"invalid bit length repeat\";\n                  state.mode = BAD;\n                  break;\n                }\n                len = state.lens[state.have - 1];\n                copy = 3 + (hold & 3);\n                hold >>>= 2;\n                bits -= 2;\n              } else if (here_val === 17) {\n                n = here_bits + 3;\n                while (bits < n) {\n                  if (have === 0) {\n                    break inf_leave;\n                  }\n                  have--;\n                  hold += input[next++] << bits;\n                  bits += 8;\n                }\n                hold >>>= here_bits;\n                bits -= here_bits;\n                len = 0;\n                copy = 3 + (hold & 7);\n                hold >>>= 3;\n                bits -= 3;\n              } else {\n                n = here_bits + 7;\n                while (bits < n) {\n                  if (have === 0) {\n                    break inf_leave;\n                  }\n                  have--;\n                  hold += input[next++] << bits;\n                  bits += 8;\n                }\n                hold >>>= here_bits;\n                bits -= here_bits;\n                len = 0;\n                copy = 11 + (hold & 127);\n                hold >>>= 7;\n                bits -= 7;\n              }\n              if (state.have + copy > state.nlen + state.ndist) {\n                strm.msg = \"invalid bit length repeat\";\n                state.mode = BAD;\n                break;\n              }\n              while (copy--) {\n                state.lens[state.have++] = len;\n              }\n            }\n          }\n          if (state.mode === BAD) {\n            break;\n          }\n          if (state.lens[256] === 0) {\n            strm.msg = \"invalid code -- missing end-of-block\";\n            state.mode = BAD;\n            break;\n          }\n          state.lenbits = 9;\n          opts = { bits: state.lenbits };\n          ret = inftrees(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts);\n          state.lenbits = opts.bits;\n          if (ret) {\n            strm.msg = \"invalid literal/lengths set\";\n            state.mode = BAD;\n            break;\n          }\n          state.distbits = 6;\n          state.distcode = state.distdyn;\n          opts = { bits: state.distbits };\n          ret = inftrees(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts);\n          state.distbits = opts.bits;\n          if (ret) {\n            strm.msg = \"invalid distances set\";\n            state.mode = BAD;\n            break;\n          }\n          state.mode = LEN_;\n          if (flush === Z_TREES) {\n            break inf_leave;\n          }\n        case LEN_:\n          state.mode = LEN;\n        case LEN:\n          if (have >= 6 && left >= 258) {\n            strm.next_out = put;\n            strm.avail_out = left;\n            strm.next_in = next;\n            strm.avail_in = have;\n            state.hold = hold;\n            state.bits = bits;\n            inffast(strm, _out);\n            put = strm.next_out;\n            output = strm.output;\n            left = strm.avail_out;\n            next = strm.next_in;\n            input = strm.input;\n            have = strm.avail_in;\n            hold = state.hold;\n            bits = state.bits;\n            if (state.mode === TYPE) {\n              state.back = -1;\n            }\n            break;\n          }\n          state.back = 0;\n          for (; ; ) {\n            here = state.lencode[hold & (1 << state.lenbits) - 1];\n            here_bits = here >>> 24;\n            here_op = here >>> 16 & 255;\n            here_val = here & 65535;\n            if (here_bits <= bits) {\n              break;\n            }\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          if (here_op && (here_op & 240) === 0) {\n            last_bits = here_bits;\n            last_op = here_op;\n            last_val = here_val;\n            for (; ; ) {\n              here = state.lencode[last_val + ((hold & (1 << last_bits + last_op) - 1) >> last_bits)];\n              here_bits = here >>> 24;\n              here_op = here >>> 16 & 255;\n              here_val = here & 65535;\n              if (last_bits + here_bits <= bits) {\n                break;\n              }\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            hold >>>= last_bits;\n            bits -= last_bits;\n            state.back += last_bits;\n          }\n          hold >>>= here_bits;\n          bits -= here_bits;\n          state.back += here_bits;\n          state.length = here_val;\n          if (here_op === 0) {\n            state.mode = LIT;\n            break;\n          }\n          if (here_op & 32) {\n            state.back = -1;\n            state.mode = TYPE;\n            break;\n          }\n          if (here_op & 64) {\n            strm.msg = \"invalid literal/length code\";\n            state.mode = BAD;\n            break;\n          }\n          state.extra = here_op & 15;\n          state.mode = LENEXT;\n        case LENEXT:\n          if (state.extra) {\n            n = state.extra;\n            while (bits < n) {\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            state.length += hold & (1 << state.extra) - 1;\n            hold >>>= state.extra;\n            bits -= state.extra;\n            state.back += state.extra;\n          }\n          state.was = state.length;\n          state.mode = DIST;\n        case DIST:\n          for (; ; ) {\n            here = state.distcode[hold & (1 << state.distbits) - 1];\n            here_bits = here >>> 24;\n            here_op = here >>> 16 & 255;\n            here_val = here & 65535;\n            if (here_bits <= bits) {\n              break;\n            }\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          if ((here_op & 240) === 0) {\n            last_bits = here_bits;\n            last_op = here_op;\n            last_val = here_val;\n            for (; ; ) {\n              here = state.distcode[last_val + ((hold & (1 << last_bits + last_op) - 1) >> last_bits)];\n              here_bits = here >>> 24;\n              here_op = here >>> 16 & 255;\n              here_val = here & 65535;\n              if (last_bits + here_bits <= bits) {\n                break;\n              }\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            hold >>>= last_bits;\n            bits -= last_bits;\n            state.back += last_bits;\n          }\n          hold >>>= here_bits;\n          bits -= here_bits;\n          state.back += here_bits;\n          if (here_op & 64) {\n            strm.msg = \"invalid distance code\";\n            state.mode = BAD;\n            break;\n          }\n          state.offset = here_val;\n          state.extra = here_op & 15;\n          state.mode = DISTEXT;\n        case DISTEXT:\n          if (state.extra) {\n            n = state.extra;\n            while (bits < n) {\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            state.offset += hold & (1 << state.extra) - 1;\n            hold >>>= state.extra;\n            bits -= state.extra;\n            state.back += state.extra;\n          }\n          if (state.offset > state.dmax) {\n            strm.msg = \"invalid distance too far back\";\n            state.mode = BAD;\n            break;\n          }\n          state.mode = MATCH;\n        case MATCH:\n          if (left === 0) {\n            break inf_leave;\n          }\n          copy = _out - left;\n          if (state.offset > copy) {\n            copy = state.offset - copy;\n            if (copy > state.whave) {\n              if (state.sane) {\n                strm.msg = \"invalid distance too far back\";\n                state.mode = BAD;\n                break;\n              }\n            }\n            if (copy > state.wnext) {\n              copy -= state.wnext;\n              from = state.wsize - copy;\n            } else {\n              from = state.wnext - copy;\n            }\n            if (copy > state.length) {\n              copy = state.length;\n            }\n            from_source = state.window;\n          } else {\n            from_source = output;\n            from = put - state.offset;\n            copy = state.length;\n          }\n          if (copy > left) {\n            copy = left;\n          }\n          left -= copy;\n          state.length -= copy;\n          do {\n            output[put++] = from_source[from++];\n          } while (--copy);\n          if (state.length === 0) {\n            state.mode = LEN;\n          }\n          break;\n        case LIT:\n          if (left === 0) {\n            break inf_leave;\n          }\n          output[put++] = state.length;\n          left--;\n          state.mode = LEN;\n          break;\n        case CHECK:\n          if (state.wrap) {\n            while (bits < 32) {\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold |= input[next++] << bits;\n              bits += 8;\n            }\n            _out -= left;\n            strm.total_out += _out;\n            state.total += _out;\n            if (_out) {\n              strm.adler = state.check = state.flags ? crc32_1(state.check, output, _out, put - _out) : adler32_1(state.check, output, _out, put - _out);\n            }\n            _out = left;\n            if ((state.flags ? hold : zswap32(hold)) !== state.check) {\n              strm.msg = \"incorrect data check\";\n              state.mode = BAD;\n              break;\n            }\n            hold = 0;\n            bits = 0;\n          }\n          state.mode = LENGTH;\n        case LENGTH:\n          if (state.wrap && state.flags) {\n            while (bits < 32) {\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            if (hold !== (state.total & 4294967295)) {\n              strm.msg = \"incorrect length check\";\n              state.mode = BAD;\n              break;\n            }\n            hold = 0;\n            bits = 0;\n          }\n          state.mode = DONE;\n        case DONE:\n          ret = Z_STREAM_END$1;\n          break inf_leave;\n        case BAD:\n          ret = Z_DATA_ERROR$1;\n          break inf_leave;\n        case MEM:\n          return Z_MEM_ERROR$1;\n        case SYNC:\n        default:\n          return Z_STREAM_ERROR$1;\n      }\n    }\n  strm.next_out = put;\n  strm.avail_out = left;\n  strm.next_in = next;\n  strm.avail_in = have;\n  state.hold = hold;\n  state.bits = bits;\n  if (state.wsize || _out !== strm.avail_out && state.mode < BAD && (state.mode < CHECK || flush !== Z_FINISH$1)) {\n    if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out))\n      ;\n  }\n  _in -= strm.avail_in;\n  _out -= strm.avail_out;\n  strm.total_in += _in;\n  strm.total_out += _out;\n  state.total += _out;\n  if (state.wrap && _out) {\n    strm.adler = state.check = state.flags ? crc32_1(state.check, output, _out, strm.next_out - _out) : adler32_1(state.check, output, _out, strm.next_out - _out);\n  }\n  strm.data_type = state.bits + (state.last ? 64 : 0) + (state.mode === TYPE ? 128 : 0) + (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0);\n  if ((_in === 0 && _out === 0 || flush === Z_FINISH$1) && ret === Z_OK$1) {\n    ret = Z_BUF_ERROR;\n  }\n  return ret;\n};\nvar inflateEnd = (strm) => {\n  if (!strm || !strm.state) {\n    return Z_STREAM_ERROR$1;\n  }\n  let state = strm.state;\n  if (state.window) {\n    state.window = null;\n  }\n  strm.state = null;\n  return Z_OK$1;\n};\nvar inflateGetHeader = (strm, head) => {\n  if (!strm || !strm.state) {\n    return Z_STREAM_ERROR$1;\n  }\n  const state = strm.state;\n  if ((state.wrap & 2) === 0) {\n    return Z_STREAM_ERROR$1;\n  }\n  state.head = head;\n  head.done = false;\n  return Z_OK$1;\n};\nvar inflateSetDictionary = (strm, dictionary) => {\n  const dictLength = dictionary.length;\n  let state;\n  let dictid;\n  let ret;\n  if (!strm || !strm.state) {\n    return Z_STREAM_ERROR$1;\n  }\n  state = strm.state;\n  if (state.wrap !== 0 && state.mode !== DICT) {\n    return Z_STREAM_ERROR$1;\n  }\n  if (state.mode === DICT) {\n    dictid = 1;\n    dictid = adler32_1(dictid, dictionary, dictLength, 0);\n    if (dictid !== state.check) {\n      return Z_DATA_ERROR$1;\n    }\n  }\n  ret = updatewindow(strm, dictionary, dictLength, dictLength);\n  if (ret) {\n    state.mode = MEM;\n    return Z_MEM_ERROR$1;\n  }\n  state.havedict = 1;\n  return Z_OK$1;\n};\nvar inflateReset_1 = inflateReset;\nvar inflateReset2_1 = inflateReset2;\nvar inflateResetKeep_1 = inflateResetKeep;\nvar inflateInit_1 = inflateInit;\nvar inflateInit2_1 = inflateInit2;\nvar inflate_2$1 = inflate$2;\nvar inflateEnd_1 = inflateEnd;\nvar inflateGetHeader_1 = inflateGetHeader;\nvar inflateSetDictionary_1 = inflateSetDictionary;\nvar inflateInfo = \"pako inflate (from Nodeca project)\";\nvar inflate_1$2 = {\n  inflateReset: inflateReset_1,\n  inflateReset2: inflateReset2_1,\n  inflateResetKeep: inflateResetKeep_1,\n  inflateInit: inflateInit_1,\n  inflateInit2: inflateInit2_1,\n  inflate: inflate_2$1,\n  inflateEnd: inflateEnd_1,\n  inflateGetHeader: inflateGetHeader_1,\n  inflateSetDictionary: inflateSetDictionary_1,\n  inflateInfo\n};\nfunction GZheader() {\n  this.text = 0;\n  this.time = 0;\n  this.xflags = 0;\n  this.os = 0;\n  this.extra = null;\n  this.extra_len = 0;\n  this.name = \"\";\n  this.comment = \"\";\n  this.hcrc = 0;\n  this.done = false;\n}\nvar gzheader = GZheader;\nvar toString = Object.prototype.toString;\nvar {\n  Z_NO_FLUSH,\n  Z_FINISH,\n  Z_OK,\n  Z_STREAM_END,\n  Z_NEED_DICT,\n  Z_STREAM_ERROR,\n  Z_DATA_ERROR,\n  Z_MEM_ERROR\n} = constants$2;\nfunction Inflate$1(options) {\n  this.options = common.assign({\n    chunkSize: 1024 * 64,\n    windowBits: 15,\n    to: \"\"\n  }, options || {});\n  const opt = this.options;\n  if (opt.raw && opt.windowBits >= 0 && opt.windowBits < 16) {\n    opt.windowBits = -opt.windowBits;\n    if (opt.windowBits === 0) {\n      opt.windowBits = -15;\n    }\n  }\n  if (opt.windowBits >= 0 && opt.windowBits < 16 && !(options && options.windowBits)) {\n    opt.windowBits += 32;\n  }\n  if (opt.windowBits > 15 && opt.windowBits < 48) {\n    if ((opt.windowBits & 15) === 0) {\n      opt.windowBits |= 15;\n    }\n  }\n  this.err = 0;\n  this.msg = \"\";\n  this.ended = false;\n  this.chunks = [];\n  this.strm = new zstream();\n  this.strm.avail_out = 0;\n  let status = inflate_1$2.inflateInit2(this.strm, opt.windowBits);\n  if (status !== Z_OK) {\n    throw new Error(messages[status]);\n  }\n  this.header = new gzheader();\n  inflate_1$2.inflateGetHeader(this.strm, this.header);\n  if (opt.dictionary) {\n    if (typeof opt.dictionary === \"string\") {\n      opt.dictionary = strings.string2buf(opt.dictionary);\n    } else if (toString.call(opt.dictionary) === \"[object ArrayBuffer]\") {\n      opt.dictionary = new Uint8Array(opt.dictionary);\n    }\n    if (opt.raw) {\n      status = inflate_1$2.inflateSetDictionary(this.strm, opt.dictionary);\n      if (status !== Z_OK) {\n        throw new Error(messages[status]);\n      }\n    }\n  }\n}\nInflate$1.prototype.push = function(data, flush_mode) {\n  const strm = this.strm;\n  const chunkSize = this.options.chunkSize;\n  const dictionary = this.options.dictionary;\n  let status, _flush_mode, last_avail_out;\n  if (this.ended)\n    return false;\n  if (flush_mode === ~~flush_mode)\n    _flush_mode = flush_mode;\n  else\n    _flush_mode = flush_mode === true ? Z_FINISH : Z_NO_FLUSH;\n  if (toString.call(data) === \"[object ArrayBuffer]\") {\n    strm.input = new Uint8Array(data);\n  } else {\n    strm.input = data;\n  }\n  strm.next_in = 0;\n  strm.avail_in = strm.input.length;\n  for (; ; ) {\n    if (strm.avail_out === 0) {\n      strm.output = new Uint8Array(chunkSize);\n      strm.next_out = 0;\n      strm.avail_out = chunkSize;\n    }\n    status = inflate_1$2.inflate(strm, _flush_mode);\n    if (status === Z_NEED_DICT && dictionary) {\n      status = inflate_1$2.inflateSetDictionary(strm, dictionary);\n      if (status === Z_OK) {\n        status = inflate_1$2.inflate(strm, _flush_mode);\n      } else if (status === Z_DATA_ERROR) {\n        status = Z_NEED_DICT;\n      }\n    }\n    while (strm.avail_in > 0 && status === Z_STREAM_END && strm.state.wrap > 0 && data[strm.next_in] !== 0) {\n      inflate_1$2.inflateReset(strm);\n      status = inflate_1$2.inflate(strm, _flush_mode);\n    }\n    switch (status) {\n      case Z_STREAM_ERROR:\n      case Z_DATA_ERROR:\n      case Z_NEED_DICT:\n      case Z_MEM_ERROR:\n        this.onEnd(status);\n        this.ended = true;\n        return false;\n    }\n    last_avail_out = strm.avail_out;\n    if (strm.next_out) {\n      if (strm.avail_out === 0 || status === Z_STREAM_END) {\n        if (this.options.to === \"string\") {\n          let next_out_utf8 = strings.utf8border(strm.output, strm.next_out);\n          let tail = strm.next_out - next_out_utf8;\n          let utf8str = strings.buf2string(strm.output, next_out_utf8);\n          strm.next_out = tail;\n          strm.avail_out = chunkSize - tail;\n          if (tail)\n            strm.output.set(strm.output.subarray(next_out_utf8, next_out_utf8 + tail), 0);\n          this.onData(utf8str);\n        } else {\n          this.onData(strm.output.length === strm.next_out ? strm.output : strm.output.subarray(0, strm.next_out));\n        }\n      }\n    }\n    if (status === Z_OK && last_avail_out === 0)\n      continue;\n    if (status === Z_STREAM_END) {\n      status = inflate_1$2.inflateEnd(this.strm);\n      this.onEnd(status);\n      this.ended = true;\n      return true;\n    }\n    if (strm.avail_in === 0)\n      break;\n  }\n  return true;\n};\nInflate$1.prototype.onData = function(chunk) {\n  this.chunks.push(chunk);\n};\nInflate$1.prototype.onEnd = function(status) {\n  if (status === Z_OK) {\n    if (this.options.to === \"string\") {\n      this.result = this.chunks.join(\"\");\n    } else {\n      this.result = common.flattenChunks(this.chunks);\n    }\n  }\n  this.chunks = [];\n  this.err = status;\n  this.msg = this.strm.msg;\n};\nfunction inflate$1(input, options) {\n  const inflator = new Inflate$1(options);\n  inflator.push(input);\n  if (inflator.err)\n    throw inflator.msg || messages[inflator.err];\n  return inflator.result;\n}\nfunction inflateRaw$1(input, options) {\n  options = options || {};\n  options.raw = true;\n  return inflate$1(input, options);\n}\nvar Inflate_1$1 = Inflate$1;\nvar inflate_2 = inflate$1;\nvar inflateRaw_1$1 = inflateRaw$1;\nvar ungzip$1 = inflate$1;\nvar constants = constants$2;\nvar inflate_1$1 = {\n  Inflate: Inflate_1$1,\n  inflate: inflate_2,\n  inflateRaw: inflateRaw_1$1,\n  ungzip: ungzip$1,\n  constants\n};\nvar { Inflate, inflate, inflateRaw, ungzip } = inflate_1$1;\nvar inflate_1 = inflate;\nvar ungzip_1 = ungzip;\n\n// esm/filters.js\nvar zlib_decompress = function(buf, itemsize) {\n  let input_array = new Uint8Array(buf);\n  return inflate_1(input_array).buffer;\n};\nvar unshuffle = function(buf, itemsize) {\n  let buffer_size = buf.byteLength;\n  let unshuffled_view = new Uint8Array(buffer_size);\n  let step = Math.floor(buffer_size / itemsize);\n  let shuffled_view = new DataView(buf);\n  for (var j = 0; j < itemsize; j++) {\n    for (var i = 0; i < step; i++) {\n      unshuffled_view[j + i * itemsize] = shuffled_view.getUint8(j * step + i);\n    }\n  }\n  return unshuffled_view.buffer;\n};\nvar fletch32 = function(buf, itemsize) {\n  _verify_fletcher32(buf);\n  return buf.slice(0, -4);\n};\nfunction _verify_fletcher32(chunk_buffer) {\n  var odd_chunk_buffer = chunk_buffer.byteLength % 2 != 0;\n  var data_length = chunk_buffer.byteLength - 4;\n  var view = new DataView(chunk_buffer);\n  var sum1 = 0;\n  var sum2 = 0;\n  for (var offset = 0; offset < data_length - 1; offset += 2) {\n    let datum = view.getUint16(offset, true);\n    sum1 = (sum1 + datum) % 65535;\n    sum2 = (sum2 + sum1) % 65535;\n  }\n  if (odd_chunk_buffer) {\n    let datum = view.getUint8(data_length - 1);\n    sum1 = (sum1 + datum) % 65535;\n    sum2 = (sum2 + sum1) % 65535;\n  }\n  var [ref_sum1, ref_sum2] = struct.unpack_from(\">HH\", chunk_buffer, data_length);\n  ref_sum1 = ref_sum1 % 65535;\n  ref_sum2 = ref_sum2 % 65535;\n  if (sum1 != ref_sum1 || sum2 != ref_sum2) {\n    throw 'ValueError(\"fletcher32 checksum invalid\")';\n  }\n  return true;\n}\nvar GZIP_DEFLATE_FILTER = 1;\nvar SHUFFLE_FILTER = 2;\nvar FLETCH32_FILTER = 3;\nvar Filters = /* @__PURE__ */ new Map([\n  [GZIP_DEFLATE_FILTER, zlib_decompress],\n  [SHUFFLE_FILTER, unshuffle],\n  [FLETCH32_FILTER, fletch32]\n]);\n\n// esm/btree.js\nvar AbstractBTree = class {\n  constructor(fh, offset) {\n    this.fh = fh;\n    this.offset = offset;\n    this.depth = null;\n  }\n  async init() {\n    this.all_nodes = /* @__PURE__ */ new Map();\n    await this._read_root_node();\n    await this._read_children();\n  }\n  async _read_children() {\n    let node_level = this.depth;\n    while (node_level > 0) {\n      for (var parent_node of this.all_nodes.get(node_level)) {\n        for (var child_addr of parent_node.get(\"addresses\")) {\n          this._add_node(await this._read_node(child_addr, node_level - 1));\n        }\n      }\n      node_level--;\n    }\n  }\n  async _read_root_node() {\n    let root_node = await this._read_node(this.offset, null);\n    this._add_node(root_node);\n    this.depth = root_node.get(\"node_level\");\n  }\n  _add_node(node) {\n    let node_level = node.get(\"node_level\");\n    if (this.all_nodes.has(node_level)) {\n      this.all_nodes.get(node_level).push(node);\n    } else {\n      this.all_nodes.set(node_level, [node]);\n    }\n  }\n  async _read_node(offset, node_level) {\n    let node = await this._read_node_header(offset, node_level);\n    node.set(\"keys\", []);\n    node.set(\"addresses\", []);\n    return node;\n  }\n  async _read_node_header(offset) {\n    throw \"NotImplementedError: must define _read_node_header in implementation class\";\n  }\n};\nvar BTreeV1 = class extends AbstractBTree {\n  B_LINK_NODE = /* @__PURE__ */ new Map([\n    [\"signature\", \"4s\"],\n    [\"node_type\", \"B\"],\n    [\"node_level\", \"B\"],\n    [\"entries_used\", \"H\"],\n    [\"left_sibling\", \"Q\"],\n    [\"right_sibling\", \"Q\"]\n  ]);\n  async _read_node_header(offset, node_level) {\n    let node = await _unpack_struct_from_async(this.B_LINK_NODE, this.fh, offset);\n    if (node_level != null) {\n      if (node.get(\"node_level\") != node_level) {\n        throw \"node level does not match\";\n      }\n    }\n    return node;\n  }\n};\nvar BTreeV1Groups = class extends BTreeV1 {\n  NODE_TYPE = 0;\n  constructor(fh, offset) {\n    super(fh, offset);\n    this.ready = this.init();\n  }\n  async _read_node(offset, node_level) {\n    let node = await this._read_node_header(offset, node_level);\n    offset += _structure_size(this.B_LINK_NODE);\n    let keys = [];\n    let addresses = [];\n    let entries_used = node.get(\"entries_used\");\n    for (var i = 0; i < entries_used; i++) {\n      let key = (await struct.unpack_from_async(\"<Q\", this.fh, offset))[0];\n      offset += 8;\n      let address = (await struct.unpack_from_async(\"<Q\", this.fh, offset))[0];\n      offset += 8;\n      keys.push(key);\n      addresses.push(address);\n    }\n    keys.push((await struct.unpack_from_async(\"<Q\", this.fh, offset))[0]);\n    node.set(\"keys\", keys);\n    node.set(\"addresses\", addresses);\n    return node;\n  }\n  symbol_table_addresses() {\n    var all_address = [];\n    var root_nodes = this.all_nodes.get(0);\n    for (var node of root_nodes) {\n      all_address = all_address.concat(node.get(\"addresses\"));\n    }\n    return all_address;\n  }\n};\nvar BTreeV1RawDataChunks = class extends BTreeV1 {\n  NODE_TYPE = 1;\n  constructor(fh, offset, dims) {\n    super(fh, offset);\n    this.dims = dims;\n    this.ready = this.init();\n  }\n  async _read_node(offset, node_level) {\n    let node = await this._read_node_header(offset, node_level);\n    offset += _structure_size(this.B_LINK_NODE);\n    var keys = [];\n    var addresses = [];\n    let entries_used = node.get(\"entries_used\");\n    for (var i = 0; i < entries_used; i++) {\n      let [chunk_size, filter_mask] = await struct.unpack_from_async(\"<II\", this.fh, offset);\n      offset += 8;\n      let fmt = \"<\" + this.dims.toFixed() + \"Q\";\n      let fmt_size = struct.calcsize(fmt);\n      let chunk_offset = await struct.unpack_from_async(fmt, this.fh, offset);\n      offset += fmt_size;\n      let chunk_address = (await struct.unpack_from_async(\"<Q\", this.fh, offset))[0];\n      offset += 8;\n      keys.push(/* @__PURE__ */ new Map([\n        [\"chunk_size\", chunk_size],\n        [\"filter_mask\", filter_mask],\n        [\"chunk_offset\", chunk_offset]\n      ]));\n      addresses.push(chunk_address);\n    }\n    node.set(\"keys\", keys);\n    node.set(\"addresses\", addresses);\n    return node;\n  }\n  async construct_data_from_chunks(chunk_shape, data_shape, dtype, filter_pipeline) {\n    var item_getter, item_big_endian, item_size;\n    if (dtype instanceof Array) {\n      let dtype_class = dtype[0];\n      if (dtype_class == \"REFERENCE\") {\n        let size = dtype[1];\n        if (size != 8) {\n          throw \"NotImplementedError('Unsupported Reference type')\";\n        }\n        var dtype = \"<u8\";\n        item_getter = \"getUint64\";\n        item_big_endian = false;\n        item_size = 8;\n      } else if (dtype_class == \"VLEN_STRING\" || dtype_class == \"VLEN_SEQUENCE\") {\n        item_getter = \"getVLENStruct\";\n        item_big_endian = false;\n        item_size = 16;\n      } else {\n        throw \"NotImplementedError('datatype not implemented')\";\n      }\n    } else {\n      [item_getter, item_big_endian, item_size] = dtype_getter(dtype);\n    }\n    var data_size = data_shape.reduce(function(a, b) {\n      return a * b;\n    }, 1);\n    var chunk_size = chunk_shape.reduce(function(a, b) {\n      return a * b;\n    }, 1);\n    let dims = data_shape.length;\n    var current_stride = 1;\n    chunk_shape.slice().map(function(d2) {\n      let s = current_stride;\n      current_stride *= d2;\n      return s;\n    });\n    var current_stride = 1;\n    var data_strides = data_shape.slice().reverse().map(function(d2) {\n      let s = current_stride;\n      current_stride *= d2;\n      return s;\n    }).reverse();\n    var data = new Array(data_size);\n    let chunk_buffer_size = chunk_size * item_size;\n    for (var node of this.all_nodes.get(0)) {\n      let node_keys = node.get(\"keys\");\n      let node_addresses = node.get(\"addresses\");\n      let nkeys = node_keys.length;\n      for (var ik = 0; ik < nkeys; ik++) {\n        let node_key = node_keys[ik];\n        let addr = node_addresses[ik];\n        var chunk_buffer;\n        if (filter_pipeline == null) {\n          chunk_buffer = await this.fh.slice(addr, addr + chunk_buffer_size);\n        } else {\n          chunk_buffer = await this.fh.slice(addr, addr + node_key.get(\"chunk_size\"));\n          let filter_mask = node_key.get(\"filter_mask\");\n          chunk_buffer = this._filter_chunk(chunk_buffer, filter_mask, filter_pipeline, item_size);\n        }\n        var chunk_offset = node_key.get(\"chunk_offset\").slice();\n        var apos = chunk_offset.slice();\n        var cpos = apos.map(function() {\n          return 0;\n        });\n        var cview = new DataView64(chunk_buffer);\n        for (var ci = 0; ci < chunk_size; ci++) {\n          for (var d = dims - 1; d >= 0; d--) {\n            if (cpos[d] >= chunk_shape[d]) {\n              cpos[d] = 0;\n              apos[d] = chunk_offset[d];\n              if (d > 0) {\n                cpos[d - 1] += 1;\n                apos[d - 1] += 1;\n              }\n            } else {\n              break;\n            }\n          }\n          let inbounds = apos.slice(0, -1).every(function(p, d2) {\n            return p < data_shape[d2];\n          });\n          if (inbounds) {\n            let cb_offset = ci * item_size;\n            let datum = cview[item_getter](cb_offset, !item_big_endian, item_size);\n            let ai = apos.slice(0, -1).reduce(function(prev, curr, index) {\n              return curr * data_strides[index] + prev;\n            }, 0);\n            data[ai] = datum;\n          }\n          cpos[dims - 1] += 1;\n          apos[dims - 1] += 1;\n        }\n      }\n    }\n    return data;\n  }\n  _filter_chunk(chunk_buffer, filter_mask, filter_pipeline, itemsize) {\n    let num_filters = filter_pipeline.length;\n    let buf = chunk_buffer.slice();\n    for (var filter_index = num_filters - 1; filter_index >= 0; filter_index--) {\n      if (filter_mask & 1 << filter_index) {\n        continue;\n      }\n      let pipeline_entry = filter_pipeline[filter_index];\n      let filter_id = pipeline_entry.get(\"filter_id\");\n      let client_data = pipeline_entry.get(\"client_data\");\n      if (Filters.has(filter_id)) {\n        buf = Filters.get(filter_id)(buf, itemsize, client_data);\n      } else {\n        throw 'NotImplementedError(\"Filter with id:' + filter_id.toFixed() + ' not supported\")';\n      }\n    }\n    return buf;\n  }\n};\nvar BTreeV2 = class extends AbstractBTree {\n  B_TREE_HEADER = /* @__PURE__ */ new Map([\n    [\"signature\", \"4s\"],\n    [\"version\", \"B\"],\n    [\"node_type\", \"B\"],\n    [\"node_size\", \"I\"],\n    [\"record_size\", \"H\"],\n    [\"depth\", \"H\"],\n    [\"split_percent\", \"B\"],\n    [\"merge_percent\", \"B\"],\n    [\"root_address\", \"Q\"],\n    [\"root_nrecords\", \"H\"],\n    [\"total_nrecords\", \"Q\"]\n  ]);\n  B_LINK_NODE = /* @__PURE__ */ new Map([\n    [\"signature\", \"4s\"],\n    [\"version\", \"B\"],\n    [\"node_type\", \"B\"]\n  ]);\n  constructor(fh, offset) {\n    super(fh, offset);\n    this.ready = this.init();\n  }\n  async _read_root_node() {\n    let h = await this._read_tree_header(this.offset);\n    this.address_formats = this._calculate_address_formats(h);\n    this.header = h;\n    this.depth = h.get(\"depth\");\n    let address = [h.get(\"root_address\"), h.get(\"root_nrecords\"), h.get(\"total_nrecords\")];\n    let root_node = await this._read_node(address, this.depth);\n    this._add_node(root_node);\n  }\n  async _read_tree_header(offset) {\n    let header = await _unpack_struct_from_async(this.B_TREE_HEADER, this.fh, this.offset);\n    return header;\n  }\n  _calculate_address_formats(header) {\n    let node_size = header.get(\"node_size\");\n    let record_size = header.get(\"record_size\");\n    let nrecords_max = 0;\n    let ntotalrecords_max = 0;\n    let address_formats = /* @__PURE__ */ new Map();\n    let max_depth = header.get(\"depth\");\n    for (var node_level = 0; node_level <= max_depth; node_level++) {\n      let offset_fmt = \"\";\n      let num1_fmt = \"\";\n      let num2_fmt = \"\";\n      let offset_size, num1_size, num2_size;\n      if (node_level == 0) {\n        offset_size = 0;\n        num1_size = 0;\n        num2_size = 0;\n      } else if (node_level == 1) {\n        offset_size = 8;\n        offset_fmt = \"<Q\";\n        num1_size = this._required_bytes(nrecords_max);\n        num1_fmt = this._int_format(num1_size);\n        num2_size = 0;\n      } else {\n        offset_size = 8;\n        offset_fmt = \"<Q\";\n        num1_size = this._required_bytes(nrecords_max);\n        num1_fmt = this._int_format(num1_size);\n        num2_size = this._required_bytes(ntotalrecords_max);\n        num2_fmt = this._int_format(num2_size);\n      }\n      address_formats.set(node_level, [\n        offset_size,\n        num1_size,\n        num2_size,\n        offset_fmt,\n        num1_fmt,\n        num2_fmt\n      ]);\n      if (node_level < max_depth) {\n        let addr_size = offset_size + num1_size + num2_size;\n        nrecords_max = this._nrecords_max(node_size, record_size, addr_size);\n        if (ntotalrecords_max > 0) {\n          ntotalrecords_max *= nrecords_max;\n        } else {\n          ntotalrecords_max = nrecords_max;\n        }\n      }\n    }\n    return address_formats;\n  }\n  _nrecords_max(node_size, record_size, addr_size) {\n    return Math.floor((node_size - 10 - addr_size) / (record_size + addr_size));\n  }\n  _required_bytes(integer) {\n    return Math.ceil(bitSize(integer) / 8);\n  }\n  _int_format(bytelength) {\n    return [\"<B\", \"<H\", \"<I\", \"<Q\"][bytelength - 1];\n  }\n  async _read_node(address, node_level) {\n    let [offset, nrecords, ntotalrecords] = address;\n    let node = this._read_node_header(offset, node_level);\n    offset += _structure_size(this.B_LINK_NODE);\n    let record_size = this.header.get(\"record_size\");\n    let keys = [];\n    for (let i = 0; i < nrecords; i++) {\n      let record = await this._parse_record(this.fh, offset, record_size);\n      offset += record_size;\n      keys.push(record);\n    }\n    let addresses = [];\n    let fmts = this.address_formats.get(node_level);\n    if (node_level != 0) {\n      let [offset_size, num1_size, num2_size, offset_fmt, num1_fmt, num2_fmt] = fmts;\n      for (let j = 0; j <= nrecords; j++) {\n        let address_offset = (await struct.unpack_from_async(offset_fmt, this.fh, offset))[0];\n        offset += offset_size;\n        let num1 = (await struct.unpack_from_async(num1_fmt, this.fh, offset))[0];\n        offset += num1_size;\n        let num2 = num1;\n        if (num2_size > 0) {\n          num2 = (await struct.unpack_from_async(num2_fmt, this.fh, offset))[0];\n          offset += num2_size;\n        }\n        addresses.push([address_offset, num1, num2]);\n      }\n    }\n    node.set(\"keys\", keys);\n    node.set(\"addresses\", addresses);\n    return node;\n  }\n  async _read_node_header(offset, node_level) {\n    let node = await _unpack_struct_from_async(this.B_LINK_NODE, this.fh, offset);\n    node.set(\"node_level\", node_level);\n    return node;\n  }\n  *iter_records() {\n    for (let nodelist of this.all_nodes.values()) {\n      for (let node of nodelist) {\n        for (let key of node.get(\"keys\")) {\n          yield key;\n        }\n      }\n    }\n  }\n  _parse_record(record) {\n    throw \"NotImplementedError\";\n  }\n};\nvar BTreeV2GroupNames = class extends BTreeV2 {\n  NODE_TYPE = 5;\n  async _parse_record(buf, offset, size) {\n    let namehash = (await struct.unpack_from_async(\"<I\", buf, offset))[0];\n    offset += 4;\n    const heapid = await buf.slice(offset, offset + 7);\n    return /* @__PURE__ */ new Map([[\"namehash\", namehash], [\"heapid\", heapid]]);\n  }\n};\nvar BTreeV2GroupOrders = class extends BTreeV2 {\n  NODE_TYPE = 6;\n  async _parse_record(buf, offset, size) {\n    let creationorder = (await struct.unpack_from_async(\"<Q\", buf, offset))[0];\n    offset += 8;\n    const heapid = await buf.slice(offset, offset + 7);\n    return /* @__PURE__ */ new Map([[\"creationorder\", creationorder], [\"heapid\", heapid]]);\n  }\n};\n\n// esm/misc-low-level.js\nvar SuperBlock = class {\n  constructor(fh, offset) {\n    this.ready = this.init(fh, offset);\n  }\n  async init(fh, offset) {\n    let version_hint = await struct.unpack_from_async(\"<B\", fh, offset + 8);\n    var contents;\n    if (version_hint == 0) {\n      contents = await _unpack_struct_from_async(SUPERBLOCK_V0, fh, offset);\n      this._end_of_sblock = offset + SUPERBLOCK_V0_SIZE;\n    } else if (version_hint == 2 || version_hint == 3) {\n      contents = await _unpack_struct_from_async(SUPERBLOCK_V2_V3, fh, offset);\n      this._end_of_sblock = offset + SUPERBLOCK_V2_V3_SIZE;\n    } else {\n      throw \"unsupported superblock version: \" + version_hint.toFixed();\n    }\n    if (contents.get(\"format_signature\") != FORMAT_SIGNATURE) {\n      throw \"Incorrect file signature: \" + contents.get(\"format_signature\");\n    }\n    if (contents.get(\"offset_size\") != 8 || contents.get(\"length_size\") != 8) {\n      throw \"File uses non-64-bit addressing\";\n    }\n    this.version = contents.get(\"superblock_version\");\n    this._contents = contents;\n    this._root_symbol_table = null;\n    this._fh = fh;\n  }\n  async get_offset_to_dataobjects() {\n    if (this.version == 0) {\n      var sym_table = new SymbolTable(this._fh, this._end_of_sblock, true);\n      await sym_table.ready;\n      this._root_symbol_table = sym_table;\n      return sym_table.group_offset;\n    } else if (this.version == 2 || this.version == 3) {\n      return this._contents.get(\"root_group_address\");\n    } else {\n      throw \"Not implemented version = \" + this.version.toFixed();\n    }\n  }\n};\nvar Heap = class {\n  constructor(fh, offset) {\n    this.ready = this.init(fh, offset);\n  }\n  async init(fh, offset) {\n    let local_heap = await _unpack_struct_from_async(LOCAL_HEAP, fh, offset);\n    assert(local_heap.get(\"signature\") == \"HEAP\");\n    assert(local_heap.get(\"version\") == 0);\n    let data_offset = local_heap.get(\"address_of_data_segment\");\n    let heap_data = await fh.slice(data_offset, data_offset + local_heap.get(\"data_segment_size\"));\n    local_heap.set(\"heap_data\", heap_data);\n    this._contents = local_heap;\n    this.data = heap_data;\n  }\n  get_object_name(offset) {\n    let end = new Uint8Array(this.data).indexOf(0, offset);\n    let name_size = end - offset;\n    let name = struct.unpack_from(\"<\" + name_size.toFixed() + \"s\", this.data, offset)[0];\n    return name;\n  }\n};\nvar SymbolTable = class {\n  constructor(fh, offset, root = false) {\n    this.ready = this.init(fh, offset, root);\n  }\n  async init(fh, offset, root) {\n    var node;\n    if (root) {\n      node = /* @__PURE__ */ new Map([[\"symbols\", 1]]);\n    } else {\n      node = await _unpack_struct_from_async(SYMBOL_TABLE_NODE, fh, offset);\n      if (node.get(\"signature\") != \"SNOD\") {\n        throw \"incorrect node type\";\n      }\n      offset += SYMBOL_TABLE_NODE_SIZE;\n    }\n    var entries = [];\n    var n_symbols = node.get(\"symbols\");\n    for (var i = 0; i < n_symbols; i++) {\n      entries.push(await _unpack_struct_from_async(SYMBOL_TABLE_ENTRY, fh, offset));\n      offset += SYMBOL_TABLE_ENTRY_SIZE;\n    }\n    if (root) {\n      this.group_offset = entries[0].get(\"object_header_address\");\n    }\n    this.entries = entries;\n    this._contents = node;\n    return this;\n  }\n  assign_name(heap) {\n    this.entries.forEach(function(entry) {\n      let offset = entry.get(\"link_name_offset\");\n      let link_name = heap.get_object_name(offset);\n      entry.set(\"link_name\", link_name);\n    });\n  }\n  get_links(heap) {\n    var links = {};\n    this.entries.forEach(function(e) {\n      let cache_type = e.get(\"cache_type\");\n      let link_name = e.get(\"link_name\");\n      if (cache_type == 0 || cache_type == 1) {\n        links[link_name] = e.get(\"object_header_address\");\n      } else if (cache_type == 2) {\n        let scratch = e.get(\"scratch\");\n        let buf = new ArrayBuffer(4);\n        let bufView = new Uint8Array(buf);\n        for (var i = 0; i < 4; i++) {\n          bufView[i] = scratch.charCodeAt(i);\n        }\n        let offset = struct.unpack_from(\"<I\", buf, 0)[0];\n        links[link_name] = heap.get_object_name(offset);\n      }\n    });\n    return links;\n  }\n};\nvar GlobalHeap = class {\n  constructor(fh, offset) {\n    this.ready = this.init(fh, offset);\n  }\n  async init(fh, offset) {\n    let header = await _unpack_struct_from_async(GLOBAL_HEAP_HEADER, fh, offset);\n    offset += GLOBAL_HEAP_HEADER_SIZE;\n    let heap_data_size = header.get(\"collection_size\") - GLOBAL_HEAP_HEADER_SIZE;\n    let heap_data = await fh.slice(offset, offset + heap_data_size);\n    this.heap_data = heap_data;\n    this._header = header;\n    this._objects = null;\n  }\n  get objects() {\n    if (this._objects == null) {\n      this._objects = /* @__PURE__ */ new Map();\n      var offset = 0;\n      while (offset <= this.heap_data.byteLength - GLOBAL_HEAP_OBJECT_SIZE) {\n        let info = _unpack_struct_from(GLOBAL_HEAP_OBJECT, this.heap_data, offset);\n        if (info.get(\"object_index\") == 0) {\n          break;\n        }\n        offset += GLOBAL_HEAP_OBJECT_SIZE;\n        let obj_data = this.heap_data.slice(offset, offset + info.get(\"object_size\"));\n        this._objects.set(info.get(\"object_index\"), obj_data);\n        offset += _padded_size(info.get(\"object_size\"));\n      }\n    }\n    return this._objects;\n  }\n};\nvar FractalHeap = class {\n  constructor(fh, offset) {\n    this.fh = fh;\n    this.ready = this.init(offset);\n  }\n  async init(offset) {\n    let header = await _unpack_struct_from_async(FRACTAL_HEAP_HEADER, this.fh, offset);\n    offset += _structure_size(FRACTAL_HEAP_HEADER);\n    assert(header.get(\"signature\") == \"FRHP\");\n    assert(header.get(\"version\") == 0);\n    if (header.get(\"filter_info_size\") > 0) {\n      throw \"Filter info size not supported on FractalHeap\";\n    }\n    if (header.get(\"btree_address_huge_objects\") == UNDEFINED_ADDRESS) {\n      header.set(\"btree_address_huge_objects\", null);\n    } else {\n      throw \"Huge objects not implemented in FractalHeap\";\n    }\n    if (header.get(\"root_block_address\") == UNDEFINED_ADDRESS) {\n      header.set(\"root_block_address\", null);\n    }\n    let nbits = header.get(\"log2_maximum_heap_size\");\n    let block_offset_size = this._min_size_nbits(nbits);\n    let h = /* @__PURE__ */ new Map([\n      [\"signature\", \"4s\"],\n      [\"version\", \"B\"],\n      [\"heap_header_adddress\", \"Q\"],\n      [\"block_offset\", `${block_offset_size}B`]\n    ]);\n    this.indirect_block_header = new Map(h);\n    this.indirect_block_header_size = _structure_size(h);\n    if ((header.get(\"flags\") & 2) == 2) {\n      h.set(\"checksum\", \"I\");\n    }\n    this.direct_block_header = h;\n    this.direct_block_header_size = _structure_size(h);\n    let maximum_dblock_size = header.get(\"maximum_direct_block_size\");\n    this._managed_object_offset_size = this._min_size_nbits(nbits);\n    let value = Math.min(maximum_dblock_size, header.get(\"max_managed_object_size\"));\n    this._managed_object_length_size = this._min_size_integer(value);\n    let start_block_size = header.get(\"starting_block_size\");\n    let table_width = header.get(\"table_width\");\n    if (!(start_block_size > 0)) {\n      throw \"Starting block size == 0 not implemented\";\n    }\n    let log2_maximum_dblock_size = Number(Math.floor(Math.log2(maximum_dblock_size)));\n    assert(1n << BigInt(log2_maximum_dblock_size) == maximum_dblock_size);\n    let log2_start_block_size = Number(Math.floor(Math.log2(start_block_size)));\n    assert(1n << BigInt(log2_start_block_size) == start_block_size);\n    this._max_direct_nrows = log2_maximum_dblock_size - log2_start_block_size + 2;\n    let log2_table_width = Math.floor(Math.log2(table_width));\n    assert(1 << log2_table_width == table_width);\n    this._indirect_nrows_sub = log2_table_width + log2_start_block_size - 1;\n    this.header = header;\n    this.nobjects = header.get(\"managed_object_count\") + header.get(\"huge_object_count\") + header.get(\"tiny_object_count\");\n    let managed = [];\n    let root_address = header.get(\"root_block_address\");\n    let nrows = 0;\n    if (root_address != null) {\n      nrows = header.get(\"indirect_current_rows_count\");\n    }\n    if (nrows > 0) {\n      for await (let data of this._iter_indirect_block(this.fh, root_address, nrows)) {\n        managed.push(data);\n      }\n    } else {\n      let data = await this._read_direct_block(this.fh, root_address, start_block_size);\n      managed.push(data);\n    }\n    let data_size = managed.reduce((p, c) => p + c.byteLength, 0);\n    let combined = new Uint8Array(data_size);\n    let moffset = 0;\n    managed.forEach((m) => {\n      combined.set(new Uint8Array(m), moffset);\n      moffset += m.byteLength;\n    });\n    this.managed = combined.buffer;\n  }\n  async _read_direct_block(fh, offset, block_size) {\n    let data = await fh.slice(offset, offset + block_size);\n    let header = _unpack_struct_from(this.direct_block_header, data);\n    assert(header.get(\"signature\") == \"FHDB\");\n    return data;\n  }\n  get_data(heapid) {\n    let firstbyte = struct.unpack_from(\"<B\", heapid, 0)[0];\n    let idtype = firstbyte >> 4 & 3;\n    let version = firstbyte >> 6;\n    let data_offset = 1;\n    if (idtype == 0) {\n      assert(version == 0);\n      let nbytes = this._managed_object_offset_size;\n      let offset = _unpack_integer(nbytes, heapid, data_offset);\n      data_offset += nbytes;\n      nbytes = this._managed_object_length_size;\n      let size = _unpack_integer(nbytes, heapid, data_offset);\n      return this.managed.slice(offset, offset + size);\n    } else if (idtype == 1) {\n      throw \"tiny objectID not supported in FractalHeap\";\n    } else if (idtype == 2) {\n      throw \"huge objectID not supported in FractalHeap\";\n    } else {\n      throw \"unknown objectID type in FractalHeap\";\n    }\n  }\n  _min_size_integer(integer) {\n    return this._min_size_nbits(bitSize(integer));\n  }\n  _min_size_nbits(nbits) {\n    return Math.ceil(nbits / 8);\n  }\n  async *_iter_indirect_block(fh, offset, nrows) {\n    let header = await _unpack_struct_from_async(this.indirect_block_header, fh, offset);\n    offset += this.indirect_block_header_size;\n    assert(header.get(\"signature\") == \"FHIB\");\n    let block_offset_bytes = header.get(\"block_offset\");\n    let block_offset = block_offset_bytes.reduce((p, c, i) => p + (c << i * 8), 0);\n    header.set(\"block_offset\", block_offset);\n    let [ndirect, nindirect] = this._indirect_info(nrows);\n    let direct_blocks = [];\n    for (let i = 0; i < ndirect; i++) {\n      let address = (await struct.unpack_from_async(\"<Q\", fh, offset))[0];\n      offset += 8;\n      if (address == UNDEFINED_ADDRESS) {\n        break;\n      }\n      let block_size = this._calc_block_size(i);\n      direct_blocks.push([address, block_size]);\n    }\n    let indirect_blocks = [];\n    for (let i = ndirect; i < ndirect + nindirect; i++) {\n      let address = (await struct.unpack_from_async(\"<Q\", fh, offset))[0];\n      offset += 8;\n      if (address == UNDEFINED_ADDRESS) {\n        break;\n      }\n      let block_size = this._calc_block_size(i);\n      let nrows2 = this._iblock_nrows_from_block_size(block_size);\n      indirect_blocks.push([address, nrows2]);\n    }\n    for (let [address, block_size] of direct_blocks) {\n      let obj = await this._read_direct_block(fh, address, block_size);\n      yield obj;\n    }\n    for (let [address, nrows2] of indirect_blocks) {\n      for await (let obj of this._iter_indirect_block(fh, address, nrows2)) {\n        yield obj;\n      }\n    }\n  }\n  _calc_block_size(iblock) {\n    let row = Math.floor(iblock / this.header.get(\"table_width\"));\n    return 2 ** Math.max(row - 1, 0) * this.header.get(\"starting_block_size\");\n  }\n  _iblock_nrows_from_block_size(block_size) {\n    let log2_block_size = Math.floor(Math.log2(block_size));\n    assert(2 ** log2_block_size == block_size);\n    return log2_block_size - this._indirect_nrows_sub;\n  }\n  _indirect_info(nrows) {\n    let table_width = this.header.get(\"table_width\");\n    let nobjects = nrows * table_width;\n    let ndirect_max = this._max_direct_nrows * table_width;\n    let ndirect, nindirect;\n    if (nrows <= ndirect_max) {\n      ndirect = nobjects;\n      nindirect = 0;\n    } else {\n      ndirect = ndirect_max;\n      nindirect = nobjects - ndirect_max;\n    }\n    return [ndirect, nindirect];\n  }\n  _int_format(bytelength) {\n    return [\"B\", \"H\", \"I\", \"Q\"][bytelength - 1];\n  }\n};\nvar FORMAT_SIGNATURE = struct.unpack_from(\"8s\", new Uint8Array([137, 72, 68, 70, 13, 10, 26, 10]).buffer)[0];\nvar UNDEFINED_ADDRESS = struct.unpack_from(\"<Q\", new Uint8Array([255, 255, 255, 255, 255, 255, 255, 255]).buffer)[0];\nvar SUPERBLOCK_V0 = /* @__PURE__ */ new Map([\n  [\"format_signature\", \"8s\"],\n  [\"superblock_version\", \"B\"],\n  [\"free_storage_version\", \"B\"],\n  [\"root_group_version\", \"B\"],\n  [\"reserved_0\", \"B\"],\n  [\"shared_header_version\", \"B\"],\n  [\"offset_size\", \"B\"],\n  [\"length_size\", \"B\"],\n  [\"reserved_1\", \"B\"],\n  [\"group_leaf_node_k\", \"H\"],\n  [\"group_internal_node_k\", \"H\"],\n  [\"file_consistency_flags\", \"L\"],\n  [\"base_address_lower\", \"Q\"],\n  [\"free_space_address\", \"Q\"],\n  [\"end_of_file_address\", \"Q\"],\n  [\"driver_information_address\", \"Q\"]\n]);\nvar SUPERBLOCK_V0_SIZE = _structure_size(SUPERBLOCK_V0);\nvar SUPERBLOCK_V2_V3 = /* @__PURE__ */ new Map([\n  [\"format_signature\", \"8s\"],\n  [\"superblock_version\", \"B\"],\n  [\"offset_size\", \"B\"],\n  [\"length_size\", \"B\"],\n  [\"file_consistency_flags\", \"B\"],\n  [\"base_address\", \"Q\"],\n  [\"superblock_extension_address\", \"Q\"],\n  [\"end_of_file_address\", \"Q\"],\n  [\"root_group_address\", \"Q\"],\n  [\"superblock_checksum\", \"I\"]\n]);\nvar SUPERBLOCK_V2_V3_SIZE = _structure_size(SUPERBLOCK_V2_V3);\nvar SYMBOL_TABLE_ENTRY = /* @__PURE__ */ new Map([\n  [\"link_name_offset\", \"Q\"],\n  [\"object_header_address\", \"Q\"],\n  [\"cache_type\", \"I\"],\n  [\"reserved\", \"I\"],\n  [\"scratch\", \"16s\"]\n]);\nvar SYMBOL_TABLE_ENTRY_SIZE = _structure_size(SYMBOL_TABLE_ENTRY);\nvar SYMBOL_TABLE_NODE = /* @__PURE__ */ new Map([\n  [\"signature\", \"4s\"],\n  [\"version\", \"B\"],\n  [\"reserved_0\", \"B\"],\n  [\"symbols\", \"H\"]\n]);\nvar SYMBOL_TABLE_NODE_SIZE = _structure_size(SYMBOL_TABLE_NODE);\nvar LOCAL_HEAP = /* @__PURE__ */ new Map([\n  [\"signature\", \"4s\"],\n  [\"version\", \"B\"],\n  [\"reserved\", \"3s\"],\n  [\"data_segment_size\", \"Q\"],\n  [\"offset_to_free_list\", \"Q\"],\n  [\"address_of_data_segment\", \"Q\"]\n]);\nvar GLOBAL_HEAP_HEADER = /* @__PURE__ */ new Map([\n  [\"signature\", \"4s\"],\n  [\"version\", \"B\"],\n  [\"reserved\", \"3s\"],\n  [\"collection_size\", \"Q\"]\n]);\nvar GLOBAL_HEAP_HEADER_SIZE = _structure_size(GLOBAL_HEAP_HEADER);\nvar GLOBAL_HEAP_OBJECT = /* @__PURE__ */ new Map([\n  [\"object_index\", \"H\"],\n  [\"reference_count\", \"H\"],\n  [\"reserved\", \"I\"],\n  [\"object_size\", \"Q\"]\n]);\nvar GLOBAL_HEAP_OBJECT_SIZE = _structure_size(GLOBAL_HEAP_OBJECT);\nvar FRACTAL_HEAP_HEADER = /* @__PURE__ */ new Map([\n  [\"signature\", \"4s\"],\n  [\"version\", \"B\"],\n  [\"object_index_size\", \"H\"],\n  [\"filter_info_size\", \"H\"],\n  [\"flags\", \"B\"],\n  [\"max_managed_object_size\", \"I\"],\n  [\"next_huge_object_index\", \"Q\"],\n  [\"btree_address_huge_objects\", \"Q\"],\n  [\"managed_freespace_size\", \"Q\"],\n  [\"freespace_manager_address\", \"Q\"],\n  [\"managed_space_size\", \"Q\"],\n  [\"managed_alloc_size\", \"Q\"],\n  [\"next_directblock_iterator_address\", \"Q\"],\n  [\"managed_object_count\", \"Q\"],\n  [\"huge_objects_total_size\", \"Q\"],\n  [\"huge_object_count\", \"Q\"],\n  [\"tiny_objects_total_size\", \"Q\"],\n  [\"tiny_object_count\", \"Q\"],\n  [\"table_width\", \"H\"],\n  [\"starting_block_size\", \"Q\"],\n  [\"maximum_direct_block_size\", \"Q\"],\n  [\"log2_maximum_heap_size\", \"H\"],\n  [\"indirect_starting_rows_count\", \"H\"],\n  [\"root_block_address\", \"Q\"],\n  [\"indirect_current_rows_count\", \"H\"]\n]);\n\n// esm/dataobjects.js\nvar DataObjects = class {\n  constructor(fh, offset) {\n    this.ready = this.init(fh, offset);\n  }\n  async init(fh, offset) {\n    let version_hint = (await struct.unpack_from_async(\"<B\", fh, offset))[0];\n    if (version_hint == 1) {\n      var [msgs, msg_data, header] = await this._parse_v1_objects(fh, offset);\n    } else if (version_hint == \"O\".charCodeAt(0)) {\n      var [msgs, msg_data, header] = await this._parse_v2_objects(fh, offset);\n    } else {\n      throw \"InvalidHDF5File('unknown Data Object Header')\";\n    }\n    this.fh = fh;\n    this.msgs = msgs;\n    this.msg_data = msg_data;\n    this.offset = offset;\n    this._global_heaps = {};\n    this._header = header;\n    this._filter_pipeline = null;\n    this._chunk_params_set = false;\n    this._chunks = null;\n    this._chunk_dims = null;\n    this._chunk_address = null;\n  }\n  get dtype() {\n    let msg = this.find_msg_type(DATATYPE_MSG_TYPE)[0];\n    let msg_offset = msg.get(\"offset_to_message\");\n    return new DatatypeMessage(this.fh, msg_offset).dtype;\n  }\n  get chunks() {\n    return this._get_chunk_params().then(() => {\n      return this._chunks;\n    });\n  }\n  get shape() {\n    let msg = this.find_msg_type(DATASPACE_MSG_TYPE)[0];\n    let msg_offset = msg.get(\"offset_to_message\");\n    return determine_data_shape(this.fh, msg_offset);\n  }\n  async get_filter_pipeline() {\n    if (this._filter_pipeline != null) {\n      return this._filter_pipeline;\n    }\n    let filter_msgs = this.find_msg_type(DATA_STORAGE_FILTER_PIPELINE_MSG_TYPE);\n    if (!filter_msgs.length) {\n      this._filter_pipeline = null;\n      return this._filter_pipeline;\n    }\n    var offset = filter_msgs[0].get(\"offset_to_message\");\n    let [version, nfilters] = await struct.unpack_from_async(\"<BB\", this.fh, offset);\n    offset += struct.calcsize(\"<BB\");\n    var filters = [];\n    if (version == 1) {\n      await struct.unpack_from_async(\"<HI\", this.fh, offset);\n      offset += struct.calcsize(\"<HI\");\n      for (var _ = 0; _ < nfilters; _++) {\n        let filter_info = await _unpack_struct_from_async(FILTER_PIPELINE_DESCR_V1, this.fh, offset);\n        offset += FILTER_PIPELINE_DESCR_V1_SIZE;\n        let padded_name_length = _padded_size(filter_info.get(\"name_length\"), 8);\n        let fmt = \"<\" + padded_name_length.toFixed() + \"s\";\n        let filter_name = (await struct.unpack_from_async(fmt, this.fh, offset))[0];\n        filter_info.set(\"filter_name\", filter_name);\n        offset += padded_name_length;\n        fmt = \"<\" + filter_info.get(\"client_data_values\").toFixed() + \"I\";\n        let client_data = await struct.unpack_from_async(fmt, this.fh, offset);\n        filter_info.set(\"client_data\", client_data);\n        offset += 4 * filter_info.get(\"client_data_values\");\n        if (filter_info.get(\"client_data_values\") % 2) {\n          offset += 4;\n        }\n        filters.push(filter_info);\n      }\n    } else if (version == 2) {\n      for (let nf = 0; nf < nfilters; nf++) {\n        let filter_info = /* @__PURE__ */ new Map();\n        let buf = this.fh;\n        let filter_id = (await struct.unpack_from_async(\"<H\", buf, offset))[0];\n        offset += 2;\n        filter_info.set(\"filter_id\", filter_id);\n        let name_length = 0;\n        if (filter_id > 255) {\n          name_length = (await struct.unpack_from_async(\"<H\", buf, offset))[0];\n          offset += 2;\n        }\n        let flags = (await struct.unpack_from_async(\"<H\", buf, offset))[0];\n        offset += 2;\n        let optional = (flags & 1) > 0;\n        filter_info.set(\"optional\", optional);\n        let num_client_values = (await struct.unpack_from_async(\"<H\", buf, offset))[0];\n        offset += 2;\n        let name;\n        if (name_length > 0) {\n          name = (await struct.unpack_from_async(`${name_length}s`, buf, offset))[0];\n          offset += name_length;\n        }\n        filter_info.set(\"name\", name);\n        let client_values = await struct.unpack_from_async(`<${num_client_values}i`, buf, offset);\n        offset += 4 * num_client_values;\n        filter_info.set(\"client_data_values\", client_values);\n        filters.push(filter_info);\n      }\n    } else {\n      throw `version ${version} is not supported`;\n    }\n    this._filter_pipeline = filters;\n    return this._filter_pipeline;\n  }\n  find_msg_type(msg_type) {\n    return this.msgs.filter(function(m) {\n      return m.get(\"type\") == msg_type;\n    });\n  }\n  async get_attributes() {\n    let attrs = {};\n    let attr_msgs = this.find_msg_type(ATTRIBUTE_MSG_TYPE);\n    for (let msg of attr_msgs) {\n      let offset = msg.get(\"offset_to_message\");\n      let [name, value] = await this.unpack_attribute(offset);\n      attrs[name] = value;\n    }\n    return attrs;\n  }\n  async get_fillvalue() {\n    let msg = this.find_msg_type(FILLVALUE_MSG_TYPE)[0];\n    var offset = msg.get(\"offset_to_message\");\n    var is_defined;\n    let version = (await struct.unpack_from_async(\"<B\", this.fh, offset))[0];\n    var info, size, fillvalue;\n    if (version == 1 || version == 2) {\n      info = await _unpack_struct_from_async(FILLVAL_MSG_V1V2, this.fh, offset);\n      offset += FILLVAL_MSG_V1V2_SIZE;\n      is_defined = info.get(\"fillvalue_defined\");\n    } else if (version == 3) {\n      info = await _unpack_struct_from_async(FILLVAL_MSG_V3, this.fh, offset);\n      offset += FILLVAL_MSG_V3_SIZE;\n      is_defined = info.get(\"flags\") & 32;\n    } else {\n      throw 'InvalidHDF5File(\"Unknown fillvalue msg version: \"' + String(version);\n    }\n    if (is_defined) {\n      size = (await struct.unpack_from_async(\"<I\", this.fh, offset))[0];\n      offset += 4;\n    } else {\n      size = 0;\n    }\n    if (size) {\n      let [getter, big_endian, size2] = dtype_getter(await this.dtype);\n      let payload_view = new DataView64(await this.fh.slice(offset, offset + size2));\n      fillvalue = payload_view[getter](offset, !big_endian, size2);\n    } else {\n      fillvalue = 0;\n    }\n    return fillvalue;\n  }\n  async unpack_attribute(offset) {\n    let version = (await struct.unpack_from_async(\"<B\", this.fh, offset))[0];\n    var attr_map, padding_multiple;\n    if (version == 1) {\n      attr_map = await _unpack_struct_from_async(ATTR_MSG_HEADER_V1, this.fh, offset);\n      assert(attr_map.get(\"version\") == 1);\n      offset += ATTR_MSG_HEADER_V1_SIZE;\n      padding_multiple = 8;\n    } else if (version == 3) {\n      attr_map = await _unpack_struct_from_async(ATTR_MSG_HEADER_V3, this.fh, offset);\n      assert(attr_map.get(\"version\") == 3);\n      offset += ATTR_MSG_HEADER_V3_SIZE;\n      padding_multiple = 1;\n    } else {\n      throw \"unsupported attribute message version: \" + version;\n    }\n    let name_size = attr_map.get(\"name_size\");\n    let name = (await struct.unpack_from_async(\"<\" + name_size.toFixed() + \"s\", this.fh, offset))[0];\n    name = name.replace(/\\x00$/, \"\");\n    offset += _padded_size(name_size, padding_multiple);\n    var dtype;\n    try {\n      dtype = await new DatatypeMessage(this.fh, offset).dtype;\n    } catch (e) {\n      console.warn(\"Attribute \" + name + \" type not implemented, set to null.\");\n      return [name, null];\n    }\n    offset += _padded_size(attr_map.get(\"datatype_size\"), padding_multiple);\n    let shape = await this.determine_data_shape(this.fh, offset);\n    let items = shape.reduce(function(a, b) {\n      return a * b;\n    }, 1);\n    offset += _padded_size(attr_map.get(\"dataspace_size\"), padding_multiple);\n    if (dtype.datatype_class === 5) {\n      value = await this.fh.slice(offset, offset + dtype.size);\n    } else {\n      var value = await this._attr_value(dtype, this.fh, items, offset);\n      if (shape.length == 0) {\n        value = value[0];\n      }\n    }\n    return [name, value];\n  }\n  async determine_data_shape(buf, offset) {\n    let version = (await struct.unpack_from_async(\"<B\", buf, offset))[0];\n    var header;\n    if (version == 1) {\n      header = await _unpack_struct_from_async(DATASPACE_MSG_HEADER_V1, buf, offset);\n      assert(header.get(\"version\") == 1);\n      offset += DATASPACE_MSG_HEADER_V1_SIZE;\n    } else if (version == 2) {\n      header = await _unpack_struct_from_async(DATASPACE_MSG_HEADER_V2, buf, offset);\n      assert(header.get(\"version\") == 2);\n      offset += DATASPACE_MSG_HEADER_V2_SIZE;\n    } else {\n      throw \"unknown dataspace message version\";\n    }\n    let ndims = header.get(\"dimensionality\");\n    let dim_sizes = await struct.unpack_from_async(\"<\" + ndims.toFixed() + \"Q\", buf, offset);\n    return dim_sizes;\n  }\n  async _attr_value(dtype, buf, count, offset) {\n    var value = new Array(count);\n    if (dtype instanceof Array) {\n      let dtype_class = dtype[0];\n      for (var i = 0; i < count; i++) {\n        if (dtype_class == \"VLEN_STRING\") {\n          let character_set = dtype[2];\n          var [vlen, vlen_data] = await this._vlen_size_and_data(buf, offset);\n          const encoding = character_set == 0 ? \"ascii\" : \"utf-8\";\n          const decoder = new TextDecoder(encoding);\n          value[i] = decoder.decode(vlen_data);\n          offset += 16;\n        } else if (dtype_class == \"REFERENCE\") {\n          var address = await struct.unpack_from_async(\"<Q\", buf, offset);\n          value[i] = address;\n          offset += 8;\n        } else if (dtype_class == \"VLEN_SEQUENCE\") {\n          let base_dtype = dtype[1];\n          var [vlen, vlen_data] = this._vlen_size_and_data(buf, offset);\n          value[i] = this._attr_value(base_dtype, vlen_data, vlen, 0);\n          offset += 16;\n        } else {\n          throw \"NotImplementedError\";\n        }\n      }\n    } else {\n      let [getter, big_endian, size] = dtype_getter(dtype);\n      const arrayBuffer = await buf.slice(offset, offset + count * size);\n      let view = new DataView64(arrayBuffer, 0);\n      let bufferOffset = 0;\n      for (var i = 0; i < count; i++) {\n        value[i] = view[getter](bufferOffset, !big_endian, size);\n        bufferOffset += size;\n      }\n    }\n    return value;\n  }\n  async _vlen_size_and_data(buf, offset) {\n    let vlen_size = (await struct.unpack_from_async(\"<I\", buf, offset))[0];\n    let gheap_id = await _unpack_struct_from_async(GLOBAL_HEAP_ID, buf, offset + 4);\n    let gheap_address = gheap_id.get(\"collection_address\");\n    assert(gheap_id.get(\"collection_address\") < Number.MAX_SAFE_INTEGER);\n    var gheap;\n    if (!(gheap_address in this._global_heaps)) {\n      gheap = new GlobalHeap(this.fh, gheap_address);\n      await gheap.ready;\n      this._global_heaps[gheap_address] = gheap;\n    }\n    gheap = this._global_heaps[gheap_address];\n    let vlen_data = gheap.objects.get(gheap_id.get(\"object_index\"));\n    return [vlen_size, vlen_data];\n  }\n  async _parse_v1_objects(fh, offset) {\n    let header = await _unpack_struct_from_async(OBJECT_HEADER_V1, fh, offset);\n    assert(header.get(\"version\") == 1);\n    let total_header_messages = header.get(\"total_header_messages\");\n    var block_size = header.get(\"object_header_size\");\n    var block_offset = offset + _structure_size(OBJECT_HEADER_V1);\n    var msg_data = await fh.slice(block_offset, block_offset + block_size);\n    var object_header_blocks = [[block_offset, block_size]];\n    var current_block = 0;\n    var local_offset = 0;\n    var msgs = new Array(total_header_messages);\n    for (var i = 0; i < total_header_messages; i++) {\n      if (local_offset >= block_size) {\n        [block_offset, block_size] = object_header_blocks[++current_block];\n        local_offset = 0;\n      }\n      let msg = await _unpack_struct_from_async(HEADER_MSG_INFO_V1, fh, block_offset + local_offset);\n      let offset_to_message = block_offset + local_offset + HEADER_MSG_INFO_V1_SIZE;\n      msg.set(\"offset_to_message\", offset_to_message);\n      if (msg.get(\"type\") == OBJECT_CONTINUATION_MSG_TYPE) {\n        var [fh_off, size] = await struct.unpack_from_async(\"<QQ\", fh, offset_to_message);\n        object_header_blocks.push([fh_off, size]);\n      }\n      local_offset += HEADER_MSG_INFO_V1_SIZE + msg.get(\"size\");\n      msgs[i] = msg;\n    }\n    return [msgs, msg_data, header];\n  }\n  async _parse_v2_objects(buf, offset) {\n    var [header, creation_order_size, block_offset] = await this._parse_v2_header(buf, offset);\n    offset = block_offset;\n    var msgs = [];\n    var block_size = header.get(\"size_of_chunk_0\");\n    var msg_data = buf.slice(offset, offset += block_size);\n    var object_header_blocks = [[block_offset, block_size]];\n    var current_block = 0;\n    var local_offset = 0;\n    while (true) {\n      if (local_offset >= block_size - HEADER_MSG_INFO_V2_SIZE) {\n        let next_block = object_header_blocks[++current_block];\n        if (next_block == null) {\n          break;\n        }\n        [block_offset, block_size] = next_block;\n        local_offset = 0;\n      }\n      let msg = await _unpack_struct_from_async(HEADER_MSG_INFO_V2, buf, block_offset + local_offset);\n      let offset_to_message = block_offset + local_offset + HEADER_MSG_INFO_V2_SIZE + creation_order_size;\n      msg.set(\"offset_to_message\", offset_to_message);\n      if (msg.get(\"type\") == OBJECT_CONTINUATION_MSG_TYPE) {\n        var [fh_off, size] = await struct.unpack_from_async(\"<QQ\", buf, offset_to_message);\n        object_header_blocks.push([fh_off + 4, size - 4]);\n      }\n      local_offset += HEADER_MSG_INFO_V2_SIZE + msg.get(\"size\") + creation_order_size;\n      msgs.push(msg);\n    }\n    return [msgs, msg_data, header];\n  }\n  async _parse_v2_header(buf, offset) {\n    let header = await _unpack_struct_from_async(OBJECT_HEADER_V2, buf, offset);\n    var creation_order_size;\n    offset += _structure_size(OBJECT_HEADER_V2);\n    assert(header.get(\"version\") == 2);\n    if (header.get(\"flags\") & 4) {\n      creation_order_size = 2;\n    } else {\n      creation_order_size = 0;\n    }\n    assert((header.get(\"flags\") & 16) == 0);\n    if (header.get(\"flags\") & 32) {\n      let times = await struct.unpack_from_async(\"<4I\", buf, offset);\n      offset += 16;\n      header.set(\"access_time\", times[0]);\n      header.set(\"modification_time\", times[1]);\n      header.set(\"change_time\", times[2]);\n      header.set(\"birth_time\", times[3]);\n    }\n    let chunk_fmt = [\"<B\", \"<H\", \"<I\", \"<Q\"][header.get(\"flags\") & 3];\n    header.set(\"size_of_chunk_0\", (await struct.unpack_from_async(chunk_fmt, buf, offset))[0]);\n    offset += struct.calcsize(chunk_fmt);\n    return [header, creation_order_size, offset];\n  }\n  async find_link(name) {\n    if (this._links) {\n      for (link of this._links) {\n        if (name === link[0]) {\n          return link;\n        }\n      }\n    } else {\n      const links = [];\n      for await (const link2 of this.iter_links()) {\n        if (name === link2[0]) {\n          return link2;\n        }\n        links.push(link2);\n      }\n      this._links = links;\n    }\n    return void 0;\n  }\n  async get_links() {\n    const links = [];\n    for await (const link2 of this.iter_links()) {\n      links.push(link2);\n    }\n    return Object.fromEntries(links);\n  }\n  async *iter_links() {\n    for (let msg of this.msgs) {\n      if (msg.get(\"type\") == SYMBOL_TABLE_MSG_TYPE) {\n        yield* this._iter_links_from_symbol_tables(msg);\n      } else if (msg.get(\"type\") == LINK_MSG_TYPE) {\n        yield this._get_link_from_link_msg(msg);\n      } else if (msg.get(\"type\") == LINK_INFO_MSG_TYPE) {\n        yield* this._iter_link_from_link_info_msg(msg);\n      }\n    }\n  }\n  async *_iter_links_from_symbol_tables(sym_tbl_msg) {\n    assert(sym_tbl_msg.get(\"size\") == 16);\n    let data = await _unpack_struct_from_async(SYMBOL_TABLE_MSG, this.fh, sym_tbl_msg.get(\"offset_to_message\"));\n    yield* this._iter_links_btree_v1(data.get(\"btree_address\"), data.get(\"heap_address\"));\n  }\n  async *_iter_links_btree_v1(btree_address, heap_address) {\n    let btree = new BTreeV1Groups(this.fh, btree_address);\n    await btree.ready;\n    let heap = new Heap(this.fh, heap_address);\n    await heap.ready;\n    for (let symbol_table_address of btree.symbol_table_addresses()) {\n      let table = new SymbolTable(this.fh, symbol_table_address);\n      await table.ready;\n      table.assign_name(heap);\n      yield* Object.entries(table.get_links(heap));\n    }\n  }\n  async _get_link_from_link_msg(link_msg) {\n    let offset = link_msg.get(\"offset_to_message\");\n    return await this._decode_link_msg(this.fh, offset)[1];\n  }\n  async _decode_link_msg(data, offset) {\n    let [version, flags] = await struct.unpack_from_async(\"<BB\", data, offset);\n    offset += 2;\n    assert(version == 1);\n    let size_of_length_of_link_name = 2 ** (flags & 3);\n    let link_type_field_present = (flags & 2 ** 3) > 0;\n    let link_name_character_set_field_present = (flags & 2 ** 4) > 0;\n    let ordered = (flags & 2 ** 2) > 0;\n    let link_type;\n    if (link_type_field_present) {\n      link_type = (await struct.unpack_from_async(\"<B\", data, offset))[0];\n      offset += 1;\n    } else {\n      link_type = 0;\n    }\n    assert([0, 1].includes(link_type));\n    let creationorder;\n    if (ordered) {\n      creationorder = (await struct.unpack_from_async(\"<Q\", data, offset))[0];\n      offset += 8;\n    }\n    let link_name_character_set = 0;\n    if (link_name_character_set_field_present) {\n      link_name_character_set = (await struct.unpack_from_async(\"<B\", data, offset))[0];\n      offset += 1;\n    }\n    let encoding = link_name_character_set == 0 ? \"ascii\" : \"utf-8\";\n    let name_size_fmt = [\"<B\", \"<H\", \"<I\", \"<Q\"][flags & 3];\n    let name_size = (await struct.unpack_from_async(name_size_fmt, data, offset))[0];\n    offset += size_of_length_of_link_name;\n    let name = new TextDecoder(encoding).decode(await data.slice(offset, offset + name_size));\n    offset += name_size;\n    let address;\n    if (link_type == 0) {\n      address = (await struct.unpack_from_async(\"<Q\", data, offset))[0];\n    } else if (link_type == 1) {\n      let length_of_soft_link_value = (await struct.unpack_from_async(\"<H\", data, offset))[0];\n      offset += 2;\n      address = new TextDecoder(encoding).decode(await data.slice(offset, offset + length_of_soft_link_value));\n    }\n    return [creationorder, [name, address]];\n  }\n  async *_iter_link_from_link_info_msg(info_msg) {\n    let offset = info_msg.get(\"offset_to_message\");\n    let data = await this._decode_link_info_msg(this.fh, offset);\n    let heap_address = data.get(\"heap_address\");\n    let name_btree_address = data.get(\"name_btree_address\");\n    let order_btree_address = data.get(\"order_btree_address\");\n    if (name_btree_address != null) {\n      yield* this._iter_links_btree_v2(name_btree_address, order_btree_address, heap_address);\n    }\n  }\n  async *_iter_links_btree_v2(name_btree_address, order_btree_address, heap_address) {\n    let heap = new FractalHeap(this.fh, heap_address);\n    await heap.ready;\n    let btree;\n    const ordered = order_btree_address != null;\n    if (ordered) {\n      btree = new BTreeV2GroupOrders(this.fh, order_btree_address);\n      await btree.ready;\n    } else {\n      btree = new BTreeV2GroupNames(this.fh, name_btree_address);\n      await btree.ready;\n    }\n    let items = /* @__PURE__ */ new Map();\n    for (let record of btree.iter_records()) {\n      let data = heap.get_data(record.get(\"heapid\"));\n      let [creationorder, item] = await this._decode_link_msg(data, 0);\n      const key = ordered ? creationorder : item[0];\n      items.set(key, item);\n    }\n    let sorted_keys = Array.from(items.keys()).sort();\n    for (let key of sorted_keys) {\n      yield items.get(key);\n    }\n  }\n  async _decode_link_info_msg(data, offset) {\n    let [version, flags] = await struct.unpack_from_async(\"<BB\", data, offset);\n    assert(version == 0);\n    offset += 2;\n    if ((flags & 1) > 0) {\n      offset += 8;\n    }\n    let fmt = (flags & 2) > 0 ? LINK_INFO_MSG2 : LINK_INFO_MSG1;\n    let link_info = await _unpack_struct_from_async(fmt, data, offset);\n    let output = /* @__PURE__ */ new Map();\n    for (let [k, v] of link_info.entries()) {\n      output.set(k, v == UNDEFINED_ADDRESS2 ? null : v);\n    }\n    return output;\n  }\n  get is_dataset() {\n    return this.find_msg_type(DATASPACE_MSG_TYPE).length > 0;\n  }\n  async get_data() {\n    let msg = this.find_msg_type(DATA_STORAGE_MSG_TYPE)[0];\n    let msg_offset = msg.get(\"offset_to_message\");\n    var [version, dims, layout_class, property_offset] = await this._get_data_message_properties(msg_offset);\n    if (layout_class == 0) {\n      throw \"Compact storage of DataObject not implemented\";\n    } else if (layout_class == 1) {\n      return this._get_contiguous_data(property_offset);\n    } else if (layout_class == 2) {\n      return this._get_chunked_data(msg_offset);\n    }\n  }\n  async _get_data_message_properties(msg_offset) {\n    let dims, layout_class, property_offset;\n    let [version, arg1, arg2] = await struct.unpack_from_async(\"<BBB\", this.fh, msg_offset);\n    if (version == 1 || version == 2) {\n      dims = arg1;\n      layout_class = arg2;\n      property_offset = msg_offset;\n      property_offset += struct.calcsize(\"<BBB\");\n      property_offset += struct.calcsize(\"<BI\");\n      assert(layout_class == 1 || layout_class == 2);\n    } else if (version == 3 || version == 4) {\n      layout_class = arg1;\n      property_offset = msg_offset;\n      property_offset += struct.calcsize(\"<BB\");\n    }\n    assert(version >= 1 && version <= 4);\n    return [version, dims, layout_class, property_offset];\n  }\n  async _get_contiguous_data(property_offset) {\n    let [data_offset] = await struct.unpack_from_async(\"<Q\", this.fh, property_offset);\n    const shape = await this.shape;\n    const dtype = await this.dtype;\n    if (data_offset == UNDEFINED_ADDRESS2) {\n      let size = shape.reduce(function(a, b) {\n        return a * b;\n      }, 1);\n      return new Array(size);\n    }\n    var fullsize = shape.reduce(function(a, b) {\n      return a * b;\n    }, 1);\n    if (!(dtype instanceof Array)) {\n      if (/[<>=!@\\|]?(i|u|f|S)(\\d*)/.test(dtype)) {\n        let [item_getter, item_is_big_endian, item_size] = dtype_getter(dtype);\n        let output = new Array(fullsize);\n        const local_buffer = await this.fh.slice(data_offset, data_offset + item_size * fullsize);\n        let view = new DataView64(local_buffer);\n        for (var i = 0; i < fullsize; i++) {\n          output[i] = view[item_getter](i * item_size, !item_is_big_endian, item_size);\n        }\n        return output;\n      } else if (dtype.datatype_class === 5) {\n        return this.fh.slice(data_offset, data_offset + dtype.size);\n      } else {\n        throw \"not Implemented - no proper dtype defined\";\n      }\n    } else {\n      let dtype_class = dtype[0];\n      if (dtype_class == \"REFERENCE\") {\n        let size = dtype[1];\n        if (size != 8) {\n          throw \"NotImplementedError('Unsupported Reference type')\";\n        }\n        let ref_addresses = await this.fh.slice(data_offset, data_offset + fullsize);\n        return ref_addresses;\n      } else if (dtype_class == \"VLEN_STRING\") {\n        let character_set = dtype[2];\n        const encoding = character_set == 0 ? \"ascii\" : \"utf-8\";\n        const decoder = new TextDecoder(encoding);\n        var value = [];\n        for (var i = 0; i < fullsize; i++) {\n          const [vlen, vlen_data] = await this._vlen_size_and_data(this.fh, data_offset);\n          value[i] = decoder.decode(vlen_data);\n          data_offset += 16;\n        }\n        return value;\n      } else {\n        throw \"NotImplementedError('datatype not implemented')\";\n      }\n    }\n  }\n  async _get_chunked_data(offset) {\n    await this._get_chunk_params();\n    if (this._chunk_address == UNDEFINED_ADDRESS2) {\n      return [];\n    }\n    var chunk_btree = new BTreeV1RawDataChunks(this.fh, this._chunk_address, this._chunk_dims);\n    await chunk_btree.ready;\n    const dtype = await this.dtype;\n    const shape = await this.shape;\n    const chunks = await this.chunks;\n    const filter_pipeline = await this.get_filter_pipeline();\n    let data = await chunk_btree.construct_data_from_chunks(chunks, shape, dtype, filter_pipeline);\n    if (dtype instanceof Array && /^VLEN/.test(dtype[0])) {\n      let dtype_class = dtype[0];\n      for (var i = 0; i < data.length; i++) {\n        let [item_size, gheap_address, object_index] = data[i];\n        var gheap;\n        if (!(gheap_address in this._global_heaps)) {\n          gheap = new GlobalHeap(this.fh, gheap_address);\n          await gheap.ready;\n          this._global_heaps[gheap_address] = gheap;\n        } else {\n          gheap = this._global_heaps[gheap_address];\n        }\n        let vlen_data = gheap.objects.get(object_index);\n        if (dtype_class == \"VLEN_STRING\") {\n          let character_set = dtype[2];\n          const encoding = character_set == 0 ? \"ascii\" : \"utf-8\";\n          const decoder = new TextDecoder(encoding);\n          data[i] = decoder.decode(vlen_data);\n        }\n      }\n    }\n    return data;\n  }\n  async _get_chunk_params() {\n    if (this._chunk_params_set) {\n      return;\n    }\n    this._chunk_params_set = true;\n    var msg = this.find_msg_type(DATA_STORAGE_MSG_TYPE)[0];\n    var offset = msg.get(\"offset_to_message\");\n    var [version, dims, layout_class, property_offset] = await this._get_data_message_properties(offset);\n    if (layout_class != 2) {\n      return;\n    }\n    var data_offset;\n    if (version == 1 || version == 2) {\n      var address = (await struct.unpack_from_async(\"<Q\", this.fh, property_offset))[0];\n      data_offset = property_offset + struct.calcsize(\"<Q\");\n    } else if (version == 3) {\n      var [dims, address] = await struct.unpack_from_async(\"<BQ\", this.fh, property_offset);\n      data_offset = property_offset + struct.calcsize(\"<BQ\");\n    }\n    assert(version >= 1 && version <= 3);\n    var fmt = \"<\" + (dims - 1).toFixed() + \"I\";\n    var chunk_shape = await struct.unpack_from_async(fmt, this.fh, data_offset);\n    this._chunks = chunk_shape;\n    this._chunk_dims = dims;\n    this._chunk_address = address;\n    return;\n  }\n};\nasync function determine_data_shape(buf, offset) {\n  let version = (await struct.unpack_from_async(\"<B\", buf, offset))[0];\n  var header;\n  if (version == 1) {\n    header = await _unpack_struct_from_async(DATASPACE_MSG_HEADER_V1, buf, offset);\n    assert(header.get(\"version\") == 1);\n    offset += DATASPACE_MSG_HEADER_V1_SIZE;\n  } else if (version == 2) {\n    header = await _unpack_struct_from_async(DATASPACE_MSG_HEADER_V2, buf, offset);\n    assert(header.get(\"version\") == 2);\n    offset += DATASPACE_MSG_HEADER_V2_SIZE;\n  } else {\n    throw \"InvalidHDF5File('unknown dataspace message version')\";\n  }\n  let ndims = header.get(\"dimensionality\");\n  let dim_sizes = await struct.unpack_from_async(\"<\" + (ndims * 2).toFixed() + \"I\", buf, offset);\n  return dim_sizes.filter(function(s, i) {\n    return i % 2 == 0;\n  });\n}\nvar UNDEFINED_ADDRESS2 = struct.unpack_from(\"<Q\", new Uint8Array([255, 255, 255, 255, 255, 255, 255, 255]).buffer);\nvar GLOBAL_HEAP_ID = /* @__PURE__ */ new Map([\n  [\"collection_address\", \"Q\"],\n  [\"object_index\", \"I\"]\n]);\n_structure_size(GLOBAL_HEAP_ID);\nvar ATTR_MSG_HEADER_V1 = /* @__PURE__ */ new Map([\n  [\"version\", \"B\"],\n  [\"reserved\", \"B\"],\n  [\"name_size\", \"H\"],\n  [\"datatype_size\", \"H\"],\n  [\"dataspace_size\", \"H\"]\n]);\nvar ATTR_MSG_HEADER_V1_SIZE = _structure_size(ATTR_MSG_HEADER_V1);\nvar ATTR_MSG_HEADER_V3 = /* @__PURE__ */ new Map([\n  [\"version\", \"B\"],\n  [\"flags\", \"B\"],\n  [\"name_size\", \"H\"],\n  [\"datatype_size\", \"H\"],\n  [\"dataspace_size\", \"H\"],\n  [\"character_set_encoding\", \"B\"]\n]);\nvar ATTR_MSG_HEADER_V3_SIZE = _structure_size(ATTR_MSG_HEADER_V3);\nvar OBJECT_HEADER_V1 = /* @__PURE__ */ new Map([\n  [\"version\", \"B\"],\n  [\"reserved\", \"B\"],\n  [\"total_header_messages\", \"H\"],\n  [\"object_reference_count\", \"I\"],\n  [\"object_header_size\", \"I\"],\n  [\"padding\", \"I\"]\n]);\nvar OBJECT_HEADER_V2 = /* @__PURE__ */ new Map([\n  [\"signature\", \"4s\"],\n  [\"version\", \"B\"],\n  [\"flags\", \"B\"]\n]);\nvar DATASPACE_MSG_HEADER_V1 = /* @__PURE__ */ new Map([\n  [\"version\", \"B\"],\n  [\"dimensionality\", \"B\"],\n  [\"flags\", \"B\"],\n  [\"reserved_0\", \"B\"],\n  [\"reserved_1\", \"I\"]\n]);\nvar DATASPACE_MSG_HEADER_V1_SIZE = _structure_size(DATASPACE_MSG_HEADER_V1);\nvar DATASPACE_MSG_HEADER_V2 = /* @__PURE__ */ new Map([\n  [\"version\", \"B\"],\n  [\"dimensionality\", \"B\"],\n  [\"flags\", \"B\"],\n  [\"type\", \"B\"]\n]);\nvar DATASPACE_MSG_HEADER_V2_SIZE = _structure_size(DATASPACE_MSG_HEADER_V2);\nvar HEADER_MSG_INFO_V1 = /* @__PURE__ */ new Map([\n  [\"type\", \"H\"],\n  [\"size\", \"H\"],\n  [\"flags\", \"B\"],\n  [\"reserved\", \"3s\"]\n]);\nvar HEADER_MSG_INFO_V1_SIZE = _structure_size(HEADER_MSG_INFO_V1);\nvar HEADER_MSG_INFO_V2 = /* @__PURE__ */ new Map([\n  [\"type\", \"B\"],\n  [\"size\", \"H\"],\n  [\"flags\", \"B\"]\n]);\nvar HEADER_MSG_INFO_V2_SIZE = _structure_size(HEADER_MSG_INFO_V2);\nvar SYMBOL_TABLE_MSG = /* @__PURE__ */ new Map([\n  [\"btree_address\", \"Q\"],\n  [\"heap_address\", \"Q\"]\n]);\nvar LINK_INFO_MSG1 = /* @__PURE__ */ new Map([\n  [\"heap_address\", \"Q\"],\n  [\"name_btree_address\", \"Q\"]\n]);\nvar LINK_INFO_MSG2 = /* @__PURE__ */ new Map([\n  [\"heap_address\", \"Q\"],\n  [\"name_btree_address\", \"Q\"],\n  [\"order_btree_address\", \"Q\"]\n]);\nvar FILLVAL_MSG_V1V2 = /* @__PURE__ */ new Map([\n  [\"version\", \"B\"],\n  [\"space_allocation_time\", \"B\"],\n  [\"fillvalue_write_time\", \"B\"],\n  [\"fillvalue_defined\", \"B\"]\n]);\nvar FILLVAL_MSG_V1V2_SIZE = _structure_size(FILLVAL_MSG_V1V2);\nvar FILLVAL_MSG_V3 = /* @__PURE__ */ new Map([\n  [\"version\", \"B\"],\n  [\"flags\", \"B\"]\n]);\nvar FILLVAL_MSG_V3_SIZE = _structure_size(FILLVAL_MSG_V3);\nvar FILTER_PIPELINE_DESCR_V1 = /* @__PURE__ */ new Map([\n  [\"filter_id\", \"H\"],\n  [\"name_length\", \"H\"],\n  [\"flags\", \"H\"],\n  [\"client_data_values\", \"H\"]\n]);\nvar FILTER_PIPELINE_DESCR_V1_SIZE = _structure_size(FILTER_PIPELINE_DESCR_V1);\nvar DATASPACE_MSG_TYPE = 1;\nvar LINK_INFO_MSG_TYPE = 2;\nvar DATATYPE_MSG_TYPE = 3;\nvar FILLVALUE_MSG_TYPE = 5;\nvar LINK_MSG_TYPE = 6;\nvar DATA_STORAGE_MSG_TYPE = 8;\nvar DATA_STORAGE_FILTER_PIPELINE_MSG_TYPE = 11;\nvar ATTRIBUTE_MSG_TYPE = 12;\nvar OBJECT_CONTINUATION_MSG_TYPE = 16;\nvar SYMBOL_TABLE_MSG_TYPE = 17;\n\n// esm/high-level.js\nvar Group = class {\n  constructor(name, parent) {\n    if (parent == null) {\n      this.parent = this;\n      this.file = this;\n    } else {\n      this.parent = parent;\n      this.file = parent.file;\n    }\n    this.name = name;\n  }\n  async init(dataobjects) {\n    const index = this.file.index;\n    if (index && this.name in index) {\n      this._links = index[this.name];\n    } else {\n      this._links = await dataobjects.get_links();\n    }\n    this._dataobjects = dataobjects;\n    this._attrs = null;\n    this._keys = null;\n  }\n  get keys() {\n    if (this._keys == null) {\n      this._keys = Object.keys(this._links);\n    }\n    return this._keys.slice();\n  }\n  get values() {\n    return this.keys.map((k) => this.get(k));\n  }\n  length() {\n    return this.keys.length;\n  }\n  _dereference(ref) {\n    if (!ref) {\n      throw \"cannot deference null reference\";\n    }\n    let obj = this.file._get_object_by_address(ref);\n    if (obj == null) {\n      throw \"reference not found in file\";\n    }\n    return obj;\n  }\n  async get(y) {\n    if (typeof y == \"number\") {\n      return this._dereference(y);\n    }\n    var path = normpath(y);\n    if (path == \"/\") {\n      return this.file;\n    }\n    if (path == \".\") {\n      return this;\n    }\n    if (/^\\//.test(path)) {\n      return this.file.get(path.slice(1));\n    }\n    if (posix_dirname(path) != \"\") {\n      var [next_obj, additional_obj] = path.split(/\\/(.*)/);\n    } else {\n      var next_obj = path;\n      var additional_obj = \".\";\n    }\n    if (!(next_obj in this._links)) {\n      throw next_obj + \" not found in group\";\n    }\n    var obj_name = normpath(this.name + \"/\" + next_obj);\n    let link_target = this._links[next_obj];\n    if (typeof link_target == \"string\") {\n      try {\n        return this.get(link_target);\n      } catch (error) {\n        return null;\n      }\n    }\n    var dataobjs = new DataObjects(this.file._fh, link_target);\n    await dataobjs.ready;\n    if (dataobjs.is_dataset) {\n      if (additional_obj != \".\") {\n        throw obj_name + \" is a dataset, not a group\";\n      }\n      return new Dataset(obj_name, dataobjs, this);\n    } else {\n      var new_group = new Group(obj_name, this);\n      await new_group.init(dataobjs);\n      return new_group.get(additional_obj);\n    }\n  }\n  visit(func) {\n    return this.visititems((name, obj) => func(name));\n  }\n  visititems(func) {\n    var root_name_length = this.name.length;\n    if (!/\\/$/.test(this.name)) {\n      root_name_length += 1;\n    }\n    var queue = this.values.slice();\n    while (queue) {\n      let obj = queue.shift();\n      if (queue.length == 1)\n        console.log(obj);\n      let name = obj.name.slice(root_name_length);\n      let ret = func(name, obj);\n      if (ret != null) {\n        return ret;\n      }\n      if (obj instanceof Group) {\n        queue = queue.concat(obj.values);\n      }\n    }\n    return null;\n  }\n  get attrs() {\n    if (this._attrs == null) {\n      this._attrs = this._dataobjects.get_attributes();\n    }\n    return this._attrs;\n  }\n};\nvar File = class extends Group {\n  constructor(fh, filename, options) {\n    super(\"/\", null);\n    this.ready = this.init(fh, filename, options);\n  }\n  async init(fh, filename, options) {\n    var superblock = new SuperBlock(fh, 0);\n    await superblock.ready;\n    var offset = await superblock.get_offset_to_dataobjects();\n    var dataobjects = new DataObjects(fh, offset);\n    await dataobjects.ready;\n    this.parent = this;\n    this.file = this;\n    this.name = \"/\";\n    this._dataobjects = dataobjects;\n    this._attrs = null;\n    this._keys = null;\n    this._fh = fh;\n    this.filename = filename || \"\";\n    this.mode = \"r\";\n    this.userblock_size = 0;\n    if (options && options.index) {\n      this.index = options.index;\n    } else {\n      let index_offset;\n      if (options && options.indexOffset) {\n        index_offset = options.indexOffset;\n      } else {\n        const attrs = await this.attrs;\n        if (attrs.hasOwnProperty(\"_index_offset\")) {\n          index_offset = attrs[\"_index_offset\"];\n        } else {\n          const indexName = this.indexName || \"_index\";\n          const index_link = await dataobjects.find_link(indexName);\n          if (index_link) {\n            index_offset = index_link[1];\n          }\n        }\n      }\n      if (index_offset) {\n        try {\n          const dataobject = new DataObjects(fh, index_offset);\n          await dataobject.ready;\n          const comp_index_data = await dataobject.get_data();\n          const inflated = ungzip_1(comp_index_data);\n          const json = new TextDecoder().decode(inflated);\n          this.index = JSON.parse(json);\n        } catch (e) {\n          console.error(`Error loading index by offset ${e}`);\n        }\n      }\n    }\n    if (this.index && this.name in this.index) {\n      this._links = this.index[this.name];\n    } else {\n      this._links = await dataobjects.get_links();\n    }\n  }\n  _get_object_by_address(obj_addr) {\n    if (this._dataobjects.offset == obj_addr) {\n      return this;\n    }\n    return this.visititems((y) => {\n      y._dataobjects.offset == obj_addr ? y : null;\n    });\n  }\n};\nvar Dataset = class extends Array {\n  constructor(name, dataobjects, parent) {\n    super();\n    this.parent = parent;\n    this.file = parent.file;\n    this.name = name;\n    this._dataobjects = dataobjects;\n    this._attrs = null;\n    this._astype = null;\n  }\n  get value() {\n    var data = this._dataobjects.get_data();\n    if (this._astype == null) {\n      return this.getValue(data);\n    }\n    return data.astype(this._astype);\n  }\n  get shape() {\n    return this._dataobjects.shape;\n  }\n  get attrs() {\n    return this._dataobjects.get_attributes();\n  }\n  get dtype() {\n    return this._dataobjects.dtype;\n  }\n  get fillvalue() {\n    return this._dataobjects.get_fillvalue();\n  }\n  async to_array() {\n    const value = await this.value;\n    const shape = await this.shape;\n    return create_nested_array(value, shape);\n  }\n  async getValue(data) {\n    const dtype = await this.dtype;\n    if (dtype.startsWith(\"S\")) {\n      return (await data).map((s) => s.substr(0, s.indexOf(\"\\0\")));\n    } else {\n      return data;\n    }\n  }\n};\nfunction posix_dirname(p) {\n  let sep = \"/\";\n  let i = p.lastIndexOf(sep) + 1;\n  let head = p.slice(0, i);\n  let all_sep = new RegExp(\"^\" + sep + \"+$\");\n  let end_sep = new RegExp(sep + \"$\");\n  if (head && !all_sep.test(head)) {\n    head = head.replace(end_sep, \"\");\n  }\n  return head;\n}\nfunction normpath(path) {\n  return path.replace(/\\/(\\/)+/g, \"/\");\n}\nfunction create_nested_array(value, shape) {\n  const total_length = value.length;\n  const dims_product = shape.reduce((previous, current) => previous * current, 1);\n  if (total_length !== dims_product) {\n    console.warn(`shape product: ${dims_product} does not match length of flattened array: ${total_length}`);\n  }\n  let output = value;\n  const subdims = shape.slice(1).reverse();\n  for (let dim of subdims) {\n    const new_output = [];\n    const { length } = output;\n    let cursor = 0;\n    while (cursor < length) {\n      new_output.push(output.slice(cursor, cursor += dim));\n    }\n    output = new_output;\n  }\n  return output;\n}\n/*! pako 2.0.4 https://github.com/nodeca/pako @license (MIT AND Zlib) */\n\nasync function openH5File(options) {\n\n    // Some clients (notably igv-webapp) pass a File reference in the url field.  Fix this\n    if(options.url && isBlobLike(options.url)) {\n        options.file = options.url;\n        options.url = undefined;\n    }\n\n    const isRemote = options.url !== undefined;\n    let fileReader = options.reader ? options.reader : getReaderFor(options);\n\n    // Set default options appropriate for spacewalk\n    const fetchSize = options.fetchSize || 2000;\n    const maxSize = options.maxSize || 200000;\n\n    if (isRemote) {\n        fileReader = new BufferedFile({file: fileReader, fetchSize, maxSize});\n    }\n    const asyncBuffer = new AsyncBuffer(fileReader);\n\n    // Optional external index -- this is not common\n    const index = await readExternalIndex(options);\n    const indexOffset = options.indexOffset;\n\n    // Create HDF5 file\n    const filename = getFilenameFor(options);\n    const hdfFile = new File(asyncBuffer, filename, {index, indexOffset});\n    await hdfFile.ready;\n    return hdfFile\n}\n\nasync function readExternalIndex(options) {\n\n    let indexReader;\n    if(options.indexReader) {\n        indexReader = options.indexReader;\n    }\n    else if(options.index) {\n        return options.index\n    } else if (options.indexURL) {\n        indexReader = new RemoteFile({url: options.indexURL});\n    } else if (options.indexPath) {\n        indexReader = new NodeLocalFile({path: options.indexPath});\n    } else if (options.indexFile) {\n        indexReader = new BlobFile({file: options.indexFile});\n    }\n    if (indexReader) {\n        const indexFileContents = await indexReader.read();\n        const indexFileJson = new TextDecoder().decode(indexFileContents);\n        return JSON.parse(indexFileJson)\n    } else {\n        return undefined\n    }\n}\n\n\nfunction getReaderFor(options) {\n    if (options.url) { // An absolute or relative URL\n        return new RemoteFile(options)\n    } else if (options.path) { // A file path\n        return new NodeLocalFile(options)\n    } else if (options.file) { // A Browser file blob\n        return new BlobFile(options.file)\n    } else {\n        throw Error(\"One of 'url', 'path (node only)', or 'file (browser only)' must be specified\")\n    }\n}\n\nfunction getFilenameFor(options) {\n    if (options.url) {\n        return getFilename(options.url)\n    } else if (options.path) {\n        return getFilename(options.path)\n    } else if (options.file) {\n        return options.file.name\n    }\n}\n\n/**\n * Wraps an io.Reader in an interface jsfive-async expects*\n */\nclass AsyncBuffer {\n    constructor(fileReader) {\n        this.fileReader = fileReader;\n    }\n\n    async slice(start, end) {\n        return this.fileReader.read(start, end - start)\n    }\n}\n\nfunction getFilename(pathOrURL) {\n    const idx = pathOrURL.lastIndexOf(\"/\");\n    return idx > 0 ? pathOrURL.substring(idx + 1) : pathOrURL\n}\n\nfunction isBlobLike(obj) {\n    return typeof obj.slice === 'function' && typeof obj.arrayBuffer === 'function'\n}\n\nfunction unflattenIndex(index) {\n\n    const makeObject = (name) => {\n        return {name: name, children: []}\n    };\n\n    const objectMap = {};\n\n    for (let key of Object.keys(index)) {\n\n        let obj;\n        if (objectMap.hasOwnProperty(key)) {\n            obj = objectMap[key];\n        } else {\n            obj = makeObject(key);\n            objectMap[key] = obj;\n        }\n\n        const tmp = index[key];\n        for (let childName of Object.keys(tmp)) {\n            let child;\n            const childKey = key + (key.endsWith('/') ? '' : '/') + childName;\n            if (objectMap.hasOwnProperty(childKey)) {\n                child = objectMap[childKey];\n            } else {\n                child = makeObject(childKey);\n                objectMap[childKey] = child;\n            }\n            obj.children.push(child);\n        }\n\n    }\n\n    const rootObject = objectMap['/'];\n\n    return rootObject\n\n}\n\nexport { openH5File, unflattenIndex };\n","import {openH5File} from \"../../node_modules/hdf5-indexed-reader/dist/hdf5-indexed-reader.esm.js\"\n\nclass HDF5Reader {\n    \n    constructor(h5_file, bin_size=100000){\n\n        this.h5_file = h5_file;\n        this.bin_size = bin_size;\n        this.h5_obj = undefined\n    }\n    \n    async fetch(){\n\n        if(!this.h5_obj) {\n            this.h5_obj = await openH5File({\n                url: this.h5_file,\n                fetchSize: 1000000,\n                maxSize: 200000000\n            })\n        }\n        return this.h5_obj\n    }\n\n    async get_keys(){\n        /* returns a list of keys of the pytor file*/\n        let h5_obj = await this.fetch();\n\n        return h5_obj.keys\n    }\n\n    async get_rd_signal(bin_size=this.bin_size){\n\n        let h5_obj = await this.fetch();\n        let h5_obj_keys = h5_obj.keys;\n\n        // console.log(h5_obj_keys)\n        let signal_bin = new ParseSignals(h5_obj_keys);\n        let rd_bins = signal_bin.get_rd_bins()\n        let snp_bins = signal_bin.get_snp_bins()\n        this.available_bins = [...new Set(rd_bins, snp_bins)]\n\n        // let bin_size = this.bin_size\n        if(! this.available_bins.includes(bin_size)){\n            bin_size = this.available_bins.at(-1);    \n        }\n\n        const chr_ds = await h5_obj.get(\"rd_chromosomes\")\n        const type = await chr_ds.dtype\n        const t0 = Date.now()\n        let rd_chromosomes = await chr_ds.value\n        //console.log(`get_rd_signal rd_chromosomes  ${Date.now() - t0}`)\n        //rd_chromosomes = fixString(rd_chromosomes)\n        let rd_flag = \"\"\n\n        // get rd stat\n        let rd_stat = await this.rd_stat(h5_obj, h5_obj_keys, bin_size)\n        \n        var wigFeatures = []\n        var wigFeatures_gc = []\n        var wigFeatures_rd_call_meanshift = []\n        var wigFeatures_rd_call_combined = []\n        var wigFeatures_baf1 = []\n        var wigFeatures_baf2 = []\n\n        for (let chrom of rd_chromosomes) {\n            // for normal rd signal\n            var signal_rd = `his_rd_p_${chrom}_${bin_size}${rd_flag}`\n            let chr_wig = await this.get_chr_signal(h5_obj, h5_obj_keys, chrom, bin_size, signal_rd, rd_stat)\n            wigFeatures = wigFeatures.concat(chr_wig)\n            \n            // rd gc corrected\n            var signal_rd_gc = `his_rd_p_${chrom}_${bin_size}_GC`\n            let chr_wig_gc = await this.get_chr_signal(h5_obj, h5_obj_keys, chrom, bin_size, signal_rd_gc, rd_stat)\n            wigFeatures_gc = wigFeatures_gc.concat(chr_wig_gc)\n\n            // rd call MeanShift\n            \n            let signal_rd_call = `his_rd_p_${chrom}_${bin_size}_partition_GC_merge`\n            let chr_wig_rd_call_meanshift = await this.get_chr_signal(h5_obj, h5_obj_keys, chrom, bin_size, signal_rd_call, rd_stat)\n            wigFeatures_rd_call_meanshift = wigFeatures_rd_call_meanshift.concat(chr_wig_rd_call_meanshift)\n            \n            let chr_wig_rd_call = await this.rd_call_combined(h5_obj, h5_obj_keys, chrom, bin_size, rd_stat)\n            wigFeatures_rd_call_combined = wigFeatures_rd_call_combined.concat(chr_wig_rd_call)\n\n            // baf likelihood\n            let signal_baf_1 = `snp_likelihood_${chrom}_${bin_size}_mask`\n            let chr_wig_bafs = await this.get_baf_signals(h5_obj, h5_obj_keys, chrom, bin_size, signal_baf_1)\n\n            // let signal_baf_1 = `snp_i1_${chrom}_${bin_size}_mask`\n            // let chr_wig_bafs = await this.get_baf_signals_v2(h5_obj, h5_obj_keys, chrom, bin_size, signal_baf_1)\n\n            wigFeatures_baf1 = wigFeatures_baf1.concat(chr_wig_bafs[0])\n            wigFeatures_baf2 = wigFeatures_baf2.concat(chr_wig_bafs[1])\n            // this.rd_call_combined(h5_obj, h5_obj_keys, chrom, bin_size, rd_stat)\n        }\n        this.callers = []\n        if (wigFeatures_rd_call_combined.length != 0){\n            this.callers.push('ReadDepth')\n        }\n        if (wigFeatures_rd_call_combined.length != 0){\n            this.callers.push('2D')\n        }\n\n        var obj = {}\n        var signal_obj = {\n            \"RD_Raw\": wigFeatures,\n            \"RD_Raw_gc_coor\" : wigFeatures_gc,\n            \"ReadDepth\": wigFeatures_rd_call_meanshift,\n            \"2D\": wigFeatures_rd_call_combined,\n            \"BAF1\": wigFeatures_baf1,\n            \"BAF2\": wigFeatures_baf2\n        }\n        obj[bin_size] = signal_obj\n        return obj\n    }\n\n    decode_segments(segments_arr){\n        let max = 2 ** 32 - 1\n        let segments = []\n        let l = []\n        for (let x of segments_arr){\n            if(x == max){\n                segments.push(l)\n                l = []\n            } else{\n                l.push(x)\n            }\n        }\n        return segments\n    }\n\n   async  rd_call_combined(h5_obj, h5_obj_keys, chrom, bin_size, rd_stat){\n        let chr_wig = [];\n        \n        let segments\n        let mosaic_call_segments = `his_rd_p_${chrom}_${bin_size}_partition_GC_mosaic_segments_2d`\n        if (h5_obj_keys.includes(mosaic_call_segments)){\n            const chrom_dataset = await h5_obj.get(mosaic_call_segments)\n            const t0 = Date.now()\n            let chrom_data = await chrom_dataset.value\n            //console.log(`rd_call_combined ${mosaic_call_segments}  ${Date.now() - t0}`)\n            segments = this.decode_segments(chrom_data)\n            \n        }\n\n        let mosaic_calls = `his_rd_p_${chrom}_${bin_size}_partition_GC_mosaic_call_2d`\n        if (h5_obj_keys.includes(mosaic_calls)){\n            const segments_call_dataset = await h5_obj.get(mosaic_calls)\n            let segments_call = await segments_call_dataset.to_array() //create_nested_array(value, shape)\n            segments.forEach((ind_segment, segment_idx) => {\n                ind_segment.forEach((bin_value, bin_idx) =>{\n                    chr_wig.push({chr:chrom, start: bin_value*bin_size, end: (bin_value+1) * bin_size, value: (segments_call[0][segment_idx]/rd_stat[4]) *2})\n                })\n            })\n        }\n\n        return chr_wig\n        \n    }\n\n   async rd_stat(h5_obj, h5_obj_keys, bin_size){\n        /* \n        returns a list for rd statistics information \n        paramter\n        ---------\n        h5_obj: cnvpytor read object\n        h5_obj_keys: a list of available signal names\n        bin_size: bin size\n        \n        */\n        \n        let rd_stat_signal =  `rd_stat_${bin_size}_auto`\n        let rd_stat;\n        if (h5_obj_keys.includes(rd_stat_signal)){\n            const rd_stat_dataset = await h5_obj.get(rd_stat_signal)\n            const t0 = Date.now()\n            rd_stat = await rd_stat_dataset.value\n            //console.log(`rd_stat_signal ${rd_stat_signal}  ${Date.now() - t0}`)\n        }\n        return rd_stat\n    }\n\n    \n    async get_chr_signal(h5_obj, h5_obj_keys, chrom, bin_size, signal_name, rd_stat){\n        /* return a list of dictionary for a chromosome */\n        let chr_wig = [];\n        \n        if (h5_obj_keys.includes(signal_name)){\n            const chrom_dataset = await h5_obj.get(signal_name)\n            const t0 = Date.now()\n            let chrom_data = await chrom_dataset.value\n            //console.log(`chr_signal ${signal_name}  ${Date.now() - t0}`)\n            chrom_data.forEach((bin_value, bin_idx) => {\n                chr_wig.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: (bin_value/rd_stat[4]) *2})\n            });\n        }\n        return chr_wig\n    }\n\n    async get_baf_signals(h5_obj, h5_obj_keys, chrom, bin_size, signal_name){\n        /* return two list of dictionary*/\n        let chr_wig_1 = [];\n        let chr_wig_2 = [];\n        if (h5_obj_keys.includes(signal_name)){\n            let chrom_dataset = await h5_obj.get(signal_name)\n            let chrom_data = await chrom_dataset.to_array() //create_nested_array(value, shape)\n            chrom_data.forEach((bin_value, bin_idx) => {\n                let max_value =  Math.max(...bin_value);\n                const res = bin_value.indexOf(max_value);\n                let lh = Math.max(res / 200, 1 - res / 200);\n                chr_wig_1.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: -2 * lh})\n                if(lh != 0.5){\n                    chr_wig_2.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: -2 *(1-lh)})\n                }\n            });\n        }\n        return [chr_wig_1, chr_wig_2]\n    }\n\n    async get_baf_signals_v2(h5_obj, h5_obj_keys, chrom, bin_size, signal_name){\n        \n        /* return two list of dictionary*/\n        let chr_wig_1 = [];\n        let chr_wig_2 = [];\n        if (h5_obj_keys.includes(signal_name)){\n            let chrom_dataset = await h5_obj.get(signal_name)\n            let chrom_data = await chrom_dataset.to_array() //create_nested_array(value, shape)\n            chrom_data.forEach((lh, bin_idx) => {\n                if (!isNaN(lh)){\n                    chr_wig_1.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: -2 * ( 0.5 - lh )})\n                    if(lh != 0.5){\n                        chr_wig_2.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: -2 * ( 0.5 + lh )})\n                    }\n                }\n            });\n        }\n        console.log(chrom, chr_wig_1, chr_wig_2)\n        return [chr_wig_1, chr_wig_2]\n\n    }\n}\n\nclass ParseSignals{\n\n    constructor(signals){\n        /*\n        Parse a signal names\n\n        parameter\n        ---------\n        signals: List of keys in pytor files\n        */\n        this.signals = signals\n    }\n\n    get_rd_bins(){\n        /* return list of rd bins */\n        let rd_keys = [];\n        this.signals.forEach( val => {\n            let match = val.match(/^his_rd_p_(.*)_(\\d+)$/);\n            if(match){\n                rd_keys.push({chr:match[1], bin_size:match[2]})\n            }});\n        const rd_bins = [...new Set(rd_keys.map(item => Number(item.bin_size)))];\n        return rd_bins\n    }\n\n    get_snp_bins(){\n        /* return list of snp bins */\n        let slected_signals = [];\n        this.signals.forEach( val => {\n            let match = val.match(/^snp_likelihood_(.*)_(\\d+)_mask$/);\n            if(match){\n                slected_signals.push({chr:match[1], bin_size:match[2]})\n            }});\n        const bins = [...new Set(slected_signals.map(item => Number(item.bin_size)))];\n        return bins\n    }\n}\n\nfunction fixString(strings) {\n\n    return strings.map(s => s.substr(0,s.indexOf('\\0')))\n\n}\n\n// function to_array(value, shape) {\n//     const { json_value, metadata } = this;\n//     const { shape } = metadata;\n//     if (!isIterable(json_value) || typeof json_value === \"string\") {\n//         return json_value;\n//     }\n//     let nested = create_nested_array(json_value, shape);\n//     return nested;\n// }\n\nfunction create_nested_array(value, shape) {\n    // check that shapes match:\n    const total_length = value.length;\n    const dims_product = shape.reduce((previous, current) => (previous * current), 1);\n    if (total_length !== dims_product) {\n        console.warn(`shape product: ${dims_product} does not match length of flattened array: ${total_length}`);\n    }\n    // Get reshaped output:\n    let output = value;\n    const subdims = shape.slice(1).reverse();\n    for (let dim of subdims) {\n        // in each pass, replace input with array of slices of input\n        const new_output = [];\n        const { length } = output;\n        let cursor = 0;\n        while (cursor < length) {\n            new_output.push(output.slice(cursor, cursor += dim));\n        }\n        output = new_output;\n    }\n    return output;\n}\n\n\n\n\n\nexport default HDF5Reader\n","\nclass GetFit {\n  constructor(allBins) {\n      this.allBins = allBins\n  }\n  getValues() {\n      const bins = Object.values(this.allBins).reduce(\n          (binResult, bin) => { return binResult.concat(bin.filter(a => a.binScore > 0).map(a => a.binScore)) }, [])\n      return bins\n  }\n  getMean(data) {\n      return (data.reduce(function (a, b) { return a + b; }) / data.length);\n  }\n  fit_data() {\n      let rd_list = this.getValues()\n      let distParmas = getDistParams(rd_list)\n      return distParmas\n  }\n\n  histogram(data, bins) {\n      const step = bins[1] - bins[0];\n      const hist_bins = [];\n\n      data.forEach((value, index) => {\n          bins.forEach((bin_value, bin_index) => {\n              if (!hist_bins[bin_value]) {\n                  hist_bins[bin_value] = { count: 0 };\n              }\n              if (bin_value <= value && value < bin_value + step) {\n                  hist_bins[bin_value].count++;\n                  return false;\n              }\n          });\n      });\n      const dist_p = []\n      hist_bins.forEach((bin, index) => { dist_p.push(bin.count); });\n      return dist_p\n  }\n\n}\n\nfunction range_function(start, stop, step) {\n  const data_array = Array(Math.ceil((stop - start) / step))\n    .fill(start)\n    .map((x, y) => x + y * step);\n  return data_array;\n}\n\nfunction Gaussian([a, x0, sigma]) {\n  return x =>\n    (a * Math.exp(-Math.pow(x - x0, 2) / (2 * Math.pow(sigma, 2)))) / (Math.sqrt(2 * Math.PI) * sigma);\n}\n\nfunction filterOutliers(someArray) {\n\n  if (someArray.length < 4)\n    return someArray;\n\n  let values, q1, q3, iqr, maxValue, minValue;\n\n  values = someArray.slice().sort((a, b) => a - b); //copy array fast and sort\n\n  if ((values.length / 4) % 1 === 0) { //find quartiles\n    q1 = 1 / 2 * (values[(values.length / 4)] + values[(values.length / 4) + 1]);\n    q3 = 1 / 2 * (values[(values.length * (3 / 4))] + values[(values.length * (3 / 4)) + 1]);\n  } else {\n    q1 = values[Math.floor(values.length / 4 + 1)];\n    q3 = values[Math.ceil(values.length * (3 / 4) + 1)];\n  }\n\n  iqr = q3 - q1;\n  maxValue = q3 + iqr * 1.5;\n  minValue = q1 - iqr * 1.5;\n\n  return values.filter((x) => (x >= minValue) && (x <= maxValue));\n}\n\nfunction getDistParams(bins) {\n  let filteredBins = filterOutliers(bins)\n  const n = filteredBins.length\n  const mean = filteredBins.reduce((a, b) => a + b) / n\n  const std = Math.sqrt(filteredBins.map(x => Math.pow(x - mean, 2)).reduce((a, b) => a + b) / n)\n  return [mean, std]\n}\n\nfunction linspace(a, b, n) {\n  if (typeof n === \"undefined\") n = Math.max(Math.round(b - a) + 1, 1);\n  if (n < 2) {\n      return n === 1 ? [a] : [];\n  }\n  var ret = Array(n);\n  n--;\n  for (let i = n; i >= 0; i--) {\n      ret[i] = (i * b + (n - i) * a) / n;\n  }\n  return ret;\n}\n\nexport default { range_function, getDistParams, linspace, GetFit};\n","\n\n/** \n* Evaluates the cumulative distribution function (CDF) for a Student's t distribution with degrees of freedom `v` at a value `t`.\n*\n* @params {number} t - value for the t test\n* @params {PositiveNumber} v - degree of freedom\n* @returns {Probability} evaluated CDF\n*/\nfunction TdistributionCDF(t, v){\n    if (isNaN( t ) || isNaN( v ) || v <= 0.0) {\n\t\treturn NaN;\n\t}\n\tif ( t === 0.0 ) {\n\t\treturn 0.5;\n\t}\n    return 1/2 + (1/2 * (incompbeta(1/2*v, 1/2, 1) - incompbeta(1/2*v, 1/2, v/(v+t*t)))) * Math.sign( t)\n\n}\n\n\n/** \n* incompbeta(a,b,x) evaluates incomplete beta function, here a, b > 0 and 0 <= x <= 1. This function requires contfractbeta(a,b,x, ITMAX = 200) \n*  code translated from  https://malishoaib.wordpress.com/2014/04/15/the-beautiful-beta-functions-in-raw-python/\n*\n* @params\n* @params\n* @params\n* @returns \n*/\nfunction incompbeta(a, b, x){\n     \n    if(x == 0){\n        return 0;\n    }\n    else if (x == 1){\n        return 1;\n    }else\n    {\n        let lbeta = lgamma(a+b) - lgamma(a) - lgamma(b) + a * Math.log(x) + b * Math.log(1-x)\n        if (x < (a+1) / (a+b+2)){\n            return Math.exp(lbeta) * contfractbeta(a, b, x) / a;\n        }\n        else{\n            return 1 - Math.exp(lbeta) * contfractbeta(b, a, 1-x) / b;\n        }\n    }\n}\n\n/**\n * contfractbeta() evaluates the continued fraction form of the incomplete Beta function; incompbeta().  \n *   (Code translated from: Numerical Recipes in C.)\n * \n * @param {*} a \n * @param {*} b \n * @param {*} x \n * @param {*} ITMAX \n * @returns \n */\nfunction contfractbeta(a,b,x, ITMAX = 1000){\n     \n    let EPS = 3.0e-7;\n    let az = 1.0;\n    let am = 1.0;\n    let bm = 1.0;\n    let qab = a + b\n    let qap = a + 1.0\n    let qam = a-1.0\n    let bz = 1.0 - qab*x/qap\n     \n    //for i in range(ITMAX):\n    for(let i =0; i<= ITMAX; i++){\n        let em = parseFloat(i+1)\n        let tem = em + em\n        let d = em*(b-em)*x/((qam+tem)*(a+tem))\n        let ap = az + d*am\n        let bp = bz+d*bm\n        d = -(a+em)*(qab+em)*x/((qap+tem)*(a+tem))\n        let app = ap+d*az\n        let bpp = bp+d*bz\n        let aold = az\n        am = ap/bpp\n        bm = bp/bpp\n        az = app/bpp\n        bz = 1.0\n        if (Math.abs(az-aold)<(EPS * Math.abs(az))){\n            return az\n        }\n    }\n}\n\n/**\n * Evaluates factorial of a number\n * \n * @param {Number} xf - Integer number \n * @returns factorial of the number\n */\nfunction factorial(xf) {\n    if ((xf == 0) || (xf == 1)) return 1;\n    else {\n        let result = (xf * factorial(xf - 1))\n        return result\n    }\n}\n\n/**\n * Evalues factorial for an integer or fraction using either either factorial or gamma function\n * \n * @param {Number} a - integar or fraction number\n * @returns value of a gamma function\n */\nexport function gamma(a){\n    let gamma\n    \n    var qc = [75122.6331530, 80916.6278952, 36308.2951477, 8687.24529705, 1168.92649479, 83.8676043424, 2.50662827511];\n    \n    var sum1 = 0;\n    var prod1 = 1;\n    if (a == 0) { \n        gamma = 1e99; \n    }else {\n        if ((a % 1) == 0) {//if integer\n            gamma = factorial(a - 1);\n        }\n        else { //not integer\n            for (let j = 0; j < qc.length; j++) {\n                sum1 = sum1 + qc[j] * Math.pow(a, j);\n                prod1 = prod1 * (a + j);\n            }\n            gamma = (sum1 * Math.pow((a + 5.5), (a + 0.5))) * Math.exp(-(a + 5.5)) / prod1;\n        }\n    }\n    \n    return gamma\n}\n\n/**\n * \n * @param {Number} xg  - integar or fraction number\n * @returns natural log of gamma function\n */\n\nfunction lgamma(xg){\n    return Math.log(gamma(xg))\n}\n\nfunction t_test_1_sample(mean, m, s, n) {\n    if (s == 0) s = 1;\n    var t = ((mean - m) / s) * Math.sqrt(n)\n    var p = 1.0 - TdistributionCDF(Math.abs(t), (n - 1))\n    return p\n}\n\nfunction t_test_2_samples(m1, s1, n1, m2, s2, n2) {\n    if (s1 == 0) s1 = 1;\n    if (s2 == 0) s2 = 1;\n    var t = (m1 - m2) / Math.sqrt(s1 ** 2 / n1 + s2 ** 2 / n2);\n    var df = ((s1 ** 2 / n1 + s2 ** 2 / n2) ** 2 * (n1 - 1) * (n2 - 1)) /\n        ((s1 ** 4 * (n2 - 1)) / n1 ** 2 + (s2 ** 4 * (n1 - 1)) / n2 ** 2);\n\n    var p = 1.0 - TdistributionCDF(Math.abs(t), parseInt(df + 0.5))\n\n    return p\n}\n\nexport default {TdistributionCDF, gamma, t_test_1_sample, t_test_2_samples};","import t_dist from './t_dist.js'\nimport g_utils from './GeneralUtil.js'\n\n\nclass CombinedCaller{\n    constructor(wigFeatures, binSize) {\n        this.wigFeatures = wigFeatures\n        this.binSize = binSize\n        // let fit_obj = this.get_fit()\n        // this.globalMean = fit_obj.globalMean\n        // this.globalStd = fit_obj.globalStd\n    }\n    get_fit(){\n        var fit_info = new g_utils.GetFit(this.wigFeatures)\n        var [globalMean, globalStd] = fit_info.fit_data()\n\n        return {globalMean:globalMean, globalStd:globalStd}\n       \n    }\n    async call_2d(omin=null, mcount=null, event_type=\"both\", max_distance=0.1, baf_threshold=0, max_copy_number=10, min_cell_fraction=0.0){\n        \n        let fit_obj = this.get_fit()\n        this.globalMean = fit_obj.globalMean\n        this.globalStd = fit_obj.globalStd\n        \n        let overlap_min = omin==null ?  0.05 * this.binSize / 3e9: omin ;\n        let min_count = mcount == null ? parseInt(this.binSize / 10000) : mcount ;\n\n        let gstat_rd0 = []\n        let gstat_rd_all = []\n        let gstat_rd = []\n        let gstat_baf = []\n        let gstat_error = []\n        let gstat_lh = []\n        let gstat_n = []\n        let gstat_event = []\n        \n        for (const [chr, wig] of Object.entries(this.wigFeatures)) {\n            let segments = []\n            let levels = []\n            let likelihoods = []\n            \n            wig.forEach((bin, bin_idx) => {\n                if (bin.hets_count > 4 ){\n                    \n                    if( bin.dp_count > min_count ){\n                        segments.push([bin_idx])\n                        levels.push(bin.binScore)\n                        likelihoods.push(bin.likelihood_score)\n                        delete bin.likelihood_score\n                        \n                    }\n                }\n            })\n\n            let diff_level = []\n            for(let i=1; i<levels.length; i++){\n                diff_level.push(Math.abs(levels[i] - levels[i-1]))\n            }\n            let min_flank = [0]\n            for(let i=1; i<diff_level.length; i++){\n                min_flank.push(Math.min(diff_level[i-1], diff_level[i]))    \n            }\n            min_flank.push(0)\n\n            let error  = levels.map((x, x_idx) => {return Math.sqrt(Math.sqrt(x) ** 2 + this.globalStd ** 2 + Math.pow(min_flank[x_idx]/2, 2));});\n            \n            let overlaps = []\n            \n            for(let i=0; i< segments.length-1; i++){\n                \n                let lh_overlap = 0\n                try{\n                    lh_overlap = likelihood_overlap(likelihoods[i], likelihoods[i+1])\n                }catch{\n                    console.log(\"Overlap failed: \", i, likelihoods[i], segments[i+1], likelihoods[i+1])\n                }\n                \n                let rd_overlap = normal_overlap_approx(levels[i], error[i], levels[i+1], error[i+1])\n                overlaps.push(rd_overlap * lh_overlap)\n                \n            }\n            \n            while(overlaps.length >0) {\n                overlaps = overlaps.filter(num => typeof num === \"number\");\n                \n                let max_overlap = arrayMax(overlaps)\n                if(isNaN(max_overlap)){\n                    console.log('NaN value', overlaps)\n                }\n                if(max_overlap < overlap_min){\n                    // console.log(\"maxoverlap \",max_overlap,  \"is smaller than overlap min\")\n                    break\n                }\n                let i = overlaps.indexOf(max_overlap)\n                \n                let merge_level = normal_merge(levels[i], error[i], levels[i + 1], error[i + 1]);\n                \n                let nlh\n                let nlh_sum;\n                try{\n                    nlh = likelihoods[i].map((l_value, l_idx) => { return l_value * likelihoods[i+1][l_idx]})\n                \n                    nlh_sum = nlh.reduce((a, c_value) => {return a + c_value});\n                    \n                }catch{\n                    console.log(likelihoods)\n                    console.log('max_overlap:', max_overlap, i, overlaps.length)\n                    console.log('likelihood: ', i ,likelihoods[i], likelihoods[i+1])\n                    console.log('nlh: ', nlh_sum)\n                }\n                // nlh_sum = nlh.reduce((a, c_value) => {return a + c_value});\n\n                levels[i] = merge_level.nl\n                error[i] = merge_level.ne\n                \n                likelihoods[i] = nlh.map(function(item) { return item/nlh_sum } )\n                \n                segments[i].push(...segments[i+1])\n\n                levels.splice(i + 1, 1)\n                error.splice(i + 1, 1)\n                segments.splice(i + 1, 1)\n                likelihoods.splice(i + 1, 1)\n                overlaps.splice(i, 1)\n                \n                if(i < overlaps.length){\n                    \n                    let rd_overlap = normal_overlap_approx(levels[i], error[i], levels[i+1], error[i+1])\n                    let new_overlap = rd_overlap * likelihood_overlap(likelihoods[i], likelihoods[i + 1])\n                    \n                    overlaps[i] = new_overlap\n                }\n                if(i > 0){\n                    let new_overlap = normal_overlap_approx(levels[i - 1], error[i - 1], levels[i], error[i]) \n                    * likelihood_overlap(likelihoods[i - 1], likelihoods[i])\n                    overlaps[i - 1] = new_overlap\n                }\n\n            }\n\n            let iter_count = 0\n            let ons = -1\n            while(true){\n                overlaps = []\n                for(let i=0; i< levels.length; i++){\n                    for(let j=i; j<levels.length; j++){\n                        if(segments[j][0] - segments[i].at(-1) < max_distance * (segments[i].length + segments[j].length)){\n                            overlaps.push(normal_overlap_approx(levels[i], error[i], levels[j], error[j]) * likelihood_overlap(likelihoods[i], likelihoods[j]))\n                        }\n                    }\n                }\n                \n                if(overlaps.length == 0){\n                    break\n                }\n                let max_overlap = arrayMax(overlaps)\n                if(max_overlap < overlap_min){\n                    break\n                }\n                let i = 0 \n                let j = 1\n                while (i < segments.length - 1){\n                    let overlap_value = normal_overlap_approx(levels[i], error[i], levels[j], error[j]) * likelihood_overlap(likelihoods[i], likelihoods[j])\n\n                    if((segments[j][0] - segments[i].at(-1)) < max_distance * (segments[i].length + segments[j].length) && overlap_value == max_overlap){\n                        let merge_level = normal_merge(levels[i], error[i], levels[i + 1], error[i + 1]);\n\n                        levels[i] = merge_level.nl\n                        error[i] = merge_level.ne\n                        let nlh = likelihoods[i].map((l_value, l_idx) => { return l_value * likelihoods[i+1][l_idx]})\n                        let nlh_sum = nlh.reduce((a, c_value) => {return a + c_value});\n                        likelihoods[i] = nlh.map(function(item) { return item/nlh_sum } )\n\n                        \n                        segments[i].push(...segments[i+1])\n                        segments[i] = segments[i].sort((a,b) => a-b)\n\n                        levels.splice(j, 1)\n                        error.splice(j, 1)\n                        segments.splice(j, 1)\n                        likelihoods.splice(j, 1)\n                        \n                        if(j >= segments.length){\n                            i += 1\n                            j = i + 1\n                        }\n\n                    }else{\n                        j += 1\n                        if(j >= segments.length){\n                            i += 1\n                            j = i + 1\n                        }\n                    }\n                }\n                iter_count = iter_count + 1\n                if(ons == segments.length){\n                    break\n                }\n                ons = segments.length\n            }\n            // console.log('final segments', segments)\n            \n            segments.forEach((seg_value, seg_idx) => {\n                let baf_info = likelihood_baf_pval(likelihoods[seg_idx])\n                if(seg_value.length > 1){\n                    let q0 = 0\n                    let srdp = 0\n                    let homs = 0\n                    let hets = 0\n\n                    seg_value.forEach((bin, bin_idx) =>{\n                        gstat_rd_all.push(wig[bin])\n                        if(baf_info.mean <= baf_threshold){\n                            gstat_rd0.push(wig[bin])\n                        }\n                        wig[bin].segment_score = levels[seg_idx]\n                    });\n                    gstat_rd.push(levels[seg_idx])\n                    gstat_error.push(error[seg_idx])\n                    gstat_baf.push(baf_info.mean)\n                    gstat_lh.push(likelihoods[seg_idx])\n\n                }\n\n            });\n\n            continue\n        }\n        \n        // Third stage for call\n        \n        // let data = gstat_rd0.lengthn == 0 ?  gstat_rd_all: gstat_rd0 ;\n        \n        let points = parseInt(1000 * (1 - min_cell_fraction))\n        if(points == 0){\n            points = 1\n        }\n        let x = g_utils.linspace(min_cell_fraction, 1, points)\n        let master_lh = {}\n        let germline_lh = {}\n        for(let cn=10; cn > -1; cn--){\n            for(let h1=0; h1 < (cn/2+1); h1++){\n                let h2 = cn - h1\n                let mrd = x.map((v, idx) => {return 1-v +v*cn/2})\n                let g_mrd = cn / 2\n                let g_mbaf;\n                let mbaf;\n                if(cn > 0){\n                    g_mbaf = 0.5 - (h1 / (h1 + h2))\n                    mbaf = x.map((v, idx) => {return 0.5 - (1 - v + v * h1) / (2 - 2 * v + (h1 + h2) * v)})\n                   \n                }else{\n                    g_mbaf = 0\n                    mbaf =  x.map((v, idx) => {return 0*v})\n                }\n                \n                for( let ei=0; ei < gstat_rd.length; ei++){\n                        \n                    let g_lh = normal(g_mrd * this.globalMean, 1, gstat_rd[ei], gstat_error[ei]) * likelihood_of_baf(gstat_lh[ei], 0.5 + g_mbaf)\n                    if(ei in germline_lh){\n                        germline_lh[ei].push([cn, h1, h2, g_lh, 1.0])\n                    }else{\n                        germline_lh[ei] = [cn, h1, h2, g_lh, 1.0]\n                    }\n                    let slh = 0\n                    let max_lh = 0\n                    let max_x = 0\n                    mrd.forEach((mi, idx) => {\n                        if(!isNaN(mbaf[idx])){\n                            let tmpl = normal(mi * this.globalMean, 1, gstat_rd[ei], gstat_error[ei]) * likelihood_of_baf(gstat_lh[ei], 0.5 + mbaf[idx])\n                            slh += tmpl\n                            if(tmpl > max_lh){\n                                max_lh = tmpl\n                                max_x = x[idx]\n                            }\n                        }\n                    });\n                    if(ei in master_lh){\n                        master_lh[ei].push([cn, h1, h2, slh / x.length, max_x])\n                    }else{\n                        master_lh[ei] = [cn, h1, h2, slh / x.length, max_x]\n                    }\n                }\n                \n                for( let ei=0; ei < gstat_rd.length; ei++){\n                    if(event_type == \"germline\"){\n                        master_lh[ei].sort((a, b) => a[3] - b[3]);\n                    }\n                    else{\n                        master_lh[ei].sort((a, b) => a[3] - b[3]);\n                        if(event_type == \"both\"){\n                            \n                            germline_lh[ei].sort((a, b) => a[3] - b[3]);\n                            if(germline_lh[ei][0][3] > master_lh[ei][0][3]){\n                                //let tmp_list = list(filter( lambda x: x[0] != germline_lh[ei][0][0] and x[1] != germline_lh[ei][0][1], master_lh[ei]))\n                                let tmp_list = master_lh[ei].filter((x) => (x[0] != germline_lh[ei][0][0]) && (x[1] <= germline_lh[ei][0][1]))\n                                // console.log('tmp_list', tmp_list)\n                                // master_lh[ei] = [germline_lh[ei][0]] + tmp_list\n                                master_lh[ei] = [germline_lh[ei][0]].push(...tmp_list)\n                            }\n                        }\n                    }\n                }\n                let chr_calls;\n                for( let ei=0; ei < gstat_rd.length; ei++){\n                    let etype = \"cnnloh\"\n                    let netype = 0\n                    if(master_lh[ei][0][0] > 2){\n                        etype = \"duplication\"\n                        netype = 1\n                    }\n                    if(master_lh[ei][0][0] < 2){\n                        etype = \"deletion\"\n                        netype = -1\n                    }\n                    let cnv = gstat_rd[ei] / this.globalMean;\n                    let rd_pval = t_dist.t_test_1_sample(this.globalMean, gstat_rd[ei], gstat_error[ei], gstat_n[ei])\n\n                    // let pval = rd_pval * gstat_event[ei][\"baf_pval\"];\n                    let lh_del = 0\n                    let lh_loh = 0\n                    let lh_dup = 0\n                    // console.log(etype)\n\n                }\n                \n\n                // break\n            }\n            \n        }\n        \n        var rawbinScore = this.formatDataStructure(this.wigFeatures, 'binScore', this.globalMean)\n        var callScore = this.formatDataStructure(this.wigFeatures, 'segment_score', this.globalMean)\n        \n        return {binScore: rawbinScore, segment_score: callScore}\n        \n    }\n\n    formatDataStructure(wigFeatures, feature_column, scaling_factor = 1) {\n        const results = []\n        for (const [chr, wig] of Object.entries(wigFeatures)) {\n\n            wig.forEach(sample => {\n                var new_sample = { ...sample }\n                if (scaling_factor != 1) {\n                    new_sample.value = sample[feature_column] / scaling_factor * 2\n                }\n                results.push(new_sample)\n            })\n        }\n\n        return results\n    }\n\n    formatDataStructure_BAF(feature_column, scaling_factor = 2) {\n        const baf1 = []\n        const baf2 = []\n        for (const [chr, wig] of Object.entries(this.wigFeatures)) {\n\n            wig.forEach(sample => {\n                \n                var baf1_value = { ...sample }\n                var baf2_value = { ...sample }\n                \n                let value = sample[feature_column]\n                if (value != 0.5){\n                    baf2_value.value = -2 * (1 - value)\n                    baf2.push(baf2_value)\n                }\n                baf1_value.value = -2 * value\n                baf1.push(baf1_value)\n                    \n            })\n        }\n        \n\n        return [baf1, baf2]\n    }\n}\n\nfunction arrayMax(arr) {\n    return arr.reduce(function (p, v) {\n      return ( p > v ? p : v );\n    });\n  }\n\n/**\n * Normal distribution.\n * \n * @param {float} x - Variable.\n * @param {float} a - area\n * @param {float} x0 -  Mean value\n * @param {float} sigma - Sigma\n * @returns {float} - Value of distribution in x.\n */\nfunction normal(x, a, x0, sigma){\n  \n  return a * Math.exp(-1* (x - x0) ** 2 / (2 * sigma ** 2)) / Math.sqrt(2 * Math.PI) / sigma\n\n}\n\n/**\n *  Calculates two normal distributions overlap area.\n * \n * @param {float} m1 - Mean value of the first distribution\n * @param {float} s1 - Sigma of the first distribution\n * @param {float} m2 - Mean value for second distribution\n * @param {float} s2 - Sigma of the second distribution\n * \n * @returns {float} area - Area of overlap\n */\nfunction normal_overlap_approx(m1, s1, m2, s2){\n   \n    return Math.exp(-1* (m1-m2)**2/ (s1**2+s2**2))\n}\n\n\n/**\n * Returns overlap area of two likelihood functions.\n * \n * @param {*} lk1 - First likelihood function.\n * @param {*} lk2 - Second likelihood function.\n * \n * @returns {float}  - Overlap area.\n */\nfunction likelihood_overlap(likelihood_1, likelihood_2){\n    let sum;\n    try{\n        sum = likelihood_1.reduce((accumulator, currentValue, currentIndex) => {return accumulator + Math.min(currentValue, likelihood_2[currentIndex])});\n    }catch{\n        console.log(\"Failed to find likelihood overlap: \", likelihood_1, likelihood_2)\n        return 0\n    }\n\n    return sum\n}\n\n/**\n * Calculates normal distribution that is product of two given normal distributions.\n * \n * @param {float} m1 - Mean value of the first distribution\n * @param {float} s1 - Sigma of the first distribution\n * @param {float} m2 - Mean value for second distribution\n * @param {float} s2 - Sigma of the second distribution\n * @returns {Object} An object representing the first distribution\n * @property {float} nl - Mean value of the first distribution\n * @property {float} ne - Sigma of the first distribution\n */\nfunction normal_merge(m1, s1, m2, s2){\n   \n    if((s1 == 0) && (s2 == 0)){\n        return {nl: 0.5 * (m1 + m2), ne: 0}\n    }\n    else{\n        return {nl: (m1 * s2 * s2 + m2 * s1 * s1) / (s1 * s1 + s2 * s2), ne: Math.sqrt(s1 * s1 * s2 * s2 / (s1 * s1 + s2 * s2))}\n    }\n}\n\n/**\n * Calculates likelihood for given baf\n * @param {*} likelihood \n * @param {*} baf \n * @returns {float}  likelihood value\n */\nfunction likelihood_of_baf(likelihood, baf){\n   \n    let bin = parseInt(baf * (likelihood.length - 1))\n    let fr = baf * (likelihood.length - 1) - bin\n    if(bin < likelihood.length - 1){\n        return likelihood[bin] * (1 - fr) + likelihood[bin + 1] * fr\n    }\n    else{\n        return likelihood[bin]\n    }\n}\n\n/**\n * \n * Calculates baf level and p-value for given likelihood function.\n * \n * @param {*} likelihood \n * @returns {Object} An object representing BAF\n * @property {float} mean  BAF level (difference from 1/2)\n * @property {float} p  p-value for event different than 1/2\n */\nfunction likelihood_baf_pval(likelihood) {\n    const res = likelihood.length;\n    const max_lh = Math.max(...likelihood);\n    let ix = likelihood.indexOf(max_lh);\n    if (ix > Math.floor(res / 2)) {\n      ix = res - 1 - ix;\n    }\n    const b = (res / 2 - ix) / (res + 1);\n  \n    const ix1 = Math.floor((res / 2 + ix) / 2);\n    const ix2 = res - 1 - ix1;\n    let p = likelihood.slice(ix1, ix2 + 1).reduce((acc, val) => acc + val, 0) / likelihood.reduce((acc, val) => acc + val, 0);\n    if (ix === Math.floor(res / 2)) {\n      p = 1.0;\n    }\n    return {mean:b, p:p};\n  }\n\n  export default {CombinedCaller}","\nimport g_utils from './GeneralUtil.js'\nimport t_dist from './t_dist.js'\n\n\nfunction erf(x) {\n    var m = 1.0, s = 1.0, sum = x * 1.0;\n    for (var i = 1; i < 50; i++) {\n        m *= i;\n        s *= -1;\n        sum += (s * Math.pow(x, 2.0 * i + 1.0)) / (m * (2.0 * i + 1.0));\n    }\n    return (2 * sum) / Math.sqrt(3.14159265358979)\n}\n\nfunction getEValue(mean, sigma, rd, start, end) {\n    var arr = new DataStat(rd.slice(start, end));\n    if (arr.std == 0) {\n        if (sigma > 0) { arr.std = (sigma * arr.mean) / mean }\n        else { arr.std = 1 }\n    }\n    var p_val = t_test_1_sample(mean, arr.mean, arr.std, end - start) / (end - start)\n    return p_val\n}\n\nfunction gaussianEValue(mean, sigma, rd, start, end) {\n    var arr = new DataStat(rd.slice(start, end))\n\n    if (arr.mean < mean) {\n        var x = (arr.max - arr.mean) / (sigma * Math.sqrt(2))\n        return Math.pow(0.5 * (1 + erf(x)), end - start)\n    }\n    var x = (arr.min - arr.mean) / (sigma * Math.sqrt(2))\n    return Math.pow(0.5 * (1 - erf(x)), end - start)\n}\n\nfunction adjustToEvalue(mean, sigma, rd, start, end, pval, max_steps = 1000) {\n    var val = getEValue(mean, sigma, rd, start, end)\n    var step = 0, done = false\n    while ((val > pval) & !done & (step < max_steps)) {\n        done = true\n        step += 1\n        var [v1, v2, v3, v4] = [1e10, 1e10, 1e10, 1e10];\n        if (start > 0) v1 = getEValue(mean, sigma, rd, start - 1, end);\n        if (end - start > 2) {\n            var v2 = getEValue(mean, sigma, rd, start + 1, end)\n            var v3 = getEValue(mean, sigma, rd, start, end - 1)\n        }\n        if (end < rd.length) { var v4 = getEValue(mean, sigma, rd, start, end + 1) }\n        if (Math.min[(v1, v2, v3, v4)] < val) {\n            done = false\n            if (v1 == Math.min[(v1, v2, v3, v4)]) {\n                start -= 1;\n                val = v1;\n            }\n            elif(v2 == Math.min[(v1, v2, v3, v4)]); {\n                start += 1;\n                val = v2;\n            }\n            elif(v3 == Math.min[(v1, v2, v3, v4)]); {\n                end -= 1;\n                val = v3;\n            }\n            elif(v4 == Math.min[(v1, v2, v3, v4)]); {\n                end += 1;\n                val = v4;\n            }\n        }\n    }\n    if (val <= pval) { return start, end }\n    return 0;\n}\n\nclass DataStat {\n    constructor(data_array) {\n        this.data = data_array\n        this.mean = data_array.reduce((acc, n) => acc + n) / data_array.length\n        this.std = Math.sqrt(data_array.reduce((acc, n) => (n - this.mean) ** 2) / data_array.length)\n    }\n}\n\nfunction t_test_1_sample(mean, m, s, n) {\n    if (s == 0) s = 1;\n    var t = ((mean - m) / s) * Math.sqrt(n)\n    var p = 1.0 - t_dist.TdistributionCDF(Math.abs(t), (n - 1))\n    return p\n}\n\nfunction t_test_2_samples(m1, s1, n1, m2, s2, n2) {\n    if (s1 == 0) s1 = 1;\n    if (s2 == 0) s2 = 1;\n    var t = (m1 - m2) / Math.sqrt(s1 ** 2 / n1 + s2 ** 2 / n2);\n    var df = ((s1 ** 2 / n1 + s2 ** 2 / n2) ** 2 * (n1 - 1) * (n2 - 1)) /\n        ((s1 ** 4 * (n2 - 1)) / n1 ** 2 + (s2 ** 4 * (n1 - 1)) / n2 ** 2);\n\n    var p = 1.0 - t_dist.TdistributionCDF(Math.abs(t), parseInt(df + 0.5))\n\n    return p\n}\n\nexport class Partition {\n\n    constructor(rd, mean, std) {\n        this.rd = rd\n        this.mean = mean\n        this.std = std\n        this.bin_bands = [2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56, 64, 80, 96, 112, 128]\n    }\n\n    get_rd_signal_bandwidth(data_array) {\n        var new_array = []\n\n        data_array.forEach((value, index) => {\n            var tmp_value = 0;\n            if (value > this.mean / 4) {\n                tmp_value = this.mean / (this.std ** 2 * value);\n            } else {\n                tmp_value = 4 / this.std ** 2;\n            }\n            new_array.push(tmp_value)\n        })\n        return new_array\n    }\n\n    meanShiftCaller(repeats = 3) {\n        var ChrLevels = {}\n        \n        Object.entries(this.rd).forEach(([chr, chr_rd]) => {\n            var masked = new Array(chr_rd.length).fill(false)\n\n            // set the level\n            var levels = new Array(chr_rd.length)\n\n            for (let b = 0; b < chr_rd.length; b++) {\n                if (!masked[b]) { levels[b] = chr_rd[b]; }\n            }\n\n            this.bin_bands.forEach((bin_band, bin_band_index) => {\n                // not masked levels at current bin\n                // get boolean values\n                var not_masked = masked.map((value, index) => { return !value; })\n\n                // not masked level at current bin\n                var nm_levels = []\n\n                Object.entries(chr_rd).forEach(([k, v]) => { nm_levels.push(v.binScore) })\n                \n                // set the mask border\n                var mask_borders = [0]\n                var count = 0\n\n                for (let i = 0; i < masked.length; i++) {\n                    if (masked[i]) {\n                        if (count > 0) {\n                            mask_borders.push(mask_borders[mask_borders.length - 1] + count - 1)\n                            count = 0;\n                        }\n                    } else { count += 1 }\n                }\n\n                mask_borders.shift()\n\n                // repeating steps\n                for (let step = 0; step < repeats; step++) {\n                    var isig = this.get_rd_signal_bandwidth(nm_levels)\n                    var grad = new Array(nm_levels.length).fill(0);\n\n                    for (let i = 0; i < nm_levels.length; i++) {\n                        for (let j = i - 3 * bin_band; j <= i + 3 * bin_band + 1; j++) {\n                            if (j < 0 || j >= nm_levels.length) continue;\n                            if (Math.abs(i - j) >= nm_levels.length) continue;\n\n                            var g_value = (j - i) * Math.exp((-0.5 * (j - i) ** 2) / bin_band ** 2) *\n                                Math.exp(-0.5 * (nm_levels[i] - nm_levels[j]) ** 2 * isig[i]);\n\n                            grad[i] += g_value\n                        }\n                    }\n                    \n                    // get the border\n                    var border = new Array();\n                    for (var i = 0; i < grad.length - 1; i++) {\n                        if ((grad[i] < 0) & (grad[i + 1] >= 0)) border.push(i);\n                    }\n\n                    border.push(grad.length - 1)\n                    border = border.concat(mask_borders).sort((a, b) => a - b)\n                    border = Array.from(new Set(border))\n\n                    var pb = 0;\n                    for (var i = 0; i < border.length; i++) {\n                        var range_array = nm_levels.slice(pb, border[i] + 1)\n                        var range_mean = range_array.reduce((acc, n) => acc + n) / range_array.length\n\n                        nm_levels.fill(range_mean, pb, border[i] + 1)\n                        pb = border[i] + 1\n                    }\n                }\n\n                for (var i = 0, j = 0; i < levels.length; i++) {\n                    if (not_masked[i]) {\n                        levels[i] = nm_levels[j]\n                        j++\n                    }\n                }\n\n                //get the border\n                var border = new Array();\n                for (var i = 0; i < levels.length - 1; i++) {\n                    //if(i == levels.length -1) continue;\n                    var diff = Math.abs(levels[i + 1] - levels[i]);\n\n                    if (diff > 0.01) border.push(i + 1);\n                }\n\n                border.unshift(0);\n                border.push(levels.length);\n\n                // reset the mask\n                masked = new Array(this.rd.length).fill(false);\n\n                // check the borders\n                for (var i = 1; i < border.length; i++) {\n                    var seg = [border[i - 1], border[i]]\n                    var seg_left = [border[i - 1], border[i - 1]]\n                    if (i > 1) { seg_left[0] = border[i - 2] } else continue;\n\n                    var seg_right = [border[i], border[i]];\n                    if (i < border.length - 1) { seg_right[1] = border[i + 1] } else continue;\n\n                    var n = seg[1] - seg[0];\n                    var n_left = seg_left[1] - seg_left[0];\n                    var n_right = seg_right[1] - seg_right[0];\n                    if (n <= 1) continue;\n                    var seg_array = new DataStat(levels.slice(seg[0], seg[1]));\n\n                    if (n_right <= 15 || n_left <= 15 || n <= 15) {\n                        var ns = 1.8 * Math.sqrt(levels[seg_left[0]] / this.mean) * this.std;\n                        if (Math.abs(levels[seg_left[0]] - levels[seg[0]]) < ns) { continue }\n\n                        ns = 1.8 * Math.sqrt(levels[seg_right[0]] / this.mean) * this.std;\n                        if (Math.abs(levels[seg_right[0]] - levels[seg[0]]) < ns) { continue }\n                    } else {\n                        var seg_left_array = levels.slice(seg_left[0], seg_left[1])\n                        var seg_left_1 = new DataStat(seg_left_array);\n\n                        var seg_right_array = levels.slice(seg_right[0], seg_right[1])\n                        var seg_right_1 = new DataStat(seg_right_array);\n\n                        var ttest_2sample_1 = t_test_2_samples(seg_array.mean, seg_array.std, seg_array.data.length,\n                            seg_left_1.mean, seg_left_1.std, seg_left_1.data.length);\n                        if (ttest_2sample_1 > (0.01 / genome_size) * bin_size * (n + n_left)) { continue }\n\n                        var ttest_2sample_2 = t_test_2_samples(seg_array.mean, seg_array.std, seg_array.data.length,\n                            seg_right_1.mean, seg_right_1.std, seg_right_1.data.length);\n                        if (ttest_2sample_2 > (0.01 / genome_size) * bin_size * (n + n_right)) { continue }\n                    }\n\n                    var ttest_1sample_1 = t_test_1_sample(this.mean, seg_array.mean, seg_array.std, seg_array.data.length)\n                    if (ttest_1sample_1 > 0.05) { continue }\n                    let segments_rd = nm_levels.slice(seg[0], seg[1])\n                    var raw_seg_data = new DataStat(segments_rd);\n\n                    masked.fill(true, seg[0], seg[1]);\n                    levels.fill(raw_seg_data.mean, seg[0], seg[1]);\n                }\n            });\n\n            ChrLevels[chr] = levels\n\n        });\n        return ChrLevels\n    }\n    call_mean_shift(repeats = 3) {\n        const bin_size = 1000;\n        // const genome_size = bin_size * this.rd.length;\n        const genome_size = 2871000000;\n        var masked = new Array(this.rd.length).fill(false);\n\n        // set the level\n        var levels = new Array(this.rd.length);\n        for (var b = 0; b < this.rd.length; b++) {\n            if (!masked[b]) {\n                levels[b] = this.rd[b];\n            }\n        }\n        this.bin_bands.forEach((bin_band, bin_band_index) => {\n            // not masked levels at current bin\n            // get boolean values\n            var not_masked = masked.map((value, index) => {\n                return !value;\n            });\n\n            // not masked level at current bin\n            // var nm_levels = not_masked.map((value, index) => {if(value) return this.rd[index]});\n            var nm_levels = [];\n            not_masked.forEach((value, index) => {\n                if (value) nm_levels.push(this.rd[index]);\n            });\n\n            // console.log(bin_band, nm_levels);\n\n            // set the mask border\n            var mask_borders = [0];\n            var count = 0;\n\n            for (var i = 0; i < masked.length; i++) {\n                if (masked[i]) {\n                    if (count > 0) {\n                        mask_borders.push(\n                            mask_borders[mask_borders.length - 1] + count - 1,\n                        );\n                        count = 0;\n                    }\n                } else {\n                    count += 1;\n                }\n            }\n\n            mask_borders.shift();\n            // repeating steps\n            for (var step = 0; step < repeats; step++) {\n                var isig = this.get_rd_signal_bandwidth(nm_levels);\n                // console.log(isig);\n                var grad = new Array(nm_levels.length).fill(0);\n\n                for (var i = 0; i < nm_levels.length; i++) {\n                    for (var j = i - 3 * bin_band; j <= i + 3 * bin_band + 1; j++) {\n                        if (j < 0 || j >= nm_levels.length) continue;\n                        if (Math.abs(i - j) >= nm_levels.length) continue;\n\n                        var g_value =\n                            (j - i) *\n                            Math.exp((-0.5 * (j - i) ** 2) / bin_band ** 2) *\n                            Math.exp(-0.5 * (nm_levels[i] - nm_levels[j]) ** 2 * isig[i]);\n                        // console.log(g_value);\n                        grad[i] += g_value;\n                    }\n                }\n                // console.log(grad);\n\n                // get the border\n                var border = new Array();\n                for (var i = 0; i < grad.length - 1; i++) {\n                    if ((grad[i] < 0) & (grad[i + 1] >= 0)) border.push(i);\n                }\n\n                border.push(grad.length - 1);\n                border = border.concat(mask_borders).sort((a, b) => a - b);\n                border = Array.from(new Set(border));\n\n                var pb = 0;\n                for (var i = 0; i < border.length; i++) {\n                    var range_array = nm_levels.slice(pb, border[i] + 1);\n                    var range_mean =\n                        range_array.reduce((acc, n) => acc + n) / range_array.length;\n\n                    nm_levels.fill(range_mean, pb, border[i] + 1);\n                    pb = border[i] + 1;\n                }\n            }\n\n            for (var i = 0, j = 0; i < levels.length; i++) {\n                if (not_masked[i]) {\n                    levels[i] = nm_levels[j];\n                    j++;\n                }\n            }\n\n            //get the border\n            var border = new Array();\n            for (var i = 0; i < levels.length - 1; i++) {\n                //if(i == levels.length -1) continue;\n                var diff = Math.abs(levels[i + 1] - levels[i]);\n\n                if (diff > 0.01) border.push(i + 1);\n            }\n\n            border.unshift(0);\n            border.push(levels.length);\n\n            // reset the mask\n            masked = new Array(this.rd.length).fill(false);\n\n            // check the borders\n            for (var i = 1; i < border.length; i++) {\n                var seg = [border[i - 1], border[i]];\n                var seg_left = [border[i - 1], border[i - 1]];\n                if (i > 1) {\n                    seg_left[0] = border[i - 2];\n                } else continue;\n\n                var seg_right = [border[i], border[i]];\n                if (i < border.length - 1) {\n                    seg_right[1] = border[i + 1];\n                } else continue;\n\n                var n = seg[1] - seg[0];\n                var n_left = seg_left[1] - seg_left[0];\n                var n_right = seg_right[1] - seg_right[0];\n                if (n <= 1) continue;\n                var seg_array = new DataStat(levels.slice(seg[0], seg[1]));\n\n                if (n_right <= 15 || n_left <= 15 || n <= 15) {\n                    var ns = 1.8 * Math.sqrt(levels[seg_left[0]] / this.mean) * this.std;\n                    if (Math.abs(levels[seg_left[0]] - levels[seg[0]]) < ns) {\n                        continue;\n                    }\n\n                    ns = 1.8 * Math.sqrt(levels[seg_right[0]] / this.mean) * this.std;\n                    if (Math.abs(levels[seg_right[0]] - levels[seg[0]]) < ns) {\n                        continue;\n                    }\n                } else {\n                    var seg_left_array = levels.slice(seg_left[0], seg_left[1]);\n                    var seg_left_1 = new DataStat(seg_left_array);\n\n                    var seg_right_array = levels.slice(seg_right[0], seg_right[1]);\n                    var seg_right_1 = new DataStat(seg_right_array);\n\n                    var ttest_2sample_1 = t_test_2_samples(\n                        seg_array.mean,\n                        seg_array.std,\n                        seg_array.data.length,\n                        seg_left_1.mean,\n                        seg_left_1.std,\n                        seg_left_1.data.length,\n                    );\n                    if (\n                        ttest_2sample_1 >\n                        (0.01 / genome_size) * bin_size * (n + n_left)\n                    ) {\n                        continue;\n                    }\n\n                    var ttest_2sample_2 = t_test_2_samples(\n                        seg_array.mean,\n                        seg_array.std,\n                        seg_array.data.length,\n                        seg_right_1.mean,\n                        seg_right_1.std,\n                        seg_right_1.data.length,\n                    );\n                    if (\n                        ttest_2sample_2 >\n                        (0.01 / genome_size) * bin_size * (n + n_right)\n                    ) {\n                        continue;\n                    }\n                }\n\n                var ttest_1sample_1 = t_test_1_sample(\n                    this.mean,\n                    seg_array.mean,\n                    seg_array.std,\n                    seg_array.data.length,\n                );\n                if (ttest_1sample_1 > 0.05) {\n                    continue;\n                }\n                var raw_seg_data = new DataStat(this.rd.slice(seg[0], seg[1]));\n\n                masked.fill(true, seg[0], seg[1]);\n                levels.fill(raw_seg_data.mean, seg[0], seg[1]);\n            }\n        });\n        return levels;\n    }\n\n    cnv_calling(bin_size = 100000) {\n        var delta = 0.25\n        var delta = delta * this.mean\n\n        var min = this.mean - delta, max = this.mean + delta;\n        // console.log('min: ', min, ', Max: ', max)\n\n        // console.log('delta', delta)\n        var normal_genome_size = 2971000000\n\n        var levels = this.meanShiftCaller()\n\n        \n        var merged_level = {}\n        var cnv_levels = []\n        // var t_value = cdf(Math.abs(10), (5)) \n        // console.log('Testing student t test:', t_value)\n\n        Object.entries(levels).forEach(([chr, chr_levels]) => {\n            \n            var done = false\n            while (!done) {\n                done = true\n\n                //\n                // get the borders\n                //\n                var borders = new Array(1).fill(0);\n                for (let i = 0; i < chr_levels.length - 1; i++) {\n                    var diff = Math.abs(chr_levels[i + 1] - chr_levels[i]);\n                    if (diff > 0.01) borders.push(i + 1);\n                }\n                borders.push(chr_levels.length);\n\n                for (let ix = 0; ix < borders.length - 2; ix++) {\n                    var v1 = Math.abs(chr_levels[borders[ix]] - chr_levels[borders[ix + 1]])\n                    // console.log(ix, v1);\n                    if (v1 < delta) {\n                        var v2 = v1 + 1, v3 = v1 + 1;\n\n                        if (ix > 0) { v2 = Math.abs(chr_levels[borders[ix]] - chr_levels[borders[ix - 1]]) }\n                        if (ix < borders.length - 3) { v3 = Math.abs(levels[borders[ix + 1]] - chr_levels[borders[ix + 2]]) }\n\n                        if (v1 < v2 && v1 < v3) {\n                            done = false\n\n                            var tmp_array = new DataStat(chr_levels.slice(borders[ix], borders[ix + 2]))\n                            chr_levels.fill(tmp_array.mean, borders[ix], borders[ix + 2]);\n                            borders.splice(ix + 1, ix + 1);\n                        }\n                    }\n                }\n            }\n            // console.log('updated levels', chr_levels)\n\n            // var chr_rd = this.rd[chr]\n            var chr_rd = []\n            Object.entries(this.rd[chr]).forEach(([bin, binDict]) => { chr_rd.push(binDict.binScore) });\n            // console.log('cnv_calling', chr_rd)\n\n            //\n            // Calling Segments\n            //\n\n            //var flags = [\"\"] * levels.length;\n            var flags = new Array(chr_levels.length).fill(\"\")\n            var segments = []\n\n            // console.log('default levels', chr, chr_levels)\n            var b = 0\n            var pval = (0.05 * bin_size) / normal_genome_size\n            while (b < chr_levels.length) {\n                var b0 = b, border_start = b;\n                while ((b < chr_levels.length) & (chr_levels[b] < min)) {\n                    b += 1\n                }\n                var border_end = b\n\n                if (border_end > border_start + 1) {\n                    // console.log('border min', border_start, border_end)\n                    var adj = adjustToEvalue(this.mean, this.std, chr_rd, border_start, border_end, pval)\n                    // console.log(adj)\n                    if (adj) {\n                        var border_start, border_end = adj;\n                        segments.push([border_start, border_end + 1])\n                        flags.fill(\"D\", border_start, border_end)\n                    }\n                }\n                border_start = b;\n                while ((b < chr_levels.length) & (chr_levels[b] > max)) { b += 1 }\n                border_end = b\n\n                if (border_end > border_start + 1) {\n                    adj = adjustToEvalue(this.mean, this.std, chr_rd, border_start, border_end, pval)\n                    // console.log(adj)\n                    if (adj) {\n                        border_start, (border_end = adj);\n                        segments.push([border_start, border_end, +1]);\n                        // flags[bs:be] = [\"A\"] * (be - bs)\n                        flags.fill(\"A\", border_start, border_end);\n                    }\n                }\n                if (b == b0) b += 1;\n            }\n\n            //console.log(chr, 'segments', segments)\n            //\n            //  Calling additional deletions\n            //\n            b = 0;\n            while (b < chr_levels.length) {\n                while ((b < chr_levels.length) & (flags[b] != \"\")) b += 1;\n                border_start = b;\n                while ((b < chr_levels.length) & (chr_levels[b] < min)) b += 1;\n                border_end = b;\n                if (border_end > border_start + 1) {\n                    if (gaussianEValue(this.mean, this.std, chr_rd, border_start, border_end) < 0.05 / normal_genome_size) {\n                        segments.push([border_start, border_end, -1])\n                        flags.fill([\"d\"] * (border_end - border_start), border_start, border_end)\n                    }\n                    b -= 1;\n                }\n                b += 1;\n            }\n\n            b = 0;\n            var cf;\n            if (b < chr_levels.length) cf = flags[b];\n\n            border_start = 0;\n\n            //var merge = [...this.rd]\n            var merge = [...chr_rd]\n            // console.log('initial merge', merge)\n            while (b < chr_levels.length) {\n                while (flags[b] == cf) {\n                    b += 1;\n                    if (b >= flags.length) break;\n                }\n                if (b > border_start) {\n                    var merge_arr = new DataStat(merge.slice(border_start, b));\n                    merge.fill(merge_arr.mean, border_start, b);\n                }\n                if (b < chr_levels.length) cf = flags[b];\n                border_start = b;\n            }\n\n            merged_level[chr] = merge\n\n\n            //\n            // calculate calls\n            // \n            b = 0\n            while (b < chr_levels.length) {\n                cf = flags[b]\n                if (cf == \"\") {\n                    b += 1\n                    continue\n                }\n                border_start = b\n                while (b < chr_levels.length & cf == flags[b]) { b += 1 }\n                var border_arr = new DataStat(merge.slice(border_start, b))\n                let cnv = border_arr.mean / this.mean\n                let event_type;\n                if (cf == \"D\") {\n                    event_type = \"deletion\"\n                } else {\n                    event_type = \"duplication\"\n                }\n                let cnv_dict = {\n                    chr: chr,\n                    start: bin_size * border_start + 1,\n                    end: bin_size * b,\n                    size: bin_size * (b - border_start + 1),\n                    value: cnv * 2,\n                    event_type: event_type\n                }\n                cnv_levels.push(cnv_dict)\n\n            }\n        });\n\n        return [merged_level, cnv_levels]\n    }\n}\n\n\n\nexport default { Partition };","import g_utils from './GeneralUtil.js'\nimport combined_caller from './CombinedCaller.js';\nimport read_depth_caller from './MeanShiftUtil.js'\n\n\nfunction getMean(data) {\n    return (data.reduce(function (a, b) { return a + b; }) / data.length);\n}\n\nclass CNVpytorVCF {\n    constructor(allVariants, binSize) {\n        this.allVariants = allVariants\n        this.rowBinSize = 10000\n        this.binSize = binSize\n        this.binFactor = binSize / this.rowBinSize\n\n    }\n\n    async computeDepthFeatures() {\n\n        const chromosomes = Object.keys(this.allVariants)\n        const wigFeatures = []\n\n        for (let chr of chromosomes) {\n            const variants = this.allVariants[chr]\n            if (variants.length === 0) continue\n\n            const firstSnp = variants[0]\n\n            let sum = 0\n            let count = 0\n            let binStart = firstSnp.start = firstSnp.start % this.binSize   // Place start at integer multiple of binSize\n            let binEnd = binStart + this.binSize\n            let featureBin = 0\n\n            for (let snp of variants) {\n                const position = snp.start + 1    // Convert from 0-base to 1-base coords\n                featureBin = Math.max(Math.floor((snp.start - 1) / this.binSize), 0)\n                if (position > binEnd) {\n\n                    if (count > 0) {\n                        wigFeatures.push({ chr, start: binStart, end: binEnd, value: sum, bin: featureBin, count: count })\n                    }\n\n                    // Start new bin\n                    sum = 0\n                    //count = 0\n                    binStart = snp.start - snp.start % this.binSize\n                    binEnd = binStart + this.binSize\n                }\n\n                const dpValue = snp.calls[9].info[\"DP\"]\n                // const dpValue = snp.getInfo(\"DP\")\n\n                if (dpValue) {\n                    sum += Number.parseInt(dpValue)\n                    count++\n                }\n            }\n\n            // final bin\n            if (count > 0) {\n                wigFeatures.push({ chr, start: binStart, end: binEnd, value: sum, bin: featureBin, count: count })\n            }\n        }\n\n        return wigFeatures\n    }\n\n    // for for read depth calculation\n    async computeReadDepth() {\n        const chromosomes = Object.keys(this.allVariants)\n        var wigFeatures = {}\n\n        for (let chr of chromosomes) {\n            const variants = this.allVariants[chr]\n            var featureBin;\n            if (variants.length === 0) continue\n            for (let snp of variants) {\n                featureBin = Math.max(Math.floor(snp.start / this.rowBinSize), 0)\n                if (!wigFeatures[chr]) { wigFeatures[chr] = [] }\n                if (!wigFeatures[chr][featureBin]) {\n\n                    wigFeatures[chr][featureBin] = {\n                        chr,\n                        start: featureBin * this.rowBinSize,\n                        end: (featureBin + 1) * this.rowBinSize,\n                        value: 0,\n                        sum_score: 0,\n                        count: 0,\n                    };\n                }\n                const dpValue = snp.calls[9].info[\"DP\"]\n                if (dpValue) {\n                    // sum += Number.parseInt(dpValue)\n                    wigFeatures[chr][featureBin].sum_score += Number.parseInt(dpValue)\n                    wigFeatures[chr][featureBin].count++\n                }\n\n            }\n            // for last bin\n            //let last_bin = wigFeatures[chr][featureBin]\n            //last_bin.value = parseInt(last_bin.sum_score / last_bin.count) * 100\n        }\n\n        // adjust the bin values to actual bin size\n        var avgbin = {}\n        for (let chr of chromosomes) {\n            if (!avgbin[chr]) { avgbin[chr] = [] }\n            for (let k = 0; k < wigFeatures[chr].length / this.binFactor; k++) {\n                const featureBin = k\n                if (!avgbin[chr][k]) {\n                    avgbin[chr][k] = {\n                        chr,\n                        binScore: 0,\n                        start: featureBin * this.binSize,\n                        end: (featureBin + 1) * this.binSize,\n                    }\n                }\n\n                for (var j = k * 10; j < 10 * k + 10; j++) {\n                    if (wigFeatures[chr][j]) {\n                        var tmp_score = parseInt(wigFeatures[chr][j].sum_score / wigFeatures[chr][j].count) * 100;\n                        avgbin[chr][k].binScore += tmp_score;\n                    }\n                }\n            }\n        }\n\n        var finalFeatureSet = this.readDepthMeanshift(avgbin)\n        return finalFeatureSet\n\n    }\n    readDepthMeanshift(wigFeatures) {\n\n        // Get global mean and standrad deviation\n        var fit_info = new g_utils.GetFit(wigFeatures)\n        var [globamMean, globalStd] = fit_info.fit_data();\n\n        // Apply partition method\n        var partition = new read_depth_caller.Partition(wigFeatures, globamMean, globalStd);\n        var partition_array = partition.meanShiftCaller()\n        var caller_array = partition.cnv_calling()\n\n        // Assign the partition values to each bin\n        Object.entries(wigFeatures).forEach(([chr, chr_rd]) => {\n            chr_rd.forEach((bin, index) => {\n                bin.partition_level = parseInt(partition_array[chr][index])\n                bin.partition_call = parseInt(caller_array[0][chr][index])\n            });\n        })\n\n        var rawbinScore = this.formatDataStructure(wigFeatures, 'binScore', globamMean)\n        var partition_levels = this.formatDataStructure(wigFeatures, 'partition_level', globamMean)\n        var partition_call = this.formatDataStructure(wigFeatures, 'partition_call', globamMean)\n\n        return [rawbinScore, partition_levels, partition_call, caller_array[1]]\n\n    }\n    formatDataStructure(wigFeatures, feature_column, scaling_factor = 1) {\n        const results = []\n        for (const [chr, wig] of Object.entries(wigFeatures)) {\n\n            wig.forEach(sample => {\n                var new_sample = { ...sample }\n                if (scaling_factor != 1) {\n                    new_sample.value = sample[feature_column] / scaling_factor * 2\n                }\n                results.push(new_sample)\n            })\n        }\n\n        return results\n    }\n\n    async computeBAF_v2() {\n\n        const chromosomes = Object.keys(this.allVariants)\n        const wigFeatures = {}\n        const baf1 = [], baf2 = []\n\n        for (let chr of chromosomes) {\n            const variants = this.allVariants[chr]\n            if (variants.length === 0) continue\n            var featureBin;\n            for (let snp of variants) {\n                featureBin = Math.max(Math.floor(snp.start / this.binSize), 0)\n\n                if (!wigFeatures[chr]) {\n                    wigFeatures[chr] = []\n                }\n                if (!wigFeatures[chr][featureBin]) {\n                    if (featureBin > 0) {\n                        // calculating the BAF likelihood for previous bin\n                        let previous_featureBin = featureBin - 1\n                        if (wigFeatures[chr][previous_featureBin]) {\n\n                            const updated_bin = this.get_max_min_score(wigFeatures[chr][previous_featureBin])\n\n                            if (updated_bin.value != 0.5) {\n                                let baf_wig = Object.assign({}, updated_bin);\n                                baf_wig.value = -2 * (1 - updated_bin.value)\n                                baf2.push(baf_wig)\n                            }\n                            updated_bin.value = - 2 * updated_bin.value\n                            wigFeatures[chr][previous_featureBin] = updated_bin\n\n                            baf1.push(wigFeatures[chr][previous_featureBin])\n\n                        }\n                    }\n                    wigFeatures[chr][featureBin] = {\n                        chr,\n                        start: featureBin * this.binSize,\n                        end: (featureBin + 1) * this.binSize,\n                        value: 0,\n                        count: 0,\n                        likelihood_score: [],\n                        min_score: 0,\n                    };\n                }\n                const calls = snp.calls[9]\n                let genotype = calls.genotype\n                let ad_score = calls.info[\"AD\"].split(',')\n                let ad_a = ad_score[0], ad_b = ad_score[1]\n\n                if ((genotype[0] == 0 && genotype[1] == 1) || (genotype[0] == 1 && genotype[1] == 0)) {\n                    //apply the beta function\n                    if (wigFeatures[chr][featureBin].likelihood_score.length == 0) {\n                        wigFeatures[chr][featureBin].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {\n                            return beta(ad_a, ad_b, value);\n                        });\n                    } else {\n                        var sum = 0;\n\n                        wigFeatures[chr][featureBin].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {\n                            var likelihood_value = wigFeatures[chr][featureBin].likelihood_score[index] * beta(ad_a, ad_b, value);\n                            sum = sum + likelihood_value;\n                            return likelihood_value;\n                        });\n\n                        wigFeatures[chr][featureBin].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {\n                            return wigFeatures[chr][featureBin].likelihood_score[index] / sum;\n                        });\n                    }\n                    wigFeatures[chr][featureBin].count++;\n                }\n            }\n\n            // last feature bin\n            const updated_bin = this.get_max_min_score(wigFeatures[chr][featureBin])\n\n            if (updated_bin.value != 0.5) {\n                let baf_wig = Object.assign({}, updated_bin);\n                baf_wig.value = -2 * (1 - updated_bin.value)\n                baf2.push(baf_wig)\n            }\n            updated_bin.value = -2 * updated_bin.value\n            wigFeatures[chr][featureBin] = updated_bin\n            baf1.push(wigFeatures[chr][featureBin])\n        }\n\n        return [baf1, baf2]\n\n    }\n\n\n    format_BAF_likelihood(wigFeatures) {\n        const results = []\n\n        for (const [chr, wig] of Object.entries(wigFeatures)) {\n            wig.forEach(sample => {\n                var new_sample = { ...sample }\n                if (sample.value != 0.5) {\n                    new_sample.value = 1 - sample.value\n                    results.push(new_sample)\n                }\n            })\n        }\n        return results\n    }\n\n    get_max_min_score(sample) {\n\n        if (sample.likelihood_score.length > 0) {\n            const max = Math.max(...sample.likelihood_score);\n            const res = sample.likelihood_score.indexOf(max);\n            sample.value = Math.max(res / 100, 1 - res / 100);\n            sample.min_score = Math.min(res / 100, 1 - res / 100);\n\n        } else {\n            sample.score = 0;\n        }\n\n        return sample\n    }\n\n    async getAllbins() {\n        const bins = await this.computeDepthFeatures()\n\n        //console.log('getAllbins', bins[\"value\"])\n\n        const fitter = new g_utils.GetFit(bins)\n\n        const distParams = fitter.fit_data()\n        //  dconsole.log('rd list', distParams)\n\n        return bins\n    }\n\n    async read_rd_baf(caller='ReadDepth'){\n        \n        const chromosomes = Object.keys(this.allVariants)\n        var wigFeatures = {}\n\n        for (let chr of chromosomes) {\n            const variants = this.allVariants[chr]\n            var featureBin;\n            if (variants.length === 0) continue\n            for (let snp of variants) {\n                featureBin = Math.max(Math.floor(snp.start / this.rowBinSize), 0)\n                if (!wigFeatures[chr]) { wigFeatures[chr] = [] }\n                if (!wigFeatures[chr][featureBin]) {\n\n                    wigFeatures[chr][featureBin] = {\n                        chr,\n                        start: featureBin * this.rowBinSize,\n                        end: (featureBin + 1) * this.rowBinSize,\n                        // value: 0,\n                        dp_sum_score: 0,\n                        dp_count: 0,\n                        hets_count:0,\n                        hets: [],\n                        //likelihood_score: [],\n                    };\n                }\n                const calls = snp.calls[9]\n                const dpValue = calls.info[\"DP\"]\n                if (dpValue) {\n                    \n                    wigFeatures[chr][featureBin].dp_sum_score += Number.parseInt(dpValue)\n                    wigFeatures[chr][featureBin].dp_count++\n                }\n                \n                let ad_score = calls.info[\"AD\"].split(',')\n                let genotype = calls.genotype\n                if ((genotype[0] == 0 && genotype[1] == 1) || (genotype[0] == 1 && genotype[1] == 0)) {\n                    //apply the beta function\n                    wigFeatures[chr][featureBin].hets_count++;\n                    let ad_a = parseInt(ad_score[0]), ad_b = parseInt(ad_score[1])\n                    wigFeatures[chr][featureBin].hets.push({ref:ad_a, alt:ad_b})\n                }\n           \n            }\n        \n        }\n    \n        var avgbin = this.adjust_bin_size(wigFeatures)\n        var finalFeatureSet\n        if(caller == 'ReadDepth'){\n            finalFeatureSet = this.readDepthMeanshift(avgbin)\n            var baf = this.formatDataStructure_BAF(avgbin, 'max_likelihood')\n        }else if(caller=='2D'){\n            \n            let caller_obj = new combined_caller.CombinedCaller(avgbin,  this.binSize)        \n            let processed_bins = await caller_obj.call_2d()\n            \n            finalFeatureSet = [processed_bins.binScore, [], processed_bins.segment_score]\n    \n            var baf = caller_obj.formatDataStructure_BAF('max_likelihood')\n        }\n        \n\n        return [finalFeatureSet, baf]\n    }\n\n    formatDataStructure_BAF(wigFeatures, feature_column, scaling_factor = 2) {\n        const baf1 = []\n        const baf2 = []\n        for (const [chr, wig] of Object.entries(wigFeatures)) {\n\n            wig.forEach(sample => {\n                delete sample.likelihood_score;\n                var baf1_value = { ...sample }\n                var baf2_value = { ...sample }\n                \n                let value = sample[feature_column]\n                if (value != 0.5){\n                    baf2_value.value = -2 * (1 - value)\n                    baf2.push(baf2_value)\n                }\n                baf1_value.value = -2 * value\n                baf1.push(baf1_value)\n                    \n            })\n        }\n        \n\n        return [baf1, baf2]\n    }\n    \n    adjust_bin_size(wigFeatures){\n        const chromosomes = Object.keys(this.allVariants)\n        // adjust the bin values to actual bin size\n        var avgbin = {}\n        for (let chr of chromosomes) {\n            if (!avgbin[chr]) { avgbin[chr] = [] }\n            for (let k = 0; k < wigFeatures[chr].length / this.binFactor; k++) {\n                const featureBin = k\n                if (!avgbin[chr][k]) {\n                    avgbin[chr][k] = {\n                        chr,\n                        start: featureBin * this.binSize,\n                        end: (featureBin + 1) * this.binSize,\n                        dp_count: 0,\n                        hets_count: 0,\n                        binScore: 0,\n                        likelihood_score: [],\n                    }\n                }\n\n                for (var j = k * 10; j < 10 * k + 10; j++) {\n                   \n                    if (wigFeatures[chr][j]) {\n                        var tmp_score = parseInt(wigFeatures[chr][j].dp_sum_score / wigFeatures[chr][j].dp_count) * 100;\n                        avgbin[chr][k].binScore += tmp_score;\n                        avgbin[chr][k].dp_count += wigFeatures[chr][j].dp_count\n                        avgbin[chr][k].hets_count += wigFeatures[chr][j].hets_count\n\n                        if (wigFeatures[chr][j].hets.length != 0){\n                        \n                            \n                            wigFeatures[chr][j].hets.forEach((hets, hets_idx) => {\n                                if(avgbin[chr][k].likelihood_score.length == 0){\n                                    avgbin[chr][k].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {\n                                        return beta(hets.ref, hets.alt, value);\n                                    });\n                                }\n                                else{\n                                    var likelihood_sum = 0\n                                    avgbin[chr][k].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {\n                                        var likelihood_value = avgbin[chr][k].likelihood_score[index] * beta(hets.ref, hets.alt, value);\n                                        likelihood_sum += likelihood_value;\n                                        return likelihood_value;\n                                    });\n\n                                    avgbin[chr][k].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {\n                                        return avgbin[chr][k].likelihood_score[index] / likelihood_sum;\n                                    });\n                       \n                                }\n                            });\n                            \n                            // avgbin[chr][k].likelihood_score *= wigFeatures[chr][j].likelihood_score\n                        }\n                    }\n                }\n\n                const updated_bin = this.get_max_min_score(avgbin[chr][k])\n                avgbin[chr][k].max_likelihood = updated_bin.value\n            }\n        }\n        return avgbin\n    }\n\n}\n\nfunction beta(a, b, p, phased = true) {\n    return p ** a * (1 - p) ** b + p ** b * (1 - p) ** a;\n}\n\n\n\nexport { CNVpytorVCF }\n","/*\n* The MIT License (MIT)\n*\n* Copyright (c) 2016-2017 The Regents of the University of California\n* Author: Arijit Panda\n*\n* Permission is hereby granted, free of charge, to any person obtaining a copy\n* of this software and associated documentation files (the \"Software\"), to deal\n* in the Software without restriction, including without limitation the rights\n* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n* copies of the Software, and to permit persons to whom the Software is\n* furnished to do so, subject to the following conditions:\n*\n* The above copyright notice and this permission notice shall be included in\n* all copies or substantial portions of the Software.\n*\n*\n* THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n* THE SOFTWARE.\n*/\n\nimport TrackBase from \"../trackBase.js\"\nimport paintAxis from \"../util/paintAxis.js\"\nimport MenuUtils from \"../ui/menuUtils.js\"\nimport HDF5IndexedReader from \"./HDF5IndexedReader.js\"\nimport {CNVpytorVCF} from \"./cnvpytorVCF.js\"\nimport FeatureSource from '../feature/featureSource.js'\nimport $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport {createCheckbox} from \"../igv-icons.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\n\n\n/**\n * Represents 2 or more wig tracks overlaid on a common viewport.\n */\n\nconst DEFAULT_TRACK_HEIGHT = 250\nconst DEFAULT_BAF_TRACK_HEIGHT = 100\n\nclass CNVPytorTrack extends TrackBase {\n\n    constructor(config, browser) {\n        super(config, browser)\n        this.featureType = 'numeric'\n        this.paintAxis = paintAxis\n        \n        if (!config.max) {\n            this.defaultScale = true\n            this.autoscale = false\n        }\n\n        // Invoke height setter last to allocated to coverage and alignment tracks\n        this.height = (config.height !== undefined ? config.height : DEFAULT_TRACK_HEIGHT)\n    }\n\n    async init(config) {\n\n        this.type = \"cnvpytor\"\n        this.graphType = config.graphType || \"points\"\n        this.bin_size = config.bin_size || 100000\n        this.signal_name = config.signal_name || \"rd_snp\"\n        this.cnv_caller = config.cnv_caller || '2D'\n        this.colors = config.colors || ['gray', 'black', 'green', 'blue']\n        super.init(config)\n\n    }\n\n    get supportsWholeGenome() {\n        return true\n    }\n\n    get_signals() {\n        let signals = []\n\n        if (this.signal_name == 'rd_snp') {\n            signals = [\"RD_Raw\", \"RD_Raw_gc_coor\", this.cnv_caller, \"BAF1\", \"BAF2\"]\n\n        } else if (this.signal_name == 'rd') {\n            signals = [\"RD_Raw\", \"RD_Raw_gc_coor\", this.cnv_caller]\n\n        } else if (this.signal_name == 'snp') {\n            signals = [\"BAF1\", \"BAF2\"]\n\n        } else if (this.signal_name == 'cnh') {\n            signals = [this.cnv_caller]\n        }\n        return signals\n    }\n\n    get_signal_colors() {\n        \n        let signal_colors = [\n            { singal_name: 'RD_Raw', color: this.colors[0] },\n            { singal_name: 'RD_Raw_gc_coor', color: this.colors[1] },\n            { singal_name: 'ReadDepth', color: this.colors[2] },\n            { singal_name: '2D', color: this.colors[2] },\n            { singal_name: 'BAF1', color: this.colors[3] },\n            { singal_name: 'BAF2', color: this.colors[3] },\n        ]\n        return signal_colors\n    }\n\n    async postInit() {\n\n        if (this.config.format == 'vcf') {\n            this.featureSource = FeatureSource(this.config, this.browser.genome)\n            this.header = await this.getHeader()\n\n\n            var allVariants = this.featureSource.reader.features.reduce(function (r, a) {\n                r[a.chr] = r[a.chr] || []\n                r[a.chr].push(a)\n                return r\n            }, Object.create(null))\n\n            const cnvpytor_obj = new CNVpytorVCF(allVariants, this.bin_size)\n            \n            let wigFeatures;\n            let bafFeatures;\n            this.wigFeatures_obj = {}\n            this.wigFeatures_obj[this.bin_size] = {}\n\n            let dataWigs;\n            if(this.config.cnv_caller == '2D'){\n                \n                dataWigs = await cnvpytor_obj.read_rd_baf('2D')\n\n                wigFeatures = dataWigs[0]\n                bafFeatures = dataWigs[1]\n                this.wigFeatures_obj[this.bin_size]['2D'] = wigFeatures[2]\n\n                this.available_callers = ['2D']\n            }else{\n                dataWigs = await cnvpytor_obj.read_rd_baf()\n                wigFeatures = dataWigs[0]\n                bafFeatures = dataWigs[1]\n                this.wigFeatures_obj[this.bin_size]['ReadDepth'] = wigFeatures[2]\n                this.available_callers = ['ReadDepth']\n            }\n            \n            this.wigFeatures_obj[this.bin_size]['RD_Raw'] = wigFeatures[0]\n            this.wigFeatures_obj[this.bin_size]['RD_Raw_gc_coor'] = wigFeatures[1]\n            this.wigFeatures_obj[this.bin_size]['BAF1'] = bafFeatures[0]\n            this.wigFeatures_obj[this.bin_size]['BAF2'] = bafFeatures[1]\n            \n            this.available_bins = [this.bin_size]\n            \n            this.set_available_callers()\n\n        } else {\n            this.cnvpytor_obj =   new HDF5IndexedReader(this.config.url, this.bin_size)\n            this.wigFeatures_obj = await this.cnvpytor_obj.get_rd_signal(this.bin_size)\n            this.available_bins = this.cnvpytor_obj.available_bins\n            this.available_callers = this.cnvpytor_obj.callers\n            this.set_available_callers()\n        }\n\n        this.tracks = []\n        const p = []\n\n        this.signals = this.get_signals()\n        this.signal_colors = this.get_signal_colors()\n\n        for (let bin_size in this.wigFeatures_obj) {\n            let i = 0\n\n            for (const [signal_name, wig] of Object.entries(this.wigFeatures_obj[bin_size])) {\n\n                if (this.signals.includes(signal_name)) {\n                    let tconf = {}\n                    tconf.type = \"wig\"\n                    tconf.isMergedTrack = true\n                    tconf.features = wig\n                    tconf.name = signal_name\n                    tconf.color = this.signal_colors.filter(x => x.singal_name === signal_name).map(x => x.color)\n                    const t = await this.browser.createTrack(tconf)\n                    if (t) {\n                        t.autoscale = false     // Scaling done from merged track\n                        this.tracks.push(t)\n                    } else {\n                        console.warn(\"Could not create track \" + tconf)\n                    }\n\n                    if (typeof t.postInit === 'function') {\n                        p.push(t.postInit())\n                    }\n                    i++\n                }\n            }\n\n        }\n\n\n        this.flipAxis = this.config.flipAxis ? this.config.flipAxis : false\n        this.logScale = this.config.logScale ? this.config.logScale : false\n        this.autoscale = this.config.autoscale\n        if (!this.autoscale) {\n            this.dataRange = {\n                min: this.config.min || 0,\n                max: this.config.max\n            }\n        }\n        for (let t of this.tracks) {\n            t.autoscale = false\n            t.dataRange = this.dataRange\n        }\n\n        return Promise.all(p)\n    }\n\n    set_available_callers() {\n        if (!this.available_callers.includes(this.cnv_caller)) {\n            if (this.available_callers.length > 0) {\n                this.cnv_caller = this.available_callers[0]\n            } else {\n                this.cnv_caller = null\n            }\n        }\n    }\n\n    async getHeader() {\n\n        if (!this.header) {\n            if (typeof this.featureSource.getHeader === \"function\") {\n                const header = await this.featureSource.getHeader()\n                if (header) {\n                    this.callSets = header.callSets || []\n                }\n                this.header = header\n            }\n            this.sampleNames = this.callSets ? this.callSets.map(cs => cs.name) : []\n        }\n\n        return this.header\n    }\n\n    get height() {\n        return this._height\n    }\n\n    set height(h) {\n        this._height = h\n        if (this.tracks) {\n            for (let t of this.tracks) {\n                t.height = h\n                t.config.height = h\n            }\n        }\n    }\n\n    menuItemList() {\n        let items = []\n\n        if (this.flipAxis !== undefined) {\n            items.push({\n                label: \"Flip y-axis\",\n                click: () => {\n                    this.flipAxis = !this.flipAxis\n                    this.trackView.repaintViews()\n                }\n            })\n        }\n\n        items = items.concat(MenuUtils.numericDataMenuItems(this.trackView))\n\n        items.push('<hr/>')\n        items.push(\"Bin Sizes\")\n        for (let rd_bin of this.available_bins) {\n            const checkBox = createCheckbox(rd_bin, rd_bin === this.bin_size)\n            items.push({\n                object: $(checkBox),\n                click: async () => {\n                    this.bin_size = rd_bin\n\n                    await this.recreate_tracks(rd_bin)\n                    this.clearCachedFeatures()\n                    this.trackView.updateViews()\n                    this.trackView.repaintViews()\n                }\n            })\n        }\n        items.push('<hr/>')\n        items.push(\"Signal Type\")\n\n        let signal_dct = {\"rd_snp\": \"RD and BAF Likelihood\", \"rd\": \"RD Signal\", \"snp\": \"BAF Likelihood\"}\n        for (let signal_name in signal_dct) {\n            const checkBox = createCheckbox(signal_dct[signal_name], signal_name === this.signal_name)\n            items.push({\n                object: $(checkBox),\n                click: async () => {\n                    this.signal_name = signal_name\n                    await this.recreate_tracks(this.bin_size)\n                    this.clearCachedFeatures()\n                    this.trackView.updateViews()\n                    this.trackView.repaintViews()\n\n                }\n            })\n        }\n\n        // cnv caller setting\n        items.push('<hr/>')\n        items.push(\"CNV caller\")\n        for (let cnv_caller of this.available_callers) {\n            const checkBox = createCheckbox(cnv_caller, cnv_caller === this.cnv_caller)\n            items.push({\n                object: $(checkBox),\n                click: async () => {\n                    this.cnv_caller = cnv_caller\n                    await this.recreate_tracks(this.bin_size)\n                    this.clearCachedFeatures()\n                    this.trackView.updateViews()\n                    this.trackView.repaintViews()\n                }\n            })\n        }\n\n        return items\n    }\n\n    async recreate_tracks(bin_size) {\n        this.tracks = []\n        const p = []\n\n        if (!(bin_size in this.wigFeatures_obj)) {\n            this.wigFeatures_obj = {...this.wigFeatures_obj, ...await this.cnvpytor_obj.get_rd_signal(bin_size)}\n        }\n\n        this.signals = this.get_signals()\n        this.signal_colors = this.get_signal_colors()\n\n        let i = 0\n\n        for (const [signal_name, wig] of Object.entries(this.wigFeatures_obj[bin_size])) {\n            if (this.signals.includes(signal_name)) {\n                let tconf = {}\n                tconf.type = \"wig\"\n                tconf.isMergedTrack = true\n                tconf.features = wig\n                tconf.name = signal_name\n                tconf.color = this.signal_colors.filter(x => x.singal_name === signal_name).map(x => x.color) \n                const t = await this.browser.createTrack(tconf)\n                if (t) {\n                    t.autoscale = false     // Scaling done from merged track\n                    this.tracks.push(t)\n                } else {\n                    console.warn(\"Could not create track \" + tconf)\n                }\n\n                if (typeof t.postInit === 'function') {\n                    p.push(t.postInit())\n                }\n                i++\n            }\n\n        }\n\n\n        this.flipAxis = this.config.flipAxis ? this.config.flipAxis : false\n        this.logScale = this.config.logScale ? this.config.logScale : false\n        this.autoscale = this.config.autoscale\n        if (!this.autoscale) {\n            this.dataRange = {\n                min: this.config.min || 0,\n                max: this.config.max\n            }\n        }\n        for (let t of this.tracks) {\n            t.autoscale = false\n            t.dataRange = this.dataRange\n        }\n        return Promise.all(p)\n    }\n\n    async getFeatures(chr, bpStart, bpEnd, bpPerPixel) {\n\n        if(this.tracks) {\n            const promises = this.tracks.map((t) => t.getFeatures(chr, bpStart, bpEnd, bpPerPixel))\n            return Promise.all(promises)\n        } else {\n            return undefined  // This can happen if a redraw is triggered before the track has initialized.\n        }\n    }\n\n    // TODO: refactor to igvUtils.js\n    getScaleFactor(min, max, height, logScale) {\n        const scale = logScale ? height / (Math.log10(max + 1) - (min <= 0 ? 0 : Math.log10(min + 1))) : height / (max - min)\n        return scale\n    }\n\n    computeYPixelValue(yValue, yScaleFactor) {\n        return (this.flipAxis ? (yValue - this.dataRange.min) : (this.dataRange.max - yValue)) * yScaleFactor\n    }\n\n    computeYPixelValueInLogScale(yValue, yScaleFactor) {\n        let maxValue = this.dataRange.max\n        let minValue = this.dataRange.min\n        if (maxValue <= 0) return 0 // TODO:\n        if (minValue <= -1) minValue = 0\n        minValue = (minValue <= 0) ? 0 : Math.log10(minValue + 1)\n        maxValue = Math.log10(maxValue + 1)\n        yValue = Math.log10(yValue + 1)\n        return ((this.flipAxis ? (yValue - minValue) : (maxValue - yValue)) * yScaleFactor)\n    }\n\n    draw(options) {\n\n        // const mergedFeatures = options.features    // Array of feature arrays, 1 for each track\n        const mergedFeatures = options.features\n        if(!mergedFeatures) return\n\n        if (this.defaultScale) {\n            if (this.signal_name == 'rd_snp') {\n                this.dataRange = {\n                    min: this.config.min || this.dataRange.min || -2,\n                    max: this.config.max || this.dataRange.max || 6\n                }\n            } else if (this.signal_name == 'rd') {\n                this.dataRange = {\n                    min: this.config.min || this.dataRange.min || 0,\n                    max: this.config.max || this.dataRange.max || 6\n                }\n            } else if (this.signal_name == 'snp') {\n                this.dataRange = {\n                    min: this.config.min || this.dataRange.min || -2,\n                    max: this.config.max || this.dataRange.max || 0\n                }\n            }\n        }\n\n        if (this.autoscale) {\n            this.dataRange = autoscale(options.referenceFrame.chr, mergedFeatures)\n        }\n\n        if(this.tracks) {\n            for (let i = 0, len = this.tracks.length; i < len; i++) {\n                const trackOptions = Object.assign({}, options)\n                trackOptions.features = mergedFeatures[i]\n                this.tracks[i].dataRange = this.dataRange\n                this.tracks[i].flipAxis = this.flipAxis\n                this.tracks[i].logScale = this.logScale\n                if (this.graphType) {\n                    this.tracks[i].graphType = this.graphType\n                }\n                this.tracks[i].draw(trackOptions)\n            }\n        }\n\n        // guides lines\n        const scaleFactor = this.getScaleFactor(this.dataRange.min, this.dataRange.max, options.pixelHeight, this.logScale)\n        const yScale = (yValue) => this.logScale\n            ? this.computeYPixelValueInLogScale(yValue, scaleFactor)\n            : this.computeYPixelValue(yValue, scaleFactor)\n\n         // Draw guidelines\n         if (this.config.hasOwnProperty('guideLines')) {\n            for (let line of this.config.guideLines) {\n                if (line.hasOwnProperty('color') && line.hasOwnProperty('y') && line.hasOwnProperty('dotted')) {\n                    let y = yScale(line.y)\n                    let props = {\n                        'strokeStyle': line['color'],\n                        'strokeWidth': 1\n                    }\n                    if (line['dotted']) IGVGraphics.dashedLine(options.context, 0, y, options.pixelWidth, y, 5, props)\n                    else IGVGraphics.strokeLine(options.context, 0, y, options.pixelWidth, y, props)\n                }\n            }\n        }\n    }\n\n    popupData(clickState, features) {\n\n        const featuresArray = features || clickState.viewport.cachedFeatures\n\n        if (featuresArray && featuresArray.length === this.tracks.length) {\n            // Array of feature arrays, 1 for each track\n            const popupData = []\n            for (let i = 0; i < this.tracks.length; i++) {\n                if (i > 0) popupData.push('<hr/>')\n                popupData.push(`<div style=background-color:rgb(245,245,245);border-bottom-style:dashed;border-bottom-width:1px;padding-bottom:5px;padding-top:10px;font-weight:bold;font-size:larger >${this.tracks[i].name}</div>`)\n                const trackPopupData = this.tracks[i].popupData(clickState, featuresArray[i])\n                popupData.push(...trackPopupData)\n\n            }\n            return popupData\n        }\n    }\n\n}\n\nfunction autoscale(chr, featureArrays) {\n\n    let min = 0\n    let max = -Number.MAX_VALUE\n    for (let features of featureArrays) {\n        for (let f of features) {\n            if (typeof f.value !== 'undefined' && !Number.isNaN(f.value)) {\n                min = Math.min(min, f.value)\n                max = Math.max(max, f.value)\n            }\n        }\n    }\n    return {min: min, max: max}\n}\n\nexport default CNVPytorTrack\n","import FeatureTrack from \"./feature/featureTrack.js\"\nimport SequenceTrack from \"./sequenceTrack.js\"\nimport WigTrack from \"./feature/wigTrack.js\"\nimport SegTrack from \"./feature/segTrack.js\"\nimport MergedTrack from \"./feature/mergedTrack.js\"\nimport BAMTrack from \"./bam/bamTrack.js\"\nimport InteractionTrack from \"./feature/interactionTrack.js\"\nimport VariantTrack from \"./variant/variantTrack.js\"\nimport EqtlTrack from \"./gtex/eqtlTrack.js\"\nimport GWASTrack from \"./gwas/gwasTrack.js\"\nimport GCNVTrack from \"./gcnv/gcnvTrack.js\"\nimport RnaStructTrack from \"./rna/rnaStruct.js\"\nimport IdeogramTrack from \"./ideogramTrack.js\"\nimport SpliceJunctionTrack from \"./feature/spliceJunctionTrack.js\"\nimport BlatTrack from \"./blat/blatTrack.js\"\nimport CNVPytorTrack from \"./cnvpytor/cnvpytorTrack.js\"\n//import CNVPytorTrack from \"./CNVpytor/cnvpytorTrack.js\"\n\n\nconst trackFunctions =\n    new Map([\n        ['ideogram', (config, browser) => new IdeogramTrack(config, browser)],\n        ['sequence', (config, browser) => new SequenceTrack(config, browser)],\n        ['feature', (config, browser) => new FeatureTrack(config, browser)],\n        ['seg', (config, browser) => new SegTrack(config, browser)],\n        ['mut', (config, browser) => new SegTrack(config, browser)],\n        ['maf', (config, browser) => new SegTrack(config, browser)],\n        ['wig', (config, browser) => new WigTrack(config, browser)],\n        ['merged', (config, browser) => new MergedTrack(config, browser)],\n        ['alignment', (config, browser) => new BAMTrack(config, browser)],\n        ['interaction', (config, browser) => new InteractionTrack(config, browser)],\n        ['interact', (config, browser) => new InteractionTrack(config, browser)],\n        ['variant', (config, browser) => new VariantTrack(config, browser)],\n        ['eqtl', (config, browser) => new EqtlTrack(config, browser)],\n        ['gwas', (config, browser) => new GWASTrack(config, browser)],\n        ['arc', (config, browser) => new RnaStructTrack(config, browser)],\n        ['gcnv', (config, browser) => new GCNVTrack(config, browser)],\n        ['junction', (config, browser) => new SpliceJunctionTrack(config, browser)],\n        ['blat', (config, browser) => new BlatTrack(config, browser)],\n        ['cnvpytor', (config, browser) => new CNVPytorTrack(config, browser)]\n    ])\n\n\n/**\n * Add a track constructor  the the factory lookup table.\n *\n * @param type\n * @param track\n */\nconst addTrackCreatorFunction = function (type, track) {\n    trackFunctions.set(type, track)\n}\n\nconst getTrack = function (type, config, browser) {\n\n    let trackKey\n    switch (type) {\n        case \"annotation\":\n        case \"genes\":\n        case \"fusionjuncspan\":\n        case \"snp\":\n            trackKey = \"feature\"\n            break\n        case 'seg':\n        case 'maf':\n        case 'mut':\n            trackKey = 'seg'\n            break\n        case 'junctions':\n        case 'splicejunctions':\n            trackKey = 'junction'\n            break\n        default:\n            trackKey = type\n    }\n\n    return trackFunctions.has(trackKey) ?\n        trackFunctions.get(trackKey)(config, browser) :\n        undefined\n}\n\nexport default {\n    tracks: trackFunctions,\n    addTrack: addTrackCreatorFunction,\n    trackFunctions,\n    addTrackCreatorFunction,\n    getTrack\n}\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n/**\n * Minimal support for the legacy IGV desktop session format.\n */\n\nclass XMLSession {\n\n    constructor(xmlString, knownGenomes) {\n\n        const parser = new DOMParser()\n        const xmlDoc = parser.parseFromString(xmlString, \"text/xml\")\n\n        this.processRootNode(xmlDoc, knownGenomes)\n\n        const resourceElements = xmlDoc.getElementsByTagName(\"Resource\")\n        const trackElements = xmlDoc.getElementsByTagName(\"Track\")\n        const hasTrackElements = trackElements && trackElements.length > 0\n\n        const tracks = []\n        this.tracks = tracks\n\n        const resourceMap = new Map()\n        Array.from(resourceElements).forEach(function (r, idx) {\n            var config = {\n                url: r.getAttribute(\"path\"),\n                indexURL: r.getAttribute(\"index\"),\n                order: idx\n            }\n            resourceMap.set(config.url, config)\n            if (!hasTrackElements) {\n                tracks.push(config)\n            }\n        })\n\n        // Check for optional Track section\n        if (hasTrackElements) {\n\n            Array.from(trackElements).forEach(function (track) {\n\n                const subtracks = track.getElementsByTagName(\"Track\")\n\n                if (subtracks && subtracks.length > 0) {\n\n                    const mergedTrack = {\n                        type: 'merged',\n                        tracks: []\n                    }\n                    extractTrackAttributes(track, mergedTrack)\n\n                    tracks.push(mergedTrack)\n\n                    Array.from(subtracks).forEach(function (t) {\n                        t.processed = true\n                        const id = t.getAttribute(\"id\")\n                        const config = resourceMap.get(id)\n                        if (config) {\n                            mergedTrack.tracks.push(config)\n                            extractTrackAttributes(t, config)\n                            config.autoscale = false\n                            mergedTrack.height = config.height\n\n                            // Add alpha for merged track colors.  Alpha is not recorded by IGV desktop in XML session\n                            //const color = t.getAttribute(\"color\");\n                            //if (color) {\n                            //    config.color = \"rgba(\" + color + \",0.5)\";\n                            //}\n                        }\n                    })\n                } else if (!track.processed) {\n\n                    const id = track.getAttribute(\"id\")\n                    const res = resourceMap.get(id)\n                    if (res) {\n                        tracks.push(res)\n                        extractTrackAttributes(track, res)\n                    }\n\n                }\n            })\n        }\n    }\n\n    processRootNode(xmlDoc, knownGenomes) {\n\n        const elements = xmlDoc.getElementsByTagName(\"Session\")\n        if (!elements || elements.length === 0) {\n            //TODO throw error\n        }\n        const session = elements.item(0)\n        const genome = session.getAttribute(\"genome\")\n        const locus = session.getAttribute(\"locus\")\n        const ucscID = session.getAttribute(\"ucscID\")\n\n        if (knownGenomes && knownGenomes.hasOwnProperty(genome)) {\n            this.genome = genome\n\n        } else {\n            this.reference = {\n                fastaURL: genome\n            }\n            if (ucscID) {\n                this.reference.id = ucscID\n            }\n        }\n        if (locus) {\n            this.locus = locus\n        }\n    }\n\n}\n\n\nfunction extractTrackAttributes(track, config) {\n\n\n    config.name = track.getAttribute(\"name\")\n\n    const color = track.getAttribute(\"color\")\n    if (color) {\n        config.color = \"rgb(\" + color + \")\"\n    }\n\n    const altColor = track.getAttribute(\"altColor\")\n    if (color) {\n        config.altColor = \"rgb(\" + altColor + \")\"\n    }\n\n    const height = track.getAttribute(\"height\")\n    if (height) {\n        config.height = parseInt(height)\n    }\n\n    const autoScale = track.getAttribute(\"autoScale\")\n    if (autoScale) {\n        config.autoscale = (autoScale === \"true\")\n    }\n\n    const autoscaleGroup = track.getAttribute(\"autoscaleGroup\")\n    if (autoscaleGroup) {\n        config.autoscaleGroup = autoscaleGroup\n    }\n\n    const windowFunction = track.getAttribute(\"windowFunction\")\n    if (windowFunction) {\n        config.windowFunction = windowFunction\n    }\n    const visWindow = track.getAttribute(\"visibilityWindow\") || track.getAttribute(\"featureVisibilityWindow\")\n    if (visWindow) {\n        config.visibilityWindow = visWindow\n    }\n\n    const indexed = track.getAttribute(\"indexed\")\n    if (indexed) {\n        config.indexed = (indexed === \"true\")\n    }\n\n    const normalize = track.getAttribute(\"normalize\")\n    if (normalize) {\n        config.normalize = normalize === \"true\"\n    }\n\n    const dataRangeCltn = track.getElementsByTagName(\"DataRange\")\n    if (dataRangeCltn.length > 0) {\n        const dataRange = dataRangeCltn.item(0)\n        config.min = Number(dataRange.getAttribute(\"minimum\"))\n        config.max = Number(dataRange.getAttribute(\"maximum\"))\n        config.logScale = dataRange.getAttribute(\"type\") === \"LOG\"\n    }\n}\n\nexport default XMLSession\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014-2015 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {igvxhr, StringUtils} from \"../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"./util/igvUtils.js\"\n\nconst splitLines = StringUtils.splitLines\n\nclass SampleInformation {\n    constructor() {\n        this.attributes = {}\n        this.plinkLoaded = false\n    }\n\n    async loadPlinkFile(url, config) {\n\n        if (!config) config = {}\n\n        var options = buildOptions(config)    // Add oauth token, if any\n        const data = await igvxhr.loadString(url, options)\n        var lines = splitLines(data)\n\n        for (let line of lines) {\n            var line_arr = line.split(' ')\n            this.attributes[line_arr[1]] = {\n                familyId: line_arr[0],\n                fatherId: line_arr[2],\n                motherId: line_arr[3],\n                sex: line_arr[4],\n                phenotype: line_arr[5]\n            }\n        }\n        this.plinkLoaded = true\n        return this\n    }\n\n    /**\n     * Return the attributes for the given sample as a map-like object (key-value pairs)\n     * @param sample\n     */\n    getAttributes(sample) {\n        return this.attributes[sample]\n    };\n\n    getAttributeNames() {\n\n        if (this.hasAttributes()) {\n            return Object.keys(this.attributes[Object.keys(this.attributes)[0]])\n        } else return []\n    };\n\n    hasAttributes() {\n        return Object.keys(this.attributes).length > 0\n    }\n}\n\nfunction loadPlinkFile(url, config) {\n    const si = new SampleInformation()\n    return si.loadPlinkFile(url, config)\n}\n\nexport default loadPlinkFile\n\n\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nclass GtexSelection {\n\n    constructor(gene, snp) {\n        this.geneColors = {}\n        this.gene = null\n        this.snp = null\n        this.genesCount = 0\n\n        if (gene) {\n            this.gene = gene.toUpperCase()\n            this.geneColors[this.gene] = brewer[this.genesCount++]\n\n        }\n        if (snp) {\n            this.snp = snp.toUpperCase()\n        }\n    }\n\n    addGene(geneName) {\n        if (!this.geneColors[geneName.toUpperCase()]) {\n            this.geneColors[geneName.toUpperCase()] = brewer[this.genesCount++]\n        }\n    }\n\n    colorForGene(geneName) {\n        return this.geneColors[geneName.toUpperCase()]\n    }\n}\n\nvar brewer = []\n// Set +!\nbrewer.push(\"rgb(228,26,28)\")\nbrewer.push(\"rgb(55,126,184)\")\nbrewer.push(\"rgb(77,175,74)\")\nbrewer.push(\"rgb(166,86,40)\")\nbrewer.push(\"rgb(152,78,163)\")\nbrewer.push(\"rgb(255,127,0)\")\nbrewer.push(\"rgb(247,129,191)\")\nbrewer.push(\"rgb(153,153,153)\")\nbrewer.push(\"rgb(255,255,51)\")\n\n// #Set 2\nbrewer.push(\"rgb(102, 194, 165\")\nbrewer.push(\"rgb(252, 141, 98\")\nbrewer.push(\"rgb(141, 160, 203\")\nbrewer.push(\"rgb(231, 138, 195\")\nbrewer.push(\"rgb(166, 216, 84\")\nbrewer.push(\"rgb(255, 217, 47\")\nbrewer.push(\"rgb(229, 196, 148\")\nbrewer.push(\"rgb(179, 179, 179\")\n\n//#Set 3\nbrewer.push(\"rgb( 141, 211, 199\")\nbrewer.push(\"rgb(255, 255, 179\")\nbrewer.push(\"rgb(190, 186, 218\")\nbrewer.push(\"rgb(251, 128, 114\")\nbrewer.push(\"rgb(128, 177, 211\")\nbrewer.push(\"rgb(253, 180, 98\")\nbrewer.push(\"rgb(179, 222, 105\")\nbrewer.push(\"rgb(252, 205, 229\")\nbrewer.push(\"rgb(217, 217, 217\")\nbrewer.push(\"rgb(188, 128, 189\")\nbrewer.push(\"rgb(204, 235, 197\")\nbrewer.push(\"rgb(255, 237, 111\")\n\n\nexport default GtexSelection\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {StringUtils} from \"../node_modules/igv-utils/src/index.js\"\nimport {DOMUtils} from \"../node_modules/igv-ui/dist/igv-ui.js\"\nimport {prettyBasePairNumber, validateGenomicExtent} from \"./util/igvUtils.js\"\nimport GtexSelection from \"./gtex/gtexSelection.js\"\n\n// Reference frame classes.  Converts domain coordinates (usually genomic) to pixel coordinates\n\nclass ReferenceFrame {\n\n    constructor(genome, chr, start, end, bpPerPixel) {\n        this.genome = genome\n        this.chr = chr\n\n        this.start = start\n\n        // TODO WARNING THIS IS NOT UPDATED !!!\n        this.end = end\n\n        this.bpPerPixel = bpPerPixel\n        this.id = DOMUtils.guid()\n    }\n\n    /**\n     * Extend this frame to accomodate the given locus.  Used th CircularView methods to merge 2 frames.\n     * @param locus\n     */\n    extend(locus) {\n        const newStart = Math.min(locus.start, this.start)\n        const newEnd = Math.max(locus.end, this.end)\n        const ratio = (newEnd - newStart) / (this.end - this.start)\n        this.start = newStart\n        this.end = newEnd\n        this.bpPerPixel *= ratio\n    }\n\n    calculateEnd(pixels) {\n        return this.start + this.bpPerPixel * pixels\n    }\n\n    calculateBPP(end, pixels) {\n        return (end - this.start) / pixels\n    }\n\n    set(json) {\n        this.chr = json.chr\n        this.start = json.start\n        this.bpPerPixel = json.bpPerPixel\n    }\n\n    toPixels(bp) {\n        return bp / this.bpPerPixel\n    }\n\n    toBP(pixels) {\n        return this.bpPerPixel * pixels\n    }\n\n    /**\n     * Shift frame by stated pixels.  Return true if view changed, false if not.\n     *\n     * @param pixels\n     * @param clamp -- if true \"clamp\" shift to prevent panning off edge of chromosome.  This is disabled if \"show soft clipping\" is on\n     * @param viewportWidth\n     */\n    shiftPixels(pixels, viewportWidth, clamp) {\n\n        const currentStart = this.start\n        const deltaBP = pixels * this.bpPerPixel\n\n        this.start += deltaBP\n\n        if(clamp) {\n            this.clampStart(viewportWidth)\n        }\n\n        this.end = this.start + viewportWidth * this.bpPerPixel\n\n        return currentStart !== this.start\n    }\n\n    clampStart(viewportWidth) {\n        // clamp left\n        const min = (this.genome.getChromosome(this.chr).bpStart || 0)\n        this.start = Math.max(min, this.start)\n\n        // clamp right\n        if (viewportWidth) {\n\n            const {bpLength} = this.genome.getChromosome(this.chr)\n            const maxStart = bpLength - (viewportWidth * this.bpPerPixel)\n\n            if (this.start > maxStart) {\n                this.start = maxStart\n            }\n        }\n    }\n\n    async zoomWithScaleFactor(browser, scaleFactor, viewportWidth, centerBPOrUndefined) {\n\n        const centerBP = undefined === centerBPOrUndefined ? (this.start + this.toBP(viewportWidth / 2.0)) : centerBPOrUndefined\n\n        // save initial start and bpp\n        const {start, bpPerPixel} = this.start\n\n        const {bpLength} = this.getChromosome()\n        const bppThreshold = scaleFactor < 1.0 ? browser.minimumBases() / viewportWidth : bpLength / viewportWidth\n\n        // update bpp\n        if (scaleFactor < 1.0) {\n            this.bpPerPixel = Math.max(this.bpPerPixel * scaleFactor, bppThreshold)\n        } else {\n            this.bpPerPixel = Math.min(this.bpPerPixel * scaleFactor, bppThreshold)\n        }\n\n        // update start and end\n        const widthBP = this.bpPerPixel * viewportWidth\n        this.start = centerBP - 0.5 * widthBP\n        this.clampStart(viewportWidth)\n\n        this.end = this.start + widthBP\n\n        const viewChanged = start !== this.start || bpPerPixel !== this.bpPerPixel\n        if (viewChanged) {\n            await browser.updateViews(true)\n        }\n\n    }\n\n    getChromosome() {\n        return this.genome.getChromosome(this.chr)\n    }\n\n    getMultiLocusLabelBPLengthOnly(pixels) {\n        const margin = '&nbsp'\n        const space = '&nbsp &nbsp'\n        const ss = Math.floor(this.start) + 1\n        const ee = Math.round(this.start + this.bpPerPixel * pixels)\n        return `${margin}${this.chr}${margin}${prettyBasePairNumber(ee - ss)}${margin}`\n    }\n\n    getMultiLocusLabelLocusOnly(pixels) {\n        const margin = '&nbsp'\n        const {chr, start, end } = this.getPresentationLocusComponents(pixels)\n        return `${margin}${chr}:${start}-${end}${margin}`\n    }\n\n    getMultiLocusLabel(pixels) {\n        const margin = '&nbsp'\n        const space = '&nbsp &nbsp'\n        const {chr, start, end } = this.getPresentationLocusComponents(pixels)\n        const ss = Math.floor(this.start) + 1\n        const ee = Math.round(this.start + this.bpPerPixel * pixels)\n        return `${margin}${chr}:${start}-${end}${margin}${margin}(${prettyBasePairNumber(ee - ss)})${margin}`\n    }\n\n    getPresentationLocusComponents(pixels) {\n\n        if ('all' === this.chr) {\n            return {chr: this.chr}\n        } else {\n            const ss = StringUtils.numberFormatter(Math.floor(this.start) + 1)\n            const ee = StringUtils.numberFormatter(Math.round(this.start + this.bpPerPixel * pixels))\n\n            return {chr: this.chr, start: ss, end: ee}\n        }\n\n    }\n\n    getLocusString() {\n        if ('all' === this.chr) {\n            return 'all'\n        } else {\n            const ss = StringUtils.numberFormatter(Math.floor(this.start) + 1)\n            const ee = StringUtils.numberFormatter(Math.round(this.end))\n            return `${this.chr}:${ss}-${ee}`\n        }\n    }\n\n    description(blurb) {\n        console.log(` ${blurb || ''} referenceFrame - ${this.chr} bpp ${this.bpPerPixel.toFixed(3)} start ${StringUtils.numberFormatter(Math.round(this.start))} end ${StringUtils.numberFormatter(Math.round(this.end))} `)\n    }\n}\n\nfunction createReferenceFrameList(loci, genome, browserFlanking, minimumBases, viewportWidth, isSoftclipped) {\n\n    return loci.map(locus => {\n\n        // If a flanking region is defined, and the search object is a symbol (\"gene\") type, adjust start and end\n        if (browserFlanking && locus.gene) {\n            locus.start = Math.max(0, locus.start - browserFlanking)\n            locus.end += browserFlanking\n        }\n\n        // Validate the range.  This potentionally modifies start & end of locus.\n        if(!isSoftclipped) {\n            const chromosome = genome.getChromosome(locus.chr)\n            validateGenomicExtent(chromosome.bpLength, locus, minimumBases)\n        }\n\n        const referenceFrame = new ReferenceFrame(genome,\n            locus.chr,\n            locus.start,\n            locus.end,\n            (locus.end - locus.start) / viewportWidth)\n\n        referenceFrame.locusSearchString = locus.locusSearchString\n\n        // GTEX hack\n        if (locus.gene || locus.snp) {\n            referenceFrame.selection = new GtexSelection(locus.gene, locus.snp)\n        }\n\n        return referenceFrame\n    })\n}\n\nfunction adjustReferenceFrame(scaleFactor, referenceFrame, viewportWidth, alignmentStart, alignmentLength) {\n\n    referenceFrame.bpPerPixel *= scaleFactor\n\n    const alignmentEE = alignmentStart + alignmentLength\n    const alignmentCC = (alignmentStart + alignmentEE) / 2\n\n    referenceFrame.start = alignmentCC - (referenceFrame.bpPerPixel * (viewportWidth / 2))\n    referenceFrame.end = referenceFrame.start + (referenceFrame.bpPerPixel * viewportWidth)\n    referenceFrame.locusSearchString = referenceFrame.getLocusString()\n}\n\nfunction createReferenceFrameWithAlignment(genome, chromosomeName, bpp, viewportWidth, alignmentStart, alignmentLength) {\n\n    const alignmentEE = alignmentStart + alignmentLength\n    const alignmentCC = (alignmentStart + alignmentEE) / 2\n\n    const ss = alignmentCC - (bpp * (viewportWidth / 2))\n    const ee = ss + (bpp * viewportWidth)\n\n    return new ReferenceFrame(genome, chromosomeName, ss, ee, bpp)\n\n}\n\nexport {createReferenceFrameList, adjustReferenceFrame, createReferenceFrameWithAlignment}\nexport default ReferenceFrame\n","import {igvxhr, StringUtils} from \"../node_modules/igv-utils/src/index.js\"\n\n\nconst DEFAULT_SEARCH_CONFIG = {\n    timeout: 5000,\n    type: \"plain\",   // Legacy plain text support -- deprecated\n    url: 'https://igv.org/genomes/locus.php?genome=$GENOME$&name=$FEATURE$',\n    coords: 0,\n    chromosomeField: \"chromosome\",\n    startField: \"start\",\n    endField: \"end\",\n    geneField: \"gene\",\n    snpField: \"snp\"\n}\n\n/**\n * Return an object representing the locus of the given string.  Object is of the form\n * {\n *   chr,\n *   start,\n *   end,\n *   locusSearchString,\n *   gene,\n *   snp\n * }\n * @param browser\n * @param string\n * @returns {Promise<*>}\n */\nasync function search(browser, string) {\n\n    if (undefined === string || '' === string.trim()) {\n        return\n    }\n\n    if (string && string.trim().toLowerCase() === \"all\" || string === \"*\") {\n        string = \"all\"\n    }\n\n    const loci = string.split(' ')\n\n    let searchConfig = browser.searchConfig || DEFAULT_SEARCH_CONFIG\n    let list = []\n\n    const searchLocus = async (locus) => {\n        let locusObject = parseLocusString(browser, locus)\n\n        if (!locusObject) {\n            const feature = browser.genome.featureDB.get(locus.toUpperCase())\n            if (feature) {\n                locusObject = {\n                    chr: feature.chr,\n                    start: feature.start,\n                    end: feature.end,\n                    gene: feature.name,\n                    locusSearchString: string\n                }\n            }\n        }\n\n        if (!locusObject && (browser.config && false !== browser.config.search)) {\n            try {\n                locusObject = await searchWebService(browser, locus, searchConfig)\n            } catch (error) {\n                console.error(error)\n                throw Error(\"Search service currently unavailable.\")\n            }\n        }\n        return locusObject\n    }\n\n    for (let locus of loci) {\n        const locusObject = await searchLocus(locus)\n        if (locusObject) {\n            locusObject.locusSearchString = locus\n            list.push(locusObject)\n        }\n    }\n\n    // If nothing is found, consider possibility that loci name itself has spaces\n    if (list.length === 0) {\n        const locusObject = await searchLocus(string)\n        if (locusObject) {\n            locusObject.locusSearchString = string\n            list.push(locusObject)\n        }\n    }\n\n\n    return 0 === list.length ? undefined : list\n}\n\nfunction parseLocusString(browser, locus) {\n\n    // Check for tab delimited locus string\n    const tabTokens = locus.split('\\t')\n    if (tabTokens.length >= 3) {\n        // Possibly a tab-delimited locus\n        try {\n            const chr = browser.genome.getChromosomeName(tabTokens[0])\n            const start = parseInt(tabTokens[1].replace(/,/g, ''), 10) - 1\n            const end = parseInt(tabTokens[2].replace(/,/g, ''), 10)\n            if (!isNaN(start) && !isNaN(end)) {\n                return {chr, start, end}\n            }\n        } catch (e) {\n            // Not a tab delimited locus, apparently, but not really an error as that was a guess\n        }\n\n    }\n\n    const a = locus.split(':')\n    const chr = a[0]\n    if ('all' === chr && browser.genome.getChromosome(chr)) {\n        return {chr, start: 0, end: browser.genome.getChromosome(chr).bpLength}\n\n    } else if (undefined === browser.genome.getChromosome(chr)) {\n        return undefined\n\n    } else {\n        const queryChr = browser.genome.getChromosomeName(chr)\n        const extent = {\n            chr: queryChr,\n            start: 0,\n            end: browser.genome.getChromosome(chr).bpLength\n        }\n\n        if (a.length > 1) {\n\n            let b = a[1].split('-')\n            if (b.length > 2) {\n                // Allow for negative coordinates, which is possible if showing alignment soft clips\n                if (a[1].startsWith('-')) {\n                    const i = a[1].indexOf('-', 1)\n                    if (i > 0) {\n                        const t1 = a[1].substring(0, i)\n                        const t2 = a[1].substring(i + 1)\n                        b = [t1, t2]\n                    }\n                } else {\n                    return undefined\n                }\n\n            }\n\n            let numeric\n            numeric = b[0].replace(/,/g, '')\n            if (isNaN(numeric)) {\n                return undefined\n            }\n\n            extent.start = parseInt(numeric, 10) - 1\n            extent.end = extent.start + 1\n\n            if (1 === b.length) {\n                // Don't clamp coordinates if single coordinate is supplied.\n                extent.start -= 20\n                extent.end += 20\n            }\n\n            if (2 === b.length) {\n                numeric = b[1].replace(/,/g, '')\n                if (isNaN(numeric)) {\n                    return undefined\n                } else {\n                    extent.end = parseInt(numeric, 10)\n                }\n\n                // Allow negative coordinates only if browser is softclipped, i.e. there is at least alignment track with softclipping on\n                if (extent.start < 0 && !browser.isSoftclipped()) {\n                    const delta = -extent.start\n                    extent.start += delta\n                    extent.end += delta\n                }\n            }\n        }\n\n        return extent\n    }\n}\n\nasync function searchWebService(browser, locus, searchConfig) {\n\n    let path = searchConfig.url.replace(\"$FEATURE$\", locus.toUpperCase())\n    if (path.indexOf(\"$GENOME$\") > -1) {\n        path = path.replace(\"$GENOME$\", (browser.genome.id ? browser.genome.id : \"hg19\"))\n    }\n    const options = searchConfig.timeout ? {timeout: searchConfig.timeout} : undefined\n    const result = await igvxhr.loadString(path, options)\n\n    const locusObject = processSearchResult(browser, result, searchConfig)\n    if (locusObject) {\n        locusObject.locusSearchString = locus\n    }\n    return locusObject\n}\n\nfunction processSearchResult(browser, result, searchConfig) {\n\n    let results\n\n    if ('plain' === searchConfig.type) {\n        results = parseSearchResults(browser, result)\n    } else {\n        results = JSON.parse(result)\n    }\n\n    if (searchConfig.resultsField) {\n        results = results[searchConfig.resultsField]\n    }\n\n    if (!results || 0 === results.length) {\n        return undefined\n\n    } else {\n\n        const chromosomeField = searchConfig.chromosomeField || \"chromosome\"\n        const startField = searchConfig.startField || \"start\"\n        const endField = searchConfig.endField || \"end\"\n        const coords = searchConfig.coords || 1\n\n\n        let result\n        if (Array.isArray(results)) {\n            // Ignoring all but first result for now\n            // TODO -- present all and let user select if results.length > 1\n            result = results[0]\n        } else {\n            // When processing search results from Ensembl REST API\n            // Example: https://rest.ensembl.org/lookup/symbol/macaca_fascicularis/BRCA2?content-type=application/json\n            result = results\n        }\n\n        if (!(result.hasOwnProperty(chromosomeField) && (result.hasOwnProperty(startField)))) {\n            console.error(\"Search service results must include chromosome and start fields: \" + result)\n        }\n\n        const chrResult = result[chromosomeField]\n        const chromosome = browser.genome.getChromosome(chrResult)\n        if (!chromosome) {\n            return undefined\n        }\n        const chr = chromosome.name\n\n        let start = result[startField] - coords\n        let end = result[endField]\n        if (undefined === end) {\n            end = start + 1\n        }\n\n        const locusObject = {chr, start, end}\n\n        // Some GTEX hacks\n        const type = result.type ? result.type : \"gene\"\n        if (searchConfig.geneField && type === \"gene\") {\n            locusObject.gene = result[searchConfig.geneField]\n        }\n        if (searchConfig.snpField && type === \"snp\") {\n            locusObject.snp = result[searchConfig.snpField]\n        }\n\n        return locusObject\n    }\n}\n\n/**\n * Parse the igv line-oriented (non json) search results.\n * Example\n *    EGFR    chr7:55,086,724-55,275,031    refseq\n *\n */\nfunction parseSearchResults(browser, data) {\n\n    const linesTrimmed = []\n    const results = []\n    const lines = StringUtils.splitLines(data)\n\n    lines.forEach(function (item) {\n        if (\"\" === item) {\n            // do nothing\n        } else {\n            linesTrimmed.push(item)\n        }\n    })\n\n    linesTrimmed.forEach(function (line) {\n\n        var tokens = line.split(\"\\t\"),\n            source,\n            locusTokens,\n            rangeTokens,\n            obj\n\n        if (tokens.length >= 3) {\n\n            locusTokens = tokens[1].split(\":\")\n            rangeTokens = locusTokens[1].split(\"-\")\n            source = tokens[2].trim()\n\n            obj =\n                {\n                    gene: tokens[0],\n                    chromosome: browser.genome.getChromosomeName(locusTokens[0].trim()),\n                    start: parseInt(rangeTokens[0].replace(/,/g, '')),\n                    end: parseInt(rangeTokens[1].replace(/,/g, '')),\n                    type: (\"gtex\" === source ? \"snp\" : \"gene\")\n                }\n\n            results.push(obj)\n\n        }\n\n    })\n\n    return results\n\n}\n\n\n// Export some functions for unit testing\nexport {parseLocusString, searchWebService}\n\nexport default search\n\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport $ from \"./vendor/jquery-3.3.1.slim.js\"\nimport GenomeUtils from \"./genome/genome.js\"\n\nclass NavbarManager {\n\n    constructor(browser) {\n        this.browser = browser\n    }\n\n    navbarDidResize(width) {\n        this.updateNavbar(this.createResponsiveClassSchedule(width))\n    }\n\n    updateNavbar(responsiveClassSchedule) {\n\n        this.browser.$toggle_button_container.removeClass()\n        this.browser.$toggle_button_container.addClass(responsiveClassSchedule.$toggle_button_container)\n\n        $(this.browser.zoomWidget.zoomContainer).removeClass()\n        $(this.browser.zoomWidget.zoomContainer).addClass(responsiveClassSchedule.zoomContainer)\n    }\n\n    createResponsiveClassSchedule(navbarWidth) {\n\n        let candidates = {}\n\n        const isWGV = this.browser.isMultiLocusWholeGenomeView() ||\n            (this.browser.referenceFrameList &&\n                GenomeUtils.isWholeGenomeView(this.browser.referenceFrameList[0].chr))\n\n\n        if (isWGV) {\n            this.browser.windowSizePanel.hide()\n        } else {\n            this.browser.windowSizePanel.show()\n        }\n\n        if (navbarWidth > 990) {\n            candidates.$toggle_button_container = 'igv-navbar-toggle-button-container'\n            candidates.zoomContainer = 'igv-zoom-widget'\n        } else if (navbarWidth > 860) {\n            candidates.$toggle_button_container = 'igv-navbar-toggle-button-container'\n            candidates.zoomContainer = 'igv-zoom-widget-900'\n        } else if (navbarWidth > 540) {\n            candidates.$toggle_button_container = 'igv-navbar-toggle-button-container-750'\n            candidates.zoomContainer = 'igv-zoom-widget-900'\n        } else {\n            candidates.$toggle_button_container = 'igv-navbar-toggle-button-container-750'\n            candidates.zoomContainer = 'igv-zoom-widget-900'\n            this.browser.windowSizePanel.hide()\n        }\n\n        if (isWGV) {\n            candidates['zoomContainer'] = 'igv-zoom-widget-hidden'\n        }\n\n        return candidates\n    }\n}\n\nexport default NavbarManager\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nconst ChromosomeSelectWidget = function (browser, parent) {\n\n    this.container = DOMUtils.div({class: 'igv-chromosome-select-widget-container'})\n    parent.appendChild(this.container)\n\n    this.select = document.createElement('select')\n    this.select.setAttribute('name', 'chromosome-select-widget')\n    this.container.appendChild(this.select)\n\n    this.select.addEventListener('change', () => {\n        this.select.blur()\n        if (this.select.value !== '') {\n            browser.search(this.select.value)\n        }\n    })\n\n    this.showAllChromosomes = browser.config.showAllChromosomes !== false   // i.e. default to true\n\n}\n\nChromosomeSelectWidget.prototype.show = function () {\n    this.container.style.display = 'flex'\n}\n\nChromosomeSelectWidget.prototype.hide = function () {\n    this.container.style.display = 'none'\n}\n\nChromosomeSelectWidget.prototype.update = function (genome) {\n\n    const list = this.showAllChromosomes ? genome.chromosomeNames.slice() : genome.wgChromosomeNames.slice()\n    // console.log(`${ this.showAllChromosomes ? 'Do' : 'Do not'} show all chromosomes. List ${ list }`)\n\n    if (genome.showWholeGenomeView()) {\n        list.unshift('all')\n        list.unshift('')\n    }\n\n    this.select.innerHTML = ''\n\n    for (let name of list) {\n        const option = document.createElement('option')\n        option.setAttribute('value', name)\n        option.innerText = name\n        this.select.appendChild(option)\n    }\n\n}\n\nexport default ChromosomeSelectWidget\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../node_modules/igv-ui/dist/igv-ui.js'\nimport {prettyBasePairNumber} from './util/igvUtils.js'\n\nclass WindowSizePanel {\n    constructor(parent, browser) {\n\n        this.container = DOMUtils.div({class: 'igv-windowsize-panel-container'})\n        parent.appendChild(this.container)\n\n        browser.on('locuschange', (referenceFrameList) => {\n            this.updatePanel(referenceFrameList)\n        })\n\n        this.browser = browser\n\n    }\n\n    show() {\n        this.container.style.display = 'block'\n    }\n\n    hide() {\n        this.container.style.display = 'none'\n    }\n\n    updatePanel(referenceFrameList) {\n        const width = this.browser.calculateViewportWidth(this.browser.referenceFrameList.length)\n        this.container.innerText = 1 === referenceFrameList.length ? prettyBasePairNumber(Math.round(width * referenceFrameList[0].bpPerPixel)) : ''\n    }\n}\n\nexport default WindowSizePanel\n","\nimport {DOMUtils} from \"../../node_modules/igv-ui/dist/igv-ui.js\"\n\nclass CursorGuide {\n\n    constructor(columnContainer, browser) {\n        this.browser = browser\n        this.columnContainer = columnContainer\n\n        this.horizontalGuide = DOMUtils.div({class: 'igv-cursor-guide-horizontal'})\n        columnContainer.appendChild(this.horizontalGuide)\n\n        this.verticalGuide = DOMUtils.div({class: 'igv-cursor-guide-vertical'})\n        columnContainer.appendChild(this.verticalGuide)\n\n        this.addMouseHandler(browser)\n\n        this.setVisibility(browser.config.showCursorGuide)\n\n    }\n\n    addMouseHandler(browser) {\n\n        this.boundMouseMoveHandler = mouseMoveHandler.bind(this)\n        this.columnContainer.addEventListener('mousemove', this.boundMouseMoveHandler)\n\n        function mouseMoveHandler(event) {\n\n            const {x, y} = DOMUtils.translateMouseCoordinates(event, this.columnContainer)\n            this.horizontalGuide.style.top = `${y}px`\n\n            const target = document.elementFromPoint(event.clientX, event.clientY)\n\n            const viewport = findAncestorOfClass(target, 'igv-viewport')\n\n            if (viewport && browser.getRulerTrackView()) {\n\n                this.verticalGuide.style.left = `${x}px`\n\n                const columns = browser.root.querySelectorAll('.igv-column')\n                let index = undefined\n                const viewportParent = viewport.parentElement\n                for (let i = 0; i < columns.length; i++) {\n                    if (undefined === index && viewportParent === columns[i]) {\n                        index = i\n                    }\n                }\n\n                const rulerViewport = browser.getRulerTrackView().viewports[index]\n                const result = rulerViewport.mouseMove(event)\n\n                if (result) {\n\n                    const {start, bp, end} = result\n                    const interpolant = (bp - start) / (end - start)\n\n                    if (this.customMouseHandler) {\n                        this.customMouseHandler({start, bp, end, interpolant})\n                    }\n                }\n            }\n\n        }\n    }\n\n    removeMouseHandler() {\n        this.columnContainer.removeEventListener('mousemove', this.boundMouseMoveHandler)\n    }\n\n    setVisibility(showCursorGuide) {\n        if (true === showCursorGuide) {\n            this.show()\n        } else {\n            this.hide()\n        }\n    }\n\n    show() {\n        this.verticalGuide.style.display = 'block'\n        this.horizontalGuide.style.display = 'block'\n\n    }\n\n    hide() {\n\n        this.verticalGuide.style.display = 'none'\n        this.horizontalGuide.style.display = 'none'\n\n        if (this.browser.getRulerTrackView()) {\n            for (let viewport of this.browser.getRulerTrackView().viewports) {\n                viewport.$tooltip.hide()\n            }\n        }\n\n    }\n\n}\n\n/**\n * Walk up the tree until a parent is found with the given classname.  If no ancestor is found return undefined.\n * @param target\n * @param classname\n * @returns {*}\n */\nfunction findAncestorOfClass(target, classname) {\n\n    while (target.parentElement) {\n        if (target.parentElement.classList.contains(classname)) {\n            return target.parentElement\n        } else {\n            target = target.parentElement\n        }\n    }\n    return undefined\n\n}\n\n\nexport default CursorGuide\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass CursorGuideButton {\n\n    constructor(browser, parent) {\n\n        this.browser = browser\n\n        this.button = DOMUtils.div({class: 'igv-navbar-button'})\n        parent.appendChild(this.button)\n\n        this.button.textContent = 'cursor guide'\n\n        this.button.addEventListener('click', () => {\n            browser.cursorGuideVisible = !browser.cursorGuideVisible\n            browser.setCursorGuideVisibility(browser.cursorGuideVisible)\n            this.setButtonState(browser.cursorGuideVisible)\n        })\n\n        this.setButtonState(browser.cursorGuideVisible)\n\n        if (browser.config.showCursorTrackingGuideButton) {\n            this.show()\n        } else {\n            this.hide()\n        }\n\n    }\n\n    setButtonState(cursorGuideVisible) {\n        if (true === cursorGuideVisible) {\n            this.button.classList.add('igv-navbar-button-clicked')\n        } else {\n            this.button.classList.remove('igv-navbar-button-clicked')\n        }\n    }\n\n    show() {\n        this.button.style.display = 'block'\n        this.setButtonState(this.browser.cursorGuideVisible)\n    }\n\n    hide() {\n        this.button.style.display = 'none'\n    }\n}\n\nexport default CursorGuideButton\n","import {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass CenterLineButton {\n\n    constructor(browser, parent) {\n\n        this.browser = browser\n\n        this.button = DOMUtils.div({class: 'igv-navbar-button'})\n        parent.appendChild(this.button)\n\n        this.button.textContent = 'center line'\n\n        this.button.addEventListener('click', () => {\n            browser.isCenterLineVisible = !browser.isCenterLineVisible\n            browser.setCenterLineVisibility(browser.isCenterLineVisible)\n            this.setButtonState(browser.isCenterLineVisible)\n        })\n\n        this.setButtonState(browser.isCenterLineVisible)\n\n        if (browser.config.showCenterGuideButton) {\n            this.show()\n        } else {\n            this.hide()\n        }\n    }\n\n    setButtonState(isCenterLineVisible) {\n        if (true === isCenterLineVisible) {\n            this.button.classList.add('igv-navbar-button-clicked')\n        } else {\n            this.button.classList.remove('igv-navbar-button-clicked')\n        }\n    }\n\n    show() {\n        this.isVisible = true\n        this.button.style.display = 'block'\n        this.setButtonState(this.browser.isCenterLineVisible)\n    }\n\n    hide() {\n        this.isVisible = false\n        this.button.style.display = 'none'\n    }\n}\n\nexport default CenterLineButton\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass TrackLabelControl {\n\n    constructor(parent, browser) {\n\n        this.button = DOMUtils.div({class: 'igv-navbar-button'})\n        parent.appendChild(this.button)\n        this.button.textContent = 'track labels'\n\n        this.button.addEventListener('click', () => {\n            browser.trackLabelsVisible = !browser.trackLabelsVisible\n            this.setState(browser.trackLabelsVisible)\n            browser.setTrackLabelVisibility(browser.trackLabelsVisible)\n        })\n\n        this.browser = browser\n\n        this.setVisibility(browser.config.showTrackLabelButton)\n\n        this.setState(browser.trackLabelsVisible)\n    }\n\n    setVisibility(showTrackLabelButton) {\n        if (true === showTrackLabelButton) {\n            this.show()\n        } else {\n            this.hide()\n        }\n    }\n\n    setState(trackLabelsVisible) {\n        if (true === trackLabelsVisible) {\n            this.button.classList.add('igv-navbar-button-clicked')\n        } else {\n            this.button.classList.remove('igv-navbar-button-clicked')\n        }\n    }\n\n    show() {\n        this.button.style.display = 'block'\n        this.setState(this.browser.trackLabelsVisible)\n    }\n\n    hide() {\n        this.button.style.display = 'none'\n    }\n}\n\nexport default TrackLabelControl\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass SampleNameControl {\n\n    constructor(parent, browser) {\n\n        this.button = DOMUtils.div({class: 'igv-navbar-button'})\n        parent.appendChild(this.button)\n\n        this.button.innerText = 'Sample Names'\n\n        this.setState(browser.showSampleNames)\n\n        this.setVisibility(browser.showSampleNameButton)\n\n        this.button.addEventListener('click', () => {\n\n            browser.showSampleNames = !browser.showSampleNames\n\n            this.setState(browser.showSampleNames)\n\n            for (let {sampleNameViewport} of browser.trackViews) {\n                if (false === browser.showSampleNames) {\n                    sampleNameViewport.hide()\n                } else {\n                    sampleNameViewport.show()\n                }\n            }\n\n            browser.layoutChange()\n\n\n        })\n\n    }\n\n    setVisibility(showSampleNameButton) {\n\n        if (true === showSampleNameButton) {\n            this.show()\n        } else {\n            this.hide()\n        }\n    }\n\n    setState(showSampleNames) {\n        if (true === showSampleNames) {\n            this.button.classList.add('igv-navbar-button-clicked')\n        } else {\n            this.button.classList.remove('igv-navbar-button-clicked')\n        }\n    }\n\n    hide() {\n        this.button.style.display = 'none'\n    }\n\n    show() {\n        this.button.style.display = 'block'\n    }\n\n}\n\nexport default SampleNameControl\n","import {DOMUtils, Icon} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nconst sliderMin = 0\nlet sliderMax = 23\nlet sliderValueRaw = 0\n\nconst ZoomWidget = function (browser, parent) {\n\n    this.browser = browser\n\n    this.zoomContainer = DOMUtils.div({class: 'igv-zoom-widget'})\n    parent.appendChild(this.zoomContainer)\n\n    // zoom out\n    this.zoomOutButton = DOMUtils.div()\n    this.zoomContainer.appendChild(this.zoomOutButton)\n    this.zoomOutButton.appendChild(Icon.createIcon('minus-circle'))\n    this.zoomOutButton.addEventListener('click', () => {\n        // browser.zoomWithScaleFactor(2.0)\n        browser.zoomOut()\n    })\n\n    // Range slider\n    const el = DOMUtils.div()\n    this.zoomContainer.appendChild(el)\n    this.slider = document.createElement('input')\n    this.slider.type = 'range'\n\n    this.slider.min = `${sliderMin}`\n    this.slider.max = `${sliderMax}`\n\n    el.appendChild(this.slider)\n\n    this.slider.addEventListener('change', e => {\n\n        e.preventDefault()\n        e.stopPropagation()\n\n        const referenceFrame = browser.referenceFrameList[0]\n        const {bpLength} = referenceFrame.genome.getChromosome(referenceFrame.chr)\n        const {end, start} = referenceFrame\n\n        const extent = end - start\n\n        // bpLength/(end - start)\n        const scaleFactor = Math.pow(2, e.target.valueAsNumber)\n\n        // (end - start) = bpLength/scaleFactor\n        const zoomedExtent = bpLength / scaleFactor\n\n        // console.log(`zoom-widget - slider ${ e.target.value } scaleFactor ${ scaleFactor } extent-zoomed ${ StringUtils.numberFormatter(Math.round(zoomedExtent)) }`)\n\n        browser.zoomWithScaleFactor(zoomedExtent / extent)\n\n    })\n\n    // zoom in\n    this.zoomInButton = DOMUtils.div()\n    this.zoomContainer.appendChild(this.zoomInButton)\n    this.zoomInButton.appendChild(Icon.createIcon('plus-circle'))\n    this.zoomInButton.addEventListener('click', () => {\n        // browser.zoomWithScaleFactor(0.5)\n        browser.zoomIn()\n    })\n\n    browser.on('locuschange', (referenceFrameList) => {\n\n        if (this.browser.isMultiLocusMode()) {\n            this.disable()\n        } else {\n            this.enable()\n            this.update(referenceFrameList)\n        }\n\n    })\n\n}\n\nZoomWidget.prototype.update = function (referenceFrameList) {\n\n    const referenceFrame = referenceFrameList[0]\n    const {bpLength} = referenceFrame.genome.getChromosome(referenceFrame.chr)\n    const {start, end} = referenceFrame\n\n    sliderMax = Math.ceil(Math.log2(bpLength / this.browser.minimumBases()))\n\n    this.slider.max = `${sliderMax}`\n\n    const scaleFactor = bpLength / (end - start)\n    sliderValueRaw = Math.log2(scaleFactor)\n    this.slider.value = `${Math.round(sliderValueRaw)}`\n\n    const extent = end - start\n\n    const derivedScalefactor = Math.pow(2, sliderValueRaw)\n\n    const derivedExtent = bpLength / derivedScalefactor\n\n    // referenceFrame.description('zoom.update')\n\n    // console.log(`${ Date.now() } update - slider ${ this.slider.value } scaleFactor ${ Math.round(scaleFactor) } extent ${ StringUtils.numberFormatter(Math.round(extent)) }`)\n\n    // console.log(`update - sliderMin ${ sliderMin } sliderValue ${ this.slider.value } sliderMax ${ sliderMax } scaleFactor ${ scaleFactor.toFixed(3) } derived-scaleFactor ${ derivedScalefactor.toFixed(3) }`)\n\n}\n\nZoomWidget.prototype.enable = function () {\n\n    // this.zoomInButton.style.color = appleCrayonPalette[ 'steel' ];\n    // this.zoomInButton.style.pointerEvents = 'auto';\n    //\n    // this.zoomOutButton.style.color = appleCrayonPalette[ 'steel' ];\n    // this.zoomOutButton.style.pointerEvents = 'auto';\n\n    this.slider.disabled = false\n}\n\nZoomWidget.prototype.disable = function () {\n\n    // this.zoomInButton.style.color = appleCrayonPalette[ 'silver' ];\n    // this.zoomInButton.style.pointerEvents = 'none';\n    //\n    // this.zoomOutButton.style.color = appleCrayonPalette[ 'silver' ];\n    // this.zoomOutButton.style.pointerEvents = 'none';\n\n    this.slider.disabled = true\n}\n\nZoomWidget.prototype.hide = function () {\n    this.zoomContainer.style.display = 'none'\n}\n\nZoomWidget.prototype.show = function () {\n    this.zoomContainer.style.display = 'block'\n}\n\nZoomWidget.prototype.hideSlider = function () {\n    this.slider.style.display = 'none'\n}\n\nZoomWidget.prototype.showSlider = function () {\n    this.slider.style.display = 'block'\n}\n\nfunction lerpAlvyRaySmith(a, b, t) {\n    return a - t * (a - b)\n}\n\nexport default ZoomWidget\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nconst SVGSaveControl = function (parent, browser) {\n    const button = DOMUtils.div({class: 'igv-navbar-button'})\n    parent.append(button)\n\n    button.textContent = 'Save SVG'\n    button.addEventListener('click', () => browser.saveSVGtoFile({}))\n}\n\nexport default SVGSaveControl\n","import {DOMUtils} from '../node_modules/igv-ui/dist/igv-ui.js'\nimport {createColumn, insertElementAfter, insertElementBefore} from './util/igvUtils.js'\n\nconst viewportColumnManager =\n    {\n        createColumns: (columnContainer, count) => {\n\n            for (let i = 0; i < count; i++) {\n                if (0 === i) {\n                    createColumn(columnContainer, 'igv-column')\n                } else {\n                    columnContainer.appendChild(DOMUtils.div({class: 'igv-column-shim'}))\n                    createColumn(columnContainer, 'igv-column')\n                }\n            }\n\n        },\n\n        removeColumnAtIndex: (i, column) => {\n            const shim = 0 === i ? column.nextElementSibling : column.previousElementSibling\n            column.remove()\n            shim.remove()\n        },\n\n        insertAfter: referenceElement => {\n\n            const shim = DOMUtils.div({class: 'igv-column-shim'})\n            insertElementAfter(shim, referenceElement)\n\n            const column = DOMUtils.div({class: 'igv-column'})\n            insertElementAfter(column, shim)\n\n            return column\n        },\n\n        insertBefore: (referenceElement, count) => {\n\n            for (let i = 0; i < count; i++) {\n\n                const column = DOMUtils.div({class: 'igv-column'})\n                insertElementBefore(column, referenceElement)\n\n                if (count > 1 && i > 0) {\n                    const columnShim = DOMUtils.div({class: 'igv-column-shim'})\n                    insertElementBefore(columnShim, column)\n                }\n\n            }\n\n        },\n\n        indexOfColumn: (columnContainer, column) => {\n\n            const allColumns = columnContainer.querySelectorAll('.igv-column')\n\n            for (let i = 0; i < allColumns.length; i++) {\n                const c = allColumns[ i ]\n                if (c === column) {\n                    return i\n                }\n            }\n\n            return undefined\n        },\n    }\n\nexport {viewportColumnManager}\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass ViewportCenterLine {\n\n    constructor(browser, referenceFrame, column) {\n\n        this.browser = browser\n        this.referenceFrame = referenceFrame\n        this.column = column\n\n        this.container = DOMUtils.div({class: 'igv-center-line'})\n        column.appendChild(this.container)\n\n        if (browser.isCenterLineVisible) {\n            this.show()\n        } else {\n            this.hide()\n        }\n    }\n\n    repaint() {\n\n        if (this.referenceFrame) {\n\n            const ppb = 1.0 / this.referenceFrame.bpPerPixel\n            if (ppb > 1) {\n                const width = Math.floor(this.referenceFrame.toPixels(1))\n                this.container.style.width = `${width}px`\n                this.container.classList.remove('igv-center-line-thin')\n                this.container.classList.add('igv-center-line-wide')\n            } else {\n                this.container.style.width = '1px'\n                this.container.classList.remove('igv-center-line-wide')\n                this.container.classList.add('igv-center-line-thin')\n            }\n        }\n    }\n\n    show() {\n        this.isVisible = true\n        this.container.style.display = 'block'\n        this.repaint()\n    }\n\n    hide() {\n        this.isVisible = false\n        this.container.style.display = 'none'\n    }\n\n    resize() {\n        this.repaint()\n    }\n}\n\nexport default ViewportCenterLine\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport IGVGraphics from \"./igv-canvas.js\"\nimport {IGVColor, StringUtils} from \"../node_modules/igv-utils/src/index.js\"\nimport GenomeUtils from \"./genome/genome.js\"\n\nconst numberFormatter = StringUtils.numberFormatter\n\nclass RulerTrack {\n    constructor(browser) {\n\n        this.browser = browser\n        this.height = 40\n        this.name = \"\"\n        this.id = \"ruler\"\n        this.disableButtons = true\n        this.ignoreTrackMenu = true\n        this.order = Number.MIN_SAFE_INTEGER * 1e-2\n        this.removable = false\n        this.type = 'ruler'\n    }\n\n    async getFeatures(chr, start, end) {\n        return []\n    };\n\n    computePixelHeight(ignore) {\n        return this.height\n    };\n\n    draw({context, referenceFrame, pixelWidth, pixelHeight, bpPerPixel, bpStart}) {\n\n        if (GenomeUtils.isWholeGenomeView(referenceFrame.chr)) {\n            this.drawWholeGenome({context, pixelWidth, pixelHeight, bpPerPixel})\n        } else {\n            this.doDraw({context, referenceFrame, pixelWidth, pixelHeight, bpStart})\n        }\n    }\n\n    drawWholeGenome({context, pixelWidth, pixelHeight, bpPerPixel}) {\n\n        context.save()\n\n        IGVGraphics.fillRect(context, 0, 0, pixelWidth, pixelHeight, {'fillStyle': 'white'})\n\n        for (let name of this.browser.genome.wgChromosomeNames) {\n\n            let xBP = this.browser.genome.getCumulativeOffset(name)\n            let wBP = this.browser.genome.getChromosome(name).bpLength\n\n            let x = Math.round(xBP / bpPerPixel)\n            let w = Math.round(wBP / bpPerPixel)\n\n            this.renderChromosomeRect(context, x, 0, w, pixelHeight, name)\n        }\n\n        context.restore()\n\n    }\n\n    doDraw({context, referenceFrame, pixelWidth, pixelHeight, bpStart}) {\n\n        context.clearRect(0, 0, pixelWidth, pixelHeight)\n\n        const tickHeight = 6\n        const shim = 2\n\n        const bpLength = Math.floor(referenceFrame.toBP(pixelWidth))\n        const tick = findSpacing(bpLength, context.isSVG)\n\n        let nTick = Math.floor(bpStart / tick.majorTick) - 1\n\n        const {tickDelta, labelLength} = calculateDeltas(context, referenceFrame, bpStart, nTick, tick)\n\n        const index = this.browser.referenceFrameList.indexOf(referenceFrame)\n        // console.log(`ruler(${ index }) label-length ${ labelLength > tickDelta ? 'clobbers' : 'less than' } tick-delta ${ StringUtils.numberFormatter(tickDelta)} `)\n\n        let xTick\n        let bp\n        let accumulatedTickDelta = tickDelta\n        const labelLengthShim = 0.25 * labelLength\n        do {\n\n            bp = Math.floor(nTick * tick.majorTick)\n            const rulerLabel = `${StringUtils.numberFormatter(Math.floor(bp / tick.unitMultiplier))} ${tick.majorUnit}`\n\n            xTick = Math.round(referenceFrame.toPixels((bp - 1) - bpStart + 0.5))\n            const xLabel = Math.round(xTick - context.measureText(rulerLabel).width / 2)\n\n            if (xLabel > 0 && (labelLengthShim + labelLength) <= accumulatedTickDelta) {\n                IGVGraphics.fillText(context, rulerLabel, xLabel, this.height - (tickHeight / 0.75))\n                accumulatedTickDelta = 0\n            }\n\n            if (xTick > 0) {\n                IGVGraphics.strokeLine(context, xTick, this.height - tickHeight, xTick, this.height - shim)\n            }\n\n            bp = Math.floor((1 + nTick) * tick.majorTick)\n            let pixel = Math.round(referenceFrame.toPixels((bp - 1) - bpStart + 0.5))\n            let delta = (pixel - xTick) / 2\n            let xx = xTick + delta\n            if (xx > 0) {\n                IGVGraphics.strokeLine(context, xx, this.height - tickHeight, xx, this.height - shim)\n            }\n\n            ++nTick\n            accumulatedTickDelta += tickDelta\n\n        } while (xTick < pixelWidth)\n\n        IGVGraphics.strokeLine(context, 0, this.height - shim, pixelWidth, this.height - shim)\n\n    }\n\n    renderChromosomeRect(ctx, x, y, w, h, name) {\n\n        ctx.textAlign = 'center'\n        ctx.textBaseline = 'middle'\n        ctx.font = '12px sans-serif'\n\n        IGVGraphics.strokeLine(ctx, x + w, y, x + w, y + h, {strokeStyle: IGVColor.greyScale(191)})\n\n        const shortName = (name.startsWith(\"chr\")) ? name.substring(3) : name\n\n        if (w > ctx.measureText(shortName).width) {\n            IGVGraphics.fillText(ctx, shortName, (x + (w / 2)), (y + (h / 2)), {fillStyle: IGVColor.greyScale(68)})\n        }\n    }\n\n    get supportsWholeGenome() {\n        return true\n    };\n\n    dispose() {\n        // do stuff\n    }\n}\n\nfunction findSpacing(bpLength, isSVG) {\n\n    if (bpLength < 10) {\n        return new Tick(1, 'bp', 1)\n    }\n\n    const nZeroes = Math.floor(Math.log10(bpLength))\n\n    let majorUnit = 'bp'\n    let unitMultiplier = 1\n\n    if (nZeroes > 9) {\n        majorUnit = 'gb'\n        unitMultiplier = 1e9\n    } else if (nZeroes > 6) {\n        majorUnit = 'mb'\n        unitMultiplier = 1e6\n    } else if (nZeroes > 3) {\n        majorUnit = 'kb'\n        unitMultiplier = 1e3\n    }\n\n    const denom = Math.pow(10, nZeroes - 1)\n    const nMajorTicks = bpLength / denom\n\n    // const threshold = 25\n    const threshold = 3 * 25\n\n    const belowThresholdTick = Math.pow(10, nZeroes - 1)\n    const aboveThresholdTick = Math.pow(10, nZeroes) / 2\n\n    // console.log(`zeros ${ nZeroes } tick-threshold ${ threshold } ticks ${ nMajorTicks } belowTick ${ StringUtils.numberFormatter(belowThresholdTick) } aboveTick ${ StringUtils.numberFormatter(aboveThresholdTick) }`)\n\n    const majorTick = (nMajorTicks < threshold && isSVG !== true) ? belowThresholdTick : aboveThresholdTick\n\n    return new Tick(majorTick, majorUnit, unitMultiplier)\n}\n\nfunction calculateDeltas(context, referenceFrame, bpStart, nTick, tick) {\n\n    const tickDelta = getX(referenceFrame, getBP(1 + nTick, tick), bpStart) - getX(referenceFrame, getBP(nTick, tick), bpStart)\n\n    const label = `${StringUtils.numberFormatter(Math.floor(getBP(nTick, tick) / tick.unitMultiplier))} ${tick.majorUnit}`\n    const labelLength = Math.floor(context.measureText(label).width)\n\n    return {tickDelta, labelLength}\n\n    function getBP(nTick, tick) {\n        return Math.floor(nTick * tick.majorTick)\n    }\n\n    function getX(referenceFrame, bp, bpStart) {\n        return Math.round(referenceFrame.toPixels((bp - 1) - bpStart + 0.5))\n    }\n}\n\nclass Tick {\n\n    constructor(majorTick, majorUnit, unitMultiplier) {\n        this.majorTick = majorTick\n        this.minorTick = majorTick / 10.0\n        this.majorUnit = majorUnit\n        this.unitMultiplier = unitMultiplier\n    }\n\n    description(blurb) {\n        console.log((blurb || '') + ' tick ' + numberFormatter(this.majorTick) + ' label width ' + numberFormatter(this.labelWidthBP) + ' multiplier ' + this.unitMultiplier)\n    }\n}\n\nexport default RulerTrack\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nconst CircularViewControl = function (parent, browser) {\n\n    this.button = DOMUtils.div({class: 'igv-navbar-button'})\n    parent.appendChild(this.button)\n    this.button.textContent = 'circular view'\n\n    this.button.addEventListener('click', () => {\n        browser.circularViewVisible = !browser.circularViewVisible\n        //this.setState(browser.circularViewVisible)\n    })\n\n    this.browser = browser\n\n    this.setVisibility(browser.config.showCircularViewButton)\n\n    this.setState(browser.circularViewVisible)\n\n}\n\nCircularViewControl.prototype.setVisibility = function (showCircularViewButton) {\n    if (true === showCircularViewButton) {\n        this.show()\n    } else {\n        this.hide()\n    }\n}\n\nCircularViewControl.prototype.setState = function (circularViewVisible) {\n    if (true === circularViewVisible) {\n        this.button.classList.add('igv-navbar-button-clicked')\n    } else {\n        this.button.classList.remove('igv-navbar-button-clicked')\n    }\n}\n\nCircularViewControl.prototype.show = function () {\n    this.button.style.display = 'block'\n    this.setState(this.browser.circularViewVisible)\n}\n\nCircularViewControl.prototype.hide = function () {\n    this.button.style.display = 'none'\n}\n\nexport default CircularViewControl\n","/**\n * User supplied button for the navbar\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nconst CustomButton = function (parent, browser, b) {\n\n    const button = DOMUtils.div({class: 'igv-navbar-button'})\n    parent.append(button)\n    button.textContent = b.label\n    button.addEventListener('click', () => b.callback(browser))\n}\n\nexport default CustomButton\n","import {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\nimport ROISet, {screenCoordinates} from './ROISet.js'\nimport {Popover} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass ROIManager {\n\n    constructor(browser, roiMenu, roiTable, top, roiSets) {\n\n        this.browser = browser\n        this.roiMenu = roiMenu\n        this.roiTable = roiTable\n        this.top = top\n        this.roiSets = roiSets || []\n        this.boundLocusChangeHandler = locusChangeHandler.bind(this)\n        browser.on('locuschange', this.boundLocusChangeHandler)\n\n    }\n\n    async initialize() {\n\n        if (this.roiSets.length > 0) {\n            this.browser.showROITableButton = true\n            this.browser.roiTableControl.setVisibility(this.browser.showROITableButton)\n        }\n\n        const promises = this.roiSets.map(roiSet => this.renderROISet({\n            browser: this.browser,\n            pixelTop: this.top,\n            roiSet\n        }))\n\n        if (promises.length > 0) {\n            await Promise.all(promises)\n        }\n\n        const records = await this.getTableRecords()\n        this.roiTable.renderTable(records)\n\n    }\n\n    async loadROI(config, genome) {\n\n        const configs = Array.isArray(config) ? config : [config]\n\n        for (let c of configs) {\n            this.roiSets.push(new ROISet(c, genome))\n        }\n\n        await this.initialize()\n\n    }\n\n    clearROIs() {\n\n        this.roiTable.clearTable()\n\n        const elements = this.browser.columnContainer.querySelectorAll('.igv-roi-region')\n        for (let el of elements) {\n            el.remove()\n        }\n\n        for (let roiSet of this.roiSets) {\n            roiSet.dispose()\n        }\n\n        this.roiSets = []\n\n    }\n\n    async getTableRecords() {\n\n        const records = []\n\n        for (let roiSet of this.roiSets) {\n            const setName = roiSet.isUserDefined ? '' : (roiSet.name || '')\n            const allFeatures = await roiSet.getAllFeatures()\n            for (let chr of Object.keys(allFeatures)) {\n                for (let feature of allFeatures[chr]) {\n                    records.push({setName, feature})\n                }\n            }\n        }\n\n        return records\n    }\n\n    presentTable() {\n        this.roiTable.present()\n    }\n\n    async repaintTable() {\n        const records = await this.getTableRecords()\n        this.roiTable.renderTable(records)\n    }\n\n    dismissTable() {\n        this.roiTable.dismiss()\n    }\n\n    async updateUserDefinedROISet(feature) {\n\n        let userDefinedROISet = await this.getUserDefinedROISet()\n\n        if (undefined === userDefinedROISet) {\n            userDefinedROISet = this.initializeUserDefinedROISet()\n        }\n\n        userDefinedROISet.addFeature(feature)\n\n        if (false === this.browser.showROITableButton) {\n            this.setROITableButtonVisibility(true)\n        }\n\n        await this.renderROISet({browser: this.browser, pixelTop: this.top, roiSet: userDefinedROISet})\n\n        const records = await this.getTableRecords()\n        this.roiTable.renderTable(records)\n    }\n\n    setROITableButtonVisibility(isVisible) {\n        this.browser.showROITableButton = isVisible\n        this.browser.roiTableControl.setVisibility(this.browser.showROITableButton)\n    }\n\n    async renderAllROISets() {\n\n        for (let roiSet of this.roiSets) {\n            await this.renderROISet({browser: this.browser, pixelTop: this.top, roiSet})\n        }\n    }\n\n    async renderROISet({browser, pixelTop, roiSet}) {\n\n        const columns = browser.columnContainer.querySelectorAll('.igv-column')\n\n        for (let i = 0; i < columns.length; i++) {\n\n            let {chr, start: viewStart, end: viewEnd, bpPerPixel} = browser.referenceFrameList[i]\n\n            const elements = columns[i].querySelectorAll('.igv-roi-region')\n            for (let el of elements) {\n                const regionKey = el.dataset.region\n                const {chr: regionChr, start: regionStart, end: regionEnd} = parseRegionKey(regionKey)\n                if (regionChr !== chr || regionEnd < viewStart || regionStart > viewEnd) {\n                    el.remove()\n                }\n            }\n\n            const features = await roiSet.getFeatures(chr, viewStart, viewEnd)\n\n            if (features) {\n\n                for (let feature of features) {\n\n                    const regionKey = createRegionKey(chr, feature.start, feature.end)\n\n                    const {\n                        x: pixelX,\n                        width: pixelWidth\n                    } = screenCoordinates(Math.max(viewStart, feature.start), Math.min(viewEnd, feature.end), viewStart, bpPerPixel)\n\n\n                    const el = columns[i].querySelector(createSelector(regionKey))\n\n                    if (el) {\n                        el.style.left = `${pixelX}px`\n                        el.style.width = `${pixelWidth}px`\n\n                    } else {\n                        const element = this.createRegionElement(browser.columnContainer, pixelTop, pixelX, pixelWidth, roiSet, regionKey, feature.name)\n                        columns[i].appendChild(element)\n                    }\n                }\n            }\n        }\n    }\n\n    createRegionElement(columnContainer, pixelTop, pixelX, pixelWidth, roiSet, regionKey, name) {\n\n        const regionElement = DOMUtils.div({class: 'igv-roi-region'})\n\n        regionElement.style.top = `${pixelTop}px`\n        regionElement.style.left = `${pixelX}px`\n        regionElement.style.width = `${pixelWidth}px`\n        regionElement.style.backgroundColor = roiSet.color\n        regionElement.dataset.region = regionKey\n\n        const header = DOMUtils.div()\n        regionElement.appendChild(header)\n\n        header.style.backgroundColor = roiSet.headerColor\n\n        if (true === roiSet.isUserDefined) {\n            header.addEventListener('click', event => {\n                event.preventDefault()\n                event.stopPropagation()\n\n                const {x, y} = DOMUtils.translateMouseCoordinates(event, columnContainer)\n                this.roiMenu.present(x, y, this, columnContainer, regionElement)\n            })\n        } else if (name) {\n            header.addEventListener('click', event => {\n                event.preventDefault()\n                event.stopPropagation()\n                if (this.popover) {\n                    this.popover.dispose()\n                }\n                this.popover = new Popover(columnContainer, roiSet.name)\n                this.popover.presentContentWithEvent(event, name)\n            })\n        } else {\n            header.style.pointerEvents = 'none'\n        }\n\n        return regionElement\n    }\n\n    renderSVGContext(context, {deltaX, deltaY}) {\n\n        for (const regionElement of document.querySelectorAll('.igv-roi-region')) {\n\n            // body\n            const { x, y, width, height } = regionElement.getBoundingClientRect()\n            context.fillStyle = regionElement.style.backgroundColor\n            context.fillRect(x+deltaX, y+deltaY, width, height)\n\n            // header\n            const header = regionElement.querySelector('div')\n            const { x:xx, y:yy, width:ww, height:hh } = header.getBoundingClientRect()\n            context.fillStyle = header.style.backgroundColor\n            context.fillRect(xx+deltaX, yy+deltaY, ww, hh)\n        }\n    }\n\n    async getUserDefinedROISet() {\n        return this.roiSets.find(roiSet => true === roiSet.isUserDefined)\n    }\n\n    initializeUserDefinedROISet() {\n\n        const config =\n            {\n                isUserDefined: true,\n                features: []\n            }\n        const userDefinedROISet = new ROISet(config, this.browser.genome)\n        this.roiSets.push(userDefinedROISet)\n\n        return userDefinedROISet\n    }\n\n    async deleteUserDefinedRegionWithKey(regionKey, columnContainer) {\n\n        columnContainer.querySelectorAll(createSelector(regionKey)).forEach(node => node.remove())\n\n        const feature = await this.findUserDefinedRegionWithKey(regionKey)\n\n        const set = await this.getUserDefinedROISet()\n\n        if (set) {\n            set.removeFeature(feature)\n        }\n\n        const records = await this.getTableRecords()\n\n        if (0 === records.length) {\n            this.browser.roiTableControl.buttonHandler(false)\n            this.setROITableButtonVisibility(false)\n        }\n\n    }\n\n    async findUserDefinedRegionWithKey(regionKey) {\n\n        const {chr, start, end} = parseRegionKey(regionKey)\n        const set = await this.getUserDefinedROISet()\n\n        if (set) {\n            const features = await set.getFeatures(chr, start, end)\n\n            for (let feature of features) {\n                if (feature.chr === chr && feature.start >= start && feature.end <= end) {\n                    return feature\n                }\n            }\n        }\n\n        return undefined\n    }\n\n    toJSON() {\n        return this.roiSets.map(roiSet => roiSet.toJSON())\n    }\n\n    dispose() {\n\n        this.browser.off('locuschange', this.boundLocusChangeHandler)\n\n        const removable = this.browser.columnContainer.querySelectorAll('.igv-roi-region')\n\n        for (let el of removable) {\n            el.remove()\n        }\n\n        if (this.roiMenu) {\n            this.roiMenu.dispose()\n        }\n\n        if (this.roiTable) {\n            this.roiTable.dispose()\n        }\n\n        for (let roiSet of this.roiSets) {\n            roiSet.dispose()\n        }\n\n        for (let key of Object.keys(this)) {\n            this[key] = undefined\n        }\n\n    }\n}\n\nfunction locusChangeHandler() {\n    this.renderAllROISets()\n}\n\nfunction createRegionKey(chr, start, end) {\n    return `${chr}-${start}-${end}`\n}\n\nfunction createSelector(regionKey) {\n    return `[data-region=\"${regionKey}\"]`\n}\n\nfunction parseRegionKey(regionKey) {\n    let [chr, ss, ee] = regionKey.split('-')\n    ss = parseInt(ss)\n    ee = parseInt(ee)\n\n    return {chr, start: ss, end: ee, locus: `${chr}:${ss}-${ee}`, bedRecord: `${chr}\\t${ss}\\t${ee}`}\n}\n\nexport {createRegionKey, parseRegionKey}\n\nexport default ROIManager\n","import { DOMUtils } from '../../node_modules/igv-ui/dist/igv-ui.js'\nimport { StringUtils } from '../../node_modules/igv-utils/src/index.js'\n\nimport { createRegionKey, parseRegionKey } from './ROIManager.js'\nimport RegionTableBase from '../ui/regionTableBase.js'\n\nclass ROITable extends RegionTableBase {\n    constructor(config) {\n\n        const cooked = Object.assign({ 'width':'512px' }, config)\n        super(cooked)\n    }\n\n    tableRowDOM(record) {\n\n        const dom = DOMUtils.div({ class: 'igv-roi-table-row' })\n\n        const { setName, feature } = record\n        dom.dataset.region = createRegionKey(feature.chr, feature.start, feature.end)\n\n        let strings =\n            [\n                feature.chr,\n                StringUtils.numberFormatter(feature.start),\n                StringUtils.numberFormatter(feature.end),\n                feature.name || '',\n                setName\n            ];\n\n        if (4 === this.columnFormat.length) {\n            strings = strings.slice(0, 4)\n        }\n\n        for (let i = 0; i < strings.length; i++) {\n            const el = DOMUtils.div()\n            dom.appendChild(el)\n            el.style.width = this.columnFormat[ i ].width\n            el.innerText = strings[ i ]\n        }\n\n        this.tableRowDOMHelper(dom)\n\n        return dom\n    }\n\n    renderTable(records) {\n\n        Array.from(this.tableRowContainer.querySelectorAll('.igv-roi-table-row')).forEach(el => el.remove())\n\n        if (records.length > 0) {\n\n            const sortedRecords = records.sort((a, b) => (a.feature.chr.localeCompare(b.feature.chr) || a.feature.start - b.feature.start || a.feature.end - b.feature.end))\n\n            for (let record of sortedRecords) {\n                const row = this.tableRowDOM(record)\n                this.tableRowContainer.appendChild(row)\n            }\n\n        }\n    }\n\n    dispose() {\n\n        document.removeEventListener('click', this.boundGotoButtonHandler)\n\n        this.browser.roiTableControl.buttonHandler(false)\n        super.dispose()\n    }\n\n    static getColumnFormatConfiguration(doIncludeROISetNames) {\n\n        if (true === doIncludeROISetNames) {\n\n            return [\n                    { label: 'Chr', width: '20%' },\n                    { label: 'Start', width: '15%' },\n                    { label: 'End', width: '15%' },\n                    { label: 'Description', width: '30%' },\n                    { label: 'ROI Set', width: '20%' }\n                ]\n        } else {\n            return [\n                    { label: 'Chr', width: '25%' },\n                    { label: 'Start', width: '20%' },\n                    { label: 'End', width: '20%' },\n                    { label: 'Description', width: '35%' }\n                ]\n        }\n\n    }\n\n    static gotoButtonHandler (event) {\n\n        event.stopPropagation()\n\n        const selected = this.tableDOM.querySelectorAll('.igv-roi-table-row-selected')\n        const loci = []\n        for (let el of selected) {\n            const { locus } = parseRegionKey(el.dataset.region)\n            loci.push(locus)\n        }\n\n        for (let el of this.tableDOM.querySelectorAll('.igv-roi-table-row')) {\n            el.classList.remove('igv-roi-table-row-selected')\n        }\n\n        this.setTableRowSelectionState(false)\n\n        if (loci.length > 0) {\n            this.browser.search(loci.join(' '))\n        }\n\n    }\n\n}\nexport default ROITable\n","import { DOMUtils, UIUtils } from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass ROIMenu {\n    constructor(browser, parent) {\n\n        this.browser = browser\n\n        // container\n        this.container = DOMUtils.div({ class: 'igv-roi-menu-next-gen' })\n        parent.appendChild(this.container)\n\n        // header\n        const header = DOMUtils.div()\n        this.container.appendChild(header)\n\n        UIUtils.attachDialogCloseHandlerWithParent(header, () => this.container.style.display = 'none')\n\n        // body\n        this.body = DOMUtils.div()\n        this.container.appendChild(this.body)\n\n        this.container.style.display = 'none'\n\n    }\n\n    async present(x, y, roiManager, columnContainer, regionElement) {\n\n        removeAllChildNodes(this.body)\n\n        const feature = await this.browser.roiManager.findUserDefinedRegionWithKey(regionElement.dataset.region)\n\n        // Description Copy\n        const _description_copy_ = DOMUtils.div()\n        this.body.appendChild(_description_copy_)\n\n        const placeholder = 'Description'\n        const str = (feature.name || placeholder)\n\n        _description_copy_.innerText = str\n        _description_copy_.setAttribute('title', str)\n        placeholder === str ? _description_copy_.classList.add('igv-roi-placeholder') : _description_copy_.classList.remove('igv-roi-placeholder')\n\n\n        // Set Description\n        const description = DOMUtils.div()\n        this.body.appendChild(description)\n        description.innerText = 'Set Description'\n\n        description.addEventListener('click', event => {\n\n            event.stopPropagation()\n\n            this.container.style.display = 'none'\n\n            const callback = () => {\n\n                const value = this.browser.inputDialog.value || ''\n                feature.name = value.trim()\n\n                this.container.style.display = 'none'\n\n                this.browser.roiManager.repaintTable()\n            }\n\n            const config =\n                {\n                    label: 'Description',\n                    value: (feature.name || ''),\n                    callback\n                }\n\n            this.browser.inputDialog.present(config, event)\n\n        })\n\n\n        // Delete Region\n        const _delete_ = DOMUtils.div()\n        this.body.appendChild(_delete_)\n        _delete_.innerText = 'Delete Region'\n\n        _delete_.addEventListener('click', event => {\n            event.stopPropagation()\n            this.container.style.display = 'none'\n            this.browser.roiManager.deleteUserDefinedRegionWithKey(regionElement.dataset.region, this.browser.columnContainer)\n        })\n\n\n\n\n\n\n\n        // columnContainer.addEventListener('click', event => {\n        //     event.stopPropagation()\n        //     this.container.style.display = 'none'\n        // })\n\n        this.container.style.left = `${ x }px`\n        this.container.style.top  = `${ y }px`\n        this.container.style.display = 'flex'\n\n    }\n\n    async __present(x, y, roiManager, columnContainer, regionElement) {\n\n        removeAllChildNodes(this.container)\n\n        const feature = await this.browser.roiManager.findUserDefinedRegionWithKey(regionElement.dataset.region)\n\n        let row\n\n        // Go To\n        // row = DOMUtils.div({ class: 'igv-roi-menu-row' })\n        // row.innerText = 'Go To'\n        // this.container.appendChild(row)\n        //\n        // row.addEventListener('click', event => {\n        //     event.stopPropagation()\n        //     this.container.style.display = 'none'\n        //\n        //     const { locus } = parseRegionKey(regionElement.dataset.region)\n        //     this.browser.search(locus)\n        // })\n\n        // Description:\n        row = DOMUtils.div({ class: 'igv-roi-menu-row-edit-description' })\n        this.container.appendChild(row)\n\n        row.addEventListener('click', e => {\n            e.stopPropagation()\n        })\n\n        const str = 'description-input'\n\n        const label = document.createElement('label')\n        row.appendChild(label)\n\n        label.setAttribute('for', str)\n        label.innerText = 'Description:'\n\n        const input = document.createElement('input')\n        row.appendChild(input)\n\n        input.setAttribute('type', 'text')\n        input.setAttribute('name', str)\n        // input.setAttribute('placeholder', feature.name || 'Edit Description')\n        input.setAttribute('placeholder', '')\n        input.value = feature.name || ''\n\n        input.addEventListener('change', async e => {\n\n            e.stopPropagation()\n\n            const feature = await this.browser.roiManager.findUserDefinedRegionWithKey(regionElement.dataset.region)\n            feature.name = input.value\n\n            input.blur()\n            this.container.style.display = 'none'\n\n            await this.browser.roiManager.repaintTable()\n        })\n\n\n        // Delete\n        row = DOMUtils.div({ class: 'igv-roi-menu-row' })\n        row.innerText = 'Delete region'\n        this.container.appendChild(row)\n\n        row.addEventListener('click', event => {\n            event.stopPropagation()\n            this.container.style.display = 'none'\n            this.browser.roiManager.deleteUserDefinedRegionWithKey(regionElement.dataset.region, this.browser.columnContainer)\n        })\n\n        this.container.style.left = `${ x }px`\n        this.container.style.top  = `${ y }px`\n        this.container.style.display = 'flex'\n\n        columnContainer.addEventListener('click', event => {\n            event.stopPropagation()\n            this.container.style.display = 'none'\n        })\n\n    }\n\n    dispose() {\n        this.container.innerHTML = ''\n    }\n\n}\n\nfunction removeAllChildNodes(parent) {\n    while (parent.firstChild) {\n        parent.removeChild(parent.firstChild);\n    }\n}\n\nexport default ROIMenu\n","import FeatureSource from '../feature/featureSource.js'\nimport IGVGraphics from \"../igv-canvas.js\"\nimport { ROI_DEFAULT_COLOR, screenCoordinates } from \"./ROISet.js\"\n\nclass TrackROISet {\n\n    constructor(config, genome) {\n        this.name = config.name\n        this.featureSource = config.featureSource || FeatureSource(config, genome)\n        this.color = config.color || ROI_DEFAULT_COLOR\n    }\n\n    async getFeatures(chr, start, end) {\n        return this.featureSource.getFeatures({chr, start, end})\n    }\n\n    draw(drawConfiguration) {\n\n        const { context, bpPerPixel, bpStart, pixelTop, pixelHeight, pixelWidth, features, } = drawConfiguration\n\n        if (!features) {\n            return\n        }\n\n        const bpEnd = bpStart + (pixelWidth * bpPerPixel) + 1\n        for (let { start:regionStartBP, end:regionEndBP } of features) {\n\n            if (regionEndBP < bpStart) {\n                continue\n            }\n\n            if (regionStartBP > bpEnd) {\n                break\n            }\n\n            const { x, width } = screenCoordinates(regionStartBP, regionEndBP, bpStart, bpPerPixel)\n            IGVGraphics.fillRect(context, x, pixelTop, width, pixelHeight, { fillStyle: this.color })\n        }\n    }\n}\n\nexport default TrackROISet\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass ROITableControl {\n\n    constructor(parent, browser) {\n        this.browser = browser\n        this.button = DOMUtils.div({class: 'igv-navbar-button'})\n        parent.appendChild(this.button)\n        this.button.textContent = 'ROI Table'\n\n        this.button.addEventListener('click', () => {\n            this.buttonHandler(!browser.roiTableVisible)\n        })\n\n        this.browser = browser\n\n        this.setVisibility(browser.showROITableButton)\n\n        this.setState(browser.roiTableVisible)\n    }\n\n    buttonHandler(status) {\n        this.browser.roiTableVisible = status\n        this.setState(this.browser.roiTableVisible)\n        this.browser.setROITableVisibility(this.browser.roiTableVisible)\n    }\n\n    setVisibility(doShowROITablelButton) {\n        if (true === doShowROITablelButton) {\n            this.show()\n        } else {\n            this.hide()\n        }\n    }\n\n    setState(roiTableVisible) {\n        if (true === roiTableVisible) {\n            this.button.classList.add('igv-navbar-button-clicked')\n        } else {\n            this.button.classList.remove('igv-navbar-button-clicked')\n        }\n    }\n\n    show() {\n        this.button.style.display = 'block'\n        this.setState(this.browser.roiTableVisible)\n    }\n\n    hide() {\n        this.button.style.display = 'none'\n    }\n}\n\n\nexport default ROITableControl\n","\nimport $ from \"./vendor/jquery-3.3.1.slim.js\"\nimport {InputDialog, GenericColorPicker} from '../node_modules/igv-ui/dist/igv-ui.js'\nimport {BGZip, FileUtils, igvxhr, StringUtils, URIUtils} from \"../node_modules/igv-utils/src/index.js\"\nimport {DOMUtils, Icon} from \"../node_modules/igv-ui/dist/igv-ui.js\"\nimport Alert from './ui/alert.js'\nimport * as TrackUtils from './util/trackUtils.js'\nimport TrackView, {igv_axis_column_width} from \"./trackView.js\"\nimport C2S from \"./canvas2svg.js\"\nimport TrackFactory from \"./trackFactory.js\"\nimport ROISet from \"./roi/ROISet.js\"\nimport XMLSession from \"./session/igvXmlSession.js\"\nimport GenomeUtils from \"./genome/genome.js\"\nimport loadPlinkFile from \"./sampleInformation.js\"\nimport ReferenceFrame, {createReferenceFrameList} from \"./referenceFrame.js\"\nimport {buildOptions, createColumn, doAutoscale, getElementAbsoluteHeight, getFilename} from \"./util/igvUtils.js\"\nimport {createViewport} from \"./util/viewportUtils.js\"\nimport GtexUtils from \"./gtex/gtexUtils.js\"\nimport {defaultSequenceTrackOrder} from './sequenceTrack.js'\nimport version from \"./version.js\"\nimport FeatureSource from \"./feature/featureSource.js\"\nimport {defaultNucleotideColors} from \"./util/nucleotideColors.js\"\nimport search from \"./search.js\"\nimport NavbarManager from \"./navbarManager.js\"\nimport ChromosomeSelectWidget from \"./ui/chromosomeSelectWidget.js\"\nimport WindowSizePanel from \"./windowSizePanel.js\"\nimport CursorGuide from \"./ui/cursorGuide.js\"\nimport CursorGuideButton from \"./ui/cursorGuideButton.js\"\nimport CenterLineButton from './ui/centerLineButton.js'\nimport TrackLabelControl from \"./ui/trackLabelControl.js\"\nimport SampleNameControl from \"./ui/sampleNameControl.js\"\nimport ZoomWidget from \"./ui/zoomWidget.js\"\nimport DataRangeDialog from \"./ui/dataRangeDialog.js\"\nimport HtsgetReader from \"./htsget/htsgetReader.js\"\nimport SVGSaveControl from \"./ui/svgSaveControl.js\"\nimport MenuPopup from \"./ui/menuPopup.js\"\nimport {viewportColumnManager} from './viewportColumnManager.js'\nimport ViewportCenterLine from './ui/viewportCenterLine.js'\nimport IdeogramTrack from \"./ideogramTrack.js\"\nimport RulerTrack from \"./rulerTrack.js\"\nimport GtexSelection from \"./gtex/gtexSelection.js\"\nimport CircularViewControl from \"./ui/circularViewControl.js\"\nimport {createCircularView, makeCircViewChromosomes} from \"./jbrowse/circularViewUtils.js\"\nimport CustomButton from \"./ui/customButton.js\"\nimport ROIManager from './roi/ROIManager.js'\nimport ROITable from './roi/ROITable.js'\nimport ROIMenu from './roi/ROIMenu.js'\nimport TrackROISet from \"./roi/trackROISet.js\"\nimport ROITableControl from './ui/roiTableControl.js'\n\n// css - $igv-scrollbar-outer-width: 14px;\nconst igv_scrollbar_outer_width = 14\n\n// css - $igv-track-drag-column-width: 12px;\nconst igv_track_manipulation_handle_width = 12\n\n// css - $igv-track-gear-menu-column-width: 28px;\nconst igv_track_gear_menu_column_width = 28\n\n// $igv-column-shim-width: 1px;\n// $igv-column-shim-margin: 2px;\nconst column_multi_locus_shim_width = 2 + 1 + 2\n\nconst defaultSampleNameViewportWidth = 200\n\nclass Browser {\n\n    constructor(config, parentDiv) {\n\n        this.config = config\n        this.guid = DOMUtils.guid()\n        this.namespace = '.browser_' + this.guid\n\n        this.parent = parentDiv\n\n        this.root = DOMUtils.div({class: 'igv-container'})\n        parentDiv.appendChild(this.root)\n\n        this.alert = new Alert(this.root)\n\n        this.columnContainer = DOMUtils.div({class: 'igv-column-container'})\n        this.root.appendChild(this.columnContainer)\n\n        this.menuPopup = new MenuPopup(this.columnContainer)\n\n        this.initialize(config)\n\n        this.trackViews = []\n\n        this.constants = {\n            dragThreshold: 3,\n            scrollThreshold: 5,\n            defaultColor: \"rgb(0,0,150)\",\n            doubleClickDelay: config.doubleClickDelay || 500\n        }\n\n        // Map of event name -> [ handlerFn, ... ]\n        this.eventHandlers = {}\n\n        this.addMouseHandlers()\n\n        this.setControls(config)\n    }\n\n    initialize(config) {\n\n        if (config.gtex) {\n            GtexUtils.gtexLoaded = true\n        }\n        this.flanking = config.flanking\n        this.crossDomainProxy = config.crossDomainProxy\n        this.formats = config.formats\n        this.trackDefaults = config.trackDefaults\n        this.nucleotideColors = config.nucleotideColors || defaultNucleotideColors\n        for (let key of Object.keys(this.nucleotideColors)) {\n            this.nucleotideColors[key.toLowerCase()] = this.nucleotideColors[key]\n        }\n\n        this.trackLabelsVisible = config.showTrackLabels\n\n        this.roiTableVisible = config.showROITable\n        this.showROITableButton = config.showROITableButton\n\n        this.isCenterLineVisible = config.showCenterGuide\n\n        this.cursorGuideVisible = config.showCursorGuide\n\n        this.showSampleNames = config.showSampleNames\n        this.showSampleNameButton = config.showSampleNameButton\n        this.sampleNameViewportWidth = config.sampleNameViewportWidth || defaultSampleNameViewportWidth\n\n        if (config.search) {\n            this.searchConfig = {\n                type: \"json\",\n                url: config.search.url,\n                coords: config.search.coords === undefined ? 1 : config.search.coords,\n                chromosomeField: config.search.chromosomeField || \"chromosome\",\n                startField: config.search.startField || \"start\",\n                endField: config.search.endField || \"end\",\n                geneField: config.search.geneField || \"gene\",\n                snpField: config.search.snpField || \"snp\",\n                resultsField: config.search.resultsField\n            }\n        }\n    }\n\n    setControls(config) {\n\n        const $navBar = this.createStandardControls(config)\n        $navBar.insertBefore($(this.columnContainer))\n        this.$navigation = $navBar\n\n        if (false === config.showControls) {\n            $navBar.hide()\n        }\n\n    }\n\n    createStandardControls(config) {\n\n        this.navbarManager = new NavbarManager(this)\n\n        const $navBar = $('<div>', {class: 'igv-navbar'})\n        this.$navigation = $navBar\n\n        const $navbarLeftContainer = $('<div>', {class: 'igv-navbar-left-container'})\n        $navBar.append($navbarLeftContainer)\n\n        // IGV logo\n        const $logo = $('<div>', {class: 'igv-logo'})\n        $navbarLeftContainer.append($logo)\n\n        const logoSvg = logo()\n        logoSvg.css(\"width\", \"34px\")\n        logoSvg.css(\"height\", \"32px\")\n        $logo.append(logoSvg)\n\n        this.$current_genome = $('<div>', {class: 'igv-current-genome'})\n        $navbarLeftContainer.append(this.$current_genome)\n        this.$current_genome.text('')\n\n        const $genomicLocation = $('<div>', {class: 'igv-navbar-genomic-location'})\n        $navbarLeftContainer.append($genomicLocation)\n\n        // chromosome select widget\n        this.chromosomeSelectWidget = new ChromosomeSelectWidget(this, $genomicLocation.get(0))\n        if (undefined === config.showChromosomeWidget) {\n            config.showChromosomeWidget = true   // Default to true\n        }\n        if (true === config.showChromosomeWidget) {\n            this.chromosomeSelectWidget.show()\n        } else {\n            this.chromosomeSelectWidget.hide()\n        }\n\n        const $locusSizeGroup = $('<div>', {class: 'igv-locus-size-group'})\n        $genomicLocation.append($locusSizeGroup)\n\n        const $searchContainer = $('<div>', {class: 'igv-search-container'})\n        $locusSizeGroup.append($searchContainer)\n\n        // browser.$searchInput = $('<input type=\"text\" placeholder=\"Locus Search\">');\n        this.$searchInput = $('<input>', {class: 'igv-search-input', type: 'text', placeholder: 'Locus Search'})\n        $searchContainer.append(this.$searchInput)\n\n        this.$searchInput.change(() => this.doSearch(this.$searchInput.val()))\n\n        const searchIconContainer = DOMUtils.div({class: 'igv-search-icon-container'})\n        $searchContainer.append($(searchIconContainer))\n\n        searchIconContainer.appendChild(Icon.createIcon(\"search\"))\n\n        searchIconContainer.addEventListener('click', () => this.doSearch(this.$searchInput.val()))\n\n        this.windowSizePanel = new WindowSizePanel($locusSizeGroup.get(0), this)\n\n        const $navbarRightContainer = $('<div>', {class: 'igv-navbar-right-container'})\n        $navBar.append($navbarRightContainer)\n\n        const $toggle_button_container = $('<div class=\"igv-navbar-toggle-button-container\">')\n        $navbarRightContainer.append($toggle_button_container)\n        this.$toggle_button_container = $toggle_button_container\n\n        this.cursorGuide = new CursorGuide(this.columnContainer, this)\n\n        this.cursorGuideButton = new CursorGuideButton(this, $toggle_button_container.get(0))\n\n        this.centerLineButton = new CenterLineButton(this, $toggle_button_container.get(0))\n\n        this.setTrackLabelVisibility(config.showTrackLabels)\n        this.trackLabelControl = new TrackLabelControl($toggle_button_container.get(0), this)\n\n        // ROI Control\n        this.roiTableControl = new ROITableControl($toggle_button_container.get(0), this)\n\n        this.sampleNameControl = new SampleNameControl($toggle_button_container.get(0), this)\n\n        if (true === config.showSVGButton) {\n            this.svgSaveControl = new SVGSaveControl($toggle_button_container.get(0), this)\n        }\n\n        if (config.customButtons) {\n            for (let b of config.customButtons) {\n                new CustomButton($toggle_button_container.get(0), this, b)\n            }\n        }\n\n        this.zoomWidget = new ZoomWidget(this, $navbarRightContainer.get(0))\n\n        if (false === config.showNavigation) {\n            this.$navigation.hide()\n        }\n\n        this.inputDialog = new InputDialog(this.root)\n        this.inputDialog.container.id = `igv-input-dialog-${DOMUtils.guid()}`\n\n        this.dataRangeDialog = new DataRangeDialog(this, $(this.root))\n        this.dataRangeDialog.$container.get(0).id = `igv-data-range-dialog-${DOMUtils.guid()}`\n\n        this.genericColorPicker = new GenericColorPicker({parent: this.columnContainer, width: 432})\n        this.genericColorPicker.container.id = `igv-track-color-picker-${DOMUtils.guid()}`\n\n        return $navBar\n\n    }\n\n    getSampleNameViewportWidth() {\n        return false === this.showSampleNames ? 0 : this.sampleNameViewportWidth\n    }\n\n    isMultiLocusMode() {\n        return this.referenceFrameList && this.referenceFrameList.length > 1\n    };\n\n    addTrackToFactory(name, track) {\n        TrackFactory.addTrack(name, track)\n    }\n\n    isMultiLocusWholeGenomeView() {\n\n        if (undefined === this.referenceFrameList || 1 === this.referenceFrameList.length) {\n            return false\n        }\n\n        for (let referenceFrame of this.referenceFrameList) {\n            if ('all' === referenceFrame.chr.toLowerCase()) {\n                return true\n            }\n        }\n\n        return false\n    };\n\n    /**\n     * PUBLIC API FUNCTION\n     *\n     * Return the current genomic region as a locus string, or array of locus strings if in multi-locus view\n     * @returns {string|*[]|*}\n     */\n    currentLoci() {\n        const noCommaLocusString = (rf) => `${rf.chr}:${rf.start + 1}-${rf.end}`\n        if (undefined === this.referenceFrameList || 0 === this.referenceFrameList.length) {\n            return \"\"\n        } else if (1 === this.referenceFrameList.length) {\n            return noCommaLocusString(this.referenceFrameList[0])\n        } else {\n            return this.referenceFrameList.map(rf => noCommaLocusString(rf))\n        }\n    }\n\n    /**\n     * Render browse display as SVG\n     * @returns {string}\n     */\n    toSVG() {\n\n        const {y, width, height} = this.columnContainer.getBoundingClientRect()\n\n        const h_render = 8000\n\n        const config =\n            {\n\n                width,\n                height: h_render,\n\n                backdropColor: 'white',\n\n                multiLocusGap: 0,\n\n                viewbox:\n                    {\n                        x: 0,\n                        y: 0,\n                        width,\n                        height: h_render\n                    }\n\n            }\n\n        const context = new C2S(config)\n\n        // tracks -> SVG\n        const delta = {deltaX: 0, deltaY: -y}\n        for (let trackView of this.trackViews) {\n            trackView.renderSVGContext(context, delta)\n        }\n\n        this.roiManager.renderSVGContext(context, delta)\n\n        // reset height to trim away unneeded svg canvas real estate. Yes, a bit of a hack.\n        context.setHeight(height)\n\n        return context.getSerializedSvg(true)\n\n    }\n\n    renderSVG($container) {\n        const svg = this.toSVG()\n        $container.empty()\n        $container.append(svg)\n\n        return svg\n    }\n\n    saveSVGtoFile(config) {\n\n        let svg = this.toSVG()\n\n        if (config.$container) {\n            config.$container.empty()\n            config.$container.append(svg)\n        }\n\n        const path = config.filename || 'igvjs.svg'\n        const data = URL.createObjectURL(new Blob([svg], {type: \"application/octet-stream\"}))\n        FileUtils.download(path, data)\n    }\n\n    /**\n     * Initialize a session from an object, json, or by loading from a file.\n     *\n     * TODO Really should be split into at least 2 functions, load from file and load from object/json\n     *\n     * @param options\n     * @returns {*}\n     */\n    async loadSession(options) {\n\n        // TODO: depricated\n        this.roiSets = []\n\n        let session\n        if (options.url || options.file) {\n            session = await loadSessionFile(options)\n        } else {\n            session = options\n        }\n        return this.loadSessionObject(session)\n\n\n        async function loadSessionFile(options) {\n\n            const urlOrFile = options.url || options.file\n\n            if (options.url && (options.url.startsWith(\"blob:\") || options.url.startsWith(\"data:\"))) {\n                const json = Browser.uncompressSession(options.url)\n                return JSON.parse(json)\n\n            } else {\n                let filename = options.filename\n                if (!filename) {\n                    filename = (options.url ? await getFilename(options.url) : options.file.name)\n                }\n\n                if (filename.endsWith(\".xml\")) {\n\n                    const knownGenomes = GenomeUtils.KNOWN_GENOMES\n                    const string = await igvxhr.loadString(urlOrFile)\n                    return new XMLSession(string, knownGenomes)\n\n                } else if (filename.endsWith(\".json\")) {\n                    return igvxhr.loadJson(urlOrFile)\n                } else {\n                    return undefined\n                }\n            }\n        }\n    }\n\n\n    /**\n     * Note:  public API function\n     * @param session\n     * @returns {Promise<void>}\n     */\n    async loadSessionObject(session) {\n\n        // prepare to load a new session, discarding DOM and state\n        this.cleanHouseForSession()\n\n        this.showSampleNames = session.showSampleNames || false\n        this.sampleNameControl.setState(this.showSampleNames === true)\n\n        if (session.sampleNameViewportWidth) {\n            this.sampleNameViewportWidth = session.sampleNameViewportWidth\n        }\n\n        // axis column\n        createColumn(this.columnContainer, 'igv-axis-column')\n\n        // SampleName column\n        createColumn(this.columnContainer, 'igv-sample-name-column')\n\n        // Track scrollbar column\n        createColumn(this.columnContainer, 'igv-scrollbar-column')\n\n        // Track drag/reorder column\n        createColumn(this.columnContainer, 'igv-track-drag-column')\n\n        // Track gear column\n        createColumn(this.columnContainer, 'igv-gear-menu-column')\n\n        const genomeOrReference = session.reference || session.genome\n        if(!genomeOrReference) {\n            console.warn(\"No genome or reference object specified\")\n            return;\n        }\n        const genomeConfig = await GenomeUtils.expandReference(this.alert, genomeOrReference)\n\n\n        await this.loadReference(genomeConfig, session.locus)\n\n        this.centerLineList = this.createCenterLineList(this.columnContainer)\n\n        // Create ideogram and ruler track.  Really this belongs in browser initialization, but creation is\n        // deferred because ideogram and ruler are treated as \"tracks\", and tracks require a reference frame\n        let ideogramHeight = 0\n        if (false !== session.showIdeogram) {\n\n            const track = new IdeogramTrack(this)\n            track.id = 'ideogram'\n\n            const trackView = new TrackView(this, this.columnContainer, track)\n            const {$viewport} = trackView.viewports[0]\n            ideogramHeight = getElementAbsoluteHeight($viewport.get(0))\n\n            this.trackViews.push(trackView)\n        }\n\n        if (false !== session.showRuler) {\n            this.trackViews.push(new TrackView(this, this.columnContainer, new RulerTrack(this)))\n        }\n\n        // Restore gtex selections.\n        if (session.gtexSelections) {\n            for (let referenceFrame of this.referenceFrameList) {\n                for (let s of Object.keys(session.gtexSelections)) {\n                    const gene = session.gtexSelections[s].gene\n                    const snp = session.gtexSelections[s].snp\n                    referenceFrame.selection = new GtexSelection(gene, snp)\n                }\n            }\n        }\n\n        if (this.roiManager) {\n            this.roiManager.dispose()\n        }\n\n        const roiMenu = new ROIMenu(this, this.columnContainer)\n        const roiTableConfig =\n            {\n                browser: this,\n                parent: this.columnContainer,\n                headerTitle: 'Regions of Interest',\n                dismissHandler: () => this.roiTableControl.buttonHandler(false),\n                gotoButtonHandler: ROITable.gotoButtonHandler\n            }\n        if (session.roi) {\n\n            const roiSetList = session.roi.map(c => new ROISet(c, this.genome))\n\n            const named = roiSetList.filter(({name}) => name !== undefined && name.length > 0)\n\n            roiTableConfig.columnFormat = ROITable.getColumnFormatConfiguration(named.length > 0)\n\n            const roiTable = new ROITable(roiTableConfig)\n\n            this.roiManager = new ROIManager(this, roiMenu, roiTable, ideogramHeight, roiSetList)\n        } else {\n\n            roiTableConfig.columnFormat = ROITable.getColumnFormatConfiguration(false)\n\n            const roiTable = new ROITable(roiTableConfig)\n\n            this.roiManager = new ROIManager(this, roiMenu, roiTable, ideogramHeight, undefined)\n        }\n\n        await this.roiManager.initialize()\n\n        // Tracks.  Start with genome tracks, if any, then append session tracks\n        const genomeTracks = genomeConfig.tracks || []\n        const trackConfigurations = session.tracks ? genomeTracks.concat(session.tracks) : genomeTracks\n\n        // Ensure that we always have a sequence track with no explicit URL (=> the reference genome sequence track)\n        const pushSequenceTrack = trackConfigurations.filter(track => 'sequence' === track.type && !track.url && !track.fastaURL).length === 0\n        if (pushSequenceTrack /*&& false !== this.config.showSequence*/) {\n            trackConfigurations.push({type: \"sequence\", order: defaultSequenceTrackOrder})\n        }\n\n        // Maintain track order unless explicitly set\n        let trackOrder = 1\n        for (let t of trackConfigurations) {\n            if (undefined === t.order) {\n                t.order = trackOrder++\n            }\n        }\n\n        await this.loadTrackList(trackConfigurations)\n\n        // The ruler and ideogram tracks are not explicitly loaded, but needs updated nonetheless.\n        for (let rtv of this.trackViews.filter((tv) => tv.track.type === 'ruler' || tv.track.type === 'ideogram')) {\n            rtv.updateViews()\n        }\n\n        this.updateUIWithReferenceFrameList()\n\n    }\n\n    createCenterLineList(columnContainer) {\n\n        const centerLines = columnContainer.querySelectorAll('.igv-center-line')\n        for (let i = 0; i < centerLines.length; i++) {\n            centerLines[i].remove()\n        }\n\n        const centerLineList = []\n        const viewportColumns = columnContainer.querySelectorAll('.igv-column')\n        for (let i = 0; i < viewportColumns.length; i++) {\n            centerLineList.push(new ViewportCenterLine(this, this.referenceFrameList[i], viewportColumns[i]))\n        }\n\n        return centerLineList\n    }\n\n    /**\n     * Load a reference genome object.  This includes the fasta, and optional cytoband, but no tracks.  This method\n     * is used by loadGenome and loadSession.\n     *\n     * @param genomeConfig\n     * @param initialLocus\n     */\n    async loadReference(genomeConfig, initialLocus) {\n\n        const genome = await GenomeUtils.loadGenome(genomeConfig)\n\n        const genomeChange = undefined === this.genome || (this.genome.id !== genome.id)\n\n        this.genome = genome\n\n        this.updateNavbarDOMWithGenome(genome)\n\n        if (genomeChange) {\n            this.removeAllTracks()\n        }\n\n        let locus = getInitialLocus(initialLocus, genome)\n        const locusFound = await this.search(locus, true)\n        if (!locusFound) {\n            console.log(\"Initial locus not found: \" + locus)\n            locus = genome.getHomeChromosomeName()\n            const locusFound = await this.search(locus, true)\n            if (!locusFound) {\n                throw new Error(\"Cannot set initial locus\")\n            }\n        }\n\n        if (genomeChange && this.circularView) {\n            this.circularView.setAssembly({\n                name: this.genome.id,\n                id: this.genome.id,\n                chromosomes: makeCircViewChromosomes(this.genome)\n            })\n        }\n    }\n\n    cleanHouseForSession() {\n\n        for (let trackView of this.trackViews) {\n            // empty axis column, viewport columns, sampleName column, scroll column, drag column, gear column\n            trackView.removeDOMFromColumnContainer()\n        }\n\n        // discard all columns\n        const elements = this.columnContainer.querySelectorAll('.igv-axis-column, .igv-column-shim, .igv-column, .igv-sample-name-column, .igv-scrollbar-column, .igv-track-drag-column, .igv-gear-menu-column')\n        elements.forEach(column => column.remove())\n\n        this.trackViews = []\n\n        if (this.circularView) {\n            this.circularView.clearChords()\n        }\n\n    }\n\n    updateNavbarDOMWithGenome(genome) {\n\n        // If the genome is defined directly from a fasta file or data url the \"id\" will be the full url.  Don't display\n        // this.\n        let genomeLabel = (genome.id && genome.id.length < 10 ? genome.id : '')\n        this.$current_genome.text(genomeLabel)\n        this.$current_genome.attr('title', genome.id || '')\n        this.chromosomeSelectWidget.update(genome)\n    }\n\n    /**\n     * Load a genome, defined by a string ID or a json-like configuration object. This includes a fasta reference\n     * as well as optional cytoband and annotation tracks.\n     *\n     * @param idOrConfig\n     * @returns genome\n     */\n    async loadGenome(idOrConfig) {\n\n        const genomeConfig = await GenomeUtils.expandReference(this.alert, idOrConfig)\n        await this.loadReference(genomeConfig, undefined)\n\n        const tracks = genomeConfig.tracks || []\n\n        // Insure that we always have a sequence track\n        const pushSequenceTrack = tracks.filter(track => track.type === 'sequence').length === 0\n        if (pushSequenceTrack) {\n            tracks.push({type: \"sequence\", order: defaultSequenceTrackOrder})\n        }\n\n        await this.loadTrackList(tracks)\n\n        await this.updateViews()\n\n        return this.genome\n    }\n\n    /**\n     * Called after a session load, search, pan (horizontal drag), or resize\n     *\n     * @param referenceFrameList\n     */\n    updateUIWithReferenceFrameList() {\n\n        const referenceFrameList = this.referenceFrameList\n\n        this.updateLocusSearchWidget()\n\n        const isWGV = (this.isMultiLocusWholeGenomeView() || GenomeUtils.isWholeGenomeView(referenceFrameList[0].chr))\n\n        this.navbarManager.navbarDidResize(this.$navigation.width(), isWGV)\n\n        toggleTrackLabels(this.trackViews, this.trackLabelsVisible)\n\n        this.setCenterLineAndCenterLineButtonVisibility(!GenomeUtils.isWholeGenomeView(referenceFrameList[0].chr))\n\n    }\n\n    setTrackLabelVisibility(isVisible) {\n        toggleTrackLabels(this.trackViews, isVisible)\n    }\n\n    setROITableVisibility(isVisible) {\n        true === isVisible ? this.roiManager.presentTable() : this.roiManager.dismissTable()\n    }\n\n    // cursor guide\n    setCursorGuideVisibility(cursorGuideVisible) {\n\n        if (cursorGuideVisible) {\n            this.cursorGuide.show()\n        } else {\n            this.cursorGuide.hide()\n        }\n    }\n\n    setCustomCursorGuideMouseHandler(mouseHandler) {\n        this.cursorGuide.customMouseHandler = mouseHandler\n    }\n\n    // center line\n    setCenterLineVisibility(isCenterLineVisible) {\n        for (let centerLine of this.centerLineList) {\n            if (true === isCenterLineVisible) {\n                centerLine.show()\n                centerLine.repaint()\n            } else {\n                centerLine.hide()\n            }\n        }\n    }\n\n    setCenterLineAndCenterLineButtonVisibility(isCenterLineVisible) {\n\n        for (let centerLine of this.centerLineList) {\n            const isShown = isCenterLineVisible && centerLine.isVisible\n            isShown ? centerLine.show() : centerLine.container.style.display = 'none'\n        }\n\n        const isShown = isCenterLineVisible && this.centerLineButton.isVisible\n        isShown ? this.centerLineButton.show() : this.centerLineButton.button.style.display = 'none'\n\n    }\n\n    /**\n     * Public API function. Load a list of tracks.\n     *\n     * @param configList  Array of track configurations\n     * @returns {Promise<*>}  Promise for track objects\n     */\n    async loadTrackList(configList) {\n\n        const promises = []\n        for (let config of configList) {\n            promises.push(this._loadTrack(config))\n        }\n\n        const loadedTracks = await Promise.all(promises)\n        const groupAutoscaleViews = this.trackViews.filter(function (trackView) {\n            return trackView.track.autoscaleGroup\n        })\n        if (groupAutoscaleViews.length > 0) {\n            this.updateViews()\n        }\n        return loadedTracks\n    }\n\n    /**\n     * Public API function\n     *\n     * Load an individual track.  If part of an autoscale group force a general update\n     *\n     * @param config  A track configuration\n     * @returns {Promise<*>}  Promise for track object\n     */\n    async loadTrack(config) {\n\n        const newTrack = this._loadTrack(config)\n\n        if (config.autoscaleGroup) {\n            // Await newTrack load and update all views\n            await newTrack\n            this.updateViews()\n        }\n\n        return newTrack\n    }\n\n    /**\n     * Return a promise to load a track.   Private function used by loadTrack() and loadTrackList()\n     *\n     * @param config\n     * @returns {*}\n     */\n\n    async _loadTrack(config) {\n\n        // config might be json\n        if (StringUtils.isString(config)) {\n            config = JSON.parse(config)\n        }\n\n        try {\n\n            const newTrack = await this.createTrack(config)\n\n            if (undefined === newTrack) {\n                return\n            }\n\n            // Set order field of track here.  Otherwise track order might get shuffled during asynchronous load\n            if (undefined === newTrack.order) {\n                newTrack.order = this.trackViews.length\n            }\n\n            const trackView = new TrackView(this, this.columnContainer, newTrack)\n            this.trackViews.push(trackView)\n            toggleTrackLabels(this.trackViews, this.trackLabelsVisible)\n            this.reorderTracks()\n            this.fireEvent('trackorderchanged', [this.getTrackOrder()])\n\n            if (typeof newTrack.postInit === 'function') {\n                try {\n                    trackView.startSpinner()\n                    await newTrack.postInit()\n                } finally {\n                    trackView.stopSpinner()\n                }\n            }\n\n            if (!newTrack.autoscaleGroup) {\n                // Group autoscale will get updated later (as a group)\n                if (config.sync) {\n                    await trackView.updateViews()\n                } else {\n                    trackView.updateViews()\n                }\n            }\n\n            if (typeof newTrack.hasSamples === 'function' && newTrack.hasSamples()) {\n                if (this.config.showSampleNameButton !== false) {\n                    this.sampleNameControl.show()   // If not explicitly set\n                }\n            }\n\n            return newTrack\n\n        } catch (error) {\n            const httpMessages =\n                {\n                    \"401\": \"Access unauthorized\",\n                    \"403\": \"Access forbidden\",\n                    \"404\": \"Not found\"\n                }\n            console.error(error)\n            let msg = error.message || error.error || error.toString()\n            if (httpMessages.hasOwnProperty(msg)) {\n                msg = httpMessages[msg]\n            }\n            msg += (\": \" + config.url)\n            this.alert.present(new Error(msg), undefined)\n        }\n    }\n\n    /**\n     * Public API function - load a region of interest\n     *\n     * @param config  A \"track\" configuration object, or array of objects,  of type == \"annotation\" (bed, gff, etc)\n     *\n     * @returns {Promise<void>}\n     */\n    async loadROI(config) {\n        await this.roiManager.loadROI(config, this.genome)\n    }\n\n    /**\n     * Public API function - clear all regions of interest (ROI), including preloaded and user-defined ROIs\n     */\n    clearROIs() {\n        this.roiManager.clearROIs()\n    }\n\n    /**\n     * Public API function. Return a promise for the list of user-defined regions-of-interest\n     */\n    async getUserDefinedROIs() {\n\n        if (this.roiManager) {\n\n            const set = await this.roiManager.getUserDefinedROISet()\n            if (undefined === set) {\n                return []\n            }\n\n            const featureHash = await set.getAllFeatures()\n            const featureList = []\n            for (let value of Object.values(featureHash)) {\n                featureList.push(...value)\n            }\n\n            return featureList\n\n        } else {\n            return []\n        }\n    }\n\n    getRulerTrackView() {\n        const list = this.trackViews.filter(({track}) => 'ruler' === track.id)\n        return list.length > 0 ? list[0] : undefined\n    }\n\n    /**\n     * Create a Track object.\n     * @param config\n     * @returns {Promise<*>}\n     */\n    async createTrack(config) {\n\n        // Resolve function and promise urls\n        let url = await URIUtils.resolveURL(config.url || config.fastaURL)\n        if (StringUtils.isString(url)) {\n            url = url.trim()\n        }\n\n        if (url) {\n            if (config.format) {\n                config.format = config.format.toLowerCase()\n            } else if (config.fastaURL) {\n                config.format = \"fasta\"  // by definition\n            } else {\n                let filename = config.filename\n                if (!filename) {\n                    filename = await getFilename(url)\n                }\n\n                const format = TrackUtils.inferFileFormat(filename)\n\n                if (\"tsv\" === format) {\n                    config.format = await TrackUtils.inferFileFormatFromHeader(config)\n                } else if (format) {\n                    config.format = format\n                } else {\n                    if (config.sourceType === \"htsget\") {\n                        // Check for htsget URL.  This is a longshot\n                        await HtsgetReader.inferFormat(config)\n                    }\n                }\n            }\n        }\n\n\n        let type = config.type ? config.type.toLowerCase() : undefined\n\n        if (!type) {\n            type = TrackUtils.inferTrackType(config)\n            if (\"bedtype\" === type) {\n                // Bed files must be read to determine track type\n                const featureSource = FeatureSource(config, this.genome)\n                config._featureSource = featureSource    // This is a temp variable, bit of a hack\n                const trackType = await featureSource.trackType()\n                if (trackType) {\n                    type = trackType\n                } else {\n                    type = \"annotation\"\n                }\n            }\n            // Record in config to make type persistent in session\n            config.type = type\n        }\n\n        // Set defaults if specified\n        if (this.trackDefaults && type) {\n            const settings = this.trackDefaults[type]\n            if (settings) {\n                for (let property in settings) {\n                    if (settings.hasOwnProperty(property) && config[property] === undefined) {\n                        config[property] = settings[property]\n                    }\n                }\n            }\n        }\n\n        const track = TrackFactory.getTrack(type, config, this)\n        if (undefined === track) {\n            this.alert.present(new Error(`Error creating track.  Could not determine track type for file: ${config.url || config}`), undefined)\n        } else {\n\n            if (config.roi && config.roi.length > 0) {\n                track.roiSets = config.roi.map(r => new TrackROISet(r, this.genome))\n            }\n\n            return track\n        }\n    }\n\n\n    reorderTracks() {\n\n        this.trackViews.sort(function (a, b) {\n\n            const firstSortOrder = tv => {\n                return 'ideogram' === tv.track.id ? 1 :\n                    'ruler' === tv.track.id ? 2 :\n                        3\n            }\n\n            const aOrder1 = firstSortOrder(a)\n            const bOrder1 = firstSortOrder(b)\n            if (aOrder1 === bOrder1) {\n                const aOrder2 = a.track.order || 0\n                const bOrder2 = b.track.order || 0\n                return aOrder2 - bOrder2\n            } else {\n                return aOrder1 - bOrder1\n            }\n        })\n\n        // discard current track order\n        for (let {axis, viewports, sampleNameViewport, outerScroll, dragHandle, gearContainer} of this.trackViews) {\n\n            axis.remove()\n\n            for (let {$viewport} of viewports) {\n                $viewport.detach()\n            }\n\n            sampleNameViewport.viewport.remove()\n\n            outerScroll.remove()\n            dragHandle.remove()\n            gearContainer.remove()\n        }\n\n        // Reattach the divs to the dom in the correct order\n        const viewportColumns = this.columnContainer.querySelectorAll('.igv-column')\n\n        for (let {axis, viewports, sampleNameViewport, outerScroll, dragHandle, gearContainer} of this.trackViews) {\n\n            this.columnContainer.querySelector('.igv-axis-column').appendChild(axis)\n\n            for (let i = 0; i < viewportColumns.length; i++) {\n                const {$viewport} = viewports[i]\n                viewportColumns[i].appendChild($viewport.get(0))\n            }\n\n            this.columnContainer.querySelector('.igv-sample-name-column').appendChild(sampleNameViewport.viewport)\n\n            this.columnContainer.querySelector('.igv-scrollbar-column').appendChild(outerScroll)\n\n            this.columnContainer.querySelector('.igv-track-drag-column').appendChild(dragHandle)\n\n            this.columnContainer.querySelector('.igv-gear-menu-column').appendChild(gearContainer)\n        }\n\n    }\n\n    getTrackOrder() {\n        return this.trackViews.filter(tv => tv.track && tv.track.name).map(tv => tv.track.name)\n    }\n\n    /**\n     * NOTE: Public API function\n     *\n     * Remove all tracks matching the given name.  Usually this will be a single track, but there is no\n     * guarantee names are unique\n     *\n     * @param name\n     */\n    removeTrackByName(name) {\n        const copy = this.trackViews.slice()\n        for (let trackView of copy) {\n            if (name === trackView.track.name) {\n                this.removeTrack(trackView.track)\n            }\n        }\n    }\n\n    /**\n     * NOTE: Public API function\n     *\n     * Remove the given track.  If it has already been removed this is a no-op.\n     *\n     * @param track\n     */\n    removeTrack(track) {\n        for (let trackView of this.trackViews) {\n            if (track === trackView.track) {\n                this._removeTrack(trackView.track)\n                break\n            }\n        }\n    }\n\n    _removeTrack(track) {\n        if (track.disposed) return\n        this.trackViews.splice(this.trackViews.indexOf(track.trackView), 1)\n        this.fireEvent('trackremoved', [track])\n        this.fireEvent('trackorderchanged', [this.getTrackOrder()])\n        if (track.trackView) {\n            track.trackView.dispose()\n        }\n    }\n\n    /**\n     * API function\n     */\n    removeAllTracks() {\n\n        const remainingTrackViews = []\n\n        for (let trackView of this.trackViews) {\n\n            if (trackView.track.id !== 'ruler' && trackView.track.id !== 'ideogram') {\n                this.fireEvent('trackremoved', [trackView.track])\n                trackView.dispose()\n            } else {\n                remainingTrackViews.push(trackView)\n            }\n        }\n\n        this.trackViews = remainingTrackViews\n    }\n\n    /**\n     *\n     * @param property\n     * @param value\n     * @returns {Array}  tracks with given property value.  e.g. findTracks(\"type\", \"annotation\")\n     */\n    findTracks(property, value) {\n\n        let f = typeof property === 'function' ?\n            trackView => property(trackView.track) :\n            trackView => value === trackView.track[property]\n\n        return this.trackViews.filter(f).map(tv => tv.track)\n    }\n\n    /**\n     * Set the track height globally for all tracks.  (Note: Its not clear why this is useful).\n     * @param newHeight\n     */\n    setTrackHeight(newHeight) {\n\n        this.trackHeight = newHeight\n\n        this.trackViews.forEach(function (trackView) {\n            trackView.setTrackHeight(newHeight)\n        })\n\n    }\n\n    /**\n     * API function to signal that this browser visibility has changed, e.g. from hiding/showing in a tab interface.\n     *\n     * @returns {Promise<void>}\n     */\n    async visibilityChange() {\n        this.layoutChange()\n    }\n\n    async layoutChange() {\n\n        const status = this.referenceFrameList.find(referenceFrame => referenceFrame.bpPerPixel < 0)\n\n        if (status) {\n            const viewportWidth = this.calculateViewportWidth(this.referenceFrameList.length)\n            for (let referenceFrame of this.referenceFrameList) {\n                referenceFrame.bpPerPixel = (referenceFrame.end - referenceFrame.start) / viewportWidth\n            }\n        }\n\n        if (this.referenceFrameList) {\n            const isWGV = this.isMultiLocusWholeGenomeView() || GenomeUtils.isWholeGenomeView(this.referenceFrameList[0].chr)\n            this.navbarManager.navbarDidResize(this.$navigation.width(), isWGV)\n        }\n\n        resize.call(this)\n        await this.updateViews()\n    }\n\n    async updateViews() {\n\n        const trackViews = this.trackViews\n\n        this.updateLocusSearchWidget()\n\n        for (let centerGuide of this.centerLineList) {\n            centerGuide.repaint()\n        }\n\n        // Don't autoscale while dragging.\n        if (this.dragObject) {\n            for (let trackView of trackViews) {\n                await trackView.updateViews()\n            }\n        } else {\n            // Group autoscale\n            const groupAutoscaleTracks = {}\n            const otherTracks = []\n            for (let trackView of trackViews) {\n                const group = trackView.track.autoscaleGroup\n                if (group) {\n                    var l = groupAutoscaleTracks[group]\n                    if (!l) {\n                        l = []\n                        groupAutoscaleTracks[group] = l\n                    }\n                    l.push(trackView)\n                } else {\n                    otherTracks.push(trackView)\n                }\n            }\n\n            if (Object.entries(groupAutoscaleTracks).length > 0) {\n\n                const keys = Object.keys(groupAutoscaleTracks)\n                for (let group of keys) {\n\n                    const groupTrackViews = groupAutoscaleTracks[group]\n                    const promises = []\n\n                    for (let trackView of groupTrackViews) {\n                        promises.push(trackView.getInViewFeatures())\n                    }\n\n                    const featureArray = await Promise.all(promises)\n\n                    var allFeatures = [], dataRange\n\n                    for (let features of featureArray) {\n                        allFeatures = allFeatures.concat(features)\n                    }\n                    dataRange = doAutoscale(allFeatures)\n\n                    const p = []\n                    for (let trackView of groupTrackViews) {\n                        trackView.track.dataRange = dataRange\n                        trackView.track.autoscale = false\n                        p.push(trackView.updateViews())\n                    }\n                    await Promise.all(p)\n                }\n\n            }\n\n            await Promise.all(otherTracks.map(tv => tv.updateViews()))\n            // for (let trackView of otherTracks) {\n            //     await trackView.updateViews(force);\n            // }\n        }\n\n    }\n\n    repaintViews() {\n        for (let trackView of this.trackViews) {\n            trackView.repaintViews()\n        }\n    }\n\n    updateLocusSearchWidget() {\n\n        if(!this.referenceFrameList) return\n        const referenceFrameList = this.referenceFrameList\n\n        // Update end position of reference frames based on pixel widths.  This is hacky, but its been done here\n        // for a long time, although indirectly.\n        const width = this.calculateViewportWidth(this.referenceFrameList.length)\n        for (let referenceFrame of referenceFrameList) {\n            referenceFrame.end = referenceFrame.start + referenceFrame.bpPerPixel * width\n        }\n\n        this.chromosomeSelectWidget.select.value = referenceFrameList.length === 1 ? this.referenceFrameList[0].chr : ''\n\n        const loc = this.referenceFrameList.map(rf => rf.getLocusString()).join(' ')\n        //const loc = this.referenceFrameList.length === 1 ?   this.referenceFrameList[0].getLocusString() : '';\n        this.$searchInput.val(loc)\n\n        this.fireEvent('locuschange', [this.referenceFrameList])\n    }\n\n    calculateViewportWidth(columnCount) {\n\n        let {width} = this.columnContainer.getBoundingClientRect()\n\n        const sampleNameViewportWidth = this.getSampleNameViewportWidth()\n\n        width -= igv_axis_column_width + sampleNameViewportWidth + igv_scrollbar_outer_width + igv_track_manipulation_handle_width + igv_track_gear_menu_column_width\n\n        width -= column_multi_locus_shim_width * (columnCount - 1)\n\n        return Math.floor(width / columnCount)\n    }\n\n    getCenterLineXOffset() {\n        let {width: columnContainerWidth} = this.columnContainer.getBoundingClientRect()\n        columnContainerWidth -= igv_axis_column_width + this.getSampleNameViewportWidth() + igv_scrollbar_outer_width + igv_track_manipulation_handle_width + igv_track_gear_menu_column_width\n        return Math.floor(columnContainerWidth / 2 + igv_axis_column_width)\n    }\n\n    minimumBases() {\n        return this.config.minimumBases\n    }\n\n    // Zoom in by a factor of 2, keeping the same center location\n    zoomIn() {\n        this.zoomWithScaleFactor(0.5)\n    };\n\n    // Zoom out by a factor of 2, keeping the same center location if possible\n    zoomOut() {\n        this.zoomWithScaleFactor(2.0)\n    };\n\n    async zoomWithScaleFactor(scaleFactor, centerBPOrUndefined, referenceFrameOrUndefined) {\n\n        if(!this.referenceFrameList) return\n\n        const viewportWidth = this.calculateViewportWidth(this.referenceFrameList.length)\n\n        let referenceFrames = referenceFrameOrUndefined ? [referenceFrameOrUndefined] : this.referenceFrameList\n\n        for (let referenceFrame of referenceFrames) {\n            referenceFrame.zoomWithScaleFactor(this, scaleFactor, viewportWidth, centerBPOrUndefined)\n        }\n    }\n\n    /**\n     * Add a new multi-locus panel for the specified region\n     * @param chr\n     * @param start\n     * @param end\n     * @param referenceFrameLeft - optional, if supplied new panel should be placed to the immediate right\n     */\n    async addMultiLocusPanel(chr, start, end, referenceFrameLeft) {\n\n        if(!this.referenceFrameList) return\n\n        // account for reduced viewport width as a result of adding right mate pair panel\n        const viewportWidth = this.calculateViewportWidth(1 + this.referenceFrameList.length)\n        const scaleFactor = this.calculateViewportWidth(this.referenceFrameList.length) / this.calculateViewportWidth(1 + this.referenceFrameList.length)\n        for (let refFrame of this.referenceFrameList) {\n            refFrame.bpPerPixel *= scaleFactor\n        }\n\n        const bpp = (end - start) / viewportWidth\n        const newReferenceFrame = new ReferenceFrame(this.genome, chr, start, end, bpp)\n        const indexLeft = referenceFrameLeft ? this.referenceFrameList.indexOf(referenceFrameLeft) : this.referenceFrameList.length - 1\n        const indexRight = 1 + indexLeft\n\n        // TODO -- this is really ugly\n        const {$viewport} = this.trackViews[0].viewports[indexLeft]\n        const viewportColumn = viewportColumnManager.insertAfter($viewport.get(0).parentElement)\n\n        if (indexRight === this.referenceFrameList.length) {\n            this.referenceFrameList.push(newReferenceFrame)\n            for (let trackView of this.trackViews) {\n                const viewport = createViewport(trackView, viewportColumn, newReferenceFrame)\n                trackView.viewports.push(viewport)\n            }\n        } else {\n            this.referenceFrameList.splice(indexRight, 0, newReferenceFrame)\n            for (let trackView of this.trackViews) {\n                const viewport = createViewport(trackView, viewportColumn, newReferenceFrame)\n                trackView.viewports.splice(indexRight, 0, viewport)\n            }\n        }\n\n\n        this.centerLineList = this.createCenterLineList(this.columnContainer)\n\n        resize.call(this)\n        await this.updateViews(true)\n    }\n\n    async removeMultiLocusPanel(referenceFrame) {\n\n        // find the $column corresponding to this referenceFrame and remove it\n        const index = this.referenceFrameList.indexOf(referenceFrame)\n        const {$viewport} = this.trackViews[0].viewports[index]\n        viewportColumnManager.removeColumnAtIndex(index, $viewport.parent().get(0))\n\n        for (let {viewports} of this.trackViews) {\n            viewports[index].dispose()\n            viewports.splice(index, 1)\n        }\n\n        this.referenceFrameList.splice(index, 1)\n\n        if (1 === this.referenceFrameList.length && this.getRulerTrackView()) {\n            for (let rulerViewport of this.getRulerTrackView().viewports) {\n                rulerViewport.dismissLocusLabel()\n            }\n        }\n\n        const scaleFactor = this.calculateViewportWidth(1 + this.referenceFrameList.length) / this.calculateViewportWidth(this.referenceFrameList.length)\n\n        await this.rescaleForMultiLocus(scaleFactor)\n\n    }\n\n    /**\n     * Goto the locus represented by the selected referenceFrame, discarding all other panels\n     *\n     * @param referenceFrame\n     * @returns {Promise<void>}\n     */\n    async gotoMultilocusPanel(referenceFrame) {\n\n        const referenceFrameIndex = this.referenceFrameList.indexOf(referenceFrame)\n\n        // Remove columns for unselected panels\n        this.columnContainer.querySelectorAll('.igv-column').forEach((column, c) => {\n            if (c === referenceFrameIndex) {\n                // do nothing\n            } else {\n                column.remove()\n            }\n        })\n\n        // Remove all column shims\n        this.columnContainer.querySelectorAll('.igv-column-shim').forEach(shim => shim.remove())\n\n        // Discard viewports\n        for (let trackView of this.trackViews) {\n            const retain = trackView.viewports[referenceFrameIndex]\n            trackView.viewports.filter((viewport, i) => i !== referenceFrameIndex).forEach(viewport => viewport.dispose())\n            trackView.viewports = [retain]\n        }\n\n        const viewportWidth = this.calculateViewportWidth(1)\n        referenceFrame.bpPerPixel = (referenceFrame.end - referenceFrame.start) / viewportWidth\n        this.referenceFrameList = [referenceFrame]\n\n        this.trackViews.forEach(({viewports}) => viewports.forEach(viewport => viewport.setWidth(viewportWidth)))\n\n        this.centerLineList = this.createCenterLineList(this.columnContainer)\n\n        this.updateUIWithReferenceFrameList()\n\n        await this.updateViews(true)\n\n    }\n\n    async rescaleForMultiLocus(scaleFactor) {\n\n        const viewportWidth = this.calculateViewportWidth(this.referenceFrameList.length)\n\n        for (let referenceFrame of this.referenceFrameList) {\n            referenceFrame.bpPerPixel *= scaleFactor\n        }\n\n        for (let {viewports} of this.trackViews) {\n\n            for (let viewport of viewports) {\n                viewport.setWidth(viewportWidth)\n            }\n        }\n\n        this.centerLineList = this.createCenterLineList(this.columnContainer)\n\n        this.updateUIWithReferenceFrameList()\n\n        await this.updateViews()\n\n    }\n\n    /**\n     * @deprecated  This is a deprecated method with no known usages.  To be removed in a future release.\n     */\n    async goto(chr, start, end) {\n        await this.search(chr + \":\" + start + \"-\" + end)\n    }\n\n    /**\n\n     * Search for the locus string -- this function is called from various igv.js GUI elements, and is not part of the\n     * API.  Wraps ```search``` and presents an error dialog if false.\n     *\n     * @param string\n     * @param init\n     * @returns {Promise<void>}\n     */\n    async doSearch(string, init) {\n        const success = await this.search(string, init)\n        if (!success) {\n            this.alert.present(new Error(`Unrecognized locus: <b> ${string} </b>`))\n        }\n        return success\n    }\n\n\n    /**\n     * Search for the locus string\n     * NOTE: This is part of the API\n     * @param string\n     * @param init  true if called during browser initialization\n     * @returns {Promise<boolean>}  true if found, false if not\n     */\n    async search(string, init) {\n\n        const loci = await search(this, string)\n\n        if (loci && loci.length > 0) {\n\n            // create reference frame list based on search loci\n            this.referenceFrameList = createReferenceFrameList(loci, this.genome, this.flanking, this.minimumBases(), this.calculateViewportWidth(loci.length), this.isSoftclipped())\n\n            // discard viewport DOM elements\n            for (let trackView of this.trackViews) {\n                // empty axis column, viewport columns, sampleName column, scroll column, drag column, gear column\n                trackView.removeDOMFromColumnContainer()\n            }\n\n            // discard ONLY viewport columns\n            this.columnContainer.querySelectorAll('.igv-column-shim, .igv-column').forEach(el => el.remove())\n\n            // Insert viewport columns preceding the sample-name column\n            viewportColumnManager.insertBefore(this.columnContainer.querySelector('.igv-sample-name-column'), this.referenceFrameList.length)\n\n            this.centerLineList = this.createCenterLineList(this.columnContainer)\n\n            // Populate the columns\n            for (let trackView of this.trackViews) {\n                trackView.addDOMToColumnContainer(this, this.columnContainer, this.referenceFrameList)\n            }\n\n            this.updateUIWithReferenceFrameList()\n\n            if (!init) {\n                await this.updateViews()\n            }\n            return true\n        } else {\n            return false\n        }\n    }\n\n    async loadSampleInformation(url) {\n        var name = url\n        if (FileUtils.isFile(url)) {\n            name = url.name\n        }\n        var ext = name.substr(name.lastIndexOf('.') + 1)\n        if (ext === 'fam') {\n            this.sampleInformation = await loadPlinkFile(url)\n        }\n    };\n\n// EVENTS\n\n    on(eventName, fn) {\n        if (!this.eventHandlers[eventName]) {\n            this.eventHandlers[eventName] = []\n        }\n        this.eventHandlers[eventName].push(fn)\n    };\n\n    /**\n     * @deprecated use off()\n     * @param eventName\n     * @param fn\n     */\n    un(eventName, fn) {\n        this.off(eventName, fn)\n    };\n\n    off(eventName, fn) {\n\n        if (!eventName) {\n            this.eventHandlers = {}   // Remove all event handlers\n        } else if (!fn) {\n            this.eventHandlers[eventName] = [] // Remove all eventhandlers matching name\n        } else {\n            // Remove specific event handler\n            const handlers = this.eventHandlers[eventName]\n            if (!handlers || handlers.length === 0) {\n                console.warn(\"No handlers to remove for event: \" + eventName)\n            } else {\n                const callbackIndex = handlers.indexOf(fn)\n                if (callbackIndex !== -1) {\n                    this.eventHandlers[eventName].splice(callbackIndex, 1)\n                }\n            }\n        }\n    }\n\n    fireEvent(eventName, args, thisObj) {\n\n        const handlers = this.eventHandlers[eventName]\n        if (undefined === handlers || handlers.length === 0) {\n            return undefined\n        }\n\n        const scope = thisObj || window\n        const results = handlers.map(function (event) {\n            return event.apply(scope, args)\n        })\n\n        return results[0]\n    }\n\n    dispose() {\n        this.removeMouseHandlers()\n        for (let trackView of this.trackViews) {\n            trackView.dispose()\n        }\n    }\n\n    /**\n     * Return a json-like object (note not a json string) representing the current state.\n     *\n     */\n    toJSON() {\n\n        const json = {\n            \"version\": version()\n        }\n\n        if (this.showSampleNames !== undefined) {\n            json['showSampleNames'] = this.showSampleNames\n        }\n        if (this.sampleNameViewportWidth !== defaultSampleNameViewportWidth) {\n            json['sampleNameViewportWidth'] = this.sampleNameViewportWidth\n        }\n\n        json[\"reference\"] = this.genome.toJSON()\n        if (json.reference.fastaURL instanceof File) {   // Test specifically for File.  Other types of File-like objects might be savable) {\n            throw new Error(`Error. Sessions cannot include local file references ${json.reference.fastaURL.name}.`)\n        } else if (json.reference.indexURL instanceof File) {   // Test specifically for File.  Other types of File-like objects might be savable) {\n            throw new Error(`Error. Sessions cannot include local file references ${json.reference.indexURL.name}.`)\n        }\n\n        // Build locus array (multi-locus view).  Use the first track to extract the loci, any track could be used.\n        const locus = []\n        const gtexSelections = {}\n        let hasGtexSelections = false\n        let anyTrackView = this.trackViews[0]\n        for (let {referenceFrame} of anyTrackView.viewports) {\n            const locusString = referenceFrame.getLocusString()\n            locus.push(locusString)\n            if (referenceFrame.selection) {\n                const selection = {\n                    gene: referenceFrame.selection.gene,\n                    snp: referenceFrame.selection.snp\n                }\n                gtexSelections[locusString] = selection\n                hasGtexSelections = true\n            }\n        }\n        json[\"locus\"] = locus.length === 1 ? locus[0] : locus\n        if (hasGtexSelections) {\n            json[\"gtexSelections\"] = gtexSelections\n        }\n\n        json[\"roi\"] = this.roiManager.toJSON()\n\n        const trackJson = []\n        const errors = []\n        for (let {track} of this.trackViews) {\n            try {\n                let config\n                if (typeof track.getState === \"function\") {\n                    config = track.getState()\n                } else {\n                    config = track.config\n                }\n\n                if (config) {\n                    // null backpointer to browser\n                    if (config.browser) {\n                        delete config.browser\n                    }\n                    config.order = track.order //order++;\n                    trackJson.push(config)\n                }\n            } catch (e) {\n                console.error(`Track: ${track.name}: ${e}`)\n                errors.push(`Track: ${track.name}: ${e}`)\n            }\n        }\n\n        if (errors.length > 0) {\n            let n = 1\n            let message = 'Errors encountered saving session: </br>'\n            for (let e of errors) {\n                message += ` (${n++}) ${e.toString()} <br/>`\n            }\n            throw Error(message)\n        }\n\n\n        json[\"tracks\"] = trackJson\n\n        return json        // This is an object, not a json string\n\n    }\n\n    compressedSession() {\n        const json = JSON.stringify(this.toJSON())\n        return BGZip.compressString(json)\n    }\n\n    sessionURL() {\n        const path = window.location.href.slice()\n        const idx = path.indexOf(\"?\")\n        const surl = (idx > 0 ? path.substring(0, idx) : path) + \"?sessionURL=blob:\" + this.compressedSession()\n        return surl\n    }\n\n    /**\n     * Record a mouse click on a specific viewport.   This might be the start of a drag operation.   Dragging\n     * (panning) is handled here so that the mouse can move out of a specific viewport (e.g. stray into another\n     * track) without halting the drag.\n     *\n     * @param e\n     * @param viewport\n     */\n    mouseDownOnViewport(e, viewport) {\n\n        var coords\n        coords = DOMUtils.pageCoordinates(e)\n        this.vpMouseDown = {\n            viewport,\n            lastMouseX: coords.x,\n            mouseDownX: coords.x,\n            lastMouseY: coords.y,\n            mouseDownY: coords.y,\n            referenceFrame: viewport.referenceFrame\n        }\n    };\n\n    cancelTrackPan() {\n\n        const dragObject = this.dragObject\n        this.dragObject = undefined\n        this.isScrolling = false\n        this.vpMouseDown = undefined\n\n        if (dragObject && dragObject.viewport.referenceFrame.start !== dragObject.start) {\n            this.updateViews()\n            this.fireEvent('trackdragend')\n        }\n    }\n\n    isTrackPanning() {\n        return this.dragObject\n    }\n\n    isSoftclipped() {\n        const result = this.trackViews.find(tv => tv.track.showSoftClips === true)\n        return result !== undefined\n    }\n\n\n    /**\n     * Track drag here refers to vertical dragging to reorder tracks, not horizontal panning.\n     *\n     * @param trackView\n     */\n    startTrackDrag(trackView) {\n\n        this.dragTrack = trackView\n\n    }\n\n    /**\n     * Track drag here refers to vertical dragging to reorder tracks, not horizontal panning.\n     *\n     * @param dragDestination\n     */\n    updateTrackDrag(dragDestination) {\n\n        if (dragDestination && this.dragTrack) {\n\n            const dragged = this.dragTrack\n            const indexDestination = this.trackViews.indexOf(dragDestination)\n            const indexDragged = this.trackViews.indexOf(dragged)\n            const trackViews = this.trackViews\n\n            trackViews[indexDestination] = dragged\n            trackViews[indexDragged] = dragDestination\n\n            const newOrder = this.trackViews[indexDestination].track.order\n            this.trackViews[indexDragged].track.order = newOrder\n\n            const nTracks = trackViews.length\n            let lastOrder = newOrder\n\n            if (indexDestination < indexDragged) {\n                // Displace tracks below\n\n                for (let i = indexDestination + 1; i < nTracks; i++) {\n                    const track = trackViews[i].track\n                    if (track.order <= lastOrder) {\n                        track.order = Math.min(Number.MAX_SAFE_INTEGER, lastOrder + 1)\n                        lastOrder = track.order\n                    } else {\n                        break\n                    }\n                }\n            } else {\n                // Displace tracks above.  First track (index 0) is \"ruler\"\n                for (let i = indexDestination - 1; i > 0; i--) {\n                    const track = trackViews[i].track\n                    if (track.order >= lastOrder) {\n                        track.order = Math.max(-Number.MAX_SAFE_INTEGER, lastOrder - 1)\n                        lastOrder = track.order\n                    } else {\n                        break\n                    }\n                }\n            }\n            this.reorderTracks()\n        }\n    }\n\n    /**\n     * End vertical dragging of tracks (i.e. track re-order, not horizontal panning of data)\n     */\n    endTrackDrag() {\n        if (this.dragTrack) {\n            // this.dragTrack.$trackDragScrim.hide();\n            this.dragTrack = undefined\n            this.fireEvent('trackorderchanged', [this.getTrackOrder()])\n        } else {\n            this.dragTrack = undefined\n        }\n    }\n\n    /**\n     * Mouse handlers to support drag (pan)\n     */\n    addMouseHandlers() {\n        this.addWindowResizeHandler()\n        this.addRootMouseUpHandler()\n        this.addRootMouseLeaveHandler()\n        this.addColumnContainerEventHandlers()\n    }\n\n    removeMouseHandlers() {\n        this.removeWindowResizeHandler()\n        this.removeRootMouseUpHandler()\n        this.removeRootMouseLeaveHandler()\n        this.removeColumnContainerEventHandlers()\n    }\n\n    addWindowResizeHandler() {\n        // Create a copy of the prototype \"resize\" function bound to this instance.  Neccessary to support removing.\n        this.boundWindowResizeHandler = resize.bind(this)\n        window.addEventListener('resize', this.boundWindowResizeHandler)\n    }\n\n    removeWindowResizeHandler() {\n        window.removeEventListener('resize', this.boundWindowResizeHandler)\n    }\n\n    addRootMouseUpHandler() {\n        this.boundRootMouseUpHandler = mouseUpOrLeave.bind(this)\n        this.root.addEventListener('mouseup', this.boundRootMouseUpHandler)\n    }\n\n    removeRootMouseUpHandler() {\n        this.root.removeEventListener('mouseup', this.boundRootMouseUpHandler)\n    }\n\n    addRootMouseLeaveHandler() {\n        this.boundRootMouseLeaveHandler = mouseUpOrLeave.bind(this)\n        this.root.addEventListener('mouseleave', this.boundRootMouseLeaveHandler)\n    }\n\n    removeRootMouseLeaveHandler() {\n        this.root.removeEventListener('mouseleave', this.boundRootMouseLeaveHandler)\n    }\n\n    addColumnContainerEventHandlers() {\n        this.boundColumnContainerMouseMoveHandler = handleMouseMove.bind(this)\n        this.boundColumnContainerTouchMoveHandler = handleMouseMove.bind(this)\n        this.boundColumnContainerMouseLeaveHandler = mouseUpOrLeave.bind(this)\n        this.boundColumnContainerMouseUpHandler = mouseUpOrLeave.bind(this)\n        this.boundColumnContainerTouchEndHandler = mouseUpOrLeave.bind(this)\n\n        this.columnContainer.addEventListener('mousemove', this.boundColumnContainerMouseMoveHandler)\n        this.columnContainer.addEventListener('touchmove', this.boundColumnContainerTouchMoveHandler)\n\n        this.columnContainer.addEventListener('mouseleave', this.boundColumnContainerMouseLeaveHandler)\n\n        this.columnContainer.addEventListener('mouseup', this.boundColumnContainerMouseUpHandler)\n        this.columnContainer.addEventListener('touchend', this.boundColumnContainerTouchEndHandler)\n    }\n\n    removeColumnContainerEventHandlers() {\n        this.columnContainer.removeEventListener('mousemove', this.boundColumnContainerMouseMoveHandler)\n        this.columnContainer.removeEventListener('touchmove', this.boundColumnContainerTouchMoveHandler)\n\n        this.columnContainer.removeEventListener('mouseleave', this.boundColumnContainerMouseLeaveHandler)\n\n        this.columnContainer.removeEventListener('mouseup', this.boundColumnContainerMouseUpHandler)\n        this.columnContainer.removeEventListener('touchend', this.boundColumnContainerTouchEndHandler)\n    }\n\n    static uncompressSession(url) {\n\n        let bytes\n        if (url.indexOf('/gzip;base64') > 0) {\n            //Proper dataURI\n            bytes = BGZip.decodeDataURI(url)\n            let json = ''\n            for (let b of bytes) {\n                json += String.fromCharCode(b)\n            }\n            return json\n        } else {\n\n            let enc = url.substring(5)\n            return BGZip.uncompressString(enc)\n        }\n    }\n\n    createCircularView(container, show) {\n        show = show === true   // convert undefined to boolean\n        this.circularView = createCircularView(container, this)\n        this.circularViewControl = new CircularViewControl(this.$toggle_button_container.get(0), this)\n        this.circularView.setAssembly({\n            name: this.genome.id,\n            id: this.genome.id,\n            chromosomes: makeCircViewChromosomes(this.genome)\n        })\n        this.circularViewVisible = show\n        return this.circularView\n    }\n\n    get circularViewVisible() {\n        return this.circularView !== undefined && this.circularView.visible\n    }\n\n    set circularViewVisible(isVisible) {\n        if (this.circularView) {\n            this.circularView.visible = isVisible\n            this.circularViewControl.setState(isVisible)\n        }\n    }\n}\n\n/**\n * Function called win window is resized, or visibility changed (e.g. \"show\" from a tab).  This is a function rather\n * than class method because it needs to be copied and bound to specific instances of browser to support listener\n * removal\n *\n * @returns {Promise<void>}\n */\nasync function resize() {\n\n    if(!this.referenceFrameList) return\n\n    const viewportWidth = this.calculateViewportWidth(this.referenceFrameList.length)\n\n    for (let referenceFrame of this.referenceFrameList) {\n\n        const index = this.referenceFrameList.indexOf(referenceFrame)\n\n        const {chr, genome} = referenceFrame\n\n        const {bpLength} = genome.getChromosome(referenceFrame.chr)\n\n        const viewportWidthBP = referenceFrame.toBP(viewportWidth)\n\n        // viewportWidthBP > bpLength occurs when locus is full chromosome and user widens browser\n        if (GenomeUtils.isWholeGenomeView(chr) || viewportWidthBP > bpLength) {\n            // console.log(`${ Date.now() } Recalc referenceFrame(${ index }) bpp. viewport ${ StringUtils.numberFormatter(viewportWidthBP) } > ${ StringUtils.numberFormatter(bpLength) }.`)\n            referenceFrame.bpPerPixel = bpLength / viewportWidth\n        } else {\n            // console.log(`${ Date.now() } Recalc referenceFrame(${ index }) end.`)\n            referenceFrame.end = referenceFrame.start + referenceFrame.toBP(viewportWidth)\n        }\n\n        for (let {viewports} of this.trackViews) {\n            viewports[index].setWidth(viewportWidth)\n        }\n\n    }\n\n    this.updateUIWithReferenceFrameList()\n\n    //TODO -- update view only if needed.  Reducing size never needed.  Increasing size maybe\n\n    await this.updateViews(true)\n}\n\n\nfunction handleMouseMove(e) {\n\n    e.preventDefault()\n\n    const {x, y} = DOMUtils.pageCoordinates(e)\n\n    if (this.vpMouseDown) {\n\n        const {viewport, referenceFrame} = this.vpMouseDown\n\n        // Determine direction,  true == horizontal\n        const horizontal = Math.abs((x - this.vpMouseDown.mouseDownX)) > Math.abs((y - this.vpMouseDown.mouseDownY))\n\n        if (!this.dragObject && !this.isScrolling) {\n            if (horizontal) {\n                if (this.vpMouseDown.mouseDownX && Math.abs(x - this.vpMouseDown.mouseDownX) > this.constants.dragThreshold) {\n                    this.dragObject = {viewport, start: referenceFrame.start}\n                }\n            } else {\n                if (this.vpMouseDown.mouseDownY &&\n                    Math.abs(y - this.vpMouseDown.mouseDownY) > this.constants.scrollThreshold) {\n                    // Scrolling => dragging track vertically\n                    this.isScrolling = true\n                    const viewportHeight = viewport.$viewport.height()\n                    const contentHeight = viewport.trackView.maxViewportContentHeight()\n                    this.vpMouseDown.r = viewportHeight / contentHeight\n                }\n            }\n        }\n\n        if (this.dragObject) {\n            const clampDrag = !this.isSoftclipped()\n            let deltaX = this.vpMouseDown.lastMouseX - x\n            const viewChanged = referenceFrame.shiftPixels(deltaX, viewport.$viewport.width(), clampDrag)\n            if (viewChanged) {\n                this.updateViews()\n            }\n            this.fireEvent('trackdrag')\n        }\n\n\n        if (this.isScrolling) {\n            const delta = this.vpMouseDown.r * (this.vpMouseDown.lastMouseY - y)\n            viewport.trackView.moveScroller(delta)\n        }\n\n\n        this.vpMouseDown.lastMouseX = x\n        this.vpMouseDown.lastMouseY = y\n    }\n}\n\nfunction mouseUpOrLeave(e) {\n    this.cancelTrackPan()\n    this.endTrackDrag()\n}\n\n\nfunction getInitialLocus(locus, genome) {\n    if (locus) {\n        return Array.isArray(locus) ? locus.join(' ') : locus\n    } else {\n        return genome.getHomeChromosomeName()\n    }\n}\n\nfunction logo() {\n\n    return $(\n        '<svg width=\"690px\" height=\"324px\" viewBox=\"0 0 690 324\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">' +\n        '<title>IGV</title>' +\n        '<g id=\"Page-1\" stroke=\"none\" stroke-width=\"1\" fill=\"none\" fill-rule=\"evenodd\">' +\n        '<g id=\"IGV\" fill=\"#666666\">' +\n        '<polygon id=\"Path\" points=\"379.54574 8.00169252 455.581247 8.00169252 515.564813 188.87244 532.884012 253.529506 537.108207 253.529506 554.849825 188.87244 614.833392 8.00169252 689.60164 8.00169252 582.729511 320.722144 486.840288 320.722144\"></polygon>' +\n        '<path d=\"M261.482414,323.793286 C207.975678,323.793286 168.339046,310.552102 142.571329,284.069337 C116.803612,257.586572 103.919946,217.158702 103.919946,162.784513 C103.919946,108.410325 117.437235,67.8415913 144.472217,41.0770945 C171.507199,14.3125977 212.903894,0.930550071 268.663545,0.930550071 C283.025879,0.930550071 298.232828,1.84616386 314.284849,3.6774189 C330.33687,5.50867394 344.839793,7.97378798 357.794056,11.072835 L357.794056,68.968378 C339.48912,65.869331 323.578145,63.5450806 310.060654,61.9955571 C296.543163,60.4460336 284.574731,59.6712835 274.154998,59.6712835 C255.850062,59.6712835 240.502308,61.4320792 228.111274,64.9537236 C215.720241,68.4753679 205.793482,74.2507779 198.330701,82.2801269 C190.867919,90.309476 185.587729,100.87425 182.48997,113.974767 C179.392212,127.075284 177.843356,143.345037 177.843356,162.784513 C177.843356,181.942258 179.251407,198.000716 182.067551,210.960367 C184.883695,223.920018 189.671068,234.41436 196.429813,242.443709 C203.188559,250.473058 212.059279,256.178037 223.042241,259.558815 C234.025202,262.939594 247.683295,264.629958 264.01693,264.629958 C268.241146,264.629958 273.098922,264.489094 278.590403,264.207362 C284.081883,263.925631 289.643684,263.50304 295.275972,262.939577 L295.275972,159.826347 L361.595831,159.826347 L361.595831,308.579859 C344.698967,313.087564 327.239137,316.750019 309.215815,319.567334 C291.192494,322.38465 275.281519,323.793286 261.482414,323.793286 L261.482414,323.793286 L261.482414,323.793286 Z\" id=\"Path\"></path>;' +\n        '<polygon id=\"Path\" points=\"0.81355666 5.00169252 73.0472883 5.00169252 73.0472883 317.722144 0.81355666 317.722144\"></polygon>' +\n        '</g> </g> </svg>'\n    )\n}\n\nfunction toggleTrackLabels(trackViews, isVisible) {\n\n    for (let {viewports} of trackViews) {\n        for (let viewport of viewports) {\n            if (viewport.$trackLabel) {\n                if (0 === viewports.indexOf(viewport) && true === isVisible) {\n                    viewport.$trackLabel.show()\n                } else {\n                    viewport.$trackLabel.hide()\n                }\n            }\n        }\n    }\n}\n\nasync function searchWebService(browser, locus, searchConfig) {\n\n    let path = searchConfig.url.replace(\"$FEATURE$\", locus.toUpperCase())\n    if (path.indexOf(\"$GENOME$\") > -1) {\n        path = path.replace(\"$GENOME$\", (browser.genome.id ? browser.genome.id : \"hg19\"))\n    }\n    const result = await igvxhr.loadString(path)\n    return {result: result, locusSearchString: locus}\n}\n\nexport {searchWebService}\nexport default Browser\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {GoogleAuth, igvxhr} from '../node_modules/igv-utils/src/index.js'\nimport Browser from \"./browser.js\"\nimport GenomeUtils from \"./genome/genome.js\"\n\nlet allBrowsers = []\n\n/**\n * Create an igv.browser instance.  This object defines the public API for interacting with the genome browser.\n *\n * @param parentDiv - DOM tree root\n * @param config - configuration options.\n *\n */\nasync function createBrowser(parentDiv, config) {\n\n    if (undefined === config) config = {}\n\n    // Initialize pre-defined genomes.  The genome list is shared among all browser instances\n    if (!GenomeUtils.KNOWN_GENOMES) {\n        await GenomeUtils.initializeGenomes(config)\n    }\n\n    setDefaults(config)\n\n    if (config.queryParametersSupported) {\n        extractQuery(config)\n    }\n    if (config.apiKey) {\n        igvxhr.setApiKey(config.apiKey)\n    }\n    if (config.oauthToken) {\n        igvxhr.setOauthToken(config.oauthToken)\n    }\n    if (config.clientId && (!GoogleAuth.isInitialized())) {\n        await GoogleAuth.init({\n            clientId: config.clientId,\n            apiKey: config.apiKey,\n            scope: 'https://www.googleapis.com/auth/userinfo.profile'\n        })\n    }\n\n    // Create browser\n    const browser = new Browser(config, parentDiv)\n    allBrowsers.push(browser)\n\n    // Load initial session\n    if (config.sessionURL) {\n        await browser.loadSession({\n            url: config.sessionURL\n        })\n    } else {\n        await browser.loadSessionObject(config)\n    }\n\n    browser.navbarManager.navbarDidResize(browser.$navigation.width())\n\n    return browser\n\n}\n\nfunction removeBrowser(browser) {\n    browser.dispose()\n    browser.root.remove()\n    allBrowsers = allBrowsers.filter(item => item !== browser)\n}\n\nfunction removeAllBrowsers() {\n    for (let browser of allBrowsers) {\n        browser.dispose()\n        browser.root.remove()\n    }\n    allBrowsers = []\n}\n\nfunction getAllBrowsers() {\n    return allBrowsers;\n}\n\n/**\n * This function provided so clients can inform igv of a visibility change, typically when an igv instance is\n * made visible from a tab, accordion, or similar widget.\n */\nasync function visibilityChange() {\n    for (let browser of allBrowsers) {\n        await browser.visibilityChange()\n    }\n}\n\nfunction setDefaults(config) {\n\n    if (undefined === config.minimumBases) {\n        config.minimumBases = 40\n    }\n\n    if (undefined === config.showIdeogram) {\n        config.showIdeogram = true\n    }\n\n    if (undefined === config.showCircularView) {\n        config.showCircularView = false\n    }\n\n    if (undefined === config.showCircularViewButton) {\n        config.showCircularViewButton = false\n    }\n\n    if (undefined === config.showTrackLabelButton) {\n        config.showTrackLabelButton = true\n    }\n\n    if (undefined === config.showTrackLabels) {\n        config.showTrackLabels = true\n    }\n\n    if (undefined === config.showROITableButton) {\n        config.showROITableButton = false\n    }\n\n    if (undefined === config.showROITable) {\n        config.showROITable = false\n    }\n\n    if (undefined === config.showCursorTrackingGuideButton) {\n        config.showCursorTrackingGuideButton = true\n    }\n\n\n    if (undefined === config.showCursorGuide) {\n        config.showCursorGuide = config.showCursorTrackingGuide || false   // showCursorTrackingGuide is a synonym\n    }\n\n    if (undefined === config.showCenterGuideButton) {\n        config.showCenterGuideButton = true\n    }\n\n    if (undefined === config.showCenterGuide) {\n        config.showCenterGuide = false\n    }\n\n    if (undefined === config.showSampleNames) {\n        config.showSampleNames = false\n    }\n\n    if (undefined === config.showSVGButton) {\n        config.showSVGButton = true\n    }\n\n    if (config.showControls === undefined) {\n        config.showControls = true\n    }\n\n    if (config.showNavigation === undefined) {\n        config.showNavigation = true\n    }\n\n    if (config.showRuler === undefined) {\n        config.showRuler = true\n    }\n\n    if (config.flanking === undefined) {\n        config.flanking = 1000\n    }\n\n    if (config.pairsSupported === undefined) {\n        config.pairsSupported = true\n    }\n\n    if (!config.tracks) {\n        config.tracks = []\n    }\n\n}\n\n\nfunction extractQuery(config) {\n\n    var i1, i2, i, j, s, query, tokens, uri, key, value\n\n    uri = window.location.href\n\n    query = {}\n    i1 = uri.indexOf(\"?\")\n    i2 = uri.lastIndexOf(\"#\")\n\n    let files\n    let indexURLs\n    let names\n    if (i1 >= 0) {\n        if (i2 < 0) i2 = uri.length\n        for (i = i1 + 1; i < i2;) {\n            j = uri.indexOf(\"&\", i)\n            if (j < 0) j = i2\n\n            s = uri.substring(i, j)\n            tokens = s.split(\"=\", 2)\n\n            if (tokens.length === 2) {\n                key = tokens[0]\n                value = decodeURIComponent(tokens[1])\n\n                if ('file' === key) {\n                    // IGV desktop style file parameter\n                    files = value.split(',')\n                } else if ('index' === key) {\n                    // IGV desktop style index parameter\n                    indexURLs = value.split(',')\n                } else if ('name' === key) {\n                    // IGV desktop style index parameter\n                    names = value.split(',')\n                } else if ('genome' === key && ((value.startsWith(\"https://\") || value.startsWith(\"http://\")) && !value.endsWith(\".json\"))) {\n                    // IGV desktop compatibility -- assuming url to fasta\n                    config['reference'] = {\n                        fastaURL: value,\n                        indexURL: value + \".fai\"\n                    }\n                } else {\n                    config[key] = value\n                }\n                i = j + 1\n            } else {\n                i++;\n            }\n        }\n    }\n\n    if (files) {\n\n        if (!config.tracks)\n            config.tracks = []\n        for (let i = 0; i < files.length; i++) {\n\n            if (files[i].endsWith(\".xml\") || files[i].endsWith(\".json\")) {\n                config.sessionURL = files[i]\n                break\n            }\n\n            const trackConfig = {url: files[i]}\n            if (indexURLs && indexURLs.length > i) {\n                trackConfig.indexURL = indexURLs[i]\n            }\n            if (names && names.length > i) {\n                trackConfig.name = names[i]\n            }\n            config.tracks.push(trackConfig)\n        }\n    }\n\n    return query\n}\n\n\nasync function createTrack(config, browser) {\n    return await Browser.prototype.createTrack.call(browser, config)\n}\n\nexport {createTrack, createBrowser, removeBrowser, removeAllBrowsers, getAllBrowsers, visibilityChange}\n","// Defines the top-level API for the igv module\n\nimport MenuUtils from \"./ui/menuUtils.js\"\nimport DataRangeDialog from \"./ui/dataRangeDialog.js\"\nimport IGVGraphics from \"./igv-canvas.js\"\nimport {createBrowser, createTrack, removeAllBrowsers, removeBrowser, visibilityChange} from './igv-create.js'\nimport embedCss from \"./embedCss.js\"\nimport version from \"./version.js\"\nimport * as TrackUtils from \"./util/trackUtils.js\"\nimport {registerFileFormats} from \"./util/trackUtils.js\"\nimport {igvxhr} from \"../node_modules/igv-utils/src/index.js\"\n\nconst setApiKey = igvxhr.setApiKey\n\nembedCss()\n\nfunction setGoogleOauthToken(accessToken) {\n    return igvxhr.setOauthToken(accessToken)\n}\n\nfunction setOauthToken(accessToken, host) {\n    return igvxhr.setOauthToken(accessToken, host)\n}\n\n// Backward compatibility\nconst oauth = igvxhr.oauth\n\nexport default {\n    TrackUtils,\n    IGVGraphics,\n    MenuUtils,\n    DataRangeDialog,\n    createTrack,\n    createBrowser,\n    removeBrowser,\n    removeAllBrowsers,\n    visibilityChange,\n    setGoogleOauthToken,\n    setOauthToken,\n    oauth,\n    version,\n    setApiKey,\n    registerFileFormats\n}\n\n","function embedCSS() {\n\n    var css = '.igv-navbar {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-between;\\n  align-items: center;\\n  box-sizing: border-box;\\n  width: 100%;\\n  color: #444;\\n  font-size: 12px;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-weight: 400;\\n  line-height: 32px;\\n  padding-left: 8px;\\n  padding-right: 8px;\\n  margin-top: 2px;\\n  margin-bottom: 6px;\\n  height: 32px;\\n  border-style: solid;\\n  border-radius: 3px;\\n  border-width: thin;\\n  border-color: #bfbfbf;\\n  background-color: #f3f3f3;\\n}\\n.igv-navbar .igv-navbar-left-container {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-between;\\n  align-items: center;\\n  height: 32px;\\n  line-height: 32px;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-logo {\\n  width: 34px;\\n  height: 32px;\\n  margin-right: 8px;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-current-genome {\\n  height: 32px;\\n  margin-left: 4px;\\n  margin-right: 4px;\\n  user-select: none;\\n  line-height: 32px;\\n  vertical-align: middle;\\n  text-align: center;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-between;\\n  align-items: center;\\n  height: 100%;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-chromosome-select-widget-container {\\n  display: flex;\\n  flex-flow: column;\\n  flex-wrap: nowrap;\\n  justify-content: space-around;\\n  align-items: center;\\n  height: 100%;\\n  width: 125px;\\n  margin-right: 4px;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-chromosome-select-widget-container select {\\n  display: block;\\n  cursor: pointer;\\n  width: 100px;\\n  height: 75%;\\n  outline: none;\\n  font-size: 12px;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-weight: 400;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-between;\\n  align-items: center;\\n  margin-left: 8px;\\n  height: 22px;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n  width: 210px;\\n  height: 22px;\\n  line-height: 22px;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container input.igv-search-input {\\n  cursor: text;\\n  width: 85%;\\n  height: 22px;\\n  line-height: 22px;\\n  font-size: 12px;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-weight: 400;\\n  text-align: left;\\n  padding-left: 8px;\\n  margin-right: 8px;\\n  outline: none;\\n  border-style: solid;\\n  border-radius: 3px;\\n  border-width: thin;\\n  border-color: #bfbfbf;\\n  background-color: white;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container .igv-search-icon-container {\\n  cursor: pointer;\\n  height: 16px;\\n  width: 16px;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-windowsize-panel-container {\\n  margin-left: 4px;\\n  user-select: none;\\n}\\n.igv-navbar .igv-navbar-right-container {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-between;\\n  align-items: center;\\n  height: 32px;\\n  line-height: 32px;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-between;\\n  align-items: center;\\n  height: 100%;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container div {\\n  margin-left: 0;\\n  margin-right: 4px;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container div:last-child {\\n  margin-left: 0;\\n  margin-right: 0;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container-750 {\\n  display: none;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget {\\n  color: #737373;\\n  font-size: 18px;\\n  height: 32px;\\n  line-height: 32px;\\n  margin-left: 8px;\\n  user-select: none;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-end;\\n  align-items: center;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div {\\n  cursor: pointer;\\n  margin-left: unset;\\n  margin-right: unset;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:first-child {\\n  height: 24px;\\n  width: 24px;\\n  margin-left: unset;\\n  margin-right: 8px;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:last-child {\\n  height: 24px;\\n  width: 24px;\\n  margin-left: 8px;\\n  margin-right: unset;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:nth-child(even) {\\n  display: block;\\n  height: fit-content;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget input {\\n  display: block;\\n  width: 125px;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget svg {\\n  display: block;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 {\\n  color: #737373;\\n  font-size: 18px;\\n  height: 32px;\\n  line-height: 32px;\\n  margin-left: 8px;\\n  user-select: none;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-end;\\n  align-items: center;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div {\\n  cursor: pointer;\\n  margin-left: unset;\\n  margin-right: unset;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:first-child {\\n  height: 24px;\\n  width: 24px;\\n  margin-left: unset;\\n  margin-right: 8px;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:last-child {\\n  height: 24px;\\n  width: 24px;\\n  margin-left: 8px;\\n  margin-right: unset;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:nth-child(even) {\\n  width: 0;\\n  height: 0;\\n  display: none;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 input {\\n  width: 0;\\n  height: 0;\\n  display: none;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 svg {\\n  display: block;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-hidden {\\n  display: none;\\n}\\n\\n.igv-navbar-button {\\n  display: block;\\n  box-sizing: unset;\\n  padding-left: 6px;\\n  padding-right: 6px;\\n  height: 18px;\\n  text-transform: capitalize;\\n  user-select: none;\\n  line-height: 18px;\\n  text-align: center;\\n  vertical-align: middle;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 11px;\\n  font-weight: 200;\\n  color: #737373;\\n  background-color: #f3f3f3;\\n  border-color: #737373;\\n  border-style: solid;\\n  border-width: thin;\\n  border-radius: 6px;\\n}\\n\\n.igv-navbar-button-clicked {\\n  color: white;\\n  background-color: #737373;\\n}\\n\\n.igv-navbar-button:hover {\\n  cursor: pointer;\\n}\\n\\n.igv-zoom-in-notice-container {\\n  z-index: 1024;\\n  position: absolute;\\n  top: 8px;\\n  left: 50%;\\n  transform: translate(-50%, 0%);\\n  display: flex;\\n  flex-direction: row;\\n  flex-wrap: nowrap;\\n  justify-content: center;\\n  align-items: center;\\n  background-color: white;\\n}\\n.igv-zoom-in-notice-container > div {\\n  padding-left: 4px;\\n  padding-right: 4px;\\n  padding-top: 2px;\\n  padding-bottom: 2px;\\n  width: 100%;\\n  height: 100%;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 14px;\\n  font-weight: 400;\\n  color: #3f3f3f;\\n}\\n\\n.igv-zoom-in-notice {\\n  position: absolute;\\n  top: 10px;\\n  left: 50%;\\n}\\n.igv-zoom-in-notice div {\\n  position: relative;\\n  left: -50%;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: medium;\\n  font-weight: 400;\\n  color: #3f3f3f;\\n  background-color: rgba(255, 255, 255, 0.51);\\n  z-index: 64;\\n}\\n\\n.igv-container-spinner {\\n  position: absolute;\\n  top: 90%;\\n  left: 50%;\\n  transform: translate(-50%, -50%);\\n  z-index: 1024;\\n  width: 24px;\\n  height: 24px;\\n  pointer-events: none;\\n  color: #737373;\\n}\\n\\n.igv-multi-locus-close-button {\\n  position: absolute;\\n  top: 2px;\\n  right: 0;\\n  padding-left: 2px;\\n  padding-right: 2px;\\n  width: 12px;\\n  height: 12px;\\n  color: #666666;\\n  background-color: white;\\n  z-index: 1000;\\n}\\n.igv-multi-locus-close-button > svg {\\n  vertical-align: top;\\n}\\n\\n.igv-multi-locus-close-button:hover {\\n  cursor: pointer;\\n  color: #434343;\\n}\\n\\n.igv-multi-locus-ruler-label {\\n  z-index: 64;\\n  position: absolute;\\n  top: 2px;\\n  left: 0;\\n  width: 100%;\\n  height: 12px;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: center;\\n  align-items: center;\\n}\\n.igv-multi-locus-ruler-label > div {\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 12px;\\n  color: rgb(16, 16, 16);\\n  background-color: white;\\n}\\n.igv-multi-locus-ruler-label > div {\\n  cursor: pointer;\\n}\\n\\n.igv-multi-locus-ruler-label-square-dot {\\n  z-index: 64;\\n  position: absolute;\\n  left: 50%;\\n  top: 5%;\\n  transform: translate(-50%, 0%);\\n  background-color: white;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-multi-locus-ruler-label-square-dot > div:first-child {\\n  width: 14px;\\n  height: 14px;\\n}\\n.igv-multi-locus-ruler-label-square-dot > div:last-child {\\n  margin-left: 16px;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 14px;\\n  font-weight: 400;\\n  color: rgb(16, 16, 16);\\n}\\n\\n.igv-ruler-sweeper {\\n  display: none;\\n  pointer-events: none;\\n  position: absolute;\\n  top: 26px;\\n  bottom: 0;\\n  left: 0;\\n  width: 0;\\n  z-index: 99999;\\n  background-color: rgba(68, 134, 247, 0.25);\\n}\\n\\n.igv-ruler-tooltip {\\n  pointer-events: none;\\n  z-index: 128;\\n  position: absolute;\\n  top: 0;\\n  left: 0;\\n  width: 1px;\\n  height: 32px;\\n  background-color: transparent;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-ruler-tooltip > div {\\n  pointer-events: none;\\n  width: 128px;\\n  height: auto;\\n  padding: 1px;\\n  color: #373737;\\n  font-size: 10px;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-weight: 400;\\n  background-color: white;\\n  border-style: solid;\\n  border-width: thin;\\n  border-color: #373737;\\n}\\n\\n.igv-track-label {\\n  position: absolute;\\n  left: 8px;\\n  top: 8px;\\n  width: auto;\\n  height: auto;\\n  max-width: 50%;\\n  padding-left: 4px;\\n  padding-right: 4px;\\n  white-space: nowrap;\\n  overflow: hidden;\\n  text-overflow: ellipsis;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: small;\\n  font-weight: 400;\\n  text-align: center;\\n  user-select: none;\\n  -moz-user-select: none;\\n  -webkit-user-select: none;\\n  border-color: #444;\\n  border-radius: 2px;\\n  border-style: solid;\\n  border-width: thin;\\n  background-color: white;\\n  z-index: 128;\\n  cursor: pointer;\\n}\\n\\n.igv-track-label:hover,\\n.igv-track-label:focus,\\n.igv-track-label:active {\\n  background-color: #e8e8e8;\\n}\\n\\n.igv-track-label-popup-shim {\\n  padding-left: 8px;\\n  padding-right: 8px;\\n  padding-top: 4px;\\n}\\n\\n.igv-center-line {\\n  display: none;\\n  pointer-events: none;\\n  position: absolute;\\n  top: 0;\\n  bottom: 0;\\n  left: 50%;\\n  transform: translateX(-50%);\\n  z-index: 8;\\n  user-select: none;\\n  -moz-user-select: none;\\n  -webkit-user-select: none;\\n  border-left-style: dashed;\\n  border-left-width: thin;\\n  border-right-style: dashed;\\n  border-right-width: thin;\\n}\\n\\n.igv-center-line-wide {\\n  background-color: rgba(0, 0, 0, 0);\\n  border-left-color: rgba(127, 127, 127, 0.51);\\n  border-right-color: rgba(127, 127, 127, 0.51);\\n}\\n\\n.igv-center-line-thin {\\n  background-color: rgba(0, 0, 0, 0);\\n  border-left-color: rgba(127, 127, 127, 0.51);\\n  border-right-color: rgba(0, 0, 0, 0);\\n}\\n\\n.igv-cursor-guide-horizontal {\\n  display: none;\\n  pointer-events: none;\\n  user-select: none;\\n  -moz-user-select: none;\\n  -webkit-user-select: none;\\n  position: absolute;\\n  left: 0;\\n  right: 0;\\n  top: 50%;\\n  height: 1px;\\n  z-index: 1;\\n  margin-left: 50px;\\n  margin-right: 54px;\\n  border-top-style: dotted;\\n  border-top-width: thin;\\n  border-top-color: rgba(127, 127, 127, 0.76);\\n}\\n\\n.igv-cursor-guide-vertical {\\n  pointer-events: none;\\n  user-select: none;\\n  -moz-user-select: none;\\n  -webkit-user-select: none;\\n  position: absolute;\\n  top: 0;\\n  bottom: 0;\\n  left: 50%;\\n  width: 1px;\\n  z-index: 1;\\n  border-left-style: dotted;\\n  border-left-width: thin;\\n  border-left-color: rgba(127, 127, 127, 0.76);\\n  display: none;\\n}\\n\\n.igv-user-feedback {\\n  position: fixed;\\n  top: 50%;\\n  left: 50%;\\n  transform: translate(-50%, -50%);\\n  width: 512px;\\n  height: 360px;\\n  z-index: 2048;\\n  background-color: white;\\n  border-color: #a2a2a2;\\n  border-style: solid;\\n  border-width: thin;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: medium;\\n  font-weight: 400;\\n  color: #444;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-user-feedback div:first-child {\\n  position: relative;\\n  height: 24px;\\n  width: 100%;\\n  background-color: white;\\n  border-bottom-color: #a2a2a2;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n}\\n.igv-user-feedback div:first-child div {\\n  position: absolute;\\n  top: 2px;\\n  width: 16px;\\n  height: 16px;\\n  background-color: transparent;\\n}\\n.igv-user-feedback div:first-child div:first-child {\\n  left: 8px;\\n}\\n.igv-user-feedback div:first-child div:last-child {\\n  cursor: pointer;\\n  right: 8px;\\n}\\n.igv-user-feedback div:last-child {\\n  width: 100%;\\n  height: calc(100% - 24px);\\n  border-width: 0;\\n}\\n.igv-user-feedback div:last-child div {\\n  width: auto;\\n  height: auto;\\n  margin: 8px;\\n}\\n\\n.igv-generic-dialog-container {\\n  position: absolute;\\n  top: 0;\\n  left: 0;\\n  width: 300px;\\n  height: 200px;\\n  border-color: #7F7F7F;\\n  border-radius: 4px;\\n  border-style: solid;\\n  border-width: thin;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: medium;\\n  font-weight: 400;\\n  z-index: 2048;\\n  background-color: white;\\n  display: flex;\\n  flex-flow: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-header {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-end;\\n  align-items: center;\\n  width: 100%;\\n  height: 24px;\\n  cursor: move;\\n  border-top-left-radius: 4px;\\n  border-top-right-radius: 4px;\\n  border-bottom-color: #7F7F7F;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n  background-color: #eee;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-header div {\\n  margin-right: 4px;\\n  margin-bottom: 2px;\\n  height: 12px;\\n  width: 12px;\\n  color: #7F7F7F;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-header div:hover {\\n  cursor: pointer;\\n  color: #444;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-one-liner {\\n  color: #373737;\\n  width: 95%;\\n  height: 24px;\\n  line-height: 24px;\\n  text-align: left;\\n  margin-top: 8px;\\n  padding-left: 8px;\\n  overflow-wrap: break-word;\\n  background-color: white;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-label-input {\\n  margin-top: 8px;\\n  width: 95%;\\n  height: 24px;\\n  color: #373737;\\n  line-height: 24px;\\n  padding-left: 8px;\\n  background-color: white;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-label-input div {\\n  width: 30%;\\n  height: 100%;\\n  font-size: 16px;\\n  text-align: right;\\n  padding-right: 8px;\\n  background-color: white;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-label-input input {\\n  display: block;\\n  height: 100%;\\n  width: 100%;\\n  padding-left: 4px;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-weight: 400;\\n  color: #373737;\\n  text-align: left;\\n  outline: none;\\n  border-style: solid;\\n  border-width: thin;\\n  border-color: #7F7F7F;\\n  background-color: white;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-label-input input {\\n  width: 50%;\\n  font-size: 16px;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-input {\\n  margin-top: 8px;\\n  width: calc(100% - 16px);\\n  height: 24px;\\n  color: #373737;\\n  line-height: 24px;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-around;\\n  align-items: center;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-input input {\\n  display: block;\\n  height: 100%;\\n  width: 100%;\\n  padding-left: 4px;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-weight: 400;\\n  color: #373737;\\n  text-align: left;\\n  outline: none;\\n  border-style: solid;\\n  border-width: thin;\\n  border-color: #7F7F7F;\\n  background-color: white;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-input input {\\n  font-size: 16px;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel {\\n  width: 100%;\\n  height: 28px;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-around;\\n  align-items: center;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div {\\n  margin-top: 32px;\\n  color: white;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 14px;\\n  font-weight: 400;\\n  width: 75px;\\n  height: 28px;\\n  line-height: 28px;\\n  text-align: center;\\n  border-color: transparent;\\n  border-style: solid;\\n  border-width: thin;\\n  border-radius: 2px;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:first-child {\\n  margin-left: 32px;\\n  margin-right: 0;\\n  background-color: #5ea4e0;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:last-child {\\n  margin-left: 0;\\n  margin-right: 32px;\\n  background-color: #c4c4c4;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:first-child:hover {\\n  cursor: pointer;\\n  background-color: #3b5c7f;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:last-child:hover {\\n  cursor: pointer;\\n  background-color: #7f7f7f;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok {\\n  width: 100%;\\n  height: 36px;\\n  margin-top: 32px;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-around;\\n  align-items: center;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok div {\\n  width: 98px;\\n  height: 36px;\\n  line-height: 36px;\\n  text-align: center;\\n  color: white;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: medium;\\n  font-weight: 400;\\n  border-color: white;\\n  border-style: solid;\\n  border-width: thin;\\n  border-radius: 4px;\\n  background-color: #2B81AF;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok div:hover {\\n  cursor: pointer;\\n  background-color: #25597f;\\n}\\n\\n.igv-generic-container {\\n  position: absolute;\\n  top: 0;\\n  left: 0;\\n  z-index: 2048;\\n  background-color: white;\\n  cursor: pointer;\\n  display: flex;\\n  flex-direction: row;\\n  flex-wrap: wrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-generic-container div:first-child {\\n  cursor: move;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-end;\\n  align-items: center;\\n  height: 24px;\\n  width: 100%;\\n  background-color: #dddddd;\\n}\\n.igv-generic-container div:first-child i {\\n  display: block;\\n  color: #5f5f5f;\\n  cursor: pointer;\\n  width: 14px;\\n  height: 14px;\\n  margin-right: 8px;\\n  margin-bottom: 4px;\\n}\\n\\n.igv-menu-popup {\\n  position: absolute;\\n  top: 0;\\n  left: 0;\\n  width: max-content;\\n  z-index: 4096;\\n  cursor: pointer;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: small;\\n  font-weight: 400;\\n  color: #4b4b4b;\\n  background: white;\\n  border-radius: 4px;\\n  border-color: #7F7F7F;\\n  border-style: solid;\\n  border-width: thin;\\n  display: flex;\\n  flex-flow: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-end;\\n  text-align: left;\\n}\\n.igv-menu-popup > div:not(:first-child) {\\n  width: 100%;\\n}\\n.igv-menu-popup > div:not(:first-child) > div {\\n  background: white;\\n}\\n.igv-menu-popup > div:not(:first-child) > div.context-menu {\\n  padding-left: 4px;\\n  padding-right: 4px;\\n}\\n.igv-menu-popup > div:not(:first-child) > div:last-child {\\n  border-bottom-left-radius: 4px;\\n  border-bottom-right-radius: 4px;\\n  border-bottom-color: transparent;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n}\\n.igv-menu-popup > div:not(:first-child) > div:hover {\\n  background: #efefef;\\n}\\n\\n.igv-menu-popup-shim {\\n  padding-left: 8px;\\n  padding-right: 8px;\\n  padding-bottom: 1px;\\n  padding-top: 1px;\\n}\\n\\n.igv-menu-popup-header {\\n  position: relative;\\n  width: 100%;\\n  height: 24px;\\n  cursor: move;\\n  border-top-color: transparent;\\n  border-top-left-radius: 4px;\\n  border-top-right-radius: 4px;\\n  border-bottom-color: #7F7F7F;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n  background-color: #eee;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-end;\\n  align-items: center;\\n}\\n.igv-menu-popup-header div {\\n  margin-right: 4px;\\n  height: 12px;\\n  width: 12px;\\n  color: #7F7F7F;\\n}\\n.igv-menu-popup-header div:hover {\\n  cursor: pointer;\\n  color: #444;\\n}\\n\\n.igv-menu-popup-check-container {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n  width: 100%;\\n  height: 20px;\\n  margin-right: 4px;\\n  background-color: transparent;\\n}\\n.igv-menu-popup-check-container div {\\n  padding-top: 2px;\\n  padding-left: 8px;\\n}\\n.igv-menu-popup-check-container div:first-child {\\n  position: relative;\\n  width: 12px;\\n  height: 12px;\\n}\\n.igv-menu-popup-check-container div:first-child svg {\\n  position: absolute;\\n  width: 12px;\\n  height: 12px;\\n}\\n\\n.igv-user-feedback {\\n  position: fixed;\\n  top: 50%;\\n  left: 50%;\\n  transform: translate(-50%, -50%);\\n  width: 512px;\\n  height: 360px;\\n  z-index: 2048;\\n  background-color: white;\\n  border-color: #a2a2a2;\\n  border-style: solid;\\n  border-width: thin;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: medium;\\n  font-weight: 400;\\n  color: #444;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-user-feedback div:first-child {\\n  position: relative;\\n  height: 24px;\\n  width: 100%;\\n  background-color: white;\\n  border-bottom-color: #a2a2a2;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n}\\n.igv-user-feedback div:first-child div {\\n  position: absolute;\\n  top: 2px;\\n  width: 16px;\\n  height: 16px;\\n  background-color: transparent;\\n}\\n.igv-user-feedback div:first-child div:first-child {\\n  left: 8px;\\n}\\n.igv-user-feedback div:first-child div:last-child {\\n  cursor: pointer;\\n  right: 8px;\\n}\\n.igv-user-feedback div:last-child {\\n  width: 100%;\\n  height: calc(100% - 24px);\\n  border-width: 0;\\n}\\n.igv-user-feedback div:last-child div {\\n  width: auto;\\n  height: auto;\\n  margin: 8px;\\n}\\n\\n.igv-loading-spinner-container {\\n  z-index: 1024;\\n  position: absolute;\\n  top: 50%;\\n  left: 50%;\\n  transform: translate(-50%, -50%);\\n  width: 32px;\\n  height: 32px;\\n  display: flex;\\n  flex-direction: row;\\n  flex-wrap: nowrap;\\n  justify-content: center;\\n  align-items: center;\\n}\\n.igv-loading-spinner-container > div {\\n  box-sizing: border-box;\\n  width: 100%;\\n  height: 100%;\\n  border-radius: 50%;\\n  border: 4px solid rgba(128, 128, 128, 0.5);\\n  border-top-color: rgb(255, 255, 255);\\n  animation: spin 1s ease-in-out infinite;\\n  -webkit-animation: spin 1s ease-in-out infinite;\\n}\\n\\n@keyframes spin {\\n  to {\\n    -webkit-transform: rotate(360deg);\\n    transform: rotate(360deg);\\n  }\\n}\\n@-webkit-keyframes spin {\\n  to {\\n    -webkit-transform: rotate(360deg);\\n    transform: rotate(360deg);\\n  }\\n}\\n.igv-roi-menu-next-gen {\\n  position: absolute;\\n  z-index: 512;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: small;\\n  font-weight: 400;\\n  color: #4b4b4b;\\n  background-color: white;\\n  width: 192px;\\n  border-radius: 4px;\\n  border-color: #7F7F7F;\\n  border-style: solid;\\n  border-width: thin;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: stretch;\\n}\\n.igv-roi-menu-next-gen > div:first-child {\\n  height: 24px;\\n  border-top-color: transparent;\\n  border-top-left-radius: 4px;\\n  border-top-right-radius: 4px;\\n  border-bottom-color: #7F7F7F;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n  background-color: #eee;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-end;\\n  align-items: center;\\n}\\n.igv-roi-menu-next-gen > div:first-child > div {\\n  margin-right: 4px;\\n  height: 12px;\\n  width: 12px;\\n  color: #7F7F7F;\\n}\\n.igv-roi-menu-next-gen > div:first-child > div:hover {\\n  cursor: pointer;\\n  color: #444;\\n}\\n.igv-roi-menu-next-gen > div:last-child {\\n  background-color: white;\\n  border-bottom-left-radius: 4px;\\n  border-bottom-right-radius: 4px;\\n  border-bottom-color: transparent;\\n  border-bottom-style: solid;\\n  border-bottom-width: 0;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: stretch;\\n  text-align: start;\\n  vertical-align: middle;\\n}\\n.igv-roi-menu-next-gen > div:last-child > div {\\n  height: 24px;\\n  padding-left: 4px;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n  border-bottom-color: #7f7f7f;\\n}\\n.igv-roi-menu-next-gen > div:last-child > div:not(:first-child):hover {\\n  background-color: rgba(127, 127, 127, 0.1);\\n}\\n.igv-roi-menu-next-gen > div:last-child div:first-child {\\n  font-style: italic;\\n  text-align: center;\\n  padding-right: 4px;\\n  white-space: nowrap;\\n  overflow: hidden;\\n  text-overflow: ellipsis;\\n}\\n.igv-roi-menu-next-gen > div:last-child > div:last-child {\\n  border-bottom-width: 0;\\n  border-bottom-color: transparent;\\n}\\n\\n.igv-roi-placeholder {\\n  font-style: normal;\\n  color: rgba(75, 75, 75, 0.6);\\n}\\n\\n.igv-roi-table {\\n  position: absolute;\\n  z-index: 1024;\\n  width: min-content;\\n  max-width: 1600px;\\n  border-color: #7f7f7f;\\n  border-radius: 4px;\\n  border-style: solid;\\n  border-width: thin;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 12px;\\n  font-weight: 400;\\n  background-color: white;\\n  display: flex;\\n  flex-flow: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: stretch;\\n  cursor: default;\\n}\\n.igv-roi-table > div {\\n  height: 24px;\\n  font-size: 14px;\\n  text-align: start;\\n  vertical-align: middle;\\n  line-height: 24px;\\n}\\n.igv-roi-table > div:first-child {\\n  border-color: transparent;\\n  border-top-left-radius: 4px;\\n  border-top-right-radius: 4px;\\n  border-top-width: 0;\\n  border-bottom-color: #7f7f7f;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n  background-color: #eee;\\n  cursor: move;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-between;\\n  align-items: center;\\n}\\n.igv-roi-table > div:first-child > div:first-child {\\n  text-align: center;\\n  white-space: nowrap;\\n  text-overflow: ellipsis;\\n  overflow: hidden;\\n  margin-left: 4px;\\n  margin-right: 4px;\\n  width: calc(100% - 4px - 12px);\\n}\\n.igv-roi-table > div:first-child > div:last-child {\\n  margin-right: 4px;\\n  margin-bottom: 2px;\\n  height: 12px;\\n  width: 12px;\\n  color: #7f7f7f;\\n}\\n.igv-roi-table > div:first-child > div:last-child > svg {\\n  display: block;\\n}\\n.igv-roi-table > div:first-child > div:last-child:hover {\\n  cursor: pointer;\\n  color: #444;\\n}\\n.igv-roi-table > .igv-roi-table-description {\\n  padding: 4px;\\n  margin-left: 4px;\\n  word-break: break-all;\\n  overflow-y: auto;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  background-color: transparent;\\n}\\n.igv-roi-table > .igv-roi-table-goto-explainer {\\n  margin-top: 5px;\\n  margin-left: 4px;\\n  color: #7F7F7F;\\n  font-style: italic;\\n  height: 24px;\\n  border-top: solid lightgray;\\n  background-color: transparent;\\n}\\n.igv-roi-table > .igv-roi-table-column-titles {\\n  height: 24px;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: stretch;\\n  align-items: stretch;\\n  padding-right: 16px;\\n  background-color: white;\\n  border-top-color: #7f7f7f;\\n  border-top-style: solid;\\n  border-top-width: thin;\\n  border-bottom-color: #7f7f7f;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n}\\n.igv-roi-table > .igv-roi-table-column-titles > div {\\n  font-size: 14px;\\n  vertical-align: middle;\\n  line-height: 24px;\\n  text-align: left;\\n  margin-left: 4px;\\n  height: 24px;\\n  overflow: hidden;\\n  text-overflow: ellipsis;\\n  border-right-color: #7f7f7f;\\n  border-right-style: solid;\\n  border-right-width: thin;\\n}\\n.igv-roi-table > .igv-roi-table-column-titles > div:last-child {\\n  border-right: unset;\\n}\\n.igv-roi-table > .igv-roi-table-row-container {\\n  overflow: auto;\\n  resize: both;\\n  max-width: 1600px;\\n  height: 360px;\\n  background-color: transparent;\\n  display: flex;\\n  flex-flow: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: stretch;\\n}\\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row {\\n  height: 24px;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: stretch;\\n  align-items: stretch;\\n}\\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row > div {\\n  font-size: 14px;\\n  vertical-align: middle;\\n  line-height: 24px;\\n  text-align: left;\\n  margin-left: 4px;\\n  height: 24px;\\n  white-space: nowrap;\\n  overflow: hidden;\\n  text-overflow: ellipsis;\\n  border-right-color: transparent;\\n  border-right-style: solid;\\n  border-right-width: thin;\\n}\\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row > div:last-child {\\n  border-right: unset;\\n}\\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row-hover {\\n  background-color: rgba(0, 0, 0, 0.04);\\n}\\n.igv-roi-table > div:last-child {\\n  height: 32px;\\n  line-height: 32px;\\n  border-top-color: #7f7f7f;\\n  border-top-style: solid;\\n  border-top-width: thin;\\n  border-bottom-color: transparent;\\n  border-bottom-left-radius: 4px;\\n  border-bottom-right-radius: 4px;\\n  border-bottom-width: 0;\\n  background-color: #eee;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-around;\\n  align-items: center;\\n}\\n\\n.igv-roi-table-row-selected {\\n  background-color: rgba(0, 0, 0, 0.125);\\n}\\n\\n.igv-roi-table-button {\\n  cursor: pointer;\\n  height: 20px;\\n  user-select: none;\\n  line-height: 20px;\\n  text-align: center;\\n  vertical-align: middle;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 13px;\\n  font-weight: 400;\\n  color: black;\\n  padding-left: 6px;\\n  padding-right: 6px;\\n  background-color: rgb(239, 239, 239);\\n  border-color: black;\\n  border-style: solid;\\n  border-width: thin;\\n  border-radius: 3px;\\n}\\n\\n.igv-roi-table-button:hover {\\n  font-weight: 400;\\n  background-color: rgba(0, 0, 0, 0.13);\\n}\\n\\n.igv-roi-region {\\n  z-index: 64;\\n  position: absolute;\\n  top: 0;\\n  bottom: 0;\\n  pointer-events: none;\\n  overflow: visible;\\n  margin-top: 44px;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: stretch;\\n}\\n.igv-roi-region > div {\\n  position: relative;\\n  width: 100%;\\n  height: 8px;\\n  pointer-events: auto;\\n}\\n\\n.igv-roi-menu {\\n  position: absolute;\\n  z-index: 1024;\\n  width: 144px;\\n  border-color: #7f7f7f;\\n  border-radius: 4px;\\n  border-style: solid;\\n  border-width: thin;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  background-color: white;\\n  display: flex;\\n  flex-flow: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: stretch;\\n}\\n.igv-roi-menu > div:not(:last-child) {\\n  border-bottom-color: rgba(128, 128, 128, 0.5);\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n}\\n.igv-roi-menu > div:first-child {\\n  border-top-left-radius: 4px;\\n  border-top-right-radius: 4px;\\n  border-top-color: transparent;\\n  border-top-style: solid;\\n  border-top-width: 0;\\n}\\n.igv-roi-menu > div:last-child {\\n  border-bottom-left-radius: 4px;\\n  border-bottom-right-radius: 4px;\\n  border-bottom-color: transparent;\\n  border-bottom-style: solid;\\n  border-bottom-width: 0;\\n}\\n\\n.igv-roi-menu-row {\\n  height: 24px;\\n  padding-left: 8px;\\n  font-size: small;\\n  text-align: start;\\n  vertical-align: middle;\\n  line-height: 24px;\\n  background-color: white;\\n}\\n\\n.igv-roi-menu-row-edit-description {\\n  width: -webkit-fill-available;\\n  font-size: small;\\n  text-align: start;\\n  vertical-align: middle;\\n  background-color: white;\\n  padding-left: 4px;\\n  padding-right: 4px;\\n  padding-bottom: 4px;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: stretch;\\n  align-items: stretch;\\n}\\n.igv-roi-menu-row-edit-description > label {\\n  margin-left: 2px;\\n  margin-bottom: 0;\\n  display: block;\\n  width: -webkit-fill-available;\\n}\\n.igv-roi-menu-row-edit-description > input {\\n  display: block;\\n  margin-left: 2px;\\n  margin-right: 2px;\\n  margin-bottom: 1px;\\n  width: -webkit-fill-available;\\n}\\n\\n.igv-container {\\n  position: relative;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-start;\\n  padding-top: 4px;\\n  user-select: none;\\n  -webkit-user-select: none;\\n  -ms-user-select: none;\\n}\\n\\n.igv-viewport {\\n  position: relative;\\n  margin-top: 5px;\\n  line-height: 1;\\n  overflow-x: hidden;\\n  overflow-y: hidden;\\n}\\n\\n.igv-viewport-content {\\n  position: relative;\\n  width: 100%;\\n}\\n.igv-viewport-content > canvas {\\n  position: relative;\\n  display: block;\\n}\\n\\n.igv-column-container {\\n  position: relative;\\n  display: flex;\\n  flex-direction: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: stretch;\\n  width: 100%;\\n}\\n\\n.igv-column-shim {\\n  width: 1px;\\n  margin-left: 2px;\\n  margin-right: 2px;\\n  background-color: #545453;\\n}\\n\\n.igv-column {\\n  position: relative;\\n  position: relative;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-start;\\n  box-sizing: border-box;\\n  height: 100%;\\n}\\n\\n.igv-axis-column {\\n  position: relative;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-start;\\n  box-sizing: border-box;\\n  height: 100%;\\n  width: 50px;\\n}\\n.igv-axis-column > div {\\n  margin-top: 5px;\\n  width: 100%;\\n}\\n\\n.igv-sample-name-column {\\n  position: relative;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-start;\\n  box-sizing: border-box;\\n  height: 100%;\\n}\\n\\n.igv-scrollbar-column {\\n  position: relative;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-start;\\n  box-sizing: border-box;\\n  height: 100%;\\n  width: 14px;\\n}\\n.igv-scrollbar-column > div {\\n  position: relative;\\n  margin-top: 5px;\\n  width: 14px;\\n}\\n.igv-scrollbar-column > div > div {\\n  cursor: pointer;\\n  position: absolute;\\n  top: 0;\\n  left: 2px;\\n  width: 8px;\\n  border-width: 1px;\\n  border-style: solid;\\n  border-color: #c4c4c4;\\n  border-top-left-radius: 4px;\\n  border-top-right-radius: 4px;\\n  border-bottom-left-radius: 4px;\\n  border-bottom-right-radius: 4px;\\n}\\n.igv-scrollbar-column > div > div:hover {\\n  background-color: #c4c4c4;\\n}\\n\\n.igv-track-drag-column {\\n  position: relative;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-start;\\n  box-sizing: border-box;\\n  height: 100%;\\n  width: 12px;\\n  background-color: white;\\n}\\n.igv-track-drag-column > .igv-track-drag-handle {\\n  z-index: 512;\\n  position: relative;\\n  cursor: pointer;\\n  margin-top: 5px;\\n  width: 100%;\\n  border-style: solid;\\n  border-width: 0;\\n  border-top-right-radius: 6px;\\n  border-bottom-right-radius: 6px;\\n  background-color: #c4c4c4;\\n}\\n.igv-track-drag-column .igv-track-drag-handle-hover {\\n  background-color: #787878;\\n}\\n.igv-track-drag-column > .igv-track-drag-shim {\\n  position: relative;\\n  margin-top: 5px;\\n  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\ No newline at end of file
diff --git a/igv_component/node_modules/igv/dist/igv.js b/igv_component/node_modules/igv/dist/igv.js
new file mode 100644
index 0000000000000000000000000000000000000000..c768586c69c3b5fc1ff1133e6a338630e4afcb3f
--- /dev/null
+++ b/igv_component/node_modules/igv/dist/igv.js
@@ -0,0 +1,63821 @@
+(function (global, factory) {
+    typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+    typeof define === 'function' && define.amd ? define(factory) :
+    (global = typeof globalThis !== 'undefined' ? globalThis : global || self, global.igv = factory());
+})(this, (function () { 'use strict';
+
+    /*!
+     * jQuery JavaScript Library v3.3.1 -ajax,-ajax/jsonp,-ajax/load,-ajax/parseXML,-ajax/script,-ajax/var/location,-ajax/var/nonce,-ajax/var/rquery,-ajax/xhr,-manipulation/_evalUrl,-event/ajax,-effects,-effects/Tween,-effects/animatedSelector
+     * https://jquery.com/
+     *
+     * Includes Sizzle.js
+     * https://sizzlejs.com/
+     *
+     * Copyright JS Foundation and other contributors
+     * Released under the MIT license
+     * https://jquery.org/license
+     *
+     * Date: 2018-01-20T17:24Z
+     */
+
+    var arr = [];
+
+    var document$1 = window.document;
+
+    var getProto = Object.getPrototypeOf;
+
+    var slice = arr.slice;
+
+    var concat = arr.concat;
+
+    var push = arr.push;
+
+    var indexOf = arr.indexOf;
+
+    var class2type = {};
+
+    var toString$3 = class2type.toString;
+
+    var hasOwn = class2type.hasOwnProperty;
+
+    var fnToString = hasOwn.toString;
+
+    var ObjectFunctionString = fnToString.call(Object);
+
+    var support = {};
+
+    var isFunction = function isFunction(obj) {
+
+        // Support: Chrome <=57, Firefox <=52
+        // In some browsers, typeof returns "function" for HTML <object> elements
+        // (i.e., `typeof document.createElement( "object" ) === "function"`).
+        // We don't want to classify *any* DOM node as a function.
+        return typeof obj === "function" && typeof obj.nodeType !== "number";
+    };
+
+
+    var isWindow = function isWindow(obj) {
+        return obj != null && obj === obj.window;
+    };
+
+
+    var preservedScriptAttributes = {
+        type: true,
+        src: true,
+        noModule: true
+    };
+
+    function DOMEval(code, doc, node) {
+        doc = doc || document$1;
+
+        var i,
+            script = doc.createElement("script");
+
+        script.text = code;
+        if (node) {
+            for (i in preservedScriptAttributes) {
+                if (node[i]) {
+                    script[i] = node[i];
+                }
+            }
+        }
+        doc.head.appendChild(script).parentNode.removeChild(script);
+    }
+
+
+    function toType(obj) {
+        if (obj == null) {
+            return obj + "";
+        }
+
+        // Support: Android <=2.3 only (functionish RegExp)
+        return typeof obj === "object" || typeof obj === "function" ?
+            class2type[toString$3.call(obj)] || "object" :
+            typeof obj;
+    }
+
+    // global Symbol
+    // Defining this global in .eslintrc.json would create a danger of using the global
+    // unguarded in another place, it seems safer to define global only for this module
+
+
+    var
+        version$1 = "3.3.1 -ajax,-ajax/jsonp,-ajax/load,-ajax/parseXML,-ajax/script,-ajax/var/location,-ajax/var/nonce,-ajax/var/rquery,-ajax/xhr,-manipulation/_evalUrl,-event/ajax,-effects,-effects/Tween,-effects/animatedSelector",
+
+        // Define a local copy of jQuery
+        jQuery = function (selector, context) {
+
+            // The jQuery object is actually just the init constructor 'enhanced'
+            // Need init if jQuery is called (just allow error to be thrown if not included)
+            return new jQuery.fn.init(selector, context);
+        },
+
+        // Support: Android <=4.0 only
+        // Make sure we trim BOM and NBSP
+        rtrim = /^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g;
+
+    jQuery.fn = jQuery.prototype = {
+
+        // The current version of jQuery being used
+        jquery: version$1,
+
+        constructor: jQuery,
+
+        // The default length of a jQuery object is 0
+        length: 0,
+
+        toArray: function () {
+            return slice.call(this);
+        },
+
+        // Get the Nth element in the matched element set OR
+        // Get the whole matched element set as a clean array
+        get: function (num) {
+
+            // Return all the elements in a clean array
+            if (num == null) {
+                return slice.call(this);
+            }
+
+            // Return just the one element from the set
+            return num < 0 ? this[num + this.length] : this[num];
+        },
+
+        // Take an array of elements and push it onto the stack
+        // (returning the new matched element set)
+        pushStack: function (elems) {
+
+            // Build a new jQuery matched element set
+            var ret = jQuery.merge(this.constructor(), elems);
+
+            // Add the old object onto the stack (as a reference)
+            ret.prevObject = this;
+
+            // Return the newly-formed element set
+            return ret;
+        },
+
+        // Execute a callback for every element in the matched set.
+        each: function (callback) {
+            return jQuery.each(this, callback);
+        },
+
+        map: function (callback) {
+            return this.pushStack(jQuery.map(this, function (elem, i) {
+                return callback.call(elem, i, elem);
+            }));
+        },
+
+        slice: function () {
+            return this.pushStack(slice.apply(this, arguments));
+        },
+
+        first: function () {
+            return this.eq(0);
+        },
+
+        last: function () {
+            return this.eq(-1);
+        },
+
+        eq: function (i) {
+            var len = this.length,
+                j = +i + (i < 0 ? len : 0);
+            return this.pushStack(j >= 0 && j < len ? [this[j]] : []);
+        },
+
+        end: function () {
+            return this.prevObject || this.constructor();
+        },
+
+        // For internal use only.
+        // Behaves like an Array's method, not like a jQuery method.
+        push: push,
+        sort: arr.sort,
+        splice: arr.splice
+    };
+
+    jQuery.extend = jQuery.fn.extend = function () {
+        var options, name, src, copy, copyIsArray, clone,
+            target = arguments[0] || {},
+            i = 1,
+            length = arguments.length,
+            deep = false;
+
+        // Handle a deep copy situation
+        if (typeof target === "boolean") {
+            deep = target;
+
+            // Skip the boolean and the target
+            target = arguments[i] || {};
+            i++;
+        }
+
+        // Handle case when target is a string or something (possible in deep copy)
+        if (typeof target !== "object" && !isFunction(target)) {
+            target = {};
+        }
+
+        // Extend jQuery itself if only one argument is passed
+        if (i === length) {
+            target = this;
+            i--;
+        }
+
+        for (; i < length; i++) {
+
+            // Only deal with non-null/undefined values
+            if ((options = arguments[i]) != null) {
+
+                // Extend the base object
+                for (name in options) {
+                    src = target[name];
+                    copy = options[name];
+
+                    // Prevent never-ending loop
+                    if (target === copy) {
+                        continue;
+                    }
+
+                    // Recurse if we're merging plain objects or arrays
+                    if (deep && copy && (jQuery.isPlainObject(copy) ||
+                        (copyIsArray = Array.isArray(copy)))) {
+
+                        if (copyIsArray) {
+                            copyIsArray = false;
+                            clone = src && Array.isArray(src) ? src : [];
+
+                        } else {
+                            clone = src && jQuery.isPlainObject(src) ? src : {};
+                        }
+
+                        // Never move original objects, clone them
+                        target[name] = jQuery.extend(deep, clone, copy);
+
+                        // Don't bring in undefined values
+                    } else if (copy !== undefined) {
+                        target[name] = copy;
+                    }
+                }
+            }
+        }
+
+        // Return the modified object
+        return target;
+    };
+
+    jQuery.extend({
+
+        // Unique for each copy of jQuery on the page
+        expando: "jQuery" + (version$1 + Math.random()).replace(/\D/g, ""),
+
+        // Assume jQuery is ready without the ready module
+        isReady: true,
+
+        error: function (msg) {
+            throw new Error(msg);
+        },
+
+        noop: function () {
+        },
+
+        isPlainObject: function (obj) {
+            var proto, Ctor;
+
+            // Detect obvious negatives
+            // Use toString instead of jQuery.type to catch host objects
+            if (!obj || toString$3.call(obj) !== "[object Object]") {
+                return false;
+            }
+
+            proto = getProto(obj);
+
+            // Objects with no prototype (e.g., `Object.create( null )`) are plain
+            if (!proto) {
+                return true;
+            }
+
+            // Objects with prototype are plain iff they were constructed by a global Object function
+            Ctor = hasOwn.call(proto, "constructor") && proto.constructor;
+            return typeof Ctor === "function" && fnToString.call(Ctor) === ObjectFunctionString;
+        },
+
+        isEmptyObject: function (obj) {
+
+            /* eslint-disable no-unused-vars */
+            // See https://github.com/eslint/eslint/issues/6125
+            var name;
+
+            for (name in obj) {
+                return false;
+            }
+            return true;
+        },
+
+        // Evaluates a script in a global context
+        globalEval: function (code) {
+            DOMEval(code);
+        },
+
+        each: function (obj, callback) {
+            var length, i = 0;
+
+            if (isArrayLike(obj)) {
+                length = obj.length;
+                for (; i < length; i++) {
+                    if (callback.call(obj[i], i, obj[i]) === false) {
+                        break;
+                    }
+                }
+            } else {
+                for (i in obj) {
+                    if (callback.call(obj[i], i, obj[i]) === false) {
+                        break;
+                    }
+                }
+            }
+
+            return obj;
+        },
+
+        // Support: Android <=4.0 only
+        trim: function (text) {
+            return text == null ?
+                "" :
+                (text + "").replace(rtrim, "");
+        },
+
+        // results is for internal usage only
+        makeArray: function (arr, results) {
+            var ret = results || [];
+
+            if (arr != null) {
+                if (isArrayLike(Object(arr))) {
+                    jQuery.merge(ret,
+                        typeof arr === "string" ?
+                            [arr] : arr
+                    );
+                } else {
+                    push.call(ret, arr);
+                }
+            }
+
+            return ret;
+        },
+
+        inArray: function (elem, arr, i) {
+            return arr == null ? -1 : indexOf.call(arr, elem, i);
+        },
+
+        // Support: Android <=4.0 only, PhantomJS 1 only
+        // push.apply(_, arraylike) throws on ancient WebKit
+        merge: function (first, second) {
+            var len = +second.length,
+                j = 0,
+                i = first.length;
+
+            for (; j < len; j++) {
+                first[i++] = second[j];
+            }
+
+            first.length = i;
+
+            return first;
+        },
+
+        grep: function (elems, callback, invert) {
+            var callbackInverse,
+                matches = [],
+                i = 0,
+                length = elems.length,
+                callbackExpect = !invert;
+
+            // Go through the array, only saving the items
+            // that pass the validator function
+            for (; i < length; i++) {
+                callbackInverse = !callback(elems[i], i);
+                if (callbackInverse !== callbackExpect) {
+                    matches.push(elems[i]);
+                }
+            }
+
+            return matches;
+        },
+
+        // arg is for internal usage only
+        map: function (elems, callback, arg) {
+            var length, value,
+                i = 0,
+                ret = [];
+
+            // Go through the array, translating each of the items to their new values
+            if (isArrayLike(elems)) {
+                length = elems.length;
+                for (; i < length; i++) {
+                    value = callback(elems[i], i, arg);
+
+                    if (value != null) {
+                        ret.push(value);
+                    }
+                }
+
+                // Go through every key on the object,
+            } else {
+                for (i in elems) {
+                    value = callback(elems[i], i, arg);
+
+                    if (value != null) {
+                        ret.push(value);
+                    }
+                }
+            }
+
+            // Flatten any nested arrays
+            return concat.apply([], ret);
+        },
+
+        // A global GUID counter for objects
+        guid: 1,
+
+        // jQuery.support is not used in Core but other projects attach their
+        // properties to it so it needs to exist.
+        support: support
+    });
+
+    if (typeof Symbol === "function") {
+        jQuery.fn[Symbol.iterator] = arr[Symbol.iterator];
+    }
+
+    // Populate the class2type map
+    jQuery.each("Boolean Number String Function Array Date RegExp Object Error Symbol".split(" "),
+        function (i, name) {
+            class2type["[object " + name + "]"] = name.toLowerCase();
+        });
+
+    function isArrayLike(obj) {
+
+        // Support: real iOS 8.2 only (not reproducible in simulator)
+        // `in` check used to prevent JIT error (gh-2145)
+        // hasOwn isn't used here due to false negatives
+        // regarding Nodelist length in IE
+        var length = !!obj && "length" in obj && obj.length,
+            type = toType(obj);
+
+        if (isFunction(obj) || isWindow(obj)) {
+            return false;
+        }
+
+        return type === "array" || length === 0 ||
+            typeof length === "number" && length > 0 && (length - 1) in obj;
+    }
+
+    var Sizzle =
+        /*!
+     * Sizzle CSS Selector Engine v2.3.3
+     * https://sizzlejs.com/
+     *
+     * Copyright jQuery Foundation and other contributors
+     * Released under the MIT license
+     * http://jquery.org/license
+     *
+     * Date: 2016-08-08
+     */
+        (function (window) {
+
+            var i,
+                support,
+                Expr,
+                getText,
+                isXML,
+                tokenize,
+                compile,
+                select,
+                outermostContext,
+                sortInput,
+                hasDuplicate,
+
+                // Local document vars
+                setDocument,
+                document,
+                docElem,
+                documentIsHTML,
+                rbuggyQSA,
+                rbuggyMatches,
+                matches,
+                contains,
+
+                // Instance-specific data
+                expando = "sizzle" + 1 * new Date(),
+                preferredDoc = window.document,
+                dirruns = 0,
+                done = 0,
+                classCache = createCache(),
+                tokenCache = createCache(),
+                compilerCache = createCache(),
+                sortOrder = function (a, b) {
+                    if (a === b) {
+                        hasDuplicate = true;
+                    }
+                    return 0;
+                },
+
+                // Instance methods
+                hasOwn = ({}).hasOwnProperty,
+                arr = [],
+                pop = arr.pop,
+                push_native = arr.push,
+                push = arr.push,
+                slice = arr.slice,
+                // Use a stripped-down indexOf as it's faster than native
+                // https://jsperf.com/thor-indexof-vs-for/5
+                indexOf = function (list, elem) {
+                    var i = 0,
+                        len = list.length;
+                    for (; i < len; i++) {
+                        if (list[i] === elem) {
+                            return i;
+                        }
+                    }
+                    return -1;
+                },
+
+                booleans = "checked|selected|async|autofocus|autoplay|controls|defer|disabled|hidden|ismap|loop|multiple|open|readonly|required|scoped",
+
+                // Regular expressions
+
+                // http://www.w3.org/TR/css3-selectors/#whitespace
+                whitespace = "[\\x20\\t\\r\\n\\f]",
+
+                // http://www.w3.org/TR/CSS21/syndata.html#value-def-identifier
+                identifier = "(?:\\\\.|[\\w-]|[^\0-\\xa0])+",
+
+                // Attribute selectors: http://www.w3.org/TR/selectors/#attribute-selectors
+                attributes = "\\[" + whitespace + "*(" + identifier + ")(?:" + whitespace +
+                    // Operator (capture 2)
+                    "*([*^$|!~]?=)" + whitespace +
+                    // "Attribute values must be CSS identifiers [capture 5] or strings [capture 3 or capture 4]"
+                    "*(?:'((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\"|(" + identifier + "))|)" + whitespace +
+                    "*\\]",
+
+                pseudos = ":(" + identifier + ")(?:\\((" +
+                    // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:
+                    // 1. quoted (capture 3; capture 4 or capture 5)
+                    "('((?:\\\\.|[^\\\\'])*)'|\"((?:\\\\.|[^\\\\\"])*)\")|" +
+                    // 2. simple (capture 6)
+                    "((?:\\\\.|[^\\\\()[\\]]|" + attributes + ")*)|" +
+                    // 3. anything else (capture 2)
+                    ".*" +
+                    ")\\)|)",
+
+                // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter
+                rwhitespace = new RegExp(whitespace + "+", "g"),
+                rtrim = new RegExp("^" + whitespace + "+|((?:^|[^\\\\])(?:\\\\.)*)" + whitespace + "+$", "g"),
+
+                rcomma = new RegExp("^" + whitespace + "*," + whitespace + "*"),
+                rcombinators = new RegExp("^" + whitespace + "*([>+~]|" + whitespace + ")" + whitespace + "*"),
+
+                rattributeQuotes = new RegExp("=" + whitespace + "*([^\\]'\"]*?)" + whitespace + "*\\]", "g"),
+
+                rpseudo = new RegExp(pseudos),
+                ridentifier = new RegExp("^" + identifier + "$"),
+
+                matchExpr = {
+                    "ID": new RegExp("^#(" + identifier + ")"),
+                    "CLASS": new RegExp("^\\.(" + identifier + ")"),
+                    "TAG": new RegExp("^(" + identifier + "|[*])"),
+                    "ATTR": new RegExp("^" + attributes),
+                    "PSEUDO": new RegExp("^" + pseudos),
+                    "CHILD": new RegExp("^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\(" + whitespace +
+                        "*(even|odd|(([+-]|)(\\d*)n|)" + whitespace + "*(?:([+-]|)" + whitespace +
+                        "*(\\d+)|))" + whitespace + "*\\)|)", "i"),
+                    "bool": new RegExp("^(?:" + booleans + ")$", "i"),
+                    // For use in libraries implementing .is()
+                    // We use this for POS matching in `select`
+                    "needsContext": new RegExp("^" + whitespace + "*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\(" +
+                        whitespace + "*((?:-\\d)?\\d*)" + whitespace + "*\\)|)(?=[^-]|$)", "i")
+                },
+
+                rinputs = /^(?:input|select|textarea|button)$/i,
+                rheader = /^h\d$/i,
+
+                rnative = /^[^{]+\{\s*\[native \w/,
+
+                // Easily-parseable/retrievable ID or TAG or CLASS selectors
+                rquickExpr = /^(?:#([\w-]+)|(\w+)|\.([\w-]+))$/,
+
+                rsibling = /[+~]/,
+
+                // CSS escapes
+                // http://www.w3.org/TR/CSS21/syndata.html#escaped-characters
+                runescape = new RegExp("\\\\([\\da-f]{1,6}" + whitespace + "?|(" + whitespace + ")|.)", "ig"),
+                funescape = function (_, escaped, escapedWhitespace) {
+                    var high = "0x" + escaped - 0x10000;
+                    // NaN means non-codepoint
+                    // Support: Firefox<24
+                    // Workaround erroneous numeric interpretation of +"0x"
+                    return high !== high || escapedWhitespace ?
+                        escaped :
+                        high < 0 ?
+                            // BMP codepoint
+                            String.fromCharCode(high + 0x10000) :
+                            // Supplemental Plane codepoint (surrogate pair)
+                            String.fromCharCode(high >> 10 | 0xD800, high & 0x3FF | 0xDC00);
+                },
+
+                // CSS string/identifier serialization
+                // https://drafts.csswg.org/cssom/#common-serializing-idioms
+                // eslint-disable-next-line no-control-regex
+                rcssescape = /([\0-\x1f\x7f]|^-?\d)|^-$|[^\0-\x1f\x7f-\uFFFF\w-]/g,
+                fcssescape = function (ch, asCodePoint) {
+                    if (asCodePoint) {
+
+                        // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER
+                        if (ch === "\0") {
+                            return "\uFFFD";
+                        }
+
+                        // Control characters and (dependent upon position) numbers get escaped as code points
+                        return ch.slice(0, -1) + "\\" + ch.charCodeAt(ch.length - 1).toString(16) + " ";
+                    }
+
+                    // Other potentially-special ASCII characters get backslash-escaped
+                    return "\\" + ch;
+                },
+
+                // Used for iframes
+                // See setDocument()
+                // Removing the function wrapper causes a "Permission Denied"
+                // error in IE
+                unloadHandler = function () {
+                    setDocument();
+                },
+
+                disabledAncestor = addCombinator(
+                    function (elem) {
+                        return elem.disabled === true && ("form" in elem || "label" in elem);
+                    },
+                    {dir: "parentNode", next: "legend"}
+                );
+
+    // Optimize for push.apply( _, NodeList )
+            try {
+                push.apply(
+                    (arr = slice.call(preferredDoc.childNodes)),
+                    preferredDoc.childNodes
+                );
+                // Support: Android<4.0
+                // Detect silently failing push.apply
+                arr[preferredDoc.childNodes.length].nodeType;
+            } catch (e) {
+                push = {
+                    apply: arr.length ?
+
+                        // Leverage slice if possible
+                        function (target, els) {
+                            push_native.apply(target, slice.call(els));
+                        } :
+
+                        // Support: IE<9
+                        // Otherwise append directly
+                        function (target, els) {
+                            var j = target.length,
+                                i = 0;
+                            // Can't trust NodeList.length
+                            while ((target[j++] = els[i++])) {
+                            }
+                            target.length = j - 1;
+                        }
+                };
+            }
+
+            function Sizzle(selector, context, results, seed) {
+                var m, i, elem, nid, match, groups, newSelector,
+                    newContext = context && context.ownerDocument,
+
+                    // nodeType defaults to 9, since context defaults to document
+                    nodeType = context ? context.nodeType : 9;
+
+                results = results || [];
+
+                // Return early from calls with invalid selector or context
+                if (typeof selector !== "string" || !selector ||
+                    nodeType !== 1 && nodeType !== 9 && nodeType !== 11) {
+
+                    return results;
+                }
+
+                // Try to shortcut find operations (as opposed to filters) in HTML documents
+                if (!seed) {
+
+                    if ((context ? context.ownerDocument || context : preferredDoc) !== document) {
+                        setDocument(context);
+                    }
+                    context = context || document;
+
+                    if (documentIsHTML) {
+
+                        // If the selector is sufficiently simple, try using a "get*By*" DOM method
+                        // (excepting DocumentFragment context, where the methods don't exist)
+                        if (nodeType !== 11 && (match = rquickExpr.exec(selector))) {
+
+                            // ID selector
+                            if ((m = match[1])) {
+
+                                // Document context
+                                if (nodeType === 9) {
+                                    if ((elem = context.getElementById(m))) {
+
+                                        // Support: IE, Opera, Webkit
+                                        // TODO: identify versions
+                                        // getElementById can match elements by name instead of ID
+                                        if (elem.id === m) {
+                                            results.push(elem);
+                                            return results;
+                                        }
+                                    } else {
+                                        return results;
+                                    }
+
+                                    // Element context
+                                } else {
+
+                                    // Support: IE, Opera, Webkit
+                                    // TODO: identify versions
+                                    // getElementById can match elements by name instead of ID
+                                    if (newContext && (elem = newContext.getElementById(m)) &&
+                                        contains(context, elem) &&
+                                        elem.id === m) {
+
+                                        results.push(elem);
+                                        return results;
+                                    }
+                                }
+
+                                // Type selector
+                            } else if (match[2]) {
+                                push.apply(results, context.getElementsByTagName(selector));
+                                return results;
+
+                                // Class selector
+                            } else if ((m = match[3]) && support.getElementsByClassName &&
+                                context.getElementsByClassName) {
+
+                                push.apply(results, context.getElementsByClassName(m));
+                                return results;
+                            }
+                        }
+
+                        // Take advantage of querySelectorAll
+                        if (support.qsa &&
+                            !compilerCache[selector + " "] &&
+                            (!rbuggyQSA || !rbuggyQSA.test(selector))) {
+
+                            if (nodeType !== 1) {
+                                newContext = context;
+                                newSelector = selector;
+
+                                // qSA looks outside Element context, which is not what we want
+                                // Thanks to Andrew Dupont for this workaround technique
+                                // Support: IE <=8
+                                // Exclude object elements
+                            } else if (context.nodeName.toLowerCase() !== "object") {
+
+                                // Capture the context ID, setting it first if necessary
+                                if ((nid = context.getAttribute("id"))) {
+                                    nid = nid.replace(rcssescape, fcssescape);
+                                } else {
+                                    context.setAttribute("id", (nid = expando));
+                                }
+
+                                // Prefix every selector in the list
+                                groups = tokenize(selector);
+                                i = groups.length;
+                                while (i--) {
+                                    groups[i] = "#" + nid + " " + toSelector(groups[i]);
+                                }
+                                newSelector = groups.join(",");
+
+                                // Expand context for sibling selectors
+                                newContext = rsibling.test(selector) && testContext(context.parentNode) ||
+                                    context;
+                            }
+
+                            if (newSelector) {
+                                try {
+                                    push.apply(results,
+                                        newContext.querySelectorAll(newSelector)
+                                    );
+                                    return results;
+                                } catch (qsaError) {
+                                } finally {
+                                    if (nid === expando) {
+                                        context.removeAttribute("id");
+                                    }
+                                }
+                            }
+                        }
+                    }
+                }
+
+                // All others
+                return select(selector.replace(rtrim, "$1"), context, results, seed);
+            }
+
+            /**
+             * Create key-value caches of limited size
+             * @returns {function(string, object)} Returns the Object data after storing it on itself with
+             *    property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)
+             *    deleting the oldest entry
+             */
+            function createCache() {
+                var keys = [];
+
+                function cache(key, value) {
+                    // Use (key + " ") to avoid collision with native prototype properties (see Issue #157)
+                    if (keys.push(key + " ") > Expr.cacheLength) {
+                        // Only keep the most recent entries
+                        delete cache[keys.shift()];
+                    }
+                    return (cache[key + " "] = value);
+                }
+
+                return cache;
+            }
+
+            /**
+             * Mark a function for special use by Sizzle
+             * @param {Function} fn The function to mark
+             */
+            function markFunction(fn) {
+                fn[expando] = true;
+                return fn;
+            }
+
+            /**
+             * Support testing using an element
+             * @param {Function} fn Passed the created element and returns a boolean result
+             */
+            function assert(fn) {
+                var el = document.createElement("fieldset");
+
+                try {
+                    return !!fn(el);
+                } catch (e) {
+                    return false;
+                } finally {
+                    // Remove from its parent by default
+                    if (el.parentNode) {
+                        el.parentNode.removeChild(el);
+                    }
+                    // release memory in IE
+                    el = null;
+                }
+            }
+
+            /**
+             * Checks document order of two siblings
+             * @param {Element} a
+             * @param {Element} b
+             * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b
+             */
+            function siblingCheck(a, b) {
+                var cur = b && a,
+                    diff = cur && a.nodeType === 1 && b.nodeType === 1 &&
+                        a.sourceIndex - b.sourceIndex;
+
+                // Use IE sourceIndex if available on both nodes
+                if (diff) {
+                    return diff;
+                }
+
+                // Check if b follows a
+                if (cur) {
+                    while ((cur = cur.nextSibling)) {
+                        if (cur === b) {
+                            return -1;
+                        }
+                    }
+                }
+
+                return a ? 1 : -1;
+            }
+
+            /**
+             * Returns a function to use in pseudos for input types
+             * @param {String} type
+             */
+            function createInputPseudo(type) {
+                return function (elem) {
+                    var name = elem.nodeName.toLowerCase();
+                    return name === "input" && elem.type === type;
+                };
+            }
+
+            /**
+             * Returns a function to use in pseudos for buttons
+             * @param {String} type
+             */
+            function createButtonPseudo(type) {
+                return function (elem) {
+                    var name = elem.nodeName.toLowerCase();
+                    return (name === "input" || name === "button") && elem.type === type;
+                };
+            }
+
+            /**
+             * Returns a function to use in pseudos for :enabled/:disabled
+             * @param {Boolean} disabled true for :disabled; false for :enabled
+             */
+            function createDisabledPseudo(disabled) {
+
+                // Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable
+                return function (elem) {
+
+                    // Only certain elements can match :enabled or :disabled
+                    // https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled
+                    // https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled
+                    if ("form" in elem) {
+
+                        // Check for inherited disabledness on relevant non-disabled elements:
+                        // * listed form-associated elements in a disabled fieldset
+                        //   https://html.spec.whatwg.org/multipage/forms.html#category-listed
+                        //   https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled
+                        // * option elements in a disabled optgroup
+                        //   https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled
+                        // All such elements have a "form" property.
+                        if (elem.parentNode && elem.disabled === false) {
+
+                            // Option elements defer to a parent optgroup if present
+                            if ("label" in elem) {
+                                if ("label" in elem.parentNode) {
+                                    return elem.parentNode.disabled === disabled;
+                                } else {
+                                    return elem.disabled === disabled;
+                                }
+                            }
+
+                            // Support: IE 6 - 11
+                            // Use the isDisabled shortcut property to check for disabled fieldset ancestors
+                            return elem.isDisabled === disabled ||
+
+                                // Where there is no isDisabled, check manually
+                                /* jshint -W018 */
+                                elem.isDisabled !== !disabled &&
+                                disabledAncestor(elem) === disabled;
+                        }
+
+                        return elem.disabled === disabled;
+
+                        // Try to winnow out elements that can't be disabled before trusting the disabled property.
+                        // Some victims get caught in our net (label, legend, menu, track), but it shouldn't
+                        // even exist on them, let alone have a boolean value.
+                    } else if ("label" in elem) {
+                        return elem.disabled === disabled;
+                    }
+
+                    // Remaining elements are neither :enabled nor :disabled
+                    return false;
+                };
+            }
+
+            /**
+             * Returns a function to use in pseudos for positionals
+             * @param {Function} fn
+             */
+            function createPositionalPseudo(fn) {
+                return markFunction(function (argument) {
+                    argument = +argument;
+                    return markFunction(function (seed, matches) {
+                        var j,
+                            matchIndexes = fn([], seed.length, argument),
+                            i = matchIndexes.length;
+
+                        // Match elements found at the specified indexes
+                        while (i--) {
+                            if (seed[(j = matchIndexes[i])]) {
+                                seed[j] = !(matches[j] = seed[j]);
+                            }
+                        }
+                    });
+                });
+            }
+
+            /**
+             * Checks a node for validity as a Sizzle context
+             * @param {Element|Object=} context
+             * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value
+             */
+            function testContext(context) {
+                return context && typeof context.getElementsByTagName !== "undefined" && context;
+            }
+
+    // Expose support vars for convenience
+            support = Sizzle.support = {};
+
+            /**
+             * Detects XML nodes
+             * @param {Element|Object} elem An element or a document
+             * @returns {Boolean} True iff elem is a non-HTML XML node
+             */
+            isXML = Sizzle.isXML = function (elem) {
+                // documentElement is verified for cases where it doesn't yet exist
+                // (such as loading iframes in IE - #4833)
+                var documentElement = elem && (elem.ownerDocument || elem).documentElement;
+                return documentElement ? documentElement.nodeName !== "HTML" : false;
+            };
+
+            /**
+             * Sets document-related variables once based on the current document
+             * @param {Element|Object} [doc] An element or document object to use to set the document
+             * @returns {Object} Returns the current document
+             */
+            setDocument = Sizzle.setDocument = function (node) {
+                var hasCompare, subWindow,
+                    doc = node ? node.ownerDocument || node : preferredDoc;
+
+                // Return early if doc is invalid or already selected
+                if (doc === document || doc.nodeType !== 9 || !doc.documentElement) {
+                    return document;
+                }
+
+                // Update global variables
+                document = doc;
+                docElem = document.documentElement;
+                documentIsHTML = !isXML(document);
+
+                // Support: IE 9-11, Edge
+                // Accessing iframe documents after unload throws "permission denied" errors (jQuery #13936)
+                if (preferredDoc !== document &&
+                    (subWindow = document.defaultView) && subWindow.top !== subWindow) {
+
+                    // Support: IE 11, Edge
+                    if (subWindow.addEventListener) {
+                        subWindow.addEventListener("unload", unloadHandler, false);
+
+                        // Support: IE 9 - 10 only
+                    } else if (subWindow.attachEvent) {
+                        subWindow.attachEvent("onunload", unloadHandler);
+                    }
+                }
+
+                /* Attributes
+    	---------------------------------------------------------------------- */
+
+                // Support: IE<8
+                // Verify that getAttribute really returns attributes and not properties
+                // (excepting IE8 booleans)
+                support.attributes = assert(function (el) {
+                    el.className = "i";
+                    return !el.getAttribute("className");
+                });
+
+                /* getElement(s)By*
+    	---------------------------------------------------------------------- */
+
+                // Check if getElementsByTagName("*") returns only elements
+                support.getElementsByTagName = assert(function (el) {
+                    el.appendChild(document.createComment(""));
+                    return !el.getElementsByTagName("*").length;
+                });
+
+                // Support: IE<9
+                support.getElementsByClassName = rnative.test(document.getElementsByClassName);
+
+                // Support: IE<10
+                // Check if getElementById returns elements by name
+                // The broken getElementById methods don't pick up programmatically-set names,
+                // so use a roundabout getElementsByName test
+                support.getById = assert(function (el) {
+                    docElem.appendChild(el).id = expando;
+                    return !document.getElementsByName || !document.getElementsByName(expando).length;
+                });
+
+                // ID filter and find
+                if (support.getById) {
+                    Expr.filter["ID"] = function (id) {
+                        var attrId = id.replace(runescape, funescape);
+                        return function (elem) {
+                            return elem.getAttribute("id") === attrId;
+                        };
+                    };
+                    Expr.find["ID"] = function (id, context) {
+                        if (typeof context.getElementById !== "undefined" && documentIsHTML) {
+                            var elem = context.getElementById(id);
+                            return elem ? [elem] : [];
+                        }
+                    };
+                } else {
+                    Expr.filter["ID"] = function (id) {
+                        var attrId = id.replace(runescape, funescape);
+                        return function (elem) {
+                            var node = typeof elem.getAttributeNode !== "undefined" &&
+                                elem.getAttributeNode("id");
+                            return node && node.value === attrId;
+                        };
+                    };
+
+                    // Support: IE 6 - 7 only
+                    // getElementById is not reliable as a find shortcut
+                    Expr.find["ID"] = function (id, context) {
+                        if (typeof context.getElementById !== "undefined" && documentIsHTML) {
+                            var node, i, elems,
+                                elem = context.getElementById(id);
+
+                            if (elem) {
+
+                                // Verify the id attribute
+                                node = elem.getAttributeNode("id");
+                                if (node && node.value === id) {
+                                    return [elem];
+                                }
+
+                                // Fall back on getElementsByName
+                                elems = context.getElementsByName(id);
+                                i = 0;
+                                while ((elem = elems[i++])) {
+                                    node = elem.getAttributeNode("id");
+                                    if (node && node.value === id) {
+                                        return [elem];
+                                    }
+                                }
+                            }
+
+                            return [];
+                        }
+                    };
+                }
+
+                // Tag
+                Expr.find["TAG"] = support.getElementsByTagName ?
+                    function (tag, context) {
+                        if (typeof context.getElementsByTagName !== "undefined") {
+                            return context.getElementsByTagName(tag);
+
+                            // DocumentFragment nodes don't have gEBTN
+                        } else if (support.qsa) {
+                            return context.querySelectorAll(tag);
+                        }
+                    } :
+
+                    function (tag, context) {
+                        var elem,
+                            tmp = [],
+                            i = 0,
+                            // By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too
+                            results = context.getElementsByTagName(tag);
+
+                        // Filter out possible comments
+                        if (tag === "*") {
+                            while ((elem = results[i++])) {
+                                if (elem.nodeType === 1) {
+                                    tmp.push(elem);
+                                }
+                            }
+
+                            return tmp;
+                        }
+                        return results;
+                    };
+
+                // Class
+                Expr.find["CLASS"] = support.getElementsByClassName && function (className, context) {
+                    if (typeof context.getElementsByClassName !== "undefined" && documentIsHTML) {
+                        return context.getElementsByClassName(className);
+                    }
+                };
+
+                /* QSA/matchesSelector
+    	---------------------------------------------------------------------- */
+
+                // QSA and matchesSelector support
+
+                // matchesSelector(:active) reports false when true (IE9/Opera 11.5)
+                rbuggyMatches = [];
+
+                // qSa(:focus) reports false when true (Chrome 21)
+                // We allow this because of a bug in IE8/9 that throws an error
+                // whenever `document.activeElement` is accessed on an iframe
+                // So, we allow :focus to pass through QSA all the time to avoid the IE error
+                // See https://bugs.jquery.com/ticket/13378
+                rbuggyQSA = [];
+
+                if ((support.qsa = rnative.test(document.querySelectorAll))) {
+                    // Build QSA regex
+                    // Regex strategy adopted from Diego Perini
+                    assert(function (el) {
+                        // Select is set to empty string on purpose
+                        // This is to test IE's treatment of not explicitly
+                        // setting a boolean content attribute,
+                        // since its presence should be enough
+                        // https://bugs.jquery.com/ticket/12359
+                        docElem.appendChild(el).innerHTML = "<a id='" + expando + "'></a>" +
+                            "<select id='" + expando + "-\r\\' msallowcapture=''>" +
+                            "<option selected=''></option></select>";
+
+                        // Support: IE8, Opera 11-12.16
+                        // Nothing should be selected when empty strings follow ^= or $= or *=
+                        // The test attribute must be unknown in Opera but "safe" for WinRT
+                        // https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section
+                        if (el.querySelectorAll("[msallowcapture^='']").length) {
+                            rbuggyQSA.push("[*^$]=" + whitespace + "*(?:''|\"\")");
+                        }
+
+                        // Support: IE8
+                        // Boolean attributes and "value" are not treated correctly
+                        if (!el.querySelectorAll("[selected]").length) {
+                            rbuggyQSA.push("\\[" + whitespace + "*(?:value|" + booleans + ")");
+                        }
+
+                        // Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+
+                        if (!el.querySelectorAll("[id~=" + expando + "-]").length) {
+                            rbuggyQSA.push("~=");
+                        }
+
+                        // Webkit/Opera - :checked should return selected option elements
+                        // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
+                        // IE8 throws error here and will not see later tests
+                        if (!el.querySelectorAll(":checked").length) {
+                            rbuggyQSA.push(":checked");
+                        }
+
+                        // Support: Safari 8+, iOS 8+
+                        // https://bugs.webkit.org/show_bug.cgi?id=136851
+                        // In-page `selector#id sibling-combinator selector` fails
+                        if (!el.querySelectorAll("a#" + expando + "+*").length) {
+                            rbuggyQSA.push(".#.+[+~]");
+                        }
+                    });
+
+                    assert(function (el) {
+                        el.innerHTML = "<a href='' disabled='disabled'></a>" +
+                            "<select disabled='disabled'><option/></select>";
+
+                        // Support: Windows 8 Native Apps
+                        // The type and name attributes are restricted during .innerHTML assignment
+                        var input = document.createElement("input");
+                        input.setAttribute("type", "hidden");
+                        el.appendChild(input).setAttribute("name", "D");
+
+                        // Support: IE8
+                        // Enforce case-sensitivity of name attribute
+                        if (el.querySelectorAll("[name=d]").length) {
+                            rbuggyQSA.push("name" + whitespace + "*[*^$|!~]?=");
+                        }
+
+                        // FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)
+                        // IE8 throws error here and will not see later tests
+                        if (el.querySelectorAll(":enabled").length !== 2) {
+                            rbuggyQSA.push(":enabled", ":disabled");
+                        }
+
+                        // Support: IE9-11+
+                        // IE's :disabled selector does not pick up the children of disabled fieldsets
+                        docElem.appendChild(el).disabled = true;
+                        if (el.querySelectorAll(":disabled").length !== 2) {
+                            rbuggyQSA.push(":enabled", ":disabled");
+                        }
+
+                        // Opera 10-11 does not throw on post-comma invalid pseudos
+                        el.querySelectorAll("*,:x");
+                        rbuggyQSA.push(",.*:");
+                    });
+                }
+
+                if ((support.matchesSelector = rnative.test((matches = docElem.matches ||
+                    docElem.webkitMatchesSelector ||
+                    docElem.mozMatchesSelector ||
+                    docElem.oMatchesSelector ||
+                    docElem.msMatchesSelector)))) {
+
+                    assert(function (el) {
+                        // Check to see if it's possible to do matchesSelector
+                        // on a disconnected node (IE 9)
+                        support.disconnectedMatch = matches.call(el, "*");
+
+                        // This should fail with an exception
+                        // Gecko does not error, returns false instead
+                        matches.call(el, "[s!='']:x");
+                        rbuggyMatches.push("!=", pseudos);
+                    });
+                }
+
+                rbuggyQSA = rbuggyQSA.length && new RegExp(rbuggyQSA.join("|"));
+                rbuggyMatches = rbuggyMatches.length && new RegExp(rbuggyMatches.join("|"));
+
+                /* Contains
+    	---------------------------------------------------------------------- */
+                hasCompare = rnative.test(docElem.compareDocumentPosition);
+
+                // Element contains another
+                // Purposefully self-exclusive
+                // As in, an element does not contain itself
+                contains = hasCompare || rnative.test(docElem.contains) ?
+                    function (a, b) {
+                        var adown = a.nodeType === 9 ? a.documentElement : a,
+                            bup = b && b.parentNode;
+                        return a === bup || !!(bup && bup.nodeType === 1 && (
+                            adown.contains ?
+                                adown.contains(bup) :
+                                a.compareDocumentPosition && a.compareDocumentPosition(bup) & 16
+                        ));
+                    } :
+                    function (a, b) {
+                        if (b) {
+                            while ((b = b.parentNode)) {
+                                if (b === a) {
+                                    return true;
+                                }
+                            }
+                        }
+                        return false;
+                    };
+
+                /* Sorting
+    	---------------------------------------------------------------------- */
+
+                // Document order sorting
+                sortOrder = hasCompare ?
+                    function (a, b) {
+
+                        // Flag for duplicate removal
+                        if (a === b) {
+                            hasDuplicate = true;
+                            return 0;
+                        }
+
+                        // Sort on method existence if only one input has compareDocumentPosition
+                        var compare = !a.compareDocumentPosition - !b.compareDocumentPosition;
+                        if (compare) {
+                            return compare;
+                        }
+
+                        // Calculate position if both inputs belong to the same document
+                        compare = (a.ownerDocument || a) === (b.ownerDocument || b) ?
+                            a.compareDocumentPosition(b) :
+
+                            // Otherwise we know they are disconnected
+                            1;
+
+                        // Disconnected nodes
+                        if (compare & 1 ||
+                            (!support.sortDetached && b.compareDocumentPosition(a) === compare)) {
+
+                            // Choose the first element that is related to our preferred document
+                            if (a === document || a.ownerDocument === preferredDoc && contains(preferredDoc, a)) {
+                                return -1;
+                            }
+                            if (b === document || b.ownerDocument === preferredDoc && contains(preferredDoc, b)) {
+                                return 1;
+                            }
+
+                            // Maintain original order
+                            return sortInput ?
+                                (indexOf(sortInput, a) - indexOf(sortInput, b)) :
+                                0;
+                        }
+
+                        return compare & 4 ? -1 : 1;
+                    } :
+                    function (a, b) {
+                        // Exit early if the nodes are identical
+                        if (a === b) {
+                            hasDuplicate = true;
+                            return 0;
+                        }
+
+                        var cur,
+                            i = 0,
+                            aup = a.parentNode,
+                            bup = b.parentNode,
+                            ap = [a],
+                            bp = [b];
+
+                        // Parentless nodes are either documents or disconnected
+                        if (!aup || !bup) {
+                            return a === document ? -1 :
+                                b === document ? 1 :
+                                    aup ? -1 :
+                                        bup ? 1 :
+                                            sortInput ?
+                                                (indexOf(sortInput, a) - indexOf(sortInput, b)) :
+                                                0;
+
+                            // If the nodes are siblings, we can do a quick check
+                        } else if (aup === bup) {
+                            return siblingCheck(a, b);
+                        }
+
+                        // Otherwise we need full lists of their ancestors for comparison
+                        cur = a;
+                        while ((cur = cur.parentNode)) {
+                            ap.unshift(cur);
+                        }
+                        cur = b;
+                        while ((cur = cur.parentNode)) {
+                            bp.unshift(cur);
+                        }
+
+                        // Walk down the tree looking for a discrepancy
+                        while (ap[i] === bp[i]) {
+                            i++;
+                        }
+
+                        return i ?
+                            // Do a sibling check if the nodes have a common ancestor
+                            siblingCheck(ap[i], bp[i]) :
+
+                            // Otherwise nodes in our document sort first
+                            ap[i] === preferredDoc ? -1 :
+                                bp[i] === preferredDoc ? 1 :
+                                    0;
+                    };
+
+                return document;
+            };
+
+            Sizzle.matches = function (expr, elements) {
+                return Sizzle(expr, null, null, elements);
+            };
+
+            Sizzle.matchesSelector = function (elem, expr) {
+                // Set document vars if needed
+                if ((elem.ownerDocument || elem) !== document) {
+                    setDocument(elem);
+                }
+
+                // Make sure that attribute selectors are quoted
+                expr = expr.replace(rattributeQuotes, "='$1']");
+
+                if (support.matchesSelector && documentIsHTML &&
+                    !compilerCache[expr + " "] &&
+                    (!rbuggyMatches || !rbuggyMatches.test(expr)) &&
+                    (!rbuggyQSA || !rbuggyQSA.test(expr))) {
+
+                    try {
+                        var ret = matches.call(elem, expr);
+
+                        // IE 9's matchesSelector returns false on disconnected nodes
+                        if (ret || support.disconnectedMatch ||
+                            // As well, disconnected nodes are said to be in a document
+                            // fragment in IE 9
+                            elem.document && elem.document.nodeType !== 11) {
+                            return ret;
+                        }
+                    } catch (e) {
+                    }
+                }
+
+                return Sizzle(expr, document, null, [elem]).length > 0;
+            };
+
+            Sizzle.contains = function (context, elem) {
+                // Set document vars if needed
+                if ((context.ownerDocument || context) !== document) {
+                    setDocument(context);
+                }
+                return contains(context, elem);
+            };
+
+            Sizzle.attr = function (elem, name) {
+                // Set document vars if needed
+                if ((elem.ownerDocument || elem) !== document) {
+                    setDocument(elem);
+                }
+
+                var fn = Expr.attrHandle[name.toLowerCase()],
+                    // Don't get fooled by Object.prototype properties (jQuery #13807)
+                    val = fn && hasOwn.call(Expr.attrHandle, name.toLowerCase()) ?
+                        fn(elem, name, !documentIsHTML) :
+                        undefined;
+
+                return val !== undefined ?
+                    val :
+                    support.attributes || !documentIsHTML ?
+                        elem.getAttribute(name) :
+                        (val = elem.getAttributeNode(name)) && val.specified ?
+                            val.value :
+                            null;
+            };
+
+            Sizzle.escape = function (sel) {
+                return (sel + "").replace(rcssescape, fcssescape);
+            };
+
+            Sizzle.error = function (msg) {
+                throw new Error("Syntax error, unrecognized expression: " + msg);
+            };
+
+            /**
+             * Document sorting and removing duplicates
+             * @param {ArrayLike} results
+             */
+            Sizzle.uniqueSort = function (results) {
+                var elem,
+                    duplicates = [],
+                    j = 0,
+                    i = 0;
+
+                // Unless we *know* we can detect duplicates, assume their presence
+                hasDuplicate = !support.detectDuplicates;
+                sortInput = !support.sortStable && results.slice(0);
+                results.sort(sortOrder);
+
+                if (hasDuplicate) {
+                    while ((elem = results[i++])) {
+                        if (elem === results[i]) {
+                            j = duplicates.push(i);
+                        }
+                    }
+                    while (j--) {
+                        results.splice(duplicates[j], 1);
+                    }
+                }
+
+                // Clear input after sorting to release objects
+                // See https://github.com/jquery/sizzle/pull/225
+                sortInput = null;
+
+                return results;
+            };
+
+            /**
+             * Utility function for retrieving the text value of an array of DOM nodes
+             * @param {Array|Element} elem
+             */
+            getText = Sizzle.getText = function (elem) {
+                var node,
+                    ret = "",
+                    i = 0,
+                    nodeType = elem.nodeType;
+
+                if (!nodeType) {
+                    // If no nodeType, this is expected to be an array
+                    while ((node = elem[i++])) {
+                        // Do not traverse comment nodes
+                        ret += getText(node);
+                    }
+                } else if (nodeType === 1 || nodeType === 9 || nodeType === 11) {
+                    // Use textContent for elements
+                    // innerText usage removed for consistency of new lines (jQuery #11153)
+                    if (typeof elem.textContent === "string") {
+                        return elem.textContent;
+                    } else {
+                        // Traverse its children
+                        for (elem = elem.firstChild; elem; elem = elem.nextSibling) {
+                            ret += getText(elem);
+                        }
+                    }
+                } else if (nodeType === 3 || nodeType === 4) {
+                    return elem.nodeValue;
+                }
+                // Do not include comment or processing instruction nodes
+
+                return ret;
+            };
+
+            Expr = Sizzle.selectors = {
+
+                // Can be adjusted by the user
+                cacheLength: 50,
+
+                createPseudo: markFunction,
+
+                match: matchExpr,
+
+                attrHandle: {},
+
+                find: {},
+
+                relative: {
+                    ">": {dir: "parentNode", first: true},
+                    " ": {dir: "parentNode"},
+                    "+": {dir: "previousSibling", first: true},
+                    "~": {dir: "previousSibling"}
+                },
+
+                preFilter: {
+                    "ATTR": function (match) {
+                        match[1] = match[1].replace(runescape, funescape);
+
+                        // Move the given value to match[3] whether quoted or unquoted
+                        match[3] = (match[3] || match[4] || match[5] || "").replace(runescape, funescape);
+
+                        if (match[2] === "~=") {
+                            match[3] = " " + match[3] + " ";
+                        }
+
+                        return match.slice(0, 4);
+                    },
+
+                    "CHILD": function (match) {
+                        /* matches from matchExpr["CHILD"]
+    				1 type (only|nth|...)
+    				2 what (child|of-type)
+    				3 argument (even|odd|\d*|\d*n([+-]\d+)?|...)
+    				4 xn-component of xn+y argument ([+-]?\d*n|)
+    				5 sign of xn-component
+    				6 x of xn-component
+    				7 sign of y-component
+    				8 y of y-component
+    			*/
+                        match[1] = match[1].toLowerCase();
+
+                        if (match[1].slice(0, 3) === "nth") {
+                            // nth-* requires argument
+                            if (!match[3]) {
+                                Sizzle.error(match[0]);
+                            }
+
+                            // numeric x and y parameters for Expr.filter.CHILD
+                            // remember that false/true cast respectively to 0/1
+                            match[4] = +(match[4] ? match[5] + (match[6] || 1) : 2 * (match[3] === "even" || match[3] === "odd"));
+                            match[5] = +((match[7] + match[8]) || match[3] === "odd");
+
+                            // other types prohibit arguments
+                        } else if (match[3]) {
+                            Sizzle.error(match[0]);
+                        }
+
+                        return match;
+                    },
+
+                    "PSEUDO": function (match) {
+                        var excess,
+                            unquoted = !match[6] && match[2];
+
+                        if (matchExpr["CHILD"].test(match[0])) {
+                            return null;
+                        }
+
+                        // Accept quoted arguments as-is
+                        if (match[3]) {
+                            match[2] = match[4] || match[5] || "";
+
+                            // Strip excess characters from unquoted arguments
+                        } else if (unquoted && rpseudo.test(unquoted) &&
+                            // Get excess from tokenize (recursively)
+                            (excess = tokenize(unquoted, true)) &&
+                            // advance to the next closing parenthesis
+                            (excess = unquoted.indexOf(")", unquoted.length - excess) - unquoted.length)) {
+
+                            // excess is a negative index
+                            match[0] = match[0].slice(0, excess);
+                            match[2] = unquoted.slice(0, excess);
+                        }
+
+                        // Return only captures needed by the pseudo filter method (type and argument)
+                        return match.slice(0, 3);
+                    }
+                },
+
+                filter: {
+
+                    "TAG": function (nodeNameSelector) {
+                        var nodeName = nodeNameSelector.replace(runescape, funescape).toLowerCase();
+                        return nodeNameSelector === "*" ?
+                            function () {
+                                return true;
+                            } :
+                            function (elem) {
+                                return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;
+                            };
+                    },
+
+                    "CLASS": function (className) {
+                        var pattern = classCache[className + " "];
+
+                        return pattern ||
+                            (pattern = new RegExp("(^|" + whitespace + ")" + className + "(" + whitespace + "|$)")) &&
+                            classCache(className, function (elem) {
+                                return pattern.test(typeof elem.className === "string" && elem.className || typeof elem.getAttribute !== "undefined" && elem.getAttribute("class") || "");
+                            });
+                    },
+
+                    "ATTR": function (name, operator, check) {
+                        return function (elem) {
+                            var result = Sizzle.attr(elem, name);
+
+                            if (result == null) {
+                                return operator === "!=";
+                            }
+                            if (!operator) {
+                                return true;
+                            }
+
+                            result += "";
+
+                            return operator === "=" ? result === check :
+                                operator === "!=" ? result !== check :
+                                    operator === "^=" ? check && result.indexOf(check) === 0 :
+                                        operator === "*=" ? check && result.indexOf(check) > -1 :
+                                            operator === "$=" ? check && result.slice(-check.length) === check :
+                                                operator === "~=" ? (" " + result.replace(rwhitespace, " ") + " ").indexOf(check) > -1 :
+                                                    operator === "|=" ? result === check || result.slice(0, check.length + 1) === check + "-" :
+                                                        false;
+                        };
+                    },
+
+                    "CHILD": function (type, what, argument, first, last) {
+                        var simple = type.slice(0, 3) !== "nth",
+                            forward = type.slice(-4) !== "last",
+                            ofType = what === "of-type";
+
+                        return first === 1 && last === 0 ?
+
+                            // Shortcut for :nth-*(n)
+                            function (elem) {
+                                return !!elem.parentNode;
+                            } :
+
+                            function (elem, context, xml) {
+                                var cache, uniqueCache, outerCache, node, nodeIndex, start,
+                                    dir = simple !== forward ? "nextSibling" : "previousSibling",
+                                    parent = elem.parentNode,
+                                    name = ofType && elem.nodeName.toLowerCase(),
+                                    useCache = !xml && !ofType,
+                                    diff = false;
+
+                                if (parent) {
+
+                                    // :(first|last|only)-(child|of-type)
+                                    if (simple) {
+                                        while (dir) {
+                                            node = elem;
+                                            while ((node = node[dir])) {
+                                                if (ofType ?
+                                                    node.nodeName.toLowerCase() === name :
+                                                    node.nodeType === 1) {
+
+                                                    return false;
+                                                }
+                                            }
+                                            // Reverse direction for :only-* (if we haven't yet done so)
+                                            start = dir = type === "only" && !start && "nextSibling";
+                                        }
+                                        return true;
+                                    }
+
+                                    start = [forward ? parent.firstChild : parent.lastChild];
+
+                                    // non-xml :nth-child(...) stores cache data on `parent`
+                                    if (forward && useCache) {
+
+                                        // Seek `elem` from a previously-cached index
+
+                                        // ...in a gzip-friendly way
+                                        node = parent;
+                                        outerCache = node[expando] || (node[expando] = {});
+
+                                        // Support: IE <9 only
+                                        // Defend against cloned attroperties (jQuery gh-1709)
+                                        uniqueCache = outerCache[node.uniqueID] ||
+                                            (outerCache[node.uniqueID] = {});
+
+                                        cache = uniqueCache[type] || [];
+                                        nodeIndex = cache[0] === dirruns && cache[1];
+                                        diff = nodeIndex && cache[2];
+                                        node = nodeIndex && parent.childNodes[nodeIndex];
+
+                                        while ((node = ++nodeIndex && node && node[dir] ||
+
+                                            // Fallback to seeking `elem` from the start
+                                            (diff = nodeIndex = 0) || start.pop())) {
+
+                                            // When found, cache indexes on `parent` and break
+                                            if (node.nodeType === 1 && ++diff && node === elem) {
+                                                uniqueCache[type] = [dirruns, nodeIndex, diff];
+                                                break;
+                                            }
+                                        }
+
+                                    } else {
+                                        // Use previously-cached element index if available
+                                        if (useCache) {
+                                            // ...in a gzip-friendly way
+                                            node = elem;
+                                            outerCache = node[expando] || (node[expando] = {});
+
+                                            // Support: IE <9 only
+                                            // Defend against cloned attroperties (jQuery gh-1709)
+                                            uniqueCache = outerCache[node.uniqueID] ||
+                                                (outerCache[node.uniqueID] = {});
+
+                                            cache = uniqueCache[type] || [];
+                                            nodeIndex = cache[0] === dirruns && cache[1];
+                                            diff = nodeIndex;
+                                        }
+
+                                        // xml :nth-child(...)
+                                        // or :nth-last-child(...) or :nth(-last)?-of-type(...)
+                                        if (diff === false) {
+                                            // Use the same loop as above to seek `elem` from the start
+                                            while ((node = ++nodeIndex && node && node[dir] ||
+                                                (diff = nodeIndex = 0) || start.pop())) {
+
+                                                if ((ofType ?
+                                                    node.nodeName.toLowerCase() === name :
+                                                    node.nodeType === 1) &&
+                                                    ++diff) {
+
+                                                    // Cache the index of each encountered element
+                                                    if (useCache) {
+                                                        outerCache = node[expando] || (node[expando] = {});
+
+                                                        // Support: IE <9 only
+                                                        // Defend against cloned attroperties (jQuery gh-1709)
+                                                        uniqueCache = outerCache[node.uniqueID] ||
+                                                            (outerCache[node.uniqueID] = {});
+
+                                                        uniqueCache[type] = [dirruns, diff];
+                                                    }
+
+                                                    if (node === elem) {
+                                                        break;
+                                                    }
+                                                }
+                                            }
+                                        }
+                                    }
+
+                                    // Incorporate the offset, then check against cycle size
+                                    diff -= last;
+                                    return diff === first || (diff % first === 0 && diff / first >= 0);
+                                }
+                            };
+                    },
+
+                    "PSEUDO": function (pseudo, argument) {
+                        // pseudo-class names are case-insensitive
+                        // http://www.w3.org/TR/selectors/#pseudo-classes
+                        // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters
+                        // Remember that setFilters inherits from pseudos
+                        var args,
+                            fn = Expr.pseudos[pseudo] || Expr.setFilters[pseudo.toLowerCase()] ||
+                                Sizzle.error("unsupported pseudo: " + pseudo);
+
+                        // The user may use createPseudo to indicate that
+                        // arguments are needed to create the filter function
+                        // just as Sizzle does
+                        if (fn[expando]) {
+                            return fn(argument);
+                        }
+
+                        // But maintain support for old signatures
+                        if (fn.length > 1) {
+                            args = [pseudo, pseudo, "", argument];
+                            return Expr.setFilters.hasOwnProperty(pseudo.toLowerCase()) ?
+                                markFunction(function (seed, matches) {
+                                    var idx,
+                                        matched = fn(seed, argument),
+                                        i = matched.length;
+                                    while (i--) {
+                                        idx = indexOf(seed, matched[i]);
+                                        seed[idx] = !(matches[idx] = matched[i]);
+                                    }
+                                }) :
+                                function (elem) {
+                                    return fn(elem, 0, args);
+                                };
+                        }
+
+                        return fn;
+                    }
+                },
+
+                pseudos: {
+                    // Potentially complex pseudos
+                    "not": markFunction(function (selector) {
+                        // Trim the selector passed to compile
+                        // to avoid treating leading and trailing
+                        // spaces as combinators
+                        var input = [],
+                            results = [],
+                            matcher = compile(selector.replace(rtrim, "$1"));
+
+                        return matcher[expando] ?
+                            markFunction(function (seed, matches, context, xml) {
+                                var elem,
+                                    unmatched = matcher(seed, null, xml, []),
+                                    i = seed.length;
+
+                                // Match elements unmatched by `matcher`
+                                while (i--) {
+                                    if ((elem = unmatched[i])) {
+                                        seed[i] = !(matches[i] = elem);
+                                    }
+                                }
+                            }) :
+                            function (elem, context, xml) {
+                                input[0] = elem;
+                                matcher(input, null, xml, results);
+                                // Don't keep the element (issue #299)
+                                input[0] = null;
+                                return !results.pop();
+                            };
+                    }),
+
+                    "has": markFunction(function (selector) {
+                        return function (elem) {
+                            return Sizzle(selector, elem).length > 0;
+                        };
+                    }),
+
+                    "contains": markFunction(function (text) {
+                        text = text.replace(runescape, funescape);
+                        return function (elem) {
+                            return (elem.textContent || elem.innerText || getText(elem)).indexOf(text) > -1;
+                        };
+                    }),
+
+                    // "Whether an element is represented by a :lang() selector
+                    // is based solely on the element's language value
+                    // being equal to the identifier C,
+                    // or beginning with the identifier C immediately followed by "-".
+                    // The matching of C against the element's language value is performed case-insensitively.
+                    // The identifier C does not have to be a valid language name."
+                    // http://www.w3.org/TR/selectors/#lang-pseudo
+                    "lang": markFunction(function (lang) {
+                        // lang value must be a valid identifier
+                        if (!ridentifier.test(lang || "")) {
+                            Sizzle.error("unsupported lang: " + lang);
+                        }
+                        lang = lang.replace(runescape, funescape).toLowerCase();
+                        return function (elem) {
+                            var elemLang;
+                            do {
+                                if ((elemLang = documentIsHTML ?
+                                    elem.lang :
+                                    elem.getAttribute("xml:lang") || elem.getAttribute("lang"))) {
+
+                                    elemLang = elemLang.toLowerCase();
+                                    return elemLang === lang || elemLang.indexOf(lang + "-") === 0;
+                                }
+                            } while ((elem = elem.parentNode) && elem.nodeType === 1);
+                            return false;
+                        };
+                    }),
+
+                    // Miscellaneous
+                    "target": function (elem) {
+                        var hash = window.location && window.location.hash;
+                        return hash && hash.slice(1) === elem.id;
+                    },
+
+                    "root": function (elem) {
+                        return elem === docElem;
+                    },
+
+                    "focus": function (elem) {
+                        return elem === document.activeElement && (!document.hasFocus || document.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex);
+                    },
+
+                    // Boolean properties
+                    "enabled": createDisabledPseudo(false),
+                    "disabled": createDisabledPseudo(true),
+
+                    "checked": function (elem) {
+                        // In CSS3, :checked should return both checked and selected elements
+                        // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked
+                        var nodeName = elem.nodeName.toLowerCase();
+                        return (nodeName === "input" && !!elem.checked) || (nodeName === "option" && !!elem.selected);
+                    },
+
+                    "selected": function (elem) {
+                        // Accessing this property makes selected-by-default
+                        // options in Safari work properly
+                        if (elem.parentNode) {
+                            elem.parentNode.selectedIndex;
+                        }
+
+                        return elem.selected === true;
+                    },
+
+                    // Contents
+                    "empty": function (elem) {
+                        // http://www.w3.org/TR/selectors/#empty-pseudo
+                        // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),
+                        //   but not by others (comment: 8; processing instruction: 7; etc.)
+                        // nodeType < 6 works because attributes (2) do not appear as children
+                        for (elem = elem.firstChild; elem; elem = elem.nextSibling) {
+                            if (elem.nodeType < 6) {
+                                return false;
+                            }
+                        }
+                        return true;
+                    },
+
+                    "parent": function (elem) {
+                        return !Expr.pseudos["empty"](elem);
+                    },
+
+                    // Element/input types
+                    "header": function (elem) {
+                        return rheader.test(elem.nodeName);
+                    },
+
+                    "input": function (elem) {
+                        return rinputs.test(elem.nodeName);
+                    },
+
+                    "button": function (elem) {
+                        var name = elem.nodeName.toLowerCase();
+                        return name === "input" && elem.type === "button" || name === "button";
+                    },
+
+                    "text": function (elem) {
+                        var attr;
+                        return elem.nodeName.toLowerCase() === "input" &&
+                            elem.type === "text" &&
+
+                            // Support: IE<8
+                            // New HTML5 attribute values (e.g., "search") appear with elem.type === "text"
+                            ((attr = elem.getAttribute("type")) == null || attr.toLowerCase() === "text");
+                    },
+
+                    // Position-in-collection
+                    "first": createPositionalPseudo(function () {
+                        return [0];
+                    }),
+
+                    "last": createPositionalPseudo(function (matchIndexes, length) {
+                        return [length - 1];
+                    }),
+
+                    "eq": createPositionalPseudo(function (matchIndexes, length, argument) {
+                        return [argument < 0 ? argument + length : argument];
+                    }),
+
+                    "even": createPositionalPseudo(function (matchIndexes, length) {
+                        var i = 0;
+                        for (; i < length; i += 2) {
+                            matchIndexes.push(i);
+                        }
+                        return matchIndexes;
+                    }),
+
+                    "odd": createPositionalPseudo(function (matchIndexes, length) {
+                        var i = 1;
+                        for (; i < length; i += 2) {
+                            matchIndexes.push(i);
+                        }
+                        return matchIndexes;
+                    }),
+
+                    "lt": createPositionalPseudo(function (matchIndexes, length, argument) {
+                        var i = argument < 0 ? argument + length : argument;
+                        for (; --i >= 0;) {
+                            matchIndexes.push(i);
+                        }
+                        return matchIndexes;
+                    }),
+
+                    "gt": createPositionalPseudo(function (matchIndexes, length, argument) {
+                        var i = argument < 0 ? argument + length : argument;
+                        for (; ++i < length;) {
+                            matchIndexes.push(i);
+                        }
+                        return matchIndexes;
+                    })
+                }
+            };
+
+            Expr.pseudos["nth"] = Expr.pseudos["eq"];
+
+    // Add button/input type pseudos
+            for (i in {radio: true, checkbox: true, file: true, password: true, image: true}) {
+                Expr.pseudos[i] = createInputPseudo(i);
+            }
+            for (i in {submit: true, reset: true}) {
+                Expr.pseudos[i] = createButtonPseudo(i);
+            }
+
+    // Easy API for creating new setFilters
+            function setFilters() {
+            }
+
+            setFilters.prototype = Expr.filters = Expr.pseudos;
+            Expr.setFilters = new setFilters();
+
+            tokenize = Sizzle.tokenize = function (selector, parseOnly) {
+                var matched, match, tokens, type,
+                    soFar, groups, preFilters,
+                    cached = tokenCache[selector + " "];
+
+                if (cached) {
+                    return parseOnly ? 0 : cached.slice(0);
+                }
+
+                soFar = selector;
+                groups = [];
+                preFilters = Expr.preFilter;
+
+                while (soFar) {
+
+                    // Comma and first run
+                    if (!matched || (match = rcomma.exec(soFar))) {
+                        if (match) {
+                            // Don't consume trailing commas as valid
+                            soFar = soFar.slice(match[0].length) || soFar;
+                        }
+                        groups.push((tokens = []));
+                    }
+
+                    matched = false;
+
+                    // Combinators
+                    if ((match = rcombinators.exec(soFar))) {
+                        matched = match.shift();
+                        tokens.push({
+                            value: matched,
+                            // Cast descendant combinators to space
+                            type: match[0].replace(rtrim, " ")
+                        });
+                        soFar = soFar.slice(matched.length);
+                    }
+
+                    // Filters
+                    for (type in Expr.filter) {
+                        if ((match = matchExpr[type].exec(soFar)) && (!preFilters[type] ||
+                            (match = preFilters[type](match)))) {
+                            matched = match.shift();
+                            tokens.push({
+                                value: matched,
+                                type: type,
+                                matches: match
+                            });
+                            soFar = soFar.slice(matched.length);
+                        }
+                    }
+
+                    if (!matched) {
+                        break;
+                    }
+                }
+
+                // Return the length of the invalid excess
+                // if we're just parsing
+                // Otherwise, throw an error or return tokens
+                return parseOnly ?
+                    soFar.length :
+                    soFar ?
+                        Sizzle.error(selector) :
+                        // Cache the tokens
+                        tokenCache(selector, groups).slice(0);
+            };
+
+            function toSelector(tokens) {
+                var i = 0,
+                    len = tokens.length,
+                    selector = "";
+                for (; i < len; i++) {
+                    selector += tokens[i].value;
+                }
+                return selector;
+            }
+
+            function addCombinator(matcher, combinator, base) {
+                var dir = combinator.dir,
+                    skip = combinator.next,
+                    key = skip || dir,
+                    checkNonElements = base && key === "parentNode",
+                    doneName = done++;
+
+                return combinator.first ?
+                    // Check against closest ancestor/preceding element
+                    function (elem, context, xml) {
+                        while ((elem = elem[dir])) {
+                            if (elem.nodeType === 1 || checkNonElements) {
+                                return matcher(elem, context, xml);
+                            }
+                        }
+                        return false;
+                    } :
+
+                    // Check against all ancestor/preceding elements
+                    function (elem, context, xml) {
+                        var oldCache, uniqueCache, outerCache,
+                            newCache = [dirruns, doneName];
+
+                        // We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching
+                        if (xml) {
+                            while ((elem = elem[dir])) {
+                                if (elem.nodeType === 1 || checkNonElements) {
+                                    if (matcher(elem, context, xml)) {
+                                        return true;
+                                    }
+                                }
+                            }
+                        } else {
+                            while ((elem = elem[dir])) {
+                                if (elem.nodeType === 1 || checkNonElements) {
+                                    outerCache = elem[expando] || (elem[expando] = {});
+
+                                    // Support: IE <9 only
+                                    // Defend against cloned attroperties (jQuery gh-1709)
+                                    uniqueCache = outerCache[elem.uniqueID] || (outerCache[elem.uniqueID] = {});
+
+                                    if (skip && skip === elem.nodeName.toLowerCase()) {
+                                        elem = elem[dir] || elem;
+                                    } else if ((oldCache = uniqueCache[key]) &&
+                                        oldCache[0] === dirruns && oldCache[1] === doneName) {
+
+                                        // Assign to newCache so results back-propagate to previous elements
+                                        return (newCache[2] = oldCache[2]);
+                                    } else {
+                                        // Reuse newcache so results back-propagate to previous elements
+                                        uniqueCache[key] = newCache;
+
+                                        // A match means we're done; a fail means we have to keep checking
+                                        if ((newCache[2] = matcher(elem, context, xml))) {
+                                            return true;
+                                        }
+                                    }
+                                }
+                            }
+                        }
+                        return false;
+                    };
+            }
+
+            function elementMatcher(matchers) {
+                return matchers.length > 1 ?
+                    function (elem, context, xml) {
+                        var i = matchers.length;
+                        while (i--) {
+                            if (!matchers[i](elem, context, xml)) {
+                                return false;
+                            }
+                        }
+                        return true;
+                    } :
+                    matchers[0];
+            }
+
+            function multipleContexts(selector, contexts, results) {
+                var i = 0,
+                    len = contexts.length;
+                for (; i < len; i++) {
+                    Sizzle(selector, contexts[i], results);
+                }
+                return results;
+            }
+
+            function condense(unmatched, map, filter, context, xml) {
+                var elem,
+                    newUnmatched = [],
+                    i = 0,
+                    len = unmatched.length,
+                    mapped = map != null;
+
+                for (; i < len; i++) {
+                    if ((elem = unmatched[i])) {
+                        if (!filter || filter(elem, context, xml)) {
+                            newUnmatched.push(elem);
+                            if (mapped) {
+                                map.push(i);
+                            }
+                        }
+                    }
+                }
+
+                return newUnmatched;
+            }
+
+            function setMatcher(preFilter, selector, matcher, postFilter, postFinder, postSelector) {
+                if (postFilter && !postFilter[expando]) {
+                    postFilter = setMatcher(postFilter);
+                }
+                if (postFinder && !postFinder[expando]) {
+                    postFinder = setMatcher(postFinder, postSelector);
+                }
+                return markFunction(function (seed, results, context, xml) {
+                    var temp, i, elem,
+                        preMap = [],
+                        postMap = [],
+                        preexisting = results.length,
+
+                        // Get initial elements from seed or context
+                        elems = seed || multipleContexts(selector || "*", context.nodeType ? [context] : context, []),
+
+                        // Prefilter to get matcher input, preserving a map for seed-results synchronization
+                        matcherIn = preFilter && (seed || !selector) ?
+                            condense(elems, preMap, preFilter, context, xml) :
+                            elems,
+
+                        matcherOut = matcher ?
+                            // If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,
+                            postFinder || (seed ? preFilter : preexisting || postFilter) ?
+
+                                // ...intermediate processing is necessary
+                                [] :
+
+                                // ...otherwise use results directly
+                                results :
+                            matcherIn;
+
+                    // Find primary matches
+                    if (matcher) {
+                        matcher(matcherIn, matcherOut, context, xml);
+                    }
+
+                    // Apply postFilter
+                    if (postFilter) {
+                        temp = condense(matcherOut, postMap);
+                        postFilter(temp, [], context, xml);
+
+                        // Un-match failing elements by moving them back to matcherIn
+                        i = temp.length;
+                        while (i--) {
+                            if ((elem = temp[i])) {
+                                matcherOut[postMap[i]] = !(matcherIn[postMap[i]] = elem);
+                            }
+                        }
+                    }
+
+                    if (seed) {
+                        if (postFinder || preFilter) {
+                            if (postFinder) {
+                                // Get the final matcherOut by condensing this intermediate into postFinder contexts
+                                temp = [];
+                                i = matcherOut.length;
+                                while (i--) {
+                                    if ((elem = matcherOut[i])) {
+                                        // Restore matcherIn since elem is not yet a final match
+                                        temp.push((matcherIn[i] = elem));
+                                    }
+                                }
+                                postFinder(null, (matcherOut = []), temp, xml);
+                            }
+
+                            // Move matched elements from seed to results to keep them synchronized
+                            i = matcherOut.length;
+                            while (i--) {
+                                if ((elem = matcherOut[i]) &&
+                                    (temp = postFinder ? indexOf(seed, elem) : preMap[i]) > -1) {
+
+                                    seed[temp] = !(results[temp] = elem);
+                                }
+                            }
+                        }
+
+                        // Add elements to results, through postFinder if defined
+                    } else {
+                        matcherOut = condense(
+                            matcherOut === results ?
+                                matcherOut.splice(preexisting, matcherOut.length) :
+                                matcherOut
+                        );
+                        if (postFinder) {
+                            postFinder(null, results, matcherOut, xml);
+                        } else {
+                            push.apply(results, matcherOut);
+                        }
+                    }
+                });
+            }
+
+            function matcherFromTokens(tokens) {
+                var checkContext, matcher, j,
+                    len = tokens.length,
+                    leadingRelative = Expr.relative[tokens[0].type],
+                    implicitRelative = leadingRelative || Expr.relative[" "],
+                    i = leadingRelative ? 1 : 0,
+
+                    // The foundational matcher ensures that elements are reachable from top-level context(s)
+                    matchContext = addCombinator(function (elem) {
+                        return elem === checkContext;
+                    }, implicitRelative, true),
+                    matchAnyContext = addCombinator(function (elem) {
+                        return indexOf(checkContext, elem) > -1;
+                    }, implicitRelative, true),
+                    matchers = [function (elem, context, xml) {
+                        var ret = (!leadingRelative && (xml || context !== outermostContext)) || (
+                            (checkContext = context).nodeType ?
+                                matchContext(elem, context, xml) :
+                                matchAnyContext(elem, context, xml));
+                        // Avoid hanging onto element (issue #299)
+                        checkContext = null;
+                        return ret;
+                    }];
+
+                for (; i < len; i++) {
+                    if ((matcher = Expr.relative[tokens[i].type])) {
+                        matchers = [addCombinator(elementMatcher(matchers), matcher)];
+                    } else {
+                        matcher = Expr.filter[tokens[i].type].apply(null, tokens[i].matches);
+
+                        // Return special upon seeing a positional matcher
+                        if (matcher[expando]) {
+                            // Find the next relative operator (if any) for proper handling
+                            j = ++i;
+                            for (; j < len; j++) {
+                                if (Expr.relative[tokens[j].type]) {
+                                    break;
+                                }
+                            }
+                            return setMatcher(
+                                i > 1 && elementMatcher(matchers),
+                                i > 1 && toSelector(
+                                // If the preceding token was a descendant combinator, insert an implicit any-element `*`
+                                tokens.slice(0, i - 1).concat({value: tokens[i - 2].type === " " ? "*" : ""})
+                                ).replace(rtrim, "$1"),
+                                matcher,
+                                i < j && matcherFromTokens(tokens.slice(i, j)),
+                                j < len && matcherFromTokens((tokens = tokens.slice(j))),
+                                j < len && toSelector(tokens)
+                            );
+                        }
+                        matchers.push(matcher);
+                    }
+                }
+
+                return elementMatcher(matchers);
+            }
+
+            function matcherFromGroupMatchers(elementMatchers, setMatchers) {
+                var bySet = setMatchers.length > 0,
+                    byElement = elementMatchers.length > 0,
+                    superMatcher = function (seed, context, xml, results, outermost) {
+                        var elem, j, matcher,
+                            matchedCount = 0,
+                            i = "0",
+                            unmatched = seed && [],
+                            setMatched = [],
+                            contextBackup = outermostContext,
+                            // We must always have either seed elements or outermost context
+                            elems = seed || byElement && Expr.find["TAG"]("*", outermost),
+                            // Use integer dirruns iff this is the outermost matcher
+                            dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.random() || 0.1),
+                            len = elems.length;
+
+                        if (outermost) {
+                            outermostContext = context === document || context || outermost;
+                        }
+
+                        // Add elements passing elementMatchers directly to results
+                        // Support: IE<9, Safari
+                        // Tolerate NodeList properties (IE: "length"; Safari: <number>) matching elements by id
+                        for (; i !== len && (elem = elems[i]) != null; i++) {
+                            if (byElement && elem) {
+                                j = 0;
+                                if (!context && elem.ownerDocument !== document) {
+                                    setDocument(elem);
+                                    xml = !documentIsHTML;
+                                }
+                                while ((matcher = elementMatchers[j++])) {
+                                    if (matcher(elem, context || document, xml)) {
+                                        results.push(elem);
+                                        break;
+                                    }
+                                }
+                                if (outermost) {
+                                    dirruns = dirrunsUnique;
+                                }
+                            }
+
+                            // Track unmatched elements for set filters
+                            if (bySet) {
+                                // They will have gone through all possible matchers
+                                if ((elem = !matcher && elem)) {
+                                    matchedCount--;
+                                }
+
+                                // Lengthen the array for every element, matched or not
+                                if (seed) {
+                                    unmatched.push(elem);
+                                }
+                            }
+                        }
+
+                        // `i` is now the count of elements visited above, and adding it to `matchedCount`
+                        // makes the latter nonnegative.
+                        matchedCount += i;
+
+                        // Apply set filters to unmatched elements
+                        // NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`
+                        // equals `i`), unless we didn't visit _any_ elements in the above loop because we have
+                        // no element matchers and no seed.
+                        // Incrementing an initially-string "0" `i` allows `i` to remain a string only in that
+                        // case, which will result in a "00" `matchedCount` that differs from `i` but is also
+                        // numerically zero.
+                        if (bySet && i !== matchedCount) {
+                            j = 0;
+                            while ((matcher = setMatchers[j++])) {
+                                matcher(unmatched, setMatched, context, xml);
+                            }
+
+                            if (seed) {
+                                // Reintegrate element matches to eliminate the need for sorting
+                                if (matchedCount > 0) {
+                                    while (i--) {
+                                        if (!(unmatched[i] || setMatched[i])) {
+                                            setMatched[i] = pop.call(results);
+                                        }
+                                    }
+                                }
+
+                                // Discard index placeholder values to get only actual matches
+                                setMatched = condense(setMatched);
+                            }
+
+                            // Add matches to results
+                            push.apply(results, setMatched);
+
+                            // Seedless set matches succeeding multiple successful matchers stipulate sorting
+                            if (outermost && !seed && setMatched.length > 0 &&
+                                (matchedCount + setMatchers.length) > 1) {
+
+                                Sizzle.uniqueSort(results);
+                            }
+                        }
+
+                        // Override manipulation of globals by nested matchers
+                        if (outermost) {
+                            dirruns = dirrunsUnique;
+                            outermostContext = contextBackup;
+                        }
+
+                        return unmatched;
+                    };
+
+                return bySet ?
+                    markFunction(superMatcher) :
+                    superMatcher;
+            }
+
+            compile = Sizzle.compile = function (selector, match /* Internal Use Only */) {
+                var i,
+                    setMatchers = [],
+                    elementMatchers = [],
+                    cached = compilerCache[selector + " "];
+
+                if (!cached) {
+                    // Generate a function of recursive functions that can be used to check each element
+                    if (!match) {
+                        match = tokenize(selector);
+                    }
+                    i = match.length;
+                    while (i--) {
+                        cached = matcherFromTokens(match[i]);
+                        if (cached[expando]) {
+                            setMatchers.push(cached);
+                        } else {
+                            elementMatchers.push(cached);
+                        }
+                    }
+
+                    // Cache the compiled function
+                    cached = compilerCache(selector, matcherFromGroupMatchers(elementMatchers, setMatchers));
+
+                    // Save selector and tokenization
+                    cached.selector = selector;
+                }
+                return cached;
+            };
+
+            /**
+             * A low-level selection function that works with Sizzle's compiled
+             *  selector functions
+             * @param {String|Function} selector A selector or a pre-compiled
+             *  selector function built with Sizzle.compile
+             * @param {Element} context
+             * @param {Array} [results]
+             * @param {Array} [seed] A set of elements to match against
+             */
+            select = Sizzle.select = function (selector, context, results, seed) {
+                var i, tokens, token, type, find,
+                    compiled = typeof selector === "function" && selector,
+                    match = !seed && tokenize((selector = compiled.selector || selector));
+
+                results = results || [];
+
+                // Try to minimize operations if there is only one selector in the list and no seed
+                // (the latter of which guarantees us context)
+                if (match.length === 1) {
+
+                    // Reduce context if the leading compound selector is an ID
+                    tokens = match[0] = match[0].slice(0);
+                    if (tokens.length > 2 && (token = tokens[0]).type === "ID" &&
+                        context.nodeType === 9 && documentIsHTML && Expr.relative[tokens[1].type]) {
+
+                        context = (Expr.find["ID"](token.matches[0].replace(runescape, funescape), context) || [])[0];
+                        if (!context) {
+                            return results;
+
+                            // Precompiled matchers will still verify ancestry, so step up a level
+                        } else if (compiled) {
+                            context = context.parentNode;
+                        }
+
+                        selector = selector.slice(tokens.shift().value.length);
+                    }
+
+                    // Fetch a seed set for right-to-left matching
+                    i = matchExpr["needsContext"].test(selector) ? 0 : tokens.length;
+                    while (i--) {
+                        token = tokens[i];
+
+                        // Abort if we hit a combinator
+                        if (Expr.relative[(type = token.type)]) {
+                            break;
+                        }
+                        if ((find = Expr.find[type])) {
+                            // Search, expanding context for leading sibling combinators
+                            if ((seed = find(
+                                token.matches[0].replace(runescape, funescape),
+                                rsibling.test(tokens[0].type) && testContext(context.parentNode) || context
+                            ))) {
+
+                                // If seed is empty or no tokens remain, we can return early
+                                tokens.splice(i, 1);
+                                selector = seed.length && toSelector(tokens);
+                                if (!selector) {
+                                    push.apply(results, seed);
+                                    return results;
+                                }
+
+                                break;
+                            }
+                        }
+                    }
+                }
+
+                // Compile and execute a filtering function if one is not provided
+                // Provide `match` to avoid retokenization if we modified the selector above
+                (compiled || compile(selector, match))(
+                    seed,
+                    context,
+                    !documentIsHTML,
+                    results,
+                    !context || rsibling.test(selector) && testContext(context.parentNode) || context
+                );
+                return results;
+            };
+
+    // One-time assignments
+
+    // Sort stability
+            support.sortStable = expando.split("").sort(sortOrder).join("") === expando;
+
+    // Support: Chrome 14-35+
+    // Always assume duplicates if they aren't passed to the comparison function
+            support.detectDuplicates = !!hasDuplicate;
+
+    // Initialize against the default document
+            setDocument();
+            
+            return Sizzle;
+
+        })(window);
+
+
+    jQuery.find = Sizzle;
+    jQuery.expr = Sizzle.selectors;
+
+    // Deprecated
+    jQuery.expr[":"] = jQuery.expr.pseudos;
+    jQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort;
+    jQuery.text = Sizzle.getText;
+    jQuery.isXMLDoc = Sizzle.isXML;
+    jQuery.contains = Sizzle.contains;
+    jQuery.escapeSelector = Sizzle.escape;
+
+
+    var dir = function (elem, dir, until) {
+        var matched = [],
+            truncate = until !== undefined;
+
+        while ((elem = elem[dir]) && elem.nodeType !== 9) {
+            if (elem.nodeType === 1) {
+                if (truncate && jQuery(elem).is(until)) {
+                    break;
+                }
+                matched.push(elem);
+            }
+        }
+        return matched;
+    };
+
+
+    var siblings = function (n, elem) {
+        var matched = [];
+
+        for (; n; n = n.nextSibling) {
+            if (n.nodeType === 1 && n !== elem) {
+                matched.push(n);
+            }
+        }
+
+        return matched;
+    };
+
+
+    var rneedsContext = jQuery.expr.match.needsContext;
+
+
+    function nodeName(elem, name) {
+
+        return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();
+
+    }
+    var rsingleTag = (/^<([a-z][^\/\0>:\x20\t\r\n\f]*)[\x20\t\r\n\f]*\/?>(?:<\/\1>|)$/i);
+
+
+    // Implement the identical functionality for filter and not
+    function winnow(elements, qualifier, not) {
+        if (isFunction(qualifier)) {
+            return jQuery.grep(elements, function (elem, i) {
+                return !!qualifier.call(elem, i, elem) !== not;
+            });
+        }
+
+        // Single element
+        if (qualifier.nodeType) {
+            return jQuery.grep(elements, function (elem) {
+                return (elem === qualifier) !== not;
+            });
+        }
+
+        // Arraylike of elements (jQuery, arguments, Array)
+        if (typeof qualifier !== "string") {
+            return jQuery.grep(elements, function (elem) {
+                return (indexOf.call(qualifier, elem) > -1) !== not;
+            });
+        }
+
+        // Filtered directly for both simple and complex selectors
+        return jQuery.filter(qualifier, elements, not);
+    }
+
+    jQuery.filter = function (expr, elems, not) {
+        var elem = elems[0];
+
+        if (not) {
+            expr = ":not(" + expr + ")";
+        }
+
+        if (elems.length === 1 && elem.nodeType === 1) {
+            return jQuery.find.matchesSelector(elem, expr) ? [elem] : [];
+        }
+
+        return jQuery.find.matches(expr, jQuery.grep(elems, function (elem) {
+            return elem.nodeType === 1;
+        }));
+    };
+
+    jQuery.fn.extend({
+        find: function (selector) {
+            var i, ret,
+                len = this.length,
+                self = this;
+
+            if (typeof selector !== "string") {
+                return this.pushStack(jQuery(selector).filter(function () {
+                    for (i = 0; i < len; i++) {
+                        if (jQuery.contains(self[i], this)) {
+                            return true;
+                        }
+                    }
+                }));
+            }
+
+            ret = this.pushStack([]);
+
+            for (i = 0; i < len; i++) {
+                jQuery.find(selector, self[i], ret);
+            }
+
+            return len > 1 ? jQuery.uniqueSort(ret) : ret;
+        },
+        filter: function (selector) {
+            return this.pushStack(winnow(this, selector || [], false));
+        },
+        not: function (selector) {
+            return this.pushStack(winnow(this, selector || [], true));
+        },
+        is: function (selector) {
+            return !!winnow(
+                this,
+
+                // If this is a positional/relative selector, check membership in the returned set
+                // so $("p:first").is("p:last") won't return true for a doc with two "p".
+                typeof selector === "string" && rneedsContext.test(selector) ?
+                    jQuery(selector) :
+                    selector || [],
+                false
+            ).length;
+        }
+    });
+
+
+    // Initialize a jQuery object
+
+
+    // A central reference to the root jQuery(document)
+    var rootjQuery,
+
+        // A simple way to check for HTML strings
+        // Prioritize #id over <tag> to avoid XSS via location.hash (#9521)
+        // Strict HTML recognition (#11290: must start with <)
+        // Shortcut simple #id case for speed
+        rquickExpr = /^(?:\s*(<[\w\W]+>)[^>]*|#([\w-]+))$/,
+
+        init$2 = jQuery.fn.init = function (selector, context, root) {
+            var match, elem;
+
+            // HANDLE: $(""), $(null), $(undefined), $(false)
+            if (!selector) {
+                return this;
+            }
+
+            // Method init() accepts an alternate rootjQuery
+            // so migrate can support jQuery.sub (gh-2101)
+            root = root || rootjQuery;
+
+            // Handle HTML strings
+            if (typeof selector === "string") {
+                if (selector[0] === "<" &&
+                    selector[selector.length - 1] === ">" &&
+                    selector.length >= 3) {
+
+                    // Assume that strings that start and end with <> are HTML and skip the regex check
+                    match = [null, selector, null];
+
+                } else {
+                    match = rquickExpr.exec(selector);
+                }
+
+                // Match html or make sure no context is specified for #id
+                if (match && (match[1] || !context)) {
+
+                    // HANDLE: $(html) -> $(array)
+                    if (match[1]) {
+                        context = context instanceof jQuery ? context[0] : context;
+
+                        // Option to run scripts is true for back-compat
+                        // Intentionally let the error be thrown if parseHTML is not present
+                        jQuery.merge(this, jQuery.parseHTML(
+                            match[1],
+                            context && context.nodeType ? context.ownerDocument || context : document$1,
+                            true
+                        ));
+
+                        // HANDLE: $(html, props)
+                        if (rsingleTag.test(match[1]) && jQuery.isPlainObject(context)) {
+                            for (match in context) {
+
+                                // Properties of context are called as methods if possible
+                                if (isFunction(this[match])) {
+                                    this[match](context[match]);
+
+                                    // ...and otherwise set as attributes
+                                } else {
+                                    this.attr(match, context[match]);
+                                }
+                            }
+                        }
+
+                        return this;
+
+                        // HANDLE: $(#id)
+                    } else {
+                        elem = document$1.getElementById(match[2]);
+
+                        if (elem) {
+
+                            // Inject the element directly into the jQuery object
+                            this[0] = elem;
+                            this.length = 1;
+                        }
+                        return this;
+                    }
+
+                    // HANDLE: $(expr, $(...))
+                } else if (!context || context.jquery) {
+                    return (context || root).find(selector);
+
+                    // HANDLE: $(expr, context)
+                    // (which is just equivalent to: $(context).find(expr)
+                } else {
+                    return this.constructor(context).find(selector);
+                }
+
+                // HANDLE: $(DOMElement)
+            } else if (selector.nodeType) {
+                this[0] = selector;
+                this.length = 1;
+                return this;
+
+                // HANDLE: $(function)
+                // Shortcut for document ready
+            } else if (isFunction(selector)) {
+                return root.ready !== undefined ?
+                    root.ready(selector) :
+
+                    // Execute immediately if ready is not present
+                    selector(jQuery);
+            }
+
+            return jQuery.makeArray(selector, this);
+        };
+
+    // Give the init function the jQuery prototype for later instantiation
+    init$2.prototype = jQuery.fn;
+
+    // Initialize central reference
+    rootjQuery = jQuery(document$1);
+
+
+    var rparentsprev = /^(?:parents|prev(?:Until|All))/,
+
+        // Methods guaranteed to produce a unique set when starting from a unique set
+        guaranteedUnique = {
+            children: true,
+            contents: true,
+            next: true,
+            prev: true
+        };
+
+    jQuery.fn.extend({
+        has: function (target) {
+            var targets = jQuery(target, this),
+                l = targets.length;
+
+            return this.filter(function () {
+                var i = 0;
+                for (; i < l; i++) {
+                    if (jQuery.contains(this, targets[i])) {
+                        return true;
+                    }
+                }
+            });
+        },
+
+        closest: function (selectors, context) {
+            var cur,
+                i = 0,
+                l = this.length,
+                matched = [],
+                targets = typeof selectors !== "string" && jQuery(selectors);
+
+            // Positional selectors never match, since there's no _selection_ context
+            if (!rneedsContext.test(selectors)) {
+                for (; i < l; i++) {
+                    for (cur = this[i]; cur && cur !== context; cur = cur.parentNode) {
+
+                        // Always skip document fragments
+                        if (cur.nodeType < 11 && (targets ?
+                            targets.index(cur) > -1 :
+
+                            // Don't pass non-elements to Sizzle
+                            cur.nodeType === 1 &&
+                            jQuery.find.matchesSelector(cur, selectors))) {
+
+                            matched.push(cur);
+                            break;
+                        }
+                    }
+                }
+            }
+
+            return this.pushStack(matched.length > 1 ? jQuery.uniqueSort(matched) : matched);
+        },
+
+        // Determine the position of an element within the set
+        index: function (elem) {
+
+            // No argument, return index in parent
+            if (!elem) {
+                return (this[0] && this[0].parentNode) ? this.first().prevAll().length : -1;
+            }
+
+            // Index in selector
+            if (typeof elem === "string") {
+                return indexOf.call(jQuery(elem), this[0]);
+            }
+
+            // Locate the position of the desired element
+            return indexOf.call(this,
+
+                // If it receives a jQuery object, the first element is used
+                elem.jquery ? elem[0] : elem
+            );
+        },
+
+        add: function (selector, context) {
+            return this.pushStack(
+                jQuery.uniqueSort(
+                    jQuery.merge(this.get(), jQuery(selector, context))
+                )
+            );
+        },
+
+        addBack: function (selector) {
+            return this.add(selector == null ?
+                this.prevObject : this.prevObject.filter(selector)
+            );
+        }
+    });
+
+    function sibling(cur, dir) {
+        while ((cur = cur[dir]) && cur.nodeType !== 1) {
+        }
+        return cur;
+    }
+
+    jQuery.each({
+        parent: function (elem) {
+            var parent = elem.parentNode;
+            return parent && parent.nodeType !== 11 ? parent : null;
+        },
+        parents: function (elem) {
+            return dir(elem, "parentNode");
+        },
+        parentsUntil: function (elem, i, until) {
+            return dir(elem, "parentNode", until);
+        },
+        next: function (elem) {
+            return sibling(elem, "nextSibling");
+        },
+        prev: function (elem) {
+            return sibling(elem, "previousSibling");
+        },
+        nextAll: function (elem) {
+            return dir(elem, "nextSibling");
+        },
+        prevAll: function (elem) {
+            return dir(elem, "previousSibling");
+        },
+        nextUntil: function (elem, i, until) {
+            return dir(elem, "nextSibling", until);
+        },
+        prevUntil: function (elem, i, until) {
+            return dir(elem, "previousSibling", until);
+        },
+        siblings: function (elem) {
+            return siblings((elem.parentNode || {}).firstChild, elem);
+        },
+        children: function (elem) {
+            return siblings(elem.firstChild);
+        },
+        contents: function (elem) {
+            if (nodeName(elem, "iframe")) {
+                return elem.contentDocument;
+            }
+
+            // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only
+            // Treat the template element as a regular one in browsers that
+            // don't support it.
+            if (nodeName(elem, "template")) {
+                elem = elem.content || elem;
+            }
+
+            return jQuery.merge([], elem.childNodes);
+        }
+    }, function (name, fn) {
+        jQuery.fn[name] = function (until, selector) {
+            var matched = jQuery.map(this, fn, until);
+
+            if (name.slice(-5) !== "Until") {
+                selector = until;
+            }
+
+            if (selector && typeof selector === "string") {
+                matched = jQuery.filter(selector, matched);
+            }
+
+            if (this.length > 1) {
+
+                // Remove duplicates
+                if (!guaranteedUnique[name]) {
+                    jQuery.uniqueSort(matched);
+                }
+
+                // Reverse order for parents* and prev-derivatives
+                if (rparentsprev.test(name)) {
+                    matched.reverse();
+                }
+            }
+
+            return this.pushStack(matched);
+        };
+    });
+    var rnothtmlwhite = (/[^\x20\t\r\n\f]+/g);
+
+
+    // Convert String-formatted options into Object-formatted ones
+    function createOptions(options) {
+        var object = {};
+        jQuery.each(options.match(rnothtmlwhite) || [], function (_, flag) {
+            object[flag] = true;
+        });
+        return object;
+    }
+
+    /*
+     * Create a callback list using the following parameters:
+     *
+     *	options: an optional list of space-separated options that will change how
+     *			the callback list behaves or a more traditional option object
+     *
+     * By default a callback list will act like an event callback list and can be
+     * "fired" multiple times.
+     *
+     * Possible options:
+     *
+     *	once:			will ensure the callback list can only be fired once (like a Deferred)
+     *
+     *	memory:			will keep track of previous values and will call any callback added
+     *					after the list has been fired right away with the latest "memorized"
+     *					values (like a Deferred)
+     *
+     *	unique:			will ensure a callback can only be added once (no duplicate in the list)
+     *
+     *	stopOnFalse:	interrupt callings when a callback returns false
+     *
+     */
+    jQuery.Callbacks = function (options) {
+
+        // Convert options from String-formatted to Object-formatted if needed
+        // (we check in cache first)
+        options = typeof options === "string" ?
+            createOptions(options) :
+            jQuery.extend({}, options);
+
+        var // Flag to know if list is currently firing
+            firing,
+
+            // Last fire value for non-forgettable lists
+            memory,
+
+            // Flag to know if list was already fired
+            fired,
+
+            // Flag to prevent firing
+            locked,
+
+            // Actual callback list
+            list = [],
+
+            // Queue of execution data for repeatable lists
+            queue = [],
+
+            // Index of currently firing callback (modified by add/remove as needed)
+            firingIndex = -1,
+
+            // Fire callbacks
+            fire = function () {
+
+                // Enforce single-firing
+                locked = locked || options.once;
+
+                // Execute callbacks for all pending executions,
+                // respecting firingIndex overrides and runtime changes
+                fired = firing = true;
+                for (; queue.length; firingIndex = -1) {
+                    memory = queue.shift();
+                    while (++firingIndex < list.length) {
+
+                        // Run callback and check for early termination
+                        if (list[firingIndex].apply(memory[0], memory[1]) === false &&
+                            options.stopOnFalse) {
+
+                            // Jump to end and forget the data so .add doesn't re-fire
+                            firingIndex = list.length;
+                            memory = false;
+                        }
+                    }
+                }
+
+                // Forget the data if we're done with it
+                if (!options.memory) {
+                    memory = false;
+                }
+
+                firing = false;
+
+                // Clean up if we're done firing for good
+                if (locked) {
+
+                    // Keep an empty list if we have data for future add calls
+                    if (memory) {
+                        list = [];
+
+                        // Otherwise, this object is spent
+                    } else {
+                        list = "";
+                    }
+                }
+            },
+
+            // Actual Callbacks object
+            self = {
+
+                // Add a callback or a collection of callbacks to the list
+                add: function () {
+                    if (list) {
+
+                        // If we have memory from a past run, we should fire after adding
+                        if (memory && !firing) {
+                            firingIndex = list.length - 1;
+                            queue.push(memory);
+                        }
+
+                        (function add(args) {
+                            jQuery.each(args, function (_, arg) {
+                                if (isFunction(arg)) {
+                                    if (!options.unique || !self.has(arg)) {
+                                        list.push(arg);
+                                    }
+                                } else if (arg && arg.length && toType(arg) !== "string") {
+
+                                    // Inspect recursively
+                                    add(arg);
+                                }
+                            });
+                        })(arguments);
+
+                        if (memory && !firing) {
+                            fire();
+                        }
+                    }
+                    return this;
+                },
+
+                // Remove a callback from the list
+                remove: function () {
+                    jQuery.each(arguments, function (_, arg) {
+                        var index;
+                        while ((index = jQuery.inArray(arg, list, index)) > -1) {
+                            list.splice(index, 1);
+
+                            // Handle firing indexes
+                            if (index <= firingIndex) {
+                                firingIndex--;
+                            }
+                        }
+                    });
+                    return this;
+                },
+
+                // Check if a given callback is in the list.
+                // If no argument is given, return whether or not list has callbacks attached.
+                has: function (fn) {
+                    return fn ?
+                        jQuery.inArray(fn, list) > -1 :
+                        list.length > 0;
+                },
+
+                // Remove all callbacks from the list
+                empty: function () {
+                    if (list) {
+                        list = [];
+                    }
+                    return this;
+                },
+
+                // Disable .fire and .add
+                // Abort any current/pending executions
+                // Clear all callbacks and values
+                disable: function () {
+                    locked = queue = [];
+                    list = memory = "";
+                    return this;
+                },
+                disabled: function () {
+                    return !list;
+                },
+
+                // Disable .fire
+                // Also disable .add unless we have memory (since it would have no effect)
+                // Abort any pending executions
+                lock: function () {
+                    locked = queue = [];
+                    if (!memory && !firing) {
+                        list = memory = "";
+                    }
+                    return this;
+                },
+                locked: function () {
+                    return !!locked;
+                },
+
+                // Call all callbacks with the given context and arguments
+                fireWith: function (context, args) {
+                    if (!locked) {
+                        args = args || [];
+                        args = [context, args.slice ? args.slice() : args];
+                        queue.push(args);
+                        if (!firing) {
+                            fire();
+                        }
+                    }
+                    return this;
+                },
+
+                // Call all the callbacks with the given arguments
+                fire: function () {
+                    self.fireWith(this, arguments);
+                    return this;
+                },
+
+                // To know if the callbacks have already been called at least once
+                fired: function () {
+                    return !!fired;
+                }
+            };
+
+        return self;
+    };
+
+
+    function Identity(v) {
+        return v;
+    }
+
+    function Thrower(ex) {
+        throw ex;
+    }
+
+    function adoptValue(value, resolve, reject, noValue) {
+        var method;
+
+        try {
+
+            // Check for promise aspect first to privilege synchronous behavior
+            if (value && isFunction((method = value.promise))) {
+                method.call(value).done(resolve).fail(reject);
+
+                // Other thenables
+            } else if (value && isFunction((method = value.then))) {
+                method.call(value, resolve, reject);
+
+                // Other non-thenables
+            } else {
+
+                // Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer:
+                // * false: [ value ].slice( 0 ) => resolve( value )
+                // * true: [ value ].slice( 1 ) => resolve()
+                resolve.apply(undefined, [value].slice(noValue));
+            }
+
+            // For Promises/A+, convert exceptions into rejections
+            // Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in
+            // Deferred#then to conditionally suppress rejection.
+        } catch (value) {
+
+            // Support: Android 4.0 only
+            // Strict mode functions invoked without .call/.apply get global-object context
+            reject.apply(undefined, [value]);
+        }
+    }
+
+    jQuery.extend({
+
+        Deferred: function (func) {
+            var tuples = [
+
+                    // action, add listener, callbacks,
+                    // ... .then handlers, argument index, [final state]
+                    ["notify", "progress", jQuery.Callbacks("memory"),
+                        jQuery.Callbacks("memory"), 2],
+                    ["resolve", "done", jQuery.Callbacks("once memory"),
+                        jQuery.Callbacks("once memory"), 0, "resolved"],
+                    ["reject", "fail", jQuery.Callbacks("once memory"),
+                        jQuery.Callbacks("once memory"), 1, "rejected"]
+                ],
+                state = "pending",
+                promise = {
+                    state: function () {
+                        return state;
+                    },
+                    always: function () {
+                        deferred.done(arguments).fail(arguments);
+                        return this;
+                    },
+                    "catch": function (fn) {
+                        return promise.then(null, fn);
+                    },
+
+                    // Keep pipe for back-compat
+                    pipe: function ( /* fnDone, fnFail, fnProgress */) {
+                        var fns = arguments;
+
+                        return jQuery.Deferred(function (newDefer) {
+                            jQuery.each(tuples, function (i, tuple) {
+
+                                // Map tuples (progress, done, fail) to arguments (done, fail, progress)
+                                var fn = isFunction(fns[tuple[4]]) && fns[tuple[4]];
+
+                                // deferred.progress(function() { bind to newDefer or newDefer.notify })
+                                // deferred.done(function() { bind to newDefer or newDefer.resolve })
+                                // deferred.fail(function() { bind to newDefer or newDefer.reject })
+                                deferred[tuple[1]](function () {
+                                    var returned = fn && fn.apply(this, arguments);
+                                    if (returned && isFunction(returned.promise)) {
+                                        returned.promise()
+                                            .progress(newDefer.notify)
+                                            .done(newDefer.resolve)
+                                            .fail(newDefer.reject);
+                                    } else {
+                                        newDefer[tuple[0] + "With"](
+                                            this,
+                                            fn ? [returned] : arguments
+                                        );
+                                    }
+                                });
+                            });
+                            fns = null;
+                        }).promise();
+                    },
+                    then: function (onFulfilled, onRejected, onProgress) {
+                        var maxDepth = 0;
+
+                        function resolve(depth, deferred, handler, special) {
+                            return function () {
+                                var that = this,
+                                    args = arguments,
+                                    mightThrow = function () {
+                                        var returned, then;
+
+                                        // Support: Promises/A+ section 2.3.3.3.3
+                                        // https://promisesaplus.com/#point-59
+                                        // Ignore double-resolution attempts
+                                        if (depth < maxDepth) {
+                                            return;
+                                        }
+
+                                        returned = handler.apply(that, args);
+
+                                        // Support: Promises/A+ section 2.3.1
+                                        // https://promisesaplus.com/#point-48
+                                        if (returned === deferred.promise()) {
+                                            throw new TypeError("Thenable self-resolution");
+                                        }
+
+                                        // Support: Promises/A+ sections 2.3.3.1, 3.5
+                                        // https://promisesaplus.com/#point-54
+                                        // https://promisesaplus.com/#point-75
+                                        // Retrieve `then` only once
+                                        then = returned &&
+
+                                            // Support: Promises/A+ section 2.3.4
+                                            // https://promisesaplus.com/#point-64
+                                            // Only check objects and functions for thenability
+                                            (typeof returned === "object" ||
+                                                typeof returned === "function") &&
+                                            returned.then;
+
+                                        // Handle a returned thenable
+                                        if (isFunction(then)) {
+
+                                            // Special processors (notify) just wait for resolution
+                                            if (special) {
+                                                then.call(
+                                                    returned,
+                                                    resolve(maxDepth, deferred, Identity, special),
+                                                    resolve(maxDepth, deferred, Thrower, special)
+                                                );
+
+                                                // Normal processors (resolve) also hook into progress
+                                            } else {
+
+                                                // ...and disregard older resolution values
+                                                maxDepth++;
+
+                                                then.call(
+                                                    returned,
+                                                    resolve(maxDepth, deferred, Identity, special),
+                                                    resolve(maxDepth, deferred, Thrower, special),
+                                                    resolve(maxDepth, deferred, Identity,
+                                                        deferred.notifyWith)
+                                                );
+                                            }
+
+                                            // Handle all other returned values
+                                        } else {
+
+                                            // Only substitute handlers pass on context
+                                            // and multiple values (non-spec behavior)
+                                            if (handler !== Identity) {
+                                                that = undefined;
+                                                args = [returned];
+                                            }
+
+                                            // Process the value(s)
+                                            // Default process is resolve
+                                            (special || deferred.resolveWith)(that, args);
+                                        }
+                                    },
+
+                                    // Only normal processors (resolve) catch and reject exceptions
+                                    process = special ?
+                                        mightThrow :
+                                        function () {
+                                            try {
+                                                mightThrow();
+                                            } catch (e) {
+
+                                                if (jQuery.Deferred.exceptionHook) {
+                                                    jQuery.Deferred.exceptionHook(e,
+                                                        process.stackTrace);
+                                                }
+
+                                                // Support: Promises/A+ section 2.3.3.3.4.1
+                                                // https://promisesaplus.com/#point-61
+                                                // Ignore post-resolution exceptions
+                                                if (depth + 1 >= maxDepth) {
+
+                                                    // Only substitute handlers pass on context
+                                                    // and multiple values (non-spec behavior)
+                                                    if (handler !== Thrower) {
+                                                        that = undefined;
+                                                        args = [e];
+                                                    }
+
+                                                    deferred.rejectWith(that, args);
+                                                }
+                                            }
+                                        };
+
+                                // Support: Promises/A+ section 2.3.3.3.1
+                                // https://promisesaplus.com/#point-57
+                                // Re-resolve promises immediately to dodge false rejection from
+                                // subsequent errors
+                                if (depth) {
+                                    process();
+                                } else {
+
+                                    // Call an optional hook to record the stack, in case of exception
+                                    // since it's otherwise lost when execution goes async
+                                    if (jQuery.Deferred.getStackHook) {
+                                        process.stackTrace = jQuery.Deferred.getStackHook();
+                                    }
+                                    window.setTimeout(process);
+                                }
+                            };
+                        }
+
+                        return jQuery.Deferred(function (newDefer) {
+
+                            // progress_handlers.add( ... )
+                            tuples[0][3].add(
+                                resolve(
+                                    0,
+                                    newDefer,
+                                    isFunction(onProgress) ?
+                                        onProgress :
+                                        Identity,
+                                    newDefer.notifyWith
+                                )
+                            );
+
+                            // fulfilled_handlers.add( ... )
+                            tuples[1][3].add(
+                                resolve(
+                                    0,
+                                    newDefer,
+                                    isFunction(onFulfilled) ?
+                                        onFulfilled :
+                                        Identity
+                                )
+                            );
+
+                            // rejected_handlers.add( ... )
+                            tuples[2][3].add(
+                                resolve(
+                                    0,
+                                    newDefer,
+                                    isFunction(onRejected) ?
+                                        onRejected :
+                                        Thrower
+                                )
+                            );
+                        }).promise();
+                    },
+
+                    // Get a promise for this deferred
+                    // If obj is provided, the promise aspect is added to the object
+                    promise: function (obj) {
+                        return obj != null ? jQuery.extend(obj, promise) : promise;
+                    }
+                },
+                deferred = {};
+
+            // Add list-specific methods
+            jQuery.each(tuples, function (i, tuple) {
+                var list = tuple[2],
+                    stateString = tuple[5];
+
+                // promise.progress = list.add
+                // promise.done = list.add
+                // promise.fail = list.add
+                promise[tuple[1]] = list.add;
+
+                // Handle state
+                if (stateString) {
+                    list.add(
+                        function () {
+
+                            // state = "resolved" (i.e., fulfilled)
+                            // state = "rejected"
+                            state = stateString;
+                        },
+
+                        // rejected_callbacks.disable
+                        // fulfilled_callbacks.disable
+                        tuples[3 - i][2].disable,
+
+                        // rejected_handlers.disable
+                        // fulfilled_handlers.disable
+                        tuples[3 - i][3].disable,
+
+                        // progress_callbacks.lock
+                        tuples[0][2].lock,
+
+                        // progress_handlers.lock
+                        tuples[0][3].lock
+                    );
+                }
+
+                // progress_handlers.fire
+                // fulfilled_handlers.fire
+                // rejected_handlers.fire
+                list.add(tuple[3].fire);
+
+                // deferred.notify = function() { deferred.notifyWith(...) }
+                // deferred.resolve = function() { deferred.resolveWith(...) }
+                // deferred.reject = function() { deferred.rejectWith(...) }
+                deferred[tuple[0]] = function () {
+                    deferred[tuple[0] + "With"](this === deferred ? undefined : this, arguments);
+                    return this;
+                };
+
+                // deferred.notifyWith = list.fireWith
+                // deferred.resolveWith = list.fireWith
+                // deferred.rejectWith = list.fireWith
+                deferred[tuple[0] + "With"] = list.fireWith;
+            });
+
+            // Make the deferred a promise
+            promise.promise(deferred);
+
+            // Call given func if any
+            if (func) {
+                func.call(deferred, deferred);
+            }
+
+            // All done!
+            return deferred;
+        },
+
+        // Deferred helper
+        when: function (singleValue) {
+            var
+
+                // count of uncompleted subordinates
+                remaining = arguments.length,
+
+                // count of unprocessed arguments
+                i = remaining,
+
+                // subordinate fulfillment data
+                resolveContexts = Array(i),
+                resolveValues = slice.call(arguments),
+
+                // the master Deferred
+                master = jQuery.Deferred(),
+
+                // subordinate callback factory
+                updateFunc = function (i) {
+                    return function (value) {
+                        resolveContexts[i] = this;
+                        resolveValues[i] = arguments.length > 1 ? slice.call(arguments) : value;
+                        if (!(--remaining)) {
+                            master.resolveWith(resolveContexts, resolveValues);
+                        }
+                    };
+                };
+
+            // Single- and empty arguments are adopted like Promise.resolve
+            if (remaining <= 1) {
+                adoptValue(singleValue, master.done(updateFunc(i)).resolve, master.reject,
+                    !remaining);
+
+                // Use .then() to unwrap secondary thenables (cf. gh-3000)
+                if (master.state() === "pending" ||
+                    isFunction(resolveValues[i] && resolveValues[i].then)) {
+
+                    return master.then();
+                }
+            }
+
+            // Multiple arguments are aggregated like Promise.all array elements
+            while (i--) {
+                adoptValue(resolveValues[i], updateFunc(i), master.reject);
+            }
+
+            return master.promise();
+        }
+    });
+
+
+    // These usually indicate a programmer mistake during development,
+    // warn about them ASAP rather than swallowing them by default.
+    var rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;
+
+    jQuery.Deferred.exceptionHook = function (error, stack) {
+
+        // Support: IE 8 - 9 only
+        // Console exists when dev tools are open, which can happen at any time
+        if (window.console && window.console.warn && error && rerrorNames.test(error.name)) {
+            window.console.warn("jQuery.Deferred exception: " + error.message, error.stack, stack);
+        }
+    };
+
+
+    jQuery.readyException = function (error) {
+        window.setTimeout(function () {
+            throw error;
+        });
+    };
+
+
+    // The deferred used on DOM ready
+    var readyList = jQuery.Deferred();
+
+    jQuery.fn.ready = function (fn) {
+
+        readyList
+            .then(fn)
+
+            // Wrap jQuery.readyException in a function so that the lookup
+            // happens at the time of error handling instead of callback
+            // registration.
+            .catch(function (error) {
+                jQuery.readyException(error);
+            });
+
+        return this;
+    };
+
+    jQuery.extend({
+
+        // Is the DOM ready to be used? Set to true once it occurs.
+        isReady: false,
+
+        // A counter to track how many items to wait for before
+        // the ready event fires. See #6781
+        readyWait: 1,
+
+        // Handle when the DOM is ready
+        ready: function (wait) {
+
+            // Abort if there are pending holds or we're already ready
+            if (wait === true ? --jQuery.readyWait : jQuery.isReady) {
+                return;
+            }
+
+            // Remember that the DOM is ready
+            jQuery.isReady = true;
+
+            // If a normal DOM Ready event fired, decrement, and wait if need be
+            if (wait !== true && --jQuery.readyWait > 0) {
+                return;
+            }
+
+            // If there are functions bound, to execute
+            readyList.resolveWith(document$1, [jQuery]);
+        }
+    });
+
+    jQuery.ready.then = readyList.then;
+
+    // The ready event handler and self cleanup method
+    function completed() {
+        document$1.removeEventListener("DOMContentLoaded", completed);
+        window.removeEventListener("load", completed);
+        jQuery.ready();
+    }
+
+    // Catch cases where $(document).ready() is called
+    // after the browser event has already occurred.
+    // Support: IE <=9 - 10 only
+    // Older IE sometimes signals "interactive" too soon
+    if (document$1.readyState === "complete" ||
+        (document$1.readyState !== "loading" && !document$1.documentElement.doScroll)) {
+
+        // Handle it asynchronously to allow scripts the opportunity to delay ready
+        window.setTimeout(jQuery.ready);
+
+    } else {
+
+        // Use the handy event callback
+        document$1.addEventListener("DOMContentLoaded", completed);
+
+        // A fallback to window.onload, that will always work
+        window.addEventListener("load", completed);
+    }
+
+
+    // Multifunctional method to get and set values of a collection
+    // The value/s can optionally be executed if it's a function
+    var access = function (elems, fn, key, value, chainable, emptyGet, raw) {
+        var i = 0,
+            len = elems.length,
+            bulk = key == null;
+
+        // Sets many values
+        if (toType(key) === "object") {
+            chainable = true;
+            for (i in key) {
+                access(elems, fn, i, key[i], true, emptyGet, raw);
+            }
+
+            // Sets one value
+        } else if (value !== undefined) {
+            chainable = true;
+
+            if (!isFunction(value)) {
+                raw = true;
+            }
+
+            if (bulk) {
+
+                // Bulk operations run against the entire set
+                if (raw) {
+                    fn.call(elems, value);
+                    fn = null;
+
+                    // ...except when executing function values
+                } else {
+                    bulk = fn;
+                    fn = function (elem, key, value) {
+                        return bulk.call(jQuery(elem), value);
+                    };
+                }
+            }
+
+            if (fn) {
+                for (; i < len; i++) {
+                    fn(
+                        elems[i], key, raw ?
+                            value :
+                            value.call(elems[i], i, fn(elems[i], key))
+                    );
+                }
+            }
+        }
+
+        if (chainable) {
+            return elems;
+        }
+
+        // Gets
+        if (bulk) {
+            return fn.call(elems);
+        }
+
+        return len ? fn(elems[0], key) : emptyGet;
+    };
+
+
+    // Matches dashed string for camelizing
+    var rmsPrefix = /^-ms-/,
+        rdashAlpha = /-([a-z])/g;
+
+    // Used by camelCase as callback to replace()
+    function fcamelCase(all, letter) {
+        return letter.toUpperCase();
+    }
+
+    // Convert dashed to camelCase; used by the css and data modules
+    // Support: IE <=9 - 11, Edge 12 - 15
+    // Microsoft forgot to hump their vendor prefix (#9572)
+    function camelCase(string) {
+        return string.replace(rmsPrefix, "ms-").replace(rdashAlpha, fcamelCase);
+    }
+
+    var acceptData = function (owner) {
+
+        // Accepts only:
+        //  - Node
+        //    - Node.ELEMENT_NODE
+        //    - Node.DOCUMENT_NODE
+        //  - Object
+        //    - Any
+        return owner.nodeType === 1 || owner.nodeType === 9 || !(+owner.nodeType);
+    };
+
+
+    function Data() {
+        this.expando = jQuery.expando + Data.uid++;
+    }
+
+    Data.uid = 1;
+
+    Data.prototype = {
+
+        cache: function (owner) {
+
+            // Check if the owner object already has a cache
+            var value = owner[this.expando];
+
+            // If not, create one
+            if (!value) {
+                value = {};
+
+                // We can accept data for non-element nodes in modern browsers,
+                // but we should not, see #8335.
+                // Always return an empty object.
+                if (acceptData(owner)) {
+
+                    // If it is a node unlikely to be stringify-ed or looped over
+                    // use plain assignment
+                    if (owner.nodeType) {
+                        owner[this.expando] = value;
+
+                        // Otherwise secure it in a non-enumerable property
+                        // configurable must be true to allow the property to be
+                        // deleted when data is removed
+                    } else {
+                        Object.defineProperty(owner, this.expando, {
+                            value: value,
+                            configurable: true
+                        });
+                    }
+                }
+            }
+
+            return value;
+        },
+        set: function (owner, data, value) {
+            var prop,
+                cache = this.cache(owner);
+
+            // Handle: [ owner, key, value ] args
+            // Always use camelCase key (gh-2257)
+            if (typeof data === "string") {
+                cache[camelCase(data)] = value;
+
+                // Handle: [ owner, { properties } ] args
+            } else {
+
+                // Copy the properties one-by-one to the cache object
+                for (prop in data) {
+                    cache[camelCase(prop)] = data[prop];
+                }
+            }
+            return cache;
+        },
+        get: function (owner, key) {
+            return key === undefined ?
+                this.cache(owner) :
+
+                // Always use camelCase key (gh-2257)
+                owner[this.expando] && owner[this.expando][camelCase(key)];
+        },
+        access: function (owner, key, value) {
+
+            // In cases where either:
+            //
+            //   1. No key was specified
+            //   2. A string key was specified, but no value provided
+            //
+            // Take the "read" path and allow the get method to determine
+            // which value to return, respectively either:
+            //
+            //   1. The entire cache object
+            //   2. The data stored at the key
+            //
+            if (key === undefined ||
+                ((key && typeof key === "string") && value === undefined)) {
+
+                return this.get(owner, key);
+            }
+
+            // When the key is not a string, or both a key and value
+            // are specified, set or extend (existing objects) with either:
+            //
+            //   1. An object of properties
+            //   2. A key and value
+            //
+            this.set(owner, key, value);
+
+            // Since the "set" path can have two possible entry points
+            // return the expected data based on which path was taken[*]
+            return value !== undefined ? value : key;
+        },
+        remove: function (owner, key) {
+            var i,
+                cache = owner[this.expando];
+
+            if (cache === undefined) {
+                return;
+            }
+
+            if (key !== undefined) {
+
+                // Support array or space separated string of keys
+                if (Array.isArray(key)) {
+
+                    // If key is an array of keys...
+                    // We always set camelCase keys, so remove that.
+                    key = key.map(camelCase);
+                } else {
+                    key = camelCase(key);
+
+                    // If a key with the spaces exists, use it.
+                    // Otherwise, create an array by matching non-whitespace
+                    key = key in cache ?
+                        [key] :
+                        (key.match(rnothtmlwhite) || []);
+                }
+
+                i = key.length;
+
+                while (i--) {
+                    delete cache[key[i]];
+                }
+            }
+
+            // Remove the expando if there's no more data
+            if (key === undefined || jQuery.isEmptyObject(cache)) {
+
+                // Support: Chrome <=35 - 45
+                // Webkit & Blink performance suffers when deleting properties
+                // from DOM nodes, so set to undefined instead
+                // https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)
+                if (owner.nodeType) {
+                    owner[this.expando] = undefined;
+                } else {
+                    delete owner[this.expando];
+                }
+            }
+        },
+        hasData: function (owner) {
+            var cache = owner[this.expando];
+            return cache !== undefined && !jQuery.isEmptyObject(cache);
+        }
+    };
+    var dataPriv = new Data();
+
+    var dataUser = new Data();
+
+
+    //	Implementation Summary
+    //
+    //	1. Enforce API surface and semantic compatibility with 1.9.x branch
+    //	2. Improve the module's maintainability by reducing the storage
+    //		paths to a single mechanism.
+    //	3. Use the same single mechanism to support "private" and "user" data.
+    //	4. _Never_ expose "private" data to user code (TODO: Drop _data, _removeData)
+    //	5. Avoid exposing implementation details on user objects (eg. expando properties)
+    //	6. Provide a clear path for implementation upgrade to WeakMap in 2014
+
+    var rbrace = /^(?:\{[\w\W]*\}|\[[\w\W]*\])$/,
+        rmultiDash = /[A-Z]/g;
+
+    function getData(data) {
+        if (data === "true") {
+            return true;
+        }
+
+        if (data === "false") {
+            return false;
+        }
+
+        if (data === "null") {
+            return null;
+        }
+
+        // Only convert to a number if it doesn't change the string
+        if (data === +data + "") {
+            return +data;
+        }
+
+        if (rbrace.test(data)) {
+            return JSON.parse(data);
+        }
+
+        return data;
+    }
+
+    function dataAttr(elem, key, data) {
+        var name;
+
+        // If nothing was found internally, try to fetch any
+        // data from the HTML5 data-* attribute
+        if (data === undefined && elem.nodeType === 1) {
+            name = "data-" + key.replace(rmultiDash, "-$&").toLowerCase();
+            data = elem.getAttribute(name);
+
+            if (typeof data === "string") {
+                try {
+                    data = getData(data);
+                } catch (e) {
+                }
+
+                // Make sure we set the data so it isn't changed later
+                dataUser.set(elem, key, data);
+            } else {
+                data = undefined;
+            }
+        }
+        return data;
+    }
+
+    jQuery.extend({
+        hasData: function (elem) {
+            return dataUser.hasData(elem) || dataPriv.hasData(elem);
+        },
+
+        data: function (elem, name, data) {
+            return dataUser.access(elem, name, data);
+        },
+
+        removeData: function (elem, name) {
+            dataUser.remove(elem, name);
+        },
+
+        // TODO: Now that all calls to _data and _removeData have been replaced
+        // with direct calls to dataPriv methods, these can be deprecated.
+        _data: function (elem, name, data) {
+            return dataPriv.access(elem, name, data);
+        },
+
+        _removeData: function (elem, name) {
+            dataPriv.remove(elem, name);
+        }
+    });
+
+    jQuery.fn.extend({
+        data: function (key, value) {
+            var i, name, data,
+                elem = this[0],
+                attrs = elem && elem.attributes;
+
+            // Gets all values
+            if (key === undefined) {
+                if (this.length) {
+                    data = dataUser.get(elem);
+
+                    if (elem.nodeType === 1 && !dataPriv.get(elem, "hasDataAttrs")) {
+                        i = attrs.length;
+                        while (i--) {
+
+                            // Support: IE 11 only
+                            // The attrs elements can be null (#14894)
+                            if (attrs[i]) {
+                                name = attrs[i].name;
+                                if (name.indexOf("data-") === 0) {
+                                    name = camelCase(name.slice(5));
+                                    dataAttr(elem, name, data[name]);
+                                }
+                            }
+                        }
+                        dataPriv.set(elem, "hasDataAttrs", true);
+                    }
+                }
+
+                return data;
+            }
+
+            // Sets multiple values
+            if (typeof key === "object") {
+                return this.each(function () {
+                    dataUser.set(this, key);
+                });
+            }
+
+            return access(this, function (value) {
+                var data;
+
+                // The calling jQuery object (element matches) is not empty
+                // (and therefore has an element appears at this[ 0 ]) and the
+                // `value` parameter was not undefined. An empty jQuery object
+                // will result in `undefined` for elem = this[ 0 ] which will
+                // throw an exception if an attempt to read a data cache is made.
+                if (elem && value === undefined) {
+
+                    // Attempt to get data from the cache
+                    // The key will always be camelCased in Data
+                    data = dataUser.get(elem, key);
+                    if (data !== undefined) {
+                        return data;
+                    }
+
+                    // Attempt to "discover" the data in
+                    // HTML5 custom data-* attrs
+                    data = dataAttr(elem, key);
+                    if (data !== undefined) {
+                        return data;
+                    }
+
+                    // We tried really hard, but the data doesn't exist.
+                    return;
+                }
+
+                // Set the data...
+                this.each(function () {
+
+                    // We always store the camelCased key
+                    dataUser.set(this, key, value);
+                });
+            }, null, value, arguments.length > 1, null, true);
+        },
+
+        removeData: function (key) {
+            return this.each(function () {
+                dataUser.remove(this, key);
+            });
+        }
+    });
+
+
+    jQuery.extend({
+        queue: function (elem, type, data) {
+            var queue;
+
+            if (elem) {
+                type = (type || "fx") + "queue";
+                queue = dataPriv.get(elem, type);
+
+                // Speed up dequeue by getting out quickly if this is just a lookup
+                if (data) {
+                    if (!queue || Array.isArray(data)) {
+                        queue = dataPriv.access(elem, type, jQuery.makeArray(data));
+                    } else {
+                        queue.push(data);
+                    }
+                }
+                return queue || [];
+            }
+        },
+
+        dequeue: function (elem, type) {
+            type = type || "fx";
+
+            var queue = jQuery.queue(elem, type),
+                startLength = queue.length,
+                fn = queue.shift(),
+                hooks = jQuery._queueHooks(elem, type),
+                next = function () {
+                    jQuery.dequeue(elem, type);
+                };
+
+            // If the fx queue is dequeued, always remove the progress sentinel
+            if (fn === "inprogress") {
+                fn = queue.shift();
+                startLength--;
+            }
+
+            if (fn) {
+
+                // Add a progress sentinel to prevent the fx queue from being
+                // automatically dequeued
+                if (type === "fx") {
+                    queue.unshift("inprogress");
+                }
+
+                // Clear up the last queue stop function
+                delete hooks.stop;
+                fn.call(elem, next, hooks);
+            }
+
+            if (!startLength && hooks) {
+                hooks.empty.fire();
+            }
+        },
+
+        // Not public - generate a queueHooks object, or return the current one
+        _queueHooks: function (elem, type) {
+            var key = type + "queueHooks";
+            return dataPriv.get(elem, key) || dataPriv.access(elem, key, {
+                empty: jQuery.Callbacks("once memory").add(function () {
+                    dataPriv.remove(elem, [type + "queue", key]);
+                })
+            });
+        }
+    });
+
+    jQuery.fn.extend({
+        queue: function (type, data) {
+            var setter = 2;
+
+            if (typeof type !== "string") {
+                data = type;
+                type = "fx";
+                setter--;
+            }
+
+            if (arguments.length < setter) {
+                return jQuery.queue(this[0], type);
+            }
+
+            return data === undefined ?
+                this :
+                this.each(function () {
+                    var queue = jQuery.queue(this, type, data);
+
+                    // Ensure a hooks for this queue
+                    jQuery._queueHooks(this, type);
+
+                    if (type === "fx" && queue[0] !== "inprogress") {
+                        jQuery.dequeue(this, type);
+                    }
+                });
+        },
+        dequeue: function (type) {
+            return this.each(function () {
+                jQuery.dequeue(this, type);
+            });
+        },
+        clearQueue: function (type) {
+            return this.queue(type || "fx", []);
+        },
+
+        // Get a promise resolved when queues of a certain type
+        // are emptied (fx is the type by default)
+        promise: function (type, obj) {
+            var tmp,
+                count = 1,
+                defer = jQuery.Deferred(),
+                elements = this,
+                i = this.length,
+                resolve = function () {
+                    if (!(--count)) {
+                        defer.resolveWith(elements, [elements]);
+                    }
+                };
+
+            if (typeof type !== "string") {
+                obj = type;
+                type = undefined;
+            }
+            type = type || "fx";
+
+            while (i--) {
+                tmp = dataPriv.get(elements[i], type + "queueHooks");
+                if (tmp && tmp.empty) {
+                    count++;
+                    tmp.empty.add(resolve);
+                }
+            }
+            resolve();
+            return defer.promise(obj);
+        }
+    });
+    var pnum = (/[+-]?(?:\d*\.|)\d+(?:[eE][+-]?\d+|)/).source;
+
+    var rcssNum = new RegExp("^(?:([+-])=|)(" + pnum + ")([a-z%]*)$", "i");
+
+
+    var cssExpand = ["Top", "Right", "Bottom", "Left"];
+
+    var isHiddenWithinTree = function (elem, el) {
+
+        // isHiddenWithinTree might be called from jQuery#filter function;
+        // in that case, element will be second argument
+        elem = el || elem;
+
+        // Inline style trumps all
+        return elem.style.display === "none" ||
+            elem.style.display === "" &&
+
+            // Otherwise, check computed style
+            // Support: Firefox <=43 - 45
+            // Disconnected elements can have computed display: none, so first confirm that elem is
+            // in the document.
+            jQuery.contains(elem.ownerDocument, elem) &&
+
+            jQuery.css(elem, "display") === "none";
+    };
+
+    var swap = function (elem, options, callback, args) {
+        var ret, name,
+            old = {};
+
+        // Remember the old values, and insert the new ones
+        for (name in options) {
+            old[name] = elem.style[name];
+            elem.style[name] = options[name];
+        }
+
+        ret = callback.apply(elem, args || []);
+
+        // Revert the old values
+        for (name in options) {
+            elem.style[name] = old[name];
+        }
+
+        return ret;
+    };
+
+
+    function adjustCSS(elem, prop, valueParts, tween) {
+        var adjusted, scale,
+            maxIterations = 20,
+            currentValue = tween ?
+                function () {
+                    return tween.cur();
+                } :
+                function () {
+                    return jQuery.css(elem, prop, "");
+                },
+            initial = currentValue(),
+            unit = valueParts && valueParts[3] || (jQuery.cssNumber[prop] ? "" : "px"),
+
+            // Starting value computation is required for potential unit mismatches
+            initialInUnit = (jQuery.cssNumber[prop] || unit !== "px" && +initial) &&
+                rcssNum.exec(jQuery.css(elem, prop));
+
+        if (initialInUnit && initialInUnit[3] !== unit) {
+
+            // Support: Firefox <=54
+            // Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144)
+            initial = initial / 2;
+
+            // Trust units reported by jQuery.css
+            unit = unit || initialInUnit[3];
+
+            // Iteratively approximate from a nonzero starting point
+            initialInUnit = +initial || 1;
+
+            while (maxIterations--) {
+
+                // Evaluate and update our best guess (doubling guesses that zero out).
+                // Finish if the scale equals or crosses 1 (making the old*new product non-positive).
+                jQuery.style(elem, prop, initialInUnit + unit);
+                if ((1 - scale) * (1 - (scale = currentValue() / initial || 0.5)) <= 0) {
+                    maxIterations = 0;
+                }
+                initialInUnit = initialInUnit / scale;
+
+            }
+
+            initialInUnit = initialInUnit * 2;
+            jQuery.style(elem, prop, initialInUnit + unit);
+
+            // Make sure we update the tween properties later on
+            valueParts = valueParts || [];
+        }
+
+        if (valueParts) {
+            initialInUnit = +initialInUnit || +initial || 0;
+
+            // Apply relative offset (+=/-=) if specified
+            adjusted = valueParts[1] ?
+                initialInUnit + (valueParts[1] + 1) * valueParts[2] :
+                +valueParts[2];
+            if (tween) {
+                tween.unit = unit;
+                tween.start = initialInUnit;
+                tween.end = adjusted;
+            }
+        }
+        return adjusted;
+    }
+
+
+    var defaultDisplayMap = {};
+
+    function getDefaultDisplay(elem) {
+        var temp,
+            doc = elem.ownerDocument,
+            nodeName = elem.nodeName,
+            display = defaultDisplayMap[nodeName];
+
+        if (display) {
+            return display;
+        }
+
+        temp = doc.body.appendChild(doc.createElement(nodeName));
+        display = jQuery.css(temp, "display");
+
+        temp.parentNode.removeChild(temp);
+
+        if (display === "none") {
+            display = "block";
+        }
+        defaultDisplayMap[nodeName] = display;
+
+        return display;
+    }
+
+    function showHide(elements, show) {
+        var display, elem,
+            values = [],
+            index = 0,
+            length = elements.length;
+
+        // Determine new display value for elements that need to change
+        for (; index < length; index++) {
+            elem = elements[index];
+            if (!elem.style) {
+                continue;
+            }
+
+            display = elem.style.display;
+            if (show) {
+
+                // Since we force visibility upon cascade-hidden elements, an immediate (and slow)
+                // check is required in this first loop unless we have a nonempty display value (either
+                // inline or about-to-be-restored)
+                if (display === "none") {
+                    values[index] = dataPriv.get(elem, "display") || null;
+                    if (!values[index]) {
+                        elem.style.display = "";
+                    }
+                }
+                if (elem.style.display === "" && isHiddenWithinTree(elem)) {
+                    values[index] = getDefaultDisplay(elem);
+                }
+            } else {
+                if (display !== "none") {
+                    values[index] = "none";
+
+                    // Remember what we're overwriting
+                    dataPriv.set(elem, "display", display);
+                }
+            }
+        }
+
+        // Set the display of the elements in a second loop to avoid constant reflow
+        for (index = 0; index < length; index++) {
+            if (values[index] != null) {
+                elements[index].style.display = values[index];
+            }
+        }
+
+        return elements;
+    }
+
+    jQuery.fn.extend({
+        show: function () {
+            return showHide(this, true);
+        },
+        hide: function () {
+            return showHide(this);
+        },
+        toggle: function (state) {
+            if (typeof state === "boolean") {
+                return state ? this.show() : this.hide();
+            }
+
+            return this.each(function () {
+                if (isHiddenWithinTree(this)) {
+                    jQuery(this).show();
+                } else {
+                    jQuery(this).hide();
+                }
+            });
+        }
+    });
+    var rcheckableType = (/^(?:checkbox|radio)$/i);
+
+    var rtagName = (/<([a-z][^\/\0>\x20\t\r\n\f]+)/i);
+
+    var rscriptType = (/^$|^module$|\/(?:java|ecma)script/i);
+
+
+    // We have to close these tags to support XHTML (#13200)
+    var wrapMap = {
+
+        // Support: IE <=9 only
+        option: [1, "<select multiple='multiple'>", "</select>"],
+
+        // XHTML parsers do not magically insert elements in the
+        // same way that tag soup parsers do. So we cannot shorten
+        // this by omitting <tbody> or other required elements.
+        thead: [1, "<table>", "</table>"],
+        col: [2, "<table><colgroup>", "</colgroup></table>"],
+        tr: [2, "<table><tbody>", "</tbody></table>"],
+        td: [3, "<table><tbody><tr>", "</tr></tbody></table>"],
+
+        _default: [0, "", ""]
+    };
+
+    // Support: IE <=9 only
+    wrapMap.optgroup = wrapMap.option;
+
+    wrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;
+    wrapMap.th = wrapMap.td;
+
+
+    function getAll(context, tag) {
+
+        // Support: IE <=9 - 11 only
+        // Use typeof to avoid zero-argument method invocation on host objects (#15151)
+        var ret;
+
+        if (typeof context.getElementsByTagName !== "undefined") {
+            ret = context.getElementsByTagName(tag || "*");
+
+        } else if (typeof context.querySelectorAll !== "undefined") {
+            ret = context.querySelectorAll(tag || "*");
+
+        } else {
+            ret = [];
+        }
+
+        if (tag === undefined || tag && nodeName(context, tag)) {
+            return jQuery.merge([context], ret);
+        }
+
+        return ret;
+    }
+
+
+    // Mark scripts as having already been evaluated
+    function setGlobalEval(elems, refElements) {
+        var i = 0,
+            l = elems.length;
+
+        for (; i < l; i++) {
+            dataPriv.set(
+                elems[i],
+                "globalEval",
+                !refElements || dataPriv.get(refElements[i], "globalEval")
+            );
+        }
+    }
+
+
+    var rhtml = /<|&#?\w+;/;
+
+    function buildFragment(elems, context, scripts, selection, ignored) {
+        var elem, tmp, tag, wrap, contains, j,
+            fragment = context.createDocumentFragment(),
+            nodes = [],
+            i = 0,
+            l = elems.length;
+
+        for (; i < l; i++) {
+            elem = elems[i];
+
+            if (elem || elem === 0) {
+
+                // Add nodes directly
+                if (toType(elem) === "object") {
+
+                    // Support: Android <=4.0 only, PhantomJS 1 only
+                    // push.apply(_, arraylike) throws on ancient WebKit
+                    jQuery.merge(nodes, elem.nodeType ? [elem] : elem);
+
+                    // Convert non-html into a text node
+                } else if (!rhtml.test(elem)) {
+                    nodes.push(context.createTextNode(elem));
+
+                    // Convert html into DOM nodes
+                } else {
+                    tmp = tmp || fragment.appendChild(context.createElement("div"));
+
+                    // Deserialize a standard representation
+                    tag = (rtagName.exec(elem) || ["", ""])[1].toLowerCase();
+                    wrap = wrapMap[tag] || wrapMap._default;
+                    tmp.innerHTML = wrap[1] + jQuery.htmlPrefilter(elem) + wrap[2];
+
+                    // Descend through wrappers to the right content
+                    j = wrap[0];
+                    while (j--) {
+                        tmp = tmp.lastChild;
+                    }
+
+                    // Support: Android <=4.0 only, PhantomJS 1 only
+                    // push.apply(_, arraylike) throws on ancient WebKit
+                    jQuery.merge(nodes, tmp.childNodes);
+
+                    // Remember the top-level container
+                    tmp = fragment.firstChild;
+
+                    // Ensure the created nodes are orphaned (#12392)
+                    tmp.textContent = "";
+                }
+            }
+        }
+
+        // Remove wrapper from fragment
+        fragment.textContent = "";
+
+        i = 0;
+        while ((elem = nodes[i++])) {
+
+            // Skip elements already in the context collection (trac-4087)
+            if (selection && jQuery.inArray(elem, selection) > -1) {
+                if (ignored) {
+                    ignored.push(elem);
+                }
+                continue;
+            }
+
+            contains = jQuery.contains(elem.ownerDocument, elem);
+
+            // Append to fragment
+            tmp = getAll(fragment.appendChild(elem), "script");
+
+            // Preserve script evaluation history
+            if (contains) {
+                setGlobalEval(tmp);
+            }
+
+            // Capture executables
+            if (scripts) {
+                j = 0;
+                while ((elem = tmp[j++])) {
+                    if (rscriptType.test(elem.type || "")) {
+                        scripts.push(elem);
+                    }
+                }
+            }
+        }
+
+        return fragment;
+    }
+
+
+    (function () {
+        var fragment = document$1.createDocumentFragment(),
+            div = fragment.appendChild(document$1.createElement("div")),
+            input = document$1.createElement("input");
+
+        // Support: Android 4.0 - 4.3 only
+        // Check state lost if the name is set (#11217)
+        // Support: Windows Web Apps (WWA)
+        // `name` and `type` must use .setAttribute for WWA (#14901)
+        input.setAttribute("type", "radio");
+        input.setAttribute("checked", "checked");
+        input.setAttribute("name", "t");
+
+        div.appendChild(input);
+
+        // Support: Android <=4.1 only
+        // Older WebKit doesn't clone checked state correctly in fragments
+        support.checkClone = div.cloneNode(true).cloneNode(true).lastChild.checked;
+
+        // Support: IE <=11 only
+        // Make sure textarea (and checkbox) defaultValue is properly cloned
+        div.innerHTML = "<textarea>x</textarea>";
+        support.noCloneChecked = !!div.cloneNode(true).lastChild.defaultValue;
+    })();
+    var documentElement = document$1.documentElement;
+
+
+    var
+        rkeyEvent = /^key/,
+        rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/,
+        rtypenamespace = /^([^.]*)(?:\.(.+)|)/;
+
+    function returnTrue() {
+        return true;
+    }
+
+    function returnFalse() {
+        return false;
+    }
+
+    // Support: IE <=9 only
+    // See #13393 for more info
+    function safeActiveElement() {
+        try {
+            return document$1.activeElement;
+        } catch (err) {
+        }
+    }
+
+    function on(elem, types, selector, data, fn, one) {
+        var origFn, type;
+
+        // Types can be a map of types/handlers
+        if (typeof types === "object") {
+
+            // ( types-Object, selector, data )
+            if (typeof selector !== "string") {
+
+                // ( types-Object, data )
+                data = data || selector;
+                selector = undefined;
+            }
+            for (type in types) {
+                on(elem, type, selector, data, types[type], one);
+            }
+            return elem;
+        }
+
+        if (data == null && fn == null) {
+
+            // ( types, fn )
+            fn = selector;
+            data = selector = undefined;
+        } else if (fn == null) {
+            if (typeof selector === "string") {
+
+                // ( types, selector, fn )
+                fn = data;
+                data = undefined;
+            } else {
+
+                // ( types, data, fn )
+                fn = data;
+                data = selector;
+                selector = undefined;
+            }
+        }
+        if (fn === false) {
+            fn = returnFalse;
+        } else if (!fn) {
+            return elem;
+        }
+
+        if (one === 1) {
+            origFn = fn;
+            fn = function (event) {
+
+                // Can use an empty set, since event contains the info
+                jQuery().off(event);
+                return origFn.apply(this, arguments);
+            };
+
+            // Use same guid so caller can remove using origFn
+            fn.guid = origFn.guid || (origFn.guid = jQuery.guid++);
+        }
+        return elem.each(function () {
+            jQuery.event.add(this, types, fn, data, selector);
+        });
+    }
+
+    /*
+     * Helper functions for managing events -- not part of the public interface.
+     * Props to Dean Edwards' addEvent library for many of the ideas.
+     */
+    jQuery.event = {
+
+        global: {},
+
+        add: function (elem, types, handler, data, selector) {
+
+            var handleObjIn, eventHandle, tmp,
+                events, t, handleObj,
+                special, handlers, type, namespaces, origType,
+                elemData = dataPriv.get(elem);
+
+            // Don't attach events to noData or text/comment nodes (but allow plain objects)
+            if (!elemData) {
+                return;
+            }
+
+            // Caller can pass in an object of custom data in lieu of the handler
+            if (handler.handler) {
+                handleObjIn = handler;
+                handler = handleObjIn.handler;
+                selector = handleObjIn.selector;
+            }
+
+            // Ensure that invalid selectors throw exceptions at attach time
+            // Evaluate against documentElement in case elem is a non-element node (e.g., document)
+            if (selector) {
+                jQuery.find.matchesSelector(documentElement, selector);
+            }
+
+            // Make sure that the handler has a unique ID, used to find/remove it later
+            if (!handler.guid) {
+                handler.guid = jQuery.guid++;
+            }
+
+            // Init the element's event structure and main handler, if this is the first
+            if (!(events = elemData.events)) {
+                events = elemData.events = {};
+            }
+            if (!(eventHandle = elemData.handle)) {
+                eventHandle = elemData.handle = function (e) {
+
+                    // Discard the second event of a jQuery.event.trigger() and
+                    // when an event is called after a page has unloaded
+                    return typeof jQuery !== "undefined" && jQuery.event.triggered !== e.type ?
+                        jQuery.event.dispatch.apply(elem, arguments) : undefined;
+                };
+            }
+
+            // Handle multiple events separated by a space
+            types = (types || "").match(rnothtmlwhite) || [""];
+            t = types.length;
+            while (t--) {
+                tmp = rtypenamespace.exec(types[t]) || [];
+                type = origType = tmp[1];
+                namespaces = (tmp[2] || "").split(".").sort();
+
+                // There *must* be a type, no attaching namespace-only handlers
+                if (!type) {
+                    continue;
+                }
+
+                // If event changes its type, use the special event handlers for the changed type
+                special = jQuery.event.special[type] || {};
+
+                // If selector defined, determine special event api type, otherwise given type
+                type = (selector ? special.delegateType : special.bindType) || type;
+
+                // Update special based on newly reset type
+                special = jQuery.event.special[type] || {};
+
+                // handleObj is passed to all event handlers
+                handleObj = jQuery.extend({
+                    type: type,
+                    origType: origType,
+                    data: data,
+                    handler: handler,
+                    guid: handler.guid,
+                    selector: selector,
+                    needsContext: selector && jQuery.expr.match.needsContext.test(selector),
+                    namespace: namespaces.join(".")
+                }, handleObjIn);
+
+                // Init the event handler queue if we're the first
+                if (!(handlers = events[type])) {
+                    handlers = events[type] = [];
+                    handlers.delegateCount = 0;
+
+                    // Only use addEventListener if the special events handler returns false
+                    if (!special.setup ||
+                        special.setup.call(elem, data, namespaces, eventHandle) === false) {
+
+                        if (elem.addEventListener) {
+                            elem.addEventListener(type, eventHandle);
+                        }
+                    }
+                }
+
+                if (special.add) {
+                    special.add.call(elem, handleObj);
+
+                    if (!handleObj.handler.guid) {
+                        handleObj.handler.guid = handler.guid;
+                    }
+                }
+
+                // Add to the element's handler list, delegates in front
+                if (selector) {
+                    handlers.splice(handlers.delegateCount++, 0, handleObj);
+                } else {
+                    handlers.push(handleObj);
+                }
+
+                // Keep track of which events have ever been used, for event optimization
+                jQuery.event.global[type] = true;
+            }
+
+        },
+
+        // Detach an event or set of events from an element
+        remove: function (elem, types, handler, selector, mappedTypes) {
+
+            var j, origCount, tmp,
+                events, t, handleObj,
+                special, handlers, type, namespaces, origType,
+                elemData = dataPriv.hasData(elem) && dataPriv.get(elem);
+
+            if (!elemData || !(events = elemData.events)) {
+                return;
+            }
+
+            // Once for each type.namespace in types; type may be omitted
+            types = (types || "").match(rnothtmlwhite) || [""];
+            t = types.length;
+            while (t--) {
+                tmp = rtypenamespace.exec(types[t]) || [];
+                type = origType = tmp[1];
+                namespaces = (tmp[2] || "").split(".").sort();
+
+                // Unbind all events (on this namespace, if provided) for the element
+                if (!type) {
+                    for (type in events) {
+                        jQuery.event.remove(elem, type + types[t], handler, selector, true);
+                    }
+                    continue;
+                }
+
+                special = jQuery.event.special[type] || {};
+                type = (selector ? special.delegateType : special.bindType) || type;
+                handlers = events[type] || [];
+                tmp = tmp[2] &&
+                    new RegExp("(^|\\.)" + namespaces.join("\\.(?:.*\\.|)") + "(\\.|$)");
+
+                // Remove matching events
+                origCount = j = handlers.length;
+                while (j--) {
+                    handleObj = handlers[j];
+
+                    if ((mappedTypes || origType === handleObj.origType) &&
+                        (!handler || handler.guid === handleObj.guid) &&
+                        (!tmp || tmp.test(handleObj.namespace)) &&
+                        (!selector || selector === handleObj.selector ||
+                            selector === "**" && handleObj.selector)) {
+                        handlers.splice(j, 1);
+
+                        if (handleObj.selector) {
+                            handlers.delegateCount--;
+                        }
+                        if (special.remove) {
+                            special.remove.call(elem, handleObj);
+                        }
+                    }
+                }
+
+                // Remove generic event handler if we removed something and no more handlers exist
+                // (avoids potential for endless recursion during removal of special event handlers)
+                if (origCount && !handlers.length) {
+                    if (!special.teardown ||
+                        special.teardown.call(elem, namespaces, elemData.handle) === false) {
+
+                        jQuery.removeEvent(elem, type, elemData.handle);
+                    }
+
+                    delete events[type];
+                }
+            }
+
+            // Remove data and the expando if it's no longer used
+            if (jQuery.isEmptyObject(events)) {
+                dataPriv.remove(elem, "handle events");
+            }
+        },
+
+        dispatch: function (nativeEvent) {
+
+            // Make a writable jQuery.Event from the native event object
+            var event = jQuery.event.fix(nativeEvent);
+
+            var i, j, ret, matched, handleObj, handlerQueue,
+                args = new Array(arguments.length),
+                handlers = (dataPriv.get(this, "events") || {})[event.type] || [],
+                special = jQuery.event.special[event.type] || {};
+
+            // Use the fix-ed jQuery.Event rather than the (read-only) native event
+            args[0] = event;
+
+            for (i = 1; i < arguments.length; i++) {
+                args[i] = arguments[i];
+            }
+
+            event.delegateTarget = this;
+
+            // Call the preDispatch hook for the mapped type, and let it bail if desired
+            if (special.preDispatch && special.preDispatch.call(this, event) === false) {
+                return;
+            }
+
+            // Determine handlers
+            handlerQueue = jQuery.event.handlers.call(this, event, handlers);
+
+            // Run delegates first; they may want to stop propagation beneath us
+            i = 0;
+            while ((matched = handlerQueue[i++]) && !event.isPropagationStopped()) {
+                event.currentTarget = matched.elem;
+
+                j = 0;
+                while ((handleObj = matched.handlers[j++]) &&
+                !event.isImmediatePropagationStopped()) {
+
+                    // Triggered event must either 1) have no namespace, or 2) have namespace(s)
+                    // a subset or equal to those in the bound event (both can have no namespace).
+                    if (!event.rnamespace || event.rnamespace.test(handleObj.namespace)) {
+
+                        event.handleObj = handleObj;
+                        event.data = handleObj.data;
+
+                        ret = ((jQuery.event.special[handleObj.origType] || {}).handle ||
+                            handleObj.handler).apply(matched.elem, args);
+
+                        if (ret !== undefined) {
+                            if ((event.result = ret) === false) {
+                                event.preventDefault();
+                                event.stopPropagation();
+                            }
+                        }
+                    }
+                }
+            }
+
+            // Call the postDispatch hook for the mapped type
+            if (special.postDispatch) {
+                special.postDispatch.call(this, event);
+            }
+
+            return event.result;
+        },
+
+        handlers: function (event, handlers) {
+            var i, handleObj, sel, matchedHandlers, matchedSelectors,
+                handlerQueue = [],
+                delegateCount = handlers.delegateCount,
+                cur = event.target;
+
+            // Find delegate handlers
+            if (delegateCount &&
+
+                // Support: IE <=9
+                // Black-hole SVG <use> instance trees (trac-13180)
+                cur.nodeType &&
+
+                // Support: Firefox <=42
+                // Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861)
+                // https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click
+                // Support: IE 11 only
+                // ...but not arrow key "clicks" of radio inputs, which can have `button` -1 (gh-2343)
+                !(event.type === "click" && event.button >= 1)) {
+
+                for (; cur !== this; cur = cur.parentNode || this) {
+
+                    // Don't check non-elements (#13208)
+                    // Don't process clicks on disabled elements (#6911, #8165, #11382, #11764)
+                    if (cur.nodeType === 1 && !(event.type === "click" && cur.disabled === true)) {
+                        matchedHandlers = [];
+                        matchedSelectors = {};
+                        for (i = 0; i < delegateCount; i++) {
+                            handleObj = handlers[i];
+
+                            // Don't conflict with Object.prototype properties (#13203)
+                            sel = handleObj.selector + " ";
+
+                            if (matchedSelectors[sel] === undefined) {
+                                matchedSelectors[sel] = handleObj.needsContext ?
+                                    jQuery(sel, this).index(cur) > -1 :
+                                    jQuery.find(sel, this, null, [cur]).length;
+                            }
+                            if (matchedSelectors[sel]) {
+                                matchedHandlers.push(handleObj);
+                            }
+                        }
+                        if (matchedHandlers.length) {
+                            handlerQueue.push({elem: cur, handlers: matchedHandlers});
+                        }
+                    }
+                }
+            }
+
+            // Add the remaining (directly-bound) handlers
+            cur = this;
+            if (delegateCount < handlers.length) {
+                handlerQueue.push({elem: cur, handlers: handlers.slice(delegateCount)});
+            }
+
+            return handlerQueue;
+        },
+
+        addProp: function (name, hook) {
+            Object.defineProperty(jQuery.Event.prototype, name, {
+                enumerable: true,
+                configurable: true,
+
+                get: isFunction(hook) ?
+                    function () {
+                        if (this.originalEvent) {
+                            return hook(this.originalEvent);
+                        }
+                    } :
+                    function () {
+                        if (this.originalEvent) {
+                            return this.originalEvent[name];
+                        }
+                    },
+
+                set: function (value) {
+                    Object.defineProperty(this, name, {
+                        enumerable: true,
+                        configurable: true,
+                        writable: true,
+                        value: value
+                    });
+                }
+            });
+        },
+
+        fix: function (originalEvent) {
+            return originalEvent[jQuery.expando] ?
+                originalEvent :
+                new jQuery.Event(originalEvent);
+        },
+
+        special: {
+            load: {
+
+                // Prevent triggered image.load events from bubbling to window.load
+                noBubble: true
+            },
+            focus: {
+
+                // Fire native event if possible so blur/focus sequence is correct
+                trigger: function () {
+                    if (this !== safeActiveElement() && this.focus) {
+                        this.focus();
+                        return false;
+                    }
+                },
+                delegateType: "focusin"
+            },
+            blur: {
+                trigger: function () {
+                    if (this === safeActiveElement() && this.blur) {
+                        this.blur();
+                        return false;
+                    }
+                },
+                delegateType: "focusout"
+            },
+            click: {
+
+                // For checkbox, fire native event so checked state will be right
+                trigger: function () {
+                    if (this.type === "checkbox" && this.click && nodeName(this, "input")) {
+                        this.click();
+                        return false;
+                    }
+                },
+
+                // For cross-browser consistency, don't fire native .click() on links
+                _default: function (event) {
+                    return nodeName(event.target, "a");
+                }
+            },
+
+            beforeunload: {
+                postDispatch: function (event) {
+
+                    // Support: Firefox 20+
+                    // Firefox doesn't alert if the returnValue field is not set.
+                    if (event.result !== undefined && event.originalEvent) {
+                        event.originalEvent.returnValue = event.result;
+                    }
+                }
+            }
+        }
+    };
+
+    jQuery.removeEvent = function (elem, type, handle) {
+
+        // This "if" is needed for plain objects
+        if (elem.removeEventListener) {
+            elem.removeEventListener(type, handle);
+        }
+    };
+
+    jQuery.Event = function (src, props) {
+
+        // Allow instantiation without the 'new' keyword
+        if (!(this instanceof jQuery.Event)) {
+            return new jQuery.Event(src, props);
+        }
+
+        // Event object
+        if (src && src.type) {
+            this.originalEvent = src;
+            this.type = src.type;
+
+            // Events bubbling up the document may have been marked as prevented
+            // by a handler lower down the tree; reflect the correct value.
+            this.isDefaultPrevented = src.defaultPrevented ||
+            src.defaultPrevented === undefined &&
+
+            // Support: Android <=2.3 only
+            src.returnValue === false ?
+                returnTrue :
+                returnFalse;
+
+            // Create target properties
+            // Support: Safari <=6 - 7 only
+            // Target should not be a text node (#504, #13143)
+            this.target = (src.target && src.target.nodeType === 3) ?
+                src.target.parentNode :
+                src.target;
+
+            this.currentTarget = src.currentTarget;
+            this.relatedTarget = src.relatedTarget;
+
+            // Event type
+        } else {
+            this.type = src;
+        }
+
+        // Put explicitly provided properties onto the event object
+        if (props) {
+            jQuery.extend(this, props);
+        }
+
+        // Create a timestamp if incoming event doesn't have one
+        this.timeStamp = src && src.timeStamp || Date.now();
+
+        // Mark it as fixed
+        this[jQuery.expando] = true;
+    };
+
+    // jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding
+    // https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html
+    jQuery.Event.prototype = {
+        constructor: jQuery.Event,
+        isDefaultPrevented: returnFalse,
+        isPropagationStopped: returnFalse,
+        isImmediatePropagationStopped: returnFalse,
+        isSimulated: false,
+
+        preventDefault: function () {
+            var e = this.originalEvent;
+
+            this.isDefaultPrevented = returnTrue;
+
+            if (e && !this.isSimulated) {
+                e.preventDefault();
+            }
+        },
+        stopPropagation: function () {
+            var e = this.originalEvent;
+
+            this.isPropagationStopped = returnTrue;
+
+            if (e && !this.isSimulated) {
+                e.stopPropagation();
+            }
+        },
+        stopImmediatePropagation: function () {
+            var e = this.originalEvent;
+
+            this.isImmediatePropagationStopped = returnTrue;
+
+            if (e && !this.isSimulated) {
+                e.stopImmediatePropagation();
+            }
+
+            this.stopPropagation();
+        }
+    };
+
+    // Includes all common event props including KeyEvent and MouseEvent specific props
+    jQuery.each({
+        altKey: true,
+        bubbles: true,
+        cancelable: true,
+        changedTouches: true,
+        ctrlKey: true,
+        detail: true,
+        eventPhase: true,
+        metaKey: true,
+        pageX: true,
+        pageY: true,
+        shiftKey: true,
+        view: true,
+        "char": true,
+        charCode: true,
+        key: true,
+        keyCode: true,
+        button: true,
+        buttons: true,
+        clientX: true,
+        clientY: true,
+        offsetX: true,
+        offsetY: true,
+        pointerId: true,
+        pointerType: true,
+        screenX: true,
+        screenY: true,
+        targetTouches: true,
+        toElement: true,
+        touches: true,
+
+        which: function (event) {
+            var button = event.button;
+
+            // Add which for key events
+            if (event.which == null && rkeyEvent.test(event.type)) {
+                return event.charCode != null ? event.charCode : event.keyCode;
+            }
+
+            // Add which for click: 1 === left; 2 === middle; 3 === right
+            if (!event.which && button !== undefined && rmouseEvent.test(event.type)) {
+                if (button & 1) {
+                    return 1;
+                }
+
+                if (button & 2) {
+                    return 3;
+                }
+
+                if (button & 4) {
+                    return 2;
+                }
+
+                return 0;
+            }
+
+            return event.which;
+        }
+    }, jQuery.event.addProp);
+
+    // Create mouseenter/leave events using mouseover/out and event-time checks
+    // so that event delegation works in jQuery.
+    // Do the same for pointerenter/pointerleave and pointerover/pointerout
+    //
+    // Support: Safari 7 only
+    // Safari sends mouseenter too often; see:
+    // https://bugs.chromium.org/p/chromium/issues/detail?id=470258
+    // for the description of the bug (it existed in older Chrome versions as well).
+    jQuery.each({
+        mouseenter: "mouseover",
+        mouseleave: "mouseout",
+        pointerenter: "pointerover",
+        pointerleave: "pointerout"
+    }, function (orig, fix) {
+        jQuery.event.special[orig] = {
+            delegateType: fix,
+            bindType: fix,
+
+            handle: function (event) {
+                var ret,
+                    target = this,
+                    related = event.relatedTarget,
+                    handleObj = event.handleObj;
+
+                // For mouseenter/leave call the handler if related is outside the target.
+                // NB: No relatedTarget if the mouse left/entered the browser window
+                if (!related || (related !== target && !jQuery.contains(target, related))) {
+                    event.type = handleObj.origType;
+                    ret = handleObj.handler.apply(this, arguments);
+                    event.type = fix;
+                }
+                return ret;
+            }
+        };
+    });
+
+    jQuery.fn.extend({
+
+        on: function (types, selector, data, fn) {
+            return on(this, types, selector, data, fn);
+        },
+        one: function (types, selector, data, fn) {
+            return on(this, types, selector, data, fn, 1);
+        },
+        off: function (types, selector, fn) {
+            var handleObj, type;
+            if (types && types.preventDefault && types.handleObj) {
+
+                // ( event )  dispatched jQuery.Event
+                handleObj = types.handleObj;
+                jQuery(types.delegateTarget).off(
+                    handleObj.namespace ?
+                        handleObj.origType + "." + handleObj.namespace :
+                        handleObj.origType,
+                    handleObj.selector,
+                    handleObj.handler
+                );
+                return this;
+            }
+            if (typeof types === "object") {
+
+                // ( types-object [, selector] )
+                for (type in types) {
+                    this.off(type, selector, types[type]);
+                }
+                return this;
+            }
+            if (selector === false || typeof selector === "function") {
+
+                // ( types [, fn] )
+                fn = selector;
+                selector = undefined;
+            }
+            if (fn === false) {
+                fn = returnFalse;
+            }
+            return this.each(function () {
+                jQuery.event.remove(this, types, fn, selector);
+            });
+        }
+    });
+
+
+    var
+
+        /* eslint-disable max-len */
+
+        // See https://github.com/eslint/eslint/issues/3229
+        rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([a-z][^\/\0>\x20\t\r\n\f]*)[^>]*)\/>/gi,
+
+        /* eslint-enable */
+
+        // Support: IE <=10 - 11, Edge 12 - 13 only
+        // In IE/Edge using regex groups here causes severe slowdowns.
+        // See https://connect.microsoft.com/IE/feedback/details/1736512/
+        rnoInnerhtml = /<script|<style|<link/i,
+
+        // checked="checked" or checked
+        rchecked = /checked\s*(?:[^=]|=\s*.checked.)/i,
+        rcleanScript = /^\s*<!(?:\[CDATA\[|--)|(?:\]\]|--)>\s*$/g;
+
+    // Prefer a tbody over its parent table for containing new rows
+    function manipulationTarget(elem, content) {
+        if (nodeName(elem, "table") &&
+            nodeName(content.nodeType !== 11 ? content : content.firstChild, "tr")) {
+
+            return jQuery(elem).children("tbody")[0] || elem;
+        }
+
+        return elem;
+    }
+
+    // Replace/restore the type attribute of script elements for safe DOM manipulation
+    function disableScript(elem) {
+        elem.type = (elem.getAttribute("type") !== null) + "/" + elem.type;
+        return elem;
+    }
+
+    function restoreScript(elem) {
+        if ((elem.type || "").slice(0, 5) === "true/") {
+            elem.type = elem.type.slice(5);
+        } else {
+            elem.removeAttribute("type");
+        }
+
+        return elem;
+    }
+
+    function cloneCopyEvent(src, dest) {
+        var i, l, type, pdataOld, pdataCur, udataOld, udataCur, events;
+
+        if (dest.nodeType !== 1) {
+            return;
+        }
+
+        // 1. Copy private data: events, handlers, etc.
+        if (dataPriv.hasData(src)) {
+            pdataOld = dataPriv.access(src);
+            pdataCur = dataPriv.set(dest, pdataOld);
+            events = pdataOld.events;
+
+            if (events) {
+                delete pdataCur.handle;
+                pdataCur.events = {};
+
+                for (type in events) {
+                    for (i = 0, l = events[type].length; i < l; i++) {
+                        jQuery.event.add(dest, type, events[type][i]);
+                    }
+                }
+            }
+        }
+
+        // 2. Copy user data
+        if (dataUser.hasData(src)) {
+            udataOld = dataUser.access(src);
+            udataCur = jQuery.extend({}, udataOld);
+
+            dataUser.set(dest, udataCur);
+        }
+    }
+
+    // Fix IE bugs, see support tests
+    function fixInput(src, dest) {
+        var nodeName = dest.nodeName.toLowerCase();
+
+        // Fails to persist the checked state of a cloned checkbox or radio button.
+        if (nodeName === "input" && rcheckableType.test(src.type)) {
+            dest.checked = src.checked;
+
+            // Fails to return the selected option to the default selected state when cloning options
+        } else if (nodeName === "input" || nodeName === "textarea") {
+            dest.defaultValue = src.defaultValue;
+        }
+    }
+
+    function domManip(collection, args, callback, ignored) {
+
+        // Flatten any nested arrays
+        args = concat.apply([], args);
+
+        var fragment, first, scripts, hasScripts, node, doc,
+            i = 0,
+            l = collection.length,
+            iNoClone = l - 1,
+            value = args[0],
+            valueIsFunction = isFunction(value);
+
+        // We can't cloneNode fragments that contain checked, in WebKit
+        if (valueIsFunction ||
+            (l > 1 && typeof value === "string" &&
+                !support.checkClone && rchecked.test(value))) {
+            return collection.each(function (index) {
+                var self = collection.eq(index);
+                if (valueIsFunction) {
+                    args[0] = value.call(this, index, self.html());
+                }
+                domManip(self, args, callback, ignored);
+            });
+        }
+
+        if (l) {
+            fragment = buildFragment(args, collection[0].ownerDocument, false, collection, ignored);
+            first = fragment.firstChild;
+
+            if (fragment.childNodes.length === 1) {
+                fragment = first;
+            }
+
+            // Require either new content or an interest in ignored elements to invoke the callback
+            if (first || ignored) {
+                scripts = jQuery.map(getAll(fragment, "script"), disableScript);
+                hasScripts = scripts.length;
+
+                // Use the original fragment for the last item
+                // instead of the first because it can end up
+                // being emptied incorrectly in certain situations (#8070).
+                for (; i < l; i++) {
+                    node = fragment;
+
+                    if (i !== iNoClone) {
+                        node = jQuery.clone(node, true, true);
+
+                        // Keep references to cloned scripts for later restoration
+                        if (hasScripts) {
+
+                            // Support: Android <=4.0 only, PhantomJS 1 only
+                            // push.apply(_, arraylike) throws on ancient WebKit
+                            jQuery.merge(scripts, getAll(node, "script"));
+                        }
+                    }
+
+                    callback.call(collection[i], node, i);
+                }
+
+                if (hasScripts) {
+                    doc = scripts[scripts.length - 1].ownerDocument;
+
+                    // Reenable scripts
+                    jQuery.map(scripts, restoreScript);
+
+                    // Evaluate executable scripts on first document insertion
+                    for (i = 0; i < hasScripts; i++) {
+                        node = scripts[i];
+                        if (rscriptType.test(node.type || "") &&
+                            !dataPriv.access(node, "globalEval") &&
+                            jQuery.contains(doc, node)) {
+
+                            if (node.src && (node.type || "").toLowerCase() !== "module") {
+
+                                // Optional AJAX dependency, but won't run scripts if not present
+                                if (jQuery._evalUrl) {
+                                    jQuery._evalUrl(node.src);
+                                }
+                            } else {
+                                DOMEval(node.textContent.replace(rcleanScript, ""), doc, node);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+
+        return collection;
+    }
+
+    function remove(elem, selector, keepData) {
+        var node,
+            nodes = selector ? jQuery.filter(selector, elem) : elem,
+            i = 0;
+
+        for (; (node = nodes[i]) != null; i++) {
+            if (!keepData && node.nodeType === 1) {
+                jQuery.cleanData(getAll(node));
+            }
+
+            if (node.parentNode) {
+                if (keepData && jQuery.contains(node.ownerDocument, node)) {
+                    setGlobalEval(getAll(node, "script"));
+                }
+                node.parentNode.removeChild(node);
+            }
+        }
+
+        return elem;
+    }
+
+    jQuery.extend({
+        htmlPrefilter: function (html) {
+            return html.replace(rxhtmlTag, "<$1></$2>");
+        },
+
+        clone: function (elem, dataAndEvents, deepDataAndEvents) {
+            var i, l, srcElements, destElements,
+                clone = elem.cloneNode(true),
+                inPage = jQuery.contains(elem.ownerDocument, elem);
+
+            // Fix IE cloning issues
+            if (!support.noCloneChecked && (elem.nodeType === 1 || elem.nodeType === 11) &&
+                !jQuery.isXMLDoc(elem)) {
+
+                // We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2
+                destElements = getAll(clone);
+                srcElements = getAll(elem);
+
+                for (i = 0, l = srcElements.length; i < l; i++) {
+                    fixInput(srcElements[i], destElements[i]);
+                }
+            }
+
+            // Copy the events from the original to the clone
+            if (dataAndEvents) {
+                if (deepDataAndEvents) {
+                    srcElements = srcElements || getAll(elem);
+                    destElements = destElements || getAll(clone);
+
+                    for (i = 0, l = srcElements.length; i < l; i++) {
+                        cloneCopyEvent(srcElements[i], destElements[i]);
+                    }
+                } else {
+                    cloneCopyEvent(elem, clone);
+                }
+            }
+
+            // Preserve script evaluation history
+            destElements = getAll(clone, "script");
+            if (destElements.length > 0) {
+                setGlobalEval(destElements, !inPage && getAll(elem, "script"));
+            }
+
+            // Return the cloned set
+            return clone;
+        },
+
+        cleanData: function (elems) {
+            var data, elem, type,
+                special = jQuery.event.special,
+                i = 0;
+
+            for (; (elem = elems[i]) !== undefined; i++) {
+                if (acceptData(elem)) {
+                    if ((data = elem[dataPriv.expando])) {
+                        if (data.events) {
+                            for (type in data.events) {
+                                if (special[type]) {
+                                    jQuery.event.remove(elem, type);
+
+                                    // This is a shortcut to avoid jQuery.event.remove's overhead
+                                } else {
+                                    jQuery.removeEvent(elem, type, data.handle);
+                                }
+                            }
+                        }
+
+                        // Support: Chrome <=35 - 45+
+                        // Assign undefined instead of using delete, see Data#remove
+                        elem[dataPriv.expando] = undefined;
+                    }
+                    if (elem[dataUser.expando]) {
+
+                        // Support: Chrome <=35 - 45+
+                        // Assign undefined instead of using delete, see Data#remove
+                        elem[dataUser.expando] = undefined;
+                    }
+                }
+            }
+        }
+    });
+
+    jQuery.fn.extend({
+        detach: function (selector) {
+            return remove(this, selector, true);
+        },
+
+        remove: function (selector) {
+            return remove(this, selector);
+        },
+
+        text: function (value) {
+            return access(this, function (value) {
+                return value === undefined ?
+                    jQuery.text(this) :
+                    this.empty().each(function () {
+                        if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) {
+                            this.textContent = value;
+                        }
+                    });
+            }, null, value, arguments.length);
+        },
+
+        append: function () {
+            return domManip(this, arguments, function (elem) {
+                if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) {
+                    var target = manipulationTarget(this, elem);
+                    target.appendChild(elem);
+                }
+            });
+        },
+
+        prepend: function () {
+            return domManip(this, arguments, function (elem) {
+                if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) {
+                    var target = manipulationTarget(this, elem);
+                    target.insertBefore(elem, target.firstChild);
+                }
+            });
+        },
+
+        before: function () {
+            return domManip(this, arguments, function (elem) {
+                if (this.parentNode) {
+                    this.parentNode.insertBefore(elem, this);
+                }
+            });
+        },
+
+        after: function () {
+            return domManip(this, arguments, function (elem) {
+                if (this.parentNode) {
+                    this.parentNode.insertBefore(elem, this.nextSibling);
+                }
+            });
+        },
+
+        empty: function () {
+            var elem,
+                i = 0;
+
+            for (; (elem = this[i]) != null; i++) {
+                if (elem.nodeType === 1) {
+
+                    // Prevent memory leaks
+                    jQuery.cleanData(getAll(elem, false));
+
+                    // Remove any remaining nodes
+                    elem.textContent = "";
+                }
+            }
+
+            return this;
+        },
+
+        clone: function (dataAndEvents, deepDataAndEvents) {
+            dataAndEvents = dataAndEvents == null ? false : dataAndEvents;
+            deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;
+
+            return this.map(function () {
+                return jQuery.clone(this, dataAndEvents, deepDataAndEvents);
+            });
+        },
+
+        html: function (value) {
+            return access(this, function (value) {
+                var elem = this[0] || {},
+                    i = 0,
+                    l = this.length;
+
+                if (value === undefined && elem.nodeType === 1) {
+                    return elem.innerHTML;
+                }
+
+                // See if we can take a shortcut and just use innerHTML
+                if (typeof value === "string" && !rnoInnerhtml.test(value) &&
+                    !wrapMap[(rtagName.exec(value) || ["", ""])[1].toLowerCase()]) {
+
+                    value = jQuery.htmlPrefilter(value);
+
+                    try {
+                        for (; i < l; i++) {
+                            elem = this[i] || {};
+
+                            // Remove element nodes and prevent memory leaks
+                            if (elem.nodeType === 1) {
+                                jQuery.cleanData(getAll(elem, false));
+                                elem.innerHTML = value;
+                            }
+                        }
+
+                        elem = 0;
+
+                        // If using innerHTML throws an exception, use the fallback method
+                    } catch (e) {
+                    }
+                }
+
+                if (elem) {
+                    this.empty().append(value);
+                }
+            }, null, value, arguments.length);
+        },
+
+        replaceWith: function () {
+            var ignored = [];
+
+            // Make the changes, replacing each non-ignored context element with the new content
+            return domManip(this, arguments, function (elem) {
+                var parent = this.parentNode;
+
+                if (jQuery.inArray(this, ignored) < 0) {
+                    jQuery.cleanData(getAll(this));
+                    if (parent) {
+                        parent.replaceChild(elem, this);
+                    }
+                }
+
+                // Force callback invocation
+            }, ignored);
+        }
+    });
+
+    jQuery.each({
+        appendTo: "append",
+        prependTo: "prepend",
+        insertBefore: "before",
+        insertAfter: "after",
+        replaceAll: "replaceWith"
+    }, function (name, original) {
+        jQuery.fn[name] = function (selector) {
+            var elems,
+                ret = [],
+                insert = jQuery(selector),
+                last = insert.length - 1,
+                i = 0;
+
+            for (; i <= last; i++) {
+                elems = i === last ? this : this.clone(true);
+                jQuery(insert[i])[original](elems);
+
+                // Support: Android <=4.0 only, PhantomJS 1 only
+                // .get() because push.apply(_, arraylike) throws on ancient WebKit
+                push.apply(ret, elems.get());
+            }
+
+            return this.pushStack(ret);
+        };
+    });
+    var rnumnonpx = new RegExp("^(" + pnum + ")(?!px)[a-z%]+$", "i");
+
+    var getStyles = function (elem) {
+
+        // Support: IE <=11 only, Firefox <=30 (#15098, #14150)
+        // IE throws on elements created in popups
+        // FF meanwhile throws on frame elements through "defaultView.getComputedStyle"
+        var view = elem.ownerDocument.defaultView;
+
+        if (!view || !view.opener) {
+            view = window;
+        }
+
+        return view.getComputedStyle(elem);
+    };
+
+    var rboxStyle = new RegExp(cssExpand.join("|"), "i");
+
+
+    (function () {
+
+        // Executing both pixelPosition & boxSizingReliable tests require only one layout
+        // so they're executed at the same time to save the second computation.
+        function computeStyleTests() {
+
+            // This is a singleton, we need to execute it only once
+            if (!div) {
+                return;
+            }
+
+            container.style.cssText = "position:absolute;left:-11111px;width:60px;" +
+                "margin-top:1px;padding:0;border:0";
+            div.style.cssText =
+                "position:relative;display:block;box-sizing:border-box;overflow:scroll;" +
+                "margin:auto;border:1px;padding:1px;" +
+                "width:60%;top:1%";
+            documentElement.appendChild(container).appendChild(div);
+
+            var divStyle = window.getComputedStyle(div);
+            pixelPositionVal = divStyle.top !== "1%";
+
+            // Support: Android 4.0 - 4.3 only, Firefox <=3 - 44
+            reliableMarginLeftVal = roundPixelMeasures(divStyle.marginLeft) === 12;
+
+            // Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3
+            // Some styles come back with percentage values, even though they shouldn't
+            div.style.right = "60%";
+            pixelBoxStylesVal = roundPixelMeasures(divStyle.right) === 36;
+
+            // Support: IE 9 - 11 only
+            // Detect misreporting of content dimensions for box-sizing:border-box elements
+            boxSizingReliableVal = roundPixelMeasures(divStyle.width) === 36;
+
+            // Support: IE 9 only
+            // Detect overflow:scroll screwiness (gh-3699)
+            div.style.position = "absolute";
+            scrollboxSizeVal = div.offsetWidth === 36 || "absolute";
+
+            documentElement.removeChild(container);
+
+            // Nullify the div so it wouldn't be stored in the memory and
+            // it will also be a sign that checks already performed
+            div = null;
+        }
+
+        function roundPixelMeasures(measure) {
+            return Math.round(parseFloat(measure));
+        }
+
+        var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal,
+            reliableMarginLeftVal,
+            container = document$1.createElement("div"),
+            div = document$1.createElement("div");
+
+        // Finish early in limited (non-browser) environments
+        if (!div.style) {
+            return;
+        }
+
+        // Support: IE <=9 - 11 only
+        // Style of cloned element affects source element cloned (#8908)
+        div.style.backgroundClip = "content-box";
+        div.cloneNode(true).style.backgroundClip = "";
+        support.clearCloneStyle = div.style.backgroundClip === "content-box";
+
+        jQuery.extend(support, {
+            boxSizingReliable: function () {
+                computeStyleTests();
+                return boxSizingReliableVal;
+            },
+            pixelBoxStyles: function () {
+                computeStyleTests();
+                return pixelBoxStylesVal;
+            },
+            pixelPosition: function () {
+                computeStyleTests();
+                return pixelPositionVal;
+            },
+            reliableMarginLeft: function () {
+                computeStyleTests();
+                return reliableMarginLeftVal;
+            },
+            scrollboxSize: function () {
+                computeStyleTests();
+                return scrollboxSizeVal;
+            }
+        });
+    })();
+
+
+    function curCSS(elem, name, computed) {
+        var width, minWidth, maxWidth, ret,
+
+            // Support: Firefox 51+
+            // Retrieving style before computed somehow
+            // fixes an issue with getting wrong values
+            // on detached elements
+            style = elem.style;
+
+        computed = computed || getStyles(elem);
+
+        // getPropertyValue is needed for:
+        //   .css('filter') (IE 9 only, #12537)
+        //   .css('--customProperty) (#3144)
+        if (computed) {
+            ret = computed.getPropertyValue(name) || computed[name];
+
+            if (ret === "" && !jQuery.contains(elem.ownerDocument, elem)) {
+                ret = jQuery.style(elem, name);
+            }
+
+            // A tribute to the "awesome hack by Dean Edwards"
+            // Android Browser returns percentage for some values,
+            // but width seems to be reliably pixels.
+            // This is against the CSSOM draft spec:
+            // https://drafts.csswg.org/cssom/#resolved-values
+            if (!support.pixelBoxStyles() && rnumnonpx.test(ret) && rboxStyle.test(name)) {
+
+                // Remember the original values
+                width = style.width;
+                minWidth = style.minWidth;
+                maxWidth = style.maxWidth;
+
+                // Put in the new values to get a computed value out
+                style.minWidth = style.maxWidth = style.width = ret;
+                ret = computed.width;
+
+                // Revert the changed values
+                style.width = width;
+                style.minWidth = minWidth;
+                style.maxWidth = maxWidth;
+            }
+        }
+
+        return ret !== undefined ?
+
+            // Support: IE <=9 - 11 only
+            // IE returns zIndex value as an integer.
+            ret + "" :
+            ret;
+    }
+
+
+    function addGetHookIf(conditionFn, hookFn) {
+
+        // Define the hook, we'll check on the first run if it's really needed.
+        return {
+            get: function () {
+                if (conditionFn()) {
+
+                    // Hook not needed (or it's not possible to use it due
+                    // to missing dependency), remove it.
+                    delete this.get;
+                    return;
+                }
+
+                // Hook needed; redefine it so that the support test is not executed again.
+                return (this.get = hookFn).apply(this, arguments);
+            }
+        };
+    }
+
+
+    var
+
+        // Swappable if display is none or starts with table
+        // except "table", "table-cell", or "table-caption"
+        // See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display
+        rdisplayswap = /^(none|table(?!-c[ea]).+)/,
+        rcustomProp = /^--/,
+        cssShow = {position: "absolute", visibility: "hidden", display: "block"},
+        cssNormalTransform = {
+            letterSpacing: "0",
+            fontWeight: "400"
+        },
+
+        cssPrefixes = ["Webkit", "Moz", "ms"],
+        emptyStyle = document$1.createElement("div").style;
+
+    // Return a css property mapped to a potentially vendor prefixed property
+    function vendorPropName(name) {
+
+        // Shortcut for names that are not vendor prefixed
+        if (name in emptyStyle) {
+            return name;
+        }
+
+        // Check for vendor prefixed names
+        var capName = name[0].toUpperCase() + name.slice(1),
+            i = cssPrefixes.length;
+
+        while (i--) {
+            name = cssPrefixes[i] + capName;
+            if (name in emptyStyle) {
+                return name;
+            }
+        }
+    }
+
+    // Return a property mapped along what jQuery.cssProps suggests or to
+    // a vendor prefixed property.
+    function finalPropName(name) {
+        var ret = jQuery.cssProps[name];
+        if (!ret) {
+            ret = jQuery.cssProps[name] = vendorPropName(name) || name;
+        }
+        return ret;
+    }
+
+    function setPositiveNumber(elem, value, subtract) {
+
+        // Any relative (+/-) values have already been
+        // normalized at this point
+        var matches = rcssNum.exec(value);
+        return matches ?
+
+            // Guard against undefined "subtract", e.g., when used as in cssHooks
+            Math.max(0, matches[2] - (subtract || 0)) + (matches[3] || "px") :
+            value;
+    }
+
+    function boxModelAdjustment(elem, dimension, box, isBorderBox, styles, computedVal) {
+        var i = dimension === "width" ? 1 : 0,
+            extra = 0,
+            delta = 0;
+
+        // Adjustment may not be necessary
+        if (box === (isBorderBox ? "border" : "content")) {
+            return 0;
+        }
+
+        for (; i < 4; i += 2) {
+
+            // Both box models exclude margin
+            if (box === "margin") {
+                delta += jQuery.css(elem, box + cssExpand[i], true, styles);
+            }
+
+            // If we get here with a content-box, we're seeking "padding" or "border" or "margin"
+            if (!isBorderBox) {
+
+                // Add padding
+                delta += jQuery.css(elem, "padding" + cssExpand[i], true, styles);
+
+                // For "border" or "margin", add border
+                if (box !== "padding") {
+                    delta += jQuery.css(elem, "border" + cssExpand[i] + "Width", true, styles);
+
+                    // But still keep track of it otherwise
+                } else {
+                    extra += jQuery.css(elem, "border" + cssExpand[i] + "Width", true, styles);
+                }
+
+                // If we get here with a border-box (content + padding + border), we're seeking "content" or
+                // "padding" or "margin"
+            } else {
+
+                // For "content", subtract padding
+                if (box === "content") {
+                    delta -= jQuery.css(elem, "padding" + cssExpand[i], true, styles);
+                }
+
+                // For "content" or "padding", subtract border
+                if (box !== "margin") {
+                    delta -= jQuery.css(elem, "border" + cssExpand[i] + "Width", true, styles);
+                }
+            }
+        }
+
+        // Account for positive content-box scroll gutter when requested by providing computedVal
+        if (!isBorderBox && computedVal >= 0) {
+
+            // offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border
+            // Assuming integer scroll gutter, subtract the rest and round down
+            delta += Math.max(0, Math.ceil(
+                elem["offset" + dimension[0].toUpperCase() + dimension.slice(1)] -
+                computedVal -
+                delta -
+                extra -
+                0.5
+            ));
+        }
+
+        return delta;
+    }
+
+    function getWidthOrHeight(elem, dimension, extra) {
+
+        // Start with computed style
+        var styles = getStyles(elem),
+            val = curCSS(elem, dimension, styles),
+            isBorderBox = jQuery.css(elem, "boxSizing", false, styles) === "border-box",
+            valueIsBorderBox = isBorderBox;
+
+        // Support: Firefox <=54
+        // Return a confounding non-pixel value or feign ignorance, as appropriate.
+        if (rnumnonpx.test(val)) {
+            if (!extra) {
+                return val;
+            }
+            val = "auto";
+        }
+
+        // Check for style in case a browser which returns unreliable values
+        // for getComputedStyle silently falls back to the reliable elem.style
+        valueIsBorderBox = valueIsBorderBox &&
+            (support.boxSizingReliable() || val === elem.style[dimension]);
+
+        // Fall back to offsetWidth/offsetHeight when value is "auto"
+        // This happens for inline elements with no explicit setting (gh-3571)
+        // Support: Android <=4.1 - 4.3 only
+        // Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602)
+        if (val === "auto" ||
+            !parseFloat(val) && jQuery.css(elem, "display", false, styles) === "inline") {
+
+            val = elem["offset" + dimension[0].toUpperCase() + dimension.slice(1)];
+
+            // offsetWidth/offsetHeight provide border-box values
+            valueIsBorderBox = true;
+        }
+
+        // Normalize "" and auto
+        val = parseFloat(val) || 0;
+
+        // Adjust for the element's box model
+        return (val +
+            boxModelAdjustment(
+                elem,
+                dimension,
+                extra || (isBorderBox ? "border" : "content"),
+                valueIsBorderBox,
+                styles,
+
+                // Provide the current computed size to request scroll gutter calculation (gh-3589)
+                val
+            )
+        ) + "px";
+    }
+
+    jQuery.extend({
+
+        // Add in style property hooks for overriding the default
+        // behavior of getting and setting a style property
+        cssHooks: {
+            opacity: {
+                get: function (elem, computed) {
+                    if (computed) {
+
+                        // We should always get a number back from opacity
+                        var ret = curCSS(elem, "opacity");
+                        return ret === "" ? "1" : ret;
+                    }
+                }
+            }
+        },
+
+        // Don't automatically add "px" to these possibly-unitless properties
+        cssNumber: {
+            "animationIterationCount": true,
+            "columnCount": true,
+            "fillOpacity": true,
+            "flexGrow": true,
+            "flexShrink": true,
+            "fontWeight": true,
+            "lineHeight": true,
+            "opacity": true,
+            "order": true,
+            "orphans": true,
+            "widows": true,
+            "zIndex": true,
+            "zoom": true
+        },
+
+        // Add in properties whose names you wish to fix before
+        // setting or getting the value
+        cssProps: {},
+
+        // Get and set the style property on a DOM Node
+        style: function (elem, name, value, extra) {
+
+            // Don't set styles on text and comment nodes
+            if (!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style) {
+                return;
+            }
+
+            // Make sure that we're working with the right name
+            var ret, type, hooks,
+                origName = camelCase(name),
+                isCustomProp = rcustomProp.test(name),
+                style = elem.style;
+
+            // Make sure that we're working with the right name. We don't
+            // want to query the value if it is a CSS custom property
+            // since they are user-defined.
+            if (!isCustomProp) {
+                name = finalPropName(origName);
+            }
+
+            // Gets hook for the prefixed version, then unprefixed version
+            hooks = jQuery.cssHooks[name] || jQuery.cssHooks[origName];
+
+            // Check if we're setting a value
+            if (value !== undefined) {
+                type = typeof value;
+
+                // Convert "+=" or "-=" to relative numbers (#7345)
+                if (type === "string" && (ret = rcssNum.exec(value)) && ret[1]) {
+                    value = adjustCSS(elem, name, ret);
+
+                    // Fixes bug #9237
+                    type = "number";
+                }
+
+                // Make sure that null and NaN values aren't set (#7116)
+                if (value == null || value !== value) {
+                    return;
+                }
+
+                // If a number was passed in, add the unit (except for certain CSS properties)
+                if (type === "number") {
+                    value += ret && ret[3] || (jQuery.cssNumber[origName] ? "" : "px");
+                }
+
+                // background-* props affect original clone's values
+                if (!support.clearCloneStyle && value === "" && name.indexOf("background") === 0) {
+                    style[name] = "inherit";
+                }
+
+                // If a hook was provided, use that value, otherwise just set the specified value
+                if (!hooks || !("set" in hooks) ||
+                    (value = hooks.set(elem, value, extra)) !== undefined) {
+
+                    if (isCustomProp) {
+                        style.setProperty(name, value);
+                    } else {
+                        style[name] = value;
+                    }
+                }
+
+            } else {
+
+                // If a hook was provided get the non-computed value from there
+                if (hooks && "get" in hooks &&
+                    (ret = hooks.get(elem, false, extra)) !== undefined) {
+
+                    return ret;
+                }
+
+                // Otherwise just get the value from the style object
+                return style[name];
+            }
+        },
+
+        css: function (elem, name, extra, styles) {
+            var val, num, hooks,
+                origName = camelCase(name),
+                isCustomProp = rcustomProp.test(name);
+
+            // Make sure that we're working with the right name. We don't
+            // want to modify the value if it is a CSS custom property
+            // since they are user-defined.
+            if (!isCustomProp) {
+                name = finalPropName(origName);
+            }
+
+            // Try prefixed name followed by the unprefixed name
+            hooks = jQuery.cssHooks[name] || jQuery.cssHooks[origName];
+
+            // If a hook was provided get the computed value from there
+            if (hooks && "get" in hooks) {
+                val = hooks.get(elem, true, extra);
+            }
+
+            // Otherwise, if a way to get the computed value exists, use that
+            if (val === undefined) {
+                val = curCSS(elem, name, styles);
+            }
+
+            // Convert "normal" to computed value
+            if (val === "normal" && name in cssNormalTransform) {
+                val = cssNormalTransform[name];
+            }
+
+            // Make numeric if forced or a qualifier was provided and val looks numeric
+            if (extra === "" || extra) {
+                num = parseFloat(val);
+                return extra === true || isFinite(num) ? num || 0 : val;
+            }
+
+            return val;
+        }
+    });
+
+    jQuery.each(["height", "width"], function (i, dimension) {
+        jQuery.cssHooks[dimension] = {
+            get: function (elem, computed, extra) {
+                if (computed) {
+
+                    // Certain elements can have dimension info if we invisibly show them
+                    // but it must have a current display style that would benefit
+                    return rdisplayswap.test(jQuery.css(elem, "display")) &&
+
+                    // Support: Safari 8+
+                    // Table columns in Safari have non-zero offsetWidth & zero
+                    // getBoundingClientRect().width unless display is changed.
+                    // Support: IE <=11 only
+                    // Running getBoundingClientRect on a disconnected node
+                    // in IE throws an error.
+                    (!elem.getClientRects().length || !elem.getBoundingClientRect().width) ?
+                        swap(elem, cssShow, function () {
+                            return getWidthOrHeight(elem, dimension, extra);
+                        }) :
+                        getWidthOrHeight(elem, dimension, extra);
+                }
+            },
+
+            set: function (elem, value, extra) {
+                var matches,
+                    styles = getStyles(elem),
+                    isBorderBox = jQuery.css(elem, "boxSizing", false, styles) === "border-box",
+                    subtract = extra && boxModelAdjustment(
+                        elem,
+                        dimension,
+                        extra,
+                        isBorderBox,
+                        styles
+                    );
+
+                // Account for unreliable border-box dimensions by comparing offset* to computed and
+                // faking a content-box to get border and padding (gh-3699)
+                if (isBorderBox && support.scrollboxSize() === styles.position) {
+                    subtract -= Math.ceil(
+                        elem["offset" + dimension[0].toUpperCase() + dimension.slice(1)] -
+                        parseFloat(styles[dimension]) -
+                        boxModelAdjustment(elem, dimension, "border", false, styles) -
+                        0.5
+                    );
+                }
+
+                // Convert to pixels if value adjustment is needed
+                if (subtract && (matches = rcssNum.exec(value)) &&
+                    (matches[3] || "px") !== "px") {
+
+                    elem.style[dimension] = value;
+                    value = jQuery.css(elem, dimension);
+                }
+
+                return setPositiveNumber(elem, value, subtract);
+            }
+        };
+    });
+
+    jQuery.cssHooks.marginLeft = addGetHookIf(support.reliableMarginLeft,
+        function (elem, computed) {
+            if (computed) {
+                return (parseFloat(curCSS(elem, "marginLeft")) ||
+                    elem.getBoundingClientRect().left -
+                    swap(elem, {marginLeft: 0}, function () {
+                        return elem.getBoundingClientRect().left;
+                    })
+                ) + "px";
+            }
+        }
+    );
+
+    // These hooks are used by animate to expand properties
+    jQuery.each({
+        margin: "",
+        padding: "",
+        border: "Width"
+    }, function (prefix, suffix) {
+        jQuery.cssHooks[prefix + suffix] = {
+            expand: function (value) {
+                var i = 0,
+                    expanded = {},
+
+                    // Assumes a single number if not a string
+                    parts = typeof value === "string" ? value.split(" ") : [value];
+
+                for (; i < 4; i++) {
+                    expanded[prefix + cssExpand[i] + suffix] =
+                        parts[i] || parts[i - 2] || parts[0];
+                }
+
+                return expanded;
+            }
+        };
+
+        if (prefix !== "margin") {
+            jQuery.cssHooks[prefix + suffix].set = setPositiveNumber;
+        }
+    });
+
+    jQuery.fn.extend({
+        css: function (name, value) {
+            return access(this, function (elem, name, value) {
+                var styles, len,
+                    map = {},
+                    i = 0;
+
+                if (Array.isArray(name)) {
+                    styles = getStyles(elem);
+                    len = name.length;
+
+                    for (; i < len; i++) {
+                        map[name[i]] = jQuery.css(elem, name[i], false, styles);
+                    }
+
+                    return map;
+                }
+
+                return value !== undefined ?
+                    jQuery.style(elem, name, value) :
+                    jQuery.css(elem, name);
+            }, name, value, arguments.length > 1);
+        }
+    });
+
+
+    // Based off of the plugin by Clint Helfers, with permission.
+    // https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/
+    jQuery.fn.delay = function (time, type) {
+        time = jQuery.fx ? jQuery.fx.speeds[time] || time : time;
+        type = type || "fx";
+
+        return this.queue(type, function (next, hooks) {
+            var timeout = window.setTimeout(next, time);
+            hooks.stop = function () {
+                window.clearTimeout(timeout);
+            };
+        });
+    };
+
+
+    (function () {
+        var input = document$1.createElement("input"),
+            select = document$1.createElement("select"),
+            opt = select.appendChild(document$1.createElement("option"));
+
+        input.type = "checkbox";
+
+        // Support: Android <=4.3 only
+        // Default value for a checkbox should be "on"
+        support.checkOn = input.value !== "";
+
+        // Support: IE <=11 only
+        // Must access selectedIndex to make default options select
+        support.optSelected = opt.selected;
+
+        // Support: IE <=11 only
+        // An input loses its value after becoming a radio
+        input = document$1.createElement("input");
+        input.value = "t";
+        input.type = "radio";
+        support.radioValue = input.value === "t";
+    })();
+
+
+    var boolHook,
+        attrHandle = jQuery.expr.attrHandle;
+
+    jQuery.fn.extend({
+        attr: function (name, value) {
+            return access(this, jQuery.attr, name, value, arguments.length > 1);
+        },
+
+        removeAttr: function (name) {
+            return this.each(function () {
+                jQuery.removeAttr(this, name);
+            });
+        }
+    });
+
+    jQuery.extend({
+        attr: function (elem, name, value) {
+            var ret, hooks,
+                nType = elem.nodeType;
+
+            // Don't get/set attributes on text, comment and attribute nodes
+            if (nType === 3 || nType === 8 || nType === 2) {
+                return;
+            }
+
+            // Fallback to prop when attributes are not supported
+            if (typeof elem.getAttribute === "undefined") {
+                return jQuery.prop(elem, name, value);
+            }
+
+            // Attribute hooks are determined by the lowercase version
+            // Grab necessary hook if one is defined
+            if (nType !== 1 || !jQuery.isXMLDoc(elem)) {
+                hooks = jQuery.attrHooks[name.toLowerCase()] ||
+                    (jQuery.expr.match.bool.test(name) ? boolHook : undefined);
+            }
+
+            if (value !== undefined) {
+                if (value === null) {
+                    jQuery.removeAttr(elem, name);
+                    return;
+                }
+
+                if (hooks && "set" in hooks &&
+                    (ret = hooks.set(elem, value, name)) !== undefined) {
+                    return ret;
+                }
+
+                elem.setAttribute(name, value + "");
+                return value;
+            }
+
+            if (hooks && "get" in hooks && (ret = hooks.get(elem, name)) !== null) {
+                return ret;
+            }
+
+            ret = jQuery.find.attr(elem, name);
+
+            // Non-existent attributes return null, we normalize to undefined
+            return ret == null ? undefined : ret;
+        },
+
+        attrHooks: {
+            type: {
+                set: function (elem, value) {
+                    if (!support.radioValue && value === "radio" &&
+                        nodeName(elem, "input")) {
+                        var val = elem.value;
+                        elem.setAttribute("type", value);
+                        if (val) {
+                            elem.value = val;
+                        }
+                        return value;
+                    }
+                }
+            }
+        },
+
+        removeAttr: function (elem, value) {
+            var name,
+                i = 0,
+
+                // Attribute names can contain non-HTML whitespace characters
+                // https://html.spec.whatwg.org/multipage/syntax.html#attributes-2
+                attrNames = value && value.match(rnothtmlwhite);
+
+            if (attrNames && elem.nodeType === 1) {
+                while ((name = attrNames[i++])) {
+                    elem.removeAttribute(name);
+                }
+            }
+        }
+    });
+
+    // Hooks for boolean attributes
+    boolHook = {
+        set: function (elem, value, name) {
+            if (value === false) {
+
+                // Remove boolean attributes when set to false
+                jQuery.removeAttr(elem, name);
+            } else {
+                elem.setAttribute(name, name);
+            }
+            return name;
+        }
+    };
+
+    jQuery.each(jQuery.expr.match.bool.source.match(/\w+/g), function (i, name) {
+        var getter = attrHandle[name] || jQuery.find.attr;
+
+        attrHandle[name] = function (elem, name, isXML) {
+            var ret, handle,
+                lowercaseName = name.toLowerCase();
+
+            if (!isXML) {
+
+                // Avoid an infinite loop by temporarily removing this function from the getter
+                handle = attrHandle[lowercaseName];
+                attrHandle[lowercaseName] = ret;
+                ret = getter(elem, name, isXML) != null ?
+                    lowercaseName :
+                    null;
+                attrHandle[lowercaseName] = handle;
+            }
+            return ret;
+        };
+    });
+
+
+    var rfocusable = /^(?:input|select|textarea|button)$/i,
+        rclickable = /^(?:a|area)$/i;
+
+    jQuery.fn.extend({
+        prop: function (name, value) {
+            return access(this, jQuery.prop, name, value, arguments.length > 1);
+        },
+
+        removeProp: function (name) {
+            return this.each(function () {
+                delete this[jQuery.propFix[name] || name];
+            });
+        }
+    });
+
+    jQuery.extend({
+        prop: function (elem, name, value) {
+            var ret, hooks,
+                nType = elem.nodeType;
+
+            // Don't get/set properties on text, comment and attribute nodes
+            if (nType === 3 || nType === 8 || nType === 2) {
+                return;
+            }
+
+            if (nType !== 1 || !jQuery.isXMLDoc(elem)) {
+
+                // Fix name and attach hooks
+                name = jQuery.propFix[name] || name;
+                hooks = jQuery.propHooks[name];
+            }
+
+            if (value !== undefined) {
+                if (hooks && "set" in hooks &&
+                    (ret = hooks.set(elem, value, name)) !== undefined) {
+                    return ret;
+                }
+
+                return (elem[name] = value);
+            }
+
+            if (hooks && "get" in hooks && (ret = hooks.get(elem, name)) !== null) {
+                return ret;
+            }
+
+            return elem[name];
+        },
+
+        propHooks: {
+            tabIndex: {
+                get: function (elem) {
+
+                    // Support: IE <=9 - 11 only
+                    // elem.tabIndex doesn't always return the
+                    // correct value when it hasn't been explicitly set
+                    // https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/
+                    // Use proper attribute retrieval(#12072)
+                    var tabindex = jQuery.find.attr(elem, "tabindex");
+
+                    if (tabindex) {
+                        return parseInt(tabindex, 10);
+                    }
+
+                    if (
+                        rfocusable.test(elem.nodeName) ||
+                        rclickable.test(elem.nodeName) &&
+                        elem.href
+                    ) {
+                        return 0;
+                    }
+
+                    return -1;
+                }
+            }
+        },
+
+        propFix: {
+            "for": "htmlFor",
+            "class": "className"
+        }
+    });
+
+    // Support: IE <=11 only
+    // Accessing the selectedIndex property
+    // forces the browser to respect setting selected
+    // on the option
+    // The getter ensures a default option is selected
+    // when in an optgroup
+    // eslint rule "no-unused-expressions" is disabled for this code
+    // since it considers such accessions noop
+    if (!support.optSelected) {
+        jQuery.propHooks.selected = {
+            get: function (elem) {
+
+                /* eslint no-unused-expressions: "off" */
+
+                var parent = elem.parentNode;
+                if (parent && parent.parentNode) {
+                    parent.parentNode.selectedIndex;
+                }
+                return null;
+            },
+            set: function (elem) {
+
+                /* eslint no-unused-expressions: "off" */
+
+                var parent = elem.parentNode;
+                if (parent) {
+                    parent.selectedIndex;
+
+                    if (parent.parentNode) {
+                        parent.parentNode.selectedIndex;
+                    }
+                }
+            }
+        };
+    }
+
+    jQuery.each([
+        "tabIndex",
+        "readOnly",
+        "maxLength",
+        "cellSpacing",
+        "cellPadding",
+        "rowSpan",
+        "colSpan",
+        "useMap",
+        "frameBorder",
+        "contentEditable"
+    ], function () {
+        jQuery.propFix[this.toLowerCase()] = this;
+    });
+
+
+    // Strip and collapse whitespace according to HTML spec
+    // https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace
+    function stripAndCollapse(value) {
+        var tokens = value.match(rnothtmlwhite) || [];
+        return tokens.join(" ");
+    }
+
+
+    function getClass(elem) {
+        return elem.getAttribute && elem.getAttribute("class") || "";
+    }
+
+    function classesToArray(value) {
+        if (Array.isArray(value)) {
+            return value;
+        }
+        if (typeof value === "string") {
+            return value.match(rnothtmlwhite) || [];
+        }
+        return [];
+    }
+
+    jQuery.fn.extend({
+        addClass: function (value) {
+            var classes, elem, cur, curValue, clazz, j, finalValue,
+                i = 0;
+
+            if (isFunction(value)) {
+                return this.each(function (j) {
+                    jQuery(this).addClass(value.call(this, j, getClass(this)));
+                });
+            }
+
+            classes = classesToArray(value);
+
+            if (classes.length) {
+                while ((elem = this[i++])) {
+                    curValue = getClass(elem);
+                    cur = elem.nodeType === 1 && (" " + stripAndCollapse(curValue) + " ");
+
+                    if (cur) {
+                        j = 0;
+                        while ((clazz = classes[j++])) {
+                            if (cur.indexOf(" " + clazz + " ") < 0) {
+                                cur += clazz + " ";
+                            }
+                        }
+
+                        // Only assign if different to avoid unneeded rendering.
+                        finalValue = stripAndCollapse(cur);
+                        if (curValue !== finalValue) {
+                            elem.setAttribute("class", finalValue);
+                        }
+                    }
+                }
+            }
+
+            return this;
+        },
+
+        removeClass: function (value) {
+            var classes, elem, cur, curValue, clazz, j, finalValue,
+                i = 0;
+
+            if (isFunction(value)) {
+                return this.each(function (j) {
+                    jQuery(this).removeClass(value.call(this, j, getClass(this)));
+                });
+            }
+
+            if (!arguments.length) {
+                return this.attr("class", "");
+            }
+
+            classes = classesToArray(value);
+
+            if (classes.length) {
+                while ((elem = this[i++])) {
+                    curValue = getClass(elem);
+
+                    // This expression is here for better compressibility (see addClass)
+                    cur = elem.nodeType === 1 && (" " + stripAndCollapse(curValue) + " ");
+
+                    if (cur) {
+                        j = 0;
+                        while ((clazz = classes[j++])) {
+
+                            // Remove *all* instances
+                            while (cur.indexOf(" " + clazz + " ") > -1) {
+                                cur = cur.replace(" " + clazz + " ", " ");
+                            }
+                        }
+
+                        // Only assign if different to avoid unneeded rendering.
+                        finalValue = stripAndCollapse(cur);
+                        if (curValue !== finalValue) {
+                            elem.setAttribute("class", finalValue);
+                        }
+                    }
+                }
+            }
+
+            return this;
+        },
+
+        toggleClass: function (value, stateVal) {
+            var type = typeof value,
+                isValidValue = type === "string" || Array.isArray(value);
+
+            if (typeof stateVal === "boolean" && isValidValue) {
+                return stateVal ? this.addClass(value) : this.removeClass(value);
+            }
+
+            if (isFunction(value)) {
+                return this.each(function (i) {
+                    jQuery(this).toggleClass(
+                        value.call(this, i, getClass(this), stateVal),
+                        stateVal
+                    );
+                });
+            }
+
+            return this.each(function () {
+                var className, i, self, classNames;
+
+                if (isValidValue) {
+
+                    // Toggle individual class names
+                    i = 0;
+                    self = jQuery(this);
+                    classNames = classesToArray(value);
+
+                    while ((className = classNames[i++])) {
+
+                        // Check each className given, space separated list
+                        if (self.hasClass(className)) {
+                            self.removeClass(className);
+                        } else {
+                            self.addClass(className);
+                        }
+                    }
+
+                    // Toggle whole class name
+                } else if (value === undefined || type === "boolean") {
+                    className = getClass(this);
+                    if (className) {
+
+                        // Store className if set
+                        dataPriv.set(this, "__className__", className);
+                    }
+
+                    // If the element has a class name or if we're passed `false`,
+                    // then remove the whole classname (if there was one, the above saved it).
+                    // Otherwise bring back whatever was previously saved (if anything),
+                    // falling back to the empty string if nothing was stored.
+                    if (this.setAttribute) {
+                        this.setAttribute("class",
+                            className || value === false ?
+                                "" :
+                                dataPriv.get(this, "__className__") || ""
+                        );
+                    }
+                }
+            });
+        },
+
+        hasClass: function (selector) {
+            var className, elem,
+                i = 0;
+
+            className = " " + selector + " ";
+            while ((elem = this[i++])) {
+                if (elem.nodeType === 1 &&
+                    (" " + stripAndCollapse(getClass(elem)) + " ").indexOf(className) > -1) {
+                    return true;
+                }
+            }
+
+            return false;
+        }
+    });
+
+
+    var rreturn = /\r/g;
+
+    jQuery.fn.extend({
+        val: function (value) {
+            var hooks, ret, valueIsFunction,
+                elem = this[0];
+
+            if (!arguments.length) {
+                if (elem) {
+                    hooks = jQuery.valHooks[elem.type] ||
+                        jQuery.valHooks[elem.nodeName.toLowerCase()];
+
+                    if (hooks &&
+                        "get" in hooks &&
+                        (ret = hooks.get(elem, "value")) !== undefined
+                    ) {
+                        return ret;
+                    }
+
+                    ret = elem.value;
+
+                    // Handle most common string cases
+                    if (typeof ret === "string") {
+                        return ret.replace(rreturn, "");
+                    }
+
+                    // Handle cases where value is null/undef or number
+                    return ret == null ? "" : ret;
+                }
+
+                return;
+            }
+
+            valueIsFunction = isFunction(value);
+
+            return this.each(function (i) {
+                var val;
+
+                if (this.nodeType !== 1) {
+                    return;
+                }
+
+                if (valueIsFunction) {
+                    val = value.call(this, i, jQuery(this).val());
+                } else {
+                    val = value;
+                }
+
+                // Treat null/undefined as ""; convert numbers to string
+                if (val == null) {
+                    val = "";
+
+                } else if (typeof val === "number") {
+                    val += "";
+
+                } else if (Array.isArray(val)) {
+                    val = jQuery.map(val, function (value) {
+                        return value == null ? "" : value + "";
+                    });
+                }
+
+                hooks = jQuery.valHooks[this.type] || jQuery.valHooks[this.nodeName.toLowerCase()];
+
+                // If set returns undefined, fall back to normal setting
+                if (!hooks || !("set" in hooks) || hooks.set(this, val, "value") === undefined) {
+                    this.value = val;
+                }
+            });
+        }
+    });
+
+    jQuery.extend({
+        valHooks: {
+            option: {
+                get: function (elem) {
+
+                    var val = jQuery.find.attr(elem, "value");
+                    return val != null ?
+                        val :
+
+                        // Support: IE <=10 - 11 only
+                        // option.text throws exceptions (#14686, #14858)
+                        // Strip and collapse whitespace
+                        // https://html.spec.whatwg.org/#strip-and-collapse-whitespace
+                        stripAndCollapse(jQuery.text(elem));
+                }
+            },
+            select: {
+                get: function (elem) {
+                    var value, option, i,
+                        options = elem.options,
+                        index = elem.selectedIndex,
+                        one = elem.type === "select-one",
+                        values = one ? null : [],
+                        max = one ? index + 1 : options.length;
+
+                    if (index < 0) {
+                        i = max;
+
+                    } else {
+                        i = one ? index : 0;
+                    }
+
+                    // Loop through all the selected options
+                    for (; i < max; i++) {
+                        option = options[i];
+
+                        // Support: IE <=9 only
+                        // IE8-9 doesn't update selected after form reset (#2551)
+                        if ((option.selected || i === index) &&
+
+                            // Don't return options that are disabled or in a disabled optgroup
+                            !option.disabled &&
+                            (!option.parentNode.disabled ||
+                                !nodeName(option.parentNode, "optgroup"))) {
+
+                            // Get the specific value for the option
+                            value = jQuery(option).val();
+
+                            // We don't need an array for one selects
+                            if (one) {
+                                return value;
+                            }
+
+                            // Multi-Selects return an array
+                            values.push(value);
+                        }
+                    }
+
+                    return values;
+                },
+
+                set: function (elem, value) {
+                    var optionSet, option,
+                        options = elem.options,
+                        values = jQuery.makeArray(value),
+                        i = options.length;
+
+                    while (i--) {
+                        option = options[i];
+
+                        /* eslint-disable no-cond-assign */
+
+                        if (option.selected =
+                            jQuery.inArray(jQuery.valHooks.option.get(option), values) > -1
+                        ) {
+                            optionSet = true;
+                        }
+
+                        /* eslint-enable no-cond-assign */
+                    }
+
+                    // Force browsers to behave consistently when non-matching value is set
+                    if (!optionSet) {
+                        elem.selectedIndex = -1;
+                    }
+                    return values;
+                }
+            }
+        }
+    });
+
+    // Radios and checkboxes getter/setter
+    jQuery.each(["radio", "checkbox"], function () {
+        jQuery.valHooks[this] = {
+            set: function (elem, value) {
+                if (Array.isArray(value)) {
+                    return (elem.checked = jQuery.inArray(jQuery(elem).val(), value) > -1);
+                }
+            }
+        };
+        if (!support.checkOn) {
+            jQuery.valHooks[this].get = function (elem) {
+                return elem.getAttribute("value") === null ? "on" : elem.value;
+            };
+        }
+    });
+
+
+    // Return jQuery for attributes-only inclusion
+
+
+    support.focusin = "onfocusin" in window;
+
+
+    var rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,
+        stopPropagationCallback = function (e) {
+            e.stopPropagation();
+        };
+
+    jQuery.extend(jQuery.event, {
+
+        trigger: function (event, data, elem, onlyHandlers) {
+
+            var i, cur, tmp, bubbleType, ontype, handle, special, lastElement,
+                eventPath = [elem || document$1],
+                type = hasOwn.call(event, "type") ? event.type : event,
+                namespaces = hasOwn.call(event, "namespace") ? event.namespace.split(".") : [];
+
+            cur = lastElement = tmp = elem = elem || document$1;
+
+            // Don't do events on text and comment nodes
+            if (elem.nodeType === 3 || elem.nodeType === 8) {
+                return;
+            }
+
+            // focus/blur morphs to focusin/out; ensure we're not firing them right now
+            if (rfocusMorph.test(type + jQuery.event.triggered)) {
+                return;
+            }
+
+            if (type.indexOf(".") > -1) {
+
+                // Namespaced trigger; create a regexp to match event type in handle()
+                namespaces = type.split(".");
+                type = namespaces.shift();
+                namespaces.sort();
+            }
+            ontype = type.indexOf(":") < 0 && "on" + type;
+
+            // Caller can pass in a jQuery.Event object, Object, or just an event type string
+            event = event[jQuery.expando] ?
+                event :
+                new jQuery.Event(type, typeof event === "object" && event);
+
+            // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)
+            event.isTrigger = onlyHandlers ? 2 : 3;
+            event.namespace = namespaces.join(".");
+            event.rnamespace = event.namespace ?
+                new RegExp("(^|\\.)" + namespaces.join("\\.(?:.*\\.|)") + "(\\.|$)") :
+                null;
+
+            // Clean up the event in case it is being reused
+            event.result = undefined;
+            if (!event.target) {
+                event.target = elem;
+            }
+
+            // Clone any incoming data and prepend the event, creating the handler arg list
+            data = data == null ?
+                [event] :
+                jQuery.makeArray(data, [event]);
+
+            // Allow special events to draw outside the lines
+            special = jQuery.event.special[type] || {};
+            if (!onlyHandlers && special.trigger && special.trigger.apply(elem, data) === false) {
+                return;
+            }
+
+            // Determine event propagation path in advance, per W3C events spec (#9951)
+            // Bubble up to document, then to window; watch for a global ownerDocument var (#9724)
+            if (!onlyHandlers && !special.noBubble && !isWindow(elem)) {
+
+                bubbleType = special.delegateType || type;
+                if (!rfocusMorph.test(bubbleType + type)) {
+                    cur = cur.parentNode;
+                }
+                for (; cur; cur = cur.parentNode) {
+                    eventPath.push(cur);
+                    tmp = cur;
+                }
+
+                // Only add window if we got to document (e.g., not plain obj or detached DOM)
+                if (tmp === (elem.ownerDocument || document$1)) {
+                    eventPath.push(tmp.defaultView || tmp.parentWindow || window);
+                }
+            }
+
+            // Fire handlers on the event path
+            i = 0;
+            while ((cur = eventPath[i++]) && !event.isPropagationStopped()) {
+                lastElement = cur;
+                event.type = i > 1 ?
+                    bubbleType :
+                    special.bindType || type;
+
+                // jQuery handler
+                handle = (dataPriv.get(cur, "events") || {})[event.type] &&
+                    dataPriv.get(cur, "handle");
+                if (handle) {
+                    handle.apply(cur, data);
+                }
+
+                // Native handler
+                handle = ontype && cur[ontype];
+                if (handle && handle.apply && acceptData(cur)) {
+                    event.result = handle.apply(cur, data);
+                    if (event.result === false) {
+                        event.preventDefault();
+                    }
+                }
+            }
+            event.type = type;
+
+            // If nobody prevented the default action, do it now
+            if (!onlyHandlers && !event.isDefaultPrevented()) {
+
+                if ((!special._default ||
+                    special._default.apply(eventPath.pop(), data) === false) &&
+                    acceptData(elem)) {
+
+                    // Call a native DOM method on the target with the same name as the event.
+                    // Don't do default actions on window, that's where global variables be (#6170)
+                    if (ontype && isFunction(elem[type]) && !isWindow(elem)) {
+
+                        // Don't re-trigger an onFOO event when we call its FOO() method
+                        tmp = elem[ontype];
+
+                        if (tmp) {
+                            elem[ontype] = null;
+                        }
+
+                        // Prevent re-triggering of the same event, since we already bubbled it above
+                        jQuery.event.triggered = type;
+
+                        if (event.isPropagationStopped()) {
+                            lastElement.addEventListener(type, stopPropagationCallback);
+                        }
+
+                        elem[type]();
+
+                        if (event.isPropagationStopped()) {
+                            lastElement.removeEventListener(type, stopPropagationCallback);
+                        }
+
+                        jQuery.event.triggered = undefined;
+
+                        if (tmp) {
+                            elem[ontype] = tmp;
+                        }
+                    }
+                }
+            }
+
+            return event.result;
+        },
+
+        // Piggyback on a donor event to simulate a different one
+        // Used only for `focus(in | out)` events
+        simulate: function (type, elem, event) {
+            var e = jQuery.extend(
+                new jQuery.Event(),
+                event,
+                {
+                    type: type,
+                    isSimulated: true
+                }
+            );
+
+            jQuery.event.trigger(e, null, elem);
+        }
+
+    });
+
+    jQuery.fn.extend({
+
+        trigger: function (type, data) {
+            return this.each(function () {
+                jQuery.event.trigger(type, data, this);
+            });
+        },
+        triggerHandler: function (type, data) {
+            var elem = this[0];
+            if (elem) {
+                return jQuery.event.trigger(type, data, elem, true);
+            }
+        }
+    });
+
+
+    // Support: Firefox <=44
+    // Firefox doesn't have focus(in | out) events
+    // Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787
+    //
+    // Support: Chrome <=48 - 49, Safari <=9.0 - 9.1
+    // focus(in | out) events fire after focus & blur events,
+    // which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order
+    // Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857
+    if (!support.focusin) {
+        jQuery.each({focus: "focusin", blur: "focusout"}, function (orig, fix) {
+
+            // Attach a single capturing handler on the document while someone wants focusin/focusout
+            var handler = function (event) {
+                jQuery.event.simulate(fix, event.target, jQuery.event.fix(event));
+            };
+
+            jQuery.event.special[fix] = {
+                setup: function () {
+                    var doc = this.ownerDocument || this,
+                        attaches = dataPriv.access(doc, fix);
+
+                    if (!attaches) {
+                        doc.addEventListener(orig, handler, true);
+                    }
+                    dataPriv.access(doc, fix, (attaches || 0) + 1);
+                },
+                teardown: function () {
+                    var doc = this.ownerDocument || this,
+                        attaches = dataPriv.access(doc, fix) - 1;
+
+                    if (!attaches) {
+                        doc.removeEventListener(orig, handler, true);
+                        dataPriv.remove(doc, fix);
+
+                    } else {
+                        dataPriv.access(doc, fix, attaches);
+                    }
+                }
+            };
+        });
+    }
+
+
+    var
+        rbracket = /\[\]$/,
+        rCRLF = /\r?\n/g,
+        rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,
+        rsubmittable = /^(?:input|select|textarea|keygen)/i;
+
+    function buildParams(prefix, obj, traditional, add) {
+        var name;
+
+        if (Array.isArray(obj)) {
+
+            // Serialize array item.
+            jQuery.each(obj, function (i, v) {
+                if (traditional || rbracket.test(prefix)) {
+
+                    // Treat each array item as a scalar.
+                    add(prefix, v);
+
+                } else {
+
+                    // Item is non-scalar (array or object), encode its numeric index.
+                    buildParams(
+                        prefix + "[" + (typeof v === "object" && v != null ? i : "") + "]",
+                        v,
+                        traditional,
+                        add
+                    );
+                }
+            });
+
+        } else if (!traditional && toType(obj) === "object") {
+
+            // Serialize object item.
+            for (name in obj) {
+                buildParams(prefix + "[" + name + "]", obj[name], traditional, add);
+            }
+
+        } else {
+
+            // Serialize scalar item.
+            add(prefix, obj);
+        }
+    }
+
+    // Serialize an array of form elements or a set of
+    // key/values into a query string
+    jQuery.param = function (a, traditional) {
+        var prefix,
+            s = [],
+            add = function (key, valueOrFunction) {
+
+                // If value is a function, invoke it and use its return value
+                var value = isFunction(valueOrFunction) ?
+                    valueOrFunction() :
+                    valueOrFunction;
+
+                s[s.length] = encodeURIComponent(key) + "=" +
+                    encodeURIComponent(value == null ? "" : value);
+            };
+
+        // If an array was passed in, assume that it is an array of form elements.
+        if (Array.isArray(a) || (a.jquery && !jQuery.isPlainObject(a))) {
+
+            // Serialize the form elements
+            jQuery.each(a, function () {
+                add(this.name, this.value);
+            });
+
+        } else {
+
+            // If traditional, encode the "old" way (the way 1.3.2 or older
+            // did it), otherwise encode params recursively.
+            for (prefix in a) {
+                buildParams(prefix, a[prefix], traditional, add);
+            }
+        }
+
+        // Return the resulting serialization
+        return s.join("&");
+    };
+
+    jQuery.fn.extend({
+        serialize: function () {
+            return jQuery.param(this.serializeArray());
+        },
+        serializeArray: function () {
+            return this.map(function () {
+
+                // Can add propHook for "elements" to filter or add form elements
+                var elements = jQuery.prop(this, "elements");
+                return elements ? jQuery.makeArray(elements) : this;
+            })
+                .filter(function () {
+                    var type = this.type;
+
+                    // Use .is( ":disabled" ) so that fieldset[disabled] works
+                    return this.name && !jQuery(this).is(":disabled") &&
+                        rsubmittable.test(this.nodeName) && !rsubmitterTypes.test(type) &&
+                        (this.checked || !rcheckableType.test(type));
+                })
+                .map(function (i, elem) {
+                    var val = jQuery(this).val();
+
+                    if (val == null) {
+                        return null;
+                    }
+
+                    if (Array.isArray(val)) {
+                        return jQuery.map(val, function (val) {
+                            return {name: elem.name, value: val.replace(rCRLF, "\r\n")};
+                        });
+                    }
+
+                    return {name: elem.name, value: val.replace(rCRLF, "\r\n")};
+                }).get();
+        }
+    });
+
+
+    jQuery.fn.extend({
+        wrapAll: function (html) {
+            var wrap;
+
+            if (this[0]) {
+                if (isFunction(html)) {
+                    html = html.call(this[0]);
+                }
+
+                // The elements to wrap the target around
+                wrap = jQuery(html, this[0].ownerDocument).eq(0).clone(true);
+
+                if (this[0].parentNode) {
+                    wrap.insertBefore(this[0]);
+                }
+
+                wrap.map(function () {
+                    var elem = this;
+
+                    while (elem.firstElementChild) {
+                        elem = elem.firstElementChild;
+                    }
+
+                    return elem;
+                }).append(this);
+            }
+
+            return this;
+        },
+
+        wrapInner: function (html) {
+            if (isFunction(html)) {
+                return this.each(function (i) {
+                    jQuery(this).wrapInner(html.call(this, i));
+                });
+            }
+
+            return this.each(function () {
+                var self = jQuery(this),
+                    contents = self.contents();
+
+                if (contents.length) {
+                    contents.wrapAll(html);
+
+                } else {
+                    self.append(html);
+                }
+            });
+        },
+
+        wrap: function (html) {
+            var htmlIsFunction = isFunction(html);
+
+            return this.each(function (i) {
+                jQuery(this).wrapAll(htmlIsFunction ? html.call(this, i) : html);
+            });
+        },
+
+        unwrap: function (selector) {
+            this.parent(selector).not("body").each(function () {
+                jQuery(this).replaceWith(this.childNodes);
+            });
+            return this;
+        }
+    });
+
+
+    jQuery.expr.pseudos.hidden = function (elem) {
+        return !jQuery.expr.pseudos.visible(elem);
+    };
+    jQuery.expr.pseudos.visible = function (elem) {
+        return !!(elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length);
+    };
+
+
+    // Support: Safari 8 only
+    // In Safari 8 documents created via document.implementation.createHTMLDocument
+    // collapse sibling forms: the second one becomes a child of the first one.
+    // Because of that, this security measure has to be disabled in Safari 8.
+    // https://bugs.webkit.org/show_bug.cgi?id=137337
+    support.createHTMLDocument = (function () {
+        var body = document$1.implementation.createHTMLDocument("").body;
+        body.innerHTML = "<form></form><form></form>";
+        return body.childNodes.length === 2;
+    })();
+
+
+    // Argument "data" should be string of html
+    // context (optional): If specified, the fragment will be created in this context,
+    // defaults to document
+    // keepScripts (optional): If true, will include scripts passed in the html string
+    jQuery.parseHTML = function (data, context, keepScripts) {
+        if (typeof data !== "string") {
+            return [];
+        }
+        if (typeof context === "boolean") {
+            keepScripts = context;
+            context = false;
+        }
+
+        var base, parsed, scripts;
+
+        if (!context) {
+
+            // Stop scripts or inline event handlers from being executed immediately
+            // by using document.implementation
+            if (support.createHTMLDocument) {
+                context = document$1.implementation.createHTMLDocument("");
+
+                // Set the base href for the created document
+                // so any parsed elements with URLs
+                // are based on the document's URL (gh-2965)
+                base = context.createElement("base");
+                base.href = document$1.location.href;
+                context.head.appendChild(base);
+            } else {
+                context = document$1;
+            }
+        }
+
+        parsed = rsingleTag.exec(data);
+        scripts = !keepScripts && [];
+
+        // Single tag
+        if (parsed) {
+            return [context.createElement(parsed[1])];
+        }
+
+        parsed = buildFragment([data], context, scripts);
+
+        if (scripts && scripts.length) {
+            jQuery(scripts).remove();
+        }
+
+        return jQuery.merge([], parsed.childNodes);
+    };
+
+
+    jQuery.offset = {
+        setOffset: function (elem, options, i) {
+            var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,
+                position = jQuery.css(elem, "position"),
+                curElem = jQuery(elem),
+                props = {};
+
+            // Set position first, in-case top/left are set even on static elem
+            if (position === "static") {
+                elem.style.position = "relative";
+            }
+
+            curOffset = curElem.offset();
+            curCSSTop = jQuery.css(elem, "top");
+            curCSSLeft = jQuery.css(elem, "left");
+            calculatePosition = (position === "absolute" || position === "fixed") &&
+                (curCSSTop + curCSSLeft).indexOf("auto") > -1;
+
+            // Need to be able to calculate position if either
+            // top or left is auto and position is either absolute or fixed
+            if (calculatePosition) {
+                curPosition = curElem.position();
+                curTop = curPosition.top;
+                curLeft = curPosition.left;
+
+            } else {
+                curTop = parseFloat(curCSSTop) || 0;
+                curLeft = parseFloat(curCSSLeft) || 0;
+            }
+
+            if (isFunction(options)) {
+
+                // Use jQuery.extend here to allow modification of coordinates argument (gh-1848)
+                options = options.call(elem, i, jQuery.extend({}, curOffset));
+            }
+
+            if (options.top != null) {
+                props.top = (options.top - curOffset.top) + curTop;
+            }
+            if (options.left != null) {
+                props.left = (options.left - curOffset.left) + curLeft;
+            }
+
+            if ("using" in options) {
+                options.using.call(elem, props);
+
+            } else {
+                curElem.css(props);
+            }
+        }
+    };
+
+    jQuery.fn.extend({
+
+        // offset() relates an element's border box to the document origin
+        offset: function (options) {
+
+            // Preserve chaining for setter
+            if (arguments.length) {
+                return options === undefined ?
+                    this :
+                    this.each(function (i) {
+                        jQuery.offset.setOffset(this, options, i);
+                    });
+            }
+
+            var rect, win,
+                elem = this[0];
+
+            if (!elem) {
+                return;
+            }
+
+            // Return zeros for disconnected and hidden (display: none) elements (gh-2310)
+            // Support: IE <=11 only
+            // Running getBoundingClientRect on a
+            // disconnected node in IE throws an error
+            if (!elem.getClientRects().length) {
+                return {top: 0, left: 0};
+            }
+
+            // Get document-relative position by adding viewport scroll to viewport-relative gBCR
+            rect = elem.getBoundingClientRect();
+            win = elem.ownerDocument.defaultView;
+            return {
+                top: rect.top + win.pageYOffset,
+                left: rect.left + win.pageXOffset
+            };
+        },
+
+        // position() relates an element's margin box to its offset parent's padding box
+        // This corresponds to the behavior of CSS absolute positioning
+        position: function () {
+            if (!this[0]) {
+                return;
+            }
+
+            var offsetParent, offset, doc,
+                elem = this[0],
+                parentOffset = {top: 0, left: 0};
+
+            // position:fixed elements are offset from the viewport, which itself always has zero offset
+            if (jQuery.css(elem, "position") === "fixed") {
+
+                // Assume position:fixed implies availability of getBoundingClientRect
+                offset = elem.getBoundingClientRect();
+
+            } else {
+                offset = this.offset();
+
+                // Account for the *real* offset parent, which can be the document or its root element
+                // when a statically positioned element is identified
+                doc = elem.ownerDocument;
+                offsetParent = elem.offsetParent || doc.documentElement;
+                while (offsetParent &&
+                (offsetParent === doc.body || offsetParent === doc.documentElement) &&
+                jQuery.css(offsetParent, "position") === "static") {
+
+                    offsetParent = offsetParent.parentNode;
+                }
+                if (offsetParent && offsetParent !== elem && offsetParent.nodeType === 1) {
+
+                    // Incorporate borders into its offset, since they are outside its content origin
+                    parentOffset = jQuery(offsetParent).offset();
+                    parentOffset.top += jQuery.css(offsetParent, "borderTopWidth", true);
+                    parentOffset.left += jQuery.css(offsetParent, "borderLeftWidth", true);
+                }
+            }
+
+            // Subtract parent offsets and element margins
+            return {
+                top: offset.top - parentOffset.top - jQuery.css(elem, "marginTop", true),
+                left: offset.left - parentOffset.left - jQuery.css(elem, "marginLeft", true)
+            };
+        },
+
+        // This method will return documentElement in the following cases:
+        // 1) For the element inside the iframe without offsetParent, this method will return
+        //    documentElement of the parent window
+        // 2) For the hidden or detached element
+        // 3) For body or html element, i.e. in case of the html node - it will return itself
+        //
+        // but those exceptions were never presented as a real life use-cases
+        // and might be considered as more preferable results.
+        //
+        // This logic, however, is not guaranteed and can change at any point in the future
+        offsetParent: function () {
+            return this.map(function () {
+                var offsetParent = this.offsetParent;
+
+                while (offsetParent && jQuery.css(offsetParent, "position") === "static") {
+                    offsetParent = offsetParent.offsetParent;
+                }
+
+                return offsetParent || documentElement;
+            });
+        }
+    });
+
+    // Create scrollLeft and scrollTop methods
+    jQuery.each({scrollLeft: "pageXOffset", scrollTop: "pageYOffset"}, function (method, prop) {
+        var top = "pageYOffset" === prop;
+
+        jQuery.fn[method] = function (val) {
+            return access(this, function (elem, method, val) {
+
+                // Coalesce documents and windows
+                var win;
+                if (isWindow(elem)) {
+                    win = elem;
+                } else if (elem.nodeType === 9) {
+                    win = elem.defaultView;
+                }
+
+                if (val === undefined) {
+                    return win ? win[prop] : elem[method];
+                }
+
+                if (win) {
+                    win.scrollTo(
+                        !top ? val : win.pageXOffset,
+                        top ? val : win.pageYOffset
+                    );
+
+                } else {
+                    elem[method] = val;
+                }
+            }, method, val, arguments.length);
+        };
+    });
+
+    // Support: Safari <=7 - 9.1, Chrome <=37 - 49
+    // Add the top/left cssHooks using jQuery.fn.position
+    // Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084
+    // Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=589347
+    // getComputedStyle returns percent when specified for top/left/bottom/right;
+    // rather than make the css module depend on the offset module, just check for it here
+    jQuery.each(["top", "left"], function (i, prop) {
+        jQuery.cssHooks[prop] = addGetHookIf(support.pixelPosition,
+            function (elem, computed) {
+                if (computed) {
+                    computed = curCSS(elem, prop);
+
+                    // If curCSS returns percentage, fallback to offset
+                    return rnumnonpx.test(computed) ?
+                        jQuery(elem).position()[prop] + "px" :
+                        computed;
+                }
+            }
+        );
+    });
+
+
+    // Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods
+    jQuery.each({Height: "height", Width: "width"}, function (name, type) {
+        jQuery.each({padding: "inner" + name, content: type, "": "outer" + name},
+            function (defaultExtra, funcName) {
+
+                // Margin is only for outerHeight, outerWidth
+                jQuery.fn[funcName] = function (margin, value) {
+                    var chainable = arguments.length && (defaultExtra || typeof margin !== "boolean"),
+                        extra = defaultExtra || (margin === true || value === true ? "margin" : "border");
+
+                    return access(this, function (elem, type, value) {
+                        var doc;
+
+                        if (isWindow(elem)) {
+
+                            // $( window ).outerWidth/Height return w/h including scrollbars (gh-1729)
+                            return funcName.indexOf("outer") === 0 ?
+                                elem["inner" + name] :
+                                elem.document.documentElement["client" + name];
+                        }
+
+                        // Get document width or height
+                        if (elem.nodeType === 9) {
+                            doc = elem.documentElement;
+
+                            // Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],
+                            // whichever is greatest
+                            return Math.max(
+                                elem.body["scroll" + name], doc["scroll" + name],
+                                elem.body["offset" + name], doc["offset" + name],
+                                doc["client" + name]
+                            );
+                        }
+
+                        return value === undefined ?
+
+                            // Get width or height on the element, requesting but not forcing parseFloat
+                            jQuery.css(elem, type, extra) :
+
+                            // Set width or height on the element
+                            jQuery.style(elem, type, value, extra);
+                    }, type, chainable ? margin : undefined, chainable);
+                };
+            });
+    });
+
+
+    jQuery.each(("blur focus focusin focusout resize scroll click dblclick " +
+        "mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave " +
+        "change select submit keydown keypress keyup contextmenu").split(" "),
+        function (i, name) {
+
+            // Handle event binding
+            jQuery.fn[name] = function (data, fn) {
+                return arguments.length > 0 ?
+                    this.on(name, null, data, fn) :
+                    this.trigger(name);
+            };
+        });
+
+    jQuery.fn.extend({
+        hover: function (fnOver, fnOut) {
+            return this.mouseenter(fnOver).mouseleave(fnOut || fnOver);
+        }
+    });
+
+
+    jQuery.fn.extend({
+
+        bind: function (types, data, fn) {
+            return this.on(types, null, data, fn);
+        },
+        unbind: function (types, fn) {
+            return this.off(types, null, fn);
+        },
+
+        delegate: function (selector, types, data, fn) {
+            return this.on(types, selector, data, fn);
+        },
+        undelegate: function (selector, types, fn) {
+
+            // ( namespace ) or ( selector, types [, fn] )
+            return arguments.length === 1 ?
+                this.off(selector, "**") :
+                this.off(types, selector || "**", fn);
+        }
+    });
+
+    // Bind a function to a context, optionally partially applying any
+    // arguments.
+    // jQuery.proxy is deprecated to promote standards (specifically Function#bind)
+    // However, it is not slated for removal any time soon
+    jQuery.proxy = function (fn, context) {
+        var tmp, args, proxy;
+
+        if (typeof context === "string") {
+            tmp = fn[context];
+            context = fn;
+            fn = tmp;
+        }
+
+        // Quick check to determine if target is callable, in the spec
+        // this throws a TypeError, but we will just return undefined.
+        if (!isFunction(fn)) {
+            return undefined;
+        }
+
+        // Simulated bind
+        args = slice.call(arguments, 2);
+        proxy = function () {
+            return fn.apply(context || this, args.concat(slice.call(arguments)));
+        };
+
+        // Set the guid of unique handler to the same of original handler, so it can be removed
+        proxy.guid = fn.guid = fn.guid || jQuery.guid++;
+
+        return proxy;
+    };
+
+    jQuery.holdReady = function (hold) {
+        if (hold) {
+            jQuery.readyWait++;
+        } else {
+            jQuery.ready(true);
+        }
+    };
+    jQuery.isArray = Array.isArray;
+    jQuery.parseJSON = JSON.parse;
+    jQuery.nodeName = nodeName;
+    jQuery.isFunction = isFunction;
+    jQuery.isWindow = isWindow;
+    jQuery.camelCase = camelCase;
+    jQuery.type = toType;
+
+    jQuery.now = Date.now;
+
+    jQuery.isNumeric = function (obj) {
+
+        // As of jQuery 3.0, isNumeric is limited to
+        // strings and numbers (primitives or objects)
+        // that can be coerced to finite numbers (gh-2662)
+        var type = jQuery.type(obj);
+        return (type === "number" || type === "string") &&
+
+            // parseFloat NaNs numeric-cast false positives ("")
+            // ...but misinterprets leading-number strings, particularly hex literals ("0x...")
+            // subtraction forces infinities to NaN
+            !isNaN(obj - parseFloat(obj));
+    };
+
+    const $$1 = jQuery;
+
+    function div(options) {
+        return create$1("div", options);
+    }
+
+    function create$1(tag, options) {
+        const elem = document.createElement(tag);
+        if (options) {
+            if (options.class) {
+                elem.classList.add(options.class);
+            }
+            if (options.id) {
+                elem.id = options.id;
+            }
+            if(options.style) {
+                applyStyle(elem, options.style);
+            }
+        }
+        return elem;
+    }
+
+    function hide(elem) {
+        const cssStyle = getComputedStyle(elem);
+        if(cssStyle.display !== "none") {
+            elem._initialDisplay = cssStyle.display;
+        }
+        elem.style.display = "none";
+    }
+
+    function show(elem) {
+        const currentDisplay = getComputedStyle(elem).display;
+        if (currentDisplay === "none") {
+            const d = elem._initialDisplay || "block";
+            elem.style.display = d;
+        }
+    }
+
+    function hideAll(selector) {
+        document.querySelectorAll(selector).forEach(elem => { hide(elem); });
+    }
+
+    function empty(elem) {
+        while(elem.firstChild){
+            elem.removeChild(elem.firstChild);
+        }
+    }
+
+    function offset(elem) {
+        // Return zeros for disconnected and hidden (display: none) elements (gh-2310)
+        // Support: IE <=11 only
+        // Running getBoundingClientRect on a
+        // disconnected node in IE throws an error
+        if (!elem.getClientRects().length) {
+            return {top: 0, left: 0};
+        }
+
+        // Get document-relative position by adding viewport scroll to viewport-relative gBCR
+        const rect = elem.getBoundingClientRect();
+        const win = elem.ownerDocument.defaultView;
+        return {
+            top: rect.top + win.pageYOffset,
+            left: rect.left + win.pageXOffset
+        };
+    }
+
+    function pageCoordinates(e) {
+
+        if (e.type.startsWith("touch")) {
+            const touch = e.touches[0];
+            return {x: touch.pageX, y: touch.pageY};
+        } else {
+            return {x: e.pageX, y: e.pageY}
+        }
+    }
+
+    const relativeDOMBBox = (parentElement, childElement) => {
+        const { x: x_p, y: y_p, width: width_p, height: height_p } = parentElement.getBoundingClientRect();
+        const { x: x_c, y: y_c, width: width_c, height: height_c } = childElement.getBoundingClientRect();
+        return { x: (x_c - x_p), y: (y_c - y_p), width: width_c, height:height_c };
+    };
+
+    function applyStyle(elem, style) {
+        for (let key of Object.keys(style)) {
+            elem.style[key] = style[key];
+        }
+    }
+
+    function guid$2  () {
+        return ("0000" + (Math.random() * Math.pow(36, 4) << 0).toString(36)).slice(-4);
+    }
+
+    let getMouseXY = (domElement, { clientX, clientY }) => {
+
+        // DOMRect object with eight properties: left, top, right, bottom, x, y, width, height
+        const { left, top, width, height } = domElement.getBoundingClientRect();
+
+        const x = clientX - left;
+        const y = clientY - top;
+        return { x, y, xNormalized: x/width, yNormalized: y/height, width, height };
+
+    };
+
+    /**
+     * Translate the mouse coordinates for the event to the coordinates for the given target element
+     * @param event
+     * @param domElement
+     * @returns {{x: number, y: number}}
+     */
+    function translateMouseCoordinates(event, domElement) {
+
+        const { clientX, clientY } = event;
+        return getMouseXY(domElement, { clientX, clientY });
+
+    }
+
+    var domUtils = /*#__PURE__*/Object.freeze({
+        __proto__: null,
+        applyStyle: applyStyle,
+        create: create$1,
+        div: div,
+        empty: empty,
+        guid: guid$2,
+        hide: hide,
+        hideAll: hideAll,
+        offset: offset,
+        pageCoordinates: pageCoordinates,
+        relativeDOMBBox: relativeDOMBBox,
+        show: show,
+        translateMouseCoordinates: translateMouseCoordinates
+    });
+
+    /*! @license DOMPurify 3.0.5 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.0.5/LICENSE */
+
+    const {
+      entries,
+      setPrototypeOf,
+      isFrozen,
+      getPrototypeOf,
+      getOwnPropertyDescriptor
+    } = Object;
+    let {
+      freeze,
+      seal,
+      create
+    } = Object; // eslint-disable-line import/no-mutable-exports
+
+    let {
+      apply,
+      construct
+    } = typeof Reflect !== 'undefined' && Reflect;
+
+    if (!apply) {
+      apply = function apply(fun, thisValue, args) {
+        return fun.apply(thisValue, args);
+      };
+    }
+
+    if (!freeze) {
+      freeze = function freeze(x) {
+        return x;
+      };
+    }
+
+    if (!seal) {
+      seal = function seal(x) {
+        return x;
+      };
+    }
+
+    if (!construct) {
+      construct = function construct(Func, args) {
+        return new Func(...args);
+      };
+    }
+
+    const arrayForEach = unapply(Array.prototype.forEach);
+    const arrayPop = unapply(Array.prototype.pop);
+    const arrayPush = unapply(Array.prototype.push);
+    const stringToLowerCase = unapply(String.prototype.toLowerCase);
+    const stringToString = unapply(String.prototype.toString);
+    const stringMatch = unapply(String.prototype.match);
+    const stringReplace = unapply(String.prototype.replace);
+    const stringIndexOf = unapply(String.prototype.indexOf);
+    const stringTrim = unapply(String.prototype.trim);
+    const regExpTest = unapply(RegExp.prototype.test);
+    const typeErrorCreate = unconstruct(TypeError);
+    function unapply(func) {
+      return function (thisArg) {
+        for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+          args[_key - 1] = arguments[_key];
+        }
+
+        return apply(func, thisArg, args);
+      };
+    }
+    function unconstruct(func) {
+      return function () {
+        for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {
+          args[_key2] = arguments[_key2];
+        }
+
+        return construct(func, args);
+      };
+    }
+    /* Add properties to a lookup table */
+
+    function addToSet(set, array, transformCaseFunc) {
+      var _transformCaseFunc;
+
+      transformCaseFunc = (_transformCaseFunc = transformCaseFunc) !== null && _transformCaseFunc !== void 0 ? _transformCaseFunc : stringToLowerCase;
+
+      if (setPrototypeOf) {
+        // Make 'in' and truthy checks like Boolean(set.constructor)
+        // independent of any properties defined on Object.prototype.
+        // Prevent prototype setters from intercepting set as a this value.
+        setPrototypeOf(set, null);
+      }
+
+      let l = array.length;
+
+      while (l--) {
+        let element = array[l];
+
+        if (typeof element === 'string') {
+          const lcElement = transformCaseFunc(element);
+
+          if (lcElement !== element) {
+            // Config presets (e.g. tags.js, attrs.js) are immutable.
+            if (!isFrozen(array)) {
+              array[l] = lcElement;
+            }
+
+            element = lcElement;
+          }
+        }
+
+        set[element] = true;
+      }
+
+      return set;
+    }
+    /* Shallow clone an object */
+
+    function clone(object) {
+      const newObject = create(null);
+
+      for (const [property, value] of entries(object)) {
+        newObject[property] = value;
+      }
+
+      return newObject;
+    }
+    /* This method automatically checks if the prop is function
+     * or getter and behaves accordingly. */
+
+    function lookupGetter(object, prop) {
+      while (object !== null) {
+        const desc = getOwnPropertyDescriptor(object, prop);
+
+        if (desc) {
+          if (desc.get) {
+            return unapply(desc.get);
+          }
+
+          if (typeof desc.value === 'function') {
+            return unapply(desc.value);
+          }
+        }
+
+        object = getPrototypeOf(object);
+      }
+
+      function fallbackValue(element) {
+        console.warn('fallback value for', element);
+        return null;
+      }
+
+      return fallbackValue;
+    }
+
+    const html$1 = freeze(['a', 'abbr', 'acronym', 'address', 'area', 'article', 'aside', 'audio', 'b', 'bdi', 'bdo', 'big', 'blink', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'center', 'cite', 'code', 'col', 'colgroup', 'content', 'data', 'datalist', 'dd', 'decorator', 'del', 'details', 'dfn', 'dialog', 'dir', 'div', 'dl', 'dt', 'element', 'em', 'fieldset', 'figcaption', 'figure', 'font', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'i', 'img', 'input', 'ins', 'kbd', 'label', 'legend', 'li', 'main', 'map', 'mark', 'marquee', 'menu', 'menuitem', 'meter', 'nav', 'nobr', 'ol', 'optgroup', 'option', 'output', 'p', 'picture', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'section', 'select', 'shadow', 'small', 'source', 'spacer', 'span', 'strike', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'time', 'tr', 'track', 'tt', 'u', 'ul', 'var', 'video', 'wbr']); // SVG
+
+    const svg$1 = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'view', 'vkern']);
+    const svgFilters = freeze(['feBlend', 'feColorMatrix', 'feComponentTransfer', 'feComposite', 'feConvolveMatrix', 'feDiffuseLighting', 'feDisplacementMap', 'feDistantLight', 'feDropShadow', 'feFlood', 'feFuncA', 'feFuncB', 'feFuncG', 'feFuncR', 'feGaussianBlur', 'feImage', 'feMerge', 'feMergeNode', 'feMorphology', 'feOffset', 'fePointLight', 'feSpecularLighting', 'feSpotLight', 'feTile', 'feTurbulence']); // List of SVG elements that are disallowed by default.
+    // We still need to know them so that we can do namespace
+    // checks properly in case one wants to add them to
+    // allow-list.
+
+    const svgDisallowed = freeze(['animate', 'color-profile', 'cursor', 'discard', 'font-face', 'font-face-format', 'font-face-name', 'font-face-src', 'font-face-uri', 'foreignobject', 'hatch', 'hatchpath', 'mesh', 'meshgradient', 'meshpatch', 'meshrow', 'missing-glyph', 'script', 'set', 'solidcolor', 'unknown', 'use']);
+    const mathMl$1 = freeze(['math', 'menclose', 'merror', 'mfenced', 'mfrac', 'mglyph', 'mi', 'mlabeledtr', 'mmultiscripts', 'mn', 'mo', 'mover', 'mpadded', 'mphantom', 'mroot', 'mrow', 'ms', 'mspace', 'msqrt', 'mstyle', 'msub', 'msup', 'msubsup', 'mtable', 'mtd', 'mtext', 'mtr', 'munder', 'munderover', 'mprescripts']); // Similarly to SVG, we want to know all MathML elements,
+    // even those that we disallow by default.
+
+    const mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']);
+    const text = freeze(['#text']);
+
+    const html = freeze(['accept', 'action', 'align', 'alt', 'autocapitalize', 'autocomplete', 'autopictureinpicture', 'autoplay', 'background', 'bgcolor', 'border', 'capture', 'cellpadding', 'cellspacing', 'checked', 'cite', 'class', 'clear', 'color', 'cols', 'colspan', 'controls', 'controlslist', 'coords', 'crossorigin', 'datetime', 'decoding', 'default', 'dir', 'disabled', 'disablepictureinpicture', 'disableremoteplayback', 'download', 'draggable', 'enctype', 'enterkeyhint', 'face', 'for', 'headers', 'height', 'hidden', 'high', 'href', 'hreflang', 'id', 'inputmode', 'integrity', 'ismap', 'kind', 'label', 'lang', 'list', 'loading', 'loop', 'low', 'max', 'maxlength', 'media', 'method', 'min', 'minlength', 'multiple', 'muted', 'name', 'nonce', 'noshade', 'novalidate', 'nowrap', 'open', 'optimum', 'pattern', 'placeholder', 'playsinline', 'poster', 'preload', 'pubdate', 'radiogroup', 'readonly', 'rel', 'required', 'rev', 'reversed', 'role', 'rows', 'rowspan', 'spellcheck', 'scope', 'selected', 'shape', 'size', 'sizes', 'span', 'srclang', 'start', 'src', 'srcset', 'step', 'style', 'summary', 'tabindex', 'title', 'translate', 'type', 'usemap', 'valign', 'value', 'width', 'xmlns', 'slot']);
+    const svg = freeze(['accent-height', 'accumulate', 'additive', 'alignment-baseline', 'ascent', 'attributename', 'attributetype', 'azimuth', 'basefrequency', 'baseline-shift', 'begin', 'bias', 'by', 'class', 'clip', 'clippathunits', 'clip-path', 'clip-rule', 'color', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'cx', 'cy', 'd', 'dx', 'dy', 'diffuseconstant', 'direction', 'display', 'divisor', 'dur', 'edgemode', 'elevation', 'end', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'filterunits', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'fx', 'fy', 'g1', 'g2', 'glyph-name', 'glyphref', 'gradientunits', 'gradienttransform', 'height', 'href', 'id', 'image-rendering', 'in', 'in2', 'k', 'k1', 'k2', 'k3', 'k4', 'kerning', 'keypoints', 'keysplines', 'keytimes', 'lang', 'lengthadjust', 'letter-spacing', 'kernelmatrix', 'kernelunitlength', 'lighting-color', 'local', 'marker-end', 'marker-mid', 'marker-start', 'markerheight', 'markerunits', 'markerwidth', 'maskcontentunits', 'maskunits', 'max', 'mask', 'media', 'method', 'mode', 'min', 'name', 'numoctaves', 'offset', 'operator', 'opacity', 'order', 'orient', 'orientation', 'origin', 'overflow', 'paint-order', 'path', 'pathlength', 'patterncontentunits', 'patterntransform', 'patternunits', 'points', 'preservealpha', 'preserveaspectratio', 'primitiveunits', 'r', 'rx', 'ry', 'radius', 'refx', 'refy', 'repeatcount', 'repeatdur', 'restart', 'result', 'rotate', 'scale', 'seed', 'shape-rendering', 'specularconstant', 'specularexponent', 'spreadmethod', 'startoffset', 'stddeviation', 'stitchtiles', 'stop-color', 'stop-opacity', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke', 'stroke-width', 'style', 'surfacescale', 'systemlanguage', 'tabindex', 'targetx', 'targety', 'transform', 'transform-origin', 'text-anchor', 'text-decoration', 'text-rendering', 'textlength', 'type', 'u1', 'u2', 'unicode', 'values', 'viewbox', 'visibility', 'version', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'width', 'word-spacing', 'wrap', 'writing-mode', 'xchannelselector', 'ychannelselector', 'x', 'x1', 'x2', 'xmlns', 'y', 'y1', 'y2', 'z', 'zoomandpan']);
+    const mathMl = freeze(['accent', 'accentunder', 'align', 'bevelled', 'close', 'columnsalign', 'columnlines', 'columnspan', 'denomalign', 'depth', 'dir', 'display', 'displaystyle', 'encoding', 'fence', 'frame', 'height', 'href', 'id', 'largeop', 'length', 'linethickness', 'lspace', 'lquote', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant', 'maxsize', 'minsize', 'movablelimits', 'notation', 'numalign', 'open', 'rowalign', 'rowlines', 'rowspacing', 'rowspan', 'rspace', 'rquote', 'scriptlevel', 'scriptminsize', 'scriptsizemultiplier', 'selection', 'separator', 'separators', 'stretchy', 'subscriptshift', 'supscriptshift', 'symmetric', 'voffset', 'width', 'xmlns']);
+    const xml = freeze(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']);
+
+    const MUSTACHE_EXPR = seal(/\{\{[\w\W]*|[\w\W]*\}\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode
+
+    const ERB_EXPR = seal(/<%[\w\W]*|[\w\W]*%>/gm);
+    const TMPLIT_EXPR = seal(/\${[\w\W]*}/gm);
+    const DATA_ATTR = seal(/^data-[\-\w.\u00B7-\uFFFF]/); // eslint-disable-line no-useless-escape
+
+    const ARIA_ATTR = seal(/^aria-[\-\w]+$/); // eslint-disable-line no-useless-escape
+
+    const IS_ALLOWED_URI = seal(/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp):|[^a-z]|[a-z+.\-]+(?:[^a-z+.\-:]|$))/i // eslint-disable-line no-useless-escape
+    );
+    const IS_SCRIPT_OR_DATA = seal(/^(?:\w+script|data):/i);
+    const ATTR_WHITESPACE = seal(/[\u0000-\u0020\u00A0\u1680\u180E\u2000-\u2029\u205F\u3000]/g // eslint-disable-line no-control-regex
+    );
+    const DOCTYPE_NAME = seal(/^html$/i);
+
+    var EXPRESSIONS = /*#__PURE__*/Object.freeze({
+      __proto__: null,
+      MUSTACHE_EXPR: MUSTACHE_EXPR,
+      ERB_EXPR: ERB_EXPR,
+      TMPLIT_EXPR: TMPLIT_EXPR,
+      DATA_ATTR: DATA_ATTR,
+      ARIA_ATTR: ARIA_ATTR,
+      IS_ALLOWED_URI: IS_ALLOWED_URI,
+      IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA,
+      ATTR_WHITESPACE: ATTR_WHITESPACE,
+      DOCTYPE_NAME: DOCTYPE_NAME
+    });
+
+    const getGlobal = () => typeof window === 'undefined' ? null : window;
+    /**
+     * Creates a no-op policy for internal use only.
+     * Don't export this function outside this module!
+     * @param {?TrustedTypePolicyFactory} trustedTypes The policy factory.
+     * @param {HTMLScriptElement} purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).
+     * @return {?TrustedTypePolicy} The policy created (or null, if Trusted Types
+     * are not supported or creating the policy failed).
+     */
+
+
+    const _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) {
+      if (typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function') {
+        return null;
+      } // Allow the callers to control the unique policy name
+      // by adding a data-tt-policy-suffix to the script element with the DOMPurify.
+      // Policy creation with duplicate names throws in Trusted Types.
+
+
+      let suffix = null;
+      const ATTR_NAME = 'data-tt-policy-suffix';
+
+      if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {
+        suffix = purifyHostElement.getAttribute(ATTR_NAME);
+      }
+
+      const policyName = 'dompurify' + (suffix ? '#' + suffix : '');
+
+      try {
+        return trustedTypes.createPolicy(policyName, {
+          createHTML(html) {
+            return html;
+          },
+
+          createScriptURL(scriptUrl) {
+            return scriptUrl;
+          }
+
+        });
+      } catch (_) {
+        // Policy creation failed (most likely another DOMPurify script has
+        // already run). Skip creating the policy, as this will only cause errors
+        // if TT are enforced.
+        console.warn('TrustedTypes policy ' + policyName + ' could not be created.');
+        return null;
+      }
+    };
+
+    function createDOMPurify() {
+      let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal();
+
+      const DOMPurify = root => createDOMPurify(root);
+      /**
+       * Version label, exposed for easier checks
+       * if DOMPurify is up to date or not
+       */
+
+
+      DOMPurify.version = '3.0.5';
+      /**
+       * Array of elements that DOMPurify removed during sanitation.
+       * Empty if nothing was removed.
+       */
+
+      DOMPurify.removed = [];
+
+      if (!window || !window.document || window.document.nodeType !== 9) {
+        // Not running in a browser, provide a factory function
+        // so that you can pass your own Window
+        DOMPurify.isSupported = false;
+        return DOMPurify;
+      }
+
+      const originalDocument = window.document;
+      const currentScript = originalDocument.currentScript;
+      let {
+        document
+      } = window;
+      const {
+        DocumentFragment,
+        HTMLTemplateElement,
+        Node,
+        Element,
+        NodeFilter,
+        NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap,
+        HTMLFormElement,
+        DOMParser,
+        trustedTypes
+      } = window;
+      const ElementPrototype = Element.prototype;
+      const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');
+      const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');
+      const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');
+      const getParentNode = lookupGetter(ElementPrototype, 'parentNode'); // As per issue #47, the web-components registry is inherited by a
+      // new document created via createHTMLDocument. As per the spec
+      // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)
+      // a new empty registry is used when creating a template contents owner
+      // document, so we use that as our parent document to ensure nothing
+      // is inherited.
+
+      if (typeof HTMLTemplateElement === 'function') {
+        const template = document.createElement('template');
+
+        if (template.content && template.content.ownerDocument) {
+          document = template.content.ownerDocument;
+        }
+      }
+
+      let trustedTypesPolicy;
+      let emptyHTML = '';
+      const {
+        implementation,
+        createNodeIterator,
+        createDocumentFragment,
+        getElementsByTagName
+      } = document;
+      const {
+        importNode
+      } = originalDocument;
+      let hooks = {};
+      /**
+       * Expose whether this browser supports running the full DOMPurify.
+       */
+
+      DOMPurify.isSupported = typeof entries === 'function' && typeof getParentNode === 'function' && implementation && implementation.createHTMLDocument !== undefined;
+      const {
+        MUSTACHE_EXPR,
+        ERB_EXPR,
+        TMPLIT_EXPR,
+        DATA_ATTR,
+        ARIA_ATTR,
+        IS_SCRIPT_OR_DATA,
+        ATTR_WHITESPACE
+      } = EXPRESSIONS;
+      let {
+        IS_ALLOWED_URI: IS_ALLOWED_URI$1
+      } = EXPRESSIONS;
+      /**
+       * We consider the elements and attributes below to be safe. Ideally
+       * don't add any new ones but feel free to remove unwanted ones.
+       */
+
+      /* allowed element names */
+
+      let ALLOWED_TAGS = null;
+      const DEFAULT_ALLOWED_TAGS = addToSet({}, [...html$1, ...svg$1, ...svgFilters, ...mathMl$1, ...text]);
+      /* Allowed attribute names */
+
+      let ALLOWED_ATTR = null;
+      const DEFAULT_ALLOWED_ATTR = addToSet({}, [...html, ...svg, ...mathMl, ...xml]);
+      /*
+       * Configure how DOMPUrify should handle custom elements and their attributes as well as customized built-in elements.
+       * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)
+       * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)
+       * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.
+       */
+
+      let CUSTOM_ELEMENT_HANDLING = Object.seal(Object.create(null, {
+        tagNameCheck: {
+          writable: true,
+          configurable: false,
+          enumerable: true,
+          value: null
+        },
+        attributeNameCheck: {
+          writable: true,
+          configurable: false,
+          enumerable: true,
+          value: null
+        },
+        allowCustomizedBuiltInElements: {
+          writable: true,
+          configurable: false,
+          enumerable: true,
+          value: false
+        }
+      }));
+      /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */
+
+      let FORBID_TAGS = null;
+      /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */
+
+      let FORBID_ATTR = null;
+      /* Decide if ARIA attributes are okay */
+
+      let ALLOW_ARIA_ATTR = true;
+      /* Decide if custom data attributes are okay */
+
+      let ALLOW_DATA_ATTR = true;
+      /* Decide if unknown protocols are okay */
+
+      let ALLOW_UNKNOWN_PROTOCOLS = false;
+      /* Decide if self-closing tags in attributes are allowed.
+       * Usually removed due to a mXSS issue in jQuery 3.0 */
+
+      let ALLOW_SELF_CLOSE_IN_ATTR = true;
+      /* Output should be safe for common template engines.
+       * This means, DOMPurify removes data attributes, mustaches and ERB
+       */
+
+      let SAFE_FOR_TEMPLATES = false;
+      /* Decide if document with <html>... should be returned */
+
+      let WHOLE_DOCUMENT = false;
+      /* Track whether config is already set on this instance of DOMPurify. */
+
+      let SET_CONFIG = false;
+      /* Decide if all elements (e.g. style, script) must be children of
+       * document.body. By default, browsers might move them to document.head */
+
+      let FORCE_BODY = false;
+      /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html
+       * string (or a TrustedHTML object if Trusted Types are supported).
+       * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead
+       */
+
+      let RETURN_DOM = false;
+      /* Decide if a DOM `DocumentFragment` should be returned, instead of a html
+       * string  (or a TrustedHTML object if Trusted Types are supported) */
+
+      let RETURN_DOM_FRAGMENT = false;
+      /* Try to return a Trusted Type object instead of a string, return a string in
+       * case Trusted Types are not supported  */
+
+      let RETURN_TRUSTED_TYPE = false;
+      /* Output should be free from DOM clobbering attacks?
+       * This sanitizes markups named with colliding, clobberable built-in DOM APIs.
+       */
+
+      let SANITIZE_DOM = true;
+      /* Achieve full DOM Clobbering protection by isolating the namespace of named
+       * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.
+       *
+       * HTML/DOM spec rules that enable DOM Clobbering:
+       *   - Named Access on Window (§7.3.3)
+       *   - DOM Tree Accessors (§3.1.5)
+       *   - Form Element Parent-Child Relations (§4.10.3)
+       *   - Iframe srcdoc / Nested WindowProxies (§4.8.5)
+       *   - HTMLCollection (§4.2.10.2)
+       *
+       * Namespace isolation is implemented by prefixing `id` and `name` attributes
+       * with a constant string, i.e., `user-content-`
+       */
+
+      let SANITIZE_NAMED_PROPS = false;
+      const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';
+      /* Keep element content when removing element? */
+
+      let KEEP_CONTENT = true;
+      /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead
+       * of importing it into a new Document and returning a sanitized copy */
+
+      let IN_PLACE = false;
+      /* Allow usage of profiles like html, svg and mathMl */
+
+      let USE_PROFILES = {};
+      /* Tags to ignore content of when KEEP_CONTENT is true */
+
+      let FORBID_CONTENTS = null;
+      const DEFAULT_FORBID_CONTENTS = addToSet({}, ['annotation-xml', 'audio', 'colgroup', 'desc', 'foreignobject', 'head', 'iframe', 'math', 'mi', 'mn', 'mo', 'ms', 'mtext', 'noembed', 'noframes', 'noscript', 'plaintext', 'script', 'style', 'svg', 'template', 'thead', 'title', 'video', 'xmp']);
+      /* Tags that are safe for data: URIs */
+
+      let DATA_URI_TAGS = null;
+      const DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']);
+      /* Attributes safe for values like "javascript:" */
+
+      let URI_SAFE_ATTRIBUTES = null;
+      const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']);
+      const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';
+      const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';
+      const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';
+      /* Document namespace */
+
+      let NAMESPACE = HTML_NAMESPACE;
+      let IS_EMPTY_INPUT = false;
+      /* Allowed XHTML+XML namespaces */
+
+      let ALLOWED_NAMESPACES = null;
+      const DEFAULT_ALLOWED_NAMESPACES = addToSet({}, [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE], stringToString);
+      /* Parsing of strict XHTML documents */
+
+      let PARSER_MEDIA_TYPE;
+      const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];
+      const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';
+      let transformCaseFunc;
+      /* Keep a reference to config to pass to hooks */
+
+      let CONFIG = null;
+      /* Ideally, do not touch anything below this line */
+
+      /* ______________________________________________ */
+
+      const formElement = document.createElement('form');
+
+      const isRegexOrFunction = function isRegexOrFunction(testValue) {
+        return testValue instanceof RegExp || testValue instanceof Function;
+      };
+      /**
+       * _parseConfig
+       *
+       * @param  {Object} cfg optional config literal
+       */
+      // eslint-disable-next-line complexity
+
+
+      const _parseConfig = function _parseConfig(cfg) {
+        if (CONFIG && CONFIG === cfg) {
+          return;
+        }
+        /* Shield configuration object from tampering */
+
+
+        if (!cfg || typeof cfg !== 'object') {
+          cfg = {};
+        }
+        /* Shield configuration object from prototype pollution */
+
+
+        cfg = clone(cfg);
+        PARSER_MEDIA_TYPE = // eslint-disable-next-line unicorn/prefer-includes
+        SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? PARSER_MEDIA_TYPE = DEFAULT_PARSER_MEDIA_TYPE : PARSER_MEDIA_TYPE = cfg.PARSER_MEDIA_TYPE; // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.
+
+        transformCaseFunc = PARSER_MEDIA_TYPE === 'application/xhtml+xml' ? stringToString : stringToLowerCase;
+        /* Set configuration parameters */
+
+        ALLOWED_TAGS = 'ALLOWED_TAGS' in cfg ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS;
+        ALLOWED_ATTR = 'ALLOWED_ATTR' in cfg ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR;
+        ALLOWED_NAMESPACES = 'ALLOWED_NAMESPACES' in cfg ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES;
+        URI_SAFE_ATTRIBUTES = 'ADD_URI_SAFE_ATTR' in cfg ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), // eslint-disable-line indent
+        cfg.ADD_URI_SAFE_ATTR, // eslint-disable-line indent
+        transformCaseFunc // eslint-disable-line indent
+        ) // eslint-disable-line indent
+        : DEFAULT_URI_SAFE_ATTRIBUTES;
+        DATA_URI_TAGS = 'ADD_DATA_URI_TAGS' in cfg ? addToSet(clone(DEFAULT_DATA_URI_TAGS), // eslint-disable-line indent
+        cfg.ADD_DATA_URI_TAGS, // eslint-disable-line indent
+        transformCaseFunc // eslint-disable-line indent
+        ) // eslint-disable-line indent
+        : DEFAULT_DATA_URI_TAGS;
+        FORBID_CONTENTS = 'FORBID_CONTENTS' in cfg ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS;
+        FORBID_TAGS = 'FORBID_TAGS' in cfg ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : {};
+        FORBID_ATTR = 'FORBID_ATTR' in cfg ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : {};
+        USE_PROFILES = 'USE_PROFILES' in cfg ? cfg.USE_PROFILES : false;
+        ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true
+
+        ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true
+
+        ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false
+
+        ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true
+
+        SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false
+
+        WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false
+
+        RETURN_DOM = cfg.RETURN_DOM || false; // Default false
+
+        RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false
+
+        RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false
+
+        FORCE_BODY = cfg.FORCE_BODY || false; // Default false
+
+        SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true
+
+        SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false
+
+        KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true
+
+        IN_PLACE = cfg.IN_PLACE || false; // Default false
+
+        IS_ALLOWED_URI$1 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI;
+        NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;
+        CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {};
+
+        if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)) {
+          CUSTOM_ELEMENT_HANDLING.tagNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck;
+        }
+
+        if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)) {
+          CUSTOM_ELEMENT_HANDLING.attributeNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck;
+        }
+
+        if (cfg.CUSTOM_ELEMENT_HANDLING && typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements === 'boolean') {
+          CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements = cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements;
+        }
+
+        if (SAFE_FOR_TEMPLATES) {
+          ALLOW_DATA_ATTR = false;
+        }
+
+        if (RETURN_DOM_FRAGMENT) {
+          RETURN_DOM = true;
+        }
+        /* Parse profile info */
+
+
+        if (USE_PROFILES) {
+          ALLOWED_TAGS = addToSet({}, [...text]);
+          ALLOWED_ATTR = [];
+
+          if (USE_PROFILES.html === true) {
+            addToSet(ALLOWED_TAGS, html$1);
+            addToSet(ALLOWED_ATTR, html);
+          }
+
+          if (USE_PROFILES.svg === true) {
+            addToSet(ALLOWED_TAGS, svg$1);
+            addToSet(ALLOWED_ATTR, svg);
+            addToSet(ALLOWED_ATTR, xml);
+          }
+
+          if (USE_PROFILES.svgFilters === true) {
+            addToSet(ALLOWED_TAGS, svgFilters);
+            addToSet(ALLOWED_ATTR, svg);
+            addToSet(ALLOWED_ATTR, xml);
+          }
+
+          if (USE_PROFILES.mathMl === true) {
+            addToSet(ALLOWED_TAGS, mathMl$1);
+            addToSet(ALLOWED_ATTR, mathMl);
+            addToSet(ALLOWED_ATTR, xml);
+          }
+        }
+        /* Merge configuration parameters */
+
+
+        if (cfg.ADD_TAGS) {
+          if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {
+            ALLOWED_TAGS = clone(ALLOWED_TAGS);
+          }
+
+          addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);
+        }
+
+        if (cfg.ADD_ATTR) {
+          if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {
+            ALLOWED_ATTR = clone(ALLOWED_ATTR);
+          }
+
+          addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);
+        }
+
+        if (cfg.ADD_URI_SAFE_ATTR) {
+          addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);
+        }
+
+        if (cfg.FORBID_CONTENTS) {
+          if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {
+            FORBID_CONTENTS = clone(FORBID_CONTENTS);
+          }
+
+          addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);
+        }
+        /* Add #text in case KEEP_CONTENT is set to true */
+
+
+        if (KEEP_CONTENT) {
+          ALLOWED_TAGS['#text'] = true;
+        }
+        /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */
+
+
+        if (WHOLE_DOCUMENT) {
+          addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);
+        }
+        /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */
+
+
+        if (ALLOWED_TAGS.table) {
+          addToSet(ALLOWED_TAGS, ['tbody']);
+          delete FORBID_TAGS.tbody;
+        }
+
+        if (cfg.TRUSTED_TYPES_POLICY) {
+          if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {
+            throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createHTML" hook.');
+          }
+
+          if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {
+            throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a "createScriptURL" hook.');
+          } // Overwrite existing TrustedTypes policy.
+
+
+          trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY; // Sign local variables required by `sanitize`.
+
+          emptyHTML = trustedTypesPolicy.createHTML('');
+        } else {
+          // Uninitialized policy, attempt to initialize the internal dompurify policy.
+          if (trustedTypesPolicy === undefined) {
+            trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript);
+          } // If creating the internal policy succeeded sign internal variables.
+
+
+          if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {
+            emptyHTML = trustedTypesPolicy.createHTML('');
+          }
+        } // Prevent further manipulation of configuration.
+        // Not available in IE8, Safari 5, etc.
+
+
+        if (freeze) {
+          freeze(cfg);
+        }
+
+        CONFIG = cfg;
+      };
+
+      const MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']);
+      const HTML_INTEGRATION_POINTS = addToSet({}, ['foreignobject', 'desc', 'title', 'annotation-xml']); // Certain elements are allowed in both SVG and HTML
+      // namespace. We need to specify them explicitly
+      // so that they don't get erroneously deleted from
+      // HTML namespace.
+
+      const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']);
+      /* Keep track of all possible SVG and MathML tags
+       * so that we can perform the namespace checks
+       * correctly. */
+
+      const ALL_SVG_TAGS = addToSet({}, svg$1);
+      addToSet(ALL_SVG_TAGS, svgFilters);
+      addToSet(ALL_SVG_TAGS, svgDisallowed);
+      const ALL_MATHML_TAGS = addToSet({}, mathMl$1);
+      addToSet(ALL_MATHML_TAGS, mathMlDisallowed);
+      /**
+       *
+       *
+       * @param  {Element} element a DOM element whose namespace is being checked
+       * @returns {boolean} Return false if the element has a
+       *  namespace that a spec-compliant parser would never
+       *  return. Return true otherwise.
+       */
+
+      const _checkValidNamespace = function _checkValidNamespace(element) {
+        let parent = getParentNode(element); // In JSDOM, if we're inside shadow DOM, then parentNode
+        // can be null. We just simulate parent in this case.
+
+        if (!parent || !parent.tagName) {
+          parent = {
+            namespaceURI: NAMESPACE,
+            tagName: 'template'
+          };
+        }
+
+        const tagName = stringToLowerCase(element.tagName);
+        const parentTagName = stringToLowerCase(parent.tagName);
+
+        if (!ALLOWED_NAMESPACES[element.namespaceURI]) {
+          return false;
+        }
+
+        if (element.namespaceURI === SVG_NAMESPACE) {
+          // The only way to switch from HTML namespace to SVG
+          // is via <svg>. If it happens via any other tag, then
+          // it should be killed.
+          if (parent.namespaceURI === HTML_NAMESPACE) {
+            return tagName === 'svg';
+          } // The only way to switch from MathML to SVG is via`
+          // svg if parent is either <annotation-xml> or MathML
+          // text integration points.
+
+
+          if (parent.namespaceURI === MATHML_NAMESPACE) {
+            return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]);
+          } // We only allow elements that are defined in SVG
+          // spec. All others are disallowed in SVG namespace.
+
+
+          return Boolean(ALL_SVG_TAGS[tagName]);
+        }
+
+        if (element.namespaceURI === MATHML_NAMESPACE) {
+          // The only way to switch from HTML namespace to MathML
+          // is via <math>. If it happens via any other tag, then
+          // it should be killed.
+          if (parent.namespaceURI === HTML_NAMESPACE) {
+            return tagName === 'math';
+          } // The only way to switch from SVG to MathML is via
+          // <math> and HTML integration points
+
+
+          if (parent.namespaceURI === SVG_NAMESPACE) {
+            return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];
+          } // We only allow elements that are defined in MathML
+          // spec. All others are disallowed in MathML namespace.
+
+
+          return Boolean(ALL_MATHML_TAGS[tagName]);
+        }
+
+        if (element.namespaceURI === HTML_NAMESPACE) {
+          // The only way to switch from SVG to HTML is via
+          // HTML integration points, and from MathML to HTML
+          // is via MathML text integration points
+          if (parent.namespaceURI === SVG_NAMESPACE && !HTML_INTEGRATION_POINTS[parentTagName]) {
+            return false;
+          }
+
+          if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) {
+            return false;
+          } // We disallow tags that are specific for MathML
+          // or SVG and should never appear in HTML namespace
+
+
+          return !ALL_MATHML_TAGS[tagName] && (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName]);
+        } // For XHTML and XML documents that support custom namespaces
+
+
+        if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && ALLOWED_NAMESPACES[element.namespaceURI]) {
+          return true;
+        } // The code should never reach this place (this means
+        // that the element somehow got namespace that is not
+        // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).
+        // Return false just in case.
+
+
+        return false;
+      };
+      /**
+       * _forceRemove
+       *
+       * @param  {Node} node a DOM node
+       */
+
+
+      const _forceRemove = function _forceRemove(node) {
+        arrayPush(DOMPurify.removed, {
+          element: node
+        });
+
+        try {
+          // eslint-disable-next-line unicorn/prefer-dom-node-remove
+          node.parentNode.removeChild(node);
+        } catch (_) {
+          node.remove();
+        }
+      };
+      /**
+       * _removeAttribute
+       *
+       * @param  {String} name an Attribute name
+       * @param  {Node} node a DOM node
+       */
+
+
+      const _removeAttribute = function _removeAttribute(name, node) {
+        try {
+          arrayPush(DOMPurify.removed, {
+            attribute: node.getAttributeNode(name),
+            from: node
+          });
+        } catch (_) {
+          arrayPush(DOMPurify.removed, {
+            attribute: null,
+            from: node
+          });
+        }
+
+        node.removeAttribute(name); // We void attribute values for unremovable "is"" attributes
+
+        if (name === 'is' && !ALLOWED_ATTR[name]) {
+          if (RETURN_DOM || RETURN_DOM_FRAGMENT) {
+            try {
+              _forceRemove(node);
+            } catch (_) {}
+          } else {
+            try {
+              node.setAttribute(name, '');
+            } catch (_) {}
+          }
+        }
+      };
+      /**
+       * _initDocument
+       *
+       * @param  {String} dirty a string of dirty markup
+       * @return {Document} a DOM, filled with the dirty markup
+       */
+
+
+      const _initDocument = function _initDocument(dirty) {
+        /* Create a HTML document */
+        let doc;
+        let leadingWhitespace;
+
+        if (FORCE_BODY) {
+          dirty = '<remove></remove>' + dirty;
+        } else {
+          /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */
+          const matches = stringMatch(dirty, /^[\r\n\t ]+/);
+          leadingWhitespace = matches && matches[0];
+        }
+
+        if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && NAMESPACE === HTML_NAMESPACE) {
+          // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)
+          dirty = '<html xmlns="http://www.w3.org/1999/xhtml"><head></head><body>' + dirty + '</body></html>';
+        }
+
+        const dirtyPayload = trustedTypesPolicy ? trustedTypesPolicy.createHTML(dirty) : dirty;
+        /*
+         * Use the DOMParser API by default, fallback later if needs be
+         * DOMParser not work for svg when has multiple root element.
+         */
+
+        if (NAMESPACE === HTML_NAMESPACE) {
+          try {
+            doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);
+          } catch (_) {}
+        }
+        /* Use createHTMLDocument in case DOMParser is not available */
+
+
+        if (!doc || !doc.documentElement) {
+          doc = implementation.createDocument(NAMESPACE, 'template', null);
+
+          try {
+            doc.documentElement.innerHTML = IS_EMPTY_INPUT ? emptyHTML : dirtyPayload;
+          } catch (_) {// Syntax error if dirtyPayload is invalid xml
+          }
+        }
+
+        const body = doc.body || doc.documentElement;
+
+        if (dirty && leadingWhitespace) {
+          body.insertBefore(document.createTextNode(leadingWhitespace), body.childNodes[0] || null);
+        }
+        /* Work on whole document or just its body */
+
+
+        if (NAMESPACE === HTML_NAMESPACE) {
+          return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0];
+        }
+
+        return WHOLE_DOCUMENT ? doc.documentElement : body;
+      };
+      /**
+       * _createIterator
+       *
+       * @param  {Document} root document/fragment to create iterator for
+       * @return {Iterator} iterator instance
+       */
+
+
+      const _createIterator = function _createIterator(root) {
+        return createNodeIterator.call(root.ownerDocument || root, root, // eslint-disable-next-line no-bitwise
+        NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT, null, false);
+      };
+      /**
+       * _isClobbered
+       *
+       * @param  {Node} elm element to check for clobbering attacks
+       * @return {Boolean} true if clobbered, false if safe
+       */
+
+
+      const _isClobbered = function _isClobbered(elm) {
+        return elm instanceof HTMLFormElement && (typeof elm.nodeName !== 'string' || typeof elm.textContent !== 'string' || typeof elm.removeChild !== 'function' || !(elm.attributes instanceof NamedNodeMap) || typeof elm.removeAttribute !== 'function' || typeof elm.setAttribute !== 'function' || typeof elm.namespaceURI !== 'string' || typeof elm.insertBefore !== 'function' || typeof elm.hasChildNodes !== 'function');
+      };
+      /**
+       * _isNode
+       *
+       * @param  {Node} obj object to check whether it's a DOM node
+       * @return {Boolean} true is object is a DOM node
+       */
+
+
+      const _isNode = function _isNode(object) {
+        return typeof Node === 'object' ? object instanceof Node : object && typeof object === 'object' && typeof object.nodeType === 'number' && typeof object.nodeName === 'string';
+      };
+      /**
+       * _executeHook
+       * Execute user configurable hooks
+       *
+       * @param  {String} entryPoint  Name of the hook's entry point
+       * @param  {Node} currentNode node to work on with the hook
+       * @param  {Object} data additional hook parameters
+       */
+
+
+      const _executeHook = function _executeHook(entryPoint, currentNode, data) {
+        if (!hooks[entryPoint]) {
+          return;
+        }
+
+        arrayForEach(hooks[entryPoint], hook => {
+          hook.call(DOMPurify, currentNode, data, CONFIG);
+        });
+      };
+      /**
+       * _sanitizeElements
+       *
+       * @protect nodeName
+       * @protect textContent
+       * @protect removeChild
+       *
+       * @param   {Node} currentNode to check for permission to exist
+       * @return  {Boolean} true if node was killed, false if left alive
+       */
+
+
+      const _sanitizeElements = function _sanitizeElements(currentNode) {
+        let content;
+        /* Execute a hook if present */
+
+        _executeHook('beforeSanitizeElements', currentNode, null);
+        /* Check if element is clobbered or can clobber */
+
+
+        if (_isClobbered(currentNode)) {
+          _forceRemove(currentNode);
+
+          return true;
+        }
+        /* Now let's check the element's type and name */
+
+
+        const tagName = transformCaseFunc(currentNode.nodeName);
+        /* Execute a hook if present */
+
+        _executeHook('uponSanitizeElement', currentNode, {
+          tagName,
+          allowedTags: ALLOWED_TAGS
+        });
+        /* Detect mXSS attempts abusing namespace confusion */
+
+
+        if (currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && (!_isNode(currentNode.content) || !_isNode(currentNode.content.firstElementChild)) && regExpTest(/<[/\w]/g, currentNode.innerHTML) && regExpTest(/<[/\w]/g, currentNode.textContent)) {
+          _forceRemove(currentNode);
+
+          return true;
+        }
+        /* Remove element if anything forbids its presence */
+
+
+        if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {
+          /* Check if we have a custom element to handle */
+          if (!FORBID_TAGS[tagName] && _basicCustomElementTest(tagName)) {
+            if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)) return false;
+            if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)) return false;
+          }
+          /* Keep content except for bad-listed elements */
+
+
+          if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {
+            const parentNode = getParentNode(currentNode) || currentNode.parentNode;
+            const childNodes = getChildNodes(currentNode) || currentNode.childNodes;
+
+            if (childNodes && parentNode) {
+              const childCount = childNodes.length;
+
+              for (let i = childCount - 1; i >= 0; --i) {
+                parentNode.insertBefore(cloneNode(childNodes[i], true), getNextSibling(currentNode));
+              }
+            }
+          }
+
+          _forceRemove(currentNode);
+
+          return true;
+        }
+        /* Check whether element has a valid namespace */
+
+
+        if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) {
+          _forceRemove(currentNode);
+
+          return true;
+        }
+        /* Make sure that older browsers don't get fallback-tag mXSS */
+
+
+        if ((tagName === 'noscript' || tagName === 'noembed' || tagName === 'noframes') && regExpTest(/<\/no(script|embed|frames)/i, currentNode.innerHTML)) {
+          _forceRemove(currentNode);
+
+          return true;
+        }
+        /* Sanitize element content to be template-safe */
+
+
+        if (SAFE_FOR_TEMPLATES && currentNode.nodeType === 3) {
+          /* Get the element's text content */
+          content = currentNode.textContent;
+          content = stringReplace(content, MUSTACHE_EXPR, ' ');
+          content = stringReplace(content, ERB_EXPR, ' ');
+          content = stringReplace(content, TMPLIT_EXPR, ' ');
+
+          if (currentNode.textContent !== content) {
+            arrayPush(DOMPurify.removed, {
+              element: currentNode.cloneNode()
+            });
+            currentNode.textContent = content;
+          }
+        }
+        /* Execute a hook if present */
+
+
+        _executeHook('afterSanitizeElements', currentNode, null);
+
+        return false;
+      };
+      /**
+       * _isValidAttribute
+       *
+       * @param  {string} lcTag Lowercase tag name of containing element.
+       * @param  {string} lcName Lowercase attribute name.
+       * @param  {string} value Attribute value.
+       * @return {Boolean} Returns true if `value` is valid, otherwise false.
+       */
+      // eslint-disable-next-line complexity
+
+
+      const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) {
+        /* Make sure attribute cannot clobber */
+        if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) {
+          return false;
+        }
+        /* Allow valid data-* attributes: At least one character after "-"
+            (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)
+            XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)
+            We don't need to check the value; it's always URI safe. */
+
+
+        if (ALLOW_DATA_ATTR && !FORBID_ATTR[lcName] && regExpTest(DATA_ATTR, lcName)) ; else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) ; else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) {
+          if ( // First condition does a very basic check if a) it's basically a valid custom element tagname AND
+          // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck
+          // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck
+          _basicCustomElementTest(lcTag) && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag)) && (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName) || CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName)) || // Alternative, second condition checks if it's an `is`-attribute, AND
+          // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck
+          lcName === 'is' && CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))) ; else {
+            return false;
+          }
+          /* Check value is safe. First, is attr inert? If so, is safe */
+
+        } else if (URI_SAFE_ATTRIBUTES[lcName]) ; else if (regExpTest(IS_ALLOWED_URI$1, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if ((lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') && lcTag !== 'script' && stringIndexOf(value, 'data:') === 0 && DATA_URI_TAGS[lcTag]) ; else if (ALLOW_UNKNOWN_PROTOCOLS && !regExpTest(IS_SCRIPT_OR_DATA, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if (value) {
+          return false;
+        } else ;
+
+        return true;
+      };
+      /**
+       * _basicCustomElementCheck
+       * checks if at least one dash is included in tagName, and it's not the first char
+       * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name
+       * @param {string} tagName name of the tag of the node to sanitize
+       */
+
+
+      const _basicCustomElementTest = function _basicCustomElementTest(tagName) {
+        return tagName.indexOf('-') > 0;
+      };
+      /**
+       * _sanitizeAttributes
+       *
+       * @protect attributes
+       * @protect nodeName
+       * @protect removeAttribute
+       * @protect setAttribute
+       *
+       * @param  {Node} currentNode to sanitize
+       */
+
+
+      const _sanitizeAttributes = function _sanitizeAttributes(currentNode) {
+        let attr;
+        let value;
+        let lcName;
+        let l;
+        /* Execute a hook if present */
+
+        _executeHook('beforeSanitizeAttributes', currentNode, null);
+
+        const {
+          attributes
+        } = currentNode;
+        /* Check if we have attributes; if not we might have a text node */
+
+        if (!attributes) {
+          return;
+        }
+
+        const hookEvent = {
+          attrName: '',
+          attrValue: '',
+          keepAttr: true,
+          allowedAttributes: ALLOWED_ATTR
+        };
+        l = attributes.length;
+        /* Go backwards over all attributes; safely remove bad ones */
+
+        while (l--) {
+          attr = attributes[l];
+          const {
+            name,
+            namespaceURI
+          } = attr;
+          value = name === 'value' ? attr.value : stringTrim(attr.value);
+          lcName = transformCaseFunc(name);
+          /* Execute a hook if present */
+
+          hookEvent.attrName = lcName;
+          hookEvent.attrValue = value;
+          hookEvent.keepAttr = true;
+          hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set
+
+          _executeHook('uponSanitizeAttribute', currentNode, hookEvent);
+
+          value = hookEvent.attrValue;
+          /* Did the hooks approve of the attribute? */
+
+          if (hookEvent.forceKeepAttr) {
+            continue;
+          }
+          /* Remove attribute */
+
+
+          _removeAttribute(name, currentNode);
+          /* Did the hooks approve of the attribute? */
+
+
+          if (!hookEvent.keepAttr) {
+            continue;
+          }
+          /* Work around a security issue in jQuery 3.0 */
+
+
+          if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\/>/i, value)) {
+            _removeAttribute(name, currentNode);
+
+            continue;
+          }
+          /* Sanitize attribute content to be template-safe */
+
+
+          if (SAFE_FOR_TEMPLATES) {
+            value = stringReplace(value, MUSTACHE_EXPR, ' ');
+            value = stringReplace(value, ERB_EXPR, ' ');
+            value = stringReplace(value, TMPLIT_EXPR, ' ');
+          }
+          /* Is `value` valid for this attribute? */
+
+
+          const lcTag = transformCaseFunc(currentNode.nodeName);
+
+          if (!_isValidAttribute(lcTag, lcName, value)) {
+            continue;
+          }
+          /* Full DOM Clobbering protection via namespace isolation,
+           * Prefix id and name attributes with `user-content-`
+           */
+
+
+          if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) {
+            // Remove the attribute with this value
+            _removeAttribute(name, currentNode); // Prefix the value and later re-create the attribute with the sanitized value
+
+
+            value = SANITIZE_NAMED_PROPS_PREFIX + value;
+          }
+          /* Handle attributes that require Trusted Types */
+
+
+          if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') {
+            if (namespaceURI) ; else {
+              switch (trustedTypes.getAttributeType(lcTag, lcName)) {
+                case 'TrustedHTML':
+                  {
+                    value = trustedTypesPolicy.createHTML(value);
+                    break;
+                  }
+
+                case 'TrustedScriptURL':
+                  {
+                    value = trustedTypesPolicy.createScriptURL(value);
+                    break;
+                  }
+              }
+            }
+          }
+          /* Handle invalid data-* attribute set by try-catching it */
+
+
+          try {
+            if (namespaceURI) {
+              currentNode.setAttributeNS(namespaceURI, name, value);
+            } else {
+              /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. "x-schema". */
+              currentNode.setAttribute(name, value);
+            }
+
+            arrayPop(DOMPurify.removed);
+          } catch (_) {}
+        }
+        /* Execute a hook if present */
+
+
+        _executeHook('afterSanitizeAttributes', currentNode, null);
+      };
+      /**
+       * _sanitizeShadowDOM
+       *
+       * @param  {DocumentFragment} fragment to iterate over recursively
+       */
+
+
+      const _sanitizeShadowDOM = function _sanitizeShadowDOM(fragment) {
+        let shadowNode;
+
+        const shadowIterator = _createIterator(fragment);
+        /* Execute a hook if present */
+
+
+        _executeHook('beforeSanitizeShadowDOM', fragment, null);
+
+        while (shadowNode = shadowIterator.nextNode()) {
+          /* Execute a hook if present */
+          _executeHook('uponSanitizeShadowNode', shadowNode, null);
+          /* Sanitize tags and elements */
+
+
+          if (_sanitizeElements(shadowNode)) {
+            continue;
+          }
+          /* Deep shadow DOM detected */
+
+
+          if (shadowNode.content instanceof DocumentFragment) {
+            _sanitizeShadowDOM(shadowNode.content);
+          }
+          /* Check attributes, sanitize if necessary */
+
+
+          _sanitizeAttributes(shadowNode);
+        }
+        /* Execute a hook if present */
+
+
+        _executeHook('afterSanitizeShadowDOM', fragment, null);
+      };
+      /**
+       * Sanitize
+       * Public method providing core sanitation functionality
+       *
+       * @param {String|Node} dirty string or DOM node
+       * @param {Object} configuration object
+       */
+      // eslint-disable-next-line complexity
+
+
+      DOMPurify.sanitize = function (dirty) {
+        let cfg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};
+        let body;
+        let importedNode;
+        let currentNode;
+        let returnNode;
+        /* Make sure we have a string to sanitize.
+          DO NOT return early, as this will return the wrong type if
+          the user has requested a DOM object rather than a string */
+
+        IS_EMPTY_INPUT = !dirty;
+
+        if (IS_EMPTY_INPUT) {
+          dirty = '<!-->';
+        }
+        /* Stringify, in case dirty is an object */
+
+
+        if (typeof dirty !== 'string' && !_isNode(dirty)) {
+          if (typeof dirty.toString === 'function') {
+            dirty = dirty.toString();
+
+            if (typeof dirty !== 'string') {
+              throw typeErrorCreate('dirty is not a string, aborting');
+            }
+          } else {
+            throw typeErrorCreate('toString is not a function');
+          }
+        }
+        /* Return dirty HTML if DOMPurify cannot run */
+
+
+        if (!DOMPurify.isSupported) {
+          return dirty;
+        }
+        /* Assign config vars */
+
+
+        if (!SET_CONFIG) {
+          _parseConfig(cfg);
+        }
+        /* Clean up removed elements */
+
+
+        DOMPurify.removed = [];
+        /* Check if dirty is correctly typed for IN_PLACE */
+
+        if (typeof dirty === 'string') {
+          IN_PLACE = false;
+        }
+
+        if (IN_PLACE) {
+          /* Do some early pre-sanitization to avoid unsafe root nodes */
+          if (dirty.nodeName) {
+            const tagName = transformCaseFunc(dirty.nodeName);
+
+            if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {
+              throw typeErrorCreate('root node is forbidden and cannot be sanitized in-place');
+            }
+          }
+        } else if (dirty instanceof Node) {
+          /* If dirty is a DOM element, append to an empty document to avoid
+             elements being stripped by the parser */
+          body = _initDocument('<!---->');
+          importedNode = body.ownerDocument.importNode(dirty, true);
+
+          if (importedNode.nodeType === 1 && importedNode.nodeName === 'BODY') {
+            /* Node is already a body, use as is */
+            body = importedNode;
+          } else if (importedNode.nodeName === 'HTML') {
+            body = importedNode;
+          } else {
+            // eslint-disable-next-line unicorn/prefer-dom-node-append
+            body.appendChild(importedNode);
+          }
+        } else {
+          /* Exit directly if we have nothing to do */
+          if (!RETURN_DOM && !SAFE_FOR_TEMPLATES && !WHOLE_DOCUMENT && // eslint-disable-next-line unicorn/prefer-includes
+          dirty.indexOf('<') === -1) {
+            return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(dirty) : dirty;
+          }
+          /* Initialize the document to work on */
+
+
+          body = _initDocument(dirty);
+          /* Check we have a DOM node from the data */
+
+          if (!body) {
+            return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : '';
+          }
+        }
+        /* Remove first element node (ours) if FORCE_BODY is set */
+
+
+        if (body && FORCE_BODY) {
+          _forceRemove(body.firstChild);
+        }
+        /* Get node iterator */
+
+
+        const nodeIterator = _createIterator(IN_PLACE ? dirty : body);
+        /* Now start iterating over the created document */
+
+
+        while (currentNode = nodeIterator.nextNode()) {
+          /* Sanitize tags and elements */
+          if (_sanitizeElements(currentNode)) {
+            continue;
+          }
+          /* Shadow DOM detected, sanitize it */
+
+
+          if (currentNode.content instanceof DocumentFragment) {
+            _sanitizeShadowDOM(currentNode.content);
+          }
+          /* Check attributes, sanitize if necessary */
+
+
+          _sanitizeAttributes(currentNode);
+        }
+        /* If we sanitized `dirty` in-place, return it. */
+
+
+        if (IN_PLACE) {
+          return dirty;
+        }
+        /* Return sanitized string or DOM */
+
+
+        if (RETURN_DOM) {
+          if (RETURN_DOM_FRAGMENT) {
+            returnNode = createDocumentFragment.call(body.ownerDocument);
+
+            while (body.firstChild) {
+              // eslint-disable-next-line unicorn/prefer-dom-node-append
+              returnNode.appendChild(body.firstChild);
+            }
+          } else {
+            returnNode = body;
+          }
+
+          if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) {
+            /*
+              AdoptNode() is not used because internal state is not reset
+              (e.g. the past names map of a HTMLFormElement), this is safe
+              in theory but we would rather not risk another attack vector.
+              The state that is cloned by importNode() is explicitly defined
+              by the specs.
+            */
+            returnNode = importNode.call(originalDocument, returnNode, true);
+          }
+
+          return returnNode;
+        }
+
+        let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML;
+        /* Serialize doctype if allowed */
+
+        if (WHOLE_DOCUMENT && ALLOWED_TAGS['!doctype'] && body.ownerDocument && body.ownerDocument.doctype && body.ownerDocument.doctype.name && regExpTest(DOCTYPE_NAME, body.ownerDocument.doctype.name)) {
+          serializedHTML = '<!DOCTYPE ' + body.ownerDocument.doctype.name + '>\n' + serializedHTML;
+        }
+        /* Sanitize final string template-safe */
+
+
+        if (SAFE_FOR_TEMPLATES) {
+          serializedHTML = stringReplace(serializedHTML, MUSTACHE_EXPR, ' ');
+          serializedHTML = stringReplace(serializedHTML, ERB_EXPR, ' ');
+          serializedHTML = stringReplace(serializedHTML, TMPLIT_EXPR, ' ');
+        }
+
+        return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML;
+      };
+      /**
+       * Public method to set the configuration once
+       * setConfig
+       *
+       * @param {Object} cfg configuration object
+       */
+
+
+      DOMPurify.setConfig = function (cfg) {
+        _parseConfig(cfg);
+
+        SET_CONFIG = true;
+      };
+      /**
+       * Public method to remove the configuration
+       * clearConfig
+       *
+       */
+
+
+      DOMPurify.clearConfig = function () {
+        CONFIG = null;
+        SET_CONFIG = false;
+      };
+      /**
+       * Public method to check if an attribute value is valid.
+       * Uses last set config, if any. Otherwise, uses config defaults.
+       * isValidAttribute
+       *
+       * @param  {string} tag Tag name of containing element.
+       * @param  {string} attr Attribute name.
+       * @param  {string} value Attribute value.
+       * @return {Boolean} Returns true if `value` is valid. Otherwise, returns false.
+       */
+
+
+      DOMPurify.isValidAttribute = function (tag, attr, value) {
+        /* Initialize shared config vars if necessary. */
+        if (!CONFIG) {
+          _parseConfig({});
+        }
+
+        const lcTag = transformCaseFunc(tag);
+        const lcName = transformCaseFunc(attr);
+        return _isValidAttribute(lcTag, lcName, value);
+      };
+      /**
+       * AddHook
+       * Public method to add DOMPurify hooks
+       *
+       * @param {String} entryPoint entry point for the hook to add
+       * @param {Function} hookFunction function to execute
+       */
+
+
+      DOMPurify.addHook = function (entryPoint, hookFunction) {
+        if (typeof hookFunction !== 'function') {
+          return;
+        }
+
+        hooks[entryPoint] = hooks[entryPoint] || [];
+        arrayPush(hooks[entryPoint], hookFunction);
+      };
+      /**
+       * RemoveHook
+       * Public method to remove a DOMPurify hook at a given entryPoint
+       * (pops it from the stack of hooks if more are present)
+       *
+       * @param {String} entryPoint entry point for the hook to remove
+       * @return {Function} removed(popped) hook
+       */
+
+
+      DOMPurify.removeHook = function (entryPoint) {
+        if (hooks[entryPoint]) {
+          return arrayPop(hooks[entryPoint]);
+        }
+      };
+      /**
+       * RemoveHooks
+       * Public method to remove all DOMPurify hooks at a given entryPoint
+       *
+       * @param  {String} entryPoint entry point for the hooks to remove
+       */
+
+
+      DOMPurify.removeHooks = function (entryPoint) {
+        if (hooks[entryPoint]) {
+          hooks[entryPoint] = [];
+        }
+      };
+      /**
+       * RemoveAllHooks
+       * Public method to remove all DOMPurify hooks
+       *
+       */
+
+
+      DOMPurify.removeAllHooks = function () {
+        hooks = {};
+      };
+
+      return DOMPurify;
+    }
+
+    var purify = createDOMPurify();
+
+    function createCheckbox$1(name, initialState) {
+        const container = div({class: 'igv-ui-trackgear-popover-check-container'});
+        const svg = iconMarkup('check', (true === initialState ? '#444' : 'transparent'));
+        svg.style.borderColor = 'gray';
+        svg.style.borderWidth = '1px';
+        svg.style.borderStyle = 'solid';
+
+        container.appendChild(svg);
+        let label = div(); //{ class: 'igv-some-label-class' });
+        label.textContent = name;
+        container.appendChild(label);
+
+        return container;
+    }
+
+    function createIcon(name, color) {
+        return iconMarkup(name, color);
+    }
+
+    function iconMarkup(name, color) {
+        color = color || "currentColor";
+        let icon = icons[name];
+        if (!icon) {
+            console.error(`No icon named: ${name}`);
+            icon = icons["question"];
+        }
+
+        const svg = document.createElementNS("http://www.w3.org/2000/svg", "svg");
+        svg.setAttributeNS(null,'viewBox', '0 0 ' + icon[0] + ' ' + icon[1]);
+        const path = document.createElementNS("http://www.w3.org/2000/svg", "path");
+        path.setAttributeNS(null,'fill',  color );
+        path.setAttributeNS(null,'d', icon[4]);
+        svg.appendChild(path);
+        return svg;
+    }
+
+    const icons = {
+        "check": [512, 512, [], "f00c", "M173.898 439.404l-166.4-166.4c-9.997-9.997-9.997-26.206 0-36.204l36.203-36.204c9.997-9.998 26.207-9.998 36.204 0L192 312.69 432.095 72.596c9.997-9.997 26.207-9.997 36.204 0l36.203 36.204c9.997 9.997 9.997 26.206 0 36.204l-294.4 294.401c-9.998 9.997-26.207 9.997-36.204-.001z"],
+        "cog": [512, 512, [], "f013", "M444.788 291.1l42.616 24.599c4.867 2.809 7.126 8.618 5.459 13.985-11.07 35.642-29.97 67.842-54.689 94.586a12.016 12.016 0 0 1-14.832 2.254l-42.584-24.595a191.577 191.577 0 0 1-60.759 35.13v49.182a12.01 12.01 0 0 1-9.377 11.718c-34.956 7.85-72.499 8.256-109.219.007-5.49-1.233-9.403-6.096-9.403-11.723v-49.184a191.555 191.555 0 0 1-60.759-35.13l-42.584 24.595a12.016 12.016 0 0 1-14.832-2.254c-24.718-26.744-43.619-58.944-54.689-94.586-1.667-5.366.592-11.175 5.459-13.985L67.212 291.1a193.48 193.48 0 0 1 0-70.199l-42.616-24.599c-4.867-2.809-7.126-8.618-5.459-13.985 11.07-35.642 29.97-67.842 54.689-94.586a12.016 12.016 0 0 1 14.832-2.254l42.584 24.595a191.577 191.577 0 0 1 60.759-35.13V25.759a12.01 12.01 0 0 1 9.377-11.718c34.956-7.85 72.499-8.256 109.219-.007 5.49 1.233 9.403 6.096 9.403 11.723v49.184a191.555 191.555 0 0 1 60.759 35.13l42.584-24.595a12.016 12.016 0 0 1 14.832 2.254c24.718 26.744 43.619 58.944 54.689 94.586 1.667 5.366-.592 11.175-5.459 13.985L444.788 220.9a193.485 193.485 0 0 1 0 70.2zM336 256c0-44.112-35.888-80-80-80s-80 35.888-80 80 35.888 80 80 80 80-35.888 80-80z"],
+        "exclamation": [192, 512, [], "f12a", "M176 432c0 44.112-35.888 80-80 80s-80-35.888-80-80 35.888-80 80-80 80 35.888 80 80zM25.26 25.199l13.6 272C39.499 309.972 50.041 320 62.83 320h66.34c12.789 0 23.331-10.028 23.97-22.801l13.6-272C167.425 11.49 156.496 0 142.77 0H49.23C35.504 0 24.575 11.49 25.26 25.199z"],
+        "exclamation-circle": [512, 512, [], "f06a", "M504 256c0 136.997-111.043 248-248 248S8 392.997 8 256C8 119.083 119.043 8 256 8s248 111.083 248 248zm-248 50c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z"],
+        "exclamation-triangle": [576, 512, [], "f071", "M569.517 440.013C587.975 472.007 564.806 512 527.94 512H48.054c-36.937 0-59.999-40.055-41.577-71.987L246.423 23.985c18.467-32.009 64.72-31.951 83.154 0l239.94 416.028zM288 354c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z"],
+        "minus": [448, 512, [], "f068", "M424 318.2c13.3 0 24-10.7 24-24v-76.4c0-13.3-10.7-24-24-24H24c-13.3 0-24 10.7-24 24v76.4c0 13.3 10.7 24 24 24h400z"],
+        "minus-circle": [512, 512, [], "f056", "M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zM124 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H124z"],
+        "minus-square": [448, 512, [], "f146", "M400 32H48C21.5 32 0 53.5 0 80v352c0 26.5 21.5 48 48 48h352c26.5 0 48-21.5 48-48V80c0-26.5-21.5-48-48-48zM92 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H92z"],
+        "plus": [448, 512, [], "f067", "M448 294.2v-76.4c0-13.3-10.7-24-24-24H286.2V56c0-13.3-10.7-24-24-24h-76.4c-13.3 0-24 10.7-24 24v137.8H24c-13.3 0-24 10.7-24 24v76.4c0 13.3 10.7 24 24 24h137.8V456c0 13.3 10.7 24 24 24h76.4c13.3 0 24-10.7 24-24V318.2H424c13.3 0 24-10.7 24-24z"],
+        "plus-circle": [512, 512, [], "f055", "M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm144 276c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92h-92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z"],
+        "plus-square": [448, 512, [], "f0fe", "M400 32H48C21.5 32 0 53.5 0 80v352c0 26.5 21.5 48 48 48h352c26.5 0 48-21.5 48-48V80c0-26.5-21.5-48-48-48zm-32 252c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92H92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z"],
+        "question": [384, 512, [], "f128", "M202.021 0C122.202 0 70.503 32.703 29.914 91.026c-7.363 10.58-5.093 25.086 5.178 32.874l43.138 32.709c10.373 7.865 25.132 6.026 33.253-4.148 25.049-31.381 43.63-49.449 82.757-49.449 30.764 0 68.816 19.799 68.816 49.631 0 22.552-18.617 34.134-48.993 51.164-35.423 19.86-82.299 44.576-82.299 106.405V320c0 13.255 10.745 24 24 24h72.471c13.255 0 24-10.745 24-24v-5.773c0-42.86 125.268-44.645 125.268-160.627C377.504 66.256 286.902 0 202.021 0zM192 373.459c-38.196 0-69.271 31.075-69.271 69.271 0 38.195 31.075 69.27 69.271 69.27s69.271-31.075 69.271-69.271-31.075-69.27-69.271-69.27z"],
+        "save": [448, 512, [], "f0c7", "M433.941 129.941l-83.882-83.882A48 48 0 0 0 316.118 32H48C21.49 32 0 53.49 0 80v352c0 26.51 21.49 48 48 48h352c26.51 0 48-21.49 48-48V163.882a48 48 0 0 0-14.059-33.941zM224 416c-35.346 0-64-28.654-64-64 0-35.346 28.654-64 64-64s64 28.654 64 64c0 35.346-28.654 64-64 64zm96-304.52V212c0 6.627-5.373 12-12 12H76c-6.627 0-12-5.373-12-12V108c0-6.627 5.373-12 12-12h228.52c3.183 0 6.235 1.264 8.485 3.515l3.48 3.48A11.996 11.996 0 0 1 320 111.48z"],
+        "search": [512, 512, [], "f002", "M505 442.7L405.3 343c-4.5-4.5-10.6-7-17-7H372c27.6-35.3 44-79.7 44-128C416 93.1 322.9 0 208 0S0 93.1 0 208s93.1 208 208 208c48.3 0 92.7-16.4 128-44v16.3c0 6.4 2.5 12.5 7 17l99.7 99.7c9.4 9.4 24.6 9.4 33.9 0l28.3-28.3c9.4-9.4 9.4-24.6.1-34zM208 336c-70.7 0-128-57.2-128-128 0-70.7 57.2-128 128-128 70.7 0 128 57.2 128 128 0 70.7-57.2 128-128 128z"],
+        "share": [512, 512, [], "f064", "M503.691 189.836L327.687 37.851C312.281 24.546 288 35.347 288 56.015v80.053C127.371 137.907 0 170.1 0 322.326c0 61.441 39.581 122.309 83.333 154.132 13.653 9.931 33.111-2.533 28.077-18.631C66.066 312.814 132.917 274.316 288 272.085V360c0 20.7 24.3 31.453 39.687 18.164l176.004-152c11.071-9.562 11.086-26.753 0-36.328z"],
+        "spinner": [512, 512, [], "f110", "M304 48c0 26.51-21.49 48-48 48s-48-21.49-48-48 21.49-48 48-48 48 21.49 48 48zm-48 368c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48-21.49-48-48-48zm208-208c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48-21.49-48-48-48zM96 256c0-26.51-21.49-48-48-48S0 229.49 0 256s21.49 48 48 48 48-21.49 48-48zm12.922 99.078c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48c0-26.509-21.491-48-48-48zm294.156 0c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48c0-26.509-21.49-48-48-48zM108.922 60.922c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48-21.491-48-48-48z"],
+        "square": [448, 512, [], "f0c8", "M400 32H48C21.5 32 0 53.5 0 80v352c0 26.5 21.5 48 48 48h352c26.5 0 48-21.5 48-48V80c0-26.5-21.5-48-48-48z"],
+        "square-full": [512, 512, [], "f45c", "M512 512H0V0h512v512z"],
+        "times": [384, 512, [], "f00d", "M323.1 441l53.9-53.9c9.4-9.4 9.4-24.5 0-33.9L279.8 256l97.2-97.2c9.4-9.4 9.4-24.5 0-33.9L323.1 71c-9.4-9.4-24.5-9.4-33.9 0L192 168.2 94.8 71c-9.4-9.4-24.5-9.4-33.9 0L7 124.9c-9.4 9.4-9.4 24.5 0 33.9l97.2 97.2L7 353.2c-9.4 9.4-9.4 24.5 0 33.9L60.9 441c9.4 9.4 24.5 9.4 33.9 0l97.2-97.2 97.2 97.2c9.3 9.3 24.5 9.3 33.9 0z"],
+        "times-circle": [512, 512, [], "f057", "M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm121.6 313.1c4.7 4.7 4.7 12.3 0 17L338 377.6c-4.7 4.7-12.3 4.7-17 0L256 312l-65.1 65.6c-4.7 4.7-12.3 4.7-17 0L134.4 338c-4.7-4.7-4.7-12.3 0-17l65.6-65-65.6-65.1c-4.7-4.7-4.7-12.3 0-17l39.6-39.6c4.7-4.7 12.3-4.7 17 0l65 65.7 65.1-65.6c4.7-4.7 12.3-4.7 17 0l39.6 39.6c4.7 4.7 4.7 12.3 0 17L312 256l65.6 65.1z"],
+        "wrench": [512, 512, [], "f0ad", "M481.156 200c9.3 0 15.12 10.155 10.325 18.124C466.295 259.992 420.419 288 368 288c-79.222 0-143.501-63.974-143.997-143.079C223.505 65.469 288.548-.001 368.002 0c52.362.001 98.196 27.949 123.4 69.743C496.24 77.766 490.523 88 481.154 88H376l-40 56 40 56h105.156zm-171.649 93.003L109.255 493.255c-24.994 24.993-65.515 24.994-90.51 0-24.993-24.994-24.993-65.516 0-90.51L218.991 202.5c16.16 41.197 49.303 74.335 90.516 90.503zM104 432c0-13.255-10.745-24-24-24s-24 10.745-24 24 10.745 24 24 24 24-10.745 24-24z"],
+    };
+
+    var icons$1 = /*#__PURE__*/Object.freeze({
+        __proto__: null,
+        createCheckbox: createCheckbox$1,
+        createIcon: createIcon
+    });
+
+    function attachDialogCloseHandlerWithParent(parent, closeHandler) {
+
+        var container = document.createElement("div");
+        parent.appendChild(container);
+        container.appendChild(createIcon("times"));
+        container.addEventListener('click', function (e) {
+            e.preventDefault();
+            e.stopPropagation();
+            closeHandler();
+        });
+    }
+
+    var uiUtils = /*#__PURE__*/Object.freeze({
+        __proto__: null,
+        attachDialogCloseHandlerWithParent: attachDialogCloseHandlerWithParent
+    });
+
+    /**
+     * Make the target element movable by clicking and dragging on the handle.  This is not a general purprose function,
+     * it makes several options specific to igv dialogs, the primary one being that the
+     * target is absolutely positioned in pixel coordinates
+
+     */
+
+    let dragData;  // Its assumed we are only dragging one element at a time.
+
+    function makeDraggable(target, handle, constraint) {
+
+        handle.addEventListener('mousedown', dragStart.bind(target));
+
+        function dragStart(event) {
+
+            event.stopPropagation();
+            event.preventDefault();
+
+            const dragFunction = drag.bind(this);
+            const dragEndFunction = dragEnd.bind(this);
+            const computedStyle = getComputedStyle(this);
+
+            dragData =
+                {
+                    constraint,
+                    dragFunction,
+                    dragEndFunction,
+                    screenX: event.screenX,
+                    screenY: event.screenY,
+                    top: parseInt(computedStyle.top.replace("px", "")),
+                    left: parseInt(computedStyle.left.replace("px", ""))
+                };
+
+            document.addEventListener('mousemove', dragFunction);
+            document.addEventListener('mouseup', dragEndFunction);
+            document.addEventListener('mouseleave', dragEndFunction);
+            document.addEventListener('mouseexit', dragEndFunction);
+        }
+    }
+
+    function drag(event) {
+
+        if (!dragData) {
+            console.error("No drag data!");
+            return;
+        }
+        event.stopPropagation();
+        event.preventDefault();
+        const dx = event.screenX - dragData.screenX;
+        const dy = event.screenY - dragData.screenY;
+
+        const left = dragData.left + dx;
+        const  top = dragData.constraint ? Math.max(dragData.constraint.minY, dragData.top  + dy) : dragData.top  + dy;
+
+        this.style.left = `${ left }px`;
+        this.style.top  = `${  top }px`;
+    }
+
+    function dragEnd(event) {
+
+        if (!dragData) {
+            console.error("No drag data!");
+            return;
+        }
+        event.stopPropagation();
+        event.preventDefault();
+
+        const dragFunction = dragData.dragFunction;
+        const dragEndFunction = dragData.dragEndFunction;
+        document.removeEventListener('mousemove', dragFunction);
+        document.removeEventListener('mouseup', dragEndFunction);
+        document.removeEventListener('mouseleave', dragEndFunction);
+        document.removeEventListener('mouseexit', dragEndFunction);
+        dragData = undefined;
+    }
+
+    const httpMessages =
+        {
+            "401": "Access unauthorized",
+            "403": "Access forbidden",
+            "404": "Not found"
+        };
+
+
+    class AlertDialog {
+        /**
+         * Initialize a new alert dialog
+         * @param parent
+         * @param alertProps - Optional - properties such as scroll to error
+         */
+        constructor(parent, alertProps) {
+            this.alertProps = Object.assign({
+                /** When an alert is presented - focus occur */
+                shouldFocus: true,
+                /** When focus occur - scroll into that element in the view */
+                preventScroll: false
+            }, alertProps);
+
+            // container
+            this.container = div({class: "igv-ui-alert-dialog-container"});
+            parent.appendChild(this.container);
+            this.container.setAttribute('tabIndex', '-1');
+
+            // header
+            const header = div();
+            this.container.appendChild(header);
+
+            this.errorHeadline = div();
+            header.appendChild(this.errorHeadline);
+            this.errorHeadline.textContent = '';
+
+            // body container
+            let bodyContainer = div({class: 'igv-ui-alert-dialog-body'});
+            this.container.appendChild(bodyContainer);
+
+            // body copy
+            this.body = div({class: 'igv-ui-alert-dialog-body-copy'});
+            bodyContainer.appendChild(this.body);
+
+            // ok container
+            let ok_container = div();
+            this.container.appendChild(ok_container);
+
+            // ok
+            this.ok = div();
+            ok_container.appendChild(this.ok);
+            this.ok.textContent = 'OK';
+
+            const okHandler = () => {
+
+                if (typeof this.callback === 'function') {
+                    this.callback("OK");
+                    this.callback = undefined;
+                }
+                this.body.innerHTML = '';
+                hide(this.container);
+            };
+
+            this.ok.addEventListener('click', event => {
+
+                event.stopPropagation();
+
+                okHandler();
+            });
+
+            this.container.addEventListener('keypress', event => {
+
+                event.stopPropagation();
+
+                if ('Enter' === event.key) {
+                    okHandler();
+                }
+            });
+
+            makeDraggable(this.container, header);
+
+            hide(this.container);
+        }
+
+        present(alert, callback) {
+
+            this.errorHeadline.textContent = alert.message ? 'ERROR' : '';
+            let string = alert.message || alert;
+
+            if (httpMessages.hasOwnProperty(string)) {
+                string = httpMessages[string];
+            }
+
+            const clean = purify.sanitize(string);
+
+            this.body.innerHTML = clean;
+            this.callback = callback;
+            show(this.container);
+            if (this.alertProps.shouldFocus) {
+                this.container.focus(
+                    { preventScroll: this.alertProps.preventScroll }
+                );
+            }
+        }
+    }
+
+    class InputDialog {
+
+        constructor(parent) {
+
+            this.parent = parent;
+
+            // dialog container
+            this.container = div({class: 'igv-ui-generic-dialog-container'});
+            parent.appendChild(this.container);
+
+            // const { x, y, width, height } = this.container.getBoundingClientRect();
+            // console.log(`InputDialog - x ${ x } y ${ y } width ${ width } height ${ height }`)
+
+            // dialog header
+            const header = div({class: 'igv-ui-generic-dialog-header'});
+            this.container.appendChild(header);
+
+            // dialog label
+            this.label = div({class: 'igv-ui-generic-dialog-one-liner'});
+            this.container.appendChild(this.label);
+            this.label.text = 'Unlabeled';
+
+            // input container
+            this.input_container = div({class: 'igv-ui-generic-dialog-input'});
+            this.container.appendChild(this.input_container);
+            //
+            this.input = document.createElement("input");
+            this.input_container.appendChild(this.input);
+
+
+            // ok | cancel
+            const buttons = div({class: 'igv-ui-generic-dialog-ok-cancel'});
+            this.container.appendChild(buttons);
+
+            // ok
+            this.ok = div();
+            buttons.appendChild(this.ok);
+            this.ok.textContent = 'OK';
+
+            // cancel
+            this.cancel = div();
+            buttons.appendChild(this.cancel);
+            this.cancel.textContent = 'Cancel';
+
+            hide(this.container);
+
+            this.input.addEventListener('keyup', e => {
+                if (13 === e.keyCode) {
+                    if (typeof this.callback === 'function') {
+                        this.callback(this.input.value);
+                        this.callback = undefined;
+                    }
+                    this.input.value = undefined;
+                    hide(this.container);
+                }
+            });
+
+            this.ok.addEventListener('click', () => {
+                if (typeof this.callback === 'function') {
+                    this.callback(this.input.value);
+                    this.callback = undefined;
+                }
+                this.input.value = undefined;
+                hide(this.container);
+            });
+
+            const cancel = () => {
+                this.input.value = '';
+                hide(this.container);
+            };
+
+            this.cancel.addEventListener('click', cancel);
+
+            attachDialogCloseHandlerWithParent(header, cancel);
+            makeDraggable(this.container, header);
+
+        }
+
+        get value() {
+            return purify.sanitize(this.input.value)
+        }
+
+        present(options, e) {
+
+            this.label.textContent = options.label;
+            this.input.value = options.value;
+            this.callback = options.callback || options.click;
+
+            show(this.container);
+            this.clampLocation(e.clientX, e.clientY);
+
+        }
+
+        clampLocation(clientX, clientY) {
+
+            const {width: w, height: h} = this.container.getBoundingClientRect();
+            const wh = window.innerHeight;
+            const ww = window.innerWidth;
+
+            const y = Math.min(wh - h, clientY);
+            const x = Math.min(ww - w, clientX);
+            this.container.style.left = `${x}px`;
+            this.container.style.top = `${y}px`;
+
+        }
+    }
+
+    const appleCrayonPalette =
+        {
+            licorice: "#000000",
+            lead: "#1e1e1e",
+            tungsten: "#3a3a3a",
+            iron: "#545453",
+            steel: "#6e6e6e",
+            tin: "#878687",
+            nickel: "#888787",
+            aluminum: "#a09fa0",
+            magnesium: "#b8b8b8",
+            silver: "#d0d0d0",
+            mercury: "#e8e8e8",
+            snow: "#ffffff",
+            //
+            cayenne: "#891100",
+            mocha: "#894800",
+            aspargus: "#888501",
+            fern: "#458401",
+            clover: "#028401",
+            moss: "#018448",
+            teal: "#008688",
+            ocean: "#004a88",
+            midnight: "#001888",
+            eggplant: "#491a88",
+            plum: "#891e88",
+            maroon: "#891648",
+            //
+            maraschino: "#ff2101",
+            tangerine: "#ff8802",
+            lemon: "#fffa03",
+            lime: "#83f902",
+            spring: "#05f802",
+            seam_foam: "#03f987",
+            turquoise: "#00fdff",
+            aqua: "#008cff",
+            blueberry: "#002eff",
+            grape: "#8931ff",
+            magenta: "#ff39ff",
+            strawberry: "#ff2987",
+            //
+            salmon: "#ff726e",
+            cantaloupe: "#ffce6e",
+            banana: "#fffb6d",
+            honeydew: "#cefa6e",
+            flora: "#68f96e",
+            spindrift: "#68fbd0",
+            ice: "#68fdff",
+            sky: "#6acfff",
+            orchid: "#6e76ff",
+            lavender: "#d278ff",
+            bubblegum: "#ff7aff",
+            carnation: "#ff7fd3"
+        };
+
+    class GenericContainer {
+
+        constructor({parent,  top, left, width, height, border, closeHandler}) {
+
+            let container = div({class: 'igv-ui-generic-container'});
+            parent.appendChild(container);
+            hide(container);
+            this.container = container;
+
+            if(top !== undefined) {
+                this.container.style.top = `${ top }px`;
+            }
+            if(left !== undefined) {
+                this.container.style.left = `${ left }px`;
+            }
+            if (width !== undefined) {
+                this.container.style.width = `${ width }px`;
+            }
+            if (height !== undefined) {
+                this.container.style.height = `${ height }px`;
+            }
+            if(border) {
+                this.container.style.border = border;
+            }
+            //
+            // let bbox = parent.getBoundingClientRect();
+            // this.origin = {x: bbox.x, y: bbox.y};
+            // this.container.offset({left: this.origin.x, top: this.origin.y});
+
+            // header
+            const header = div();
+            this.container.appendChild(header);
+
+            // close button
+            attachDialogCloseHandlerWithParent(header, (e) => {
+                hide(this.container);
+                if(typeof closeHandler === "function") {
+                    closeHandler(e);
+                }
+            });
+
+            makeDraggable(this.container, header);
+        }
+
+        show() {
+            show(this.container);
+        }
+
+        hide() {
+            hide(this.container);
+        }
+
+        dispose() {
+            if(this.container.parent)  {
+                this.container.parent.removeChild(this.container);
+            }
+        }
+    }
+
+    class ColorPicker extends GenericContainer {
+
+        constructor({parent, top, left, width, height, defaultColors, colorHandler}) {
+
+            super({ parent, top, left, width, height, border: '1px solid gray'});
+
+            createColorSwatchSelector(this.container, colorHandler, defaultColors);
+        }
+
+    }
+
+    const createColorSwatchSelector = (container, colorHandler, defaultColors) => {
+
+        const hexColorStrings = Object.values(appleCrayonPalette);
+
+        for (let hexColorString of hexColorStrings) {
+            const swatch = div({ class: 'igv-ui-color-swatch' });
+            container.appendChild(swatch);
+            decorateSwatch(swatch, hexColorString, colorHandler);
+        }
+
+        if (defaultColors) {
+            for (let hexColorString of defaultColors) {
+                const swatch = div({ class: 'igv-ui-color-swatch' });
+                container.appendChild(swatch);
+                decorateSwatch(swatch, hexColorString, colorHandler);
+            }
+        }
+
+    };
+
+    const decorateSwatch = (swatch, hexColorString, colorHandler) => {
+
+        swatch.style.backgroundColor = hexColorString;
+
+        swatch.addEventListener('mouseenter', e => swatch.style.borderColor = hexColorString);
+
+        swatch.addEventListener('mouseleave', e => swatch.style.borderColor = 'white');
+
+        swatch.addEventListener('click', event => {
+            event.stopPropagation();
+            colorHandler(hexColorString);
+        });
+
+        swatch.addEventListener('touchend', event => {
+            event.stopPropagation();
+            colorHandler(hexColorString);
+        });
+
+    };
+
+    class Popover {
+
+        constructor(parent, title) {
+
+            this.parent = parent;
+
+            // popover
+            this.popover = div({ class: "igv-ui-popover" });
+            parent.appendChild(this.popover);
+
+            // header
+            const popoverHeader = div();
+            this.popover.appendChild(popoverHeader);
+
+            const titleElement = div();
+            popoverHeader.appendChild(titleElement);
+            if (title) {
+                titleElement.textContent = title;
+            }
+
+            attachDialogCloseHandlerWithParent(popoverHeader,  () => this.hide());
+            makeDraggable(this.popover, popoverHeader);
+
+            // content
+            this.popoverContent = div();
+            this.popover.appendChild(this.popoverContent);
+
+            this.popover.style.display = 'none';
+
+
+        }
+
+        presentContentWithEvent(e, content) {
+
+            this.popover.style.display = 'block';
+
+            this.popoverContent.innerHTML = content;
+
+            present$1(e, this.popover, this.popoverContent);
+
+        }
+
+        presentMenu(e, menuItems) {
+
+            if (0 === menuItems.length) {
+                return
+            }
+
+            this.popover.style.display = 'block';
+
+            const menuElements = createMenuElements$1(menuItems, this.popover);
+            for (let item of menuElements) {
+                this.popoverContent.appendChild(item.object);
+            }
+
+            present$1(e, this.popover, this.popoverContent);
+        }
+
+        hide() {
+            this.popover.style.display = 'none';
+            this.dispose();
+        }
+
+        dispose() {
+
+            if (this.popover) {
+                this.popover.parentNode.removeChild(this.popover);
+            }
+
+            const keys = Object.keys(this);
+            for (let key of keys) {
+                this[ key ] = undefined;
+            }
+        }
+
+    }
+
+    function present$1(e, popover, popoverContent) {
+
+        const { x, y, width } = translateMouseCoordinates(e, popover.parentNode);
+        popover.style.top  = `${ y }px`;
+
+        const { width: w } = popover.getBoundingClientRect();
+
+        const xmax = x + w;
+        const delta = xmax - width;
+
+        popover.style.left = `${ xmax > width ? (x - delta) : x }px`;
+        popoverContent.style.maxWidth = `${ Math.min(w, width) }px`;
+
+
+    }
+
+    function createMenuElements$1(itemList, popover) {
+
+        const list  = itemList.map(function (item, i) {
+            let elem;
+
+            if (typeof item === 'string') {
+                elem = div();
+                elem.innerHTML = item;
+            } else if (typeof item === 'Node') {
+                elem = item;
+            } else {
+                if (typeof item.init === 'function') {
+                    item.init();
+                }
+
+                if ("checkbox" === item.type) {
+                    elem = createCheckbox$1("Show all bases", item.value);
+                } else if("color" === item.type) {
+                    const colorPicker = new ColorPicker({
+                        parent: popover.parentElement,
+                        width: 364,
+                        //defaultColor: 'aqua',
+                        colorHandler: (color) => item.click(color)
+                    });
+                    elem = div();
+                    if (typeof item.label === 'string') {
+                        elem.innerHTML = item.label;
+                    }
+                    const clickHandler =  e => {
+                        colorPicker.show();
+                        hide(popover);
+                        e.preventDefault();
+                        e.stopPropagation();
+                    };
+                    elem.addEventListener('click', clickHandler);
+                    elem.addEventListener('touchend', clickHandler);
+                    elem.addEventListener('mouseup', function (e) {
+                        e.preventDefault();
+                        e.stopPropagation();
+                    });
+                }
+
+                else {
+                    elem = div();
+                    if (typeof item.label === 'string') {
+                        elem.innerHTML = item.label;
+                    }
+                }
+
+                if (item.click && "color" !== item.type) {
+                    elem.addEventListener('click', handleClick);
+                    elem.addEventListener('touchend', handleClick);
+                    elem.addEventListener('mouseup', function (e) {
+                        e.preventDefault();
+                        e.stopPropagation();
+                    });
+
+                    // eslint-disable-next-line no-inner-declarations
+                    function handleClick(e) {
+                        item.click();
+                        hide(popover);
+                        e.preventDefault();
+                        e.stopPropagation();
+                    }
+                }
+            }
+
+
+            return { object: elem, init: item.init };
+        });
+
+        return list;
+    }
+
+    class GenericColorPicker extends GenericContainer {
+
+        constructor({parent, width}) {
+            super({parent, width, border: '1px solid gray'});
+        }
+
+        configure(defaultColors, colorHandlers) {
+
+            this.colorHandlers = colorHandlers;
+
+            // active color handler defaults to handler with 'color' as key
+            this.setActiveColorHandler('color');
+
+            this.createSwatches(defaultColors);
+
+        }
+
+        setActiveColorHandler(option) {
+            this.activeColorHandler = this.colorHandlers[option];
+        }
+
+        createSwatches(defaultColors) {
+
+            this.container.querySelectorAll('.igv-ui-color-swatch').forEach(swatch => swatch.remove());
+
+            const hexColorStrings = Object.values(appleCrayonPalette);
+
+            for (let hexColorString of hexColorStrings) {
+                const swatch = div({class: 'igv-ui-color-swatch'});
+                this.container.appendChild(swatch);
+                this.decorateSwatch(swatch, hexColorString);
+            }
+
+            if (defaultColors) {
+                for (let hexColorString of defaultColors) {
+                    const swatch = div({class: 'igv-ui-color-swatch'});
+                    this.container.appendChild(swatch);
+                    this.decorateSwatch(swatch, hexColorString);
+                }
+            }
+
+        }
+
+        decorateSwatch(swatch, hexColorString) {
+
+            swatch.style.backgroundColor = hexColorString;
+
+            swatch.addEventListener('mouseenter', () => swatch.style.borderColor = hexColorString);
+
+            swatch.addEventListener('mouseleave', () => swatch.style.borderColor = 'white');
+
+            swatch.addEventListener('click', event => {
+                event.stopPropagation();
+                this.activeColorHandler(hexColorString);
+            });
+
+            swatch.addEventListener('touchend', event => {
+                event.stopPropagation();
+                this.activeColorHandler(hexColorString);
+            });
+
+        }
+
+    }
+
+    function embedCSS$2() {
+        const style = document.createElement('style');
+        style.setAttribute('type', 'text/css');
+        style.setAttribute('title', 'igv-ui.css');
+        style.innerHTML = `.igv-ui-popover {
+  cursor: default;
+  position: absolute;
+  z-index: 2048;
+  border-color: #7F7F7F;
+  border-radius: 4px;
+  border-style: solid;
+  border-width: 1px;
+  font-family: "Open Sans", sans-serif;
+  font-size: small;
+  background-color: white;
+}
+.igv-ui-popover > div:first-child {
+  display: flex;
+  flex-direction: row;
+  flex-wrap: nowrap;
+  justify-content: space-between;
+  align-items: center;
+  width: 100%;
+  height: 24px;
+  cursor: move;
+  border-top-left-radius: 4px;
+  border-top-right-radius: 4px;
+  border-bottom-color: #7F7F7F;
+  border-bottom-style: solid;
+  border-bottom-width: thin;
+  background-color: #eee;
+}
+.igv-ui-popover > div:first-child > div:first-child {
+  margin-left: 4px;
+}
+.igv-ui-popover > div:first-child > div:last-child {
+  margin-right: 4px;
+  height: 12px;
+  width: 12px;
+  color: #7F7F7F;
+}
+.igv-ui-popover > div:first-child > div:last-child:hover {
+  cursor: pointer;
+  color: #444;
+}
+.igv-ui-popover > div:last-child {
+  overflow-y: auto;
+  overflow-x: hidden;
+  max-height: 400px;
+  max-width: 800px;
+  background-color: white;
+}
+.igv-ui-popover > div:last-child > div {
+  user-select: all;
+  margin-left: 4px;
+  margin-right: 4px;
+  min-width: 220px;
+  overflow-x: hidden;
+  text-overflow: ellipsis;
+  white-space: nowrap;
+}
+.igv-ui-popover > div:last-child > div > span {
+  font-weight: bolder;
+}
+.igv-ui-popover > div:last-child hr {
+  width: 100%;
+}
+
+.igv-ui-alert-dialog-container {
+  box-sizing: content-box;
+  position: absolute;
+  z-index: 2048;
+  top: 50%;
+  left: 50%;
+  width: 400px;
+  height: 200px;
+  border-color: #7F7F7F;
+  border-radius: 4px;
+  border-style: solid;
+  border-width: thin;
+  outline: none;
+  font-family: "Open Sans", sans-serif;
+  font-size: 15px;
+  font-weight: 400;
+  background-color: white;
+  display: flex;
+  flex-flow: column;
+  flex-wrap: nowrap;
+  justify-content: space-between;
+  align-items: center;
+}
+.igv-ui-alert-dialog-container > div:first-child {
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: flex-start;
+  align-items: center;
+  width: 100%;
+  height: 24px;
+  cursor: move;
+  border-top-left-radius: 4px;
+  border-top-right-radius: 4px;
+  border-bottom-color: #7F7F7F;
+  border-bottom-style: solid;
+  border-bottom-width: thin;
+  background-color: #eee;
+}
+.igv-ui-alert-dialog-container > div:first-child div:first-child {
+  padding-left: 8px;
+}
+.igv-ui-alert-dialog-container .igv-ui-alert-dialog-body {
+  -webkit-user-select: text;
+  -moz-user-select: text;
+  -ms-user-select: text;
+  user-select: text;
+  color: #373737;
+  width: 100%;
+  height: calc(100% - 24px - 64px);
+  overflow-y: scroll;
+}
+.igv-ui-alert-dialog-container .igv-ui-alert-dialog-body .igv-ui-alert-dialog-body-copy {
+  margin: 16px;
+  width: auto;
+  height: auto;
+  overflow-wrap: break-word;
+  word-break: break-word;
+  background-color: white;
+  border: unset;
+}
+.igv-ui-alert-dialog-container > div:last-child {
+  width: 100%;
+  margin-bottom: 10px;
+  background-color: white;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: center;
+  align-items: center;
+}
+.igv-ui-alert-dialog-container > div:last-child div {
+  margin: unset;
+  width: 40px;
+  height: 30px;
+  line-height: 30px;
+  text-align: center;
+  color: white;
+  font-family: "Open Sans", sans-serif;
+  font-size: small;
+  font-weight: 400;
+  border-color: #2B81AF;
+  border-style: solid;
+  border-width: thin;
+  border-radius: 4px;
+  background-color: #2B81AF;
+}
+.igv-ui-alert-dialog-container > div:last-child div:hover {
+  cursor: pointer;
+  border-color: #25597f;
+  background-color: #25597f;
+}
+
+.igv-ui-color-swatch {
+  position: relative;
+  box-sizing: content-box;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: wrap;
+  justify-content: center;
+  align-items: center;
+  width: 32px;
+  height: 32px;
+  border-style: solid;
+  border-width: 2px;
+  border-color: white;
+  border-radius: 4px;
+}
+
+.igv-ui-color-swatch:hover {
+  border-color: dimgray;
+}
+
+.igv-ui-colorpicker-menu-close-button {
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: flex-end;
+  align-items: center;
+  width: 100%;
+  height: 32px;
+  margin-top: 4px;
+  margin-bottom: 4px;
+  padding-right: 8px;
+}
+.igv-ui-colorpicker-menu-close-button i.fa {
+  display: block;
+  margin-left: 4px;
+  margin-right: 4px;
+  color: #5f5f5f;
+}
+.igv-ui-colorpicker-menu-close-button i.fa:hover,
+.igv-ui-colorpicker-menu-close-button i.fa:focus,
+.igv-ui-colorpicker-menu-close-button i.fa:active {
+  cursor: pointer;
+  color: #0f0f0f;
+}
+
+.igv-ui-generic-dialog-container {
+  box-sizing: content-box;
+  position: fixed;
+  top: 0;
+  left: 0;
+  width: 300px;
+  height: 200px;
+  border-color: #7F7F7F;
+  border-radius: 4px;
+  border-style: solid;
+  border-width: thin;
+  font-family: "Open Sans", sans-serif;
+  font-size: medium;
+  font-weight: 400;
+  z-index: 2048;
+  background-color: white;
+  display: flex;
+  flex-flow: column;
+  flex-wrap: nowrap;
+  justify-content: flex-start;
+  align-items: center;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header {
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: flex-end;
+  align-items: center;
+  width: 100%;
+  height: 24px;
+  cursor: move;
+  border-top-left-radius: 4px;
+  border-top-right-radius: 4px;
+  border-bottom-color: #7F7F7F;
+  border-bottom-style: solid;
+  border-bottom-width: thin;
+  background-color: #eee;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header div {
+  margin-right: 4px;
+  margin-bottom: 2px;
+  height: 12px;
+  width: 12px;
+  color: #7F7F7F;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header div:hover {
+  cursor: pointer;
+  color: #444;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-one-liner {
+  color: #373737;
+  width: 95%;
+  height: 24px;
+  line-height: 24px;
+  text-align: left;
+  margin-top: 8px;
+  padding-left: 8px;
+  overflow-wrap: break-word;
+  background-color: white;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input {
+  margin-top: 8px;
+  width: 95%;
+  height: 24px;
+  color: #373737;
+  line-height: 24px;
+  padding-left: 8px;
+  background-color: white;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: flex-start;
+  align-items: center;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input div {
+  width: 30%;
+  height: 100%;
+  font-size: 16px;
+  text-align: right;
+  padding-right: 8px;
+  background-color: white;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input input {
+  display: block;
+  height: 100%;
+  width: 100%;
+  padding-left: 4px;
+  font-family: "Open Sans", sans-serif;
+  font-weight: 400;
+  color: #373737;
+  text-align: left;
+  outline: none;
+  border-style: solid;
+  border-width: thin;
+  border-color: #7F7F7F;
+  background-color: white;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input input {
+  width: 50%;
+  font-size: 16px;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input {
+  margin-top: 8px;
+  width: calc(100% - 16px);
+  height: 24px;
+  color: #373737;
+  line-height: 24px;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: space-around;
+  align-items: center;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input input {
+  display: block;
+  height: 100%;
+  width: 100%;
+  padding-left: 4px;
+  font-family: "Open Sans", sans-serif;
+  font-weight: 400;
+  color: #373737;
+  text-align: left;
+  outline: none;
+  border-style: solid;
+  border-width: thin;
+  border-color: #7F7F7F;
+  background-color: white;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input input {
+  font-size: 16px;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel {
+  width: 100%;
+  height: 28px;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: space-around;
+  align-items: center;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div {
+  margin-top: 32px;
+  color: white;
+  font-family: "Open Sans", sans-serif;
+  font-size: 14px;
+  font-weight: 400;
+  width: 75px;
+  height: 28px;
+  line-height: 28px;
+  text-align: center;
+  border-color: transparent;
+  border-style: solid;
+  border-width: thin;
+  border-radius: 2px;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:first-child {
+  margin-left: 32px;
+  margin-right: 0;
+  background-color: #5ea4e0;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:last-child {
+  margin-left: 0;
+  margin-right: 32px;
+  background-color: #c4c4c4;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:first-child:hover {
+  cursor: pointer;
+  background-color: #3b5c7f;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:last-child:hover {
+  cursor: pointer;
+  background-color: #7f7f7f;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok {
+  width: 100%;
+  height: 36px;
+  margin-top: 32px;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: space-around;
+  align-items: center;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok div {
+  width: 98px;
+  height: 36px;
+  line-height: 36px;
+  text-align: center;
+  color: white;
+  font-family: "Open Sans", sans-serif;
+  font-size: medium;
+  font-weight: 400;
+  border-color: white;
+  border-style: solid;
+  border-width: thin;
+  border-radius: 4px;
+  background-color: #2B81AF;
+}
+.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok div:hover {
+  cursor: pointer;
+  background-color: #25597f;
+}
+
+.igv-ui-generic-container {
+  box-sizing: content-box;
+  position: absolute;
+  z-index: 2048;
+  background-color: white;
+  cursor: pointer;
+  display: flex;
+  flex-direction: row;
+  flex-wrap: wrap;
+  justify-content: flex-start;
+  align-items: center;
+}
+.igv-ui-generic-container > div:first-child {
+  cursor: move;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: flex-end;
+  align-items: center;
+  height: 24px;
+  width: 100%;
+  background-color: #dddddd;
+}
+.igv-ui-generic-container > div:first-child > div {
+  display: block;
+  color: #5f5f5f;
+  cursor: pointer;
+  width: 14px;
+  height: 14px;
+  margin-right: 8px;
+  margin-bottom: 4px;
+}
+
+.igv-ui-dialog {
+  z-index: 2048;
+  position: fixed;
+  width: fit-content;
+  height: fit-content;
+  display: flex;
+  flex-flow: column;
+  flex-wrap: nowrap;
+  justify-content: flex-start;
+  background-color: white;
+  border-color: #7F7F7F;
+  border-radius: 4px;
+  border-style: solid;
+  border-width: thin;
+  font-family: "Open Sans", sans-serif;
+  font-size: medium;
+  font-weight: 400;
+}
+.igv-ui-dialog .igv-ui-dialog-header {
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: flex-end;
+  align-items: center;
+  width: 100%;
+  height: 24px;
+  cursor: move;
+  border-top-left-radius: 4px;
+  border-top-right-radius: 4px;
+  border-bottom-color: #7F7F7F;
+  border-bottom-style: solid;
+  border-bottom-width: thin;
+  background-color: #eee;
+}
+.igv-ui-dialog .igv-ui-dialog-header div {
+  margin-right: 4px;
+  margin-bottom: 2px;
+  height: 12px;
+  width: 12px;
+  color: #7F7F7F;
+}
+.igv-ui-dialog .igv-ui-dialog-header div:hover {
+  cursor: pointer;
+  color: #444;
+}
+.igv-ui-dialog .igv-ui-dialog-one-liner {
+  width: 95%;
+  height: 24px;
+  line-height: 24px;
+  text-align: left;
+  margin: 8px;
+  overflow-wrap: break-word;
+  background-color: white;
+  font-weight: bold;
+}
+.igv-ui-dialog .igv-ui-dialog-ok-cancel {
+  width: 100%;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: space-around;
+  align-items: center;
+}
+.igv-ui-dialog .igv-ui-dialog-ok-cancel div {
+  margin: 16px;
+  margin-top: 32px;
+  color: white;
+  font-family: "Open Sans", sans-serif;
+  font-size: 14px;
+  font-weight: 400;
+  width: 75px;
+  height: 28px;
+  line-height: 28px;
+  text-align: center;
+  border-color: transparent;
+  border-style: solid;
+  border-width: thin;
+  border-radius: 2px;
+}
+.igv-ui-dialog .igv-ui-dialog-ok-cancel div:first-child {
+  background-color: #5ea4e0;
+}
+.igv-ui-dialog .igv-ui-dialog-ok-cancel div:last-child {
+  background-color: #c4c4c4;
+}
+.igv-ui-dialog .igv-ui-dialog-ok-cancel div:first-child:hover {
+  cursor: pointer;
+  background-color: #3b5c7f;
+}
+.igv-ui-dialog .igv-ui-dialog-ok-cancel div:last-child:hover {
+  cursor: pointer;
+  background-color: #7f7f7f;
+}
+.igv-ui-dialog .igv-ui-dialog-ok {
+  width: 100%;
+  height: 36px;
+  margin-top: 32px;
+  display: flex;
+  flex-flow: row;
+  flex-wrap: nowrap;
+  justify-content: space-around;
+  align-items: center;
+}
+.igv-ui-dialog .igv-ui-dialog-ok div {
+  width: 98px;
+  height: 36px;
+  line-height: 36px;
+  text-align: center;
+  color: white;
+  font-family: "Open Sans", sans-serif;
+  font-size: medium;
+  font-weight: 400;
+  border-color: white;
+  border-style: solid;
+  border-width: thin;
+  border-radius: 4px;
+  background-color: #2B81AF;
+}
+.igv-ui-dialog .igv-ui-dialog-ok div:hover {
+  cursor: pointer;
+  background-color: #25597f;
+}
+
+.igv-ui-panel, .igv-ui-panel-row, .igv-ui-panel-column {
+  z-index: 2048;
+  background-color: white;
+  font-family: "Open Sans", sans-serif;
+  font-size: medium;
+  font-weight: 400;
+  display: flex;
+  justify-content: flex-start;
+  align-items: flex-start;
+}
+
+.igv-ui-panel-column {
+  display: flex;
+  flex-direction: column;
+}
+
+.igv-ui-panel-row {
+  display: flex;
+  flex-direction: row;
+}
+
+.igv-ui-textbox {
+  background-color: white;
+  font-family: "Open Sans", sans-serif;
+  font-size: medium;
+  font-weight: 400;
+  display: flex;
+  justify-content: flex-start;
+  align-items: flex-start;
+}
+
+.igv-ui-table {
+  background-color: white;
+}
+
+.igv-ui-table thead {
+  position: sticky;
+  top: 0;
+}
+
+.igv-ui-table th {
+  text-align: left;
+}
+
+.igv-ui-table td {
+  padding-right: 20px;
+}
+
+.igv-ui-table tr:hover {
+  background-color: lightblue;
+}
+
+/*# sourceMappingURL=igv-ui.css.map */
+`;
+        document.head.append(style);
+    }
+
+    if (typeof document !== 'undefined') {
+
+        if (!stylesheetExists("igv-ui.css")) {
+            embedCSS$2();
+        }
+
+        function stylesheetExists(stylesheetName) {
+            for (let ss of document.styleSheets) {
+                ss = ss.href ? ss.href.replace(/^.*[\\\/]/, '') : '';
+                if (ss === stylesheetName) {
+                    return true
+                }
+            }
+            return false
+        }
+    }
+
+    function createCheckbox(name, initialState) {
+
+        const container = domUtils.div({class: 'igv-menu-popup-check-container'});
+
+        const div = domUtils.div();
+        container.appendChild(div);
+
+        const svg = icons$1.createIcon('check', (true === initialState ? '#444' : 'transparent'));
+        div.appendChild(svg);
+
+        const label = domUtils.div();
+        label.innerText = name;
+        container.appendChild(label);
+
+        return container
+    }
+
+    /**
+     * Configure item list for track "gear" menu.
+     * @param trackView
+     */
+    const MenuUtils = {
+
+        trackMenuItemList: function (trackView) {
+
+            const vizWindowTypes = new Set(['alignment', 'annotation', 'variant', 'eqtl', 'snp']);
+
+            const hasVizWindow = trackView.track.config && trackView.track.config.visibilityWindow !== undefined;
+
+            let menuItems = [];
+
+            if (trackView.track.config.type !== 'sequence') {
+                menuItems.push(trackRenameMenuItem(trackView));
+                menuItems.push(trackHeightMenuItem(trackView));
+            }
+
+            if (this.showColorPicker(trackView.track)) {
+                menuItems.push('<hr/>');
+                menuItems.push(colorPickerMenuItem({trackView, label: "Set track color", option: "color"}));
+                menuItems.push(unsetColorMenuItem({trackView, label: "Unset track color"}));
+               if(trackView.track.config.type === 'wig' || trackView.track.config.type === 'annotation') {
+                   menuItems.push(colorPickerMenuItem({trackView, label: "Set alt color", option: "altColor"}));
+                   menuItems.push(unsetAltColorMenuItem({trackView, label: "Unset alt color"}));
+               }
+            }
+
+            if (trackView.track.menuItemList) {
+                menuItems = menuItems.concat(trackView.track.menuItemList());
+            }
+
+            if (hasVizWindow || vizWindowTypes.has(trackView.track.type)) {
+                menuItems.push('<hr/>');
+                menuItems.push(visibilityWindowMenuItem(trackView));
+            }
+
+            if (trackView.track.removable !== false) {
+                menuItems.push('<hr/>');
+                menuItems.push(trackRemovalMenuItem(trackView));
+            }
+
+            return menuItems
+        },
+
+        numericDataMenuItems: function (trackView) {
+
+            const menuItems = [];
+
+            menuItems.push('<hr/>');
+
+            // Data range
+            const object = $$1('<div>');
+            object.text('Set data range');
+
+            const click = () => {
+                trackView.browser.dataRangeDialog.configure(trackView);
+                trackView.browser.dataRangeDialog.present($$1(trackView.browser.columnContainer));
+            };
+            menuItems.push({object, click});
+
+            if (trackView.track.logScale !== undefined) {
+                menuItems.push({
+                        object: $$1(createCheckbox("Log scale", trackView.track.logScale)),
+                        click: () => {
+                            trackView.track.logScale = !trackView.track.logScale;
+                            trackView.repaintViews();
+                        }
+                    }
+                );
+            }
+
+            menuItems.push({
+                    object: $$1(createCheckbox("Autoscale", trackView.track.autoscale)),
+                    click: () => {
+                        trackView.track.autoscale = !trackView.track.autoscale;
+                        trackView.updateViews();
+                    }
+                }
+            );
+
+
+            return menuItems
+        },
+
+        trackMenuItemListHelper: function (itemList, menuPopup) {
+
+            var list = [];
+
+            if (itemList.length > 0) {
+
+                list = itemList.map(function (item, i) {
+                    var $e;
+
+                    // name and object fields checked for backward compatibility
+                    if (item.name) {
+                        $e = $$1('<div>');
+                        $e.text(item.name);
+                    } else if (item.object) {
+                        $e = item.object;
+                    } else if (typeof item.label === 'string') {
+                        $e = $$1('<div>');
+                        $e.html(item.label);
+                    } else if (typeof item === 'string') {
+
+                        if (item.startsWith("<")) {
+                            $e = $$1(item);
+                        } else {
+                            $e = $$1("<div>" + item + "</div>");
+                        }
+                    }
+
+                    if (0 === i) {
+                        $e.addClass('igv-track-menu-border-top');
+                    }
+
+                    if (item.click) {
+                        $e.on('click', handleClick);
+                        $e.on('touchend', function (e) {
+                            handleClick(e);
+                        });
+                        $e.on('mouseup', function (e) {
+                            e.preventDefault();
+                            e.stopPropagation();
+                        });
+
+                        // eslint-disable-next-line no-inner-declarations
+                        function handleClick(e) {
+                            item.click(e);
+                            menuPopup.hide();
+                            e.preventDefault();
+                            e.stopPropagation();
+                        }
+                    }
+
+                    return {object: $e, init: (item.init || undefined)}
+                });
+            }
+
+            return list
+        },
+
+        showColorPicker(track) {
+            return (
+                undefined === track.type ||
+                "bedtype" === track.type ||
+                "alignment" === track.type ||
+                "annotation" === track.type ||
+                "variant" === track.type ||
+                "wig" === track.type) ||
+                'interact' === track.type
+        },
+
+        createMenuItem(label, action) {
+            const object = $$1('<div>');
+            object.text(label);
+            return {object, click: action}
+        }
+    };
+
+
+    function visibilityWindowMenuItem(trackView) {
+
+        const click = e => {
+
+            const callback = () => {
+
+                let value = trackView.browser.inputDialog.value;
+                value = '' === value || undefined === value ? -1 : value.trim();
+
+                trackView.track.visibilityWindow = Number.parseInt(value);
+                trackView.track.config.visibilityWindow = Number.parseInt(value);
+
+                trackView.updateViews();
+            };
+
+            const config =
+                {
+                    label: 'Visibility Window',
+                    value: (trackView.track.visibilityWindow),
+                    callback
+                };
+            trackView.browser.inputDialog.present(config, e);
+
+        };
+
+        const object = $$1('<div>');
+        object.text('Set visibility window');
+        return {object, click}
+
+    }
+
+    function trackRemovalMenuItem(trackView) {
+
+        const object = $$1('<div>');
+        object.text('Remove track');
+
+        return {object, click: () => trackView.browser.removeTrack(trackView.track)}
+
+    }
+
+    function colorPickerMenuItem({trackView, label, option}) {
+
+        const $e = $$1('<div>');
+        $e.text(label);
+
+        return {
+            object: $e,
+            click: () => trackView.presentColorPicker(option)
+        }
+    }
+
+    function unsetColorMenuItem({trackView, label}) {
+
+        const $e = $$1('<div>');
+        $e.text(label);
+
+        return {
+            object: $e,
+            click: () => {
+                trackView.track.color = undefined;
+                trackView.repaintViews();
+            }
+        }
+    }
+
+    function unsetAltColorMenuItem({trackView, label}) {
+
+        const $e = $$1('<div>');
+        $e.text(label);
+
+        return {
+            object: $e,
+            click: () => {
+                trackView.track.altColor = undefined;
+                trackView.repaintViews();
+            }
+        }
+    }
+
+    function trackRenameMenuItem(trackView) {
+
+        const click = e => {
+
+            const callback = function () {
+                let value = trackView.browser.inputDialog.value;
+                value = ('' === value || undefined === value) ? 'untitled' : value.trim();
+                trackView.track.name = value;
+            };
+
+            const config =
+                {
+                    label: 'Track Name',
+                    value: (getTrackLabelText(trackView.track) || 'unnamed'),
+                    callback
+                };
+
+            trackView.browser.inputDialog.present(config, e);
+
+        };
+
+        const object = $$1('<div>');
+        object.text('Set track name');
+        return {object, click}
+
+
+    }
+
+    function trackHeightMenuItem(trackView) {
+
+        const click = e => {
+
+            const callback = () => {
+
+                const number = Number(trackView.browser.inputDialog.value, 10);
+
+                if (undefined !== number) {
+
+                    // If explicitly setting the height adust min or max, if neccessary.
+                    if (trackView.track.minHeight !== undefined && trackView.track.minHeight > number) {
+                        trackView.track.minHeight = number;
+                    }
+                    if (trackView.track.maxHeight !== undefined && trackView.track.maxHeight < number) {
+                        trackView.track.minHeight = number;
+                    }
+                    trackView.setTrackHeight(number, true);
+
+                    trackView.checkContentHeight();
+                    trackView.repaintViews();
+
+
+                    // Explicitly setting track height turns off autoHeight
+                    trackView.track.autoHeight = false;
+                }
+
+            };
+
+            const config =
+                {
+                    label: 'Track Height',
+                    value: trackView.track.height,
+                    callback
+                };
+
+            trackView.browser.inputDialog.present(config, e);
+
+        };
+
+        const object = $$1('<div>');
+        object.text('Set track height');
+        return {object, click}
+
+
+    }
+
+    function getTrackLabelText(track) {
+        var vp,
+            txt;
+
+        vp = track.trackView.viewports[0];
+        txt = vp.$trackLabel.text();
+
+        return txt
+    }
+
+    class DataRangeDialog {
+
+        constructor(browser, $parent, alert) {
+
+            this.browser = browser;
+
+            // dialog container
+            this.$container = $$1("<div>", {class: 'igv-generic-dialog-container'});
+            $parent.append(this.$container);
+            this.$container.offset({left: 0, top: 0});
+
+            // dialog header
+            const $header = $$1("<div>", {class: 'igv-generic-dialog-header'});
+            this.$container.append($header);
+            uiUtils.attachDialogCloseHandlerWithParent($header[0], () => {
+                this.$minimum_input.val(undefined);
+                this.$maximum_input.val(undefined);
+                this.$container.offset({left: 0, top: 0});
+                this.$container.hide();
+            });
+
+
+            // minimun
+            this.$minimum = $$1("<div>", {class: 'igv-generic-dialog-label-input'});
+            this.$container.append(this.$minimum);
+            const $mindiv = $$1('<div>');
+            $mindiv.text('Minimum');
+            this.$minimum.append($mindiv);
+            this.$minimum_input = $$1("<input>");
+            this.$minimum.append(this.$minimum_input);
+
+
+            // maximum
+            this.$maximum = $$1("<div>", {class: 'igv-generic-dialog-label-input'});
+            this.$container.append(this.$maximum);
+            const $maxdiv = $$1('<div>');
+            $maxdiv.text('Maximum');
+            this.$maximum.append($maxdiv);
+            this.$maximum_input = $$1("<input>");
+            this.$maximum.append(this.$maximum_input);
+
+            // ok | cancel
+            const $buttons = $$1("<div>", {class: 'igv-generic-dialog-ok-cancel'});
+            this.$container.append($buttons);
+
+            // ok
+            this.$ok = $$1("<div>");
+            $buttons.append(this.$ok);
+            this.$ok.text('OK');
+
+            // cancel
+            this.$cancel = $$1("<div>");
+            $buttons.append(this.$cancel);
+            this.$cancel.text('Cancel');
+
+            this.$cancel.on('click', () => {
+                this.$minimum_input.val(undefined);
+                this.$maximum_input.val(undefined);
+                this.$container.offset({left: 0, top: 0});
+                this.$container.hide();
+            });
+
+            //this.$container.draggable({ handle:$header.get(0) });
+            makeDraggable(this.$container.get(0), $header.get(0));
+
+            this.$container.hide();
+        }
+
+        configure(trackView) {
+
+            const dataRange = trackView.dataRange();
+            let min;
+            let max;
+            if (dataRange) {
+                min = dataRange.min;
+                max = dataRange.max;
+            } else {
+                min = 0;
+                max = 100;
+            }
+
+            this.$minimum_input.val(min);
+            this.$maximum_input.val(max);
+
+            this.$minimum_input.unbind();
+            this.$minimum_input.on('keyup', (e) => {
+                if (13 === e.keyCode) {
+                    this.processResults(trackView);
+                }
+            });
+
+            this.$maximum_input.unbind();
+            this.$maximum_input.on('keyup', (e) => {
+                if (13 === e.keyCode) {
+                    this.processResults(trackView);
+                }
+            });
+
+            this.$ok.unbind();
+            this.$ok.on('click', (e) => {
+                this.processResults(trackView);
+            });
+        }
+
+
+        processResults(trackView) {
+
+            const min = Number(this.$minimum_input.val());
+            const max = Number(this.$maximum_input.val());
+            if (isNaN(min) || isNaN(max)) {
+                this.browser.alert.present(new Error('Must input numeric values'), undefined);
+            } else {
+                trackView.setDataRange(min, max);
+            }
+
+            this.$minimum_input.val(undefined);
+            this.$maximum_input.val(undefined);
+            this.$container.offset({left: 0, top: 0});
+            this.$container.hide();
+        }
+
+        present($parent) {
+
+            const offset_top = $parent.offset().top;
+            const scroll_top = $$1('body').scrollTop();
+
+            this.$container.offset({left: $parent.width() - this.$container.width(), top: (offset_top + scroll_top)});
+            this.$container.show();
+        }
+    }
+
+    /**
+     * Covers string literals and String objects
+     * @param x
+     * @returns {boolean}
+     */
+    function isString$2(x) {
+        return typeof x === "string" || x instanceof String
+    }
+
+
+    // StackOverflow: http://stackoverflow.com/a/10810674/116169
+    function numberFormatter$1(rawNumber) {
+
+        var dec = String(rawNumber).split(/[.,]/),
+            sep = ',',
+            decsep = '.';
+
+        return dec[0].split('').reverse().reduce(function (prev, now, i) {
+            return i % 3 === 0 ? prev + sep + now : prev + now;
+        }).split('').reverse().join('') + (dec[1] ? decsep + dec[1] : '');
+    }
+
+    const splitLines$5 = function (string) {
+        return string.split(/\n|\r\n|\r/g);
+    };
+
+
+    function splitStringRespectingQuotes(string, delim) {
+
+        var tokens = [],
+            len = string.length,
+            i,
+            n = 0,
+            quote = false,
+            c;
+
+        if (len > 0) {
+
+            tokens[n] = string.charAt(0);
+            for (i = 1; i < len; i++) {
+                c = string.charAt(i);
+                if (c === '"') {
+                    quote = !quote;
+                } else if (!quote && c === delim) {
+                    n++;
+                    tokens[n] = "";
+                } else {
+                    tokens[n] += c;
+                }
+            }
+        }
+        return tokens;
+    }
+
+    function stripQuotes$1(str) {
+        if(str === undefined) {
+            return str;
+        }
+        if(str.startsWith("'") || str.startsWith('"')) {
+            str = str.substring(1);
+        }
+        if (str.endsWith("'") || str.endsWith('"')) {
+            str = str.substring(0, str.length - 1);
+        }
+        return str;
+    }
+
+    function capitalize(str) {
+        return str.length > 0 ? str.charAt(0).toUpperCase() + str.slice(1) : str;
+    }
+
+
+    /**
+     * Parse a locus string and return a range object.  Locus string is of the form chr:start-end.  End is optional
+     *
+     */
+    function parseLocusString$1(string) {
+
+        const t1 = string.split(":");
+        const t2 = t1[1].split("-");
+
+        const range = {
+            chr: t1[0],
+            start: Number.parseInt(t2[0].replace(/,/g, '')) - 1
+        };
+
+        if (t2.length > 1) {
+            range.end = Number.parseInt(t2[1].replace(/,/g, ''));
+        } else {
+            range.end = range.start + 1;
+        }
+
+        return range;
+    }
+
+    /**
+     * Return the filename from the path.   Example
+     *   https://foo.com/bar.bed?param=2   => bar.bed
+     * @param urlOrFile
+     */
+
+    function getFilename$2(urlOrFile) {
+
+        if (urlOrFile.name !== undefined) {
+            return urlOrFile.name
+        } else if (isString$2(urlOrFile)) {
+
+            let index = urlOrFile.lastIndexOf("/");
+            let filename = index < 0 ? urlOrFile : urlOrFile.substr(index + 1);
+
+            //Strip parameters -- handle local files later
+            index = filename.indexOf("?");
+            if (index > 0) {
+                filename = filename.substr(0, index);
+            }
+            return filename
+        } else {
+            throw Error(`Expected File or string, got ${typeof urlOrFile}`)
+        }
+    }
+
+
+    /**
+     * Test if object is a File or File-like object.
+     *
+     * @param object
+     */
+    function isFile(object) {
+        if(!object) {
+            return false;
+        }
+        return typeof object !== 'function' &&
+            (object instanceof File ||
+                (object.hasOwnProperty("name") && typeof object.slice === 'function' && typeof object.arrayBuffer === 'function'))
+    }
+
+    function download(filename, data) {
+
+        const element = document.createElement('a');
+        element.setAttribute('href', data);
+        element.setAttribute('download', filename);
+        element.style.display = 'none';
+        document.body.appendChild(element);
+        element.click();
+        document.body.removeChild(element);
+    }
+
+    if (typeof process === 'object' && typeof window === 'undefined') {
+        global.atob = function (str) {
+            return Buffer.from(str, 'base64').toString('binary');
+        };
+    }
+
+
+    function parseUri(str) {
+
+        var o = options,
+            m = o.parser["loose"].exec(str),
+            uri = {},
+            i = 14;
+
+        while (i--) uri[o.key[i]] = m[i] || "";
+
+        uri[o.q.name] = {};
+        uri[o.key[12]].replace(o.q.parser, function ($0, $1, $2) {
+            if ($1) uri[o.q.name][$1] = $2;
+        });
+
+        return uri;
+    }
+
+    const options = {
+        strictMode: false,
+        key: ["source", "protocol", "authority", "userInfo", "user", "password", "host", "port", "relative", "path", "directory", "file", "query", "anchor"],
+        q: {
+            name: "queryKey",
+            parser: /(?:^|&)([^&=]*)=?([^&]*)/g
+        },
+        parser: {
+            strict: /^(?:([^:\/?#]+):)?(?:\/\/((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?))?((((?:[^?#\/]*\/)*)([^?#]*))(?:\?([^#]*))?(?:#(.*))?)/,
+            loose: /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/
+        }
+    };
+
+    /**
+     * Resolve a url, which might be a string, function (that returns a string or Promse), or Promise (that resolves to a string)
+     *
+     * @param url
+     * @returns {Promise<*>}
+     */
+    async function resolveURL(url) {
+        return (typeof url === 'function')  ?  url() :  url;
+    }
+
+    /*! pako 2.1.0 https://github.com/nodeca/pako @license (MIT AND Zlib) */
+    // (C) 1995-2013 Jean-loup Gailly and Mark Adler
+    // (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+    //
+    // This software is provided 'as-is', without any express or implied
+    // warranty. In no event will the authors be held liable for any damages
+    // arising from the use of this software.
+    //
+    // Permission is granted to anyone to use this software for any purpose,
+    // including commercial applications, and to alter it and redistribute it
+    // freely, subject to the following restrictions:
+    //
+    // 1. The origin of this software must not be misrepresented; you must not
+    //   claim that you wrote the original software. If you use this software
+    //   in a product, an acknowledgment in the product documentation would be
+    //   appreciated but is not required.
+    // 2. Altered source versions must be plainly marked as such, and must not be
+    //   misrepresented as being the original software.
+    // 3. This notice may not be removed or altered from any source distribution.
+
+    /* eslint-disable space-unary-ops */
+
+    /* Public constants ==========================================================*/
+    /* ===========================================================================*/
+
+
+    //const Z_FILTERED          = 1;
+    //const Z_HUFFMAN_ONLY      = 2;
+    //const Z_RLE               = 3;
+    const Z_FIXED$1               = 4;
+    //const Z_DEFAULT_STRATEGY  = 0;
+
+    /* Possible values of the data_type field (though see inflate()) */
+    const Z_BINARY              = 0;
+    const Z_TEXT                = 1;
+    //const Z_ASCII             = 1; // = Z_TEXT
+    const Z_UNKNOWN$1             = 2;
+
+    /*============================================================================*/
+
+
+    function zero$1$1(buf) { let len = buf.length; while (--len >= 0) { buf[len] = 0; } }
+
+    // From zutil.h
+
+    const STORED_BLOCK = 0;
+    const STATIC_TREES = 1;
+    const DYN_TREES    = 2;
+    /* The three kinds of block type */
+
+    const MIN_MATCH$1$1    = 3;
+    const MAX_MATCH$1$1    = 258;
+    /* The minimum and maximum match lengths */
+
+    // From deflate.h
+    /* ===========================================================================
+     * Internal compression state.
+     */
+
+    const LENGTH_CODES$1$1  = 29;
+    /* number of length codes, not counting the special END_BLOCK code */
+
+    const LITERALS$1$1      = 256;
+    /* number of literal bytes 0..255 */
+
+    const L_CODES$1$1       = LITERALS$1$1 + 1 + LENGTH_CODES$1$1;
+    /* number of Literal or Length codes, including the END_BLOCK code */
+
+    const D_CODES$1$1       = 30;
+    /* number of distance codes */
+
+    const BL_CODES$1      = 19;
+    /* number of codes used to transfer the bit lengths */
+
+    const HEAP_SIZE$1     = 2 * L_CODES$1$1 + 1;
+    /* maximum heap size */
+
+    const MAX_BITS$1      = 15;
+    /* All codes must not exceed MAX_BITS bits */
+
+    const Buf_size      = 16;
+    /* size of bit buffer in bi_buf */
+
+
+    /* ===========================================================================
+     * Constants
+     */
+
+    const MAX_BL_BITS = 7;
+    /* Bit length codes must not exceed MAX_BL_BITS bits */
+
+    const END_BLOCK   = 256;
+    /* end of block literal code */
+
+    const REP_3_6     = 16;
+    /* repeat previous bit length 3-6 times (2 bits of repeat count) */
+
+    const REPZ_3_10   = 17;
+    /* repeat a zero length 3-10 times  (3 bits of repeat count) */
+
+    const REPZ_11_138 = 18;
+    /* repeat a zero length 11-138 times  (7 bits of repeat count) */
+
+    /* eslint-disable comma-spacing,array-bracket-spacing */
+    const extra_lbits =   /* extra bits for each length code */
+      new Uint8Array([0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0]);
+
+    const extra_dbits =   /* extra bits for each distance code */
+      new Uint8Array([0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13]);
+
+    const extra_blbits =  /* extra bits for each bit length code */
+      new Uint8Array([0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7]);
+
+    const bl_order =
+      new Uint8Array([16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]);
+    /* eslint-enable comma-spacing,array-bracket-spacing */
+
+    /* The lengths of the bit length codes are sent in order of decreasing
+     * probability, to avoid transmitting the lengths for unused bit length codes.
+     */
+
+    /* ===========================================================================
+     * Local data. These are initialized only once.
+     */
+
+    // We pre-fill arrays with 0 to avoid uninitialized gaps
+
+    const DIST_CODE_LEN$1 = 512; /* see definition of array dist_code below */
+
+    // !!!! Use flat array instead of structure, Freq = i*2, Len = i*2+1
+    const static_ltree$1  = new Array((L_CODES$1$1 + 2) * 2);
+    zero$1$1(static_ltree$1);
+    /* The static literal tree. Since the bit lengths are imposed, there is no
+     * need for the L_CODES extra codes used during heap construction. However
+     * The codes 286 and 287 are needed to build a canonical tree (see _tr_init
+     * below).
+     */
+
+    const static_dtree$1  = new Array(D_CODES$1$1 * 2);
+    zero$1$1(static_dtree$1);
+    /* The static distance tree. (Actually a trivial tree since all codes use
+     * 5 bits.)
+     */
+
+    const _dist_code$1    = new Array(DIST_CODE_LEN$1);
+    zero$1$1(_dist_code$1);
+    /* Distance codes. The first 256 values correspond to the distances
+     * 3 .. 258, the last 256 values correspond to the top 8 bits of
+     * the 15 bit distances.
+     */
+
+    const _length_code$1  = new Array(MAX_MATCH$1$1 - MIN_MATCH$1$1 + 1);
+    zero$1$1(_length_code$1);
+    /* length code for each normalized match length (0 == MIN_MATCH) */
+
+    const base_length$1   = new Array(LENGTH_CODES$1$1);
+    zero$1$1(base_length$1);
+    /* First normalized length for each code (0 = MIN_MATCH) */
+
+    const base_dist$1     = new Array(D_CODES$1$1);
+    zero$1$1(base_dist$1);
+    /* First normalized distance for each code (0 = distance of 1) */
+
+
+    function StaticTreeDesc(static_tree, extra_bits, extra_base, elems, max_length) {
+
+      this.static_tree  = static_tree;  /* static tree or NULL */
+      this.extra_bits   = extra_bits;   /* extra bits for each code or NULL */
+      this.extra_base   = extra_base;   /* base index for extra_bits */
+      this.elems        = elems;        /* max number of elements in the tree */
+      this.max_length   = max_length;   /* max bit length for the codes */
+
+      // show if `static_tree` has data or dummy - needed for monomorphic objects
+      this.has_stree    = static_tree && static_tree.length;
+    }
+
+
+    let static_l_desc;
+    let static_d_desc;
+    let static_bl_desc;
+
+
+    function TreeDesc(dyn_tree, stat_desc) {
+      this.dyn_tree = dyn_tree;     /* the dynamic tree */
+      this.max_code = 0;            /* largest code with non zero frequency */
+      this.stat_desc = stat_desc;   /* the corresponding static tree */
+    }
+
+
+
+    const d_code = (dist) => {
+
+      return dist < 256 ? _dist_code$1[dist] : _dist_code$1[256 + (dist >>> 7)];
+    };
+
+
+    /* ===========================================================================
+     * Output a short LSB first on the stream.
+     * IN assertion: there is enough room in pendingBuf.
+     */
+    const put_short = (s, w) => {
+    //    put_byte(s, (uch)((w) & 0xff));
+    //    put_byte(s, (uch)((ush)(w) >> 8));
+      s.pending_buf[s.pending++] = (w) & 0xff;
+      s.pending_buf[s.pending++] = (w >>> 8) & 0xff;
+    };
+
+
+    /* ===========================================================================
+     * Send a value on a given number of bits.
+     * IN assertion: length <= 16 and value fits in length bits.
+     */
+    const send_bits = (s, value, length) => {
+
+      if (s.bi_valid > (Buf_size - length)) {
+        s.bi_buf |= (value << s.bi_valid) & 0xffff;
+        put_short(s, s.bi_buf);
+        s.bi_buf = value >> (Buf_size - s.bi_valid);
+        s.bi_valid += length - Buf_size;
+      } else {
+        s.bi_buf |= (value << s.bi_valid) & 0xffff;
+        s.bi_valid += length;
+      }
+    };
+
+
+    const send_code = (s, c, tree) => {
+
+      send_bits(s, tree[c * 2]/*.Code*/, tree[c * 2 + 1]/*.Len*/);
+    };
+
+
+    /* ===========================================================================
+     * Reverse the first len bits of a code, using straightforward code (a faster
+     * method would use a table)
+     * IN assertion: 1 <= len <= 15
+     */
+    const bi_reverse = (code, len) => {
+
+      let res = 0;
+      do {
+        res |= code & 1;
+        code >>>= 1;
+        res <<= 1;
+      } while (--len > 0);
+      return res >>> 1;
+    };
+
+
+    /* ===========================================================================
+     * Flush the bit buffer, keeping at most 7 bits in it.
+     */
+    const bi_flush = (s) => {
+
+      if (s.bi_valid === 16) {
+        put_short(s, s.bi_buf);
+        s.bi_buf = 0;
+        s.bi_valid = 0;
+
+      } else if (s.bi_valid >= 8) {
+        s.pending_buf[s.pending++] = s.bi_buf & 0xff;
+        s.bi_buf >>= 8;
+        s.bi_valid -= 8;
+      }
+    };
+
+
+    /* ===========================================================================
+     * Compute the optimal bit lengths for a tree and update the total bit length
+     * for the current block.
+     * IN assertion: the fields freq and dad are set, heap[heap_max] and
+     *    above are the tree nodes sorted by increasing frequency.
+     * OUT assertions: the field len is set to the optimal bit length, the
+     *     array bl_count contains the frequencies for each bit length.
+     *     The length opt_len is updated; static_len is also updated if stree is
+     *     not null.
+     */
+    const gen_bitlen = (s, desc) => {
+    //    deflate_state *s;
+    //    tree_desc *desc;    /* the tree descriptor */
+
+      const tree            = desc.dyn_tree;
+      const max_code        = desc.max_code;
+      const stree           = desc.stat_desc.static_tree;
+      const has_stree       = desc.stat_desc.has_stree;
+      const extra           = desc.stat_desc.extra_bits;
+      const base            = desc.stat_desc.extra_base;
+      const max_length      = desc.stat_desc.max_length;
+      let h;              /* heap index */
+      let n, m;           /* iterate over the tree elements */
+      let bits;           /* bit length */
+      let xbits;          /* extra bits */
+      let f;              /* frequency */
+      let overflow = 0;   /* number of elements with bit length too large */
+
+      for (bits = 0; bits <= MAX_BITS$1; bits++) {
+        s.bl_count[bits] = 0;
+      }
+
+      /* In a first pass, compute the optimal bit lengths (which may
+       * overflow in the case of the bit length tree).
+       */
+      tree[s.heap[s.heap_max] * 2 + 1]/*.Len*/ = 0; /* root of the heap */
+
+      for (h = s.heap_max + 1; h < HEAP_SIZE$1; h++) {
+        n = s.heap[h];
+        bits = tree[tree[n * 2 + 1]/*.Dad*/ * 2 + 1]/*.Len*/ + 1;
+        if (bits > max_length) {
+          bits = max_length;
+          overflow++;
+        }
+        tree[n * 2 + 1]/*.Len*/ = bits;
+        /* We overwrite tree[n].Dad which is no longer needed */
+
+        if (n > max_code) { continue; } /* not a leaf node */
+
+        s.bl_count[bits]++;
+        xbits = 0;
+        if (n >= base) {
+          xbits = extra[n - base];
+        }
+        f = tree[n * 2]/*.Freq*/;
+        s.opt_len += f * (bits + xbits);
+        if (has_stree) {
+          s.static_len += f * (stree[n * 2 + 1]/*.Len*/ + xbits);
+        }
+      }
+      if (overflow === 0) { return; }
+
+      // Tracev((stderr,"\nbit length overflow\n"));
+      /* This happens for example on obj2 and pic of the Calgary corpus */
+
+      /* Find the first bit length which could increase: */
+      do {
+        bits = max_length - 1;
+        while (s.bl_count[bits] === 0) { bits--; }
+        s.bl_count[bits]--;      /* move one leaf down the tree */
+        s.bl_count[bits + 1] += 2; /* move one overflow item as its brother */
+        s.bl_count[max_length]--;
+        /* The brother of the overflow item also moves one step up,
+         * but this does not affect bl_count[max_length]
+         */
+        overflow -= 2;
+      } while (overflow > 0);
+
+      /* Now recompute all bit lengths, scanning in increasing frequency.
+       * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all
+       * lengths instead of fixing only the wrong ones. This idea is taken
+       * from 'ar' written by Haruhiko Okumura.)
+       */
+      for (bits = max_length; bits !== 0; bits--) {
+        n = s.bl_count[bits];
+        while (n !== 0) {
+          m = s.heap[--h];
+          if (m > max_code) { continue; }
+          if (tree[m * 2 + 1]/*.Len*/ !== bits) {
+            // Tracev((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));
+            s.opt_len += (bits - tree[m * 2 + 1]/*.Len*/) * tree[m * 2]/*.Freq*/;
+            tree[m * 2 + 1]/*.Len*/ = bits;
+          }
+          n--;
+        }
+      }
+    };
+
+
+    /* ===========================================================================
+     * Generate the codes for a given tree and bit counts (which need not be
+     * optimal).
+     * IN assertion: the array bl_count contains the bit length statistics for
+     * the given tree and the field len is set for all tree elements.
+     * OUT assertion: the field code is set for all tree elements of non
+     *     zero code length.
+     */
+    const gen_codes = (tree, max_code, bl_count) => {
+    //    ct_data *tree;             /* the tree to decorate */
+    //    int max_code;              /* largest code with non zero frequency */
+    //    ushf *bl_count;            /* number of codes at each bit length */
+
+      const next_code = new Array(MAX_BITS$1 + 1); /* next code value for each bit length */
+      let code = 0;              /* running code value */
+      let bits;                  /* bit index */
+      let n;                     /* code index */
+
+      /* The distribution counts are first used to generate the code values
+       * without bit reversal.
+       */
+      for (bits = 1; bits <= MAX_BITS$1; bits++) {
+        code = (code + bl_count[bits - 1]) << 1;
+        next_code[bits] = code;
+      }
+      /* Check that the bit counts in bl_count are consistent. The last code
+       * must be all ones.
+       */
+      //Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
+      //        "inconsistent bit counts");
+      //Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
+
+      for (n = 0;  n <= max_code; n++) {
+        let len = tree[n * 2 + 1]/*.Len*/;
+        if (len === 0) { continue; }
+        /* Now reverse the bits */
+        tree[n * 2]/*.Code*/ = bi_reverse(next_code[len]++, len);
+
+        //Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
+        //     n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
+      }
+    };
+
+
+    /* ===========================================================================
+     * Initialize the various 'constant' tables.
+     */
+    const tr_static_init = () => {
+
+      let n;        /* iterates over tree elements */
+      let bits;     /* bit counter */
+      let length;   /* length value */
+      let code;     /* code value */
+      let dist;     /* distance index */
+      const bl_count = new Array(MAX_BITS$1 + 1);
+      /* number of codes at each bit length for an optimal tree */
+
+      // do check in _tr_init()
+      //if (static_init_done) return;
+
+      /* For some embedded targets, global variables are not initialized: */
+    /*#ifdef NO_INIT_GLOBAL_POINTERS
+      static_l_desc.static_tree = static_ltree;
+      static_l_desc.extra_bits = extra_lbits;
+      static_d_desc.static_tree = static_dtree;
+      static_d_desc.extra_bits = extra_dbits;
+      static_bl_desc.extra_bits = extra_blbits;
+    #endif*/
+
+      /* Initialize the mapping length (0..255) -> length code (0..28) */
+      length = 0;
+      for (code = 0; code < LENGTH_CODES$1$1 - 1; code++) {
+        base_length$1[code] = length;
+        for (n = 0; n < (1 << extra_lbits[code]); n++) {
+          _length_code$1[length++] = code;
+        }
+      }
+      //Assert (length == 256, "tr_static_init: length != 256");
+      /* Note that the length 255 (match length 258) can be represented
+       * in two different ways: code 284 + 5 bits or code 285, so we
+       * overwrite length_code[255] to use the best encoding:
+       */
+      _length_code$1[length - 1] = code;
+
+      /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
+      dist = 0;
+      for (code = 0; code < 16; code++) {
+        base_dist$1[code] = dist;
+        for (n = 0; n < (1 << extra_dbits[code]); n++) {
+          _dist_code$1[dist++] = code;
+        }
+      }
+      //Assert (dist == 256, "tr_static_init: dist != 256");
+      dist >>= 7; /* from now on, all distances are divided by 128 */
+      for (; code < D_CODES$1$1; code++) {
+        base_dist$1[code] = dist << 7;
+        for (n = 0; n < (1 << (extra_dbits[code] - 7)); n++) {
+          _dist_code$1[256 + dist++] = code;
+        }
+      }
+      //Assert (dist == 256, "tr_static_init: 256+dist != 512");
+
+      /* Construct the codes of the static literal tree */
+      for (bits = 0; bits <= MAX_BITS$1; bits++) {
+        bl_count[bits] = 0;
+      }
+
+      n = 0;
+      while (n <= 143) {
+        static_ltree$1[n * 2 + 1]/*.Len*/ = 8;
+        n++;
+        bl_count[8]++;
+      }
+      while (n <= 255) {
+        static_ltree$1[n * 2 + 1]/*.Len*/ = 9;
+        n++;
+        bl_count[9]++;
+      }
+      while (n <= 279) {
+        static_ltree$1[n * 2 + 1]/*.Len*/ = 7;
+        n++;
+        bl_count[7]++;
+      }
+      while (n <= 287) {
+        static_ltree$1[n * 2 + 1]/*.Len*/ = 8;
+        n++;
+        bl_count[8]++;
+      }
+      /* Codes 286 and 287 do not exist, but we must include them in the
+       * tree construction to get a canonical Huffman tree (longest code
+       * all ones)
+       */
+      gen_codes(static_ltree$1, L_CODES$1$1 + 1, bl_count);
+
+      /* The static distance tree is trivial: */
+      for (n = 0; n < D_CODES$1$1; n++) {
+        static_dtree$1[n * 2 + 1]/*.Len*/ = 5;
+        static_dtree$1[n * 2]/*.Code*/ = bi_reverse(n, 5);
+      }
+
+      // Now data ready and we can init static trees
+      static_l_desc = new StaticTreeDesc(static_ltree$1, extra_lbits, LITERALS$1$1 + 1, L_CODES$1$1, MAX_BITS$1);
+      static_d_desc = new StaticTreeDesc(static_dtree$1, extra_dbits, 0,          D_CODES$1$1, MAX_BITS$1);
+      static_bl_desc = new StaticTreeDesc(new Array(0), extra_blbits, 0,         BL_CODES$1, MAX_BL_BITS);
+
+      //static_init_done = true;
+    };
+
+
+    /* ===========================================================================
+     * Initialize a new block.
+     */
+    const init_block = (s) => {
+
+      let n; /* iterates over tree elements */
+
+      /* Initialize the trees. */
+      for (n = 0; n < L_CODES$1$1;  n++) { s.dyn_ltree[n * 2]/*.Freq*/ = 0; }
+      for (n = 0; n < D_CODES$1$1;  n++) { s.dyn_dtree[n * 2]/*.Freq*/ = 0; }
+      for (n = 0; n < BL_CODES$1; n++) { s.bl_tree[n * 2]/*.Freq*/ = 0; }
+
+      s.dyn_ltree[END_BLOCK * 2]/*.Freq*/ = 1;
+      s.opt_len = s.static_len = 0;
+      s.sym_next = s.matches = 0;
+    };
+
+
+    /* ===========================================================================
+     * Flush the bit buffer and align the output on a byte boundary
+     */
+    const bi_windup = (s) =>
+    {
+      if (s.bi_valid > 8) {
+        put_short(s, s.bi_buf);
+      } else if (s.bi_valid > 0) {
+        //put_byte(s, (Byte)s->bi_buf);
+        s.pending_buf[s.pending++] = s.bi_buf;
+      }
+      s.bi_buf = 0;
+      s.bi_valid = 0;
+    };
+
+    /* ===========================================================================
+     * Compares to subtrees, using the tree depth as tie breaker when
+     * the subtrees have equal frequency. This minimizes the worst case length.
+     */
+    const smaller = (tree, n, m, depth) => {
+
+      const _n2 = n * 2;
+      const _m2 = m * 2;
+      return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ ||
+             (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m]));
+    };
+
+    /* ===========================================================================
+     * Restore the heap property by moving down the tree starting at node k,
+     * exchanging a node with the smallest of its two sons if necessary, stopping
+     * when the heap property is re-established (each father smaller than its
+     * two sons).
+     */
+    const pqdownheap = (s, tree, k) => {
+    //    deflate_state *s;
+    //    ct_data *tree;  /* the tree to restore */
+    //    int k;               /* node to move down */
+
+      const v = s.heap[k];
+      let j = k << 1;  /* left son of k */
+      while (j <= s.heap_len) {
+        /* Set j to the smallest of the two sons: */
+        if (j < s.heap_len &&
+          smaller(tree, s.heap[j + 1], s.heap[j], s.depth)) {
+          j++;
+        }
+        /* Exit if v is smaller than both sons */
+        if (smaller(tree, v, s.heap[j], s.depth)) { break; }
+
+        /* Exchange v with the smallest son */
+        s.heap[k] = s.heap[j];
+        k = j;
+
+        /* And continue down the tree, setting j to the left son of k */
+        j <<= 1;
+      }
+      s.heap[k] = v;
+    };
+
+
+    // inlined manually
+    // const SMALLEST = 1;
+
+    /* ===========================================================================
+     * Send the block data compressed using the given Huffman trees
+     */
+    const compress_block = (s, ltree, dtree) => {
+    //    deflate_state *s;
+    //    const ct_data *ltree; /* literal tree */
+    //    const ct_data *dtree; /* distance tree */
+
+      let dist;           /* distance of matched string */
+      let lc;             /* match length or unmatched char (if dist == 0) */
+      let sx = 0;         /* running index in sym_buf */
+      let code;           /* the code to send */
+      let extra;          /* number of extra bits to send */
+
+      if (s.sym_next !== 0) {
+        do {
+          dist = s.pending_buf[s.sym_buf + sx++] & 0xff;
+          dist += (s.pending_buf[s.sym_buf + sx++] & 0xff) << 8;
+          lc = s.pending_buf[s.sym_buf + sx++];
+          if (dist === 0) {
+            send_code(s, lc, ltree); /* send a literal byte */
+            //Tracecv(isgraph(lc), (stderr," '%c' ", lc));
+          } else {
+            /* Here, lc is the match length - MIN_MATCH */
+            code = _length_code$1[lc];
+            send_code(s, code + LITERALS$1$1 + 1, ltree); /* send the length code */
+            extra = extra_lbits[code];
+            if (extra !== 0) {
+              lc -= base_length$1[code];
+              send_bits(s, lc, extra);       /* send the extra length bits */
+            }
+            dist--; /* dist is now the match distance - 1 */
+            code = d_code(dist);
+            //Assert (code < D_CODES, "bad d_code");
+
+            send_code(s, code, dtree);       /* send the distance code */
+            extra = extra_dbits[code];
+            if (extra !== 0) {
+              dist -= base_dist$1[code];
+              send_bits(s, dist, extra);   /* send the extra distance bits */
+            }
+          } /* literal or match pair ? */
+
+          /* Check that the overlay between pending_buf and sym_buf is ok: */
+          //Assert(s->pending < s->lit_bufsize + sx, "pendingBuf overflow");
+
+        } while (sx < s.sym_next);
+      }
+
+      send_code(s, END_BLOCK, ltree);
+    };
+
+
+    /* ===========================================================================
+     * Construct one Huffman tree and assigns the code bit strings and lengths.
+     * Update the total bit length for the current block.
+     * IN assertion: the field freq is set for all tree elements.
+     * OUT assertions: the fields len and code are set to the optimal bit length
+     *     and corresponding code. The length opt_len is updated; static_len is
+     *     also updated if stree is not null. The field max_code is set.
+     */
+    const build_tree = (s, desc) => {
+    //    deflate_state *s;
+    //    tree_desc *desc; /* the tree descriptor */
+
+      const tree     = desc.dyn_tree;
+      const stree    = desc.stat_desc.static_tree;
+      const has_stree = desc.stat_desc.has_stree;
+      const elems    = desc.stat_desc.elems;
+      let n, m;          /* iterate over heap elements */
+      let max_code = -1; /* largest code with non zero frequency */
+      let node;          /* new node being created */
+
+      /* Construct the initial heap, with least frequent element in
+       * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
+       * heap[0] is not used.
+       */
+      s.heap_len = 0;
+      s.heap_max = HEAP_SIZE$1;
+
+      for (n = 0; n < elems; n++) {
+        if (tree[n * 2]/*.Freq*/ !== 0) {
+          s.heap[++s.heap_len] = max_code = n;
+          s.depth[n] = 0;
+
+        } else {
+          tree[n * 2 + 1]/*.Len*/ = 0;
+        }
+      }
+
+      /* The pkzip format requires that at least one distance code exists,
+       * and that at least one bit should be sent even if there is only one
+       * possible code. So to avoid special checks later on we force at least
+       * two codes of non zero frequency.
+       */
+      while (s.heap_len < 2) {
+        node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0);
+        tree[node * 2]/*.Freq*/ = 1;
+        s.depth[node] = 0;
+        s.opt_len--;
+
+        if (has_stree) {
+          s.static_len -= stree[node * 2 + 1]/*.Len*/;
+        }
+        /* node is 0 or 1 so it does not have extra bits */
+      }
+      desc.max_code = max_code;
+
+      /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
+       * establish sub-heaps of increasing lengths:
+       */
+      for (n = (s.heap_len >> 1/*int /2*/); n >= 1; n--) { pqdownheap(s, tree, n); }
+
+      /* Construct the Huffman tree by repeatedly combining the least two
+       * frequent nodes.
+       */
+      node = elems;              /* next internal node of the tree */
+      do {
+        //pqremove(s, tree, n);  /* n = node of least frequency */
+        /*** pqremove ***/
+        n = s.heap[1/*SMALLEST*/];
+        s.heap[1/*SMALLEST*/] = s.heap[s.heap_len--];
+        pqdownheap(s, tree, 1/*SMALLEST*/);
+        /***/
+
+        m = s.heap[1/*SMALLEST*/]; /* m = node of next least frequency */
+
+        s.heap[--s.heap_max] = n; /* keep the nodes sorted by frequency */
+        s.heap[--s.heap_max] = m;
+
+        /* Create a new node father of n and m */
+        tree[node * 2]/*.Freq*/ = tree[n * 2]/*.Freq*/ + tree[m * 2]/*.Freq*/;
+        s.depth[node] = (s.depth[n] >= s.depth[m] ? s.depth[n] : s.depth[m]) + 1;
+        tree[n * 2 + 1]/*.Dad*/ = tree[m * 2 + 1]/*.Dad*/ = node;
+
+        /* and insert the new node in the heap */
+        s.heap[1/*SMALLEST*/] = node++;
+        pqdownheap(s, tree, 1/*SMALLEST*/);
+
+      } while (s.heap_len >= 2);
+
+      s.heap[--s.heap_max] = s.heap[1/*SMALLEST*/];
+
+      /* At this point, the fields freq and dad are set. We can now
+       * generate the bit lengths.
+       */
+      gen_bitlen(s, desc);
+
+      /* The field len is now set, we can generate the bit codes */
+      gen_codes(tree, max_code, s.bl_count);
+    };
+
+
+    /* ===========================================================================
+     * Scan a literal or distance tree to determine the frequencies of the codes
+     * in the bit length tree.
+     */
+    const scan_tree = (s, tree, max_code) => {
+    //    deflate_state *s;
+    //    ct_data *tree;   /* the tree to be scanned */
+    //    int max_code;    /* and its largest code of non zero frequency */
+
+      let n;                     /* iterates over all tree elements */
+      let prevlen = -1;          /* last emitted length */
+      let curlen;                /* length of current code */
+
+      let nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */
+
+      let count = 0;             /* repeat count of the current code */
+      let max_count = 7;         /* max repeat count */
+      let min_count = 4;         /* min repeat count */
+
+      if (nextlen === 0) {
+        max_count = 138;
+        min_count = 3;
+      }
+      tree[(max_code + 1) * 2 + 1]/*.Len*/ = 0xffff; /* guard */
+
+      for (n = 0; n <= max_code; n++) {
+        curlen = nextlen;
+        nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;
+
+        if (++count < max_count && curlen === nextlen) {
+          continue;
+
+        } else if (count < min_count) {
+          s.bl_tree[curlen * 2]/*.Freq*/ += count;
+
+        } else if (curlen !== 0) {
+
+          if (curlen !== prevlen) { s.bl_tree[curlen * 2]/*.Freq*/++; }
+          s.bl_tree[REP_3_6 * 2]/*.Freq*/++;
+
+        } else if (count <= 10) {
+          s.bl_tree[REPZ_3_10 * 2]/*.Freq*/++;
+
+        } else {
+          s.bl_tree[REPZ_11_138 * 2]/*.Freq*/++;
+        }
+
+        count = 0;
+        prevlen = curlen;
+
+        if (nextlen === 0) {
+          max_count = 138;
+          min_count = 3;
+
+        } else if (curlen === nextlen) {
+          max_count = 6;
+          min_count = 3;
+
+        } else {
+          max_count = 7;
+          min_count = 4;
+        }
+      }
+    };
+
+
+    /* ===========================================================================
+     * Send a literal or distance tree in compressed form, using the codes in
+     * bl_tree.
+     */
+    const send_tree = (s, tree, max_code) => {
+    //    deflate_state *s;
+    //    ct_data *tree; /* the tree to be scanned */
+    //    int max_code;       /* and its largest code of non zero frequency */
+
+      let n;                     /* iterates over all tree elements */
+      let prevlen = -1;          /* last emitted length */
+      let curlen;                /* length of current code */
+
+      let nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */
+
+      let count = 0;             /* repeat count of the current code */
+      let max_count = 7;         /* max repeat count */
+      let min_count = 4;         /* min repeat count */
+
+      /* tree[max_code+1].Len = -1; */  /* guard already set */
+      if (nextlen === 0) {
+        max_count = 138;
+        min_count = 3;
+      }
+
+      for (n = 0; n <= max_code; n++) {
+        curlen = nextlen;
+        nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;
+
+        if (++count < max_count && curlen === nextlen) {
+          continue;
+
+        } else if (count < min_count) {
+          do { send_code(s, curlen, s.bl_tree); } while (--count !== 0);
+
+        } else if (curlen !== 0) {
+          if (curlen !== prevlen) {
+            send_code(s, curlen, s.bl_tree);
+            count--;
+          }
+          //Assert(count >= 3 && count <= 6, " 3_6?");
+          send_code(s, REP_3_6, s.bl_tree);
+          send_bits(s, count - 3, 2);
+
+        } else if (count <= 10) {
+          send_code(s, REPZ_3_10, s.bl_tree);
+          send_bits(s, count - 3, 3);
+
+        } else {
+          send_code(s, REPZ_11_138, s.bl_tree);
+          send_bits(s, count - 11, 7);
+        }
+
+        count = 0;
+        prevlen = curlen;
+        if (nextlen === 0) {
+          max_count = 138;
+          min_count = 3;
+
+        } else if (curlen === nextlen) {
+          max_count = 6;
+          min_count = 3;
+
+        } else {
+          max_count = 7;
+          min_count = 4;
+        }
+      }
+    };
+
+
+    /* ===========================================================================
+     * Construct the Huffman tree for the bit lengths and return the index in
+     * bl_order of the last bit length code to send.
+     */
+    const build_bl_tree = (s) => {
+
+      let max_blindex;  /* index of last bit length code of non zero freq */
+
+      /* Determine the bit length frequencies for literal and distance trees */
+      scan_tree(s, s.dyn_ltree, s.l_desc.max_code);
+      scan_tree(s, s.dyn_dtree, s.d_desc.max_code);
+
+      /* Build the bit length tree: */
+      build_tree(s, s.bl_desc);
+      /* opt_len now includes the length of the tree representations, except
+       * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
+       */
+
+      /* Determine the number of bit length codes to send. The pkzip format
+       * requires that at least 4 bit length codes be sent. (appnote.txt says
+       * 3 but the actual value used is 4.)
+       */
+      for (max_blindex = BL_CODES$1 - 1; max_blindex >= 3; max_blindex--) {
+        if (s.bl_tree[bl_order[max_blindex] * 2 + 1]/*.Len*/ !== 0) {
+          break;
+        }
+      }
+      /* Update opt_len to include the bit length tree and counts */
+      s.opt_len += 3 * (max_blindex + 1) + 5 + 5 + 4;
+      //Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
+      //        s->opt_len, s->static_len));
+
+      return max_blindex;
+    };
+
+
+    /* ===========================================================================
+     * Send the header for a block using dynamic Huffman trees: the counts, the
+     * lengths of the bit length codes, the literal tree and the distance tree.
+     * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
+     */
+    const send_all_trees = (s, lcodes, dcodes, blcodes) => {
+    //    deflate_state *s;
+    //    int lcodes, dcodes, blcodes; /* number of codes for each tree */
+
+      let rank;                    /* index in bl_order */
+
+      //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
+      //Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
+      //        "too many codes");
+      //Tracev((stderr, "\nbl counts: "));
+      send_bits(s, lcodes - 257, 5); /* not +255 as stated in appnote.txt */
+      send_bits(s, dcodes - 1,   5);
+      send_bits(s, blcodes - 4,  4); /* not -3 as stated in appnote.txt */
+      for (rank = 0; rank < blcodes; rank++) {
+        //Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
+        send_bits(s, s.bl_tree[bl_order[rank] * 2 + 1]/*.Len*/, 3);
+      }
+      //Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));
+
+      send_tree(s, s.dyn_ltree, lcodes - 1); /* literal tree */
+      //Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));
+
+      send_tree(s, s.dyn_dtree, dcodes - 1); /* distance tree */
+      //Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
+    };
+
+
+    /* ===========================================================================
+     * Check if the data type is TEXT or BINARY, using the following algorithm:
+     * - TEXT if the two conditions below are satisfied:
+     *    a) There are no non-portable control characters belonging to the
+     *       "block list" (0..6, 14..25, 28..31).
+     *    b) There is at least one printable character belonging to the
+     *       "allow list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).
+     * - BINARY otherwise.
+     * - The following partially-portable control characters form a
+     *   "gray list" that is ignored in this detection algorithm:
+     *   (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).
+     * IN assertion: the fields Freq of dyn_ltree are set.
+     */
+    const detect_data_type = (s) => {
+      /* block_mask is the bit mask of block-listed bytes
+       * set bits 0..6, 14..25, and 28..31
+       * 0xf3ffc07f = binary 11110011111111111100000001111111
+       */
+      let block_mask = 0xf3ffc07f;
+      let n;
+
+      /* Check for non-textual ("block-listed") bytes. */
+      for (n = 0; n <= 31; n++, block_mask >>>= 1) {
+        if ((block_mask & 1) && (s.dyn_ltree[n * 2]/*.Freq*/ !== 0)) {
+          return Z_BINARY;
+        }
+      }
+
+      /* Check for textual ("allow-listed") bytes. */
+      if (s.dyn_ltree[9 * 2]/*.Freq*/ !== 0 || s.dyn_ltree[10 * 2]/*.Freq*/ !== 0 ||
+          s.dyn_ltree[13 * 2]/*.Freq*/ !== 0) {
+        return Z_TEXT;
+      }
+      for (n = 32; n < LITERALS$1$1; n++) {
+        if (s.dyn_ltree[n * 2]/*.Freq*/ !== 0) {
+          return Z_TEXT;
+        }
+      }
+
+      /* There are no "block-listed" or "allow-listed" bytes:
+       * this stream either is empty or has tolerated ("gray-listed") bytes only.
+       */
+      return Z_BINARY;
+    };
+
+
+    let static_init_done = false;
+
+    /* ===========================================================================
+     * Initialize the tree data structures for a new zlib stream.
+     */
+    const _tr_init$1 = (s) =>
+    {
+
+      if (!static_init_done) {
+        tr_static_init();
+        static_init_done = true;
+      }
+
+      s.l_desc  = new TreeDesc(s.dyn_ltree, static_l_desc);
+      s.d_desc  = new TreeDesc(s.dyn_dtree, static_d_desc);
+      s.bl_desc = new TreeDesc(s.bl_tree, static_bl_desc);
+
+      s.bi_buf = 0;
+      s.bi_valid = 0;
+
+      /* Initialize the first block of the first file: */
+      init_block(s);
+    };
+
+
+    /* ===========================================================================
+     * Send a stored block
+     */
+    const _tr_stored_block$1 = (s, buf, stored_len, last) => {
+    //DeflateState *s;
+    //charf *buf;       /* input block */
+    //ulg stored_len;   /* length of input block */
+    //int last;         /* one if this is the last block for a file */
+
+      send_bits(s, (STORED_BLOCK << 1) + (last ? 1 : 0), 3);    /* send block type */
+      bi_windup(s);        /* align on byte boundary */
+      put_short(s, stored_len);
+      put_short(s, ~stored_len);
+      if (stored_len) {
+        s.pending_buf.set(s.window.subarray(buf, buf + stored_len), s.pending);
+      }
+      s.pending += stored_len;
+    };
+
+
+    /* ===========================================================================
+     * Send one empty static block to give enough lookahead for inflate.
+     * This takes 10 bits, of which 7 may remain in the bit buffer.
+     */
+    const _tr_align$1 = (s) => {
+      send_bits(s, STATIC_TREES << 1, 3);
+      send_code(s, END_BLOCK, static_ltree$1);
+      bi_flush(s);
+    };
+
+
+    /* ===========================================================================
+     * Determine the best encoding for the current block: dynamic trees, static
+     * trees or store, and write out the encoded block.
+     */
+    const _tr_flush_block$1 = (s, buf, stored_len, last) => {
+    //DeflateState *s;
+    //charf *buf;       /* input block, or NULL if too old */
+    //ulg stored_len;   /* length of input block */
+    //int last;         /* one if this is the last block for a file */
+
+      let opt_lenb, static_lenb;  /* opt_len and static_len in bytes */
+      let max_blindex = 0;        /* index of last bit length code of non zero freq */
+
+      /* Build the Huffman trees unless a stored block is forced */
+      if (s.level > 0) {
+
+        /* Check if the file is binary or text */
+        if (s.strm.data_type === Z_UNKNOWN$1) {
+          s.strm.data_type = detect_data_type(s);
+        }
+
+        /* Construct the literal and distance trees */
+        build_tree(s, s.l_desc);
+        // Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
+        //        s->static_len));
+
+        build_tree(s, s.d_desc);
+        // Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
+        //        s->static_len));
+        /* At this point, opt_len and static_len are the total bit lengths of
+         * the compressed block data, excluding the tree representations.
+         */
+
+        /* Build the bit length tree for the above two trees, and get the index
+         * in bl_order of the last bit length code to send.
+         */
+        max_blindex = build_bl_tree(s);
+
+        /* Determine the best encoding. Compute the block lengths in bytes. */
+        opt_lenb = (s.opt_len + 3 + 7) >>> 3;
+        static_lenb = (s.static_len + 3 + 7) >>> 3;
+
+        // Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
+        //        opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
+        //        s->sym_next / 3));
+
+        if (static_lenb <= opt_lenb) { opt_lenb = static_lenb; }
+
+      } else {
+        // Assert(buf != (char*)0, "lost buf");
+        opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
+      }
+
+      if ((stored_len + 4 <= opt_lenb) && (buf !== -1)) {
+        /* 4: two words for the lengths */
+
+        /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
+         * Otherwise we can't have processed more than WSIZE input bytes since
+         * the last block flush, because compression would have been
+         * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
+         * transform a block into a stored block.
+         */
+        _tr_stored_block$1(s, buf, stored_len, last);
+
+      } else if (s.strategy === Z_FIXED$1 || static_lenb === opt_lenb) {
+
+        send_bits(s, (STATIC_TREES << 1) + (last ? 1 : 0), 3);
+        compress_block(s, static_ltree$1, static_dtree$1);
+
+      } else {
+        send_bits(s, (DYN_TREES << 1) + (last ? 1 : 0), 3);
+        send_all_trees(s, s.l_desc.max_code + 1, s.d_desc.max_code + 1, max_blindex + 1);
+        compress_block(s, s.dyn_ltree, s.dyn_dtree);
+      }
+      // Assert (s->compressed_len == s->bits_sent, "bad compressed size");
+      /* The above check is made mod 2^32, for files larger than 512 MB
+       * and uLong implemented on 32 bits.
+       */
+      init_block(s);
+
+      if (last) {
+        bi_windup(s);
+      }
+      // Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,
+      //       s->compressed_len-7*last));
+    };
+
+    /* ===========================================================================
+     * Save the match info and tally the frequency counts. Return true if
+     * the current block must be flushed.
+     */
+    const _tr_tally$1 = (s, dist, lc) => {
+    //    deflate_state *s;
+    //    unsigned dist;  /* distance of matched string */
+    //    unsigned lc;    /* match length-MIN_MATCH or unmatched char (if dist==0) */
+
+      s.pending_buf[s.sym_buf + s.sym_next++] = dist;
+      s.pending_buf[s.sym_buf + s.sym_next++] = dist >> 8;
+      s.pending_buf[s.sym_buf + s.sym_next++] = lc;
+      if (dist === 0) {
+        /* lc is the unmatched char */
+        s.dyn_ltree[lc * 2]/*.Freq*/++;
+      } else {
+        s.matches++;
+        /* Here, lc is the match length - MIN_MATCH */
+        dist--;             /* dist = match distance - 1 */
+        //Assert((ush)dist < (ush)MAX_DIST(s) &&
+        //       (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
+        //       (ush)d_code(dist) < (ush)D_CODES,  "_tr_tally: bad match");
+
+        s.dyn_ltree[(_length_code$1[lc] + LITERALS$1$1 + 1) * 2]/*.Freq*/++;
+        s.dyn_dtree[d_code(dist) * 2]/*.Freq*/++;
+      }
+
+      return (s.sym_next === s.sym_end);
+    };
+
+    var _tr_init_1  = _tr_init$1;
+    var _tr_stored_block_1 = _tr_stored_block$1;
+    var _tr_flush_block_1  = _tr_flush_block$1;
+    var _tr_tally_1 = _tr_tally$1;
+    var _tr_align_1 = _tr_align$1;
+
+    var trees = {
+    	_tr_init: _tr_init_1,
+    	_tr_stored_block: _tr_stored_block_1,
+    	_tr_flush_block: _tr_flush_block_1,
+    	_tr_tally: _tr_tally_1,
+    	_tr_align: _tr_align_1
+    };
+
+    // Note: adler32 takes 12% for level 0 and 2% for level 6.
+    // It isn't worth it to make additional optimizations as in original.
+    // Small size is preferable.
+
+    // (C) 1995-2013 Jean-loup Gailly and Mark Adler
+    // (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+    //
+    // This software is provided 'as-is', without any express or implied
+    // warranty. In no event will the authors be held liable for any damages
+    // arising from the use of this software.
+    //
+    // Permission is granted to anyone to use this software for any purpose,
+    // including commercial applications, and to alter it and redistribute it
+    // freely, subject to the following restrictions:
+    //
+    // 1. The origin of this software must not be misrepresented; you must not
+    //   claim that you wrote the original software. If you use this software
+    //   in a product, an acknowledgment in the product documentation would be
+    //   appreciated but is not required.
+    // 2. Altered source versions must be plainly marked as such, and must not be
+    //   misrepresented as being the original software.
+    // 3. This notice may not be removed or altered from any source distribution.
+
+    const adler32$1 = (adler, buf, len, pos) => {
+      let s1 = (adler & 0xffff) |0,
+          s2 = ((adler >>> 16) & 0xffff) |0,
+          n = 0;
+
+      while (len !== 0) {
+        // Set limit ~ twice less than 5552, to keep
+        // s2 in 31-bits, because we force signed ints.
+        // in other case %= will fail.
+        n = len > 2000 ? 2000 : len;
+        len -= n;
+
+        do {
+          s1 = (s1 + buf[pos++]) |0;
+          s2 = (s2 + s1) |0;
+        } while (--n);
+
+        s1 %= 65521;
+        s2 %= 65521;
+      }
+
+      return (s1 | (s2 << 16)) |0;
+    };
+
+
+    var adler32_1$1 = adler32$1;
+
+    // Note: we can't get significant speed boost here.
+    // So write code to minimize size - no pregenerated tables
+    // and array tools dependencies.
+
+    // (C) 1995-2013 Jean-loup Gailly and Mark Adler
+    // (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+    //
+    // This software is provided 'as-is', without any express or implied
+    // warranty. In no event will the authors be held liable for any damages
+    // arising from the use of this software.
+    //
+    // Permission is granted to anyone to use this software for any purpose,
+    // including commercial applications, and to alter it and redistribute it
+    // freely, subject to the following restrictions:
+    //
+    // 1. The origin of this software must not be misrepresented; you must not
+    //   claim that you wrote the original software. If you use this software
+    //   in a product, an acknowledgment in the product documentation would be
+    //   appreciated but is not required.
+    // 2. Altered source versions must be plainly marked as such, and must not be
+    //   misrepresented as being the original software.
+    // 3. This notice may not be removed or altered from any source distribution.
+
+    // Use ordinary array, since untyped makes no boost here
+    const makeTable$1 = () => {
+      let c, table = [];
+
+      for (var n = 0; n < 256; n++) {
+        c = n;
+        for (var k = 0; k < 8; k++) {
+          c = ((c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));
+        }
+        table[n] = c;
+      }
+
+      return table;
+    };
+
+    // Create table on load. Just 255 signed longs. Not a problem.
+    const crcTable$1 = new Uint32Array(makeTable$1());
+
+
+    const crc32$1 = (crc, buf, len, pos) => {
+      const t = crcTable$1;
+      const end = pos + len;
+
+      crc ^= -1;
+
+      for (let i = pos; i < end; i++) {
+        crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];
+      }
+
+      return (crc ^ (-1)); // >>> 0;
+    };
+
+
+    var crc32_1$1 = crc32$1;
+
+    // (C) 1995-2013 Jean-loup Gailly and Mark Adler
+    // (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+    //
+    // This software is provided 'as-is', without any express or implied
+    // warranty. In no event will the authors be held liable for any damages
+    // arising from the use of this software.
+    //
+    // Permission is granted to anyone to use this software for any purpose,
+    // including commercial applications, and to alter it and redistribute it
+    // freely, subject to the following restrictions:
+    //
+    // 1. The origin of this software must not be misrepresented; you must not
+    //   claim that you wrote the original software. If you use this software
+    //   in a product, an acknowledgment in the product documentation would be
+    //   appreciated but is not required.
+    // 2. Altered source versions must be plainly marked as such, and must not be
+    //   misrepresented as being the original software.
+    // 3. This notice may not be removed or altered from any source distribution.
+
+    var messages$1 = {
+      2:      'need dictionary',     /* Z_NEED_DICT       2  */
+      1:      'stream end',          /* Z_STREAM_END      1  */
+      0:      '',                    /* Z_OK              0  */
+      '-1':   'file error',          /* Z_ERRNO         (-1) */
+      '-2':   'stream error',        /* Z_STREAM_ERROR  (-2) */
+      '-3':   'data error',          /* Z_DATA_ERROR    (-3) */
+      '-4':   'insufficient memory', /* Z_MEM_ERROR     (-4) */
+      '-5':   'buffer error',        /* Z_BUF_ERROR     (-5) */
+      '-6':   'incompatible version' /* Z_VERSION_ERROR (-6) */
+    };
+
+    // (C) 1995-2013 Jean-loup Gailly and Mark Adler
+    // (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+    //
+    // This software is provided 'as-is', without any express or implied
+    // warranty. In no event will the authors be held liable for any damages
+    // arising from the use of this software.
+    //
+    // Permission is granted to anyone to use this software for any purpose,
+    // including commercial applications, and to alter it and redistribute it
+    // freely, subject to the following restrictions:
+    //
+    // 1. The origin of this software must not be misrepresented; you must not
+    //   claim that you wrote the original software. If you use this software
+    //   in a product, an acknowledgment in the product documentation would be
+    //   appreciated but is not required.
+    // 2. Altered source versions must be plainly marked as such, and must not be
+    //   misrepresented as being the original software.
+    // 3. This notice may not be removed or altered from any source distribution.
+
+    var constants$2$1 = {
+
+      /* Allowed flush values; see deflate() and inflate() below for details */
+      Z_NO_FLUSH:         0,
+      Z_PARTIAL_FLUSH:    1,
+      Z_SYNC_FLUSH:       2,
+      Z_FULL_FLUSH:       3,
+      Z_FINISH:           4,
+      Z_BLOCK:            5,
+      Z_TREES:            6,
+
+      /* Return codes for the compression/decompression functions. Negative values
+      * are errors, positive values are used for special but normal events.
+      */
+      Z_OK:               0,
+      Z_STREAM_END:       1,
+      Z_NEED_DICT:        2,
+      Z_ERRNO:           -1,
+      Z_STREAM_ERROR:    -2,
+      Z_DATA_ERROR:      -3,
+      Z_MEM_ERROR:       -4,
+      Z_BUF_ERROR:       -5,
+      //Z_VERSION_ERROR: -6,
+
+      /* compression levels */
+      Z_NO_COMPRESSION:         0,
+      Z_BEST_SPEED:             1,
+      Z_BEST_COMPRESSION:       9,
+      Z_DEFAULT_COMPRESSION:   -1,
+
+
+      Z_FILTERED:               1,
+      Z_HUFFMAN_ONLY:           2,
+      Z_RLE:                    3,
+      Z_FIXED:                  4,
+      Z_DEFAULT_STRATEGY:       0,
+
+      /* Possible values of the data_type field (though see inflate()) */
+      Z_BINARY:                 0,
+      Z_TEXT:                   1,
+      //Z_ASCII:                1, // = Z_TEXT (deprecated)
+      Z_UNKNOWN:                2,
+
+      /* The deflate compression method */
+      Z_DEFLATED:               8
+      //Z_NULL:                 null // Use -1 or null inline, depending on var type
+    };
+
+    // (C) 1995-2013 Jean-loup Gailly and Mark Adler
+    // (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+    //
+    // This software is provided 'as-is', without any express or implied
+    // warranty. In no event will the authors be held liable for any damages
+    // arising from the use of this software.
+    //
+    // Permission is granted to anyone to use this software for any purpose,
+    // including commercial applications, and to alter it and redistribute it
+    // freely, subject to the following restrictions:
+    //
+    // 1. The origin of this software must not be misrepresented; you must not
+    //   claim that you wrote the original software. If you use this software
+    //   in a product, an acknowledgment in the product documentation would be
+    //   appreciated but is not required.
+    // 2. Altered source versions must be plainly marked as such, and must not be
+    //   misrepresented as being the original software.
+    // 3. This notice may not be removed or altered from any source distribution.
+
+    const { _tr_init, _tr_stored_block, _tr_flush_block, _tr_tally, _tr_align } = trees;
+
+
+
+
+    /* Public constants ==========================================================*/
+    /* ===========================================================================*/
+
+    const {
+      Z_NO_FLUSH: Z_NO_FLUSH$2, Z_PARTIAL_FLUSH, Z_FULL_FLUSH: Z_FULL_FLUSH$1, Z_FINISH: Z_FINISH$3, Z_BLOCK: Z_BLOCK$1,
+      Z_OK: Z_OK$3, Z_STREAM_END: Z_STREAM_END$3, Z_STREAM_ERROR: Z_STREAM_ERROR$2, Z_DATA_ERROR: Z_DATA_ERROR$2, Z_BUF_ERROR: Z_BUF_ERROR$1,
+      Z_DEFAULT_COMPRESSION: Z_DEFAULT_COMPRESSION$1,
+      Z_FILTERED, Z_HUFFMAN_ONLY, Z_RLE, Z_FIXED, Z_DEFAULT_STRATEGY: Z_DEFAULT_STRATEGY$1,
+      Z_UNKNOWN,
+      Z_DEFLATED: Z_DEFLATED$2
+    } = constants$2$1;
+
+    /*============================================================================*/
+
+
+    const MAX_MEM_LEVEL = 9;
+    /* Maximum value for memLevel in deflateInit2 */
+    const MAX_WBITS$1 = 15;
+    /* 32K LZ77 window */
+    const DEF_MEM_LEVEL = 8;
+
+
+    const LENGTH_CODES  = 29;
+    /* number of length codes, not counting the special END_BLOCK code */
+    const LITERALS      = 256;
+    /* number of literal bytes 0..255 */
+    const L_CODES       = LITERALS + 1 + LENGTH_CODES;
+    /* number of Literal or Length codes, including the END_BLOCK code */
+    const D_CODES       = 30;
+    /* number of distance codes */
+    const BL_CODES      = 19;
+    /* number of codes used to transfer the bit lengths */
+    const HEAP_SIZE     = 2 * L_CODES + 1;
+    /* maximum heap size */
+    const MAX_BITS  = 15;
+    /* All codes must not exceed MAX_BITS bits */
+
+    const MIN_MATCH = 3;
+    const MAX_MATCH = 258;
+    const MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1);
+
+    const PRESET_DICT = 0x20;
+
+    const INIT_STATE    =  42;    /* zlib header -> BUSY_STATE */
+    //#ifdef GZIP
+    const GZIP_STATE    =  57;    /* gzip header -> BUSY_STATE | EXTRA_STATE */
+    //#endif
+    const EXTRA_STATE   =  69;    /* gzip extra block -> NAME_STATE */
+    const NAME_STATE    =  73;    /* gzip file name -> COMMENT_STATE */
+    const COMMENT_STATE =  91;    /* gzip comment -> HCRC_STATE */
+    const HCRC_STATE    = 103;    /* gzip header CRC -> BUSY_STATE */
+    const BUSY_STATE    = 113;    /* deflate -> FINISH_STATE */
+    const FINISH_STATE  = 666;    /* stream complete */
+
+    const BS_NEED_MORE      = 1; /* block not completed, need more input or more output */
+    const BS_BLOCK_DONE     = 2; /* block flush performed */
+    const BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */
+    const BS_FINISH_DONE    = 4; /* finish done, accept no more input or output */
+
+    const OS_CODE = 0x03; // Unix :) . Don't detect, use this default.
+
+    const err = (strm, errorCode) => {
+      strm.msg = messages$1[errorCode];
+      return errorCode;
+    };
+
+    const rank = (f) => {
+      return ((f) * 2) - ((f) > 4 ? 9 : 0);
+    };
+
+    const zero = (buf) => {
+      let len = buf.length; while (--len >= 0) { buf[len] = 0; }
+    };
+
+    /* ===========================================================================
+     * Slide the hash table when sliding the window down (could be avoided with 32
+     * bit values at the expense of memory usage). We slide even when level == 0 to
+     * keep the hash table consistent if we switch back to level > 0 later.
+     */
+    const slide_hash = (s) => {
+      let n, m;
+      let p;
+      let wsize = s.w_size;
+
+      n = s.hash_size;
+      p = n;
+      do {
+        m = s.head[--p];
+        s.head[p] = (m >= wsize ? m - wsize : 0);
+      } while (--n);
+      n = wsize;
+    //#ifndef FASTEST
+      p = n;
+      do {
+        m = s.prev[--p];
+        s.prev[p] = (m >= wsize ? m - wsize : 0);
+        /* If n is not on any hash chain, prev[n] is garbage but
+         * its value will never be used.
+         */
+      } while (--n);
+    //#endif
+    };
+
+    /* eslint-disable new-cap */
+    let HASH_ZLIB = (s, prev, data) => ((prev << s.hash_shift) ^ data) & s.hash_mask;
+    // This hash causes less collisions, https://github.com/nodeca/pako/issues/135
+    // But breaks binary compatibility
+    //let HASH_FAST = (s, prev, data) => ((prev << 8) + (prev >> 8) + (data << 4)) & s.hash_mask;
+    let HASH = HASH_ZLIB;
+
+
+    /* =========================================================================
+     * Flush as much pending output as possible. All deflate() output, except for
+     * some deflate_stored() output, goes through this function so some
+     * applications may wish to modify it to avoid allocating a large
+     * strm->next_out buffer and copying into it. (See also read_buf()).
+     */
+    const flush_pending = (strm) => {
+      const s = strm.state;
+
+      //_tr_flush_bits(s);
+      let len = s.pending;
+      if (len > strm.avail_out) {
+        len = strm.avail_out;
+      }
+      if (len === 0) { return; }
+
+      strm.output.set(s.pending_buf.subarray(s.pending_out, s.pending_out + len), strm.next_out);
+      strm.next_out  += len;
+      s.pending_out  += len;
+      strm.total_out += len;
+      strm.avail_out -= len;
+      s.pending      -= len;
+      if (s.pending === 0) {
+        s.pending_out = 0;
+      }
+    };
+
+
+    const flush_block_only = (s, last) => {
+      _tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last);
+      s.block_start = s.strstart;
+      flush_pending(s.strm);
+    };
+
+
+    const put_byte = (s, b) => {
+      s.pending_buf[s.pending++] = b;
+    };
+
+
+    /* =========================================================================
+     * Put a short in the pending buffer. The 16-bit value is put in MSB order.
+     * IN assertion: the stream state is correct and there is enough room in
+     * pending_buf.
+     */
+    const putShortMSB = (s, b) => {
+
+      //  put_byte(s, (Byte)(b >> 8));
+    //  put_byte(s, (Byte)(b & 0xff));
+      s.pending_buf[s.pending++] = (b >>> 8) & 0xff;
+      s.pending_buf[s.pending++] = b & 0xff;
+    };
+
+
+    /* ===========================================================================
+     * Read a new buffer from the current input stream, update the adler32
+     * and total number of bytes read.  All deflate() input goes through
+     * this function so some applications may wish to modify it to avoid
+     * allocating a large strm->input buffer and copying from it.
+     * (See also flush_pending()).
+     */
+    const read_buf = (strm, buf, start, size) => {
+
+      let len = strm.avail_in;
+
+      if (len > size) { len = size; }
+      if (len === 0) { return 0; }
+
+      strm.avail_in -= len;
+
+      // zmemcpy(buf, strm->next_in, len);
+      buf.set(strm.input.subarray(strm.next_in, strm.next_in + len), start);
+      if (strm.state.wrap === 1) {
+        strm.adler = adler32_1$1(strm.adler, buf, len, start);
+      }
+
+      else if (strm.state.wrap === 2) {
+        strm.adler = crc32_1$1(strm.adler, buf, len, start);
+      }
+
+      strm.next_in += len;
+      strm.total_in += len;
+
+      return len;
+    };
+
+
+    /* ===========================================================================
+     * Set match_start to the longest match starting at the given string and
+     * return its length. Matches shorter or equal to prev_length are discarded,
+     * in which case the result is equal to prev_length and match_start is
+     * garbage.
+     * IN assertions: cur_match is the head of the hash chain for the current
+     *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
+     * OUT assertion: the match length is not greater than s->lookahead.
+     */
+    const longest_match = (s, cur_match) => {
+
+      let chain_length = s.max_chain_length;      /* max hash chain length */
+      let scan = s.strstart; /* current string */
+      let match;                       /* matched string */
+      let len;                           /* length of current match */
+      let best_len = s.prev_length;              /* best match length so far */
+      let nice_match = s.nice_match;             /* stop if match long enough */
+      const limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ?
+          s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/;
+
+      const _win = s.window; // shortcut
+
+      const wmask = s.w_mask;
+      const prev  = s.prev;
+
+      /* Stop when cur_match becomes <= limit. To simplify the code,
+       * we prevent matches with the string of window index 0.
+       */
+
+      const strend = s.strstart + MAX_MATCH;
+      let scan_end1  = _win[scan + best_len - 1];
+      let scan_end   = _win[scan + best_len];
+
+      /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
+       * It is easy to get rid of this optimization if necessary.
+       */
+      // Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
+
+      /* Do not waste too much time if we already have a good match: */
+      if (s.prev_length >= s.good_match) {
+        chain_length >>= 2;
+      }
+      /* Do not look for matches beyond the end of the input. This is necessary
+       * to make deflate deterministic.
+       */
+      if (nice_match > s.lookahead) { nice_match = s.lookahead; }
+
+      // Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
+
+      do {
+        // Assert(cur_match < s->strstart, "no future");
+        match = cur_match;
+
+        /* Skip to next match if the match length cannot increase
+         * or if the match length is less than 2.  Note that the checks below
+         * for insufficient lookahead only occur occasionally for performance
+         * reasons.  Therefore uninitialized memory will be accessed, and
+         * conditional jumps will be made that depend on those values.
+         * However the length of the match is limited to the lookahead, so
+         * the output of deflate is not affected by the uninitialized values.
+         */
+
+        if (_win[match + best_len]     !== scan_end  ||
+            _win[match + best_len - 1] !== scan_end1 ||
+            _win[match]                !== _win[scan] ||
+            _win[++match]              !== _win[scan + 1]) {
+          continue;
+        }
+
+        /* The check at best_len-1 can be removed because it will be made
+         * again later. (This heuristic is not always a win.)
+         * It is not necessary to compare scan[2] and match[2] since they
+         * are always equal when the other bytes match, given that
+         * the hash keys are equal and that HASH_BITS >= 8.
+         */
+        scan += 2;
+        match++;
+        // Assert(*scan == *match, "match[2]?");
+
+        /* We check for insufficient lookahead only every 8th comparison;
+         * the 256th check will be made at strstart+258.
+         */
+        do {
+          /*jshint noempty:false*/
+        } while (_win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
+                 _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
+                 _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
+                 _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&
+                 scan < strend);
+
+        // Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
+
+        len = MAX_MATCH - (strend - scan);
+        scan = strend - MAX_MATCH;
+
+        if (len > best_len) {
+          s.match_start = cur_match;
+          best_len = len;
+          if (len >= nice_match) {
+            break;
+          }
+          scan_end1  = _win[scan + best_len - 1];
+          scan_end   = _win[scan + best_len];
+        }
+      } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length !== 0);
+
+      if (best_len <= s.lookahead) {
+        return best_len;
+      }
+      return s.lookahead;
+    };
+
+
+    /* ===========================================================================
+     * Fill the window when the lookahead becomes insufficient.
+     * Updates strstart and lookahead.
+     *
+     * IN assertion: lookahead < MIN_LOOKAHEAD
+     * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
+     *    At least one byte has been read, or avail_in == 0; reads are
+     *    performed for at least two bytes (required for the zip translate_eol
+     *    option -- not supported here).
+     */
+    const fill_window = (s) => {
+
+      const _w_size = s.w_size;
+      let n, more, str;
+
+      //Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");
+
+      do {
+        more = s.window_size - s.lookahead - s.strstart;
+
+        // JS ints have 32 bit, block below not needed
+        /* Deal with !@#$% 64K limit: */
+        //if (sizeof(int) <= 2) {
+        //    if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
+        //        more = wsize;
+        //
+        //  } else if (more == (unsigned)(-1)) {
+        //        /* Very unlikely, but possible on 16 bit machine if
+        //         * strstart == 0 && lookahead == 1 (input done a byte at time)
+        //         */
+        //        more--;
+        //    }
+        //}
+
+
+        /* If the window is almost full and there is insufficient lookahead,
+         * move the upper half to the lower one to make room in the upper half.
+         */
+        if (s.strstart >= _w_size + (_w_size - MIN_LOOKAHEAD)) {
+
+          s.window.set(s.window.subarray(_w_size, _w_size + _w_size - more), 0);
+          s.match_start -= _w_size;
+          s.strstart -= _w_size;
+          /* we now have strstart >= MAX_DIST */
+          s.block_start -= _w_size;
+          if (s.insert > s.strstart) {
+            s.insert = s.strstart;
+          }
+          slide_hash(s);
+          more += _w_size;
+        }
+        if (s.strm.avail_in === 0) {
+          break;
+        }
+
+        /* If there was no sliding:
+         *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
+         *    more == window_size - lookahead - strstart
+         * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
+         * => more >= window_size - 2*WSIZE + 2
+         * In the BIG_MEM or MMAP case (not yet supported),
+         *   window_size == input_size + MIN_LOOKAHEAD  &&
+         *   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
+         * Otherwise, window_size == 2*WSIZE so more >= 2.
+         * If there was sliding, more >= WSIZE. So in all cases, more >= 2.
+         */
+        //Assert(more >= 2, "more < 2");
+        n = read_buf(s.strm, s.window, s.strstart + s.lookahead, more);
+        s.lookahead += n;
+
+        /* Initialize the hash value now that we have some input: */
+        if (s.lookahead + s.insert >= MIN_MATCH) {
+          str = s.strstart - s.insert;
+          s.ins_h = s.window[str];
+
+          /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */
+          s.ins_h = HASH(s, s.ins_h, s.window[str + 1]);
+    //#if MIN_MATCH != 3
+    //        Call update_hash() MIN_MATCH-3 more times
+    //#endif
+          while (s.insert) {
+            /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */
+            s.ins_h = HASH(s, s.ins_h, s.window[str + MIN_MATCH - 1]);
+
+            s.prev[str & s.w_mask] = s.head[s.ins_h];
+            s.head[s.ins_h] = str;
+            str++;
+            s.insert--;
+            if (s.lookahead + s.insert < MIN_MATCH) {
+              break;
+            }
+          }
+        }
+        /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
+         * but this is not important since only literal bytes will be emitted.
+         */
+
+      } while (s.lookahead < MIN_LOOKAHEAD && s.strm.avail_in !== 0);
+
+      /* If the WIN_INIT bytes after the end of the current data have never been
+       * written, then zero those bytes in order to avoid memory check reports of
+       * the use of uninitialized (or uninitialised as Julian writes) bytes by
+       * the longest match routines.  Update the high water mark for the next
+       * time through here.  WIN_INIT is set to MAX_MATCH since the longest match
+       * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.
+       */
+    //  if (s.high_water < s.window_size) {
+    //    const curr = s.strstart + s.lookahead;
+    //    let init = 0;
+    //
+    //    if (s.high_water < curr) {
+    //      /* Previous high water mark below current data -- zero WIN_INIT
+    //       * bytes or up to end of window, whichever is less.
+    //       */
+    //      init = s.window_size - curr;
+    //      if (init > WIN_INIT)
+    //        init = WIN_INIT;
+    //      zmemzero(s->window + curr, (unsigned)init);
+    //      s->high_water = curr + init;
+    //    }
+    //    else if (s->high_water < (ulg)curr + WIN_INIT) {
+    //      /* High water mark at or above current data, but below current data
+    //       * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up
+    //       * to end of window, whichever is less.
+    //       */
+    //      init = (ulg)curr + WIN_INIT - s->high_water;
+    //      if (init > s->window_size - s->high_water)
+    //        init = s->window_size - s->high_water;
+    //      zmemzero(s->window + s->high_water, (unsigned)init);
+    //      s->high_water += init;
+    //    }
+    //  }
+    //
+    //  Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
+    //    "not enough room for search");
+    };
+
+    /* ===========================================================================
+     * Copy without compression as much as possible from the input stream, return
+     * the current block state.
+     *
+     * In case deflateParams() is used to later switch to a non-zero compression
+     * level, s->matches (otherwise unused when storing) keeps track of the number
+     * of hash table slides to perform. If s->matches is 1, then one hash table
+     * slide will be done when switching. If s->matches is 2, the maximum value
+     * allowed here, then the hash table will be cleared, since two or more slides
+     * is the same as a clear.
+     *
+     * deflate_stored() is written to minimize the number of times an input byte is
+     * copied. It is most efficient with large input and output buffers, which
+     * maximizes the opportunites to have a single copy from next_in to next_out.
+     */
+    const deflate_stored = (s, flush) => {
+
+      /* Smallest worthy block size when not flushing or finishing. By default
+       * this is 32K. This can be as small as 507 bytes for memLevel == 1. For
+       * large input and output buffers, the stored block size will be larger.
+       */
+      let min_block = s.pending_buf_size - 5 > s.w_size ? s.w_size : s.pending_buf_size - 5;
+
+      /* Copy as many min_block or larger stored blocks directly to next_out as
+       * possible. If flushing, copy the remaining available input to next_out as
+       * stored blocks, if there is enough space.
+       */
+      let len, left, have, last = 0;
+      let used = s.strm.avail_in;
+      do {
+        /* Set len to the maximum size block that we can copy directly with the
+         * available input data and output space. Set left to how much of that
+         * would be copied from what's left in the window.
+         */
+        len = 65535/* MAX_STORED */;     /* maximum deflate stored block length */
+        have = (s.bi_valid + 42) >> 3;     /* number of header bytes */
+        if (s.strm.avail_out < have) {         /* need room for header */
+          break;
+        }
+          /* maximum stored block length that will fit in avail_out: */
+        have = s.strm.avail_out - have;
+        left = s.strstart - s.block_start;  /* bytes left in window */
+        if (len > left + s.strm.avail_in) {
+          len = left + s.strm.avail_in;   /* limit len to the input */
+        }
+        if (len > have) {
+          len = have;             /* limit len to the output */
+        }
+
+        /* If the stored block would be less than min_block in length, or if
+         * unable to copy all of the available input when flushing, then try
+         * copying to the window and the pending buffer instead. Also don't
+         * write an empty block when flushing -- deflate() does that.
+         */
+        if (len < min_block && ((len === 0 && flush !== Z_FINISH$3) ||
+                            flush === Z_NO_FLUSH$2 ||
+                            len !== left + s.strm.avail_in)) {
+          break;
+        }
+
+        /* Make a dummy stored block in pending to get the header bytes,
+         * including any pending bits. This also updates the debugging counts.
+         */
+        last = flush === Z_FINISH$3 && len === left + s.strm.avail_in ? 1 : 0;
+        _tr_stored_block(s, 0, 0, last);
+
+        /* Replace the lengths in the dummy stored block with len. */
+        s.pending_buf[s.pending - 4] = len;
+        s.pending_buf[s.pending - 3] = len >> 8;
+        s.pending_buf[s.pending - 2] = ~len;
+        s.pending_buf[s.pending - 1] = ~len >> 8;
+
+        /* Write the stored block header bytes. */
+        flush_pending(s.strm);
+
+    //#ifdef ZLIB_DEBUG
+    //    /* Update debugging counts for the data about to be copied. */
+    //    s->compressed_len += len << 3;
+    //    s->bits_sent += len << 3;
+    //#endif
+
+        /* Copy uncompressed bytes from the window to next_out. */
+        if (left) {
+          if (left > len) {
+            left = len;
+          }
+          //zmemcpy(s->strm->next_out, s->window + s->block_start, left);
+          s.strm.output.set(s.window.subarray(s.block_start, s.block_start + left), s.strm.next_out);
+          s.strm.next_out += left;
+          s.strm.avail_out -= left;
+          s.strm.total_out += left;
+          s.block_start += left;
+          len -= left;
+        }
+
+        /* Copy uncompressed bytes directly from next_in to next_out, updating
+         * the check value.
+         */
+        if (len) {
+          read_buf(s.strm, s.strm.output, s.strm.next_out, len);
+          s.strm.next_out += len;
+          s.strm.avail_out -= len;
+          s.strm.total_out += len;
+        }
+      } while (last === 0);
+
+      /* Update the sliding window with the last s->w_size bytes of the copied
+       * data, or append all of the copied data to the existing window if less
+       * than s->w_size bytes were copied. Also update the number of bytes to
+       * insert in the hash tables, in the event that deflateParams() switches to
+       * a non-zero compression level.
+       */
+      used -= s.strm.avail_in;    /* number of input bytes directly copied */
+      if (used) {
+        /* If any input was used, then no unused input remains in the window,
+         * therefore s->block_start == s->strstart.
+         */
+        if (used >= s.w_size) {  /* supplant the previous history */
+          s.matches = 2;     /* clear hash */
+          //zmemcpy(s->window, s->strm->next_in - s->w_size, s->w_size);
+          s.window.set(s.strm.input.subarray(s.strm.next_in - s.w_size, s.strm.next_in), 0);
+          s.strstart = s.w_size;
+          s.insert = s.strstart;
+        }
+        else {
+          if (s.window_size - s.strstart <= used) {
+            /* Slide the window down. */
+            s.strstart -= s.w_size;
+            //zmemcpy(s->window, s->window + s->w_size, s->strstart);
+            s.window.set(s.window.subarray(s.w_size, s.w_size + s.strstart), 0);
+            if (s.matches < 2) {
+              s.matches++;   /* add a pending slide_hash() */
+            }
+            if (s.insert > s.strstart) {
+              s.insert = s.strstart;
+            }
+          }
+          //zmemcpy(s->window + s->strstart, s->strm->next_in - used, used);
+          s.window.set(s.strm.input.subarray(s.strm.next_in - used, s.strm.next_in), s.strstart);
+          s.strstart += used;
+          s.insert += used > s.w_size - s.insert ? s.w_size - s.insert : used;
+        }
+        s.block_start = s.strstart;
+      }
+      if (s.high_water < s.strstart) {
+        s.high_water = s.strstart;
+      }
+
+      /* If the last block was written to next_out, then done. */
+      if (last) {
+        return BS_FINISH_DONE;
+      }
+
+      /* If flushing and all input has been consumed, then done. */
+      if (flush !== Z_NO_FLUSH$2 && flush !== Z_FINISH$3 &&
+        s.strm.avail_in === 0 && s.strstart === s.block_start) {
+        return BS_BLOCK_DONE;
+      }
+
+      /* Fill the window with any remaining input. */
+      have = s.window_size - s.strstart;
+      if (s.strm.avail_in > have && s.block_start >= s.w_size) {
+        /* Slide the window down. */
+        s.block_start -= s.w_size;
+        s.strstart -= s.w_size;
+        //zmemcpy(s->window, s->window + s->w_size, s->strstart);
+        s.window.set(s.window.subarray(s.w_size, s.w_size + s.strstart), 0);
+        if (s.matches < 2) {
+          s.matches++;       /* add a pending slide_hash() */
+        }
+        have += s.w_size;      /* more space now */
+        if (s.insert > s.strstart) {
+          s.insert = s.strstart;
+        }
+      }
+      if (have > s.strm.avail_in) {
+        have = s.strm.avail_in;
+      }
+      if (have) {
+        read_buf(s.strm, s.window, s.strstart, have);
+        s.strstart += have;
+        s.insert += have > s.w_size - s.insert ? s.w_size - s.insert : have;
+      }
+      if (s.high_water < s.strstart) {
+        s.high_water = s.strstart;
+      }
+
+      /* There was not enough avail_out to write a complete worthy or flushed
+       * stored block to next_out. Write a stored block to pending instead, if we
+       * have enough input for a worthy block, or if flushing and there is enough
+       * room for the remaining input as a stored block in the pending buffer.
+       */
+      have = (s.bi_valid + 42) >> 3;     /* number of header bytes */
+        /* maximum stored block length that will fit in pending: */
+      have = s.pending_buf_size - have > 65535/* MAX_STORED */ ? 65535/* MAX_STORED */ : s.pending_buf_size - have;
+      min_block = have > s.w_size ? s.w_size : have;
+      left = s.strstart - s.block_start;
+      if (left >= min_block ||
+         ((left || flush === Z_FINISH$3) && flush !== Z_NO_FLUSH$2 &&
+         s.strm.avail_in === 0 && left <= have)) {
+        len = left > have ? have : left;
+        last = flush === Z_FINISH$3 && s.strm.avail_in === 0 &&
+             len === left ? 1 : 0;
+        _tr_stored_block(s, s.block_start, len, last);
+        s.block_start += len;
+        flush_pending(s.strm);
+      }
+
+      /* We've done all we can with the available input and output. */
+      return last ? BS_FINISH_STARTED : BS_NEED_MORE;
+    };
+
+
+    /* ===========================================================================
+     * Compress as much as possible from the input stream, return the current
+     * block state.
+     * This function does not perform lazy evaluation of matches and inserts
+     * new strings in the dictionary only for unmatched strings or for short
+     * matches. It is used only for the fast compression options.
+     */
+    const deflate_fast = (s, flush) => {
+
+      let hash_head;        /* head of the hash chain */
+      let bflush;           /* set if current block must be flushed */
+
+      for (;;) {
+        /* Make sure that we always have enough lookahead, except
+         * at the end of the input file. We need MAX_MATCH bytes
+         * for the next match, plus MIN_MATCH bytes to insert the
+         * string following the next match.
+         */
+        if (s.lookahead < MIN_LOOKAHEAD) {
+          fill_window(s);
+          if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH$2) {
+            return BS_NEED_MORE;
+          }
+          if (s.lookahead === 0) {
+            break; /* flush the current block */
+          }
+        }
+
+        /* Insert the string window[strstart .. strstart+2] in the
+         * dictionary, and set hash_head to the head of the hash chain:
+         */
+        hash_head = 0/*NIL*/;
+        if (s.lookahead >= MIN_MATCH) {
+          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
+          s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);
+          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
+          s.head[s.ins_h] = s.strstart;
+          /***/
+        }
+
+        /* Find the longest match, discarding those <= prev_length.
+         * At this point we have always match_length < MIN_MATCH
+         */
+        if (hash_head !== 0/*NIL*/ && ((s.strstart - hash_head) <= (s.w_size - MIN_LOOKAHEAD))) {
+          /* To simplify the code, we prevent matches with the string
+           * of window index 0 (in particular we have to avoid a match
+           * of the string with itself at the start of the input file).
+           */
+          s.match_length = longest_match(s, hash_head);
+          /* longest_match() sets match_start */
+        }
+        if (s.match_length >= MIN_MATCH) {
+          // check_match(s, s.strstart, s.match_start, s.match_length); // for debug only
+
+          /*** _tr_tally_dist(s, s.strstart - s.match_start,
+                         s.match_length - MIN_MATCH, bflush); ***/
+          bflush = _tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH);
+
+          s.lookahead -= s.match_length;
+
+          /* Insert new strings in the hash table only if the match length
+           * is not too large. This saves time but degrades compression.
+           */
+          if (s.match_length <= s.max_lazy_match/*max_insert_length*/ && s.lookahead >= MIN_MATCH) {
+            s.match_length--; /* string at strstart already in table */
+            do {
+              s.strstart++;
+              /*** INSERT_STRING(s, s.strstart, hash_head); ***/
+              s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);
+              hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
+              s.head[s.ins_h] = s.strstart;
+              /***/
+              /* strstart never exceeds WSIZE-MAX_MATCH, so there are
+               * always MIN_MATCH bytes ahead.
+               */
+            } while (--s.match_length !== 0);
+            s.strstart++;
+          } else
+          {
+            s.strstart += s.match_length;
+            s.match_length = 0;
+            s.ins_h = s.window[s.strstart];
+            /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */
+            s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + 1]);
+
+    //#if MIN_MATCH != 3
+    //                Call UPDATE_HASH() MIN_MATCH-3 more times
+    //#endif
+            /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
+             * matter since it will be recomputed at next deflate call.
+             */
+          }
+        } else {
+          /* No match, output a literal byte */
+          //Tracevv((stderr,"%c", s.window[s.strstart]));
+          /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
+          bflush = _tr_tally(s, 0, s.window[s.strstart]);
+
+          s.lookahead--;
+          s.strstart++;
+        }
+        if (bflush) {
+          /*** FLUSH_BLOCK(s, 0); ***/
+          flush_block_only(s, false);
+          if (s.strm.avail_out === 0) {
+            return BS_NEED_MORE;
+          }
+          /***/
+        }
+      }
+      s.insert = ((s.strstart < (MIN_MATCH - 1)) ? s.strstart : MIN_MATCH - 1);
+      if (flush === Z_FINISH$3) {
+        /*** FLUSH_BLOCK(s, 1); ***/
+        flush_block_only(s, true);
+        if (s.strm.avail_out === 0) {
+          return BS_FINISH_STARTED;
+        }
+        /***/
+        return BS_FINISH_DONE;
+      }
+      if (s.sym_next) {
+        /*** FLUSH_BLOCK(s, 0); ***/
+        flush_block_only(s, false);
+        if (s.strm.avail_out === 0) {
+          return BS_NEED_MORE;
+        }
+        /***/
+      }
+      return BS_BLOCK_DONE;
+    };
+
+    /* ===========================================================================
+     * Same as above, but achieves better compression. We use a lazy
+     * evaluation for matches: a match is finally adopted only if there is
+     * no better match at the next window position.
+     */
+    const deflate_slow = (s, flush) => {
+
+      let hash_head;          /* head of hash chain */
+      let bflush;              /* set if current block must be flushed */
+
+      let max_insert;
+
+      /* Process the input block. */
+      for (;;) {
+        /* Make sure that we always have enough lookahead, except
+         * at the end of the input file. We need MAX_MATCH bytes
+         * for the next match, plus MIN_MATCH bytes to insert the
+         * string following the next match.
+         */
+        if (s.lookahead < MIN_LOOKAHEAD) {
+          fill_window(s);
+          if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH$2) {
+            return BS_NEED_MORE;
+          }
+          if (s.lookahead === 0) { break; } /* flush the current block */
+        }
+
+        /* Insert the string window[strstart .. strstart+2] in the
+         * dictionary, and set hash_head to the head of the hash chain:
+         */
+        hash_head = 0/*NIL*/;
+        if (s.lookahead >= MIN_MATCH) {
+          /*** INSERT_STRING(s, s.strstart, hash_head); ***/
+          s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);
+          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
+          s.head[s.ins_h] = s.strstart;
+          /***/
+        }
+
+        /* Find the longest match, discarding those <= prev_length.
+         */
+        s.prev_length = s.match_length;
+        s.prev_match = s.match_start;
+        s.match_length = MIN_MATCH - 1;
+
+        if (hash_head !== 0/*NIL*/ && s.prev_length < s.max_lazy_match &&
+            s.strstart - hash_head <= (s.w_size - MIN_LOOKAHEAD)/*MAX_DIST(s)*/) {
+          /* To simplify the code, we prevent matches with the string
+           * of window index 0 (in particular we have to avoid a match
+           * of the string with itself at the start of the input file).
+           */
+          s.match_length = longest_match(s, hash_head);
+          /* longest_match() sets match_start */
+
+          if (s.match_length <= 5 &&
+             (s.strategy === Z_FILTERED || (s.match_length === MIN_MATCH && s.strstart - s.match_start > 4096/*TOO_FAR*/))) {
+
+            /* If prev_match is also MIN_MATCH, match_start is garbage
+             * but we will ignore the current match anyway.
+             */
+            s.match_length = MIN_MATCH - 1;
+          }
+        }
+        /* If there was a match at the previous step and the current
+         * match is not better, output the previous match:
+         */
+        if (s.prev_length >= MIN_MATCH && s.match_length <= s.prev_length) {
+          max_insert = s.strstart + s.lookahead - MIN_MATCH;
+          /* Do not insert strings in hash table beyond this. */
+
+          //check_match(s, s.strstart-1, s.prev_match, s.prev_length);
+
+          /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match,
+                         s.prev_length - MIN_MATCH, bflush);***/
+          bflush = _tr_tally(s, s.strstart - 1 - s.prev_match, s.prev_length - MIN_MATCH);
+          /* Insert in hash table all strings up to the end of the match.
+           * strstart-1 and strstart are already inserted. If there is not
+           * enough lookahead, the last two strings are not inserted in
+           * the hash table.
+           */
+          s.lookahead -= s.prev_length - 1;
+          s.prev_length -= 2;
+          do {
+            if (++s.strstart <= max_insert) {
+              /*** INSERT_STRING(s, s.strstart, hash_head); ***/
+              s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);
+              hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];
+              s.head[s.ins_h] = s.strstart;
+              /***/
+            }
+          } while (--s.prev_length !== 0);
+          s.match_available = 0;
+          s.match_length = MIN_MATCH - 1;
+          s.strstart++;
+
+          if (bflush) {
+            /*** FLUSH_BLOCK(s, 0); ***/
+            flush_block_only(s, false);
+            if (s.strm.avail_out === 0) {
+              return BS_NEED_MORE;
+            }
+            /***/
+          }
+
+        } else if (s.match_available) {
+          /* If there was no match at the previous position, output a
+           * single literal. If there was a match but the current match
+           * is longer, truncate the previous match to a single literal.
+           */
+          //Tracevv((stderr,"%c", s->window[s->strstart-1]));
+          /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
+          bflush = _tr_tally(s, 0, s.window[s.strstart - 1]);
+
+          if (bflush) {
+            /*** FLUSH_BLOCK_ONLY(s, 0) ***/
+            flush_block_only(s, false);
+            /***/
+          }
+          s.strstart++;
+          s.lookahead--;
+          if (s.strm.avail_out === 0) {
+            return BS_NEED_MORE;
+          }
+        } else {
+          /* There is no previous match to compare with, wait for
+           * the next step to decide.
+           */
+          s.match_available = 1;
+          s.strstart++;
+          s.lookahead--;
+        }
+      }
+      //Assert (flush != Z_NO_FLUSH, "no flush?");
+      if (s.match_available) {
+        //Tracevv((stderr,"%c", s->window[s->strstart-1]));
+        /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/
+        bflush = _tr_tally(s, 0, s.window[s.strstart - 1]);
+
+        s.match_available = 0;
+      }
+      s.insert = s.strstart < MIN_MATCH - 1 ? s.strstart : MIN_MATCH - 1;
+      if (flush === Z_FINISH$3) {
+        /*** FLUSH_BLOCK(s, 1); ***/
+        flush_block_only(s, true);
+        if (s.strm.avail_out === 0) {
+          return BS_FINISH_STARTED;
+        }
+        /***/
+        return BS_FINISH_DONE;
+      }
+      if (s.sym_next) {
+        /*** FLUSH_BLOCK(s, 0); ***/
+        flush_block_only(s, false);
+        if (s.strm.avail_out === 0) {
+          return BS_NEED_MORE;
+        }
+        /***/
+      }
+
+      return BS_BLOCK_DONE;
+    };
+
+
+    /* ===========================================================================
+     * For Z_RLE, simply look for runs of bytes, generate matches only of distance
+     * one.  Do not maintain a hash table.  (It will be regenerated if this run of
+     * deflate switches away from Z_RLE.)
+     */
+    const deflate_rle = (s, flush) => {
+
+      let bflush;            /* set if current block must be flushed */
+      let prev;              /* byte at distance one to match */
+      let scan, strend;      /* scan goes up to strend for length of run */
+
+      const _win = s.window;
+
+      for (;;) {
+        /* Make sure that we always have enough lookahead, except
+         * at the end of the input file. We need MAX_MATCH bytes
+         * for the longest run, plus one for the unrolled loop.
+         */
+        if (s.lookahead <= MAX_MATCH) {
+          fill_window(s);
+          if (s.lookahead <= MAX_MATCH && flush === Z_NO_FLUSH$2) {
+            return BS_NEED_MORE;
+          }
+          if (s.lookahead === 0) { break; } /* flush the current block */
+        }
+
+        /* See how many times the previous byte repeats */
+        s.match_length = 0;
+        if (s.lookahead >= MIN_MATCH && s.strstart > 0) {
+          scan = s.strstart - 1;
+          prev = _win[scan];
+          if (prev === _win[++scan] && prev === _win[++scan] && prev === _win[++scan]) {
+            strend = s.strstart + MAX_MATCH;
+            do {
+              /*jshint noempty:false*/
+            } while (prev === _win[++scan] && prev === _win[++scan] &&
+                     prev === _win[++scan] && prev === _win[++scan] &&
+                     prev === _win[++scan] && prev === _win[++scan] &&
+                     prev === _win[++scan] && prev === _win[++scan] &&
+                     scan < strend);
+            s.match_length = MAX_MATCH - (strend - scan);
+            if (s.match_length > s.lookahead) {
+              s.match_length = s.lookahead;
+            }
+          }
+          //Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan");
+        }
+
+        /* Emit match if have run of MIN_MATCH or longer, else emit literal */
+        if (s.match_length >= MIN_MATCH) {
+          //check_match(s, s.strstart, s.strstart - 1, s.match_length);
+
+          /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/
+          bflush = _tr_tally(s, 1, s.match_length - MIN_MATCH);
+
+          s.lookahead -= s.match_length;
+          s.strstart += s.match_length;
+          s.match_length = 0;
+        } else {
+          /* No match, output a literal byte */
+          //Tracevv((stderr,"%c", s->window[s->strstart]));
+          /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
+          bflush = _tr_tally(s, 0, s.window[s.strstart]);
+
+          s.lookahead--;
+          s.strstart++;
+        }
+        if (bflush) {
+          /*** FLUSH_BLOCK(s, 0); ***/
+          flush_block_only(s, false);
+          if (s.strm.avail_out === 0) {
+            return BS_NEED_MORE;
+          }
+          /***/
+        }
+      }
+      s.insert = 0;
+      if (flush === Z_FINISH$3) {
+        /*** FLUSH_BLOCK(s, 1); ***/
+        flush_block_only(s, true);
+        if (s.strm.avail_out === 0) {
+          return BS_FINISH_STARTED;
+        }
+        /***/
+        return BS_FINISH_DONE;
+      }
+      if (s.sym_next) {
+        /*** FLUSH_BLOCK(s, 0); ***/
+        flush_block_only(s, false);
+        if (s.strm.avail_out === 0) {
+          return BS_NEED_MORE;
+        }
+        /***/
+      }
+      return BS_BLOCK_DONE;
+    };
+
+    /* ===========================================================================
+     * For Z_HUFFMAN_ONLY, do not look for matches.  Do not maintain a hash table.
+     * (It will be regenerated if this run of deflate switches away from Huffman.)
+     */
+    const deflate_huff = (s, flush) => {
+
+      let bflush;             /* set if current block must be flushed */
+
+      for (;;) {
+        /* Make sure that we have a literal to write. */
+        if (s.lookahead === 0) {
+          fill_window(s);
+          if (s.lookahead === 0) {
+            if (flush === Z_NO_FLUSH$2) {
+              return BS_NEED_MORE;
+            }
+            break;      /* flush the current block */
+          }
+        }
+
+        /* Output a literal byte */
+        s.match_length = 0;
+        //Tracevv((stderr,"%c", s->window[s->strstart]));
+        /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/
+        bflush = _tr_tally(s, 0, s.window[s.strstart]);
+        s.lookahead--;
+        s.strstart++;
+        if (bflush) {
+          /*** FLUSH_BLOCK(s, 0); ***/
+          flush_block_only(s, false);
+          if (s.strm.avail_out === 0) {
+            return BS_NEED_MORE;
+          }
+          /***/
+        }
+      }
+      s.insert = 0;
+      if (flush === Z_FINISH$3) {
+        /*** FLUSH_BLOCK(s, 1); ***/
+        flush_block_only(s, true);
+        if (s.strm.avail_out === 0) {
+          return BS_FINISH_STARTED;
+        }
+        /***/
+        return BS_FINISH_DONE;
+      }
+      if (s.sym_next) {
+        /*** FLUSH_BLOCK(s, 0); ***/
+        flush_block_only(s, false);
+        if (s.strm.avail_out === 0) {
+          return BS_NEED_MORE;
+        }
+        /***/
+      }
+      return BS_BLOCK_DONE;
+    };
+
+    /* Values for max_lazy_match, good_match and max_chain_length, depending on
+     * the desired pack level (0..9). The values given below have been tuned to
+     * exclude worst case performance for pathological files. Better values may be
+     * found for specific files.
+     */
+    function Config(good_length, max_lazy, nice_length, max_chain, func) {
+
+      this.good_length = good_length;
+      this.max_lazy = max_lazy;
+      this.nice_length = nice_length;
+      this.max_chain = max_chain;
+      this.func = func;
+    }
+
+    const configuration_table = [
+      /*      good lazy nice chain */
+      new Config(0, 0, 0, 0, deflate_stored),          /* 0 store only */
+      new Config(4, 4, 8, 4, deflate_fast),            /* 1 max speed, no lazy matches */
+      new Config(4, 5, 16, 8, deflate_fast),           /* 2 */
+      new Config(4, 6, 32, 32, deflate_fast),          /* 3 */
+
+      new Config(4, 4, 16, 16, deflate_slow),          /* 4 lazy matches */
+      new Config(8, 16, 32, 32, deflate_slow),         /* 5 */
+      new Config(8, 16, 128, 128, deflate_slow),       /* 6 */
+      new Config(8, 32, 128, 256, deflate_slow),       /* 7 */
+      new Config(32, 128, 258, 1024, deflate_slow),    /* 8 */
+      new Config(32, 258, 258, 4096, deflate_slow)     /* 9 max compression */
+    ];
+
+
+    /* ===========================================================================
+     * Initialize the "longest match" routines for a new zlib stream
+     */
+    const lm_init = (s) => {
+
+      s.window_size = 2 * s.w_size;
+
+      /*** CLEAR_HASH(s); ***/
+      zero(s.head); // Fill with NIL (= 0);
+
+      /* Set the default configuration parameters:
+       */
+      s.max_lazy_match = configuration_table[s.level].max_lazy;
+      s.good_match = configuration_table[s.level].good_length;
+      s.nice_match = configuration_table[s.level].nice_length;
+      s.max_chain_length = configuration_table[s.level].max_chain;
+
+      s.strstart = 0;
+      s.block_start = 0;
+      s.lookahead = 0;
+      s.insert = 0;
+      s.match_length = s.prev_length = MIN_MATCH - 1;
+      s.match_available = 0;
+      s.ins_h = 0;
+    };
+
+
+    function DeflateState() {
+      this.strm = null;            /* pointer back to this zlib stream */
+      this.status = 0;            /* as the name implies */
+      this.pending_buf = null;      /* output still pending */
+      this.pending_buf_size = 0;  /* size of pending_buf */
+      this.pending_out = 0;       /* next pending byte to output to the stream */
+      this.pending = 0;           /* nb of bytes in the pending buffer */
+      this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */
+      this.gzhead = null;         /* gzip header information to write */
+      this.gzindex = 0;           /* where in extra, name, or comment */
+      this.method = Z_DEFLATED$2; /* can only be DEFLATED */
+      this.last_flush = -1;   /* value of flush param for previous deflate call */
+
+      this.w_size = 0;  /* LZ77 window size (32K by default) */
+      this.w_bits = 0;  /* log2(w_size)  (8..16) */
+      this.w_mask = 0;  /* w_size - 1 */
+
+      this.window = null;
+      /* Sliding window. Input bytes are read into the second half of the window,
+       * and move to the first half later to keep a dictionary of at least wSize
+       * bytes. With this organization, matches are limited to a distance of
+       * wSize-MAX_MATCH bytes, but this ensures that IO is always
+       * performed with a length multiple of the block size.
+       */
+
+      this.window_size = 0;
+      /* Actual size of window: 2*wSize, except when the user input buffer
+       * is directly used as sliding window.
+       */
+
+      this.prev = null;
+      /* Link to older string with same hash index. To limit the size of this
+       * array to 64K, this link is maintained only for the last 32K strings.
+       * An index in this array is thus a window index modulo 32K.
+       */
+
+      this.head = null;   /* Heads of the hash chains or NIL. */
+
+      this.ins_h = 0;       /* hash index of string to be inserted */
+      this.hash_size = 0;   /* number of elements in hash table */
+      this.hash_bits = 0;   /* log2(hash_size) */
+      this.hash_mask = 0;   /* hash_size-1 */
+
+      this.hash_shift = 0;
+      /* Number of bits by which ins_h must be shifted at each input
+       * step. It must be such that after MIN_MATCH steps, the oldest
+       * byte no longer takes part in the hash key, that is:
+       *   hash_shift * MIN_MATCH >= hash_bits
+       */
+
+      this.block_start = 0;
+      /* Window position at the beginning of the current output block. Gets
+       * negative when the window is moved backwards.
+       */
+
+      this.match_length = 0;      /* length of best match */
+      this.prev_match = 0;        /* previous match */
+      this.match_available = 0;   /* set if previous match exists */
+      this.strstart = 0;          /* start of string to insert */
+      this.match_start = 0;       /* start of matching string */
+      this.lookahead = 0;         /* number of valid bytes ahead in window */
+
+      this.prev_length = 0;
+      /* Length of the best match at previous step. Matches not greater than this
+       * are discarded. This is used in the lazy match evaluation.
+       */
+
+      this.max_chain_length = 0;
+      /* To speed up deflation, hash chains are never searched beyond this
+       * length.  A higher limit improves compression ratio but degrades the
+       * speed.
+       */
+
+      this.max_lazy_match = 0;
+      /* Attempt to find a better match only when the current match is strictly
+       * smaller than this value. This mechanism is used only for compression
+       * levels >= 4.
+       */
+      // That's alias to max_lazy_match, don't use directly
+      //this.max_insert_length = 0;
+      /* Insert new strings in the hash table only if the match length is not
+       * greater than this length. This saves time but degrades compression.
+       * max_insert_length is used only for compression levels <= 3.
+       */
+
+      this.level = 0;     /* compression level (1..9) */
+      this.strategy = 0;  /* favor or force Huffman coding*/
+
+      this.good_match = 0;
+      /* Use a faster search when the previous match is longer than this */
+
+      this.nice_match = 0; /* Stop searching when current match exceeds this */
+
+                  /* used by trees.c: */
+
+      /* Didn't use ct_data typedef below to suppress compiler warning */
+
+      // struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */
+      // struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
+      // struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */
+
+      // Use flat array of DOUBLE size, with interleaved fata,
+      // because JS does not support effective
+      this.dyn_ltree  = new Uint16Array(HEAP_SIZE * 2);
+      this.dyn_dtree  = new Uint16Array((2 * D_CODES + 1) * 2);
+      this.bl_tree    = new Uint16Array((2 * BL_CODES + 1) * 2);
+      zero(this.dyn_ltree);
+      zero(this.dyn_dtree);
+      zero(this.bl_tree);
+
+      this.l_desc   = null;         /* desc. for literal tree */
+      this.d_desc   = null;         /* desc. for distance tree */
+      this.bl_desc  = null;         /* desc. for bit length tree */
+
+      //ush bl_count[MAX_BITS+1];
+      this.bl_count = new Uint16Array(MAX_BITS + 1);
+      /* number of codes at each bit length for an optimal tree */
+
+      //int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */
+      this.heap = new Uint16Array(2 * L_CODES + 1);  /* heap used to build the Huffman trees */
+      zero(this.heap);
+
+      this.heap_len = 0;               /* number of elements in the heap */
+      this.heap_max = 0;               /* element of largest frequency */
+      /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
+       * The same heap array is used to build all trees.
+       */
+
+      this.depth = new Uint16Array(2 * L_CODES + 1); //uch depth[2*L_CODES+1];
+      zero(this.depth);
+      /* Depth of each subtree used as tie breaker for trees of equal frequency
+       */
+
+      this.sym_buf = 0;        /* buffer for distances and literals/lengths */
+
+      this.lit_bufsize = 0;
+      /* Size of match buffer for literals/lengths.  There are 4 reasons for
+       * limiting lit_bufsize to 64K:
+       *   - frequencies can be kept in 16 bit counters
+       *   - if compression is not successful for the first block, all input
+       *     data is still in the window so we can still emit a stored block even
+       *     when input comes from standard input.  (This can also be done for
+       *     all blocks if lit_bufsize is not greater than 32K.)
+       *   - if compression is not successful for a file smaller than 64K, we can
+       *     even emit a stored file instead of a stored block (saving 5 bytes).
+       *     This is applicable only for zip (not gzip or zlib).
+       *   - creating new Huffman trees less frequently may not provide fast
+       *     adaptation to changes in the input data statistics. (Take for
+       *     example a binary file with poorly compressible code followed by
+       *     a highly compressible string table.) Smaller buffer sizes give
+       *     fast adaptation but have of course the overhead of transmitting
+       *     trees more frequently.
+       *   - I can't count above 4
+       */
+
+      this.sym_next = 0;      /* running index in sym_buf */
+      this.sym_end = 0;       /* symbol table full when sym_next reaches this */
+
+      this.opt_len = 0;       /* bit length of current block with optimal trees */
+      this.static_len = 0;    /* bit length of current block with static trees */
+      this.matches = 0;       /* number of string matches in current block */
+      this.insert = 0;        /* bytes at end of window left to insert */
+
+
+      this.bi_buf = 0;
+      /* Output buffer. bits are inserted starting at the bottom (least
+       * significant bits).
+       */
+      this.bi_valid = 0;
+      /* Number of valid bits in bi_buf.  All bits above the last valid bit
+       * are always zero.
+       */
+
+      // Used for window memory init. We safely ignore it for JS. That makes
+      // sense only for pointers and memory check tools.
+      //this.high_water = 0;
+      /* High water mark offset in window for initialized bytes -- bytes above
+       * this are set to zero in order to avoid memory check warnings when
+       * longest match routines access bytes past the input.  This is then
+       * updated to the new high water mark.
+       */
+    }
+
+
+    /* =========================================================================
+     * Check for a valid deflate stream state. Return 0 if ok, 1 if not.
+     */
+    const deflateStateCheck = (strm) => {
+
+      if (!strm) {
+        return 1;
+      }
+      const s = strm.state;
+      if (!s || s.strm !== strm || (s.status !== INIT_STATE &&
+    //#ifdef GZIP
+                                    s.status !== GZIP_STATE &&
+    //#endif
+                                    s.status !== EXTRA_STATE &&
+                                    s.status !== NAME_STATE &&
+                                    s.status !== COMMENT_STATE &&
+                                    s.status !== HCRC_STATE &&
+                                    s.status !== BUSY_STATE &&
+                                    s.status !== FINISH_STATE)) {
+        return 1;
+      }
+      return 0;
+    };
+
+
+    const deflateResetKeep = (strm) => {
+
+      if (deflateStateCheck(strm)) {
+        return err(strm, Z_STREAM_ERROR$2);
+      }
+
+      strm.total_in = strm.total_out = 0;
+      strm.data_type = Z_UNKNOWN;
+
+      const s = strm.state;
+      s.pending = 0;
+      s.pending_out = 0;
+
+      if (s.wrap < 0) {
+        s.wrap = -s.wrap;
+        /* was made negative by deflate(..., Z_FINISH); */
+      }
+      s.status =
+    //#ifdef GZIP
+        s.wrap === 2 ? GZIP_STATE :
+    //#endif
+        s.wrap ? INIT_STATE : BUSY_STATE;
+      strm.adler = (s.wrap === 2) ?
+        0  // crc32(0, Z_NULL, 0)
+      :
+        1; // adler32(0, Z_NULL, 0)
+      s.last_flush = -2;
+      _tr_init(s);
+      return Z_OK$3;
+    };
+
+
+    const deflateReset = (strm) => {
+
+      const ret = deflateResetKeep(strm);
+      if (ret === Z_OK$3) {
+        lm_init(strm.state);
+      }
+      return ret;
+    };
+
+
+    const deflateSetHeader = (strm, head) => {
+
+      if (deflateStateCheck(strm) || strm.state.wrap !== 2) {
+        return Z_STREAM_ERROR$2;
+      }
+      strm.state.gzhead = head;
+      return Z_OK$3;
+    };
+
+
+    const deflateInit2 = (strm, level, method, windowBits, memLevel, strategy) => {
+
+      if (!strm) { // === Z_NULL
+        return Z_STREAM_ERROR$2;
+      }
+      let wrap = 1;
+
+      if (level === Z_DEFAULT_COMPRESSION$1) {
+        level = 6;
+      }
+
+      if (windowBits < 0) { /* suppress zlib wrapper */
+        wrap = 0;
+        windowBits = -windowBits;
+      }
+
+      else if (windowBits > 15) {
+        wrap = 2;           /* write gzip wrapper instead */
+        windowBits -= 16;
+      }
+
+
+      if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method !== Z_DEFLATED$2 ||
+        windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||
+        strategy < 0 || strategy > Z_FIXED || (windowBits === 8 && wrap !== 1)) {
+        return err(strm, Z_STREAM_ERROR$2);
+      }
+
+
+      if (windowBits === 8) {
+        windowBits = 9;
+      }
+      /* until 256-byte window bug fixed */
+
+      const s = new DeflateState();
+
+      strm.state = s;
+      s.strm = strm;
+      s.status = INIT_STATE;     /* to pass state test in deflateReset() */
+
+      s.wrap = wrap;
+      s.gzhead = null;
+      s.w_bits = windowBits;
+      s.w_size = 1 << s.w_bits;
+      s.w_mask = s.w_size - 1;
+
+      s.hash_bits = memLevel + 7;
+      s.hash_size = 1 << s.hash_bits;
+      s.hash_mask = s.hash_size - 1;
+      s.hash_shift = ~~((s.hash_bits + MIN_MATCH - 1) / MIN_MATCH);
+
+      s.window = new Uint8Array(s.w_size * 2);
+      s.head = new Uint16Array(s.hash_size);
+      s.prev = new Uint16Array(s.w_size);
+
+      // Don't need mem init magic for JS.
+      //s.high_water = 0;  /* nothing written to s->window yet */
+
+      s.lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */
+
+      /* We overlay pending_buf and sym_buf. This works since the average size
+       * for length/distance pairs over any compressed block is assured to be 31
+       * bits or less.
+       *
+       * Analysis: The longest fixed codes are a length code of 8 bits plus 5
+       * extra bits, for lengths 131 to 257. The longest fixed distance codes are
+       * 5 bits plus 13 extra bits, for distances 16385 to 32768. The longest
+       * possible fixed-codes length/distance pair is then 31 bits total.
+       *
+       * sym_buf starts one-fourth of the way into pending_buf. So there are
+       * three bytes in sym_buf for every four bytes in pending_buf. Each symbol
+       * in sym_buf is three bytes -- two for the distance and one for the
+       * literal/length. As each symbol is consumed, the pointer to the next
+       * sym_buf value to read moves forward three bytes. From that symbol, up to
+       * 31 bits are written to pending_buf. The closest the written pending_buf
+       * bits gets to the next sym_buf symbol to read is just before the last
+       * code is written. At that time, 31*(n-2) bits have been written, just
+       * after 24*(n-2) bits have been consumed from sym_buf. sym_buf starts at
+       * 8*n bits into pending_buf. (Note that the symbol buffer fills when n-1
+       * symbols are written.) The closest the writing gets to what is unread is
+       * then n+14 bits. Here n is lit_bufsize, which is 16384 by default, and
+       * can range from 128 to 32768.
+       *
+       * Therefore, at a minimum, there are 142 bits of space between what is
+       * written and what is read in the overlain buffers, so the symbols cannot
+       * be overwritten by the compressed data. That space is actually 139 bits,
+       * due to the three-bit fixed-code block header.
+       *
+       * That covers the case where either Z_FIXED is specified, forcing fixed
+       * codes, or when the use of fixed codes is chosen, because that choice
+       * results in a smaller compressed block than dynamic codes. That latter
+       * condition then assures that the above analysis also covers all dynamic
+       * blocks. A dynamic-code block will only be chosen to be emitted if it has
+       * fewer bits than a fixed-code block would for the same set of symbols.
+       * Therefore its average symbol length is assured to be less than 31. So
+       * the compressed data for a dynamic block also cannot overwrite the
+       * symbols from which it is being constructed.
+       */
+
+      s.pending_buf_size = s.lit_bufsize * 4;
+      s.pending_buf = new Uint8Array(s.pending_buf_size);
+
+      // It is offset from `s.pending_buf` (size is `s.lit_bufsize * 2`)
+      //s->sym_buf = s->pending_buf + s->lit_bufsize;
+      s.sym_buf = s.lit_bufsize;
+
+      //s->sym_end = (s->lit_bufsize - 1) * 3;
+      s.sym_end = (s.lit_bufsize - 1) * 3;
+      /* We avoid equality with lit_bufsize*3 because of wraparound at 64K
+       * on 16 bit machines and because stored blocks are restricted to
+       * 64K-1 bytes.
+       */
+
+      s.level = level;
+      s.strategy = strategy;
+      s.method = method;
+
+      return deflateReset(strm);
+    };
+
+    const deflateInit = (strm, level) => {
+
+      return deflateInit2(strm, level, Z_DEFLATED$2, MAX_WBITS$1, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY$1);
+    };
+
+
+    /* ========================================================================= */
+    const deflate$2 = (strm, flush) => {
+
+      if (deflateStateCheck(strm) || flush > Z_BLOCK$1 || flush < 0) {
+        return strm ? err(strm, Z_STREAM_ERROR$2) : Z_STREAM_ERROR$2;
+      }
+
+      const s = strm.state;
+
+      if (!strm.output ||
+          (strm.avail_in !== 0 && !strm.input) ||
+          (s.status === FINISH_STATE && flush !== Z_FINISH$3)) {
+        return err(strm, (strm.avail_out === 0) ? Z_BUF_ERROR$1 : Z_STREAM_ERROR$2);
+      }
+
+      const old_flush = s.last_flush;
+      s.last_flush = flush;
+
+      /* Flush as much pending output as possible */
+      if (s.pending !== 0) {
+        flush_pending(strm);
+        if (strm.avail_out === 0) {
+          /* Since avail_out is 0, deflate will be called again with
+           * more output space, but possibly with both pending and
+           * avail_in equal to zero. There won't be anything to do,
+           * but this is not an error situation so make sure we
+           * return OK instead of BUF_ERROR at next call of deflate:
+           */
+          s.last_flush = -1;
+          return Z_OK$3;
+        }
+
+        /* Make sure there is something to do and avoid duplicate consecutive
+         * flushes. For repeated and useless calls with Z_FINISH, we keep
+         * returning Z_STREAM_END instead of Z_BUF_ERROR.
+         */
+      } else if (strm.avail_in === 0 && rank(flush) <= rank(old_flush) &&
+        flush !== Z_FINISH$3) {
+        return err(strm, Z_BUF_ERROR$1);
+      }
+
+      /* User must not provide more input after the first FINISH: */
+      if (s.status === FINISH_STATE && strm.avail_in !== 0) {
+        return err(strm, Z_BUF_ERROR$1);
+      }
+
+      /* Write the header */
+      if (s.status === INIT_STATE && s.wrap === 0) {
+        s.status = BUSY_STATE;
+      }
+      if (s.status === INIT_STATE) {
+        /* zlib header */
+        let header = (Z_DEFLATED$2 + ((s.w_bits - 8) << 4)) << 8;
+        let level_flags = -1;
+
+        if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) {
+          level_flags = 0;
+        } else if (s.level < 6) {
+          level_flags = 1;
+        } else if (s.level === 6) {
+          level_flags = 2;
+        } else {
+          level_flags = 3;
+        }
+        header |= (level_flags << 6);
+        if (s.strstart !== 0) { header |= PRESET_DICT; }
+        header += 31 - (header % 31);
+
+        putShortMSB(s, header);
+
+        /* Save the adler32 of the preset dictionary: */
+        if (s.strstart !== 0) {
+          putShortMSB(s, strm.adler >>> 16);
+          putShortMSB(s, strm.adler & 0xffff);
+        }
+        strm.adler = 1; // adler32(0L, Z_NULL, 0);
+        s.status = BUSY_STATE;
+
+        /* Compression must start with an empty pending buffer */
+        flush_pending(strm);
+        if (s.pending !== 0) {
+          s.last_flush = -1;
+          return Z_OK$3;
+        }
+      }
+    //#ifdef GZIP
+      if (s.status === GZIP_STATE) {
+        /* gzip header */
+        strm.adler = 0;  //crc32(0L, Z_NULL, 0);
+        put_byte(s, 31);
+        put_byte(s, 139);
+        put_byte(s, 8);
+        if (!s.gzhead) { // s->gzhead == Z_NULL
+          put_byte(s, 0);
+          put_byte(s, 0);
+          put_byte(s, 0);
+          put_byte(s, 0);
+          put_byte(s, 0);
+          put_byte(s, s.level === 9 ? 2 :
+                      (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
+                       4 : 0));
+          put_byte(s, OS_CODE);
+          s.status = BUSY_STATE;
+
+          /* Compression must start with an empty pending buffer */
+          flush_pending(strm);
+          if (s.pending !== 0) {
+            s.last_flush = -1;
+            return Z_OK$3;
+          }
+        }
+        else {
+          put_byte(s, (s.gzhead.text ? 1 : 0) +
+                      (s.gzhead.hcrc ? 2 : 0) +
+                      (!s.gzhead.extra ? 0 : 4) +
+                      (!s.gzhead.name ? 0 : 8) +
+                      (!s.gzhead.comment ? 0 : 16)
+          );
+          put_byte(s, s.gzhead.time & 0xff);
+          put_byte(s, (s.gzhead.time >> 8) & 0xff);
+          put_byte(s, (s.gzhead.time >> 16) & 0xff);
+          put_byte(s, (s.gzhead.time >> 24) & 0xff);
+          put_byte(s, s.level === 9 ? 2 :
+                      (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?
+                       4 : 0));
+          put_byte(s, s.gzhead.os & 0xff);
+          if (s.gzhead.extra && s.gzhead.extra.length) {
+            put_byte(s, s.gzhead.extra.length & 0xff);
+            put_byte(s, (s.gzhead.extra.length >> 8) & 0xff);
+          }
+          if (s.gzhead.hcrc) {
+            strm.adler = crc32_1$1(strm.adler, s.pending_buf, s.pending, 0);
+          }
+          s.gzindex = 0;
+          s.status = EXTRA_STATE;
+        }
+      }
+      if (s.status === EXTRA_STATE) {
+        if (s.gzhead.extra/* != Z_NULL*/) {
+          let beg = s.pending;   /* start of bytes to update crc */
+          let left = (s.gzhead.extra.length & 0xffff) - s.gzindex;
+          while (s.pending + left > s.pending_buf_size) {
+            let copy = s.pending_buf_size - s.pending;
+            // zmemcpy(s.pending_buf + s.pending,
+            //    s.gzhead.extra + s.gzindex, copy);
+            s.pending_buf.set(s.gzhead.extra.subarray(s.gzindex, s.gzindex + copy), s.pending);
+            s.pending = s.pending_buf_size;
+            //--- HCRC_UPDATE(beg) ---//
+            if (s.gzhead.hcrc && s.pending > beg) {
+              strm.adler = crc32_1$1(strm.adler, s.pending_buf, s.pending - beg, beg);
+            }
+            //---//
+            s.gzindex += copy;
+            flush_pending(strm);
+            if (s.pending !== 0) {
+              s.last_flush = -1;
+              return Z_OK$3;
+            }
+            beg = 0;
+            left -= copy;
+          }
+          // JS specific: s.gzhead.extra may be TypedArray or Array for backward compatibility
+          //              TypedArray.slice and TypedArray.from don't exist in IE10-IE11
+          let gzhead_extra = new Uint8Array(s.gzhead.extra);
+          // zmemcpy(s->pending_buf + s->pending,
+          //     s->gzhead->extra + s->gzindex, left);
+          s.pending_buf.set(gzhead_extra.subarray(s.gzindex, s.gzindex + left), s.pending);
+          s.pending += left;
+          //--- HCRC_UPDATE(beg) ---//
+          if (s.gzhead.hcrc && s.pending > beg) {
+            strm.adler = crc32_1$1(strm.adler, s.pending_buf, s.pending - beg, beg);
+          }
+          //---//
+          s.gzindex = 0;
+        }
+        s.status = NAME_STATE;
+      }
+      if (s.status === NAME_STATE) {
+        if (s.gzhead.name/* != Z_NULL*/) {
+          let beg = s.pending;   /* start of bytes to update crc */
+          let val;
+          do {
+            if (s.pending === s.pending_buf_size) {
+              //--- HCRC_UPDATE(beg) ---//
+              if (s.gzhead.hcrc && s.pending > beg) {
+                strm.adler = crc32_1$1(strm.adler, s.pending_buf, s.pending - beg, beg);
+              }
+              //---//
+              flush_pending(strm);
+              if (s.pending !== 0) {
+                s.last_flush = -1;
+                return Z_OK$3;
+              }
+              beg = 0;
+            }
+            // JS specific: little magic to add zero terminator to end of string
+            if (s.gzindex < s.gzhead.name.length) {
+              val = s.gzhead.name.charCodeAt(s.gzindex++) & 0xff;
+            } else {
+              val = 0;
+            }
+            put_byte(s, val);
+          } while (val !== 0);
+          //--- HCRC_UPDATE(beg) ---//
+          if (s.gzhead.hcrc && s.pending > beg) {
+            strm.adler = crc32_1$1(strm.adler, s.pending_buf, s.pending - beg, beg);
+          }
+          //---//
+          s.gzindex = 0;
+        }
+        s.status = COMMENT_STATE;
+      }
+      if (s.status === COMMENT_STATE) {
+        if (s.gzhead.comment/* != Z_NULL*/) {
+          let beg = s.pending;   /* start of bytes to update crc */
+          let val;
+          do {
+            if (s.pending === s.pending_buf_size) {
+              //--- HCRC_UPDATE(beg) ---//
+              if (s.gzhead.hcrc && s.pending > beg) {
+                strm.adler = crc32_1$1(strm.adler, s.pending_buf, s.pending - beg, beg);
+              }
+              //---//
+              flush_pending(strm);
+              if (s.pending !== 0) {
+                s.last_flush = -1;
+                return Z_OK$3;
+              }
+              beg = 0;
+            }
+            // JS specific: little magic to add zero terminator to end of string
+            if (s.gzindex < s.gzhead.comment.length) {
+              val = s.gzhead.comment.charCodeAt(s.gzindex++) & 0xff;
+            } else {
+              val = 0;
+            }
+            put_byte(s, val);
+          } while (val !== 0);
+          //--- HCRC_UPDATE(beg) ---//
+          if (s.gzhead.hcrc && s.pending > beg) {
+            strm.adler = crc32_1$1(strm.adler, s.pending_buf, s.pending - beg, beg);
+          }
+          //---//
+        }
+        s.status = HCRC_STATE;
+      }
+      if (s.status === HCRC_STATE) {
+        if (s.gzhead.hcrc) {
+          if (s.pending + 2 > s.pending_buf_size) {
+            flush_pending(strm);
+            if (s.pending !== 0) {
+              s.last_flush = -1;
+              return Z_OK$3;
+            }
+          }
+          put_byte(s, strm.adler & 0xff);
+          put_byte(s, (strm.adler >> 8) & 0xff);
+          strm.adler = 0; //crc32(0L, Z_NULL, 0);
+        }
+        s.status = BUSY_STATE;
+
+        /* Compression must start with an empty pending buffer */
+        flush_pending(strm);
+        if (s.pending !== 0) {
+          s.last_flush = -1;
+          return Z_OK$3;
+        }
+      }
+    //#endif
+
+      /* Start a new block or continue the current one.
+       */
+      if (strm.avail_in !== 0 || s.lookahead !== 0 ||
+        (flush !== Z_NO_FLUSH$2 && s.status !== FINISH_STATE)) {
+        let bstate = s.level === 0 ? deflate_stored(s, flush) :
+                     s.strategy === Z_HUFFMAN_ONLY ? deflate_huff(s, flush) :
+                     s.strategy === Z_RLE ? deflate_rle(s, flush) :
+                     configuration_table[s.level].func(s, flush);
+
+        if (bstate === BS_FINISH_STARTED || bstate === BS_FINISH_DONE) {
+          s.status = FINISH_STATE;
+        }
+        if (bstate === BS_NEED_MORE || bstate === BS_FINISH_STARTED) {
+          if (strm.avail_out === 0) {
+            s.last_flush = -1;
+            /* avoid BUF_ERROR next call, see above */
+          }
+          return Z_OK$3;
+          /* If flush != Z_NO_FLUSH && avail_out == 0, the next call
+           * of deflate should use the same flush parameter to make sure
+           * that the flush is complete. So we don't have to output an
+           * empty block here, this will be done at next call. This also
+           * ensures that for a very small output buffer, we emit at most
+           * one empty block.
+           */
+        }
+        if (bstate === BS_BLOCK_DONE) {
+          if (flush === Z_PARTIAL_FLUSH) {
+            _tr_align(s);
+          }
+          else if (flush !== Z_BLOCK$1) { /* FULL_FLUSH or SYNC_FLUSH */
+
+            _tr_stored_block(s, 0, 0, false);
+            /* For a full flush, this empty block will be recognized
+             * as a special marker by inflate_sync().
+             */
+            if (flush === Z_FULL_FLUSH$1) {
+              /*** CLEAR_HASH(s); ***/             /* forget history */
+              zero(s.head); // Fill with NIL (= 0);
+
+              if (s.lookahead === 0) {
+                s.strstart = 0;
+                s.block_start = 0;
+                s.insert = 0;
+              }
+            }
+          }
+          flush_pending(strm);
+          if (strm.avail_out === 0) {
+            s.last_flush = -1; /* avoid BUF_ERROR at next call, see above */
+            return Z_OK$3;
+          }
+        }
+      }
+
+      if (flush !== Z_FINISH$3) { return Z_OK$3; }
+      if (s.wrap <= 0) { return Z_STREAM_END$3; }
+
+      /* Write the trailer */
+      if (s.wrap === 2) {
+        put_byte(s, strm.adler & 0xff);
+        put_byte(s, (strm.adler >> 8) & 0xff);
+        put_byte(s, (strm.adler >> 16) & 0xff);
+        put_byte(s, (strm.adler >> 24) & 0xff);
+        put_byte(s, strm.total_in & 0xff);
+        put_byte(s, (strm.total_in >> 8) & 0xff);
+        put_byte(s, (strm.total_in >> 16) & 0xff);
+        put_byte(s, (strm.total_in >> 24) & 0xff);
+      }
+      else
+      {
+        putShortMSB(s, strm.adler >>> 16);
+        putShortMSB(s, strm.adler & 0xffff);
+      }
+
+      flush_pending(strm);
+      /* If avail_out is zero, the application will call deflate again
+       * to flush the rest.
+       */
+      if (s.wrap > 0) { s.wrap = -s.wrap; }
+      /* write the trailer only once! */
+      return s.pending !== 0 ? Z_OK$3 : Z_STREAM_END$3;
+    };
+
+
+    const deflateEnd = (strm) => {
+
+      if (deflateStateCheck(strm)) {
+        return Z_STREAM_ERROR$2;
+      }
+
+      const status = strm.state.status;
+
+      strm.state = null;
+
+      return status === BUSY_STATE ? err(strm, Z_DATA_ERROR$2) : Z_OK$3;
+    };
+
+
+    /* =========================================================================
+     * Initializes the compression dictionary from the given byte
+     * sequence without producing any compressed output.
+     */
+    const deflateSetDictionary = (strm, dictionary) => {
+
+      let dictLength = dictionary.length;
+
+      if (deflateStateCheck(strm)) {
+        return Z_STREAM_ERROR$2;
+      }
+
+      const s = strm.state;
+      const wrap = s.wrap;
+
+      if (wrap === 2 || (wrap === 1 && s.status !== INIT_STATE) || s.lookahead) {
+        return Z_STREAM_ERROR$2;
+      }
+
+      /* when using zlib wrappers, compute Adler-32 for provided dictionary */
+      if (wrap === 1) {
+        /* adler32(strm->adler, dictionary, dictLength); */
+        strm.adler = adler32_1$1(strm.adler, dictionary, dictLength, 0);
+      }
+
+      s.wrap = 0;   /* avoid computing Adler-32 in read_buf */
+
+      /* if dictionary would fill window, just replace the history */
+      if (dictLength >= s.w_size) {
+        if (wrap === 0) {            /* already empty otherwise */
+          /*** CLEAR_HASH(s); ***/
+          zero(s.head); // Fill with NIL (= 0);
+          s.strstart = 0;
+          s.block_start = 0;
+          s.insert = 0;
+        }
+        /* use the tail */
+        // dictionary = dictionary.slice(dictLength - s.w_size);
+        let tmpDict = new Uint8Array(s.w_size);
+        tmpDict.set(dictionary.subarray(dictLength - s.w_size, dictLength), 0);
+        dictionary = tmpDict;
+        dictLength = s.w_size;
+      }
+      /* insert dictionary into window and hash */
+      const avail = strm.avail_in;
+      const next = strm.next_in;
+      const input = strm.input;
+      strm.avail_in = dictLength;
+      strm.next_in = 0;
+      strm.input = dictionary;
+      fill_window(s);
+      while (s.lookahead >= MIN_MATCH) {
+        let str = s.strstart;
+        let n = s.lookahead - (MIN_MATCH - 1);
+        do {
+          /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */
+          s.ins_h = HASH(s, s.ins_h, s.window[str + MIN_MATCH - 1]);
+
+          s.prev[str & s.w_mask] = s.head[s.ins_h];
+
+          s.head[s.ins_h] = str;
+          str++;
+        } while (--n);
+        s.strstart = str;
+        s.lookahead = MIN_MATCH - 1;
+        fill_window(s);
+      }
+      s.strstart += s.lookahead;
+      s.block_start = s.strstart;
+      s.insert = s.lookahead;
+      s.lookahead = 0;
+      s.match_length = s.prev_length = MIN_MATCH - 1;
+      s.match_available = 0;
+      strm.next_in = next;
+      strm.input = input;
+      strm.avail_in = avail;
+      s.wrap = wrap;
+      return Z_OK$3;
+    };
+
+
+    var deflateInit_1 = deflateInit;
+    var deflateInit2_1 = deflateInit2;
+    var deflateReset_1 = deflateReset;
+    var deflateResetKeep_1 = deflateResetKeep;
+    var deflateSetHeader_1 = deflateSetHeader;
+    var deflate_2$1 = deflate$2;
+    var deflateEnd_1 = deflateEnd;
+    var deflateSetDictionary_1 = deflateSetDictionary;
+    var deflateInfo = 'pako deflate (from Nodeca project)';
+
+    /* Not implemented
+    module.exports.deflateBound = deflateBound;
+    module.exports.deflateCopy = deflateCopy;
+    module.exports.deflateGetDictionary = deflateGetDictionary;
+    module.exports.deflateParams = deflateParams;
+    module.exports.deflatePending = deflatePending;
+    module.exports.deflatePrime = deflatePrime;
+    module.exports.deflateTune = deflateTune;
+    */
+
+    var deflate_1$2 = {
+    	deflateInit: deflateInit_1,
+    	deflateInit2: deflateInit2_1,
+    	deflateReset: deflateReset_1,
+    	deflateResetKeep: deflateResetKeep_1,
+    	deflateSetHeader: deflateSetHeader_1,
+    	deflate: deflate_2$1,
+    	deflateEnd: deflateEnd_1,
+    	deflateSetDictionary: deflateSetDictionary_1,
+    	deflateInfo: deflateInfo
+    };
+
+    const _has$1 = (obj, key) => {
+      return Object.prototype.hasOwnProperty.call(obj, key);
+    };
+
+    var assign$1 = function (obj /*from1, from2, from3, ...*/) {
+      const sources = Array.prototype.slice.call(arguments, 1);
+      while (sources.length) {
+        const source = sources.shift();
+        if (!source) { continue; }
+
+        if (typeof source !== 'object') {
+          throw new TypeError(source + 'must be non-object');
+        }
+
+        for (const p in source) {
+          if (_has$1(source, p)) {
+            obj[p] = source[p];
+          }
+        }
+      }
+
+      return obj;
+    };
+
+
+    // Join array of chunks to single array.
+    var flattenChunks$1 = (chunks) => {
+      // calculate data length
+      let len = 0;
+
+      for (let i = 0, l = chunks.length; i < l; i++) {
+        len += chunks[i].length;
+      }
+
+      // join chunks
+      const result = new Uint8Array(len);
+
+      for (let i = 0, pos = 0, l = chunks.length; i < l; i++) {
+        let chunk = chunks[i];
+        result.set(chunk, pos);
+        pos += chunk.length;
+      }
+
+      return result;
+    };
+
+    var common$1 = {
+    	assign: assign$1,
+    	flattenChunks: flattenChunks$1
+    };
+
+    // String encode/decode helpers
+
+
+    // Quick check if we can use fast array to bin string conversion
+    //
+    // - apply(Array) can fail on Android 2.2
+    // - apply(Uint8Array) can fail on iOS 5.1 Safari
+    //
+    let STR_APPLY_UIA_OK$1 = true;
+
+    try { String.fromCharCode.apply(null, new Uint8Array(1)); } catch (__) { STR_APPLY_UIA_OK$1 = false; }
+
+
+    // Table with utf8 lengths (calculated by first byte of sequence)
+    // Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS,
+    // because max possible codepoint is 0x10ffff
+    const _utf8len$1 = new Uint8Array(256);
+    for (let q = 0; q < 256; q++) {
+      _utf8len$1[q] = (q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1);
+    }
+    _utf8len$1[254] = _utf8len$1[254] = 1; // Invalid sequence start
+
+
+    // convert string to array (typed, when possible)
+    var string2buf$1 = (str) => {
+      if (typeof TextEncoder === 'function' && TextEncoder.prototype.encode) {
+        return new TextEncoder().encode(str);
+      }
+
+      let buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;
+
+      // count binary size
+      for (m_pos = 0; m_pos < str_len; m_pos++) {
+        c = str.charCodeAt(m_pos);
+        if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) {
+          c2 = str.charCodeAt(m_pos + 1);
+          if ((c2 & 0xfc00) === 0xdc00) {
+            c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
+            m_pos++;
+          }
+        }
+        buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4;
+      }
+
+      // allocate buffer
+      buf = new Uint8Array(buf_len);
+
+      // convert
+      for (i = 0, m_pos = 0; i < buf_len; m_pos++) {
+        c = str.charCodeAt(m_pos);
+        if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) {
+          c2 = str.charCodeAt(m_pos + 1);
+          if ((c2 & 0xfc00) === 0xdc00) {
+            c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);
+            m_pos++;
+          }
+        }
+        if (c < 0x80) {
+          /* one byte */
+          buf[i++] = c;
+        } else if (c < 0x800) {
+          /* two bytes */
+          buf[i++] = 0xC0 | (c >>> 6);
+          buf[i++] = 0x80 | (c & 0x3f);
+        } else if (c < 0x10000) {
+          /* three bytes */
+          buf[i++] = 0xE0 | (c >>> 12);
+          buf[i++] = 0x80 | (c >>> 6 & 0x3f);
+          buf[i++] = 0x80 | (c & 0x3f);
+        } else {
+          /* four bytes */
+          buf[i++] = 0xf0 | (c >>> 18);
+          buf[i++] = 0x80 | (c >>> 12 & 0x3f);
+          buf[i++] = 0x80 | (c >>> 6 & 0x3f);
+          buf[i++] = 0x80 | (c & 0x3f);
+        }
+      }
+
+      return buf;
+    };
+
+    // Helper
+    const buf2binstring$1 = (buf, len) => {
+      // On Chrome, the arguments in a function call that are allowed is `65534`.
+      // If the length of the buffer is smaller than that, we can use this optimization,
+      // otherwise we will take a slower path.
+      if (len < 65534) {
+        if (buf.subarray && STR_APPLY_UIA_OK$1) {
+          return String.fromCharCode.apply(null, buf.length === len ? buf : buf.subarray(0, len));
+        }
+      }
+
+      let result = '';
+      for (let i = 0; i < len; i++) {
+        result += String.fromCharCode(buf[i]);
+      }
+      return result;
+    };
+
+
+    // convert array to string
+    var buf2string$1 = (buf, max) => {
+      const len = max || buf.length;
+
+      if (typeof TextDecoder === 'function' && TextDecoder.prototype.decode) {
+        return new TextDecoder().decode(buf.subarray(0, max));
+      }
+
+      let i, out;
+
+      // Reserve max possible length (2 words per char)
+      // NB: by unknown reasons, Array is significantly faster for
+      //     String.fromCharCode.apply than Uint16Array.
+      const utf16buf = new Array(len * 2);
+
+      for (out = 0, i = 0; i < len;) {
+        let c = buf[i++];
+        // quick process ascii
+        if (c < 0x80) { utf16buf[out++] = c; continue; }
+
+        let c_len = _utf8len$1[c];
+        // skip 5 & 6 byte codes
+        if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len - 1; continue; }
+
+        // apply mask on first byte
+        c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07;
+        // join the rest
+        while (c_len > 1 && i < len) {
+          c = (c << 6) | (buf[i++] & 0x3f);
+          c_len--;
+        }
+
+        // terminated by end of string?
+        if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; }
+
+        if (c < 0x10000) {
+          utf16buf[out++] = c;
+        } else {
+          c -= 0x10000;
+          utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff);
+          utf16buf[out++] = 0xdc00 | (c & 0x3ff);
+        }
+      }
+
+      return buf2binstring$1(utf16buf, out);
+    };
+
+
+    // Calculate max possible position in utf8 buffer,
+    // that will not break sequence. If that's not possible
+    // - (very small limits) return max size as is.
+    //
+    // buf[] - utf8 bytes array
+    // max   - length limit (mandatory);
+    var utf8border$1 = (buf, max) => {
+
+      max = max || buf.length;
+      if (max > buf.length) { max = buf.length; }
+
+      // go back from last position, until start of sequence found
+      let pos = max - 1;
+      while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; }
+
+      // Very small and broken sequence,
+      // return max, because we should return something anyway.
+      if (pos < 0) { return max; }
+
+      // If we came to start of buffer - that means buffer is too small,
+      // return max too.
+      if (pos === 0) { return max; }
+
+      return (pos + _utf8len$1[buf[pos]] > max) ? pos : max;
+    };
+
+    var strings$1 = {
+    	string2buf: string2buf$1,
+    	buf2string: buf2string$1,
+    	utf8border: utf8border$1
+    };
+
+    // (C) 1995-2013 Jean-loup Gailly and Mark Adler
+    // (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+    //
+    // This software is provided 'as-is', without any express or implied
+    // warranty. In no event will the authors be held liable for any damages
+    // arising from the use of this software.
+    //
+    // Permission is granted to anyone to use this software for any purpose,
+    // including commercial applications, and to alter it and redistribute it
+    // freely, subject to the following restrictions:
+    //
+    // 1. The origin of this software must not be misrepresented; you must not
+    //   claim that you wrote the original software. If you use this software
+    //   in a product, an acknowledgment in the product documentation would be
+    //   appreciated but is not required.
+    // 2. Altered source versions must be plainly marked as such, and must not be
+    //   misrepresented as being the original software.
+    // 3. This notice may not be removed or altered from any source distribution.
+
+    function ZStream$1() {
+      /* next input byte */
+      this.input = null; // JS specific, because we have no pointers
+      this.next_in = 0;
+      /* number of bytes available at input */
+      this.avail_in = 0;
+      /* total number of input bytes read so far */
+      this.total_in = 0;
+      /* next output byte should be put there */
+      this.output = null; // JS specific, because we have no pointers
+      this.next_out = 0;
+      /* remaining free space at output */
+      this.avail_out = 0;
+      /* total number of bytes output so far */
+      this.total_out = 0;
+      /* last error message, NULL if no error */
+      this.msg = ''/*Z_NULL*/;
+      /* not visible by applications */
+      this.state = null;
+      /* best guess about the data type: binary or text */
+      this.data_type = 2/*Z_UNKNOWN*/;
+      /* adler32 value of the uncompressed data */
+      this.adler = 0;
+    }
+
+    var zstream$1 = ZStream$1;
+
+    const toString$1 = Object.prototype.toString;
+
+    /* Public constants ==========================================================*/
+    /* ===========================================================================*/
+
+    const {
+      Z_NO_FLUSH: Z_NO_FLUSH$1, Z_SYNC_FLUSH, Z_FULL_FLUSH, Z_FINISH: Z_FINISH$2,
+      Z_OK: Z_OK$2, Z_STREAM_END: Z_STREAM_END$2,
+      Z_DEFAULT_COMPRESSION,
+      Z_DEFAULT_STRATEGY,
+      Z_DEFLATED: Z_DEFLATED$1
+    } = constants$2$1;
+
+    /* ===========================================================================*/
+
+
+    /**
+     * class Deflate
+     *
+     * Generic JS-style wrapper for zlib calls. If you don't need
+     * streaming behaviour - use more simple functions: [[deflate]],
+     * [[deflateRaw]] and [[gzip]].
+     **/
+
+    /* internal
+     * Deflate.chunks -> Array
+     *
+     * Chunks of output data, if [[Deflate#onData]] not overridden.
+     **/
+
+    /**
+     * Deflate.result -> Uint8Array
+     *
+     * Compressed result, generated by default [[Deflate#onData]]
+     * and [[Deflate#onEnd]] handlers. Filled after you push last chunk
+     * (call [[Deflate#push]] with `Z_FINISH` / `true` param).
+     **/
+
+    /**
+     * Deflate.err -> Number
+     *
+     * Error code after deflate finished. 0 (Z_OK) on success.
+     * You will not need it in real life, because deflate errors
+     * are possible only on wrong options or bad `onData` / `onEnd`
+     * custom handlers.
+     **/
+
+    /**
+     * Deflate.msg -> String
+     *
+     * Error message, if [[Deflate.err]] != 0
+     **/
+
+
+    /**
+     * new Deflate(options)
+     * - options (Object): zlib deflate options.
+     *
+     * Creates new deflator instance with specified params. Throws exception
+     * on bad params. Supported options:
+     *
+     * - `level`
+     * - `windowBits`
+     * - `memLevel`
+     * - `strategy`
+     * - `dictionary`
+     *
+     * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
+     * for more information on these.
+     *
+     * Additional options, for internal needs:
+     *
+     * - `chunkSize` - size of generated data chunks (16K by default)
+     * - `raw` (Boolean) - do raw deflate
+     * - `gzip` (Boolean) - create gzip wrapper
+     * - `header` (Object) - custom header for gzip
+     *   - `text` (Boolean) - true if compressed data believed to be text
+     *   - `time` (Number) - modification time, unix timestamp
+     *   - `os` (Number) - operation system code
+     *   - `extra` (Array) - array of bytes with extra data (max 65536)
+     *   - `name` (String) - file name (binary string)
+     *   - `comment` (String) - comment (binary string)
+     *   - `hcrc` (Boolean) - true if header crc should be added
+     *
+     * ##### Example:
+     *
+     * ```javascript
+     * const pako = require('pako')
+     *   , chunk1 = new Uint8Array([1,2,3,4,5,6,7,8,9])
+     *   , chunk2 = new Uint8Array([10,11,12,13,14,15,16,17,18,19]);
+     *
+     * const deflate = new pako.Deflate({ level: 3});
+     *
+     * deflate.push(chunk1, false);
+     * deflate.push(chunk2, true);  // true -> last chunk
+     *
+     * if (deflate.err) { throw new Error(deflate.err); }
+     *
+     * console.log(deflate.result);
+     * ```
+     **/
+    function Deflate$1(options) {
+      this.options = common$1.assign({
+        level: Z_DEFAULT_COMPRESSION,
+        method: Z_DEFLATED$1,
+        chunkSize: 16384,
+        windowBits: 15,
+        memLevel: 8,
+        strategy: Z_DEFAULT_STRATEGY
+      }, options || {});
+
+      let opt = this.options;
+
+      if (opt.raw && (opt.windowBits > 0)) {
+        opt.windowBits = -opt.windowBits;
+      }
+
+      else if (opt.gzip && (opt.windowBits > 0) && (opt.windowBits < 16)) {
+        opt.windowBits += 16;
+      }
+
+      this.err    = 0;      // error code, if happens (0 = Z_OK)
+      this.msg    = '';     // error message
+      this.ended  = false;  // used to avoid multiple onEnd() calls
+      this.chunks = [];     // chunks of compressed data
+
+      this.strm = new zstream$1();
+      this.strm.avail_out = 0;
+
+      let status = deflate_1$2.deflateInit2(
+        this.strm,
+        opt.level,
+        opt.method,
+        opt.windowBits,
+        opt.memLevel,
+        opt.strategy
+      );
+
+      if (status !== Z_OK$2) {
+        throw new Error(messages$1[status]);
+      }
+
+      if (opt.header) {
+        deflate_1$2.deflateSetHeader(this.strm, opt.header);
+      }
+
+      if (opt.dictionary) {
+        let dict;
+        // Convert data if needed
+        if (typeof opt.dictionary === 'string') {
+          // If we need to compress text, change encoding to utf8.
+          dict = strings$1.string2buf(opt.dictionary);
+        } else if (toString$1.call(opt.dictionary) === '[object ArrayBuffer]') {
+          dict = new Uint8Array(opt.dictionary);
+        } else {
+          dict = opt.dictionary;
+        }
+
+        status = deflate_1$2.deflateSetDictionary(this.strm, dict);
+
+        if (status !== Z_OK$2) {
+          throw new Error(messages$1[status]);
+        }
+
+        this._dict_set = true;
+      }
+    }
+
+    /**
+     * Deflate#push(data[, flush_mode]) -> Boolean
+     * - data (Uint8Array|ArrayBuffer|String): input data. Strings will be
+     *   converted to utf8 byte sequence.
+     * - flush_mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.
+     *   See constants. Skipped or `false` means Z_NO_FLUSH, `true` means Z_FINISH.
+     *
+     * Sends input data to deflate pipe, generating [[Deflate#onData]] calls with
+     * new compressed chunks. Returns `true` on success. The last data block must
+     * have `flush_mode` Z_FINISH (or `true`). That will flush internal pending
+     * buffers and call [[Deflate#onEnd]].
+     *
+     * On fail call [[Deflate#onEnd]] with error code and return false.
+     *
+     * ##### Example
+     *
+     * ```javascript
+     * push(chunk, false); // push one of data chunks
+     * ...
+     * push(chunk, true);  // push last chunk
+     * ```
+     **/
+    Deflate$1.prototype.push = function (data, flush_mode) {
+      const strm = this.strm;
+      const chunkSize = this.options.chunkSize;
+      let status, _flush_mode;
+
+      if (this.ended) { return false; }
+
+      if (flush_mode === ~~flush_mode) _flush_mode = flush_mode;
+      else _flush_mode = flush_mode === true ? Z_FINISH$2 : Z_NO_FLUSH$1;
+
+      // Convert data if needed
+      if (typeof data === 'string') {
+        // If we need to compress text, change encoding to utf8.
+        strm.input = strings$1.string2buf(data);
+      } else if (toString$1.call(data) === '[object ArrayBuffer]') {
+        strm.input = new Uint8Array(data);
+      } else {
+        strm.input = data;
+      }
+
+      strm.next_in = 0;
+      strm.avail_in = strm.input.length;
+
+      for (;;) {
+        if (strm.avail_out === 0) {
+          strm.output = new Uint8Array(chunkSize);
+          strm.next_out = 0;
+          strm.avail_out = chunkSize;
+        }
+
+        // Make sure avail_out > 6 to avoid repeating markers
+        if ((_flush_mode === Z_SYNC_FLUSH || _flush_mode === Z_FULL_FLUSH) && strm.avail_out <= 6) {
+          this.onData(strm.output.subarray(0, strm.next_out));
+          strm.avail_out = 0;
+          continue;
+        }
+
+        status = deflate_1$2.deflate(strm, _flush_mode);
+
+        // Ended => flush and finish
+        if (status === Z_STREAM_END$2) {
+          if (strm.next_out > 0) {
+            this.onData(strm.output.subarray(0, strm.next_out));
+          }
+          status = deflate_1$2.deflateEnd(this.strm);
+          this.onEnd(status);
+          this.ended = true;
+          return status === Z_OK$2;
+        }
+
+        // Flush if out buffer full
+        if (strm.avail_out === 0) {
+          this.onData(strm.output);
+          continue;
+        }
+
+        // Flush if requested and has data
+        if (_flush_mode > 0 && strm.next_out > 0) {
+          this.onData(strm.output.subarray(0, strm.next_out));
+          strm.avail_out = 0;
+          continue;
+        }
+
+        if (strm.avail_in === 0) break;
+      }
+
+      return true;
+    };
+
+
+    /**
+     * Deflate#onData(chunk) -> Void
+     * - chunk (Uint8Array): output data.
+     *
+     * By default, stores data blocks in `chunks[]` property and glue
+     * those in `onEnd`. Override this handler, if you need another behaviour.
+     **/
+    Deflate$1.prototype.onData = function (chunk) {
+      this.chunks.push(chunk);
+    };
+
+
+    /**
+     * Deflate#onEnd(status) -> Void
+     * - status (Number): deflate status. 0 (Z_OK) on success,
+     *   other if not.
+     *
+     * Called once after you tell deflate that the input stream is
+     * complete (Z_FINISH). By default - join collected chunks,
+     * free memory and fill `results` / `err` properties.
+     **/
+    Deflate$1.prototype.onEnd = function (status) {
+      // On success - join
+      if (status === Z_OK$2) {
+        this.result = common$1.flattenChunks(this.chunks);
+      }
+      this.chunks = [];
+      this.err = status;
+      this.msg = this.strm.msg;
+    };
+
+
+    /**
+     * deflate(data[, options]) -> Uint8Array
+     * - data (Uint8Array|ArrayBuffer|String): input data to compress.
+     * - options (Object): zlib deflate options.
+     *
+     * Compress `data` with deflate algorithm and `options`.
+     *
+     * Supported options are:
+     *
+     * - level
+     * - windowBits
+     * - memLevel
+     * - strategy
+     * - dictionary
+     *
+     * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
+     * for more information on these.
+     *
+     * Sugar (options):
+     *
+     * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify
+     *   negative windowBits implicitly.
+     *
+     * ##### Example:
+     *
+     * ```javascript
+     * const pako = require('pako')
+     * const data = new Uint8Array([1,2,3,4,5,6,7,8,9]);
+     *
+     * console.log(pako.deflate(data));
+     * ```
+     **/
+    function deflate$1(input, options) {
+      const deflator = new Deflate$1(options);
+
+      deflator.push(input, true);
+
+      // That will never happens, if you don't cheat with options :)
+      if (deflator.err) { throw deflator.msg || messages$1[deflator.err]; }
+
+      return deflator.result;
+    }
+
+
+    /**
+     * deflateRaw(data[, options]) -> Uint8Array
+     * - data (Uint8Array|ArrayBuffer|String): input data to compress.
+     * - options (Object): zlib deflate options.
+     *
+     * The same as [[deflate]], but creates raw data, without wrapper
+     * (header and adler32 crc).
+     **/
+    function deflateRaw$1(input, options) {
+      options = options || {};
+      options.raw = true;
+      return deflate$1(input, options);
+    }
+
+
+    /**
+     * gzip(data[, options]) -> Uint8Array
+     * - data (Uint8Array|ArrayBuffer|String): input data to compress.
+     * - options (Object): zlib deflate options.
+     *
+     * The same as [[deflate]], but create gzip wrapper instead of
+     * deflate one.
+     **/
+    function gzip$1(input, options) {
+      options = options || {};
+      options.gzip = true;
+      return deflate$1(input, options);
+    }
+
+
+    var Deflate_1$1 = Deflate$1;
+    var deflate_2 = deflate$1;
+    var deflateRaw_1$1 = deflateRaw$1;
+    var gzip_1$1 = gzip$1;
+    var constants$1 = constants$2$1;
+
+    var deflate_1$1 = {
+    	Deflate: Deflate_1$1,
+    	deflate: deflate_2,
+    	deflateRaw: deflateRaw_1$1,
+    	gzip: gzip_1$1,
+    	constants: constants$1
+    };
+
+    // (C) 1995-2013 Jean-loup Gailly and Mark Adler
+    // (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+    //
+    // This software is provided 'as-is', without any express or implied
+    // warranty. In no event will the authors be held liable for any damages
+    // arising from the use of this software.
+    //
+    // Permission is granted to anyone to use this software for any purpose,
+    // including commercial applications, and to alter it and redistribute it
+    // freely, subject to the following restrictions:
+    //
+    // 1. The origin of this software must not be misrepresented; you must not
+    //   claim that you wrote the original software. If you use this software
+    //   in a product, an acknowledgment in the product documentation would be
+    //   appreciated but is not required.
+    // 2. Altered source versions must be plainly marked as such, and must not be
+    //   misrepresented as being the original software.
+    // 3. This notice may not be removed or altered from any source distribution.
+
+    // See state defs from inflate.js
+    const BAD$1$1 = 16209;       /* got a data error -- remain here until reset */
+    const TYPE$1$1 = 16191;      /* i: waiting for type bits, including last-flag bit */
+
+    /*
+       Decode literal, length, and distance codes and write out the resulting
+       literal and match bytes until either not enough input or output is
+       available, an end-of-block is encountered, or a data error is encountered.
+       When large enough input and output buffers are supplied to inflate(), for
+       example, a 16K input buffer and a 64K output buffer, more than 95% of the
+       inflate execution time is spent in this routine.
+
+       Entry assumptions:
+
+            state.mode === LEN
+            strm.avail_in >= 6
+            strm.avail_out >= 258
+            start >= strm.avail_out
+            state.bits < 8
+
+       On return, state.mode is one of:
+
+            LEN -- ran out of enough output space or enough available input
+            TYPE -- reached end of block code, inflate() to interpret next block
+            BAD -- error in block data
+
+       Notes:
+
+        - The maximum input bits used by a length/distance pair is 15 bits for the
+          length code, 5 bits for the length extra, 15 bits for the distance code,
+          and 13 bits for the distance extra.  This totals 48 bits, or six bytes.
+          Therefore if strm.avail_in >= 6, then there is enough input to avoid
+          checking for available input while decoding.
+
+        - The maximum bytes that a single length/distance pair can output is 258
+          bytes, which is the maximum length that can be coded.  inflate_fast()
+          requires strm.avail_out >= 258 for each loop to avoid checking for
+          output space.
+     */
+    var inffast$1 = function inflate_fast(strm, start) {
+      let _in;                    /* local strm.input */
+      let last;                   /* have enough input while in < last */
+      let _out;                   /* local strm.output */
+      let beg;                    /* inflate()'s initial strm.output */
+      let end;                    /* while out < end, enough space available */
+    //#ifdef INFLATE_STRICT
+      let dmax;                   /* maximum distance from zlib header */
+    //#endif
+      let wsize;                  /* window size or zero if not using window */
+      let whave;                  /* valid bytes in the window */
+      let wnext;                  /* window write index */
+      // Use `s_window` instead `window`, avoid conflict with instrumentation tools
+      let s_window;               /* allocated sliding window, if wsize != 0 */
+      let hold;                   /* local strm.hold */
+      let bits;                   /* local strm.bits */
+      let lcode;                  /* local strm.lencode */
+      let dcode;                  /* local strm.distcode */
+      let lmask;                  /* mask for first level of length codes */
+      let dmask;                  /* mask for first level of distance codes */
+      let here;                   /* retrieved table entry */
+      let op;                     /* code bits, operation, extra bits, or */
+                                  /*  window position, window bytes to copy */
+      let len;                    /* match length, unused bytes */
+      let dist;                   /* match distance */
+      let from;                   /* where to copy match from */
+      let from_source;
+
+
+      let input, output; // JS specific, because we have no pointers
+
+      /* copy state to local variables */
+      const state = strm.state;
+      //here = state.here;
+      _in = strm.next_in;
+      input = strm.input;
+      last = _in + (strm.avail_in - 5);
+      _out = strm.next_out;
+      output = strm.output;
+      beg = _out - (start - strm.avail_out);
+      end = _out + (strm.avail_out - 257);
+    //#ifdef INFLATE_STRICT
+      dmax = state.dmax;
+    //#endif
+      wsize = state.wsize;
+      whave = state.whave;
+      wnext = state.wnext;
+      s_window = state.window;
+      hold = state.hold;
+      bits = state.bits;
+      lcode = state.lencode;
+      dcode = state.distcode;
+      lmask = (1 << state.lenbits) - 1;
+      dmask = (1 << state.distbits) - 1;
+
+
+      /* decode literals and length/distances until end-of-block or not enough
+         input data or output space */
+
+      top:
+      do {
+        if (bits < 15) {
+          hold += input[_in++] << bits;
+          bits += 8;
+          hold += input[_in++] << bits;
+          bits += 8;
+        }
+
+        here = lcode[hold & lmask];
+
+        dolen:
+        for (;;) { // Goto emulation
+          op = here >>> 24/*here.bits*/;
+          hold >>>= op;
+          bits -= op;
+          op = (here >>> 16) & 0xff/*here.op*/;
+          if (op === 0) {                          /* literal */
+            //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
+            //        "inflate:         literal '%c'\n" :
+            //        "inflate:         literal 0x%02x\n", here.val));
+            output[_out++] = here & 0xffff/*here.val*/;
+          }
+          else if (op & 16) {                     /* length base */
+            len = here & 0xffff/*here.val*/;
+            op &= 15;                           /* number of extra bits */
+            if (op) {
+              if (bits < op) {
+                hold += input[_in++] << bits;
+                bits += 8;
+              }
+              len += hold & ((1 << op) - 1);
+              hold >>>= op;
+              bits -= op;
+            }
+            //Tracevv((stderr, "inflate:         length %u\n", len));
+            if (bits < 15) {
+              hold += input[_in++] << bits;
+              bits += 8;
+              hold += input[_in++] << bits;
+              bits += 8;
+            }
+            here = dcode[hold & dmask];
+
+            dodist:
+            for (;;) { // goto emulation
+              op = here >>> 24/*here.bits*/;
+              hold >>>= op;
+              bits -= op;
+              op = (here >>> 16) & 0xff/*here.op*/;
+
+              if (op & 16) {                      /* distance base */
+                dist = here & 0xffff/*here.val*/;
+                op &= 15;                       /* number of extra bits */
+                if (bits < op) {
+                  hold += input[_in++] << bits;
+                  bits += 8;
+                  if (bits < op) {
+                    hold += input[_in++] << bits;
+                    bits += 8;
+                  }
+                }
+                dist += hold & ((1 << op) - 1);
+    //#ifdef INFLATE_STRICT
+                if (dist > dmax) {
+                  strm.msg = 'invalid distance too far back';
+                  state.mode = BAD$1$1;
+                  break top;
+                }
+    //#endif
+                hold >>>= op;
+                bits -= op;
+                //Tracevv((stderr, "inflate:         distance %u\n", dist));
+                op = _out - beg;                /* max distance in output */
+                if (dist > op) {                /* see if copy from window */
+                  op = dist - op;               /* distance back in window */
+                  if (op > whave) {
+                    if (state.sane) {
+                      strm.msg = 'invalid distance too far back';
+                      state.mode = BAD$1$1;
+                      break top;
+                    }
+
+    // (!) This block is disabled in zlib defaults,
+    // don't enable it for binary compatibility
+    //#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
+    //                if (len <= op - whave) {
+    //                  do {
+    //                    output[_out++] = 0;
+    //                  } while (--len);
+    //                  continue top;
+    //                }
+    //                len -= op - whave;
+    //                do {
+    //                  output[_out++] = 0;
+    //                } while (--op > whave);
+    //                if (op === 0) {
+    //                  from = _out - dist;
+    //                  do {
+    //                    output[_out++] = output[from++];
+    //                  } while (--len);
+    //                  continue top;
+    //                }
+    //#endif
+                  }
+                  from = 0; // window index
+                  from_source = s_window;
+                  if (wnext === 0) {           /* very common case */
+                    from += wsize - op;
+                    if (op < len) {         /* some from window */
+                      len -= op;
+                      do {
+                        output[_out++] = s_window[from++];
+                      } while (--op);
+                      from = _out - dist;  /* rest from output */
+                      from_source = output;
+                    }
+                  }
+                  else if (wnext < op) {      /* wrap around window */
+                    from += wsize + wnext - op;
+                    op -= wnext;
+                    if (op < len) {         /* some from end of window */
+                      len -= op;
+                      do {
+                        output[_out++] = s_window[from++];
+                      } while (--op);
+                      from = 0;
+                      if (wnext < len) {  /* some from start of window */
+                        op = wnext;
+                        len -= op;
+                        do {
+                          output[_out++] = s_window[from++];
+                        } while (--op);
+                        from = _out - dist;      /* rest from output */
+                        from_source = output;
+                      }
+                    }
+                  }
+                  else {                      /* contiguous in window */
+                    from += wnext - op;
+                    if (op < len) {         /* some from window */
+                      len -= op;
+                      do {
+                        output[_out++] = s_window[from++];
+                      } while (--op);
+                      from = _out - dist;  /* rest from output */
+                      from_source = output;
+                    }
+                  }
+                  while (len > 2) {
+                    output[_out++] = from_source[from++];
+                    output[_out++] = from_source[from++];
+                    output[_out++] = from_source[from++];
+                    len -= 3;
+                  }
+                  if (len) {
+                    output[_out++] = from_source[from++];
+                    if (len > 1) {
+                      output[_out++] = from_source[from++];
+                    }
+                  }
+                }
+                else {
+                  from = _out - dist;          /* copy direct from output */
+                  do {                        /* minimum length is three */
+                    output[_out++] = output[from++];
+                    output[_out++] = output[from++];
+                    output[_out++] = output[from++];
+                    len -= 3;
+                  } while (len > 2);
+                  if (len) {
+                    output[_out++] = output[from++];
+                    if (len > 1) {
+                      output[_out++] = output[from++];
+                    }
+                  }
+                }
+              }
+              else if ((op & 64) === 0) {          /* 2nd level distance code */
+                here = dcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
+                continue dodist;
+              }
+              else {
+                strm.msg = 'invalid distance code';
+                state.mode = BAD$1$1;
+                break top;
+              }
+
+              break; // need to emulate goto via "continue"
+            }
+          }
+          else if ((op & 64) === 0) {              /* 2nd level length code */
+            here = lcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];
+            continue dolen;
+          }
+          else if (op & 32) {                     /* end-of-block */
+            //Tracevv((stderr, "inflate:         end of block\n"));
+            state.mode = TYPE$1$1;
+            break top;
+          }
+          else {
+            strm.msg = 'invalid literal/length code';
+            state.mode = BAD$1$1;
+            break top;
+          }
+
+          break; // need to emulate goto via "continue"
+        }
+      } while (_in < last && _out < end);
+
+      /* return unused bytes (on entry, bits < 8, so in won't go too far back) */
+      len = bits >> 3;
+      _in -= len;
+      bits -= len << 3;
+      hold &= (1 << bits) - 1;
+
+      /* update state and return */
+      strm.next_in = _in;
+      strm.next_out = _out;
+      strm.avail_in = (_in < last ? 5 + (last - _in) : 5 - (_in - last));
+      strm.avail_out = (_out < end ? 257 + (end - _out) : 257 - (_out - end));
+      state.hold = hold;
+      state.bits = bits;
+      return;
+    };
+
+    // (C) 1995-2013 Jean-loup Gailly and Mark Adler
+    // (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+    //
+    // This software is provided 'as-is', without any express or implied
+    // warranty. In no event will the authors be held liable for any damages
+    // arising from the use of this software.
+    //
+    // Permission is granted to anyone to use this software for any purpose,
+    // including commercial applications, and to alter it and redistribute it
+    // freely, subject to the following restrictions:
+    //
+    // 1. The origin of this software must not be misrepresented; you must not
+    //   claim that you wrote the original software. If you use this software
+    //   in a product, an acknowledgment in the product documentation would be
+    //   appreciated but is not required.
+    // 2. Altered source versions must be plainly marked as such, and must not be
+    //   misrepresented as being the original software.
+    // 3. This notice may not be removed or altered from any source distribution.
+
+    const MAXBITS$1 = 15;
+    const ENOUGH_LENS$1$1 = 852;
+    const ENOUGH_DISTS$1$1 = 592;
+    //const ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS);
+
+    const CODES$1$1 = 0;
+    const LENS$1$1 = 1;
+    const DISTS$1$1 = 2;
+
+    const lbase$1 = new Uint16Array([ /* Length codes 257..285 base */
+      3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
+      35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0
+    ]);
+
+    const lext$1 = new Uint8Array([ /* Length codes 257..285 extra */
+      16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
+      19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78
+    ]);
+
+    const dbase$1 = new Uint16Array([ /* Distance codes 0..29 base */
+      1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
+      257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
+      8193, 12289, 16385, 24577, 0, 0
+    ]);
+
+    const dext$1 = new Uint8Array([ /* Distance codes 0..29 extra */
+      16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
+      23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
+      28, 28, 29, 29, 64, 64
+    ]);
+
+    const inflate_table$1 = (type, lens, lens_index, codes, table, table_index, work, opts) =>
+    {
+      const bits = opts.bits;
+          //here = opts.here; /* table entry for duplication */
+
+      let len = 0;               /* a code's length in bits */
+      let sym = 0;               /* index of code symbols */
+      let min = 0, max = 0;          /* minimum and maximum code lengths */
+      let root = 0;              /* number of index bits for root table */
+      let curr = 0;              /* number of index bits for current table */
+      let drop = 0;              /* code bits to drop for sub-table */
+      let left = 0;                   /* number of prefix codes available */
+      let used = 0;              /* code entries in table used */
+      let huff = 0;              /* Huffman code */
+      let incr;              /* for incrementing code, index */
+      let fill;              /* index for replicating entries */
+      let low;               /* low bits for current root entry */
+      let mask;              /* mask for low root bits */
+      let next;             /* next available space in table */
+      let base = null;     /* base value table to use */
+    //  let shoextra;    /* extra bits table to use */
+      let match;                  /* use base and extra for symbol >= match */
+      const count = new Uint16Array(MAXBITS$1 + 1); //[MAXBITS+1];    /* number of codes of each length */
+      const offs = new Uint16Array(MAXBITS$1 + 1); //[MAXBITS+1];     /* offsets in table for each length */
+      let extra = null;
+
+      let here_bits, here_op, here_val;
+
+      /*
+       Process a set of code lengths to create a canonical Huffman code.  The
+       code lengths are lens[0..codes-1].  Each length corresponds to the
+       symbols 0..codes-1.  The Huffman code is generated by first sorting the
+       symbols by length from short to long, and retaining the symbol order
+       for codes with equal lengths.  Then the code starts with all zero bits
+       for the first code of the shortest length, and the codes are integer
+       increments for the same length, and zeros are appended as the length
+       increases.  For the deflate format, these bits are stored backwards
+       from their more natural integer increment ordering, and so when the
+       decoding tables are built in the large loop below, the integer codes
+       are incremented backwards.
+
+       This routine assumes, but does not check, that all of the entries in
+       lens[] are in the range 0..MAXBITS.  The caller must assure this.
+       1..MAXBITS is interpreted as that code length.  zero means that that
+       symbol does not occur in this code.
+
+       The codes are sorted by computing a count of codes for each length,
+       creating from that a table of starting indices for each length in the
+       sorted table, and then entering the symbols in order in the sorted
+       table.  The sorted table is work[], with that space being provided by
+       the caller.
+
+       The length counts are used for other purposes as well, i.e. finding
+       the minimum and maximum length codes, determining if there are any
+       codes at all, checking for a valid set of lengths, and looking ahead
+       at length counts to determine sub-table sizes when building the
+       decoding tables.
+       */
+
+      /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
+      for (len = 0; len <= MAXBITS$1; len++) {
+        count[len] = 0;
+      }
+      for (sym = 0; sym < codes; sym++) {
+        count[lens[lens_index + sym]]++;
+      }
+
+      /* bound code lengths, force root to be within code lengths */
+      root = bits;
+      for (max = MAXBITS$1; max >= 1; max--) {
+        if (count[max] !== 0) { break; }
+      }
+      if (root > max) {
+        root = max;
+      }
+      if (max === 0) {                     /* no symbols to code at all */
+        //table.op[opts.table_index] = 64;  //here.op = (var char)64;    /* invalid code marker */
+        //table.bits[opts.table_index] = 1;   //here.bits = (var char)1;
+        //table.val[opts.table_index++] = 0;   //here.val = (var short)0;
+        table[table_index++] = (1 << 24) | (64 << 16) | 0;
+
+
+        //table.op[opts.table_index] = 64;
+        //table.bits[opts.table_index] = 1;
+        //table.val[opts.table_index++] = 0;
+        table[table_index++] = (1 << 24) | (64 << 16) | 0;
+
+        opts.bits = 1;
+        return 0;     /* no symbols, but wait for decoding to report error */
+      }
+      for (min = 1; min < max; min++) {
+        if (count[min] !== 0) { break; }
+      }
+      if (root < min) {
+        root = min;
+      }
+
+      /* check for an over-subscribed or incomplete set of lengths */
+      left = 1;
+      for (len = 1; len <= MAXBITS$1; len++) {
+        left <<= 1;
+        left -= count[len];
+        if (left < 0) {
+          return -1;
+        }        /* over-subscribed */
+      }
+      if (left > 0 && (type === CODES$1$1 || max !== 1)) {
+        return -1;                      /* incomplete set */
+      }
+
+      /* generate offsets into symbol table for each length for sorting */
+      offs[1] = 0;
+      for (len = 1; len < MAXBITS$1; len++) {
+        offs[len + 1] = offs[len] + count[len];
+      }
+
+      /* sort symbols by length, by symbol order within each length */
+      for (sym = 0; sym < codes; sym++) {
+        if (lens[lens_index + sym] !== 0) {
+          work[offs[lens[lens_index + sym]]++] = sym;
+        }
+      }
+
+      /*
+       Create and fill in decoding tables.  In this loop, the table being
+       filled is at next and has curr index bits.  The code being used is huff
+       with length len.  That code is converted to an index by dropping drop
+       bits off of the bottom.  For codes where len is less than drop + curr,
+       those top drop + curr - len bits are incremented through all values to
+       fill the table with replicated entries.
+
+       root is the number of index bits for the root table.  When len exceeds
+       root, sub-tables are created pointed to by the root entry with an index
+       of the low root bits of huff.  This is saved in low to check for when a
+       new sub-table should be started.  drop is zero when the root table is
+       being filled, and drop is root when sub-tables are being filled.
+
+       When a new sub-table is needed, it is necessary to look ahead in the
+       code lengths to determine what size sub-table is needed.  The length
+       counts are used for this, and so count[] is decremented as codes are
+       entered in the tables.
+
+       used keeps track of how many table entries have been allocated from the
+       provided *table space.  It is checked for LENS and DIST tables against
+       the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
+       the initial root table size constants.  See the comments in inftrees.h
+       for more information.
+
+       sym increments through all symbols, and the loop terminates when
+       all codes of length max, i.e. all codes, have been processed.  This
+       routine permits incomplete codes, so another loop after this one fills
+       in the rest of the decoding tables with invalid code markers.
+       */
+
+      /* set up for code type */
+      // poor man optimization - use if-else instead of switch,
+      // to avoid deopts in old v8
+      if (type === CODES$1$1) {
+        base = extra = work;    /* dummy value--not used */
+        match = 20;
+
+      } else if (type === LENS$1$1) {
+        base = lbase$1;
+        extra = lext$1;
+        match = 257;
+
+      } else {                    /* DISTS */
+        base = dbase$1;
+        extra = dext$1;
+        match = 0;
+      }
+
+      /* initialize opts for loop */
+      huff = 0;                   /* starting code */
+      sym = 0;                    /* starting code symbol */
+      len = min;                  /* starting code length */
+      next = table_index;              /* current table to fill in */
+      curr = root;                /* current table index bits */
+      drop = 0;                   /* current bits to drop from code for index */
+      low = -1;                   /* trigger new sub-table when len > root */
+      used = 1 << root;          /* use root table entries */
+      mask = used - 1;            /* mask for comparing low */
+
+      /* check available table space */
+      if ((type === LENS$1$1 && used > ENOUGH_LENS$1$1) ||
+        (type === DISTS$1$1 && used > ENOUGH_DISTS$1$1)) {
+        return 1;
+      }
+
+      /* process all codes and make table entries */
+      for (;;) {
+        /* create table entry */
+        here_bits = len - drop;
+        if (work[sym] + 1 < match) {
+          here_op = 0;
+          here_val = work[sym];
+        }
+        else if (work[sym] >= match) {
+          here_op = extra[work[sym] - match];
+          here_val = base[work[sym] - match];
+        }
+        else {
+          here_op = 32 + 64;         /* end of block */
+          here_val = 0;
+        }
+
+        /* replicate for those indices with low len bits equal to huff */
+        incr = 1 << (len - drop);
+        fill = 1 << curr;
+        min = fill;                 /* save offset to next table */
+        do {
+          fill -= incr;
+          table[next + (huff >> drop) + fill] = (here_bits << 24) | (here_op << 16) | here_val |0;
+        } while (fill !== 0);
+
+        /* backwards increment the len-bit code huff */
+        incr = 1 << (len - 1);
+        while (huff & incr) {
+          incr >>= 1;
+        }
+        if (incr !== 0) {
+          huff &= incr - 1;
+          huff += incr;
+        } else {
+          huff = 0;
+        }
+
+        /* go to next symbol, update count, len */
+        sym++;
+        if (--count[len] === 0) {
+          if (len === max) { break; }
+          len = lens[lens_index + work[sym]];
+        }
+
+        /* create new sub-table if needed */
+        if (len > root && (huff & mask) !== low) {
+          /* if first time, transition to sub-tables */
+          if (drop === 0) {
+            drop = root;
+          }
+
+          /* increment past last table */
+          next += min;            /* here min is 1 << curr */
+
+          /* determine length of next table */
+          curr = len - drop;
+          left = 1 << curr;
+          while (curr + drop < max) {
+            left -= count[curr + drop];
+            if (left <= 0) { break; }
+            curr++;
+            left <<= 1;
+          }
+
+          /* check for enough space */
+          used += 1 << curr;
+          if ((type === LENS$1$1 && used > ENOUGH_LENS$1$1) ||
+            (type === DISTS$1$1 && used > ENOUGH_DISTS$1$1)) {
+            return 1;
+          }
+
+          /* point entry in root table to sub-table */
+          low = huff & mask;
+          /*table.op[low] = curr;
+          table.bits[low] = root;
+          table.val[low] = next - opts.table_index;*/
+          table[low] = (root << 24) | (curr << 16) | (next - table_index) |0;
+        }
+      }
+
+      /* fill in remaining table entry if code is incomplete (guaranteed to have
+       at most one remaining entry, since if the code is incomplete, the
+       maximum code length that was allowed to get this far is one bit) */
+      if (huff !== 0) {
+        //table.op[next + huff] = 64;            /* invalid code marker */
+        //table.bits[next + huff] = len - drop;
+        //table.val[next + huff] = 0;
+        table[next + huff] = ((len - drop) << 24) | (64 << 16) |0;
+      }
+
+      /* set return parameters */
+      //opts.table_index += used;
+      opts.bits = root;
+      return 0;
+    };
+
+
+    var inftrees$1 = inflate_table$1;
+
+    // (C) 1995-2013 Jean-loup Gailly and Mark Adler
+    // (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+    //
+    // This software is provided 'as-is', without any express or implied
+    // warranty. In no event will the authors be held liable for any damages
+    // arising from the use of this software.
+    //
+    // Permission is granted to anyone to use this software for any purpose,
+    // including commercial applications, and to alter it and redistribute it
+    // freely, subject to the following restrictions:
+    //
+    // 1. The origin of this software must not be misrepresented; you must not
+    //   claim that you wrote the original software. If you use this software
+    //   in a product, an acknowledgment in the product documentation would be
+    //   appreciated but is not required.
+    // 2. Altered source versions must be plainly marked as such, and must not be
+    //   misrepresented as being the original software.
+    // 3. This notice may not be removed or altered from any source distribution.
+
+
+
+
+
+
+    const CODES$2 = 0;
+    const LENS$2 = 1;
+    const DISTS$2 = 2;
+
+    /* Public constants ==========================================================*/
+    /* ===========================================================================*/
+
+    const {
+      Z_FINISH: Z_FINISH$1$1, Z_BLOCK: Z_BLOCK$2, Z_TREES: Z_TREES$1,
+      Z_OK: Z_OK$1$1, Z_STREAM_END: Z_STREAM_END$1$1, Z_NEED_DICT: Z_NEED_DICT$1$1, Z_STREAM_ERROR: Z_STREAM_ERROR$1$1, Z_DATA_ERROR: Z_DATA_ERROR$1$1, Z_MEM_ERROR: Z_MEM_ERROR$1$1, Z_BUF_ERROR: Z_BUF_ERROR$2,
+      Z_DEFLATED: Z_DEFLATED$3
+    } = constants$2$1;
+
+
+    /* STATES ====================================================================*/
+    /* ===========================================================================*/
+
+
+    const    HEAD$1 = 16180;       /* i: waiting for magic header */
+    const    FLAGS$1 = 16181;      /* i: waiting for method and flags (gzip) */
+    const    TIME$1 = 16182;       /* i: waiting for modification time (gzip) */
+    const    OS$1 = 16183;         /* i: waiting for extra flags and operating system (gzip) */
+    const    EXLEN$1 = 16184;      /* i: waiting for extra length (gzip) */
+    const    EXTRA$1 = 16185;      /* i: waiting for extra bytes (gzip) */
+    const    NAME$1 = 16186;       /* i: waiting for end of file name (gzip) */
+    const    COMMENT$1 = 16187;    /* i: waiting for end of comment (gzip) */
+    const    HCRC$1 = 16188;       /* i: waiting for header crc (gzip) */
+    const    DICTID$1 = 16189;    /* i: waiting for dictionary check value */
+    const    DICT$1 = 16190;      /* waiting for inflateSetDictionary() call */
+    const        TYPE$2 = 16191;      /* i: waiting for type bits, including last-flag bit */
+    const        TYPEDO$1 = 16192;    /* i: same, but skip check to exit inflate on new block */
+    const        STORED$1 = 16193;    /* i: waiting for stored size (length and complement) */
+    const        COPY_$1 = 16194;     /* i/o: same as COPY below, but only first time in */
+    const        COPY$1 = 16195;      /* i/o: waiting for input or output to copy stored block */
+    const        TABLE$1 = 16196;     /* i: waiting for dynamic block table lengths */
+    const        LENLENS$1 = 16197;   /* i: waiting for code length code lengths */
+    const        CODELENS$1 = 16198;  /* i: waiting for length/lit and distance code lengths */
+    const            LEN_$1 = 16199;      /* i: same as LEN below, but only first time in */
+    const            LEN$1 = 16200;       /* i: waiting for length/lit/eob code */
+    const            LENEXT$1 = 16201;    /* i: waiting for length extra bits */
+    const            DIST$1 = 16202;      /* i: waiting for distance code */
+    const            DISTEXT$1 = 16203;   /* i: waiting for distance extra bits */
+    const            MATCH$1 = 16204;     /* o: waiting for output space to copy string */
+    const            LIT$1 = 16205;       /* o: waiting for output space to write literal */
+    const    CHECK$1 = 16206;     /* i: waiting for 32-bit check value */
+    const    LENGTH$1 = 16207;    /* i: waiting for 32-bit length (gzip) */
+    const    DONE$1 = 16208;      /* finished check, done -- remain here until reset */
+    const    BAD$2 = 16209;       /* got a data error -- remain here until reset */
+    const    MEM$1 = 16210;       /* got an inflate() memory error -- remain here until reset */
+    const    SYNC$1 = 16211;      /* looking for synchronization bytes to restart inflate() */
+
+    /* ===========================================================================*/
+
+
+
+    const ENOUGH_LENS$2 = 852;
+    const ENOUGH_DISTS$2 = 592;
+    //const ENOUGH =  (ENOUGH_LENS+ENOUGH_DISTS);
+
+    const MAX_WBITS$2 = 15;
+    /* 32K LZ77 window */
+    const DEF_WBITS$1 = MAX_WBITS$2;
+
+
+    const zswap32$1 = (q) => {
+
+      return  (((q >>> 24) & 0xff) +
+              ((q >>> 8) & 0xff00) +
+              ((q & 0xff00) << 8) +
+              ((q & 0xff) << 24));
+    };
+
+
+    function InflateState$1() {
+      this.strm = null;           /* pointer back to this zlib stream */
+      this.mode = 0;              /* current inflate mode */
+      this.last = false;          /* true if processing last block */
+      this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip,
+                                     bit 2 true to validate check value */
+      this.havedict = false;      /* true if dictionary provided */
+      this.flags = 0;             /* gzip header method and flags (0 if zlib), or
+                                     -1 if raw or no header yet */
+      this.dmax = 0;              /* zlib header max distance (INFLATE_STRICT) */
+      this.check = 0;             /* protected copy of check value */
+      this.total = 0;             /* protected copy of output count */
+      // TODO: may be {}
+      this.head = null;           /* where to save gzip header information */
+
+      /* sliding window */
+      this.wbits = 0;             /* log base 2 of requested window size */
+      this.wsize = 0;             /* window size or zero if not using window */
+      this.whave = 0;             /* valid bytes in the window */
+      this.wnext = 0;             /* window write index */
+      this.window = null;         /* allocated sliding window, if needed */
+
+      /* bit accumulator */
+      this.hold = 0;              /* input bit accumulator */
+      this.bits = 0;              /* number of bits in "in" */
+
+      /* for string and stored block copying */
+      this.length = 0;            /* literal or length of data to copy */
+      this.offset = 0;            /* distance back to copy string from */
+
+      /* for table and code decoding */
+      this.extra = 0;             /* extra bits needed */
+
+      /* fixed and dynamic code tables */
+      this.lencode = null;          /* starting table for length/literal codes */
+      this.distcode = null;         /* starting table for distance codes */
+      this.lenbits = 0;           /* index bits for lencode */
+      this.distbits = 0;          /* index bits for distcode */
+
+      /* dynamic table building */
+      this.ncode = 0;             /* number of code length code lengths */
+      this.nlen = 0;              /* number of length code lengths */
+      this.ndist = 0;             /* number of distance code lengths */
+      this.have = 0;              /* number of code lengths in lens[] */
+      this.next = null;              /* next available space in codes[] */
+
+      this.lens = new Uint16Array(320); /* temporary storage for code lengths */
+      this.work = new Uint16Array(288); /* work area for code table building */
+
+      /*
+       because we don't have pointers in js, we use lencode and distcode directly
+       as buffers so we don't need codes
+      */
+      //this.codes = new Int32Array(ENOUGH);       /* space for code tables */
+      this.lendyn = null;              /* dynamic table for length/literal codes (JS specific) */
+      this.distdyn = null;             /* dynamic table for distance codes (JS specific) */
+      this.sane = 0;                   /* if false, allow invalid distance too far */
+      this.back = 0;                   /* bits back of last unprocessed length/lit */
+      this.was = 0;                    /* initial length of match */
+    }
+
+
+    const inflateStateCheck = (strm) => {
+
+      if (!strm) {
+        return 1;
+      }
+      const state = strm.state;
+      if (!state || state.strm !== strm ||
+        state.mode < HEAD$1 || state.mode > SYNC$1) {
+        return 1;
+      }
+      return 0;
+    };
+
+
+    const inflateResetKeep$1 = (strm) => {
+
+      if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1$1; }
+      const state = strm.state;
+      strm.total_in = strm.total_out = state.total = 0;
+      strm.msg = ''; /*Z_NULL*/
+      if (state.wrap) {       /* to support ill-conceived Java test suite */
+        strm.adler = state.wrap & 1;
+      }
+      state.mode = HEAD$1;
+      state.last = 0;
+      state.havedict = 0;
+      state.flags = -1;
+      state.dmax = 32768;
+      state.head = null/*Z_NULL*/;
+      state.hold = 0;
+      state.bits = 0;
+      //state.lencode = state.distcode = state.next = state.codes;
+      state.lencode = state.lendyn = new Int32Array(ENOUGH_LENS$2);
+      state.distcode = state.distdyn = new Int32Array(ENOUGH_DISTS$2);
+
+      state.sane = 1;
+      state.back = -1;
+      //Tracev((stderr, "inflate: reset\n"));
+      return Z_OK$1$1;
+    };
+
+
+    const inflateReset$1 = (strm) => {
+
+      if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1$1; }
+      const state = strm.state;
+      state.wsize = 0;
+      state.whave = 0;
+      state.wnext = 0;
+      return inflateResetKeep$1(strm);
+
+    };
+
+
+    const inflateReset2$1 = (strm, windowBits) => {
+      let wrap;
+
+      /* get the state */
+      if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1$1; }
+      const state = strm.state;
+
+      /* extract wrap request from windowBits parameter */
+      if (windowBits < 0) {
+        wrap = 0;
+        windowBits = -windowBits;
+      }
+      else {
+        wrap = (windowBits >> 4) + 5;
+        if (windowBits < 48) {
+          windowBits &= 15;
+        }
+      }
+
+      /* set number of window bits, free window if different */
+      if (windowBits && (windowBits < 8 || windowBits > 15)) {
+        return Z_STREAM_ERROR$1$1;
+      }
+      if (state.window !== null && state.wbits !== windowBits) {
+        state.window = null;
+      }
+
+      /* update state and reset the rest of it */
+      state.wrap = wrap;
+      state.wbits = windowBits;
+      return inflateReset$1(strm);
+    };
+
+
+    const inflateInit2$1 = (strm, windowBits) => {
+
+      if (!strm) { return Z_STREAM_ERROR$1$1; }
+      //strm.msg = Z_NULL;                 /* in case we return an error */
+
+      const state = new InflateState$1();
+
+      //if (state === Z_NULL) return Z_MEM_ERROR;
+      //Tracev((stderr, "inflate: allocated\n"));
+      strm.state = state;
+      state.strm = strm;
+      state.window = null/*Z_NULL*/;
+      state.mode = HEAD$1;     /* to pass state test in inflateReset2() */
+      const ret = inflateReset2$1(strm, windowBits);
+      if (ret !== Z_OK$1$1) {
+        strm.state = null/*Z_NULL*/;
+      }
+      return ret;
+    };
+
+
+    const inflateInit$1 = (strm) => {
+
+      return inflateInit2$1(strm, DEF_WBITS$1);
+    };
+
+
+    /*
+     Return state with length and distance decoding tables and index sizes set to
+     fixed code decoding.  Normally this returns fixed tables from inffixed.h.
+     If BUILDFIXED is defined, then instead this routine builds the tables the
+     first time it's called, and returns those tables the first time and
+     thereafter.  This reduces the size of the code by about 2K bytes, in
+     exchange for a little execution time.  However, BUILDFIXED should not be
+     used for threaded applications, since the rewriting of the tables and virgin
+     may not be thread-safe.
+     */
+    let virgin$1 = true;
+
+    let lenfix$1, distfix$1; // We have no pointers in JS, so keep tables separate
+
+
+    const fixedtables$1 = (state) => {
+
+      /* build fixed huffman tables if first call (may not be thread safe) */
+      if (virgin$1) {
+        lenfix$1 = new Int32Array(512);
+        distfix$1 = new Int32Array(32);
+
+        /* literal/length table */
+        let sym = 0;
+        while (sym < 144) { state.lens[sym++] = 8; }
+        while (sym < 256) { state.lens[sym++] = 9; }
+        while (sym < 280) { state.lens[sym++] = 7; }
+        while (sym < 288) { state.lens[sym++] = 8; }
+
+        inftrees$1(LENS$2,  state.lens, 0, 288, lenfix$1,   0, state.work, { bits: 9 });
+
+        /* distance table */
+        sym = 0;
+        while (sym < 32) { state.lens[sym++] = 5; }
+
+        inftrees$1(DISTS$2, state.lens, 0, 32,   distfix$1, 0, state.work, { bits: 5 });
+
+        /* do this just once */
+        virgin$1 = false;
+      }
+
+      state.lencode = lenfix$1;
+      state.lenbits = 9;
+      state.distcode = distfix$1;
+      state.distbits = 5;
+    };
+
+
+    /*
+     Update the window with the last wsize (normally 32K) bytes written before
+     returning.  If window does not exist yet, create it.  This is only called
+     when a window is already in use, or when output has been written during this
+     inflate call, but the end of the deflate stream has not been reached yet.
+     It is also called to create a window for dictionary data when a dictionary
+     is loaded.
+
+     Providing output buffers larger than 32K to inflate() should provide a speed
+     advantage, since only the last 32K of output is copied to the sliding window
+     upon return from inflate(), and since all distances after the first 32K of
+     output will fall in the output data, making match copies simpler and faster.
+     The advantage may be dependent on the size of the processor's data caches.
+     */
+    const updatewindow$1 = (strm, src, end, copy) => {
+
+      let dist;
+      const state = strm.state;
+
+      /* if it hasn't been done already, allocate space for the window */
+      if (state.window === null) {
+        state.wsize = 1 << state.wbits;
+        state.wnext = 0;
+        state.whave = 0;
+
+        state.window = new Uint8Array(state.wsize);
+      }
+
+      /* copy state->wsize or less output bytes into the circular window */
+      if (copy >= state.wsize) {
+        state.window.set(src.subarray(end - state.wsize, end), 0);
+        state.wnext = 0;
+        state.whave = state.wsize;
+      }
+      else {
+        dist = state.wsize - state.wnext;
+        if (dist > copy) {
+          dist = copy;
+        }
+        //zmemcpy(state->window + state->wnext, end - copy, dist);
+        state.window.set(src.subarray(end - copy, end - copy + dist), state.wnext);
+        copy -= dist;
+        if (copy) {
+          //zmemcpy(state->window, end - copy, copy);
+          state.window.set(src.subarray(end - copy, end), 0);
+          state.wnext = copy;
+          state.whave = state.wsize;
+        }
+        else {
+          state.wnext += dist;
+          if (state.wnext === state.wsize) { state.wnext = 0; }
+          if (state.whave < state.wsize) { state.whave += dist; }
+        }
+      }
+      return 0;
+    };
+
+
+    const inflate$2$1 = (strm, flush) => {
+
+      let state;
+      let input, output;          // input/output buffers
+      let next;                   /* next input INDEX */
+      let put;                    /* next output INDEX */
+      let have, left;             /* available input and output */
+      let hold;                   /* bit buffer */
+      let bits;                   /* bits in bit buffer */
+      let _in, _out;              /* save starting available input and output */
+      let copy;                   /* number of stored or match bytes to copy */
+      let from;                   /* where to copy match bytes from */
+      let from_source;
+      let here = 0;               /* current decoding table entry */
+      let here_bits, here_op, here_val; // paked "here" denormalized (JS specific)
+      //let last;                   /* parent table entry */
+      let last_bits, last_op, last_val; // paked "last" denormalized (JS specific)
+      let len;                    /* length to copy for repeats, bits to drop */
+      let ret;                    /* return code */
+      const hbuf = new Uint8Array(4);    /* buffer for gzip header crc calculation */
+      let opts;
+
+      let n; // temporary variable for NEED_BITS
+
+      const order = /* permutation of code lengths */
+        new Uint8Array([ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ]);
+
+
+      if (inflateStateCheck(strm) || !strm.output ||
+          (!strm.input && strm.avail_in !== 0)) {
+        return Z_STREAM_ERROR$1$1;
+      }
+
+      state = strm.state;
+      if (state.mode === TYPE$2) { state.mode = TYPEDO$1; }    /* skip check */
+
+
+      //--- LOAD() ---
+      put = strm.next_out;
+      output = strm.output;
+      left = strm.avail_out;
+      next = strm.next_in;
+      input = strm.input;
+      have = strm.avail_in;
+      hold = state.hold;
+      bits = state.bits;
+      //---
+
+      _in = have;
+      _out = left;
+      ret = Z_OK$1$1;
+
+      inf_leave: // goto emulation
+      for (;;) {
+        switch (state.mode) {
+          case HEAD$1:
+            if (state.wrap === 0) {
+              state.mode = TYPEDO$1;
+              break;
+            }
+            //=== NEEDBITS(16);
+            while (bits < 16) {
+              if (have === 0) { break inf_leave; }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            //===//
+            if ((state.wrap & 2) && hold === 0x8b1f) {  /* gzip header */
+              if (state.wbits === 0) {
+                state.wbits = 15;
+              }
+              state.check = 0/*crc32(0L, Z_NULL, 0)*/;
+              //=== CRC2(state.check, hold);
+              hbuf[0] = hold & 0xff;
+              hbuf[1] = (hold >>> 8) & 0xff;
+              state.check = crc32_1$1(state.check, hbuf, 2, 0);
+              //===//
+
+              //=== INITBITS();
+              hold = 0;
+              bits = 0;
+              //===//
+              state.mode = FLAGS$1;
+              break;
+            }
+            if (state.head) {
+              state.head.done = false;
+            }
+            if (!(state.wrap & 1) ||   /* check if zlib header allowed */
+              (((hold & 0xff)/*BITS(8)*/ << 8) + (hold >> 8)) % 31) {
+              strm.msg = 'incorrect header check';
+              state.mode = BAD$2;
+              break;
+            }
+            if ((hold & 0x0f)/*BITS(4)*/ !== Z_DEFLATED$3) {
+              strm.msg = 'unknown compression method';
+              state.mode = BAD$2;
+              break;
+            }
+            //--- DROPBITS(4) ---//
+            hold >>>= 4;
+            bits -= 4;
+            //---//
+            len = (hold & 0x0f)/*BITS(4)*/ + 8;
+            if (state.wbits === 0) {
+              state.wbits = len;
+            }
+            if (len > 15 || len > state.wbits) {
+              strm.msg = 'invalid window size';
+              state.mode = BAD$2;
+              break;
+            }
+
+            // !!! pako patch. Force use `options.windowBits` if passed.
+            // Required to always use max window size by default.
+            state.dmax = 1 << state.wbits;
+            //state.dmax = 1 << len;
+
+            state.flags = 0;               /* indicate zlib header */
+            //Tracev((stderr, "inflate:   zlib header ok\n"));
+            strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
+            state.mode = hold & 0x200 ? DICTID$1 : TYPE$2;
+            //=== INITBITS();
+            hold = 0;
+            bits = 0;
+            //===//
+            break;
+          case FLAGS$1:
+            //=== NEEDBITS(16); */
+            while (bits < 16) {
+              if (have === 0) { break inf_leave; }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            //===//
+            state.flags = hold;
+            if ((state.flags & 0xff) !== Z_DEFLATED$3) {
+              strm.msg = 'unknown compression method';
+              state.mode = BAD$2;
+              break;
+            }
+            if (state.flags & 0xe000) {
+              strm.msg = 'unknown header flags set';
+              state.mode = BAD$2;
+              break;
+            }
+            if (state.head) {
+              state.head.text = ((hold >> 8) & 1);
+            }
+            if ((state.flags & 0x0200) && (state.wrap & 4)) {
+              //=== CRC2(state.check, hold);
+              hbuf[0] = hold & 0xff;
+              hbuf[1] = (hold >>> 8) & 0xff;
+              state.check = crc32_1$1(state.check, hbuf, 2, 0);
+              //===//
+            }
+            //=== INITBITS();
+            hold = 0;
+            bits = 0;
+            //===//
+            state.mode = TIME$1;
+            /* falls through */
+          case TIME$1:
+            //=== NEEDBITS(32); */
+            while (bits < 32) {
+              if (have === 0) { break inf_leave; }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            //===//
+            if (state.head) {
+              state.head.time = hold;
+            }
+            if ((state.flags & 0x0200) && (state.wrap & 4)) {
+              //=== CRC4(state.check, hold)
+              hbuf[0] = hold & 0xff;
+              hbuf[1] = (hold >>> 8) & 0xff;
+              hbuf[2] = (hold >>> 16) & 0xff;
+              hbuf[3] = (hold >>> 24) & 0xff;
+              state.check = crc32_1$1(state.check, hbuf, 4, 0);
+              //===
+            }
+            //=== INITBITS();
+            hold = 0;
+            bits = 0;
+            //===//
+            state.mode = OS$1;
+            /* falls through */
+          case OS$1:
+            //=== NEEDBITS(16); */
+            while (bits < 16) {
+              if (have === 0) { break inf_leave; }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            //===//
+            if (state.head) {
+              state.head.xflags = (hold & 0xff);
+              state.head.os = (hold >> 8);
+            }
+            if ((state.flags & 0x0200) && (state.wrap & 4)) {
+              //=== CRC2(state.check, hold);
+              hbuf[0] = hold & 0xff;
+              hbuf[1] = (hold >>> 8) & 0xff;
+              state.check = crc32_1$1(state.check, hbuf, 2, 0);
+              //===//
+            }
+            //=== INITBITS();
+            hold = 0;
+            bits = 0;
+            //===//
+            state.mode = EXLEN$1;
+            /* falls through */
+          case EXLEN$1:
+            if (state.flags & 0x0400) {
+              //=== NEEDBITS(16); */
+              while (bits < 16) {
+                if (have === 0) { break inf_leave; }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              //===//
+              state.length = hold;
+              if (state.head) {
+                state.head.extra_len = hold;
+              }
+              if ((state.flags & 0x0200) && (state.wrap & 4)) {
+                //=== CRC2(state.check, hold);
+                hbuf[0] = hold & 0xff;
+                hbuf[1] = (hold >>> 8) & 0xff;
+                state.check = crc32_1$1(state.check, hbuf, 2, 0);
+                //===//
+              }
+              //=== INITBITS();
+              hold = 0;
+              bits = 0;
+              //===//
+            }
+            else if (state.head) {
+              state.head.extra = null/*Z_NULL*/;
+            }
+            state.mode = EXTRA$1;
+            /* falls through */
+          case EXTRA$1:
+            if (state.flags & 0x0400) {
+              copy = state.length;
+              if (copy > have) { copy = have; }
+              if (copy) {
+                if (state.head) {
+                  len = state.head.extra_len - state.length;
+                  if (!state.head.extra) {
+                    // Use untyped array for more convenient processing later
+                    state.head.extra = new Uint8Array(state.head.extra_len);
+                  }
+                  state.head.extra.set(
+                    input.subarray(
+                      next,
+                      // extra field is limited to 65536 bytes
+                      // - no need for additional size check
+                      next + copy
+                    ),
+                    /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/
+                    len
+                  );
+                  //zmemcpy(state.head.extra + len, next,
+                  //        len + copy > state.head.extra_max ?
+                  //        state.head.extra_max - len : copy);
+                }
+                if ((state.flags & 0x0200) && (state.wrap & 4)) {
+                  state.check = crc32_1$1(state.check, input, copy, next);
+                }
+                have -= copy;
+                next += copy;
+                state.length -= copy;
+              }
+              if (state.length) { break inf_leave; }
+            }
+            state.length = 0;
+            state.mode = NAME$1;
+            /* falls through */
+          case NAME$1:
+            if (state.flags & 0x0800) {
+              if (have === 0) { break inf_leave; }
+              copy = 0;
+              do {
+                // TODO: 2 or 1 bytes?
+                len = input[next + copy++];
+                /* use constant limit because in js we should not preallocate memory */
+                if (state.head && len &&
+                    (state.length < 65536 /*state.head.name_max*/)) {
+                  state.head.name += String.fromCharCode(len);
+                }
+              } while (len && copy < have);
+
+              if ((state.flags & 0x0200) && (state.wrap & 4)) {
+                state.check = crc32_1$1(state.check, input, copy, next);
+              }
+              have -= copy;
+              next += copy;
+              if (len) { break inf_leave; }
+            }
+            else if (state.head) {
+              state.head.name = null;
+            }
+            state.length = 0;
+            state.mode = COMMENT$1;
+            /* falls through */
+          case COMMENT$1:
+            if (state.flags & 0x1000) {
+              if (have === 0) { break inf_leave; }
+              copy = 0;
+              do {
+                len = input[next + copy++];
+                /* use constant limit because in js we should not preallocate memory */
+                if (state.head && len &&
+                    (state.length < 65536 /*state.head.comm_max*/)) {
+                  state.head.comment += String.fromCharCode(len);
+                }
+              } while (len && copy < have);
+              if ((state.flags & 0x0200) && (state.wrap & 4)) {
+                state.check = crc32_1$1(state.check, input, copy, next);
+              }
+              have -= copy;
+              next += copy;
+              if (len) { break inf_leave; }
+            }
+            else if (state.head) {
+              state.head.comment = null;
+            }
+            state.mode = HCRC$1;
+            /* falls through */
+          case HCRC$1:
+            if (state.flags & 0x0200) {
+              //=== NEEDBITS(16); */
+              while (bits < 16) {
+                if (have === 0) { break inf_leave; }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              //===//
+              if ((state.wrap & 4) && hold !== (state.check & 0xffff)) {
+                strm.msg = 'header crc mismatch';
+                state.mode = BAD$2;
+                break;
+              }
+              //=== INITBITS();
+              hold = 0;
+              bits = 0;
+              //===//
+            }
+            if (state.head) {
+              state.head.hcrc = ((state.flags >> 9) & 1);
+              state.head.done = true;
+            }
+            strm.adler = state.check = 0;
+            state.mode = TYPE$2;
+            break;
+          case DICTID$1:
+            //=== NEEDBITS(32); */
+            while (bits < 32) {
+              if (have === 0) { break inf_leave; }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            //===//
+            strm.adler = state.check = zswap32$1(hold);
+            //=== INITBITS();
+            hold = 0;
+            bits = 0;
+            //===//
+            state.mode = DICT$1;
+            /* falls through */
+          case DICT$1:
+            if (state.havedict === 0) {
+              //--- RESTORE() ---
+              strm.next_out = put;
+              strm.avail_out = left;
+              strm.next_in = next;
+              strm.avail_in = have;
+              state.hold = hold;
+              state.bits = bits;
+              //---
+              return Z_NEED_DICT$1$1;
+            }
+            strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;
+            state.mode = TYPE$2;
+            /* falls through */
+          case TYPE$2:
+            if (flush === Z_BLOCK$2 || flush === Z_TREES$1) { break inf_leave; }
+            /* falls through */
+          case TYPEDO$1:
+            if (state.last) {
+              //--- BYTEBITS() ---//
+              hold >>>= bits & 7;
+              bits -= bits & 7;
+              //---//
+              state.mode = CHECK$1;
+              break;
+            }
+            //=== NEEDBITS(3); */
+            while (bits < 3) {
+              if (have === 0) { break inf_leave; }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            //===//
+            state.last = (hold & 0x01)/*BITS(1)*/;
+            //--- DROPBITS(1) ---//
+            hold >>>= 1;
+            bits -= 1;
+            //---//
+
+            switch ((hold & 0x03)/*BITS(2)*/) {
+              case 0:                             /* stored block */
+                //Tracev((stderr, "inflate:     stored block%s\n",
+                //        state.last ? " (last)" : ""));
+                state.mode = STORED$1;
+                break;
+              case 1:                             /* fixed block */
+                fixedtables$1(state);
+                //Tracev((stderr, "inflate:     fixed codes block%s\n",
+                //        state.last ? " (last)" : ""));
+                state.mode = LEN_$1;             /* decode codes */
+                if (flush === Z_TREES$1) {
+                  //--- DROPBITS(2) ---//
+                  hold >>>= 2;
+                  bits -= 2;
+                  //---//
+                  break inf_leave;
+                }
+                break;
+              case 2:                             /* dynamic block */
+                //Tracev((stderr, "inflate:     dynamic codes block%s\n",
+                //        state.last ? " (last)" : ""));
+                state.mode = TABLE$1;
+                break;
+              case 3:
+                strm.msg = 'invalid block type';
+                state.mode = BAD$2;
+            }
+            //--- DROPBITS(2) ---//
+            hold >>>= 2;
+            bits -= 2;
+            //---//
+            break;
+          case STORED$1:
+            //--- BYTEBITS() ---// /* go to byte boundary */
+            hold >>>= bits & 7;
+            bits -= bits & 7;
+            //---//
+            //=== NEEDBITS(32); */
+            while (bits < 32) {
+              if (have === 0) { break inf_leave; }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            //===//
+            if ((hold & 0xffff) !== ((hold >>> 16) ^ 0xffff)) {
+              strm.msg = 'invalid stored block lengths';
+              state.mode = BAD$2;
+              break;
+            }
+            state.length = hold & 0xffff;
+            //Tracev((stderr, "inflate:       stored length %u\n",
+            //        state.length));
+            //=== INITBITS();
+            hold = 0;
+            bits = 0;
+            //===//
+            state.mode = COPY_$1;
+            if (flush === Z_TREES$1) { break inf_leave; }
+            /* falls through */
+          case COPY_$1:
+            state.mode = COPY$1;
+            /* falls through */
+          case COPY$1:
+            copy = state.length;
+            if (copy) {
+              if (copy > have) { copy = have; }
+              if (copy > left) { copy = left; }
+              if (copy === 0) { break inf_leave; }
+              //--- zmemcpy(put, next, copy); ---
+              output.set(input.subarray(next, next + copy), put);
+              //---//
+              have -= copy;
+              next += copy;
+              left -= copy;
+              put += copy;
+              state.length -= copy;
+              break;
+            }
+            //Tracev((stderr, "inflate:       stored end\n"));
+            state.mode = TYPE$2;
+            break;
+          case TABLE$1:
+            //=== NEEDBITS(14); */
+            while (bits < 14) {
+              if (have === 0) { break inf_leave; }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+            }
+            //===//
+            state.nlen = (hold & 0x1f)/*BITS(5)*/ + 257;
+            //--- DROPBITS(5) ---//
+            hold >>>= 5;
+            bits -= 5;
+            //---//
+            state.ndist = (hold & 0x1f)/*BITS(5)*/ + 1;
+            //--- DROPBITS(5) ---//
+            hold >>>= 5;
+            bits -= 5;
+            //---//
+            state.ncode = (hold & 0x0f)/*BITS(4)*/ + 4;
+            //--- DROPBITS(4) ---//
+            hold >>>= 4;
+            bits -= 4;
+            //---//
+    //#ifndef PKZIP_BUG_WORKAROUND
+            if (state.nlen > 286 || state.ndist > 30) {
+              strm.msg = 'too many length or distance symbols';
+              state.mode = BAD$2;
+              break;
+            }
+    //#endif
+            //Tracev((stderr, "inflate:       table sizes ok\n"));
+            state.have = 0;
+            state.mode = LENLENS$1;
+            /* falls through */
+          case LENLENS$1:
+            while (state.have < state.ncode) {
+              //=== NEEDBITS(3);
+              while (bits < 3) {
+                if (have === 0) { break inf_leave; }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              //===//
+              state.lens[order[state.have++]] = (hold & 0x07);//BITS(3);
+              //--- DROPBITS(3) ---//
+              hold >>>= 3;
+              bits -= 3;
+              //---//
+            }
+            while (state.have < 19) {
+              state.lens[order[state.have++]] = 0;
+            }
+            // We have separate tables & no pointers. 2 commented lines below not needed.
+            //state.next = state.codes;
+            //state.lencode = state.next;
+            // Switch to use dynamic table
+            state.lencode = state.lendyn;
+            state.lenbits = 7;
+
+            opts = { bits: state.lenbits };
+            ret = inftrees$1(CODES$2, state.lens, 0, 19, state.lencode, 0, state.work, opts);
+            state.lenbits = opts.bits;
+
+            if (ret) {
+              strm.msg = 'invalid code lengths set';
+              state.mode = BAD$2;
+              break;
+            }
+            //Tracev((stderr, "inflate:       code lengths ok\n"));
+            state.have = 0;
+            state.mode = CODELENS$1;
+            /* falls through */
+          case CODELENS$1:
+            while (state.have < state.nlen + state.ndist) {
+              for (;;) {
+                here = state.lencode[hold & ((1 << state.lenbits) - 1)];/*BITS(state.lenbits)*/
+                here_bits = here >>> 24;
+                here_op = (here >>> 16) & 0xff;
+                here_val = here & 0xffff;
+
+                if ((here_bits) <= bits) { break; }
+                //--- PULLBYTE() ---//
+                if (have === 0) { break inf_leave; }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+                //---//
+              }
+              if (here_val < 16) {
+                //--- DROPBITS(here.bits) ---//
+                hold >>>= here_bits;
+                bits -= here_bits;
+                //---//
+                state.lens[state.have++] = here_val;
+              }
+              else {
+                if (here_val === 16) {
+                  //=== NEEDBITS(here.bits + 2);
+                  n = here_bits + 2;
+                  while (bits < n) {
+                    if (have === 0) { break inf_leave; }
+                    have--;
+                    hold += input[next++] << bits;
+                    bits += 8;
+                  }
+                  //===//
+                  //--- DROPBITS(here.bits) ---//
+                  hold >>>= here_bits;
+                  bits -= here_bits;
+                  //---//
+                  if (state.have === 0) {
+                    strm.msg = 'invalid bit length repeat';
+                    state.mode = BAD$2;
+                    break;
+                  }
+                  len = state.lens[state.have - 1];
+                  copy = 3 + (hold & 0x03);//BITS(2);
+                  //--- DROPBITS(2) ---//
+                  hold >>>= 2;
+                  bits -= 2;
+                  //---//
+                }
+                else if (here_val === 17) {
+                  //=== NEEDBITS(here.bits + 3);
+                  n = here_bits + 3;
+                  while (bits < n) {
+                    if (have === 0) { break inf_leave; }
+                    have--;
+                    hold += input[next++] << bits;
+                    bits += 8;
+                  }
+                  //===//
+                  //--- DROPBITS(here.bits) ---//
+                  hold >>>= here_bits;
+                  bits -= here_bits;
+                  //---//
+                  len = 0;
+                  copy = 3 + (hold & 0x07);//BITS(3);
+                  //--- DROPBITS(3) ---//
+                  hold >>>= 3;
+                  bits -= 3;
+                  //---//
+                }
+                else {
+                  //=== NEEDBITS(here.bits + 7);
+                  n = here_bits + 7;
+                  while (bits < n) {
+                    if (have === 0) { break inf_leave; }
+                    have--;
+                    hold += input[next++] << bits;
+                    bits += 8;
+                  }
+                  //===//
+                  //--- DROPBITS(here.bits) ---//
+                  hold >>>= here_bits;
+                  bits -= here_bits;
+                  //---//
+                  len = 0;
+                  copy = 11 + (hold & 0x7f);//BITS(7);
+                  //--- DROPBITS(7) ---//
+                  hold >>>= 7;
+                  bits -= 7;
+                  //---//
+                }
+                if (state.have + copy > state.nlen + state.ndist) {
+                  strm.msg = 'invalid bit length repeat';
+                  state.mode = BAD$2;
+                  break;
+                }
+                while (copy--) {
+                  state.lens[state.have++] = len;
+                }
+              }
+            }
+
+            /* handle error breaks in while */
+            if (state.mode === BAD$2) { break; }
+
+            /* check for end-of-block code (better have one) */
+            if (state.lens[256] === 0) {
+              strm.msg = 'invalid code -- missing end-of-block';
+              state.mode = BAD$2;
+              break;
+            }
+
+            /* build code tables -- note: do not change the lenbits or distbits
+               values here (9 and 6) without reading the comments in inftrees.h
+               concerning the ENOUGH constants, which depend on those values */
+            state.lenbits = 9;
+
+            opts = { bits: state.lenbits };
+            ret = inftrees$1(LENS$2, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts);
+            // We have separate tables & no pointers. 2 commented lines below not needed.
+            // state.next_index = opts.table_index;
+            state.lenbits = opts.bits;
+            // state.lencode = state.next;
+
+            if (ret) {
+              strm.msg = 'invalid literal/lengths set';
+              state.mode = BAD$2;
+              break;
+            }
+
+            state.distbits = 6;
+            //state.distcode.copy(state.codes);
+            // Switch to use dynamic table
+            state.distcode = state.distdyn;
+            opts = { bits: state.distbits };
+            ret = inftrees$1(DISTS$2, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts);
+            // We have separate tables & no pointers. 2 commented lines below not needed.
+            // state.next_index = opts.table_index;
+            state.distbits = opts.bits;
+            // state.distcode = state.next;
+
+            if (ret) {
+              strm.msg = 'invalid distances set';
+              state.mode = BAD$2;
+              break;
+            }
+            //Tracev((stderr, 'inflate:       codes ok\n'));
+            state.mode = LEN_$1;
+            if (flush === Z_TREES$1) { break inf_leave; }
+            /* falls through */
+          case LEN_$1:
+            state.mode = LEN$1;
+            /* falls through */
+          case LEN$1:
+            if (have >= 6 && left >= 258) {
+              //--- RESTORE() ---
+              strm.next_out = put;
+              strm.avail_out = left;
+              strm.next_in = next;
+              strm.avail_in = have;
+              state.hold = hold;
+              state.bits = bits;
+              //---
+              inffast$1(strm, _out);
+              //--- LOAD() ---
+              put = strm.next_out;
+              output = strm.output;
+              left = strm.avail_out;
+              next = strm.next_in;
+              input = strm.input;
+              have = strm.avail_in;
+              hold = state.hold;
+              bits = state.bits;
+              //---
+
+              if (state.mode === TYPE$2) {
+                state.back = -1;
+              }
+              break;
+            }
+            state.back = 0;
+            for (;;) {
+              here = state.lencode[hold & ((1 << state.lenbits) - 1)];  /*BITS(state.lenbits)*/
+              here_bits = here >>> 24;
+              here_op = (here >>> 16) & 0xff;
+              here_val = here & 0xffff;
+
+              if (here_bits <= bits) { break; }
+              //--- PULLBYTE() ---//
+              if (have === 0) { break inf_leave; }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+              //---//
+            }
+            if (here_op && (here_op & 0xf0) === 0) {
+              last_bits = here_bits;
+              last_op = here_op;
+              last_val = here_val;
+              for (;;) {
+                here = state.lencode[last_val +
+                        ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];
+                here_bits = here >>> 24;
+                here_op = (here >>> 16) & 0xff;
+                here_val = here & 0xffff;
+
+                if ((last_bits + here_bits) <= bits) { break; }
+                //--- PULLBYTE() ---//
+                if (have === 0) { break inf_leave; }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+                //---//
+              }
+              //--- DROPBITS(last.bits) ---//
+              hold >>>= last_bits;
+              bits -= last_bits;
+              //---//
+              state.back += last_bits;
+            }
+            //--- DROPBITS(here.bits) ---//
+            hold >>>= here_bits;
+            bits -= here_bits;
+            //---//
+            state.back += here_bits;
+            state.length = here_val;
+            if (here_op === 0) {
+              //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
+              //        "inflate:         literal '%c'\n" :
+              //        "inflate:         literal 0x%02x\n", here.val));
+              state.mode = LIT$1;
+              break;
+            }
+            if (here_op & 32) {
+              //Tracevv((stderr, "inflate:         end of block\n"));
+              state.back = -1;
+              state.mode = TYPE$2;
+              break;
+            }
+            if (here_op & 64) {
+              strm.msg = 'invalid literal/length code';
+              state.mode = BAD$2;
+              break;
+            }
+            state.extra = here_op & 15;
+            state.mode = LENEXT$1;
+            /* falls through */
+          case LENEXT$1:
+            if (state.extra) {
+              //=== NEEDBITS(state.extra);
+              n = state.extra;
+              while (bits < n) {
+                if (have === 0) { break inf_leave; }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              //===//
+              state.length += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;
+              //--- DROPBITS(state.extra) ---//
+              hold >>>= state.extra;
+              bits -= state.extra;
+              //---//
+              state.back += state.extra;
+            }
+            //Tracevv((stderr, "inflate:         length %u\n", state.length));
+            state.was = state.length;
+            state.mode = DIST$1;
+            /* falls through */
+          case DIST$1:
+            for (;;) {
+              here = state.distcode[hold & ((1 << state.distbits) - 1)];/*BITS(state.distbits)*/
+              here_bits = here >>> 24;
+              here_op = (here >>> 16) & 0xff;
+              here_val = here & 0xffff;
+
+              if ((here_bits) <= bits) { break; }
+              //--- PULLBYTE() ---//
+              if (have === 0) { break inf_leave; }
+              have--;
+              hold += input[next++] << bits;
+              bits += 8;
+              //---//
+            }
+            if ((here_op & 0xf0) === 0) {
+              last_bits = here_bits;
+              last_op = here_op;
+              last_val = here_val;
+              for (;;) {
+                here = state.distcode[last_val +
+                        ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];
+                here_bits = here >>> 24;
+                here_op = (here >>> 16) & 0xff;
+                here_val = here & 0xffff;
+
+                if ((last_bits + here_bits) <= bits) { break; }
+                //--- PULLBYTE() ---//
+                if (have === 0) { break inf_leave; }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+                //---//
+              }
+              //--- DROPBITS(last.bits) ---//
+              hold >>>= last_bits;
+              bits -= last_bits;
+              //---//
+              state.back += last_bits;
+            }
+            //--- DROPBITS(here.bits) ---//
+            hold >>>= here_bits;
+            bits -= here_bits;
+            //---//
+            state.back += here_bits;
+            if (here_op & 64) {
+              strm.msg = 'invalid distance code';
+              state.mode = BAD$2;
+              break;
+            }
+            state.offset = here_val;
+            state.extra = (here_op) & 15;
+            state.mode = DISTEXT$1;
+            /* falls through */
+          case DISTEXT$1:
+            if (state.extra) {
+              //=== NEEDBITS(state.extra);
+              n = state.extra;
+              while (bits < n) {
+                if (have === 0) { break inf_leave; }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              //===//
+              state.offset += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;
+              //--- DROPBITS(state.extra) ---//
+              hold >>>= state.extra;
+              bits -= state.extra;
+              //---//
+              state.back += state.extra;
+            }
+    //#ifdef INFLATE_STRICT
+            if (state.offset > state.dmax) {
+              strm.msg = 'invalid distance too far back';
+              state.mode = BAD$2;
+              break;
+            }
+    //#endif
+            //Tracevv((stderr, "inflate:         distance %u\n", state.offset));
+            state.mode = MATCH$1;
+            /* falls through */
+          case MATCH$1:
+            if (left === 0) { break inf_leave; }
+            copy = _out - left;
+            if (state.offset > copy) {         /* copy from window */
+              copy = state.offset - copy;
+              if (copy > state.whave) {
+                if (state.sane) {
+                  strm.msg = 'invalid distance too far back';
+                  state.mode = BAD$2;
+                  break;
+                }
+    // (!) This block is disabled in zlib defaults,
+    // don't enable it for binary compatibility
+    //#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
+    //          Trace((stderr, "inflate.c too far\n"));
+    //          copy -= state.whave;
+    //          if (copy > state.length) { copy = state.length; }
+    //          if (copy > left) { copy = left; }
+    //          left -= copy;
+    //          state.length -= copy;
+    //          do {
+    //            output[put++] = 0;
+    //          } while (--copy);
+    //          if (state.length === 0) { state.mode = LEN; }
+    //          break;
+    //#endif
+              }
+              if (copy > state.wnext) {
+                copy -= state.wnext;
+                from = state.wsize - copy;
+              }
+              else {
+                from = state.wnext - copy;
+              }
+              if (copy > state.length) { copy = state.length; }
+              from_source = state.window;
+            }
+            else {                              /* copy from output */
+              from_source = output;
+              from = put - state.offset;
+              copy = state.length;
+            }
+            if (copy > left) { copy = left; }
+            left -= copy;
+            state.length -= copy;
+            do {
+              output[put++] = from_source[from++];
+            } while (--copy);
+            if (state.length === 0) { state.mode = LEN$1; }
+            break;
+          case LIT$1:
+            if (left === 0) { break inf_leave; }
+            output[put++] = state.length;
+            left--;
+            state.mode = LEN$1;
+            break;
+          case CHECK$1:
+            if (state.wrap) {
+              //=== NEEDBITS(32);
+              while (bits < 32) {
+                if (have === 0) { break inf_leave; }
+                have--;
+                // Use '|' instead of '+' to make sure that result is signed
+                hold |= input[next++] << bits;
+                bits += 8;
+              }
+              //===//
+              _out -= left;
+              strm.total_out += _out;
+              state.total += _out;
+              if ((state.wrap & 4) && _out) {
+                strm.adler = state.check =
+                    /*UPDATE_CHECK(state.check, put - _out, _out);*/
+                    (state.flags ? crc32_1$1(state.check, output, _out, put - _out) : adler32_1$1(state.check, output, _out, put - _out));
+
+              }
+              _out = left;
+              // NB: crc32 stored as signed 32-bit int, zswap32 returns signed too
+              if ((state.wrap & 4) && (state.flags ? hold : zswap32$1(hold)) !== state.check) {
+                strm.msg = 'incorrect data check';
+                state.mode = BAD$2;
+                break;
+              }
+              //=== INITBITS();
+              hold = 0;
+              bits = 0;
+              //===//
+              //Tracev((stderr, "inflate:   check matches trailer\n"));
+            }
+            state.mode = LENGTH$1;
+            /* falls through */
+          case LENGTH$1:
+            if (state.wrap && state.flags) {
+              //=== NEEDBITS(32);
+              while (bits < 32) {
+                if (have === 0) { break inf_leave; }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              //===//
+              if ((state.wrap & 4) && hold !== (state.total & 0xffffffff)) {
+                strm.msg = 'incorrect length check';
+                state.mode = BAD$2;
+                break;
+              }
+              //=== INITBITS();
+              hold = 0;
+              bits = 0;
+              //===//
+              //Tracev((stderr, "inflate:   length matches trailer\n"));
+            }
+            state.mode = DONE$1;
+            /* falls through */
+          case DONE$1:
+            ret = Z_STREAM_END$1$1;
+            break inf_leave;
+          case BAD$2:
+            ret = Z_DATA_ERROR$1$1;
+            break inf_leave;
+          case MEM$1:
+            return Z_MEM_ERROR$1$1;
+          case SYNC$1:
+            /* falls through */
+          default:
+            return Z_STREAM_ERROR$1$1;
+        }
+      }
+
+      // inf_leave <- here is real place for "goto inf_leave", emulated via "break inf_leave"
+
+      /*
+         Return from inflate(), updating the total counts and the check value.
+         If there was no progress during the inflate() call, return a buffer
+         error.  Call updatewindow() to create and/or update the window state.
+         Note: a memory error from inflate() is non-recoverable.
+       */
+
+      //--- RESTORE() ---
+      strm.next_out = put;
+      strm.avail_out = left;
+      strm.next_in = next;
+      strm.avail_in = have;
+      state.hold = hold;
+      state.bits = bits;
+      //---
+
+      if (state.wsize || (_out !== strm.avail_out && state.mode < BAD$2 &&
+                          (state.mode < CHECK$1 || flush !== Z_FINISH$1$1))) {
+        if (updatewindow$1(strm, strm.output, strm.next_out, _out - strm.avail_out)) ;
+      }
+      _in -= strm.avail_in;
+      _out -= strm.avail_out;
+      strm.total_in += _in;
+      strm.total_out += _out;
+      state.total += _out;
+      if ((state.wrap & 4) && _out) {
+        strm.adler = state.check = /*UPDATE_CHECK(state.check, strm.next_out - _out, _out);*/
+          (state.flags ? crc32_1$1(state.check, output, _out, strm.next_out - _out) : adler32_1$1(state.check, output, _out, strm.next_out - _out));
+      }
+      strm.data_type = state.bits + (state.last ? 64 : 0) +
+                        (state.mode === TYPE$2 ? 128 : 0) +
+                        (state.mode === LEN_$1 || state.mode === COPY_$1 ? 256 : 0);
+      if (((_in === 0 && _out === 0) || flush === Z_FINISH$1$1) && ret === Z_OK$1$1) {
+        ret = Z_BUF_ERROR$2;
+      }
+      return ret;
+    };
+
+
+    const inflateEnd$1 = (strm) => {
+
+      if (inflateStateCheck(strm)) {
+        return Z_STREAM_ERROR$1$1;
+      }
+
+      let state = strm.state;
+      if (state.window) {
+        state.window = null;
+      }
+      strm.state = null;
+      return Z_OK$1$1;
+    };
+
+
+    const inflateGetHeader$1 = (strm, head) => {
+
+      /* check state */
+      if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1$1; }
+      const state = strm.state;
+      if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR$1$1; }
+
+      /* save header structure */
+      state.head = head;
+      head.done = false;
+      return Z_OK$1$1;
+    };
+
+
+    const inflateSetDictionary$1 = (strm, dictionary) => {
+      const dictLength = dictionary.length;
+
+      let state;
+      let dictid;
+      let ret;
+
+      /* check state */
+      if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1$1; }
+      state = strm.state;
+
+      if (state.wrap !== 0 && state.mode !== DICT$1) {
+        return Z_STREAM_ERROR$1$1;
+      }
+
+      /* check for correct dictionary identifier */
+      if (state.mode === DICT$1) {
+        dictid = 1; /* adler32(0, null, 0)*/
+        /* dictid = adler32(dictid, dictionary, dictLength); */
+        dictid = adler32_1$1(dictid, dictionary, dictLength, 0);
+        if (dictid !== state.check) {
+          return Z_DATA_ERROR$1$1;
+        }
+      }
+      /* copy dictionary to window using updatewindow(), which will amend the
+       existing dictionary if appropriate */
+      ret = updatewindow$1(strm, dictionary, dictLength, dictLength);
+      if (ret) {
+        state.mode = MEM$1;
+        return Z_MEM_ERROR$1$1;
+      }
+      state.havedict = 1;
+      // Tracev((stderr, "inflate:   dictionary set\n"));
+      return Z_OK$1$1;
+    };
+
+
+    var inflateReset_1$1 = inflateReset$1;
+    var inflateReset2_1$1 = inflateReset2$1;
+    var inflateResetKeep_1$1 = inflateResetKeep$1;
+    var inflateInit_1$1 = inflateInit$1;
+    var inflateInit2_1$1 = inflateInit2$1;
+    var inflate_2$1$1 = inflate$2$1;
+    var inflateEnd_1$1 = inflateEnd$1;
+    var inflateGetHeader_1$1 = inflateGetHeader$1;
+    var inflateSetDictionary_1$1 = inflateSetDictionary$1;
+    var inflateInfo$1 = 'pako inflate (from Nodeca project)';
+
+    /* Not implemented
+    module.exports.inflateCodesUsed = inflateCodesUsed;
+    module.exports.inflateCopy = inflateCopy;
+    module.exports.inflateGetDictionary = inflateGetDictionary;
+    module.exports.inflateMark = inflateMark;
+    module.exports.inflatePrime = inflatePrime;
+    module.exports.inflateSync = inflateSync;
+    module.exports.inflateSyncPoint = inflateSyncPoint;
+    module.exports.inflateUndermine = inflateUndermine;
+    module.exports.inflateValidate = inflateValidate;
+    */
+
+    var inflate_1$2$1 = {
+    	inflateReset: inflateReset_1$1,
+    	inflateReset2: inflateReset2_1$1,
+    	inflateResetKeep: inflateResetKeep_1$1,
+    	inflateInit: inflateInit_1$1,
+    	inflateInit2: inflateInit2_1$1,
+    	inflate: inflate_2$1$1,
+    	inflateEnd: inflateEnd_1$1,
+    	inflateGetHeader: inflateGetHeader_1$1,
+    	inflateSetDictionary: inflateSetDictionary_1$1,
+    	inflateInfo: inflateInfo$1
+    };
+
+    // (C) 1995-2013 Jean-loup Gailly and Mark Adler
+    // (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin
+    //
+    // This software is provided 'as-is', without any express or implied
+    // warranty. In no event will the authors be held liable for any damages
+    // arising from the use of this software.
+    //
+    // Permission is granted to anyone to use this software for any purpose,
+    // including commercial applications, and to alter it and redistribute it
+    // freely, subject to the following restrictions:
+    //
+    // 1. The origin of this software must not be misrepresented; you must not
+    //   claim that you wrote the original software. If you use this software
+    //   in a product, an acknowledgment in the product documentation would be
+    //   appreciated but is not required.
+    // 2. Altered source versions must be plainly marked as such, and must not be
+    //   misrepresented as being the original software.
+    // 3. This notice may not be removed or altered from any source distribution.
+
+    function GZheader$1() {
+      /* true if compressed data believed to be text */
+      this.text       = 0;
+      /* modification time */
+      this.time       = 0;
+      /* extra flags (not used when writing a gzip file) */
+      this.xflags     = 0;
+      /* operating system */
+      this.os         = 0;
+      /* pointer to extra field or Z_NULL if none */
+      this.extra      = null;
+      /* extra field length (valid if extra != Z_NULL) */
+      this.extra_len  = 0; // Actually, we don't need it in JS,
+                           // but leave for few code modifications
+
+      //
+      // Setup limits is not necessary because in js we should not preallocate memory
+      // for inflate use constant limit in 65536 bytes
+      //
+
+      /* space at extra (only when reading header) */
+      // this.extra_max  = 0;
+      /* pointer to zero-terminated file name or Z_NULL */
+      this.name       = '';
+      /* space at name (only when reading header) */
+      // this.name_max   = 0;
+      /* pointer to zero-terminated comment or Z_NULL */
+      this.comment    = '';
+      /* space at comment (only when reading header) */
+      // this.comm_max   = 0;
+      /* true if there was or will be a header crc */
+      this.hcrc       = 0;
+      /* true when done reading gzip header (not used when writing a gzip file) */
+      this.done       = false;
+    }
+
+    var gzheader$1 = GZheader$1;
+
+    const toString$2 = Object.prototype.toString;
+
+    /* Public constants ==========================================================*/
+    /* ===========================================================================*/
+
+    const {
+      Z_NO_FLUSH: Z_NO_FLUSH$3, Z_FINISH: Z_FINISH$4,
+      Z_OK: Z_OK$4, Z_STREAM_END: Z_STREAM_END$4, Z_NEED_DICT: Z_NEED_DICT$2, Z_STREAM_ERROR: Z_STREAM_ERROR$3, Z_DATA_ERROR: Z_DATA_ERROR$3, Z_MEM_ERROR: Z_MEM_ERROR$2
+    } = constants$2$1;
+
+    /* ===========================================================================*/
+
+
+    /**
+     * class Inflate
+     *
+     * Generic JS-style wrapper for zlib calls. If you don't need
+     * streaming behaviour - use more simple functions: [[inflate]]
+     * and [[inflateRaw]].
+     **/
+
+    /* internal
+     * inflate.chunks -> Array
+     *
+     * Chunks of output data, if [[Inflate#onData]] not overridden.
+     **/
+
+    /**
+     * Inflate.result -> Uint8Array|String
+     *
+     * Uncompressed result, generated by default [[Inflate#onData]]
+     * and [[Inflate#onEnd]] handlers. Filled after you push last chunk
+     * (call [[Inflate#push]] with `Z_FINISH` / `true` param).
+     **/
+
+    /**
+     * Inflate.err -> Number
+     *
+     * Error code after inflate finished. 0 (Z_OK) on success.
+     * Should be checked if broken data possible.
+     **/
+
+    /**
+     * Inflate.msg -> String
+     *
+     * Error message, if [[Inflate.err]] != 0
+     **/
+
+
+    /**
+     * new Inflate(options)
+     * - options (Object): zlib inflate options.
+     *
+     * Creates new inflator instance with specified params. Throws exception
+     * on bad params. Supported options:
+     *
+     * - `windowBits`
+     * - `dictionary`
+     *
+     * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
+     * for more information on these.
+     *
+     * Additional options, for internal needs:
+     *
+     * - `chunkSize` - size of generated data chunks (16K by default)
+     * - `raw` (Boolean) - do raw inflate
+     * - `to` (String) - if equal to 'string', then result will be converted
+     *   from utf8 to utf16 (javascript) string. When string output requested,
+     *   chunk length can differ from `chunkSize`, depending on content.
+     *
+     * By default, when no options set, autodetect deflate/gzip data format via
+     * wrapper header.
+     *
+     * ##### Example:
+     *
+     * ```javascript
+     * const pako = require('pako')
+     * const chunk1 = new Uint8Array([1,2,3,4,5,6,7,8,9])
+     * const chunk2 = new Uint8Array([10,11,12,13,14,15,16,17,18,19]);
+     *
+     * const inflate = new pako.Inflate({ level: 3});
+     *
+     * inflate.push(chunk1, false);
+     * inflate.push(chunk2, true);  // true -> last chunk
+     *
+     * if (inflate.err) { throw new Error(inflate.err); }
+     *
+     * console.log(inflate.result);
+     * ```
+     **/
+    function Inflate$1$1(options) {
+      this.options = common$1.assign({
+        chunkSize: 1024 * 64,
+        windowBits: 15,
+        to: ''
+      }, options || {});
+
+      const opt = this.options;
+
+      // Force window size for `raw` data, if not set directly,
+      // because we have no header for autodetect.
+      if (opt.raw && (opt.windowBits >= 0) && (opt.windowBits < 16)) {
+        opt.windowBits = -opt.windowBits;
+        if (opt.windowBits === 0) { opt.windowBits = -15; }
+      }
+
+      // If `windowBits` not defined (and mode not raw) - set autodetect flag for gzip/deflate
+      if ((opt.windowBits >= 0) && (opt.windowBits < 16) &&
+          !(options && options.windowBits)) {
+        opt.windowBits += 32;
+      }
+
+      // Gzip header has no info about windows size, we can do autodetect only
+      // for deflate. So, if window size not set, force it to max when gzip possible
+      if ((opt.windowBits > 15) && (opt.windowBits < 48)) {
+        // bit 3 (16) -> gzipped data
+        // bit 4 (32) -> autodetect gzip/deflate
+        if ((opt.windowBits & 15) === 0) {
+          opt.windowBits |= 15;
+        }
+      }
+
+      this.err    = 0;      // error code, if happens (0 = Z_OK)
+      this.msg    = '';     // error message
+      this.ended  = false;  // used to avoid multiple onEnd() calls
+      this.chunks = [];     // chunks of compressed data
+
+      this.strm   = new zstream$1();
+      this.strm.avail_out = 0;
+
+      let status  = inflate_1$2$1.inflateInit2(
+        this.strm,
+        opt.windowBits
+      );
+
+      if (status !== Z_OK$4) {
+        throw new Error(messages$1[status]);
+      }
+
+      this.header = new gzheader$1();
+
+      inflate_1$2$1.inflateGetHeader(this.strm, this.header);
+
+      // Setup dictionary
+      if (opt.dictionary) {
+        // Convert data if needed
+        if (typeof opt.dictionary === 'string') {
+          opt.dictionary = strings$1.string2buf(opt.dictionary);
+        } else if (toString$2.call(opt.dictionary) === '[object ArrayBuffer]') {
+          opt.dictionary = new Uint8Array(opt.dictionary);
+        }
+        if (opt.raw) { //In raw mode we need to set the dictionary early
+          status = inflate_1$2$1.inflateSetDictionary(this.strm, opt.dictionary);
+          if (status !== Z_OK$4) {
+            throw new Error(messages$1[status]);
+          }
+        }
+      }
+    }
+
+    /**
+     * Inflate#push(data[, flush_mode]) -> Boolean
+     * - data (Uint8Array|ArrayBuffer): input data
+     * - flush_mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE
+     *   flush modes. See constants. Skipped or `false` means Z_NO_FLUSH,
+     *   `true` means Z_FINISH.
+     *
+     * Sends input data to inflate pipe, generating [[Inflate#onData]] calls with
+     * new output chunks. Returns `true` on success. If end of stream detected,
+     * [[Inflate#onEnd]] will be called.
+     *
+     * `flush_mode` is not needed for normal operation, because end of stream
+     * detected automatically. You may try to use it for advanced things, but
+     * this functionality was not tested.
+     *
+     * On fail call [[Inflate#onEnd]] with error code and return false.
+     *
+     * ##### Example
+     *
+     * ```javascript
+     * push(chunk, false); // push one of data chunks
+     * ...
+     * push(chunk, true);  // push last chunk
+     * ```
+     **/
+    Inflate$1$1.prototype.push = function (data, flush_mode) {
+      const strm = this.strm;
+      const chunkSize = this.options.chunkSize;
+      const dictionary = this.options.dictionary;
+      let status, _flush_mode, last_avail_out;
+
+      if (this.ended) return false;
+
+      if (flush_mode === ~~flush_mode) _flush_mode = flush_mode;
+      else _flush_mode = flush_mode === true ? Z_FINISH$4 : Z_NO_FLUSH$3;
+
+      // Convert data if needed
+      if (toString$2.call(data) === '[object ArrayBuffer]') {
+        strm.input = new Uint8Array(data);
+      } else {
+        strm.input = data;
+      }
+
+      strm.next_in = 0;
+      strm.avail_in = strm.input.length;
+
+      for (;;) {
+        if (strm.avail_out === 0) {
+          strm.output = new Uint8Array(chunkSize);
+          strm.next_out = 0;
+          strm.avail_out = chunkSize;
+        }
+
+        status = inflate_1$2$1.inflate(strm, _flush_mode);
+
+        if (status === Z_NEED_DICT$2 && dictionary) {
+          status = inflate_1$2$1.inflateSetDictionary(strm, dictionary);
+
+          if (status === Z_OK$4) {
+            status = inflate_1$2$1.inflate(strm, _flush_mode);
+          } else if (status === Z_DATA_ERROR$3) {
+            // Replace code with more verbose
+            status = Z_NEED_DICT$2;
+          }
+        }
+
+        // Skip snyc markers if more data follows and not raw mode
+        while (strm.avail_in > 0 &&
+               status === Z_STREAM_END$4 &&
+               strm.state.wrap > 0 &&
+               data[strm.next_in] !== 0)
+        {
+          inflate_1$2$1.inflateReset(strm);
+          status = inflate_1$2$1.inflate(strm, _flush_mode);
+        }
+
+        switch (status) {
+          case Z_STREAM_ERROR$3:
+          case Z_DATA_ERROR$3:
+          case Z_NEED_DICT$2:
+          case Z_MEM_ERROR$2:
+            this.onEnd(status);
+            this.ended = true;
+            return false;
+        }
+
+        // Remember real `avail_out` value, because we may patch out buffer content
+        // to align utf8 strings boundaries.
+        last_avail_out = strm.avail_out;
+
+        if (strm.next_out) {
+          if (strm.avail_out === 0 || status === Z_STREAM_END$4) {
+
+            if (this.options.to === 'string') {
+
+              let next_out_utf8 = strings$1.utf8border(strm.output, strm.next_out);
+
+              let tail = strm.next_out - next_out_utf8;
+              let utf8str = strings$1.buf2string(strm.output, next_out_utf8);
+
+              // move tail & realign counters
+              strm.next_out = tail;
+              strm.avail_out = chunkSize - tail;
+              if (tail) strm.output.set(strm.output.subarray(next_out_utf8, next_out_utf8 + tail), 0);
+
+              this.onData(utf8str);
+
+            } else {
+              this.onData(strm.output.length === strm.next_out ? strm.output : strm.output.subarray(0, strm.next_out));
+            }
+          }
+        }
+
+        // Must repeat iteration if out buffer is full
+        if (status === Z_OK$4 && last_avail_out === 0) continue;
+
+        // Finalize if end of stream reached.
+        if (status === Z_STREAM_END$4) {
+          status = inflate_1$2$1.inflateEnd(this.strm);
+          this.onEnd(status);
+          this.ended = true;
+          return true;
+        }
+
+        if (strm.avail_in === 0) break;
+      }
+
+      return true;
+    };
+
+
+    /**
+     * Inflate#onData(chunk) -> Void
+     * - chunk (Uint8Array|String): output data. When string output requested,
+     *   each chunk will be string.
+     *
+     * By default, stores data blocks in `chunks[]` property and glue
+     * those in `onEnd`. Override this handler, if you need another behaviour.
+     **/
+    Inflate$1$1.prototype.onData = function (chunk) {
+      this.chunks.push(chunk);
+    };
+
+
+    /**
+     * Inflate#onEnd(status) -> Void
+     * - status (Number): inflate status. 0 (Z_OK) on success,
+     *   other if not.
+     *
+     * Called either after you tell inflate that the input stream is
+     * complete (Z_FINISH). By default - join collected chunks,
+     * free memory and fill `results` / `err` properties.
+     **/
+    Inflate$1$1.prototype.onEnd = function (status) {
+      // On success - join
+      if (status === Z_OK$4) {
+        if (this.options.to === 'string') {
+          this.result = this.chunks.join('');
+        } else {
+          this.result = common$1.flattenChunks(this.chunks);
+        }
+      }
+      this.chunks = [];
+      this.err = status;
+      this.msg = this.strm.msg;
+    };
+
+
+    /**
+     * inflate(data[, options]) -> Uint8Array|String
+     * - data (Uint8Array|ArrayBuffer): input data to decompress.
+     * - options (Object): zlib inflate options.
+     *
+     * Decompress `data` with inflate/ungzip and `options`. Autodetect
+     * format via wrapper header by default. That's why we don't provide
+     * separate `ungzip` method.
+     *
+     * Supported options are:
+     *
+     * - windowBits
+     *
+     * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)
+     * for more information.
+     *
+     * Sugar (options):
+     *
+     * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify
+     *   negative windowBits implicitly.
+     * - `to` (String) - if equal to 'string', then result will be converted
+     *   from utf8 to utf16 (javascript) string. When string output requested,
+     *   chunk length can differ from `chunkSize`, depending on content.
+     *
+     *
+     * ##### Example:
+     *
+     * ```javascript
+     * const pako = require('pako');
+     * const input = pako.deflate(new Uint8Array([1,2,3,4,5,6,7,8,9]));
+     * let output;
+     *
+     * try {
+     *   output = pako.inflate(input);
+     * } catch (err) {
+     *   console.log(err);
+     * }
+     * ```
+     **/
+    function inflate$1$1(input, options) {
+      const inflator = new Inflate$1$1(options);
+
+      inflator.push(input);
+
+      // That will never happens, if you don't cheat with options :)
+      if (inflator.err) throw inflator.msg || messages$1[inflator.err];
+
+      return inflator.result;
+    }
+
+
+    /**
+     * inflateRaw(data[, options]) -> Uint8Array|String
+     * - data (Uint8Array|ArrayBuffer): input data to decompress.
+     * - options (Object): zlib inflate options.
+     *
+     * The same as [[inflate]], but creates raw data, without wrapper
+     * (header and adler32 crc).
+     **/
+    function inflateRaw$1$1(input, options) {
+      options = options || {};
+      options.raw = true;
+      return inflate$1$1(input, options);
+    }
+
+
+    /**
+     * ungzip(data[, options]) -> Uint8Array|String
+     * - data (Uint8Array|ArrayBuffer): input data to decompress.
+     * - options (Object): zlib inflate options.
+     *
+     * Just shortcut to [[inflate]], because it autodetects format
+     * by header.content. Done for convenience.
+     **/
+
+
+    var Inflate_1$1$1 = Inflate$1$1;
+    var inflate_2$2 = inflate$1$1;
+    var inflateRaw_1$1$1 = inflateRaw$1$1;
+    var ungzip$1$1 = inflate$1$1;
+    var constants$3 = constants$2$1;
+
+    var inflate_1$1$1 = {
+    	Inflate: Inflate_1$1$1,
+    	inflate: inflate_2$2,
+    	inflateRaw: inflateRaw_1$1$1,
+    	ungzip: ungzip$1$1,
+    	constants: constants$3
+    };
+
+    const { Deflate, deflate, deflateRaw, gzip } = deflate_1$1;
+
+    const { Inflate: Inflate$2, inflate: inflate$3, inflateRaw: inflateRaw$2, ungzip: ungzip$2 } = inflate_1$1$1;
+    var deflateRaw_1 = deflateRaw;
+    var inflate_1$3 = inflate$3;
+    var inflateRaw_1 = inflateRaw$2;
+    var ungzip_1$1 = ungzip$2;
+
+    const FEXTRA = 4;  // gzip spec F.EXTRA flag
+
+    function isgzipped(data) {
+        const b = ArrayBuffer.isView(data) ? data : new Uint8Array(data);
+        return b[0] ===31 && b[1] === 139;
+    }
+
+    /**
+     * Pako does not properly ungzip block compressed files if > 1 block is present.  Test for bgzip and use wrapper.
+     */
+    function ungzip_blocks(data) {
+        const ba = ArrayBuffer.isView(data) ? data : new Uint8Array(data);
+        const b = ba[3] & FEXTRA;
+        if (b !== 0 && ba[12] === 66 && ba[13] === 67) {
+            return unbgzf(ba.buffer);
+        } else {
+            return ungzip_1$1(ba);
+        }
+    }
+
+    // Uncompress data,  assumed to be series of bgzipped blocks
+    function unbgzf(data, lim) {
+
+        const oBlockList = [];
+        let ptr = 0;
+        let totalSize = 0;
+
+        lim = lim || data.byteLength - 18;
+
+        while (ptr < lim) {
+            try {
+                const ba = ArrayBuffer.isView(data) ? data : new Uint8Array(data, ptr, 18);
+                const xlen = (ba[11] << 8) | (ba[10]);
+                const flg = ba[3];
+                const fextra = flg & FEXTRA;
+                const si1 = ba[12];
+                const si2 = ba[13];
+                const slen = (ba[15] << 8) | (ba[14]);
+                const bsize = ((ba[17] << 8) | (ba[16])) + 1;
+                const start = 12 + xlen + ptr;    // Start of CDATA
+                const bytesLeft = data.byteLength - start;
+                const cDataSize = bsize - xlen - 19;
+                if (bytesLeft < cDataSize || cDataSize <= 0) break;
+
+                const a = new Uint8Array(data, start, cDataSize);
+                const unc = inflateRaw_1(a);
+
+                // const inflate = new Zlib.RawInflate(a);
+                // const unc = inflate.decompress();
+
+                ptr += (cDataSize - 1) + 26; //inflate.ip + 26
+                totalSize += unc.byteLength;
+                oBlockList.push(unc);
+            } catch (e) {
+                console.error(e);
+                break;
+            }
+        }
+
+        // Concatenate decompressed blocks
+        if (oBlockList.length === 1) {
+            return oBlockList[0];
+        } else {
+            const out = new Uint8Array(totalSize);
+            let cursor = 0;
+            for (let i = 0; i < oBlockList.length; ++i) {
+                var b = new Uint8Array(oBlockList[i]);
+                arrayCopy(b, 0, out, cursor, b.length);
+                cursor += b.length;
+            }
+            return out;
+        }
+    }
+
+    function bgzBlockSize$1(data) {
+        const ba = ArrayBuffer.isView(data) ? data : new Uint8Array(data);
+        const bsize = (ba[17] << 8 | ba[16]) + 1;
+        return bsize;
+    }
+
+    // From Thomas Down's zlib implementation
+
+    const testArray = new Uint8Array(1);
+    const hasSubarray = (typeof testArray.subarray === 'function');
+
+    function arrayCopy(src, srcOffset, dest, destOffset, count) {
+        if (count === 0) {
+            return;
+        }
+        if (!src) {
+            throw "Undef src";
+        } else if (!dest) {
+            throw "Undef dest";
+        }
+        if (srcOffset === 0 && count === src.length) {
+            arrayCopy_fast(src, dest, destOffset);
+        } else if (hasSubarray) {
+            arrayCopy_fast(src.subarray(srcOffset, srcOffset + count), dest, destOffset);
+        } else if (src.BYTES_PER_ELEMENT === 1 && count > 100) {
+            arrayCopy_fast(new Uint8Array(src.buffer, src.byteOffset + srcOffset, count), dest, destOffset);
+        } else {
+            arrayCopy_slow(src, srcOffset, dest, destOffset, count);
+        }
+    }
+
+    function arrayCopy_slow(src, srcOffset, dest, destOffset, count) {
+        for (let i = 0; i < count; ++i) {
+            dest[destOffset + i] = src[srcOffset + i];
+        }
+    }
+
+    function arrayCopy_fast(src, dest, destOffset) {
+        dest.set(src, destOffset);
+    }
+
+
+    /**
+     * Compress string and encode in a url safe form
+     * @param s
+     */
+    function compressString(str) {
+
+        const bytes = new Uint8Array(str.length);
+        for (var i = 0; i < str.length; i++) {
+            bytes[i] = str.charCodeAt(i);
+        }
+        const compressedBytes = new deflateRaw_1(bytes);            // UInt8Arry
+        const compressedString = String.fromCharCode.apply(null, compressedBytes);      // Convert to string
+        let enc = btoa(compressedString);
+        return enc.replace(/\+/g, '.').replace(/\//g, '_').replace(/=/g, '-');   // URL safe
+    }
+
+    /**
+     * Uncompress the url-safe encoded compressed string, presumably created by compressString above
+     *
+     * @param enc
+     * @returns {string}
+     */
+    function uncompressString(enc) {
+
+        enc = enc.replace(/\./g, '+').replace(/_/g, '/').replace(/-/g, '=');
+
+        const compressedString = atob(enc);
+        const compressedBytes = [];
+        for (let i = 0; i < compressedString.length; i++) {
+            compressedBytes.push(compressedString.charCodeAt(i));
+        }
+        //const bytes = new Zlib.RawInflate(compressedBytes).decompress();
+        const bytes = inflateRaw_1(compressedBytes);
+
+        let str = '';
+        for (let b of bytes) {
+            str += String.fromCharCode(b);
+        }
+        return str;
+    }
+
+
+    /**
+     * @param dataURI
+     * @returns {Array<number>|Uint8Array}
+     */
+    function decodeDataURI$1(dataURI, gzip) {
+
+        const split = dataURI.split(',');
+        const info = split[0].split(':')[1];
+        let dataString = split[1];
+
+        if (info.indexOf('base64') >= 0) {
+            dataString = atob(dataString);
+
+            const bytes = new Uint8Array(dataString.length);
+            for (let i = 0; i < dataString.length; i++) {
+                bytes[i] = dataString.charCodeAt(i);
+            }
+
+            let plain;
+            if (gzip || info.indexOf('gzip') > 0) {
+                plain = ungzip_1$1(bytes);
+            } else {
+                plain = bytes;
+            }
+            return plain
+        } else {
+            return decodeURIComponent(dataString);      // URL encoded string -- not currently used or tested
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2017 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+    const IGVMath = {
+
+        lerp: (v0, v1, t) => {
+            return (1 - t) * v0 + t * v1;
+        },
+
+        mean: function (array) {
+
+            var t = 0, n = 0,
+                i;
+            for (i = 0; i < array.length; i++) {
+                if (!isNaN(array[i])) {
+                    t += array[i];
+                    n++;
+                }
+            }
+            return n > 0 ? t / n : 0;
+        },
+
+        meanAndStdev: function (array) {
+
+            var v, t = 0, t2 = 0, n = 0, i;
+
+            for (i = 0; i < array.length; i++) {
+
+                v = array[i];
+
+                if (!isNaN(v)) {
+                    t += v;
+                    t2 += v * v;
+                    n++;
+                }
+            }
+            return n > 0 ? {mean: t / n, stdev: Math.sqrt(t2 - t * t / n)} : {mean: 0, stdev: 0};
+        },
+
+        median: function (numbers) {
+            // median of [3, 5, 4, 4, 1, 1, 2, 3] = 3
+            var median = 0, numsLen = numbers.length;
+            numbers.sort();
+
+            if (
+                numsLen % 2 === 0 // is even
+            ) {
+                // average of two middle numbers
+                median = (numbers[numsLen / 2 - 1] + numbers[numsLen / 2]) / 2;
+            } else { // is odd
+                // middle number only
+                median = numbers[(numsLen - 1) / 2];
+            }
+
+            return median;
+        },
+
+        // Fast percentile function for "p" near edges.  This needs profiled for p in middle (e.g. median)
+        percentile: function (array, p) {
+
+            if (array.length === 0) return undefined;
+
+            var k = Math.floor(array.length * ((100 - p) / 100));
+            if (k === 0) {
+                array.sort(function (a, b) {
+                    return b - a
+                });
+                return array[k];
+            } else {
+                return selectElement(array, k);
+            }
+
+        },
+
+
+        clamp: function (value, min, max) {
+            return Math.min(Math.max(value, min), max);
+        },
+
+        log2: function (x) {
+            return Math.log(x) / Math.LN2;
+        }
+
+    };
+
+    function selectElement(array, k) {
+
+        // Credit Steve Hanov http://stevehanov.ca/blog/index.php?id=122
+        var heap = new BinaryHeap(),
+            i;
+
+        for (i = 0; i < array.length; i++) {
+
+            var item = array[i];
+
+            // If we have not yet found k items, or the current item is larger than
+            // the smallest item on the heap, add current item
+            if (heap.content.length < k || item > heap.content[0]) {
+                // If the heap is full, remove the smallest element on the heap.
+                if (heap.content.length === k) {
+                    heap.pop();
+                }
+                heap.push(item);
+            }
+        }
+
+        return heap.content[0];
+    }
+
+
+    function BinaryHeap() {
+        this.content = [];
+    }
+
+    BinaryHeap.prototype = {
+        push: function (element) {
+            // Add the new element to the end of the array.
+            this.content.push(element);
+            // Allow it to bubble up.
+            this.bubbleUp(this.content.length - 1);
+        },
+
+        pop: function () {
+            // Store the first element so we can return it later.
+            var result = this.content[0];
+            // Get the element at the end of the array.
+            var end = this.content.pop();
+            // If there are any elements left, put the end element at the
+            // start, and let it sink down.
+            if (this.content.length > 0) {
+                this.content[0] = end;
+                this.sinkDown(0);
+            }
+            return result;
+        },
+
+        remove: function (node) {
+            var length = this.content.length;
+            // To remove a value, we must search through the array to find
+            // it.
+            for (var i = 0; i < length; i++) {
+                if (this.content[i] !== node) continue;
+                // When it is found, the process seen in 'pop' is repeated
+                // to fill up the hole.
+                var end = this.content.pop();
+                // If the element we popped was the one we needed to remove,
+                // we're done.
+                if (i === length - 1) break;
+                // Otherwise, we replace the removed element with the popped
+                // one, and allow it to float up or sink down as appropriate.
+                this.content[i] = end;
+                this.bubbleUp(i);
+                this.sinkDown(i);
+                break;
+            }
+        },
+
+        size: function () {
+            return this.content.length;
+        },
+
+        bubbleUp: function (n) {
+            // Fetch the element that has to be moved.
+            var element = this.content[n], score = element;
+            // When at 0, an element can not go up any further.
+            while (n > 0) {
+                // Compute the parent element's index, and fetch it.
+                var parentN = Math.floor((n + 1) / 2) - 1,
+                    parent = this.content[parentN];
+                // If the parent has a lesser score, things are in order and we
+                // are done.
+                if (score >= parent)
+                    break;
+
+                // Otherwise, swap the parent with the current element and
+                // continue.
+                this.content[parentN] = element;
+                this.content[n] = parent;
+                n = parentN;
+            }
+        },
+
+        sinkDown: function (n) {
+            // Look up the target element and its score.
+            var length = this.content.length,
+                element = this.content[n],
+                elemScore = element;
+
+            while (true) {
+                // Compute the indices of the child elements.
+                var child2N = (n + 1) * 2, child1N = child2N - 1;
+                // This is used to store the new position of the element,
+                // if any.
+                var swap = null;
+                // If the first child exists (is inside the array)...
+                if (child1N < length) {
+                    // Look it up and compute its score.
+                    var child1 = this.content[child1N],
+                        child1Score = child1;
+                    // If the score is less than our element's, we need to swap.
+                    if (child1Score < elemScore)
+                        swap = child1N;
+                }
+                // Do the same checks for the other child.
+                if (child2N < length) {
+                    var child2 = this.content[child2N],
+                        child2Score = child2;
+                    if (child2Score < (swap == null ? elemScore : child1Score))
+                        swap = child2N;
+                }
+
+                // No need to swap further, we are done.
+                if (swap == null) break;
+
+                // Otherwise, swap and continue.
+                this.content[n] = this.content[swap];
+                this.content[swap] = element;
+                n = swap;
+            }
+        }
+    };
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    function _random(min, max) {
+        return Math.random() * (max - min) + min;
+    }
+
+    const IGVColor = {
+
+        rgbListFromHSV: () => {
+
+            let s = 1;
+            let accumulation = [];
+            for (let v = 1; v >= 0.5; v -= .1) {
+                for (let h = 0; h < 1; h += 1 / 28) {
+                    const r = "rgb(" + IGVColor.hsvToRgb(h, s, v).join(",") + ")";
+                    accumulation.push(r);
+                }
+            }
+
+            // add black
+            accumulation.pop();
+            accumulation.push(IGVColor.rgbColor(16, 16, 16));
+
+            return accumulation;
+        },
+
+        rgbToHex: function (rgb) {
+            rgb = rgb.match(/^rgba?[\s+]?\([\s+]?(\d+)[\s+]?,[\s+]?(\d+)[\s+]?,[\s+]?(\d+)[\s+]?/i);
+            return (rgb && rgb.length === 4) ? "#" +
+                ("0" + parseInt(rgb[1], 10).toString(16)).slice(-2) +
+                ("0" + parseInt(rgb[2], 10).toString(16)).slice(-2) +
+                ("0" + parseInt(rgb[3], 10).toString(16)).slice(-2) : '';
+        },
+
+        hexToRgb: function (hex) {
+
+            var cooked = /^#?([a-f\d]{2})([a-f\d]{2})([a-f\d]{2})$/i.exec(hex);
+
+            if (null === cooked) {
+                return undefined;
+            }
+
+            return "rgb(" + parseInt(cooked[1], 16) + "," + parseInt(cooked[2], 16) + "," + parseInt(cooked[3], 16) + ")";
+        },
+
+        /**
+         * Converts an HSV color value to RGB. Conversion formula
+         * adapted from http://en.wikipedia.org/wiki/HSV_color_space.
+         * Assumes h, s, and v are contained in the set [0, 1] and
+         * returns r, g, and b in the set [0, 255].
+         *
+         * Credit: https://gist.githubusercontent.com/mjackson/5311256
+         *
+         * @param   h       The hue
+         * @param   s       The saturation
+         * @param   v       The value
+         * @return  Array   The RGB representation
+         */
+        hsvToRgb: function (h, s, v) {
+            var r, g, b;
+
+            var i = Math.floor(h * 6);
+            var f = h * 6 - i;
+            var p = v * (1 - s);
+            var q = v * (1 - f * s);
+            var t = v * (1 - (1 - f) * s);
+
+            switch (i % 6) {
+                case 0:
+                    r = v, g = t, b = p;
+                    break;
+                case 1:
+                    r = q, g = v, b = p;
+                    break;
+                case 2:
+                    r = p, g = v, b = t;
+                    break;
+                case 3:
+                    r = p, g = q, b = v;
+                    break;
+                case 4:
+                    r = t, g = p, b = v;
+                    break;
+                case 5:
+                    r = v, g = p, b = q;
+                    break;
+            }
+
+            return [Math.floor(r * 255), Math.floor(g * 255), Math.floor(b * 255)];
+        },
+
+        /**
+         * Converts an HSL color value to RGB. Conversion formula
+         * adapted from http://en.wikipedia.org/wiki/HSL_color_space.
+         * Assumes h, s, and l are contained in the set [0, 1] and
+         * returns r, g, and b in the set [0, 255].
+         *
+         * Credit: https://gist.githubusercontent.com/mjackson/5311256
+         *
+         * @param   h       The hue
+         * @param   s       The saturation
+         * @param   l       The lightness
+         * @return  Array   The RGB representation
+         */
+        hslToRgb: function (h, s, l) {
+            var r, g, b;
+
+            if (s === 0) {
+                r = g = b = l; // achromatic
+            } else {
+
+
+                var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
+                var p = 2 * l - q;
+
+                r = IGVColor.hue2rgb(p, q, h + 1 / 3);
+                g = IGVColor.hue2rgb(p, q, h);
+                b = IGVColor.hue2rgb(p, q, h - 1 / 3);
+            }
+
+            return [r * 255, g * 255, b * 255];
+        },
+
+        hue2rgb: (p, q, t) => {
+            if (t < 0) t += 1;
+            if (t > 1) t -= 1;
+            if (t < 1 / 6) return p + (q - p) * 6 * t;
+            if (t < 1 / 2) return q;
+            if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;
+            return p;
+        },
+
+        rgbaColor: function (r, g, b, a) {
+
+            r = IGVMath.clamp(r, 0, 255);
+            g = IGVMath.clamp(g, 0, 255);
+            b = IGVMath.clamp(b, 0, 255);
+            a = IGVMath.clamp(a, 0.0, 1.0);
+
+            return "rgba(" + r + "," + g + "," + b + "," + a + ")";
+        },
+
+        rgbColor: function (r, g, b) {
+
+            r = IGVMath.clamp(r, 0, 255);
+            g = IGVMath.clamp(g, 0, 255);
+            b = IGVMath.clamp(b, 0, 255);
+
+            return "rgb(" + r + "," + g + "," + b + ")";
+        },
+
+        greyScale: function (value) {
+
+            var grey = IGVMath.clamp(value, 0, 255);
+
+            return "rgb(" + grey + "," + grey + "," + grey + ")";
+        },
+
+        randomGrey: function (min, max) {
+
+            min = IGVMath.clamp(min, 0, 255);
+            max = IGVMath.clamp(max, 0, 255);
+
+            var g = Math.round(_random(min, max)).toString(10);
+
+            return "rgb(" + g + "," + g + "," + g + ")";
+        },
+
+        randomRGB: function (min, max) {
+
+            min = IGVMath.clamp(min, 0, 255);
+            max = IGVMath.clamp(max, 0, 255);
+
+            var r = Math.round(_random(min, max)).toString(10);
+            var g = Math.round(_random(min, max)).toString(10);
+            var b = Math.round(_random(min, max)).toString(10);
+
+            return "rgb(" + r + "," + g + "," + b + ")";
+        },
+
+        randomRGBConstantAlpha: function (min, max, alpha) {
+
+            min = IGVMath.clamp(min, 0, 255);
+            max = IGVMath.clamp(max, 0, 255);
+
+            var r = Math.round(_random(min, max)).toString(10);
+            var g = Math.round(_random(min, max)).toString(10);
+            var b = Math.round(_random(min, max)).toString(10);
+
+            return "rgba(" + r + "," + g + "," + b + "," + alpha + ")";
+        },
+
+        addAlpha: function (color, alpha) {
+
+            if(color === "0" || color === ".") {
+                color = "rgb(0,0,0)";
+            } else {
+                const c = this.colorNameToHex(color);
+                if (c) {
+                    color = c;
+                }
+            }
+
+            var isHex = /(^#[0-9A-F]{6}$)|(^#[0-9A-F]{3}$)/i.test(color);
+
+            if (color.startsWith("rgba")) {
+                const idx = color.lastIndexOf(",");
+                return color.substring(0, idx+1) + alpha.toString() + ")";
+            }
+
+            if (isHex) {
+                color = IGVColor.hexToRgb(color);
+            }
+
+            if (color.startsWith("rgb")) {
+                return color.replace("rgb", "rgba").replace(")", ", " + alpha + ")");
+            } else {
+                console.log(color + " is not an rgb style string");
+                return color;
+            }
+        },
+
+        rgbComponents: function (color) {
+
+            if(color === "0" || color === ".") {
+                return [0,0,0];
+            }
+            const isHex = /(^#[0-9A-F]{6}$)|(^#[0-9A-F]{3}$)/i.test(color);
+            if (isHex) {
+                color = IGVColor.hexToRgb(color);
+            } else {
+                if(!color.startsWith("rgb")) {
+                    const hex = this.colorNameToHex(color);
+                    color = this.hexToRgb(hex);
+                }
+            }
+
+            if (color.startsWith("rgb(")) {
+                return color.substring(4, color.length-1).split(",").map(s => Number.parseInt(s.trim()));
+             } else if (color.startsWith("rgba(")) {
+                return color.substring(5, color.length-1).split(",").map((s, i) => {
+                    s = s.trim();
+                    return i === 3 ? Number.parseFloat(s) : Number.parseInt(s)
+                });
+            }
+            else {
+                throw Error("Unrecognized color string: color");
+            }
+        },
+
+        /**
+         *
+         * @param dest  RGB components as an array
+         * @param src  RGB components as an array
+         * @param alpha   alpha transparancy in the range 0-1
+         * @returns {}
+         */
+        getCompositeColor: function (dest, src, alpha) {
+
+            var r = Math.floor(alpha * src[0] + (1 - alpha) * dest[0]),
+                g = Math.floor(alpha * src[1] + (1 - alpha) * dest[1]),
+                b = Math.floor(alpha * src[2] + (1 - alpha) * dest[2]);
+
+            return "rgb(" + r + "," + g + "," + b + ")";
+
+        },
+
+
+        createColorString: function (str) {
+            // Excel will quote color strings, strip all quotes
+            str = stripQuotes$1(str);
+
+            if (str.includes(",")) {
+                return str.startsWith("rgb") ? str : "rgb(" + str + ")";
+            } else {
+                return str;
+            }
+        },
+
+        darkenLighten: function (color, amt) {
+
+            let src;
+            let hexColor = this.colorNameToHex(color);
+            if(hexColor) {
+                src  = IGVColor.hexToRgb(hexColor);
+            } else {
+                src = color.startsWith('rgb(') ? color : IGVColor.hexToRgb(color);
+            }
+
+            const components = src.replace(")", "").substring(4).split(",");
+
+            const r = Math.max(0, Math.min(255, Number.parseInt(components[0].trim()) + amt));
+            const g = Math.max(0, Math.min(255, Number.parseInt(components[1].trim()) + amt));
+            const b = Math.max(0, Math.min(255, Number.parseInt(components[2].trim()) + amt));
+
+            return 'rgb(' + r.toString() + ',' + g.toString() + ',' + b.toString() + ')';
+
+        },
+
+        /**
+         * Convert html/css color name to hex value.  Adapted from https://gist.github.com/mxfh/4719348
+         * @param colorName
+         * @returns {*}
+         */
+        colorNameToHex: function (colorName) { // color list from http://stackoverflow.com/q/1573053/731179  with added gray/gray
+            const definedColorNames = {
+                "aliceblue": "#f0f8ff",
+                "antiquewhite": "#faebd7",
+                "aqua": "#00ffff",
+                "aquamarine": "#7fffd4",
+                "azure": "#f0ffff",
+                "beige": "#f5f5dc",
+                "bisque": "#ffe4c4",
+                "black": "#000000",
+                "blanchedalmond": "#ffebcd",
+                "blue": "#0000ff",
+                "blueviolet": "#8a2be2",
+                "brown": "#a52a2a",
+                "burlywood": "#deb887",
+                "cadetblue": "#5f9ea0",
+                "chartreuse": "#7fff00",
+                "chocolate": "#d2691e",
+                "coral": "#ff7f50",
+                "cornflowerblue": "#6495ed",
+                "cornsilk": "#fff8dc",
+                "crimson": "#dc143c",
+                "cyan": "#00ffff",
+                "darkblue": "#00008b",
+                "darkcyan": "#008b8b",
+                "darkgoldenrod": "#b8860b",
+                "darkgray": "#a9a9a9",
+                "darkgreen": "#006400",
+                "darkkhaki": "#bdb76b",
+                "darkmagenta": "#8b008b",
+                "darkolivegreen": "#556b2f",
+                "darkorange": "#ff8c00",
+                "darkorchid": "#9932cc",
+                "darkred": "#8b0000",
+                "darksalmon": "#e9967a",
+                "darkseagreen": "#8fbc8f",
+                "darkslateblue": "#483d8b",
+                "darkslategray": "#2f4f4f",
+                "darkturquoise": "#00ced1",
+                "darkviolet": "#9400d3",
+                "deeppink": "#ff1493",
+                "deepskyblue": "#00bfff",
+                "dimgray": "#696969",
+                "dodgerblue": "#1e90ff",
+                "firebrick": "#b22222",
+                "floralwhite": "#fffaf0",
+                "forestgreen": "#228b22",
+                "fuchsia": "#ff00ff",
+                "gainsboro": "#dcdcdc",
+                "ghostwhite": "#f8f8ff",
+                "gold": "#ffd700",
+                "goldenrod": "#daa520",
+                "gray": "#808080",
+                "green": "#008000",
+                "greenyellow": "#adff2f",
+                "honeydew": "#f0fff0",
+                "hotpink": "#ff69b4",
+                "indianred ": "#cd5c5c",
+                "indigo ": "#4b0082",
+                "ivory": "#fffff0",
+                "khaki": "#f0e68c",
+                "lavender": "#e6e6fa",
+                "lavenderblush": "#fff0f5",
+                "lawngreen": "#7cfc00",
+                "lemonchiffon": "#fffacd",
+                "lightblue": "#add8e6",
+                "lightcoral": "#f08080",
+                "lightcyan": "#e0ffff",
+                "lightgoldenrodyellow": "#fafad2",
+                "lightgrey": "#d3d3d3",
+                "lightgreen": "#90ee90",
+                "lightpink": "#ffb6c1",
+                "lightsalmon": "#ffa07a",
+                "lightseagreen": "#20b2aa",
+                "lightskyblue": "#87cefa",
+                "lightslategray": "#778899",
+                "lightsteelblue": "#b0c4de",
+                "lightyellow": "#ffffe0",
+                "lime": "#00ff00",
+                "limegreen": "#32cd32",
+                "linen": "#faf0e6",
+                "magenta": "#ff00ff",
+                "maroon": "#800000",
+                "mediumaquamarine": "#66cdaa",
+                "mediumblue": "#0000cd",
+                "mediumorchid": "#ba55d3",
+                "mediumpurple": "#9370d8",
+                "mediumseagreen": "#3cb371",
+                "mediumslateblue": "#7b68ee",
+                "mediumspringgreen": "#00fa9a",
+                "mediumturquoise": "#48d1cc",
+                "mediumvioletred": "#c71585",
+                "midnightblue": "#191970",
+                "mintcream": "#f5fffa",
+                "mistyrose": "#ffe4e1",
+                "moccasin": "#ffe4b5",
+                "navajowhite": "#ffdead",
+                "navy": "#000080",
+                "oldlace": "#fdf5e6",
+                "olive": "#808000",
+                "olivedrab": "#6b8e23",
+                "orange": "#ffa500",
+                "orangered": "#ff4500",
+                "orchid": "#da70d6",
+                "palegoldenrod": "#eee8aa",
+                "palegreen": "#98fb98",
+                "paleturquoise": "#afeeee",
+                "palevioletred": "#d87093",
+                "papayawhip": "#ffefd5",
+                "peachpuff": "#ffdab9",
+                "peru": "#cd853f",
+                "pink": "#ffc0cb",
+                "plum": "#dda0dd",
+                "powderblue": "#b0e0e6",
+                "purple": "#800080",
+                "red": "#ff0000",
+                "rosybrown": "#bc8f8f",
+                "royalblue": "#4169e1",
+                "saddlebrown": "#8b4513",
+                "salmon": "#fa8072",
+                "sandybrown": "#f4a460",
+                "seagreen": "#2e8b57",
+                "seashell": "#fff5ee",
+                "sienna": "#a0522d",
+                "silver": "#c0c0c0",
+                "skyblue": "#87ceeb",
+                "slateblue": "#6a5acd",
+                "slategray": "#708090",
+                "snow": "#fffafa",
+                "springgreen": "#00ff7f",
+                "steelblue": "#4682b4",
+                "tan": "#d2b48c",
+                "teal": "#008080",
+                "thistle": "#d8bfd8",
+                "tomato": "#ff6347",
+                "turquoise": "#40e0d0",
+                "violet": "#ee82ee",
+                "wheat": "#f5deb3",
+                "white": "#ffffff",
+                "whitesmoke": "#f5f5f5",
+                "yellow": "#ffff00",
+                "yellowgreen": "#9acd32",
+                "darkgrey": "#a9a9a9",
+                "darkslategrey": "#2f4f4f",
+                "dimgrey": "#696969",
+                "grey": "#808080",
+                "lightgray": "#d3d3d3",
+                "lightslategrey": "#778899",
+                "slategrey": "#708090"
+            };
+            return definedColorNames[colorName];
+        }
+    };
+
+    // Support for oauth token based authorization
+    // This class supports explicit setting of an oauth token either globally or for specific hosts.
+    //
+    // The variable oauth.google.access_token, which becomes igv.oauth.google.access_token on ES5 conversion is
+    // supported for backward compatibility
+
+    const DEFAULT_HOST = "googleapis";
+
+    class Oauth {
+
+        constructor() {
+            this.oauthTokens = {};
+        }
+
+
+        setToken(token, host) {
+            host = host || DEFAULT_HOST;
+            this.oauthTokens[host] = token;
+        }
+
+        getToken(host) {
+            host = host || DEFAULT_HOST;
+            let token;
+            for (let key of Object.keys(this.oauthTokens)) {
+                const regex = wildcardToRegExp(key);
+                if (regex.test(host)) {
+                    token = this.oauthTokens[key];
+                    break
+                }
+            }
+            return token
+        }
+
+        removeToken(host) {
+            host = host || DEFAULT_HOST;
+            for (let key of Object.keys(this.oauthTokens)) {
+                const regex = wildcardToRegExp(key);
+                if (regex.test(host)) {
+                    this.oauthTokens[key] = undefined;
+                }
+            }
+        }
+
+        // Special object for google -- legacy support
+        // google: {
+        //     setToken: function (token) {
+        //         oauth.setToken(token);
+        //     }
+        // }
+    }
+
+
+    /**
+     * Creates a RegExp from the given string, converting asterisks to .* expressions,
+     * and escaping all other characters.
+     *
+     * credit https://gist.github.com/donmccurdy/6d073ce2c6f3951312dfa45da14a420f
+     */
+    function wildcardToRegExp(s) {
+        return new RegExp('^' + s.split(/\*+/).map(regExpEscape).join('.*') + '$')
+    }
+
+    /**
+     * RegExp-escapes all characters in the given string.
+     *
+     * credit https://gist.github.com/donmccurdy/6d073ce2c6f3951312dfa45da14a420f
+     */
+    function regExpEscape(s) {
+        return s.replace(/[|\\{}()[\]^$+*?.]/g, '\\$&')
+    }
+
+    function isGoogleURL(url) {
+        return (url.includes("googleapis") && !url.includes("urlshortener")) ||
+            isGoogleStorageURL(url) ||
+            isGoogleDriveURL(url)
+    }
+
+    function isGoogleStorageURL(url) {
+        return url.startsWith("gs://") ||
+            url.startsWith("https://www.googleapis.com/storage") ||
+            url.startsWith("https://storage.cloud.google.com") ||
+            url.startsWith("https://storage.googleapis.com");
+    }
+
+    function isGoogleDriveURL(url) {
+        return url.indexOf("drive.google.com") >= 0 || url.indexOf("www.googleapis.com/drive") > 0
+    }
+
+    /**
+     * Translate gs:// urls to https
+     * See https://cloud.google.com/storage/docs/json_api/v1
+     * @param gsUrl
+     * @returns {string|*}
+     */
+    function translateGoogleCloudURL(gsUrl) {
+
+        let {bucket, object} = parseBucketName(gsUrl);
+        object = encode(object);
+
+        const qIdx = gsUrl.indexOf('?');
+        const paramString = (qIdx > 0) ? gsUrl.substring(qIdx) + "&alt=media" : "?alt=media";
+
+        return `https://storage.googleapis.com/storage/v1/b/${bucket}/o/${object}${paramString}`
+    }
+
+    /**
+     * Parse a google bucket and object name from a google storage URL.  Known forms include
+     *
+     * gs://BUCKET_NAME/OBJECT_NAME
+     * https://storage.googleapis.com/BUCKET_NAME/OBJECT_NAME
+     * https://storage.googleapis.com/storage/v1/b/BUCKET_NAME/o/OBJECT_NAME
+     * https://www.googleapis.com/storage/v1/b/BUCKET_NAME/o/OBJECT_NAME"
+     * https://storage.googleapis.com/download/storage/v1/b/BUCKET_NAME/o/OBJECT_NAME
+     *
+     * @param url
+     */
+    function parseBucketName(url) {
+
+        let bucket;
+        let object;
+
+        if (url.startsWith("gs://")) {
+            const i = url.indexOf('/', 5);
+            if (i >= 0) {
+                bucket = url.substring(5, i);
+                const qIdx = url.indexOf('?');
+                object = (qIdx < 0) ? url.substring(i + 1) : url.substring(i + 1, qIdx);
+            }
+
+        } else if (url.startsWith("https://storage.googleapis.com") || url.startsWith("https://storage.cloud.google.com")) {
+            const bucketIdx = url.indexOf("/v1/b/", 8);
+            if (bucketIdx > 0) {
+                const objIdx = url.indexOf("/o/", bucketIdx);
+                if (objIdx > 0) {
+                    const queryIdx = url.indexOf("?", objIdx);
+                    bucket = url.substring(bucketIdx + 6, objIdx);
+                    object = queryIdx > 0 ? url.substring(objIdx + 3, queryIdx) : url.substring(objIdx + 3);
+                }
+
+            } else {
+                const idx1 = url.indexOf("/", 8);
+                const idx2 = url.indexOf("/", idx1+1);
+                const idx3 = url.indexOf("?", idx2);
+                if (idx2 > 0) {
+                    bucket = url.substring(idx1+1, idx2);
+                    object = idx3 < 0 ? url.substring(idx2+1) : url.substring(idx2+1, idx3);
+                }
+            }
+
+        } else if (url.startsWith("https://www.googleapis.com/storage/v1/b")) {
+            const bucketIdx = url.indexOf("/v1/b/", 8);
+            const objIdx = url.indexOf("/o/", bucketIdx);
+            if (objIdx > 0) {
+                const queryIdx = url.indexOf("?", objIdx);
+                bucket = url.substring(bucketIdx + 6, objIdx);
+                object = queryIdx > 0 ? url.substring(objIdx + 3, queryIdx) : url.substring(objIdx + 3);
+            }
+        }
+
+        if (bucket && object) {
+            return {
+                bucket, object
+            }
+        } else {
+            throw Error(`Unrecognized Google Storage URI: ${url}`)
+        }
+
+    }
+
+    /**
+     * Percent a GCS object name.  See https://cloud.google.com/storage/docs/request-endpoints
+     * Specific characters to encode:
+     *   !, #, $, &, ', (, ), *, +, ,, /, :, ;, =, ?, @, [, ], and space characters.
+     * @param obj
+     */
+
+    function encode(objectName) {
+
+        let result = '';
+        objectName.split('').forEach(function(letter) {
+            if(encodings$1.has(letter)) {
+                result += encodings$1.get(letter);
+            } else {
+                result += letter;
+            }
+        });
+        return result;
+    }
+
+    //	%23	%24	%25	%26	%27	%28	%29	%2A	%2B	%2C	%2F	%3A	%3B	%3D	%3F	%40	%5B	%5D
+    const encodings$1 = new Map();
+    encodings$1.set("!", "%21");
+    encodings$1.set("#", "%23");
+    encodings$1.set("$", "%24");
+    encodings$1.set("%", "%25");
+    encodings$1.set("&", "%26");
+    encodings$1.set("'", "%27");
+    encodings$1.set("(", "%28");
+    encodings$1.set(")", "%29");
+    encodings$1.set("*", "%2A");
+    encodings$1.set("+", "%2B");
+    encodings$1.set(",", "%2C");
+    encodings$1.set("/", "%2F");
+    encodings$1.set(":", "%3A");
+    encodings$1.set(";", "%3B");
+    encodings$1.set("=", "%3D");
+    encodings$1.set("?", "%3F");
+    encodings$1.set("@", "%40");
+    encodings$1.set("[", "%5B");
+    encodings$1.set("]", "%5D");
+    encodings$1.set(" ", "%20");
+
+    // Convenience functions for the gapi oAuth library.
+
+    async function init$1(config) {
+
+        if (!(google.accounts.oauth2.initTokenClient)) {
+            throw new Error("Google accounts token client not loaded (https://accounts.google.com/gsi/client)")
+        }
+
+        if (isInitialized()) {
+            throw new Error("Google client is already initialized")
+        }
+
+        // Note: callback is added when accessToken is requested
+        const codeClientConfig = {
+            client_id: config.client_id,
+            scope: config.scope || 'https://www.googleapis.com/auth/userinfo.profile',
+            state: config.state || 'igv',
+            error: (err) => {
+                throw new Error(err.type)
+            },
+            hint: config.hint,     // Optional
+            hosted_domain: config.hosted_domain  // Optional
+        };
+
+        const tokenClient = google.accounts.oauth2.initTokenClient(codeClientConfig);
+
+        // Attach an object to keep igv state
+        google.igv = {
+            tokenClient: tokenClient,
+            apiKey: config.apiKey
+        };
+    }
+
+    function isInitialized() {
+        return window.google && window.google.igv
+    }
+
+    /**
+     * Return the current access token if the user is signed in, or undefined otherwise.  This function does not
+     * attempt a signIn or request any specfic scopes.
+     *
+     * @returns access_token || undefined
+     */
+    function getCurrentAccessToken() {
+        return (isInitialized() && google.igv.tokenResponse && Date.now() < google.igv.tokenExpiresAt) ?
+            google.igv.tokenResponse.access_token :
+            undefined
+    }
+
+
+    /**
+     * Return a promise for an access token for the given scope.  If the user hasn't authorized the scope request it
+     *
+     * @param scope
+     * @returns {Promise<unknown>}
+     */
+    async function getAccessToken(scope) {
+
+        if (!isInitialized()) {
+            throw Error("Google oAuth has not been initialized")
+        }
+
+        if (google.igv.tokenResponse &&
+            Date.now() < google.igv.tokenExpiresAt &&
+            google.accounts.oauth2.hasGrantedAllScopes(google.igv.tokenResponse, scope)) {
+            return google.igv.tokenResponse.access_token
+        } else {
+            const tokenClient = google.igv.tokenClient;
+            return new Promise((resolve, reject) => {
+                try {
+                    // Settle this promise in the response callback for requestAccessToken()
+                    tokenClient.callback = (tokenResponse) => {
+                        if (tokenResponse.error !== undefined) {
+                            reject(tokenResponse);
+                        }
+                        google.igv.tokenResponse = tokenResponse;
+                        google.igv.tokenExpiresAt = Date.now() + tokenResponse.expires_in * 1000;
+                        resolve(tokenResponse.access_token);
+                    };
+                    tokenClient.requestAccessToken({scope});
+                } catch (err) {
+                    console.log(err);
+                }
+            })
+        }
+    }
+
+    // gapi.auth2.getAuthInstance().isSignedIn.listen(status => {
+    //     const user = gapi.auth2.getAuthInstance().currentUser.get()
+    //     queryGoogleAuthenticationStatus(user, status)
+    // })
+
+    function getScopeForURL(url) {
+        if (isGoogleDriveURL(url)) {
+            return "https://www.googleapis.com/auth/drive.readonly"
+        } else if (isGoogleStorageURL(url)) {
+            return "https://www.googleapis.com/auth/devstorage.read_only"
+        } else {
+            return 'https://www.googleapis.com/auth/userinfo.profile'
+        }
+    }
+
+    function getApiKey() {
+        return google.igv.apiKey
+    }
+
+    /**
+     * Return information about a specific google drive URL
+     *
+     * @param googleDriveURL
+     * @returns {Promise<any>}
+     */
+    async function getDriveFileInfo(googleDriveURL) {
+
+        const id = getGoogleDriveFileID(googleDriveURL);
+        let endPoint = "https://www.googleapis.com/drive/v3/files/" + id + "?supportsTeamDrives=true";
+        const apiKey = getApiKey();
+        if (apiKey) {
+            endPoint += "&key=" + apiKey;
+        }
+        const response = await fetch(endPoint);
+        let json = await response.json();
+        if (json.error && json.error.code === 404) {
+            let scope = "https://www.googleapis.com/auth/drive.readonly";
+            const access_token = await getAccessToken(scope);
+            if (access_token) {
+                const response = await fetch(endPoint, {
+                    headers: {
+                        'Authorization': `Bearer ${access_token}`
+                    }
+                });
+                json = await response.json();
+                if (json.error) {
+                    throw Error(json.error);
+                }
+            } else {
+                throw Error(json.error);
+            }
+        }
+        return json;
+    }
+
+
+    function getDriveDownloadURL(link) {
+        // Return a google drive download url for the sharable link
+        //https://drive.google.com/open?id=0B-lleX9c2pZFbDJ4VVRxakJzVGM
+        //https://drive.google.com/file/d/1_FC4kCeO8E3V4dJ1yIW7A0sn1yURKIX-/view?usp=sharing
+        var id = getGoogleDriveFileID(link);
+        return id ? "https://www.googleapis.com/drive/v3/files/" + id + "?alt=media&supportsTeamDrives=true" : link;
+    }
+
+    function getGoogleDriveFileID(link) {
+
+        //https://drive.google.com/file/d/1_FC4kCeO8E3V4dJ1yIW7A0sn1yURKIX-/view?usp=sharing
+        //https://www.googleapis.com/drive/v3/files/1w-tvo6p1SH4p1OaQSVxpkV_EJgGIstWF?alt=media&supportsTeamDrives=true"
+
+        if (link.includes("/open?id=")) {
+            const i1 = link.indexOf("/open?id=") + 9;
+            const i2 = link.indexOf("&");
+            if (i1 > 0 && i2 > i1) {
+                return link.substring(i1, i2)
+            } else if (i1 > 0) {
+                return link.substring(i1);
+            }
+
+        } else if (link.includes("/file/d/")) {
+            const i1 = link.indexOf("/file/d/") + 8;
+            const i2 = link.lastIndexOf("/");
+            return link.substring(i1, i2);
+
+        } else if (link.startsWith("https://www.googleapis.com/drive")) {
+            let i1 = link.indexOf("/files/");
+            const i2 = link.indexOf("?");
+            if (i1 > 0) {
+                i1 += 7;
+                return i2 > 0 ?
+                    link.substring(i1, i2) :
+                    link.substring(i1)
+            }
+        }
+
+        throw Error("Unknown Google Drive url format: " + link);
+
+
+    }
+
+    // The MIT License (MIT)
+
+    /**
+     * @constructor
+     * @param {Object} options A set op options to pass to the throttle function
+     *        @param {number} requestsPerSecond The amount of requests per second
+     *                                          the library will limit to
+     */
+    class Throttle {
+        constructor(options) {
+            this.requestsPerSecond = options.requestsPerSecond || 10;
+            this.lastStartTime = 0;
+            this.queued = [];
+        }
+
+        /**
+         * Adds a promise
+         * @param {Function} async function to be executed
+         * @param {Object} options A set of options.
+         * @return {Promise} A promise
+         */
+        add(asyncFunction, options) {
+
+            var self = this;
+            return new Promise(function (resolve, reject) {
+                self.queued.push({
+                    resolve: resolve,
+                    reject: reject,
+                    asyncFunction: asyncFunction,
+                });
+                self.dequeue();
+            });
+        }
+
+        /**
+         * Adds all the promises passed as parameters
+         * @param {Function} promises An array of functions that return a promise
+         * @param {Object} options A set of options.
+         * @param {number} options.signal An AbortSignal object that can be used to abort the returned promise
+         * @param {number} options.weight A "weight" of each operation resolving by array of promises
+         * @return {Promise} A promise that succeeds when all the promises passed as options do
+         */
+        addAll(promises, options) {
+            var addedPromises = promises.map(function (promise) {
+                return this.add(promise, options);
+            }.bind(this));
+
+            return Promise.all(addedPromises);
+        };
+
+        /**
+         * Dequeues a promise
+         * @return {void}
+         */
+        dequeue() {
+            if (this.queued.length > 0) {
+                var now = new Date(),
+                    inc = (1000 / this.requestsPerSecond) + 1,
+                    elapsed = now - this.lastStartTime;
+
+                if (elapsed >= inc) {
+                    this._execute();
+                } else {
+                    // we have reached the limit, schedule a dequeue operation
+                    setTimeout(function () {
+                        this.dequeue();
+                    }.bind(this), inc - elapsed);
+                }
+            }
+        }
+
+        /**
+         * Executes the promise
+         * @private
+         * @return {void}
+         */
+        async _execute() {
+            this.lastStartTime = new Date();
+            var candidate = this.queued.shift();
+            const f = candidate.asyncFunction;
+            try {
+                const r = await f();
+                candidate.resolve(r);
+            } catch (e) {
+                candidate.reject(e);
+            }
+
+        }
+
+
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class IGVXhr {
+
+        constructor() {
+            this.apiKey = undefined;
+            this.googleThrottle = new Throttle({
+                requestsPerSecond: 8
+            });
+            this.RANGE_WARNING_GIVEN = false;
+            this.oauth = new Oauth();
+        }
+
+        setApiKey(key) {
+            this.apiKey = key;
+        }
+
+        async loadArrayBuffer(url, options) {
+            options = options || {};
+            if (!options.responseType) {
+                options.responseType = "arraybuffer";
+            }
+            if (isFile(url)) {
+                return this._loadFileSlice(url, options)
+            } else {
+                return this.load(url, options)
+            }
+        }
+
+        async loadJson(url, options) {
+            options = options || {};
+            const method = options.method || (options.sendData ? "POST" : "GET");
+            if (method === "POST") {
+                options.contentType = "application/json";
+            }
+            const result = await this.loadString(url, options);
+            if (result) {
+                return JSON.parse(result)
+            } else {
+                return result
+            }
+        }
+
+        async loadString(path, options) {
+            options = options || {};
+            if (path instanceof File) {
+                return this._loadStringFromFile(path, options)
+            } else {
+                return this._loadStringFromUrl(path, options)
+            }
+        }
+
+        async load(url, options) {
+
+            options = options || {};
+            const urlType = typeof url;
+
+            // Resolve functions, promises, and functions that return promises
+            url = await (typeof url === 'function' ? url() : url);
+
+            if (isFile(url)) {
+                return this._loadFileSlice(url, options)
+            } else if (typeof url.startsWith === 'function') {   // Test for string
+                if (url.startsWith("data:")) {
+                    const buffer = decodeDataURI$1(url).buffer;
+                    if (options.range) {
+                        const rangeEnd = options.range.size ? options.range.start + options.range.size : buffer.byteLength;
+                        return buffer.slice(options.range.start, rangeEnd)
+                    } else {
+                        return buffer
+                    }
+                } else {
+                    if (url.startsWith("https://drive.google.com")) {
+                        url = getDriveDownloadURL(url);
+                    }
+                    if (isGoogleDriveURL(url) || url.startsWith("https://www.dropbox.com")) {
+                        return this.googleThrottle.add(async () => {
+                            return this._loadURL(url, options)
+                        })
+                    } else {
+                        return this._loadURL(url, options)
+                    }
+                }
+            } else {
+                throw Error(`url must be either a 'File', 'string', 'function', or 'Promise'.  Actual type: ${urlType}`)
+            }
+        }
+
+        async _loadURL(url, options) {
+
+            const self = this;
+            const _url = url;   // The unmodified URL, needed in case of an oAuth retry
+
+            url = mapUrl$1(url);
+
+            options = options || {};
+
+            let oauthToken = options.oauthToken || this.getOauthToken(url);
+            if (oauthToken) {
+                oauthToken = await (typeof oauthToken === 'function' ? oauthToken() : oauthToken);
+            }
+
+            return new Promise(function (resolve, reject) {
+
+                // Various Google tansformations
+                if (isGoogleURL(url) && !isGoogleStorageSigned(url)) {
+                    if (isGoogleStorageURL(url)) {
+                        url = translateGoogleCloudURL(url);
+                    }
+                    url = addApiKey(url);
+
+                    if (isGoogleDriveURL(url)) {
+                        addTeamDrive(url);
+                    }
+
+                    // If we have an access token try it, but don't force a signIn or request for scopes yet
+                    if (!oauthToken) {
+                        oauthToken = getCurrentGoogleAccessToken();
+                    }
+                }
+
+                const headers = options.headers || {};
+                if (oauthToken) {
+                    addOauthHeaders(headers, oauthToken);
+                }
+                const range = options.range;
+
+
+                const xhr = new XMLHttpRequest();
+                const sendData = options.sendData || options.body;
+                const method = options.method || (sendData ? "POST" : "GET");
+                const responseType = options.responseType;
+                const contentType = options.contentType;
+                const mimeType = options.mimeType;
+
+                xhr.open(method, url);
+
+                if (options.timeout) {
+                    xhr.timeout = options.timeout;
+                }
+
+                if (range) {
+                    let rangeEnd = "";
+                    if (range.size) {
+                        rangeEnd = range.start + range.size - 1;
+                    }
+                    xhr.setRequestHeader("Range", "bytes=" + range.start + "-" + rangeEnd);
+                    //      xhr.setRequestHeader("Cache-Control", "no-cache");    <= This can cause CORS issues, disabled for now
+                }
+                if (contentType) {
+                    xhr.setRequestHeader("Content-Type", contentType);
+                }
+                if (mimeType) {
+                    xhr.overrideMimeType(mimeType);
+                }
+                if (responseType) {
+                    xhr.responseType = responseType;
+                }
+                if (headers) {
+                    for (let key of Object.keys(headers)) {
+                        const value = headers[key];
+                        xhr.setRequestHeader(key, value);
+                    }
+                }
+
+                // NOTE: using withCredentials with servers that return "*" for access-allowed-origin will fail
+                if (options.withCredentials === true) {
+                    xhr.withCredentials = true;
+                }
+
+                xhr.onload = async function (event) {
+
+                    // when the url points to a local file, the status is 0
+                    if (xhr.status === 0 || (xhr.status >= 200 && xhr.status <= 300)) {
+                        if ("HEAD" === options.method) {
+                            // Support fetching specific headers.  Attempting to fetch all headers can be problematic with CORS
+                            const headers = options.requestedHeaders || ['content-length'];
+                            const headerMap = {};
+                            for (let h of headers) {
+                                headerMap[h] = xhr.getResponseHeader(h);
+                            }
+                            resolve(headerMap);
+                        } else {
+                            // Assume "GET" or "POST"
+                            if (range && xhr.status !== 206 && range.start !== 0) {
+
+                                // For small files a range starting at 0 can return the whole file => 200
+                                // Provide just the slice we asked for, throw out the rest quietly
+                                // If file is large warn user
+                                if (xhr.response.length > 100000 && !self.RANGE_WARNING_GIVEN) {
+                                    alert(`Warning: Range header ignored for URL: ${url}.  This can have severe performance impacts.`);
+                                }
+                                resolve(xhr.response.slice(range.start, range.start + range.size));
+                            } else {
+                                resolve(xhr.response);
+                            }
+                        }
+                    } else if (xhr.status === 416) {
+                        handleError(Error(`416 Unsatisfiable Range`));
+                    } else if ((typeof gapi !== "undefined") &&
+                        ((xhr.status === 404 || xhr.status === 401 || xhr.status === 403) &&
+                            isGoogleURL(url)) &&
+                        !options.retries) {
+                        tryGoogleAuth();
+
+                    } else {
+                        if (xhr.status === 403) {
+                            handleError("Access forbidden: " + url);
+                        } else {
+                            handleError(xhr.status);
+                        }
+                    }
+                };
+
+
+                xhr.onerror = function (event) {
+                    if (isGoogleURL(url) && !options.retries) {
+                        tryGoogleAuth();
+                    } else {
+                        handleError("Error accessing resource: " + url + " Status: " + xhr.status);
+                    }
+                };
+
+                xhr.ontimeout = function (event) {
+                    handleError("Timed out");
+                };
+
+                xhr.onabort = function (event) {
+                    console.log("Aborted");
+                    reject(event);
+                };
+
+                try {
+                    xhr.send(sendData);
+                } catch (e) {
+                    if (isGoogleURL(url) && !options.retries) {
+                        tryGoogleAuth();
+                    } else {
+                        handleError(e);
+                    }
+                }
+
+
+                function handleError(error) {
+                    if (reject) {
+                        reject(error);
+                    } else {
+                        throw error
+                    }
+                }
+
+                async function tryGoogleAuth() {
+                    try {
+                        const accessToken = await fetchGoogleAccessToken(_url);
+                        options.retries = 1;
+                        options.oauthToken = accessToken;
+                        const response = await self.load(_url, options);
+                        resolve(response);
+                    } catch (e) {
+                        if (e.error) {
+                            const msg = e.error.startsWith("popup_blocked") ?
+                                "Google login popup blocked by browser." :
+                                e.error;
+                            alert(msg);
+                        } else {
+                            handleError(e);
+                        }
+                    }
+                }
+            })
+
+        }
+
+        async _loadFileSlice(localfile, options) {
+
+            let blob = (options && options.range) ?
+                localfile.slice(options.range.start, options.range.start + options.range.size) :
+                localfile;
+
+            const arrayBuffer = await blob.arrayBuffer();
+
+            if ("arraybuffer" === options.responseType) {
+                return arrayBuffer
+            } else {
+                return arrayBufferToString(arrayBuffer)
+            }
+        }
+
+        async _loadStringFromFile(localfile, options) {
+
+            const blob = options.range ? localfile.slice(options.range.start, options.range.start + options.range.size) : localfile;
+            const arrayBuffer = await blob.arrayBuffer();
+            return arrayBufferToString(arrayBuffer)
+        }
+
+        async _loadStringFromUrl(url, options) {
+
+            options = options || {};
+            options.responseType = "arraybuffer";
+            const data = await this.load(url, options);
+            return arrayBufferToString(data)
+        }
+
+        /**
+         * Explicity set an oAuth token for use with given host.  If host is undefined token is used for google api access*
+         * @param token
+         * @param host
+         */
+        setOauthToken(token, host) {
+            this.oauth.setToken(token, host);
+        }
+
+        /**
+         * Return an oauth token for the URL if we have one.  This method does not force sign-in, and the token may
+         * or may not be valid.  Sign-in is triggered on request failure.
+         * *
+         * @param url
+         * @returns {*}
+         */
+        getOauthToken(url) {
+
+            // Google is the default provider, don't try to parse host for google URLs
+            const host = isGoogleURL(url) ?
+                undefined :
+                parseUri(url).host;
+
+            // First check the explicit settings (i.e. token set through the API)
+            let token = this.oauth.getToken(host);
+            if (token) {
+                return token
+            } else if (host === undefined) {
+                // Now try Google oauth tokens previously obtained.  This will return undefined if google oauth is not
+                // configured.
+                const googleToken = getCurrentGoogleAccessToken();
+                if (googleToken && googleToken.expires_at > Date.now()) {
+                    return googleToken.access_token
+                }
+            }
+        }
+
+        /**
+         * This method should only be called when it is known the server supports HEAD requests.  It is used to recover
+         * from 416 errors from out-of-spec WRT range request servers.  Notably Globus.
+         * * *
+         * @param url
+         * @param options
+         * @returns {Promise<unknown>}
+         */
+        async getContentLength(url, options) {
+            options = options || {};
+            options.method = 'HEAD';
+            options.requestedHeaders = ['content-length'];
+            const headerMap = await this._loadURL(url, options);
+            const contentLengthString = headerMap['content-length'];
+            return contentLengthString ? Number.parseInt(contentLengthString) : 0
+        }
+
+    }
+
+    function isGoogleStorageSigned(url) {
+        return url.indexOf("X-Goog-Signature") > -1
+    }
+
+
+    /**
+     * Return a Google oAuth token, triggering a sign in if required.   This method should not be called until we know
+     * a token is required, that is until we've tried the url and received a 401, 403, or 404.
+     *
+     * @param url
+     * @returns the oauth token
+     */
+    async function fetchGoogleAccessToken(url) {
+        if (isInitialized()) {
+            const scope = getScopeForURL(url);
+            const access_token = await getAccessToken(scope);
+            return access_token
+        } else {
+            throw Error(
+                `Authorization is required, but Google oAuth has not been initalized. Contact your site administrator for assistance.`)
+        }
+    }
+
+    /**
+     * Return the current google access token, if one exists.  Do not triger signOn or request additional scopes.
+     * @returns {undefined|access_token}
+     */
+    function getCurrentGoogleAccessToken() {
+        if (isInitialized()) {
+            const access_token = getCurrentAccessToken();
+            return access_token
+        } else {
+            return undefined
+        }
+    }
+
+    function addOauthHeaders(headers, acToken) {
+        if (acToken) {
+            headers["Cache-Control"] = "no-cache";
+            headers["Authorization"] = "Bearer " + acToken;
+        }
+        return headers
+    }
+
+
+    function addApiKey(url) {
+        let apiKey = igvxhr.apiKey;
+        if (!apiKey && typeof gapi !== "undefined") {
+            apiKey = gapi.apiKey;
+        }
+        if (apiKey !== undefined && !url.includes("key=")) {
+            const paramSeparator = url.includes("?") ? "&" : "?";
+            url = url + paramSeparator + "key=" + apiKey;
+        }
+        return url
+    }
+
+    function addTeamDrive(url) {
+        if (url.includes("supportsTeamDrive")) {
+            return url
+        } else {
+            const paramSeparator = url.includes("?") ? "&" : "?";
+            url = url + paramSeparator + "supportsTeamDrive=true";
+        }
+    }
+
+    /**
+     * Perform some well-known url mappings.
+     * @param url
+     */
+    function mapUrl$1(url) {
+
+        if (url.startsWith("https://www.dropbox.com")) {
+            return url.replace("//www.dropbox.com", "//dl.dropboxusercontent.com")
+        } else if (url.startsWith("https://drive.google.com")) {
+            return getDriveDownloadURL(url)
+        } else if (url.includes("//www.broadinstitute.org/igvdata")) {
+            return url.replace("//www.broadinstitute.org/igvdata", "//data.broadinstitute.org/igvdata")
+        } else if (url.includes("//igvdata.broadinstitute.org")) {
+            return url.replace("//igvdata.broadinstitute.org", "//s3.amazonaws.com/igv.broadinstitute.org")
+        } else if (url.includes("//igv.genepattern.org")) {
+            return url.replace("//igv.genepattern.org", "//igv-genepattern-org.s3.amazonaws.com")
+        } else if (url.startsWith("ftp://ftp.ncbi.nlm.nih.gov/geo")) {
+            return url.replace("ftp://", "https://")
+        } else {
+            return url
+        }
+    }
+
+
+    function arrayBufferToString(arraybuffer) {
+
+        let plain;
+        if (isgzipped(arraybuffer)) {
+            plain = ungzip_blocks(arraybuffer);
+        } else {
+            plain = new Uint8Array(arraybuffer);
+        }
+
+        if ('TextDecoder' in getGlobalObject()) {
+            return new TextDecoder().decode(plain)
+        } else {
+            return decodeUTF8(plain)
+        }
+    }
+
+    /**
+     * Use when TextDecoder is not available (primarily IE).
+     *
+     * From: https://gist.github.com/Yaffle/5458286
+     *
+     * @param octets
+     * @returns {string}
+     */
+    function decodeUTF8(octets) {
+        var string = "";
+        var i = 0;
+        while (i < octets.length) {
+            var octet = octets[i];
+            var bytesNeeded = 0;
+            var codePoint = 0;
+            if (octet <= 0x7F) {
+                bytesNeeded = 0;
+                codePoint = octet & 0xFF;
+            } else if (octet <= 0xDF) {
+                bytesNeeded = 1;
+                codePoint = octet & 0x1F;
+            } else if (octet <= 0xEF) {
+                bytesNeeded = 2;
+                codePoint = octet & 0x0F;
+            } else if (octet <= 0xF4) {
+                bytesNeeded = 3;
+                codePoint = octet & 0x07;
+            }
+            if (octets.length - i - bytesNeeded > 0) {
+                var k = 0;
+                while (k < bytesNeeded) {
+                    octet = octets[i + k + 1];
+                    codePoint = (codePoint << 6) | (octet & 0x3F);
+                    k += 1;
+                }
+            } else {
+                codePoint = 0xFFFD;
+                bytesNeeded = octets.length - i;
+            }
+            string += String.fromCodePoint(codePoint);
+            i += bytesNeeded + 1;
+        }
+        return string
+    }
+
+
+    function getGlobalObject() {
+        if (typeof self !== 'undefined') {
+            return self
+        }
+        if (typeof global !== 'undefined') {
+            return global
+        } else {
+            return window
+        }
+    }
+
+
+    const igvxhr = new IGVXhr();
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    /** An implementation of an interval tree, following the explanation.
+     * from CLR.
+     *
+     * Public interface:
+     *   Constructor  IntervalTree
+     *   Insertion    insert
+     *   Search       findOverlapping
+     */
+
+    var BLACK = 1;
+    var RED = 2;
+
+    var NIL = {};
+    NIL.color = BLACK;
+    NIL.parent = NIL;
+    NIL.left = NIL;
+    NIL.right = NIL;
+
+
+    class IntervalTree {
+
+        constructor() {
+            this.root = NIL;
+        }
+
+        insert(start, end, value) {
+
+            var interval = new Interval(start, end, value);
+            var x = new Node(interval);
+            this.treeInsert(x);
+            x.color = RED;
+            while (x !== this.root && x.parent.color === RED) {
+                if (x.parent === x.parent.parent.left) {
+                    let y = x.parent.parent.right;
+                    if (y.color === RED) {
+                        x.parent.color = BLACK;
+                        y.color = BLACK;
+                        x.parent.parent.color = RED;
+                        x = x.parent.parent;
+                    } else {
+                        if (x === x.parent.right) {
+                            x = x.parent;
+                            leftRotate.call(this, x);
+                        }
+                        x.parent.color = BLACK;
+                        x.parent.parent.color = RED;
+                        rightRotate.call(this, x.parent.parent);
+                    }
+                } else {
+                    let y = x.parent.parent.left;
+                    if (y.color === RED) {
+                        x.parent.color = BLACK;
+                        y.color = BLACK;
+                        x.parent.parent.color = RED;
+                        x = x.parent.parent;
+                    } else {
+                        if (x === x.parent.left) {
+                            x = x.parent;
+                            rightRotate.call(this, x);
+                        }
+                        x.parent.color = BLACK;
+                        x.parent.parent.color = RED;
+                        leftRotate.call(this, x.parent.parent);
+                    }
+                }
+            }
+            this.root.color = BLACK;
+        }
+
+        /**
+         *
+         * @param start - query interval
+         * @param end - query interval
+         * @returns Array of all intervals overlapping the query region
+         */
+        findOverlapping(start, end) {
+
+
+            var searchInterval = new Interval(start, end, 0);
+
+            if (this.root === NIL) return [];
+
+            var intervals = searchAll.call(this, searchInterval, this.root, []);
+
+            if (intervals.length > 1) {
+                intervals.sort(function (i1, i2) {
+                    return i1.low - i2.low;
+                });
+            }
+
+            return intervals;
+        }
+
+        /**
+         * Dump info on intervals to console.  For debugging.
+         */
+        logIntervals() {
+
+            logNode(this.root, 0);
+
+            function logNode(node, indent) {
+
+                var space = "";
+                for (var i = 0; i < indent; i++) space += " ";
+                console.log(space + node.interval.low + " " + node.interval.high); // + " " + (node.interval.value ? node.interval.value : " null"));
+
+                indent += 5;
+
+                if (node.left !== NIL) logNode(node.left, indent);
+                if (node.right !== NIL) logNode(node.right, indent);
+            }
+
+        }
+
+        mapIntervals(func) {
+
+            applyInterval(this.root);
+
+            function applyInterval(node) {
+
+                func(node.interval);
+
+                if (node.left !== NIL) applyInterval(node.left);
+                if (node.right !== NIL) applyInterval(node.right);
+            }
+        }
+
+
+        /**
+         * Note:  Does not maintain RB constraints,  this is done post insert
+         *
+         * @param x  a Node
+         */
+        treeInsert(x) {
+            var node = this.root;
+            var y = NIL;
+            while (node !== NIL) {
+                y = node;
+                if (x.interval.low <= node.interval.low) {
+                    node = node.left;
+                } else {
+                    node = node.right;
+                }
+            }
+            x.parent = y;
+
+            if (y === NIL) {
+                this.root = x;
+                x.left = x.right = NIL;
+            } else {
+                if (x.interval.low <= y.interval.low) {
+                    y.left = x;
+                } else {
+                    y.right = x;
+                }
+            }
+
+            applyUpdate.call(this, x);
+        }
+    }
+
+    function searchAll(interval, node, results) {
+
+        if (node.interval.overlaps(interval)) {
+            results.push(node.interval);
+        }
+
+        if (node.left !== NIL && node.left.max >= interval.low) {
+            searchAll.call(this, interval, node.left, results);
+        }
+
+        if (node.right !== NIL && node.right.min <= interval.high) {
+            searchAll.call(this, interval, node.right, results);
+        }
+
+        return results;
+    }
+
+    function leftRotate(x) {
+        var y = x.right;
+        x.right = y.left;
+        if (y.left !== NIL) {
+            y.left.parent = x;
+        }
+        y.parent = x.parent;
+        if (x.parent === NIL) {
+            this.root = y;
+        } else {
+            if (x.parent.left === x) {
+                x.parent.left = y;
+            } else {
+                x.parent.right = y;
+            }
+        }
+        y.left = x;
+        x.parent = y;
+
+        applyUpdate.call(this, x);
+        // no need to apply update on y, since it'll y is an ancestor
+        // of x, and will be touched by applyUpdate().
+    }
+
+
+    function rightRotate(x) {
+        var y = x.left;
+        x.left = y.right;
+        if (y.right !== NIL) {
+            y.right.parent = x;
+        }
+        y.parent = x.parent;
+        if (x.parent === NIL) {
+            this.root = y;
+        } else {
+            if (x.parent.right === x) {
+                x.parent.right = y;
+            } else {
+                x.parent.left = y;
+            }
+        }
+        y.right = x;
+        x.parent = y;
+
+
+        applyUpdate.call(this, x);
+        // no need to apply update on y, since it'll y is an ancestor
+        // of x, and will be touched by applyUpdate().
+    }
+
+
+    // Applies the statistic update on the node and its ancestors.
+    function applyUpdate(node) {
+        while (node !== NIL) {
+            var nodeMax = node.left.max > node.right.max ? node.left.max : node.right.max;
+            var intervalHigh = node.interval.high;
+            node.max = nodeMax > intervalHigh ? nodeMax : intervalHigh;
+
+            var nodeMin = node.left.min < node.right.min ? node.left.min : node.right.min;
+            var intervalLow = node.interval.low;
+            node.min = nodeMin < intervalLow ? nodeMin : intervalLow;
+
+            node = node.parent;
+        }
+    }
+
+
+    class Interval {
+        constructor(low, high, value) {
+            this.low = low;
+            this.high = high;
+            this.value = value;
+        }
+
+        equals(other) {
+            if (!other) {
+                return false;
+            }
+            if (this === other) {
+                return true;
+            }
+            return (this.low === other.low &&
+                this.high === other.high);
+
+        }
+
+        compareTo(other) {
+            if (this.low < other.low)
+                return -1;
+            if (this.low > other.low)
+                return 1;
+
+            if (this.high < other.high)
+                return -1;
+            if (this.high > other.high)
+                return 1;
+
+            return 0;
+        }
+
+        /**
+         * Returns true if this interval overlaps the other.
+         */
+        overlaps(other) {
+                return (this.low <= other.high && other.low <= this.high);
+        }
+    }
+
+    function Node(interval) {
+        this.parent = NIL;
+        this.left = NIL;
+        this.right = NIL;
+        this.interval = interval;
+        this.color = RED;
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    /**
+     * Object for caching lists of features.  Supports effecient queries for sub-range  (chr, start, end)
+     *
+     * @param featureList
+     * @param The genomic range spanned by featureList (optional)
+     * @constructor
+     */
+
+    class FeatureCache$1 {
+
+        constructor(featureList, genome, range) {
+
+            featureList = featureList || [];
+            this.treeMap = this.buildTreeMap(featureList, genome);
+            this.range = range;
+            this.count = featureList.length;
+        }
+
+        containsRange(genomicRange) {
+            // No range means cache contains all features
+            return (this.range === undefined || this.range.contains(genomicRange.chr, genomicRange.start, genomicRange.end));
+        }
+
+        queryFeatures(chr, start, end) {
+
+            const tree = this.treeMap[chr];
+
+            if (!tree) return [];
+
+            const intervals = tree.findOverlapping(start, end);
+
+            if (intervals.length === 0) {
+                return [];
+            } else {
+                // Trim the list of features in the intervals to those
+                // overlapping the requested range.
+                // Assumption: features are sorted by start position
+
+                const featureList = [];
+                const all = this.allFeatures[chr];
+                if (all) {
+                    for (let interval of intervals) {
+                        const indexRange = interval.value;
+                        for (let i = indexRange.start; i < indexRange.end; i++) {
+                            let feature = all[i];
+                            if (feature.start > end) break;
+                            else if (feature.end >= start) {
+                                featureList.push(feature);
+                            }
+                        }
+                    }
+                    featureList.sort(function (a, b) {
+                        return a.start - b.start;
+                    });
+                }
+                return featureList;
+            }
+        };
+
+        /**
+         * Returns all features, unsorted.
+         *
+         * @returns {Array}
+         */
+        getAllFeatures() {
+            return this.allFeatures;
+        }
+
+        buildTreeMap(featureList, genome) {
+
+            const treeMap = {};
+            const chromosomes = [];
+            this.allFeatures = {};
+
+            if (featureList) {
+                for (let feature of featureList) {
+
+                    let chr = feature.chr;
+                    // Translate to "official" name
+                    if (genome) {
+                        chr = genome.getChromosomeName(chr);
+                    }
+
+                    let geneList = this.allFeatures[chr];
+                    if (!geneList) {
+                        chromosomes.push(chr);
+                        geneList = [];
+                        this.allFeatures[chr] = geneList;
+                    }
+                    geneList.push(feature);
+                }
+
+
+                // Now build interval tree for each chromosome
+                for (let chr of chromosomes) {
+                    const chrFeatures = this.allFeatures[chr];
+                    chrFeatures.sort(function (f1, f2) {
+                        return (f1.start === f2.start ? 0 : (f1.start > f2.start ? 1 : -1));
+                    });
+                    treeMap[chr] = buildIntervalTree$1(chrFeatures);
+                }
+            }
+
+            return treeMap;
+        }
+    }
+
+    /**
+     * Build an interval tree from the feature list for fast interval based queries.   We lump features in groups
+     * of 10, or total size / 100,   to reduce size of the tree.
+     *
+     * @param featureList
+     */
+    function buildIntervalTree$1(featureList) {
+
+        const tree = new IntervalTree();
+        const len = featureList.length;
+        const chunkSize = Math.max(10, Math.round(len / 10));
+
+        for (let i = 0; i < len; i += chunkSize) {
+            const e = Math.min(len, i + chunkSize);
+            const subArray = new IndexRange(i, e); //featureList.slice(i, e);
+            const iStart = featureList[i].start;
+            //
+            let iEnd = iStart;
+            for (let j = i; j < e; j++) {
+                iEnd = Math.max(iEnd, featureList[j].end);
+            }
+            tree.insert(iStart, iEnd, subArray);
+        }
+
+        return tree;
+    }
+
+
+    class IndexRange {
+        constructor(start, end) {
+            this.start = start;
+            this.end = end;
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2017 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const FeatureUtils = {
+
+        packFeatures: function (features, maxRows, sorted) {
+
+            var start;
+            var end;
+
+            if (!features) return;
+
+            maxRows = maxRows || 10000;
+
+            if (!sorted) {
+                features.sort(function (a, b) {
+                    return a.start - b.start;
+                });
+            }
+
+
+            if (features.length === 0) {
+                return [];
+
+            } else {
+
+                var bucketList = [],
+                    allocatedCount = 0,
+                    lastAllocatedCount = 0,
+                    nextStart,
+                    row,
+                    index,
+                    bucket,
+                    feature,
+                    gap = 2,
+                    bucketStart;
+
+                start = features[0].start;
+                end = features[features.length - 1].start;
+
+                bucketStart = Math.max(start, features[0].start);
+                nextStart = bucketStart;
+
+                features.forEach(function (alignment) {
+
+                    var buckListIndex = Math.max(0, alignment.start - bucketStart);
+                    if (bucketList[buckListIndex] === undefined) {
+                        bucketList[buckListIndex] = [];
+                    }
+                    bucketList[buckListIndex].push(alignment);
+                });
+
+
+                row = 0;
+
+
+                while (allocatedCount < features.length && row <= maxRows) {
+
+
+                    while (nextStart <= end) {
+
+                        bucket = undefined;
+
+                        while (!bucket && nextStart <= end) {
+
+                            index = nextStart - bucketStart;
+                            if (bucketList[index] === undefined) {
+                                ++nextStart;                     // No buckets at this index
+                            } else {
+                                bucket = bucketList[index];
+                            }
+
+                        } // while (bucket)
+
+                        if (!bucket) {
+                            break;
+                        }
+                        feature = bucket.pop();
+                        if (0 === bucket.length) {
+                            bucketList[index] = undefined;
+                        }
+
+                        feature.row = row;
+
+                        nextStart = feature.end + gap;
+                        ++allocatedCount;
+
+                    } // while (nextStart)
+
+                    row++;
+                    nextStart = bucketStart;
+
+                    if (allocatedCount === lastAllocatedCount) break;   // Protect from infinite loops
+
+                    lastAllocatedCount = allocatedCount;
+
+                } // while (allocatedCount)
+
+            }
+        },
+
+
+        /**
+         * Find features overlapping the given interval.  It is assumed that all features share the same chromosome.
+         *
+         * TODO -- significant overlap with FeatureCache, refactor to combine
+         *
+         * @param featureList
+         * @param start
+         * @param end
+         */
+        findOverlapping: function (featureList, start, end) {
+
+            if (!featureList || featureList.length === 0) {
+                return [];
+            } else {
+                const tree = buildIntervalTree(featureList);
+                const intervals = tree.findOverlapping(start, end);
+
+                if (intervals.length === 0) {
+                    return [];
+                } else {
+                    // Trim the list of features in the intervals to those
+                    // overlapping the requested range.
+                    // Assumption: features are sorted by start position
+
+                    featureList = [];
+
+                    intervals.forEach(function (interval) {
+                        const intervalFeatures = interval.value;
+                        const len = intervalFeatures.length;
+                        for (let i = 0; i < len; i++) {
+                            const feature = intervalFeatures[i];
+                            if (feature.start > end) break;
+                            else if (feature.end > start) {
+                                featureList.push(feature);
+                            }
+                        }
+                    });
+
+                    featureList.sort(function (a, b) {
+                        return a.start - b.start;
+                    });
+
+                    return featureList;
+                }
+            }
+
+        }
+    };
+
+
+    /**
+     * Build an interval tree from the feature list for fast interval based queries.   We lump features in groups
+     * of 10, or total size / 100,   to reduce size of the tree.
+     *
+     * @param featureList
+     */
+    function buildIntervalTree(featureList) {
+
+        const tree = new IntervalTree();
+        const len = featureList.length;
+        const chunkSize = Math.max(10, Math.round(len / 100));
+
+        featureList.sort(function (f1, f2) {
+            return (f1.start === f2.start ? 0 : (f1.start > f2.start ? 1 : -1));
+        });
+
+        for (let i = 0; i < len; i += chunkSize) {
+            const e = Math.min(len, i + chunkSize);
+            const subArray = featureList.slice(i, e);
+            const iStart = subArray[0].start;
+            let iEnd = iStart;
+            subArray.forEach(function (feature) {
+                iEnd = Math.max(iEnd, feature.end);
+            });
+            tree.insert(iStart, iEnd, subArray);
+        }
+
+        return tree;
+    }
+
+    const appleCrayonRGBPalette =
+        {
+            cantaloupe: {r: 255, g: 206, b: 110},
+            honeydew: {r: 206, g: 250, b: 110},
+            spindrift: {r: 104, g: 251, b: 208},
+            sky: {r: 106, g: 207, b: 255},
+            lavender: {r: 210, g: 120, b: 255},
+            carnation: {r: 255, g: 127, b: 211},
+            licorice: {r: 0, g: 0, b: 0},
+            snow: {r: 255, g: 255, b: 255},
+            salmon: {r: 255, g: 114, b: 110},
+            banana: {r: 255, g: 251, b: 109},
+            flora: {r: 104, g: 249, b: 110},
+            ice: {r: 104, g: 253, b: 255},
+            orchid: {r: 110, g: 118, b: 255},
+            bubblegum: {r: 255, g: 122, b: 255},
+            lead: {r: 30, g: 30, b: 30},
+            mercury: {r: 232, g: 232, b: 232},
+            tangerine: {r: 255, g: 136, b: 2},
+            lime: {r: 131, g: 249, b: 2},
+            sea_foam: {r: 3, g: 249, b: 135},
+            aqua: {r: 0, g: 140, b: 255},
+            grape: {r: 137, g: 49, b: 255},
+            strawberry: {r: 255, g: 41, b: 135},
+            tungsten: {r: 58, g: 58, b: 58},
+            silver: {r: 208, g: 208, b: 208},
+            maraschino: {r: 255, g: 33, b: 1},
+            lemon: {r: 255, g: 250, b: 3},
+            spring: {r: 5, g: 248, b: 2},
+            turquoise: {r: 0, g: 253, b: 255},
+            blueberry: {r: 0, g: 46, b: 255},
+            magenta: {r: 255, g: 57, b: 255},
+            iron: {r: 84, g: 84, b: 83},
+            magnesium: {r: 184, g: 184, b: 184},
+            mocha: {r: 137, g: 72, b: 0},
+            fern: {r: 69, g: 132, b: 1},
+            moss: {r: 1, g: 132, b: 72},
+            ocean: {r: 0, g: 74, b: 136},
+            eggplant: {r: 73, g: 26, b: 136},
+            maroon: {r: 137, g: 22, b: 72},
+            steel: {r: 110, g: 110, b: 110},
+            aluminum: {r: 160, g: 159, b: 160},
+            cayenne: {r: 137, g: 17, b: 0},
+            aspargus: {r: 136, g: 133, b: 1},
+            clover: {r: 2, g: 132, b: 1},
+            teal: {r: 0, g: 134, b: 136},
+            midnight: {r: 0, g: 24, b: 136},
+            plum: {r: 137, g: 30, b: 136},
+            tin: {r: 135, g: 134, b: 135},
+            nickel: {r: 136, g: 135, b: 135}
+        };
+
+    function appleCrayonRGB(name) {
+        const {r, g, b} = appleCrayonRGBPalette[name];
+        return `rgb(${r},${g},${b})`
+    }
+
+    function appleCrayonRGBA(name, alpha) {
+        const {r, g, b} = appleCrayonRGBPalette[name];
+        return `rgba(${r},${g},${b},${alpha})`
+    }
+
+    const colorPalettes = {
+
+        Set1:
+            [
+                "rgb(228,26,28)",
+                "rgb(55,126,184)",
+                "rgb(77,175,74)",
+                "rgb(166,86,40)",
+                "rgb(152,78,163)",
+                "rgb(255,127,0)",
+                "rgb(247,129,191)",
+                "rgb(153,153,153)",
+                "rgb(255,255,51)"
+            ],
+
+        Dark2:
+            [
+                "rgb(27,158,119)",
+                "rgb(217,95,2)",
+                "rgb(117,112,179)",
+                "rgb(231,41,138)",
+                "rgb(102,166,30)",
+                "rgb(230,171,2)",
+                "rgb(166,118,29)",
+                "rgb(102,102,102)"
+            ],
+
+        Set2:
+            [
+                "rgb(102, 194,165)",
+                "rgb(252,141,98)",
+                "rgb(141,160,203)",
+                "rgb(231,138,195)",
+                "rgb(166,216,84)",
+                "rgb(255,217,47)",
+                "rgb(229,196,148)",
+                "rgb(179,179,179)"
+            ],
+
+        Set3:
+            [
+                "rgb(141,211,199)",
+                "rgb(255,255,179)",
+                "rgb(190,186,218)",
+                "rgb(251,128,114)",
+                "rgb(128,177,211)",
+                "rgb(253,180,98)",
+                "rgb(179,222,105)",
+                "rgb(252,205,229)",
+                "rgb(217,217,217)",
+                "rgb(188,128,189)",
+                "rgb(204,235,197)",
+                "rgb(255,237,111)"
+            ],
+
+        Pastel1:
+            [
+                "rgb(251,180,174)",
+                "rgb(179,205,227)",
+                "rgb(204,235,197)",
+                "rgb(222,203,228)",
+                "rgb(254,217,166)",
+                "rgb(255,255,204)",
+                "rgb(229,216,189)",
+                "rgb(253,218,236)"
+            ],
+
+        Pastel2:
+            [
+                "rgb(173,226,207)",
+                "rgb(253,205,172)",
+                "rgb(203,213,232)",
+                "rgb(244,202,228)",
+                "rgb(230,245,201)",
+                "rgb(255,242,174)",
+                "rgb(243,225,206)"
+            ],
+
+        Accent:
+            [
+                "rgb(127,201,127)",
+                "rgb(190,174,212)",
+                "rgb(253,192,134)",
+                "rgb(255,255,153)",
+                "rgb(56,108,176)",
+                "rgb(240,2,127)",
+                "rgb(191,91,23)"
+            ]
+    };
+
+    class PaletteColorTable {
+
+        constructor(palette) {
+            this.colors = colorPalettes[palette];
+            if (!Array.isArray(this.colors)) this.colors = [];
+            this.colorTable = {};
+            this.nextIdx = 0;
+            this.colorGenerator = new RandomColorGenerator();
+        }
+
+        getColor(key) {
+            if (!this.colorTable.hasOwnProperty(key)) {
+                if (this.nextIdx < this.colors.length) {
+                    this.colorTable[key] = this.colors[this.nextIdx];
+                } else {
+                    this.colorTable[key] = this.colorGenerator.get();
+                }
+                this.nextIdx++;
+            }
+            return this.colorTable[key]
+        }
+    }
+
+    class ColorTable {
+        constructor(colors) {
+            this.colorTable = colors || {};
+            this.nextIdx = 0;
+            this.colorGenerator = new RandomColorGenerator();
+        }
+
+        getColor(key) {
+            if (!this.colorTable.hasOwnProperty(key)) {
+                if (this.colorTable.hasOwnProperty("*")) {
+                    return this.colorTable["*"]
+                }
+                this.colorTable[key] = this.colorGenerator.get();
+            }
+            return this.colorTable[key]
+        }
+    }
+
+    // Random color generator from https://github.com/sterlingwes/RandomColor/blob/master/rcolor.js
+    // Free to use & distribute under the MIT license
+    // Wes Johnson (@SterlingWes)
+    //
+    // inspired by http://martin.ankerl.com/2009/12/09/how-to-create-random-colors-programmatically/
+    function RandomColorGenerator() {
+        this.hue = Math.random();
+        this.goldenRatio = 0.618033988749895;
+        this.hexwidth = 2;
+    }
+
+    RandomColorGenerator.prototype.hsvToRgb = function (h, s, v) {
+        var h_i = Math.floor(h * 6),
+            f = h * 6 - h_i,
+            p = v * (1 - s),
+            q = v * (1 - f * s),
+            t = v * (1 - (1 - f) * s),
+            r = 255,
+            g = 255,
+            b = 255;
+        switch (h_i) {
+            case 0:
+                r = v, g = t, b = p;
+                break
+            case 1:
+                r = q, g = v, b = p;
+                break
+            case 2:
+                r = p, g = v, b = t;
+                break
+            case 3:
+                r = p, g = q, b = v;
+                break
+            case 4:
+                r = t, g = p, b = v;
+                break
+            case 5:
+                r = v, g = p, b = q;
+                break
+        }
+        return [Math.floor(r * 256), Math.floor(g * 256), Math.floor(b * 256)]
+    };
+
+    RandomColorGenerator.prototype.padHex = function (str) {
+        if (str.length > this.hexwidth) return str
+        return new Array(this.hexwidth - str.length + 1).join('0') + str
+    };
+
+    RandomColorGenerator.prototype.get = function (saturation, value) {
+        this.hue += this.goldenRatio;
+        this.hue %= 1;
+        if (typeof saturation !== "number") saturation = 0.5;
+        if (typeof value !== "number") value = 0.95;
+        var rgb = this.hsvToRgb(this.hue, saturation, value);
+
+        return "#" + this.padHex(rgb[0].toString(16))
+            + this.padHex(rgb[1].toString(16))
+            + this.padHex(rgb[2].toString(16))
+
+    };
+
+    new RandomColorGenerator();
+
+    function randomRGB$1(min, max) {
+
+        min = IGVMath.clamp(min, 0, 255);
+        max = IGVMath.clamp(max, 0, 255);
+
+        const r = Math.round(Math.random() * (max - min) + min).toString(10);
+        const g = Math.round(Math.random() * (max - min) + min).toString(10);
+        const b = Math.round(Math.random() * (max - min) + min).toString(10);
+        return `rgb(${r},${g},${b})`
+
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of ctx software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and ctx permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+
+    const IGVGraphics = {
+
+        configureHighDPICanvas: function (ctx, w, h) {
+
+            const scaleFactor = window.devicePixelRatio;
+            // const scaleFactor = 1
+
+            ctx.canvas.style.width = (`${w}px`);
+            ctx.canvas.width = Math.floor(scaleFactor * w);
+
+            ctx.canvas.style.height = (`${h}px`);
+            ctx.canvas.height = Math.floor(scaleFactor * h);
+
+            ctx.scale(scaleFactor, scaleFactor);
+
+        },
+
+        setProperties: function (ctx, properties) {
+
+            for (var key in properties) {
+                if (properties.hasOwnProperty(key)) {
+                    var value = properties[key];
+                    ctx[key] = value;
+                }
+            }
+        },
+
+        strokeLine: function (ctx, x1, y1, x2, y2, properties) {
+
+            x1 = Math.floor(x1) + 0.5;
+            y1 = Math.floor(y1) + 0.5;
+            x2 = Math.floor(x2) + 0.5;
+            y2 = Math.floor(y2) + 0.5;
+
+            if (properties) {
+                ctx.save();
+                IGVGraphics.setProperties(ctx, properties);
+            }
+
+            ctx.beginPath();
+            ctx.moveTo(x1, y1);
+            ctx.lineTo(x2, y2);
+            ctx.stroke();
+
+            if (properties) ctx.restore();
+        },
+
+        fillRect: function (ctx, x, y, w, h, properties) {
+            x = Math.round(x);
+            y = Math.round(y);
+
+            if (properties) {
+                ctx.save();
+                IGVGraphics.setProperties(ctx, properties);
+            }
+
+            ctx.fillRect(x, y, w, h);
+
+            if (properties) ctx.restore();
+        },
+
+        fillPolygon: function (ctx, x, y, properties) {
+            if (properties) {
+                ctx.save();
+                IGVGraphics.setProperties(ctx, properties);
+            }
+            doPath(ctx, x, y);
+            ctx.fill();
+            if (properties) ctx.restore();
+        },
+
+        strokePolygon: function (ctx, x, y, properties) {
+            if (properties) {
+                ctx.save();
+                IGVGraphics.setProperties(ctx, properties);
+            }
+            doPath(ctx, x, y);
+            ctx.stroke();
+            if (properties) ctx.restore();
+        },
+
+        fillText: function (ctx, text, x, y, properties, transforms) {
+
+            if (properties || transforms) {
+                ctx.save();
+            }
+
+            if (properties) {
+                IGVGraphics.setProperties(ctx, properties);
+            }
+
+            if (transforms) {
+                // Slow path with context saving and extra translate
+                ctx.translate(x, y);
+
+                for (var transform in transforms) {
+                    var value = transforms[transform];
+
+                    // TODO: Add error checking for robustness
+                    if (transform === 'translate') {
+                        ctx.translate(value['x'], value['y']);
+                    }
+                    if (transform === 'rotate') {
+                        ctx.rotate(value['angle'] * Math.PI / 180);
+                    }
+                }
+
+                ctx.fillText(text, 0, 0);
+            } else {
+                ctx.fillText(text, x, y);
+            }
+
+            if (properties || transforms) ctx.restore();
+        },
+
+        strokeText: function (ctx, text, x, y, properties, transforms) {
+
+
+            if (properties || transforms) {
+                ctx.save();
+            }
+
+            if (properties) {
+                IGVGraphics.setProperties(ctx, properties);
+            }
+
+            if (transforms) {
+                ctx.translate(x, y);
+
+                for (var transform in transforms) {
+                    var value = transforms[transform];
+
+                    // TODO: Add error checking for robustness
+                    if (transform === 'translate') {
+                        ctx.translate(value['x'], value['y']);
+                    }
+                    if (transform === 'rotate') {
+                        ctx.rotate(value['angle'] * Math.PI / 180);
+                    }
+                }
+
+                ctx.strokeText(text, 0, 0);
+            } else {
+                ctx.strokeText(text, x, y);
+            }
+
+            if (properties || transforms) ctx.restore();
+        },
+
+        strokeCircle: function (ctx, x, y, radius, properties) {
+            if (properties) {
+                ctx.save();
+                IGVGraphics.setProperties(ctx, properties);
+            }
+            ctx.beginPath();
+            ctx.arc(x, y, radius, 0, 2 * Math.PI);
+            ctx.stroke();
+            if (properties) ctx.restore();
+        },
+
+        fillCircle: function (ctx, x, y, radius, properties) {
+            if (properties) {
+                ctx.save();
+                IGVGraphics.setProperties(ctx, properties);
+            }
+            ctx.beginPath();
+            ctx.arc(x, y, radius, 0, 2 * Math.PI);
+            ctx.fill();
+            if (properties) ctx.restore();
+        },
+
+        drawArrowhead: function (ctx, x, y, size, lineWidth) {
+
+            ctx.save();
+            if (!size) {
+                size = 5;
+            }
+            if (lineWidth) {
+                ctx.lineWidth = lineWidth;
+            }
+            ctx.beginPath();
+            ctx.moveTo(x, y - size / 2);
+            ctx.lineTo(x, y + size / 2);
+            ctx.lineTo(x + size, y);
+            ctx.lineTo(x, y - size / 2);
+            ctx.closePath();
+            ctx.fill();
+            ctx.restore();
+        },
+
+        dashedLine: function (ctx, x1, y1, x2, y2, dashLen, properties = {}) {
+            if (dashLen === undefined) dashLen = 2;
+            ctx.setLineDash([dashLen, dashLen]);
+            IGVGraphics.strokeLine(ctx, x1, y1, x2, y2, properties);
+            ctx.setLineDash([]);
+        },
+
+        roundRect: function (ctx, x, y, width, height, radius, fill, stroke) {
+
+            if (typeof stroke == "undefined") {
+                stroke = true;
+            }
+            if (typeof radius === "undefined") {
+                radius = 5;
+            }
+            ctx.beginPath();
+            ctx.moveTo(x + radius, y);
+            ctx.lineTo(x + width - radius, y);
+            ctx.quadraticCurveTo(x + width, y, x + width, y + radius);
+            ctx.lineTo(x + width, y + height - radius);
+            ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height);
+            ctx.lineTo(x + radius, y + height);
+            ctx.quadraticCurveTo(x, y + height, x, y + height - radius);
+            ctx.lineTo(x, y + radius);
+            ctx.quadraticCurveTo(x, y, x + radius, y);
+            ctx.closePath();
+            if (stroke) {
+                ctx.stroke();
+            }
+            if (fill) {
+                ctx.fill();
+            }
+        },
+        polygon: function (ctx, x, y, fill, stroke) {
+
+            if (typeof stroke == "undefined") {
+                stroke = true;
+            }
+
+            ctx.beginPath();
+            var len = x.length;
+            ctx.moveTo(x[0], y[0]);
+            for (var i = 1; i < len; i++) {
+                ctx.lineTo(x[i], y[i]);
+                // this.moveTo(x[i], y[i]);
+            }
+
+            ctx.closePath();
+            if (stroke) {
+                ctx.stroke();
+            }
+            if (fill) {
+                ctx.fill();
+            }
+        },
+
+        drawRandomColorVerticalLines: ctx => {
+            for (let x = 0; x < ctx.canvas.width; x++) {
+                IGVGraphics.fillRect(ctx, x, 0, 1, ctx.canvas.height, { fillStyle: randomRGB$1(100, 250) });
+            }
+        },
+
+        labelTransformWithContext: (ctx, exe) => {
+            ctx.translate(exe, 0);
+            ctx.scale(-1, 1);
+            ctx.translate(-exe, 0);
+        }
+
+    };
+
+    function doPath(ctx, x, y) {
+
+
+        var i, len = x.length;
+        for (i = 0; i < len; i++) {
+            x[i] = Math.round(x[i]);
+            y[i] = Math.round(y[i]);
+        }
+
+        ctx.beginPath();
+        ctx.moveTo(x[0], y[0]);
+        for (i = 1; i < len; i++) {
+            ctx.lineTo(x[i], y[i]);
+        }
+        ctx.closePath();
+    }
+
+    class Alert {
+        constructor(parent) {
+            this.dialog = new AlertDialog(parent);
+
+        }
+
+        present(alert, callback) {
+            this.dialog.present(alert, callback);
+        }
+    }
+
+    const FileFormats = {
+
+        gwascatalog: {
+            fields: [
+                'bin',
+                'chr',
+                'start',
+                'end',
+                'name',
+                'pubMedID',
+                'author',
+                'pubDate',
+                'journal',
+                'title',
+                'trait',
+                'initSample',
+                'replSample',
+                'region',
+                'genes',
+                'riskAllele',
+                'riskAlFreq',
+                'pValue',
+                'pValueDesc',
+                'orOrBeta',
+                'ci95',
+                'platform',
+                'cnv'
+            ]
+        },
+
+        wgrna: {
+            fields:
+                [
+                    'bin',
+                    'chr',
+                    'start',
+                    'end',
+                    'name',
+                    'score',
+                    'strand',
+                    'thickStart',
+                    'thickEnd',
+                    'type'
+                ]
+        },
+
+        cpgislandext: {
+            fields:
+
+                [
+                    'bin',
+                    'chr',
+                    'start',
+                    'end',
+                    'name',
+                    'length',
+                    'cpgNum',
+                    'gcNum',
+                    'perCpg',
+                    'perGc',
+                    'obsExp'
+                ]
+        },
+
+        clinVarMain: {
+            fields: [
+                'chr1',
+                'start',
+                'end',
+                'name',
+                'score',
+                'strand',
+                'thickStart',
+                'thickEnd',
+                'reserved',
+                'blockCount',  // Number of blocks
+                'blockSizes',  // Comma separated list of block sizes
+                'chromStarts', // Start positions relative to chromStart
+                'origName',    // NM_198053.2(CD247):c.462C>T (p.Asp154=)	ClinVar Variation Report
+                'clinSign',    // Likely benign	Clinical significance
+                'reviewStatus', // 	based on: criteria provided,single submitter	Review Status
+                'type',         // single nucleotide variant	Type of Variant
+                'geneId', 	    // CD247	Gene Symbol
+                'snpId',       //	181656780	dbSNP ID
+                'nsvId',       //		dbVar ID
+                'rcvAcc',      //	RCV000642347	ClinVar Allele Submission
+                'testedInGtr', //	N	Genetic Testing Registry
+                'phenotypeList', //	Immunodeficiency due to defect in cd3-zeta	Phenotypes
+                'phenotype', //	MedGen:C1857798, OMIM:610163	Phenotype identifiers
+                'origin', //	germline	Data origin
+                'assembly', //	GRCh37	Genome assembly
+                'cytogenetic', //	1q24.2	Cytogenetic status
+                'hgvsCod', //	NM_198053.2:c.462C>T	Nucleotide HGVS
+                'hgvsProt', //	NP_932170.1:p.Asp154=	Protein HGVS
+                'numSubmit', //	1	Number of submitters
+                'lastEval', //	Dec 19,2017	Last evaluation
+                'guidelines', //		Guidelines
+                'otherIds'
+            ]
+        }
+    };
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    /**
+     * Test if the given value is a string or number.  Not using typeof as it fails on boxed primitives.
+     *
+     * @param value
+     * @returns boolean
+     */
+
+    function isSimpleType(value) {
+        const simpleTypes = new Set(["boolean", "number", "string", "symbol"]);
+        const valueType = typeof value;
+        return (value !== undefined && (simpleTypes.has(valueType) || value.substring || value.toFixed))
+    }
+
+    function buildOptions(config, options) {
+
+        var defaultOptions = {
+            oauthToken: config.oauthToken,
+            headers: config.headers,
+            withCredentials: config.withCredentials,
+            filename: config.filename
+        };
+
+        return Object.assign(defaultOptions, options)
+    }
+
+    /**
+     * isMobile test from http://detectmobilebrowsers.com
+     * TODO -- improve UI design so this isn't neccessary
+     * @returns {boolean}
+     */
+
+    // igv.isMobile = function () {
+    //
+    //     const a = (navigator.userAgent || navigator.vendor || window.opera);
+    //     return (/(android|bb\d+|meego).+mobile|avantgo|bada\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(a) ||
+    //         /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\-(n|u)|c55\/|capi|ccwa|cdm\-|cell|chtm|cldc|cmd\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\-s|devi|dica|dmob|do(c|p)o|ds(12|\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\-|_)|g1 u|g560|gene|gf\-5|g\-mo|go(\.w|od)|gr(ad|un)|haie|hcit|hd\-(m|p|t)|hei\-|hi(pt|ta)|hp( i|ip)|hs\-c|ht(c(\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\-(20|go|ma)|i230|iac( |\-|\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\/)|klon|kpt |kwc\-|kyo(c|k)|le(no|xi)|lg( g|\/(k|l|u)|50|54|\-[a-w])|libw|lynx|m1\-w|m3ga|m50\/|ma(te|ui|xo)|mc(01|21|ca)|m\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\-2|po(ck|rt|se)|prox|psio|pt\-g|qa\-a|qc(07|12|21|32|60|\-[2-7]|i\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\-|oo|p\-)|sdk\/|se(c(\-|0|1)|47|mc|nd|ri)|sgh\-|shar|sie(\-|m)|sk\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\-|v\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\-|tdg\-|tel(i|m)|tim\-|t\-mo|to(pl|sh)|ts(70|m\-|m3|m5)|tx\-9|up(\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\-|your|zeto|zte\-/i.test(a.substr(0, 4)))
+    //
+    // }
+
+    const doAutoscale = function (features) {
+        var min, max;
+
+        if (features && features.length > 0) {
+            min = Number.MAX_VALUE;
+            max = -Number.MAX_VALUE;
+
+            for(let f of features) {
+                if (!Number.isNaN(f.value)) {
+                    min = Math.min(min, f.value);
+                    max = Math.max(max, f.value);
+                }
+            }
+
+            // Insure we have a zero baseline
+            if (max > 0) min = Math.min(0, min);
+            if (max < 0) max = 0;
+        } else {
+            // No features -- default
+            min = 0;
+            max = 100;
+        }
+
+        return {min: min, max: max}
+    };
+
+    const validateGenomicExtent = function (chromosomeLengthBP, genomicExtent, minimumBP) {
+
+        let ss = genomicExtent.start;
+        let ee = genomicExtent.end;
+
+        if (undefined === ee) {
+
+            ss -= minimumBP / 2;
+            ee = ss + minimumBP;
+
+            if (ee > chromosomeLengthBP) {
+                ee = chromosomeLengthBP;
+                ss = ee - minimumBP;
+            } else if (ss < 0) {
+                ss = 0;
+                ee = minimumBP;
+            }
+
+        } else if (ee - ss < minimumBP) {
+
+            const center = (ee + ss) / 2;
+
+            if (center - minimumBP / 2 < 0) {
+                ss = 0;
+                ee = ss + minimumBP;
+            } else if (center + minimumBP / 2 > chromosomeLengthBP) {
+                ee = chromosomeLengthBP;
+                ss = ee - minimumBP;
+            } else {
+                ss = center - minimumBP / 2;
+                ee = ss + minimumBP;
+            }
+        }
+
+        genomicExtent.start = Math.ceil(ss);
+        genomicExtent.end = Math.floor(ee);
+    };
+
+    /*!
+     * is-number <https://github.com/jonschlinkert/is-number>
+     *
+     * Copyright (c) 2014-present, Jon Schlinkert.
+     * Released under the MIT License.
+     */
+
+    const isNumber = function (num) {
+        if (typeof num === 'number') {
+            return num - num === 0
+        }
+        if (typeof num === 'string' && num.trim() !== '') {
+            return Number.isFinite ? Number.isFinite(+num) : isFinite(+num)
+        }
+        return false
+    };
+
+    async function getFilename$1(url) {
+        if (isString$2(url) && url.startsWith("https://drive.google.com")) {
+            // This will fail if Google API key is not defined
+            if (getApiKey() === undefined) {
+                throw Error("Google drive is referenced, but API key is not defined.  An API key is required for Google Drive access")
+            }
+            const json = await getDriveFileInfo(url);
+            return json.originalFileName || json.name
+        } else {
+            return getFilename$2(url)
+        }
+    }
+
+    function prettyBasePairNumber(raw) {
+
+        var denom,
+            units,
+            value,
+            floored;
+
+        if (raw > 1e7) {
+            denom = 1e6;
+            units = " mb";
+        } else if (raw > 1e4) {
+
+            denom = 1e3;
+            units = " kb";
+
+            value = raw / denom;
+            floored = Math.floor(value);
+            return numberFormatter$1(floored) + units
+        } else {
+            return numberFormatter$1(raw) + " bp"
+        }
+
+        value = raw / denom;
+        floored = Math.floor(value);
+
+        return floored.toString() + units
+    }
+
+
+    function isDataURL(obj) {
+        return (isString$2(obj) && obj.startsWith("data:"))
+    }
+
+    function createColumn(columnContainer, className) {
+        const column = domUtils.div({class: className});
+        columnContainer.appendChild(column);
+    }
+
+
+    function insertElementBefore(element, referenceNode) {
+        referenceNode.parentNode.insertBefore(element, referenceNode);
+    }
+
+    function insertElementAfter(element, referenceNode) {
+        referenceNode.parentNode.insertBefore(element, referenceNode.nextSibling);
+    }
+
+    /**
+     * Test to see if page is loaded in a secure context, that is by https or is localhost.
+     */
+    function isSecureContext() {
+        return window.location.protocol === "https:" || window.location.hostname === "localhost"
+    }
+
+    // reference: https://pretagteam.com/question/find-element-height-including-margin
+    function getElementAbsoluteHeight(element) {
+
+        // Get the DOM Node if you pass in a string
+        element = (typeof element === 'string') ? document.querySelector(element) : element;
+
+        const styles = window.getComputedStyle(element);
+        const margin = parseFloat(styles['marginTop']) + parseFloat(styles['marginBottom']);
+        const height = element.offsetHeight;
+
+        return Math.ceil(margin + height);
+    }
+
+    /**
+     * Decoder for bedpe records.
+     *
+     * Bedpe format was created by Aaron Quinlan et al as part of the bedtools project.
+     * The spec is here:  https://bedtools.readthedocs.io/en/latest/content/general-usage.html,
+     *
+     * 1      2      3    4      5      6    7    8     9       10      11-
+     * chrom1 start1 end1 chrom2 start2 end2 name score strand1 strand2 <Any number of additional, user-defined fields>
+     *
+     * However there are off spec variants, an important one being a 7 column format with score in place of the standard
+     * name column.
+     *
+     * A common variant is a "hiccups" output file, which is standard bedpe with the exception of a header line
+     * of the form
+     *
+     * chr1    x1    x2    chr2    y1    y2    name    score    strand1    strand2    color    observed    expectedBL    expectedDonut    expectedH    expectedV    fdrBL    fdrDonut    fdrH    fdrV
+     *
+     * The "hiccups" output is apparently not standardized as this is found at ENCODE, with a non-helpful "tsv" extension
+     *
+     * chr1    x1    x2    chr2    y1    y2    color    observed    expectedBL    expectedDonut    expectedH    expectedV    fdrBL    fdrDonut    fdrH    fdrV    numCollapsed    centroid1    centroid2    radius
+     * chr9    136790000    136795000    chr9    136990000    136995000    0,255,255    101.0    31.100368    38.40316    56.948116    34.040756    1.1876738E-13    1.05936405E-13    2.5148233E-4    1.7220993E-13    1    136792500    136992500    25590
+     *
+     * The "hiccups" documentation specfies yet another set of column headers
+     * chromosome1    x1    x2    chromosome2    y1    y2    color    observed expected_bottom_left    expected_donut    expected_horizontal    expected_vertical fdr_bottom_left    fdr_donut    fdr_horizontal    fdr_vertical number_collapsed    centroid1    centroid2    radius
+     *
+     * @param tokens
+     * @param ignore
+     * @returns {{start1: number, end2: number, end1: number, chr1: *, chr2: *, start2: number}|undefined}
+     */
+
+    function decodeBedpe(tokens, header) {
+
+        if (tokens.length < 6) {
+            console.log("Skipping line: " + tokens.join(' '));
+            return undefined
+        }
+
+        var feature = {
+            chr1: tokens[0],
+            start1: Number.parseInt(tokens[1]),
+            end1: Number.parseInt(tokens[2]),
+            chr2: tokens[3],
+            start2: Number.parseInt(tokens[4]),
+            end2: Number.parseInt(tokens[5])
+        };
+
+        if (isNaN(feature.start1) || isNaN(feature.end1) || isNaN(feature.start2) || isNaN(feature.end2)) {
+            //throw Error(`Error parsing line: ${tokens.join('\t')}`);
+            return undefined
+        }
+
+        // Determine if this is a "hiccups" file.  Store result on "header" so it doesn't need repeated for every feature
+        if(header && header.hiccups === undefined) {
+            header.hiccups = header.columnNames ? isHiccups(header.columnNames) : false;
+        }
+        const hiccups = header && header.hiccups;
+        const stdColumns = hiccups ? 6 : 10;
+
+        if(!hiccups) {
+            if (tokens.length > 6 && tokens[6] !== ".") {
+                feature.name = tokens[6];
+            }
+
+            if (tokens.length > 7 && tokens[7] !== ".") {
+                feature.score = Number(tokens[7]);
+            }
+
+            if (tokens.length > 8 && tokens[8] !== ".") {
+                feature.strand1 = tokens[8];
+            }
+
+            if (tokens.length > 9 && tokens[9] !== ".") {
+                feature.strand2 = tokens[9];
+            }
+        }
+
+        // Optional extra columns
+        if (header) {
+            const colorColumn = header.colorColumn;
+            if (colorColumn && colorColumn < tokens.length) {
+                feature.color = IGVColor.createColorString(tokens[colorColumn]);
+            }
+            const thicknessColumn = header.thicknessColumn;
+            if (thicknessColumn && thicknessColumn < tokens.length) {
+                feature.thickness = tokens[thicknessColumn];
+            }
+
+            if (tokens.length > stdColumns && header.columnNames && header.columnNames.length === tokens.length) {
+                feature.extras = tokens.slice(stdColumns);
+            }
+        }
+
+
+        // Set total extent of feature
+        if (feature.chr1 === feature.chr2) {
+            feature.chr = feature.chr1;
+            feature.start = Math.min(feature.start1, feature.start2);
+            feature.end = Math.max(feature.end1, feature.end2);
+
+        }
+        return feature
+    }
+
+    /**
+     * Hack for non-standard bedPE formats, where numeric score can be in column 7 (name field from spec)
+     * @param features
+     */
+    function fixBedPE(features) {
+
+        if (features.length == 0) return
+
+        // Assume all features have same properties
+        const firstFeature = features[0];
+        if (firstFeature.score === undefined && firstFeature.name !== undefined) {
+            // Name field (col 7) is sometimes used for score.
+            for (let f of features) {
+                if (!(isNumber(f.name) || f.name === '.')) return
+            }
+            for (let f of features) {
+                f.score = Number(f.name);
+                delete f.name;
+            }
+        }
+
+        // Make copies of inter-chr features, one for each chromosome
+        const interChrFeatures = features.filter(f => f.chr1 !== f.chr2);
+        for (let f1 of interChrFeatures) {
+            const f2 = Object.assign({}, f1);
+            f2.dup = true;
+            features.push(f2);
+
+            f1.chr = f1.chr1;
+            f1.start = f1.start1;
+            f1.end = f1.end1;
+
+            f2.chr = f2.chr2;
+            f2.start = f2.start2;
+            f2.end = f2.end2;
+        }
+    }
+
+
+    /**
+     * Special decoder for Hic Domain files.   In these files feature1 == feature2, they are really bed records.
+     * @param tokens
+     * @param ignore
+     * @returns {*}
+     */
+    function decodeBedpeDomain(tokens, header) {
+
+        if (tokens.length < 8) return undefined
+
+        return {
+            chr: tokens[0],
+            start: Number.parseInt(tokens[1]),
+            end: Number.parseInt(tokens[2]),
+            color: IGVColor.createColorString(tokens[6]),
+            value: Number(tokens[7])
+        }
+    }
+
+    function isHiccups(columns) {
+        return columns && (columns.includes("fdrDonut") || columns.includes("fdr_donut"))
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const knownFileExtensions = new Set([
+
+        "narrowpeak",
+        "broadpeak",
+        "regionpeak",
+        "peaks",
+        "bedgraph",
+        "wig",
+        "gff3",
+        "gff",
+        "gtf",
+        "fusionjuncspan",
+        "refflat",
+        "seg",
+        "aed",
+        "bed",
+        "vcf",
+        "bb",
+        "bigbed",
+        "biginteract",
+        "biggenepred",
+        "bignarrowpeak",
+        "bw",
+        "bigwig",
+        "bam",
+        "tdf",
+        "refgene",
+        "genepred",
+        "genepredext",
+        "bedpe",
+        "bp",
+        "snp",
+        "rmsk",
+        "cram",
+        "gwas",
+        "maf",
+        "mut",
+        "tsv",
+        "hiccups",
+        "fasta",
+        "fa",
+        "fna",
+        "pytor"
+    ]);
+
+    /**
+     * Return a custom format object with the given name.
+     * @param name
+     * @returns {*}
+     */
+    function getFormat(name) {
+
+        if (FileFormats && FileFormats[name]) {
+            return expandFormat(FileFormats[name])
+        } else {
+            return undefined
+        }
+
+        function expandFormat(format) {
+
+            const fields = format.fields;
+            const keys = ['chr', 'start', 'end'];
+
+            for (let i = 0; i < fields.length; i++) {
+                for (let key of keys) {
+                    if (key === fields[i]) {
+                        format[key] = i;
+                    }
+                }
+            }
+
+            return format
+        }
+    }
+
+    function inferFileFormat(fn) {
+
+        var idx, ext;
+
+        fn = fn.toLowerCase();
+
+        // Special case -- UCSC refgene files
+        if (fn.endsWith("refgene.txt.gz") ||
+            fn.endsWith("refgene.txt.bgz") ||
+            fn.endsWith("refgene.txt") ||
+            fn.endsWith("refgene.sorted.txt.gz") ||
+            fn.endsWith("refgene.sorted.txt.bgz")) {
+            return "refgene"
+        }
+
+
+        //Strip parameters -- handle local files later
+        idx = fn.indexOf("?");
+        if (idx > 0) {
+            fn = fn.substr(0, idx);
+        }
+
+        //Strip aux extensions .gz, .tab, and .txt
+        if (fn.endsWith(".gz")) {
+            fn = fn.substr(0, fn.length - 3);
+        }
+
+        if (fn.endsWith(".txt") || fn.endsWith(".tab") || fn.endsWith(".bgz")) {
+            fn = fn.substr(0, fn.length - 4);
+        }
+
+
+        idx = fn.lastIndexOf(".");
+        ext = idx < 0 ? fn : fn.substr(idx + 1);
+
+        switch (ext) {
+            case "bw":
+                return "bigwig"
+            case "bb":
+                return "bigbed"
+            case "fasta":
+            case "fa":
+            case "fna":
+                return "fasta"
+            default:
+                if (knownFileExtensions.has(ext)) {
+                    return ext
+                } else {
+                    return undefined
+                }
+
+        }
+
+    }
+
+    function inferIndexPath(url, extension) {
+
+        if (isString$2(url)) {
+            if (url.includes("?")) {
+                const idx = url.indexOf("?");
+                return url.substring(0, idx) + "." + extension + url.substring(idx)
+            } else {
+                return url + "." + extension
+            }
+        } else {
+            return undefined
+        }
+    }
+
+
+    function inferTrackType(config) {
+
+        translateDeprecatedTypes(config);
+
+        if (config.type) {
+            return config.type
+        }
+
+        if (config.format) {
+            const format = config.format.toLowerCase();
+            switch (format) {
+                case "bw":
+                case "bigwig":
+                case "wig":
+                case "bedgraph":
+                case "tdf":
+                    return "wig"
+                case "vcf":
+                    return "variant"
+                case "seg":
+                    return "seg"
+                case "mut":
+                case "maf":
+                    return "mut"
+                case "bam":
+                case "cram":
+                    return "alignment"
+                case "hiccups":
+                case "bedpe":
+                case "bedpe-loop":
+                case "biginteract":
+                    return "interact"
+                case "bp":
+                    return "arc"
+                case "gwas":
+                    return "gwas"
+                case "bed":
+                case "bigbed":
+                case "bb":
+                case "biggenepred":
+                case "bignarrowpeak":
+                    return "bedtype"
+                case "fasta":
+                    return "sequence"
+                case "pytor":
+                    return "cnvpytor"
+                default:
+                    return "annotation"
+            }
+        }
+    }
+
+    function translateDeprecatedTypes(config) {
+
+        if (config.featureType) {  // Translate deprecated "feature" type
+            config.type = config.type || config.featureType;
+            config.featureType = undefined;
+        }
+        if ("junctions" === config.type) {
+            config.type = "junction";
+        } else if ("bed" === config.type) {
+            config.type = "annotation";
+            config.format = config.format || "bed";
+        } else if ("annotations" === config.type) {
+            config.type = "annotation";
+        } else if ("alignments" === config.type) {
+            config.type = "alignment";
+        } else if ("bam" === config.type) {
+            config.type = "alignment";
+            config.format = "bam";
+        } else if ("vcf" === config.type) {
+            config.type = "variant";
+            config.format = "vcf";
+        } else if ("t2d" === config.type) {
+            config.type = "gwas";
+        } else if ("FusionJuncSpan" === config.type && !config.format) {
+            config.format = "fusionjuncspan";
+        } else if ("aed" === config.type) {
+            config.type = "annotation";
+            config.format = config.format || "aed";
+        }
+    }
+
+    /**
+     * Attempt to infer the file format by reading a few lines from the header.  Currently this only supports "tsv" extensions,
+     * it was added specifically for "hiccups" type tsv files in ENCODE.  Might be expanded in the future.
+     *
+     * @param url
+     * @returns {Promise<void>}
+     */
+    async function inferFileFormatFromHeader(config) {
+
+        if (config.url) {
+            const firstBytes = await igvxhr.loadString(config.url, buildOptions(config, {range: {start: 0, size: 1000}}));
+            if(firstBytes) {
+                const columnNames = firstBytes.split('\n')[0].split('\t');
+                if(isHiccups(columnNames)) {
+                    return "hiccups"
+                }
+            }
+        }
+
+        return undefined
+
+    }
+
+    function registerFileFormats(name, fields) {
+        FileFormats[name] = {fields: fields};
+    }
+
+    var TrackUtils = /*#__PURE__*/Object.freeze({
+        __proto__: null,
+        knownFileExtensions: knownFileExtensions,
+        getFormat: getFormat,
+        inferFileFormat: inferFileFormat,
+        inferFileFormatFromHeader: inferFileFormatFromHeader,
+        inferTrackType: inferTrackType,
+        inferIndexPath: inferIndexPath,
+        registerFileFormats: registerFileFormats
+    });
+
+    const pairs =
+        [
+            ['A', 'T'],
+            ['G', 'C'],
+            ['Y', 'R'],
+            ['W', 'S'],
+            ['K', 'M'],
+            ['D', 'H'],
+            ['B', 'V']
+        ];
+
+    const complements = new Map();
+    for (let p of pairs) {
+        const p1 = p[0];
+        const p2 = p[1];
+        complements.set(p1, p2);
+        complements.set(p2, p1);
+        complements.set(p1.toLowerCase(), p2.toLowerCase());
+        complements.set(p2.toLowerCase(), p1.toLowerCase());
+    }
+
+    function reverseComplementSequence(sequence) {
+
+        let comp = '';
+        let idx = sequence.length;
+        while (idx-- > 0) {
+            const base = sequence[idx];
+            comp += complements.has(base) ? complements.get(base) : base;
+        }
+        return comp
+    }
+
+    class Chromosome {
+        constructor(name, order, bpLength) {
+            this.name = name;
+            this.order = order;
+            this.bpLength = bpLength;
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const splitLines$4 = splitLines$5;
+
+    const reservedProperties$1 = new Set(['fastaURL', 'indexURL', 'cytobandURL', 'indexed']);
+
+    class NonIndexedFasta {
+
+
+        constructor(reference) {
+
+            this.fastaURL = reference.fastaURL;
+            this.withCredentials = reference.withCredentials;
+            this.chromosomeNames = [];
+            this.chromosomes = {};
+            this.sequences = new Map();
+
+            // Build a track-like config object from the referenceObject
+            const config = {};
+            for (let key in reference) {
+                if (reference.hasOwnProperty(key) && !reservedProperties$1.has(key)) {
+                    config[key] = reference[key];
+                }
+            }
+            this.config = config;
+        }
+
+
+        async init() {
+            return this.loadAll()
+        }
+
+        async getSequence(chr, start, end) {
+
+            if (!this.sequences.has(chr)) {
+                return undefined
+            }
+
+            let seqSlice = this.sequences.get(chr).find(ss => ss.contains(start, end));
+            if (!seqSlice) {
+                seqSlice = this.sequences.get(chr).find(ss => ss.overlaps(start, end));
+                if (!seqSlice) {
+                    return undefined
+                }
+            }
+
+            start -= seqSlice.offset;
+            end -= seqSlice.offset;
+
+            let prefix = "";
+            if (start < 0) {
+                for (let i = start; i < Math.min(end, 0); i++) {
+                    prefix += "*";
+                }
+            }
+
+            if (end <= 0) {
+                return Promise.resolve(prefix)
+            }
+
+            const seq = seqSlice.sequence;
+            const seqEnd = Math.min(end, seq.length);
+            return prefix + seq.substring(start, seqEnd)
+        }
+
+        async loadAll() {
+
+            let data;
+            if (isDataURL(this.fastaURL)) {
+                let bytes = decodeDataURI$1(this.fastaURL);
+                data = "";
+                for (let b of bytes) {
+                    data += String.fromCharCode(b);
+                }
+            } else {
+                data = await igvxhr.load(this.fastaURL, buildOptions(this.config));
+            }
+
+            const chrNameSet = new Set();
+            const lines = splitLines$4(data);
+            const len = lines.length;
+            let lineNo = 0;
+            let order = 0;
+            let nextLine;
+            let current = {};
+            while (lineNo < len) {
+                nextLine = lines[lineNo++].trim();
+                if (nextLine.startsWith("#") || nextLine.length === 0) ; else if (nextLine.startsWith(">")) {
+                    // Start the next sequence
+                    if(current && current.seq) {
+                        pushChromosome.call(this, current, order++);
+                    }
+
+                    const parts = nextLine.substr(1).split(/\s+/);
+
+                    // Check for samtools style locus string.   This is not perfect, and could fail on weird sequence names
+                    const nameParts = parts[0].split(':');
+                    current.chr = nameParts[0];
+                    current.seq = "";
+                    current.offset = 0;
+                    if (nameParts.length > 1 && nameParts[1].indexOf('-') > 0) {
+                        const locusParts = nameParts[1].split('-');
+                        if (locusParts.length === 2 &&
+                            /^[0-9]+$/.test(locusParts[0]) &&
+                            /^[0-9]+$/.test(locusParts[1])) ;
+                        const from = Number.parseInt(locusParts[0]);
+                        const to = Number.parseInt(locusParts[1]);
+                        if (to > from) {   // TODO this should be an error
+                            current.offset = from - 1;
+                        }
+
+                        // Check for chromosome length token
+                        if (parts.length > 1 && parts[1].startsWith("@len=")) {
+                            try {
+                                current.length = parseInt(parts[1].trim().substring(5));
+                            } catch (e) {
+                                current.length = undefined;
+                                console.error(`Error parsing sequence length for ${nextLine}`);
+                            }
+                        } else {
+                            current.length = undefined;
+                        }
+                    }
+                } else {
+                    current.seq += nextLine;
+                }
+                // add last seq
+                if (current && current.seq) {
+                    pushChromosome.call(this, current, order);
+                }
+            }
+
+            function pushChromosome(current, order) {
+                const length = current.length || (current.offset + current.seq.length);
+                if (!chrNameSet.has(current.chr)) {
+                    this.chromosomeNames.push(current.chr);
+                    this.sequences.set(current.chr, []);
+                    this.chromosomes[current.chr] = new Chromosome(current.chr, order, length);
+                    chrNameSet.add(current.chr);
+                } else {
+                    const c = this.chromosomes[current.chr];
+                    c.bpLength = Math.max(c.bpLength, length);
+                }
+                this.sequences.get(current.chr).push(new SequenceSlice(current.offset, current.seq));
+            }
+        }
+    }
+
+    class SequenceSlice {
+
+        constructor(offset, sequence) {
+            this.offset = offset;
+            this.sequence = sequence;
+        }
+
+        contains(start, end) {
+            return this.offset <= start && this.end >= end
+        }
+
+        overlaps(start, end) {
+            return this.offset < end && this.end > start
+        }
+
+        get end() {
+            return this.offset + this.sequence.length
+        }
+
+    }
+
+    const GenomicInterval = function (chr, start, end, features) {
+        this.chr = chr;
+        this.start = start;
+        this.end = end;
+        this.features = features;
+    };
+
+    GenomicInterval.prototype.contains = function (chr, start, end) {
+        return this.chr === chr &&
+            this.start <= start &&
+            this.end >= end
+    };
+
+    GenomicInterval.prototype.containsRange = function (range) {
+        return this.chr === range.chr &&
+            this.start <= range.start &&
+            this.end >= range.end
+    };
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const splitLines$3 = splitLines$5;
+
+    const reservedProperties = new Set(['fastaURL', 'indexURL', 'compressedIndexURL', 'cytobandURL', 'indexed']);
+
+    class FastaSequence {
+
+        constructor(reference) {
+
+            this.file = reference.fastaURL;
+            this.indexFile = reference.indexURL || reference.indexFile || this.file + ".fai";
+            this.compressedIndexFile = reference.compressedIndexURL || false;
+            this.withCredentials = reference.withCredentials;
+            this.chromosomeNames = [];
+            this.chromosomes = {};
+            this.sequences = {};
+            this.offsets = {};
+
+            // Build a track-like config object from the referenceObject
+            const config = {};
+            for (let key in reference) {
+                if (reference.hasOwnProperty(key) && !reservedProperties.has(key)) {
+                    config[key] = reference[key];
+                }
+            }
+            this.config = config;
+        }
+
+
+        async init() {
+            return this.getIndex()
+        }
+
+        async getSequence(chr, start, end) {
+
+            const hasCachedSquence = this.interval && this.interval.contains(chr, start, end);
+
+            if (!hasCachedSquence) {
+
+                // Expand query, to minimum of 50kb
+                let qstart = start;
+                let qend = end;
+                if ((end - start) < 50000) {
+                    const w = (end - start);
+                    const center = Math.round(start + w / 2);
+                    qstart = Math.max(0, center - 25000);
+                    qend = center + 25000;
+                }
+
+                const seqBytes = await this.readSequence(chr, qstart, qend);
+                this.interval = new GenomicInterval(chr, qstart, qend, seqBytes);
+            }
+
+            const offset = start - this.interval.start;
+            const n = end - start;
+            const seq = this.interval.features ? this.interval.features.substr(offset, n) : null;
+            return seq
+        }
+
+        async getIndex() {
+
+            if (this.index) {
+                return this.index
+            } else {
+                const data = await igvxhr.load(this.indexFile, buildOptions(this.config));
+                const lines = splitLines$3(data);
+                const len = lines.length;
+                let lineNo = 0;
+                let order = 0;
+                this.index = {};
+
+                while (lineNo < len) {
+                    const tokens = lines[lineNo++].split("\t");
+                    const nTokens = tokens.length;
+
+                    if (nTokens === 5) {
+                        // Parse the index line.
+                        const chr = tokens[0];
+                        const size = parseInt(tokens[1]);
+                        const position = parseInt(tokens[2]);
+                        const basesPerLine = parseInt(tokens[3]);
+                        const bytesPerLine = parseInt(tokens[4]);
+
+                        const indexEntry = {
+                            size: size,
+                            position: position,
+                            basesPerLine: basesPerLine,
+                            bytesPerLine: bytesPerLine
+                        };
+
+                        this.chromosomeNames.push(chr);
+                        this.index[chr] = indexEntry;
+                        this.chromosomes[chr] = new Chromosome(chr, order++, size);
+                    }
+                }
+                return this.index
+            }
+        }
+
+
+        //Code is losely based on https://github.com/GMOD/bgzf-filehandle
+        //Reworked however in orde to work with the igvxhr interface for loading files
+        //Additionally, replaced calls to the Long.js interface with standard JS calls for ArrayBuffers and the associated views
+        //
+        //The compressed index is an array of blocks, with each block being a pair: compressed-position & uncompressed-position (both in bytes)
+        async getCompressedIndex() {
+            const GZI_NUM_BYTES_OFFSET = 8;
+            const GZI_NUM_BYTES_BLOCK = 8;
+            if (this.compressedIndex) {
+                return this.compressedIndex
+            }
+            if (!this.compressedIndexFile) {
+                this.compressedIndex = [];
+                return this.compressedIndex
+            }
+            //In contrast to the 'normal' reference (for which the index is chromosome based), this index is block-based
+            //As such there is not need to make it a hash. An array is sufficient.
+            this.compressedIndex = [];
+            const gziData = await igvxhr.loadArrayBuffer(this.compressedIndexFile, buildOptions(this.config));
+            const givenFileSize = gziData.byteLength;
+            if (givenFileSize < GZI_NUM_BYTES_OFFSET) {
+                console.log("Cannot parse GZI index file: length (" + givenFileSize + " bytes) is insufficient to determine content of index.");
+                return this.compressedIndex
+            }
+            //First 8 bytes are a little endian unsigned bigint (64bit), indicating the number of blocks in the index.
+            const numBlocksBuffer = gziData.slice(0, GZI_NUM_BYTES_OFFSET);
+            const numBlocks = Number((new DataView(numBlocksBuffer)).getBigUint64(0, true));
+            //The remainder of the gzi content are pairs of little endian unsigned bigint (64bit) numbers.
+            //The first of the pair is the compressed position of a block
+            //The second of the pair is the uncompressed position of a block
+
+            //Sanity check:
+            //Is the size of the array-buffer (of the entire file) correct with regards to the number of blocks detailled by the first 8 bytes of the file?
+            //Total file-size should be:
+            // 8 + 2*(num_entries*8) bytes, with the first 8 bytes indicating the number of entries
+            const expectedFileSize = GZI_NUM_BYTES_OFFSET + numBlocks * 2 * GZI_NUM_BYTES_BLOCK;
+            if (givenFileSize != expectedFileSize) {
+                console.log("Incorrect file size of reference genome index. Expected : " + expectedFileSize + ". Received : " + givenFileSize);
+                return this.compressedIndex
+            }
+
+            //Push the first block to the index: the first block always has positions 0 for both the compressed and uncompressed file
+            this.compressedIndex.push([0, 0]);
+
+            //Further process all the blocks of the GZI index, and keep them in memory
+            for (let blockNumber = 0; blockNumber < numBlocks; blockNumber++) {
+                const bufferBlockStart = GZI_NUM_BYTES_OFFSET + blockNumber * 2 * GZI_NUM_BYTES_BLOCK;
+                const bufferBlockEnd = GZI_NUM_BYTES_OFFSET + blockNumber * 2 * GZI_NUM_BYTES_BLOCK + 2 * GZI_NUM_BYTES_BLOCK;
+                const bufferBlock = gziData.slice(bufferBlockStart, bufferBlockEnd);
+                const viewBlock = new DataView(bufferBlock);
+                const compressedPosition = Number(viewBlock.getBigUint64(0, true));  //First 8 bytes
+                const uncompressedPosition = Number(viewBlock.getBigUint64(GZI_NUM_BYTES_BLOCK, true)); //Last 8 bytes
+                this.compressedIndex.push([compressedPosition, uncompressedPosition]);
+            }
+            return this.compressedIndex
+        }
+
+        //The Fasta-index gives a byte-position of the chromosomal sequences within the FASTA file.
+        //These locations need to be remapped to the locations within the zipped reference genome, using the GZI index
+        //This function provides this functionality by 
+        //1) taking the indicated start/stop byte locations within the UNCOMPRESSED FASTA file
+        //2) remapping these byte locations to the correct blocks (and associated positions) within the COMPRESSED FASTA file
+        //Subsequently, the calling method can then extract the correct blocks from the compressed FASTA files and uncompressed the data
+        async getRelevantCompressedBlockNumbers(queryPositionStart, queryPositionEnd) {
+            const UNCOMPRESSED_POSITION = 1;
+            //Fallback for impossible values
+            if (queryPositionStart < 0 || queryPositionEnd < 0 || queryPositionEnd < queryPositionStart) {
+                console.log("Incompatible query positions for reference-genome. Start:" + queryPositionStart + " | End:" + queryPositionEnd);
+                return []
+            }
+            //Ensure compressed index is loaded
+            await this.getCompressedIndex();
+            let result = [];
+            //Now search for the correct block-numbers (going from 0 to length(compressed-index)) which overlap with the provided byte-positions
+            const lowestBlockNumber = 0;
+            const highestBlockNumber = this.compressedIndex.length - 1;
+            //Failsafe if for some reason the compressed index wasn't loaded or doesn't contain any data
+            if (this.compressedIndex.length == 0) {
+                console.log("Compressed index does not contain any content");
+                return []
+            }
+            //Failsafe: if the queryPositionStart is greater than the uncompressed-position of the final block,
+            //then this final block is the only possible result
+            if (queryPositionStart > (this.compressedIndex)[highestBlockNumber][UNCOMPRESSED_POSITION]) {
+                return [highestBlockNumber]
+            }
+
+            //Rather than doing a linear search over all blocks, a binary search is done for speed considerations
+            //We are searching for the highest block number for which its position is smaller than the query start position
+            //Afterwards we will simply expand the blocks until the entire query range is covered
+            let searchLow = lowestBlockNumber;
+            let searchHigh = highestBlockNumber;
+            let searchPosition = Math.floor(this.compressedIndex.length / 2);
+            let maxIterations = this.compressedIndex.length + 1;
+            let solutionFound = false;
+            //instead of doing a while(true), this for-loop prevents eternal loops in case of issues
+            for (let iteration = 0; iteration < maxIterations; iteration++) {
+                const searchUncompressedPosition = (this.compressedIndex)[searchPosition][UNCOMPRESSED_POSITION];
+                const nextSearchUncompressedPosition = (searchPosition < (this.compressedIndex.length - 1)) ? (this.compressedIndex)[searchPosition + 1][UNCOMPRESSED_POSITION] : Infinity;
+                //The query position lies within the current search block
+                if (searchUncompressedPosition <= queryPositionStart && nextSearchUncompressedPosition > queryPositionStart) {
+                    solutionFound = true;
+                    break //searchPosition is the correct block number index
+                }
+                //Current block lies before the query position
+                else if (searchUncompressedPosition < queryPositionStart) {
+                    searchLow = searchPosition + 1;
+                }
+                //Current block lies after the query position
+                else {
+                    searchHigh = searchPosition - 1;
+                }
+                searchPosition = Math.ceil((searchHigh - searchLow) / 2) + searchLow;
+            }
+            //If for some reason the binary search did not reveal a correct block index, then we return the empty result
+            if (!solutionFound) {
+                console.log("No blocks within compressed index found that correspond with query positions " + queryPositionStart + "," + queryPositionEnd);
+                console.log(this.compressedIndex);
+                return []
+            }
+
+            //Now extend the result by adding additional blocks until the entire query range is covered
+            result.push(searchPosition);
+            for (let blockIndex = searchPosition + 1; blockIndex < this.compressedIndex.length; blockIndex++) {
+                result.push(blockIndex);
+                const blockUncompressedPosition = (this.compressedIndex)[blockIndex][UNCOMPRESSED_POSITION];
+                if (blockUncompressedPosition >= queryPositionEnd) {
+                    break
+                }
+            }
+
+            //It is possible that the query end position lies AFTER the start of the final block
+            //If this is the case, we add a 'fake' negative index which will be interpreted by the loadAndUncompressBlocks method as an indicator
+            //to read until the end of the file 
+            const finalRelevantBlock = result[result.length - 1];
+            const finalIndexBlock = this.compressedIndex.length - 1;
+            if (finalRelevantBlock === finalIndexBlock && (this.compressedIndex)[finalRelevantBlock][UNCOMPRESSED_POSITION] < queryPositionEnd) {
+                result.push(-1);
+            }
+
+            return result
+        }
+
+
+        //Load the content from the blockIndices.
+        //This is done on a per-block basis
+        //Content of the first block will be trimmed in order to match the expected offset
+        async loadAndUncompressBlocks(blockIndices, startByte) {
+            const COMPRESSED_POSITION = 0;
+            const UNCOMPRESSED_POSITION = 1;
+            //Normally the compressed index should already exist, we're just makeing sure here
+            await this.getCompressedIndex();
+
+            if (blockIndices.length == 0) {
+                return ""
+            }
+
+            //Storing data in seperate array with indices in order to assert order due to async behaviour of loops
+            let resultCache = Array(blockIndices.length - 1);
+            for (let i = 0; i < blockIndices.length - 1; i++) {
+                const currentBlockNumber = blockIndices[i];
+                const currentBlockInfo = (this.compressedIndex)[currentBlockNumber];
+                const currentBlockCompressedPosition = currentBlockInfo[COMPRESSED_POSITION];
+
+                const nextBlockNumber = blockIndices[i + 1];
+                let compressedBytes = [];
+                if (nextBlockNumber != -1) {  //default : read current entire block only
+                    const nextBlockInfo = (this.compressedIndex)[nextBlockNumber];
+                    const nextBlockCompressedPosition = nextBlockInfo[COMPRESSED_POSITION];
+                    const compressedLength = nextBlockCompressedPosition - currentBlockCompressedPosition;
+                    compressedBytes = await igvxhr.loadArrayBuffer(this.file, buildOptions(this.config, {
+                        range: {
+                            start: currentBlockCompressedPosition,
+                            size: compressedLength
+                        }
+                    }));
+                } else {   // special case for query within final block: read until the end of the file
+                    compressedBytes = await igvxhr.loadArrayBuffer(this.file, buildOptions(this.config, {
+                        range: {
+                            start: currentBlockCompressedPosition
+                        }
+                    }));
+                }
+                //now unzip the compressed bytes, and store them in the resultCache
+                const uncompressedBytes = await unbgzf(compressedBytes);
+                resultCache[i] = uncompressedBytes;
+            }
+
+            //Iterate over the result cache, create sequences from the data, and create a full sequence string from the data
+            let result = "";
+            for (let i = 0; i < resultCache.length; i++) {
+                for (let j = 0; j < resultCache[i].length; j++) {
+                    const c = String.fromCharCode(resultCache[i][j]);
+                    result = result + c;
+                }
+            }
+
+            //postprocess this data: because entire blocks are read we need to remove the first N bases of the first used block, 
+            //which are not included in the original query positions
+            const firstBlockInfo = (this.compressedIndex)[blockIndices[0]];
+            const offset = startByte - firstBlockInfo[UNCOMPRESSED_POSITION];
+            result = result.substring(offset);
+
+            return result
+        }
+
+
+        async readSequence(chr, qstart, qend) {
+
+            await this.getIndex();
+            await this.getCompressedIndex(); //This will work even if no compressed index file is set
+
+            const idxEntry = this.index[chr];
+            if (!idxEntry) {
+                console.log("No index entry for chr: " + chr);
+                // Tag interval with null so we don't try again
+                this.interval = new GenomicInterval(chr, qstart, qend, null);
+                return null
+            }
+
+            const start = Math.max(0, qstart);    // qstart should never be < 0
+            const end = Math.min(idxEntry.size, qend);
+            const bytesPerLine = idxEntry.bytesPerLine;
+            const basesPerLine = idxEntry.basesPerLine;
+            const position = idxEntry.position;
+            const nEndBytes = bytesPerLine - basesPerLine;
+            const startLine = Math.floor(start / basesPerLine);
+            const endLine = Math.floor(end / basesPerLine);
+            const base0 = startLine * basesPerLine;   // Base at beginning of start line
+            const offset = start - base0;
+            const startByte = position + startLine * bytesPerLine + offset;
+            const base1 = endLine * basesPerLine;
+            const offset1 = end - base1;
+            const endByte = position + endLine * bytesPerLine + offset1 - 1;
+            const byteCount = endByte - startByte + 1;
+
+            if (byteCount <= 0) {
+                console.error("No sequence for " + chr + ":" + qstart + "-" + qend);
+                return null
+            }
+
+            //If the compressed index file is set, then we are dealing with a compressed genome sequence
+            //The selection of startByte/endByte is done for the non-compressed genome sequence.
+            //These need to be 'converted' to the correct byte positions in the compressed genome sequence,
+            //by making use of the compressed index (GZI file)
+            let allBytes;
+            if (!this.compressedIndexFile) {
+                allBytes = await igvxhr.load(this.file, buildOptions(this.config, {
+                    range: {
+                        start: startByte,
+                        size: byteCount
+                    }
+                }));
+            } else {
+                let relevantBlockIndices = await this.getRelevantCompressedBlockNumbers(startByte, endByte);
+                if (relevantBlockIndices.length === 0) {
+                    console.log("No blocks in the compressed index that correspond with the requested byte positions (" + startByte + "," + endByte + ")");
+                    return null
+                }
+                allBytes = await this.loadAndUncompressBlocks(relevantBlockIndices, startByte);
+            }
+
+            if (!allBytes) {
+                return null
+            }
+
+            let nBases,
+                seqBytes = "",
+                srcPos = 0,
+                allBytesLength = allBytes.length;
+
+            if (offset > 0) {
+                nBases = Math.min(end - start, basesPerLine - offset);
+                seqBytes += allBytes.substr(srcPos, nBases);
+                srcPos += (nBases + nEndBytes);
+            }
+
+            while (srcPos < allBytesLength) {
+                nBases = Math.min(basesPerLine, allBytesLength - srcPos);
+                seqBytes += allBytes.substr(srcPos, nBases);
+                srcPos += (nBases + nEndBytes);
+            }
+
+            return seqBytes
+
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const splitLines$2 = splitLines$5;
+
+    class ChromSizes {
+
+
+        constructor(url) {
+            this.url = url;
+            this.chromosomeNames = [];
+            this.chromosomes = {};
+        }
+
+
+        async init() {
+            return this.loadAll()
+        }
+
+        async getSequence(chr, start, end) {
+
+            return undefined // TODO -- return array of "N"s?
+        }
+
+        async loadAll() {
+
+            let data;
+            if (isDataURL(this.url)) {
+                let bytes = decodeDataURI$1(this.fastaURL);
+                data = "";
+                for (let b of bytes) {
+                    data += String.fromCharCode(b);
+                }
+            } else {
+                data = await igvxhr.load(this.url, {});
+            }
+
+
+            this.chromosomeNames = [];
+            this.chromosomes = {};
+
+            const lines = splitLines$2(data);
+            let order = 0;
+            for (let nextLine of lines) {
+                const tokens = nextLine.split('\t');
+                this.chromosomeNames.push(tokens[0]);
+                const chrLength = Number.parseInt(tokens[1]);
+                const chromosome = new Chromosome(tokens[0], order++, chrLength);
+                this.chromosomes[tokens[0]] = chromosome;
+
+            }
+        }
+
+    }
+
+    async function loadFasta(reference) {
+
+        let fasta;
+        if ("chromsizes" === reference.format) {
+            fasta = new ChromSizes(reference.fastaURL);
+        } else if (isDataURL(reference.fastaURL) || reference.indexed === false) {
+            fasta = new NonIndexedFasta(reference);
+        } else {
+            fasta = new FastaSequence(reference);
+        }
+        await fasta.init();
+        return fasta
+    }
+
+    const defaultNucleotideColors = {
+        "A": "rgb(  0, 200,   0)",
+        "C": "rgb(  0,0,200)",
+        "T": "rgb(255,0,0)",
+        "G": "rgb(209,113,  5)",
+        "N": "rgb(80,80,80)"
+    };
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const defaultSequenceTrackOrder = Number.MIN_SAFE_INTEGER;
+
+    const translationDict = {
+        'TTT': 'F',
+        'TTC': 'F',
+        'TTA': 'L',
+        'TTG': 'L',
+        'CTT': 'L',
+        'CTC': 'L',
+        'CTA': 'L',
+        'CTG': 'L',
+        'ATT': 'I',
+        'ATC': 'I',
+        'ATA': 'I',
+        'ATG': 'M',
+        'GTT': 'V',
+        'GTC': 'V',
+        'GTA': 'V',
+        'GTG': 'V',
+        'TCT': 'S',
+        'TCC': 'S',
+        'TCA': 'S',
+        'TCG': 'S',
+        'CCT': 'P',
+        'CCC': 'P',
+        'CCA': 'P',
+        'CCG': 'P',
+        'ACT': 'T',
+        'ACC': 'T',
+        'ACA': 'T',
+        'ACG': 'T',
+        'GCT': 'A',
+        'GCC': 'A',
+        'GCA': 'A',
+        'GCG': 'A',
+        'TAT': 'Y',
+        'TAC': 'Y',
+        'TAA': 'STOP',
+        'TAG': 'STOP',
+        'CAT': 'H',
+        'CAC': 'H',
+        'CAA': 'Q',
+        'CAG': 'Q',
+        'AAT': 'N',
+        'AAC': 'N',
+        'AAA': 'K',
+        'AAG': 'K',
+        'GAT': 'D',
+        'GAC': 'D',
+        'GAA': 'E',
+        'GAG': 'E',
+        'TGT': 'C',
+        'TGC': 'C',
+        'TGA': 'STOP',
+        'TGG': 'W',
+        'CGT': 'R',
+        'CGC': 'R',
+        'CGA': 'R',
+        'CGG': 'R',
+        'AGT': 'S',
+        'AGC': 'S',
+        'AGA': 'R',
+        'AGG': 'R',
+        'GGT': 'G',
+        'GGC': 'G',
+        'GGA': 'G',
+        'GGG': 'G'
+    };
+
+    const complement = {};
+    const t1 = ['A', 'G', 'C', 'T', 'Y', 'R', 'W', 'S', 'K', 'M', 'D', 'V', 'H', 'B', 'N', 'X'];
+    const t2 = ['T', 'C', 'G', 'A', 'R', 'Y', 'W', 'S', 'M', 'K', 'H', 'B', 'D', 'V', 'N', 'X'];
+    for (let i = 0; i < t1.length; i++) {
+        complement[t1[i]] = t2[i];
+        complement[t1[i].toLowerCase()] = t2[i].toLowerCase();
+    }
+
+    const DEFAULT_HEIGHT = 25;
+    const TRANSLATED_HEIGHT = 115;
+    const SEQUENCE_HEIGHT = 15;
+    const FRAME_HEIGHT = 25;
+    const FRAME_BORDER = 5;
+    const BP_PER_PIXEL_THRESHOLD = 1 / 10;
+
+    const bppFeatureFetchThreshold = 10;
+
+    class SequenceTrack {
+
+        constructor(config, browser) {
+
+            this.config = config;
+            this.browser = browser;
+            this.type = "sequence";
+            this.removable = config.removable === undefined ? true : config.removable;      // Defaults to true
+            this.name = config.name;
+            this.id = config.id;
+            this.sequenceType = config.sequenceType || "dna";             //   dna | rna | prot
+            this.disableButtons = false;
+            this.order = config.order || defaultSequenceTrackOrder;
+            this.ignoreTrackMenu = false;
+
+            this.reversed = config.reversed === true;
+            this.frameTranslate = config.frameTranslate === true;
+            this.height = this.frameTranslate ? TRANSLATED_HEIGHT : DEFAULT_HEIGHT;
+
+            // Hack for backward compatibility
+            if(config.url) {
+                config.fastaURL = config.url;
+            }
+
+            if(!config.fastaURL) {
+                // Mark this as the genome reference sequence ==> backward compatibility convention
+                this.id = config.id || "sequence";
+            }
+
+        }
+
+        menuItemList() {
+            return [
+                {
+                    name: this.reversed ? "Forward" : "Reverse",
+                    click: () => {
+                        this.reversed = !this.reversed;
+                        this.trackView.repaintViews();
+                    }
+                },
+                {
+                    name: this.frameTranslate ? "Close Translation" : "Three-frame Translate",
+                    click: () => {
+                        this.frameTranslate = !this.frameTranslate;
+                        if (this.frameTranslate) {
+                            for (let vp of this.trackView.viewports) {
+                                vp.setContentHeight(TRANSLATED_HEIGHT);
+                            }
+                            this.trackView.setTrackHeight(TRANSLATED_HEIGHT);
+                        } else {
+                            for (let vp of this.trackView.viewports) {
+                                vp.setContentHeight(DEFAULT_HEIGHT);
+                            }
+                            this.trackView.setTrackHeight(DEFAULT_HEIGHT);
+                        }
+                        this.trackView.repaintViews();
+
+                    }
+                }
+            ]
+        }
+
+        contextMenuItemList(clickState) {
+            const viewport = clickState.viewport;
+            if (viewport.referenceFrame.bpPerPixel <= 1) {
+                const pixelWidth = viewport.getWidth();
+                const bpWindow = pixelWidth * viewport.referenceFrame.bpPerPixel;
+                const chr = viewport.referenceFrame.chr;
+                const start = Math.floor(viewport.referenceFrame.start);
+                const end = Math.ceil(start + bpWindow);
+                const items = [
+                    {
+                        label: this.reversed ? 'View visible sequence (reversed)...' : 'View visible sequence...',
+                        click: async () => {
+                            let seq = await this.browser.genome.sequence.getSequence(chr, start, end);
+                            if (!seq) {
+                                seq = "Unknown sequence";
+                            } else if (this.reversed) {
+                                seq = reverseComplementSequence(seq);
+                            }
+                            this.browser.alert.present(seq);
+                        }
+                    }
+                ];
+                if (isSecureContext()) {
+                    items.push({
+                        label: 'Copy visible sequence',
+                        click: async () => {
+                            let seq = await this.browser.genome.sequence.getSequence(chr, start, end);
+                            if (!seq) {
+                                seq = "Unknown sequence";
+                            } else if (this.reversed) {
+                                seq = reverseComplementSequence(seq);
+                            }
+                            try {
+                                await navigator.clipboard.writeText(seq);
+                            } catch (e) {
+                                console.error(e);
+                                this.browser.alert.present(`error copying sequence to clipboard ${e}`);
+                            }
+                        }
+
+                    });
+                }
+                items.push('<hr/>');
+
+                return items
+            } else {
+                return undefined
+            }
+        }
+
+        translateSequence(seq) {
+
+            const threeFrame = [[], [], []];
+
+            for (let fNum of [0, 1, 2]) {
+                let idx = fNum;
+
+                while ((seq.length - idx) >= 3) {
+                    let st = seq.slice(idx, idx + 3);
+                    if (this.reversed) {
+                        st = st.split('').reverse().join('');
+                    }
+
+                    const aa = translationDict[st.toUpperCase()] || "";
+                    threeFrame[fNum].push({
+                        codons: st,
+                        aminoA: aa
+                    });
+                    idx += 3;
+                }
+            }
+
+            return threeFrame
+        }
+
+        /**
+         * Return the source for sequence.  If an explicit fasta url is defined, use it, otherwise fetch sequence
+         * from the current genome
+         * *
+         * @returns {Promise<WrappedFasta|*>}
+         */
+        async getSequenceSource() {
+            if(this.config.fastaURL) {
+                if(!this.fasta) {
+                    this.fasta = new WrappedFasta(this.config, this.browser.genome);
+                    await this.fasta.init();
+                }
+                return this.fasta
+            } else {
+                return this.browser.genome.sequence
+            }
+        }
+
+        async getFeatures(chr, start, end, bpPerPixel) {
+
+            start = Math.floor(start);
+            end = Math.floor(end);
+
+            if (bpPerPixel && bpPerPixel > bppFeatureFetchThreshold) {
+                return null
+            } else {
+                const sequenceSource = await this.getSequenceSource();
+                const sequence = await sequenceSource.getSequence(chr, start, end);
+                return {
+                    bpStart: start,
+                    sequence: sequence
+                }
+            }
+        }
+
+        draw(options) {
+
+            const ctx = options.context;
+
+            if (options.features) {
+
+                let sequence = options.features.sequence;
+                if(!sequence) {
+                    return
+                }
+
+                if (this.reversed) {
+                    sequence = sequence.split('').map(function (cv) {
+                        return complement[cv]
+                    }).join('');
+                }
+
+                const sequenceBpStart = options.features.bpStart;  // genomic position at start of sequence
+                const bpEnd = 1 + options.bpStart + (options.pixelWidth * options.bpPerPixel);
+
+                for (let bp = Math.floor(options.bpStart); bp <= bpEnd; bp++) {
+
+                    const seqIdx = Math.floor(bp - sequenceBpStart);
+
+                    if (seqIdx >= 0 && seqIdx < sequence.length) {
+
+                        const offsetBP = bp - options.bpStart;
+                        const aPixel = offsetBP / options.bpPerPixel;
+                        const pixelWidth = 1 / options.bpPerPixel;
+                        const baseLetter = sequence[seqIdx];
+                        const color = this.fillColor(baseLetter.toUpperCase());
+
+                        if (options.bpPerPixel > BP_PER_PIXEL_THRESHOLD) {
+                            IGVGraphics.fillRect(ctx, aPixel, FRAME_BORDER, pixelWidth, SEQUENCE_HEIGHT - FRAME_BORDER, {fillStyle: color});
+                        } else {
+                            const textPixel = aPixel + 0.5 * (pixelWidth - ctx.measureText(baseLetter).width);
+
+
+
+
+                            if ('y' === options.axis) {
+                                ctx.save();
+                                IGVGraphics.labelTransformWithContext(ctx, textPixel);
+                                IGVGraphics.strokeText(ctx, baseLetter, textPixel, SEQUENCE_HEIGHT, {strokeStyle: color});
+                                ctx.restore();
+                            } else {
+                                IGVGraphics.strokeText(ctx, baseLetter, textPixel, SEQUENCE_HEIGHT, {strokeStyle: color});
+                            }
+
+                        }
+                    }
+                }
+
+                if (this.frameTranslate) {
+
+                    let y = SEQUENCE_HEIGHT + 2 * FRAME_BORDER;
+                    const translatedSequence = this.translateSequence(sequence);
+
+                    for (let fNum = 0; fNum < translatedSequence.length; fNum++) {    // == 3, 1 for each frame
+
+                        const aaSequence = translatedSequence[fNum];  // AA sequence for this frame
+
+                        for (let idx = 0; idx < aaSequence.length; idx++) {
+
+                            let color = 0 === idx % 2 ? 'rgb(160,160,160)' : 'rgb(224,224,224)';
+                            const cv = aaSequence[idx];
+
+                            const bpPos = sequenceBpStart + fNum + (idx * 3);
+                            const bpOffset = bpPos - options.bpStart;
+                            const p0 = Math.floor(bpOffset / options.bpPerPixel);
+                            const p1 = Math.floor((bpOffset + 3) / options.bpPerPixel);
+                            const pc = Math.round((p0 + p1) / 2);
+
+                            if (p1 < 0) {
+                                continue   // off left edge
+                            } else if (p0 > options.pixelWidth) {
+                                break      // off right edge
+                            }
+
+                            let aaLabel = cv.aminoA;
+                            if (cv.aminoA.indexOf('STOP') > -1) {
+                                color = 'rgb(255, 0, 0)';
+                                aaLabel = 'STOP'; //Color blind accessible
+                            } else if (cv.aminoA === 'M') {
+                                color = 'rgb(0, 153, 0)';
+                                aaLabel = 'START'; //Color blind accessible
+                            }
+
+                            IGVGraphics.fillRect(ctx, p0, y, p1 - p0, FRAME_HEIGHT, {fillStyle: color});
+
+                            if (options.bpPerPixel <= 1 / 10) {
+                                IGVGraphics.strokeText(ctx, aaLabel, pc - (ctx.measureText(aaLabel).width / 2), y + 15);
+                            }
+                        }
+                        y += (FRAME_HEIGHT + FRAME_BORDER);
+                    }
+                }
+            }
+        }
+
+        get supportsWholeGenome() {
+            return false
+        }
+
+        computePixelHeight(ignore) {
+            this.height = this.frameTranslate ? TRANSLATED_HEIGHT : DEFAULT_HEIGHT;
+            return this.height
+        }
+
+        fillColor(index) {
+
+            if (this.color) {
+                return this.color
+            } else if ("dna" === this.sequenceType) {
+                // return this.browser.nucleotideColors[index] || 'gray'
+                return defaultNucleotideColors[index] || 'gray'
+            } else {
+                return 'rgb(0, 0, 150)'
+            }
+        }
+
+        /**
+         * Return the current state of the track.  Used to create sessions and bookmarks.
+         *
+         * @returns {*|{}}
+         */
+        getState() {
+            const config = {
+                type: "sequence"
+            };
+            if (this.order !== defaultSequenceTrackOrder) {
+                config.order = this.order;
+            }
+            if (this.reversed) {
+                config.revealed = true;
+            }
+            return config
+        }
+
+    }
+
+    /**
+     * Wrapper for a Fasta object that does chr name alias translation.   This is not neccessary for the genome fasta,
+     * as it defines the reference name, but can be neccessary if loading an additional fasta as a track
+     *
+     */
+    class WrappedFasta {
+
+        constructor(config, genome) {
+            this.config = config;
+            this.genome = genome;
+        }
+
+        async init() {
+            this.fasta = await loadFasta(this.config);
+            this.chrNameMap = new Map();
+            for(let name of this.fasta.chromosomeNames) {
+                this.chrNameMap.set(this.genome.getChromosomeName(name), name);
+            }
+        }
+
+        async getSequence(chr, start, end) {
+            const chrName = this.chrNameMap.has(chr) ? this.chrNameMap.get(chr) : chr;
+            return this.fasta.getSequence(chrName, start, end)
+        }
+
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class Viewport {
+
+        constructor(trackView, viewportColumn, referenceFrame, width) {
+
+            this.guid = domUtils.guid();
+            this.trackView = trackView;
+            this.referenceFrame = referenceFrame;
+
+            this.browser = trackView.browser;
+
+            this.$viewport = $$1('<div class="igv-viewport">');
+            viewportColumn.appendChild(this.$viewport.get(0));
+
+            if (trackView.track.height) {
+                this.$viewport.get(0).style.height = `${trackView.track.height}px`;
+            }
+
+            // Create an alert dialog for the sequence track to copy ref sequence to.
+            if (trackView.track instanceof SequenceTrack) {
+                this.alert = new AlertDialog(this.$viewport.get(0));
+            }
+
+            this.contentTop = 0;
+            this.contentHeight = this.$viewport.height();
+
+
+            this.$viewport.width(width);
+
+            this.initializationHelper();
+
+        }
+
+        initializationHelper() {
+
+        }
+
+        showMessage(message) {
+            if (!this.messageDiv) {
+                this.messageDiv = document.createElement('div');
+                this.messageDiv.className = 'igv-viewport-message';
+                //this.contentDiv.append(this.messageDiv)
+                this.$viewport.append($$1(this.messageDiv));
+            }
+            this.messageDiv.textContent = message;
+            this.messageDiv.style.display = 'inline-block';
+        }
+
+        hideMessage(message) {
+            if (this.messageDiv)
+                this.messageDiv.style.display = 'none';
+        }
+
+        setTrackLabel(label) {
+        }
+
+        startSpinner() {
+        }
+
+        stopSpinner() {
+        }
+
+        checkZoomIn() {
+            return true
+        }
+
+        shift() {
+        }
+
+        setTop(contentTop) {
+
+            this.contentTop = contentTop;
+            this.$viewport.height();
+
+            //this.$content.css('top', `${contentTop}px`)
+            //
+            // if (undefined === this.canvasVerticalRange || this.canvasVerticalRange.bottom < viewBottom || this.canvasVerticalRange.top > viewTop) {
+            //     console.log("Repaint " + this.canvasVerticalRange)
+            //    this.repaint()
+            // }
+
+        }
+
+        async loadFeatures() {
+            return undefined
+        }
+
+        clearCache() {
+
+        }
+
+        async repaint() {
+        }
+
+        draw(drawConfiguration, features, roiFeatures) {
+            console.log('Viewport - draw(drawConfiguration, features, roiFeatures)');
+        }
+
+        checkContentHeight(features) {
+
+            let track = this.trackView.track;
+            features = features || this.cachedFeatures;
+            if ("FILL" === track.displayMode) {
+                this.setContentHeight(this.$viewport.height());
+            } else if (typeof track.computePixelHeight === 'function') {
+                if (features && features.length > 0) {
+                    let requiredContentHeight = track.computePixelHeight(features);
+                    //let currentContentHeight = this.$content.height()
+                    let currentContentHeight = this.contentHeight;
+                    if (requiredContentHeight !== currentContentHeight) {
+                        this.setContentHeight(requiredContentHeight);
+                    }
+                }
+            }
+        }
+
+        getContentHeight() {
+            //return this.$content.height()
+            return this.contentHeight
+        }
+
+        setContentHeight(contentHeight) {
+           this.contentHeight = contentHeight;
+        }
+
+        isLoading() {
+            return false
+        }
+
+        saveSVG() {
+
+        }
+
+        isVisible() {
+            return this.$viewport.width()
+        }
+
+        setWidth(width) {
+            this.$viewport.width(width);
+        }
+
+        getWidth() {
+            return this.$viewport.width()
+        }
+
+        getContentTop() {
+            return this.contentTop
+        }
+
+        containsPosition(chr, position) {
+            console.log('Viewport - containsPosition(chr, position)');
+        }
+
+        addMouseHandlers() {
+        }
+
+        removeMouseHandlers() {
+        }
+
+        /**
+         * Called when the associated track is removed.  Do any needed cleanup here.
+         */
+        dispose() {
+
+            if (this.popover) {
+                this.popover.dispose();
+            }
+
+            this.$viewport.get(0).remove();
+
+            // Null out all properties -- this should not be neccessary, but just in case there is a
+            // reference to self somewhere we want to free memory.
+            for (let key of Object.keys(this)) {
+                this[key] = undefined;
+            }
+        }
+
+    }
+
+    /*!!
+     *  Canvas 2 Svg v1.0.19
+     *  A low level canvas to SVG converter. Uses a mock canvas context to build an SVG document.
+     *
+     *  Licensed under the MIT license:
+     *  http://www.opensource.org/licenses/mit-license.php
+     *
+     *  Author:
+     *  Kerry Liu
+     *
+     *  Copyright (c) 2014 Gliffy Inc.
+     */
+
+    //helper function to format a string
+    function format(str, args) {
+        var keys = Object.keys(args), i;
+        for (i = 0; i < keys.length; i++) {
+            str = str.replace(new RegExp("\\{" + keys[i] + "\\}", "gi"), args[keys[i]]);
+        }
+        return str
+    }
+
+    //helper function that generates a random string
+    function randomString(holder) {
+        var chars, randomstring, i;
+        if (!holder) {
+            throw new Error("cannot create a random attribute name for an undefined object")
+        }
+        chars = "ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz";
+        randomstring = "";
+        do {
+            randomstring = "";
+            for (i = 0; i < 12; i++) {
+                randomstring += chars[Math.floor(Math.random() * chars.length)];
+            }
+        } while (holder[randomstring])
+        return randomstring
+    }
+
+    //helper function to map named to numbered entities
+    function createNamedToNumberedLookup(items, radix) {
+        var i, entity, lookup = {}, base10;
+        items = items.split(',');
+        radix = radix || 10;
+        // Map from named to numbered entities.
+        for (i = 0; i < items.length; i += 2) {
+            entity = '&' + items[i + 1] + ';';
+            base10 = parseInt(items[i], radix);
+            lookup[entity] = '&#' + base10 + ';';
+        }
+        //FF and IE need to create a regex from hex values ie &nbsp; == \xa0
+        lookup["\\xa0"] = '&#160;';
+        return lookup
+    }
+
+    //helper function to map canvas-textAlign to svg-textAnchor
+    function getTextAnchor(textAlign) {
+        //TODO: support rtl languages
+        var mapping = {"left": "start", "right": "end", "center": "middle", "start": "start", "end": "end"};
+        return mapping[textAlign] || mapping.start
+    }
+
+    //helper function to map canvas-textBaseline to svg-dominantBaseline
+    function getDominantBaseline(textBaseline) {
+        //INFO: not supported in all browsers
+        var mapping = {
+            "alphabetic": "alphabetic",
+            "hanging": "hanging",
+            "top": "text-before-edge",
+            "bottom": "text-after-edge",
+            "middle": "central"
+        };
+        return mapping[textBaseline] || mapping.alphabetic
+    }
+
+
+    /**
+     * Return a new normalized vector of given vector
+     */
+    function normalize(vector) {
+        var len = Math.sqrt(vector[0] * vector[0] + vector[1] * vector[1]);
+        return [vector[0] / len, vector[1] / len]
+    }
+
+
+    function intersectRect(rect1, rect2) {
+        return (rect1.x < rect2.x + rect2.width &&
+            rect1.x + rect1.width > rect2.x &&
+            rect1.y < rect2.y + rect2.height &&
+            rect1.y + rect1.height > rect2.y)
+    }
+
+
+    // Unpack entities lookup where the numbers are in radix 32 to reduce the size
+    // entity mapping courtesy of tinymce
+    const namedEntities = createNamedToNumberedLookup(
+        '50,nbsp,51,iexcl,52,cent,53,pound,54,curren,55,yen,56,brvbar,57,sect,58,uml,59,copy,' +
+        '5a,ordf,5b,laquo,5c,not,5d,shy,5e,reg,5f,macr,5g,deg,5h,plusmn,5i,sup2,5j,sup3,5k,acute,' +
+        '5l,micro,5m,para,5n,middot,5o,cedil,5p,sup1,5q,ordm,5r,raquo,5s,frac14,5t,frac12,5u,frac34,' +
+        '5v,iquest,60,Agrave,61,Aacute,62,Acirc,63,Atilde,64,Auml,65,Aring,66,AElig,67,Ccedil,' +
+        '68,Egrave,69,Eacute,6a,Ecirc,6b,Euml,6c,Igrave,6d,Iacute,6e,Icirc,6f,Iuml,6g,ETH,6h,Ntilde,' +
+        '6i,Ograve,6j,Oacute,6k,Ocirc,6l,Otilde,6m,Ouml,6n,times,6o,Oslash,6p,Ugrave,6q,Uacute,' +
+        '6r,Ucirc,6s,Uuml,6t,Yacute,6u,THORN,6v,szlig,70,agrave,71,aacute,72,acirc,73,atilde,74,auml,' +
+        '75,aring,76,aelig,77,ccedil,78,egrave,79,eacute,7a,ecirc,7b,euml,7c,igrave,7d,iacute,7e,icirc,' +
+        '7f,iuml,7g,eth,7h,ntilde,7i,ograve,7j,oacute,7k,ocirc,7l,otilde,7m,ouml,7n,divide,7o,oslash,' +
+        '7p,ugrave,7q,uacute,7r,ucirc,7s,uuml,7t,yacute,7u,thorn,7v,yuml,ci,fnof,sh,Alpha,si,Beta,' +
+        'sj,Gamma,sk,Delta,sl,Epsilon,sm,Zeta,sn,Eta,so,Theta,sp,Iota,sq,Kappa,sr,Lambda,ss,Mu,' +
+        'st,Nu,su,Xi,sv,Omicron,t0,Pi,t1,Rho,t3,Sigma,t4,Tau,t5,Upsilon,t6,Phi,t7,Chi,t8,Psi,' +
+        't9,Omega,th,alpha,ti,beta,tj,gamma,tk,delta,tl,epsilon,tm,zeta,tn,eta,to,theta,tp,iota,' +
+        'tq,kappa,tr,lambda,ts,mu,tt,nu,tu,xi,tv,omicron,u0,pi,u1,rho,u2,sigmaf,u3,sigma,u4,tau,' +
+        'u5,upsilon,u6,phi,u7,chi,u8,psi,u9,omega,uh,thetasym,ui,upsih,um,piv,812,bull,816,hellip,' +
+        '81i,prime,81j,Prime,81u,oline,824,frasl,88o,weierp,88h,image,88s,real,892,trade,89l,alefsym,' +
+        '8cg,larr,8ch,uarr,8ci,rarr,8cj,darr,8ck,harr,8dl,crarr,8eg,lArr,8eh,uArr,8ei,rArr,8ej,dArr,' +
+        '8ek,hArr,8g0,forall,8g2,part,8g3,exist,8g5,empty,8g7,nabla,8g8,isin,8g9,notin,8gb,ni,8gf,prod,' +
+        '8gh,sum,8gi,minus,8gn,lowast,8gq,radic,8gt,prop,8gu,infin,8h0,ang,8h7,and,8h8,or,8h9,cap,8ha,cup,' +
+        '8hb,int,8hk,there4,8hs,sim,8i5,cong,8i8,asymp,8j0,ne,8j1,equiv,8j4,le,8j5,ge,8k2,sub,8k3,sup,8k4,' +
+        'nsub,8k6,sube,8k7,supe,8kl,oplus,8kn,otimes,8l5,perp,8m5,sdot,8o8,lceil,8o9,rceil,8oa,lfloor,8ob,' +
+        'rfloor,8p9,lang,8pa,rang,9ea,loz,9j0,spades,9j3,clubs,9j5,hearts,9j6,diams,ai,OElig,aj,oelig,b0,' +
+        'Scaron,b1,scaron,bo,Yuml,m6,circ,ms,tilde,802,ensp,803,emsp,809,thinsp,80c,zwnj,80d,zwj,80e,lrm,' +
+        '80f,rlm,80j,ndash,80k,mdash,80o,lsquo,80p,rsquo,80q,sbquo,80s,ldquo,80t,rdquo,80u,bdquo,810,dagger,' +
+        '811,Dagger,81g,permil,81p,lsaquo,81q,rsaquo,85c,euro', 32);
+
+
+    //Some basic mappings for attributes and default values.
+    const STYLES = {
+        "strokeStyle": {
+            svgAttr: "stroke", //corresponding svg attribute
+            canvas: "#000000", //canvas default
+            svg: "none",       //svg default
+            apply: "stroke"    //apply on stroke() or fill()
+        },
+        "fillStyle": {
+            svgAttr: "fill",
+            canvas: "#000000",
+            svg: null, //svg default is black, but we need to special case this to handle canvas stroke without fill
+            apply: "fill"
+        },
+        "lineCap": {
+            svgAttr: "stroke-linecap",
+            canvas: "butt",
+            svg: "butt",
+            apply: "stroke"
+        },
+        "lineJoin": {
+            svgAttr: "stroke-linejoin",
+            canvas: "miter",
+            svg: "miter",
+            apply: "stroke"
+        },
+        "miterLimit": {
+            svgAttr: "stroke-miterlimit",
+            canvas: 10,
+            svg: 4,
+            apply: "stroke"
+        },
+        "lineWidth": {
+            svgAttr: "stroke-width",
+            canvas: 1,
+            svg: 1,
+            apply: "stroke"
+        },
+        "globalAlpha": {
+            svgAttr: "opacity",
+            canvas: 1,
+            svg: 1,
+            apply: "fill stroke"
+        },
+        "font": {
+            //font converts to multiple svg attributes, there is custom logic for this
+            canvas: "10px sans-serif"
+        },
+        "shadowColor": {
+            canvas: "#000000"
+        },
+        "shadowOffsetX": {
+            canvas: 0
+        },
+        "shadowOffsetY": {
+            canvas: 0
+        },
+        "shadowBlur": {
+            canvas: 0
+        },
+        "textAlign": {
+            canvas: "start"
+        },
+        "textBaseline": {
+            canvas: "alphabetic"
+        },
+        "lineDash": {
+            svgAttr: "stroke-dasharray",
+            canvas: [],
+            svg: null,
+            apply: "stroke"
+        }
+    };
+
+    /**
+     *
+     * @param gradientNode - reference to the gradient
+     * @constructor
+     */
+    class CanvasGradient {
+        constructor(gradientNode, ctx) {
+            this.__root = gradientNode;
+            this.__ctx = ctx;
+        }
+
+        /**
+         * Adds a color stop to the gradient root
+         */
+        addColorStop(offset, color) {
+            var stop = this.__ctx.__createElement("stop"), regex, matches;
+            stop.setAttribute("offset", offset);
+            if (color && color.indexOf("rgba") !== -1) {
+                //separate alpha value, since webkit can't handle it
+                regex = /rgba\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d?\.?\d*)\s*\)/gi;
+                matches = regex.exec(color);
+                stop.setAttribute("stop-color", format("rgb({r},{g},{b})", {r: matches[1], g: matches[2], b: matches[3]}));
+                stop.setAttribute("stop-opacity", matches[4]);
+            } else {
+                stop.setAttribute("stop-color", color);
+            }
+            this.__root.appendChild(stop);
+        }
+    }
+
+    class CanvasPattern {
+        constructor(pattern, ctx) {
+            this.__root = pattern;
+            this.__ctx = ctx;
+        }
+    }
+
+    /**
+     * The mock canvas context
+     * @param config - options include:
+     * ctx - existing Context2D to wrap around
+     * width - width of your canvas (defaults to 500)
+     * height - height of your canvas (defaults to 500)
+     * enableMirroring - enables canvas mirroring (get image data) (defaults to false)
+     * document - the document object (defaults to the current document)
+     */
+    class ctx {
+        constructor(config) {
+
+            if (!(this instanceof ctx)) {
+                //did someone call this without new?
+                return new ctx(config)
+            }
+
+            // clone config
+            this.config = config;
+
+            //setup options
+            this.width = config.width;
+            this.height = config.height;
+            this.enableMirroring = config.enableMirroring || false;
+
+            this.canvas = this;   ///point back to this instance!
+            this.__document = document;
+
+            // allow passing in an existing context to wrap around
+            // if a context is passed in, we know a canvas already exist
+            if (config.ctx) {
+                this.__ctx = config.ctx;
+            } else {
+                this.__canvas = this.__document.createElement("canvas");
+                this.__ctx = this.__canvas.getContext("2d");
+            }
+
+            // give this canvas a type
+            this.isSVG = true;
+
+            this.__setDefaultStyles();
+            this.__stack = [this.__getStyleState()];
+            this.__groupStack = [];
+
+            // root svg element
+            this.__root = this.__createElement("svg");
+            this.__root.setAttribute("width", this.width);
+            this.__root.setAttribute("height", this.height);
+
+            // allow contents to overflow svg bbox
+            this.__root.setAttribute('overflow', 'visible');
+
+            // viewbox
+            if (config.viewbox) {
+                const str = config.viewbox.x + ' ' + config.viewbox.y + ' ' + config.viewbox.width + ' ' + config.viewbox.height;
+                this.__root.setAttribute("viewBox", str);
+
+                this.viewbox = config.viewbox;
+            }
+
+            // make sure we don't generate the same ids in defs
+            this.__ids = {};
+
+            // defs
+            this.__defs = this.__createElement("defs");
+            this.__root.appendChild(this.__defs);
+
+            this.multiLocusGap = config.multiLocusGap;
+
+            // svg background color
+            let backdropConfig =
+                {
+                    id: 'svg_output_backdrop',
+                    width: '100%',
+                    height: '100%',
+                    fill: config.backdropColor || 'white'
+                };
+
+            let backdropRect = this.__createElement('rect', backdropConfig);
+            this.__root.appendChild(backdropRect);
+
+            // root group
+            this.__rootGroup = this.__createElement('g', {id: 'root-group'});
+            this.__root.appendChild(this.__rootGroup);
+
+            // point current element to root group
+            this.__currentElement = this.__rootGroup;
+        }
+
+        setWidth(width) {
+
+            this.width = width;
+            this.__root.setAttribute("width", this.width);
+
+            const str = this.config.viewbox.x + ' ' + this.config.viewbox.y + ' ' + width + ' ' + this.config.viewbox.height;
+            this.__root.setAttribute("viewBox", str);
+
+        };
+
+        setHeight(height) {
+
+            this.height = height;
+            this.__root.setAttribute("height", this.height);
+
+            const str = this.config.viewbox.x + ' ' + this.config.viewbox.y + ' ' + this.config.viewbox.width + ' ' + height;
+            this.__root.setAttribute("viewBox", str);
+
+        };
+
+        /**
+         * Creates the specified svg element
+         * @private
+         */
+        __createElement(elementName, properties, resetFill) {
+
+            if (typeof properties === "undefined") {
+                properties = {};
+            }
+
+            let element = this.__document.createElementNS("http://www.w3.org/2000/svg", elementName);
+
+            if (resetFill) {
+                //if fill or stroke is not specified, the svg element should not display. By default SVG's fill is black.
+                element.setAttribute("fill", "none");
+                element.setAttribute("stroke", "none");
+            }
+
+            for (let key of Object.keys(properties)) {
+                element.setAttribute(key, properties[key]);
+            }
+
+            return element
+        };
+
+        /**
+         * Applies default canvas styles to the context
+         * @private
+         */
+        __setDefaultStyles() {
+            //default 2d canvas context properties see:http://www.w3.org/TR/2dcontext/
+            var keys = Object.keys(STYLES), i, key;
+            for (i = 0; i < keys.length; i++) {
+                key = keys[i];
+                this[key] = STYLES[key].canvas;
+            }
+        };
+
+        /**
+         * Applies styles on restore
+         * @param styleState
+         * @private
+         */
+        __applyStyleState(styleState) {
+            var keys = Object.keys(styleState), i, key;
+            for (i = 0; i < keys.length; i++) {
+                key = keys[i];
+                this[key] = styleState[key];
+            }
+        };
+
+        /**
+         * Gets the current style state
+         * @return {Object}
+         * @private
+         */
+        __getStyleState() {
+            var i, styleState = {}, keys = Object.keys(STYLES), key;
+            for (i = 0; i < keys.length; i++) {
+                key = keys[i];
+                styleState[key] = this[key];
+            }
+            return styleState
+        };
+
+        /**
+         * Apples the current styles to the current SVG element. On "ctx.fill" or "ctx.stroke"
+         * @param type
+         * @private
+         */
+        __applyStyleToCurrentElement(type) {
+            var currentElement = this.__currentElement;
+            var currentStyleGroup = this.__currentElementsToStyle;
+            if (currentStyleGroup) {
+                currentElement.setAttribute(type, "");
+                currentElement = currentStyleGroup.element;
+                currentStyleGroup.children.forEach(function (node) {
+                    node.setAttribute(type, "");
+                });
+            }
+
+            var keys = Object.keys(STYLES), i, style, value, id, regex, matches;
+            for (i = 0; i < keys.length; i++) {
+                style = STYLES[keys[i]];
+                value = this[keys[i]];
+                if (style.apply) {
+                    //is this a gradient or pattern?
+                    if (value instanceof CanvasPattern) {
+                        //pattern
+                        if (value.__ctx) {
+                            //copy over defs
+                            while (value.__ctx.__defs.childNodes.length) {
+                                id = value.__ctx.__defs.childNodes[0].getAttribute("id");
+                                this.__ids[id] = id;
+                                this.__defs.appendChild(value.__ctx.__defs.childNodes[0]);
+                            }
+                        }
+                        currentElement.setAttribute(style.apply, format("url(#{id})", {id: value.__root.getAttribute("id")}));
+                    } else if (value instanceof CanvasGradient) {
+                        //gradient
+                        currentElement.setAttribute(style.apply, format("url(#{id})", {id: value.__root.getAttribute("id")}));
+                    } else if (style && style.apply.indexOf(type) !== -1 && style.svg !== value) {
+                        if ((style.svgAttr === "stroke" || style.svgAttr === "fill") && value && value.indexOf("rgba") !== -1) {
+                            //separate alpha value, since illustrator can't handle it
+                            regex = /rgba\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d?\.?\d*)\s*\)/gi;
+                            matches = regex.exec(value);
+                            currentElement.setAttribute(style.svgAttr, format("rgb({r},{g},{b})", {
+                                r: matches[1],
+                                g: matches[2],
+                                b: matches[3]
+                            }));
+                            //should take globalAlpha here
+                            var opacity = matches[4];
+                            var globalAlpha = this.globalAlpha;
+                            if (globalAlpha != null) {
+                                opacity *= globalAlpha;
+                            }
+                            currentElement.setAttribute(style.svgAttr + "-opacity", opacity);
+                        } else {
+                            var attr = style.svgAttr;
+                            if (keys[i] === 'globalAlpha') {
+                                attr = type + '-' + style.svgAttr;
+                                if (currentElement.getAttribute(attr)) {
+                                    //fill-opacity or stroke-opacity has already been set by stroke or fill.
+                                    continue
+                                }
+                            }
+                            //otherwise only update attribute if right type, and not svg default
+                            currentElement.setAttribute(attr, value);
+                        }
+                    }
+                }
+            }
+        };
+
+        /**
+         * Will return the closest group or svg node. May return the current element.
+         * @private
+         */
+        __closestGroupOrSvg(node) {
+            node = node || this.__currentElement;
+            if (node.nodeName === "g" || node.nodeName === "svg") {
+                return node
+            } else {
+                return this.__closestGroupOrSvg(node.parentNode)
+            }
+        };
+
+        /**
+         * Returns the serialized value of the svg so far
+         * @param fixNamedEntities - Standalone SVG doesn't support named entities, which document.createTextNode encodes.
+         *                           If true, we attempt to find all named entities and encode it as a numeric entity.
+         * @return serialized svg
+         */
+        getSerializedSvg(fixNamedEntities) {
+            var serialized = new XMLSerializer().serializeToString(this.__root),
+                keys, i, key, value, regexp;
+
+            //IE search for a duplicate xmnls because they didn't implement setAttributeNS correctly
+            // xmlns = /xmlns="http:\/\/www\.w3\.org\/2000\/svg".+xmlns="http:\/\/www\.w3\.org\/2000\/svg/gi;
+            // if (xmlns.test(serialized)) {
+            //     serialized = serialized.replace('xmlns="http://www.w3.org/2000/svg','xmlns:xlink="http://www.w3.org/1999/xlink');
+            // }
+
+            if (fixNamedEntities) {
+                keys = Object.keys(namedEntities);
+                //loop over each named entity and replace with the proper equivalent.
+                for (i = 0; i < keys.length; i++) {
+                    key = keys[i];
+                    value = namedEntities[key];
+                    regexp = new RegExp(key, "gi");
+                    if (regexp.test(serialized)) {
+                        serialized = serialized.replace(regexp, value);
+                    }
+                }
+            }
+
+            return serialized
+        };
+
+
+        /**
+         * Returns the root svg
+         * @return
+         */
+        getSvg() {
+            return this.__root
+        };
+
+        /**
+         * Will generate a group tag.
+         */
+        saveWithTranslationAndClipRect(id, tx, ty, width, height, clipYOffset) {
+
+            // clip rect
+            const clip_id = `${id}_clip_rect`;
+            let clipPath = this.__createElement('clipPath', {id: clip_id});
+
+            this.__defs.appendChild(clipPath);
+
+            const config =
+                {
+                    x: '0',
+                    y: clipYOffset.toString(),
+                    width: width.toString(),
+                    height: height.toString()
+                };
+
+            clipPath.appendChild(this.__createElement('rect', config));
+
+            const group = this.__createElement("g");
+            group.setAttribute('transform', format('translate({x},{y})', {x: tx, y: ty}));
+            group.setAttribute('clip-path', format('url(#{id})', {id: clip_id}));
+
+            const parent = this.__closestGroupOrSvg();
+            parent.appendChild(group);
+            this.__groupStack.push(parent);
+
+            this.__currentElement = group;
+            this.__stack.push(this.__getStyleState());
+        };
+
+        save() {
+            var group = this.__createElement("g");
+            var parent = this.__closestGroupOrSvg();
+            this.__groupStack.push(parent);
+            parent.appendChild(group);
+            this.__currentElement = group;
+            this.__stack.push(this.__getStyleState());
+        };
+
+        /**
+         * Sets current element to parent, or just root if already root
+         */
+        restore() {
+            this.__currentElement = this.__groupStack.pop();
+            this.__currentElementsToStyle = null;
+            //Clearing canvas will make the poped group invalid, currentElement is set to the root group node.
+            if (!this.__currentElement) {
+                this.__currentElement = this.__root.childNodes[1];
+            }
+            var state = this.__stack.pop();
+            this.__applyStyleState(state);
+        };
+
+        /**
+         * Helper method to add transform
+         * @private
+         */
+        __addTransform(t) {
+            //if the current element has siblings, add another group
+            var parent = this.__closestGroupOrSvg();
+            if (parent.childNodes.length > 0) {
+                if (this.__currentElement.nodeName === "path") {
+                    if (!this.__currentElementsToStyle) this.__currentElementsToStyle = {element: parent, children: []};
+                    this.__currentElementsToStyle.children.push(this.__currentElement);
+                    this.__applyCurrentDefaultPath();
+                }
+
+                var group = this.__createElement("g");
+                parent.appendChild(group);
+                this.__currentElement = group;
+            }
+
+            var transform = this.__currentElement.getAttribute("transform");
+            if (transform) {
+                transform += " ";
+            } else {
+                transform = "";
+            }
+            transform += t;
+            this.__currentElement.setAttribute("transform", transform);
+        };
+
+        addTrackGroupWithTranslationAndClipRect(id, tx, ty, width, height, clipYOffset) {
+
+            // clip rect
+            const clip_id = id + '_clip_rect';
+            let clipPath = this.__createElement('clipPath', {id: clip_id});
+
+            this.__defs.appendChild(clipPath);
+            clipPath.appendChild(this.__createElement('rect', {
+                x: '0',
+                y: clipYOffset.toString(),
+                width: width.toString(),
+                height: height.toString()
+            }));
+
+            let group = this.__createElement('g');
+            this.__rootGroup.appendChild(group);
+
+            group.setAttribute('transform', format('translate({x},{y})', {x: tx, y: ty}));
+            group.setAttribute('id', (id + '_group'));
+
+            // add clip rect
+            group.setAttribute('clip-path', format('url(#{id})', {id: clip_id}));
+
+            this.__currentElement = group;
+        };
+
+        /**
+         *  scales the current element
+         */
+        scale(x, y) {
+            if (y === undefined) {
+                y = x;
+            }
+            this.__addTransform(format("scale({x},{y})", {x: x, y: y}));
+        };
+
+        /**
+         * rotates the current element
+         */
+        rotate(angle) {
+            var degrees = (angle * 180 / Math.PI);
+            this.__addTransform(format("rotate({angle},{cx},{cy})", {angle: degrees, cx: 0, cy: 0}));
+        };
+
+        /**
+         * translates the current element
+         */
+        translate(x, y) {
+            this.__addTransform(format("translate({x},{y})", {x: x, y: y}));
+        };
+
+        /**
+         * applies a transform to the current element
+         */
+        transform(a, b, c, d, e, f) {
+            this.__addTransform(format("matrix({a},{b},{c},{d},{e},{f})", {a: a, b: b, c: c, d: d, e: e, f: f}));
+        };
+
+        /**
+         * Create a new Path Element
+         */
+        beginPath() {
+            var path, parent;
+
+            // Note that there is only one current default path, it is not part of the drawing state.
+            // See also: https://html.spec.whatwg.org/multipage/scripting.html#current-default-path
+            this.__currentDefaultPath = "";
+            this.__currentPosition = {};
+
+            path = this.__createElement("path", {}, true);
+            parent = this.__closestGroupOrSvg();
+            parent.appendChild(path);
+            this.__currentElement = path;
+        };
+
+        /**
+         * Helper function to apply currentDefaultPath to current path element
+         * @private
+         */
+        __applyCurrentDefaultPath() {
+            var currentElement = this.__currentElement;
+            if (currentElement.nodeName === "path") {
+                currentElement.setAttribute("d", this.__currentDefaultPath);
+            } else {
+                console.error("Attempted to apply path command to node", currentElement.nodeName);
+            }
+        };
+
+        /**
+         * Helper function to add path command
+         * @private
+         */
+        __addPathCommand(command) {
+            this.__currentDefaultPath += " ";
+            this.__currentDefaultPath += command;
+        };
+
+        /**
+         * Adds the move command to the current path element,
+         * if the currentPathElement is not empty create a new path element
+         */
+        moveTo(x, y) {
+            if (this.__currentElement.nodeName !== "path") {
+                this.beginPath();
+            }
+
+            // creates a new subpath with the given point
+            this.__currentPosition = {x: x, y: y};
+            this.__addPathCommand(format("M {x} {y}", {x: x, y: y}));
+        };
+
+        /**
+         * Closes the current path
+         */
+        closePath() {
+            if (this.__currentDefaultPath) {
+                this.__addPathCommand("Z");
+            }
+        };
+
+        /**
+         * Adds a line to command
+         */
+        lineTo(x, y) {
+            this.__currentPosition = {x: x, y: y};
+            if (this.__currentDefaultPath && this.__currentDefaultPath.indexOf('M') > -1) {
+                this.__addPathCommand(format("L {x} {y}", {x: x, y: y}));
+            } else {
+                this.__addPathCommand(format("M {x} {y}", {x: x, y: y}));
+            }
+        };
+
+        /**
+         * Add a bezier command
+         */
+        bezierCurveTo(cp1x, cp1y, cp2x, cp2y, x, y) {
+            this.__currentPosition = {x: x, y: y};
+            this.__addPathCommand(format("C {cp1x} {cp1y} {cp2x} {cp2y} {x} {y}",
+                {cp1x: cp1x, cp1y: cp1y, cp2x: cp2x, cp2y: cp2y, x: x, y: y}));
+        };
+
+        /**
+         * Adds a quadratic curve to command
+         */
+        quadraticCurveTo(cpx, cpy, x, y) {
+            this.__currentPosition = {x: x, y: y};
+            this.__addPathCommand(format("Q {cpx} {cpy} {x} {y}", {cpx: cpx, cpy: cpy, x: x, y: y}));
+        };
+
+        /**
+         * Adds the arcTo to the current path
+         *
+         * @see http://www.w3.org/TR/2015/WD-2dcontext-20150514/#dom-context-2d-arcto
+         */
+        arcTo(x1, y1, x2, y2, radius) {
+            // Let the point (x0, y0) be the last point in the subpath.
+            var x0 = this.__currentPosition && this.__currentPosition.x;
+            var y0 = this.__currentPosition && this.__currentPosition.y;
+
+            // First ensure there is a subpath for (x1, y1).
+            if (typeof x0 == "undefined" || typeof y0 == "undefined") {
+                return
+            }
+
+            // Negative values for radius must cause the implementation to throw an IndexSizeError exception.
+            if (radius < 0) {
+                throw new Error("IndexSizeError: The radius provided (" + radius + ") is negative.")
+            }
+
+            // If the point (x0, y0) is equal to the point (x1, y1),
+            // or if the point (x1, y1) is equal to the point (x2, y2),
+            // or if the radius radius is zero,
+            // then the method must add the point (x1, y1) to the subpath,
+            // and connect that point to the previous point (x0, y0) by a straight line.
+            if (((x0 === x1) && (y0 === y1))
+                || ((x1 === x2) && (y1 === y2))
+                || (radius === 0)) {
+                this.lineTo(x1, y1);
+                return
+            }
+
+            // Otherwise, if the points (x0, y0), (x1, y1), and (x2, y2) all lie on a single straight line,
+            // then the method must add the point (x1, y1) to the subpath,
+            // and connect that point to the previous point (x0, y0) by a straight line.
+            var unit_vec_p1_p0 = normalize([x0 - x1, y0 - y1]);
+            var unit_vec_p1_p2 = normalize([x2 - x1, y2 - y1]);
+            if (unit_vec_p1_p0[0] * unit_vec_p1_p2[1] === unit_vec_p1_p0[1] * unit_vec_p1_p2[0]) {
+                this.lineTo(x1, y1);
+                return
+            }
+
+            // Otherwise, let The Arc be the shortest arc given by circumference of the circle that has radius radius,
+            // and that has one point tangent to the half-infinite line that crosses the point (x0, y0) and ends at the point (x1, y1),
+            // and that has a different point tangent to the half-infinite line that ends at the point (x1, y1), and crosses the point (x2, y2).
+            // The points at which this circle touches these two lines are called the start and end tangent points respectively.
+
+            // note that both vectors are unit vectors, so the length is 1
+            var cos = (unit_vec_p1_p0[0] * unit_vec_p1_p2[0] + unit_vec_p1_p0[1] * unit_vec_p1_p2[1]);
+            var theta = Math.acos(Math.abs(cos));
+
+            // Calculate origin
+            var unit_vec_p1_origin = normalize([
+                unit_vec_p1_p0[0] + unit_vec_p1_p2[0],
+                unit_vec_p1_p0[1] + unit_vec_p1_p2[1]
+            ]);
+            var len_p1_origin = radius / Math.sin(theta / 2);
+            var x = x1 + len_p1_origin * unit_vec_p1_origin[0];
+            var y = y1 + len_p1_origin * unit_vec_p1_origin[1];
+
+            // Calculate start angle and end angle
+            // rotate 90deg clockwise (note that y axis points to its down)
+            var unit_vec_origin_start_tangent = [
+                -unit_vec_p1_p0[1],
+                unit_vec_p1_p0[0]
+            ];
+            // rotate 90deg counter clockwise (note that y axis points to its down)
+            var unit_vec_origin_end_tangent = [
+                unit_vec_p1_p2[1],
+                -unit_vec_p1_p2[0]
+            ];
+            var getAngle = function (vector) {
+                // get angle (clockwise) between vector and (1, 0)
+                var x = vector[0];
+                var y = vector[1];
+                if (y >= 0) { // note that y axis points to its down
+                    return Math.acos(x)
+                } else {
+                    return -Math.acos(x)
+                }
+            };
+            var startAngle = getAngle(unit_vec_origin_start_tangent);
+            var endAngle = getAngle(unit_vec_origin_end_tangent);
+
+            // Connect the point (x0, y0) to the start tangent point by a straight line
+            this.lineTo(x + unit_vec_origin_start_tangent[0] * radius,
+                y + unit_vec_origin_start_tangent[1] * radius);
+
+            // Connect the start tangent point to the end tangent point by arc
+            // and adding the end tangent point to the subpath.
+            this.arc(x, y, radius, startAngle, endAngle);
+        };
+
+        /**
+         * Sets the stroke property on the current element
+         */
+        stroke() {
+            if (this.__currentElement.nodeName === "path") {
+                this.__currentElement.setAttribute("paint-order", "fill stroke markers");
+            }
+            this.__applyCurrentDefaultPath();
+            this.__applyStyleToCurrentElement("stroke");
+        };
+
+        /**
+         * Sets fill properties on the current element
+         */
+        fill() {
+            if (this.__currentElement.nodeName === "path") {
+                this.__currentElement.setAttribute("paint-order", "stroke fill markers");
+            }
+            this.__applyCurrentDefaultPath();
+            this.__applyStyleToCurrentElement("fill");
+        };
+
+        /**
+         *  Adds a rectangle to the path.
+         */
+        rect(x, y, width, height) {
+            if (this.__currentElement.nodeName !== "path") {
+                this.beginPath();
+            }
+            this.moveTo(x, y);
+            this.lineTo(x + width, y);
+            this.lineTo(x + width, y + height);
+            this.lineTo(x, y + height);
+            this.lineTo(x, y);
+            this.closePath();
+        };
+
+
+        /**
+         * adds a rectangle element
+         */
+        fillRect(x, y, width, height) {
+
+            if (height < 0) {
+                y += height;
+                height = -height;
+            }
+            if (width < 0) {
+                x += width;
+                width = -width;
+            }
+            // See if rect intersects current viewbox
+            var r2 = {
+                x: x,
+                y: y,
+                width: width,
+                height: height
+            };
+
+            if (this.viewbox) {
+                if (!intersectRect(this.viewbox, r2)) {
+                    return
+                }
+            }
+
+            var rect, parent;
+            rect = this.__createElement("rect", r2, true);
+            parent = this.__closestGroupOrSvg();
+            parent.appendChild(rect);
+            this.__currentElement = rect;
+            this.__applyStyleToCurrentElement("fill");
+        };
+
+        /**
+         * Draws a rectangle with no fill
+         * @param x
+         * @param y
+         * @param width
+         * @param height
+         */
+        strokeRect(x, y, width, height) {
+            var rect, parent;
+            rect = this.__createElement("rect", {
+                x: x,
+                y: y,
+                width: width,
+                height: height
+            }, true);
+            parent = this.__closestGroupOrSvg();
+            parent.appendChild(rect);
+            this.__currentElement = rect;
+            this.__applyStyleToCurrentElement("stroke");
+        };
+
+        // stroke ellipse
+        strokeEllipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW) {
+            this.__ellipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW, 'stroke');
+        }
+
+        // fill ellipse
+        fillEllipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW) {
+            this.__ellipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW, 'fill');
+        }
+
+        // ellipse helper
+        __ellipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW, style) {
+
+            const config =
+                {
+                    cx,
+                    cy,
+                    rx,
+                    ry
+                };
+            const element = this.__createElement('ellipse', config, true);
+            const parent = this.__closestGroupOrSvg();
+            parent.appendChild(element);
+            this.__currentElement = element;
+            this.__applyStyleToCurrentElement(style);
+        }
+
+        /**
+         * Clear entire canvas:
+         * 1. save current transforms
+         * 2. remove all the childNodes of the root g element
+         */
+        __clearCanvas() {
+            var current = this.__closestGroupOrSvg(),
+                transform = current.getAttribute("transform");
+            var rootGroup = this.__root.childNodes[1];
+            var childNodes = rootGroup.childNodes;
+            for (var i = childNodes.length - 1; i >= 0; i--) {
+                if (childNodes[i]) {
+                    rootGroup.removeChild(childNodes[i]);
+                }
+            }
+            this.__currentElement = rootGroup;
+            //reset __groupStack as all the child group nodes are all removed.
+            this.__groupStack = [];
+            if (transform) {
+                this.__addTransform(transform);
+            }
+        };
+
+        /**
+         * "Clears" a canvas by just drawing a white rectangle in the current group.
+         */
+        clearRect(x, y, width, height) {
+            //clear entire canvas
+            if (x === 0 && y === 0 && width === this.width && height === this.height) {
+                this.__clearCanvas();
+                return
+            }
+            var rect, parent = this.__closestGroupOrSvg();
+            rect = this.__createElement("rect", {
+                x: x,
+                y: y,
+                width: width,
+                height: height,
+                fill: "#FFFFFF"
+            }, true);
+            parent.appendChild(rect);
+        };
+
+        /**
+         * Adds a linear gradient to a defs tag.
+         * Returns a canvas gradient object that has a reference to it's parent def
+         */
+        createLinearGradient(x1, y1, x2, y2) {
+            var grad = this.__createElement("linearGradient", {
+                id: randomString(this.__ids),
+                x1: x1 + "px",
+                x2: x2 + "px",
+                y1: y1 + "px",
+                y2: y2 + "px",
+                "gradientUnits": "userSpaceOnUse"
+            }, false);
+            this.__defs.appendChild(grad);
+            return new CanvasGradient(grad, this)
+        };
+
+        /**
+         * Adds a radial gradient to a defs tag.
+         * Returns a canvas gradient object that has a reference to it's parent def
+         */
+        createRadialGradient(x0, y0, r0, x1, y1, r1) {
+            var grad = this.__createElement("radialGradient", {
+                id: randomString(this.__ids),
+                cx: x1 + "px",
+                cy: y1 + "px",
+                r: r1 + "px",
+                fx: x0 + "px",
+                fy: y0 + "px",
+                "gradientUnits": "userSpaceOnUse"
+            }, false);
+            this.__defs.appendChild(grad);
+            return new CanvasGradient(grad, this)
+
+        };
+
+        /**
+         * Parses the font string and returns svg mapping
+         * @private
+         */
+        __parseFont() {
+            var regex = /^\s*(?=(?:(?:[-a-z]+\s*){0,2}(italic|oblique))?)(?=(?:(?:[-a-z]+\s*){0,2}(small-caps))?)(?=(?:(?:[-a-z]+\s*){0,2}(bold(?:er)?|lighter|[1-9]00))?)(?:(?:normal|\1|\2|\3)\s*){0,3}((?:xx?-)?(?:small|large)|medium|smaller|larger|[.\d]+(?:\%|in|[cem]m|ex|p[ctx]))(?:\s*\/\s*(normal|[.\d]+(?:\%|in|[cem]m|ex|p[ctx])))?\s*([-,\'\"\sa-z0-9]+?)\s*$/i;
+            var fontPart = regex.exec(this.font);
+            var data = {
+                style: fontPart[1] || 'normal',
+                size: fontPart[4] || '10px',
+                family: fontPart[6] || 'sans-serif',
+                weight: fontPart[3] || 'normal',
+                decoration: fontPart[2] || 'normal',
+                href: null
+            };
+
+            //canvas doesn't support underline natively, but we can pass this attribute
+            if (this.__fontUnderline === "underline") {
+                data.decoration = "underline";
+            }
+
+            //canvas also doesn't support linking, but we can pass this as well
+            if (this.__fontHref) {
+                data.href = this.__fontHref;
+            }
+
+            return data
+        };
+
+        /**
+         * Helper to link text fragments
+         * @param font
+         * @param element
+         * @return {*}
+         * @private
+         */
+        __wrapTextLink(font, element) {
+            if (font.href) {
+                var a = this.__createElement("a");
+                a.setAttributeNS("http://www.w3.org/1999/xlink", "xlink:href", font.href);
+                a.appendChild(element);
+                return a
+            }
+            return element
+        };
+
+        /**
+         * Fills or strokes text
+         * @param text
+         * @param x
+         * @param y
+         * @param action - stroke or fill
+         * @private
+         */
+        __applyText(text, x, y, action) {
+            var font = this.__parseFont(),
+                parent = this.__closestGroupOrSvg(),
+                textElement = this.__createElement("text", {
+                    "font-family": font.family,
+                    "font-size": font.size,
+                    "font-style": font.style,
+                    "font-weight": font.weight,
+                    "text-decoration": font.decoration,
+                    "x": x,
+                    "y": y,
+                    "text-anchor": getTextAnchor(this.textAlign),
+                    "dominant-baseline": getDominantBaseline(this.textBaseline)
+                }, true);
+
+            textElement.appendChild(this.__document.createTextNode(text));
+            this.__currentElement = textElement;
+            this.__applyStyleToCurrentElement(action);
+            parent.appendChild(this.__wrapTextLink(font, textElement));
+        };
+
+        /**
+         * Creates a text element
+         * @param text
+         * @param x
+         * @param y
+         */
+        fillText(text, x, y) {
+            this.__applyText(text, x, y, "fill");
+        };
+
+        /**
+         * Strokes text
+         * @param text
+         * @param x
+         * @param y
+         */
+        strokeText(text, x, y) {
+            this.__applyText(text, x, y, "stroke");
+        };
+
+        /**
+         * No need to implement this for svg.
+         * @param text
+         * @return {TextMetrics}
+         */
+        measureText(text) {
+            this.__ctx.font = this.font;
+            return this.__ctx.measureText(text)
+        };
+
+        /**
+         *  Arc command!
+         */
+        arc(x, y, radius, startAngle, endAngle, counterClockwise) {
+            // in canvas no circle is drawn if no angle is provided.
+            if (startAngle === endAngle) {
+                return
+            }
+            startAngle = startAngle % (2 * Math.PI);
+            endAngle = endAngle % (2 * Math.PI);
+            if (startAngle === endAngle) {
+                //circle time! subtract some of the angle so svg is happy (svg elliptical arc can't draw a full circle)
+                endAngle = ((endAngle + (2 * Math.PI)) - 0.001 * (counterClockwise ? -1 : 1)) % (2 * Math.PI);
+            }
+            var endX = x + radius * Math.cos(endAngle),
+                endY = y + radius * Math.sin(endAngle),
+                startX = x + radius * Math.cos(startAngle),
+                startY = y + radius * Math.sin(startAngle),
+                sweepFlag = counterClockwise ? 0 : 1,
+                largeArcFlag = 0,
+                diff = endAngle - startAngle;
+
+            // https://github.com/gliffy/canvas2svg/issues/4
+            if (diff < 0) {
+                diff += 2 * Math.PI;
+            }
+
+            if (counterClockwise) {
+                largeArcFlag = diff > Math.PI ? 0 : 1;
+            } else {
+                largeArcFlag = diff > Math.PI ? 1 : 0;
+            }
+
+            this.lineTo(startX, startY);
+            this.__addPathCommand(format("A {rx} {ry} {xAxisRotation} {largeArcFlag} {sweepFlag} {endX} {endY}",
+                {
+                    rx: radius,
+                    ry: radius,
+                    xAxisRotation: 0,
+                    largeArcFlag: largeArcFlag,
+                    sweepFlag: sweepFlag,
+                    endX: endX,
+                    endY: endY
+                }));
+
+            this.__currentPosition = {x: endX, y: endY};
+        };
+
+        /**
+         * The ellipse() method creates an elliptical arc centered at (x, y) with the radii radiusX and radiusY. The path
+         * starts at startAngle and ends at endAngle, and travels in the direction given by counterclockwise (defaulting to clockwise).
+         */
+    // ellipse (x, y, radiusX, radiusY, rotation, startAngle, endAngle, counterclockwise) {
+    //     // TODO -- implement
+    // }
+
+        /**
+         * Generates a ClipPath from the clip command.
+         */
+        clip() {
+            var group = this.__closestGroupOrSvg(),
+                clipPath = this.__createElement("clipPath"),
+                id = randomString(this.__ids),
+                newGroup = this.__createElement("g");
+
+            this.__applyCurrentDefaultPath();
+            group.removeChild(this.__currentElement);
+            clipPath.setAttribute("id", id);
+            clipPath.appendChild(this.__currentElement);
+
+            this.__defs.appendChild(clipPath);
+
+            //set the clip path to this group
+            group.setAttribute("clip-path", format("url(#{id})", {id: id}));
+
+            //clip paths can be scaled and transformed, we need to add another wrapper group to avoid later transformations
+            // to this path
+            group.appendChild(newGroup);
+
+            this.__currentElement = newGroup;
+
+        };
+
+        /**
+         * Draws a canvas, image or mock context to this canvas.
+         * Note that all svg dom manipulation uses node.childNodes rather than node.children for IE support.
+         * http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#dom-context-2d-drawimage
+         */
+        drawImage() {
+            //convert arguments to a real array
+            var args = Array.prototype.slice.call(arguments),
+                image = args[0],
+                dx, dy, dw, dh, sx = 0, sy = 0, sw, sh, parent, svg, defs, group,
+                svgImage, canvas, context, id;
+
+            if (args.length === 3) {
+                dx = args[1];
+                dy = args[2];
+                sw = image.width;
+                sh = image.height;
+                dw = sw;
+                dh = sh;
+            } else if (args.length === 5) {
+                dx = args[1];
+                dy = args[2];
+                dw = args[3];
+                dh = args[4];
+                sw = image.width;
+                sh = image.height;
+            } else if (args.length === 9) {
+                sx = args[1];
+                sy = args[2];
+                sw = args[3];
+                sh = args[4];
+                dx = args[5];
+                dy = args[6];
+                dw = args[7];
+                dh = args[8];
+            } else {
+                throw new Error("Invalid number of arguments passed to drawImage: " + arguments.length)
+            }
+
+            parent = this.__closestGroupOrSvg();
+            this.__currentElement;
+            var translateDirective = "translate(" + dx + ", " + dy + ")";
+            if (image instanceof ctx) {
+                //canvas2svg mock canvas context. In the future we may want to clone nodes instead.
+                //also I'm currently ignoring dw, dh, sw, sh, sx, sy for a mock context.
+                svg = image.getSvg().cloneNode(true);
+                if (svg.childNodes && svg.childNodes.length > 1) {
+                    defs = svg.childNodes[0];
+                    while (defs.childNodes.length) {
+                        id = defs.childNodes[0].getAttribute("id");
+                        this.__ids[id] = id;
+                        this.__defs.appendChild(defs.childNodes[0]);
+                    }
+                    group = svg.childNodes[1];
+                    if (group) {
+                        //save original transform
+                        var originTransform = group.getAttribute("transform");
+                        var transformDirective;
+                        if (originTransform) {
+                            transformDirective = originTransform + " " + translateDirective;
+                        } else {
+                            transformDirective = translateDirective;
+                        }
+                        group.setAttribute("transform", transformDirective);
+                        parent.appendChild(group);
+                    }
+                }
+            } else if (image.nodeName === "CANVAS" || image.nodeName === "IMG") {
+                //canvas or image
+                svgImage = this.__createElement("image");
+                svgImage.setAttribute("width", dw);
+                svgImage.setAttribute("height", dh);
+                svgImage.setAttribute("preserveAspectRatio", "none");
+
+                if (sx || sy || sw !== image.width || sh !== image.height) {
+                    //crop the image using a temporary canvas
+                    canvas = this.__document.createElement("canvas");
+                    canvas.width = dw;
+                    canvas.height = dh;
+                    context = canvas.getContext("2d");
+                    context.drawImage(image, sx, sy, sw, sh, 0, 0, dw, dh);
+                    image = canvas;
+                }
+                svgImage.setAttribute("transform", translateDirective);
+                svgImage.setAttributeNS("http://www.w3.org/1999/xlink", "xlink:href",
+                    image.nodeName === "CANVAS" ? image.toDataURL() : image.getAttribute("src"));
+                parent.appendChild(svgImage);
+            }
+        };
+
+        /**
+         * Generates a pattern tag
+         */
+        createPattern(image, repetition) {
+
+            let pattern = this.__document.__createElement("pattern");
+            let id = randomString(this.__ids);
+            let img;
+
+            pattern.setAttribute("id", id);
+            pattern.setAttribute("width", image.width);
+            pattern.setAttribute("height", image.height);
+            if (image.nodeName === "CANVAS" || image.nodeName === "IMG") {
+                img = this.__createElement("image");
+                img.setAttribute("width", image.width);
+                img.setAttribute("height", image.height);
+                img.setAttributeNS("http://www.w3.org/1999/xlink", "xlink:href",
+                    image.nodeName === "CANVAS" ? image.toDataURL() : image.getAttribute("src"));
+                pattern.appendChild(img);
+                this.__defs.appendChild(pattern);
+            } else if (image instanceof ctx) {
+                pattern.appendChild(image.__root.childNodes[1]);
+                this.__defs.appendChild(pattern);
+            }
+            return new CanvasPattern(pattern, this)
+        };
+
+        setLineDash(dashArray) {
+            if (dashArray && dashArray.length > 0) {
+                this.lineDash = dashArray.join(",");
+            } else {
+                this.lineDash = null;
+            }
+        };
+
+        /**
+         * Not yet implemented
+         */
+        drawFocusRing() {
+        };
+
+        createImageData() {
+        };
+
+        getImageData() {
+        };
+
+        putImageData() {
+        };
+
+        globalCompositeOperation() {
+        };
+
+        setTransform() {
+        };
+    }
+
+    const Cytoband = function (start, end, name, typestain) {
+        this.start = start;
+        this.end = end;
+        this.name = name;
+        this.stain = 0;
+
+        // Set the type, either p, n, or c
+        if (typestain === 'acen') {
+            this.type = 'c';
+        } else {
+            this.type = typestain.charAt(1);
+            if (this.type === 'p') {
+                this.stain = parseInt(typestain.substring(4));
+            }
+        }
+    };
+
+    const _version = "2.15.11";
+    function version() {
+        return _version
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const DEFAULT_GENOMES_URL = "https://igv.org/genomes/genomes.json";
+    const BACKUP_GENOMES_URL = "https://s3.amazonaws.com/igv.org.genomes/genomes.json";
+
+    const splitLines$1 = splitLines$5;
+
+    const GenomeUtils = {
+
+        loadGenome: async function (options) {
+
+            const cytobandUrl = options.cytobandURL;
+            const aliasURL = options.aliasURL;
+            const sequence = await loadFasta(options);
+
+            let aliases;
+            if (aliasURL) {
+                aliases = await loadAliases(aliasURL, sequence.config);
+            }
+
+            const genome = new Genome(options, sequence, aliases);
+
+            // Delay loading cytbands untils after genome initialization to use chromosome aliases (1 vs chr1, etc).
+            if (cytobandUrl) {
+                genome.cytobands = await loadCytobands(cytobandUrl, sequence.config, genome);
+            }
+
+            return genome
+        },
+
+        initializeGenomes: async function (config) {
+
+            if (!GenomeUtils.KNOWN_GENOMES) {
+
+                const table = {};
+
+                // Get default genomes
+                if (config.loadDefaultGenomes !== false) {
+                    try {
+                        const url = DEFAULT_GENOMES_URL + `?randomSeed=${Math.random().toString(36)}&version=${version()}`;  // prevent caching
+                        const jsonArray = await igvxhr.loadJson(url, {timeout: 5000});
+                        processJson(jsonArray);
+                    } catch (e) {
+                        console.error(e);
+                        try {
+                            const url = BACKUP_GENOMES_URL + `?randomSeed=${Math.random().toString(36)}&version=${version()}`;  // prevent caching
+                            const jsonArray = await igvxhr.loadJson(url, {});
+                            processJson(jsonArray);
+                        } catch (e) {
+                            console.error(e);
+                            console.warn("Errors loading default genome definitions.");
+                        }
+                    }
+                }
+
+                // Add user-defined genomes
+                const genomeList = config.genomeList || config.genomes;
+                if (genomeList) {
+                    if (typeof genomeList === 'string') {
+                        const jsonArray = await igvxhr.loadJson(genomeList, {});
+                        processJson(jsonArray);
+                    } else {
+                        processJson(genomeList);
+                    }
+                }
+
+                GenomeUtils.KNOWN_GENOMES = table;
+
+                function processJson(jsonArray) {
+                    jsonArray.forEach(function (json) {
+                        table[json.id] = json;
+                    });
+                    return table
+                }
+            }
+        },
+
+        isWholeGenomeView: function (chr) {
+            return 'all' === chr.toLowerCase()
+        },
+
+        // Expand a genome id to a reference object, if needed
+        expandReference: function (alert, idOrConfig) {
+
+            // idOrConfig might be json
+            if (isString$2(idOrConfig) && idOrConfig.startsWith("{")) {
+                try {
+                    idOrConfig = JSON.parse(idOrConfig);
+                } catch (e) {
+                    // Apparently its not json,  could be an ID starting with "{".  Unusual but legal.
+                }
+            }
+
+            let genomeID;
+            if (isString$2(idOrConfig)) {
+                genomeID = idOrConfig;
+            } else if (idOrConfig.genome) {
+                genomeID = idOrConfig.genome;
+            } else if (idOrConfig.id !== undefined && idOrConfig.fastaURL === undefined) {
+                // Backward compatibility
+                genomeID = idOrConfig.id;
+            }
+
+            if (genomeID) {
+                const knownGenomes = GenomeUtils.KNOWN_GENOMES;
+                const reference = knownGenomes[genomeID];
+                if (!reference) {
+                    alert.present(new Error(`Unknown genome id: ${genomeID}`), undefined);
+                }
+                return reference
+            } else {
+                return idOrConfig
+            }
+        }
+    };
+
+
+    class Genome {
+
+        constructor(config, sequence, aliases) {
+
+            this.config = config;
+            this.id = config.id || generateGenomeID(config);
+            this.sequence = sequence;
+            this.chromosomeNames = sequence.chromosomeNames;
+            this.chromosomes = sequence.chromosomes;  // An object (functions as a dictionary)
+            this.featureDB = new Map();   // Hash of name -> feature, used for search function.
+
+            this.wholeGenomeView = config.wholeGenomeView === undefined || config.wholeGenomeView;
+            if (this.wholeGenomeView && Object.keys(sequence.chromosomes).length > 1) {
+                constructWG(this, config);
+            } else {
+                this.wgChromosomeNames = sequence.chromosomeNames;
+            }
+
+            /**
+             * Return the official chromosome name for the (possibly) alias.  Deals with
+             * 1 <-> chr1,  chrM <-> MT,  IV <-> chr4, etc.
+             * @param str
+             */
+            var chrAliasTable = {},
+                self = this;
+
+
+            // The standard mappings
+            chrAliasTable["all"] = "all";
+            this.chromosomeNames.forEach(function (name) {
+                var alias = name.startsWith("chr") ? name.substring(3) : "chr" + name;
+                chrAliasTable[alias.toLowerCase()] = name;
+                if (name === "chrM") chrAliasTable["mt"] = "chrM";
+                if (name === "MT") chrAliasTable["chrm"] = "MT";
+                chrAliasTable[name.toLowerCase()] = name;
+            });
+
+            // Custom mappings
+            if (aliases) {
+                aliases.forEach(function (array) {
+                    // Find the official chr name
+                    var defName, i;
+
+                    for (i = 0; i < array.length; i++) {
+                        if (self.chromosomes[array[i]]) {
+                            defName = array[i];
+                            break
+                        }
+                    }
+
+                    if (defName) {
+                        array.forEach(function (alias) {
+                            if (alias !== defName) {
+                                chrAliasTable[alias.toLowerCase()] = defName;
+                                chrAliasTable[alias] = defName;      // Should not be needed
+                            }
+                        });
+                    }
+
+                });
+            }
+
+            this.chrAliasTable = chrAliasTable;
+
+        }
+
+        showWholeGenomeView() {
+            return this.config.wholeGenomeView !== false
+        }
+
+        toJSON() {
+            return Object.assign({}, this.config, {tracks: undefined})
+        }
+
+        getInitialLocus() {
+
+        }
+
+        getHomeChromosomeName() {
+            if (this.showWholeGenomeView() && this.chromosomes.hasOwnProperty("all")) {
+                return "all"
+            } else {
+                return this.chromosomeNames[0]
+
+            }
+        }
+
+        getChromosomeName(str) {
+            const chr = str ? this.chrAliasTable[str.toLowerCase()] : str;
+            return chr ? chr : str
+        }
+
+        getChromosome(chr) {
+            chr = this.getChromosomeName(chr);
+            return this.chromosomes[chr]
+        }
+
+        getCytobands(chr) {
+            return this.cytobands ? this.cytobands[chr] : null
+        }
+
+        getLongestChromosome() {
+
+            var longestChr,
+                chromosomes = this.chromosomes;
+            for (let key in chromosomes) {
+                if (chromosomes.hasOwnProperty(key)) {
+                    var chr = chromosomes[key];
+                    if (longestChr === undefined || chr.bpLength > longestChr.bpLength) {
+                        longestChr = chr;
+                    }
+                }
+                return longestChr
+            }
+        }
+
+        getChromosomes() {
+            return this.chromosomes
+        }
+
+        /**
+         * Return the genome coordinate in kb for the give chromosome and position.
+         * NOTE: This might return undefined if the chr is filtered from whole genome view.
+         */
+        getGenomeCoordinate(chr, bp) {
+
+            var offset = this.getCumulativeOffset(chr);
+            if (offset === undefined) return undefined
+
+            return offset + bp
+        }
+
+        /**
+         * Return the chromosome and coordinate in bp for the given genome coordinate
+         */
+        getChromosomeCoordinate(genomeCoordinate) {
+
+            if (this.cumulativeOffsets === undefined) {
+                this.cumulativeOffsets = computeCumulativeOffsets.call(this);
+            }
+
+            let lastChr = undefined;
+            let lastCoord = 0;
+            for (let name of this.wgChromosomeNames) {
+
+                const cumulativeOffset = this.cumulativeOffsets[name];
+                if (cumulativeOffset > genomeCoordinate) {
+                    const position = genomeCoordinate - lastCoord;
+                    return {chr: lastChr, position: position}
+                }
+                lastChr = name;
+                lastCoord = cumulativeOffset;
+            }
+
+            // If we get here off the end
+            return {chr: this.wgChromosomeNames[this.wgChromosomeNames.length - 1], position: 0}
+
+        };
+
+
+        /**
+         * Return the offset in genome coordinates (kb) of the start of the given chromosome
+         * NOTE:  This might return undefined if the chromosome is filtered from whole genome view.
+         */
+        getCumulativeOffset(chr) {
+
+            if (this.cumulativeOffsets === undefined) {
+                this.cumulativeOffsets = computeCumulativeOffsets.call(this);
+            }
+
+            const queryChr = this.getChromosomeName(chr);
+            return this.cumulativeOffsets[queryChr]
+
+            function computeCumulativeOffsets() {
+
+                let self = this;
+                let acc = {};
+                let offset = 0;
+                for (let name of self.wgChromosomeNames) {
+
+                    acc[name] = Math.floor(offset);
+
+                    const chromosome = self.getChromosome(name);
+
+                    offset += chromosome.bpLength;
+                }
+
+                return acc
+            }
+        }
+
+        /**
+         * Return the nominal genome length, this is the length of the main chromosomes (no scaffolds, etc).
+         */
+        getGenomeLength() {
+
+            let self = this;
+
+            if (!this.bpLength) {
+                let bpLength = 0;
+                self.wgChromosomeNames.forEach(function (cname) {
+                    let c = self.chromosomes[cname];
+                    bpLength += c.bpLength;
+                });
+                this.bpLength = bpLength;
+            }
+            return this.bpLength
+        }
+
+        async getSequence(chr, start, end) {
+            chr = this.getChromosomeName(chr);
+            return this.sequence.getSequence(chr, start, end)
+        }
+
+        addFeaturesToDB(featureList, config) {
+
+            const insertFeature = (name, feature) => {
+                const current = this.featureDB.get(name);
+                if (current) {
+                    feature = (feature.end - feature.start) > (current.end - current.start) ? feature : current;
+
+                }
+                this.featureDB.set(name, feature);
+            };
+
+            for (let feature of featureList) {
+                if (feature.name) {
+                    insertFeature(feature.name.toUpperCase(), feature);
+                }
+                if (feature.gene && feature.gene.name) {
+                    insertFeature(feature.gene.name.toUpperCase(), feature);
+                }
+
+                if (config.searchableFields) {
+                    for (let f of config.searchableFields) {
+                        const value = feature.getAttributeValue(f);
+                        if (value) {
+                            if (value.indexOf(" ") > 0) {
+                                insertFeature(value.replaceAll(" ", "+").toUpperCase(), feature);
+                            } else {
+                                insertFeature(value.toUpperCase(), feature);
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    async function loadCytobands(cytobandUrl, config, genome) {
+
+        let data;
+        if (isDataURL(cytobandUrl)) {
+            const plain = decodeDataURI$1(cytobandUrl);
+            data = "";
+            const len = plain.length;
+            for (let i = 0; i < len; i++) {
+                data += String.fromCharCode(plain[i]);
+            }
+        } else {
+            data = await igvxhr.loadString(cytobandUrl, buildOptions(config));
+        }
+
+        // var bands = [],
+        //     lastChr,
+        //     n = 0,
+        //     c = 1,
+        //
+        //     len = lines.length,
+        const cytobands = {};
+        let lastChr;
+        let bands = [];
+        const lines = splitLines$1(data);
+        for (let line of lines) {
+            var tokens = line.split("\t");
+            var chr = genome.getChromosomeName(tokens[0]);
+            if (!lastChr) lastChr = chr;
+
+            if (chr !== lastChr) {
+                cytobands[lastChr] = bands;
+                bands = [];
+                lastChr = chr;
+            }
+
+            if (tokens.length === 5) {
+                //10	0	3000000	p15.3	gneg
+                var start = parseInt(tokens[1]);
+                var end = parseInt(tokens[2]);
+                var name = tokens[3];
+                var stain = tokens[4];
+                bands.push(new Cytoband(start, end, name, stain));
+            }
+        }
+
+        return cytobands
+    }
+
+    function loadAliases(aliasURL, config) {
+
+        return igvxhr.loadString(aliasURL, buildOptions(config))
+
+            .then(function (data) {
+
+                var lines = splitLines$1(data),
+                    aliases = [];
+
+                lines.forEach(function (line) {
+                    if (!line.startsWith("#") && line.length > 0) aliases.push(line.split("\t"));
+                });
+
+                return aliases
+            })
+
+    }
+
+    function constructWG(genome, config) {
+
+        let wgChromosomes;
+        if (config.chromosomeOrder) {
+            if (Array.isArray(config.chromosomeOrder)) {
+                genome.wgChromosomeNames = config.chromosomeOrder;
+            } else {
+                genome.wgChromosomeNames = config.chromosomeOrder.split(',').map(nm => nm.trim());
+            }
+            wgChromosomes = genome.wgChromosomeNames.map(nm => genome.chromosomes[nm]).filter(chr => chr !== undefined);
+
+        } else {
+
+            // Trim small chromosomes.
+            const lengths = Object.keys(genome.chromosomes).map(key => genome.chromosomes[key].bpLength);
+            const median = lengths.reduce((a, b) => Math.max(a, b));
+            const threshold = median / 50;
+            wgChromosomes = Object.values(genome.chromosomes).filter(chr => chr.bpLength > threshold);
+
+            // Sort chromosomes.  First segregate numeric and alpha names, sort numeric, leave alpha as is
+            const numericChromosomes = wgChromosomes.filter(chr => isDigit(chr.name.replace('chr', '')));
+            const alphaChromosomes = wgChromosomes.filter(chr => !isDigit(chr.name.replace('chr', '')));
+            numericChromosomes.sort((a, b) => Number.parseInt(a.name.replace('chr', '')) - Number.parseInt(b.name.replace('chr', '')));
+
+            const wgChromosomeNames = numericChromosomes.map(chr => chr.name);
+            for (let chr of alphaChromosomes) {
+                wgChromosomeNames.push(chr.name);
+            }
+            genome.wgChromosomeNames = wgChromosomeNames;
+        }
+
+
+        // Compute psuedo-chromosome "all"
+        const l = wgChromosomes.reduce((accumulator, currentValue) => accumulator += currentValue.bpLength, 0);
+        genome.chromosomes["all"] = {
+            name: "all",
+            bpLength: l
+        };
+
+        function isDigit(val) {
+            return /^\d+$/.test(val)
+        }
+
+    }
+
+    function generateGenomeID(config) {
+        if (config.id !== undefined) {
+            return config.id
+        } else if (config.fastaURL && isString$2(config.fastaURL)) {
+            return config.fastaURL
+        } else if (config.fastaURL && config.fastaURL.name) {
+            return config.fastaURL.name
+        } else {
+            return ("0000" + (Math.random() * Math.pow(36, 4) << 0).toString(36)).slice(-4)
+        }
+    }
+
+    /**
+     * Created by dat on 9/16/16.
+     */
+
+    const NOT_LOADED_MESSAGE = 'Error loading track data';
+    let lastClickTime = 0;
+    let lastHoverUpdateTime = 0;
+    let popupTimerID;
+
+    class TrackViewport extends Viewport {
+
+        constructor(trackView, viewportColumn, referenceFrame, width) {
+            super(trackView, viewportColumn, referenceFrame, width);
+        }
+
+        initializationHelper() {
+
+            this.$spinner = $$1('<div>', {class: 'igv-loading-spinner-container'});
+            this.$viewport.append(this.$spinner);
+            this.$spinner.append($$1('<div>'));
+
+            const track = this.trackView.track;
+            if ('sequence' !== track.type) {
+                this.$zoomInNotice = this.createZoomInNotice(this.$viewport);
+            }
+
+            if (track.name && "sequence" !== track.id) {
+                this.$trackLabel = $$1('<div class="igv-track-label">');
+                this.$viewport.append(this.$trackLabel);
+                this.setTrackLabel(track.name);
+                if (false === this.browser.trackLabelsVisible) {
+                    this.$trackLabel.hide();
+                }
+            }
+
+            this.stopSpinner();
+            this.addMouseHandlers();
+        }
+
+        setContentHeight(contentHeight) {
+            super.setContentHeight(contentHeight);
+            if (this.featureCache) this.featureCache.redraw = true;
+        }
+
+        setTrackLabel(label) {
+
+            this.$trackLabel.empty();
+            this.$trackLabel.html(label);
+
+            const txt = this.$trackLabel.text();
+            this.$trackLabel.attr('title', txt);
+        }
+
+        startSpinner() {
+            this.$spinner.show();
+        }
+
+        stopSpinner() {
+            if (this.$spinner) {
+                this.$spinner.hide();
+            }
+        }
+
+        /**
+         * Test to determine if we are zoomed in far enough to see features. Applicable to tracks with visibility windows.
+         *
+         * As a side effect the viewports canvas is removed if zoomed out.
+         *
+         * @returns {boolean} true if we are zoomed in past visibility window, false otherwise
+         */
+        checkZoomIn() {
+
+            const zoomedOutOfWindow = () => {
+                if (this.referenceFrame.chr.toLowerCase() === "all" && !this.trackView.track.supportsWholeGenome) {
+                    return true
+                } else {
+                    const visibilityWindow = this.trackView.track.visibilityWindow;
+                    return (
+                        visibilityWindow !== undefined && visibilityWindow > 0 &&
+                        (this.referenceFrame.bpPerPixel * this.$viewport.width() > visibilityWindow))
+                }
+            };
+
+            if (this.trackView.track && "sequence" === this.trackView.track.type && this.referenceFrame.bpPerPixel > bppFeatureFetchThreshold) {
+                $$1(this.canvas).remove();
+                this.canvas = undefined;
+                //this.featureCache = undefined
+                return false
+            }
+
+            if (!(this.viewIsReady())) {
+                return false
+            }
+
+
+            if (zoomedOutOfWindow()) {
+
+                // Out of visibility window
+                if (this.canvas) {
+                    $$1(this.canvas).remove();
+                    this.canvas = undefined;
+                    //this.featureCache = undefined
+                }
+                if (this.trackView.track.autoHeight) {
+                    const minHeight = this.trackView.minHeight || 0;
+                    this.setContentHeight(minHeight);
+                }
+                if (this.$zoomInNotice) {
+                    this.$zoomInNotice.show();
+                }
+                return false
+            } else {
+                if (this.$zoomInNotice) {
+                    this.$zoomInNotice.hide();
+                }
+                return true
+            }
+
+        }
+
+        /**
+         * Adjust the canvas to the current genomic state.
+         */
+        shift() {
+            const referenceFrame = this.referenceFrame;
+            if (this.canvas &&
+                this.canvas._data &&
+                this.canvas._data.referenceFrame.chr === this.referenceFrame.chr &&
+                this.canvas._data.bpPerPixel === referenceFrame.bpPerPixel) {
+                const pixelOffset = Math.round((this.canvas._data.bpStart - referenceFrame.start) / referenceFrame.bpPerPixel);
+                this.canvas.style.left = pixelOffset + "px";
+            }
+        }
+
+        /**
+         * Set the content top of the current view.  This is triggered by scrolling.   If the current canvas extent is not
+         * sufficient to cover the new vertical range repaint.
+         *
+         * @param contentTop - the "top" property of the virtual content div, 0 unless track is scrolled vertically
+         *
+         *
+         */
+        setTop(contentTop) {
+
+            super.setTop(contentTop);
+
+            if (!this.canvas) {
+                this.repaint();
+            } else {
+                // See if currently painted canvas covers the vertical range of the viewport.  If not repaint
+                const h = this.$viewport.height();
+                const vt = contentTop + this.canvas._data.pixelTop;
+                const vb = vt + this.canvas._data.pixelHeight;
+                if (vt > 0 || vb < h) {
+                    this.repaint();
+                }
+            }
+
+            // Now offset backing canvas to align with the contentTop visual offset.
+            let offset = contentTop + this.canvas._data.pixelTop;
+            this.canvas.style.top = `${offset}px`;
+        }
+
+        async loadFeatures() {
+
+            const referenceFrame = this.referenceFrame;
+            const chr = referenceFrame.chr;
+
+            // Expand the requested range so we can pan a bit without reloading.  But not beyond chromosome bounds
+            const chrLength = this.browser.genome.getChromosome(chr).bpLength;
+            const pixelWidth = this.$viewport.width();// * 3;
+            const bpWidth = pixelWidth * referenceFrame.bpPerPixel;
+            const bpStart = Math.floor(Math.max(0, referenceFrame.start - bpWidth));
+            const bpEnd = Math.ceil(Math.min(chrLength, referenceFrame.start + bpWidth + bpWidth));  // Add one screen width to end
+
+            if (this.loading && this.loading.start === bpStart && this.loading.end === bpEnd) {
+                return undefined
+            }
+            this.loading = {start: bpStart, end: bpEnd};
+            this.startSpinner();
+
+            try {
+                const track = this.trackView.track;
+                const features = await this.getFeatures(track, chr, bpStart, bpEnd, referenceFrame.bpPerPixel);
+                if (features) {
+                    let roiFeatures = [];
+                    if (track.roiSets && track.roiSets.length > 0) {
+                        for (let roiSet of track.roiSets) {
+                            const features = await roiSet.getFeatures(chr, bpStart, bpEnd, referenceFrame.bpPerPixel);
+                            roiFeatures.push({track: roiSet, features});
+                        }
+                    }
+
+                    const mr = track && ("wig" === track.type || "merged" === track.type);   // wig tracks are potentially multiresolution (e.g. bigwig)
+                    this.featureCache = new FeatureCache(chr, bpStart, bpEnd, referenceFrame.bpPerPixel, features, roiFeatures, mr);
+                    this.loading = false;
+                    this.hideMessage();
+                    this.stopSpinner();
+                    return this.featureCache
+                }
+            } catch (error) {
+                // Track might have been removed during load
+                if (this.trackView && this.trackView.disposed !== true) {
+                    this.showMessage(NOT_LOADED_MESSAGE);
+                    this.browser.alert.present(error);
+                    console.error(error);
+                }
+            } finally {
+                this.loading = false;
+                this.stopSpinner();
+            }
+        }
+
+        /**
+         * Compute the genomic extent and needed pixelWidth to repaint the canvas for the current genomic state.
+         * Normally the canvas is size 3X the width of the viewport, however there is no left-right panning for WGV so
+         * canvas width is viewport width.
+         * @returns {{bpEnd: *, pixelWidth: (*|number), bpStart: number}}
+         */
+        repaintDimensions() {
+            const isWGV = GenomeUtils.isWholeGenomeView(this.referenceFrame.chr);
+            const pixelWidth = isWGV ? this.$viewport.width() : 3 * this.$viewport.width();
+            const bpPerPixel = this.referenceFrame.bpPerPixel;
+            const bpStart = this.referenceFrame.start - (isWGV ? 0 : pixelWidth / 3 * bpPerPixel);
+            const bpEnd = this.referenceFrame.end + (isWGV ? 0 : pixelWidth / 3 * bpPerPixel);
+            return {
+                bpStart, bpEnd, pixelWidth
+            }
+        }
+
+        /**
+         * Repaint the canvas using the cached features
+         *
+         */
+        repaint() {
+
+            if (undefined === this.featureCache) {
+                return
+            }
+
+            const {features, roiFeatures} = this.featureCache;
+
+            // Canvas dimensions.
+            // For deep tracks we paint a canvas == 3*viewportHeight centered on the current vertical scroll position
+            const {bpStart, bpEnd, pixelWidth} = this.repaintDimensions();
+            const viewportHeight = this.$viewport.height();
+            const contentHeight = this.getContentHeight();
+            const maxHeight = roiFeatures ? Math.max(contentHeight, viewportHeight) : contentHeight;  // Need to fill viewport for ROIs.
+            const pixelHeight = Math.min(maxHeight, 3 * viewportHeight);
+            if (0 === pixelWidth || 0 === pixelHeight) {
+                if (this.canvas) {
+                    $$1(this.canvas).remove();
+                }
+                return
+            }
+            const pixelTop = Math.max(0, -this.contentTop - Math.floor(pixelHeight / 3));
+
+            const bpPerPixel = this.referenceFrame.bpPerPixel;
+            const pixelXOffset = Math.round((bpStart - this.referenceFrame.start) / bpPerPixel);
+            const canvasTop = (this.contentTop || 0) + pixelTop;
+            const newCanvas = document.createElement('canvas');//  $('<canvas class="igv-canvas">').get(0)
+            newCanvas.style.position = 'relative';
+            newCanvas.style.display = 'block';
+            newCanvas.style.width = pixelWidth + "px";
+            newCanvas.style.height = pixelHeight + "px";
+            newCanvas.style.left = pixelXOffset + "px";
+            newCanvas.style.top = canvasTop + "px";
+
+            // Always use high DPI if in "FILL" display mode, otherwise use track setting;
+            const devicePixelRatio = ("FILL" === this.trackView.track.displayMode || this.trackView.track.supportHiDPI !== false) ?
+                window.devicePixelRatio : 1;
+            newCanvas.width = devicePixelRatio * pixelWidth;
+            newCanvas.height = devicePixelRatio * pixelHeight;
+
+            const ctx = newCanvas.getContext("2d");
+            ctx.scale(devicePixelRatio, devicePixelRatio);
+            ctx.translate(0, -pixelTop);
+
+            const drawConfiguration =
+                {
+                    context: ctx,
+                    pixelXOffset,
+                    pixelWidth,
+                    pixelHeight,
+                    pixelTop,
+                    bpStart,
+                    bpEnd: bpEnd,
+                    bpPerPixel,
+                    referenceFrame: this.referenceFrame,
+                    selection: this.selection,
+                    viewport: this,
+                    viewportWidth: this.$viewport.width()
+                };
+
+            this.draw(drawConfiguration, features, roiFeatures);
+
+            if (this.canvas) {
+                $$1(this.canvas).remove();
+            }
+            newCanvas._data = drawConfiguration;
+            this.canvas = newCanvas;
+            this.$viewport.append($$1(newCanvas));
+
+        }
+
+        refresh() {
+            if (!(this.canvas && this.featureCache)) return
+
+            const drawConfiguration = this.canvas._data;
+            drawConfiguration.context.clearRect(0, 0, this.canvas.width, this.canvas.height);
+            const {features, roiFeatures} = this.featureCache;
+            this.draw(drawConfiguration, features, roiFeatures);
+        }
+
+        /**
+         * Draw the associated track.
+         *
+         * @param drawConfiguration
+         * @param features
+         * @param roiFeatures
+         */
+        draw(drawConfiguration, features, roiFeatures) {
+
+            if (features) {
+                drawConfiguration.features = features;
+                this.trackView.track.draw(drawConfiguration);
+            }
+            if (roiFeatures && roiFeatures.length > 0) {
+                for (let r of roiFeatures) {
+                    drawConfiguration.features = r.features;
+                    r.track.draw(drawConfiguration);
+                }
+            }
+        }
+
+        containsPosition(chr, position) {
+            if (this.referenceFrame.chr === chr && position >= this.referenceFrame.start) {
+                return position <= this.referenceFrame.calculateEnd(this.getWidth())
+            } else {
+                return false
+            }
+        }
+
+        isLoading() {
+            return this.loading
+        }
+
+        savePNG() {
+
+            if (!this.canvas) return
+
+            const canvasMetadata = this.canvas._data;
+            const canvasTop = canvasMetadata ? canvasMetadata.pixelTop : 0;
+            const devicePixelRatio = window.devicePixelRatio;
+            const w = this.$viewport.width() * devicePixelRatio;
+            const h = this.$viewport.height() * devicePixelRatio;
+            const x = -$$1(this.canvas).position().left * devicePixelRatio;
+            const y = (-this.contentTop - canvasTop) * devicePixelRatio;
+
+            const ctx = this.canvas.getContext("2d");
+            const imageData = ctx.getImageData(x, y, w, h);
+            const exportCanvas = document.createElement('canvas');
+            const exportCtx = exportCanvas.getContext('2d');
+            exportCanvas.width = imageData.width;
+            exportCanvas.height = imageData.height;
+            exportCtx.putImageData(imageData, 0, 0);
+
+            // filename = this.trackView.track.name + ".png";
+            const filename = (this.$trackLabel.text() ? this.$trackLabel.text() : "image") + ".png";
+            const data = exportCanvas.toDataURL("image/png");
+            download(filename, data);
+        }
+
+        saveSVG() {
+
+            const marginTop = 32;
+            const marginLeft = 32;
+
+            let {width, height} = this.browser.columnContainer.getBoundingClientRect();
+
+            const h_render = 8000;
+
+            const config =
+                {
+
+                    width,
+                    height: h_render,
+
+                    backdropColor: 'white',
+
+                    multiLocusGap: 0,
+
+                    viewbox:
+                        {
+                            x: 0,
+                            y: 0,
+                            width,
+                            height: h_render
+                        }
+
+                };
+
+            const context = new ctx(config);
+
+            const delta =
+                {
+                    deltaX: marginLeft,
+                    deltaY: marginTop
+                };
+
+            this.renderViewportToSVG(context, delta);
+
+            // reset height to trim away unneeded svg canvas real estate. Yes, a bit of a hack.
+            context.setHeight(height);
+
+            const str = (this.trackView.track.name || this.trackView.track.id).replace(/\W/g, '');
+            const index = this.browser.referenceFrameList.indexOf(this.referenceFrame);
+
+            const svg = context.getSerializedSvg(true);
+            const data = URL.createObjectURL(new Blob([svg], {type: "application/octet-stream"}));
+
+            const id = `${str}_referenceFrame_${index}_guid_${domUtils.guid()}`;
+            download(`${id}.svg`, data);
+
+        }
+
+        // called by trackView.renderSVGContext() when rendering
+        // entire browser as SVG
+
+        renderViewportToSVG(context, {deltaX, deltaY}) {
+
+            if (this.$zoomInNotice && this.$zoomInNotice.is(":visible")) {
+                return
+            }
+
+            const {width, height} = this.$viewport.get(0).getBoundingClientRect();
+
+            const str = (this.trackView.track.name || this.trackView.track.id).replace(/\W/g, '');
+            const index = this.browser.referenceFrameList.indexOf(this.referenceFrame);
+            const id = `${str}_referenceFrame_${index}_guid_${domUtils.guid()}`;
+            this.drawSVGWithContext(context, width, height, id, deltaX, deltaY + this.contentTop, -this.contentTop);
+
+        }
+
+        renderSVGContext(context, {deltaX, deltaY}) {
+
+            this.renderViewportToSVG(context, {deltaX, deltaY});
+
+            if (this.$zoomInNotice && this.$zoomInNotice.is(":visible")) {
+                return
+            }
+
+            if (this.$trackLabel && true === this.browser.trackLabelsVisible) {
+                const {x, y, width, height} = domUtils.relativeDOMBBox(this.$viewport.get(0), this.$trackLabel.get(0));
+                this.renderTrackLabelSVG(context, deltaX + x, deltaY + y, width, height);
+            }
+
+        }
+
+        // render track label element called from renderSVGContext()
+        renderTrackLabelSVG(context, tx, ty, width, height) {
+
+            const str = (this.trackView.track.name || this.trackView.track.id).replace(/\W/g, '');
+            const id = `${str}_track_label_guid_${domUtils.guid()}`;
+
+            context.saveWithTranslationAndClipRect(id, tx, ty, width, height, 0);
+
+            context.fillStyle = "white";
+            context.fillRect(0, 0, width, height);
+
+            context.font = "12px Arial";
+            context.fillStyle = 'rgb(68, 68, 68)';
+
+            const {width: stringWidth} = context.measureText(this.$trackLabel.text());
+            const dx = 0.25 * (width - stringWidth);
+            const dy = 0.7 * (height - 12);
+            context.fillText(this.$trackLabel.text(), dx, height - dy);
+
+            context.strokeStyle = 'rgb(68, 68, 68)';
+            context.strokeRect(0, 0, width, height);
+
+            context.restore();
+
+        }
+
+        // called by renderSVGContext()
+        drawSVGWithContext(context, width, height, id, x, y, yClipOffset) {
+
+            context.saveWithTranslationAndClipRect(id, x, y, width, height, yClipOffset);
+
+            let {start, bpPerPixel} = this.referenceFrame;
+
+            const config =
+                {
+                    context,
+                    viewport: this,
+                    referenceFrame: this.referenceFrame,
+                    top: yClipOffset,
+                    pixelTop: yClipOffset,
+                    pixelWidth: width,
+                    pixelHeight: height,
+                    bpStart: start,
+                    bpEnd: start + (width * bpPerPixel),
+                    bpPerPixel,
+                    viewportWidth: width,
+                    selection: this.selection
+                };
+
+            const features = this.featureCache ? this.featureCache.features : undefined;
+            const roiFeatures = this.featureCache ? this.featureCache.roiFeatures : undefined;
+            this.draw(config, features, roiFeatures);
+
+            context.restore();
+
+        }
+
+        get cachedFeatures() {
+            return this.featureCache ? this.featureCache.features : []
+        }
+
+        clearCache() {
+            this.featureCache = undefined;
+            if (this.canvas) this.canvas._data = undefined;
+        }
+
+        async getFeatures(track, chr, start, end, bpPerPixel) {
+            if (this.featureCache && this.featureCache.containsRange(chr, start, end, bpPerPixel)) {
+                return this.featureCache.features
+            } else if (typeof track.getFeatures === "function") {
+                const features = await track.getFeatures(chr, start, end, bpPerPixel, this);
+                this.checkContentHeight(features);
+                return features
+            } else {
+                return undefined
+            }
+        }
+
+        needsRepaint() {
+
+            if (!this.canvas) return true
+
+            const data = this.canvas._data;
+            return !data ||
+                this.referenceFrame.start < data.bpStart ||
+                this.referenceFrame.end > data.bpEnd ||
+                this.referenceFrame.chr !== data.referenceFrame.chr ||
+                this.referenceFrame.bpPerPixel != data.bpPerPixel
+        }
+
+        needsReload() {
+            if (!this.featureCache) return true
+            const {chr, bpPerPixel} = this.referenceFrame;
+            const {bpStart, bpEnd} = this.repaintDimensions();
+            return (!this.featureCache.containsRange(chr, bpStart, bpEnd, bpPerPixel))
+        }
+
+        createZoomInNotice($parent) {
+
+            const $container = $$1('<div>', {class: 'igv-zoom-in-notice-container'});
+            $parent.append($container);
+
+            const $e = $$1('<div>');
+            $container.append($e);
+
+            $e.text('Zoom in to see features');
+
+            $container.hide();
+
+            return $container
+        }
+
+        viewIsReady() {
+            return this.browser && this.browser.referenceFrameList && this.referenceFrame
+        }
+
+        addMouseHandlers() {
+
+            const viewport = this.$viewport.get(0);
+
+            this.addViewportContextMenuHandler(viewport);
+
+            // Mouse down
+            const md = (event) => {
+                this.enableClick = true;
+                this.browser.mouseDownOnViewport(event, this);
+                domUtils.pageCoordinates(event);
+            };
+            viewport.addEventListener('mousedown', md);
+            viewport.addEventListener('touchstart', md);
+
+            // Mouse up
+            const mu = (event) => {
+                // Any mouse up cancels drag and scrolling
+                if (this.browser.dragObject || this.browser.isScrolling) {
+                    this.browser.cancelTrackPan();
+                    // event.preventDefault();
+                    // event.stopPropagation();
+                    this.enableClick = false;   // Until next mouse down
+                } else {
+                    this.browser.cancelTrackPan();
+                    this.browser.endTrackDrag();
+                }
+            };
+            viewport.addEventListener('mouseup', mu);
+            viewport.addEventListener('touchend', mu);
+
+            // Mouse move
+            if (typeof this.trackView.track.hoverText === 'function') {
+                viewport.addEventListener('mousemove', (event => {
+                    if (event.buttons === 0 && (Date.now() - lastHoverUpdateTime > 100)) {
+                        lastHoverUpdateTime = Date.now();
+                        const clickState = this.createClickState(event);
+                        if (clickState) {
+                            const tooltip = this.trackView.track.hoverText(clickState);
+                            if (tooltip) {
+                                this.$viewport[0].setAttribute("title", tooltip);
+                            } else {
+                                this.$viewport[0].removeAttribute("title");
+                            }
+                        }
+                    }
+                }));
+            }
+
+            this.addViewportClickHandler(this.$viewport.get(0));
+
+            if (this.trackView.track.name && "sequence" !== this.trackView.track.config.type) {
+                this.addTrackLabelClickHandler(this.$trackLabel.get(0));
+            }
+
+        }
+
+        addViewportContextMenuHandler(viewport) {
+
+            viewport.addEventListener('contextmenu', (event) => {
+
+                // Ignore if we are doing a drag.  This can happen with touch events.
+                if (this.browser.dragObject) {
+                    return false
+                }
+
+                const clickState = this.createClickState(event);
+
+                if (undefined === clickState) {
+                    return false
+                }
+
+                event.preventDefault();
+
+                // Track specific items
+                let menuItems = [];
+                if (typeof this.trackView.track.contextMenuItemList === "function") {
+                    const trackMenuItems = this.trackView.track.contextMenuItemList(clickState);
+                    if (trackMenuItems) {
+                        menuItems = trackMenuItems;
+                    }
+                }
+
+                // Add items common to all tracks
+                if (menuItems.length > 0) {
+                    menuItems.push({label: $$1('<HR>')});
+                }
+
+                menuItems.push({label: 'Save Image (PNG)', click: () => this.savePNG()});
+                menuItems.push({label: 'Save Image (SVG)', click: () => this.saveSVG()});
+
+                this.browser.menuPopup.presentTrackContextMenu(event, menuItems);
+            });
+
+        }
+
+
+        addViewportClickHandler(viewport) {
+
+            viewport.addEventListener('click', (event) => {
+
+                if (this.enableClick && this.canvas) {
+                    if (3 === event.which || event.ctrlKey) {
+                        return
+                    }
+
+                    // Close any currently open popups
+                    $$1('.igv-popover').hide();
+
+
+                    if (this.browser.dragObject || this.browser.isScrolling) {
+                        return
+                    }
+
+                    // Treat as a mouse click, its either a single or double click.
+                    // Handle here and stop propogation / default
+                    event.preventDefault();
+
+                    const mouseX = domUtils.translateMouseCoordinates(event, this.$viewport.get(0)).x;
+                    const mouseXCanvas = domUtils.translateMouseCoordinates(event, this.canvas).x;
+                    const referenceFrame = this.referenceFrame;
+                    const xBP = Math.floor((referenceFrame.start) + referenceFrame.toBP(mouseXCanvas));
+
+                    const time = Date.now();
+
+                    if (time - lastClickTime < this.browser.constants.doubleClickDelay) {
+
+                        // double-click
+                        if (popupTimerID) {
+                            window.clearTimeout(popupTimerID);
+                            popupTimerID = undefined;
+                        }
+
+                        const centerBP = Math.round(referenceFrame.start + referenceFrame.toBP(mouseX));
+
+                        let string;
+
+                        if ('all' === this.referenceFrame.chr.toLowerCase()) {
+
+                            const chr = this.browser.genome.getChromosomeCoordinate(centerBP).chr;
+
+                            if (1 === this.browser.referenceFrameList.length) {
+                                string = chr;
+                            } else {
+                                const loci = this.browser.referenceFrameList.map(({locusSearchString}) => locusSearchString);
+                                const index = this.browser.referenceFrameList.indexOf(this.referenceFrame);
+                                loci[index] = chr;
+                                string = loci.join(' ');
+                            }
+
+                            this.browser.search(string);
+
+                        } else {
+                            this.browser.zoomWithScaleFactor(0.5, centerBP, this.referenceFrame);
+                        }
+
+
+                    } else {
+                        // single-click
+
+                        if (event.shiftKey && typeof this.trackView.track.shiftClick === "function") {
+
+                            this.trackView.track.shiftClick(xBP, event);
+
+                        } else if (typeof this.trackView.track.popupData === "function") {
+
+                            popupTimerID = setTimeout(() => {
+
+                                    const content = this.getPopupContent(event);
+                                    if (content) {
+                                        if (this.popover) this.popover.dispose();
+                                        this.popover = new Popover(this.browser.columnContainer);
+                                        this.popover.presentContentWithEvent(event, content);
+                                    }
+                                    window.clearTimeout(popupTimerID);
+                                    popupTimerID = undefined;
+                                },
+                                this.browser.constants.doubleClickDelay);
+                        }
+                    }
+
+                    lastClickTime = time;
+
+                }
+            });
+        }
+
+        addTrackLabelClickHandler(trackLabel) {
+
+            trackLabel.addEventListener('click', (event) => {
+
+                event.stopPropagation();
+
+                const {track} = this.trackView;
+
+                let str;
+                if (typeof track.description === 'function') {
+                    str = track.description();
+                } else if (track.description) {
+                    str = `<div>${track.description}</div>`;
+                }
+
+                if (str) {
+                    if (this.popover) {
+                        this.popover.dispose();
+                    }
+                    this.popover = new Popover(this.browser.columnContainer, (track.name || ''));
+                    this.popover.presentContentWithEvent(event, str);
+                }
+            });
+        }
+
+        createClickState(event) {
+
+            if (!this.canvas) return  // Can happen during initialization
+
+            const referenceFrame = this.referenceFrame;
+            const viewportCoords = domUtils.translateMouseCoordinates(event, this.$viewport.get(0));
+            const canvasCoords = domUtils.translateMouseCoordinates(event, this.canvas);
+            const genomicLocation = ((referenceFrame.start) + referenceFrame.toBP(viewportCoords.x));
+
+            return {
+                event,
+                viewport: this,
+                referenceFrame,
+                genomicLocation,
+                y: viewportCoords.y - this.contentTop,
+                canvasX: canvasCoords.x,
+                canvasY: canvasCoords.y
+            }
+
+        }
+
+        getPopupContent(event) {
+
+            const clickState = this.createClickState(event);
+
+            if (undefined === clickState) {
+                return
+            }
+
+            let track = this.trackView.track;
+            const dataList = track.popupData(clickState);
+
+            const popupClickHandlerResult = this.browser.fireEvent('trackclick', [track, dataList]);
+
+            let content;
+            if (undefined === popupClickHandlerResult || true === popupClickHandlerResult) {
+                // Indicates handler did not handle the result, or the handler wishes default behavior to occur
+                if (dataList && dataList.length > 0) {
+                    content = formatPopoverText(dataList);
+                }
+
+            } else if (typeof popupClickHandlerResult === 'string') {
+                content = popupClickHandlerResult;
+            }
+
+            return content
+        }
+
+
+    }
+
+
+    function formatPopoverText(nameValues) {
+
+        const rows = nameValues.map(nameValue => {
+
+            if (nameValue.name) {
+                const str = `<span>${nameValue.name}</span>&nbsp&nbsp&nbsp${nameValue.value}`;
+                return `<div title="${nameValue.value}">${str}</div>`
+            } else if ('<hr>' === nameValue) { // this can be retired if nameValue.html is allowed.
+                return nameValue
+            } else if (nameValue.html) {
+                return nameValue.html
+            } else {
+                return `<div title="${nameValue}">${nameValue}</div>`
+            }
+
+        });
+
+        return rows.join('')
+    }
+
+    class FeatureCache {
+
+        constructor(chr, tileStart, tileEnd, bpPerPixel, features, roiFeatures, multiresolution) {
+            this.chr = chr;
+            this.bpStart = tileStart;
+            this.bpEnd = tileEnd;
+            this.bpPerPixel = bpPerPixel;
+            this.features = features;
+            this.roiFeatures = roiFeatures;
+            this.multiresolution = multiresolution;
+        }
+
+        containsRange(chr, start, end, bpPerPixel) {
+
+            // For multi-resolution tracks allow for a 2X change in bpPerPixel
+            const r = this.multiresolution ? this.bpPerPixel / bpPerPixel : 1;
+
+            return start >= this.bpStart && end <= this.bpEnd && chr === this.chr && r > 0.5 && r < 2
+        }
+
+        overlapsRange(chr, start, end) {
+            return this.chr === chr && end >= this.bpStart && start <= this.bpEnd
+        }
+    }
+
+    /**
+     * Decode UCSC "interact" files.  See https://genome.ucsc.edu/goldenpath/help/interact.html
+     *
+     0  string chrom;        "Chromosome (or contig, scaffold, etc.). For interchromosomal, use 2 records"
+     1  uint chromStart;     "Start position of lower region. For interchromosomal, set to chromStart of this region"
+     2  uint chromEnd;       "End position of upper region. For interchromosomal, set to chromEnd of this region"
+     3  string name;         "Name of item, for display.  Usually 'sourceName/targetName/exp' or empty"
+     4  uint score;          "Score (0-1000)"
+     5  double value;        "Strength of interaction or other data value. Typically basis for score"
+     6  string exp;          "Experiment name (metadata for filtering). Use . if not applicable"
+     7  string color;        "Item color.  Specified as r,g,b or hexadecimal #RRGGBB or html color name, as in //www.w3.org/TR/css3-color/#html4. Use 0 and spectrum setting to shade by score"
+     8  string sourceChrom;  "Chromosome of source region (directional) or lower region. For non-directional interchromosomal, chrom of this region."
+     9  uint sourceStart;    "Start position in chromosome of source/lower/this region"
+     10 uint sourceEnd;      "End position in chromosome of source/lower/this region"
+     11 string sourceName;   "Identifier of source/lower/this region"
+     12 string sourceStrand; "Orientation of source/lower/this region: + or -.  Use . if not applicable"
+     13 string targetChrom;  "Chromosome of target region (directional) or upper region. For non-directional interchromosomal, chrom of other region"
+     14 uint targetStart;    "Start position in chromosome of target/upper/this region"
+     15 uint targetEnd;      "End position in chromosome of target/upper/this region"
+     16 string targetName;   "Identifier of target/upper/this region"
+     17 string targetStrand; "Orientation of target/upper/this region: + or -.  Use . if not applicable"
+     *
+     * @param tokens
+     * @param ignore
+     * @returns {*}
+     */
+    function decodeInteract(tokens, header) {
+
+        if (tokens.length < 6) {
+            console.log("Skipping line: " + tokens.join(' '));
+            return undefined
+        }
+
+        var feature = {
+            chr: tokens[0],
+            start: tokens[1],
+            end: tokens[2],
+
+            chr1: tokens[8],
+            start1: Number.parseInt(tokens[9]),
+            end1: Number.parseInt(tokens[10]),
+
+            chr2: tokens[13],
+            start2: Number.parseInt(tokens[14]),
+            end2: Number.parseInt(tokens[15]),
+
+            name: tokens[3],
+            score: Number(tokens[4]),
+            value: Number(tokens[5]),
+            color: tokens[7] === '.' ? undefined : tokens[7] === "0" ? "rgb(0,0,0)" : tokens[7],
+
+        };
+
+        return feature
+    }
+
+    /**
+     * Some interpretations of the sequence ontology needed to assemble GFF transcripts.
+     *
+     */
+
+    const transcriptTypes = new Set(['transcript', 'primary_transcript', 'processed_transcript', 'mRNA', 'mrna',
+        'lnc_RNA', 'miRNA', 'ncRNA', 'rRNA', 'scRNA', 'snRNA', 'snoRNA', 'tRNA']);
+    const cdsTypes = new Set(['CDS', 'cds']);
+    const codonTypes = new Set(['start_codon', 'stop_codon']);
+    const utrTypes = new Set(['5UTR', '3UTR', 'UTR', 'five_prime_UTR', 'three_prime_UTR', "3'-UTR", "5'-UTR"]);
+    const exonTypes = new Set(['exon', 'coding-exon']);
+
+    const transcriptPartTypes = new Set();
+    for (let cltn of [cdsTypes, codonTypes, utrTypes, exonTypes]) {
+        for (let t of cltn) {
+            transcriptPartTypes.add(t);
+        }
+    }
+
+    function isExon(type) {
+        return exonTypes.has(type)
+    }
+
+    function isIntron(type) {
+        return type.includes("intron")
+    }
+
+    function isCoding(type) {
+        return cdsTypes.has(type) || codonTypes.has(type)
+    }
+
+    function isUTR(type) {
+        return utrTypes.has(type)
+    }
+
+    function isTranscript(type) {
+        return transcriptTypes.has(type) || type.endsWith("RNA") || type.endsWith("transcript")
+    }
+
+    function isTranscriptPart(type) {
+        return transcriptPartTypes.has(type) || type.endsWith("RNA") || isIntron(type)
+    }
+
+    const filterPopupProperties = new Set(["id", "parent", "name"]);
+
+    class GFFFeature {
+
+        constructor(properties) {
+            Object.assign(this, properties);
+        }
+
+        popupData(genomicLocation) {
+
+            const pd = this.geneObject ? this.geneObject.popupData() : [];
+
+            if (this.geneObject) {
+                pd.push('<hr/>');
+            }
+
+            if (this.name) {
+                pd.push({name: 'Name', value: this.name});
+            }
+
+            pd.push({name: 'Type', value: this.type});
+            pd.push({name: 'Source', value: this.source});
+            if (this.score !== undefined) {
+                pd.push({name: 'Score', value: this.score});
+            }
+
+            if (this.attributeString) {
+                const atts = parseAttributeString(this.attributeString, this.delim);
+                for (let [key, value] of atts) {
+                    if (value !== undefined && value.length > 0 && !filterPopupProperties.has(key.toLowerCase())) {
+                        pd.push({name: key + ":", value: value});
+                    }
+                }
+            }
+            pd.push({
+                name: 'Location',
+                value: `${this.chr}:${numberFormatter$1(this.start + 1)}-${numberFormatter$1(this.end)}`
+            });
+            return pd
+        }
+
+        getAttributeValue(attributeName) {
+            if (this.hasOwnProperty(attributeName)) {
+                return this[attributeName]
+            } else {
+                // TODO -- fetch from attribute string and cache
+                if (!this._attributeCache) {
+                    this._attributeCache = new Map();
+                }
+                if (this._attributeCache.has(attributeName)) {
+                    return this._attributeCache.get(attributeName)
+                } else {
+                    const atts = parseAttributeString(this.attributeString, this.delim);
+                    let v;
+                    for (let [key, value] of atts) {
+                        if (key === attributeName) {
+                            v = value;
+                            break
+                        }
+                    }
+                    this._attributeCache.set(attributeName, v);
+                    return v
+                }
+            }
+        }
+    }
+
+    class GFFTranscript extends GFFFeature {
+
+        constructor(feature) {
+            super(feature);
+            this.exons = [];
+            this.parts = [];
+        }
+
+        addExon(feature) {
+
+            this.exons.push(feature);
+
+            // Expand feature --  for transcripts not explicitly represented in the file (gtf)
+            this.start = Math.min(this.start, feature.start);
+            this.end = Math.max(this.end, feature.end);
+        }
+
+        addPart(feature) {
+            this.parts.push(feature);
+        }
+
+        assembleParts() {
+
+            if (this.parts.length === 0) return
+
+            this.parts.sort(function (a, b) {
+                return a.start - b.start
+            });
+
+            // Create exons, if neccessary
+            let lastStart = this.parts[0].start;
+            let lastEnd = this.parts[0].end;
+            for (let i = 1; i < this.parts.length; i++) {
+                const part = this.parts[i];
+                if (isIntron(part.type)) {
+                    continue
+                }
+                if (part.start <= lastEnd) {
+                    lastEnd = Math.max(lastEnd, part.end);
+                } else {
+                    let exon = this.findExonContaining({start: lastStart, end: lastEnd});
+                    if (!exon) {
+                        this.exons.push({start: lastStart, end: lastEnd, psuedo: true});
+                    }
+                    lastStart = part.start;
+                    lastEnd = part.end;
+                }
+            }
+            let exon = this.findExonContaining({start: lastStart, end: lastEnd});
+            if (!exon) {
+                this.exons.push({start: lastStart, end: lastEnd, psuedo: true});
+                this.start = Math.min(this.start, lastStart);
+                this.end = Math.max(this.end, lastEnd);
+            }
+
+
+            for (let part of this.parts) {
+                const type = part.type;
+                if (isCoding(type)) {
+                    this.addCDS(part);
+                } else if (isUTR(type)) {
+                    this.addUTR(part);
+                }
+            }
+        }
+
+        findExonContaining({start, end}) {
+            for (let exon of this.exons) {
+                if (exon.end >= end && exon.start <= start) {
+                    return exon
+                }
+            }
+            return undefined
+        }
+
+        addCDS(cds) {
+
+            let exon;
+            const exons = this.exons;
+
+            for (let e of exons) {
+                if (e.start <= cds.start && e.end >= cds.end) {
+                    exon = e;
+                    break
+                }
+            }
+
+            if (exon) {
+                exon.cdStart = exon.cdStart ? Math.min(cds.start, exon.cdStart) : cds.start;
+                exon.cdEnd = exon.cdEnd ? Math.max(cds.end, exon.cdEnd) : cds.end;
+            } else {
+                // cds.cdStart = cds.start
+                // cds.cdEnd = cds.end
+                // exons.push(cds)
+                console.error("No exon found spanning " + cds.start + "-" + cds.end);
+            }
+
+            // Expand feature --  for transcripts not explicitly represented in the file (gtf files)
+            // this.start = Math.min(this.start, cds.start);
+            // this.end = Math.max(this.end, cds.end);
+
+            this.cdStart = this.cdStart ? Math.min(cds.start, this.cdStart) : cds.start;
+            this.cdEnd = this.cdEnd ? Math.max(cds.end, this.cdEnd) : cds.end;
+        }
+
+        addUTR(utr) {
+
+            let exon;
+            const exons = this.exons;
+
+            // Find exon containing CDS
+            for (let i = 0; i < exons.length; i++) {
+                if (exons[i].start <= utr.start && exons[i].end >= utr.end) {
+                    exon = exons[i];
+                    break
+                }
+            }
+
+            if (exon) {
+                if (utr.start === exon.start && utr.end === exon.end) {
+                    exon.utr = true;
+                } else {
+                    if (utr.end < exon.end) {
+                        exon.cdStart = utr.end;
+                    }
+                    if (utr.start > exon.start) {
+                        exon.cdEnd = utr.start;
+                    }
+                }
+
+            } else {
+                // utr.utr = true
+                // exons.push(utr)
+                console.error("No exon found spanning " + cds.start + "-" + cds.end);
+            }
+
+            // Expand feature --  for transcripts not explicitly represented in the file
+            // this.start = Math.min(this.start, utr.start);
+            // this.end = Math.max(this.end, utr.end);
+
+        }
+
+        finish() {
+
+            this.assembleParts();
+
+            var cdStart = this.cdStart;
+            var cdEnd = this.cdEnd;
+
+            this.exons.sort(function (a, b) {
+                return a.start - b.start
+            });
+
+            // Search for UTR exons that were not explicitly tagged
+            if (cdStart) {
+                this.exons.forEach(function (exon) {
+                    if (exon.end < cdStart || exon.start > cdEnd) exon.utr = true;
+                });
+            }
+        }
+
+        popupData(genomicLocation) {
+
+            const pd = super.popupData(genomicLocation);
+
+            // If clicked over an exon add its attributes
+            for (let exon of this.exons) {
+                if (exon.pseudo) continue  // An implicit exon
+                if (genomicLocation >= exon.start && genomicLocation < exon.end && typeof exon.popupData === 'function') {
+                    pd.push('<hr/>');
+                    const exonData = exon.popupData(genomicLocation);
+                    for (let att of exonData) {
+                        pd.push(att);
+                    }
+                }
+            }
+
+            for (let part of this.parts) {
+                if (genomicLocation >= part.start && genomicLocation < part.end && typeof part.popupData === 'function') {
+                    pd.push('<hr/>');
+                    const partData = part.popupData(genomicLocation);
+                    for (let att of partData) {
+                        pd.push(att);
+                    }
+                }
+            }
+
+
+            return pd
+        }
+    }
+
+    function decode(tokens, header) {
+
+        const format = header.format;
+        if (tokens.length < 9) {
+            return undefined      // Not a valid gff record
+        }
+
+        const delim = ('gff3' === format) ? '=' : ' ';
+        return new GFFFeature({
+            source: decodeGFFAttribute(tokens[1]),
+            type: tokens[2],
+            chr: tokens[0],
+            start: parseInt(tokens[3]) - 1,
+            end: parseInt(tokens[4]),
+            score: "." === tokens[5] ? undefined : Number(tokens[5]),
+            strand: tokens[6],
+            phase: "." === tokens[7] ? 0 : parseInt(tokens[7]),
+            attributeString: tokens[8],
+            delim: delim
+        })
+    }
+
+
+    /**
+     * Decode a single gff record (1 line in file).  Aggregations such as gene models are constructed at a higher level.
+     *      ctg123 . mRNA            1050  9000  .  +  .  ID=mRNA00001;Parent=gene00001
+     * @param tokens
+     * @param ignore
+     * @returns {*}
+     */
+    function decodeGFF3(tokens, header) {
+
+        const feature = decode(tokens, header);
+
+        if (!feature) {
+            return
+        }
+
+        const attributes = parseAttributeString(feature.attributeString, feature.delim);
+
+        // Search for color value as case insenstivie key
+        for (let [key, value] of attributes) {
+            const keyLower = key.toLowerCase();
+            if ("color" === keyLower || "colour" === keyLower) {
+                feature.color = IGVColor.createColorString(value);
+            } else if (key === "ID") {
+                feature.id = value;
+            } else if (key === "Parent") {
+                feature.parent = value;
+            }
+        }
+        return feature
+    }
+
+    /**
+     * GTF format example:
+     NC_000008.11    BestRefSeq    gene    127735434    127742951    .    +    .    gene_id "MYC"; transcript_id ""; db_xref "GeneID:4609"; db_xref "HGNC:HGNC:7553"; db_xref "MIM:190080"; description "MYC proto-oncogene, bHLH transcription factor"; gbkey "Gene"; gene "MYC"; gene_biotype "protein_coding"; gene_synonym "bHLHe39"; gene_synonym "c-Myc"; gene_synonym "MRTL"; gene_synonym "MYCC";
+     NC_000008.11    BestRefSeq    transcript    127735434    127742951    .    +    .    gene_id "MYC"; transcript_id "NM_001354870.1"; db_xref "GeneID:4609"; gbkey "mRNA"; gene "MYC"; product "MYC proto-oncogene, bHLH transcription factor, transcript variant 2"; transcript_biotype "mRNA";
+     NC_000008.11    BestRefSeq    exon    127735434    127736623    .    +    .    gene_id "MYC"; transcript_id "NM_001354870.1"; db_xref "GeneID:4609"; gene "MYC"; product "MYC proto-oncogene, bHLH transcription factor, transcript variant 2"; transcript_biotype "mRNA"; exon_number "1";
+     *
+     * @param tokens
+     * @param ignore
+     * @returns {*}
+     */
+    function decodeGTF(tokens, header) {
+
+        const feature = decode(tokens, header);
+
+        if (!feature) {
+            return
+        }
+
+        const attributes = parseAttributeString(feature.attributeString, feature.delim);
+
+        // GTF files specify neither ID nor parent fields, but they can be inferred from common conventions
+        let idField;
+        let parentField;
+        switch (feature.type) {
+            case "gene":
+                idField = "gene_id";
+                break
+            case "transcript":
+                idField = "transcript_id";
+                parentField = "gene_id";
+                break
+            default:
+                parentField = "transcript_id";
+        }
+
+        for (let [key, value] of attributes) {
+            const keyLower = key.toLowerCase();
+            if ("color" === keyLower || "colour" === keyLower) {
+                feature.color = IGVColor.createColorString(value);
+            } else if (key === idField) {
+                feature.id = value;
+            } else if (key === parentField) {
+                feature.parent = value;
+            }
+        }
+        return feature
+
+    }
+
+
+    /**
+     * Parse the attribute string, returning an array of key-value pairs.  An array is used rather than a map as attribute
+     * keys are not required to be unique.
+     *
+     * @param attributeString
+     * @param keyValueDelim
+     * @returns {[]}
+     */
+    function parseAttributeString(attributeString, keyValueDelim, relaxed = false) {
+        // parse 'attributes' string (see column 9 docs in https://github.com/The-Sequence-Ontology/Specifications/blob/master/gff3.md)
+        var attributes = [];
+        for (let kv of attributeString.split(';')) {
+            kv = kv.trim();
+            const idx = kv.indexOf(keyValueDelim);
+            if (idx > 0 && idx < kv.length - 1) {
+                const key = stripQuotes(decodeGFFAttribute(kv.substring(0, idx).trim(), relaxed));
+                let value = stripQuotes(decodeGFFAttribute(kv.substring(idx + 1).trim(), relaxed));
+                attributes.push([key, value]);
+            }
+        }
+        return attributes
+    }
+
+    function stripQuotes(value) {
+        if (value.startsWith('"') && value.endsWith('"')) {
+            value = value.substr(1, value.length - 2);
+        }
+        return value
+    }
+
+    // GFF3 attributes have specific percent encoding rules, the list below are required, all others are forbidden
+    /*
+    tab (%09)
+    newline (%0A)
+    carriage return (%0D)
+    % percent (%25)
+    control characters (%00 through %1F, %7F)
+    In addition, the following characters have reserved meanings in column 9 and must be escaped when used in other contexts:
+    ; semicolon (%3B)
+    = equals (%3D)
+    & ampersand (%26)
+    , comma (%2C)
+     */
+
+    const encodings = new Map([
+        ["%09", "\t"],
+        ["%0A", "\n"],
+        ["%0D", "\r"],
+        ["%25", "%"],
+        ["%3B", ";"],
+        ["%3D", "="],
+        ["%26", "&"],
+        ["%2C", ","]
+    ]);
+
+    function decodeGFFAttribute(str, relaxed = false) {
+
+        if (!str.includes("%")) {
+            return str
+        }
+        if (relaxed) {
+            return decodeURIComponent(str);
+        }
+        let decoded = "";
+        for (let i = 0; i < str.length; i++) {
+
+            if (str.charCodeAt(i) === 37 && i < str.length - 2) {
+                const key = str.substring(i, i + 3);
+                if (encodings.has(key)) {
+                    decoded += encodings.get(key);
+                } else {
+                    decoded += key;
+                }
+                i += 2;
+            } else {
+                decoded += str.charAt(i);
+            }
+        }
+        return decoded
+
+    }
+
+    /**
+     * Wrapper class to record a decoding error.
+     */
+
+    class DecodeError {
+        constructor(message) {
+            this.message = message;
+        }
+    }
+
+    /**
+     * Decode the UCSC bed format.  Only the first 3 columns (chr, start, end) are required.   The remaining columns
+     * must follow standard bed order, but we will tolerate deviations after column 3.
+     *
+     * @param tokens
+     * @param ignore
+     * @returns decoded feature, or null if this is not a valid record
+     */
+    function decodeBed(tokens, header) {
+
+
+        if (tokens.length < 3) return undefined
+
+        header && header.gffTags;
+
+        const chr = tokens[0];
+        const start = parseInt(tokens[1]);
+        const end = tokens.length > 2 ? parseInt(tokens[2]) : start + 1;
+        if (isNaN(start) || isNaN(end)) {
+            return new DecodeError(`Unparsable bed record.`)
+        }
+        const feature = new UCSCBedFeature({chr: chr, start: start, end: end, score: 1000});
+
+        try {
+            if (tokens.length > 3) {
+
+                // Potentially parse name field as GFF column 9 style streng.
+                if (tokens[3].indexOf(';') > 0 && tokens[3].indexOf('=') > 0) {
+                    const attributeKVs = parseAttributeString(tokens[3], '=', true);
+                    feature.attributes = {};
+                    for (let kv of attributeKVs) {
+                        feature.attributes[kv[0]] = kv[1];
+                        if (header.nameField != undefined && kv[0] === header.nameField) {
+                            feature.name = kv[1];
+                        }
+                    }
+                }
+                if (!feature.name) {
+                    feature.name = tokens[3] === '.' ? '' : tokens[3];
+                }
+            }
+
+            if (tokens.length > 4) {
+                feature.score = tokens[4] === '.' ? 0 : Number(tokens[4]);
+                if (isNaN(feature.score)) {
+                    return feature
+                }
+            }
+
+            if (tokens.length > 5) {
+                feature.strand = tokens[5];
+                if (!(feature.strand === '.' || feature.strand === '+' || feature.strand === '-')) {
+                    return feature
+                }
+            }
+
+            if (tokens.length > 6) {
+                feature.cdStart = parseInt(tokens[6]);
+                if (isNaN(feature.cdStart)) {
+                    return feature
+                }
+            }
+
+            if (tokens.length > 7) {
+                feature.cdEnd = parseInt(tokens[7]);
+                if (isNaN(feature.cdEnd)) {
+                    return feature
+                }
+            }
+
+            if (tokens.length > 8) {
+                if (tokens[8] !== "." && tokens[8] !== "0")
+                    feature.color = IGVColor.createColorString(tokens[8]);
+            }
+
+            if (tokens.length > 11) {
+                const exonCount = parseInt(tokens[9]);
+                // Some basic validation
+                if (exonCount > 1000) {
+                    // unlikely
+                    return feature
+                }
+
+                const exonSizes = tokens[10].replace(/,$/, '').split(',');
+                const exonStarts = tokens[11].replace(/,$/, '').split(',');
+                if (!(exonSizes.length === exonStarts.length && exonCount === exonSizes.length)) {
+                    return feature
+                }
+
+                const exons = [];
+                for (let i = 0; i < exonCount; i++) {
+                    const eStart = start + parseInt(exonStarts[i]);
+                    const eEnd = eStart + parseInt(exonSizes[i]);
+                    exons.push({start: eStart, end: eEnd});
+                }
+                if (exons.length > 0) {
+                    findUTRs$1(exons, feature.cdStart, feature.cdEnd);
+                    feature.exons = exons;
+                }
+            }
+
+            // Optional extra columns
+            if (header) {
+                let thicknessColumn = header.thicknessColumn;
+                let colorColumn = header.colorColumn;
+                if (colorColumn && colorColumn < tokens.length) {
+                    feature.color = IGVColor.createColorString(tokens[colorColumn]);
+                }
+                if (thicknessColumn && thicknessColumn < tokens.length) {
+                    feature.thickness = tokens[thicknessColumn];
+                }
+            }
+        } catch
+            (e) {
+
+        }
+
+        return feature
+    }
+
+    /**
+     * Decode a UCSC repeat masker record.
+     */
+    function decodeRepeatMasker(tokens, header) {
+
+        /**
+         * Columns, from UCSC documentation
+         *
+         * 0  bin    585    smallint(5) unsigned    Indexing field to speed chromosome range queries.
+         * 1  swScore    1504    int(10) unsigned    Smith Waterman alignment score
+         * 2  milliDiv    13    int(10) unsigned    Base mismatches in parts per thousand
+         * 3  milliDel    4    int(10) unsigned    Bases deleted in parts per thousand
+         * 4  milliIns    13    int(10) unsigned    Bases inserted in parts per thousand
+         * 5  genoName    chr1    varchar(255)    Genomic sequence name
+         * 6  genoStart    10000    int(10) unsigned    Start in genomic sequence
+         * 7  genoEnd    10468    int(10) unsigned    End in genomic sequence
+         * 8  genoLeft    -249240153    int(11)    -#bases after match in genomic sequence
+         * 9  strand    +    char(1)    Relative orientation + or -
+         * 10 repName    (CCCTAA)n    varchar(255)    Name of repeat
+         * 11 repClass    Simple_repeat    varchar(255)    Class of repeat
+         * 12 repFamily    Simple_repeat    varchar(255)    Family of repeat
+         * 13 repStart    1    int(11)    Start (if strand is +) or -#bases after match (if strand is -) in repeat sequence
+         * 14 repEnd    463    int(11)    End in repeat sequence
+         * 15 repLeft    0    int(11)    -#bases after match (if strand is +) or start (if strand is -) in repeat sequence
+         * 16 id    1    char(1)    First digit of id field in RepeatMasker .out file. Best ignored.
+         */
+        if (tokens.length <= 15) return undefined
+
+        const feature = {
+            swScore: Number.parseInt(tokens[1]),
+            milliDiv: Number.parseInt(tokens[2]),
+            milliDel: Number.parseInt(tokens[3]),
+            milliIns: Number.parseInt(tokens[4]),
+            chr: tokens[5],
+            start: Number.parseInt(tokens[6]),
+            end: Number.parseInt(tokens[7]),
+            //genoLeft: tokens[8],
+            strand: tokens[9],
+            repName: tokens[10],
+            repClass: tokens[11],
+            repFamily: tokens[12],
+            repStart: Number.parseInt(tokens[13]),
+            repEnd: Number.parseInt(tokens[14]),
+            repLeft: Number.parseInt(tokens[15])
+        };
+
+        return feature
+
+    }
+
+    /**
+     * Decode a UCSC "genePred" record.
+     *
+     * @param tokens
+     * @param ignore
+     * @returns {*}
+     */
+    function decodeGenePred(tokens, header) {
+
+        var shift = header.shift === undefined ? 0 : 1;
+
+        if (tokens.length <= 9 + shift) return undefined
+
+        const cdStart = parseInt(tokens[5 + shift]);
+        const cdEnd = parseInt(tokens[6 + shift]);
+        var feature = {
+            name: tokens[0 + shift],
+            chr: tokens[1 + shift],
+            strand: tokens[2 + shift],
+            start: parseInt(tokens[3 + shift]),
+            end: parseInt(tokens[4 + shift]),
+            cdStart: cdStart,
+            cdEnd: cdEnd,
+            id: tokens[0 + shift]
+        };
+        const exons = decodeExons(parseInt(tokens[7 + shift]), tokens[8 + shift], tokens[9 + shift]);
+        findUTRs$1(exons, cdStart, cdEnd);
+
+        feature.exons = exons;
+
+        return feature
+
+    }
+
+    /**
+     * Decode a UCSC "genePredExt" record.  refGene files are in this format.
+     *
+     * @param tokens
+     * @param ignore
+     * @returns {*}
+     */
+    function decodeGenePredExt(tokens, header) {
+
+        var shift = header.shift === undefined ? 0 : 1;
+
+        if (tokens.length <= 11 + shift) return undefined
+
+        const cdStart = parseInt(tokens[5 + shift]);
+        const cdEnd = parseInt(tokens[6 + shift]);
+        const feature = {
+            name: tokens[11 + shift],
+            chr: tokens[1 + shift],
+            strand: tokens[2 + shift],
+            start: parseInt(tokens[3 + shift]),
+            end: parseInt(tokens[4 + shift]),
+            cdStart: cdStart,
+            cdEnd: cdEnd,
+            id: tokens[0 + shift]
+        };
+
+        const exons = decodeExons(parseInt(tokens[7 + shift]), tokens[8 + shift], tokens[9 + shift]);
+        findUTRs$1(exons, cdStart, cdEnd);
+
+        feature.exons = exons;
+
+        return feature
+    }
+
+    /**
+     * Decode a UCSC "refFlat" record
+     * @param tokens
+     * @param ignore
+     * @returns {*}
+     */
+    function decodeReflat(tokens, header) {
+
+        var shift = header.shift === undefined ? 0 : 1;
+
+        if (tokens.length <= 10 + shift) return undefined
+
+        const cdStart = parseInt(tokens[6 + shift]);
+        const cdEnd = parseInt(tokens[7 + shift]);
+        var feature = {
+            name: tokens[0 + shift],
+            id: tokens[1 + shift],
+            chr: tokens[2 + shift],
+            strand: tokens[3 + shift],
+            start: parseInt(tokens[4 + shift]),
+            end: parseInt(tokens[5 + shift]),
+            cdStart: cdStart,
+            cdEnd: cdEnd
+        };
+
+        const exons = decodeExons(parseInt(tokens[8 + shift]), tokens[9 + shift], tokens[10 + shift]);
+        findUTRs$1(exons, cdStart, cdEnd);
+        feature.exons = exons;
+
+        return feature
+    }
+
+    /**
+     * Decode a UCS PSL record *
+     * @param tokens
+     * @param header
+     * @returns {DecodeError|UCSCBedFeature|undefined}
+     */
+    function decodePSL(tokens, header) {
+
+        /*
+        * 0 matches - Number of bases that match that aren't repeats
+        * 1 misMatches - Number of bases that don't match
+        * 2 repMatches - Number of bases that match but are part of repeats
+        * 3 nCount - Number of "N" bases
+        * 4 qNumInsert - Number of inserts in query
+        * 5 qBaseInsert - Number of bases inserted in query
+        * 6 tNumInsert - Number of inserts in target
+        * 7 tBaseInsert - Number of bases inserted in target
+        * 8 strand - "+" or "-" for query strand. For translated alignments, second "+"or "-" is for target genomic strand.
+        * 9 qName - Query sequence name
+        * 10 qSize - Query sequence size.
+        * 11 qStart - Alignment start position in query
+        * 12 qEnd - Alignment end position in query
+        * 13 tName - Target sequence name
+        * 14 tSize - Target sequence size
+        * 15 tStart - Alignment start position in target
+        * 16 tEnd - Alignment end position in target
+        * 17 blockCount - Number of blocks in the alignment (a block contains no gaps)
+        * 18 blockSizes - Comma-separated list of sizes of each block. If the query is a protein and the target the genome, blockSizes are in amino acids. See below for more information on protein query PSLs.
+        * 19 qStarts - Comma-separated list of starting positions of each block in query
+        * 20 tStarts - Comma-separated list of starting positions of each block in target
+         */
+
+
+        if (tokens.length < 21) return undefined
+
+        const chr = tokens[13];
+        const start = parseInt(tokens[15]);
+        const end = parseInt(tokens[16]);
+        const strand = tokens[8].charAt(0);
+        const exonCount = parseInt(tokens[17]);
+        const exons = [];
+        const exonStarts = tokens[20].replace(/,$/, '').split(',');
+        const exonSizes = tokens[18].replace(/,$/, '').split(',');
+
+        for (let i = 0; i < exonCount; i++) {
+            const start = parseInt(exonStarts[i]);
+            const end = start + parseInt(exonSizes[i]);
+            exons.push({start: start, end: end});
+        }
+
+        return new PSLFeature({chr, start, end, strand, exons, tokens})
+    }
+
+
+    function decodeExons(exonCountToken, exonStartsToken, exonEndsToken) {
+
+        const exonCount = parseInt(exonCountToken);
+        const exonStarts = exonStartsToken.replace(/,$/, '').split(',');
+        const exonEnds = exonEndsToken.replace(/,$/, '').split(',');
+        const exons = [];
+        for (let i = 0; i < exonCount; i++) {
+            const start = parseInt(exonStarts[i]);
+            const end = parseInt(exonEnds[i]);
+            exons.push({start: start, end: end});
+        }
+        return exons
+
+    }
+
+    function findUTRs$1(exons, cdStart, cdEnd) {
+
+        for (let exon of exons) {
+            const end = exon.end;
+            const start = exon.start;
+            if (end < cdStart || start > cdEnd) {
+                exon.utr = true;
+            } else {
+                if (cdStart >= start && cdStart <= end) {
+                    exon.cdStart = cdStart;
+                }
+                if (cdEnd >= start && cdEnd <= end) {
+                    exon.cdEnd = cdEnd;
+                }
+            }
+        }
+
+    }
+
+    function decodePeak(tokens, header) {
+
+        var tokenCount, chr, start, end, strand, name, score, qValue, signal, pValue;
+
+        tokenCount = tokens.length;
+        if (tokenCount < 9) {
+            return undefined
+        }
+
+        chr = tokens[0];
+        start = parseInt(tokens[1]);
+        end = parseInt(tokens[2]);
+        name = tokens[3];
+        score = Number(tokens[4]);
+        strand = tokens[5].trim();
+        signal = Number(tokens[6]);
+        pValue = Number(tokens[7]);
+        qValue = Number(tokens[8]);
+
+        if (score === 0) score = signal;
+
+        return {
+            chr: chr, start: start, end: end, name: name, score: score, strand: strand, signal: signal,
+            pValue: pValue, qValue: qValue
+        }
+    }
+
+    function decodeBedGraph(tokens, header) {
+
+        var chr, start, end, value;
+
+        if (tokens.length <= 3) return undefined
+
+        chr = tokens[0];
+        start = parseInt(tokens[1]);
+        end = parseInt(tokens[2]);
+        value = Number(tokens[3]);
+        const feature = {chr: chr, start: start, end: end, value: value};
+
+        // Optional extra columns
+        if (header) {
+            let colorColumn = header.colorColumn;
+            if (colorColumn && colorColumn < tokens.length) {
+                feature.color = IGVColor.createColorString(tokens[colorColumn]);
+            }
+        }
+
+        return feature
+    }
+
+    function decodeWig(tokens, header) {
+
+        const wig = header.wig;
+
+        if (wig && wig.format === "fixedStep") {
+            const ss = (wig.index * wig.step) + wig.start;
+            const ee = ss + wig.span;
+            const value = Number(tokens[0]);
+            ++(wig.index);
+            return isNaN(value) ? null : {chr: wig.chrom, start: ss, end: ee, value: value}
+        } else if (wig && wig.format === "variableStep") {
+
+            if (tokens.length < 2) return null
+            const ss = parseInt(tokens[0], 10) - 1;
+            const ee = ss + wig.span;
+            const value = Number(tokens[1]);
+            return isNaN(value) ? null : {chr: wig.chrom, start: ss, end: ee, value: value}
+
+        } else {
+            return decodeBedGraph(tokens)
+        }
+    }
+
+    function decodeSNP(tokens, header) {
+
+        if (tokens.length < 6) return undefined
+
+        const autoSql = [
+            'bin',
+            'chr',
+            'start',
+            'end',
+            'name',
+            'score',
+            'strand',
+            'refNCBI',
+            'refUCSC',
+            'observed',
+            'molType',
+            'class',
+            'valid',
+            'avHet',
+            'avHetSE',
+            'func',
+            'locType',
+            'weight',
+            'exceptions',
+            'submitterCount',
+            'submitters',
+            'alleleFreqCount',
+            'alleles',
+            'alleleNs',
+            'alleleFreqs',
+            'bitfields'
+        ];
+
+
+        const feature = {
+            chr: tokens[1],
+            start: Number.parseInt(tokens[2]),
+            end: Number.parseInt(tokens[3]),
+            name: tokens[4],
+            score: Number.parseInt(tokens[5])
+        };
+
+        const n = Math.min(tokens.length, autoSql.length);
+        for (let i = 6; i < n; i++) {
+            feature[autoSql[i]] = tokens[i];
+        }
+        return feature
+
+    }
+
+    class UCSCBedFeature {
+
+        constructor(properties) {
+            Object.assign(this, properties);
+        }
+
+        getAttributeValue(attributeName) {
+            if (this.hasOwnProperty(attributeName)) {
+                return this[attributeName]
+            } else if (this.attributes) {
+                return this.attributes[attributeName]
+            }
+        }
+    }
+
+    /*
+    * 0 matches - Number of bases that match that aren't repeats
+    * 1 misMatches - Number of bases that don't match
+    * 2 repMatches - Number of bases that match but are part of repeats
+    * 3 nCount - Number of "N" bases
+    * 4 qNumInsert - Number of inserts in query
+    * 5 qBaseInsert - Number of bases inserted in query
+    * 6 tNumInsert - Number of inserts in target
+    * 7 tBaseInsert - Number of bases inserted in target
+    * 8 strand - "+" or "-" for query strand. For translated alignments, second "+"or "-" is for target genomic strand.
+    * 9 qName - Query sequence name
+    * 10 qSize - Query sequence size.
+    * 11 qStart - Alignment start position in query
+    * 12 qEnd - Alignment end position in query
+    * 13 tName - Target sequence name
+    * 14 tSize - Target sequence size
+    * 15 tStart - Alignment start position in target
+    * 16 tEnd - Alignment end position in target
+    * 17 blockCount - Number of blocks in the alignment (a block contains no gaps)
+    * 18 blockSizes - Comma-separated list of sizes of each block. If the query is a protein and the target the genome, blockSizes are in amino acids. See below for more information on protein query PSLs.
+    * 19 qStarts - Comma-separated list of starting positions of each block in query
+    * 20 tStarts - Comma-separated list of starting positions of each block in target
+     */
+
+    class PSLFeature {
+
+
+        constructor(properties) {
+            Object.assign(this, properties);
+        }
+
+        get score() {
+            const tokens = this.tokens;
+            const match = parseInt(tokens[0]);
+            const repMatch = parseInt(tokens[2]);
+            const misMatch = parseInt(tokens[1]);
+            const qGapCount = parseInt(tokens[4]);
+            const tGapCount = parseInt(tokens[6]);
+            const qSize = parseInt(tokens[10]);
+            return Math.floor((1000 * (match + repMatch - misMatch - qGapCount - tGapCount)) / qSize)
+        }
+
+        get matches() {
+            return this.tokens[0]
+        }
+
+        get misMatches() {
+            return this.tokens[1]
+        }
+
+        get repMatches() {
+            return this.tokens[2]
+        }
+
+        get nCount() {
+            return this.tokens[3]
+        }
+
+        get qNumInsert() {
+            return this.tokens[4]
+        }
+
+        get qBaseInsert() {
+            return this.tokens[5]
+        }
+
+        get tNumInsert() {
+            return this.tokens[6]
+        }
+
+        get tBaseInsert() {
+            return this.tokens[7]
+
+        }
+
+        popupData() {
+            return [
+                {name: 'chr', value: this.chr},
+                {name: 'start', value: this.start + 1},
+                {name: 'end', value: this.end},
+                {name: 'strand', value: this.strand},
+                {name: 'score', value: this.score},
+                {name: 'match', value: this.matches},
+                {name: "mis-match", value: this.misMatches},
+                {name: "rep. match", value: this.repMatches},
+                {name: "N's", value: this.nCount},
+                {name: 'Q gap count', value: this.qNumInsert},
+                {name: 'Q gap bases', value: this.qBaseInsert},
+                {name: 'T gap count', value: this.tNumInsert},
+                {name: 'T gap bases', value: this.tBaseInsert},
+            ]
+        }
+
+    }
+
+    function decodeFusionJuncSpan(tokens, header) {
+
+        /*
+         Format:
+
+         0       #scaffold
+         1       fusion_break_name
+         2       break_left
+         3       break_right
+         4       num_junction_reads
+         5       num_spanning_frags
+         6       spanning_frag_coords
+
+         0       B3GNT1--NPSR1
+         1       B3GNT1--NPSR1|2203-10182
+         2       2203
+         3       10182
+         4       189
+         5       1138
+         6       1860-13757,1798-13819,1391-18127,1443-17174,...
+
+         */
+
+
+        if (tokens.length < 7) return undefined
+
+        var chr = tokens[0];
+        var fusion_name = tokens[1];
+        var junction_left = parseInt(tokens[2]);
+        var junction_right = parseInt(tokens[3]);
+        var num_junction_reads = parseInt(tokens[4]);
+        var num_spanning_frags = parseInt(tokens[5]);
+
+        var spanning_frag_coords_text = tokens[6];
+
+        var feature = {
+            chr: chr,
+            name: fusion_name,
+            junction_left: junction_left,
+            junction_right: junction_right,
+            num_junction_reads: num_junction_reads,
+            num_spanning_frags: num_spanning_frags,
+            spanning_frag_coords: [],
+
+            start: -1,
+            end: -1
+        }; // set start and end later based on min/max of span coords
+
+        var min_coord = junction_left;
+        var max_coord = junction_right;
+
+        if (num_spanning_frags > 0) {
+
+            var coord_pairs = spanning_frag_coords_text.split(',');
+
+            for (var i = 0; i < coord_pairs.length; i++) {
+                var split_coords = coord_pairs[i].split('-');
+
+                var span_left = split_coords[0];
+                var span_right = split_coords[1];
+
+                if (span_left < min_coord) {
+                    min_coord = span_left;
+                }
+                if (span_right > max_coord) {
+                    max_coord = span_right;
+                }
+                feature.spanning_frag_coords.push({left: span_left, right: span_right});
+
+            }
+        }
+
+        feature.start = min_coord;
+        feature.end = max_coord;
+
+
+        return feature
+
+    }
+
+    function decodeGtexGWAS(tokens, header) {
+        //chrom	chromStart	chromEnd	Strongest SNP-risk allele	Disease/Phenotype	P-value	Odds ratio or beta	PUBMEDID
+        //1	1247493	1247494	rs12103-A	Inflammatory bowel disease	8.00E-13	1.1	23128233
+
+        const tokenCount = tokens.length;
+        if (tokenCount < 7) {
+            return null
+        }
+        const feature = {
+            chr: tokens[0],
+            start: parseInt(tokens[1]) - 1,
+            end: parseInt(tokens[2]),
+            'Strongest SNP-risk allele': tokens[3],
+            'Disease/Phenotype': tokens[4],
+            'P-value': tokens[5],
+            'Odds ratio or beta': tokens[6],
+        };
+        if (tokens.length > 6) {
+            feature['PUBMEDID'] = `<a target = "blank" href = "https://www.ncbi.nlm.nih.gov/pubmed/${tokens[7]}">${tokens[7]}</a>`;
+        }
+        return feature
+    }
+
+    /**
+     * Decode a custom columnar format.  Required columns are 'chr' and 'start'
+     *
+     * @param tokens
+     * @param ignore
+     * @returns decoded feature, or null if this is not a valid record
+     */
+    function decodeCustom(tokens, header) {
+
+        const format = header.customFormat;
+
+        if (tokens.length < format.fields.length) return undefined
+
+        const coords = format.coords || 0;
+
+        const chr = tokens[format.chr];
+        const start = parseInt(tokens[format.start]) - coords;
+        const end = format.end !== undefined ? parseInt(tokens[format.end]) : start + 1;
+
+        const feature = {chr: chr, start: start, end: end};
+
+        if (format.fields) {
+            format.fields.forEach(function (field, index) {
+
+                if (index !== format.chr &&
+                    index !== format.start &&
+                    index !== format.end) {
+
+                    feature[field] = tokens[index];
+                }
+            });
+        }
+
+        return feature
+
+    }
+
+    /**
+     * Decode a gcnv record, a bed style format encoding copy number variation
+     *
+     * @param tokens
+     * @param header
+     */
+
+    function decodeGcnv(tokens, header) {
+
+        const columnNames = header.columnNames;
+        if (!columnNames) {
+            throw Error("Sample names are not defined.   Missing column headers?")
+        }
+        const sampleCount = columnNames.length - 3;
+
+        const chr = tokens[0];
+        const start = parseInt(tokens[1]);
+        const end = parseInt(tokens[2]);
+        const values = tokens.slice(3).map(Number);
+
+        if (values.length == sampleCount) {
+            return {
+                chr: chr,
+                start: start,
+                end: end,
+                values: values,
+            }
+        } else {
+            // TODO Throw error?
+            console.warn(`${chr}:${start}-${end} row contains ${values.length} sample columns instead of the expected ${sampleCount} columns. Skipping...`);
+            return undefined
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    /**
+     *  Parser for column style (tab delimited, etc) text file formats (bed, gff, vcf, etc).
+     *
+     *
+     */
+
+
+    /**
+     * Return a parser for the given file format.
+     */
+    class FeatureParser {
+
+        constructor(config) {
+
+            this.config = config;
+            this.header = {};
+            if (config.nameField) {
+                this.header.nameField = config.nameField;
+            }
+
+            this.skipRows = 0;   // The number of fixed header rows to skip.  Override for specific types as needed
+
+            if (config.decode) {
+                this.decode = config.decode;
+                this.delimiter = config.delimiter || "\t";
+            } else if (config.format) {
+                this.header.format = config.format.toLowerCase();
+                this.setDecoder(this.header.format);
+            }
+
+            if (!this.delimiter) {
+                this.delimiter = "\t";
+            }
+        }
+
+        /**
+         * Parse metadata from the file.   A variety of conventions are in use to supply metadata about file contents
+         * through header lines (e.g. 'track') and # directives. This method unifies metadata as properties of a
+         * 'header' object.
+         *
+         * @param data
+         * @returns {{}}
+         */
+        async parseHeader(dataWrapper) {
+
+            let header = this.header;
+            let columnNames;
+            let line;
+            while ((line = await dataWrapper.nextLine()) !== undefined) {
+                if (line.startsWith("track") || line.startsWith("#track")) {
+                    let h = parseTrackLine$1(line);
+                    Object.assign(header, h);
+                } else if (line.startsWith("browser")) ; else if (line.startsWith("#columns")) {
+                    let h = parseColumnsDirective$1(line);
+                    Object.assign(header, h);
+                } else if (line.startsWith("##gff-version 3")) {
+                    header.format = "gff3";
+                } else if (line.startsWith("#gffTags")) {
+                    header.gffTags = true;
+                } else if (line.startsWith("fixedStep") || line.startsWith("variableStep")) {
+                    // Wig directives -- we are in the data section
+                    break
+                } else if (line.startsWith("#")) {
+                    const tokens = line.split(this.delimiter || "\t");
+                    if (tokens.length > 1) {
+                        columnNames = tokens;   // Possible column names
+                    }
+                } else {
+                    // All directives that could change the format, and thus decoder, should have been read by now.
+                    this.setDecoder(header.format);
+
+                    // If the line can be parsed as a feature assume we are beyond the header, if any
+                    const tokens = line.split(this.delimiter || "\t");
+                    try {
+                        const tmpHeader = Object.assign({columnNames}, header);
+                        if (this.decode(tokens, tmpHeader)) {
+                            break
+                        } else {
+                            if (tokens.length > 1) {
+                                columnNames = tokens; // possible column names
+                            }
+                        }
+                    } catch (e) {
+                        // Not a feature
+                        if (tokens.length > 1) {
+                            columnNames = tokens; // possible column names
+                        }
+                    }
+                }
+            }
+
+            if (columnNames) {
+                header.columnNames = columnNames;
+                for (let n = 0; n < columnNames.length; n++) {
+                    if (columnNames[n] === "color" || columnNames[n] === "colour") {
+                        header.colorColumn = n;
+                    } else if (columnNames[n] === "thickness") {
+                        header.thicknessColumn = n;
+                    }
+                }
+            }
+
+            this.header = header;    // Directives might be needed for parsing lines
+            return header
+        }
+
+        async parseFeatures(dataWrapper) {
+
+            const allFeatures = [];
+            const decode = this.decode;
+            const format = this.header.format;
+            const delimiter = this.delimiter || "\t";
+            let i = 0;
+            let errorCount = 0;
+            let line;
+            while ((line = await dataWrapper.nextLine()) !== undefined) {
+                i++;
+                if (i <= this.skipRows) continue
+
+                if (!line || line.startsWith("track") || line.startsWith("#") || line.startsWith("browser")) {
+                    continue
+                } else if (format === "wig" && line.startsWith("fixedStep")) {
+                    this.header.wig = parseFixedStep(line);
+                    continue
+                } else if (format === "wig" && line.startsWith("variableStep")) {
+                    this.header.wig = parseVariableStep(line);
+                    continue
+                }
+
+                const tokens = line.split(delimiter);
+                if (tokens.length < 1) {
+                    continue
+                }
+
+                const feature = decode(tokens, this.header);
+
+                if (feature instanceof DecodeError) {
+                    errorCount++;
+                    if (errorCount > 0) {
+                        console.error(`Error parsing line '${line}': ${feature.message}`);
+                    }
+                    continue
+                }
+
+                if (feature) {
+                    allFeatures.push(feature);
+                }
+            }
+
+            // Special hack for bedPE
+            if (decode === decodeBedpe) {
+                fixBedPE(allFeatures);
+            }
+
+            return allFeatures
+
+        }
+
+        setDecoder(format) {
+
+            switch (format) {
+                case "narrowpeak":
+                case "broadpeak":
+                case "regionpeak":
+                case "peaks":
+                    this.decode = decodePeak;
+                    this.delimiter = this.config.delimiter || /\s+/;
+                    break
+                case "bedgraph":
+                    this.decode = decodeBedGraph;
+                    this.delimiter = /\s+/;
+                    break
+                case "wig":
+                    this.decode = decodeWig;
+                    this.delimiter = this.config.delimiter || /\s+/;
+                    break
+                case "gff3" :
+                case "gff":
+                    this.decode = decodeGFF3;
+                    this.delimiter = "\t";
+                    break
+                case "gtf" :
+                    this.decode = decodeGTF;
+                    this.delimiter = "\t";
+                    break
+                case "fusionjuncspan":
+                    // bhaas, needed for FusionInspector view
+                    this.decode = decodeFusionJuncSpan;
+                    this.delimiter = this.config.delimiter || /\s+/;
+                    break
+                case "gtexgwas":
+                    this.skipRows = 1;
+                    this.decode = decodeGtexGWAS;
+                    this.delimiter = "\t";
+                    break
+                case "refflat":
+                    this.decode = decodeReflat;
+                    this.delimiter = this.config.delimiter || /\s+/;
+                    break
+                case "genepred":
+                    this.decode = decodeGenePred;
+                    this.delimiter = this.config.delimiter || /\s+/;
+                    break
+                case "genepredext":
+                    this.decode = decodeGenePredExt;
+                    this.delimiter = this.config.delimiter || /\s+/;
+                    break
+                case "ensgene":
+                    this.decode = decodeGenePred;
+                    this.header.shift = 1;
+                    this.delimiter = this.config.delimiter || /\s+/;
+                    break
+                case "refgene":
+                    this.decode = decodeGenePredExt;
+                    this.delimiter = this.config.delimiter || /\s+/;
+                    this.header.shift = 1;
+                    break
+                case "bed":
+                    this.decode = decodeBed;
+                    this.delimiter = this.config.delimiter || /\s+/;
+                    break
+                case "bedpe":
+                case "hiccups":
+                    this.decode = decodeBedpe;
+                    this.delimiter = this.config.delimiter || "\t";
+                    break
+                case "bedpe-domain":
+                    this.decode = decodeBedpeDomain;
+                    this.headerLine = true;
+                    this.delimiter = this.config.delimiter || "\t";
+                    break
+                case "bedpe-loop":
+                    this.decode = decodeBedpe;
+                    this.delimiter = this.config.delimiter || "\t";
+                    this.header = {colorColumn: 7};
+                    break
+                case "interact":
+                    this.decode = decodeInteract;
+                    this.delimiter = this.config.delimiter || /\s+/;
+                    break
+                case "snp":
+                    this.decode = decodeSNP;
+                    this.delimiter = "\t";
+                    break
+                case "rmsk":
+                    this.decode = decodeRepeatMasker;
+                    this.delimiter = "\t";
+                    break
+                case "gcnv":
+                    this.decode = decodeGcnv;
+                    this.delimiter = "\t";
+                    break
+                default:
+                    const customFormat = getFormat(format);
+                    if (customFormat !== undefined) {
+                        this.decode = decodeCustom;
+                        this.header.customFormat = customFormat;
+                        this.delimiter = customFormat.delimiter || "\t";
+                    } else {
+                        this.decode = decodeBed;
+                        this.delimiter = this.config.delimiter || /\s+/;
+                    }
+            }
+
+        }
+    }
+
+    function parseTrackLine$1(line) {
+
+        const properties = {};
+        const tokens = line.split(/(?:")([^"]+)(?:")|([^\s"]+)(?=\s+|$)/g);
+
+        // Clean up tokens array
+        let curr;
+        const tmp = [];
+        for (let tk of tokens) {
+            if (!tk || tk.trim().length === 0) continue
+            if (tk.endsWith("=")) {
+                curr = tk;
+            } else if (curr) {
+                tmp.push(curr + tk);
+                curr = undefined;
+            } else {
+                tmp.push(tk);
+            }
+        }
+
+        for (let str of tmp) {
+            if (!str) return
+            var kv = str.split('=', 2);
+            if (kv.length === 2) {
+                const key = kv[0].trim();
+                const value = kv[1].trim();
+                if (properties.hasOwnProperty(key)) {
+                    let currentValue = properties[key];
+                    if (Array.isArray(currentValue)) {
+                        currentValue.push(value);
+                    } else {
+                        properties[key] = [currentValue, value];
+                    }
+                } else {
+                    properties[key] = value;
+                }
+            }
+        }
+        if ("interact" == properties["type"]) {
+            properties["format"] = "interact";
+        } else if ("gcnv" === properties["type"]) {
+            properties["format"] = "gcnv";
+        }
+        return properties
+    }
+
+    function parseColumnsDirective$1(line) {
+
+        let properties = {};
+        let t1 = line.split(/\s+/);
+
+        if (t1.length === 2) {
+            let t2 = t1[1].split(";");
+            t2.forEach(function (keyValue) {
+                let t = keyValue.split("=");
+                if (t[0] === "color") {
+                    properties.colorColumn = Number.parseInt(t[1]) - 1;
+                } else if (t[0] === "thickness") {
+                    properties.thicknessColumn = Number.parseInt(t[1]) - 1;
+                }
+            });
+        }
+
+        return properties
+    }
+
+    function parseFixedStep(line) {
+        const tokens = line.split(/\s+/);
+        const chrom = tokens[1].split("=")[1];
+        const start = parseInt(tokens[2].split("=")[1], 10) - 1;
+        const step = parseInt(tokens[3].split("=")[1], 10);
+        const span = (tokens.length > 4) ? parseInt(tokens[4].split("=")[1], 10) : 1;
+        return {format: "fixedStep", chrom, start, step, span, index: 0}
+    }
+
+    function parseVariableStep(line) {
+        const tokens = line.split(/\s+/);
+        const chrom = tokens[1].split("=")[1];
+        const span = tokens.length > 2 ? parseInt(tokens[2].split("=")[1], 10) : 1;
+        return {format: "variableStep", chrom, span}
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2018 Regents of the University of California
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const fixColor = (colorString) => {
+        if (isString$2(colorString)) {
+            return (colorString.indexOf(",") > 0 && !(colorString.startsWith("rgb(") || colorString.startsWith("rgba("))) ?
+                `rgb(${colorString})` : colorString
+        } else {
+            return colorString
+        }
+    };
+
+    /**
+     * A collection of properties and methods shared by all (or most) track types.
+     *
+     * @param config
+     * @param browser
+     * @constructor
+     */
+    class TrackBase {
+
+        static defaults = {
+            height: 50,
+            autoHeight: false,
+            visibilityWindow: undefined,   // Identifies property that should be copied from config
+            color: undefined,  // Identifies property that should be copied from config
+            altColor: undefined,  // Identifies property that should be copied from config
+            supportHiDPI: true
+        }
+
+        constructor(config, browser) {
+            this.browser = browser;
+            this.init(config);
+        }
+
+        /**
+         * Initialize track properties from the config object.  This method is typically overriden in subclasses, which
+         * will call this implementation as super.init(config).
+         *
+         * @param config
+         */
+        init(config) {
+
+            this.config = config;
+
+            if (config.displayMode) {
+                config.displayMode = config.displayMode.toUpperCase();
+            }
+
+            // Set default properties
+            const defaults = Object.assign({}, TrackBase.defaults);
+            if(this.constructor.defaults) {
+                for(let key of Object.keys(this.constructor.defaults)) {
+                    defaults[key] = this.constructor.defaults[key];
+                }
+            }
+            for(let key of Object.keys(defaults)) {
+                this[key] = config.hasOwnProperty(key) ? config[key] : defaults[key];
+                if(key === 'color' || key === 'altColor') {
+                    this[key] = fixColor(this[key]);
+                }
+            }
+
+            if (config.name || config.label) {
+                this.name = config.name || config.label;
+            } else if (isFile(config.url)) {
+                this.name = config.url.name;
+            } else if (isString$2(config.url) && !config.url.startsWith("data:")) {
+                this.name = getFilename$2(config.url);
+            }
+
+            this.url = config.url;
+            if(this.config.type) this.type = this.config.type;
+            this.id = this.config.id === undefined ? this.name : this.config.id;
+            this.order = config.order;
+            this.autoscaleGroup = config.autoscaleGroup;
+            this.removable = config.removable === undefined ? true : config.removable;      // Defaults to true
+            this.minHeight = config.minHeight || Math.min(25, this.height);
+            this.maxHeight = config.maxHeight || Math.max(1000, this.height);
+
+            if (config.onclick) {
+                this.onclick = config.onclick;
+                config.onclick = undefined;   // functions cannot be saved in sessions, clear it here.
+            }
+
+            if (config.description) {
+                // Override description -- displayed when clicking on track label.  Convert to function if neccessary
+                if (typeof config.description === 'function') {
+                    this.description = config.description;
+                } else {
+                    this.description = () => config.description;
+                }
+            }
+
+            // Support for mouse hover text.  This can be expensive, off by default.
+            // this.hoverText = function(clickState) => return tool tip text
+            if (config.hoverTextFields) {
+                this.hoverText = hoverText.bind(this);
+            } else if (typeof this.config.hoverText === 'function') {
+                this.hoverText = this.config.hoverText;
+            }
+        }
+
+        get name() {
+            return this._name
+        }
+
+        set name(name) {
+            this._name = name;
+            if (this.trackView) {
+                this.trackView.setTrackLabelName(name);
+            }
+        }
+
+        /**
+         * Update track properties from the config object.
+         *
+         * @param config
+         */
+        updateConfig(config) {
+            this.init(config);
+        }
+
+        clearCachedFeatures() {
+            if (this.trackView) {
+                this.trackView.clearCachedFeatures();
+            }
+        }
+
+        updateViews() {
+            if (this.trackView) {
+                this.trackView.updateViews();
+            }
+        }
+
+        /**
+         * Used to create session object for bookmarking, sharing.  Only simple property values (string, number, boolean)
+         * are saved.
+         */
+        getState() {
+
+            const jsonable = (v) => !(v === undefined || typeof v === 'function' || v instanceof File || v instanceof Promise);
+
+            // Create copy of config, minus transient properties (convention is name starts with '_').  Also, all
+            // function properties are transient as they cannot be saved in json
+            const state = {};
+            for (let key of Object.keys(this.config)) {
+                if (!key.startsWith("_") && jsonable(this.config[key])) {
+                    state[key] = this.config[key];
+                }
+            }
+
+            // Update original config values with any changes
+            for (let key of Object.keys(state)) {
+                if (key.startsWith("_")) continue   // transient property
+                const value = this[key];
+                if (value && (isSimpleType(value) || typeof value === "boolean" || key === "metadata")) {
+                    state[key] = value;
+                }
+            }
+
+            // If user has changed other properties from defaults update state.
+            const defs = TrackBase.defaults;
+            if (this.constructor.defaults) {
+                for (let key of Object.keys(this.constructor.defaults)) {
+                    defs[key] = this.constructor.defaults[key];
+                }
+            }
+            for (let key of Object.keys(defs)) {
+                if (undefined !== this[key] && defs[key] !== this[key]) {
+                    state[key] = this[key];
+                }
+            }
+
+            // Flatten dataRange if present
+            if (!this.autoscale && this.dataRange) {
+                state.min = this.dataRange.min;
+                state.max = this.dataRange.max;
+            }
+
+            return state
+        }
+
+        get supportsWholeGenome() {
+            return this.config.supportsWholeGenome === true
+        }
+
+        /**
+         * Does the track support sample names.  Current sample aware tracks include VCF (with genotypes), MUT, MAF, and SEG
+         * @returns {boolean}
+         */
+        hasSamples() {
+            return false
+        }
+
+        getGenomeId() {
+            return this.browser.genome ? this.browser.genome.id : undefined
+        }
+
+        /**
+         * Set certain track properties, usually from a "track" line.  Not all UCSC properties are supported.
+         *
+         * Track configuration settings have precendence over track line properties, so if both are present ignore the
+         * track line.
+         *
+         * @param properties
+         */
+        setTrackProperties(properties) {
+
+            if (this.disposed) return   // This track was removed during async load
+
+            const tracklineConfg = {};
+            let tokens;
+            for (let key of Object.keys(properties)) {
+                switch (key.toLowerCase()) {
+                    case "usescore":
+                        tracklineConfg.useScore = (
+                            properties[key] === 1 || properties[key] === "1" || properties[key] === "on" || properties[key] === true);
+                        break
+                    case "visibility":
+                        //0 - hide, 1 - dense, 2 - full, 3 - pack, and 4 - squish
+                        switch (properties[key]) {
+                            case "2":
+                            case "3":
+                            case "pack":
+                            case "full":
+                                tracklineConfg.displayMode = "EXPANDED";
+                                break
+                            case "4":
+                            case "squish":
+                                tracklineConfg.displayMode = "SQUISHED";
+                                break
+                            case "1":
+                            case "dense":
+                                tracklineConfg.displayMode = "COLLAPSED";
+                        }
+                        break
+                    case "color":
+                    case "altcolor":
+                        tracklineConfg[key] = properties[key].startsWith("rgb(") ? properties[key] : "rgb(" + properties[key] + ")";
+                        break
+                    case "featurevisiblitywindow":
+                    case "visibilitywindow":
+                        tracklineConfg.visibilityWindow = Number.parseInt(properties[key]);
+                        break
+                    case "maxheightpixels":
+                        tokens = properties[key].split(":");
+                        if (tokens.length === 3) {
+                            tracklineConfg.minHeight = Number.parseInt(tokens[2]);
+                            tracklineConfg.height = Number.parseInt(tokens[1]);
+                            tracklineConfg.maxHeight = Number.parseInt(tokens[0]);
+                        }
+                        break
+                    case "viewlimits":
+                        if (!this.config.autoscale) {   // autoscale in the config has precedence
+                            tokens = properties[key].split(":");
+                            let min = 0;
+                            let max;
+                            if (tokens.length == 1) {
+                                max = Number(tokens[0]);
+                            } else if (tokens.length == 2) {
+                                min = Number(tokens[0]);
+                                max = Number(tokens[1]);
+                            }
+                            tracklineConfg.autoscale = false;
+                            tracklineConfg.dataRange = {min, max};
+                            this.viewLimitMin = min;
+                            this.viewLimitMax = max;
+                        }
+                    case "name":
+                        tracklineConfg[key] = properties[key];
+                        break
+                    case "url":
+                        tracklineConfg["infoURL"] = properties[key];
+                        break
+                    case "type":
+                        const v = properties[key];
+                        if (UCSCTypeMappings.has(v)) {
+                            tracklineConfg[key] = UCSCTypeMappings.get(v);
+                        } else {
+                            tracklineConfg[key] = v;
+                        }
+                        break
+                    case "graphtype":
+                        tracklineConfg["graphType"] = properties[key];
+                        break
+                    default:
+                        tracklineConfg[key] = properties[key];
+                }
+            }
+
+            // Track configuration objects have precedence over track line properties in general.  The "name" property
+            // is an exception if it was derived and not explicitly entered (that is derived from the web app from filename).
+            for (let key of Object.keys(tracklineConfg)) {
+
+                if (!this.config.hasOwnProperty(key) || (key === "name" && this.config._derivedName)) {
+                    let value = tracklineConfg[key];
+                    if ("true" === value) value = true;
+                    if ("false" === value) value = false;
+
+                    this[key] = value;
+                    if (key === "height" && this.trackView) {
+                        try {
+                            const h = Number.parseInt(value);
+                            this.trackView.setTrackHeight(h);
+                        } catch (e) {
+                            console.error(e);
+                        }
+                    }
+                }
+            }
+        }
+
+        /**
+         * Return the features clicked over.  Default implementation assumes an array of features and only considers
+         * the genomic location.   Overriden by most subclasses.
+         *
+         * @param clickState
+         * @param features
+         * @returns {[]|*[]}
+         */
+        clickedFeatures(clickState) {
+
+            // We use the cached features rather than method to avoid async load.  If the
+            // feature is not already loaded this won't work,  but the user wouldn't be mousing over it either.
+            const features = clickState.viewport.cachedFeatures;
+
+            if (!features || !Array.isArray(features) || features.length === 0) {
+                return []
+            }
+
+            const genomicLocation = clickState.genomicLocation;
+
+            // When zoomed out we need some tolerance around genomicLocation
+            const tolerance = (clickState.referenceFrame.bpPerPixel > 0.2) ? 3 * clickState.referenceFrame.bpPerPixel : 0.2;
+            const ss = genomicLocation - tolerance;
+            const ee = genomicLocation + tolerance;
+            return (FeatureUtils.findOverlapping(features, ss, ee))
+        }
+
+        /**
+         * Default popup text function -- just extracts string and number properties in random order.
+         * @param feature
+         * @returns {Array}
+         */
+        extractPopupData(feature, genomeId) {
+
+            const filteredProperties = new Set(['row', 'color', 'chr', 'start', 'end', 'cdStart', 'cdEnd', 'strand', 'alpha']);
+            const data = [];
+
+            let alleles, alleleFreqs;
+            for (let property in feature) {
+
+                if (feature.hasOwnProperty(property) &&
+                    !filteredProperties.has(property) &&
+                    isSimpleType(feature[property])) {
+
+                    let value = feature[property];
+                    data.push({name: capitalize(property), value: value});
+
+                    if (property === "alleles") {
+                        alleles = feature[property];
+                    } else if (property === "alleleFreqs") {
+                        alleleFreqs = feature[property];
+                    }
+                }
+            }
+
+            if (alleles && alleleFreqs) {
+
+                if (alleles.endsWith(",")) {
+                    alleles = alleles.substr(0, alleles.length - 1);
+                }
+                if (alleleFreqs.endsWith(",")) {
+                    alleleFreqs = alleleFreqs.substr(0, alleleFreqs.length - 1);
+                }
+
+                let a = alleles.split(",");
+                let af = alleleFreqs.split(",");
+                if (af.length > 1) {
+                    let b = [];
+                    for (let i = 0; i < af.length; i++) {
+                        b.push({a: a[i], af: Number(af[i])});
+                    }
+                    b.sort(function (x, y) {
+                        return x.af - y.af
+                    });
+
+                    let ref = b[b.length - 1].a;
+                    if (ref.length === 1) {
+                        for (let i = b.length - 2; i >= 0; i--) {
+                            let alt = b[i].a;
+                            if (alt.length === 1) {
+                                if (!genomeId) genomeId = this.getGenomeId();
+                                const cravatLink = TrackBase.getCravatLink(feature.chr, feature.start + 1, ref, alt, genomeId);
+                                console.log(cravatLink);
+                                if (cravatLink) {
+                                    data.push('<hr/>');
+                                    data.push({html: cravatLink});
+                                    data.push('<hr/>');
+                                }
+                            }
+                        }
+                    }
+                }
+            }
+
+            if (feature.attributes) {
+                for (let key of Object.keys(feature.attributes)) {
+                    data.push({name: key, value: feature.attributes[key]});
+                }
+            }
+
+            // final chr position
+            let posString = `${feature.chr}:${numberFormatter$1(feature.start + 1)}-${numberFormatter$1(feature.end)}`;
+            if (feature.strand) {
+                posString += ` (${feature.strand})`;
+            }
+
+            data.push({name: 'Location', value: posString});
+
+            return data
+
+        }
+
+
+        /**
+         * Default track description -- displayed on click of track label.  This can be overriden in the track
+         * configuration, or in subclasses.
+         */
+        description() {
+
+            const wrapKeyValue = (k, v) => `<div class="igv-track-label-popup-shim"><b>${k}: </b>${v}</div>`;
+
+            let str = '<div class="igv-track-label-popup">';
+            if (this.url) {
+                if (isFile(this.url)) {
+                    str += wrapKeyValue('Filename', this.url.name);
+                } else {
+                    str += wrapKeyValue('URL', this.url);
+                }
+            } else {
+                str = this.name;
+            }
+            if (this.config) {
+                if (this.config.metadata) {
+                    for (let key of Object.keys(this.config.metadata)) {
+                        const value = this.config.metadata[key];
+                        str += wrapKeyValue(key, value);
+                    }
+                }
+
+                // Add any config properties that are capitalized
+                for (let key of Object.keys(this.config)) {
+                    if (key.startsWith("_")) continue   // transient property
+                    let first = key.substr(0, 1);
+                    if (first !== first.toLowerCase()) {
+                        const value = this.config[key];
+                        if (value && isSimpleType(value)) {
+                            str += wrapKeyValue(key, value);
+                        }
+                    }
+                }
+
+            }
+            str += '</div>';
+            return str
+        }
+
+        /**
+         * Return color for a specific feature of this track.  This default implementation is overriden by subclasses*
+         * @param f
+         * @returns {*|string|string}
+         */
+        getColorForFeature(f) {
+            return (typeof this.color === "function") ? this.color(feature) : this.color
+        }
+
+        /**
+         * Track has been permanently removed.  Release resources and other cleanup
+         */
+        dispose() {
+
+            this.disposed = true;
+
+            // This should not be neccessary, but in case there is some unknown reference holding onto this track object,
+            // for example in client code, release any resources here.
+            for (let key of Object.keys(this)) {
+                this[key] = undefined;
+            }
+        }
+
+        static getCravatLink(chr, position, ref, alt, genomeID) {
+
+            if ("hg38" === genomeID || "GRCh38" === genomeID) {
+
+                const cravatChr = chr.startsWith("chr") ? chr : "chr" + chr;
+                return `<a target="_blank" href="https://run.opencravat.org/result/nocache/variant.html` +
+                    `?chrom=${cravatChr}&pos=${position}&ref_base=${ref}&alt_base=${alt}"><b>Cravat ${ref}->${alt}</b></a>`
+
+            } else {
+                return undefined
+            }
+        }
+    }
+
+    function hoverText(clickState) {
+
+        if (!this.hoverTextFields) return
+
+        const features = this.clickedFeatures(clickState);
+
+        if (features && features.length > 0) {
+            let str = "";
+            for (let i = 0; i < features.length; i++) {
+                if (i === 10) {
+                    str += "; ...";
+                    break
+                }
+                if (!features[i]) continue
+
+                const f = features[i]._f || features[i];
+                if (str.length > 0) str += "\n";
+
+                str = "";
+                for (let field of this.hoverTextFields) {
+                    if (str.length > 0) str += "\n";
+                    if (f.hasOwnProperty(field)) {
+                        str += f[field];
+                    } else if (typeof f.getAttribute === "function") {
+                        str += f.getAttribute(field);
+                    }
+                }
+
+            }
+            return str
+        }
+    }
+
+    /**
+     * Map UCSC track line "type" setting to file format.  In igv.js "type" refers to the track type, not the input file format
+     * @type {Map<string, string>}
+     */
+    const UCSCTypeMappings = new Map([
+        ["wiggle_0", "wig"],
+        ["bed", "bed"],
+        ["bigBed", "bigBed"],
+        ["bigWig", "bigWig"]
+    ]);
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+
+    /**
+     *  Define parser for seg files  (.bed, .gff, .vcf, etc).  A parser should implement 2 methods
+     *
+     *     parseHeader(data) - return an object representing a header.  Details are format specific
+     *
+     *     parseFeatures(data) - return a list of features
+     *
+     */
+
+
+    class SegParser {
+
+        constructor(type) {
+            this.type = type || 'seg';   // One of seg, mut, or maf
+
+            switch (this.type) {
+                case 'mut':
+                    this.sampleColumn = 3;
+                    this.chrColumn = 0;
+                    this.startColumn = 1;
+                    this.endColumn = 2;
+                    this.dataColumn = 4;
+                    break
+                case 'maf':
+                    this.sampleColumn = 15;
+                    this.chrColumn = 4;
+                    this.startColumn = 5;
+                    this.endColumn = 6;
+                    this.dataColumn = 8;
+                    break
+                default:
+                    this.sampleColumn = 0;
+                    this.chrColumn = 1;
+                    this.startColumn = 2;
+                    this.endColumn = 3;
+                // Data column determined after reading header
+            }
+        }
+
+        async parseHeader(dataWrapper) {
+            let line;
+            while ((line = await dataWrapper.nextLine()) !== undefined) {
+                if (line.startsWith("#")) ; else {
+                    const tokens = line.split("\t");
+                    this.header = {headings: tokens};
+                    break
+                }
+            }
+            return this.header
+        }
+
+        async parseFeatures(dataWrapper) {
+
+            const allFeatures = [];
+            let extraHeaders;
+            if (!this.header) {
+                this.header = await this.parseHeader(dataWrapper);  // This will only work for non-indexed files
+            }
+            if ('seg' === this.type) {
+                this.dataColumn = this.header.headings.length - 1;
+            }
+            if (this.header.headings.length > 5) {
+                extraHeaders = this.extractExtraColumns(this.header.headings);
+            }
+            const valueColumnName = this.header.headings[this.dataColumn];
+
+            let line;
+            while ((line = await dataWrapper.nextLine()) !== undefined) {
+                const tokens = line.split("\t");
+                const value = ('seg' === this.type) ? Number(tokens[this.dataColumn]) : tokens[this.dataColumn];
+                if (tokens.length > this.dataColumn) {
+                    const feature = new SegFeature({
+                        sample: tokens[this.sampleColumn],
+                        chr: tokens[this.chrColumn],
+                        start: parseInt(tokens[this.startColumn]) - 1,
+                        end: parseInt(tokens[this.endColumn]),
+                        value,
+                        valueColumnName
+                    });
+                    if (extraHeaders) {
+                        const extraValues = this.extractExtraColumns(tokens);
+                        feature.setAttributes({names: extraHeaders, values: extraValues});
+                    }
+                    allFeatures.push(feature);
+                }
+            }
+            return allFeatures
+        }
+
+        extractExtraColumns(tokens) {
+            const extras = [];
+            for (let i = 0; i < tokens.length; i++) {
+                if (i !== this.chrColumn && i !== this.startColumn && i !== this.endColumn && i !== this.sampleColumn) {
+                    extras.push(tokens[i]);
+                }
+            }
+            return extras
+        }
+
+    }
+
+    class SegFeature {
+
+        constructor({sample, chr, start, end, value, valueColumnName}) {
+            this.sample = sample;
+            this.chr = chr;
+            this.start = start;
+            this.end = end;
+            this.value = value;
+            this.valueColumnName = valueColumnName;
+        }
+
+        setAttributes({names, values}) {
+            this.attributeNames = names;
+            this.attributeValues = values;
+        }
+
+        getAttribute(name) {
+            if (this.attributeNames) {
+                const idx = this.attributeNames.indexOf(name);
+                if (idx >= 0) {
+                    return this.attributeValues[idx]
+                }
+            }
+            return undefined
+        }
+
+
+        popupData(type, genomeID) {
+            const filteredProperties = new Set(['chr', 'start', 'end', 'sample', 'value', 'row', 'color', 'sampleKey',
+                'uniqueSampleKey', 'sampleId', 'chromosome', 'uniquePatientKey']);
+            const locationString = (this.chr + ":" +
+                numberFormatter$1(this.start + 1) + "-" +
+                numberFormatter$1(this.end));
+            const pd = [
+                {name: "Sample", value: this.sample},
+                {name: "Location", value: locationString},
+                {name: this.valueColumnName ? capitalize(this.valueColumnName) : "Value", value: this.value}
+            ];
+
+            // TODO -- the Cravat stuff should probably be in the track (SegTrack)
+            if ("mut" === type && "hg38" === genomeID) {
+                const l = this.extractCravatLink(genomeID);
+                if (l) {
+                    pd.push('<hr/>');
+                    pd.push({html: l});
+                    pd.push('<hr/>');
+                }
+            }
+
+            if (this.attributeNames && this.attributeNames.length > 0) {
+                for (let i = 0; i < this.attributeNames.length; i++) {
+                    if (!filteredProperties.has(this.attributeNames[i]) & this.valueColumnName !== this.attributeNames[i]) {
+                        pd.push({name: capitalize(this.attributeNames[i]), value: this.attributeValues[i]});
+                    }
+                }
+            }
+            return pd
+        }
+
+        extractCravatLink(genomeId) {
+
+            let ref, alt;
+            if (this.attributeNames && this.attributeNames.length > 0) {
+                for (let i = 0; i < this.attributeNames.length; i++) {
+                    if (!ref && "Reference_Allele" === this.attributeNames[i]) {
+                        ref = this.attributeValues[i];
+                    }
+                    if (!alt && this.attributeNames[i].startsWith("Tumor_Seq_Allele") && this.attributeValues[i] !== ref) {
+                        alt = this.attributeValues[i];
+                    }
+                    if (ref && alt) {
+                        return TrackBase.getCravatLink(this.chr, this.start + 1, ref, alt, genomeId)
+                    }
+                }
+            }
+
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    /**
+     * Create a variant from an array of tokens representing a line in a "VCF" file
+     * @param tokens
+     */
+    function createVCFVariant(tokens) {
+        const variant = new Variant();
+        variant.chr = tokens[0]; // TODO -- use genome aliases
+        variant.pos = parseInt(tokens[1]);
+        variant.names = tokens[2];    // id in VCF
+        variant.referenceBases = tokens[3];
+        variant.alternateBases = tokens[4];
+        variant.quality = tokens[5];
+        variant.filter = tokens[6];
+        variant.info = {};
+        const infoStr = tokens[7];
+        if (infoStr) {
+            for (let elem of infoStr.split(';')) {
+                var element = elem.split('=');
+                variant.info[element[0]] = element[1];
+            }
+        }
+        variant.init();
+        return variant
+    }
+
+
+    /**
+     * @deprecated - the GA4GH API has been deprecated.  This code no longer maintained.
+     * @param json
+     * @returns {Variant}
+     */
+    function createGAVariant(json) {
+
+        var variant = new Variant();
+
+        variant.chr = json.referenceName;
+        variant.start = parseInt(json.start);  // Might get overriden below
+        variant.end = parseInt(json.end);      // Might get overriden below
+        variant.pos = variant.start + 1;       // GA4GH is 0 based.
+        variant.names = arrayToString(json.names, "; ");
+        variant.referenceBases = json.referenceBases;
+        variant.alternateBases = arrayToString(json.alternateBases);
+        variant.quality = json.quality;
+        variant.filter = arrayToString(json.filter);
+
+
+        // Flatten GA4GH attributes array
+        variant.info = {};
+        if (json.info) {
+            Object.keys(json.info).forEach(function (key) {
+                var value,
+                    valueArray = json.info[key];
+
+                if (Array.isArray(valueArray)) {
+                    value = valueArray.join(",");
+                } else {
+                    value = valueArray;
+                }
+                variant.info[key] = value;
+            });
+        }
+
+
+        // Need to build a hash of calls for fast lookup
+        // Note from the GA4GH spec on call ID:
+        //
+        // The ID of the call set this variant call belongs to. If this field is not present,
+        // the ordering of the call sets from a SearchCallSetsRequest over this GAVariantSet
+        // is guaranteed to match the ordering of the calls on this GAVariant.
+        // The number of results will also be the same.
+        variant.calls = {};
+        var id;
+        if (json.calls) {
+            json.calls.forEach(function (call) {
+                id = call.callSetId;
+                variant.calls[id] = call;
+
+            });
+        }
+
+        init(variant);
+
+        return variant
+
+    }
+
+
+    class Variant {
+
+        init() {
+
+            const ref = this.referenceBases;
+            const altBases = this.alternateBases;
+
+            if (this.info) {
+                if (this.info["VT"]) {
+                    this.type = this.info["VT"];
+                } else if (this.info["SVTYPE"]) {
+                    this.type = "SV";
+                } else if (this.info["PERIOD"]) {
+                    this.type = "STR";
+                }
+            }
+            if (this.type === undefined) {
+                this.type = determineType(ref, altBases);
+            }
+            if (this.type === "NONVARIANT") {
+                this.heterozygosity = 0;
+            }
+
+            // Determine start/end coordinates -- these are the coordinates representing the actual variant,
+            // not the leading or trailing reference
+            if (this.info["END"]) {
+                this.start = this.pos - 1;
+                if (this.info["CHR2"] && this.info["CHR2"] !== this.chr) {
+                    this.end = this.start + 1;
+                } else {
+                    this.end = Number.parseInt(this.info["END"]);
+                }
+            } else {
+                if (this.type === "NONVARIANT") {
+                    this.start = this.pos - 1;      // convert to 0-based coordinate convention
+                    this.end = this.start + ref.length;
+                } else {
+
+                    const altTokens = altBases.split(",").filter(token => token.length > 0);
+                    this.alleles = [];
+                    this.start = undefined;
+                    this.end = undefined;
+
+                    for (let alt of altTokens) {
+
+                        this.alleles.push(alt);
+
+                        // We don't yet handle  SV and other special alt representations
+                        if ("SV" !== this.type && isKnownAlt(alt)) {
+
+                            let altLength = alt.length;
+                            let lengthOnRef = ref.length;
+                            const lmin = Math.min(altLength, lengthOnRef);
+
+                            // Trim off matching bases.  Try first match, then right -> left,  then any remaining left -> right
+                            let s = 0;
+
+                            while (s < lmin && (ref.charCodeAt(s) === alt.charCodeAt(s))) {
+                                s++;
+                                altLength--;
+                                lengthOnRef--;
+                            }
+
+                            // right -> left from end
+                            while (altLength > 0 && lengthOnRef > 0) {
+                                const altIdx = s + altLength - 1;
+                                const refIdx = s + lengthOnRef - 1;
+                                if (alt.charCodeAt(altIdx) === ref.charCodeAt(refIdx)) {
+                                    altLength--;
+                                    lengthOnRef--;
+                                } else {
+                                    break
+                                }
+                            }
+
+                            // if any remaining, left -> right
+                            while (altLength > 0 && lengthOnRef > 0) {
+                                const altIdx = s;
+                                const refIdx = s;
+                                if (alt.charCodeAt(altIdx) === ref.charCodeAt(refIdx)) {
+                                    s++;
+                                    altLength--;
+                                    lengthOnRef--;
+                                } else {
+                                    break
+                                }
+                            }
+
+                            const alleleStart = this.pos + s - 1;      // -1 for zero based coordinates
+                            const alleleEnd = alleleStart + lengthOnRef;
+                            this.start = this.start === undefined ? alleleStart : Math.min(this.start, alleleStart);
+                            this.end = this.end === undefined ? alleleEnd : Math.max(this.end, alleleEnd);
+                        }
+                    }
+
+                    // Default to single base representation @ position for variant types not otherwise handled
+                    if (this.start === undefined) {
+                        this.start = this.pos - 1;
+                        this.end = this.pos;
+                    }
+                }
+            }
+        }
+
+        popupData(genomicLocation, genomeId) {
+
+            const posString = `${numberFormatter$1(this.pos)}`;
+            const locString = this.start === this.end ?
+                `${numberFormatter$1(this.start)} | ${numberFormatter$1(this.start + 1)}` :
+                `${numberFormatter$1(this.start + 1)}-${numberFormatter$1(this.end)}`;
+            const fields = [
+                {name: "Chr", value: this.chr},
+                {name: "Pos", value: posString},
+                {name: "Loc", value: locString},
+                {name: "ID", value: this.names ? this.names : ""},
+                {name: "Ref", value: this.referenceBases},
+                {name: "Alt", value: this.alternateBases.replace("<", "&lt;")},
+                {name: "Qual", value: this.quality},
+                {name: "Filter", value: this.filter}
+            ];
+
+            if ("SNP" === this.type) {
+                let ref = this.referenceBases;
+                if (ref.length === 1) {
+                    let altArray = this.alternateBases.split(",");
+                    for (let alt of altArray) {
+                        if (alt.length === 1) {
+                            let l = TrackBase.getCravatLink(this.chr, this.pos, ref, alt, genomeId);
+                            if (l) {
+                                fields.push('<hr/>');
+                                fields.push({html: l});
+                            }
+                        }
+                    }
+                }
+            }
+
+            if (this.hasOwnProperty("heterozygosity")) {
+                fields.push({name: "Heterozygosity", value: this.heterozygosity});
+            }
+
+            if (this.info) {
+                fields.push({html: '<hr style="border-top: dotted 1px;border-color: #c9c3ba" />'});
+                for (let key of Object.keys(this.info)) {
+                    fields.push({name: key, value: arrayToString(decodeURIComponent(this.info[key]))});
+                }
+            }
+
+            return fields
+        }
+
+        getInfo(tag) {
+            return this.info ? this.info[tag] : undefined;
+        }
+
+        isRefBlock() {
+            return "NONVARIANT" === this.type
+        }
+
+    }
+
+    const knownAltBases = new Set(["A", "C", "T", "G"].map(c => c.charCodeAt(0)));
+
+    function isKnownAlt(alt) {
+        for (let i = 0; i < alt.length; i++) {
+            if (!knownAltBases.has(alt.charCodeAt(i))) {
+                return false
+            }
+        }
+        return true
+    }
+
+
+    function determineType(ref, altAlleles) {
+        const refLength = ref.length;
+        if (altAlleles === undefined) {
+            return "UNKNOWN"
+        } else if (altAlleles.trim().length === 0 ||
+            altAlleles === "<NON_REF>" ||
+            altAlleles === "<*>" ||
+            altAlleles === ".") {
+            return "NONVARIANT"
+        } else {
+            const alleles = altAlleles.split(",");
+            const types = alleles.map(function (a) {
+                if (refLength === 1 && a.length === 1) {
+                    return "SNP"
+                } else {
+                    return "<NON_REF>" === a ? "NONVARIANT" : "OTHER"
+                }
+            });
+            let type = types[0];
+            for (let t of types) {
+                if (t !== type) {
+                    return "MIXED"
+                }
+            }
+            return type
+        }
+    }
+
+    function arrayToString(value, delim) {
+
+        if (delim === undefined) delim = ",";
+
+        if (!(Array.isArray(value))) {
+            return value
+        }
+        return value.join(delim)
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    /**
+     * Parser for VCF files.
+     */
+
+    class VcfParser {
+
+        construtor() {
+        }
+
+        async parseHeader(dataWrapper, genome) {
+
+            const header = {};
+
+            header.chrAliasTable = new Map();
+
+            // First line must be file format
+            let line = await dataWrapper.nextLine();
+            if (line.startsWith("##fileformat")) {
+                header.version = line.substr(13);
+            } else {
+                throw new Error("Invalid VCF file: missing fileformat line")
+            }
+
+            while ((line = await dataWrapper.nextLine()) !== undefined) {
+
+                if (line.startsWith("#")) {
+
+                    let id;
+                    const values = {};
+
+                    if (line.startsWith("##")) {
+
+                        if (line.startsWith("##INFO") || line.startsWith("##FILTER") || line.startsWith("##FORMAT")) {
+
+                            const ltIdx = line.indexOf("<");
+                            const gtIdx = line.lastIndexOf(">");
+
+                            if (!(ltIdx > 2 && gtIdx > 0)) {
+                                console.log("Malformed VCF header line: " + line);
+                                continue
+                            }
+
+                            const type = line.substring(2, ltIdx - 1);
+                            if (!header[type]) header[type] = {};
+
+                            //##INFO=<ID=AF,Number=A,Type=Float,Description="Allele frequency based on Flow Evaluator observation counts">
+                            // ##FILTER=<ID=NOCALL,Description="Generic filter. Filtering details stored in FR info tag.">
+                            // ##FORMAT=<ID=AF,Number=A,Type=Float,Description="Allele frequency based on Flow Evaluator observation counts">
+
+                            const tokens = splitStringRespectingQuotes(line.substring(ltIdx + 1, gtIdx - 1), ",");
+
+                            for (let token of tokens) {
+                                var kv = token.split("=");
+                                if (kv.length > 1) {
+                                    if (kv[0] === "ID") {
+                                        id = kv[1];
+                                    } else {
+                                        values[kv[0]] = kv[1];
+                                    }
+                                }
+                            }
+
+                            if (id) {
+                                header[type][id] = values;
+                            }
+                        } else if (line.startsWith("##contig") && genome) {
+                            const idx1 = line.indexOf("<ID=");
+                            let idx2 = line.indexOf(",", idx1);
+                            if (idx2 == -1) {
+                                idx2 = line.indexOf(">", idx1);
+                            }
+                            const chr = line.substring(idx1 + 4, idx2);
+                            const canonicalChromosome = genome.getChromosomeName(chr);
+                            header.chrAliasTable.set(canonicalChromosome, chr);
+                        } else ;
+                    } else if (line.startsWith("#CHROM")) {
+                        const tokens = line.split("\t");
+
+                        if (tokens.length > 8) {
+
+                            // call set names -- use column index for id
+                            header.callSets = [];
+                            for (let j = 9; j < tokens.length; j++) {
+                                header.callSets.push({id: j, name: tokens[j]});
+                            }
+                        }
+                    }
+
+                } else {
+                    break
+                }
+
+            }
+
+            this.header = header;  // Will need to intrepret genotypes and info field
+
+            return header
+        }
+
+
+        /**
+         * Parse data as a collection of Variant objects.
+         *
+         * @param data
+         * @returns {Array}
+         */
+        async parseFeatures(dataWrapper) {
+
+            const allFeatures = [];
+            const callSets = this.header.callSets;
+            const nExpectedColumns = 8 + (callSets ? callSets.length + 1 : 0);
+            let line;
+            while ((line = await dataWrapper.nextLine()) !== undefined) {
+                if (line && !line.startsWith("#")) {
+
+                    const tokens = line.split("\t");
+                    if (tokens.length === nExpectedColumns) {
+                        const variant = createVCFVariant(tokens);
+                        variant.header = this.header;       // Keep a pointer to the header to interpret fields for popup text
+                        //variant.line = line              // Uncomment for debugging
+                        allFeatures.push(variant);
+
+                        if (tokens.length > 9) {
+
+                            // Format
+                            const callFields = extractCallFields(tokens[8].split(":"));
+
+                            variant.calls = {};
+                            for (let index = 9; index < tokens.length; index++) {
+
+                                const token = tokens[index];
+
+                                const callSet = callSets[index - 9];
+                                const call = {
+                                    callSetName: callSet.name,
+                                    info: {}
+                                };
+
+                                variant.calls[callSet.id] = call;
+
+                                token.split(":").forEach(function (callToken, idx) {
+
+                                    switch (idx) {
+                                        case callFields.genotypeIndex:
+                                            call.genotype = [];
+                                            callToken.split(/[\|\/]/).forEach(function (s) {
+                                                call.genotype.push('.' === s ? s : parseInt(s));
+                                            });
+                                            break
+
+                                        default:
+                                            call.info[callFields.fields[idx]] = callToken;
+                                    }
+                                });
+                            }
+                        }
+
+                        // If this is a structural variant create a complement of this variant for the other end
+                        // The test for "SV" is not comprehensive, there is not yet a standard for this
+                        if (variant.info && variant.info.CHR2 && variant.info.END) {
+                            allFeatures.push(svComplement(variant));
+                        }
+                    }
+                }
+            }
+
+            return allFeatures
+        }
+    }
+
+    function extractCallFields(tokens) {
+
+        const callFields = {
+            genotypeIndex: -1,
+            fields: tokens
+        };
+        for (let i = 0; i < tokens.length; i++) {
+            if ("GT" === tokens[i]) {
+                callFields.genotypeIndex = i;
+            }
+        }
+        return callFields
+    }
+
+    function svComplement(v) {
+
+        const chr2 = v.info.CHR2;
+        const pos2 = Number.parseInt(v.info.END);
+        return {
+            chr: chr2,
+            start: pos2 - 1,
+            end: pos2,
+            _f: v
+        }
+
+    }
+
+    /**
+     * Parser for IGV desktop GWAS files.  See http://software.broadinstitute.org/software/igv/GWAS
+     */
+    class GWASParser {
+
+        constructor(config) {
+            // Defaults - can be overriden by header
+            this.config = config;
+            if (config.columns) {
+                if (config.columns.chromosome === undefined ||
+                    config.columns.position === undefined ||
+                    config.columns.value === undefined) {
+                    throw Error("columns property must define chrCol, posCol, and valueCol")
+                }
+                this.posCol = config.columns.position - 1;
+                this.chrCol = config.columns.chromosome - 1;
+                this.valueCol = config.columns.value - 1;
+            } else {
+                // Defaults -- can be overriden in header
+                this.posCol = 2;
+                this.chrCol = 1;
+                this.valueCol = 3;
+            }
+        }
+
+        async parseHeader(dataWrapper) {
+            const headerLine = await dataWrapper.nextLine();
+            return this.parseHeaderLine(headerLine)
+        }
+
+        parseHeaderLine(headerLine) {
+            this.columns = headerLine.split(/\t/);
+            if (!this.config.columns) {
+                for (let i = 0; i < this.columns.length; i++) {
+                    const c = this.columns[i].toLowerCase();
+                    switch (c) {
+                        case 'chr':
+                        case 'chromosome':
+                        case 'chr_id':
+                            this.chrCol = i;
+                            break
+                        case 'bp':
+                        case 'pos':
+                        case 'position':
+                        case 'chr_pos':
+                            this.posCol = i;
+                            break
+                        case 'p':
+                        case 'pval':
+                        case 'pvalue':
+                        case 'p-value':
+                        case 'p.value':
+                            this.valueCol = i;
+                            break
+                    }
+                }
+            }
+            return this.columns
+        }
+
+        async parseFeatures(dataWrapper) {
+
+            const allFeatures = [];
+            const headerLine = dataWrapper.nextLine();
+            if (!this.columns) {
+                this.parseHeaderLine(headerLine);
+            }
+            let line;
+            while ((line = dataWrapper.nextLine()) !== undefined) {
+                const tokens = line.split(/\t/);
+                if (tokens.length === this.columns.length) {
+                    const chr = tokens[this.chrCol];
+                    const start = parseInt(tokens[this.posCol]) - 1;
+                    const end = start + 1;
+                    const value = Number(tokens[this.valueCol]);
+                    allFeatures.push(new GWASFeature({
+                        chr: chr,
+                        start: start,
+                        end: end,
+                        value: value,
+                        line: line,
+                        columns: this.columns
+                    }));
+                }
+            }
+            return allFeatures
+        }
+    }
+
+    class GWASFeature {
+
+        constructor({chr, start, end, value, line, columns}) {
+            this.chr = chr;
+            this.start = start;
+            this.end = end;
+            this.value = value;
+            this.line = line;
+            this.columns = columns;
+        }
+
+        popupData() {
+            const tokens = this.line.split(/\t/);
+            return this.columns.map(function (c, index) {
+                return {name: c, value: tokens[index]}
+            })
+        }
+
+        getAttribute(attrName) {
+            const tokens = this.line.split(/\t/);
+            for (let i = 0; i < this.columns.length; i++) {
+                if (this.columns[i] === attrName) {
+                    return tokens[i]
+                }
+            }
+            return undefined
+        }
+
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    /**
+     *  Define parsers for bed-like files  (.bed, .gff, .vcf, etc).  A parser should implement 2 methods
+     *
+     *     parseHeader(data) - return an object representing a header or metadata.  Details are format specific
+     *
+     *     parseFeatures(data) - return an array of features
+     *
+     */
+
+    var aedRegexpNoNamespace = new RegExp("([^:]*)\\(([^)]*)\\)"); // name(type) for AED parsing (namespace undefined)
+    var aedRegexpNamespace = new RegExp("([^:]*):([^(]*)\\(([^)]*)\\)"); // namespace:name(type) for AED parsing
+
+
+    class AEDParser {
+
+        constructor(config) {
+            const decode = config ? config.decode : undefined;
+            this.nameField = config ? config.nameField : undefined;
+            this.skipRows = 0;   // The number of fixed header rows to skip.  Override for specific types as needed
+            if (decode) {
+                this.decode = decode;
+            } else {
+                this.decode = decodeAed;
+            }
+            this.delimiter = "\t";
+        }
+
+        async parseHeader(dataWrapper) {
+            let line;
+            let header;
+            while (line = await dataWrapper.nextLine()) {
+                if (line.startsWith("track") || line.startsWith("#") || line.startsWith("browser")) {
+                    if (line.startsWith("track") || line.startsWith("#track")) {
+                        let h = parseTrackLine(line);
+                        if (header) {
+                            Object.assign(header, h);
+                        } else {
+                            header = h;
+                        }
+                    } else if (line.startsWith("#columns")) {
+                        let h = parseColumnsDirective(line);
+                        if (header) {
+                            Object.assign(header, h);
+                        } else {
+                            header = h;
+                        }
+                    } else if (line.startsWith("##gff-version 3")) {
+                        this.format = "gff3";
+                        if (!header) header = {};
+                        header["format"] = "gff3";
+                    }
+                } else {
+                    break
+                }
+            }
+            this.header = header;    // Directives might be needed for parsing lines
+            return header
+        }
+
+        async parseFeatures(dataWrapper) {
+
+            const allFeatures = [];
+            const decode = this.decode;
+            const delimiter = this.delimiter || "\t";
+            let i = 0;
+            let line;
+            let wig;
+
+            while ((line = dataWrapper.nextLine()) !== undefined) {
+                i++;
+                if (i <= this.skipRows || line.startsWith("track") || line.startsWith("#") || line.startsWith("browser")) {
+                    continue
+                }
+
+                let tokens = readTokensAed();
+                if (tokens.length < 1) {
+                    continue
+                }
+
+                if (!this.aed) {
+                    // Store information about the aed header in the parser itself
+                    // This is done only once - on the first row
+                    this.aed = parseAedHeaderRow(tokens);
+                    continue
+                }
+
+                const feature = decode.call(this, tokens, wig);
+                if (feature) {
+                    allFeatures.push(feature);
+                }
+            }
+
+            return allFeatures
+
+            // Double quoted strings can contain newlines in AED
+            // "" is an escape for a ".
+            // Parse all this, clean it up, split into tokens in a custom way
+            function readTokensAed() {
+                var tokens = [],
+                    token = "",
+                    quotedString = false,
+                    n,
+                    c;
+
+                while (line || line === '') {
+                    for (n = 0; n < line.length; n++) {
+                        c = line.charAt(n);
+                        if (c === delimiter) {
+                            if (!quotedString) {
+                                tokens.push(token);
+                                token = "";
+                            } else {
+                                token += c;
+                            }
+                        } else if (c === "\"") {
+                            // Look ahead to the next character
+                            if (n + 1 < line.length && line.charAt(n + 1) === "\"") {
+                                if (quotedString) {
+                                    // Turn "" into a single " in the output string
+                                    token += "\"";
+                                }
+                                // Skip the next double quote
+                                n++;
+                            } else {
+                                // We know the next character is NOT a double quote, flip our state
+                                quotedString = !quotedString;
+                            }
+                        } else {
+                            token += c;
+                        }
+                    }
+                    // We are at the end of the line
+                    if (quotedString) {
+                        token += '\n'; // Add newline to the token
+                        line = nextLine(); // Keep going
+                    } else {
+                        // We can end the loop
+                        break
+                    }
+                }
+                // Push the last token
+                tokens.push(token);
+                return tokens
+            }
+        }
+    }
+
+
+    function parseAedToken(value) {
+        // Example: refseq:accessionNumber(aed:String)
+        // refseq - namespace, will be declared later
+        // accessionNumber - name of the field
+        // aed:String - type of the field
+        // The namespace part may be missing
+        var match = aedRegexpNamespace.exec(value);
+        if (match) {
+            return {
+                namespace: match[1],
+                name: match[2],
+                type: match[3]
+            }
+        }
+
+        match = aedRegexpNoNamespace.exec(value);
+        if (match) {
+            return {
+                namespace: '?',
+                name: match[1],
+                type: match[2]
+            }
+        } else {
+            throw new Error("Error parsing the header row of AED file - column not in ns:name(ns:type) format")
+        }
+    }
+
+    function parseAedHeaderRow(tokens) {
+        // First row of AED file defines column names
+        // Each header item is an aed token - see parseAedToken
+        var aed,
+            k,
+            token,
+            aedToken;
+
+        // Initialize aed section to be filled in
+        aed = {
+            columns: [ // Information about the namespace, name and type of each column
+                // Example entry:
+                // { namespace: 'bio', name: 'start', type: 'aed:Integer' }
+            ],
+            metadata: { // Metadata about the entire AED file
+                // Example:
+                // {
+                //    aed: {
+                //       application: { value: "CHaS Browser 3.3.0.139 (r10838)", type: "aed:String" },
+                //       created: { value: "2018-01-02T10:20:30.123+01:00", type: "aed:DateTime" },
+                //       modified: { value: "2018-03-04T11:22:33.456+01:00", type: "aed:DateTime" },
+                //    }
+                //    affx: {
+                //       ucscGenomeVersion: { value: "hg19", type: "aed:String" }
+                //    },
+                //    namespace: {
+                //       omim: { value: "http://affymetrix.com/ontology/www.ncbi.nlm.nih.gov/omim/", type: "aed:URI" },
+                //       affx: { value: "http://affymetrix.com/ontology/", type: "aed:URI" },
+                //       refseq: { value: "http://affymetrix.com/ontology/www.ncbi.nlm.nih.gov/RefSeq/", type: "aed:URI" }
+                //    }
+                // }
+            }
+        };
+        for (k = 0; k < tokens.length; k++) {
+            token = tokens[k];
+            aedToken = parseAedToken(token);
+            aed.columns.push(aedToken);
+        }
+
+        return aed
+    }
+
+    function parseTrackLine(line) {
+
+        const properties = {};
+        const tokens = line.split(/(?:")([^"]+)(?:")|([^\s"]+)(?=\s+|$)/g);
+
+
+        // Clean up tokens array
+        let curr;
+        const tmp = [];
+        for (let tk of tokens) {
+            if (!tk || tk.trim().length === 0) continue
+            if (tk.endsWith("=") > 0) {
+                curr = tk;
+            } else if (curr) {
+                tmp.push(curr + tk);
+                curr = undefined;
+            } else {
+                tmp.push(tk);
+            }
+        }
+        for (let str of tmp) {
+            if (!str) return
+            var kv = str.split('=', 2);
+            if (kv.length === 2) {
+                const key = kv[0].trim();
+                const value = kv[1].trim();
+                properties[key] = value;
+            }
+
+        }
+
+        return properties
+    }
+
+    function parseColumnsDirective(line) {
+
+        let properties = {};
+        let t1 = line.split(/\s+/);
+
+        if (t1.length === 2) {
+
+            let t2 = t1[1].split(";");
+
+            t2.forEach(function (keyValue) {
+
+                let t = keyValue.split("=");
+
+                if (t[0] === "color") {
+                    properties.colorColumn = Number.parseInt(t[1]) - 1;
+                } else if (t[0] === "thickness") {
+                    properties.thicknessColumn = Number.parseInt(t[1]) - 1;
+                }
+            });
+        }
+
+        return properties
+    }
+
+    /**
+     * AED file feature.
+     *
+     * @param aed link to the AED file object containing file-level metadata and column descriptors
+     * @param allColumns All columns as parsed from the AED
+     *
+     * Other values are parsed one by one
+     */
+    function AedFeature(aed, allColumns) {
+        var token, aedColumn, aedColumns = aed.columns;
+
+        // Link to AED file (for metadata)
+        this.aed = aed;
+
+        // Unparsed columns from AED file
+        this.allColumns = allColumns;
+
+        // Prepare space for the parsed values
+        this.chr = null;
+        this.start = null;
+        this.end = null;
+        this.score = 1000;
+        this.strand = '.';
+        this.cdStart = null;
+        this.cdEnd = null;
+        this.name = null;
+        this.color = null;
+
+        for (let i = 0; i < allColumns.length; i++) {
+            token = allColumns[i];
+            if (!token) {
+                // Skip empty fields
+                continue
+            }
+            aedColumn = aedColumns[i];
+            if (aedColumn.type === 'aed:Integer') {
+                token = parseInt(token);
+            }
+            var arr = [];
+            if (aedColumn.namespace.length > 0) {
+                for (let j = 0; j < aedColumn.namespace.length; j++) {
+                    arr.push(aedColumn.namespace.charCodeAt(j));
+                }
+            }
+            if (aedColumn.namespace.trim() === 'bio') {
+                if (aedColumn.name === 'sequence') {
+                    this.chr = token;
+                } else if (aedColumn.name === 'start') {
+                    this.start = token;
+                } else if (aedColumn.name === 'end') {
+                    this.end = token;
+                } else if (aedColumn.name === 'cdsMin') {
+                    this.cdStart = token;
+                } else if (aedColumn.name === 'cdsMax') {
+                    this.cdEnd = token;
+                } else if (aedColumn.name === 'strand') {
+                    this.strand = token;
+                }
+            } else if (aedColumn.namespace === 'aed') {
+                if (aedColumn.name === 'name') {
+                    this.name = token;
+                }
+            } else if (aedColumn.namespace === 'style') {
+                if (aedColumn.name === 'color') {
+                    this.color = IGVColor.createColorString(token);
+                }
+            }
+        }
+    }
+
+    AedFeature.prototype.popupData = function () {
+        var data = [],
+            aed = this.aed;
+        // Just dump everything we have for now
+        for (var i = 0; i < this.allColumns.length; i++) {
+            var featureValue = this.allColumns[i];
+            var name = aed.columns[i].name;
+            // Skip columns that are not interesting - you know the sequence, and you can see color
+            if (name !== 'sequence' && name !== 'color') {
+                if (featureValue) {
+                    data.push({name: name, value: featureValue});
+                }
+            }
+        }
+        return data
+    };
+
+    /**
+     * Decode the AED file format
+     * @param tokens
+     * @param ignore
+     * @returns decoded feature, or null if this is not a valid record
+     */
+    function decodeAed(tokens, ignore) {
+        var name, value, token,
+            nonEmptyTokens = 0,
+            aedColumns = this.aed.columns,
+            aedColumn,
+            aedKey,
+            i;
+
+        // Each aed row must match the exact number of columns or we skip it
+        if (tokens.length !== aedColumns.length) {
+            console.log('Corrupted AED file row: ' + tokens.join(','));
+            return undefined
+        }
+
+        for (i = 0; i < tokens.length; i++) {
+            aedColumn = aedColumns[i];
+            token = tokens[i];
+            if (token !== '') {
+                nonEmptyTokens++;
+            }
+            if (aedColumn.name === 'name' && aedColumn.namespace === 'aed') {
+                name = token;
+            } else if (aedColumn.name === 'value' && aedColumn.namespace === 'aed') {
+                value = token;
+            }
+        }
+
+        if (nonEmptyTokens === 2 && name && value) {
+            // Special row that defines metadata for the entire file
+            aedKey = parseAedToken(name);
+            // Store in the metadata section
+            if (!this.aed.metadata[aedKey.namespace]) {
+                this.aed.metadata[aedKey.namespace] = {};
+            }
+            if (!this.aed.metadata[aedKey.namespace][aedKey.name]) {
+                this.aed.metadata[aedKey.namespace][aedKey.name] = {
+                    type: aedKey.type,
+                    value: value
+                };
+            }
+            // Ignore this value
+            return undefined
+        }
+
+        var feature = new AedFeature(this.aed, tokens);
+
+        if (!feature.chr || (!feature.start && feature.start !== 0) || !feature.end) {
+            console.log('Cannot parse feature: ' + tokens.join(','));
+            return undefined
+        }
+
+        return feature
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+
+    // TODO -- big endian?
+
+    class BinaryParser {
+        constructor(dataView, littleEndian) {
+
+            this.littleEndian = littleEndian !== undefined ? littleEndian : true;
+            this.position = 0;
+            this.view = dataView;
+            this.length = dataView.byteLength;
+        }
+
+        available() {
+            return this.length - this.position
+        }
+
+        remLength() {
+            return this.length - this.position
+        }
+
+        hasNext() {
+            return this.position < this.length - 1
+        }
+
+        getByte() {
+            var retValue = this.view.getUint8(this.position, this.littleEndian);
+            this.position++;
+            return retValue
+        }
+
+        getShort() {
+
+            var retValue = this.view.getInt16(this.position, this.littleEndian);
+            this.position += 2;
+            return retValue
+        }
+
+        getUShort() {
+
+            // var byte1 = this.getByte(),
+            //     byte2 = this.getByte(),
+            //     retValue = ((byte2 << 24 >>> 16) + (byte1 << 24 >>> 24));
+            //     return retValue;
+
+            //
+            var retValue = this.view.getUint16(this.position, this.littleEndian);
+            this.position += 2;
+            return retValue
+        }
+
+
+        getInt() {
+
+            var retValue = this.view.getInt32(this.position, this.littleEndian);
+            this.position += 4;
+            return retValue
+        }
+
+
+        getUInt() {
+            var retValue = this.view.getUint32(this.position, this.littleEndian);
+            this.position += 4;
+            return retValue
+        }
+
+        getLong() {
+
+            // DataView doesn't support long. So we'll try manually
+
+            var b = [];
+            b[0] = this.view.getUint8(this.position);
+            b[1] = this.view.getUint8(this.position + 1);
+            b[2] = this.view.getUint8(this.position + 2);
+            b[3] = this.view.getUint8(this.position + 3);
+            b[4] = this.view.getUint8(this.position + 4);
+            b[5] = this.view.getUint8(this.position + 5);
+            b[6] = this.view.getUint8(this.position + 6);
+            b[7] = this.view.getUint8(this.position + 7);
+
+            var value = 0;
+            if (this.littleEndian) {
+                for (let i = b.length - 1; i >= 0; i--) {
+                    value = (value * 256) + b[i];
+                }
+            } else {
+                for (let i = 0; i < b.length; i++) {
+                    value = (value * 256) + b[i];
+                }
+            }
+
+
+            this.position += 8;
+            return value
+        }
+
+        getString(len) {
+
+            var s = "";
+            var c;
+            while ((c = this.view.getUint8(this.position++)) !== 0) {
+                s += String.fromCharCode(c);
+                if (len && s.length === len) break
+            }
+            return s
+        }
+
+        getFixedLengthString(len) {
+
+            var s = "";
+            var i;
+            var c;
+            for (i = 0; i < len; i++) {
+                c = this.view.getUint8(this.position++);
+                if (c > 0) {
+                    s += String.fromCharCode(c);
+                }
+            }
+            return s
+        }
+
+        getFixedLengthTrimmedString(len) {
+
+            var s = "";
+            var i;
+            var c;
+            for (i = 0; i < len; i++) {
+                c = this.view.getUint8(this.position++);
+                if (c > 32) {
+                    s += String.fromCharCode(c);
+                }
+            }
+            return s
+        }
+
+        getFloat() {
+
+            var retValue = this.view.getFloat32(this.position, this.littleEndian);
+            this.position += 4;
+            return retValue
+
+
+        }
+
+        getDouble() {
+
+            var retValue = this.view.getFloat64(this.position, this.littleEndian);
+            this.position += 8;
+            return retValue
+        }
+
+        skip(n) {
+
+            this.position += n;
+            return this.position
+        }
+
+
+        /**
+         * Return a BGZip (bam and tabix) virtual pointer
+         * TODO -- why isn't 8th byte used ?
+         * @returns {*}
+         */
+        getVPointer() {
+
+            var position = this.position,
+                offset = (this.view.getUint8(position + 1) << 8) | (this.view.getUint8(position)),
+                byte6 = ((this.view.getUint8(position + 6) & 0xff) * 0x100000000),
+                byte5 = ((this.view.getUint8(position + 5) & 0xff) * 0x1000000),
+                byte4 = ((this.view.getUint8(position + 4) & 0xff) * 0x10000),
+                byte3 = ((this.view.getUint8(position + 3) & 0xff) * 0x100),
+                byte2 = ((this.view.getUint8(position + 2) & 0xff)),
+                block = byte6 + byte5 + byte4 + byte3 + byte2;
+            this.position += 8;
+
+            //       if (block == 0 && offset == 0) {
+            //           return null;
+            //       } else {
+            return new VPointer(block, offset)
+            //       }
+        }
+    }
+
+    class VPointer {
+        constructor(block, offset) {
+            this.block = block;
+            this.offset = offset;
+        }
+
+        isLessThan(vp) {
+            return this.block < vp.block ||
+                (this.block === vp.block && this.offset < vp.offset)
+        }
+
+        isGreaterThan(vp) {
+            return this.block > vp.block ||
+                (this.block === vp.block && this.offset > vp.offset)
+        }
+
+        isEqualTo(vp) {
+            return this.block === vp.block && this.offset === vp.offset
+        }
+
+        print() {
+            return "" + this.block + ":" + this.offset
+        }
+    }
+
+    function optimizeChunks(chunks, lowest) {
+
+        if (chunks.length === 0) return chunks
+
+        chunks.sort(function (c0, c1) {
+
+            const dif = c0.minv.block - c1.minv.block;
+            if (dif !== 0) {
+                return dif
+            } else {
+                return c0.minv.offset - c1.minv.offset
+            }
+        });
+
+        if(chunks.length <= 1) {
+            return chunks
+        }
+
+        // console.log("Before trimming " + chunks.length)
+        // for (let c of chunks) {
+        //     console.log(`${c.minv.block} ${c.minv.offset}  -  ${c.maxv.block} ${c.maxv.offset}`)
+        // }
+
+        if (lowest) {
+            chunks = chunks.filter(c => c.maxv.isGreaterThan(lowest));
+        }
+
+        // console.log("Before merging " + chunks.length)
+        // for (let c of chunks) {
+        //     console.log(`${c.minv.block} ${c.minv.offset}  -  ${c.maxv.block} ${c.maxv.offset}`)
+        // }
+
+        const mergedChunks = [];
+        let lastChunk;
+        for (let chunk of chunks) {
+
+            if (!lastChunk) {
+                mergedChunks.push(chunk);
+                lastChunk = chunk;
+            } else {
+                if (canMerge(lastChunk, chunk)) {
+                    if (chunk.maxv.isGreaterThan(lastChunk.maxv)) {
+                        lastChunk.maxv = chunk.maxv;
+                    }
+                } else {
+                    mergedChunks.push(chunk);
+                    lastChunk = chunk;
+                }
+            }
+        }
+
+        // console.log("After merging " + mergedChunks.length)
+        // for (let c of mergedChunks) {
+        //     console.log(`${c.minv.block} ${c.minv.offset}  -  ${c.maxv.block} ${c.maxv.offset}`)
+        // }
+
+        return mergedChunks
+    }
+
+
+    /**
+     * Merge 2 blocks if the file position gap between them is < 16 kb, and the total size is < ~5 mb
+     * @param chunk1
+     * @param chunk2
+     * @returns {boolean|boolean}
+     */
+    function canMerge(chunk1, chunk2) {
+        chunk2.minv.block - chunk1.maxv.block;
+        const sizeEstimate = chunk1.maxv.block - chunk1.minv.block;
+        return sizeEstimate < 5000000
+    }
+
+    // Represents a CSI Bam or Tabix index
+
+    const CSI1_MAGIC$1 = 21582659; // CSI\1
+    const CSI2_MAGIC$1 = 38359875; // CSI\2
+
+    async function parseCsiIndex(arrayBuffer, genome) {
+
+        const idx = new CSIIndex();
+        idx.parse(arrayBuffer, genome);
+        return idx
+    }
+
+    class CSIIndex {
+
+        constructor(tabix) {
+            this.tabix = true;   // Means whatever is indexed is BGZipped
+        }
+
+        parse(arrayBuffer, genome) {
+            const parser = new BinaryParser(new DataView(arrayBuffer));
+
+            const magic = parser.getInt();
+
+            if (magic !== CSI1_MAGIC$1) {
+                if (magic === CSI2_MAGIC$1) {
+                    throw Error("CSI version 2 is not supported.  Please enter an issue at https://github.com/igvteam/igv.js")
+                } else {
+                    throw Error("Not a CSI index")
+                }
+            }
+
+            this.indices = [];
+            this.blockMin = Number.MAX_SAFE_INTEGER;
+            this.lastBlockPosition = [];
+            this.sequenceIndexMap = {};
+
+            this.minShift = parser.getInt();
+            this.depth = parser.getInt();
+            const lAux = parser.getInt();
+            const seqNames = [];
+            let bmax = 0;
+
+            if (lAux >= 28) {
+                // Tabix header parameters aren't used, but they must be read to advance the pointer
+                parser.getInt();
+                parser.getInt();
+                parser.getInt();
+                parser.getInt();
+                parser.getInt();
+                parser.getInt();
+                const l_nm = parser.getInt();
+                const nameEndPos = parser.position + l_nm;
+                let i = 0;
+                while (parser.position < nameEndPos) {
+                    let seq_name = parser.getString();
+                    // Translate to "official" chr name.
+                    if (genome) {
+                        seq_name = genome.getChromosomeName(seq_name);
+                    }
+                    this.sequenceIndexMap[seq_name] = i;
+                    seqNames[i] = seq_name;
+                    i++;
+                }
+            }
+
+            const MAX_BIN = this.bin_limit() + 1;
+            const nref = parser.getInt();
+            for (let ref = 0; ref < nref; ref++) {
+                const binIndex = [];
+                const loffset = [];
+                const nbin = parser.getInt();
+                for (let b = 0; b < nbin; b++) {
+
+                    const binNumber = parser.getInt();
+                    loffset[binNumber] = parser.getVPointer();
+
+                    if (binNumber > MAX_BIN) {
+                        // This is a psuedo bin, not used but we have to consume the bytes
+                        parser.getInt(); // # of chunks for this bin
+                        parser.getVPointer();   // unmapped beg
+                        parser.getVPointer();   // unmapped end
+                        parser.getLong();
+                        parser.getLong();
+
+                    } else {
+
+                        binIndex[binNumber] = [];
+                        const nchnk = parser.getInt(); // # of chunks for this bin
+
+                        for (let i = 0; i < nchnk; i++) {
+                            const cs = parser.getVPointer();    //chunk_beg
+                            const ce = parser.getVPointer();    //chunk_end
+                            if (cs && ce) {
+                                if (cs.block < this.blockMin) {
+                                    this.blockMin = cs.block;    // Block containing first alignment
+                                }
+                                if (ce.block > bmax) {
+                                    bmax = ce.block;
+                                }
+                                binIndex[binNumber].push([cs, ce]);
+                            }
+                        }
+                    }
+                }
+
+                if (nbin > 0) {
+                    this.indices[ref] = {
+                        binIndex: binIndex,
+                        loffset: loffset
+                    };
+                }
+            }
+            this.lastBlockPosition = bmax;
+        }
+
+        get chromosomeNames() {
+            return Object.keys(this.sequenceIndexMap)
+        }
+
+        /**
+         * Fetch blocks for a particular genomic range.  This method is public so it can be unit-tested.
+         *
+         * @param refId  the sequence dictionary index of the chromosome
+         * @param min  genomic start position
+         * @param max  genomic end position
+         * @param return an array of {minv: {filePointer, offset}, {maxv: {filePointer, offset}}
+         */
+        chunksForRange(refId, min, max) {
+
+            const ba = this.indices[refId];
+            if (!ba) {
+                return []
+            } else {
+                const overlappingBins = this.reg2bins(min, max);        // List of bin #s that overlap min, max
+                if (overlappingBins.length == 0) return []
+
+                const chunks = [];
+                // Find chunks in overlapping bins.  Leaf bins (< 4681) are not pruned
+                for (let binRange of overlappingBins) {
+                    for (let bin = binRange[0]; bin <= binRange[1]; bin++) {
+                        if (ba.binIndex[bin]) {
+                            const binChunks = ba.binIndex[bin];
+                            for (let c of binChunks) {
+                                const cs = c[0];
+                                const ce = c[1];
+                                chunks.push({minv: cs, maxv: ce, bin: bin});
+                            }
+                        }
+                    }
+                }
+
+                const lowestOffset = ba.loffset[overlappingBins[0]];
+
+                return optimizeChunks(chunks, lowestOffset)
+            }
+
+        }
+
+        // reg2bins implementation adapted from GMOD/tabix-js  https://github.com/GMOD/tabix-js/blob/master/src/csi.ts
+        reg2bins(beg, end) {
+            beg -= 1; // < convert to 1-based closed
+            if (beg < 1) beg = 1;
+            if (end > 2 ** 34) end = 2 ** 34; // 17 GiB ought to be enough for anybody
+            end -= 1;
+            let l = 0;
+            let t = 0;
+            let s = this.minShift + this.depth * 3;
+            const bins = [];
+            for (; l <= this.depth; s -= 3, t += (1 << l * 3), l += 1) {
+                const b = t + (beg >> s);
+                const e = t + (end >> s);
+                //
+                // ITS NOT CLEAR WHERE THIS TEST CAME FROM,  but maxBinNumber is never set, and its not clear what it represents.
+                // if (e - b + bins.length > this.maxBinNumber)
+                //     throw new Error(
+                //         `query ${beg}-${end} is too large for current binning scheme (shift ${this.minShift}, depth ${this.depth}), try a smaller query or a coarser index binning scheme`,
+                //     )
+                //
+                bins.push([b, e]);
+            }
+            return bins
+        }
+
+
+        bin_limit() {
+            return ((1 << (this.depth + 1) * 3) - 1) / 7
+        }
+
+    }
+
+    // Represents a BAM or Tabix index.
+
+    const BAI_MAGIC$1 = 21578050;
+    const TABIX_MAGIC$1 = 21578324;
+
+
+    async function parseBamIndex(arrayBuffer, genome) {
+        const index = new BamIndex();
+        await index.parse(arrayBuffer, false, genome);
+        return index
+    }
+
+    async function parseTabixIndex(arrayBuffer, genome) {
+        const index = new BamIndex();
+        await index.parse(arrayBuffer, true, genome);
+        return index
+    }
+
+    class BamIndex {
+
+        constructor() {
+
+        }
+
+        async parse(arrayBuffer, tabix, genome) {
+
+            const indices = [];
+            let blockMin = Number.MAX_SAFE_INTEGER;
+            let blockMax = 0;
+
+            const parser = new BinaryParser(new DataView(arrayBuffer));
+            const magic = parser.getInt();
+            const sequenceIndexMap = {};
+            if (magic === BAI_MAGIC$1 || (tabix && magic === TABIX_MAGIC$1)) {
+
+                const nref = parser.getInt();
+                if (tabix) {
+                    // Tabix header parameters aren't used, but they must be read to advance the pointer
+                    parser.getInt();
+                    parser.getInt();
+                    parser.getInt();
+                    parser.getInt();
+                    parser.getInt();
+                    parser.getInt();
+                    parser.getInt();
+
+                    for (let i = 0; i < nref; i++) {
+                        let seq_name = parser.getString();
+                        // Translate to "official" chr name.
+                        if (genome) {
+                            seq_name = genome.getChromosomeName(seq_name);
+                        }
+                        sequenceIndexMap[seq_name] = i;
+                    }
+                }
+
+                // Loop through sequences
+                for (let ref = 0; ref < nref; ref++) {
+
+                    const binIndex = {};
+                    const linearIndex = [];
+                    const nbin = parser.getInt();
+
+                    for (let b = 0; b < nbin; b++) {
+                        const binNumber = parser.getInt();
+                        if (binNumber === 37450) {
+                            // This is a psuedo bin, not used but we have to consume the bytes
+                            parser.getInt(); // # of chunks for this bin
+                            parser.getVPointer();   // unmapped beg
+                            parser.getVPointer();   // unmapped end
+                            parser.getLong();
+                            parser.getLong();
+
+                        } else {
+
+                            binIndex[binNumber] = [];
+                            const nchnk = parser.getInt(); // # of chunks for this bin
+
+                            for (let i = 0; i < nchnk; i++) {
+                                const cs = parser.getVPointer();    //chunk_beg
+                                const ce = parser.getVPointer();    //chunk_end
+                                if (cs && ce) {
+                                    if (cs.block < blockMin) {
+                                        blockMin = cs.block;    // Block containing first alignment
+                                    }
+                                    if (ce.block > blockMax) {
+                                        blockMax = ce.block;
+                                    }
+                                    binIndex[binNumber].push([cs, ce]);
+                                }
+                            }
+                        }
+                    }
+
+                    const nintv = parser.getInt();
+                    for (let i = 0; i < nintv; i++) {
+                        const cs = parser.getVPointer();
+                        linearIndex.push(cs);   // Might be null
+                    }
+
+                    if (nbin > 0) {
+                        indices[ref] = {
+                            binIndex: binIndex,
+                            linearIndex: linearIndex
+                        };
+                    }
+                }
+
+                this.firstBlockPosition = blockMin;
+                this.lastBlockPosition = blockMax;
+                this.indices = indices;
+                this.sequenceIndexMap = sequenceIndexMap;
+                this.tabix = tabix;
+
+            } else {
+                throw new Error(indexURL + " is not a " + (tabix ? "tabix" : "bai") + " file")
+            }
+
+
+        }
+
+        get chromosomeNames() {
+            return Object.keys(this.sequenceIndexMap)
+        }
+
+        /**
+         * Fetch chunks for a particular genomic range.  This method is public so it can be unit-tested.
+         *
+         * @param refId  the sequence dictionary index of the chromosome
+         * @param min  genomic start position
+         * @param max  genomic end position
+         * @param return an array of objects representing chunks (file spans) {minv: {block, offset}, {maxv: {block, offset}}
+         */
+        chunksForRange(refId, min, max) {
+
+            const bam = this;
+            const ba = bam.indices[refId];
+
+            if (!ba) {
+                return []
+            } else {
+                const overlappingBins = reg2bins(min, max);        // List of bin #s that overlap min, max
+
+                //console.log("bin ranges")
+                //for(let b of overlappingBins) {
+                //    console.log(`${b[0]} - ${b[1]}`)
+                //}
+
+                const chunks = [];
+                // Find chunks in overlapping bins.  Leaf bins (< 4681) are not pruned
+                for (let binRange of overlappingBins) {
+                    for (let bin = binRange[0]; bin <= binRange[1]; bin++) {
+                        if (ba.binIndex[bin]) {
+                            const binChunks = ba.binIndex[bin];
+                            for (let c of binChunks) {
+                                const cs = c[0];
+                                const ce = c[1];
+                                chunks.push({minv: cs, maxv: ce});
+                            }
+                        }
+                    }
+                }
+
+                // Use the linear index to find minimum file position of chunks that could contain alignments in the region
+                const nintv = ba.linearIndex.length;
+
+                let lowest;
+                const minLin = Math.min(min >> 14, nintv - 1);    // i.e. min / 16384
+                const maxLin = Math.min(max >> 14, nintv - 1);
+                for (let i = minLin; i <= maxLin; i++) {
+                    const vp = ba.linearIndex[i];
+                    if (vp) {
+                        lowest = vp;       // lowest file offset that contains alignments overlapping (min, max)
+                        break
+                    }
+                }
+
+                return optimizeChunks(chunks, lowest)
+            }
+        }
+    }
+
+
+
+    /**
+     * Calculate the list of bins that overlap with region [beg, end]
+     *
+     */
+    function reg2bins(beg, end) {
+        const list = [];
+        if (end >= 1 << 29) end = 1 << 29;
+        --end;
+        list.push([0, 0]);
+        list.push([1 + (beg >> 26), 1 + (end >> 26)]);
+        list.push([9 + (beg >> 23), 9 + (end >> 23)]);
+        list.push([73 + (beg >> 20), 73 + (end >> 20)]);
+        list.push([585 + (beg >> 17), 585 + (end >> 17)]);
+        list.push([4681 + (beg >> 14), 4681 + (end >> 14)]);
+
+        // for (k = 1 + (beg >> 26); k <= 1 + (end >> 26); ++k) list.push(k);
+        // for (k = 9 + (beg >> 23); k <= 9 + (end >> 23); ++k) list.push(k);
+        // for (k = 73 + (beg >> 20); k <= 73 + (end >> 20); ++k) list.push(k);
+        // for (k = 585 + (beg >> 17); k <= 585 + (end >> 17); ++k) list.push(k);
+        // for (k = 4681 + (beg >> 14); k <= 4681 + (end >> 14); ++k) list.push(k);
+        return list
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    async function parseTribbleIndex(arrayBuffer, genome) {
+
+        const index = new TribbleIndex();
+        index.parse(arrayBuffer, genome);
+        return index
+    }
+
+    class TribbleIndex {
+
+        constructor() {
+
+        }
+
+        async parse(arrayBuffer, genome) {
+
+            let blockMax = 0;
+            this.chrIndex = {};
+            this.lastBlockPosition = [];
+            const parser = new BinaryParser(new DataView(arrayBuffer));
+            readHeader(parser);
+
+            let nChrs = parser.getInt();
+            while (nChrs-- > 0) {
+
+                // todo -- support interval tree index, we're assuming its a linear index
+
+                let chr = parser.getString();
+                if (genome) chr = genome.getChromosomeName(chr); // Translate to canonical name
+
+                const binWidth = parser.getInt();
+                const nBins = parser.getInt();
+                const longestFeature = parser.getInt();
+                parser.getInt() > 0;
+                parser.getInt();
+
+                // note the code below accounts for > 60% of the total time to read an index
+                let pos = parser.getLong();
+                const blocks = [];
+                for (let binNumber = 0; binNumber < nBins; binNumber++) {
+                    const nextPos = parser.getLong();
+                    blocks.push({min: pos, max: nextPos}); //        {position: pos, size: size});
+                    pos = nextPos;
+                    if (nextPos > blockMax) {
+                        blockMax = nextPos;
+                    }
+                }
+                this.chrIndex[chr] = {chr: chr, blocks: blocks, longestFeature: longestFeature, binWidth: binWidth};
+            }
+
+            this.lastBlockPosition = blockMax;
+
+
+            /**
+             * Read the header .   Data here is not used in igv.js but we need to read it to advance the pointer.
+             * @param parser
+             */
+            function readHeader(parser) {
+
+                parser.getInt();     //   view._getInt32(offset += 32, true);
+                parser.getInt();
+                const version = parser.getInt();
+                parser.getString();
+                parser.getLong();
+                parser.getLong();
+                parser.getString();
+                parser.getInt();
+                if (version >= 3) {
+                    let nProperties = parser.getInt();
+                    while (nProperties-- > 0) {
+                        parser.getString();
+                        parser.getString();
+                    }
+                }
+            }
+        }
+
+        get chromosomeNames() {
+            return Object.keys(this.chrIndex)
+        }
+
+
+        /**
+         * Fetch blocks for a particular genomic range.
+         *
+         * @param queryChr the sequence dictionary index of the chromosome
+         * @param min  genomic start position
+         * @param max  genomic end position
+         */
+        chunksForRange(queryChr, min, max) { //function (refId, min, max) {
+            const chrIdx = this.chrIndex[queryChr];
+
+            if (chrIdx) {
+                const blocks = chrIdx.blocks;
+                const longestFeature = chrIdx.longestFeature;
+                const binWidth = chrIdx.binWidth;
+                const adjustedPosition = Math.max(min - longestFeature, 0);
+                const startBinNumber = Math.floor(adjustedPosition / binWidth);
+
+                if (startBinNumber >= blocks.length) // are we off the end of the bin list, so return nothing
+                    return []
+                else {
+                    const endBinNumber = Math.min(Math.floor((max - 1) / binWidth), blocks.length - 1);
+
+                    // By definition blocks are adjacent in the file for the liner index.  Combine them into one merged block
+                    const startPos = blocks[startBinNumber].min;
+                    const endPos = blocks[endBinNumber].max;
+                    const size = endPos - startPos;
+                    if (size === 0) {
+                        return []
+                    } else {
+                        const mergedBlock = {minv: {block: startPos, offset: 0}, maxv: {block: endPos, offset: 0}};
+                        return [mergedBlock]
+                    }
+                }
+            } else {
+                return undefined
+            }
+        }
+    }
+
+    const CSI1_MAGIC = 21582659; // CSI\1
+    const CSI2_MAGIC = 38359875; // CSI\2
+    const BAI_MAGIC = 21578050;
+    const TABIX_MAGIC = 21578324;
+    const TRIBBLE_MAGIC = 1480870228;   //  byte[]{'T', 'I', 'D', 'X'};
+
+    /**
+     * @param indexURL
+     * @param config
+     * @param tabix
+     *
+     */
+    async function loadIndex(indexURL, config, genome) {
+
+        let arrayBuffer = await igvxhr.loadArrayBuffer(indexURL, buildOptions(config));
+        let dv = new DataView(arrayBuffer);
+
+        // Some indexs are bgzipped, specifically tabix, and csi.  Bam (bai) are not.  Tribble is usually not.
+        // Check first 2 bytes of file for gzip magic number, and inflate if neccessary
+        if (dv.getUint8(0) === 0x1f && dv.getUint8(1) === 0x8b) {    // gzipped
+            const inflate = unbgzf(arrayBuffer);
+            arrayBuffer = inflate.buffer;
+            dv = new DataView(arrayBuffer);
+        }
+
+        const magic = dv.getInt32(0, true);
+        switch (magic) {
+            case BAI_MAGIC:
+                return parseBamIndex(arrayBuffer, genome)
+            case TABIX_MAGIC:
+                return parseTabixIndex(arrayBuffer, genome)
+            case CSI1_MAGIC:
+                return parseCsiIndex(arrayBuffer, genome)
+            case TRIBBLE_MAGIC:
+                return parseTribbleIndex(arrayBuffer, genome)
+            case CSI2_MAGIC:
+                throw Error("CSI version 2 is not supported.")
+            default:
+                throw Error(`Unrecognized index type: ${indexURL}`)
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2017 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    function getDataWrapper(data) {
+
+        if (typeof (data) == 'string' || data instanceof String) {
+            return new StringDataWrapper(data)
+        } else {
+            return new ByteArrayDataWrapper(data)
+        }
+    }
+
+
+    // Data might be a string, or an UInt8Array
+    class StringDataWrapper {
+
+        constructor(string) {
+            this.data = string;
+            this.ptr = 0;
+        }
+
+        nextLine() {
+            var start = this.ptr,
+                idx = this.data.indexOf('\n', start),
+                data = this.data;
+
+            if (idx > 0) {
+                this.ptr = idx + 1;   // Advance pointer for next line
+                if (idx > start && data.charAt(idx - 1) === '\r') {
+                    // Trim CR manually in CR/LF sequence
+                    return data.substring(start, idx - 1)
+                }
+                return data.substring(start, idx)
+            } else {
+                var length = data.length;
+                this.ptr = length;
+                // Return undefined only at the very end of the data
+                return (start >= length) ? undefined : data.substring(start)
+            }
+        }
+    }
+
+    class ByteArrayDataWrapper {
+
+        constructor(array) {
+            this.data = array;
+            this.length = this.data.length;
+            this.ptr = 0;
+        }
+
+        nextLine() {
+
+            var c, result;
+            result = "";
+
+            if (this.ptr >= this.length) return undefined
+
+            for (var i = this.ptr; i < this.length; i++) {
+                c = String.fromCharCode(this.data[i]);
+                if (c === '\r') continue
+                if (c === '\n') break
+                result = result + c;
+            }
+
+            this.ptr = i + 1;
+            return result
+        }
+
+    }
+
+    /**
+     * Class to iterate line-by-line over a BGZipped text file.  This class is useful for iterating from the start of
+     * the file.  Not useful for indexed queries.
+     */
+
+    class BGZLineReader {
+
+        constructor(config) {
+            this.config = config;
+            this.filePtr = 0;
+            this.bufferPtr = 0;
+            this.buffer;
+        }
+
+        async nextLine() {
+
+            let result = undefined;
+
+            try {
+                while (true) {
+                    const length = this.buffer ? this.buffer.length : 0;
+                    while (this.bufferPtr < length) {
+                        const c = String.fromCharCode(this.buffer[this.bufferPtr++]);
+                        if (c === '\r') continue
+                        if (c === '\n') {
+                            return result
+                        }
+                        result = result ? result + c : c;
+                    }
+                    if (this.eof) {
+                        return result
+                    } else {
+                        await this.readNextBlock();
+                    }
+                }
+            } catch (e) {
+                console.warn(e);
+                this.eof = true;
+                return result
+            }
+        }
+
+        async readNextBlock() {
+
+            const bsizeOptions = buildOptions(this.config, {
+                range: {
+                    start: this.filePtr,
+                    size: 26
+                }
+            });
+            const abuffer = await igvxhr.loadArrayBuffer(this.config.url, bsizeOptions);
+            const bufferSize = bgzBlockSize$1(abuffer);
+
+            if (bufferSize === 0) {
+                this.eof = true;
+                this.buffer = undefined;
+            } else {
+
+                const options = buildOptions(this.config, {range: {start: this.filePtr, size: bufferSize}});
+                const data = await igvxhr.loadArrayBuffer(this.config.url, options);
+                if (data.byteLength < bufferSize) {
+                    this.eof = true; // Assumption
+                }
+                this.buffer = unbgzf(data);
+                if(this.buffer.byteLength == 0) {
+                    this.eof = true;
+                }
+                this.bufferPtr = 0;
+                this.filePtr += data.byteLength; //data.byteLength;
+            }
+        }
+
+    }
+
+    function concatenateArrayBuffers(arrayBuffers) {
+
+        if (arrayBuffers.length === 1) {
+            return arrayBuffers[0]
+        }
+
+        let len = 0;
+        for (const b of arrayBuffers) {
+            len += b.byteLength;
+        }
+        const c = new Uint8Array(len);
+        let offset = 0;
+        for (const b of arrayBuffers) {
+            c.set(new Uint8Array(b), offset);
+            offset += b.byteLength;
+        }
+        return c.buffer
+    }
+
+    /**
+     * Return the block size for the data buffer.
+     * @param data
+     * @returns {number}
+     */
+    const bgzBlockSize = (data) => {
+        const ba = ArrayBuffer.isView(data) ? data : new Uint8Array(data);
+        const bsize = (ba[17] << 8 | ba[16]) + 1;
+        return bsize
+    };
+
+    class BGZBlockLoader {
+
+        constructor(config) {
+            this.config = config;
+            this.cacheBlocks = false != config.cacheBlocks;   // Default to true
+            this.cache = undefined;
+        }
+
+        /**
+         * Return inflated data from startBlock through endBlock as an UInt8Array
+         *
+         * @param minv minimum virtual pointer  {block, offset}
+         * @param maxv maximum virtual pointer  {block, offset}
+         * @returns {Promise<Uint8Array>}
+         */
+        async getData(minv, maxv) {
+
+            const startBlock = minv.block;
+            const endBlock = maxv.block;
+            const skipEnd = maxv.offset === 0;
+
+            const blocks = await this.getInflatedBlocks(startBlock, endBlock, skipEnd);
+            if (blocks.length === 1) {
+                return blocks[0]
+            }
+
+            let len = 0;
+            for (const b of blocks) {
+                len += b.byteLength;
+            }
+            const c = new Uint8Array(len);
+            let offset = 0;
+            for (const b of blocks) {
+                c.set(b, offset);
+                offset += b.byteLength;
+            }
+            return c
+        }
+
+        /**
+         * Return the inflated data for the specified blocks as an array of Uint8Arrays.  This method is public so
+         * it can be unit tested. *
+         * @param startBlock
+         * @param endBlock
+         * @returns {Promise<*[Uint8Array]>}
+         */
+        async getInflatedBlocks(startBlock, endBlock, skipEnd) {
+
+            if (!this.cacheBlocks) {
+                const buffer = await this.loadBLockData(startBlock, endBlock, {skipEnd});
+                return inflateBlocks(buffer)
+            } else {
+
+                const c = this.cache;
+                if (c &&
+                    c.startBlock <= startBlock &&
+                    (c.endBlock >= endBlock || skipEnd && c.nextEndBlock === endBlock)) {
+                    //console.log("Complete overlap")
+                    const startOffset = startBlock - c.startBlock;
+                    const endOffset = endBlock - c.startBlock;
+                    return inflateBlocks(c.buffer, startOffset, endOffset)
+                    // Don't update cache, still valid
+                } else {
+
+                    let buffer;
+                    if (!c || (c.startBlock > endBlock || c.endBlock < startBlock)) {
+                        // no overlap with cache
+                        buffer = await this.loadBLockData(startBlock, endBlock, {skipEnd});
+                    } else {
+
+                        //console.log("Some overlap")
+                        const arrayBuffers = [];
+
+                        // Load blocks preceding cache start, if any
+                        if (startBlock < c.startBlock) {
+                            // load first blocks
+                            const startBuffer = await this.loadBLockData(startBlock, c.startBlock, {skipEnd: true});
+                            arrayBuffers.push(startBuffer);
+                        }
+
+                        // Slice cached buffer as needed
+                        let cachedBuffer;
+                        if (startBlock <= c.startBlock && endBlock >= c.endBlock) {
+                            cachedBuffer = c.buffer;
+                        } else {
+                            const start = Math.max(0, startBlock - c.startBlock);
+                            let end;
+                            if (endBlock >= c.endBlock) {
+                                end = c.buffer.byteLength;
+                            } else {
+                                // We need to find the byte position of the end of "endBlock"
+                                const boundaries = findBlockBoundaries(c.buffer);
+                                for (let i = 0; i < boundaries.length - 1; i++) {
+                                    if (c.startBlock + boundaries[i] === endBlock) {
+                                        end = boundaries[i + 1];
+                                        break
+                                    }
+                                }
+                                // Do something if end not found
+                            }
+                            cachedBuffer = c.buffer.slice(start, end);
+                        }
+                        arrayBuffers.push(cachedBuffer);
+
+                        // Load end blocks, if any
+                        if (endBlock > c.endBlock) {
+                            const endBuffer = await this.loadBLockData(c.endBlock, endBlock, {skipStart: true, skipEnd});
+                            arrayBuffers.push(endBuffer);
+                        }
+
+                        buffer = concatenateArrayBuffers(arrayBuffers);
+                    }
+
+                    // If skipEnd === true we need to find boundary of last block in cache
+                    let nextEndBlock = endBlock;
+                    if(skipEnd) {
+                        const boundaries = findBlockBoundaries(buffer);
+                        endBlock = boundaries[boundaries.length - 1];
+                    }
+
+                    this.cache = {startBlock, endBlock, nextEndBlock, buffer};
+                    return inflateBlocks(buffer)
+                }
+            }
+        }
+
+        async loadBLockData(startBlock, endBlock, options) {
+
+            const config = this.config;
+            const skipStart = options && options.skipStart;
+            const skipEnd = options && options.skipEnd;
+
+            // Get size of last block if not skipped
+            let lastBlockSize = 0;
+            if (!skipEnd) {
+                const bsizeOptions = buildOptions(config, {range: {start: endBlock, size: 26}});
+                const abuffer = await igvxhr.loadArrayBuffer(config.url, bsizeOptions);
+                lastBlockSize = bgzBlockSize(abuffer);
+            }
+
+            if (skipStart) {
+                const bsizeOptions = buildOptions(config, {range: {start: startBlock, size: 26}});
+                const abuffer = await igvxhr.loadArrayBuffer(config.url, bsizeOptions);
+                startBlock += bgzBlockSize(abuffer);
+            }
+
+            // Load data for all blocks
+            const loadOptions = buildOptions(config, {
+                range: {
+                    start: startBlock,
+                    size: endBlock + lastBlockSize - startBlock
+                }
+            });
+
+            //console.log(`${this.config.name}  Loaded ${startBlock} - ${endBlock + lastBlockSize}   (${(endBlock + lastBlockSize - startBlock) / 1000} kb)`)
+
+            return igvxhr.loadArrayBuffer(config.url, loadOptions)
+        }
+    }
+
+    function findBlockBoundaries(arrayBuffer) {
+
+        const byteLengh = arrayBuffer.byteLength;
+        let offset = 0;
+        const blockBoundaries = [0];
+        while (offset < byteLengh) {
+            //console.log("Cache block "  + offset)
+            const ba = new Uint8Array(arrayBuffer, offset);
+            const bsize = (ba[17] << 8 | ba[16]) + 1;
+            offset += bsize;
+            if (offset < byteLengh) {
+                blockBoundaries.push(offset);
+            }
+        }
+        return blockBoundaries
+    }
+
+
+    /**
+     * Inflate compressed blocks within the data buffer*
+     * @param data
+     * @param startBlock - optional file location for start block.  Default == 0
+     * @param endBlock - optional file location for last block to decompress.
+     * @returns {*[]}
+     */
+    function inflateBlocks(data, startBlock, endBlock) {
+
+        startBlock = startBlock || 0;
+
+        const oBlockList = [];
+        let ptr = startBlock;
+
+        const lim = data.byteLength - 18;
+        while (ptr < lim) {
+            try {
+                //console.log(113873 + ptr)
+                const header = new Uint8Array(data, ptr, 18);
+                const xlen = (header[11] << 8) | (header[10]);
+                const bsize = ((header[17] << 8) | (header[16]));  // Total block size, including header, minus 1
+                const start = 12 + xlen + ptr;    // Start of CDATA
+                const bytesLeft = data.byteLength - start;
+                const cDataSize = bsize - xlen - 18;
+
+                if (bytesLeft < cDataSize || cDataSize <= 0) {
+                    // This is unexpected.  Throw error?
+                    break
+                }
+
+                const cdata = new Uint8Array(data, start, cDataSize);
+                const unc = inflateRaw_1(cdata);
+                oBlockList.push(unc);
+
+                if (endBlock === ptr) {
+                    break
+                } else {
+                    // Advance to next block
+                    ptr += bsize + 1;
+                }
+
+            } catch (e) {
+                console.error(e);
+                break
+            }
+        }
+        return oBlockList
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    /**
+     * Reader for "bed like" files (tab delimited files with 1 feature per line: bed, gff, vcf, etc)
+     *
+     * @param config
+     * @constructor
+     */
+    class FeatureFileReader {
+
+        constructor(config, genome) {
+
+            var uriParts;
+
+            this.config = config || {};
+            this.genome = genome;
+            this.indexURL = config.indexURL;
+            this.indexed = config.indexed || this.indexURL !== undefined;
+            this.queryable = this.indexed;
+
+            if (isFile(this.config.url)) {
+                this.filename = this.config.url.name;
+            } else if (isDataURL(this.config.url)) {
+                this.indexed = false;  // by definition
+                this.dataURI = config.url;
+            } else {
+                uriParts = parseUri(this.config.url);
+                this.filename = config.filename || uriParts.file;
+            }
+
+            this.parser = this.getParser(this.config);
+
+            if (this.config.format === "vcf" && !this.config.indexURL) {
+                console.warn("Warning: index file not specified.  The entire vcf file will be loaded.");
+            }
+
+        }
+
+        async defaultVisibilityWindow() {
+            if (this.config.indexURL) {
+                const index = await this.getIndex();
+                if (index && index.lastBlockPosition) {
+                    let gl = 0;
+                    const s = 10000;
+                    for (let c of index.chromosomeNames) {
+                        const chromosome = this.genome.getChromosome(c);
+                        if (chromosome) {
+                            gl += chromosome.bpLength;
+                        }
+                    }
+                    return Math.round((gl / index.lastBlockPosition) * s)
+                }
+            }
+        }
+
+        /**
+         * Return a promise to load features for the genomic interval
+         * @param chr
+         * @param start
+         * @param end
+         */
+        async readFeatures(chr, start, end) {
+
+            const index = await this.getIndex();
+            if (index) {
+                this.indexed = true;
+                return this.loadFeaturesWithIndex(chr, start, end)
+            } else if (this.dataURI) {
+                this.indexed = false;
+                return this.loadFeaturesFromDataURI()
+            } else {
+                this.indexed = false;
+                return this.loadFeaturesNoIndex()
+            }
+
+        }
+
+        async readHeader() {
+
+            if (this.dataURI) {
+                await this.loadFeaturesFromDataURI(this.dataURI);
+                return this.header
+            } else {
+
+                if (this.config.indexURL) {
+                    const index = await this.getIndex();
+                    if (!index) {
+                        // Note - it should be impossible to get here
+                        throw new Error("Unable to load index: " + this.config.indexURL)
+                    }
+
+                    let dataWrapper;
+                    if (index.tabix) {
+                        this._blockLoader = new BGZBlockLoader(this.config);
+                        dataWrapper = new BGZLineReader(this.config);
+                    } else {
+                        // Tribble
+                        const maxSize = Object.values(index.chrIndex)
+                            .flatMap(chr => chr.blocks)
+                            .map(block => block.max)
+                            .reduce((previous, current) =>
+                                Math.min(previous, current), Number.MAX_SAFE_INTEGER);
+
+                        const options = buildOptions(this.config, {bgz: index.tabix, range: {start: 0, size: maxSize}});
+                        const data = await igvxhr.loadString(this.config.url, options);
+                        dataWrapper = getDataWrapper(data);
+                    }
+
+
+                    this.header = await this.parser.parseHeader(dataWrapper);  // Cache header, might be needed to parse features
+                    return this.header
+
+                } else {
+                    // If this is a non-indexed file we will load all features in advance
+                    const options = buildOptions(this.config);
+                    const data = await igvxhr.loadString(this.config.url, options);
+                    let dataWrapper = getDataWrapper(data);
+                    this.header = await this.parser.parseHeader(dataWrapper);
+
+                    // Reset data wrapper and parse features
+                    dataWrapper = getDataWrapper(data);
+                    this.features = await this.parser.parseFeatures(dataWrapper);   // cache features
+                    return this.header
+                }
+            }
+        }
+
+
+        getParser(config) {
+
+            switch (config.format) {
+                case "vcf":
+                    return new VcfParser(config)
+                case "seg" :
+                    return new SegParser("seg")
+                case "mut":
+                    return new SegParser("mut")
+                case "maf":
+                    return new SegParser("maf")
+                case "gwas" :
+                    return new GWASParser(config)
+                case "aed" :
+                    return new AEDParser(config)
+                default:
+                    return new FeatureParser(config)
+            }
+        }
+
+        async loadFeaturesNoIndex() {
+
+            if (this.features) {
+                // An optimization hack for non-indexed files, features are temporarily cached when header is read.
+                const tmp = this.features;
+                delete this.features;
+                return tmp
+            } else {
+                const options = buildOptions(this.config);    // Add oauth token, if any
+                const data = await igvxhr.loadString(this.config.url, options);
+                if (!this.header) {
+                    const dataWrapper = getDataWrapper(data);
+                    this.header = await this.parser.parseHeader(dataWrapper);
+                }
+                const dataWrapper = getDataWrapper(data);
+                const features = await this.parser.parseFeatures(dataWrapper);   // <= PARSING DONE HERE
+                return features
+            }
+        }
+
+        async loadFeaturesWithIndex(chr, start, end) {
+
+            // insure that header has been loaded -- tabix _blockLoader is initialized as side effect
+            if(!this.dataURI && !this.header) {
+                await this.readHeader();
+            }
+
+            //console.log("Using index"
+            const config = this.config;
+            const parser = this.parser;
+            const tabix = this.index.tabix;
+            const refId = tabix ? this.index.sequenceIndexMap[chr] : chr;
+            if (refId === undefined) {
+                return []
+            }
+
+            const genome = this.genome;
+            const chunks = this.index.chunksForRange(refId, start, end);
+            if (!chunks || chunks.length === 0) {
+                return []
+            } else {
+                const allFeatures = [];
+                for (let chunk of chunks) {
+
+                    let inflated;
+                    if (tabix) {
+                        inflated = await this._blockLoader.getData(chunk.minv, chunk.maxv);
+                    } else {
+                        const options = buildOptions(config, {
+                            range: {
+                                start: chunk.minv.block,
+                                size: chunk.maxv.block - chunk.minv.block + 1
+                            }
+                        });
+                        inflated = await igvxhr.loadString(config.url, options);
+                    }
+
+                    const slicedData = chunk.minv.offset ? inflated.slice(chunk.minv.offset) : inflated;
+                    const dataWrapper = getDataWrapper(slicedData);
+                    let slicedFeatures = await parser.parseFeatures(dataWrapper);
+
+                    // Filter psuedo-features (e.g. created mates for VCF SV records)
+                    slicedFeatures = slicedFeatures.filter(f => f._f === undefined);
+
+                    // Filter features not in requested range.
+                    let inInterval = false;
+                    for (let i = 0; i < slicedFeatures.length; i++) {
+                        const f = slicedFeatures[i];
+
+                        const canonicalChromosome = genome ? genome.getChromosomeName(f.chr) : f.chr;
+                        if (canonicalChromosome !== chr) {
+                            if (allFeatures.length === 0) {
+                                continue  //adjacent chr to the left
+                            } else {
+                                break //adjacent chr to the right
+                            }
+                        }
+                        if (f.start > end) {
+                            allFeatures.push(f);  // First feature beyond interval
+                            break
+                        }
+                        if (f.end >= start && f.start <= end) {
+                            if (!inInterval) {
+                                inInterval = true;
+                                if (i > 0) {
+                                    allFeatures.push(slicedFeatures[i - 1]);
+                                }
+                            }
+                            allFeatures.push(f);
+                        }
+                    }
+
+                }
+                allFeatures.sort(function (a, b) {
+                    return a.start - b.start
+                });
+
+                return allFeatures
+            }
+        }
+
+        async getIndex() {
+            if (this.index) {
+                return this.index
+            } else if (this.config.indexURL) {
+                this.index = await this.loadIndex();
+                return this.index
+            }
+        }
+
+        /**
+         * Return a Promise for the async loaded index
+         */
+        async loadIndex() {
+            const indexURL = this.config.indexURL;
+            return loadIndex(indexURL, this.config, this.genome)
+        }
+
+        async loadFeaturesFromDataURI() {
+
+            if (this.features) {
+                // An optimization hack for non-indexed files, features are temporarily cached when header is read.
+                const tmp = this.features;
+                delete this.features;
+                return tmp
+            } else {
+                const plain = decodeDataURI$1(this.dataURI);
+                let dataWrapper = getDataWrapper(plain);
+                this.header = await this.parser.parseHeader(dataWrapper);
+                if (this.header instanceof String && this.header.startsWith("##gff-version 3")) {
+                    this.format = 'gff3';
+                }
+
+                dataWrapper = getDataWrapper(plain);
+                this.features = await this.parser.parseFeatures(dataWrapper);
+                return this.features
+            }
+        }
+
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016 University of California San Diego
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const isString$1 = isString$2;
+
+
+    class CustomServiceReader {
+        constructor(config) {
+            this.config = config;
+        }
+
+        async readFeatures(chr, start, end) {
+
+            let url;
+            if (typeof this.config.url === 'function') {
+                url = this.config.url({chr, start, end});
+            } else {
+                url = this.config.url
+                    .replace("$CHR", chr)
+                    .replace("$START", start)
+                    .replace("$END", end);
+            }
+
+            let config = Object.assign({}, this.config);
+            if (this.config.body !== undefined) {
+                if (typeof this.config.body === 'function') {
+                    config.body = this.config.body({chr, start, end});
+                } else {
+                    config.body =
+                        this.config.body
+                            .replace("$CHR", chr)
+                            .replace("$START", start)
+                            .replace("$END", end);
+                }
+            }
+
+
+            let features;
+            const data = await igvxhr.load(url, config);
+            if (data) {
+                if (typeof this.config.parser === "function") {
+                    features = this.config.parser(data);
+                } else if (isString$1(data)) {
+                    features = JSON.parse(data);
+                } else {
+                    features = data;
+                }
+            }
+            if (this.config.mappings) {
+                let mappingKeys = Object.keys(this.config.mappings);
+                for (let f of features) {
+                    for (let key of mappingKeys) {
+                        f[key] = f[this.config.mappings[key]];
+                    }
+                }
+            }
+            return features
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2017 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const UCSCServiceReader = function (config, genome) {
+        this.config = config;
+        this.genome = genome;
+        this.expandQueryInterval = false;
+    };
+
+    UCSCServiceReader.prototype.readFeatures = function (chr, start, end) {
+
+        const s = Math.max(0, Math.floor(start));
+        let e = Math.ceil(end);
+
+        if (this.genome) {
+            const c = this.genome.getChromosome(chr);
+            if (c && e > c.bpLength) {
+                e = c.bpLength;
+            }
+        }
+
+
+        const url = this.config.url + '?db=' + this.config.db + '&table=' + this.config.tableName + '&chr=' + chr + '&start=' + s + '&end=' + e;
+
+        return igvxhr.loadJson(url, this.config)
+            .then(function (data) {
+                if (data) {
+                    data.forEach(function (sample) {
+                        if (sample.hasOwnProperty('exonStarts') &&
+                            sample.hasOwnProperty('exonEnds') &&
+                            sample.hasOwnProperty('exonCount') &&
+                            sample.hasOwnProperty('cdsStart') &&
+                            sample.hasOwnProperty('cdsEnd')) {
+                            addExons(sample);
+                        }
+                    });
+                    return data
+                } else {
+                    return null
+                }
+            })
+    };
+
+    function addExons(sample) {
+        var exonCount, exonStarts, exonEnds, exons, eStart, eEnd;
+        exonCount = sample['exonCount'];
+        exonStarts = sample['exonStarts'].split(',');
+        exonEnds = sample['exonEnds'].split(',');
+        exons = [];
+
+        for (var i = 0; i < exonCount; i++) {
+            eStart = parseInt(exonStarts[i]);
+            eEnd = parseInt(exonEnds[i]);
+            var exon = {start: eStart, end: eEnd};
+
+            if (sample.cdsStart > eEnd || sample.cdsEnd < sample.cdsStart) exon.utr = true;   // Entire exon is UTR
+            if (sample.cdsStart >= eStart && sample.cdsStart <= eEnd) exon.cdStart = sample.cdsStart;
+            if (sample.cdsEnd >= eStart && sample.cdsEnd <= eEnd) exon.cdEnd = sample.cdsEnd;
+
+            exons.push(exon);
+        }
+
+        sample.exons = exons;
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2021 University of California San Diego
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const gffNameFields = ["Name", "gene_name", "gene", "gene_id", "alias", "locus", "name"];
+
+    class GFFHelper {
+
+        constructor(options) {
+            this.format = options.format;
+            this.nameField = options.nameField;
+            this.filterTypes = options.filterTypes === undefined ?
+                new Set(['chromosome']) :
+                new Set(options.filterTypes);
+        }
+
+        combineFeatures(features, genomicInterval) {
+
+            let combinedFeatures;
+
+            const filterTypes = this.filterTypes;
+            features = features.filter(f => filterTypes === undefined || !filterTypes.has(f.type));
+
+            if ("gff3" === this.format) {
+                const tmp = this.combineFeaturesById(features);
+                combinedFeatures = this.combineFeaturesByType(tmp);
+            } else {
+                combinedFeatures = this.combineFeaturesByType(features);
+            }
+            combinedFeatures.sort(function (a, b) {
+                return a.start - b.start
+            });
+            this.numberExons(combinedFeatures, genomicInterval);
+            this.nameFeatures(combinedFeatures);
+            return combinedFeatures
+        }
+
+        /**
+         * Combine multiple non-transcript model features with the same ID on the same chromosome into a single feature.
+         * Features that are part of the transcript model (e.g. exon, mRNA, etc) are combined later.
+         *
+         * @param features
+         * @returns {[]}
+         */
+        combineFeaturesById(features) {
+
+            const chrIdMap = new Map();
+            const combinedFeatures = [];
+
+            for (let f of features) {
+                if (isTranscriptPart(f.type) || isTranscript(f.type) || !f.id) {
+                    combinedFeatures.push(f);
+                } else {
+                    let idMap = chrIdMap.get(f.chr);
+                    if (!idMap) {
+                        idMap = new Map();
+                        chrIdMap.set(f.chr, idMap);
+                    }
+
+                    let featureArray = idMap.get(f.id);
+                    if (featureArray) {
+                        featureArray.push(f);
+                    } else {
+                        idMap.set(f.id, [f]);
+                    }
+                }
+            }
+
+            for (let idMap of chrIdMap.values()) {
+                for (let featureArray of idMap.values()) {
+                    if (featureArray.length > 1) {
+                        // Use the first feature as prototypical (for column 9 attributes), and adjust start/end
+                        // Parts are represented as "exons", as that is how they are presented visually
+                        const cf = featureArray[0];
+                        cf.exons = [];
+                        for (let f of featureArray) {
+                            cf.start = Math.min(cf.start, f.start);
+                            cf.end = Math.max(cf.end, f.end);
+                            cf.exons.push({
+                                start: f.start,
+                                end: f.end
+                            });
+                        }
+                        combinedFeatures.push(cf);
+                    } else {
+                        combinedFeatures.push(featureArray[0]);
+                    }
+                }
+            }
+
+            return combinedFeatures
+        }
+
+        combineFeaturesByType(features) {
+
+            // Build dictionary of genes
+            const genes = features.filter(f => "gene" === f.type || f.type.endsWith("_gene"));
+            const geneMap = Object.create(null);
+            for (let g of genes) {
+                geneMap[g.id] = g;
+            }
+
+            // 1. Build dictionary of transcripts
+            const transcripts = Object.create(null);
+            const combinedFeatures = [];
+            const consumedFeatures = new Set();
+            const filterTypes = this.filterTypes;
+
+            features = features.filter(f => filterTypes === undefined || !filterTypes.has(f.type));
+
+            for (let f of features) {
+
+                if (f.type === "biological_region") {
+                    console.log();
+                }
+
+                if (isTranscript(f.type)) {
+                    const transcriptId = f.id; // getAttribute(f.attributeString, "transcript_id", /\s+/);
+                    if (undefined !== transcriptId) {
+                        const gffTranscript = new GFFTranscript(f);
+                        transcripts[transcriptId] = gffTranscript;
+                        combinedFeatures.push(gffTranscript);
+                        consumedFeatures.add(f);
+                        const g = geneMap[f.parent];
+                        if (g) {
+                            gffTranscript.geneObject = g;
+                            consumedFeatures.add(g);
+                        }
+                    }
+                }
+            }
+
+            // Add exons and transcript parts
+            for (let f of features) {
+                if (isTranscriptPart(f.type)) {
+                    const parents = getParents(f);
+                    if (parents) {
+                        for (let id of parents) {
+
+                            let transcript = transcripts[id];
+                            if (!transcript && this.format === "gtf") {
+                                // GTF does not require explicit transcript record, start one with this feature.
+                                const psuedoTranscript = Object.assign({}, f);
+                                psuedoTranscript.type = "transcript";
+                                transcript = new GFFTranscript(psuedoTranscript);
+                                transcripts[id] = transcript;
+                                combinedFeatures.push(transcript);
+                            }
+                            if (transcript !== undefined) {
+
+                                if (isExon(f.type)) {
+                                    if (parents.length > 1) {
+                                        // Make a copy as exon can be modified differently by CDS, etc, for each transcript
+                                        const e2 = new GFFFeature(f);
+                                        transcript.addExon(e2);
+                                    } else {
+                                        transcript.addExon(f);
+                                    }
+                                } else {
+                                    transcript.addPart(f);
+                                }
+                                consumedFeatures.add(f);
+                            }
+                        }
+                    }
+                }
+            }
+
+            // Finish transcripts
+            combinedFeatures.forEach(function (f) {
+                if (typeof f.finish === "function") {
+                    f.finish();
+                }
+            });
+
+            // Add other features
+            const others = features.filter(f => !consumedFeatures.has(f));
+            for (let f of others) {
+                combinedFeatures.push(f);
+            }
+
+            return combinedFeatures
+
+            function getParents(f) {
+                if (f.parent && f.parent.trim() !== "") {
+                    return f.parent.trim().split(",")
+                } else {
+                    return null
+                }
+            }
+        }
+
+        numberExons(features, genomicInterval) {
+
+            for (let f of features) {
+                if (f.exons &&
+                    (!genomicInterval ||
+                        (f.end <= genomicInterval.end && f.start > genomicInterval.start))) {
+                    for (let i = 0; i < f.exons.length; i++) {
+                        const exon = f.exons[i];
+                        exon.number = f.strand === "-" ? f.exons.length - i : i + 1;
+                    }
+                }
+            }
+        }
+
+        nameFeatures(features) {
+            // Find name (label) property
+            for (let f of features) {
+                if (f.attributeString) {
+                    const delim = ('gff3' === this.format) ? '=' : ' ';
+                    const attributes = parseAttributeString(f.attributeString, delim);
+                    const attributesMap = new Map(attributes);
+                    if (this.nameField) {
+                        f.name = attributesMap.get(this.nameField);
+                    } else {
+                        for (let nameField of gffNameFields) {
+                            if (attributesMap.has(nameField)) {
+                                f.name = attributesMap.get(nameField);
+                                break
+                            }
+                        }
+                    }
+                }
+            }
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2015 UC San Diego
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const GtexReader = function (config) {
+
+        this.config = config;
+        this.url = config.url;
+        this.tissueId = config.tissueSiteDetailId;
+        this.indexed = true;
+        this.datasetId = config.datasetId || "gtex_v8";
+    };
+
+    GtexReader.prototype.readFeatures = async function (chr, bpStart, bpEnd) {
+
+
+        let self = this,
+            queryChr = chr.startsWith("chr") ? chr : "chr" + chr,
+            queryStart = Math.floor(bpStart),
+            queryEnd = Math.ceil(bpEnd),
+            datasetId = this.datasetId,
+            queryURL = this.url + "?chromosome=" + queryChr + "&start=" + queryStart + "&end=" + queryEnd +
+                "&tissueSiteDetailId=" + this.tissueId + "&datasetId=" + datasetId;
+
+        const json = await igvxhr.loadJson(queryURL, {
+            withCredentials: self.config.withCredentials
+        });
+        if (json && json.singleTissueEqtl) {
+            //variants = json.variants;
+            //variants.sort(function (a, b) {
+            //    return a.POS - b.POS;
+            //});
+            //source.cache = new FeatureCache(chr, queryStart, queryEnd, variants);
+
+            json.singleTissueEqtl.forEach(function (eqtl) {
+                eqtl.chr = eqtl.chromosome;
+                eqtl.position = eqtl.pos;
+                eqtl.start = eqtl.pos - 1;
+                eqtl.end = eqtl.start + 1;
+                eqtl.snp = eqtl.snpId;
+                eqtl.geneName = eqtl.geneSymbol;
+                eqtl.geneId = eqtl.gencodeId;
+
+            });
+
+            return json.singleTissueEqtl
+        } else {
+            return undefined
+        }
+    };
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    // Experimental class for fetching features from an mpg webservice.
+    // http://immvar.broadinstitute.org:3000/load_data?chromosome=&start=&end=&categories=
+
+    const ImmVarReader = function (config) {
+
+        this.config = config;
+        this.url = config.url;
+        this.cellConditionId = config.cellConditionId;
+        this.valueThreshold = config.valueThreshold ? config.valueThreshold : 5E-2;
+
+    };
+
+    ImmVarReader.prototype.readFeatures = function (queryChr, queryStart, queryEnd) {
+
+        var self = this,
+            queryURL = this.url + "?chromosome=" + queryChr + "&start=" + queryStart + "&end=" + queryEnd +
+                "&cell_condition_id=" + this.cellConditionId;
+
+        return new Promise(function (fulfill, reject) {
+            igvxhr.loadJson(queryURL, {
+                withCredentials: self.config.withCredentials
+            }).then(function (json) {
+
+                if (json) {
+                    //variants = json.variants;
+                    //variants.sort(function (a, b) {
+                    //    return a.POS - b.POS;
+                    //});
+                    //source.cache = new FeatureCache(chr, queryStart, queryEnd, variants);
+
+                    json.eqtls.forEach(function (eqtl) {
+                        eqtl.chr = eqtl.chromosome;
+                        eqtl.start = eqtl.position;
+                        eqtl.end = eqtl.position + 1;
+                    });
+
+                    fulfill(json.eqtls);
+                } else {
+                    fulfill(null);
+                }
+
+            }).catch(function (error) {
+                reject(error);
+            });
+
+        })
+    };
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const apiKey = igvxhr.apiKey;
+
+    function ga4ghGet(options) {
+        var url = options.url + "/" + options.entity + "/" + options.entityId;
+        options.headers = ga4ghHeaders();
+        return igvxhr.loadJson(url, options)      // Returns a promise
+    }
+
+    function ga4ghSearch(options) {
+
+        return new Promise(function (fulfill, reject) {
+            var results = options.results ? options.results : [],
+                url = options.url,
+                body = options.body,
+                decode = options.decode,
+                paramSeparator = "?",
+                fields = options.fields;  // Partial response
+
+
+            if (apiKey) {
+                url = url + paramSeparator + "key=" + apiKey;
+                paramSeparator = "&";
+            }
+
+            if (fields) {
+                url = url + paramSeparator + "fields=" + fields;
+            }
+
+
+            // Start the recursive load cycle.  Data is fetched in chunks, if more data is available a "nextPageToken" is returned.
+            return loadChunk()
+
+            function loadChunk(pageToken) {
+
+                if (pageToken) {
+                    body.pageToken = pageToken;
+                } else {
+                    if (body.pageToken !== undefined) delete body.pageToken;    // Remove previous page token, if any
+                }
+
+                var sendData = JSON.stringify(body);
+
+                igvxhr.loadJson(url, {
+                    sendData: sendData,
+                    contentType: "application/json",
+                    headers: ga4ghHeaders(),
+                    //    oauthToken: ga4ghToken()
+                })
+                    .then(function (json) {
+                        var nextPageToken, tmp;
+
+                        if (json) {
+
+                            tmp = decode ? decode(json) : json;
+
+                            if (tmp) {
+
+                                tmp.forEach(function (a) {
+                                    {
+                                        results.push(a);
+                                    }
+                                });
+                            }
+
+
+                            nextPageToken = json["nextPageToken"];
+
+                            if (nextPageToken) {
+                                loadChunk(nextPageToken);
+                            } else {
+                                fulfill(results);
+                            }
+                        } else {
+                            fulfill(results);
+                        }
+
+                    })
+                    .catch(function (error) {
+                        reject(error);
+                    });
+            }
+
+        })
+
+
+    }
+
+    function ga4ghHeaders() {
+        return {
+            "Cache-Control": "no-cache"
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const Ga4ghVariantReader = function (config, genome) {
+
+        this.config = config;
+        this.genome = genome;
+        this.url = config.url;
+        this.variantSetId = config.variantSetId;
+        this.callSetIds = config.callSetIds;
+        this.includeCalls = (config.includeCalls === undefined ? true : config.includeCalls);
+
+    };
+
+    // Simulate a VCF file header
+    Ga4ghVariantReader.prototype.readHeader = function () {
+
+        var self = this;
+
+
+        if (self.header) {
+            return Promise.resolve(self.header)
+        } else {
+
+            self.header = {};
+
+            if (self.includeCalls === false) {
+                return Promise.resolve(self.header)
+            } else {
+
+                var readURL = self.url + "/callsets/search";
+
+                return ga4ghSearch({
+                    url: readURL,
+                    fields: "nextPageToken,callSets(id,name)",
+                    body: {
+                        "variantSetIds": (Array.isArray(self.variantSetId) ? self.variantSetId : [self.variantSetId]),
+                        "pageSize": "10000"
+                    },
+                    decode: function (json) {
+                        // If specific callSetIds are specified filter to those
+                        if (self.callSetIds) {
+                            var callSets = [],
+                                csIdSet = new Set();
+
+                            self.callSetIds.forEach(function (csid) {
+                                csIdSet.add(csid);
+                            });
+
+                            json.callSets.forEach(function (cs) {
+                                if (csIdSet.has(cs.id)) {
+                                    callSets.push(cs);
+                                }
+                            });
+                            return callSets
+                        } else {
+                            return json.callSets
+                        }
+                    }
+                })
+                    .then(function (callSets) {
+                        self.header.callSets = callSets;
+                        return self.header
+                    })
+            }
+        }
+    };
+
+
+    Ga4ghVariantReader.prototype.readFeatures = function (chr, bpStart, bpEnd) {
+
+        const self = this;
+        const genome = this.genome;
+
+        return self.readHeader()
+
+            .then(function (header) {
+                return getChrAliasTable()
+            })
+
+            .then(function (chrAliasTable) {
+
+                var queryChr = chrAliasTable.hasOwnProperty(chr) ? chrAliasTable[chr] : chr,
+                    readURL = self.url + "/variants/search";
+
+                return ga4ghSearch({
+                    url: readURL,
+                    fields: (self.includeCalls ? undefined : "nextPageToken,variants(id,variantSetId,names,referenceName,start,end,referenceBases,alternateBases,quality,filter,info)"),
+                    body: {
+                        "variantSetIds": (Array.isArray(self.variantSetId) ? self.variantSetId : [self.variantSetId]),
+                        "callSetIds": (self.callSetIds ? self.callSetIds : undefined),
+                        "referenceName": queryChr,
+                        "start": bpStart.toString(),
+                        "end": bpEnd.toString(),
+                        "pageSize": "10000"
+                    },
+                    decode: function (json) {
+
+                        var v;
+
+                        var variants = [];
+
+                        json.variants.forEach(function (json) {
+
+                            v = createGAVariant(json);
+
+                            if (!v.isRefBlock()) {
+                                variants.push(v);
+                            }
+                        });
+
+                        return variants
+                    }
+                })
+            })
+
+
+        function getChrAliasTable() {
+
+            return new Promise(function (fulfill, reject) {
+
+                if (self.chrAliasTable) {
+                    fulfill(self.chrAliasTable);
+                } else {
+                    self.readMetadata().then(function (json) {
+
+                        self.metadata = json.metadata;
+                        self.chrAliasTable = {};
+
+                        if (json.referenceBounds && genome) {
+
+                            json.referenceBounds.forEach(function (rb) {
+                                var refName = rb.referenceName,
+                                    alias = genome.getChromosomeName(refName);
+                                self.chrAliasTable[alias] = refName;
+
+                            });
+                        }
+                        fulfill(self.chrAliasTable);
+
+                    });
+                }
+
+            })
+        }
+
+    };
+
+
+    Ga4ghVariantReader.prototype.readMetadata = function () {
+
+        return ga4ghGet({
+            url: this.url,
+            entity: "variantsets",
+            entityId: this.variantSetId
+        })
+    };
+
+    class CivicReader {
+
+        constructor(config) {
+            this.config = config;
+        }
+
+        async readFeatures(chr, start, end) {
+
+            const json = await igvxhr.loadJson(this.config.url + "/variants/?count=50000");
+            const records = json.records;
+            const features = [];
+
+            for (let record of records) {
+
+                if (record.coordinates) {
+
+                    record.id;
+                    const coordinates = record.coordinates;
+
+                    if (coordinates.chromosome) {
+                        features.push(
+                            new CivicVariant(
+                                coordinates.chromosome,
+                                coordinates.start - 1,     // UCSC 0 convention
+                                coordinates.stop,
+                                record
+                            ));
+                    }
+
+                    if (coordinates.chromosome2) {
+                        features.push(
+                            new CivicVariant(
+                                coordinates.chromosome2,
+                                coordinates.start2 - 1,     // UCSC 0 convention
+                                coordinates.stop2,
+                                record
+                            ));
+                    }
+                }
+
+            }
+            return features
+
+        }
+    }
+
+    class CivicVariant {
+
+        constructor(chr, start, end, record) {
+            this.chr = chr;
+            this.start = start;
+            this.end = end;
+            this.id = record.id;
+            this.entrezName = record.entrez_name;
+            this.name = record.name;
+            this.actionabilityScore = record.civic_actionability_score;
+
+            if (record.coordinates.reference_bases) {
+                this.refBases = record.coordinates.reference_bases;
+            }
+            if (record.coordinates.variant_bases) {
+                this.altBases = record.coordinates.variant_bases;
+            }
+            if (record.variant_types) {
+                this.variant_types = record.variant_types;
+            }
+
+            this.locationString = (this.chr + ":" +
+                numberFormatter$1(this.start + 1) + "-" +
+                numberFormatter$1(this.end));
+
+            // Color based on actionability score
+            if (this.actionabilityScore !== undefined) {
+                let alpha;
+                if (this.actionabilityScore <= 10) {
+                    alpha = 0.2;
+                } else {
+                    const v = Math.min(30, this.actionabilityScore);
+                    alpha = 0.2 + 0.8 * Math.log10((v - 10) / 2);
+                }
+                this.alpha = alpha;
+            }
+
+
+        }
+
+        popupData() {
+
+
+            const link = createLink("CIViC", "https://civicdb.org/links/variants/" + this.id);
+            this.refBases !== this.altBases &&
+                this.refBases && this.refBases.length === 1 &&
+                this.altBases && this.altBases.length === 1;
+
+
+            const pd = [link];
+            pd.push({
+                name: "Entrez",
+                value: createLink(this.entrezName, "https://ghr.nlm.nih.gov/gene/" + this.entrezName)
+            });
+            pd.push({name: "Name", value: this.name});
+
+            if (this.variant_types && this.variant_types.length > 0) {
+
+                const name = this.variant_types.length === 1 ? "Type" : "Types";
+                let typeString;
+                for (let vt of this.variant_types) {
+                    if (!typeString) typeString = vt.display_name;
+                    else typeString += ", " + vt.display_name;
+                }
+
+                pd.push({name: name, value: typeString});
+            }
+
+            pd.push({name: "Actionability", value: this.actionabilityScore});
+
+
+            pd.push({name: "Location", value: this.locationString});
+
+            return pd
+
+
+            function createLink(text, href) {
+                return "<a target='_blank' " + "href='" + href + "'>" + text + "</a>"
+            }
+
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2017 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class HtsgetReader {
+
+        constructor(config, genome) {
+            this.config = config;
+            this.genome = genome;
+            this.format = config.format ? config.format.toUpperCase() : "BAM";    // Backward compatibility
+            if (!(this.format === "BAM" || this.format === "VCF")) {
+                throw  Error(`htsget format ${config.format} is not supported`)
+            }
+        }
+
+        async readHeaderData() {
+            const url = `${getUrl(this.config)}?class=header&format=${this.format}`;
+            const ticket = await igvxhr.loadJson(url, buildOptions(this.config));
+            return await this.loadUrls(ticket.htsget.urls)
+        }
+
+        async readData(chr, start, end) {
+            const url = `${getUrl(this.config)}?format=${this.format}&referenceName=${chr}&start=${Math.floor(start)}&end=${Math.ceil(end)}`;
+            const ticket = await igvxhr.loadJson(url, buildOptions(this.config));
+            return this.loadUrls(ticket.htsget.urls)
+        }
+
+        async loadUrls(urls) {
+
+            const promiseArray = [];
+            for (let urlData of urls) {
+
+                if (urlData.url.startsWith('data:')) {
+                    // this is a data-uri
+                    promiseArray.push(Promise.resolve(dataUriToBytes(urlData.url)));
+
+                } else {
+
+                    const options = buildOptions(this.config || {});
+
+                    if (urlData.headers) {
+                        options.headers = Object.assign(options.headers || {}, urlData.headers);
+                    }
+
+                    promiseArray.push(igvxhr.loadArrayBuffer(urlData.url, options));
+                }
+            }
+            const arrayBuffers = await Promise.all(promiseArray);
+            return concatArrays(arrayBuffers)
+        }
+
+
+        static async inferFormat(config) {
+            try {
+                const url = getUrl(config);
+                const headerURL = `${url}${url.includes("?") ? "&" : "?"}class=header`;
+                const ticket = await igvxhr.loadJson(headerURL, buildOptions(config));
+                if (ticket.htsget) {
+                    const format = ticket.htsget.format;
+                    if (!(format === "BAM" || format === "VCF")) {
+                        throw  Error(`htsget format ${format} is not supported`)
+                    }
+                    config.format = format.toLowerCase();
+                    config.sourceType = "htsget";
+                    if (!config.name) {
+                        config.name = await getFilename$1(config.url);
+                    }
+                }
+            } catch (e) {
+                // Errors => this is not an htsget source, not an application error.  Ignore
+            }
+        }
+    }
+
+    /**
+     * Extract the full url from the config.  Striving for backward compatibility, "endpoint" and "id" are deprecated.
+     *
+     * @param config
+     */
+    function getUrl(config) {
+        if (config.url && config.endpoint && config.id) {
+            return config.url + config.endpoint + config.id    // Deprecated
+        } else if (config.endpoint && config.id) {
+            return config.endpoint + config.id                // Deprecated
+        } else if (config.url) {
+            if (config.url.startsWith("htsget://")) {
+                return config.url.replace("htsget://", "https://")    // htsget -> http not supported
+            } else {
+                return config.url
+            }
+        } else {
+            throw Error("Must specify either 'url', or 'endpoint' and 'id")
+        }
+
+
+    }
+
+    /**
+     * Concatenate a list of array buffers, returning an UInt8Array
+     * @param arrayBuffers
+     */
+    function concatArrays(arrayBuffers) {
+
+        let len = 0;
+        for (let a of arrayBuffers) {
+            len += a.byteLength;
+        }
+
+        let offset = 0;
+        const newArray = new Uint8Array(len);
+        for (let buf of arrayBuffers) {
+            const a = new Uint8Array(buf);
+            newArray.set(a, offset);
+            offset += a.length;
+        }
+
+        return newArray
+    }
+
+    function dataUriToBytes(dataUri) {
+
+        const split = dataUri.split(',');
+        const info = split[0].split(':')[1];
+        let dataString = split[1];
+
+        if (info.indexOf('base64') >= 0) {
+            dataString = atob(dataString);
+        } else {
+            dataString = decodeURI(dataString);
+        }
+
+        const bytes = new Uint8Array(dataString.length);
+        for (var i = 0; i < dataString.length; i++) {
+            bytes[i] = dataString.charCodeAt(i);
+        }
+
+        return bytes
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2017 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class HtsgetVariantReader extends HtsgetReader {
+
+        constructor(config, genome) {
+            super(config, genome);
+            this.parser = new VcfParser();
+        }
+
+        async readHeader() {
+            if (!this.header) {
+                const data = await this.readHeaderData();
+                const dataWrapper = getDataWrapper(data);
+                this.header = await this.parser.parseHeader(dataWrapper, this.genome);
+                this.chrAliasTable = this.header.chrAliasTable;
+            }
+            return this.header
+        }
+
+        async readFeatures(chr, start, end) {
+
+            if (this.config.format && this.config.format.toUpperCase() !== "VCF") {
+                throw  Error(`htsget format ${this.config.format} is not supported`)
+            }
+
+            if (!this.chrAliasTable) {
+                await this.readHeader();
+            }
+
+            let queryChr = this.chrAliasTable.has(chr) ? this.chrAliasTable.get(chr) : chr;
+
+            const data = await this.readData(queryChr, start, end);
+
+            const dataWrapper = getDataWrapper(data);
+
+            return this.parser.parseFeatures(dataWrapper)
+
+            //  return dataWrapper;
+
+        }
+
+    }
+
+    // Assigns a row # to each feature.  If the feature does not fit in any row and #rows == maxRows no
+    // row number is assigned.
+    function pack(featureList, maxRows) {
+
+        maxRows = maxRows || Number.MAX_SAFE_INTEGER;
+        const rows = [];
+        featureList.sort(function (a, b) {
+            return a.start - b.start
+        });
+        rows.push(-1000);
+
+        for (let feature of featureList) {
+            let r = 0;
+            const len = Math.min(rows.length, maxRows);
+            for (r = 0; r < len; r++) {
+                if (feature.start >= rows[r]) {
+                    feature.row = r;
+                    rows[r] = feature.end;
+                    break
+                }
+            }
+            feature.row = r;
+            rows[r] = feature.end;
+        }
+    }
+
+    const DEFAULT_MAX_WG_COUNT$1 = 10000;
+
+    /**
+     * Return a collection of "whole genome" features wrapping the supplied features, possibly downsampled.  The purpose
+     * is to support painting features in "whole genome view".
+     *
+     * @param allFeatures - dictionary (object), keys are chromosome names, values are lists of features
+     * @param genome
+     * @param maxWGCount - optional, maximum # of whole genome features to computer
+     * @returns {*[]}
+     */
+    function computeWGFeatures(allFeatures, genome, maxWGCount) {
+
+        const max = maxWGCount || DEFAULT_MAX_WG_COUNT$1;
+
+        const makeWGFeature = (f) => {
+            const wg = Object.assign({}, f);
+            wg.chr = "all";
+            wg.start = genome.getGenomeCoordinate(f.chr, f.start);
+            wg.end = genome.getGenomeCoordinate(f.chr, f.end);
+            wg._f = f;
+            // Don't draw exons in whole genome view
+            if (wg["exons"]) delete wg["exons"];
+            return wg
+        };
+
+        const wgChromosomeNames = new Set(genome.wgChromosomeNames);
+        const wgFeatures = [];
+        let count = 0;
+        for (let c of genome.wgChromosomeNames) {
+
+            if(Array.isArray(allFeatures)) {
+                const featureDict = {};
+                for(let f of allFeatures) {
+                    const chr = genome.getChromosomeName(f.chr);
+                    if(!featureDict.hasOwnProperty(chr)) {
+                        featureDict[chr] = [];
+                    }
+                    featureDict[chr].push(f);
+                }
+                allFeatures = featureDict;
+            }
+
+            const features = allFeatures[c];
+
+            if (features) {
+                for (let f of features) {
+                    let queryChr = genome.getChromosomeName(f.chr);
+                    if (wgChromosomeNames.has(queryChr)) {
+                        if (wgFeatures.length < max) {
+                            wgFeatures.push(makeWGFeature(f));
+                        } else {
+                            //Reservoir sampling
+                            const samplingProb = max / (count + 1);
+                            if (Math.random() < samplingProb) {
+                                const idx = Math.floor(Math.random() * (max - 1));
+                                wgFeatures[idx] = makeWGFeature(f);
+                            }
+                        }
+                    }
+                    count++;
+                }
+            }
+        }
+
+        wgFeatures.sort(function (a, b) {
+            return a.start - b.start
+        });
+
+        return wgFeatures
+    }
+
+    function packFeatures(features, maxRows) {
+
+        maxRows = maxRows || 1000;
+        if (features == null || features.length === 0) {
+            return
+        }
+        // Segregate by chromosome
+        const chrFeatureMap = {};
+        const chrs = [];
+        for (let feature of features) {
+            const chr = feature.chr;
+            let flist = chrFeatureMap[chr];
+            if (!flist) {
+                flist = [];
+                chrFeatureMap[chr] = flist;
+                chrs.push(chr);
+            }
+            flist.push(feature);
+        }
+
+        // Loop through chrosomosomes and pack features;
+        for (let chr of chrs) {
+            pack(chrFeatureMap[chr], maxRows);
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014-2015 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const DEFAULT_MAX_WG_COUNT = 10000;
+
+    /**
+     * feature source for "bed like" files (tab or whitespace delimited files with 1 feature per line: bed, gff, vcf, etc)
+     *
+     * @param config
+     * @constructor
+     */
+    class TextFeatureSource {
+
+        constructor(config, genome) {
+
+            this.config = config || {};
+            this.genome = genome;
+            this.sourceType = (config.sourceType === undefined ? "file" : config.sourceType);
+            this.maxWGCount = config.maxWGCount || DEFAULT_MAX_WG_COUNT;
+
+            const queryableFormats = new Set(["bigwig", "bw", "bigbed", "bb", "biginteract", "biggenepred", "bignarrowpeak", "tdf"]);
+
+            this.queryable = config.indexURL || config.queryable === true;   // False by default, unless explicitly set
+            if (config.reader) {
+                // Explicit reader implementation
+                this.reader = config.reader;
+                this.queryable = config.queryable !== false;
+            } else if (config.sourceType === "ga4gh") {
+                this.reader = new Ga4ghVariantReader(config, genome);
+                this.queryable = true;
+            } else if (config.sourceType === "immvar") {
+                this.reader = new ImmVarReader(config);
+                this.queryable = true;
+            } else if (config.type === "eqtl" && config.sourceType === "gtex-ws") {
+                this.reader = new GtexReader(config);
+                this.queryable = true;
+            } else if ("htsget" === config.sourceType) {
+                this.reader = new HtsgetVariantReader(config, genome);
+                this.queryable = true;
+            } else if (config.sourceType === 'ucscservice') {
+                this.reader = new UCSCServiceReader(config.source);
+                this.queryable = true;
+            } else if (config.sourceType === 'custom') {
+                this.reader = new CustomServiceReader(config.source);
+                this.queryable = false !== config.source.queryable;
+            } else if ("civic-ws" === config.sourceType) {
+                this.reader = new CivicReader(config);
+                this.queryable = false;
+            } else {
+                // File of some type (i.e. not a webservice)
+                this.reader = new FeatureFileReader(config, genome);
+                if (config.queryable !== undefined) {
+                    this.queryable = config.queryable;
+                } else if (queryableFormats.has(config.format) || this.reader.indexed) {
+                    this.queryable = true;
+                } else ;
+            }
+
+            // Set  searchable unless explicitly turned off, or track uses in indexed or otherwise queryable
+            // feature source.  queryable => features loaded on demand (by query)
+            this.searchable = config.searchable === true || config.searchableFields || (config.searchable !== false && !this.queryable);
+
+        }
+
+        async defaultVisibilityWindow() {
+            if (this.reader && typeof this.reader.defaultVisibilityWindow === 'function') {
+                return this.reader.defaultVisibilityWindow()
+            }
+        }
+
+        async trackType() {
+            const header = await this.getHeader();
+            if (header) {
+                return header.type
+            } else {
+                return undefined    // Convention for unknown or unspecified
+            }
+        }
+
+        async getHeader() {
+            if (!this.header) {
+
+                if (this.reader && typeof this.reader.readHeader === "function") {
+                    const header = await this.reader.readHeader();
+                    if (header) {
+                        this.header = header;
+                        if (header.format) {
+                            this.config.format = header.format;
+                        }
+                    } else {
+                        this.header = {};
+                    }
+                } else {
+                    this.header = {};
+                }
+            }
+            return this.header
+        }
+
+        /**
+         * Required function for all data source objects.  Fetches features for the
+         * range requested.
+         *
+         * This function is quite complex due to the variety of reader types backing it, some indexed, some queryable,
+         * some not.
+         *
+         * @param chr
+         * @param start
+         * @param end
+         * @param bpPerPixel
+         */
+        async getFeatures({chr, start, end, bpPerPixel, visibilityWindow}) {
+
+            const genome = this.genome;
+            const queryChr = genome ? genome.getChromosomeName(chr) : chr;
+            const isWholeGenome = ("all" === queryChr.toLowerCase());
+
+            // Various conditions that can require a feature load
+            //   * view is "whole genome" but no features are loaded
+            //   * cache is disabled
+            //   * cache does not contain requested range
+           // const containsRange = this.featureCache.containsRange(new GenomicInterval(queryChr, start, end))
+            if ((isWholeGenome && !this.wgFeatures && this.supportsWholeGenome()) ||
+                this.config.disableCache ||
+                !this.featureCache ||
+                !this.featureCache.containsRange(new GenomicInterval(queryChr, start, end))) {
+                await this.loadFeatures(queryChr, start, end, visibilityWindow);
+            }
+
+            if (isWholeGenome) {
+                if (!this.wgFeatures) {
+                    if (this.supportsWholeGenome()) {
+                        this.wgFeatures = computeWGFeatures(this.featureCache.getAllFeatures(), this.genome, this.maxWGCount);
+                    } else {
+                        this.wgFeatures = [];
+                    }
+                }
+                return this.wgFeatures
+            } else {
+                return this.featureCache.queryFeatures(queryChr, start, end)
+            }
+        }
+
+        supportsWholeGenome() {
+            return !this.queryable   // queryable (indexed, web services) sources don't support whole genome view
+        }
+
+        // TODO -- experimental, will only work for non-indexed sources
+        getAllFeatures() {
+            if (this.queryable || !this.featureCache) {   // queryable sources don't support all features
+                return []
+            } else {
+                return this.featureCache.getAllFeatures()
+            }
+        }
+
+
+        async loadFeatures(queryChr, start, end, visibilityWindow) {
+
+            const reader = this.reader;
+            let intervalStart = start;
+            let intervalEnd = end;
+
+            // Use visibility window to potentially expand query interval.
+            // This can save re-queries as we zoom out.  Visibility window <= 0 is a special case
+            // indicating whole chromosome should be read at once.
+            if ((!visibilityWindow || visibilityWindow <= 0) && this.config.expandQuery !== false) {
+                // Whole chromosome
+                const chromosome = this.genome ? this.genome.getChromosome(queryChr) : undefined;
+                intervalStart = 0;
+                intervalEnd = Math.max(chromosome ? chromosome.bpLength : Number.MAX_SAFE_INTEGER, end);
+            } else if (visibilityWindow > (end - start) && this.config.expandQuery !== false) {
+                const expansionWindow = Math.min(4.1 * (end - start), visibilityWindow);
+                intervalStart = Math.max(0, (start + end) / 2 - expansionWindow);
+                intervalEnd = start + expansionWindow;
+            }
+
+            let features = await reader.readFeatures(queryChr, intervalStart, intervalEnd);
+            if (this.queryable === undefined) {
+                this.queryable = reader.indexed;
+            }
+
+            const genomicInterval = this.queryable ?
+                new GenomicInterval(queryChr, intervalStart, intervalEnd) :
+                undefined;
+
+            if (features) {
+
+                if (this.config.assembleGFF !== false &&
+                    ("gtf" === this.config.format || "gff3" === this.config.format || "gff" === this.config.format)) {
+                    features = (new GFFHelper(this.config)).combineFeatures(features, genomicInterval);
+                }
+
+                // Assign overlapping features to rows
+                if (this.config.format !== "wig" && this.config.type !== "junctions") {
+                    const maxRows = this.config.maxRows || Number.MAX_SAFE_INTEGER;
+                    packFeatures(features, maxRows);
+                }
+
+                // Note - replacing previous cache with new one.  genomicInterval is optional (might be undefined => includes all features)
+                this.featureCache = new FeatureCache$1(features, this.genome, genomicInterval);
+
+                // If track is marked "searchable"< cache features by name -- use this with caution, memory intensive
+                if (this.searchable) {
+                    this.genome.addFeaturesToDB(features, this.config);
+                }
+            } else {
+                this.featureCache = new FeatureCache$1([], genomicInterval);     // Empty cache
+            }
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class BufferedReader {
+
+        constructor(config, contentLength, bufferSize) {
+            this.path = config.url;
+            this.bufferSize = bufferSize ? bufferSize : 512000;
+            this.range = {start: -1, size: -1};
+            this.config = config;
+        }
+
+        /**
+         *
+         * @param requestedRange - byte rangeas {start, size}
+         * @param fulfill - function to receive result
+         * @param asUint8 - optional flag to return result as an UInt8Array
+         */
+        async dataViewForRange(requestedRange, asUint8, retries = 0) {
+            try {
+
+                const hasData = (this.data && (this.range.start <= requestedRange.start) &&
+                    ((this.range.start + this.range.size) >= (requestedRange.start + requestedRange.size)));
+
+                if (!hasData) {
+                    let bufferSize;
+                    // If requested range size is specified, potentially expand buffer size
+                    if (requestedRange.size) {
+                        bufferSize = Math.max(this.bufferSize, requestedRange.size);
+                    } else {
+                        bufferSize = this.bufferSize;
+                    }
+                    if (this.contentLength) {
+                        bufferSize = Math.min(bufferSize, this.contentLength - requestedRange.start);
+                    }
+                    const loadRange = {start: requestedRange.start, size: bufferSize};
+                    const arrayBuffer = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {range: loadRange}));
+                    this.data = arrayBuffer;
+                    this.range = loadRange;
+                }
+
+                const len = this.data.byteLength;
+                const bufferStart = requestedRange.start - this.range.start;
+                return asUint8 ?
+                    new Uint8Array(this.data, bufferStart, len - bufferStart) :
+                    new DataView(this.data, bufferStart, len - bufferStart)
+            } catch (e) {
+                if (retries === 0 && e.message && e.message.startsWith("416")) {
+                    try {
+                        this.contentLength = await igvxhr.getContentLength(this.path, buildOptions(this.config));
+                        return this.dataViewForRange(requestedRange, asUint8, ++retries)
+                    } catch (e1) {
+                        console.error(e1);
+                    }
+                    throw e
+                }
+            }
+        }
+    }
+
+    function getDecoder(definedFieldCount, fieldCount, autoSql, format) {
+
+        if ("biginteract" === format || (autoSql && ('chromatinInteract' === autoSql.table) || 'interact' === autoSql.table)) {
+            return decodeInteract
+        } else {
+            const standardFieldCount = definedFieldCount - 3;
+            return function (feature, tokens) {
+
+                if (standardFieldCount > 0) {
+                    feature.name = tokens[0];
+                }
+                if (standardFieldCount > 1) {
+                    feature.score = Number(tokens[1]);
+                }
+                if (standardFieldCount > 2) {
+                    feature.strand = tokens[2];
+                }
+                if (standardFieldCount > 3) {
+                    feature.cdStart = parseInt(tokens[3]);
+                }
+                if (standardFieldCount > 4) {
+                    feature.cdEnd = parseInt(tokens[4]);
+                }
+                if (standardFieldCount > 5) {
+                    if (tokens[5] !== "." && tokens[5] !== "0" && tokens[5] !== "-1") {
+                        const c = IGVColor.createColorString(tokens[5]);
+                        feature.color = c.startsWith("rgb") ? c : undefined;
+                    }
+                }
+                if (standardFieldCount > 8) {
+                    const exonCount = parseInt(tokens[6]);
+                    const exonSizes = tokens[7].split(',');
+                    const exonStarts = tokens[8].split(',');
+                    const exons = [];
+                    for (let i = 0; i < exonCount; i++) {
+                        const eStart = feature.start + parseInt(exonStarts[i]);
+                        const eEnd = eStart + parseInt(exonSizes[i]);
+                        exons.push({start: eStart, end: eEnd});
+                    }
+                    findUTRs(exons, feature.cdStart, feature.cdEnd);
+                    feature.exons = exons;
+                }
+
+                if (autoSql) {
+                    // TODO -- these should be equal, validate?  fieldCount-definedFieldCount, as.fields.length, tokens.length-3
+                    const extraStart = definedFieldCount;
+                    for (let i = extraStart; i < fieldCount; i++) {
+                        if (i < autoSql.fields.length) {
+                            const name = autoSql.fields[i].name;
+                            const value = tokens[i - 3];
+                            feature[name] = value;
+                        }
+                    }
+                }
+            }
+        }
+
+        //table chromatinInteract
+    // "Chromatin interaction between two regions"
+    //     (
+    //     string chrom;      "Chromosome (or contig, scaffold, etc.). For interchromosomal, use 2 records"
+    //     uint chromStart;   "Start position of lower region. For interchromosomal, set to chromStart of this region"
+    //     uint chromEnd;     "End position of upper region. For interchromosomal, set to chromEnd of this region"
+    //     string name;       "Name of item, for display"
+    //     uint score;        "Score from 0-1000"
+    //     double value;      "Strength of interaction or other data value. Typically basis for score"
+    //     string exp;        "Experiment name (metadata for filtering). Use . if not applicable"
+    //     string color;      "Item color.  Specified as r,g,b or hexadecimal #RRGGBB or html color name, as in //www.w3.org/TR/css3-color/#html4."
+    //     string region1Chrom;  "Chromosome of lower region. For non-directional interchromosomal, chrom of this region."
+    //     uint region1Start;  "Start position of lower/this region"
+    //     uint region1End;    "End position in chromosome of lower/this region"
+    //     string region1Name;  "Identifier of lower/this region"
+    //     string region1Strand; "Orientation of lower/this region: + or -.  Use . if not applicable"
+    //     string region2Chrom; "Chromosome of upper region. For non-directional interchromosomal, chrom of other region"
+    //     uint region2Start;  "Start position in chromosome of upper/this region"
+    //     uint region2End;    "End position in chromosome of upper/this region"
+    //     string region2Name; "Identifier of upper/this region"
+    //     string region2Strand; "Orientation of upper/this region: + or -.  Use . if not applicable"
+    //     )
+        function decodeInteract(feature, tokens) {
+
+            feature.chr1 = tokens[5];
+            feature.start1 = Number.parseInt(tokens[6]);
+            feature.end1 = Number.parseInt(tokens[7]);
+
+            feature.chr2 = tokens[10];
+            feature.start2 = Number.parseInt(tokens[11]);
+            feature.end2 = Number.parseInt(tokens[12]);
+
+            feature.name = tokens[0];
+            feature.score = Number(tokens[1]);
+            feature.value = Number(tokens[2]);
+            feature.color = tokens[4] === '.' ? undefined : tokens[4] === "0" ? "rgb(0,0,0)" : tokens[4];
+
+            return feature
+        }
+    }
+
+    function findUTRs(exons, cdStart, cdEnd) {
+
+        for (let exon of exons) {
+            const end = exon.end;
+            const start = exon.start;
+            if (end < cdStart || start > cdEnd) {
+                exon.utr = true;
+            } else {
+                if (cdStart >= start && cdStart <= end) {
+                    exon.cdStart = cdStart;
+                }
+                if (cdEnd >= start && cdEnd <= end) {
+                    exon.cdEnd = cdEnd;
+                }
+            }
+        }
+    }
+
+    function scoreShade(score, color) {
+        const alpha = Math.min(1, 0.11 + 0.89 * (score / 779));
+        return alpha.toString()
+    }
+
+    function parseAutoSQL(str) {
+
+        let table;
+        const fields = [];
+        let startDecoding = false;
+        const lines = str.trim().split(/\s*[\r\n]+\s*/g);
+        for (let line of lines) {
+            if (line.startsWith('table')) {
+                table = line.split(/\s+/)[1].trim();
+            } else if (line.startsWith('(')) {
+                startDecoding = true;
+            } else if (line.startsWith(')')) ; else if (startDecoding) {
+                if (line.length > 0) {
+                    const idx = line.indexOf(';');
+                    const tokens = line.substr(0, idx).split(/\s+/);
+                    const description = line.substr(idx + 1).replace(/"/g, '').trim();
+                    fields.push({
+                        type: tokens[0],
+                        name: tokens[1],
+                        description: description
+                    });
+                }
+            }
+        }
+        return {
+            table: table,
+            fields: fields
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    let BIGWIG_MAGIC_LTH = 0x888FFC26; // BigWig Magic Low to High
+    let BIGWIG_MAGIC_HTL = 0x26FC8F66; // BigWig Magic High to Low
+    let BIGBED_MAGIC_LTH = 0x8789F2EB; // BigBed Magic Low to High
+    let BIGBED_MAGIC_HTL = 0xEBF28987; // BigBed Magic High to Low
+    let BBFILE_HEADER_SIZE = 64;
+    let RPTREE_HEADER_SIZE = 48;
+    let RPTREE_NODE_LEAF_ITEM_SIZE = 32;   // leaf item size
+    let RPTREE_NODE_CHILD_ITEM_SIZE = 24;  // child item size
+    let BUFFER_SIZE = 512000;     //  buffer
+
+    class BWReader {
+
+        constructor(config, genome) {
+            this.path = config.url;
+            this.format = config.format || "bigwig";
+            this.genome = genome;
+            this.rpTreeCache = {};
+            this.config = config;
+            this.loader = isDataURL(this.path) ? new DataBuffer(this.path) : igvxhr;
+        }
+
+        async readWGFeatures(bpPerPixel, windowFunction) {
+            await this.loadHeader();
+            const chrIdx1 = 0;
+            const chrIdx2 = this.chromTree.idToChrom.length - 1;
+            const chr1 = this.chromTree.idToChrom[chrIdx1];
+            const chr2 = this.chromTree.idToChrom[chrIdx2];
+            return this.readFeatures(chr1, 0, chr2, Number.MAX_VALUE, bpPerPixel, windowFunction)
+        }
+
+        async readFeatures(chr1, bpStart, chr2, bpEnd, bpPerPixel, windowFunction) {
+
+            await this.loadHeader();
+            const chrIdx1 = this.chromTree.chromToID[chr1];
+            const chrIdx2 = this.chromTree.chromToID[chr2];
+            if (chrIdx1 === undefined || chrIdx2 === undefined) {
+                return []
+            }
+
+            let treeOffset;
+            let decodeFunction;
+            if (this.type === "bigwig") {
+                // Select a biwig "zoom level" appropriate for the current resolution.
+                const zoomLevelHeaders = await this.getZoomHeaders();
+                let zoomLevelHeader = bpPerPixel ? zoomLevelForScale$1(bpPerPixel, zoomLevelHeaders) : undefined;
+                if (zoomLevelHeader) {
+                    treeOffset = zoomLevelHeader.indexOffset;
+                    decodeFunction = decodeZoomData;
+                } else {
+                    treeOffset = this.header.fullIndexOffset;
+                    decodeFunction = decodeWigData;
+                }
+            } else {
+                // bigbed, zoom data is not currently used in igv for bed type features
+                treeOffset = this.header.fullIndexOffset;
+                decodeFunction = getBedDataDecoder.call(this);
+            }
+
+
+            // Load the R Tree and fine leaf items
+            const rpTree = await this.loadRPTree(treeOffset);
+            const leafItems = await rpTree.findLeafItemsOverlapping(chrIdx1, bpStart, chrIdx2, bpEnd);
+            if (!leafItems || leafItems.length === 0) {
+                return []
+            } else {
+
+                // Consolidate leaf items and get all data at once
+                let start = Number.MAX_VALUE;
+                let end = 0;
+                for (let item of leafItems) {
+                    start = Math.min(start, item.dataOffset);
+                    end = Math.max(end, item.dataOffset + item.dataSize);
+                }
+                const size = end - start;
+                const arrayBuffer = await this.loader.loadArrayBuffer(this.config.url, buildOptions(this.config, {
+                    range: {
+                        start: start,
+                        size: size
+                    }
+                }));
+
+                // Parse data and return features
+                const allFeatures = [];
+                for (let item of leafItems) {
+                    const uint8Array = new Uint8Array(arrayBuffer, item.dataOffset - start, item.dataSize);
+                    let plain;
+                    const isCompressed = this.header.uncompressBuffSize > 0;
+                    if (isCompressed) {
+                        plain = inflate_1$3(uint8Array);
+                    } else {
+                        plain = uint8Array;
+                    }
+                    decodeFunction.call(this, new DataView(plain.buffer), chrIdx1, bpStart, chrIdx2, bpEnd, allFeatures, this.chromTree.idToChrom, windowFunction);
+                }
+
+                allFeatures.sort(function (a, b) {
+                    return a.start - b.start
+                });
+
+                return allFeatures
+            }
+        }
+
+        async getZoomHeaders() {
+            if (this.zoomLevelHeaders) {
+                return this.zoomLevelHeaders
+            } else {
+                await this.loadHeader();
+                return this.zoomLevelHeaders
+            }
+        }
+
+        async loadHeader() {
+
+            if (this.header) {
+                return this.header
+            } else {
+                let data = await this.loader.loadArrayBuffer(this.path, buildOptions(this.config, {
+                    range: {
+                        start: 0,
+                        size: BBFILE_HEADER_SIZE
+                    }
+                }));
+
+                let header;
+
+                // Assume low-to-high unless proven otherwise
+                this.littleEndian = true;
+
+                let binaryParser = new BinaryParser(new DataView(data));
+                let magic = binaryParser.getUInt();
+                if (magic === BIGWIG_MAGIC_LTH) {
+                    this.type = "bigwig";
+                } else if (magic === BIGBED_MAGIC_LTH) {
+                    this.type = "bigbed";
+                } else {
+                    //Try big endian order
+                    this.littleEndian = false;
+
+                    binaryParser.littleEndian = false;
+                    binaryParser.position = 0;
+                    let magic = binaryParser.getUInt();
+
+                    if (magic === BIGWIG_MAGIC_HTL) {
+                        this.type = "bigwig";
+                    } else if (magic === BIGBED_MAGIC_HTL) {
+                        this.type = "bigbed";
+                    } else ;
+                }
+                // Table 5  "Common header for bigwig and bigbed files"
+                header = {
+                    bwVersion: binaryParser.getUShort(),
+                    nZoomLevels: binaryParser.getUShort(),
+                    chromTreeOffset: binaryParser.getLong(),
+                    fullDataOffset: binaryParser.getLong(),
+                    fullIndexOffset: binaryParser.getLong(),
+                    fieldCount: binaryParser.getUShort(),
+                    definedFieldCount: binaryParser.getUShort(),
+                    autoSqlOffset: binaryParser.getLong(),
+                    totalSummaryOffset: binaryParser.getLong(),
+                    uncompressBuffSize: binaryParser.getInt(),
+                    extensionOffset: binaryParser.getLong()
+                };
+
+                ///////////
+
+                const startOffset = BBFILE_HEADER_SIZE;
+                let range = {start: startOffset, size: (header.fullDataOffset - startOffset + 5)};
+                data = await this.loader.loadArrayBuffer(this.path, buildOptions(this.config, {range: range}));
+
+                const nZooms = header.nZoomLevels;
+                binaryParser = new BinaryParser(new DataView(data));
+
+                this.zoomLevelHeaders = [];
+                this.firstZoomDataOffset = Number.MAX_SAFE_INTEGER;
+                for (let i = 1; i <= nZooms; i++) {
+                    const zoomNumber = nZooms - i;
+                    const zlh = new ZoomLevelHeader(zoomNumber, binaryParser);
+                    this.firstZoomDataOffset = Math.min(zlh.dataOffset, this.firstZoomDataOffset);
+                    this.zoomLevelHeaders[zoomNumber] = zlh;
+                }
+
+                // Autosql
+                if (header.autoSqlOffset > 0) {
+                    binaryParser.position = header.autoSqlOffset - startOffset;
+                    const autoSqlString = binaryParser.getString();
+                    if (autoSqlString) {
+                        this.autoSql = parseAutoSQL(autoSqlString);
+                    }
+                }
+
+                // Total summary
+                if (header.totalSummaryOffset > 0) {
+                    binaryParser.position = header.totalSummaryOffset - startOffset;
+                    this.totalSummary = new BWTotalSummary(binaryParser);
+                }
+
+                // Chrom data index
+                if (header.chromTreeOffset > 0) {
+                    binaryParser.position = header.chromTreeOffset - startOffset;
+                    this.chromTree = new BPTree(binaryParser, startOffset, this.genome);
+                } else {
+                    // TODO -- this is an error, not expected
+                    throw "BigWig chromosome tree offset <= 0"
+                }
+
+                //Finally total data count
+                binaryParser.position = header.fullDataOffset - startOffset;
+                header.dataCount = binaryParser.getInt();
+                ///////////
+
+                this.setDefaultVisibilityWindow(header);
+
+                this.header = header;
+                return this.header
+
+            }
+        }
+
+        async loadRPTree(offset) {
+
+            let rpTree = this.rpTreeCache[offset];
+            if (rpTree) {
+                return rpTree
+            } else {
+                rpTree = new RPTree(offset, this.config, this.littleEndian, this.loader);
+                await rpTree.load();
+                this.rpTreeCache[offset] = rpTree;
+                return rpTree
+            }
+        }
+
+        async getType() {
+            await this.loadHeader();
+            return this.type
+        }
+
+        async getTrackType() {
+            await this.loadHeader();
+            if (this.type === "bigwig") {
+                return "wig"
+            } else {
+                return this.autoSql && this.autoSql.table === "chromatinInteract" ? "interact" : "annotation"
+            }
+        }
+
+        setDefaultVisibilityWindow(header) {
+            if (this.type === "bigwig") {
+                this.visibilityWindow = -1;
+            } else {
+                // bigbed
+                let genomeSize = this.genome ? this.genome.getGenomeLength() : 3088286401;
+                // Estimate window size to return ~ 1,000 features, assuming even distribution across the genome
+                this.visibilityWindow = header.dataCount < 1000 ? -1 : 1000 * (genomeSize / header.dataCount);
+
+            }
+        }
+    }
+
+
+    class ZoomLevelHeader {
+        constructor(index, byteBuffer) {
+            this.index = index;
+            this.reductionLevel = byteBuffer.getInt();
+            this.reserved = byteBuffer.getInt();
+            this.dataOffset = byteBuffer.getLong();
+            this.indexOffset = byteBuffer.getLong();
+        }
+    }
+
+    class RPTree {
+
+        constructor(fileOffset, config, littleEndian, loader) {
+
+            this.config = config;
+            this.loader = loader;
+            this.fileOffset = fileOffset; // File offset to beginning of tree
+            this.path = config.url;
+            this.littleEndian = littleEndian;
+        }
+
+        async load() {
+            const rootNodeOffset = this.fileOffset + RPTREE_HEADER_SIZE;
+            const bufferedReader = isDataURL(this.path) ?
+                this.loader :
+                new BufferedReader(this.config, BUFFER_SIZE);
+            this.rootNode = await this.readNode(rootNodeOffset, bufferedReader);
+            return this
+        }
+
+        async readNode(filePosition, bufferedReader) {
+
+            let dataView = await bufferedReader.dataViewForRange({start: filePosition, size: 4}, false);
+            let binaryParser = new BinaryParser(dataView, this.littleEndian);
+            const type = binaryParser.getByte();
+            const isLeaf = (type === 1);
+            binaryParser.getByte();
+            const count = binaryParser.getUShort();
+            filePosition += 4;
+
+            let bytesRequired = count * (isLeaf ? RPTREE_NODE_LEAF_ITEM_SIZE : RPTREE_NODE_CHILD_ITEM_SIZE);
+            let range2 = {start: filePosition, size: bytesRequired};
+            dataView = await bufferedReader.dataViewForRange(range2, false);
+            const items = new Array(count);
+            binaryParser = new BinaryParser(dataView);
+
+            if (isLeaf) {
+                for (let i = 0; i < count; i++) {
+                    let item = {
+                        isLeaf: true,
+                        startChrom: binaryParser.getInt(),
+                        startBase: binaryParser.getInt(),
+                        endChrom: binaryParser.getInt(),
+                        endBase: binaryParser.getInt(),
+                        dataOffset: binaryParser.getLong(),
+                        dataSize: binaryParser.getLong()
+                    };
+                    items[i] = item;
+
+                }
+                return new RPTreeNode(items)
+            } else { // non-leaf
+                for (let i = 0; i < count; i++) {
+
+                    let item = {
+                        isLeaf: false,
+                        startChrom: binaryParser.getInt(),
+                        startBase: binaryParser.getInt(),
+                        endChrom: binaryParser.getInt(),
+                        endBase: binaryParser.getInt(),
+                        childOffset: binaryParser.getLong()
+                    };
+                    items[i] = item;
+                }
+
+                return new RPTreeNode(items)
+            }
+
+        }
+
+        async findLeafItemsOverlapping(chrIdx1, startBase, chrIdx2, endBase) {
+
+            let self = this;
+
+            return new Promise(function (fulfill, reject) {
+
+                let leafItems = [],
+                    processing = new Set(),
+                    bufferedReader = isDataURL(self.path) ?
+                        self.loader :
+                        new BufferedReader(self.config, BUFFER_SIZE);
+
+                processing.add(0);  // Zero represents the root node
+                findLeafItems(self.rootNode, 0);
+
+                function findLeafItems(node, nodeId) {
+
+                    if (overlaps(node, chrIdx1, startBase, chrIdx2, endBase)) {
+
+                        let items = node.items;
+
+                        items.forEach(function (item) {
+
+                            if (overlaps(item, chrIdx1, startBase, chrIdx2, endBase)) {
+
+                                if (item.isLeaf) {
+                                    leafItems.push(item);
+                                } else {
+                                    if (item.childNode) {
+                                        findLeafItems(item.childNode);
+                                    } else {
+                                        processing.add(item.childOffset);  // Represent node to-be-loaded by its file position
+
+                                        self.readNode(item.childOffset, bufferedReader)
+                                            .then(function (node) {
+                                                item.childNode = node;
+                                                findLeafItems(node, item.childOffset);
+                                            })
+                                            .catch(reject);
+                                    }
+                                }
+                            }
+                        });
+
+                    }
+
+                    if (nodeId !== undefined) processing.delete(nodeId);
+
+                    // Wait until all nodes are processed
+                    if (processing.size === 0) {
+                        fulfill(leafItems);
+                    }
+                }
+            })
+        }
+    }
+
+    class RPTreeNode {
+
+        constructor(items) {
+
+            this.items = items;
+
+            let minChromId = Number.MAX_SAFE_INTEGER,
+                maxChromId = 0,
+                minStartBase = Number.MAX_SAFE_INTEGER,
+                maxEndBase = 0,
+                i,
+                item;
+
+            for (i = 0; i < items.length; i++) {
+                item = items[i];
+                minChromId = Math.min(minChromId, item.startChrom);
+                maxChromId = Math.max(maxChromId, item.endChrom);
+                minStartBase = Math.min(minStartBase, item.startBase);
+                maxEndBase = Math.max(maxEndBase, item.endBase);
+            }
+
+            this.startChrom = minChromId;
+            this.endChrom = maxChromId;
+            this.startBase = minStartBase;
+            this.endBase = maxEndBase;
+        }
+    }
+
+    class BPTree {
+
+        constructor(binaryParser, startOffset, genome) {
+
+            let magic = binaryParser.getInt();
+            let blockSize = binaryParser.getInt();
+            let keySize = binaryParser.getInt();
+            let valSize = binaryParser.getInt();
+            let itemCount = binaryParser.getLong();
+            let reserved = binaryParser.getLong();
+            let chromToId = {};
+            let idToChrom = [];
+
+            this.header = {
+                magic: magic,
+                blockSize: blockSize,
+                keySize: keySize,
+                valSize: valSize,
+                itemCount: itemCount,
+                reserved: reserved
+            };
+            this.chromToID = chromToId;
+            this.idToChrom = idToChrom;
+
+            // Recursively walk tree to populate dictionary
+            readTreeNode(binaryParser, -1);
+
+
+            function readTreeNode(byteBuffer, offset) {
+
+                if (offset >= 0) byteBuffer.position = offset;
+
+                let type = byteBuffer.getByte();
+                    byteBuffer.getByte();
+                    let count = byteBuffer.getUShort(),
+                    i,
+                    key,
+                    chromId,
+                    childOffset,
+                    bufferOffset,
+                    currOffset;
+
+
+                if (type === 1) {
+
+                    for (i = 0; i < count; i++) {
+
+                        key = byteBuffer.getFixedLengthTrimmedString(keySize);
+                        chromId = byteBuffer.getInt();
+                        byteBuffer.getInt();
+
+                        if (genome) key = genome.getChromosomeName(key);  // Translate to canonical chr name
+                        chromToId[key] = chromId;
+                        idToChrom[chromId] = key;
+
+                    }
+                } else { // non-leaf
+
+                    for (i = 0; i < count; i++) {
+
+                        key = byteBuffer.getFixedLengthTrimmedString(keySize);
+                        childOffset = byteBuffer.getLong();
+                        bufferOffset = childOffset - startOffset;
+                        currOffset = byteBuffer.position;
+                        readTreeNode(byteBuffer, bufferOffset);
+                        byteBuffer.position = currOffset;
+                    }
+                }
+
+            }
+        }
+    }
+
+    /**
+     * Return true if {chrIdx1:startBase-chrIdx2:endBase} overlaps item's interval
+     * @returns {boolean}
+     */
+    function overlaps(item, chrIdx1, startBase, chrIdx2, endBase) {
+
+        if (!item) {
+            console.log("null item for " + chrIdx1 + " " + startBase + " " + endBase);
+            return false
+        }
+
+        return ((chrIdx2 > item.startChrom) || (chrIdx2 === item.startChrom && endBase >= item.startBase)) &&
+            ((chrIdx1 < item.endChrom) || (chrIdx1 === item.endChrom && startBase <= item.endBase))
+
+
+    }
+
+    class BWTotalSummary {
+
+        constructor(byteBuffer) {
+            if (byteBuffer) {
+                this.basesCovered = byteBuffer.getLong();
+                this.minVal = byteBuffer.getDouble();
+                this.maxVal = byteBuffer.getDouble();
+                this.sumData = byteBuffer.getDouble();
+                this.sumSquares = byteBuffer.getDouble();
+                computeStats.call(this);
+            } else {
+                this.basesCovered = 0;
+                this.minVal = 0;
+                this.maxVal = 0;
+                this.sumData = 0;
+                this.sumSquares = 0;
+                this.mean = 0;
+                this.stddev = 0;
+            }
+        }
+    }
+
+    function computeStats() {
+        let n = this.basesCovered;
+        if (n > 0) {
+            this.mean = this.sumData / n;
+            this.stddev = Math.sqrt(this.sumSquares / (n - 1));
+
+            let min = this.minVal < 0 ? this.mean - 2 * this.stddev : 0,
+                max = this.maxVal > 0 ? this.mean + 2 * this.stddev : 0;
+
+            this.defaultRange = {
+                min: min,
+                max: max
+            };
+        }
+    }
+
+    function zoomLevelForScale$1(bpPerPixel, zoomLevelHeaders) {
+        let level;
+        for (let i = 0; i < zoomLevelHeaders.length; i++) {
+            const zl = zoomLevelHeaders[i];
+            if (zl.reductionLevel < bpPerPixel) {
+                level = zl;
+                break
+            }
+        }
+        return level
+    }
+
+
+    function decodeWigData(data, chrIdx1, bpStart, chrIdx2, bpEnd, featureArray, chrDict) {
+
+        const binaryParser = new BinaryParser(data);
+        const chromId = binaryParser.getInt();
+        const blockStart = binaryParser.getInt();
+        let chromStart = blockStart;
+        let chromEnd = binaryParser.getInt();
+        const itemStep = binaryParser.getInt();
+        const itemSpan = binaryParser.getInt();
+        const type = binaryParser.getByte();
+        binaryParser.getByte();
+        let itemCount = binaryParser.getUShort();
+
+        if (chromId >= chrIdx1 && chromId <= chrIdx2) {
+
+            let idx = 0;
+            while (itemCount-- > 0) {
+                let value;
+                switch (type) {
+                    case 1:
+                        chromStart = binaryParser.getInt();
+                        chromEnd = binaryParser.getInt();
+                        value = binaryParser.getFloat();
+                        break
+                    case 2:
+                        chromStart = binaryParser.getInt();
+                        value = binaryParser.getFloat();
+                        chromEnd = chromStart + itemSpan;
+                        break
+                    case 3:  // Fixed step
+                        value = binaryParser.getFloat();
+                        chromStart = blockStart + idx * itemStep;
+                        chromEnd = chromStart + itemSpan;
+                        idx++;
+                        break
+                }
+
+                if (chromId < chrIdx1 || (chromId === chrIdx1 && chromEnd < bpStart)) continue
+                else if (chromId > chrIdx2 || (chromId === chrIdx2 && chromStart >= bpEnd)) break
+
+                if (Number.isFinite(value)) {
+                    const chr = chrDict[chromId];
+                    featureArray.push({chr: chr, start: chromStart, end: chromEnd, value: value});
+                }
+
+            }
+        }
+    }
+
+    function getBedDataDecoder() {
+
+        const minSize = 3 * 4 + 1;   // Minimum # of bytes required for a bed record
+        const decoder = getDecoder(this.header.definedFieldCount, this.header.fieldCount, this.autoSql, this.format);
+        return function (data, chrIdx1, bpStart, chrIdx2, bpEnd, featureArray, chrDict) {
+            const binaryParser = new BinaryParser(data);
+            while (binaryParser.remLength() >= minSize) {
+
+                const chromId = binaryParser.getInt();
+                const chr = chrDict[chromId];
+                const chromStart = binaryParser.getInt();
+                const chromEnd = binaryParser.getInt();
+                const rest = binaryParser.getString();
+                if (chromId < chrIdx1 || (chromId === chrIdx1 && chromEnd < bpStart)) continue
+                else if (chromId > chrIdx2 || (chromId === chrIdx2 && chromStart >= bpEnd)) break
+
+                if (chromEnd > 0) {
+                    const feature = {chr: chr, start: chromStart, end: chromEnd};
+                    featureArray.push(feature);
+                    const tokens = rest.split("\t");
+                    decoder(feature, tokens);
+                }
+            }
+        }
+    }
+
+
+    function decodeZoomData(data, chrIdx1, bpStart, chrIdx2, bpEnd, featureArray, chrDict, windowFunction) {
+
+        const binaryParser = new BinaryParser(data);
+        const minSize = 8 * 4;  // Minimum # of bytes required for a zoom record
+
+
+        while (binaryParser.remLength() >= minSize) {
+            const chromId = binaryParser.getInt();
+            const chr = chrDict[chromId];
+            const chromStart = binaryParser.getInt();
+            const chromEnd = binaryParser.getInt();
+            const validCount = binaryParser.getInt();
+            const minVal = binaryParser.getFloat();
+            const maxVal = binaryParser.getFloat();
+            const sumData = binaryParser.getFloat();
+            binaryParser.getFloat();
+            let value;
+            switch (windowFunction) {
+                case "min":
+                    value = minVal;
+                    break
+                case "max":
+                    value = maxVal;
+                    break
+                default:
+                    value = validCount === 0 ? 0 : sumData / validCount;
+            }
+
+            if (chromId < chrIdx1 || (chromId === chrIdx1 && chromEnd < bpStart)) continue
+            else if (chromId > chrIdx2 || (chromId === chrIdx2 && chromStart >= bpEnd)) break
+
+
+            if (Number.isFinite(value)) {
+                featureArray.push({chr: chr, start: chromStart, end: chromEnd, value: value});
+
+
+            }
+        }
+    }
+
+    class DataBuffer {
+
+        constructor(dataURI) {
+            this.data = decodeDataURI$1(dataURI).buffer;
+        }
+
+        /**
+         * igvxhr interface
+         * @param ignore
+         * @param options
+         * @returns {any}
+         */
+        loadArrayBuffer(ignore, options) {
+            const range = options.range;
+            return range ? this.data.slice(range.start, range.start + range.size) : this.data
+        }
+
+        /**
+         * BufferedReader interface
+         *
+         * @param requestedRange - byte rangeas {start, size}
+         * @param fulfill - function to receive result
+         * @param asUint8 - optional flag to return result as an UInt8Array
+         */
+        async dataViewForRange(requestedRange, asUint8) {
+            const len = Math.min(this.data.byteLength - requestedRange.start, requestedRange.size);
+            return asUint8 ?
+                new Uint8Array(this.data, requestedRange.start, len) :
+                new DataView(this.data, requestedRange.start, len)
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class BWSource {
+
+        constructor(config, genome) {
+            this.reader = new BWReader(config, genome);
+            this.genome = genome;
+            this.format = config.format || "bigwig";
+            this.wgValues = {};
+            this.queryable = true;
+        }
+
+        async getFeatures({chr, start, end, bpPerPixel, windowFunction}) {
+
+            const isBigWig = this.reader.type === "bigwig";
+
+            const features = (chr.toLowerCase() === "all") ?
+                (isBigWig ? await this.getWGValues(windowFunction) : []) :
+                await this.reader.readFeatures(chr, start, chr, end, bpPerPixel, windowFunction);
+
+            if (!isBigWig) {
+                pack(features);
+            }
+            return features
+        }
+
+        async getHeader() {
+            return this.reader.loadHeader()
+        }
+
+        getDefaultRange() {
+            if (this.reader.totalSummary !== undefined) {
+                return this.reader.totalSummary.defaultRange
+            } else {
+                return undefined
+            }
+        }
+
+        async defaultVisibilityWindow() {
+            return this.reader.defaultVisibilityWindow
+        }
+
+        async getWGValues(windowFunction) {
+
+            const nominalScreenWidth = 1000;      // This doesn't need to be precise
+            const genome = this.genome;
+
+            if (this.wgValues[windowFunction]) {
+                return this.wgValues[windowFunction]
+            } else {
+
+                const bpPerPixel = genome.getGenomeLength() / nominalScreenWidth;
+                const features = await this.reader.readWGFeatures(bpPerPixel, windowFunction);
+                let wgValues = [];
+                for (let f of features) {
+                    const chr = f.chr;
+                    const offset = genome.getCumulativeOffset(chr);
+                    const wgFeature = Object.assign({}, f);
+                    wgFeature.chr = "all";
+                    wgFeature.start = offset + f.start;
+                    wgFeature.end = offset + f.end;
+                    wgValues.push(wgFeature);
+                }
+                this.wgValues[windowFunction] = wgValues;
+                return wgValues
+            }
+        }
+
+        supportsWholeGenome() {
+            return this.reader.type === "bigwig"
+        }
+
+        async trackType() {
+            return this.reader.getTrackType()
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016 University of California San Diego
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const GZIP_FLAG = 0x1;
+
+    class TDFReader {
+
+        constructor(config, genome) {
+            this.config = config;
+            this.genome = genome;
+            this.path = config.url;
+            this.groupCache = {};
+            this.datasetCache = {};
+        }
+
+
+        async readHeader() {
+
+            if (this.magic !== undefined) {
+                return this   // Already read
+            }
+
+            let data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {range: {start: 0, size: 64000}}));
+            let binaryParser = new BinaryParser(new DataView(data));
+            this.magic = binaryParser.getInt();
+            this.version = binaryParser.getInt();
+            this.indexPos = binaryParser.getLong();
+            this.indexSize = binaryParser.getInt();
+            binaryParser.getInt();
+
+
+            if (this.version >= 2) {
+                let nWindowFunctions = binaryParser.getInt();
+                this.windowFunctions = [];
+                while (nWindowFunctions-- > 0) {
+                    this.windowFunctions.push(binaryParser.getString());
+                }
+            }
+
+            this.trackType = binaryParser.getString();
+            this.trackLine = binaryParser.getString();
+
+            let nTracks = binaryParser.getInt();
+            this.trackNames = [];
+            while (nTracks-- > 0) {
+                this.trackNames.push(binaryParser.getString());
+            }
+            this.genomeID = binaryParser.getString();
+            this.flags = binaryParser.getInt();
+            this.compressed = (this.flags & GZIP_FLAG) !== 0;
+
+            // Now read index
+            data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {
+                range: {
+                    start: this.indexPos,
+                    size: this.indexSize
+                }
+            }));
+            binaryParser = new BinaryParser(new DataView(data));
+            this.datasetIndex = {};
+            let nEntries = binaryParser.getInt();
+            while (nEntries-- > 0) {
+                const name = binaryParser.getString();
+                const pos = binaryParser.getLong();
+                const size = binaryParser.getInt();
+                this.datasetIndex[name] = {position: pos, size: size};
+            }
+
+            this.groupIndex = {};
+            nEntries = binaryParser.getInt();
+            while (nEntries-- > 0) {
+                const name = binaryParser.getString();
+                const pos = binaryParser.getLong();
+                const size = binaryParser.getInt();
+                this.groupIndex[name] = {position: pos, size: size};
+            }
+
+            return this
+        }
+
+        async readDataset(chr, windowFunction, zoom) {
+
+            const key = chr + "_" + windowFunction + "_" + zoom;
+
+            if (this.datasetCache[key]) {
+                return this.datasetCache[key]
+
+            } else {
+                await this.readHeader();
+                const wf = (this.version < 2) ? "" : "/" + windowFunction;
+                const zoomString = (chr.toLowerCase() === "all" || zoom === undefined) ? "0" : zoom.toString();
+
+                let dsName;
+                if (windowFunction === "raw") {
+                    dsName = "/" + chr + "/raw";
+                } else {
+                    dsName = "/" + chr + "/z" + zoomString + wf;
+                }
+                const indexEntry = this.datasetIndex[dsName];
+
+                if (indexEntry === undefined) {
+                    return undefined
+                }
+
+                const data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {
+                    range: {
+                        start: indexEntry.position,
+                        size: indexEntry.size
+                    }
+                }));
+
+                if (!data) {
+                    return undefined
+                }
+
+                const binaryParser = new BinaryParser(new DataView(data));
+                let nAttributes = binaryParser.getInt();
+                const attributes = {};
+                while (nAttributes-- > 0) {
+                    attributes[binaryParser.getString()] = binaryParser.getString();
+                }
+                const dataType = binaryParser.getString();
+                const tileWidth = binaryParser.getFloat();
+                let nTiles = binaryParser.getInt();
+                const tiles = [];
+                while (nTiles-- > 0) {
+                    tiles.push({position: binaryParser.getLong(), size: binaryParser.getInt()});
+                }
+
+                const dataset = {
+                    name: dsName,
+                    attributes: attributes,
+                    dataType: dataType,
+                    tileWidth: tileWidth,
+                    tiles: tiles
+                };
+
+                this.datasetCache[key] = dataset;
+                return dataset
+            }
+        }
+
+        async readRootGroup() {
+
+            const genome = this.genome;
+            const rootGroup = this.groupCache["/"];
+            if (rootGroup) {
+                return rootGroup
+            } else {
+
+                const group = await this.readGroup("/");
+                const names = group["chromosomes"];
+                const maxZoomString = group["maxZoom"];
+
+                // Now parse out interesting attributes.
+                if (maxZoomString) {
+                    this.maxZoom = Number(maxZoomString);
+                }
+
+                const totalCountString = group["totalCount"];
+                if (totalCountString) {
+                    group.totalCount = Number(totalCountString);
+                }
+
+                // Chromosome names
+                const chrAliasTable = {};
+                if (names) {
+                    names.split(",").forEach(function (chr) {
+                        const canonicalName = genome.getChromosomeName(chr);
+                        chrAliasTable[canonicalName] = chr;
+                    });
+                }
+                this.chrAliasTable = chrAliasTable;
+
+                this.groupCache["/"] = group;
+                return group
+            }
+        }
+
+        async readGroup(name) {
+
+            const group = this.groupCache[name];
+            if (group) {
+                return group
+            } else {
+
+                await this.readHeader();
+                const indexEntry = this.groupIndex[name];
+                if (indexEntry === undefined) {
+                    return undefined
+                }
+
+                const data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {
+                    range: {
+                        start: indexEntry.position,
+                        size: indexEntry.size
+                    }
+                }));
+
+                if (!data) {
+                    return undefined
+                }
+
+                const binaryParser = new BinaryParser(new DataView(data));
+                const group = {name: name};
+                let nAttributes = binaryParser.getInt();
+                while (nAttributes-- > 0) {
+                    const key = binaryParser.getString();
+                    const value = binaryParser.getString();
+                    group[key] = value;
+                }
+                this.groupCache[name] = group;
+                return group
+            }
+        }
+
+
+        async readTiles(tileIndeces, nTracks) {
+
+            tileIndeces.sort(function (a, b) {
+                return a.position - b.position
+            });
+
+            tileIndeces = tileIndeces.filter(function (idx) {
+                return idx.size > 0
+            });
+
+            if (tileIndeces.length === 0) {
+                return Promise.resolve([])
+            }
+
+            const firstEntry = tileIndeces[0];
+            const lastEntry = tileIndeces[tileIndeces.length - 1];
+            const position = firstEntry.position;
+            const size = (lastEntry.position + lastEntry.size) - position;
+            const data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {
+                range: {
+                    start: position,
+                    size: size
+                }
+            }));
+
+            const tiles = [];
+
+            // Loop through and decode tiles
+            for (let indexEntry of tileIndeces) {
+                const start = indexEntry.position - position;
+                const size = indexEntry.size;
+                if (size > 0) {
+                    let tileData;
+                    if (this.compressed) {
+                        const plain = inflate_1$3(data.slice(start, start + size));
+                        tileData = plain.buffer;
+                    } else {
+                        tileData = data.slice(start, start + size);
+                    }
+
+                    const binaryParser = new BinaryParser(new DataView(tileData));
+                    const type = binaryParser.getString();
+                    let tile;
+                    switch (type) {
+                        case "fixedStep":
+                            tile = createFixedStep(binaryParser, nTracks);
+                            break
+                        case "variableStep":
+                            tile = createVariableStep(binaryParser, nTracks);
+                            break
+                        case "bed":
+                        case "bedWithName":
+                            tile = createBed(binaryParser, nTracks, type);
+                            break
+                        default:
+                            throw "Unknown tile type: " + type
+                    }
+                    tiles.push(tile);
+                }
+            }
+            return tiles
+        }
+
+        async readTile(indexEntry, nTracks) {
+
+            let data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {
+                range: {
+                    start: indexEntry.position,
+                    size: indexEntry.size
+                }
+            }));
+
+            if (this.compressed) {
+                const plain = inflate_1$3(data);
+                data = plain.buffer;
+            }
+
+            const binaryParser = new BinaryParser(new DataView(data));
+            const type = binaryParser.getString();
+            switch (type) {
+                case "fixedStep":
+                    return createFixedStep(binaryParser, nTracks)
+                case "variableStep":
+                    return createVariableStep(binaryParser, nTracks)
+                case "bed":
+                case "bedWithName":
+                    return createBed(binaryParser, nTracks, type)
+                default:
+                    throw "Unknown tile type: " + type
+            }
+        }
+
+    }
+
+    function createFixedStep(binaryParser, nTracks) {
+        const nPositions = binaryParser.getInt();
+        const start = binaryParser.getInt();
+        const span = binaryParser.getFloat();
+
+        const data = [];
+        let nt = nTracks;
+        while (nt-- > 0) {
+            let np = nPositions;
+            const dtrack = [];
+            while (np-- > 0) {
+                dtrack.push(binaryParser.getFloat());
+            }
+            data.push(dtrack);
+        }
+
+        return {
+            type: "fixedStep",
+            start: start,
+            span: span,
+            data: data,
+            nTracks: nTracks,
+            nPositions: nPositions
+        }
+    }
+
+    function createVariableStep(binaryParser, nTracks) {
+
+        const tileStart = binaryParser.getInt();
+        const span = binaryParser.getFloat();
+        const nPositions = binaryParser.getInt();
+        const start = [];
+
+        let np = nPositions;
+        while (np-- > 0) {
+            start.push(binaryParser.getInt());
+        }
+        binaryParser.getInt();  // # of samples, ignored but should === nTracks
+
+        const data = [];
+        let nt = nTracks;
+        while (nt-- > 0) {
+            np = nPositions;
+            const dtrack = [];
+            while (np-- > 0) {
+                dtrack.push(binaryParser.getFloat());
+            }
+            data.push(dtrack);
+        }
+
+        return {
+            type: "variableStep",
+            tileStart: tileStart,
+            span: span,
+            start: start,
+            data: data,
+            nTracks: nTracks,
+            nPositions: nPositions
+        }
+    }
+
+    function createBed(binaryParser, nTracks, type) {
+
+        const nPositions = binaryParser.getInt();
+
+        let n = nPositions;
+        const start = [];
+        while (n-- > 0) {
+            start.push(binaryParser.getInt());
+        }
+
+        n = nPositions;
+        const end = [];
+        while (n-- > 0) {
+            end.push(binaryParser.getInt());
+        }
+
+        binaryParser.getInt();  // # of samples, ignored but should === nTracks
+        const data = [];
+        let nt = nTracks;
+        while (nt-- > 0) {
+            let np = nPositions;
+            const dtrack = [];
+            while (np-- > 0) {
+                dtrack.push(binaryParser.getFloat());
+            }
+            data.push(dtrack);
+        }
+
+        if (type === "bedWithName") {
+            n = nPositions;
+            const name = [];
+            while (n-- > 0) {
+                name.push(binaryParser.getString());
+            }
+        }
+
+        return {
+            type: type,
+            start: start,
+            end: end,
+            data: data,
+            nTracks: nTracks,
+            nPositions: nPositions
+        }
+
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016 University of California San Diego
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class TDFSource {
+
+        constructor(config, genome) {
+            this.genome = genome;
+            this.windowFunction = config.windowFunction || "mean";
+            this.reader = new TDFReader(config, genome);
+            this.queryable = true;
+        }
+
+        async getFeatures({chr, start, end, bpPerPixel}) {
+
+            if (chr.toLowerCase() === "all") {
+                const wgFeatures = [];
+                const genome = this.genome;
+                const chrNames = this.genome.wgChromosomeNames;
+                if (chrNames) {
+                    for (let c of genome.wgChromosomeNames) {
+                        const len = genome.getChromosome(c).bpLength;
+                        bpPerPixel = len / 1000;
+                        const chrFeatures = await this._getFeatures(c, 0, len, bpPerPixel);
+                        if (chrFeatures) {
+                            for (let f of chrFeatures) {
+                                const wg = Object.assign({}, f);
+                                wg.chr = "all";
+                                wg.start = genome.getGenomeCoordinate(f.chr, f.start);
+                                wg.end = genome.getGenomeCoordinate(f.chr, f.end);
+                                wg._f = f;
+                                wgFeatures.push(wg);
+                            }
+                        }
+                    }
+                }
+                return wgFeatures
+
+            } else {
+                return this._getFeatures(chr, start, end, bpPerPixel)
+            }
+        }
+
+        async _getFeatures(chr, start, end, bpPerPixel) {
+            const genomicInterval = new GenomicInterval(chr, start, end);
+            const genome = this.genome;
+
+
+            if (!this.rootGroup) {
+                this.rootGroup = await this.reader.readRootGroup();
+                if (!this.normalizationFactor) {
+                    const totalCount = this.rootGroup.totalCount;
+                    if (totalCount) {
+                        this.normalizationFactor = 1.0e6 / totalCount;
+                    }
+                }
+            }
+
+            genomicInterval.bpPerPixel = bpPerPixel;
+            const zoom = zoomLevelForScale(chr, bpPerPixel, genome);
+            let queryChr = this.reader.chrAliasTable[chr];
+            let maxZoom = this.reader.maxZoom;
+            if (queryChr === undefined) queryChr = chr;
+            if (maxZoom === undefined) maxZoom = -1;
+
+            const wf = zoom > maxZoom ? "raw" : this.windowFunction;
+            const dataset = await this.reader.readDataset(queryChr, wf, zoom);
+            if (dataset == null) {
+                return []
+            }
+
+            const tileWidth = dataset.tileWidth;
+            const startTile = Math.floor(start / tileWidth);
+            const endTile = Math.floor(end / tileWidth);
+            const NTRACKS = 1;   // TODO read this
+            const tiles = await this.reader.readTiles(dataset.tiles.slice(startTile, endTile + 1), NTRACKS);
+            const features = [];
+            for (let tile of tiles) {
+                switch (tile.type) {
+                    case "bed":
+                        decodeBedTile(tile, chr, start, end, bpPerPixel, features);
+                        break
+                    case "variableStep":
+                        decodeVaryTile(tile, chr, start, end, bpPerPixel, features);
+                        break
+                    case "fixedStep":
+                        decodeFixedTile(tile, chr, start, end, bpPerPixel, features);
+                        break
+                    default:
+                        throw ("Unknown tile type: " + tile.type)
+                }
+            }
+            features.sort(function (a, b) {
+                return a.start - b.start
+            });
+
+            return features
+        }
+
+        get supportsWholeGenome() {
+            return true
+        }
+    }
+
+    function decodeBedTile(tile, chr, bpStart, bpEnd, bpPerPixel, features) {
+
+        const nPositions = tile.nPositions;
+        const starts = tile.start;
+        const ends = tile.end;
+        const data = tile.data[0];   // Single track for now
+        for (let i = 0; i < nPositions; i++) {
+            const s = starts[i];
+            const e = ends[i];
+            if (e < bpStart) continue
+            if (s > bpEnd) break
+            features.push({
+                chr: chr,
+                start: s,
+                end: e,
+                value: data[i]
+            });
+        }
+    }
+
+    function decodeVaryTile(tile, chr, bpStart, bpEnd, bpPerPixel, features) {
+
+        const nPositions = tile.nPositions;
+        const starts = tile.start;
+        const span = tile.span;
+        const data = tile.data[0];   // Single track for now
+        for (let i = 0; i < nPositions; i++) {
+            const s = starts[i];
+            const e = s + span;
+            if (e < bpStart) continue
+            if (s > bpEnd) break
+            features.push({
+                chr: chr,
+                start: s,
+                end: e,
+                value: data[i]
+            });
+        }
+    }
+
+    function decodeFixedTile(tile, chr, bpStart, bpEnd, bpPerPixel, features) {
+
+        const nPositions = tile.nPositions;
+        let s = tile.start;
+        const span = tile.span;
+        const data = tile.data[0];   // Single track for now
+
+        for (let i = 0; i < nPositions; i++) {
+            const e = s + span;
+            if (s > bpEnd) break
+            if (e >= bpStart) {
+                if (!Number.isNaN(data[i])) {
+                    features.push({
+                        chr: chr,
+                        start: s,
+                        end: e,
+                        value: data[i]
+                    });
+                }
+            }
+            s = e;
+        }
+    }
+
+
+    var log2 = Math.log(2);
+
+    function zoomLevelForScale(chr, bpPerPixel, genome) {
+
+        // Convert bpPerPixel to IGV "zoom" level.   This is a bit convoluted,  IGV computes zoom levels assuming
+        // display in a 700 pixel window.  The fully zoomed out view of a chromosome is zoom level "0".
+        // Zoom level 1 is magnified 2X,  and so forth
+
+        var chrSize = genome.getChromosome(chr).bpLength;
+
+        return Math.ceil(Math.log(Math.max(0, (chrSize / (bpPerPixel * 700)))) / log2)
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014-2015 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    /**
+     * feature source for features supplied directly, as opposed to reading and parsing from a file or webservice
+     *
+     * @param config
+     * @constructor
+     */
+    class StaticFeatureSource {
+
+        constructor(config, genome) {
+
+            this.config = config;
+            this.genome = genome;
+            this.queryable = false;
+            this.searchable = config.searchable !== false;  // searchable by default
+            this.updateFeatures(config.features);
+        }
+
+        updateFeatures(features) {
+            features = fixFeatures(features, this.genome);
+            packFeatures(features);
+            if (this.config.mappings) {
+                mapProperties(features, this.config.mappings);
+            }
+            this.featureCache = new FeatureCache$1(features, this.genome);
+
+            if (this.searchable || this.config.searchableFields) {
+                this.genome.addFeaturesToDB(features, this.config);
+            }
+        }
+
+        /**
+         * Required function for all data source objects.  Fetches features for the
+         * range requested.
+         *
+         * This function is complex due to the variety of reader types backing it, some indexed, some queryable,
+         * some not.
+         *
+         * @param chr
+         * @param start
+         * @param end
+         * @param bpPerPixel
+         */
+        async getFeatures({chr, start, end, bpPerPixel, visibilityWindow}) {
+
+            const genome = this.genome;
+            const queryChr = genome ? genome.getChromosomeName(chr) : chr;
+            const isWholeGenome = ("all" === queryChr.toLowerCase());
+
+            // Various conditions that can require a feature load
+            //   * view is "whole genome" but no features are loaded
+            //   * cache is disabled
+            //   * cache does not contain requested range
+            if (isWholeGenome) {
+                return computeWGFeatures(this.featureCache.getAllFeatures(), this.genome, this.maxWGCount)
+            } else {
+                return this.featureCache.queryFeatures(queryChr, start, end)
+            }
+        }
+
+        //
+        // supportsWholeGenome() {
+        //    return true
+        // }
+
+        getAllFeatures() {
+            return this.featureCache.getAllFeatures()
+        }
+
+        supportsWholeGenome() {
+            return true
+        }
+
+
+    }
+
+
+    /**
+     * This function is used to apply properties normally added during parsing to  features supplied directly in the
+     * config as an array of objects.   At the moment the only application is bedpe type features.
+     * @param features
+     */
+    function fixFeatures(features, genome) {
+
+        if (genome) {
+            for (let feature of features) {
+                feature.chr = genome.getChromosomeName(feature.chr);
+            }
+        }
+
+        return features
+    }
+
+
+
+    function mapProperties(features, mappings) {
+        let mappingKeys = Object.keys(mappings);
+        features.forEach(function (f) {
+            mappingKeys.forEach(function (key) {
+                f[key] = f[mappings[key]];
+            });
+        });
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014-2015 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const bbFormats = new Set(['bigwig', 'bw', 'bigbed', 'bb', 'biginteract', 'biggenepred', 'bignarrowpeak']);
+
+    function FeatureSource(config, genome) {
+
+        const format = config.format ? config.format.toLowerCase() : undefined;
+
+        if (config.features) {
+            return new StaticFeatureSource(config, genome)
+        } else if (bbFormats.has(format)) {
+            return new BWSource(config, genome)
+        } else if ("tdf" === format) {
+            return new TDFSource(config, genome)
+        } else {
+            return new TextFeatureSource(config, genome)
+        }
+    }
+
+    const appleCrayonColorName = 'nickel';
+
+    const ROI_DEFAULT_ALPHA = 2 / 16;
+
+    const ROI_DEFAULT_COLOR = appleCrayonRGBA(appleCrayonColorName, ROI_DEFAULT_ALPHA);
+    const ROI_DEFAULT_HEADER_COLOR = 'rgb(190,190,190)';
+
+    const ROI_USER_HEADER_DEFINED_COLOR = 'rgba(155,185,129)';
+    const ROI_USER_DEFINED_COLOR = ROI_DEFAULT_COLOR;
+
+    class ROISet {
+
+        constructor(config, genome) {
+
+            this.url = config.url;
+
+            if (config.name) {
+                this.name = config.name;
+            } else if (config.url && isFile(config.url)) {
+                this.name = config.url.name;
+            } else if (config.url && isString$2(config.url) && !config.url.startsWith("data:")) {
+                this.name = getFilename$2(config.url);
+            }
+
+            this.isUserDefined = config.isUserDefined;
+
+            if (config.features) {
+                this.featureSource = new DynamicFeatureSource(config.features, genome);
+            } else {
+                if (config.format) {
+                    config.format = config.format.toLowerCase();
+                } else {
+                    const filename = getFilename$2(config.url);
+                    config.format = inferFileFormat(filename);
+                }
+                this.featureSource = config.featureSource || FeatureSource(config, genome);
+            }
+
+            if (true === this.isUserDefined) {
+                this.color = config.color || ROI_USER_DEFINED_COLOR;
+                this.headerColor = ROI_USER_HEADER_DEFINED_COLOR;
+
+            } else {
+
+                this.color = config.color || ROI_DEFAULT_COLOR;
+                this.headerColor = ROI_DEFAULT_HEADER_COLOR;
+
+                // Use body color with alpha pinned to 1
+                // const [ r, g, b, discard ] = rgbaStringTokens(this.color)
+                // this.headerColor = `rgba(${ r },${ g },${ b },${ 1.0 })`
+
+            }
+        }
+
+        async getFeatures(chr, start, end) {
+            return this.featureSource.getFeatures({chr, start, end})
+        }
+
+        async getAllFeatures() {
+            return typeof this.featureSource.getAllFeatures === 'function' ? await this.featureSource.getAllFeatures() : {}
+        }
+
+        addFeature(feature) {
+            if (this.isUserDefined) {
+                this.featureSource.addFeature(feature);
+            } else {
+                console.error("Attempt to add ROI to non user-defined set");
+            }
+        }
+
+        removeFeature(feature) {
+            if (this.isUserDefined) {
+                this.featureSource.removeFeature(feature);
+            } else {
+                console.error("Attempt to remove ROI from non user-defined set");
+            }
+        }
+
+        toJSON() {
+            if (this.url) {
+                return {name: this.name, color: this.color, url: this.url, isUserDefined: this.isUserDefined}
+            } else {
+                const featureMap = this.featureSource.getAllFeatures();
+                const features = [];
+                for (let chr of Object.keys(featureMap)) {
+                    for (let f of featureMap[chr]) {
+                        features.push(f);
+                    }
+                }
+                return {name: this.name, color: this.color, features: features, isUserDefined: this.isUserDefined}
+            }
+        }
+
+        dispose() {
+            for (let key of Object.keys(this)) {
+                this[key] = undefined;
+            }
+        }
+
+    }
+
+    const SCREEN_COORDS_WIDTH_THRESHOLD = 3;
+
+    function screenCoordinates(regionStartBP, regionEndBP, bpStart, bpp) {
+
+        let xStart = Math.round((regionStartBP - bpStart) / bpp);
+        const xEnd = Math.round((regionEndBP - bpStart) / bpp);
+
+        let width = xEnd - xStart;
+
+        if (width < SCREEN_COORDS_WIDTH_THRESHOLD) {
+            width = SCREEN_COORDS_WIDTH_THRESHOLD;
+            xStart -= 1;
+        }
+
+        return {x: xStart, width}
+    }
+
+
+    /**
+     * Special feature source that allows addition of features dynamically
+     */
+    class DynamicFeatureSource {
+
+        constructor(features, genome) {
+            this.featureMap = {};
+            this.genome = genome;
+
+            for (let feature of features) {
+
+                // Store as canonical chr name (i.e. translate aliases)
+                const chrKey = genome ? genome.getChromosomeName(feature.chr) : feature.chr;
+
+                let featureList = this.featureMap[chrKey];
+                if (!featureList) {
+                    featureList = [];
+                    this.featureMap[chrKey] = featureList;
+                }
+                featureList.push(feature);
+            }
+
+            for (let key of Object.keys(this.featureMap)) {
+                this.featureMap[key].sort((a, b) => a.start - b.start);
+            }
+        }
+
+        getFeatures({chr, start, end}) {
+            if (chr.toLowerCase() === 'all') {
+                return computeWGFeatures(this.featureMap, this.genome)
+            } else {
+                // TODO -- this use of filter is O(N), and might not scale well for large feature lists.
+                const featureList = this.featureMap[chr];
+                return featureList ? featureList.filter(feature => feature.end > start && feature.start < end) : []
+            }
+        }
+
+        getAllFeatures() {
+            return this.featureMap
+        }
+
+        supportsWholeGenome() {
+            return true
+        }
+
+        addFeature(feature) {
+            let featureList = this.featureMap[feature.chr];
+            if (!featureList) {
+                featureList = [];
+                this.featureMap[feature.chr] = featureList;
+            }
+            featureList.push(feature);
+            featureList.sort((a, b) => a.start - b.start);
+        }
+
+        removeFeature({chr, start, end}) {
+
+            if (this.featureMap[chr]) {
+                const match = `${chr}-${start}-${end}`;
+                this.featureMap[chr] = this.featureMap[chr].filter(feature => match !== `${feature.chr}-${feature.start}-${feature.end}`);
+            }
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2017 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const RULER_SWEEPER_COLOR = 'rgba(68, 134, 247, 0.25)';
+
+    class RulerSweeper {
+
+        constructor(rulerViewport, column, browser, referenceFrame) {
+
+            this.rulerViewport = rulerViewport;
+
+            this.rulerSweeper = domUtils.div({class: 'igv-ruler-sweeper'});
+            column.appendChild(this.rulerSweeper);
+
+            this.browser = browser;
+            this.referenceFrame = referenceFrame;
+
+            this.isMouseHandlers = undefined;
+
+            this.addBrowserObserver();
+        }
+
+        addBrowserObserver() {
+
+            const observerHandler = () => {
+                if (this.referenceFrame) {
+                    GenomeUtils.isWholeGenomeView(this.referenceFrame.chr) ? this.removeMouseHandlers() : this.addMouseHandlers();
+                }
+            };
+
+            // Viewport Content
+            this.boundObserverHandler = observerHandler.bind(this);
+            this.browser.on('locuschange', this.boundObserverHandler);
+
+        }
+
+        removeBrowserObserver() {
+            this.browser.off('locuschange', this.boundObserverHandler);
+        }
+
+        addMouseHandlers() {
+
+            if (true === this.isMouseHandlers) {
+                return
+            }
+
+            const threshold = 1;
+
+            let isMouseDown;
+            let isMouseIn;
+            let mouseDownX;
+            let left;
+            let width;
+            let dx;
+
+            // Viewport Content
+            this.boundContentMouseDownHandler = contentMouseDownHandler.bind(this);
+            this.rulerViewport.contentDiv.addEventListener('mousedown', this.boundContentMouseDownHandler);
+
+            function contentMouseDownHandler(event) {
+
+                isMouseDown = true;
+                isMouseIn = true;
+
+                const {x} = domUtils.translateMouseCoordinates(event, this.rulerViewport.contentDiv);
+                left = mouseDownX = x;
+
+                width = threshold;
+
+
+                this.rulerSweeper.style.display = 'block';
+                this.rulerSweeper.style.backgroundColor = true === event.shiftKey ? ROI_USER_DEFINED_COLOR : RULER_SWEEPER_COLOR;
+
+                this.rulerSweeper.style.left = `${left}px`;
+                this.rulerSweeper.style.width = `${width}px`;
+
+            }
+
+            // Document
+            this.boundDocumentMouseMoveHandler = documentMouseMoveHandler.bind(this);
+            document.addEventListener('mousemove', this.boundDocumentMouseMoveHandler);
+
+            function documentMouseMoveHandler(event) {
+
+                let mouseCurrentX;
+
+                if (isMouseDown && isMouseIn) {
+
+                    const {x} = domUtils.translateMouseCoordinates(event, this.rulerViewport.contentDiv);
+                    mouseCurrentX = Math.max(Math.min(x, this.rulerViewport.contentDiv.clientWidth), 0);
+
+                    dx = mouseCurrentX - mouseDownX;
+
+                    width = Math.abs(dx);
+                    this.rulerSweeper.style.width = `${width}px`;
+
+                    if (dx < 0) {
+                        left = mouseDownX + dx;
+                        this.rulerSweeper.style.left = `${left}px`;
+                    }
+
+                }
+
+            }
+
+            this.boundDocumentMouseUpHandler = documentMouseUpHandler.bind(this);
+            document.addEventListener('mouseup', this.boundDocumentMouseUpHandler);
+
+            function documentMouseUpHandler(event) {
+
+                let genomicExtent;
+
+                if (true === isMouseDown && true === isMouseIn) {
+
+                    isMouseDown = isMouseIn = undefined;
+
+                    this.rulerSweeper.style.display = 'none';
+
+                    if (width > threshold) {
+
+                        genomicExtent =
+                            {
+                                start: Math.floor(this.referenceFrame.calculateEnd(left)),
+                                end: Math.floor(this.referenceFrame.calculateEnd(left + width)),
+                            };
+
+
+                        const shiftKeyPressed = event.shiftKey;
+
+                        if (true === shiftKeyPressed) {
+                            this.browser.roiManager.updateUserDefinedROISet(Object.assign({chr: this.referenceFrame.chr}, genomicExtent));
+                        } else {
+
+                            validateGenomicExtent(this.browser.genome.getChromosome(this.referenceFrame.chr).bpLength, genomicExtent, this.browser.minimumBases());
+                            updateReferenceFrame(this.referenceFrame, genomicExtent, this.rulerViewport.contentDiv.clientWidth);
+                            this.browser.updateViews(this.referenceFrame);
+
+                        }
+
+                    }
+
+                }
+
+            }
+
+            this.isMouseHandlers = true;
+        }
+
+        removeMouseHandlers() {
+            this.rulerViewport.contentDiv.removeEventListener('mousedown', this.boundContentMouseDownHandler);
+            document.removeEventListener('mousemove', this.boundDocumentMouseMoveHandler);
+            document.removeEventListener('mouseup', this.boundDocumentMouseUpHandler);
+            this.isMouseHandlers = false;
+        }
+
+        dispose() {
+            this.removeBrowserObserver();
+            this.removeMouseHandlers();
+            this.rulerSweeper.remove();
+        }
+
+    }
+
+    function updateReferenceFrame(referenceFrame, genomicExtent, pixelWidth) {
+        referenceFrame.start = Math.round(genomicExtent.start);
+        referenceFrame.end = Math.round(genomicExtent.end);
+        referenceFrame.bpPerPixel = (referenceFrame.end - referenceFrame.start) / pixelWidth;
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016 University of California San Diego
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+
+    class PairedAlignment {
+
+        constructor(firstAlignment) {
+
+            this.paired = true;
+            this.firstAlignment = firstAlignment;
+            this.chr = firstAlignment.chr;
+            this.readName = firstAlignment.readName;
+
+            if (firstAlignment.start < firstAlignment.mate.position) {
+                this.start = firstAlignment.start;
+                this.scStart = firstAlignment.scStart;
+                this.connectingStart = firstAlignment.start + firstAlignment.lengthOnRef;
+                this.connectingEnd = firstAlignment.mate.position;
+            } else {
+                this.start = firstAlignment.mate.position;
+                this.scStart = this.start;
+                this.connectingStart = firstAlignment.mate.position;
+                this.connectingEnd = firstAlignment.start;
+            }
+
+            this.end = Math.max(firstAlignment.mate.position, firstAlignment.start + firstAlignment.lengthOnRef);  // Approximate
+            this.lengthOnRef = this.end - this.start;
+
+            let scEnd = Math.max(this.end, firstAlignment.scStart + firstAlignment.scLengthOnRef);
+            this.scLengthOnRef = scEnd - this.scStart;
+
+        }
+
+        setSecondAlignment(secondAlignment) {
+
+            // TODO -- check the chrs are equal,  error otherwise
+            this.secondAlignment = secondAlignment;
+            const firstAlignment = this.firstAlignment;
+
+            if (secondAlignment.start > firstAlignment.start) {
+                this.connectingEnd = secondAlignment.start;
+            } else {
+                this.connectingStart = secondAlignment.start + secondAlignment.lengthOnRef;
+            }
+
+            this.start = Math.min(firstAlignment.start, secondAlignment.start);
+            this.end = Math.max(firstAlignment.start + firstAlignment.lengthOnRef, secondAlignment.start + secondAlignment.lengthOnRef);
+            this.lengthOnRef = this.end - this.start;
+
+            this.scStart = Math.min(firstAlignment.scStart, secondAlignment.scStart);
+            const scEnd = Math.max(firstAlignment.scStart + firstAlignment.scLengthOnRef, secondAlignment.scStart + secondAlignment.scLengthOnRef);
+            this.scLengthOnRef = scEnd - this.scStart;
+
+        }
+
+        containsLocation(genomicLocation, showSoftClips) {
+            const s = showSoftClips ? this.scStart : this.start;
+            const l = showSoftClips ? this.scLengthOnRef : this.lengthOnRef;
+            return (genomicLocation >= s && genomicLocation <= (s + l))
+        }
+
+        alignmentContaining(genomicLocation, showSoftClips) {
+            if (this.firstAlignment.containsLocation(genomicLocation, showSoftClips)) {
+                return this.firstAlignment
+            } else if (this.secondAlignment && this.secondAlignment.containsLocation(genomicLocation, showSoftClips)) {
+                return this.secondAlignment
+            } else {
+                return undefined
+            }
+        }
+
+        popupData(genomicLocation) {
+
+            let nameValues = this.firstAlignment.popupData(genomicLocation);
+
+            if (this.secondAlignment) {
+                nameValues.push("-------------------------------");
+                nameValues = nameValues.concat(this.secondAlignment.popupData(genomicLocation));
+            }
+            return nameValues
+        }
+
+        isPaired() {
+            return true // By definition
+        }
+
+        isMateMapped() {
+            return true // By definition
+        }
+
+        isProperPair() {
+            return this.firstAlignment.isProperPair()
+        }
+
+        get fragmentLength() {
+            return Math.abs(this.firstAlignment.fragmentLength)
+        }
+
+        firstOfPairStrand() {
+
+            if (this.firstAlignment.isFirstOfPair()) {
+                return this.firstAlignment.strand
+            } else if (this.secondAlignment && this.secondAlignment.isFirstOfPair()) {
+                return this.secondAlignment.strand
+            } else {
+                return this.firstAlignment.mate.strand    // Assumption is mate is first-of-pair
+            }
+        }
+
+        hasTag(str) {
+            return this.firstAlignment.hasTag(str) || (this.secondAlignment &&  this.secondAlignment.hasTag(str))
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class BamAlignmentRow {
+
+        constructor() {
+
+            this.alignments = [];
+            this.score = undefined;
+        }
+
+        findAlignment(genomicLocation) {
+
+            const alignmentContains = (a, genomicLocation) => {
+                return genomicLocation >= a.start && genomicLocation < a.start + a.lengthOnRef
+            };
+
+            // find single alignment that overlaps sort location
+            let centerAlignment;
+            for (let i = 0; i < this.alignments.length; i++) {
+                const a = this.alignments[i];
+                if (genomicLocation >= a.start && genomicLocation < a.start + a.lengthOnRef) {
+                    if (a.paired) {
+                        if (a.firstAlignment && alignmentContains(a.firstAlignment, genomicLocation)) {
+                            centerAlignment = a.firstAlignment;
+                        } else if (a.secondAlignment && alignmentContains(a.secondAlignment, genomicLocation)) {
+                            centerAlignment = a.secondAlignment;
+                        }
+                    } else {
+                        centerAlignment = a;
+                    }
+                    break
+                }
+            }
+
+            return centerAlignment
+
+        }
+
+        getSortValue({position, option, tag}, alignmentContainer) {
+
+            if (!option) option = "BASE";
+
+            const alignment = this.findAlignment(position);
+            if (undefined === alignment) {  // This condition should never occur
+                return Number.MAX_VALUE
+            }
+
+            switch (option) {
+                case "NUCLEOTIDE":
+                case "BASE": {
+                    return calculateBaseScore(alignment, alignmentContainer, position)
+                }
+                case "STRAND":
+                    return alignment.strand ? 1 : -1
+                case "START":
+                    return alignment.start
+                case "TAG": {
+                    return alignment.tags()[tag]
+                }
+                case "READ_NAME":
+                    return alignment.readName
+                case "INSERT_SIZE":
+                    return -Math.abs(alignment.fragmentLength)
+                case "GAP_SIZE":
+                    return -alignment.gapSizeAt(position)
+                case "MATE_CHR":
+                    return alignment.mate
+                case "MQ":
+                    return alignment.mq === undefined ? Number.MAX_VALUE : -alignment.mq
+                case "ALIGNED_READ_LENGTH":
+                    return -alignment.lengthOnRef
+                default:
+                    return Number.MAX_VALUE
+            }
+
+
+            function calculateBaseScore(alignment, alignmentContainer, genomicLocation) {
+
+                let reference;
+                const idx = Math.floor(genomicLocation) - alignmentContainer.start;
+                if (idx < alignmentContainer.sequence.length) {
+                    reference = alignmentContainer.sequence.charAt(idx);
+                }
+                if (!reference) {
+                    return 0
+                }
+                const base = alignment.readBaseAt(genomicLocation);
+                const quality = alignment.readBaseQualityAt(genomicLocation);
+
+                const coverageMap = alignmentContainer.coverageMap;
+                const coverageMapIndex = Math.floor(genomicLocation - coverageMap.bpStart);
+                const coverage = coverageMap.coverage[coverageMapIndex];
+
+                // Insertions.  These are additive with base scores as they occur between bases, so you can have a
+                // base mismatch AND an insertion
+                let baseScore = 0;
+                if (alignment.insertions) {
+                    for (let ins of alignment.insertions) {
+                        if (ins.start === genomicLocation) {
+                            baseScore = -coverage.ins;
+                        }
+                    }
+                }
+
+
+                if (!base) {
+                    // Either deletion or skipped (splice junction)
+                    const delCount = coverage.del;
+                    if (delCount > 0) {
+                        baseScore -= delCount;
+                    } else if (baseScore === 0) {    // Don't modify insertion score, if any
+                        baseScore = 1;
+                    }
+                } else {
+                    reference = reference.toUpperCase();
+                    if ('N' === base && baseScore === 0) {
+                        baseScore = 2;
+                    } else if ((reference === base || '=' === base) && baseScore === 0) {
+                        baseScore = 4 - quality / 1000;
+                    } else if ("X" === base || reference !== base) {
+                        const count = coverage["pos" + base] + coverage["neg" + base];
+                        baseScore -= (count + (quality / 1000));
+                    }
+                }
+
+
+                return baseScore
+            }
+        }
+
+
+    }
+
+    const alignmentSpace = 2;
+
+    function canBePaired(alignment) {
+        return alignment.isPaired() &&
+            alignment.mate &&
+            alignment.isMateMapped() &&
+            alignment.chr === alignment.mate.chr &&
+            (alignment.isFirstOfPair() || alignment.isSecondOfPair()) && !(alignment.isSecondary() || alignment.isSupplementary())
+    }
+
+
+    function pairAlignments(rows) {
+
+        const pairCache = {};
+        const result = [];
+
+        for (let row of rows) {
+            for (let alignment of row.alignments) {
+                if (canBePaired(alignment)) {
+                    let pairedAlignment = pairCache[alignment.readName];
+                    if (pairedAlignment) {
+                        pairedAlignment.setSecondAlignment(alignment);
+                        pairCache[alignment.readName] = undefined;   // Don't need to track this anymore.
+                    } else {
+                        pairedAlignment = new PairedAlignment(alignment);
+                        pairCache[alignment.readName] = pairedAlignment;
+                        result.push(pairedAlignment);
+                    }
+                } else {
+                    result.push(alignment);
+                }
+            }
+        }
+        return result
+    }
+
+    function unpairAlignments(rows) {
+        const result = [];
+        for (let row of rows) {
+            for (let alignment of row.alignments) {
+                if (alignment instanceof PairedAlignment) {
+                    if (alignment.firstAlignment) result.push(alignment.firstAlignment);  // shouldn't need the null test
+                    if (alignment.secondAlignment) result.push(alignment.secondAlignment);
+                } else {
+                    result.push(alignment);
+                }
+            }
+        }
+        return result
+    }
+
+    function packAlignmentRows(alignments, start, end, showSoftClips) {
+
+        //console.log(`packAlignmentRows ${start} ${end}`)
+        //const t0 = Date.now()
+
+        if (!alignments) {
+            return undefined
+        } else if (alignments.length === 0) {
+            return []
+        } else {
+            alignments.sort(function (a, b) {
+                return showSoftClips ? a.scStart - b.scStart : a.start - b.start
+            });
+
+            const packedAlignmentRows = [];
+            let alignmentRow;
+            let nextStart = 0;
+            let nextIDX = 0;
+            const allocated = new Set();
+            const startNewRow = () => {
+                alignmentRow = new BamAlignmentRow();
+                packedAlignmentRows.push(alignmentRow);
+                nextStart = 0;
+                nextIDX = 0;
+                allocated.clear();
+            };
+            startNewRow();
+
+            while (alignments.length > 0) {
+                if (nextIDX >= 0 && nextIDX < alignments.length) {
+                    const alignment = alignments[nextIDX];
+                    allocated.add(alignment);
+                    alignmentRow.alignments.push(alignment);
+                    nextStart = showSoftClips ?
+                        alignment.scStart + alignment.scLengthOnRef + alignmentSpace :
+                        alignment.start + alignment.lengthOnRef + alignmentSpace;
+                    nextIDX = binarySearch$1(alignments, (a) => (showSoftClips ? a.scStart : a.start) > nextStart, nextIDX);
+                } else {
+                    // Remove allocated alignments and start new row
+                    alignments = alignments.filter(a => !allocated.has(a));
+                    startNewRow();
+                }
+            }
+            //console.log(`Done in ${Date.now() - t0} ms`)
+            return packedAlignmentRows
+        }
+    }
+
+
+    /**
+     * Return 0 <= i <= array.length such that !pred(array[i - 1]) && pred(array[i]).
+     *
+     * returns an index 0 ≤ i ≤ array.length such that the given predicate is false for array[i - 1] and true for array[i]* *
+     */
+    function binarySearch$1(array, pred, min) {
+        let lo = min - 1, hi = array.length;
+        while (1 + lo < hi) {
+            const mi = lo + ((hi - lo) >> 1);
+            if (pred(array[mi])) {
+                hi = mi;
+            } else {
+                lo = mi;
+            }
+        }
+        return hi
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016 University of California San Diego
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+
+    class AlignmentContainer {
+
+        //            this.config.samplingWindowSize, this.config.samplingDepth,
+        //             this.config.pairsSupported, this.config.alleleFreqThreshold)
+        constructor(chr, start, end, {samplingWindowSize, samplingDepth, pairsSupported, alleleFreqThreshold}) {
+
+            this.chr = chr;
+            this.start = Math.floor(start);
+            this.end = Math.ceil(end);
+            this.length = (end - start);
+
+            this.alleleFreqThreshold = alleleFreqThreshold === undefined ? 0.2 : alleleFreqThreshold;
+
+            this.coverageMap = new CoverageMap(chr, start, end, this.alleleFreqThreshold);
+            this.alignments = [];
+            this.downsampledIntervals = [];
+
+            this.samplingWindowSize = samplingWindowSize === undefined ? 100 : samplingWindowSize;
+            this.samplingDepth = samplingDepth === undefined ? 1000 : samplingDepth;
+
+            this.pairsSupported = pairsSupported === undefined ? true : pairsSupported;
+            this.paired = false;  // false until proven otherwise
+            this.pairsCache = {};  // working cache of paired alignments by read name
+
+            this.downsampledReads = new Set();
+
+            this.currentBucket = new DownsampleBucket(this.start, this.start + this.samplingWindowSize, this);
+
+            this.filter = function filter(alignment) {         // TODO -- pass this in
+                return alignment.isMapped() && !alignment.isFailsVendorQualityCheck()
+            };
+
+        }
+
+        push(alignment) {
+
+            if (this.filter(alignment) === false) return
+
+            this.coverageMap.incCounts(alignment);   // Count coverage before any downsampling
+
+            if (this.pairsSupported && this.downsampledReads.has(alignment.readName)) {
+                return   // Mate already downsampled -- pairs are treated as a single alignment for downsampling
+            }
+
+            if (alignment.start >= this.currentBucket.end) {
+                this.finishBucket();
+                this.currentBucket = new DownsampleBucket(alignment.start, alignment.start + this.samplingWindowSize, this);
+            }
+
+            this.currentBucket.addAlignment(alignment);
+
+        }
+
+        forEach(callback) {
+            this.alignments.forEach(callback);
+        }
+
+        finish() {
+
+            if (this.currentBucket !== undefined) {
+                this.finishBucket();
+            }
+
+            this.alignments.sort(function (a, b) {
+                return a.start - b.start
+            });
+
+            this.pairsCache = undefined;
+            this.downsampledReads = undefined;
+        }
+
+        contains(chr, start, end) {
+            return this.chr === chr &&
+                this.start <= start &&
+                this.end >= end
+        }
+
+        hasDownsampledIntervals() {
+            return this.downsampledIntervals && this.downsampledIntervals.length > 0
+        }
+
+        finishBucket() {
+            this.alignments = this.alignments.concat(this.currentBucket.alignments);
+            if (this.currentBucket.downsampledCount > 0) {
+                this.downsampledIntervals.push(new DownsampledInterval(
+                    this.currentBucket.start,
+                    this.currentBucket.end,
+                    this.currentBucket.downsampledCount));
+            }
+            this.paired = this.paired || this.currentBucket.paired;
+        }
+
+        setViewAsPairs(bool) {
+            let alignments;
+            if (bool) {
+                alignments = pairAlignments(this.packedAlignmentRows);
+            } else {
+                alignments = unpairAlignments(this.packedAlignmentRows);
+            }
+            this.packedAlignmentRows = packAlignmentRows(alignments, this.start, this.end);
+        }
+
+        setShowSoftClips(bool) {
+            const alignments = this.allAlignments();
+            this.packedAlignmentRows = packAlignmentRows(alignments, this.start, this.end, bool);
+        }
+
+        repack(bpPerPixel, showSoftClips) {
+            const alignments = this.allAlignments();
+            this.packedAlignmentRows = packAlignmentRows(alignments, this.start, this.end, showSoftClips);
+
+        }
+
+        allAlignments() {
+            const alignments = [];
+            for (let row of this.packedAlignmentRows) {
+                for (let alignment of row.alignments) {
+                    alignments.push(alignment);
+                }
+            }
+            return alignments
+        }
+
+        getMax(start, end) {
+            return this.coverageMap.getMax(start, end)
+        }
+
+        sortRows(options) {
+
+            const newRows = [];
+            const undefinedRow = [];
+            for (let row of this.packedAlignmentRows) {
+                const alignment = row.findAlignment(options.position);
+                if (undefined !== alignment) {
+                    newRows.push(row);
+                } else {
+                    undefinedRow.push(row);
+                }
+            }
+
+            newRows.sort((rowA, rowB) => {
+                const direction = options.direction;
+                const rowAValue = rowA.getSortValue(options, this);
+                const rowBValue = rowB.getSortValue(options, this);
+
+                if (rowBValue === undefined && rowBValue !== undefined) return 1
+                else if (rowAValue !== undefined && rowBValue === undefined) return -1
+
+                const i = rowAValue > rowBValue ? 1 : (rowAValue < rowBValue ? -1 : 0);
+                return true === direction ? i : -i
+            });
+
+            for (let row of undefinedRow) {
+                newRows.push(row);
+            }
+
+            this.packedAlignmentRows = newRows;
+        }
+
+    }
+
+
+    class DownsampleBucket {
+
+        constructor(start, end, alignmentContainer) {
+
+            this.start = start;
+            this.end = end;
+            this.alignments = [];
+            this.downsampledCount = 0;
+            this.samplingDepth = alignmentContainer.samplingDepth;
+            this.pairsSupported = alignmentContainer.pairsSupported;
+            this.downsampledReads = alignmentContainer.downsampledReads;
+            this.pairsCache = alignmentContainer.pairsCache;
+        }
+
+        addAlignment(alignment) {
+
+            var idx, replacedAlignment, pairedAlignment;
+
+            if (this.pairsSupported && canBePaired(alignment)) {
+                pairedAlignment = this.pairsCache[alignment.readName];
+                if (pairedAlignment) {
+                    // Not subject to downsampling, just update the existing alignment
+                    pairedAlignment.setSecondAlignment(alignment);
+                    this.pairsCache[alignment.readName] = undefined;   // Don't need to track this anymore. NOTE: Don't "delete", causes runtime performance issues
+                    return
+                }
+            }
+
+            if (this.alignments.length < this.samplingDepth) {
+
+                if (this.pairsSupported && canBePaired(alignment)) {
+
+                    // First alignment in a pair
+                    pairedAlignment = new PairedAlignment(alignment);
+                    this.paired = true;
+                    this.pairsCache[alignment.readName] = pairedAlignment;
+                    this.alignments.push(pairedAlignment);
+
+                } else {
+                    this.alignments.push(alignment);
+                }
+
+            } else {
+
+                idx = Math.floor(Math.random() * (this.samplingDepth + this.downsampledCount - 1));
+
+                if (idx < this.samplingDepth) {
+
+                    // Keep the new item
+                    //  idx = Math.floor(Math.random() * (this.alignments.length - 1));
+                    replacedAlignment = this.alignments[idx];   // To be replaced
+
+                    if (this.pairsSupported && canBePaired(alignment)) {
+
+                        if (this.pairsCache[replacedAlignment.readName] !== undefined) {
+                            this.pairsCache[replacedAlignment.readName] = undefined;
+                        }
+
+                        pairedAlignment = new PairedAlignment(alignment);
+                        this.paired = true;
+                        this.pairsCache[alignment.readName] = pairedAlignment;
+                        this.alignments[idx] = pairedAlignment;
+
+                    } else {
+                        this.alignments[idx] = alignment;
+                    }
+                    this.downsampledReads.add(replacedAlignment.readName);
+
+                } else {
+                    this.downsampledReads.add(alignment.readName);
+                }
+
+                this.downsampledCount++;
+            }
+
+
+        }
+    }
+
+    class CoverageMap {
+
+        constructor(chr, start, end, alleleFreqThreshold) {
+
+            this.chr = chr;
+            this.bpStart = start;
+            this.length = (end - start);
+
+            this.coverage = new Array(this.length);
+            this.maximum = 0;
+
+            this.threshold = alleleFreqThreshold;
+            this.qualityWeight = true;
+        }
+
+        /**
+         * Return the maximum coverage value between start and end.  This is used for autoscaling.
+         * @param start
+         * @param end
+         */
+        getMax(start, end) {
+            let max = 0;
+            const len = this.coverage.length;
+            for (let i = 0; i < len; i++) {
+                const pos = this.bpStart + i;
+                if (pos > end) break
+                const cov = this.coverage[i];
+                if (pos >= start && cov) {
+                    max = Math.max(max, cov.total);
+                }
+            }
+            return max
+        }
+
+        incCounts(alignment) {
+
+            var self = this;
+
+            if (alignment.blocks === undefined) {
+                incBlockCount(alignment);
+            } else {
+                alignment.blocks.forEach(function (block) {
+                    incBlockCount(block);
+                });
+            }
+
+            if (alignment.gaps) {
+                for (let del of alignment.gaps) {
+                    if (del.type === 'D') {
+                        const offset = del.start - self.bpStart;
+                        for (let i = offset; i < offset + del.len; i++) {
+                            if (i < 0) continue
+                            if (!this.coverage[i]) {
+                                this.coverage[i] = new Coverage(self.threshold);
+                            }
+                            this.coverage[i].del++;
+                        }
+                    }
+                }
+            }
+
+            if (alignment.insertions) {
+                for (let del of alignment.insertions) {
+                    const i = del.start - this.bpStart;
+                    if (i < 0) continue
+                    if (!this.coverage[i]) {
+                        this.coverage[i] = new Coverage(self.threshold);
+                    }
+                    this.coverage[i].ins++;
+                }
+            }
+
+            function incBlockCount(block) {
+
+                if ('S' === block.type) return
+
+                const seq = alignment.seq;
+                const qual = alignment.qual;
+                const seqOffset = block.seqOffset;
+
+                for (let i = block.start - self.bpStart, j = 0; j < block.len; i++, j++) {
+
+                    if (!self.coverage[i]) {
+                        self.coverage[i] = new Coverage(self.threshold);
+                    }
+
+                    const base = (seq == undefined) ? "N" : seq.charAt(seqOffset + j);
+                    const key = (alignment.strand) ? "pos" + base : "neg" + base;
+                    const q = qual && seqOffset + j < qual.length ? qual[seqOffset + j] : 30;
+
+                    self.coverage[i][key] += 1;
+                    self.coverage[i]["qual" + base] += q;
+
+                    self.coverage[i].total += 1;
+                    self.coverage[i].qual += q;
+
+                    self.maximum = Math.max(self.coverage[i].total, self.maximum);
+
+                }
+            }
+        }
+    }
+
+
+    class Coverage {
+
+        constructor(alleleThreshold) {
+
+            this.qualityWeight = true;
+
+            this.posA = 0;
+            this.negA = 0;
+
+            this.posT = 0;
+            this.negT = 0;
+
+            this.posC = 0;
+            this.negC = 0;
+            this.posG = 0;
+
+            this.negG = 0;
+
+            this.posN = 0;
+            this.negN = 0;
+
+            this.pos = 0;
+            this.neg = 0;
+
+            this.qualA = 0;
+            this.qualT = 0;
+            this.qualC = 0;
+            this.qualG = 0;
+            this.qualN = 0;
+
+            this.qual = 0;
+
+            this.total = 0;
+            this.del = 0;
+            this.ins = 0;
+
+            this.threshold = alleleThreshold;
+        }
+
+        hoverText() {
+            const pos = this.posA + this.posT + this.posC + this.posG + this.posN;
+            const neg = this.negA + this.negT + this.negC + this.negG + this.negN;
+            return `${this.total} (${pos}+, ${neg}-)`
+        }
+
+        isMismatch(refBase) {
+            const threshold = this.threshold * ((this.qualityWeight && this.qual) ? this.qual : this.total);
+            let mismatchQualitySum = 0;
+            for (let base of ["A", "T", "C", "G"]) {
+                if (base !== refBase) {
+                    mismatchQualitySum += ((this.qualityWeight && this.qual) ? this["qual" + base] : (this["pos" + base] + this["neg" + base]));
+                }
+            }
+            return mismatchQualitySum >= threshold
+        }
+    }
+
+    class DownsampledInterval {
+
+        constructor(start, end, counts) {
+            this.start = start;
+            this.end = end;
+            this.counts = counts;
+        }
+
+        popupData(genomicLocation) {
+            return [
+                {name: "start", value: this.start + 1},
+                {name: "end", value: this.end},
+                {name: "# downsampled:", value: this.counts}]
+        }
+    }
+
+    class SupplementaryAlignment {
+
+        constructor(rec) {
+            const tokens = rec.split(',');
+            this.chr = tokens[0];
+            this.start = parseInt(tokens[1]);
+            this.strand = tokens[2].charAt(0);
+            this.mapQ = parseInt(tokens[4]);
+            this.numMismatches = parseInt(tokens[5]);
+            this.lenOnRef = BamUtils.computeLengthOnReference(tokens[3]);
+        }
+
+        printString() {
+            return this.chr + ":" + numberFormatter$1(this.start) + "-" + numberFormatter$1(this.start + this.lenOnRef)
+                + " (" + this.strand + ") = " + numberFormatter$1(this.lenOnRef) + "bp @MAPQ: " + this.mapQ + " NM: " + this.numMismatches
+        }
+    }
+
+    function createSupplementaryAlignments(str) {
+        const tokens = str.split(';');
+        return tokens.filter(t => t.length > 0).map(str => new SupplementaryAlignment(str))
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const READ_PAIRED_FLAG = 0x1;
+    const PROPER_PAIR_FLAG = 0x2;
+    const READ_UNMAPPED_FLAG = 0x4;
+    const MATE_UNMAPPED_FLAG = 0x8;
+    const READ_STRAND_FLAG$2 = 0x10;
+    const MATE_STRAND_FLAG$2 = 0x20;
+    const FIRST_OF_PAIR_FLAG = 0x40;
+    const SECOND_OF_PAIR_FLAG = 0x80;
+    const SECONDARY_ALIGNMNET_FLAG = 0x100;
+    const READ_FAILS_VENDOR_QUALITY_CHECK_FLAG = 0x200;
+    const DUPLICATE_READ_FLAG = 0x400;
+    const SUPPLEMENTARY_ALIGNMENT_FLAG = 0x800;
+    const ELEMENT_SIZE = {
+        c: 1,
+        C: 1,
+        s: 2,
+        S: 2,
+        i: 4,
+        I: 4,
+        f: 4
+    };
+
+    const MAX_CIGAR = 50;
+
+    /**
+     * readName
+     * chr
+     * cigar
+     * lengthOnRef
+     * start
+     * seq
+     * qual
+     * mq
+     * strand
+     * blocks
+     */
+
+    class BamAlignment {
+
+        constructor() {
+            this.hidden = false;
+        }
+
+        isMapped() {
+            return (this.flags & READ_UNMAPPED_FLAG) === 0
+        }
+
+        isPaired() {
+            return (this.flags & READ_PAIRED_FLAG) !== 0
+        }
+
+        isProperPair() {
+            return (this.flags & PROPER_PAIR_FLAG) !== 0
+        }
+
+        isFirstOfPair() {
+            return (this.flags & FIRST_OF_PAIR_FLAG) !== 0
+        }
+
+        isSecondOfPair() {
+            return (this.flags & SECOND_OF_PAIR_FLAG) !== 0
+        }
+
+        isSecondary() {
+            return (this.flags & SECONDARY_ALIGNMNET_FLAG) !== 0
+        }
+
+        isSupplementary() {
+            return (this.flags & SUPPLEMENTARY_ALIGNMENT_FLAG) !== 0
+        }
+
+        isFailsVendorQualityCheck() {
+            return (this.flags & READ_FAILS_VENDOR_QUALITY_CHECK_FLAG) !== 0
+        }
+
+        isDuplicate() {
+            return (this.flags & DUPLICATE_READ_FLAG) !== 0
+        }
+
+        isMateMapped() {
+            return (this.flags & MATE_UNMAPPED_FLAG) === 0
+        }
+
+        isNegativeStrand() {
+            return (this.flags & READ_STRAND_FLAG$2) !== 0
+        }
+
+        isMateNegativeStrand() {
+            return (this.flags & MATE_STRAND_FLAG$2) !== 0
+        }
+
+        hasTag(tag) {
+            const tmpTags = this.tagDict || decodeTags(this.tagBA);
+            return tmpTags.hasOwnProperty(tag)
+        }
+
+        tags() {
+            if (!this.tagDict) {
+                if (this.tagBA) {
+                    this.tagDict = decodeTags(this.tagBA);
+                    this.tagBA = undefined;
+                } else {
+                    this.tagDict = {};  // Mark so we don't try again.  The record has no tags
+                }
+            }
+            return this.tagDict
+        }
+
+        /**
+         * Does alignment (or alignment extended by soft clips) contain the genomic location?
+         *
+         * @param genomicLocation
+         * @param showSoftClips
+         * @returns {boolean|boolean}
+         */
+        containsLocation(genomicLocation, showSoftClips) {
+            const s = showSoftClips ? this.scStart : this.start;
+            const l = showSoftClips ? this.scLengthOnRef : this.lengthOnRef;
+            return (genomicLocation >= s && genomicLocation <= (s + l))
+        }
+
+        popupData(genomicLocation) {
+
+            // if the user clicks on a base next to an insertion, show just the
+            // inserted bases in a popup (like in desktop IGV).
+            const nameValues = [];
+
+            // Consert genomic location to int
+            genomicLocation = Math.floor(genomicLocation);
+
+            if (this.insertions) {
+
+                const seq = this.seq;
+
+                for (let insertion of this.insertions) {
+                    var ins_start = insertion.start;
+                    if (genomicLocation === ins_start || genomicLocation === ins_start - 1) {
+                        nameValues.push({name: 'Insertion', value: seq.substr(insertion.seqOffset, insertion.len)});
+                        nameValues.push({name: 'Location', value: ins_start});
+                        return nameValues
+                    }
+                }
+            }
+
+            nameValues.push({name: 'Read Name', value: this.readName});
+
+            // Sample
+            // Read group
+            nameValues.push('<hr/>');
+
+            // Add 1 to genomic location to map from 0-based computer units to user-based units
+            nameValues.push({name: 'Alignment Start', value: numberFormatter$1(1 + this.start), borderTop: true});
+            nameValues.push({name: 'Read Strand', value: (true === this.strand ? '(+)' : '(-)'), borderTop: true});
+
+            // Abbreviate long cigar strings, keeping the beginning and end to show cliping
+            let cigar = this.cigar;
+            if (cigar && cigar.length > MAX_CIGAR) {
+                const half = MAX_CIGAR / 2;
+                cigar = `${cigar.substring(0, half - 2)} ... ${cigar.substring(cigar.length - half + 2)}`;
+            }
+            nameValues.push({name: 'Cigar', value: cigar});
+
+            nameValues.push({name: 'Mapping Quality', value: this.mq});
+            nameValues.push({name: 'Secondary', value: yesNo(this.isSecondary())});
+            nameValues.push({name: 'Supplementary', value: yesNo(this.isSupplementary())});
+            nameValues.push({name: 'Duplicate', value: yesNo(this.isDuplicate())});
+            nameValues.push({name: 'Failed QC', value: yesNo(this.isFailsVendorQualityCheck())});
+
+            if (this.isPaired()) {
+                nameValues.push('<hr/>');
+                nameValues.push({name: 'First in Pair', value: !this.isSecondOfPair(), borderTop: true});
+                nameValues.push({name: 'Mate is Mapped', value: yesNo(this.isMateMapped())});
+                if (this.pairOrientation) {
+                    nameValues.push({name: 'Pair Orientation', value: this.pairOrientation});
+                }
+                if (this.isMateMapped()) {
+                    nameValues.push({name: 'Mate Chromosome', value: this.mate.chr});
+                    nameValues.push({name: 'Mate Start', value: (this.mate.position + 1)});
+                    nameValues.push({name: 'Mate Strand', value: (true === this.mate.strand ? '(+)' : '(-)')});
+                    nameValues.push({name: 'Insert Size', value: this.fragmentLength});
+                    // Mate Start
+                    // Mate Strand
+                    // Insert Size
+                }
+                // First in Pair
+                // Pair Orientation
+
+            }
+
+            const tagDict = this.tags();
+
+            if (tagDict.hasOwnProperty('SA')) {
+                nameValues.push('<hr/>');
+                nameValues.push({name: 'Supplementary Alignments', value: ''});
+                const sa = createSupplementaryAlignments(tagDict['SA']);
+                if (sa) {
+                    nameValues.push('<ul>');
+                    for (let s of sa) {
+                        nameValues.push(`<li>${s.printString()}</li>`);
+                    }
+                    nameValues.push('</ul>');
+                }
+            }
+
+            const hiddenTags = new Set(['SA', 'MD']);
+            nameValues.push('<hr/>');
+            for (let key in tagDict) {
+                if (!hiddenTags.has(key)) {
+                    nameValues.push({name: key, value: tagDict[key]});
+                }
+            }
+
+            nameValues.push({name: 'Hidden Tags', value: 'SA, MD'});
+
+            nameValues.push('<hr/>');
+            nameValues.push({name: 'Genomic Location: ', value: numberFormatter$1(1 + genomicLocation)});
+            nameValues.push({name: 'Read Base:', value: this.readBaseAt(genomicLocation)});
+            nameValues.push({name: 'Base Quality:', value: this.readBaseQualityAt(genomicLocation)});
+
+            return nameValues
+
+
+            function yesNo(bool) {
+                return bool ? 'Yes' : 'No'
+            }
+        }
+
+        readBaseAt(genomicLocation) {
+
+            const block = blockAtGenomicLocation(this.blocks, genomicLocation);
+            if (block) {
+                if ("*" === this.seq) {
+                    return "*"
+                } else {
+                    const idx = block.seqIndexAt(genomicLocation);
+                    // if (idx >= 0 && idx < this.seq.length) {
+                    return this.seq[idx]
+                    //  }
+                }
+            } else {
+                return undefined
+            }
+        }
+
+        readBaseQualityAt(genomicLocation) {
+
+            const block = blockAtGenomicLocation(this.blocks, genomicLocation);
+            if (block) {
+                if ("*" === this.qual) {
+                    return 30
+                } else {
+                    const idx = block.seqIndexAt(genomicLocation);
+                    if (idx >= 0 && this.qual && idx < this.qual.length) {
+                        return this.qual[idx]
+                    } else {
+                        return 30
+                    }
+                }
+            } else {
+                return undefined
+            }
+        }
+
+        gapSizeAt(genomicLocation) {
+            if (this.gaps) {
+                for (let gap of this.gaps) {
+                    if (genomicLocation >= gap.start && genomicLocation < gap.start + gap.len) {
+                        return gap.len
+                    }
+                }
+            }
+            return 0
+        }
+
+        /**
+         * Return soft clipped blocks, if they exist, keyed by alignment end (left or right)
+         */
+        softClippedBlocks() {
+            let left;
+            let right;
+            let interiorSeen;
+            for(let b of this.blocks) {
+                if('S' === b.type) {
+                    if(interiorSeen) {
+                        right = b;
+                    } else {
+                        left = b;
+                    }
+                } else if('H' !== b.type) {
+                    interiorSeen = true;
+                }
+            }
+            return {left, right}
+        }
+
+    }
+
+    function blockAtGenomicLocation(blocks, genomicLocation) {
+
+        for (let i = 0; i < blocks.length; i++) {
+            const block = blocks[i];
+            if (genomicLocation >= block.start && genomicLocation < block.start + block.len) {
+                return block
+            }
+        }
+        return undefined
+    }
+
+    function decodeTags(ba) {
+
+        let p = 0;
+        const len = ba.length;
+        const tags = {};
+
+        while (p < len) {
+            const tag = String.fromCharCode(ba[p]) + String.fromCharCode(ba[p + 1]);
+            p += 2;
+
+            const type = String.fromCharCode(ba[p++]);
+            let value;
+            if (type === 'A') {
+                value = String.fromCharCode(ba[p]);
+                p++;
+            } else if (type === 'i' || type === 'I') {
+                value = readInt$1(ba, p);
+                p += 4;
+            } else if (type === 'c') {
+                value = readInt8(ba, p);
+                p++;
+            } else if (type === 'C') {
+                value = readUInt8(ba, p);
+                p++;
+            } else if (type === 's' || type === 'S') {
+                value = readShort(ba, p);
+                p += 2;
+            } else if (type === 'f') {
+                value = readFloat(ba, p);
+                p += 4;
+            } else if (type === 'Z') {
+                value = '';
+                for (; ;) {
+                    var cc = ba[p++];
+                    if (cc === 0) {
+                        break
+                    } else {
+                        value += String.fromCharCode(cc);
+                    }
+                }
+            } else if (type === 'B') {
+                const elementType = String.fromCharCode(ba[p++]);
+                let elementSize = ELEMENT_SIZE[elementType];
+                if (elementSize === undefined) {
+                    tags[tag] = `Error: unknown element type '${elementType}'`;
+                    break
+                }
+                const numElements = readInt$1(ba, p);
+                p += (4 + numElements * elementSize);
+                value = '[not shown]';
+            } else {
+                //'Unknown type ' + type;
+                value = 'Error unknown type: ' + type;
+                tags[tag] = value;
+                break
+            }
+            tags[tag] = value;
+        }
+        return tags
+    }
+
+
+    function readInt$1(ba, offset) {
+        return (ba[offset + 3] << 24) | (ba[offset + 2] << 16) | (ba[offset + 1] << 8) | (ba[offset])
+    }
+
+    function readShort(ba, offset) {
+        return (ba[offset + 1] << 8) | (ba[offset])
+    }
+
+    function readFloat(ba, offset) {
+        const dataView = new DataView(ba.buffer);
+        return dataView.getFloat32(offset)
+    }
+
+    function readInt8(ba, offset) {
+        const dataView = new DataView(ba.buffer);
+        return dataView.getInt8(offset)
+    }
+
+    function readUInt8(ba, offset) {
+        const dataView = new DataView(ba.buffer);
+        return dataView.getUint8(offset)
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2017 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    /**
+     * Created by jrobinso on 4/5/18.
+     */
+
+
+    class AlignmentBlock {
+        constructor(b) {
+            if (b) {
+                Object.assign(this, b);
+            }
+        }
+
+        seqIndexAt(genomicLocation) {
+            return Math.floor(genomicLocation) - this.start + this.seqOffset
+        }
+    }
+
+    class BamFilter {
+        constructor(options) {
+            if (!options) options = {};
+            this.vendorFailed = options.vendorFailed === undefined ? true : options.vendorFailed;
+            this.duplicates = options.duplicates === undefined ? true : options.duplicates;
+            this.secondary = options.secondary || false;
+            this.supplementary = options.supplementary || false;
+            this.mqThreshold = options.mqThreshold === undefined ? 0 : options.mqThreshold;
+            if (options.readgroups) {
+                this.readgroups = new Set(options.readgroups);
+            }
+        }
+
+        pass(alignment) {
+            if (this.vendorFailed && alignment.isFailsVendorQualityCheck()) return false
+            if (this.duplicates && alignment.isDuplicate()) return false
+            if (this.secondary && alignment.isSecondary()) return false
+            if (this.supplementary && alignment.isSupplementary()) return false
+            if (alignment.mq < this.mqThreshold) return false
+            if (this.readgroups) {
+                var rg = alignment.tags()['RG'];
+                return this.readgroups.has(rg)
+            }
+            return true
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2017 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+
+    /**
+     * This code is based on the Biodalliance BAM reader by Thomas Down,  2011
+     *
+     * https://github.com/dasmoth/dalliance/blob/master/js/bam.js
+     */
+
+    const SEQ_DECODER = ['=', 'A', 'C', 'x', 'G', 'x', 'x', 'x', 'T', 'x', 'x', 'x', 'x', 'x', 'x', 'N'];
+    const CIGAR_DECODER = ['M', 'I', 'D', 'N', 'S', 'H', 'P', '=', 'X', '?', '?', '?', '?', '?', '?', '?'];
+    const READ_STRAND_FLAG$1 = 0x10;
+    const MATE_STRAND_FLAG$1 = 0x20;
+
+    const BAM1_MAGIC_BYTES = new Uint8Array([0x42, 0x41, 0x4d, 0x01]); // BAM\1
+    const BAM1_MAGIC_NUMBER = readInt(BAM1_MAGIC_BYTES, 0);
+
+    const DEFAULT_ALLELE_FREQ_THRESHOLD = 0.2;
+    const DEFAULT_SAMPLING_WINDOW_SIZE = 100;
+    const DEFAULT_SAMPLING_DEPTH = 500;
+    const MAXIMUM_SAMPLING_DEPTH = 10000;
+
+    const BamUtils = {
+
+        readHeader: function (url, options, genome) {
+
+            return igvxhr.loadArrayBuffer(url, options)
+
+                .then(function (compressedBuffer) {
+
+                    var header, unc, uncba;
+
+                    unc = unbgzf(compressedBuffer);
+                    uncba = unc;
+
+                    header = BamUtils.decodeBamHeader(uncba, genome);
+
+                    return header
+
+                })
+
+        },
+
+        /**
+         *
+         * @param ba  bytes to decode as a UInt8Array
+         * @param genome  optional igv genome object
+         * @returns {{ magicNumer: number, size: number, chrNames: Array, chrToIndex: ({}|*), chrAliasTable: ({}|*) }}
+         */
+        decodeBamHeader: function (ba, genome) {
+
+            var magic, samHeaderLen, samHeader, chrToIndex, chrNames, chrAliasTable, alias;
+
+            magic = readInt(ba, 0);
+            if (magic !== BAM1_MAGIC_NUMBER) {
+                throw new Error('BAM header errror: bad magic number.  This could be caused by either a corrupt or missing file.')
+            }
+
+            samHeaderLen = readInt(ba, 4);
+            samHeader = '';
+
+            for (var i = 0; i < samHeaderLen; ++i) {
+                samHeader += String.fromCharCode(ba[i + 8]);
+            }
+
+            var nRef = readInt(ba, samHeaderLen + 8);
+            var p = samHeaderLen + 12;
+
+            chrToIndex = {};
+            chrNames = [];
+            chrAliasTable = {};
+
+            for (i = 0; i < nRef; ++i) {
+                var lName = readInt(ba, p);
+                var name = '';
+                for (var j = 0; j < lName - 1; ++j) {
+                    name += String.fromCharCode(ba[p + 4 + j]);
+                }
+                readInt(ba, p + lName + 4);
+                //dlog(name + ': ' + lRef);
+
+                chrToIndex[name] = i;
+                chrNames[i] = name;
+
+                if (genome) {
+                    alias = genome.getChromosomeName(name);
+                    chrAliasTable[alias] = name;
+                }
+
+                p = p + 8 + lName;
+            }
+
+            return {
+                magicNumber: magic,
+                size: p,
+                chrNames: chrNames,
+                chrToIndex: chrToIndex,
+                chrAliasTable: chrAliasTable
+            }
+
+        },
+
+        bam_tag2cigar: function (ba, block_end, seq_offset, lseq, al, cigarArray) {
+
+            function type2size(x) {
+                if (x === 'C' || x === 'c' || x === 'A') return 1
+                else if (x === 'S' || x === 's') return 2
+                else if (x === 'I' || x === 'i' || x === 'f') return 4
+                else return 0
+            }
+
+            // test if the real CIGAR is encoded in a CG:B,I tag
+            if (cigarArray.length !== 1 || al.start < 0) return false
+            var p = seq_offset + ((lseq + 1) >> 1) + lseq;
+            while (p + 4 < block_end) {
+                var tag = String.fromCharCode(ba[p]) + String.fromCharCode(ba[p + 1]);
+                if (tag === 'CG') break
+                var type = String.fromCharCode(ba[p + 2]);
+                if (type === 'B') { // the binary array type
+                    type = String.fromCharCode(ba[p + 3]);
+                    var size = type2size(type);
+                    var len = readInt(ba, p + 4);
+                    p += 8 + size * len;
+                } else if (type === 'Z' || type === 'H') { // 0-terminated string
+                    p += 3;
+                    while (ba[p++] !== 0) {
+                    }
+                } else { // other atomic types
+                    p += 3 + type2size(type);
+                }
+            }
+            if (p >= block_end) return false // no CG tag
+            if (String.fromCharCode(ba[p + 2]) !== 'B' || String.fromCharCode(ba[p + 3]) !== 'I') return false // not of type B,I
+
+            // now we know the real CIGAR length and its offset in the binary array
+            var cigar_len = readInt(ba, p + 4);
+            var cigar_offset = p + 8; // 4 for "CGBI" and 4 for length
+            if (cigar_offset + cigar_len * 4 > block_end) return false // out of bound
+
+            // decode CIGAR
+            var cigar = '';
+            var lengthOnRef = 0;
+            cigarArray.length = 0; // empty the old array
+            p = cigar_offset;
+            for (var k = 0; k < cigar_len; ++k, p += 4) {
+                var cigop = readInt(ba, p);
+                var opLen = (cigop >> 4);
+                var opLtr = CIGAR_DECODER[cigop & 0xf];
+                if (opLtr === 'M' || opLtr === 'EQ' || opLtr === 'X' || opLtr === 'D' || opLtr === 'N' || opLtr === '=')
+                    lengthOnRef += opLen;
+                cigar = cigar + opLen + opLtr;
+                cigarArray.push({len: opLen, ltr: opLtr});
+            }
+
+            // update alignment record. We are not updating bin, as apparently it is not used.
+            al.cigar = cigar;
+            al.lengthOnRef = lengthOnRef;
+            return true
+        },
+
+        /**
+         *
+         * @param ba                 bytes to decode as an UInt8Array
+         * @param offset             offset position of ba array to start decoding
+         * @param alignmentContainer container to receive the decoded alignments
+         * @param min                minimum genomic position
+         * @param max                maximum genomic position
+         * @param chrIdx             chromosome index
+         * @param chrNames            array of chromosome names
+         * @param filter             a BamFilter object
+         *
+         * @return true if we have moved beyond the right end of the genomic range.
+         */
+        decodeBamRecords: function (ba, offset, alignmentContainer, chrNames, chrIdx, min, max, filter) {
+
+            while (offset < ba.length) {
+
+                const blockSize = readInt(ba, offset);
+                const blockEnd = offset + blockSize + 4;
+                const alignment = new BamAlignment();
+                const refID = readInt(ba, offset + 4);
+                const pos = readInt(ba, offset + 8);
+
+                if (blockEnd > ba.length) {
+                    return
+                }
+                if (refID < 0) {
+                    offset = blockEnd;
+                    continue   // unmapped read
+                } else if (chrIdx !== undefined && (refID > chrIdx || pos > max)) {
+                    return true    // off right edge, we're done
+                } else if (chrIdx !== undefined && (refID < chrIdx)) {
+                    offset = blockEnd;
+                    continue   // ref ID to left of start, not sure this is possible
+                }
+
+                const bin_mq_nl = readInt(ba, offset + 12);
+                const mq = (bin_mq_nl & 0xff00) >> 8;
+                const nl = bin_mq_nl & 0xff;
+
+                const flag_nc = readInt(ba, offset + 16);
+                const flag = (flag_nc & 0xffff0000) >> 16;
+                const nc = flag_nc & 0xffff;
+
+                const lseq = readInt(ba, offset + 20);
+                const mateChrIdx = readInt(ba, offset + 24);
+                const matePos = readInt(ba, offset + 28);
+                const fragmentLength = readInt(ba, offset + 32);
+
+                let readName = [];
+                for (let j = 0; j < nl - 1; ++j) {
+                    readName.push(String.fromCharCode(ba[offset + 36 + j]));
+                }
+                readName = readName.join('');
+
+                let lengthOnRef = 0;
+                let cigar = '';
+                let p = offset + 36 + nl;
+                const cigarArray = [];
+                // concatenate M,=,EQ,and X
+
+                let lastCigRecord;
+                for (let c = 0; c < nc; ++c) {
+                    var cigop = readInt(ba, p);
+                    var opLen = (cigop >> 4);
+                    var opLtr = CIGAR_DECODER[cigop & 0xf];
+                    if (opLtr === 'M' || opLtr === 'EQ' || opLtr === 'X' || opLtr === 'D' || opLtr === 'N' || opLtr === '=')
+                        lengthOnRef += opLen;
+                    cigar = cigar + opLen + opLtr;
+                    p += 4;
+
+                    // if(mOperators.has(opLtr) && mOperators.has(lastCigRecord.ltr)) {
+                    //     lastCigRecord.len += opLen;
+                    //     lastCigRecord.ltr = 'M'
+                    // }
+                    // else {
+                    lastCigRecord = {len: opLen, ltr: opLtr};
+                    cigarArray.push(lastCigRecord);
+                    //}
+                }
+
+                alignment.chr = chrNames[refID];
+                alignment.start = pos;
+                alignment.flags = flag;
+                alignment.strand = !(flag & READ_STRAND_FLAG$1);
+                alignment.readName = readName;
+                alignment.cigar = cigar;
+                alignment.lengthOnRef = lengthOnRef;
+                alignment.fragmentLength = fragmentLength;
+                alignment.mq = mq;
+
+                BamUtils.bam_tag2cigar(ba, blockEnd, p, lseq, alignment, cigarArray);
+
+                alignment.end = alignment.start + alignment.lengthOnRef;
+
+                if (alignment.end < min) {
+                    offset = blockEnd;
+                    continue
+                }  // Record out-of-range "to the left", skip to next one
+
+
+                let seq = [];
+                const seqBytes = (lseq + 1) >> 1;
+                for (let j = 0; j < seqBytes; ++j) {
+                    var sb = ba[p + j];
+                    seq.push(SEQ_DECODER[(sb & 0xf0) >> 4]);
+                    seq.push(SEQ_DECODER[(sb & 0x0f)]);
+                }
+                seq = seq.slice(0, lseq).join('');  // seq might have one extra character (if lseq is an odd number)
+                p += seqBytes;
+
+
+                const qualArray = [];
+                for (let j = 0; j < lseq; ++j) {
+                    qualArray.push(ba[p + j]);
+                }
+                p += lseq;
+
+                if (mateChrIdx >= 0) {
+                    alignment.mate = {
+                        chr: chrNames[mateChrIdx],
+                        position: matePos,
+                        strand: !(flag & MATE_STRAND_FLAG$1)
+                    };
+                }
+
+                alignment.seq = seq;
+                alignment.qual = qualArray;
+                alignment.tagBA = new Uint8Array(ba.buffer.slice(p, blockEnd));  // decode these on demand
+
+                this.setPairOrientation(alignment);
+
+                if ((undefined === filter || filter.pass(alignment))) {
+                    makeBlocks(alignment, cigarArray);
+                    alignmentContainer.push(alignment);
+                }
+                offset = blockEnd;
+            }
+        },
+
+        decodeSamRecords: function (sam, alignmentContainer, chr, min, max, filter) {
+
+            var lines, i, j, len, tokens, qualString, rnext, lengthOnRef,
+                alignment, cigarArray, started;
+
+            lines = splitLines$5(sam);
+            len = lines.length;
+            started = false;
+
+            for (i = 0; i < len; i++) {
+
+                tokens = lines[i].split('\t');
+
+                alignment = new BamAlignment();
+
+                alignment.chr = tokens[2];
+                alignment.start = Number.parseInt(tokens[3]) - 1;
+                alignment.flags = Number.parseInt(tokens[1]);
+                alignment.readName = tokens[0];
+                alignment.strand = !(alignment.flags & READ_STRAND_FLAG$1);
+                alignment.mq = Number.parseInt(tokens[4]);
+                alignment.cigar = tokens[5];
+                alignment.fragmentLength = Number.parseInt(tokens[8]);
+                alignment.seq = tokens[9];
+
+                if (alignment.chr === '*' || !alignment.isMapped()) continue  // Unmapped
+
+                if (alignment.chr !== chr) {
+                    if (started) break // Off the right edge, we're done
+                    else continue // Possibly to the left, skip but keep looping
+                } else if (alignment.start > max) {
+                    break    // off right edge, we're done
+                }
+
+                lengthOnRef = 0;
+                cigarArray = buildOperators(alignment.cigar);
+                cigarArray.forEach(function (op) {
+                    var opLen = op.len;
+                    var opLtr = op.ltr;
+                    if (opLtr === 'M' || opLtr === 'EQ' || opLtr === 'X' || opLtr === 'D' || opLtr === 'N' || opLtr === '=')
+                        lengthOnRef += opLen;
+                });
+                alignment.lengthOnRef = lengthOnRef;
+                // TODO for lh3: parse the CG:B,I tag in SAM here
+
+                if (alignment.start + lengthOnRef < min) {
+                    continue    // To the left, skip and continue
+                }
+
+
+                qualString = tokens[10];
+                alignment.qual = [];
+                for (j = 0; j < qualString.length; j++) {
+                    alignment.qual[j] = qualString.charCodeAt(j) - 33;
+                }
+                alignment.tagDict = tokens.length < 11 ? {} : decodeSamTags(tokens.slice(11));
+
+                if (alignment.isMateMapped()) {
+                    rnext = tokens[6];
+                    alignment.mate = {
+                        chr: (rnext === '=') ? alignment.chr : rnext,
+                        position: Number.parseInt(tokens[7]),
+                        strand: !(alignment.flags & MATE_STRAND_FLAG$1)
+                    };
+                }
+
+                this.setPairOrientation(alignment);
+
+                if (undefined === filter || filter.pass(alignment)) {
+                    makeBlocks(alignment, cigarArray);
+                    alignmentContainer.push(alignment);
+                }
+            }
+        },
+
+        setReaderDefaults: function (reader, config) {
+
+            reader.filter = new BamFilter(config.filter);
+
+            if (config.readgroup) {
+                reader.filter.readgroups = new Set([config.readgroup]);
+            }
+
+            reader.alleleFreqThreshold = config.alleleFreqThreshold === undefined ? DEFAULT_ALLELE_FREQ_THRESHOLD : config.alleleFreqThreshold;
+
+            reader.samplingWindowSize = config.samplingWindowSize === undefined ? DEFAULT_SAMPLING_WINDOW_SIZE : config.samplingWindowSize;
+            reader.samplingDepth = config.samplingDepth === undefined ? DEFAULT_SAMPLING_DEPTH : config.samplingDepth;
+
+            if (reader.samplingDepth > MAXIMUM_SAMPLING_DEPTH) {
+                console.log("Warning: attempt to set sampling depth > maximum value of " + MAXIMUM_SAMPLING_DEPTH);
+                reader.samplingDepth = MAXIMUM_SAMPLING_DEPTH;
+            }
+
+            if (config.viewAsPairs) {
+                reader.pairsSupported = true;
+            } else {
+                reader.pairsSupported = config.pairsSupported === undefined ? true : config.pairsSupported;
+            }
+        },
+
+        setPairOrientation: function (alignment) {
+
+            if (alignment.isMapped() && alignment.mate && alignment.isMateMapped() && alignment.mate.chr === alignment.chr) {
+                var s1 = alignment.strand ? 'F' : 'R';
+
+                var mate = alignment.mate;
+                var s2 = mate.strand ? 'F' : 'R';
+                var o1 = ' ';
+                var o2 = ' ';
+                if (alignment.isFirstOfPair()) {
+                    o1 = '1';
+                    o2 = '2';
+                } else if (alignment.isSecondOfPair()) {
+                    o1 = '2';
+                    o2 = '1';
+                }
+
+                var tmp = [];
+                var isize = alignment.fragmentLength;
+                var estReadLen = alignment.end - alignment.start;
+                if (isize === 0) {
+                    //isize not recorded.  Need to estimate.  This calculation was validated against an Illumina
+                    // -> <- library bam.
+                    var estMateEnd = alignment.start < mate.position ?
+                        mate.position + estReadLen : mate.position - estReadLen;
+                    isize = estMateEnd - alignment.start;
+                }
+
+                //if (isize > estReadLen) {
+                if (isize > 0) {
+                    tmp[0] = s1;
+                    tmp[1] = o1;
+                    tmp[2] = s2;
+                    tmp[3] = o2;
+
+                } else {
+                    tmp[2] = s1;
+                    tmp[3] = o1;
+                    tmp[0] = s2;
+                    tmp[1] = o2;
+                }
+                // }
+                alignment.pairOrientation = tmp.join('');
+            }
+        },
+
+        computeLengthOnReference: function (cigarString) {
+
+            let len = 0;
+            let buf = '';
+
+            for (let i = 0; i < cigarString.length; i++) {
+                const c = cigarString.charCodeAt(i);
+                if (c > 47 && c < 58) {
+                    buf += cigarString.charAt(i);
+                } else {
+                    switch (c) {
+                        case 78:  // N
+                        case 68:  // D
+                        case 77:  // M
+                        case 61:  // =
+                        case 88:  // X
+                            len += parseInt(buf.toString());
+                    }
+                    buf = '';
+                }
+            }
+            return len
+        }
+    };
+
+
+    /**
+     * Split the alignment record into blocks as specified in the cigarArray.  Each aligned block contains
+     * its portion of the read sequence and base quality strings.  A read sequence or base quality string
+     * of "*" indicates the value is not recorded.  In all other cases the length of the block sequence (block.seq)
+     * and quality string (block.qual) must == the block length.
+     *
+     * @param alignment
+     * @param cigarArray
+     * @returns array of blocks
+     */
+    function makeBlocks(alignment, cigarArray) {
+
+        const blocks = [];
+
+        let insertions;
+        let gaps;
+        let seqOffset = 0;
+        let pos = alignment.start;
+
+        alignment.scStart = alignment.start;
+        alignment.scLengthOnRef = alignment.lengthOnRef;
+
+        for (let c of cigarArray) {
+
+            let scPos;
+            switch (c.ltr) {
+                case 'H' :
+                    break // ignore hard clips
+                case 'P' :
+                    break // ignore pads
+                case 'S' :
+
+                    scPos = pos;
+                    alignment.scLengthOnRef += c.len;
+                    if (blocks.length === 0) {
+                        alignment.scStart -= c.len;
+                        scPos -= c.len;
+                    }
+                    blocks.push(new AlignmentBlock({
+                        start: scPos,
+                        seqOffset: seqOffset,
+                        len: c.len,
+                        type: 'S'
+                    }));
+                    seqOffset += c.len;
+                    break // soft clip read bases
+                case 'N' :
+                case 'D':
+                    if (gaps === undefined) {
+                        gaps = [];
+                    }
+                    gaps.push({
+                        start: pos,
+                        len: c.len,
+                        type: c.ltr
+                    });
+                    pos += c.len;
+                    break
+                case 'I' :
+
+                    if (insertions === undefined) {
+                        insertions = [];
+                    }
+                    insertions.push(new AlignmentBlock({
+                        start: pos,
+                        len: c.len,
+                        seqOffset: seqOffset,
+                        type: 'I'
+                    }));
+                    seqOffset += c.len;
+                    break
+                case 'M' :
+                case 'EQ' :
+                case '=' :
+                case 'X' :
+                    blocks.push(new AlignmentBlock({
+                        start: pos,
+                        seqOffset: seqOffset,
+                        len: c.len,
+                        type: 'M'
+                    }));
+                    seqOffset += c.len;
+                    pos += c.len;
+
+                    break
+
+                default :
+                    console.log('Error processing cigar element: ' + c.len + c.ltr);
+            }
+        }
+
+        alignment.blocks = blocks;
+        alignment.insertions = insertions;
+        alignment.gaps = gaps;
+
+    }
+
+    function readInt(ba, offset) {
+        return (ba[offset + 3] << 24) | (ba[offset + 2] << 16) | (ba[offset + 1] << 8) | (ba[offset])
+    }
+
+    /**
+     * Build a list of cigar operators from a cigarString.  Removes padding operators and concatenates consecutive
+     * operators of the same type
+     *
+     * @param cigarString
+     * @return
+     */
+    function buildOperators(cigarString) {
+
+        var operators, buffer, i, len, prevOp, next, op, nBases;
+
+        operators = [];
+        buffer = [];
+
+        // Create list of cigar operators
+        prevOp = null;
+        len = cigarString.length;
+        for (i = 0; i < len; i++) {
+            next = cigarString.charAt(i);
+            if (isDigit(next)) {
+                buffer.push(next);
+            } else {
+                op = next;
+                nBases = Number.parseInt(buffer.join(''));
+                buffer = [];
+
+                if (prevOp !== null && prevOp.ltr === op) {
+                    prevOp.len += nBases;
+                } else {
+                    prevOp = {len: nBases, ltr: op};
+                    operators.push(prevOp);
+                }
+            }
+        }
+        return operators
+
+    }
+
+    function isDigit(a) {
+        var charCode = a.charCodeAt(0);
+        return (charCode >= 48 && charCode <= 57) // 0-9
+    }
+
+    function decodeSamTags(tags) {
+
+        var tagDict = {};
+        tags.forEach(function (tag) {
+            var tokens = tag.split(':');
+            tagDict[tokens[0]] = tokens[2];
+        });
+
+        return tagDict
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2017 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    /**
+     * Class for reading a bam file
+     *
+     * @param config
+     * @constructor
+     */
+    class BamReaderNonIndexed {
+
+        constructor(config, genome) {
+            this.config = config;
+            this.genome = genome;
+            this.bamPath = config.url;
+            this.isDataUri = isDataURL(config.url);
+            BamUtils.setReaderDefaults(this, config);
+        }
+
+        // Return an alignment container
+        async readAlignments(chr, bpStart, bpEnd) {
+
+            if (this.alignmentCache) {
+                const header = this.header;
+                const queryChr = header.chrAliasTable.hasOwnProperty(chr) ? header.chrAliasTable[chr] : chr;
+                const qAlignments = this.alignmentCache.queryFeatures(queryChr, bpStart, bpEnd);
+                const alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, this.config);
+                for (let a of qAlignments) {
+                    alignmentContainer.push(a);
+                }
+                alignmentContainer.finish();
+                return alignmentContainer
+
+            } else {
+                if (this.isDataUri) {
+                    const data = decodeDataURI(this.bamPath);
+                    const unc = unbgzf(data.buffer);
+                    this.parseAlignments(unc);
+                    return this.fetchAlignments(chr, bpStart, bpEnd)
+                } else {
+                    const arrayBuffer = await igvxhr.loadArrayBuffer(this.bamPath, buildOptions(this.config));
+                    const unc = unbgzf(arrayBuffer);
+                    this.parseAlignments(unc);
+                    return this.fetchAlignments(chr, bpStart, bpEnd)
+                }
+            }
+
+        }
+
+        parseAlignments(data) {
+            const alignments = [];
+            this.header = BamUtils.decodeBamHeader(data);
+            BamUtils.decodeBamRecords(data, this.header.size, alignments, this.header.chrNames);
+            this.alignmentCache = new FeatureCache$1(alignments, this.genome);
+        }
+
+        fetchAlignments(chr, bpStart, bpEnd) {
+            const queryChr = this.header.chrAliasTable.hasOwnProperty(chr) ? this.header.chrAliasTable[chr] : chr;
+            const features = this.alignmentCache.queryFeatures(queryChr, bpStart, bpEnd);
+            const alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, this.config);
+            for (let feature of features) {
+                alignmentContainer.push(feature);
+            }
+            alignmentContainer.finish();
+            return alignmentContainer
+        }
+
+    }
+
+    function decodeDataURI(dataURI) {
+
+        const split = dataURI.split(',');
+        const info = split[0].split(':')[1];
+        let dataString = split[1];
+
+        if (info.indexOf('base64') >= 0) {
+            dataString = atob(dataString);
+        } else {
+            dataString = decodeURI(dataString);
+        }
+
+        const bytes = new Uint8Array(dataString.length);
+        for (var i = 0; i < dataString.length; i++) {
+            bytes[i] = dataString.charCodeAt(i);
+        }
+        return bytes
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2017 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    /**
+     * Class for reading a bam file
+     *
+     * @param config
+     * @constructor
+     */
+    class BamReader {
+
+        constructor(config, genome) {
+            this.config = config;
+            this.genome = genome;
+            this.bamPath = config.url;
+            this.baiPath = config.indexURL;
+            BamUtils.setReaderDefaults(this, config);
+
+            this._blockLoader = new BGZBlockLoader(config);
+        }
+
+        async readAlignments(chr, bpStart, bpEnd) {
+
+            const chrToIndex = await this.getChrIndex();
+            const queryChr = this.chrAliasTable.hasOwnProperty(chr) ? this.chrAliasTable[chr] : chr;
+            const chrId = chrToIndex[queryChr];
+            const alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, this.config);
+
+            if (chrId === undefined) {
+                return alignmentContainer
+
+            } else {
+
+                const bamIndex = await this.getIndex();
+                const chunks = bamIndex.chunksForRange(chrId, bpStart, bpEnd);
+
+                if (!chunks || chunks.length === 0) {
+                    return alignmentContainer
+                }
+
+                for (let c of chunks) {
+                    const ba = await this._blockLoader.getData(c.minv, c.maxv);
+                    const done = BamUtils.decodeBamRecords(ba, c.minv.offset, alignmentContainer, this.indexToChr, chrId, bpStart, bpEnd, this.filter);
+                    if (done) {
+                        break
+                    }
+                }
+                alignmentContainer.finish();
+                return alignmentContainer
+            }
+        }
+
+        async getHeader() {
+            if (!this.header) {
+                const genome = this.genome;
+                const index = await this.getIndex();
+                let len;
+                if (index.firstBlockPosition) {
+                    const bsizeOptions = buildOptions(this.config, {range: {start: index.firstBlockPosition, size: 26}});
+                    const abuffer = await igvxhr.loadArrayBuffer(this.bamPath, bsizeOptions);
+                    const bsize = bgzBlockSize$1(abuffer);
+                    len = index.firstBlockPosition + bsize;   // Insure we get the complete compressed block containing the header
+                } else {
+                    len = 64000;
+                }
+
+                const options = buildOptions(this.config, {range: {start: 0, size: len}});
+                this.header = await BamUtils.readHeader(this.bamPath, options, genome);
+            }
+            return this.header
+        }
+
+        async getIndex() {
+            const genome = this.genome;
+            if (!this.index) {
+                this.index = await loadIndex(this.baiPath, this.config, genome);
+            }
+            return this.index
+        }
+
+        async getChrIndex() {
+            if (this.chrToIndex) {
+                return this.chrToIndex
+            } else {
+                const header = await this.getHeader();
+                this.chrToIndex = header.chrToIndex;
+                this.indexToChr = header.chrNames;
+                this.chrAliasTable = header.chrAliasTable;
+                return this.chrToIndex
+
+            }
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2017 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class ShardedBamReader {
+
+        constructor(config, genome) {
+
+            this.config = config;
+            this.genome = genome;
+
+            const bamReaders = {};
+
+            config.sources.sequences.forEach(function (chr) {
+                const queryChr = genome ? genome.getChromosomeName(chr) : chr;
+                bamReaders[queryChr] = getReader(config, genome, chr);
+            });
+
+            this.bamReaders = bamReaders;
+
+            BamUtils.setReaderDefaults(this, config);
+        }
+
+        async readAlignments(chr, start, end) {
+
+            if (!this.bamReaders.hasOwnProperty(chr)) {
+                return new AlignmentContainer(chr, start, end, this.config)
+            } else {
+
+                let reader = this.bamReaders[chr];
+                const a = await reader.readAlignments(chr, start, end);
+                return a
+            }
+        }
+    }
+
+    function getReader(config, genome, chr) {
+        const tmp = {
+            url: config.sources.url.replace("$CHR", chr)
+        };
+        if (config.sources.indexURL) {
+            tmp.indexURL = config.sources.indexURL.replace("$CHR", chr);
+        }
+        const bamConfig = Object.assign(config, tmp);
+
+        // TODO -- support non-indexed, htsget, etc
+        return new BamReader(bamConfig, genome)
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2017 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    /**
+     * Class for reading bam records from an igv.js-flask server backed by pysam.  Deprecated.
+     *
+     * @param config
+     * @constructor
+     */
+    const BamWebserviceReader = function (config, genome) {
+
+        this.config = config;
+        this.genome = genome;
+        BamUtils.setReaderDefaults(this, config);
+
+    };
+
+    // Example http://localhost:5000/alignments/?reference=/Users/jrobinso/hg19mini.fa&file=/Users/jrobinso/cram_with_crai_index.cram&region=1:100-2000
+
+    BamWebserviceReader.prototype.readAlignments = function (chr, bpStart, bpEnd) {
+
+        var self = this;
+
+        return getHeader.call(self)
+
+            .then(function (header) {
+
+                var queryChr, url;
+
+                queryChr = header.chrAliasTable.hasOwnProperty(chr) ? header.chrAliasTable[chr] : chr;
+
+                url = self.config.url +
+                    "?reference=" + self.config.referenceFile +
+                    "&file=" + self.config.alignmentFile + "" +
+                    "&region=" + queryChr + ":" + bpStart + "-" + bpEnd;
+
+
+                return igvxhr.loadString(url, buildOptions(self.config))
+
+                    .then(function (sam) {
+
+                        var alignmentContainer;
+
+                        header.chrToIndex[queryChr];
+
+                        alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, self.config);
+
+                        BamUtils.decodeSamRecords(sam, alignmentContainer, queryChr, bpStart, bpEnd, self.filter);
+
+                        return alignmentContainer
+
+                    })
+
+            })
+    };
+
+
+    // Example  http://localhost:5000/alignments/?reference=/Users/jrobinso/hg19mini.fa&file=/Users/jrobinso/cram_with_crai_index.cram&options=-b%20-H
+    function getHeader() {
+
+        const self = this;
+        const genome = this.genome;
+
+        if (this.header) {
+
+            return Promise.resolve(this.header)
+
+        } else {
+
+            const url = this.config.url + "?file=" + this.config.alignmentFile + "&options=-b,-H";
+            const options = buildOptions(this.config);
+
+            return BamUtils.readHeader(url, options, genome)
+
+                .then(function (header) {
+
+                    self.header = header;
+                    return header
+
+                })
+        }
+
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2017 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class HtsgetBamReader extends HtsgetReader {
+
+        constructor(config, genome) {
+            super(config, genome);
+            BamUtils.setReaderDefaults(this, config);
+        }
+
+
+        async readAlignments(chr, start, end) {
+
+            if (!this.header) {
+                const compressedData = await this.readHeaderData();
+                const ba = unbgzf(compressedData.buffer);
+                this.header = BamUtils.decodeBamHeader(ba, this.genome);
+                this.chrAliasTable = new Map();
+                for (let key of Object.keys(this.header.chrAliasTable)) {
+                    this.chrAliasTable.set(key, this.header.chrAliasTable[key]);
+                }
+            }
+
+            let queryChr = this.chrAliasTable.has(chr) ? this.chrAliasTable.get(chr) : chr;
+
+            const compressedData = await this.readData(queryChr, start, end);
+
+            // BAM decoding
+            const ba = unbgzf(compressedData.buffer);
+
+            const chrIdx = this.header.chrToIndex[chr];
+            const alignmentContainer = new AlignmentContainer(chr, start, end, this.config);
+            BamUtils.decodeBamRecords(ba, this.header.size, alignmentContainer, this.header.chrNames, chrIdx, start, end);
+            alignmentContainer.finish();
+
+            return alignmentContainer
+
+        }
+
+    }
+
+    /*! For license information please see cram-bundle.js.LICENSE.txt */
+    const fn = ()=>{var e={368:function(e,t,r){var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e));}catch(e){o(e);}}function a(e){try{f(n.throw(e));}catch(e){o(e);}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t);}))).then(s,a);}f((n=n.apply(e,t||[])).next());}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const o=i(r(4105)),s=i(r(1269)),a=r(597),f=r(3427),h=r(8577);function l(e,t){if(t.some((e=>void 0===e)))throw new h.CramMalformedError("invalid .crai index file");const[r,n,i,o,s,a]=t;e[r]||(e[r]=[]),e[r].push({start:n,span:i,containerStart:o,sliceStart:s,sliceBytes:a});}t.default=class{constructor(e){this.filehandle=(0, f.open)(e.url,e.path,e.filehandle),this._parseCache=new o.default({cache:new s.default({maxSize:1}),fill:(e,t)=>this.parseIndex()});}parseIndex(){const e={};return this.filehandle.readFile().then((e=>31===e[0]&&139===e[1]?(0, a.unzip)(e):e)).then((t=>{if(t.length>4&&21578050===t.readUInt32LE(0))throw new h.CramMalformedError("invalid .crai index file. note: file appears to be a .bai index. this is technically legal but please open a github issue if you need support");let r=[],n="";for(let i=0;i<t.length;i+=1){const o=t[i];if(o>=48&&o<=57||!n&&45===o)n+=String.fromCharCode(o);else if(9===o)r.push(Number.parseInt(n,10)),n="";else if(10===o)r.push(Number.parseInt(n,10)),n="",l(e,r),r=[];else if(13!==o&&32!==o)throw new h.CramMalformedError("invalid .crai index file")}return n&&r.push(Number.parseInt(n,10)),6===r.length&&l(e,r),Object.entries(e).forEach((([t,r])=>{e[t]=r.sort(((e,t)=>e.start-t.start||e.span-t.span));})),e}))}getIndex(e={}){return this._parseCache.get("index",null,e.signal)}hasDataForReferenceSequence(e){return n(this,void 0,void 0,(function*(){return !!(yield this.getIndex())[e]}))}getEntriesForRange(e,t,r){return n(this,void 0,void 0,(function*(){const n=(yield this.getIndex())[e];if(!n)return [];const i=e=>{const n=e.start,i=e.start+e.span;return n>r?-1:i<=t?1:0},o=[];for(let e=0;e<n.length;e+=1)0===i(n[e])&&o.push(n[e]);return o}))}};},1050:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.default=class{constructor(e,t){this.parameters=e,this.dataType=t;}};},4863:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const i=r(8577),o=n(r(1050)),s=r(1074);class a extends o.default{constructor(e,t){if(super(e,t),"int"!==this.dataType)throw new i.CramUnimplementedError(`${this.dataType} decoding not yet implemented by BETA codec`)}decode(e,t,r,n){return (0, s.getBits)(t.content,n.coreBlock,this.parameters.length)-this.parameters.offset}}t.default=a;},1738:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const i=r(9488),o=n(r(1050));class s extends o.default{constructor(e,t,r){if(super(e,t),this.instantiateCodec=r,"byteArray"!==t)throw new TypeError(`byteArrayLength does not support data type ${t}`)}decode(e,t,r,n){const i=this._getLengthCodec().decode(e,t,r,n),o=this._getDataCodec(),s=new Uint8Array(i);for(let a=0;a<i;a+=1)s[a]=o.decode(e,t,r,n);return s}_getLengthCodec(){const e=this.parameters.lengthsEncoding;return this.instantiateCodec(e,"int")}_getDataCodec(){const e=this.parameters.valuesEncoding;return this.instantiateCodec(e,"byte")}}t.default=s,"_getLengthCodec _getDataCodec".split(" ").forEach((e=>(0, i.tinyMemoize)(s,e)));},1405:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const i=r(8577),o=n(r(1050)),s=r(1074);class a extends o.default{constructor(e,t){if(super(e,t),"byteArray"!==t)throw new TypeError(`byteArrayStop codec does not support data type ${t}`)}decode(e,t,r,n){const{blockContentId:o}=this.parameters,s=r[o];if(!s)throw new i.CramMalformedError(`no block found with content ID ${o}`);const a=n.externalBlocks.getCursor(o);return this._decodeByteArray(s,a)}_decodeByteArray(e,t){const r=e.content,{stopByte:n}=this.parameters,i=t.bytePosition;let o=t.bytePosition;for(;r[o]!==n&&o<r.length;){if(o===r.length)throw new s.CramBufferOverrunError("byteArrayStop reading beyond length of data buffer?");o+=1;}return t.bytePosition=o+1,r.subarray(i,o)}}t.default=a;},5844:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const i=r(8577),o=n(r(1050)),s=r(9488),a=r(1074);class f extends o.default{constructor(e,t){if(super(e,t),"int"===this.dataType)this._decodeData=this._decodeInt;else {if("byte"!==this.dataType)throw new i.CramUnimplementedError(`${this.dataType} decoding not yet implemented by EXTERNAL codec`);this._decodeData=this._decodeByte;}}decode(e,t,r,n){const{blockContentId:o}=this.parameters,s=r[o];if(!s)throw new i.CramMalformedError(`no block found with content ID ${o}`);const a=n.externalBlocks.getCursor(o);return this._decodeData(s,a)}_decodeInt(e,t){const[r,n]=(0, s.parseItf8)(e.content,t.bytePosition);return t.bytePosition=t.bytePosition+n,r}_decodeByte(e,t){if(t.bytePosition>=e.content.length)throw new a.CramBufferOverrunError("attempted to read beyond end of block. this file seems truncated.");return e.content[t.bytePosition++]}}t.default=f;},4229:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const i=r(8577),o=n(r(1050)),s=r(1074);class a extends o.default{constructor(e,t){if(super(e,t),"int"!==this.dataType)throw new i.CramUnimplementedError(`${this.dataType} decoding not yet implemented by GAMMA codec`)}decode(e,t,r,n){let i=1;for(;0===(0, s.getBits)(t.content,n.coreBlock,1);)i+=1;return ((0, s.getBits)(t.content,n.coreBlock,i-1)|1<<i-1)-this.parameters.offset}}t.default=a;},1074:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.getBits=t.CramBufferOverrunError=void 0;class r extends Error{}t.CramBufferOverrunError=r,t.getBits=function(e,t,n){let i=0;if(t.bytePosition+(7-t.bitPosition+n)/8>e.length)throw new r("read error during decoding. the file seems to be truncated.");for(let r=n;r;r--)i<<=1,i|=e[t.bytePosition]>>t.bitPosition&1,t.bitPosition-=1,t.bitPosition<0&&(t.bytePosition+=1),t.bitPosition&=7;return i};},2082:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const i=r(8577),o=n(r(1050)),s=r(1074);class a extends o.default{constructor(e,t){if(super(e,t),this.codes={},this.codeBook={},this.sortedByValue=[],this.sortedCodes=[],this.sortedValuesByBitCode=[],this.sortedBitCodes=[],this.sortedBitLengthsByBitCode=[],this.bitCodeToValue=[],!["byte","int"].includes(this.dataType))throw new TypeError(`${this.dataType} decoding not yet implemented by HUFFMAN_INT codec`);this.buildCodeBook(),this.buildCodes(),this.buildCaches(),0===this.sortedCodes[0].bitLength&&(this._decode=this._decodeZeroLengthCode);}buildCodeBook(){let e=new Array(this.parameters.numCodes);for(let t=0;t<this.parameters.numCodes;t+=1)e[t]={symbol:this.parameters.symbols[t],bitLength:this.parameters.bitLengths[t]};e=e.sort(((e,t)=>e.bitLength-t.bitLength||e.symbol-t.symbol)),this.codeBook={},e.forEach((e=>{this.codeBook[e.bitLength]||(this.codeBook[e.bitLength]=[]),this.codeBook[e.bitLength].push(e.symbol);}));}buildCodes(){this.codes={};let e=0,t=-1;Object.entries(this.codeBook).forEach((([r,n])=>{const o=parseInt(r,10);n.forEach((r=>{const n={bitLength:o,value:r,bitCode:0};t+=1;const s=o-e;if(t<<=s,n.bitCode=t,e+=s,function(e){let t=e-(e>>1)&1431655765;return t=(858993459&t)+(t>>2&858993459),16843009*(t+(t>>4)&252645135)>>24}(t)>o)throw new i.CramMalformedError("Symbol out of range");this.codes[r]=n;}));}));}buildCaches(){this.sortedCodes=Object.values(this.codes).sort(((e,t)=>e.bitLength-t.bitLength||e.bitCode-t.bitCode)),this.sortedByValue=Object.values(this.codes).sort(((e,t)=>e.value-t.value)),this.sortedValuesByBitCode=this.sortedCodes.map((e=>e.value)),this.sortedBitCodes=this.sortedCodes.map((e=>e.bitCode)),this.sortedBitLengthsByBitCode=this.sortedCodes.map((e=>e.bitLength));const e=Math.max(...this.sortedBitCodes);this.bitCodeToValue=new Array(e+1).fill(-1);for(let e=0;e<this.sortedBitCodes.length;e+=1)this.bitCodeToValue[this.sortedCodes[e].bitCode]=e;}decode(e,t,r,n){return this._decode(e,t,n.coreBlock)}_decodeZeroLengthCode(){return this.sortedCodes[0].value}_decode(e,t,r){const n=t.content;let o=0,a=0;for(let e=0;e<this.sortedCodes.length;e+=1){const t=this.sortedCodes[e].bitLength;a<<=t-o,a|=(0, s.getBits)(n,r,t-o),o=t;{const r=this.bitCodeToValue[a];if(r>-1&&this.sortedBitLengthsByBitCode[r]===t)return this.sortedValuesByBitCode[r];for(let r=e;this.sortedCodes[r+1].bitLength===t&&r<this.sortedCodes.length;r+=1)e+=1;}}throw new i.CramMalformedError("Huffman symbol not found.")}}t.default=a;},8772:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.instantiateCodec=void 0;const i=r(8577),o=n(r(2082)),s=n(r(5844)),a=n(r(1405)),f=n(r(1738)),h=n(r(4863)),l=n(r(4229)),u=n(r(8821)),c={1:s.default,3:o.default,4:f.default,5:a.default,6:h.default,7:u.default,9:l.default};t.instantiateCodec=function e(t,r){const n=(o="ignore"===r?0:t.codecId,c[o]);var o;if(!n)throw new i.CramUnimplementedError(`no codec implemented for codec ID ${t.codecId}`);return new n(t.parameters,r,e)};},8821:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const i=r(8577),o=n(r(1050)),s=r(1074);class a extends o.default{constructor(e,t){if(super(e,t),"int"!==this.dataType)throw new i.CramUnimplementedError(`${this.dataType} decoding not yet implemented by SUBEXP codec`)}decode(e,t,r,n){let i,o,a=0;for(;(0, s.getBits)(t.content,n.coreBlock,1);)a+=1;return 0===a?(i=this.parameters.K,o=(0, s.getBits)(t.content,n.coreBlock,i)):(i=a+this.parameters.K-1,o=1<<i|(0, s.getBits)(t.content,n.coreBlock,i)),o-this.parameters.offset}}t.default=a;},2615:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.default={CRAM_FLAG_PRESERVE_QUAL_SCORES:1,CRAM_FLAG_DETACHED:2,CRAM_FLAG_MATE_DOWNSTREAM:4,CRAM_FLAG_NO_SEQ:8,CRAM_FLAG_MASK:15,CRAM_M_REVERSE:1,CRAM_M_UNMAP:2,BAM_FPAIRED:1,BAM_FPROPER_PAIR:2,BAM_FUNMAP:4,BAM_FMUNMAP:8,BAM_FREVERSE:16,BAM_FMREVERSE:32,BAM_FREAD1:64,BAM_FREAD2:128,BAM_FSECONDARY:256,BAM_FQCFAIL:512,BAM_FDUP:1024,BAM_FSUPPLEMENTARY:2048,BAM_CMATCH:0,BAM_CINS:1,BAM_CDEL:2,BAM_CREF_SKIP:3,BAM_CSOFT_CLIP:4,BAM_CHARD_CLIP:5,BAM_CPAD:6,BAM_CEQUAL:7,BAM_CDIFF:8,BAM_CBACK:9,BAM_CIGAR_STR:"MIDNSHP:XB",BAM_CIGAR_SHIFT:4,BAM_CIGAR_MASK:15,BAM_CIGAR_TYPE:246183};},8543:(e,t,r)=>{Object.defineProperty(t,"__esModule",{value:!0});const n=r(8772),i=r(8577),o={BF:"int",CF:"int",RI:"int",RL:"int",AP:"int",RG:"int",MF:"int",NS:"int",NP:"int",TS:"int",NF:"int",TC:"byte",TN:"int",FN:"int",FC:"byte",FP:"int",BS:"byte",IN:"byteArray",SC:"byteArray",DL:"int",BA:"byte",BB:"byteArray",RS:"int",PD:"int",HC:"int",MQ:"int",RN:"byteArray",QS:"byte",QQ:"byteArray",TL:"int"};t.default=class{constructor(e){this.dataSeriesCodecCache={},this.tagCodecCache={},this.tagEncoding={},this.readNamesIncluded=e.preservation.RN,this.APdelta=e.preservation.AP,this.referenceRequired=!!e.preservation.RR,this.tagIdsDictionary=e.preservation.TD,this.substitutionMatrix=function(e){const t=new Array(5);for(let e=0;e<5;e+=1)t[e]=new Array(4);return t[0][e[0]>>6&3]="C",t[0][e[0]>>4&3]="G",t[0][e[0]>>2&3]="T",t[0][e[0]>>0&3]="N",t[1][e[1]>>6&3]="A",t[1][e[1]>>4&3]="G",t[1][e[1]>>2&3]="T",t[1][e[1]>>0&3]="N",t[2][e[2]>>6&3]="A",t[2][e[2]>>4&3]="C",t[2][e[2]>>2&3]="T",t[2][e[2]>>0&3]="N",t[3][e[3]>>6&3]="A",t[3][e[3]>>4&3]="C",t[3][e[3]>>2&3]="G",t[3][e[3]>>0&3]="N",t[4][e[4]>>6&3]="A",t[4][e[4]>>4&3]="C",t[4][e[4]>>2&3]="G",t[4][e[4]>>0&3]="T",t}(e.preservation.SM),this.dataSeriesEncoding=e.dataSeriesEncoding,this.tagEncoding=e.tagEncoding,this.preservation=e.preservation,this._size=e._size,this._endPosition=e._endPosition;}getCodecForTag(e){if(!this.tagCodecCache[e]){const t=this.tagEncoding[e];t&&(this.tagCodecCache[e]=(0, n.instantiateCodec)(t,"byteArray"));}return this.tagCodecCache[e]}getTagNames(e){return this.tagIdsDictionary[e]}getCodecForDataSeries(e){let t=this.dataSeriesCodecCache[e];if(void 0===t){const r=this.dataSeriesEncoding[e];if(r){const s=o[e];if(!s)throw new i.CramMalformedError(`data series name ${e} not defined in file compression header`);t=(0, n.instantiateCodec)(r,s),this.dataSeriesCodecCache[e]=t;}}return t}toJSON(){const e={};return Object.keys(this).forEach((t=>{/Cache$/.test(t)||(e[t]=this[t]);})),e}};},6284:function(e,t,r){var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e));}catch(e){o(e);}}function a(e){try{f(n.throw(e));}catch(e){o(e);}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t);}))).then(s,a);}f((n=n.apply(e,t||[])).next());}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const o=r(8577),s=r(9488),a=i(r(6601)),f=i(r(8543));class h{constructor(e,t){this.file=e,this.filePosition=t;}getHeader(){return this._readContainerHeader(this.filePosition)}getCompressionHeaderBlock(){return n(this,void 0,void 0,(function*(){if(!(yield this.getHeader()).numRecords)return null;const e=yield this.file.getSectionParsers(),t=yield this.getFirstBlock();if(void 0===t)return;if("COMPRESSION_HEADER"!==t.contentType)throw new o.CramMalformedError(`invalid content type ${t.contentType} in what is supposed to be the compression header block`);const r=(0, s.parseItem)(t.content,e.cramCompressionHeader.parser,0,t.contentPosition);return Object.assign(Object.assign({},t),{parsedContent:r})}))}getFirstBlock(){return n(this,void 0,void 0,(function*(){const e=yield this.getHeader();return this.file.readBlock(e._endPosition)}))}getCompressionScheme(){return n(this,void 0,void 0,(function*(){const e=yield this.getCompressionHeaderBlock();if(e)return new f.default(e.parsedContent)}))}getSlice(e,t){return new a.default(this,e,t)}_readContainerHeader(e){return n(this,void 0,void 0,(function*(){const t=yield this.file.getSectionParsers(),{cramContainerHeader1:r,cramContainerHeader2:n}=t,{size:i}=yield this.file.stat();if(e>=i)return;const o=Buffer.allocUnsafe(r.maxLength);yield this.file.read(o,0,r.maxLength,e);const a=(0, s.parseItem)(o,r.parser),f=(0, s.itf8Size)(a.numLandmarks);if(e+a.length>=i)return void console.warn(`${this.file}: container header at ${e} indicates that the container has length ${a.length}, which extends beyond the length of the file. Skipping this container.`);const h=Buffer.allocUnsafe(n.maxLength(a.numLandmarks));yield this.file.read(h,0,n.maxLength(a.numLandmarks),e+a._size-f);const l=(0, s.parseItem)(h,n.parser);return this.file.validateChecksums&&void 0!==l.crc32&&(yield this.file.checkCrc32(e,a._size+l._size-f-4,l.crc32,`container header beginning at position ${e}`)),Object.assign(a,l,{_size:a._size+l._size-f,_endPosition:a._size+l._size-f+e})}))}}t.default=h,"getHeader getCompressionHeaderBlock getCompressionScheme".split(" ").forEach((e=>(0, s.tinyMemoize)(h,e)));},5457:function(e,t,r){var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e));}catch(e){o(e);}}function a(e){try{f(n.throw(e));}catch(e){o(e);}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t);}))).then(s,a);}f((n=n.apply(e,t||[])).next());}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const o=r(597),s=i(r(2779)),a=i(r(1269)),f=r(8577),h=i(r(9675)),l=r(6141),u=i(r(3498)),c=i(r(6284)),d=r(3427),p=r(9488),g=r(7578);class m{constructor(e){var t;if(this.file=(0, d.open)(e.url,e.path,e.filehandle),this.validateChecksums=!0,this.fetchReferenceSequenceCallback=e.seqFetch,this.options={checkSequenceMD5:e.checkSequenceMD5,cacheSize:null!==(t=e.cacheSize)&&void 0!==t?t:2e4},this.featureCache=new a.default({maxSize:this.options.cacheSize}),function(){const e=new Uint32Array([287454020]),t=new Uint8Array(e.buffer);return 68===t[0]?0:17===t[0]?1:2}()>0)throw new Error("Detected big-endian machine, may be unable to run")}read(e,t,r,n){return this.file.read(e,t,r,n)}stat(){return this.file.stat()}getDefinition(){return n(this,void 0,void 0,(function*(){const e=Buffer.allocUnsafe(l.cramFileDefinition.maxLength);yield this.file.read(e,0,l.cramFileDefinition.maxLength,0);const t=l.cramFileDefinition.parser.parse(e).result;if(2!==t.majorVersion&&3!==t.majorVersion)throw new f.CramUnimplementedError(`CRAM version ${t.majorVersion} not supported`);return t}))}getSamHeader(){return n(this,void 0,void 0,(function*(){const e=yield this.getContainerById(0);if(!e)throw new f.CramMalformedError("file contains no containers");const t=yield e.getFirstBlock();if(void 0===t)return (0, g.parseHeaderText)("");const r=t.content,n=r.readInt32LE(0),i=r.toString("utf8",4,4+n);return this.header=i,(0, g.parseHeaderText)(i)}))}getHeaderText(){return n(this,void 0,void 0,(function*(){return yield this.getSamHeader(),this.header}))}getSectionParsers(){return n(this,void 0,void 0,(function*(){const{majorVersion:e}=yield this.getDefinition();return (0, l.getSectionParsers)(e)}))}getContainerById(e){return n(this,void 0,void 0,(function*(){const t=yield this.getSectionParsers();let r=t.cramFileDefinition.maxLength;const{size:n}=yield this.file.stat(),{cramContainerHeader1:i}=t;let o;for(let t=0;t<=e;t+=1){if(r+i.maxLength+8>=n)return;o=this.getContainerAtPosition(r);const s=yield o.getHeader();if(!s)throw new f.CramMalformedError(`container ${e} not found in file`);if(0===t){r=s._endPosition;for(let e=0;e<s.numBlocks;e+=1){const e=yield this.readBlock(r);if(void 0===e)return;r=e._endPosition;}}else r+=s._size+s.length;}return o}))}checkCrc32(e,t,r,i){return n(this,void 0,void 0,(function*(){const n=Buffer.allocUnsafe(t);yield this.file.read(n,0,t,e);const o=s.default.unsigned(n);if(o!==r)throw new f.CramMalformedError(`crc mismatch in ${i}: recorded CRC32 = ${r}, but calculated CRC32 = ${o}`)}))}containerCount(){return n(this,void 0,void 0,(function*(){const e=yield this.getSectionParsers(),{size:t}=yield this.file.stat(),{cramContainerHeader1:r}=e;let n=0,i=e.cramFileDefinition.maxLength;for(;i+r.maxLength+8<t;){const e=yield this.getContainerAtPosition(i).getHeader();if(!e)break;if(0===n){i=e._endPosition;for(let t=0;t<e.numBlocks;t+=1){const e=yield this.readBlock(i);if(void 0===e)return;i=e._endPosition;}}else i+=e._size+e.length;n+=1;}return n}))}getContainerAtPosition(e){return new c.default(this,e)}readBlockHeader(e){return n(this,void 0,void 0,(function*(){const t=yield this.getSectionParsers(),{cramBlockHeader:r}=t,{size:n}=yield this.file.stat();if(e+r.maxLength>=n)return;const i=Buffer.allocUnsafe(r.maxLength);return yield this.file.read(i,0,r.maxLength,e),(0, p.parseItem)(i,r.parser,0,e)}))}_parseSection(e,t,r=e.maxLength,i){return n(this,void 0,void 0,(function*(){let n;if(i)n=i;else {const{size:e}=yield this.file.stat();if(t+r>=e)return;n=Buffer.allocUnsafe(r),yield this.file.read(n,0,r,t);}const o=(0, p.parseItem)(n,e.parser,0,t);if(o._size!==r)throw new f.CramMalformedError(`section read error: requested size ${r} does not equal parsed size ${o._size}`);return o}))}_uncompress(e,t,r){if("gzip"===e)(0, o.unzip)(t).copy(r);else if("bzip2"===e){const e=bzip2.array(t);let n,i=bzip2.header(e),o=0;do{n=bzip2.decompress(e,i),-1!=n&&(Buffer.from(n).copy(r,o),o+=n.length,i-=n.length);}while(-1!=n)}else if("rans"===e)(0, h.default)(t,r);else if("rans4x16"===e)u.default.r4x16_uncompress(t,r);else if("arith"===e)u.default.arith_uncompress(t,r);else if("fqzcomp"===e)u.default.fqzcomp_uncompress(t,r);else {if("tok3"!==e)throw new f.CramUnimplementedError(`${e} decompression not yet implemented`);u.default.tok3_uncompress(t,r);}}readBlock(e){return n(this,void 0,void 0,(function*(){const{majorVersion:t}=yield this.getDefinition(),r=yield this.getSectionParsers(),n=yield this.readBlockHeader(e);if(void 0===n)return;const i=n._endPosition,o=Buffer.allocUnsafe(n.uncompressedSize),s=Object.assign(Object.assign({},n),{_endPosition:i,contentPosition:i,content:o});if("raw"!==n.compressionMethod){const e=Buffer.allocUnsafe(n.compressedSize);yield this.read(e,0,n.compressedSize,i),this._uncompress(n.compressionMethod,e,o);}else yield this.read(o,0,n.uncompressedSize,i);if(t>=3){const t=yield this._parseSection(r.cramBlockCrc32,i+n.compressedSize);if(void 0===t)return;s.crc32=t.crc32,this.validateChecksums&&(yield this.checkCrc32(e,n._size+n.compressedSize,t.crc32,"block data")),s._endPosition=t._endPosition,s._size=s.compressedSize+r.cramBlockCrc32.maxLength;}else s._endPosition=i+s.compressedSize,s._size=s.compressedSize;return s}))}}t.default=m,"getDefinition getSectionParsers getSamHeader".split(" ").forEach((e=>(0, p.tinyMemoize)(m,e)));},8222:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.CramRecord=void 0;const i=n(r(5457));var o=r(8631);Object.defineProperty(t,"CramRecord",{enumerable:!0,get:function(){return n(o).default}}),t.default=i.default;},8631:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.MateFlagsDecoder=t.CramFlagsDecoder=t.BamFlagsDecoder=t.MateFlags=t.CramFlags=t.BamFlags=void 0;const i=n(r(2615)),o={a:0,A:0,c:1,C:1,g:2,G:2,t:3,T:3,n:4,N:4};function s(e){const t={};for(const[r,n]of e)t["is"+n]=e=>!!(e&r),t["set"+n]=e=>e|r;return t}t.BamFlags=[[1,"Paired"],[2,"ProperlyPaired"],[4,"SegmentUnmapped"],[8,"MateUnmapped"],[16,"ReverseComplemented"],[32,"MateReverseComplemented"],[64,"Read1"],[128,"Read2"],[256,"Secondary"],[512,"FailedQc"],[1024,"Duplicate"],[2048,"Supplementary"]],t.CramFlags=[[1,"PreservingQualityScores"],[2,"Detached"],[4,"WithMateDownstream"],[8,"DecodeSequenceAsStar"]],t.MateFlags=[[1,"OnNegativeStrand"],[2,"Unmapped"]],t.BamFlagsDecoder=s(t.BamFlags),t.CramFlagsDecoder=s(t.CramFlags),t.MateFlagsDecoder=s(t.MateFlags),t.default=class{constructor({flags:e,cramFlags:t,readLength:r,mappingQuality:n,lengthOnRef:i,qualityScores:o,mateRecordNumber:s,readBases:a,readFeatures:f,mateToUse:h,readGroupId:l,readName:u,sequenceId:c,uniqueId:d,templateSize:p,alignmentStart:g,tags:m}){this.flags=e,this.cramFlags=t,this.readLength=r,this.mappingQuality=n,this.lengthOnRef=i,this.qualityScores=o,a&&(this.readBases=a),this.readGroupId=l,this.readName=u,this.sequenceId=c,this.uniqueId=d,this.templateSize=p,this.alignmentStart=g,this.tags=m,f&&(this.readFeatures=f),h&&(this.mate={flags:h.mateFlags,readName:h.mateReadName,sequenceId:h.mateSequenceId,alignmentStart:h.mateAlignmentStart}),s&&(this.mateRecordNumber=s);}isPaired(){return !!(this.flags&i.default.BAM_FPAIRED)}isProperlyPaired(){return !!(this.flags&i.default.BAM_FPROPER_PAIR)}isSegmentUnmapped(){return !!(this.flags&i.default.BAM_FUNMAP)}isMateUnmapped(){return !!(this.flags&i.default.BAM_FMUNMAP)}isReverseComplemented(){return !!(this.flags&i.default.BAM_FREVERSE)}isMateReverseComplemented(){return !!(this.flags&i.default.BAM_FMREVERSE)}isRead1(){return !!(this.flags&i.default.BAM_FREAD1)}isRead2(){return !!(this.flags&i.default.BAM_FREAD2)}isSecondary(){return !!(this.flags&i.default.BAM_FSECONDARY)}isFailedQc(){return !!(this.flags&i.default.BAM_FQCFAIL)}isDuplicate(){return !!(this.flags&i.default.BAM_FDUP)}isSupplementary(){return !!(this.flags&i.default.BAM_FSUPPLEMENTARY)}isDetached(){return !!(this.cramFlags&i.default.CRAM_FLAG_DETACHED)}hasMateDownStream(){return !!(this.cramFlags&i.default.CRAM_FLAG_MATE_DOWNSTREAM)}isPreservingQualityScores(){return !!(this.cramFlags&i.default.CRAM_FLAG_PRESERVE_QUAL_SCORES)}isUnknownBases(){return !!(this.cramFlags&i.default.CRAM_FLAG_NO_SEQ)}getReadBases(){if(!this.readBases&&this._refRegion){const e=function(e,t){if(!e.lengthOnRef&&!e.readLength)return null;if(e.isUnknownBases())return null;const r=e.alignmentStart-t.start;if(!e.readFeatures)return t.seq.substr(r,e.lengthOnRef).toUpperCase();let n="",i=r,o=0;for(;n.length<e.readLength;)if(o<e.readFeatures.length){const r=e.readFeatures[o];if("Q"===r.code||"q"===r.code)o+=1;else if(r.pos===n.length+1)if(o+=1,"b"===r.code){const e=r.data;n+=e,i+=e.length;}else "B"===r.code?(n+=r.data[0],i+=1):"X"===r.code?(n+=r.sub,i+=1):"I"===r.code?n+=r.data:"D"===r.code?i+=r.data:"i"===r.code?n+=r.data:"N"===r.code?i+=r.data:"S"===r.code?n+=r.data:"P"===r.code||r.code;else if(o<e.readFeatures.length){const r=t.seq.substr(i,e.readFeatures[o].pos-n.length-1);n+=r,i+=r.length;}}else {const r=t.seq.substr(i,e.readLength-n.length);n+=r,i+=r.length;}return n.toUpperCase()}(this,this._refRegion);e&&(this.readBases=e);}return this.readBases}getPairOrientation(){if(!this.isSegmentUnmapped()&&this.isPaired()&&!this.isMateUnmapped()&&this.mate&&this.sequenceId===this.mate.sequenceId){const e=this.isReverseComplemented()?"R":"F",t=this.isMateReverseComplemented()?"R":"F";let r=" ",n=" ";this.isRead1()?(r="1",n="2"):this.isRead2()&&(r="2",n="1");const i=[];let o=this.templateLength||this.templateSize;if(void 0===o)throw new Error("One of templateSize and templateLength must be set");return this.alignmentStart>this.mate.alignmentStart&&o>0&&(o=-o),o>0?(i[0]=e,i[1]=r,i[2]=t,i[3]=n):(i[2]=e,i[3]=r,i[0]=t,i[1]=n),i.join("")}return null}addReferenceSequence(e,t){this.readFeatures&&this.readFeatures.forEach((r=>{"X"===r.code&&function(e,t,r,n){if(!t)return;const i=n.refPos-t.start,s=t.seq.charAt(i);s&&(n.ref=s);let a=o[s];void 0===a&&(a=4);const f=r.substitutionMatrix[a][n.data];f&&(n.sub=f);}(0,e,t,r);})),!this.readBases&&e.start<=this.alignmentStart&&e.end>=this.alignmentStart+(this.lengthOnRef||this.readLength)-1&&(this._refRegion=e);}toJSON(){const e={};return Object.keys(this).forEach((t=>{"_"!==t.charAt(0)&&(e[t]=this[t]);})),e.readBases=this.getReadBases(),e}};},6141:(e,t,r)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.getSectionParsers=t.cramFileDefinition=t.isMappedSliceHeader=void 0;const n=r(9996),i=(new n.Parser).itf8(),o={parser:(new n.Parser).string("magic",{length:4}).uint8("majorVersion").uint8("minorVersion").string("fileId",{length:20,stripNull:!0}),maxLength:26};t.cramFileDefinition=o;const s={parser:(new n.Parser).uint8("compressionMethod",{formatter:e=>{const t=["raw","gzip","bzip2","lzma","rans","rans4x16","arith","fqzcomp","tok3"][e];if(!t)throw new Error(`compression method number ${e} not implemented`);return t}}).uint8("contentType",{formatter:e=>{const t=["FILE_HEADER","COMPRESSION_HEADER","MAPPED_SLICE_HEADER","UNMAPPED_SLICE_HEADER","EXTERNAL_DATA","CORE_DATA"][e];if(!t)throw new Error(`invalid block content type id ${e}`);return t}}).itf8("contentId").itf8("compressedSize").itf8("uncompressedSize"),maxLength:17},a={parser:(new n.Parser).uint32("crc32"),maxLength:4},f=(new n.Parser).itf8("size").buffer("ents",{length:"size",formatter:e=>{function t(t,r){const n=e.toString("utf8",t,r),i=[];for(let e=0;e<n.length;e+=3)i.push(n.substr(e,3));return i}var r,n=[],i=0;for(r=0;r<e.length;r+=1)e[r]||(n.push(t(i,r)),i=r+1);return r>i&&n.push(t(i,r)),n}}),h=(new n.Parser).uint8(null,{formatter:e=>!!e}),l=(new n.Parser).itf8("mapSize").itf8("mapCount").array("ents",{length:"mapCount",type:(new n.Parser).string("key",{length:2,stripNull:!1}).choice("value",{tag:"key",choices:{MI:h,UI:h,PI:h,RN:h,AP:h,RR:h,SM:(new n.Parser).array(null,{type:"uint8",length:5}),TD:(new n.Parser).nest(null,{type:f,formatter:e=>e.ents})}})});function u(e){const t={};for(let r=0;r<e.ents.length;r+=1){const{key:n,value:i}=e.ents[r];t[n]&&console.warn(`duplicate key ${n} in map`),t[n]=i;}return t}const c={cramFileDefinition:o,cramBlockHeader:s,cramBlockCrc32:a};t.isMappedSliceHeader=function(e){return "number"==typeof e.refSeqId};const d={cramUnmappedSliceHeader(e){let t=0,r=(new n.Parser).itf8("numRecords");return t+=5,e>=3?(r=r.ltf8("recordCounter"),t+=9):2===e&&(r=r.itf8("recordCounter"),t+=5),r=r.itf8("numBlocks").itf8("numContentIds").array("contentIds",{type:i,length:"numContentIds"}),t+=10,e>=2&&(r=r.array("md5",{type:"uint8",length:16}),t+=16),{parser:r,maxLength:e=>t+5*e}},cramMappedSliceHeader(e){let t=(new n.Parser).itf8("refSeqId").itf8("refSeqStart").itf8("refSeqSpan").itf8("numRecords"),r=20;return e>=3?(t=t.ltf8("recordCounter"),r+=9):2===e&&(t=t.itf8("recordCounter"),r+=5),t=t.itf8("numBlocks").itf8("numContentIds").array("contentIds",{type:i,length:"numContentIds"}).itf8("refBaseBlockId"),r+=15,e>=2&&(t=t.array("md5",{type:"uint8",length:16}),r+=16),{parser:t,maxLength:e=>r+5*e}},cramEncoding:e=>({parser:(new n.Parser).namely("cramEncoding").itf8("codecId").itf8("parametersBytes").choice("parameters",{tag:"codecId",choices:{0:new n.Parser,1:(new n.Parser).itf8("blockContentId"),2:(new n.Parser).itf8("offset").itf8("M"),3:n.Parser.start().itf8("numCodes").array("symbols",{length:"numCodes",type:i}).itf8("numLengths").array("bitLengths",{length:"numLengths",type:i}),4:n.Parser.start().nest("lengthsEncoding",{type:"cramEncoding"}).nest("valuesEncoding",{type:"cramEncoding"}),5:(new n.Parser).uint8("stopByte").itf8("blockContentId"),6:(new n.Parser).itf8("offset").itf8("length"),7:(new n.Parser).itf8("offset").itf8("K"),8:(new n.Parser).itf8("offset").itf8("log2m"),9:(new n.Parser).itf8("offset")}})}),cramDataSeriesEncodingMap(e){return (new n.Parser).itf8("mapSize").itf8("mapCount").array("ents",{length:"mapCount",type:(new n.Parser).string("key",{length:2,stripNull:!1}).nest("value",{type:this.cramEncoding(e).parser})})},cramTagEncodingMap(e){return (new n.Parser).itf8("mapSize").itf8("mapCount").array("ents",{length:"mapCount",type:(new n.Parser).itf8("key",{formatter:e=>String.fromCharCode(e>>16&255)+String.fromCharCode(e>>8&255)+String.fromCharCode(255&e)}).nest("value",{type:this.cramEncoding(e).parser})})},cramCompressionHeader(e){let t=new n.Parser;return t=t.nest("preservation",{type:l,formatter:u}).nest("dataSeriesEncoding",{type:this.cramDataSeriesEncodingMap(e),formatter:u}).nest("tagEncoding",{type:this.cramTagEncodingMap(e),formatter:u}),{parser:t}},cramContainerHeader1(e){let t=(new n.Parser).int32("length").itf8("refSeqId").itf8("refSeqStart").itf8("alignmentSpan").itf8("numRecords"),r=24;return e>=3?(t=t.ltf8("recordCounter"),r+=9):2===e&&(t=t.itf8("recordCounter"),r+=5),e>1&&(t=t.ltf8("numBases"),r+=9),t=t.itf8("numBlocks").itf8("numLandmarks"),r+=10,{parser:t,maxLength:r}},cramContainerHeader2(e){let t=(new n.Parser).itf8("numLandmarks").array("landmarks",{type:(new n.Parser).itf8(),length:"numLandmarks"}),r=0;return e>=3&&(t=t.uint32("crc32"),r=4),{parser:t,maxLength:e=>5+5*e+r}}};t.getSectionParsers=function(e){const t=Object.assign({},c);return Object.keys(d).forEach((r=>{t[r]=d[r](e);})),t};},3757:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const i=n(r(3720)),o=r(8577),s=r(8631),a=r(6141);function f(e){let t="";for(let r=0;r<e.length&&0!==e[r];r++)t+=String.fromCharCode(e[r]);return t}function h(e,t){if("Z"===e)return f(t);if("A"===e)return String.fromCharCode(t[0]);if("I"===e)return i.default.fromBytesLE(t).toNumber();if("i"===e)return new Int32Array(t.buffer)[0];if("s"===e)return new Int16Array(t.buffer)[0];if("S"===e)return new Uint16Array(t.buffer)[0];if("c"===e)return new Int8Array(t.buffer)[0];if("C"===e)return t[0];if("f"===e)return new Float32Array(t.buffer)[0];if("H"===e)return Number.parseInt(f(t).replace(/^0x/,""),16);if("B"===e)return function(e){const t=String.fromCharCode(e[0]),r=Int32Array.from(e.slice(1))[0],n=new Array(r);if(e=e.slice(5),"c"===t){const t=new Int8Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e];}else if("C"===t){const t=new Uint8Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e];}else if("s"===t){const t=new Int16Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e];}else if("S"===t){const t=new Uint16Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e];}else if("i"===t){const t=new Int32Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e];}else if("I"===t){const t=new Uint32Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e];}else {if("f"!==t)throw new Error("unknown type: "+t);{const t=new Float32Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e];}}return n}(t);throw new o.CramMalformedError(`Unrecognized tag type ${e}`)}t.default=function(e,t,r,n,i,l,u,c,d){let p=t("BF");const g=t("CF");if(!(0, a.isMappedSliceHeader)(n.parsedContent))throw new Error;let m;m=c>1&&-2===n.parsedContent.refSeqId?t("RI"):n.parsedContent.refSeqId;const y=t("RL");let b=t("AP");r.APdelta&&(b+=u.lastAlignmentStart),u.lastAlignmentStart=b;const v=t("RG");let w,_,B,E;if(r.readNamesIncluded&&(w=f(t("RN"))),s.CramFlagsDecoder.isDetached(g)){const e=t("MF");let n;r.readNamesIncluded||(n=f(t("RN")),w=n);const i=t("NS"),o=t("NP");(e||i>-1)&&(_={mateFlags:e,mateSequenceId:i,mateAlignmentStart:o,mateReadName:n}),B=t("TS"),s.MateFlagsDecoder.isUnmapped(e)&&(p=s.BamFlagsDecoder.setMateUnmapped(p)),s.MateFlagsDecoder.isOnNegativeStrand(e)&&(p=s.BamFlagsDecoder.setMateReverseComplemented(p));}else s.CramFlagsDecoder.isWithMateDownstream(g)&&(E=t("NF")+d+1);const S=t("TL");if(S<0)throw new o.CramMalformedError("invalid TL index");const A={},C=r.getTagNames(S),R=C.length;for(let t=0;t<R;t+=1){const n=C[t],s=n.substr(0,2),a=n.substr(2,1),f=r.getCodecForTag(n);if(!f)throw new o.CramMalformedError(`no codec defined for auxiliary tag ${n}`);const c=f.decode(e,i,l,u);A[s]=h(a,c);}let k,x,I,M,F;if(s.BamFlagsDecoder.isSegmentUnmapped(p))if(s.CramFlagsDecoder.isDecodeSequenceAsStar(g))F=null,M=null;else {const e=new Array(y);for(let r=0;r<e.length;r+=1)e[r]=t("BA");if(F=String.fromCharCode(...e),s.CramFlagsDecoder.isPreservingQualityScores(g)){M=new Array(y);for(let r=0;r<e.length;r+=1)M[r]=t("QS");}}else {const e=t("FN");if(e&&(k=function(e,t,r,n,i){let s=0,a=e-1;const f=new Array(t);function h([e,t]){const n=r(t);if("character"===e)return String.fromCharCode(n);if("string"===e){let e="";for(let t=0;t<n.byteLength;t++)e+=String.fromCharCode(n[t]);return e}return "numArray"===e?n.toArray():n}for(let e=0;e<t;e+=1){const t=String.fromCharCode(r("FC")),n=r("FP"),l={B:["character","BA"],S:["string",i>1?"SC":"IN"],X:["number","BS"],D:["number","DL"],I:["string","IN"],i:["character","BA"],b:["string","BB"],q:["numArray","QQ"],Q:["number","QS"],H:["number","HC"],P:["number","PD"],N:["number","RS"]}[t];if(!l)throw new o.CramMalformedError(`invalid read feature code "${t}"`);let u=h(l);const c={B:["number","QS"]}[t];c&&(u=[u,h(c)]),s+=n;const d=s;a+=n;const p=a;"D"===t||"N"===t?a+=u:"I"===t||"S"===t?a-=u.length:"i"===t&&(a-=1),f[e]={code:t,pos:d,refPos:p,data:u};}return f}(b,e,t,0,c)),x=y,k)for(const{code:e,data:t}of k)"D"===e||"N"===e?x+=t:"I"===e||"S"===e?x-=t.length:"i"===e&&(x-=1);if(Number.isNaN(x)&&(console.warn(`${w||`${m}:${b}`} record has invalid read features`),x=y),I=t("MQ"),s.CramFlagsDecoder.isPreservingQualityScores(g)){M=new Array(y);for(let e=0;e<M.length;e++)M[e]=t("QS");}}return {readLength:y,sequenceId:m,cramFlags:g,flags:p,alignmentStart:b,readGroupId:v,readName:w,mateToUse:_,templateSize:B,mateRecordNumber:E,readFeatures:k,lengthOnRef:x,mappingQuality:I,qualityScores:M,readBases:F,tags:A}};},6601:function(e,t,r){var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e));}catch(e){o(e);}}function a(e){try{f(n.throw(e));}catch(e){o(e);}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t);}))).then(s,a);}f((n=n.apply(e,t||[])).next());}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const o=r(8577),s=r(9488),a=i(r(2615)),f=i(r(3757)),h=i(r(8631)),l=r(6141),u=r(1074);function c(e,t,r,n){if(!n)throw new o.CramMalformedError("could not resolve intra-slice mate pairs, file seems truncated or malformed");const i=!!(n.mate||void 0!==n.mateRecordNumber&&n.mateRecordNumber!==t);r.readName||(r.readName=String(r.uniqueId),n.readName=r.readName),r.mate={sequenceId:n.sequenceId,alignmentStart:n.alignmentStart,uniqueId:n.uniqueId},n.readName&&(r.mate.readName=n.readName),n.mate||void 0!==n.mateRecordNumber||(n.mate={sequenceId:r.sequenceId,alignmentStart:r.alignmentStart,uniqueId:r.uniqueId},r.readName&&(n.mate.readName=r.readName)),r.flags|=a.default.BAM_FPAIRED,n.flags&a.default.BAM_FUNMAP&&(r.flags|=a.default.BAM_FMUNMAP),r.flags&a.default.BAM_FUNMAP&&(n.flags|=a.default.BAM_FMUNMAP),n.flags&a.default.BAM_FREVERSE&&(r.flags|=a.default.BAM_FMREVERSE),r.flags&a.default.BAM_FREVERSE&&(n.flags|=a.default.BAM_FMREVERSE),void 0===r.templateLength&&(i?function(e,t,r){const n=function t(r){const n=[r];if(void 0!==r.mateRecordNumber&&r.mateRecordNumber>=0){const i=e[r.mateRecordNumber];if(!i)throw new o.CramMalformedError("intra-slice mate record not found, this file seems malformed");n.push(...t(i));}return n}(r),i=n.map((e=>e.alignmentStart)),s=n.map((e=>e.alignmentStart+e.readLength-1)),a=Math.max(...s)-Math.min(...i)+1;a>=0&&n.forEach((e=>{if(void 0!==e.templateLength)throw new o.CramMalformedError("mate pair group has some members that have template lengths already, this file seems malformed");e.templateLength=a;}));}(e,0,r):function(e,t){const r=Math.min(e.alignmentStart,t.alignmentStart),n=Math.max(e.alignmentStart+e.readLength-1,t.alignmentStart+t.readLength-1)-r+1;e.templateLength=n,t.templateLength=n;}(r,n)),delete r.mateRecordNumber;}class d{constructor(e,t,r){this.container=e,this.containerPosition=t,this.file=e.file;}getHeader(){return n(this,void 0,void 0,(function*(){const e=yield this.file.getSectionParsers(),t=yield this.container.getHeader(),r=yield this.file.readBlock(t._endPosition+this.containerPosition);if(void 0===r)throw new Error;if("MAPPED_SLICE_HEADER"===r.contentType){const n=(0, s.parseItem)(r.content,e.cramMappedSliceHeader.parser,0,t._endPosition);return Object.assign(Object.assign({},r),{parsedContent:n})}if("UNMAPPED_SLICE_HEADER"===r.contentType){const n=(0, s.parseItem)(r.content,e.cramUnmappedSliceHeader.parser,0,t._endPosition);return Object.assign(Object.assign({},r),{parsedContent:n})}throw new o.CramMalformedError(`error reading slice header block, invalid content type ${r.contentType}`)}))}getBlocks(){return n(this,void 0,void 0,(function*(){const e=yield this.getHeader();let t=e._endPosition;const r=new Array(e.parsedContent.numBlocks);for(let e=0;e<r.length;e+=1){const n=yield this.file.readBlock(t);if(void 0===n)throw new Error;r[e]=n,t=r[e]._endPosition;}return r}))}getCoreDataBlock(){return n(this,void 0,void 0,(function*(){return (yield this.getBlocks())[0]}))}_getBlocksContentIdIndex(){return n(this,void 0,void 0,(function*(){const e=yield this.getBlocks(),t={};return e.forEach((e=>{"EXTERNAL_DATA"===e.contentType&&(t[e.contentId]=e);})),t}))}getBlockByContentId(e){return n(this,void 0,void 0,(function*(){return (yield this._getBlocksContentIdIndex())[e]}))}getReferenceRegion(){return n(this,void 0,void 0,(function*(){const e=(yield this.getHeader()).parsedContent;if(!(0, l.isMappedSliceHeader)(e))throw new Error;if(e.refSeqId<0)return;const t=yield this.container.getCompressionScheme();if(void 0===t)throw new Error;if(e.refBaseBlockId>=0){const t=yield this.getBlockByContentId(e.refBaseBlockId);if(!t)throw new o.CramMalformedError("embedded reference specified, but reference block does not exist");return {seq:t.data.toString("utf8"),start:e.refSeqStart,end:e.refSeqStart+e.refSeqSpan-1,span:e.refSeqSpan}}if(t.referenceRequired||this.file.fetchReferenceSequenceCallback){if(!this.file.fetchReferenceSequenceCallback)throw new Error("reference sequence not embedded, and seqFetch callback not provided, cannot fetch reference sequence");const t=yield this.file.fetchReferenceSequenceCallback(e.refSeqId,e.refSeqStart,e.refSeqStart+e.refSeqSpan-1);if(t.length!==e.refSeqSpan)throw new o.CramArgumentError("seqFetch callback returned a reference sequence of the wrong length");return {seq:t,start:e.refSeqStart,end:e.refSeqStart+e.refSeqSpan-1,span:e.refSeqSpan}}}))}getAllRecords(){return this.getRecords((()=>!0))}_fetchRecords(){return n(this,void 0,void 0,(function*(){const{majorVersion:e}=yield this.file.getDefinition(),t=yield this.container.getCompressionScheme();if(void 0===t)throw new Error;const r=yield this.getHeader();if(void 0===r)throw new Error;const n=yield this._getBlocksContentIdIndex();if(e>1&&this.file.options.checkSequenceMD5&&(0, l.isMappedSliceHeader)(r.parsedContent)&&r.parsedContent.refSeqId>=0&&"0000000000000000"!==r.parsedContent.md5.join("")){const e=yield this.getReferenceRegion();if(e){const{seq:t,start:n,end:i}=e,a=(0, s.sequenceMD5)(t),f=r.parsedContent.md5.map((e=>(e<16?"0":"")+e.toString(16))).join("");if(a!==f)throw new o.CramMalformedError(`MD5 checksum reference mismatch for ref ${r.parsedContent.refSeqId} pos ${n}..${i}. recorded MD5: ${f}, calculated MD5: ${a}`)}}const i=yield this.getCoreDataBlock(),a={lastAlignmentStart:(0, l.isMappedSliceHeader)(r.parsedContent)?r.parsedContent.refSeqStart:0,coreBlock:{bitPosition:7,bytePosition:0},externalBlocks:{map:new Map,getCursor(e){let t=this.map.get(e);return void 0===t&&(t={bitPosition:7,bytePosition:0},this.map.set(e,t)),t}}},d=e=>{const r=t.getCodecForDataSeries(e);if(!r)throw new o.CramMalformedError(`no codec defined for ${e} data series`);return r.decode(this,i,n,a)};let p=new Array(r.parsedContent.numRecords);for(let o=0;o<p.length;o+=1)try{const s=(0,f.default)(this,d,t,r,i,n,a,e,o);p[o]=new h.default(Object.assign(Object.assign({},s),{uniqueId:r.contentPosition+r.parsedContent.recordCounter+o+1}));}catch(e){if(e instanceof u.CramBufferOverrunError){console.warn("read attempted beyond end of buffer, file seems truncated."),p=p.filter((e=>!!e));break}throw e}for(let e=0;e<p.length;e+=1){const{mateRecordNumber:t}=p[e];void 0!==t&&t>=0&&c(p,e,p[e],p[t]);}return p}))}getRecords(e){return n(this,void 0,void 0,(function*(){const t=this.container.filePosition+this.containerPosition;let r=this.file.featureCache.get(t.toString());r||(r=this._fetchRecords(),this.file.featureCache.set(t.toString(),r));const i=(yield r).filter(e);if(i.length&&this.file.fetchReferenceSequenceCallback){const e=yield this.getHeader();if((0, l.isMappedSliceHeader)(e.parsedContent)&&(e.parsedContent.refSeqId>=0||-2===e.parsedContent.refSeqId)){const t=e.parsedContent.refSeqId>=0?e.parsedContent.refSeqId:void 0,r=yield this.container.getCompressionScheme();if(void 0===r)throw new Error;const o={};for(let e=0;e<i.length;e+=1){const r=void 0!==t?t:i[e].sequenceId;let n=o[r];n||(n={id:r,start:i[e].alignmentStart,end:-1/0,seq:null},o[r]=n);const s=i[e].alignmentStart+(i[e].lengthOnRef||i[e].readLength)-1;s>n.end&&(n.end=s),i[e].alignmentStart<n.start&&(n.start=i[e].alignmentStart);}yield Promise.all(Object.values(o).map((e=>n(this,void 0,void 0,(function*(){-1!==e.id&&e.start<=e.end&&(e.seq=yield this.file.fetchReferenceSequenceCallback(e.id,e.start,e.end));})))));for(let e=0;e<i.length;e+=1){const n=o[void 0!==t?t:i[e].sequenceId];if(n&&n.seq){const t=n.seq;i[e].addReferenceSequence(Object.assign(Object.assign({},n),{seq:t}),r);}}}}return i}))}}t.default=d,"getHeader getBlocks _getBlocksContentIdIndex".split(" ").forEach((e=>(0, s.tinyMemoize)(d,e)));},9488:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.sequenceMD5=t.tinyMemoize=t.parseItem=t.parseItf8=t.itf8Size=void 0;const i=n(r(2568)),o=r(1074);t.itf8Size=function(e){return -128&e?-16384&e?-2097152&e?-268435456&e?5:4:3:2:1},t.parseItf8=function(e,t){let r=t;const n=e[r];let i;if(n<128?(i=n,r+=1):n<192?(i=16383&(n<<8|e[r+1]),r+=2):n<224?(i=2097151&(n<<16|e[r+1]<<8|e[r+2]),r+=3):n<240?(i=268435455&(n<<24|e[r+1]<<16|e[r+2]<<8|e[r+3]),r+=4):(i=(15&n)<<28|e[r+1]<<20|e[r+2]<<12|e[r+3]<<4|15&e[r+4],r+=5),r>e.length)throw new o.CramBufferOverrunError("Attempted to read beyond end of buffer; this file seems truncated.");return [i,r-t]},t.parseItem=function(e,t,r=0,n=0){const{offset:i,result:o}=t.parse(e);return Object.assign(Object.assign({},o),{_endPosition:i+n,_size:i-r})},t.tinyMemoize=function(e,t){const r=e.prototype[t],n=`_memo_${t}`;e.prototype[t]=function(){if(!(n in this)){const e=r.call(this);this[n]=e,Promise.resolve(e).catch((()=>{delete this[n];}));}return this[n]};},t.sequenceMD5=function(e){return (0, i.default)(e.toUpperCase().replace(/[^\x21-\x7e]/g,""))};},8577:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.CramArgumentError=t.CramSizeLimitError=t.CramMalformedError=t.CramUnimplementedError=t.CramError=void 0;class r extends Error{}t.CramError=r;class n extends Error{}t.CramUnimplementedError=n,t.CramMalformedError=class extends r{},t.CramSizeLimitError=class extends r{},t.CramArgumentError=class extends r{};},5590:function(e,t,r){var n=this&&this.__createBinding||(Object.create?function(e,t,r,n){void 0===n&&(n=r);var i=Object.getOwnPropertyDescriptor(t,r);i&&!("get"in i?!t.__esModule:i.writable||i.configurable)||(i={enumerable:!0,get:function(){return t[r]}}),Object.defineProperty(e,n,i);}:function(e,t,r,n){void 0===n&&(n=r),e[n]=t[r];}),i=this&&this.__setModuleDefault||(Object.create?function(e,t){Object.defineProperty(e,"default",{enumerable:!0,value:t});}:function(e,t){e.default=t;}),o=this&&this.__importStar||function(e){if(e&&e.__esModule)return e;var t={};if(null!=e)for(var r in e)"default"!==r&&Object.prototype.hasOwnProperty.call(e,r)&&n(t,e,r);return i(t,e),t},s=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.CramRecord=t.CraiIndex=t.IndexedCramFile=t.CramFile=void 0;const a=o(r(8222));t.CramFile=a.default,Object.defineProperty(t,"CramRecord",{enumerable:!0,get:function(){return a.CramRecord}});const f=s(r(946));t.IndexedCramFile=f.default;const h=s(r(368));t.CraiIndex=h.default;},946:function(e,t,r){var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e));}catch(e){o(e);}}function a(e){try{f(n.throw(e));}catch(e){o(e);}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t);}))).then(s,a);}f((n=n.apply(e,t||[])).next());}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const o=r(8577),s=i(r(8222));t.default=class{constructor(e){if(e.cram?this.cram=e.cram:this.cram=new s.default({url:e.cramUrl,path:e.cramPath,filehandle:e.cramFilehandle,seqFetch:e.seqFetch,checkSequenceMD5:e.checkSequenceMD5,cacheSize:e.cacheSize}),!(this.cram instanceof s.default))throw new Error("invalid arguments: no cramfile");if(this.index=e.index,!this.index.getEntriesForRange)throw new Error("invalid arguments: not an index");this.fetchSizeLimit=e.fetchSizeLimit||3e6;}getRecordsForRange(e,t,r,i={}){return n(this,void 0,void 0,(function*(){if(i.viewAsPairs=i.viewAsPairs||!1,i.pairAcrossChr=i.pairAcrossChr||!1,i.maxInsertSize=i.maxInsertSize||2e5,"string"==typeof e)throw new o.CramUnimplementedError("string sequence names not yet supported");const n=e,s=yield this.index.getEntriesForRange(n,t,r),a=s.map((e=>e.sliceBytes)).reduce(((e,t)=>e+t),0);if(a>this.fetchSizeLimit)throw new o.CramSizeLimitError(`data size of ${a.toLocaleString()} bytes exceeded fetch size limit of ${this.fetchSizeLimit.toLocaleString()} bytes`);const f=n=>n.sequenceId===e&&n.alignmentStart<=r&&void 0!==n.lengthOnRef&&n.alignmentStart+n.lengthOnRef-1>=t,h=yield Promise.all(s.map((e=>this.getRecordsInSlice(e,f))));let l=Array.prototype.concat(...h);if(i.viewAsPairs){const e={},t={};for(let r=0;r<l.length;r+=1){const n=l[r].readName;if(void 0===n)throw new Error;const i=l[r].uniqueId;e[n]||(e[n]=0),e[n]+=1,t[i]=1;}const r={};Object.entries(e).forEach((([e,t])=>{1===t&&(r[e]=!0);}));const o=[];for(let e=0;e<l.length;e+=1){const t=l[e],s=t.readName;if(void 0===s)throw new Error;if(r[s]&&t.mate&&(t.mate.sequenceId===n||i.pairAcrossChr)&&Math.abs(t.alignmentStart-t.mate.alignmentStart)<i.maxInsertSize){const e=this.index.getEntriesForRange(t.mate.sequenceId,t.mate.alignmentStart,t.mate.alignmentStart+1);o.push(e);}}const s=yield Promise.all(o);let a=[];for(let e=0;e<s.length;e+=1)a.push(...s[e]);a=a.sort(((e,t)=>e.toString().localeCompare(t.toString()))).filter(((e,t,r)=>!t||e.toString()!==r[t-1].toString()));const h=[],u=a.map((e=>e.sliceBytes)).reduce(((e,t)=>e+t),0);if(u>this.fetchSizeLimit)throw new Error(`mate data size of ${u.toLocaleString()} bytes exceeded fetch size limit of ${this.fetchSizeLimit.toLocaleString()} bytes`);a.forEach((e=>{let n=this.cram.featureCache.get(e.toString());n||(n=this.getRecordsInSlice(e,(()=>!0)),this.cram.featureCache.set(e.toString(),n));const i=n.then((e=>{const n=[];for(let i=0;i<e.length;i+=1){const o=e[i];if(void 0===o.readName)throw new Error;r[o.readName]&&!t[o.uniqueId]&&n.push(o);}return n}));h.push(i);}));const c=yield Promise.all(h);if(c.length){const e=c.reduce(((e,t)=>e.concat(t)));l=l.concat(e);}}return l}))}getRecordsInSlice({containerStart:e,sliceStart:t,sliceBytes:r},n){return this.cram.getContainerAtPosition(e).getSlice(t,r).getRecords(n)}hasDataForReferenceSequence(e){return this.index.hasDataForReferenceSequence(e)}};},3427:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.open=t.fromUrl=t.RemoteFile=t.LocalFile=void 0;const i=n(r(8575)),o=r(4319),s=r(2949);function a(e){const{protocol:t,pathname:r}=i.default.parse(e);return "file:"===t?new s.LocalFile(unescape((0, o.ensureNotNullish)(r))):new s.RemoteFile(e)}Object.defineProperty(t,"LocalFile",{enumerable:!0,get:function(){return s.LocalFile}}),Object.defineProperty(t,"RemoteFile",{enumerable:!0,get:function(){return s.RemoteFile}}),t.fromUrl=a,t.open=function(e,t,r){if(r)return r;if(e)return a(e);if(t)return new s.LocalFile(t);throw new Error("no url, path, or filehandle provided, cannot open")};},5702:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.RANS_BYTE_L=t.TOTFREQ=t.TF_SHIFT=void 0,t.TF_SHIFT=12,t.TOTFREQ=4096,t.RANS_BYTE_L=1<<23;},6484:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const i=r(8577),o=r(5702),s=n(r(7634));t.default=function(e,t,r,n){let a=e.getInt(),f=e.getInt(),h=e.getInt(),l=e.getInt();const u=n.remaining(),c=-4&u;for(let i=0;i<c;i+=4){const u=t.R[s.default.get(a,o.TF_SHIFT)],c=t.R[s.default.get(f,o.TF_SHIFT)],d=t.R[s.default.get(h,o.TF_SHIFT)],p=t.R[s.default.get(l,o.TF_SHIFT)];n.putAt(i,u),n.putAt(i+1,c),n.putAt(i+2,d),n.putAt(i+3,p),a=s.default.advanceSymbolStep(a,r[255&u],o.TF_SHIFT),f=s.default.advanceSymbolStep(f,r[255&c],o.TF_SHIFT),h=s.default.advanceSymbolStep(h,r[255&d],o.TF_SHIFT),l=s.default.advanceSymbolStep(l,r[255&p],o.TF_SHIFT),a=s.default.renormalize(a,e),f=s.default.renormalize(f,e),h=s.default.renormalize(h,e),l=s.default.renormalize(l,e);}let d;switch(n.setPosition(c),3&u){case 0:break;case 1:d=t.R[s.default.get(a,o.TF_SHIFT)],s.default.advanceSymbol(a,e,r[255&d],o.TF_SHIFT),n.put(d);break;case 2:d=t.R[s.default.get(a,o.TF_SHIFT)],s.default.advanceSymbol(a,e,r[255&d],o.TF_SHIFT),n.put(d),d=t.R[s.default.get(f,o.TF_SHIFT)],s.default.advanceSymbol(f,e,r[255&d],o.TF_SHIFT),n.put(d);break;case 3:d=t.R[s.default.get(a,o.TF_SHIFT)],s.default.advanceSymbol(a,e,r[255&d],o.TF_SHIFT),n.put(d),d=t.R[s.default.get(f,o.TF_SHIFT)],s.default.advanceSymbol(f,e,r[255&d],o.TF_SHIFT),n.put(d),d=t.R[s.default.get(h,o.TF_SHIFT)],s.default.advanceSymbol(h,e,r[255&d],o.TF_SHIFT),n.put(d);break;default:throw new i.CramMalformedError("invalid output size encountered during rANS decoding")}n.setPosition(0);};},7121:function(e,t,r){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const i=r(5702),o=n(r(7634));t.default=function(e,t,r,n){const s=t.remaining();let a=e.getInt(),f=e.getInt(),h=e.getInt(),l=e.getInt();const u=s>>2;let c=0,d=u,p=2*u,g=3*u,m=0,y=0,b=0,v=0;for(;c<u;c+=1,d+=1,p+=1,g+=1){const 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offset);",t,this.options.encoding,r)),this.options.stripNull&&e.pushCode("{0} = {0}.replace(/\\x00+$/g, '')",t);},d.prototype.generateBuffer=function(e){"eof"===this.options.readUntil?e.pushCode("{0} = buffer.slice(offset);",e.generateVariable(this.varName)):(e.pushCode("{0} = buffer.slice(offset, offset + {1});",e.generateVariable(this.varName),e.generateOption(this.options.length)),e.pushCode("offset += {0};",e.generateOption(this.options.length))),this.options.clone&&e.pushCode("{0} = Buffer.from({0});",e.generateVariable(this.varName));},d.prototype.generateArray=function(e){var t=e.generateOption(this.options.length),r=e.generateOption(this.options.lengthInBytes),n=this.options.type,i=e.generateTmpVariable(),o=e.generateVariable(this.varName),s=e.generateTmpVariable(),a=this.options.key,u="string"==typeof a;if(u?e.pushCode("{0} = {};",o):e.pushCode("{0} = [];",o),"function"==typeof this.options.readUntil?e.pushCode("do {"):"eof"===this.options.readUntil?e.pushCode("for (var {0} = 0; offset < buffer.length; {0}++) {",i):void 0!==r?e.pushCode("for (var {0} = offset; offset - {0} < {1}; ) {",i,r):e.pushCode("for (var {0} = 0; {0} < {1}; {0}++) {",i,t),"string"==typeof n)if(h[n]){var p=e.generateTmpVariable();e.pushCode("var {0} = {1}(offset);",p,l+n),e.pushCode("var {0} = {1}.result; offset = {1}.offset;",s,p),n!==this.alias&&e.addReference(n);}else e.pushCode("var {0} = buffer.read{1}(offset);",s,c[n]),e.pushCode("offset += {0};",f[c[n]]);else n instanceof d&&(e.pushCode("var {0} = {};",s),e.pushScope(s),n.generate(e),e.popScope());u?e.pushCode("{0}[{2}.{1}] = {2};",o,a,s):e.pushCode("{0}.push({1});",o,s),e.pushCode("}"),"function"==typeof this.options.readUntil&&e.pushCode(" while (!({0}).call(this, {1}, buffer.slice(offset)));",this.options.readUntil,s);},d.prototype.generateChoiceCase=function(e,t,r){if("string"==typeof r)if(h[r]){var n=e.generateTmpVariable();e.pushCode("var {0} = {1}(offset);",n,l+r),e.pushCode("{0} = {1}.result; offset = {1}.offset;",e.generateVariable(this.varName),n),r!==this.alias&&e.addReference(r);}else e.pushCode("{0} = buffer.read{1}(offset);",e.generateVariable(this.varName),c[r]),e.pushCode("offset += {0};",f[c[r]]);else r instanceof d&&(e.pushPath(t),r.generate(e),e.popPath(t));},d.prototype.generateChoice=function(e){var t=e.generateOption(this.options.tag);this.varName&&e.pushCode("{0} = {};",e.generateVariable(this.varName)),e.pushCode("switch({0}) {",t),Object.keys(this.options.choices).forEach((function(t){var r=this.options.choices[t];Number.isNaN(parseInt(t,10))?e.pushCode("case '{0}':",t):e.pushCode("case {0}:",t),this.generateChoiceCase(e,this.varName,r),e.pushCode("break;");}),this),e.pushCode("default:"),this.options.defaultChoice?this.generateChoiceCase(e,this.varName,this.options.defaultChoice):e.generateError('"Met undefined tag value " + {0} + " at choice"',t),e.pushCode("}");},d.prototype.generateNest=function(e){var t=e.generateVariable(this.varName);if(this.options.type instanceof d)this.varName&&e.pushCode("{0} = {};",t),e.pushPath(this.varName),this.options.type.generate(e),e.popPath(this.varName);else if(h[this.options.type]){var r=e.generateTmpVariable();e.pushCode("var {0} = {1}(offset);",r,l+this.options.type),e.pushCode("{0} = {1}.result; offset = {1}.offset;",t,r),this.options.type!==this.alias&&e.addReference(this.options.type);}},d.prototype.generateFormatter=function(e,t,r){"function"==typeof r&&e.pushCode("{0} = ({1}).call(this, {0});",t,r);},d.prototype.isInteger=function(){return !!this.type.match(/U?Int[8|16|32][BE|LE]?|Bit\d+/)},d.prototype.itf8=function(e,t){return this.setNextParser("itf8",e,t)},d.prototype.itf8=function(e,t){return this.setNextParser("itf8",e,t)},d.prototype.generateItf8=function(e){var t=e.generateVariable(this.varName),r=e.generateTmpVariable();e.pushCode("\n    var ".concat(r," = buffer[offset];\n    if (").concat(r," < 0x80) {\n      ").concat(t," = ").concat(r,";\n      offset += 1;\n    } else if (").concat(r," < 0xc0) {\n      ").concat(t," = ((").concat(r,"<<8) | buffer[offset+1]) & 0x3fff;\n      offset += 2;\n    } else if (").concat(r," < 0xe0) {\n      ").concat(t," = ((").concat(r,"<<16) | (buffer[offset+1]<< 8) |  buffer[offset+2]) & 0x1fffff;\n      offset += 3;\n    } else if (").concat(r," < 0xf0) {\n      ").concat(t," = ((").concat(r,"<<24) | (buffer[offset+1]<<16) | (buffer[offset+2]<<8) | buffer[offset+3]) & 0x0fffffff;\n      offset += 4\n    } else {\n      ").concat(t," = ((").concat(r," & 0x0f)<<28) | (buffer[offset+1]<<20) | (buffer[offset+2]<<12) | (buffer[offset+3]<<4) | (buffer[offset+4] & 0x0f);\n      // x=((0xff & 0x0f)<<28) | (0xff<<20) | (0xff<<12) | (0xff<<4) | (0x0f & 0x0f);\n      // TODO *val_p = uv < 0x80000000UL ? uv : -((int32_t) (0xffffffffUL - uv)) - 1;\n      offset += 5\n    }\n  "));},d.prototype.ltf8=function(e,t){return this.setNextParser("ltf8",e,t)},d.prototype.generateLtf8=function(e){var t=e.generateVariable(this.varName),r=e.generateTmpVariable();e.pushCode("\n  var ".concat(r," = buffer[offset];\n  if (").concat(r," < 0x80) {\n    ").concat(t," = ").concat(r,";\n    offset += 1;\n  } else if (").concat(r," < 0xc0) {\n    ").concat(t," = ((buffer[offset]<<8) | buffer[offset+1]) & 0x3fff;\n    offset += 2;\n  } else if (").concat(r," < 0xe0) {\n    ").concat(t," = ((buffer[offset]<<16) | (buffer[offset+1]<<8) | buffer[offset+2]) & 0x1fffff;\n    ").concat(t," = (((").concat(r," & 63) << 16) | buffer.readUInt16LE(offset + 1));\n    offset += 3;\n  } else if (").concat(r," < 0xf0) {\n    ").concat(t," = ((buffer[offset]<<24) | (buffer[offset+1]<<16) | (buffer[offset+2]<<8) | buffer[offset+3]) & 0x0fffffff;\n    offset += 4;\n  } else if (").concat(r," < 0xf8) {\n    ").concat(t," = (((buffer[offset] & 15) * Math.pow(2,32))) +\n      (buffer[offset+1]<<24) | (buffer[offset+2]<<16 | buffer[offset+3]<<8 | buffer[offset+4])\n    // TODO *val_p = uv < 0x80000000UL ? uv : -((int32_t) (0xffffffffUL - uv)) - 1;\n    offset += 5;\n  } else if (").concat(r," < 0xfc) {\n    ").concat(t," = ((((buffer[offset] & 7) << 8) | buffer[offset+1] )) * Math.pow(2,32) +\n      (buffer[offset+2]<<24) | (buffer[offset+3]<<16 | buffer[offset+4]<<8 | buffer[offset+5])\n    offset += 6;\n  } else if (").concat(r," < 0xfe) {\n    ").concat(t," = ((((buffer[offset] & 3) << 16) | buffer[offset+1]<<8 | buffer[offset+2])) * Math.pow(2,32) +\n      (buffer[offset+3]<<24) | (buffer[offset+4]<<16 | buffer[offset+5]<<8 | buffer[offset+6])\n    offset += 7;\n  } else if (").concat(r," < 0xff) {\n    ").concat(t," = Long.fromBytesBE(buffer.slice(offset+1,offset+8));\n    if (").concat(t,".greaterThan(Number.MAX_SAFE_INTEGER) || ").concat(t,".lessThan(Number.MIN_SAFE_INTEGER))\n      throw new Error('integer overflow')\n    ").concat(t," = ").concat(t,".toNumber()\n    offset += 8;\n  } else {\n    ").concat(t," = Long.fromBytesBE(buffer.slice(offset+1,offset+9));\n    if (").concat(t,".greaterThan(Number.MAX_SAFE_INTEGER) || ").concat(t,".lessThan(Number.MIN_SAFE_INTEGER))\n      throw new Error('integer overflow')\n    ").concat(t," = ").concat(t,".toNumber()\n    offset += 9;\n  }\n  "));},t.Parser=d;},2961:(e,t)=>{function r(e){return r="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e},r(e)}var n=function(){this.code="",this.scopes=[["vars"]],this.isAsync=!1,this.bitFields=[],this.tmpVariableCount=0,this.references={};};n.prototype.generateVariable=function(e){var t=[];for(Array.prototype.push.apply(t,this.scopes[this.scopes.length-1]);/^\$parent\./.test(e);)t.pop(),e=e.replace(/^\$parent\./,"");return e&&t.push(e),t.join(".")},n.prototype.generateOption=function(e){switch(r(e)){case"number":return e.toString();case"string":return this.generateVariable(e);case"function":return "(".concat(e,").call(").concat(this.generateVariable(),", vars)");default:return}},n.prototype.generateError=function(){var e=Array.prototype.slice.call(arguments),t=n.interpolate.apply(this,e);this.isAsync?this.pushCode("return process.nextTick(function() { callback(new Error(".concat(t,"), vars); });")):this.pushCode("throw new Error(".concat(t,");"));},n.prototype.generateTmpVariable=function(){return "$tmp".concat(this.tmpVariableCount++)},n.prototype.pushCode=function(){var e=Array.prototype.slice.call(arguments);this.code+="".concat(n.interpolate.apply(this,e),"\n");},n.prototype.pushPath=function(e){e&&this.scopes[this.scopes.length-1].push(e);},n.prototype.popPath=function(e){e&&this.scopes[this.scopes.length-1].pop();},n.prototype.pushScope=function(e){this.scopes.push([e]);},n.prototype.popScope=function(){this.scopes.pop();},n.prototype.addReference=function(e){this.references[e]||(this.references[e]={resolved:!1,requested:!1});},n.prototype.markResolved=function(e){this.references[e].resolved=!0;},n.prototype.markRequested=function(e){e.forEach(function(e){this.references[e].requested=!0;}.bind(this));},n.prototype.getUnresolvedReferences=function(){var e=this.references;return Object.keys(this.references).filter((function(t){return !e[t].resolved&&!e[t].requested}))},n.interpolate=function(e){var t=/{\d+}/g,r=e.match(t),n=Array.prototype.slice.call(arguments,1);return r&&r.forEach((function(t){var r=parseInt(t.substr(1,t.length-2),10);e=e.replace(t,n[r].toString());})),e},t._=n;},22:e=>{e.exports.runInThisContext=function(e){return new Function("code","return eval(code);").call(globalThis,e)};},445:(e,t,r)=>{const n=r(7381),i=r(9260),o=r(576),s=r(4693),a=128;e.exports=class{decode(e){return this.stream=new i(e),this.decodeStream(this.stream)}decodeStream(e,t=0){var r=this.stream.ReadByte();16&r||(t=this.stream.ReadUint7());var n,i=t,o=1&r;if(8&r)return this.decodeStripe(this.stream,t);if(r&a&&([n,i]=this.decodePackMeta(this.stream)),32&r)var s=this.decodeCat(this.stream,i);else s=4&r?this.decodeExt(this.stream,i):64&r?o?this.decodeRLE1(this.stream,i):this.decodeRLE0(this.stream,i):o?this.decode1(this.stream,i):this.decode0(this.stream,i);return r&a&&(s=this.decodePack(s,n,t)),s}encode(e,t){if(this.stream=new i("",0,1.1*e.length+100),this.stream.WriteByte(t),16&t||this.stream.WriteUint7(e.length),8&t)return Buffer.concat([this.stream.buf.slice(0,this.stream.pos),this.encodeStripe(this.stream,e,t>>8)]);var r,n=1&t,o=e.length;return t&a&&([r,e,o]=this.encodePack(e)),t&a&&this.stream.WriteStream(r),64&t?n?this.encodeRLE1(e,o,this.stream):this.encodeRLE0(e,o,this.stream):n?this.encode1(e,o,this.stream):this.encode0(e,o,this.stream)}decode0(e,t){var r=new Buffer.allocUnsafe(t),i=e.ReadByte();0==i&&(i=256);var s=new o(i),a=new n(e);a.RangeStartDecode(e);for(var f=0;f<t;f++)r[f]=s.ModelDecode(e,a);return r}encode0(e,t,r){for(var i=0,s=0;s<t;s++)i<e[s]&&(i=e[s]);i++;var a=new o(i);r.WriteByte(i);var f=new n(r);for(s=0;s<t;s++)a.ModelEncode(r,f,e[s]);return f.RangeFinishEncode(r),r.buf.slice(0,r.pos)}decode1(e,t){var r=new Buffer.allocUnsafe(t),i=e.ReadByte();0==i&&(i=256);for(var s=new Array(i),a=0;a<i;a++)s[a]=new o(i);var f=new n(e);f.RangeStartDecode(e);var h=0;for(a=0;a<t;a++)r[a]=s[h].ModelDecode(e,f),h=r[a];return r}encode1(e,t,r){for(var i=0,s=0;s<t;s++)i<e[s]&&(i=e[s]);i++;var a=new Array(i);for(s=0;s<i;s++)a[s]=new o(i);r.WriteByte(i);var f=new n(r),h=0;for(s=0;s<t;s++)a[h].ModelEncode(r,f,e[s]),h=e[s];return f.RangeFinishEncode(r),r.buf.slice(0,r.pos)}decodeExt(e,t){var r=new Buffer.allocUnsafe(t),n=s.array(e.buf.slice(e.pos)),i=s.header(n),o=0;do{var a=s.decompress(n,i);-1!=a&&(Buffer.from(a).copy(r,o),o+=a.length,i-=a.length);}while(-1!=a);return r}encodeExt(e,t){}decodeRLE0(e,t){var r=new Buffer.allocUnsafe(t),i=e.ReadByte();0==i&&(i=256);for(var s=new o(i),a=new Array(258),f=0;f<=257;f++)a[f]=new o(4);var h=new n(e);for(h.RangeStartDecode(e),f=0;f<t;){r[f]=s.ModelDecode(e,h);for(var l=a[r[f]].ModelDecode(e,h),u=l,c=256;3==l;)l=a[c].ModelDecode(e,h),c=257,u+=l;for(var d=1;d<=u;d++)r[f+d]=r[f];f+=u+1;}return r}encodeRLE0(e,t,r){for(var i=0,s=0;s<t;s++)i<e[s]&&(i=e[s]);i++;var a=new o(i),f=new Array(258);for(s=0;s<=257;s++)f[s]=new o(4);r.WriteByte(i);var h=new n(r);for(s=0;s<t;){a.ModelEncode(r,h,e[s]);for(var l=1;s+l<t&&e[s+l]==e[s];)l++;l--;var u=e[s];e[s],s+=l+1;var c=l>=3?3:l;for(f[u].ModelEncode(r,h,c),l-=c,u=256;3==c;)c=l>=3?3:l,f[u].ModelEncode(r,h,c),u=257,l-=c;}return h.RangeFinishEncode(r),r.buf.slice(0,r.pos)}decodeRLE1(e,t){var r=new Buffer.allocUnsafe(t),i=e.ReadByte();0==i&&(i=256);for(var s=new Array(i),a=0;a<i;a++)s[a]=new o(i);var f=new Array(258);for(a=0;a<=257;a++)f[a]=new o(4);var h=new n(e);h.RangeStartDecode(e);var l=0;for(a=0;a<t;){r[a]=s[l].ModelDecode(e,h),l=r[a];for(var u=f[r[a]].ModelDecode(e,h),c=u,d=256;3==u;)u=f[d].ModelDecode(e,h),d=257,c+=u;for(var p=1;p<=c;p++)r[a+p]=r[a];a+=c+1;}return r}encodeRLE1(e,t,r){for(var i=0,s=0;s<t;s++)i<e[s]&&(i=e[s]);i++;var a=new Array(i);for(s=0;s<i;s++)a[s]=new o(i);var f=new Array(258);for(s=0;s<=257;s++)f[s]=new o(4);r.WriteByte(i);for(var h=new n(r),l=(s=0,0);s<t;){a[l].ModelEncode(r,h,e[s]);for(var u=1;s+u<t&&e[s+u]==e[s];)u++;u--;var c=e[s];l=e[s],s+=u+1;var d=u>=3?3:u;for(f[c].ModelEncode(r,h,d),u-=d,c=256;3==d;)d=u>=3?3:u,f[c].ModelEncode(r,h,d),c=257,u-=d;}return h.RangeFinishEncode(r),r.buf.slice(0,r.pos)}decodePackMeta(e){this.nsym=e.ReadByte();for(var t=new Array(this.nsym),r=0;r<this.nsym;r++)t[r]=e.ReadByte();return [t,e.ReadUint7()]}decodePack(e,t,r){var n=new Buffer.allocUnsafe(r);if(this.nsym<=1)for(var i=0;i<r;i++)n[i]=t[0];else if(this.nsym<=2){i=0;for(var o=0;i<r;i++){if(i%8==0)var s=e[o++];n[i]=t[1&s],s>>=1;}}else if(this.nsym<=4)for(i=0,o=0;i<r;i++)i%4==0&&(s=e[o++]),n[i]=t[3&s],s>>=2;else {if(!(this.nsym<=16))return e;for(i=0,o=0;i<r;i++)i%2==0&&(s=e[o++]),n[i]=t[15&s],s>>=4;}return n}packMeta(e){for(var t=new i("",0,1024),r=new Array(256),n=0;n<e.length;n++)r[e[n]]=1;var o=0;for(n=0;n<256;n++)r[n]&&(r[n]=++o);for(t.WriteByte(o),n=0;n<256;n++)r[n]&&(t.WriteByte(n),r[n]--);return [t,r,o]}encodePack(e){var t,r,n;[t,r,n]=this.packMeta(e);var i=e.length,o=0;if(n<=1)return t.WriteUint7(0),[t,new Buffer.allocUnsafe(0),0];if(n<=2){for(var s=new Buffer.allocUnsafe(Math.floor((i+7)/8)),a=(o=0,0);o<(-8&i);o+=8,a++)s[a]=(r[e[o+0]]<<0)+(r[e[o+1]]<<1)+(r[e[o+2]]<<2)+(r[e[o+3]]<<3)+(r[e[o+4]]<<4)+(r[e[o+5]]<<5)+(r[e[o+6]]<<6)+(r[e[o+7]]<<7);if(o<i){s[a]=0;for(var f=0;o<i;)s[a]|=r[e[o++]]<<f,f++;a++;}return t.WriteUint7(a),[t,s,s.length]}if(n<=4){for(s=new Buffer.allocUnsafe(Math.floor((i+3)/4)),o=0,a=0;o<(-4&i);o+=4,a++)s[a]=(r[e[o+0]]<<0)+(r[e[o+1]]<<2)+(r[e[o+2]]<<4)+(r[e[o+3]]<<6);if(o<i){for(s[a]=0,f=0;o<i;)s[a]|=r[e[o++]]<<f,f+=2;a++;}return t.WriteUint7(a),[t,s,s.length]}if(n<=16){for(s=new Buffer.allocUnsafe(Math.floor((i+1)/2)),o=0,a=0;o<(-2&i);o+=2,a++)s[a]=(r[e[o+0]]<<0)+(r[e[o+1]]<<4);return o<i&&(s[a++]=r[e[o++]]),t.WriteUint7(a),[t,s,s.length]}return t.WriteUint7(e.length),[t,e,e.length]}encodeStripe(e,t,r){0==r&&(r=4);for(var n=new Array(r),o=new Array(r),s=0;s<r;s++)o[s]=Math.floor(t.length/r)+(t.length%r>s),n[s]=new Array(o[s]);for(var a=0,f=0;f<t.length;f+=r,a++)for(var h=0;h<r;h++)a<n[h].length&&(n[h][a]=t[f+h]);var l=new Array(r),u=0;for(s=0;s<r;s++){var c=this.encode(n[s],0),d=this.encode(n[s],1);l[s]=d.length<c.length?d:c,u+=l[s].length;}var p=new i("",0,u+5*r+1);for(p.WriteByte(r),s=0;s<r;s++)p.WriteUint7(l[s].length);for(s=0;s<r;s++)p.WriteData(l[s],l[s].length);return p.buf.slice(0,p.buf.pos)}decodeStripe(e,t){for(var r=e.ReadByte(),n=new Array(r),i=new Array(r),o=0;o<r;o++)n[o]=e.ReadUint7();var s=new Array(r);for(o=0;o<r;o++)i[o]=Math.floor(t/r)+(t%r>o),s[o]=this.decodeStream(e,i[o]);var a=new Buffer.allocUnsafe(t);for(o=0;o<r;o++)for(var f=0;f<i[o];f++)a[f*r+o]=s[o][f];return a}decodeCat(e,t){for(var r=new Buffer.allocUnsafe(t),n=0;n<t;n++)r[n]=e.ReadByte();return r}};},7381:e=>{e.exports=class{constructor(e){this.low=0,this.range=4294967295,this.code=0,this.FFnum=0,this.carry=0,this.cache=0;}RangeStartDecode(e){for(var t=0;t<5;t++)this.code=(this.code<<8)+e.ReadByte();this.code&=4294967295,this.code>>>=0;}RangeGetFrequency(e){return this.range=Math.floor(this.range/e),Math.floor(this.code/this.range)}RangeDecode(e,t,r,n){for(this.code-=t*this.range,this.range*=r;this.range<1<<24;)this.range*=256,this.code=256*this.code+e.ReadByte();}RangeShiftLow(e){if(this.low<4278190080|this.carry){for(e.WriteByte(this.cache+this.carry);this.FFnum;)e.WriteByte(this.carry-1),this.FFnum--;this.cache=this.low>>>24,this.carry=0;}else this.FFnum++;this.low<<=8,this.low>>>=0;}RangeEncode(e,t,r,n){var i=this.low;for(this.range=Math.floor(this.range/n),this.low+=t*this.range,this.low>>>=0,this.range*=r,this.low<i&&(0!=this.carry&&console.log("ERROR: Multiple carry"),this.carry=1);this.range<1<<24;)this.range*=256,this.RangeShiftLow(e);}RangeFinishEncode(e){for(var t=0;t<5;t++)this.RangeShiftLow(e);}};},576:e=>{e.exports=class{constructor(e=256){this.total_freq=e,this.max_sym=e-1,this.S=new Array,this.F=new Array;for(var t=0;t<=this.max_sym;t++)this.S[t]=t,this.F[t]=1;}ModelDecode(e,t){for(var r=t.RangeGetFrequency(this.total_freq),n=0,i=0;n+this.F[i]<=r;)n+=this.F[i++];t.RangeDecode(e,n,this.F[i],this.total_freq),this.F[i]+=16,this.total_freq+=16,this.total_freq>65519&&this.ModelRenormalise();var o=this.S[i];if(i>0&&this.F[i]>this.F[i-1]){var s=this.F[i];this.F[i]=this.F[i-1],this.F[i-1]=s,s=this.S[i],this.S[i]=this.S[i-1],this.S[i-1]=s;}return o}ModelRenormalise(){this.total_freq=0;for(var e=0;e<=this.max_sym;e++)this.F[e]-=Math.floor(this.F[e]/2),this.total_freq+=this.F[e];}ModelEncode(e,t,r){for(var n=0,i=0;this.S[i]!=r;i++)n+=this.F[i];if(t.RangeEncode(e,n,this.F[i],this.total_freq),this.F[i]+=16,this.total_freq+=16,this.total_freq>65519&&this.ModelRenormalise(),r=this.S[i],i>0&&this.F[i]>this.F[i-1]){var o=this.F[i];this.F[i]=this.F[i-1],this.F[i-1]=o,o=this.S[i],this.S[i]=this.S[i-1],this.S[i-1]=o;}}};},5260:(e,t,r)=>{const n=r(9260),i=r(576),o=r(7381);function s(e,t,r){for(var n=0,i=0,o=-1,s=new Array(1024);i<r;){var a=e.ReadByte();if(s[n++]=a,i+=a,a==o){var f=e.ReadByte();for(i+=a*f;f--;)s[n++]=a;}o=a;}var h=0;for(n=0,i=0;i<r;){var l=0;do{var u=s[n++];l+=u;}while(255==u);for(;l--;)t[i++]=h;h++;}}function a(e,t,r){var n=e.context;return t.qctx=(t.qctx<<e.qshift)+e.qtab[r],n+=(t.qctx&(1<<e.qbits)-1)<<e.qloc,e.do_pos&&(n+=e.ptab[Math.min(t.p,1023)]<<e.ploc),e.do_delta&&(n+=e.dtab[Math.min(t.delta,255)]<<e.dloc,t.delta+=t.prevq!=r?1:0,t.prevq=r),e.do_sel&&(n+=t.s<<e.sloc),t.p--,65535&n}function f(e){var t={};t.context=e.ReadUint16(),t.pflags=e.ReadByte(),t.do_dedup=2&t.pflags,t.fixed_len=4&t.pflags,t.do_sel=8&t.pflags,t.do_qmap=16&t.pflags,t.do_pos=32&t.pflags,t.do_delta=64&t.pflags,t.do_qtab=128&t.pflags,t.max_sym=e.ReadByte();var r=e.ReadByte();if(t.qbits=r>>4,t.qshift=15&r,r=e.ReadByte(),t.qloc=r>>4,t.sloc=15&r,r=e.ReadByte(),t.ploc=r>>4,t.dloc=15&r,t.qmap=new Array(256),16&t.pflags)for(var n=0;n<t.max_sym;n++)t.qmap[n]=e.ReadByte();else for(n=0;n<256;n++)t.qmap[n]=n;if(t.qtab=new Array(1024),t.qbits>0&&128&t.pflags)s(e,t.qtab,256);else for(n=0;n<256;n++)t.qtab[n]=n;return t.ptab=new Array(1024),32&t.pflags&&s(e,t.ptab,1024),t.dtab=new Array(256),64&t.pflags&&s(e,t.dtab,256),t}function h(e,t,r,n,i,o){r.max_sel>0?i.s=n.sel.ModelDecode(e,t):i.s=0,i.x=r.stab[i.s];var s=r.params[i.x];if(s.fixed_len>=0){var a=n.len[0].ModelDecode(e,t);a|=n.len[1].ModelDecode(e,t)<<8,a|=n.len[2].ModelDecode(e,t)<<16,a|=n.len[3].ModelDecode(e,t)<<24,s.fixed_len>0&&(s.fixed_len=-a);}else a=-s.fixed_len;i.len=a,r.do_rev&&(o[i.rec]=n.rev.ModelDecode(e,t)),i.is_dup=0,2&s.pflags&&n.dup.ModelDecode(e,t)&&(i.is_dup=1),i.p=a,i.delta=0,i.qctx=0,i.prevq=0,i.rec++;}function l(e,t,r){for(var n=0,i=0,o=new Array(2*r),s=0;n<r;){for(var a=n;n<r&&t[n]==i;)n++;var f=n-a;do{var h=Math.min(255,f);o[s++]=h,f-=h;}while(255==h);i++;}var l=-1,u=new Array(2*r),c=0;for(n=0;n<s;){var d=o[n++];if(u[c++]=d,d==l){for(a=n;n<s&&o[n]==l&&n-a<255;)n++;u[c++]=n-a;}else l=d;}e.WriteData(u,c);}e.exports={decode:function(e,t){return function(e,t){var r=e.ReadUint7(),n=function(e){var t={max_sym:0};if(5==e.ReadByte()){var r=e.ReadByte(),n=1&r?e.ReadByte():1,i=r.nparam>1?r.nparam-1:0,o=new Array(256);if(2&r)i=e.ReadByte(),s(e,o,256);else {for(var a=0;a<n;a++)o[a]=a;for(;a<256;a++)o[a]=n-1;}t.do_rev=4&r,t.stab=o,t.max_sel=i,t.params=new Array(t.nparam);for(var h=0;h<n;h++)t.params[h]=f(e),t.max_sym<t.params[h].max_sym&&(t.max_sym=t.params[h].max_sym);return t}console.error("Invalid FQZComp version number");}(e);if(n){var l=n.params,u=new Array(t.length),c=function(e){var t={};t.qual=new Array(65536);for(var r=0;r<65536;r++)t.qual[r]=new i(e.max_sym+1);for(t.len=new Array(4),r=0;r<4;r++)t.len[r]=new i(256);return t.rev=new i(2),t.dup=new i(2),e.max_sel>0&&(t.sel=new i(e.max_sel+1)),t}(n),d=new o(e);d.RangeStartDecode(e);for(var p=new Buffer.allocUnsafe(r),g={qctx:0,prevq:0,delta:0,p:0,s:0,x:0,len:0,is_dup:0,rec:0},m=0;m<r;){if(0==g.p){if(h(e,d,n,c,g,u),g.is_dup>0&&c.dup.ModelDecode(e,d)){for(var y=0;y<len;y++)p[m+y]=p[m+y-g.len];m+=g.len,g.p=0;continue}t.push(g.len);var b=(l=n.params[g.x]).context;}var v=c.qual[b].ModelDecode(e,d);p[m++]=l.qmap[v],b=a(l,g,v);}return n.do_rev&&function(e,t,r,n){for(var i=0,o=0;o<t;){if(r[i])for(var s=0,a=n[i]-1;s<a;){var f=e[o+s];e[o+s]=e[o+a],e[o+a]=f,s++,a--;}o+=n[i++];}}(p,r,u,t),p}}(new n(e),t)},encode:function(e,t,r){for(var s=new Array(2),a=new Array(2),f=new Array(2),h=new Array(2),u=new Array(256),c=0;c<2;c++)s[c]=new Array(256),a[c]=new Array(256),f[c]=new Array(1024),h[c]=new Array(256);(p=new n("",0,1.1*e.length+100)).WriteUint7(e.length);var d=function(e,t,r,n){for(var i=r[0],o=0;o<r.length&&r[o]==i;o++);var s=o==r.length?1:0,a=0,f=0;for(o=0;o<256;o++)n[0][o]=0;var h=0,l=0;for(o=0;o<e.length;o++)0==l&&(l=t[h<t.length-1?h++:h]),n[0][e[o]]++,l--;for(o=0;o<256;o++)n[0][o]&&(f<o&&(f=o),a++);var u=5,c=0;return a<=16&&(c=1,u=a<=2?1:a<=4?2:a<=8?3:4),[{qbits:8+(u>4),qshift:u,qloc:7,pbits:7,pshift:t[0]>128?1:0,ploc:0,dbits:u>4?0:1,dshift:3,dloc:15,sbits:0,sloc:15,do_stab:0,context:0,max_sym:f,nsym:a,do_qmap:c,do_dedup:0,fixed_len:1==t.length?1:0,do_sel:0,do_rev:0,do_pos:1,do_delta:u<=4?1:0,do_qtab:0,qbits:8+(u>4)-(0==s),sbits:1,sloc:15-(u<=4),do_stab:1,do_sel:1}]}(e,t,r,s),p=function(e,t,r,n,i,o,s){for(var a=[0,1,1,1,2,2,2,2,2,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7],f=0;f<t.length;f++)s[f]=f;for(;f<256;f++)s[f]=t.length-1;e.WriteByte(5);var h=(t.length>1?1:0)|(t[0].do_stab?2:0);if(e.WriteByte(h),1&h&&e.WriteByte(t.length),2&h){var u=1<<t[0].sbits;u>0&&u--,e.WriteByte(u),l(e,s,256);}for(var c=0;c<t.length;c++){if(e.WriteUint16(t[c].context),e.WriteByte((t[c].do_qtab?128:0)|(t[c].do_delta?64:0)|(t[c].do_pos?32:0)|(t[c].do_qmap?16:0)|(t[c].do_sel?8:0)|(t[c].fixed_len?4:0)|(t[c].do_dedup?2:0)),t[c].do_qmap?e.WriteByte(t[c].nsym):e.WriteByte(t[c].max_sym),e.WriteByte(t[c].qbits<<4|t[c].qshift),e.WriteByte(t[c].qloc<<4|t[c].sloc),e.WriteByte(t[c].ploc<<4|t[c].dloc),t[c].do_qmap){t[c].max_sym=t[c].nsym;var d=0;for(f=0;f<256;f++)r[c][f]&&(e.WriteByte(f),r[c][f]=d++);for(;d<t[c].nsym;d++)e.WriteByte(0);}else for(f=0;f<256;f++)r[c][f]=f;if(t[c].qbits>0){for(f=0;f<256;f++)n[c][f]=f;t[c].do_qtab&&l(e,n[c],256);}if(t[c].pbits>0){for(f=0;f<1024;f++)i[c][f]=Math.min((1<<t[c].pbits)-1,f>>t[c].pshift);l(e,i[c],1024);}if(t[c].dbits>0){for(f=0;f<256;f++)a[f]>(1<<t[c].dbits)-1&&(a[f]=(1<<t[c].dbits)-1);for(f=0;f<256;f++)o[c][f]=a[Math.min(a.length-1,f>>t[c].dshift)];l(e,o[c],256);}}return e}(p,d,s,a,f,h,u);return function(e,t,r,n,s,a,f,h,l,u){var c=1<<s[0].sbits;c>0&&c--;for(var d=t.length,p=0,g=0;g<s.length;g++)p<s[g].max_sym&&(p=s[g].max_sym);for(var m=new Array(65536),y=0;y<65536;y++)m[y]=new i(p+1);var b=new Array(4);for(y=0;y<4;y++)b[y]=new i(256);new i(2),new i(2);for(var v=new i(c+1),w=new o(t),_=(g=0,y=0,0);y<d;){if(0==g){var B=n[_];s[0].sbits>0&&v.ModelEncode(e,w,B);var E=u[B],S=r[Math.min(r.length-1,_++)];s[E].fixed_len?s[E].fixed_len>0&&(b[0].ModelEncode(e,w,255&S),b[1].ModelEncode(e,w,S>>8&255),b[2].ModelEncode(e,w,S>>16&255),b[3].ModelEncode(e,w,S>>24&255),s[E].fixed_len=-1):(b[0].ModelEncode(e,w,255&S),b[1].ModelEncode(e,w,S>>8&255),b[2].ModelEncode(e,w,S>>16&255),b[3].ModelEncode(e,w,S>>24&255)),s[E].do_dedup&&process.exit(1),g=S;var A=0,C=s[E].context,R=0,k=0;}var x=t[y++],I=a[E][x];m[C].ModelEncode(e,w,I),R=(R<<s[E].qshift)+f[E][I],C=s[E].context,C+=(R&(1<<s[E].qbits)-1)<<s[E].qloc,s[E].pbits>0&&(C+=h[E][Math.min(g,1023)]<<s[E].ploc),s[E].dbits>0&&(C+=l[E][Math.min(A,255)]<<s[E].dloc,A+=k!=I?1:0,k=I),s[E].do_sel&&(C+=B<<s[E].sloc),C&=65535,g--;}return w.RangeFinishEncode(e),e.buf.slice(0,e.pos)}(p,e,t,r,d,s,a,f,h,u)}};},3498:(e,t,r)=>{var n=r(4459),i=r(594),o=r(445),s=r(5260),a=r(2881);e.exports={r4x8_uncompress:function(e,t){n.decode(e).copy(t,0,0);},r4x16_uncompress:function(e,t){i.decode(e).copy(t,0,0);},arith_uncompress:function(e,t){o.decode(e).copy(t,0,0);},fqzcomp_uncompress:function(e,t){var r=new Array;s.decode(e,r).copy(t,0,0);},tok3_uncompress:function(e,t){var r=a.decode(e,0,"\0");Buffer.from(r,"binary").copy(t,0,0);}};},9260:e=>{e.exports=class{constructor(e,t=0,r=0){0!=r?(this.buf=Buffer.allocUnsafe(r),this.length=r):(this.buf=e,this.length=e.length),this.pos=t;}EOF(){return this.pos>=this.length}ReadData(e){var t=this.buf.slice(this.pos,this.pos+e);return this.pos+=e,t}ReadByte(){const e=this.buf[this.pos];return this.pos++,e}ReadChar(){const e=this.buf[this.pos];return this.pos++,String.fromCharCode(e)}ReadUint16(){return this.ReadByte()|this.ReadByte()<<8}ReadUint32(){const e=this.buf.readInt32LE(this.pos);return this.pos+=4,e}ReadString(){var e="";do{var t=this.buf[this.pos++];t&&(e+=String.fromCharCode(t));}while(t);return e}ReadUint7(){var e=0;do{var t=this.ReadByte();e=e<<7|127&t;}while(128&t);return e}ReadITF8(){var e=this.buf[this.pos];return this.pos++,e>=240?(e=(15&e)<<28,e+=(this.buf[this.pos+0]<<20)+(this.buf[this.pos+1]<<12)+(this.buf[this.pos+2]<<4)+(this.buf[this.pos+3]>>4),this.pos+=4):e>=224?(e=(15&e)<<24,e+=(this.buf[this.pos+0]<<16)+(this.buf[this.pos+1]<<8)+(this.buf[this.pos+2]<<0),this.pos+=3):e>=192?(e=(31&e)<<16,e+=(this.buf[this.pos+0]<<8)+(this.buf[this.pos+1]<<0),this.pos+=2):e>=128&&(e=(63&e)<<8,e+=this.buf[this.pos],this.pos++),e}WriteByte(e){this.buf[this.pos++]=e;}WriteChar(e){this.buf[this.pos++]=e.charCodeAt(0);}WriteString(e){for(var t=0;t<e.length;t++)this.buf[this.pos++]=e.charCodeAt(t);this.buf[this.pos++]=0;}WriteData(e,t){for(var r=0;r<t;r++)this.buf[this.pos++]=e[r];}WriteStream(e){this.WriteData(e.buf,e.pos);}WriteUint16(e){this.WriteByte(255&e),this.WriteByte(e>>8&255);}WriteUint32(e){this.buf.writeInt32LE(e,this.pos),this.pos+=4;}WriteUint7(e){var t=0,r=e;do{t+=7,r>>=7;}while(r>0);do{t-=7,this.WriteByte((e>>t&127)+((t>0)<<7));}while(t>0)}WriteITF8(e){e<0&&(e=1+e),e<=127?this.buf[this.pos++]=e:e<=16383?(this.buf[this.pos++]=128|Math.floor(e/256),this.buf[this.pos++]=255&e):e<131071?(this.buf[this.pos++]=192|Math.floor(e/65536),this.buf[this.pos++]=255&Math.floor(e/256),this.buf[this.pos++]=255&e):e<268435455?(this.buf[this.pos++]=224|Math.floor(e/16777216),this.buf[this.pos++]=255&Math.floor(e/65536),this.buf[this.pos++]=255&Math.floor(e/256),this.buf[this.pos++]=255&e):(this.buf[this.pos++]=240|Math.floor(e/268435456),this.buf[this.pos++]=255&Math.floor(e/1048576),this.buf[this.pos++]=255&Math.floor(e/4096),this.buf[this.pos++]=255&Math.floor(e/4),this.buf[this.pos++]=15&e);}WriteByteNeg(e){this.buf[--this.pos]=e;}};},4459:(e,t,r)=>{const n=r(9260);function i(e){return 4095&e}function o(e,t){for(var r=0;t>=e[r+1];)r++;return r}function s(e){for(var t=new Array(4096),r=0,n=0;n<4096;n++){for(;n>=e[r+1];)r++;t[n]=r;}return t}function a(e,t,r){return r*(e>>12)+(4095&e)-t}function f(e,t){for(;t<1<<23;)t=(t<<8)+e.ReadByte();return t}function h(e,t){t.WriteByteNeg(e>>24&255),t.WriteByteNeg(e>>16&255),t.WriteByteNeg(e>>8&255),t.WriteByteNeg(e>>0&255);}function l(e,t,r,n,i){return e=function(e,t,r,n){for(var i=(1<<23>>n<<8)*r;e>=i;)t.WriteByteNeg(255&e),e>>=8;return e}(e,t,n,i),(Math.floor(e/n)<<i)+e%n+r}function u(e,t,r){for(var n=0;n<256;n++)t[n]=0;var i=e.ReadByte(),o=i,s=0;do{var a=e.ReadITF8();t[i]=a,s>0?(s--,i++):(i=e.ReadByte())==o+1&&(s=e.ReadByte()),o=i;}while(0!=i);for(r[0]=0,n=0;n<=255;n++)r[n+1]=r[n]+t[n];}function c(e){for(var t=0,r=0;r<256;r++)t+=e[r];const n=4096;var i=n/t;do{var o=0,s=0,a=0;for(t=0,r=0;r<256;r++)0!=e[r]&&(o<e[r]&&(o=e[r],s=r),e[r]=Math.floor(e[r]*i),0==e[r]&&(e[r]=1),t+=e[r]);t<n?e[s]+=n-t:t-n<e[s]/2&&e[s]>2?e[s]-=t-n:t!=n&&(i*=.99,a=1);}while(a)}function d(e,t){for(var r=0,n=0;n<256;n++)if(t[n]){if(r>0)r--;else if(e.WriteByte(n),n>0&&t[n-1]>0){for(r=n+1;r<256&&t[r];r++);r-=n+1,e.WriteByte(r);}e.WriteITF8(t[n]);}e.WriteByte(0);}e.exports={decode:function(e){var t=new n(e),r=t.ReadByte(),h=(t.ReadUint32(),t.ReadUint32());return 0==r?function(e,t){var r=new Array(256),n=new Array(256);u(e,r,n);for(var o=s(n),h=new Array(4),l=0;l<4;l++)h[l]=e.ReadUint32();var c=new Buffer.allocUnsafe(t);for(l=0;l<t;l++){var d=l%4,p=o[i(h[d])];c[l]=p,h[d]=a(h[d],n[p],r[p]),h[d]=f(e,h[d]);}return c}(t,h):function(e,t){var r=new Array(256),n=new Array(256);!function(e,t,r){for(var n=0;n<256;n++){t[n]=new Array(256),r[n]=new Array(256);for(var i=0;i<256;i++)t[n][i]=0;}var o=e.ReadByte(),s=o,a=0;do{u(e,t[o],r[o]),a>0?(a--,o++):(o=e.ReadByte())==s+1&&(a=e.ReadByte()),s=o;}while(0!=o)}(e,r,n);for(var h=new Array(256),l=0;l<256;l++)h[l]=s(n[l]);for(var c=new Array(4),d=new Array(4),p=0;p<4;p++)c[p]=e.ReadUint32(),d[p]=0;var g=new Buffer.allocUnsafe(t),m=Math.floor(t/4);for(l=0;l<m;l++)for(p=0;p<4;p++){var 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n=0;n<256;n++)if(t[n]){var i=Math.ceil(Math.log2(t[n]));i>12&&(i=12),m(e[n],i);}}(o,i);var u=new n("",0,198156);!function(e,t,r){b(e,r);for(var n=0;n<256;n++)if(r[n])for(var i=0,o=0;o<256;o++)if(r[o])if(i)i--;else if(e.WriteUint7(t[n][o]),!t[n][o]){for(var s=o+1;s<256;s++)if(r[s]){if(0!=t[n][s])break;i++;}e.WriteByte(i);}}(u,o,i);var c=v(u.buf.slice(0,u.pos));for(c.length<u.pos?(r.WriteByte(193),r.WriteUint7(u.pos),r.WriteUint7(c.length),r.WriteData(c,c.length)):(r.WriteByte(192),r.WriteData(u.buf,u.pos)),function(e,t,r){for(var n=0;n<256;n++)t[n]&&y(e[n],12);}(o,i),a=0;a<256;a++)if(i[a]){s[a][0]=0;for(var d=1;d<256;d++)s[a][d]=s[a][d-1]+o[a][d-1];}var p=new Array(4),g=new Array(4);for(d=0;d<4;d++)p[d]=32768,g[d]=0;var w=new n("",1.05*t+100>>0,1.05*t+100>>0),_=Math.floor(t/4),B=new Array(4),E=new Array(4);for(d=0;d<4;d++)B[d]=(d+1)*_-2,E[d]=e[B[d]+1];for(E[3]=e[t-1],a=t-2;a>4*_-2;a--)p[3]=l(p[3],w,s[e[a]][E[3]],o[e[a]][E[3]],f),E[3]=e[a];for(;B[0]>=0;)for(d=3;d>=0;d--){var 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r,n,i,o,s,a,f,h,l,u,c,d,p,g,m,y,b,v,w,_,B,E,S,A,C;r=e.state,n=e.next_in,A=e.input,i=n+(e.avail_in-5),o=e.next_out,C=e.output,s=o-(t-e.avail_out),a=o+(e.avail_out-257),f=r.dmax,h=r.wsize,l=r.whave,u=r.wnext,c=r.window,d=r.hold,p=r.bits,g=r.lencode,m=r.distcode,y=(1<<r.lenbits)-1,b=(1<<r.distbits)-1;e:do{p<15&&(d+=A[n++]<<p,p+=8,d+=A[n++]<<p,p+=8),v=g[d&y];t:for(;;){if(d>>>=w=v>>>24,p-=w,0==(w=v>>>16&255))C[o++]=65535&v;else {if(!(16&w)){if(0==(64&w)){v=g[(65535&v)+(d&(1<<w)-1)];continue t}if(32&w){r.mode=12;break e}e.msg="invalid literal/length code",r.mode=30;break e}_=65535&v,(w&=15)&&(p<w&&(d+=A[n++]<<p,p+=8),_+=d&(1<<w)-1,d>>>=w,p-=w),p<15&&(d+=A[n++]<<p,p+=8,d+=A[n++]<<p,p+=8),v=m[d&b];r:for(;;){if(d>>>=w=v>>>24,p-=w,!(16&(w=v>>>16&255))){if(0==(64&w)){v=m[(65535&v)+(d&(1<<w)-1)];continue r}e.msg="invalid distance code",r.mode=30;break e}if(B=65535&v,p<(w&=15)&&(d+=A[n++]<<p,(p+=8)<w&&(d+=A[n++]<<p,p+=8)),(B+=d&(1<<w)-1)>f){e.msg="invalid distance too far back",r.mode=30;break 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e;S=0;do{O=c[p+S++],r.head&&O&&r.length<65536&&(r.head.name+=String.fromCharCode(O));}while(O&&S<m);if(512&r.flags&&(r.check=o(r.check,c,S,p)),m-=S,p+=S,O)break e}else r.head&&(r.head.name=null);r.length=0,r.mode=8;case 8:if(4096&r.flags){if(0===m)break e;S=0;do{O=c[p+S++],r.head&&O&&r.length<65536&&(r.head.comment+=String.fromCharCode(O));}while(O&&S<m);if(512&r.flags&&(r.check=o(r.check,c,S,p)),m-=S,p+=S,O)break e}else r.head&&(r.head.comment=null);r.mode=9;case 9:if(512&r.flags){for(;v<16;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}if(b!==(65535&r.check)){e.msg="header crc mismatch",r.mode=l;break}b=0,v=0;}r.head&&(r.head.hcrc=r.flags>>9&1,r.head.done=!0),e.adler=r.check=0,r.mode=h;break;case 10:for(;v<32;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}e.adler=r.check=u(b),b=0,v=0,r.mode=11;case 11:if(0===r.havedict)return e.next_out=g,e.avail_out=y,e.next_in=p,e.avail_in=m,r.hold=b,r.bits=v,2;e.adler=r.check=1,r.mode=h;case h:if(5===t||6===t)break e;case 13:if(r.last){b>>>=7&v,v-=7&v,r.mode=27;break}for(;v<3;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}switch(r.last=1&b,v-=1,3&(b>>>=1)){case 0:r.mode=14;break;case 1:if(w(r),r.mode=20,6===t){b>>>=2,v-=2;break e}break;case 2:r.mode=17;break;case 3:e.msg="invalid block type",r.mode=l;}b>>>=2,v-=2;break;case 14:for(b>>>=7&v,v-=7&v;v<32;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}if((65535&b)!=(b>>>16^65535)){e.msg="invalid stored block lengths",r.mode=l;break}if(r.length=65535&b,b=0,v=0,r.mode=15,6===t)break e;case 15:r.mode=16;case 16:if(S=r.length){if(S>m&&(S=m),S>y&&(S=y),0===S)break e;n.arraySet(d,c,p,S,g),m-=S,p+=S,y-=S,g+=S,r.length-=S;break}r.mode=h;break;case 17:for(;v<14;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}if(r.nlen=257+(31&b),b>>>=5,v-=5,r.ndist=1+(31&b),b>>>=5,v-=5,r.ncode=4+(15&b),b>>>=4,v-=4,r.nlen>286||r.ndist>30){e.msg="too many length or distance symbols",r.mode=l;break}r.have=0,r.mode=18;case 18:for(;r.have<r.ncode;){for(;v<3;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}r.lens[z[r.have++]]=7&b,b>>>=3,v-=3;}for(;r.have<19;)r.lens[z[r.have++]]=0;if(r.lencode=r.lendyn,r.lenbits=7,U={bits:r.lenbits},T=a(0,r.lens,0,19,r.lencode,0,r.work,U),r.lenbits=U.bits,T){e.msg="invalid code lengths set",r.mode=l;break}r.have=0,r.mode=19;case 19:for(;r.have<r.nlen+r.ndist;){for(;k=(N=r.lencode[b&(1<<r.lenbits)-1])>>>16&255,x=65535&N,!((R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}if(x<16)b>>>=R,v-=R,r.lens[r.have++]=x;else {if(16===x){for(P=R+2;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}if(b>>>=R,v-=R,0===r.have){e.msg="invalid bit length repeat",r.mode=l;break}O=r.lens[r.have-1],S=3+(3&b),b>>>=2,v-=2;}else if(17===x){for(P=R+3;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}v-=R,O=0,S=3+(7&(b>>>=R)),b>>>=3,v-=3;}else {for(P=R+7;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}v-=R,O=0,S=11+(127&(b>>>=R)),b>>>=7,v-=7;}if(r.have+S>r.nlen+r.ndist){e.msg="invalid bit length repeat",r.mode=l;break}for(;S--;)r.lens[r.have++]=O;}}if(r.mode===l)break;if(0===r.lens[256]){e.msg="invalid code -- missing end-of-block",r.mode=l;break}if(r.lenbits=9,U={bits:r.lenbits},T=a(1,r.lens,0,r.nlen,r.lencode,0,r.work,U),r.lenbits=U.bits,T){e.msg="invalid literal/lengths set",r.mode=l;break}if(r.distbits=6,r.distcode=r.distdyn,U={bits:r.distbits},T=a(2,r.lens,r.nlen,r.ndist,r.distcode,0,r.work,U),r.distbits=U.bits,T){e.msg="invalid distances set",r.mode=l;break}if(r.mode=20,6===t)break e;case 20:r.mode=21;case 21:if(m>=6&&y>=258){e.next_out=g,e.avail_out=y,e.next_in=p,e.avail_in=m,r.hold=b,r.bits=v,s(e,E),g=e.next_out,d=e.output,y=e.avail_out,p=e.next_in,c=e.input,m=e.avail_in,b=r.hold,v=r.bits,r.mode===h&&(r.back=-1);break}for(r.back=0;k=(N=r.lencode[b&(1<<r.lenbits)-1])>>>16&255,x=65535&N,!((R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}if(k&&0==(240&k)){for(I=R,M=k,F=x;k=(N=r.lencode[F+((b&(1<<I+M)-1)>>I)])>>>16&255,x=65535&N,!(I+(R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}b>>>=I,v-=I,r.back+=I;}if(b>>>=R,v-=R,r.back+=R,r.length=x,0===k){r.mode=26;break}if(32&k){r.back=-1,r.mode=h;break}if(64&k){e.msg="invalid literal/length code",r.mode=l;break}r.extra=15&k,r.mode=22;case 22:if(r.extra){for(P=r.extra;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}r.length+=b&(1<<r.extra)-1,b>>>=r.extra,v-=r.extra,r.back+=r.extra;}r.was=r.length,r.mode=23;case 23:for(;k=(N=r.distcode[b&(1<<r.distbits)-1])>>>16&255,x=65535&N,!((R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}if(0==(240&k)){for(I=R,M=k,F=x;k=(N=r.distcode[F+((b&(1<<I+M)-1)>>I)])>>>16&255,x=65535&N,!(I+(R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}b>>>=I,v-=I,r.back+=I;}if(b>>>=R,v-=R,r.back+=R,64&k){e.msg="invalid distance code",r.mode=l;break}r.offset=x,r.extra=15&k,r.mode=24;case 24:if(r.extra){for(P=r.extra;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}r.offset+=b&(1<<r.extra)-1,b>>>=r.extra,v-=r.extra,r.back+=r.extra;}if(r.offset>r.dmax){e.msg="invalid distance too far back",r.mode=l;break}r.mode=25;case 25:if(0===y)break e;if(S=E-y,r.offset>S){if((S=r.offset-S)>r.whave&&r.sane){e.msg="invalid distance too far back",r.mode=l;break}S>r.wnext?(S-=r.wnext,A=r.wsize-S):A=r.wnext-S,S>r.length&&(S=r.length),C=r.window;}else C=d,A=g-r.offset,S=r.length;S>y&&(S=y),y-=S,r.length-=S;do{d[g++]=C[A++];}while(--S);0===r.length&&(r.mode=21);break;case 26:if(0===y)break e;d[g++]=r.length,y--,r.mode=21;break;case 27:if(r.wrap){for(;v<32;){if(0===m)break e;m--,b|=c[p++]<<v,v+=8;}if(E-=y,e.total_out+=E,r.total+=E,E&&(e.adler=r.check=r.flags?o(r.check,d,E,g-E):i(r.check,d,E,g-E)),E=y,(r.flags?b:u(b))!==r.check){e.msg="incorrect data check",r.mode=l;break}b=0,v=0;}r.mode=28;case 28:if(r.wrap&&r.flags){for(;v<32;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8;}if(b!==(4294967295&r.total)){e.msg="incorrect length check",r.mode=l;break}b=0,v=0;}r.mode=29;case 29:T=1;break e;case l:T=-3;break e;case 31:return -4;default:return f}return e.next_out=g,e.avail_out=y,e.next_in=p,e.avail_in=m,r.hold=b,r.bits=v,(r.wsize||E!==e.avail_out&&r.mode<l&&(r.mode<27||4!==t))&&_(e,e.output,e.next_out,E-e.avail_out)?(r.mode=31,-4):(B-=e.avail_in,E-=e.avail_out,e.total_in+=B,e.total_out+=E,r.total+=E,r.wrap&&E&&(e.adler=r.check=r.flags?o(r.check,d,E,e.next_out-E):i(r.check,d,E,e.next_out-E)),e.data_type=r.bits+(r.last?64:0)+(r.mode===h?128:0)+(20===r.mode||15===r.mode?256:0),(0===B&&0===E||4===t)&&0===T&&(T=-5),T)},t.inflateEnd=function(e){if(!e||!e.state)return f;var t=e.state;return t.window&&(t.window=null),e.state=null,0},t.inflateGetHeader=function(e,t){var r;return e&&e.state?0==(2&(r=e.state).wrap)?f:(r.head=t,t.done=!1,0):f},t.inflateSetDictionary=function(e,t){var r,n=t.length;return e&&e.state?0!==(r=e.state).wrap&&11!==r.mode?f:11===r.mode&&i(1,t,n,0)!==r.check?-3:_(e,t,n,n)?(r.mode=31,-4):(r.havedict=1,0):f},t.inflateInfo="pako inflate (from Nodeca project)";},9241:(e,t,r)=>{var n=r(4236),i=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],o=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],s=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],a=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];e.exports=function(e,t,r,f,h,l,u,c){var d,p,g,m,y,b,v,w,_,B=c.bits,E=0,S=0,A=0,C=0,R=0,k=0,x=0,I=0,M=0,F=0,O=null,T=0,U=new n.Buf16(16),P=new n.Buf16(16),N=null,L=0;for(E=0;E<=15;E++)U[E]=0;for(S=0;S<f;S++)U[t[r+S]]++;for(R=B,C=15;C>=1&&0===U[C];C--);if(R>C&&(R=C),0===C)return h[l++]=20971520,h[l++]=20971520,c.bits=1,0;for(A=1;A<C&&0===U[A];A++);for(R<A&&(R=A),I=1,E=1;E<=15;E++)if(I<<=1,(I-=U[E])<0)return -1;if(I>0&&(0===e||1!==C))return -1;for(P[1]=0,E=1;E<15;E++)P[E+1]=P[E]+U[E];for(S=0;S<f;S++)0!==t[r+S]&&(u[P[t[r+S]]++]=S);if(0===e?(O=N=u,b=19):1===e?(O=i,T-=257,N=o,L-=257,b=256):(O=s,N=a,b=-1),F=0,S=0,E=A,y=l,k=R,x=0,g=-1,m=(M=1<<R)-1,1===e&&M>852||2===e&&M>592)return 1;for(;;){v=E-x,u[S]<b?(w=0,_=u[S]):u[S]>b?(w=N[L+u[S]],_=O[T+u[S]]):(w=96,_=0),d=1<<E-x,A=p=1<<k;do{h[y+(F>>x)+(p-=d)]=v<<24|w<<16|_|0;}while(0!==p);for(d=1<<E-1;F&d;)d>>=1;if(0!==d?(F&=d-1,F+=d):F=0,S++,0==--U[E]){if(E===C)break;E=t[r+u[S]];}if(E>R&&(F&m)!==g){for(0===x&&(x=R),y+=A,I=1<<(k=E-x);k+x<C&&!((I-=U[k+x])<=0);)k++,I<<=1;if(M+=1<<k,1===e&&M>852||2===e&&M>592)return 1;h[g=F&m]=R<<24|k<<16|y-l|0;}}return 0!==F&&(h[y+F]=E-x<<24|64<<16|0),c.bits=R,0};},8898:e=>{e.exports={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible version"};},342:(e,t,r)=>{var n=r(4236);function i(e){for(var t=e.length;--t>=0;)e[t]=0;}var o=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0],s=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13],a=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7],f=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],h=new Array(576);i(h);var l=new Array(60);i(l);var u=new Array(512);i(u);var c=new Array(256);i(c);var d=new Array(29);i(d);var p,g,m,y=new Array(30);function b(e,t,r,n,i){this.static_tree=e,this.extra_bits=t,this.extra_base=r,this.elems=n,this.max_length=i,this.has_stree=e&&e.length;}function v(e,t){this.dyn_tree=e,this.max_code=0,this.stat_desc=t;}function w(e){return e<256?u[e]:u[256+(e>>>7)]}function _(e,t){e.pending_buf[e.pending++]=255&t,e.pending_buf[e.pending++]=t>>>8&255;}function B(e,t,r){e.bi_valid>16-r?(e.bi_buf|=t<<e.bi_valid&65535,_(e,e.bi_buf),e.bi_buf=t>>16-e.bi_valid,e.bi_valid+=r-16):(e.bi_buf|=t<<e.bi_valid&65535,e.bi_valid+=r);}function E(e,t,r){B(e,r[2*t],r[2*t+1]);}function S(e,t){var r=0;do{r|=1&e,e>>>=1,r<<=1;}while(--t>0);return r>>>1}function A(e,t,r){var n,i,o=new Array(16),s=0;for(n=1;n<=15;n++)o[n]=s=s+r[n-1]<<1;for(i=0;i<=t;i++){var a=e[2*i+1];0!==a&&(e[2*i]=S(o[a]++,a));}}function C(e){var t;for(t=0;t<286;t++)e.dyn_ltree[2*t]=0;for(t=0;t<30;t++)e.dyn_dtree[2*t]=0;for(t=0;t<19;t++)e.bl_tree[2*t]=0;e.dyn_ltree[512]=1,e.opt_len=e.static_len=0,e.last_lit=e.matches=0;}function R(e){e.bi_valid>8?_(e,e.bi_buf):e.bi_valid>0&&(e.pending_buf[e.pending++]=e.bi_buf),e.bi_buf=0,e.bi_valid=0;}function k(e,t,r,n){var i=2*t,o=2*r;return e[i]<e[o]||e[i]===e[o]&&n[t]<=n[r]}function x(e,t,r){for(var n=e.heap[r],i=r<<1;i<=e.heap_len&&(i<e.heap_len&&k(t,e.heap[i+1],e.heap[i],e.depth)&&i++,!k(t,n,e.heap[i],e.depth));)e.heap[r]=e.heap[i],r=i,i<<=1;e.heap[r]=n;}function I(e,t,r){var n,i,a,f,h=0;if(0!==e.last_lit)do{n=e.pending_buf[e.d_buf+2*h]<<8|e.pending_buf[e.d_buf+2*h+1],i=e.pending_buf[e.l_buf+h],h++,0===n?E(e,i,t):(E(e,(a=c[i])+256+1,t),0!==(f=o[a])&&B(e,i-=d[a],f),E(e,a=w(--n),r),0!==(f=s[a])&&B(e,n-=y[a],f));}while(h<e.last_lit);E(e,256,t);}function M(e,t){var r,n,i,o=t.dyn_tree,s=t.stat_desc.static_tree,a=t.stat_desc.has_stree,f=t.stat_desc.elems,h=-1;for(e.heap_len=0,e.heap_max=573,r=0;r<f;r++)0!==o[2*r]?(e.heap[++e.heap_len]=h=r,e.depth[r]=0):o[2*r+1]=0;for(;e.heap_len<2;)o[2*(i=e.heap[++e.heap_len]=h<2?++h:0)]=1,e.depth[i]=0,e.opt_len--,a&&(e.static_len-=s[2*i+1]);for(t.max_code=h,r=e.heap_len>>1;r>=1;r--)x(e,o,r);i=f;do{r=e.heap[1],e.heap[1]=e.heap[e.heap_len--],x(e,o,1),n=e.heap[1],e.heap[--e.heap_max]=r,e.heap[--e.heap_max]=n,o[2*i]=o[2*r]+o[2*n],e.depth[i]=(e.depth[r]>=e.depth[n]?e.depth[r]:e.depth[n])+1,o[2*r+1]=o[2*n+1]=i,e.heap[1]=i++,x(e,o,1);}while(e.heap_len>=2);e.heap[--e.heap_max]=e.heap[1],function(e,t){var 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S&&(r.hostname=r.host=E.shift(),(x=!!(r.host&&r.host.indexOf("@")>0)&&r.host.split("@"))&&(r.auth=x.shift(),r.host=r.hostname=x.shift())),r.search=e.search,r.query=e.query,i.isNull(r.pathname)&&i.isNull(r.search)||(r.path=(r.pathname?r.pathname:"")+(r.search?r.search:"")),r.href=r.format(),r;if(!E.length)return r.pathname=null,r.search?r.path="/"+r.search:r.path=null,r.href=r.format(),r;for(var A=E.slice(-1)[0],C=(r.host||e.host||E.length>1)&&("."===A||".."===A)||""===A,R=0,k=E.length;k>=0;k--)"."===(A=E[k])?E.splice(k,1):".."===A?(E.splice(k,1),R++):R&&(E.splice(k,1),R--);if(!_&&!B)for(;R--;R)E.unshift("..");!_||""===E[0]||E[0]&&"/"===E[0].charAt(0)||E.unshift(""),C&&"/"!==E.join("/").substr(-1)&&E.push("");var x,I=""===E[0]||E[0]&&"/"===E[0].charAt(0);return S&&(r.hostname=r.host=I?"":E.length?E.shift():"",(x=!!(r.host&&r.host.indexOf("@")>0)&&r.host.split("@"))&&(r.auth=x.shift(),r.host=r.hostname=x.shift())),(_=_||r.host&&E.length)&&!I&&E.unshift(""),E.length?r.pathname=E.join("/"):(r.pathname=null,r.path=null),i.isNull(r.pathname)&&i.isNull(r.search)||(r.path=(r.pathname?r.pathname:"")+(r.search?r.search:"")),r.auth=e.auth||r.auth,r.slashes=r.slashes||e.slashes,r.href=r.format(),r},o.prototype.parseHost=function(){var e=this.host,t=a.exec(e);t&&(":"!==(t=t[0])&&(this.port=t.substr(1)),e=e.substr(0,e.length-t.length)),e&&(this.hostname=e);};},2502:e=>{e.exports={isString:function(e){return "string"==typeof e},isObject:function(e){return "object"==typeof e&&null!==e},isNull:function(e){return null===e},isNullOrUndefined:function(e){return null==e}};},7067:()=>{}},t={};function r(n){var i=t[n];if(void 0!==i)return i.exports;var o=t[n]={id:n,loaded:!1,exports:{}};return e[n].call(o.exports,o,o.exports,r),o.loaded=!0,o.exports}r.n=e=>{var t=e&&e.__esModule?()=>e.default:()=>e;return r.d(t,{a:t}),t},r.d=(e,t)=>{for(var n in t)r.o(t,n)&&!r.o(e,n)&&Object.defineProperty(e,n,{enumerable:!0,get:t[n]});},r.g=function(){if("object"==typeof globalThis)return globalThis;try{return this||new Function("return this")()}catch(e){if("object"==typeof window)return window}}(),r.o=(e,t)=>Object.prototype.hasOwnProperty.call(e,t),r.r=e=>{"undefined"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:"Module"}),Object.defineProperty(e,"__esModule",{value:!0});},r.nmd=e=>(e.paths=[],e.children||(e.children=[]),e);var n=r(5590);
+        //window.gmodCRAM=n
+        return n;
+    };
+
+    const gmodCRAM = fn();
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2018 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const READ_STRAND_FLAG = 0x10;
+    const MATE_STRAND_FLAG = 0x20;
+
+    const CRAM_MATE_STRAND_FLAG = 0x1;
+
+    /**
+     * Class for reading a cram file.  Wraps the gMOD Cram package.
+     *
+     * @param config
+     * @constructor
+     */
+    class CramReader {
+
+        constructor(config, genome, browser) {
+
+            this.config = config;
+            this.browser = browser;
+            this.genome = genome;
+
+            this.cramFile = new gmodCRAM.CramFile({
+                filehandle: new FileHandler(config.url, config),
+                seqFetch: config.seqFetch || seqFetch.bind(this),
+                checkSequenceMD5: config.checkSequenceMD5 !== undefined ? config.checkSequenceMD5 : true
+            });
+
+            const indexFileHandle = new FileHandler(config.indexURL, config);
+            this.indexedCramFile = new gmodCRAM.IndexedCramFile({
+                cram: this.cramFile,
+                index: new gmodCRAM.CraiIndex({
+                    filehandle: indexFileHandle
+                }),
+                fetchSizeLimit: 30000000
+            });
+
+            BamUtils.setReaderDefaults(this, config);
+
+            function seqFetch(seqID, start, end) {
+
+                const sequence = this.genome.sequence;
+                const genome = this.genome;
+
+                return this.getHeader()
+                    .then(function (header) {
+                        const chr = genome.getChromosomeName(header.chrNames[seqID]);
+                        return sequence.getSequence(chr, start - 1, end)
+                    })
+            }
+        }
+
+
+        /**
+         * Parse the sequence dictionary from the SAM header and build chr name tables.  This function
+         * is public so it can be unit tested.
+         *
+         * @returns {PromiseLike<chrName, chrToIndex, chrAliasTable}>}
+         */
+
+        async getHeader() {
+
+            if (!this.header) {
+                const genome = this.genome;
+                const samHeader = await this.cramFile.getSamHeader();
+                const chrToIndex = {};
+                const chrNames = [];
+                const chrAliasTable = {};
+                const readGroups = [];
+
+                for (let line of samHeader) {
+                    if ('SQ' === line.tag) {
+                        for (let d of line.data) {
+                            if (d.tag === "SN") {
+                                const seq = d.value;
+                                chrToIndex[seq] = chrNames.length;
+                                chrNames.push(seq);
+                                if (genome) {
+                                    const alias = genome.getChromosomeName(seq);
+                                    chrAliasTable[alias] = seq;
+                                }
+                                break
+                            }
+                        }
+                    } else if ('RG' === line.tag) {
+                        readGroups.push(line.data);
+                    }
+                }
+
+                this.header = {
+                    chrNames: chrNames,
+                    chrToIndex: chrToIndex,
+                    chrAliasTable: chrAliasTable,
+                    readGroups: readGroups
+                };
+            }
+
+            return this.header
+        }
+
+        async readAlignments(chr, bpStart, bpEnd) {
+
+            this.browser;
+            const header = await this.getHeader();
+            const queryChr = header.chrAliasTable.hasOwnProperty(chr) ? header.chrAliasTable[chr] : chr;
+            const chrIdx = header.chrToIndex[queryChr];
+            const alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, this.config);
+
+            if (chrIdx === undefined) {
+                return alignmentContainer
+
+            } else {
+
+                try {
+                    const records = await this.indexedCramFile.getRecordsForRange(chrIdx, bpStart, bpEnd);
+
+                    for (let record of records) {
+
+                        const refID = record.sequenceId;
+                        const pos = record.alignmentStart;
+                        const alignmentEnd = pos + record.lengthOnRef;
+
+                        if (refID < 0) {
+                            continue   // unmapped read
+                        } else if (refID > chrIdx || pos > bpEnd) {
+                            return    // off right edge, we're done
+                        } else if (refID < chrIdx) {
+                            continue   // Sequence to left of start, not sure this is possible
+                        }
+                        if (alignmentEnd < bpStart) {
+                            continue
+                        }  // Record out-of-range "to the left", skip to next one
+
+                        const alignment = decodeCramRecord(record, header.chrNames);
+
+                        if (this.filter.pass(alignment)) {
+                            alignmentContainer.push(alignment);
+                        }
+                    }
+
+                    alignmentContainer.finish();
+                    return alignmentContainer
+                } catch (error) {
+                    let message = error.message;
+                    if (message && message.indexOf("MD5") >= 0) {
+                        message = "Sequence mismatch. Is this the correct genome for the loaded CRAM?";
+                    }
+                    this.browser.alert.present(new Error(message));
+                    throw error
+                }
+            }
+
+            function decodeCramRecord(record, chrNames) {
+
+                const alignment = new BamAlignment();
+
+                alignment.chr = chrNames[record.sequenceId];
+                alignment.start = record.alignmentStart - 1;
+                alignment.lengthOnRef = record.lengthOnRef;
+                alignment.flags = record.flags;
+                alignment.strand = !(record.flags & READ_STRAND_FLAG);
+                alignment.fragmentLength = record.templateLength || record.templateSize;
+                alignment.mq = record.mappingQuality;
+                alignment.end = record.alignmentStart + record.lengthOnRef;
+                alignment.readGroupId = record.readGroupId;
+
+                if (record.mate && record.mate.sequenceId !== undefined) {
+                    const strand = record.mate.flags !== undefined ?
+                        !(record.mate.flags & CRAM_MATE_STRAND_FLAG) :
+                        !(record.flags & MATE_STRAND_FLAG);
+
+                    alignment.mate = {
+                        chr: chrNames[record.mate.sequenceId],
+                        position: record.mate.alignmentStart,
+                        strand: strand
+                    };
+                }
+
+                alignment.seq = record.getReadBases();
+                alignment.qual = record.qualityScores;
+                alignment.tagDict = record.tags;
+                alignment.readName = record.readName;
+
+                // TODO -- cigar encoded in tag?
+                // BamUtils.bam_tag2cigar(ba, blockEnd, p, lseq, alignment, cigarArray);
+
+                makeBlocks(record, alignment);
+
+                if (alignment.mate && alignment.start > alignment.mate.position && alignment.fragmentLength > 0) {
+                    alignment.fragmentLength = -alignment.fragmentLength;
+                }
+
+                BamUtils.setPairOrientation(alignment);
+
+                return alignment
+
+            }
+
+            function makeBlocks(cramRecord, alignment) {
+
+                const blocks = [];
+                let insertions;
+                let gaps;
+                let basesUsed = 0;
+                let cigarString = '';
+
+                alignment.scStart = alignment.start;
+                alignment.scLengthOnRef = alignment.lengthOnRef;
+
+                if (cramRecord.readFeatures) {
+
+                    for (let feature of cramRecord.readFeatures) {
+
+                        const code = feature.code;
+                        const data = feature.data;
+                        const readPos = feature.pos - 1;
+                        const refPos = feature.refPos - 1;
+
+                        switch (code) {
+                            case 'S' :
+                            case 'I':
+                            case 'i':
+                            case 'N':
+                            case 'D':
+                                if (readPos > basesUsed) {
+                                    const len = readPos - basesUsed;
+                                    blocks.push(new AlignmentBlock({
+                                        start: refPos - len,
+                                        seqOffset: basesUsed,
+                                        len: len,
+                                        type: 'M'
+                                    }));
+                                    basesUsed += len;
+                                    cigarString += len + 'M';
+                                }
+
+                                if ('S' === code) {
+                                    let scPos = refPos;
+                                    alignment.scLengthOnRef += data.length;
+                                    if (readPos === 0) {
+                                        alignment.scStart -= data.length;
+                                        scPos -= data.length;
+                                    }
+                                    const len = data.length;
+                                    blocks.push(new AlignmentBlock({
+                                        start: scPos,
+                                        seqOffset: basesUsed,
+                                        len: len,
+                                        type: 'S'
+                                    }));
+                                    basesUsed += len;
+                                    cigarString += len + code;
+                                } else if ('I' === code || 'i' === code) {
+                                    if (insertions === undefined) {
+                                        insertions = [];
+                                    }
+                                    const len = 'i' === code ? 1 : data.length;
+                                    insertions.push(new AlignmentBlock({
+                                        start: refPos,
+                                        len: len,
+                                        seqOffset: basesUsed,
+                                        type: 'I'
+                                    }));
+                                    basesUsed += len;
+                                    cigarString += len + code;
+                                } else if ('D' === code || 'N' === code) {
+                                    if (!gaps) {
+                                        gaps = [];
+                                    }
+                                    gaps.push({
+                                        start: refPos,
+                                        len: data,
+                                        type: code
+                                    });
+                                    cigarString += data + code;
+                                }
+                                break
+
+                            case 'H':
+                            case 'P':
+                                cigarString += data + code;
+                                break
+                            //  Ignore
+                        }
+                    }
+                }
+
+                // Last block
+                const len = cramRecord.readLength - basesUsed;
+                if (len > 0) {
+                    blocks.push(new AlignmentBlock({
+                        start: cramRecord.alignmentStart + cramRecord.lengthOnRef - len - 1,
+                        seqOffset: basesUsed,
+                        len: len,
+                        type: 'M'
+                    }));
+
+                    cigarString += len + 'M';
+                }
+
+                alignment.blocks = blocks;
+                alignment.insertions = insertions;
+                alignment.gaps = gaps;
+                alignment.cigar = cigarString;
+
+            }
+
+        }
+    }
+
+    class FileHandler {
+
+        constructor(source, config) {
+            this.position = 0;
+            this.url = source;
+            this.config = config;
+            this.cache = new BufferCache({
+                fetch: (start, length) => this._fetch(start, length),
+            });
+        }
+
+        async _fetch(position, length) {
+
+            const loadRange = {start: position, size: length};
+            this._stat = {size: undefined};
+            const arrayBuffer = await igvxhr.loadArrayBuffer(this.url, buildOptions(this.config, {range: loadRange}));
+            return Buffer.from(arrayBuffer)
+        }
+
+        async read(buffer, offset = 0, length = Infinity, position = 0) {
+            let readPosition = position;
+            if (readPosition === null) {
+                readPosition = this.position;
+                this.position += length;
+            }
+            return this.cache.get(buffer, offset, length, position)
+        }
+
+        async readFile() {
+            const arrayBuffer = await igvxhr.loadArrayBuffer(this.url, buildOptions(this.config));
+            return Buffer.from(arrayBuffer)
+        }
+
+        async stat() {
+            if (!this._stat) {
+                const buf = Buffer.allocUnsafe(10);
+                await this.read(buf, 0, 10, 0);
+                if (!this._stat)
+                    throw new Error(`unable to determine size of file at ${this.url}`)
+            }
+            return this._stat
+        }
+    }
+
+    class BufferCache {
+
+        constructor({fetch, size = 10000000, chunkSize = 32768}) {
+
+            this.fetch = fetch;
+            this.chunkSize = chunkSize;
+            this.lruCache = new QuickLRU({maxSize: Math.floor(size / chunkSize)});
+        }
+
+        async get(outputBuffer, offset, length, position) {
+            if (outputBuffer.length < offset + length)
+                throw new Error('output buffer not big enough for request')
+
+            // calculate the list of chunks involved in this fetch
+            const firstChunk = Math.floor(position / this.chunkSize);
+            const lastChunk = Math.floor((position + length) / this.chunkSize);
+
+            // fetch them all as necessary
+            const fetches = new Array(lastChunk - firstChunk + 1);
+            for (let chunk = firstChunk; chunk <= lastChunk; chunk += 1) {
+                fetches[chunk - firstChunk] = this._getChunk(chunk).then(data => ({
+                    data,
+                    chunkNumber: chunk,
+                }));
+            }
+
+            // stitch together the response buffer using them
+            const chunks = await Promise.all(fetches);
+            const chunksOffset = position - chunks[0].chunkNumber * this.chunkSize;
+            chunks.forEach(({data, chunkNumber}) => {
+                const chunkPositionStart = chunkNumber * this.chunkSize;
+                let copyStart = 0;
+                let copyEnd = this.chunkSize;
+                let copyOffset =
+                    offset + (chunkNumber - firstChunk) * this.chunkSize - chunksOffset;
+
+                if (chunkNumber === firstChunk) {
+                    copyOffset = offset;
+                    copyStart = chunksOffset;
+                }
+                if (chunkNumber === lastChunk) {
+                    copyEnd = position + length - chunkPositionStart;
+                }
+
+                data.copy(outputBuffer, copyOffset, copyStart, copyEnd);
+            });
+        }
+
+        _getChunk(chunkNumber) {
+            const cachedPromise = this.lruCache.get(chunkNumber);
+            if (cachedPromise) return cachedPromise
+
+            const freshPromise = this.fetch(
+                chunkNumber * this.chunkSize,
+                this.chunkSize,
+            );
+            this.lruCache.set(chunkNumber, freshPromise);
+            return freshPromise
+        }
+    }
+
+    class QuickLRU {
+        constructor(options = {}) {
+            if (!(options.maxSize && options.maxSize > 0)) {
+                throw new TypeError('`maxSize` must be a number greater than 0')
+            }
+
+            this.maxSize = options.maxSize;
+            this.cache = new Map();
+            this.oldCache = new Map();
+            this._size = 0;
+        }
+
+        _set(key, value) {
+            this.cache.set(key, value);
+            this._size++;
+
+            if (this._size >= this.maxSize) {
+                this._size = 0;
+                this.oldCache = this.cache;
+                this.cache = new Map();
+            }
+        }
+
+        get(key) {
+            if (this.cache.has(key)) {
+                return this.cache.get(key)
+            }
+
+            if (this.oldCache.has(key)) {
+                const value = this.oldCache.get(key);
+                this._set(key, value);
+                return value
+            }
+        }
+
+        set(key, value) {
+            if (this.cache.has(key)) {
+                this.cache.set(key, value);
+            } else {
+                this._set(key, value);
+            }
+
+            return this
+        }
+
+        has(key) {
+            return this.cache.has(key) || this.oldCache.has(key)
+        }
+
+        peek(key) {
+            if (this.cache.has(key)) {
+                return this.cache.get(key)
+            }
+
+            if (this.oldCache.has(key)) {
+                return this.oldCache.get(key)
+            }
+        }
+
+        delete(key) {
+            const deleted = this.cache.delete(key);
+            if (deleted) {
+                this._size--;
+            }
+
+            return this.oldCache.delete(key) || deleted
+        }
+
+        clear() {
+            this.cache.clear();
+            this.oldCache.clear();
+            this._size = 0;
+        }
+
+        * keys() {
+            for (const [key] of this) {
+                yield key;
+            }
+        }
+
+        * values() {
+            for (const [, value] of this) {
+                yield value;
+            }
+        }
+
+        * [Symbol.iterator]() {
+            for (const item of this.cache) {
+                yield item;
+            }
+
+            for (const item of this.oldCache) {
+                const [key] = item;
+                if (!this.cache.has(key)) {
+                    yield item;
+                }
+            }
+        }
+
+        get size() {
+            let oldCacheSize = 0;
+            for (const key of this.oldCache.keys()) {
+                if (!this.cache.has(key)) {
+                    oldCacheSize++;
+                }
+            }
+
+            return this._size + oldCacheSize
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    var CigarOperationTable = {
+        "ALIGNMENT_MATCH": "M",
+        "INSERT": "I",
+        "DELETE": "D",
+        "SKIP": "N",
+        "CLIP_SOFT": "S",
+        "CLIP_HARD": "H",
+        "PAD": "P",
+        "SEQUENCE_MATCH": "=",
+        "SEQUENCE_MISMATCH": "X"
+    };
+
+    const Ga4ghAlignmentReader = function (config, genome) {
+
+        this.config = config;
+        this.genome = genome;
+        this.url = config.url;
+        this.filter = new BamFilter(config.filter);
+        this.readGroupSetIds = config.readGroupSetIds;
+        this.authKey = config.authKey;   // Might be undefined or nill
+
+        this.samplingWindowSize = config.samplingWindowSize === undefined ? 100 : config.samplingWindowSize;
+        this.samplingDepth = config.samplingDepth === undefined ? 1000 : config.samplingDepth;
+        if (config.viewAsPairs) {
+            this.pairsSupported = true;
+        } else {
+            this.pairsSupported = config.pairsSupported === undefined ? true : config.pairsSupported;
+        }
+    };
+
+
+    Ga4ghAlignmentReader.prototype.readAlignments = function (chr, bpStart, bpEnd) {
+
+        const genome = this.genome;
+        const self = this;
+
+        return getChrAliasTable()
+
+            .then(function (chrAliasTable) {
+
+                var queryChr = chrAliasTable.hasOwnProperty(chr) ? chrAliasTable[chr] : chr,
+                    readURL = self.url + "/reads/search";
+
+                return ga4ghSearch({
+                    url: readURL,
+                    body: {
+                        "readGroupSetIds": [self.readGroupSetIds],
+                        "referenceName": queryChr,
+                        "start": bpStart,
+                        "end": bpEnd,
+                        "pageSize": "10000"
+                    },
+                    decode: decodeGa4ghReads,
+                    results: new AlignmentContainer(chr, bpStart, bpEnd, self.config)
+                })
+            })
+
+
+        function getChrAliasTable() {
+
+            if (self.chrAliasTable) {
+
+                return Promise.resolve(self.chrAliasTable)
+
+            } else {
+
+                return self.readMetadata()
+
+                    .then(function (json) {
+
+                        self.chrAliasTable = {};
+
+                        if (genome && json.readGroups && json.readGroups.length > 0) {
+
+                            var referenceSetId = json.readGroups[0].referenceSetId;
+
+                            if (referenceSetId) {
+
+                                // Query for reference names to build an alias table (map of genome ref names -> dataset ref names)
+                                var readURL = self.url + "/references/search";
+
+                                return ga4ghSearch({
+                                    url: readURL,
+                                    body: {
+                                        "referenceSetId": referenceSetId
+                                    },
+                                    decode: function (j) {
+                                        return j.references
+                                    }
+                                })
+                                    .then(function (references) {
+
+
+                                        references.forEach(function (ref) {
+                                            var refName = ref.name,
+                                                alias = genome.getChromosomeName(refName);
+                                            self.chrAliasTable[alias] = refName;
+                                        });
+
+
+                                        return self.chrAliasTable
+
+                                    })
+                            } else {
+
+                                // Try hardcoded constants -- workaround for non-compliant data at Google
+                                populateChrAliasTable(self.chrAliasTable, self.config.datasetId);
+
+                                return self.chrAliasTable
+                            }
+                        } else {
+                            // No browser object, can't build map.  This can occur when run from unit tests
+                            return self.chrAliasTable
+                        }
+                    })
+            }
+        }
+
+        /**
+         * Decode an array of ga4gh read records
+         *
+
+         */
+        function decodeGa4ghReads(j) {
+
+            var i,
+                jsonRecords = j.alignments,
+                len = jsonRecords.length,
+                alignment,
+                jsonAlignment,
+                cigarDecoded,
+                alignments = [],
+                mate,
+                blocks;
+
+            for (i = 0; i < len; i++) {
+
+                let record = jsonRecords[i];
+
+                alignment = new BamAlignment();
+
+                alignment.readName = record.fragmentName;
+                alignment.properPlacement = record.properPlacement;
+                alignment.duplicateFragment = record.duplicateFragment;
+                alignment.numberReads = record.numberReads;
+                alignment.fragmentLength = record.fragmentLength;
+                alignment.readNumber = record.readNumber;
+                alignment.failedVendorQualityChecks = record.failedVendorQualityChecks;
+                alignment.secondaryAlignment = record.secondaryAlignment;
+                alignment.supplementaryAlignment = record.supplementaryAlignment;
+                alignment.seq = record.alignedSequence;
+                alignment.qual = record.alignedQuality;
+                alignment.matePos = record.nextMatePosition;
+                alignment.tagDict = record.info;
+                alignment.flags = encodeFlags();
+
+
+                jsonAlignment = record.alignment;
+                if (jsonAlignment) {
+                    alignment.mapped = true;
+
+                    alignment.chr = record.alignment.position.referenceName;
+                    if (genome) alignment.chr = genome.getChromosomeName(alignment.chr);
+
+                    alignment.start = parseInt(record.alignment.position.position);
+                    alignment.strand = !(record.alignment.position.reverseStrand);
+                    alignment.mq = record.alignment.mappingQuality;
+                    alignment.cigar = encodeCigar(record.alignment.cigar);
+                    cigarDecoded = translateCigar(record.alignment.cigar);
+
+                    alignment.lengthOnRef = cigarDecoded.lengthOnRef;
+
+                    blocks = makeBlocks(alignment, cigarDecoded.array);
+                    alignment.blocks = blocks.blocks;
+                    alignment.insertions = blocks.insertions;
+
+                } else {
+                    alignment.mapped = false;
+                }
+
+                mate = record.nextMatePosition;
+                if (mate) {
+                    alignment.mate = {
+                        chr: mate.referenceFrame,
+                        position: parseInt(mate.position),
+                        strand: !mate.reverseStrand
+                    };
+                }
+
+                if (self.filter.pass(alignment)) {
+                    alignments.push(alignment);
+                }
+
+
+            }
+
+            return alignments
+
+
+            // Encode a cigar string -- used for popup text
+            function encodeCigar(cigarArray) {
+
+                var cigarString = "";
+                cigarArray.forEach(function (cigarUnit) {
+                    var op = CigarOperationTable[cigarUnit.operation],
+                        len = cigarUnit.operationLength;
+                    cigarString = cigarString + (len + op);
+                });
+
+                return cigarString
+            }
+
+            // TODO -- implement me
+            function encodeFlags(json) {
+                return 0
+            }
+
+            function translateCigar(cigar) {
+
+                var cigarUnit, opLen, opLtr,
+                    lengthOnRef = 0,
+                    cigarArray = [],
+                    i;
+
+                for (i = 0; i < cigar.length; i++) {
+
+                    cigarUnit = cigar[i];
+
+                    opLtr = CigarOperationTable[cigarUnit.operation];
+                    opLen = parseInt(cigarUnit.operationLength);    // Google represents long as a String
+
+                    if (opLtr === 'M' || opLtr === 'EQ' || opLtr === 'X' || opLtr === 'D' || opLtr === 'N' || opLtr === '=')
+                        lengthOnRef += opLen;
+
+                    cigarArray.push({len: opLen, ltr: opLtr});
+
+                }
+
+                return {lengthOnRef: lengthOnRef, array: cigarArray}
+            }
+
+
+            /**
+             * Split the alignment record into blocks as specified in the cigarArray.  Each aligned block contains
+             * its portion of the read sequence and base quality strings.  A read sequence or base quality string
+             * of "*" indicates the value is not recorded.  In all other cases the length of the block sequence (block.seq)
+             * and quality string (block.qual) must == the block length.
+             *
+             * NOTE: Insertions are not yet treated // TODO
+             *
+             * @param record
+             * @param cigarArray
+             * @returns array of blocks
+             */
+            function makeBlocks(record, cigarArray) {
+
+
+                var blocks = [],
+                    gaps,
+                    insertions,
+                    seqOffset = 0,
+                    pos = record.start,
+                    len = cigarArray.length,
+                    gapType;
+
+                for (var i = 0; i < len; i++) {
+
+                    var c = cigarArray[i];
+
+                    switch (c.ltr) {
+                        case 'H' :
+                            break // ignore hard clips
+                        case 'P' :
+                            break // ignore pads
+                        case 'S' :
+                            seqOffset += c.len;
+                            gapType = 'S';
+                            break // soft clip read bases
+                        case 'N' :
+                        case 'D' :
+                            if (gaps === undefined) {
+                                gaps = [];
+                            }
+                            gaps.push({
+                                start: pos,
+                                len: c.len,
+                                type: c.ltr
+                            });
+                            pos += c.len;
+                            break
+                        case 'I' :
+                            if (insertions === undefined) insertions = [];
+                            insertions.push(new AlignmentBlock({
+                                start: pos,
+                                len: c.len,
+                                seqOffset: seqOffset
+                            }));
+                            seqOffset += c.len;
+                            break
+                        case 'M' :
+                        case 'EQ' :
+                        case '=' :
+                        case 'X' :
+                            blocks.push(
+                                new AlignmentBlock({
+                                    start: pos,
+                                    len: c.len,
+                                    seqOffset: seqOffset,
+                                    gapType: gapType
+                                }));
+                            seqOffset += c.len;
+                            pos += c.len;
+
+                            break
+
+                        default :
+                            console.log("Error processing cigar element: " + c.len + c.ltr);
+                    }
+                }
+
+                return {blocks: blocks, insertions: insertions, gaps: gaps}
+            }
+        }
+    };
+
+
+    Ga4ghAlignmentReader.prototype.readMetadata = function () {
+
+        return ga4ghGet({
+            url: this.url,
+            entity: "readgroupsets",
+            entityId: this.readGroupSetIds
+        })
+    };
+
+    /**
+     * Hardcoded hack to work around some non-compliant google datasets
+     *
+     * @param chrAliasTable
+     * @param datasetId
+     */
+    function populateChrAliasTable(chrAliasTable, datasetId) {
+        var i;
+        if ("461916304629" === datasetId || "337315832689" === datasetId) {
+            for (i = 1; i < 23; i++) {
+                chrAliasTable["chr" + i] = i;
+            }
+            chrAliasTable["chrX"] = "X";
+            chrAliasTable["chrY"] = "Y";
+            chrAliasTable["chrM"] = "MT";
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class BamSource {
+
+        constructor(config, browser) {
+
+            const genome = browser.genome;
+
+            this.config = config;
+            this.genome = genome;
+
+            if (isDataURL(config.url)) {
+                this.config.indexed = false;
+            }
+
+            if ("ga4gh" === config.sourceType) {
+                this.bamReader = new Ga4ghAlignmentReader(config, genome);
+            } else if ("pysam" === config.sourceType) {
+                this.bamReader = new BamWebserviceReader(config, genome);
+            } else if ("htsget" === config.sourceType) {
+                this.bamReader = new HtsgetBamReader(config, genome);
+            } else if ("shardedBam" === config.sourceType) {
+                this.bamReader = new ShardedBamReader(config, genome);
+            } else if ("cram" === config.format) {
+                this.bamReader = new CramReader(config, genome, browser);
+            } else {
+                if (!this.config.indexURL && config.indexed !== false) {
+                    if (isString$2(this.config.url)) {
+                        const inferIndexPath$1 = inferIndexPath(this.config.url, "bai");
+                        if (inferIndexPath$1) {
+                            console.error(`Warning: no indexURL specified for ${this.config.url}.  Guessing ${this.baiPath}`);
+                            this.config.indexURL = inferIndexPath$1;
+                        } else {
+                            console.error(`Warning: no indexURL specified for ${this.config.url}.`);
+                            this.config.indexed = false;
+                        }
+                    } else {
+                        console.error(`Warning: no indexURL specified for ${this.config.name}.`);
+                        this.config.indexed = false;
+                    }
+                }
+
+                if (this.config.indexed !== false) { // && this.config.indexURL) {
+                    this.bamReader = new BamReader(config, genome);
+                } else {
+                    this.bamReader = new BamReaderNonIndexed(config, genome);
+                }
+            }
+
+            this.viewAsPairs = config.viewAsPairs;
+            this.showSoftClips = config.showSoftClips;
+        }
+
+        setViewAsPairs(bool) {
+            this.viewAsPairs = bool;
+        }
+
+        setShowSoftClips(bool) {
+            this.showSoftClips = bool;
+        }
+
+        async getAlignments(chr, bpStart, bpEnd) {
+
+            const genome = this.genome;
+            const showSoftClips = this.showSoftClips;
+
+            const alignmentContainer = await this.bamReader.readAlignments(chr, bpStart, bpEnd);
+            let alignments = alignmentContainer.alignments;
+            if (!this.viewAsPairs) {
+                alignments = unpairAlignments([{alignments: alignments}]);
+            }
+            const hasAlignments = alignments.length > 0;
+            alignmentContainer.packedAlignmentRows = packAlignmentRows(alignments, alignmentContainer.start, alignmentContainer.end, showSoftClips);
+
+            this.alignmentContainer = alignmentContainer;
+
+            if (hasAlignments) {
+                const sequence = await genome.sequence.getSequence(chr, alignmentContainer.start, alignmentContainer.end);
+                if (sequence) {
+                    alignmentContainer.coverageMap.refSeq = sequence;    // TODO -- fix this
+                    alignmentContainer.sequence = sequence;           // TODO -- fix this
+                    return alignmentContainer
+                } else {
+                    console.error("No sequence for: " + chr + ":" + alignmentContainer.start + "-" + alignmentContainer.end);
+                }
+            }
+            return alignmentContainer
+
+        }
+    }
+
+    function paintAxis(ctx, pixelWidth, pixelHeight) {
+
+        var x1,
+            x2,
+            y1,
+            y2,
+            a,
+            b,
+            reference,
+            shim,
+            font = {
+                'font': 'normal 10px Arial',
+                'textAlign': 'right',
+                'strokeStyle': "black"
+            };
+
+        if (undefined === this.dataRange || undefined === this.dataRange.max || undefined === this.dataRange.min) {
+            return
+        }
+
+        let flipAxis = (undefined === this.flipAxis) ? false : this.flipAxis;
+
+        IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+
+        reference = 0.95 * pixelWidth;
+        x1 = reference - 8;
+        x2 = reference;
+
+        //shim = 0.5 * 0.125;
+        shim = .01;
+        y1 = y2 = shim * pixelHeight;
+
+        a = {x: x2, y: y1};
+
+        // tick
+        IGVGraphics.strokeLine(ctx, x1, y1, x2, y2, font);
+        IGVGraphics.fillText(ctx, prettyPrint(flipAxis ? this.dataRange.min : this.dataRange.max), x1 + 4, y1 + 12, font);
+
+        //shim = 0.25 * 0.125;
+        y1 = y2 = (1.0 - shim) * pixelHeight;
+
+        b = {x: x2, y: y1};
+
+        // tick
+        IGVGraphics.strokeLine(ctx, x1, y1, x2, y2, font);
+        IGVGraphics.fillText(ctx, prettyPrint(flipAxis ? this.dataRange.max : this.dataRange.min), x1 + 4, y1 - 4, font);
+
+        IGVGraphics.strokeLine(ctx, a.x, a.y, b.x, b.y, font);
+
+        function prettyPrint(number) {
+            // if number >= 100, show whole number
+            // if >= 1 show 1 significant digits
+            // if <  1 show 2 significant digits
+
+            if (number === 0) {
+                return "0"
+            } else if (Math.abs(number) >= 10) {
+                return number.toFixed()
+            } else if (Math.abs(number) >= 1) {
+                return number.toFixed(1)
+            } else {
+                return number.toFixed(2)
+            }
+        }
+    }
+
+    class Locus {
+
+        constructor({chr, start, end}) {
+            this.chr = chr;
+            this.start = start;
+            this.end = end;
+        }
+
+
+        contains(locus) {
+            return locus.chr === this.chr && locus.start >= this.start && locus.end <= this.end
+        }
+
+        overlaps(locus) {
+            return locus.chr === this.chr && !(locus.end < this.start || locus.start > this.end)
+        }
+
+        extend(l) {
+            if (l.chr !== this.chr) return
+            this.start = Math.min(l.start, this.start);
+            this.end = Math.max(l.end, this.end);
+        }
+
+        getLocusString() {
+            if ('all' === this.chr) {
+                return 'all'
+            } else {
+                const ss = numberFormatter$1(Math.floor(this.start) + 1);
+                const ee = numberFormatter$1(Math.round(this.end));
+                return `${this.chr}:${ss}-${ee}`
+            }
+        }
+
+        static fromLocusString(str) {
+            if ('all' === str) {
+                return new Locus({chr: 'all'})
+            }
+            const parts = str.split(':');
+            const chr = parts[0];
+            const se = parts[1].split("-");
+            const start = Number.parseInt(se[0].replace(/,/g, "")) - 1;
+            const end = Number.parseInt(se[1].replace(/,/g, ""));
+            return new Locus({chr, start, end})
+        }
+    }
+
+    /*!
+     * vanilla-picker v2.12.1
+     * https://vanilla-picker.js.org
+     *
+     * Copyright 2017-2021 Andreas Borgen (https://github.com/Sphinxxxx), Adam Brooks (https://github.com/dissimulate)
+     * Released under the ISC license.
+     */
+    var classCallCheck = function (instance, Constructor) {
+      if (!(instance instanceof Constructor)) {
+        throw new TypeError("Cannot call a class as a function");
+      }
+    };
+
+    var createClass = function () {
+      function defineProperties(target, props) {
+        for (var i = 0; i < props.length; i++) {
+          var descriptor = props[i];
+          descriptor.enumerable = descriptor.enumerable || false;
+          descriptor.configurable = true;
+          if ("value" in descriptor) descriptor.writable = true;
+          Object.defineProperty(target, descriptor.key, descriptor);
+        }
+      }
+
+      return function (Constructor, protoProps, staticProps) {
+        if (protoProps) defineProperties(Constructor.prototype, protoProps);
+        if (staticProps) defineProperties(Constructor, staticProps);
+        return Constructor;
+      };
+    }();
+
+    var slicedToArray = function () {
+      function sliceIterator(arr, i) {
+        var _arr = [];
+        var _n = true;
+        var _d = false;
+        var _e = undefined;
+
+        try {
+          for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {
+            _arr.push(_s.value);
+
+            if (i && _arr.length === i) break;
+          }
+        } catch (err) {
+          _d = true;
+          _e = err;
+        } finally {
+          try {
+            if (!_n && _i["return"]) _i["return"]();
+          } finally {
+            if (_d) throw _e;
+          }
+        }
+
+        return _arr;
+      }
+
+      return function (arr, i) {
+        if (Array.isArray(arr)) {
+          return arr;
+        } else if (Symbol.iterator in Object(arr)) {
+          return sliceIterator(arr, i);
+        } else {
+          throw new TypeError("Invalid attempt to destructure non-iterable instance");
+        }
+      };
+    }();
+
+    String.prototype.startsWith = String.prototype.startsWith || function (needle) {
+        return this.indexOf(needle) === 0;
+    };
+    String.prototype.padStart = String.prototype.padStart || function (len, pad) {
+        var str = this;while (str.length < len) {
+            str = pad + str;
+        }return str;
+    };
+
+    var colorNames = { cb: '0f8ff', tqw: 'aebd7', q: '-ffff', qmrn: '7fffd4', zr: '0ffff', bg: '5f5dc', bsq: 'e4c4', bck: '---', nch: 'ebcd', b: '--ff', bvt: '8a2be2', brwn: 'a52a2a', brw: 'deb887', ctb: '5f9ea0', hrt: '7fff-', chcT: 'd2691e', cr: '7f50', rnw: '6495ed', crns: '8dc', crms: 'dc143c', cn: '-ffff', Db: '--8b', Dcn: '-8b8b', Dgnr: 'b8860b', Dgr: 'a9a9a9', Dgrn: '-64-', Dkhk: 'bdb76b', Dmgn: '8b-8b', Dvgr: '556b2f', Drng: '8c-', Drch: '9932cc', Dr: '8b--', Dsmn: 'e9967a', Dsgr: '8fbc8f', DsTb: '483d8b', DsTg: '2f4f4f', Dtrq: '-ced1', Dvt: '94-d3', ppnk: '1493', pskb: '-bfff', mgr: '696969', grb: '1e90ff', rbrc: 'b22222', rwht: 'af0', stg: '228b22', chs: '-ff', gnsb: 'dcdcdc', st: '8f8ff', g: 'd7-', gnr: 'daa520', gr: '808080', grn: '-8-0', grnw: 'adff2f', hnw: '0fff0', htpn: '69b4', nnr: 'cd5c5c', ng: '4b-82', vr: '0', khk: '0e68c', vnr: 'e6e6fa', nrb: '0f5', wngr: '7cfc-', mnch: 'acd', Lb: 'add8e6', Lcr: '08080', Lcn: 'e0ffff', Lgnr: 'afad2', Lgr: 'd3d3d3', Lgrn: '90ee90', Lpnk: 'b6c1', Lsmn: 'a07a', Lsgr: '20b2aa', Lskb: '87cefa', LsTg: '778899', Lstb: 'b0c4de', Lw: 'e0', m: '-ff-', mgrn: '32cd32', nn: 'af0e6', mgnt: '-ff', mrn: '8--0', mqm: '66cdaa', mmb: '--cd', mmrc: 'ba55d3', mmpr: '9370db', msg: '3cb371', mmsT: '7b68ee', '': '-fa9a', mtr: '48d1cc', mmvt: 'c71585', mnLb: '191970', ntc: '5fffa', mstr: 'e4e1', mccs: 'e4b5', vjw: 'dead', nv: '--80', c: 'df5e6', v: '808-0', vrb: '6b8e23', rng: 'a5-', rngr: '45-', rch: 'da70d6', pgnr: 'eee8aa', pgrn: '98fb98', ptrq: 'afeeee', pvtr: 'db7093', ppwh: 'efd5', pchp: 'dab9', pr: 'cd853f', pnk: 'c0cb', pm: 'dda0dd', pwrb: 'b0e0e6', prp: '8-080', cc: '663399', r: '--', sbr: 'bc8f8f', rb: '4169e1', sbrw: '8b4513', smn: 'a8072', nbr: '4a460', sgrn: '2e8b57', ssh: '5ee', snn: 'a0522d', svr: 'c0c0c0', skb: '87ceeb', sTb: '6a5acd', sTgr: '708090', snw: 'afa', n: '-ff7f', stb: '4682b4', tn: 'd2b48c', t: '-8080', thst: 'd8bfd8', tmT: '6347', trqs: '40e0d0', vt: 'ee82ee', whT: '5deb3', wht: '', hts: '5f5f5', w: '-', wgrn: '9acd32' };
+
+    function printNum(num) {
+        var decs = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;
+
+        var str = decs > 0 ? num.toFixed(decs).replace(/0+$/, '').replace(/\.$/, '') : num.toString();
+        return str || '0';
+    }
+
+    var Color = function () {
+        function Color(r, g, b, a) {
+            classCallCheck(this, Color);
+
+
+            var that = this;
+            function parseString(input) {
+
+                if (input.startsWith('hsl')) {
+                    var _input$match$map = input.match(/([\-\d\.e]+)/g).map(Number),
+                        _input$match$map2 = slicedToArray(_input$match$map, 4),
+                        h = _input$match$map2[0],
+                        s = _input$match$map2[1],
+                        l = _input$match$map2[2],
+                        _a = _input$match$map2[3];
+
+                    if (_a === undefined) {
+                        _a = 1;
+                    }
+
+                    h /= 360;
+                    s /= 100;
+                    l /= 100;
+                    that.hsla = [h, s, l, _a];
+                } else if (input.startsWith('rgb')) {
+                    var _input$match$map3 = input.match(/([\-\d\.e]+)/g).map(Number),
+                        _input$match$map4 = slicedToArray(_input$match$map3, 4),
+                        _r = _input$match$map4[0],
+                        _g = _input$match$map4[1],
+                        _b = _input$match$map4[2],
+                        _a2 = _input$match$map4[3];
+
+                    if (_a2 === undefined) {
+                        _a2 = 1;
+                    }
+
+                    that.rgba = [_r, _g, _b, _a2];
+                } else {
+                    if (input.startsWith('#')) {
+                        that.rgba = Color.hexToRgb(input);
+                    } else {
+                        that.rgba = Color.nameToRgb(input) || Color.hexToRgb(input);
+                    }
+                }
+            }
+
+            if (r === undefined) ; else if (Array.isArray(r)) {
+                this.rgba = r;
+            } else if (b === undefined) {
+                var color = r && '' + r;
+                if (color) {
+                    parseString(color.toLowerCase());
+                }
+            } else {
+                this.rgba = [r, g, b, a === undefined ? 1 : a];
+            }
+        }
+
+        createClass(Color, [{
+            key: 'printRGB',
+            value: function printRGB(alpha) {
+                var rgb = alpha ? this.rgba : this.rgba.slice(0, 3),
+                    vals = rgb.map(function (x, i) {
+                    return printNum(x, i === 3 ? 3 : 0);
+                });
+
+                return alpha ? 'rgba(' + vals + ')' : 'rgb(' + vals + ')';
+            }
+        }, {
+            key: 'printHSL',
+            value: function printHSL(alpha) {
+                var mults = [360, 100, 100, 1],
+                    suff = ['', '%', '%', ''];
+
+                var hsl = alpha ? this.hsla : this.hsla.slice(0, 3),
+                    vals = hsl.map(function (x, i) {
+                    return printNum(x * mults[i], i === 3 ? 3 : 1) + suff[i];
+                });
+
+                return alpha ? 'hsla(' + vals + ')' : 'hsl(' + vals + ')';
+            }
+        }, {
+            key: 'printHex',
+            value: function printHex(alpha) {
+                var hex = this.hex;
+                return alpha ? hex : hex.substring(0, 7);
+            }
+        }, {
+            key: 'rgba',
+            get: function get() {
+                if (this._rgba) {
+                    return this._rgba;
+                }
+                if (!this._hsla) {
+                    throw new Error('No color is set');
+                }
+
+                return this._rgba = Color.hslToRgb(this._hsla);
+            },
+            set: function set(rgb) {
+                if (rgb.length === 3) {
+                    rgb[3] = 1;
+                }
+
+                this._rgba = rgb;
+                this._hsla = null;
+            }
+        }, {
+            key: 'rgbString',
+            get: function get() {
+                return this.printRGB();
+            }
+        }, {
+            key: 'rgbaString',
+            get: function get() {
+                return this.printRGB(true);
+            }
+        }, {
+            key: 'hsla',
+            get: function get() {
+                if (this._hsla) {
+                    return this._hsla;
+                }
+                if (!this._rgba) {
+                    throw new Error('No color is set');
+                }
+
+                return this._hsla = Color.rgbToHsl(this._rgba);
+            },
+            set: function set(hsl) {
+                if (hsl.length === 3) {
+                    hsl[3] = 1;
+                }
+
+                this._hsla = hsl;
+                this._rgba = null;
+            }
+        }, {
+            key: 'hslString',
+            get: function get() {
+                return this.printHSL();
+            }
+        }, {
+            key: 'hslaString',
+            get: function get() {
+                return this.printHSL(true);
+            }
+        }, {
+            key: 'hex',
+            get: function get() {
+                var rgb = this.rgba,
+                    hex = rgb.map(function (x, i) {
+                    return i < 3 ? x.toString(16) : Math.round(x * 255).toString(16);
+                });
+
+                return '#' + hex.map(function (x) {
+                    return x.padStart(2, '0');
+                }).join('');
+            },
+            set: function set(hex) {
+                this.rgba = Color.hexToRgb(hex);
+            }
+        }], [{
+            key: 'hexToRgb',
+            value: function hexToRgb(input) {
+
+                var hex = (input.startsWith('#') ? input.slice(1) : input).replace(/^(\w{3})$/, '$1F').replace(/^(\w)(\w)(\w)(\w)$/, '$1$1$2$2$3$3$4$4').replace(/^(\w{6})$/, '$1FF');
+
+                if (!hex.match(/^([0-9a-fA-F]{8})$/)) {
+                    throw new Error('Unknown hex color; ' + input);
+                }
+
+                var rgba = hex.match(/^(\w\w)(\w\w)(\w\w)(\w\w)$/).slice(1).map(function (x) {
+                    return parseInt(x, 16);
+                });
+
+                rgba[3] = rgba[3] / 255;
+                return rgba;
+            }
+        }, {
+            key: 'nameToRgb',
+            value: function nameToRgb(input) {
+
+                var hash = input.toLowerCase().replace('at', 'T').replace(/[aeiouyldf]/g, '').replace('ght', 'L').replace('rk', 'D').slice(-5, 4),
+                    hex = colorNames[hash];
+                return hex === undefined ? hex : Color.hexToRgb(hex.replace(/\-/g, '00').padStart(6, 'f'));
+            }
+        }, {
+            key: 'rgbToHsl',
+            value: function rgbToHsl(_ref) {
+                var _ref2 = slicedToArray(_ref, 4),
+                    r = _ref2[0],
+                    g = _ref2[1],
+                    b = _ref2[2],
+                    a = _ref2[3];
+
+                r /= 255;
+                g /= 255;
+                b /= 255;
+
+                var max = Math.max(r, g, b),
+                    min = Math.min(r, g, b);
+                var h = void 0,
+                    s = void 0,
+                    l = (max + min) / 2;
+
+                if (max === min) {
+                    h = s = 0;
+                } else {
+                    var d = max - min;
+                    s = l > 0.5 ? d / (2 - max - min) : d / (max + min);
+                    switch (max) {
+                        case r:
+                            h = (g - b) / d + (g < b ? 6 : 0);break;
+                        case g:
+                            h = (b - r) / d + 2;break;
+                        case b:
+                            h = (r - g) / d + 4;break;
+                    }
+
+                    h /= 6;
+                }
+
+                return [h, s, l, a];
+            }
+        }, {
+            key: 'hslToRgb',
+            value: function hslToRgb(_ref3) {
+                var _ref4 = slicedToArray(_ref3, 4),
+                    h = _ref4[0],
+                    s = _ref4[1],
+                    l = _ref4[2],
+                    a = _ref4[3];
+
+                var r = void 0,
+                    g = void 0,
+                    b = void 0;
+
+                if (s === 0) {
+                    r = g = b = l;
+                } else {
+                    var hue2rgb = function hue2rgb(p, q, t) {
+                        if (t < 0) t += 1;
+                        if (t > 1) t -= 1;
+                        if (t < 1 / 6) return p + (q - p) * 6 * t;
+                        if (t < 1 / 2) return q;
+                        if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;
+                        return p;
+                    };
+
+                    var q = l < 0.5 ? l * (1 + s) : l + s - l * s,
+                        p = 2 * l - q;
+
+                    r = hue2rgb(p, q, h + 1 / 3);
+                    g = hue2rgb(p, q, h);
+                    b = hue2rgb(p, q, h - 1 / 3);
+                }
+
+                var rgba = [r * 255, g * 255, b * 255].map(Math.round);
+                rgba[3] = a;
+
+                return rgba;
+            }
+        }]);
+        return Color;
+    }();
+
+    var EventBucket = function () {
+        function EventBucket() {
+            classCallCheck(this, EventBucket);
+
+            this._events = [];
+        }
+
+        createClass(EventBucket, [{
+            key: 'add',
+            value: function add(target, type, handler) {
+                target.addEventListener(type, handler, false);
+                this._events.push({
+                    target: target,
+                    type: type,
+                    handler: handler
+                });
+            }
+        }, {
+            key: 'remove',
+            value: function remove(target, type, handler) {
+                this._events = this._events.filter(function (e) {
+                    var isMatch = true;
+                    if (target && target !== e.target) {
+                        isMatch = false;
+                    }
+                    if (type && type !== e.type) {
+                        isMatch = false;
+                    }
+                    if (handler && handler !== e.handler) {
+                        isMatch = false;
+                    }
+
+                    if (isMatch) {
+                        EventBucket._doRemove(e.target, e.type, e.handler);
+                    }
+                    return !isMatch;
+                });
+            }
+        }, {
+            key: 'destroy',
+            value: function destroy() {
+                this._events.forEach(function (e) {
+                    return EventBucket._doRemove(e.target, e.type, e.handler);
+                });
+                this._events = [];
+            }
+        }], [{
+            key: '_doRemove',
+            value: function _doRemove(target, type, handler) {
+                target.removeEventListener(type, handler, false);
+            }
+        }]);
+        return EventBucket;
+    }();
+
+    function parseHTML(htmlString) {
+
+        var div = document.createElement('div');
+        div.innerHTML = htmlString;
+        return div.firstElementChild;
+    }
+
+    function dragTrack(eventBucket, area, callback) {
+        var dragging = false;
+
+        function clamp(val, min, max) {
+            return Math.max(min, Math.min(val, max));
+        }
+
+        function onMove(e, info, starting) {
+            if (starting) {
+                dragging = true;
+            }
+            if (!dragging) {
+                return;
+            }
+
+            e.preventDefault();
+
+            var bounds = area.getBoundingClientRect(),
+                w = bounds.width,
+                h = bounds.height,
+                x = info.clientX,
+                y = info.clientY;
+
+            var relX = clamp(x - bounds.left, 0, w),
+                relY = clamp(y - bounds.top, 0, h);
+
+            callback(relX / w, relY / h);
+        }
+
+        function onMouse(e, starting) {
+            var button = e.buttons === undefined ? e.which : e.buttons;
+            if (button === 1) {
+                onMove(e, e, starting);
+            } else {
+                dragging = false;
+            }
+        }
+
+        function onTouch(e, starting) {
+            if (e.touches.length === 1) {
+                onMove(e, e.touches[0], starting);
+            } else {
+                dragging = false;
+            }
+        }
+
+        eventBucket.add(area, 'mousedown', function (e) {
+            onMouse(e, true);
+        });
+        eventBucket.add(area, 'touchstart', function (e) {
+            onTouch(e, true);
+        });
+        eventBucket.add(window, 'mousemove', onMouse);
+        eventBucket.add(area, 'touchmove', onTouch);
+        eventBucket.add(window, 'mouseup', function (e) {
+            dragging = false;
+        });
+        eventBucket.add(area, 'touchend', function (e) {
+            dragging = false;
+        });
+        eventBucket.add(area, 'touchcancel', function (e) {
+            dragging = false;
+        });
+    }
+
+    var BG_TRANSP = 'linear-gradient(45deg, lightgrey 25%, transparent 25%, transparent 75%, lightgrey 75%) 0 0 / 2em 2em,\n                   linear-gradient(45deg, lightgrey 25%,       white 25%,       white 75%, lightgrey 75%) 1em 1em / 2em 2em';
+    var HUES = 360;
+
+    var EVENT_KEY = 'keydown',
+        EVENT_CLICK_OUTSIDE = 'mousedown',
+        EVENT_TAB_MOVE = 'focusin';
+
+    function $(selector, context) {
+        return (context || document).querySelector(selector);
+    }
+
+    function stopEvent(e) {
+
+        e.preventDefault();
+        e.stopPropagation();
+    }
+    function onKey(bucket, target, keys, handler, stop) {
+        bucket.add(target, EVENT_KEY, function (e) {
+            if (keys.indexOf(e.key) >= 0) {
+                if (stop) {
+                    stopEvent(e);
+                }
+                handler(e);
+            }
+        });
+    }
+
+    var Picker = function () {
+        function Picker(options) {
+            classCallCheck(this, Picker);
+
+
+            this.settings = {
+
+                popup: 'right',
+                layout: 'default',
+                alpha: true,
+                editor: true,
+                editorFormat: 'hex',
+                cancelButton: false,
+                defaultColor: '#0cf'
+            };
+
+            this._events = new EventBucket();
+
+            this.onChange = null;
+
+            this.onDone = null;
+
+            this.onOpen = null;
+
+            this.onClose = null;
+
+            this.setOptions(options);
+        }
+
+        createClass(Picker, [{
+            key: 'setOptions',
+            value: function setOptions(options) {
+                var _this = this;
+
+                if (!options) {
+                    return;
+                }
+                var settings = this.settings;
+
+                function transfer(source, target, skipKeys) {
+                    for (var key in source) {
+                        if (skipKeys && skipKeys.indexOf(key) >= 0) {
+                            continue;
+                        }
+
+                        target[key] = source[key];
+                    }
+                }
+
+                if (options instanceof HTMLElement) {
+                    settings.parent = options;
+                } else {
+
+                    if (settings.parent && options.parent && settings.parent !== options.parent) {
+                        this._events.remove(settings.parent);
+                        this._popupInited = false;
+                    }
+
+                    transfer(options, settings);
+
+                    if (options.onChange) {
+                        this.onChange = options.onChange;
+                    }
+                    if (options.onDone) {
+                        this.onDone = options.onDone;
+                    }
+                    if (options.onOpen) {
+                        this.onOpen = options.onOpen;
+                    }
+                    if (options.onClose) {
+                        this.onClose = options.onClose;
+                    }
+
+                    var col = options.color || options.colour;
+                    if (col) {
+                        this._setColor(col);
+                    }
+                }
+
+                var parent = settings.parent;
+                if (parent && settings.popup && !this._popupInited) {
+
+                    var openProxy = function openProxy(e) {
+                        return _this.openHandler(e);
+                    };
+
+                    this._events.add(parent, 'click', openProxy);
+
+                    onKey(this._events, parent, [' ', 'Spacebar', 'Enter'], openProxy);
+
+                    this._popupInited = true;
+                } else if (options.parent && !settings.popup) {
+                    this.show();
+                }
+            }
+        }, {
+            key: 'openHandler',
+            value: function openHandler(e) {
+                if (this.show()) {
+
+                    e && e.preventDefault();
+
+                    this.settings.parent.style.pointerEvents = 'none';
+
+                    var toFocus = e && e.type === EVENT_KEY ? this._domEdit : this.domElement;
+                    setTimeout(function () {
+                        return toFocus.focus();
+                    }, 100);
+
+                    if (this.onOpen) {
+                        this.onOpen(this.colour);
+                    }
+                }
+            }
+        }, {
+            key: 'closeHandler',
+            value: function closeHandler(e) {
+                var event = e && e.type;
+                var doHide = false;
+
+                if (!e) {
+                    doHide = true;
+                } else if (event === EVENT_CLICK_OUTSIDE || event === EVENT_TAB_MOVE) {
+
+                    var knownTime = (this.__containedEvent || 0) + 100;
+                    if (e.timeStamp > knownTime) {
+                        doHide = true;
+                    }
+                } else {
+
+                    stopEvent(e);
+
+                    doHide = true;
+                }
+
+                if (doHide && this.hide()) {
+                    this.settings.parent.style.pointerEvents = '';
+
+                    if (event !== EVENT_CLICK_OUTSIDE) {
+                        this.settings.parent.focus();
+                    }
+
+                    if (this.onClose) {
+                        this.onClose(this.colour);
+                    }
+                }
+            }
+        }, {
+            key: 'movePopup',
+            value: function movePopup(options, open) {
+
+                this.closeHandler();
+
+                this.setOptions(options);
+                if (open) {
+                    this.openHandler();
+                }
+            }
+        }, {
+            key: 'setColor',
+            value: function setColor(color, silent) {
+                this._setColor(color, { silent: silent });
+            }
+        }, {
+            key: '_setColor',
+            value: function _setColor(color, flags) {
+                if (typeof color === 'string') {
+                    color = color.trim();
+                }
+                if (!color) {
+                    return;
+                }
+
+                flags = flags || {};
+                var c = void 0;
+                try {
+
+                    c = new Color(color);
+                } catch (ex) {
+                    if (flags.failSilently) {
+                        return;
+                    }
+                    throw ex;
+                }
+
+                if (!this.settings.alpha) {
+                    var hsla = c.hsla;
+                    hsla[3] = 1;
+                    c.hsla = hsla;
+                }
+                this.colour = this.color = c;
+                this._setHSLA(null, null, null, null, flags);
+            }
+        }, {
+            key: 'setColour',
+            value: function setColour(colour, silent) {
+                this.setColor(colour, silent);
+            }
+        }, {
+            key: 'show',
+            value: function show() {
+                var parent = this.settings.parent;
+                if (!parent) {
+                    return false;
+                }
+
+                if (this.domElement) {
+                    var toggled = this._toggleDOM(true);
+
+                    this._setPosition();
+
+                    return toggled;
+                }
+
+                var html = this.settings.template || '<div class="picker_wrapper" tabindex="-1"><div class="picker_arrow"></div><div class="picker_hue picker_slider"><div class="picker_selector"></div></div><div class="picker_sl"><div class="picker_selector"></div></div><div class="picker_alpha picker_slider"><div class="picker_selector"></div></div><div class="picker_editor"><input aria-label="Type a color name or hex value"/></div><div class="picker_sample"></div><div class="picker_done"><button>Ok</button></div><div class="picker_cancel"><button>Cancel</button></div></div>';
+                var wrapper = parseHTML(html);
+
+                this.domElement = wrapper;
+                this._domH = $('.picker_hue', wrapper);
+                this._domSL = $('.picker_sl', wrapper);
+                this._domA = $('.picker_alpha', wrapper);
+                this._domEdit = $('.picker_editor input', wrapper);
+                this._domSample = $('.picker_sample', wrapper);
+                this._domOkay = $('.picker_done button', wrapper);
+                this._domCancel = $('.picker_cancel button', wrapper);
+
+                wrapper.classList.add('layout_' + this.settings.layout);
+                if (!this.settings.alpha) {
+                    wrapper.classList.add('no_alpha');
+                }
+                if (!this.settings.editor) {
+                    wrapper.classList.add('no_editor');
+                }
+                if (!this.settings.cancelButton) {
+                    wrapper.classList.add('no_cancel');
+                }
+                this._ifPopup(function () {
+                    return wrapper.classList.add('popup');
+                });
+
+                this._setPosition();
+
+                if (this.colour) {
+                    this._updateUI();
+                } else {
+                    this._setColor(this.settings.defaultColor);
+                }
+                this._bindEvents();
+
+                return true;
+            }
+        }, {
+            key: 'hide',
+            value: function hide() {
+                return this._toggleDOM(false);
+            }
+        }, {
+            key: 'destroy',
+            value: function destroy() {
+                this._events.destroy();
+                if (this.domElement) {
+                    this.settings.parent.removeChild(this.domElement);
+                }
+            }
+        }, {
+            key: '_bindEvents',
+            value: function _bindEvents() {
+                var _this2 = this;
+
+                var that = this,
+                    dom = this.domElement,
+                    events = this._events;
+
+                function addEvent(target, type, handler) {
+                    events.add(target, type, handler);
+                }
+
+                addEvent(dom, 'click', function (e) {
+                    return e.preventDefault();
+                });
+
+                dragTrack(events, this._domH, function (x, y) {
+                    return that._setHSLA(x);
+                });
+
+                dragTrack(events, this._domSL, function (x, y) {
+                    return that._setHSLA(null, x, 1 - y);
+                });
+
+                if (this.settings.alpha) {
+                    dragTrack(events, this._domA, function (x, y) {
+                        return that._setHSLA(null, null, null, 1 - y);
+                    });
+                }
+
+                var editInput = this._domEdit;
+                {
+                    addEvent(editInput, 'input', function (e) {
+                        that._setColor(this.value, { fromEditor: true, failSilently: true });
+                    });
+
+                    addEvent(editInput, 'focus', function (e) {
+                        var input = this;
+
+                        if (input.selectionStart === input.selectionEnd) {
+                            input.select();
+                        }
+                    });
+                }
+
+                this._ifPopup(function () {
+
+                    var popupCloseProxy = function popupCloseProxy(e) {
+                        return _this2.closeHandler(e);
+                    };
+
+                    addEvent(window, EVENT_CLICK_OUTSIDE, popupCloseProxy);
+                    addEvent(window, EVENT_TAB_MOVE, popupCloseProxy);
+                    onKey(events, dom, ['Esc', 'Escape'], popupCloseProxy);
+
+                    var timeKeeper = function timeKeeper(e) {
+                        _this2.__containedEvent = e.timeStamp;
+                    };
+                    addEvent(dom, EVENT_CLICK_OUTSIDE, timeKeeper);
+
+                    addEvent(dom, EVENT_TAB_MOVE, timeKeeper);
+
+                    addEvent(_this2._domCancel, 'click', popupCloseProxy);
+                });
+
+                var onDoneProxy = function onDoneProxy(e) {
+                    _this2._ifPopup(function () {
+                        return _this2.closeHandler(e);
+                    });
+                    if (_this2.onDone) {
+                        _this2.onDone(_this2.colour);
+                    }
+                };
+                addEvent(this._domOkay, 'click', onDoneProxy);
+                onKey(events, dom, ['Enter'], onDoneProxy);
+            }
+        }, {
+            key: '_setPosition',
+            value: function _setPosition() {
+                var parent = this.settings.parent,
+                    elm = this.domElement;
+
+                if (parent !== elm.parentNode) {
+                    parent.appendChild(elm);
+                }
+
+                this._ifPopup(function (popup) {
+
+                    if (getComputedStyle(parent).position === 'static') {
+                        parent.style.position = 'relative';
+                    }
+
+                    var cssClass = popup === true ? 'popup_right' : 'popup_' + popup;
+
+                    ['popup_top', 'popup_bottom', 'popup_left', 'popup_right'].forEach(function (c) {
+
+                        if (c === cssClass) {
+                            elm.classList.add(c);
+                        } else {
+                            elm.classList.remove(c);
+                        }
+                    });
+
+                    elm.classList.add(cssClass);
+                });
+            }
+        }, {
+            key: '_setHSLA',
+            value: function _setHSLA(h, s, l, a, flags) {
+                flags = flags || {};
+
+                var col = this.colour,
+                    hsla = col.hsla;
+
+                [h, s, l, a].forEach(function (x, i) {
+                    if (x || x === 0) {
+                        hsla[i] = x;
+                    }
+                });
+                col.hsla = hsla;
+
+                this._updateUI(flags);
+
+                if (this.onChange && !flags.silent) {
+                    this.onChange(col);
+                }
+            }
+        }, {
+            key: '_updateUI',
+            value: function _updateUI(flags) {
+                if (!this.domElement) {
+                    return;
+                }
+                flags = flags || {};
+
+                var col = this.colour,
+                    hsl = col.hsla,
+                    cssHue = 'hsl(' + hsl[0] * HUES + ', 100%, 50%)',
+                    cssHSL = col.hslString,
+                    cssHSLA = col.hslaString;
+
+                var uiH = this._domH,
+                    uiSL = this._domSL,
+                    uiA = this._domA,
+                    thumbH = $('.picker_selector', uiH),
+                    thumbSL = $('.picker_selector', uiSL),
+                    thumbA = $('.picker_selector', uiA);
+
+                function posX(parent, child, relX) {
+                    child.style.left = relX * 100 + '%';
+                }
+                function posY(parent, child, relY) {
+                    child.style.top = relY * 100 + '%';
+                }
+
+                posX(uiH, thumbH, hsl[0]);
+
+                this._domSL.style.backgroundColor = this._domH.style.color = cssHue;
+
+                posX(uiSL, thumbSL, hsl[1]);
+                posY(uiSL, thumbSL, 1 - hsl[2]);
+
+                uiSL.style.color = cssHSL;
+
+                posY(uiA, thumbA, 1 - hsl[3]);
+
+                var opaque = cssHSL,
+                    transp = opaque.replace('hsl', 'hsla').replace(')', ', 0)'),
+                    bg = 'linear-gradient(' + [opaque, transp] + ')';
+
+                this._domA.style.background = bg + ', ' + BG_TRANSP;
+
+                if (!flags.fromEditor) {
+                    var format = this.settings.editorFormat,
+                        alpha = this.settings.alpha;
+
+                    var value = void 0;
+                    switch (format) {
+                        case 'rgb':
+                            value = col.printRGB(alpha);break;
+                        case 'hsl':
+                            value = col.printHSL(alpha);break;
+                        default:
+                            value = col.printHex(alpha);
+                    }
+                    this._domEdit.value = value;
+                }
+
+                this._domSample.style.color = cssHSLA;
+            }
+        }, {
+            key: '_ifPopup',
+            value: function _ifPopup(actionIf, actionElse) {
+                if (this.settings.parent && this.settings.popup) {
+                    actionIf && actionIf(this.settings.popup);
+                } else {
+                    actionElse && actionElse();
+                }
+            }
+        }, {
+            key: '_toggleDOM',
+            value: function _toggleDOM(toVisible) {
+                var dom = this.domElement;
+                if (!dom) {
+                    return false;
+                }
+
+                var displayStyle = toVisible ? '' : 'none',
+                    toggle = dom.style.display !== displayStyle;
+
+                if (toggle) {
+                    dom.style.display = displayStyle;
+                }
+                return toggle;
+            }
+        }]);
+        return Picker;
+    }();
+
+    {
+        var style = document.createElement('style');
+        style.textContent = '.picker_wrapper.no_alpha .picker_alpha{display:none}.picker_wrapper.no_editor .picker_editor{position:absolute;z-index:-1;opacity:0}.picker_wrapper.no_cancel .picker_cancel{display:none}.layout_default.picker_wrapper{display:flex;flex-flow:row wrap;justify-content:space-between;align-items:stretch;font-size:10px;width:25em;padding:.5em}.layout_default.picker_wrapper input,.layout_default.picker_wrapper button{font-size:1rem}.layout_default.picker_wrapper>*{margin:.5em}.layout_default.picker_wrapper::before{content:"";display:block;width:100%;height:0;order:1}.layout_default .picker_slider,.layout_default .picker_selector{padding:1em}.layout_default .picker_hue{width:100%}.layout_default .picker_sl{flex:1 1 auto}.layout_default .picker_sl::before{content:"";display:block;padding-bottom:100%}.layout_default .picker_editor{order:1;width:6.5rem}.layout_default .picker_editor input{width:100%;height:100%}.layout_default .picker_sample{order:1;flex:1 1 auto}.layout_default .picker_done,.layout_default .picker_cancel{order:1}.picker_wrapper{box-sizing:border-box;background:#f2f2f2;box-shadow:0 0 0 1px silver;cursor:default;font-family:sans-serif;color:#444;pointer-events:auto}.picker_wrapper:focus{outline:none}.picker_wrapper button,.picker_wrapper input{box-sizing:border-box;border:none;box-shadow:0 0 0 1px silver;outline:none}.picker_wrapper button:focus,.picker_wrapper button:active,.picker_wrapper input:focus,.picker_wrapper input:active{box-shadow:0 0 2px 1px #1e90ff}.picker_wrapper button{padding:.4em .6em;cursor:pointer;background-color:#f5f5f5;background-image:linear-gradient(0deg, gainsboro, transparent)}.picker_wrapper button:active{background-image:linear-gradient(0deg, transparent, gainsboro)}.picker_wrapper button:hover{background-color:#fff}.picker_selector{position:absolute;z-index:1;display:block;-webkit-transform:translate(-50%, -50%);transform:translate(-50%, -50%);border:2px solid #fff;border-radius:100%;box-shadow:0 0 3px 1px #67b9ff;background:currentColor;cursor:pointer}.picker_slider .picker_selector{border-radius:2px}.picker_hue{position:relative;background-image:linear-gradient(90deg, red, yellow, lime, cyan, blue, magenta, red);box-shadow:0 0 0 1px silver}.picker_sl{position:relative;box-shadow:0 0 0 1px silver;background-image:linear-gradient(180deg, white, rgba(255, 255, 255, 0) 50%),linear-gradient(0deg, black, rgba(0, 0, 0, 0) 50%),linear-gradient(90deg, #808080, rgba(128, 128, 128, 0))}.picker_alpha,.picker_sample{position:relative;background:linear-gradient(45deg, lightgrey 25%, transparent 25%, transparent 75%, lightgrey 75%) 0 0/2em 2em,linear-gradient(45deg, lightgrey 25%, white 25%, white 75%, lightgrey 75%) 1em 1em/2em 2em;box-shadow:0 0 0 1px silver}.picker_alpha .picker_selector,.picker_sample .picker_selector{background:none}.picker_editor input{font-family:monospace;padding:.2em .4em}.picker_sample::before{content:"";position:absolute;display:block;width:100%;height:100%;background:currentColor}.picker_arrow{position:absolute;z-index:-1}.picker_wrapper.popup{position:absolute;z-index:2;margin:1.5em}.picker_wrapper.popup,.picker_wrapper.popup .picker_arrow::before,.picker_wrapper.popup .picker_arrow::after{background:#f2f2f2;box-shadow:0 0 10px 1px rgba(0,0,0,.4)}.picker_wrapper.popup .picker_arrow{width:3em;height:3em;margin:0}.picker_wrapper.popup .picker_arrow::before,.picker_wrapper.popup .picker_arrow::after{content:"";display:block;position:absolute;top:0;left:0;z-index:-99}.picker_wrapper.popup .picker_arrow::before{width:100%;height:100%;-webkit-transform:skew(45deg);transform:skew(45deg);-webkit-transform-origin:0 100%;transform-origin:0 100%}.picker_wrapper.popup .picker_arrow::after{width:150%;height:150%;box-shadow:none}.popup.popup_top{bottom:100%;left:0}.popup.popup_top .picker_arrow{bottom:0;left:0;-webkit-transform:rotate(-90deg);transform:rotate(-90deg)}.popup.popup_bottom{top:100%;left:0}.popup.popup_bottom .picker_arrow{top:0;left:0;-webkit-transform:rotate(90deg) scale(1, -1);transform:rotate(90deg) scale(1, -1)}.popup.popup_left{top:0;right:100%}.popup.popup_left .picker_arrow{top:0;right:0;-webkit-transform:scale(-1, 1);transform:scale(-1, 1)}.popup.popup_right{top:0;left:100%}.popup.popup_right .picker_arrow{top:0;left:0}';
+        document.documentElement.firstElementChild.appendChild(style);
+
+        Picker.StyleElement = style;
+    }
+
+    function getChrColor$1(chr) {
+        if (chrColorMap$1[chr]) {
+            return chrColorMap$1[chr];
+        } else if (chrColorMap$1["chr" + chr]) {
+            const color = chrColorMap$1["chr" + chr];
+            chrColorMap$1[chr] = color;
+            return color;
+        } else {
+            const color = randomRGB();
+            chrColorMap$1[chr] = color;
+            return color;
+        }
+    }
+
+    function randomRGB (min, max) {
+
+        var r = Math.round(Math.random() * 255).toString(10);
+        var g = Math.round(Math.random() * 255).toString(10);
+        var b = Math.round(Math.random() * 255).toString(10);
+        return "rgb(" + r + "," + g + "," + b + ")";
+    }
+
+    const chrColorMap$1 = {
+        "chrX": "rgb(204, 153, 0)",
+        "chrY": "rgb(153, 204, 0",
+        "chrUn": "rgb(50, 50, 50)",
+        "chr1": "rgb(80, 80, 255)",
+        "chrI": "rgb(139, 155, 187)",
+        "chr2": "rgb(206, 61, 50)",
+        "chrII": "rgb(206, 61, 50)",
+        "chr2a": "rgb(216, 71, 60)",
+        "chr2b": "rgb(226, 81, 70)",
+        "chr3": "rgb(116, 155, 88)",
+        "chrIII": "rgb(116, 155, 88)",
+        "chr4": "rgb(240, 230, 133)",
+        "chrIV": "rgb(240, 230, 133)",
+        "chr5": "rgb(70, 105, 131)",
+        "chr6": "rgb(186, 99, 56)",
+        "chr7": "rgb(93, 177, 221)",
+        "chr8": "rgb(128, 34, 104)",
+        "chr9": "rgb(107, 215, 107)",
+        "chr10": "rgb(213, 149, 167)",
+        "chr11": "rgb(146, 72, 34)",
+        "chr12": "rgb(131, 123, 141)",
+        "chr13": "rgb(199, 81, 39)",
+        "chr14": "rgb(213, 143, 92)",
+        "chr15": "rgb(122, 101, 165)",
+        "chr16": "rgb(228, 175, 105)",
+        "chr17": "rgb(59, 27, 83)",
+        "chr18": "rgb(205, 222, 183)",
+        "chr19": "rgb(97, 42, 121)",
+        "chr20": "rgb(174, 31, 99)",
+        "chr21": "rgb(231, 199, 111)",
+        "chr22": "rgb(90, 101, 94)",
+        "chr23": "rgb(204, 153, 0)",
+        "chr24": "rgb(153, 204, 0)",
+        "chr25": "rgb(51, 204, 0)",
+        "chr26": "rgb(0, 204, 51)",
+        "chr27": "rgb(0, 204, 153)",
+        "chr28": "rgb(0, 153, 204)",
+        "chr29": "rgb(10, 71, 255)",
+        "chr30": "rgb(71, 117, 255)",
+        "chr31": "rgb(255, 194, 10)",
+        "chr32": "rgb(255, 209, 71)",
+        "chr33": "rgb(153, 0, 51)",
+        "chr34": "rgb(153, 26, 0)",
+        "chr35": "rgb(153, 102, 0)",
+        "chr36": "rgb(128, 153, 0)",
+        "chr37": "rgb(51, 153, 0)",
+        "chr38": "rgb(0, 153, 26)",
+        "chr39": "rgb(0, 153, 102)",
+        "chr40": "rgb(0, 128, 153)",
+        "chr41": "rgb(0, 51, 153)",
+        "chr42": "rgb(26, 0, 153)",
+        "chr43": "rgb(102, 0, 153)",
+        "chr44": "rgb(153, 0, 128)",
+        "chr45": "rgb(214, 0, 71)",
+        "chr46": "rgb(255, 20, 99)",
+        "chr47": "rgb(0, 214, 143)",
+        "chr48": "rgb(20, 255, 177)",
+    };
+
+    class ChordSetManager {
+
+        constructor(config) {
+            this.tracks = [];
+            this.chordSets = [];
+        }
+
+        addChordSet(chordSet) {
+
+            // If a chord set with this name exists replace it (same track, same region)
+            this.chordSets = this.chordSets.filter(g => g.name !== chordSet.name);
+            this.chordSets.push(chordSet);
+
+            let track = this.tracks.find(t => chordSet.trackName === t.name);
+            if (track) {
+                track.chordSets = track.chordSets.filter(cs => cs.name !== chordSet.name);
+                track.chordSets.push(chordSet);
+            }
+            if (!track) {
+                track = new IGVTrack(chordSet);
+                this.tracks.push(track);
+            }
+        }
+
+        clearChords() {
+            this.tracks = [];
+            this.chordSets = [];
+        }
+
+        getTrack(name) {
+            return this.tracks.find(t => name === t.name)
+        }
+
+        getChordSet(name) {
+            return this.chordSets.find(cs => name === cs.name)
+        }
+
+    }
+
+    class IGVTrack {
+        constructor(chordSet) {
+            this.name = chordSet.trackName;
+            this.color = chordSet.trackColor;
+            this.visible = true;
+            this.chordSets = [chordSet];
+            this.id = guid$1();
+        }
+
+        get chords() {
+            if (this.chordSets.length === 1) {
+                return this.chordSets[0].chords
+            }
+            const chords = [];
+            for (let cs of this.chordSets) {
+                for (let c of cs.chords) {
+                    chords.push(c);
+                }
+            }
+            return chords
+        }
+    }
+
+
+    function guid$1() {
+        return ("0000" + (Math.random() * Math.pow(36, 4) << 0).toString(36)).slice(-4)
+    }
+
+    const EXP5 = Math.exp(5);
+
+    class CircularView {
+
+        static isInstalled() {
+            return window["JBrowseReactCircularGenomeView"] !== undefined && window["React"] !== undefined && window["ReactDOM"] !== undefined
+        }
+
+        /**
+         * Create a new CircularView
+         *
+         * @param parent
+         * @param config - configuration options
+         *   {
+         *       assembly: {name: string, id: string, chromosomes: [{name: string, bpLength: integer, color: string}]
+         *       onChordClick: function called upon chord click with chord feature as argument
+         *   }
+         */
+        constructor(parent, config) {
+
+            config = config || {};
+            this.config = config;
+
+            if (CircularView.isInstalled()) {
+
+                this.parent = parent;
+                this.groupByTrack = config.groupByTrack === true;
+                this.chordManager = new ChordSetManager(config);
+
+                // wrapper for toolbar and circular-view container
+                const wrapper = document.createElement('div');
+                wrapper.className = 'igv-circview-container';
+                parent.appendChild(wrapper);
+
+                // toolbar
+                this.createControls(wrapper);
+                this.resetControlPanel();
+
+                // circular view container
+                const element = document.createElement('div');
+                element.className = 'igv-circview-circular-genome-view';
+                wrapper.appendChild(element);
+                this.container = element;
+
+                if (config.assembly) {
+                    this.setAssembly(config.assembly);
+                }
+
+                this.width = config.width || 500;
+                this.height = config.height || 500;
+                this.setSize(this.width, this.height);
+
+            } else {
+                console.error("JBrowse circular view is not installed");
+            }
+        }
+
+        createControls(parent) {
+
+            // toolbar
+            const toolbarDiv = document.createElement('div');
+            toolbarDiv.className = 'igv-circview-toolbar';
+            parent.appendChild(toolbarDiv);
+            this.toolbar = toolbarDiv;
+
+            // control panel
+            const controlPanelDiv = document.createElement('div');
+            controlPanelDiv.className = 'igv-circview-track-panel';
+            parent.appendChild(controlPanelDiv);
+            this.controlPanel = controlPanelDiv;
+            this.controlPanel.style.display = 'none';
+
+
+            // toolbar button container - Track Options - Clear All
+            const buttonContainer = document.createElement('div');
+            buttonContainer.className = 'igv-circview-toolbar-button-container';
+            this.toolbar.appendChild(buttonContainer);
+
+            // Show Controls
+            this.showControlsButton = document.createElement('div');
+            this.showControlsButton.className = 'igv-circview-button';
+            buttonContainer.appendChild(this.showControlsButton);
+            this.showControlsButton.innerText = 'none' === this.controlPanel.style.display ? 'Show Controls' : 'Hide Controls';
+            this.showControlsButton.addEventListener('click', (event) => {
+                const panelRows = this.controlPanel.querySelectorAll('div');
+                if (panelRows.length > 0) {
+                    if ('none' === this.controlPanel.style.display) {
+                        this.controlPanel.style.display = 'flex';
+                        event.target.innerText = 'Hide Controls';
+                    } else {
+                        this.controlPanel.style.display = 'none';
+                        event.target.innerText = 'Show Controls';
+                    }
+                }
+            });
+
+            // Clear All
+            let button = document.createElement('div');
+            button.className = 'igv-circview-button';
+            buttonContainer.appendChild(button);
+            button.innerText = 'Clear All';
+            button.addEventListener('click', () => {
+                this.clearChords();
+            });
+
+            // Close
+            if (false !== this.config.showCloseButton) {
+                button = document.createElement('div');
+                button.className = 'igv-circview-button';
+                buttonContainer.appendChild(button);
+                button.innerText = 'Close';
+                button.addEventListener('click', () => {
+                    this.visible = false;
+                });
+            }
+        }
+
+        resetControlPanel() {
+            this.controlPanel.innerHTML = '';
+            this.controlPanel.appendChild(this.createGroupByCB());
+            const chordSets = this.groupByTrack ? this.chordManager.tracks : this.chordManager.chordSets;
+            for(let cs of chordSets) {
+                this.addToControlPanel(cs);
+            }
+        }
+
+        createGroupByCB() {
+            const groupByCB = document.createElement('input');
+            groupByCB.type = 'checkbox';
+            groupByCB.id = 'groupByCB';
+            groupByCB.style.width = '1.4em';
+            groupByCB.style.height = '1.4em';
+            groupByCB.checked = this.groupByTrack;
+
+            groupByCB.onclick = (evt) => {
+                this.groupByTrack = evt.target.checked;
+                this.resetControlPanel();
+                this.render();
+            };
+
+            const groupByLabel = document.createElement('label');
+            groupByLabel.for = 'groupByCB';
+            groupByLabel.innerText = 'Group by track';
+            groupByLabel.style.color = 'black';
+            groupByLabel.style.paddingLeft = '10px';
+            const trackPanelRow = document.createElement('div');
+            trackPanelRow.style.width = '100%';
+            trackPanelRow.style.paddingTop = '5px';
+            trackPanelRow.style.paddingBottom = '5px';
+            trackPanelRow.style.background = 'rgb(216, 230, 234)';
+            trackPanelRow.appendChild(groupByCB);
+            trackPanelRow.appendChild(groupByLabel);
+            return trackPanelRow
+        }
+
+        addToControlPanel(chordSet) {
+
+            // single track row - container for hide-button | color-picker-swatch | track-name
+            const row = document.createElement('div');
+            this.controlPanel.appendChild(row);
+
+
+            // track hide|show
+            const hideShowButton = document.createElement('div');
+            hideShowButton.className = 'igv-circview-button';
+            row.appendChild(hideShowButton);
+            hideShowButton.innerText = true === chordSet.visible ? 'Hide' : 'Show';
+            hideShowButton.addEventListener('click', event => {
+                if (true === chordSet.visible) {
+                    this.hideChordSet(chordSet.name);
+                    event.target.innerText = "Show";
+                } else {
+                    this.showChordSet(chordSet.name);
+                    event.target.innerText = "Hide";
+                }
+            });
+
+            // The alpha range slider.  Create this here so we can reference it from the color picker
+            const alphaSlider = document.createElement('input');
+            const valueToAlpha = (value) => Math.exp(value / 200) / EXP5;
+            const alphaToValue = (alpha) => 200 * Math.log(alpha * EXP5);
+
+            // color
+            const colorPickerButton = document.createElement('div');
+            colorPickerButton.className = 'igv-circview-button';
+            colorPickerButton.innerHTML = '&nbsp;&nbsp;&nbsp;&nbsp;';   // <- important for button to size properly
+            row.appendChild(colorPickerButton);
+            colorPickerButton.style.backgroundColor = setAlpha(chordSet.color, 1);
+            const pickerConfig =
+                {
+                    parent: colorPickerButton,
+                    popup: 'right',
+                    editorFormat: 'rgb',
+                    color: chordSet.color,
+                    onChange: ({rgbaString}) => {
+                        colorPickerButton.style.backgroundColor = setAlpha(rgbaString, 1);
+                        this.setColor(chordSet.name, rgbaString);
+                        alphaSlider.value = alphaToValue(getAlpha(chordSet.color));
+                    }
+                };
+            const picker = new Picker(pickerConfig);
+
+            // alpha transparency
+            alphaSlider.setAttribute('title', 'Adjust transparency of arcs');
+            alphaSlider.type = 'range';
+            //alphaSlider.className = 'igv-circview-alpha-slider'
+            alphaSlider.style.width = '100px';
+            alphaSlider.style.marginRight = '10px';
+            alphaSlider.setAttribute('class', 'range');
+            alphaSlider.setAttribute('min', '0');
+            alphaSlider.setAttribute('max', '1000');
+            alphaSlider.value = alphaToValue(getAlpha(chordSet.color));
+            alphaSlider.oninput = () => {
+                const v = valueToAlpha(alphaSlider.value);
+                this.setColor(chordSet.name, setAlpha(chordSet.color, v));
+                picker.setColor(chordSet.color);
+            };
+            row.appendChild(alphaSlider);
+
+            // track name
+            const trackNameDive = document.createElement('div');
+            trackNameDive.style.color = 'black';
+            row.appendChild(trackNameDive);
+            trackNameDive.innerText = trackNameDive.title = chordSet.name;
+
+        }
+
+        /**
+         * Reset view with a new set of chromosomes.
+         *
+         * @param igvGenome {name: string, id: string, chromosomes: [{name: string, bpLength: integer, color: string}
+         */
+        setAssembly(igvGenome) {
+
+            const id = this.genomeId || guid();
+
+            if (this.genomeId === id) {
+                return
+            }
+            this.chordManager.clearChords();
+            this.genomeId = id;
+            this.chrNames = new Set(igvGenome.chromosomes.map(chr => shortChrName$1(chr.name)));
+
+            const regions = [];
+            const colors = [];
+            for (let chr of igvGenome.chromosomes) {
+                const shortName = shortChrName$1(chr.name);
+                colors.push(chr.color || getChrColor$1(shortName));
+                regions.push(
+                    {
+                        refName: shortName,
+                        uniqueId: shortName,
+                        start: 0,
+                        end: chr.bpLength
+                    }
+                );
+            }
+
+            this.assembly = {
+                name: igvGenome.name,
+                sequence: {
+                    trackId: id,
+                    type: 'ReferenceSequenceTrack',
+                    adapter: {
+                        type: 'FromConfigSequenceAdapter',
+                        features: regions,
+                    },
+                },
+                refNameColors: colors
+            };
+
+            this.render();
+
+        }
+
+        /**
+         * Append or replace current set of chords to the global set or a specific track.
+         *
+         * @param newChords array of chord feature objects.  Example:
+         * [
+         *   {
+         *     "uniqueId": "chr1:129763372-129763376_chr1:129806775-129806790",
+         *     "color": "rgba(0, 0, 255, 0.1)",
+         *     "refName": "1",
+         *     "start": 129763372,
+         *     "end": 129763376,
+         *     "mate": {
+         *       "refName": "2",
+         *       "start": 129806775,
+         *       "end": 129806790
+         *     }
+         *   }
+         * ]
+         * @param options {
+         *     name: string,    // Track name
+         *     color: string,   // Track color
+         *     append: boolean  // Replace or append chords to current set.  Default is append (true)
+         * }
+         */
+
+        addChords(newChords, options = {}) {
+
+            const tmp = options.name || options.track || "*";
+            const trackName = tmp.split(' ')[0].replaceAll("%20", " ");
+            const chordSetName = tmp.replaceAll("%20", " ");
+
+            const chordSet =  {
+                name: chordSetName,
+                trackName: trackName,
+                chords: newChords,
+                color: options.color || "black",
+                trackColor: options.trackColor || options.color || "black",
+                visible: true,
+                id: options.id || guid()
+            };
+
+            this.chordManager.addChordSet(chordSet);
+
+            this.resetControlPanel();
+
+            this.render();
+        }
+
+        /**
+         * Set the nominal size of the view in pixels.  Size is reduced some aribtrary amount to account for borders and margins
+         */
+        setSize(width, height) {
+
+            height = height || width;
+
+            this.width = width;
+            this.height = height;
+            if (this.viewState) {
+                const view = this.viewState.session.view;
+                view.setWidth(width);
+                view.setHeight(height /* this is the height of the area inside the border in pixels */);
+                view.setBpPerPx(view.minBpPerPx);
+            }
+        }
+
+        getSize() {
+            return Math.min(this.width, this.height)
+        }
+
+        clearChords() {
+            //this.tracks = []
+            this.chordManager.clearChords();
+            this.resetControlPanel();
+            this.render();
+        }
+
+        clearSelection() {
+            this.viewState.pluginManager.rootModel.session.clearSelection();
+        }
+
+        /**
+         * Deprecated, use "visible" property
+         */
+        show() {
+            this.parent.style.display = 'block';
+        }
+
+        /**
+         * Deprecated, use "visible" property
+         */
+        hide() {
+            this.parent.style.display = 'none';
+        }
+
+        get visible() {
+            return this.parent.style.display !== 'none'
+        }
+
+        set visible(isVisible) {
+            this.parent.style.display = isVisible ? 'block' : 'none';
+        }
+
+        hideChordSet(trackName) {
+            let cs = this.getChordSet(trackName);
+            if (cs) {
+                cs.visible = false;
+                this.render();
+            } else {
+                console.warn(`No track with name: ${name}`);
+            }
+        }
+
+        showChordSet(name) {
+            let cs = this.getChordSet(name);
+            if (cs) {
+                cs.visible = true;
+                this.render();
+            } else {
+                console.warn(`No track with name: ${name}`);
+            }
+        }
+
+        // showTrack(trackID) {
+        //     let idx = this.tracks.findIndex(t => trackID === t.id)
+        //     if (idx >= 0) {
+        //         const track = this.tracks[idx]
+        //         track.visible = true
+        //         this.tracks.splice(idx, 1)   // Change z-order
+        //         this.tracks.push(track)
+        //         this.render()
+        //     } else {
+        //         console.warn(`No track with name: ${name}`)
+        //     }
+        // }
+
+        // TODO -- remove corresponding row from track panel
+        deleteTrack(trackID) {
+            let idx = this.tracks.findIndex(t => trackID === t.name);
+            if (idx >= 0) {
+                this.tracks.splice(idx, 1);
+            }
+            this.render();
+        }
+
+        getChordSet(name) {
+            return this.groupByTrack ? this.chordManager.getTrack(name) : this.chordManager.getChordSet(name)
+        }
+
+        setColor(name, color) {
+            const t = this.getChordSet(name);
+            if (t) {
+                t.color = color;
+                const trackID = t.id;
+                for (let jbrowseTrack of this.viewState.config.tracks) {
+                    if (trackID === jbrowseTrack.trackId) {
+                        jbrowseTrack.displays[0].renderer.strokeColor.set(color);
+                        break
+                    }
+                }
+            }
+        }
+
+        /**
+         * The main render function.  Render here means build the React DOM.  Trying to change react state dynamically
+         * has been buggy, so we completely rebuild the DOM ("render") on any state change.
+         */
+        render() {
+
+            const {
+                createViewState,
+                JBrowseCircularGenomeView,
+            } = JBrowseReactCircularGenomeView;
+
+            // Remove all children from possible previous renders.  React might do this for us when we render, but just in case.
+            ReactDOM.unmountComponentAtNode(this.container);
+
+            const visibleChordSets =
+                (this.groupByTrack ? this.chordManager.tracks : this.chordManager.chordSets).filter(t => t.visible);
+
+            const jbrowseTracks = [];
+            const colors = [];
+
+            for (let chordSet of visibleChordSets) {
+
+                jbrowseTracks.push({
+                    trackId: chordSet.id,
+                    name: chordSet.name,
+                    assemblyNames: ['forIGV'],
+                    type: 'VariantTrack',
+                    adapter: {
+                        type: 'FromConfigAdapter',
+                        features: chordSet.chords,
+                    }
+                });
+                colors.push(chordSet.color);
+            }
+
+            this.viewState = createViewState({
+                assembly: this.assembly,
+                tracks: jbrowseTracks,
+            });
+
+            // Set view colors
+            for (let i = 0; i < visibleChordSets.length; i++) {
+                this.viewState.config.tracks[i].displays[0].renderer.strokeColor.set(colors[i]);
+                //this.viewState.config.tracks[i].displays[0].renderer.strokeColor.set("jexl:get(feature, 'color') || 'black'");
+                //this.viewState.config.tracks[i].displays[0].renderer.strokeColorSelected.set("jexl:get(feature, 'highlightColor') || 'red'");
+            }
+
+            this.element = React.createElement(JBrowseCircularGenomeView, {viewState: this.viewState});
+            this.setSize(this.width, this.height);
+
+            ReactDOM.render(this.element, this.container);
+
+            const onChordClick = this.config.onChordClick || defaultOnChordClick;
+            for (let i = 0; i < visibleChordSets.length; i++) {
+                this.viewState.session.view.showTrack(this.viewState.config.tracks[i].trackId);
+                if (onChordClick) {
+                    this.viewState.pluginManager.jexl.addFunction('onChordClick', onChordClick);
+                    this.viewState.config.tracks[i].displays[0].onChordClick.set(
+                        'jexl:onChordClick(feature, track, pluginManager)'
+                    );
+                }
+            }
+        }
+    }
+
+    function setAlpha(rgba, alpha) {
+        const [a, b, c, ignore] = rgba.split(','); // rgba(r g b alpha)
+        return `${a},${b},${c},${alpha})`
+    }
+
+    function getAlpha(rgba) {
+        if (rgba.startsWith("rgba(")) {
+            return Number(rgba.split(',')[3].replace(')', ''))
+        } else {
+            return 1
+        }
+    }
+
+    function shortChrName$1(chrName) {
+        return chrName.startsWith("chr") ? chrName.substring(3) : chrName
+    }
+
+    function defaultOnChordClick(feature, chordTrack, pluginManager) {
+        console.log(feature);
+    }
+
+    function guid() {
+        return ("0000" + (Math.random() * Math.pow(36, 4) << 0).toString(36)).slice(-4)
+    }
+
+    function embedCSS$1() {
+
+        const css =  '.igv-circview-container {\n  width: fit-content;\n  height: fit-content;\n  box-sizing: content-box;\n  color: dimgray;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 12px;\n  background-color: white;\n  border-color: dimgray;\n  border-style: solid;\n  border-width: thin;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n}\n\n.igv-circview-toolbar {\n  position: relative;\n  width: 100%;\n  height: 32px;\n  background-color: lightgrey;\n  border-bottom-style: solid;\n  border-bottom-color: dimgray;\n  border-bottom-width: thin;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n}\n\n.igv-circview-toolbar-button-container {\n  height: 100%;\n  width: fit-content;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-circview-toolbar-button-container > div {\n  margin: 4px;\n}\n\n.igv-circview-track-panel {\n  z-index: 1024;\n  position: absolute;\n  top: 33px;\n  left: 0;\n  width: 100%;\n  height: fit-content;\n  border-bottom-style: solid;\n  border-bottom-color: dimgray;\n  border-bottom-width: thin;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n}\n.igv-circview-track-panel > div {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-circview-track-panel > div > div {\n  margin: 4px;\n}\n\n.igv-circview-swatch-button {\n  cursor: pointer;\n  padding: 5px;\n  width: 8px;\n  height: 8px;\n  border: 1px solid #8d8b8b;\n  border-radius: 16px;\n}\n\n.igv-circview-button {\n  cursor: pointer;\n  padding: 5px;\n  color: #444;\n  vertical-align: middle;\n  text-align: center;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 12px;\n  border: 1px solid #8d8b8b;\n  border-radius: 4px;\n  background: #efefef;\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.2);\n}\n\n.igv-circview-button:hover {\n  background: #efefef;\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.6);\n}\n\n.igv-circview-button:active {\n  color: #007bff;\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.6);\n}\n\n/*# sourceMappingURL=circular-view.css.map */\n';
+
+        const style = document.createElement('style');
+        style.setAttribute('type', 'text/css');
+        style.innerHTML = css;
+        document.head.insertBefore(style, document.head.childNodes[ document.head.childNodes.length - 1 ]);
+    }
+
+    if(typeof document !== 'undefined') {
+
+        if (!stylesheetExists("circular-view.css")) {
+            embedCSS$1();
+        }
+
+        function stylesheetExists(stylesheetName) {
+            for (let ss of document.styleSheets) {
+                ss = ss.href ? ss.href.replace(/^.*[\\\/]/, '') : '';
+                if (ss === stylesheetName) {
+                    return true;
+                }
+            }
+            return false;
+        }
+    }
+
+    /**
+     * The minimum length for a VCF structural variant.  VCF records < this length are ignored in the circular view
+     * @type {number}
+     */
+    const MINIMUM_SV_LENGTH = 1000000;
+
+    const shortChrName = (chrName) => {
+        return chrName.startsWith("chr") ? chrName.substring(3) : chrName
+    };
+
+    const makePairedAlignmentChords = (alignments) => {
+
+        const chords = [];
+        for (let a of alignments) {
+
+            if(a.paired) {
+                if(a.firstAlignment && a.secondAlignment) {
+                    chords.push({
+                        uniqueId: a.readName,
+                        refName: shortChrName(a.firstAlignment.chr),
+                        start: a.firstAlignment.start,
+                        end: a.firstAlignment.end,
+                        mate: {
+                            refName: shortChrName(a.secondAlignment.chr),
+                            start: a.secondAlignment.start,
+                            end: a.secondAlignment.end,
+                        }
+                    });
+                }
+            }
+            else {
+                const mate = a.mate;
+                if (mate && mate.chr && mate.position) {
+                    chords.push({
+                        uniqueId: a.readName,
+                        refName: shortChrName(a.chr),
+                        start: a.start,
+                        end: a.end,
+                        mate: {
+                            refName: shortChrName(mate.chr),
+                            start: mate.position - 1,
+                            end: mate.position,
+                        }
+                    });
+                }
+            }
+        }
+        return chords
+    };
+
+    const makeSupplementalAlignmentChords = (alignments) => {
+
+        const makeChords = (a) => {
+            const sa = a.tags()['SA'];
+            const supAl = createSupplementaryAlignments(sa);
+            let n = 0;
+            for (let s of supAl) {
+                if (s.start !== a.start) {
+                    chords.push({
+                        uniqueId: `${a.readName}_${n++}`,
+                        refName: shortChrName(a.chr),
+                        start: a.start,
+                        end: a.end,
+                        mate: {
+                            refName: shortChrName(s.chr),
+                            start: s.start,
+                            end: s.start + s.lenOnRef
+                        }
+                    });
+                }
+            }
+        };
+
+        const chords = [];
+        for (let a of alignments) {
+            if(a.paired) {
+                makeChords(a.firstAlignment);
+                if(a.secondAlignment) {
+                    makeChords(a.secondAlignment);
+                }
+            } else {
+                makeChords(a);
+            }
+        }
+        return chords
+    };
+
+    const makeBedPEChords = (features) => {
+
+        return features.map(v => {
+
+            // If v is a whole-genome feature, get the true underlying variant.
+            const f = v._f || v;
+
+            return {
+                uniqueId: `${f.chr1}:${f.start1}-${f.end1}_${f.chr2}:${f.start2}-${f.end2}`,
+                refName: shortChrName(f.chr1),
+                start: f.start1,
+                end: f.end1,
+                mate: {
+                    refName: shortChrName(f.chr2),
+                    start: f.start2,
+                    end: f.end2,
+                }
+            }
+        })
+    };
+
+
+    const makeVCFChords = (features) => {
+
+        const svFeatures = features.filter(v => {
+            const f = v._f || v;
+            const isLargeEnough = f.info && f.info.CHR2 && f.info.END &&
+                (f.info.CHR2 !== f.chr || Math.abs(Number.parseInt(f.info.END) - f.pos) > MINIMUM_SV_LENGTH);
+            return isLargeEnough
+        });
+        return svFeatures.map(v => {
+
+            // If v is a whole-genome feature, get the true underlying variant.
+            const f = v._f || v;
+
+            const pos2 = Number.parseInt(f.info.END);
+            const start2 = pos2 - 100;
+            const end2 = pos2 + 100;
+
+            return {
+                uniqueId: `${f.chr}:${f.start}-${f.end}_${f.info.CHR2}:${f.info.END}`,
+                refName: shortChrName(f.chr),
+                start: f.start,
+                end: f.end,
+                mate: {
+                    refName: shortChrName(f.info.CHR2),
+                    start: start2,
+                    end: end2
+                }
+            }
+        })
+    };
+
+    function makeCircViewChromosomes(genome) {
+        const regions = [];
+        const colors = [];
+        for (let chrName of genome.wgChromosomeNames) {
+            const chr = genome.getChromosome(chrName);
+            colors.push(getChrColor(chr.name));
+            regions.push(
+                {
+                    name: chr.name,
+                    bpLength: chr.bpLength
+                }
+            );
+        }
+        return regions
+    }
+
+    function sendChords(chords, track, refFrame, alpha) {
+
+        const baseColor =  track.color || 'rgb(0,0,255)';
+
+        const chordSetColor = IGVColor.addAlpha("all" === refFrame.chr ? baseColor : getChrColor(refFrame.chr), alpha);
+        const trackColor = IGVColor.addAlpha(baseColor, alpha);
+
+        // name the chord set to include locus and filtering information
+        const encodedName = track.name.replaceAll(' ', '%20');
+        const chordSetName = "all" === refFrame.chr ? encodedName :
+            `${encodedName}  ${refFrame.chr}:${refFrame.start}-${refFrame.end}`;
+        track.browser.circularView.addChords(chords, {track: chordSetName, color: chordSetColor, trackColor: trackColor});
+
+        // show circular view if hidden
+        if(!track.browser.circularViewVisible) track.browser.circularViewVisible = true;
+
+    }
+
+
+    function createCircularView(el, browser) {
+
+        const circularView = new CircularView(el, {
+
+            onChordClick: (feature, chordTrack, pluginManager) => {
+
+                const f1 = feature.data;
+                const f2 = f1.mate;
+                addFrameForFeature(f1);
+                addFrameForFeature(f2);
+
+                function addFrameForFeature(feature) {
+
+                    feature.chr = browser.genome.getChromosomeName(feature.refName);
+                    let frameFound = false;
+                    for (let referenceFrame of browser.referenceFrameList) {
+                        const l = Locus.fromLocusString(referenceFrame.getLocusString());
+                        if (l.contains(feature)) {
+                            frameFound = true;
+                            break
+                        } else if (l.overlaps(feature)) {
+                            referenceFrame.extend(feature);
+                            frameFound = true;
+                            break
+                        }
+                    }
+                    if (!frameFound) {
+                        const flanking = 2000;
+                        const center = (feature.start + feature.end) / 2;
+                        browser.addMultiLocusPanel(feature.chr, center - flanking, center + flanking);
+
+                    }
+                }
+            }
+        });
+
+        return circularView
+    }
+
+    class PairedEndStats {
+
+        constructor(alignments, {minTLENPercentile, maxTLENPercentile}) {
+            this.totalCount = 0;
+            this.frCount = 0;
+            this.rfCount = 0;
+            this.ffCount = 0;
+            this.sumF = 0;
+            this.sumF2 = 0;
+            this.lp = minTLENPercentile === undefined ? 0.1 : minTLENPercentile;
+            this.up = maxTLENPercentile === undefined ? 99.5 : maxTLENPercentile;
+            this.isizes = [];
+            this.compute(alignments);
+        }
+
+        compute(alignments) {
+
+            for (let alignment of alignments) {
+                if (alignment.isProperPair()) {
+                    var tlen = Math.abs(alignment.fragmentLength);
+                    this.sumF += tlen;
+                    this.sumF2 += tlen * tlen;
+                    this.isizes.push(tlen);
+
+                    var po = alignment.pairOrientation;
+
+                    if (typeof po === "string" && po.length === 4) {
+                        var tmp = '' + po.charAt(0) + po.charAt(2);
+                        switch (tmp) {
+                            case 'FF':
+                            case 'RR':
+                                this.ffCount++;
+                                break
+                            case "FR":
+                                this.frCount++;
+                                break
+                            case"RF":
+                                this.rfCount++;
+                        }
+                    }
+                    this.totalCount++;
+                }
+            }
+
+            if (this.ffCount / this.totalCount > 0.9) this.orienation = "ff";
+            else if (this.frCount / this.totalCount > 0.9) this.orienation = "fr";
+            else if (this.rfCount / this.totalCount > 0.9) this.orienation = "rf";
+
+            this.minTLEN = this.lp === 0 ? 0 : percentile(this.isizes, this.lp);
+            this.maxTLEN = percentile(this.isizes, this.up);
+
+            // var fMean = this.sumF / this.totalCount
+            // var stdDev = Math.sqrt((this.totalCount * this.sumF2 - this.sumF * this.sumF) / (this.totalCount * this.totalCount))
+            // this.minTLEN = fMean - 3 * stdDev
+            // this.maxTLEN = fMean + 3 * stdDev
+
+        }
+    }
+
+    function percentile(array, p) {
+
+        if (array.length === 0) return undefined
+        var k = Math.floor(array.length * (p / 100));
+        array.sort(function (a, b) {
+            return a - b
+        });
+        return array[k]
+
+    }
+
+    const GtexUtils = {
+
+        getTissueInfo: function (datasetId, baseURL) {
+            datasetId = datasetId || 'gtex_v8';
+            baseURL = baseURL || 'https://gtexportal.org/rest/v1';
+            let url = baseURL + '/dataset/tissueInfo?datasetId=' + datasetId;
+            return igvxhr.loadJson(url, {})
+        },
+
+        //https://gtexportal.org/rest/v1/association/singleTissueEqtlByLocation?chromosome=7&start=98358766&end=101523798&tissueName=Liver&datasetId=gtex_v7
+        //https://gtexportal.org/rest/v1/association/singleTissueEqtlByLocation?chromosome=7&start=98358766&end=101523798&tissueSiteDetailId=Liver&datasetId=gtex_v8
+        trackConfiguration: function (tissueSummary, baseURL) {
+            baseURL = baseURL || 'https://gtexportal.org/rest/v1';
+            return {
+                type: "eqtl",
+                sourceType: "gtex-ws",
+                url: baseURL + '/association/singleTissueEqtlByLocation',
+                tissueSiteDetailId: tissueSummary.tissueSiteDetailId,
+                name: (tissueSummary.tissueSiteDetailId.split('_').join(' ')),
+                visibilityWindow: 250000
+            }
+        }
+    };
+
+    /**
+     * @param feature
+     * @param bpStart  genomic location of the left edge of the current canvas
+     * @param xScale  scale in base-pairs per pixel
+     * @returns {{px: number, px1: number, pw: number, h: number, py: number}}
+     */
+    function calculateFeatureCoordinates(feature, bpStart, xScale) {
+        let px = (feature.start - bpStart) / xScale;
+        let px1 = (feature.end - bpStart) / xScale;
+        //px = Math.round((feature.start - bpStart) / xScale),
+        //px1 = Math.round((feature.end - bpStart) / xScale),
+        let pw = px1 - px;
+
+        if (pw < 3) {
+            pw = 3;
+            px -= 1.5;
+        }
+
+        return {
+            px: px,
+            px1: px1,
+            pw: pw
+        }
+    }
+
+    /**
+     *
+     * @param feature
+     * @param bpStart  genomic location of the left edge of the current canvas
+     * @param xScale  scale in base-pairs per pixel
+     * @param pixelHeight  pixel height of the current canvas
+     * @param ctx  the canvas 2d context
+     * @param options  genomic state
+     */
+    function renderFeature(feature, bpStart, xScale, pixelHeight, ctx, options) {
+
+        try {
+            ctx.save();
+
+            // Set ctx color to a known valid color.  If getColorForFeature returns an invalid color string it is ignored, and
+            // this default will be used.
+            ctx.fillStyle = this.color;
+            ctx.strokeStyle = this.color;
+
+            const color = this.getColorForFeature(feature);
+            ctx.fillStyle = color;
+            ctx.strokeStyle = color;
+
+            let h;
+            let py;
+            if (this.displayMode === "SQUISHED" && feature.row !== undefined) {
+                h = this.featureHeight / 2;
+                py = this.margin + this.squishedRowHeight * feature.row;
+            } else if (this.displayMode === "EXPANDED" && feature.row !== undefined) {
+                h = this.featureHeight;
+                py = this.margin + this.expandedRowHeight * feature.row;
+            } else {  // collapsed
+                h = this.featureHeight;
+                py = this.margin;
+            }
+
+            const pixelWidth = options.pixelWidth;   // typical 3*viewportWidth
+
+            const cy = py + h / 2;
+            const h2 = h / 2;
+            const py2 = cy - h2 / 2;
+
+            const exonCount = feature.exons ? feature.exons.length : 0;
+            const coord = calculateFeatureCoordinates(feature, bpStart, xScale);
+            const step = this.arrowSpacing;
+            const direction = feature.strand === '+' ? 1 : feature.strand === '-' ? -1 : 0;
+
+            if (exonCount === 0) {
+                // single-exon transcript
+                const xLeft = Math.max(0, coord.px);
+                const xRight = Math.min(pixelWidth, coord.px1);
+                const width = xRight - xLeft;
+                ctx.fillRect(xLeft, py, width, h);
+
+                // Arrows
+                // Do not draw if strand is not +/-
+                if (direction !== 0) {
+                    ctx.fillStyle = "white";
+                    ctx.strokeStyle = "white";
+                    for (let x = xLeft + step / 2; x < xRight; x += step) {
+                        // draw arrowheads along central line indicating transcribed orientation
+                        IGVGraphics.strokeLine(ctx, x - direction * 2, cy - 2, x, cy);
+                        IGVGraphics.strokeLine(ctx, x - direction * 2, cy + 2, x, cy);
+                    }
+                    ctx.fillStyle = color;
+                    ctx.strokeStyle = color;
+                }
+            } else {
+                // multi-exon transcript
+                IGVGraphics.strokeLine(ctx, coord.px + 1, cy, coord.px1 - 1, cy); // center line for introns
+
+
+                const xLeft = Math.max(0, coord.px) + step / 2;
+                const xRight = Math.min(pixelWidth, coord.px1);
+                for (let x = xLeft; x < xRight; x += step) {
+                    // draw arrowheads along central line indicating transcribed orientation
+                    IGVGraphics.strokeLine(ctx, x - direction * 2, cy - 2, x, cy);
+                    IGVGraphics.strokeLine(ctx, x - direction * 2, cy + 2, x, cy);
+                }
+                for (let e = 0; e < exonCount; e++) {
+                    // draw the exons
+                    const exon = feature.exons[e];
+                    let ePx = Math.round((exon.start - bpStart) / xScale);
+                    let ePx1 = Math.round((exon.end - bpStart) / xScale);
+                    let ePw = Math.max(1, ePx1 - ePx);
+                    let ePxU;
+
+                    if (ePx + ePw < 0) {
+                        continue  // Off the left edge
+                    }
+                    if (ePx > pixelWidth) {
+                        break // Off the right edge
+                    }
+
+                    if (exon.utr) {
+                        ctx.fillRect(ePx, py2, ePw, h2); // Entire exon is UTR
+                    } else {
+                        if (exon.cdStart) {
+                            ePxU = Math.round((exon.cdStart - bpStart) / xScale);
+                            ctx.fillRect(ePx, py2, ePxU - ePx, h2); // start is UTR
+                            ePw -= (ePxU - ePx);
+                            ePx = ePxU;
+
+                        }
+                        if (exon.cdEnd) {
+                            ePxU = Math.round((exon.cdEnd - bpStart) / xScale);
+                            ctx.fillRect(ePxU, py2, ePx1 - ePxU, h2); // start is UTR
+                            ePw -= (ePx1 - ePxU);
+                            ePx1 = ePxU;
+                        }
+
+                        ePw = Math.max(ePw, 1);
+                        ctx.fillRect(ePx, py, ePw, h);
+
+                        // Arrows
+                        if (ePw > step + 5 && direction !== 0) {
+                            ctx.fillStyle = "white";
+                            ctx.strokeStyle = "white";
+                            for (let x = ePx + step / 2; x < ePx1; x += step) {
+                                // draw arrowheads along central line indicating transcribed orientation
+                                IGVGraphics.strokeLine(ctx, x - direction * 2, cy - 2, x, cy);
+                                IGVGraphics.strokeLine(ctx, x - direction * 2, cy + 2, x, cy);
+                            }
+                            ctx.fillStyle = color;
+                            ctx.strokeStyle = color;
+
+                        }
+                    }
+                }
+            }
+
+            if (options.drawLabel && this.displayMode !== "SQUISHED") {
+                renderFeatureLabel.call(this, ctx, feature, coord.px, coord.px1, py, options.referenceFrame, options);
+            }
+        } finally {
+            ctx.restore();
+        }
+    }
+
+    /**
+     * @param ctx       the canvas 2d context
+     * @param feature
+     * @param featureX  feature start in pixel coordinates
+     * @param featureX1 feature end in pixel coordinates
+     * @param featureY  feature y-coordinate
+     * @param windowX   visible window start x-coordinate
+     * @param windowX1  visible window end x-coordinate
+     * @param referenceFrame  genomic state
+     * @param options  options
+     */
+    function renderFeatureLabel(ctx, feature, featureX, featureX1, featureY, referenceFrame, options) {
+
+        try {
+            ctx.save();
+
+            let name = feature.name;
+            if (name === undefined && feature.gene) name = feature.gene.name;
+            if (name === undefined) name = feature.id || feature.ID;
+            if (!name || name === '.') return
+
+
+            let pixelXOffset = options.pixelXOffset || 0;
+            const t1 = Math.max(featureX, -pixelXOffset);
+            const t2 = Math.min(featureX1, -pixelXOffset + options.viewportWidth);
+            let centerX = (t1 + t2) / 2;
+
+            let transform;
+            if (this.displayMode === "COLLAPSED" && this.labelDisplayMode === "SLANT") {
+                transform = {rotate: {angle: 45}};
+            }
+            const labelY = getFeatureLabelY(featureY, transform);
+
+            let color = this.getColorForFeature(feature);
+            let geneColor;
+            let gtexSelection = false;
+            if (referenceFrame.selection && GtexUtils.gtexLoaded) {
+                // TODO -- for gtex, figure out a better way to do this
+                gtexSelection = true;
+                geneColor = referenceFrame.selection.colorForGene(name);
+            }
+
+            const geneFontStyle = {
+                textAlign: "SLANT" === this.labelDisplayMode ? undefined : 'center',
+                fillStyle: geneColor || color,
+                strokeStyle: geneColor || color
+            };
+
+            const textBox = ctx.measureText(name);
+            const xleft = centerX - textBox.width / 2;
+            const xright = centerX + textBox.width / 2;
+            const lastLabelX = options.rowLastLabelX[feature.row] || -Number.MAX_SAFE_INTEGER;
+            if (options.labelAllFeatures || xleft > lastLabelX || gtexSelection) {
+                options.rowLastLabelX[feature.row] = xright;
+
+                if ('y' === options.axis) {
+                    ctx.save();
+                    IGVGraphics.labelTransformWithContext(ctx, centerX);
+                    IGVGraphics.fillText(ctx, name, centerX, labelY, geneFontStyle, transform);
+                    ctx.restore();
+                } else {
+                    IGVGraphics.fillText(ctx, name, centerX, labelY, geneFontStyle, transform);
+                }
+            }
+
+        } finally {
+            ctx.restore();
+        }
+    }
+
+    function getFeatureLabelY(featureY, transform) {
+        return transform ? featureY + 20 : featureY + 25
+    }
+
+    // SNP constants
+
+    const codingNonSynonSet = new Set(['nonsense', 'missense', 'stop-loss', 'frameshift', 'cds-indel']);
+    const codingSynonSet = new Set(['coding-synon']);
+    const spliceSiteSet = new Set(['splice-3', 'splice-5']);
+    const untranslatedSet = new Set(['untranslated-5', 'untranslated-3']);
+
+
+    /**
+     * Renderer for a UCSC snp track
+     *
+     * @param snp
+     * @param bpStart  genomic location of the left edge of the current canvas
+     * @param xScale  scale in base-pairs per pixel
+     * @param pixelHeight  pixel height of the current canvas
+     * @param ctx  the canvas 2d context
+     */
+    function renderSnp(snp, bpStart, xScale, pixelHeight, ctx) {
+
+        var coord = calculateFeatureCoordinates(snp, bpStart, xScale),
+            py = this.margin,
+            h,
+            colorArrLength = this.snpColors.length,
+            colorPriority;
+
+        h = this.displayMode === "squished" ? this.squishedRowHeight : this.expandedRowHeight;
+
+        switch (this.colorBy) {
+            case 'function':
+                colorPriority = colorByFunc(snp.func);
+                break
+            case 'class':
+                colorPriority = colorByClass(snp['class']);
+        }
+
+        ctx.fillStyle = this.snpColors[colorPriority];
+        ctx.fillRect(coord.px, py, coord.pw, h);
+
+        // Coloring functions, convert a value to a priority
+
+        function colorByFunc(theFunc) {
+            var priorities;
+            var funcArray = theFunc.split(',');
+            // possible func values
+
+
+            priorities = funcArray.map(function (func) {
+                if (codingNonSynonSet.has(func) || spliceSiteSet.has(func)) {
+                    return colorArrLength - 1
+                } else if (codingSynonSet.has(func)) {
+                    return colorArrLength - 2
+                } else if (untranslatedSet.has(func)) {
+                    return colorArrLength - 3
+                } else { // locusSet.has(func) || intronSet.has(func)
+                    return 0
+                }
+            });
+
+            return priorities.reduce(function (a, b) {
+                return Math.max(a, b)
+            })
+        }
+
+        function colorByClass(cls) {
+            if (cls === 'deletion') {
+                return colorArrLength - 1
+            } else if (cls === 'mnp') {
+                return colorArrLength - 2
+            } else if (cls === 'microsatellite' || cls === 'named') {
+                return colorArrLength - 3
+            } else { // cls === 'single' || cls === 'in-del' || cls === 'insertion'
+                return 0
+            }
+        }
+    }
+
+    /**
+     *
+     * @param feature
+     * @param bpStart  genomic location of the left edge of the current canvas
+     * @param xScale  scale in base-pairs per pixel
+     * @param pixelHeight  pixel height of the current canvas
+     * @param ctx  the canvas 2d context
+     */
+    function renderFusionJuncSpan(feature, bpStart, xScale, pixelHeight, ctx) {
+
+        const rowHeight = (this.displayMode === "EXPANDED") ? this.expandedRowHeight : this.squishedRowHeight;
+        let py = this.margin;
+        if (this.displayMode !== "COLLAPSED" && feature.row !== undefined) {
+            py += feature.row * rowHeight;
+        }
+
+        const cy = py + 0.5 * rowHeight;
+        const topY = cy - 0.5 * rowHeight;
+        const bottomY = cy + 0.5 * rowHeight;
+
+        // draw the junction arc
+        const junctionLeftPx = Math.round((feature.junction_left - bpStart) / xScale);
+        const junctionRightPx = Math.round((feature.junction_right - bpStart) / xScale);
+
+        ctx.beginPath();
+        ctx.moveTo(junctionLeftPx, cy);
+        ctx.bezierCurveTo(junctionLeftPx, topY, junctionRightPx, topY, junctionRightPx, cy);
+
+        ctx.lineWidth = 1 + Math.log(feature.num_junction_reads) / Math.log(2);
+        ctx.strokeStyle = 'blue';
+        ctx.stroke();
+
+        // draw the spanning arcs
+        const spanningCoords = feature.spanning_frag_coords;
+        for (let i = 0; i < spanningCoords.length; i++) {
+
+            const spanningInfo = spanningCoords[i];
+            const spanLeftPx = Math.round((spanningInfo.left - bpStart) / xScale);
+            const spanRightPx = Math.round((spanningInfo.right - bpStart) / xScale);
+
+            ctx.beginPath();
+            ctx.moveTo(spanLeftPx, cy);
+            ctx.bezierCurveTo(spanLeftPx, bottomY, spanRightPx, bottomY, spanRightPx, cy);
+
+            ctx.lineWidth = 1;
+            ctx.strokeStyle = 'purple';
+            ctx.stroke();
+        }
+    }
+
+    const DEFAULT_COLOR$2 = 'rgb(0, 0, 150)';
+
+
+    class FeatureTrack extends TrackBase {
+
+        static defaults = {
+            type: "annotation",
+            maxRows: 1000, // protects against pathological feature packing cases (# of rows of overlapping feaures)
+            displayMode: "EXPANDED", // COLLAPSED | EXPANDED | SQUISHED
+            margin: 10,
+            featureHeight: 14,
+            autoHeight: false,
+            useScore: false
+        }
+
+
+        constructor(config, browser) {
+            super(config, browser);
+        }
+
+        init(config) {
+            super.init(config);
+
+
+            // Obscure option, not common or supoorted, included for backward compatibility
+            this.labelDisplayMode = config.labelDisplayMode;
+
+            if (config._featureSource) {
+                this.featureSource = config._featureSource;
+                delete config._featureSource;
+            } else {
+                this.featureSource = config.featureSource ?
+                    config.featureSource :
+                    FeatureSource(config, this.browser.genome);
+            }
+
+            if ("FusionJuncSpan" === config.type) {
+                this.render = config.render || renderFusionJuncSpan;
+                this.squishedRowHeight = config.squishedRowHeight || 50;
+                this.expandedRowHeight = config.expandedRowHeight || 50;
+                this.height = config.height || this.margin + 2 * this.expandedRowHeight;
+            } else if ('snp' === config.type) {
+                this.render = config.render || renderSnp;
+                // colors ordered based on priority least to greatest
+                this.snpColors = ['rgb(0,0,0)', 'rgb(0,0,255)', 'rgb(0,255,0)', 'rgb(255,0,0)'];
+                this.colorBy = 'function';
+                this.expandedRowHeight = config.expandedRowHeight || 10;
+                this.squishedRowHeight = config.squishedRowHeight || 5;
+                this.height = config.height || 30;
+            } else {
+                this.render = config.render || renderFeature;
+                this.arrowSpacing = 30;
+                // adjust label positions to make sure they're always visible
+                monitorTrackDrag(this);
+                this.squishedRowHeight = config.squishedRowHeight || 15;
+                this.expandedRowHeight = config.expandedRowHeight || 30;
+                this.height = config.height || this.margin + 2 * this.expandedRowHeight;
+
+                // Set colorBy fields considering legacy options for backward compatibility
+                if (config.colorBy) {
+                    if (config.colorBy.field) {
+                        config.colorTable = config.colorBy.pallete || config.colorBy.palette;
+                        config.colorBy = config.colorBy.field;
+                    }
+                    this.colorBy = config.colorBy;   // Can be undefined => default
+                    if (config.colorTable) {
+                        this.colorTable = new ColorTable(config.colorTable);
+                    } else {
+                        this.colorTable = new PaletteColorTable("Set1");
+                    }
+                }
+            }
+        }
+
+        async postInit() {
+
+            if (typeof this.featureSource.getHeader === "function") {
+                this.header = await this.featureSource.getHeader();
+                if (this.disposed) return   // This track was removed during async load
+            }
+
+            // Set properties from track line
+            if (this.header) {
+                this.setTrackProperties(this.header);
+            }
+
+            if (this.visibilityWindow === undefined && typeof this.featureSource.defaultVisibilityWindow === 'function') {
+                this.visibilityWindow = await this.featureSource.defaultVisibilityWindow();
+            }
+
+            return this
+
+        }
+
+        get supportsWholeGenome() {
+            if (this.config.supportsWholeGenome !== undefined) {
+                return this.config.supportsWholeGenome
+            } else if (this.featureSource && typeof this.featureSource.supportsWholeGenome === 'function') {
+                return this.featureSource.supportsWholeGenome()
+            } else {
+                if (this.visibilityWindow === undefined && (this.config.indexed === false || !this.config.indexURL)) {
+                    return true
+                }
+            }
+        }
+
+        async getFeatures(chr, start, end, bpPerPixel) {
+            const visibilityWindow = this.visibilityWindow;
+            return this.featureSource.getFeatures({chr, start, end, bpPerPixel, visibilityWindow})
+        };
+
+
+        /**
+         * The required height in pixels required for the track content.   This is not the visible track height, which
+         * can be smaller (with a scrollbar) or larger.
+         *
+         * @param features
+         * @returns {*}
+         */
+        computePixelHeight(features) {
+
+            if (this.displayMode === "COLLAPSED") {
+                return this.margin + this.expandedRowHeight
+            } else {
+                let maxRow = 0;
+                if (features && (typeof features.forEach === "function")) {
+                    for (let feature of features) {
+                        if (feature.row && feature.row > maxRow) {
+                            maxRow = feature.row;
+                        }
+                    }
+                }
+
+                const height = this.margin + (maxRow + 1) * ("SQUISHED" === this.displayMode ? this.squishedRowHeight : this.expandedRowHeight);
+                return height
+
+            }
+        };
+
+        draw(options) {
+
+            const featureList = options.features;
+            const ctx = options.context;
+            const bpPerPixel = options.bpPerPixel;
+            const bpStart = options.bpStart;
+            const pixelWidth = options.pixelWidth;
+            const pixelHeight = options.pixelHeight;
+            const bpEnd = bpStart + pixelWidth * bpPerPixel + 1;
+
+
+            if (!this.config.isMergedTrack) {
+                IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+            }
+
+            if (featureList) {
+
+                const rowFeatureCount = [];
+                options.rowLastX = [];
+                options.rowLastLabelX = [];
+                for (let feature of featureList) {
+                    if (feature.start > bpStart && feature.end < bpEnd) {
+                        const row = this.displayMode === "COLLAPSED" ? 0 : feature.row || 0;
+                        if (rowFeatureCount[row] === undefined) {
+                            rowFeatureCount[row] = 1;
+                        } else {
+                            rowFeatureCount[row]++;
+                        }
+                        options.rowLastX[row] = -Number.MAX_SAFE_INTEGER;
+                        options.rowLastLabelX[row] = -Number.MAX_SAFE_INTEGER;
+                    }
+                }
+                const maxFeatureCount = Math.max(1, Math.max(...rowFeatureCount));
+                const pixelsPerFeature = pixelWidth / maxFeatureCount;
+
+                let lastPxEnd = [];
+                for (let feature of featureList) {
+                    if (feature.end < bpStart) continue
+                    if (feature.start > bpEnd) break
+                    const row = this.displayMode === 'COLLAPSED' ? 0 : feature.row;
+                    options.drawLabel = options.labelAllFeatures || pixelsPerFeature > 10;
+                    const pxEnd = Math.ceil((feature.end - bpStart) / bpPerPixel);
+                    const last = lastPxEnd[row];
+                    if (!last || pxEnd > last) {
+                        this.render.call(this, feature, bpStart, bpPerPixel, pixelHeight, ctx, options);
+
+                        // Ensure a visible gap between features
+                        const pxStart = Math.floor((feature.start - bpStart) / bpPerPixel);
+                        if (last && pxStart - last <= 0) {
+                            ctx.globalAlpha = 0.5;
+                            IGVGraphics.strokeLine(ctx, pxStart, 0, pxStart, pixelHeight, {'strokeStyle': "rgb(255, 255, 255)"});
+                            ctx.globalAlpha = 1.0;
+                        }
+                        lastPxEnd[row] = pxEnd;
+                    }
+                }
+
+            } else {
+                console.log("No feature list");
+            }
+
+        };
+
+        clickedFeatures(clickState) {
+
+            const y = clickState.y - this.margin;
+            const allFeatures = super.clickedFeatures(clickState);
+
+            let row;
+            switch (this.displayMode) {
+                case 'SQUISHED':
+                    row = Math.floor(y / this.squishedRowHeight);
+                    break
+                case 'EXPANDED':
+                    row = Math.floor(y / this.expandedRowHeight);
+                    break
+                default:
+                    row = undefined;
+            }
+
+            return allFeatures.filter(function (feature) {
+                return (row === undefined || feature.row === undefined || row === feature.row)
+            })
+        }
+
+        /**
+         * Return "popup data" for feature @ genomic location.  Data is an array of key-value pairs
+         */
+        popupData(clickState, features) {
+
+            if (features === undefined) features = this.clickedFeatures(clickState);
+            const genomicLocation = clickState.genomicLocation;
+            const data = [];
+            for (let feature of features) {
+
+                // Whole genome hack, whole-genome psuedo features store the "real" feature in an _f field
+                const f = feature._f || feature;
+
+                const featureData = (typeof f.popupData === "function") ?
+                    f.popupData(genomicLocation) :
+                    this.extractPopupData(f);
+
+                if (featureData) {
+
+                    if (data.length > 0) {
+                        data.push("<hr/><hr/>");
+                    }
+
+                    // If we have an infoURL, find the name property and create the link.  We do this at this level
+                    // to catch name properties in both custom popupData functions and the generic extractPopupData function
+
+                    const infoURL = this.infoURL || this.config.infoURL;
+                    for (let fd of featureData) {
+                        data.push(fd);
+                        if (infoURL &&
+                            fd.name &&
+                            fd.name.toLowerCase() === "name" &&
+                            fd.value &&
+                            isString$2(fd.value) &&
+                            !fd.value.startsWith("<")) {
+                            const href = infoURL.replace("$$", feature.name);
+                            fd.value = `<a target=_blank href=${href}>${fd.value}</a>`;
+                        }
+                    }
+
+
+                    //Array.prototype.push.apply(data, featureData);
+
+                    // If we have clicked over an exon number it.
+                    // Disabled for GFF and GTF files if the visibility window is < the feature length since we don't know if we have all exons
+                    const isGFF = "gff" === this.config.format || "gff3" === this.config.format || "gtf" === this.config.format;
+                    if (f.exons) {
+                        for (let i = 0; i < f.exons.length; i++) {
+                            const exon = f.exons[i];
+                            if (genomicLocation >= exon.start && genomicLocation <= exon.end) {
+                                const exonNumber = isGFF ?
+                                    exon.number :
+                                    f.strand === "-" ? f.exons.length - i : i + 1;
+                                if (exonNumber) {
+                                    data.push('<hr/>');
+                                    data.push({name: "Exon Number", value: exonNumber});
+                                }
+                                break
+                            }
+                        }
+                    }
+                }
+            }
+
+            return data
+
+        }
+
+        menuItemList() {
+
+            const menuItems = [];
+
+            if (this.render === renderSnp) {
+                menuItems.push('<hr/>');
+                for (let colorScheme of ["function", "class"]) {
+                    menuItems.push({
+                        object: $$1(createCheckbox('Color by ' + colorScheme, colorScheme === this.colorBy)),
+                        click: () => {
+                            this.colorBy = colorScheme;
+                            this.trackView.repaintViews();
+                        }
+                    });
+                }
+            }
+
+            menuItems.push('<hr/>');
+            for (let displayMode of ["COLLAPSED", "SQUISHED", "EXPANDED"]) {
+                const lut =
+                    {
+                        "COLLAPSED": "Collapse",
+                        "SQUISHED": "Squish",
+                        "EXPANDED": "Expand"
+                    };
+
+                menuItems.push(
+                    {
+                        object: $$1(createCheckbox(lut[displayMode], displayMode === this.displayMode)),
+                        click: () => {
+                            this.displayMode = displayMode;
+                            this.config.displayMode = displayMode;
+                            this.trackView.checkContentHeight();
+                            this.trackView.repaintViews();
+                        }
+                    });
+            }
+
+            return menuItems
+
+        };
+
+
+        contextMenuItemList(clickState) {
+
+            const features = this.clickedFeatures(clickState);
+
+            if (undefined === features || 0 === features.length) {
+                return undefined
+            }
+
+            if (features.length > 1) {
+                features.sort((a, b) => (b.end - b.start) - (a.end - a.start));
+            }
+            const f = features[0];   // The shortest clicked feature
+
+            if ((f.end - f.start) <= 1000000) {
+                const list = [{
+                    label: 'View feature sequence',
+                    click: async () => {
+                        let seq = await this.browser.genome.getSequence(f.chr, f.start, f.end);
+                        if (!seq) {
+                            seq = "Unknown sequence";
+                        } else if (f.strand === '-') {
+                            seq = reverseComplementSequence(seq);
+                        }
+                        this.browser.alert.present(seq);
+
+                    }
+                }];
+
+                if (isSecureContext() && navigator.clipboard !== undefined) {
+                    list.push(
+                        {
+                            label: 'Copy feature sequence',
+                            click: async () => {
+                                let seq = await this.browser.genome.getSequence(f.chr, f.start, f.end);
+                                if (!seq) {
+                                    seq = "Unknown sequence";
+                                } else if (f.strand === '-') {
+                                    seq = reverseComplementSequence(seq);
+                                }
+                                try {
+                                    await navigator.clipboard.writeText(seq);
+                                } catch (e) {
+                                    console.error(e);
+                                    this.browser.alert.present(`error copying sequence to clipboard ${e}`);
+                                }
+                            }
+                        }
+                    );
+                }
+                list.push('<hr/>');
+                return list
+            } else {
+                return undefined
+            }
+        }
+
+        description() {
+
+            // if('snp' === this.type) {
+            if (renderSnp === this.render) {
+                let desc = "<html>" + this.name + '<hr/>';
+                desc += '<em>Color By Function:</em><br>';
+                desc += '<span style="color:red">Red</span>: Coding-Non-Synonymous, Splice Site<br>';
+                desc += '<span style="color:green">Green</span>: Coding-Synonymous<br>';
+                desc += '<span style="color:blue">Blue</span>: Untranslated<br>';
+                desc += '<span style="color:black">Black</span>: Intron, Locus, Unknown<br><br>';
+                desc += '<em>Color By Class:</em><br>';
+                desc += '<span style="color:red">Red</span>: Deletion<br>';
+                desc += '<span style="color:green">Green</span>: MNP<br>';
+                desc += '<span style="color:blue">Blue</span>: Microsatellite, Named<br>';
+                desc += '<span style="color:black">Black</span>: Indel, Insertion, SNP';
+                desc += "</html>";
+                return desc
+            } else {
+                return super.description()
+            }
+
+        };
+
+        /**
+         * Return color for feature.
+         * @param feature
+         * @returns {string}
+         */
+
+        getColorForFeature(feature) {
+
+            let color;
+            if (this.altColor && "-" === feature.strand) {
+                color = (typeof this.altColor === "function") ? this.altColor(feature) : this.altColor;
+            } else if (this.color) {
+                color = (typeof this.color === "function") ? this.color(feature) : this.color;  // Explicit setting via menu, or possibly track line if !config.color
+            } else if (this.colorBy) {
+                const value = feature.getAttributeValue ?
+                    feature.getAttributeValue(this.colorBy) :
+                    feature[this.colorBy];
+                color = this.colorTable.getColor(value);
+            } else if (feature.color) {
+                color = feature.color;   // Explicit color for feature
+            }
+
+            // If no explicit setting use the default
+            if (!color) {
+                color = DEFAULT_COLOR$2;   // Track default
+            }
+
+            if (feature.alpha && feature.alpha !== 1) {
+                color = IGVColor.addAlpha(color, feature.alpha);
+            } else if (this.useScore && feature.score && !Number.isNaN(feature.score)) {
+                // UCSC useScore option, for scores between 0-1000.  See https://genome.ucsc.edu/goldenPath/help/customTrack.html#TRACK
+                const min = this.config.min ? this.config.min : this.viewLimitMin ? this.viewLimitMin : 0;
+                const max = this.config.max ? this.config.max : this.viewLimitMax ? this.viewLimitMax : 1000;
+                const alpha = getAlpha(min, max, feature.score);
+                feature.alpha = alpha;    // Avoid computing again
+                color = IGVColor.addAlpha(color, alpha);
+            }
+
+
+            function getAlpha(min, max, score) {
+                const binWidth = (max - min) / 9;
+                const binNumber = Math.floor((score - min) / binWidth);
+                return Math.min(1.0, 0.2 + (binNumber * 0.8) / 9)
+            }
+
+            return color
+        }
+
+
+        /**
+         * Called when the track is removed.  Do any needed cleanup here
+         */
+        dispose() {
+            this.trackView = undefined;
+        }
+    }
+
+    /**
+     * Monitors track drag events, updates label position to ensure that they're always visible.
+     * @param track
+     */
+    function monitorTrackDrag(track) {
+
+        if (track.browser.on) {
+            track.browser.on('trackdragend', onDragEnd);
+            track.browser.on('trackremoved', unSubscribe);
+        }
+
+        function onDragEnd() {
+            if (track.trackView && track.displayMode !== "SQUISHED") {
+                track.trackView.updateViews();      // TODO -- refine this to the viewport that was dragged after DOM refactor
+            }
+        }
+
+        function unSubscribe(removedTrack) {
+            if (track.browser.un && track === removedTrack) {
+                track.browser.un('trackdragend', onDragEnd);
+                track.browser.un('trackremoved', unSubscribe);
+            }
+        }
+
+    }
+
+    class RegionTableBase {
+        constructor(config) {
+
+            this.config = config;
+
+            this.browser = config.browser;
+
+            this.columnFormat = config.columnFormat;
+
+            this.tableRowSelectionList = [];
+
+            this.tableDOM = domUtils.div({ class: 'igv-roi-table' });
+            // if(config.width) {
+            //     let [ w ] = config.width.split('px')
+            //     w = parseInt(w, 10)
+            //     this.tableDOM.style.width = `${Math.min(w, 1600)}px`
+            //
+            // }
+
+            config.parent.appendChild(this.tableDOM);
+
+            this.headerDOM = config;
+
+            this.tableColumnTitles = this.tableDOM;
+
+            this.tableRowContainer = this.tableDOM;
+
+            this.footerDOM = config.gotoButtonHandler;
+
+        }
+
+        set headerDOM({ browser, parent, headerTitle, dismissHandler }) {
+
+            // header
+            const dom = domUtils.div();
+            this.tableDOM.appendChild(dom);
+
+            // header title
+            const div = domUtils.div();
+            dom.appendChild(div);
+            div.innerHTML = headerTitle;
+
+            // table dismiss button
+            const dismiss = domUtils.div();
+            dom.appendChild(dismiss);
+            dismiss.appendChild(icons$1.createIcon('times'));
+
+            this.boundDismissHandler = mouseClickHandler.bind(this);
+
+            dismiss.addEventListener('click', this.boundDismissHandler);
+
+            function mouseClickHandler (event) {
+                event.stopPropagation();
+                dismissHandler();
+            }
+
+            const { y:y_root } = browser.root.getBoundingClientRect();
+            const { y:y_parent } = parent.getBoundingClientRect();
+            const constraint = -(y_parent - y_root);
+            makeDraggable(this.tableDOM, dom, { minX:0, minY:constraint });
+
+            this.tableDOM.style.display = 'none';
+
+            this._headerDOM = dom;
+
+        }
+
+        set tableColumnTitles(tableDOM) {
+
+            const tblColumnTitles = domUtils.div({ class: 'igv-roi-table-column-titles' });
+            tableDOM.appendChild(tblColumnTitles);
+
+            for (const { label, width } of this.columnFormat) {
+                const col = domUtils.div();
+                tblColumnTitles.appendChild(col);
+                col.style.width = width;
+                col.innerText = label;
+            }
+
+            this._tableColumnTitlesDOM = tblColumnTitles;
+
+        }
+
+        get tableColumnTitles() {
+            return this._tableColumnTitlesDOM
+        }
+
+        set tableRowContainer(container) {
+
+            const tblRowContainer = domUtils.div({ class: 'igv-roi-table-row-container' });
+            container.appendChild(tblRowContainer);
+
+            this._tableRowContainerDOM = tblRowContainer;
+
+        }
+
+        get tableRowContainer() {
+            return this._tableRowContainerDOM
+        }
+
+        set footerDOM(gotoButtonHandler) {
+
+            const dom = domUtils.div();
+            this.tableDOM.appendChild(dom);
+
+            // Go To Button
+            const gotoButton = domUtils.div({class: 'igv-roi-table-button'});
+            dom.appendChild(gotoButton);
+
+            gotoButton.id = 'igv-roi-table-view-button';
+            gotoButton.textContent = 'Go To';
+            gotoButton.style.pointerEvents = 'none';
+
+            this._footerDOM = dom;
+
+            this.gotoButton = gotoButton;
+
+            this.boundGotoButtonHandler = gotoButtonHandler.bind(this);
+
+            this.gotoButton.addEventListener('click', this.boundGotoButtonHandler);
+
+        }
+
+        tableRowDOMHelper(dom) {
+
+            dom.addEventListener('mousedown', event => {
+                event.stopPropagation();
+
+                dom.classList.toggle('igv-roi-table-row-selected');
+                dom.classList.contains('igv-roi-table-row-selected') ? dom.classList.remove('igv-roi-table-row-hover') : dom.classList.add('igv-roi-table-row-hover');
+
+                this.setTableRowSelectionState(dom.classList.contains('igv-roi-table-row-selected'));
+            });
+
+            dom.addEventListener('mouseover', e => {
+                dom.classList.contains('igv-roi-table-row-selected') ? dom.classList.remove('igv-roi-table-row-hover') : dom.classList.add('igv-roi-table-row-hover');
+            });
+
+            dom.addEventListener('mouseout', e => {
+                dom.classList.remove('igv-roi-table-row-hover');
+            });
+
+        }
+
+        clearTable() {
+            const elements = this.tableRowContainer.querySelectorAll('.igv-roi-table-row');
+            for (let el of elements) {
+                el.remove();
+            }
+        }
+
+        setTableRowSelectionState(isTableRowSelected) {
+            isTableRowSelected ? this.tableRowSelectionList.push(1) : this.tableRowSelectionList.pop();
+            this.gotoButton.style.pointerEvents = this.tableRowSelectionList.length > 0 ? 'auto' : 'none';
+        }
+
+        present() {
+            this.tableDOM.style.left = `${ 0 }px`;
+
+            const { y:y_root } = this.browser.root.getBoundingClientRect();
+            const { y:y_parent } = this.config.parent.getBoundingClientRect();
+
+            this.tableDOM.style.top  = `${ y_root - y_parent }px`;
+            this.tableDOM.style.display = 'flex';
+        }
+
+        dismiss() {
+            this.tableDOM.style.display = 'none';
+        }
+
+        dispose() {
+
+            this.tableDOM.innerHTML = '';
+            this.tableDOM.remove();
+
+            for (const key of Object.keys(this)) {
+                this[key] = undefined;
+            }
+
+            document.removeEventListener('click', this.boundDismissHandler);
+
+        }
+
+    }
+
+    class BlatTable extends RegionTableBase {
+
+        constructor(config) {
+
+            const cooked = Object.assign({ 'width':'1024px' }, config);
+            super(cooked);
+
+            this.descriptionDOM = config;
+
+        }
+
+        set descriptionDOM(config) {
+
+            if (config.description) {
+
+                let dom;
+
+                // BLAT result for query sequence
+                dom = domUtils.div({ class: 'igv-roi-table-description' });
+                this.tableDOM.insertBefore(dom, this.tableColumnTitles);
+                dom.style.height = 'auto';
+                dom.innerHTML = `BLAT result for query sequence:`;
+
+                // CTAATCAtctacactggtttctactg ...
+                dom = domUtils.div({ class: 'igv-roi-table-description' });
+                this.tableDOM.insertBefore(dom, this.tableColumnTitles);
+                dom.style.height = 'auto';
+                dom.style.maxHeight = '128px';
+                dom.innerHTML = config.description;
+
+                // Select one or more rows ...
+                dom = domUtils.div({ class: 'igv-roi-table-goto-explainer' });
+                this.tableDOM.insertBefore(dom, this.tableColumnTitles);
+                dom.innerHTML = `Select one or more rows and click Go To to view the regions`;
+
+            }
+
+        }
+
+        tableRowDOM(record) {
+
+            const dom = domUtils.div({ class: 'igv-roi-table-row' });
+
+            const pretty = record.map(item => isFinite(item) ? numberFormatter$1(item) : item);
+
+            for (let i = 0; i < pretty.length; i++) {
+
+                const el = domUtils.div();
+                dom.appendChild(el);
+
+                const format = this.columnFormat[ i ];
+                el.style.width = format.width || 'fit-content';
+                el.innerText = pretty[ i ];
+            }
+
+            this.tableRowDOMHelper(dom);
+
+            return dom
+        }
+
+        renderTable(records) {
+
+            Array.from(this.tableRowContainer.querySelectorAll('.igv-roi-table-row')).forEach(el => el.remove());
+
+            if (records.length > 0) {
+
+                for (let record of records) {
+                    const row = this.tableRowDOM(record);
+                    this.tableRowContainer.appendChild(row);
+                }
+
+            }
+
+        }
+
+        static getColumnFormatConfiguration() {
+
+            /*
+            return [
+                { label:         'chr', width: '60px' },
+                { label:       'start', width: '100px' },
+                { label:         'end', width: '100px' },
+                { label:      'strand', width: '50px' },
+                { label:       'score', width: '50px' },
+                { label:       'match', width: '50px' },
+                { label:   "mis-match", width: '70px' },
+                { label:  "rep. match", width: '70px' },
+                { label:         "N's", width: '32px' },
+                { label: 'Q gap count', width: '90px' },
+                { label: 'Q gap bases', width: '90px' },
+                { label: 'T gap count', width: '90px' },
+                { label: 'T gap bases', width: '90px' },
+            ]
+            */
+
+            return [
+                { label:         'chr', width: '7%' },
+                { label:       'start', width: '12%' },
+                { label:         'end', width: '12%' },
+                { label:      'strand', width: '5%' },
+                { label:       'score', width: '5%' },
+                { label:       'match', width: '5%' },
+                { label:   "mis-match", width: '7%' },
+                { label:  "rep. match", width: '7%' },
+                { label:         "N's", width: '3%' },
+                { label: 'Q gap count', width: '9%' },
+                { label: 'Q gap bases', width: '9%' },
+                { label: 'T gap count', width: '9%' },
+                { label: 'T gap bases', width: '9%' },
+            ]
+        }
+
+        static gotoButtonHandler (event) {
+
+            event.stopPropagation();
+
+            const selectedRows = this.tableDOM.querySelectorAll('.igv-roi-table-row-selected');
+
+            const loci = [];
+            for (const row of selectedRows) {
+
+                const record = [];
+                row.querySelectorAll('div').forEach(el => record.push(el.innerText));
+
+                const [ chr, start, end ] = record;
+                loci.push(`${ chr }:${ start }-${ end }`);
+            }
+
+            for (const el of this.tableDOM.querySelectorAll('.igv-roi-table-row')) {
+                el.classList.remove('igv-roi-table-row-selected');
+            }
+
+            this.setTableRowSelectionState(false);
+
+            this.browser.search(loci.join(' '));
+
+            // console.log(`browser search( ${loci.join(' ')} )`)
+
+        }
+
+    }
+
+    /*
+    http://genome.ucsc.edu/cgi-bin/hgBlat
+    ?userSeq=CTAATCAtctacactggtttctactgaaatgtctgttgtcatagacttaattgtgtcttcagatacagcagttctgttatttctgagttttacctggggcaagagaatctttagcaagtttaaaggcacctatatctggaatcacccctccctccagatgaatatcacagactctcccattaaaggtcttgccTTCCTTGATAGCATCATCACTCCA
+    &type=DNA
+    &db=hg38
+    &output=json
+     */
+
+    //const blatServer = "https://genome.ucsc.edu/cgi-bin/hgBlat"
+    const defaultBlatServer = "https://igv.org/services/blatUCSC.php";
+    //const blatServer = "http://localhost:8000/blatUCSC.php"
+
+
+    async function blat({url, userSeq, db}) {
+
+        url = url || defaultBlatServer;
+
+        const results = await postData(url, userSeq, db);
+
+        results.fields;
+
+        const features = results.blat.map(decodePSL);
+
+        return features
+    }
+
+    async function postData(url = "", userSeq, db) {
+
+        const data = new URLSearchParams();
+        data.append("userSeq", userSeq);
+        data.append("db", db);
+
+        const response = await fetch(url, { method: "post", body: data });
+        return response.json(); // parses JSON response into native JavaScript objects
+    }
+
+    const maxSequenceSize = 25000;
+
+    class BlatTrack extends FeatureTrack {
+
+        constructor(config, browser) {
+            super(config, browser);
+            if (!this.name) {
+                this.name = 'Blat Results';
+            }
+            this.sequence = config.sequence;
+            this.table = undefined;
+        }
+
+        openTableView() {
+
+            if (undefined === this.table) {
+
+                const rows = this.config.features.map(f => [
+                    f.chr,
+                    (f.start + 1),
+                    f.end,
+                    f.strand,
+                    f.score,
+                    f.matches,
+                    f.misMatches,
+                    f.repMatches,
+                    f.nCount,
+                    f.qNumInsert,
+                    f.qBaseInsert,
+                    f.tNumInsert,
+                    f.tBaseInsert
+                ]);
+
+                const config =
+                    {
+                        browser: this.browser,
+                        parent: this.browser.parent,
+                        headerTitle: this.config.title,
+                        description: this.sequence,
+                        dismissHandler: () => {
+                            this.table.dismiss();
+                            this.table.dispose();
+                            this.table = undefined;
+                        },
+                        columnFormat: BlatTable.getColumnFormatConfiguration(),
+                        gotoButtonHandler: BlatTable.gotoButtonHandler
+                    };
+
+                this.table = new BlatTable(config);
+                this.table.renderTable(rows);
+            }
+
+            this.table.present();
+
+        }
+
+        menuItemList() {
+
+            const menuItems = super.menuItemList();
+
+            menuItems.push('<hr/>');
+            menuItems.push({
+                label: 'Open table view',
+                click: () => this.openTableView()
+            });
+            return menuItems
+        }
+
+
+        /**
+         * Track has been permanently removed.  Release resources and other cleanup
+         */
+        dispose() {
+            super.dispose();
+            // Release DOM element for table
+            if (this.table) {
+                this.table.popover.parentElement.removeChild(this.table.popover);
+
+            }
+
+
+        }
+    }
+
+
+    async function createBlatTrack({sequence, browser, name, title}) {
+
+        if (sequence.length > maxSequenceSize) {
+            browser.alert.present(`Sequence size exceeds maximum allowed length (${sequence.length} > ${maxSequenceSize})`);
+            return
+        }
+
+        const db = browser.genome.id;   // TODO -- blat specific property
+
+        const url = browser.config["blatServerURL"];
+
+        try {
+
+            const features = await blat({url, userSeq: sequence, db});
+            const trackConfig = {
+                type: 'blat',
+                name: name || 'blat results',
+                title: title || 'blat results',
+                sequence: sequence,
+                altColor: 'rgb(176, 176, 236)',
+                color: 'rgb(236, 176, 176)',
+                features: features
+            };
+
+            const track = await browser.loadTrack(trackConfig);
+            track.openTableView();
+
+        } catch (e) {
+            browser.alert.present(`Error performing blat search:  ${e}`);
+        }
+
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const alignmentStartGap = 5;
+    const downsampleRowHeight = 5;
+    const DEFAULT_ALIGNMENT_COLOR = "rgb(185, 185, 185)";
+    const DEFAULT_COVERAGE_COLOR = "rgb(150, 150, 150)";
+    const DEFAULT_CONNECTOR_COLOR = "rgb(200, 200, 200)";
+    const MINIMUM_BLAT_LENGTH = 20;
+
+    class BAMTrack extends TrackBase {
+
+        static defaults = {
+            alleleFreqThreshold: 0.2,
+            visibilityWindow: 30000,
+            showCoverage: true,
+            showAlignments: true,
+            viewAsPairs: false,
+            pairsSupported: true,
+            showSoftClips: false,
+            showAllBases: false,
+            showInsertions: true,
+            showMismatches: true,
+            height: 300,
+            coverageTrackHeight: 50
+        }
+
+        constructor(config, browser) {
+            super(config, browser);
+        }
+
+        init(config) {
+
+            this.type = "alignment";
+            this.featureSource = new BamSource(config, this.browser);
+            this.coverageTrack = new CoverageTrack(config, this);
+            this.alignmentTrack = new AlignmentTrack(config, this);
+
+            super.init(config);
+
+            this.alignmentTrack.setTop(this.coverageTrack, this.showCoverage);
+
+            if(!this.showAlignments) {
+                this._height = this.coverageTrackHeight;
+            }
+
+            // The sort object can be an array in the case of multi-locus view, however if multiple sort positions
+            // are present for a given reference frame the last one will take precedence
+            if (config.sort) {
+                if (Array.isArray(config.sort)) {
+                    // Legacy support
+                    this.assignSort(config.sort[0]);
+                } else {
+                    this.assignSort(config.sort);
+                }
+            }
+
+        }
+
+        set height(h) {
+            this._height = h;
+            if (this.showAlignments) {
+                this.alignmentTrack.height = this.showCoverage ? h - this.coverageTrackHeight : h;
+            }
+        }
+
+        get height() {
+            return this._height
+        }
+
+        get minTemplateLength() {
+            const configMinTLEN = this.config.minTLEN !== undefined ? this.config.minTLEN : this.config.minFragmentLength;
+            return (configMinTLEN !== undefined) ? configMinTLEN :
+                this._pairedEndStats ? this._pairedEndStats.minTLEN : 0
+        }
+
+        get maxTemplateLength() {
+            const configMaxTLEN = this.config.maxTLEN !== undefined ? this.config.maxTLEN : this.config.maxFragmentLength;
+            return (configMaxTLEN !== undefined) ? configMaxTLEN :
+                this._pairedEndStats ? this._pairedEndStats.maxTLEN : 1000
+        }
+
+        sort(options) {
+            options = this.assignSort(options);
+
+            for (let vp of this.trackView.viewports) {
+                if (vp.containsPosition(options.chr, options.position)) {
+                    const alignmentContainer = vp.cachedFeatures;
+                    if (alignmentContainer) {
+                        alignmentContainer.sortRows(options);
+                        vp.repaint();
+                    }
+                }
+            }
+        }
+
+        /**
+         * Fix syntax problems for sort options.
+         * @param options
+         */
+        assignSort(options) {
+            // convert old syntax
+            if (options.locus) {
+                const range = parseLocusString$1(options.locus);
+                options.chr = range.chr;
+                options.position = range.start;
+            } else {
+                options.position--;
+            }
+            options.direction = options.direction === "ASC" || options.direction === true;
+
+            // chr aliasing
+            options.chr = this.browser.genome.getChromosomeName(options.chr);
+            this.sortObject = options;
+
+            return this.sortObject
+        }
+
+        async getFeatures(chr, bpStart, bpEnd, bpPerPixel, viewport) {
+
+            const alignmentContainer = await this.featureSource.getAlignments(chr, bpStart, bpEnd);
+
+            if (alignmentContainer.paired && !this._pairedEndStats && !this.config.maxFragmentLength) {
+                const pairedEndStats = new PairedEndStats(alignmentContainer.alignments, this.config);
+                if (pairedEndStats.totalCount > 99) {
+                    this._pairedEndStats = pairedEndStats;
+                }
+            }
+            alignmentContainer.alignments = undefined;  // Don't need to hold onto these anymore
+
+            const sort = this.sortObject;
+            if (sort) {
+                if (sort.chr === chr && sort.position >= bpStart && sort.position <= bpEnd) {
+                    alignmentContainer.sortRows(sort);
+                }
+            }
+
+            return alignmentContainer
+        }
+
+
+        /**
+         * Compute the pixel height required to display all content.  This is not the same as the viewport height
+         * (track.height) which might include a scrollbar.
+         *
+         * @param alignmentContainer
+         * @returns {number}
+         */
+        computePixelHeight(alignmentContainer) {
+            return (this.showCoverage ? this.coverageTrackHeight : 0) +
+                (this.showAlignments ? this.alignmentTrack.computePixelHeight(alignmentContainer) : 0)
+        }
+
+        draw(options) {
+
+            IGVGraphics.fillRect(options.context, 0, options.pixelTop, options.pixelWidth, options.pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+
+            if (true === this.showCoverage && this.coverageTrackHeight > 0) {
+                this.trackView.axisCanvas.style.display = 'block';
+                this.coverageTrack.draw(options);
+            } else {
+                this.trackView.axisCanvas.style.display = 'none';
+            }
+
+            if (true === this.showAlignments) {
+                this.alignmentTrack.setTop(this.coverageTrack, this.showCoverage);
+                this.alignmentTrack.draw(options);
+            }
+        }
+
+        paintAxis(ctx, pixelWidth, pixelHeight) {
+
+            this.coverageTrack.paintAxis(ctx, pixelWidth, this.coverageTrackHeight);
+
+            // if (this.browser.isMultiLocusMode()) {
+            //     ctx.clearRect(0, 0, pixelWidth, pixelHeight);
+            // } else {
+            //     this.coverageTrack.paintAxis(ctx, pixelWidth, this.coverageTrackHeight);
+            // }
+        }
+
+        contextMenuItemList(config) {
+            return this.alignmentTrack.contextMenuItemList(config)
+        }
+
+        popupData(clickState) {
+            if (true === this.showCoverage && clickState.y >= this.coverageTrack.top && clickState.y < this.coverageTrackHeight) {
+                return this.coverageTrack.popupData(clickState)
+            } else {
+                return this.alignmentTrack.popupData(clickState)
+            }
+        }
+
+        /**
+         * Return the features (alignment, coverage, downsampled interval) clicked on.  Needed for "onclick" event.
+         * @param clickState
+         * @param features
+         */
+        clickedFeatures(clickState) {
+
+            let clickedObject;
+            if (true === this.showCoverage && clickState.y >= this.coverageTrack.top && clickState.y < this.coverageTrackHeight) {
+                clickedObject = this.coverageTrack.getClickedObject(clickState);
+            } else {
+                clickedObject = this.alignmentTrack.getClickedObject(clickState);
+            }
+            return clickedObject ? [clickedObject] : undefined
+        }
+
+        hoverText(clickState) {
+            if (true === this.showCoverage && clickState.y >= this.coverageTrack.top && clickState.y < this.coverageTrackHeight) {
+                const clickedObject = this.coverageTrack.getClickedObject(clickState);
+                if (clickedObject) {
+                    return clickedObject.hoverText()
+                }
+            }
+
+        }
+
+        menuItemList() {
+
+
+            // Start with overage track items
+            let menuItems = [];
+
+            menuItems = menuItems.concat(MenuUtils.numericDataMenuItems(this.trackView));
+
+            // Color by items
+            menuItems.push('<hr/>');
+            const $e = $$1('<div class="igv-track-menu-category">');
+            $e.text('Color by:');
+            menuItems.push({name: undefined, object: $e, click: undefined, init: undefined});
+
+            const colorByMenuItems = [{key: 'strand', label: 'read strand'}];
+            if (this.alignmentTrack.hasPairs) {
+                colorByMenuItems.push({key: 'firstOfPairStrand', label: 'first-of-pair strand'});
+                colorByMenuItems.push({key: 'pairOrientation', label: 'pair orientation'});
+                colorByMenuItems.push({key: 'tlen', label: 'insert size (TLEN)'});
+                colorByMenuItems.push({key: 'unexpectedPair', label: 'pair orientation & insert size (TLEN)'});
+            }
+            const tagLabel = 'tag' + (this.alignmentTrack.colorByTag ? ' (' + this.alignmentTrack.colorByTag + ')' : '');
+            colorByMenuItems.push({key: 'tag', label: tagLabel});
+            for (let item of colorByMenuItems) {
+                const selected = (this.alignmentTrack.colorBy === item.key);
+                menuItems.push(this.colorByCB(item, selected));
+            }
+
+            // Show coverage / alignment options
+            const adjustTrackHeight = () => {
+                if (!this.autoHeight) {
+                    const h =
+                        (this.showCoverage ? this.coverageTrackHeight : 0) +
+                        (this.showAlignments ? this.alignmentTrack.height : 0);
+                    this.trackView.setTrackHeight(h);
+                }
+            };
+
+            menuItems.push('<hr/>');
+            menuItems.push({
+                object: $$1(createCheckbox("Show Coverage", this.showCoverage)),
+                click: () => {
+                    this.showCoverage = !this.showCoverage;
+                    adjustTrackHeight();
+                    this.trackView.checkContentHeight();
+                    this.trackView.repaintViews();
+                }
+            });
+            menuItems.push({
+                object: $$1(createCheckbox("Show Alignments", this.showAlignments)),
+                click: () => {
+                    this.showAlignments = !this.showAlignments;
+                    adjustTrackHeight();
+                    this.trackView.checkContentHeight();
+                    this.trackView.repaintViews();
+                }
+            });
+
+            // Show all bases
+            menuItems.push('<hr/>');
+            menuItems.push({
+                object: $$1(createCheckbox("Show all bases", this.showAllBases)),
+                click: () => {
+                    this.showAllBases = !this.showAllBases;
+                    this.config.showAllBases = this.showAllBases;
+                    this.trackView.repaintViews();
+                }
+            });
+
+            // Show mismatches
+            menuItems.push('<hr/>');
+            menuItems.push({
+                object: $$1(createCheckbox("Show mismatches", this.showMismatches)),
+                click: () => {
+                    this.showMismatches = !this.showMismatches;
+                    this.config.showMismatches = this.showMismatches;
+                    this.trackView.repaintViews();
+                }
+            });
+
+            // Insertions
+            menuItems.push({
+                object: $$1(createCheckbox("Show insertions", this.showInsertions)),
+                click: () => {
+                    this.showInsertions = !this.showInsertions;
+                    this.config.showInsertions = this.showInsertions;
+                    this.getCachedAlignmentContainers();
+                    this.trackView.repaintViews();
+                }
+            });
+
+            // Soft clips
+            menuItems.push({
+                object: $$1(createCheckbox("Show soft clips", this.showSoftClips)),
+                click: () => {
+                    this.showSoftClips = !this.showSoftClips;
+                    this.config.showSoftClips = this.showSoftClips;
+                    this.featureSource.setShowSoftClips(this.showSoftClips);
+                    const alignmentContainers = this.getCachedAlignmentContainers();
+                    for (let ac of alignmentContainers) {
+                        ac.setShowSoftClips(this.showSoftClips);
+                    }
+                    this.trackView.repaintViews();
+                }
+            });
+
+            // View as pairs
+            if (this.pairsSupported && this.alignmentTrack.hasPairs) {
+                menuItems.push('<hr/>');
+                menuItems.push({
+                    object: $$1(createCheckbox("View as pairs", this.viewAsPairs)),
+                    click: () => {
+                        this.viewAsPairs = !this.viewAsPairs;
+                        this.config.viewAsPairs = this.viewAsPairs;
+                        this.featureSource.setViewAsPairs(this.viewAsPairs);
+                        const alignmentContainers = this.getCachedAlignmentContainers();
+                        for (let ac of alignmentContainers) {
+                            ac.setViewAsPairs(this.viewAsPairs);
+                        }
+                        this.trackView.repaintViews();
+                    }
+                });
+            }
+
+            // Add chords to JBrowse circular view, if present
+            if (this.browser.circularView &&
+                (this.alignmentTrack.hasPairs || this.alignmentTrack.hasSupplemental)) {
+                menuItems.push('<hr/>');
+                if (this.alignmentTrack.hasPairs) {
+                    menuItems.push({
+                        label: 'Add discordant pairs to circular view',
+                        click: () => {
+                            for (let viewport of this.trackView.viewports) {
+                                this.addPairedChordsForViewport(viewport);
+                            }
+                        }
+                    });
+                }
+                if (this.alignmentTrack.hasSupplemental) {
+                    menuItems.push({
+                        label: 'Add split reads to circular view',
+                        click: () => {
+                            for (let viewport of this.trackView.viewports) {
+                                this.addSplitChordsForViewport(viewport);
+                            }
+                        }
+                    });
+                }
+            }
+
+
+            // Display mode
+            menuItems.push('<hr/>');
+            const $dml = $$1('<div class="igv-track-menu-category">');
+            $dml.text('Display mode:');
+            menuItems.push({name: undefined, object: $dml, click: undefined, init: undefined});
+
+            menuItems.push({
+                object: $$1(createCheckbox("expand", this.alignmentTrack.displayMode === "EXPANDED")),
+                click: () => {
+                    this.alignmentTrack.displayMode = "EXPANDED";
+                    this.config.displayMode = "EXPANDED";
+                    this.trackView.checkContentHeight();
+                    this.trackView.repaintViews();
+                }
+            });
+
+            menuItems.push({
+                object: $$1(createCheckbox("squish", this.alignmentTrack.displayMode === "SQUISHED")),
+                click: () => {
+                    this.alignmentTrack.displayMode = "SQUISHED";
+                    this.config.displayMode = "SQUISHED";
+                    this.trackView.checkContentHeight();
+                    this.trackView.repaintViews();
+                }
+            });
+
+            return menuItems
+        }
+
+
+        /**
+         * Create a "color by" checkbox menu item, optionally initially checked
+         * @param menuItem
+         * @param showCheck
+         * @returns {{init: undefined, name: undefined, click: clickHandler, object: (jQuery|HTMLElement|jQuery.fn.init)}}
+         */
+        colorByCB(menuItem, showCheck) {
+            const $e = $$1(createCheckbox(menuItem.label, showCheck));
+            const clickHandler = (ev) => {
+
+                if (menuItem.key !== 'tag') {
+                    if (menuItem.key === this.alignmentTrack.colorBy) {
+                        this.alignmentTrack.colorBy = 'none';
+                        this.config.colorBy = 'none';
+                        this.trackView.repaintViews();
+                    } else {
+                        this.alignmentTrack.colorBy = menuItem.key;
+                        this.config.colorBy = menuItem.key;
+                        this.trackView.repaintViews();
+                    }
+                } else {
+                    this.browser.inputDialog.present({
+                        label: 'Tag Name',
+                        value: this.alignmentTrack.colorByTag ? this.alignmentTrack.colorByTag : '',
+                        callback: (tag) => {
+                            if (tag) {
+                                this.alignmentTrack.colorBy = 'tag';
+                                this.alignmentTrack.colorByTag = tag;
+                                if (!this.alignmentTrack.tagColors) {
+                                    this.alignmentTrack.tagColors = new PaletteColorTable("Set1");
+                                }
+                            } else {
+                                this.alignmentTrack.colorBy = 'none';
+                                this.alignmentTrack.colorByTag = '';
+                            }
+                            this.trackView.repaintViews();
+                        }
+                    }, ev);
+
+                }
+
+            };
+
+            return {name: undefined, object: $e, click: clickHandler, init: undefined}
+        }
+
+        /**
+         * Return the current state of the track.  Used to create sessions and bookmarks.
+         *
+         * @returns {*|{}}
+         */
+        getState() {
+
+            const config = super.getState();
+
+            if (this.sortObject) {
+                config.sort = {
+                    chr: this.sortObject.chr,
+                    position: this.sortObject.position + 1,
+                    option: this.sortObject.option,
+                    direction: this.sortObject.direction ? "ASC" : "DESC"
+                };
+            }
+
+            return config
+        }
+
+        getCachedAlignmentContainers() {
+            return this.trackView.viewports.map(vp => vp.cachedFeatures)
+        }
+
+        get dataRange() {
+            return this.coverageTrack.dataRange
+        }
+
+        set dataRange(dataRange) {
+            this.coverageTrack.dataRange = dataRange;
+        }
+
+        get logScale() {
+            return this.coverageTrack.logScale
+        }
+
+        set logScale(logScale) {
+            this.coverageTrack.logScale = logScale;
+        }
+
+        get autoscale() {
+            return this.coverageTrack.autoscale
+        }
+
+        set autoscale(autoscale) {
+            this.coverageTrack.autoscale = autoscale;
+        }
+
+        /**
+         * Add chords to the circular view for the given viewport, represented by its reference frame
+         * @param refFrame
+         */
+        addPairedChordsForViewport(viewport) {
+
+            const maxTemplateLength = this.maxTemplateLength;
+            const inView = [];
+            const refFrame = viewport.referenceFrame;
+            for (let a of viewport.cachedFeatures.allAlignments()) {
+                if (a.end >= refFrame.start
+                    && a.start <= refFrame.end) {
+                    if (a.paired) {
+                        if (a.end - a.start > maxTemplateLength) {
+                            inView.push(a);
+                        }
+                    } else {
+                        if (a.mate
+                            && a.mate.chr
+                            && (a.mate.chr !== a.chr || Math.max(a.fragmentLength) > maxTemplateLength)) {
+                            inView.push(a);
+                        }
+                    }
+                }
+            }
+            const chords = makePairedAlignmentChords(inView);
+            sendChords(chords, this, refFrame, 0.02);
+        }
+
+        addSplitChordsForViewport(viewport) {
+
+            const inView = [];
+            const refFrame = viewport.referenceFrame;
+            for (let a of viewport.cachedFeatures.allAlignments()) {
+
+                const sa = a.hasTag('SA');
+                if (a.end >= refFrame.start && a.start <= refFrame.end && sa) {
+                    inView.push(a);
+                }
+            }
+
+            const chords = makeSupplementalAlignmentChords(inView);
+            sendChords(chords, this, refFrame, 0.02);
+        }
+    }
+
+
+    class CoverageTrack {
+
+        constructor(config, parent) {
+            this.parent = parent;
+            this.featureSource = parent.featureSource;
+
+            this.paintAxis = paintAxis;
+            this.top = 0;
+
+            this.autoscale = config.autoscale || config.max === undefined;
+            if (!this.autoscale) {
+                this.dataRange = {
+                    min: config.min || 0,
+                    max: config.max
+                };
+            }
+
+        }
+
+        get height() {
+            return this.parent.coverageTrackHeight
+        }
+
+        draw(options) {
+
+            const pixelTop = options.pixelTop;
+            pixelTop + options.pixelHeight;
+            const nucleotideColors = this.parent.browser.nucleotideColors;
+
+            if (pixelTop > this.height) {
+                return //scrolled out of view
+            }
+
+            const ctx = options.context;
+            const alignmentContainer = options.features;
+            const coverageMap = alignmentContainer.coverageMap;
+
+            let sequence;
+            if (coverageMap.refSeq) {
+                sequence = coverageMap.refSeq.toUpperCase();
+            }
+
+            const bpPerPixel = options.bpPerPixel;
+            const bpStart = options.bpStart;
+            const pixelWidth = options.pixelWidth;
+            const bpEnd = bpStart + pixelWidth * bpPerPixel + 1;
+
+            // paint for all coverage buckets
+            // If alignment track color is != default, use it
+            let color;
+            if (this.parent.coverageColor) {
+                color = this.parent.coverageColor;
+            } else if (this.parent.color  && typeof this.parent.color !== "function") {
+                color = IGVColor.darkenLighten(this.parent.color, -35);
+            } else {
+                color = DEFAULT_COVERAGE_COLOR;
+            }
+            IGVGraphics.setProperties(ctx, {
+                fillStyle: color,
+                strokeStyle: color
+            });
+
+            const w = Math.max(1, Math.ceil(1.0 / bpPerPixel));
+            for (let i = 0, len = coverageMap.coverage.length; i < len; i++) {
+
+                const bp = (coverageMap.bpStart + i);
+                if (bp < bpStart) continue
+                if (bp > bpEnd) break
+
+                const item = coverageMap.coverage[i];
+                if (!item) continue
+
+                const h = Math.round((item.total / this.dataRange.max) * this.height);
+                const y = this.height - h;
+                const x = Math.floor((bp - bpStart) / bpPerPixel);
+
+
+                // IGVGraphics.setProperties(ctx, {fillStyle: "rgba(0, 200, 0, 0.25)", strokeStyle: "rgba(0, 200, 0, 0.25)" });
+                IGVGraphics.fillRect(ctx, x, y, w, h);
+            }
+
+            // coverage mismatch coloring -- don't try to do this in above loop, color bar will be overwritten when w<1
+            if (sequence) {
+                for (let i = 0, len = coverageMap.coverage.length; i < len; i++) {
+
+                    const bp = (coverageMap.bpStart + i);
+                    if (bp < bpStart) continue
+                    if (bp > bpEnd) break
+
+                    const item = coverageMap.coverage[i];
+                    if (!item) continue
+
+                    const h = (item.total / this.dataRange.max) * this.height;
+                    let y = this.height - h;
+                    const x = Math.floor((bp - bpStart) / bpPerPixel);
+
+                    const refBase = sequence[i];
+                    if (item.isMismatch(refBase)) {
+                        IGVGraphics.setProperties(ctx, {fillStyle: nucleotideColors[refBase]});
+                        IGVGraphics.fillRect(ctx, x, y, w, h);
+
+                        let accumulatedHeight = 0.0;
+                        for (let nucleotide of ["A", "C", "T", "G"]) {
+
+                            const count = item["pos" + nucleotide] + item["neg" + nucleotide];
+
+                            // non-logoritmic
+                            const hh = (count / this.dataRange.max) * this.height;
+                            y = (this.height - hh) - accumulatedHeight;
+                            accumulatedHeight += hh;
+                            IGVGraphics.setProperties(ctx, {fillStyle: nucleotideColors[nucleotide]});
+                            IGVGraphics.fillRect(ctx, x, y, w, hh);
+                        }
+                    }
+                }
+            }
+        }
+
+        getClickedObject(clickState) {
+
+            let features = clickState.viewport.cachedFeatures;
+            if (!features || features.length === 0) return
+
+            const genomicLocation = Math.floor(clickState.genomicLocation);
+            const coverageMap = features.coverageMap;
+            const coverageMapIndex = Math.floor(genomicLocation - coverageMap.bpStart);
+            return coverageMap.coverage[coverageMapIndex]
+        }
+
+        popupData(clickState) {
+
+            const nameValues = [];
+
+            const coverage = this.getClickedObject(clickState);
+            if (coverage) {
+                const genomicLocation = Math.floor(clickState.genomicLocation);
+                const referenceFrame = clickState.viewport.referenceFrame;
+
+                nameValues.push(referenceFrame.chr + ":" + numberFormatter$1(1 + genomicLocation));
+
+                nameValues.push({name: 'Total Count', value: coverage.total});
+
+                // A
+                let tmp = coverage.posA + coverage.negA;
+                if (tmp > 0) tmp = tmp.toString() + " (" + Math.round((tmp / coverage.total) * 100.0) + "%, " + coverage.posA + "+, " + coverage.negA + "- )";
+                nameValues.push({name: 'A', value: tmp});
+
+                // C
+                tmp = coverage.posC + coverage.negC;
+                if (tmp > 0) tmp = tmp.toString() + " (" + Math.round((tmp / coverage.total) * 100.0) + "%, " + coverage.posC + "+, " + coverage.negC + "- )";
+                nameValues.push({name: 'C', value: tmp});
+
+                // G
+                tmp = coverage.posG + coverage.negG;
+                if (tmp > 0) tmp = tmp.toString() + " (" + Math.round((tmp / coverage.total) * 100.0) + "%, " + coverage.posG + "+, " + coverage.negG + "- )";
+                nameValues.push({name: 'G', value: tmp});
+
+                // T
+                tmp = coverage.posT + coverage.negT;
+                if (tmp > 0) tmp = tmp.toString() + " (" + Math.round((tmp / coverage.total) * 100.0) + "%, " + coverage.posT + "+, " + coverage.negT + "- )";
+                nameValues.push({name: 'T', value: tmp});
+
+                // N
+                tmp = coverage.posN + coverage.negN;
+                if (tmp > 0) tmp = tmp.toString() + " (" + Math.round((tmp / coverage.total) * 100.0) + "%, " + coverage.posN + "+, " + coverage.negN + "- )";
+                nameValues.push({name: 'N', value: tmp});
+
+                nameValues.push('<HR/>');
+                nameValues.push({name: 'DEL', value: coverage.del.toString()});
+                nameValues.push({name: 'INS', value: coverage.ins.toString()});
+            }
+
+            return nameValues
+
+        }
+
+    }
+
+    class AlignmentTrack {
+
+        constructor(config, parent) {
+
+            this.parent = parent;
+            this.browser = parent.browser;
+            this.featureSource = parent.featureSource;
+            this.top = 0 === config.coverageTrackHeight ? 0 : config.coverageTrackHeight + 5;
+            this.displayMode = config.displayMode || "EXPANDED";
+            this.alignmentRowHeight = config.alignmentRowHeight || 14;
+            this.squishedRowHeight = config.squishedRowHeight || 3;
+
+            this.negStrandColor = config.negStrandColor || "rgba(150, 150, 230, 0.75)";
+            this.posStrandColor = config.posStrandColor || "rgba(230, 150, 150, 0.75)";
+            this.insertionColor = config.insertionColor || "rgb(138, 94, 161)";
+            this.insertionTextColor = config.insertionTextColor || "white";
+            this.showInsertionText = config.showInsertionText === undefined ? false : !!config.showInsertionText;
+            this.deletionColor = config.deletionColor || "black";
+            this.deletionTextColor = config.deletionTextColor || "black";
+            this.showDeletionText = config.showDeletionText === undefined ? false : !!config.showDeletionText;
+            this.skippedColor = config.skippedColor || "rgb(150, 170, 170)";
+            this.pairConnectorColor = config.pairConnectorColor;
+
+            this.smallTLENColor = config.smallTLENColor || config.smallFragmentLengthColor || "rgb(0, 0, 150)";
+            this.largeTLENColor = config.largeTLENColor || config.largeFragmentLengthColor || "rgb(200, 0, 0)";
+
+            this.pairOrientation = config.pairOrienation || 'fr';
+            this.pairColors = {};
+            this.pairColors["RL"] = config.rlColor || "rgb(0, 150, 0)";
+            this.pairColors["RR"] = config.rrColor || "rgb(20, 50, 200)";
+            this.pairColors["LL"] = config.llColor || "rgb(0, 150, 150)";
+
+            this.colorBy = config.colorBy || "unexpectedPair";
+            this.colorByTag = config.colorByTag ? config.colorByTag.toUpperCase() : undefined;
+            this.bamColorTag = config.bamColorTag === undefined ? "YC" : config.bamColorTag;
+
+            this.hideSmallIndels = config.hideSmallIndels;
+            this.indelSizeThreshold = config.indelSizeThreshold || 1;
+
+            this.hasPairs = false;   // Until proven otherwise
+            this.hasSupplemental = false;
+        }
+
+        setTop(coverageTrack, showCoverage) {
+            this.top = (0 === coverageTrack.height || false === showCoverage) ? 0 : (5 + coverageTrack.height);
+        }
+
+        /**
+         * Compute the pixel height required to display all content.
+         *
+         * @param alignmentContainer
+         * @returns {number|*}
+         */
+        computePixelHeight(alignmentContainer) {
+
+            if (alignmentContainer.packedAlignmentRows) {
+                const h = alignmentContainer.hasDownsampledIntervals() ? downsampleRowHeight + alignmentStartGap : 0;
+                const alignmentRowHeight = this.displayMode === "SQUISHED" ?
+                    this.squishedRowHeight :
+                    this.alignmentRowHeight;
+                return h + (alignmentRowHeight * alignmentContainer.packedAlignmentRows.length) + 5
+            } else {
+                return 0
+            }
+        }
+
+        draw(options) {
+
+            const alignmentContainer = options.features;
+            const ctx = options.context;
+            const bpPerPixel = options.bpPerPixel;
+            const bpStart = options.bpStart;
+            const pixelWidth = options.pixelWidth;
+            const bpEnd = bpStart + pixelWidth * bpPerPixel + 1;
+            const showSoftClips = this.parent.showSoftClips;
+            const showAllBases = this.parent.showAllBases;
+            const nucleotideColors = this.browser.nucleotideColors;
+
+            //alignmentContainer.repack(bpPerPixel, showSoftClips);
+            const packedAlignmentRows = alignmentContainer.packedAlignmentRows;
+
+
+            ctx.save();
+
+            let referenceSequence = alignmentContainer.sequence;
+            if (referenceSequence) {
+                referenceSequence = referenceSequence.toUpperCase();
+            }
+            let alignmentRowYInset = 0;
+
+            let pixelTop = options.pixelTop;
+            if (this.top) {
+                ctx.translate(0, this.top);
+            }
+            const pixelBottom = pixelTop + options.pixelHeight;
+
+            if (alignmentContainer.hasDownsampledIntervals()) {
+                alignmentRowYInset = downsampleRowHeight + alignmentStartGap;
+
+                alignmentContainer.downsampledIntervals.forEach(function (interval) {
+                    var xBlockStart = (interval.start - bpStart) / bpPerPixel,
+                        xBlockEnd = (interval.end - bpStart) / bpPerPixel;
+
+                    if (xBlockEnd - xBlockStart > 5) {
+                        xBlockStart += 1;
+                        xBlockEnd -= 1;
+                    }
+                    IGVGraphics.fillRect(ctx, xBlockStart, 2, (xBlockEnd - xBlockStart), downsampleRowHeight - 2, {fillStyle: "black"});
+                });
+
+            } else {
+                alignmentRowYInset = 0;
+            }
+
+            // Transient variable -- rewritten on every draw, used for click object selection
+            this.alignmentsYOffset = alignmentRowYInset;
+            const alignmentRowHeight = this.displayMode === "SQUISHED" ?
+                this.squishedRowHeight :
+                this.alignmentRowHeight;
+
+            if (packedAlignmentRows) {
+
+                const nRows = packedAlignmentRows.length;
+
+                for (let rowIndex = 0; rowIndex < nRows; rowIndex++) {
+
+                    const alignmentRow = packedAlignmentRows[rowIndex];
+                    const alignmentY = alignmentRowYInset + (alignmentRowHeight * rowIndex);
+                    const alignmentHeight = alignmentRowHeight <= 4 ? alignmentRowHeight : alignmentRowHeight - 2;
+
+                    if (alignmentY > pixelBottom) {
+                        break
+                    } else if (alignmentY + alignmentHeight < pixelTop) {
+                        continue
+                    }
+
+                    for (let alignment of alignmentRow.alignments) {
+
+                        this.hasPairs = this.hasPairs || alignment.isPaired();
+                        if (this.browser.circularView) {
+                            // This is an expensive check, only do it if needed
+                            this.hasSupplemental = this.hasSupplemental || alignment.hasTag('SA');
+                        }
+
+                        if ((alignment.start + alignment.lengthOnRef) < bpStart) continue
+                        if (alignment.start > bpEnd) break
+                        if (true === alignment.hidden) {
+                            continue
+                        }
+
+                        if (alignment instanceof PairedAlignment) {
+
+                            drawPairConnector.call(this, alignment, alignmentY, alignmentHeight);
+
+                            drawSingleAlignment.call(this, alignment.firstAlignment, alignmentY, alignmentHeight);
+
+                            if (alignment.secondAlignment) {
+                                drawSingleAlignment.call(this, alignment.secondAlignment, alignmentY, alignmentHeight);
+                            }
+
+                        } else {
+                            drawSingleAlignment.call(this, alignment, alignmentY, alignmentHeight);
+                        }
+
+                    }
+                }
+            }
+            ctx.restore();
+
+            // alignment is a PairedAlignment
+            function drawPairConnector(alignment, yRect, alignmentHeight) {
+
+                var connectorColor = this.getConnectorColor(alignment.firstAlignment),
+                    xBlockStart = (alignment.connectingStart - bpStart) / bpPerPixel,
+                    xBlockEnd = (alignment.connectingEnd - bpStart) / bpPerPixel,
+                    yStrokedLine = yRect + alignmentHeight / 2;
+
+                if ((alignment.connectingEnd) < bpStart || alignment.connectingStart > bpEnd) {
+                    return
+                }
+                if (alignment.mq <= 0) {
+                    connectorColor = IGVColor.addAlpha(connectorColor, 0.15);
+                }
+                IGVGraphics.setProperties(ctx, {fillStyle: connectorColor, strokeStyle: connectorColor});
+                IGVGraphics.strokeLine(ctx, xBlockStart, yStrokedLine, xBlockEnd, yStrokedLine);
+
+            }
+
+            function drawSingleAlignment(alignment, yRect, alignmentHeight) {
+
+
+                if ((alignment.start + alignment.lengthOnRef) < bpStart || alignment.start > bpEnd) {
+                    return
+                }
+
+                const blocks = showSoftClips ? alignment.blocks : alignment.blocks.filter(b => 'S' !== b.type);
+
+                let alignmentColor = this.getAlignmentColor(alignment);
+                const outlineColor = alignmentColor;
+                if (alignment.mq <= 0) {
+                    alignmentColor = IGVColor.addAlpha(alignmentColor, 0.15);
+                }
+                IGVGraphics.setProperties(ctx, {fillStyle: alignmentColor, strokeStyle: outlineColor});
+
+                // Save bases to draw into an array for later drawing, so they can be overlaid on insertion blocks,
+                // which is relevant if we have insertions with size label
+                const basesToDraw = [];
+
+                for (let b = 0; b < blocks.length; b++) {   // Can't use forEach here -- we need ability to break
+
+                    const block = blocks[b];
+
+                    // Somewhat complex test, neccessary to insure gaps are drawn.
+                    // If this is not the last block, and the next block starts before the orign (off screen to left) then skip.
+                    if ((b !== blocks.length - 1) && blocks[b + 1].start < bpStart) continue
+
+                    // drawBlock returns bases to draw, which are drawn on top of insertion blocks (if they're wider than
+                    // the space between two bases) like in Java IGV
+                    basesToDraw.push(...drawBlock.call(this, block, b));
+
+                    if ((block.start + block.len) > bpEnd) {
+                        // Do this after drawBlock to insure gaps are drawn
+                        break
+                    }
+                }
+
+                if (alignment.gaps) {
+                    const yStrokedLine = yRect + alignmentHeight / 2;
+                    for (let gap of alignment.gaps) {
+                        const sPixel = (gap.start - bpStart) / bpPerPixel;
+                        const ePixel = ((gap.start + gap.len) - bpStart) / bpPerPixel;
+                        const lineWidth = ePixel - sPixel;
+                        const gapLenText = gap.len.toString();
+                        const gapTextWidth = gapLenText.length * 6;
+                        const gapCenter = sPixel + (lineWidth / 2);
+
+                        const color = ("D" === gap.type) ? this.deletionColor : this.skippedColor;
+
+                        IGVGraphics.strokeLine(ctx, sPixel, yStrokedLine, ePixel, yStrokedLine, {
+                            strokeStyle: color,
+                            lineWidth: 2,
+                        });
+
+                        // Add gap width as text like Java IGV if it fits nicely and is a multi-base gap
+                        if (this.showDeletionText && gap.len > 1 && lineWidth >= gapTextWidth + 8) {
+                            const textStart = gapCenter - (gapTextWidth / 2);
+                            IGVGraphics.fillRect(ctx, textStart - 1, yRect - 1, gapTextWidth + 2, 12, {fillStyle: "white"});
+                            IGVGraphics.fillText(ctx, gapLenText, textStart, yRect + 10, {
+                                'font': 'normal 10px monospace',
+                                'fillStyle': this.deletionTextColor,
+                            });
+                        }
+                    }
+                }
+
+                if (alignment.insertions && this.parent.showInsertions) {
+                    let lastXBlockStart = -1;
+                    for (let insertionBlock of alignment.insertions) {
+                        if (this.hideSmallIndels && insertionBlock.len <= this.indelSizeThreshold) {
+                            continue
+                        }
+                        if (insertionBlock.start < bpStart) {
+                            continue
+                        }
+                        if (insertionBlock.start > bpEnd) {
+                            break
+                        }
+
+                        const refOffset = insertionBlock.start - bpStart;
+                        const insertLenText = insertionBlock.len.toString();
+
+                        const textPixelWidth = 2 + (insertLenText.length * 6);
+                        const basePixelWidth = (!this.showInsertionText || insertionBlock.len === 1)
+                            ? 2
+                            : Math.round(insertionBlock.len / bpPerPixel);
+                        const widthBlock = Math.max(Math.min(textPixelWidth, basePixelWidth), 2);
+
+                        const xBlockStart = (refOffset / bpPerPixel) - (widthBlock / 2);
+                        if ((xBlockStart - lastXBlockStart) > 2) {
+                            const props = {fillStyle: this.insertionColor};
+
+                            // Draw decorations like Java IGV to make an 'I' shape
+                            IGVGraphics.fillRect(ctx, xBlockStart - 2, yRect, widthBlock + 4, 2, props);
+                            IGVGraphics.fillRect(ctx, xBlockStart, yRect + 2, widthBlock, alignmentHeight - 4, props);
+                            IGVGraphics.fillRect(ctx, xBlockStart - 2, yRect + alignmentHeight - 2, widthBlock + 4, 2, props);
+
+                            // Show # of inserted bases as text if it's a multi-base insertion and the insertion block
+                            // is wide enough to hold text (its size is capped at the text label size, but can be smaller
+                            // if the browser is zoomed out and the insertion is small)
+                            if (this.showInsertionText && insertionBlock.len > 1 && basePixelWidth > textPixelWidth) {
+                                IGVGraphics.fillText(ctx, insertLenText, xBlockStart + 1, yRect + 10, {
+                                    'font': 'normal 10px monospace',
+                                    'fillStyle': this.insertionTextColor,
+                                });
+                            }
+                            lastXBlockStart = xBlockStart;
+                        }
+                    }
+                }
+
+                basesToDraw.forEach(({bbox, baseColor, readChar}) => {
+                    renderBlockOrReadChar(ctx, bpPerPixel, bbox, baseColor, readChar);
+                });
+
+
+                function drawBlock(block, b) {
+                    // Collect bases to draw for later rendering
+                    const blockBasesToDraw = [];
+
+                    const offsetBP = block.start - alignmentContainer.start;
+                    const blockStartPixel = (block.start - bpStart) / bpPerPixel;
+                    const blockEndPixel = ((block.start + block.len) - bpStart) / bpPerPixel;
+                    const blockWidthPixel = Math.max(1, blockEndPixel - blockStartPixel);
+
+                    //const arrowHeadWidthPixel = alignmentRowHeight / 2.0;
+                    const nomPixelWidthOnRef = 100 / bpPerPixel;
+                    const arrowHeadWidthPixel = Math.min(alignmentRowHeight / 2.0, nomPixelWidthOnRef / 6);
+
+                    const isSoftClip = 'S' === block.type;
+
+                    const strokeOutline =
+                        alignment.mq <= 0 ||
+                        this.highlightedAlignmentReadNamed === alignment.readName ||
+                        isSoftClip;
+
+                    let blockOutlineColor = outlineColor;
+                    if (this.highlightedAlignmentReadNamed === alignment.readName) blockOutlineColor = 'red';
+                    else if (isSoftClip) blockOutlineColor = 'rgb(50,50,50)';
+
+                    const lastBlockPositiveStrand = (true === alignment.strand && b === blocks.length - 1);
+                    const lastBlockReverseStrand = (false === alignment.strand && b === 0);
+                    const lastBlock = lastBlockPositiveStrand | lastBlockReverseStrand;
+
+                    if (lastBlock) {
+                        let xListPixel;
+                        let yListPixel;
+                        if (lastBlockPositiveStrand) {
+                            xListPixel = [
+                                blockStartPixel,
+                                blockEndPixel,
+                                blockEndPixel + arrowHeadWidthPixel,
+                                blockEndPixel,
+                                blockStartPixel,
+                                blockStartPixel];
+                            yListPixel = [
+                                yRect,
+                                yRect,
+                                yRect + (alignmentHeight / 2.0),
+                                yRect + alignmentHeight,
+                                yRect + alignmentHeight,
+                                yRect];
+
+                        }
+
+                        // Last block on - strand ?
+                        else if (lastBlockReverseStrand) {
+                            xListPixel = [
+                                blockEndPixel,
+                                blockStartPixel,
+                                blockStartPixel - arrowHeadWidthPixel,
+                                blockStartPixel,
+                                blockEndPixel,
+                                blockEndPixel];
+                            yListPixel = [
+                                yRect,
+                                yRect,
+                                yRect + (alignmentHeight / 2.0),
+                                yRect + alignmentHeight,
+                                yRect + alignmentHeight,
+                                yRect];
+
+                        }
+                        IGVGraphics.fillPolygon(ctx, xListPixel, yListPixel, {fillStyle: alignmentColor});
+
+                        if (strokeOutline) {
+                            IGVGraphics.strokePolygon(ctx, xListPixel, yListPixel, {strokeStyle: blockOutlineColor});
+                        }
+                    }
+
+                    // Internal block
+                    else {
+                        IGVGraphics.fillRect(ctx, blockStartPixel, yRect, blockWidthPixel, alignmentHeight, {fillStyle: alignmentColor});
+
+                        if (strokeOutline) {
+                            ctx.save();
+                            ctx.strokeStyle = blockOutlineColor;
+                            ctx.strokeRect(blockStartPixel, yRect, blockWidthPixel, alignmentHeight);
+                            ctx.restore();
+                        }
+                    }
+
+
+                    // Read base coloring
+
+                    if (isSoftClip ||
+                        showAllBases ||
+                        this.parent.showMismatches && (referenceSequence && alignment.seq && alignment.seq !== "*")) {
+
+                        const seq = alignment.seq ? alignment.seq.toUpperCase() : undefined;
+                        const qual = alignment.qual;
+                        const seqOffset = block.seqOffset;
+                        const widthPixel = Math.max(1, 1 / bpPerPixel);
+
+
+                        for (let i = 0, len = block.len; i < len; i++) {
+
+                            const xPixel = ((block.start + i) - bpStart) / bpPerPixel;
+
+                            if (xPixel + widthPixel < 0) continue   // Off left edge
+                            if (xPixel > pixelWidth) break  // Off right edge
+
+                            let readChar = seq ? seq.charAt(seqOffset + i) : '';
+                            const refChar = offsetBP + i >= 0 ? referenceSequence.charAt(offsetBP + i) : '';
+
+                            if (readChar === "=") {
+                                readChar = refChar;
+                            }
+                            if (readChar === "X" || refChar !== readChar || isSoftClip || showAllBases) {
+
+                                let baseColor;
+                                if (!isSoftClip && qual !== undefined && qual.length > seqOffset + i) {
+                                    const readQual = qual[seqOffset + i];
+                                    baseColor = shadedBaseColor(readQual, nucleotideColors[readChar]);
+                                } else {
+                                    baseColor = nucleotideColors[readChar];
+                                }
+                                if (baseColor) {
+                                    blockBasesToDraw.push({
+                                        bbox: {
+                                            x: xPixel,
+                                            y: yRect,
+                                            width: widthPixel,
+                                            height: alignmentHeight
+                                        },
+                                        baseColor,
+                                        readChar,
+                                    });
+                                }
+                            }
+                        }
+                    }
+
+                    return blockBasesToDraw
+                }
+
+                function renderBlockOrReadChar(context, bpp, bbox, color, char) {
+                    var threshold,
+                        center;
+
+                    threshold = 1.0 / 10.0;
+                    if (bpp <= threshold && bbox.height >= 8) {
+
+                        // render letter
+                        const fontHeight = Math.min(10, bbox.height);
+                        context.font = '' + fontHeight + 'px sans-serif';
+                        center = bbox.x + (bbox.width / 2.0);
+                        IGVGraphics.strokeText(context, char, center - (context.measureText(char).width / 2), fontHeight - 1 + bbox.y, {strokeStyle: color});
+                    } else {
+
+                        // render colored block
+                        IGVGraphics.fillRect(context, bbox.x, bbox.y, bbox.width, bbox.height, {fillStyle: color});
+                    }
+                }
+            }
+
+        };
+
+        popupData(clickState) {
+            const clickedObject = this.getClickedObject(clickState);
+            return clickedObject ? clickedObject.popupData(clickState.genomicLocation) : undefined
+        };
+
+        contextMenuItemList(clickState) {
+
+            const viewport = clickState.viewport;
+            const list = [];
+
+            const sortByOption = (option) => {
+                const cs = this.parent.sortObject;
+                const direction = (cs && cs.position === Math.floor(clickState.genomicLocation)) ? !cs.direction : true;
+                const newSortObject = {
+                    chr: viewport.referenceFrame.chr,
+                    position: Math.floor(clickState.genomicLocation),
+                    option: option,
+                    direction: direction
+                };
+                this.parent.sortObject = newSortObject;
+                viewport.cachedFeatures.sortRows(newSortObject);
+                viewport.repaint();
+            };
+            list.push('<b>Sort by...</b>');
+            list.push({label: '&nbsp; base', click: () => sortByOption("BASE")});
+            list.push({label: '&nbsp; read strand', click: () => sortByOption("STRAND")});
+            list.push({label: '&nbsp; insert size', click: () => sortByOption("INSERT_SIZE")});
+            list.push({label: '&nbsp; gap size', click: () => sortByOption("GAP_SIZE")});
+            list.push({label: '&nbsp; chromosome of mate', click: () => sortByOption("MATE_CHR")});
+            list.push({label: '&nbsp; mapping quality', click: () => sortByOption("MQ")});
+            list.push({label: '&nbsp; read name', click: () => sortByOption("READ_NAME")});
+            list.push({label: '&nbsp; aligned read length', click: () => sortByOption("ALIGNED_READ_LENGTH")});
+            list.push({
+                label: '&nbsp; tag', click: () => {
+                    const cs = this.parent.sortObject;
+                    const direction = (cs && cs.position === Math.floor(clickState.genomicLocation)) ? !cs.direction : true;
+                    const config =
+                        {
+                            label: 'Tag Name',
+                            value: this.sortByTag ? this.sortByTag : '',
+                            callback: (tag) => {
+                                if (tag) {
+                                    const newSortObject = {
+                                        chr: viewport.referenceFrame.chr,
+                                        position: Math.floor(clickState.genomicLocation),
+                                        option: "TAG",
+                                        tag: tag,
+                                        direction: direction
+                                    };
+                                    this.sortByTag = tag;
+                                    this.parent.sortObject = newSortObject;
+                                    viewport.cachedFeatures.sortRows(newSortObject);
+                                    viewport.repaint();
+                                }
+                            }
+                        };
+                    this.browser.inputDialog.present(config, clickState.event);
+                }
+            });
+            list.push('<hr/>');
+
+            const clickedObject = this.getClickedObject(clickState);
+
+            if (clickedObject) {
+
+                const showSoftClips = this.parent.showSoftClips;
+                const clickedAlignment = (typeof clickedObject.alignmentContaining === 'function') ?
+                    clickedObject.alignmentContaining(clickState.genomicLocation, showSoftClips) :
+                    clickedObject;
+                if (clickedAlignment) {
+                    if (clickedAlignment.isPaired() && clickedAlignment.isMateMapped()) {
+                        list.push({
+                            label: 'View mate in split screen',
+                            click: () => {
+                                if (clickedAlignment.mate) {
+                                    const referenceFrame = clickState.viewport.referenceFrame;
+                                    if (this.browser.genome.getChromosome(clickedAlignment.mate.chr)) {
+                                        this.highlightedAlignmentReadNamed = clickedAlignment.readName;
+                                        //this.browser.presentMultiLocusPanel(clickedAlignment, referenceFrame)
+                                        const bpWidth = referenceFrame.end - referenceFrame.start;
+                                        const frameStart = clickedAlignment.mate.position - bpWidth / 2;
+                                        const frameEnd = clickedAlignment.mate.position + bpWidth / 2;
+                                        this.browser.addMultiLocusPanel(clickedAlignment.mate.chr, frameStart, frameEnd, referenceFrame);
+                                    } else {
+                                        this.browser.alert.present(`Reference does not contain chromosome: ${clickedAlignment.mate.chr}`);
+                                    }
+                                }
+                            },
+                            init: undefined
+                        });
+                    }
+
+                    list.push({
+                        label: 'View read sequence',
+                        click: () => {
+                            const seqstring = clickedAlignment.seq; //.map(b => String.fromCharCode(b)).join("");
+                            if (!seqstring || "*" === seqstring) {
+                                this.browser.alert.present("Read sequence: *");
+                            } else {
+                                this.browser.alert.present(seqstring);
+                            }
+                        }
+                    });
+
+                    if (isSecureContext()) {
+                        list.push({
+                            label: 'Copy read sequence',
+                            click: async () => {
+                                const seq = clickedAlignment.seq; //.map(b => String.fromCharCode(b)).join("");
+                                try {
+                                    //console.log(`seq: ${seq}`)
+                                    await navigator.clipboard.writeText(seq);
+                                } catch (e) {
+                                    console.error(e);
+                                    this.browser.alert.present(`error copying sequence to clipboard ${e}`);
+                                }
+
+                            }
+                        });
+                    }
+
+                    // TODO if genome supports blat
+                    const seqstring = clickedAlignment.seq;
+                    if (seqstring && "*" != seqstring) {
+
+                        if (seqstring.length < maxSequenceSize) {
+                            list.push({
+                                label: 'BLAT read sequence',
+                                click: () => {
+                                    const sequence = clickedAlignment.isNegativeStrand() ? reverseComplementSequence(seqstring) : seqstring;
+                                    const name = `${clickedAlignment.readName} - blat`;
+                                    const title = `${this.parent.name} - ${name}`;
+                                    createBlatTrack({sequence, browser: this.browser, name, title});
+                                }
+                            });
+                        }
+
+                        const softClips = clickedAlignment.softClippedBlocks();
+                        if (softClips.left && softClips.left.len > MINIMUM_BLAT_LENGTH && softClips.left.len < maxSequenceSize) {
+                            list.push({
+                                label: 'BLAT left soft-clipped sequence',
+                                click: () => {
+                                    const clippedSequence = seqstring.substr(softClips.left.seqOffset, softClips.left.len);
+                                    const sequence = clickedAlignment.isNegativeStrand() ? reverseComplementSequence(clippedSequence) : clippedSequence;
+                                    const name = `${clickedAlignment.readName} - blat left clip`;
+                                    const title = `${this.parent.name} - ${name}`;
+                                    createBlatTrack({sequence, browser: this.browser, name, title});
+                                }
+                            });
+                        }
+                        if (softClips.right && softClips.right.len > MINIMUM_BLAT_LENGTH && softClips.right.len < maxSequenceSize) {
+                            list.push({
+                                label: 'BLAT right soft-clipped sequence',
+                                click: () => {
+                                    const clippedSequence = seqstring.substr(softClips.right.seqOffset, softClips.right.len);
+                                    const sequence = clickedAlignment.isNegativeStrand() ? reverseComplementSequence(clippedSequence) : clippedSequence;
+                                    const name = `${clickedAlignment.readName} - blat right clip`;
+                                    const title = `${this.parent.name} - ${name}`;
+                                    createBlatTrack({sequence, browser: this.browser, name, title});
+                                }
+                            });
+                        }
+                    }
+
+                    list.push('<hr/>');
+                }
+            }
+
+            // Experimental JBrowse feature
+            if (this.browser.circularView && (this.hasPairs || this.hasSupplemental)) {
+                if (this.hasPairs) {
+                    list.push({
+                        label: 'Add discordant pairs to circular view',
+                        click: () => {
+                            this.parent.addPairedChordsForViewport(viewport);
+                        }
+                    });
+                }
+                if (this.hasSupplemental) {
+                    list.push({
+                        label: 'Add split reads to circular view',
+                        click: () => {
+                            this.parent.addSplitChordsForViewport(viewport);
+                        }
+                    });
+                }
+                list.push('<hr/>');
+            }
+
+            return list
+
+        }
+
+        getClickedObject(clickState) {
+
+            const viewport = clickState.viewport;
+            const y = clickState.y;
+            const genomicLocation = clickState.genomicLocation;
+
+            const showSoftClips = this.parent.showSoftClips;
+
+            let features = viewport.cachedFeatures;
+            if (!features || features.length === 0) return
+
+            let packedAlignmentRows = features.packedAlignmentRows;
+            let downsampledIntervals = features.downsampledIntervals;
+            const alignmentRowHeight = this.displayMode === "SQUISHED" ?
+                this.squishedRowHeight :
+                this.alignmentRowHeight;
+
+            let packedAlignmentsIndex = Math.floor((y - this.top - this.alignmentsYOffset) / alignmentRowHeight);
+
+            if (packedAlignmentsIndex < 0) {
+                for (let i = 0; i < downsampledIntervals.length; i++) {
+                    if (downsampledIntervals[i].start <= genomicLocation && (downsampledIntervals[i].end >= genomicLocation)) {
+                        return downsampledIntervals[i]
+                    }
+                }
+            } else if (packedAlignmentsIndex < packedAlignmentRows.length) {
+                const alignmentRow = packedAlignmentRows[packedAlignmentsIndex];
+                const clicked = alignmentRow.alignments.filter(alignment => alignment.containsLocation(genomicLocation, showSoftClips));
+                if (clicked.length > 0) return clicked[0]
+            }
+
+            return undefined
+
+        };
+
+        /**
+         * Return the color for connectors in paired alignment view.   If explicitly set return that, otherwise return
+         * the alignment color, unless the color option can result in split colors (separte color for each mate).
+         *
+         * @param alignment
+         * @returns {string}
+         */
+        getConnectorColor(alignment) {
+
+            if (this.pairConnectorColor) {
+                return this.pairConnectorColor
+            }
+
+            switch (this.colorBy) {
+                case "strand":
+                case "firstOfPairStrand":
+                case "pairOrientation":
+                case "tag":
+                    if (this.parent.color) {
+                        return (typeof this.parent.color === "function") ? this.parent.color(alignment) : this.parent.color
+                    } else {
+                        return DEFAULT_CONNECTOR_COLOR
+                    }
+                default:
+                    return this.getAlignmentColor(alignment)
+
+            }
+        }
+
+        getAlignmentColor(alignment) {
+
+            let color = DEFAULT_ALIGNMENT_COLOR;   // The default color if nothing else applies
+            if (this.parent.color) {
+                color = (typeof this.parent.color === "function") ? this.parent.color(alignment) : this.parent.color;
+            } else {
+                color = DEFAULT_ALIGNMENT_COLOR;
+            }
+            const option = this.colorBy;
+            switch (option) {
+                case "strand":
+                    color = alignment.strand ? this.posStrandColor : this.negStrandColor;
+                    break
+
+                case "firstOfPairStrand":
+
+                    if (alignment instanceof PairedAlignment) {
+                        color = alignment.firstOfPairStrand() ? this.posStrandColor : this.negStrandColor;
+                    } else if (alignment.isPaired()) {
+
+                        if (alignment.isFirstOfPair()) {
+                            color = alignment.strand ? this.posStrandColor : this.negStrandColor;
+                        } else if (alignment.isSecondOfPair()) {
+                            color = alignment.strand ? this.negStrandColor : this.posStrandColor;
+                        } else {
+                            console.error("ERROR. Paired alignments are either first or second.");
+                        }
+                    }
+                    break
+
+                case "unexpectedPair":
+                case "pairOrientation":
+
+                    if (this.pairOrientation && alignment.pairOrientation) {
+                        const oTypes = orientationTypes[this.pairOrientation];
+                        if (oTypes) {
+                            const pairColor = this.pairColors[oTypes[alignment.pairOrientation]];
+                            if (pairColor) {
+                                color = pairColor;
+                                break
+                            }
+                        }
+                    }
+                    if ("pairOrientation" === option) {
+                        break
+                    }
+
+                case "tlen":
+                case "fragmentLength":
+
+                    if (alignment.mate && alignment.isMateMapped()) {
+                        if (alignment.mate.chr !== alignment.chr) {
+                            color = getChrColor(alignment.mate.chr);
+                        } else if (this.parent.minTemplateLength && Math.abs(alignment.fragmentLength) < this.parent.minTemplateLength) {
+                            color = this.smallTLENColor;
+                        } else if (this.parent.maxTemplateLength && Math.abs(alignment.fragmentLength) > this.parent.maxTemplateLength) {
+                            color = this.largeTLENColor;
+                        }
+                    }
+                    break
+
+                case "tag":
+                    const tagValue = alignment.tags()[this.colorByTag];
+                    if (tagValue !== undefined) {
+                        if (this.bamColorTag === this.colorByTag) {
+                            // UCSC style color option
+                            color = "rgb(" + tagValue + ")";
+                        } else {
+
+                            if (!this.tagColors) {
+                                this.tagColors = new PaletteColorTable("Set1");
+                            }
+                            color = this.tagColors.getColor(tagValue);
+                        }
+                    }
+                    break
+            }
+
+            return color
+
+        }
+    }
+
+    function shadedBaseColor(qual, baseColor) {
+
+        const minQ = 5;   //prefs.getAsInt(PreferenceManager.SAM_BASE_QUALITY_MIN),
+        const maxQ = 20;  //prefs.getAsInt(PreferenceManager.SAM_BASE_QUALITY_MAX);
+
+        let alpha;
+        if (qual < minQ) {
+            alpha = 0.1;
+        } else {
+            alpha = Math.max(0.1, Math.min(1.0, 0.1 + 0.9 * (qual - minQ) / (maxQ - minQ)));
+        }
+        // Round alpha to nearest 0.1
+        alpha = Math.round(alpha * 10) / 10.0;
+
+        if (alpha < 1) {
+            baseColor = IGVColor.addAlpha(baseColor, alpha);
+        }
+        return baseColor
+    }
+
+    const orientationTypes = {
+
+        "fr": {
+            "F1R2": "LR",
+            "F2R1": "LR",
+            "F1F2": "LL",
+            "F2F1": "LL",
+            "R1R2": "RR",
+            "R2R1": "RR",
+            "R1F2": "RL",
+            "R2F1": "RL"
+        },
+
+        "rf": {
+            "R1F2": "LR",
+            "R2F1": "LR",
+            "R1R2": "LL",
+            "R2R1": "LL",
+            "F1F2": "RR",
+            "F2F1": "RR",
+            "F1R2": "RL",
+            "F2R1": "RL"
+        },
+
+        "ff": {
+            "F2F1": "LR",
+            "R1R2": "LR",
+            "F2R1": "LL",
+            "R1F2": "LL",
+            "R2F1": "RR",
+            "F1R2": "RR",
+            "R2R1": "RL",
+            "F1F2": "RL"
+        }
+    };
+
+    function getChrColor(chr) {
+        if (chrColorMap[chr]) {
+            return chrColorMap[chr]
+        } else if (chrColorMap["chr" + chr]) {
+            const color = chrColorMap["chr" + chr];
+            chrColorMap[chr] = color;
+            return color
+        } else {
+            const color = IGVColor.randomRGB(0, 255);
+            chrColorMap[chr] = color;
+            return color
+        }
+    }
+
+    const chrColorMap = {
+        "chrX": "rgb(204, 153, 0)",
+        "chrY": "rgb(153, 204, 0)",
+        "chrUn": "rgb(50, 50, 50)",
+        "chr1": "rgb(80, 80, 255)",
+        "chrI": "rgb(139, 155, 187)",
+        "chr2": "rgb(206, 61, 50)",
+        "chrII": "rgb(206, 61, 50)",
+        "chr2a": "rgb(216, 71, 60)",
+        "chr2b": "rgb(226, 81, 70)",
+        "chr3": "rgb(116, 155, 88)",
+        "chrIII": "rgb(116, 155, 88)",
+        "chr4": "rgb(240, 230, 133)",
+        "chrIV": "rgb(240, 230, 133)",
+        "chr5": "rgb(70, 105, 131)",
+        "chr6": "rgb(186, 99, 56)",
+        "chr7": "rgb(93, 177, 221)",
+        "chr8": "rgb(128, 34, 104)",
+        "chr9": "rgb(107, 215, 107)",
+        "chr10": "rgb(213, 149, 167)",
+        "chr11": "rgb(146, 72, 34)",
+        "chr12": "rgb(131, 123, 141)",
+        "chr13": "rgb(199, 81, 39)",
+        "chr14": "rgb(213, 143, 92)",
+        "chr15": "rgb(122, 101, 165)",
+        "chr16": "rgb(228, 175, 105)",
+        "chr17": "rgb(59, 27, 83)",
+        "chr18": "rgb(205, 222, 183)",
+        "chr19": "rgb(97, 42, 121)",
+        "chr20": "rgb(174, 31, 99)",
+        "chr21": "rgb(231, 199, 111)",
+        "chr22": "rgb(90, 101, 94)",
+        "chr23": "rgb(204, 153, 0)",
+        "chr24": "rgb(153, 204, 0)",
+        "chr25": "rgb(51, 204, 0)",
+        "chr26": "rgb(0, 204, 51)",
+        "chr27": "rgb(0, 204, 153)",
+        "chr28": "rgb(0, 153, 204)",
+        "chr29": "rgb(10, 71, 255)",
+        "chr30": "rgb(71, 117, 255)",
+        "chr31": "rgb(255, 194, 10)",
+        "chr32": "rgb(255, 209, 71)",
+        "chr33": "rgb(153, 0, 51)",
+        "chr34": "rgb(153, 26, 0)",
+        "chr35": "rgb(153, 102, 0)",
+        "chr36": "rgb(128, 153, 0)",
+        "chr37": "rgb(51, 153, 0)",
+        "chr38": "rgb(0, 153, 26)",
+        "chr39": "rgb(0, 153, 102)",
+        "chr40": "rgb(0, 128, 153)",
+        "chr41": "rgb(0, 51, 153)",
+        "chr42": "rgb(26, 0, 153)",
+        "chr43": "rgb(102, 0, 153)",
+        "chr44": "rgb(153, 0, 128)",
+        "chr45": "rgb(214, 0, 71)",
+        "chr46": "rgb(255, 20, 99)",
+        "chr47": "rgb(0, 214, 143)",
+        "chr48": "rgb(20, 255, 177)",
+    };
+
+    let timer;
+    let currentViewport = undefined;
+    const toolTipTimeout = 1e4;
+
+    class RulerViewport extends TrackViewport {
+
+        constructor(trackView, $viewportColumn, referenceFrame, width) {
+            super(trackView, $viewportColumn, referenceFrame, width);
+        }
+
+        get contentDiv() {
+            return this.$viewport.get(0)
+        }
+
+        initializationHelper() {
+
+            this.$multiLocusCloseButton = $$1('<div>', {class: 'igv-multi-locus-close-button'});
+            this.$viewport.append(this.$multiLocusCloseButton);
+            this.$multiLocusCloseButton.get(0).appendChild(icons$1.createIcon("times-circle"));
+
+            this.$multiLocusCloseButton.click(() => {
+                this.browser.removeMultiLocusPanel(this.referenceFrame);
+            });
+
+            this.$rulerLabel = $$1('<div>', {class: 'igv-multi-locus-ruler-label'});
+            this.$viewport.append(this.$rulerLabel);
+
+            let div;
+            div = document.createElement('div');
+            this.$rulerLabel.append($$1(div));
+
+            this.$rulerLabel.get(0).addEventListener('click', async event => {
+                event.stopPropagation();
+                await this.browser.gotoMultilocusPanel(this.referenceFrame);
+            });
+
+            this.$tooltip = $$1('<div>', {class: 'igv-ruler-tooltip'});
+            this.$tooltip.height(this.$viewport.height());
+
+            this.$viewport.append(this.$tooltip);
+
+            this.$tooltipContent = $$1('<div>');
+            this.$tooltip.append(this.$tooltipContent);
+
+            this.rulerSweeper = new RulerSweeper(this, this.$viewport.get(0).parentElement, this.browser, this.referenceFrame);
+
+            this.attachMouseHandlers(GenomeUtils.isWholeGenomeView(this.referenceFrame.chr));
+
+            this.$tooltip.hide();
+
+            this.dismissLocusLabel();
+        }
+
+        presentLocusLabel(viewportWidth) {
+
+            this.$multiLocusCloseButton.show();
+
+            this.$rulerLabel.show();
+            this.$rulerLabel.get(0).style.backgroundColor = getChrColor(this.referenceFrame.chr);
+
+            const textDiv = this.$rulerLabel.get(0).querySelector('div');
+
+            const { width } = this.$rulerLabel.get(0).getBoundingClientRect();
+
+            textDiv.innerHTML = `${ this.referenceFrame.getMultiLocusLabel(viewportWidth) }`;
+            const { width:textDivWidth } = textDiv.getBoundingClientRect();
+
+            if (textDivWidth/width > 0.5) {
+                textDiv.innerHTML = `${ this.referenceFrame.getMultiLocusLabelBPLengthOnly(viewportWidth) }`;
+            }
+
+            //console.log(`${ Date.now() } textDiv ${ StringUtils.numberFormatter(Math.floor(textDivWidth)) }`)
+
+        }
+
+        // Use in conjuction with .igv-multi-locus-ruler-label-square-dot css class (_dom-misc.scss)
+        dismissLocusLabel() {
+            this.$rulerLabel.hide();
+            this.$multiLocusCloseButton.hide();
+        }
+
+        attachMouseHandlers(isWholeGenomeView) {
+
+            this.namespace = `.ruler_track_viewport_${this.browser.referenceFrameList.indexOf(this.referenceFrame)}`;
+
+            this.$viewport.off(this.namespace);
+
+            if (true === isWholeGenomeView) {
+
+                const index = this.browser.referenceFrameList.indexOf(this.referenceFrame);
+
+                const click = `click${this.namespace}`;
+                this.$viewport.on(click, (e) => {
+
+                    const {x: pixel} = domUtils.translateMouseCoordinates(e, this.$viewport.get(0));
+                    const bp = Math.round(this.referenceFrame.start + this.referenceFrame.toBP(pixel));
+
+                    let searchString;
+
+                    const {chr} = this.browser.genome.getChromosomeCoordinate(bp);
+
+                    if (1 === this.browser.referenceFrameList.length) {
+                        searchString = chr;
+                    } else {
+
+                        let loci = this.browser.referenceFrameList.map(({locusSearchString}) => locusSearchString);
+
+                        loci[index] = chr;
+
+                        searchString = loci.join(' ');
+                    }
+
+                    this.browser.search(searchString);
+                });
+
+                this.$viewport.get(0).style.cursor = 'pointer';
+            } else {
+                this.$viewport.get(0).style.cursor = 'default';
+            }
+
+        }
+
+        mouseMove(event) {
+
+            if (true === this.browser.cursorGuideVisible) {
+
+                if (undefined === currentViewport) {
+                    currentViewport = this;
+                    this.$tooltip.show();
+                } else if (currentViewport.guid !== this.guid) {
+                    if (currentViewport.$tooltip) {
+                        currentViewport.$tooltip.hide();
+                    }
+                    this.$tooltip.show();
+                    currentViewport = this;
+                } else {
+                    this.$tooltip.show();
+                }
+
+                const isWholeGenome = (this.browser.isMultiLocusWholeGenomeView() || GenomeUtils.isWholeGenomeView(this.referenceFrame.chr));
+
+                if (isWholeGenome) {
+                    this.$tooltip.hide();
+                    return
+                }
+
+                const {x} = domUtils.translateMouseCoordinates(event, this.$viewport.get(0));
+                const {start, bpPerPixel} = this.referenceFrame;
+                const bp = Math.round(0.5 + start + Math.max(0, x) * bpPerPixel);
+
+                this.$tooltipContent.text(numberFormatter$1(bp));
+
+                const {width: ww} = this.$tooltipContent.get(0).getBoundingClientRect();
+                const {width: w} = this.$viewport.get(0).getBoundingClientRect();
+
+                this.$tooltip.css({left: `${IGVMath.clamp(x, 0, w - ww)}px`});
+
+                // hide tooltip when movement stops
+                clearTimeout(timer);
+                timer = setTimeout(() => {
+                    if (this.$tooltip) this.$tooltip.hide();
+                }, toolTipTimeout);
+
+            }
+
+        }
+
+        startSpinner() {
+        }
+
+        stopSpinner() {
+        }
+
+        dispose() {
+            this.rulerSweeper.dispose();
+            super.dispose();
+        }
+
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class IdeogramViewport extends TrackViewport {
+
+        constructor(trackView, viewportColumn, referenceFrame, width) {
+            super(trackView, viewportColumn, referenceFrame, width);
+        }
+
+        initializationHelper() {
+
+            this.canvas = document.createElement('canvas');
+            this.canvas.className = 'igv-ideogram-canvas';
+            //this.$content.append($(this.canvas))
+            this.$viewport.append($$1(this.canvas));
+            this.ideogram_ctx = this.canvas.getContext('2d');
+
+            this.addMouseHandlers();
+        }
+
+        addMouseHandlers() {
+            this.addViewportClickHandler(this.$viewport.get(0));
+        }
+
+        addViewportClickHandler(viewport) {
+
+            this.boundClickHandler = clickHandler.bind(this);
+            viewport.addEventListener('click', this.boundClickHandler);
+
+            function clickHandler(event) {
+
+                const {xNormalized, width} = domUtils.translateMouseCoordinates(event, this.ideogram_ctx.canvas);
+                const {bpLength} = this.browser.genome.getChromosome(this.referenceFrame.chr);
+                const locusLength = this.referenceFrame.bpPerPixel * width;
+                const chrCoveragePercentage = locusLength / bpLength;
+
+                let xPercentage = xNormalized;
+                if (xPercentage - (chrCoveragePercentage / 2.0) < 0) {
+                    xPercentage = chrCoveragePercentage / 2.0;
+                }
+
+                if (xPercentage + (chrCoveragePercentage / 2.0) > 1.0) {
+                    xPercentage = 1.0 - chrCoveragePercentage / 2.0;
+                }
+
+                const ss = Math.round((xPercentage - (chrCoveragePercentage / 2.0)) * bpLength);
+                const ee = Math.round((xPercentage + (chrCoveragePercentage / 2.0)) * bpLength);
+
+                this.referenceFrame.start = ss;
+                this.referenceFrame.end = ee;
+                this.referenceFrame.bpPerPixel = (ee - ss) / width;
+
+                this.browser.updateViews(this.referenceFrame, this.browser.trackViews, true);
+
+            }
+
+        }
+
+        setWidth(width) {
+            this.$viewport.width(width);
+        }
+
+        drawSVGWithContext(context, width, height, id, x, y, yClipOffset) {
+
+            context.saveWithTranslationAndClipRect(id, x, y, width, height, yClipOffset);
+
+            this.trackView.track.draw({
+                context,
+                referenceFrame: this.referenceFrame,
+                pixelWidth: width,
+                pixelHeight: height
+            });
+
+            context.restore();
+        }
+
+        repaint() {
+            this.draw({referenceFrame: this.referenceFrame});
+        }
+
+        draw({referenceFrame}) {
+
+            IGVGraphics.configureHighDPICanvas(this.ideogram_ctx, this.$viewport.width(), this.$viewport.height());
+
+            this.trackView.track.draw({
+                context: this.ideogram_ctx,
+                referenceFrame,
+                pixelWidth: this.$viewport.width(),
+                pixelHeight: this.$viewport.height()
+            });
+        }
+
+        startSpinner() {
+        }
+
+        stopSpinner() {
+        }
+
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+
+    function createViewport(trackView, column, referenceFrame, width) {
+
+        if ('ruler' === trackView.track.type) {
+            return new RulerViewport(trackView, column, referenceFrame, width)
+        } else if ('ideogram' === trackView.track.id) {
+            return new IdeogramViewport(trackView, column, referenceFrame, width)
+        } else {
+            const viewportObject = new TrackViewport(trackView, column, referenceFrame, width);
+
+            // if ('sequence' === trackView.track.type) {
+            //     viewportObject.$viewport.get(0).style.marginTop = '0px'
+            // }
+
+            return viewportObject
+        }
+    }
+
+    const maxFontSize = 10;
+
+    const fontConfigureTemplate =
+        {
+            // font: '2pt sans-serif',
+            textAlign: 'start',
+            textBaseline: 'bottom',
+            strokeStyle: 'black',
+            fillStyle: 'black'
+        };
+
+    class SampleNameViewport {
+
+        constructor(trackView, column, unused, width) {
+
+            this.guid = domUtils.guid();
+            this.trackView = trackView;
+
+            this.browser = trackView.browser;
+
+            this.viewport = domUtils.div({class: 'igv-viewport'});
+
+            column.appendChild(this.viewport);
+
+            if (trackView.track.height) {
+                this.viewport.style.height = `${trackView.track.height}px`;
+            }
+
+            this.canvas = document.createElement('canvas');
+            this.viewport.appendChild(this.canvas);
+            this.ctx = this.canvas.getContext("2d");
+
+            this.trackScrollDelta = 0;
+
+            this.contentTop = 0;
+
+            this.setWidth(width);
+
+            if (false === this.browser.showSampleNames) {
+                this.hide();
+            }
+
+            this.addMouseHandlers();
+        }
+
+        checkCanvas() {
+
+            const dpi = window.devicePixelRatio;
+            const requiredHeight = this.viewport.clientHeight;
+            const requiredWidth = this.browser.sampleNameViewportWidth;
+
+            if (this.canvas.width !== requiredWidth * dpi || this.canvas.height !== requiredHeight * dpi) {
+                const canvas = this.canvas;
+                canvas.width = requiredWidth * dpi;
+                canvas.height = requiredHeight * dpi;
+                canvas.style.width = `${requiredWidth}px`;
+                canvas.style.height = `${requiredHeight}px`;
+                this.ctx = this.canvas.getContext("2d");
+                this.ctx.scale(dpi, dpi);
+            }
+
+        }
+
+        setTop(contentTop) {
+
+            if (typeof this.trackView.track.getSamples === 'function') {
+                this.contentTop = contentTop;
+                const samples = this.trackView.track.getSamples();
+                this.repaint(samples);
+            }
+
+        }
+
+        setWidth(width) {
+            this.viewport.innerWidth = width;
+            this.checkCanvas();
+        }
+
+        show() {
+            this.viewport.style.display = 'block';
+        }
+
+        hide() {
+            this.viewport.style.display = 'none';
+        }
+
+        async repaint(samples) {
+
+            this.checkCanvas();
+            this.draw({context: this.ctx, samples});
+        }
+
+        draw({context, samples}) {
+
+            if (!samples || samples.names.length === 0/* || samples.height < 1*/) {
+                return
+            }
+
+            configureFont(context, fontConfigureTemplate, samples.height);
+            const sampleNameXShim = 4;
+
+            context.clearRect(0, 0, context.canvas.width, context.canvas.height);
+
+            context.fillStyle = appleCrayonRGB('lead');
+
+            const viewportHeight = this.viewport.getBoundingClientRect().height;
+            let y = (samples.yOffset || 0) + this.contentTop;    // contentTop will always be a negative number (top relative to viewport)
+
+            for (let name of samples.names) {
+                if (y > viewportHeight) {
+                    break
+                }
+                if (y + samples.height > 0) {
+                    const text = name;
+                    const yFont = getYFont(context, text, y, samples.height);
+                    context.fillText(text, sampleNameXShim, yFont);
+
+                }
+                y += samples.height;
+            }
+        }
+
+        renderSVGContext(context, {deltaX, deltaY}) {
+
+            if (typeof this.trackView.track.getSamples === 'function') {
+
+                const samples = this.trackView.track.getSamples();
+
+                const yScrollDelta = 0;   // This is not relevant, scrolling is handled in "draw"
+
+                const {width, height} = this.viewport.getBoundingClientRect();
+
+                const str = (this.trackView.track.name || this.trackView.track.id).replace(/\W/g, '');
+                const id = `${str}_sample_names_guid_${domUtils.guid()}`;
+
+                context.saveWithTranslationAndClipRect(id, deltaX, deltaY + yScrollDelta, width, height, -yScrollDelta);
+
+                this.draw({context, samples});
+
+                context.restore();
+            }
+        }
+
+        addMouseHandlers() {
+            this.addViewportContextMenuHandler(this.viewport);
+        }
+
+        removeMouseHandlers() {
+            this.removeViewportContextMenuHandler(this.viewport);
+        }
+
+        addViewportContextMenuHandler(viewport) {
+            this.boundContextMenuHandler = contextMenuHandler.bind(this);
+            viewport.addEventListener('contextmenu', this.boundContextMenuHandler);
+
+            function contextMenuHandler(event) {
+
+                event.preventDefault();
+                event.stopPropagation();
+
+                const config =
+                    {
+                        label: 'Name Panel Width',
+                        value: this.browser.sampleNameViewportWidth,
+                        callback: newWidth => {
+                            this.browser.sampleNameViewportWidth = parseInt(newWidth);
+                            for (let {sampleNameViewport} of this.browser.trackViews) {
+                                sampleNameViewport.setWidth(this.browser.sampleNameViewportWidth);
+                            }
+                            this.browser.layoutChange();
+                        }
+                    };
+
+                this.browser.inputDialog.present(config, event);
+            }
+
+        }
+
+        removeViewportContextMenuHandler(viewport) {
+            viewport.removeEventListener('contextmenu', this.boundContextMenuHandler);
+        }
+
+        dispose() {
+            this.removeMouseHandlers();
+            this.viewport.remove();
+        }
+    }
+
+    function getYFont(context, text, y, height) {
+        return y + height - getSampleNameYShim(context, text, height)
+    }
+
+    function getSampleNameYShim(context, text, h) {
+        const {actualBoundingBoxAscent, actualBoundingBoxDescent} = context.measureText(text);
+        return (h - (actualBoundingBoxAscent + actualBoundingBoxDescent)) / 2
+    }
+
+    function configureFont(ctx, {textAlign, textBaseline, strokeStyle, fillStyle}, sampleHeight) {
+        const pixels = Math.min(sampleHeight, maxFontSize);
+        ctx.font = `${pixels}px sans-serif`;
+        ctx.textAlign = textAlign;
+        ctx.textBaseline = textBaseline;
+        ctx.fillStyle = fillStyle;
+    }
+
+    const MenuPopup = function (parent) {
+
+        this.popover = domUtils.div({class: 'igv-menu-popup'});
+        parent.appendChild(this.popover);
+
+        const header = domUtils.div({class: 'igv-menu-popup-header'});
+        this.popover.appendChild(header);
+
+        uiUtils.attachDialogCloseHandlerWithParent(header, () => this.hide());
+
+        this.popoverContent = domUtils.div();
+        this.popover.appendChild(this.popoverContent);
+
+        makeDraggable(this.popover, header);
+
+        header.addEventListener('click', e => {
+            e.stopPropagation();
+            e.preventDefault();
+            // absorb click to prevent it leaking through to parent DOM element
+        });
+
+        this.hide();
+
+    };
+
+    MenuPopup.prototype.hide = function () {
+        this.popover.style.display = 'none';
+    };
+
+    MenuPopup.prototype.presentMenuList = function (menuList) {
+
+        hideAllMenuPopups();
+
+        if (menuList.length > 0) {
+
+            this.popoverContent.innerHTML = '';
+
+            menuList = MenuUtils.trackMenuItemListHelper(menuList, this);
+
+            for (let item of menuList) {
+
+                if (item.init) {
+                    item.init();
+                }
+
+                let $e = item.object;
+                if (0 === menuList.indexOf(item)) {
+                    $e.removeClass('igv-track-menu-border-top');
+                }
+
+                if ($e.hasClass('igv-track-menu-border-top') || $e.hasClass('igv-menu-popup-check-container')) ; else if ($e.is('div')) {
+                    $e.addClass('igv-menu-popup-shim');
+                }
+
+                this.popoverContent.appendChild($e.get(0));
+
+            }
+
+            // NOTE: style.display most NOT be 'none' when calculating width. a display = 'none' will always
+            //       yield a width of zero (0).
+            this.popover.style.display = 'flex';
+
+            const {width} = this.popover.getBoundingClientRect();
+
+            this.popover.style.left = `${-width}px`;
+            this.popover.style.top = `${0}px`;
+
+        }
+    };
+
+    MenuPopup.prototype.presentTrackContextMenu = function (e, menuItems) {
+
+        this.popoverContent.innerHTML = '';
+
+        const menuElements = createMenuElements(menuItems, this.popover);
+        for (let {el} of menuElements) {
+            this.popoverContent.appendChild(el);
+        }
+
+        present(e, this.popover);
+
+    };
+
+    MenuPopup.prototype.dispose = function () {
+
+        this.popoverContent.innerHTML = '';
+        this.popover.innerHTML = '';
+
+        Object.keys(this).forEach(function (key) {
+            this[key] = undefined;
+        });
+    };
+
+    function createMenuElements(itemList, popover) {
+
+        return itemList.map(item => {
+
+            let el;
+
+            if (typeof item === 'string' && '<hr/>' === item) {
+                el = document.createElement('hr');
+            } else if (typeof item === 'string') {
+                el = domUtils.div({class: 'context-menu'});
+                el.innerHTML = item;
+            } else if (typeof item === 'Node') {
+                el = item;
+            } else {
+                if (typeof item.init === 'function') {
+                    item.init();
+                }
+
+                if ("checkbox" === item.type) {
+                    el = createCheckbox("Show all bases", item.value);
+                } else if ("color" === item.type) {
+
+                    const colorPicker = new GenericColorPicker({parent: popover.parentElement, width: 364});
+                    colorPicker.configure(undefined, {color: color => item.click(color)});
+
+                    el = domUtils.div({class: 'context-menu'});
+                    if (typeof item.label === 'string') {
+                        el.innerHTML = item.label;
+                    }
+                    const clickHandler = e => {
+                        colorPicker.show();
+                        domUtils.hide(popover);
+                        e.preventDefault();
+                        e.stopPropagation();
+                    };
+                    el.addEventListener('click', clickHandler);
+                    el.addEventListener('touchend', clickHandler);
+                    el.addEventListener('mouseup', function (e) {
+                        e.preventDefault();
+                        e.stopPropagation();
+                    });
+                } else {
+                    el = domUtils.div({class: 'context-menu'});
+                    if (typeof item.label === 'string') {
+                        el.innerHTML = item.label;
+                    }
+                }
+
+                if (item.click && "color" !== item.type) {
+                    el.addEventListener('click', handleClick);
+                    el.addEventListener('touchend', handleClick);
+                    el.addEventListener('mouseup', function (e) {
+                        e.preventDefault();
+                        e.stopPropagation();
+                    });
+
+                    // eslint-disable-next-line no-inner-declarations
+                    function handleClick(e) {
+                        item.click();
+                        domUtils.hide(popover);
+                        e.preventDefault();
+                        e.stopPropagation();
+                    }
+                }
+            }
+
+            return {el, init: item.init}
+        })
+
+    }
+
+    function present(e, popover) {
+
+        // NOTE: style.display most NOT be 'none' when calculating width. a display = 'none' will always
+        //       yield a width of zero (0).
+        popover.style.display = 'flex';
+
+        const {x, y} = domUtils.translateMouseCoordinates(e, popover.parentNode);
+        const {width} = popover.getBoundingClientRect();
+        const xmax = x + width;
+
+        const {width: parentWidth} = popover.parentNode.getBoundingClientRect();
+
+        popover.style.left = `${xmax > parentWidth ? (x - (xmax - parentWidth)) : x}px`;
+        popover.style.top = `${y}px`;
+
+    }
+
+    const hideAllMenuPopups = () => {
+
+        const menus = document.querySelectorAll('.igv-menu-popup');
+        for (let i = 0; i < menus.length; i++) {
+            menus[i].style.display = 'none';
+        }
+
+    };
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const igv_axis_column_width = 50;
+    const scrollbarExclusionTypes = new Set(['ruler', 'ideogram']);
+    const colorPickerExclusionTypes = new Set(['ruler', 'sequence', 'ideogram']);
+
+    class TrackView {
+
+        constructor(browser, columnContainer, track) {
+            this.browser = browser;
+            this.track = track;
+            track.trackView = this;
+            this.addDOMToColumnContainer(browser, columnContainer, browser.referenceFrameList);
+        }
+
+        /**
+         * Start a spinner for the track on any of its viewports.  In practice this is called during initialization
+         * when there is only one.
+         */
+        startSpinner() {
+            if (this.viewports && this.viewports.length > 0) {
+                this.viewports[0].startSpinner();
+            }
+        }
+
+        stopSpinner() {
+            if (this.viewports && this.viewports.length > 0) {
+                this.viewports[0].stopSpinner();
+            }
+        }
+
+        addDOMToColumnContainer(browser, columnContainer, referenceFrameList) {
+
+            // Axis
+            this.axis = this.createAxis(browser, this.track);
+
+            // Create a viewport for each reference frame
+            this.viewports = [];
+            const viewportWidth = browser.calculateViewportWidth(referenceFrameList.length);
+            const viewportColumns = columnContainer.querySelectorAll('.igv-column');
+            for (let i = 0; i < viewportColumns.length; i++) {
+                const viewport = createViewport(this, viewportColumns[i], referenceFrameList[i], viewportWidth);
+                this.viewports.push(viewport);
+            }
+
+            // SampleName Viewport
+            this.sampleNameViewport = new SampleNameViewport(this, browser.columnContainer.querySelector('.igv-sample-name-column'), undefined, browser.sampleNameViewportWidth);
+
+            // Track Scrollbar
+            this.createTrackScrollbar(browser);
+
+            // Track Drag
+            this.createTrackDragHandle(browser);
+
+            // Track Gear
+            this.createTrackGearPopup(browser);
+
+        }
+
+        createAxis(browser, track) {
+
+            const axis = domUtils.div();
+            browser.columnContainer.querySelector('.igv-axis-column').appendChild(axis);
+
+            axis.style.height = `${track.height}px`;
+
+            if (typeof track.paintAxis === 'function') {
+                if (track.dataRange) {
+                    axis.addEventListener('click', () => {
+                        browser.dataRangeDialog.configure(this);
+                        browser.dataRangeDialog.present($$1(browser.columnContainer));
+                    });
+                }
+
+
+                const {width, height} = axis.getBoundingClientRect();
+                this.axisCanvas = document.createElement('canvas');
+                this.axisCanvas.style.width = `${width}px`;
+                this.axisCanvas.style.height = `${height}px`;
+                axis.appendChild(this.axisCanvas);
+            }
+
+            return axis
+
+        }
+
+        resizeAxisCanvas(width, height) {
+
+            this.axis.style.width = `${width}px`;
+            this.axis.style.height = `${height}px`;
+
+            if (typeof this.track.paintAxis === 'function') {
+                // Size the canvas in CSS (logical) pixels.  The buffer size will be set when painted.
+                this.axisCanvas.style.width = `${width}px`;
+                this.axisCanvas.style.height = `${height}px`;
+
+            }
+        }
+
+        removeDOMFromColumnContainer() {
+
+            // Axis
+            if (this.boundAxisClickHander) {
+                this.removeAxisEventListener(this.axis);
+            }
+            this.axis.remove();
+
+            // Track Viewports
+            for (let viewport of this.viewports) {
+                viewport.$viewport.remove();
+            }
+
+            // SampleName Viewport
+            this.sampleNameViewport.dispose();
+
+            // empty trackScrollbar Column
+            this.removeTrackScrollMouseHandlers();
+            this.outerScroll.remove();
+
+            // empty trackDrag Column
+            this.removeTrackDragMouseHandlers();
+            this.dragHandle.remove();
+
+            // empty trackGear Column
+            this.removeTrackGearMouseHandlers();
+            this.gearContainer.remove();
+
+        }
+
+        renderSVGContext(context, {deltaX, deltaY}) {
+
+            renderSVGAxis(context, this.track, this.axisCanvas, deltaX, deltaY);
+
+            const {width: axisWidth} = this.axis.getBoundingClientRect();
+
+            const {y} = this.viewports[0].$viewport.get(0).getBoundingClientRect();
+
+            let delta =
+                {
+                    deltaX: axisWidth + deltaX,
+                    deltaY: y + deltaY
+                };
+
+            for (let viewport of this.viewports) {
+                viewport.renderSVGContext(context, delta);
+                const {width} = viewport.$viewport.get(0).getBoundingClientRect();
+                delta.deltaX += width;
+            }
+            
+            if (true === this.browser.showSampleNames) {
+                this.sampleNameViewport.renderSVGContext(context, delta);
+            }
+        }
+
+        dataRange() {
+            return this.track.dataRange ? this.track.dataRange : undefined
+        }
+
+        setDataRange(min, max) {
+            if (min !== undefined) {
+                this.track.dataRange.min = min;
+            }
+            if (max !== undefined) {
+                this.track.dataRange.max = max;
+            }
+            this.track.autoscale = false;
+            this.repaintViews();
+        }
+
+        presentColorPicker(key) {
+
+            if (false === colorPickerExclusionTypes.has(this.track.type)) {
+
+                const trackColors = [];
+                const color = this.track.color || this.track.defaultColor;
+                if (isString$2(color)) {
+                    trackColors.push(color);
+                }
+                if (this.track.altColor && isString$2(this.track.altColor)) {
+                    trackColors.push(this.track.altColor);
+                }
+                const defaultColors = trackColors.map(c => c.startsWith("#") ? c : c.startsWith("rgb(") ? IGVColor.rgbToHex(c) : IGVColor.colorNameToHex(c));
+                const colorHandlers =
+                    {
+                        color: color => {
+                            this.track.color = color;
+                            this.repaintViews();
+                        },
+                        altColor: color => {
+                            this.track.altColor = color;
+                            this.repaintViews();
+                        }
+
+                    };
+                this.browser.genericColorPicker.configure(defaultColors, colorHandlers);
+                this.browser.genericColorPicker.setActiveColorHandler(key);
+                this.browser.genericColorPicker.show();
+            }
+
+        }
+
+        setTrackHeight(newHeight, force) {
+
+            if (!force) {
+                if (this.track.minHeight) {
+                    newHeight = Math.max(this.track.minHeight, newHeight);
+                }
+                if (this.track.maxHeight) {
+                    newHeight = Math.min(this.track.maxHeight, newHeight);
+                }
+            }
+
+            this.track.height = newHeight;
+
+            this.resizeAxisCanvas(this.axis.clientWidth, this.track.height);
+
+            if (typeof this.track.paintAxis === 'function') {
+                this.paintAxis();
+            }
+
+            for (let {$viewport} of this.viewports) {
+                $viewport.height(newHeight);
+            }
+
+            this.sampleNameViewport.viewport.style.height = `${newHeight}px`;
+
+            // If the track does not manage its own content height set it equal to the viewport height here
+            if (typeof this.track.computePixelHeight !== "function") {
+                for (let vp of this.viewports) {
+                    vp.setContentHeight(newHeight);
+                }
+            }
+
+            this.repaintViews();
+
+            if (false === scrollbarExclusionTypes.has(this.track.type)) {
+                this.updateScrollbar();
+            }
+
+            this.dragHandle.style.height = `${newHeight}px`;
+            this.gearContainer.style.height = `${newHeight}px`;
+
+        }
+
+        updateScrollbar() {
+
+            const viewportHeight = this.viewports[0].$viewport.height();
+            this.outerScroll.style.height = `${viewportHeight}px`;
+
+            const viewportContentHeight = this.maxViewportContentHeight();
+            const innerScrollHeight = Math.round((viewportHeight / viewportContentHeight) * viewportHeight);
+
+            if (viewportContentHeight > viewportHeight) {
+                this.innerScroll.style.display = 'block';
+                this.innerScroll.style.height = `${innerScrollHeight}px`;
+            } else {
+                this.innerScroll.style.display = 'none';
+            }
+        }
+
+        moveScroller(delta) {
+
+            const y = $$1(this.innerScroll).position().top + delta;
+            const top = Math.min(Math.max(0, y), this.outerScroll.clientHeight - this.innerScroll.clientHeight);
+            $$1(this.innerScroll).css('top', `${top}px`);
+
+            const contentHeight = this.maxViewportContentHeight();
+            const contentTop = -Math.round(top * (contentHeight / this.viewports[0].$viewport.height()));
+
+            for (let viewport of this.viewports) {
+                viewport.setTop(contentTop);
+            }
+
+            this.sampleNameViewport.trackScrollDelta = delta;
+            this.sampleNameViewport.setTop(contentTop);
+
+        }
+
+        isLoading() {
+            for (let viewport of this.viewports) {
+                if (viewport.isLoading()) return true
+            }
+        }
+
+        /**
+         * Repaint all viewports without loading any new data.   Use this for events that change visual aspect of data,
+         * e.g. color, sort order, etc, but do not change the genomic state.
+         */
+        repaintViews() {
+
+            for (let viewport of this.viewports) {
+                if (viewport.isVisible()) {
+                    viewport.repaint();
+                }
+            }
+
+            if (typeof this.track.paintAxis === 'function') {
+                this.paintAxis();
+            }
+
+            // Repaint sample names last
+            this.repaintSamples();
+        }
+
+        repaintSamples() {
+
+            if (typeof this.track.getSamples === 'function') {
+                const samples = this.track.getSamples();
+                this.sampleNameViewport.repaint(samples);
+            }
+        }
+
+        // track labels
+        setTrackLabelName(name) {
+            this.viewports.forEach(viewport => viewport.setTrackLabel(name));
+        }
+
+        /**
+         * Called in response to a window resize event, change in # of multilocus panels, or other event that changes
+         * the width of the track view.
+         *
+         * @param viewportWidth  The width of each viewport in this track view.
+         */
+        resize(viewportWidth) {
+            for (let viewport of this.viewports) {
+                viewport.setWidth(viewportWidth);
+            }
+        }
+
+        /**
+         * Update viewports to reflect current genomic state, possibly loading additional data.
+         *
+         * @param force - if true, force a repaint even if no new data is loaded
+         * @returns {Promise<void>}
+         */
+        async updateViews() {
+
+            if (!(this.browser && this.browser.referenceFrameList)) return
+
+            const visibleViewports = this.viewports.filter(viewport => viewport.isVisible());
+
+            // Shift viewports left/right to current genomic state (pans canvas)
+            visibleViewports.forEach(viewport => viewport.shift());
+
+            // If dragging (panning) return
+            if (this.browser.dragObject) {
+                return
+            }
+
+            // Filter zoomed out views.  This has the side effect or turning off or no the zoomed out notice
+            const viewportsToRepaint = visibleViewports.filter(vp => vp.needsRepaint()).filter(viewport => viewport.checkZoomIn());
+
+            // Get viewports that require a data load
+            const viewportsToReload = viewportsToRepaint.filter(viewport => viewport.needsReload());
+
+            // Trigger viewport to load features needed to cover current genomic range
+            // NOTE: these must be loaded synchronously, do not user Promise.all,  not all file readers are thread safe
+            for (let viewport of viewportsToReload) {
+                await viewport.loadFeatures();
+            }
+
+            if (this.disposed) return   // Track was removed during load
+
+            // Special case for variant tracks in multilocus view.  The # of rows to allocate to the variant (site)
+            // section depends on data from all the views.  We only need to adjust this however if any data was loaded
+            // (i.e. reloadableViewports.length > 0)
+            if (this.track && typeof this.track.variantRowCount === 'function' && viewportsToReload.length > 0) {
+                let maxRow = 0;
+                for (let viewport of this.viewports) {
+                    if (viewport.featureCache && viewport.featureCache.features) {
+                        maxRow = Math.max(maxRow, viewport.featureCache.features.reduce((a, f) => Math.max(a, f.row || 0), 0));
+                    }
+                }
+                const current = this.track.nVariantRows;
+                if (current !== maxRow + 1) {
+                    this.track.variantRowCount(maxRow + 1);
+                    for (let viewport of this.viewports) {
+                        viewport.checkContentHeight();
+                    }
+                }
+            }
+
+            if (this.track.autoscale) {
+                let allFeatures = [];
+                for (let visibleViewport of visibleViewports) {
+                    const referenceFrame = visibleViewport.referenceFrame;
+                    const start = referenceFrame.start;
+                    const end = start + referenceFrame.toBP(visibleViewport.getWidth());
+                    if (visibleViewport.featureCache && visibleViewport.featureCache.features) {
+                        // If the "features" object has a getMax function use it.  Currently only alignmentContainer implements this, for coverage.
+                        if (typeof visibleViewport.featureCache.features.getMax === 'function') {
+                            const max = visibleViewport.featureCache.features.getMax(start, end);
+                            allFeatures.push({value: max});
+                        } else {
+                            const viewFeatures = FeatureUtils.findOverlapping(visibleViewport.featureCache.features, start, end);
+                            for (let f of viewFeatures) {
+                                allFeatures.push(f);
+                            }
+                        }
+                    }
+                }
+                if (typeof this.track.doAutoscale === 'function') {
+                    this.track.dataRange = this.track.doAutoscale(allFeatures);
+                } else {
+                    this.track.dataRange = doAutoscale(allFeatures);
+                }
+            }
+
+            const refreshView = (this.track.autoscale || this.track.autoscaleGroup || this.track.type === 'ruler');
+            for (let vp of visibleViewports) {
+                if (viewportsToRepaint.includes(vp)) {
+                    vp.repaint();
+                } else if (refreshView) {
+                    vp.refresh();
+                }
+            }
+
+            this.adjustTrackHeight();
+
+            // Repaint sample names last
+            this.repaintSamples();
+
+            this.updateRulerViewportLabels();
+        }
+
+        clearCachedFeatures() {
+            for (let viewport of this.viewports) {
+                viewport.clearCache();
+            }
+        }
+
+        updateRulerViewportLabels() {
+
+            const viewportWidth = this.browser.calculateViewportWidth(this.viewports.length);
+
+            for (let viewport of this.viewports) {
+                if ('ruler' === this.track.type) {
+                    if (this.viewports.length > 1) {
+                        viewport.presentLocusLabel(viewportWidth);
+                    } else {
+                        viewport.dismissLocusLabel();
+                    }
+                }
+            }
+
+        }
+
+        /**
+         * Return a promise to get all in-view features across all viewports.  Used for group autoscaling.
+         */
+        async getInViewFeatures() {
+
+            if (!(this.browser && this.browser.referenceFrameList)) {
+                return []
+            }
+
+            let allFeatures = [];
+            const visibleViewports = this.viewports.filter(viewport => viewport.isVisible());
+            for (let vp of visibleViewports) {
+
+                const referenceFrame = vp.referenceFrame;
+                const {chr, start, bpPerPixel} = vp.referenceFrame;
+                const end = start + referenceFrame.toBP(vp.getWidth());
+                const needsReload = !vp.featureCache || !vp.featureCache.containsRange(chr, start, end, bpPerPixel);
+
+                if (needsReload) {
+                    await vp.loadFeatures();
+                }
+                if (vp.featureCache && vp.featureCache.features) {
+
+                    if (typeof vp.featureCache.features.getMax === 'function') {
+                        const max = vp.featureCache.features.getMax(start, end);
+                        allFeatures.push({value: max});
+                    } else {
+                        const vpFeatures = typeof vp.featureCache.queryFeatures === 'function' ?
+                            vp.featureCache.queryFeatures(chr, start, end) :
+                            FeatureUtils.findOverlapping(vp.featureCache.features, start, end);
+                        allFeatures = allFeatures.concat(vpFeatures);
+                    }
+                }
+            }
+            return allFeatures
+        }
+
+        checkContentHeight() {
+
+            for (let viewport of this.viewports) {
+                viewport.checkContentHeight();
+            }
+            this.adjustTrackHeight();
+
+        }
+
+        adjustTrackHeight() {
+
+            var contentHeight = this.maxViewportContentHeight();
+            if (this.track.autoHeight) {
+                this.setTrackHeight(contentHeight, false);
+            } else if (this.track.paintAxis) {   // Avoid duplication, paintAxis is already called in setTrackHeight
+                this.paintAxis();
+            }
+
+            if (false === scrollbarExclusionTypes.has(this.track.type)) {
+
+                // Adjust scrollbar, if needed, to insure content is in view
+                const currentTop = this.viewports[0].getContentTop();
+                const viewportHeight = this.viewports[0].$viewport.height();
+                const minTop = Math.min(0, viewportHeight - contentHeight);
+                if(currentTop < minTop) {
+                     for (let viewport of this.viewports) {
+                        viewport.setTop(minTop);
+                    }
+                }
+                this.updateScrollbar();
+            }
+        }
+
+        createTrackScrollbar(browser) {
+
+            const outerScroll = domUtils.div();
+            browser.columnContainer.querySelector('.igv-scrollbar-column').appendChild(outerScroll);
+            outerScroll.style.height = `${this.track.height}px`;
+            this.outerScroll = outerScroll;
+
+            if (false === scrollbarExclusionTypes.has(this.track.type)) {
+                const innerScroll = domUtils.div();
+                outerScroll.appendChild(innerScroll);
+                this.innerScroll = innerScroll;
+
+                this.addTrackScrollMouseHandlers(browser);
+            }
+
+        }
+
+        createTrackDragHandle(browser) {
+
+            const className = 'ideogram' === this.track.type || 'ruler' === this.track.type ? 'igv-track-drag-shim' : 'igv-track-drag-handle';
+            this.dragHandle = domUtils.div({class: className});
+            browser.columnContainer.querySelector('.igv-track-drag-column').appendChild(this.dragHandle);
+            this.dragHandle.style.height = `${this.track.height}px`;
+
+            this.addTrackDragMouseHandlers(browser);
+
+        }
+
+        createTrackGearPopup(browser) {
+
+            this.gearContainer = domUtils.div();
+            browser.columnContainer.querySelector('.igv-gear-menu-column').appendChild(this.gearContainer);
+            this.gearContainer.style.height = `${this.track.height}px`;
+
+            if (true === this.track.ignoreTrackMenu) ; else {
+
+                this.gear = domUtils.div();
+                this.gearContainer.appendChild(this.gear);
+                this.gear.appendChild(icons$1.createIcon('cog'));
+
+                this.trackGearPopup = new MenuPopup(this.gear);
+
+                this.addTrackGearMouseHandlers();
+            }
+
+        }
+
+        addAxisEventListener(axis) {
+
+            this.boundAxisClickHander = axisClickHandler.bind(this);
+            axis.addEventListener('click', this.boundAxisClickHander);
+
+            function axisClickHandler(event) {
+                this.browser.dataRangeDialog.configure(this);
+                this.browser.dataRangeDialog.present($$1(this.browser.columnContainer));
+            }
+
+        }
+
+        removeAxisEventListener(axis) {
+            axis.removeEventListener('click', this.boundAxisClickHander);
+        }
+
+        addTrackScrollMouseHandlers(browser) {
+
+            // Mouse Down
+            this.boundTrackScrollMouseDownHandler = trackScrollMouseDownHandler.bind(this);
+            this.innerScroll.addEventListener('mousedown', this.boundTrackScrollMouseDownHandler);
+
+            function trackScrollMouseDownHandler(event) {
+
+                event.stopPropagation();
+
+                const {y} = domUtils.pageCoordinates(event);
+
+                $$1(this.innerScroll).data('yDown', y.toString());
+
+                this.boundColumnContainerMouseMoveHandler = columnContainerMouseMoveHandler.bind(this);
+                browser.columnContainer.addEventListener('mousemove', this.boundColumnContainerMouseMoveHandler);
+
+                function columnContainerMouseMoveHandler(event) {
+
+                    event.stopPropagation();
+
+                    const {y} = domUtils.pageCoordinates(event);
+
+                    this.moveScroller(y - parseInt($$1(this.innerScroll).data('yDown')));
+
+                    $$1(this.innerScroll).data('yDown', y.toString());
+
+                }
+            }
+
+            this.boundColumnContainerMouseUpHandler = columnContainerMouseUpHandler.bind(this);
+            browser.columnContainer.addEventListener('mouseup', this.boundColumnContainerMouseUpHandler);
+
+            function columnContainerMouseUpHandler(event) {
+                browser.columnContainer.removeEventListener('mousemove', this.boundColumnContainerMouseMoveHandler);
+            }
+
+        }
+
+        removeTrackScrollMouseHandlers() {
+            if (false === scrollbarExclusionTypes.has(this.track.type)) {
+                this.innerScroll.removeEventListener('mousedown', this.boundTrackScrollMouseDownHandler);
+                this.browser.columnContainer.removeEventListener('mouseup', this.boundColumnContainerMouseUpHandler);
+                this.browser.columnContainer.removeEventListener('mousemove', this.boundColumnContainerMouseMoveHandler);
+            }
+        }
+
+        addTrackDragMouseHandlers(browser) {
+
+            if ('ideogram' === this.track.id || 'ruler' === this.track.id) ; else {
+
+                let currentDragHandle = undefined;
+
+                // Mouse Down
+                this.boundTrackDragMouseDownHandler = trackDragMouseDownHandler.bind(this);
+                this.dragHandle.addEventListener('mousedown', this.boundTrackDragMouseDownHandler);
+
+                function trackDragMouseDownHandler(event) {
+
+                    event.preventDefault();
+
+                    currentDragHandle = event.target;
+                    currentDragHandle.classList.add('igv-track-drag-handle-hover');
+
+                    browser.startTrackDrag(this);
+
+                }
+
+                // Mouse Up
+                this.boundDocumentTrackDragMouseUpHandler = documentTrackDragMouseUpHandler.bind(this);
+                document.addEventListener('mouseup', this.boundDocumentTrackDragMouseUpHandler);
+
+                function documentTrackDragMouseUpHandler(event) {
+
+                    browser.endTrackDrag();
+
+                    if (currentDragHandle && event.target !== currentDragHandle) {
+                        currentDragHandle.classList.remove('igv-track-drag-handle-hover');
+                    }
+
+                    currentDragHandle = undefined;
+                }
+
+                // Mouse Enter
+                this.boundTrackDragMouseEnterHandler = trackDragMouseEnterHandler.bind(this);
+                this.dragHandle.addEventListener('mouseenter', this.boundTrackDragMouseEnterHandler);
+
+                function trackDragMouseEnterHandler(event) {
+                    event.preventDefault();
+
+                    if (undefined === currentDragHandle) {
+                        event.target.classList.add('igv-track-drag-handle-hover');
+                    }
+
+                    browser.updateTrackDrag(this);
+
+                }
+
+                // Mouse Out
+                this.dragHandle.addEventListener('mouseout', e => {
+                    e.preventDefault();
+
+                    if (undefined === currentDragHandle) {
+                        e.target.classList.remove('igv-track-drag-handle-hover');
+                    }
+                });
+
+                this.boundTrackDragMouseOutHandler = trackDragMouseOutHandler.bind(this);
+                this.dragHandle.addEventListener('mouseout', this.boundTrackDragMouseOutHandler);
+
+                function trackDragMouseOutHandler(event) {
+                    event.preventDefault();
+
+                    if (undefined === currentDragHandle) {
+                        event.target.classList.remove('igv-track-drag-handle-hover');
+                    }
+                }
+
+            }
+
+        }
+
+        removeTrackDragMouseHandlers() {
+
+            if ('ideogram' === this.track.id || 'ruler' === this.track.id) ; else {
+                this.dragHandle.removeEventListener('mousedown', this.boundTrackDragMouseDownHandler);
+                document.removeEventListener('mouseup', this.boundDocumentTrackDragMouseUpHandler);
+                this.dragHandle.removeEventListener('mouseup', this.boundTrackDragMouseEnterHandler);
+                this.dragHandle.removeEventListener('mouseout', this.boundTrackDragMouseOutHandler);
+            }
+
+        }
+
+        addTrackGearMouseHandlers() {
+            if (true === this.track.ignoreTrackMenu) ; else {
+
+                this.boundTrackGearClickHandler = trackGearClickHandler.bind(this);
+                this.gear.addEventListener('click', this.boundTrackGearClickHandler);
+
+                function trackGearClickHandler(event) {
+                    event.preventDefault();
+                    event.stopPropagation();
+                    this.trackGearPopup.presentMenuList(MenuUtils.trackMenuItemList(this));
+                }
+
+            }
+
+        }
+
+        removeTrackGearMouseHandlers() {
+            if (true === this.track.ignoreTrackMenu) ; else {
+                this.gear.removeEventListener('click', this.boundTrackGearClickHandler);
+            }
+
+        }
+
+        /**
+         * Do any cleanup here
+         */
+        dispose() {
+
+            this.removeAxisEventListener(this.axis);
+            this.axis.remove();
+
+            for (let viewport of this.viewports) {
+                viewport.dispose();
+            }
+
+            this.sampleNameViewport.dispose();
+
+            this.removeTrackScrollMouseHandlers();
+            this.outerScroll.remove();
+
+            this.removeTrackDragMouseHandlers();
+            this.dragHandle.remove();
+
+            this.removeTrackGearMouseHandlers();
+            this.gearContainer.remove();
+
+            if (typeof this.track.dispose === "function") {
+                this.track.dispose();
+            }
+
+            for (let key of Object.keys(this)) {
+                this[key] = undefined;
+            }
+
+            if (this.alert) {
+                this.alert.container.remove();    // This is quite obviously a hack, need a "dispose" method on AlertDialog
+            }
+
+            this.disposed = true;
+        }
+
+        paintAxis() {
+
+            if (typeof this.track.paintAxis === 'function') {
+
+                // Set the canvas buffer size, this is the resolution it is drawn at.  This is done here in case the browser
+                // has been drug between screens at different dpi resolutions since the last repaint
+                const {width, height} = this.axisCanvas.getBoundingClientRect();
+                const dpi = window.devicePixelRatio || 1;
+                this.axisCanvas.height = dpi * height;
+                this.axisCanvas.width = dpi * width;
+
+                // Get a scaled context to draw aon
+                const axisCanvasContext = this.axisCanvas.getContext('2d');
+                axisCanvasContext.scale(dpi, dpi);
+
+                this.track.paintAxis(axisCanvasContext, width, height);
+            }
+        }
+
+        maxViewportContentHeight() {
+            return Math.max(this.viewports.map(viewport => viewport.getContentHeight()))
+        }
+
+    }
+
+    function renderSVGAxis(context, track, axisCanvas, deltaX, deltaY) {
+
+        if (typeof track.paintAxis === 'function') {
+
+            const {y, width, height} = axisCanvas.getBoundingClientRect();
+
+            const str = (track.name || track.id).replace(/\W/g, '');
+            const id = `${str}_axis_guid_${domUtils.guid()}`;
+
+            context.saveWithTranslationAndClipRect(id, deltaX, y + deltaY, width, height, 0);
+
+            track.paintAxis(context, width, height);
+
+            context.restore();
+        }
+
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const DEFAULT_COLOR$1 = 'rgb(150, 150, 150)';
+
+    class WigTrack extends TrackBase {
+
+        static defaults = {
+            height: 50,
+            flipAxis: false,
+            logScale: false,
+            windowFunction: 'mean',
+            graphType: 'bar',
+            autoscale: true,
+            normalize: undefined,
+            scaleFactor: undefined
+        }
+
+        constructor(config, browser) {
+            super(config, browser);
+        }
+
+        init(config) {
+
+            super.init(config);
+
+            this.type = "wig";
+            this.featureType = 'numeric';
+            this.paintAxis = paintAxis;
+
+            const format = config.format ? config.format.toLowerCase() : config.format;
+            if (config.featureSource) {
+                this.featureSource = config.featureSource;
+                delete config.featureSource;
+            } else if ("bigwig" === format) {
+                this.featureSource = new BWSource(config, this.browser.genome);
+            } else if ("tdf" === format) {
+                this.featureSource = new TDFSource(config, this.browser.genome);
+            } else {
+                this.featureSource = FeatureSource(config, this.browser.genome);
+            }
+
+
+            // Override autoscale default
+            if(config.max === undefined || config.autoscale === true) {
+                this.autoscale = true;
+            } else {
+                this.dataRange = {
+                    min: config.min || 0,
+                    max: config.max
+                };
+            }
+        }
+
+        async postInit() {
+            const header = await this.getHeader();
+            if (this.disposed) return   // This track was removed during async load
+            if (header) this.setTrackProperties(header);
+        }
+
+        async getFeatures(chr, start, end, bpPerPixel) {
+            const features = await this.featureSource.getFeatures({
+                chr,
+                start,
+                end,
+                bpPerPixel,
+                visibilityWindow: this.visibilityWindow,
+                windowFunction: this.windowFunction
+            });
+            if (this.normalize && this.featureSource.normalizationFactor) {
+                const scaleFactor = this.featureSource.normalizationFactor;
+                for (let f of features) {
+                    f.value *= scaleFactor;
+                }
+            }
+            if (this.scaleFactor) {
+                const scaleFactor = this.scaleFactor;
+                for (let f of features) {
+                    f.value *= scaleFactor;
+                }
+            }
+            return features
+        }
+
+        menuItemList() {
+            let items = [];
+
+            if (this.flipAxis !== undefined) {
+                items.push('<hr>');
+                items.push({
+                    label: "Flip y-axis",
+                    click: () => {
+                        this.flipAxis = !this.flipAxis;
+                        this.trackView.repaintViews();
+                    }
+                });
+            }
+
+            items = items.concat(MenuUtils.numericDataMenuItems(this.trackView));
+
+            return items
+        }
+
+        async getHeader() {
+
+            if (typeof this.featureSource.getHeader === "function") {
+                this.header = await this.featureSource.getHeader();
+            }
+            return this.header
+        }
+
+        // TODO: refactor to igvUtils.js
+        getScaleFactor(min, max, height, logScale) {
+            const scale = logScale ? height / (Math.log10(max + 1) - (min <= 0 ? 0 : Math.log10(min + 1))) : height / (max - min);
+            return scale
+        }
+
+        computeYPixelValue(yValue, yScaleFactor) {
+            return (this.flipAxis ? (yValue - this.dataRange.min) : (this.dataRange.max - yValue)) * yScaleFactor
+        }
+
+        computeYPixelValueInLogScale(yValue, yScaleFactor) {
+            let maxValue = this.dataRange.max;
+            let minValue = this.dataRange.min;
+            if (maxValue <= 0) return 0 // TODO:
+            if (minValue <= -1) minValue = 0;
+            minValue = (minValue <= 0) ? 0 : Math.log10(minValue + 1);
+            maxValue = Math.log10(maxValue + 1);
+            yValue = Math.log10(yValue + 1);
+            return ((this.flipAxis ? (yValue - minValue) : (maxValue - yValue)) * yScaleFactor)
+        }
+
+        draw(options) {
+
+            const features = options.features;
+            const ctx = options.context;
+            const bpPerPixel = options.bpPerPixel;
+            const bpStart = options.bpStart;
+            const pixelWidth = options.pixelWidth;
+            options.pixelHeight;
+            const bpEnd = bpStart + pixelWidth * bpPerPixel + 1;
+            const posColor = this.color || DEFAULT_COLOR$1;
+
+            let baselineColor;
+            if (typeof posColor === "string" && posColor.startsWith("rgb(")) {
+                baselineColor = IGVColor.addAlpha(posColor, 0.1);
+            }
+            const scaleFactor = this.getScaleFactor(this.dataRange.min, this.dataRange.max, options.pixelHeight, this.logScale);
+            const yScale = (yValue) => this.logScale
+                ? this.computeYPixelValueInLogScale(yValue, scaleFactor)
+                : this.computeYPixelValue(yValue, scaleFactor);
+
+            if (features && features.length > 0) {
+
+                if (this.dataRange.min === undefined) this.dataRange.min = 0;
+
+                // Max can be less than min if config.min is set but max left to autoscale.   If that's the case there is
+                // nothing to paint.
+                if (this.dataRange.max > this.dataRange.min) {
+
+                    let lastPixelEnd = -1;
+                    let lastY;
+                    const y0 = yScale(0);
+                    for (let f of features) {
+
+                        if (f.end < bpStart) continue
+                        if (f.start > bpEnd) break
+
+                        const x = Math.floor((f.start - bpStart) / bpPerPixel);
+                        if (isNaN(x)) continue
+
+                        let y = yScale(f.value);
+
+                        const rectEnd = Math.ceil((f.end - bpStart) / bpPerPixel);
+                        const width = Math.max(1, rectEnd - x);
+
+                        const color = this.getColorForFeature(f);
+
+                        if (this.graphType === "points") {
+                            const pointSize = this.config.pointSize || 3;
+                            const px = x + width / 2;
+                            IGVGraphics.fillCircle(ctx, px, y, pointSize / 2, {"fillStyle": color, "strokeStyle": color});
+
+                        } else if (this.graphType === "line") {
+                            if (lastY != undefined) {
+                                IGVGraphics.strokeLine(ctx, lastPixelEnd, lastY, x, y, {
+                                    "fillStyle": color,
+                                    "strokeStyle": color
+                                });
+                            }
+                            IGVGraphics.strokeLine(ctx, x, y, x + width, y, {"fillStyle": color, "strokeStyle": color});
+                        } else {
+                            const height = y - y0;
+                            IGVGraphics.fillRect(ctx, x, y0, width, height, {fillStyle: color});
+
+                        }
+                        lastPixelEnd = x + width;
+                        lastY = y;
+                    }
+
+                    // If the track includes negative values draw a baseline
+                    if (this.dataRange.min < 0) {
+                        const basepx = (this.dataRange.max / (this.dataRange.max - this.dataRange.min)) * options.pixelHeight;
+                        IGVGraphics.strokeLine(ctx, 0, basepx, options.pixelWidth, basepx, {strokeStyle: baselineColor});
+                    }
+                }
+            }
+
+            // Draw guidelines
+            if (this.config.hasOwnProperty('guideLines')) {
+                for (let line of this.config.guideLines) {
+                    if (line.hasOwnProperty('color') && line.hasOwnProperty('y') && line.hasOwnProperty('dotted')) {
+                        let y = yScale(line.y);
+                        let props = {
+                            'strokeStyle': line['color'],
+                            'strokeWidth': 2
+                        };
+                        if (line['dotted']) IGVGraphics.dashedLine(options.context, 0, y, options.pixelWidth, y, 5, props);
+                        else IGVGraphics.strokeLine(options.context, 0, y, options.pixelWidth, y, props);
+                    }
+                }
+            }
+        }
+
+        popupData(clickState, features) {
+
+            if (features === undefined) features = this.clickedFeatures(clickState);
+
+            if (features && features.length > 0) {
+
+                const genomicLocation = clickState.genomicLocation;
+                const popupData = [];
+
+                // Sort features based on distance from click
+                features.sort(function (a, b) {
+                    const distA = Math.abs((a.start + a.end) / 2 - genomicLocation);
+                    const distB = Math.abs((b.start + b.end) / 2 - genomicLocation);
+                    return distA - distB
+                });
+
+                // Display closest 10
+                const displayFeatures = features.length > 10 ? features.slice(0, 10) : features;
+
+                // Resort in ascending order
+                displayFeatures.sort(function (a, b) {
+                    return a.start - b.start
+                });
+
+                for (let selectedFeature of displayFeatures) {
+                    if (selectedFeature) {
+                        if (popupData.length > 0) {
+                            popupData.push('<hr/>');
+                        }
+                        let posString = (selectedFeature.end - selectedFeature.start) === 1 ?
+                            numberFormatter$1(selectedFeature.start + 1)
+                            : numberFormatter$1(selectedFeature.start + 1) + "-" + numberFormatter$1(selectedFeature.end);
+                        popupData.push({name: "Position:", value: posString});
+                        popupData.push({
+                            name: "Value:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;",
+                            value: numberFormatter$1(selectedFeature.value)
+                        });
+                    }
+                }
+                if (displayFeatures.length < features.length) {
+                    popupData.push("<hr/>...");
+                }
+
+                return popupData
+
+            } else {
+                return []
+            }
+        }
+
+        get supportsWholeGenome() {
+            return !this.config.indexURL && this.config.supportsWholeGenome !== false
+        }
+
+        /**
+         * Return color for feature.
+         * @param feature
+         * @returns {string}
+         */
+
+        getColorForFeature(f) {
+            let c = (f.value < 0 && this.altColor) ? this.altColor : this.color || DEFAULT_COLOR$1;
+            return (typeof c === "function") ? c(f.value) : c
+        }
+
+        /**
+         * Called when the track is removed.  Do any needed cleanup here
+         */
+        dispose() {
+            this.trackView = undefined;
+        }
+
+    }
+
+    /**
+     *
+     * @param cs - object containing
+     * 1) array of threshold values defining bin boundaries in ascending order
+     * 2) array of colors for bins  (length == thresholds.length + 1)
+     * @constructor
+     */
+    function BinnedColorScale(cs) {
+        this.thresholds = cs.thresholds;
+        this.colors = cs.colors;
+    }
+
+    BinnedColorScale.prototype.getColor = function (value) {
+
+        for (let threshold of this.thresholds) {
+            if (value < threshold) {
+                return this.colors[this.thresholds.indexOf(threshold)]
+            }
+        }
+
+        return this.colors[this.colors.length - 1]
+
+    };
+
+    /**
+     *
+     * @param scale - object with the following properties
+     *           low
+     *           lowR
+     *           lowG
+     *           lowB
+     *           high
+     *           highR
+     *           highG
+     *           highB
+     *
+     * @constructor
+     */
+    function GradientColorScale(scale) {
+
+        this.scale = scale;
+        this.lowColor = "rgb(" + scale.lowR + "," + scale.lowG + "," + scale.lowB + ")";
+        this.highColor = "rgb(" + scale.highR + "," + scale.highG + "," + scale.highB + ")";
+        this.diff = scale.high - scale.low;
+
+    }
+
+    GradientColorScale.prototype.getColor = function (value) {
+
+        var scale = this.scale, r, g, b, frac;
+
+        if (value <= scale.low) return this.lowColor
+        else if (value >= scale.high) return this.highColor
+
+        frac = (value - scale.low) / this.diff;
+        r = Math.floor(scale.lowR + frac * (scale.highR - scale.lowR));
+        g = Math.floor(scale.lowG + frac * (scale.highG - scale.lowG));
+        b = Math.floor(scale.lowB + frac * (scale.highB - scale.lowB));
+
+        return "rgb(" + r + "," + g + "," + b + ")"
+    };
+
+    class ConstantColorScale {
+        constructor(color) {
+            this.color = color;
+        }
+
+        getColor() {
+            return this.color
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class SegTrack extends TrackBase {
+
+        constructor(config, browser) {
+            super(config, browser);
+        }
+
+        init(config) {
+            super.init(config);
+
+            this.type = config.type || "seg";
+            if (this.type === 'maf') this.type = 'mut';
+            this.isLog = config.isLog;
+            this.displayMode = config.displayMode || "EXPANDED"; // EXPANDED | SQUISHED
+            this.height = config.height || 300;
+            this.maxHeight = config.maxHeight || 500;
+            this.squishedRowHeight = config.sampleSquishHeight || config.squishedRowHeight || 2;
+            this.expandedRowHeight = config.sampleExpandHeight || config.expandedRowHeight || 13;
+            this.sampleHeight = this.squishedRowHeight;      // Initial value, will get overwritten when rendered
+
+            if (config.color) {
+                this.color = config.color;
+            } else {
+                // Color scales for "seg" (copy number) tracks.
+                this.posColorScale = config.posColorScale ||
+                    new GradientColorScale({
+                        low: 0.1,
+                        lowR: 255,
+                        lowG: 255,
+                        lowB: 255,
+                        high: 1.5,
+                        highR: 255,
+                        highG: 0,
+                        highB: 0
+                    });
+                this.negColorScale = config.negColorScale ||
+                    new GradientColorScale({
+                        low: -1.5,
+                        lowR: 0,
+                        lowG: 0,
+                        lowB: 255,
+                        high: -0.1,
+                        highR: 255,
+                        highG: 255,
+                        highB: 255
+                    });
+
+                // Default color table for mutation (mut and maf) tracks
+                if (this.type === "mut") {
+                    this.colorTable = new ColorTable(config.colorTable || MUT_COLORS);
+                }
+            }
+
+            this.sampleKeys = [];
+            this.sampleNames = new Map();
+            if (config.samples) {
+                // Explicit setting, keys == names
+                for (let s of config.samples) {
+                    this.sampleKeys.push(s);
+                    this.sampleNames.set(s, s);
+                }
+                this.explicitSamples = true;
+            }
+
+            //   this.featureSource = config.sourceType === "bigquery" ?
+            //       new igv.BigQueryFeatureSource(this.config) :
+
+            // Disable whole genome downsampling unless explicitly.
+            const configCopy = Object.assign({}, this.config);
+            configCopy.maxWGCount = configCopy.maxWGCount || Number.MAX_SAFE_INTEGER;
+            this.featureSource = FeatureSource(configCopy, this.browser.genome);
+
+            this.initialSort = config.sort;
+        }
+
+        async postInit() {
+            if (typeof this.featureSource.getHeader === "function") {
+                this.header = await this.featureSource.getHeader();
+                if(this.disposed) return;   // This track was removed during async load
+            }
+            // Set properties from track line
+            if (this.header) {
+                this.setTrackProperties(this.header);
+            }
+        }
+
+
+        menuItemList() {
+
+            const menuItems = [];
+            const lut =
+                {
+                    "SQUISHED": "Squish",
+                    "EXPANDED": "Expand",
+                    "FILL": "Fill"
+                };
+
+            menuItems.push('<hr/>');
+            menuItems.push("DisplayMode:");
+
+            const displayOptions = this.type === 'seg' ? ["SQUISHED", "EXPANDED", "FILL"] : ["SQUISHED", "EXPANDED"];
+
+            for (let displayMode of displayOptions) {
+
+                const checkBox = createCheckbox(lut[displayMode], displayMode === this.displayMode);
+                menuItems.push(
+                    {
+                        object: $$1(checkBox),
+                        click: () => {
+                            this.displayMode = displayMode;
+                            this.config.displayMode = displayMode;
+                            this.trackView.checkContentHeight();
+                            this.trackView.repaintViews();
+                            this.trackView.moveScroller(this.trackView.sampleNameViewport.trackScrollDelta);
+                        }
+                    });
+            }
+
+            return menuItems
+
+        }
+
+        hasSamples() {
+            return true   // SEG, MUT, and MAF tracks have samples by definition
+        }
+
+        getSamples() {
+            return {
+                names: this.sampleKeys.map(key => this.sampleNames.get(key)),
+                height: this.sampleHeight,
+                yOffset: 0
+            }
+        }
+
+        async getFeatures(chr, start, end) {
+            const features = await this.featureSource.getFeatures({chr, start, end});
+            if (this.initialSort) {
+                const sort = this.initialSort;
+                this.sortSamples(sort.chr, sort.start, sort.end, sort.direction, features);
+                this.initialSort = undefined;  // Sample order is sorted,
+            }
+            return features
+        }
+
+
+        draw({context, renderSVG, pixelTop, pixelWidth, pixelHeight, features, bpPerPixel, bpStart}) {
+
+            IGVGraphics.fillRect(context, 0, pixelTop, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+
+            if (features && features.length > 0) {
+
+                this.checkForLog(features);
+
+                // New segments could conceivably add new samples
+                this.updateSampleKeys(features);
+
+                // Create a map for fast id -> row lookup
+                const samples = {};
+                this.sampleKeys.forEach(function (id, index) {
+                    samples[id] = index;
+                });
+
+                let border;
+                switch (this.displayMode) {
+                    case "FILL":
+                        this.sampleHeight = pixelHeight / this.sampleKeys.length;
+                        border = 0;
+                        break
+
+                    case "SQUISHED":
+                        this.sampleHeight = this.squishedRowHeight;
+                        border = 0;
+                        break
+                    default:   // EXPANDED
+                        this.sampleHeight = this.expandedRowHeight;
+                        border = 1;
+                }
+                const rowHeight = this.sampleHeight;
+
+
+                // this.featureMap = new Map()
+
+                for (let segment of features) {
+                    segment.pixelRect = undefined;   // !important, reset this in case segment is not drawn
+                }
+
+                const pixelBottom = pixelTop + pixelHeight;
+                const bpEnd = bpStart + pixelWidth * bpPerPixel + 1;
+                const xScale = bpPerPixel;
+
+                this.sampleYStart = undefined;
+                for (let f of features) {
+
+                    if (f.end < bpStart) continue
+                    if (f.start > bpEnd) break
+
+                    const sampleKey = f.sampleKey || f.sample;
+                    f.row = samples[sampleKey];
+                    const y = f.row * rowHeight + border;
+
+                    if (undefined === this.sampleYStart) {
+                        this.sampleYStart = y;
+                    }
+
+                    const bottom = y + rowHeight;
+
+                    if (bottom < pixelTop || y > pixelBottom) {
+                        continue
+                    }
+
+                    const segmentStart = Math.max(f.start, bpStart);
+                    // const segmentStart = segment.start;
+                    let x = Math.round((segmentStart - bpStart) / xScale);
+
+                    const segmentEnd = Math.min(f.end, bpEnd);
+                    // const segmentEnd = segment.end;
+                    const x1 = Math.round((segmentEnd - bpStart) / xScale);
+                    let w = Math.max(1, x1 - x);
+
+                    let color;
+                    if (this.color) {
+                        if (typeof this.color === "function") {
+                            color = this.color(f);
+                        } else {
+                            color = this.color;
+                        }
+                    } else if (this.colorTable) {
+                        color = this.colorTable.getColor(f.value.toLowerCase());
+                    }
+
+                    let h;
+                    if ("mut" === this.type) {
+                        h = rowHeight - 2 * border;
+                        if (w < 3) {
+                            w = 3;
+                            x -= 1;
+                        }
+                    } else {
+                        // Assume seg track
+                        let value = f.value;
+                        if (!this.isLog) {
+                            value = IGVMath.log2(value / 2);
+                        }
+                        if (value < -0.1) {
+                            color = this.negColorScale.getColor(value);
+                        } else if (value > 0.1) {
+                            color = this.posColorScale.getColor(value);
+                        } else {
+                            color = "white";
+                        }
+
+                        let sh = rowHeight;
+                        if (rowHeight < 0.25) {
+                            const f = 0.1 + 2 * Math.abs(value);
+                            sh = Math.min(1, f * rowHeight);
+                        }
+                        h = sh - 2 * border;
+                    }
+
+
+                    f.pixelRect = {x, y, w, h};
+
+                    // Use for diagnostic rendering
+                    // context.fillStyle = randomRGB(180, 240)
+                    // context.fillStyle = randomGrey(200, 255)
+                    context.fillStyle = color;
+                    context.fillRect(x, y, w, h);
+                }
+
+            }
+
+        }
+
+
+        checkForLog(features) {
+            if (this.isLog === undefined) {
+                this.isLog = false;
+                for (let feature of features) {
+                    if (feature.value < 0) {
+                        this.isLog = true;
+                        return
+                    }
+                }
+            }
+        }
+
+        /**
+         * Optional method to compute pixel height to accomodate the list of features.  The implementation below
+         * has side effects (modifiying the samples hash).  This is unfortunate, but harmless.
+         *
+         * Note displayMode "FILL" is handled by the viewport
+         *
+         * @param features
+         * @returns {number}
+         */
+        computePixelHeight(features) {
+            if (!features) return 0
+            const sampleHeight = ("SQUISHED" === this.displayMode) ? this.squishedRowHeight : this.expandedRowHeight;
+            this.updateSampleKeys(features);
+            return this.sampleKeys.length * sampleHeight
+        }
+
+        /**
+         * Sort samples by the average value over the genomic range in the direction indicated (1 = ascending, -1 descending)
+         */
+        async sortSamples(chr, start, end, direction, featureList) {
+
+            if (!featureList) {
+                featureList = await this.featureSource.getFeatures({chr, start, end});
+            }
+            if (!featureList) return
+
+            this.updateSampleKeys(featureList);
+
+            const scores = {};
+            const d2 = (direction === "ASC" ? 1 : -1);
+
+            const sortSeg = () => {
+                // Compute weighted average score for each sample
+                const bpLength = end - start + 1;
+                for (let segment of featureList) {
+                    if (segment.end < start) continue
+                    if (segment.start > end) break
+                    const min = Math.max(start, segment.start);
+                    const max = Math.min(end, segment.end);
+                    const f = (max - min) / bpLength;
+                    const sampleKey = segment.sampleKey || segment.sample;
+                    const s = scores[sampleKey] || 0;
+                    scores[sampleKey] = s + f * segment.value;
+                }
+
+                // Now sort sample names by score
+                this.sampleKeys.sort(function (a, b) {
+                    let s1 = scores[a];
+                    let s2 = scores[b];
+                    if (!s1) s1 = d2 * Number.MAX_VALUE;
+                    if (!s2) s2 = d2 * Number.MAX_VALUE;
+                    if (s1 === s2) return 0
+                    else if (s1 > s2) return d2
+                    else return d2 * -1
+                });
+            };
+
+            const sortMut = () => {
+                // Compute weighted average score for each sample
+                for (let segment of featureList) {
+                    if (segment.end < start) continue
+                    if (segment.start > end) break
+                    const sampleKey = segment.sampleKey || segment.sample;
+                    if (!scores.hasOwnProperty(sampleKey) || segment.value.localeCompare(scores[sampleKey]) > 0) {
+                        scores[sampleKey] = segment.value;
+                    }
+                }
+                // Now sort sample names by score
+                this.sampleKeys.sort(function (a, b) {
+                    let sa = scores[a] || "";
+                    let sb = scores[b] || "";
+                    return d2 * (sa.localeCompare(sb))
+                });
+            };
+
+            if ("mut" === this.type) {
+                sortMut();
+            } else {
+                sortSeg();
+            }
+
+            this.trackView.repaintViews();
+
+        }
+
+        clickedFeatures(clickState) {
+
+            const allFeatures = super.clickedFeatures(clickState);
+            const y = clickState.y;
+            return allFeatures.filter(function (feature) {
+                const rect = feature.pixelRect;
+                return rect && y >= rect.y && y <= (rect.y + rect.h)
+            })
+
+        }
+
+        hoverText(clickState) {
+            const features = this.clickedFeatures(clickState);
+            if(features && features.length > 0) {
+                return `${features[0].sample}: ${features[0].value}`
+            }
+        }
+
+        popupData(clickState, featureList) {
+
+            if(featureList === undefined) featureList = this.clickedFeatures(clickState);
+
+            const items = [];
+
+            for (let feature of featureList) {
+
+                // Double line divider between features
+                if (items.length > 0) {
+                    items.push('<hr/>');
+                    items.push('<hr/>');
+                }
+
+                // hack for whole genome features, which save the original feature as "_f"
+                const f = feature._f || feature;
+
+                const data = (typeof f.popupData === 'function') ?
+                    f.popupData(this.type, this.browser.genome.id) :
+                    this.extractPopupData(f);
+                Array.prototype.push.apply(items, data);
+
+            }
+
+            return items
+        }
+
+        contextMenuItemList(clickState) {
+
+            const referenceFrame = clickState.viewport.referenceFrame;
+            const genomicLocation = clickState.genomicLocation;
+
+            // Define a region 5 "pixels" wide in genomic coordinates
+            const sortDirection = this.config.sort ?
+                (this.config.sort.direction === "ASC" ? "DESC" : "ASC") :      // Toggle from previous sort
+                "DESC";
+            const bpWidth = referenceFrame.toBP(2.5);
+
+            const sortHandler = (sort) => {
+                const viewport = clickState.viewport;
+                const features = viewport.cachedFeatures;
+                this.sortSamples(sort.chr, sort.start, sort.end, sort.direction, features);
+            };
+
+            const sortLabel = this.type === 'seg' ? 'Sort by value' : 'Sort by type';
+
+            return [
+                {
+                    label: sortLabel, click: (e) => {
+
+
+                        const sort = {
+                            direction: sortDirection,
+                            chr: clickState.viewport.referenceFrame.chr,
+                            start: genomicLocation - bpWidth,
+                            end: genomicLocation + bpWidth
+
+                        };
+
+                        sortHandler(sort);
+
+                        this.config.sort = sort;
+
+                    }
+                }]
+
+        }
+
+        get supportsWholeGenome() {
+            return (this.config.indexed === false || !this.config.indexURL) && this.config.supportsWholeGenome !== false
+        }
+
+        updateSampleKeys(featureList) {
+
+            if (this.explicitSamples) return
+
+            for (let feature of featureList) {
+                const sampleKey = feature.sampleKey || feature.sample;
+                if (!this.sampleNames.has(sampleKey)) {
+                    this.sampleNames.set(sampleKey, feature.sample);
+                    this.sampleKeys.push(sampleKey);
+                }
+            }
+        }
+    }
+
+    // Mut and MAF file default color table
+
+    const MUT_COLORS = {
+
+        "indel": "rgb(0,200,0)",
+        "targeted region": "rgb(236,155,43)",
+        "truncating": "rgb(	150,0,0)",
+        "non-coding transcript": "rgb(0,0,150)",
+
+        // Colors from https://www.nature.com/articles/nature11404
+        "synonymous": "rgb(109,165,95)",
+        "silent": "rgb(109,135,80)",
+        "missense_mutation": "rgb(72,130,187)",
+        "missense": "rgb(72,130,187)",
+        "splice site": "rgb(143,83,155)",
+        "splice_region": "rgb(143,83,155)",
+        "nonsense": "rgb(216, 57,81)",
+        "nonsense_mutation": "rgb(216, 57,81)",
+        "frame_shift_del": "rgb(226,135,65)",
+        "frame_shift_ins": "rgb(226,135,65)",
+        "in_frame_del": "rgb(247,235,94)",
+        "in_frame_ins": "rgb(247,235,94)",
+        "*other*": "rgb(159,91,50)"
+        //
+        // 3'Flank
+        // 3'UTR
+        // 5'Flank
+        // 5'UTR
+        // Frame_Shift_Del
+        // Frame_Shift_Ins
+        // IGR
+        // In_Frame_Del
+        // In_Frame_Ins
+        // Intron
+        // Missense_Mutation
+        // Nonsense_Mutation
+        // Nonstop_Mutation
+        // RNA
+        // Silent
+        // Splice_Region
+        // Splice_Site
+        // Translation_Start_Site
+        // Variant_Classification
+
+    };
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2017 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+
+    /**
+     * Represents 2 or more wig tracks overlaid on a common viewport.
+     */
+    class MergedTrack extends TrackBase {
+
+        constructor(config, browser) {
+            super(config, browser);
+            this.type = "merged";
+            this.featureType = 'numeric';
+            this.paintAxis = paintAxis;
+            this.graphType = config.graphType;
+        }
+
+        init(config) {
+            if (!config.tracks) {
+                throw Error("Error: no tracks defined for merged track" + config)
+            }
+
+            super.init(config);
+        }
+
+        async postInit() {
+
+            this.tracks = [];
+            const p = [];
+            for (let tconf of this.config.tracks) {
+                tconf.isMergedTrack = true;
+                const t = await this.browser.createTrack(tconf);
+                if (t) {
+                    t.autoscale = false;     // Scaling done from merged track
+                    this.tracks.push(t);
+                } else {
+                    console.warn("Could not create track " + tconf);
+                }
+
+                if (typeof t.postInit === 'function') {
+                    p.push(t.postInit());
+                }
+            }
+
+            this.flipAxis = this.config.flipAxis ? this.config.flipAxis : false;
+            this.logScale = this.config.logScale ? this.config.logScale : false;
+            this.autoscale = this.config.autoscale || this.config.max === undefined;
+            if (!this.autoscale) {
+                this.dataRange = {
+                    min: this.config.min || 0,
+                    max: this.config.max
+                };
+            }
+            for (let t of this.tracks) {
+                t.autoscale = false;
+                t.dataRange = this.dataRange;
+            }
+
+            this.height = this.config.height || 50;
+
+            return Promise.all(p)
+        }
+
+        get height() {
+            return this._height
+        }
+
+        set height(h) {
+            this._height = h;
+            if (this.tracks) {
+                for (let t of this.tracks) {
+                    t.height = h;
+                    t.config.height = h;
+                }
+            }
+        }
+
+        menuItemList() {
+            let items = [];
+            if (this.flipAxis !== undefined) {
+                items.push({
+                    label: "Flip y-axis",
+                    click: () => {
+                        this.flipAxis = !this.flipAxis;
+                        this.trackView.repaintViews();
+                    }
+                });
+            }
+
+            items = items.concat(MenuUtils.numericDataMenuItems(this.trackView));
+
+            return items
+        }
+
+        /**
+         * Returns a MergedFeatureCollection containing an array of features for the specified range, 1 for each track.
+         */
+        async getFeatures(chr, bpStart, bpEnd, bpPerPixel) {
+
+            const promises = this.tracks.map((t) => t.getFeatures(chr, bpStart, bpEnd, bpPerPixel));
+            const featureArrays = await Promise.all(promises);
+            return new MergedFeatureCollection(featureArrays)
+        }
+
+        draw(options) {
+
+            const mergedFeatures = options.features;    // A MergedFeatureCollection
+
+            for (let i = 0, len = this.tracks.length; i < len; i++) {
+                const trackOptions = Object.assign({}, options);
+                trackOptions.features = mergedFeatures.featureArrays[i];
+                this.tracks[i].dataRange = this.dataRange;
+                this.tracks[i].flipAxis = this.flipAxis;
+                this.tracks[i].logScale = this.logScale;
+                if (this.graphType) {
+                    this.tracks[i].graphType = this.graphType;
+                }
+                this.tracks[i].draw(trackOptions);
+            }
+        }
+
+        popupData(clickState) {
+
+            if(clickState.viewport && clickState.viewport.cachedFeatures) {
+
+                const featuresArray = clickState.viewport.cachedFeatures.featureArrays;
+
+                if (featuresArray && featuresArray.length === this.tracks.length) {
+                    // Array of feature arrays, 1 for each track
+                    const popupData = [];
+                    for (let i = 0; i < this.tracks.length; i++) {
+                        if (i > 0) popupData.push('<hr/>');
+                        popupData.push(`<div style=background-color:rgb(245,245,245);border-bottom-style:dashed;border-bottom-width:1px;padding-bottom:5px;padding-top:10px;font-weight:bold;font-size:larger >${this.tracks[i].name}</div>`);
+                        const trackPopupData = this.tracks[i].popupData(clickState, featuresArray[i]);
+                        popupData.push(...trackPopupData);
+
+                    }
+                    return popupData
+                }
+            }
+        }
+
+        clickedFeatures(clickState) {
+
+
+            // We use the cached features rather than method to avoid async load.  If the
+            // feature is not already loaded this won't work,  but the user wouldn't be mousing over it either.
+            const mergedFeaturesCollection = clickState.viewport.cachedFeatures;
+
+            if(!mergedFeaturesCollection) {
+                return [];
+            }
+
+            const genomicLocation = clickState.genomicLocation;
+            const clickedFeatures = [];
+            for(let features of mergedFeaturesCollection.featureArrays) {
+                // When zoomed out we need some tolerance around genomicLocation
+                const tolerance = (clickState.referenceFrame.bpPerPixel > 0.2) ? 3 * clickState.referenceFrame.bpPerPixel : 0.2;
+                const ss = genomicLocation - tolerance;
+                const ee = genomicLocation + tolerance;
+                const tmp = (FeatureUtils.findOverlapping(features, ss, ee));
+                for(let f of tmp) {
+                    clickedFeatures.push(f);
+                }
+            }
+            return clickedFeatures;
+        }
+
+
+        get supportsWholeGenome() {
+            return this.tracks.every(track => track.supportsWholeGenome)
+        }
+    }
+
+
+    class MergedFeatureCollection {
+
+        constructor(featureArrays) {
+            this.featureArrays = featureArrays;
+        }
+
+        getMax(start, end) {
+            let max = -Number.MAX_VALUE;
+            for (let a of this.featureArrays) {
+                for (let f of a) {
+                    if (typeof f.value !== 'undefined' && !Number.isNaN(f.value)) {
+                        if (f.end < start) {
+                            continue
+                        }
+                        if (f.start > end) {
+                            break
+                        }
+                        max = Math.max(max, f.value);
+                    }
+                }
+            }
+            return max
+        }
+
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2018 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    function getArcType(config) {
+        if (!config.arcType) {
+            return "nested"
+        }
+        switch (config.arcType) {
+            case "chiapet":
+                return "inView"
+            case "chiapetoutbound":
+                return "partialInView"
+            default:
+                return config.arcType
+        }
+    }
+
+    const DEFAULT_ARC_COLOR = "rgb(180,25,137)";
+
+    class InteractionTrack extends TrackBase {
+
+        static defaults = {
+            height: 250,
+            theta: Math.PI / 4,
+            arcOrientation: true,
+            showBlocks: true,
+            blockHeight: 3,
+            thickness: 1,
+            alpha: 0.02,
+            logScale: true,
+        }
+
+        constructor(config, browser) {
+            super(config, browser);
+        }
+
+        init(config) {
+
+            super.init(config);
+
+            this.sinTheta = Math.sin(this.theta);
+            this.cosTheta = Math.cos(this.theta);
+            this.arcType = getArcType(config);   // nested | proportional | inView | partialInView
+            this.alpha = config.alpha || 0.02;  // was: 0.15
+            this.painter = {flipAxis: !this.arcOrientation, dataRange: this.dataRange, paintAxis: paintAxis};
+
+            if (config.valueColumn) {
+                this.valueColumn = config.valueColumn;
+                this.hasValue = true;
+            } else if (config.useScore) {
+                this.hasValue = true;
+                this.valueColumn = "score";
+            }
+
+            if (config.max) {
+                this.dataRange = {
+                    min: config.min || 0,
+                    max: config.max
+                };
+                this.autoscale = false;
+            } else {
+                this.autoscale = true;
+            }
+
+            // Create the FeatureSource and override the default whole genome method
+            if (config.featureSource) {
+                this.featureSource = config.featureSource;
+                delete config._featureSource;
+            } else {
+                this.featureSource = FeatureSource(config, this.browser.genome);
+                this.featureSource.getWGFeatures = getWGFeatures;
+            }
+        }
+
+        async postInit() {
+
+            if (typeof this.featureSource.getHeader === "function") {
+                this.header = await this.featureSource.getHeader();
+                if (this.disposed) return;   // This track was removed during async load
+            }
+
+            // Set properties from track line
+            if (this.header) {
+                this.setTrackProperties(this.header);
+            }
+
+            if (this.visibilityWindow === undefined && typeof this.featureSource.defaultVisibilityWindow === 'function') {
+                this.visibilityWindow = await this.featureSource.defaultVisibilityWindow();
+                this.featureSource.visibilityWindow = this.visibilityWindow;  // <- this looks odd
+            }
+
+            return this
+        }
+
+        get supportsWholeGenome() {
+            return true
+        }
+
+        async getFeatures(chr, start, end) {
+            const visibilityWindow = this.visibilityWindow;
+            const features = await this.featureSource.getFeatures({chr, start, end, visibilityWindow});
+
+            // Check for score or value
+            if (this.hasValue === undefined && features && features.length > 0) {
+                this.hasValue = features[0].score !== undefined;
+            }
+
+            return features
+        }
+
+        draw(options) {
+
+            if (this.arcType === "proportional") {
+                this.drawProportional(options);
+            } else if (this.arcType === "inView" || this.arcType === "partialInView") {
+                this.drawProportional(options);
+            } else {
+                this.drawNested(options);
+            }
+        }
+
+        drawNested(options) {
+
+            const ctx = options.context;
+            const pixelWidth = options.pixelWidth;
+            const pixelHeight = options.pixelHeight;
+            const viewportWidth = options.viewportWidth;
+            const bpPerPixel = options.bpPerPixel;
+            const bpStart = options.bpStart;
+            const xScale = bpPerPixel;
+
+            IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+
+            const featureList = options.features;
+
+            if (featureList) {
+
+                // Autoscale theta
+                autoscaleNested.call(this);
+                const y = this.arcOrientation ? options.pixelHeight : 0;
+                const direction = this.arcOrientation;
+
+                ctx.font = "8px sans-serif";
+                ctx.textAlign = "center";
+
+                for (let feature of featureList) {
+
+                    // Reset transient property drawState.  An undefined value => feature has not been drawn.
+                    feature.drawState = undefined;
+
+                    let color;
+                    if (typeof this.color === 'function') {
+                        color = this.color(feature);
+                    } else {
+                        color = this.color || feature.color || DEFAULT_ARC_COLOR;
+                        if (color && this.config.useScore) {
+                            color = getAlphaColor(color, scoreShade(feature.score));
+                        }
+                    }
+
+                    ctx.lineWidth = feature.thickness || this.thickness || 1;
+
+                    if (feature.chr1 === feature.chr2 || feature.chr === 'all') {
+
+                        const {m1, m2} = getMidpoints(feature, this.browser.genome);
+
+                        let pixelStart = Math.round((m1 - bpStart) / xScale);
+                        let pixelEnd = Math.round((m2 - bpStart) / xScale);
+                        if (pixelEnd < 0 || pixelStart > pixelWidth) continue
+
+                        let w = (pixelEnd - pixelStart);
+                        if (w < 3) {
+                            w = 3;
+                            pixelStart--;
+                        }
+
+                        const a = w / 2;
+                        const r = a / this.sinTheta;
+                        const b = this.cosTheta * r;
+                        const xc = pixelStart + a;
+
+                        let yc, startAngle, endAngle;
+                        if (direction) { // UP
+                            yc = this.height + b;
+                            startAngle = Math.PI + Math.PI / 2 - this.theta;
+                            endAngle = Math.PI + Math.PI / 2 + this.theta;
+                        } else { // DOWN
+                            yc = -b;
+                            startAngle = Math.PI / 2 - this.theta;
+                            endAngle = Math.PI / 2 + this.theta;
+                        }
+
+                        if (this.showBlocks && feature.chr !== 'all') {
+                            const s1 = (feature.start1 - bpStart) / xScale;
+                            const e1 = (feature.end1 - bpStart) / xScale;
+                            const s2 = (feature.start2 - bpStart) / xScale;
+                            const e2 = (feature.end2 - bpStart) / xScale;
+                            const hb = this.arcOrientation ? -this.blockHeight : this.blockHeight;
+                            ctx.fillRect(s1, y, e1 - s1, hb);
+                            ctx.fillRect(s2, y, e2 - s2, hb);
+                        }
+
+                        // Alpha shade (de-emphasize) arcs that extend beyond viewport, unless alpha shading is used for score.
+                        if (color && !this.config.useScore && w > viewportWidth) {
+                            color = getAlphaColor(color, this.alpha);
+                        }
+                        ctx.strokeStyle = color;
+                        ctx.fillStyle = color;
+                        ctx.beginPath();
+                        ctx.arc(xc, yc, r, startAngle, endAngle, false);
+                        ctx.stroke();
+                        feature.drawState = {xc, yc, r};
+                    } else {
+
+                        let pixelStart = Math.round((feature.start - bpStart) / xScale);
+                        let pixelEnd = Math.round((feature.end - bpStart) / xScale);
+                        if (pixelEnd < 0 || pixelStart > pixelWidth) continue
+
+                        let w = (pixelEnd - pixelStart);
+                        if (w < 3) {
+                            w = 3;
+                            pixelStart--;
+                        }
+                        const otherChr = feature.chr === feature.chr1 ? feature.chr2 : feature.chr1;
+                        ctx.strokeStyle = color;
+                        // get a sense of trans "spread"
+                        ctx.fillStyle = getAlphaColor(getChrColor(otherChr), 0.5);
+                        // ctx.fillStyle = color
+
+                        if (direction) {
+                            // UP
+                            ctx.fillRect(pixelStart, this.height / 2, w, this.height / 2);
+                            ctx.fillText(otherChr, pixelStart + w / 2, this.height / 2 - 5);
+                            feature.drawState = {x: pixelStart, y: this.height / 2, w: w, h: this.height / 2};
+                        } else {
+                            ctx.fillRect(pixelStart, 0, w, this.height / 2);
+                            ctx.fillText(otherChr, pixelStart + w / 2, this.height / 2 + 13);
+                            feature.drawState = {x: pixelStart, y: 0, w: w, h: this.height / 2};
+                        }
+                    }
+                }
+            }
+
+            function autoscaleNested() {
+                let max = 0;
+                for (let feature of featureList) {
+                    let pixelStart = (feature.start - bpStart) / xScale;
+                    let pixelEnd = (feature.end - bpStart) / xScale;
+                    if (pixelStart >= 0 && pixelEnd <= pixelWidth) {
+                        max = Math.max(max, pixelEnd - pixelStart);
+                    }
+                }
+                let a = Math.min(viewportWidth, max) / 2;
+                if (max > 0) {
+                    let coa = (pixelHeight - 10) / a;
+                    this.theta = estimateTheta(coa);
+                    this.sinTheta = Math.sin(this.theta);
+                    this.cosTheta = Math.cos(this.theta);
+                }
+            }
+        }
+
+        getScaleFactor(min, max, height, logScale) {
+            const scale = logScale ? height / (Math.log10(max + 1) - (min <= 0 ? 0 : Math.log10(min + 1))) : height / (max - min);
+            return scale
+        }
+
+        drawProportional(options) {
+
+            const ctx = options.context;
+            const pixelWidth = options.pixelWidth;
+            const pixelHeight = options.pixelHeight;
+            const bpPerPixel = options.bpPerPixel;
+            const bpStart = options.bpStart;
+            const xScale = bpPerPixel;
+            const refStart = options.referenceFrame.start;
+            const refEnd = options.referenceFrame.end;
+
+
+            IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+
+            const featureList = options.features;
+
+            if (featureList && featureList.length > 0) {
+
+                // we use the min as a filter but not moving the axis
+                const effectiveMin = 0;
+                const yScale = this.getScaleFactor(effectiveMin, this.dataRange.max, options.pixelHeight - 1, this.logScale);
+                const y = this.arcOrientation ? options.pixelHeight : 0;
+
+                for (let feature of featureList) {
+
+                    // Reset transient property drawState.  An undefined value => feature has not been drawn.
+                    feature.drawState = undefined;
+
+                    const value = this.valueColumn ? feature[this.valueColumn] : feature.score;
+                    if (value === undefined || Number.isNaN(value)) continue
+
+                    const radiusY = Math.round((this.logScale ? Math.log10(value + 1) : value) * yScale);
+
+                    if (feature.chr1 === feature.chr2 || feature.chr === 'all') {
+
+                        const {m1, m2} = getMidpoints(feature, this.browser.genome);
+
+                        let pixelStart = Math.round((m1 - bpStart) / xScale);
+                        let pixelEnd = Math.round((m2 - bpStart) / xScale);
+                        let w = (pixelEnd - pixelStart);
+                        if (w < 3) {
+                            w = 3;
+                            pixelStart--;
+                        }
+
+                        // Various filters
+                        if (value < this.dataRange.min || value > this.dataRange.max) continue
+                        if ("proportional" !== this.arcType) {
+                            const showOutbound = (this.arcType === "partialInView");
+                            const within = (m1 >= refStart && m2 <= refEnd);
+                            let outBound = false;
+                            let inBound = false;
+                            if (!within && showOutbound) {
+                                outBound = (refStart <= m1 && m1 <= refEnd);
+                                if (!outBound) inBound = (refStart <= m2 && m2 <= refEnd);
+                            }
+                            if (!(within || outBound || inBound)) continue
+                        }
+
+
+                        const radiusX = w / 2;
+                        const xc = pixelStart + w / 2;
+                        feature.drawState = {xc, yc: y, radiusX, radiusY};
+
+                        // const arcKey = ((pixelStart << 16) | pixelEnd)
+                        // let arc = arcCaches.get(arcKey)
+                        // if (arc !== undefined) {
+                        //     if (arc.has(radiusY)) {
+                        //         continue
+                        //     }
+                        //     arc.add(radiusY)
+                        // } else {
+                        //     let arcHeights = new Set()
+                        //     arcHeights.add(radiusY)
+                        //     arcCaches.set(arcKey, arcHeights)
+                        // }
+
+                        const counterClockwise = this.arcOrientation ? true : false;
+                        const color = feature.color || this.color;
+                        ctx.strokeStyle = color;
+                        ctx.lineWidth = feature.thickness || this.thickness || 1;
+
+                        if (true === ctx.isSVG) {
+                            ctx.strokeEllipse(xc, y, radiusX, radiusY, 0, 0, Math.PI, counterClockwise);
+                        } else {
+                            ctx.beginPath();
+                            ctx.ellipse(xc, y, radiusX, radiusY, 0, 0, Math.PI, counterClockwise);
+                            ctx.stroke();
+                        }
+
+                        if (this.alpha) {
+                            ctx.fillStyle = getAlphaColor(color, this.alpha);
+                            if (true === ctx.isSVG) {
+                                ctx.fillEllipse(xc, y, radiusX, radiusY, 0, 0, Math.PI, counterClockwise);
+                            } else {
+                                ctx.fill();
+                            }
+                        }
+
+                        if (this.showBlocks && feature.chr !== 'all') {
+                            ctx.fillStyle = color;
+                            const s1 = (feature.start1 - bpStart) / xScale;
+                            const e1 = (feature.end1 - bpStart) / xScale;
+                            const s2 = (feature.start2 - bpStart) / xScale;
+                            const e2 = (feature.end2 - bpStart) / xScale;
+                            const hb = this.arcOrientation ? -this.blockHeight : this.blockHeight;
+                            ctx.fillRect(s1, y, e1 - s1, hb);
+                            ctx.fillRect(s2, y, e2 - s2, hb);
+                        }
+
+                    } else {
+                        // Inter chromosome
+                        let pixelStart = Math.round((feature.start - bpStart) / xScale);
+                        let pixelEnd = Math.round((feature.end - bpStart) / xScale);
+                        if (pixelEnd < 0 || pixelStart > pixelWidth || value < this.dataRange.min || value > this.dataRange.max) continue
+
+                        const h = Math.min(radiusY, this.height - 13);   // Leave room for text
+                        let w = (pixelEnd - pixelStart);
+                        if (w < 3) {
+                            w = 3;
+                            pixelStart--;
+                        }
+                        const otherChr = feature.chr === feature.chr1 ? feature.chr2 : feature.chr1;
+                        ctx.font = "8px sans-serif";
+                        ctx.textAlign = "center";
+                        // get a sense of trans "spread"
+                        ctx.fillStyle = getAlphaColor(getChrColor(otherChr), 0.5);
+                        if (this.arcOrientation) {
+                            // UP
+                            const y = this.height - h;
+                            ctx.fillRect(pixelStart, y, w, h);
+                            ctx.fillText(otherChr, pixelStart + w / 2, y - 5);
+                            feature.drawState = {x: pixelStart, y, w, h};
+                        } else {
+                            ctx.fillRect(pixelStart, 0, w, h);
+                            ctx.fillText(otherChr, pixelStart + w / 2, h + 13);
+                            feature.drawState = {x: pixelStart, y: 0, w, h};
+                        }
+                    }
+                }
+            }
+        }
+
+        clearAxis(ctx, pixelWidth, pixelHeight) {
+            IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+        }
+
+        paintAxis(ctx, pixelWidth, pixelHeight) {
+            // dataRane is interpreted differently for interactino tracks -- all arcs are drawn from "zero", irrespective of dataRange.min
+            const axisRange = {min: 0, max: this.dataRange.max};
+            if (this.arcType === "proportional") {
+                this.painter.flipAxis = !this.arcOrientation;
+                this.painter.dataRange = axisRange;
+                this.painter.paintAxis(ctx, pixelWidth, pixelHeight);
+            } else if (this.arcType === "inView" || this.arcType === "partialInView") {
+                this.painter.flipAxis = !this.arcOrientation;
+                this.painter.dataRange = axisRange;
+                this.painter.paintAxis(ctx, pixelWidth, pixelHeight);
+            } else {
+                this.clearAxis(ctx, pixelWidth, pixelHeight);
+            }
+        }
+
+        menuItemList() {
+
+            let items = [];
+
+            if (this.hasValue) {
+                items.push("<hr/>");
+                const lut =
+                    {
+                        "nested": "Nested",
+                        "proportional": "Proportional - All",
+                        "inView": "Proportional - Both Ends in View",
+                        "partialInView": "Proportional - One End in View"
+                    };
+                items.push("<b>Arc Type</b>");
+                for (let arcType of ["nested", "proportional", "inView", "partialInView"]) {
+                    items.push(
+                        {
+                            object: $$1(createCheckbox(lut[arcType], arcType === this.arcType)),
+                            click: () => {
+                                this.arcType = arcType;
+                                this.trackView.repaintViews();
+                            }
+                        });
+                }
+            }
+            items.push("<hr/>");
+
+            items.push({
+                name: "Toggle arc direction",
+                click: () => {
+                    this.arcOrientation = !this.arcOrientation;
+                    this.trackView.repaintViews();
+                }
+            });
+            items.push({
+                name: this.showBlocks ? "Hide Blocks" : "Show Blocks",
+                click: () => {
+                    this.showBlocks = !this.showBlocks;
+                    this.trackView.repaintViews();
+                }
+            });
+
+
+            if (this.arcType === "proportional" || this.arcType === "inView" || this.arcType === "partialInView") {
+                // MenuUtils.numericDataMenuItems(this.trackView).forEach(item => items.push(item))
+                items = items.concat(MenuUtils.numericDataMenuItems(this.trackView));
+            }
+
+            if (this.browser.circularView) {
+                items.push('<hr/>');
+                items.push({
+                    label: 'Add interactions to circular view',
+                    click: () => {
+                        for (let viewport of this.trackView.viewports) {
+                            this.addChordsForViewport(viewport.referenceFrame);
+                        }
+                    }
+                });
+            }
+
+            return items
+        }
+
+        contextMenuItemList(clickState) {
+
+            // Experimental JBrowse feature
+            if (this.browser.circularView) {
+                const viewport = clickState.viewport;
+                const list = [];
+
+                list.push({
+                    label: 'Add interactions to circular view',
+                    click: () => {
+                        const refFrame = viewport.referenceFrame;
+                        // first pass: to get all the relevant features
+                        this.addChordsForViewport(refFrame);
+                    }
+                });
+
+                list.push('<hr/>');
+                return list
+            }
+        }
+
+        /**
+         * Add chords to the circular view for the given viewport, represented by its reference frame
+         * @param refFrame
+         */
+        addChordsForViewport(refFrame) {
+            const cachedFeatures = "all" === refFrame.chr ?
+                this.featureSource.getAllFeatures() :
+                this.featureSource.featureCache.queryFeatures(refFrame.chr, refFrame.start, refFrame.end);
+
+            // inView features are simply features that have been drawn, i.e. have a drawState
+            const inView = cachedFeatures.filter(f => f.drawState);
+            if (inView.length === 0) return;
+
+            const chords = makeBedPEChords(inView);
+            sendChords(chords, this, refFrame, 0.5);
+            //
+            //
+            // // for filtered set, distinguishing the chromosomes is more critical than tracks
+            // const chordSetColor = IGVColor.addAlpha("all" === refFrame.chr ? this.color : getChrColor(refFrame.chr), 0.5)
+            // const trackColor = IGVColor.addAlpha(this.color, 0.5)
+            //
+            // // name the chord set to include locus and filtering information
+            // const encodedName = this.name.replaceAll(' ', '%20')
+            // const chordSetName = "all" === refFrame.chr ?
+            //     encodedName :
+            //     `${encodedName} (${refFrame.chr}:${refFrame.start}-${refFrame.end} ; range:${this.dataRange.min}-${this.dataRange.max})`
+            // this.browser.circularView.addChords(chords, {track: chordSetName, color: chordSetColor, trackColor: trackColor})
+        }
+
+        doAutoscale(features) {
+
+            // if ("proportional" === this.arcType) {
+            let max = 0;
+            if (features) {
+                for (let f of features) {
+                    const v = this.valueColumn ? f[this.valueColumn] : f.score;
+                    if (!Number.isNaN(v)) {
+                        max = Math.max(max, v);
+                    }
+                }
+            }
+            return {min: 0, max: max}
+            // }
+        }
+
+        popupData(clickState, features) {
+
+            if (features === undefined) features = this.clickedFeatures(clickState);
+
+            const data = [];
+            for (let feature of features) {
+
+                const f = feature._ || feature;   // For "whole genome" features, which keeps a pointer to the original
+
+                data.push({name: "Region 1", value: positionString(f.chr1, f.start1, f.end1, f.strand1)});
+                data.push({name: "Region 2", value: positionString(f.chr2, f.start2, f.end2, f.strand2)});
+                if (f.name) {
+                    data.push({name: "Name", value: f.name});
+                }
+                if (f.value !== undefined) {
+                    data.push({name: "Value", value: f.value});
+                }
+                if (f.score !== undefined) {
+                    data.push({name: "Score", value: f.score});
+                }
+
+
+                if (f.extras && this.header && this.header.columnNames) {
+                    const columnNames = this.header.columnNames;
+                    const stdColumns = this.header.hiccups ? 6 : 10;
+                    for (let i = stdColumns; i < columnNames.length; i++) {
+                        if (this.header.colorColumn === i) continue;
+                        if (columnNames[i] === 'info') {
+                            extractInfoColumn(data, f.extras[i - stdColumns]);
+                        } else {
+                            data.push({name: columnNames[i], value: f.extras[i - stdColumns]});
+                        }
+                    }
+                }
+                // For now just return the top hit
+                break
+
+                //if (data.length > 0) {
+                //     data.push("<HR>");
+                // }
+            }
+            return data
+        }
+
+        clickedFeatures(clickState) {
+
+            // We use the cached features rather than method to avoid async load.  If the
+            // feature is not already loaded this won't work,  but the user wouldn't be mousing over it either.
+            const featureList = clickState.viewport.cachedFeatures;
+            const candidates = [];
+            if (featureList) {
+                const proportional = (this.arcType === "proportional" || this.arcType === "inView" || this.arcType === "partialInView");
+
+                for (let feature of featureList) {
+
+                    if (!feature.drawState) continue
+
+                    if (feature.chr1 === feature.chr2 || feature.chr === 'all') {
+                        if (proportional) {
+                            //(x-xc)^2/radiusX^2 + (y-yc)^2/radiusY^2 <= 1
+                            const {xc, yc, radiusX, radiusY} = feature.drawState;
+                            const dx = clickState.canvasX - xc;
+                            const dy = clickState.canvasY - yc;
+                            const score = (dx / radiusX) * (dx / radiusX) + (dy / radiusY) * (dy / radiusY);
+                            if (score <= 1) {
+                                candidates.push({score: 1 / score, feature});
+                            }
+                        } else {
+                            const {xc, yc, r} = feature.drawState;
+                            const dx = clickState.canvasX - xc;
+                            const dy = clickState.canvasY - yc;
+                            const score = Math.abs(Math.sqrt(dx * dx + dy * dy) - r);
+                            if (score < 5) {
+                                candidates.push({score, feature});
+                            }
+                        }
+                    } else {
+                        const {x, y, w, h} = feature.drawState;
+                        const tolerance = 5;
+                        if (clickState.canvasX >= x - tolerance && clickState.canvasX <= x + w + tolerance &&
+                            clickState.canvasY >= y && clickState.canvasY <= y + h) {
+                            const score = -Math.abs(clickState.canvasX - (x + w / 2));
+                            candidates.push({score, feature});
+                            break
+                        }
+                    }
+                }
+            }
+
+            if (candidates.length > 1) {
+                candidates.sort((a, b) => a.score - b.score);
+            }
+            return candidates.map((c) => c.feature)
+        }
+    }
+
+    function getMidpoints(feature, genome) {
+        let m1 = (feature.start1 + feature.end1) / 2;
+        let m2 = (feature.start2 + feature.end2) / 2;
+        if (feature.chr === 'all') {
+            m1 = genome.getGenomeCoordinate(feature.chr1, m1);
+            m2 = genome.getGenomeCoordinate(feature.chr2, m2);
+        }
+        if (m1 > m2) {
+            const tmp = m1;
+            m1 = m2;
+            m2 = tmp;
+        }
+        return {m1, m2}
+    }
+
+    function positionString(chr, start, end, strand) {
+
+        return strand && strand !== '.' ?
+            `${chr}:${numberFormatter$1(start + 1)}-${numberFormatter$1(end)} (${strand})` :
+            `${chr}:${numberFormatter$1(start + 1)}-${numberFormatter$1(end)}`
+    }
+
+    /**
+     * Estimate theta given the ratio of track height to 1/2 the feature width (coa).  This relationship is approximately linear.
+     */
+    function estimateTheta(x) {
+        let coa = [0.01570925532366355, 0.15838444032453644, 0.3249196962329063, 0.5095254494944288, 0.7265425280053609, 0.9999999999999999];
+        let theta = [0.031415926535897934, 0.3141592653589793, 0.6283185307179586, 0.9424777960769379, 1.2566370614359172, 1.5707963267948966];
+        let idx;
+
+        for (idx = 0; idx < coa.length; idx++) {
+            if (coa[idx] > x) {
+                break
+            }
+        }
+
+        let left = idx === 0 ? 0 : coa[idx - 1];
+        let right = idx < coa.length ? coa[idx] : 1;
+        let r = (x - left) / (right - left);
+
+        let thetaLeft = idx === 0 ? 0 : theta[idx - 1];
+        let thetaRight = idx < theta.length ? theta[idx] : Math.PI / 2;
+
+        return Math.min(Math.PI/2,  (thetaLeft + r * (thetaRight - thetaLeft)))
+
+    }
+
+    const colorAlphaCache = new Map();
+
+    function getAlphaColor(color, alpha) {
+        const key = `${color}_${alpha}`;
+        let c = colorAlphaCache.get(key);
+        if (!c) {
+            c = IGVColor.addAlpha(color, alpha);
+            colorAlphaCache.set(key, c);
+        }
+        return c
+    }
+
+
+    /**
+     * Called in the context of FeatureSource  (i.e. this == the feature source (a TextFeatureSource) for the track
+     *
+     * @param allFeatures
+     * @returns {[]}
+     */
+    function getWGFeatures(allFeatures) {
+
+        const makeWGFeature = (f) => {
+            const wg = Object.assign({}, f);
+            wg.chr = "all";
+            wg.start = genome.getGenomeCoordinate(f.chr1, f.start1);
+            wg.end = genome.getGenomeCoordinate(f.chr2, f.end2);
+            return wg
+        };
+
+        const genome = this.genome;
+
+        // First pass -- find the max score feature
+        let maxScoreFeature;
+        let totalFeatureCount = 0;
+        for (let c of genome.wgChromosomeNames) {
+            let chrFeatures = allFeatures[c];
+            if (chrFeatures) {
+                for (let f of chrFeatures) {
+                    if (!f.dup) {
+                        totalFeatureCount++;
+                        if (f.score && (!maxScoreFeature || f.score > maxScoreFeature.score)) {
+                            maxScoreFeature = f;
+                        }
+                    }
+                }
+            }
+        }
+
+        const maxCount = this.maxWGCount;
+        const nBins = maxScoreFeature && maxScoreFeature.score > 0 && totalFeatureCount > maxCount ? 5 : 1;   // TODO make a function of total # of features & maxCount?
+        const featuresPerBin = Math.floor(maxCount / nBins);
+        const binSize = maxScoreFeature && maxScoreFeature.score > 0 ? Math.log(maxScoreFeature.score) / nBins : Number.MAX_SAFE_INTEGER;
+
+        let binnedFeatures = [];
+        let counts = [];
+        for (let i = 0; i < nBins; i++) {
+            counts.push([0]);
+            binnedFeatures.push([]);
+        }
+
+        for (let c of genome.wgChromosomeNames) {
+            let chrFeatures = allFeatures[c];
+            if (chrFeatures) {
+                for (let f of chrFeatures) {
+                    if (!f.dup) {
+                        const bin = f.score  ? Math.max(0, Math.min(nBins - 1, Math.floor(Math.log(f.score) / binSize))) : 0;
+                        if (binnedFeatures[bin].length < featuresPerBin) {
+                            binnedFeatures[bin].push(makeWGFeature(f));
+                        } else {
+                            //Reservoir sampling
+                            const samplingProb = featuresPerBin / (counts[bin] + 1);
+                            if (Math.random() < samplingProb) {
+                                const idx = Math.floor(Math.random() * (featuresPerBin - 1));
+                                binnedFeatures[bin][idx] = makeWGFeature(f);
+                            }
+                        }
+                        counts[bin]++;
+                    }
+                }
+            }
+        }
+
+        let wgFeatures;
+        if (nBins === 1) {
+            wgFeatures = binnedFeatures[0];
+        } else {
+            wgFeatures = [];
+            for (let bf of binnedFeatures) {
+                for (let f of bf) wgFeatures.push(f);
+            }
+            // Keep the feature with max score
+            if (maxScoreFeature) {
+                wgFeatures.push(makeWGFeature(maxScoreFeature));
+            }
+            wgFeatures.sort(function (a, b) {
+                return a.start - b.start
+            });
+            console.log(wgFeatures.length);
+        }
+
+
+        return wgFeatures
+    }
+
+    /**
+     * Extract a gff style info column for popup text.  This convention used by 10X for bedpe files
+     *     ALLELIC_FRAC=0.0375670840787;BLACK1=.;BLACK2=.;...
+     * @param data
+     * @param str
+     */
+    function extractInfoColumn(data, str) {
+        const kvs = str.split(';');
+        for (let t of kvs) {
+            const kv = t.split('=');
+            if (kv.length === 2) {
+                data.push({name: kv[0], value: kv[1]});
+            }
+        }
+
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016 University of California San Diego
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const isString = isString$2;
+
+    const DEFAULT_COLOR = "rgb(0,0,150)";
+    const DEFAULT_VISIBILITY_WINDOW = 1000000;
+    const TOP_MARGIN = 10;
+    const STANDARD_FIELDS = new Map([["REF", "referenceBases"], ["ALT", "alternateBases"], ["QUAL", "quality"], ["FILTER", "filter"]]);
+
+
+    class VariantTrack extends TrackBase {
+
+        static defaults = {
+            displayMode: "EXPANDED",
+            sortDirection: "ASC",
+            showGenotypes: true,
+            squishedVariantHeight: 2,
+            squishedCallHeight: 1,
+            expandedCallHeight: 10,
+            expandedVGap: 2,
+            squishedVGap: 1,
+            expandedGroupGap: 10,
+            squishedGroupGap: 5,
+            featureHeight: 14,
+            noGenotypeColor: "rgb(200,180,180)",
+            noCallColor: "rgb(225, 225, 225)",
+            nonRefColor: "rgb(200, 200, 215)",
+            mixedColor: "rgb(200, 220, 200)",
+            homrefColor: "rgb(200, 200, 200)",
+            homvarColor: "rgb(17,248,254)",
+            hetvarColor: "rgb(34,12,253)",
+            colorBy: undefined,
+            visibilityWindow: undefined,
+            labelDisplayMode: undefined,
+            type: "variant"
+        }
+
+        constructor(config, browser) {
+            super(config, browser);
+        }
+
+        init(config) {
+
+            super.init(config);
+
+            this.expandedVariantHeight = config.expandedVariantHeight || config.variantHeight || 10;
+
+            this.featureSource = FeatureSource(config, this.browser.genome);
+
+            this._initColorBy = config.colorBy;
+            if (config.colorTable) {
+                this.colorTables = new Map();
+                this.colorTables.set(config.colorBy, new ColorTable(config.colorTable));
+            }
+            this._color = config.color;
+            this._strokecolor = config.strokecolor;
+            this._context_hook = config.context_hook;
+
+
+            // The number of variant rows are computed dynamically, but start with "1" by default
+            this.variantRowCount(1);
+
+        }
+
+        async postInit() {
+
+            this.header = await this.getHeader();   // cricital, don't remove'
+            if (this.disposed) return   // This track was removed during async load
+            if (undefined === this.visibilityWindow && this.config.indexed !== false) {
+                const fn = isFile(this.config.url) ? this.config.url.name : this.config.url;
+                if (isString(fn) && fn.toLowerCase().includes("gnomad")) {
+                    this.visibilityWindow = 1000;  // these are known to be very dense
+                } else if (typeof this.featureSource.defaultVisibilityWindow === 'function') {
+                    this.visibilityWindow = await this.featureSource.defaultVisibilityWindow();
+                } else {
+                    this.visibilityWindow = DEFAULT_VISIBILITY_WINDOW;
+                }
+            }
+            return this
+
+        }
+
+        get supportsWholeGenome() {
+            return this.config.indexed === false || this.config.supportsWholeGenome === true
+        }
+
+        get color() {
+            return this._color || DEFAULT_COLOR
+        }
+
+        set color(c) {
+            this._color = c;
+            this.colorBy = undefined;
+        }
+
+        async getHeader() {
+
+            if (!this.header) {
+                if (typeof this.featureSource.getHeader === "function") {
+                    const header = await this.featureSource.getHeader();
+                    if (header) {
+                        this.callSets = header.callSets || [];
+                    }
+                    this.header = header;
+                }
+                this.sampleNames = this.callSets ? this.callSets.map(cs => cs.name) : [];
+            }
+
+            return this.header
+        }
+
+        getCallsetsLength() {
+            return this.callSets ? this.callSets.length : 0
+        }
+
+        async getFeatures(chr, start, end, bpPerPixel) {
+
+            if (this.header === undefined) {
+                this.header = await this.getHeader();
+            }
+            return this.featureSource.getFeatures({chr, start, end, bpPerPixel, visibilityWindow: this.visibilityWindow})
+        }
+
+        hasSamples() {
+            return this.getCallsetsLength() > 0
+        }
+
+        getSamples() {
+            return {
+                yOffset: this.sampleYOffset,
+                names: this.sampleNames,
+                height: this.sampleHeight
+            }
+        }
+
+        /**
+         * The required height in pixels required for the track content.   This is not the visible track height, which
+         * can be smaller (with a scrollbar) or larger.
+         *
+         * @param features
+         * @returns {*}
+         */
+        computePixelHeight(features) {
+
+            if (!features || features.length == 0) return TOP_MARGIN
+
+            const nVariantRows = (this.displayMode === "COLLAPSED") ? 1 : this.nVariantRows;
+            const vGap = (this.displayMode === "SQUISHED") ? this.squishedVGap : this.expandedVGap;
+            const variantHeight = (this.displayMode === "SQUISHED") ? this.squishedVariantHeight : this.expandedVariantHeight;
+            const callHeight = (this.displayMode === "SQUISHED") ? this.squishedCallHeight : this.expandedCallHeight;
+            const nCalls = this.showGenotypes === false ? 0 : this.getCallsetsLength() * nVariantRows;
+            const h = TOP_MARGIN + nVariantRows * (variantHeight + vGap);
+            return h + vGap + (nCalls + 1) * (callHeight + vGap)
+
+        }
+
+        variantRowCount(count) {
+            this.nVariantRows = count;
+        }
+
+        draw({context, pixelWidth, pixelHeight, bpPerPixel, bpStart, pixelTop, features}) {
+
+            IGVGraphics.fillRect(context, 0, pixelTop, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+
+            const vGap = ("SQUISHED" === this.displayMode) ? this.squishedVGap : this.expandedVGap;
+            const rowCount = ("COLLAPSED" === this.displayMode) ? 1 : this.nVariantRows;
+            const variantHeight = ("SQUISHED" === this.displayMode) ? this.squishedVariantHeight : this.expandedVariantHeight;
+            this.variantBandHeight = TOP_MARGIN + rowCount * (variantHeight + vGap);
+
+            let callSets = this.callSets;
+            if (!callSets && this._f) {
+                callSets = this._f.callSets;   // "Complementary" variant for structural variants
+            }
+            const nCalls = this.getCallsetsLength();
+            if (callSets && nCalls > 0 && this.showGenotypes !== false) {
+                IGVGraphics.strokeLine(context, 0, this.variantBandHeight, pixelWidth, this.variantBandHeight, {strokeStyle: 'rgb(224,224,224) '});
+            }
+
+            if (features) {
+
+                const callHeight = ("SQUISHED" === this.displayMode) ? this.squishedCallHeight : this.expandedCallHeight;
+                const vGap = ("SQUISHED" === this.displayMode) ? this.squishedVGap : this.expandedVGap;
+                const bpEnd = bpStart + pixelWidth * bpPerPixel + 1;
+
+                // Loop through variants.  A variant == a row in a VCF file
+                for (let variant of features) {
+
+                    if (variant.end < bpStart) continue
+                    if (variant.start > bpEnd) break
+
+                    const variantHeight = ("SQUISHED" === this.displayMode) ? this.squishedVariantHeight : this.expandedVariantHeight;
+                    const y = TOP_MARGIN + ("COLLAPSED" === this.displayMode ? 0 : variant.row * (variantHeight + vGap));
+                    const h = variantHeight;
+
+                    // Compute pixel width.   Minimum width is 3 pixels,  if > 5 pixels create gap between variants
+                    let x = Math.round((variant.start - bpStart) / bpPerPixel);
+                    let x1 = Math.round((variant.end - bpStart) / bpPerPixel);
+                    let w = Math.max(1, x1 - x);
+                    if (w < 3) {
+                        w = 3;
+                        x -= 1;
+                    } else if (w > 5) {
+                        x += 1;
+                        w -= 2;
+                    }
+                    context.fillStyle = this.getColorForFeature(variant);
+                    context.fillRect(x, y, w, h);
+
+                    //only paint stroke if a color is defined
+                    let strokecolor = this.getVariantStrokecolor(variant);
+                    if (strokecolor) {
+                        context.strokeStyle = strokecolor;
+                        context.strokeRect(x, y, w, h);
+                    }
+
+                    // call hook if _context_hook fn is defined
+                    this.callContextHook(variant, context, x, y, w, h);
+
+                    variant.pixelRect = {x, y, w, h};
+
+                    // Loop though the calls for this variant.  There will potentially be a call for each sample.
+                    if (nCalls > 0 && this.showGenotypes !== false) {
+
+                        const nVariantRows = "COLLAPSED" === this.displayMode ? 1 : this.nVariantRows;
+                        this.sampleYOffset = this.variantBandHeight + vGap;
+                        this.sampleHeight = nVariantRows * (callHeight + vGap);  // For each sample, there is a call for each variant at this position
+
+                        let sampleNumber = 0;
+                        if (callSets && variant.calls) {
+                            for (let callSet of callSets) {
+                                const call = variant.calls[callSet.id];
+                                if (call) {
+                                    const row = "COLLAPSED" === this.displayMode ? 0 : variant.row;
+                                    const py = this.sampleYOffset + sampleNumber * this.sampleHeight + row * (callHeight + vGap);
+                                    let allVar = true;  // until proven otherwise
+                                    let allRef = true;
+                                    let noCall = false;
+
+                                    if (call.genotype) {
+                                        for (let g of call.genotype) {
+                                            if ('.' === g) {
+                                                noCall = true;
+                                                break
+                                            } else {
+                                                if (g !== 0) allRef = false;
+                                                if (g === 0) allVar = false;
+                                            }
+                                        }
+                                    }
+
+                                    if (!call.genotype) {
+                                        context.fillStyle = this.noGenotypeColor;
+                                    } else if (noCall) {
+                                        context.fillStyle = this.noCallColor;
+                                    } else if (allRef) {
+                                        context.fillStyle = this.homrefColor;
+                                    } else if (allVar) {
+                                        context.fillStyle = this.homvarColor;
+                                    } else {
+                                        context.fillStyle = this.hetvarColor;
+                                    }
+
+                                    context.fillRect(x, py, w, callHeight);
+
+                                    callSet.pixelRect = {x, y: py, w, h: callHeight};
+                                }
+                                sampleNumber++;
+                            }
+                        }
+                    }
+                }
+
+            } else {
+                console.log("No feature list");
+            }
+        };
+
+
+        getColorForFeature(variant) {
+
+            const v = variant._f || variant;
+            let variantColor;
+
+            if (this.colorBy) {
+                const colorBy = this.colorBy;
+                let value;
+                if (v.info.hasOwnProperty(colorBy)) {
+                    value = v.info[colorBy];
+                } else if (STANDARD_FIELDS.has(colorBy)) {
+                    const key = STANDARD_FIELDS.get(colorBy);
+                    value = v[key];
+                }
+                variantColor = this.getVariantColorTable(colorBy).getColor(value);
+                if (!variantColor) {
+                    variantColor = "gray";
+                }
+
+            } else if (this._color) {
+                variantColor = (typeof this._color === "function") ? this._color(variant) : this._color;
+            } else if ("NONVARIANT" === v.type) {
+                variantColor = this.nonRefColor;
+            } else if ("MIXED" === v.type) {
+                variantColor = this.mixedColor;
+            } else {
+                variantColor = this.color;
+            }
+            return variantColor
+        }
+
+
+        getVariantStrokecolor(variant) {
+
+            const v = variant._f || variant;
+            let variantStrokeColor;
+
+            if (this._strokecolor) {
+                variantStrokeColor = (typeof this._strokecolor === "function") ? this._strokecolor(v) : this._strokecolor;
+            } else {
+                variantStrokeColor = undefined;
+            }
+            return variantStrokeColor
+        }
+
+        callContextHook(variant, context, x, y, w, h) {
+            if (this._context_hook) {
+                if (typeof this._context_hook === "function") {
+                    const v = variant._f || variant;
+
+                    context.save();
+                    this._context_hook(v, context, x, y, w, h);
+                    context.restore();
+                }
+            }
+        }
+
+        clickedFeatures(clickState) {
+
+            let featureList = super.clickedFeatures(clickState);
+
+            const vGap = (this.displayMode === 'EXPANDED') ? this.expandedVGap : this.squishedVGap;
+            const callHeight = vGap + ("SQUISHED" === this.displayMode ? this.squishedCallHeight : this.expandedCallHeight);
+            // Find the variant row (i.e. row assigned during feature packing)
+            const yOffset = clickState.y;
+            if (yOffset <= this.variantBandHeight) {
+                // Variant
+                const variantHeight = ("SQUISHED" === this.displayMode) ? this.squishedVariantHeight : this.expandedVariantHeight;
+                const variantRow = Math.floor((yOffset - TOP_MARGIN) / (variantHeight + vGap));
+                if ("COLLAPSED" !== this.displayMode) {
+                    featureList = featureList.filter(f => f.row === variantRow);
+                }
+            } else if (this.callSets) {
+                const callSets = this.callSets;
+                const sampleY = yOffset - this.variantBandHeight;
+                const sampleRow = Math.floor(sampleY / this.sampleHeight);
+                if (sampleRow >= 0 && sampleRow < callSets.length) {
+                    const variantRow = Math.floor((sampleY - sampleRow * this.sampleHeight) / callHeight);
+                    const variants = "COLLAPSED" === this.displayMode ? featureList : featureList.filter(f => f.row === variantRow);
+                    const cs = callSets[sampleRow];
+                    featureList = variants.map(v => {
+                        const call = v.calls[cs.id];
+                        expandGenotype(call, v);
+                        return call
+                    });
+                }
+            }
+
+            return featureList
+        }
+
+
+        /**
+         * Return "popup data" for feature @ genomic location.  Data is an array of key-value pairs
+         */
+        popupData(clickState, featureList) {
+
+            if (featureList === undefined) featureList = this.clickedFeatures(clickState);
+            const genomicLocation = clickState.genomicLocation;
+            const genomeID = this.browser.genome.id;
+            const sampleInformation = this.browser.sampleInformation;
+
+            let popupData = [];
+            for (let v of featureList) {
+
+                const f = v._f || v;    // Get real variant from psuedo-variant, e.g. whole genome or SV mate
+
+                if (popupData.length > 0) {
+                    popupData.push({html: '<hr style="border-top-width:2px ;border-color: #c9c3ba" />'});
+                }
+
+                if (typeof f.popupData === 'function') {
+                    const v = f.popupData(genomicLocation, genomeID);
+                    Array.prototype.push.apply(popupData, v);
+                } else {
+                    // Assume this is a call (genotype)
+                    const call = f;
+
+                    if (call.callSetName !== undefined) {
+                        popupData.push({name: 'Name', value: call.callSetName});
+                    }
+
+                    if (call.genotypeName) {
+                        popupData.push({name: 'Genotype', value: call.genotypeName});
+                    }
+
+                    if (call.phaseset !== undefined) {
+                        popupData.push({name: 'Phase set', value: call.phaseset});
+                    }
+                    if (call.genotypeLikelihood !== undefined) {
+                        popupData.push({name: 'genotypeLikelihood', value: call.genotypeLikelihood.toString()});
+                    }
+
+                    if (sampleInformation) {
+                        var attr = sampleInformation.getAttributes(call.callSetName);
+                        if (attr) {
+                            Object.keys(attr).forEach(function (attrName) {
+                                var displayText = attrName.replace(/([A-Z])/g, " $1");
+                                displayText = displayText.charAt(0).toUpperCase() + displayText.slice(1);
+                                popupData.push({name: displayText, value: attr[attrName]});
+                            });
+                        }
+                    }
+
+                    var infoKeys = Object.keys(call.info);
+                    if (infoKeys.length) {
+                        popupData.push('<hr/>');
+                    }
+                    infoKeys.forEach(function (key) {
+                        popupData.push({name: key, value: decodeURIComponent(call.info[key])});
+                    });
+                }
+            }
+            return popupData
+
+        }
+
+
+    // VariantTrack.prototype.contextMenuItemList = function (clickState) {
+    //
+    //     const self = this;
+    //     const menuItems = [];
+    //
+    //     const featureList = this.clickedFeatures(clickState);
+    //
+    //     if (this.callSets && featureList && featureList.length > 0) {
+    //
+    //         featureList.forEach(function (variant) {
+    //
+    //             if ('str' === variant.type) {
+    //
+    //                 menuItems.push({
+    //                     label: 'Sort by allele length',
+    //                     click: function () {
+    //                         sortCallSetsByAlleleLength(self.callSets, variant, self.sortDirection);
+    //                         self.sortDirection = (self.sortDirection === "ASC") ? "DESC" : "ASC";
+    //                         self.trackView.repaintViews();
+    //                     }
+    //                 });
+    //
+    //             }
+    //
+    //         });
+    //     }
+    //
+    //
+    //     function sortCallSetsByAlleleLength(callSets, variant, direction) {
+    //         var d = (direction === "DESC") ? 1 : -1;
+    //         Object.keys(callSets).forEach(function (property) {
+    //             callSets[property].sort(function (a, b) {
+    //                 var aNan = isNaN(variant.calls[a.id].genotype[0]);
+    //                 var bNan = isNaN(variant.calls[b.id].genotype[0]);
+    //                 if (aNan && bNan) {
+    //                     return 0;
+    //                 } else if (aNan) {
+    //                     return 1;
+    //                 } else if (bNan) {
+    //                     return -1;
+    //                 } else {
+    //                     var a0 = getAlleleString(variant.calls[a.id], variant, 0);
+    //                     var a1 = getAlleleString(variant.calls[a.id], variant, 1);
+    //                     var b0 = getAlleleString(variant.calls[b.id], variant, 0);
+    //                     var b1 = getAlleleString(variant.calls[b.id], variant, 1);
+    //                     var result = Math.max(b0.length, b1.length) - Math.max(a0.length, a1.length);
+    //                     if (result === 0) {
+    //                         result = Math.min(b0.length, b1.length) - Math.min(a0.length, a1.length);
+    //                     }
+    //                     return d * result;
+    //                 }
+    //             });
+    //         });
+    //     }
+    //
+    //
+    //     return menuItems;
+    //
+    // };
+
+        menuItemList() {
+
+            const menuItems = [];
+
+            // color-by INFO attribute
+            if (this.header.INFO) {
+                //Code below will present checkboxes for all info fields of type "String".   Wait until this is requested
+                //const stringInfoKeys = Object.keys(this.header.INFO).filter(key => "String" === this.header.INFO[key].Type);
+
+                // For now stick to explicit info fields (well, exactly 1 for starters)
+                if (this.header.INFO) {
+                    //const stringInfoKeys = Object.keys(this.header.INFO).filter(key => this.header.INFO[key].Type === "String")
+                    const stringInfoKeys = this.header.INFO.SVTYPE ? ['SVTYPE'] : [];
+                    if (this._initColorBy && this._initColorBy !== 'SVTYPE') {
+                        stringInfoKeys.push(this._initColorBy);
+                    }
+                    if (stringInfoKeys.length > 0) {
+                        menuItems.push('<hr/>');
+                        const $e = $$1('<div class="igv-track-menu-category igv-track-menu-border-top">');
+                        $e.text('Color by:');
+                        menuItems.push({name: undefined, object: $e, click: undefined, init: undefined});
+                        stringInfoKeys.sort();
+                        for (let item of stringInfoKeys) {
+                            const selected = (this.colorBy === item);
+                            const label = item ? item : 'None';
+                            menuItems.push(this.colorByCB({key: item, label: label}, selected));
+                        }
+                        menuItems.push(this.colorByCB({key: undefined, label: 'None'}, this.colorBy === undefined));
+                        menuItems.push('<hr/>');
+                    }
+                }
+            }
+
+            if (this.getCallsetsLength() > 0) {
+                menuItems.push({object: $$1('<div class="igv-track-menu-border-top">')});
+                menuItems.push({
+                    object: $$1(createCheckbox("Show Genotypes", this.showGenotypes)),
+                    click: () => {
+                        this.showGenotypes = !this.showGenotypes;
+                        //adjustTrackHeight();
+                        this.trackView.checkContentHeight();
+                        this.trackView.repaintViews();
+                    }
+                });
+            }
+
+            menuItems.push({object: $$1('<div class="igv-track-menu-border-top">')});
+            for (let displayMode of ["COLLAPSED", "SQUISHED", "EXPANDED"]) {
+                var lut =
+                    {
+                        "COLLAPSED": "Collapse",
+                        "SQUISHED": "Squish",
+                        "EXPANDED": "Expand"
+                    };
+
+                menuItems.push(
+                    {
+                        object: $$1(createCheckbox(lut[displayMode], displayMode === this.displayMode)),
+                        click: () => {
+                            this.displayMode = displayMode;
+                            this.trackView.checkContentHeight();
+                            this.trackView.repaintViews();
+                        }
+                    });
+            }
+
+            // Experimental JBrowse circular view integration
+            if (this.browser.circularView) {
+
+                menuItems.push('<hr>');
+                menuItems.push({
+                    label: 'Add SVs to circular view',
+                    click: () => {
+                        for (let viewport of this.trackView.viewports) {
+                            this.sendChordsForViewport(viewport);
+                        }
+                    }
+                });
+            }
+
+            return menuItems
+        }
+
+
+        contextMenuItemList(clickState) {
+
+            // Experimental JBrowse circular view integration
+            if (this.browser.circularView) {
+                const viewport = clickState.viewport;
+                const list = [];
+
+                list.push({
+                    label: 'Add SVs to Circular View',
+                    click: () => {
+                        this.sendChordsForViewport(viewport);
+                    }
+                });
+
+                list.push('<hr/>');
+                return list
+            }
+        }
+
+
+        sendChordsForViewport(viewport) {
+            const refFrame = viewport.referenceFrame;
+            let inView;
+            if ("all" === refFrame.chr) {
+                const all = this.featureSource.getAllFeatures();
+                const arrays = Object.keys(all).map(k => all[k]);
+                inView = [].concat(...arrays);
+            } else {
+                inView = this.featureSource.featureCache.queryFeatures(refFrame.chr, refFrame.start, refFrame.end);
+
+            }
+
+            const chords = makeVCFChords(inView);
+            sendChords(chords, this, refFrame, 0.5);
+        }
+
+        /**
+         * Create a "color by" checkbox menu item, optionally initially checked
+         * @param menuItem
+         * @param showCheck
+         * @returns {{init: undefined, name: undefined, click: clickHandler, object: (jQuery|HTMLElement|jQuery.fn.init)}}
+         */
+        colorByCB(menuItem, showCheck) {
+
+            const $e = $$1(createCheckbox(menuItem.label, showCheck));
+            const clickHandler = () => {
+
+                if (menuItem.key === this.colorBy) {
+                    this.colorBy = undefined;
+                    delete this.config.colorBy;
+                    this.trackView.repaintViews();
+                } else {
+                    this.colorBy = menuItem.key;
+                    this.config.colorBy = menuItem.key;
+                    this.trackView.repaintViews();
+                }
+
+            };
+
+            return {name: undefined, object: $e, click: clickHandler, init: undefined}
+        }
+
+        getState() {
+
+            const config = super.getState();
+            if (this._color && typeof this._color !== "function") {
+                config.color = this._color;
+            }
+            return config
+
+        }
+
+        getVariantColorTable(key) {
+
+            if (!this.colorTables) {
+                this.colorTables = new Map();
+            }
+
+            if (!this.colorTables.has(key)) {
+                let tbl;
+                switch (key) {
+                    case "SVTYPE" :
+                        tbl = SV_COLOR_TABLE;
+                        break
+                    default:
+                        tbl = new PaletteColorTable("Set1");
+                }
+                this.colorTables.set(key, tbl);
+            }
+            return this.colorTables.get(key)
+        }
+    }
+
+
+    function expandGenotype(call, variant) {
+
+        if (call.genotype) {
+            let gt = '';
+            if (variant.alternateBases === ".") {
+                gt = "No Call";
+            } else {
+                const altArray = variant.alternateBases.split(",");
+                for (let allele of call.genotype) {
+                    if (gt.length > 0) {
+                        gt += "|";
+                    }
+                    if ('.' === allele) {
+                        gt += '.';
+                    } else if (allele === 0) {
+                        gt += variant.referenceBases;
+                    } else {
+                        let alt = altArray[allele - 1].replace("<", "&lt;");
+                        gt += alt;
+                    }
+                }
+            }
+            call.genotypeName = gt;
+        }
+    }
+
+
+    const SV_COLOR_TABLE = new ColorTable({
+        'DEL': '#ff2101',
+        'INS': '#001888',
+        'DUP': '#028401',
+        'INV': '#008688',
+        'CNV': '#8931ff',
+        'BND': '#891100',
+        '*': '#002eff'
+    });
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class EqtlTrack extends TrackBase {
+
+        constructor(config, browser) {
+
+            super(config, browser);
+        }
+
+        init(config) {
+            super.init(config);
+
+            this.name = config.name;
+            this.pValueField = config.pValueField || "pValue";
+            this.geneField = config.geneField || "geneSymbol";
+            this.snpField = config.snpField || "snp";
+
+            const min = config.minLogP || config.min;
+            const max = config.maxLogP || config.max;
+            this.dataRange = {
+                min: min || 3.5,
+                max: max || 25
+            };
+            if (!max) {
+                this.autoscale = true;
+            } else {
+                this.autoscale = config.autoscale;
+            }
+            this.autoscalePercentile = (config.autoscalePercentile === undefined ? 98 : config.autoscalePercentile);
+
+
+            this.background = config.background;    // No default
+            this.divider = config.divider || "rgb(225,225,225)";
+            this.dotSize = config.dotSize || 2;
+            this.height = config.height || 100;
+            this.autoHeight = false;
+            this.disableButtons = config.disableButtons;
+
+            // Limit visibility window to 2 mb,  gtex server gets flaky beyond that
+            this.visibilityWindow = config.visibilityWindow === undefined ?
+                2000000 : config.visibilityWindow >= 0 ? Math.min(2000000, config.visibilityWindow) : 2000000;
+
+            this.featureSource = FeatureSource(config, this.browser.genome);
+
+            GtexUtils.gtexLoaded = true;
+        }
+
+        paintAxis(ctx, pixelWidth, pixelHeight) {
+
+            const yScale = (this.dataRange.max - this.dataRange.min) / pixelHeight;
+
+            const font = {
+                'font': 'normal 10px Arial',
+                'textAlign': 'right',
+                'strokeStyle': "black"
+            };
+
+            IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+
+            // Determine a tick spacing such that there is at least 10 pixels between ticks
+
+            const n = Math.ceil((this.dataRange.max - this.dataRange.min) * 10 / pixelHeight);
+
+            for (let p = 4; p <= this.dataRange.max; p += n) {
+
+                // TODO: Dashes may not actually line up with correct scale. Ask Jim about this
+
+                const ref = 0.85 * pixelWidth;
+                const x1 = ref - 5;
+                const x2 = ref;
+                const y = pixelHeight - (p - this.dataRange.min) / yScale;
+
+                IGVGraphics.strokeLine(ctx, x1, y, x2, y, font); // Offset dashes up by 2 pixel
+
+                if (y > 8) {
+                    IGVGraphics.fillText(ctx, p, x1 - 1, y + 2, font);
+                } // Offset numbers down by 2 pixels;
+            }
+
+            font['textAlign'] = 'center';
+
+            IGVGraphics.fillText(ctx, "-log10(pvalue)", pixelWidth / 4, pixelHeight / 2, font, {rotate: {angle: -90}});
+
+        };
+
+        async getFeatures(chr, start, end) {
+
+            const pValueField = this.pValueField;
+            const visibilityWindow = this.visibilityWindow;
+            const features = await this.featureSource.getFeatures({chr, start, end, visibilityWindow});
+            features.forEach(function (f) {
+                f.value = f[pValueField];
+            });
+            return features
+        }
+
+        draw(options) {
+
+            const ctx = options.context;
+
+            const pixelWidth = options.pixelWidth;
+            const pixelHeight = options.pixelHeight;
+
+            if (this.background) {
+                IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': this.background});
+            }
+            IGVGraphics.strokeLine(ctx, 0, pixelHeight - 1, pixelWidth, pixelHeight - 1, {'strokeStyle': this.divider});
+
+            const drawEqtls = (drawSelected) => {
+
+                const radius = drawSelected ? 2 * this.dotSize : this.dotSize;
+                const bpStart = options.bpStart;
+                const yScale = (this.dataRange.max - this.dataRange.min) / pixelHeight;
+                const selection = options.referenceFrame.selection;
+
+                for (let eqtl of options.features) {
+
+                    const px = (eqtl.start - bpStart + 0.5) / options.bpPerPixel;
+                    if (px < 0) continue
+                    else if (px > pixelWidth) break
+
+                    const snp = eqtl.snp.toUpperCase();
+                    const geneName = eqtl[this.geneField].toUpperCase();
+
+                    const isSelected = selection &&
+                        (selection.snp === snp || selection.gene === geneName);
+
+                    if (!drawSelected || isSelected) {
+
+                        // Add eqtl's gene to the selection if this is the selected snp.
+                        // TODO -- this should not be done here in the rendering code.
+                        if (selection && selection.snp === snp) {
+                            selection.addGene(geneName);
+                        }
+
+                        var mLogP = -Math.log(eqtl[this.pValueField]) / Math.LN10;
+                        if (mLogP >= this.dataRange.min) {
+                            let capped;
+                            if (mLogP > this.dataRange.max) {
+                                mLogP = this.dataRange.max;
+                                capped = true;
+                            } else {
+                                capped = false;
+
+                            }
+
+                            const py = Math.max(0 + radius, pixelHeight - Math.round((mLogP - this.dataRange.min) / yScale));
+                            eqtl.px = px;
+                            eqtl.py = py;
+                            eqtl.radius = radius;
+
+                            let color;
+                            if (drawSelected && selection) {
+                                color = selection.colorForGene(geneName);
+                                IGVGraphics.setProperties(ctx, {fillStyle: color, strokeStyle: "black"});
+                            } else {
+                                color = capped ? "rgb(150, 150, 150)" : "rgb(180, 180, 180)";
+                                IGVGraphics.setProperties(ctx, {fillStyle: color, strokeStyle: color});
+                            }
+
+                            IGVGraphics.fillCircle(ctx, px, py, radius);
+                            IGVGraphics.strokeCircle(ctx, px, py, radius);
+                        }
+                    }
+                }
+            };
+
+            // Draw in two passes, with "selected" eqtls drawn last
+            drawEqtls(false);
+            drawEqtls(true);
+
+        }
+
+        /**
+         * Return "popup data" for feature @ genomic location.  Data is an array of key-value pairs
+         */
+        popupData(clickState, features) {
+
+            if(features === undefined) features = clickState.viewport.cachedFeatures;
+            if (!features || features.length === 0) return []
+
+            const tolerance = 3;
+            const tissue = this.name;
+            const popupData = [];
+
+            for (let feature of features) {
+                // Hit test --use square vs circle for efficiency (no sqrt)
+                if (Math.abs(feature.px - clickState.canvasX) < (feature.radius + tolerance) &&
+                    Math.abs(feature.py - clickState.canvasY) < (feature.radius + tolerance)) {
+
+                    if (popupData.length > 0) {
+                        popupData.push('<hr/>');
+                    }
+                    popupData.push(
+                        {name: "snp id", value: feature.snp},
+                        {name: "gene id", value: feature.geneId},
+                        {name: "gene name", value: feature.geneName},
+                        {name: "p value", value: feature.pValue},
+                        {name: "tissue", value: tissue});
+
+                }
+            }
+
+            return popupData
+        }
+
+        menuItemList() {
+            return MenuUtils.numericDataMenuItems(this.trackView)
+        }
+
+        doAutoscale(featureList) {
+
+            if (featureList.length > 0) {
+
+                var values = featureList
+                    .map(function (eqtl) {
+                        return -Math.log(eqtl.value) / Math.LN10
+                    });
+
+                this.dataRange.max = IGVMath.percentile(values, this.autoscalePercentile);
+            } else {
+                // No features -- default
+                const max = this.config.maxLogP || this.config.max;
+                this.dataRange.max = max || 25;
+            }
+
+            return this.dataRange
+        }
+
+    }
+
+    /**
+     * Colors used for coding omosomes
+     */
+
+    const GWASColors = {
+        "X": "rgb(204, 153, 0)",
+        "Y": "rgb(153, 204, 0)",
+        "Un": "darkGray)",
+        "1": "rgb(80, 80, 255)",
+        "2": "rgb(206, 61, 50)",
+        "2a": "rgb(210, 65, 55)",
+        "2b": "rgb(215, 70, 60)",
+        "3": "rgb(116, 155, 88)",
+        "4": "rgb(240, 230, 133)",
+        "5": "rgb(70, 105, 131)",
+        "6": "rgb(186, 99, 56)",
+        "7": "rgb(93, 177, 221)",
+        "8": "rgb(128, 34, 104)",
+        "9": "rgb(107, 215, 107)",
+        "10": "rgb(213, 149, 167)",
+        "11": "rgb(146, 72, 34)",
+        "12": "rgb(131, 123, 141)",
+        "13": "rgb(199, 81, 39)",
+        "14": "rgb(213, 143, 92)",
+        "15": "rgb(122, 101, 165)",
+        "16": "rgb(228, 175, 105)",
+        "17": "rgb(59, 27, 83)",
+        "18": "rgb(205, 222, 183)",
+        "19": "rgb(97, 42, 121)",
+        "20": "rgb(174, 31, 99)",
+        "21": "rgb(231, 199, 111)",
+        "22": "rgb(90, 101, 94)",
+        "23": "rgb(204, 153, 0)",
+        "24": "rgb(153, 204, 0)",
+        "25": "rgb(51, 204, 0)",
+        "26": "rgb(0, 204, 51)",
+        "27": "rgb(0, 204, 153)",
+        "28": "rgb(0, 153, 204)",
+        "29": "rgb(10, 71, 255)",
+        "30": "rgb(71, 117, 255)",
+        "31": "rgb(255, 194, 10)",
+        "32": "rgb(255, 209, 71)",
+        "33": "rgb(153, 0, 51)",
+        "34": "rgb(153, 26, 0)",
+        "35": "rgb(153, 102, 0)",
+        "36": "rgb(128, 153, 0)",
+        "37": "rgb(51, 153, 0)",
+        "38": "rgb(0, 153, 26)",
+        "39": "rgb(0, 153, 102)",
+        "40": "rgb(0, 128, 153)",
+        "41": "rgb(0, 51, 153)",
+        "42": "rgb(26, 0, 153)",
+        "43": "rgb(102, 0, 153)",
+        "44": "rgb(153, 0, 128)",
+        "45": "rgb(214, 0, 71)",
+        "46": "rgb(255, 20, 99)",
+        "47": "rgb(0, 214, 143)",
+        "48": "rgb(20, 255, 177)"
+    };
+
+    //  aliasing
+    for (let key of Object.keys(GWASColors)) {
+        const altName = "chr" + key;
+        GWASColors[altName] = GWASColors[key];
+    }
+
+    // romanizing
+    for(let a = 1; a <= 48; a++) {
+        if(a === 10) continue   // Don't overide "X"
+        const roman = romanize(a);
+        GWASColors[roman] = GWASColors[a.toString()];
+    }
+
+
+    function romanize (num) {
+        if (!+num) return false;
+        var digits = String(+num).split('');
+        var key = ['','C','CC','CCC','CD','D','DC','DCC','DCCC','CM',
+            '','X','XX','XXX','XL','L','LX','LXX','LXXX','XC',
+            '','I','II','III','IV','V','VI','VII','VIII','IX'];
+        var roman = '', i = 3;
+        while (i--) roman = (key[+digits.pop() + (i * 10)] || '') + roman;
+        return Array(+digits.join('') + 1).join('M') + roman;
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const DEFAULT_POPOVER_WINDOW = 100000000;
+
+    //const type = "gwas";
+
+    class GWASTrack extends TrackBase {
+
+        constructor(config, browser) {
+
+            super(config, browser);
+        }
+
+        init(config) {
+
+            super.init(config);
+
+            this.useChrColors = config.useChrColors === undefined ? true : config.useChrColors;
+            this.trait = config.trait;
+            this.posteriorProbability = config.posteriorProbability;
+            this.valueProperty = "bed" === config.format ? "score" : "value";
+            this.height = config.height || 100;   // The preferred height
+            this.autoscale = config.autoscale;
+            this.autoscalePercentile = config.autoscalePercentile === undefined ? 98 : config.autoscalePercentile;
+            this.background = config.background;    // No default
+            this.divider = config.divider || "rgb(225,225,225)";
+            this.dotSize = config.dotSize || 3;
+            this.popoverWindow = (config.popoverWindow === undefined ? DEFAULT_POPOVER_WINDOW : config.popoverWindow);
+
+            // Color settings
+            if (this.useChrColors) {
+                this.colorScale = new ColorTable(config.colorTable || GWASColors);
+            } else if (config.color) {
+                this.colorScale = new ConstantColorScale(config.color);
+            } else {
+                this.colorScale =
+                    new BinnedColorScale(config.colorScale ||
+                        {
+                            thresholds: [5e-8, 5e-4, 0.5],
+                            colors: ["rgb(255,50,50)", "rgb(251,100,100)", "rgb(251,170,170)", "rgb(227,238,249)"],
+                        });
+            }
+
+            this.featureSource = FeatureSource(config, this.browser.genome);
+        }
+
+        async postInit() {
+
+            if (typeof this.featureSource.getHeader === "function") {
+                this.header = await this.featureSource.getHeader();
+                if (this.disposed) return   // This track was removed during async load
+            }
+
+            // Set properties from track line
+            if (this.header) {
+                this.setTrackProperties(this.header);   // setTrackProperties defined in TrackBase
+            }
+
+            // Set initial range if specfied, unless autoscale == true
+            if (!this.autoscale) {
+                if (this.posteriorProbability) {
+                    this.dataRange = {
+                        min: this.config.min === undefined ? 0 : this.config.min,
+                        max: this.config.max === undefined ? 1 : this.config.max
+                    };
+                } else {
+                    this.dataRange = {
+                        min: this.config.min === undefined ? 0 : this.config.min,
+                        max: this.config.max === undefined ? 25 : this.config.max
+                    };
+                }
+            }
+
+            return this
+
+        }
+
+
+        get supportsWholeGenome() {
+            return true
+        }
+
+        async getFeatures(chr, start, end) {
+            const visibilityWindow = this.visibilityWindow;
+            return this.featureSource.getFeatures({chr, start, end, visibilityWindow})
+        }
+
+        draw(options) {
+
+            const featureList = options.features;
+            const ctx = options.context;
+            const pixelWidth = options.pixelWidth;
+            const pixelHeight = options.pixelHeight;
+            if (this.background) {
+                IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': this.background});
+            }
+            IGVGraphics.strokeLine(ctx, 0, pixelHeight - 1, pixelWidth, pixelHeight - 1, {'strokeStyle': this.divider});
+
+            if (featureList) {
+
+                const bpPerPixel = options.bpPerPixel;
+                const bpStart = options.bpStart;
+                const bpEnd = bpStart + pixelWidth * bpPerPixel + 1;
+                for (let variant of featureList) {
+                    const pos = variant.start;
+                    if (pos < bpStart) continue
+                    if (pos > bpEnd) break
+
+                    let val;
+                    if (this.posteriorProbability) {
+                        val = variant[this.valueProperty];
+                    } else {
+                        const pvalue = variant[this.valueProperty];
+                        if (!pvalue) continue
+                        val = -Math.log10(pvalue);
+                    }
+
+                    const colorKey = this.useChrColors ?
+                        variant._f ? variant._f.chr : variant.chr :
+                        val;
+
+                    const color = this.colorScale.getColor(colorKey);
+                    const yScale = (this.dataRange.max - this.dataRange.min) / pixelHeight;
+                    const px = Math.round((pos - bpStart) / bpPerPixel);
+                    const py = Math.max(this.dotSize, pixelHeight - Math.round((val - this.dataRange.min) / yScale));
+
+                    if (color) {
+                        IGVGraphics.setProperties(ctx, {fillStyle: color, strokeStyle: "black"});
+                    }
+                    IGVGraphics.fillCircle(ctx, px, py, this.dotSize);
+                    variant.px = px;
+                    variant.py = py;
+                }
+            }
+        }
+
+        paintAxis(ctx, pixelWidth, pixelHeight) {
+
+            IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+            var font = {
+                'font': 'normal 10px Arial',
+                'textAlign': 'right',
+                'strokeStyle': "black"
+            };
+
+            const yScale = (this.dataRange.max - this.dataRange.min) / pixelHeight;
+            if (this.posteriorProbability) {
+                const n = 0.1;
+                for (let p = this.dataRange.min; p < this.dataRange.max; p += n) {
+                    const yp = pixelHeight - Math.round((p - this.dataRange.min) / yScale);
+                    IGVGraphics.strokeLine(ctx, 45, yp - 2, 50, yp - 2, font); // Offset dashes up by 2 pixel
+                    IGVGraphics.fillText(ctx, p.toFixed(1), 44, yp + 2, font); // Offset numbers down by 2 pixels;
+                }
+            } else {
+                const n = Math.ceil((this.dataRange.max - this.dataRange.min) * 10 / pixelHeight);
+                for (let p = this.dataRange.min; p < this.dataRange.max; p += n) {
+                    const yp = pixelHeight - Math.round((p - this.dataRange.min) / yScale);
+                    IGVGraphics.strokeLine(ctx, 45, yp, 50, yp, font); // Offset dashes up by 2 pixel
+                    IGVGraphics.fillText(ctx, Math.floor(p), 44, yp + 4, font); // Offset numbers down by 2 pixels;
+                }
+            }
+
+            font['textAlign'] = 'center';
+            if (this.posteriorProbability) {
+                IGVGraphics.fillText(ctx, "PPA", pixelWidth / 2, pixelHeight / 2, font, {rotate: {angle: -90}});
+            } else {
+                IGVGraphics.fillText(ctx, "-log10(pvalue)", pixelWidth / 2, pixelHeight / 2, font, {rotate: {angle: -90}});
+            }
+        }
+
+        popupData(clickState, features) {
+
+            if (features === undefined) features = clickState.viewport.cachedFeatures;
+
+            let data = [];
+            const track = clickState.viewport.trackView.track;
+
+            if (features) {
+                let count = 0;
+                for (let f of features) {
+                    const xDelta = Math.abs(clickState.canvasX - f.px);
+                    const yDelta = Math.abs(clickState.canvasY - f.py);
+                    const value = f[this.valueProperty];
+                    if (xDelta < this.dotSize && yDelta < this.dotSize) {
+                        if (count > 0) {
+                            data.push("<HR/>");
+                        }
+                        if (count == 5) {
+                            data.push("...");
+                            break
+                        }
+                        if (typeof f.popupData === 'function') {
+                            data = data.concat(f.popupData());
+                        } else {
+                            const chr = f.realChr || f.chr;
+                            const pos = (f.realStart || f.start) + 1;
+                            data.push({name: 'chromosome', value: chr});
+                            data.push({name: 'position', value: pos});
+                            data.push({name: 'name', value: f.name});
+                            if (track.posteriorProbability) {
+                                data.push({name: 'posterior probability', value: value});
+                            } else {
+                                data.push({name: 'pValue', value: value});
+                            }
+                        }
+                        count++;
+                    }
+                }
+            }
+
+            return data
+        }
+
+        menuItemList() {
+            return MenuUtils.numericDataMenuItems(this.trackView)
+        }
+
+        doAutoscale(featureList) {
+
+            if (featureList.length > 0) {
+                // posterior probabilities are treated without modification, but we need to take a negative logarithm of P values
+                const valueProperty = this.valueProperty;
+                const posterior = this.posteriorProbability;
+                const features =
+                    featureList.map(function (feature) {
+                        const v = feature[valueProperty];
+                        return {value: posterior ? v : -Math.log(v) / Math.LN10}
+                    });
+                this.dataRange = doAutoscale(features);
+
+            } else {
+                // No features -- pick something reasonable for PPAs and p-values
+                if (this.posteriorProbability) {
+                    this.dataRange = {min: this.config.min || 0, max: this.config.max || 1};
+                } else {
+                    this.dataRange = {min: this.config.max || 25, max: this.config.min || 0};
+                }
+            }
+
+            return this.dataRange
+        }
+
+    }
+
+    const X_PIXEL_DIFF_THRESHOLD = 1;
+
+    class GCNVTrack extends TrackBase {
+
+        constructor(config, browser) {
+            super(config, browser);
+        }
+
+        init(config) {
+            super.init(config);
+
+            this.autoscale = config.autoscale || config.max === undefined;
+            this.dataRange = {
+                min: config.min || 0,
+                max: config.max
+            };
+
+            this.windowFunction = config.windowFunction || "mean";
+            this.paintAxis = paintAxis;
+            this.graphType = config.graphType || "bar";
+
+            //hack to avoid creating feature source multiple times.  If config.type is not set the file must be read
+            //to determine type, which results in creation of a feature source.
+            if (config._featureSource) {
+                this.featureSource = config._featureSource;
+                delete config._featureSource;
+            } else {
+                this.featureSource = FeatureSource(this.config, this.browser.genome);
+            }
+
+            // Visibility window hardcoded to -1  (== whole chromosome).  Draw method needs feature beyond current view,
+            // when/if this is resolved visibilityWindow can be used.
+            this.visibilityWindow = -1;
+            this.featureSource.visibilityWindow = this.visibilityWindow;
+        }
+
+        async postInit() {
+
+            if (typeof this.featureSource.getHeader === "function") {
+                this.header = await this.featureSource.getHeader();
+                if(this.disposed) return;   // This track was removed during async load
+                this.sampleNames = this.header.columnNames.slice(3);
+
+                // Set generic properties from track line
+                this.setTrackProperties(this.header);   // setTrackProperties defined in TrackBase
+
+                // set option to highlight sample track line on click
+                if (this.header.hasOwnProperty("clickToHighlight")) {
+                    let colour = this.header["clickToHighlight"];
+                    this.config.clickToHighlight = colour;
+                    this.config.samplesClickedToHighlight = {};
+                }
+
+                // Special track line properties
+                if (this.header.hasOwnProperty("highlight")) {
+                    this.config.highlightSamples = {};
+                    let v = this.header["highlight"];
+                    if (!Array.isArray(v)) v = [v];
+                    for (let h of v) {
+                        const tokens = h.split(";");
+                        if (tokens.length === 2) {
+                            this.config.highlightSamples[tokens[0]] = tokens[1];
+                        }
+
+                    }
+                }
+            }
+        }
+
+        menuItemList() {
+            return MenuUtils.numericDataMenuItems(this.trackView)
+        }
+
+        async getFeatures(chr, start, end) {
+            const chrFeatures = await this.featureSource.getFeatures({
+                chr,
+                start: 0,
+                end: Number.MAX_SAFE_INTEGER,
+                visibilityWindow: this.visibilityWindow
+            });
+            let prevIndex = undefined;
+            let nextIndex = undefined;
+            for (let i = 1; i < chrFeatures.length - 1; i++) {
+                if (prevIndex === undefined && chrFeatures[i].end > start) {
+                    prevIndex = i - 1;
+                }
+                if (nextIndex === undefined && chrFeatures[i].start > end) {
+                    nextIndex = i + 1;
+                    break
+                }
+            }
+            if (prevIndex === undefined) prevIndex = 0;
+            if (nextIndex === undefined) nextIndex = chrFeatures.length;
+            return chrFeatures.slice(prevIndex, nextIndex)
+        }
+
+        draw(options) {
+
+            const {features, context, bpPerPixel, bpStart, pixelWidth, pixelHeight} = options;
+
+            ///let baselineColor;
+            //if (typeof self.color === "string" && self.color.startsWith("rgb(")) {
+            //    baselineColor = IGVColor.addAlpha(self.color, 0.1);
+            //}
+
+            const yScale = (yValue) => {
+                return ((this.dataRange.max - yValue) / (this.dataRange.max - this.dataRange.min)) * pixelHeight
+            };
+
+            const getX = function (bpPosition) {
+                let x = Math.floor((bpPosition - bpStart) / bpPerPixel);
+                if (isNaN(x)) console.warn('isNaN(x). feature start ' + numberFormatter$1(bpPosition) +
+                    ' bp start ' + numberFormatter$1(bpStart));
+                return x
+            };
+
+            const drawGuideLines = (options) => {
+                if (this.config.hasOwnProperty('guideLines')) {
+                    for (let line of this.config.guideLines) {
+                        if (line.hasOwnProperty('color') && line.hasOwnProperty('y') && line.hasOwnProperty('dotted')) {
+                            let y = yScale(line.y);
+                            let props = {
+                                'strokeStyle': line['color'],
+                                'strokeWidth': 2
+                            };
+                            if (line['dotted']) IGVGraphics.dashedLine(options.context, 0, y, options.pixelWidth, y, 5, props);
+                            else IGVGraphics.strokeLine(options.context, 0, y, options.pixelWidth, y, props);
+                        }
+                    }
+                }
+            };
+
+            if (features && features.length > 0) {
+
+                if (this.dataRange.min === undefined) this.dataRange.min = 0;
+
+                // Max can be less than min if config.min is set but max left to autoscale. If that's the case there is
+                // nothing to paint.
+                if (this.dataRange.max > this.dataRange.min) {
+                    const highlightSamples = this.config.highlightSamples;
+                    const onlyHandleClicksForHighlightedSamples = this.config.onlyHandleClicksForHighlightedSamples;
+                    const clickToHighlight = this.config.clickToHighlight;
+
+                    let previousEnd = -1;
+                    let previousValues = {};
+
+                    let highlightConnectorLines = [];
+                    let highlightFeatureLines = [];
+
+                    // clickDetectorCache allows fast retrieval of whether a mouse click hits a rendered line segment
+                    // by storing lists of rendered line segments, keyed by their right x coordinate in canvas pixel space.
+                    // this cache is regenerated on every draw.
+                    this.clickDetectorCache = {};
+
+                    for (let feature of features) {
+                        const x1 = getX(feature.start);
+                        const x2 = getX(feature.end);
+                        const previousX = previousEnd >= 0 ? getX(previousEnd) : x1;
+
+                        if (isNaN(x1) || isNaN(x2)) continue
+                        // if ((x1 - previousX < X_PIXEL_DIFF_THRESHOLD) && (x2 - x1 < X_PIXEL_DIFF_THRESHOLD)) continue;
+
+                        this.clickDetectorCache[x1] = [];
+                        this.clickDetectorCache[x2] = [];
+                        for (let i = 0; i < feature.values.length; i++) {
+                            const sampleName = this.sampleNames[i];
+                            const value = feature.values[i];
+                            const y = yScale(value);
+                            if (x1 - previousX >= X_PIXEL_DIFF_THRESHOLD) {
+                                const previousValue = previousValues[sampleName];
+                                const previousY = yScale(previousValue);
+                                const highlightColor = highlightSamples && highlightSamples[sampleName];
+
+
+                                if (highlightColor) {
+                                    highlightConnectorLines.push([previousX, previousY, x1, y, highlightColor]);
+                                } else if (clickToHighlight && sampleName in this.config.samplesClickedToHighlight) {
+                                    highlightConnectorLines.push([previousX, previousY, x1, y, this.config.samplesClickedToHighlight[sampleName]]);
+                                } else {
+                                    IGVGraphics.strokeLine(context, previousX, previousY, x1, y, {strokeStyle: '#D9D9D9'});
+                                }
+                                if (!onlyHandleClicksForHighlightedSamples || sampleName in highlightSamples) {
+                                    this.clickDetectorCache[x1].push([previousX, previousY, x1, y, sampleName, highlightColor || 'gray']);
+                                }
+                            }
+
+                            if (x2 - x1 >= X_PIXEL_DIFF_THRESHOLD) {
+                                const highlightColor = highlightSamples && highlightSamples[sampleName];
+                                if (highlightColor) {
+                                    highlightFeatureLines.push([x1, y, x2, y, highlightColor]);
+                                } else if (clickToHighlight && sampleName in this.config.samplesClickedToHighlight) {
+                                    highlightFeatureLines.push([x1, y, x2, y, this.config.samplesClickedToHighlight[sampleName]]);
+                                } else {
+                                    IGVGraphics.strokeLine(context, x1, y, x2, y, {strokeStyle: 'gray'});
+                                }
+                                if (!onlyHandleClicksForHighlightedSamples || sampleName in highlightSamples) {
+                                    this.clickDetectorCache[x2].push([x1, y, x2, y, sampleName, highlightColor || 'gray']);
+                                }
+                            }
+
+                            previousValues[sampleName] = value;
+
+                            //IGVGraphics.fillCircle(ctx, px, y, pointSize / 2, {"fillStyle": color, "strokeStyle": color});
+                            //IGVGraphics.fillRect(ctx, x, y, width, height, {fillStyle: color});
+                        }
+                        previousEnd = feature.end;
+                    }
+
+                    for (let f of highlightConnectorLines) {
+                        IGVGraphics.strokeLine(context, f[0], f[1], f[2], f[3], {strokeStyle: f[4], lineWidth: 1.3});
+                    }
+                    for (let f of highlightFeatureLines) {
+                        IGVGraphics.strokeLine(context, f[0], f[1], f[2], f[3], {strokeStyle: f[4], lineWidth: 2});
+                    }
+
+                    /*
+                    // If the track includes negative values draw a baseline
+                    if (this.dataRange.min < 0) {
+                        const basepx = (self.dataRange.max / (this.dataRange.max - this.dataRange.min)) * options.pixelHeight;
+                        IGVGraphics.strokeLine(context, 0, basepx, options.pixelWidth, basepx, {strokeStyle: baselineColor});
+                    }
+                    */
+                }
+            }
+
+            drawGuideLines(options);
+        }
+
+        doAutoscale(features) {
+
+            let min, max;
+            if (features.length > 0) {
+                min = Number.MAX_VALUE;
+                max = -Number.MAX_VALUE;
+
+                features.forEach(function (feature) {
+                    min = Math.min(min, ...feature.values);
+                    max = Math.max(max, ...feature.values);
+                });
+
+                min -= 0.01;
+                max += 0.01;
+            } else {
+                // No features -- default
+                min = 0;
+                max = 100;
+            }
+
+            return {min: min, max: max}
+        }
+
+        clickedFeatures(clickState) {
+            //console.warn('click', clickState.canvasX, clickState.canvasY, clickState)
+
+            const BOUNDING_BOX_PADDING = 10;
+            const MIN_DISTANCE_TO_SEGMENT = 5;
+
+            const clickX = clickState.canvasX;
+            const clickY = clickState.canvasY;
+
+            let key = null;
+            for (key of Object.keys(this.clickDetectorCache)) {
+                key = parseInt(key);
+                if (key >= clickX) {
+                    break
+                }
+            }
+
+
+            if (key) {
+                let closestDistanceSoFar = Number.MAX_VALUE;
+                let closestResult = [];
+                const segments = this.clickDetectorCache[key];
+                for (let segment of segments) {
+                    const x1 = segment[0];
+                    const x2 = segment[2];
+                    if (clickX < x1 || clickX > x2) return []
+
+                    const y1 = segment[1];
+                    const y2 = segment[3];
+
+                    if ((clickY < Math.min(y1, y2) - BOUNDING_BOX_PADDING) || (clickY > Math.max(y1, y2) + BOUNDING_BOX_PADDING)) continue
+
+                    const distance = distanceToLine(clickX, clickY, x1, y1, x2, y2);
+                    if (distance < closestDistanceSoFar) {
+                        closestResult = [{'name': segment[4], 'color': segment[5]}];
+                        closestDistanceSoFar = distance;
+                        //console.warn('closest:', 'name', segment[4], 'color', segment[5], distance);
+                    }
+                }
+
+                if (closestDistanceSoFar < MIN_DISTANCE_TO_SEGMENT) {
+                    // clickToHighlight set, add sample to dict of clicked lines
+                    if (this.config.clickToHighlight) {
+                        if (closestResult[0]['name'] in this.config.samplesClickedToHighlight) {
+                            // clicked sample already highlighted => remove if clicked again
+                            delete this.config.samplesClickedToHighlight[closestResult[0]['name']];
+                        } else if (this.config.clickToHighlight === 'any') {
+                            var colourList = [
+                                'red', 'darkblue', 'green', 'teal', 'olivedrab',
+                                'orange', 'maroon', 'purple', 'blue', 'gold',
+                            ];
+                            var colour = colourList[Math.floor(Math.random() * (colourList.length + 1))];
+                            this.config.samplesClickedToHighlight[closestResult[0]['name']] = colour;
+                        } else {
+                            this.config.samplesClickedToHighlight[closestResult[0]['name']] = this.config.clickToHighlight;
+                        }
+                        this.trackView.repaintViews();  // prompt redraw to change colour of clicked sample
+                    }
+                    return closestResult
+                }
+            }
+
+            return []
+        }
+
+        popupData(clickState, features) {
+
+            if(features === undefined) features = this.clickedFeatures(clickState);
+
+            const items = [];
+            features.forEach(function (f) {
+                for (let property of Object.keys(f)) {
+                    if (isSimpleType(f[property])) {
+                        items.push({name: property, value: f[property]});
+                    }
+                }
+            });
+
+            return items
+        }
+
+        get supportsWholeGenome() {
+            return false
+        }
+    }
+
+
+    function distanceToLine(x, y, ax, ay, bx, by) {
+        /*
+            Finds distance between point (x, y) and line defined by points (ax, ay) (bx, by)
+            based on http://mathworld.wolfram.com/Point-LineDistance2-Dimensional.html
+        */
+
+        const bx_minus_ax = bx - ax;
+        const by_minus_ay = by - ay;
+        const v = Math.abs(bx_minus_ax * (ay - y) - (ax - x) * by_minus_ay);
+        const r = Math.sqrt(bx_minus_ax * bx_minus_ax + by_minus_ay * by_minus_ay);
+
+        const distance = r > 0 ? v / r : 0;
+        //console.warn('Check if', x, y, 'is within', ax, ay, bx, by, '. Distance from line: ', distance);
+
+        return distance
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class RnaStructTrack extends TrackBase {
+
+        constructor(config, browser) {
+
+            super(config, browser);
+
+            // Set defaults
+            if (!config.height) {
+                this.height = 300;
+            }
+
+            this.arcOrientation = false;
+
+            this.theta = Math.PI / 2;
+
+            if ("bp" === config.format) {
+                this.featureSource = new RNAFeatureSource(config, browser.genome);
+            } else {
+                this.featureSource = new TextFeatureSource(config, browser.genome);
+            }
+        }
+
+        async getFeatures(chr, start, end) {
+            const visibilityWindow = this.visibilityWindow;
+            return this.featureSource.getFeatures({chr, start, end, visibilityWindow})
+        }
+
+        draw(options) {
+
+            const ctx = options.context;
+
+            const theta = Math.PI / 2;
+            const pixelWidth = options.pixelWidth;
+            const pixelHeight = options.pixelHeight;
+            options.viewportWidth;
+            const bpPerPixel = options.bpPerPixel;
+            const bpStart = options.bpStart;
+            const xScale = bpPerPixel;
+            const orienation = this.arcOrientation;
+
+            IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+
+            const featureList = options.features;
+
+            if (featureList) {
+
+                // Sort by score -- draw lowest scored features first
+                sortByScore(featureList, 1);
+
+                for (let feature of featureList) {
+
+                    if (feature.startLeft) {
+
+                        let sl = Math.round((feature.startLeft - bpStart) / xScale);
+                        let sr = Math.round((feature.startRight - bpStart) / xScale);
+                        let el = Math.round((feature.endLeft - bpStart) / xScale);
+                        let er = Math.round((feature.endRight - bpStart) / xScale);
+
+                        ctx.fillStyle = feature.color;
+                        ctx.strokeStyle = feature.color;
+                        ctx.beginPath();
+
+                        // First arc
+                        let x1 = (sl + er) / 2;
+                        let r1 = (er - sl) / 2;
+                        let y1 = this.height;
+                        let sa = Math.PI + (Math.PI / 2 - theta);
+                        let ea = 2 * Math.PI - (Math.PI / 2 - theta);
+
+                        if (orienation) {
+                            y1 = 0;
+                            ctx.arc(x1, y1, r1, ea, sa);
+                            ctx.lineTo(er, y1);
+                        } else {
+                            ctx.arc(x1, y1, r1, sa, ea);
+                            ctx.lineTo(el, y1);
+                        }
+
+                        // Second arc
+                        const x2 = (sr + el) / 2;
+                        const r2 = (el - sr) / 2;
+                        const y2 = y1;                        // Only for theta == pi/2
+
+                        if (orienation) {
+                            ctx.arc(x2, y2, r2, sa, ea, true);
+                            ctx.lineTo(el, y2);
+                        } else {
+                            ctx.arc(x2, y2, r2, ea, sa, true);
+                            ctx.lineTo(sl, y2);
+                        }
+
+                        ctx.stroke();
+                        ctx.fill();
+
+                        feature.drawState = {x1: x1, y1: y1, r1: r1, x2: x2, y2: y2, r2: r2, sa: sa, ea: ea};
+                    } else {
+                        let s = Math.round((feature.start - bpStart) / xScale);
+                        let e = Math.round((feature.end - bpStart) / xScale);
+
+                        ctx.strokeStyle = feature.color;
+
+                        ctx.beginPath();
+
+                        // First arc
+                        let x = (s + e) / 2;
+                        let r = (e - s) / 2;
+                        let y = this.height;
+                        let sa = Math.PI + (Math.PI / 2 - theta);
+                        let ea = 2 * Math.PI - (Math.PI / 2 - theta);
+
+                        if (orienation) {
+                            y = 0;
+                            ctx.arc(x, y, r, ea, sa);
+                        } else {
+                            ctx.arc(x, y, r, sa, ea);
+                        }
+
+                        ctx.stroke();
+
+                        feature.drawState = {x1: x, y1: y, r1: r, sa: sa, ea: ea};
+
+                    }
+
+                }
+            }
+        }
+
+        clickedFeatures(clickState) {
+
+            const features = super.clickedFeatures(clickState);
+
+            const clicked = [];
+
+            // Sort by score in descending order   (opposite order than drawn)
+            sortByScore(features, -1);
+
+            for (let f of features) {
+                const ds = f.drawState;
+
+                // Distance from arc radius, or outer arc for type ".bp"
+                const dx1 = (clickState.canvasX - ds.x1);
+                const dy1 = (clickState.canvasY - ds.y1);
+                const d1 = Math.sqrt(dx1 * dx1 + dy1 * dy1);
+                const outerLim = ds.r1 + 3;
+
+
+                let d2;
+                let innerLim;
+                if (ds.x2 === undefined) {
+                    d2 = d1;
+                    innerLim = ds.r1 - 3;
+
+                } else {
+                    const dx2 = (clickState.canvasX - ds.x2);
+                    const dy2 = (clickState.canvasY - ds.y2);
+                    d2 = Math.sqrt(dx2 * dx2 + dy2 * dy2);
+                    innerLim = ds.r2 - 3;
+                }
+
+
+                // Between outer and inner arcs, with some tolerance
+                if (d1 < outerLim && d2 > innerLim) {
+                    clicked.push(f);
+                    break
+                }
+            }
+            return clicked
+        }
+
+        popupData(clickState, features) {
+
+            if(features === undefined) features = this.clickedFeatures(clickState);
+
+            if (features && features.length > 0) {
+
+                return this.extractPopupData(features[0], this.getGenomeId())
+
+            }
+        }
+
+        menuItemList() {
+
+            var self = this;
+
+            return [
+                {
+                    name: "Toggle arc direction",
+                    click: function () {
+                        self.arcOrientation = !self.arcOrientation;
+                        self.trackView.repaintViews();
+                    }
+                }
+            ]
+
+        };
+
+
+    }
+
+    function sortByScore(featureList, direction) {
+
+        featureList.sort(function (a, b) {
+            const s1 = a.score === undefined ? -Number.MAX_VALUE : a.score;
+            const s2 = b.score === undefined ? -Number.MAX_VALUE : b.score;
+            const d = direction === undefined ? 1 : direction;
+
+            return d * (s1 - s2)
+        });
+    }
+
+
+    class RNAFeatureSource {
+
+        constructor(config, genome) {
+            this.config = config;
+            this.genome = genome;
+        }
+
+        async getFeatures({chr, start, end, bpPerPixel, visibilityWindow}) {
+
+
+            const genome = this.genome;
+
+            if (!this.featureCache) {
+
+                const options = buildOptions(this.config);
+
+                const data = await igvxhr.loadString(this.config.url, options);
+
+                this.featureCache = new FeatureCache$1(parseBP(data), genome);
+
+                return this.featureCache.queryFeatures(chr, start, end)
+
+            } else {
+                return this.featureCache.queryFeatures(chr, start, end)
+            }
+
+            function parseBP(data) {
+
+                if (!data) return null
+
+                const dataWrapper = getDataWrapper(data);
+
+                let header = true;
+                let line;
+                const colors = [];
+                const descriptors = [];
+                const features = [];
+
+                while ((line = dataWrapper.nextLine()) !== undefined) {
+
+                    const tokens = line.split('\t');
+
+                    if (header && line.startsWith("color:")) {
+                        const color = "rgb(" + tokens[1] + "," + tokens[2] + "," + tokens[3] + ")";
+                        colors.push(color);
+                        if (tokens.length > 4) {
+                            descriptors.push(tokens[4]);
+                        }
+                        // TODO - use label
+                    } else {
+                        header = false;
+
+                        const chr = tokens[0];
+                        const startLeftNuc = Number.parseInt(tokens[1]) - 1;
+                        const startRightNuc = Number.parseInt(tokens[2]) - 1;
+                        const endLeftNuc = Number.parseInt(tokens[3]);
+                        const endRightNuc = Number.parseInt(tokens[4]);
+                        var colorIdx = Number.parseInt(tokens[5]);
+                        const color = colors[colorIdx];
+
+
+                        let feature;
+                        if (startLeftNuc <= endRightNuc) {
+                            feature = {
+                                chr: chr,
+                                startLeft: Math.min(startLeftNuc, startRightNuc),
+                                startRight: Math.max(startLeftNuc, startRightNuc),
+                                endLeft: Math.min(endLeftNuc, endRightNuc),
+                                endRight: Math.max(endLeftNuc, endRightNuc),
+                                color: color,
+                                score: colorIdx
+                            };
+                        } else {
+                            feature = {
+                                chr: chr,
+                                startLeft: Math.min(endLeftNuc, endRightNuc),
+                                startRight: Math.max(endLeftNuc, endRightNuc),
+                                endLeft: Math.min(startLeftNuc, startRightNuc),
+                                endRight: Math.max(startLeftNuc, startRightNuc),
+                                color: color,
+                                score: colorIdx
+                            };
+                        }
+
+                        feature.start = feature.startLeft;
+                        feature.end = feature.endRight;
+
+                        if (descriptors.length > colorIdx) {
+                            feature.description = descriptors[colorIdx];
+                        }
+
+                        features.push(feature);
+                    }
+                }
+
+                return features
+            }
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    /**
+     * Class represents an ideogram of a chromsome cytobands.  It is used for the header of a track panel.
+     *
+     */
+    class IdeogramTrack {
+        constructor(browser) {
+            this.browser = browser;
+            this.type = 'ideogram';
+            this.height = 16;
+            this.order = Number.MIN_SAFE_INTEGER;
+            this.disableButtons = true;
+            this.ignoreTrackMenu = true;
+        }
+
+        async getFeatures(chr, start, end) {
+            return []
+        }
+
+        computePixelHeight(ignore) {
+            return this.height
+        }
+
+        draw({context, referenceFrame, pixelWidth, pixelHeight}) {
+
+            const chr = referenceFrame.chr;
+            const chromosome = referenceFrame.genome.getChromosome(chr);
+
+            if (undefined === chromosome || pixelWidth <= 0 || pixelHeight <= 0 || 'all' === chr.toLowerCase()) {
+                return
+            }
+
+            const stainColors = [];
+
+            drawIdeogram({
+                ctx: context,
+                chr,
+                referenceFrame,
+                genome: referenceFrame.genome,
+                width: pixelWidth,
+                height: pixelHeight,
+                stainColors
+            });
+
+            const widthBP = Math.round(referenceFrame.bpPerPixel * pixelWidth);
+            const xBP = referenceFrame.start;
+
+            // Total chromosome length can be > chromosome.bpLength for partial fastas.
+            let chrLength = chromosome.bpLength;
+            const cytobands = referenceFrame.genome.getCytobands(chr);
+            if (cytobands && cytobands.length > 0 && cytobands[cytobands.length - 1].end) {
+                chrLength = Math.max(chrLength, cytobands[cytobands.length - 1].end);
+                chromosome.bpLength = chrLength;   // Correct bp length, bit of a hack
+            }
+
+            if (widthBP < chrLength) {
+
+                const percentWidth = widthBP / chrLength;
+                const percentX = xBP / chrLength;
+
+                let x = Math.floor(percentX * pixelWidth);
+                let ww = Math.floor(percentWidth * pixelWidth);
+
+                x = Math.max(0, x);
+                x = Math.min(pixelWidth - ww, x);
+
+                // Push current context
+                context.save();
+
+                // Draw red box
+                context.strokeStyle = "red";
+                context.lineWidth = (ww < 2) ? 1 : 2;
+
+                const xx = x + (context.lineWidth) / 2;
+                ww = (ww < 2) ? 1 : ww - context.lineWidth;
+
+                const yy = context.lineWidth / 2;
+                const hh = pixelHeight - context.lineWidth;
+
+                context.strokeRect(xx, yy, ww, hh);
+
+                // Pop current context
+                context.restore();
+            }
+
+        }
+
+        dispose() {
+            this.trackView = undefined;
+        }
+    }
+
+    function drawIdeogram({ctx, chr, referenceFrame, genome, width, height, stainColors}) {
+
+        const shim = 1;
+        const shim2 = 0.5 * shim;
+        const ideogramTop = 0;
+
+        if (undefined === genome) {
+            return
+        }
+
+        IGVGraphics.fillRect(ctx, 0, 0, width, height, {fillStyle: IGVColor.greyScale(255)});
+
+        const cytobands = genome.getCytobands(chr);
+        if (cytobands) {
+
+            const center = (ideogramTop + height / 2);
+
+            const xC = [];
+            const yC = [];
+
+            if (0 === cytobands.length) {
+                return
+            }
+
+            // Get chrLength from the cytobands -- chromsome.bpLength might not work for igv-reports fasta files, which
+            // contain only a portion of the chromosome sequence
+            // *DOESNT WORK* const chrLength = referenceFrame.genome.getChromosome(chr).bpLength;
+
+            const chrLength = cytobands[cytobands.length - 1].end;
+            const scale = width / chrLength;
+
+            // round rect clipping path
+            ctx.beginPath();
+            IGVGraphics.roundRect(ctx, shim2, shim2 + ideogramTop, width - 2 * shim2, height - 2 * shim2, (height - 2 * shim2) / 2, 0, 1);
+            ctx.clip();
+
+            for (let i = 0; i < cytobands.length; i++) {
+
+                const cytoband = cytobands[i];
+                const start = scale * cytoband.start;
+                const end = scale * cytoband.end;
+
+                if (cytoband.type === 'c') {
+
+                    if (cytoband.name.charAt(0) === 'p') {
+                        xC[0] = start;
+                        yC[0] = height + ideogramTop;
+                        xC[1] = start;
+                        yC[1] = ideogramTop;
+                        xC[2] = end;
+                        yC[2] = center;
+                    } else {
+                        xC[0] = end;
+                        yC[0] = height + ideogramTop;
+                        xC[1] = end;
+                        yC[1] = ideogramTop;
+                        xC[2] = start;
+                        yC[2] = center;
+                    }
+
+                    ctx.fillStyle = "rgb(150, 0, 0)";
+                    ctx.strokeStyle = "rgb(150, 0, 0)";
+                    IGVGraphics.polygon(ctx, xC, yC, 1, 0);
+                } else {
+
+                    ctx.fillStyle = getCytobandColor(stainColors, cytoband);
+                    IGVGraphics.fillRect(ctx, start, shim + ideogramTop, (end - start), height - 2 * shim);
+                }
+            }
+        }
+
+        // round rect border
+        ctx.strokeStyle = IGVColor.greyScale(41);
+        IGVGraphics.roundRect(ctx, shim2, shim2 + ideogramTop, width - 2 * shim2, height - 2 * shim2, (height - 2 * shim2) / 2, 0, 1);
+    }
+
+    function getCytobandColor(colors, data) {
+
+        if (data.type === 'c') { // centermere: "acen"
+            return "rgb(150, 10, 10)"
+        } else {
+            var stain = data.stain; // + 4;
+
+            var shade = 230;
+            if (data.type === 'p') {
+                shade = Math.floor(230 - stain / 100.0 * 230);
+            }
+            var c = colors[shade];
+            if (!c) {
+                c = "rgb(" + shade + "," + shade + "," + shade + ")";
+                colors[shade] = c;
+            }
+            return c
+
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    let JUNCTION_MOTIF_PALETTE = new PaletteColorTable("Dark2");
+
+    // Lock in color-to-motif mapping so it's independent of data loading order. This list may not include all possible
+    // motif values as this varies depending on the RNA-seq pipeline. The current list is based on STAR v2.4 docs.
+    const someMotifValues = ['GT/AG', 'CT/AC', 'GC/AG', 'CT/GC', 'AT/AC', 'GT/AT', 'non-canonical'];
+    someMotifValues.forEach(motif => {
+        JUNCTION_MOTIF_PALETTE.getColor(motif);
+    });
+
+    // rendering context with values that only need to be computed once per render, rather than for each splice junction
+    const junctionRenderingContext = {};
+
+    class SpliceJunctionTrack extends TrackBase {
+
+        constructor(config, browser) {
+            super(config, browser);
+        }
+
+
+        init(config) {
+
+            super.init(config);
+
+            this.type = config.type || 'junctions';
+
+            if (config._featureSource) {
+                this.featureSource = config._featureSource;
+                delete config._featureSource;
+            } else {
+                this.featureSource = config.featureSource ?
+                    config.featureSource :
+                    FeatureSource(config, this.browser.genome);
+            }
+
+            this.margin = config.margin === undefined ? 10 : config.margin;
+
+            if (!this.height) {
+                this.height = 100;
+            }
+
+            //set defaults
+            if (config.colorByNumReadsThreshold === undefined) {
+                config.colorByNumReadsThreshold = 5;
+            }
+        }
+
+        async postInit() {
+
+            if (typeof this.featureSource.getHeader === "function") {
+                this.header = await this.featureSource.getHeader();
+                if (this.disposed) return   // This track was removed during async load
+            }
+
+            // Set properties from track line
+            if (this.header) {
+                this.setTrackProperties(this.header);
+            }
+
+            if (this.visibilityWindow === undefined && typeof this.featureSource.defaultVisibilityWindow === 'function') {
+                this.visibilityWindow = await this.featureSource.defaultVisibilityWindow();
+            }
+
+            return this
+
+        }
+
+        get supportsWholeGenome() {
+            return false
+        }
+
+        async getFeatures(chr, start, end, bpPerPixel) {
+            const visibilityWindow = this.visibilityWindow;
+            return this.featureSource.getFeatures({chr, start, end, bpPerPixel, visibilityWindow})
+        };
+
+
+        /**
+         * The required height in pixels required for the track content.   This is not the visible track height, which
+         * can be smaller (with a scrollbar) or larger.
+         *
+         * @param features
+         * @returns {*}
+         */
+        computePixelHeight(features) {
+            return this.height
+        };
+
+        draw(options) {
+
+            const featureList = options.features;
+            const ctx = options.context;
+            const bpPerPixel = options.bpPerPixel;
+            const bpStart = options.bpStart;
+            const pixelWidth = options.pixelWidth;
+            const pixelHeight = options.pixelHeight;
+            const bpEnd = bpStart + pixelWidth * bpPerPixel + 1;
+
+
+            if (!this.config.isMergedTrack) {
+                IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': "rgb(255, 255, 255)"});
+            }
+
+            if (featureList) {
+
+
+                junctionRenderingContext.referenceFrame = options.viewport.referenceFrame;
+                junctionRenderingContext.referenceFrameStart = junctionRenderingContext.referenceFrame.start;
+                junctionRenderingContext.referenceFrameEnd = junctionRenderingContext.referenceFrameStart +
+                    junctionRenderingContext.referenceFrame.toBP(options.viewport.getWidth());
+
+                // For a given viewport, records where features that are < 2px in width have been rendered already.
+                // This prevents wasteful rendering of multiple such features onto the same pixels.
+                junctionRenderingContext.featureZoomOutTracker = {};
+
+                for (let feature of featureList) {
+                    if (feature.end < bpStart) continue
+                    if (feature.start > bpEnd) break
+                    this.renderJunction(feature, bpStart, bpPerPixel, pixelHeight, ctx);
+                }
+
+            } else {
+                console.log("No feature list");
+            }
+
+        };
+
+        /**
+         *
+         * @param feature
+         * @param bpStart  genomic location of the left edge of the current canvas
+         * @param xScale  scale in base-pairs per pixel
+         * @param pixelHeight  pixel height of the current canvas
+         * @param ctx  the canvas 2d context
+         */
+        renderJunction(feature, bpStart, xScale, pixelHeight, ctx) {
+            // cache whether this junction is rendered or filtered out. Use later to exclude non-rendered junctions from click detection.
+            feature.isVisible = false;
+
+            const junctionLeftPx = Math.round((feature.start - bpStart) / xScale);
+            const junctionRightPx = Math.round((feature.end - bpStart) / xScale);
+            const junctionMiddlePx = (junctionLeftPx + junctionRightPx) / 2;
+            if (junctionRightPx - junctionLeftPx <= 3) {
+                if (junctionMiddlePx in junctionRenderingContext.featureZoomOutTracker) {
+                    return
+                }
+                junctionRenderingContext.featureZoomOutTracker[junctionMiddlePx] = true;
+            }
+
+            // TODO: cache filter and pixel calculations by doing them earlier when features are initially parsed?
+            if (this.config.hideAnnotatedJunctions && feature.attributes.annotated_junction === "true") {
+                return
+            }
+            if (this.config.hideUnannotatedJunctions && feature.attributes.annotated_junction === "false") {
+                return
+            }
+            if (this.config.hideMotifs && this.config.hideMotifs.includes(feature.attributes.motif)) {
+                return
+            }
+            if (this.config.hideStrand === feature.strand) {
+                return
+            }
+
+            // check if splice junction is inside viewport
+            if (this.config.minJunctionEndsVisible) {
+                let numJunctionEndsVisible = 0;
+                if (feature.start >= junctionRenderingContext.referenceFrameStart && feature.start <= junctionRenderingContext.referenceFrameEnd) {
+                    numJunctionEndsVisible += 1;
+                }
+                if (feature.end >= junctionRenderingContext.referenceFrameStart && feature.end <= junctionRenderingContext.referenceFrameEnd) {
+                    numJunctionEndsVisible += 1;
+                }
+                if (numJunctionEndsVisible < this.config.minJunctionEndsVisible) {
+                    return
+                }
+            }
+
+            let uniquelyMappedReadCount;
+            let multiMappedReadCount;
+            let totalReadCount;
+            if (feature.attributes.uniquely_mapped) {
+                uniquelyMappedReadCount = parseInt(feature.attributes.uniquely_mapped);
+                if (uniquelyMappedReadCount < this.config.minUniquelyMappedReads) {
+                    return
+                }
+                multiMappedReadCount = parseInt(feature.attributes.multi_mapped);
+                totalReadCount = uniquelyMappedReadCount + multiMappedReadCount;
+                if (totalReadCount < this.config.minTotalReads) {
+                    return
+                }
+                if (totalReadCount > 0 && multiMappedReadCount / totalReadCount > this.config.maxFractionMultiMappedReads) {
+                    return
+                }
+                if (feature.attributes.maximum_spliced_alignment_overhang && parseInt(feature.attributes.maximum_spliced_alignment_overhang) < this.config.minSplicedAlignmentOverhang) {
+                    return
+                }
+            }
+
+            let numSamplesWithThisJunction;
+            if (feature.attributes.num_samples_with_this_junction) {
+                numSamplesWithThisJunction = parseInt(feature.attributes.num_samples_with_this_junction);
+                if (this.config.minSamplesWithThisJunction && numSamplesWithThisJunction < this.config.minSamplesWithThisJunction) {
+                    return
+                }
+                if (this.config.maxSamplesWithThisJunction && numSamplesWithThisJunction > this.config.maxSamplesWithThisJunction) {
+                    return
+                }
+                if (feature.attributes.num_samples_total) {
+                    feature.attributes.percent_samples_with_this_junction = 100 * numSamplesWithThisJunction / Number(feature.attributes.num_samples_total);
+                    if (this.config.minPercentSamplesWithThisJunction) {
+                        if (feature.attributes.percent_samples_with_this_junction < this.config.minPercentSamplesWithThisJunction ||
+                            feature.attributes.percent_samples_with_this_junction > this.config.maxPercentSamplesWithThisJunction) {
+                            return
+                        }
+                    }
+                }
+            }
+
+            const py = this.margin;
+            const rowHeight = this.height;
+
+            const cy = py + 0.5 * rowHeight;
+            let topY = py;
+            const bottomY = py + rowHeight;
+            const bezierBottomY = bottomY - 10;
+
+            // draw the junction arc
+            const bezierControlLeftPx = (junctionLeftPx + junctionMiddlePx) / 2;
+            const bezierControlRightPx = (junctionMiddlePx + junctionRightPx) / 2;
+
+            let lineWidth = 1;
+            if (feature.attributes.line_width) {
+                lineWidth = Number(feature.attributes.line_width);
+            } else {
+                if (this.config.thicknessBasedOn === undefined || this.config.thicknessBasedOn === 'numUniqueReads') {
+                    lineWidth = uniquelyMappedReadCount;
+                } else if (this.config.thicknessBasedOn === 'numReads') {
+                    lineWidth = totalReadCount;
+                } else if (this.config.thicknessBasedOn === 'numSamplesWithThisJunction') {
+                    if (numSamplesWithThisJunction !== undefined) {
+                        lineWidth = numSamplesWithThisJunction;
+                    }
+                }
+                lineWidth = 1 + Math.log(lineWidth + 1) / Math.log(12);
+            }
+
+            let bounceHeight;
+            if (this.config.bounceHeightBasedOn === undefined || this.config.bounceHeightBasedOn === 'random') {
+                // randomly but deterministically stagger topY coordinates to reduce overlap
+                bounceHeight = (feature.start + feature.end) % 7;
+            } else if (this.config.bounceHeightBasedOn === 'distance') {
+                bounceHeight = 6 * (feature.end - feature.start) / (junctionRenderingContext.referenceFrameEnd - junctionRenderingContext.referenceFrameStart);
+            } else if (this.config.bounceHeightBasedOn === 'thickness') {
+                bounceHeight = 2 * lineWidth;
+            }
+            topY += rowHeight * Math.max(7 - bounceHeight, 0) / 10;
+
+            let color;
+            if (feature.attributes.color) {
+                color = feature.attributes.color;  // Explicit setting
+            } else if (this.config.colorBy === undefined || this.config.colorBy === 'numUniqueReads') {
+                color = uniquelyMappedReadCount > this.config.colorByNumReadsThreshold ? 'blue' : '#AAAAAA';  // color gradient?
+            } else if (this.config.colorBy === 'numReads') {
+                color = totalReadCount > this.config.colorByNumReadsThreshold ? 'blue' : '#AAAAAA';
+            } else if (this.config.colorBy === 'isAnnotatedJunction') {
+                color = feature.attributes.annotated_junction === "true" ? '#b0b0ec' : 'orange';
+            } else if (this.config.colorBy === 'strand') {
+                color = feature.strand === "+" ? '#b0b0ec' : '#ecb0b0';
+            } else if (this.config.colorBy === 'motif') {
+                color = JUNCTION_MOTIF_PALETTE.getColor(feature.attributes.motif);
+            } else {
+                color = '#AAAAAA';
+            }
+
+            let label = "";
+            if (feature.attributes.label) {
+                label = feature.attributes.label.replace(/_/g, " ");
+            } else if (this.config.labelWith === undefined || this.config.labelWith === 'uniqueReadCount') {
+                //default label
+                label = uniquelyMappedReadCount;
+            } else if (this.config.labelWith === 'totalReadCount') {
+                label = totalReadCount;
+            } else if (this.config.labelWith === 'numSamplesWithThisJunction') {
+                if (numSamplesWithThisJunction !== undefined) {
+                    label = numSamplesWithThisJunction;
+                }
+            } else if (this.config.labelWith === 'percentSamplesWithThisJunction') {
+                if (feature.attributes.percent_samples_with_this_junction !== undefined) {
+                    label = feature.attributes.percent_samples_with_this_junction.toFixed(0) + '%';
+                }
+            } else if (this.config.labelWith === 'motif') {
+                if (feature.attributes.motif !== undefined) {
+                    label += feature.attributes.motif;
+                }
+            }
+
+            if (this.config.labelWithInParen === 'uniqueReadCount') {
+                label += ' (' + uniquelyMappedReadCount + ')';
+            } else if (this.config.labelWithInParen === 'totalReadCount') {
+                label += ' (' + totalReadCount + ')';
+            } else if (this.config.labelWithInParen === 'multiMappedReadCount') {
+                if (multiMappedReadCount > 0) {
+                    label += ' (+' + multiMappedReadCount + ')';
+                }
+            } else if (this.config.labelWithInParen === 'numSamplesWithThisJunction') {
+                if (numSamplesWithThisJunction !== undefined) {
+                    label += ' (' + numSamplesWithThisJunction + ')';
+                }
+            } else if (this.config.labelWithInParen === 'percentSamplesWithThisJunction') {
+                if (feature.attributes.percent_samples_with_this_junction !== undefined) {
+                    label += ' (' + feature.attributes.percent_samples_with_this_junction.toFixed(0) + '%)';
+                }
+            } else if (this.config.labelWithInParen === 'motif') {
+                if (feature.attributes.motif !== undefined) {
+                    label += ` ${feature.attributes.motif}`;
+                }
+            }
+
+            // data source: STAR splice junctions (eg. SJ.out.tab file converted to bed).
+            // .bed "name" field used to store unique + multi-mapped read counts, so:
+            // feature.score:  unique spanning read counts
+            // feature.name:   unique + multi-mapped spanning read counts
+            //example feature:  { chr: "chr17", start: 39662344, end: 39662803, name: "59", row: 0, score: 38, strand: "+"}
+            feature.isVisible = true;
+            ctx.beginPath();
+            ctx.moveTo(junctionLeftPx, bezierBottomY);
+            ctx.bezierCurveTo(bezierControlLeftPx, topY, bezierControlRightPx, topY, junctionRightPx, bezierBottomY);
+
+            ctx.lineWidth = lineWidth;
+            ctx.strokeStyle = color;
+            ctx.stroke();
+
+            const drawArrowhead = (ctx, x, y, size) => {
+                //TODO draw better arrow heads: https://stackoverflow.com/questions/21052972/curved-thick-arrows-on-canvas
+                ctx.beginPath();
+                ctx.moveTo(x, y);
+                ctx.lineTo(x - size / 2, y - size);
+                ctx.lineTo(x + size / 2, y - size);
+                ctx.lineTo(x, y);
+                ctx.closePath();
+                ctx.fill();
+            };
+
+            if (feature.attributes.left_shape || feature.attributes.right_shape) {
+                ctx.fillStyle = color;
+                const arrowSize = ctx.lineWidth > 2 ? 10 : 7;
+                if (feature.attributes.left_shape) {
+                    drawArrowhead(ctx, junctionLeftPx, bezierBottomY, arrowSize);
+                }
+                if (feature.attributes.right_shape) {
+                    drawArrowhead(ctx, junctionRightPx, bezierBottomY, arrowSize);
+                }
+            }
+
+            ctx.fillText(label, junctionMiddlePx - ctx.measureText(label).width / 2, (7 * topY + cy) / 8);
+        }
+
+        clickedFeatures(clickState) {
+
+            const allFeatures = super.clickedFeatures(clickState);
+
+            return allFeatures.filter(function (feature) {
+                return (feature.isVisible && feature.attributes)
+            })
+        }
+
+        /**
+         * Return "popup data" for feature @ genomic location.  Data is an array of key-value pairs
+         */
+        popupData(clickState, features) {
+
+            if (features === undefined) features = this.clickedFeatures(clickState);
+            const genomicLocation = clickState.genomicLocation;
+
+            const data = [];
+            for (let feature of features) {
+
+                const featureData = (typeof feature.popupData === "function") ?
+                    feature.popupData(genomicLocation) :
+                    this.extractPopupData(feature._f || feature, this.getGenomeId());
+
+                if (featureData) {
+                    if (data.length > 0) {
+                        data.push("<hr/><hr/>");
+                    }
+
+                    Array.prototype.push.apply(data, featureData);
+                }
+            }
+
+            return data
+        }
+
+        /**
+         * Called when the track is removed.  Do any needed cleanup here
+         */
+        dispose() {
+            this.trackView = undefined;
+        }
+    }
+
+    class RemoteFile {
+
+        constructor(args) {
+            this.config = args;
+            this.url = mapUrl(args.path || args.url);
+        }
+
+
+        async read(position, length) {
+
+            //console.log(`${position} - ${position + length} (${length})`)
+
+            const headers = this.config.headers || {};
+
+            if (position !== undefined && length) {
+                const rangeString = "bytes=" + position + "-" + (position + length - 1);
+                headers['Range'] = rangeString;
+            }
+
+            let url = this.url.slice();    // slice => copy
+            if (this.config.oauthToken) {
+                const token = resolveToken(this.config.oauthToken);
+                headers['Authorization'] = `Bearer ${token}`;
+            }
+
+            if (this.config.apiKey) {
+                url = addParameter(url, "key", this.config.apiKey);
+            }
+
+            const response = await fetch(url, {
+                method: 'GET',
+                headers: headers,
+                redirect: 'follow',
+                mode: 'cors',
+            });
+
+            const status = response.status;
+
+            if (status >= 400) {
+                const err = Error(response.statusText);
+                err.code = status;
+                throw err
+            } else {
+                return response.arrayBuffer()
+            }
+
+            /**
+             * token can be a string, a function that returns a string, or a function that returns a Promise for a string
+             * @param token
+             * @returns {Promise<*>}
+             */
+            async function resolveToken(token) {
+                if (typeof token === 'function') {
+                    return await Promise.resolve(token())    // Normalize the result to a promise, since we don't know what the function returns
+                } else {
+                    return token
+                }
+            }
+
+        }
+    }
+
+
+    function mapUrl(url) {
+
+        if (url.includes("//www.dropbox.com")) {
+            return url.replace("//www.dropbox.com", "//dl.dropboxusercontent.com")
+        } else if (url.startsWith("ftp://ftp.ncbi.nlm.nih.gov")) {
+            return url.replace("ftp://", "https://")
+        } else {
+            return url
+        }
+    }
+
+
+    function addParameter(url, name, value) {
+        const paramSeparator = url.includes("?") ? "&" : "?";
+        return url + paramSeparator + name + "=" + value
+    }
+
+    class BufferedFile {
+
+        constructor(args) {
+            this.file = args.file;
+            this.fetchSize = args.fetchSize || 16000;
+            this.maxSize = args.maxSize || 1000000;
+            this.buffers = [];
+        }
+
+        async read(position, length) {
+
+
+            let overlappingBuffers = this.buffers.filter( b => b.overlaps(position, position + length));
+
+            // See if any buffers completely contain request, if so we're done
+            for(let buffer of overlappingBuffers) {
+                if(buffer.contains(position, position + length)) {
+                  return buffer.slice(position, position + length)
+                }
+            }
+
+
+            if(overlappingBuffers.length === 0) {
+
+                // No overlap with any existing buffer
+                let size = Math.max(length, this.fetchSize);
+
+                // Find index of first buffer to the right, if any, to potentially limit size
+                this.buffers.sort((a, b) => a.start - b.start);
+                const idx = binarySearch(this.buffers, (b) => b.start > position, 0);
+                if(idx < this.buffers.length) {
+                    size = Math.min(size, this.buffers[idx].start - position);
+                }
+
+                const bufferStart = position;
+                const bufferData = await this.file.read(bufferStart, size);
+                const buffer = new Buffer$1(bufferStart, bufferData);
+                this.addBuffer(buffer);
+
+                return buffer.slice(position, position + length)
+            } else {
+
+                // console.log("Cache hit")
+                // Some overlap.   Fill gaps
+                overlappingBuffers.sort((a, b) => a.start - b.start);
+                const allBuffers = [];
+                let currentEnd = position;
+                for (let ob of overlappingBuffers) {
+                    if (currentEnd < ob.start) {
+                        const bufferStart = currentEnd;
+                        const bufferSize = ob.start - currentEnd;
+                        const bufferData = await this.file.read(bufferStart, bufferSize);
+                        const buffer = new Buffer$1(bufferStart, bufferData);
+                        allBuffers.push(buffer);
+                    }
+                    allBuffers.push(ob);
+                    currentEnd = ob.end;
+                }
+
+                // Check end
+                const requestedEnd = position + length;
+                if (requestedEnd > currentEnd) {
+                    const bufferStart = currentEnd;
+                    const bufferSize = requestedEnd - bufferStart;
+                    const bufferData = await this.file.read(bufferStart, bufferSize);
+                    const buffer = new Buffer$1(bufferStart, bufferData);
+                    allBuffers.push(buffer);
+                }
+
+                const newStart = allBuffers[0].start;
+                const newArrayBuffer = concatArrayBuffers(allBuffers.map(b => b.buffer));
+                const newBuffer = new Buffer$1(newStart, newArrayBuffer);
+
+                // Replace the overlapping buffers with the new composite one
+                const tmp = new Set(overlappingBuffers);
+                this.buffers = this.buffers.filter(b => !tmp.has(b));
+                this.addBuffer(newBuffer);
+
+                return newBuffer.slice(position, position + length)
+            }
+
+        }
+
+        addBuffer(buffer) {
+
+            const size = this.buffers.reduce((a,b) => a + b.size, 0) + buffer.size;
+            if(size > this.maxSize) {
+                // console.log(`max buffer size exceeded`)
+                const overage = size - this.maxSize;
+                this.buffers.sort((a,b) => a.creationTime - b.creationTime);
+                let sum = 0;
+                let i;
+                for(i=0; i<this.buffers.length; i++) {
+                    sum += this.buffers[i].size;
+                    if(sum > overage) {
+                        break
+                    }
+                }
+                // console.log('removing buffers')
+                // for(let j=0; j<i; j++) console.log(`  ${this.buffers[j].toString()}`)
+                this.buffers = (i < this.buffers.length - 1)  ? this.buffers.slice(i)  : [];
+            }
+
+            if(buffer.size <= this.maxSize) {
+                this.buffers.push(buffer);
+            }
+        }
+
+
+
+    }
+
+    class Buffer$1 {
+
+        constructor(bufferStart, buffer) {
+            this.creationTime = Date.now();
+            this.start = bufferStart;
+            this.buffer = buffer;
+        }
+
+        slice(start, end) {
+            if(start < this.start || end - start > this.buffer.byteLength) {
+                throw Error("buffer bounds error")
+            }
+            return this.buffer.slice(start - this.start, end - this.start)
+        }
+
+        get end() {
+            return this.start + this.buffer.byteLength
+        }
+
+        get size() {
+            return this.buffer.byteLength
+        }
+
+        contains(start, end) {
+            return start >= this.start && end <= this.end
+        }
+
+        overlaps(start, end) {
+            return (start > this.start && start < this.end) || (end > this.start && end < this.end)
+        }
+
+        toString() {
+            return `Buffer ${this.creationTime}   ${this.start} - ${this.end}`
+        }
+
+    }
+
+    /**
+     * concatenates 2 array buffers.
+     * Credit: https://gist.github.com/72lions/4528834
+     *
+     * @private
+     * @param {ArrayBuffers} buffer1 The first buffer.
+     * @param {ArrayBuffers} buffer2 The second buffer.
+     * @return {ArrayBuffers} The new ArrayBuffer created out of the two.
+     */
+    function concatArrayBuffers(buffers) {
+        const size = buffers.reduce((a,b) => a + b.byteLength, 0);
+        const tmp = new Uint8Array(size);
+        let offset = 0;
+        for(let b of buffers) {
+            tmp.set(new Uint8Array(b), offset);
+            offset += b.byteLength;
+        }
+        return tmp.buffer
+    }
+
+    /**
+     * Return 0 <= i <= array.length such that !pred(array[i - 1]) && pred(array[i]).
+     *
+     * returns an index 0 ≤ i ≤ array.length such that the given predicate is false for array[i - 1] and true for array[i]* *
+     */
+    function binarySearch(array, pred, min) {
+        let lo = min - 1, hi = array.length;
+        while (1 + lo < hi) {
+            const mi = lo + ((hi - lo) >> 1);
+            if (pred(array[mi])) {
+                hi = mi;
+            } else {
+                lo = mi;
+            }
+        }
+        return hi
+    }
+
+    class BlobFile {
+
+        constructor(blob) {
+            this.file = blob;
+        }
+
+        async read(position, length) {
+
+            if(length === 0) {
+                return new ArrayBuffer()
+            }
+
+            const blob = (position != undefined && length) ?
+                this.file.slice(position, position + length) :
+                this.file;
+
+            return blob.arrayBuffer()
+        }
+    }
+
+    // esm/core.js
+    async function _unpack_struct_from_async(structure, async_buf, offset = 0) {
+      var output = /* @__PURE__ */ new Map();
+      for (let [key, fmt] of structure.entries()) {
+        let value = await struct.unpack_from_async("<" + fmt, async_buf, offset);
+        offset += struct.calcsize(fmt);
+        if (value.length == 1) {
+          value = value[0];
+        }
+        output.set(key, value);
+      }
+      return output;
+    }
+    function _unpack_struct_from(structure, buf, offset = 0) {
+      var output = /* @__PURE__ */ new Map();
+      for (let [key, fmt] of structure.entries()) {
+        let value = struct.unpack_from("<" + fmt, buf, offset);
+        offset += struct.calcsize(fmt);
+        if (value.length == 1) {
+          value = value[0];
+        }
+        output.set(key, value);
+      }
+      return output;
+    }
+    function assert(thing) {
+      if (!thing) {
+        thing();
+      }
+    }
+    function _structure_size(structure) {
+      var fmt = "<" + Array.from(structure.values()).join("");
+      return struct.calcsize(fmt);
+    }
+    function _padded_size(size, padding_multiple = 8) {
+      return Math.ceil(size / padding_multiple) * padding_multiple;
+    }
+    var dtype_to_format = {
+      "u": "Uint",
+      "i": "Int",
+      "f": "Float"
+    };
+    function dtype_getter(dtype_str) {
+      var big_endian = struct._is_big_endian(dtype_str);
+      var getter, nbytes;
+      if (/S/.test(dtype_str)) {
+        getter = "getString";
+        nbytes = ((dtype_str.match(/S(\d*)/) || [])[1] || 1) | 0;
+      } else {
+        let [_, fstr, bytestr] = dtype_str.match(/[<>=!@]?(i|u|f)(\d*)/);
+        nbytes = parseInt(bytestr || 4, 10);
+        let nbits = nbytes * 8;
+        getter = "get" + dtype_to_format[fstr] + nbits.toFixed();
+      }
+      return [getter, big_endian, nbytes];
+    }
+    var Struct = class {
+      constructor() {
+        this.big_endian = isBigEndian();
+        this.getters = {
+          "s": "getUint8",
+          "b": "getInt8",
+          "B": "getUint8",
+          "h": "getInt16",
+          "H": "getUint16",
+          "i": "getInt32",
+          "I": "getUint32",
+          "l": "getInt32",
+          "L": "getUint32",
+          "q": "getInt64",
+          "Q": "getUint64",
+          "f": "getFloat32",
+          "d": "getFloat64"
+        };
+        this.byte_lengths = {
+          "s": 1,
+          "b": 1,
+          "B": 1,
+          "h": 2,
+          "H": 2,
+          "i": 4,
+          "I": 4,
+          "l": 4,
+          "L": 4,
+          "q": 8,
+          "Q": 8,
+          "f": 4,
+          "d": 8
+        };
+        let all_formats = Object.keys(this.byte_lengths).join("");
+        this.fmt_size_regex = "(\\d*)([" + all_formats + "])";
+      }
+      calcsize(fmt) {
+        var size = 0;
+        var match;
+        var regex = new RegExp(this.fmt_size_regex, "g");
+        while ((match = regex.exec(fmt)) !== null) {
+          let n = parseInt(match[1] || 1, 10);
+          let f = match[2];
+          let subsize = this.byte_lengths[f];
+          size += n * subsize;
+        }
+        return size;
+      }
+      _is_big_endian(fmt) {
+        var big_endian;
+        if (/^</.test(fmt)) {
+          big_endian = false;
+        } else if (/^(!|>)/.test(fmt)) {
+          big_endian = true;
+        } else {
+          big_endian = this.big_endian;
+        }
+        return big_endian;
+      }
+      async unpack_from_async(fmt, async_buf, offset) {
+        var offset = Number(offset || 0);
+        const total_size = this.calcsize(fmt);
+        const local_buffer = await async_buf.slice(offset, offset + total_size);
+        let local_offset = 0;
+        var view = new DataView64(local_buffer);
+        var output = [];
+        var big_endian = this._is_big_endian(fmt);
+        var match;
+        var regex = new RegExp(this.fmt_size_regex, "g");
+        while ((match = regex.exec(fmt)) !== null) {
+          let n = parseInt(match[1] || 1, 10);
+          let f = match[2];
+          let getter = this.getters[f];
+          let size = this.byte_lengths[f];
+          if (f == "s") {
+            output.push(new TextDecoder().decode(local_buffer.slice(local_offset, local_offset + n)));
+            local_offset += n;
+          } else {
+            for (var i = 0; i < n; i++) {
+              output.push(view[getter](local_offset, !big_endian));
+              local_offset += size;
+            }
+          }
+        }
+        return output;
+      }
+      unpack_from(fmt, buffer, offset) {
+        var offset = Number(offset || 0);
+        const total_size = this.calcsize(fmt);
+        const local_buffer = buffer.slice(offset, offset + total_size);
+        let local_offset = 0;
+        var view = new DataView64(local_buffer);
+        var output = [];
+        var big_endian = this._is_big_endian(fmt);
+        var match;
+        var regex = new RegExp(this.fmt_size_regex, "g");
+        while ((match = regex.exec(fmt)) !== null) {
+          let n = parseInt(match[1] || 1, 10);
+          let f = match[2];
+          let getter = this.getters[f];
+          let size = this.byte_lengths[f];
+          if (f == "s") {
+            output.push(new TextDecoder().decode(local_buffer.slice(local_offset, local_offset + n)));
+            local_offset += n;
+          } else {
+            for (var i = 0; i < n; i++) {
+              output.push(view[getter](local_offset, !big_endian));
+              local_offset += size;
+            }
+          }
+        }
+        return output;
+      }
+    };
+    var struct = new Struct();
+    function isBigEndian() {
+      const array = new Uint8Array(4);
+      const view = new Uint32Array(array.buffer);
+      return !((view[0] = 1) & array[0]);
+    }
+    var DataView64 = class extends DataView {
+      getUint64(byteOffset, littleEndian) {
+        const left = BigInt(this.getUint32(byteOffset, littleEndian));
+        const right = BigInt(this.getUint32(byteOffset + 4, littleEndian));
+        let combined = littleEndian ? left + (right << 32n) : (left << 32n) + right;
+        return Number(combined);
+      }
+      getInt64(byteOffset, littleEndian) {
+        var low, high;
+        if (littleEndian) {
+          low = this.getUint32(byteOffset, true);
+          high = this.getInt32(byteOffset + 4, true);
+        } else {
+          high = this.getInt32(byteOffset, false);
+          low = this.getUint32(byteOffset + 4, false);
+        }
+        let combined = BigInt(low) + (BigInt(high) << 32n);
+        return Number(combined);
+      }
+      getString(byteOffset, littleEndian, length) {
+        const str_buffer = this.buffer.slice(byteOffset, byteOffset + length);
+        const decoder = new TextDecoder();
+        return decoder.decode(str_buffer);
+      }
+      getVLENStruct(byteOffset, littleEndian, length) {
+        let item_size = this.getUint32(byteOffset, littleEndian);
+        let collection_address = this.getUint64(byteOffset + 4, littleEndian);
+        let object_index = this.getUint32(byteOffset + 12, littleEndian);
+        return [item_size, collection_address, object_index];
+      }
+    };
+    function bitSize(integer) {
+      return integer.toString(2).length;
+    }
+    function _unpack_integer(nbytes, buf, offset = 0, littleEndian = true) {
+      const local_buffer = buf.slice(offset, offset + nbytes);
+      let bytes = new Uint8Array(local_buffer);
+      if (!littleEndian) {
+        bytes.reverse();
+      }
+      let integer = bytes.reduce((accumulator, currentValue, index) => accumulator + (currentValue << index * 8), 0);
+      return integer;
+    }
+
+    // esm/datatype-msg.js
+    var DatatypeMessage = class {
+      constructor(buf, offset) {
+        this.buf = buf;
+        this.offset = offset;
+        this.dtype = this.determine_dtype();
+      }
+      async determine_dtype() {
+        let datatype_msg = await _unpack_struct_from_async(DATATYPE_MSG, this.buf, this.offset);
+        this.offset += DATATYPE_MSG_SIZE;
+        let datatype_class = datatype_msg.get("class_and_version") & 15;
+        if (datatype_class == DATATYPE_FIXED_POINT) {
+          return this._determine_dtype_fixed_point(datatype_msg);
+        } else if (datatype_class == DATATYPE_FLOATING_POINT) {
+          return this._determine_dtype_floating_point(datatype_msg);
+        } else if (datatype_class == DATATYPE_TIME) {
+          throw "Time datatype class not supported.";
+        } else if (datatype_class == DATATYPE_STRING) {
+          return this._determine_dtype_string(datatype_msg);
+        } else if (datatype_class == DATATYPE_BITFIELD) {
+          throw "Bitfield datatype class not supported.";
+        } else if (datatype_class == DATATYPE_OPAQUE) {
+          return {
+            datatype_class: DATATYPE_OPAQUE,
+            size: datatype_msg.get("size")
+          };
+        } else if (datatype_class == DATATYPE_COMPOUND) {
+          return this._determine_dtype_compound(datatype_msg);
+        } else if (datatype_class == DATATYPE_REFERENCE) {
+          return ["REFERENCE", datatype_msg.get("size")];
+        } else if (datatype_class == DATATYPE_ENUMERATED) {
+          return this.determine_dtype();
+        } else if (datatype_class == DATATYPE_ARRAY) {
+          throw "Array datatype class not supported.";
+        } else if (datatype_class == DATATYPE_VARIABLE_LENGTH) {
+          let vlen_type = this._determine_dtype_vlen(datatype_msg);
+          if (vlen_type[0] == "VLEN_SEQUENCE") {
+            let base_type = this.determine_dtype();
+            vlen_type = ["VLEN_SEQUENCE", base_type];
+          }
+          return vlen_type;
+        } else {
+          throw "Invalid datatype class " + datatype_class;
+        }
+      }
+      _determine_dtype_fixed_point(datatype_msg) {
+        let length_in_bytes = datatype_msg.get("size");
+        if (![1, 2, 4, 8].includes(length_in_bytes)) {
+          throw "Unsupported datatype size";
+        }
+        let signed = datatype_msg.get("class_bit_field_0") & 8;
+        var dtype_char;
+        if (signed > 0) {
+          dtype_char = "i";
+        } else {
+          dtype_char = "u";
+        }
+        let byte_order = datatype_msg.get("class_bit_field_0") & 1;
+        var byte_order_char;
+        if (byte_order == 0) {
+          byte_order_char = "<";
+        } else {
+          byte_order_char = ">";
+        }
+        this.offset += 4;
+        return byte_order_char + dtype_char + length_in_bytes.toFixed();
+      }
+      _determine_dtype_floating_point(datatype_msg) {
+        let length_in_bytes = datatype_msg.get("size");
+        if (![1, 2, 4, 8].includes(length_in_bytes)) {
+          throw "Unsupported datatype size";
+        }
+        let dtype_char = "f";
+        let byte_order = datatype_msg.get("class_bit_field_0") & 1;
+        var byte_order_char;
+        if (byte_order == 0) {
+          byte_order_char = "<";
+        } else {
+          byte_order_char = ">";
+        }
+        this.offset += 12;
+        return byte_order_char + dtype_char + length_in_bytes.toFixed();
+      }
+      _determine_dtype_string(datatype_msg) {
+        return "S" + datatype_msg.get("size").toFixed();
+      }
+      _determine_dtype_vlen(datatype_msg) {
+        let vlen_type = datatype_msg.get("class_bit_field_0") & 1;
+        if (vlen_type != 1) {
+          return ["VLEN_SEQUENCE", 0, 0];
+        }
+        let padding_type = datatype_msg.get("class_bit_field_0") >> 4;
+        let character_set = datatype_msg.get("class_bit_field_1") & 1;
+        return ["VLEN_STRING", padding_type, character_set];
+      }
+      _determine_dtype_compound(datatype_msg) {
+        throw "Compound type not yet implemented!";
+      }
+    };
+    var DATATYPE_MSG = /* @__PURE__ */ new Map([
+      ["class_and_version", "B"],
+      ["class_bit_field_0", "B"],
+      ["class_bit_field_1", "B"],
+      ["class_bit_field_2", "B"],
+      ["size", "I"]
+    ]);
+    var DATATYPE_MSG_SIZE = _structure_size(DATATYPE_MSG);
+    var COMPOUND_PROP_DESC_V1 = /* @__PURE__ */ new Map([
+      ["offset", "I"],
+      ["dimensionality", "B"],
+      ["reserved_0", "B"],
+      ["reserved_1", "B"],
+      ["reserved_2", "B"],
+      ["permutation", "I"],
+      ["reserved_3", "I"],
+      ["dim_size_1", "I"],
+      ["dim_size_2", "I"],
+      ["dim_size_3", "I"],
+      ["dim_size_4", "I"]
+    ]);
+    _structure_size(COMPOUND_PROP_DESC_V1);
+    var DATATYPE_FIXED_POINT = 0;
+    var DATATYPE_FLOATING_POINT = 1;
+    var DATATYPE_TIME = 2;
+    var DATATYPE_STRING = 3;
+    var DATATYPE_BITFIELD = 4;
+    var DATATYPE_OPAQUE = 5;
+    var DATATYPE_COMPOUND = 6;
+    var DATATYPE_REFERENCE = 7;
+    var DATATYPE_ENUMERATED = 8;
+    var DATATYPE_VARIABLE_LENGTH = 9;
+    var DATATYPE_ARRAY = 10;
+    function zero$1(buf) {
+      let len = buf.length;
+      while (--len >= 0) {
+        buf[len] = 0;
+      }
+    }
+    var MIN_MATCH$1 = 3;
+    var MAX_MATCH$1 = 258;
+    var LENGTH_CODES$1 = 29;
+    var LITERALS$1 = 256;
+    var L_CODES$1 = LITERALS$1 + 1 + LENGTH_CODES$1;
+    var D_CODES$1 = 30;
+    var DIST_CODE_LEN = 512;
+    var static_ltree = new Array((L_CODES$1 + 2) * 2);
+    zero$1(static_ltree);
+    var static_dtree = new Array(D_CODES$1 * 2);
+    zero$1(static_dtree);
+    var _dist_code = new Array(DIST_CODE_LEN);
+    zero$1(_dist_code);
+    var _length_code = new Array(MAX_MATCH$1 - MIN_MATCH$1 + 1);
+    zero$1(_length_code);
+    var base_length = new Array(LENGTH_CODES$1);
+    zero$1(base_length);
+    var base_dist = new Array(D_CODES$1);
+    zero$1(base_dist);
+    var adler32 = (adler, buf, len, pos) => {
+      let s1 = adler & 65535 | 0, s2 = adler >>> 16 & 65535 | 0, n = 0;
+      while (len !== 0) {
+        n = len > 2e3 ? 2e3 : len;
+        len -= n;
+        do {
+          s1 = s1 + buf[pos++] | 0;
+          s2 = s2 + s1 | 0;
+        } while (--n);
+        s1 %= 65521;
+        s2 %= 65521;
+      }
+      return s1 | s2 << 16 | 0;
+    };
+    var adler32_1 = adler32;
+    var makeTable = () => {
+      let c, table = [];
+      for (var n = 0; n < 256; n++) {
+        c = n;
+        for (var k = 0; k < 8; k++) {
+          c = c & 1 ? 3988292384 ^ c >>> 1 : c >>> 1;
+        }
+        table[n] = c;
+      }
+      return table;
+    };
+    var crcTable = new Uint32Array(makeTable());
+    var crc32 = (crc, buf, len, pos) => {
+      const t = crcTable;
+      const end = pos + len;
+      crc ^= -1;
+      for (let i = pos; i < end; i++) {
+        crc = crc >>> 8 ^ t[(crc ^ buf[i]) & 255];
+      }
+      return crc ^ -1;
+    };
+    var crc32_1 = crc32;
+    var messages = {
+      2: "need dictionary",
+      1: "stream end",
+      0: "",
+      "-1": "file error",
+      "-2": "stream error",
+      "-3": "data error",
+      "-4": "insufficient memory",
+      "-5": "buffer error",
+      "-6": "incompatible version"
+    };
+    var constants$2 = {
+      Z_NO_FLUSH: 0,
+      Z_PARTIAL_FLUSH: 1,
+      Z_SYNC_FLUSH: 2,
+      Z_FULL_FLUSH: 3,
+      Z_FINISH: 4,
+      Z_BLOCK: 5,
+      Z_TREES: 6,
+      Z_OK: 0,
+      Z_STREAM_END: 1,
+      Z_NEED_DICT: 2,
+      Z_ERRNO: -1,
+      Z_STREAM_ERROR: -2,
+      Z_DATA_ERROR: -3,
+      Z_MEM_ERROR: -4,
+      Z_BUF_ERROR: -5,
+      Z_NO_COMPRESSION: 0,
+      Z_BEST_SPEED: 1,
+      Z_BEST_COMPRESSION: 9,
+      Z_DEFAULT_COMPRESSION: -1,
+      Z_FILTERED: 1,
+      Z_HUFFMAN_ONLY: 2,
+      Z_RLE: 3,
+      Z_FIXED: 4,
+      Z_DEFAULT_STRATEGY: 0,
+      Z_BINARY: 0,
+      Z_TEXT: 1,
+      Z_UNKNOWN: 2,
+      Z_DEFLATED: 8
+    };
+    var _has = (obj, key) => {
+      return Object.prototype.hasOwnProperty.call(obj, key);
+    };
+    var assign = function(obj) {
+      const sources = Array.prototype.slice.call(arguments, 1);
+      while (sources.length) {
+        const source = sources.shift();
+        if (!source) {
+          continue;
+        }
+        if (typeof source !== "object") {
+          throw new TypeError(source + "must be non-object");
+        }
+        for (const p in source) {
+          if (_has(source, p)) {
+            obj[p] = source[p];
+          }
+        }
+      }
+      return obj;
+    };
+    var flattenChunks = (chunks) => {
+      let len = 0;
+      for (let i = 0, l = chunks.length; i < l; i++) {
+        len += chunks[i].length;
+      }
+      const result = new Uint8Array(len);
+      for (let i = 0, pos = 0, l = chunks.length; i < l; i++) {
+        let chunk = chunks[i];
+        result.set(chunk, pos);
+        pos += chunk.length;
+      }
+      return result;
+    };
+    var common = {
+      assign,
+      flattenChunks
+    };
+    var STR_APPLY_UIA_OK = true;
+    try {
+      String.fromCharCode.apply(null, new Uint8Array(1));
+    } catch (__) {
+      STR_APPLY_UIA_OK = false;
+    }
+    var _utf8len = new Uint8Array(256);
+    for (let q = 0; q < 256; q++) {
+      _utf8len[q] = q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1;
+    }
+    _utf8len[254] = _utf8len[254] = 1;
+    var string2buf = (str) => {
+      if (typeof TextEncoder === "function" && TextEncoder.prototype.encode) {
+        return new TextEncoder().encode(str);
+      }
+      let buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;
+      for (m_pos = 0; m_pos < str_len; m_pos++) {
+        c = str.charCodeAt(m_pos);
+        if ((c & 64512) === 55296 && m_pos + 1 < str_len) {
+          c2 = str.charCodeAt(m_pos + 1);
+          if ((c2 & 64512) === 56320) {
+            c = 65536 + (c - 55296 << 10) + (c2 - 56320);
+            m_pos++;
+          }
+        }
+        buf_len += c < 128 ? 1 : c < 2048 ? 2 : c < 65536 ? 3 : 4;
+      }
+      buf = new Uint8Array(buf_len);
+      for (i = 0, m_pos = 0; i < buf_len; m_pos++) {
+        c = str.charCodeAt(m_pos);
+        if ((c & 64512) === 55296 && m_pos + 1 < str_len) {
+          c2 = str.charCodeAt(m_pos + 1);
+          if ((c2 & 64512) === 56320) {
+            c = 65536 + (c - 55296 << 10) + (c2 - 56320);
+            m_pos++;
+          }
+        }
+        if (c < 128) {
+          buf[i++] = c;
+        } else if (c < 2048) {
+          buf[i++] = 192 | c >>> 6;
+          buf[i++] = 128 | c & 63;
+        } else if (c < 65536) {
+          buf[i++] = 224 | c >>> 12;
+          buf[i++] = 128 | c >>> 6 & 63;
+          buf[i++] = 128 | c & 63;
+        } else {
+          buf[i++] = 240 | c >>> 18;
+          buf[i++] = 128 | c >>> 12 & 63;
+          buf[i++] = 128 | c >>> 6 & 63;
+          buf[i++] = 128 | c & 63;
+        }
+      }
+      return buf;
+    };
+    var buf2binstring = (buf, len) => {
+      if (len < 65534) {
+        if (buf.subarray && STR_APPLY_UIA_OK) {
+          return String.fromCharCode.apply(null, buf.length === len ? buf : buf.subarray(0, len));
+        }
+      }
+      let result = "";
+      for (let i = 0; i < len; i++) {
+        result += String.fromCharCode(buf[i]);
+      }
+      return result;
+    };
+    var buf2string = (buf, max) => {
+      const len = max || buf.length;
+      if (typeof TextDecoder === "function" && TextDecoder.prototype.decode) {
+        return new TextDecoder().decode(buf.subarray(0, max));
+      }
+      let i, out;
+      const utf16buf = new Array(len * 2);
+      for (out = 0, i = 0; i < len; ) {
+        let c = buf[i++];
+        if (c < 128) {
+          utf16buf[out++] = c;
+          continue;
+        }
+        let c_len = _utf8len[c];
+        if (c_len > 4) {
+          utf16buf[out++] = 65533;
+          i += c_len - 1;
+          continue;
+        }
+        c &= c_len === 2 ? 31 : c_len === 3 ? 15 : 7;
+        while (c_len > 1 && i < len) {
+          c = c << 6 | buf[i++] & 63;
+          c_len--;
+        }
+        if (c_len > 1) {
+          utf16buf[out++] = 65533;
+          continue;
+        }
+        if (c < 65536) {
+          utf16buf[out++] = c;
+        } else {
+          c -= 65536;
+          utf16buf[out++] = 55296 | c >> 10 & 1023;
+          utf16buf[out++] = 56320 | c & 1023;
+        }
+      }
+      return buf2binstring(utf16buf, out);
+    };
+    var utf8border = (buf, max) => {
+      max = max || buf.length;
+      if (max > buf.length) {
+        max = buf.length;
+      }
+      let pos = max - 1;
+      while (pos >= 0 && (buf[pos] & 192) === 128) {
+        pos--;
+      }
+      if (pos < 0) {
+        return max;
+      }
+      if (pos === 0) {
+        return max;
+      }
+      return pos + _utf8len[buf[pos]] > max ? pos : max;
+    };
+    var strings = {
+      string2buf,
+      buf2string,
+      utf8border
+    };
+    function ZStream() {
+      this.input = null;
+      this.next_in = 0;
+      this.avail_in = 0;
+      this.total_in = 0;
+      this.output = null;
+      this.next_out = 0;
+      this.avail_out = 0;
+      this.total_out = 0;
+      this.msg = "";
+      this.state = null;
+      this.data_type = 2;
+      this.adler = 0;
+    }
+    var zstream = ZStream;
+    var BAD$1 = 30;
+    var TYPE$1 = 12;
+    var inffast = function inflate_fast(strm, start) {
+      let _in;
+      let last;
+      let _out;
+      let beg;
+      let end;
+      let dmax;
+      let wsize;
+      let whave;
+      let wnext;
+      let s_window;
+      let hold;
+      let bits;
+      let lcode;
+      let dcode;
+      let lmask;
+      let dmask;
+      let here;
+      let op;
+      let len;
+      let dist;
+      let from;
+      let from_source;
+      let input, output;
+      const state = strm.state;
+      _in = strm.next_in;
+      input = strm.input;
+      last = _in + (strm.avail_in - 5);
+      _out = strm.next_out;
+      output = strm.output;
+      beg = _out - (start - strm.avail_out);
+      end = _out + (strm.avail_out - 257);
+      dmax = state.dmax;
+      wsize = state.wsize;
+      whave = state.whave;
+      wnext = state.wnext;
+      s_window = state.window;
+      hold = state.hold;
+      bits = state.bits;
+      lcode = state.lencode;
+      dcode = state.distcode;
+      lmask = (1 << state.lenbits) - 1;
+      dmask = (1 << state.distbits) - 1;
+      top:
+        do {
+          if (bits < 15) {
+            hold += input[_in++] << bits;
+            bits += 8;
+            hold += input[_in++] << bits;
+            bits += 8;
+          }
+          here = lcode[hold & lmask];
+          dolen:
+            for (; ; ) {
+              op = here >>> 24;
+              hold >>>= op;
+              bits -= op;
+              op = here >>> 16 & 255;
+              if (op === 0) {
+                output[_out++] = here & 65535;
+              } else if (op & 16) {
+                len = here & 65535;
+                op &= 15;
+                if (op) {
+                  if (bits < op) {
+                    hold += input[_in++] << bits;
+                    bits += 8;
+                  }
+                  len += hold & (1 << op) - 1;
+                  hold >>>= op;
+                  bits -= op;
+                }
+                if (bits < 15) {
+                  hold += input[_in++] << bits;
+                  bits += 8;
+                  hold += input[_in++] << bits;
+                  bits += 8;
+                }
+                here = dcode[hold & dmask];
+                dodist:
+                  for (; ; ) {
+                    op = here >>> 24;
+                    hold >>>= op;
+                    bits -= op;
+                    op = here >>> 16 & 255;
+                    if (op & 16) {
+                      dist = here & 65535;
+                      op &= 15;
+                      if (bits < op) {
+                        hold += input[_in++] << bits;
+                        bits += 8;
+                        if (bits < op) {
+                          hold += input[_in++] << bits;
+                          bits += 8;
+                        }
+                      }
+                      dist += hold & (1 << op) - 1;
+                      if (dist > dmax) {
+                        strm.msg = "invalid distance too far back";
+                        state.mode = BAD$1;
+                        break top;
+                      }
+                      hold >>>= op;
+                      bits -= op;
+                      op = _out - beg;
+                      if (dist > op) {
+                        op = dist - op;
+                        if (op > whave) {
+                          if (state.sane) {
+                            strm.msg = "invalid distance too far back";
+                            state.mode = BAD$1;
+                            break top;
+                          }
+                        }
+                        from = 0;
+                        from_source = s_window;
+                        if (wnext === 0) {
+                          from += wsize - op;
+                          if (op < len) {
+                            len -= op;
+                            do {
+                              output[_out++] = s_window[from++];
+                            } while (--op);
+                            from = _out - dist;
+                            from_source = output;
+                          }
+                        } else if (wnext < op) {
+                          from += wsize + wnext - op;
+                          op -= wnext;
+                          if (op < len) {
+                            len -= op;
+                            do {
+                              output[_out++] = s_window[from++];
+                            } while (--op);
+                            from = 0;
+                            if (wnext < len) {
+                              op = wnext;
+                              len -= op;
+                              do {
+                                output[_out++] = s_window[from++];
+                              } while (--op);
+                              from = _out - dist;
+                              from_source = output;
+                            }
+                          }
+                        } else {
+                          from += wnext - op;
+                          if (op < len) {
+                            len -= op;
+                            do {
+                              output[_out++] = s_window[from++];
+                            } while (--op);
+                            from = _out - dist;
+                            from_source = output;
+                          }
+                        }
+                        while (len > 2) {
+                          output[_out++] = from_source[from++];
+                          output[_out++] = from_source[from++];
+                          output[_out++] = from_source[from++];
+                          len -= 3;
+                        }
+                        if (len) {
+                          output[_out++] = from_source[from++];
+                          if (len > 1) {
+                            output[_out++] = from_source[from++];
+                          }
+                        }
+                      } else {
+                        from = _out - dist;
+                        do {
+                          output[_out++] = output[from++];
+                          output[_out++] = output[from++];
+                          output[_out++] = output[from++];
+                          len -= 3;
+                        } while (len > 2);
+                        if (len) {
+                          output[_out++] = output[from++];
+                          if (len > 1) {
+                            output[_out++] = output[from++];
+                          }
+                        }
+                      }
+                    } else if ((op & 64) === 0) {
+                      here = dcode[(here & 65535) + (hold & (1 << op) - 1)];
+                      continue dodist;
+                    } else {
+                      strm.msg = "invalid distance code";
+                      state.mode = BAD$1;
+                      break top;
+                    }
+                    break;
+                  }
+              } else if ((op & 64) === 0) {
+                here = lcode[(here & 65535) + (hold & (1 << op) - 1)];
+                continue dolen;
+              } else if (op & 32) {
+                state.mode = TYPE$1;
+                break top;
+              } else {
+                strm.msg = "invalid literal/length code";
+                state.mode = BAD$1;
+                break top;
+              }
+              break;
+            }
+        } while (_in < last && _out < end);
+      len = bits >> 3;
+      _in -= len;
+      bits -= len << 3;
+      hold &= (1 << bits) - 1;
+      strm.next_in = _in;
+      strm.next_out = _out;
+      strm.avail_in = _in < last ? 5 + (last - _in) : 5 - (_in - last);
+      strm.avail_out = _out < end ? 257 + (end - _out) : 257 - (_out - end);
+      state.hold = hold;
+      state.bits = bits;
+      return;
+    };
+    var MAXBITS = 15;
+    var ENOUGH_LENS$1 = 852;
+    var ENOUGH_DISTS$1 = 592;
+    var CODES$1 = 0;
+    var LENS$1 = 1;
+    var DISTS$1 = 2;
+    var lbase = new Uint16Array([
+      3,
+      4,
+      5,
+      6,
+      7,
+      8,
+      9,
+      10,
+      11,
+      13,
+      15,
+      17,
+      19,
+      23,
+      27,
+      31,
+      35,
+      43,
+      51,
+      59,
+      67,
+      83,
+      99,
+      115,
+      131,
+      163,
+      195,
+      227,
+      258,
+      0,
+      0
+    ]);
+    var lext = new Uint8Array([
+      16,
+      16,
+      16,
+      16,
+      16,
+      16,
+      16,
+      16,
+      17,
+      17,
+      17,
+      17,
+      18,
+      18,
+      18,
+      18,
+      19,
+      19,
+      19,
+      19,
+      20,
+      20,
+      20,
+      20,
+      21,
+      21,
+      21,
+      21,
+      16,
+      72,
+      78
+    ]);
+    var dbase = new Uint16Array([
+      1,
+      2,
+      3,
+      4,
+      5,
+      7,
+      9,
+      13,
+      17,
+      25,
+      33,
+      49,
+      65,
+      97,
+      129,
+      193,
+      257,
+      385,
+      513,
+      769,
+      1025,
+      1537,
+      2049,
+      3073,
+      4097,
+      6145,
+      8193,
+      12289,
+      16385,
+      24577,
+      0,
+      0
+    ]);
+    var dext = new Uint8Array([
+      16,
+      16,
+      16,
+      16,
+      17,
+      17,
+      18,
+      18,
+      19,
+      19,
+      20,
+      20,
+      21,
+      21,
+      22,
+      22,
+      23,
+      23,
+      24,
+      24,
+      25,
+      25,
+      26,
+      26,
+      27,
+      27,
+      28,
+      28,
+      29,
+      29,
+      64,
+      64
+    ]);
+    var inflate_table = (type, lens, lens_index, codes, table, table_index, work, opts) => {
+      const bits = opts.bits;
+      let len = 0;
+      let sym = 0;
+      let min = 0, max = 0;
+      let root = 0;
+      let curr = 0;
+      let drop = 0;
+      let left = 0;
+      let used = 0;
+      let huff = 0;
+      let incr;
+      let fill;
+      let low;
+      let mask;
+      let next;
+      let base = null;
+      let base_index = 0;
+      let end;
+      const count = new Uint16Array(MAXBITS + 1);
+      const offs = new Uint16Array(MAXBITS + 1);
+      let extra = null;
+      let extra_index = 0;
+      let here_bits, here_op, here_val;
+      for (len = 0; len <= MAXBITS; len++) {
+        count[len] = 0;
+      }
+      for (sym = 0; sym < codes; sym++) {
+        count[lens[lens_index + sym]]++;
+      }
+      root = bits;
+      for (max = MAXBITS; max >= 1; max--) {
+        if (count[max] !== 0) {
+          break;
+        }
+      }
+      if (root > max) {
+        root = max;
+      }
+      if (max === 0) {
+        table[table_index++] = 1 << 24 | 64 << 16 | 0;
+        table[table_index++] = 1 << 24 | 64 << 16 | 0;
+        opts.bits = 1;
+        return 0;
+      }
+      for (min = 1; min < max; min++) {
+        if (count[min] !== 0) {
+          break;
+        }
+      }
+      if (root < min) {
+        root = min;
+      }
+      left = 1;
+      for (len = 1; len <= MAXBITS; len++) {
+        left <<= 1;
+        left -= count[len];
+        if (left < 0) {
+          return -1;
+        }
+      }
+      if (left > 0 && (type === CODES$1 || max !== 1)) {
+        return -1;
+      }
+      offs[1] = 0;
+      for (len = 1; len < MAXBITS; len++) {
+        offs[len + 1] = offs[len] + count[len];
+      }
+      for (sym = 0; sym < codes; sym++) {
+        if (lens[lens_index + sym] !== 0) {
+          work[offs[lens[lens_index + sym]]++] = sym;
+        }
+      }
+      if (type === CODES$1) {
+        base = extra = work;
+        end = 19;
+      } else if (type === LENS$1) {
+        base = lbase;
+        base_index -= 257;
+        extra = lext;
+        extra_index -= 257;
+        end = 256;
+      } else {
+        base = dbase;
+        extra = dext;
+        end = -1;
+      }
+      huff = 0;
+      sym = 0;
+      len = min;
+      next = table_index;
+      curr = root;
+      drop = 0;
+      low = -1;
+      used = 1 << root;
+      mask = used - 1;
+      if (type === LENS$1 && used > ENOUGH_LENS$1 || type === DISTS$1 && used > ENOUGH_DISTS$1) {
+        return 1;
+      }
+      for (; ; ) {
+        here_bits = len - drop;
+        if (work[sym] < end) {
+          here_op = 0;
+          here_val = work[sym];
+        } else if (work[sym] > end) {
+          here_op = extra[extra_index + work[sym]];
+          here_val = base[base_index + work[sym]];
+        } else {
+          here_op = 32 + 64;
+          here_val = 0;
+        }
+        incr = 1 << len - drop;
+        fill = 1 << curr;
+        min = fill;
+        do {
+          fill -= incr;
+          table[next + (huff >> drop) + fill] = here_bits << 24 | here_op << 16 | here_val | 0;
+        } while (fill !== 0);
+        incr = 1 << len - 1;
+        while (huff & incr) {
+          incr >>= 1;
+        }
+        if (incr !== 0) {
+          huff &= incr - 1;
+          huff += incr;
+        } else {
+          huff = 0;
+        }
+        sym++;
+        if (--count[len] === 0) {
+          if (len === max) {
+            break;
+          }
+          len = lens[lens_index + work[sym]];
+        }
+        if (len > root && (huff & mask) !== low) {
+          if (drop === 0) {
+            drop = root;
+          }
+          next += min;
+          curr = len - drop;
+          left = 1 << curr;
+          while (curr + drop < max) {
+            left -= count[curr + drop];
+            if (left <= 0) {
+              break;
+            }
+            curr++;
+            left <<= 1;
+          }
+          used += 1 << curr;
+          if (type === LENS$1 && used > ENOUGH_LENS$1 || type === DISTS$1 && used > ENOUGH_DISTS$1) {
+            return 1;
+          }
+          low = huff & mask;
+          table[low] = root << 24 | curr << 16 | next - table_index | 0;
+        }
+      }
+      if (huff !== 0) {
+        table[next + huff] = len - drop << 24 | 64 << 16 | 0;
+      }
+      opts.bits = root;
+      return 0;
+    };
+    var inftrees = inflate_table;
+    var CODES = 0;
+    var LENS = 1;
+    var DISTS = 2;
+    var {
+      Z_FINISH: Z_FINISH$1,
+      Z_BLOCK,
+      Z_TREES,
+      Z_OK: Z_OK$1,
+      Z_STREAM_END: Z_STREAM_END$1,
+      Z_NEED_DICT: Z_NEED_DICT$1,
+      Z_STREAM_ERROR: Z_STREAM_ERROR$1,
+      Z_DATA_ERROR: Z_DATA_ERROR$1,
+      Z_MEM_ERROR: Z_MEM_ERROR$1,
+      Z_BUF_ERROR,
+      Z_DEFLATED
+    } = constants$2;
+    var HEAD = 1;
+    var FLAGS = 2;
+    var TIME = 3;
+    var OS = 4;
+    var EXLEN = 5;
+    var EXTRA = 6;
+    var NAME = 7;
+    var COMMENT = 8;
+    var HCRC = 9;
+    var DICTID = 10;
+    var DICT = 11;
+    var TYPE = 12;
+    var TYPEDO = 13;
+    var STORED = 14;
+    var COPY_ = 15;
+    var COPY = 16;
+    var TABLE = 17;
+    var LENLENS = 18;
+    var CODELENS = 19;
+    var LEN_ = 20;
+    var LEN = 21;
+    var LENEXT = 22;
+    var DIST = 23;
+    var DISTEXT = 24;
+    var MATCH = 25;
+    var LIT = 26;
+    var CHECK = 27;
+    var LENGTH = 28;
+    var DONE = 29;
+    var BAD = 30;
+    var MEM = 31;
+    var SYNC = 32;
+    var ENOUGH_LENS = 852;
+    var ENOUGH_DISTS = 592;
+    var MAX_WBITS = 15;
+    var DEF_WBITS = MAX_WBITS;
+    var zswap32 = (q) => {
+      return (q >>> 24 & 255) + (q >>> 8 & 65280) + ((q & 65280) << 8) + ((q & 255) << 24);
+    };
+    function InflateState() {
+      this.mode = 0;
+      this.last = false;
+      this.wrap = 0;
+      this.havedict = false;
+      this.flags = 0;
+      this.dmax = 0;
+      this.check = 0;
+      this.total = 0;
+      this.head = null;
+      this.wbits = 0;
+      this.wsize = 0;
+      this.whave = 0;
+      this.wnext = 0;
+      this.window = null;
+      this.hold = 0;
+      this.bits = 0;
+      this.length = 0;
+      this.offset = 0;
+      this.extra = 0;
+      this.lencode = null;
+      this.distcode = null;
+      this.lenbits = 0;
+      this.distbits = 0;
+      this.ncode = 0;
+      this.nlen = 0;
+      this.ndist = 0;
+      this.have = 0;
+      this.next = null;
+      this.lens = new Uint16Array(320);
+      this.work = new Uint16Array(288);
+      this.lendyn = null;
+      this.distdyn = null;
+      this.sane = 0;
+      this.back = 0;
+      this.was = 0;
+    }
+    var inflateResetKeep = (strm) => {
+      if (!strm || !strm.state) {
+        return Z_STREAM_ERROR$1;
+      }
+      const state = strm.state;
+      strm.total_in = strm.total_out = state.total = 0;
+      strm.msg = "";
+      if (state.wrap) {
+        strm.adler = state.wrap & 1;
+      }
+      state.mode = HEAD;
+      state.last = 0;
+      state.havedict = 0;
+      state.dmax = 32768;
+      state.head = null;
+      state.hold = 0;
+      state.bits = 0;
+      state.lencode = state.lendyn = new Int32Array(ENOUGH_LENS);
+      state.distcode = state.distdyn = new Int32Array(ENOUGH_DISTS);
+      state.sane = 1;
+      state.back = -1;
+      return Z_OK$1;
+    };
+    var inflateReset = (strm) => {
+      if (!strm || !strm.state) {
+        return Z_STREAM_ERROR$1;
+      }
+      const state = strm.state;
+      state.wsize = 0;
+      state.whave = 0;
+      state.wnext = 0;
+      return inflateResetKeep(strm);
+    };
+    var inflateReset2 = (strm, windowBits) => {
+      let wrap;
+      if (!strm || !strm.state) {
+        return Z_STREAM_ERROR$1;
+      }
+      const state = strm.state;
+      if (windowBits < 0) {
+        wrap = 0;
+        windowBits = -windowBits;
+      } else {
+        wrap = (windowBits >> 4) + 1;
+        if (windowBits < 48) {
+          windowBits &= 15;
+        }
+      }
+      if (windowBits && (windowBits < 8 || windowBits > 15)) {
+        return Z_STREAM_ERROR$1;
+      }
+      if (state.window !== null && state.wbits !== windowBits) {
+        state.window = null;
+      }
+      state.wrap = wrap;
+      state.wbits = windowBits;
+      return inflateReset(strm);
+    };
+    var inflateInit2 = (strm, windowBits) => {
+      if (!strm) {
+        return Z_STREAM_ERROR$1;
+      }
+      const state = new InflateState();
+      strm.state = state;
+      state.window = null;
+      const ret = inflateReset2(strm, windowBits);
+      if (ret !== Z_OK$1) {
+        strm.state = null;
+      }
+      return ret;
+    };
+    var inflateInit = (strm) => {
+      return inflateInit2(strm, DEF_WBITS);
+    };
+    var virgin = true;
+    var lenfix;
+    var distfix;
+    var fixedtables = (state) => {
+      if (virgin) {
+        lenfix = new Int32Array(512);
+        distfix = new Int32Array(32);
+        let sym = 0;
+        while (sym < 144) {
+          state.lens[sym++] = 8;
+        }
+        while (sym < 256) {
+          state.lens[sym++] = 9;
+        }
+        while (sym < 280) {
+          state.lens[sym++] = 7;
+        }
+        while (sym < 288) {
+          state.lens[sym++] = 8;
+        }
+        inftrees(LENS, state.lens, 0, 288, lenfix, 0, state.work, { bits: 9 });
+        sym = 0;
+        while (sym < 32) {
+          state.lens[sym++] = 5;
+        }
+        inftrees(DISTS, state.lens, 0, 32, distfix, 0, state.work, { bits: 5 });
+        virgin = false;
+      }
+      state.lencode = lenfix;
+      state.lenbits = 9;
+      state.distcode = distfix;
+      state.distbits = 5;
+    };
+    var updatewindow = (strm, src, end, copy) => {
+      let dist;
+      const state = strm.state;
+      if (state.window === null) {
+        state.wsize = 1 << state.wbits;
+        state.wnext = 0;
+        state.whave = 0;
+        state.window = new Uint8Array(state.wsize);
+      }
+      if (copy >= state.wsize) {
+        state.window.set(src.subarray(end - state.wsize, end), 0);
+        state.wnext = 0;
+        state.whave = state.wsize;
+      } else {
+        dist = state.wsize - state.wnext;
+        if (dist > copy) {
+          dist = copy;
+        }
+        state.window.set(src.subarray(end - copy, end - copy + dist), state.wnext);
+        copy -= dist;
+        if (copy) {
+          state.window.set(src.subarray(end - copy, end), 0);
+          state.wnext = copy;
+          state.whave = state.wsize;
+        } else {
+          state.wnext += dist;
+          if (state.wnext === state.wsize) {
+            state.wnext = 0;
+          }
+          if (state.whave < state.wsize) {
+            state.whave += dist;
+          }
+        }
+      }
+      return 0;
+    };
+    var inflate$2 = (strm, flush) => {
+      let state;
+      let input, output;
+      let next;
+      let put;
+      let have, left;
+      let hold;
+      let bits;
+      let _in, _out;
+      let copy;
+      let from;
+      let from_source;
+      let here = 0;
+      let here_bits, here_op, here_val;
+      let last_bits, last_op, last_val;
+      let len;
+      let ret;
+      const hbuf = new Uint8Array(4);
+      let opts;
+      let n;
+      const order = new Uint8Array([16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15]);
+      if (!strm || !strm.state || !strm.output || !strm.input && strm.avail_in !== 0) {
+        return Z_STREAM_ERROR$1;
+      }
+      state = strm.state;
+      if (state.mode === TYPE) {
+        state.mode = TYPEDO;
+      }
+      put = strm.next_out;
+      output = strm.output;
+      left = strm.avail_out;
+      next = strm.next_in;
+      input = strm.input;
+      have = strm.avail_in;
+      hold = state.hold;
+      bits = state.bits;
+      _in = have;
+      _out = left;
+      ret = Z_OK$1;
+      inf_leave:
+        for (; ; ) {
+          switch (state.mode) {
+            case HEAD:
+              if (state.wrap === 0) {
+                state.mode = TYPEDO;
+                break;
+              }
+              while (bits < 16) {
+                if (have === 0) {
+                  break inf_leave;
+                }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              if (state.wrap & 2 && hold === 35615) {
+                state.check = 0;
+                hbuf[0] = hold & 255;
+                hbuf[1] = hold >>> 8 & 255;
+                state.check = crc32_1(state.check, hbuf, 2, 0);
+                hold = 0;
+                bits = 0;
+                state.mode = FLAGS;
+                break;
+              }
+              state.flags = 0;
+              if (state.head) {
+                state.head.done = false;
+              }
+              if (!(state.wrap & 1) || (((hold & 255) << 8) + (hold >> 8)) % 31) {
+                strm.msg = "incorrect header check";
+                state.mode = BAD;
+                break;
+              }
+              if ((hold & 15) !== Z_DEFLATED) {
+                strm.msg = "unknown compression method";
+                state.mode = BAD;
+                break;
+              }
+              hold >>>= 4;
+              bits -= 4;
+              len = (hold & 15) + 8;
+              if (state.wbits === 0) {
+                state.wbits = len;
+              } else if (len > state.wbits) {
+                strm.msg = "invalid window size";
+                state.mode = BAD;
+                break;
+              }
+              state.dmax = 1 << state.wbits;
+              strm.adler = state.check = 1;
+              state.mode = hold & 512 ? DICTID : TYPE;
+              hold = 0;
+              bits = 0;
+              break;
+            case FLAGS:
+              while (bits < 16) {
+                if (have === 0) {
+                  break inf_leave;
+                }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              state.flags = hold;
+              if ((state.flags & 255) !== Z_DEFLATED) {
+                strm.msg = "unknown compression method";
+                state.mode = BAD;
+                break;
+              }
+              if (state.flags & 57344) {
+                strm.msg = "unknown header flags set";
+                state.mode = BAD;
+                break;
+              }
+              if (state.head) {
+                state.head.text = hold >> 8 & 1;
+              }
+              if (state.flags & 512) {
+                hbuf[0] = hold & 255;
+                hbuf[1] = hold >>> 8 & 255;
+                state.check = crc32_1(state.check, hbuf, 2, 0);
+              }
+              hold = 0;
+              bits = 0;
+              state.mode = TIME;
+            case TIME:
+              while (bits < 32) {
+                if (have === 0) {
+                  break inf_leave;
+                }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              if (state.head) {
+                state.head.time = hold;
+              }
+              if (state.flags & 512) {
+                hbuf[0] = hold & 255;
+                hbuf[1] = hold >>> 8 & 255;
+                hbuf[2] = hold >>> 16 & 255;
+                hbuf[3] = hold >>> 24 & 255;
+                state.check = crc32_1(state.check, hbuf, 4, 0);
+              }
+              hold = 0;
+              bits = 0;
+              state.mode = OS;
+            case OS:
+              while (bits < 16) {
+                if (have === 0) {
+                  break inf_leave;
+                }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              if (state.head) {
+                state.head.xflags = hold & 255;
+                state.head.os = hold >> 8;
+              }
+              if (state.flags & 512) {
+                hbuf[0] = hold & 255;
+                hbuf[1] = hold >>> 8 & 255;
+                state.check = crc32_1(state.check, hbuf, 2, 0);
+              }
+              hold = 0;
+              bits = 0;
+              state.mode = EXLEN;
+            case EXLEN:
+              if (state.flags & 1024) {
+                while (bits < 16) {
+                  if (have === 0) {
+                    break inf_leave;
+                  }
+                  have--;
+                  hold += input[next++] << bits;
+                  bits += 8;
+                }
+                state.length = hold;
+                if (state.head) {
+                  state.head.extra_len = hold;
+                }
+                if (state.flags & 512) {
+                  hbuf[0] = hold & 255;
+                  hbuf[1] = hold >>> 8 & 255;
+                  state.check = crc32_1(state.check, hbuf, 2, 0);
+                }
+                hold = 0;
+                bits = 0;
+              } else if (state.head) {
+                state.head.extra = null;
+              }
+              state.mode = EXTRA;
+            case EXTRA:
+              if (state.flags & 1024) {
+                copy = state.length;
+                if (copy > have) {
+                  copy = have;
+                }
+                if (copy) {
+                  if (state.head) {
+                    len = state.head.extra_len - state.length;
+                    if (!state.head.extra) {
+                      state.head.extra = new Uint8Array(state.head.extra_len);
+                    }
+                    state.head.extra.set(input.subarray(next, next + copy), len);
+                  }
+                  if (state.flags & 512) {
+                    state.check = crc32_1(state.check, input, copy, next);
+                  }
+                  have -= copy;
+                  next += copy;
+                  state.length -= copy;
+                }
+                if (state.length) {
+                  break inf_leave;
+                }
+              }
+              state.length = 0;
+              state.mode = NAME;
+            case NAME:
+              if (state.flags & 2048) {
+                if (have === 0) {
+                  break inf_leave;
+                }
+                copy = 0;
+                do {
+                  len = input[next + copy++];
+                  if (state.head && len && state.length < 65536) {
+                    state.head.name += String.fromCharCode(len);
+                  }
+                } while (len && copy < have);
+                if (state.flags & 512) {
+                  state.check = crc32_1(state.check, input, copy, next);
+                }
+                have -= copy;
+                next += copy;
+                if (len) {
+                  break inf_leave;
+                }
+              } else if (state.head) {
+                state.head.name = null;
+              }
+              state.length = 0;
+              state.mode = COMMENT;
+            case COMMENT:
+              if (state.flags & 4096) {
+                if (have === 0) {
+                  break inf_leave;
+                }
+                copy = 0;
+                do {
+                  len = input[next + copy++];
+                  if (state.head && len && state.length < 65536) {
+                    state.head.comment += String.fromCharCode(len);
+                  }
+                } while (len && copy < have);
+                if (state.flags & 512) {
+                  state.check = crc32_1(state.check, input, copy, next);
+                }
+                have -= copy;
+                next += copy;
+                if (len) {
+                  break inf_leave;
+                }
+              } else if (state.head) {
+                state.head.comment = null;
+              }
+              state.mode = HCRC;
+            case HCRC:
+              if (state.flags & 512) {
+                while (bits < 16) {
+                  if (have === 0) {
+                    break inf_leave;
+                  }
+                  have--;
+                  hold += input[next++] << bits;
+                  bits += 8;
+                }
+                if (hold !== (state.check & 65535)) {
+                  strm.msg = "header crc mismatch";
+                  state.mode = BAD;
+                  break;
+                }
+                hold = 0;
+                bits = 0;
+              }
+              if (state.head) {
+                state.head.hcrc = state.flags >> 9 & 1;
+                state.head.done = true;
+              }
+              strm.adler = state.check = 0;
+              state.mode = TYPE;
+              break;
+            case DICTID:
+              while (bits < 32) {
+                if (have === 0) {
+                  break inf_leave;
+                }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              strm.adler = state.check = zswap32(hold);
+              hold = 0;
+              bits = 0;
+              state.mode = DICT;
+            case DICT:
+              if (state.havedict === 0) {
+                strm.next_out = put;
+                strm.avail_out = left;
+                strm.next_in = next;
+                strm.avail_in = have;
+                state.hold = hold;
+                state.bits = bits;
+                return Z_NEED_DICT$1;
+              }
+              strm.adler = state.check = 1;
+              state.mode = TYPE;
+            case TYPE:
+              if (flush === Z_BLOCK || flush === Z_TREES) {
+                break inf_leave;
+              }
+            case TYPEDO:
+              if (state.last) {
+                hold >>>= bits & 7;
+                bits -= bits & 7;
+                state.mode = CHECK;
+                break;
+              }
+              while (bits < 3) {
+                if (have === 0) {
+                  break inf_leave;
+                }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              state.last = hold & 1;
+              hold >>>= 1;
+              bits -= 1;
+              switch (hold & 3) {
+                case 0:
+                  state.mode = STORED;
+                  break;
+                case 1:
+                  fixedtables(state);
+                  state.mode = LEN_;
+                  if (flush === Z_TREES) {
+                    hold >>>= 2;
+                    bits -= 2;
+                    break inf_leave;
+                  }
+                  break;
+                case 2:
+                  state.mode = TABLE;
+                  break;
+                case 3:
+                  strm.msg = "invalid block type";
+                  state.mode = BAD;
+              }
+              hold >>>= 2;
+              bits -= 2;
+              break;
+            case STORED:
+              hold >>>= bits & 7;
+              bits -= bits & 7;
+              while (bits < 32) {
+                if (have === 0) {
+                  break inf_leave;
+                }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              if ((hold & 65535) !== (hold >>> 16 ^ 65535)) {
+                strm.msg = "invalid stored block lengths";
+                state.mode = BAD;
+                break;
+              }
+              state.length = hold & 65535;
+              hold = 0;
+              bits = 0;
+              state.mode = COPY_;
+              if (flush === Z_TREES) {
+                break inf_leave;
+              }
+            case COPY_:
+              state.mode = COPY;
+            case COPY:
+              copy = state.length;
+              if (copy) {
+                if (copy > have) {
+                  copy = have;
+                }
+                if (copy > left) {
+                  copy = left;
+                }
+                if (copy === 0) {
+                  break inf_leave;
+                }
+                output.set(input.subarray(next, next + copy), put);
+                have -= copy;
+                next += copy;
+                left -= copy;
+                put += copy;
+                state.length -= copy;
+                break;
+              }
+              state.mode = TYPE;
+              break;
+            case TABLE:
+              while (bits < 14) {
+                if (have === 0) {
+                  break inf_leave;
+                }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              state.nlen = (hold & 31) + 257;
+              hold >>>= 5;
+              bits -= 5;
+              state.ndist = (hold & 31) + 1;
+              hold >>>= 5;
+              bits -= 5;
+              state.ncode = (hold & 15) + 4;
+              hold >>>= 4;
+              bits -= 4;
+              if (state.nlen > 286 || state.ndist > 30) {
+                strm.msg = "too many length or distance symbols";
+                state.mode = BAD;
+                break;
+              }
+              state.have = 0;
+              state.mode = LENLENS;
+            case LENLENS:
+              while (state.have < state.ncode) {
+                while (bits < 3) {
+                  if (have === 0) {
+                    break inf_leave;
+                  }
+                  have--;
+                  hold += input[next++] << bits;
+                  bits += 8;
+                }
+                state.lens[order[state.have++]] = hold & 7;
+                hold >>>= 3;
+                bits -= 3;
+              }
+              while (state.have < 19) {
+                state.lens[order[state.have++]] = 0;
+              }
+              state.lencode = state.lendyn;
+              state.lenbits = 7;
+              opts = { bits: state.lenbits };
+              ret = inftrees(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts);
+              state.lenbits = opts.bits;
+              if (ret) {
+                strm.msg = "invalid code lengths set";
+                state.mode = BAD;
+                break;
+              }
+              state.have = 0;
+              state.mode = CODELENS;
+            case CODELENS:
+              while (state.have < state.nlen + state.ndist) {
+                for (; ; ) {
+                  here = state.lencode[hold & (1 << state.lenbits) - 1];
+                  here_bits = here >>> 24;
+                  here_op = here >>> 16 & 255;
+                  here_val = here & 65535;
+                  if (here_bits <= bits) {
+                    break;
+                  }
+                  if (have === 0) {
+                    break inf_leave;
+                  }
+                  have--;
+                  hold += input[next++] << bits;
+                  bits += 8;
+                }
+                if (here_val < 16) {
+                  hold >>>= here_bits;
+                  bits -= here_bits;
+                  state.lens[state.have++] = here_val;
+                } else {
+                  if (here_val === 16) {
+                    n = here_bits + 2;
+                    while (bits < n) {
+                      if (have === 0) {
+                        break inf_leave;
+                      }
+                      have--;
+                      hold += input[next++] << bits;
+                      bits += 8;
+                    }
+                    hold >>>= here_bits;
+                    bits -= here_bits;
+                    if (state.have === 0) {
+                      strm.msg = "invalid bit length repeat";
+                      state.mode = BAD;
+                      break;
+                    }
+                    len = state.lens[state.have - 1];
+                    copy = 3 + (hold & 3);
+                    hold >>>= 2;
+                    bits -= 2;
+                  } else if (here_val === 17) {
+                    n = here_bits + 3;
+                    while (bits < n) {
+                      if (have === 0) {
+                        break inf_leave;
+                      }
+                      have--;
+                      hold += input[next++] << bits;
+                      bits += 8;
+                    }
+                    hold >>>= here_bits;
+                    bits -= here_bits;
+                    len = 0;
+                    copy = 3 + (hold & 7);
+                    hold >>>= 3;
+                    bits -= 3;
+                  } else {
+                    n = here_bits + 7;
+                    while (bits < n) {
+                      if (have === 0) {
+                        break inf_leave;
+                      }
+                      have--;
+                      hold += input[next++] << bits;
+                      bits += 8;
+                    }
+                    hold >>>= here_bits;
+                    bits -= here_bits;
+                    len = 0;
+                    copy = 11 + (hold & 127);
+                    hold >>>= 7;
+                    bits -= 7;
+                  }
+                  if (state.have + copy > state.nlen + state.ndist) {
+                    strm.msg = "invalid bit length repeat";
+                    state.mode = BAD;
+                    break;
+                  }
+                  while (copy--) {
+                    state.lens[state.have++] = len;
+                  }
+                }
+              }
+              if (state.mode === BAD) {
+                break;
+              }
+              if (state.lens[256] === 0) {
+                strm.msg = "invalid code -- missing end-of-block";
+                state.mode = BAD;
+                break;
+              }
+              state.lenbits = 9;
+              opts = { bits: state.lenbits };
+              ret = inftrees(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts);
+              state.lenbits = opts.bits;
+              if (ret) {
+                strm.msg = "invalid literal/lengths set";
+                state.mode = BAD;
+                break;
+              }
+              state.distbits = 6;
+              state.distcode = state.distdyn;
+              opts = { bits: state.distbits };
+              ret = inftrees(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts);
+              state.distbits = opts.bits;
+              if (ret) {
+                strm.msg = "invalid distances set";
+                state.mode = BAD;
+                break;
+              }
+              state.mode = LEN_;
+              if (flush === Z_TREES) {
+                break inf_leave;
+              }
+            case LEN_:
+              state.mode = LEN;
+            case LEN:
+              if (have >= 6 && left >= 258) {
+                strm.next_out = put;
+                strm.avail_out = left;
+                strm.next_in = next;
+                strm.avail_in = have;
+                state.hold = hold;
+                state.bits = bits;
+                inffast(strm, _out);
+                put = strm.next_out;
+                output = strm.output;
+                left = strm.avail_out;
+                next = strm.next_in;
+                input = strm.input;
+                have = strm.avail_in;
+                hold = state.hold;
+                bits = state.bits;
+                if (state.mode === TYPE) {
+                  state.back = -1;
+                }
+                break;
+              }
+              state.back = 0;
+              for (; ; ) {
+                here = state.lencode[hold & (1 << state.lenbits) - 1];
+                here_bits = here >>> 24;
+                here_op = here >>> 16 & 255;
+                here_val = here & 65535;
+                if (here_bits <= bits) {
+                  break;
+                }
+                if (have === 0) {
+                  break inf_leave;
+                }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              if (here_op && (here_op & 240) === 0) {
+                last_bits = here_bits;
+                last_op = here_op;
+                last_val = here_val;
+                for (; ; ) {
+                  here = state.lencode[last_val + ((hold & (1 << last_bits + last_op) - 1) >> last_bits)];
+                  here_bits = here >>> 24;
+                  here_op = here >>> 16 & 255;
+                  here_val = here & 65535;
+                  if (last_bits + here_bits <= bits) {
+                    break;
+                  }
+                  if (have === 0) {
+                    break inf_leave;
+                  }
+                  have--;
+                  hold += input[next++] << bits;
+                  bits += 8;
+                }
+                hold >>>= last_bits;
+                bits -= last_bits;
+                state.back += last_bits;
+              }
+              hold >>>= here_bits;
+              bits -= here_bits;
+              state.back += here_bits;
+              state.length = here_val;
+              if (here_op === 0) {
+                state.mode = LIT;
+                break;
+              }
+              if (here_op & 32) {
+                state.back = -1;
+                state.mode = TYPE;
+                break;
+              }
+              if (here_op & 64) {
+                strm.msg = "invalid literal/length code";
+                state.mode = BAD;
+                break;
+              }
+              state.extra = here_op & 15;
+              state.mode = LENEXT;
+            case LENEXT:
+              if (state.extra) {
+                n = state.extra;
+                while (bits < n) {
+                  if (have === 0) {
+                    break inf_leave;
+                  }
+                  have--;
+                  hold += input[next++] << bits;
+                  bits += 8;
+                }
+                state.length += hold & (1 << state.extra) - 1;
+                hold >>>= state.extra;
+                bits -= state.extra;
+                state.back += state.extra;
+              }
+              state.was = state.length;
+              state.mode = DIST;
+            case DIST:
+              for (; ; ) {
+                here = state.distcode[hold & (1 << state.distbits) - 1];
+                here_bits = here >>> 24;
+                here_op = here >>> 16 & 255;
+                here_val = here & 65535;
+                if (here_bits <= bits) {
+                  break;
+                }
+                if (have === 0) {
+                  break inf_leave;
+                }
+                have--;
+                hold += input[next++] << bits;
+                bits += 8;
+              }
+              if ((here_op & 240) === 0) {
+                last_bits = here_bits;
+                last_op = here_op;
+                last_val = here_val;
+                for (; ; ) {
+                  here = state.distcode[last_val + ((hold & (1 << last_bits + last_op) - 1) >> last_bits)];
+                  here_bits = here >>> 24;
+                  here_op = here >>> 16 & 255;
+                  here_val = here & 65535;
+                  if (last_bits + here_bits <= bits) {
+                    break;
+                  }
+                  if (have === 0) {
+                    break inf_leave;
+                  }
+                  have--;
+                  hold += input[next++] << bits;
+                  bits += 8;
+                }
+                hold >>>= last_bits;
+                bits -= last_bits;
+                state.back += last_bits;
+              }
+              hold >>>= here_bits;
+              bits -= here_bits;
+              state.back += here_bits;
+              if (here_op & 64) {
+                strm.msg = "invalid distance code";
+                state.mode = BAD;
+                break;
+              }
+              state.offset = here_val;
+              state.extra = here_op & 15;
+              state.mode = DISTEXT;
+            case DISTEXT:
+              if (state.extra) {
+                n = state.extra;
+                while (bits < n) {
+                  if (have === 0) {
+                    break inf_leave;
+                  }
+                  have--;
+                  hold += input[next++] << bits;
+                  bits += 8;
+                }
+                state.offset += hold & (1 << state.extra) - 1;
+                hold >>>= state.extra;
+                bits -= state.extra;
+                state.back += state.extra;
+              }
+              if (state.offset > state.dmax) {
+                strm.msg = "invalid distance too far back";
+                state.mode = BAD;
+                break;
+              }
+              state.mode = MATCH;
+            case MATCH:
+              if (left === 0) {
+                break inf_leave;
+              }
+              copy = _out - left;
+              if (state.offset > copy) {
+                copy = state.offset - copy;
+                if (copy > state.whave) {
+                  if (state.sane) {
+                    strm.msg = "invalid distance too far back";
+                    state.mode = BAD;
+                    break;
+                  }
+                }
+                if (copy > state.wnext) {
+                  copy -= state.wnext;
+                  from = state.wsize - copy;
+                } else {
+                  from = state.wnext - copy;
+                }
+                if (copy > state.length) {
+                  copy = state.length;
+                }
+                from_source = state.window;
+              } else {
+                from_source = output;
+                from = put - state.offset;
+                copy = state.length;
+              }
+              if (copy > left) {
+                copy = left;
+              }
+              left -= copy;
+              state.length -= copy;
+              do {
+                output[put++] = from_source[from++];
+              } while (--copy);
+              if (state.length === 0) {
+                state.mode = LEN;
+              }
+              break;
+            case LIT:
+              if (left === 0) {
+                break inf_leave;
+              }
+              output[put++] = state.length;
+              left--;
+              state.mode = LEN;
+              break;
+            case CHECK:
+              if (state.wrap) {
+                while (bits < 32) {
+                  if (have === 0) {
+                    break inf_leave;
+                  }
+                  have--;
+                  hold |= input[next++] << bits;
+                  bits += 8;
+                }
+                _out -= left;
+                strm.total_out += _out;
+                state.total += _out;
+                if (_out) {
+                  strm.adler = state.check = state.flags ? crc32_1(state.check, output, _out, put - _out) : adler32_1(state.check, output, _out, put - _out);
+                }
+                _out = left;
+                if ((state.flags ? hold : zswap32(hold)) !== state.check) {
+                  strm.msg = "incorrect data check";
+                  state.mode = BAD;
+                  break;
+                }
+                hold = 0;
+                bits = 0;
+              }
+              state.mode = LENGTH;
+            case LENGTH:
+              if (state.wrap && state.flags) {
+                while (bits < 32) {
+                  if (have === 0) {
+                    break inf_leave;
+                  }
+                  have--;
+                  hold += input[next++] << bits;
+                  bits += 8;
+                }
+                if (hold !== (state.total & 4294967295)) {
+                  strm.msg = "incorrect length check";
+                  state.mode = BAD;
+                  break;
+                }
+                hold = 0;
+                bits = 0;
+              }
+              state.mode = DONE;
+            case DONE:
+              ret = Z_STREAM_END$1;
+              break inf_leave;
+            case BAD:
+              ret = Z_DATA_ERROR$1;
+              break inf_leave;
+            case MEM:
+              return Z_MEM_ERROR$1;
+            case SYNC:
+            default:
+              return Z_STREAM_ERROR$1;
+          }
+        }
+      strm.next_out = put;
+      strm.avail_out = left;
+      strm.next_in = next;
+      strm.avail_in = have;
+      state.hold = hold;
+      state.bits = bits;
+      if (state.wsize || _out !== strm.avail_out && state.mode < BAD && (state.mode < CHECK || flush !== Z_FINISH$1)) {
+        if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out))
+          ;
+      }
+      _in -= strm.avail_in;
+      _out -= strm.avail_out;
+      strm.total_in += _in;
+      strm.total_out += _out;
+      state.total += _out;
+      if (state.wrap && _out) {
+        strm.adler = state.check = state.flags ? crc32_1(state.check, output, _out, strm.next_out - _out) : adler32_1(state.check, output, _out, strm.next_out - _out);
+      }
+      strm.data_type = state.bits + (state.last ? 64 : 0) + (state.mode === TYPE ? 128 : 0) + (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0);
+      if ((_in === 0 && _out === 0 || flush === Z_FINISH$1) && ret === Z_OK$1) {
+        ret = Z_BUF_ERROR;
+      }
+      return ret;
+    };
+    var inflateEnd = (strm) => {
+      if (!strm || !strm.state) {
+        return Z_STREAM_ERROR$1;
+      }
+      let state = strm.state;
+      if (state.window) {
+        state.window = null;
+      }
+      strm.state = null;
+      return Z_OK$1;
+    };
+    var inflateGetHeader = (strm, head) => {
+      if (!strm || !strm.state) {
+        return Z_STREAM_ERROR$1;
+      }
+      const state = strm.state;
+      if ((state.wrap & 2) === 0) {
+        return Z_STREAM_ERROR$1;
+      }
+      state.head = head;
+      head.done = false;
+      return Z_OK$1;
+    };
+    var inflateSetDictionary = (strm, dictionary) => {
+      const dictLength = dictionary.length;
+      let state;
+      let dictid;
+      let ret;
+      if (!strm || !strm.state) {
+        return Z_STREAM_ERROR$1;
+      }
+      state = strm.state;
+      if (state.wrap !== 0 && state.mode !== DICT) {
+        return Z_STREAM_ERROR$1;
+      }
+      if (state.mode === DICT) {
+        dictid = 1;
+        dictid = adler32_1(dictid, dictionary, dictLength, 0);
+        if (dictid !== state.check) {
+          return Z_DATA_ERROR$1;
+        }
+      }
+      ret = updatewindow(strm, dictionary, dictLength, dictLength);
+      if (ret) {
+        state.mode = MEM;
+        return Z_MEM_ERROR$1;
+      }
+      state.havedict = 1;
+      return Z_OK$1;
+    };
+    var inflateReset_1 = inflateReset;
+    var inflateReset2_1 = inflateReset2;
+    var inflateResetKeep_1 = inflateResetKeep;
+    var inflateInit_1 = inflateInit;
+    var inflateInit2_1 = inflateInit2;
+    var inflate_2$1 = inflate$2;
+    var inflateEnd_1 = inflateEnd;
+    var inflateGetHeader_1 = inflateGetHeader;
+    var inflateSetDictionary_1 = inflateSetDictionary;
+    var inflateInfo = "pako inflate (from Nodeca project)";
+    var inflate_1$2 = {
+      inflateReset: inflateReset_1,
+      inflateReset2: inflateReset2_1,
+      inflateResetKeep: inflateResetKeep_1,
+      inflateInit: inflateInit_1,
+      inflateInit2: inflateInit2_1,
+      inflate: inflate_2$1,
+      inflateEnd: inflateEnd_1,
+      inflateGetHeader: inflateGetHeader_1,
+      inflateSetDictionary: inflateSetDictionary_1,
+      inflateInfo
+    };
+    function GZheader() {
+      this.text = 0;
+      this.time = 0;
+      this.xflags = 0;
+      this.os = 0;
+      this.extra = null;
+      this.extra_len = 0;
+      this.name = "";
+      this.comment = "";
+      this.hcrc = 0;
+      this.done = false;
+    }
+    var gzheader = GZheader;
+    var toString = Object.prototype.toString;
+    var {
+      Z_NO_FLUSH,
+      Z_FINISH,
+      Z_OK,
+      Z_STREAM_END,
+      Z_NEED_DICT,
+      Z_STREAM_ERROR,
+      Z_DATA_ERROR,
+      Z_MEM_ERROR
+    } = constants$2;
+    function Inflate$1(options) {
+      this.options = common.assign({
+        chunkSize: 1024 * 64,
+        windowBits: 15,
+        to: ""
+      }, options || {});
+      const opt = this.options;
+      if (opt.raw && opt.windowBits >= 0 && opt.windowBits < 16) {
+        opt.windowBits = -opt.windowBits;
+        if (opt.windowBits === 0) {
+          opt.windowBits = -15;
+        }
+      }
+      if (opt.windowBits >= 0 && opt.windowBits < 16 && !(options && options.windowBits)) {
+        opt.windowBits += 32;
+      }
+      if (opt.windowBits > 15 && opt.windowBits < 48) {
+        if ((opt.windowBits & 15) === 0) {
+          opt.windowBits |= 15;
+        }
+      }
+      this.err = 0;
+      this.msg = "";
+      this.ended = false;
+      this.chunks = [];
+      this.strm = new zstream();
+      this.strm.avail_out = 0;
+      let status = inflate_1$2.inflateInit2(this.strm, opt.windowBits);
+      if (status !== Z_OK) {
+        throw new Error(messages[status]);
+      }
+      this.header = new gzheader();
+      inflate_1$2.inflateGetHeader(this.strm, this.header);
+      if (opt.dictionary) {
+        if (typeof opt.dictionary === "string") {
+          opt.dictionary = strings.string2buf(opt.dictionary);
+        } else if (toString.call(opt.dictionary) === "[object ArrayBuffer]") {
+          opt.dictionary = new Uint8Array(opt.dictionary);
+        }
+        if (opt.raw) {
+          status = inflate_1$2.inflateSetDictionary(this.strm, opt.dictionary);
+          if (status !== Z_OK) {
+            throw new Error(messages[status]);
+          }
+        }
+      }
+    }
+    Inflate$1.prototype.push = function(data, flush_mode) {
+      const strm = this.strm;
+      const chunkSize = this.options.chunkSize;
+      const dictionary = this.options.dictionary;
+      let status, _flush_mode, last_avail_out;
+      if (this.ended)
+        return false;
+      if (flush_mode === ~~flush_mode)
+        _flush_mode = flush_mode;
+      else
+        _flush_mode = flush_mode === true ? Z_FINISH : Z_NO_FLUSH;
+      if (toString.call(data) === "[object ArrayBuffer]") {
+        strm.input = new Uint8Array(data);
+      } else {
+        strm.input = data;
+      }
+      strm.next_in = 0;
+      strm.avail_in = strm.input.length;
+      for (; ; ) {
+        if (strm.avail_out === 0) {
+          strm.output = new Uint8Array(chunkSize);
+          strm.next_out = 0;
+          strm.avail_out = chunkSize;
+        }
+        status = inflate_1$2.inflate(strm, _flush_mode);
+        if (status === Z_NEED_DICT && dictionary) {
+          status = inflate_1$2.inflateSetDictionary(strm, dictionary);
+          if (status === Z_OK) {
+            status = inflate_1$2.inflate(strm, _flush_mode);
+          } else if (status === Z_DATA_ERROR) {
+            status = Z_NEED_DICT;
+          }
+        }
+        while (strm.avail_in > 0 && status === Z_STREAM_END && strm.state.wrap > 0 && data[strm.next_in] !== 0) {
+          inflate_1$2.inflateReset(strm);
+          status = inflate_1$2.inflate(strm, _flush_mode);
+        }
+        switch (status) {
+          case Z_STREAM_ERROR:
+          case Z_DATA_ERROR:
+          case Z_NEED_DICT:
+          case Z_MEM_ERROR:
+            this.onEnd(status);
+            this.ended = true;
+            return false;
+        }
+        last_avail_out = strm.avail_out;
+        if (strm.next_out) {
+          if (strm.avail_out === 0 || status === Z_STREAM_END) {
+            if (this.options.to === "string") {
+              let next_out_utf8 = strings.utf8border(strm.output, strm.next_out);
+              let tail = strm.next_out - next_out_utf8;
+              let utf8str = strings.buf2string(strm.output, next_out_utf8);
+              strm.next_out = tail;
+              strm.avail_out = chunkSize - tail;
+              if (tail)
+                strm.output.set(strm.output.subarray(next_out_utf8, next_out_utf8 + tail), 0);
+              this.onData(utf8str);
+            } else {
+              this.onData(strm.output.length === strm.next_out ? strm.output : strm.output.subarray(0, strm.next_out));
+            }
+          }
+        }
+        if (status === Z_OK && last_avail_out === 0)
+          continue;
+        if (status === Z_STREAM_END) {
+          status = inflate_1$2.inflateEnd(this.strm);
+          this.onEnd(status);
+          this.ended = true;
+          return true;
+        }
+        if (strm.avail_in === 0)
+          break;
+      }
+      return true;
+    };
+    Inflate$1.prototype.onData = function(chunk) {
+      this.chunks.push(chunk);
+    };
+    Inflate$1.prototype.onEnd = function(status) {
+      if (status === Z_OK) {
+        if (this.options.to === "string") {
+          this.result = this.chunks.join("");
+        } else {
+          this.result = common.flattenChunks(this.chunks);
+        }
+      }
+      this.chunks = [];
+      this.err = status;
+      this.msg = this.strm.msg;
+    };
+    function inflate$1(input, options) {
+      const inflator = new Inflate$1(options);
+      inflator.push(input);
+      if (inflator.err)
+        throw inflator.msg || messages[inflator.err];
+      return inflator.result;
+    }
+    function inflateRaw$1(input, options) {
+      options = options || {};
+      options.raw = true;
+      return inflate$1(input, options);
+    }
+    var Inflate_1$1 = Inflate$1;
+    var inflate_2 = inflate$1;
+    var inflateRaw_1$1 = inflateRaw$1;
+    var ungzip$1 = inflate$1;
+    var constants = constants$2;
+    var inflate_1$1 = {
+      Inflate: Inflate_1$1,
+      inflate: inflate_2,
+      inflateRaw: inflateRaw_1$1,
+      ungzip: ungzip$1,
+      constants
+    };
+    var { Inflate, inflate, inflateRaw, ungzip } = inflate_1$1;
+    var inflate_1 = inflate;
+    var ungzip_1 = ungzip;
+
+    // esm/filters.js
+    var zlib_decompress = function(buf, itemsize) {
+      let input_array = new Uint8Array(buf);
+      return inflate_1(input_array).buffer;
+    };
+    var unshuffle = function(buf, itemsize) {
+      let buffer_size = buf.byteLength;
+      let unshuffled_view = new Uint8Array(buffer_size);
+      let step = Math.floor(buffer_size / itemsize);
+      let shuffled_view = new DataView(buf);
+      for (var j = 0; j < itemsize; j++) {
+        for (var i = 0; i < step; i++) {
+          unshuffled_view[j + i * itemsize] = shuffled_view.getUint8(j * step + i);
+        }
+      }
+      return unshuffled_view.buffer;
+    };
+    var fletch32 = function(buf, itemsize) {
+      _verify_fletcher32(buf);
+      return buf.slice(0, -4);
+    };
+    function _verify_fletcher32(chunk_buffer) {
+      var odd_chunk_buffer = chunk_buffer.byteLength % 2 != 0;
+      var data_length = chunk_buffer.byteLength - 4;
+      var view = new DataView(chunk_buffer);
+      var sum1 = 0;
+      var sum2 = 0;
+      for (var offset = 0; offset < data_length - 1; offset += 2) {
+        let datum = view.getUint16(offset, true);
+        sum1 = (sum1 + datum) % 65535;
+        sum2 = (sum2 + sum1) % 65535;
+      }
+      if (odd_chunk_buffer) {
+        let datum = view.getUint8(data_length - 1);
+        sum1 = (sum1 + datum) % 65535;
+        sum2 = (sum2 + sum1) % 65535;
+      }
+      var [ref_sum1, ref_sum2] = struct.unpack_from(">HH", chunk_buffer, data_length);
+      ref_sum1 = ref_sum1 % 65535;
+      ref_sum2 = ref_sum2 % 65535;
+      if (sum1 != ref_sum1 || sum2 != ref_sum2) {
+        throw 'ValueError("fletcher32 checksum invalid")';
+      }
+      return true;
+    }
+    var GZIP_DEFLATE_FILTER = 1;
+    var SHUFFLE_FILTER = 2;
+    var FLETCH32_FILTER = 3;
+    var Filters = /* @__PURE__ */ new Map([
+      [GZIP_DEFLATE_FILTER, zlib_decompress],
+      [SHUFFLE_FILTER, unshuffle],
+      [FLETCH32_FILTER, fletch32]
+    ]);
+
+    // esm/btree.js
+    var AbstractBTree = class {
+      constructor(fh, offset) {
+        this.fh = fh;
+        this.offset = offset;
+        this.depth = null;
+      }
+      async init() {
+        this.all_nodes = /* @__PURE__ */ new Map();
+        await this._read_root_node();
+        await this._read_children();
+      }
+      async _read_children() {
+        let node_level = this.depth;
+        while (node_level > 0) {
+          for (var parent_node of this.all_nodes.get(node_level)) {
+            for (var child_addr of parent_node.get("addresses")) {
+              this._add_node(await this._read_node(child_addr, node_level - 1));
+            }
+          }
+          node_level--;
+        }
+      }
+      async _read_root_node() {
+        let root_node = await this._read_node(this.offset, null);
+        this._add_node(root_node);
+        this.depth = root_node.get("node_level");
+      }
+      _add_node(node) {
+        let node_level = node.get("node_level");
+        if (this.all_nodes.has(node_level)) {
+          this.all_nodes.get(node_level).push(node);
+        } else {
+          this.all_nodes.set(node_level, [node]);
+        }
+      }
+      async _read_node(offset, node_level) {
+        let node = await this._read_node_header(offset, node_level);
+        node.set("keys", []);
+        node.set("addresses", []);
+        return node;
+      }
+      async _read_node_header(offset) {
+        throw "NotImplementedError: must define _read_node_header in implementation class";
+      }
+    };
+    var BTreeV1 = class extends AbstractBTree {
+      B_LINK_NODE = /* @__PURE__ */ new Map([
+        ["signature", "4s"],
+        ["node_type", "B"],
+        ["node_level", "B"],
+        ["entries_used", "H"],
+        ["left_sibling", "Q"],
+        ["right_sibling", "Q"]
+      ]);
+      async _read_node_header(offset, node_level) {
+        let node = await _unpack_struct_from_async(this.B_LINK_NODE, this.fh, offset);
+        if (node_level != null) {
+          if (node.get("node_level") != node_level) {
+            throw "node level does not match";
+          }
+        }
+        return node;
+      }
+    };
+    var BTreeV1Groups = class extends BTreeV1 {
+      NODE_TYPE = 0;
+      constructor(fh, offset) {
+        super(fh, offset);
+        this.ready = this.init();
+      }
+      async _read_node(offset, node_level) {
+        let node = await this._read_node_header(offset, node_level);
+        offset += _structure_size(this.B_LINK_NODE);
+        let keys = [];
+        let addresses = [];
+        let entries_used = node.get("entries_used");
+        for (var i = 0; i < entries_used; i++) {
+          let key = (await struct.unpack_from_async("<Q", this.fh, offset))[0];
+          offset += 8;
+          let address = (await struct.unpack_from_async("<Q", this.fh, offset))[0];
+          offset += 8;
+          keys.push(key);
+          addresses.push(address);
+        }
+        keys.push((await struct.unpack_from_async("<Q", this.fh, offset))[0]);
+        node.set("keys", keys);
+        node.set("addresses", addresses);
+        return node;
+      }
+      symbol_table_addresses() {
+        var all_address = [];
+        var root_nodes = this.all_nodes.get(0);
+        for (var node of root_nodes) {
+          all_address = all_address.concat(node.get("addresses"));
+        }
+        return all_address;
+      }
+    };
+    var BTreeV1RawDataChunks = class extends BTreeV1 {
+      NODE_TYPE = 1;
+      constructor(fh, offset, dims) {
+        super(fh, offset);
+        this.dims = dims;
+        this.ready = this.init();
+      }
+      async _read_node(offset, node_level) {
+        let node = await this._read_node_header(offset, node_level);
+        offset += _structure_size(this.B_LINK_NODE);
+        var keys = [];
+        var addresses = [];
+        let entries_used = node.get("entries_used");
+        for (var i = 0; i < entries_used; i++) {
+          let [chunk_size, filter_mask] = await struct.unpack_from_async("<II", this.fh, offset);
+          offset += 8;
+          let fmt = "<" + this.dims.toFixed() + "Q";
+          let fmt_size = struct.calcsize(fmt);
+          let chunk_offset = await struct.unpack_from_async(fmt, this.fh, offset);
+          offset += fmt_size;
+          let chunk_address = (await struct.unpack_from_async("<Q", this.fh, offset))[0];
+          offset += 8;
+          keys.push(/* @__PURE__ */ new Map([
+            ["chunk_size", chunk_size],
+            ["filter_mask", filter_mask],
+            ["chunk_offset", chunk_offset]
+          ]));
+          addresses.push(chunk_address);
+        }
+        node.set("keys", keys);
+        node.set("addresses", addresses);
+        return node;
+      }
+      async construct_data_from_chunks(chunk_shape, data_shape, dtype, filter_pipeline) {
+        var item_getter, item_big_endian, item_size;
+        if (dtype instanceof Array) {
+          let dtype_class = dtype[0];
+          if (dtype_class == "REFERENCE") {
+            let size = dtype[1];
+            if (size != 8) {
+              throw "NotImplementedError('Unsupported Reference type')";
+            }
+            var dtype = "<u8";
+            item_getter = "getUint64";
+            item_big_endian = false;
+            item_size = 8;
+          } else if (dtype_class == "VLEN_STRING" || dtype_class == "VLEN_SEQUENCE") {
+            item_getter = "getVLENStruct";
+            item_big_endian = false;
+            item_size = 16;
+          } else {
+            throw "NotImplementedError('datatype not implemented')";
+          }
+        } else {
+          [item_getter, item_big_endian, item_size] = dtype_getter(dtype);
+        }
+        var data_size = data_shape.reduce(function(a, b) {
+          return a * b;
+        }, 1);
+        var chunk_size = chunk_shape.reduce(function(a, b) {
+          return a * b;
+        }, 1);
+        let dims = data_shape.length;
+        var current_stride = 1;
+        chunk_shape.slice().map(function(d2) {
+          let s = current_stride;
+          current_stride *= d2;
+          return s;
+        });
+        var current_stride = 1;
+        var data_strides = data_shape.slice().reverse().map(function(d2) {
+          let s = current_stride;
+          current_stride *= d2;
+          return s;
+        }).reverse();
+        var data = new Array(data_size);
+        let chunk_buffer_size = chunk_size * item_size;
+        for (var node of this.all_nodes.get(0)) {
+          let node_keys = node.get("keys");
+          let node_addresses = node.get("addresses");
+          let nkeys = node_keys.length;
+          for (var ik = 0; ik < nkeys; ik++) {
+            let node_key = node_keys[ik];
+            let addr = node_addresses[ik];
+            var chunk_buffer;
+            if (filter_pipeline == null) {
+              chunk_buffer = await this.fh.slice(addr, addr + chunk_buffer_size);
+            } else {
+              chunk_buffer = await this.fh.slice(addr, addr + node_key.get("chunk_size"));
+              let filter_mask = node_key.get("filter_mask");
+              chunk_buffer = this._filter_chunk(chunk_buffer, filter_mask, filter_pipeline, item_size);
+            }
+            var chunk_offset = node_key.get("chunk_offset").slice();
+            var apos = chunk_offset.slice();
+            var cpos = apos.map(function() {
+              return 0;
+            });
+            var cview = new DataView64(chunk_buffer);
+            for (var ci = 0; ci < chunk_size; ci++) {
+              for (var d = dims - 1; d >= 0; d--) {
+                if (cpos[d] >= chunk_shape[d]) {
+                  cpos[d] = 0;
+                  apos[d] = chunk_offset[d];
+                  if (d > 0) {
+                    cpos[d - 1] += 1;
+                    apos[d - 1] += 1;
+                  }
+                } else {
+                  break;
+                }
+              }
+              let inbounds = apos.slice(0, -1).every(function(p, d2) {
+                return p < data_shape[d2];
+              });
+              if (inbounds) {
+                let cb_offset = ci * item_size;
+                let datum = cview[item_getter](cb_offset, !item_big_endian, item_size);
+                let ai = apos.slice(0, -1).reduce(function(prev, curr, index) {
+                  return curr * data_strides[index] + prev;
+                }, 0);
+                data[ai] = datum;
+              }
+              cpos[dims - 1] += 1;
+              apos[dims - 1] += 1;
+            }
+          }
+        }
+        return data;
+      }
+      _filter_chunk(chunk_buffer, filter_mask, filter_pipeline, itemsize) {
+        let num_filters = filter_pipeline.length;
+        let buf = chunk_buffer.slice();
+        for (var filter_index = num_filters - 1; filter_index >= 0; filter_index--) {
+          if (filter_mask & 1 << filter_index) {
+            continue;
+          }
+          let pipeline_entry = filter_pipeline[filter_index];
+          let filter_id = pipeline_entry.get("filter_id");
+          let client_data = pipeline_entry.get("client_data");
+          if (Filters.has(filter_id)) {
+            buf = Filters.get(filter_id)(buf, itemsize, client_data);
+          } else {
+            throw 'NotImplementedError("Filter with id:' + filter_id.toFixed() + ' not supported")';
+          }
+        }
+        return buf;
+      }
+    };
+    var BTreeV2 = class extends AbstractBTree {
+      B_TREE_HEADER = /* @__PURE__ */ new Map([
+        ["signature", "4s"],
+        ["version", "B"],
+        ["node_type", "B"],
+        ["node_size", "I"],
+        ["record_size", "H"],
+        ["depth", "H"],
+        ["split_percent", "B"],
+        ["merge_percent", "B"],
+        ["root_address", "Q"],
+        ["root_nrecords", "H"],
+        ["total_nrecords", "Q"]
+      ]);
+      B_LINK_NODE = /* @__PURE__ */ new Map([
+        ["signature", "4s"],
+        ["version", "B"],
+        ["node_type", "B"]
+      ]);
+      constructor(fh, offset) {
+        super(fh, offset);
+        this.ready = this.init();
+      }
+      async _read_root_node() {
+        let h = await this._read_tree_header(this.offset);
+        this.address_formats = this._calculate_address_formats(h);
+        this.header = h;
+        this.depth = h.get("depth");
+        let address = [h.get("root_address"), h.get("root_nrecords"), h.get("total_nrecords")];
+        let root_node = await this._read_node(address, this.depth);
+        this._add_node(root_node);
+      }
+      async _read_tree_header(offset) {
+        let header = await _unpack_struct_from_async(this.B_TREE_HEADER, this.fh, this.offset);
+        return header;
+      }
+      _calculate_address_formats(header) {
+        let node_size = header.get("node_size");
+        let record_size = header.get("record_size");
+        let nrecords_max = 0;
+        let ntotalrecords_max = 0;
+        let address_formats = /* @__PURE__ */ new Map();
+        let max_depth = header.get("depth");
+        for (var node_level = 0; node_level <= max_depth; node_level++) {
+          let offset_fmt = "";
+          let num1_fmt = "";
+          let num2_fmt = "";
+          let offset_size, num1_size, num2_size;
+          if (node_level == 0) {
+            offset_size = 0;
+            num1_size = 0;
+            num2_size = 0;
+          } else if (node_level == 1) {
+            offset_size = 8;
+            offset_fmt = "<Q";
+            num1_size = this._required_bytes(nrecords_max);
+            num1_fmt = this._int_format(num1_size);
+            num2_size = 0;
+          } else {
+            offset_size = 8;
+            offset_fmt = "<Q";
+            num1_size = this._required_bytes(nrecords_max);
+            num1_fmt = this._int_format(num1_size);
+            num2_size = this._required_bytes(ntotalrecords_max);
+            num2_fmt = this._int_format(num2_size);
+          }
+          address_formats.set(node_level, [
+            offset_size,
+            num1_size,
+            num2_size,
+            offset_fmt,
+            num1_fmt,
+            num2_fmt
+          ]);
+          if (node_level < max_depth) {
+            let addr_size = offset_size + num1_size + num2_size;
+            nrecords_max = this._nrecords_max(node_size, record_size, addr_size);
+            if (ntotalrecords_max > 0) {
+              ntotalrecords_max *= nrecords_max;
+            } else {
+              ntotalrecords_max = nrecords_max;
+            }
+          }
+        }
+        return address_formats;
+      }
+      _nrecords_max(node_size, record_size, addr_size) {
+        return Math.floor((node_size - 10 - addr_size) / (record_size + addr_size));
+      }
+      _required_bytes(integer) {
+        return Math.ceil(bitSize(integer) / 8);
+      }
+      _int_format(bytelength) {
+        return ["<B", "<H", "<I", "<Q"][bytelength - 1];
+      }
+      async _read_node(address, node_level) {
+        let [offset, nrecords, ntotalrecords] = address;
+        let node = this._read_node_header(offset, node_level);
+        offset += _structure_size(this.B_LINK_NODE);
+        let record_size = this.header.get("record_size");
+        let keys = [];
+        for (let i = 0; i < nrecords; i++) {
+          let record = await this._parse_record(this.fh, offset, record_size);
+          offset += record_size;
+          keys.push(record);
+        }
+        let addresses = [];
+        let fmts = this.address_formats.get(node_level);
+        if (node_level != 0) {
+          let [offset_size, num1_size, num2_size, offset_fmt, num1_fmt, num2_fmt] = fmts;
+          for (let j = 0; j <= nrecords; j++) {
+            let address_offset = (await struct.unpack_from_async(offset_fmt, this.fh, offset))[0];
+            offset += offset_size;
+            let num1 = (await struct.unpack_from_async(num1_fmt, this.fh, offset))[0];
+            offset += num1_size;
+            let num2 = num1;
+            if (num2_size > 0) {
+              num2 = (await struct.unpack_from_async(num2_fmt, this.fh, offset))[0];
+              offset += num2_size;
+            }
+            addresses.push([address_offset, num1, num2]);
+          }
+        }
+        node.set("keys", keys);
+        node.set("addresses", addresses);
+        return node;
+      }
+      async _read_node_header(offset, node_level) {
+        let node = await _unpack_struct_from_async(this.B_LINK_NODE, this.fh, offset);
+        node.set("node_level", node_level);
+        return node;
+      }
+      *iter_records() {
+        for (let nodelist of this.all_nodes.values()) {
+          for (let node of nodelist) {
+            for (let key of node.get("keys")) {
+              yield key;
+            }
+          }
+        }
+      }
+      _parse_record(record) {
+        throw "NotImplementedError";
+      }
+    };
+    var BTreeV2GroupNames = class extends BTreeV2 {
+      NODE_TYPE = 5;
+      async _parse_record(buf, offset, size) {
+        let namehash = (await struct.unpack_from_async("<I", buf, offset))[0];
+        offset += 4;
+        const heapid = await buf.slice(offset, offset + 7);
+        return /* @__PURE__ */ new Map([["namehash", namehash], ["heapid", heapid]]);
+      }
+    };
+    var BTreeV2GroupOrders = class extends BTreeV2 {
+      NODE_TYPE = 6;
+      async _parse_record(buf, offset, size) {
+        let creationorder = (await struct.unpack_from_async("<Q", buf, offset))[0];
+        offset += 8;
+        const heapid = await buf.slice(offset, offset + 7);
+        return /* @__PURE__ */ new Map([["creationorder", creationorder], ["heapid", heapid]]);
+      }
+    };
+
+    // esm/misc-low-level.js
+    var SuperBlock = class {
+      constructor(fh, offset) {
+        this.ready = this.init(fh, offset);
+      }
+      async init(fh, offset) {
+        let version_hint = await struct.unpack_from_async("<B", fh, offset + 8);
+        var contents;
+        if (version_hint == 0) {
+          contents = await _unpack_struct_from_async(SUPERBLOCK_V0, fh, offset);
+          this._end_of_sblock = offset + SUPERBLOCK_V0_SIZE;
+        } else if (version_hint == 2 || version_hint == 3) {
+          contents = await _unpack_struct_from_async(SUPERBLOCK_V2_V3, fh, offset);
+          this._end_of_sblock = offset + SUPERBLOCK_V2_V3_SIZE;
+        } else {
+          throw "unsupported superblock version: " + version_hint.toFixed();
+        }
+        if (contents.get("format_signature") != FORMAT_SIGNATURE) {
+          throw "Incorrect file signature: " + contents.get("format_signature");
+        }
+        if (contents.get("offset_size") != 8 || contents.get("length_size") != 8) {
+          throw "File uses non-64-bit addressing";
+        }
+        this.version = contents.get("superblock_version");
+        this._contents = contents;
+        this._root_symbol_table = null;
+        this._fh = fh;
+      }
+      async get_offset_to_dataobjects() {
+        if (this.version == 0) {
+          var sym_table = new SymbolTable(this._fh, this._end_of_sblock, true);
+          await sym_table.ready;
+          this._root_symbol_table = sym_table;
+          return sym_table.group_offset;
+        } else if (this.version == 2 || this.version == 3) {
+          return this._contents.get("root_group_address");
+        } else {
+          throw "Not implemented version = " + this.version.toFixed();
+        }
+      }
+    };
+    var Heap = class {
+      constructor(fh, offset) {
+        this.ready = this.init(fh, offset);
+      }
+      async init(fh, offset) {
+        let local_heap = await _unpack_struct_from_async(LOCAL_HEAP, fh, offset);
+        assert(local_heap.get("signature") == "HEAP");
+        assert(local_heap.get("version") == 0);
+        let data_offset = local_heap.get("address_of_data_segment");
+        let heap_data = await fh.slice(data_offset, data_offset + local_heap.get("data_segment_size"));
+        local_heap.set("heap_data", heap_data);
+        this._contents = local_heap;
+        this.data = heap_data;
+      }
+      get_object_name(offset) {
+        let end = new Uint8Array(this.data).indexOf(0, offset);
+        let name_size = end - offset;
+        let name = struct.unpack_from("<" + name_size.toFixed() + "s", this.data, offset)[0];
+        return name;
+      }
+    };
+    var SymbolTable = class {
+      constructor(fh, offset, root = false) {
+        this.ready = this.init(fh, offset, root);
+      }
+      async init(fh, offset, root) {
+        var node;
+        if (root) {
+          node = /* @__PURE__ */ new Map([["symbols", 1]]);
+        } else {
+          node = await _unpack_struct_from_async(SYMBOL_TABLE_NODE, fh, offset);
+          if (node.get("signature") != "SNOD") {
+            throw "incorrect node type";
+          }
+          offset += SYMBOL_TABLE_NODE_SIZE;
+        }
+        var entries = [];
+        var n_symbols = node.get("symbols");
+        for (var i = 0; i < n_symbols; i++) {
+          entries.push(await _unpack_struct_from_async(SYMBOL_TABLE_ENTRY, fh, offset));
+          offset += SYMBOL_TABLE_ENTRY_SIZE;
+        }
+        if (root) {
+          this.group_offset = entries[0].get("object_header_address");
+        }
+        this.entries = entries;
+        this._contents = node;
+        return this;
+      }
+      assign_name(heap) {
+        this.entries.forEach(function(entry) {
+          let offset = entry.get("link_name_offset");
+          let link_name = heap.get_object_name(offset);
+          entry.set("link_name", link_name);
+        });
+      }
+      get_links(heap) {
+        var links = {};
+        this.entries.forEach(function(e) {
+          let cache_type = e.get("cache_type");
+          let link_name = e.get("link_name");
+          if (cache_type == 0 || cache_type == 1) {
+            links[link_name] = e.get("object_header_address");
+          } else if (cache_type == 2) {
+            let scratch = e.get("scratch");
+            let buf = new ArrayBuffer(4);
+            let bufView = new Uint8Array(buf);
+            for (var i = 0; i < 4; i++) {
+              bufView[i] = scratch.charCodeAt(i);
+            }
+            let offset = struct.unpack_from("<I", buf, 0)[0];
+            links[link_name] = heap.get_object_name(offset);
+          }
+        });
+        return links;
+      }
+    };
+    var GlobalHeap = class {
+      constructor(fh, offset) {
+        this.ready = this.init(fh, offset);
+      }
+      async init(fh, offset) {
+        let header = await _unpack_struct_from_async(GLOBAL_HEAP_HEADER, fh, offset);
+        offset += GLOBAL_HEAP_HEADER_SIZE;
+        let heap_data_size = header.get("collection_size") - GLOBAL_HEAP_HEADER_SIZE;
+        let heap_data = await fh.slice(offset, offset + heap_data_size);
+        this.heap_data = heap_data;
+        this._header = header;
+        this._objects = null;
+      }
+      get objects() {
+        if (this._objects == null) {
+          this._objects = /* @__PURE__ */ new Map();
+          var offset = 0;
+          while (offset <= this.heap_data.byteLength - GLOBAL_HEAP_OBJECT_SIZE) {
+            let info = _unpack_struct_from(GLOBAL_HEAP_OBJECT, this.heap_data, offset);
+            if (info.get("object_index") == 0) {
+              break;
+            }
+            offset += GLOBAL_HEAP_OBJECT_SIZE;
+            let obj_data = this.heap_data.slice(offset, offset + info.get("object_size"));
+            this._objects.set(info.get("object_index"), obj_data);
+            offset += _padded_size(info.get("object_size"));
+          }
+        }
+        return this._objects;
+      }
+    };
+    var FractalHeap = class {
+      constructor(fh, offset) {
+        this.fh = fh;
+        this.ready = this.init(offset);
+      }
+      async init(offset) {
+        let header = await _unpack_struct_from_async(FRACTAL_HEAP_HEADER, this.fh, offset);
+        offset += _structure_size(FRACTAL_HEAP_HEADER);
+        assert(header.get("signature") == "FRHP");
+        assert(header.get("version") == 0);
+        if (header.get("filter_info_size") > 0) {
+          throw "Filter info size not supported on FractalHeap";
+        }
+        if (header.get("btree_address_huge_objects") == UNDEFINED_ADDRESS) {
+          header.set("btree_address_huge_objects", null);
+        } else {
+          throw "Huge objects not implemented in FractalHeap";
+        }
+        if (header.get("root_block_address") == UNDEFINED_ADDRESS) {
+          header.set("root_block_address", null);
+        }
+        let nbits = header.get("log2_maximum_heap_size");
+        let block_offset_size = this._min_size_nbits(nbits);
+        let h = /* @__PURE__ */ new Map([
+          ["signature", "4s"],
+          ["version", "B"],
+          ["heap_header_adddress", "Q"],
+          ["block_offset", `${block_offset_size}B`]
+        ]);
+        this.indirect_block_header = new Map(h);
+        this.indirect_block_header_size = _structure_size(h);
+        if ((header.get("flags") & 2) == 2) {
+          h.set("checksum", "I");
+        }
+        this.direct_block_header = h;
+        this.direct_block_header_size = _structure_size(h);
+        let maximum_dblock_size = header.get("maximum_direct_block_size");
+        this._managed_object_offset_size = this._min_size_nbits(nbits);
+        let value = Math.min(maximum_dblock_size, header.get("max_managed_object_size"));
+        this._managed_object_length_size = this._min_size_integer(value);
+        let start_block_size = header.get("starting_block_size");
+        let table_width = header.get("table_width");
+        if (!(start_block_size > 0)) {
+          throw "Starting block size == 0 not implemented";
+        }
+        let log2_maximum_dblock_size = Number(Math.floor(Math.log2(maximum_dblock_size)));
+        assert(1n << BigInt(log2_maximum_dblock_size) == maximum_dblock_size);
+        let log2_start_block_size = Number(Math.floor(Math.log2(start_block_size)));
+        assert(1n << BigInt(log2_start_block_size) == start_block_size);
+        this._max_direct_nrows = log2_maximum_dblock_size - log2_start_block_size + 2;
+        let log2_table_width = Math.floor(Math.log2(table_width));
+        assert(1 << log2_table_width == table_width);
+        this._indirect_nrows_sub = log2_table_width + log2_start_block_size - 1;
+        this.header = header;
+        this.nobjects = header.get("managed_object_count") + header.get("huge_object_count") + header.get("tiny_object_count");
+        let managed = [];
+        let root_address = header.get("root_block_address");
+        let nrows = 0;
+        if (root_address != null) {
+          nrows = header.get("indirect_current_rows_count");
+        }
+        if (nrows > 0) {
+          for await (let data of this._iter_indirect_block(this.fh, root_address, nrows)) {
+            managed.push(data);
+          }
+        } else {
+          let data = await this._read_direct_block(this.fh, root_address, start_block_size);
+          managed.push(data);
+        }
+        let data_size = managed.reduce((p, c) => p + c.byteLength, 0);
+        let combined = new Uint8Array(data_size);
+        let moffset = 0;
+        managed.forEach((m) => {
+          combined.set(new Uint8Array(m), moffset);
+          moffset += m.byteLength;
+        });
+        this.managed = combined.buffer;
+      }
+      async _read_direct_block(fh, offset, block_size) {
+        let data = await fh.slice(offset, offset + block_size);
+        let header = _unpack_struct_from(this.direct_block_header, data);
+        assert(header.get("signature") == "FHDB");
+        return data;
+      }
+      get_data(heapid) {
+        let firstbyte = struct.unpack_from("<B", heapid, 0)[0];
+        let idtype = firstbyte >> 4 & 3;
+        let version = firstbyte >> 6;
+        let data_offset = 1;
+        if (idtype == 0) {
+          assert(version == 0);
+          let nbytes = this._managed_object_offset_size;
+          let offset = _unpack_integer(nbytes, heapid, data_offset);
+          data_offset += nbytes;
+          nbytes = this._managed_object_length_size;
+          let size = _unpack_integer(nbytes, heapid, data_offset);
+          return this.managed.slice(offset, offset + size);
+        } else if (idtype == 1) {
+          throw "tiny objectID not supported in FractalHeap";
+        } else if (idtype == 2) {
+          throw "huge objectID not supported in FractalHeap";
+        } else {
+          throw "unknown objectID type in FractalHeap";
+        }
+      }
+      _min_size_integer(integer) {
+        return this._min_size_nbits(bitSize(integer));
+      }
+      _min_size_nbits(nbits) {
+        return Math.ceil(nbits / 8);
+      }
+      async *_iter_indirect_block(fh, offset, nrows) {
+        let header = await _unpack_struct_from_async(this.indirect_block_header, fh, offset);
+        offset += this.indirect_block_header_size;
+        assert(header.get("signature") == "FHIB");
+        let block_offset_bytes = header.get("block_offset");
+        let block_offset = block_offset_bytes.reduce((p, c, i) => p + (c << i * 8), 0);
+        header.set("block_offset", block_offset);
+        let [ndirect, nindirect] = this._indirect_info(nrows);
+        let direct_blocks = [];
+        for (let i = 0; i < ndirect; i++) {
+          let address = (await struct.unpack_from_async("<Q", fh, offset))[0];
+          offset += 8;
+          if (address == UNDEFINED_ADDRESS) {
+            break;
+          }
+          let block_size = this._calc_block_size(i);
+          direct_blocks.push([address, block_size]);
+        }
+        let indirect_blocks = [];
+        for (let i = ndirect; i < ndirect + nindirect; i++) {
+          let address = (await struct.unpack_from_async("<Q", fh, offset))[0];
+          offset += 8;
+          if (address == UNDEFINED_ADDRESS) {
+            break;
+          }
+          let block_size = this._calc_block_size(i);
+          let nrows2 = this._iblock_nrows_from_block_size(block_size);
+          indirect_blocks.push([address, nrows2]);
+        }
+        for (let [address, block_size] of direct_blocks) {
+          let obj = await this._read_direct_block(fh, address, block_size);
+          yield obj;
+        }
+        for (let [address, nrows2] of indirect_blocks) {
+          for await (let obj of this._iter_indirect_block(fh, address, nrows2)) {
+            yield obj;
+          }
+        }
+      }
+      _calc_block_size(iblock) {
+        let row = Math.floor(iblock / this.header.get("table_width"));
+        return 2 ** Math.max(row - 1, 0) * this.header.get("starting_block_size");
+      }
+      _iblock_nrows_from_block_size(block_size) {
+        let log2_block_size = Math.floor(Math.log2(block_size));
+        assert(2 ** log2_block_size == block_size);
+        return log2_block_size - this._indirect_nrows_sub;
+      }
+      _indirect_info(nrows) {
+        let table_width = this.header.get("table_width");
+        let nobjects = nrows * table_width;
+        let ndirect_max = this._max_direct_nrows * table_width;
+        let ndirect, nindirect;
+        if (nrows <= ndirect_max) {
+          ndirect = nobjects;
+          nindirect = 0;
+        } else {
+          ndirect = ndirect_max;
+          nindirect = nobjects - ndirect_max;
+        }
+        return [ndirect, nindirect];
+      }
+      _int_format(bytelength) {
+        return ["B", "H", "I", "Q"][bytelength - 1];
+      }
+    };
+    var FORMAT_SIGNATURE = struct.unpack_from("8s", new Uint8Array([137, 72, 68, 70, 13, 10, 26, 10]).buffer)[0];
+    var UNDEFINED_ADDRESS = struct.unpack_from("<Q", new Uint8Array([255, 255, 255, 255, 255, 255, 255, 255]).buffer)[0];
+    var SUPERBLOCK_V0 = /* @__PURE__ */ new Map([
+      ["format_signature", "8s"],
+      ["superblock_version", "B"],
+      ["free_storage_version", "B"],
+      ["root_group_version", "B"],
+      ["reserved_0", "B"],
+      ["shared_header_version", "B"],
+      ["offset_size", "B"],
+      ["length_size", "B"],
+      ["reserved_1", "B"],
+      ["group_leaf_node_k", "H"],
+      ["group_internal_node_k", "H"],
+      ["file_consistency_flags", "L"],
+      ["base_address_lower", "Q"],
+      ["free_space_address", "Q"],
+      ["end_of_file_address", "Q"],
+      ["driver_information_address", "Q"]
+    ]);
+    var SUPERBLOCK_V0_SIZE = _structure_size(SUPERBLOCK_V0);
+    var SUPERBLOCK_V2_V3 = /* @__PURE__ */ new Map([
+      ["format_signature", "8s"],
+      ["superblock_version", "B"],
+      ["offset_size", "B"],
+      ["length_size", "B"],
+      ["file_consistency_flags", "B"],
+      ["base_address", "Q"],
+      ["superblock_extension_address", "Q"],
+      ["end_of_file_address", "Q"],
+      ["root_group_address", "Q"],
+      ["superblock_checksum", "I"]
+    ]);
+    var SUPERBLOCK_V2_V3_SIZE = _structure_size(SUPERBLOCK_V2_V3);
+    var SYMBOL_TABLE_ENTRY = /* @__PURE__ */ new Map([
+      ["link_name_offset", "Q"],
+      ["object_header_address", "Q"],
+      ["cache_type", "I"],
+      ["reserved", "I"],
+      ["scratch", "16s"]
+    ]);
+    var SYMBOL_TABLE_ENTRY_SIZE = _structure_size(SYMBOL_TABLE_ENTRY);
+    var SYMBOL_TABLE_NODE = /* @__PURE__ */ new Map([
+      ["signature", "4s"],
+      ["version", "B"],
+      ["reserved_0", "B"],
+      ["symbols", "H"]
+    ]);
+    var SYMBOL_TABLE_NODE_SIZE = _structure_size(SYMBOL_TABLE_NODE);
+    var LOCAL_HEAP = /* @__PURE__ */ new Map([
+      ["signature", "4s"],
+      ["version", "B"],
+      ["reserved", "3s"],
+      ["data_segment_size", "Q"],
+      ["offset_to_free_list", "Q"],
+      ["address_of_data_segment", "Q"]
+    ]);
+    var GLOBAL_HEAP_HEADER = /* @__PURE__ */ new Map([
+      ["signature", "4s"],
+      ["version", "B"],
+      ["reserved", "3s"],
+      ["collection_size", "Q"]
+    ]);
+    var GLOBAL_HEAP_HEADER_SIZE = _structure_size(GLOBAL_HEAP_HEADER);
+    var GLOBAL_HEAP_OBJECT = /* @__PURE__ */ new Map([
+      ["object_index", "H"],
+      ["reference_count", "H"],
+      ["reserved", "I"],
+      ["object_size", "Q"]
+    ]);
+    var GLOBAL_HEAP_OBJECT_SIZE = _structure_size(GLOBAL_HEAP_OBJECT);
+    var FRACTAL_HEAP_HEADER = /* @__PURE__ */ new Map([
+      ["signature", "4s"],
+      ["version", "B"],
+      ["object_index_size", "H"],
+      ["filter_info_size", "H"],
+      ["flags", "B"],
+      ["max_managed_object_size", "I"],
+      ["next_huge_object_index", "Q"],
+      ["btree_address_huge_objects", "Q"],
+      ["managed_freespace_size", "Q"],
+      ["freespace_manager_address", "Q"],
+      ["managed_space_size", "Q"],
+      ["managed_alloc_size", "Q"],
+      ["next_directblock_iterator_address", "Q"],
+      ["managed_object_count", "Q"],
+      ["huge_objects_total_size", "Q"],
+      ["huge_object_count", "Q"],
+      ["tiny_objects_total_size", "Q"],
+      ["tiny_object_count", "Q"],
+      ["table_width", "H"],
+      ["starting_block_size", "Q"],
+      ["maximum_direct_block_size", "Q"],
+      ["log2_maximum_heap_size", "H"],
+      ["indirect_starting_rows_count", "H"],
+      ["root_block_address", "Q"],
+      ["indirect_current_rows_count", "H"]
+    ]);
+
+    // esm/dataobjects.js
+    var DataObjects = class {
+      constructor(fh, offset) {
+        this.ready = this.init(fh, offset);
+      }
+      async init(fh, offset) {
+        let version_hint = (await struct.unpack_from_async("<B", fh, offset))[0];
+        if (version_hint == 1) {
+          var [msgs, msg_data, header] = await this._parse_v1_objects(fh, offset);
+        } else if (version_hint == "O".charCodeAt(0)) {
+          var [msgs, msg_data, header] = await this._parse_v2_objects(fh, offset);
+        } else {
+          throw "InvalidHDF5File('unknown Data Object Header')";
+        }
+        this.fh = fh;
+        this.msgs = msgs;
+        this.msg_data = msg_data;
+        this.offset = offset;
+        this._global_heaps = {};
+        this._header = header;
+        this._filter_pipeline = null;
+        this._chunk_params_set = false;
+        this._chunks = null;
+        this._chunk_dims = null;
+        this._chunk_address = null;
+      }
+      get dtype() {
+        let msg = this.find_msg_type(DATATYPE_MSG_TYPE)[0];
+        let msg_offset = msg.get("offset_to_message");
+        return new DatatypeMessage(this.fh, msg_offset).dtype;
+      }
+      get chunks() {
+        return this._get_chunk_params().then(() => {
+          return this._chunks;
+        });
+      }
+      get shape() {
+        let msg = this.find_msg_type(DATASPACE_MSG_TYPE)[0];
+        let msg_offset = msg.get("offset_to_message");
+        return determine_data_shape(this.fh, msg_offset);
+      }
+      async get_filter_pipeline() {
+        if (this._filter_pipeline != null) {
+          return this._filter_pipeline;
+        }
+        let filter_msgs = this.find_msg_type(DATA_STORAGE_FILTER_PIPELINE_MSG_TYPE);
+        if (!filter_msgs.length) {
+          this._filter_pipeline = null;
+          return this._filter_pipeline;
+        }
+        var offset = filter_msgs[0].get("offset_to_message");
+        let [version, nfilters] = await struct.unpack_from_async("<BB", this.fh, offset);
+        offset += struct.calcsize("<BB");
+        var filters = [];
+        if (version == 1) {
+          await struct.unpack_from_async("<HI", this.fh, offset);
+          offset += struct.calcsize("<HI");
+          for (var _ = 0; _ < nfilters; _++) {
+            let filter_info = await _unpack_struct_from_async(FILTER_PIPELINE_DESCR_V1, this.fh, offset);
+            offset += FILTER_PIPELINE_DESCR_V1_SIZE;
+            let padded_name_length = _padded_size(filter_info.get("name_length"), 8);
+            let fmt = "<" + padded_name_length.toFixed() + "s";
+            let filter_name = (await struct.unpack_from_async(fmt, this.fh, offset))[0];
+            filter_info.set("filter_name", filter_name);
+            offset += padded_name_length;
+            fmt = "<" + filter_info.get("client_data_values").toFixed() + "I";
+            let client_data = await struct.unpack_from_async(fmt, this.fh, offset);
+            filter_info.set("client_data", client_data);
+            offset += 4 * filter_info.get("client_data_values");
+            if (filter_info.get("client_data_values") % 2) {
+              offset += 4;
+            }
+            filters.push(filter_info);
+          }
+        } else if (version == 2) {
+          for (let nf = 0; nf < nfilters; nf++) {
+            let filter_info = /* @__PURE__ */ new Map();
+            let buf = this.fh;
+            let filter_id = (await struct.unpack_from_async("<H", buf, offset))[0];
+            offset += 2;
+            filter_info.set("filter_id", filter_id);
+            let name_length = 0;
+            if (filter_id > 255) {
+              name_length = (await struct.unpack_from_async("<H", buf, offset))[0];
+              offset += 2;
+            }
+            let flags = (await struct.unpack_from_async("<H", buf, offset))[0];
+            offset += 2;
+            let optional = (flags & 1) > 0;
+            filter_info.set("optional", optional);
+            let num_client_values = (await struct.unpack_from_async("<H", buf, offset))[0];
+            offset += 2;
+            let name;
+            if (name_length > 0) {
+              name = (await struct.unpack_from_async(`${name_length}s`, buf, offset))[0];
+              offset += name_length;
+            }
+            filter_info.set("name", name);
+            let client_values = await struct.unpack_from_async(`<${num_client_values}i`, buf, offset);
+            offset += 4 * num_client_values;
+            filter_info.set("client_data_values", client_values);
+            filters.push(filter_info);
+          }
+        } else {
+          throw `version ${version} is not supported`;
+        }
+        this._filter_pipeline = filters;
+        return this._filter_pipeline;
+      }
+      find_msg_type(msg_type) {
+        return this.msgs.filter(function(m) {
+          return m.get("type") == msg_type;
+        });
+      }
+      async get_attributes() {
+        let attrs = {};
+        let attr_msgs = this.find_msg_type(ATTRIBUTE_MSG_TYPE);
+        for (let msg of attr_msgs) {
+          let offset = msg.get("offset_to_message");
+          let [name, value] = await this.unpack_attribute(offset);
+          attrs[name] = value;
+        }
+        return attrs;
+      }
+      async get_fillvalue() {
+        let msg = this.find_msg_type(FILLVALUE_MSG_TYPE)[0];
+        var offset = msg.get("offset_to_message");
+        var is_defined;
+        let version = (await struct.unpack_from_async("<B", this.fh, offset))[0];
+        var info, size, fillvalue;
+        if (version == 1 || version == 2) {
+          info = await _unpack_struct_from_async(FILLVAL_MSG_V1V2, this.fh, offset);
+          offset += FILLVAL_MSG_V1V2_SIZE;
+          is_defined = info.get("fillvalue_defined");
+        } else if (version == 3) {
+          info = await _unpack_struct_from_async(FILLVAL_MSG_V3, this.fh, offset);
+          offset += FILLVAL_MSG_V3_SIZE;
+          is_defined = info.get("flags") & 32;
+        } else {
+          throw 'InvalidHDF5File("Unknown fillvalue msg version: "' + String(version);
+        }
+        if (is_defined) {
+          size = (await struct.unpack_from_async("<I", this.fh, offset))[0];
+          offset += 4;
+        } else {
+          size = 0;
+        }
+        if (size) {
+          let [getter, big_endian, size2] = dtype_getter(await this.dtype);
+          let payload_view = new DataView64(await this.fh.slice(offset, offset + size2));
+          fillvalue = payload_view[getter](offset, !big_endian, size2);
+        } else {
+          fillvalue = 0;
+        }
+        return fillvalue;
+      }
+      async unpack_attribute(offset) {
+        let version = (await struct.unpack_from_async("<B", this.fh, offset))[0];
+        var attr_map, padding_multiple;
+        if (version == 1) {
+          attr_map = await _unpack_struct_from_async(ATTR_MSG_HEADER_V1, this.fh, offset);
+          assert(attr_map.get("version") == 1);
+          offset += ATTR_MSG_HEADER_V1_SIZE;
+          padding_multiple = 8;
+        } else if (version == 3) {
+          attr_map = await _unpack_struct_from_async(ATTR_MSG_HEADER_V3, this.fh, offset);
+          assert(attr_map.get("version") == 3);
+          offset += ATTR_MSG_HEADER_V3_SIZE;
+          padding_multiple = 1;
+        } else {
+          throw "unsupported attribute message version: " + version;
+        }
+        let name_size = attr_map.get("name_size");
+        let name = (await struct.unpack_from_async("<" + name_size.toFixed() + "s", this.fh, offset))[0];
+        name = name.replace(/\x00$/, "");
+        offset += _padded_size(name_size, padding_multiple);
+        var dtype;
+        try {
+          dtype = await new DatatypeMessage(this.fh, offset).dtype;
+        } catch (e) {
+          console.warn("Attribute " + name + " type not implemented, set to null.");
+          return [name, null];
+        }
+        offset += _padded_size(attr_map.get("datatype_size"), padding_multiple);
+        let shape = await this.determine_data_shape(this.fh, offset);
+        let items = shape.reduce(function(a, b) {
+          return a * b;
+        }, 1);
+        offset += _padded_size(attr_map.get("dataspace_size"), padding_multiple);
+        if (dtype.datatype_class === 5) {
+          value = await this.fh.slice(offset, offset + dtype.size);
+        } else {
+          var value = await this._attr_value(dtype, this.fh, items, offset);
+          if (shape.length == 0) {
+            value = value[0];
+          }
+        }
+        return [name, value];
+      }
+      async determine_data_shape(buf, offset) {
+        let version = (await struct.unpack_from_async("<B", buf, offset))[0];
+        var header;
+        if (version == 1) {
+          header = await _unpack_struct_from_async(DATASPACE_MSG_HEADER_V1, buf, offset);
+          assert(header.get("version") == 1);
+          offset += DATASPACE_MSG_HEADER_V1_SIZE;
+        } else if (version == 2) {
+          header = await _unpack_struct_from_async(DATASPACE_MSG_HEADER_V2, buf, offset);
+          assert(header.get("version") == 2);
+          offset += DATASPACE_MSG_HEADER_V2_SIZE;
+        } else {
+          throw "unknown dataspace message version";
+        }
+        let ndims = header.get("dimensionality");
+        let dim_sizes = await struct.unpack_from_async("<" + ndims.toFixed() + "Q", buf, offset);
+        return dim_sizes;
+      }
+      async _attr_value(dtype, buf, count, offset) {
+        var value = new Array(count);
+        if (dtype instanceof Array) {
+          let dtype_class = dtype[0];
+          for (var i = 0; i < count; i++) {
+            if (dtype_class == "VLEN_STRING") {
+              let character_set = dtype[2];
+              var [vlen, vlen_data] = await this._vlen_size_and_data(buf, offset);
+              const encoding = character_set == 0 ? "ascii" : "utf-8";
+              const decoder = new TextDecoder(encoding);
+              value[i] = decoder.decode(vlen_data);
+              offset += 16;
+            } else if (dtype_class == "REFERENCE") {
+              var address = await struct.unpack_from_async("<Q", buf, offset);
+              value[i] = address;
+              offset += 8;
+            } else if (dtype_class == "VLEN_SEQUENCE") {
+              let base_dtype = dtype[1];
+              var [vlen, vlen_data] = this._vlen_size_and_data(buf, offset);
+              value[i] = this._attr_value(base_dtype, vlen_data, vlen, 0);
+              offset += 16;
+            } else {
+              throw "NotImplementedError";
+            }
+          }
+        } else {
+          let [getter, big_endian, size] = dtype_getter(dtype);
+          const arrayBuffer = await buf.slice(offset, offset + count * size);
+          let view = new DataView64(arrayBuffer, 0);
+          let bufferOffset = 0;
+          for (var i = 0; i < count; i++) {
+            value[i] = view[getter](bufferOffset, !big_endian, size);
+            bufferOffset += size;
+          }
+        }
+        return value;
+      }
+      async _vlen_size_and_data(buf, offset) {
+        let vlen_size = (await struct.unpack_from_async("<I", buf, offset))[0];
+        let gheap_id = await _unpack_struct_from_async(GLOBAL_HEAP_ID, buf, offset + 4);
+        let gheap_address = gheap_id.get("collection_address");
+        assert(gheap_id.get("collection_address") < Number.MAX_SAFE_INTEGER);
+        var gheap;
+        if (!(gheap_address in this._global_heaps)) {
+          gheap = new GlobalHeap(this.fh, gheap_address);
+          await gheap.ready;
+          this._global_heaps[gheap_address] = gheap;
+        }
+        gheap = this._global_heaps[gheap_address];
+        let vlen_data = gheap.objects.get(gheap_id.get("object_index"));
+        return [vlen_size, vlen_data];
+      }
+      async _parse_v1_objects(fh, offset) {
+        let header = await _unpack_struct_from_async(OBJECT_HEADER_V1, fh, offset);
+        assert(header.get("version") == 1);
+        let total_header_messages = header.get("total_header_messages");
+        var block_size = header.get("object_header_size");
+        var block_offset = offset + _structure_size(OBJECT_HEADER_V1);
+        var msg_data = await fh.slice(block_offset, block_offset + block_size);
+        var object_header_blocks = [[block_offset, block_size]];
+        var current_block = 0;
+        var local_offset = 0;
+        var msgs = new Array(total_header_messages);
+        for (var i = 0; i < total_header_messages; i++) {
+          if (local_offset >= block_size) {
+            [block_offset, block_size] = object_header_blocks[++current_block];
+            local_offset = 0;
+          }
+          let msg = await _unpack_struct_from_async(HEADER_MSG_INFO_V1, fh, block_offset + local_offset);
+          let offset_to_message = block_offset + local_offset + HEADER_MSG_INFO_V1_SIZE;
+          msg.set("offset_to_message", offset_to_message);
+          if (msg.get("type") == OBJECT_CONTINUATION_MSG_TYPE) {
+            var [fh_off, size] = await struct.unpack_from_async("<QQ", fh, offset_to_message);
+            object_header_blocks.push([fh_off, size]);
+          }
+          local_offset += HEADER_MSG_INFO_V1_SIZE + msg.get("size");
+          msgs[i] = msg;
+        }
+        return [msgs, msg_data, header];
+      }
+      async _parse_v2_objects(buf, offset) {
+        var [header, creation_order_size, block_offset] = await this._parse_v2_header(buf, offset);
+        offset = block_offset;
+        var msgs = [];
+        var block_size = header.get("size_of_chunk_0");
+        var msg_data = buf.slice(offset, offset += block_size);
+        var object_header_blocks = [[block_offset, block_size]];
+        var current_block = 0;
+        var local_offset = 0;
+        while (true) {
+          if (local_offset >= block_size - HEADER_MSG_INFO_V2_SIZE) {
+            let next_block = object_header_blocks[++current_block];
+            if (next_block == null) {
+              break;
+            }
+            [block_offset, block_size] = next_block;
+            local_offset = 0;
+          }
+          let msg = await _unpack_struct_from_async(HEADER_MSG_INFO_V2, buf, block_offset + local_offset);
+          let offset_to_message = block_offset + local_offset + HEADER_MSG_INFO_V2_SIZE + creation_order_size;
+          msg.set("offset_to_message", offset_to_message);
+          if (msg.get("type") == OBJECT_CONTINUATION_MSG_TYPE) {
+            var [fh_off, size] = await struct.unpack_from_async("<QQ", buf, offset_to_message);
+            object_header_blocks.push([fh_off + 4, size - 4]);
+          }
+          local_offset += HEADER_MSG_INFO_V2_SIZE + msg.get("size") + creation_order_size;
+          msgs.push(msg);
+        }
+        return [msgs, msg_data, header];
+      }
+      async _parse_v2_header(buf, offset) {
+        let header = await _unpack_struct_from_async(OBJECT_HEADER_V2, buf, offset);
+        var creation_order_size;
+        offset += _structure_size(OBJECT_HEADER_V2);
+        assert(header.get("version") == 2);
+        if (header.get("flags") & 4) {
+          creation_order_size = 2;
+        } else {
+          creation_order_size = 0;
+        }
+        assert((header.get("flags") & 16) == 0);
+        if (header.get("flags") & 32) {
+          let times = await struct.unpack_from_async("<4I", buf, offset);
+          offset += 16;
+          header.set("access_time", times[0]);
+          header.set("modification_time", times[1]);
+          header.set("change_time", times[2]);
+          header.set("birth_time", times[3]);
+        }
+        let chunk_fmt = ["<B", "<H", "<I", "<Q"][header.get("flags") & 3];
+        header.set("size_of_chunk_0", (await struct.unpack_from_async(chunk_fmt, buf, offset))[0]);
+        offset += struct.calcsize(chunk_fmt);
+        return [header, creation_order_size, offset];
+      }
+      async find_link(name) {
+        if (this._links) {
+          for (link of this._links) {
+            if (name === link[0]) {
+              return link;
+            }
+          }
+        } else {
+          const links = [];
+          for await (const link2 of this.iter_links()) {
+            if (name === link2[0]) {
+              return link2;
+            }
+            links.push(link2);
+          }
+          this._links = links;
+        }
+        return void 0;
+      }
+      async get_links() {
+        const links = [];
+        for await (const link2 of this.iter_links()) {
+          links.push(link2);
+        }
+        return Object.fromEntries(links);
+      }
+      async *iter_links() {
+        for (let msg of this.msgs) {
+          if (msg.get("type") == SYMBOL_TABLE_MSG_TYPE) {
+            yield* this._iter_links_from_symbol_tables(msg);
+          } else if (msg.get("type") == LINK_MSG_TYPE) {
+            yield this._get_link_from_link_msg(msg);
+          } else if (msg.get("type") == LINK_INFO_MSG_TYPE) {
+            yield* this._iter_link_from_link_info_msg(msg);
+          }
+        }
+      }
+      async *_iter_links_from_symbol_tables(sym_tbl_msg) {
+        assert(sym_tbl_msg.get("size") == 16);
+        let data = await _unpack_struct_from_async(SYMBOL_TABLE_MSG, this.fh, sym_tbl_msg.get("offset_to_message"));
+        yield* this._iter_links_btree_v1(data.get("btree_address"), data.get("heap_address"));
+      }
+      async *_iter_links_btree_v1(btree_address, heap_address) {
+        let btree = new BTreeV1Groups(this.fh, btree_address);
+        await btree.ready;
+        let heap = new Heap(this.fh, heap_address);
+        await heap.ready;
+        for (let symbol_table_address of btree.symbol_table_addresses()) {
+          let table = new SymbolTable(this.fh, symbol_table_address);
+          await table.ready;
+          table.assign_name(heap);
+          yield* Object.entries(table.get_links(heap));
+        }
+      }
+      async _get_link_from_link_msg(link_msg) {
+        let offset = link_msg.get("offset_to_message");
+        return await this._decode_link_msg(this.fh, offset)[1];
+      }
+      async _decode_link_msg(data, offset) {
+        let [version, flags] = await struct.unpack_from_async("<BB", data, offset);
+        offset += 2;
+        assert(version == 1);
+        let size_of_length_of_link_name = 2 ** (flags & 3);
+        let link_type_field_present = (flags & 2 ** 3) > 0;
+        let link_name_character_set_field_present = (flags & 2 ** 4) > 0;
+        let ordered = (flags & 2 ** 2) > 0;
+        let link_type;
+        if (link_type_field_present) {
+          link_type = (await struct.unpack_from_async("<B", data, offset))[0];
+          offset += 1;
+        } else {
+          link_type = 0;
+        }
+        assert([0, 1].includes(link_type));
+        let creationorder;
+        if (ordered) {
+          creationorder = (await struct.unpack_from_async("<Q", data, offset))[0];
+          offset += 8;
+        }
+        let link_name_character_set = 0;
+        if (link_name_character_set_field_present) {
+          link_name_character_set = (await struct.unpack_from_async("<B", data, offset))[0];
+          offset += 1;
+        }
+        let encoding = link_name_character_set == 0 ? "ascii" : "utf-8";
+        let name_size_fmt = ["<B", "<H", "<I", "<Q"][flags & 3];
+        let name_size = (await struct.unpack_from_async(name_size_fmt, data, offset))[0];
+        offset += size_of_length_of_link_name;
+        let name = new TextDecoder(encoding).decode(await data.slice(offset, offset + name_size));
+        offset += name_size;
+        let address;
+        if (link_type == 0) {
+          address = (await struct.unpack_from_async("<Q", data, offset))[0];
+        } else if (link_type == 1) {
+          let length_of_soft_link_value = (await struct.unpack_from_async("<H", data, offset))[0];
+          offset += 2;
+          address = new TextDecoder(encoding).decode(await data.slice(offset, offset + length_of_soft_link_value));
+        }
+        return [creationorder, [name, address]];
+      }
+      async *_iter_link_from_link_info_msg(info_msg) {
+        let offset = info_msg.get("offset_to_message");
+        let data = await this._decode_link_info_msg(this.fh, offset);
+        let heap_address = data.get("heap_address");
+        let name_btree_address = data.get("name_btree_address");
+        let order_btree_address = data.get("order_btree_address");
+        if (name_btree_address != null) {
+          yield* this._iter_links_btree_v2(name_btree_address, order_btree_address, heap_address);
+        }
+      }
+      async *_iter_links_btree_v2(name_btree_address, order_btree_address, heap_address) {
+        let heap = new FractalHeap(this.fh, heap_address);
+        await heap.ready;
+        let btree;
+        const ordered = order_btree_address != null;
+        if (ordered) {
+          btree = new BTreeV2GroupOrders(this.fh, order_btree_address);
+          await btree.ready;
+        } else {
+          btree = new BTreeV2GroupNames(this.fh, name_btree_address);
+          await btree.ready;
+        }
+        let items = /* @__PURE__ */ new Map();
+        for (let record of btree.iter_records()) {
+          let data = heap.get_data(record.get("heapid"));
+          let [creationorder, item] = await this._decode_link_msg(data, 0);
+          const key = ordered ? creationorder : item[0];
+          items.set(key, item);
+        }
+        let sorted_keys = Array.from(items.keys()).sort();
+        for (let key of sorted_keys) {
+          yield items.get(key);
+        }
+      }
+      async _decode_link_info_msg(data, offset) {
+        let [version, flags] = await struct.unpack_from_async("<BB", data, offset);
+        assert(version == 0);
+        offset += 2;
+        if ((flags & 1) > 0) {
+          offset += 8;
+        }
+        let fmt = (flags & 2) > 0 ? LINK_INFO_MSG2 : LINK_INFO_MSG1;
+        let link_info = await _unpack_struct_from_async(fmt, data, offset);
+        let output = /* @__PURE__ */ new Map();
+        for (let [k, v] of link_info.entries()) {
+          output.set(k, v == UNDEFINED_ADDRESS2 ? null : v);
+        }
+        return output;
+      }
+      get is_dataset() {
+        return this.find_msg_type(DATASPACE_MSG_TYPE).length > 0;
+      }
+      async get_data() {
+        let msg = this.find_msg_type(DATA_STORAGE_MSG_TYPE)[0];
+        let msg_offset = msg.get("offset_to_message");
+        var [version, dims, layout_class, property_offset] = await this._get_data_message_properties(msg_offset);
+        if (layout_class == 0) {
+          throw "Compact storage of DataObject not implemented";
+        } else if (layout_class == 1) {
+          return this._get_contiguous_data(property_offset);
+        } else if (layout_class == 2) {
+          return this._get_chunked_data(msg_offset);
+        }
+      }
+      async _get_data_message_properties(msg_offset) {
+        let dims, layout_class, property_offset;
+        let [version, arg1, arg2] = await struct.unpack_from_async("<BBB", this.fh, msg_offset);
+        if (version == 1 || version == 2) {
+          dims = arg1;
+          layout_class = arg2;
+          property_offset = msg_offset;
+          property_offset += struct.calcsize("<BBB");
+          property_offset += struct.calcsize("<BI");
+          assert(layout_class == 1 || layout_class == 2);
+        } else if (version == 3 || version == 4) {
+          layout_class = arg1;
+          property_offset = msg_offset;
+          property_offset += struct.calcsize("<BB");
+        }
+        assert(version >= 1 && version <= 4);
+        return [version, dims, layout_class, property_offset];
+      }
+      async _get_contiguous_data(property_offset) {
+        let [data_offset] = await struct.unpack_from_async("<Q", this.fh, property_offset);
+        const shape = await this.shape;
+        const dtype = await this.dtype;
+        if (data_offset == UNDEFINED_ADDRESS2) {
+          let size = shape.reduce(function(a, b) {
+            return a * b;
+          }, 1);
+          return new Array(size);
+        }
+        var fullsize = shape.reduce(function(a, b) {
+          return a * b;
+        }, 1);
+        if (!(dtype instanceof Array)) {
+          if (/[<>=!@\|]?(i|u|f|S)(\d*)/.test(dtype)) {
+            let [item_getter, item_is_big_endian, item_size] = dtype_getter(dtype);
+            let output = new Array(fullsize);
+            const local_buffer = await this.fh.slice(data_offset, data_offset + item_size * fullsize);
+            let view = new DataView64(local_buffer);
+            for (var i = 0; i < fullsize; i++) {
+              output[i] = view[item_getter](i * item_size, !item_is_big_endian, item_size);
+            }
+            return output;
+          } else if (dtype.datatype_class === 5) {
+            return this.fh.slice(data_offset, data_offset + dtype.size);
+          } else {
+            throw "not Implemented - no proper dtype defined";
+          }
+        } else {
+          let dtype_class = dtype[0];
+          if (dtype_class == "REFERENCE") {
+            let size = dtype[1];
+            if (size != 8) {
+              throw "NotImplementedError('Unsupported Reference type')";
+            }
+            let ref_addresses = await this.fh.slice(data_offset, data_offset + fullsize);
+            return ref_addresses;
+          } else if (dtype_class == "VLEN_STRING") {
+            let character_set = dtype[2];
+            const encoding = character_set == 0 ? "ascii" : "utf-8";
+            const decoder = new TextDecoder(encoding);
+            var value = [];
+            for (var i = 0; i < fullsize; i++) {
+              const [vlen, vlen_data] = await this._vlen_size_and_data(this.fh, data_offset);
+              value[i] = decoder.decode(vlen_data);
+              data_offset += 16;
+            }
+            return value;
+          } else {
+            throw "NotImplementedError('datatype not implemented')";
+          }
+        }
+      }
+      async _get_chunked_data(offset) {
+        await this._get_chunk_params();
+        if (this._chunk_address == UNDEFINED_ADDRESS2) {
+          return [];
+        }
+        var chunk_btree = new BTreeV1RawDataChunks(this.fh, this._chunk_address, this._chunk_dims);
+        await chunk_btree.ready;
+        const dtype = await this.dtype;
+        const shape = await this.shape;
+        const chunks = await this.chunks;
+        const filter_pipeline = await this.get_filter_pipeline();
+        let data = await chunk_btree.construct_data_from_chunks(chunks, shape, dtype, filter_pipeline);
+        if (dtype instanceof Array && /^VLEN/.test(dtype[0])) {
+          let dtype_class = dtype[0];
+          for (var i = 0; i < data.length; i++) {
+            let [item_size, gheap_address, object_index] = data[i];
+            var gheap;
+            if (!(gheap_address in this._global_heaps)) {
+              gheap = new GlobalHeap(this.fh, gheap_address);
+              await gheap.ready;
+              this._global_heaps[gheap_address] = gheap;
+            } else {
+              gheap = this._global_heaps[gheap_address];
+            }
+            let vlen_data = gheap.objects.get(object_index);
+            if (dtype_class == "VLEN_STRING") {
+              let character_set = dtype[2];
+              const encoding = character_set == 0 ? "ascii" : "utf-8";
+              const decoder = new TextDecoder(encoding);
+              data[i] = decoder.decode(vlen_data);
+            }
+          }
+        }
+        return data;
+      }
+      async _get_chunk_params() {
+        if (this._chunk_params_set) {
+          return;
+        }
+        this._chunk_params_set = true;
+        var msg = this.find_msg_type(DATA_STORAGE_MSG_TYPE)[0];
+        var offset = msg.get("offset_to_message");
+        var [version, dims, layout_class, property_offset] = await this._get_data_message_properties(offset);
+        if (layout_class != 2) {
+          return;
+        }
+        var data_offset;
+        if (version == 1 || version == 2) {
+          var address = (await struct.unpack_from_async("<Q", this.fh, property_offset))[0];
+          data_offset = property_offset + struct.calcsize("<Q");
+        } else if (version == 3) {
+          var [dims, address] = await struct.unpack_from_async("<BQ", this.fh, property_offset);
+          data_offset = property_offset + struct.calcsize("<BQ");
+        }
+        assert(version >= 1 && version <= 3);
+        var fmt = "<" + (dims - 1).toFixed() + "I";
+        var chunk_shape = await struct.unpack_from_async(fmt, this.fh, data_offset);
+        this._chunks = chunk_shape;
+        this._chunk_dims = dims;
+        this._chunk_address = address;
+        return;
+      }
+    };
+    async function determine_data_shape(buf, offset) {
+      let version = (await struct.unpack_from_async("<B", buf, offset))[0];
+      var header;
+      if (version == 1) {
+        header = await _unpack_struct_from_async(DATASPACE_MSG_HEADER_V1, buf, offset);
+        assert(header.get("version") == 1);
+        offset += DATASPACE_MSG_HEADER_V1_SIZE;
+      } else if (version == 2) {
+        header = await _unpack_struct_from_async(DATASPACE_MSG_HEADER_V2, buf, offset);
+        assert(header.get("version") == 2);
+        offset += DATASPACE_MSG_HEADER_V2_SIZE;
+      } else {
+        throw "InvalidHDF5File('unknown dataspace message version')";
+      }
+      let ndims = header.get("dimensionality");
+      let dim_sizes = await struct.unpack_from_async("<" + (ndims * 2).toFixed() + "I", buf, offset);
+      return dim_sizes.filter(function(s, i) {
+        return i % 2 == 0;
+      });
+    }
+    var UNDEFINED_ADDRESS2 = struct.unpack_from("<Q", new Uint8Array([255, 255, 255, 255, 255, 255, 255, 255]).buffer);
+    var GLOBAL_HEAP_ID = /* @__PURE__ */ new Map([
+      ["collection_address", "Q"],
+      ["object_index", "I"]
+    ]);
+    _structure_size(GLOBAL_HEAP_ID);
+    var ATTR_MSG_HEADER_V1 = /* @__PURE__ */ new Map([
+      ["version", "B"],
+      ["reserved", "B"],
+      ["name_size", "H"],
+      ["datatype_size", "H"],
+      ["dataspace_size", "H"]
+    ]);
+    var ATTR_MSG_HEADER_V1_SIZE = _structure_size(ATTR_MSG_HEADER_V1);
+    var ATTR_MSG_HEADER_V3 = /* @__PURE__ */ new Map([
+      ["version", "B"],
+      ["flags", "B"],
+      ["name_size", "H"],
+      ["datatype_size", "H"],
+      ["dataspace_size", "H"],
+      ["character_set_encoding", "B"]
+    ]);
+    var ATTR_MSG_HEADER_V3_SIZE = _structure_size(ATTR_MSG_HEADER_V3);
+    var OBJECT_HEADER_V1 = /* @__PURE__ */ new Map([
+      ["version", "B"],
+      ["reserved", "B"],
+      ["total_header_messages", "H"],
+      ["object_reference_count", "I"],
+      ["object_header_size", "I"],
+      ["padding", "I"]
+    ]);
+    var OBJECT_HEADER_V2 = /* @__PURE__ */ new Map([
+      ["signature", "4s"],
+      ["version", "B"],
+      ["flags", "B"]
+    ]);
+    var DATASPACE_MSG_HEADER_V1 = /* @__PURE__ */ new Map([
+      ["version", "B"],
+      ["dimensionality", "B"],
+      ["flags", "B"],
+      ["reserved_0", "B"],
+      ["reserved_1", "I"]
+    ]);
+    var DATASPACE_MSG_HEADER_V1_SIZE = _structure_size(DATASPACE_MSG_HEADER_V1);
+    var DATASPACE_MSG_HEADER_V2 = /* @__PURE__ */ new Map([
+      ["version", "B"],
+      ["dimensionality", "B"],
+      ["flags", "B"],
+      ["type", "B"]
+    ]);
+    var DATASPACE_MSG_HEADER_V2_SIZE = _structure_size(DATASPACE_MSG_HEADER_V2);
+    var HEADER_MSG_INFO_V1 = /* @__PURE__ */ new Map([
+      ["type", "H"],
+      ["size", "H"],
+      ["flags", "B"],
+      ["reserved", "3s"]
+    ]);
+    var HEADER_MSG_INFO_V1_SIZE = _structure_size(HEADER_MSG_INFO_V1);
+    var HEADER_MSG_INFO_V2 = /* @__PURE__ */ new Map([
+      ["type", "B"],
+      ["size", "H"],
+      ["flags", "B"]
+    ]);
+    var HEADER_MSG_INFO_V2_SIZE = _structure_size(HEADER_MSG_INFO_V2);
+    var SYMBOL_TABLE_MSG = /* @__PURE__ */ new Map([
+      ["btree_address", "Q"],
+      ["heap_address", "Q"]
+    ]);
+    var LINK_INFO_MSG1 = /* @__PURE__ */ new Map([
+      ["heap_address", "Q"],
+      ["name_btree_address", "Q"]
+    ]);
+    var LINK_INFO_MSG2 = /* @__PURE__ */ new Map([
+      ["heap_address", "Q"],
+      ["name_btree_address", "Q"],
+      ["order_btree_address", "Q"]
+    ]);
+    var FILLVAL_MSG_V1V2 = /* @__PURE__ */ new Map([
+      ["version", "B"],
+      ["space_allocation_time", "B"],
+      ["fillvalue_write_time", "B"],
+      ["fillvalue_defined", "B"]
+    ]);
+    var FILLVAL_MSG_V1V2_SIZE = _structure_size(FILLVAL_MSG_V1V2);
+    var FILLVAL_MSG_V3 = /* @__PURE__ */ new Map([
+      ["version", "B"],
+      ["flags", "B"]
+    ]);
+    var FILLVAL_MSG_V3_SIZE = _structure_size(FILLVAL_MSG_V3);
+    var FILTER_PIPELINE_DESCR_V1 = /* @__PURE__ */ new Map([
+      ["filter_id", "H"],
+      ["name_length", "H"],
+      ["flags", "H"],
+      ["client_data_values", "H"]
+    ]);
+    var FILTER_PIPELINE_DESCR_V1_SIZE = _structure_size(FILTER_PIPELINE_DESCR_V1);
+    var DATASPACE_MSG_TYPE = 1;
+    var LINK_INFO_MSG_TYPE = 2;
+    var DATATYPE_MSG_TYPE = 3;
+    var FILLVALUE_MSG_TYPE = 5;
+    var LINK_MSG_TYPE = 6;
+    var DATA_STORAGE_MSG_TYPE = 8;
+    var DATA_STORAGE_FILTER_PIPELINE_MSG_TYPE = 11;
+    var ATTRIBUTE_MSG_TYPE = 12;
+    var OBJECT_CONTINUATION_MSG_TYPE = 16;
+    var SYMBOL_TABLE_MSG_TYPE = 17;
+
+    // esm/high-level.js
+    var Group = class {
+      constructor(name, parent) {
+        if (parent == null) {
+          this.parent = this;
+          this.file = this;
+        } else {
+          this.parent = parent;
+          this.file = parent.file;
+        }
+        this.name = name;
+      }
+      async init(dataobjects) {
+        const index = this.file.index;
+        if (index && this.name in index) {
+          this._links = index[this.name];
+        } else {
+          this._links = await dataobjects.get_links();
+        }
+        this._dataobjects = dataobjects;
+        this._attrs = null;
+        this._keys = null;
+      }
+      get keys() {
+        if (this._keys == null) {
+          this._keys = Object.keys(this._links);
+        }
+        return this._keys.slice();
+      }
+      get values() {
+        return this.keys.map((k) => this.get(k));
+      }
+      length() {
+        return this.keys.length;
+      }
+      _dereference(ref) {
+        if (!ref) {
+          throw "cannot deference null reference";
+        }
+        let obj = this.file._get_object_by_address(ref);
+        if (obj == null) {
+          throw "reference not found in file";
+        }
+        return obj;
+      }
+      async get(y) {
+        if (typeof y == "number") {
+          return this._dereference(y);
+        }
+        var path = normpath(y);
+        if (path == "/") {
+          return this.file;
+        }
+        if (path == ".") {
+          return this;
+        }
+        if (/^\//.test(path)) {
+          return this.file.get(path.slice(1));
+        }
+        if (posix_dirname(path) != "") {
+          var [next_obj, additional_obj] = path.split(/\/(.*)/);
+        } else {
+          var next_obj = path;
+          var additional_obj = ".";
+        }
+        if (!(next_obj in this._links)) {
+          throw next_obj + " not found in group";
+        }
+        var obj_name = normpath(this.name + "/" + next_obj);
+        let link_target = this._links[next_obj];
+        if (typeof link_target == "string") {
+          try {
+            return this.get(link_target);
+          } catch (error) {
+            return null;
+          }
+        }
+        var dataobjs = new DataObjects(this.file._fh, link_target);
+        await dataobjs.ready;
+        if (dataobjs.is_dataset) {
+          if (additional_obj != ".") {
+            throw obj_name + " is a dataset, not a group";
+          }
+          return new Dataset(obj_name, dataobjs, this);
+        } else {
+          var new_group = new Group(obj_name, this);
+          await new_group.init(dataobjs);
+          return new_group.get(additional_obj);
+        }
+      }
+      visit(func) {
+        return this.visititems((name, obj) => func(name));
+      }
+      visititems(func) {
+        var root_name_length = this.name.length;
+        if (!/\/$/.test(this.name)) {
+          root_name_length += 1;
+        }
+        var queue = this.values.slice();
+        while (queue) {
+          let obj = queue.shift();
+          if (queue.length == 1)
+            console.log(obj);
+          let name = obj.name.slice(root_name_length);
+          let ret = func(name, obj);
+          if (ret != null) {
+            return ret;
+          }
+          if (obj instanceof Group) {
+            queue = queue.concat(obj.values);
+          }
+        }
+        return null;
+      }
+      get attrs() {
+        if (this._attrs == null) {
+          this._attrs = this._dataobjects.get_attributes();
+        }
+        return this._attrs;
+      }
+    };
+    var File$1 = class extends Group {
+      constructor(fh, filename, options) {
+        super("/", null);
+        this.ready = this.init(fh, filename, options);
+      }
+      async init(fh, filename, options) {
+        var superblock = new SuperBlock(fh, 0);
+        await superblock.ready;
+        var offset = await superblock.get_offset_to_dataobjects();
+        var dataobjects = new DataObjects(fh, offset);
+        await dataobjects.ready;
+        this.parent = this;
+        this.file = this;
+        this.name = "/";
+        this._dataobjects = dataobjects;
+        this._attrs = null;
+        this._keys = null;
+        this._fh = fh;
+        this.filename = filename || "";
+        this.mode = "r";
+        this.userblock_size = 0;
+        if (options && options.index) {
+          this.index = options.index;
+        } else {
+          let index_offset;
+          if (options && options.indexOffset) {
+            index_offset = options.indexOffset;
+          } else {
+            const attrs = await this.attrs;
+            if (attrs.hasOwnProperty("_index_offset")) {
+              index_offset = attrs["_index_offset"];
+            } else {
+              const indexName = this.indexName || "_index";
+              const index_link = await dataobjects.find_link(indexName);
+              if (index_link) {
+                index_offset = index_link[1];
+              }
+            }
+          }
+          if (index_offset) {
+            try {
+              const dataobject = new DataObjects(fh, index_offset);
+              await dataobject.ready;
+              const comp_index_data = await dataobject.get_data();
+              const inflated = ungzip_1(comp_index_data);
+              const json = new TextDecoder().decode(inflated);
+              this.index = JSON.parse(json);
+            } catch (e) {
+              console.error(`Error loading index by offset ${e}`);
+            }
+          }
+        }
+        if (this.index && this.name in this.index) {
+          this._links = this.index[this.name];
+        } else {
+          this._links = await dataobjects.get_links();
+        }
+      }
+      _get_object_by_address(obj_addr) {
+        if (this._dataobjects.offset == obj_addr) {
+          return this;
+        }
+        return this.visititems((y) => {
+          y._dataobjects.offset == obj_addr ? y : null;
+        });
+      }
+    };
+    var Dataset = class extends Array {
+      constructor(name, dataobjects, parent) {
+        super();
+        this.parent = parent;
+        this.file = parent.file;
+        this.name = name;
+        this._dataobjects = dataobjects;
+        this._attrs = null;
+        this._astype = null;
+      }
+      get value() {
+        var data = this._dataobjects.get_data();
+        if (this._astype == null) {
+          return this.getValue(data);
+        }
+        return data.astype(this._astype);
+      }
+      get shape() {
+        return this._dataobjects.shape;
+      }
+      get attrs() {
+        return this._dataobjects.get_attributes();
+      }
+      get dtype() {
+        return this._dataobjects.dtype;
+      }
+      get fillvalue() {
+        return this._dataobjects.get_fillvalue();
+      }
+      async to_array() {
+        const value = await this.value;
+        const shape = await this.shape;
+        return create_nested_array(value, shape);
+      }
+      async getValue(data) {
+        const dtype = await this.dtype;
+        if (dtype.startsWith("S")) {
+          return (await data).map((s) => s.substr(0, s.indexOf("\0")));
+        } else {
+          return data;
+        }
+      }
+    };
+    function posix_dirname(p) {
+      let sep = "/";
+      let i = p.lastIndexOf(sep) + 1;
+      let head = p.slice(0, i);
+      let all_sep = new RegExp("^" + sep + "+$");
+      let end_sep = new RegExp(sep + "$");
+      if (head && !all_sep.test(head)) {
+        head = head.replace(end_sep, "");
+      }
+      return head;
+    }
+    function normpath(path) {
+      return path.replace(/\/(\/)+/g, "/");
+    }
+    function create_nested_array(value, shape) {
+      const total_length = value.length;
+      const dims_product = shape.reduce((previous, current) => previous * current, 1);
+      if (total_length !== dims_product) {
+        console.warn(`shape product: ${dims_product} does not match length of flattened array: ${total_length}`);
+      }
+      let output = value;
+      const subdims = shape.slice(1).reverse();
+      for (let dim of subdims) {
+        const new_output = [];
+        const { length } = output;
+        let cursor = 0;
+        while (cursor < length) {
+          new_output.push(output.slice(cursor, cursor += dim));
+        }
+        output = new_output;
+      }
+      return output;
+    }
+    /*! pako 2.0.4 https://github.com/nodeca/pako @license (MIT AND Zlib) */
+
+    async function openH5File(options) {
+
+        // Some clients (notably igv-webapp) pass a File reference in the url field.  Fix this
+        if(options.url && isBlobLike(options.url)) {
+            options.file = options.url;
+            options.url = undefined;
+        }
+
+        const isRemote = options.url !== undefined;
+        let fileReader = options.reader ? options.reader : getReaderFor(options);
+
+        // Set default options appropriate for spacewalk
+        const fetchSize = options.fetchSize || 2000;
+        const maxSize = options.maxSize || 200000;
+
+        if (isRemote) {
+            fileReader = new BufferedFile({file: fileReader, fetchSize, maxSize});
+        }
+        const asyncBuffer = new AsyncBuffer(fileReader);
+
+        // Optional external index -- this is not common
+        const index = await readExternalIndex(options);
+        const indexOffset = options.indexOffset;
+
+        // Create HDF5 file
+        const filename = getFilenameFor(options);
+        const hdfFile = new File$1(asyncBuffer, filename, {index, indexOffset});
+        await hdfFile.ready;
+        return hdfFile
+    }
+
+    async function readExternalIndex(options) {
+
+        let indexReader;
+        if(options.indexReader) {
+            indexReader = options.indexReader;
+        }
+        else if(options.index) {
+            return options.index
+        } else if (options.indexURL) {
+            indexReader = new RemoteFile({url: options.indexURL});
+        } else if (options.indexPath) {
+            indexReader = new NodeLocalFile({path: options.indexPath});
+        } else if (options.indexFile) {
+            indexReader = new BlobFile({file: options.indexFile});
+        }
+        if (indexReader) {
+            const indexFileContents = await indexReader.read();
+            const indexFileJson = new TextDecoder().decode(indexFileContents);
+            return JSON.parse(indexFileJson)
+        } else {
+            return undefined
+        }
+    }
+
+
+    function getReaderFor(options) {
+        if (options.url) { // An absolute or relative URL
+            return new RemoteFile(options)
+        } else if (options.path) { // A file path
+            return new NodeLocalFile(options)
+        } else if (options.file) { // A Browser file blob
+            return new BlobFile(options.file)
+        } else {
+            throw Error("One of 'url', 'path (node only)', or 'file (browser only)' must be specified")
+        }
+    }
+
+    function getFilenameFor(options) {
+        if (options.url) {
+            return getFilename(options.url)
+        } else if (options.path) {
+            return getFilename(options.path)
+        } else if (options.file) {
+            return options.file.name
+        }
+    }
+
+    /**
+     * Wraps an io.Reader in an interface jsfive-async expects*
+     */
+    class AsyncBuffer {
+        constructor(fileReader) {
+            this.fileReader = fileReader;
+        }
+
+        async slice(start, end) {
+            return this.fileReader.read(start, end - start)
+        }
+    }
+
+    function getFilename(pathOrURL) {
+        const idx = pathOrURL.lastIndexOf("/");
+        return idx > 0 ? pathOrURL.substring(idx + 1) : pathOrURL
+    }
+
+    function isBlobLike(obj) {
+        return typeof obj.slice === 'function' && typeof obj.arrayBuffer === 'function'
+    }
+
+    class HDF5Reader {
+        
+        constructor(h5_file, bin_size=100000){
+
+            this.h5_file = h5_file;
+            this.bin_size = bin_size;
+            this.h5_obj = undefined;
+        }
+        
+        async fetch(){
+
+            if(!this.h5_obj) {
+                this.h5_obj = await openH5File({
+                    url: this.h5_file,
+                    fetchSize: 1000000,
+                    maxSize: 200000000
+                });
+            }
+            return this.h5_obj
+        }
+
+        async get_keys(){
+            /* returns a list of keys of the pytor file*/
+            let h5_obj = await this.fetch();
+
+            return h5_obj.keys
+        }
+
+        async get_rd_signal(bin_size=this.bin_size){
+
+            let h5_obj = await this.fetch();
+            let h5_obj_keys = h5_obj.keys;
+
+            // console.log(h5_obj_keys)
+            let signal_bin = new ParseSignals(h5_obj_keys);
+            let rd_bins = signal_bin.get_rd_bins();
+            let snp_bins = signal_bin.get_snp_bins();
+            this.available_bins = [...new Set(rd_bins, snp_bins)];
+
+            // let bin_size = this.bin_size
+            if(! this.available_bins.includes(bin_size)){
+                bin_size = this.available_bins.at(-1);    
+            }
+
+            const chr_ds = await h5_obj.get("rd_chromosomes");
+            await chr_ds.dtype;
+            let rd_chromosomes = await chr_ds.value;
+            //console.log(`get_rd_signal rd_chromosomes  ${Date.now() - t0}`)
+            //rd_chromosomes = fixString(rd_chromosomes)
+            let rd_flag = "";
+
+            // get rd stat
+            let rd_stat = await this.rd_stat(h5_obj, h5_obj_keys, bin_size);
+            
+            var wigFeatures = [];
+            var wigFeatures_gc = [];
+            var wigFeatures_rd_call_meanshift = [];
+            var wigFeatures_rd_call_combined = [];
+            var wigFeatures_baf1 = [];
+            var wigFeatures_baf2 = [];
+
+            for (let chrom of rd_chromosomes) {
+                // for normal rd signal
+                var signal_rd = `his_rd_p_${chrom}_${bin_size}${rd_flag}`;
+                let chr_wig = await this.get_chr_signal(h5_obj, h5_obj_keys, chrom, bin_size, signal_rd, rd_stat);
+                wigFeatures = wigFeatures.concat(chr_wig);
+                
+                // rd gc corrected
+                var signal_rd_gc = `his_rd_p_${chrom}_${bin_size}_GC`;
+                let chr_wig_gc = await this.get_chr_signal(h5_obj, h5_obj_keys, chrom, bin_size, signal_rd_gc, rd_stat);
+                wigFeatures_gc = wigFeatures_gc.concat(chr_wig_gc);
+
+                // rd call MeanShift
+                
+                let signal_rd_call = `his_rd_p_${chrom}_${bin_size}_partition_GC_merge`;
+                let chr_wig_rd_call_meanshift = await this.get_chr_signal(h5_obj, h5_obj_keys, chrom, bin_size, signal_rd_call, rd_stat);
+                wigFeatures_rd_call_meanshift = wigFeatures_rd_call_meanshift.concat(chr_wig_rd_call_meanshift);
+                
+                let chr_wig_rd_call = await this.rd_call_combined(h5_obj, h5_obj_keys, chrom, bin_size, rd_stat);
+                wigFeatures_rd_call_combined = wigFeatures_rd_call_combined.concat(chr_wig_rd_call);
+
+                // baf likelihood
+                let signal_baf_1 = `snp_likelihood_${chrom}_${bin_size}_mask`;
+                let chr_wig_bafs = await this.get_baf_signals(h5_obj, h5_obj_keys, chrom, bin_size, signal_baf_1);
+
+                // let signal_baf_1 = `snp_i1_${chrom}_${bin_size}_mask`
+                // let chr_wig_bafs = await this.get_baf_signals_v2(h5_obj, h5_obj_keys, chrom, bin_size, signal_baf_1)
+
+                wigFeatures_baf1 = wigFeatures_baf1.concat(chr_wig_bafs[0]);
+                wigFeatures_baf2 = wigFeatures_baf2.concat(chr_wig_bafs[1]);
+                // this.rd_call_combined(h5_obj, h5_obj_keys, chrom, bin_size, rd_stat)
+            }
+            this.callers = [];
+            if (wigFeatures_rd_call_combined.length != 0){
+                this.callers.push('ReadDepth');
+            }
+            if (wigFeatures_rd_call_combined.length != 0){
+                this.callers.push('2D');
+            }
+
+            var obj = {};
+            var signal_obj = {
+                "RD_Raw": wigFeatures,
+                "RD_Raw_gc_coor" : wigFeatures_gc,
+                "ReadDepth": wigFeatures_rd_call_meanshift,
+                "2D": wigFeatures_rd_call_combined,
+                "BAF1": wigFeatures_baf1,
+                "BAF2": wigFeatures_baf2
+            };
+            obj[bin_size] = signal_obj;
+            return obj
+        }
+
+        decode_segments(segments_arr){
+            let max = 2 ** 32 - 1;
+            let segments = [];
+            let l = [];
+            for (let x of segments_arr){
+                if(x == max){
+                    segments.push(l);
+                    l = [];
+                } else {
+                    l.push(x);
+                }
+            }
+            return segments
+        }
+
+       async  rd_call_combined(h5_obj, h5_obj_keys, chrom, bin_size, rd_stat){
+            let chr_wig = [];
+            
+            let segments;
+            let mosaic_call_segments = `his_rd_p_${chrom}_${bin_size}_partition_GC_mosaic_segments_2d`;
+            if (h5_obj_keys.includes(mosaic_call_segments)){
+                const chrom_dataset = await h5_obj.get(mosaic_call_segments);
+                let chrom_data = await chrom_dataset.value;
+                //console.log(`rd_call_combined ${mosaic_call_segments}  ${Date.now() - t0}`)
+                segments = this.decode_segments(chrom_data);
+                
+            }
+
+            let mosaic_calls = `his_rd_p_${chrom}_${bin_size}_partition_GC_mosaic_call_2d`;
+            if (h5_obj_keys.includes(mosaic_calls)){
+                const segments_call_dataset = await h5_obj.get(mosaic_calls);
+                let segments_call = await segments_call_dataset.to_array(); //create_nested_array(value, shape)
+                segments.forEach((ind_segment, segment_idx) => {
+                    ind_segment.forEach((bin_value, bin_idx) =>{
+                        chr_wig.push({chr:chrom, start: bin_value*bin_size, end: (bin_value+1) * bin_size, value: (segments_call[0][segment_idx]/rd_stat[4]) *2});
+                    });
+                });
+            }
+
+            return chr_wig
+            
+        }
+
+       async rd_stat(h5_obj, h5_obj_keys, bin_size){
+            /* 
+            returns a list for rd statistics information 
+            paramter
+            ---------
+            h5_obj: cnvpytor read object
+            h5_obj_keys: a list of available signal names
+            bin_size: bin size
+            
+            */
+            
+            let rd_stat_signal =  `rd_stat_${bin_size}_auto`;
+            let rd_stat;
+            if (h5_obj_keys.includes(rd_stat_signal)){
+                const rd_stat_dataset = await h5_obj.get(rd_stat_signal);
+                rd_stat = await rd_stat_dataset.value;
+                //console.log(`rd_stat_signal ${rd_stat_signal}  ${Date.now() - t0}`)
+            }
+            return rd_stat
+        }
+
+        
+        async get_chr_signal(h5_obj, h5_obj_keys, chrom, bin_size, signal_name, rd_stat){
+            /* return a list of dictionary for a chromosome */
+            let chr_wig = [];
+            
+            if (h5_obj_keys.includes(signal_name)){
+                const chrom_dataset = await h5_obj.get(signal_name);
+                let chrom_data = await chrom_dataset.value;
+                //console.log(`chr_signal ${signal_name}  ${Date.now() - t0}`)
+                chrom_data.forEach((bin_value, bin_idx) => {
+                    chr_wig.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: (bin_value/rd_stat[4]) *2});
+                });
+            }
+            return chr_wig
+        }
+
+        async get_baf_signals(h5_obj, h5_obj_keys, chrom, bin_size, signal_name){
+            /* return two list of dictionary*/
+            let chr_wig_1 = [];
+            let chr_wig_2 = [];
+            if (h5_obj_keys.includes(signal_name)){
+                let chrom_dataset = await h5_obj.get(signal_name);
+                let chrom_data = await chrom_dataset.to_array(); //create_nested_array(value, shape)
+                chrom_data.forEach((bin_value, bin_idx) => {
+                    let max_value =  Math.max(...bin_value);
+                    const res = bin_value.indexOf(max_value);
+                    let lh = Math.max(res / 200, 1 - res / 200);
+                    chr_wig_1.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: -2 * lh});
+                    if(lh != 0.5){
+                        chr_wig_2.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: -2 *(1-lh)});
+                    }
+                });
+            }
+            return [chr_wig_1, chr_wig_2]
+        }
+
+        async get_baf_signals_v2(h5_obj, h5_obj_keys, chrom, bin_size, signal_name){
+            
+            /* return two list of dictionary*/
+            let chr_wig_1 = [];
+            let chr_wig_2 = [];
+            if (h5_obj_keys.includes(signal_name)){
+                let chrom_dataset = await h5_obj.get(signal_name);
+                let chrom_data = await chrom_dataset.to_array(); //create_nested_array(value, shape)
+                chrom_data.forEach((lh, bin_idx) => {
+                    if (!isNaN(lh)){
+                        chr_wig_1.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: -2 * ( 0.5 - lh )});
+                        if(lh != 0.5){
+                            chr_wig_2.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: -2 * ( 0.5 + lh )});
+                        }
+                    }
+                });
+            }
+            console.log(chrom, chr_wig_1, chr_wig_2);
+            return [chr_wig_1, chr_wig_2]
+
+        }
+    }
+
+    class ParseSignals{
+
+        constructor(signals){
+            /*
+            Parse a signal names
+
+            parameter
+            ---------
+            signals: List of keys in pytor files
+            */
+            this.signals = signals;
+        }
+
+        get_rd_bins(){
+            /* return list of rd bins */
+            let rd_keys = [];
+            this.signals.forEach( val => {
+                let match = val.match(/^his_rd_p_(.*)_(\d+)$/);
+                if(match){
+                    rd_keys.push({chr:match[1], bin_size:match[2]});
+                }});
+            const rd_bins = [...new Set(rd_keys.map(item => Number(item.bin_size)))];
+            return rd_bins
+        }
+
+        get_snp_bins(){
+            /* return list of snp bins */
+            let slected_signals = [];
+            this.signals.forEach( val => {
+                let match = val.match(/^snp_likelihood_(.*)_(\d+)_mask$/);
+                if(match){
+                    slected_signals.push({chr:match[1], bin_size:match[2]});
+                }});
+            const bins = [...new Set(slected_signals.map(item => Number(item.bin_size)))];
+            return bins
+        }
+    }
+
+    class GetFit {
+      constructor(allBins) {
+          this.allBins = allBins;
+      }
+      getValues() {
+          const bins = Object.values(this.allBins).reduce(
+              (binResult, bin) => { return binResult.concat(bin.filter(a => a.binScore > 0).map(a => a.binScore)) }, []);
+          return bins
+      }
+      getMean(data) {
+          return (data.reduce(function (a, b) { return a + b; }) / data.length);
+      }
+      fit_data() {
+          let rd_list = this.getValues();
+          let distParmas = getDistParams(rd_list);
+          return distParmas
+      }
+
+      histogram(data, bins) {
+          const step = bins[1] - bins[0];
+          const hist_bins = [];
+
+          data.forEach((value, index) => {
+              bins.forEach((bin_value, bin_index) => {
+                  if (!hist_bins[bin_value]) {
+                      hist_bins[bin_value] = { count: 0 };
+                  }
+                  if (bin_value <= value && value < bin_value + step) {
+                      hist_bins[bin_value].count++;
+                      return false;
+                  }
+              });
+          });
+          const dist_p = [];
+          hist_bins.forEach((bin, index) => { dist_p.push(bin.count); });
+          return dist_p
+      }
+
+    }
+
+    function range_function(start, stop, step) {
+      const data_array = Array(Math.ceil((stop - start) / step))
+        .fill(start)
+        .map((x, y) => x + y * step);
+      return data_array;
+    }
+
+    function filterOutliers(someArray) {
+
+      if (someArray.length < 4)
+        return someArray;
+
+      let values, q1, q3, iqr, maxValue, minValue;
+
+      values = someArray.slice().sort((a, b) => a - b); //copy array fast and sort
+
+      if ((values.length / 4) % 1 === 0) { //find quartiles
+        q1 = 1 / 2 * (values[(values.length / 4)] + values[(values.length / 4) + 1]);
+        q3 = 1 / 2 * (values[(values.length * (3 / 4))] + values[(values.length * (3 / 4)) + 1]);
+      } else {
+        q1 = values[Math.floor(values.length / 4 + 1)];
+        q3 = values[Math.ceil(values.length * (3 / 4) + 1)];
+      }
+
+      iqr = q3 - q1;
+      maxValue = q3 + iqr * 1.5;
+      minValue = q1 - iqr * 1.5;
+
+      return values.filter((x) => (x >= minValue) && (x <= maxValue));
+    }
+
+    function getDistParams(bins) {
+      let filteredBins = filterOutliers(bins);
+      const n = filteredBins.length;
+      const mean = filteredBins.reduce((a, b) => a + b) / n;
+      const std = Math.sqrt(filteredBins.map(x => Math.pow(x - mean, 2)).reduce((a, b) => a + b) / n);
+      return [mean, std]
+    }
+
+    function linspace(a, b, n) {
+      if (typeof n === "undefined") n = Math.max(Math.round(b - a) + 1, 1);
+      if (n < 2) {
+          return n === 1 ? [a] : [];
+      }
+      var ret = Array(n);
+      n--;
+      for (let i = n; i >= 0; i--) {
+          ret[i] = (i * b + (n - i) * a) / n;
+      }
+      return ret;
+    }
+
+    var g_utils = { range_function, getDistParams, linspace, GetFit};
+
+    /** 
+    * Evaluates the cumulative distribution function (CDF) for a Student's t distribution with degrees of freedom `v` at a value `t`.
+    *
+    * @params {number} t - value for the t test
+    * @params {PositiveNumber} v - degree of freedom
+    * @returns {Probability} evaluated CDF
+    */
+    function TdistributionCDF(t, v){
+        if (isNaN( t ) || isNaN( v ) || v <= 0.0) {
+    		return NaN;
+    	}
+    	if ( t === 0.0 ) {
+    		return 0.5;
+    	}
+        return 1/2 + (1/2 * (incompbeta(1/2*v, 1/2, 1) - incompbeta(1/2*v, 1/2, v/(v+t*t)))) * Math.sign( t)
+
+    }
+
+
+    /** 
+    * incompbeta(a,b,x) evaluates incomplete beta function, here a, b > 0 and 0 <= x <= 1. This function requires contfractbeta(a,b,x, ITMAX = 200) 
+    *  code translated from  https://malishoaib.wordpress.com/2014/04/15/the-beautiful-beta-functions-in-raw-python/
+    *
+    * @params
+    * @params
+    * @params
+    * @returns 
+    */
+    function incompbeta(a, b, x){
+         
+        if(x == 0){
+            return 0;
+        }
+        else if (x == 1){
+            return 1;
+        }else
+        {
+            let lbeta = lgamma(a+b) - lgamma(a) - lgamma(b) + a * Math.log(x) + b * Math.log(1-x);
+            if (x < (a+1) / (a+b+2)){
+                return Math.exp(lbeta) * contfractbeta(a, b, x) / a;
+            }
+            else {
+                return 1 - Math.exp(lbeta) * contfractbeta(b, a, 1-x) / b;
+            }
+        }
+    }
+
+    /**
+     * contfractbeta() evaluates the continued fraction form of the incomplete Beta function; incompbeta().  
+     *   (Code translated from: Numerical Recipes in C.)
+     * 
+     * @param {*} a 
+     * @param {*} b 
+     * @param {*} x 
+     * @param {*} ITMAX 
+     * @returns 
+     */
+    function contfractbeta(a,b,x, ITMAX = 1000){
+         
+        let EPS = 3.0e-7;
+        let az = 1.0;
+        let am = 1.0;
+        let bm = 1.0;
+        let qab = a + b;
+        let qap = a + 1.0;
+        let qam = a-1.0;
+        let bz = 1.0 - qab*x/qap;
+         
+        //for i in range(ITMAX):
+        for(let i =0; i<= ITMAX; i++){
+            let em = parseFloat(i+1);
+            let tem = em + em;
+            let d = em*(b-em)*x/((qam+tem)*(a+tem));
+            let ap = az + d*am;
+            let bp = bz+d*bm;
+            d = -(a+em)*(qab+em)*x/((qap+tem)*(a+tem));
+            let app = ap+d*az;
+            let bpp = bp+d*bz;
+            let aold = az;
+            am = ap/bpp;
+            bm = bp/bpp;
+            az = app/bpp;
+            bz = 1.0;
+            if (Math.abs(az-aold)<(EPS * Math.abs(az))){
+                return az
+            }
+        }
+    }
+
+    /**
+     * Evaluates factorial of a number
+     * 
+     * @param {Number} xf - Integer number 
+     * @returns factorial of the number
+     */
+    function factorial(xf) {
+        if ((xf == 0) || (xf == 1)) return 1;
+        else {
+            let result = (xf * factorial(xf - 1));
+            return result
+        }
+    }
+
+    /**
+     * Evalues factorial for an integer or fraction using either either factorial or gamma function
+     * 
+     * @param {Number} a - integar or fraction number
+     * @returns value of a gamma function
+     */
+    function gamma(a){
+        let gamma;
+        
+        var qc = [75122.6331530, 80916.6278952, 36308.2951477, 8687.24529705, 1168.92649479, 83.8676043424, 2.50662827511];
+        
+        var sum1 = 0;
+        var prod1 = 1;
+        if (a == 0) { 
+            gamma = 1e99; 
+        }else {
+            if ((a % 1) == 0) {//if integer
+                gamma = factorial(a - 1);
+            }
+            else { //not integer
+                for (let j = 0; j < qc.length; j++) {
+                    sum1 = sum1 + qc[j] * Math.pow(a, j);
+                    prod1 = prod1 * (a + j);
+                }
+                gamma = (sum1 * Math.pow((a + 5.5), (a + 0.5))) * Math.exp(-(a + 5.5)) / prod1;
+            }
+        }
+        
+        return gamma
+    }
+
+    /**
+     * 
+     * @param {Number} xg  - integar or fraction number
+     * @returns natural log of gamma function
+     */
+
+    function lgamma(xg){
+        return Math.log(gamma(xg))
+    }
+
+    function t_test_1_sample$1(mean, m, s, n) {
+        if (s == 0) s = 1;
+        var t = ((mean - m) / s) * Math.sqrt(n);
+        var p = 1.0 - TdistributionCDF(Math.abs(t), (n - 1));
+        return p
+    }
+
+    function t_test_2_samples$1(m1, s1, n1, m2, s2, n2) {
+        if (s1 == 0) s1 = 1;
+        if (s2 == 0) s2 = 1;
+        var t = (m1 - m2) / Math.sqrt(s1 ** 2 / n1 + s2 ** 2 / n2);
+        var df = ((s1 ** 2 / n1 + s2 ** 2 / n2) ** 2 * (n1 - 1) * (n2 - 1)) /
+            ((s1 ** 4 * (n2 - 1)) / n1 ** 2 + (s2 ** 4 * (n1 - 1)) / n2 ** 2);
+
+        var p = 1.0 - TdistributionCDF(Math.abs(t), parseInt(df + 0.5));
+
+        return p
+    }
+
+    var t_dist = {TdistributionCDF, gamma, t_test_1_sample: t_test_1_sample$1, t_test_2_samples: t_test_2_samples$1};
+
+    class CombinedCaller{
+        constructor(wigFeatures, binSize) {
+            this.wigFeatures = wigFeatures;
+            this.binSize = binSize;
+            // let fit_obj = this.get_fit()
+            // this.globalMean = fit_obj.globalMean
+            // this.globalStd = fit_obj.globalStd
+        }
+        get_fit(){
+            var fit_info = new g_utils.GetFit(this.wigFeatures);
+            var [globalMean, globalStd] = fit_info.fit_data();
+
+            return {globalMean:globalMean, globalStd:globalStd}
+           
+        }
+        async call_2d(omin=null, mcount=null, event_type="both", max_distance=0.1, baf_threshold=0, max_copy_number=10, min_cell_fraction=0.0){
+            
+            let fit_obj = this.get_fit();
+            this.globalMean = fit_obj.globalMean;
+            this.globalStd = fit_obj.globalStd;
+            
+            let overlap_min = omin==null ?  0.05 * this.binSize / 3e9: omin ;
+            let min_count = mcount == null ? parseInt(this.binSize / 10000) : mcount ;
+
+            let gstat_rd0 = [];
+            let gstat_rd_all = [];
+            let gstat_rd = [];
+            let gstat_error = [];
+            let gstat_lh = [];
+            let gstat_n = [];
+            
+            for (const [chr, wig] of Object.entries(this.wigFeatures)) {
+                let segments = [];
+                let levels = [];
+                let likelihoods = [];
+                
+                wig.forEach((bin, bin_idx) => {
+                    if (bin.hets_count > 4 ){
+                        
+                        if( bin.dp_count > min_count ){
+                            segments.push([bin_idx]);
+                            levels.push(bin.binScore);
+                            likelihoods.push(bin.likelihood_score);
+                            delete bin.likelihood_score;
+                            
+                        }
+                    }
+                });
+
+                let diff_level = [];
+                for(let i=1; i<levels.length; i++){
+                    diff_level.push(Math.abs(levels[i] - levels[i-1]));
+                }
+                let min_flank = [0];
+                for(let i=1; i<diff_level.length; i++){
+                    min_flank.push(Math.min(diff_level[i-1], diff_level[i]));    
+                }
+                min_flank.push(0);
+
+                let error  = levels.map((x, x_idx) => {return Math.sqrt(Math.sqrt(x) ** 2 + this.globalStd ** 2 + Math.pow(min_flank[x_idx]/2, 2));});
+                
+                let overlaps = [];
+                
+                for(let i=0; i< segments.length-1; i++){
+                    
+                    let lh_overlap = 0;
+                    try{
+                        lh_overlap = likelihood_overlap(likelihoods[i], likelihoods[i+1]);
+                    }catch{
+                        console.log("Overlap failed: ", i, likelihoods[i], segments[i+1], likelihoods[i+1]);
+                    }
+                    
+                    let rd_overlap = normal_overlap_approx(levels[i], error[i], levels[i+1], error[i+1]);
+                    overlaps.push(rd_overlap * lh_overlap);
+                    
+                }
+                
+                while(overlaps.length >0) {
+                    overlaps = overlaps.filter(num => typeof num === "number");
+                    
+                    let max_overlap = arrayMax(overlaps);
+                    if(isNaN(max_overlap)){
+                        console.log('NaN value', overlaps);
+                    }
+                    if(max_overlap < overlap_min){
+                        // console.log("maxoverlap ",max_overlap,  "is smaller than overlap min")
+                        break
+                    }
+                    let i = overlaps.indexOf(max_overlap);
+                    
+                    let merge_level = normal_merge(levels[i], error[i], levels[i + 1], error[i + 1]);
+                    
+                    let nlh;
+                    let nlh_sum;
+                    try{
+                        nlh = likelihoods[i].map((l_value, l_idx) => { return l_value * likelihoods[i+1][l_idx]});
+                    
+                        nlh_sum = nlh.reduce((a, c_value) => {return a + c_value});
+                        
+                    }catch{
+                        console.log(likelihoods);
+                        console.log('max_overlap:', max_overlap, i, overlaps.length);
+                        console.log('likelihood: ', i ,likelihoods[i], likelihoods[i+1]);
+                        console.log('nlh: ', nlh_sum);
+                    }
+                    // nlh_sum = nlh.reduce((a, c_value) => {return a + c_value});
+
+                    levels[i] = merge_level.nl;
+                    error[i] = merge_level.ne;
+                    
+                    likelihoods[i] = nlh.map(function(item) { return item/nlh_sum } );
+                    
+                    segments[i].push(...segments[i+1]);
+
+                    levels.splice(i + 1, 1);
+                    error.splice(i + 1, 1);
+                    segments.splice(i + 1, 1);
+                    likelihoods.splice(i + 1, 1);
+                    overlaps.splice(i, 1);
+                    
+                    if(i < overlaps.length){
+                        
+                        let rd_overlap = normal_overlap_approx(levels[i], error[i], levels[i+1], error[i+1]);
+                        let new_overlap = rd_overlap * likelihood_overlap(likelihoods[i], likelihoods[i + 1]);
+                        
+                        overlaps[i] = new_overlap;
+                    }
+                    if(i > 0){
+                        let new_overlap = normal_overlap_approx(levels[i - 1], error[i - 1], levels[i], error[i]) 
+                        * likelihood_overlap(likelihoods[i - 1], likelihoods[i]);
+                        overlaps[i - 1] = new_overlap;
+                    }
+
+                }
+                let ons = -1;
+                while(true){
+                    overlaps = [];
+                    for(let i=0; i< levels.length; i++){
+                        for(let j=i; j<levels.length; j++){
+                            if(segments[j][0] - segments[i].at(-1) < max_distance * (segments[i].length + segments[j].length)){
+                                overlaps.push(normal_overlap_approx(levels[i], error[i], levels[j], error[j]) * likelihood_overlap(likelihoods[i], likelihoods[j]));
+                            }
+                        }
+                    }
+                    
+                    if(overlaps.length == 0){
+                        break
+                    }
+                    let max_overlap = arrayMax(overlaps);
+                    if(max_overlap < overlap_min){
+                        break
+                    }
+                    let i = 0; 
+                    let j = 1;
+                    while (i < segments.length - 1){
+                        let overlap_value = normal_overlap_approx(levels[i], error[i], levels[j], error[j]) * likelihood_overlap(likelihoods[i], likelihoods[j]);
+
+                        if((segments[j][0] - segments[i].at(-1)) < max_distance * (segments[i].length + segments[j].length) && overlap_value == max_overlap){
+                            let merge_level = normal_merge(levels[i], error[i], levels[i + 1], error[i + 1]);
+
+                            levels[i] = merge_level.nl;
+                            error[i] = merge_level.ne;
+                            let nlh = likelihoods[i].map((l_value, l_idx) => { return l_value * likelihoods[i+1][l_idx]});
+                            let nlh_sum = nlh.reduce((a, c_value) => {return a + c_value});
+                            likelihoods[i] = nlh.map(function(item) { return item/nlh_sum } );
+
+                            
+                            segments[i].push(...segments[i+1]);
+                            segments[i] = segments[i].sort((a,b) => a-b);
+
+                            levels.splice(j, 1);
+                            error.splice(j, 1);
+                            segments.splice(j, 1);
+                            likelihoods.splice(j, 1);
+                            
+                            if(j >= segments.length){
+                                i += 1;
+                                j = i + 1;
+                            }
+
+                        }else {
+                            j += 1;
+                            if(j >= segments.length){
+                                i += 1;
+                                j = i + 1;
+                            }
+                        }
+                    }
+                    if(ons == segments.length){
+                        break
+                    }
+                    ons = segments.length;
+                }
+                // console.log('final segments', segments)
+                
+                segments.forEach((seg_value, seg_idx) => {
+                    let baf_info = likelihood_baf_pval(likelihoods[seg_idx]);
+                    if(seg_value.length > 1){
+
+                        seg_value.forEach((bin, bin_idx) =>{
+                            gstat_rd_all.push(wig[bin]);
+                            if(baf_info.mean <= baf_threshold){
+                                gstat_rd0.push(wig[bin]);
+                            }
+                            wig[bin].segment_score = levels[seg_idx];
+                        });
+                        gstat_rd.push(levels[seg_idx]);
+                        gstat_error.push(error[seg_idx]);
+                        gstat_lh.push(likelihoods[seg_idx]);
+
+                    }
+
+                });
+
+                continue
+            }
+            
+            // Third stage for call
+            
+            // let data = gstat_rd0.lengthn == 0 ?  gstat_rd_all: gstat_rd0 ;
+            
+            let points = parseInt(1000 * (1 - min_cell_fraction));
+            if(points == 0){
+                points = 1;
+            }
+            let x = g_utils.linspace(min_cell_fraction, 1, points);
+            let master_lh = {};
+            let germline_lh = {};
+            for(let cn=10; cn > -1; cn--){
+                for(let h1=0; h1 < (cn/2+1); h1++){
+                    let h2 = cn - h1;
+                    let mrd = x.map((v, idx) => {return 1-v +v*cn/2});
+                    let g_mrd = cn / 2;
+                    let g_mbaf;
+                    let mbaf;
+                    if(cn > 0){
+                        g_mbaf = 0.5 - (h1 / (h1 + h2));
+                        mbaf = x.map((v, idx) => {return 0.5 - (1 - v + v * h1) / (2 - 2 * v + (h1 + h2) * v)});
+                       
+                    }else {
+                        g_mbaf = 0;
+                        mbaf =  x.map((v, idx) => {return 0*v});
+                    }
+                    
+                    for( let ei=0; ei < gstat_rd.length; ei++){
+                            
+                        let g_lh = normal(g_mrd * this.globalMean, 1, gstat_rd[ei], gstat_error[ei]) * likelihood_of_baf(gstat_lh[ei], 0.5 + g_mbaf);
+                        if(ei in germline_lh){
+                            germline_lh[ei].push([cn, h1, h2, g_lh, 1.0]);
+                        }else {
+                            germline_lh[ei] = [cn, h1, h2, g_lh, 1.0];
+                        }
+                        let slh = 0;
+                        let max_lh = 0;
+                        let max_x = 0;
+                        mrd.forEach((mi, idx) => {
+                            if(!isNaN(mbaf[idx])){
+                                let tmpl = normal(mi * this.globalMean, 1, gstat_rd[ei], gstat_error[ei]) * likelihood_of_baf(gstat_lh[ei], 0.5 + mbaf[idx]);
+                                slh += tmpl;
+                                if(tmpl > max_lh){
+                                    max_lh = tmpl;
+                                    max_x = x[idx];
+                                }
+                            }
+                        });
+                        if(ei in master_lh){
+                            master_lh[ei].push([cn, h1, h2, slh / x.length, max_x]);
+                        }else {
+                            master_lh[ei] = [cn, h1, h2, slh / x.length, max_x];
+                        }
+                    }
+                    
+                    for( let ei=0; ei < gstat_rd.length; ei++){
+                        if(event_type == "germline"){
+                            master_lh[ei].sort((a, b) => a[3] - b[3]);
+                        }
+                        else {
+                            master_lh[ei].sort((a, b) => a[3] - b[3]);
+                            if(event_type == "both"){
+                                
+                                germline_lh[ei].sort((a, b) => a[3] - b[3]);
+                                if(germline_lh[ei][0][3] > master_lh[ei][0][3]){
+                                    //let tmp_list = list(filter( lambda x: x[0] != germline_lh[ei][0][0] and x[1] != germline_lh[ei][0][1], master_lh[ei]))
+                                    let tmp_list = master_lh[ei].filter((x) => (x[0] != germline_lh[ei][0][0]) && (x[1] <= germline_lh[ei][0][1]));
+                                    // console.log('tmp_list', tmp_list)
+                                    // master_lh[ei] = [germline_lh[ei][0]] + tmp_list
+                                    master_lh[ei] = [germline_lh[ei][0]].push(...tmp_list);
+                                }
+                            }
+                        }
+                    }
+                    for( let ei=0; ei < gstat_rd.length; ei++){
+                        if(master_lh[ei][0][0] > 2);
+                        if(master_lh[ei][0][0] < 2);
+                        gstat_rd[ei] / this.globalMean;
+                        t_dist.t_test_1_sample(this.globalMean, gstat_rd[ei], gstat_error[ei], gstat_n[ei]);
+                        // console.log(etype)
+
+                    }
+                    
+
+                    // break
+                }
+                
+            }
+            
+            var rawbinScore = this.formatDataStructure(this.wigFeatures, 'binScore', this.globalMean);
+            var callScore = this.formatDataStructure(this.wigFeatures, 'segment_score', this.globalMean);
+            
+            return {binScore: rawbinScore, segment_score: callScore}
+            
+        }
+
+        formatDataStructure(wigFeatures, feature_column, scaling_factor = 1) {
+            const results = [];
+            for (const [chr, wig] of Object.entries(wigFeatures)) {
+
+                wig.forEach(sample => {
+                    var new_sample = { ...sample };
+                    if (scaling_factor != 1) {
+                        new_sample.value = sample[feature_column] / scaling_factor * 2;
+                    }
+                    results.push(new_sample);
+                });
+            }
+
+            return results
+        }
+
+        formatDataStructure_BAF(feature_column, scaling_factor = 2) {
+            const baf1 = [];
+            const baf2 = [];
+            for (const [chr, wig] of Object.entries(this.wigFeatures)) {
+
+                wig.forEach(sample => {
+                    
+                    var baf1_value = { ...sample };
+                    var baf2_value = { ...sample };
+                    
+                    let value = sample[feature_column];
+                    if (value != 0.5){
+                        baf2_value.value = -2 * (1 - value);
+                        baf2.push(baf2_value);
+                    }
+                    baf1_value.value = -2 * value;
+                    baf1.push(baf1_value);
+                        
+                });
+            }
+            
+
+            return [baf1, baf2]
+        }
+    }
+
+    function arrayMax(arr) {
+        return arr.reduce(function (p, v) {
+          return ( p > v ? p : v );
+        });
+      }
+
+    /**
+     * Normal distribution.
+     * 
+     * @param {float} x - Variable.
+     * @param {float} a - area
+     * @param {float} x0 -  Mean value
+     * @param {float} sigma - Sigma
+     * @returns {float} - Value of distribution in x.
+     */
+    function normal(x, a, x0, sigma){
+      
+      return a * Math.exp(-1* (x - x0) ** 2 / (2 * sigma ** 2)) / Math.sqrt(2 * Math.PI) / sigma
+
+    }
+
+    /**
+     *  Calculates two normal distributions overlap area.
+     * 
+     * @param {float} m1 - Mean value of the first distribution
+     * @param {float} s1 - Sigma of the first distribution
+     * @param {float} m2 - Mean value for second distribution
+     * @param {float} s2 - Sigma of the second distribution
+     * 
+     * @returns {float} area - Area of overlap
+     */
+    function normal_overlap_approx(m1, s1, m2, s2){
+       
+        return Math.exp(-1* (m1-m2)**2/ (s1**2+s2**2))
+    }
+
+
+    /**
+     * Returns overlap area of two likelihood functions.
+     * 
+     * @param {*} lk1 - First likelihood function.
+     * @param {*} lk2 - Second likelihood function.
+     * 
+     * @returns {float}  - Overlap area.
+     */
+    function likelihood_overlap(likelihood_1, likelihood_2){
+        let sum;
+        try{
+            sum = likelihood_1.reduce((accumulator, currentValue, currentIndex) => {return accumulator + Math.min(currentValue, likelihood_2[currentIndex])});
+        }catch{
+            console.log("Failed to find likelihood overlap: ", likelihood_1, likelihood_2);
+            return 0
+        }
+
+        return sum
+    }
+
+    /**
+     * Calculates normal distribution that is product of two given normal distributions.
+     * 
+     * @param {float} m1 - Mean value of the first distribution
+     * @param {float} s1 - Sigma of the first distribution
+     * @param {float} m2 - Mean value for second distribution
+     * @param {float} s2 - Sigma of the second distribution
+     * @returns {Object} An object representing the first distribution
+     * @property {float} nl - Mean value of the first distribution
+     * @property {float} ne - Sigma of the first distribution
+     */
+    function normal_merge(m1, s1, m2, s2){
+       
+        if((s1 == 0) && (s2 == 0)){
+            return {nl: 0.5 * (m1 + m2), ne: 0}
+        }
+        else {
+            return {nl: (m1 * s2 * s2 + m2 * s1 * s1) / (s1 * s1 + s2 * s2), ne: Math.sqrt(s1 * s1 * s2 * s2 / (s1 * s1 + s2 * s2))}
+        }
+    }
+
+    /**
+     * Calculates likelihood for given baf
+     * @param {*} likelihood 
+     * @param {*} baf 
+     * @returns {float}  likelihood value
+     */
+    function likelihood_of_baf(likelihood, baf){
+       
+        let bin = parseInt(baf * (likelihood.length - 1));
+        let fr = baf * (likelihood.length - 1) - bin;
+        if(bin < likelihood.length - 1){
+            return likelihood[bin] * (1 - fr) + likelihood[bin + 1] * fr
+        }
+        else {
+            return likelihood[bin]
+        }
+    }
+
+    /**
+     * 
+     * Calculates baf level and p-value for given likelihood function.
+     * 
+     * @param {*} likelihood 
+     * @returns {Object} An object representing BAF
+     * @property {float} mean  BAF level (difference from 1/2)
+     * @property {float} p  p-value for event different than 1/2
+     */
+    function likelihood_baf_pval(likelihood) {
+        const res = likelihood.length;
+        const max_lh = Math.max(...likelihood);
+        let ix = likelihood.indexOf(max_lh);
+        if (ix > Math.floor(res / 2)) {
+          ix = res - 1 - ix;
+        }
+        const b = (res / 2 - ix) / (res + 1);
+      
+        const ix1 = Math.floor((res / 2 + ix) / 2);
+        const ix2 = res - 1 - ix1;
+        let p = likelihood.slice(ix1, ix2 + 1).reduce((acc, val) => acc + val, 0) / likelihood.reduce((acc, val) => acc + val, 0);
+        if (ix === Math.floor(res / 2)) {
+          p = 1.0;
+        }
+        return {mean:b, p:p};
+      }
+
+      var combined_caller = {CombinedCaller};
+
+    function erf(x) {
+        var m = 1.0, s = 1.0, sum = x * 1.0;
+        for (var i = 1; i < 50; i++) {
+            m *= i;
+            s *= -1;
+            sum += (s * Math.pow(x, 2.0 * i + 1.0)) / (m * (2.0 * i + 1.0));
+        }
+        return (2 * sum) / Math.sqrt(3.14159265358979)
+    }
+
+    function getEValue(mean, sigma, rd, start, end) {
+        var arr = new DataStat(rd.slice(start, end));
+        if (arr.std == 0) {
+            if (sigma > 0) { arr.std = (sigma * arr.mean) / mean; }
+            else { arr.std = 1; }
+        }
+        var p_val = t_test_1_sample(mean, arr.mean, arr.std, end - start) / (end - start);
+        return p_val
+    }
+
+    function gaussianEValue(mean, sigma, rd, start, end) {
+        var arr = new DataStat(rd.slice(start, end));
+
+        if (arr.mean < mean) {
+            var x = (arr.max - arr.mean) / (sigma * Math.sqrt(2));
+            return Math.pow(0.5 * (1 + erf(x)), end - start)
+        }
+        var x = (arr.min - arr.mean) / (sigma * Math.sqrt(2));
+        return Math.pow(0.5 * (1 - erf(x)), end - start)
+    }
+
+    function adjustToEvalue(mean, sigma, rd, start, end, pval, max_steps = 1000) {
+        var val = getEValue(mean, sigma, rd, start, end);
+        var step = 0, done = false;
+        while ((val > pval) & !done & (step < max_steps)) {
+            done = true;
+            step += 1;
+            var [v1, v2, v3, v4] = [1e10, 1e10, 1e10, 1e10];
+            if (start > 0) v1 = getEValue(mean, sigma, rd, start - 1, end);
+            if (end - start > 2) {
+                var v2 = getEValue(mean, sigma, rd, start + 1, end);
+                var v3 = getEValue(mean, sigma, rd, start, end - 1);
+            }
+            if (end < rd.length) { var v4 = getEValue(mean, sigma, rd, start, end + 1); }
+            if (Math.min[(v4)] < val) {
+                done = false;
+                if (v1 == Math.min[(v4)]) {
+                    start -= 1;
+                    val = v1;
+                }
+                elif(v2 == Math.min[(v4)]); {
+                    start += 1;
+                    val = v2;
+                }
+                elif(v3 == Math.min[(v4)]); {
+                    end -= 1;
+                    val = v3;
+                }
+                elif(v4 == Math.min[(v4)]); {
+                    end += 1;
+                    val = v4;
+                }
+            }
+        }
+        if (val <= pval) { return end }
+        return 0;
+    }
+
+    class DataStat {
+        constructor(data_array) {
+            this.data = data_array;
+            this.mean = data_array.reduce((acc, n) => acc + n) / data_array.length;
+            this.std = Math.sqrt(data_array.reduce((acc, n) => (n - this.mean) ** 2) / data_array.length);
+        }
+    }
+
+    function t_test_1_sample(mean, m, s, n) {
+        if (s == 0) s = 1;
+        var t = ((mean - m) / s) * Math.sqrt(n);
+        var p = 1.0 - t_dist.TdistributionCDF(Math.abs(t), (n - 1));
+        return p
+    }
+
+    function t_test_2_samples(m1, s1, n1, m2, s2, n2) {
+        if (s1 == 0) s1 = 1;
+        if (s2 == 0) s2 = 1;
+        var t = (m1 - m2) / Math.sqrt(s1 ** 2 / n1 + s2 ** 2 / n2);
+        var df = ((s1 ** 2 / n1 + s2 ** 2 / n2) ** 2 * (n1 - 1) * (n2 - 1)) /
+            ((s1 ** 4 * (n2 - 1)) / n1 ** 2 + (s2 ** 4 * (n1 - 1)) / n2 ** 2);
+
+        var p = 1.0 - t_dist.TdistributionCDF(Math.abs(t), parseInt(df + 0.5));
+
+        return p
+    }
+
+    class Partition {
+
+        constructor(rd, mean, std) {
+            this.rd = rd;
+            this.mean = mean;
+            this.std = std;
+            this.bin_bands = [2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56, 64, 80, 96, 112, 128];
+        }
+
+        get_rd_signal_bandwidth(data_array) {
+            var new_array = [];
+
+            data_array.forEach((value, index) => {
+                var tmp_value = 0;
+                if (value > this.mean / 4) {
+                    tmp_value = this.mean / (this.std ** 2 * value);
+                } else {
+                    tmp_value = 4 / this.std ** 2;
+                }
+                new_array.push(tmp_value);
+            });
+            return new_array
+        }
+
+        meanShiftCaller(repeats = 3) {
+            var ChrLevels = {};
+            
+            Object.entries(this.rd).forEach(([chr, chr_rd]) => {
+                var masked = new Array(chr_rd.length).fill(false);
+
+                // set the level
+                var levels = new Array(chr_rd.length);
+
+                for (let b = 0; b < chr_rd.length; b++) {
+                    if (!masked[b]) { levels[b] = chr_rd[b]; }
+                }
+
+                this.bin_bands.forEach((bin_band, bin_band_index) => {
+                    // not masked levels at current bin
+                    // get boolean values
+                    var not_masked = masked.map((value, index) => { return !value; });
+
+                    // not masked level at current bin
+                    var nm_levels = [];
+
+                    Object.entries(chr_rd).forEach(([k, v]) => { nm_levels.push(v.binScore); });
+                    
+                    // set the mask border
+                    var mask_borders = [0];
+                    var count = 0;
+
+                    for (let i = 0; i < masked.length; i++) {
+                        if (masked[i]) {
+                            if (count > 0) {
+                                mask_borders.push(mask_borders[mask_borders.length - 1] + count - 1);
+                                count = 0;
+                            }
+                        } else { count += 1; }
+                    }
+
+                    mask_borders.shift();
+
+                    // repeating steps
+                    for (let step = 0; step < repeats; step++) {
+                        var isig = this.get_rd_signal_bandwidth(nm_levels);
+                        var grad = new Array(nm_levels.length).fill(0);
+
+                        for (let i = 0; i < nm_levels.length; i++) {
+                            for (let j = i - 3 * bin_band; j <= i + 3 * bin_band + 1; j++) {
+                                if (j < 0 || j >= nm_levels.length) continue;
+                                if (Math.abs(i - j) >= nm_levels.length) continue;
+
+                                var g_value = (j - i) * Math.exp((-0.5 * (j - i) ** 2) / bin_band ** 2) *
+                                    Math.exp(-0.5 * (nm_levels[i] - nm_levels[j]) ** 2 * isig[i]);
+
+                                grad[i] += g_value;
+                            }
+                        }
+                        
+                        // get the border
+                        var border = new Array();
+                        for (var i = 0; i < grad.length - 1; i++) {
+                            if ((grad[i] < 0) & (grad[i + 1] >= 0)) border.push(i);
+                        }
+
+                        border.push(grad.length - 1);
+                        border = border.concat(mask_borders).sort((a, b) => a - b);
+                        border = Array.from(new Set(border));
+
+                        var pb = 0;
+                        for (var i = 0; i < border.length; i++) {
+                            var range_array = nm_levels.slice(pb, border[i] + 1);
+                            var range_mean = range_array.reduce((acc, n) => acc + n) / range_array.length;
+
+                            nm_levels.fill(range_mean, pb, border[i] + 1);
+                            pb = border[i] + 1;
+                        }
+                    }
+
+                    for (var i = 0, j = 0; i < levels.length; i++) {
+                        if (not_masked[i]) {
+                            levels[i] = nm_levels[j];
+                            j++;
+                        }
+                    }
+
+                    //get the border
+                    var border = new Array();
+                    for (var i = 0; i < levels.length - 1; i++) {
+                        //if(i == levels.length -1) continue;
+                        var diff = Math.abs(levels[i + 1] - levels[i]);
+
+                        if (diff > 0.01) border.push(i + 1);
+                    }
+
+                    border.unshift(0);
+                    border.push(levels.length);
+
+                    // reset the mask
+                    masked = new Array(this.rd.length).fill(false);
+
+                    // check the borders
+                    for (var i = 1; i < border.length; i++) {
+                        var seg = [border[i - 1], border[i]];
+                        var seg_left = [border[i - 1], border[i - 1]];
+                        if (i > 1) { seg_left[0] = border[i - 2]; } else continue;
+
+                        var seg_right = [border[i], border[i]];
+                        if (i < border.length - 1) { seg_right[1] = border[i + 1]; } else continue;
+
+                        var n = seg[1] - seg[0];
+                        var n_left = seg_left[1] - seg_left[0];
+                        var n_right = seg_right[1] - seg_right[0];
+                        if (n <= 1) continue;
+                        var seg_array = new DataStat(levels.slice(seg[0], seg[1]));
+
+                        if (n_right <= 15 || n_left <= 15 || n <= 15) {
+                            var ns = 1.8 * Math.sqrt(levels[seg_left[0]] / this.mean) * this.std;
+                            if (Math.abs(levels[seg_left[0]] - levels[seg[0]]) < ns) { continue }
+
+                            ns = 1.8 * Math.sqrt(levels[seg_right[0]] / this.mean) * this.std;
+                            if (Math.abs(levels[seg_right[0]] - levels[seg[0]]) < ns) { continue }
+                        } else {
+                            var seg_left_array = levels.slice(seg_left[0], seg_left[1]);
+                            var seg_left_1 = new DataStat(seg_left_array);
+
+                            var seg_right_array = levels.slice(seg_right[0], seg_right[1]);
+                            var seg_right_1 = new DataStat(seg_right_array);
+
+                            var ttest_2sample_1 = t_test_2_samples(seg_array.mean, seg_array.std, seg_array.data.length,
+                                seg_left_1.mean, seg_left_1.std, seg_left_1.data.length);
+                            if (ttest_2sample_1 > (0.01 / genome_size) * bin_size * (n + n_left)) { continue }
+
+                            var ttest_2sample_2 = t_test_2_samples(seg_array.mean, seg_array.std, seg_array.data.length,
+                                seg_right_1.mean, seg_right_1.std, seg_right_1.data.length);
+                            if (ttest_2sample_2 > (0.01 / genome_size) * bin_size * (n + n_right)) { continue }
+                        }
+
+                        var ttest_1sample_1 = t_test_1_sample(this.mean, seg_array.mean, seg_array.std, seg_array.data.length);
+                        if (ttest_1sample_1 > 0.05) { continue }
+                        let segments_rd = nm_levels.slice(seg[0], seg[1]);
+                        var raw_seg_data = new DataStat(segments_rd);
+
+                        masked.fill(true, seg[0], seg[1]);
+                        levels.fill(raw_seg_data.mean, seg[0], seg[1]);
+                    }
+                });
+
+                ChrLevels[chr] = levels;
+
+            });
+            return ChrLevels
+        }
+        call_mean_shift(repeats = 3) {
+            const bin_size = 1000;
+            // const genome_size = bin_size * this.rd.length;
+            const genome_size = 2871000000;
+            var masked = new Array(this.rd.length).fill(false);
+
+            // set the level
+            var levels = new Array(this.rd.length);
+            for (var b = 0; b < this.rd.length; b++) {
+                if (!masked[b]) {
+                    levels[b] = this.rd[b];
+                }
+            }
+            this.bin_bands.forEach((bin_band, bin_band_index) => {
+                // not masked levels at current bin
+                // get boolean values
+                var not_masked = masked.map((value, index) => {
+                    return !value;
+                });
+
+                // not masked level at current bin
+                // var nm_levels = not_masked.map((value, index) => {if(value) return this.rd[index]});
+                var nm_levels = [];
+                not_masked.forEach((value, index) => {
+                    if (value) nm_levels.push(this.rd[index]);
+                });
+
+                // console.log(bin_band, nm_levels);
+
+                // set the mask border
+                var mask_borders = [0];
+                var count = 0;
+
+                for (var i = 0; i < masked.length; i++) {
+                    if (masked[i]) {
+                        if (count > 0) {
+                            mask_borders.push(
+                                mask_borders[mask_borders.length - 1] + count - 1,
+                            );
+                            count = 0;
+                        }
+                    } else {
+                        count += 1;
+                    }
+                }
+
+                mask_borders.shift();
+                // repeating steps
+                for (var step = 0; step < repeats; step++) {
+                    var isig = this.get_rd_signal_bandwidth(nm_levels);
+                    // console.log(isig);
+                    var grad = new Array(nm_levels.length).fill(0);
+
+                    for (var i = 0; i < nm_levels.length; i++) {
+                        for (var j = i - 3 * bin_band; j <= i + 3 * bin_band + 1; j++) {
+                            if (j < 0 || j >= nm_levels.length) continue;
+                            if (Math.abs(i - j) >= nm_levels.length) continue;
+
+                            var g_value =
+                                (j - i) *
+                                Math.exp((-0.5 * (j - i) ** 2) / bin_band ** 2) *
+                                Math.exp(-0.5 * (nm_levels[i] - nm_levels[j]) ** 2 * isig[i]);
+                            // console.log(g_value);
+                            grad[i] += g_value;
+                        }
+                    }
+                    // console.log(grad);
+
+                    // get the border
+                    var border = new Array();
+                    for (var i = 0; i < grad.length - 1; i++) {
+                        if ((grad[i] < 0) & (grad[i + 1] >= 0)) border.push(i);
+                    }
+
+                    border.push(grad.length - 1);
+                    border = border.concat(mask_borders).sort((a, b) => a - b);
+                    border = Array.from(new Set(border));
+
+                    var pb = 0;
+                    for (var i = 0; i < border.length; i++) {
+                        var range_array = nm_levels.slice(pb, border[i] + 1);
+                        var range_mean =
+                            range_array.reduce((acc, n) => acc + n) / range_array.length;
+
+                        nm_levels.fill(range_mean, pb, border[i] + 1);
+                        pb = border[i] + 1;
+                    }
+                }
+
+                for (var i = 0, j = 0; i < levels.length; i++) {
+                    if (not_masked[i]) {
+                        levels[i] = nm_levels[j];
+                        j++;
+                    }
+                }
+
+                //get the border
+                var border = new Array();
+                for (var i = 0; i < levels.length - 1; i++) {
+                    //if(i == levels.length -1) continue;
+                    var diff = Math.abs(levels[i + 1] - levels[i]);
+
+                    if (diff > 0.01) border.push(i + 1);
+                }
+
+                border.unshift(0);
+                border.push(levels.length);
+
+                // reset the mask
+                masked = new Array(this.rd.length).fill(false);
+
+                // check the borders
+                for (var i = 1; i < border.length; i++) {
+                    var seg = [border[i - 1], border[i]];
+                    var seg_left = [border[i - 1], border[i - 1]];
+                    if (i > 1) {
+                        seg_left[0] = border[i - 2];
+                    } else continue;
+
+                    var seg_right = [border[i], border[i]];
+                    if (i < border.length - 1) {
+                        seg_right[1] = border[i + 1];
+                    } else continue;
+
+                    var n = seg[1] - seg[0];
+                    var n_left = seg_left[1] - seg_left[0];
+                    var n_right = seg_right[1] - seg_right[0];
+                    if (n <= 1) continue;
+                    var seg_array = new DataStat(levels.slice(seg[0], seg[1]));
+
+                    if (n_right <= 15 || n_left <= 15 || n <= 15) {
+                        var ns = 1.8 * Math.sqrt(levels[seg_left[0]] / this.mean) * this.std;
+                        if (Math.abs(levels[seg_left[0]] - levels[seg[0]]) < ns) {
+                            continue;
+                        }
+
+                        ns = 1.8 * Math.sqrt(levels[seg_right[0]] / this.mean) * this.std;
+                        if (Math.abs(levels[seg_right[0]] - levels[seg[0]]) < ns) {
+                            continue;
+                        }
+                    } else {
+                        var seg_left_array = levels.slice(seg_left[0], seg_left[1]);
+                        var seg_left_1 = new DataStat(seg_left_array);
+
+                        var seg_right_array = levels.slice(seg_right[0], seg_right[1]);
+                        var seg_right_1 = new DataStat(seg_right_array);
+
+                        var ttest_2sample_1 = t_test_2_samples(
+                            seg_array.mean,
+                            seg_array.std,
+                            seg_array.data.length,
+                            seg_left_1.mean,
+                            seg_left_1.std,
+                            seg_left_1.data.length,
+                        );
+                        if (
+                            ttest_2sample_1 >
+                            (0.01 / genome_size) * bin_size * (n + n_left)
+                        ) {
+                            continue;
+                        }
+
+                        var ttest_2sample_2 = t_test_2_samples(
+                            seg_array.mean,
+                            seg_array.std,
+                            seg_array.data.length,
+                            seg_right_1.mean,
+                            seg_right_1.std,
+                            seg_right_1.data.length,
+                        );
+                        if (
+                            ttest_2sample_2 >
+                            (0.01 / genome_size) * bin_size * (n + n_right)
+                        ) {
+                            continue;
+                        }
+                    }
+
+                    var ttest_1sample_1 = t_test_1_sample(
+                        this.mean,
+                        seg_array.mean,
+                        seg_array.std,
+                        seg_array.data.length,
+                    );
+                    if (ttest_1sample_1 > 0.05) {
+                        continue;
+                    }
+                    var raw_seg_data = new DataStat(this.rd.slice(seg[0], seg[1]));
+
+                    masked.fill(true, seg[0], seg[1]);
+                    levels.fill(raw_seg_data.mean, seg[0], seg[1]);
+                }
+            });
+            return levels;
+        }
+
+        cnv_calling(bin_size = 100000) {
+            var delta = 0.25;
+            var delta = delta * this.mean;
+
+            var min = this.mean - delta, max = this.mean + delta;
+            // console.log('min: ', min, ', Max: ', max)
+
+            // console.log('delta', delta)
+            var normal_genome_size = 2971000000;
+
+            var levels = this.meanShiftCaller();
+
+            
+            var merged_level = {};
+            var cnv_levels = [];
+            // var t_value = cdf(Math.abs(10), (5)) 
+            // console.log('Testing student t test:', t_value)
+
+            Object.entries(levels).forEach(([chr, chr_levels]) => {
+                
+                var done = false;
+                while (!done) {
+                    done = true;
+
+                    //
+                    // get the borders
+                    //
+                    var borders = new Array(1).fill(0);
+                    for (let i = 0; i < chr_levels.length - 1; i++) {
+                        var diff = Math.abs(chr_levels[i + 1] - chr_levels[i]);
+                        if (diff > 0.01) borders.push(i + 1);
+                    }
+                    borders.push(chr_levels.length);
+
+                    for (let ix = 0; ix < borders.length - 2; ix++) {
+                        var v1 = Math.abs(chr_levels[borders[ix]] - chr_levels[borders[ix + 1]]);
+                        // console.log(ix, v1);
+                        if (v1 < delta) {
+                            var v2 = v1 + 1, v3 = v1 + 1;
+
+                            if (ix > 0) { v2 = Math.abs(chr_levels[borders[ix]] - chr_levels[borders[ix - 1]]); }
+                            if (ix < borders.length - 3) { v3 = Math.abs(levels[borders[ix + 1]] - chr_levels[borders[ix + 2]]); }
+
+                            if (v1 < v2 && v1 < v3) {
+                                done = false;
+
+                                var tmp_array = new DataStat(chr_levels.slice(borders[ix], borders[ix + 2]));
+                                chr_levels.fill(tmp_array.mean, borders[ix], borders[ix + 2]);
+                                borders.splice(ix + 1, ix + 1);
+                            }
+                        }
+                    }
+                }
+                // console.log('updated levels', chr_levels)
+
+                // var chr_rd = this.rd[chr]
+                var chr_rd = [];
+                Object.entries(this.rd[chr]).forEach(([bin, binDict]) => { chr_rd.push(binDict.binScore); });
+                // console.log('cnv_calling', chr_rd)
+
+                //
+                // Calling Segments
+                //
+
+                //var flags = [""] * levels.length;
+                var flags = new Array(chr_levels.length).fill("");
+
+                // console.log('default levels', chr, chr_levels)
+                var b = 0;
+                var pval = (0.05 * bin_size) / normal_genome_size;
+                while (b < chr_levels.length) {
+                    var b0 = b, border_start = b;
+                    while ((b < chr_levels.length) & (chr_levels[b] < min)) {
+                        b += 1;
+                    }
+                    var border_end = b;
+
+                    if (border_end > border_start + 1) {
+                        // console.log('border min', border_start, border_end)
+                        var adj = adjustToEvalue(this.mean, this.std, chr_rd, border_start, border_end, pval);
+                        // console.log(adj)
+                        if (adj) {
+                            var border_start, border_end = adj;
+                            flags.fill("D", border_start, border_end);
+                        }
+                    }
+                    border_start = b;
+                    while ((b < chr_levels.length) & (chr_levels[b] > max)) { b += 1; }
+                    border_end = b;
+
+                    if (border_end > border_start + 1) {
+                        adj = adjustToEvalue(this.mean, this.std, chr_rd, border_start, border_end, pval);
+                        // console.log(adj)
+                        if (adj) {
+                            (border_end = adj);
+                            // flags[bs:be] = ["A"] * (be - bs)
+                            flags.fill("A", border_start, border_end);
+                        }
+                    }
+                    if (b == b0) b += 1;
+                }
+
+                //console.log(chr, 'segments', segments)
+                //
+                //  Calling additional deletions
+                //
+                b = 0;
+                while (b < chr_levels.length) {
+                    while ((b < chr_levels.length) & (flags[b] != "")) b += 1;
+                    border_start = b;
+                    while ((b < chr_levels.length) & (chr_levels[b] < min)) b += 1;
+                    border_end = b;
+                    if (border_end > border_start + 1) {
+                        if (gaussianEValue(this.mean, this.std, chr_rd, border_start, border_end) < 0.05 / normal_genome_size) {
+                            flags.fill(["d"] * (border_end - border_start), border_start, border_end);
+                        }
+                        b -= 1;
+                    }
+                    b += 1;
+                }
+
+                b = 0;
+                var cf;
+                if (b < chr_levels.length) cf = flags[b];
+
+                border_start = 0;
+
+                //var merge = [...this.rd]
+                var merge = [...chr_rd];
+                // console.log('initial merge', merge)
+                while (b < chr_levels.length) {
+                    while (flags[b] == cf) {
+                        b += 1;
+                        if (b >= flags.length) break;
+                    }
+                    if (b > border_start) {
+                        var merge_arr = new DataStat(merge.slice(border_start, b));
+                        merge.fill(merge_arr.mean, border_start, b);
+                    }
+                    if (b < chr_levels.length) cf = flags[b];
+                    border_start = b;
+                }
+
+                merged_level[chr] = merge;
+
+
+                //
+                // calculate calls
+                // 
+                b = 0;
+                while (b < chr_levels.length) {
+                    cf = flags[b];
+                    if (cf == "") {
+                        b += 1;
+                        continue
+                    }
+                    border_start = b;
+                    while (b < chr_levels.length & cf == flags[b]) { b += 1; }
+                    var border_arr = new DataStat(merge.slice(border_start, b));
+                    let cnv = border_arr.mean / this.mean;
+                    let event_type;
+                    if (cf == "D") {
+                        event_type = "deletion";
+                    } else {
+                        event_type = "duplication";
+                    }
+                    let cnv_dict = {
+                        chr: chr,
+                        start: bin_size * border_start + 1,
+                        end: bin_size * b,
+                        size: bin_size * (b - border_start + 1),
+                        value: cnv * 2,
+                        event_type: event_type
+                    };
+                    cnv_levels.push(cnv_dict);
+
+                }
+            });
+
+            return [merged_level, cnv_levels]
+        }
+    }
+
+
+
+    var read_depth_caller = { Partition };
+
+    class CNVpytorVCF {
+        constructor(allVariants, binSize) {
+            this.allVariants = allVariants;
+            this.rowBinSize = 10000;
+            this.binSize = binSize;
+            this.binFactor = binSize / this.rowBinSize;
+
+        }
+
+        async computeDepthFeatures() {
+
+            const chromosomes = Object.keys(this.allVariants);
+            const wigFeatures = [];
+
+            for (let chr of chromosomes) {
+                const variants = this.allVariants[chr];
+                if (variants.length === 0) continue
+
+                const firstSnp = variants[0];
+
+                let sum = 0;
+                let count = 0;
+                let binStart = firstSnp.start = firstSnp.start % this.binSize;   // Place start at integer multiple of binSize
+                let binEnd = binStart + this.binSize;
+                let featureBin = 0;
+
+                for (let snp of variants) {
+                    const position = snp.start + 1;    // Convert from 0-base to 1-base coords
+                    featureBin = Math.max(Math.floor((snp.start - 1) / this.binSize), 0);
+                    if (position > binEnd) {
+
+                        if (count > 0) {
+                            wigFeatures.push({ chr, start: binStart, end: binEnd, value: sum, bin: featureBin, count: count });
+                        }
+
+                        // Start new bin
+                        sum = 0;
+                        //count = 0
+                        binStart = snp.start - snp.start % this.binSize;
+                        binEnd = binStart + this.binSize;
+                    }
+
+                    const dpValue = snp.calls[9].info["DP"];
+                    // const dpValue = snp.getInfo("DP")
+
+                    if (dpValue) {
+                        sum += Number.parseInt(dpValue);
+                        count++;
+                    }
+                }
+
+                // final bin
+                if (count > 0) {
+                    wigFeatures.push({ chr, start: binStart, end: binEnd, value: sum, bin: featureBin, count: count });
+                }
+            }
+
+            return wigFeatures
+        }
+
+        // for for read depth calculation
+        async computeReadDepth() {
+            const chromosomes = Object.keys(this.allVariants);
+            var wigFeatures = {};
+
+            for (let chr of chromosomes) {
+                const variants = this.allVariants[chr];
+                var featureBin;
+                if (variants.length === 0) continue
+                for (let snp of variants) {
+                    featureBin = Math.max(Math.floor(snp.start / this.rowBinSize), 0);
+                    if (!wigFeatures[chr]) { wigFeatures[chr] = []; }
+                    if (!wigFeatures[chr][featureBin]) {
+
+                        wigFeatures[chr][featureBin] = {
+                            chr,
+                            start: featureBin * this.rowBinSize,
+                            end: (featureBin + 1) * this.rowBinSize,
+                            value: 0,
+                            sum_score: 0,
+                            count: 0,
+                        };
+                    }
+                    const dpValue = snp.calls[9].info["DP"];
+                    if (dpValue) {
+                        // sum += Number.parseInt(dpValue)
+                        wigFeatures[chr][featureBin].sum_score += Number.parseInt(dpValue);
+                        wigFeatures[chr][featureBin].count++;
+                    }
+
+                }
+                // for last bin
+                //let last_bin = wigFeatures[chr][featureBin]
+                //last_bin.value = parseInt(last_bin.sum_score / last_bin.count) * 100
+            }
+
+            // adjust the bin values to actual bin size
+            var avgbin = {};
+            for (let chr of chromosomes) {
+                if (!avgbin[chr]) { avgbin[chr] = []; }
+                for (let k = 0; k < wigFeatures[chr].length / this.binFactor; k++) {
+                    const featureBin = k;
+                    if (!avgbin[chr][k]) {
+                        avgbin[chr][k] = {
+                            chr,
+                            binScore: 0,
+                            start: featureBin * this.binSize,
+                            end: (featureBin + 1) * this.binSize,
+                        };
+                    }
+
+                    for (var j = k * 10; j < 10 * k + 10; j++) {
+                        if (wigFeatures[chr][j]) {
+                            var tmp_score = parseInt(wigFeatures[chr][j].sum_score / wigFeatures[chr][j].count) * 100;
+                            avgbin[chr][k].binScore += tmp_score;
+                        }
+                    }
+                }
+            }
+
+            var finalFeatureSet = this.readDepthMeanshift(avgbin);
+            return finalFeatureSet
+
+        }
+        readDepthMeanshift(wigFeatures) {
+
+            // Get global mean and standrad deviation
+            var fit_info = new g_utils.GetFit(wigFeatures);
+            var [globamMean, globalStd] = fit_info.fit_data();
+
+            // Apply partition method
+            var partition = new read_depth_caller.Partition(wigFeatures, globamMean, globalStd);
+            var partition_array = partition.meanShiftCaller();
+            var caller_array = partition.cnv_calling();
+
+            // Assign the partition values to each bin
+            Object.entries(wigFeatures).forEach(([chr, chr_rd]) => {
+                chr_rd.forEach((bin, index) => {
+                    bin.partition_level = parseInt(partition_array[chr][index]);
+                    bin.partition_call = parseInt(caller_array[0][chr][index]);
+                });
+            });
+
+            var rawbinScore = this.formatDataStructure(wigFeatures, 'binScore', globamMean);
+            var partition_levels = this.formatDataStructure(wigFeatures, 'partition_level', globamMean);
+            var partition_call = this.formatDataStructure(wigFeatures, 'partition_call', globamMean);
+
+            return [rawbinScore, partition_levels, partition_call, caller_array[1]]
+
+        }
+        formatDataStructure(wigFeatures, feature_column, scaling_factor = 1) {
+            const results = [];
+            for (const [chr, wig] of Object.entries(wigFeatures)) {
+
+                wig.forEach(sample => {
+                    var new_sample = { ...sample };
+                    if (scaling_factor != 1) {
+                        new_sample.value = sample[feature_column] / scaling_factor * 2;
+                    }
+                    results.push(new_sample);
+                });
+            }
+
+            return results
+        }
+
+        async computeBAF_v2() {
+
+            const chromosomes = Object.keys(this.allVariants);
+            const wigFeatures = {};
+            const baf1 = [], baf2 = [];
+
+            for (let chr of chromosomes) {
+                const variants = this.allVariants[chr];
+                if (variants.length === 0) continue
+                var featureBin;
+                for (let snp of variants) {
+                    featureBin = Math.max(Math.floor(snp.start / this.binSize), 0);
+
+                    if (!wigFeatures[chr]) {
+                        wigFeatures[chr] = [];
+                    }
+                    if (!wigFeatures[chr][featureBin]) {
+                        if (featureBin > 0) {
+                            // calculating the BAF likelihood for previous bin
+                            let previous_featureBin = featureBin - 1;
+                            if (wigFeatures[chr][previous_featureBin]) {
+
+                                const updated_bin = this.get_max_min_score(wigFeatures[chr][previous_featureBin]);
+
+                                if (updated_bin.value != 0.5) {
+                                    let baf_wig = Object.assign({}, updated_bin);
+                                    baf_wig.value = -2 * (1 - updated_bin.value);
+                                    baf2.push(baf_wig);
+                                }
+                                updated_bin.value = - 2 * updated_bin.value;
+                                wigFeatures[chr][previous_featureBin] = updated_bin;
+
+                                baf1.push(wigFeatures[chr][previous_featureBin]);
+
+                            }
+                        }
+                        wigFeatures[chr][featureBin] = {
+                            chr,
+                            start: featureBin * this.binSize,
+                            end: (featureBin + 1) * this.binSize,
+                            value: 0,
+                            count: 0,
+                            likelihood_score: [],
+                            min_score: 0,
+                        };
+                    }
+                    const calls = snp.calls[9];
+                    let genotype = calls.genotype;
+                    let ad_score = calls.info["AD"].split(',');
+                    let ad_a = ad_score[0], ad_b = ad_score[1];
+
+                    if ((genotype[0] == 0 && genotype[1] == 1) || (genotype[0] == 1 && genotype[1] == 0)) {
+                        //apply the beta function
+                        if (wigFeatures[chr][featureBin].likelihood_score.length == 0) {
+                            wigFeatures[chr][featureBin].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {
+                                return beta(ad_a, ad_b, value);
+                            });
+                        } else {
+                            var sum = 0;
+
+                            wigFeatures[chr][featureBin].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {
+                                var likelihood_value = wigFeatures[chr][featureBin].likelihood_score[index] * beta(ad_a, ad_b, value);
+                                sum = sum + likelihood_value;
+                                return likelihood_value;
+                            });
+
+                            wigFeatures[chr][featureBin].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {
+                                return wigFeatures[chr][featureBin].likelihood_score[index] / sum;
+                            });
+                        }
+                        wigFeatures[chr][featureBin].count++;
+                    }
+                }
+
+                // last feature bin
+                const updated_bin = this.get_max_min_score(wigFeatures[chr][featureBin]);
+
+                if (updated_bin.value != 0.5) {
+                    let baf_wig = Object.assign({}, updated_bin);
+                    baf_wig.value = -2 * (1 - updated_bin.value);
+                    baf2.push(baf_wig);
+                }
+                updated_bin.value = -2 * updated_bin.value;
+                wigFeatures[chr][featureBin] = updated_bin;
+                baf1.push(wigFeatures[chr][featureBin]);
+            }
+
+            return [baf1, baf2]
+
+        }
+
+
+        format_BAF_likelihood(wigFeatures) {
+            const results = [];
+
+            for (const [chr, wig] of Object.entries(wigFeatures)) {
+                wig.forEach(sample => {
+                    var new_sample = { ...sample };
+                    if (sample.value != 0.5) {
+                        new_sample.value = 1 - sample.value;
+                        results.push(new_sample);
+                    }
+                });
+            }
+            return results
+        }
+
+        get_max_min_score(sample) {
+
+            if (sample.likelihood_score.length > 0) {
+                const max = Math.max(...sample.likelihood_score);
+                const res = sample.likelihood_score.indexOf(max);
+                sample.value = Math.max(res / 100, 1 - res / 100);
+                sample.min_score = Math.min(res / 100, 1 - res / 100);
+
+            } else {
+                sample.score = 0;
+            }
+
+            return sample
+        }
+
+        async getAllbins() {
+            const bins = await this.computeDepthFeatures();
+
+            //console.log('getAllbins', bins["value"])
+
+            const fitter = new g_utils.GetFit(bins);
+
+            fitter.fit_data();
+            //  dconsole.log('rd list', distParams)
+
+            return bins
+        }
+
+        async read_rd_baf(caller='ReadDepth'){
+            
+            const chromosomes = Object.keys(this.allVariants);
+            var wigFeatures = {};
+
+            for (let chr of chromosomes) {
+                const variants = this.allVariants[chr];
+                var featureBin;
+                if (variants.length === 0) continue
+                for (let snp of variants) {
+                    featureBin = Math.max(Math.floor(snp.start / this.rowBinSize), 0);
+                    if (!wigFeatures[chr]) { wigFeatures[chr] = []; }
+                    if (!wigFeatures[chr][featureBin]) {
+
+                        wigFeatures[chr][featureBin] = {
+                            chr,
+                            start: featureBin * this.rowBinSize,
+                            end: (featureBin + 1) * this.rowBinSize,
+                            // value: 0,
+                            dp_sum_score: 0,
+                            dp_count: 0,
+                            hets_count:0,
+                            hets: [],
+                            //likelihood_score: [],
+                        };
+                    }
+                    const calls = snp.calls[9];
+                    const dpValue = calls.info["DP"];
+                    if (dpValue) {
+                        
+                        wigFeatures[chr][featureBin].dp_sum_score += Number.parseInt(dpValue);
+                        wigFeatures[chr][featureBin].dp_count++;
+                    }
+                    
+                    let ad_score = calls.info["AD"].split(',');
+                    let genotype = calls.genotype;
+                    if ((genotype[0] == 0 && genotype[1] == 1) || (genotype[0] == 1 && genotype[1] == 0)) {
+                        //apply the beta function
+                        wigFeatures[chr][featureBin].hets_count++;
+                        let ad_a = parseInt(ad_score[0]), ad_b = parseInt(ad_score[1]);
+                        wigFeatures[chr][featureBin].hets.push({ref:ad_a, alt:ad_b});
+                    }
+               
+                }
+            
+            }
+        
+            var avgbin = this.adjust_bin_size(wigFeatures);
+            var finalFeatureSet;
+            if(caller == 'ReadDepth'){
+                finalFeatureSet = this.readDepthMeanshift(avgbin);
+                var baf = this.formatDataStructure_BAF(avgbin, 'max_likelihood');
+            }else if(caller=='2D'){
+                
+                let caller_obj = new combined_caller.CombinedCaller(avgbin,  this.binSize);        
+                let processed_bins = await caller_obj.call_2d();
+                
+                finalFeatureSet = [processed_bins.binScore, [], processed_bins.segment_score];
+        
+                var baf = caller_obj.formatDataStructure_BAF('max_likelihood');
+            }
+            
+
+            return [finalFeatureSet, baf]
+        }
+
+        formatDataStructure_BAF(wigFeatures, feature_column, scaling_factor = 2) {
+            const baf1 = [];
+            const baf2 = [];
+            for (const [chr, wig] of Object.entries(wigFeatures)) {
+
+                wig.forEach(sample => {
+                    delete sample.likelihood_score;
+                    var baf1_value = { ...sample };
+                    var baf2_value = { ...sample };
+                    
+                    let value = sample[feature_column];
+                    if (value != 0.5){
+                        baf2_value.value = -2 * (1 - value);
+                        baf2.push(baf2_value);
+                    }
+                    baf1_value.value = -2 * value;
+                    baf1.push(baf1_value);
+                        
+                });
+            }
+            
+
+            return [baf1, baf2]
+        }
+        
+        adjust_bin_size(wigFeatures){
+            const chromosomes = Object.keys(this.allVariants);
+            // adjust the bin values to actual bin size
+            var avgbin = {};
+            for (let chr of chromosomes) {
+                if (!avgbin[chr]) { avgbin[chr] = []; }
+                for (let k = 0; k < wigFeatures[chr].length / this.binFactor; k++) {
+                    const featureBin = k;
+                    if (!avgbin[chr][k]) {
+                        avgbin[chr][k] = {
+                            chr,
+                            start: featureBin * this.binSize,
+                            end: (featureBin + 1) * this.binSize,
+                            dp_count: 0,
+                            hets_count: 0,
+                            binScore: 0,
+                            likelihood_score: [],
+                        };
+                    }
+
+                    for (var j = k * 10; j < 10 * k + 10; j++) {
+                       
+                        if (wigFeatures[chr][j]) {
+                            var tmp_score = parseInt(wigFeatures[chr][j].dp_sum_score / wigFeatures[chr][j].dp_count) * 100;
+                            avgbin[chr][k].binScore += tmp_score;
+                            avgbin[chr][k].dp_count += wigFeatures[chr][j].dp_count;
+                            avgbin[chr][k].hets_count += wigFeatures[chr][j].hets_count;
+
+                            if (wigFeatures[chr][j].hets.length != 0){
+                            
+                                
+                                wigFeatures[chr][j].hets.forEach((hets, hets_idx) => {
+                                    if(avgbin[chr][k].likelihood_score.length == 0){
+                                        avgbin[chr][k].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {
+                                            return beta(hets.ref, hets.alt, value);
+                                        });
+                                    }
+                                    else {
+                                        var likelihood_sum = 0;
+                                        avgbin[chr][k].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {
+                                            var likelihood_value = avgbin[chr][k].likelihood_score[index] * beta(hets.ref, hets.alt, value);
+                                            likelihood_sum += likelihood_value;
+                                            return likelihood_value;
+                                        });
+
+                                        avgbin[chr][k].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {
+                                            return avgbin[chr][k].likelihood_score[index] / likelihood_sum;
+                                        });
+                           
+                                    }
+                                });
+                                
+                                // avgbin[chr][k].likelihood_score *= wigFeatures[chr][j].likelihood_score
+                            }
+                        }
+                    }
+
+                    const updated_bin = this.get_max_min_score(avgbin[chr][k]);
+                    avgbin[chr][k].max_likelihood = updated_bin.value;
+                }
+            }
+            return avgbin
+        }
+
+    }
+
+    function beta(a, b, p, phased = true) {
+        return p ** a * (1 - p) ** b + p ** b * (1 - p) ** a;
+    }
+
+    /*
+    * The MIT License (MIT)
+    *
+    * Copyright (c) 2016-2017 The Regents of the University of California
+    * Author: Arijit Panda
+    *
+    * Permission is hereby granted, free of charge, to any person obtaining a copy
+    * of this software and associated documentation files (the "Software"), to deal
+    * in the Software without restriction, including without limitation the rights
+    * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+    * copies of the Software, and to permit persons to whom the Software is
+    * furnished to do so, subject to the following conditions:
+    *
+    * The above copyright notice and this permission notice shall be included in
+    * all copies or substantial portions of the Software.
+    *
+    *
+    * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+    * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+    * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+    * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+    * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+    * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+    * THE SOFTWARE.
+    */
+
+
+    /**
+     * Represents 2 or more wig tracks overlaid on a common viewport.
+     */
+
+    const DEFAULT_TRACK_HEIGHT = 250;
+
+    class CNVPytorTrack extends TrackBase {
+
+        constructor(config, browser) {
+            super(config, browser);
+            this.featureType = 'numeric';
+            this.paintAxis = paintAxis;
+            
+            if (!config.max) {
+                this.defaultScale = true;
+                this.autoscale = false;
+            }
+
+            // Invoke height setter last to allocated to coverage and alignment tracks
+            this.height = (config.height !== undefined ? config.height : DEFAULT_TRACK_HEIGHT);
+        }
+
+        async init(config) {
+
+            this.type = "cnvpytor";
+            this.graphType = config.graphType || "points";
+            this.bin_size = config.bin_size || 100000;
+            this.signal_name = config.signal_name || "rd_snp";
+            this.cnv_caller = config.cnv_caller || '2D';
+            this.colors = config.colors || ['gray', 'black', 'green', 'blue'];
+            super.init(config);
+
+        }
+
+        get supportsWholeGenome() {
+            return true
+        }
+
+        get_signals() {
+            let signals = [];
+
+            if (this.signal_name == 'rd_snp') {
+                signals = ["RD_Raw", "RD_Raw_gc_coor", this.cnv_caller, "BAF1", "BAF2"];
+
+            } else if (this.signal_name == 'rd') {
+                signals = ["RD_Raw", "RD_Raw_gc_coor", this.cnv_caller];
+
+            } else if (this.signal_name == 'snp') {
+                signals = ["BAF1", "BAF2"];
+
+            } else if (this.signal_name == 'cnh') {
+                signals = [this.cnv_caller];
+            }
+            return signals
+        }
+
+        get_signal_colors() {
+            
+            let signal_colors = [
+                { singal_name: 'RD_Raw', color: this.colors[0] },
+                { singal_name: 'RD_Raw_gc_coor', color: this.colors[1] },
+                { singal_name: 'ReadDepth', color: this.colors[2] },
+                { singal_name: '2D', color: this.colors[2] },
+                { singal_name: 'BAF1', color: this.colors[3] },
+                { singal_name: 'BAF2', color: this.colors[3] },
+            ];
+            return signal_colors
+        }
+
+        async postInit() {
+
+            if (this.config.format == 'vcf') {
+                this.featureSource = FeatureSource(this.config, this.browser.genome);
+                this.header = await this.getHeader();
+
+
+                var allVariants = this.featureSource.reader.features.reduce(function (r, a) {
+                    r[a.chr] = r[a.chr] || [];
+                    r[a.chr].push(a);
+                    return r
+                }, Object.create(null));
+
+                const cnvpytor_obj = new CNVpytorVCF(allVariants, this.bin_size);
+                
+                let wigFeatures;
+                let bafFeatures;
+                this.wigFeatures_obj = {};
+                this.wigFeatures_obj[this.bin_size] = {};
+
+                let dataWigs;
+                if(this.config.cnv_caller == '2D'){
+                    
+                    dataWigs = await cnvpytor_obj.read_rd_baf('2D');
+
+                    wigFeatures = dataWigs[0];
+                    bafFeatures = dataWigs[1];
+                    this.wigFeatures_obj[this.bin_size]['2D'] = wigFeatures[2];
+
+                    this.available_callers = ['2D'];
+                }else {
+                    dataWigs = await cnvpytor_obj.read_rd_baf();
+                    wigFeatures = dataWigs[0];
+                    bafFeatures = dataWigs[1];
+                    this.wigFeatures_obj[this.bin_size]['ReadDepth'] = wigFeatures[2];
+                    this.available_callers = ['ReadDepth'];
+                }
+                
+                this.wigFeatures_obj[this.bin_size]['RD_Raw'] = wigFeatures[0];
+                this.wigFeatures_obj[this.bin_size]['RD_Raw_gc_coor'] = wigFeatures[1];
+                this.wigFeatures_obj[this.bin_size]['BAF1'] = bafFeatures[0];
+                this.wigFeatures_obj[this.bin_size]['BAF2'] = bafFeatures[1];
+                
+                this.available_bins = [this.bin_size];
+                
+                this.set_available_callers();
+
+            } else {
+                this.cnvpytor_obj =   new HDF5Reader(this.config.url, this.bin_size);
+                this.wigFeatures_obj = await this.cnvpytor_obj.get_rd_signal(this.bin_size);
+                this.available_bins = this.cnvpytor_obj.available_bins;
+                this.available_callers = this.cnvpytor_obj.callers;
+                this.set_available_callers();
+            }
+
+            this.tracks = [];
+            const p = [];
+
+            this.signals = this.get_signals();
+            this.signal_colors = this.get_signal_colors();
+
+            for (let bin_size in this.wigFeatures_obj) {
+
+                for (const [signal_name, wig] of Object.entries(this.wigFeatures_obj[bin_size])) {
+
+                    if (this.signals.includes(signal_name)) {
+                        let tconf = {};
+                        tconf.type = "wig";
+                        tconf.isMergedTrack = true;
+                        tconf.features = wig;
+                        tconf.name = signal_name;
+                        tconf.color = this.signal_colors.filter(x => x.singal_name === signal_name).map(x => x.color);
+                        const t = await this.browser.createTrack(tconf);
+                        if (t) {
+                            t.autoscale = false;     // Scaling done from merged track
+                            this.tracks.push(t);
+                        } else {
+                            console.warn("Could not create track " + tconf);
+                        }
+
+                        if (typeof t.postInit === 'function') {
+                            p.push(t.postInit());
+                        }
+                    }
+                }
+
+            }
+
+
+            this.flipAxis = this.config.flipAxis ? this.config.flipAxis : false;
+            this.logScale = this.config.logScale ? this.config.logScale : false;
+            this.autoscale = this.config.autoscale;
+            if (!this.autoscale) {
+                this.dataRange = {
+                    min: this.config.min || 0,
+                    max: this.config.max
+                };
+            }
+            for (let t of this.tracks) {
+                t.autoscale = false;
+                t.dataRange = this.dataRange;
+            }
+
+            return Promise.all(p)
+        }
+
+        set_available_callers() {
+            if (!this.available_callers.includes(this.cnv_caller)) {
+                if (this.available_callers.length > 0) {
+                    this.cnv_caller = this.available_callers[0];
+                } else {
+                    this.cnv_caller = null;
+                }
+            }
+        }
+
+        async getHeader() {
+
+            if (!this.header) {
+                if (typeof this.featureSource.getHeader === "function") {
+                    const header = await this.featureSource.getHeader();
+                    if (header) {
+                        this.callSets = header.callSets || [];
+                    }
+                    this.header = header;
+                }
+                this.sampleNames = this.callSets ? this.callSets.map(cs => cs.name) : [];
+            }
+
+            return this.header
+        }
+
+        get height() {
+            return this._height
+        }
+
+        set height(h) {
+            this._height = h;
+            if (this.tracks) {
+                for (let t of this.tracks) {
+                    t.height = h;
+                    t.config.height = h;
+                }
+            }
+        }
+
+        menuItemList() {
+            let items = [];
+
+            if (this.flipAxis !== undefined) {
+                items.push({
+                    label: "Flip y-axis",
+                    click: () => {
+                        this.flipAxis = !this.flipAxis;
+                        this.trackView.repaintViews();
+                    }
+                });
+            }
+
+            items = items.concat(MenuUtils.numericDataMenuItems(this.trackView));
+
+            items.push('<hr/>');
+            items.push("Bin Sizes");
+            for (let rd_bin of this.available_bins) {
+                const checkBox = createCheckbox(rd_bin, rd_bin === this.bin_size);
+                items.push({
+                    object: $$1(checkBox),
+                    click: async () => {
+                        this.bin_size = rd_bin;
+
+                        await this.recreate_tracks(rd_bin);
+                        this.clearCachedFeatures();
+                        this.trackView.updateViews();
+                        this.trackView.repaintViews();
+                    }
+                });
+            }
+            items.push('<hr/>');
+            items.push("Signal Type");
+
+            let signal_dct = {"rd_snp": "RD and BAF Likelihood", "rd": "RD Signal", "snp": "BAF Likelihood"};
+            for (let signal_name in signal_dct) {
+                const checkBox = createCheckbox(signal_dct[signal_name], signal_name === this.signal_name);
+                items.push({
+                    object: $$1(checkBox),
+                    click: async () => {
+                        this.signal_name = signal_name;
+                        await this.recreate_tracks(this.bin_size);
+                        this.clearCachedFeatures();
+                        this.trackView.updateViews();
+                        this.trackView.repaintViews();
+
+                    }
+                });
+            }
+
+            // cnv caller setting
+            items.push('<hr/>');
+            items.push("CNV caller");
+            for (let cnv_caller of this.available_callers) {
+                const checkBox = createCheckbox(cnv_caller, cnv_caller === this.cnv_caller);
+                items.push({
+                    object: $$1(checkBox),
+                    click: async () => {
+                        this.cnv_caller = cnv_caller;
+                        await this.recreate_tracks(this.bin_size);
+                        this.clearCachedFeatures();
+                        this.trackView.updateViews();
+                        this.trackView.repaintViews();
+                    }
+                });
+            }
+
+            return items
+        }
+
+        async recreate_tracks(bin_size) {
+            this.tracks = [];
+            const p = [];
+
+            if (!(bin_size in this.wigFeatures_obj)) {
+                this.wigFeatures_obj = {...this.wigFeatures_obj, ...await this.cnvpytor_obj.get_rd_signal(bin_size)};
+            }
+
+            this.signals = this.get_signals();
+            this.signal_colors = this.get_signal_colors();
+
+            for (const [signal_name, wig] of Object.entries(this.wigFeatures_obj[bin_size])) {
+                if (this.signals.includes(signal_name)) {
+                    let tconf = {};
+                    tconf.type = "wig";
+                    tconf.isMergedTrack = true;
+                    tconf.features = wig;
+                    tconf.name = signal_name;
+                    tconf.color = this.signal_colors.filter(x => x.singal_name === signal_name).map(x => x.color); 
+                    const t = await this.browser.createTrack(tconf);
+                    if (t) {
+                        t.autoscale = false;     // Scaling done from merged track
+                        this.tracks.push(t);
+                    } else {
+                        console.warn("Could not create track " + tconf);
+                    }
+
+                    if (typeof t.postInit === 'function') {
+                        p.push(t.postInit());
+                    }
+                }
+
+            }
+
+
+            this.flipAxis = this.config.flipAxis ? this.config.flipAxis : false;
+            this.logScale = this.config.logScale ? this.config.logScale : false;
+            this.autoscale = this.config.autoscale;
+            if (!this.autoscale) {
+                this.dataRange = {
+                    min: this.config.min || 0,
+                    max: this.config.max
+                };
+            }
+            for (let t of this.tracks) {
+                t.autoscale = false;
+                t.dataRange = this.dataRange;
+            }
+            return Promise.all(p)
+        }
+
+        async getFeatures(chr, bpStart, bpEnd, bpPerPixel) {
+
+            if(this.tracks) {
+                const promises = this.tracks.map((t) => t.getFeatures(chr, bpStart, bpEnd, bpPerPixel));
+                return Promise.all(promises)
+            } else {
+                return undefined  // This can happen if a redraw is triggered before the track has initialized.
+            }
+        }
+
+        // TODO: refactor to igvUtils.js
+        getScaleFactor(min, max, height, logScale) {
+            const scale = logScale ? height / (Math.log10(max + 1) - (min <= 0 ? 0 : Math.log10(min + 1))) : height / (max - min);
+            return scale
+        }
+
+        computeYPixelValue(yValue, yScaleFactor) {
+            return (this.flipAxis ? (yValue - this.dataRange.min) : (this.dataRange.max - yValue)) * yScaleFactor
+        }
+
+        computeYPixelValueInLogScale(yValue, yScaleFactor) {
+            let maxValue = this.dataRange.max;
+            let minValue = this.dataRange.min;
+            if (maxValue <= 0) return 0 // TODO:
+            if (minValue <= -1) minValue = 0;
+            minValue = (minValue <= 0) ? 0 : Math.log10(minValue + 1);
+            maxValue = Math.log10(maxValue + 1);
+            yValue = Math.log10(yValue + 1);
+            return ((this.flipAxis ? (yValue - minValue) : (maxValue - yValue)) * yScaleFactor)
+        }
+
+        draw(options) {
+
+            // const mergedFeatures = options.features    // Array of feature arrays, 1 for each track
+            const mergedFeatures = options.features;
+            if(!mergedFeatures) return
+
+            if (this.defaultScale) {
+                if (this.signal_name == 'rd_snp') {
+                    this.dataRange = {
+                        min: this.config.min || this.dataRange.min || -2,
+                        max: this.config.max || this.dataRange.max || 6
+                    };
+                } else if (this.signal_name == 'rd') {
+                    this.dataRange = {
+                        min: this.config.min || this.dataRange.min || 0,
+                        max: this.config.max || this.dataRange.max || 6
+                    };
+                } else if (this.signal_name == 'snp') {
+                    this.dataRange = {
+                        min: this.config.min || this.dataRange.min || -2,
+                        max: this.config.max || this.dataRange.max || 0
+                    };
+                }
+            }
+
+            if (this.autoscale) {
+                this.dataRange = autoscale(options.referenceFrame.chr, mergedFeatures);
+            }
+
+            if(this.tracks) {
+                for (let i = 0, len = this.tracks.length; i < len; i++) {
+                    const trackOptions = Object.assign({}, options);
+                    trackOptions.features = mergedFeatures[i];
+                    this.tracks[i].dataRange = this.dataRange;
+                    this.tracks[i].flipAxis = this.flipAxis;
+                    this.tracks[i].logScale = this.logScale;
+                    if (this.graphType) {
+                        this.tracks[i].graphType = this.graphType;
+                    }
+                    this.tracks[i].draw(trackOptions);
+                }
+            }
+
+            // guides lines
+            const scaleFactor = this.getScaleFactor(this.dataRange.min, this.dataRange.max, options.pixelHeight, this.logScale);
+            const yScale = (yValue) => this.logScale
+                ? this.computeYPixelValueInLogScale(yValue, scaleFactor)
+                : this.computeYPixelValue(yValue, scaleFactor);
+
+             // Draw guidelines
+             if (this.config.hasOwnProperty('guideLines')) {
+                for (let line of this.config.guideLines) {
+                    if (line.hasOwnProperty('color') && line.hasOwnProperty('y') && line.hasOwnProperty('dotted')) {
+                        let y = yScale(line.y);
+                        let props = {
+                            'strokeStyle': line['color'],
+                            'strokeWidth': 1
+                        };
+                        if (line['dotted']) IGVGraphics.dashedLine(options.context, 0, y, options.pixelWidth, y, 5, props);
+                        else IGVGraphics.strokeLine(options.context, 0, y, options.pixelWidth, y, props);
+                    }
+                }
+            }
+        }
+
+        popupData(clickState, features) {
+
+            const featuresArray = features || clickState.viewport.cachedFeatures;
+
+            if (featuresArray && featuresArray.length === this.tracks.length) {
+                // Array of feature arrays, 1 for each track
+                const popupData = [];
+                for (let i = 0; i < this.tracks.length; i++) {
+                    if (i > 0) popupData.push('<hr/>');
+                    popupData.push(`<div style=background-color:rgb(245,245,245);border-bottom-style:dashed;border-bottom-width:1px;padding-bottom:5px;padding-top:10px;font-weight:bold;font-size:larger >${this.tracks[i].name}</div>`);
+                    const trackPopupData = this.tracks[i].popupData(clickState, featuresArray[i]);
+                    popupData.push(...trackPopupData);
+
+                }
+                return popupData
+            }
+        }
+
+    }
+
+    function autoscale(chr, featureArrays) {
+
+        let min = 0;
+        let max = -Number.MAX_VALUE;
+        for (let features of featureArrays) {
+            for (let f of features) {
+                if (typeof f.value !== 'undefined' && !Number.isNaN(f.value)) {
+                    min = Math.min(min, f.value);
+                    max = Math.max(max, f.value);
+                }
+            }
+        }
+        return {min: min, max: max}
+    }
+
+    //import CNVPytorTrack from "./CNVpytor/cnvpytorTrack.js"
+
+
+    const trackFunctions =
+        new Map([
+            ['ideogram', (config, browser) => new IdeogramTrack(config, browser)],
+            ['sequence', (config, browser) => new SequenceTrack(config, browser)],
+            ['feature', (config, browser) => new FeatureTrack(config, browser)],
+            ['seg', (config, browser) => new SegTrack(config, browser)],
+            ['mut', (config, browser) => new SegTrack(config, browser)],
+            ['maf', (config, browser) => new SegTrack(config, browser)],
+            ['wig', (config, browser) => new WigTrack(config, browser)],
+            ['merged', (config, browser) => new MergedTrack(config, browser)],
+            ['alignment', (config, browser) => new BAMTrack(config, browser)],
+            ['interaction', (config, browser) => new InteractionTrack(config, browser)],
+            ['interact', (config, browser) => new InteractionTrack(config, browser)],
+            ['variant', (config, browser) => new VariantTrack(config, browser)],
+            ['eqtl', (config, browser) => new EqtlTrack(config, browser)],
+            ['gwas', (config, browser) => new GWASTrack(config, browser)],
+            ['arc', (config, browser) => new RnaStructTrack(config, browser)],
+            ['gcnv', (config, browser) => new GCNVTrack(config, browser)],
+            ['junction', (config, browser) => new SpliceJunctionTrack(config, browser)],
+            ['blat', (config, browser) => new BlatTrack(config, browser)],
+            ['cnvpytor', (config, browser) => new CNVPytorTrack(config, browser)]
+        ]);
+
+
+    /**
+     * Add a track constructor  the the factory lookup table.
+     *
+     * @param type
+     * @param track
+     */
+    const addTrackCreatorFunction = function (type, track) {
+        trackFunctions.set(type, track);
+    };
+
+    const getTrack = function (type, config, browser) {
+
+        let trackKey;
+        switch (type) {
+            case "annotation":
+            case "genes":
+            case "fusionjuncspan":
+            case "snp":
+                trackKey = "feature";
+                break
+            case 'seg':
+            case 'maf':
+            case 'mut':
+                trackKey = 'seg';
+                break
+            case 'junctions':
+            case 'splicejunctions':
+                trackKey = 'junction';
+                break
+            default:
+                trackKey = type;
+        }
+
+        return trackFunctions.has(trackKey) ?
+            trackFunctions.get(trackKey)(config, browser) :
+            undefined
+    };
+
+    var TrackFactory = {
+        tracks: trackFunctions,
+        addTrack: addTrackCreatorFunction,
+        trackFunctions,
+        addTrackCreatorFunction,
+        getTrack
+    };
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2017 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+
+    /**
+     * Minimal support for the legacy IGV desktop session format.
+     */
+
+    class XMLSession {
+
+        constructor(xmlString, knownGenomes) {
+
+            const parser = new DOMParser();
+            const xmlDoc = parser.parseFromString(xmlString, "text/xml");
+
+            this.processRootNode(xmlDoc, knownGenomes);
+
+            const resourceElements = xmlDoc.getElementsByTagName("Resource");
+            const trackElements = xmlDoc.getElementsByTagName("Track");
+            const hasTrackElements = trackElements && trackElements.length > 0;
+
+            const tracks = [];
+            this.tracks = tracks;
+
+            const resourceMap = new Map();
+            Array.from(resourceElements).forEach(function (r, idx) {
+                var config = {
+                    url: r.getAttribute("path"),
+                    indexURL: r.getAttribute("index"),
+                    order: idx
+                };
+                resourceMap.set(config.url, config);
+                if (!hasTrackElements) {
+                    tracks.push(config);
+                }
+            });
+
+            // Check for optional Track section
+            if (hasTrackElements) {
+
+                Array.from(trackElements).forEach(function (track) {
+
+                    const subtracks = track.getElementsByTagName("Track");
+
+                    if (subtracks && subtracks.length > 0) {
+
+                        const mergedTrack = {
+                            type: 'merged',
+                            tracks: []
+                        };
+                        extractTrackAttributes(track, mergedTrack);
+
+                        tracks.push(mergedTrack);
+
+                        Array.from(subtracks).forEach(function (t) {
+                            t.processed = true;
+                            const id = t.getAttribute("id");
+                            const config = resourceMap.get(id);
+                            if (config) {
+                                mergedTrack.tracks.push(config);
+                                extractTrackAttributes(t, config);
+                                config.autoscale = false;
+                                mergedTrack.height = config.height;
+
+                                // Add alpha for merged track colors.  Alpha is not recorded by IGV desktop in XML session
+                                //const color = t.getAttribute("color");
+                                //if (color) {
+                                //    config.color = "rgba(" + color + ",0.5)";
+                                //}
+                            }
+                        });
+                    } else if (!track.processed) {
+
+                        const id = track.getAttribute("id");
+                        const res = resourceMap.get(id);
+                        if (res) {
+                            tracks.push(res);
+                            extractTrackAttributes(track, res);
+                        }
+
+                    }
+                });
+            }
+        }
+
+        processRootNode(xmlDoc, knownGenomes) {
+
+            const elements = xmlDoc.getElementsByTagName("Session");
+            if (!elements || elements.length === 0) ;
+            const session = elements.item(0);
+            const genome = session.getAttribute("genome");
+            const locus = session.getAttribute("locus");
+            const ucscID = session.getAttribute("ucscID");
+
+            if (knownGenomes && knownGenomes.hasOwnProperty(genome)) {
+                this.genome = genome;
+
+            } else {
+                this.reference = {
+                    fastaURL: genome
+                };
+                if (ucscID) {
+                    this.reference.id = ucscID;
+                }
+            }
+            if (locus) {
+                this.locus = locus;
+            }
+        }
+
+    }
+
+
+    function extractTrackAttributes(track, config) {
+
+
+        config.name = track.getAttribute("name");
+
+        const color = track.getAttribute("color");
+        if (color) {
+            config.color = "rgb(" + color + ")";
+        }
+
+        const altColor = track.getAttribute("altColor");
+        if (color) {
+            config.altColor = "rgb(" + altColor + ")";
+        }
+
+        const height = track.getAttribute("height");
+        if (height) {
+            config.height = parseInt(height);
+        }
+
+        const autoScale = track.getAttribute("autoScale");
+        if (autoScale) {
+            config.autoscale = (autoScale === "true");
+        }
+
+        const autoscaleGroup = track.getAttribute("autoscaleGroup");
+        if (autoscaleGroup) {
+            config.autoscaleGroup = autoscaleGroup;
+        }
+
+        const windowFunction = track.getAttribute("windowFunction");
+        if (windowFunction) {
+            config.windowFunction = windowFunction;
+        }
+        const visWindow = track.getAttribute("visibilityWindow") || track.getAttribute("featureVisibilityWindow");
+        if (visWindow) {
+            config.visibilityWindow = visWindow;
+        }
+
+        const indexed = track.getAttribute("indexed");
+        if (indexed) {
+            config.indexed = (indexed === "true");
+        }
+
+        const normalize = track.getAttribute("normalize");
+        if (normalize) {
+            config.normalize = normalize === "true";
+        }
+
+        const dataRangeCltn = track.getElementsByTagName("DataRange");
+        if (dataRangeCltn.length > 0) {
+            const dataRange = dataRangeCltn.item(0);
+            config.min = Number(dataRange.getAttribute("minimum"));
+            config.max = Number(dataRange.getAttribute("maximum"));
+            config.logScale = dataRange.getAttribute("type") === "LOG";
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014-2015 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const splitLines = splitLines$5;
+
+    class SampleInformation {
+        constructor() {
+            this.attributes = {};
+            this.plinkLoaded = false;
+        }
+
+        async loadPlinkFile(url, config) {
+
+            if (!config) config = {};
+
+            var options = buildOptions(config);    // Add oauth token, if any
+            const data = await igvxhr.loadString(url, options);
+            var lines = splitLines(data);
+
+            for (let line of lines) {
+                var line_arr = line.split(' ');
+                this.attributes[line_arr[1]] = {
+                    familyId: line_arr[0],
+                    fatherId: line_arr[2],
+                    motherId: line_arr[3],
+                    sex: line_arr[4],
+                    phenotype: line_arr[5]
+                };
+            }
+            this.plinkLoaded = true;
+            return this
+        }
+
+        /**
+         * Return the attributes for the given sample as a map-like object (key-value pairs)
+         * @param sample
+         */
+        getAttributes(sample) {
+            return this.attributes[sample]
+        };
+
+        getAttributeNames() {
+
+            if (this.hasAttributes()) {
+                return Object.keys(this.attributes[Object.keys(this.attributes)[0]])
+            } else return []
+        };
+
+        hasAttributes() {
+            return Object.keys(this.attributes).length > 0
+        }
+    }
+
+    function loadPlinkFile(url, config) {
+        const si = new SampleInformation();
+        return si.loadPlinkFile(url, config)
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class GtexSelection {
+
+        constructor(gene, snp) {
+            this.geneColors = {};
+            this.gene = null;
+            this.snp = null;
+            this.genesCount = 0;
+
+            if (gene) {
+                this.gene = gene.toUpperCase();
+                this.geneColors[this.gene] = brewer[this.genesCount++];
+
+            }
+            if (snp) {
+                this.snp = snp.toUpperCase();
+            }
+        }
+
+        addGene(geneName) {
+            if (!this.geneColors[geneName.toUpperCase()]) {
+                this.geneColors[geneName.toUpperCase()] = brewer[this.genesCount++];
+            }
+        }
+
+        colorForGene(geneName) {
+            return this.geneColors[geneName.toUpperCase()]
+        }
+    }
+
+    var brewer = [];
+    // Set +!
+    brewer.push("rgb(228,26,28)");
+    brewer.push("rgb(55,126,184)");
+    brewer.push("rgb(77,175,74)");
+    brewer.push("rgb(166,86,40)");
+    brewer.push("rgb(152,78,163)");
+    brewer.push("rgb(255,127,0)");
+    brewer.push("rgb(247,129,191)");
+    brewer.push("rgb(153,153,153)");
+    brewer.push("rgb(255,255,51)");
+
+    // #Set 2
+    brewer.push("rgb(102, 194, 165");
+    brewer.push("rgb(252, 141, 98");
+    brewer.push("rgb(141, 160, 203");
+    brewer.push("rgb(231, 138, 195");
+    brewer.push("rgb(166, 216, 84");
+    brewer.push("rgb(255, 217, 47");
+    brewer.push("rgb(229, 196, 148");
+    brewer.push("rgb(179, 179, 179");
+
+    //#Set 3
+    brewer.push("rgb( 141, 211, 199");
+    brewer.push("rgb(255, 255, 179");
+    brewer.push("rgb(190, 186, 218");
+    brewer.push("rgb(251, 128, 114");
+    brewer.push("rgb(128, 177, 211");
+    brewer.push("rgb(253, 180, 98");
+    brewer.push("rgb(179, 222, 105");
+    brewer.push("rgb(252, 205, 229");
+    brewer.push("rgb(217, 217, 217");
+    brewer.push("rgb(188, 128, 189");
+    brewer.push("rgb(204, 235, 197");
+    brewer.push("rgb(255, 237, 111");
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    // Reference frame classes.  Converts domain coordinates (usually genomic) to pixel coordinates
+
+    class ReferenceFrame {
+
+        constructor(genome, chr, start, end, bpPerPixel) {
+            this.genome = genome;
+            this.chr = chr;
+
+            this.start = start;
+
+            // TODO WARNING THIS IS NOT UPDATED !!!
+            this.end = end;
+
+            this.bpPerPixel = bpPerPixel;
+            this.id = domUtils.guid();
+        }
+
+        /**
+         * Extend this frame to accomodate the given locus.  Used th CircularView methods to merge 2 frames.
+         * @param locus
+         */
+        extend(locus) {
+            const newStart = Math.min(locus.start, this.start);
+            const newEnd = Math.max(locus.end, this.end);
+            const ratio = (newEnd - newStart) / (this.end - this.start);
+            this.start = newStart;
+            this.end = newEnd;
+            this.bpPerPixel *= ratio;
+        }
+
+        calculateEnd(pixels) {
+            return this.start + this.bpPerPixel * pixels
+        }
+
+        calculateBPP(end, pixels) {
+            return (end - this.start) / pixels
+        }
+
+        set(json) {
+            this.chr = json.chr;
+            this.start = json.start;
+            this.bpPerPixel = json.bpPerPixel;
+        }
+
+        toPixels(bp) {
+            return bp / this.bpPerPixel
+        }
+
+        toBP(pixels) {
+            return this.bpPerPixel * pixels
+        }
+
+        /**
+         * Shift frame by stated pixels.  Return true if view changed, false if not.
+         *
+         * @param pixels
+         * @param clamp -- if true "clamp" shift to prevent panning off edge of chromosome.  This is disabled if "show soft clipping" is on
+         * @param viewportWidth
+         */
+        shiftPixels(pixels, viewportWidth, clamp) {
+
+            const currentStart = this.start;
+            const deltaBP = pixels * this.bpPerPixel;
+
+            this.start += deltaBP;
+
+            if(clamp) {
+                this.clampStart(viewportWidth);
+            }
+
+            this.end = this.start + viewportWidth * this.bpPerPixel;
+
+            return currentStart !== this.start
+        }
+
+        clampStart(viewportWidth) {
+            // clamp left
+            const min = (this.genome.getChromosome(this.chr).bpStart || 0);
+            this.start = Math.max(min, this.start);
+
+            // clamp right
+            if (viewportWidth) {
+
+                const {bpLength} = this.genome.getChromosome(this.chr);
+                const maxStart = bpLength - (viewportWidth * this.bpPerPixel);
+
+                if (this.start > maxStart) {
+                    this.start = maxStart;
+                }
+            }
+        }
+
+        async zoomWithScaleFactor(browser, scaleFactor, viewportWidth, centerBPOrUndefined) {
+
+            const centerBP = undefined === centerBPOrUndefined ? (this.start + this.toBP(viewportWidth / 2.0)) : centerBPOrUndefined;
+
+            // save initial start and bpp
+            const {start, bpPerPixel} = this.start;
+
+            const {bpLength} = this.getChromosome();
+            const bppThreshold = scaleFactor < 1.0 ? browser.minimumBases() / viewportWidth : bpLength / viewportWidth;
+
+            // update bpp
+            if (scaleFactor < 1.0) {
+                this.bpPerPixel = Math.max(this.bpPerPixel * scaleFactor, bppThreshold);
+            } else {
+                this.bpPerPixel = Math.min(this.bpPerPixel * scaleFactor, bppThreshold);
+            }
+
+            // update start and end
+            const widthBP = this.bpPerPixel * viewportWidth;
+            this.start = centerBP - 0.5 * widthBP;
+            this.clampStart(viewportWidth);
+
+            this.end = this.start + widthBP;
+
+            const viewChanged = start !== this.start || bpPerPixel !== this.bpPerPixel;
+            if (viewChanged) {
+                await browser.updateViews(true);
+            }
+
+        }
+
+        getChromosome() {
+            return this.genome.getChromosome(this.chr)
+        }
+
+        getMultiLocusLabelBPLengthOnly(pixels) {
+            const margin = '&nbsp';
+            const ss = Math.floor(this.start) + 1;
+            const ee = Math.round(this.start + this.bpPerPixel * pixels);
+            return `${margin}${this.chr}${margin}${prettyBasePairNumber(ee - ss)}${margin}`
+        }
+
+        getMultiLocusLabelLocusOnly(pixels) {
+            const margin = '&nbsp';
+            const {chr, start, end } = this.getPresentationLocusComponents(pixels);
+            return `${margin}${chr}:${start}-${end}${margin}`
+        }
+
+        getMultiLocusLabel(pixels) {
+            const margin = '&nbsp';
+            const {chr, start, end } = this.getPresentationLocusComponents(pixels);
+            const ss = Math.floor(this.start) + 1;
+            const ee = Math.round(this.start + this.bpPerPixel * pixels);
+            return `${margin}${chr}:${start}-${end}${margin}${margin}(${prettyBasePairNumber(ee - ss)})${margin}`
+        }
+
+        getPresentationLocusComponents(pixels) {
+
+            if ('all' === this.chr) {
+                return {chr: this.chr}
+            } else {
+                const ss = numberFormatter$1(Math.floor(this.start) + 1);
+                const ee = numberFormatter$1(Math.round(this.start + this.bpPerPixel * pixels));
+
+                return {chr: this.chr, start: ss, end: ee}
+            }
+
+        }
+
+        getLocusString() {
+            if ('all' === this.chr) {
+                return 'all'
+            } else {
+                const ss = numberFormatter$1(Math.floor(this.start) + 1);
+                const ee = numberFormatter$1(Math.round(this.end));
+                return `${this.chr}:${ss}-${ee}`
+            }
+        }
+
+        description(blurb) {
+            console.log(` ${blurb || ''} referenceFrame - ${this.chr} bpp ${this.bpPerPixel.toFixed(3)} start ${numberFormatter$1(Math.round(this.start))} end ${numberFormatter$1(Math.round(this.end))} `);
+        }
+    }
+
+    function createReferenceFrameList(loci, genome, browserFlanking, minimumBases, viewportWidth, isSoftclipped) {
+
+        return loci.map(locus => {
+
+            // If a flanking region is defined, and the search object is a symbol ("gene") type, adjust start and end
+            if (browserFlanking && locus.gene) {
+                locus.start = Math.max(0, locus.start - browserFlanking);
+                locus.end += browserFlanking;
+            }
+
+            // Validate the range.  This potentionally modifies start & end of locus.
+            if(!isSoftclipped) {
+                const chromosome = genome.getChromosome(locus.chr);
+                validateGenomicExtent(chromosome.bpLength, locus, minimumBases);
+            }
+
+            const referenceFrame = new ReferenceFrame(genome,
+                locus.chr,
+                locus.start,
+                locus.end,
+                (locus.end - locus.start) / viewportWidth);
+
+            referenceFrame.locusSearchString = locus.locusSearchString;
+
+            // GTEX hack
+            if (locus.gene || locus.snp) {
+                referenceFrame.selection = new GtexSelection(locus.gene, locus.snp);
+            }
+
+            return referenceFrame
+        })
+    }
+
+    const DEFAULT_SEARCH_CONFIG = {
+        timeout: 5000,
+        type: "plain",   // Legacy plain text support -- deprecated
+        url: 'https://igv.org/genomes/locus.php?genome=$GENOME$&name=$FEATURE$',
+        coords: 0,
+        chromosomeField: "chromosome",
+        startField: "start",
+        endField: "end",
+        geneField: "gene",
+        snpField: "snp"
+    };
+
+    /**
+     * Return an object representing the locus of the given string.  Object is of the form
+     * {
+     *   chr,
+     *   start,
+     *   end,
+     *   locusSearchString,
+     *   gene,
+     *   snp
+     * }
+     * @param browser
+     * @param string
+     * @returns {Promise<*>}
+     */
+    async function search(browser, string) {
+
+        if (undefined === string || '' === string.trim()) {
+            return
+        }
+
+        if (string && string.trim().toLowerCase() === "all" || string === "*") {
+            string = "all";
+        }
+
+        const loci = string.split(' ');
+
+        let searchConfig = browser.searchConfig || DEFAULT_SEARCH_CONFIG;
+        let list = [];
+
+        const searchLocus = async (locus) => {
+            let locusObject = parseLocusString(browser, locus);
+
+            if (!locusObject) {
+                const feature = browser.genome.featureDB.get(locus.toUpperCase());
+                if (feature) {
+                    locusObject = {
+                        chr: feature.chr,
+                        start: feature.start,
+                        end: feature.end,
+                        gene: feature.name,
+                        locusSearchString: string
+                    };
+                }
+            }
+
+            if (!locusObject && (browser.config && false !== browser.config.search)) {
+                try {
+                    locusObject = await searchWebService(browser, locus, searchConfig);
+                } catch (error) {
+                    console.error(error);
+                    throw Error("Search service currently unavailable.")
+                }
+            }
+            return locusObject
+        };
+
+        for (let locus of loci) {
+            const locusObject = await searchLocus(locus);
+            if (locusObject) {
+                locusObject.locusSearchString = locus;
+                list.push(locusObject);
+            }
+        }
+
+        // If nothing is found, consider possibility that loci name itself has spaces
+        if (list.length === 0) {
+            const locusObject = await searchLocus(string);
+            if (locusObject) {
+                locusObject.locusSearchString = string;
+                list.push(locusObject);
+            }
+        }
+
+
+        return 0 === list.length ? undefined : list
+    }
+
+    function parseLocusString(browser, locus) {
+
+        // Check for tab delimited locus string
+        const tabTokens = locus.split('\t');
+        if (tabTokens.length >= 3) {
+            // Possibly a tab-delimited locus
+            try {
+                const chr = browser.genome.getChromosomeName(tabTokens[0]);
+                const start = parseInt(tabTokens[1].replace(/,/g, ''), 10) - 1;
+                const end = parseInt(tabTokens[2].replace(/,/g, ''), 10);
+                if (!isNaN(start) && !isNaN(end)) {
+                    return {chr, start, end}
+                }
+            } catch (e) {
+                // Not a tab delimited locus, apparently, but not really an error as that was a guess
+            }
+
+        }
+
+        const a = locus.split(':');
+        const chr = a[0];
+        if ('all' === chr && browser.genome.getChromosome(chr)) {
+            return {chr, start: 0, end: browser.genome.getChromosome(chr).bpLength}
+
+        } else if (undefined === browser.genome.getChromosome(chr)) {
+            return undefined
+
+        } else {
+            const queryChr = browser.genome.getChromosomeName(chr);
+            const extent = {
+                chr: queryChr,
+                start: 0,
+                end: browser.genome.getChromosome(chr).bpLength
+            };
+
+            if (a.length > 1) {
+
+                let b = a[1].split('-');
+                if (b.length > 2) {
+                    // Allow for negative coordinates, which is possible if showing alignment soft clips
+                    if (a[1].startsWith('-')) {
+                        const i = a[1].indexOf('-', 1);
+                        if (i > 0) {
+                            const t1 = a[1].substring(0, i);
+                            const t2 = a[1].substring(i + 1);
+                            b = [t1, t2];
+                        }
+                    } else {
+                        return undefined
+                    }
+
+                }
+
+                let numeric;
+                numeric = b[0].replace(/,/g, '');
+                if (isNaN(numeric)) {
+                    return undefined
+                }
+
+                extent.start = parseInt(numeric, 10) - 1;
+                extent.end = extent.start + 1;
+
+                if (1 === b.length) {
+                    // Don't clamp coordinates if single coordinate is supplied.
+                    extent.start -= 20;
+                    extent.end += 20;
+                }
+
+                if (2 === b.length) {
+                    numeric = b[1].replace(/,/g, '');
+                    if (isNaN(numeric)) {
+                        return undefined
+                    } else {
+                        extent.end = parseInt(numeric, 10);
+                    }
+
+                    // Allow negative coordinates only if browser is softclipped, i.e. there is at least alignment track with softclipping on
+                    if (extent.start < 0 && !browser.isSoftclipped()) {
+                        const delta = -extent.start;
+                        extent.start += delta;
+                        extent.end += delta;
+                    }
+                }
+            }
+
+            return extent
+        }
+    }
+
+    async function searchWebService(browser, locus, searchConfig) {
+
+        let path = searchConfig.url.replace("$FEATURE$", locus.toUpperCase());
+        if (path.indexOf("$GENOME$") > -1) {
+            path = path.replace("$GENOME$", (browser.genome.id ? browser.genome.id : "hg19"));
+        }
+        const options = searchConfig.timeout ? {timeout: searchConfig.timeout} : undefined;
+        const result = await igvxhr.loadString(path, options);
+
+        const locusObject = processSearchResult(browser, result, searchConfig);
+        if (locusObject) {
+            locusObject.locusSearchString = locus;
+        }
+        return locusObject
+    }
+
+    function processSearchResult(browser, result, searchConfig) {
+
+        let results;
+
+        if ('plain' === searchConfig.type) {
+            results = parseSearchResults(browser, result);
+        } else {
+            results = JSON.parse(result);
+        }
+
+        if (searchConfig.resultsField) {
+            results = results[searchConfig.resultsField];
+        }
+
+        if (!results || 0 === results.length) {
+            return undefined
+
+        } else {
+
+            const chromosomeField = searchConfig.chromosomeField || "chromosome";
+            const startField = searchConfig.startField || "start";
+            const endField = searchConfig.endField || "end";
+            const coords = searchConfig.coords || 1;
+
+
+            let result;
+            if (Array.isArray(results)) {
+                // Ignoring all but first result for now
+                // TODO -- present all and let user select if results.length > 1
+                result = results[0];
+            } else {
+                // When processing search results from Ensembl REST API
+                // Example: https://rest.ensembl.org/lookup/symbol/macaca_fascicularis/BRCA2?content-type=application/json
+                result = results;
+            }
+
+            if (!(result.hasOwnProperty(chromosomeField) && (result.hasOwnProperty(startField)))) {
+                console.error("Search service results must include chromosome and start fields: " + result);
+            }
+
+            const chrResult = result[chromosomeField];
+            const chromosome = browser.genome.getChromosome(chrResult);
+            if (!chromosome) {
+                return undefined
+            }
+            const chr = chromosome.name;
+
+            let start = result[startField] - coords;
+            let end = result[endField];
+            if (undefined === end) {
+                end = start + 1;
+            }
+
+            const locusObject = {chr, start, end};
+
+            // Some GTEX hacks
+            const type = result.type ? result.type : "gene";
+            if (searchConfig.geneField && type === "gene") {
+                locusObject.gene = result[searchConfig.geneField];
+            }
+            if (searchConfig.snpField && type === "snp") {
+                locusObject.snp = result[searchConfig.snpField];
+            }
+
+            return locusObject
+        }
+    }
+
+    /**
+     * Parse the igv line-oriented (non json) search results.
+     * Example
+     *    EGFR    chr7:55,086,724-55,275,031    refseq
+     *
+     */
+    function parseSearchResults(browser, data) {
+
+        const linesTrimmed = [];
+        const results = [];
+        const lines = splitLines$5(data);
+
+        lines.forEach(function (item) {
+            if ("" === item) ; else {
+                linesTrimmed.push(item);
+            }
+        });
+
+        linesTrimmed.forEach(function (line) {
+
+            var tokens = line.split("\t"),
+                source,
+                locusTokens,
+                rangeTokens,
+                obj;
+
+            if (tokens.length >= 3) {
+
+                locusTokens = tokens[1].split(":");
+                rangeTokens = locusTokens[1].split("-");
+                source = tokens[2].trim();
+
+                obj =
+                    {
+                        gene: tokens[0],
+                        chromosome: browser.genome.getChromosomeName(locusTokens[0].trim()),
+                        start: parseInt(rangeTokens[0].replace(/,/g, '')),
+                        end: parseInt(rangeTokens[1].replace(/,/g, '')),
+                        type: ("gtex" === source ? "snp" : "gene")
+                    };
+
+                results.push(obj);
+
+            }
+
+        });
+
+        return results
+
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class NavbarManager {
+
+        constructor(browser) {
+            this.browser = browser;
+        }
+
+        navbarDidResize(width) {
+            this.updateNavbar(this.createResponsiveClassSchedule(width));
+        }
+
+        updateNavbar(responsiveClassSchedule) {
+
+            this.browser.$toggle_button_container.removeClass();
+            this.browser.$toggle_button_container.addClass(responsiveClassSchedule.$toggle_button_container);
+
+            $$1(this.browser.zoomWidget.zoomContainer).removeClass();
+            $$1(this.browser.zoomWidget.zoomContainer).addClass(responsiveClassSchedule.zoomContainer);
+        }
+
+        createResponsiveClassSchedule(navbarWidth) {
+
+            let candidates = {};
+
+            const isWGV = this.browser.isMultiLocusWholeGenomeView() ||
+                (this.browser.referenceFrameList &&
+                    GenomeUtils.isWholeGenomeView(this.browser.referenceFrameList[0].chr));
+
+
+            if (isWGV) {
+                this.browser.windowSizePanel.hide();
+            } else {
+                this.browser.windowSizePanel.show();
+            }
+
+            if (navbarWidth > 990) {
+                candidates.$toggle_button_container = 'igv-navbar-toggle-button-container';
+                candidates.zoomContainer = 'igv-zoom-widget';
+            } else if (navbarWidth > 860) {
+                candidates.$toggle_button_container = 'igv-navbar-toggle-button-container';
+                candidates.zoomContainer = 'igv-zoom-widget-900';
+            } else if (navbarWidth > 540) {
+                candidates.$toggle_button_container = 'igv-navbar-toggle-button-container-750';
+                candidates.zoomContainer = 'igv-zoom-widget-900';
+            } else {
+                candidates.$toggle_button_container = 'igv-navbar-toggle-button-container-750';
+                candidates.zoomContainer = 'igv-zoom-widget-900';
+                this.browser.windowSizePanel.hide();
+            }
+
+            if (isWGV) {
+                candidates['zoomContainer'] = 'igv-zoom-widget-hidden';
+            }
+
+            return candidates
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016-2017 The Regents of the University of California
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const ChromosomeSelectWidget = function (browser, parent) {
+
+        this.container = domUtils.div({class: 'igv-chromosome-select-widget-container'});
+        parent.appendChild(this.container);
+
+        this.select = document.createElement('select');
+        this.select.setAttribute('name', 'chromosome-select-widget');
+        this.container.appendChild(this.select);
+
+        this.select.addEventListener('change', () => {
+            this.select.blur();
+            if (this.select.value !== '') {
+                browser.search(this.select.value);
+            }
+        });
+
+        this.showAllChromosomes = browser.config.showAllChromosomes !== false;   // i.e. default to true
+
+    };
+
+    ChromosomeSelectWidget.prototype.show = function () {
+        this.container.style.display = 'flex';
+    };
+
+    ChromosomeSelectWidget.prototype.hide = function () {
+        this.container.style.display = 'none';
+    };
+
+    ChromosomeSelectWidget.prototype.update = function (genome) {
+
+        const list = this.showAllChromosomes ? genome.chromosomeNames.slice() : genome.wgChromosomeNames.slice();
+        // console.log(`${ this.showAllChromosomes ? 'Do' : 'Do not'} show all chromosomes. List ${ list }`)
+
+        if (genome.showWholeGenomeView()) {
+            list.unshift('all');
+            list.unshift('');
+        }
+
+        this.select.innerHTML = '';
+
+        for (let name of list) {
+            const option = document.createElement('option');
+            option.setAttribute('value', name);
+            option.innerText = name;
+            this.select.appendChild(option);
+        }
+
+    };
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class WindowSizePanel {
+        constructor(parent, browser) {
+
+            this.container = domUtils.div({class: 'igv-windowsize-panel-container'});
+            parent.appendChild(this.container);
+
+            browser.on('locuschange', (referenceFrameList) => {
+                this.updatePanel(referenceFrameList);
+            });
+
+            this.browser = browser;
+
+        }
+
+        show() {
+            this.container.style.display = 'block';
+        }
+
+        hide() {
+            this.container.style.display = 'none';
+        }
+
+        updatePanel(referenceFrameList) {
+            const width = this.browser.calculateViewportWidth(this.browser.referenceFrameList.length);
+            this.container.innerText = 1 === referenceFrameList.length ? prettyBasePairNumber(Math.round(width * referenceFrameList[0].bpPerPixel)) : '';
+        }
+    }
+
+    class CursorGuide {
+
+        constructor(columnContainer, browser) {
+            this.browser = browser;
+            this.columnContainer = columnContainer;
+
+            this.horizontalGuide = domUtils.div({class: 'igv-cursor-guide-horizontal'});
+            columnContainer.appendChild(this.horizontalGuide);
+
+            this.verticalGuide = domUtils.div({class: 'igv-cursor-guide-vertical'});
+            columnContainer.appendChild(this.verticalGuide);
+
+            this.addMouseHandler(browser);
+
+            this.setVisibility(browser.config.showCursorGuide);
+
+        }
+
+        addMouseHandler(browser) {
+
+            this.boundMouseMoveHandler = mouseMoveHandler.bind(this);
+            this.columnContainer.addEventListener('mousemove', this.boundMouseMoveHandler);
+
+            function mouseMoveHandler(event) {
+
+                const {x, y} = domUtils.translateMouseCoordinates(event, this.columnContainer);
+                this.horizontalGuide.style.top = `${y}px`;
+
+                const target = document.elementFromPoint(event.clientX, event.clientY);
+
+                const viewport = findAncestorOfClass(target, 'igv-viewport');
+
+                if (viewport && browser.getRulerTrackView()) {
+
+                    this.verticalGuide.style.left = `${x}px`;
+
+                    const columns = browser.root.querySelectorAll('.igv-column');
+                    let index = undefined;
+                    const viewportParent = viewport.parentElement;
+                    for (let i = 0; i < columns.length; i++) {
+                        if (undefined === index && viewportParent === columns[i]) {
+                            index = i;
+                        }
+                    }
+
+                    const rulerViewport = browser.getRulerTrackView().viewports[index];
+                    const result = rulerViewport.mouseMove(event);
+
+                    if (result) {
+
+                        const {start, bp, end} = result;
+                        const interpolant = (bp - start) / (end - start);
+
+                        if (this.customMouseHandler) {
+                            this.customMouseHandler({start, bp, end, interpolant});
+                        }
+                    }
+                }
+
+            }
+        }
+
+        removeMouseHandler() {
+            this.columnContainer.removeEventListener('mousemove', this.boundMouseMoveHandler);
+        }
+
+        setVisibility(showCursorGuide) {
+            if (true === showCursorGuide) {
+                this.show();
+            } else {
+                this.hide();
+            }
+        }
+
+        show() {
+            this.verticalGuide.style.display = 'block';
+            this.horizontalGuide.style.display = 'block';
+
+        }
+
+        hide() {
+
+            this.verticalGuide.style.display = 'none';
+            this.horizontalGuide.style.display = 'none';
+
+            if (this.browser.getRulerTrackView()) {
+                for (let viewport of this.browser.getRulerTrackView().viewports) {
+                    viewport.$tooltip.hide();
+                }
+            }
+
+        }
+
+    }
+
+    /**
+     * Walk up the tree until a parent is found with the given classname.  If no ancestor is found return undefined.
+     * @param target
+     * @param classname
+     * @returns {*}
+     */
+    function findAncestorOfClass(target, classname) {
+
+        while (target.parentElement) {
+            if (target.parentElement.classList.contains(classname)) {
+                return target.parentElement
+            } else {
+                target = target.parentElement;
+            }
+        }
+        return undefined
+
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016 University of California San Diego
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class CursorGuideButton {
+
+        constructor(browser, parent) {
+
+            this.browser = browser;
+
+            this.button = domUtils.div({class: 'igv-navbar-button'});
+            parent.appendChild(this.button);
+
+            this.button.textContent = 'cursor guide';
+
+            this.button.addEventListener('click', () => {
+                browser.cursorGuideVisible = !browser.cursorGuideVisible;
+                browser.setCursorGuideVisibility(browser.cursorGuideVisible);
+                this.setButtonState(browser.cursorGuideVisible);
+            });
+
+            this.setButtonState(browser.cursorGuideVisible);
+
+            if (browser.config.showCursorTrackingGuideButton) {
+                this.show();
+            } else {
+                this.hide();
+            }
+
+        }
+
+        setButtonState(cursorGuideVisible) {
+            if (true === cursorGuideVisible) {
+                this.button.classList.add('igv-navbar-button-clicked');
+            } else {
+                this.button.classList.remove('igv-navbar-button-clicked');
+            }
+        }
+
+        show() {
+            this.button.style.display = 'block';
+            this.setButtonState(this.browser.cursorGuideVisible);
+        }
+
+        hide() {
+            this.button.style.display = 'none';
+        }
+    }
+
+    class CenterLineButton {
+
+        constructor(browser, parent) {
+
+            this.browser = browser;
+
+            this.button = domUtils.div({class: 'igv-navbar-button'});
+            parent.appendChild(this.button);
+
+            this.button.textContent = 'center line';
+
+            this.button.addEventListener('click', () => {
+                browser.isCenterLineVisible = !browser.isCenterLineVisible;
+                browser.setCenterLineVisibility(browser.isCenterLineVisible);
+                this.setButtonState(browser.isCenterLineVisible);
+            });
+
+            this.setButtonState(browser.isCenterLineVisible);
+
+            if (browser.config.showCenterGuideButton) {
+                this.show();
+            } else {
+                this.hide();
+            }
+        }
+
+        setButtonState(isCenterLineVisible) {
+            if (true === isCenterLineVisible) {
+                this.button.classList.add('igv-navbar-button-clicked');
+            } else {
+                this.button.classList.remove('igv-navbar-button-clicked');
+            }
+        }
+
+        show() {
+            this.isVisible = true;
+            this.button.style.display = 'block';
+            this.setButtonState(this.browser.isCenterLineVisible);
+        }
+
+        hide() {
+            this.isVisible = false;
+            this.button.style.display = 'none';
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016 University of California San Diego
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class TrackLabelControl {
+
+        constructor(parent, browser) {
+
+            this.button = domUtils.div({class: 'igv-navbar-button'});
+            parent.appendChild(this.button);
+            this.button.textContent = 'track labels';
+
+            this.button.addEventListener('click', () => {
+                browser.trackLabelsVisible = !browser.trackLabelsVisible;
+                this.setState(browser.trackLabelsVisible);
+                browser.setTrackLabelVisibility(browser.trackLabelsVisible);
+            });
+
+            this.browser = browser;
+
+            this.setVisibility(browser.config.showTrackLabelButton);
+
+            this.setState(browser.trackLabelsVisible);
+        }
+
+        setVisibility(showTrackLabelButton) {
+            if (true === showTrackLabelButton) {
+                this.show();
+            } else {
+                this.hide();
+            }
+        }
+
+        setState(trackLabelsVisible) {
+            if (true === trackLabelsVisible) {
+                this.button.classList.add('igv-navbar-button-clicked');
+            } else {
+                this.button.classList.remove('igv-navbar-button-clicked');
+            }
+        }
+
+        show() {
+            this.button.style.display = 'block';
+            this.setState(this.browser.trackLabelsVisible);
+        }
+
+        hide() {
+            this.button.style.display = 'none';
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016 University of California San Diego
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class SampleNameControl {
+
+        constructor(parent, browser) {
+
+            this.button = domUtils.div({class: 'igv-navbar-button'});
+            parent.appendChild(this.button);
+
+            this.button.innerText = 'Sample Names';
+
+            this.setState(browser.showSampleNames);
+
+            this.setVisibility(browser.showSampleNameButton);
+
+            this.button.addEventListener('click', () => {
+
+                browser.showSampleNames = !browser.showSampleNames;
+
+                this.setState(browser.showSampleNames);
+
+                for (let {sampleNameViewport} of browser.trackViews) {
+                    if (false === browser.showSampleNames) {
+                        sampleNameViewport.hide();
+                    } else {
+                        sampleNameViewport.show();
+                    }
+                }
+
+                browser.layoutChange();
+
+
+            });
+
+        }
+
+        setVisibility(showSampleNameButton) {
+
+            if (true === showSampleNameButton) {
+                this.show();
+            } else {
+                this.hide();
+            }
+        }
+
+        setState(showSampleNames) {
+            if (true === showSampleNames) {
+                this.button.classList.add('igv-navbar-button-clicked');
+            } else {
+                this.button.classList.remove('igv-navbar-button-clicked');
+            }
+        }
+
+        hide() {
+            this.button.style.display = 'none';
+        }
+
+        show() {
+            this.button.style.display = 'block';
+        }
+
+    }
+
+    const sliderMin = 0;
+    let sliderMax = 23;
+    let sliderValueRaw = 0;
+
+    const ZoomWidget = function (browser, parent) {
+
+        this.browser = browser;
+
+        this.zoomContainer = domUtils.div({class: 'igv-zoom-widget'});
+        parent.appendChild(this.zoomContainer);
+
+        // zoom out
+        this.zoomOutButton = domUtils.div();
+        this.zoomContainer.appendChild(this.zoomOutButton);
+        this.zoomOutButton.appendChild(icons$1.createIcon('minus-circle'));
+        this.zoomOutButton.addEventListener('click', () => {
+            // browser.zoomWithScaleFactor(2.0)
+            browser.zoomOut();
+        });
+
+        // Range slider
+        const el = domUtils.div();
+        this.zoomContainer.appendChild(el);
+        this.slider = document.createElement('input');
+        this.slider.type = 'range';
+
+        this.slider.min = `${sliderMin}`;
+        this.slider.max = `${sliderMax}`;
+
+        el.appendChild(this.slider);
+
+        this.slider.addEventListener('change', e => {
+
+            e.preventDefault();
+            e.stopPropagation();
+
+            const referenceFrame = browser.referenceFrameList[0];
+            const {bpLength} = referenceFrame.genome.getChromosome(referenceFrame.chr);
+            const {end, start} = referenceFrame;
+
+            const extent = end - start;
+
+            // bpLength/(end - start)
+            const scaleFactor = Math.pow(2, e.target.valueAsNumber);
+
+            // (end - start) = bpLength/scaleFactor
+            const zoomedExtent = bpLength / scaleFactor;
+
+            // console.log(`zoom-widget - slider ${ e.target.value } scaleFactor ${ scaleFactor } extent-zoomed ${ StringUtils.numberFormatter(Math.round(zoomedExtent)) }`)
+
+            browser.zoomWithScaleFactor(zoomedExtent / extent);
+
+        });
+
+        // zoom in
+        this.zoomInButton = domUtils.div();
+        this.zoomContainer.appendChild(this.zoomInButton);
+        this.zoomInButton.appendChild(icons$1.createIcon('plus-circle'));
+        this.zoomInButton.addEventListener('click', () => {
+            // browser.zoomWithScaleFactor(0.5)
+            browser.zoomIn();
+        });
+
+        browser.on('locuschange', (referenceFrameList) => {
+
+            if (this.browser.isMultiLocusMode()) {
+                this.disable();
+            } else {
+                this.enable();
+                this.update(referenceFrameList);
+            }
+
+        });
+
+    };
+
+    ZoomWidget.prototype.update = function (referenceFrameList) {
+
+        const referenceFrame = referenceFrameList[0];
+        const {bpLength} = referenceFrame.genome.getChromosome(referenceFrame.chr);
+        const {start, end} = referenceFrame;
+
+        sliderMax = Math.ceil(Math.log2(bpLength / this.browser.minimumBases()));
+
+        this.slider.max = `${sliderMax}`;
+
+        const scaleFactor = bpLength / (end - start);
+        sliderValueRaw = Math.log2(scaleFactor);
+        this.slider.value = `${Math.round(sliderValueRaw)}`;
+
+        // referenceFrame.description('zoom.update')
+
+        // console.log(`${ Date.now() } update - slider ${ this.slider.value } scaleFactor ${ Math.round(scaleFactor) } extent ${ StringUtils.numberFormatter(Math.round(extent)) }`)
+
+        // console.log(`update - sliderMin ${ sliderMin } sliderValue ${ this.slider.value } sliderMax ${ sliderMax } scaleFactor ${ scaleFactor.toFixed(3) } derived-scaleFactor ${ derivedScalefactor.toFixed(3) }`)
+
+    };
+
+    ZoomWidget.prototype.enable = function () {
+
+        // this.zoomInButton.style.color = appleCrayonPalette[ 'steel' ];
+        // this.zoomInButton.style.pointerEvents = 'auto';
+        //
+        // this.zoomOutButton.style.color = appleCrayonPalette[ 'steel' ];
+        // this.zoomOutButton.style.pointerEvents = 'auto';
+
+        this.slider.disabled = false;
+    };
+
+    ZoomWidget.prototype.disable = function () {
+
+        // this.zoomInButton.style.color = appleCrayonPalette[ 'silver' ];
+        // this.zoomInButton.style.pointerEvents = 'none';
+        //
+        // this.zoomOutButton.style.color = appleCrayonPalette[ 'silver' ];
+        // this.zoomOutButton.style.pointerEvents = 'none';
+
+        this.slider.disabled = true;
+    };
+
+    ZoomWidget.prototype.hide = function () {
+        this.zoomContainer.style.display = 'none';
+    };
+
+    ZoomWidget.prototype.show = function () {
+        this.zoomContainer.style.display = 'block';
+    };
+
+    ZoomWidget.prototype.hideSlider = function () {
+        this.slider.style.display = 'none';
+    };
+
+    ZoomWidget.prototype.showSlider = function () {
+        this.slider.style.display = 'block';
+    };
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016 University of California San Diego
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const SVGSaveControl = function (parent, browser) {
+        const button = domUtils.div({class: 'igv-navbar-button'});
+        parent.append(button);
+
+        button.textContent = 'Save SVG';
+        button.addEventListener('click', () => browser.saveSVGtoFile({}));
+    };
+
+    const viewportColumnManager =
+        {
+            createColumns: (columnContainer, count) => {
+
+                for (let i = 0; i < count; i++) {
+                    if (0 === i) {
+                        createColumn(columnContainer, 'igv-column');
+                    } else {
+                        columnContainer.appendChild(domUtils.div({class: 'igv-column-shim'}));
+                        createColumn(columnContainer, 'igv-column');
+                    }
+                }
+
+            },
+
+            removeColumnAtIndex: (i, column) => {
+                const shim = 0 === i ? column.nextElementSibling : column.previousElementSibling;
+                column.remove();
+                shim.remove();
+            },
+
+            insertAfter: referenceElement => {
+
+                const shim = domUtils.div({class: 'igv-column-shim'});
+                insertElementAfter(shim, referenceElement);
+
+                const column = domUtils.div({class: 'igv-column'});
+                insertElementAfter(column, shim);
+
+                return column
+            },
+
+            insertBefore: (referenceElement, count) => {
+
+                for (let i = 0; i < count; i++) {
+
+                    const column = domUtils.div({class: 'igv-column'});
+                    insertElementBefore(column, referenceElement);
+
+                    if (count > 1 && i > 0) {
+                        const columnShim = domUtils.div({class: 'igv-column-shim'});
+                        insertElementBefore(columnShim, column);
+                    }
+
+                }
+
+            },
+
+            indexOfColumn: (columnContainer, column) => {
+
+                const allColumns = columnContainer.querySelectorAll('.igv-column');
+
+                for (let i = 0; i < allColumns.length; i++) {
+                    const c = allColumns[ i ];
+                    if (c === column) {
+                        return i
+                    }
+                }
+
+                return undefined
+            },
+        };
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016 University of California San Diego
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class ViewportCenterLine {
+
+        constructor(browser, referenceFrame, column) {
+
+            this.browser = browser;
+            this.referenceFrame = referenceFrame;
+            this.column = column;
+
+            this.container = domUtils.div({class: 'igv-center-line'});
+            column.appendChild(this.container);
+
+            if (browser.isCenterLineVisible) {
+                this.show();
+            } else {
+                this.hide();
+            }
+        }
+
+        repaint() {
+
+            if (this.referenceFrame) {
+
+                const ppb = 1.0 / this.referenceFrame.bpPerPixel;
+                if (ppb > 1) {
+                    const width = Math.floor(this.referenceFrame.toPixels(1));
+                    this.container.style.width = `${width}px`;
+                    this.container.classList.remove('igv-center-line-thin');
+                    this.container.classList.add('igv-center-line-wide');
+                } else {
+                    this.container.style.width = '1px';
+                    this.container.classList.remove('igv-center-line-wide');
+                    this.container.classList.add('igv-center-line-thin');
+                }
+            }
+        }
+
+        show() {
+            this.isVisible = true;
+            this.container.style.display = 'block';
+            this.repaint();
+        }
+
+        hide() {
+            this.isVisible = false;
+            this.container.style.display = 'none';
+        }
+
+        resize() {
+            this.repaint();
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const numberFormatter = numberFormatter$1;
+
+    class RulerTrack {
+        constructor(browser) {
+
+            this.browser = browser;
+            this.height = 40;
+            this.name = "";
+            this.id = "ruler";
+            this.disableButtons = true;
+            this.ignoreTrackMenu = true;
+            this.order = Number.MIN_SAFE_INTEGER * 1e-2;
+            this.removable = false;
+            this.type = 'ruler';
+        }
+
+        async getFeatures(chr, start, end) {
+            return []
+        };
+
+        computePixelHeight(ignore) {
+            return this.height
+        };
+
+        draw({context, referenceFrame, pixelWidth, pixelHeight, bpPerPixel, bpStart}) {
+
+            if (GenomeUtils.isWholeGenomeView(referenceFrame.chr)) {
+                this.drawWholeGenome({context, pixelWidth, pixelHeight, bpPerPixel});
+            } else {
+                this.doDraw({context, referenceFrame, pixelWidth, pixelHeight, bpStart});
+            }
+        }
+
+        drawWholeGenome({context, pixelWidth, pixelHeight, bpPerPixel}) {
+
+            context.save();
+
+            IGVGraphics.fillRect(context, 0, 0, pixelWidth, pixelHeight, {'fillStyle': 'white'});
+
+            for (let name of this.browser.genome.wgChromosomeNames) {
+
+                let xBP = this.browser.genome.getCumulativeOffset(name);
+                let wBP = this.browser.genome.getChromosome(name).bpLength;
+
+                let x = Math.round(xBP / bpPerPixel);
+                let w = Math.round(wBP / bpPerPixel);
+
+                this.renderChromosomeRect(context, x, 0, w, pixelHeight, name);
+            }
+
+            context.restore();
+
+        }
+
+        doDraw({context, referenceFrame, pixelWidth, pixelHeight, bpStart}) {
+
+            context.clearRect(0, 0, pixelWidth, pixelHeight);
+
+            const tickHeight = 6;
+            const shim = 2;
+
+            const bpLength = Math.floor(referenceFrame.toBP(pixelWidth));
+            const tick = findSpacing(bpLength, context.isSVG);
+
+            let nTick = Math.floor(bpStart / tick.majorTick) - 1;
+
+            const {tickDelta, labelLength} = calculateDeltas(context, referenceFrame, bpStart, nTick, tick);
+
+            this.browser.referenceFrameList.indexOf(referenceFrame);
+            // console.log(`ruler(${ index }) label-length ${ labelLength > tickDelta ? 'clobbers' : 'less than' } tick-delta ${ StringUtils.numberFormatter(tickDelta)} `)
+
+            let xTick;
+            let bp;
+            let accumulatedTickDelta = tickDelta;
+            const labelLengthShim = 0.25 * labelLength;
+            do {
+
+                bp = Math.floor(nTick * tick.majorTick);
+                const rulerLabel = `${numberFormatter$1(Math.floor(bp / tick.unitMultiplier))} ${tick.majorUnit}`;
+
+                xTick = Math.round(referenceFrame.toPixels((bp - 1) - bpStart + 0.5));
+                const xLabel = Math.round(xTick - context.measureText(rulerLabel).width / 2);
+
+                if (xLabel > 0 && (labelLengthShim + labelLength) <= accumulatedTickDelta) {
+                    IGVGraphics.fillText(context, rulerLabel, xLabel, this.height - (tickHeight / 0.75));
+                    accumulatedTickDelta = 0;
+                }
+
+                if (xTick > 0) {
+                    IGVGraphics.strokeLine(context, xTick, this.height - tickHeight, xTick, this.height - shim);
+                }
+
+                bp = Math.floor((1 + nTick) * tick.majorTick);
+                let pixel = Math.round(referenceFrame.toPixels((bp - 1) - bpStart + 0.5));
+                let delta = (pixel - xTick) / 2;
+                let xx = xTick + delta;
+                if (xx > 0) {
+                    IGVGraphics.strokeLine(context, xx, this.height - tickHeight, xx, this.height - shim);
+                }
+
+                ++nTick;
+                accumulatedTickDelta += tickDelta;
+
+            } while (xTick < pixelWidth)
+
+            IGVGraphics.strokeLine(context, 0, this.height - shim, pixelWidth, this.height - shim);
+
+        }
+
+        renderChromosomeRect(ctx, x, y, w, h, name) {
+
+            ctx.textAlign = 'center';
+            ctx.textBaseline = 'middle';
+            ctx.font = '12px sans-serif';
+
+            IGVGraphics.strokeLine(ctx, x + w, y, x + w, y + h, {strokeStyle: IGVColor.greyScale(191)});
+
+            const shortName = (name.startsWith("chr")) ? name.substring(3) : name;
+
+            if (w > ctx.measureText(shortName).width) {
+                IGVGraphics.fillText(ctx, shortName, (x + (w / 2)), (y + (h / 2)), {fillStyle: IGVColor.greyScale(68)});
+            }
+        }
+
+        get supportsWholeGenome() {
+            return true
+        };
+
+        dispose() {
+            // do stuff
+        }
+    }
+
+    function findSpacing(bpLength, isSVG) {
+
+        if (bpLength < 10) {
+            return new Tick(1, 'bp', 1)
+        }
+
+        const nZeroes = Math.floor(Math.log10(bpLength));
+
+        let majorUnit = 'bp';
+        let unitMultiplier = 1;
+
+        if (nZeroes > 9) {
+            majorUnit = 'gb';
+            unitMultiplier = 1e9;
+        } else if (nZeroes > 6) {
+            majorUnit = 'mb';
+            unitMultiplier = 1e6;
+        } else if (nZeroes > 3) {
+            majorUnit = 'kb';
+            unitMultiplier = 1e3;
+        }
+
+        const denom = Math.pow(10, nZeroes - 1);
+        const nMajorTicks = bpLength / denom;
+
+        // const threshold = 25
+        const threshold = 3 * 25;
+
+        const belowThresholdTick = Math.pow(10, nZeroes - 1);
+        const aboveThresholdTick = Math.pow(10, nZeroes) / 2;
+
+        // console.log(`zeros ${ nZeroes } tick-threshold ${ threshold } ticks ${ nMajorTicks } belowTick ${ StringUtils.numberFormatter(belowThresholdTick) } aboveTick ${ StringUtils.numberFormatter(aboveThresholdTick) }`)
+
+        const majorTick = (nMajorTicks < threshold && isSVG !== true) ? belowThresholdTick : aboveThresholdTick;
+
+        return new Tick(majorTick, majorUnit, unitMultiplier)
+    }
+
+    function calculateDeltas(context, referenceFrame, bpStart, nTick, tick) {
+
+        const tickDelta = getX(referenceFrame, getBP(1 + nTick, tick), bpStart) - getX(referenceFrame, getBP(nTick, tick), bpStart);
+
+        const label = `${numberFormatter$1(Math.floor(getBP(nTick, tick) / tick.unitMultiplier))} ${tick.majorUnit}`;
+        const labelLength = Math.floor(context.measureText(label).width);
+
+        return {tickDelta, labelLength}
+
+        function getBP(nTick, tick) {
+            return Math.floor(nTick * tick.majorTick)
+        }
+
+        function getX(referenceFrame, bp, bpStart) {
+            return Math.round(referenceFrame.toPixels((bp - 1) - bpStart + 0.5))
+        }
+    }
+
+    class Tick {
+
+        constructor(majorTick, majorUnit, unitMultiplier) {
+            this.majorTick = majorTick;
+            this.minorTick = majorTick / 10.0;
+            this.majorUnit = majorUnit;
+            this.unitMultiplier = unitMultiplier;
+        }
+
+        description(blurb) {
+            console.log((blurb || '') + ' tick ' + numberFormatter(this.majorTick) + ' label width ' + numberFormatter(this.labelWidthBP) + ' multiplier ' + this.unitMultiplier);
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016 University of California San Diego
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    const CircularViewControl = function (parent, browser) {
+
+        this.button = domUtils.div({class: 'igv-navbar-button'});
+        parent.appendChild(this.button);
+        this.button.textContent = 'circular view';
+
+        this.button.addEventListener('click', () => {
+            browser.circularViewVisible = !browser.circularViewVisible;
+            //this.setState(browser.circularViewVisible)
+        });
+
+        this.browser = browser;
+
+        this.setVisibility(browser.config.showCircularViewButton);
+
+        this.setState(browser.circularViewVisible);
+
+    };
+
+    CircularViewControl.prototype.setVisibility = function (showCircularViewButton) {
+        if (true === showCircularViewButton) {
+            this.show();
+        } else {
+            this.hide();
+        }
+    };
+
+    CircularViewControl.prototype.setState = function (circularViewVisible) {
+        if (true === circularViewVisible) {
+            this.button.classList.add('igv-navbar-button-clicked');
+        } else {
+            this.button.classList.remove('igv-navbar-button-clicked');
+        }
+    };
+
+    CircularViewControl.prototype.show = function () {
+        this.button.style.display = 'block';
+        this.setState(this.browser.circularViewVisible);
+    };
+
+    CircularViewControl.prototype.hide = function () {
+        this.button.style.display = 'none';
+    };
+
+    /**
+     * User supplied button for the navbar
+     */
+
+    const CustomButton = function (parent, browser, b) {
+
+        const button = domUtils.div({class: 'igv-navbar-button'});
+        parent.append(button);
+        button.textContent = b.label;
+        button.addEventListener('click', () => b.callback(browser));
+    };
+
+    class ROIManager {
+
+        constructor(browser, roiMenu, roiTable, top, roiSets) {
+
+            this.browser = browser;
+            this.roiMenu = roiMenu;
+            this.roiTable = roiTable;
+            this.top = top;
+            this.roiSets = roiSets || [];
+            this.boundLocusChangeHandler = locusChangeHandler.bind(this);
+            browser.on('locuschange', this.boundLocusChangeHandler);
+
+        }
+
+        async initialize() {
+
+            if (this.roiSets.length > 0) {
+                this.browser.showROITableButton = true;
+                this.browser.roiTableControl.setVisibility(this.browser.showROITableButton);
+            }
+
+            const promises = this.roiSets.map(roiSet => this.renderROISet({
+                browser: this.browser,
+                pixelTop: this.top,
+                roiSet
+            }));
+
+            if (promises.length > 0) {
+                await Promise.all(promises);
+            }
+
+            const records = await this.getTableRecords();
+            this.roiTable.renderTable(records);
+
+        }
+
+        async loadROI(config, genome) {
+
+            const configs = Array.isArray(config) ? config : [config];
+
+            for (let c of configs) {
+                this.roiSets.push(new ROISet(c, genome));
+            }
+
+            await this.initialize();
+
+        }
+
+        clearROIs() {
+
+            this.roiTable.clearTable();
+
+            const elements = this.browser.columnContainer.querySelectorAll('.igv-roi-region');
+            for (let el of elements) {
+                el.remove();
+            }
+
+            for (let roiSet of this.roiSets) {
+                roiSet.dispose();
+            }
+
+            this.roiSets = [];
+
+        }
+
+        async getTableRecords() {
+
+            const records = [];
+
+            for (let roiSet of this.roiSets) {
+                const setName = roiSet.isUserDefined ? '' : (roiSet.name || '');
+                const allFeatures = await roiSet.getAllFeatures();
+                for (let chr of Object.keys(allFeatures)) {
+                    for (let feature of allFeatures[chr]) {
+                        records.push({setName, feature});
+                    }
+                }
+            }
+
+            return records
+        }
+
+        presentTable() {
+            this.roiTable.present();
+        }
+
+        async repaintTable() {
+            const records = await this.getTableRecords();
+            this.roiTable.renderTable(records);
+        }
+
+        dismissTable() {
+            this.roiTable.dismiss();
+        }
+
+        async updateUserDefinedROISet(feature) {
+
+            let userDefinedROISet = await this.getUserDefinedROISet();
+
+            if (undefined === userDefinedROISet) {
+                userDefinedROISet = this.initializeUserDefinedROISet();
+            }
+
+            userDefinedROISet.addFeature(feature);
+
+            if (false === this.browser.showROITableButton) {
+                this.setROITableButtonVisibility(true);
+            }
+
+            await this.renderROISet({browser: this.browser, pixelTop: this.top, roiSet: userDefinedROISet});
+
+            const records = await this.getTableRecords();
+            this.roiTable.renderTable(records);
+        }
+
+        setROITableButtonVisibility(isVisible) {
+            this.browser.showROITableButton = isVisible;
+            this.browser.roiTableControl.setVisibility(this.browser.showROITableButton);
+        }
+
+        async renderAllROISets() {
+
+            for (let roiSet of this.roiSets) {
+                await this.renderROISet({browser: this.browser, pixelTop: this.top, roiSet});
+            }
+        }
+
+        async renderROISet({browser, pixelTop, roiSet}) {
+
+            const columns = browser.columnContainer.querySelectorAll('.igv-column');
+
+            for (let i = 0; i < columns.length; i++) {
+
+                let {chr, start: viewStart, end: viewEnd, bpPerPixel} = browser.referenceFrameList[i];
+
+                const elements = columns[i].querySelectorAll('.igv-roi-region');
+                for (let el of elements) {
+                    const regionKey = el.dataset.region;
+                    const {chr: regionChr, start: regionStart, end: regionEnd} = parseRegionKey(regionKey);
+                    if (regionChr !== chr || regionEnd < viewStart || regionStart > viewEnd) {
+                        el.remove();
+                    }
+                }
+
+                const features = await roiSet.getFeatures(chr, viewStart, viewEnd);
+
+                if (features) {
+
+                    for (let feature of features) {
+
+                        const regionKey = createRegionKey(chr, feature.start, feature.end);
+
+                        const {
+                            x: pixelX,
+                            width: pixelWidth
+                        } = screenCoordinates(Math.max(viewStart, feature.start), Math.min(viewEnd, feature.end), viewStart, bpPerPixel);
+
+
+                        const el = columns[i].querySelector(createSelector(regionKey));
+
+                        if (el) {
+                            el.style.left = `${pixelX}px`;
+                            el.style.width = `${pixelWidth}px`;
+
+                        } else {
+                            const element = this.createRegionElement(browser.columnContainer, pixelTop, pixelX, pixelWidth, roiSet, regionKey, feature.name);
+                            columns[i].appendChild(element);
+                        }
+                    }
+                }
+            }
+        }
+
+        createRegionElement(columnContainer, pixelTop, pixelX, pixelWidth, roiSet, regionKey, name) {
+
+            const regionElement = domUtils.div({class: 'igv-roi-region'});
+
+            regionElement.style.top = `${pixelTop}px`;
+            regionElement.style.left = `${pixelX}px`;
+            regionElement.style.width = `${pixelWidth}px`;
+            regionElement.style.backgroundColor = roiSet.color;
+            regionElement.dataset.region = regionKey;
+
+            const header = domUtils.div();
+            regionElement.appendChild(header);
+
+            header.style.backgroundColor = roiSet.headerColor;
+
+            if (true === roiSet.isUserDefined) {
+                header.addEventListener('click', event => {
+                    event.preventDefault();
+                    event.stopPropagation();
+
+                    const {x, y} = domUtils.translateMouseCoordinates(event, columnContainer);
+                    this.roiMenu.present(x, y, this, columnContainer, regionElement);
+                });
+            } else if (name) {
+                header.addEventListener('click', event => {
+                    event.preventDefault();
+                    event.stopPropagation();
+                    if (this.popover) {
+                        this.popover.dispose();
+                    }
+                    this.popover = new Popover(columnContainer, roiSet.name);
+                    this.popover.presentContentWithEvent(event, name);
+                });
+            } else {
+                header.style.pointerEvents = 'none';
+            }
+
+            return regionElement
+        }
+
+        renderSVGContext(context, {deltaX, deltaY}) {
+
+            for (const regionElement of document.querySelectorAll('.igv-roi-region')) {
+
+                // body
+                const { x, y, width, height } = regionElement.getBoundingClientRect();
+                context.fillStyle = regionElement.style.backgroundColor;
+                context.fillRect(x+deltaX, y+deltaY, width, height);
+
+                // header
+                const header = regionElement.querySelector('div');
+                const { x:xx, y:yy, width:ww, height:hh } = header.getBoundingClientRect();
+                context.fillStyle = header.style.backgroundColor;
+                context.fillRect(xx+deltaX, yy+deltaY, ww, hh);
+            }
+        }
+
+        async getUserDefinedROISet() {
+            return this.roiSets.find(roiSet => true === roiSet.isUserDefined)
+        }
+
+        initializeUserDefinedROISet() {
+
+            const config =
+                {
+                    isUserDefined: true,
+                    features: []
+                };
+            const userDefinedROISet = new ROISet(config, this.browser.genome);
+            this.roiSets.push(userDefinedROISet);
+
+            return userDefinedROISet
+        }
+
+        async deleteUserDefinedRegionWithKey(regionKey, columnContainer) {
+
+            columnContainer.querySelectorAll(createSelector(regionKey)).forEach(node => node.remove());
+
+            const feature = await this.findUserDefinedRegionWithKey(regionKey);
+
+            const set = await this.getUserDefinedROISet();
+
+            if (set) {
+                set.removeFeature(feature);
+            }
+
+            const records = await this.getTableRecords();
+
+            if (0 === records.length) {
+                this.browser.roiTableControl.buttonHandler(false);
+                this.setROITableButtonVisibility(false);
+            }
+
+        }
+
+        async findUserDefinedRegionWithKey(regionKey) {
+
+            const {chr, start, end} = parseRegionKey(regionKey);
+            const set = await this.getUserDefinedROISet();
+
+            if (set) {
+                const features = await set.getFeatures(chr, start, end);
+
+                for (let feature of features) {
+                    if (feature.chr === chr && feature.start >= start && feature.end <= end) {
+                        return feature
+                    }
+                }
+            }
+
+            return undefined
+        }
+
+        toJSON() {
+            return this.roiSets.map(roiSet => roiSet.toJSON())
+        }
+
+        dispose() {
+
+            this.browser.off('locuschange', this.boundLocusChangeHandler);
+
+            const removable = this.browser.columnContainer.querySelectorAll('.igv-roi-region');
+
+            for (let el of removable) {
+                el.remove();
+            }
+
+            if (this.roiMenu) {
+                this.roiMenu.dispose();
+            }
+
+            if (this.roiTable) {
+                this.roiTable.dispose();
+            }
+
+            for (let roiSet of this.roiSets) {
+                roiSet.dispose();
+            }
+
+            for (let key of Object.keys(this)) {
+                this[key] = undefined;
+            }
+
+        }
+    }
+
+    function locusChangeHandler() {
+        this.renderAllROISets();
+    }
+
+    function createRegionKey(chr, start, end) {
+        return `${chr}-${start}-${end}`
+    }
+
+    function createSelector(regionKey) {
+        return `[data-region="${regionKey}"]`
+    }
+
+    function parseRegionKey(regionKey) {
+        let [chr, ss, ee] = regionKey.split('-');
+        ss = parseInt(ss);
+        ee = parseInt(ee);
+
+        return {chr, start: ss, end: ee, locus: `${chr}:${ss}-${ee}`, bedRecord: `${chr}\t${ss}\t${ee}`}
+    }
+
+    class ROITable extends RegionTableBase {
+        constructor(config) {
+
+            const cooked = Object.assign({ 'width':'512px' }, config);
+            super(cooked);
+        }
+
+        tableRowDOM(record) {
+
+            const dom = domUtils.div({ class: 'igv-roi-table-row' });
+
+            const { setName, feature } = record;
+            dom.dataset.region = createRegionKey(feature.chr, feature.start, feature.end);
+
+            let strings =
+                [
+                    feature.chr,
+                    numberFormatter$1(feature.start),
+                    numberFormatter$1(feature.end),
+                    feature.name || '',
+                    setName
+                ];
+
+            if (4 === this.columnFormat.length) {
+                strings = strings.slice(0, 4);
+            }
+
+            for (let i = 0; i < strings.length; i++) {
+                const el = domUtils.div();
+                dom.appendChild(el);
+                el.style.width = this.columnFormat[ i ].width;
+                el.innerText = strings[ i ];
+            }
+
+            this.tableRowDOMHelper(dom);
+
+            return dom
+        }
+
+        renderTable(records) {
+
+            Array.from(this.tableRowContainer.querySelectorAll('.igv-roi-table-row')).forEach(el => el.remove());
+
+            if (records.length > 0) {
+
+                const sortedRecords = records.sort((a, b) => (a.feature.chr.localeCompare(b.feature.chr) || a.feature.start - b.feature.start || a.feature.end - b.feature.end));
+
+                for (let record of sortedRecords) {
+                    const row = this.tableRowDOM(record);
+                    this.tableRowContainer.appendChild(row);
+                }
+
+            }
+        }
+
+        dispose() {
+
+            document.removeEventListener('click', this.boundGotoButtonHandler);
+
+            this.browser.roiTableControl.buttonHandler(false);
+            super.dispose();
+        }
+
+        static getColumnFormatConfiguration(doIncludeROISetNames) {
+
+            if (true === doIncludeROISetNames) {
+
+                return [
+                        { label: 'Chr', width: '20%' },
+                        { label: 'Start', width: '15%' },
+                        { label: 'End', width: '15%' },
+                        { label: 'Description', width: '30%' },
+                        { label: 'ROI Set', width: '20%' }
+                    ]
+            } else {
+                return [
+                        { label: 'Chr', width: '25%' },
+                        { label: 'Start', width: '20%' },
+                        { label: 'End', width: '20%' },
+                        { label: 'Description', width: '35%' }
+                    ]
+            }
+
+        }
+
+        static gotoButtonHandler (event) {
+
+            event.stopPropagation();
+
+            const selected = this.tableDOM.querySelectorAll('.igv-roi-table-row-selected');
+            const loci = [];
+            for (let el of selected) {
+                const { locus } = parseRegionKey(el.dataset.region);
+                loci.push(locus);
+            }
+
+            for (let el of this.tableDOM.querySelectorAll('.igv-roi-table-row')) {
+                el.classList.remove('igv-roi-table-row-selected');
+            }
+
+            this.setTableRowSelectionState(false);
+
+            if (loci.length > 0) {
+                this.browser.search(loci.join(' '));
+            }
+
+        }
+
+    }
+
+    class ROIMenu {
+        constructor(browser, parent) {
+
+            this.browser = browser;
+
+            // container
+            this.container = domUtils.div({ class: 'igv-roi-menu-next-gen' });
+            parent.appendChild(this.container);
+
+            // header
+            const header = domUtils.div();
+            this.container.appendChild(header);
+
+            uiUtils.attachDialogCloseHandlerWithParent(header, () => this.container.style.display = 'none');
+
+            // body
+            this.body = domUtils.div();
+            this.container.appendChild(this.body);
+
+            this.container.style.display = 'none';
+
+        }
+
+        async present(x, y, roiManager, columnContainer, regionElement) {
+
+            removeAllChildNodes(this.body);
+
+            const feature = await this.browser.roiManager.findUserDefinedRegionWithKey(regionElement.dataset.region);
+
+            // Description Copy
+            const _description_copy_ = domUtils.div();
+            this.body.appendChild(_description_copy_);
+
+            const placeholder = 'Description';
+            const str = (feature.name || placeholder);
+
+            _description_copy_.innerText = str;
+            _description_copy_.setAttribute('title', str);
+            placeholder === str ? _description_copy_.classList.add('igv-roi-placeholder') : _description_copy_.classList.remove('igv-roi-placeholder');
+
+
+            // Set Description
+            const description = domUtils.div();
+            this.body.appendChild(description);
+            description.innerText = 'Set Description';
+
+            description.addEventListener('click', event => {
+
+                event.stopPropagation();
+
+                this.container.style.display = 'none';
+
+                const callback = () => {
+
+                    const value = this.browser.inputDialog.value || '';
+                    feature.name = value.trim();
+
+                    this.container.style.display = 'none';
+
+                    this.browser.roiManager.repaintTable();
+                };
+
+                const config =
+                    {
+                        label: 'Description',
+                        value: (feature.name || ''),
+                        callback
+                    };
+
+                this.browser.inputDialog.present(config, event);
+
+            });
+
+
+            // Delete Region
+            const _delete_ = domUtils.div();
+            this.body.appendChild(_delete_);
+            _delete_.innerText = 'Delete Region';
+
+            _delete_.addEventListener('click', event => {
+                event.stopPropagation();
+                this.container.style.display = 'none';
+                this.browser.roiManager.deleteUserDefinedRegionWithKey(regionElement.dataset.region, this.browser.columnContainer);
+            });
+
+
+
+
+
+
+
+            // columnContainer.addEventListener('click', event => {
+            //     event.stopPropagation()
+            //     this.container.style.display = 'none'
+            // })
+
+            this.container.style.left = `${ x }px`;
+            this.container.style.top  = `${ y }px`;
+            this.container.style.display = 'flex';
+
+        }
+
+        async __present(x, y, roiManager, columnContainer, regionElement) {
+
+            removeAllChildNodes(this.container);
+
+            const feature = await this.browser.roiManager.findUserDefinedRegionWithKey(regionElement.dataset.region);
+
+            let row;
+
+            // Go To
+            // row = DOMUtils.div({ class: 'igv-roi-menu-row' })
+            // row.innerText = 'Go To'
+            // this.container.appendChild(row)
+            //
+            // row.addEventListener('click', event => {
+            //     event.stopPropagation()
+            //     this.container.style.display = 'none'
+            //
+            //     const { locus } = parseRegionKey(regionElement.dataset.region)
+            //     this.browser.search(locus)
+            // })
+
+            // Description:
+            row = domUtils.div({ class: 'igv-roi-menu-row-edit-description' });
+            this.container.appendChild(row);
+
+            row.addEventListener('click', e => {
+                e.stopPropagation();
+            });
+
+            const str = 'description-input';
+
+            const label = document.createElement('label');
+            row.appendChild(label);
+
+            label.setAttribute('for', str);
+            label.innerText = 'Description:';
+
+            const input = document.createElement('input');
+            row.appendChild(input);
+
+            input.setAttribute('type', 'text');
+            input.setAttribute('name', str);
+            // input.setAttribute('placeholder', feature.name || 'Edit Description')
+            input.setAttribute('placeholder', '');
+            input.value = feature.name || '';
+
+            input.addEventListener('change', async e => {
+
+                e.stopPropagation();
+
+                const feature = await this.browser.roiManager.findUserDefinedRegionWithKey(regionElement.dataset.region);
+                feature.name = input.value;
+
+                input.blur();
+                this.container.style.display = 'none';
+
+                await this.browser.roiManager.repaintTable();
+            });
+
+
+            // Delete
+            row = domUtils.div({ class: 'igv-roi-menu-row' });
+            row.innerText = 'Delete region';
+            this.container.appendChild(row);
+
+            row.addEventListener('click', event => {
+                event.stopPropagation();
+                this.container.style.display = 'none';
+                this.browser.roiManager.deleteUserDefinedRegionWithKey(regionElement.dataset.region, this.browser.columnContainer);
+            });
+
+            this.container.style.left = `${ x }px`;
+            this.container.style.top  = `${ y }px`;
+            this.container.style.display = 'flex';
+
+            columnContainer.addEventListener('click', event => {
+                event.stopPropagation();
+                this.container.style.display = 'none';
+            });
+
+        }
+
+        dispose() {
+            this.container.innerHTML = '';
+        }
+
+    }
+
+    function removeAllChildNodes(parent) {
+        while (parent.firstChild) {
+            parent.removeChild(parent.firstChild);
+        }
+    }
+
+    class TrackROISet {
+
+        constructor(config, genome) {
+            this.name = config.name;
+            this.featureSource = config.featureSource || FeatureSource(config, genome);
+            this.color = config.color || ROI_DEFAULT_COLOR;
+        }
+
+        async getFeatures(chr, start, end) {
+            return this.featureSource.getFeatures({chr, start, end})
+        }
+
+        draw(drawConfiguration) {
+
+            const { context, bpPerPixel, bpStart, pixelTop, pixelHeight, pixelWidth, features, } = drawConfiguration;
+
+            if (!features) {
+                return
+            }
+
+            const bpEnd = bpStart + (pixelWidth * bpPerPixel) + 1;
+            for (let { start:regionStartBP, end:regionEndBP } of features) {
+
+                if (regionEndBP < bpStart) {
+                    continue
+                }
+
+                if (regionStartBP > bpEnd) {
+                    break
+                }
+
+                const { x, width } = screenCoordinates(regionStartBP, regionEndBP, bpStart, bpPerPixel);
+                IGVGraphics.fillRect(context, x, pixelTop, width, pixelHeight, { fillStyle: this.color });
+            }
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2016 University of California San Diego
+     * Author: Jim Robinson
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    class ROITableControl {
+
+        constructor(parent, browser) {
+            this.browser = browser;
+            this.button = domUtils.div({class: 'igv-navbar-button'});
+            parent.appendChild(this.button);
+            this.button.textContent = 'ROI Table';
+
+            this.button.addEventListener('click', () => {
+                this.buttonHandler(!browser.roiTableVisible);
+            });
+
+            this.browser = browser;
+
+            this.setVisibility(browser.showROITableButton);
+
+            this.setState(browser.roiTableVisible);
+        }
+
+        buttonHandler(status) {
+            this.browser.roiTableVisible = status;
+            this.setState(this.browser.roiTableVisible);
+            this.browser.setROITableVisibility(this.browser.roiTableVisible);
+        }
+
+        setVisibility(doShowROITablelButton) {
+            if (true === doShowROITablelButton) {
+                this.show();
+            } else {
+                this.hide();
+            }
+        }
+
+        setState(roiTableVisible) {
+            if (true === roiTableVisible) {
+                this.button.classList.add('igv-navbar-button-clicked');
+            } else {
+                this.button.classList.remove('igv-navbar-button-clicked');
+            }
+        }
+
+        show() {
+            this.button.style.display = 'block';
+            this.setState(this.browser.roiTableVisible);
+        }
+
+        hide() {
+            this.button.style.display = 'none';
+        }
+    }
+
+    // css - $igv-scrollbar-outer-width: 14px;
+    const igv_scrollbar_outer_width = 14;
+
+    // css - $igv-track-drag-column-width: 12px;
+    const igv_track_manipulation_handle_width = 12;
+
+    // css - $igv-track-gear-menu-column-width: 28px;
+    const igv_track_gear_menu_column_width = 28;
+
+    // $igv-column-shim-width: 1px;
+    // $igv-column-shim-margin: 2px;
+    const column_multi_locus_shim_width = 2 + 1 + 2;
+
+    const defaultSampleNameViewportWidth = 200;
+
+    class Browser {
+
+        constructor(config, parentDiv) {
+
+            this.config = config;
+            this.guid = domUtils.guid();
+            this.namespace = '.browser_' + this.guid;
+
+            this.parent = parentDiv;
+
+            this.root = domUtils.div({class: 'igv-container'});
+            parentDiv.appendChild(this.root);
+
+            this.alert = new Alert(this.root);
+
+            this.columnContainer = domUtils.div({class: 'igv-column-container'});
+            this.root.appendChild(this.columnContainer);
+
+            this.menuPopup = new MenuPopup(this.columnContainer);
+
+            this.initialize(config);
+
+            this.trackViews = [];
+
+            this.constants = {
+                dragThreshold: 3,
+                scrollThreshold: 5,
+                defaultColor: "rgb(0,0,150)",
+                doubleClickDelay: config.doubleClickDelay || 500
+            };
+
+            // Map of event name -> [ handlerFn, ... ]
+            this.eventHandlers = {};
+
+            this.addMouseHandlers();
+
+            this.setControls(config);
+        }
+
+        initialize(config) {
+
+            if (config.gtex) {
+                GtexUtils.gtexLoaded = true;
+            }
+            this.flanking = config.flanking;
+            this.crossDomainProxy = config.crossDomainProxy;
+            this.formats = config.formats;
+            this.trackDefaults = config.trackDefaults;
+            this.nucleotideColors = config.nucleotideColors || defaultNucleotideColors;
+            for (let key of Object.keys(this.nucleotideColors)) {
+                this.nucleotideColors[key.toLowerCase()] = this.nucleotideColors[key];
+            }
+
+            this.trackLabelsVisible = config.showTrackLabels;
+
+            this.roiTableVisible = config.showROITable;
+            this.showROITableButton = config.showROITableButton;
+
+            this.isCenterLineVisible = config.showCenterGuide;
+
+            this.cursorGuideVisible = config.showCursorGuide;
+
+            this.showSampleNames = config.showSampleNames;
+            this.showSampleNameButton = config.showSampleNameButton;
+            this.sampleNameViewportWidth = config.sampleNameViewportWidth || defaultSampleNameViewportWidth;
+
+            if (config.search) {
+                this.searchConfig = {
+                    type: "json",
+                    url: config.search.url,
+                    coords: config.search.coords === undefined ? 1 : config.search.coords,
+                    chromosomeField: config.search.chromosomeField || "chromosome",
+                    startField: config.search.startField || "start",
+                    endField: config.search.endField || "end",
+                    geneField: config.search.geneField || "gene",
+                    snpField: config.search.snpField || "snp",
+                    resultsField: config.search.resultsField
+                };
+            }
+        }
+
+        setControls(config) {
+
+            const $navBar = this.createStandardControls(config);
+            $navBar.insertBefore($$1(this.columnContainer));
+            this.$navigation = $navBar;
+
+            if (false === config.showControls) {
+                $navBar.hide();
+            }
+
+        }
+
+        createStandardControls(config) {
+
+            this.navbarManager = new NavbarManager(this);
+
+            const $navBar = $$1('<div>', {class: 'igv-navbar'});
+            this.$navigation = $navBar;
+
+            const $navbarLeftContainer = $$1('<div>', {class: 'igv-navbar-left-container'});
+            $navBar.append($navbarLeftContainer);
+
+            // IGV logo
+            const $logo = $$1('<div>', {class: 'igv-logo'});
+            $navbarLeftContainer.append($logo);
+
+            const logoSvg = logo();
+            logoSvg.css("width", "34px");
+            logoSvg.css("height", "32px");
+            $logo.append(logoSvg);
+
+            this.$current_genome = $$1('<div>', {class: 'igv-current-genome'});
+            $navbarLeftContainer.append(this.$current_genome);
+            this.$current_genome.text('');
+
+            const $genomicLocation = $$1('<div>', {class: 'igv-navbar-genomic-location'});
+            $navbarLeftContainer.append($genomicLocation);
+
+            // chromosome select widget
+            this.chromosomeSelectWidget = new ChromosomeSelectWidget(this, $genomicLocation.get(0));
+            if (undefined === config.showChromosomeWidget) {
+                config.showChromosomeWidget = true;   // Default to true
+            }
+            if (true === config.showChromosomeWidget) {
+                this.chromosomeSelectWidget.show();
+            } else {
+                this.chromosomeSelectWidget.hide();
+            }
+
+            const $locusSizeGroup = $$1('<div>', {class: 'igv-locus-size-group'});
+            $genomicLocation.append($locusSizeGroup);
+
+            const $searchContainer = $$1('<div>', {class: 'igv-search-container'});
+            $locusSizeGroup.append($searchContainer);
+
+            // browser.$searchInput = $('<input type="text" placeholder="Locus Search">');
+            this.$searchInput = $$1('<input>', {class: 'igv-search-input', type: 'text', placeholder: 'Locus Search'});
+            $searchContainer.append(this.$searchInput);
+
+            this.$searchInput.change(() => this.doSearch(this.$searchInput.val()));
+
+            const searchIconContainer = domUtils.div({class: 'igv-search-icon-container'});
+            $searchContainer.append($$1(searchIconContainer));
+
+            searchIconContainer.appendChild(icons$1.createIcon("search"));
+
+            searchIconContainer.addEventListener('click', () => this.doSearch(this.$searchInput.val()));
+
+            this.windowSizePanel = new WindowSizePanel($locusSizeGroup.get(0), this);
+
+            const $navbarRightContainer = $$1('<div>', {class: 'igv-navbar-right-container'});
+            $navBar.append($navbarRightContainer);
+
+            const $toggle_button_container = $$1('<div class="igv-navbar-toggle-button-container">');
+            $navbarRightContainer.append($toggle_button_container);
+            this.$toggle_button_container = $toggle_button_container;
+
+            this.cursorGuide = new CursorGuide(this.columnContainer, this);
+
+            this.cursorGuideButton = new CursorGuideButton(this, $toggle_button_container.get(0));
+
+            this.centerLineButton = new CenterLineButton(this, $toggle_button_container.get(0));
+
+            this.setTrackLabelVisibility(config.showTrackLabels);
+            this.trackLabelControl = new TrackLabelControl($toggle_button_container.get(0), this);
+
+            // ROI Control
+            this.roiTableControl = new ROITableControl($toggle_button_container.get(0), this);
+
+            this.sampleNameControl = new SampleNameControl($toggle_button_container.get(0), this);
+
+            if (true === config.showSVGButton) {
+                this.svgSaveControl = new SVGSaveControl($toggle_button_container.get(0), this);
+            }
+
+            if (config.customButtons) {
+                for (let b of config.customButtons) {
+                    new CustomButton($toggle_button_container.get(0), this, b);
+                }
+            }
+
+            this.zoomWidget = new ZoomWidget(this, $navbarRightContainer.get(0));
+
+            if (false === config.showNavigation) {
+                this.$navigation.hide();
+            }
+
+            this.inputDialog = new InputDialog(this.root);
+            this.inputDialog.container.id = `igv-input-dialog-${domUtils.guid()}`;
+
+            this.dataRangeDialog = new DataRangeDialog(this, $$1(this.root));
+            this.dataRangeDialog.$container.get(0).id = `igv-data-range-dialog-${domUtils.guid()}`;
+
+            this.genericColorPicker = new GenericColorPicker({parent: this.columnContainer, width: 432});
+            this.genericColorPicker.container.id = `igv-track-color-picker-${domUtils.guid()}`;
+
+            return $navBar
+
+        }
+
+        getSampleNameViewportWidth() {
+            return false === this.showSampleNames ? 0 : this.sampleNameViewportWidth
+        }
+
+        isMultiLocusMode() {
+            return this.referenceFrameList && this.referenceFrameList.length > 1
+        };
+
+        addTrackToFactory(name, track) {
+            TrackFactory.addTrack(name, track);
+        }
+
+        isMultiLocusWholeGenomeView() {
+
+            if (undefined === this.referenceFrameList || 1 === this.referenceFrameList.length) {
+                return false
+            }
+
+            for (let referenceFrame of this.referenceFrameList) {
+                if ('all' === referenceFrame.chr.toLowerCase()) {
+                    return true
+                }
+            }
+
+            return false
+        };
+
+        /**
+         * PUBLIC API FUNCTION
+         *
+         * Return the current genomic region as a locus string, or array of locus strings if in multi-locus view
+         * @returns {string|*[]|*}
+         */
+        currentLoci() {
+            const noCommaLocusString = (rf) => `${rf.chr}:${rf.start + 1}-${rf.end}`;
+            if (undefined === this.referenceFrameList || 0 === this.referenceFrameList.length) {
+                return ""
+            } else if (1 === this.referenceFrameList.length) {
+                return noCommaLocusString(this.referenceFrameList[0])
+            } else {
+                return this.referenceFrameList.map(rf => noCommaLocusString(rf))
+            }
+        }
+
+        /**
+         * Render browse display as SVG
+         * @returns {string}
+         */
+        toSVG() {
+
+            const {y, width, height} = this.columnContainer.getBoundingClientRect();
+
+            const h_render = 8000;
+
+            const config =
+                {
+
+                    width,
+                    height: h_render,
+
+                    backdropColor: 'white',
+
+                    multiLocusGap: 0,
+
+                    viewbox:
+                        {
+                            x: 0,
+                            y: 0,
+                            width,
+                            height: h_render
+                        }
+
+                };
+
+            const context = new ctx(config);
+
+            // tracks -> SVG
+            const delta = {deltaX: 0, deltaY: -y};
+            for (let trackView of this.trackViews) {
+                trackView.renderSVGContext(context, delta);
+            }
+
+            this.roiManager.renderSVGContext(context, delta);
+
+            // reset height to trim away unneeded svg canvas real estate. Yes, a bit of a hack.
+            context.setHeight(height);
+
+            return context.getSerializedSvg(true)
+
+        }
+
+        renderSVG($container) {
+            const svg = this.toSVG();
+            $container.empty();
+            $container.append(svg);
+
+            return svg
+        }
+
+        saveSVGtoFile(config) {
+
+            let svg = this.toSVG();
+
+            if (config.$container) {
+                config.$container.empty();
+                config.$container.append(svg);
+            }
+
+            const path = config.filename || 'igvjs.svg';
+            const data = URL.createObjectURL(new Blob([svg], {type: "application/octet-stream"}));
+            download(path, data);
+        }
+
+        /**
+         * Initialize a session from an object, json, or by loading from a file.
+         *
+         * TODO Really should be split into at least 2 functions, load from file and load from object/json
+         *
+         * @param options
+         * @returns {*}
+         */
+        async loadSession(options) {
+
+            // TODO: depricated
+            this.roiSets = [];
+
+            let session;
+            if (options.url || options.file) {
+                session = await loadSessionFile(options);
+            } else {
+                session = options;
+            }
+            return this.loadSessionObject(session)
+
+
+            async function loadSessionFile(options) {
+
+                const urlOrFile = options.url || options.file;
+
+                if (options.url && (options.url.startsWith("blob:") || options.url.startsWith("data:"))) {
+                    const json = Browser.uncompressSession(options.url);
+                    return JSON.parse(json)
+
+                } else {
+                    let filename = options.filename;
+                    if (!filename) {
+                        filename = (options.url ? await getFilename$1(options.url) : options.file.name);
+                    }
+
+                    if (filename.endsWith(".xml")) {
+
+                        const knownGenomes = GenomeUtils.KNOWN_GENOMES;
+                        const string = await igvxhr.loadString(urlOrFile);
+                        return new XMLSession(string, knownGenomes)
+
+                    } else if (filename.endsWith(".json")) {
+                        return igvxhr.loadJson(urlOrFile)
+                    } else {
+                        return undefined
+                    }
+                }
+            }
+        }
+
+
+        /**
+         * Note:  public API function
+         * @param session
+         * @returns {Promise<void>}
+         */
+        async loadSessionObject(session) {
+
+            // prepare to load a new session, discarding DOM and state
+            this.cleanHouseForSession();
+
+            this.showSampleNames = session.showSampleNames || false;
+            this.sampleNameControl.setState(this.showSampleNames === true);
+
+            if (session.sampleNameViewportWidth) {
+                this.sampleNameViewportWidth = session.sampleNameViewportWidth;
+            }
+
+            // axis column
+            createColumn(this.columnContainer, 'igv-axis-column');
+
+            // SampleName column
+            createColumn(this.columnContainer, 'igv-sample-name-column');
+
+            // Track scrollbar column
+            createColumn(this.columnContainer, 'igv-scrollbar-column');
+
+            // Track drag/reorder column
+            createColumn(this.columnContainer, 'igv-track-drag-column');
+
+            // Track gear column
+            createColumn(this.columnContainer, 'igv-gear-menu-column');
+
+            const genomeOrReference = session.reference || session.genome;
+            if(!genomeOrReference) {
+                console.warn("No genome or reference object specified");
+                return;
+            }
+            const genomeConfig = await GenomeUtils.expandReference(this.alert, genomeOrReference);
+
+
+            await this.loadReference(genomeConfig, session.locus);
+
+            this.centerLineList = this.createCenterLineList(this.columnContainer);
+
+            // Create ideogram and ruler track.  Really this belongs in browser initialization, but creation is
+            // deferred because ideogram and ruler are treated as "tracks", and tracks require a reference frame
+            let ideogramHeight = 0;
+            if (false !== session.showIdeogram) {
+
+                const track = new IdeogramTrack(this);
+                track.id = 'ideogram';
+
+                const trackView = new TrackView(this, this.columnContainer, track);
+                const {$viewport} = trackView.viewports[0];
+                ideogramHeight = getElementAbsoluteHeight($viewport.get(0));
+
+                this.trackViews.push(trackView);
+            }
+
+            if (false !== session.showRuler) {
+                this.trackViews.push(new TrackView(this, this.columnContainer, new RulerTrack(this)));
+            }
+
+            // Restore gtex selections.
+            if (session.gtexSelections) {
+                for (let referenceFrame of this.referenceFrameList) {
+                    for (let s of Object.keys(session.gtexSelections)) {
+                        const gene = session.gtexSelections[s].gene;
+                        const snp = session.gtexSelections[s].snp;
+                        referenceFrame.selection = new GtexSelection(gene, snp);
+                    }
+                }
+            }
+
+            if (this.roiManager) {
+                this.roiManager.dispose();
+            }
+
+            const roiMenu = new ROIMenu(this, this.columnContainer);
+            const roiTableConfig =
+                {
+                    browser: this,
+                    parent: this.columnContainer,
+                    headerTitle: 'Regions of Interest',
+                    dismissHandler: () => this.roiTableControl.buttonHandler(false),
+                    gotoButtonHandler: ROITable.gotoButtonHandler
+                };
+            if (session.roi) {
+
+                const roiSetList = session.roi.map(c => new ROISet(c, this.genome));
+
+                const named = roiSetList.filter(({name}) => name !== undefined && name.length > 0);
+
+                roiTableConfig.columnFormat = ROITable.getColumnFormatConfiguration(named.length > 0);
+
+                const roiTable = new ROITable(roiTableConfig);
+
+                this.roiManager = new ROIManager(this, roiMenu, roiTable, ideogramHeight, roiSetList);
+            } else {
+
+                roiTableConfig.columnFormat = ROITable.getColumnFormatConfiguration(false);
+
+                const roiTable = new ROITable(roiTableConfig);
+
+                this.roiManager = new ROIManager(this, roiMenu, roiTable, ideogramHeight, undefined);
+            }
+
+            await this.roiManager.initialize();
+
+            // Tracks.  Start with genome tracks, if any, then append session tracks
+            const genomeTracks = genomeConfig.tracks || [];
+            const trackConfigurations = session.tracks ? genomeTracks.concat(session.tracks) : genomeTracks;
+
+            // Ensure that we always have a sequence track with no explicit URL (=> the reference genome sequence track)
+            const pushSequenceTrack = trackConfigurations.filter(track => 'sequence' === track.type && !track.url && !track.fastaURL).length === 0;
+            if (pushSequenceTrack /*&& false !== this.config.showSequence*/) {
+                trackConfigurations.push({type: "sequence", order: defaultSequenceTrackOrder});
+            }
+
+            // Maintain track order unless explicitly set
+            let trackOrder = 1;
+            for (let t of trackConfigurations) {
+                if (undefined === t.order) {
+                    t.order = trackOrder++;
+                }
+            }
+
+            await this.loadTrackList(trackConfigurations);
+
+            // The ruler and ideogram tracks are not explicitly loaded, but needs updated nonetheless.
+            for (let rtv of this.trackViews.filter((tv) => tv.track.type === 'ruler' || tv.track.type === 'ideogram')) {
+                rtv.updateViews();
+            }
+
+            this.updateUIWithReferenceFrameList();
+
+        }
+
+        createCenterLineList(columnContainer) {
+
+            const centerLines = columnContainer.querySelectorAll('.igv-center-line');
+            for (let i = 0; i < centerLines.length; i++) {
+                centerLines[i].remove();
+            }
+
+            const centerLineList = [];
+            const viewportColumns = columnContainer.querySelectorAll('.igv-column');
+            for (let i = 0; i < viewportColumns.length; i++) {
+                centerLineList.push(new ViewportCenterLine(this, this.referenceFrameList[i], viewportColumns[i]));
+            }
+
+            return centerLineList
+        }
+
+        /**
+         * Load a reference genome object.  This includes the fasta, and optional cytoband, but no tracks.  This method
+         * is used by loadGenome and loadSession.
+         *
+         * @param genomeConfig
+         * @param initialLocus
+         */
+        async loadReference(genomeConfig, initialLocus) {
+
+            const genome = await GenomeUtils.loadGenome(genomeConfig);
+
+            const genomeChange = undefined === this.genome || (this.genome.id !== genome.id);
+
+            this.genome = genome;
+
+            this.updateNavbarDOMWithGenome(genome);
+
+            if (genomeChange) {
+                this.removeAllTracks();
+            }
+
+            let locus = getInitialLocus(initialLocus, genome);
+            const locusFound = await this.search(locus, true);
+            if (!locusFound) {
+                console.log("Initial locus not found: " + locus);
+                locus = genome.getHomeChromosomeName();
+                const locusFound = await this.search(locus, true);
+                if (!locusFound) {
+                    throw new Error("Cannot set initial locus")
+                }
+            }
+
+            if (genomeChange && this.circularView) {
+                this.circularView.setAssembly({
+                    name: this.genome.id,
+                    id: this.genome.id,
+                    chromosomes: makeCircViewChromosomes(this.genome)
+                });
+            }
+        }
+
+        cleanHouseForSession() {
+
+            for (let trackView of this.trackViews) {
+                // empty axis column, viewport columns, sampleName column, scroll column, drag column, gear column
+                trackView.removeDOMFromColumnContainer();
+            }
+
+            // discard all columns
+            const elements = this.columnContainer.querySelectorAll('.igv-axis-column, .igv-column-shim, .igv-column, .igv-sample-name-column, .igv-scrollbar-column, .igv-track-drag-column, .igv-gear-menu-column');
+            elements.forEach(column => column.remove());
+
+            this.trackViews = [];
+
+            if (this.circularView) {
+                this.circularView.clearChords();
+            }
+
+        }
+
+        updateNavbarDOMWithGenome(genome) {
+
+            // If the genome is defined directly from a fasta file or data url the "id" will be the full url.  Don't display
+            // this.
+            let genomeLabel = (genome.id && genome.id.length < 10 ? genome.id : '');
+            this.$current_genome.text(genomeLabel);
+            this.$current_genome.attr('title', genome.id || '');
+            this.chromosomeSelectWidget.update(genome);
+        }
+
+        /**
+         * Load a genome, defined by a string ID or a json-like configuration object. This includes a fasta reference
+         * as well as optional cytoband and annotation tracks.
+         *
+         * @param idOrConfig
+         * @returns genome
+         */
+        async loadGenome(idOrConfig) {
+
+            const genomeConfig = await GenomeUtils.expandReference(this.alert, idOrConfig);
+            await this.loadReference(genomeConfig, undefined);
+
+            const tracks = genomeConfig.tracks || [];
+
+            // Insure that we always have a sequence track
+            const pushSequenceTrack = tracks.filter(track => track.type === 'sequence').length === 0;
+            if (pushSequenceTrack) {
+                tracks.push({type: "sequence", order: defaultSequenceTrackOrder});
+            }
+
+            await this.loadTrackList(tracks);
+
+            await this.updateViews();
+
+            return this.genome
+        }
+
+        /**
+         * Called after a session load, search, pan (horizontal drag), or resize
+         *
+         * @param referenceFrameList
+         */
+        updateUIWithReferenceFrameList() {
+
+            const referenceFrameList = this.referenceFrameList;
+
+            this.updateLocusSearchWidget();
+
+            const isWGV = (this.isMultiLocusWholeGenomeView() || GenomeUtils.isWholeGenomeView(referenceFrameList[0].chr));
+
+            this.navbarManager.navbarDidResize(this.$navigation.width(), isWGV);
+
+            toggleTrackLabels(this.trackViews, this.trackLabelsVisible);
+
+            this.setCenterLineAndCenterLineButtonVisibility(!GenomeUtils.isWholeGenomeView(referenceFrameList[0].chr));
+
+        }
+
+        setTrackLabelVisibility(isVisible) {
+            toggleTrackLabels(this.trackViews, isVisible);
+        }
+
+        setROITableVisibility(isVisible) {
+            true === isVisible ? this.roiManager.presentTable() : this.roiManager.dismissTable();
+        }
+
+        // cursor guide
+        setCursorGuideVisibility(cursorGuideVisible) {
+
+            if (cursorGuideVisible) {
+                this.cursorGuide.show();
+            } else {
+                this.cursorGuide.hide();
+            }
+        }
+
+        setCustomCursorGuideMouseHandler(mouseHandler) {
+            this.cursorGuide.customMouseHandler = mouseHandler;
+        }
+
+        // center line
+        setCenterLineVisibility(isCenterLineVisible) {
+            for (let centerLine of this.centerLineList) {
+                if (true === isCenterLineVisible) {
+                    centerLine.show();
+                    centerLine.repaint();
+                } else {
+                    centerLine.hide();
+                }
+            }
+        }
+
+        setCenterLineAndCenterLineButtonVisibility(isCenterLineVisible) {
+
+            for (let centerLine of this.centerLineList) {
+                const isShown = isCenterLineVisible && centerLine.isVisible;
+                isShown ? centerLine.show() : centerLine.container.style.display = 'none';
+            }
+
+            const isShown = isCenterLineVisible && this.centerLineButton.isVisible;
+            isShown ? this.centerLineButton.show() : this.centerLineButton.button.style.display = 'none';
+
+        }
+
+        /**
+         * Public API function. Load a list of tracks.
+         *
+         * @param configList  Array of track configurations
+         * @returns {Promise<*>}  Promise for track objects
+         */
+        async loadTrackList(configList) {
+
+            const promises = [];
+            for (let config of configList) {
+                promises.push(this._loadTrack(config));
+            }
+
+            const loadedTracks = await Promise.all(promises);
+            const groupAutoscaleViews = this.trackViews.filter(function (trackView) {
+                return trackView.track.autoscaleGroup
+            });
+            if (groupAutoscaleViews.length > 0) {
+                this.updateViews();
+            }
+            return loadedTracks
+        }
+
+        /**
+         * Public API function
+         *
+         * Load an individual track.  If part of an autoscale group force a general update
+         *
+         * @param config  A track configuration
+         * @returns {Promise<*>}  Promise for track object
+         */
+        async loadTrack(config) {
+
+            const newTrack = this._loadTrack(config);
+
+            if (config.autoscaleGroup) {
+                // Await newTrack load and update all views
+                await newTrack;
+                this.updateViews();
+            }
+
+            return newTrack
+        }
+
+        /**
+         * Return a promise to load a track.   Private function used by loadTrack() and loadTrackList()
+         *
+         * @param config
+         * @returns {*}
+         */
+
+        async _loadTrack(config) {
+
+            // config might be json
+            if (isString$2(config)) {
+                config = JSON.parse(config);
+            }
+
+            try {
+
+                const newTrack = await this.createTrack(config);
+
+                if (undefined === newTrack) {
+                    return
+                }
+
+                // Set order field of track here.  Otherwise track order might get shuffled during asynchronous load
+                if (undefined === newTrack.order) {
+                    newTrack.order = this.trackViews.length;
+                }
+
+                const trackView = new TrackView(this, this.columnContainer, newTrack);
+                this.trackViews.push(trackView);
+                toggleTrackLabels(this.trackViews, this.trackLabelsVisible);
+                this.reorderTracks();
+                this.fireEvent('trackorderchanged', [this.getTrackOrder()]);
+
+                if (typeof newTrack.postInit === 'function') {
+                    try {
+                        trackView.startSpinner();
+                        await newTrack.postInit();
+                    } finally {
+                        trackView.stopSpinner();
+                    }
+                }
+
+                if (!newTrack.autoscaleGroup) {
+                    // Group autoscale will get updated later (as a group)
+                    if (config.sync) {
+                        await trackView.updateViews();
+                    } else {
+                        trackView.updateViews();
+                    }
+                }
+
+                if (typeof newTrack.hasSamples === 'function' && newTrack.hasSamples()) {
+                    if (this.config.showSampleNameButton !== false) {
+                        this.sampleNameControl.show();   // If not explicitly set
+                    }
+                }
+
+                return newTrack
+
+            } catch (error) {
+                const httpMessages =
+                    {
+                        "401": "Access unauthorized",
+                        "403": "Access forbidden",
+                        "404": "Not found"
+                    };
+                console.error(error);
+                let msg = error.message || error.error || error.toString();
+                if (httpMessages.hasOwnProperty(msg)) {
+                    msg = httpMessages[msg];
+                }
+                msg += (": " + config.url);
+                this.alert.present(new Error(msg), undefined);
+            }
+        }
+
+        /**
+         * Public API function - load a region of interest
+         *
+         * @param config  A "track" configuration object, or array of objects,  of type == "annotation" (bed, gff, etc)
+         *
+         * @returns {Promise<void>}
+         */
+        async loadROI(config) {
+            await this.roiManager.loadROI(config, this.genome);
+        }
+
+        /**
+         * Public API function - clear all regions of interest (ROI), including preloaded and user-defined ROIs
+         */
+        clearROIs() {
+            this.roiManager.clearROIs();
+        }
+
+        /**
+         * Public API function. Return a promise for the list of user-defined regions-of-interest
+         */
+        async getUserDefinedROIs() {
+
+            if (this.roiManager) {
+
+                const set = await this.roiManager.getUserDefinedROISet();
+                if (undefined === set) {
+                    return []
+                }
+
+                const featureHash = await set.getAllFeatures();
+                const featureList = [];
+                for (let value of Object.values(featureHash)) {
+                    featureList.push(...value);
+                }
+
+                return featureList
+
+            } else {
+                return []
+            }
+        }
+
+        getRulerTrackView() {
+            const list = this.trackViews.filter(({track}) => 'ruler' === track.id);
+            return list.length > 0 ? list[0] : undefined
+        }
+
+        /**
+         * Create a Track object.
+         * @param config
+         * @returns {Promise<*>}
+         */
+        async createTrack(config) {
+
+            // Resolve function and promise urls
+            let url = await resolveURL(config.url || config.fastaURL);
+            if (isString$2(url)) {
+                url = url.trim();
+            }
+
+            if (url) {
+                if (config.format) {
+                    config.format = config.format.toLowerCase();
+                } else if (config.fastaURL) {
+                    config.format = "fasta";  // by definition
+                } else {
+                    let filename = config.filename;
+                    if (!filename) {
+                        filename = await getFilename$1(url);
+                    }
+
+                    const format = inferFileFormat(filename);
+
+                    if ("tsv" === format) {
+                        config.format = await inferFileFormatFromHeader(config);
+                    } else if (format) {
+                        config.format = format;
+                    } else {
+                        if (config.sourceType === "htsget") {
+                            // Check for htsget URL.  This is a longshot
+                            await HtsgetReader.inferFormat(config);
+                        }
+                    }
+                }
+            }
+
+
+            let type = config.type ? config.type.toLowerCase() : undefined;
+
+            if (!type) {
+                type = inferTrackType(config);
+                if ("bedtype" === type) {
+                    // Bed files must be read to determine track type
+                    const featureSource = FeatureSource(config, this.genome);
+                    config._featureSource = featureSource;    // This is a temp variable, bit of a hack
+                    const trackType = await featureSource.trackType();
+                    if (trackType) {
+                        type = trackType;
+                    } else {
+                        type = "annotation";
+                    }
+                }
+                // Record in config to make type persistent in session
+                config.type = type;
+            }
+
+            // Set defaults if specified
+            if (this.trackDefaults && type) {
+                const settings = this.trackDefaults[type];
+                if (settings) {
+                    for (let property in settings) {
+                        if (settings.hasOwnProperty(property) && config[property] === undefined) {
+                            config[property] = settings[property];
+                        }
+                    }
+                }
+            }
+
+            const track = TrackFactory.getTrack(type, config, this);
+            if (undefined === track) {
+                this.alert.present(new Error(`Error creating track.  Could not determine track type for file: ${config.url || config}`), undefined);
+            } else {
+
+                if (config.roi && config.roi.length > 0) {
+                    track.roiSets = config.roi.map(r => new TrackROISet(r, this.genome));
+                }
+
+                return track
+            }
+        }
+
+
+        reorderTracks() {
+
+            this.trackViews.sort(function (a, b) {
+
+                const firstSortOrder = tv => {
+                    return 'ideogram' === tv.track.id ? 1 :
+                        'ruler' === tv.track.id ? 2 :
+                            3
+                };
+
+                const aOrder1 = firstSortOrder(a);
+                const bOrder1 = firstSortOrder(b);
+                if (aOrder1 === bOrder1) {
+                    const aOrder2 = a.track.order || 0;
+                    const bOrder2 = b.track.order || 0;
+                    return aOrder2 - bOrder2
+                } else {
+                    return aOrder1 - bOrder1
+                }
+            });
+
+            // discard current track order
+            for (let {axis, viewports, sampleNameViewport, outerScroll, dragHandle, gearContainer} of this.trackViews) {
+
+                axis.remove();
+
+                for (let {$viewport} of viewports) {
+                    $viewport.detach();
+                }
+
+                sampleNameViewport.viewport.remove();
+
+                outerScroll.remove();
+                dragHandle.remove();
+                gearContainer.remove();
+            }
+
+            // Reattach the divs to the dom in the correct order
+            const viewportColumns = this.columnContainer.querySelectorAll('.igv-column');
+
+            for (let {axis, viewports, sampleNameViewport, outerScroll, dragHandle, gearContainer} of this.trackViews) {
+
+                this.columnContainer.querySelector('.igv-axis-column').appendChild(axis);
+
+                for (let i = 0; i < viewportColumns.length; i++) {
+                    const {$viewport} = viewports[i];
+                    viewportColumns[i].appendChild($viewport.get(0));
+                }
+
+                this.columnContainer.querySelector('.igv-sample-name-column').appendChild(sampleNameViewport.viewport);
+
+                this.columnContainer.querySelector('.igv-scrollbar-column').appendChild(outerScroll);
+
+                this.columnContainer.querySelector('.igv-track-drag-column').appendChild(dragHandle);
+
+                this.columnContainer.querySelector('.igv-gear-menu-column').appendChild(gearContainer);
+            }
+
+        }
+
+        getTrackOrder() {
+            return this.trackViews.filter(tv => tv.track && tv.track.name).map(tv => tv.track.name)
+        }
+
+        /**
+         * NOTE: Public API function
+         *
+         * Remove all tracks matching the given name.  Usually this will be a single track, but there is no
+         * guarantee names are unique
+         *
+         * @param name
+         */
+        removeTrackByName(name) {
+            const copy = this.trackViews.slice();
+            for (let trackView of copy) {
+                if (name === trackView.track.name) {
+                    this.removeTrack(trackView.track);
+                }
+            }
+        }
+
+        /**
+         * NOTE: Public API function
+         *
+         * Remove the given track.  If it has already been removed this is a no-op.
+         *
+         * @param track
+         */
+        removeTrack(track) {
+            for (let trackView of this.trackViews) {
+                if (track === trackView.track) {
+                    this._removeTrack(trackView.track);
+                    break
+                }
+            }
+        }
+
+        _removeTrack(track) {
+            if (track.disposed) return
+            this.trackViews.splice(this.trackViews.indexOf(track.trackView), 1);
+            this.fireEvent('trackremoved', [track]);
+            this.fireEvent('trackorderchanged', [this.getTrackOrder()]);
+            if (track.trackView) {
+                track.trackView.dispose();
+            }
+        }
+
+        /**
+         * API function
+         */
+        removeAllTracks() {
+
+            const remainingTrackViews = [];
+
+            for (let trackView of this.trackViews) {
+
+                if (trackView.track.id !== 'ruler' && trackView.track.id !== 'ideogram') {
+                    this.fireEvent('trackremoved', [trackView.track]);
+                    trackView.dispose();
+                } else {
+                    remainingTrackViews.push(trackView);
+                }
+            }
+
+            this.trackViews = remainingTrackViews;
+        }
+
+        /**
+         *
+         * @param property
+         * @param value
+         * @returns {Array}  tracks with given property value.  e.g. findTracks("type", "annotation")
+         */
+        findTracks(property, value) {
+
+            let f = typeof property === 'function' ?
+                trackView => property(trackView.track) :
+                trackView => value === trackView.track[property];
+
+            return this.trackViews.filter(f).map(tv => tv.track)
+        }
+
+        /**
+         * Set the track height globally for all tracks.  (Note: Its not clear why this is useful).
+         * @param newHeight
+         */
+        setTrackHeight(newHeight) {
+
+            this.trackHeight = newHeight;
+
+            this.trackViews.forEach(function (trackView) {
+                trackView.setTrackHeight(newHeight);
+            });
+
+        }
+
+        /**
+         * API function to signal that this browser visibility has changed, e.g. from hiding/showing in a tab interface.
+         *
+         * @returns {Promise<void>}
+         */
+        async visibilityChange() {
+            this.layoutChange();
+        }
+
+        async layoutChange() {
+
+            const status = this.referenceFrameList.find(referenceFrame => referenceFrame.bpPerPixel < 0);
+
+            if (status) {
+                const viewportWidth = this.calculateViewportWidth(this.referenceFrameList.length);
+                for (let referenceFrame of this.referenceFrameList) {
+                    referenceFrame.bpPerPixel = (referenceFrame.end - referenceFrame.start) / viewportWidth;
+                }
+            }
+
+            if (this.referenceFrameList) {
+                const isWGV = this.isMultiLocusWholeGenomeView() || GenomeUtils.isWholeGenomeView(this.referenceFrameList[0].chr);
+                this.navbarManager.navbarDidResize(this.$navigation.width(), isWGV);
+            }
+
+            resize.call(this);
+            await this.updateViews();
+        }
+
+        async updateViews() {
+
+            const trackViews = this.trackViews;
+
+            this.updateLocusSearchWidget();
+
+            for (let centerGuide of this.centerLineList) {
+                centerGuide.repaint();
+            }
+
+            // Don't autoscale while dragging.
+            if (this.dragObject) {
+                for (let trackView of trackViews) {
+                    await trackView.updateViews();
+                }
+            } else {
+                // Group autoscale
+                const groupAutoscaleTracks = {};
+                const otherTracks = [];
+                for (let trackView of trackViews) {
+                    const group = trackView.track.autoscaleGroup;
+                    if (group) {
+                        var l = groupAutoscaleTracks[group];
+                        if (!l) {
+                            l = [];
+                            groupAutoscaleTracks[group] = l;
+                        }
+                        l.push(trackView);
+                    } else {
+                        otherTracks.push(trackView);
+                    }
+                }
+
+                if (Object.entries(groupAutoscaleTracks).length > 0) {
+
+                    const keys = Object.keys(groupAutoscaleTracks);
+                    for (let group of keys) {
+
+                        const groupTrackViews = groupAutoscaleTracks[group];
+                        const promises = [];
+
+                        for (let trackView of groupTrackViews) {
+                            promises.push(trackView.getInViewFeatures());
+                        }
+
+                        const featureArray = await Promise.all(promises);
+
+                        var allFeatures = [], dataRange;
+
+                        for (let features of featureArray) {
+                            allFeatures = allFeatures.concat(features);
+                        }
+                        dataRange = doAutoscale(allFeatures);
+
+                        const p = [];
+                        for (let trackView of groupTrackViews) {
+                            trackView.track.dataRange = dataRange;
+                            trackView.track.autoscale = false;
+                            p.push(trackView.updateViews());
+                        }
+                        await Promise.all(p);
+                    }
+
+                }
+
+                await Promise.all(otherTracks.map(tv => tv.updateViews()));
+                // for (let trackView of otherTracks) {
+                //     await trackView.updateViews(force);
+                // }
+            }
+
+        }
+
+        repaintViews() {
+            for (let trackView of this.trackViews) {
+                trackView.repaintViews();
+            }
+        }
+
+        updateLocusSearchWidget() {
+
+            if(!this.referenceFrameList) return
+            const referenceFrameList = this.referenceFrameList;
+
+            // Update end position of reference frames based on pixel widths.  This is hacky, but its been done here
+            // for a long time, although indirectly.
+            const width = this.calculateViewportWidth(this.referenceFrameList.length);
+            for (let referenceFrame of referenceFrameList) {
+                referenceFrame.end = referenceFrame.start + referenceFrame.bpPerPixel * width;
+            }
+
+            this.chromosomeSelectWidget.select.value = referenceFrameList.length === 1 ? this.referenceFrameList[0].chr : '';
+
+            const loc = this.referenceFrameList.map(rf => rf.getLocusString()).join(' ');
+            //const loc = this.referenceFrameList.length === 1 ?   this.referenceFrameList[0].getLocusString() : '';
+            this.$searchInput.val(loc);
+
+            this.fireEvent('locuschange', [this.referenceFrameList]);
+        }
+
+        calculateViewportWidth(columnCount) {
+
+            let {width} = this.columnContainer.getBoundingClientRect();
+
+            const sampleNameViewportWidth = this.getSampleNameViewportWidth();
+
+            width -= igv_axis_column_width + sampleNameViewportWidth + igv_scrollbar_outer_width + igv_track_manipulation_handle_width + igv_track_gear_menu_column_width;
+
+            width -= column_multi_locus_shim_width * (columnCount - 1);
+
+            return Math.floor(width / columnCount)
+        }
+
+        getCenterLineXOffset() {
+            let {width: columnContainerWidth} = this.columnContainer.getBoundingClientRect();
+            columnContainerWidth -= igv_axis_column_width + this.getSampleNameViewportWidth() + igv_scrollbar_outer_width + igv_track_manipulation_handle_width + igv_track_gear_menu_column_width;
+            return Math.floor(columnContainerWidth / 2 + igv_axis_column_width)
+        }
+
+        minimumBases() {
+            return this.config.minimumBases
+        }
+
+        // Zoom in by a factor of 2, keeping the same center location
+        zoomIn() {
+            this.zoomWithScaleFactor(0.5);
+        };
+
+        // Zoom out by a factor of 2, keeping the same center location if possible
+        zoomOut() {
+            this.zoomWithScaleFactor(2.0);
+        };
+
+        async zoomWithScaleFactor(scaleFactor, centerBPOrUndefined, referenceFrameOrUndefined) {
+
+            if(!this.referenceFrameList) return
+
+            const viewportWidth = this.calculateViewportWidth(this.referenceFrameList.length);
+
+            let referenceFrames = referenceFrameOrUndefined ? [referenceFrameOrUndefined] : this.referenceFrameList;
+
+            for (let referenceFrame of referenceFrames) {
+                referenceFrame.zoomWithScaleFactor(this, scaleFactor, viewportWidth, centerBPOrUndefined);
+            }
+        }
+
+        /**
+         * Add a new multi-locus panel for the specified region
+         * @param chr
+         * @param start
+         * @param end
+         * @param referenceFrameLeft - optional, if supplied new panel should be placed to the immediate right
+         */
+        async addMultiLocusPanel(chr, start, end, referenceFrameLeft) {
+
+            if(!this.referenceFrameList) return
+
+            // account for reduced viewport width as a result of adding right mate pair panel
+            const viewportWidth = this.calculateViewportWidth(1 + this.referenceFrameList.length);
+            const scaleFactor = this.calculateViewportWidth(this.referenceFrameList.length) / this.calculateViewportWidth(1 + this.referenceFrameList.length);
+            for (let refFrame of this.referenceFrameList) {
+                refFrame.bpPerPixel *= scaleFactor;
+            }
+
+            const bpp = (end - start) / viewportWidth;
+            const newReferenceFrame = new ReferenceFrame(this.genome, chr, start, end, bpp);
+            const indexLeft = referenceFrameLeft ? this.referenceFrameList.indexOf(referenceFrameLeft) : this.referenceFrameList.length - 1;
+            const indexRight = 1 + indexLeft;
+
+            // TODO -- this is really ugly
+            const {$viewport} = this.trackViews[0].viewports[indexLeft];
+            const viewportColumn = viewportColumnManager.insertAfter($viewport.get(0).parentElement);
+
+            if (indexRight === this.referenceFrameList.length) {
+                this.referenceFrameList.push(newReferenceFrame);
+                for (let trackView of this.trackViews) {
+                    const viewport = createViewport(trackView, viewportColumn, newReferenceFrame);
+                    trackView.viewports.push(viewport);
+                }
+            } else {
+                this.referenceFrameList.splice(indexRight, 0, newReferenceFrame);
+                for (let trackView of this.trackViews) {
+                    const viewport = createViewport(trackView, viewportColumn, newReferenceFrame);
+                    trackView.viewports.splice(indexRight, 0, viewport);
+                }
+            }
+
+
+            this.centerLineList = this.createCenterLineList(this.columnContainer);
+
+            resize.call(this);
+            await this.updateViews(true);
+        }
+
+        async removeMultiLocusPanel(referenceFrame) {
+
+            // find the $column corresponding to this referenceFrame and remove it
+            const index = this.referenceFrameList.indexOf(referenceFrame);
+            const {$viewport} = this.trackViews[0].viewports[index];
+            viewportColumnManager.removeColumnAtIndex(index, $viewport.parent().get(0));
+
+            for (let {viewports} of this.trackViews) {
+                viewports[index].dispose();
+                viewports.splice(index, 1);
+            }
+
+            this.referenceFrameList.splice(index, 1);
+
+            if (1 === this.referenceFrameList.length && this.getRulerTrackView()) {
+                for (let rulerViewport of this.getRulerTrackView().viewports) {
+                    rulerViewport.dismissLocusLabel();
+                }
+            }
+
+            const scaleFactor = this.calculateViewportWidth(1 + this.referenceFrameList.length) / this.calculateViewportWidth(this.referenceFrameList.length);
+
+            await this.rescaleForMultiLocus(scaleFactor);
+
+        }
+
+        /**
+         * Goto the locus represented by the selected referenceFrame, discarding all other panels
+         *
+         * @param referenceFrame
+         * @returns {Promise<void>}
+         */
+        async gotoMultilocusPanel(referenceFrame) {
+
+            const referenceFrameIndex = this.referenceFrameList.indexOf(referenceFrame);
+
+            // Remove columns for unselected panels
+            this.columnContainer.querySelectorAll('.igv-column').forEach((column, c) => {
+                if (c === referenceFrameIndex) ; else {
+                    column.remove();
+                }
+            });
+
+            // Remove all column shims
+            this.columnContainer.querySelectorAll('.igv-column-shim').forEach(shim => shim.remove());
+
+            // Discard viewports
+            for (let trackView of this.trackViews) {
+                const retain = trackView.viewports[referenceFrameIndex];
+                trackView.viewports.filter((viewport, i) => i !== referenceFrameIndex).forEach(viewport => viewport.dispose());
+                trackView.viewports = [retain];
+            }
+
+            const viewportWidth = this.calculateViewportWidth(1);
+            referenceFrame.bpPerPixel = (referenceFrame.end - referenceFrame.start) / viewportWidth;
+            this.referenceFrameList = [referenceFrame];
+
+            this.trackViews.forEach(({viewports}) => viewports.forEach(viewport => viewport.setWidth(viewportWidth)));
+
+            this.centerLineList = this.createCenterLineList(this.columnContainer);
+
+            this.updateUIWithReferenceFrameList();
+
+            await this.updateViews(true);
+
+        }
+
+        async rescaleForMultiLocus(scaleFactor) {
+
+            const viewportWidth = this.calculateViewportWidth(this.referenceFrameList.length);
+
+            for (let referenceFrame of this.referenceFrameList) {
+                referenceFrame.bpPerPixel *= scaleFactor;
+            }
+
+            for (let {viewports} of this.trackViews) {
+
+                for (let viewport of viewports) {
+                    viewport.setWidth(viewportWidth);
+                }
+            }
+
+            this.centerLineList = this.createCenterLineList(this.columnContainer);
+
+            this.updateUIWithReferenceFrameList();
+
+            await this.updateViews();
+
+        }
+
+        /**
+         * @deprecated  This is a deprecated method with no known usages.  To be removed in a future release.
+         */
+        async goto(chr, start, end) {
+            await this.search(chr + ":" + start + "-" + end);
+        }
+
+        /**
+
+         * Search for the locus string -- this function is called from various igv.js GUI elements, and is not part of the
+         * API.  Wraps ```search``` and presents an error dialog if false.
+         *
+         * @param string
+         * @param init
+         * @returns {Promise<void>}
+         */
+        async doSearch(string, init) {
+            const success = await this.search(string, init);
+            if (!success) {
+                this.alert.present(new Error(`Unrecognized locus: <b> ${string} </b>`));
+            }
+            return success
+        }
+
+
+        /**
+         * Search for the locus string
+         * NOTE: This is part of the API
+         * @param string
+         * @param init  true if called during browser initialization
+         * @returns {Promise<boolean>}  true if found, false if not
+         */
+        async search(string, init) {
+
+            const loci = await search(this, string);
+
+            if (loci && loci.length > 0) {
+
+                // create reference frame list based on search loci
+                this.referenceFrameList = createReferenceFrameList(loci, this.genome, this.flanking, this.minimumBases(), this.calculateViewportWidth(loci.length), this.isSoftclipped());
+
+                // discard viewport DOM elements
+                for (let trackView of this.trackViews) {
+                    // empty axis column, viewport columns, sampleName column, scroll column, drag column, gear column
+                    trackView.removeDOMFromColumnContainer();
+                }
+
+                // discard ONLY viewport columns
+                this.columnContainer.querySelectorAll('.igv-column-shim, .igv-column').forEach(el => el.remove());
+
+                // Insert viewport columns preceding the sample-name column
+                viewportColumnManager.insertBefore(this.columnContainer.querySelector('.igv-sample-name-column'), this.referenceFrameList.length);
+
+                this.centerLineList = this.createCenterLineList(this.columnContainer);
+
+                // Populate the columns
+                for (let trackView of this.trackViews) {
+                    trackView.addDOMToColumnContainer(this, this.columnContainer, this.referenceFrameList);
+                }
+
+                this.updateUIWithReferenceFrameList();
+
+                if (!init) {
+                    await this.updateViews();
+                }
+                return true
+            } else {
+                return false
+            }
+        }
+
+        async loadSampleInformation(url) {
+            var name = url;
+            if (isFile(url)) {
+                name = url.name;
+            }
+            var ext = name.substr(name.lastIndexOf('.') + 1);
+            if (ext === 'fam') {
+                this.sampleInformation = await loadPlinkFile(url);
+            }
+        };
+
+    // EVENTS
+
+        on(eventName, fn) {
+            if (!this.eventHandlers[eventName]) {
+                this.eventHandlers[eventName] = [];
+            }
+            this.eventHandlers[eventName].push(fn);
+        };
+
+        /**
+         * @deprecated use off()
+         * @param eventName
+         * @param fn
+         */
+        un(eventName, fn) {
+            this.off(eventName, fn);
+        };
+
+        off(eventName, fn) {
+
+            if (!eventName) {
+                this.eventHandlers = {};   // Remove all event handlers
+            } else if (!fn) {
+                this.eventHandlers[eventName] = []; // Remove all eventhandlers matching name
+            } else {
+                // Remove specific event handler
+                const handlers = this.eventHandlers[eventName];
+                if (!handlers || handlers.length === 0) {
+                    console.warn("No handlers to remove for event: " + eventName);
+                } else {
+                    const callbackIndex = handlers.indexOf(fn);
+                    if (callbackIndex !== -1) {
+                        this.eventHandlers[eventName].splice(callbackIndex, 1);
+                    }
+                }
+            }
+        }
+
+        fireEvent(eventName, args, thisObj) {
+
+            const handlers = this.eventHandlers[eventName];
+            if (undefined === handlers || handlers.length === 0) {
+                return undefined
+            }
+
+            const scope = thisObj || window;
+            const results = handlers.map(function (event) {
+                return event.apply(scope, args)
+            });
+
+            return results[0]
+        }
+
+        dispose() {
+            this.removeMouseHandlers();
+            for (let trackView of this.trackViews) {
+                trackView.dispose();
+            }
+        }
+
+        /**
+         * Return a json-like object (note not a json string) representing the current state.
+         *
+         */
+        toJSON() {
+
+            const json = {
+                "version": version()
+            };
+
+            if (this.showSampleNames !== undefined) {
+                json['showSampleNames'] = this.showSampleNames;
+            }
+            if (this.sampleNameViewportWidth !== defaultSampleNameViewportWidth) {
+                json['sampleNameViewportWidth'] = this.sampleNameViewportWidth;
+            }
+
+            json["reference"] = this.genome.toJSON();
+            if (json.reference.fastaURL instanceof File) {   // Test specifically for File.  Other types of File-like objects might be savable) {
+                throw new Error(`Error. Sessions cannot include local file references ${json.reference.fastaURL.name}.`)
+            } else if (json.reference.indexURL instanceof File) {   // Test specifically for File.  Other types of File-like objects might be savable) {
+                throw new Error(`Error. Sessions cannot include local file references ${json.reference.indexURL.name}.`)
+            }
+
+            // Build locus array (multi-locus view).  Use the first track to extract the loci, any track could be used.
+            const locus = [];
+            const gtexSelections = {};
+            let hasGtexSelections = false;
+            let anyTrackView = this.trackViews[0];
+            for (let {referenceFrame} of anyTrackView.viewports) {
+                const locusString = referenceFrame.getLocusString();
+                locus.push(locusString);
+                if (referenceFrame.selection) {
+                    const selection = {
+                        gene: referenceFrame.selection.gene,
+                        snp: referenceFrame.selection.snp
+                    };
+                    gtexSelections[locusString] = selection;
+                    hasGtexSelections = true;
+                }
+            }
+            json["locus"] = locus.length === 1 ? locus[0] : locus;
+            if (hasGtexSelections) {
+                json["gtexSelections"] = gtexSelections;
+            }
+
+            json["roi"] = this.roiManager.toJSON();
+
+            const trackJson = [];
+            const errors = [];
+            for (let {track} of this.trackViews) {
+                try {
+                    let config;
+                    if (typeof track.getState === "function") {
+                        config = track.getState();
+                    } else {
+                        config = track.config;
+                    }
+
+                    if (config) {
+                        // null backpointer to browser
+                        if (config.browser) {
+                            delete config.browser;
+                        }
+                        config.order = track.order; //order++;
+                        trackJson.push(config);
+                    }
+                } catch (e) {
+                    console.error(`Track: ${track.name}: ${e}`);
+                    errors.push(`Track: ${track.name}: ${e}`);
+                }
+            }
+
+            if (errors.length > 0) {
+                let n = 1;
+                let message = 'Errors encountered saving session: </br>';
+                for (let e of errors) {
+                    message += ` (${n++}) ${e.toString()} <br/>`;
+                }
+                throw Error(message)
+            }
+
+
+            json["tracks"] = trackJson;
+
+            return json        // This is an object, not a json string
+
+        }
+
+        compressedSession() {
+            const json = JSON.stringify(this.toJSON());
+            return compressString(json)
+        }
+
+        sessionURL() {
+            const path = window.location.href.slice();
+            const idx = path.indexOf("?");
+            const surl = (idx > 0 ? path.substring(0, idx) : path) + "?sessionURL=blob:" + this.compressedSession();
+            return surl
+        }
+
+        /**
+         * Record a mouse click on a specific viewport.   This might be the start of a drag operation.   Dragging
+         * (panning) is handled here so that the mouse can move out of a specific viewport (e.g. stray into another
+         * track) without halting the drag.
+         *
+         * @param e
+         * @param viewport
+         */
+        mouseDownOnViewport(e, viewport) {
+
+            var coords;
+            coords = domUtils.pageCoordinates(e);
+            this.vpMouseDown = {
+                viewport,
+                lastMouseX: coords.x,
+                mouseDownX: coords.x,
+                lastMouseY: coords.y,
+                mouseDownY: coords.y,
+                referenceFrame: viewport.referenceFrame
+            };
+        };
+
+        cancelTrackPan() {
+
+            const dragObject = this.dragObject;
+            this.dragObject = undefined;
+            this.isScrolling = false;
+            this.vpMouseDown = undefined;
+
+            if (dragObject && dragObject.viewport.referenceFrame.start !== dragObject.start) {
+                this.updateViews();
+                this.fireEvent('trackdragend');
+            }
+        }
+
+        isTrackPanning() {
+            return this.dragObject
+        }
+
+        isSoftclipped() {
+            const result = this.trackViews.find(tv => tv.track.showSoftClips === true);
+            return result !== undefined
+        }
+
+
+        /**
+         * Track drag here refers to vertical dragging to reorder tracks, not horizontal panning.
+         *
+         * @param trackView
+         */
+        startTrackDrag(trackView) {
+
+            this.dragTrack = trackView;
+
+        }
+
+        /**
+         * Track drag here refers to vertical dragging to reorder tracks, not horizontal panning.
+         *
+         * @param dragDestination
+         */
+        updateTrackDrag(dragDestination) {
+
+            if (dragDestination && this.dragTrack) {
+
+                const dragged = this.dragTrack;
+                const indexDestination = this.trackViews.indexOf(dragDestination);
+                const indexDragged = this.trackViews.indexOf(dragged);
+                const trackViews = this.trackViews;
+
+                trackViews[indexDestination] = dragged;
+                trackViews[indexDragged] = dragDestination;
+
+                const newOrder = this.trackViews[indexDestination].track.order;
+                this.trackViews[indexDragged].track.order = newOrder;
+
+                const nTracks = trackViews.length;
+                let lastOrder = newOrder;
+
+                if (indexDestination < indexDragged) {
+                    // Displace tracks below
+
+                    for (let i = indexDestination + 1; i < nTracks; i++) {
+                        const track = trackViews[i].track;
+                        if (track.order <= lastOrder) {
+                            track.order = Math.min(Number.MAX_SAFE_INTEGER, lastOrder + 1);
+                            lastOrder = track.order;
+                        } else {
+                            break
+                        }
+                    }
+                } else {
+                    // Displace tracks above.  First track (index 0) is "ruler"
+                    for (let i = indexDestination - 1; i > 0; i--) {
+                        const track = trackViews[i].track;
+                        if (track.order >= lastOrder) {
+                            track.order = Math.max(-Number.MAX_SAFE_INTEGER, lastOrder - 1);
+                            lastOrder = track.order;
+                        } else {
+                            break
+                        }
+                    }
+                }
+                this.reorderTracks();
+            }
+        }
+
+        /**
+         * End vertical dragging of tracks (i.e. track re-order, not horizontal panning of data)
+         */
+        endTrackDrag() {
+            if (this.dragTrack) {
+                // this.dragTrack.$trackDragScrim.hide();
+                this.dragTrack = undefined;
+                this.fireEvent('trackorderchanged', [this.getTrackOrder()]);
+            } else {
+                this.dragTrack = undefined;
+            }
+        }
+
+        /**
+         * Mouse handlers to support drag (pan)
+         */
+        addMouseHandlers() {
+            this.addWindowResizeHandler();
+            this.addRootMouseUpHandler();
+            this.addRootMouseLeaveHandler();
+            this.addColumnContainerEventHandlers();
+        }
+
+        removeMouseHandlers() {
+            this.removeWindowResizeHandler();
+            this.removeRootMouseUpHandler();
+            this.removeRootMouseLeaveHandler();
+            this.removeColumnContainerEventHandlers();
+        }
+
+        addWindowResizeHandler() {
+            // Create a copy of the prototype "resize" function bound to this instance.  Neccessary to support removing.
+            this.boundWindowResizeHandler = resize.bind(this);
+            window.addEventListener('resize', this.boundWindowResizeHandler);
+        }
+
+        removeWindowResizeHandler() {
+            window.removeEventListener('resize', this.boundWindowResizeHandler);
+        }
+
+        addRootMouseUpHandler() {
+            this.boundRootMouseUpHandler = mouseUpOrLeave.bind(this);
+            this.root.addEventListener('mouseup', this.boundRootMouseUpHandler);
+        }
+
+        removeRootMouseUpHandler() {
+            this.root.removeEventListener('mouseup', this.boundRootMouseUpHandler);
+        }
+
+        addRootMouseLeaveHandler() {
+            this.boundRootMouseLeaveHandler = mouseUpOrLeave.bind(this);
+            this.root.addEventListener('mouseleave', this.boundRootMouseLeaveHandler);
+        }
+
+        removeRootMouseLeaveHandler() {
+            this.root.removeEventListener('mouseleave', this.boundRootMouseLeaveHandler);
+        }
+
+        addColumnContainerEventHandlers() {
+            this.boundColumnContainerMouseMoveHandler = handleMouseMove.bind(this);
+            this.boundColumnContainerTouchMoveHandler = handleMouseMove.bind(this);
+            this.boundColumnContainerMouseLeaveHandler = mouseUpOrLeave.bind(this);
+            this.boundColumnContainerMouseUpHandler = mouseUpOrLeave.bind(this);
+            this.boundColumnContainerTouchEndHandler = mouseUpOrLeave.bind(this);
+
+            this.columnContainer.addEventListener('mousemove', this.boundColumnContainerMouseMoveHandler);
+            this.columnContainer.addEventListener('touchmove', this.boundColumnContainerTouchMoveHandler);
+
+            this.columnContainer.addEventListener('mouseleave', this.boundColumnContainerMouseLeaveHandler);
+
+            this.columnContainer.addEventListener('mouseup', this.boundColumnContainerMouseUpHandler);
+            this.columnContainer.addEventListener('touchend', this.boundColumnContainerTouchEndHandler);
+        }
+
+        removeColumnContainerEventHandlers() {
+            this.columnContainer.removeEventListener('mousemove', this.boundColumnContainerMouseMoveHandler);
+            this.columnContainer.removeEventListener('touchmove', this.boundColumnContainerTouchMoveHandler);
+
+            this.columnContainer.removeEventListener('mouseleave', this.boundColumnContainerMouseLeaveHandler);
+
+            this.columnContainer.removeEventListener('mouseup', this.boundColumnContainerMouseUpHandler);
+            this.columnContainer.removeEventListener('touchend', this.boundColumnContainerTouchEndHandler);
+        }
+
+        static uncompressSession(url) {
+
+            let bytes;
+            if (url.indexOf('/gzip;base64') > 0) {
+                //Proper dataURI
+                bytes = decodeDataURI$1(url);
+                let json = '';
+                for (let b of bytes) {
+                    json += String.fromCharCode(b);
+                }
+                return json
+            } else {
+
+                let enc = url.substring(5);
+                return uncompressString(enc)
+            }
+        }
+
+        createCircularView(container, show) {
+            show = show === true;   // convert undefined to boolean
+            this.circularView = createCircularView(container, this);
+            this.circularViewControl = new CircularViewControl(this.$toggle_button_container.get(0), this);
+            this.circularView.setAssembly({
+                name: this.genome.id,
+                id: this.genome.id,
+                chromosomes: makeCircViewChromosomes(this.genome)
+            });
+            this.circularViewVisible = show;
+            return this.circularView
+        }
+
+        get circularViewVisible() {
+            return this.circularView !== undefined && this.circularView.visible
+        }
+
+        set circularViewVisible(isVisible) {
+            if (this.circularView) {
+                this.circularView.visible = isVisible;
+                this.circularViewControl.setState(isVisible);
+            }
+        }
+    }
+
+    /**
+     * Function called win window is resized, or visibility changed (e.g. "show" from a tab).  This is a function rather
+     * than class method because it needs to be copied and bound to specific instances of browser to support listener
+     * removal
+     *
+     * @returns {Promise<void>}
+     */
+    async function resize() {
+
+        if(!this.referenceFrameList) return
+
+        const viewportWidth = this.calculateViewportWidth(this.referenceFrameList.length);
+
+        for (let referenceFrame of this.referenceFrameList) {
+
+            const index = this.referenceFrameList.indexOf(referenceFrame);
+
+            const {chr, genome} = referenceFrame;
+
+            const {bpLength} = genome.getChromosome(referenceFrame.chr);
+
+            const viewportWidthBP = referenceFrame.toBP(viewportWidth);
+
+            // viewportWidthBP > bpLength occurs when locus is full chromosome and user widens browser
+            if (GenomeUtils.isWholeGenomeView(chr) || viewportWidthBP > bpLength) {
+                // console.log(`${ Date.now() } Recalc referenceFrame(${ index }) bpp. viewport ${ StringUtils.numberFormatter(viewportWidthBP) } > ${ StringUtils.numberFormatter(bpLength) }.`)
+                referenceFrame.bpPerPixel = bpLength / viewportWidth;
+            } else {
+                // console.log(`${ Date.now() } Recalc referenceFrame(${ index }) end.`)
+                referenceFrame.end = referenceFrame.start + referenceFrame.toBP(viewportWidth);
+            }
+
+            for (let {viewports} of this.trackViews) {
+                viewports[index].setWidth(viewportWidth);
+            }
+
+        }
+
+        this.updateUIWithReferenceFrameList();
+
+        //TODO -- update view only if needed.  Reducing size never needed.  Increasing size maybe
+
+        await this.updateViews(true);
+    }
+
+
+    function handleMouseMove(e) {
+
+        e.preventDefault();
+
+        const {x, y} = domUtils.pageCoordinates(e);
+
+        if (this.vpMouseDown) {
+
+            const {viewport, referenceFrame} = this.vpMouseDown;
+
+            // Determine direction,  true == horizontal
+            const horizontal = Math.abs((x - this.vpMouseDown.mouseDownX)) > Math.abs((y - this.vpMouseDown.mouseDownY));
+
+            if (!this.dragObject && !this.isScrolling) {
+                if (horizontal) {
+                    if (this.vpMouseDown.mouseDownX && Math.abs(x - this.vpMouseDown.mouseDownX) > this.constants.dragThreshold) {
+                        this.dragObject = {viewport, start: referenceFrame.start};
+                    }
+                } else {
+                    if (this.vpMouseDown.mouseDownY &&
+                        Math.abs(y - this.vpMouseDown.mouseDownY) > this.constants.scrollThreshold) {
+                        // Scrolling => dragging track vertically
+                        this.isScrolling = true;
+                        const viewportHeight = viewport.$viewport.height();
+                        const contentHeight = viewport.trackView.maxViewportContentHeight();
+                        this.vpMouseDown.r = viewportHeight / contentHeight;
+                    }
+                }
+            }
+
+            if (this.dragObject) {
+                const clampDrag = !this.isSoftclipped();
+                let deltaX = this.vpMouseDown.lastMouseX - x;
+                const viewChanged = referenceFrame.shiftPixels(deltaX, viewport.$viewport.width(), clampDrag);
+                if (viewChanged) {
+                    this.updateViews();
+                }
+                this.fireEvent('trackdrag');
+            }
+
+
+            if (this.isScrolling) {
+                const delta = this.vpMouseDown.r * (this.vpMouseDown.lastMouseY - y);
+                viewport.trackView.moveScroller(delta);
+            }
+
+
+            this.vpMouseDown.lastMouseX = x;
+            this.vpMouseDown.lastMouseY = y;
+        }
+    }
+
+    function mouseUpOrLeave(e) {
+        this.cancelTrackPan();
+        this.endTrackDrag();
+    }
+
+
+    function getInitialLocus(locus, genome) {
+        if (locus) {
+            return Array.isArray(locus) ? locus.join(' ') : locus
+        } else {
+            return genome.getHomeChromosomeName()
+        }
+    }
+
+    function logo() {
+
+        return $$1(
+            '<svg width="690px" height="324px" viewBox="0 0 690 324" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink">' +
+            '<title>IGV</title>' +
+            '<g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd">' +
+            '<g id="IGV" fill="#666666">' +
+            '<polygon id="Path" points="379.54574 8.00169252 455.581247 8.00169252 515.564813 188.87244 532.884012 253.529506 537.108207 253.529506 554.849825 188.87244 614.833392 8.00169252 689.60164 8.00169252 582.729511 320.722144 486.840288 320.722144"></polygon>' +
+            '<path d="M261.482414,323.793286 C207.975678,323.793286 168.339046,310.552102 142.571329,284.069337 C116.803612,257.586572 103.919946,217.158702 103.919946,162.784513 C103.919946,108.410325 117.437235,67.8415913 144.472217,41.0770945 C171.507199,14.3125977 212.903894,0.930550071 268.663545,0.930550071 C283.025879,0.930550071 298.232828,1.84616386 314.284849,3.6774189 C330.33687,5.50867394 344.839793,7.97378798 357.794056,11.072835 L357.794056,68.968378 C339.48912,65.869331 323.578145,63.5450806 310.060654,61.9955571 C296.543163,60.4460336 284.574731,59.6712835 274.154998,59.6712835 C255.850062,59.6712835 240.502308,61.4320792 228.111274,64.9537236 C215.720241,68.4753679 205.793482,74.2507779 198.330701,82.2801269 C190.867919,90.309476 185.587729,100.87425 182.48997,113.974767 C179.392212,127.075284 177.843356,143.345037 177.843356,162.784513 C177.843356,181.942258 179.251407,198.000716 182.067551,210.960367 C184.883695,223.920018 189.671068,234.41436 196.429813,242.443709 C203.188559,250.473058 212.059279,256.178037 223.042241,259.558815 C234.025202,262.939594 247.683295,264.629958 264.01693,264.629958 C268.241146,264.629958 273.098922,264.489094 278.590403,264.207362 C284.081883,263.925631 289.643684,263.50304 295.275972,262.939577 L295.275972,159.826347 L361.595831,159.826347 L361.595831,308.579859 C344.698967,313.087564 327.239137,316.750019 309.215815,319.567334 C291.192494,322.38465 275.281519,323.793286 261.482414,323.793286 L261.482414,323.793286 L261.482414,323.793286 Z" id="Path"></path>;' +
+            '<polygon id="Path" points="0.81355666 5.00169252 73.0472883 5.00169252 73.0472883 317.722144 0.81355666 317.722144"></polygon>' +
+            '</g> </g> </svg>'
+        )
+    }
+
+    function toggleTrackLabels(trackViews, isVisible) {
+
+        for (let {viewports} of trackViews) {
+            for (let viewport of viewports) {
+                if (viewport.$trackLabel) {
+                    if (0 === viewports.indexOf(viewport) && true === isVisible) {
+                        viewport.$trackLabel.show();
+                    } else {
+                        viewport.$trackLabel.hide();
+                    }
+                }
+            }
+        }
+    }
+
+    /*
+     * The MIT License (MIT)
+     *
+     * Copyright (c) 2014 Broad Institute
+     *
+     * Permission is hereby granted, free of charge, to any person obtaining a copy
+     * of this software and associated documentation files (the "Software"), to deal
+     * in the Software without restriction, including without limitation the rights
+     * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+     * copies of the Software, and to permit persons to whom the Software is
+     * furnished to do so, subject to the following conditions:
+     *
+     * The above copyright notice and this permission notice shall be included in
+     * all copies or substantial portions of the Software.
+     *
+     *
+     * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+     * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+     * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+     * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+     * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+     * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+     * THE SOFTWARE.
+     */
+
+    let allBrowsers = [];
+
+    /**
+     * Create an igv.browser instance.  This object defines the public API for interacting with the genome browser.
+     *
+     * @param parentDiv - DOM tree root
+     * @param config - configuration options.
+     *
+     */
+    async function createBrowser(parentDiv, config) {
+
+        if (undefined === config) config = {};
+
+        // Initialize pre-defined genomes.  The genome list is shared among all browser instances
+        if (!GenomeUtils.KNOWN_GENOMES) {
+            await GenomeUtils.initializeGenomes(config);
+        }
+
+        setDefaults(config);
+
+        if (config.queryParametersSupported) {
+            extractQuery(config);
+        }
+        if (config.apiKey) {
+            igvxhr.setApiKey(config.apiKey);
+        }
+        if (config.oauthToken) {
+            igvxhr.setOauthToken(config.oauthToken);
+        }
+        if (config.clientId && (!isInitialized())) {
+            await init$1({
+                clientId: config.clientId,
+                apiKey: config.apiKey,
+                scope: 'https://www.googleapis.com/auth/userinfo.profile'
+            });
+        }
+
+        // Create browser
+        const browser = new Browser(config, parentDiv);
+        allBrowsers.push(browser);
+
+        // Load initial session
+        if (config.sessionURL) {
+            await browser.loadSession({
+                url: config.sessionURL
+            });
+        } else {
+            await browser.loadSessionObject(config);
+        }
+
+        browser.navbarManager.navbarDidResize(browser.$navigation.width());
+
+        return browser
+
+    }
+
+    function removeBrowser(browser) {
+        browser.dispose();
+        browser.root.remove();
+        allBrowsers = allBrowsers.filter(item => item !== browser);
+    }
+
+    function removeAllBrowsers() {
+        for (let browser of allBrowsers) {
+            browser.dispose();
+            browser.root.remove();
+        }
+        allBrowsers = [];
+    }
+
+    /**
+     * This function provided so clients can inform igv of a visibility change, typically when an igv instance is
+     * made visible from a tab, accordion, or similar widget.
+     */
+    async function visibilityChange() {
+        for (let browser of allBrowsers) {
+            await browser.visibilityChange();
+        }
+    }
+
+    function setDefaults(config) {
+
+        if (undefined === config.minimumBases) {
+            config.minimumBases = 40;
+        }
+
+        if (undefined === config.showIdeogram) {
+            config.showIdeogram = true;
+        }
+
+        if (undefined === config.showCircularView) {
+            config.showCircularView = false;
+        }
+
+        if (undefined === config.showCircularViewButton) {
+            config.showCircularViewButton = false;
+        }
+
+        if (undefined === config.showTrackLabelButton) {
+            config.showTrackLabelButton = true;
+        }
+
+        if (undefined === config.showTrackLabels) {
+            config.showTrackLabels = true;
+        }
+
+        if (undefined === config.showROITableButton) {
+            config.showROITableButton = false;
+        }
+
+        if (undefined === config.showROITable) {
+            config.showROITable = false;
+        }
+
+        if (undefined === config.showCursorTrackingGuideButton) {
+            config.showCursorTrackingGuideButton = true;
+        }
+
+
+        if (undefined === config.showCursorGuide) {
+            config.showCursorGuide = config.showCursorTrackingGuide || false;   // showCursorTrackingGuide is a synonym
+        }
+
+        if (undefined === config.showCenterGuideButton) {
+            config.showCenterGuideButton = true;
+        }
+
+        if (undefined === config.showCenterGuide) {
+            config.showCenterGuide = false;
+        }
+
+        if (undefined === config.showSampleNames) {
+            config.showSampleNames = false;
+        }
+
+        if (undefined === config.showSVGButton) {
+            config.showSVGButton = true;
+        }
+
+        if (config.showControls === undefined) {
+            config.showControls = true;
+        }
+
+        if (config.showNavigation === undefined) {
+            config.showNavigation = true;
+        }
+
+        if (config.showRuler === undefined) {
+            config.showRuler = true;
+        }
+
+        if (config.flanking === undefined) {
+            config.flanking = 1000;
+        }
+
+        if (config.pairsSupported === undefined) {
+            config.pairsSupported = true;
+        }
+
+        if (!config.tracks) {
+            config.tracks = [];
+        }
+
+    }
+
+
+    function extractQuery(config) {
+
+        var i1, i2, i, j, s, query, tokens, uri, key, value;
+
+        uri = window.location.href;
+
+        query = {};
+        i1 = uri.indexOf("?");
+        i2 = uri.lastIndexOf("#");
+
+        let files;
+        let indexURLs;
+        let names;
+        if (i1 >= 0) {
+            if (i2 < 0) i2 = uri.length;
+            for (i = i1 + 1; i < i2;) {
+                j = uri.indexOf("&", i);
+                if (j < 0) j = i2;
+
+                s = uri.substring(i, j);
+                tokens = s.split("=", 2);
+
+                if (tokens.length === 2) {
+                    key = tokens[0];
+                    value = decodeURIComponent(tokens[1]);
+
+                    if ('file' === key) {
+                        // IGV desktop style file parameter
+                        files = value.split(',');
+                    } else if ('index' === key) {
+                        // IGV desktop style index parameter
+                        indexURLs = value.split(',');
+                    } else if ('name' === key) {
+                        // IGV desktop style index parameter
+                        names = value.split(',');
+                    } else if ('genome' === key && ((value.startsWith("https://") || value.startsWith("http://")) && !value.endsWith(".json"))) {
+                        // IGV desktop compatibility -- assuming url to fasta
+                        config['reference'] = {
+                            fastaURL: value,
+                            indexURL: value + ".fai"
+                        };
+                    } else {
+                        config[key] = value;
+                    }
+                    i = j + 1;
+                } else {
+                    i++;
+                }
+            }
+        }
+
+        if (files) {
+
+            if (!config.tracks)
+                config.tracks = [];
+            for (let i = 0; i < files.length; i++) {
+
+                if (files[i].endsWith(".xml") || files[i].endsWith(".json")) {
+                    config.sessionURL = files[i];
+                    break
+                }
+
+                const trackConfig = {url: files[i]};
+                if (indexURLs && indexURLs.length > i) {
+                    trackConfig.indexURL = indexURLs[i];
+                }
+                if (names && names.length > i) {
+                    trackConfig.name = names[i];
+                }
+                config.tracks.push(trackConfig);
+            }
+        }
+
+        return query
+    }
+
+
+    async function createTrack(config, browser) {
+        return await Browser.prototype.createTrack.call(browser, config)
+    }
+
+    function embedCSS() {
+
+        var css = '.igv-navbar {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  box-sizing: border-box;\n  width: 100%;\n  color: #444;\n  font-size: 12px;\n  font-family: \"Open Sans\", sans-serif;\n  font-weight: 400;\n  line-height: 32px;\n  padding-left: 8px;\n  padding-right: 8px;\n  margin-top: 2px;\n  margin-bottom: 6px;\n  height: 32px;\n  border-style: solid;\n  border-radius: 3px;\n  border-width: thin;\n  border-color: #bfbfbf;\n  background-color: #f3f3f3;\n}\n.igv-navbar .igv-navbar-left-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  height: 32px;\n  line-height: 32px;\n}\n.igv-navbar .igv-navbar-left-container .igv-logo {\n  width: 34px;\n  height: 32px;\n  margin-right: 8px;\n}\n.igv-navbar .igv-navbar-left-container .igv-current-genome {\n  height: 32px;\n  margin-left: 4px;\n  margin-right: 4px;\n  user-select: none;\n  line-height: 32px;\n  vertical-align: middle;\n  text-align: center;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  height: 100%;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-chromosome-select-widget-container {\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n  height: 100%;\n  width: 125px;\n  margin-right: 4px;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-chromosome-select-widget-container select {\n  display: block;\n  cursor: pointer;\n  width: 100px;\n  height: 75%;\n  outline: none;\n  font-size: 12px;\n  font-family: \"Open Sans\", sans-serif;\n  font-weight: 400;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  margin-left: 8px;\n  height: 22px;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n  width: 210px;\n  height: 22px;\n  line-height: 22px;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container input.igv-search-input {\n  cursor: text;\n  width: 85%;\n  height: 22px;\n  line-height: 22px;\n  font-size: 12px;\n  font-family: \"Open Sans\", sans-serif;\n  font-weight: 400;\n  text-align: left;\n  padding-left: 8px;\n  margin-right: 8px;\n  outline: none;\n  border-style: solid;\n  border-radius: 3px;\n  border-width: thin;\n  border-color: #bfbfbf;\n  background-color: white;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container .igv-search-icon-container {\n  cursor: pointer;\n  height: 16px;\n  width: 16px;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-windowsize-panel-container {\n  margin-left: 4px;\n  user-select: none;\n}\n.igv-navbar .igv-navbar-right-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  height: 32px;\n  line-height: 32px;\n}\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  height: 100%;\n}\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container div {\n  margin-left: 0;\n  margin-right: 4px;\n}\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container div:last-child {\n  margin-left: 0;\n  margin-right: 0;\n}\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container-750 {\n  display: none;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget {\n  color: #737373;\n  font-size: 18px;\n  height: 32px;\n  line-height: 32px;\n  margin-left: 8px;\n  user-select: none;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div {\n  cursor: pointer;\n  margin-left: unset;\n  margin-right: unset;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:first-child {\n  height: 24px;\n  width: 24px;\n  margin-left: unset;\n  margin-right: 8px;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:last-child {\n  height: 24px;\n  width: 24px;\n  margin-left: 8px;\n  margin-right: unset;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:nth-child(even) {\n  display: block;\n  height: fit-content;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget input {\n  display: block;\n  width: 125px;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget svg {\n  display: block;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 {\n  color: #737373;\n  font-size: 18px;\n  height: 32px;\n  line-height: 32px;\n  margin-left: 8px;\n  user-select: none;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div {\n  cursor: pointer;\n  margin-left: unset;\n  margin-right: unset;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:first-child {\n  height: 24px;\n  width: 24px;\n  margin-left: unset;\n  margin-right: 8px;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:last-child {\n  height: 24px;\n  width: 24px;\n  margin-left: 8px;\n  margin-right: unset;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:nth-child(even) {\n  width: 0;\n  height: 0;\n  display: none;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 input {\n  width: 0;\n  height: 0;\n  display: none;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 svg {\n  display: block;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-hidden {\n  display: none;\n}\n\n.igv-navbar-button {\n  display: block;\n  box-sizing: unset;\n  padding-left: 6px;\n  padding-right: 6px;\n  height: 18px;\n  text-transform: capitalize;\n  user-select: none;\n  line-height: 18px;\n  text-align: center;\n  vertical-align: middle;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 11px;\n  font-weight: 200;\n  color: #737373;\n  background-color: #f3f3f3;\n  border-color: #737373;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 6px;\n}\n\n.igv-navbar-button-clicked {\n  color: white;\n  background-color: #737373;\n}\n\n.igv-navbar-button:hover {\n  cursor: pointer;\n}\n\n.igv-zoom-in-notice-container {\n  z-index: 1024;\n  position: absolute;\n  top: 8px;\n  left: 50%;\n  transform: translate(-50%, 0%);\n  display: flex;\n  flex-direction: row;\n  flex-wrap: nowrap;\n  justify-content: center;\n  align-items: center;\n  background-color: white;\n}\n.igv-zoom-in-notice-container > div {\n  padding-left: 4px;\n  padding-right: 4px;\n  padding-top: 2px;\n  padding-bottom: 2px;\n  width: 100%;\n  height: 100%;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  color: #3f3f3f;\n}\n\n.igv-zoom-in-notice {\n  position: absolute;\n  top: 10px;\n  left: 50%;\n}\n.igv-zoom-in-notice div {\n  position: relative;\n  left: -50%;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  color: #3f3f3f;\n  background-color: rgba(255, 255, 255, 0.51);\n  z-index: 64;\n}\n\n.igv-container-spinner {\n  position: absolute;\n  top: 90%;\n  left: 50%;\n  transform: translate(-50%, -50%);\n  z-index: 1024;\n  width: 24px;\n  height: 24px;\n  pointer-events: none;\n  color: #737373;\n}\n\n.igv-multi-locus-close-button {\n  position: absolute;\n  top: 2px;\n  right: 0;\n  padding-left: 2px;\n  padding-right: 2px;\n  width: 12px;\n  height: 12px;\n  color: #666666;\n  background-color: white;\n  z-index: 1000;\n}\n.igv-multi-locus-close-button > svg {\n  vertical-align: top;\n}\n\n.igv-multi-locus-close-button:hover {\n  cursor: pointer;\n  color: #434343;\n}\n\n.igv-multi-locus-ruler-label {\n  z-index: 64;\n  position: absolute;\n  top: 2px;\n  left: 0;\n  width: 100%;\n  height: 12px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: center;\n  align-items: center;\n}\n.igv-multi-locus-ruler-label > div {\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 12px;\n  color: rgb(16, 16, 16);\n  background-color: white;\n}\n.igv-multi-locus-ruler-label > div {\n  cursor: pointer;\n}\n\n.igv-multi-locus-ruler-label-square-dot {\n  z-index: 64;\n  position: absolute;\n  left: 50%;\n  top: 5%;\n  transform: translate(-50%, 0%);\n  background-color: white;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-multi-locus-ruler-label-square-dot > div:first-child {\n  width: 14px;\n  height: 14px;\n}\n.igv-multi-locus-ruler-label-square-dot > div:last-child {\n  margin-left: 16px;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  color: rgb(16, 16, 16);\n}\n\n.igv-ruler-sweeper {\n  display: none;\n  pointer-events: none;\n  position: absolute;\n  top: 26px;\n  bottom: 0;\n  left: 0;\n  width: 0;\n  z-index: 99999;\n  background-color: rgba(68, 134, 247, 0.25);\n}\n\n.igv-ruler-tooltip {\n  pointer-events: none;\n  z-index: 128;\n  position: absolute;\n  top: 0;\n  left: 0;\n  width: 1px;\n  height: 32px;\n  background-color: transparent;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-ruler-tooltip > div {\n  pointer-events: none;\n  width: 128px;\n  height: auto;\n  padding: 1px;\n  color: #373737;\n  font-size: 10px;\n  font-family: \"Open Sans\", sans-serif;\n  font-weight: 400;\n  background-color: white;\n  border-style: solid;\n  border-width: thin;\n  border-color: #373737;\n}\n\n.igv-track-label {\n  position: absolute;\n  left: 8px;\n  top: 8px;\n  width: auto;\n  height: auto;\n  max-width: 50%;\n  padding-left: 4px;\n  padding-right: 4px;\n  white-space: nowrap;\n  overflow: hidden;\n  text-overflow: ellipsis;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: small;\n  font-weight: 400;\n  text-align: center;\n  user-select: none;\n  -moz-user-select: none;\n  -webkit-user-select: none;\n  border-color: #444;\n  border-radius: 2px;\n  border-style: solid;\n  border-width: thin;\n  background-color: white;\n  z-index: 128;\n  cursor: pointer;\n}\n\n.igv-track-label:hover,\n.igv-track-label:focus,\n.igv-track-label:active {\n  background-color: #e8e8e8;\n}\n\n.igv-track-label-popup-shim {\n  padding-left: 8px;\n  padding-right: 8px;\n  padding-top: 4px;\n}\n\n.igv-center-line {\n  display: none;\n  pointer-events: none;\n  position: absolute;\n  top: 0;\n  bottom: 0;\n  left: 50%;\n  transform: translateX(-50%);\n  z-index: 8;\n  user-select: none;\n  -moz-user-select: none;\n  -webkit-user-select: none;\n  border-left-style: dashed;\n  border-left-width: thin;\n  border-right-style: dashed;\n  border-right-width: thin;\n}\n\n.igv-center-line-wide {\n  background-color: rgba(0, 0, 0, 0);\n  border-left-color: rgba(127, 127, 127, 0.51);\n  border-right-color: rgba(127, 127, 127, 0.51);\n}\n\n.igv-center-line-thin {\n  background-color: rgba(0, 0, 0, 0);\n  border-left-color: rgba(127, 127, 127, 0.51);\n  border-right-color: rgba(0, 0, 0, 0);\n}\n\n.igv-cursor-guide-horizontal {\n  display: none;\n  pointer-events: none;\n  user-select: none;\n  -moz-user-select: none;\n  -webkit-user-select: none;\n  position: absolute;\n  left: 0;\n  right: 0;\n  top: 50%;\n  height: 1px;\n  z-index: 1;\n  margin-left: 50px;\n  margin-right: 54px;\n  border-top-style: dotted;\n  border-top-width: thin;\n  border-top-color: rgba(127, 127, 127, 0.76);\n}\n\n.igv-cursor-guide-vertical {\n  pointer-events: none;\n  user-select: none;\n  -moz-user-select: none;\n  -webkit-user-select: none;\n  position: absolute;\n  top: 0;\n  bottom: 0;\n  left: 50%;\n  width: 1px;\n  z-index: 1;\n  border-left-style: dotted;\n  border-left-width: thin;\n  border-left-color: rgba(127, 127, 127, 0.76);\n  display: none;\n}\n\n.igv-user-feedback {\n  position: fixed;\n  top: 50%;\n  left: 50%;\n  transform: translate(-50%, -50%);\n  width: 512px;\n  height: 360px;\n  z-index: 2048;\n  background-color: white;\n  border-color: #a2a2a2;\n  border-style: solid;\n  border-width: thin;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  color: #444;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-user-feedback div:first-child {\n  position: relative;\n  height: 24px;\n  width: 100%;\n  background-color: white;\n  border-bottom-color: #a2a2a2;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-user-feedback div:first-child div {\n  position: absolute;\n  top: 2px;\n  width: 16px;\n  height: 16px;\n  background-color: transparent;\n}\n.igv-user-feedback div:first-child div:first-child {\n  left: 8px;\n}\n.igv-user-feedback div:first-child div:last-child {\n  cursor: pointer;\n  right: 8px;\n}\n.igv-user-feedback div:last-child {\n  width: 100%;\n  height: calc(100% - 24px);\n  border-width: 0;\n}\n.igv-user-feedback div:last-child div {\n  width: auto;\n  height: auto;\n  margin: 8px;\n}\n\n.igv-generic-dialog-container {\n  position: absolute;\n  top: 0;\n  left: 0;\n  width: 300px;\n  height: 200px;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  z-index: 2048;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-header {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-generic-dialog-container .igv-generic-dialog-header div {\n  margin-right: 4px;\n  margin-bottom: 2px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-generic-dialog-container .igv-generic-dialog-header div:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-generic-dialog-container .igv-generic-dialog-one-liner {\n  color: #373737;\n  width: 95%;\n  height: 24px;\n  line-height: 24px;\n  text-align: left;\n  margin-top: 8px;\n  padding-left: 8px;\n  overflow-wrap: break-word;\n  background-color: white;\n}\n.igv-generic-dialog-container .igv-generic-dialog-label-input {\n  margin-top: 8px;\n  width: 95%;\n  height: 24px;\n  color: #373737;\n  line-height: 24px;\n  padding-left: 8px;\n  background-color: white;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-label-input div {\n  width: 30%;\n  height: 100%;\n  font-size: 16px;\n  text-align: right;\n  padding-right: 8px;\n  background-color: white;\n}\n.igv-generic-dialog-container .igv-generic-dialog-label-input input {\n  display: block;\n  height: 100%;\n  width: 100%;\n  padding-left: 4px;\n  font-family: \"Open Sans\", sans-serif;\n  font-weight: 400;\n  color: #373737;\n  text-align: left;\n  outline: none;\n  border-style: solid;\n  border-width: thin;\n  border-color: #7F7F7F;\n  background-color: white;\n}\n.igv-generic-dialog-container .igv-generic-dialog-label-input input {\n  width: 50%;\n  font-size: 16px;\n}\n.igv-generic-dialog-container .igv-generic-dialog-input {\n  margin-top: 8px;\n  width: calc(100% - 16px);\n  height: 24px;\n  color: #373737;\n  line-height: 24px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-input input {\n  display: block;\n  height: 100%;\n  width: 100%;\n  padding-left: 4px;\n  font-family: \"Open Sans\", sans-serif;\n  font-weight: 400;\n  color: #373737;\n  text-align: left;\n  outline: none;\n  border-style: solid;\n  border-width: thin;\n  border-color: #7F7F7F;\n  background-color: white;\n}\n.igv-generic-dialog-container .igv-generic-dialog-input input {\n  font-size: 16px;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel {\n  width: 100%;\n  height: 28px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div {\n  margin-top: 32px;\n  color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  width: 75px;\n  height: 28px;\n  line-height: 28px;\n  text-align: center;\n  border-color: transparent;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 2px;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:first-child {\n  margin-left: 32px;\n  margin-right: 0;\n  background-color: #5ea4e0;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:last-child {\n  margin-left: 0;\n  margin-right: 32px;\n  background-color: #c4c4c4;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:first-child:hover {\n  cursor: pointer;\n  background-color: #3b5c7f;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:last-child:hover {\n  cursor: pointer;\n  background-color: #7f7f7f;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok {\n  width: 100%;\n  height: 36px;\n  margin-top: 32px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok div {\n  width: 98px;\n  height: 36px;\n  line-height: 36px;\n  text-align: center;\n  color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  border-color: white;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 4px;\n  background-color: #2B81AF;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok div:hover {\n  cursor: pointer;\n  background-color: #25597f;\n}\n\n.igv-generic-container {\n  position: absolute;\n  top: 0;\n  left: 0;\n  z-index: 2048;\n  background-color: white;\n  cursor: pointer;\n  display: flex;\n  flex-direction: row;\n  flex-wrap: wrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-generic-container div:first-child {\n  cursor: move;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  height: 24px;\n  width: 100%;\n  background-color: #dddddd;\n}\n.igv-generic-container div:first-child i {\n  display: block;\n  color: #5f5f5f;\n  cursor: pointer;\n  width: 14px;\n  height: 14px;\n  margin-right: 8px;\n  margin-bottom: 4px;\n}\n\n.igv-menu-popup {\n  position: absolute;\n  top: 0;\n  left: 0;\n  width: max-content;\n  z-index: 4096;\n  cursor: pointer;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: small;\n  font-weight: 400;\n  color: #4b4b4b;\n  background: white;\n  border-radius: 4px;\n  border-color: #7F7F7F;\n  border-style: solid;\n  border-width: thin;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-end;\n  text-align: left;\n}\n.igv-menu-popup > div:not(:first-child) {\n  width: 100%;\n}\n.igv-menu-popup > div:not(:first-child) > div {\n  background: white;\n}\n.igv-menu-popup > div:not(:first-child) > div.context-menu {\n  padding-left: 4px;\n  padding-right: 4px;\n}\n.igv-menu-popup > div:not(:first-child) > div:last-child {\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n  border-bottom-color: transparent;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-menu-popup > div:not(:first-child) > div:hover {\n  background: #efefef;\n}\n\n.igv-menu-popup-shim {\n  padding-left: 8px;\n  padding-right: 8px;\n  padding-bottom: 1px;\n  padding-top: 1px;\n}\n\n.igv-menu-popup-header {\n  position: relative;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-color: transparent;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n}\n.igv-menu-popup-header div {\n  margin-right: 4px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-menu-popup-header div:hover {\n  cursor: pointer;\n  color: #444;\n}\n\n.igv-menu-popup-check-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n  width: 100%;\n  height: 20px;\n  margin-right: 4px;\n  background-color: transparent;\n}\n.igv-menu-popup-check-container div {\n  padding-top: 2px;\n  padding-left: 8px;\n}\n.igv-menu-popup-check-container div:first-child {\n  position: relative;\n  width: 12px;\n  height: 12px;\n}\n.igv-menu-popup-check-container div:first-child svg {\n  position: absolute;\n  width: 12px;\n  height: 12px;\n}\n\n.igv-user-feedback {\n  position: fixed;\n  top: 50%;\n  left: 50%;\n  transform: translate(-50%, -50%);\n  width: 512px;\n  height: 360px;\n  z-index: 2048;\n  background-color: white;\n  border-color: #a2a2a2;\n  border-style: solid;\n  border-width: thin;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  color: #444;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-user-feedback div:first-child {\n  position: relative;\n  height: 24px;\n  width: 100%;\n  background-color: white;\n  border-bottom-color: #a2a2a2;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-user-feedback div:first-child div {\n  position: absolute;\n  top: 2px;\n  width: 16px;\n  height: 16px;\n  background-color: transparent;\n}\n.igv-user-feedback div:first-child div:first-child {\n  left: 8px;\n}\n.igv-user-feedback div:first-child div:last-child {\n  cursor: pointer;\n  right: 8px;\n}\n.igv-user-feedback div:last-child {\n  width: 100%;\n  height: calc(100% - 24px);\n  border-width: 0;\n}\n.igv-user-feedback div:last-child div {\n  width: auto;\n  height: auto;\n  margin: 8px;\n}\n\n.igv-loading-spinner-container {\n  z-index: 1024;\n  position: absolute;\n  top: 50%;\n  left: 50%;\n  transform: translate(-50%, -50%);\n  width: 32px;\n  height: 32px;\n  display: flex;\n  flex-direction: row;\n  flex-wrap: nowrap;\n  justify-content: center;\n  align-items: center;\n}\n.igv-loading-spinner-container > div {\n  box-sizing: border-box;\n  width: 100%;\n  height: 100%;\n  border-radius: 50%;\n  border: 4px solid rgba(128, 128, 128, 0.5);\n  border-top-color: rgb(255, 255, 255);\n  animation: spin 1s ease-in-out infinite;\n  -webkit-animation: spin 1s ease-in-out infinite;\n}\n\n@keyframes spin {\n  to {\n    -webkit-transform: rotate(360deg);\n    transform: rotate(360deg);\n  }\n}\n@-webkit-keyframes spin {\n  to {\n    -webkit-transform: rotate(360deg);\n    transform: rotate(360deg);\n  }\n}\n.igv-roi-menu-next-gen {\n  position: absolute;\n  z-index: 512;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: small;\n  font-weight: 400;\n  color: #4b4b4b;\n  background-color: white;\n  width: 192px;\n  border-radius: 4px;\n  border-color: #7F7F7F;\n  border-style: solid;\n  border-width: thin;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n}\n.igv-roi-menu-next-gen > div:first-child {\n  height: 24px;\n  border-top-color: transparent;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n}\n.igv-roi-menu-next-gen > div:first-child > div {\n  margin-right: 4px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-roi-menu-next-gen > div:first-child > div:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-roi-menu-next-gen > div:last-child {\n  background-color: white;\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n  border-bottom-color: transparent;\n  border-bottom-style: solid;\n  border-bottom-width: 0;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n  text-align: start;\n  vertical-align: middle;\n}\n.igv-roi-menu-next-gen > div:last-child > div {\n  height: 24px;\n  padding-left: 4px;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  border-bottom-color: #7f7f7f;\n}\n.igv-roi-menu-next-gen > div:last-child > div:not(:first-child):hover {\n  background-color: rgba(127, 127, 127, 0.1);\n}\n.igv-roi-menu-next-gen > div:last-child div:first-child {\n  font-style: italic;\n  text-align: center;\n  padding-right: 4px;\n  white-space: nowrap;\n  overflow: hidden;\n  text-overflow: ellipsis;\n}\n.igv-roi-menu-next-gen > div:last-child > div:last-child {\n  border-bottom-width: 0;\n  border-bottom-color: transparent;\n}\n\n.igv-roi-placeholder {\n  font-style: normal;\n  color: rgba(75, 75, 75, 0.6);\n}\n\n.igv-roi-table {\n  position: absolute;\n  z-index: 1024;\n  width: min-content;\n  max-width: 1600px;\n  border-color: #7f7f7f;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 12px;\n  font-weight: 400;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n  cursor: default;\n}\n.igv-roi-table > div {\n  height: 24px;\n  font-size: 14px;\n  text-align: start;\n  vertical-align: middle;\n  line-height: 24px;\n}\n.igv-roi-table > div:first-child {\n  border-color: transparent;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-top-width: 0;\n  border-bottom-color: #7f7f7f;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n  cursor: move;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n}\n.igv-roi-table > div:first-child > div:first-child {\n  text-align: center;\n  white-space: nowrap;\n  text-overflow: ellipsis;\n  overflow: hidden;\n  margin-left: 4px;\n  margin-right: 4px;\n  width: calc(100% - 4px - 12px);\n}\n.igv-roi-table > div:first-child > div:last-child {\n  margin-right: 4px;\n  margin-bottom: 2px;\n  height: 12px;\n  width: 12px;\n  color: #7f7f7f;\n}\n.igv-roi-table > div:first-child > div:last-child > svg {\n  display: block;\n}\n.igv-roi-table > div:first-child > div:last-child:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-roi-table > .igv-roi-table-description {\n  padding: 4px;\n  margin-left: 4px;\n  word-break: break-all;\n  overflow-y: auto;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  background-color: transparent;\n}\n.igv-roi-table > .igv-roi-table-goto-explainer {\n  margin-top: 5px;\n  margin-left: 4px;\n  color: #7F7F7F;\n  font-style: italic;\n  height: 24px;\n  border-top: solid lightgray;\n  background-color: transparent;\n}\n.igv-roi-table > .igv-roi-table-column-titles {\n  height: 24px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: stretch;\n  align-items: stretch;\n  padding-right: 16px;\n  background-color: white;\n  border-top-color: #7f7f7f;\n  border-top-style: solid;\n  border-top-width: thin;\n  border-bottom-color: #7f7f7f;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-roi-table > .igv-roi-table-column-titles > div {\n  font-size: 14px;\n  vertical-align: middle;\n  line-height: 24px;\n  text-align: left;\n  margin-left: 4px;\n  height: 24px;\n  overflow: hidden;\n  text-overflow: ellipsis;\n  border-right-color: #7f7f7f;\n  border-right-style: solid;\n  border-right-width: thin;\n}\n.igv-roi-table > .igv-roi-table-column-titles > div:last-child {\n  border-right: unset;\n}\n.igv-roi-table > .igv-roi-table-row-container {\n  overflow: auto;\n  resize: both;\n  max-width: 1600px;\n  height: 360px;\n  background-color: transparent;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n}\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row {\n  height: 24px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: stretch;\n  align-items: stretch;\n}\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row > div {\n  font-size: 14px;\n  vertical-align: middle;\n  line-height: 24px;\n  text-align: left;\n  margin-left: 4px;\n  height: 24px;\n  white-space: nowrap;\n  overflow: hidden;\n  text-overflow: ellipsis;\n  border-right-color: transparent;\n  border-right-style: solid;\n  border-right-width: thin;\n}\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row > div:last-child {\n  border-right: unset;\n}\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row-hover {\n  background-color: rgba(0, 0, 0, 0.04);\n}\n.igv-roi-table > div:last-child {\n  height: 32px;\n  line-height: 32px;\n  border-top-color: #7f7f7f;\n  border-top-style: solid;\n  border-top-width: thin;\n  border-bottom-color: transparent;\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n  border-bottom-width: 0;\n  background-color: #eee;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n\n.igv-roi-table-row-selected {\n  background-color: rgba(0, 0, 0, 0.125);\n}\n\n.igv-roi-table-button {\n  cursor: pointer;\n  height: 20px;\n  user-select: none;\n  line-height: 20px;\n  text-align: center;\n  vertical-align: middle;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 13px;\n  font-weight: 400;\n  color: black;\n  padding-left: 6px;\n  padding-right: 6px;\n  background-color: rgb(239, 239, 239);\n  border-color: black;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 3px;\n}\n\n.igv-roi-table-button:hover {\n  font-weight: 400;\n  background-color: rgba(0, 0, 0, 0.13);\n}\n\n.igv-roi-region {\n  z-index: 64;\n  position: absolute;\n  top: 0;\n  bottom: 0;\n  pointer-events: none;\n  overflow: visible;\n  margin-top: 44px;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n}\n.igv-roi-region > div {\n  position: relative;\n  width: 100%;\n  height: 8px;\n  pointer-events: auto;\n}\n\n.igv-roi-menu {\n  position: absolute;\n  z-index: 1024;\n  width: 144px;\n  border-color: #7f7f7f;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: \"Open Sans\", sans-serif;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n}\n.igv-roi-menu > div:not(:last-child) {\n  border-bottom-color: rgba(128, 128, 128, 0.5);\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-roi-menu > div:first-child {\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-top-color: transparent;\n  border-top-style: solid;\n  border-top-width: 0;\n}\n.igv-roi-menu > div:last-child {\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n  border-bottom-color: transparent;\n  border-bottom-style: solid;\n  border-bottom-width: 0;\n}\n\n.igv-roi-menu-row {\n  height: 24px;\n  padding-left: 8px;\n  font-size: small;\n  text-align: start;\n  vertical-align: middle;\n  line-height: 24px;\n  background-color: white;\n}\n\n.igv-roi-menu-row-edit-description {\n  width: -webkit-fill-available;\n  font-size: small;\n  text-align: start;\n  vertical-align: middle;\n  background-color: white;\n  padding-left: 4px;\n  padding-right: 4px;\n  padding-bottom: 4px;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: stretch;\n  align-items: stretch;\n}\n.igv-roi-menu-row-edit-description > label {\n  margin-left: 2px;\n  margin-bottom: 0;\n  display: block;\n  width: -webkit-fill-available;\n}\n.igv-roi-menu-row-edit-description > input {\n  display: block;\n  margin-left: 2px;\n  margin-right: 2px;\n  margin-bottom: 1px;\n  width: -webkit-fill-available;\n}\n\n.igv-container {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  padding-top: 4px;\n  user-select: none;\n  -webkit-user-select: none;\n  -ms-user-select: none;\n}\n\n.igv-viewport {\n  position: relative;\n  margin-top: 5px;\n  line-height: 1;\n  overflow-x: hidden;\n  overflow-y: hidden;\n}\n\n.igv-viewport-content {\n  position: relative;\n  width: 100%;\n}\n.igv-viewport-content > canvas {\n  position: relative;\n  display: block;\n}\n\n.igv-column-container {\n  position: relative;\n  display: flex;\n  flex-direction: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n  width: 100%;\n}\n\n.igv-column-shim {\n  width: 1px;\n  margin-left: 2px;\n  margin-right: 2px;\n  background-color: #545453;\n}\n\n.igv-column {\n  position: relative;\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n}\n\n.igv-axis-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n  width: 50px;\n}\n.igv-axis-column > div {\n  margin-top: 5px;\n  width: 100%;\n}\n\n.igv-sample-name-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n}\n\n.igv-scrollbar-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n  width: 14px;\n}\n.igv-scrollbar-column > div {\n  position: relative;\n  margin-top: 5px;\n  width: 14px;\n}\n.igv-scrollbar-column > div > div {\n  cursor: pointer;\n  position: absolute;\n  top: 0;\n  left: 2px;\n  width: 8px;\n  border-width: 1px;\n  border-style: solid;\n  border-color: #c4c4c4;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n}\n.igv-scrollbar-column > div > div:hover {\n  background-color: #c4c4c4;\n}\n\n.igv-track-drag-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n  width: 12px;\n  background-color: white;\n}\n.igv-track-drag-column > .igv-track-drag-handle {\n  z-index: 512;\n  position: relative;\n  cursor: pointer;\n  margin-top: 5px;\n  width: 100%;\n  border-style: solid;\n  border-width: 0;\n  border-top-right-radius: 6px;\n  border-bottom-right-radius: 6px;\n  background-color: #c4c4c4;\n}\n.igv-track-drag-column .igv-track-drag-handle-hover {\n  background-color: #787878;\n}\n.igv-track-drag-column > .igv-track-drag-shim {\n  position: relative;\n  margin-top: 5px;\n  width: 100%;\n  border-style: solid;\n  border-width: 0;\n}\n\n.igv-gear-menu-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n  width: 28px;\n}\n.igv-gear-menu-column > div {\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n  margin-top: 5px;\n  width: 100%;\n  background: white;\n}\n.igv-gear-menu-column > div > div {\n  position: relative;\n  margin-top: 4px;\n  width: 16px;\n  height: 16px;\n  color: #7F7F7F;\n}\n.igv-gear-menu-column > div > div:hover {\n  cursor: pointer;\n  color: #444;\n}\n\n/*# sourceMappingURL=dom.css.map */\n';
+
+        var style = document.createElement('style');
+        style.setAttribute('type', 'text/css');
+        style.innerHTML = css;
+
+        document.head.append(style);
+
+    }
+
+    // Defines the top-level API for the igv module
+
+    const setApiKey = igvxhr.setApiKey;
+
+    embedCSS();
+
+    function setGoogleOauthToken(accessToken) {
+        return igvxhr.setOauthToken(accessToken)
+    }
+
+    function setOauthToken(accessToken, host) {
+        return igvxhr.setOauthToken(accessToken, host)
+    }
+
+    // Backward compatibility
+    const oauth = igvxhr.oauth;
+
+    var index = {
+        TrackUtils,
+        IGVGraphics,
+        MenuUtils,
+        DataRangeDialog,
+        createTrack,
+        createBrowser,
+        removeBrowser,
+        removeAllBrowsers,
+        visibilityChange,
+        setGoogleOauthToken,
+        setOauthToken,
+        oauth,
+        version,
+        setApiKey,
+        registerFileFormats
+    };
+
+    return index;
+
+}));
diff --git a/igv_component/node_modules/igv/dist/igv.min.js b/igv_component/node_modules/igv/dist/igv.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..878a2bf852bd28804c36f674fb09396d79bd9078
--- /dev/null
+++ b/igv_component/node_modules/igv/dist/igv.min.js
@@ -0,0 +1,49 @@
+!function(e,t){"object"==typeof exports&&"undefined"!=typeof module?module.exports=t():"function"==typeof define&&define.amd?define(t):(e="undefined"!=typeof globalThis?globalThis:e||self).igv=t()}(this,(function(){"use strict";
+/*!
+     * jQuery JavaScript Library v3.3.1 -ajax,-ajax/jsonp,-ajax/load,-ajax/parseXML,-ajax/script,-ajax/var/location,-ajax/var/nonce,-ajax/var/rquery,-ajax/xhr,-manipulation/_evalUrl,-event/ajax,-effects,-effects/Tween,-effects/animatedSelector
+     * https://jquery.com/
+     *
+     * Includes Sizzle.js
+     * https://sizzlejs.com/
+     *
+     * Copyright JS Foundation and other contributors
+     * Released under the MIT license
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t=e.screenX-Ci.screenX,i=e.screenY-Ci.screenY,n=Ci.left+t,r=Ci.constraint?Math.max(Ci.constraint.minY,Ci.top+i):Ci.top+i;this.style.left=`${n}px`,this.style.top=`${r}px`}function Ei(e){if(!Ci)return void console.error("No drag data!");e.stopPropagation(),e.preventDefault();const t=Ci.dragFunction,i=Ci.dragEndFunction;document.removeEventListener("mousemove",t),document.removeEventListener("mouseup",i),document.removeEventListener("mouseleave",i),document.removeEventListener("mouseexit",i),Ci=void 0}const Ti={401:"Access unauthorized",403:"Access forbidden",404:"Not found"};class Mi{constructor(e,t){this.alertProps=Object.assign({shouldFocus:!0,preventScroll:!1},t),this.container=pt({class:"igv-ui-alert-dialog-container"}),e.appendChild(this.container),this.container.setAttribute("tabIndex","-1");const i=pt();this.container.appendChild(i),this.errorHeadline=pt(),i.appendChild(this.errorHeadline),this.errorHeadline.textContent="";let n=pt({class:"igv-ui-alert-dialog-body"});this.container.appendChild(n),this.body=pt({class:"igv-ui-alert-dialog-body-copy"}),n.appendChild(this.body);let r=pt();this.container.appendChild(r),this.ok=pt(),r.appendChild(this.ok),this.ok.textContent="OK";const s=()=>{"function"==typeof this.callback&&(this.callback("OK"),this.callback=void 0),this.body.innerHTML="",mt(this.container)};this.ok.addEventListener("click",(e=>{e.stopPropagation(),s()})),this.container.addEventListener("keypress",(e=>{e.stopPropagation(),"Enter"===e.key&&s()})),Si(this.container,i),mt(this.container)}present(e,t){this.errorHeadline.textContent=e.message?"ERROR":"";let i=e.message||e;Ti.hasOwnProperty(i)&&(i=Ti[i]);const n=mi.sanitize(i);this.body.innerHTML=n,this.callback=t,bt(this.container),this.alertProps.shouldFocus&&this.container.focus({preventScroll:this.alertProps.preventScroll})}}class 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Li={licorice:"#000000",lead:"#1e1e1e",tungsten:"#3a3a3a",iron:"#545453",steel:"#6e6e6e",tin:"#878687",nickel:"#888787",aluminum:"#a09fa0",magnesium:"#b8b8b8",silver:"#d0d0d0",mercury:"#e8e8e8",snow:"#ffffff",cayenne:"#891100",mocha:"#894800",aspargus:"#888501",fern:"#458401",clover:"#028401",moss:"#018448",teal:"#008688",ocean:"#004a88",midnight:"#001888",eggplant:"#491a88",plum:"#891e88",maroon:"#891648",maraschino:"#ff2101",tangerine:"#ff8802",lemon:"#fffa03",lime:"#83f902",spring:"#05f802",seam_foam:"#03f987",turquoise:"#00fdff",aqua:"#008cff",blueberry:"#002eff",grape:"#8931ff",magenta:"#ff39ff",strawberry:"#ff2987",salmon:"#ff726e",cantaloupe:"#ffce6e",banana:"#fffb6d",honeydew:"#cefa6e",flora:"#68f96e",spindrift:"#68fbd0",ice:"#68fdff",sky:"#6acfff",orchid:"#6e76ff",lavender:"#d278ff",bubblegum:"#ff7aff",carnation:"#ff7fd3"};class Ii{constructor({parent:e,top:t,left:i,width:n,height:r,border:s,closeHandler:o}){let a=pt({class:"igv-ui-generic-container"});e.appendChild(a),mt(a),this.container=a,void 0!==t&&(this.container.style.top=`${t}px`),void 0!==i&&(this.container.style.left=`${i}px`),void 0!==n&&(this.container.style.width=`${n}px`),void 0!==r&&(this.container.style.height=`${r}px`),s&&(this.container.style.border=s);const l=pt();this.container.appendChild(l),xi(l,(e=>{mt(this.container),"function"==typeof o&&o(e)})),Si(this.container,l)}show(){bt(this.container)}hide(){mt(this.container)}dispose(){this.container.parent&&this.container.parent.removeChild(this.container)}}class Ni extends Ii{constructor({parent:e,top:t,left:i,width:n,height:r,defaultColors:s,colorHandler:o}){super({parent:e,top:t,left:i,width:n,height:r,border:"1px solid gray"}),Fi(this.container,o,s)}}const Fi=(e,t,i)=>{const n=Object.values(Li);for(let i of n){const n=pt({class:"igv-ui-color-swatch"});e.appendChild(n),Bi(n,i,t)}if(i)for(let n of i){const i=pt({class:"igv-ui-color-swatch"});e.appendChild(i),Bi(i,n,t)}},Bi=(e,t,i)=>{e.style.backgroundColor=t,e.addEventListener("mouseenter",(i=>e.style.borderColor=t)),e.addEventListener("mouseleave",(t=>e.style.borderColor="white")),e.addEventListener("click",(e=>{e.stopPropagation(),i(t)})),e.addEventListener("touchend",(e=>{e.stopPropagation(),i(t)}))};class Oi{constructor(e,t){this.parent=e,this.popover=pt({class:"igv-ui-popover"}),e.appendChild(this.popover);const i=pt();this.popover.appendChild(i);const n=pt();i.appendChild(n),t&&(n.textContent=t),xi(i,(()=>this.hide())),Si(this.popover,i),this.popoverContent=pt(),this.popover.appendChild(this.popoverContent),this.popover.style.display="none"}presentContentWithEvent(e,t){this.popover.style.display="block",this.popoverContent.innerHTML=t,Di(e,this.popover,this.popoverContent)}presentMenu(e,t){if(0===t.length)return;this.popover.style.display="block";const i=function(e,t){const i=e.map((function(e,i){let n;if("string"==typeof e)n=pt(),n.innerHTML=e;else if("Node"==typeof e)n=e;else{if("function"==typeof e.init&&e.init(),"checkbox"===e.type)n=bi("Show all bases",e.value);else if("color"===e.type){const r=new Ni({parent:t.parentElement,width:364,colorHandler:t=>e.click(t)});n=pt(),"string"==typeof e.label&&(n.innerHTML=e.label);const s=e=>{r.show(),mt(t),e.preventDefault(),e.stopPropagation()};n.addEventListener("click",s),n.addEventListener("touchend",s),n.addEventListener("mouseup",(function(e){e.preventDefault(),e.stopPropagation()}))}else n=pt(),"string"==typeof e.label&&(n.innerHTML=e.label);if(e.click&&"color"!==e.type){function o(i){e.click(),mt(t),i.preventDefault(),i.stopPropagation()}n.addEventListener("click",o),n.addEventListener("touchend",o),n.addEventListener("mouseup",(function(e){e.preventDefault(),e.stopPropagation()}))}}return{object:n,init:e.init}}));return i}(t,this.popover);for(let e of i)this.popoverContent.appendChild(e.object);Di(e,this.popover,this.popoverContent)}hide(){this.popover.style.display="none",this.dispose()}dispose(){this.popover&&this.popover.parentNode.removeChild(this.popover);const e=Object.keys(this);for(let t of e)this[t]=void 0}}function Di(e,t,i){const{x:n,y:r,width:s}=yt(e,t.parentNode);t.style.top=`${r}px`;const{width:o}=t.getBoundingClientRect(),a=n+o,l=a-s;t.style.left=`${a>s?n-l:n}px`,i.style.maxWidth=`${Math.min(o,s)}px`}class Pi extends Ii{constructor({parent:e,width:t}){super({parent:e,width:t,border:"1px solid gray"})}configure(e,t){this.colorHandlers=t,this.setActiveColorHandler("color"),this.createSwatches(e)}setActiveColorHandler(e){this.activeColorHandler=this.colorHandlers[e]}createSwatches(e){this.container.querySelectorAll(".igv-ui-color-swatch").forEach((e=>e.remove()));const t=Object.values(Li);for(let e of t){const t=pt({class:"igv-ui-color-swatch"});this.container.appendChild(t),this.decorateSwatch(t,e)}if(e)for(let t of e){const e=pt({class:"igv-ui-color-swatch"});this.container.appendChild(e),this.decorateSwatch(e,t)}}decorateSwatch(e,t){e.style.backgroundColor=t,e.addEventListener("mouseenter",(()=>e.style.borderColor=t)),e.addEventListener("mouseleave",(()=>e.style.borderColor="white")),e.addEventListener("click",(e=>{e.stopPropagation(),this.activeColorHandler(t)})),e.addEventListener("touchend",(e=>{e.stopPropagation(),this.activeColorHandler(t)}))}}if("undefined"!=typeof document){function Hw(e){for(let t of document.styleSheets)if(t=t.href?t.href.replace(/^.*[\\\/]/,""):"",t===e)return!0;return!1}Hw("igv-ui.css")||function(){const e=document.createElement("style");e.setAttribute("type","text/css"),e.setAttribute("title","igv-ui.css"),e.innerHTML='.igv-ui-popover {\n  cursor: default;\n  position: absolute;\n  z-index: 2048;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: 1px;\n  font-family: "Open Sans", sans-serif;\n  font-size: small;\n  background-color: white;\n}\n.igv-ui-popover > div:first-child {\n  display: flex;\n  flex-direction: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-ui-popover > div:first-child > div:first-child {\n  margin-left: 4px;\n}\n.igv-ui-popover > div:first-child > div:last-child {\n  margin-right: 4px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-ui-popover > div:first-child > div:last-child:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-ui-popover > div:last-child {\n  overflow-y: auto;\n  overflow-x: hidden;\n  max-height: 400px;\n  max-width: 800px;\n  background-color: white;\n}\n.igv-ui-popover > div:last-child > div {\n  user-select: all;\n  margin-left: 4px;\n  margin-right: 4px;\n  min-width: 220px;\n  overflow-x: hidden;\n  text-overflow: ellipsis;\n  white-space: nowrap;\n}\n.igv-ui-popover > div:last-child > div > span {\n  font-weight: bolder;\n}\n.igv-ui-popover > div:last-child hr {\n  width: 100%;\n}\n\n.igv-ui-alert-dialog-container {\n  box-sizing: content-box;\n  position: absolute;\n  z-index: 2048;\n  top: 50%;\n  left: 50%;\n  width: 400px;\n  height: 200px;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  outline: none;\n  font-family: "Open Sans", sans-serif;\n  font-size: 15px;\n  font-weight: 400;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n}\n.igv-ui-alert-dialog-container > div:first-child {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-ui-alert-dialog-container > div:first-child div:first-child {\n  padding-left: 8px;\n}\n.igv-ui-alert-dialog-container .igv-ui-alert-dialog-body {\n  -webkit-user-select: text;\n  -moz-user-select: text;\n  -ms-user-select: text;\n  user-select: text;\n  color: #373737;\n  width: 100%;\n  height: calc(100% - 24px - 64px);\n  overflow-y: scroll;\n}\n.igv-ui-alert-dialog-container .igv-ui-alert-dialog-body .igv-ui-alert-dialog-body-copy {\n  margin: 16px;\n  width: auto;\n  height: auto;\n  overflow-wrap: break-word;\n  word-break: break-word;\n  background-color: white;\n  border: unset;\n}\n.igv-ui-alert-dialog-container > div:last-child {\n  width: 100%;\n  margin-bottom: 10px;\n  background-color: white;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: center;\n  align-items: center;\n}\n.igv-ui-alert-dialog-container > div:last-child div {\n  margin: unset;\n  width: 40px;\n  height: 30px;\n  line-height: 30px;\n  text-align: center;\n  color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: small;\n  font-weight: 400;\n  border-color: #2B81AF;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 4px;\n  background-color: #2B81AF;\n}\n.igv-ui-alert-dialog-container > div:last-child div:hover {\n  cursor: pointer;\n  border-color: #25597f;\n  background-color: #25597f;\n}\n\n.igv-ui-color-swatch {\n  position: relative;\n  box-sizing: content-box;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: wrap;\n  justify-content: center;\n  align-items: center;\n  width: 32px;\n  height: 32px;\n  border-style: solid;\n  border-width: 2px;\n  border-color: white;\n  border-radius: 4px;\n}\n\n.igv-ui-color-swatch:hover {\n  border-color: dimgray;\n}\n\n.igv-ui-colorpicker-menu-close-button {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  width: 100%;\n  height: 32px;\n  margin-top: 4px;\n  margin-bottom: 4px;\n  padding-right: 8px;\n}\n.igv-ui-colorpicker-menu-close-button i.fa {\n  display: block;\n  margin-left: 4px;\n  margin-right: 4px;\n  color: #5f5f5f;\n}\n.igv-ui-colorpicker-menu-close-button i.fa:hover,\n.igv-ui-colorpicker-menu-close-button i.fa:focus,\n.igv-ui-colorpicker-menu-close-button i.fa:active {\n  cursor: pointer;\n  color: #0f0f0f;\n}\n\n.igv-ui-generic-dialog-container {\n  box-sizing: content-box;\n  position: fixed;\n  top: 0;\n  left: 0;\n  width: 300px;\n  height: 200px;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  z-index: 2048;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header div {\n  margin-right: 4px;\n  margin-bottom: 2px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header div:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-one-liner {\n  color: #373737;\n  width: 95%;\n  height: 24px;\n  line-height: 24px;\n  text-align: left;\n  margin-top: 8px;\n  padding-left: 8px;\n  overflow-wrap: break-word;\n  background-color: white;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input {\n  margin-top: 8px;\n  width: 95%;\n  height: 24px;\n  color: #373737;\n  line-height: 24px;\n  padding-left: 8px;\n  background-color: white;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input div {\n  width: 30%;\n  height: 100%;\n  font-size: 16px;\n  text-align: right;\n  padding-right: 8px;\n  background-color: white;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input input {\n  display: block;\n  height: 100%;\n  width: 100%;\n  padding-left: 4px;\n  font-family: "Open Sans", sans-serif;\n  font-weight: 400;\n  color: #373737;\n  text-align: left;\n  outline: none;\n  border-style: solid;\n  border-width: thin;\n  border-color: #7F7F7F;\n  background-color: white;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input input {\n  width: 50%;\n  font-size: 16px;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input {\n  margin-top: 8px;\n  width: calc(100% - 16px);\n  height: 24px;\n  color: #373737;\n  line-height: 24px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input input {\n  display: block;\n  height: 100%;\n  width: 100%;\n  padding-left: 4px;\n  font-family: "Open Sans", sans-serif;\n  font-weight: 400;\n  color: #373737;\n  text-align: left;\n  outline: none;\n  border-style: solid;\n  border-width: thin;\n  border-color: #7F7F7F;\n  background-color: white;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input input {\n  font-size: 16px;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel {\n  width: 100%;\n  height: 28px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div {\n  margin-top: 32px;\n  color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  width: 75px;\n  height: 28px;\n  line-height: 28px;\n  text-align: center;\n  border-color: transparent;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 2px;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:first-child {\n  margin-left: 32px;\n  margin-right: 0;\n  background-color: #5ea4e0;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:last-child {\n  margin-left: 0;\n  margin-right: 32px;\n  background-color: #c4c4c4;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:first-child:hover {\n  cursor: pointer;\n  background-color: #3b5c7f;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:last-child:hover {\n  cursor: pointer;\n  background-color: #7f7f7f;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok {\n  width: 100%;\n  height: 36px;\n  margin-top: 32px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok div {\n  width: 98px;\n  height: 36px;\n  line-height: 36px;\n  text-align: center;\n  color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  border-color: white;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 4px;\n  background-color: #2B81AF;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok div:hover {\n  cursor: pointer;\n  background-color: #25597f;\n}\n\n.igv-ui-generic-container {\n  box-sizing: content-box;\n  position: absolute;\n  z-index: 2048;\n  background-color: white;\n  cursor: pointer;\n  display: flex;\n  flex-direction: row;\n  flex-wrap: wrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-ui-generic-container > div:first-child {\n  cursor: move;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  height: 24px;\n  width: 100%;\n  background-color: #dddddd;\n}\n.igv-ui-generic-container > div:first-child > div {\n  display: block;\n  color: #5f5f5f;\n  cursor: pointer;\n  width: 14px;\n  height: 14px;\n  margin-right: 8px;\n  margin-bottom: 4px;\n}\n\n.igv-ui-dialog {\n  z-index: 2048;\n  position: fixed;\n  width: fit-content;\n  height: fit-content;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  background-color: white;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n}\n.igv-ui-dialog .igv-ui-dialog-header {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-ui-dialog .igv-ui-dialog-header div {\n  margin-right: 4px;\n  margin-bottom: 2px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-ui-dialog .igv-ui-dialog-header div:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-ui-dialog .igv-ui-dialog-one-liner {\n  width: 95%;\n  height: 24px;\n  line-height: 24px;\n  text-align: left;\n  margin: 8px;\n  overflow-wrap: break-word;\n  background-color: white;\n  font-weight: bold;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel {\n  width: 100%;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div {\n  margin: 16px;\n  margin-top: 32px;\n  color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  width: 75px;\n  height: 28px;\n  line-height: 28px;\n  text-align: center;\n  border-color: transparent;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 2px;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div:first-child {\n  background-color: #5ea4e0;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div:last-child {\n  background-color: #c4c4c4;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div:first-child:hover {\n  cursor: pointer;\n  background-color: #3b5c7f;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div:last-child:hover {\n  cursor: pointer;\n  background-color: #7f7f7f;\n}\n.igv-ui-dialog .igv-ui-dialog-ok {\n  width: 100%;\n  height: 36px;\n  margin-top: 32px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-dialog .igv-ui-dialog-ok div {\n  width: 98px;\n  height: 36px;\n  line-height: 36px;\n  text-align: center;\n  color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  border-color: white;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 4px;\n  background-color: #2B81AF;\n}\n.igv-ui-dialog .igv-ui-dialog-ok div:hover {\n  cursor: pointer;\n  background-color: #25597f;\n}\n\n.igv-ui-panel, .igv-ui-panel-row, .igv-ui-panel-column {\n  z-index: 2048;\n  background-color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  display: flex;\n  justify-content: flex-start;\n  align-items: flex-start;\n}\n\n.igv-ui-panel-column {\n  display: flex;\n  flex-direction: column;\n}\n\n.igv-ui-panel-row {\n  display: flex;\n  flex-direction: row;\n}\n\n.igv-ui-textbox {\n  background-color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  display: flex;\n  justify-content: flex-start;\n  align-items: flex-start;\n}\n\n.igv-ui-table {\n  background-color: white;\n}\n\n.igv-ui-table thead {\n  position: sticky;\n  top: 0;\n}\n\n.igv-ui-table th {\n  text-align: left;\n}\n\n.igv-ui-table td {\n  padding-right: 20px;\n}\n\n.igv-ui-table tr:hover {\n  background-color: lightblue;\n}\n\n/*# sourceMappingURL=igv-ui.css.map */\n',document.head.append(e)}()}function zi(e,t){const i=_t.div({class:"igv-menu-popup-check-container"}),n=_t.div();i.appendChild(n);const r=_i.createIcon("check",!0===t?"#444":"transparent");n.appendChild(r);const s=_t.div();return s.innerText=e,i.appendChild(s),i}const Hi={trackMenuItemList:function(e){const t=new Set(["alignment","annotation","variant","eqtl","snp"]),i=e.track.config&&void 0!==e.track.config.visibilityWindow;let n=[];return"sequence"!==e.track.config.type&&(n.push(function(e){const t=t=>{const i=function(){let t=e.browser.inputDialog.value;t=""===t||void 0===t?"untitled":t.trim(),e.track.name=t},n={label:"Track Name",value:Vi(e.track)||"unnamed",callback:i};e.browser.inputDialog.present(n,t)},i=ft("<div>");return i.text("Set track name"),{object:i,click:t}}(e)),n.push(function(e){const t=t=>{const i=()=>{const t=Number(e.browser.inputDialog.value,10);void 0!==t&&(void 0!==e.track.minHeight&&e.track.minHeight>t&&(e.track.minHeight=t),void 0!==e.track.maxHeight&&e.track.maxHeight<t&&(e.track.minHeight=t),e.setTrackHeight(t,!0),e.checkContentHeight(),e.repaintViews(),e.track.autoHeight=!1)},n={label:"Track Height",value:e.track.height,callback:i};e.browser.inputDialog.present(n,t)},i=ft("<div>");return i.text("Set track height"),{object:i,click:t}}(e))),this.showColorPicker(e.track)&&(n.push("<hr/>"),n.push(Ui({trackView:e,label:"Set track color",option:"color"})),n.push(function({trackView:e,label:t}){const i=ft("<div>");return i.text(t),{object:i,click:()=>{e.track.color=void 0,e.repaintViews()}}}({trackView:e,label:"Unset track color"})),"wig"!==e.track.config.type&&"annotation"!==e.track.config.type||(n.push(Ui({trackView:e,label:"Set alt color",option:"altColor"})),n.push(function({trackView:e,label:t}){const i=ft("<div>");return i.text(t),{object:i,click:()=>{e.track.altColor=void 0,e.repaintViews()}}}({trackView:e,label:"Unset alt color"})))),e.track.menuItemList&&(n=n.concat(e.track.menuItemList())),(i||t.has(e.track.type))&&(n.push("<hr/>"),n.push(function(e){const t=t=>{const i=()=>{let t=e.browser.inputDialog.value;t=""===t||void 0===t?-1:t.trim(),e.track.visibilityWindow=Number.parseInt(t),e.track.config.visibilityWindow=Number.parseInt(t),e.updateViews()},n={label:"Visibility Window",value:e.track.visibilityWindow,callback:i};e.browser.inputDialog.present(n,t)},i=ft("<div>");return i.text("Set visibility window"),{object:i,click:t}}(e))),!1!==e.track.removable&&(n.push("<hr/>"),n.push(function(e){const t=ft("<div>");return t.text("Remove track"),{object:t,click:()=>e.browser.removeTrack(e.track)}}(e))),n},numericDataMenuItems:function(e){const t=[];t.push("<hr/>");const i=ft("<div>");i.text("Set data range");return t.push({object:i,click:()=>{e.browser.dataRangeDialog.configure(e),e.browser.dataRangeDialog.present(ft(e.browser.columnContainer))}}),void 0!==e.track.logScale&&t.push({object:ft(zi("Log scale",e.track.logScale)),click:()=>{e.track.logScale=!e.track.logScale,e.repaintViews()}}),t.push({object:ft(zi("Autoscale",e.track.autoscale)),click:()=>{e.track.autoscale=!e.track.autoscale,e.updateViews()}}),t},trackMenuItemListHelper:function(e,t){var i=[];return e.length>0&&(i=e.map((function(e,i){var n;if(e.name?(n=ft("<div>")).text(e.name):e.object?n=e.object:"string"==typeof e.label?(n=ft("<div>")).html(e.label):"string"==typeof e&&(n=e.startsWith("<")?ft(e):ft("<div>"+e+"</div>")),0===i&&n.addClass("igv-track-menu-border-top"),e.click){function r(i){e.click(i),t.hide(),i.preventDefault(),i.stopPropagation()}n.on("click",r),n.on("touchend",(function(e){r(e)})),n.on("mouseup",(function(e){e.preventDefault(),e.stopPropagation()}))}return{object:n,init:e.init||void 0}}))),i},showColorPicker:e=>void 0===e.type||"bedtype"===e.type||"alignment"===e.type||"annotation"===e.type||"variant"===e.type||"wig"===e.type||"interact"===e.type,createMenuItem(e,t){const i=ft("<div>");return i.text(e),{object:i,click:t}}};function Ui({trackView:e,label:t,option:i}){const n=ft("<div>");return n.text(t),{object:n,click:()=>e.presentColorPicker(i)}}function Vi(e){return e.trackView.viewports[0].$trackLabel.text()}class qi{constructor(e,t,i){this.browser=e,this.$container=ft("<div>",{class:"igv-generic-dialog-container"}),t.append(this.$container),this.$container.offset({left:0,top:0});const n=ft("<div>",{class:"igv-generic-dialog-header"});this.$container.append(n),ki.attachDialogCloseHandlerWithParent(n[0],(()=>{this.$minimum_input.val(void 0),this.$maximum_input.val(void 0),this.$container.offset({left:0,top:0}),this.$container.hide()})),this.$minimum=ft("<div>",{class:"igv-generic-dialog-label-input"}),this.$container.append(this.$minimum);const r=ft("<div>");r.text("Minimum"),this.$minimum.append(r),this.$minimum_input=ft("<input>"),this.$minimum.append(this.$minimum_input),this.$maximum=ft("<div>",{class:"igv-generic-dialog-label-input"}),this.$container.append(this.$maximum);const s=ft("<div>");s.text("Maximum"),this.$maximum.append(s),this.$maximum_input=ft("<input>"),this.$maximum.append(this.$maximum_input);const o=ft("<div>",{class:"igv-generic-dialog-ok-cancel"});this.$container.append(o),this.$ok=ft("<div>"),o.append(this.$ok),this.$ok.text("OK"),this.$cancel=ft("<div>"),o.append(this.$cancel),this.$cancel.text("Cancel"),this.$cancel.on("click",(()=>{this.$minimum_input.val(void 0),this.$maximum_input.val(void 0),this.$container.offset({left:0,top:0}),this.$container.hide()})),Si(this.$container.get(0),n.get(0)),this.$container.hide()}configure(e){const t=e.dataRange();let i,n;t?(i=t.min,n=t.max):(i=0,n=100),this.$minimum_input.val(i),this.$maximum_input.val(n),this.$minimum_input.unbind(),this.$minimum_input.on("keyup",(t=>{13===t.keyCode&&this.processResults(e)})),this.$maximum_input.unbind(),this.$maximum_input.on("keyup",(t=>{13===t.keyCode&&this.processResults(e)})),this.$ok.unbind(),this.$ok.on("click",(t=>{this.processResults(e)}))}processResults(e){const t=Number(this.$minimum_input.val()),i=Number(this.$maximum_input.val());isNaN(t)||isNaN(i)?this.browser.alert.present(new Error("Must input numeric values"),void 0):e.setDataRange(t,i),this.$minimum_input.val(void 0),this.$maximum_input.val(void 0),this.$container.offset({left:0,top:0}),this.$container.hide()}present(e){const 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i,n,r=e.max_chain_length,s=e.strstart,o=e.prev_length,a=e.nice_match;const l=e.strstart>e.w_size-pr?e.strstart-(e.w_size-pr):0,h=e.window,c=e.w_mask,d=e.prev,u=e.strstart+fr;let f=h[s+o-1],p=h[s+o];e.prev_length>=e.good_match&&(r>>=2),a>e.lookahead&&(a=e.lookahead);do{if(i=t,h[i+o]===p&&h[i+o-1]===f&&h[i]===h[s]&&h[++i]===h[s+1]){s+=2,i++;do{}while(h[++s]===h[++i]&&h[++s]===h[++i]&&h[++s]===h[++i]&&h[++s]===h[++i]&&h[++s]===h[++i]&&h[++s]===h[++i]&&h[++s]===h[++i]&&h[++s]===h[++i]&&s<u);if(n=fr-(u-s),s=u-fr,n>o){if(e.match_start=t,o=n,n>=a)break;f=h[s+o-1],p=h[s+o]}}}while((t=d[t&c])>l&&0!=--r);return o<=e.lookahead?o:e.lookahead},Mr=e=>{const t=e.w_size;let i,n,r;do{if(n=e.window_size-e.lookahead-e.strstart,e.strstart>=t+(t-pr)&&(e.window.set(e.window.subarray(t,t+t-n),0),e.match_start-=t,e.strstart-=t,e.block_start-=t,e.insert>e.strstart&&(e.insert=e.strstart),_r(e),n+=t),0===e.strm.avail_in)break;if(i=Er(e.strm,e.window,e.strstart+e.lookahead,n),e.lookahead+=i,e.lookahead+e.insert>=3)for(r=e.strstart-e.insert,e.ins_h=e.window[r],e.ins_h=xr(e,e.ins_h,e.window[r+1]);e.insert&&(e.ins_h=xr(e,e.ins_h,e.window[r+3-1]),e.prev[r&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=r,r++,e.insert--,!(e.lookahead+e.insert<3)););}while(e.lookahead<pr&&0!==e.strm.avail_in)},Rr=(e,t)=>{let i,n,r,s=e.pending_buf_size-5>e.w_size?e.w_size:e.pending_buf_size-5,o=0,a=e.strm.avail_in;do{if(i=65535,r=e.bi_valid+42>>3,e.strm.avail_out<r)break;if(r=e.strm.avail_out-r,n=e.strstart-e.block_start,i>n+e.strm.avail_in&&(i=n+e.strm.avail_in),i>r&&(i=r),i<s&&(0===i&&t!==Kn||t===Qn||i!==n+e.strm.avail_in))break;o=t===Kn&&i===n+e.strm.avail_in?1:0,$n(e,0,0,o),e.pending_buf[e.pending-4]=i,e.pending_buf[e.pending-3]=i>>8,e.pending_buf[e.pending-2]=~i,e.pending_buf[e.pending-1]=~i>>8,kr(e.strm),n&&(n>i&&(n=i),e.strm.output.set(e.window.subarray(e.block_start,e.block_start+n),e.strm.next_out),e.strm.next_out+=n,e.strm.avail_out-=n,e.strm.total_out+=n,e.block_start+=n,i-=n),i&&(Er(e.strm,e.strm.output,e.strm.next_out,i),e.strm.next_out+=i,e.strm.avail_out-=i,e.strm.total_out+=i)}while(0===o);return a-=e.strm.avail_in,a&&(a>=e.w_size?(e.matches=2,e.window.set(e.strm.input.subarray(e.strm.next_in-e.w_size,e.strm.next_in),0),e.strstart=e.w_size,e.insert=e.strstart):(e.window_size-e.strstart<=a&&(e.strstart-=e.w_size,e.window.set(e.window.subarray(e.w_size,e.w_size+e.strstart),0),e.matches<2&&e.matches++,e.insert>e.strstart&&(e.insert=e.strstart)),e.window.set(e.strm.input.subarray(e.strm.next_in-a,e.strm.next_in),e.strstart),e.strstart+=a,e.insert+=a>e.w_size-e.insert?e.w_size-e.insert:a),e.block_start=e.strstart),e.high_water<e.strstart&&(e.high_water=e.strstart),o?4:t!==Qn&&t!==Kn&&0===e.strm.avail_in&&e.strstart===e.block_start?2:(r=e.window_size-e.strstart,e.strm.avail_in>r&&e.block_start>=e.w_size&&(e.block_start-=e.w_size,e.strstart-=e.w_size,e.window.set(e.window.subarray(e.w_size,e.w_size+e.strstart),0),e.matches<2&&e.matches++,r+=e.w_size,e.insert>e.strstart&&(e.insert=e.strstart)),r>e.strm.avail_in&&(r=e.strm.avail_in),r&&(Er(e.strm,e.window,e.strstart,r),e.strstart+=r,e.insert+=r>e.w_size-e.insert?e.w_size-e.insert:r),e.high_water<e.strstart&&(e.high_water=e.strstart),r=e.bi_valid+42>>3,r=e.pending_buf_size-r>65535?65535:e.pending_buf_size-r,s=r>e.w_size?e.w_size:r,n=e.strstart-e.block_start,(n>=s||(n||t===Kn)&&t!==Qn&&0===e.strm.avail_in&&n<=r)&&(i=n>r?r:n,o=t===Kn&&0===e.strm.avail_in&&i===n?1:0,$n(e,e.block_start,i,o),e.block_start+=i,kr(e.strm)),o?3:1)},Lr=(e,t)=>{let i,n;for(;;){if(e.lookahead<pr){if(Mr(e),e.lookahead<pr&&t===Qn)return 1;if(0===e.lookahead)break}if(i=0,e.lookahead>=3&&(e.ins_h=xr(e,e.ins_h,e.window[e.strstart+3-1]),i=e.prev[e.strstart&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=e.strstart),0!==i&&e.strstart-i<=e.w_size-pr&&(e.match_length=Tr(e,i)),e.match_length>=3)if(n=Gn(e,e.strstart-e.match_start,e.match_length-3),e.lookahead-=e.match_length,e.match_length<=e.max_lazy_match&&e.lookahead>=3){e.match_length--;do{e.strstart++,e.ins_h=xr(e,e.ins_h,e.window[e.strstart+3-1]),i=e.prev[e.strstart&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=e.strstart}while(0!=--e.match_length);e.strstart++}else e.strstart+=e.match_length,e.match_length=0,e.ins_h=e.window[e.strstart],e.ins_h=xr(e,e.ins_h,e.window[e.strstart+1]);else n=Gn(e,0,e.window[e.strstart]),e.lookahead--,e.strstart++;if(n&&(Cr(e,!1),0===e.strm.avail_out))return 1}return e.insert=e.strstart<2?e.strstart:2,t===Kn?(Cr(e,!0),0===e.strm.avail_out?3:4):e.sym_next&&(Cr(e,!1),0===e.strm.avail_out)?1:2},Ir=(e,t)=>{let i,n,r;for(;;){if(e.lookahead<pr){if(Mr(e),e.lookahead<pr&&t===Qn)return 1;if(0===e.lookahead)break}if(i=0,e.lookahead>=3&&(e.ins_h=xr(e,e.ins_h,e.window[e.strstart+3-1]),i=e.prev[e.strstart&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=e.strstart),e.prev_length=e.match_length,e.prev_match=e.match_start,e.match_length=2,0!==i&&e.prev_length<e.max_lazy_match&&e.strstart-i<=e.w_size-pr&&(e.match_length=Tr(e,i),e.match_length<=5&&(e.strategy===or||3===e.match_length&&e.strstart-e.match_start>4096)&&(e.match_length=2)),e.prev_length>=3&&e.match_length<=e.prev_length){r=e.strstart+e.lookahead-3,n=Gn(e,e.strstart-1-e.prev_match,e.prev_length-3),e.lookahead-=e.prev_length-1,e.prev_length-=2;do{++e.strstart<=r&&(e.ins_h=xr(e,e.ins_h,e.window[e.strstart+3-1]),i=e.prev[e.strstart&e.w_mask]=e.head[e.ins_h],e.head[e.ins_h]=e.strstart)}while(0!=--e.prev_length);if(e.match_available=0,e.match_length=2,e.strstart++,n&&(Cr(e,!1),0===e.strm.avail_out))return 1}else if(e.match_available){if(n=Gn(e,0,e.window[e.strstart-1]),n&&Cr(e,!1),e.strstart++,e.lookahead--,0===e.strm.avail_out)return 1}else e.match_available=1,e.strstart++,e.lookahead--}return e.match_available&&(n=Gn(e,0,e.window[e.strstart-1]),e.match_available=0),e.insert=e.strstart<2?e.strstart:2,t===Kn?(Cr(e,!0),0===e.strm.avail_out?3:4):e.sym_next&&(Cr(e,!1),0===e.strm.avail_out)?1:2};function Nr(e,t,i,n,r){this.good_length=e,this.max_lazy=t,this.nice_length=i,this.max_chain=n,this.func=r}const Fr=[new Nr(0,0,0,0,Rr),new Nr(4,4,8,4,Lr),new Nr(4,5,16,8,Lr),new Nr(4,6,32,32,Lr),new Nr(4,4,16,16,Ir),new Nr(8,16,32,32,Ir),new Nr(8,16,128,128,Ir),new Nr(8,32,128,256,Ir),new Nr(32,128,258,1024,Ir),new Nr(32,258,258,4096,Ir)];function Br(){this.strm=null,this.status=0,this.pending_buf=null,this.pending_buf_size=0,this.pending_out=0,this.pending=0,this.wrap=0,this.gzhead=null,this.gzindex=0,this.method=ur,this.last_flush=-1,this.w_size=0,this.w_bits=0,this.w_mask=0,this.window=null,this.window_size=0,this.prev=null,this.head=null,this.ins_h=0,this.hash_size=0,this.hash_bits=0,this.hash_mask=0,this.hash_shift=0,this.block_start=0,this.match_length=0,this.prev_match=0,this.match_available=0,this.strstart=0,this.match_start=0,this.lookahead=0,this.prev_length=0,this.max_chain_length=0,this.max_lazy_match=0,this.level=0,this.strategy=0,this.good_match=0,this.nice_match=0,this.dyn_ltree=new Uint16Array(1146),this.dyn_dtree=new Uint16Array(122),this.bl_tree=new Uint16Array(78),yr(this.dyn_ltree),yr(this.dyn_dtree),yr(this.bl_tree),this.l_desc=null,this.d_desc=null,this.bl_desc=null,this.bl_count=new Uint16Array(16),this.heap=new Uint16Array(573),yr(this.heap),this.heap_len=0,this.heap_max=0,this.depth=new Uint16Array(573),yr(this.depth),this.sym_buf=0,this.lit_bufsize=0,this.sym_next=0,this.sym_end=0,this.opt_len=0,this.static_len=0,this.matches=0,this.insert=0,this.bi_buf=0,this.bi_valid=0}const Or=e=>{if(!e)return 1;const t=e.state;return!t||t.strm!==e||t.status!==gr&&57!==t.status&&69!==t.status&&73!==t.status&&91!==t.status&&103!==t.status&&t.status!==mr&&t.status!==br?1:0},Dr=e=>{if(Or(e))return wr(e,ir);e.total_in=e.total_out=0,e.data_type=dr;const t=e.state;return t.pending=0,t.pending_out=0,t.wrap<0&&(t.wrap=-t.wrap),t.status=2===t.wrap?57:t.wrap?gr:mr,e.adler=2===t.wrap?0:1,t.last_flush=-2,jn(t),er},Pr=e=>{const t=Dr(e);var i;return t===er&&((i=e.state).window_size=2*i.w_size,yr(i.head),i.max_lazy_match=Fr[i.level].max_lazy,i.good_match=Fr[i.level].good_length,i.nice_match=Fr[i.level].nice_length,i.max_chain_length=Fr[i.level].max_chain,i.strstart=0,i.block_start=0,i.lookahead=0,i.insert=0,i.match_length=i.prev_length=2,i.match_available=0,i.ins_h=0),t},zr=(e,t,i,n,r,s)=>{if(!e)return ir;let o=1;if(t===sr&&(t=6),n<0?(o=0,n=-n):n>15&&(o=2,n-=16),r<1||r>9||i!==ur||n<8||n>15||t<0||t>9||s<0||s>hr||8===n&&1!==o)return wr(e,ir);8===n&&(n=9);const a=new Br;return e.state=a,a.strm=e,a.status=gr,a.wrap=o,a.gzhead=null,a.w_bits=n,a.w_size=1<<a.w_bits,a.w_mask=a.w_size-1,a.hash_bits=r+7,a.hash_size=1<<a.hash_bits,a.hash_mask=a.hash_size-1,a.hash_shift=~~((a.hash_bits+3-1)/3),a.window=new Uint8Array(2*a.w_size),a.head=new Uint16Array(a.hash_size),a.prev=new Uint16Array(a.w_size),a.lit_bufsize=1<<r+6,a.pending_buf_size=4*a.lit_bufsize,a.pending_buf=new Uint8Array(a.pending_buf_size),a.sym_buf=a.lit_bufsize,a.sym_end=3*(a.lit_bufsize-1),a.level=t,a.strategy=s,a.method=i,Pr(e)};var Hr=(e,t)=>{let i=t.length;if(Or(e))return ir;const n=e.state,r=n.wrap;if(2===r||1===r&&n.status!==gr||n.lookahead)return ir;if(1===r&&(e.adler=zn(e.adler,t,i,0)),n.wrap=0,i>=n.w_size){0===r&&(yr(n.head),n.strstart=0,n.block_start=0,n.insert=0);let e=new Uint8Array(n.w_size);e.set(t.subarray(i-n.w_size,i),0),t=e,i=n.w_size}const s=e.avail_in,o=e.next_in,a=e.input;for(e.avail_in=i,e.next_in=0,e.input=t,Mr(n);n.lookahead>=3;){let e=n.strstart,t=n.lookahead-2;do{n.ins_h=xr(n,n.ins_h,n.window[e+3-1]),n.prev[e&n.w_mask]=n.head[n.ins_h],n.head[n.ins_h]=e,e++}while(--t);n.strstart=e,n.lookahead=2,Mr(n)}return n.strstart+=n.lookahead,n.block_start=n.strstart,n.insert=n.lookahead,n.lookahead=0,n.match_length=n.prev_length=2,n.match_available=0,e.next_in=o,e.input=a,e.avail_in=s,n.wrap=r,er},Ur={deflateInit:(e,t)=>zr(e,t,ur,15,8,cr),deflateInit2:zr,deflateReset:Pr,deflateResetKeep:Dr,deflateSetHeader:(e,t)=>Or(e)||2!==e.state.wrap?ir:(e.state.gzhead=t,er),deflate:(e,t)=>{if(Or(e)||t>Jn||t<0)return e?wr(e,ir):ir;const i=e.state;if(!e.output||0!==e.avail_in&&!e.input||i.status===br&&t!==Kn)return wr(e,0===e.avail_out?rr:ir);const n=i.last_flush;if(i.last_flush=t,0!==i.pending){if(kr(e),0===e.avail_out)return i.last_flush=-1,er}else if(0===e.avail_in&&vr(t)<=vr(n)&&t!==Kn)return wr(e,rr);if(i.status===br&&0!==e.avail_in)return wr(e,rr);if(i.status===gr&&0===i.wrap&&(i.status=mr),i.status===gr){let t=ur+(i.w_bits-8<<4)<<8,n=-1;if(n=i.strategy>=ar||i.level<2?0:i.level<6?1:6===i.level?2:3,t|=n<<6,0!==i.strstart&&(t|=32),t+=31-t%31,Ar(i,t),0!==i.strstart&&(Ar(i,e.adler>>>16),Ar(i,65535&e.adler)),e.adler=1,i.status=mr,kr(e),0!==i.pending)return i.last_flush=-1,er}if(57===i.status)if(e.adler=0,Sr(i,31),Sr(i,139),Sr(i,8),i.gzhead)Sr(i,(i.gzhead.text?1:0)+(i.gzhead.hcrc?2:0)+(i.gzhead.extra?4:0)+(i.gzhead.name?8:0)+(i.gzhead.comment?16:0)),Sr(i,255&i.gzhead.time),Sr(i,i.gzhead.time>>8&255),Sr(i,i.gzhead.time>>16&255),Sr(i,i.gzhead.time>>24&255),Sr(i,9===i.level?2:i.strategy>=ar||i.level<2?4:0),Sr(i,255&i.gzhead.os),i.gzhead.extra&&i.gzhead.extra.length&&(Sr(i,255&i.gzhead.extra.length),Sr(i,i.gzhead.extra.length>>8&255)),i.gzhead.hcrc&&(e.adler=Un(e.adler,i.pending_buf,i.pending,0)),i.gzindex=0,i.status=69;else if(Sr(i,0),Sr(i,0),Sr(i,0),Sr(i,0),Sr(i,0),Sr(i,9===i.level?2:i.strategy>=ar||i.level<2?4:0),Sr(i,3),i.status=mr,kr(e),0!==i.pending)return i.last_flush=-1,er;if(69===i.status){if(i.gzhead.extra){let t=i.pending,n=(65535&i.gzhead.extra.length)-i.gzindex;for(;i.pending+n>i.pending_buf_size;){let r=i.pending_buf_size-i.pending;if(i.pending_buf.set(i.gzhead.extra.subarray(i.gzindex,i.gzindex+r),i.pending),i.pending=i.pending_buf_size,i.gzhead.hcrc&&i.pending>t&&(e.adler=Un(e.adler,i.pending_buf,i.pending-t,t)),i.gzindex+=r,kr(e),0!==i.pending)return i.last_flush=-1,er;t=0,n-=r}let r=new Uint8Array(i.gzhead.extra);i.pending_buf.set(r.subarray(i.gzindex,i.gzindex+n),i.pending),i.pending+=n,i.gzhead.hcrc&&i.pending>t&&(e.adler=Un(e.adler,i.pending_buf,i.pending-t,t)),i.gzindex=0}i.status=73}if(73===i.status){if(i.gzhead.name){let t,n=i.pending;do{if(i.pending===i.pending_buf_size){if(i.gzhead.hcrc&&i.pending>n&&(e.adler=Un(e.adler,i.pending_buf,i.pending-n,n)),kr(e),0!==i.pending)return i.last_flush=-1,er;n=0}t=i.gzindex<i.gzhead.name.length?255&i.gzhead.name.charCodeAt(i.gzindex++):0,Sr(i,t)}while(0!==t);i.gzhead.hcrc&&i.pending>n&&(e.adler=Un(e.adler,i.pending_buf,i.pending-n,n)),i.gzindex=0}i.status=91}if(91===i.status){if(i.gzhead.comment){let t,n=i.pending;do{if(i.pending===i.pending_buf_size){if(i.gzhead.hcrc&&i.pending>n&&(e.adler=Un(e.adler,i.pending_buf,i.pending-n,n)),kr(e),0!==i.pending)return i.last_flush=-1,er;n=0}t=i.gzindex<i.gzhead.comment.length?255&i.gzhead.comment.charCodeAt(i.gzindex++):0,Sr(i,t)}while(0!==t);i.gzhead.hcrc&&i.pending>n&&(e.adler=Un(e.adler,i.pending_buf,i.pending-n,n))}i.status=103}if(103===i.status){if(i.gzhead.hcrc){if(i.pending+2>i.pending_buf_size&&(kr(e),0!==i.pending))return i.last_flush=-1,er;Sr(i,255&e.adler),Sr(i,e.adler>>8&255),e.adler=0}if(i.status=mr,kr(e),0!==i.pending)return i.last_flush=-1,er}if(0!==e.avail_in||0!==i.lookahead||t!==Qn&&i.status!==br){let n=0===i.level?Rr(i,t):i.strategy===ar?((e,t)=>{let i;for(;;){if(0===e.lookahead&&(Mr(e),0===e.lookahead)){if(t===Qn)return 1;break}if(e.match_length=0,i=Gn(e,0,e.window[e.strstart]),e.lookahead--,e.strstart++,i&&(Cr(e,!1),0===e.strm.avail_out))return 1}return e.insert=0,t===Kn?(Cr(e,!0),0===e.strm.avail_out?3:4):e.sym_next&&(Cr(e,!1),0===e.strm.avail_out)?1:2})(i,t):i.strategy===lr?((e,t)=>{let i,n,r,s;const o=e.window;for(;;){if(e.lookahead<=fr){if(Mr(e),e.lookahead<=fr&&t===Qn)return 1;if(0===e.lookahead)break}if(e.match_length=0,e.lookahead>=3&&e.strstart>0&&(r=e.strstart-1,n=o[r],n===o[++r]&&n===o[++r]&&n===o[++r])){s=e.strstart+fr;do{}while(n===o[++r]&&n===o[++r]&&n===o[++r]&&n===o[++r]&&n===o[++r]&&n===o[++r]&&n===o[++r]&&n===o[++r]&&r<s);e.match_length=fr-(s-r),e.match_length>e.lookahead&&(e.match_length=e.lookahead)}if(e.match_length>=3?(i=Gn(e,1,e.match_length-3),e.lookahead-=e.match_length,e.strstart+=e.match_length,e.match_length=0):(i=Gn(e,0,e.window[e.strstart]),e.lookahead--,e.strstart++),i&&(Cr(e,!1),0===e.strm.avail_out))return 1}return e.insert=0,t===Kn?(Cr(e,!0),0===e.strm.avail_out?3:4):e.sym_next&&(Cr(e,!1),0===e.strm.avail_out)?1:2})(i,t):Fr[i.level].func(i,t);if(3!==n&&4!==n||(i.status=br),1===n||3===n)return 0===e.avail_out&&(i.last_flush=-1),er;if(2===n&&(t===Xn?Zn(i):t!==Jn&&($n(i,0,0,!1),t===Yn&&(yr(i.head),0===i.lookahead&&(i.strstart=0,i.block_start=0,i.insert=0))),kr(e),0===e.avail_out))return i.last_flush=-1,er}return t!==Kn?er:i.wrap<=0?tr:(2===i.wrap?(Sr(i,255&e.adler),Sr(i,e.adler>>8&255),Sr(i,e.adler>>16&255),Sr(i,e.adler>>24&255),Sr(i,255&e.total_in),Sr(i,e.total_in>>8&255),Sr(i,e.total_in>>16&255),Sr(i,e.total_in>>24&255)):(Ar(i,e.adler>>>16),Ar(i,65535&e.adler)),kr(e),i.wrap>0&&(i.wrap=-i.wrap),0!==i.pending?er:tr)},deflateEnd:e=>{if(Or(e))return ir;const t=e.state.status;return e.state=null,t===mr?wr(e,nr):er},deflateSetDictionary:Hr,deflateInfo:"pako deflate (from Nodeca project)"};const Vr=(e,t)=>Object.prototype.hasOwnProperty.call(e,t);var qr={assign:function(e){const t=Array.prototype.slice.call(arguments,1);for(;t.length;){const i=t.shift();if(i){if("object"!=typeof i)throw new TypeError(i+"must be non-object");for(const t in i)Vr(i,t)&&(e[t]=i[t])}}return e},flattenChunks:e=>{let t=0;for(let i=0,n=e.length;i<n;i++)t+=e[i].length;const i=new Uint8Array(t);for(let t=0,n=0,r=e.length;t<r;t++){let r=e[t];i.set(r,n),n+=r.length}return i}};let jr=!0;try{String.fromCharCode.apply(null,new 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Na(){return"https:"===window.location.protocol||"localhost"===window.location.hostname}function Fa(e,t){if(e.length<6)return void console.log("Skipping line: "+e.join(" "));var i={chr1:e[0],start1:Number.parseInt(e[1]),end1:Number.parseInt(e[2]),chr2:e[3],start2:Number.parseInt(e[4]),end2:Number.parseInt(e[5])};if(isNaN(i.start1)||isNaN(i.end1)||isNaN(i.start2)||isNaN(i.end2))return;t&&void 0===t.hiccups&&(t.hiccups=!!t.columnNames&&Oa(t.columnNames));const n=t&&t.hiccups,r=n?6:10;if(n||(e.length>6&&"."!==e[6]&&(i.name=e[6]),e.length>7&&"."!==e[7]&&(i.score=Number(e[7])),e.length>8&&"."!==e[8]&&(i.strand1=e[8]),e.length>9&&"."!==e[9]&&(i.strand2=e[9])),t){const n=t.colorColumn;n&&n<e.length&&(i.color=Oo.createColorString(e[n]));const s=t.thicknessColumn;s&&s<e.length&&(i.thickness=e[s]),e.length>r&&t.columnNames&&t.columnNames.length===e.length&&(i.extras=e.slice(r))}return i.chr1===i.chr2&&(i.chr=i.chr1,i.start=Math.min(i.start1,i.start2),i.end=Math.max(i.end1,i.end2)),i}function Ba(e,t){if(!(e.length<8))return{chr:e[0],start:Number.parseInt(e[1]),end:Number.parseInt(e[2]),color:Oo.createColorString(e[6]),value:Number(e[7])}}function Oa(e){return e&&(e.includes("fdrDonut")||e.includes("fdr_donut"))}const Da=new Set(["narrowpeak","broadpeak","regionpeak","peaks","bedgraph","wig","gff3","gff","gtf","fusionjuncspan","refflat","seg","aed","bed","vcf","bb","bigbed","biginteract","biggenepred","bignarrowpeak","bw","bigwig","bam","tdf","refgene","genepred","genepredext","bedpe","bp","snp","rmsk","cram","gwas","maf","mut","tsv","hiccups","fasta","fa","fna","pytor"]);function Pa(e){return xa&&xa[e]?function(e){const t=e.fields,i=["chr","start","end"];for(let n=0;n<t.length;n++)for(let r of i)r===t[n]&&(e[r]=n);return e}(xa[e]):void 0}function za(e){var t,i;if((e=e.toLowerCase()).endsWith("refgene.txt.gz")||e.endsWith("refgene.txt.bgz")||e.endsWith("refgene.txt")||e.endsWith("refgene.sorted.txt.gz")||e.endsWith("refgene.sorted.txt.bgz"))return"refgene";switch((t=e.indexOf("?"))>0&&(e=e.substr(0,t)),e.endsWith(".gz")&&(e=e.substr(0,e.length-3)),(e.endsWith(".txt")||e.endsWith(".tab")||e.endsWith(".bgz"))&&(e=e.substr(0,e.length-4)),i=(t=e.lastIndexOf("."))<0?e:e.substr(t+1)){case"bw":return"bigwig";case"bb":return"bigbed";case"fasta":case"fa":case"fna":return"fasta";default:return Da.has(i)?i:void 0}}function Ha(e,t){if(ji(e)){if(e.includes("?")){const i=e.indexOf("?");return e.substring(0,i)+"."+t+e.substring(i)}return e+"."+t}}function Ua(e){if(function(e){e.featureType&&(e.type=e.type||e.featureType,e.featureType=void 0);"junctions"===e.type?e.type="junction":"bed"===e.type?(e.type="annotation",e.format=e.format||"bed"):"annotations"===e.type?e.type="annotation":"alignments"===e.type?e.type="alignment":"bam"===e.type?(e.type="alignment",e.format="bam"):"vcf"===e.type?(e.type="variant",e.format="vcf"):"t2d"===e.type?e.type="gwas":"FusionJuncSpan"!==e.type||e.format?"aed"===e.type&&(e.type="annotation",e.format=e.format||"aed"):e.format="fusionjuncspan"}(e),e.type)return e.type;if(e.format){switch(e.format.toLowerCase()){case"bw":case"bigwig":case"wig":case"bedgraph":case"tdf":return"wig";case"vcf":return"variant";case"seg":return"seg";case"mut":case"maf":return"mut";case"bam":case"cram":return"alignment";case"hiccups":case"bedpe":case"bedpe-loop":case"biginteract":return"interact";case"bp":return"arc";case"gwas":return"gwas";case"bed":case"bigbed":case"bb":case"biggenepred":case"bignarrowpeak":return"bedtype";case"fasta":return"sequence";case"pytor":return"cnvpytor";default:return"annotation"}}}async function Va(e){if(e.url){const t=await ea.loadString(e.url,Ca(e,{range:{start:0,size:1e3}}));if(t){if(Oa(t.split("\n")[0].split("\t")))return"hiccups"}}}function qa(e,t){xa[e]={fields:t}}var ja=Object.freeze({__proto__:null,knownFileExtensions:Da,getFormat:Pa,inferFileFormat:za,inferFileFormatFromHeader:Va,inferTrackType:Ua,inferIndexPath:Ha,registerFileFormats:qa});const $a=[["A","T"],["G","C"],["Y","R"],["W","S"],["K","M"],["D","H"],["B","V"]],Wa=new Map;for(let qw of $a){const jw=qw[0],$w=qw[1];Wa.set(jw,$w),Wa.set($w,jw),Wa.set(jw.toLowerCase(),$w.toLowerCase()),Wa.set($w.toLowerCase(),jw.toLowerCase())}function Ga(e){let t="",i=e.length;for(;i-- >0;){const n=e[i];t+=Wa.has(n)?Wa.get(n):n}return t}class Za{constructor(e,t,i){this.name=e,this.order=t,this.bpLength=i}}const Qa=Wi,Xa=new Set(["fastaURL","indexURL","cytobandURL","indexed"]);class Ya{constructor(e){this.fastaURL=e.fastaURL,this.withCredentials=e.withCredentials,this.chromosomeNames=[],this.chromosomes={},this.sequences=new Map;const t={};for(let i in e)e.hasOwnProperty(i)&&!Xa.has(i)&&(t[i]=e[i]);this.config=t}async init(){return this.loadAll()}async getSequence(e,t,i){if(!this.sequences.has(e))return;let n=this.sequences.get(e).find((e=>e.contains(t,i)));if(!n&&(n=this.sequences.get(e).find((e=>e.overlaps(t,i))),!n))return;t-=n.offset,i-=n.offset;let r="";if(t<0)for(let e=t;e<Math.min(i,0);e++)r+="*";if(i<=0)return Promise.resolve(r);const s=n.sequence,o=Math.min(i,s.length);return r+s.substring(t,o)}async loadAll(){let e;if(Ma(this.fastaURL)){let t=Ro(this.fastaURL);e="";for(let i of t)e+=String.fromCharCode(i)}else e=await ea.load(this.fastaURL,Ca(this.config));const t=new Set,i=Qa(e),n=i.length;let r,s=0,o=0,a={};for(;s<n;){if(r=i[s++].trim(),r.startsWith("#")||0===r.length);else if(r.startsWith(">")){a&&a.seq&&l.call(this,a,o++);const e=r.substr(1).split(/\s+/),t=e[0].split(":");if(a.chr=t[0],a.seq="",a.offset=0,t.length>1&&t[1].indexOf("-")>0){const i=t[1].split("-");2===i.length&&/^[0-9]+$/.test(i[0])&&/^[0-9]+$/.test(i[1]);const n=Number.parseInt(i[0]);if(Number.parseInt(i[1])>n&&(a.offset=n-1),e.length>1&&e[1].startsWith("@len="))try{a.length=parseInt(e[1].trim().substring(5))}catch(e){a.length=void 0,console.error(`Error parsing sequence length for ${r}`)}else a.length=void 0}}else a.seq+=r;a&&a.seq&&l.call(this,a,o)}function l(e,i){const n=e.length||e.offset+e.seq.length;if(t.has(e.chr)){const t=this.chromosomes[e.chr];t.bpLength=Math.max(t.bpLength,n)}else this.chromosomeNames.push(e.chr),this.sequences.set(e.chr,[]),this.chromosomes[e.chr]=new Za(e.chr,i,n),t.add(e.chr);this.sequences.get(e.chr).push(new Ka(e.offset,e.seq))}}}class Ka{constructor(e,t){this.offset=e,this.sequence=t}contains(e,t){return this.offset<=e&&this.end>=t}overlaps(e,t){return this.offset<t&&this.end>e}get end(){return this.offset+this.sequence.length}}const Ja=function(e,t,i,n){this.chr=e,this.start=t,this.end=i,this.features=n};Ja.prototype.contains=function(e,t,i){return this.chr===e&&this.start<=t&&this.end>=i},Ja.prototype.containsRange=function(e){return this.chr===e.chr&&this.start<=e.start&&this.end>=e.end};const el=Wi,tl=new Set(["fastaURL","indexURL","compressedIndexURL","cytobandURL","indexed"]);class il{constructor(e){this.file=e.fastaURL,this.indexFile=e.indexURL||e.indexFile||this.file+".fai",this.compressedIndexFile=e.compressedIndexURL||!1,this.withCredentials=e.withCredentials,this.chromosomeNames=[],this.chromosomes={},this.sequences={},this.offsets={};const t={};for(let i in e)e.hasOwnProperty(i)&&!tl.has(i)&&(t[i]=e[i]);this.config=t}async init(){return this.getIndex()}async getSequence(e,t,i){if(!(this.interval&&this.interval.contains(e,t,i))){let n=t,r=i;if(i-t<5e4){const e=i-t,s=Math.round(t+e/2);n=Math.max(0,s-25e3),r=s+25e3}const s=await this.readSequence(e,n,r);this.interval=new Ja(e,n,r,s)}const n=t-this.interval.start,r=i-t;return this.interval.features?this.interval.features.substr(n,r):null}async getIndex(){if(this.index)return this.index;{const e=await ea.load(this.indexFile,Ca(this.config)),t=el(e),i=t.length;let n=0,r=0;for(this.index={};n<i;){const e=t[n++].split("\t");if(5===e.length){const t=e[0],i=parseInt(e[1]),n={size:i,position:parseInt(e[2]),basesPerLine:parseInt(e[3]),bytesPerLine:parseInt(e[4])};this.chromosomeNames.push(t),this.index[t]=n,this.chromosomes[t]=new Za(t,r++,i)}}return this.index}}async getCompressedIndex(){if(this.compressedIndex)return this.compressedIndex;if(!this.compressedIndexFile)return this.compressedIndex=[],this.compressedIndex;this.compressedIndex=[];const e=await ea.loadArrayBuffer(this.compressedIndexFile,Ca(this.config)),t=e.byteLength;if(t<8)return console.log("Cannot parse GZI index file: length ("+t+" bytes) is insufficient to determine content of index."),this.compressedIndex;const i=e.slice(0,8),n=Number(new DataView(i).getBigUint64(0,!0)),r=8+2*n*8;if(t!=r)return console.log("Incorrect file size of reference genome index. Expected : "+r+". Received : "+t),this.compressedIndex;this.compressedIndex.push([0,0]);for(let t=0;t<n;t++){const i=8+2*t*8,n=8+2*t*8+16,r=e.slice(i,n),s=new DataView(r),o=Number(s.getBigUint64(0,!0)),a=Number(s.getBigUint64(8,!0));this.compressedIndex.push([o,a])}return this.compressedIndex}async getRelevantCompressedBlockNumbers(e,t){if(e<0||t<0||t<e)return console.log("Incompatible query positions for reference-genome. Start:"+e+" | End:"+t),[];await this.getCompressedIndex();let i=[];const n=this.compressedIndex.length-1;if(0==this.compressedIndex.length)return console.log("Compressed index does not contain any content"),[];if(e>this.compressedIndex[n][1])return[n];let r=0,s=n,o=Math.floor(this.compressedIndex.length/2),a=this.compressedIndex.length+1,l=!1;for(let t=0;t<a;t++){const t=this.compressedIndex[o][1],i=o<this.compressedIndex.length-1?this.compressedIndex[o+1][1]:1/0;if(t<=e&&i>e){l=!0;break}t<e?r=o+1:s=o-1,o=Math.ceil((s-r)/2)+r}if(!l)return console.log("No blocks within compressed index found that correspond with query positions "+e+","+t),console.log(this.compressedIndex),[];i.push(o);for(let e=o+1;e<this.compressedIndex.length;e++){i.push(e);if(this.compressedIndex[e][1]>=t)break}const h=i[i.length-1];return h===this.compressedIndex.length-1&&this.compressedIndex[h][1]<t&&i.push(-1),i}async loadAndUncompressBlocks(e,t){if(await this.getCompressedIndex(),0==e.length)return"";let i=Array(e.length-1);for(let t=0;t<e.length-1;t++){const n=e[t],r=this.compressedIndex[n][0],s=e[t+1];let o=[];if(-1!=s){const e=this.compressedIndex[s][0]-r;o=await ea.loadArrayBuffer(this.file,Ca(this.config,{range:{start:r,size:e}}))}else o=await ea.loadArrayBuffer(this.file,Ca(this.config,{range:{start:r}}));const a=await So(o);i[t]=a}let n="";for(let e=0;e<i.length;e++)for(let t=0;t<i[e].length;t++){n+=String.fromCharCode(i[e][t])}const r=t-this.compressedIndex[e[0]][1];return n=n.substring(r),n}async readSequence(e,t,i){await this.getIndex(),await this.getCompressedIndex();const n=this.index[e];if(!n)return console.log("No index entry for chr: "+e),this.interval=new Ja(e,t,i,null),null;const r=Math.max(0,t),s=Math.min(n.size,i),o=n.bytesPerLine,a=n.basesPerLine,l=n.position,h=o-a,c=Math.floor(r/a),d=Math.floor(s/a),u=r-c*a,f=l+c*o+u,p=l+d*o+(s-d*a)-1,g=p-f+1;if(g<=0)return console.error("No sequence for "+e+":"+t+"-"+i),null;let m;if(this.compressedIndexFile){let e=await this.getRelevantCompressedBlockNumbers(f,p);if(0===e.length)return console.log("No blocks in the compressed index that correspond with the requested byte positions ("+f+","+p+")"),null;m=await this.loadAndUncompressBlocks(e,f)}else m=await ea.load(this.file,Ca(this.config,{range:{start:f,size:g}}));if(!m)return null;let b,w="",v=0,y=m.length;for(u>0&&(b=Math.min(s-r,a-u),w+=m.substr(v,b),v+=b+h);v<y;)b=Math.min(a,y-v),w+=m.substr(v,b),v+=b+h;return w}}const nl=Wi;class rl{constructor(e){this.url=e,this.chromosomeNames=[],this.chromosomes={}}async init(){return this.loadAll()}async getSequence(e,t,i){}async loadAll(){let e;if(Ma(this.url)){let t=Ro(this.fastaURL);e="";for(let i of t)e+=String.fromCharCode(i)}else e=await ea.load(this.url,{});this.chromosomeNames=[],this.chromosomes={};const t=nl(e);let i=0;for(let e of t){const t=e.split("\t");this.chromosomeNames.push(t[0]);const n=Number.parseInt(t[1]),r=new Za(t[0],i++,n);this.chromosomes[t[0]]=r}}}async function sl(e){let t;return t="chromsizes"===e.format?new rl(e.fastaURL):Ma(e.fastaURL)||!1===e.indexed?new Ya(e):new il(e),await t.init(),t}const ol={A:"rgb(  0, 200,   0)",C:"rgb(  0,0,200)",T:"rgb(255,0,0)",G:"rgb(209,113,  5)",N:"rgb(80,80,80)"},al=Number.MIN_SAFE_INTEGER,ll={TTT:"F",TTC:"F",TTA:"L",TTG:"L",CTT:"L",CTC:"L",CTA:"L",CTG:"L",ATT:"I",ATC:"I",ATA:"I",ATG:"M",GTT:"V",GTC:"V",GTA:"V",GTG:"V",TCT:"S",TCC:"S",TCA:"S",TCG:"S",CCT:"P",CCC:"P",CCA:"P",CCG:"P",ACT:"T",ACC:"T",ACA:"T",ACG:"T",GCT:"A",GCC:"A",GCA:"A",GCG:"A",TAT:"Y",TAC:"Y",TAA:"STOP",TAG:"STOP",CAT:"H",CAC:"H",CAA:"Q",CAG:"Q",AAT:"N",AAC:"N",AAA:"K",AAG:"K",GAT:"D",GAC:"D",GAA:"E",GAG:"E",TGT:"C",TGC:"C",TGA:"STOP",TGG:"W",CGT:"R",CGC:"R",CGA:"R",CGG:"R",AGT:"S",AGC:"S",AGA:"R",AGG:"R",GGT:"G",GGC:"G",GGA:"G",GGG:"G"},hl={},cl=["A","G","C","T","Y","R","W","S","K","M","D","V","H","B","N","X"],dl=["T","C","G","A","R","Y","W","S","M","K","H","B","D","V","N","X"];for(let Ww=0;Ww<cl.length;Ww++)hl[cl[Ww]]=dl[Ww],hl[cl[Ww].toLowerCase()]=dl[Ww].toLowerCase();const ul=115;class fl{constructor(e,t){this.config=e,this.browser=t,this.type="sequence",this.removable=void 0===e.removable||e.removable,this.name=e.name,this.id=e.id,this.sequenceType=e.sequenceType||"dna",this.disableButtons=!1,this.order=e.order||al,this.ignoreTrackMenu=!1,this.reversed=!0===e.reversed,this.frameTranslate=!0===e.frameTranslate,this.height=this.frameTranslate?ul:25,e.url&&(e.fastaURL=e.url),e.fastaURL||(this.id=e.id||"sequence")}menuItemList(){return[{name:this.reversed?"Forward":"Reverse",click:()=>{this.reversed=!this.reversed,this.trackView.repaintViews()}},{name:this.frameTranslate?"Close Translation":"Three-frame Translate",click:()=>{if(this.frameTranslate=!this.frameTranslate,this.frameTranslate){for(let e of this.trackView.viewports)e.setContentHeight(ul);this.trackView.setTrackHeight(ul)}else{for(let e of this.trackView.viewports)e.setContentHeight(25);this.trackView.setTrackHeight(25)}this.trackView.repaintViews()}}]}contextMenuItemList(e){const t=e.viewport;if(t.referenceFrame.bpPerPixel<=1){const e=t.getWidth()*t.referenceFrame.bpPerPixel,i=t.referenceFrame.chr,n=Math.floor(t.referenceFrame.start),r=Math.ceil(n+e),s=[{label:this.reversed?"View visible sequence (reversed)...":"View visible sequence...",click:async()=>{let e=await this.browser.genome.sequence.getSequence(i,n,r);e?this.reversed&&(e=Ga(e)):e="Unknown sequence",this.browser.alert.present(e)}}];return Na()&&s.push({label:"Copy visible sequence",click:async()=>{let e=await this.browser.genome.sequence.getSequence(i,n,r);e?this.reversed&&(e=Ga(e)):e="Unknown sequence";try{await navigator.clipboard.writeText(e)}catch(e){console.error(e),this.browser.alert.present(`error copying sequence to clipboard ${e}`)}}}),s.push("<hr/>"),s}}translateSequence(e){const t=[[],[],[]];for(let i of[0,1,2]){let n=i;for(;e.length-n>=3;){let r=e.slice(n,n+3);this.reversed&&(r=r.split("").reverse().join(""));const s=ll[r.toUpperCase()]||"";t[i].push({codons:r,aminoA:s}),n+=3}}return t}async getSequenceSource(){return this.config.fastaURL?(this.fasta||(this.fasta=new pl(this.config,this.browser.genome),await this.fasta.init()),this.fasta):this.browser.genome.sequence}async getFeatures(e,t,i,n){if(t=Math.floor(t),i=Math.floor(i),n&&n>10)return null;{const n=await this.getSequenceSource();return{bpStart:t,sequence:await n.getSequence(e,t,i)}}}draw(e){const t=e.context;if(e.features){let i=e.features.sequence;if(!i)return;this.reversed&&(i=i.split("").map((function(e){return hl[e]})).join(""));const n=e.features.bpStart,r=1+e.bpStart+e.pixelWidth*e.bpPerPixel;for(let s=Math.floor(e.bpStart);s<=r;s++){const r=Math.floor(s-n);if(r>=0&&r<i.length){const n=(s-e.bpStart)/e.bpPerPixel,o=1/e.bpPerPixel,a=i[r],l=this.fillColor(a.toUpperCase());if(e.bpPerPixel>.1)va.fillRect(t,n,5,o,10,{fillStyle:l});else{const i=n+.5*(o-t.measureText(a).width);"y"===e.axis?(t.save(),va.labelTransformWithContext(t,i),va.strokeText(t,a,i,15,{strokeStyle:l}),t.restore()):va.strokeText(t,a,i,15,{strokeStyle:l})}}}if(this.frameTranslate){let r=25;const s=this.translateSequence(i);for(let i=0;i<s.length;i++){const o=s[i];for(let s=0;s<o.length;s++){let a=0==s%2?"rgb(160,160,160)":"rgb(224,224,224)";const l=o[s],h=n+i+3*s-e.bpStart,c=Math.floor(h/e.bpPerPixel),d=Math.floor((h+3)/e.bpPerPixel),u=Math.round((c+d)/2);if(d<0)continue;if(c>e.pixelWidth)break;let f=l.aminoA;l.aminoA.indexOf("STOP")>-1?(a="rgb(255, 0, 0)",f="STOP"):"M"===l.aminoA&&(a="rgb(0, 153, 0)",f="START"),va.fillRect(t,c,r,d-c,25,{fillStyle:a}),e.bpPerPixel<=.1&&va.strokeText(t,f,u-t.measureText(f).width/2,r+15)}r+=30}}}}get supportsWholeGenome(){return!1}computePixelHeight(e){return this.height=this.frameTranslate?ul:25,this.height}fillColor(e){return this.color?this.color:"dna"===this.sequenceType?ol[e]||"gray":"rgb(0, 0, 150)"}getState(){const e={type:"sequence"};return this.order!==al&&(e.order=this.order),this.reversed&&(e.revealed=!0),e}}class pl{constructor(e,t){this.config=e,this.genome=t}async init(){this.fasta=await sl(this.config),this.chrNameMap=new Map;for(let e of this.fasta.chromosomeNames)this.chrNameMap.set(this.genome.getChromosomeName(e),e)}async getSequence(e,t,i){const n=this.chrNameMap.has(e)?this.chrNameMap.get(e):e;return this.fasta.getSequence(n,t,i)}}class gl{constructor(e,t,i,n){this.guid=_t.guid(),this.trackView=e,this.referenceFrame=i,this.browser=e.browser,this.$viewport=ft('<div class="igv-viewport">'),t.appendChild(this.$viewport.get(0)),e.track.height&&(this.$viewport.get(0).style.height=`${e.track.height}px`),e.track instanceof fl&&(this.alert=new Mi(this.$viewport.get(0))),this.contentTop=0,this.contentHeight=this.$viewport.height(),this.$viewport.width(n),this.initializationHelper()}initializationHelper(){}showMessage(e){this.messageDiv||(this.messageDiv=document.createElement("div"),this.messageDiv.className="igv-viewport-message",this.$viewport.append(ft(this.messageDiv))),this.messageDiv.textContent=e,this.messageDiv.style.display="inline-block"}hideMessage(e){this.messageDiv&&(this.messageDiv.style.display="none")}setTrackLabel(e){}startSpinner(){}stopSpinner(){}checkZoomIn(){return!0}shift(){}setTop(e){this.contentTop=e,this.$viewport.height()}async loadFeatures(){}clearCache(){}async repaint(){}draw(e,t,i){console.log("Viewport - draw(drawConfiguration, features, roiFeatures)")}checkContentHeight(e){let t=this.trackView.track;if(e=e||this.cachedFeatures,"FILL"===t.displayMode)this.setContentHeight(this.$viewport.height());else if("function"==typeof t.computePixelHeight&&e&&e.length>0){let i=t.computePixelHeight(e);i!==this.contentHeight&&this.setContentHeight(i)}}getContentHeight(){return this.contentHeight}setContentHeight(e){this.contentHeight=e}isLoading(){return!1}saveSVG(){}isVisible(){return this.$viewport.width()}setWidth(e){this.$viewport.width(e)}getWidth(){return this.$viewport.width()}getContentTop(){return this.contentTop}containsPosition(e,t){console.log("Viewport - containsPosition(chr, position)")}addMouseHandlers(){}removeMouseHandlers(){}dispose(){this.popover&&this.popover.dispose(),this.$viewport.get(0).remove();for(let e of Object.keys(this))this[e]=void 0}}
+/*!!
+     *  Canvas 2 Svg v1.0.19
+     *  A low level canvas to SVG converter. Uses a mock canvas context to build an SVG document.
+     *
+     *  Licensed under the MIT license:
+     *  http://www.opensource.org/licenses/mit-license.php
+     *
+     *  Author:
+     *  Kerry Liu
+     *
+     *  Copyright (c) 2014 Gliffy Inc.
+     */function ml(e,t){var i,n=Object.keys(t);for(i=0;i<n.length;i++)e=e.replace(new RegExp("\\{"+n[i]+"\\}","gi"),t[n[i]]);return e}function bl(e){var t,i,n;if(!e)throw new Error("cannot create a random attribute name for an undefined object");t="ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz",i="";do{for(i="",n=0;n<12;n++)i+=t[Math.floor(51*Math.random())]}while(e[i]);return i}function wl(e){var t={alphabetic:"alphabetic",hanging:"hanging",top:"text-before-edge",bottom:"text-after-edge",middle:"central"};return t[e]||t.alphabetic}function vl(e){var t=Math.sqrt(e[0]*e[0]+e[1]*e[1]);return[e[0]/t,e[1]/t]}const yl=function(e,t){var i,n,r,s={};for(e=e.split(","),t=t||10,i=0;i<e.length;i+=2)n="&"+e[i+1]+";",r=parseInt(e[i],t),s[n]="&#"+r+";";return 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stroke"},font:{canvas:"10px sans-serif"},shadowColor:{canvas:"#000000"},shadowOffsetX:{canvas:0},shadowOffsetY:{canvas:0},shadowBlur:{canvas:0},textAlign:{canvas:"start"},textBaseline:{canvas:"alphabetic"},lineDash:{svgAttr:"stroke-dasharray",canvas:[],svg:null,apply:"stroke"}};class xl{constructor(e,t){this.__root=e,this.__ctx=t}addColorStop(e,t){var i,n=this.__ctx.__createElement("stop");n.setAttribute("offset",e),t&&-1!==t.indexOf("rgba")?(i=/rgba\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d?\.?\d*)\s*\)/gi.exec(t),n.setAttribute("stop-color",ml("rgb({r},{g},{b})",{r:i[1],g:i[2],b:i[3]})),n.setAttribute("stop-opacity",i[4])):n.setAttribute("stop-color",t),this.__root.appendChild(n)}}class kl{constructor(e,t){this.__root=e,this.__ctx=t}}class Cl{constructor(e){if(!(this instanceof Cl))return new 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0!==e.id?e.id:e.fastaURL&&ji(e.fastaURL)?e.fastaURL:e.fastaURL&&e.fastaURL.name?e.fastaURL.name:("0000"+(Math.random()*Math.pow(36,4)<<0).toString(36)).slice(-4)}(e),this.sequence=t,this.chromosomeNames=t.chromosomeNames,this.chromosomes=t.chromosomes,this.featureDB=new Map,this.wholeGenomeView=void 0===e.wholeGenomeView||e.wholeGenomeView,this.wholeGenomeView&&Object.keys(t.chromosomes).length>1?function(e,t){let i;if(t.chromosomeOrder)Array.isArray(t.chromosomeOrder)?e.wgChromosomeNames=t.chromosomeOrder:e.wgChromosomeNames=t.chromosomeOrder.split(",").map((e=>e.trim())),i=e.wgChromosomeNames.map((t=>e.chromosomes[t])).filter((e=>void 0!==e));else{const t=Object.keys(e.chromosomes).map((t=>e.chromosomes[t].bpLength)).reduce(((e,t)=>Math.max(e,t)))/50;i=Object.values(e.chromosomes).filter((e=>e.bpLength>t));const n=i.filter((e=>r(e.name.replace("chr","")))),s=i.filter((e=>!r(e.name.replace("chr",""))));n.sort(((e,t)=>Number.parseInt(e.name.replace("chr",""))-Number.parseInt(t.name.replace("chr",""))));const o=n.map((e=>e.name));for(let e of s)o.push(e.name);e.wgChromosomeNames=o}const n=i.reduce(((e,t)=>e+t.bpLength),0);function r(e){return/^\d+$/.test(e)}e.chromosomes.all={name:"all",bpLength:n}}(this,e):this.wgChromosomeNames=t.chromosomeNames;var n={},r=this;n.all="all",this.chromosomeNames.forEach((function(e){var t=e.startsWith("chr")?e.substring(3):"chr"+e;n[t.toLowerCase()]=e,"chrM"===e&&(n.mt="chrM"),"MT"===e&&(n.chrm="MT"),n[e.toLowerCase()]=e})),i&&i.forEach((function(e){var t,i;for(i=0;i<e.length;i++)if(r.chromosomes[e[i]]){t=e[i];break}t&&e.forEach((function(e){e!==t&&(n[e.toLowerCase()]=t,n[e]=t)}))})),this.chrAliasTable=n}showWholeGenomeView(){return!1!==this.config.wholeGenomeView}toJSON(){return Object.assign({},this.config,{tracks:void 0})}getInitialLocus(){}getHomeChromosomeName(){return this.showWholeGenomeView()&&this.chromosomes.hasOwnProperty("all")?"all":this.chromosomeNames[0]}getChromosomeName(e){const t=e?this.chrAliasTable[e.toLowerCase()]:e;return t||e}getChromosome(e){return e=this.getChromosomeName(e),this.chromosomes[e]}getCytobands(e){return this.cytobands?this.cytobands[e]:null}getLongestChromosome(){var e,t=this.chromosomes;for(let n in t){if(t.hasOwnProperty(n)){var i=t[n];(void 0===e||i.bpLength>e.bpLength)&&(e=i)}return e}}getChromosomes(){return this.chromosomes}getGenomeCoordinate(e,t){var i=this.getCumulativeOffset(e);if(void 0!==i)return i+t}getChromosomeCoordinate(e){let t;void 0===this.cumulativeOffsets&&(this.cumulativeOffsets=computeCumulativeOffsets.call(this));let i=0;for(let n of this.wgChromosomeNames){const r=this.cumulativeOffsets[n];if(r>e){return{chr:t,position:e-i}}t=n,i=r}return{chr:this.wgChromosomeNames[this.wgChromosomeNames.length-1],position:0}}getCumulativeOffset(e){void 0===this.cumulativeOffsets&&(this.cumulativeOffsets=function(){let e=this,t={},i=0;for(let n of e.wgChromosomeNames){t[n]=Math.floor(i);i+=e.getChromosome(n).bpLength}return t}.call(this));const t=this.getChromosomeName(e);return this.cumulativeOffsets[t]}getGenomeLength(){let e=this;if(!this.bpLength){let t=0;e.wgChromosomeNames.forEach((function(i){let n=e.chromosomes[i];t+=n.bpLength})),this.bpLength=t}return this.bpLength}async getSequence(e,t,i){return e=this.getChromosomeName(e),this.sequence.getSequence(e,t,i)}addFeaturesToDB(e,t){const i=(e,t)=>{const i=this.featureDB.get(e);i&&(t=t.end-t.start>i.end-i.start?t:i),this.featureDB.set(e,t)};for(let n of e)if(n.name&&i(n.name.toUpperCase(),n),n.gene&&n.gene.name&&i(n.gene.name.toUpperCase(),n),t.searchableFields)for(let e of t.searchableFields){const t=n.getAttributeValue(e);t&&(t.indexOf(" ")>0?i(t.replaceAll(" ","+").toUpperCase(),n):i(t.toUpperCase(),n))}}}let Rl,Ll=0,Il=0;class Nl extends gl{constructor(e,t,i,n){super(e,t,i,n)}initializationHelper(){this.$spinner=ft("<div>",{class:"igv-loading-spinner-container"}),this.$viewport.append(this.$spinner),this.$spinner.append(ft("<div>"));const e=this.trackView.track;"sequence"!==e.type&&(this.$zoomInNotice=this.createZoomInNotice(this.$viewport)),e.name&&"sequence"!==e.id&&(this.$trackLabel=ft('<div class="igv-track-label">'),this.$viewport.append(this.$trackLabel),this.setTrackLabel(e.name),!1===this.browser.trackLabelsVisible&&this.$trackLabel.hide()),this.stopSpinner(),this.addMouseHandlers()}setContentHeight(e){super.setContentHeight(e),this.featureCache&&(this.featureCache.redraw=!0)}setTrackLabel(e){this.$trackLabel.empty(),this.$trackLabel.html(e);const t=this.$trackLabel.text();this.$trackLabel.attr("title",t)}startSpinner(){this.$spinner.show()}stopSpinner(){this.$spinner&&this.$spinner.hide()}checkZoomIn(){if(this.trackView.track&&"sequence"===this.trackView.track.type&&this.referenceFrame.bpPerPixel>10)return ft(this.canvas).remove(),this.canvas=void 0,!1;if(!this.viewIsReady())return!1;if((()=>{if("all"!==this.referenceFrame.chr.toLowerCase()||this.trackView.track.supportsWholeGenome){const e=this.trackView.track.visibilityWindow;return void 0!==e&&e>0&&this.referenceFrame.bpPerPixel*this.$viewport.width()>e}return!0})()){if(this.canvas&&(ft(this.canvas).remove(),this.canvas=void 0),this.trackView.track.autoHeight){const e=this.trackView.minHeight||0;this.setContentHeight(e)}return this.$zoomInNotice&&this.$zoomInNotice.show(),!1}return this.$zoomInNotice&&this.$zoomInNotice.hide(),!0}shift(){const e=this.referenceFrame;if(this.canvas&&this.canvas._data&&this.canvas._data.referenceFrame.chr===this.referenceFrame.chr&&this.canvas._data.bpPerPixel===e.bpPerPixel){const t=Math.round((this.canvas._data.bpStart-e.start)/e.bpPerPixel);this.canvas.style.left=t+"px"}}setTop(e){if(super.setTop(e),this.canvas){const t=this.$viewport.height(),i=e+this.canvas._data.pixelTop,n=i+this.canvas._data.pixelHeight;(i>0||n<t)&&this.repaint()}else this.repaint();let t=e+this.canvas._data.pixelTop;this.canvas.style.top=`${t}px`}async loadFeatures(){const e=this.referenceFrame,t=e.chr,i=this.browser.genome.getChromosome(t).bpLength,n=this.$viewport.width()*e.bpPerPixel,r=Math.floor(Math.max(0,e.start-n)),s=Math.ceil(Math.min(i,e.start+n+n));if(!this.loading||this.loading.start!==r||this.loading.end!==s){this.loading={start:r,end:s},this.startSpinner();try{const i=this.trackView.track,n=await this.getFeatures(i,t,r,s,e.bpPerPixel);if(n){let o=[];if(i.roiSets&&i.roiSets.length>0)for(let n of i.roiSets){const i=await n.getFeatures(t,r,s,e.bpPerPixel);o.push({track:n,features:i})}const a=i&&("wig"===i.type||"merged"===i.type);return this.featureCache=new Fl(t,r,s,e.bpPerPixel,n,o,a),this.loading=!1,this.hideMessage(),this.stopSpinner(),this.featureCache}}catch(e){this.trackView&&!0!==this.trackView.disposed&&(this.showMessage("Error loading track data"),this.browser.alert.present(e),console.error(e))}finally{this.loading=!1,this.stopSpinner()}}}repaintDimensions(){const e=Tl.isWholeGenomeView(this.referenceFrame.chr),t=e?this.$viewport.width():3*this.$viewport.width(),i=this.referenceFrame.bpPerPixel;return{bpStart:this.referenceFrame.start-(e?0:t/3*i),bpEnd:this.referenceFrame.end+(e?0:t/3*i),pixelWidth:t}}repaint(){if(void 0===this.featureCache)return;const{features:e,roiFeatures:t}=this.featureCache,{bpStart:i,bpEnd:n,pixelWidth:r}=this.repaintDimensions(),s=this.$viewport.height(),o=this.getContentHeight(),a=t?Math.max(o,s):o,l=Math.min(a,3*s);if(0===r||0===l)return void(this.canvas&&ft(this.canvas).remove());const h=Math.max(0,-this.contentTop-Math.floor(l/3)),c=this.referenceFrame.bpPerPixel,d=Math.round((i-this.referenceFrame.start)/c),u=(this.contentTop||0)+h,f=document.createElement("canvas");f.style.position="relative",f.style.display="block",f.style.width=r+"px",f.style.height=l+"px",f.style.left=d+"px",f.style.top=u+"px";const p="FILL"===this.trackView.track.displayMode||!1!==this.trackView.track.supportHiDPI?window.devicePixelRatio:1;f.width=p*r,f.height=p*l;const g=f.getContext("2d");g.scale(p,p),g.translate(0,-h);const m={context:g,pixelXOffset:d,pixelWidth:r,pixelHeight:l,pixelTop:h,bpStart:i,bpEnd:n,bpPerPixel:c,referenceFrame:this.referenceFrame,selection:this.selection,viewport:this,viewportWidth:this.$viewport.width()};this.draw(m,e,t),this.canvas&&ft(this.canvas).remove(),f._data=m,this.canvas=f,this.$viewport.append(ft(f))}refresh(){if(!this.canvas||!this.featureCache)return;const e=this.canvas._data;e.context.clearRect(0,0,this.canvas.width,this.canvas.height);const{features:t,roiFeatures:i}=this.featureCache;this.draw(e,t,i)}draw(e,t,i){if(t&&(e.features=t,this.trackView.track.draw(e)),i&&i.length>0)for(let t of i)e.features=t.features,t.track.draw(e)}containsPosition(e,t){return this.referenceFrame.chr===e&&t>=this.referenceFrame.start&&t<=this.referenceFrame.calculateEnd(this.getWidth())}isLoading(){return this.loading}savePNG(){if(!this.canvas)return;const e=this.canvas._data,t=e?e.pixelTop:0,i=window.devicePixelRatio,n=this.$viewport.width()*i,r=this.$viewport.height()*i,s=-ft(this.canvas).position().left*i,o=(-this.contentTop-t)*i,a=this.canvas.getContext("2d").getImageData(s,o,n,r),l=document.createElement("canvas"),h=l.getContext("2d");l.width=a.width,l.height=a.height,h.putImageData(a,0,0);Yi((this.$trackLabel.text()?this.$trackLabel.text():"image")+".png",l.toDataURL("image/png"))}saveSVG(){let{width:e,height:t}=this.browser.columnContainer.getBoundingClientRect();const i=new Cl({width:e,height:8e3,backdropColor:"white",multiLocusGap:0,viewbox:{x:0,y:0,width:e,height:8e3}}),n={deltaX:32,deltaY:32};this.renderViewportToSVG(i,n),i.setHeight(t);const r=(this.trackView.track.name||this.trackView.track.id).replace(/\W/g,""),s=this.browser.referenceFrameList.indexOf(this.referenceFrame),o=i.getSerializedSvg(!0),a=URL.createObjectURL(new Blob([o],{type:"application/octet-stream"}));Yi(`${`${r}_referenceFrame_${s}_guid_${_t.guid()}`}.svg`,a)}renderViewportToSVG(e,{deltaX:t,deltaY:i}){if(this.$zoomInNotice&&this.$zoomInNotice.is(":visible"))return;const{width:n,height:r}=this.$viewport.get(0).getBoundingClientRect(),s=`${(this.trackView.track.name||this.trackView.track.id).replace(/\W/g,"")}_referenceFrame_${this.browser.referenceFrameList.indexOf(this.referenceFrame)}_guid_${_t.guid()}`;this.drawSVGWithContext(e,n,r,s,t,i+this.contentTop,-this.contentTop)}renderSVGContext(e,{deltaX:t,deltaY:i}){if(this.renderViewportToSVG(e,{deltaX:t,deltaY:i}),(!this.$zoomInNotice||!this.$zoomInNotice.is(":visible"))&&this.$trackLabel&&!0===this.browser.trackLabelsVisible){const{x:n,y:r,width:s,height:o}=_t.relativeDOMBBox(this.$viewport.get(0),this.$trackLabel.get(0));this.renderTrackLabelSVG(e,t+n,i+r,s,o)}}renderTrackLabelSVG(e,t,i,n,r){const s=`${(this.trackView.track.name||this.trackView.track.id).replace(/\W/g,"")}_track_label_guid_${_t.guid()}`;e.saveWithTranslationAndClipRect(s,t,i,n,r,0),e.fillStyle="white",e.fillRect(0,0,n,r),e.font="12px Arial",e.fillStyle="rgb(68, 68, 68)";const{width:o}=e.measureText(this.$trackLabel.text()),a=.25*(n-o),l=.7*(r-12);e.fillText(this.$trackLabel.text(),a,r-l),e.strokeStyle="rgb(68, 68, 68)",e.strokeRect(0,0,n,r),e.restore()}drawSVGWithContext(e,t,i,n,r,s,o){e.saveWithTranslationAndClipRect(n,r,s,t,i,o);let{start:a,bpPerPixel:l}=this.referenceFrame;const h={context:e,viewport:this,referenceFrame:this.referenceFrame,top:o,pixelTop:o,pixelWidth:t,pixelHeight:i,bpStart:a,bpEnd:a+t*l,bpPerPixel:l,viewportWidth:t,selection:this.selection},c=this.featureCache?this.featureCache.features:void 0,d=this.featureCache?this.featureCache.roiFeatures:void 0;this.draw(h,c,d),e.restore()}get cachedFeatures(){return this.featureCache?this.featureCache.features:[]}clearCache(){this.featureCache=void 0,this.canvas&&(this.canvas._data=void 0)}async getFeatures(e,t,i,n,r){if(this.featureCache&&this.featureCache.containsRange(t,i,n,r))return this.featureCache.features;if("function"==typeof e.getFeatures){const s=await e.getFeatures(t,i,n,r,this);return this.checkContentHeight(s),s}}needsRepaint(){if(!this.canvas)return!0;const e=this.canvas._data;return!e||this.referenceFrame.start<e.bpStart||this.referenceFrame.end>e.bpEnd||this.referenceFrame.chr!==e.referenceFrame.chr||this.referenceFrame.bpPerPixel!=e.bpPerPixel}needsReload(){if(!this.featureCache)return!0;const{chr:e,bpPerPixel:t}=this.referenceFrame,{bpStart:i,bpEnd:n}=this.repaintDimensions();return!this.featureCache.containsRange(e,i,n,t)}createZoomInNotice(e){const t=ft("<div>",{class:"igv-zoom-in-notice-container"});e.append(t);const i=ft("<div>");return t.append(i),i.text("Zoom in to see features"),t.hide(),t}viewIsReady(){return this.browser&&this.browser.referenceFrameList&&this.referenceFrame}addMouseHandlers(){const e=this.$viewport.get(0);this.addViewportContextMenuHandler(e);const t=e=>{this.enableClick=!0,this.browser.mouseDownOnViewport(e,this),_t.pageCoordinates(e)};e.addEventListener("mousedown",t),e.addEventListener("touchstart",t);const i=e=>{this.browser.dragObject||this.browser.isScrolling?(this.browser.cancelTrackPan(),this.enableClick=!1):(this.browser.cancelTrackPan(),this.browser.endTrackDrag())};e.addEventListener("mouseup",i),e.addEventListener("touchend",i),"function"==typeof this.trackView.track.hoverText&&e.addEventListener("mousemove",(e=>{if(0===e.buttons&&Date.now()-Il>100){Il=Date.now();const t=this.createClickState(e);if(t){const e=this.trackView.track.hoverText(t);e?this.$viewport[0].setAttribute("title",e):this.$viewport[0].removeAttribute("title")}}})),this.addViewportClickHandler(this.$viewport.get(0)),this.trackView.track.name&&"sequence"!==this.trackView.track.config.type&&this.addTrackLabelClickHandler(this.$trackLabel.get(0))}addViewportContextMenuHandler(e){e.addEventListener("contextmenu",(e=>{if(this.browser.dragObject)return!1;const t=this.createClickState(e);if(void 0===t)return!1;e.preventDefault();let i=[];if("function"==typeof this.trackView.track.contextMenuItemList){const e=this.trackView.track.contextMenuItemList(t);e&&(i=e)}i.length>0&&i.push({label:ft("<HR>")}),i.push({label:"Save Image (PNG)",click:()=>this.savePNG()}),i.push({label:"Save Image (SVG)",click:()=>this.saveSVG()}),this.browser.menuPopup.presentTrackContextMenu(e,i)}))}addViewportClickHandler(e){e.addEventListener("click",(e=>{if(this.enableClick&&this.canvas){if(3===e.which||e.ctrlKey)return;if(ft(".igv-popover").hide(),this.browser.dragObject||this.browser.isScrolling)return;e.preventDefault();const t=_t.translateMouseCoordinates(e,this.$viewport.get(0)).x,i=_t.translateMouseCoordinates(e,this.canvas).x,n=this.referenceFrame,r=Math.floor(n.start+n.toBP(i)),s=Date.now();if(s-Ll<this.browser.constants.doubleClickDelay){Rl&&(window.clearTimeout(Rl),Rl=void 0);const e=Math.round(n.start+n.toBP(t));let i;if("all"===this.referenceFrame.chr.toLowerCase()){const t=this.browser.genome.getChromosomeCoordinate(e).chr;if(1===this.browser.referenceFrameList.length)i=t;else{const e=this.browser.referenceFrameList.map((({locusSearchString:e})=>e));e[this.browser.referenceFrameList.indexOf(this.referenceFrame)]=t,i=e.join(" ")}this.browser.search(i)}else this.browser.zoomWithScaleFactor(.5,e,this.referenceFrame)}else e.shiftKey&&"function"==typeof this.trackView.track.shiftClick?this.trackView.track.shiftClick(r,e):"function"==typeof this.trackView.track.popupData&&(Rl=setTimeout((()=>{const t=this.getPopupContent(e);t&&(this.popover&&this.popover.dispose(),this.popover=new Oi(this.browser.columnContainer),this.popover.presentContentWithEvent(e,t)),window.clearTimeout(Rl),Rl=void 0}),this.browser.constants.doubleClickDelay));Ll=s}}))}addTrackLabelClickHandler(e){e.addEventListener("click",(e=>{e.stopPropagation();const{track:t}=this.trackView;let i;"function"==typeof t.description?i=t.description():t.description&&(i=`<div>${t.description}</div>`),i&&(this.popover&&this.popover.dispose(),this.popover=new Oi(this.browser.columnContainer,t.name||""),this.popover.presentContentWithEvent(e,i))}))}createClickState(e){if(!this.canvas)return;const t=this.referenceFrame,i=_t.translateMouseCoordinates(e,this.$viewport.get(0)),n=_t.translateMouseCoordinates(e,this.canvas),r=t.start+t.toBP(i.x);return{event:e,viewport:this,referenceFrame:t,genomicLocation:r,y:i.y-this.contentTop,canvasX:n.x,canvasY:n.y}}getPopupContent(e){const t=this.createClickState(e);if(void 0===t)return;let i=this.trackView.track;const n=i.popupData(t),r=this.browser.fireEvent("trackclick",[i,n]);let s;return void 0===r||!0===r?n&&n.length>0&&(s=n.map((e=>{if(e.name){const t=`<span>${e.name}</span>&nbsp&nbsp&nbsp${e.value}`;return`<div title="${e.value}">${t}</div>`}return"<hr>"===e?e:e.html?e.html:`<div title="${e}">${e}</div>`})).join("")):"string"==typeof r&&(s=r),s}}class Fl{constructor(e,t,i,n,r,s,o){this.chr=e,this.bpStart=t,this.bpEnd=i,this.bpPerPixel=n,this.features=r,this.roiFeatures=s,this.multiresolution=o}containsRange(e,t,i,n){const r=this.multiresolution?this.bpPerPixel/n:1;return t>=this.bpStart&&i<=this.bpEnd&&e===this.chr&&r>.5&&r<2}overlapsRange(e,t,i){return this.chr===e&&i>=this.bpStart&&t<=this.bpEnd}}function Bl(e,t){if(!(e.length<6))return{chr:e[0],start:e[1],end:e[2],chr1:e[8],start1:Number.parseInt(e[9]),end1:Number.parseInt(e[10]),chr2:e[13],start2:Number.parseInt(e[14]),end2:Number.parseInt(e[15]),name:e[3],score:Number(e[4]),value:Number(e[5]),color:"."===e[7]?void 0:"0"===e[7]?"rgb(0,0,0)":e[7]};console.log("Skipping line: "+e.join(" "))}const Ol=new Set(["transcript","primary_transcript","processed_transcript","mRNA","mrna","lnc_RNA","miRNA","ncRNA","rRNA","scRNA","snRNA","snoRNA","tRNA"]),Dl=new Set(["CDS","cds"]),Pl=new Set(["start_codon","stop_codon"]),zl=new Set(["5UTR","3UTR","UTR","five_prime_UTR","three_prime_UTR","3'-UTR","5'-UTR"]),Hl=new Set(["exon","coding-exon"]),Ul=new Set;for(let Gw of[Dl,Pl,zl,Hl])for(let Zw of Gw)Ul.add(Zw);function Vl(e){return e.includes("intron")}function ql(e){return Dl.has(e)||Pl.has(e)}function jl(e){return zl.has(e)}function $l(e){return Ol.has(e)||e.endsWith("RNA")||e.endsWith("transcript")}function Wl(e){return Ul.has(e)||e.endsWith("RNA")||Vl(e)}const Gl=new Set(["id","parent","name"]);class Zl{constructor(e){Object.assign(this,e)}popupData(e){const t=this.geneObject?this.geneObject.popupData():[];if(this.geneObject&&t.push("<hr/>"),this.name&&t.push({name:"Name",value:this.name}),t.push({name:"Type",value:this.type}),t.push({name:"Source",value:this.source}),void 0!==this.score&&t.push({name:"Score",value:this.score}),this.attributeString){const e=Jl(this.attributeString,this.delim);for(let[i,n]of e)void 0!==n&&n.length>0&&!Gl.has(i.toLowerCase())&&t.push({name:i+":",value:n})}return t.push({name:"Location",value:`${this.chr}:${$i(this.start+1)}-${$i(this.end)}`}),t}getAttributeValue(e){if(this.hasOwnProperty(e))return this[e];if(this._attributeCache||(this._attributeCache=new Map),this._attributeCache.has(e))return this._attributeCache.get(e);{const t=Jl(this.attributeString,this.delim);let i;for(let[n,r]of t)if(n===e){i=r;break}return this._attributeCache.set(e,i),i}}}class Ql extends Zl{constructor(e){super(e),this.exons=[],this.parts=[]}addExon(e){this.exons.push(e),this.start=Math.min(this.start,e.start),this.end=Math.max(this.end,e.end)}addPart(e){this.parts.push(e)}assembleParts(){if(0===this.parts.length)return;this.parts.sort((function(e,t){return e.start-t.start}));let e=this.parts[0].start,t=this.parts[0].end;for(let i=1;i<this.parts.length;i++){const n=this.parts[i];if(!Vl(n.type))if(n.start<=t)t=Math.max(t,n.end);else{this.findExonContaining({start:e,end:t})||this.exons.push({start:e,end:t,psuedo:!0}),e=n.start,t=n.end}}this.findExonContaining({start:e,end:t})||(this.exons.push({start:e,end:t,psuedo:!0}),this.start=Math.min(this.start,e),this.end=Math.max(this.end,t));for(let e of this.parts){const t=e.type;ql(t)?this.addCDS(e):jl(t)&&this.addUTR(e)}}findExonContaining({start:e,end:t}){for(let i of this.exons)if(i.end>=t&&i.start<=e)return i}addCDS(e){let t;const i=this.exons;for(let n of i)if(n.start<=e.start&&n.end>=e.end){t=n;break}t?(t.cdStart=t.cdStart?Math.min(e.start,t.cdStart):e.start,t.cdEnd=t.cdEnd?Math.max(e.end,t.cdEnd):e.end):console.error("No exon found spanning "+e.start+"-"+e.end),this.cdStart=this.cdStart?Math.min(e.start,this.cdStart):e.start,this.cdEnd=this.cdEnd?Math.max(e.end,this.cdEnd):e.end}addUTR(e){let t;const i=this.exons;for(let n=0;n<i.length;n++)if(i[n].start<=e.start&&i[n].end>=e.end){t=i[n];break}t?e.start===t.start&&e.end===t.end?t.utr=!0:(e.end<t.end&&(t.cdStart=e.end),e.start>t.start&&(t.cdEnd=e.start)):console.error("No exon found spanning "+cds.start+"-"+cds.end)}finish(){this.assembleParts();var e=this.cdStart,t=this.cdEnd;this.exons.sort((function(e,t){return e.start-t.start})),e&&this.exons.forEach((function(i){(i.end<e||i.start>t)&&(i.utr=!0)}))}popupData(e){const t=super.popupData(e);for(let i of this.exons)if(!i.pseudo&&e>=i.start&&e<i.end&&"function"==typeof i.popupData){t.push("<hr/>");const n=i.popupData(e);for(let e of n)t.push(e)}for(let i of this.parts)if(e>=i.start&&e<i.end&&"function"==typeof i.popupData){t.push("<hr/>");const n=i.popupData(e);for(let e of n)t.push(e)}return t}}function Xl(e,t){const i=t.format;if(e.length<9)return;const n="gff3"===i?"=":" ";return new Zl({source:ih(e[1]),type:e[2],chr:e[0],start:parseInt(e[3])-1,end:parseInt(e[4]),score:"."===e[5]?void 0:Number(e[5]),strand:e[6],phase:"."===e[7]?0:parseInt(e[7]),attributeString:e[8],delim:n})}function Yl(e,t){const i=Xl(e,t);if(!i)return;const n=Jl(i.attributeString,i.delim);for(let[e,t]of n){const n=e.toLowerCase();"color"===n||"colour"===n?i.color=Oo.createColorString(t):"ID"===e?i.id=t:"Parent"===e&&(i.parent=t)}return i}function Kl(e,t){const i=Xl(e,t);if(!i)return;const n=Jl(i.attributeString,i.delim);let r,s;switch(i.type){case"gene":r="gene_id";break;case"transcript":r="transcript_id",s="gene_id";break;default:s="transcript_id"}for(let[e,t]of n){const n=e.toLowerCase();"color"===n||"colour"===n?i.color=Oo.createColorString(t):e===r?i.id=t:e===s&&(i.parent=t)}return i}function Jl(e,t,i=!1){var n=[];for(let r of e.split(";")){r=r.trim();const e=r.indexOf(t);if(e>0&&e<r.length-1){const t=eh(ih(r.substring(0,e).trim(),i));let s=eh(ih(r.substring(e+1).trim(),i));n.push([t,s])}}return n}function eh(e){return e.startsWith('"')&&e.endsWith('"')&&(e=e.substr(1,e.length-2)),e}const th=new Map([["%09","\t"],["%0A","\n"],["%0D","\r"],["%25","%"],["%3B",";"],["%3D","="],["%26","&"],["%2C",","]]);function ih(e,t=!1){if(!e.includes("%"))return e;if(t)return decodeURIComponent(e);let i="";for(let t=0;t<e.length;t++)if(37===e.charCodeAt(t)&&t<e.length-2){const n=e.substring(t,t+3);th.has(n)?i+=th.get(n):i+=n,t+=2}else i+=e.charAt(t);return i}class nh{constructor(e){this.message=e}}function rh(e,t){if(e.length<3)return;t&&t.gffTags;const i=e[0],n=parseInt(e[1]),r=e.length>2?parseInt(e[2]):n+1;if(isNaN(n)||isNaN(r))return new nh("Unparsable bed record.");const s=new mh({chr:i,start:n,end:r,score:1e3});try{if(e.length>3){if(e[3].indexOf(";")>0&&e[3].indexOf("=")>0){const i=Jl(e[3],"=",!0);s.attributes={};for(let e of i)s.attributes[e[0]]=e[1],null!=t.nameField&&e[0]===t.nameField&&(s.name=e[1])}s.name||(s.name="."===e[3]?"":e[3])}if(e.length>4&&(s.score="."===e[4]?0:Number(e[4]),isNaN(s.score)))return s;if(e.length>5&&(s.strand=e[5],"."!==s.strand&&"+"!==s.strand&&"-"!==s.strand))return s;if(e.length>6&&(s.cdStart=parseInt(e[6]),isNaN(s.cdStart)))return s;if(e.length>7&&(s.cdEnd=parseInt(e[7]),isNaN(s.cdEnd)))return s;if(e.length>8&&"."!==e[8]&&"0"!==e[8]&&(s.color=Oo.createColorString(e[8])),e.length>11){const t=parseInt(e[9]);if(t>1e3)return s;const i=e[10].replace(/,$/,"").split(","),r=e[11].replace(/,$/,"").split(",");if(i.length!==r.length||t!==i.length)return s;const o=[];for(let e=0;e<t;e++){const t=n+parseInt(r[e]),s=t+parseInt(i[e]);o.push({start:t,end:s})}o.length>0&&(dh(o,s.cdStart,s.cdEnd),s.exons=o)}if(t){let i=t.thicknessColumn,n=t.colorColumn;n&&n<e.length&&(s.color=Oo.createColorString(e[n])),i&&i<e.length&&(s.thickness=e[i])}}catch(e){}return s}function sh(e,t){if(e.length<=15)return;return{swScore:Number.parseInt(e[1]),milliDiv:Number.parseInt(e[2]),milliDel:Number.parseInt(e[3]),milliIns:Number.parseInt(e[4]),chr:e[5],start:Number.parseInt(e[6]),end:Number.parseInt(e[7]),strand:e[9],repName:e[10],repClass:e[11],repFamily:e[12],repStart:Number.parseInt(e[13]),repEnd:Number.parseInt(e[14]),repLeft:Number.parseInt(e[15])}}function oh(e,t){var i=void 0===t.shift?0:1;if(e.length<=9+i)return;const n=parseInt(e[5+i]),r=parseInt(e[6+i]);var s={name:e[0+i],chr:e[1+i],strand:e[2+i],start:parseInt(e[3+i]),end:parseInt(e[4+i]),cdStart:n,cdEnd:r,id:e[0+i]};const o=ch(parseInt(e[7+i]),e[8+i],e[9+i]);return dh(o,n,r),s.exons=o,s}function ah(e,t){var i=void 0===t.shift?0:1;if(e.length<=11+i)return;const n=parseInt(e[5+i]),r=parseInt(e[6+i]),s={name:e[11+i],chr:e[1+i],strand:e[2+i],start:parseInt(e[3+i]),end:parseInt(e[4+i]),cdStart:n,cdEnd:r,id:e[0+i]},o=ch(parseInt(e[7+i]),e[8+i],e[9+i]);return dh(o,n,r),s.exons=o,s}function lh(e,t){var i=void 0===t.shift?0:1;if(e.length<=10+i)return;const n=parseInt(e[6+i]),r=parseInt(e[7+i]);var s={name:e[0+i],id:e[1+i],chr:e[2+i],strand:e[3+i],start:parseInt(e[4+i]),end:parseInt(e[5+i]),cdStart:n,cdEnd:r};const o=ch(parseInt(e[8+i]),e[9+i],e[10+i]);return dh(o,n,r),s.exons=o,s}function hh(e,t){if(e.length<21)return;const i=e[13],n=parseInt(e[15]),r=parseInt(e[16]),s=e[8].charAt(0),o=parseInt(e[17]),a=[],l=e[20].replace(/,$/,"").split(","),h=e[18].replace(/,$/,"").split(",");for(let e=0;e<o;e++){const t=parseInt(l[e]),i=t+parseInt(h[e]);a.push({start:t,end:i})}return new bh({chr:i,start:n,end:r,strand:s,exons:a,tokens:e})}function ch(e,t,i){const n=parseInt(e),r=t.replace(/,$/,"").split(","),s=i.replace(/,$/,"").split(","),o=[];for(let e=0;e<n;e++){const t=parseInt(r[e]),i=parseInt(s[e]);o.push({start:t,end:i})}return o}function dh(e,t,i){for(let n of e){const e=n.end,r=n.start;e<t||r>i?n.utr=!0:(t>=r&&t<=e&&(n.cdStart=t),i>=r&&i<=e&&(n.cdEnd=i))}}function uh(e,t){var i,n,r,s,o,a,l;if(!(e.length<9))return i=e[0],n=parseInt(e[1]),r=parseInt(e[2]),o=e[3],a=Number(e[4]),s=e[5].trim(),l=Number(e[6]),0===a&&(a=l),{chr:i,start:n,end:r,name:o,score:a,strand:s,signal:l,pValue:Number(e[7]),qValue:Number(e[8])}}function fh(e,t){if(e.length<=3)return;const i={chr:e[0],start:parseInt(e[1]),end:parseInt(e[2]),value:Number(e[3])};if(t){let n=t.colorColumn;n&&n<e.length&&(i.color=Oo.createColorString(e[n]))}return i}function ph(e,t){const i=t.wig;if(i&&"fixedStep"===i.format){const t=i.index*i.step+i.start,n=t+i.span,r=Number(e[0]);return++i.index,isNaN(r)?null:{chr:i.chrom,start:t,end:n,value:r}}if(i&&"variableStep"===i.format){if(e.length<2)return null;const t=parseInt(e[0],10)-1,n=t+i.span,r=Number(e[1]);return isNaN(r)?null:{chr:i.chrom,start:t,end:n,value:r}}return fh(e)}function gh(e,t){if(e.length<6)return;const i=["bin","chr","start","end","name","score","strand","refNCBI","refUCSC","observed","molType","class","valid","avHet","avHetSE","func","locType","weight","exceptions","submitterCount","submitters","alleleFreqCount","alleles","alleleNs","alleleFreqs","bitfields"],n={chr:e[1],start:Number.parseInt(e[2]),end:Number.parseInt(e[3]),name:e[4],score:Number.parseInt(e[5])},r=Math.min(e.length,i.length);for(let t=6;t<r;t++)n[i[t]]=e[t];return n}class mh{constructor(e){Object.assign(this,e)}getAttributeValue(e){return this.hasOwnProperty(e)?this[e]:this.attributes?this.attributes[e]:void 0}}class bh{constructor(e){Object.assign(this,e)}get score(){const e=this.tokens,t=parseInt(e[0]),i=parseInt(e[2]),n=parseInt(e[1]),r=parseInt(e[4]),s=parseInt(e[6]),o=parseInt(e[10]);return Math.floor(1e3*(t+i-n-r-s)/o)}get matches(){return this.tokens[0]}get misMatches(){return this.tokens[1]}get repMatches(){return this.tokens[2]}get nCount(){return this.tokens[3]}get qNumInsert(){return this.tokens[4]}get qBaseInsert(){return this.tokens[5]}get tNumInsert(){return this.tokens[6]}get tBaseInsert(){return this.tokens[7]}popupData(){return[{name:"chr",value:this.chr},{name:"start",value:this.start+1},{name:"end",value:this.end},{name:"strand",value:this.strand},{name:"score",value:this.score},{name:"match",value:this.matches},{name:"mis-match",value:this.misMatches},{name:"rep. match",value:this.repMatches},{name:"N's",value:this.nCount},{name:"Q gap count",value:this.qNumInsert},{name:"Q gap bases",value:this.qBaseInsert},{name:"T gap count",value:this.tNumInsert},{name:"T gap bases",value:this.tBaseInsert}]}}function wh(e,t){if(!(e.length<7)){var i=e[0],n=e[1],r=parseInt(e[2]),s=parseInt(e[3]),o=parseInt(e[4]),a=parseInt(e[5]),l=e[6],h={chr:i,name:n,junction_left:r,junction_right:s,num_junction_reads:o,num_spanning_frags:a,spanning_frag_coords:[],start:-1,end:-1},c=r,d=s;if(a>0)for(var u=l.split(","),f=0;f<u.length;f++){var p=u[f].split("-"),g=p[0],m=p[1];g<c&&(c=g),m>d&&(d=m),h.spanning_frag_coords.push({left:g,right:m})}return h.start=c,h.end=d,h}}function vh(e,t){if(e.length<7)return null;const i={chr:e[0],start:parseInt(e[1])-1,end:parseInt(e[2]),"Strongest SNP-risk allele":e[3],"Disease/Phenotype":e[4],"P-value":e[5],"Odds ratio or beta":e[6]};return e.length>6&&(i.PUBMEDID=`<a target = "blank" href = "https://www.ncbi.nlm.nih.gov/pubmed/${e[7]}">${e[7]}</a>`),i}function yh(e,t){const i=t.customFormat;if(e.length<i.fields.length)return;const n=i.coords||0,r=e[i.chr],s=parseInt(e[i.start])-n,o={chr:r,start:s,end:void 0!==i.end?parseInt(e[i.end]):s+1};return i.fields&&i.fields.forEach((function(t,n){n!==i.chr&&n!==i.start&&n!==i.end&&(o[t]=e[n])})),o}function _h(e,t){const i=t.columnNames;if(!i)throw Error("Sample names are not defined.   Missing column headers?");const n=i.length-3,r=e[0],s=parseInt(e[1]),o=parseInt(e[2]),a=e.slice(3).map(Number);return a.length==n?{chr:r,start:s,end:o,values:a}:void console.warn(`${r}:${s}-${o} row contains ${a.length} sample columns instead of the expected ${n} columns. Skipping...`)}class xh{constructor(e){this.config=e,this.header={},e.nameField&&(this.header.nameField=e.nameField),this.skipRows=0,e.decode?(this.decode=e.decode,this.delimiter=e.delimiter||"\t"):e.format&&(this.header.format=e.format.toLowerCase(),this.setDecoder(this.header.format)),this.delimiter||(this.delimiter="\t")}async parseHeader(e){let t,i,n=this.header;for(;void 0!==(i=await e.nextLine());)if(i.startsWith("track")||i.startsWith("#track")){let e=kh(i);Object.assign(n,e)}else if(i.startsWith("browser"));else if(i.startsWith("#columns")){let e=Ch(i);Object.assign(n,e)}else if(i.startsWith("##gff-version 3"))n.format="gff3";else if(i.startsWith("#gffTags"))n.gffTags=!0;else{if(i.startsWith("fixedStep")||i.startsWith("variableStep"))break;if(i.startsWith("#")){const e=i.split(this.delimiter||"\t");e.length>1&&(t=e)}else{this.setDecoder(n.format);const e=i.split(this.delimiter||"\t");try{const i=Object.assign({columnNames:t},n);if(this.decode(e,i))break;e.length>1&&(t=e)}catch(i){e.length>1&&(t=e)}}}if(t){n.columnNames=t;for(let e=0;e<t.length;e++)"color"===t[e]||"colour"===t[e]?n.colorColumn=e:"thickness"===t[e]&&(n.thicknessColumn=e)}return this.header=n,n}async parseFeatures(e){const t=[],i=this.decode,n=this.header.format,r=this.delimiter||"\t";let s,o=0,a=0;for(;void 0!==(s=await e.nextLine());){if(o++,o<=this.skipRows)continue;if(!s||s.startsWith("track")||s.startsWith("#")||s.startsWith("browser"))continue;if("wig"===n&&s.startsWith("fixedStep")){this.header.wig=Sh(s);continue}if("wig"===n&&s.startsWith("variableStep")){this.header.wig=Ah(s);continue}const e=s.split(r);if(e.length<1)continue;const l=i(e,this.header);l instanceof nh?(a++,a>0&&console.error(`Error parsing line '${s}': ${l.message}`)):l&&t.push(l)}return i===Fa&&function(e){if(0==e.length)return;const t=e[0];if(void 0===t.score&&void 0!==t.name){for(let t of e)if(!("number"==typeof(i=t.name)?i-i==0:"string"==typeof i&&""!==i.trim()&&(Number.isFinite?Number.isFinite(+i):isFinite(+i)))&&"."!==t.name)return;for(let t of e)t.score=Number(t.name),delete t.name}var i;const n=e.filter((e=>e.chr1!==e.chr2));for(let t of n){const i=Object.assign({},t);i.dup=!0,e.push(i),t.chr=t.chr1,t.start=t.start1,t.end=t.end1,i.chr=i.chr2,i.start=i.start2,i.end=i.end2}}(t),t}setDecoder(e){switch(e){case"narrowpeak":case"broadpeak":case"regionpeak":case"peaks":this.decode=uh,this.delimiter=this.config.delimiter||/\s+/;break;case"bedgraph":this.decode=fh,this.delimiter=/\s+/;break;case"wig":this.decode=ph,this.delimiter=this.config.delimiter||/\s+/;break;case"gff3":case"gff":this.decode=Yl,this.delimiter="\t";break;case"gtf":this.decode=Kl,this.delimiter="\t";break;case"fusionjuncspan":this.decode=wh,this.delimiter=this.config.delimiter||/\s+/;break;case"gtexgwas":this.skipRows=1,this.decode=vh,this.delimiter="\t";break;case"refflat":this.decode=lh,this.delimiter=this.config.delimiter||/\s+/;break;case"genepred":this.decode=oh,this.delimiter=this.config.delimiter||/\s+/;break;case"genepredext":this.decode=ah,this.delimiter=this.config.delimiter||/\s+/;break;case"ensgene":this.decode=oh,this.header.shift=1,this.delimiter=this.config.delimiter||/\s+/;break;case"refgene":this.decode=ah,this.delimiter=this.config.delimiter||/\s+/,this.header.shift=1;break;case"bed":this.decode=rh,this.delimiter=this.config.delimiter||/\s+/;break;case"bedpe":case"hiccups":this.decode=Fa,this.delimiter=this.config.delimiter||"\t";break;case"bedpe-domain":this.decode=Ba,this.headerLine=!0,this.delimiter=this.config.delimiter||"\t";break;case"bedpe-loop":this.decode=Fa,this.delimiter=this.config.delimiter||"\t",this.header={colorColumn:7};break;case"interact":this.decode=Bl,this.delimiter=this.config.delimiter||/\s+/;break;case"snp":this.decode=gh,this.delimiter="\t";break;case"rmsk":this.decode=sh,this.delimiter="\t";break;case"gcnv":this.decode=_h,this.delimiter="\t";break;default:const t=Pa(e);void 0!==t?(this.decode=yh,this.header.customFormat=t,this.delimiter=t.delimiter||"\t"):(this.decode=rh,this.delimiter=this.config.delimiter||/\s+/)}}}function kh(e){const t={},i=e.split(/(?:")([^"]+)(?:")|([^\s"]+)(?=\s+|$)/g);let n;const r=[];for(let e of i)e&&0!==e.trim().length&&(e.endsWith("=")?n=e:n?(r.push(n+e),n=void 0):r.push(e));for(let e of r){if(!e)return;var s=e.split("=",2);if(2===s.length){const e=s[0].trim(),i=s[1].trim();if(t.hasOwnProperty(e)){let n=t[e];Array.isArray(n)?n.push(i):t[e]=[n,i]}else t[e]=i}}return"interact"==t.type?t.format="interact":"gcnv"===t.type&&(t.format="gcnv"),t}function Ch(e){let t={},i=e.split(/\s+/);if(2===i.length){i[1].split(";").forEach((function(e){let i=e.split("=");"color"===i[0]?t.colorColumn=Number.parseInt(i[1])-1:"thickness"===i[0]&&(t.thicknessColumn=Number.parseInt(i[1])-1)}))}return t}function Sh(e){const t=e.split(/\s+/);return{format:"fixedStep",chrom:t[1].split("=")[1],start:parseInt(t[2].split("=")[1],10)-1,step:parseInt(t[3].split("=")[1],10),span:t.length>4?parseInt(t[4].split("=")[1],10):1,index:0}}function Ah(e){const t=e.split(/\s+/);return{format:"variableStep",chrom:t[1].split("=")[1],span:t.length>2?parseInt(t[2].split("=")[1],10):1}}class Eh{static defaults={height:50,autoHeight:!1,visibilityWindow:void 0,color:void 0,altColor:void 0,supportHiDPI:!0};constructor(e,t){this.browser=t,this.init(e)}init(e){this.config=e,e.displayMode&&(e.displayMode=e.displayMode.toUpperCase());const t=Object.assign({},Eh.defaults);if(this.constructor.defaults)for(let e of Object.keys(this.constructor.defaults))t[e]=this.constructor.defaults[e];for(let n of Object.keys(t))this[n]=e.hasOwnProperty(n)?e[n]:t[n],"color"!==n&&"altColor"!==n||(this[n]=ji(i=this[n])&&i.indexOf(",")>0&&!i.startsWith("rgb(")&&!i.startsWith("rgba(")?`rgb(${i})`:i);var i;e.name||e.label?this.name=e.name||e.label:Xi(e.url)?this.name=e.url.name:ji(e.url)&&!e.url.startsWith("data:")&&(this.name=Qi(e.url)),this.url=e.url,this.config.type&&(this.type=this.config.type),this.id=void 0===this.config.id?this.name:this.config.id,this.order=e.order,this.autoscaleGroup=e.autoscaleGroup,this.removable=void 0===e.removable||e.removable,this.minHeight=e.minHeight||Math.min(25,this.height),this.maxHeight=e.maxHeight||Math.max(1e3,this.height),e.onclick&&(this.onclick=e.onclick,e.onclick=void 0),e.description&&("function"==typeof e.description?this.description=e.description:this.description=()=>e.description),e.hoverTextFields?this.hoverText=Th.bind(this):"function"==typeof this.config.hoverText&&(this.hoverText=this.config.hoverText)}get name(){return this._name}set name(e){this._name=e,this.trackView&&this.trackView.setTrackLabelName(e)}updateConfig(e){this.init(e)}clearCachedFeatures(){this.trackView&&this.trackView.clearCachedFeatures()}updateViews(){this.trackView&&this.trackView.updateViews()}getState(){const e={};for(let i of Object.keys(this.config))i.startsWith("_")||(void 0===(t=this.config[i])||"function"==typeof t||t instanceof File||t instanceof Promise)||(e[i]=this.config[i]);var t;for(let t of Object.keys(e)){if(t.startsWith("_"))continue;const i=this[t];i&&(ka(i)||"boolean"==typeof i||"metadata"===t)&&(e[t]=i)}const i=Eh.defaults;if(this.constructor.defaults)for(let e of Object.keys(this.constructor.defaults))i[e]=this.constructor.defaults[e];for(let t of Object.keys(i))void 0!==this[t]&&i[t]!==this[t]&&(e[t]=this[t]);return!this.autoscale&&this.dataRange&&(e.min=this.dataRange.min,e.max=this.dataRange.max),e}get supportsWholeGenome(){return!0===this.config.supportsWholeGenome}hasSamples(){return!1}getGenomeId(){return this.browser.genome?this.browser.genome.id:void 0}setTrackProperties(e){if(this.disposed)return;const t={};let i;for(let n of Object.keys(e))switch(n.toLowerCase()){case"usescore":t.useScore=1===e[n]||"1"===e[n]||"on"===e[n]||!0===e[n];break;case"visibility":switch(e[n]){case"2":case"3":case"pack":case"full":t.displayMode="EXPANDED";break;case"4":case"squish":t.displayMode="SQUISHED";break;case"1":case"dense":t.displayMode="COLLAPSED"}break;case"color":case"altcolor":t[n]=e[n].startsWith("rgb(")?e[n]:"rgb("+e[n]+")";break;case"featurevisiblitywindow":case"visibilitywindow":t.visibilityWindow=Number.parseInt(e[n]);break;case"maxheightpixels":i=e[n].split(":"),3===i.length&&(t.minHeight=Number.parseInt(i[2]),t.height=Number.parseInt(i[1]),t.maxHeight=Number.parseInt(i[0]));break;case"viewlimits":if(!this.config.autoscale){i=e[n].split(":");let r,s=0;1==i.length?r=Number(i[0]):2==i.length&&(s=Number(i[0]),r=Number(i[1])),t.autoscale=!1,t.dataRange={min:s,max:r},this.viewLimitMin=s,this.viewLimitMax=r}case"name":t[n]=e[n];break;case"url":t.infoURL=e[n];break;case"type":const r=e[n];Mh.has(r)?t[n]=Mh.get(r):t[n]=r;break;case"graphtype":t.graphType=e[n];break;default:t[n]=e[n]}for(let e of Object.keys(t))if(!this.config.hasOwnProperty(e)||"name"===e&&this.config._derivedName){let i=t[e];if("true"===i&&(i=!0),"false"===i&&(i=!1),this[e]=i,"height"===e&&this.trackView)try{const e=Number.parseInt(i);this.trackView.setTrackHeight(e)}catch(e){console.error(e)}}}clickedFeatures(e){const t=e.viewport.cachedFeatures;if(!t||!Array.isArray(t)||0===t.length)return[];const i=e.genomicLocation,n=e.referenceFrame.bpPerPixel>.2?3*e.referenceFrame.bpPerPixel:.2;return ua(t,i-n,i+n)}extractPopupData(e,t){const i=new Set(["row","color","chr","start","end","cdStart","cdEnd","strand","alpha"]),n=[];let r,s;for(let t in e)if(e.hasOwnProperty(t)&&!i.has(t)&&ka(e[t])){let i=e[t];n.push({name:Zi(t),value:i}),"alleles"===t?r=e[t]:"alleleFreqs"===t&&(s=e[t])}if(r&&s){r.endsWith(",")&&(r=r.substr(0,r.length-1)),s.endsWith(",")&&(s=s.substr(0,s.length-1));let i=r.split(","),o=s.split(",");if(o.length>1){let r=[];for(let e=0;e<o.length;e++)r.push({a:i[e],af:Number(o[e])});r.sort((function(e,t){return e.af-t.af}));let s=r[r.length-1].a;if(1===s.length)for(let i=r.length-2;i>=0;i--){let o=r[i].a;if(1===o.length){t||(t=this.getGenomeId());const i=Eh.getCravatLink(e.chr,e.start+1,s,o,t);console.log(i),i&&(n.push("<hr/>"),n.push({html:i}),n.push("<hr/>"))}}}}if(e.attributes)for(let t of Object.keys(e.attributes))n.push({name:t,value:e.attributes[t]});let o=`${e.chr}:${$i(e.start+1)}-${$i(e.end)}`;return e.strand&&(o+=` (${e.strand})`),n.push({name:"Location",value:o}),n}description(){const e=(e,t)=>`<div class="igv-track-label-popup-shim"><b>${e}: </b>${t}</div>`;let t='<div class="igv-track-label-popup">';if(this.url?Xi(this.url)?t+=e("Filename",this.url.name):t+=e("URL",this.url):t=this.name,this.config){if(this.config.metadata)for(let i of Object.keys(this.config.metadata)){t+=e(i,this.config.metadata[i])}for(let i of Object.keys(this.config)){if(i.startsWith("_"))continue;let n=i.substr(0,1);if(n!==n.toLowerCase()){const n=this.config[i];n&&ka(n)&&(t+=e(i,n))}}}return t+="</div>",t}getColorForFeature(e){return"function"==typeof this.color?this.color(feature):this.color}dispose(){this.disposed=!0;for(let e of Object.keys(this))this[e]=void 0}static getCravatLink(e,t,i,n,r){if("hg38"===r||"GRCh38"===r){return`<a target="_blank" href="https://run.opencravat.org/result/nocache/variant.html?chrom=${e.startsWith("chr")?e:"chr"+e}&pos=${t}&ref_base=${i}&alt_base=${n}"><b>Cravat ${i}->${n}</b></a>`}}}function Th(e){if(!this.hoverTextFields)return;const t=this.clickedFeatures(e);if(t&&t.length>0){let e="";for(let i=0;i<t.length;i++){if(10===i){e+="; ...";break}if(!t[i])continue;const n=t[i]._f||t[i];e.length>0&&(e+="\n"),e="";for(let t of this.hoverTextFields)e.length>0&&(e+="\n"),n.hasOwnProperty(t)?e+=n[t]:"function"==typeof n.getAttribute&&(e+=n.getAttribute(t))}return e}}const Mh=new Map([["wiggle_0","wig"],["bed","bed"],["bigBed","bigBed"],["bigWig","bigWig"]]);class Rh{constructor(e){switch(this.type=e||"seg",this.type){case"mut":this.sampleColumn=3,this.chrColumn=0,this.startColumn=1,this.endColumn=2,this.dataColumn=4;break;case"maf":this.sampleColumn=15,this.chrColumn=4,this.startColumn=5,this.endColumn=6,this.dataColumn=8;break;default:this.sampleColumn=0,this.chrColumn=1,this.startColumn=2,this.endColumn=3}}async parseHeader(e){let t;for(;void 0!==(t=await e.nextLine());)if(!t.startsWith("#")){const e=t.split("\t");this.header={headings:e};break}return this.header}async parseFeatures(e){const t=[];let i;this.header||(this.header=await this.parseHeader(e)),"seg"===this.type&&(this.dataColumn=this.header.headings.length-1),this.header.headings.length>5&&(i=this.extractExtraColumns(this.header.headings));const n=this.header.headings[this.dataColumn];let r;for(;void 0!==(r=await e.nextLine());){const e=r.split("\t"),s="seg"===this.type?Number(e[this.dataColumn]):e[this.dataColumn];if(e.length>this.dataColumn){const r=new Lh({sample:e[this.sampleColumn],chr:e[this.chrColumn],start:parseInt(e[this.startColumn])-1,end:parseInt(e[this.endColumn]),value:s,valueColumnName:n});if(i){const t=this.extractExtraColumns(e);r.setAttributes({names:i,values:t})}t.push(r)}}return t}extractExtraColumns(e){const t=[];for(let i=0;i<e.length;i++)i!==this.chrColumn&&i!==this.startColumn&&i!==this.endColumn&&i!==this.sampleColumn&&t.push(e[i]);return t}}class Lh{constructor({sample:e,chr:t,start:i,end:n,value:r,valueColumnName:s}){this.sample=e,this.chr=t,this.start=i,this.end=n,this.value=r,this.valueColumnName=s}setAttributes({names:e,values:t}){this.attributeNames=e,this.attributeValues=t}getAttribute(e){if(this.attributeNames){const t=this.attributeNames.indexOf(e);if(t>=0)return this.attributeValues[t]}}popupData(e,t){const i=new Set(["chr","start","end","sample","value","row","color","sampleKey","uniqueSampleKey","sampleId","chromosome","uniquePatientKey"]),n=this.chr+":"+$i(this.start+1)+"-"+$i(this.end),r=[{name:"Sample",value:this.sample},{name:"Location",value:n},{name:this.valueColumnName?Zi(this.valueColumnName):"Value",value:this.value}];if("mut"===e&&"hg38"===t){const e=this.extractCravatLink(t);e&&(r.push("<hr/>"),r.push({html:e}),r.push("<hr/>"))}if(this.attributeNames&&this.attributeNames.length>0)for(let e=0;e<this.attributeNames.length;e++)!i.has(this.attributeNames[e])&this.valueColumnName!==this.attributeNames[e]&&r.push({name:Zi(this.attributeNames[e]),value:this.attributeValues[e]});return r}extractCravatLink(e){let t,i;if(this.attributeNames&&this.attributeNames.length>0)for(let n=0;n<this.attributeNames.length;n++)if(t||"Reference_Allele"!==this.attributeNames[n]||(t=this.attributeValues[n]),!i&&this.attributeNames[n].startsWith("Tumor_Seq_Allele")&&this.attributeValues[n]!==t&&(i=this.attributeValues[n]),t&&i)return Eh.getCravatLink(this.chr,this.start+1,t,i,e)}}function Ih(e){const t=new Nh;t.chr=e[0],t.pos=parseInt(e[1]),t.names=e[2],t.referenceBases=e[3],t.alternateBases=e[4],t.quality=e[5],t.filter=e[6],t.info={};const i=e[7];if(i)for(let e of i.split(";")){var n=e.split("=");t.info[n[0]]=n[1]}return t.init(),t}class Nh{init(){const e=this.referenceBases,t=this.alternateBases;if(this.info&&(this.info.VT?this.type=this.info.VT:this.info.SVTYPE?this.type="SV":this.info.PERIOD&&(this.type="STR")),void 0===this.type&&(this.type=function(e,t){const i=e.length;if(void 0===t)return"UNKNOWN";if(0===t.trim().length||"<NON_REF>"===t||"<*>"===t||"."===t)return"NONVARIANT";{const e=t.split(",").map((function(e){return 1===i&&1===e.length?"SNP":"<NON_REF>"===e?"NONVARIANT":"OTHER"}));let n=e[0];for(let t of e)if(t!==n)return"MIXED";return n}}(e,t)),"NONVARIANT"===this.type&&(this.heterozygosity=0),this.info.END)this.start=this.pos-1,this.info.CHR2&&this.info.CHR2!==this.chr?this.end=this.start+1:this.end=Number.parseInt(this.info.END);else if("NONVARIANT"===this.type)this.start=this.pos-1,this.end=this.start+e.length;else{const i=t.split(",").filter((e=>e.length>0));this.alleles=[],this.start=void 0,this.end=void 0;for(let t of i)if(this.alleles.push(t),"SV"!==this.type&&Bh(t)){let i=t.length,n=e.length;const r=Math.min(i,n);let s=0;for(;s<r&&e.charCodeAt(s)===t.charCodeAt(s);)s++,i--,n--;for(;i>0&&n>0;){const r=s+i-1,o=s+n-1;if(t.charCodeAt(r)!==e.charCodeAt(o))break;i--,n--}for(;i>0&&n>0;){const r=s,o=s;if(t.charCodeAt(r)!==e.charCodeAt(o))break;s++,i--,n--}const o=this.pos+s-1,a=o+n;this.start=void 0===this.start?o:Math.min(this.start,o),this.end=void 0===this.end?a:Math.max(this.end,a)}void 0===this.start&&(this.start=this.pos-1,this.end=this.pos)}}popupData(e,t){const i=`${$i(this.pos)}`,n=this.start===this.end?`${$i(this.start)} | ${$i(this.start+1)}`:`${$i(this.start+1)}-${$i(this.end)}`,r=[{name:"Chr",value:this.chr},{name:"Pos",value:i},{name:"Loc",value:n},{name:"ID",value:this.names?this.names:""},{name:"Ref",value:this.referenceBases},{name:"Alt",value:this.alternateBases.replace("<","&lt;")},{name:"Qual",value:this.quality},{name:"Filter",value:this.filter}];if("SNP"===this.type){let e=this.referenceBases;if(1===e.length){let i=this.alternateBases.split(",");for(let n of i)if(1===n.length){let i=Eh.getCravatLink(this.chr,this.pos,e,n,t);i&&(r.push("<hr/>"),r.push({html:i}))}}}if(this.hasOwnProperty("heterozygosity")&&r.push({name:"Heterozygosity",value:this.heterozygosity}),this.info){r.push({html:'<hr style="border-top: dotted 1px;border-color: #c9c3ba" />'});for(let e of Object.keys(this.info))r.push({name:e,value:Oh(decodeURIComponent(this.info[e]))})}return r}getInfo(e){return this.info?this.info[e]:void 0}isRefBlock(){return"NONVARIANT"===this.type}}const Fh=new Set(["A","C","T","G"].map((e=>e.charCodeAt(0))));function Bh(e){for(let t=0;t<e.length;t++)if(!Fh.has(e.charCodeAt(t)))return!1;return!0}function Oh(e,t){return void 0===t&&(t=","),Array.isArray(e)?e.join(t):e}class Dh{construtor(){}async parseHeader(e,t){const i={};i.chrAliasTable=new Map;let n=await e.nextLine();if(!n.startsWith("##fileformat"))throw new Error("Invalid VCF file: missing fileformat line");for(i.version=n.substr(13);void 0!==(n=await e.nextLine())&&n.startsWith("#");){let e;const s={};if(n.startsWith("##")){if(n.startsWith("##INFO")||n.startsWith("##FILTER")||n.startsWith("##FORMAT")){const t=n.indexOf("<"),o=n.lastIndexOf(">");if(!(t>2&&o>0)){console.log("Malformed VCF header line: "+n);continue}const a=n.substring(2,t-1);i[a]||(i[a]={});const l=Gi(n.substring(t+1,o-1),",");for(let t of l){var r=t.split("=");r.length>1&&("ID"===r[0]?e=r[1]:s[r[0]]=r[1])}e&&(i[a][e]=s)}else if(n.startsWith("##contig")&&t){const e=n.indexOf("<ID=");let r=n.indexOf(",",e);-1==r&&(r=n.indexOf(">",e));const s=n.substring(e+4,r),o=t.getChromosomeName(s);i.chrAliasTable.set(o,s)}}else if(n.startsWith("#CHROM")){const e=n.split("\t");if(e.length>8){i.callSets=[];for(let t=9;t<e.length;t++)i.callSets.push({id:t,name:e[t]})}}}return this.header=i,i}async parseFeatures(e){const t=[],i=this.header.callSets,n=8+(i?i.length+1:0);let r;for(;void 0!==(r=await e.nextLine());)if(r&&!r.startsWith("#")){const e=r.split("\t");if(e.length===n){const n=Ih(e);if(n.header=this.header,t.push(n),e.length>9){const t=Ph(e[8].split(":"));n.calls={};for(let r=9;r<e.length;r++){const s=e[r],o=i[r-9],a={callSetName:o.name,info:{}};n.calls[o.id]=a,s.split(":").forEach((function(e,i){if(i===t.genotypeIndex)a.genotype=[],e.split(/[\|\/]/).forEach((function(e){a.genotype.push("."===e?e:parseInt(e))}));else a.info[t.fields[i]]=e}))}}n.info&&n.info.CHR2&&n.info.END&&t.push(zh(n))}}return t}}function Ph(e){const t={genotypeIndex:-1,fields:e};for(let i=0;i<e.length;i++)"GT"===e[i]&&(t.genotypeIndex=i);return t}function zh(e){const t=e.info.CHR2,i=Number.parseInt(e.info.END);return{chr:t,start:i-1,end:i,_f:e}}class Hh{constructor(e){if(this.config=e,e.columns){if(void 0===e.columns.chromosome||void 0===e.columns.position||void 0===e.columns.value)throw Error("columns property must define chrCol, posCol, and valueCol");this.posCol=e.columns.position-1,this.chrCol=e.columns.chromosome-1,this.valueCol=e.columns.value-1}else this.posCol=2,this.chrCol=1,this.valueCol=3}async parseHeader(e){const t=await e.nextLine();return this.parseHeaderLine(t)}parseHeaderLine(e){if(this.columns=e.split(/\t/),!this.config.columns)for(let e=0;e<this.columns.length;e++){switch(this.columns[e].toLowerCase()){case"chr":case"chromosome":case"chr_id":this.chrCol=e;break;case"bp":case"pos":case"position":case"chr_pos":this.posCol=e;break;case"p":case"pval":case"pvalue":case"p-value":case"p.value":this.valueCol=e}}return this.columns}async parseFeatures(e){const t=[],i=e.nextLine();let n;for(this.columns||this.parseHeaderLine(i);void 0!==(n=e.nextLine());){const e=n.split(/\t/);if(e.length===this.columns.length){const i=e[this.chrCol],r=parseInt(e[this.posCol])-1,s=r+1,o=Number(e[this.valueCol]);t.push(new Uh({chr:i,start:r,end:s,value:o,line:n,columns:this.columns}))}}return t}}class Uh{constructor({chr:e,start:t,end:i,value:n,line:r,columns:s}){this.chr=e,this.start=t,this.end=i,this.value=n,this.line=r,this.columns=s}popupData(){const e=this.line.split(/\t/);return this.columns.map((function(t,i){return{name:t,value:e[i]}}))}getAttribute(e){const t=this.line.split(/\t/);for(let i=0;i<this.columns.length;i++)if(this.columns[i]===e)return t[i]}}var Vh=new RegExp("([^:]*)\\(([^)]*)\\)"),qh=new RegExp("([^:]*):([^(]*)\\(([^)]*)\\)");class jh{constructor(e){const t=e?e.decode:void 0;this.nameField=e?e.nameField:void 0,this.skipRows=0,this.decode=t||Xh,this.delimiter="\t"}async parseHeader(e){let t,i;for(;(t=await e.nextLine())&&(t.startsWith("track")||t.startsWith("#")||t.startsWith("browser"));)if(t.startsWith("track")||t.startsWith("#track")){let e=Gh(t);i?Object.assign(i,e):i=e}else if(t.startsWith("#columns")){let e=Zh(t);i?Object.assign(i,e):i=e}else t.startsWith("##gff-version 3")&&(this.format="gff3",i||(i={}),i.format="gff3");return this.header=i,i}async parseFeatures(e){const t=[],i=this.decode,n=this.delimiter||"\t";let r,s=0;for(;void 0!==(r=e.nextLine());){if(s++,s<=this.skipRows||r.startsWith("track")||r.startsWith("#")||r.startsWith("browser"))continue;let e=o();if(e.length<1)continue;if(!this.aed){this.aed=Wh(e);continue}const n=i.call(this,e,undefined);n&&t.push(n)}return t;function o(){for(var e,t,i=[],s="",o=!1;r||""===r;){for(e=0;e<r.length;e++)(t=r.charAt(e))===n?o?s+=t:(i.push(s),s=""):'"'===t?e+1<r.length&&'"'===r.charAt(e+1)?(o&&(s+='"'),e++):o=!o:s+=t;if(!o)break;s+="\n",r=nextLine()}return i.push(s),i}}}function $h(e){var t=qh.exec(e);if(t)return{namespace:t[1],name:t[2],type:t[3]};if(t=Vh.exec(e))return{namespace:"?",name:t[1],type:t[2]};throw new Error("Error parsing the header row of AED file - column not in ns:name(ns:type) format")}function Wh(e){var t,i,n;for(t={columns:[],metadata:{}},i=0;i<e.length;i++)n=$h(e[i]),t.columns.push(n);return t}function Gh(e){const t={},i=e.split(/(?:")([^"]+)(?:")|([^\s"]+)(?=\s+|$)/g);let n;const r=[];for(let e of i)e&&0!==e.trim().length&&(e.endsWith("=")>0?n=e:n?(r.push(n+e),n=void 0):r.push(e));for(let e of r){if(!e)return;var s=e.split("=",2);if(2===s.length){const e=s[0].trim(),i=s[1].trim();t[e]=i}}return t}function Zh(e){let t={},i=e.split(/\s+/);if(2===i.length){i[1].split(";").forEach((function(e){let i=e.split("=");"color"===i[0]?t.colorColumn=Number.parseInt(i[1])-1:"thickness"===i[0]&&(t.thicknessColumn=Number.parseInt(i[1])-1)}))}return t}function Qh(e,t){var i,n,r=e.columns;this.aed=e,this.allColumns=t,this.chr=null,this.start=null,this.end=null,this.score=1e3,this.strand=".",this.cdStart=null,this.cdEnd=null,this.name=null,this.color=null;for(let e=0;e<t.length;e++)if(i=t[e]){"aed:Integer"===(n=r[e]).type&&(i=parseInt(i));var s=[];if(n.namespace.length>0)for(let e=0;e<n.namespace.length;e++)s.push(n.namespace.charCodeAt(e));"bio"===n.namespace.trim()?"sequence"===n.name?this.chr=i:"start"===n.name?this.start=i:"end"===n.name?this.end=i:"cdsMin"===n.name?this.cdStart=i:"cdsMax"===n.name?this.cdEnd=i:"strand"===n.name&&(this.strand=i):"aed"===n.namespace?"name"===n.name&&(this.name=i):"style"===n.namespace&&"color"===n.name&&(this.color=Oo.createColorString(i))}}function Xh(e,t){var i,n,r,s,o,a,l=0,h=this.aed.columns;if(e.length===h.length){for(a=0;a<e.length;a++)s=h[a],""!==(r=e[a])&&l++,"name"===s.name&&"aed"===s.namespace?i=r:"value"===s.name&&"aed"===s.namespace&&(n=r);if(2===l&&i&&n)return o=$h(i),this.aed.metadata[o.namespace]||(this.aed.metadata[o.namespace]={}),void(this.aed.metadata[o.namespace][o.name]||(this.aed.metadata[o.namespace][o.name]={type:o.type,value:n}));var c=new Qh(this.aed,e);if(c.chr&&(c.start||0===c.start)&&c.end)return c;console.log("Cannot parse feature: "+e.join(","))}else console.log("Corrupted AED file row: "+e.join(","))}Qh.prototype.popupData=function(){for(var e=[],t=this.aed,i=0;i<this.allColumns.length;i++){var n=this.allColumns[i],r=t.columns[i].name;"sequence"!==r&&"color"!==r&&n&&e.push({name:r,value:n})}return e};class Yh{constructor(e,t){this.littleEndian=void 0===t||t,this.position=0,this.view=e,this.length=e.byteLength}available(){return this.length-this.position}remLength(){return this.length-this.position}hasNext(){return this.position<this.length-1}getByte(){var e=this.view.getUint8(this.position,this.littleEndian);return this.position++,e}getShort(){var e=this.view.getInt16(this.position,this.littleEndian);return this.position+=2,e}getUShort(){var e=this.view.getUint16(this.position,this.littleEndian);return this.position+=2,e}getInt(){var e=this.view.getInt32(this.position,this.littleEndian);return this.position+=4,e}getUInt(){var e=this.view.getUint32(this.position,this.littleEndian);return this.position+=4,e}getLong(){var e=[];e[0]=this.view.getUint8(this.position),e[1]=this.view.getUint8(this.position+1),e[2]=this.view.getUint8(this.position+2),e[3]=this.view.getUint8(this.position+3),e[4]=this.view.getUint8(this.position+4),e[5]=this.view.getUint8(this.position+5),e[6]=this.view.getUint8(this.position+6),e[7]=this.view.getUint8(this.position+7);var t=0;if(this.littleEndian)for(let i=e.length-1;i>=0;i--)t=256*t+e[i];else for(let i=0;i<e.length;i++)t=256*t+e[i];return this.position+=8,t}getString(e){for(var t,i="";0!==(t=this.view.getUint8(this.position++))&&(i+=String.fromCharCode(t),!e||i.length!==e););return i}getFixedLengthString(e){var t,i,n="";for(t=0;t<e;t++)(i=this.view.getUint8(this.position++))>0&&(n+=String.fromCharCode(i));return n}getFixedLengthTrimmedString(e){var t,i,n="";for(t=0;t<e;t++)(i=this.view.getUint8(this.position++))>32&&(n+=String.fromCharCode(i));return n}getFloat(){var e=this.view.getFloat32(this.position,this.littleEndian);return this.position+=4,e}getDouble(){var e=this.view.getFloat64(this.position,this.littleEndian);return this.position+=8,e}skip(e){return this.position+=e,this.position}getVPointer(){var e=this.position,t=this.view.getUint8(e+1)<<8|this.view.getUint8(e),i=4294967296*(255&this.view.getUint8(e+6))+16777216*(255&this.view.getUint8(e+5))+65536*(255&this.view.getUint8(e+4))+256*(255&this.view.getUint8(e+3))+(255&this.view.getUint8(e+2));return this.position+=8,new Kh(i,t)}}class Kh{constructor(e,t){this.block=e,this.offset=t}isLessThan(e){return this.block<e.block||this.block===e.block&&this.offset<e.offset}isGreaterThan(e){return this.block>e.block||this.block===e.block&&this.offset>e.offset}isEqualTo(e){return this.block===e.block&&this.offset===e.offset}print(){return this.block+":"+this.offset}}function Jh(e,t){if(0===e.length)return e;if(e.sort((function(e,t){const i=e.minv.block-t.minv.block;return 0!==i?i:e.minv.offset-t.minv.offset})),e.length<=1)return e;t&&(e=e.filter((e=>e.maxv.isGreaterThan(t))));const i=[];let n;for(let t of e)n&&ec(n,t)?t.maxv.isGreaterThan(n.maxv)&&(n.maxv=t.maxv):(i.push(t),n=t);return i}function ec(e,t){t.minv.block,e.maxv.block;return e.maxv.block-e.minv.block<5e6}class tc{constructor(e){this.tabix=!0}parse(e,t){const i=new Yh(new DataView(e)),n=i.getInt();if(21582659!==n)throw 38359875===n?Error("CSI version 2 is not supported.  Please enter an issue at https://github.com/igvteam/igv.js"):Error("Not a CSI index");this.indices=[],this.blockMin=Number.MAX_SAFE_INTEGER,this.lastBlockPosition=[],this.sequenceIndexMap={},this.minShift=i.getInt(),this.depth=i.getInt();const r=[];let s=0;if(i.getInt()>=28){i.getInt(),i.getInt(),i.getInt(),i.getInt(),i.getInt(),i.getInt();const e=i.getInt(),n=i.position+e;let s=0;for(;i.position<n;){let e=i.getString();t&&(e=t.getChromosomeName(e)),this.sequenceIndexMap[e]=s,r[s]=e,s++}}const o=this.bin_limit()+1,a=i.getInt();for(let e=0;e<a;e++){const t=[],n=[],r=i.getInt();for(let e=0;e<r;e++){const e=i.getInt();if(n[e]=i.getVPointer(),e>o)i.getInt(),i.getVPointer(),i.getVPointer(),i.getLong(),i.getLong();else{t[e]=[];const n=i.getInt();for(let r=0;r<n;r++){const n=i.getVPointer(),r=i.getVPointer();n&&r&&(n.block<this.blockMin&&(this.blockMin=n.block),r.block>s&&(s=r.block),t[e].push([n,r]))}}}r>0&&(this.indices[e]={binIndex:t,loffset:n})}this.lastBlockPosition=s}get chromosomeNames(){return Object.keys(this.sequenceIndexMap)}chunksForRange(e,t,i){const n=this.indices[e];if(n){const e=this.reg2bins(t,i);if(0==e.length)return[];const r=[];for(let t of e)for(let e=t[0];e<=t[1];e++)if(n.binIndex[e]){const t=n.binIndex[e];for(let i of t){const t=i[0],n=i[1];r.push({minv:t,maxv:n,bin:e})}}return Jh(r,n.loffset[e[0]])}return[]}reg2bins(e,t){(e-=1)<1&&(e=1),t>2**34&&(t=2**34),t-=1;let i=0,n=0,r=this.minShift+3*this.depth;const s=[];for(;i<=this.depth;r-=3,n+=1<<3*i,i+=1){const i=n+(e>>r),o=n+(t>>r);s.push([i,o])}return s}bin_limit(){return((1<<3*(this.depth+1))-1)/7}}class ic{constructor(){}async parse(e,t,i){const n=[];let r=Number.MAX_SAFE_INTEGER,s=0;const o=new Yh(new DataView(e)),a=o.getInt(),l={};if(!(21578050===a||t&&21578324===a))throw new Error(indexURL+" is not a "+(t?"tabix":"bai")+" file");{const e=o.getInt();if(t){o.getInt(),o.getInt(),o.getInt(),o.getInt(),o.getInt(),o.getInt(),o.getInt();for(let t=0;t<e;t++){let e=o.getString();i&&(e=i.getChromosomeName(e)),l[e]=t}}for(let t=0;t<e;t++){const e={},i=[],a=o.getInt();for(let t=0;t<a;t++){const t=o.getInt();if(37450===t)o.getInt(),o.getVPointer(),o.getVPointer(),o.getLong(),o.getLong();else{e[t]=[];const i=o.getInt();for(let n=0;n<i;n++){const i=o.getVPointer(),n=o.getVPointer();i&&n&&(i.block<r&&(r=i.block),n.block>s&&(s=n.block),e[t].push([i,n]))}}}const l=o.getInt();for(let e=0;e<l;e++){const e=o.getVPointer();i.push(e)}a>0&&(n[t]={binIndex:e,linearIndex:i})}this.firstBlockPosition=r,this.lastBlockPosition=s,this.indices=n,this.sequenceIndexMap=l,this.tabix=t}}get chromosomeNames(){return Object.keys(this.sequenceIndexMap)}chunksForRange(e,t,i){const n=this.indices[e];if(n){const e=function(e,t){const i=[];t>=1<<29&&(t=1<<29);return--t,i.push([0,0]),i.push([1+(e>>26),1+(t>>26)]),i.push([9+(e>>23),9+(t>>23)]),i.push([73+(e>>20),73+(t>>20)]),i.push([585+(e>>17),585+(t>>17)]),i.push([4681+(e>>14),4681+(t>>14)]),i}(t,i),r=[];for(let t of e)for(let e=t[0];e<=t[1];e++)if(n.binIndex[e]){const t=n.binIndex[e];for(let e of t){const t=e[0],i=e[1];r.push({minv:t,maxv:i})}}const s=n.linearIndex.length;let o;const a=Math.min(t>>14,s-1),l=Math.min(i>>14,s-1);for(let e=a;e<=l;e++){const t=n.linearIndex[e];if(t){o=t;break}}return Jh(r,o)}return[]}}class nc{constructor(){}async parse(e,t){let i=0;this.chrIndex={},this.lastBlockPosition=[];const n=new Yh(new DataView(e));!function(e){e.getInt(),e.getInt();const t=e.getInt();if(e.getString(),e.getLong(),e.getLong(),e.getString(),e.getInt(),t>=3){let t=e.getInt();for(;t-- >0;)e.getString(),e.getString()}}(n);let r=n.getInt();for(;r-- >0;){let e=n.getString();t&&(e=t.getChromosomeName(e));const r=n.getInt(),s=n.getInt(),o=n.getInt();n.getInt(),n.getInt();let a=n.getLong();const l=[];for(let e=0;e<s;e++){const e=n.getLong();l.push({min:a,max:e}),a=e,e>i&&(i=e)}this.chrIndex[e]={chr:e,blocks:l,longestFeature:o,binWidth:r}}this.lastBlockPosition=i}get chromosomeNames(){return Object.keys(this.chrIndex)}chunksForRange(e,t,i){const n=this.chrIndex[e];if(n){const e=n.blocks,r=n.longestFeature,s=n.binWidth,o=Math.max(t-r,0),a=Math.floor(o/s);if(a>=e.length)return[];{const t=Math.min(Math.floor((i-1)/s),e.length-1),n=e[a].min,r=e[t].max;if(0===r-n)return[];return[{minv:{block:n,offset:0},maxv:{block:r,offset:0}}]}}}}async function rc(e,t,i){let n=await ea.loadArrayBuffer(e,Ca(t)),r=new DataView(n);if(31===r.getUint8(0)&&139===r.getUint8(1)){n=So(n).buffer,r=new DataView(n)}switch(r.getInt32(0,!0)){case 21578050:return async function(e,t){const i=new ic;return await i.parse(e,!1,t),i}(n,i);case 21578324:return async function(e,t){const i=new ic;return await i.parse(e,!0,t),i}(n,i);case 21582659:return async function(e,t){const i=new tc;return i.parse(e,t),i}(n,i);case 1480870228:return async function(e,t){const i=new nc;return i.parse(e,t),i}(n,i);case 38359875:throw Error("CSI version 2 is not supported.");default:throw Error(`Unrecognized index type: ${e}`)}}function sc(e){return"string"==typeof e||e instanceof String?new oc(e):new ac(e)}class oc{constructor(e){this.data=e,this.ptr=0}nextLine(){var e=this.ptr,t=this.data.indexOf("\n",e),i=this.data;if(t>0)return this.ptr=t+1,t>e&&"\r"===i.charAt(t-1)?i.substring(e,t-1):i.substring(e,t);var n=i.length;return this.ptr=n,e>=n?void 0:i.substring(e)}}class ac{constructor(e){this.data=e,this.length=this.data.length,this.ptr=0}nextLine(){var e,t;if(t="",!(this.ptr>=this.length)){for(var i=this.ptr;i<this.length;i++)if("\r"!==(e=String.fromCharCode(this.data[i]))){if("\n"===e)break;t+=e}return this.ptr=i+1,t}}}class lc{constructor(e){this.config=e,this.filePtr=0,this.bufferPtr=0,this.buffer}async nextLine(){let e;try{for(;;){const t=this.buffer?this.buffer.length:0;for(;this.bufferPtr<t;){const t=String.fromCharCode(this.buffer[this.bufferPtr++]);if("\r"!==t){if("\n"===t)return e;e=e?e+t:t}}if(this.eof)return e;await this.readNextBlock()}}catch(t){return console.warn(t),this.eof=!0,e}}async readNextBlock(){const e=Ca(this.config,{range:{start:this.filePtr,size:26}}),t=Ao(await ea.loadArrayBuffer(this.config.url,e));if(0===t)this.eof=!0,this.buffer=void 0;else{const e=Ca(this.config,{range:{start:this.filePtr,size:t}}),i=await ea.loadArrayBuffer(this.config.url,e);i.byteLength<t&&(this.eof=!0),this.buffer=So(i),0==this.buffer.byteLength&&(this.eof=!0),this.bufferPtr=0,this.filePtr+=i.byteLength}}}const hc=e=>{const t=ArrayBuffer.isView(e)?e:new Uint8Array(e);return 1+(t[17]<<8|t[16])};class cc{constructor(e){this.config=e,this.cacheBlocks=0!=e.cacheBlocks,this.cache=void 0}async getData(e,t){const i=e.block,n=t.block,r=0===t.offset,s=await this.getInflatedBlocks(i,n,r);if(1===s.length)return s[0];let o=0;for(const e of s)o+=e.byteLength;const a=new Uint8Array(o);let l=0;for(const e of s)a.set(e,l),l+=e.byteLength;return a}async getInflatedBlocks(e,t,i){if(this.cacheBlocks){const n=this.cache;if(n&&n.startBlock<=e&&(n.endBlock>=t||i&&n.nextEndBlock===t)){const i=e-n.startBlock,r=t-n.startBlock;return uc(n.buffer,i,r)}{let r;if(!n||n.startBlock>t||n.endBlock<e)r=await this.loadBLockData(e,t,{skipEnd:i});else{const s=[];if(e<n.startBlock){const t=await this.loadBLockData(e,n.startBlock,{skipEnd:!0});s.push(t)}let o;if(e<=n.startBlock&&t>=n.endBlock)o=n.buffer;else{const i=Math.max(0,e-n.startBlock);let r;if(t>=n.endBlock)r=n.buffer.byteLength;else{const e=dc(n.buffer);for(let i=0;i<e.length-1;i++)if(n.startBlock+e[i]===t){r=e[i+1];break}}o=n.buffer.slice(i,r)}if(s.push(o),t>n.endBlock){const e=await this.loadBLockData(n.endBlock,t,{skipStart:!0,skipEnd:i});s.push(e)}r=function(e){if(1===e.length)return e[0];let t=0;for(const i of e)t+=i.byteLength;const i=new Uint8Array(t);let n=0;for(const t of e)i.set(new Uint8Array(t),n),n+=t.byteLength;return i.buffer}(s)}let s=t;if(i){const e=dc(r);t=e[e.length-1]}return this.cache={startBlock:e,endBlock:t,nextEndBlock:s,buffer:r},uc(r)}}return uc(await this.loadBLockData(e,t,{skipEnd:i}))}async loadBLockData(e,t,i){const n=this.config,r=i&&i.skipStart;let s=0;if(!(i&&i.skipEnd)){const e=Ca(n,{range:{start:t,size:26}}),i=await ea.loadArrayBuffer(n.url,e);s=hc(i)}if(r){const t=Ca(n,{range:{start:e,size:26}}),i=await ea.loadArrayBuffer(n.url,t);e+=hc(i)}const o=Ca(n,{range:{start:e,size:t+s-e}});return ea.loadArrayBuffer(n.url,o)}}function dc(e){const t=e.byteLength;let i=0;const n=[0];for(;i<t;){const r=new Uint8Array(e,i);i+=1+(r[17]<<8|r[16]),i<t&&n.push(i)}return n}function uc(e,t,i){const n=[];let r=t=t||0;const s=e.byteLength-18;for(;r<s;)try{const t=new Uint8Array(e,r,18),s=t[11]<<8|t[10],o=t[17]<<8|t[16],a=12+s+r,l=e.byteLength-a,h=o-s-18;if(l<h||h<=0)break;const c=new Uint8Array(e,a,h),d=xo(c);if(n.push(d),i===r)break;r+=o+1}catch(e){console.error(e);break}return n}class fc{constructor(e,t){var i;this.config=e||{},this.genome=t,this.indexURL=e.indexURL,this.indexed=e.indexed||void 0!==this.indexURL,this.queryable=this.indexed,Xi(this.config.url)?this.filename=this.config.url.name:Ma(this.config.url)?(this.indexed=!1,this.dataURI=e.url):(i=Ki(this.config.url),this.filename=e.filename||i.file),this.parser=this.getParser(this.config),"vcf"!==this.config.format||this.config.indexURL||console.warn("Warning: index file not specified.  The entire vcf file will be loaded.")}async defaultVisibilityWindow(){if(this.config.indexURL){const e=await this.getIndex();if(e&&e.lastBlockPosition){let t=0;const i=1e4;for(let i of e.chromosomeNames){const e=this.genome.getChromosome(i);e&&(t+=e.bpLength)}return Math.round(t/e.lastBlockPosition*i)}}}async readFeatures(e,t,i){return await this.getIndex()?(this.indexed=!0,this.loadFeaturesWithIndex(e,t,i)):this.dataURI?(this.indexed=!1,this.loadFeaturesFromDataURI()):(this.indexed=!1,this.loadFeaturesNoIndex())}async readHeader(){if(this.dataURI)return await this.loadFeaturesFromDataURI(this.dataURI),this.header;if(this.config.indexURL){const e=await this.getIndex();if(!e)throw new Error("Unable to load index: "+this.config.indexURL);let t;if(e.tabix)this._blockLoader=new cc(this.config),t=new lc(this.config);else{const i=Object.values(e.chrIndex).flatMap((e=>e.blocks)).map((e=>e.max)).reduce(((e,t)=>Math.min(e,t)),Number.MAX_SAFE_INTEGER),n=Ca(this.config,{bgz:e.tabix,range:{start:0,size:i}});t=sc(await ea.loadString(this.config.url,n))}return this.header=await this.parser.parseHeader(t),this.header}{const e=Ca(this.config),t=await ea.loadString(this.config.url,e);let i=sc(t);return this.header=await this.parser.parseHeader(i),i=sc(t),this.features=await this.parser.parseFeatures(i),this.header}}getParser(e){switch(e.format){case"vcf":return new Dh(e);case"seg":return new Rh("seg");case"mut":return new Rh("mut");case"maf":return new Rh("maf");case"gwas":return new Hh(e);case"aed":return new jh(e);default:return new xh(e)}}async loadFeaturesNoIndex(){if(this.features){const e=this.features;return delete this.features,e}{const e=Ca(this.config),t=await ea.loadString(this.config.url,e);if(!this.header){const e=sc(t);this.header=await this.parser.parseHeader(e)}const i=sc(t);return await this.parser.parseFeatures(i)}}async loadFeaturesWithIndex(e,t,i){this.dataURI||this.header||await this.readHeader();const n=this.config,r=this.parser,s=this.index.tabix,o=s?this.index.sequenceIndexMap[e]:e;if(void 0===o)return[];const a=this.genome,l=this.index.chunksForRange(o,t,i);if(l&&0!==l.length){const o=[];for(let h of l){let l;if(s)l=await this._blockLoader.getData(h.minv,h.maxv);else{const e=Ca(n,{range:{start:h.minv.block,size:h.maxv.block-h.minv.block+1}});l=await ea.loadString(n.url,e)}const c=sc(h.minv.offset?l.slice(h.minv.offset):l);let d=await r.parseFeatures(c);d=d.filter((e=>void 0===e._f));let u=!1;for(let n=0;n<d.length;n++){const r=d[n];if((a?a.getChromosomeName(r.chr):r.chr)!==e){if(0===o.length)continue;break}if(r.start>i){o.push(r);break}r.end>=t&&r.start<=i&&(u||(u=!0,n>0&&o.push(d[n-1])),o.push(r))}}return o.sort((function(e,t){return e.start-t.start})),o}return[]}async getIndex(){return this.index?this.index:this.config.indexURL?(this.index=await this.loadIndex(),this.index):void 0}async loadIndex(){return rc(this.config.indexURL,this.config,this.genome)}async loadFeaturesFromDataURI(){if(this.features){const e=this.features;return delete this.features,e}{const e=Ro(this.dataURI);let t=sc(e);return this.header=await this.parser.parseHeader(t),this.header instanceof String&&this.header.startsWith("##gff-version 3")&&(this.format="gff3"),t=sc(e),this.features=await this.parser.parseFeatures(t),this.features}}}const pc=ji;class gc{constructor(e){this.config=e}async readFeatures(e,t,i){let n;n="function"==typeof this.config.url?this.config.url({chr:e,start:t,end:i}):this.config.url.replace("$CHR",e).replace("$START",t).replace("$END",i);let r,s=Object.assign({},this.config);void 0!==this.config.body&&("function"==typeof this.config.body?s.body=this.config.body({chr:e,start:t,end:i}):s.body=this.config.body.replace("$CHR",e).replace("$START",t).replace("$END",i));const o=await ea.load(n,s);if(o&&(r="function"==typeof this.config.parser?this.config.parser(o):pc(o)?JSON.parse(o):o),this.config.mappings){let e=Object.keys(this.config.mappings);for(let t of r)for(let i of e)t[i]=t[this.config.mappings[i]]}return r}}const mc=function(e,t){this.config=e,this.genome=t,this.expandQueryInterval=!1};mc.prototype.readFeatures=function(e,t,i){const n=Math.max(0,Math.floor(t));let r=Math.ceil(i);if(this.genome){const t=this.genome.getChromosome(e);t&&r>t.bpLength&&(r=t.bpLength)}const s=this.config.url+"?db="+this.config.db+"&table="+this.config.tableName+"&chr="+e+"&start="+n+"&end="+r;return ea.loadJson(s,this.config).then((function(e){return e?(e.forEach((function(e){e.hasOwnProperty("exonStarts")&&e.hasOwnProperty("exonEnds")&&e.hasOwnProperty("exonCount")&&e.hasOwnProperty("cdsStart")&&e.hasOwnProperty("cdsEnd")&&function(e){var t,i,n,r,s,o;t=e.exonCount,i=e.exonStarts.split(","),n=e.exonEnds.split(","),r=[];for(var a=0;a<t;a++){var l={start:s=parseInt(i[a]),end:o=parseInt(n[a])};(e.cdsStart>o||e.cdsEnd<e.cdsStart)&&(l.utr=!0),e.cdsStart>=s&&e.cdsStart<=o&&(l.cdStart=e.cdsStart),e.cdsEnd>=s&&e.cdsEnd<=o&&(l.cdEnd=e.cdsEnd),r.push(l)}e.exons=r}(e)})),e):null}))};const bc=["Name","gene_name","gene","gene_id","alias","locus","name"];class wc{constructor(e){this.format=e.format,this.nameField=e.nameField,this.filterTypes=void 0===e.filterTypes?new Set(["chromosome"]):new Set(e.filterTypes)}combineFeatures(e,t){let i;const n=this.filterTypes;if(e=e.filter((e=>void 0===n||!n.has(e.type))),"gff3"===this.format){const t=this.combineFeaturesById(e);i=this.combineFeaturesByType(t)}else i=this.combineFeaturesByType(e);return i.sort((function(e,t){return e.start-t.start})),this.numberExons(i,t),this.nameFeatures(i),i}combineFeaturesById(e){const t=new Map,i=[];for(let n of e)if(Wl(n.type)||$l(n.type)||!n.id)i.push(n);else{let e=t.get(n.chr);e||(e=new Map,t.set(n.chr,e));let i=e.get(n.id);i?i.push(n):e.set(n.id,[n])}for(let e of t.values())for(let t of e.values())if(t.length>1){const e=t[0];e.exons=[];for(let i of t)e.start=Math.min(e.start,i.start),e.end=Math.max(e.end,i.end),e.exons.push({start:i.start,end:i.end});i.push(e)}else i.push(t[0]);return i}combineFeaturesByType(e){const t=e.filter((e=>"gene"===e.type||e.type.endsWith("_gene"))),i=Object.create(null);for(let e of t)i[e.id]=e;const n=Object.create(null),r=[],s=new Set,o=this.filterTypes;e=e.filter((e=>void 0===o||!o.has(e.type)));for(let t of e)if("biological_region"===t.type&&console.log(),$l(t.type)){const e=t.id;if(void 0!==e){const o=new Ql(t);n[e]=o,r.push(o),s.add(t);const a=i[t.parent];a&&(o.geneObject=a,s.add(a))}}for(let t of e)if(Wl(t.type)){const e=h(t);if(e)for(let i of e){let o=n[i];if(!o&&"gtf"===this.format){const e=Object.assign({},t);e.type="transcript",o=new Ql(e),n[i]=o,r.push(o)}if(void 0!==o){if(a=t.type,Hl.has(a))if(e.length>1){const e=new Zl(t);o.addExon(e)}else o.addExon(t);else o.addPart(t);s.add(t)}}}var a;r.forEach((function(e){"function"==typeof e.finish&&e.finish()}));const l=e.filter((e=>!s.has(e)));for(let e of l)r.push(e);return r;function h(e){return e.parent&&""!==e.parent.trim()?e.parent.trim().split(","):null}}numberExons(e,t){for(let i of e)if(i.exons&&(!t||i.end<=t.end&&i.start>t.start))for(let e=0;e<i.exons.length;e++){i.exons[e].number="-"===i.strand?i.exons.length-e:e+1}}nameFeatures(e){for(let t of e)if(t.attributeString){const e="gff3"===this.format?"=":" ",i=Jl(t.attributeString,e),n=new Map(i);if(this.nameField)t.name=n.get(this.nameField);else for(let e of bc)if(n.has(e)){t.name=n.get(e);break}}}}const vc=function(e){this.config=e,this.url=e.url,this.tissueId=e.tissueSiteDetailId,this.indexed=!0,this.datasetId=e.datasetId||"gtex_v8"};vc.prototype.readFeatures=async function(e,t,i){let n=e.startsWith("chr")?e:"chr"+e,r=Math.floor(t),s=Math.ceil(i),o=this.datasetId,a=this.url+"?chromosome="+n+"&start="+r+"&end="+s+"&tissueSiteDetailId="+this.tissueId+"&datasetId="+o;const l=await ea.loadJson(a,{withCredentials:this.config.withCredentials});return l&&l.singleTissueEqtl?(l.singleTissueEqtl.forEach((function(e){e.chr=e.chromosome,e.position=e.pos,e.start=e.pos-1,e.end=e.start+1,e.snp=e.snpId,e.geneName=e.geneSymbol,e.geneId=e.gencodeId})),l.singleTissueEqtl):void 0};const yc=function(e){this.config=e,this.url=e.url,this.cellConditionId=e.cellConditionId,this.valueThreshold=e.valueThreshold?e.valueThreshold:.05};yc.prototype.readFeatures=function(e,t,i){var n=this,r=this.url+"?chromosome="+e+"&start="+t+"&end="+i+"&cell_condition_id="+this.cellConditionId;return new Promise((function(e,t){ea.loadJson(r,{withCredentials:n.config.withCredentials}).then((function(t){t?(t.eqtls.forEach((function(e){e.chr=e.chromosome,e.start=e.position,e.end=e.position+1})),e(t.eqtls)):e(null)})).catch((function(e){t(e)}))}))};const _c=ea.apiKey;function xc(e){var t=e.url+"/"+e.entity+"/"+e.entityId;return e.headers={"Cache-Control":"no-cache"},ea.loadJson(t,e)}function kc(e){return new Promise((function(t,i){var n=e.results?e.results:[],r=e.url,s=e.body,o=e.decode,a="?",l=e.fields;return _c&&(r=r+a+"key="+_c,a="&"),l&&(r=r+a+"fields="+l),function e(a){a?s.pageToken=a:void 0!==s.pageToken&&delete s.pageToken;var l=JSON.stringify(s);ea.loadJson(r,{sendData:l,contentType:"application/json",headers:{"Cache-Control":"no-cache"}}).then((function(i){var r,s;i?((s=o?o(i):i)&&s.forEach((function(e){n.push(e)})),(r=i.nextPageToken)?e(r):t(n)):t(n)})).catch((function(e){i(e)}))}()}))}const Cc=function(e,t){this.config=e,this.genome=t,this.url=e.url,this.variantSetId=e.variantSetId,this.callSetIds=e.callSetIds,this.includeCalls=void 0===e.includeCalls||e.includeCalls};Cc.prototype.readHeader=function(){var e=this;return e.header?Promise.resolve(e.header):(e.header={},!1===e.includeCalls?Promise.resolve(e.header):kc({url:e.url+"/callsets/search",fields:"nextPageToken,callSets(id,name)",body:{variantSetIds:Array.isArray(e.variantSetId)?e.variantSetId:[e.variantSetId],pageSize:"10000"},decode:function(t){if(e.callSetIds){var i=[],n=new Set;return e.callSetIds.forEach((function(e){n.add(e)})),t.callSets.forEach((function(e){n.has(e.id)&&i.push(e)})),i}return t.callSets}}).then((function(t){return e.header.callSets=t,e.header})))},Cc.prototype.readFeatures=function(e,t,i){const n=this,r=this.genome;return n.readHeader().then((function(e){return new Promise((function(e,t){n.chrAliasTable?e(n.chrAliasTable):n.readMetadata().then((function(t){n.metadata=t.metadata,n.chrAliasTable={},t.referenceBounds&&r&&t.referenceBounds.forEach((function(e){var t=e.referenceName,i=r.getChromosomeName(t);n.chrAliasTable[i]=t})),e(n.chrAliasTable)}))}))})).then((function(r){var s=r.hasOwnProperty(e)?r[e]:e;return kc({url:n.url+"/variants/search",fields:n.includeCalls?void 0:"nextPageToken,variants(id,variantSetId,names,referenceName,start,end,referenceBases,alternateBases,quality,filter,info)",body:{variantSetIds:Array.isArray(n.variantSetId)?n.variantSetId:[n.variantSetId],callSetIds:n.callSetIds?n.callSetIds:void 0,referenceName:s,start:t.toString(),end:i.toString(),pageSize:"10000"},decode:function(e){var t,i=[];return e.variants.forEach((function(e){t=function(e){var t,i=new Nh;return i.chr=e.referenceName,i.start=parseInt(e.start),i.end=parseInt(e.end),i.pos=i.start+1,i.names=Oh(e.names,"; "),i.referenceBases=e.referenceBases,i.alternateBases=Oh(e.alternateBases),i.quality=e.quality,i.filter=Oh(e.filter),i.info={},e.info&&Object.keys(e.info).forEach((function(t){var n,r=e.info[t];n=Array.isArray(r)?r.join(","):r,i.info[t]=n})),i.calls={},e.calls&&e.calls.forEach((function(e){t=e.callSetId,i.calls[t]=e})),init(i),i}(e),t.isRefBlock()||i.push(t)})),i}})}))},Cc.prototype.readMetadata=function(){return xc({url:this.url,entity:"variantsets",entityId:this.variantSetId})};class Sc{constructor(e){this.config=e}async readFeatures(e,t,i){const n=(await ea.loadJson(this.config.url+"/variants/?count=50000")).records,r=[];for(let e of n)if(e.coordinates){e.id;const t=e.coordinates;t.chromosome&&r.push(new Ac(t.chromosome,t.start-1,t.stop,e)),t.chromosome2&&r.push(new Ac(t.chromosome2,t.start2-1,t.stop2,e))}return r}}class Ac{constructor(e,t,i,n){if(this.chr=e,this.start=t,this.end=i,this.id=n.id,this.entrezName=n.entrez_name,this.name=n.name,this.actionabilityScore=n.civic_actionability_score,n.coordinates.reference_bases&&(this.refBases=n.coordinates.reference_bases),n.coordinates.variant_bases&&(this.altBases=n.coordinates.variant_bases),n.variant_types&&(this.variant_types=n.variant_types),this.locationString=this.chr+":"+$i(this.start+1)+"-"+$i(this.end),void 0!==this.actionabilityScore){let e;if(this.actionabilityScore<=10)e=.2;else{const t=Math.min(30,this.actionabilityScore);e=.2+.8*Math.log10((t-10)/2)}this.alpha=e}}popupData(){const e=i("CIViC","https://civicdb.org/links/variants/"+this.id);this.refBases!==this.altBases&&this.refBases&&1===this.refBases.length&&this.altBases&&this.altBases.length;const t=[e];if(t.push({name:"Entrez",value:i(this.entrezName,"https://ghr.nlm.nih.gov/gene/"+this.entrezName)}),t.push({name:"Name",value:this.name}),this.variant_types&&this.variant_types.length>0){const e=1===this.variant_types.length?"Type":"Types";let i;for(let e of this.variant_types)i?i+=", "+e.display_name:i=e.display_name;t.push({name:e,value:i})}return t.push({name:"Actionability",value:this.actionabilityScore}),t.push({name:"Location",value:this.locationString}),t;function i(e,t){return"<a target='_blank' href='"+t+"'>"+e+"</a>"}}}class Ec{constructor(e,t){if(this.config=e,this.genome=t,this.format=e.format?e.format.toUpperCase():"BAM","BAM"!==this.format&&"VCF"!==this.format)throw Error(`htsget format ${e.format} is not supported`)}async readHeaderData(){const e=`${Tc(this.config)}?class=header&format=${this.format}`,t=await ea.loadJson(e,Ca(this.config));return await this.loadUrls(t.htsget.urls)}async readData(e,t,i){const n=`${Tc(this.config)}?format=${this.format}&referenceName=${e}&start=${Math.floor(t)}&end=${Math.ceil(i)}`,r=await ea.loadJson(n,Ca(this.config));return this.loadUrls(r.htsget.urls)}async loadUrls(e){const t=[];for(let i of e)if(i.url.startsWith("data:"))t.push(Promise.resolve(Mc(i.url)));else{const e=Ca(this.config||{});i.headers&&(e.headers=Object.assign(e.headers||{},i.headers)),t.push(ea.loadArrayBuffer(i.url,e))}return function(e){let t=0;for(let i of e)t+=i.byteLength;let i=0;const n=new Uint8Array(t);for(let t of e){const e=new Uint8Array(t);n.set(e,i),i+=e.length}return n}(await Promise.all(t))}static async inferFormat(e){try{const t=Tc(e),i=`${t}${t.includes("?")?"&":"?"}class=header`,n=await ea.loadJson(i,Ca(e));if(n.htsget){const t=n.htsget.format;if("BAM"!==t&&"VCF"!==t)throw Error(`htsget format ${t} is not supported`);e.format=t.toLowerCase(),e.sourceType="htsget",e.name||(e.name=await Ea(e.url))}}catch(e){}}}function Tc(e){if(e.url&&e.endpoint&&e.id)return e.url+e.endpoint+e.id;if(e.endpoint&&e.id)return e.endpoint+e.id;if(e.url)return e.url.startsWith("htsget://")?e.url.replace("htsget://","https://"):e.url;throw Error("Must specify either 'url', or 'endpoint' and 'id")}function Mc(e){const t=e.split(","),i=t[0].split(":")[1];let n=t[1];n=i.indexOf("base64")>=0?atob(n):decodeURI(n);const r=new Uint8Array(n.length);for(var s=0;s<n.length;s++)r[s]=n.charCodeAt(s);return r}class Rc extends Ec{constructor(e,t){super(e,t),this.parser=new Dh}async readHeader(){if(!this.header){const e=sc(await this.readHeaderData());this.header=await this.parser.parseHeader(e,this.genome),this.chrAliasTable=this.header.chrAliasTable}return this.header}async readFeatures(e,t,i){if(this.config.format&&"VCF"!==this.config.format.toUpperCase())throw Error(`htsget format ${this.config.format} is not supported`);this.chrAliasTable||await this.readHeader();let n=this.chrAliasTable.has(e)?this.chrAliasTable.get(e):e;const r=sc(await this.readData(n,t,i));return this.parser.parseFeatures(r)}}function Lc(e,t){t=t||Number.MAX_SAFE_INTEGER;const i=[];e.sort((function(e,t){return e.start-t.start})),i.push(-1e3);for(let n of e){let e=0;const r=Math.min(i.length,t);for(e=0;e<r;e++)if(n.start>=i[e]){n.row=e,i[e]=n.end;break}n.row=e,i[e]=n.end}}function Ic(e,t,i){const n=i||1e4,r=e=>{const i=Object.assign({},e);return i.chr="all",i.start=t.getGenomeCoordinate(e.chr,e.start),i.end=t.getGenomeCoordinate(e.chr,e.end),i._f=e,i.exons&&delete i.exons,i},s=new Set(t.wgChromosomeNames),o=[];let a=0;for(let i of t.wgChromosomeNames){if(Array.isArray(e)){const i={};for(let n of e){const e=t.getChromosomeName(n.chr);i.hasOwnProperty(e)||(i[e]=[]),i[e].push(n)}e=i}const l=e[i];if(l)for(let e of l){let i=t.getChromosomeName(e.chr);if(s.has(i))if(o.length<n)o.push(r(e));else{const t=n/(a+1);if(Math.random()<t){o[Math.floor(Math.random()*(n-1))]=r(e)}}a++}}return o.sort((function(e,t){return e.start-t.start})),o}function Nc(e,t){if(t=t||1e3,null==e||0===e.length)return;const i={},n=[];for(let t of e){const e=t.chr;let r=i[e];r||(r=[],i[e]=r,n.push(e)),r.push(t)}for(let e of n)Lc(i[e],t)}class Fc{constructor(e,t){this.config=e||{},this.genome=t,this.sourceType=void 0===e.sourceType?"file":e.sourceType,this.maxWGCount=e.maxWGCount||1e4;const i=new Set(["bigwig","bw","bigbed","bb","biginteract","biggenepred","bignarrowpeak","tdf"]);this.queryable=e.indexURL||!0===e.queryable,e.reader?(this.reader=e.reader,this.queryable=!1!==e.queryable):"ga4gh"===e.sourceType?(this.reader=new Cc(e,t),this.queryable=!0):"immvar"===e.sourceType?(this.reader=new yc(e),this.queryable=!0):"eqtl"===e.type&&"gtex-ws"===e.sourceType?(this.reader=new vc(e),this.queryable=!0):"htsget"===e.sourceType?(this.reader=new Rc(e,t),this.queryable=!0):"ucscservice"===e.sourceType?(this.reader=new mc(e.source),this.queryable=!0):"custom"===e.sourceType?(this.reader=new gc(e.source),this.queryable=!1!==e.source.queryable):"civic-ws"===e.sourceType?(this.reader=new Sc(e),this.queryable=!1):(this.reader=new fc(e,t),void 0!==e.queryable?this.queryable=e.queryable:(i.has(e.format)||this.reader.indexed)&&(this.queryable=!0)),this.searchable=!0===e.searchable||e.searchableFields||!1!==e.searchable&&!this.queryable}async defaultVisibilityWindow(){if(this.reader&&"function"==typeof this.reader.defaultVisibilityWindow)return this.reader.defaultVisibilityWindow()}async trackType(){const e=await this.getHeader();return e?e.type:void 0}async getHeader(){if(!this.header)if(this.reader&&"function"==typeof this.reader.readHeader){const e=await this.reader.readHeader();e?(this.header=e,e.format&&(this.config.format=e.format)):this.header={}}else this.header={};return this.header}async getFeatures({chr:e,start:t,end:i,bpPerPixel:n,visibilityWindow:r}){const s=this.genome,o=s?s.getChromosomeName(e):e,a="all"===o.toLowerCase();return(a&&!this.wgFeatures&&this.supportsWholeGenome()||this.config.disableCache||!this.featureCache||!this.featureCache.containsRange(new Ja(o,t,i)))&&await this.loadFeatures(o,t,i,r),a?(this.wgFeatures||(this.supportsWholeGenome()?this.wgFeatures=Ic(this.featureCache.getAllFeatures(),this.genome,this.maxWGCount):this.wgFeatures=[]),this.wgFeatures):this.featureCache.queryFeatures(o,t,i)}supportsWholeGenome(){return!this.queryable}getAllFeatures(){return this.queryable||!this.featureCache?[]:this.featureCache.getAllFeatures()}async loadFeatures(e,t,i,n){const r=this.reader;let s=t,o=i;if((!n||n<=0)&&!1!==this.config.expandQuery){const t=this.genome?this.genome.getChromosome(e):void 0;s=0,o=Math.max(t?t.bpLength:Number.MAX_SAFE_INTEGER,i)}else if(n>i-t&&!1!==this.config.expandQuery){const e=Math.min(4.1*(i-t),n);s=Math.max(0,(t+i)/2-e),o=t+e}let a=await r.readFeatures(e,s,o);void 0===this.queryable&&(this.queryable=r.indexed);const l=this.queryable?new Ja(e,s,o):void 0;if(a){if(!1===this.config.assembleGFF||"gtf"!==this.config.format&&"gff3"!==this.config.format&&"gff"!==this.config.format||(a=new wc(this.config).combineFeatures(a,l)),"wig"!==this.config.format&&"junctions"!==this.config.type){Nc(a,this.config.maxRows||Number.MAX_SAFE_INTEGER)}this.featureCache=new ha(a,this.genome,l),this.searchable&&this.genome.addFeaturesToDB(a,this.config)}else this.featureCache=new ha([],l)}}class Bc{constructor(e,t,i){this.path=e.url,this.bufferSize=i||512e3,this.range={start:-1,size:-1},this.config=e}async dataViewForRange(e,t,i=0){try{if(!(this.data&&this.range.start<=e.start&&this.range.start+this.range.size>=e.start+e.size)){let t;t=e.size?Math.max(this.bufferSize,e.size):this.bufferSize,this.contentLength&&(t=Math.min(t,this.contentLength-e.start));const i={start:e.start,size:t},n=await ea.loadArrayBuffer(this.path,Ca(this.config,{range:i}));this.data=n,this.range=i}const i=this.data.byteLength,n=e.start-this.range.start;return t?new Uint8Array(this.data,n,i-n):new DataView(this.data,n,i-n)}catch(n){if(0===i&&n.message&&n.message.startsWith("416")){try{return this.contentLength=await ea.getContentLength(this.path,Ca(this.config)),this.dataViewForRange(e,t,++i)}catch(e){console.error(e)}throw n}}}}let Oc=512e3;class Dc{constructor(e,t){this.path=e.url,this.format=e.format||"bigwig",this.genome=t,this.rpTreeCache={},this.config=e,this.loader=Ma(this.path)?new Zc(this.path):ea}async readWGFeatures(e,t){await this.loadHeader();const i=this.chromTree.idToChrom.length-1,n=this.chromTree.idToChrom[0],r=this.chromTree.idToChrom[i];return this.readFeatures(n,0,r,Number.MAX_VALUE,e,t)}async readFeatures(e,t,i,n,r,s){await this.loadHeader();const o=this.chromTree.chromToID[e],a=this.chromTree.chromToID[i];if(void 0===o||void 0===a)return[];let l,h;if("bigwig"===this.type){const e=await this.getZoomHeaders();let t=r?function(e,t){let i;for(let n=0;n<t.length;n++){const r=t[n];if(r.reductionLevel<e){i=r;break}}return i}(r,e):void 0;t?(l=t.indexOffset,h=Gc):(l=this.header.fullIndexOffset,h=$c)}else l=this.header.fullIndexOffset,h=Wc.call(this);const c=await this.loadRPTree(l),d=await c.findLeafItemsOverlapping(o,t,a,n);if(d&&0!==d.length){let e=Number.MAX_VALUE,i=0;for(let t of d)e=Math.min(e,t.dataOffset),i=Math.max(i,t.dataOffset+t.dataSize);const r=i-e,l=await this.loader.loadArrayBuffer(this.config.url,Ca(this.config,{range:{start:e,size:r}})),c=[];for(let i of d){const r=new Uint8Array(l,i.dataOffset-e,i.dataSize);let d;d=this.header.uncompressBuffSize>0?_o(r):r,h.call(this,new DataView(d.buffer),o,t,a,n,c,this.chromTree.idToChrom,s)}return c.sort((function(e,t){return e.start-t.start})),c}return[]}async getZoomHeaders(){return this.zoomLevelHeaders||await this.loadHeader(),this.zoomLevelHeaders}async loadHeader(){if(this.header)return this.header;{let e,t=await this.loader.loadArrayBuffer(this.path,Ca(this.config,{range:{start:0,size:64}}));this.littleEndian=!0;let i=new Yh(new DataView(t)),n=i.getUInt();if(2291137574===n)this.type="bigwig";else if(2273964779===n)this.type="bigbed";else{this.littleEndian=!1,i.littleEndian=!1,i.position=0;let e=i.getUInt();654085990===e?this.type="bigwig":3958540679===e&&(this.type="bigbed")}e={bwVersion:i.getUShort(),nZoomLevels:i.getUShort(),chromTreeOffset:i.getLong(),fullDataOffset:i.getLong(),fullIndexOffset:i.getLong(),fieldCount:i.getUShort(),definedFieldCount:i.getUShort(),autoSqlOffset:i.getLong(),totalSummaryOffset:i.getLong(),uncompressBuffSize:i.getInt(),extensionOffset:i.getLong()};const r=64;let s={start:r,size:e.fullDataOffset-r+5};t=await this.loader.loadArrayBuffer(this.path,Ca(this.config,{range:s}));const o=e.nZoomLevels;i=new Yh(new DataView(t)),this.zoomLevelHeaders=[],this.firstZoomDataOffset=Number.MAX_SAFE_INTEGER;for(let e=1;e<=o;e++){const t=o-e,n=new Pc(t,i);this.firstZoomDataOffset=Math.min(n.dataOffset,this.firstZoomDataOffset),this.zoomLevelHeaders[t]=n}if(e.autoSqlOffset>0){i.position=e.autoSqlOffset-r;const t=i.getString();t&&(this.autoSql=function(e){let t;const i=[];let n=!1;const r=e.trim().split(/\s*[\r\n]+\s*/g);for(let e of r)if(e.startsWith("table"))t=e.split(/\s+/)[1].trim();else if(e.startsWith("("))n=!0;else if(e.startsWith(")"));else if(n&&e.length>0){const t=e.indexOf(";"),n=e.substr(0,t).split(/\s+/),r=e.substr(t+1).replace(/"/g,"").trim();i.push({type:n[0],name:n[1],description:r})}return{table:t,fields:i}}(t))}if(e.totalSummaryOffset>0&&(i.position=e.totalSummaryOffset-r,this.totalSummary=new qc(i)),!(e.chromTreeOffset>0))throw"BigWig chromosome tree offset <= 0";return i.position=e.chromTreeOffset-r,this.chromTree=new Uc(i,r,this.genome),i.position=e.fullDataOffset-r,e.dataCount=i.getInt(),this.setDefaultVisibilityWindow(e),this.header=e,this.header}}async loadRPTree(e){let t=this.rpTreeCache[e];return t||(t=new zc(e,this.config,this.littleEndian,this.loader),await t.load(),this.rpTreeCache[e]=t,t)}async getType(){return await this.loadHeader(),this.type}async getTrackType(){return await this.loadHeader(),"bigwig"===this.type?"wig":this.autoSql&&"chromatinInteract"===this.autoSql.table?"interact":"annotation"}setDefaultVisibilityWindow(e){if("bigwig"===this.type)this.visibilityWindow=-1;else{let t=this.genome?this.genome.getGenomeLength():3088286401;this.visibilityWindow=e.dataCount<1e3?-1:t/e.dataCount*1e3}}}class Pc{constructor(e,t){this.index=e,this.reductionLevel=t.getInt(),this.reserved=t.getInt(),this.dataOffset=t.getLong(),this.indexOffset=t.getLong()}}class zc{constructor(e,t,i,n){this.config=t,this.loader=n,this.fileOffset=e,this.path=t.url,this.littleEndian=i}async load(){const e=this.fileOffset+48,t=Ma(this.path)?this.loader:new Bc(this.config,Oc);return this.rootNode=await this.readNode(e,t),this}async readNode(e,t){let i=await t.dataViewForRange({start:e,size:4},!1),n=new Yh(i,this.littleEndian);const r=1===n.getByte();n.getByte();const s=n.getUShort();let o={start:e+=4,size:s*(r?32:24)};i=await t.dataViewForRange(o,!1);const a=new Array(s);if(n=new Yh(i),r){for(let e=0;e<s;e++){let t={isLeaf:!0,startChrom:n.getInt(),startBase:n.getInt(),endChrom:n.getInt(),endBase:n.getInt(),dataOffset:n.getLong(),dataSize:n.getLong()};a[e]=t}return new Hc(a)}for(let e=0;e<s;e++){let t={isLeaf:!1,startChrom:n.getInt(),startBase:n.getInt(),endChrom:n.getInt(),endBase:n.getInt(),childOffset:n.getLong()};a[e]=t}return new Hc(a)}async findLeafItemsOverlapping(e,t,i,n){let r=this;return new Promise((function(s,o){let a=[],l=new Set,h=Ma(r.path)?r.loader:new Bc(r.config,Oc);l.add(0),function c(d,u){if(Vc(d,e,t,i,n)){d.items.forEach((function(s){Vc(s,e,t,i,n)&&(s.isLeaf?a.push(s):s.childNode?c(s.childNode):(l.add(s.childOffset),r.readNode(s.childOffset,h).then((function(e){s.childNode=e,c(e,s.childOffset)})).catch(o)))}))}void 0!==u&&l.delete(u);0===l.size&&s(a)}(r.rootNode,0)}))}}class Hc{constructor(e){this.items=e;let t,i,n=Number.MAX_SAFE_INTEGER,r=0,s=Number.MAX_SAFE_INTEGER,o=0;for(t=0;t<e.length;t++)i=e[t],n=Math.min(n,i.startChrom),r=Math.max(r,i.endChrom),s=Math.min(s,i.startBase),o=Math.max(o,i.endBase);this.startChrom=n,this.endChrom=r,this.startBase=s,this.endBase=o}}class Uc{constructor(e,t,i){let n=e.getInt(),r=e.getInt(),s=e.getInt(),o=e.getInt(),a=e.getLong(),l=e.getLong(),h={},c=[];this.header={magic:n,blockSize:r,keySize:s,valSize:o,itemCount:a,reserved:l},this.chromToID=h,this.idToChrom=c,function e(n,r){r>=0&&(n.position=r);let o=n.getByte();n.getByte();let a,l,d,u,f,p,g=n.getUShort();if(1===o)for(a=0;a<g;a++)l=n.getFixedLengthTrimmedString(s),d=n.getInt(),n.getInt(),i&&(l=i.getChromosomeName(l)),h[l]=d,c[d]=l;else for(a=0;a<g;a++)l=n.getFixedLengthTrimmedString(s),u=n.getLong(),f=u-t,p=n.position,e(n,f),n.position=p}(e,-1)}}function Vc(e,t,i,n,r){return e?(n>e.startChrom||n===e.startChrom&&r>=e.startBase)&&(t<e.endChrom||t===e.endChrom&&i<=e.endBase):(console.log("null item for "+t+" "+i+" "+r),!1)}class qc{constructor(e){e?(this.basesCovered=e.getLong(),this.minVal=e.getDouble(),this.maxVal=e.getDouble(),this.sumData=e.getDouble(),this.sumSquares=e.getDouble(),jc.call(this)):(this.basesCovered=0,this.minVal=0,this.maxVal=0,this.sumData=0,this.sumSquares=0,this.mean=0,this.stddev=0)}}function jc(){let e=this.basesCovered;if(e>0){this.mean=this.sumData/e,this.stddev=Math.sqrt(this.sumSquares/(e-1));let t=this.minVal<0?this.mean-2*this.stddev:0,i=this.maxVal>0?this.mean+2*this.stddev:0;this.defaultRange={min:t,max:i}}}function $c(e,t,i,n,r,s,o){const a=new Yh(e),l=a.getInt(),h=a.getInt();let c=h,d=a.getInt();const u=a.getInt(),f=a.getInt(),p=a.getByte();a.getByte();let g=a.getUShort();if(l>=t&&l<=n){let e=0;for(;g-- >0;){let g;switch(p){case 1:c=a.getInt(),d=a.getInt(),g=a.getFloat();break;case 2:c=a.getInt(),g=a.getFloat(),d=c+f;break;case 3:g=a.getFloat(),c=h+e*u,d=c+f,e++}if(!(l<t||l===t&&d<i)){if(l>n||l===n&&c>=r)break;if(Number.isFinite(g)){const e=o[l];s.push({chr:e,start:c,end:d,value:g})}}}}}function Wc(){const e=function(e,t,i,n){if("biginteract"===n||i&&"chromatinInteract"===i.table||"interact"===i.table)return function(e,t){return e.chr1=t[5],e.start1=Number.parseInt(t[6]),e.end1=Number.parseInt(t[7]),e.chr2=t[10],e.start2=Number.parseInt(t[11]),e.end2=Number.parseInt(t[12]),e.name=t[0],e.score=Number(t[1]),e.value=Number(t[2]),e.color="."===t[4]?void 0:"0"===t[4]?"rgb(0,0,0)":t[4],e};{const n=e-3;return function(r,s){if(n>0&&(r.name=s[0]),n>1&&(r.score=Number(s[1])),n>2&&(r.strand=s[2]),n>3&&(r.cdStart=parseInt(s[3])),n>4&&(r.cdEnd=parseInt(s[4])),n>5&&"."!==s[5]&&"0"!==s[5]&&"-1"!==s[5]){const e=Oo.createColorString(s[5]);r.color=e.startsWith("rgb")?e:void 0}if(n>8){const e=parseInt(s[6]),t=s[7].split(","),i=s[8].split(","),n=[];for(let s=0;s<e;s++){const e=r.start+parseInt(i[s]),o=e+parseInt(t[s]);n.push({start:e,end:o})}!function(e,t,i){for(let n of e){const e=n.end,r=n.start;e<t||r>i?n.utr=!0:(t>=r&&t<=e&&(n.cdStart=t),i>=r&&i<=e&&(n.cdEnd=i))}}(n,r.cdStart,r.cdEnd),r.exons=n}if(i)for(let n=e;n<t;n++)if(n<i.fields.length){const e=i.fields[n].name,t=s[n-3];r[e]=t}}}}(this.header.definedFieldCount,this.header.fieldCount,this.autoSql,this.format);return function(t,i,n,r,s,o,a){const l=new Yh(t);for(;l.remLength()>=13;){const t=l.getInt(),h=a[t],c=l.getInt(),d=l.getInt(),u=l.getString();if(!(t<i||t===i&&d<n)){if(t>r||t===r&&c>=s)break;if(d>0){const t={chr:h,start:c,end:d};o.push(t);const i=u.split("\t");e(t,i)}}}}}function Gc(e,t,i,n,r,s,o,a){const l=new Yh(e);for(;l.remLength()>=32;){const e=l.getInt(),h=o[e],c=l.getInt(),d=l.getInt(),u=l.getInt(),f=l.getFloat(),p=l.getFloat(),g=l.getFloat();let m;switch(l.getFloat(),a){case"min":m=f;break;case"max":m=p;break;default:m=0===u?0:g/u}if(!(e<t||e===t&&d<i)){if(e>n||e===n&&c>=r)break;Number.isFinite(m)&&s.push({chr:h,start:c,end:d,value:m})}}}class Zc{constructor(e){this.data=Ro(e).buffer}loadArrayBuffer(e,t){const i=t.range;return i?this.data.slice(i.start,i.start+i.size):this.data}async dataViewForRange(e,t){const i=Math.min(this.data.byteLength-e.start,e.size);return t?new Uint8Array(this.data,e.start,i):new DataView(this.data,e.start,i)}}class Qc{constructor(e,t){this.reader=new Dc(e,t),this.genome=t,this.format=e.format||"bigwig",this.wgValues={},this.queryable=!0}async getFeatures({chr:e,start:t,end:i,bpPerPixel:n,windowFunction:r}){const s="bigwig"===this.reader.type,o="all"===e.toLowerCase()?s?await this.getWGValues(r):[]:await this.reader.readFeatures(e,t,e,i,n,r);return s||Lc(o),o}async getHeader(){return this.reader.loadHeader()}getDefaultRange(){return void 0!==this.reader.totalSummary?this.reader.totalSummary.defaultRange:void 0}async defaultVisibilityWindow(){return this.reader.defaultVisibilityWindow}async getWGValues(e){const t=this.genome;if(this.wgValues[e])return this.wgValues[e];{const i=t.getGenomeLength()/1e3,n=await this.reader.readWGFeatures(i,e);let r=[];for(let e of n){const i=e.chr,n=t.getCumulativeOffset(i),s=Object.assign({},e);s.chr="all",s.start=n+e.start,s.end=n+e.end,r.push(s)}return this.wgValues[e]=r,r}}supportsWholeGenome(){return"bigwig"===this.reader.type}async trackType(){return this.reader.getTrackType()}}class Xc{constructor(e,t){this.config=e,this.genome=t,this.path=e.url,this.groupCache={},this.datasetCache={}}async readHeader(){if(void 0!==this.magic)return this;let e=await ea.loadArrayBuffer(this.path,Ca(this.config,{range:{start:0,size:64e3}})),t=new Yh(new DataView(e));if(this.magic=t.getInt(),this.version=t.getInt(),this.indexPos=t.getLong(),this.indexSize=t.getInt(),t.getInt(),this.version>=2){let e=t.getInt();for(this.windowFunctions=[];e-- >0;)this.windowFunctions.push(t.getString())}this.trackType=t.getString(),this.trackLine=t.getString();let i=t.getInt();for(this.trackNames=[];i-- >0;)this.trackNames.push(t.getString());this.genomeID=t.getString(),this.flags=t.getInt(),this.compressed=0!=(1&this.flags),e=await ea.loadArrayBuffer(this.path,Ca(this.config,{range:{start:this.indexPos,size:this.indexSize}})),t=new Yh(new DataView(e)),this.datasetIndex={};let n=t.getInt();for(;n-- >0;){const e=t.getString(),i=t.getLong(),n=t.getInt();this.datasetIndex[e]={position:i,size:n}}for(this.groupIndex={},n=t.getInt();n-- >0;){const e=t.getString(),i=t.getLong(),n=t.getInt();this.groupIndex[e]={position:i,size:n}}return this}async readDataset(e,t,i){const n=e+"_"+t+"_"+i;if(this.datasetCache[n])return this.datasetCache[n];{await this.readHeader();const r=this.version<2?"":"/"+t,s="all"===e.toLowerCase()||void 0===i?"0":i.toString();let o;o="raw"===t?"/"+e+"/raw":"/"+e+"/z"+s+r;const a=this.datasetIndex[o];if(void 0===a)return;const l=await ea.loadArrayBuffer(this.path,Ca(this.config,{range:{start:a.position,size:a.size}}));if(!l)return;const h=new Yh(new DataView(l));let c=h.getInt();const d={};for(;c-- >0;)d[h.getString()]=h.getString();const u=h.getString(),f=h.getFloat();let p=h.getInt();const g=[];for(;p-- >0;)g.push({position:h.getLong(),size:h.getInt()});const m={name:o,attributes:d,dataType:u,tileWidth:f,tiles:g};return this.datasetCache[n]=m,m}}async readRootGroup(){const e=this.genome,t=this.groupCache["/"];if(t)return t;{const t=await this.readGroup("/"),i=t.chromosomes,n=t.maxZoom;n&&(this.maxZoom=Number(n));const r=t.totalCount;r&&(t.totalCount=Number(r));const s={};return i&&i.split(",").forEach((function(t){const i=e.getChromosomeName(t);s[i]=t})),this.chrAliasTable=s,this.groupCache["/"]=t,t}}async readGroup(e){const t=this.groupCache[e];if(t)return t;{await this.readHeader();const t=this.groupIndex[e];if(void 0===t)return;const i=await ea.loadArrayBuffer(this.path,Ca(this.config,{range:{start:t.position,size:t.size}}));if(!i)return;const n=new Yh(new DataView(i)),r={name:e};let s=n.getInt();for(;s-- >0;){const e=n.getString(),t=n.getString();r[e]=t}return this.groupCache[e]=r,r}}async readTiles(e,t){if(e.sort((function(e,t){return e.position-t.position})),0===(e=e.filter((function(e){return e.size>0}))).length)return Promise.resolve([]);const i=e[0],n=e[e.length-1],r=i.position,s=n.position+n.size-r,o=await ea.loadArrayBuffer(this.path,Ca(this.config,{range:{start:r,size:s}})),a=[];for(let i of e){const e=i.position-r,n=i.size;if(n>0){let i;if(this.compressed){i=_o(o.slice(e,e+n)).buffer}else i=o.slice(e,e+n);const r=new Yh(new DataView(i)),s=r.getString();let l;switch(s){case"fixedStep":l=Yc(r,t);break;case"variableStep":l=Kc(r,t);break;case"bed":case"bedWithName":l=Jc(r,t,s);break;default:throw"Unknown tile type: "+s}a.push(l)}}return a}async readTile(e,t){let i=await ea.loadArrayBuffer(this.path,Ca(this.config,{range:{start:e.position,size:e.size}}));if(this.compressed){i=_o(i).buffer}const n=new Yh(new DataView(i)),r=n.getString();switch(r){case"fixedStep":return Yc(n,t);case"variableStep":return Kc(n,t);case"bed":case"bedWithName":return Jc(n,t,r);default:throw"Unknown tile type: "+r}}}function Yc(e,t){const i=e.getInt(),n=e.getInt(),r=e.getFloat(),s=[];let o=t;for(;o-- >0;){let t=i;const n=[];for(;t-- >0;)n.push(e.getFloat());s.push(n)}return{type:"fixedStep",start:n,span:r,data:s,nTracks:t,nPositions:i}}function Kc(e,t){const i=e.getInt(),n=e.getFloat(),r=e.getInt(),s=[];let o=r;for(;o-- >0;)s.push(e.getInt());e.getInt();const a=[];let l=t;for(;l-- >0;){o=r;const t=[];for(;o-- >0;)t.push(e.getFloat());a.push(t)}return{type:"variableStep",tileStart:i,span:n,start:s,data:a,nTracks:t,nPositions:r}}function Jc(e,t,i){const n=e.getInt();let r=n;const s=[];for(;r-- >0;)s.push(e.getInt());r=n;const o=[];for(;r-- >0;)o.push(e.getInt());e.getInt();const a=[];let l=t;for(;l-- >0;){let t=n;const i=[];for(;t-- >0;)i.push(e.getFloat());a.push(i)}if("bedWithName"===i){r=n;const t=[];for(;r-- >0;)t.push(e.getString())}return{type:i,start:s,end:o,data:a,nTracks:t,nPositions:n}}class ed{constructor(e,t){this.genome=t,this.windowFunction=e.windowFunction||"mean",this.reader=new Xc(e,t),this.queryable=!0}async getFeatures({chr:e,start:t,end:i,bpPerPixel:n}){if("all"===e.toLowerCase()){const e=[],t=this.genome;if(this.genome.wgChromosomeNames)for(let i of t.wgChromosomeNames){const r=t.getChromosome(i).bpLength;n=r/1e3;const s=await this._getFeatures(i,0,r,n);if(s)for(let i of s){const n=Object.assign({},i);n.chr="all",n.start=t.getGenomeCoordinate(i.chr,i.start),n.end=t.getGenomeCoordinate(i.chr,i.end),n._f=i,e.push(n)}}return e}return this._getFeatures(e,t,i,n)}async _getFeatures(e,t,i,n){const r=new Ja(e,t,i),s=this.genome;if(!this.rootGroup&&(this.rootGroup=await this.reader.readRootGroup(),!this.normalizationFactor)){const e=this.rootGroup.totalCount;e&&(this.normalizationFactor=1e6/e)}r.bpPerPixel=n;const o=function(e,t,i){var n=i.getChromosome(e).bpLength;return Math.ceil(Math.log(Math.max(0,n/(700*t)))/rd)}(e,n,s);let a=this.reader.chrAliasTable[e],l=this.reader.maxZoom;void 0===a&&(a=e),void 0===l&&(l=-1);const h=o>l?"raw":this.windowFunction,c=await this.reader.readDataset(a,h,o);if(null==c)return[];const d=c.tileWidth,u=Math.floor(t/d),f=Math.floor(i/d),p=await this.reader.readTiles(c.tiles.slice(u,f+1),1),g=[];for(let r of p)switch(r.type){case"bed":td(r,e,t,i,n,g);break;case"variableStep":id(r,e,t,i,n,g);break;case"fixedStep":nd(r,e,t,i,n,g);break;default:throw"Unknown tile type: "+r.type}return g.sort((function(e,t){return e.start-t.start})),g}get supportsWholeGenome(){return!0}}function td(e,t,i,n,r,s){const o=e.nPositions,a=e.start,l=e.end,h=e.data[0];for(let e=0;e<o;e++){const r=a[e],o=l[e];if(!(o<i)){if(r>n)break;s.push({chr:t,start:r,end:o,value:h[e]})}}}function id(e,t,i,n,r,s){const o=e.nPositions,a=e.start,l=e.span,h=e.data[0];for(let e=0;e<o;e++){const r=a[e],o=r+l;if(!(o<i)){if(r>n)break;s.push({chr:t,start:r,end:o,value:h[e]})}}}function nd(e,t,i,n,r,s){const o=e.nPositions;let a=e.start;const l=e.span,h=e.data[0];for(let e=0;e<o;e++){const r=a+l;if(a>n)break;r>=i&&(Number.isNaN(h[e])||s.push({chr:t,start:a,end:r,value:h[e]})),a=r}}var rd=Math.log(2);class sd{constructor(e,t){this.config=e,this.genome=t,this.queryable=!1,this.searchable=!1!==e.searchable,this.updateFeatures(e.features)}updateFeatures(e){Nc(e=function(e,t){if(t)for(let i of e)i.chr=t.getChromosomeName(i.chr);return e}(e,this.genome)),this.config.mappings&&function(e,t){let i=Object.keys(t);e.forEach((function(e){i.forEach((function(i){e[i]=e[t[i]]}))}))}(e,this.config.mappings),this.featureCache=new ha(e,this.genome),(this.searchable||this.config.searchableFields)&&this.genome.addFeaturesToDB(e,this.config)}async getFeatures({chr:e,start:t,end:i,bpPerPixel:n,visibilityWindow:r}){const s=this.genome,o=s?s.getChromosomeName(e):e;return"all"===o.toLowerCase()?Ic(this.featureCache.getAllFeatures(),this.genome,this.maxWGCount):this.featureCache.queryFeatures(o,t,i)}getAllFeatures(){return this.featureCache.getAllFeatures()}supportsWholeGenome(){return!0}}const od=new Set(["bigwig","bw","bigbed","bb","biginteract","biggenepred","bignarrowpeak"]);function ad(e,t){const i=e.format?e.format.toLowerCase():void 0;return e.features?new sd(e,t):od.has(i)?new Qc(e,t):"tdf"===i?new ed(e,t):new Fc(e,t)}const ld=function(e,t){const{r:i,g:n,b:r}=fa[e];return`rgba(${i},${n},${r},${t})`}("nickel",2/16),hd=ld;class cd{constructor(e,t){if(this.url=e.url,e.name?this.name=e.name:e.url&&Xi(e.url)?this.name=e.url.name:e.url&&ji(e.url)&&!e.url.startsWith("data:")&&(this.name=Qi(e.url)),this.isUserDefined=e.isUserDefined,e.features)this.featureSource=new ud(e.features,t);else{if(e.format)e.format=e.format.toLowerCase();else{const t=Qi(e.url);e.format=za(t)}this.featureSource=e.featureSource||ad(e,t)}!0===this.isUserDefined?(this.color=e.color||hd,this.headerColor="rgba(155,185,129)"):(this.color=e.color||ld,this.headerColor="rgb(190,190,190)")}async getFeatures(e,t,i){return this.featureSource.getFeatures({chr:e,start:t,end:i})}async getAllFeatures(){return"function"==typeof this.featureSource.getAllFeatures?await this.featureSource.getAllFeatures():{}}addFeature(e){this.isUserDefined?this.featureSource.addFeature(e):console.error("Attempt to add ROI to non user-defined set")}removeFeature(e){this.isUserDefined?this.featureSource.removeFeature(e):console.error("Attempt to remove ROI from non user-defined set")}toJSON(){if(this.url)return{name:this.name,color:this.color,url:this.url,isUserDefined:this.isUserDefined};{const e=this.featureSource.getAllFeatures(),t=[];for(let i of Object.keys(e))for(let n of e[i])t.push(n);return{name:this.name,color:this.color,features:t,isUserDefined:this.isUserDefined}}}dispose(){for(let e of Object.keys(this))this[e]=void 0}}function dd(e,t,i,n){let r=Math.round((e-i)/n);let s=Math.round((t-i)/n)-r;return s<3&&(s=3,r-=1),{x:r,width:s}}class ud{constructor(e,t){this.featureMap={},this.genome=t;for(let i of e){const e=t?t.getChromosomeName(i.chr):i.chr;let n=this.featureMap[e];n||(n=[],this.featureMap[e]=n),n.push(i)}for(let e of Object.keys(this.featureMap))this.featureMap[e].sort(((e,t)=>e.start-t.start))}getFeatures({chr:e,start:t,end:i}){if("all"===e.toLowerCase())return Ic(this.featureMap,this.genome);{const n=this.featureMap[e];return n?n.filter((e=>e.end>t&&e.start<i)):[]}}getAllFeatures(){return this.featureMap}supportsWholeGenome(){return!0}addFeature(e){let t=this.featureMap[e.chr];t||(t=[],this.featureMap[e.chr]=t),t.push(e),t.sort(((e,t)=>e.start-t.start))}removeFeature({chr:e,start:t,end:i}){if(this.featureMap[e]){const n=`${e}-${t}-${i}`;this.featureMap[e]=this.featureMap[e].filter((e=>n!==`${e.chr}-${e.start}-${e.end}`))}}}class fd{constructor(e,t,i,n){this.rulerViewport=e,this.rulerSweeper=_t.div({class:"igv-ruler-sweeper"}),t.appendChild(this.rulerSweeper),this.browser=i,this.referenceFrame=n,this.isMouseHandlers=void 0,this.addBrowserObserver()}addBrowserObserver(){this.boundObserverHandler=(()=>{this.referenceFrame&&(Tl.isWholeGenomeView(this.referenceFrame.chr)?this.removeMouseHandlers():this.addMouseHandlers())}).bind(this),this.browser.on("locuschange",this.boundObserverHandler)}removeBrowserObserver(){this.browser.off("locuschange",this.boundObserverHandler)}addMouseHandlers(){if(!0===this.isMouseHandlers)return;let e,t,i,n,r,s;this.boundContentMouseDownHandler=function(s){e=!0,t=!0;const{x:o}=_t.translateMouseCoordinates(s,this.rulerViewport.contentDiv);n=i=o,r=1,this.rulerSweeper.style.display="block",this.rulerSweeper.style.backgroundColor=!0===s.shiftKey?hd:"rgba(68, 134, 247, 0.25)",this.rulerSweeper.style.left=`${n}px`,this.rulerSweeper.style.width=`${r}px`}.bind(this),this.rulerViewport.contentDiv.addEventListener("mousedown",this.boundContentMouseDownHandler),this.boundDocumentMouseMoveHandler=function(o){let a;if(e&&t){const{x:e}=_t.translateMouseCoordinates(o,this.rulerViewport.contentDiv);a=Math.max(Math.min(e,this.rulerViewport.contentDiv.clientWidth),0),s=a-i,r=Math.abs(s),this.rulerSweeper.style.width=`${r}px`,s<0&&(n=i+s,this.rulerSweeper.style.left=`${n}px`)}}.bind(this),document.addEventListener("mousemove",this.boundDocumentMouseMoveHandler),this.boundDocumentMouseUpHandler=function(i){let s;if(!0===e&&!0===t&&(e=t=void 0,this.rulerSweeper.style.display="none",r>1)){s={start:Math.floor(this.referenceFrame.calculateEnd(n)),end:Math.floor(this.referenceFrame.calculateEnd(n+r))};!0===i.shiftKey?this.browser.roiManager.updateUserDefinedROISet(Object.assign({chr:this.referenceFrame.chr},s)):(Aa(this.browser.genome.getChromosome(this.referenceFrame.chr).bpLength,s,this.browser.minimumBases()),function(e,t,i){e.start=Math.round(t.start),e.end=Math.round(t.end),e.bpPerPixel=(e.end-e.start)/i}(this.referenceFrame,s,this.rulerViewport.contentDiv.clientWidth),this.browser.updateViews(this.referenceFrame))}}.bind(this),document.addEventListener("mouseup",this.boundDocumentMouseUpHandler),this.isMouseHandlers=!0}removeMouseHandlers(){this.rulerViewport.contentDiv.removeEventListener("mousedown",this.boundContentMouseDownHandler),document.removeEventListener("mousemove",this.boundDocumentMouseMoveHandler),document.removeEventListener("mouseup",this.boundDocumentMouseUpHandler),this.isMouseHandlers=!1}dispose(){this.removeBrowserObserver(),this.removeMouseHandlers(),this.rulerSweeper.remove()}}class pd{constructor(e){this.paired=!0,this.firstAlignment=e,this.chr=e.chr,this.readName=e.readName,e.start<e.mate.position?(this.start=e.start,this.scStart=e.scStart,this.connectingStart=e.start+e.lengthOnRef,this.connectingEnd=e.mate.position):(this.start=e.mate.position,this.scStart=this.start,this.connectingStart=e.mate.position,this.connectingEnd=e.start),this.end=Math.max(e.mate.position,e.start+e.lengthOnRef),this.lengthOnRef=this.end-this.start;let t=Math.max(this.end,e.scStart+e.scLengthOnRef);this.scLengthOnRef=t-this.scStart}setSecondAlignment(e){this.secondAlignment=e;const t=this.firstAlignment;e.start>t.start?this.connectingEnd=e.start:this.connectingStart=e.start+e.lengthOnRef,this.start=Math.min(t.start,e.start),this.end=Math.max(t.start+t.lengthOnRef,e.start+e.lengthOnRef),this.lengthOnRef=this.end-this.start,this.scStart=Math.min(t.scStart,e.scStart);const i=Math.max(t.scStart+t.scLengthOnRef,e.scStart+e.scLengthOnRef);this.scLengthOnRef=i-this.scStart}containsLocation(e,t){const i=t?this.scStart:this.start,n=t?this.scLengthOnRef:this.lengthOnRef;return e>=i&&e<=i+n}alignmentContaining(e,t){return this.firstAlignment.containsLocation(e,t)?this.firstAlignment:this.secondAlignment&&this.secondAlignment.containsLocation(e,t)?this.secondAlignment:void 0}popupData(e){let t=this.firstAlignment.popupData(e);return this.secondAlignment&&(t.push("-------------------------------"),t=t.concat(this.secondAlignment.popupData(e))),t}isPaired(){return!0}isMateMapped(){return!0}isProperPair(){return this.firstAlignment.isProperPair()}get fragmentLength(){return Math.abs(this.firstAlignment.fragmentLength)}firstOfPairStrand(){return this.firstAlignment.isFirstOfPair()?this.firstAlignment.strand:this.secondAlignment&&this.secondAlignment.isFirstOfPair()?this.secondAlignment.strand:this.firstAlignment.mate.strand}hasTag(e){return this.firstAlignment.hasTag(e)||this.secondAlignment&&this.secondAlignment.hasTag(e)}}class gd{constructor(){this.alignments=[],this.score=void 0}findAlignment(e){const t=(e,t)=>t>=e.start&&t<e.start+e.lengthOnRef;let i;for(let n=0;n<this.alignments.length;n++){const r=this.alignments[n];if(e>=r.start&&e<r.start+r.lengthOnRef){r.paired?r.firstAlignment&&t(r.firstAlignment,e)?i=r.firstAlignment:r.secondAlignment&&t(r.secondAlignment,e)&&(i=r.secondAlignment):i=r;break}}return i}getSortValue({position:e,option:t,tag:i},n){t||(t="BASE");const r=this.findAlignment(e);if(void 0===r)return Number.MAX_VALUE;switch(t){case"NUCLEOTIDE":case"BASE":return function(e,t,i){let n;const r=Math.floor(i)-t.start;r<t.sequence.length&&(n=t.sequence.charAt(r));if(!n)return 0;const s=e.readBaseAt(i),o=e.readBaseQualityAt(i),a=t.coverageMap,l=Math.floor(i-a.bpStart),h=a.coverage[l];let c=0;if(e.insertions)for(let t of e.insertions)t.start===i&&(c=-h.ins);if(s)if(n=n.toUpperCase(),"N"===s&&0===c)c=2;else if(n!==s&&"="!==s||0!==c){if("X"===s||n!==s){c-=h["pos"+s]+h["neg"+s]+o/1e3}}else c=4-o/1e3;else{const e=h.del;e>0?c-=e:0===c&&(c=1)}return c}(r,n,e);case"STRAND":return r.strand?1:-1;case"START":return r.start;case"TAG":return r.tags()[i];case"READ_NAME":return r.readName;case"INSERT_SIZE":return-Math.abs(r.fragmentLength);case"GAP_SIZE":return-r.gapSizeAt(e);case"MATE_CHR":return r.mate;case"MQ":return void 0===r.mq?Number.MAX_VALUE:-r.mq;case"ALIGNED_READ_LENGTH":return-r.lengthOnRef;default:return Number.MAX_VALUE}}}function md(e){return e.isPaired()&&e.mate&&e.isMateMapped()&&e.chr===e.mate.chr&&(e.isFirstOfPair()||e.isSecondOfPair())&&!(e.isSecondary()||e.isSupplementary())}function bd(e){const t=[];for(let i of e)for(let e of i.alignments)e instanceof pd?(e.firstAlignment&&t.push(e.firstAlignment),e.secondAlignment&&t.push(e.secondAlignment)):t.push(e);return t}function wd(e,t,i,n){if(e){if(0===e.length)return[];{e.sort((function(e,t){return n?e.scStart-t.scStart:e.start-t.start}));const t=[];let i,r=0,s=0;const o=new Set,a=()=>{i=new gd,t.push(i),r=0,s=0,o.clear()};for(a();e.length>0;)if(s>=0&&s<e.length){const t=e[s];o.add(t),i.alignments.push(t),r=n?t.scStart+t.scLengthOnRef+2:t.start+t.lengthOnRef+2,s=vd(e,(e=>(n?e.scStart:e.start)>r),s)}else e=e.filter((e=>!o.has(e))),a();return t}}}function vd(e,t,i){let n=i-1,r=e.length;for(;1+n<r;){const i=n+(r-n>>1);t(e[i])?r=i:n=i}return r}class yd{constructor(e,t,i,{samplingWindowSize:n,samplingDepth:r,pairsSupported:s,alleleFreqThreshold:o}){this.chr=e,this.start=Math.floor(t),this.end=Math.ceil(i),this.length=i-t,this.alleleFreqThreshold=void 0===o?.2:o,this.coverageMap=new xd(e,t,i,this.alleleFreqThreshold),this.alignments=[],this.downsampledIntervals=[],this.samplingWindowSize=void 0===n?100:n,this.samplingDepth=void 0===r?1e3:r,this.pairsSupported=void 0===s||s,this.paired=!1,this.pairsCache={},this.downsampledReads=new Set,this.currentBucket=new _d(this.start,this.start+this.samplingWindowSize,this),this.filter=function(e){return e.isMapped()&&!e.isFailsVendorQualityCheck()}}push(e){!1!==this.filter(e)&&(this.coverageMap.incCounts(e),this.pairsSupported&&this.downsampledReads.has(e.readName)||(e.start>=this.currentBucket.end&&(this.finishBucket(),this.currentBucket=new _d(e.start,e.start+this.samplingWindowSize,this)),this.currentBucket.addAlignment(e)))}forEach(e){this.alignments.forEach(e)}finish(){void 0!==this.currentBucket&&this.finishBucket(),this.alignments.sort((function(e,t){return e.start-t.start})),this.pairsCache=void 0,this.downsampledReads=void 0}contains(e,t,i){return this.chr===e&&this.start<=t&&this.end>=i}hasDownsampledIntervals(){return this.downsampledIntervals&&this.downsampledIntervals.length>0}finishBucket(){this.alignments=this.alignments.concat(this.currentBucket.alignments),this.currentBucket.downsampledCount>0&&this.downsampledIntervals.push(new Cd(this.currentBucket.start,this.currentBucket.end,this.currentBucket.downsampledCount)),this.paired=this.paired||this.currentBucket.paired}setViewAsPairs(e){let t;t=e?function(e){const t={},i=[];for(let n of e)for(let e of n.alignments)if(md(e)){let n=t[e.readName];n?(n.setSecondAlignment(e),t[e.readName]=void 0):(n=new pd(e),t[e.readName]=n,i.push(n))}else i.push(e);return i}(this.packedAlignmentRows):bd(this.packedAlignmentRows),this.packedAlignmentRows=wd(t,this.start,this.end)}setShowSoftClips(e){const t=this.allAlignments();this.packedAlignmentRows=wd(t,this.start,this.end,e)}repack(e,t){const i=this.allAlignments();this.packedAlignmentRows=wd(i,this.start,this.end,t)}allAlignments(){const e=[];for(let t of this.packedAlignmentRows)for(let i of t.alignments)e.push(i);return e}getMax(e,t){return this.coverageMap.getMax(e,t)}sortRows(e){const t=[],i=[];for(let n of this.packedAlignmentRows){void 0!==n.findAlignment(e.position)?t.push(n):i.push(n)}t.sort(((t,i)=>{const n=e.direction,r=t.getSortValue(e,this),s=i.getSortValue(e,this);if(void 0===s&&void 0!==s)return 1;if(void 0!==r&&void 0===s)return-1;const o=r>s?1:r<s?-1:0;return!0===n?o:-o}));for(let e of i)t.push(e);this.packedAlignmentRows=t}}class _d{constructor(e,t,i){this.start=e,this.end=t,this.alignments=[],this.downsampledCount=0,this.samplingDepth=i.samplingDepth,this.pairsSupported=i.pairsSupported,this.downsampledReads=i.downsampledReads,this.pairsCache=i.pairsCache}addAlignment(e){var t,i,n;if(this.pairsSupported&&md(e)&&(n=this.pairsCache[e.readName]))return n.setSecondAlignment(e),void(this.pairsCache[e.readName]=void 0);this.alignments.length<this.samplingDepth?this.pairsSupported&&md(e)?(n=new pd(e),this.paired=!0,this.pairsCache[e.readName]=n,this.alignments.push(n)):this.alignments.push(e):((t=Math.floor(Math.random()*(this.samplingDepth+this.downsampledCount-1)))<this.samplingDepth?(i=this.alignments[t],this.pairsSupported&&md(e)?(void 0!==this.pairsCache[i.readName]&&(this.pairsCache[i.readName]=void 0),n=new pd(e),this.paired=!0,this.pairsCache[e.readName]=n,this.alignments[t]=n):this.alignments[t]=e,this.downsampledReads.add(i.readName)):this.downsampledReads.add(e.readName),this.downsampledCount++)}}class xd{constructor(e,t,i,n){this.chr=e,this.bpStart=t,this.length=i-t,this.coverage=new Array(this.length),this.maximum=0,this.threshold=n,this.qualityWeight=!0}getMax(e,t){let i=0;const n=this.coverage.length;for(let r=0;r<n;r++){const n=this.bpStart+r;if(n>t)break;const s=this.coverage[r];n>=e&&s&&(i=Math.max(i,s.total))}return i}incCounts(e){var t=this;if(void 0===e.blocks?i(e):e.blocks.forEach((function(e){i(e)})),e.gaps)for(let i of e.gaps)if("D"===i.type){const e=i.start-t.bpStart;for(let n=e;n<e+i.len;n++)n<0||(this.coverage[n]||(this.coverage[n]=new kd(t.threshold)),this.coverage[n].del++)}if(e.insertions)for(let i of e.insertions){const e=i.start-this.bpStart;e<0||(this.coverage[e]||(this.coverage[e]=new kd(t.threshold)),this.coverage[e].ins++)}function i(i){if("S"===i.type)return;const n=e.seq,r=e.qual,s=i.seqOffset;for(let o=i.start-t.bpStart,a=0;a<i.len;o++,a++){t.coverage[o]||(t.coverage[o]=new kd(t.threshold));const i=null==n?"N":n.charAt(s+a),l=e.strand?"pos"+i:"neg"+i,h=r&&s+a<r.length?r[s+a]:30;t.coverage[o][l]+=1,t.coverage[o]["qual"+i]+=h,t.coverage[o].total+=1,t.coverage[o].qual+=h,t.maximum=Math.max(t.coverage[o].total,t.maximum)}}}}class kd{constructor(e){this.qualityWeight=!0,this.posA=0,this.negA=0,this.posT=0,this.negT=0,this.posC=0,this.negC=0,this.posG=0,this.negG=0,this.posN=0,this.negN=0,this.pos=0,this.neg=0,this.qualA=0,this.qualT=0,this.qualC=0,this.qualG=0,this.qualN=0,this.qual=0,this.total=0,this.del=0,this.ins=0,this.threshold=e}hoverText(){const e=this.posA+this.posT+this.posC+this.posG+this.posN,t=this.negA+this.negT+this.negC+this.negG+this.negN;return`${this.total} (${e}+, ${t}-)`}isMismatch(e){const t=this.threshold*(this.qualityWeight&&this.qual?this.qual:this.total);let i=0;for(let t of["A","T","C","G"])t!==e&&(i+=this.qualityWeight&&this.qual?this["qual"+t]:this["pos"+t]+this["neg"+t]);return i>=t}}class Cd{constructor(e,t,i){this.start=e,this.end=t,this.counts=i}popupData(e){return[{name:"start",value:this.start+1},{name:"end",value:this.end},{name:"# downsampled:",value:this.counts}]}}class Sd{constructor(e){const t=e.split(",");this.chr=t[0],this.start=parseInt(t[1]),this.strand=t[2].charAt(0),this.mapQ=parseInt(t[4]),this.numMismatches=parseInt(t[5]),this.lenOnRef=Vd.computeLengthOnReference(t[3])}printString(){return this.chr+":"+$i(this.start)+"-"+$i(this.start+this.lenOnRef)+" ("+this.strand+") = "+$i(this.lenOnRef)+"bp @MAPQ: "+this.mapQ+" NM: "+this.numMismatches}}function Ad(e){return e.split(";").filter((e=>e.length>0)).map((e=>new Sd(e)))}const Ed={c:1,C:1,s:2,S:2,i:4,I:4,f:4};class Td{constructor(){this.hidden=!1}isMapped(){return 0==(4&this.flags)}isPaired(){return 0!=(1&this.flags)}isProperPair(){return 0!=(2&this.flags)}isFirstOfPair(){return 0!=(64&this.flags)}isSecondOfPair(){return 0!=(128&this.flags)}isSecondary(){return 0!=(256&this.flags)}isSupplementary(){return 0!=(2048&this.flags)}isFailsVendorQualityCheck(){return 0!=(512&this.flags)}isDuplicate(){return 0!=(1024&this.flags)}isMateMapped(){return 0==(8&this.flags)}isNegativeStrand(){return 0!=(16&this.flags)}isMateNegativeStrand(){return 0!=(32&this.flags)}hasTag(e){return(this.tagDict||Rd(this.tagBA)).hasOwnProperty(e)}tags(){return this.tagDict||(this.tagBA?(this.tagDict=Rd(this.tagBA),this.tagBA=void 0):this.tagDict={}),this.tagDict}containsLocation(e,t){const i=t?this.scStart:this.start,n=t?this.scLengthOnRef:this.lengthOnRef;return e>=i&&e<=i+n}popupData(e){const t=[];if(e=Math.floor(e),this.insertions){const n=this.seq;for(let r of this.insertions){var i=r.start;if(e===i||e===i-1)return t.push({name:"Insertion",value:n.substr(r.seqOffset,r.len)}),t.push({name:"Location",value:i}),t}}t.push({name:"Read Name",value:this.readName}),t.push("<hr/>"),t.push({name:"Alignment Start",value:$i(1+this.start),borderTop:!0}),t.push({name:"Read Strand",value:!0===this.strand?"(+)":"(-)",borderTop:!0});let n=this.cigar;if(n&&n.length>50){const e=25;n=`${n.substring(0,e-2)} ... ${n.substring(n.length-e+2)}`}t.push({name:"Cigar",value:n}),t.push({name:"Mapping Quality",value:this.mq}),t.push({name:"Secondary",value:o(this.isSecondary())}),t.push({name:"Supplementary",value:o(this.isSupplementary())}),t.push({name:"Duplicate",value:o(this.isDuplicate())}),t.push({name:"Failed QC",value:o(this.isFailsVendorQualityCheck())}),this.isPaired()&&(t.push("<hr/>"),t.push({name:"First in Pair",value:!this.isSecondOfPair(),borderTop:!0}),t.push({name:"Mate is Mapped",value:o(this.isMateMapped())}),this.pairOrientation&&t.push({name:"Pair Orientation",value:this.pairOrientation}),this.isMateMapped()&&(t.push({name:"Mate Chromosome",value:this.mate.chr}),t.push({name:"Mate Start",value:this.mate.position+1}),t.push({name:"Mate Strand",value:!0===this.mate.strand?"(+)":"(-)"}),t.push({name:"Insert Size",value:this.fragmentLength})));const r=this.tags();if(r.hasOwnProperty("SA")){t.push("<hr/>"),t.push({name:"Supplementary Alignments",value:""});const e=Ad(r.SA);if(e){t.push("<ul>");for(let i of e)t.push(`<li>${i.printString()}</li>`);t.push("</ul>")}}const s=new Set(["SA","MD"]);t.push("<hr/>");for(let e in r)s.has(e)||t.push({name:e,value:r[e]});return t.push({name:"Hidden Tags",value:"SA, MD"}),t.push("<hr/>"),t.push({name:"Genomic Location: ",value:$i(1+e)}),t.push({name:"Read Base:",value:this.readBaseAt(e)}),t.push({name:"Base Quality:",value:this.readBaseQualityAt(e)}),t;function o(e){return e?"Yes":"No"}}readBaseAt(e){const t=Md(this.blocks,e);if(t){if("*"===this.seq)return"*";{const i=t.seqIndexAt(e);return this.seq[i]}}}readBaseQualityAt(e){const t=Md(this.blocks,e);if(t){if("*"===this.qual)return 30;{const i=t.seqIndexAt(e);return i>=0&&this.qual&&i<this.qual.length?this.qual[i]:30}}}gapSizeAt(e){if(this.gaps)for(let t of this.gaps)if(e>=t.start&&e<t.start+t.len)return t.len;return 0}softClippedBlocks(){let e,t,i;for(let n of this.blocks)"S"===n.type?i?t=n:e=n:"H"!==n.type&&(i=!0);return{left:e,right:t}}}function Md(e,t){for(let i=0;i<e.length;i++){const n=e[i];if(t>=n.start&&t<n.start+n.len)return n}}function Rd(e){let t=0;const i=e.length,n={};for(;t<i;){const i=String.fromCharCode(e[t])+String.fromCharCode(e[t+1]);t+=2;const s=String.fromCharCode(e[t++]);let o;if("A"===s)o=String.fromCharCode(e[t]),t++;else if("i"===s||"I"===s)o=Ld(e,t),t+=4;else if("c"===s)o=Fd(e,t),t++;else if("C"===s)o=Bd(e,t),t++;else if("s"===s||"S"===s)o=Id(e,t),t+=2;else if("f"===s)o=Nd(e,t),t+=4;else if("Z"===s)for(o="";;){var r=e[t++];if(0===r)break;o+=String.fromCharCode(r)}else{if("B"!==s){o="Error unknown type: "+s,n[i]=o;break}{const r=String.fromCharCode(e[t++]);let s=Ed[r];if(void 0===s){n[i]=`Error: unknown element type '${r}'`;break}t+=4+Ld(e,t)*s,o="[not shown]"}}n[i]=o}return n}function Ld(e,t){return e[t+3]<<24|e[t+2]<<16|e[t+1]<<8|e[t]}function Id(e,t){return e[t+1]<<8|e[t]}function Nd(e,t){return new DataView(e.buffer).getFloat32(t)}function Fd(e,t){return new DataView(e.buffer).getInt8(t)}function Bd(e,t){return new DataView(e.buffer).getUint8(t)}class Od{constructor(e){e&&Object.assign(this,e)}seqIndexAt(e){return Math.floor(e)-this.start+this.seqOffset}}class Dd{constructor(e){e||(e={}),this.vendorFailed=void 0===e.vendorFailed||e.vendorFailed,this.duplicates=void 0===e.duplicates||e.duplicates,this.secondary=e.secondary||!1,this.supplementary=e.supplementary||!1,this.mqThreshold=void 0===e.mqThreshold?0:e.mqThreshold,e.readgroups&&(this.readgroups=new Set(e.readgroups))}pass(e){if(this.vendorFailed&&e.isFailsVendorQualityCheck())return!1;if(this.duplicates&&e.isDuplicate())return!1;if(this.secondary&&e.isSecondary())return!1;if(this.supplementary&&e.isSupplementary())return!1;if(e.mq<this.mqThreshold)return!1;if(this.readgroups){var t=e.tags().RG;return this.readgroups.has(t)}return!0}}const Pd=["=","A","C","x","G","x","x","x","T","x","x","x","x","x","x","N"],zd=["M","I","D","N","S","H","P","=","X","?","?","?","?","?","?","?"],Hd=jd(new Uint8Array([66,65,77,1]),0),Ud=1e4,Vd={readHeader:function(e,t,i){return ea.loadArrayBuffer(e,t).then((function(e){var t;return t=So(e),Vd.decodeBamHeader(t,i)}))},decodeBamHeader:function(e,t){var i,n,r,s,o;if((i=jd(e,0))!==Hd)throw new Error("BAM header errror: bad magic number.  This could be caused by either a corrupt or missing file.");n=jd(e,4);for(var a=0;a<n;++a)String.fromCharCode(e[a+8]);var l=jd(e,n+8),h=n+12;for(r={},s=[],o={},a=0;a<l;++a){for(var c=jd(e,h),d="",u=0;u<c-1;++u)d+=String.fromCharCode(e[h+4+u]);jd(e,h+c+4),r[d]=a,s[a]=d,t&&(o[t.getChromosomeName(d)]=d),h=h+8+c}return{magicNumber:i,size:h,chrNames:s,chrToIndex:r,chrAliasTable:o}},bam_tag2cigar:function(e,t,i,n,r,s){function o(e){return"C"===e||"c"===e||"A"===e?1:"S"===e||"s"===e?2:"I"===e||"i"===e||"f"===e?4:0}if(1!==s.length||r.start<0)return!1;for(var a=i+(n+1>>1)+n;a+4<t;){if("CG"===String.fromCharCode(e[a])+String.fromCharCode(e[a+1]))break;var l=String.fromCharCode(e[a+2]);if("B"===l)a+=8+o(l=String.fromCharCode(e[a+3]))*jd(e,a+4);else if("Z"===l||"H"===l)for(a+=3;0!==e[a++];);else a+=3+o(l)}if(a>=t)return!1;if("B"!==String.fromCharCode(e[a+2])||"I"!==String.fromCharCode(e[a+3]))return!1;var h=jd(e,a+4),c=a+8;if(c+4*h>t)return!1;var d="",u=0;s.length=0,a=c;for(var f=0;f<h;++f,a+=4){var p=jd(e,a),g=p>>4,m=zd[15&p];"M"!==m&&"EQ"!==m&&"X"!==m&&"D"!==m&&"N"!==m&&"="!==m||(u+=g),d=d+g+m,s.push({len:g,ltr:m})}return r.cigar=d,r.lengthOnRef=u,!0},decodeBamRecords:function(e,t,i,n,r,s,o,a){for(;t<e.length;){const u=t+jd(e,t)+4,f=new Td,p=jd(e,t+4),g=jd(e,t+8);if(u>e.length)return;if(p<0){t=u;continue}if(void 0!==r&&(p>r||g>o))return!0;if(void 0!==r&&p<r){t=u;continue}const m=jd(e,t+12),b=(65280&m)>>8,w=255&m,v=jd(e,t+16),y=(4294901760&v)>>16,_=65535&v,x=jd(e,t+20),k=jd(e,t+24),C=jd(e,t+28),S=jd(e,t+32);let A=[];for(let i=0;i<w-1;++i)A.push(String.fromCharCode(e[t+36+i]));A=A.join("");let E=0,T="",M=t+36+w;const R=[];let L;for(let t=0;t<_;++t){var l=jd(e,M),h=l>>4,c=zd[15&l];"M"!==c&&"EQ"!==c&&"X"!==c&&"D"!==c&&"N"!==c&&"="!==c||(E+=h),T=T+h+c,M+=4,L={len:h,ltr:c},R.push(L)}if(f.chr=n[p],f.start=g,f.flags=y,f.strand=!(16&y),f.readName=A,f.cigar=T,f.lengthOnRef=E,f.fragmentLength=S,f.mq=b,Vd.bam_tag2cigar(e,u,M,x,f,R),f.end=f.start+f.lengthOnRef,f.end<s){t=u;continue}let I=[];const N=x+1>>1;for(let t=0;t<N;++t){var d=e[M+t];I.push(Pd[(240&d)>>4]),I.push(Pd[15&d])}I=I.slice(0,x).join(""),M+=N;const F=[];for(let t=0;t<x;++t)F.push(e[M+t]);M+=x,k>=0&&(f.mate={chr:n[k],position:C,strand:!(32&y)}),f.seq=I,f.qual=F,f.tagBA=new Uint8Array(e.buffer.slice(M,u)),this.setPairOrientation(f),(void 0===a||a.pass(f))&&(qd(f,R),i.push(f)),t=u}},decodeSamRecords:function(e,t,i,n,r,s){var o,a,l,h,c,d,u,f,p,g;for(h=(o=Wi(e)).length,!1,a=0;a<h;a++)if(c=o[a].split("\t"),(p=new Td).chr=c[2],p.start=Number.parseInt(c[3])-1,p.flags=Number.parseInt(c[1]),p.readName=c[0],p.strand=!(16&p.flags),p.mq=Number.parseInt(c[4]),p.cigar=c[5],p.fragmentLength=Number.parseInt(c[8]),p.seq=c[9],"*"!==p.chr&&p.isMapped()&&p.chr===i){if(p.start>r)break;if(f=0,(g=$d(p.cigar)).forEach((function(e){var t=e.len,i=e.ltr;"M"!==i&&"EQ"!==i&&"X"!==i&&"D"!==i&&"N"!==i&&"="!==i||(f+=t)})),p.lengthOnRef=f,!(p.start+f<n)){for(d=c[10],p.qual=[],l=0;l<d.length;l++)p.qual[l]=d.charCodeAt(l)-33;p.tagDict=c.length<11?{}:Wd(c.slice(11)),p.isMateMapped()&&(u=c[6],p.mate={chr:"="===u?p.chr:u,position:Number.parseInt(c[7]),strand:!(32&p.flags)}),this.setPairOrientation(p),(void 0===s||s.pass(p))&&(qd(p,g),t.push(p))}}},setReaderDefaults:function(e,t){e.filter=new Dd(t.filter),t.readgroup&&(e.filter.readgroups=new Set([t.readgroup])),e.alleleFreqThreshold=void 0===t.alleleFreqThreshold?.2:t.alleleFreqThreshold,e.samplingWindowSize=void 0===t.samplingWindowSize?100:t.samplingWindowSize,e.samplingDepth=void 0===t.samplingDepth?500:t.samplingDepth,e.samplingDepth>Ud&&(console.log("Warning: attempt to set sampling depth > maximum value of "+Ud),e.samplingDepth=Ud),t.viewAsPairs?e.pairsSupported=!0:e.pairsSupported=void 0===t.pairsSupported||t.pairsSupported},setPairOrientation:function(e){if(e.isMapped()&&e.mate&&e.isMateMapped()&&e.mate.chr===e.chr){var t=e.strand?"F":"R",i=e.mate,n=i.strand?"F":"R",r=" ",s=" ";e.isFirstOfPair()?(r="1",s="2"):e.isSecondOfPair()&&(r="2",s="1");var o=[],a=e.fragmentLength,l=e.end-e.start;if(0===a)a=(e.start<i.position?i.position+l:i.position-l)-e.start;a>0?(o[0]=t,o[1]=r,o[2]=n,o[3]=s):(o[2]=t,o[3]=r,o[0]=n,o[1]=s),e.pairOrientation=o.join("")}},computeLengthOnReference:function(e){let t=0,i="";for(let n=0;n<e.length;n++){const r=e.charCodeAt(n);if(r>47&&r<58)i+=e.charAt(n);else{switch(r){case 78:case 68:case 77:case 61:case 88:t+=parseInt(i.toString())}i=""}}return t}};function qd(e,t){const i=[];let n,r,s=0,o=e.start;e.scStart=e.start,e.scLengthOnRef=e.lengthOnRef;for(let a of t){let t;switch(a.ltr){case"H":case"P":break;case"S":t=o,e.scLengthOnRef+=a.len,0===i.length&&(e.scStart-=a.len,t-=a.len),i.push(new Od({start:t,seqOffset:s,len:a.len,type:"S"})),s+=a.len;break;case"N":case"D":void 0===r&&(r=[]),r.push({start:o,len:a.len,type:a.ltr}),o+=a.len;break;case"I":void 0===n&&(n=[]),n.push(new Od({start:o,len:a.len,seqOffset:s,type:"I"})),s+=a.len;break;case"M":case"EQ":case"=":case"X":i.push(new Od({start:o,seqOffset:s,len:a.len,type:"M"})),s+=a.len,o+=a.len;break;default:console.log("Error processing cigar element: "+a.len+a.ltr)}}e.blocks=i,e.insertions=n,e.gaps=r}function jd(e,t){return e[t+3]<<24|e[t+2]<<16|e[t+1]<<8|e[t]}function $d(e){var t,i,n,r,s,o,a,l,h;for(t=[],i=[],s=null,r=e.length,n=0;n<r;n++)o=e.charAt(n),h=void 0,(h=o.charCodeAt(0))>=48&&h<=57?i.push(o):(a=o,l=Number.parseInt(i.join("")),i=[],null!==s&&s.ltr===a?s.len+=l:(s={len:l,ltr:a},t.push(s)));return t}function Wd(e){var t={};return e.forEach((function(e){var i=e.split(":");t[i[0]]=i[2]})),t}class Gd{constructor(e,t){this.config=e,this.genome=t,this.bamPath=e.url,this.isDataUri=Ma(e.url),Vd.setReaderDefaults(this,e)}async readAlignments(e,t,i){if(this.alignmentCache){const n=this.header,r=n.chrAliasTable.hasOwnProperty(e)?n.chrAliasTable[e]:e,s=this.alignmentCache.queryFeatures(r,t,i),o=new yd(e,t,i,this.config);for(let e of s)o.push(e);return o.finish(),o}if(this.isDataUri){const n=So(function(e){const t=e.split(","),i=t[0].split(":")[1];let n=t[1];n=i.indexOf("base64")>=0?atob(n):decodeURI(n);const r=new Uint8Array(n.length);for(var s=0;s<n.length;s++)r[s]=n.charCodeAt(s);return r}(this.bamPath).buffer);return this.parseAlignments(n),this.fetchAlignments(e,t,i)}{const n=So(await ea.loadArrayBuffer(this.bamPath,Ca(this.config)));return this.parseAlignments(n),this.fetchAlignments(e,t,i)}}parseAlignments(e){const t=[];this.header=Vd.decodeBamHeader(e),Vd.decodeBamRecords(e,this.header.size,t,this.header.chrNames),this.alignmentCache=new ha(t,this.genome)}fetchAlignments(e,t,i){const n=this.header.chrAliasTable.hasOwnProperty(e)?this.header.chrAliasTable[e]:e,r=this.alignmentCache.queryFeatures(n,t,i),s=new yd(e,t,i,this.config);for(let e of r)s.push(e);return s.finish(),s}}class Zd{constructor(e,t){this.config=e,this.genome=t,this.bamPath=e.url,this.baiPath=e.indexURL,Vd.setReaderDefaults(this,e),this._blockLoader=new cc(e)}async readAlignments(e,t,i){const n=(await this.getChrIndex())[this.chrAliasTable.hasOwnProperty(e)?this.chrAliasTable[e]:e],r=new yd(e,t,i,this.config);if(void 0===n)return r;{const e=(await this.getIndex()).chunksForRange(n,t,i);if(!e||0===e.length)return r;for(let s of e){const e=await this._blockLoader.getData(s.minv,s.maxv);if(Vd.decodeBamRecords(e,s.minv.offset,r,this.indexToChr,n,t,i,this.filter))break}return r.finish(),r}}async getHeader(){if(!this.header){const e=this.genome,t=await this.getIndex();let i;if(t.firstBlockPosition){const e=Ca(this.config,{range:{start:t.firstBlockPosition,size:26}}),n=Ao(await ea.loadArrayBuffer(this.bamPath,e));i=t.firstBlockPosition+n}else i=64e3;const n=Ca(this.config,{range:{start:0,size:i}});this.header=await Vd.readHeader(this.bamPath,n,e)}return this.header}async getIndex(){const e=this.genome;return this.index||(this.index=await rc(this.baiPath,this.config,e)),this.index}async getChrIndex(){if(this.chrToIndex)return this.chrToIndex;{const e=await this.getHeader();return this.chrToIndex=e.chrToIndex,this.indexToChr=e.chrNames,this.chrAliasTable=e.chrAliasTable,this.chrToIndex}}}class Qd{constructor(e,t){this.config=e,this.genome=t;const i={};e.sources.sequences.forEach((function(n){const r=t?t.getChromosomeName(n):n;i[r]=function(e,t,i){const n={url:e.sources.url.replace("$CHR",i)};e.sources.indexURL&&(n.indexURL=e.sources.indexURL.replace("$CHR",i));const r=Object.assign(e,n);return new Zd(r,t)}(e,t,n)})),this.bamReaders=i,Vd.setReaderDefaults(this,e)}async readAlignments(e,t,i){if(this.bamReaders.hasOwnProperty(e)){let n=this.bamReaders[e];return await n.readAlignments(e,t,i)}return new yd(e,t,i,this.config)}}const Xd=function(e,t){this.config=e,this.genome=t,Vd.setReaderDefaults(this,e)};function Yd(){const e=this,t=this.genome;if(this.header)return Promise.resolve(this.header);{const i=this.config.url+"?file="+this.config.alignmentFile+"&options=-b,-H",n=Ca(this.config);return Vd.readHeader(i,n,t).then((function(t){return e.header=t,t}))}}Xd.prototype.readAlignments=function(e,t,i){var n=this;return Yd.call(n).then((function(r){var s,o;return s=r.chrAliasTable.hasOwnProperty(e)?r.chrAliasTable[e]:e,o=n.config.url+"?reference="+n.config.referenceFile+"&file="+n.config.alignmentFile+"&region="+s+":"+t+"-"+i,ea.loadString(o,Ca(n.config)).then((function(o){var a;return r.chrToIndex[s],a=new yd(e,t,i,n.config),Vd.decodeSamRecords(o,a,s,t,i,n.filter),a}))}))};class Kd extends Ec{constructor(e,t){super(e,t),Vd.setReaderDefaults(this,e)}async readAlignments(e,t,i){if(!this.header){const e=So((await this.readHeaderData()).buffer);this.header=Vd.decodeBamHeader(e,this.genome),this.chrAliasTable=new Map;for(let e of Object.keys(this.header.chrAliasTable))this.chrAliasTable.set(e,this.header.chrAliasTable[e])}let n=this.chrAliasTable.has(e)?this.chrAliasTable.get(e):e;const r=So((await this.readData(n,t,i)).buffer),s=this.header.chrToIndex[e],o=new yd(e,t,i,this.config);return Vd.decodeBamRecords(r,this.header.size,o,this.header.chrNames,s,t,i),o.finish(),o}}
+/*! For license information please see cram-bundle.js.LICENSE.txt */const Jd=(()=>{var e={368:function(e,t,i){var n=this&&this.__awaiter||function(e,t,i,n){return new(i||(i=Promise))((function(r,s){function o(e){try{l(n.next(e))}catch(e){s(e)}}function a(e){try{l(n.throw(e))}catch(e){s(e)}}function l(e){var t;e.done?r(e.value):(t=e.value,t instanceof i?t:new i((function(e){e(t)}))).then(o,a)}l((n=n.apply(e,t||[])).next())}))},r=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const s=r(i(4105)),o=r(i(1269)),a=i(597),l=i(3427),h=i(8577);function c(e,t){if(t.some((e=>void 0===e)))throw new h.CramMalformedError("invalid .crai index file");const[i,n,r,s,o,a]=t;e[i]||(e[i]=[]),e[i].push({start:n,span:r,containerStart:s,sliceStart:o,sliceBytes:a})}t.default=class{constructor(e){this.filehandle=(0,l.open)(e.url,e.path,e.filehandle),this._parseCache=new s.default({cache:new o.default({maxSize:1}),fill:(e,t)=>this.parseIndex()})}parseIndex(){const e={};return this.filehandle.readFile().then((e=>31===e[0]&&139===e[1]?(0,a.unzip)(e):e)).then((t=>{if(t.length>4&&21578050===t.readUInt32LE(0))throw new h.CramMalformedError("invalid .crai index file. note: file appears to be a .bai index. this is technically legal but please open a github issue if you need support");let i=[],n="";for(let r=0;r<t.length;r+=1){const s=t[r];if(s>=48&&s<=57||!n&&45===s)n+=String.fromCharCode(s);else if(9===s)i.push(Number.parseInt(n,10)),n="";else if(10===s)i.push(Number.parseInt(n,10)),n="",c(e,i),i=[];else if(13!==s&&32!==s)throw new h.CramMalformedError("invalid .crai index file")}return n&&i.push(Number.parseInt(n,10)),6===i.length&&c(e,i),Object.entries(e).forEach((([t,i])=>{e[t]=i.sort(((e,t)=>e.start-t.start||e.span-t.span))})),e}))}getIndex(e={}){return this._parseCache.get("index",null,e.signal)}hasDataForReferenceSequence(e){return n(this,void 0,void 0,(function*(){return!!(yield this.getIndex())[e]}))}getEntriesForRange(e,t,i){return n(this,void 0,void 0,(function*(){const n=(yield this.getIndex())[e];if(!n)return[];const r=e=>{const n=e.start,r=e.start+e.span;return n>i?-1:r<=t?1:0},s=[];for(let e=0;e<n.length;e+=1)0===r(n[e])&&s.push(n[e]);return s}))}}},1050:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.default=class{constructor(e,t){this.parameters=e,this.dataType=t}}},4863:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const r=i(8577),s=n(i(1050)),o=i(1074);class a extends s.default{constructor(e,t){if(super(e,t),"int"!==this.dataType)throw new r.CramUnimplementedError(`${this.dataType} decoding not yet implemented by BETA codec`)}decode(e,t,i,n){return(0,o.getBits)(t.content,n.coreBlock,this.parameters.length)-this.parameters.offset}}t.default=a},1738:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const r=i(9488),s=n(i(1050));class o extends s.default{constructor(e,t,i){if(super(e,t),this.instantiateCodec=i,"byteArray"!==t)throw new TypeError(`byteArrayLength does not support data type ${t}`)}decode(e,t,i,n){const r=this._getLengthCodec().decode(e,t,i,n),s=this._getDataCodec(),o=new Uint8Array(r);for(let a=0;a<r;a+=1)o[a]=s.decode(e,t,i,n);return o}_getLengthCodec(){const e=this.parameters.lengthsEncoding;return this.instantiateCodec(e,"int")}_getDataCodec(){const e=this.parameters.valuesEncoding;return this.instantiateCodec(e,"byte")}}t.default=o,"_getLengthCodec _getDataCodec".split(" ").forEach((e=>(0,r.tinyMemoize)(o,e)))},1405:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const r=i(8577),s=n(i(1050)),o=i(1074);class a extends s.default{constructor(e,t){if(super(e,t),"byteArray"!==t)throw new TypeError(`byteArrayStop codec does not support data type ${t}`)}decode(e,t,i,n){const{blockContentId:s}=this.parameters,o=i[s];if(!o)throw new r.CramMalformedError(`no block found with content ID ${s}`);const a=n.externalBlocks.getCursor(s);return this._decodeByteArray(o,a)}_decodeByteArray(e,t){const i=e.content,{stopByte:n}=this.parameters,r=t.bytePosition;let s=t.bytePosition;for(;i[s]!==n&&s<i.length;){if(s===i.length)throw new o.CramBufferOverrunError("byteArrayStop reading beyond length of data buffer?");s+=1}return t.bytePosition=s+1,i.subarray(r,s)}}t.default=a},5844:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const r=i(8577),s=n(i(1050)),o=i(9488),a=i(1074);class l extends s.default{constructor(e,t){if(super(e,t),"int"===this.dataType)this._decodeData=this._decodeInt;else{if("byte"!==this.dataType)throw new r.CramUnimplementedError(`${this.dataType} decoding not yet implemented by EXTERNAL codec`);this._decodeData=this._decodeByte}}decode(e,t,i,n){const{blockContentId:s}=this.parameters,o=i[s];if(!o)throw new r.CramMalformedError(`no block found with content ID ${s}`);const a=n.externalBlocks.getCursor(s);return this._decodeData(o,a)}_decodeInt(e,t){const[i,n]=(0,o.parseItf8)(e.content,t.bytePosition);return t.bytePosition=t.bytePosition+n,i}_decodeByte(e,t){if(t.bytePosition>=e.content.length)throw new a.CramBufferOverrunError("attempted to read beyond end of block. this file seems truncated.");return e.content[t.bytePosition++]}}t.default=l},4229:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const r=i(8577),s=n(i(1050)),o=i(1074);class a extends s.default{constructor(e,t){if(super(e,t),"int"!==this.dataType)throw new r.CramUnimplementedError(`${this.dataType} decoding not yet implemented by GAMMA codec`)}decode(e,t,i,n){let r=1;for(;0===(0,o.getBits)(t.content,n.coreBlock,1);)r+=1;return((0,o.getBits)(t.content,n.coreBlock,r-1)|1<<r-1)-this.parameters.offset}}t.default=a},1074:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.getBits=t.CramBufferOverrunError=void 0;class i extends Error{}t.CramBufferOverrunError=i,t.getBits=function(e,t,n){let r=0;if(t.bytePosition+(7-t.bitPosition+n)/8>e.length)throw new i("read error during decoding. the file seems to be truncated.");for(let i=n;i;i--)r<<=1,r|=e[t.bytePosition]>>t.bitPosition&1,t.bitPosition-=1,t.bitPosition<0&&(t.bytePosition+=1),t.bitPosition&=7;return r}},2082:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const r=i(8577),s=n(i(1050)),o=i(1074);class a extends s.default{constructor(e,t){if(super(e,t),this.codes={},this.codeBook={},this.sortedByValue=[],this.sortedCodes=[],this.sortedValuesByBitCode=[],this.sortedBitCodes=[],this.sortedBitLengthsByBitCode=[],this.bitCodeToValue=[],!["byte","int"].includes(this.dataType))throw new TypeError(`${this.dataType} decoding not yet implemented by HUFFMAN_INT codec`);this.buildCodeBook(),this.buildCodes(),this.buildCaches(),0===this.sortedCodes[0].bitLength&&(this._decode=this._decodeZeroLengthCode)}buildCodeBook(){let e=new Array(this.parameters.numCodes);for(let t=0;t<this.parameters.numCodes;t+=1)e[t]={symbol:this.parameters.symbols[t],bitLength:this.parameters.bitLengths[t]};e=e.sort(((e,t)=>e.bitLength-t.bitLength||e.symbol-t.symbol)),this.codeBook={},e.forEach((e=>{this.codeBook[e.bitLength]||(this.codeBook[e.bitLength]=[]),this.codeBook[e.bitLength].push(e.symbol)}))}buildCodes(){this.codes={};let e=0,t=-1;Object.entries(this.codeBook).forEach((([i,n])=>{const s=parseInt(i,10);n.forEach((i=>{const n={bitLength:s,value:i,bitCode:0};t+=1;const o=s-e;if(t<<=o,n.bitCode=t,e+=o,function(e){let t=e-(e>>1)&1431655765;return t=(858993459&t)+(t>>2&858993459),16843009*(t+(t>>4)&252645135)>>24}(t)>s)throw new r.CramMalformedError("Symbol out of range");this.codes[i]=n}))}))}buildCaches(){this.sortedCodes=Object.values(this.codes).sort(((e,t)=>e.bitLength-t.bitLength||e.bitCode-t.bitCode)),this.sortedByValue=Object.values(this.codes).sort(((e,t)=>e.value-t.value)),this.sortedValuesByBitCode=this.sortedCodes.map((e=>e.value)),this.sortedBitCodes=this.sortedCodes.map((e=>e.bitCode)),this.sortedBitLengthsByBitCode=this.sortedCodes.map((e=>e.bitLength));const e=Math.max(...this.sortedBitCodes);this.bitCodeToValue=new Array(e+1).fill(-1);for(let e=0;e<this.sortedBitCodes.length;e+=1)this.bitCodeToValue[this.sortedCodes[e].bitCode]=e}decode(e,t,i,n){return this._decode(e,t,n.coreBlock)}_decodeZeroLengthCode(){return this.sortedCodes[0].value}_decode(e,t,i){const n=t.content;let s=0,a=0;for(let e=0;e<this.sortedCodes.length;e+=1){const t=this.sortedCodes[e].bitLength;a<<=t-s,a|=(0,o.getBits)(n,i,t-s),s=t;{const i=this.bitCodeToValue[a];if(i>-1&&this.sortedBitLengthsByBitCode[i]===t)return this.sortedValuesByBitCode[i];for(let i=e;this.sortedCodes[i+1].bitLength===t&&i<this.sortedCodes.length;i+=1)e+=1}}throw new r.CramMalformedError("Huffman symbol not found.")}}t.default=a},8772:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.instantiateCodec=void 0;const r=i(8577),s=n(i(2082)),o=n(i(5844)),a=n(i(1405)),l=n(i(1738)),h=n(i(4863)),c=n(i(4229)),d=n(i(8821)),u={1:o.default,3:s.default,4:l.default,5:a.default,6:h.default,7:d.default,9:c.default};t.instantiateCodec=function e(t,i){const n=(s="ignore"===i?0:t.codecId,u[s]);var s;if(!n)throw new r.CramUnimplementedError(`no codec implemented for codec ID ${t.codecId}`);return new n(t.parameters,i,e)}},8821:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const r=i(8577),s=n(i(1050)),o=i(1074);class a extends s.default{constructor(e,t){if(super(e,t),"int"!==this.dataType)throw new r.CramUnimplementedError(`${this.dataType} decoding not yet implemented by SUBEXP codec`)}decode(e,t,i,n){let r,s,a=0;for(;(0,o.getBits)(t.content,n.coreBlock,1);)a+=1;return 0===a?(r=this.parameters.K,s=(0,o.getBits)(t.content,n.coreBlock,r)):(r=a+this.parameters.K-1,s=1<<r|(0,o.getBits)(t.content,n.coreBlock,r)),s-this.parameters.offset}}t.default=a},2615:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.default={CRAM_FLAG_PRESERVE_QUAL_SCORES:1,CRAM_FLAG_DETACHED:2,CRAM_FLAG_MATE_DOWNSTREAM:4,CRAM_FLAG_NO_SEQ:8,CRAM_FLAG_MASK:15,CRAM_M_REVERSE:1,CRAM_M_UNMAP:2,BAM_FPAIRED:1,BAM_FPROPER_PAIR:2,BAM_FUNMAP:4,BAM_FMUNMAP:8,BAM_FREVERSE:16,BAM_FMREVERSE:32,BAM_FREAD1:64,BAM_FREAD2:128,BAM_FSECONDARY:256,BAM_FQCFAIL:512,BAM_FDUP:1024,BAM_FSUPPLEMENTARY:2048,BAM_CMATCH:0,BAM_CINS:1,BAM_CDEL:2,BAM_CREF_SKIP:3,BAM_CSOFT_CLIP:4,BAM_CHARD_CLIP:5,BAM_CPAD:6,BAM_CEQUAL:7,BAM_CDIFF:8,BAM_CBACK:9,BAM_CIGAR_STR:"MIDNSHP:XB",BAM_CIGAR_SHIFT:4,BAM_CIGAR_MASK:15,BAM_CIGAR_TYPE:246183}},8543:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0});const n=i(8772),r=i(8577),s={BF:"int",CF:"int",RI:"int",RL:"int",AP:"int",RG:"int",MF:"int",NS:"int",NP:"int",TS:"int",NF:"int",TC:"byte",TN:"int",FN:"int",FC:"byte",FP:"int",BS:"byte",IN:"byteArray",SC:"byteArray",DL:"int",BA:"byte",BB:"byteArray",RS:"int",PD:"int",HC:"int",MQ:"int",RN:"byteArray",QS:"byte",QQ:"byteArray",TL:"int"};t.default=class{constructor(e){this.dataSeriesCodecCache={},this.tagCodecCache={},this.tagEncoding={},this.readNamesIncluded=e.preservation.RN,this.APdelta=e.preservation.AP,this.referenceRequired=!!e.preservation.RR,this.tagIdsDictionary=e.preservation.TD,this.substitutionMatrix=function(e){const t=new Array(5);for(let e=0;e<5;e+=1)t[e]=new Array(4);return t[0][e[0]>>6&3]="C",t[0][e[0]>>4&3]="G",t[0][e[0]>>2&3]="T",t[0][e[0]>>0&3]="N",t[1][e[1]>>6&3]="A",t[1][e[1]>>4&3]="G",t[1][e[1]>>2&3]="T",t[1][e[1]>>0&3]="N",t[2][e[2]>>6&3]="A",t[2][e[2]>>4&3]="C",t[2][e[2]>>2&3]="T",t[2][e[2]>>0&3]="N",t[3][e[3]>>6&3]="A",t[3][e[3]>>4&3]="C",t[3][e[3]>>2&3]="G",t[3][e[3]>>0&3]="N",t[4][e[4]>>6&3]="A",t[4][e[4]>>4&3]="C",t[4][e[4]>>2&3]="G",t[4][e[4]>>0&3]="T",t}(e.preservation.SM),this.dataSeriesEncoding=e.dataSeriesEncoding,this.tagEncoding=e.tagEncoding,this.preservation=e.preservation,this._size=e._size,this._endPosition=e._endPosition}getCodecForTag(e){if(!this.tagCodecCache[e]){const t=this.tagEncoding[e];t&&(this.tagCodecCache[e]=(0,n.instantiateCodec)(t,"byteArray"))}return this.tagCodecCache[e]}getTagNames(e){return this.tagIdsDictionary[e]}getCodecForDataSeries(e){let t=this.dataSeriesCodecCache[e];if(void 0===t){const i=this.dataSeriesEncoding[e];if(i){const o=s[e];if(!o)throw new r.CramMalformedError(`data series name ${e} not defined in file compression header`);t=(0,n.instantiateCodec)(i,o),this.dataSeriesCodecCache[e]=t}}return t}toJSON(){const e={};return Object.keys(this).forEach((t=>{/Cache$/.test(t)||(e[t]=this[t])})),e}}},6284:function(e,t,i){var n=this&&this.__awaiter||function(e,t,i,n){return new(i||(i=Promise))((function(r,s){function o(e){try{l(n.next(e))}catch(e){s(e)}}function a(e){try{l(n.throw(e))}catch(e){s(e)}}function l(e){var t;e.done?r(e.value):(t=e.value,t instanceof i?t:new i((function(e){e(t)}))).then(o,a)}l((n=n.apply(e,t||[])).next())}))},r=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const s=i(8577),o=i(9488),a=r(i(6601)),l=r(i(8543));class h{constructor(e,t){this.file=e,this.filePosition=t}getHeader(){return this._readContainerHeader(this.filePosition)}getCompressionHeaderBlock(){return n(this,void 0,void 0,(function*(){if(!(yield this.getHeader()).numRecords)return null;const e=yield this.file.getSectionParsers(),t=yield this.getFirstBlock();if(void 0===t)return;if("COMPRESSION_HEADER"!==t.contentType)throw new s.CramMalformedError(`invalid content type ${t.contentType} in what is supposed to be the compression header block`);const i=(0,o.parseItem)(t.content,e.cramCompressionHeader.parser,0,t.contentPosition);return Object.assign(Object.assign({},t),{parsedContent:i})}))}getFirstBlock(){return n(this,void 0,void 0,(function*(){const e=yield this.getHeader();return this.file.readBlock(e._endPosition)}))}getCompressionScheme(){return n(this,void 0,void 0,(function*(){const e=yield this.getCompressionHeaderBlock();if(e)return new l.default(e.parsedContent)}))}getSlice(e,t){return new a.default(this,e,t)}_readContainerHeader(e){return n(this,void 0,void 0,(function*(){const t=yield this.file.getSectionParsers(),{cramContainerHeader1:i,cramContainerHeader2:n}=t,{size:r}=yield this.file.stat();if(e>=r)return;const s=Buffer.allocUnsafe(i.maxLength);yield this.file.read(s,0,i.maxLength,e);const a=(0,o.parseItem)(s,i.parser),l=(0,o.itf8Size)(a.numLandmarks);if(e+a.length>=r)return void console.warn(`${this.file}: container header at ${e} indicates that the container has length ${a.length}, which extends beyond the length of the file. Skipping this container.`);const h=Buffer.allocUnsafe(n.maxLength(a.numLandmarks));yield this.file.read(h,0,n.maxLength(a.numLandmarks),e+a._size-l);const c=(0,o.parseItem)(h,n.parser);return this.file.validateChecksums&&void 0!==c.crc32&&(yield this.file.checkCrc32(e,a._size+c._size-l-4,c.crc32,`container header beginning at position ${e}`)),Object.assign(a,c,{_size:a._size+c._size-l,_endPosition:a._size+c._size-l+e})}))}}t.default=h,"getHeader getCompressionHeaderBlock getCompressionScheme".split(" ").forEach((e=>(0,o.tinyMemoize)(h,e)))},5457:function(e,t,i){var n=this&&this.__awaiter||function(e,t,i,n){return new(i||(i=Promise))((function(r,s){function o(e){try{l(n.next(e))}catch(e){s(e)}}function a(e){try{l(n.throw(e))}catch(e){s(e)}}function l(e){var t;e.done?r(e.value):(t=e.value,t instanceof i?t:new i((function(e){e(t)}))).then(o,a)}l((n=n.apply(e,t||[])).next())}))},r=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const s=i(597),o=r(i(2779)),a=r(i(1269)),l=i(8577),h=r(i(9675)),c=i(6141),d=r(i(3498)),u=r(i(6284)),f=i(3427),p=i(9488),g=i(7578);class m{constructor(e){var t;if(this.file=(0,f.open)(e.url,e.path,e.filehandle),this.validateChecksums=!0,this.fetchReferenceSequenceCallback=e.seqFetch,this.options={checkSequenceMD5:e.checkSequenceMD5,cacheSize:null!==(t=e.cacheSize)&&void 0!==t?t:2e4},this.featureCache=new a.default({maxSize:this.options.cacheSize}),function(){const e=new Uint32Array([287454020]),t=new Uint8Array(e.buffer);return 68===t[0]?0:17===t[0]?1:2}()>0)throw new Error("Detected big-endian machine, may be unable to run")}read(e,t,i,n){return this.file.read(e,t,i,n)}stat(){return this.file.stat()}getDefinition(){return n(this,void 0,void 0,(function*(){const e=Buffer.allocUnsafe(c.cramFileDefinition.maxLength);yield this.file.read(e,0,c.cramFileDefinition.maxLength,0);const t=c.cramFileDefinition.parser.parse(e).result;if(2!==t.majorVersion&&3!==t.majorVersion)throw new l.CramUnimplementedError(`CRAM version ${t.majorVersion} not supported`);return t}))}getSamHeader(){return n(this,void 0,void 0,(function*(){const e=yield this.getContainerById(0);if(!e)throw new l.CramMalformedError("file contains no containers");const t=yield e.getFirstBlock();if(void 0===t)return(0,g.parseHeaderText)("");const i=t.content,n=i.readInt32LE(0),r=i.toString("utf8",4,4+n);return this.header=r,(0,g.parseHeaderText)(r)}))}getHeaderText(){return n(this,void 0,void 0,(function*(){return yield this.getSamHeader(),this.header}))}getSectionParsers(){return n(this,void 0,void 0,(function*(){const{majorVersion:e}=yield this.getDefinition();return(0,c.getSectionParsers)(e)}))}getContainerById(e){return n(this,void 0,void 0,(function*(){const t=yield this.getSectionParsers();let i=t.cramFileDefinition.maxLength;const{size:n}=yield this.file.stat(),{cramContainerHeader1:r}=t;let s;for(let t=0;t<=e;t+=1){if(i+r.maxLength+8>=n)return;s=this.getContainerAtPosition(i);const o=yield s.getHeader();if(!o)throw new l.CramMalformedError(`container ${e} not found in file`);if(0===t){i=o._endPosition;for(let e=0;e<o.numBlocks;e+=1){const e=yield this.readBlock(i);if(void 0===e)return;i=e._endPosition}}else i+=o._size+o.length}return s}))}checkCrc32(e,t,i,r){return n(this,void 0,void 0,(function*(){const n=Buffer.allocUnsafe(t);yield this.file.read(n,0,t,e);const s=o.default.unsigned(n);if(s!==i)throw new l.CramMalformedError(`crc mismatch in ${r}: recorded CRC32 = ${i}, but calculated CRC32 = ${s}`)}))}containerCount(){return n(this,void 0,void 0,(function*(){const e=yield this.getSectionParsers(),{size:t}=yield this.file.stat(),{cramContainerHeader1:i}=e;let n=0,r=e.cramFileDefinition.maxLength;for(;r+i.maxLength+8<t;){const e=yield this.getContainerAtPosition(r).getHeader();if(!e)break;if(0===n){r=e._endPosition;for(let t=0;t<e.numBlocks;t+=1){const e=yield this.readBlock(r);if(void 0===e)return;r=e._endPosition}}else r+=e._size+e.length;n+=1}return n}))}getContainerAtPosition(e){return new u.default(this,e)}readBlockHeader(e){return n(this,void 0,void 0,(function*(){const t=yield this.getSectionParsers(),{cramBlockHeader:i}=t,{size:n}=yield this.file.stat();if(e+i.maxLength>=n)return;const r=Buffer.allocUnsafe(i.maxLength);return yield this.file.read(r,0,i.maxLength,e),(0,p.parseItem)(r,i.parser,0,e)}))}_parseSection(e,t,i=e.maxLength,r){return n(this,void 0,void 0,(function*(){let n;if(r)n=r;else{const{size:e}=yield this.file.stat();if(t+i>=e)return;n=Buffer.allocUnsafe(i),yield this.file.read(n,0,i,t)}const s=(0,p.parseItem)(n,e.parser,0,t);if(s._size!==i)throw new l.CramMalformedError(`section read error: requested size ${i} does not equal parsed size ${s._size}`);return s}))}_uncompress(e,t,i){if("gzip"===e)(0,s.unzip)(t).copy(i);else if("bzip2"===e){const e=bzip2.array(t);let n,r=bzip2.header(e),s=0;do{n=bzip2.decompress(e,r),-1!=n&&(Buffer.from(n).copy(i,s),s+=n.length,r-=n.length)}while(-1!=n)}else if("rans"===e)(0,h.default)(t,i);else if("rans4x16"===e)d.default.r4x16_uncompress(t,i);else if("arith"===e)d.default.arith_uncompress(t,i);else if("fqzcomp"===e)d.default.fqzcomp_uncompress(t,i);else{if("tok3"!==e)throw new l.CramUnimplementedError(`${e} decompression not yet implemented`);d.default.tok3_uncompress(t,i)}}readBlock(e){return n(this,void 0,void 0,(function*(){const{majorVersion:t}=yield this.getDefinition(),i=yield this.getSectionParsers(),n=yield this.readBlockHeader(e);if(void 0===n)return;const r=n._endPosition,s=Buffer.allocUnsafe(n.uncompressedSize),o=Object.assign(Object.assign({},n),{_endPosition:r,contentPosition:r,content:s});if("raw"!==n.compressionMethod){const e=Buffer.allocUnsafe(n.compressedSize);yield this.read(e,0,n.compressedSize,r),this._uncompress(n.compressionMethod,e,s)}else yield this.read(s,0,n.uncompressedSize,r);if(t>=3){const t=yield this._parseSection(i.cramBlockCrc32,r+n.compressedSize);if(void 0===t)return;o.crc32=t.crc32,this.validateChecksums&&(yield this.checkCrc32(e,n._size+n.compressedSize,t.crc32,"block data")),o._endPosition=t._endPosition,o._size=o.compressedSize+i.cramBlockCrc32.maxLength}else o._endPosition=r+o.compressedSize,o._size=o.compressedSize;return o}))}}t.default=m,"getDefinition getSectionParsers getSamHeader".split(" ").forEach((e=>(0,p.tinyMemoize)(m,e)))},8222:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.CramRecord=void 0;const r=n(i(5457));var s=i(8631);Object.defineProperty(t,"CramRecord",{enumerable:!0,get:function(){return n(s).default}}),t.default=r.default},8631:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.MateFlagsDecoder=t.CramFlagsDecoder=t.BamFlagsDecoder=t.MateFlags=t.CramFlags=t.BamFlags=void 0;const r=n(i(2615)),s={a:0,A:0,c:1,C:1,g:2,G:2,t:3,T:3,n:4,N:4};function o(e){const t={};for(const[i,n]of e)t["is"+n]=e=>!!(e&i),t["set"+n]=e=>e|i;return t}t.BamFlags=[[1,"Paired"],[2,"ProperlyPaired"],[4,"SegmentUnmapped"],[8,"MateUnmapped"],[16,"ReverseComplemented"],[32,"MateReverseComplemented"],[64,"Read1"],[128,"Read2"],[256,"Secondary"],[512,"FailedQc"],[1024,"Duplicate"],[2048,"Supplementary"]],t.CramFlags=[[1,"PreservingQualityScores"],[2,"Detached"],[4,"WithMateDownstream"],[8,"DecodeSequenceAsStar"]],t.MateFlags=[[1,"OnNegativeStrand"],[2,"Unmapped"]],t.BamFlagsDecoder=o(t.BamFlags),t.CramFlagsDecoder=o(t.CramFlags),t.MateFlagsDecoder=o(t.MateFlags),t.default=class{constructor({flags:e,cramFlags:t,readLength:i,mappingQuality:n,lengthOnRef:r,qualityScores:s,mateRecordNumber:o,readBases:a,readFeatures:l,mateToUse:h,readGroupId:c,readName:d,sequenceId:u,uniqueId:f,templateSize:p,alignmentStart:g,tags:m}){this.flags=e,this.cramFlags=t,this.readLength=i,this.mappingQuality=n,this.lengthOnRef=r,this.qualityScores=s,a&&(this.readBases=a),this.readGroupId=c,this.readName=d,this.sequenceId=u,this.uniqueId=f,this.templateSize=p,this.alignmentStart=g,this.tags=m,l&&(this.readFeatures=l),h&&(this.mate={flags:h.mateFlags,readName:h.mateReadName,sequenceId:h.mateSequenceId,alignmentStart:h.mateAlignmentStart}),o&&(this.mateRecordNumber=o)}isPaired(){return!!(this.flags&r.default.BAM_FPAIRED)}isProperlyPaired(){return!!(this.flags&r.default.BAM_FPROPER_PAIR)}isSegmentUnmapped(){return!!(this.flags&r.default.BAM_FUNMAP)}isMateUnmapped(){return!!(this.flags&r.default.BAM_FMUNMAP)}isReverseComplemented(){return!!(this.flags&r.default.BAM_FREVERSE)}isMateReverseComplemented(){return!!(this.flags&r.default.BAM_FMREVERSE)}isRead1(){return!!(this.flags&r.default.BAM_FREAD1)}isRead2(){return!!(this.flags&r.default.BAM_FREAD2)}isSecondary(){return!!(this.flags&r.default.BAM_FSECONDARY)}isFailedQc(){return!!(this.flags&r.default.BAM_FQCFAIL)}isDuplicate(){return!!(this.flags&r.default.BAM_FDUP)}isSupplementary(){return!!(this.flags&r.default.BAM_FSUPPLEMENTARY)}isDetached(){return!!(this.cramFlags&r.default.CRAM_FLAG_DETACHED)}hasMateDownStream(){return!!(this.cramFlags&r.default.CRAM_FLAG_MATE_DOWNSTREAM)}isPreservingQualityScores(){return!!(this.cramFlags&r.default.CRAM_FLAG_PRESERVE_QUAL_SCORES)}isUnknownBases(){return!!(this.cramFlags&r.default.CRAM_FLAG_NO_SEQ)}getReadBases(){if(!this.readBases&&this._refRegion){const e=function(e,t){if(!e.lengthOnRef&&!e.readLength)return null;if(e.isUnknownBases())return null;const i=e.alignmentStart-t.start;if(!e.readFeatures)return t.seq.substr(i,e.lengthOnRef).toUpperCase();let n="",r=i,s=0;for(;n.length<e.readLength;)if(s<e.readFeatures.length){const i=e.readFeatures[s];if("Q"===i.code||"q"===i.code)s+=1;else if(i.pos===n.length+1)if(s+=1,"b"===i.code){const e=i.data;n+=e,r+=e.length}else"B"===i.code?(n+=i.data[0],r+=1):"X"===i.code?(n+=i.sub,r+=1):"I"===i.code?n+=i.data:"D"===i.code?r+=i.data:"i"===i.code?n+=i.data:"N"===i.code?r+=i.data:"S"===i.code?n+=i.data:"P"===i.code||i.code;else if(s<e.readFeatures.length){const i=t.seq.substr(r,e.readFeatures[s].pos-n.length-1);n+=i,r+=i.length}}else{const i=t.seq.substr(r,e.readLength-n.length);n+=i,r+=i.length}return n.toUpperCase()}(this,this._refRegion);e&&(this.readBases=e)}return this.readBases}getPairOrientation(){if(!this.isSegmentUnmapped()&&this.isPaired()&&!this.isMateUnmapped()&&this.mate&&this.sequenceId===this.mate.sequenceId){const e=this.isReverseComplemented()?"R":"F",t=this.isMateReverseComplemented()?"R":"F";let i=" ",n=" ";this.isRead1()?(i="1",n="2"):this.isRead2()&&(i="2",n="1");const r=[];let s=this.templateLength||this.templateSize;if(void 0===s)throw new Error("One of templateSize and templateLength must be set");return this.alignmentStart>this.mate.alignmentStart&&s>0&&(s=-s),s>0?(r[0]=e,r[1]=i,r[2]=t,r[3]=n):(r[2]=e,r[3]=i,r[0]=t,r[1]=n),r.join("")}return null}addReferenceSequence(e,t){this.readFeatures&&this.readFeatures.forEach((i=>{"X"===i.code&&function(e,t,i,n){if(!t)return;const r=n.refPos-t.start,o=t.seq.charAt(r);o&&(n.ref=o);let a=s[o];void 0===a&&(a=4);const l=i.substitutionMatrix[a][n.data];l&&(n.sub=l)}(0,e,t,i)})),!this.readBases&&e.start<=this.alignmentStart&&e.end>=this.alignmentStart+(this.lengthOnRef||this.readLength)-1&&(this._refRegion=e)}toJSON(){const e={};return Object.keys(this).forEach((t=>{"_"!==t.charAt(0)&&(e[t]=this[t])})),e.readBases=this.getReadBases(),e}}},6141:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.getSectionParsers=t.cramFileDefinition=t.isMappedSliceHeader=void 0;const n=i(9996),r=(new n.Parser).itf8(),s={parser:(new n.Parser).string("magic",{length:4}).uint8("majorVersion").uint8("minorVersion").string("fileId",{length:20,stripNull:!0}),maxLength:26};t.cramFileDefinition=s;const o={parser:(new n.Parser).uint8("compressionMethod",{formatter:e=>{const t=["raw","gzip","bzip2","lzma","rans","rans4x16","arith","fqzcomp","tok3"][e];if(!t)throw new Error(`compression method number ${e} not implemented`);return t}}).uint8("contentType",{formatter:e=>{const t=["FILE_HEADER","COMPRESSION_HEADER","MAPPED_SLICE_HEADER","UNMAPPED_SLICE_HEADER","EXTERNAL_DATA","CORE_DATA"][e];if(!t)throw new Error(`invalid block content type id ${e}`);return t}}).itf8("contentId").itf8("compressedSize").itf8("uncompressedSize"),maxLength:17},a={parser:(new n.Parser).uint32("crc32"),maxLength:4},l=(new n.Parser).itf8("size").buffer("ents",{length:"size",formatter:e=>{function t(t,i){const n=e.toString("utf8",t,i),r=[];for(let e=0;e<n.length;e+=3)r.push(n.substr(e,3));return r}var i,n=[],r=0;for(i=0;i<e.length;i+=1)e[i]||(n.push(t(r,i)),r=i+1);return i>r&&n.push(t(r,i)),n}}),h=(new n.Parser).uint8(null,{formatter:e=>!!e}),c=(new n.Parser).itf8("mapSize").itf8("mapCount").array("ents",{length:"mapCount",type:(new n.Parser).string("key",{length:2,stripNull:!1}).choice("value",{tag:"key",choices:{MI:h,UI:h,PI:h,RN:h,AP:h,RR:h,SM:(new n.Parser).array(null,{type:"uint8",length:5}),TD:(new n.Parser).nest(null,{type:l,formatter:e=>e.ents})}})});function d(e){const t={};for(let i=0;i<e.ents.length;i+=1){const{key:n,value:r}=e.ents[i];t[n]&&console.warn(`duplicate key ${n} in map`),t[n]=r}return t}const u={cramFileDefinition:s,cramBlockHeader:o,cramBlockCrc32:a};t.isMappedSliceHeader=function(e){return"number"==typeof e.refSeqId};const f={cramUnmappedSliceHeader(e){let t=0,i=(new n.Parser).itf8("numRecords");return t+=5,e>=3?(i=i.ltf8("recordCounter"),t+=9):2===e&&(i=i.itf8("recordCounter"),t+=5),i=i.itf8("numBlocks").itf8("numContentIds").array("contentIds",{type:r,length:"numContentIds"}),t+=10,e>=2&&(i=i.array("md5",{type:"uint8",length:16}),t+=16),{parser:i,maxLength:e=>t+5*e}},cramMappedSliceHeader(e){let t=(new n.Parser).itf8("refSeqId").itf8("refSeqStart").itf8("refSeqSpan").itf8("numRecords"),i=20;return e>=3?(t=t.ltf8("recordCounter"),i+=9):2===e&&(t=t.itf8("recordCounter"),i+=5),t=t.itf8("numBlocks").itf8("numContentIds").array("contentIds",{type:r,length:"numContentIds"}).itf8("refBaseBlockId"),i+=15,e>=2&&(t=t.array("md5",{type:"uint8",length:16}),i+=16),{parser:t,maxLength:e=>i+5*e}},cramEncoding:e=>({parser:(new n.Parser).namely("cramEncoding").itf8("codecId").itf8("parametersBytes").choice("parameters",{tag:"codecId",choices:{0:new n.Parser,1:(new n.Parser).itf8("blockContentId"),2:(new n.Parser).itf8("offset").itf8("M"),3:n.Parser.start().itf8("numCodes").array("symbols",{length:"numCodes",type:r}).itf8("numLengths").array("bitLengths",{length:"numLengths",type:r}),4:n.Parser.start().nest("lengthsEncoding",{type:"cramEncoding"}).nest("valuesEncoding",{type:"cramEncoding"}),5:(new n.Parser).uint8("stopByte").itf8("blockContentId"),6:(new n.Parser).itf8("offset").itf8("length"),7:(new n.Parser).itf8("offset").itf8("K"),8:(new n.Parser).itf8("offset").itf8("log2m"),9:(new n.Parser).itf8("offset")}})}),cramDataSeriesEncodingMap(e){return(new n.Parser).itf8("mapSize").itf8("mapCount").array("ents",{length:"mapCount",type:(new n.Parser).string("key",{length:2,stripNull:!1}).nest("value",{type:this.cramEncoding(e).parser})})},cramTagEncodingMap(e){return(new n.Parser).itf8("mapSize").itf8("mapCount").array("ents",{length:"mapCount",type:(new n.Parser).itf8("key",{formatter:e=>String.fromCharCode(e>>16&255)+String.fromCharCode(e>>8&255)+String.fromCharCode(255&e)}).nest("value",{type:this.cramEncoding(e).parser})})},cramCompressionHeader(e){let t=new n.Parser;return t=t.nest("preservation",{type:c,formatter:d}).nest("dataSeriesEncoding",{type:this.cramDataSeriesEncodingMap(e),formatter:d}).nest("tagEncoding",{type:this.cramTagEncodingMap(e),formatter:d}),{parser:t}},cramContainerHeader1(e){let t=(new n.Parser).int32("length").itf8("refSeqId").itf8("refSeqStart").itf8("alignmentSpan").itf8("numRecords"),i=24;return e>=3?(t=t.ltf8("recordCounter"),i+=9):2===e&&(t=t.itf8("recordCounter"),i+=5),e>1&&(t=t.ltf8("numBases"),i+=9),t=t.itf8("numBlocks").itf8("numLandmarks"),i+=10,{parser:t,maxLength:i}},cramContainerHeader2(e){let t=(new n.Parser).itf8("numLandmarks").array("landmarks",{type:(new n.Parser).itf8(),length:"numLandmarks"}),i=0;return e>=3&&(t=t.uint32("crc32"),i=4),{parser:t,maxLength:e=>5+5*e+i}}};t.getSectionParsers=function(e){const t=Object.assign({},u);return Object.keys(f).forEach((i=>{t[i]=f[i](e)})),t}},3757:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const r=n(i(3720)),s=i(8577),o=i(8631),a=i(6141);function l(e){let t="";for(let i=0;i<e.length&&0!==e[i];i++)t+=String.fromCharCode(e[i]);return t}function h(e,t){if("Z"===e)return l(t);if("A"===e)return String.fromCharCode(t[0]);if("I"===e)return r.default.fromBytesLE(t).toNumber();if("i"===e)return new Int32Array(t.buffer)[0];if("s"===e)return new Int16Array(t.buffer)[0];if("S"===e)return new Uint16Array(t.buffer)[0];if("c"===e)return new Int8Array(t.buffer)[0];if("C"===e)return t[0];if("f"===e)return new Float32Array(t.buffer)[0];if("H"===e)return Number.parseInt(l(t).replace(/^0x/,""),16);if("B"===e)return function(e){const t=String.fromCharCode(e[0]),i=Int32Array.from(e.slice(1))[0],n=new Array(i);if(e=e.slice(5),"c"===t){const t=new Int8Array(e.buffer);for(let e=0;e<i;e+=1)n[e]=t[e]}else if("C"===t){const t=new Uint8Array(e.buffer);for(let e=0;e<i;e+=1)n[e]=t[e]}else if("s"===t){const t=new Int16Array(e.buffer);for(let e=0;e<i;e+=1)n[e]=t[e]}else if("S"===t){const t=new Uint16Array(e.buffer);for(let e=0;e<i;e+=1)n[e]=t[e]}else if("i"===t){const t=new Int32Array(e.buffer);for(let e=0;e<i;e+=1)n[e]=t[e]}else if("I"===t){const t=new Uint32Array(e.buffer);for(let e=0;e<i;e+=1)n[e]=t[e]}else{if("f"!==t)throw new Error("unknown type: "+t);{const t=new Float32Array(e.buffer);for(let e=0;e<i;e+=1)n[e]=t[e]}}return n}(t);throw new s.CramMalformedError(`Unrecognized tag type ${e}`)}t.default=function(e,t,i,n,r,c,d,u,f){let p=t("BF");const g=t("CF");if(!(0,a.isMappedSliceHeader)(n.parsedContent))throw new Error;let m;m=u>1&&-2===n.parsedContent.refSeqId?t("RI"):n.parsedContent.refSeqId;const b=t("RL");let w=t("AP");i.APdelta&&(w+=d.lastAlignmentStart),d.lastAlignmentStart=w;const v=t("RG");let y,_,x,k;if(i.readNamesIncluded&&(y=l(t("RN"))),o.CramFlagsDecoder.isDetached(g)){const e=t("MF");let n;i.readNamesIncluded||(n=l(t("RN")),y=n);const r=t("NS"),s=t("NP");(e||r>-1)&&(_={mateFlags:e,mateSequenceId:r,mateAlignmentStart:s,mateReadName:n}),x=t("TS"),o.MateFlagsDecoder.isUnmapped(e)&&(p=o.BamFlagsDecoder.setMateUnmapped(p)),o.MateFlagsDecoder.isOnNegativeStrand(e)&&(p=o.BamFlagsDecoder.setMateReverseComplemented(p))}else o.CramFlagsDecoder.isWithMateDownstream(g)&&(k=t("NF")+f+1);const C=t("TL");if(C<0)throw new s.CramMalformedError("invalid TL index");const S={},A=i.getTagNames(C),E=A.length;for(let t=0;t<E;t+=1){const n=A[t],o=n.substr(0,2),a=n.substr(2,1),l=i.getCodecForTag(n);if(!l)throw new s.CramMalformedError(`no codec defined for auxiliary tag ${n}`);const u=l.decode(e,r,c,d);S[o]=h(a,u)}let T,M,R,L,I;if(o.BamFlagsDecoder.isSegmentUnmapped(p))if(o.CramFlagsDecoder.isDecodeSequenceAsStar(g))I=null,L=null;else{const e=new Array(b);for(let i=0;i<e.length;i+=1)e[i]=t("BA");if(I=String.fromCharCode(...e),o.CramFlagsDecoder.isPreservingQualityScores(g)){L=new Array(b);for(let i=0;i<e.length;i+=1)L[i]=t("QS")}}else{const e=t("FN");if(e&&(T=function(e,t,i,n,r){let o=0,a=e-1;const l=new Array(t);function h([e,t]){const n=i(t);if("character"===e)return String.fromCharCode(n);if("string"===e){let e="";for(let t=0;t<n.byteLength;t++)e+=String.fromCharCode(n[t]);return e}return"numArray"===e?n.toArray():n}for(let e=0;e<t;e+=1){const t=String.fromCharCode(i("FC")),n=i("FP"),c={B:["character","BA"],S:["string",r>1?"SC":"IN"],X:["number","BS"],D:["number","DL"],I:["string","IN"],i:["character","BA"],b:["string","BB"],q:["numArray","QQ"],Q:["number","QS"],H:["number","HC"],P:["number","PD"],N:["number","RS"]}[t];if(!c)throw new s.CramMalformedError(`invalid read feature code "${t}"`);let d=h(c);const u={B:["number","QS"]}[t];u&&(d=[d,h(u)]),o+=n;const f=o;a+=n;const p=a;"D"===t||"N"===t?a+=d:"I"===t||"S"===t?a-=d.length:"i"===t&&(a-=1),l[e]={code:t,pos:f,refPos:p,data:d}}return l}(w,e,t,0,u)),M=b,T)for(const{code:e,data:t}of T)"D"===e||"N"===e?M+=t:"I"===e||"S"===e?M-=t.length:"i"===e&&(M-=1);if(Number.isNaN(M)&&(console.warn(`${y||`${m}:${w}`} record has invalid read features`),M=b),R=t("MQ"),o.CramFlagsDecoder.isPreservingQualityScores(g)){L=new Array(b);for(let e=0;e<L.length;e++)L[e]=t("QS")}}return{readLength:b,sequenceId:m,cramFlags:g,flags:p,alignmentStart:w,readGroupId:v,readName:y,mateToUse:_,templateSize:x,mateRecordNumber:k,readFeatures:T,lengthOnRef:M,mappingQuality:R,qualityScores:L,readBases:I,tags:S}}},6601:function(e,t,i){var n=this&&this.__awaiter||function(e,t,i,n){return new(i||(i=Promise))((function(r,s){function o(e){try{l(n.next(e))}catch(e){s(e)}}function a(e){try{l(n.throw(e))}catch(e){s(e)}}function l(e){var t;e.done?r(e.value):(t=e.value,t instanceof i?t:new i((function(e){e(t)}))).then(o,a)}l((n=n.apply(e,t||[])).next())}))},r=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const s=i(8577),o=i(9488),a=r(i(2615)),l=r(i(3757)),h=r(i(8631)),c=i(6141),d=i(1074);function u(e,t,i,n){if(!n)throw new s.CramMalformedError("could not resolve intra-slice mate pairs, file seems truncated or malformed");const r=!!(n.mate||void 0!==n.mateRecordNumber&&n.mateRecordNumber!==t);i.readName||(i.readName=String(i.uniqueId),n.readName=i.readName),i.mate={sequenceId:n.sequenceId,alignmentStart:n.alignmentStart,uniqueId:n.uniqueId},n.readName&&(i.mate.readName=n.readName),n.mate||void 0!==n.mateRecordNumber||(n.mate={sequenceId:i.sequenceId,alignmentStart:i.alignmentStart,uniqueId:i.uniqueId},i.readName&&(n.mate.readName=i.readName)),i.flags|=a.default.BAM_FPAIRED,n.flags&a.default.BAM_FUNMAP&&(i.flags|=a.default.BAM_FMUNMAP),i.flags&a.default.BAM_FUNMAP&&(n.flags|=a.default.BAM_FMUNMAP),n.flags&a.default.BAM_FREVERSE&&(i.flags|=a.default.BAM_FMREVERSE),i.flags&a.default.BAM_FREVERSE&&(n.flags|=a.default.BAM_FMREVERSE),void 0===i.templateLength&&(r?function(e,t,i){const n=function t(i){const n=[i];if(void 0!==i.mateRecordNumber&&i.mateRecordNumber>=0){const r=e[i.mateRecordNumber];if(!r)throw new s.CramMalformedError("intra-slice mate record not found, this file seems malformed");n.push(...t(r))}return n}(i),r=n.map((e=>e.alignmentStart)),o=n.map((e=>e.alignmentStart+e.readLength-1)),a=Math.max(...o)-Math.min(...r)+1;a>=0&&n.forEach((e=>{if(void 0!==e.templateLength)throw new s.CramMalformedError("mate pair group has some members that have template lengths already, this file seems malformed");e.templateLength=a}))}(e,0,i):function(e,t){const i=Math.min(e.alignmentStart,t.alignmentStart),n=Math.max(e.alignmentStart+e.readLength-1,t.alignmentStart+t.readLength-1)-i+1;e.templateLength=n,t.templateLength=n}(i,n)),delete i.mateRecordNumber}class f{constructor(e,t,i){this.container=e,this.containerPosition=t,this.file=e.file}getHeader(){return n(this,void 0,void 0,(function*(){const e=yield this.file.getSectionParsers(),t=yield this.container.getHeader(),i=yield this.file.readBlock(t._endPosition+this.containerPosition);if(void 0===i)throw new Error;if("MAPPED_SLICE_HEADER"===i.contentType){const n=(0,o.parseItem)(i.content,e.cramMappedSliceHeader.parser,0,t._endPosition);return Object.assign(Object.assign({},i),{parsedContent:n})}if("UNMAPPED_SLICE_HEADER"===i.contentType){const n=(0,o.parseItem)(i.content,e.cramUnmappedSliceHeader.parser,0,t._endPosition);return Object.assign(Object.assign({},i),{parsedContent:n})}throw new s.CramMalformedError(`error reading slice header block, invalid content type ${i.contentType}`)}))}getBlocks(){return n(this,void 0,void 0,(function*(){const e=yield this.getHeader();let t=e._endPosition;const i=new Array(e.parsedContent.numBlocks);for(let e=0;e<i.length;e+=1){const n=yield this.file.readBlock(t);if(void 0===n)throw new Error;i[e]=n,t=i[e]._endPosition}return i}))}getCoreDataBlock(){return n(this,void 0,void 0,(function*(){return(yield this.getBlocks())[0]}))}_getBlocksContentIdIndex(){return n(this,void 0,void 0,(function*(){const e=yield this.getBlocks(),t={};return e.forEach((e=>{"EXTERNAL_DATA"===e.contentType&&(t[e.contentId]=e)})),t}))}getBlockByContentId(e){return n(this,void 0,void 0,(function*(){return(yield this._getBlocksContentIdIndex())[e]}))}getReferenceRegion(){return n(this,void 0,void 0,(function*(){const e=(yield this.getHeader()).parsedContent;if(!(0,c.isMappedSliceHeader)(e))throw new Error;if(e.refSeqId<0)return;const t=yield this.container.getCompressionScheme();if(void 0===t)throw new Error;if(e.refBaseBlockId>=0){const t=yield this.getBlockByContentId(e.refBaseBlockId);if(!t)throw new s.CramMalformedError("embedded reference specified, but reference block does not exist");return{seq:t.data.toString("utf8"),start:e.refSeqStart,end:e.refSeqStart+e.refSeqSpan-1,span:e.refSeqSpan}}if(t.referenceRequired||this.file.fetchReferenceSequenceCallback){if(!this.file.fetchReferenceSequenceCallback)throw new Error("reference sequence not embedded, and seqFetch callback not provided, cannot fetch reference sequence");const t=yield this.file.fetchReferenceSequenceCallback(e.refSeqId,e.refSeqStart,e.refSeqStart+e.refSeqSpan-1);if(t.length!==e.refSeqSpan)throw new s.CramArgumentError("seqFetch callback returned a reference sequence of the wrong length");return{seq:t,start:e.refSeqStart,end:e.refSeqStart+e.refSeqSpan-1,span:e.refSeqSpan}}}))}getAllRecords(){return this.getRecords((()=>!0))}_fetchRecords(){return n(this,void 0,void 0,(function*(){const{majorVersion:e}=yield this.file.getDefinition(),t=yield this.container.getCompressionScheme();if(void 0===t)throw new Error;const i=yield this.getHeader();if(void 0===i)throw new Error;const n=yield this._getBlocksContentIdIndex();if(e>1&&this.file.options.checkSequenceMD5&&(0,c.isMappedSliceHeader)(i.parsedContent)&&i.parsedContent.refSeqId>=0&&"0000000000000000"!==i.parsedContent.md5.join("")){const e=yield this.getReferenceRegion();if(e){const{seq:t,start:n,end:r}=e,a=(0,o.sequenceMD5)(t),l=i.parsedContent.md5.map((e=>(e<16?"0":"")+e.toString(16))).join("");if(a!==l)throw new s.CramMalformedError(`MD5 checksum reference mismatch for ref ${i.parsedContent.refSeqId} pos ${n}..${r}. recorded MD5: ${l}, calculated MD5: ${a}`)}}const r=yield this.getCoreDataBlock(),a={lastAlignmentStart:(0,c.isMappedSliceHeader)(i.parsedContent)?i.parsedContent.refSeqStart:0,coreBlock:{bitPosition:7,bytePosition:0},externalBlocks:{map:new Map,getCursor(e){let t=this.map.get(e);return void 0===t&&(t={bitPosition:7,bytePosition:0},this.map.set(e,t)),t}}},f=e=>{const i=t.getCodecForDataSeries(e);if(!i)throw new s.CramMalformedError(`no codec defined for ${e} data series`);return i.decode(this,r,n,a)};let p=new Array(i.parsedContent.numRecords);for(let s=0;s<p.length;s+=1)try{const o=(0,l.default)(this,f,t,i,r,n,a,e,s);p[s]=new h.default(Object.assign(Object.assign({},o),{uniqueId:i.contentPosition+i.parsedContent.recordCounter+s+1}))}catch(e){if(e instanceof d.CramBufferOverrunError){console.warn("read attempted beyond end of buffer, file seems truncated."),p=p.filter((e=>!!e));break}throw e}for(let e=0;e<p.length;e+=1){const{mateRecordNumber:t}=p[e];void 0!==t&&t>=0&&u(p,e,p[e],p[t])}return p}))}getRecords(e){return n(this,void 0,void 0,(function*(){const t=this.container.filePosition+this.containerPosition;let i=this.file.featureCache.get(t.toString());i||(i=this._fetchRecords(),this.file.featureCache.set(t.toString(),i));const r=(yield i).filter(e);if(r.length&&this.file.fetchReferenceSequenceCallback){const e=yield this.getHeader();if((0,c.isMappedSliceHeader)(e.parsedContent)&&(e.parsedContent.refSeqId>=0||-2===e.parsedContent.refSeqId)){const t=e.parsedContent.refSeqId>=0?e.parsedContent.refSeqId:void 0,i=yield this.container.getCompressionScheme();if(void 0===i)throw new Error;const s={};for(let e=0;e<r.length;e+=1){const i=void 0!==t?t:r[e].sequenceId;let n=s[i];n||(n={id:i,start:r[e].alignmentStart,end:-1/0,seq:null},s[i]=n);const o=r[e].alignmentStart+(r[e].lengthOnRef||r[e].readLength)-1;o>n.end&&(n.end=o),r[e].alignmentStart<n.start&&(n.start=r[e].alignmentStart)}yield Promise.all(Object.values(s).map((e=>n(this,void 0,void 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r;if(n<128?(r=n,i+=1):n<192?(r=16383&(n<<8|e[i+1]),i+=2):n<224?(r=2097151&(n<<16|e[i+1]<<8|e[i+2]),i+=3):n<240?(r=268435455&(n<<24|e[i+1]<<16|e[i+2]<<8|e[i+3]),i+=4):(r=(15&n)<<28|e[i+1]<<20|e[i+2]<<12|e[i+3]<<4|15&e[i+4],i+=5),i>e.length)throw new s.CramBufferOverrunError("Attempted to read beyond end of buffer; this file seems truncated.");return[r,i-t]},t.parseItem=function(e,t,i=0,n=0){const{offset:r,result:s}=t.parse(e);return Object.assign(Object.assign({},s),{_endPosition:r+n,_size:r-i})},t.tinyMemoize=function(e,t){const i=e.prototype[t],n=`_memo_${t}`;e.prototype[t]=function(){if(!(n in this)){const e=i.call(this);this[n]=e,Promise.resolve(e).catch((()=>{delete this[n]}))}return this[n]}},t.sequenceMD5=function(e){return(0,r.default)(e.toUpperCase().replace(/[^\x21-\x7e]/g,""))}},8577:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.CramArgumentError=t.CramSizeLimitError=t.CramMalformedError=t.CramUnimplementedError=t.CramError=void 0;class i extends Error{}t.CramError=i;class n extends Error{}t.CramUnimplementedError=n,t.CramMalformedError=class extends i{},t.CramSizeLimitError=class extends i{},t.CramArgumentError=class extends i{}},5590:function(e,t,i){var n=this&&this.__createBinding||(Object.create?function(e,t,i,n){void 0===n&&(n=i);var r=Object.getOwnPropertyDescriptor(t,i);r&&!("get"in r?!t.__esModule:r.writable||r.configurable)||(r={enumerable:!0,get:function(){return t[i]}}),Object.defineProperty(e,n,r)}:function(e,t,i,n){void 0===n&&(n=i),e[n]=t[i]}),r=this&&this.__setModuleDefault||(Object.create?function(e,t){Object.defineProperty(e,"default",{enumerable:!0,value:t})}:function(e,t){e.default=t}),s=this&&this.__importStar||function(e){if(e&&e.__esModule)return e;var t={};if(null!=e)for(var i in e)"default"!==i&&Object.prototype.hasOwnProperty.call(e,i)&&n(t,e,i);return r(t,e),t},o=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.CramRecord=t.CraiIndex=t.IndexedCramFile=t.CramFile=void 0;const a=s(i(8222));t.CramFile=a.default,Object.defineProperty(t,"CramRecord",{enumerable:!0,get:function(){return a.CramRecord}});const l=o(i(946));t.IndexedCramFile=l.default;const h=o(i(368));t.CraiIndex=h.default},946:function(e,t,i){var n=this&&this.__awaiter||function(e,t,i,n){return new(i||(i=Promise))((function(r,s){function o(e){try{l(n.next(e))}catch(e){s(e)}}function a(e){try{l(n.throw(e))}catch(e){s(e)}}function l(e){var t;e.done?r(e.value):(t=e.value,t instanceof i?t:new i((function(e){e(t)}))).then(o,a)}l((n=n.apply(e,t||[])).next())}))},r=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const s=i(8577),o=r(i(8222));t.default=class{constructor(e){if(e.cram?this.cram=e.cram:this.cram=new 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0!==n.lengthOnRef&&n.alignmentStart+n.lengthOnRef-1>=t,h=yield Promise.all(o.map((e=>this.getRecordsInSlice(e,l))));let c=Array.prototype.concat(...h);if(r.viewAsPairs){const e={},t={};for(let i=0;i<c.length;i+=1){const n=c[i].readName;if(void 0===n)throw new Error;const r=c[i].uniqueId;e[n]||(e[n]=0),e[n]+=1,t[r]=1}const i={};Object.entries(e).forEach((([e,t])=>{1===t&&(i[e]=!0)}));const s=[];for(let e=0;e<c.length;e+=1){const t=c[e],o=t.readName;if(void 0===o)throw new Error;if(i[o]&&t.mate&&(t.mate.sequenceId===n||r.pairAcrossChr)&&Math.abs(t.alignmentStart-t.mate.alignmentStart)<r.maxInsertSize){const e=this.index.getEntriesForRange(t.mate.sequenceId,t.mate.alignmentStart,t.mate.alignmentStart+1);s.push(e)}}const o=yield Promise.all(s);let a=[];for(let e=0;e<o.length;e+=1)a.push(...o[e]);a=a.sort(((e,t)=>e.toString().localeCompare(t.toString()))).filter(((e,t,i)=>!t||e.toString()!==i[t-1].toString()));const l=[],h=a.map((e=>e.sliceBytes)).reduce(((e,t)=>e+t),0);if(h>this.fetchSizeLimit)throw new Error(`mate data size of ${h.toLocaleString()} bytes exceeded fetch size limit of ${this.fetchSizeLimit.toLocaleString()} bytes`);a.forEach((e=>{let n=this.cram.featureCache.get(e.toString());n||(n=this.getRecordsInSlice(e,(()=>!0)),this.cram.featureCache.set(e.toString(),n));const r=n.then((e=>{const n=[];for(let r=0;r<e.length;r+=1){const s=e[r];if(void 0===s.readName)throw new Error;i[s.readName]&&!t[s.uniqueId]&&n.push(s)}return n}));l.push(r)}));const d=yield Promise.all(l);if(d.length){const e=d.reduce(((e,t)=>e.concat(t)));c=c.concat(e)}}return c}))}getRecordsInSlice({containerStart:e,sliceStart:t,sliceBytes:i},n){return this.cram.getContainerAtPosition(e).getSlice(t,i).getRecords(n)}hasDataForReferenceSequence(e){return this.index.hasDataForReferenceSequence(e)}}},3427:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.open=t.fromUrl=t.RemoteFile=t.LocalFile=void 0;const r=n(i(8575)),s=i(4319),o=i(2949);function a(e){const{protocol:t,pathname:i}=r.default.parse(e);return"file:"===t?new o.LocalFile(unescape((0,s.ensureNotNullish)(i))):new o.RemoteFile(e)}Object.defineProperty(t,"LocalFile",{enumerable:!0,get:function(){return o.LocalFile}}),Object.defineProperty(t,"RemoteFile",{enumerable:!0,get:function(){return o.RemoteFile}}),t.fromUrl=a,t.open=function(e,t,i){if(i)return i;if(e)return a(e);if(t)return new o.LocalFile(t);throw new Error("no url, path, or filehandle provided, cannot open")}},5702:(e,t)=>{Object.defineProperty(t,"__esModule",{value:!0}),t.RANS_BYTE_L=t.TOTFREQ=t.TF_SHIFT=void 0,t.TF_SHIFT=12,t.TOTFREQ=4096,t.RANS_BYTE_L=1<<23},6484:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const r=i(8577),s=i(5702),o=n(i(7634));t.default=function(e,t,i,n){let a=e.getInt(),l=e.getInt(),h=e.getInt(),c=e.getInt();const d=n.remaining(),u=-4&d;for(let r=0;r<u;r+=4){const d=t.R[o.default.get(a,s.TF_SHIFT)],u=t.R[o.default.get(l,s.TF_SHIFT)],f=t.R[o.default.get(h,s.TF_SHIFT)],p=t.R[o.default.get(c,s.TF_SHIFT)];n.putAt(r,d),n.putAt(r+1,u),n.putAt(r+2,f),n.putAt(r+3,p),a=o.default.advanceSymbolStep(a,i[255&d],s.TF_SHIFT),l=o.default.advanceSymbolStep(l,i[255&u],s.TF_SHIFT),h=o.default.advanceSymbolStep(h,i[255&f],s.TF_SHIFT),c=o.default.advanceSymbolStep(c,i[255&p],s.TF_SHIFT),a=o.default.renormalize(a,e),l=o.default.renormalize(l,e),h=o.default.renormalize(h,e),c=o.default.renormalize(c,e)}let f;switch(n.setPosition(u),3&d){case 0:break;case 1:f=t.R[o.default.get(a,s.TF_SHIFT)],o.default.advanceSymbol(a,e,i[255&f],s.TF_SHIFT),n.put(f);break;case 2:f=t.R[o.default.get(a,s.TF_SHIFT)],o.default.advanceSymbol(a,e,i[255&f],s.TF_SHIFT),n.put(f),f=t.R[o.default.get(l,s.TF_SHIFT)],o.default.advanceSymbol(l,e,i[255&f],s.TF_SHIFT),n.put(f);break;case 3:f=t.R[o.default.get(a,s.TF_SHIFT)],o.default.advanceSymbol(a,e,i[255&f],s.TF_SHIFT),n.put(f),f=t.R[o.default.get(l,s.TF_SHIFT)],o.default.advanceSymbol(l,e,i[255&f],s.TF_SHIFT),n.put(f),f=t.R[o.default.get(h,s.TF_SHIFT)],o.default.advanceSymbol(h,e,i[255&f],s.TF_SHIFT),n.put(f);break;default:throw new r.CramMalformedError("invalid output size encountered during rANS decoding")}n.setPosition(0)}},7121:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0});const r=i(5702),s=n(i(7634));t.default=function(e,t,i,n){const o=t.remaining();let a=e.getInt(),l=e.getInt(),h=e.getInt(),c=e.getInt();const d=o>>2;let u=0,f=d,p=2*d,g=3*d,m=0,b=0,w=0,v=0;for(;u<d;u+=1,f+=1,p+=1,g+=1){const o=255&i[m].R[s.default.get(a,r.TF_SHIFT)],d=255&i[b].R[s.default.get(l,r.TF_SHIFT)],y=255&i[w].R[s.default.get(h,r.TF_SHIFT)],_=255&i[v].R[s.default.get(c,r.TF_SHIFT)];t.putAt(u,o),t.putAt(f,d),t.putAt(p,y),t.putAt(g,_),a=s.default.advanceSymbolStep(a,n[m][o],r.TF_SHIFT),l=s.default.advanceSymbolStep(l,n[b][d],r.TF_SHIFT),h=s.default.advanceSymbolStep(h,n[w][y],r.TF_SHIFT),c=s.default.advanceSymbolStep(c,n[v][_],r.TF_SHIFT),a=s.default.renormalize(a,e),l=s.default.renormalize(l,e),h=s.default.renormalize(h,e),c=s.default.renormalize(c,e),m=o,b=d,w=y,v=_}for(;g<o;g+=1){const o=255&i[v].R[s.default.get(c,r.TF_SHIFT)];t.putAt(g,o),c=s.default.advanceSymbol(c,e,n[v][o],r.TF_SHIFT),v=o}}},7634:(e,t,i)=>{Object.defineProperty(t,"__esModule",{value:!0});const n=i(8577),r=i(5702);class s{constructor(){this.F=void 0,this.C=void 0}}function o(e,t,i,n){return i*(e>>n)+(e&(1<<n)-1)-t}const a={FC:s,AriDecoder:class{constructor(){this.fc=new Array(256);for(let e=0;e<this.fc.length;e+=1)this.fc[e]=new s;this.R=null}},Symbol:class{constructor(){this.start=void 0,this.freq=void 0}},symbolInit:function(e,t,i){if(!(t<=65536))throw new n.CramMalformedError("assertion failed: start <= 1<<16");if(!(i<=65536-t))throw new n.CramMalformedError("assertion failed: freq <= 1<<16");e.start=t,e.freq=i},advanceStep:o,advanceSymbolStep:function(e,t,i){return o(e,t.start,t.freq,i)},get:function(e,t){return e&(1<<t)-1},advanceSymbol:function(e,t,i,n){return function(e,t,i,n,s){if((e=n*(e>>s)+(e&(1<<s)-1)-i)<r.RANS_BYTE_L)do{e=e<<8|255&t.get()}while(e<r.RANS_BYTE_L);return e}(e,t,i.start,i.freq,n)},renormalize:function(e,t){if(e<r.RANS_BYTE_L)do{e=e<<8|255&t.get()}while(e<r.RANS_BYTE_L);return e}};t.default=a},696:function(e,t,i){var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,"__esModule",{value:!0}),t.readStatsO1=t.readStatsO0=void 0;const r=i(8577),s=i(5702),o=n(i(7634));function a(e){if(!e)throw new 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i="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e},i(e)}var n=function(){this.code="",this.scopes=[["vars"]],this.isAsync=!1,this.bitFields=[],this.tmpVariableCount=0,this.references={}};n.prototype.generateVariable=function(e){var t=[];for(Array.prototype.push.apply(t,this.scopes[this.scopes.length-1]);/^\$parent\./.test(e);)t.pop(),e=e.replace(/^\$parent\./,"");return e&&t.push(e),t.join(".")},n.prototype.generateOption=function(e){switch(i(e)){case"number":return e.toString();case"string":return this.generateVariable(e);case"function":return"(".concat(e,").call(").concat(this.generateVariable(),", vars)");default:return}},n.prototype.generateError=function(){var e=Array.prototype.slice.call(arguments),t=n.interpolate.apply(this,e);this.isAsync?this.pushCode("return process.nextTick(function() { callback(new Error(".concat(t,"), vars); });")):this.pushCode("throw new Error(".concat(t,");"))},n.prototype.generateTmpVariable=function(){return"$tmp".concat(this.tmpVariableCount++)},n.prototype.pushCode=function(){var e=Array.prototype.slice.call(arguments);this.code+="".concat(n.interpolate.apply(this,e),"\n")},n.prototype.pushPath=function(e){e&&this.scopes[this.scopes.length-1].push(e)},n.prototype.popPath=function(e){e&&this.scopes[this.scopes.length-1].pop()},n.prototype.pushScope=function(e){this.scopes.push([e])},n.prototype.popScope=function(){this.scopes.pop()},n.prototype.addReference=function(e){this.references[e]||(this.references[e]={resolved:!1,requested:!1})},n.prototype.markResolved=function(e){this.references[e].resolved=!0},n.prototype.markRequested=function(e){e.forEach(function(e){this.references[e].requested=!0}.bind(this))},n.prototype.getUnresolvedReferences=function(){var e=this.references;return Object.keys(this.references).filter((function(t){return!e[t].resolved&&!e[t].requested}))},n.interpolate=function(e){var t=e.match(/{\d+}/g),i=Array.prototype.slice.call(arguments,1);return t&&t.forEach((function(t){var n=parseInt(t.substr(1,t.length-2),10);e=e.replace(t,i[n].toString())})),e},t._=n},22:e=>{e.exports.runInThisContext=function(e){return new Function("code","return eval(code);").call(globalThis,e)}},445:(e,t,i)=>{const n=i(7381),r=i(9260),s=i(576),o=i(4693),a=128;e.exports=class{decode(e){return this.stream=new r(e),this.decodeStream(this.stream)}decodeStream(e,t=0){var i=this.stream.ReadByte();16&i||(t=this.stream.ReadUint7());var n,r=t,s=1&i;if(8&i)return this.decodeStripe(this.stream,t);if(i&a&&([n,r]=this.decodePackMeta(this.stream)),32&i)var o=this.decodeCat(this.stream,r);else o=4&i?this.decodeExt(this.stream,r):64&i?s?this.decodeRLE1(this.stream,r):this.decodeRLE0(this.stream,r):s?this.decode1(this.stream,r):this.decode0(this.stream,r);return i&a&&(o=this.decodePack(o,n,t)),o}encode(e,t){if(this.stream=new r("",0,1.1*e.length+100),this.stream.WriteByte(t),16&t||this.stream.WriteUint7(e.length),8&t)return Buffer.concat([this.stream.buf.slice(0,this.stream.pos),this.encodeStripe(this.stream,e,t>>8)]);var i,n=1&t,s=e.length;return t&a&&([i,e,s]=this.encodePack(e)),t&a&&this.stream.WriteStream(i),64&t?n?this.encodeRLE1(e,s,this.stream):this.encodeRLE0(e,s,this.stream):n?this.encode1(e,s,this.stream):this.encode0(e,s,this.stream)}decode0(e,t){var i=new Buffer.allocUnsafe(t),r=e.ReadByte();0==r&&(r=256);var o=new s(r),a=new n(e);a.RangeStartDecode(e);for(var l=0;l<t;l++)i[l]=o.ModelDecode(e,a);return i}encode0(e,t,i){for(var r=0,o=0;o<t;o++)r<e[o]&&(r=e[o]);r++;var a=new s(r);i.WriteByte(r);var l=new n(i);for(o=0;o<t;o++)a.ModelEncode(i,l,e[o]);return l.RangeFinishEncode(i),i.buf.slice(0,i.pos)}decode1(e,t){var i=new Buffer.allocUnsafe(t),r=e.ReadByte();0==r&&(r=256);for(var o=new Array(r),a=0;a<r;a++)o[a]=new s(r);var l=new n(e);l.RangeStartDecode(e);var h=0;for(a=0;a<t;a++)i[a]=o[h].ModelDecode(e,l),h=i[a];return i}encode1(e,t,i){for(var r=0,o=0;o<t;o++)r<e[o]&&(r=e[o]);r++;var a=new Array(r);for(o=0;o<r;o++)a[o]=new s(r);i.WriteByte(r);var l=new n(i),h=0;for(o=0;o<t;o++)a[h].ModelEncode(i,l,e[o]),h=e[o];return l.RangeFinishEncode(i),i.buf.slice(0,i.pos)}decodeExt(e,t){var i=new Buffer.allocUnsafe(t),n=o.array(e.buf.slice(e.pos)),r=o.header(n),s=0;do{var a=o.decompress(n,r);-1!=a&&(Buffer.from(a).copy(i,s),s+=a.length,r-=a.length)}while(-1!=a);return i}encodeExt(e,t){}decodeRLE0(e,t){var i=new Buffer.allocUnsafe(t),r=e.ReadByte();0==r&&(r=256);for(var o=new s(r),a=new Array(258),l=0;l<=257;l++)a[l]=new s(4);var h=new n(e);for(h.RangeStartDecode(e),l=0;l<t;){i[l]=o.ModelDecode(e,h);for(var c=a[i[l]].ModelDecode(e,h),d=c,u=256;3==c;)c=a[u].ModelDecode(e,h),u=257,d+=c;for(var f=1;f<=d;f++)i[l+f]=i[l];l+=d+1}return i}encodeRLE0(e,t,i){for(var r=0,o=0;o<t;o++)r<e[o]&&(r=e[o]);r++;var a=new s(r),l=new Array(258);for(o=0;o<=257;o++)l[o]=new s(4);i.WriteByte(r);var h=new n(i);for(o=0;o<t;){a.ModelEncode(i,h,e[o]);for(var c=1;o+c<t&&e[o+c]==e[o];)c++;c--;var d=e[o];e[o],o+=c+1;var u=c>=3?3:c;for(l[d].ModelEncode(i,h,u),c-=u,d=256;3==u;)u=c>=3?3:c,l[d].ModelEncode(i,h,u),d=257,c-=u}return h.RangeFinishEncode(i),i.buf.slice(0,i.pos)}decodeRLE1(e,t){var i=new Buffer.allocUnsafe(t),r=e.ReadByte();0==r&&(r=256);for(var o=new Array(r),a=0;a<r;a++)o[a]=new s(r);var l=new Array(258);for(a=0;a<=257;a++)l[a]=new s(4);var h=new n(e);h.RangeStartDecode(e);var c=0;for(a=0;a<t;){i[a]=o[c].ModelDecode(e,h),c=i[a];for(var d=l[i[a]].ModelDecode(e,h),u=d,f=256;3==d;)d=l[f].ModelDecode(e,h),f=257,u+=d;for(var p=1;p<=u;p++)i[a+p]=i[a];a+=u+1}return i}encodeRLE1(e,t,i){for(var r=0,o=0;o<t;o++)r<e[o]&&(r=e[o]);r++;var a=new Array(r);for(o=0;o<r;o++)a[o]=new s(r);var l=new Array(258);for(o=0;o<=257;o++)l[o]=new s(4);i.WriteByte(r);for(var h=new n(i),c=(o=0,0);o<t;){a[c].ModelEncode(i,h,e[o]);for(var d=1;o+d<t&&e[o+d]==e[o];)d++;d--;var u=e[o];c=e[o],o+=d+1;var f=d>=3?3:d;for(l[u].ModelEncode(i,h,f),d-=f,u=256;3==f;)f=d>=3?3:d,l[u].ModelEncode(i,h,f),u=257,d-=f}return h.RangeFinishEncode(i),i.buf.slice(0,i.pos)}decodePackMeta(e){this.nsym=e.ReadByte();for(var t=new Array(this.nsym),i=0;i<this.nsym;i++)t[i]=e.ReadByte();return[t,e.ReadUint7()]}decodePack(e,t,i){var n=new Buffer.allocUnsafe(i);if(this.nsym<=1)for(var r=0;r<i;r++)n[r]=t[0];else if(this.nsym<=2){r=0;for(var s=0;r<i;r++){if(r%8==0)var o=e[s++];n[r]=t[1&o],o>>=1}}else if(this.nsym<=4)for(r=0,s=0;r<i;r++)r%4==0&&(o=e[s++]),n[r]=t[3&o],o>>=2;else{if(!(this.nsym<=16))return e;for(r=0,s=0;r<i;r++)r%2==0&&(o=e[s++]),n[r]=t[15&o],o>>=4}return n}packMeta(e){for(var t=new r("",0,1024),i=new Array(256),n=0;n<e.length;n++)i[e[n]]=1;var s=0;for(n=0;n<256;n++)i[n]&&(i[n]=++s);for(t.WriteByte(s),n=0;n<256;n++)i[n]&&(t.WriteByte(n),i[n]--);return[t,i,s]}encodePack(e){var t,i,n;[t,i,n]=this.packMeta(e);var r=e.length,s=0;if(n<=1)return t.WriteUint7(0),[t,new Buffer.allocUnsafe(0),0];if(n<=2){for(var o=new Buffer.allocUnsafe(Math.floor((r+7)/8)),a=(s=0,0);s<(-8&r);s+=8,a++)o[a]=(i[e[s+0]]<<0)+(i[e[s+1]]<<1)+(i[e[s+2]]<<2)+(i[e[s+3]]<<3)+(i[e[s+4]]<<4)+(i[e[s+5]]<<5)+(i[e[s+6]]<<6)+(i[e[s+7]]<<7);if(s<r){o[a]=0;for(var l=0;s<r;)o[a]|=i[e[s++]]<<l,l++;a++}return t.WriteUint7(a),[t,o,o.length]}if(n<=4){for(o=new Buffer.allocUnsafe(Math.floor((r+3)/4)),s=0,a=0;s<(-4&r);s+=4,a++)o[a]=(i[e[s+0]]<<0)+(i[e[s+1]]<<2)+(i[e[s+2]]<<4)+(i[e[s+3]]<<6);if(s<r){for(o[a]=0,l=0;s<r;)o[a]|=i[e[s++]]<<l,l+=2;a++}return t.WriteUint7(a),[t,o,o.length]}if(n<=16){for(o=new Buffer.allocUnsafe(Math.floor((r+1)/2)),s=0,a=0;s<(-2&r);s+=2,a++)o[a]=(i[e[s+0]]<<0)+(i[e[s+1]]<<4);return s<r&&(o[a++]=i[e[s++]]),t.WriteUint7(a),[t,o,o.length]}return t.WriteUint7(e.length),[t,e,e.length]}encodeStripe(e,t,i){0==i&&(i=4);for(var n=new Array(i),s=new Array(i),o=0;o<i;o++)s[o]=Math.floor(t.length/i)+(t.length%i>o),n[o]=new Array(s[o]);for(var a=0,l=0;l<t.length;l+=i,a++)for(var h=0;h<i;h++)a<n[h].length&&(n[h][a]=t[l+h]);var c=new Array(i),d=0;for(o=0;o<i;o++){var u=this.encode(n[o],0),f=this.encode(n[o],1);c[o]=f.length<u.length?f:u,d+=c[o].length}var p=new r("",0,d+5*i+1);for(p.WriteByte(i),o=0;o<i;o++)p.WriteUint7(c[o].length);for(o=0;o<i;o++)p.WriteData(c[o],c[o].length);return p.buf.slice(0,p.buf.pos)}decodeStripe(e,t){for(var i=e.ReadByte(),n=new Array(i),r=new Array(i),s=0;s<i;s++)n[s]=e.ReadUint7();var o=new Array(i);for(s=0;s<i;s++)r[s]=Math.floor(t/i)+(t%i>s),o[s]=this.decodeStream(e,r[s]);var a=new Buffer.allocUnsafe(t);for(s=0;s<i;s++)for(var l=0;l<r[s];l++)a[l*i+s]=o[s][l];return a}decodeCat(e,t){for(var i=new Buffer.allocUnsafe(t),n=0;n<t;n++)i[n]=e.ReadByte();return i}}},7381:e=>{e.exports=class{constructor(e){this.low=0,this.range=4294967295,this.code=0,this.FFnum=0,this.carry=0,this.cache=0}RangeStartDecode(e){for(var t=0;t<5;t++)this.code=(this.code<<8)+e.ReadByte();this.code&=4294967295,this.code>>>=0}RangeGetFrequency(e){return this.range=Math.floor(this.range/e),Math.floor(this.code/this.range)}RangeDecode(e,t,i,n){for(this.code-=t*this.range,this.range*=i;this.range<1<<24;)this.range*=256,this.code=256*this.code+e.ReadByte()}RangeShiftLow(e){if(this.low<4278190080|this.carry){for(e.WriteByte(this.cache+this.carry);this.FFnum;)e.WriteByte(this.carry-1),this.FFnum--;this.cache=this.low>>>24,this.carry=0}else this.FFnum++;this.low<<=8,this.low>>>=0}RangeEncode(e,t,i,n){var r=this.low;for(this.range=Math.floor(this.range/n),this.low+=t*this.range,this.low>>>=0,this.range*=i,this.low<r&&(0!=this.carry&&console.log("ERROR: Multiple carry"),this.carry=1);this.range<1<<24;)this.range*=256,this.RangeShiftLow(e)}RangeFinishEncode(e){for(var t=0;t<5;t++)this.RangeShiftLow(e)}}},576:e=>{e.exports=class{constructor(e=256){this.total_freq=e,this.max_sym=e-1,this.S=new Array,this.F=new Array;for(var t=0;t<=this.max_sym;t++)this.S[t]=t,this.F[t]=1}ModelDecode(e,t){for(var i=t.RangeGetFrequency(this.total_freq),n=0,r=0;n+this.F[r]<=i;)n+=this.F[r++];t.RangeDecode(e,n,this.F[r],this.total_freq),this.F[r]+=16,this.total_freq+=16,this.total_freq>65519&&this.ModelRenormalise();var s=this.S[r];if(r>0&&this.F[r]>this.F[r-1]){var o=this.F[r];this.F[r]=this.F[r-1],this.F[r-1]=o,o=this.S[r],this.S[r]=this.S[r-1],this.S[r-1]=o}return s}ModelRenormalise(){this.total_freq=0;for(var e=0;e<=this.max_sym;e++)this.F[e]-=Math.floor(this.F[e]/2),this.total_freq+=this.F[e]}ModelEncode(e,t,i){for(var n=0,r=0;this.S[r]!=i;r++)n+=this.F[r];if(t.RangeEncode(e,n,this.F[r],this.total_freq),this.F[r]+=16,this.total_freq+=16,this.total_freq>65519&&this.ModelRenormalise(),i=this.S[r],r>0&&this.F[r]>this.F[r-1]){var s=this.F[r];this.F[r]=this.F[r-1],this.F[r-1]=s,s=this.S[r],this.S[r]=this.S[r-1],this.S[r-1]=s}}}},5260:(e,t,i)=>{const n=i(9260),r=i(576),s=i(7381);function o(e,t,i){for(var n=0,r=0,s=-1,o=new Array(1024);r<i;){var a=e.ReadByte();if(o[n++]=a,r+=a,a==s){var l=e.ReadByte();for(r+=a*l;l--;)o[n++]=a}s=a}var h=0;for(n=0,r=0;r<i;){var c=0;do{var d=o[n++];c+=d}while(255==d);for(;c--;)t[r++]=h;h++}}function a(e,t,i){var n=e.context;return t.qctx=(t.qctx<<e.qshift)+e.qtab[i],n+=(t.qctx&(1<<e.qbits)-1)<<e.qloc,e.do_pos&&(n+=e.ptab[Math.min(t.p,1023)]<<e.ploc),e.do_delta&&(n+=e.dtab[Math.min(t.delta,255)]<<e.dloc,t.delta+=t.prevq!=i?1:0,t.prevq=i),e.do_sel&&(n+=t.s<<e.sloc),t.p--,65535&n}function l(e){var t={};t.context=e.ReadUint16(),t.pflags=e.ReadByte(),t.do_dedup=2&t.pflags,t.fixed_len=4&t.pflags,t.do_sel=8&t.pflags,t.do_qmap=16&t.pflags,t.do_pos=32&t.pflags,t.do_delta=64&t.pflags,t.do_qtab=128&t.pflags,t.max_sym=e.ReadByte();var i=e.ReadByte();if(t.qbits=i>>4,t.qshift=15&i,i=e.ReadByte(),t.qloc=i>>4,t.sloc=15&i,i=e.ReadByte(),t.ploc=i>>4,t.dloc=15&i,t.qmap=new Array(256),16&t.pflags)for(var n=0;n<t.max_sym;n++)t.qmap[n]=e.ReadByte();else for(n=0;n<256;n++)t.qmap[n]=n;if(t.qtab=new Array(1024),t.qbits>0&&128&t.pflags)o(e,t.qtab,256);else for(n=0;n<256;n++)t.qtab[n]=n;return t.ptab=new Array(1024),32&t.pflags&&o(e,t.ptab,1024),t.dtab=new Array(256),64&t.pflags&&o(e,t.dtab,256),t}function h(e,t,i,n,r,s){i.max_sel>0?r.s=n.sel.ModelDecode(e,t):r.s=0,r.x=i.stab[r.s];var o=i.params[r.x];if(o.fixed_len>=0){var a=n.len[0].ModelDecode(e,t);a|=n.len[1].ModelDecode(e,t)<<8,a|=n.len[2].ModelDecode(e,t)<<16,a|=n.len[3].ModelDecode(e,t)<<24,o.fixed_len>0&&(o.fixed_len=-a)}else a=-o.fixed_len;r.len=a,i.do_rev&&(s[r.rec]=n.rev.ModelDecode(e,t)),r.is_dup=0,2&o.pflags&&n.dup.ModelDecode(e,t)&&(r.is_dup=1),r.p=a,r.delta=0,r.qctx=0,r.prevq=0,r.rec++}function c(e,t,i){for(var n=0,r=0,s=new Array(2*i),o=0;n<i;){for(var a=n;n<i&&t[n]==r;)n++;var l=n-a;do{var h=Math.min(255,l);s[o++]=h,l-=h}while(255==h);r++}var c=-1,d=new Array(2*i),u=0;for(n=0;n<o;){var f=s[n++];if(d[u++]=f,f==c){for(a=n;n<o&&s[n]==c&&n-a<255;)n++;d[u++]=n-a}else c=f}e.WriteData(d,u)}e.exports={decode:function(e,t){return function(e,t){var i=e.ReadUint7(),n=function(e){var t={max_sym:0};if(5==e.ReadByte()){var i=e.ReadByte(),n=1&i?e.ReadByte():1,r=i.nparam>1?i.nparam-1:0,s=new Array(256);if(2&i)r=e.ReadByte(),o(e,s,256);else{for(var a=0;a<n;a++)s[a]=a;for(;a<256;a++)s[a]=n-1}t.do_rev=4&i,t.stab=s,t.max_sel=r,t.params=new Array(t.nparam);for(var h=0;h<n;h++)t.params[h]=l(e),t.max_sym<t.params[h].max_sym&&(t.max_sym=t.params[h].max_sym);return t}console.error("Invalid FQZComp version number")}(e);if(n){var c=n.params,d=new Array(t.length),u=function(e){var t={};t.qual=new Array(65536);for(var i=0;i<65536;i++)t.qual[i]=new r(e.max_sym+1);for(t.len=new Array(4),i=0;i<4;i++)t.len[i]=new r(256);return t.rev=new r(2),t.dup=new r(2),e.max_sel>0&&(t.sel=new r(e.max_sel+1)),t}(n),f=new s(e);f.RangeStartDecode(e);for(var p=new Buffer.allocUnsafe(i),g={qctx:0,prevq:0,delta:0,p:0,s:0,x:0,len:0,is_dup:0,rec:0},m=0;m<i;){if(0==g.p){if(h(e,f,n,u,g,d),g.is_dup>0&&u.dup.ModelDecode(e,f)){for(var b=0;b<len;b++)p[m+b]=p[m+b-g.len];m+=g.len,g.p=0;continue}t.push(g.len);var w=(c=n.params[g.x]).context}var v=u.qual[w].ModelDecode(e,f);p[m++]=c.qmap[v],w=a(c,g,v)}return n.do_rev&&function(e,t,i,n){for(var r=0,s=0;s<t;){if(i[r])for(var o=0,a=n[r]-1;o<a;){var l=e[s+o];e[s+o]=e[s+a],e[s+a]=l,o++,a--}s+=n[r++]}}(p,i,d,t),p}}(new n(e),t)},encode:function(e,t,i){for(var o=new Array(2),a=new Array(2),l=new Array(2),h=new Array(2),d=new Array(256),u=0;u<2;u++)o[u]=new Array(256),a[u]=new Array(256),l[u]=new Array(1024),h[u]=new Array(256);(p=new n("",0,1.1*e.length+100)).WriteUint7(e.length);var f=function(e,t,i,n){for(var r=i[0],s=0;s<i.length&&i[s]==r;s++);var o=s==i.length?1:0,a=0,l=0;for(s=0;s<256;s++)n[0][s]=0;var h=0,c=0;for(s=0;s<e.length;s++)0==c&&(c=t[h<t.length-1?h++:h]),n[0][e[s]]++,c--;for(s=0;s<256;s++)n[0][s]&&(l<s&&(l=s),a++);var d=5,u=0;return a<=16&&(u=1,d=a<=2?1:a<=4?2:a<=8?3:4),[{qbits:8+(d>4),qshift:d,qloc:7,pbits:7,pshift:t[0]>128?1:0,ploc:0,dbits:d>4?0:1,dshift:3,dloc:15,sbits:0,sloc:15,do_stab:0,context:0,max_sym:l,nsym:a,do_qmap:u,do_dedup:0,fixed_len:1==t.length?1:0,do_sel:0,do_rev:0,do_pos:1,do_delta:d<=4?1:0,do_qtab:0,qbits:8+(d>4)-(0==o),sbits:1,sloc:15-(d<=4),do_stab:1,do_sel:1}]}(e,t,i,o),p=function(e,t,i,n,r,s,o){for(var a=[0,1,1,1,2,2,2,2,2,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7],l=0;l<t.length;l++)o[l]=l;for(;l<256;l++)o[l]=t.length-1;e.WriteByte(5);var h=(t.length>1?1:0)|(t[0].do_stab?2:0);if(e.WriteByte(h),1&h&&e.WriteByte(t.length),2&h){var d=1<<t[0].sbits;d>0&&d--,e.WriteByte(d),c(e,o,256)}for(var u=0;u<t.length;u++){if(e.WriteUint16(t[u].context),e.WriteByte((t[u].do_qtab?128:0)|(t[u].do_delta?64:0)|(t[u].do_pos?32:0)|(t[u].do_qmap?16:0)|(t[u].do_sel?8:0)|(t[u].fixed_len?4:0)|(t[u].do_dedup?2:0)),t[u].do_qmap?e.WriteByte(t[u].nsym):e.WriteByte(t[u].max_sym),e.WriteByte(t[u].qbits<<4|t[u].qshift),e.WriteByte(t[u].qloc<<4|t[u].sloc),e.WriteByte(t[u].ploc<<4|t[u].dloc),t[u].do_qmap){t[u].max_sym=t[u].nsym;var f=0;for(l=0;l<256;l++)i[u][l]&&(e.WriteByte(l),i[u][l]=f++);for(;f<t[u].nsym;f++)e.WriteByte(0)}else for(l=0;l<256;l++)i[u][l]=l;if(t[u].qbits>0){for(l=0;l<256;l++)n[u][l]=l;t[u].do_qtab&&c(e,n[u],256)}if(t[u].pbits>0){for(l=0;l<1024;l++)r[u][l]=Math.min((1<<t[u].pbits)-1,l>>t[u].pshift);c(e,r[u],1024)}if(t[u].dbits>0){for(l=0;l<256;l++)a[l]>(1<<t[u].dbits)-1&&(a[l]=(1<<t[u].dbits)-1);for(l=0;l<256;l++)s[u][l]=a[Math.min(a.length-1,l>>t[u].dshift)];c(e,s[u],256)}}return e}(p,f,o,a,l,h,d);return function(e,t,i,n,o,a,l,h,c,d){var u=1<<o[0].sbits;u>0&&u--;for(var f=t.length,p=0,g=0;g<o.length;g++)p<o[g].max_sym&&(p=o[g].max_sym);for(var m=new Array(65536),b=0;b<65536;b++)m[b]=new r(p+1);var w=new Array(4);for(b=0;b<4;b++)w[b]=new r(256);new r(2),new r(2);for(var v=new r(u+1),y=new s(t),_=(g=0,b=0,0);b<f;){if(0==g){var x=n[_];o[0].sbits>0&&v.ModelEncode(e,y,x);var k=d[x],C=i[Math.min(i.length-1,_++)];o[k].fixed_len?o[k].fixed_len>0&&(w[0].ModelEncode(e,y,255&C),w[1].ModelEncode(e,y,C>>8&255),w[2].ModelEncode(e,y,C>>16&255),w[3].ModelEncode(e,y,C>>24&255),o[k].fixed_len=-1):(w[0].ModelEncode(e,y,255&C),w[1].ModelEncode(e,y,C>>8&255),w[2].ModelEncode(e,y,C>>16&255),w[3].ModelEncode(e,y,C>>24&255)),o[k].do_dedup&&process.exit(1),g=C;var S=0,A=o[k].context,E=0,T=0}var M=t[b++],R=a[k][M];m[A].ModelEncode(e,y,R),E=(E<<o[k].qshift)+l[k][R],A=o[k].context,A+=(E&(1<<o[k].qbits)-1)<<o[k].qloc,o[k].pbits>0&&(A+=h[k][Math.min(g,1023)]<<o[k].ploc),o[k].dbits>0&&(A+=c[k][Math.min(S,255)]<<o[k].dloc,S+=T!=R?1:0,T=R),o[k].do_sel&&(A+=x<<o[k].sloc),A&=65535,g--}return y.RangeFinishEncode(e),e.buf.slice(0,e.pos)}(p,e,t,i,f,o,a,l,h,d)}}},3498:(e,t,i)=>{var n=i(4459),r=i(594),s=i(445),o=i(5260),a=i(2881);e.exports={r4x8_uncompress:function(e,t){n.decode(e).copy(t,0,0)},r4x16_uncompress:function(e,t){r.decode(e).copy(t,0,0)},arith_uncompress:function(e,t){s.decode(e).copy(t,0,0)},fqzcomp_uncompress:function(e,t){var i=new Array;o.decode(e,i).copy(t,0,0)},tok3_uncompress:function(e,t){var i=a.decode(e,0,"\0");Buffer.from(i,"binary").copy(t,0,0)}}},9260:e=>{e.exports=class{constructor(e,t=0,i=0){0!=i?(this.buf=Buffer.allocUnsafe(i),this.length=i):(this.buf=e,this.length=e.length),this.pos=t}EOF(){return this.pos>=this.length}ReadData(e){var t=this.buf.slice(this.pos,this.pos+e);return this.pos+=e,t}ReadByte(){const e=this.buf[this.pos];return this.pos++,e}ReadChar(){const e=this.buf[this.pos];return this.pos++,String.fromCharCode(e)}ReadUint16(){return this.ReadByte()|this.ReadByte()<<8}ReadUint32(){const e=this.buf.readInt32LE(this.pos);return this.pos+=4,e}ReadString(){var e="";do{var t=this.buf[this.pos++];t&&(e+=String.fromCharCode(t))}while(t);return e}ReadUint7(){var e=0;do{var t=this.ReadByte();e=e<<7|127&t}while(128&t);return e}ReadITF8(){var e=this.buf[this.pos];return this.pos++,e>=240?(e=(15&e)<<28,e+=(this.buf[this.pos+0]<<20)+(this.buf[this.pos+1]<<12)+(this.buf[this.pos+2]<<4)+(this.buf[this.pos+3]>>4),this.pos+=4):e>=224?(e=(15&e)<<24,e+=(this.buf[this.pos+0]<<16)+(this.buf[this.pos+1]<<8)+(this.buf[this.pos+2]<<0),this.pos+=3):e>=192?(e=(31&e)<<16,e+=(this.buf[this.pos+0]<<8)+(this.buf[this.pos+1]<<0),this.pos+=2):e>=128&&(e=(63&e)<<8,e+=this.buf[this.pos],this.pos++),e}WriteByte(e){this.buf[this.pos++]=e}WriteChar(e){this.buf[this.pos++]=e.charCodeAt(0)}WriteString(e){for(var t=0;t<e.length;t++)this.buf[this.pos++]=e.charCodeAt(t);this.buf[this.pos++]=0}WriteData(e,t){for(var i=0;i<t;i++)this.buf[this.pos++]=e[i]}WriteStream(e){this.WriteData(e.buf,e.pos)}WriteUint16(e){this.WriteByte(255&e),this.WriteByte(e>>8&255)}WriteUint32(e){this.buf.writeInt32LE(e,this.pos),this.pos+=4}WriteUint7(e){var t=0,i=e;do{t+=7,i>>=7}while(i>0);do{t-=7,this.WriteByte((e>>t&127)+((t>0)<<7))}while(t>0)}WriteITF8(e){e<0&&(e=1+e),e<=127?this.buf[this.pos++]=e:e<=16383?(this.buf[this.pos++]=128|Math.floor(e/256),this.buf[this.pos++]=255&e):e<131071?(this.buf[this.pos++]=192|Math.floor(e/65536),this.buf[this.pos++]=255&Math.floor(e/256),this.buf[this.pos++]=255&e):e<268435455?(this.buf[this.pos++]=224|Math.floor(e/16777216),this.buf[this.pos++]=255&Math.floor(e/65536),this.buf[this.pos++]=255&Math.floor(e/256),this.buf[this.pos++]=255&e):(this.buf[this.pos++]=240|Math.floor(e/268435456),this.buf[this.pos++]=255&Math.floor(e/1048576),this.buf[this.pos++]=255&Math.floor(e/4096),this.buf[this.pos++]=255&Math.floor(e/4),this.buf[this.pos++]=15&e)}WriteByteNeg(e){this.buf[--this.pos]=e}}},4459:(e,t,i)=>{const n=i(9260);function r(e){return 4095&e}function s(e,t){for(var i=0;t>=e[i+1];)i++;return i}function o(e){for(var t=new Array(4096),i=0,n=0;n<4096;n++){for(;n>=e[i+1];)i++;t[n]=i}return t}function a(e,t,i){return i*(e>>12)+(4095&e)-t}function l(e,t){for(;t<1<<23;)t=(t<<8)+e.ReadByte();return t}function h(e,t){t.WriteByteNeg(e>>24&255),t.WriteByteNeg(e>>16&255),t.WriteByteNeg(e>>8&255),t.WriteByteNeg(e>>0&255)}function c(e,t,i,n,r){return e=function(e,t,i,n){for(var r=(1<<23>>n<<8)*i;e>=r;)t.WriteByteNeg(255&e),e>>=8;return e}(e,t,n,r),(Math.floor(e/n)<<r)+e%n+i}function d(e,t,i){for(var n=0;n<256;n++)t[n]=0;var r=e.ReadByte(),s=r,o=0;do{var a=e.ReadITF8();t[r]=a,o>0?(o--,r++):(r=e.ReadByte())==s+1&&(o=e.ReadByte()),s=r}while(0!=r);for(i[0]=0,n=0;n<=255;n++)i[n+1]=i[n]+t[n]}function u(e){for(var t=0,i=0;i<256;i++)t+=e[i];const n=4096;var r=n/t;do{var s=0,o=0,a=0;for(t=0,i=0;i<256;i++)0!=e[i]&&(s<e[i]&&(s=e[i],o=i),e[i]=Math.floor(e[i]*r),0==e[i]&&(e[i]=1),t+=e[i]);t<n?e[o]+=n-t:t-n<e[o]/2&&e[o]>2?e[o]-=t-n:t!=n&&(r*=.99,a=1)}while(a)}function f(e,t){for(var i=0,n=0;n<256;n++)if(t[n]){if(i>0)i--;else if(e.WriteByte(n),n>0&&t[n-1]>0){for(i=n+1;i<256&&t[i];i++);i-=n+1,e.WriteByte(i)}e.WriteITF8(t[n])}e.WriteByte(0)}e.exports={decode:function(e){var t=new n(e),i=t.ReadByte(),h=(t.ReadUint32(),t.ReadUint32());return 0==i?function(e,t){var i=new Array(256),n=new Array(256);d(e,i,n);for(var s=o(n),h=new Array(4),c=0;c<4;c++)h[c]=e.ReadUint32();var u=new Buffer.allocUnsafe(t);for(c=0;c<t;c++){var f=c%4,p=s[r(h[f])];u[c]=p,h[f]=a(h[f],n[p],i[p]),h[f]=l(e,h[f])}return u}(t,h):function(e,t){var i=new Array(256),n=new Array(256);!function(e,t,i){for(var n=0;n<256;n++){t[n]=new Array(256),i[n]=new Array(256);for(var r=0;r<256;r++)t[n][r]=0}var s=e.ReadByte(),o=s,a=0;do{d(e,t[s],i[s]),a>0?(a--,s++):(s=e.ReadByte())==o+1&&(a=e.ReadByte()),o=s}while(0!=s)}(e,i,n);for(var h=new Array(256),c=0;c<256;c++)h[c]=o(n[c]);for(var u=new Array(4),f=new Array(4),p=0;p<4;p++)u[p]=e.ReadUint32(),f[p]=0;var g=new Buffer.allocUnsafe(t),m=Math.floor(t/4);for(c=0;c<m;c++)for(p=0;p<4;p++){var b=r(u[p]),w=h[f[p]][b];g[c+p*m]=w,u[p]=a(u[p],n[f[p]][w],i[f[p]][w]),u[p]=l(e,u[p]),f[p]=w}for(c*=4;c<t;)b=r(u[3]),w=s(n[f[3]],b),g[c++]=w,u[3]=a(u[3],n[f[3]][w],i[f[3]][w]),u[3]=l(e,u[3]),f[3]=w;return g}(t,h)},encode:function(e,t){return 0==t?function(e){const t=e.length;var i=new n("",0,780);i.WriteByte(0),i.WriteUint32(0),i.WriteUint32(0);var r=new Array(256);(function(e,t){for(var i=0;i<256;i++)t[i]=0;for(i=0;i<e.length;i++)t[e[i]]++})(e,r),u(r),f(i,r);var s=new Array(256);s[0]=0;for(var o=1;o<256;o++)s[o]=s[o-1]+r[o-1];var a=new Array(4);for(o=0;o<4;o++)a[o]=1<<23;var l=Math.floor(1.05*t+100),d=new n("",l,l);for(o=t-1;o>=0;o--)a[o%4]=c(a[o%4],d,s[e[o]],r[e[o]],12);for(o=3;o>=0;o--)h(a[o],d);var p=i.pos;return i.buf.writeInt32LE(p-9+(d.length-d.pos),1),i.buf.writeInt32LE(t,5),Buffer.concat([i.buf.slice(0,i.pos),d.buf.slice(d.pos,d.length)],i.pos+d.length-d.pos)}(e):function(e){const t=e.length;var i=new n("",0,198156);i.WriteByte(1),i.WriteUint32(0),i.WriteUint32(0);for(var r=new Array(256),s=new Array(256),o=new Array(256),a=0;a<256;a++)s[a]=new Array(256),o[a]=new Array(256);for(function(e,t,i){for(var n=0;n<256;n++){i[n]=0;for(var r=0;r<256;r++)t[n][r]=0}var s=0;for(n=0;n<e.length;n++)i[e[n]]++,t[s][e[n]]++,s=e[n];t[0][e[1*(e.length>>2)]]++,t[0][e[2*(e.length>>2)]]++,t[0][e[3*(e.length>>2)]]++,i[0]+=3}(e,s,r),function(e,t){for(var i=0;i<256;i++)t[i]&&u(e[i])}(s,r),function(e,t,i){for(var n=0,r=0;r<256;r++)if(i[r]){if(n>0)n--;else if(e.WriteByte(r),r>0&&i[r-1]>0){for(n=r+1;n<256&&i[n];n++);n-=r+1,e.WriteByte(n)}f(e,t[r])}e.WriteByte(0)}(i,s,r),a=0;a<256;a++)if(r[a]){o[a][0]=0;for(var l=1;l<256;l++)o[a][l]=o[a][l-1]+s[a][l-1]}var d=new Array(4),p=new Array(4);for(l=0;l<4;l++)d[l]=1<<23,p[l]=0;var g=new n("",t,t),m=Math.floor(t/4),b=new Array(4),w=new Array(4);for(l=0;l<4;l++)b[l]=(l+1)*m-2,w[l]=e[b[l]+1];for(w[3]=e[t-1],a=t-2;a>4*m-2;a--)d[3]=c(d[3],g,o[e[a]][w[3]],s[e[a]][w[3]],12),w[3]=e[a];for(;b[0]>=0;)for(l=3;l>=0;l--){var v=e[b[l]];d[l]=c(d[l],g,o[v][w[l]],s[v][w[l]],12),w[l]=v,b[l]--}for(l=3;l>=0;l--)d[l]=c(d[l],g,o[0][w[l]],s[0][w[l]],12);for(a=3;a>=0;a--)h(d[a],g);var y=i.pos;return i.buf.writeInt32LE(y-9+(g.length-g.pos),1),i.buf.writeInt32LE(t,5),Buffer.concat([i.buf.slice(0,i.pos),g.buf.slice(g.pos,g.length)],i.pos+g.length-g.pos)}(e)}}},594:(e,t,i)=>{const n=i(9260);function r(e,t){return e&(1<<t)-1}function s(e,t){for(var i=0;t>=e[i+1];)i++;return i}function o(e,t){for(var i=1<<t,n=new Array(i),r=0,s=0;s<i;s++){for(;s>=e[r+1];)r++;n[s]=r}return n}function a(e,t,i,n){return i*(e>>n)+(e&(1<<n)-1)-t}function l(e,t){return t<32768&&(t=(t<<16)+e.ReadUint16()),t}function h(e,t){t.WriteByteNeg(e>>24&255),t.WriteByteNeg(e>>16&255),t.WriteByteNeg(e>>8&255),t.WriteByteNeg(e>>0&255)}function c(e,t,i,n,r){return e=function(e,t,i,n){for(var r=(1<<31-n)*i;e>=r;)t.WriteByteNeg(e>>8&255),t.WriteByteNeg(255&e),e>>=16;return e}(e,t,n,r),(Math.floor(e/n)<<r)+e%n+i}function d(e,t,i){0==i&&(i=4);for(var r=new 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l=Math.min(8,e.length-o),d=parseInt(e.substring(o,o+l),i);if(l<8){var u=a(h(i,l));s=s.mul(u).add(a(d))}else s=(s=s.mul(r)).add(a(d))}return s.unsigned=t,s}function d(e,t){return"number"==typeof e?a(e,t):"string"==typeof e?c(e,t):l(e.low,e.high,"boolean"==typeof t?t:e.unsigned)}i.fromString=c,i.fromValue=d;var u=4294967296,f=u*u,p=f/2,g=o(1<<24),m=o(0);i.ZERO=m;var b=o(0,!0);i.UZERO=b;var w=o(1);i.ONE=w;var v=o(1,!0);i.UONE=v;var y=o(-1);i.NEG_ONE=y;var _=l(-1,2147483647,!1);i.MAX_VALUE=_;var x=l(-1,-1,!0);i.MAX_UNSIGNED_VALUE=x;var k=l(0,-2147483648,!1);i.MIN_VALUE=k;var C=i.prototype;C.toInt=function(){return this.unsigned?this.low>>>0:this.low},C.toNumber=function(){return this.unsigned?(this.high>>>0)*u+(this.low>>>0):this.high*u+(this.low>>>0)},C.toString=function(e){if((e=e||10)<2||36<e)throw RangeError("radix");if(this.isZero())return"0";if(this.isNegative()){if(this.eq(k)){var t=a(e),i=this.div(t),n=i.mul(t).sub(this);return 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n(e)||(e=d(e)),(this.unsigned===e.unsigned||this.high>>>31!=1||e.high>>>31!=1)&&this.high===e.high&&this.low===e.low},C.eq=C.equals,C.notEquals=function(e){return!this.eq(e)},C.neq=C.notEquals,C.ne=C.notEquals,C.lessThan=function(e){return this.comp(e)<0},C.lt=C.lessThan,C.lessThanOrEqual=function(e){return this.comp(e)<=0},C.lte=C.lessThanOrEqual,C.le=C.lessThanOrEqual,C.greaterThan=function(e){return this.comp(e)>0},C.gt=C.greaterThan,C.greaterThanOrEqual=function(e){return this.comp(e)>=0},C.gte=C.greaterThanOrEqual,C.ge=C.greaterThanOrEqual,C.compare=function(e){if(n(e)||(e=d(e)),this.eq(e))return 0;var t=this.isNegative(),i=e.isNegative();return t&&!i?-1:!t&&i?1:this.unsigned?e.high>>>0>this.high>>>0||e.high===this.high&&e.low>>>0>this.low>>>0?-1:1:this.sub(e).isNegative()?-1:1},C.comp=C.compare,C.negate=function(){return!this.unsigned&&this.eq(k)?k:this.not().add(w)},C.neg=C.negate,C.add=function(e){n(e)||(e=d(e));var t=this.high>>>16,i=65535&this.high,r=this.low>>>16,s=65535&this.low,o=e.high>>>16,a=65535&e.high,h=e.low>>>16,c=0,u=0,f=0,p=0;return f+=(p+=s+(65535&e.low))>>>16,u+=(f+=r+h)>>>16,c+=(u+=i+a)>>>16,c+=t+o,l((f&=65535)<<16|(p&=65535),(c&=65535)<<16|(u&=65535),this.unsigned)},C.subtract=function(e){return n(e)||(e=d(e)),this.add(e.neg())},C.sub=C.subtract,C.multiply=function(e){if(this.isZero())return m;if(n(e)||(e=d(e)),t)return l(t.mul(this.low,this.high,e.low,e.high),t.get_high(),this.unsigned);if(e.isZero())return m;if(this.eq(k))return e.isOdd()?k:m;if(e.eq(k))return this.isOdd()?k:m;if(this.isNegative())return e.isNegative()?this.neg().mul(e.neg()):this.neg().mul(e).neg();if(e.isNegative())return this.mul(e.neg()).neg();if(this.lt(g)&&e.lt(g))return a(this.toNumber()*e.toNumber(),this.unsigned);var i=this.high>>>16,r=65535&this.high,s=this.low>>>16,o=65535&this.low,h=e.high>>>16,c=65535&e.high,u=e.low>>>16,f=65535&e.low,p=0,b=0,w=0,v=0;return w+=(v+=o*f)>>>16,b+=(w+=s*f)>>>16,w&=65535,b+=(w+=o*u)>>>16,p+=(b+=r*f)>>>16,b&=65535,p+=(b+=s*u)>>>16,b&=65535,p+=(b+=o*c)>>>16,p+=i*f+r*u+s*c+o*h,l((w&=65535)<<16|(v&=65535),(p&=65535)<<16|(b&=65535),this.unsigned)},C.mul=C.multiply,C.divide=function(e){if(n(e)||(e=d(e)),e.isZero())throw Error("division by zero");var i,r,s;if(t)return this.unsigned||-2147483648!==this.high||-1!==e.low||-1!==e.high?l((this.unsigned?t.div_u:t.div_s)(this.low,this.high,e.low,e.high),t.get_high(),this.unsigned):this;if(this.isZero())return this.unsigned?b:m;if(this.unsigned){if(e.unsigned||(e=e.toUnsigned()),e.gt(this))return b;if(e.gt(this.shru(1)))return v;s=b}else{if(this.eq(k))return e.eq(w)||e.eq(y)?k:e.eq(k)?w:(i=this.shr(1).div(e).shl(1)).eq(m)?e.isNegative()?w:y:(r=this.sub(e.mul(i)),s=i.add(r.div(e)));if(e.eq(k))return this.unsigned?b:m;if(this.isNegative())return e.isNegative()?this.neg().div(e.neg()):this.neg().div(e).neg();if(e.isNegative())return 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n(e)&&(e=e.toInt()),0==(e&=63)?this:e<32?l(this.low<<e,this.high<<e|this.low>>>32-e,this.unsigned):l(0,this.low<<e-32,this.unsigned)},C.shl=C.shiftLeft,C.shiftRight=function(e){return n(e)&&(e=e.toInt()),0==(e&=63)?this:e<32?l(this.low>>>e|this.high<<32-e,this.high>>e,this.unsigned):l(this.high>>e-32,this.high>=0?0:-1,this.unsigned)},C.shr=C.shiftRight,C.shiftRightUnsigned=function(e){if(n(e)&&(e=e.toInt()),0==(e&=63))return this;var t=this.high;return e<32?l(this.low>>>e|t<<32-e,t>>>e,this.unsigned):l(32===e?t:t>>>e-32,0,this.unsigned)},C.shru=C.shiftRightUnsigned,C.shr_u=C.shiftRightUnsigned,C.toSigned=function(){return this.unsigned?l(this.low,this.high,!1):this},C.toUnsigned=function(){return this.unsigned?this:l(this.low,this.high,!0)},C.toBytes=function(e){return e?this.toBytesLE():this.toBytesBE()},C.toBytesLE=function(){var e=this.high,t=this.low;return[255&t,t>>>8&255,t>>>16&255,t>>>24,255&e,e>>>8&255,e>>>16&255,e>>>24]},C.toBytesBE=function(){var 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r.Buf16(573),b(this.depth),this.l_buf=0,this.lit_bufsize=0,this.last_lit=0,this.d_buf=0,this.opt_len=0,this.static_len=0,this.matches=0,this.insert=0,this.bi_buf=0,this.bi_valid=0}function M(e){var t;return e&&e.state?(e.total_in=e.total_out=0,e.data_type=2,(t=e.state).pending=0,t.pending_out=0,t.wrap<0&&(t.wrap=-t.wrap),t.status=t.wrap?42:f,e.adler=2===t.wrap?0:1,t.last_flush=0,s._tr_init(t),0):g(e,h)}function R(e){var t,i=M(e);return 0===i&&((t=e.state).window_size=2*t.w_size,b(t.head),t.max_lazy_match=n[t.level].max_lazy,t.good_match=n[t.level].good_length,t.nice_match=n[t.level].nice_length,t.max_chain_length=n[t.level].max_chain,t.strstart=0,t.block_start=0,t.lookahead=0,t.insert=0,t.match_length=t.prev_length=2,t.match_available=0,t.ins_h=0),i}function L(e,t,i,n,s,o){if(!e)return h;var a=1;if(-1===t&&(t=6),n<0?(a=0,n=-n):n>15&&(a=2,n-=16),s<1||s>9||8!==i||n<8||n>15||t<0||t>9||o<0||o>4)return g(e,h);8===n&&(n=9);var l=new T;return e.state=l,l.strm=e,l.wrap=a,l.gzhead=null,l.w_bits=n,l.w_size=1<<l.w_bits,l.w_mask=l.w_size-1,l.hash_bits=s+7,l.hash_size=1<<l.hash_bits,l.hash_mask=l.hash_size-1,l.hash_shift=~~((l.hash_bits+3-1)/3),l.window=new r.Buf8(2*l.w_size),l.head=new r.Buf16(l.hash_size),l.prev=new r.Buf16(l.w_size),l.lit_bufsize=1<<s+6,l.pending_buf_size=4*l.lit_bufsize,l.pending_buf=new r.Buf8(l.pending_buf_size),l.d_buf=1*l.lit_bufsize,l.l_buf=3*l.lit_bufsize,l.level=t,l.strategy=o,l.method=i,R(e)}n=[new E(0,0,0,0,(function(e,t){var i=65535;for(i>e.pending_buf_size-5&&(i=e.pending_buf_size-5);;){if(e.lookahead<=1){if(C(e),0===e.lookahead&&0===t)return 1;if(0===e.lookahead)break}e.strstart+=e.lookahead,e.lookahead=0;var n=e.block_start+i;if((0===e.strstart||e.strstart>=n)&&(e.lookahead=e.strstart-n,e.strstart=n,v(e,!1),0===e.strm.avail_out))return 1;if(e.strstart-e.block_start>=e.w_size-d&&(v(e,!1),0===e.strm.avail_out))return 1}return e.insert=0,4===t?(v(e,!0),0===e.strm.avail_out?3:4):(e.strstart>e.block_start&&(v(e,!1),e.strm.avail_out),1)})),new E(4,4,8,4,S),new E(4,5,16,8,S),new E(4,6,32,32,S),new E(4,4,16,16,A),new E(8,16,32,32,A),new E(8,16,128,128,A),new E(8,32,128,256,A),new E(32,128,258,1024,A),new E(32,258,258,4096,A)],t.deflateInit=function(e,t){return L(e,t,8,15,8,0)},t.deflateInit2=L,t.deflateReset=R,t.deflateResetKeep=M,t.deflateSetHeader=function(e,t){return e&&e.state?2!==e.state.wrap?h:(e.state.gzhead=t,0):h},t.deflate=function(e,t){var i,r,o,l;if(!e||!e.state||t>5||t<0)return e?g(e,h):h;if(r=e.state,!e.output||!e.input&&0!==e.avail_in||r.status===p&&4!==t)return 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d=8+(r.w_bits-8<<4)<<8;d|=(r.strategy>=2||r.level<2?0:r.level<6?1:6===r.level?2:3)<<6,0!==r.strstart&&(d|=32),d+=31-d%31,r.status=f,_(r,d),0!==r.strstart&&(_(r,e.adler>>>16),_(r,65535&e.adler)),e.adler=1}if(69===r.status)if(r.gzhead.extra){for(o=r.pending;r.gzindex<(65535&r.gzhead.extra.length)&&(r.pending!==r.pending_buf_size||(r.gzhead.hcrc&&r.pending>o&&(e.adler=a(e.adler,r.pending_buf,r.pending-o,o)),w(e),o=r.pending,r.pending!==r.pending_buf_size));)y(r,255&r.gzhead.extra[r.gzindex]),r.gzindex++;r.gzhead.hcrc&&r.pending>o&&(e.adler=a(e.adler,r.pending_buf,r.pending-o,o)),r.gzindex===r.gzhead.extra.length&&(r.gzindex=0,r.status=73)}else 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r.last_flush=-1,0}return 4!==t?0:r.wrap<=0?1:(2===r.wrap?(y(r,255&e.adler),y(r,e.adler>>8&255),y(r,e.adler>>16&255),y(r,e.adler>>24&255),y(r,255&e.total_in),y(r,e.total_in>>8&255),y(r,e.total_in>>16&255),y(r,e.total_in>>24&255)):(_(r,e.adler>>>16),_(r,65535&e.adler)),w(e),r.wrap>0&&(r.wrap=-r.wrap),0!==r.pending?0:1)},t.deflateEnd=function(e){var t;return e&&e.state?42!==(t=e.state.status)&&69!==t&&73!==t&&91!==t&&t!==u&&t!==f&&t!==p?g(e,h):(e.state=null,t===f?g(e,-3):0):h},t.deflateSetDictionary=function(e,t){var i,n,s,a,l,c,d,u,f=t.length;if(!e||!e.state)return h;if(2===(a=(i=e.state).wrap)||1===a&&42!==i.status||i.lookahead)return h;for(1===a&&(e.adler=o(e.adler,t,f,0)),i.wrap=0,f>=i.w_size&&(0===a&&(b(i.head),i.strstart=0,i.block_start=0,i.insert=0),u=new 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u(){this.mode=0,this.last=!1,this.wrap=0,this.havedict=!1,this.flags=0,this.dmax=0,this.check=0,this.total=0,this.head=null,this.wbits=0,this.wsize=0,this.whave=0,this.wnext=0,this.window=null,this.hold=0,this.bits=0,this.length=0,this.offset=0,this.extra=0,this.lencode=null,this.distcode=null,this.lenbits=0,this.distbits=0,this.ncode=0,this.nlen=0,this.ndist=0,this.have=0,this.next=null,this.lens=new n.Buf16(320),this.work=new n.Buf16(288),this.lendyn=null,this.distdyn=null,this.sane=0,this.back=0,this.was=0}function f(e){var t;return e&&e.state?(t=e.state,e.total_in=e.total_out=t.total=0,e.msg="",t.wrap&&(e.adler=1&t.wrap),t.mode=1,t.last=0,t.havedict=0,t.dmax=32768,t.head=null,t.hold=0,t.bits=0,t.lencode=t.lendyn=new n.Buf32(852),t.distcode=t.distdyn=new n.Buf32(592),t.sane=1,t.back=-1,0):l}function p(e){var t;return e&&e.state?((t=e.state).wsize=0,t.whave=0,t.wnext=0,f(e)):l}function g(e,t){var i,n;return 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e;m--,w+=u[p++]<<v,v+=8}i.head&&(i.head.time=w),512&i.flags&&(P[0]=255&w,P[1]=w>>>8&255,P[2]=w>>>16&255,P[3]=w>>>24&255,i.check=s(i.check,P,4,0)),w=0,v=0,i.mode=4;case 4:for(;v<16;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}i.head&&(i.head.xflags=255&w,i.head.os=w>>8),512&i.flags&&(P[0]=255&w,P[1]=w>>>8&255,i.check=s(i.check,P,2,0)),w=0,v=0,i.mode=5;case 5:if(1024&i.flags){for(;v<16;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}i.length=w,i.head&&(i.head.extra_len=w),512&i.flags&&(P[0]=255&w,P[1]=w>>>8&255,i.check=s(i.check,P,2,0)),w=0,v=0}else i.head&&(i.head.extra=null);i.mode=6;case 6:if(1024&i.flags&&((C=i.length)>m&&(C=m),C&&(i.head&&(N=i.head.extra_len-i.length,i.head.extra||(i.head.extra=new Array(i.head.extra_len)),n.arraySet(i.head.extra,u,p,C,N)),512&i.flags&&(i.check=s(i.check,u,C,p)),m-=C,p+=C,i.length-=C),i.length))break e;i.length=0,i.mode=7;case 7:if(2048&i.flags){if(0===m)break e;C=0;do{N=u[p+C++],i.head&&N&&i.length<65536&&(i.head.name+=String.fromCharCode(N))}while(N&&C<m);if(512&i.flags&&(i.check=s(i.check,u,C,p)),m-=C,p+=C,N)break e}else i.head&&(i.head.name=null);i.length=0,i.mode=8;case 8:if(4096&i.flags){if(0===m)break e;C=0;do{N=u[p+C++],i.head&&N&&i.length<65536&&(i.head.comment+=String.fromCharCode(N))}while(N&&C<m);if(512&i.flags&&(i.check=s(i.check,u,C,p)),m-=C,p+=C,N)break e}else i.head&&(i.head.comment=null);i.mode=9;case 9:if(512&i.flags){for(;v<16;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}if(w!==(65535&i.check)){e.msg="header crc mismatch",i.mode=c;break}w=0,v=0}i.head&&(i.head.hcrc=i.flags>>9&1,i.head.done=!0),e.adler=i.check=0,i.mode=h;break;case 10:for(;v<32;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}e.adler=i.check=d(w),w=0,v=0,i.mode=11;case 11:if(0===i.havedict)return e.next_out=g,e.avail_out=b,e.next_in=p,e.avail_in=m,i.hold=w,i.bits=v,2;e.adler=i.check=1,i.mode=h;case h:if(5===t||6===t)break e;case 13:if(i.last){w>>>=7&v,v-=7&v,i.mode=27;break}for(;v<3;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}switch(i.last=1&w,v-=1,3&(w>>>=1)){case 0:i.mode=14;break;case 1:if(y(i),i.mode=20,6===t){w>>>=2,v-=2;break e}break;case 2:i.mode=17;break;case 3:e.msg="invalid block type",i.mode=c}w>>>=2,v-=2;break;case 14:for(w>>>=7&v,v-=7&v;v<32;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}if((65535&w)!=(w>>>16^65535)){e.msg="invalid stored block lengths",i.mode=c;break}if(i.length=65535&w,w=0,v=0,i.mode=15,6===t)break e;case 15:i.mode=16;case 16:if(C=i.length){if(C>m&&(C=m),C>b&&(C=b),0===C)break e;n.arraySet(f,u,p,C,g),m-=C,p+=C,b-=C,g+=C,i.length-=C;break}i.mode=h;break;case 17:for(;v<14;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}if(i.nlen=257+(31&w),w>>>=5,v-=5,i.ndist=1+(31&w),w>>>=5,v-=5,i.ncode=4+(15&w),w>>>=4,v-=4,i.nlen>286||i.ndist>30){e.msg="too many length or distance symbols",i.mode=c;break}i.have=0,i.mode=18;case 18:for(;i.have<i.ncode;){for(;v<3;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}i.lens[z[i.have++]]=7&w,w>>>=3,v-=3}for(;i.have<19;)i.lens[z[i.have++]]=0;if(i.lencode=i.lendyn,i.lenbits=7,B={bits:i.lenbits},F=a(0,i.lens,0,19,i.lencode,0,i.work,B),i.lenbits=B.bits,F){e.msg="invalid code lengths set",i.mode=c;break}i.have=0,i.mode=19;case 19:for(;i.have<i.nlen+i.ndist;){for(;T=(D=i.lencode[w&(1<<i.lenbits)-1])>>>16&255,M=65535&D,!((E=D>>>24)<=v);){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}if(M<16)w>>>=E,v-=E,i.lens[i.have++]=M;else{if(16===M){for(O=E+2;v<O;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}if(w>>>=E,v-=E,0===i.have){e.msg="invalid bit length repeat",i.mode=c;break}N=i.lens[i.have-1],C=3+(3&w),w>>>=2,v-=2}else if(17===M){for(O=E+3;v<O;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}v-=E,N=0,C=3+(7&(w>>>=E)),w>>>=3,v-=3}else{for(O=E+7;v<O;){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}v-=E,N=0,C=11+(127&(w>>>=E)),w>>>=7,v-=7}if(i.have+C>i.nlen+i.ndist){e.msg="invalid bit length repeat",i.mode=c;break}for(;C--;)i.lens[i.have++]=N}}if(i.mode===c)break;if(0===i.lens[256]){e.msg="invalid code -- missing end-of-block",i.mode=c;break}if(i.lenbits=9,B={bits:i.lenbits},F=a(1,i.lens,0,i.nlen,i.lencode,0,i.work,B),i.lenbits=B.bits,F){e.msg="invalid literal/lengths set",i.mode=c;break}if(i.distbits=6,i.distcode=i.distdyn,B={bits:i.distbits},F=a(2,i.lens,i.nlen,i.ndist,i.distcode,0,i.work,B),i.distbits=B.bits,F){e.msg="invalid distances set",i.mode=c;break}if(i.mode=20,6===t)break e;case 20:i.mode=21;case 21:if(m>=6&&b>=258){e.next_out=g,e.avail_out=b,e.next_in=p,e.avail_in=m,i.hold=w,i.bits=v,o(e,k),g=e.next_out,f=e.output,b=e.avail_out,p=e.next_in,u=e.input,m=e.avail_in,w=i.hold,v=i.bits,i.mode===h&&(i.back=-1);break}for(i.back=0;T=(D=i.lencode[w&(1<<i.lenbits)-1])>>>16&255,M=65535&D,!((E=D>>>24)<=v);){if(0===m)break e;m--,w+=u[p++]<<v,v+=8}if(T&&0==(240&T)){for(R=E,L=T,I=M;T=(D=i.lencode[I+((w&(1<<R+L)-1)>>R)])>>>16&255,M=65535&D,!(R+(E=D>>>24)<=v);){if(0===m)break 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i,n,r,s,o,a,l=t.dyn_tree,h=t.max_code,c=t.stat_desc.static_tree,d=t.stat_desc.has_stree,u=t.stat_desc.extra_bits,f=t.stat_desc.extra_base,p=t.stat_desc.max_length,g=0;for(s=0;s<=15;s++)e.bl_count[s]=0;for(l[2*e.heap[e.heap_max]+1]=0,i=e.heap_max+1;i<573;i++)(s=l[2*l[2*(n=e.heap[i])+1]+1]+1)>p&&(s=p,g++),l[2*n+1]=s,n>h||(e.bl_count[s]++,o=0,n>=f&&(o=u[n-f]),a=l[2*n],e.opt_len+=a*(s+o),d&&(e.static_len+=a*(c[2*n+1]+o)));if(0!==g){do{for(s=p-1;0===e.bl_count[s];)s--;e.bl_count[s]--,e.bl_count[s+1]+=2,e.bl_count[p]--,g-=2}while(g>0);for(s=p;0!==s;s--)for(n=e.bl_count[s];0!==n;)(r=e.heap[--i])>h||(l[2*r+1]!==s&&(e.opt_len+=(s-l[2*r+1])*l[2*r],l[2*r+1]=s),n--)}}(e,t),S(s,h,e.bl_count)}function I(e,t,i){var n,r,s=-1,o=t[1],a=0,l=7,h=4;for(0===o&&(l=138,h=3),t[2*(i+1)+1]=65535,n=0;n<=i;n++)r=o,o=t[2*(n+1)+1],++a<l&&r===o||(a<h?e.bl_tree[2*r]+=a:0!==r?(r!==s&&e.bl_tree[2*r]++,e.bl_tree[32]++):a<=10?e.bl_tree[34]++:e.bl_tree[36]++,a=0,s=r,0===o?(l=138,h=3):r===o?(l=6,h=3):(l=7,h=4))}function 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Is this the correct genome for the loaded CRAM?"),this.browser.alert.present(new Error(t)),e}function a(e,t){const i=new Td;if(i.chr=t[e.sequenceId],i.start=e.alignmentStart-1,i.lengthOnRef=e.lengthOnRef,i.flags=e.flags,i.strand=!(16&e.flags),i.fragmentLength=e.templateLength||e.templateSize,i.mq=e.mappingQuality,i.end=e.alignmentStart+e.lengthOnRef,i.readGroupId=e.readGroupId,e.mate&&void 0!==e.mate.sequenceId){const n=void 0!==e.mate.flags?!(1&e.mate.flags):!(32&e.flags);i.mate={chr:t[e.mate.sequenceId],position:e.mate.alignmentStart,strand:n}}return i.seq=e.getReadBases(),i.qual=e.qualityScores,i.tagDict=e.tags,i.readName=e.readName,function(e,t){const i=[];let n,r,s=0,o="";if(t.scStart=t.start,t.scLengthOnRef=t.lengthOnRef,e.readFeatures)for(let a of e.readFeatures){const e=a.code,l=a.data,h=a.pos-1,c=a.refPos-1;switch(e){case"S":case"I":case"i":case"N":case"D":if(h>s){const e=h-s;i.push(new Od({start:c-e,seqOffset:s,len:e,type:"M"})),s+=e,o+=e+"M"}if("S"===e){let n=c;t.scLengthOnRef+=l.length,0===h&&(t.scStart-=l.length,n-=l.length);const r=l.length;i.push(new Od({start:n,seqOffset:s,len:r,type:"S"})),s+=r,o+=r+e}else if("I"===e||"i"===e){void 0===n&&(n=[]);const t="i"===e?1:l.length;n.push(new Od({start:c,len:t,seqOffset:s,type:"I"})),s+=t,o+=t+e}else"D"!==e&&"N"!==e||(r||(r=[]),r.push({start:c,len:l,type:e}),o+=l+e);break;case"H":case"P":o+=l+e}}const a=e.readLength-s;a>0&&(i.push(new Od({start:e.alignmentStart+e.lengthOnRef-a-1,seqOffset:s,len:a,type:"M"})),o+=a+"M");t.blocks=i,t.insertions=n,t.gaps=r,t.cigar=o}(e,i),i.mate&&i.start>i.mate.position&&i.fragmentLength>0&&(i.fragmentLength=-i.fragmentLength),Vd.setPairOrientation(i),i}}}class tu{constructor(e,t){this.position=0,this.url=e,this.config=t,this.cache=new iu({fetch:(e,t)=>this._fetch(e,t)})}async _fetch(e,t){const i={start:e,size:t};this._stat={size:void 0};const n=await ea.loadArrayBuffer(this.url,Ca(this.config,{range:i}));return Buffer.from(n)}async read(e,t=0,i=1/0,n=0){let r=n;return null===n&&(r=this.position,this.position+=i),this.cache.get(e,t,i,n)}async readFile(){const e=await ea.loadArrayBuffer(this.url,Ca(this.config));return Buffer.from(e)}async stat(){if(!this._stat){const e=Buffer.allocUnsafe(10);if(await this.read(e,0,10,0),!this._stat)throw new Error(`unable to determine size of file at ${this.url}`)}return this._stat}}class iu{constructor({fetch:e,size:t=1e7,chunkSize:i=32768}){this.fetch=e,this.chunkSize=i,this.lruCache=new nu({maxSize:Math.floor(t/i)})}async get(e,t,i,n){if(e.length<t+i)throw new Error("output buffer not big enough for request");const r=Math.floor(n/this.chunkSize),s=Math.floor((n+i)/this.chunkSize),o=new Array(s-r+1);for(let e=r;e<=s;e+=1)o[e-r]=this._getChunk(e).then((t=>({data:t,chunkNumber:e})));const a=await Promise.all(o),l=n-a[0].chunkNumber*this.chunkSize;a.forEach((({data:o,chunkNumber:a})=>{const h=a*this.chunkSize;let c=0,d=this.chunkSize,u=t+(a-r)*this.chunkSize-l;a===r&&(u=t,c=l),a===s&&(d=n+i-h),o.copy(e,u,c,d)}))}_getChunk(e){const t=this.lruCache.get(e);if(t)return t;const i=this.fetch(e*this.chunkSize,this.chunkSize);return this.lruCache.set(e,i),i}}class nu{constructor(e={}){if(!(e.maxSize&&e.maxSize>0))throw new TypeError("`maxSize` must be a number greater than 0");this.maxSize=e.maxSize,this.cache=new Map,this.oldCache=new Map,this._size=0}_set(e,t){this.cache.set(e,t),this._size++,this._size>=this.maxSize&&(this._size=0,this.oldCache=this.cache,this.cache=new Map)}get(e){if(this.cache.has(e))return this.cache.get(e);if(this.oldCache.has(e)){const t=this.oldCache.get(e);return this._set(e,t),t}}set(e,t){return this.cache.has(e)?this.cache.set(e,t):this._set(e,t),this}has(e){return this.cache.has(e)||this.oldCache.has(e)}peek(e){return this.cache.has(e)?this.cache.get(e):this.oldCache.has(e)?this.oldCache.get(e):void 0}delete(e){const t=this.cache.delete(e);return t&&this._size--,this.oldCache.delete(e)||t}clear(){this.cache.clear(),this.oldCache.clear(),this._size=0}*keys(){for(const[e]of this)yield e}*values(){for(const[,e]of this)yield e}*[Symbol.iterator](){for(const e of this.cache)yield e;for(const e of this.oldCache){const[t]=e;this.cache.has(t)||(yield e)}}get size(){let e=0;for(const t of this.oldCache.keys())this.cache.has(t)||e++;return this._size+e}}var ru={ALIGNMENT_MATCH:"M",INSERT:"I",DELETE:"D",SKIP:"N",CLIP_SOFT:"S",CLIP_HARD:"H",PAD:"P",SEQUENCE_MATCH:"=",SEQUENCE_MISMATCH:"X"};const su=function(e,t){this.config=e,this.genome=t,this.url=e.url,this.filter=new Dd(e.filter),this.readGroupSetIds=e.readGroupSetIds,this.authKey=e.authKey,this.samplingWindowSize=void 0===e.samplingWindowSize?100:e.samplingWindowSize,this.samplingDepth=void 0===e.samplingDepth?1e3:e.samplingDepth,e.viewAsPairs?this.pairsSupported=!0:this.pairsSupported=void 0===e.pairsSupported||e.pairsSupported};su.prototype.readAlignments=function(e,t,i){const n=this.genome,r=this;return(r.chrAliasTable?Promise.resolve(r.chrAliasTable):r.readMetadata().then((function(e){if(r.chrAliasTable={},n&&e.readGroups&&e.readGroups.length>0){var t=e.readGroups[0].referenceSetId;return t?kc({url:r.url+"/references/search",body:{referenceSetId:t},decode:function(e){return e.references}}).then((function(e){return e.forEach((function(e){var t=e.name,i=n.getChromosomeName(t);r.chrAliasTable[i]=t})),r.chrAliasTable})):(function(e,t){var i;if("461916304629"===t||"337315832689"===t){for(i=1;i<23;i++)e["chr"+i]=i;e.chrX="X",e.chrY="Y",e.chrM="MT"}}(r.chrAliasTable,r.config.datasetId),r.chrAliasTable)}return r.chrAliasTable}))).then((function(n){var o=n.hasOwnProperty(e)?n[e]:e;return kc({url:r.url+"/reads/search",body:{readGroupSetIds:[r.readGroupSetIds],referenceName:o,start:t,end:i,pageSize:"10000"},decode:s,results:new yd(e,t,i,r.config)})}));function s(e){var t,i,s,o,a,l=e.alignments,h=l.length,c=[];for(t=0;t<h;t++){let e=l[t];(i=new Td).readName=e.fragmentName,i.properPlacement=e.properPlacement,i.duplicateFragment=e.duplicateFragment,i.numberReads=e.numberReads,i.fragmentLength=e.fragmentLength,i.readNumber=e.readNumber,i.failedVendorQualityChecks=e.failedVendorQualityChecks,i.secondaryAlignment=e.secondaryAlignment,i.supplementaryAlignment=e.supplementaryAlignment,i.seq=e.alignedSequence,i.qual=e.alignedQuality,i.matePos=e.nextMatePosition,i.tagDict=e.info,i.flags=0,e.alignment?(i.mapped=!0,i.chr=e.alignment.position.referenceName,n&&(i.chr=n.getChromosomeName(i.chr)),i.start=parseInt(e.alignment.position.position),i.strand=!e.alignment.position.reverseStrand,i.mq=e.alignment.mappingQuality,i.cigar=d(e.alignment.cigar),s=u(e.alignment.cigar),i.lengthOnRef=s.lengthOnRef,a=f(i,s.array),i.blocks=a.blocks,i.insertions=a.insertions):i.mapped=!1,(o=e.nextMatePosition)&&(i.mate={chr:o.referenceFrame,position:parseInt(o.position),strand:!o.reverseStrand}),r.filter.pass(i)&&c.push(i)}return c;function d(e){var t="";return e.forEach((function(e){var i=ru[e.operation],n=e.operationLength;t+=n+i})),t}function u(e){var t,i,n,r,s=0,o=[];for(r=0;r<e.length;r++)t=e[r],n=ru[t.operation],i=parseInt(t.operationLength),"M"!==n&&"EQ"!==n&&"X"!==n&&"D"!==n&&"N"!==n&&"="!==n||(s+=i),o.push({len:i,ltr:n});return{lengthOnRef:s,array:o}}function f(e,t){for(var i,n,r,s=[],o=0,a=e.start,l=t.length,h=0;h<l;h++){var c=t[h];switch(c.ltr){case"H":case"P":break;case"S":o+=c.len,r="S";break;case"N":case"D":void 0===i&&(i=[]),i.push({start:a,len:c.len,type:c.ltr}),a+=c.len;break;case"I":void 0===n&&(n=[]),n.push(new Od({start:a,len:c.len,seqOffset:o})),o+=c.len;break;case"M":case"EQ":case"=":case"X":s.push(new Od({start:a,len:c.len,seqOffset:o,gapType:r})),o+=c.len,a+=c.len;break;default:console.log("Error processing cigar element: "+c.len+c.ltr)}}return{blocks:s,insertions:n,gaps:i}}}},su.prototype.readMetadata=function(){return xc({url:this.url,entity:"readgroupsets",entityId:this.readGroupSetIds})};class ou{constructor(e,t){const i=t.genome;if(this.config=e,this.genome=i,Ma(e.url)&&(this.config.indexed=!1),"ga4gh"===e.sourceType)this.bamReader=new su(e,i);else if("pysam"===e.sourceType)this.bamReader=new Xd(e,i);else if("htsget"===e.sourceType)this.bamReader=new Kd(e,i);else if("shardedBam"===e.sourceType)this.bamReader=new Qd(e,i);else if("cram"===e.format)this.bamReader=new eu(e,i,t);else{if(!this.config.indexURL&&!1!==e.indexed)if(ji(this.config.url)){const e=Ha(this.config.url,"bai");e?(console.error(`Warning: no indexURL specified for ${this.config.url}.  Guessing ${this.baiPath}`),this.config.indexURL=e):(console.error(`Warning: no indexURL specified for ${this.config.url}.`),this.config.indexed=!1)}else console.error(`Warning: no indexURL specified for ${this.config.name}.`),this.config.indexed=!1;!1!==this.config.indexed?this.bamReader=new Zd(e,i):this.bamReader=new Gd(e,i)}this.viewAsPairs=e.viewAsPairs,this.showSoftClips=e.showSoftClips}setViewAsPairs(e){this.viewAsPairs=e}setShowSoftClips(e){this.showSoftClips=e}async getAlignments(e,t,i){const n=this.genome,r=this.showSoftClips,s=await this.bamReader.readAlignments(e,t,i);let o=s.alignments;this.viewAsPairs||(o=bd([{alignments:o}]));const a=o.length>0;if(s.packedAlignmentRows=wd(o,s.start,s.end,r),this.alignmentContainer=s,a){const t=await n.sequence.getSequence(e,s.start,s.end);if(t)return s.coverageMap.refSeq=t,s.sequence=t,s;console.error("No sequence for: "+e+":"+s.start+"-"+s.end)}return s}}function au(e,t,i){var n,r,s,o,a,l,h,c={font:"normal 10px Arial",textAlign:"right",strokeStyle:"black"};if(void 0===this.dataRange||void 0===this.dataRange.max||void 0===this.dataRange.min)return;let d=void 0!==this.flipAxis&&this.flipAxis;function u(e){return 0===e?"0":Math.abs(e)>=10?e.toFixed():Math.abs(e)>=1?e.toFixed(1):e.toFixed(2)}va.fillRect(e,0,0,t,i,{fillStyle:"rgb(255, 255, 255)"}),n=(h=.95*t)-8,a={x:r=h,y:s=o=.01*i},va.strokeLine(e,n,s,r,o,c),va.fillText(e,u(d?this.dataRange.min:this.dataRange.max),n+4,s+12,c),l={x:r,y:s=o=.99*i},va.strokeLine(e,n,s,r,o,c),va.fillText(e,u(d?this.dataRange.max:this.dataRange.min),n+4,s-4,c),va.strokeLine(e,a.x,a.y,l.x,l.y,c)}class lu{constructor({chr:e,start:t,end:i}){this.chr=e,this.start=t,this.end=i}contains(e){return e.chr===this.chr&&e.start>=this.start&&e.end<=this.end}overlaps(e){return e.chr===this.chr&&!(e.end<this.start||e.start>this.end)}extend(e){e.chr===this.chr&&(this.start=Math.min(e.start,this.start),this.end=Math.max(e.end,this.end))}getLocusString(){if("all"===this.chr)return"all";{const e=$i(Math.floor(this.start)+1),t=$i(Math.round(this.end));return`${this.chr}:${e}-${t}`}}static fromLocusString(e){if("all"===e)return new lu({chr:"all"});const t=e.split(":"),i=t[0],n=t[1].split("-"),r=Number.parseInt(n[0].replace(/,/g,""))-1,s=Number.parseInt(n[1].replace(/,/g,""));return new lu({chr:i,start:r,end:s})}}
+/*!
+     * vanilla-picker v2.12.1
+     * https://vanilla-picker.js.org
+     *
+     * Copyright 2017-2021 Andreas Borgen (https://github.com/Sphinxxxx), Adam Brooks (https://github.com/dissimulate)
+     * Released under the ISC license.
+     */var hu=function(e,t){if(!(e instanceof t))throw new TypeError("Cannot call a class as a function")},cu=function(){function e(e,t){for(var i=0;i<t.length;i++){var n=t[i];n.enumerable=n.enumerable||!1,n.configurable=!0,"value"in n&&(n.writable=!0),Object.defineProperty(e,n.key,n)}}return function(t,i,n){return i&&e(t.prototype,i),n&&e(t,n),t}}(),du=function(e,t){if(Array.isArray(e))return e;if(Symbol.iterator in Object(e))return function(e,t){var i=[],n=!0,r=!1,s=void 0;try{for(var o,a=e[Symbol.iterator]();!(n=(o=a.next()).done)&&(i.push(o.value),!t||i.length!==t);n=!0);}catch(e){r=!0,s=e}finally{try{!n&&a.return&&a.return()}finally{if(r)throw s}}return i}(e,t);throw new TypeError("Invalid attempt to destructure non-iterable instance")};String.prototype.startsWith=String.prototype.startsWith||function(e){return 0===this.indexOf(e)},String.prototype.padStart=String.prototype.padStart||function(e,t){for(var i=this;i.length<e;)i=t+i;return i};var 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t<3?e.toString(16):Math.round(255*e).toString(16)})).map((function(e){return e.padStart(2,"0")})).join("")},set:function(t){this.rgba=e.hexToRgb(t)}}],[{key:"hexToRgb",value:function(e){var t=(e.startsWith("#")?e.slice(1):e).replace(/^(\w{3})$/,"$1F").replace(/^(\w)(\w)(\w)(\w)$/,"$1$1$2$2$3$3$4$4").replace(/^(\w{6})$/,"$1FF");if(!t.match(/^([0-9a-fA-F]{8})$/))throw new Error("Unknown hex color; "+e);var i=t.match(/^(\w\w)(\w\w)(\w\w)(\w\w)$/).slice(1).map((function(e){return parseInt(e,16)}));return i[3]=i[3]/255,i}},{key:"nameToRgb",value:function(t){var i=t.toLowerCase().replace("at","T").replace(/[aeiouyldf]/g,"").replace("ght","L").replace("rk","D").slice(-5,4),n=uu[i];return void 0===n?n:e.hexToRgb(n.replace(/\-/g,"00").padStart(6,"f"))}},{key:"rgbToHsl",value:function(e){var t=du(e,4),i=t[0],n=t[1],r=t[2],s=t[3];i/=255,n/=255,r/=255;var o=Math.max(i,n,r),a=Math.min(i,n,r),l=void 0,h=void 0,c=(o+a)/2;if(o===a)l=h=0;else{var d=o-a;switch(h=c>.5?d/(2-o-a):d/(o+a),o){case 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e._doRemove(t.target,t.type,t.handler)})),this._events=[]}}],[{key:"_doRemove",value:function(e,t,i){e.removeEventListener(t,i,!1)}}]),e}();function mu(e,t,i){var n=!1;function r(e,t,i){return Math.max(t,Math.min(e,i))}function s(e,s,o){if(o&&(n=!0),n){e.preventDefault();var a=t.getBoundingClientRect(),l=a.width,h=a.height,c=s.clientX,d=s.clientY,u=r(c-a.left,0,l),f=r(d-a.top,0,h);i(u/l,f/h)}}function o(e,t){1===(void 0===e.buttons?e.which:e.buttons)?s(e,e,t):n=!1}function a(e,t){1===e.touches.length?s(e,e.touches[0],t):n=!1}e.add(t,"mousedown",(function(e){o(e,!0)})),e.add(t,"touchstart",(function(e){a(e,!0)})),e.add(window,"mousemove",o),e.add(t,"touchmove",a),e.add(window,"mouseup",(function(e){n=!1})),e.add(t,"touchend",(function(e){n=!1})),e.add(t,"touchcancel",(function(e){n=!1}))}var bu="keydown",wu="mousedown",vu="focusin";function yu(e,t){return(t||document).querySelector(e)}function _u(e){e.preventDefault(),e.stopPropagation()}function xu(e,t,i,n,r){e.add(t,bu,(function(e){i.indexOf(e.key)>=0&&(r&&_u(e),n(e))}))}var ku=function(){function e(t){hu(this,e),this.settings={popup:"right",layout:"default",alpha:!0,editor:!0,editorFormat:"hex",cancelButton:!1,defaultColor:"#0cf"},this._events=new gu,this.onChange=null,this.onDone=null,this.onOpen=null,this.onClose=null,this.setOptions(t)}return cu(e,[{key:"setOptions",value:function(e){var t=this;if(e){var i=this.settings;if(e instanceof HTMLElement)i.parent=e;else{i.parent&&e.parent&&i.parent!==e.parent&&(this._events.remove(i.parent),this._popupInited=!1),function(e,t,i){for(var n in e)i&&i.indexOf(n)>=0||(t[n]=e[n])}(e,i),e.onChange&&(this.onChange=e.onChange),e.onDone&&(this.onDone=e.onDone),e.onOpen&&(this.onOpen=e.onOpen),e.onClose&&(this.onClose=e.onClose);var n=e.color||e.colour;n&&this._setColor(n)}var r=i.parent;if(r&&i.popup&&!this._popupInited){var s=function(e){return t.openHandler(e)};this._events.add(r,"click",s),xu(this._events,r,[" ","Spacebar","Enter"],s),this._popupInited=!0}else e.parent&&!i.popup&&this.show()}}},{key:"openHandler",value:function(e){if(this.show()){e&&e.preventDefault(),this.settings.parent.style.pointerEvents="none";var t=e&&e.type===bu?this._domEdit:this.domElement;setTimeout((function(){return t.focus()}),100),this.onOpen&&this.onOpen(this.colour)}}},{key:"closeHandler",value:function(e){var t=e&&e.type,i=!1;if(e)if(t===wu||t===vu){var n=(this.__containedEvent||0)+100;e.timeStamp>n&&(i=!0)}else _u(e),i=!0;else i=!0;i&&this.hide()&&(this.settings.parent.style.pointerEvents="",t!==wu&&this.settings.parent.focus(),this.onClose&&this.onClose(this.colour))}},{key:"movePopup",value:function(e,t){this.closeHandler(),this.setOptions(e),t&&this.openHandler()}},{key:"setColor",value:function(e,t){this._setColor(e,{silent:t})}},{key:"_setColor",value:function(e,t){if("string"==typeof e&&(e=e.trim()),e){t=t||{};var i=void 0;try{i=new pu(e)}catch(e){if(t.failSilently)return;throw e}if(!this.settings.alpha){var n=i.hsla;n[3]=1,i.hsla=n}this.colour=this.color=i,this._setHSLA(null,null,null,null,t)}}},{key:"setColour",value:function(e,t){this.setColor(e,t)}},{key:"show",value:function(){if(!this.settings.parent)return!1;if(this.domElement){var e=this._toggleDOM(!0);return this._setPosition(),e}var t=function(e){var t=document.createElement("div");return t.innerHTML=e,t.firstElementChild}(this.settings.template||'<div class="picker_wrapper" tabindex="-1"><div class="picker_arrow"></div><div class="picker_hue picker_slider"><div class="picker_selector"></div></div><div class="picker_sl"><div class="picker_selector"></div></div><div class="picker_alpha picker_slider"><div class="picker_selector"></div></div><div class="picker_editor"><input aria-label="Type a color name or hex value"/></div><div class="picker_sample"></div><div class="picker_done"><button>Ok</button></div><div class="picker_cancel"><button>Cancel</button></div></div>');return this.domElement=t,this._domH=yu(".picker_hue",t),this._domSL=yu(".picker_sl",t),this._domA=yu(".picker_alpha",t),this._domEdit=yu(".picker_editor input",t),this._domSample=yu(".picker_sample",t),this._domOkay=yu(".picker_done button",t),this._domCancel=yu(".picker_cancel button",t),t.classList.add("layout_"+this.settings.layout),this.settings.alpha||t.classList.add("no_alpha"),this.settings.editor||t.classList.add("no_editor"),this.settings.cancelButton||t.classList.add("no_cancel"),this._ifPopup((function(){return t.classList.add("popup")})),this._setPosition(),this.colour?this._updateUI():this._setColor(this.settings.defaultColor),this._bindEvents(),!0}},{key:"hide",value:function(){return this._toggleDOM(!1)}},{key:"destroy",value:function(){this._events.destroy(),this.domElement&&this.settings.parent.removeChild(this.domElement)}},{key:"_bindEvents",value:function(){var e=this,t=this,i=this.domElement,n=this._events;function r(e,t,i){n.add(e,t,i)}r(i,"click",(function(e){return e.preventDefault()})),mu(n,this._domH,(function(e,i){return t._setHSLA(e)})),mu(n,this._domSL,(function(e,i){return t._setHSLA(null,e,1-i)})),this.settings.alpha&&mu(n,this._domA,(function(e,i){return t._setHSLA(null,null,null,1-i)}));var s=this._domEdit;r(s,"input",(function(e){t._setColor(this.value,{fromEditor:!0,failSilently:!0})})),r(s,"focus",(function(e){var t=this;t.selectionStart===t.selectionEnd&&t.select()})),this._ifPopup((function(){var t=function(t){return e.closeHandler(t)};r(window,wu,t),r(window,vu,t),xu(n,i,["Esc","Escape"],t);var s=function(t){e.__containedEvent=t.timeStamp};r(i,wu,s),r(i,vu,s),r(e._domCancel,"click",t)}));var o=function(t){e._ifPopup((function(){return e.closeHandler(t)})),e.onDone&&e.onDone(e.colour)};r(this._domOkay,"click",o),xu(n,i,["Enter"],o)}},{key:"_setPosition",value:function(){var e=this.settings.parent,t=this.domElement;e!==t.parentNode&&e.appendChild(t),this._ifPopup((function(i){"static"===getComputedStyle(e).position&&(e.style.position="relative");var n=!0===i?"popup_right":"popup_"+i;["popup_top","popup_bottom","popup_left","popup_right"].forEach((function(e){e===n?t.classList.add(e):t.classList.remove(e)})),t.classList.add(n)}))}},{key:"_setHSLA",value:function(e,t,i,n,r){r=r||{};var s=this.colour,o=s.hsla;[e,t,i,n].forEach((function(e,t){(e||0===e)&&(o[t]=e)})),s.hsla=o,this._updateUI(r),this.onChange&&!r.silent&&this.onChange(s)}},{key:"_updateUI",value:function(e){if(this.domElement){e=e||{};var t=this.colour,i=t.hsla,n="hsl("+360*i[0]+", 100%, 50%)",r=t.hslString,s=t.hslaString,o=this._domH,a=this._domSL,l=this._domA,h=yu(".picker_selector",o),c=yu(".picker_selector",a),d=yu(".picker_selector",l);w(0,h,i[0]),this._domSL.style.backgroundColor=this._domH.style.color=n,w(0,c,i[1]),v(0,c,1-i[2]),a.style.color=r,v(0,d,1-i[3]);var u=r,f=u.replace("hsl","hsla").replace(")",", 0)"),p="linear-gradient("+[u,f]+")";if(this._domA.style.background=p+", linear-gradient(45deg, lightgrey 25%, transparent 25%, transparent 75%, lightgrey 75%) 0 0 / 2em 2em,\n                   linear-gradient(45deg, lightgrey 25%,       white 25%,       white 75%, lightgrey 75%) 1em 1em / 2em 2em",!e.fromEditor){var g=this.settings.editorFormat,m=this.settings.alpha,b=void 0;switch(g){case"rgb":b=t.printRGB(m);break;case"hsl":b=t.printHSL(m);break;default:b=t.printHex(m)}this._domEdit.value=b}this._domSample.style.color=s}function w(e,t,i){t.style.left=100*i+"%"}function v(e,t,i){t.style.top=100*i+"%"}}},{key:"_ifPopup",value:function(e,t){this.settings.parent&&this.settings.popup?e&&e(this.settings.popup):t&&t()}},{key:"_toggleDOM",value:function(e){var t=this.domElement;if(!t)return!1;var i=e?"":"none",n=t.style.display!==i;return n&&(t.style.display=i),n}}]),e}(),Cu=document.createElement("style");function Su(e){if(Au[e])return Au[e];if(Au["chr"+e]){const t=Au["chr"+e];return Au[e]=t,t}{const r=(t=Math.round(255*Math.random()).toString(10),i=Math.round(255*Math.random()).toString(10),n=Math.round(255*Math.random()).toString(10),"rgb("+t+","+i+","+n+")");return Au[e]=r,r}var t,i,n}Cu.textContent='.picker_wrapper.no_alpha .picker_alpha{display:none}.picker_wrapper.no_editor .picker_editor{position:absolute;z-index:-1;opacity:0}.picker_wrapper.no_cancel .picker_cancel{display:none}.layout_default.picker_wrapper{display:flex;flex-flow:row wrap;justify-content:space-between;align-items:stretch;font-size:10px;width:25em;padding:.5em}.layout_default.picker_wrapper input,.layout_default.picker_wrapper button{font-size:1rem}.layout_default.picker_wrapper>*{margin:.5em}.layout_default.picker_wrapper::before{content:"";display:block;width:100%;height:0;order:1}.layout_default .picker_slider,.layout_default .picker_selector{padding:1em}.layout_default .picker_hue{width:100%}.layout_default .picker_sl{flex:1 1 auto}.layout_default .picker_sl::before{content:"";display:block;padding-bottom:100%}.layout_default .picker_editor{order:1;width:6.5rem}.layout_default .picker_editor input{width:100%;height:100%}.layout_default .picker_sample{order:1;flex:1 1 auto}.layout_default .picker_done,.layout_default .picker_cancel{order:1}.picker_wrapper{box-sizing:border-box;background:#f2f2f2;box-shadow:0 0 0 1px silver;cursor:default;font-family:sans-serif;color:#444;pointer-events:auto}.picker_wrapper:focus{outline:none}.picker_wrapper button,.picker_wrapper input{box-sizing:border-box;border:none;box-shadow:0 0 0 1px silver;outline:none}.picker_wrapper button:focus,.picker_wrapper button:active,.picker_wrapper input:focus,.picker_wrapper input:active{box-shadow:0 0 2px 1px #1e90ff}.picker_wrapper button{padding:.4em .6em;cursor:pointer;background-color:#f5f5f5;background-image:linear-gradient(0deg, gainsboro, transparent)}.picker_wrapper button:active{background-image:linear-gradient(0deg, transparent, gainsboro)}.picker_wrapper button:hover{background-color:#fff}.picker_selector{position:absolute;z-index:1;display:block;-webkit-transform:translate(-50%, -50%);transform:translate(-50%, -50%);border:2px solid #fff;border-radius:100%;box-shadow:0 0 3px 1px #67b9ff;background:currentColor;cursor:pointer}.picker_slider .picker_selector{border-radius:2px}.picker_hue{position:relative;background-image:linear-gradient(90deg, red, yellow, lime, cyan, blue, magenta, red);box-shadow:0 0 0 1px silver}.picker_sl{position:relative;box-shadow:0 0 0 1px silver;background-image:linear-gradient(180deg, white, rgba(255, 255, 255, 0) 50%),linear-gradient(0deg, black, rgba(0, 0, 0, 0) 50%),linear-gradient(90deg, #808080, rgba(128, 128, 128, 0))}.picker_alpha,.picker_sample{position:relative;background:linear-gradient(45deg, lightgrey 25%, transparent 25%, transparent 75%, lightgrey 75%) 0 0/2em 2em,linear-gradient(45deg, lightgrey 25%, white 25%, white 75%, lightgrey 75%) 1em 1em/2em 2em;box-shadow:0 0 0 1px silver}.picker_alpha .picker_selector,.picker_sample .picker_selector{background:none}.picker_editor input{font-family:monospace;padding:.2em .4em}.picker_sample::before{content:"";position:absolute;display:block;width:100%;height:100%;background:currentColor}.picker_arrow{position:absolute;z-index:-1}.picker_wrapper.popup{position:absolute;z-index:2;margin:1.5em}.picker_wrapper.popup,.picker_wrapper.popup .picker_arrow::before,.picker_wrapper.popup .picker_arrow::after{background:#f2f2f2;box-shadow:0 0 10px 1px rgba(0,0,0,.4)}.picker_wrapper.popup .picker_arrow{width:3em;height:3em;margin:0}.picker_wrapper.popup .picker_arrow::before,.picker_wrapper.popup .picker_arrow::after{content:"";display:block;position:absolute;top:0;left:0;z-index:-99}.picker_wrapper.popup .picker_arrow::before{width:100%;height:100%;-webkit-transform:skew(45deg);transform:skew(45deg);-webkit-transform-origin:0 100%;transform-origin:0 100%}.picker_wrapper.popup .picker_arrow::after{width:150%;height:150%;box-shadow:none}.popup.popup_top{bottom:100%;left:0}.popup.popup_top .picker_arrow{bottom:0;left:0;-webkit-transform:rotate(-90deg);transform:rotate(-90deg)}.popup.popup_bottom{top:100%;left:0}.popup.popup_bottom .picker_arrow{top:0;left:0;-webkit-transform:rotate(90deg) scale(1, -1);transform:rotate(90deg) scale(1, -1)}.popup.popup_left{top:0;right:100%}.popup.popup_left .picker_arrow{top:0;right:0;-webkit-transform:scale(-1, 1);transform:scale(-1, 1)}.popup.popup_right{top:0;left:100%}.popup.popup_right .picker_arrow{top:0;left:0}',document.documentElement.firstElementChild.appendChild(Cu),ku.StyleElement=Cu;const Au={chrX:"rgb(204, 153, 0)",chrY:"rgb(153, 204, 0",chrUn:"rgb(50, 50, 50)",chr1:"rgb(80, 80, 255)",chrI:"rgb(139, 155, 187)",chr2:"rgb(206, 61, 50)",chrII:"rgb(206, 61, 50)",chr2a:"rgb(216, 71, 60)",chr2b:"rgb(226, 81, 70)",chr3:"rgb(116, 155, 88)",chrIII:"rgb(116, 155, 88)",chr4:"rgb(240, 230, 133)",chrIV:"rgb(240, 230, 133)",chr5:"rgb(70, 105, 131)",chr6:"rgb(186, 99, 56)",chr7:"rgb(93, 177, 221)",chr8:"rgb(128, 34, 104)",chr9:"rgb(107, 215, 107)",chr10:"rgb(213, 149, 167)",chr11:"rgb(146, 72, 34)",chr12:"rgb(131, 123, 141)",chr13:"rgb(199, 81, 39)",chr14:"rgb(213, 143, 92)",chr15:"rgb(122, 101, 165)",chr16:"rgb(228, 175, 105)",chr17:"rgb(59, 27, 83)",chr18:"rgb(205, 222, 183)",chr19:"rgb(97, 42, 121)",chr20:"rgb(174, 31, 99)",chr21:"rgb(231, 199, 111)",chr22:"rgb(90, 101, 94)",chr23:"rgb(204, 153, 0)",chr24:"rgb(153, 204, 0)",chr25:"rgb(51, 204, 0)",chr26:"rgb(0, 204, 51)",chr27:"rgb(0, 204, 153)",chr28:"rgb(0, 153, 204)",chr29:"rgb(10, 71, 255)",chr30:"rgb(71, 117, 255)",chr31:"rgb(255, 194, 10)",chr32:"rgb(255, 209, 71)",chr33:"rgb(153, 0, 51)",chr34:"rgb(153, 26, 0)",chr35:"rgb(153, 102, 0)",chr36:"rgb(128, 153, 0)",chr37:"rgb(51, 153, 0)",chr38:"rgb(0, 153, 26)",chr39:"rgb(0, 153, 102)",chr40:"rgb(0, 128, 153)",chr41:"rgb(0, 51, 153)",chr42:"rgb(26, 0, 153)",chr43:"rgb(102, 0, 153)",chr44:"rgb(153, 0, 128)",chr45:"rgb(214, 0, 71)",chr46:"rgb(255, 20, 99)",chr47:"rgb(0, 214, 143)",chr48:"rgb(20, 255, 177)"};class Eu{constructor(e){this.tracks=[],this.chordSets=[]}addChordSet(e){this.chordSets=this.chordSets.filter((t=>t.name!==e.name)),this.chordSets.push(e);let t=this.tracks.find((t=>e.trackName===t.name));t&&(t.chordSets=t.chordSets.filter((t=>t.name!==e.name)),t.chordSets.push(e)),t||(t=new Tu(e),this.tracks.push(t))}clearChords(){this.tracks=[],this.chordSets=[]}getTrack(e){return this.tracks.find((t=>e===t.name))}getChordSet(e){return this.chordSets.find((t=>e===t.name))}}class Tu{constructor(e){this.name=e.trackName,this.color=e.trackColor,this.visible=!0,this.chordSets=[e],this.id=("0000"+(Math.random()*Math.pow(36,4)<<0).toString(36)).slice(-4)}get chords(){if(1===this.chordSets.length)return this.chordSets[0].chords;const e=[];for(let t of this.chordSets)for(let i of t.chords)e.push(i);return e}}const Mu=Math.exp(5);class Ru{static isInstalled(){return void 0!==window.JBrowseReactCircularGenomeView&&void 0!==window.React&&void 0!==window.ReactDOM}constructor(e,t){if(t=t||{},this.config=t,Ru.isInstalled()){this.parent=e,this.groupByTrack=!0===t.groupByTrack,this.chordManager=new Eu(t);const i=document.createElement("div");i.className="igv-circview-container",e.appendChild(i),this.createControls(i),this.resetControlPanel();const n=document.createElement("div");n.className="igv-circview-circular-genome-view",i.appendChild(n),this.container=n,t.assembly&&this.setAssembly(t.assembly),this.width=t.width||500,this.height=t.height||500,this.setSize(this.width,this.height)}else console.error("JBrowse circular view is not installed")}createControls(e){const t=document.createElement("div");t.className="igv-circview-toolbar",e.appendChild(t),this.toolbar=t;const i=document.createElement("div");i.className="igv-circview-track-panel",e.appendChild(i),this.controlPanel=i,this.controlPanel.style.display="none";const n=document.createElement("div");n.className="igv-circview-toolbar-button-container",this.toolbar.appendChild(n),this.showControlsButton=document.createElement("div"),this.showControlsButton.className="igv-circview-button",n.appendChild(this.showControlsButton),this.showControlsButton.innerText="none"===this.controlPanel.style.display?"Show Controls":"Hide Controls",this.showControlsButton.addEventListener("click",(e=>{this.controlPanel.querySelectorAll("div").length>0&&("none"===this.controlPanel.style.display?(this.controlPanel.style.display="flex",e.target.innerText="Hide Controls"):(this.controlPanel.style.display="none",e.target.innerText="Show Controls"))}));let r=document.createElement("div");r.className="igv-circview-button",n.appendChild(r),r.innerText="Clear All",r.addEventListener("click",(()=>{this.clearChords()})),!1!==this.config.showCloseButton&&(r=document.createElement("div"),r.className="igv-circview-button",n.appendChild(r),r.innerText="Close",r.addEventListener("click",(()=>{this.visible=!1})))}resetControlPanel(){this.controlPanel.innerHTML="",this.controlPanel.appendChild(this.createGroupByCB());const e=this.groupByTrack?this.chordManager.tracks:this.chordManager.chordSets;for(let t of e)this.addToControlPanel(t)}createGroupByCB(){const e=document.createElement("input");e.type="checkbox",e.id="groupByCB",e.style.width="1.4em",e.style.height="1.4em",e.checked=this.groupByTrack,e.onclick=e=>{this.groupByTrack=e.target.checked,this.resetControlPanel(),this.render()};const t=document.createElement("label");t.for="groupByCB",t.innerText="Group by track",t.style.color="black",t.style.paddingLeft="10px";const i=document.createElement("div");return i.style.width="100%",i.style.paddingTop="5px",i.style.paddingBottom="5px",i.style.background="rgb(216, 230, 234)",i.appendChild(e),i.appendChild(t),i}addToControlPanel(e){const t=document.createElement("div");this.controlPanel.appendChild(t);const i=document.createElement("div");i.className="igv-circview-button",t.appendChild(i),i.innerText=!0===e.visible?"Hide":"Show",i.addEventListener("click",(t=>{!0===e.visible?(this.hideChordSet(e.name),t.target.innerText="Show"):(this.showChordSet(e.name),t.target.innerText="Hide")}));const n=document.createElement("input"),r=e=>200*Math.log(e*Mu),s=document.createElement("div");s.className="igv-circview-button",s.innerHTML="&nbsp;&nbsp;&nbsp;&nbsp;",t.appendChild(s),s.style.backgroundColor=Lu(e.color,1);const o={parent:s,popup:"right",editorFormat:"rgb",color:e.color,onChange:({rgbaString:t})=>{s.style.backgroundColor=Lu(t,1),this.setColor(e.name,t),n.value=r(Iu(e.color))}},a=new ku(o);n.setAttribute("title","Adjust transparency of arcs"),n.type="range",n.style.width="100px",n.style.marginRight="10px",n.setAttribute("class","range"),n.setAttribute("min","0"),n.setAttribute("max","1000"),n.value=r(Iu(e.color)),n.oninput=()=>{const t=(i=n.value,Math.exp(i/200)/Mu);var i;this.setColor(e.name,Lu(e.color,t)),a.setColor(e.color)},t.appendChild(n);const l=document.createElement("div");l.style.color="black",t.appendChild(l),l.innerText=l.title=e.name}setAssembly(e){const t=this.genomeId||Bu();if(this.genomeId===t)return;this.chordManager.clearChords(),this.genomeId=t,this.chrNames=new Set(e.chromosomes.map((e=>Nu(e.name))));const i=[],n=[];for(let t of e.chromosomes){const e=Nu(t.name);n.push(t.color||Su(e)),i.push({refName:e,uniqueId:e,start:0,end:t.bpLength})}this.assembly={name:e.name,sequence:{trackId:t,type:"ReferenceSequenceTrack",adapter:{type:"FromConfigSequenceAdapter",features:i}},refNameColors:n},this.render()}addChords(e,t={}){const i=t.name||t.track||"*",n=i.split(" ")[0].replaceAll("%20"," "),r={name:i.replaceAll("%20"," "),trackName:n,chords:e,color:t.color||"black",trackColor:t.trackColor||t.color||"black",visible:!0,id:t.id||Bu()};this.chordManager.addChordSet(r),this.resetControlPanel(),this.render()}setSize(e,t){if(t=t||e,this.width=e,this.height=t,this.viewState){const i=this.viewState.session.view;i.setWidth(e),i.setHeight(t),i.setBpPerPx(i.minBpPerPx)}}getSize(){return Math.min(this.width,this.height)}clearChords(){this.chordManager.clearChords(),this.resetControlPanel(),this.render()}clearSelection(){this.viewState.pluginManager.rootModel.session.clearSelection()}show(){this.parent.style.display="block"}hide(){this.parent.style.display="none"}get visible(){return"none"!==this.parent.style.display}set visible(e){this.parent.style.display=e?"block":"none"}hideChordSet(e){let t=this.getChordSet(e);t?(t.visible=!1,this.render()):console.warn(`No track with name: ${name}`)}showChordSet(e){let t=this.getChordSet(e);t?(t.visible=!0,this.render()):console.warn(`No track with name: ${e}`)}deleteTrack(e){let t=this.tracks.findIndex((t=>e===t.name));t>=0&&this.tracks.splice(t,1),this.render()}getChordSet(e){return this.groupByTrack?this.chordManager.getTrack(e):this.chordManager.getChordSet(e)}setColor(e,t){const i=this.getChordSet(e);if(i){i.color=t;const e=i.id;for(let i of this.viewState.config.tracks)if(e===i.trackId){i.displays[0].renderer.strokeColor.set(t);break}}}render(){const{createViewState:e,JBrowseCircularGenomeView:t}=JBrowseReactCircularGenomeView;ReactDOM.unmountComponentAtNode(this.container);const i=(this.groupByTrack?this.chordManager.tracks:this.chordManager.chordSets).filter((e=>e.visible)),n=[],r=[];for(let e of i)n.push({trackId:e.id,name:e.name,assemblyNames:["forIGV"],type:"VariantTrack",adapter:{type:"FromConfigAdapter",features:e.chords}}),r.push(e.color);this.viewState=e({assembly:this.assembly,tracks:n});for(let e=0;e<i.length;e++)this.viewState.config.tracks[e].displays[0].renderer.strokeColor.set(r[e]);this.element=React.createElement(t,{viewState:this.viewState}),this.setSize(this.width,this.height),ReactDOM.render(this.element,this.container);const s=this.config.onChordClick||Fu;for(let e=0;e<i.length;e++)this.viewState.session.view.showTrack(this.viewState.config.tracks[e].trackId),s&&(this.viewState.pluginManager.jexl.addFunction("onChordClick",s),this.viewState.config.tracks[e].displays[0].onChordClick.set("jexl:onChordClick(feature, track, pluginManager)"))}}function Lu(e,t){const[i,n,r,s]=e.split(",");return`${i},${n},${r},${t})`}function Iu(e){return e.startsWith("rgba(")?Number(e.split(",")[3].replace(")","")):1}function Nu(e){return e.startsWith("chr")?e.substring(3):e}function Fu(e,t,i){console.log(e)}function Bu(){return("0000"+(Math.random()*Math.pow(36,4)<<0).toString(36)).slice(-4)}if("undefined"!=typeof document){function Qw(e){for(let t of document.styleSheets)if(t=t.href?t.href.replace(/^.*[\\\/]/,""):"",t===e)return!0;return!1}Qw("circular-view.css")||function(){const e=document.createElement("style");e.setAttribute("type","text/css"),e.innerHTML='.igv-circview-container {\n  width: fit-content;\n  height: fit-content;\n  box-sizing: content-box;\n  color: dimgray;\n  font-family: "Open Sans", sans-serif;\n  font-size: 12px;\n  background-color: white;\n  border-color: dimgray;\n  border-style: solid;\n  border-width: thin;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n}\n\n.igv-circview-toolbar {\n  position: relative;\n  width: 100%;\n  height: 32px;\n  background-color: lightgrey;\n  border-bottom-style: solid;\n  border-bottom-color: dimgray;\n  border-bottom-width: thin;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n}\n\n.igv-circview-toolbar-button-container {\n  height: 100%;\n  width: fit-content;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-circview-toolbar-button-container > div {\n  margin: 4px;\n}\n\n.igv-circview-track-panel {\n  z-index: 1024;\n  position: absolute;\n  top: 33px;\n  left: 0;\n  width: 100%;\n  height: fit-content;\n  border-bottom-style: solid;\n  border-bottom-color: dimgray;\n  border-bottom-width: thin;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n}\n.igv-circview-track-panel > div {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-circview-track-panel > div > div {\n  margin: 4px;\n}\n\n.igv-circview-swatch-button {\n  cursor: pointer;\n  padding: 5px;\n  width: 8px;\n  height: 8px;\n  border: 1px solid #8d8b8b;\n  border-radius: 16px;\n}\n\n.igv-circview-button {\n  cursor: pointer;\n  padding: 5px;\n  color: #444;\n  vertical-align: middle;\n  text-align: center;\n  font-family: "Open Sans", sans-serif;\n  font-size: 12px;\n  border: 1px solid #8d8b8b;\n  border-radius: 4px;\n  background: #efefef;\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.2);\n}\n\n.igv-circview-button:hover {\n  background: #efefef;\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.6);\n}\n\n.igv-circview-button:active {\n  color: #007bff;\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.6);\n}\n\n/*# sourceMappingURL=circular-view.css.map */\n',document.head.insertBefore(e,document.head.childNodes[document.head.childNodes.length-1])}()}const Ou=e=>e.startsWith("chr")?e.substring(3):e;function Du(e){const t=[],i=[];for(let n of e.wgChromosomeNames){const r=e.getChromosome(n);i.push(uf(r.name)),t.push({name:r.name,bpLength:r.bpLength})}return t}function Pu(e,t,i,n){const r=t.color||"rgb(0,0,255)",s=Oo.addAlpha("all"===i.chr?r:uf(i.chr),n),o=Oo.addAlpha(r,n),a=t.name.replaceAll(" ","%20"),l="all"===i.chr?a:`${a}  ${i.chr}:${i.start}-${i.end}`;t.browser.circularView.addChords(e,{track:l,color:s,trackColor:o}),t.browser.circularViewVisible||(t.browser.circularViewVisible=!0)}class zu{constructor(e,{minTLENPercentile:t,maxTLENPercentile:i}){this.totalCount=0,this.frCount=0,this.rfCount=0,this.ffCount=0,this.sumF=0,this.sumF2=0,this.lp=void 0===t?.1:t,this.up=void 0===i?99.5:i,this.isizes=[],this.compute(e)}compute(e){for(let n of e)if(n.isProperPair()){var t=Math.abs(n.fragmentLength);this.sumF+=t,this.sumF2+=t*t,this.isizes.push(t);var i=n.pairOrientation;if("string"==typeof i&&4===i.length)switch(""+i.charAt(0)+i.charAt(2)){case"FF":case"RR":this.ffCount++;break;case"FR":this.frCount++;break;case"RF":this.rfCount++}this.totalCount++}this.ffCount/this.totalCount>.9?this.orienation="ff":this.frCount/this.totalCount>.9?this.orienation="fr":this.rfCount/this.totalCount>.9&&(this.orienation="rf"),this.minTLEN=0===this.lp?0:Hu(this.isizes,this.lp),this.maxTLEN=Hu(this.isizes,this.up)}}function Hu(e,t){if(0!==e.length){var i=Math.floor(e.length*(t/100));return e.sort((function(e,t){return e-t})),e[i]}}const Uu={getTissueInfo:function(e,t){let i=(t=t||"https://gtexportal.org/rest/v1")+"/dataset/tissueInfo?datasetId="+(e=e||"gtex_v8");return ea.loadJson(i,{})},trackConfiguration:function(e,t){return{type:"eqtl",sourceType:"gtex-ws",url:(t=t||"https://gtexportal.org/rest/v1")+"/association/singleTissueEqtlByLocation",tissueSiteDetailId:e.tissueSiteDetailId,name:e.tissueSiteDetailId.split("_").join(" "),visibilityWindow:25e4}}};function Vu(e,t,i){let n=(e.start-t)/i,r=(e.end-t)/i,s=r-n;return s<3&&(s=3,n-=1.5),{px:n,px1:r,pw:s}}function qu(e,t,i,n,r,s){try{r.save(),r.fillStyle=this.color,r.strokeStyle=this.color;const n=this.getColorForFeature(e);let o,a;r.fillStyle=n,r.strokeStyle=n,"SQUISHED"===this.displayMode&&void 0!==e.row?(o=this.featureHeight/2,a=this.margin+this.squishedRowHeight*e.row):"EXPANDED"===this.displayMode&&void 0!==e.row?(o=this.featureHeight,a=this.margin+this.expandedRowHeight*e.row):(o=this.featureHeight,a=this.margin);const l=s.pixelWidth,h=a+o/2,c=o/2,d=h-c/2,u=e.exons?e.exons.length:0,f=Vu(e,t,i),p=this.arrowSpacing,g="+"===e.strand?1:"-"===e.strand?-1:0;if(0===u){const e=Math.max(0,f.px),t=Math.min(l,f.px1),i=t-e;if(r.fillRect(e,a,i,o),0!==g){r.fillStyle="white",r.strokeStyle="white";for(let i=e+p/2;i<t;i+=p)va.strokeLine(r,i-2*g,h-2,i,h),va.strokeLine(r,i-2*g,h+2,i,h);r.fillStyle=n,r.strokeStyle=n}}else{va.strokeLine(r,f.px+1,h,f.px1-1,h);const s=Math.max(0,f.px)+p/2,m=Math.min(l,f.px1);for(let e=s;e<m;e+=p)va.strokeLine(r,e-2*g,h-2,e,h),va.strokeLine(r,e-2*g,h+2,e,h);for(let s=0;s<u;s++){const u=e.exons[s];let f,m=Math.round((u.start-t)/i),b=Math.round((u.end-t)/i),w=Math.max(1,b-m);if(!(m+w<0)){if(m>l)break;if(u.utr)r.fillRect(m,d,w,c);else if(u.cdStart&&(f=Math.round((u.cdStart-t)/i),r.fillRect(m,d,f-m,c),w-=f-m,m=f),u.cdEnd&&(f=Math.round((u.cdEnd-t)/i),r.fillRect(f,d,b-f,c),w-=b-f,b=f),w=Math.max(w,1),r.fillRect(m,a,w,o),w>p+5&&0!==g){r.fillStyle="white",r.strokeStyle="white";for(let e=m+p/2;e<b;e+=p)va.strokeLine(r,e-2*g,h-2,e,h),va.strokeLine(r,e-2*g,h+2,e,h);r.fillStyle=n,r.strokeStyle=n}}}}s.drawLabel&&"SQUISHED"!==this.displayMode&&ju.call(this,r,e,f.px,f.px1,a,s.referenceFrame,s)}finally{r.restore()}}function ju(e,t,i,n,r,s,o){try{e.save();let a=t.name;if(void 0===a&&t.gene&&(a=t.gene.name),void 0===a&&(a=t.id||t.ID),!a||"."===a)return;let l=o.pixelXOffset||0;const h=Math.max(i,-l);let c,d=(h+Math.min(n,-l+o.viewportWidth))/2;"COLLAPSED"===this.displayMode&&"SLANT"===this.labelDisplayMode&&(c={rotate:{angle:45}});const u=function(e,t){return t?e+20:e+25}(r,c);let f,p=this.getColorForFeature(t),g=!1;s.selection&&Uu.gtexLoaded&&(g=!0,f=s.selection.colorForGene(a));const m={textAlign:"SLANT"===this.labelDisplayMode?void 0:"center",fillStyle:f||p,strokeStyle:f||p},b=e.measureText(a),w=d-b.width/2,v=d+b.width/2,y=o.rowLastLabelX[t.row]||-Number.MAX_SAFE_INTEGER;(o.labelAllFeatures||w>y||g)&&(o.rowLastLabelX[t.row]=v,"y"===o.axis?(e.save(),va.labelTransformWithContext(e,d),va.fillText(e,a,d,u,m,c),e.restore()):va.fillText(e,a,d,u,m,c))}finally{e.restore()}}const $u=new Set(["nonsense","missense","stop-loss","frameshift","cds-indel"]),Wu=new Set(["coding-synon"]),Gu=new Set(["splice-3","splice-5"]),Zu=new Set(["untranslated-5","untranslated-3"]);function Qu(e,t,i,n,r){var s,o,a,l,h,c,d=Vu(e,t,i),u=this.margin,f=this.snpColors.length;switch(s="squished"===this.displayMode?this.squishedRowHeight:this.expandedRowHeight,this.colorBy){case"function":l=e.func,c=l.split(","),h=c.map((function(e){return $u.has(e)||Gu.has(e)?f-1:Wu.has(e)?f-2:Zu.has(e)?f-3:0})),o=h.reduce((function(e,t){return Math.max(e,t)}));break;case"class":o="deletion"===(a=e.class)?f-1:"mnp"===a?f-2:"microsatellite"===a||"named"===a?f-3:0}r.fillStyle=this.snpColors[o],r.fillRect(d.px,u,d.pw,s)}function Xu(e,t,i,n,r){const s="EXPANDED"===this.displayMode?this.expandedRowHeight:this.squishedRowHeight;let o=this.margin;"COLLAPSED"!==this.displayMode&&void 0!==e.row&&(o+=e.row*s);const a=o+.5*s,l=a-.5*s,h=a+.5*s,c=Math.round((e.junction_left-t)/i),d=Math.round((e.junction_right-t)/i);r.beginPath(),r.moveTo(c,a),r.bezierCurveTo(c,l,d,l,d,a),r.lineWidth=1+Math.log(e.num_junction_reads)/Math.log(2),r.strokeStyle="blue",r.stroke();const u=e.spanning_frag_coords;for(let e=0;e<u.length;e++){const n=u[e],s=Math.round((n.left-t)/i),o=Math.round((n.right-t)/i);r.beginPath(),r.moveTo(s,a),r.bezierCurveTo(s,h,o,h,o,a),r.lineWidth=1,r.strokeStyle="purple",r.stroke()}}class Yu extends Eh{static defaults={type:"annotation",maxRows:1e3,displayMode:"EXPANDED",margin:10,featureHeight:14,autoHeight:!1,useScore:!1};constructor(e,t){super(e,t)}init(e){super.init(e),this.labelDisplayMode=e.labelDisplayMode,e._featureSource?(this.featureSource=e._featureSource,delete e._featureSource):this.featureSource=e.featureSource?e.featureSource:ad(e,this.browser.genome),"FusionJuncSpan"===e.type?(this.render=e.render||Xu,this.squishedRowHeight=e.squishedRowHeight||50,this.expandedRowHeight=e.expandedRowHeight||50,this.height=e.height||this.margin+2*this.expandedRowHeight):"snp"===e.type?(this.render=e.render||Qu,this.snpColors=["rgb(0,0,0)","rgb(0,0,255)","rgb(0,255,0)","rgb(255,0,0)"],this.colorBy="function",this.expandedRowHeight=e.expandedRowHeight||10,this.squishedRowHeight=e.squishedRowHeight||5,this.height=e.height||30):(this.render=e.render||qu,this.arrowSpacing=30,function(e){e.browser.on&&(e.browser.on("trackdragend",t),e.browser.on("trackremoved",i));function t(){e.trackView&&"SQUISHED"!==e.displayMode&&e.trackView.updateViews()}function i(n){e.browser.un&&e===n&&(e.browser.un("trackdragend",t),e.browser.un("trackremoved",i))}}(this),this.squishedRowHeight=e.squishedRowHeight||15,this.expandedRowHeight=e.expandedRowHeight||30,this.height=e.height||this.margin+2*this.expandedRowHeight,e.colorBy&&(e.colorBy.field&&(e.colorTable=e.colorBy.pallete||e.colorBy.palette,e.colorBy=e.colorBy.field),this.colorBy=e.colorBy,e.colorTable?this.colorTable=new ma(e.colorTable):this.colorTable=new ga("Set1")))}async postInit(){if("function"!=typeof this.featureSource.getHeader||(this.header=await this.featureSource.getHeader(),!this.disposed))return this.header&&this.setTrackProperties(this.header),void 0===this.visibilityWindow&&"function"==typeof this.featureSource.defaultVisibilityWindow&&(this.visibilityWindow=await this.featureSource.defaultVisibilityWindow()),this}get supportsWholeGenome(){return void 0!==this.config.supportsWholeGenome?this.config.supportsWholeGenome:this.featureSource&&"function"==typeof this.featureSource.supportsWholeGenome?this.featureSource.supportsWholeGenome():!(void 0!==this.visibilityWindow||!1!==this.config.indexed&&this.config.indexURL)||void 0}async getFeatures(e,t,i,n){const r=this.visibilityWindow;return this.featureSource.getFeatures({chr:e,start:t,end:i,bpPerPixel:n,visibilityWindow:r})}computePixelHeight(e){if("COLLAPSED"===this.displayMode)return this.margin+this.expandedRowHeight;{let t=0;if(e&&"function"==typeof e.forEach)for(let i of e)i.row&&i.row>t&&(t=i.row);return this.margin+(t+1)*("SQUISHED"===this.displayMode?this.squishedRowHeight:this.expandedRowHeight)}}draw(e){const t=e.features,i=e.context,n=e.bpPerPixel,r=e.bpStart,s=e.pixelWidth,o=e.pixelHeight,a=r+s*n+1;if(this.config.isMergedTrack||va.fillRect(i,0,e.pixelTop,s,o,{fillStyle:"rgb(255, 255, 255)"}),t){const l=[];e.rowLastX=[],e.rowLastLabelX=[];for(let i of t)if(i.start>r&&i.end<a){const t="COLLAPSED"===this.displayMode?0:i.row||0;void 0===l[t]?l[t]=1:l[t]++,e.rowLastX[t]=-Number.MAX_SAFE_INTEGER,e.rowLastLabelX[t]=-Number.MAX_SAFE_INTEGER}const h=s/Math.max(1,Math.max(...l));let c=[];for(let s of t){if(s.end<r)continue;if(s.start>a)break;const t="COLLAPSED"===this.displayMode?0:s.row;e.drawLabel=e.labelAllFeatures||h>10;const l=Math.ceil((s.end-r)/n),d=c[t];if(!d||l>d){this.render.call(this,s,r,n,o,i,e);const a=Math.floor((s.start-r)/n);d&&a-d<=0&&(i.globalAlpha=.5,va.strokeLine(i,a,0,a,o,{strokeStyle:"rgb(255, 255, 255)"}),i.globalAlpha=1),c[t]=l}}}else console.log("No feature list")}clickedFeatures(e){const t=e.y-this.margin,i=super.clickedFeatures(e);let n;switch(this.displayMode){case"SQUISHED":n=Math.floor(t/this.squishedRowHeight);break;case"EXPANDED":n=Math.floor(t/this.expandedRowHeight);break;default:n=void 0}return i.filter((function(e){return void 0===n||void 0===e.row||n===e.row}))}popupData(e,t){void 0===t&&(t=this.clickedFeatures(e));const i=e.genomicLocation,n=[];for(let e of t){const t=e._f||e,r="function"==typeof t.popupData?t.popupData(i):this.extractPopupData(t);if(r){n.length>0&&n.push("<hr/><hr/>");const s=this.infoURL||this.config.infoURL;for(let t of r)if(n.push(t),s&&t.name&&"name"===t.name.toLowerCase()&&t.value&&ji(t.value)&&!t.value.startsWith("<")){const i=s.replace("$$",e.name);t.value=`<a target=_blank href=${i}>${t.value}</a>`}const o="gff"===this.config.format||"gff3"===this.config.format||"gtf"===this.config.format;if(t.exons)for(let e=0;e<t.exons.length;e++){const r=t.exons[e];if(i>=r.start&&i<=r.end){const i=o?r.number:"-"===t.strand?t.exons.length-e:e+1;i&&(n.push("<hr/>"),n.push({name:"Exon Number",value:i}));break}}}}return n}menuItemList(){const e=[];if(this.render===Qu){e.push("<hr/>");for(let t of["function","class"])e.push({object:ft(zi("Color by "+t,t===this.colorBy)),click:()=>{this.colorBy=t,this.trackView.repaintViews()}})}e.push("<hr/>");for(let t of["COLLAPSED","SQUISHED","EXPANDED"]){const i={COLLAPSED:"Collapse",SQUISHED:"Squish",EXPANDED:"Expand"};e.push({object:ft(zi(i[t],t===this.displayMode)),click:()=>{this.displayMode=t,this.config.displayMode=t,this.trackView.checkContentHeight(),this.trackView.repaintViews()}})}return e}contextMenuItemList(e){const t=this.clickedFeatures(e);if(void 0===t||0===t.length)return;t.length>1&&t.sort(((e,t)=>t.end-t.start-(e.end-e.start)));const i=t[0];if(i.end-i.start<=1e6){const e=[{label:"View feature sequence",click:async()=>{let e=await this.browser.genome.getSequence(i.chr,i.start,i.end);e?"-"===i.strand&&(e=Ga(e)):e="Unknown sequence",this.browser.alert.present(e)}}];return Na()&&void 0!==navigator.clipboard&&e.push({label:"Copy feature sequence",click:async()=>{let e=await this.browser.genome.getSequence(i.chr,i.start,i.end);e?"-"===i.strand&&(e=Ga(e)):e="Unknown sequence";try{await navigator.clipboard.writeText(e)}catch(e){console.error(e),this.browser.alert.present(`error copying sequence to clipboard ${e}`)}}}),e.push("<hr/>"),e}}description(){if(Qu===this.render){let e="<html>"+this.name+"<hr/>";return e+="<em>Color By Function:</em><br>",e+='<span style="color:red">Red</span>: Coding-Non-Synonymous, Splice Site<br>',e+='<span style="color:green">Green</span>: Coding-Synonymous<br>',e+='<span style="color:blue">Blue</span>: Untranslated<br>',e+='<span style="color:black">Black</span>: Intron, Locus, Unknown<br><br>',e+="<em>Color By Class:</em><br>",e+='<span style="color:red">Red</span>: Deletion<br>',e+='<span style="color:green">Green</span>: MNP<br>',e+='<span style="color:blue">Blue</span>: Microsatellite, Named<br>',e+='<span style="color:black">Black</span>: Indel, Insertion, SNP',e+="</html>",e}return super.description()}getColorForFeature(e){let t;if(this.altColor&&"-"===e.strand)t="function"==typeof this.altColor?this.altColor(e):this.altColor;else if(this.color)t="function"==typeof this.color?this.color(e):this.color;else if(this.colorBy){const i=e.getAttributeValue?e.getAttributeValue(this.colorBy):e[this.colorBy];t=this.colorTable.getColor(i)}else e.color&&(t=e.color);if(t||(t="rgb(0, 0, 150)"),e.alpha&&1!==e.alpha)t=Oo.addAlpha(t,e.alpha);else if(this.useScore&&e.score&&!Number.isNaN(e.score)){const i=function(e,t,i){const n=(t-e)/9,r=Math.floor((i-e)/n);return Math.min(1,.2+.8*r/9)}(this.config.min?this.config.min:this.viewLimitMin?this.viewLimitMin:0,this.config.max?this.config.max:this.viewLimitMax?this.viewLimitMax:1e3,e.score);e.alpha=i,t=Oo.addAlpha(t,i)}return t}dispose(){this.trackView=void 0}}class Ku{constructor(e){this.config=e,this.browser=e.browser,this.columnFormat=e.columnFormat,this.tableRowSelectionList=[],this.tableDOM=_t.div({class:"igv-roi-table"}),e.parent.appendChild(this.tableDOM),this.headerDOM=e,this.tableColumnTitles=this.tableDOM,this.tableRowContainer=this.tableDOM,this.footerDOM=e.gotoButtonHandler}set headerDOM({browser:e,parent:t,headerTitle:i,dismissHandler:n}){const r=_t.div();this.tableDOM.appendChild(r);const s=_t.div();r.appendChild(s),s.innerHTML=i;const o=_t.div();r.appendChild(o),o.appendChild(_i.createIcon("times")),this.boundDismissHandler=function(e){e.stopPropagation(),n()}.bind(this),o.addEventListener("click",this.boundDismissHandler);const{y:a}=e.root.getBoundingClientRect(),{y:l}=t.getBoundingClientRect(),h=-(l-a);Si(this.tableDOM,r,{minX:0,minY:h}),this.tableDOM.style.display="none",this._headerDOM=r}set tableColumnTitles(e){const t=_t.div({class:"igv-roi-table-column-titles"});e.appendChild(t);for(const{label:e,width:i}of this.columnFormat){const n=_t.div();t.appendChild(n),n.style.width=i,n.innerText=e}this._tableColumnTitlesDOM=t}get tableColumnTitles(){return this._tableColumnTitlesDOM}set tableRowContainer(e){const t=_t.div({class:"igv-roi-table-row-container"});e.appendChild(t),this._tableRowContainerDOM=t}get tableRowContainer(){return this._tableRowContainerDOM}set footerDOM(e){const t=_t.div();this.tableDOM.appendChild(t);const i=_t.div({class:"igv-roi-table-button"});t.appendChild(i),i.id="igv-roi-table-view-button",i.textContent="Go To",i.style.pointerEvents="none",this._footerDOM=t,this.gotoButton=i,this.boundGotoButtonHandler=e.bind(this),this.gotoButton.addEventListener("click",this.boundGotoButtonHandler)}tableRowDOMHelper(e){e.addEventListener("mousedown",(t=>{t.stopPropagation(),e.classList.toggle("igv-roi-table-row-selected"),e.classList.contains("igv-roi-table-row-selected")?e.classList.remove("igv-roi-table-row-hover"):e.classList.add("igv-roi-table-row-hover"),this.setTableRowSelectionState(e.classList.contains("igv-roi-table-row-selected"))})),e.addEventListener("mouseover",(t=>{e.classList.contains("igv-roi-table-row-selected")?e.classList.remove("igv-roi-table-row-hover"):e.classList.add("igv-roi-table-row-hover")})),e.addEventListener("mouseout",(t=>{e.classList.remove("igv-roi-table-row-hover")}))}clearTable(){const e=this.tableRowContainer.querySelectorAll(".igv-roi-table-row");for(let t of e)t.remove()}setTableRowSelectionState(e){e?this.tableRowSelectionList.push(1):this.tableRowSelectionList.pop(),this.gotoButton.style.pointerEvents=this.tableRowSelectionList.length>0?"auto":"none"}present(){this.tableDOM.style.left="0px";const{y:e}=this.browser.root.getBoundingClientRect(),{y:t}=this.config.parent.getBoundingClientRect();this.tableDOM.style.top=e-t+"px",this.tableDOM.style.display="flex"}dismiss(){this.tableDOM.style.display="none"}dispose(){this.tableDOM.innerHTML="",this.tableDOM.remove();for(const e of Object.keys(this))this[e]=void 0;document.removeEventListener("click",this.boundDismissHandler)}}class Ju extends Ku{constructor(e){super(Object.assign({width:"1024px"},e)),this.descriptionDOM=e}set descriptionDOM(e){if(e.description){let t;t=_t.div({class:"igv-roi-table-description"}),this.tableDOM.insertBefore(t,this.tableColumnTitles),t.style.height="auto",t.innerHTML="BLAT result for query sequence:",t=_t.div({class:"igv-roi-table-description"}),this.tableDOM.insertBefore(t,this.tableColumnTitles),t.style.height="auto",t.style.maxHeight="128px",t.innerHTML=e.description,t=_t.div({class:"igv-roi-table-goto-explainer"}),this.tableDOM.insertBefore(t,this.tableColumnTitles),t.innerHTML="Select one or more rows and click Go To to view the regions"}}tableRowDOM(e){const t=_t.div({class:"igv-roi-table-row"}),i=e.map((e=>isFinite(e)?$i(e):e));for(let e=0;e<i.length;e++){const n=_t.div();t.appendChild(n);const r=this.columnFormat[e];n.style.width=r.width||"fit-content",n.innerText=i[e]}return this.tableRowDOMHelper(t),t}renderTable(e){if(Array.from(this.tableRowContainer.querySelectorAll(".igv-roi-table-row")).forEach((e=>e.remove())),e.length>0)for(let t of e){const e=this.tableRowDOM(t);this.tableRowContainer.appendChild(e)}}static getColumnFormatConfiguration(){return[{label:"chr",width:"7%"},{label:"start",width:"12%"},{label:"end",width:"12%"},{label:"strand",width:"5%"},{label:"score",width:"5%"},{label:"match",width:"5%"},{label:"mis-match",width:"7%"},{label:"rep. match",width:"7%"},{label:"N's",width:"3%"},{label:"Q gap count",width:"9%"},{label:"Q gap bases",width:"9%"},{label:"T gap count",width:"9%"},{label:"T gap bases",width:"9%"}]}static gotoButtonHandler(e){e.stopPropagation();const t=this.tableDOM.querySelectorAll(".igv-roi-table-row-selected"),i=[];for(const e of t){const t=[];e.querySelectorAll("div").forEach((e=>t.push(e.innerText)));const[n,r,s]=t;i.push(`${n}:${r}-${s}`)}for(const e of this.tableDOM.querySelectorAll(".igv-roi-table-row"))e.classList.remove("igv-roi-table-row-selected");this.setTableRowSelectionState(!1),this.browser.search(i.join(" "))}}const ef="https://igv.org/services/blatUCSC.php";async function tf({url:e,userSeq:t,db:i}){e=e||ef;const n=await async function(e="",t,i){const n=new URLSearchParams;n.append("userSeq",t),n.append("db",i);const r=await fetch(e,{method:"post",body:n});return r.json()}(e,t,i);n.fields;return n.blat.map(hh)}const nf=25e3;class rf extends Yu{constructor(e,t){super(e,t),this.name||(this.name="Blat Results"),this.sequence=e.sequence,this.table=void 0}openTableView(){if(void 0===this.table){const e=this.config.features.map((e=>[e.chr,e.start+1,e.end,e.strand,e.score,e.matches,e.misMatches,e.repMatches,e.nCount,e.qNumInsert,e.qBaseInsert,e.tNumInsert,e.tBaseInsert])),t={browser:this.browser,parent:this.browser.parent,headerTitle:this.config.title,description:this.sequence,dismissHandler:()=>{this.table.dismiss(),this.table.dispose(),this.table=void 0},columnFormat:Ju.getColumnFormatConfiguration(),gotoButtonHandler:Ju.gotoButtonHandler};this.table=new Ju(t),this.table.renderTable(e)}this.table.present()}menuItemList(){const e=super.menuItemList();return e.push("<hr/>"),e.push({label:"Open table view",click:()=>this.openTableView()}),e}dispose(){super.dispose(),this.table&&this.table.popover.parentElement.removeChild(this.table.popover)}}async function sf({sequence:e,browser:t,name:i,title:n}){if(e.length>nf)return void t.alert.present(`Sequence size exceeds maximum allowed length (${e.length} > 25000)`);const r=t.genome.id,s=t.config.blatServerURL;try{const o={type:"blat",name:i||"blat results",title:n||"blat results",sequence:e,altColor:"rgb(176, 176, 236)",color:"rgb(236, 176, 176)",features:await tf({url:s,userSeq:e,db:r})};(await t.loadTrack(o)).openTableView()}catch(e){t.alert.present(`Error performing blat search:  ${e}`)}}const of="rgb(185, 185, 185)";class af extends Eh{static defaults={alleleFreqThreshold:.2,visibilityWindow:3e4,showCoverage:!0,showAlignments:!0,viewAsPairs:!1,pairsSupported:!0,showSoftClips:!1,showAllBases:!1,showInsertions:!0,showMismatches:!0,height:300,coverageTrackHeight:50};constructor(e,t){super(e,t)}init(e){this.type="alignment",this.featureSource=new ou(e,this.browser),this.coverageTrack=new lf(e,this),this.alignmentTrack=new hf(e,this),super.init(e),this.alignmentTrack.setTop(this.coverageTrack,this.showCoverage),this.showAlignments||(this._height=this.coverageTrackHeight),e.sort&&(Array.isArray(e.sort)?this.assignSort(e.sort[0]):this.assignSort(e.sort))}set height(e){this._height=e,this.showAlignments&&(this.alignmentTrack.height=this.showCoverage?e-this.coverageTrackHeight:e)}get height(){return this._height}get minTemplateLength(){const e=void 0!==this.config.minTLEN?this.config.minTLEN:this.config.minFragmentLength;return void 0!==e?e:this._pairedEndStats?this._pairedEndStats.minTLEN:0}get maxTemplateLength(){const e=void 0!==this.config.maxTLEN?this.config.maxTLEN:this.config.maxFragmentLength;return void 0!==e?e:this._pairedEndStats?this._pairedEndStats.maxTLEN:1e3}sort(e){e=this.assignSort(e);for(let t of this.trackView.viewports)if(t.containsPosition(e.chr,e.position)){const i=t.cachedFeatures;i&&(i.sortRows(e),t.repaint())}}assignSort(e){if(e.locus){const t=function(e){const t=e.split(":"),i=t[1].split("-"),n={chr:t[0],start:Number.parseInt(i[0].replace(/,/g,""))-1};return i.length>1?n.end=Number.parseInt(i[1].replace(/,/g,"")):n.end=n.start+1,n}(e.locus);e.chr=t.chr,e.position=t.start}else e.position--;return e.direction="ASC"===e.direction||!0===e.direction,e.chr=this.browser.genome.getChromosomeName(e.chr),this.sortObject=e,this.sortObject}async getFeatures(e,t,i,n,r){const s=await this.featureSource.getAlignments(e,t,i);if(s.paired&&!this._pairedEndStats&&!this.config.maxFragmentLength){const e=new zu(s.alignments,this.config);e.totalCount>99&&(this._pairedEndStats=e)}s.alignments=void 0;const o=this.sortObject;return o&&o.chr===e&&o.position>=t&&o.position<=i&&s.sortRows(o),s}computePixelHeight(e){return(this.showCoverage?this.coverageTrackHeight:0)+(this.showAlignments?this.alignmentTrack.computePixelHeight(e):0)}draw(e){va.fillRect(e.context,0,e.pixelTop,e.pixelWidth,e.pixelHeight,{fillStyle:"rgb(255, 255, 255)"}),!0===this.showCoverage&&this.coverageTrackHeight>0?(this.trackView.axisCanvas.style.display="block",this.coverageTrack.draw(e)):this.trackView.axisCanvas.style.display="none",!0===this.showAlignments&&(this.alignmentTrack.setTop(this.coverageTrack,this.showCoverage),this.alignmentTrack.draw(e))}paintAxis(e,t,i){this.coverageTrack.paintAxis(e,t,this.coverageTrackHeight)}contextMenuItemList(e){return this.alignmentTrack.contextMenuItemList(e)}popupData(e){return!0===this.showCoverage&&e.y>=this.coverageTrack.top&&e.y<this.coverageTrackHeight?this.coverageTrack.popupData(e):this.alignmentTrack.popupData(e)}clickedFeatures(e){let t;return t=!0===this.showCoverage&&e.y>=this.coverageTrack.top&&e.y<this.coverageTrackHeight?this.coverageTrack.getClickedObject(e):this.alignmentTrack.getClickedObject(e),t?[t]:void 0}hoverText(e){if(!0===this.showCoverage&&e.y>=this.coverageTrack.top&&e.y<this.coverageTrackHeight){const t=this.coverageTrack.getClickedObject(e);if(t)return t.hoverText()}}menuItemList(){let e=[];e=e.concat(Hi.numericDataMenuItems(this.trackView)),e.push("<hr/>");const t=ft('<div class="igv-track-menu-category">');t.text("Color by:"),e.push({name:void 0,object:t,click:void 0,init:void 0});const i=[{key:"strand",label:"read strand"}];this.alignmentTrack.hasPairs&&(i.push({key:"firstOfPairStrand",label:"first-of-pair strand"}),i.push({key:"pairOrientation",label:"pair orientation"}),i.push({key:"tlen",label:"insert size (TLEN)"}),i.push({key:"unexpectedPair",label:"pair orientation & insert size (TLEN)"}));const n="tag"+(this.alignmentTrack.colorByTag?" ("+this.alignmentTrack.colorByTag+")":"");i.push({key:"tag",label:n});for(let t of i){const i=this.alignmentTrack.colorBy===t.key;e.push(this.colorByCB(t,i))}const r=()=>{if(!this.autoHeight){const e=(this.showCoverage?this.coverageTrackHeight:0)+(this.showAlignments?this.alignmentTrack.height:0);this.trackView.setTrackHeight(e)}};e.push("<hr/>"),e.push({object:ft(zi("Show Coverage",this.showCoverage)),click:()=>{this.showCoverage=!this.showCoverage,r(),this.trackView.checkContentHeight(),this.trackView.repaintViews()}}),e.push({object:ft(zi("Show Alignments",this.showAlignments)),click:()=>{this.showAlignments=!this.showAlignments,r(),this.trackView.checkContentHeight(),this.trackView.repaintViews()}}),e.push("<hr/>"),e.push({object:ft(zi("Show all bases",this.showAllBases)),click:()=>{this.showAllBases=!this.showAllBases,this.config.showAllBases=this.showAllBases,this.trackView.repaintViews()}}),e.push("<hr/>"),e.push({object:ft(zi("Show mismatches",this.showMismatches)),click:()=>{this.showMismatches=!this.showMismatches,this.config.showMismatches=this.showMismatches,this.trackView.repaintViews()}}),e.push({object:ft(zi("Show insertions",this.showInsertions)),click:()=>{this.showInsertions=!this.showInsertions,this.config.showInsertions=this.showInsertions,this.getCachedAlignmentContainers(),this.trackView.repaintViews()}}),e.push({object:ft(zi("Show soft clips",this.showSoftClips)),click:()=>{this.showSoftClips=!this.showSoftClips,this.config.showSoftClips=this.showSoftClips,this.featureSource.setShowSoftClips(this.showSoftClips);const e=this.getCachedAlignmentContainers();for(let t of e)t.setShowSoftClips(this.showSoftClips);this.trackView.repaintViews()}}),this.pairsSupported&&this.alignmentTrack.hasPairs&&(e.push("<hr/>"),e.push({object:ft(zi("View as pairs",this.viewAsPairs)),click:()=>{this.viewAsPairs=!this.viewAsPairs,this.config.viewAsPairs=this.viewAsPairs,this.featureSource.setViewAsPairs(this.viewAsPairs);const e=this.getCachedAlignmentContainers();for(let t of e)t.setViewAsPairs(this.viewAsPairs);this.trackView.repaintViews()}})),this.browser.circularView&&(this.alignmentTrack.hasPairs||this.alignmentTrack.hasSupplemental)&&(e.push("<hr/>"),this.alignmentTrack.hasPairs&&e.push({label:"Add discordant pairs to circular view",click:()=>{for(let e of this.trackView.viewports)this.addPairedChordsForViewport(e)}}),this.alignmentTrack.hasSupplemental&&e.push({label:"Add split reads to circular view",click:()=>{for(let e of this.trackView.viewports)this.addSplitChordsForViewport(e)}})),e.push("<hr/>");const s=ft('<div class="igv-track-menu-category">');return s.text("Display mode:"),e.push({name:void 0,object:s,click:void 0,init:void 0}),e.push({object:ft(zi("expand","EXPANDED"===this.alignmentTrack.displayMode)),click:()=>{this.alignmentTrack.displayMode="EXPANDED",this.config.displayMode="EXPANDED",this.trackView.checkContentHeight(),this.trackView.repaintViews()}}),e.push({object:ft(zi("squish","SQUISHED"===this.alignmentTrack.displayMode)),click:()=>{this.alignmentTrack.displayMode="SQUISHED",this.config.displayMode="SQUISHED",this.trackView.checkContentHeight(),this.trackView.repaintViews()}}),e}colorByCB(e,t){return{name:void 0,object:ft(zi(e.label,t)),click:t=>{"tag"!==e.key?e.key===this.alignmentTrack.colorBy?(this.alignmentTrack.colorBy="none",this.config.colorBy="none",this.trackView.repaintViews()):(this.alignmentTrack.colorBy=e.key,this.config.colorBy=e.key,this.trackView.repaintViews()):this.browser.inputDialog.present({label:"Tag Name",value:this.alignmentTrack.colorByTag?this.alignmentTrack.colorByTag:"",callback:e=>{e?(this.alignmentTrack.colorBy="tag",this.alignmentTrack.colorByTag=e,this.alignmentTrack.tagColors||(this.alignmentTrack.tagColors=new ga("Set1"))):(this.alignmentTrack.colorBy="none",this.alignmentTrack.colorByTag=""),this.trackView.repaintViews()}},t)},init:void 0}}getState(){const e=super.getState();return this.sortObject&&(e.sort={chr:this.sortObject.chr,position:this.sortObject.position+1,option:this.sortObject.option,direction:this.sortObject.direction?"ASC":"DESC"}),e}getCachedAlignmentContainers(){return this.trackView.viewports.map((e=>e.cachedFeatures))}get dataRange(){return this.coverageTrack.dataRange}set dataRange(e){this.coverageTrack.dataRange=e}get logScale(){return this.coverageTrack.logScale}set logScale(e){this.coverageTrack.logScale=e}get autoscale(){return this.coverageTrack.autoscale}set autoscale(e){this.coverageTrack.autoscale=e}addPairedChordsForViewport(e){const t=this.maxTemplateLength,i=[],n=e.referenceFrame;for(let r of e.cachedFeatures.allAlignments())r.end>=n.start&&r.start<=n.end&&(r.paired?r.end-r.start>t&&i.push(r):r.mate&&r.mate.chr&&(r.mate.chr!==r.chr||Math.max(r.fragmentLength)>t)&&i.push(r));Pu((e=>{const t=[];for(let i of e)if(i.paired)i.firstAlignment&&i.secondAlignment&&t.push({uniqueId:i.readName,refName:Ou(i.firstAlignment.chr),start:i.firstAlignment.start,end:i.firstAlignment.end,mate:{refName:Ou(i.secondAlignment.chr),start:i.secondAlignment.start,end:i.secondAlignment.end}});else{const e=i.mate;e&&e.chr&&e.position&&t.push({uniqueId:i.readName,refName:Ou(i.chr),start:i.start,end:i.end,mate:{refName:Ou(e.chr),start:e.position-1,end:e.position}})}return t})(i),this,n,.02)}addSplitChordsForViewport(e){const t=[],i=e.referenceFrame;for(let n of e.cachedFeatures.allAlignments()){const e=n.hasTag("SA");n.end>=i.start&&n.start<=i.end&&e&&t.push(n)}Pu((e=>{const t=e=>{const t=Ad(e.tags().SA);let n=0;for(let r of t)r.start!==e.start&&i.push({uniqueId:`${e.readName}_${n++}`,refName:Ou(e.chr),start:e.start,end:e.end,mate:{refName:Ou(r.chr),start:r.start,end:r.start+r.lenOnRef}})},i=[];for(let i of e)i.paired?(t(i.firstAlignment),i.secondAlignment&&t(i.secondAlignment)):t(i);return i})(t),this,i,.02)}}class lf{constructor(e,t){this.parent=t,this.featureSource=t.featureSource,this.paintAxis=au,this.top=0,this.autoscale=e.autoscale||void 0===e.max,this.autoscale||(this.dataRange={min:e.min||0,max:e.max})}get height(){return this.parent.coverageTrackHeight}draw(e){const t=e.pixelTop;e.pixelHeight;const i=this.parent.browser.nucleotideColors;if(t>this.height)return;const n=e.context,r=e.features.coverageMap;let s;r.refSeq&&(s=r.refSeq.toUpperCase());const o=e.bpPerPixel,a=e.bpStart,l=a+e.pixelWidth*o+1;let h;h=this.parent.coverageColor?this.parent.coverageColor:this.parent.color&&"function"!=typeof this.parent.color?Oo.darkenLighten(this.parent.color,-35):"rgb(150, 150, 150)",va.setProperties(n,{fillStyle:h,strokeStyle:h});const c=Math.max(1,Math.ceil(1/o));for(let e=0,t=r.coverage.length;e<t;e++){const t=r.bpStart+e;if(t<a)continue;if(t>l)break;const i=r.coverage[e];if(!i)continue;const s=Math.round(i.total/this.dataRange.max*this.height),h=this.height-s,d=Math.floor((t-a)/o);va.fillRect(n,d,h,c,s)}if(s)for(let e=0,t=r.coverage.length;e<t;e++){const t=r.bpStart+e;if(t<a)continue;if(t>l)break;const h=r.coverage[e];if(!h)continue;const d=h.total/this.dataRange.max*this.height;let u=this.height-d;const f=Math.floor((t-a)/o),p=s[e];if(h.isMismatch(p)){va.setProperties(n,{fillStyle:i[p]}),va.fillRect(n,f,u,c,d);let e=0;for(let t of["A","C","T","G"]){const r=(h["pos"+t]+h["neg"+t])/this.dataRange.max*this.height;u=this.height-r-e,e+=r,va.setProperties(n,{fillStyle:i[t]}),va.fillRect(n,f,u,c,r)}}}}getClickedObject(e){let t=e.viewport.cachedFeatures;if(!t||0===t.length)return;const i=Math.floor(e.genomicLocation),n=t.coverageMap,r=Math.floor(i-n.bpStart);return n.coverage[r]}popupData(e){const t=[],i=this.getClickedObject(e);if(i){const n=Math.floor(e.genomicLocation),r=e.viewport.referenceFrame;t.push(r.chr+":"+$i(1+n)),t.push({name:"Total Count",value:i.total});let s=i.posA+i.negA;s>0&&(s=s.toString()+" ("+Math.round(s/i.total*100)+"%, "+i.posA+"+, "+i.negA+"- )"),t.push({name:"A",value:s}),s=i.posC+i.negC,s>0&&(s=s.toString()+" ("+Math.round(s/i.total*100)+"%, "+i.posC+"+, "+i.negC+"- )"),t.push({name:"C",value:s}),s=i.posG+i.negG,s>0&&(s=s.toString()+" ("+Math.round(s/i.total*100)+"%, "+i.posG+"+, "+i.negG+"- )"),t.push({name:"G",value:s}),s=i.posT+i.negT,s>0&&(s=s.toString()+" ("+Math.round(s/i.total*100)+"%, "+i.posT+"+, "+i.negT+"- )"),t.push({name:"T",value:s}),s=i.posN+i.negN,s>0&&(s=s.toString()+" ("+Math.round(s/i.total*100)+"%, "+i.posN+"+, "+i.negN+"- )"),t.push({name:"N",value:s}),t.push("<HR/>"),t.push({name:"DEL",value:i.del.toString()}),t.push({name:"INS",value:i.ins.toString()})}return t}}class hf{constructor(e,t){this.parent=t,this.browser=t.browser,this.featureSource=t.featureSource,this.top=0===e.coverageTrackHeight?0:e.coverageTrackHeight+5,this.displayMode=e.displayMode||"EXPANDED",this.alignmentRowHeight=e.alignmentRowHeight||14,this.squishedRowHeight=e.squishedRowHeight||3,this.negStrandColor=e.negStrandColor||"rgba(150, 150, 230, 0.75)",this.posStrandColor=e.posStrandColor||"rgba(230, 150, 150, 0.75)",this.insertionColor=e.insertionColor||"rgb(138, 94, 161)",this.insertionTextColor=e.insertionTextColor||"white",this.showInsertionText=void 0!==e.showInsertionText&&!!e.showInsertionText,this.deletionColor=e.deletionColor||"black",this.deletionTextColor=e.deletionTextColor||"black",this.showDeletionText=void 0!==e.showDeletionText&&!!e.showDeletionText,this.skippedColor=e.skippedColor||"rgb(150, 170, 170)",this.pairConnectorColor=e.pairConnectorColor,this.smallTLENColor=e.smallTLENColor||e.smallFragmentLengthColor||"rgb(0, 0, 150)",this.largeTLENColor=e.largeTLENColor||e.largeFragmentLengthColor||"rgb(200, 0, 0)",this.pairOrientation=e.pairOrienation||"fr",this.pairColors={},this.pairColors.RL=e.rlColor||"rgb(0, 150, 0)",this.pairColors.RR=e.rrColor||"rgb(20, 50, 200)",this.pairColors.LL=e.llColor||"rgb(0, 150, 150)",this.colorBy=e.colorBy||"unexpectedPair",this.colorByTag=e.colorByTag?e.colorByTag.toUpperCase():void 0,this.bamColorTag=void 0===e.bamColorTag?"YC":e.bamColorTag,this.hideSmallIndels=e.hideSmallIndels,this.indelSizeThreshold=e.indelSizeThreshold||1,this.hasPairs=!1,this.hasSupplemental=!1}setTop(e,t){this.top=0===e.height||!1===t?0:5+e.height}computePixelHeight(e){if(e.packedAlignmentRows){return(e.hasDownsampledIntervals()?10:0)+("SQUISHED"===this.displayMode?this.squishedRowHeight:this.alignmentRowHeight)*e.packedAlignmentRows.length+5}return 0}draw(e){const t=e.features,i=e.context,n=e.bpPerPixel,r=e.bpStart,s=e.pixelWidth,o=r+s*n+1,a=this.parent.showSoftClips,l=this.parent.showAllBases,h=this.browser.nucleotideColors,c=t.packedAlignmentRows;i.save();let d=t.sequence;d&&(d=d.toUpperCase());let u=0,f=e.pixelTop;this.top&&i.translate(0,this.top);const p=f+e.pixelHeight;t.hasDownsampledIntervals()?(u=10,t.downsampledIntervals.forEach((function(e){var t=(e.start-r)/n,s=(e.end-r)/n;s-t>5&&(t+=1,s-=1),va.fillRect(i,t,2,s-t,3,{fillStyle:"black"})}))):u=0,this.alignmentsYOffset=u;const g="SQUISHED"===this.displayMode?this.squishedRowHeight:this.alignmentRowHeight;if(c){const e=c.length;for(let t=0;t<e;t++){const e=c[t],i=u+g*t,n=g<=4?g:g-2;if(i>p)break;if(!(i+n<f))for(let t of e.alignments)if(this.hasPairs=this.hasPairs||t.isPaired(),this.browser.circularView&&(this.hasSupplemental=this.hasSupplemental||t.hasTag("SA")),!(t.start+t.lengthOnRef<r)){if(t.start>o)break;!0!==t.hidden&&(t instanceof pd?(m.call(this,t,i,n),b.call(this,t.firstAlignment,i,n),t.secondAlignment&&b.call(this,t.secondAlignment,i,n)):b.call(this,t,i,n))}}}function m(e,t,s){var a=this.getConnectorColor(e.firstAlignment),l=(e.connectingStart-r)/n,h=(e.connectingEnd-r)/n,c=t+s/2;e.connectingEnd<r||e.connectingStart>o||(e.mq<=0&&(a=Oo.addAlpha(a,.15)),va.setProperties(i,{fillStyle:a,strokeStyle:a}),va.strokeLine(i,l,c,h,c))}function b(e,c,u){if(e.start+e.lengthOnRef<r||e.start>o)return;const f=a?e.blocks:e.blocks.filter((e=>"S"!==e.type));let p=this.getAlignmentColor(e);const m=p;e.mq<=0&&(p=Oo.addAlpha(p,.15)),va.setProperties(i,{fillStyle:p,strokeStyle:m});const b=[];for(let e=0;e<f.length;e++){const t=f[e];if(!(e!==f.length-1&&f[e+1].start<r)&&(b.push(...w.call(this,t,e)),t.start+t.len>o))break}if(e.gaps){const t=c+u/2;for(let s of e.gaps){const e=(s.start-r)/n,o=(s.start+s.len-r)/n,a=o-e,l=s.len.toString(),h=6*l.length,d=e+a/2,u="D"===s.type?this.deletionColor:this.skippedColor;if(va.strokeLine(i,e,t,o,t,{strokeStyle:u,lineWidth:2}),this.showDeletionText&&s.len>1&&a>=h+8){const e=d-h/2;va.fillRect(i,e-1,c-1,h+2,12,{fillStyle:"white"}),va.fillText(i,l,e,c+10,{font:"normal 10px monospace",fillStyle:this.deletionTextColor})}}}if(e.insertions&&this.parent.showInsertions){let t=-1;for(let s of e.insertions){if(this.hideSmallIndels&&s.len<=this.indelSizeThreshold)continue;if(s.start<r)continue;if(s.start>o)break;const e=s.start-r,a=s.len.toString(),l=2+6*a.length,h=this.showInsertionText&&1!==s.len?Math.round(s.len/n):2,d=Math.max(Math.min(l,h),2),f=e/n-d/2;if(f-t>2){const e={fillStyle:this.insertionColor};va.fillRect(i,f-2,c,d+4,2,e),va.fillRect(i,f,c+2,d,u-4,e),va.fillRect(i,f-2,c+u-2,d+4,2,e),this.showInsertionText&&s.len>1&&h>l&&va.fillText(i,a,f+1,c+10,{font:"normal 10px monospace",fillStyle:this.insertionTextColor}),t=f}}}function w(o,a){const b=[],w=o.start-t.start,v=(o.start-r)/n,y=(o.start+o.len-r)/n,_=Math.max(1,y-v),x=100/n,k=Math.min(g/2,x/6),C="S"===o.type,S=e.mq<=0||this.highlightedAlignmentReadNamed===e.readName||C;let A=m;this.highlightedAlignmentReadNamed===e.readName?A="red":C&&(A="rgb(50,50,50)");const E=!0===e.strand&&a===f.length-1,T=!1===e.strand&&0===a;if(E|T){let e,t;E?(e=[v,y,y+k,y,v,v],t=[c,c,c+u/2,c+u,c+u,c]):T&&(e=[y,v,v-k,v,y,y],t=[c,c,c+u/2,c+u,c+u,c]),va.fillPolygon(i,e,t,{fillStyle:p}),S&&va.strokePolygon(i,e,t,{strokeStyle:A})}else va.fillRect(i,v,c,_,u,{fillStyle:p}),S&&(i.save(),i.strokeStyle=A,i.strokeRect(v,c,_,u),i.restore());if(C||l||this.parent.showMismatches&&d&&e.seq&&"*"!==e.seq){const t=e.seq?e.seq.toUpperCase():void 0,i=e.qual,a=o.seqOffset,f=Math.max(1,1/n);for(let e=0,p=o.len;e<p;e++){const p=(o.start+e-r)/n;if(p+f<0)continue;if(p>s)break;let g=t?t.charAt(a+e):"";const m=w+e>=0?d.charAt(w+e):"";if("="===g&&(g=m),"X"===g||m!==g||C||l){let t;if(!C&&void 0!==i&&i.length>a+e){t=cf(i[a+e],h[g])}else t=h[g];t&&b.push({bbox:{x:p,y:c,width:f,height:u},baseColor:t,readChar:g})}}}return b}b.forEach((({bbox:e,baseColor:t,readChar:r})=>{!function(e,t,i,n,r){var s;if(t<=.1&&i.height>=8){const t=Math.min(10,i.height);e.font=t+"px sans-serif",s=i.x+i.width/2,va.strokeText(e,r,s-e.measureText(r).width/2,t-1+i.y,{strokeStyle:n})}else va.fillRect(e,i.x,i.y,i.width,i.height,{fillStyle:n})}(i,n,e,t,r)}))}i.restore()}popupData(e){const t=this.getClickedObject(e);return t?t.popupData(e.genomicLocation):void 0}contextMenuItemList(e){const t=e.viewport,i=[],n=i=>{const n=this.parent.sortObject,r=!n||n.position!==Math.floor(e.genomicLocation)||!n.direction,s={chr:t.referenceFrame.chr,position:Math.floor(e.genomicLocation),option:i,direction:r};this.parent.sortObject=s,t.cachedFeatures.sortRows(s),t.repaint()};i.push("<b>Sort by...</b>"),i.push({label:"&nbsp; base",click:()=>n("BASE")}),i.push({label:"&nbsp; read strand",click:()=>n("STRAND")}),i.push({label:"&nbsp; insert size",click:()=>n("INSERT_SIZE")}),i.push({label:"&nbsp; gap size",click:()=>n("GAP_SIZE")}),i.push({label:"&nbsp; chromosome of mate",click:()=>n("MATE_CHR")}),i.push({label:"&nbsp; mapping quality",click:()=>n("MQ")}),i.push({label:"&nbsp; read name",click:()=>n("READ_NAME")}),i.push({label:"&nbsp; aligned read length",click:()=>n("ALIGNED_READ_LENGTH")}),i.push({label:"&nbsp; tag",click:()=>{const i=this.parent.sortObject,n=!i||i.position!==Math.floor(e.genomicLocation)||!i.direction,r={label:"Tag Name",value:this.sortByTag?this.sortByTag:"",callback:i=>{if(i){const r={chr:t.referenceFrame.chr,position:Math.floor(e.genomicLocation),option:"TAG",tag:i,direction:n};this.sortByTag=i,this.parent.sortObject=r,t.cachedFeatures.sortRows(r),t.repaint()}}};this.browser.inputDialog.present(r,e.event)}}),i.push("<hr/>");const r=this.getClickedObject(e);if(r){const t=this.parent.showSoftClips,n="function"==typeof r.alignmentContaining?r.alignmentContaining(e.genomicLocation,t):r;if(n){n.isPaired()&&n.isMateMapped()&&i.push({label:"View mate in split screen",click:()=>{if(n.mate){const t=e.viewport.referenceFrame;if(this.browser.genome.getChromosome(n.mate.chr)){this.highlightedAlignmentReadNamed=n.readName;const e=t.end-t.start,i=n.mate.position-e/2,r=n.mate.position+e/2;this.browser.addMultiLocusPanel(n.mate.chr,i,r,t)}else this.browser.alert.present(`Reference does not contain chromosome: ${n.mate.chr}`)}},init:void 0}),i.push({label:"View read sequence",click:()=>{const e=n.seq;e&&"*"!==e?this.browser.alert.present(e):this.browser.alert.present("Read sequence: *")}}),Na()&&i.push({label:"Copy read sequence",click:async()=>{const e=n.seq;try{await navigator.clipboard.writeText(e)}catch(e){console.error(e),this.browser.alert.present(`error copying sequence to clipboard ${e}`)}}});const t=n.seq;if(t&&"*"!=t){t.length<nf&&i.push({label:"BLAT read sequence",click:()=>{const e=n.isNegativeStrand()?Ga(t):t,i=`${n.readName} - blat`,r=`${this.parent.name} - ${i}`;sf({sequence:e,browser:this.browser,name:i,title:r})}});const e=n.softClippedBlocks();e.left&&e.left.len>20&&e.left.len<nf&&i.push({label:"BLAT left soft-clipped sequence",click:()=>{const i=t.substr(e.left.seqOffset,e.left.len),r=n.isNegativeStrand()?Ga(i):i,s=`${n.readName} - blat left clip`,o=`${this.parent.name} - ${s}`;sf({sequence:r,browser:this.browser,name:s,title:o})}}),e.right&&e.right.len>20&&e.right.len<nf&&i.push({label:"BLAT right soft-clipped sequence",click:()=>{const i=t.substr(e.right.seqOffset,e.right.len),r=n.isNegativeStrand()?Ga(i):i,s=`${n.readName} - blat right clip`,o=`${this.parent.name} - ${s}`;sf({sequence:r,browser:this.browser,name:s,title:o})}})}i.push("<hr/>")}}return this.browser.circularView&&(this.hasPairs||this.hasSupplemental)&&(this.hasPairs&&i.push({label:"Add discordant pairs to circular view",click:()=>{this.parent.addPairedChordsForViewport(t)}}),this.hasSupplemental&&i.push({label:"Add split reads to circular view",click:()=>{this.parent.addSplitChordsForViewport(t)}}),i.push("<hr/>")),i}getClickedObject(e){const t=e.viewport,i=e.y,n=e.genomicLocation,r=this.parent.showSoftClips;let s=t.cachedFeatures;if(!s||0===s.length)return;let o=s.packedAlignmentRows,a=s.downsampledIntervals;const l="SQUISHED"===this.displayMode?this.squishedRowHeight:this.alignmentRowHeight;let h=Math.floor((i-this.top-this.alignmentsYOffset)/l);if(h<0){for(let e=0;e<a.length;e++)if(a[e].start<=n&&a[e].end>=n)return a[e]}else if(h<o.length){const e=o[h].alignments.filter((e=>e.containsLocation(n,r)));if(e.length>0)return e[0]}}getConnectorColor(e){if(this.pairConnectorColor)return this.pairConnectorColor;switch(this.colorBy){case"strand":case"firstOfPairStrand":case"pairOrientation":case"tag":return this.parent.color?"function"==typeof this.parent.color?this.parent.color(e):this.parent.color:"rgb(200, 200, 200)";default:return this.getAlignmentColor(e)}}getAlignmentColor(e){let t=of;t=this.parent.color?"function"==typeof this.parent.color?this.parent.color(e):this.parent.color:of;const i=this.colorBy;switch(i){case"strand":t=e.strand?this.posStrandColor:this.negStrandColor;break;case"firstOfPairStrand":e instanceof pd?t=e.firstOfPairStrand()?this.posStrandColor:this.negStrandColor:e.isPaired()&&(e.isFirstOfPair()?t=e.strand?this.posStrandColor:this.negStrandColor:e.isSecondOfPair()?t=e.strand?this.negStrandColor:this.posStrandColor:console.error("ERROR. Paired alignments are either first or second."));break;case"unexpectedPair":case"pairOrientation":if(this.pairOrientation&&e.pairOrientation){const i=df[this.pairOrientation];if(i){const n=this.pairColors[i[e.pairOrientation]];if(n){t=n;break}}}if("pairOrientation"===i)break;case"tlen":case"fragmentLength":e.mate&&e.isMateMapped()&&(e.mate.chr!==e.chr?t=uf(e.mate.chr):this.parent.minTemplateLength&&Math.abs(e.fragmentLength)<this.parent.minTemplateLength?t=this.smallTLENColor:this.parent.maxTemplateLength&&Math.abs(e.fragmentLength)>this.parent.maxTemplateLength&&(t=this.largeTLENColor));break;case"tag":const n=e.tags()[this.colorByTag];void 0!==n&&(this.bamColorTag===this.colorByTag?t="rgb("+n+")":(this.tagColors||(this.tagColors=new ga("Set1")),t=this.tagColors.getColor(n)))}return t}}function cf(e,t){let i;return i=e<5?.1:Math.max(.1,Math.min(1,.1+.9*(e-5)/15)),i=Math.round(10*i)/10,i<1&&(t=Oo.addAlpha(t,i)),t}const df={fr:{F1R2:"LR",F2R1:"LR",F1F2:"LL",F2F1:"LL",R1R2:"RR",R2R1:"RR",R1F2:"RL",R2F1:"RL"},rf:{R1F2:"LR",R2F1:"LR",R1R2:"LL",R2R1:"LL",F1F2:"RR",F2F1:"RR",F1R2:"RL",F2R1:"RL"},ff:{F2F1:"LR",R1R2:"LR",F2R1:"LL",R1F2:"LL",R2F1:"RR",F1R2:"RR",R2R1:"RL",F1F2:"RL"}};function uf(e){if(ff[e])return ff[e];if(ff["chr"+e]){const t=ff["chr"+e];return ff[e]=t,t}{const t=Oo.randomRGB(0,255);return ff[e]=t,t}}const ff={chrX:"rgb(204, 153, 0)",chrY:"rgb(153, 204, 0)",chrUn:"rgb(50, 50, 50)",chr1:"rgb(80, 80, 255)",chrI:"rgb(139, 155, 187)",chr2:"rgb(206, 61, 50)",chrII:"rgb(206, 61, 50)",chr2a:"rgb(216, 71, 60)",chr2b:"rgb(226, 81, 70)",chr3:"rgb(116, 155, 88)",chrIII:"rgb(116, 155, 88)",chr4:"rgb(240, 230, 133)",chrIV:"rgb(240, 230, 133)",chr5:"rgb(70, 105, 131)",chr6:"rgb(186, 99, 56)",chr7:"rgb(93, 177, 221)",chr8:"rgb(128, 34, 104)",chr9:"rgb(107, 215, 107)",chr10:"rgb(213, 149, 167)",chr11:"rgb(146, 72, 34)",chr12:"rgb(131, 123, 141)",chr13:"rgb(199, 81, 39)",chr14:"rgb(213, 143, 92)",chr15:"rgb(122, 101, 165)",chr16:"rgb(228, 175, 105)",chr17:"rgb(59, 27, 83)",chr18:"rgb(205, 222, 183)",chr19:"rgb(97, 42, 121)",chr20:"rgb(174, 31, 99)",chr21:"rgb(231, 199, 111)",chr22:"rgb(90, 101, 94)",chr23:"rgb(204, 153, 0)",chr24:"rgb(153, 204, 0)",chr25:"rgb(51, 204, 0)",chr26:"rgb(0, 204, 51)",chr27:"rgb(0, 204, 153)",chr28:"rgb(0, 153, 204)",chr29:"rgb(10, 71, 255)",chr30:"rgb(71, 117, 255)",chr31:"rgb(255, 194, 10)",chr32:"rgb(255, 209, 71)",chr33:"rgb(153, 0, 51)",chr34:"rgb(153, 26, 0)",chr35:"rgb(153, 102, 0)",chr36:"rgb(128, 153, 0)",chr37:"rgb(51, 153, 0)",chr38:"rgb(0, 153, 26)",chr39:"rgb(0, 153, 102)",chr40:"rgb(0, 128, 153)",chr41:"rgb(0, 51, 153)",chr42:"rgb(26, 0, 153)",chr43:"rgb(102, 0, 153)",chr44:"rgb(153, 0, 128)",chr45:"rgb(214, 0, 71)",chr46:"rgb(255, 20, 99)",chr47:"rgb(0, 214, 143)",chr48:"rgb(20, 255, 177)"};let pf,gf;class mf extends Nl{constructor(e,t,i,n){super(e,t,i,n)}get contentDiv(){return this.$viewport.get(0)}initializationHelper(){let e;this.$multiLocusCloseButton=ft("<div>",{class:"igv-multi-locus-close-button"}),this.$viewport.append(this.$multiLocusCloseButton),this.$multiLocusCloseButton.get(0).appendChild(_i.createIcon("times-circle")),this.$multiLocusCloseButton.click((()=>{this.browser.removeMultiLocusPanel(this.referenceFrame)})),this.$rulerLabel=ft("<div>",{class:"igv-multi-locus-ruler-label"}),this.$viewport.append(this.$rulerLabel),e=document.createElement("div"),this.$rulerLabel.append(ft(e)),this.$rulerLabel.get(0).addEventListener("click",(async e=>{e.stopPropagation(),await this.browser.gotoMultilocusPanel(this.referenceFrame)})),this.$tooltip=ft("<div>",{class:"igv-ruler-tooltip"}),this.$tooltip.height(this.$viewport.height()),this.$viewport.append(this.$tooltip),this.$tooltipContent=ft("<div>"),this.$tooltip.append(this.$tooltipContent),this.rulerSweeper=new fd(this,this.$viewport.get(0).parentElement,this.browser,this.referenceFrame),this.attachMouseHandlers(Tl.isWholeGenomeView(this.referenceFrame.chr)),this.$tooltip.hide(),this.dismissLocusLabel()}presentLocusLabel(e){this.$multiLocusCloseButton.show(),this.$rulerLabel.show(),this.$rulerLabel.get(0).style.backgroundColor=uf(this.referenceFrame.chr);const t=this.$rulerLabel.get(0).querySelector("div"),{width:i}=this.$rulerLabel.get(0).getBoundingClientRect();t.innerHTML=`${this.referenceFrame.getMultiLocusLabel(e)}`;const{width:n}=t.getBoundingClientRect();n/i>.5&&(t.innerHTML=`${this.referenceFrame.getMultiLocusLabelBPLengthOnly(e)}`)}dismissLocusLabel(){this.$rulerLabel.hide(),this.$multiLocusCloseButton.hide()}attachMouseHandlers(e){if(this.namespace=`.ruler_track_viewport_${this.browser.referenceFrameList.indexOf(this.referenceFrame)}`,this.$viewport.off(this.namespace),!0===e){const e=this.browser.referenceFrameList.indexOf(this.referenceFrame),t=`click${this.namespace}`;this.$viewport.on(t,(t=>{const{x:i}=_t.translateMouseCoordinates(t,this.$viewport.get(0)),n=Math.round(this.referenceFrame.start+this.referenceFrame.toBP(i));let r;const{chr:s}=this.browser.genome.getChromosomeCoordinate(n);if(1===this.browser.referenceFrameList.length)r=s;else{let t=this.browser.referenceFrameList.map((({locusSearchString:e})=>e));t[e]=s,r=t.join(" ")}this.browser.search(r)})),this.$viewport.get(0).style.cursor="pointer"}else this.$viewport.get(0).style.cursor="default"}mouseMove(e){if(!0===this.browser.cursorGuideVisible){void 0===gf?(gf=this,this.$tooltip.show()):gf.guid!==this.guid?(gf.$tooltip&&gf.$tooltip.hide(),this.$tooltip.show(),gf=this):this.$tooltip.show();if(this.browser.isMultiLocusWholeGenomeView()||Tl.isWholeGenomeView(this.referenceFrame.chr))return void this.$tooltip.hide();const{x:t}=_t.translateMouseCoordinates(e,this.$viewport.get(0)),{start:i,bpPerPixel:n}=this.referenceFrame,r=Math.round(.5+i+Math.max(0,t)*n);this.$tooltipContent.text($i(r));const{width:s}=this.$tooltipContent.get(0).getBoundingClientRect(),{width:o}=this.$viewport.get(0).getBoundingClientRect();this.$tooltip.css({left:`${Io(t,0,o-s)}px`}),clearTimeout(pf),pf=setTimeout((()=>{this.$tooltip&&this.$tooltip.hide()}),1e4)}}startSpinner(){}stopSpinner(){}dispose(){this.rulerSweeper.dispose(),super.dispose()}}class bf extends Nl{constructor(e,t,i,n){super(e,t,i,n)}initializationHelper(){this.canvas=document.createElement("canvas"),this.canvas.className="igv-ideogram-canvas",this.$viewport.append(ft(this.canvas)),this.ideogram_ctx=this.canvas.getContext("2d"),this.addMouseHandlers()}addMouseHandlers(){this.addViewportClickHandler(this.$viewport.get(0))}addViewportClickHandler(e){this.boundClickHandler=function(e){const{xNormalized:t,width:i}=_t.translateMouseCoordinates(e,this.ideogram_ctx.canvas),{bpLength:n}=this.browser.genome.getChromosome(this.referenceFrame.chr),r=this.referenceFrame.bpPerPixel*i/n;let s=t;s-r/2<0&&(s=r/2);s+r/2>1&&(s=1-r/2);const o=Math.round((s-r/2)*n),a=Math.round((s+r/2)*n);this.referenceFrame.start=o,this.referenceFrame.end=a,this.referenceFrame.bpPerPixel=(a-o)/i,this.browser.updateViews(this.referenceFrame,this.browser.trackViews,!0)}.bind(this),e.addEventListener("click",this.boundClickHandler)}setWidth(e){this.$viewport.width(e)}drawSVGWithContext(e,t,i,n,r,s,o){e.saveWithTranslationAndClipRect(n,r,s,t,i,o),this.trackView.track.draw({context:e,referenceFrame:this.referenceFrame,pixelWidth:t,pixelHeight:i}),e.restore()}repaint(){this.draw({referenceFrame:this.referenceFrame})}draw({referenceFrame:e}){va.configureHighDPICanvas(this.ideogram_ctx,this.$viewport.width(),this.$viewport.height()),this.trackView.track.draw({context:this.ideogram_ctx,referenceFrame:e,pixelWidth:this.$viewport.width(),pixelHeight:this.$viewport.height()})}startSpinner(){}stopSpinner(){}}function wf(e,t,i,n){if("ruler"===e.track.type)return new mf(e,t,i,n);if("ideogram"===e.track.id)return new bf(e,t,i,n);return new Nl(e,t,i,n)}const vf={textAlign:"start",textBaseline:"bottom",strokeStyle:"black",fillStyle:"black"};class yf{constructor(e,t,i,n){this.guid=_t.guid(),this.trackView=e,this.browser=e.browser,this.viewport=_t.div({class:"igv-viewport"}),t.appendChild(this.viewport),e.track.height&&(this.viewport.style.height=`${e.track.height}px`),this.canvas=document.createElement("canvas"),this.viewport.appendChild(this.canvas),this.ctx=this.canvas.getContext("2d"),this.trackScrollDelta=0,this.contentTop=0,this.setWidth(n),!1===this.browser.showSampleNames&&this.hide(),this.addMouseHandlers()}checkCanvas(){const e=window.devicePixelRatio,t=this.viewport.clientHeight,i=this.browser.sampleNameViewportWidth;if(this.canvas.width!==i*e||this.canvas.height!==t*e){const n=this.canvas;n.width=i*e,n.height=t*e,n.style.width=`${i}px`,n.style.height=`${t}px`,this.ctx=this.canvas.getContext("2d"),this.ctx.scale(e,e)}}setTop(e){if("function"==typeof this.trackView.track.getSamples){this.contentTop=e;const t=this.trackView.track.getSamples();this.repaint(t)}}setWidth(e){this.viewport.innerWidth=e,this.checkCanvas()}show(){this.viewport.style.display="block"}hide(){this.viewport.style.display="none"}async repaint(e){this.checkCanvas(),this.draw({context:this.ctx,samples:e})}draw({context:e,samples:t}){if(!t||0===t.names.length)return;!function(e,{textAlign:t,textBaseline:i,strokeStyle:n,fillStyle:r},s){const o=Math.min(s,10);e.font=`${o}px sans-serif`,e.textAlign=t,e.textBaseline=i,e.fillStyle=r}(e,vf,t.height);e.clearRect(0,0,e.canvas.width,e.canvas.height),e.fillStyle=function(e){const{r:t,g:i,b:n}=fa[e];return`rgb(${t},${i},${n})`}("lead");const i=this.viewport.getBoundingClientRect().height;let n=(t.yOffset||0)+this.contentTop;for(let r of t.names){if(n>i)break;if(n+t.height>0){const i=r,s=_f(e,i,n,t.height);e.fillText(i,4,s)}n+=t.height}}renderSVGContext(e,{deltaX:t,deltaY:i}){if("function"==typeof this.trackView.track.getSamples){const n=this.trackView.track.getSamples(),r=0,{width:s,height:o}=this.viewport.getBoundingClientRect(),a=`${(this.trackView.track.name||this.trackView.track.id).replace(/\W/g,"")}_sample_names_guid_${_t.guid()}`;e.saveWithTranslationAndClipRect(a,t,i+r,s,o,-r),this.draw({context:e,samples:n}),e.restore()}}addMouseHandlers(){this.addViewportContextMenuHandler(this.viewport)}removeMouseHandlers(){this.removeViewportContextMenuHandler(this.viewport)}addViewportContextMenuHandler(e){this.boundContextMenuHandler=function(e){e.preventDefault(),e.stopPropagation();const t={label:"Name Panel Width",value:this.browser.sampleNameViewportWidth,callback:e=>{this.browser.sampleNameViewportWidth=parseInt(e);for(let{sampleNameViewport:e}of this.browser.trackViews)e.setWidth(this.browser.sampleNameViewportWidth);this.browser.layoutChange()}};this.browser.inputDialog.present(t,e)}.bind(this),e.addEventListener("contextmenu",this.boundContextMenuHandler)}removeViewportContextMenuHandler(e){e.removeEventListener("contextmenu",this.boundContextMenuHandler)}dispose(){this.removeMouseHandlers(),this.viewport.remove()}}function _f(e,t,i,n){return i+n-function(e,t,i){const{actualBoundingBoxAscent:n,actualBoundingBoxDescent:r}=e.measureText(t);return(i-(n+r))/2}(e,t,n)}const xf=function(e){this.popover=_t.div({class:"igv-menu-popup"}),e.appendChild(this.popover);const t=_t.div({class:"igv-menu-popup-header"});this.popover.appendChild(t),ki.attachDialogCloseHandlerWithParent(t,(()=>this.hide())),this.popoverContent=_t.div(),this.popover.appendChild(this.popoverContent),Si(this.popover,t),t.addEventListener("click",(e=>{e.stopPropagation(),e.preventDefault()})),this.hide()};xf.prototype.hide=function(){this.popover.style.display="none"},xf.prototype.presentMenuList=function(e){if(kf(),e.length>0){this.popoverContent.innerHTML="",e=Hi.trackMenuItemListHelper(e,this);for(let t of e){t.init&&t.init();let i=t.object;0===e.indexOf(t)&&i.removeClass("igv-track-menu-border-top"),i.hasClass("igv-track-menu-border-top")||i.hasClass("igv-menu-popup-check-container")||i.is("div")&&i.addClass("igv-menu-popup-shim"),this.popoverContent.appendChild(i.get(0))}this.popover.style.display="flex";const{width:t}=this.popover.getBoundingClientRect();this.popover.style.left=-t+"px",this.popover.style.top="0px"}},xf.prototype.presentTrackContextMenu=function(e,t){this.popoverContent.innerHTML="";const i=(n=t,r=this.popover,n.map((e=>{let t;if("string"==typeof e&&"<hr/>"===e)t=document.createElement("hr");else if("string"==typeof e)t=_t.div({class:"context-menu"}),t.innerHTML=e;else if("Node"==typeof e)t=e;else{if("function"==typeof e.init&&e.init(),"checkbox"===e.type)t=zi("Show all bases",e.value);else if("color"===e.type){const i=new Pi({parent:r.parentElement,width:364});i.configure(void 0,{color:t=>e.click(t)}),t=_t.div({class:"context-menu"}),"string"==typeof e.label&&(t.innerHTML=e.label);const n=e=>{i.show(),_t.hide(r),e.preventDefault(),e.stopPropagation()};t.addEventListener("click",n),t.addEventListener("touchend",n),t.addEventListener("mouseup",(function(e){e.preventDefault(),e.stopPropagation()}))}else t=_t.div({class:"context-menu"}),"string"==typeof e.label&&(t.innerHTML=e.label);if(e.click&&"color"!==e.type){function s(t){e.click(),_t.hide(r),t.preventDefault(),t.stopPropagation()}t.addEventListener("click",s),t.addEventListener("touchend",s),t.addEventListener("mouseup",(function(e){e.preventDefault(),e.stopPropagation()}))}}return{el:t,init:e.init}})));var n,r;for(let{el:e}of i)this.popoverContent.appendChild(e);!function(e,t){t.style.display="flex";const{x:i,y:n}=_t.translateMouseCoordinates(e,t.parentNode),{width:r}=t.getBoundingClientRect(),s=i+r,{width:o}=t.parentNode.getBoundingClientRect();t.style.left=`${s>o?i-(s-o):i}px`,t.style.top=`${n}px`}(e,this.popover)},xf.prototype.dispose=function(){this.popoverContent.innerHTML="",this.popover.innerHTML="",Object.keys(this).forEach((function(e){this[e]=void 0}))};const kf=()=>{const e=document.querySelectorAll(".igv-menu-popup");for(let t=0;t<e.length;t++)e[t].style.display="none"},Cf=new Set(["ruler","ideogram"]),Sf=new Set(["ruler","sequence","ideogram"]);class Af{constructor(e,t,i){this.browser=e,this.track=i,i.trackView=this,this.addDOMToColumnContainer(e,t,e.referenceFrameList)}startSpinner(){this.viewports&&this.viewports.length>0&&this.viewports[0].startSpinner()}stopSpinner(){this.viewports&&this.viewports.length>0&&this.viewports[0].stopSpinner()}addDOMToColumnContainer(e,t,i){this.axis=this.createAxis(e,this.track),this.viewports=[];const n=e.calculateViewportWidth(i.length),r=t.querySelectorAll(".igv-column");for(let e=0;e<r.length;e++){const t=wf(this,r[e],i[e],n);this.viewports.push(t)}this.sampleNameViewport=new yf(this,e.columnContainer.querySelector(".igv-sample-name-column"),void 0,e.sampleNameViewportWidth),this.createTrackScrollbar(e),this.createTrackDragHandle(e),this.createTrackGearPopup(e)}createAxis(e,t){const i=_t.div();if(e.columnContainer.querySelector(".igv-axis-column").appendChild(i),i.style.height=`${t.height}px`,"function"==typeof t.paintAxis){t.dataRange&&i.addEventListener("click",(()=>{e.dataRangeDialog.configure(this),e.dataRangeDialog.present(ft(e.columnContainer))}));const{width:n,height:r}=i.getBoundingClientRect();this.axisCanvas=document.createElement("canvas"),this.axisCanvas.style.width=`${n}px`,this.axisCanvas.style.height=`${r}px`,i.appendChild(this.axisCanvas)}return i}resizeAxisCanvas(e,t){this.axis.style.width=`${e}px`,this.axis.style.height=`${t}px`,"function"==typeof this.track.paintAxis&&(this.axisCanvas.style.width=`${e}px`,this.axisCanvas.style.height=`${t}px`)}removeDOMFromColumnContainer(){this.boundAxisClickHander&&this.removeAxisEventListener(this.axis),this.axis.remove();for(let e of this.viewports)e.$viewport.remove();this.sampleNameViewport.dispose(),this.removeTrackScrollMouseHandlers(),this.outerScroll.remove(),this.removeTrackDragMouseHandlers(),this.dragHandle.remove(),this.removeTrackGearMouseHandlers(),this.gearContainer.remove()}renderSVGContext(e,{deltaX:t,deltaY:i}){!function(e,t,i,n,r){if("function"==typeof t.paintAxis){const{y:s,width:o,height:a}=i.getBoundingClientRect(),l=`${(t.name||t.id).replace(/\W/g,"")}_axis_guid_${_t.guid()}`;e.saveWithTranslationAndClipRect(l,n,s+r,o,a,0),t.paintAxis(e,o,a),e.restore()}}(e,this.track,this.axisCanvas,t,i);const{width:n}=this.axis.getBoundingClientRect(),{y:r}=this.viewports[0].$viewport.get(0).getBoundingClientRect();let s={deltaX:n+t,deltaY:r+i};for(let t of this.viewports){t.renderSVGContext(e,s);const{width:i}=t.$viewport.get(0).getBoundingClientRect();s.deltaX+=i}!0===this.browser.showSampleNames&&this.sampleNameViewport.renderSVGContext(e,s)}dataRange(){return this.track.dataRange?this.track.dataRange:void 0}setDataRange(e,t){void 0!==e&&(this.track.dataRange.min=e),void 0!==t&&(this.track.dataRange.max=t),this.track.autoscale=!1,this.repaintViews()}presentColorPicker(e){if(!1===Sf.has(this.track.type)){const t=[],i=this.track.color||this.track.defaultColor;ji(i)&&t.push(i),this.track.altColor&&ji(this.track.altColor)&&t.push(this.track.altColor);const n=t.map((e=>e.startsWith("#")?e:e.startsWith("rgb(")?Oo.rgbToHex(e):Oo.colorNameToHex(e))),r={color:e=>{this.track.color=e,this.repaintViews()},altColor:e=>{this.track.altColor=e,this.repaintViews()}};this.browser.genericColorPicker.configure(n,r),this.browser.genericColorPicker.setActiveColorHandler(e),this.browser.genericColorPicker.show()}}setTrackHeight(e,t){t||(this.track.minHeight&&(e=Math.max(this.track.minHeight,e)),this.track.maxHeight&&(e=Math.min(this.track.maxHeight,e))),this.track.height=e,this.resizeAxisCanvas(this.axis.clientWidth,this.track.height),"function"==typeof this.track.paintAxis&&this.paintAxis();for(let{$viewport:t}of this.viewports)t.height(e);if(this.sampleNameViewport.viewport.style.height=`${e}px`,"function"!=typeof this.track.computePixelHeight)for(let t of this.viewports)t.setContentHeight(e);this.repaintViews(),!1===Cf.has(this.track.type)&&this.updateScrollbar(),this.dragHandle.style.height=`${e}px`,this.gearContainer.style.height=`${e}px`}updateScrollbar(){const e=this.viewports[0].$viewport.height();this.outerScroll.style.height=`${e}px`;const t=this.maxViewportContentHeight(),i=Math.round(e/t*e);t>e?(this.innerScroll.style.display="block",this.innerScroll.style.height=`${i}px`):this.innerScroll.style.display="none"}moveScroller(e){const t=ft(this.innerScroll).position().top+e,i=Math.min(Math.max(0,t),this.outerScroll.clientHeight-this.innerScroll.clientHeight);ft(this.innerScroll).css("top",`${i}px`);const n=this.maxViewportContentHeight(),r=-Math.round(i*(n/this.viewports[0].$viewport.height()));for(let e of this.viewports)e.setTop(r);this.sampleNameViewport.trackScrollDelta=e,this.sampleNameViewport.setTop(r)}isLoading(){for(let e of this.viewports)if(e.isLoading())return!0}repaintViews(){for(let e of this.viewports)e.isVisible()&&e.repaint();"function"==typeof this.track.paintAxis&&this.paintAxis(),this.repaintSamples()}repaintSamples(){if("function"==typeof this.track.getSamples){const e=this.track.getSamples();this.sampleNameViewport.repaint(e)}}setTrackLabelName(e){this.viewports.forEach((t=>t.setTrackLabel(e)))}resize(e){for(let t of this.viewports)t.setWidth(e)}async updateViews(){if(!this.browser||!this.browser.referenceFrameList)return;const e=this.viewports.filter((e=>e.isVisible()));if(e.forEach((e=>e.shift())),this.browser.dragObject)return;const t=e.filter((e=>e.needsRepaint())).filter((e=>e.checkZoomIn())),i=t.filter((e=>e.needsReload()));for(let e of i)await e.loadFeatures();if(this.disposed)return;if(this.track&&"function"==typeof this.track.variantRowCount&&i.length>0){let e=0;for(let t of this.viewports)t.featureCache&&t.featureCache.features&&(e=Math.max(e,t.featureCache.features.reduce(((e,t)=>Math.max(e,t.row||0)),0)));if(this.track.nVariantRows!==e+1){this.track.variantRowCount(e+1);for(let e of this.viewports)e.checkContentHeight()}}if(this.track.autoscale){let t=[];for(let i of e){const e=i.referenceFrame,n=e.start,r=n+e.toBP(i.getWidth());if(i.featureCache&&i.featureCache.features)if("function"==typeof i.featureCache.features.getMax){const e=i.featureCache.features.getMax(n,r);t.push({value:e})}else{const e=ua(i.featureCache.features,n,r);for(let i of e)t.push(i)}}"function"==typeof this.track.doAutoscale?this.track.dataRange=this.track.doAutoscale(t):this.track.dataRange=Sa(t)}const n=this.track.autoscale||this.track.autoscaleGroup||"ruler"===this.track.type;for(let i of e)t.includes(i)?i.repaint():n&&i.refresh();this.adjustTrackHeight(),this.repaintSamples(),this.updateRulerViewportLabels()}clearCachedFeatures(){for(let e of this.viewports)e.clearCache()}updateRulerViewportLabels(){const e=this.browser.calculateViewportWidth(this.viewports.length);for(let t of this.viewports)"ruler"===this.track.type&&(this.viewports.length>1?t.presentLocusLabel(e):t.dismissLocusLabel())}async getInViewFeatures(){if(!this.browser||!this.browser.referenceFrameList)return[];let e=[];const t=this.viewports.filter((e=>e.isVisible()));for(let i of t){const t=i.referenceFrame,{chr:n,start:r,bpPerPixel:s}=i.referenceFrame,o=r+t.toBP(i.getWidth());if((!i.featureCache||!i.featureCache.containsRange(n,r,o,s))&&await i.loadFeatures(),i.featureCache&&i.featureCache.features)if("function"==typeof i.featureCache.features.getMax){const t=i.featureCache.features.getMax(r,o);e.push({value:t})}else{const t="function"==typeof i.featureCache.queryFeatures?i.featureCache.queryFeatures(n,r,o):ua(i.featureCache.features,r,o);e=e.concat(t)}}return e}checkContentHeight(){for(let e of this.viewports)e.checkContentHeight();this.adjustTrackHeight()}adjustTrackHeight(){var e=this.maxViewportContentHeight();if(this.track.autoHeight?this.setTrackHeight(e,!1):this.track.paintAxis&&this.paintAxis(),!1===Cf.has(this.track.type)){const t=this.viewports[0].getContentTop(),i=this.viewports[0].$viewport.height(),n=Math.min(0,i-e);if(t<n)for(let e of this.viewports)e.setTop(n);this.updateScrollbar()}}createTrackScrollbar(e){const t=_t.div();if(e.columnContainer.querySelector(".igv-scrollbar-column").appendChild(t),t.style.height=`${this.track.height}px`,this.outerScroll=t,!1===Cf.has(this.track.type)){const i=_t.div();t.appendChild(i),this.innerScroll=i,this.addTrackScrollMouseHandlers(e)}}createTrackDragHandle(e){const t="ideogram"===this.track.type||"ruler"===this.track.type?"igv-track-drag-shim":"igv-track-drag-handle";this.dragHandle=_t.div({class:t}),e.columnContainer.querySelector(".igv-track-drag-column").appendChild(this.dragHandle),this.dragHandle.style.height=`${this.track.height}px`,this.addTrackDragMouseHandlers(e)}createTrackGearPopup(e){this.gearContainer=_t.div(),e.columnContainer.querySelector(".igv-gear-menu-column").appendChild(this.gearContainer),this.gearContainer.style.height=`${this.track.height}px`,!0===this.track.ignoreTrackMenu||(this.gear=_t.div(),this.gearContainer.appendChild(this.gear),this.gear.appendChild(_i.createIcon("cog")),this.trackGearPopup=new xf(this.gear),this.addTrackGearMouseHandlers())}addAxisEventListener(e){this.boundAxisClickHander=function(e){this.browser.dataRangeDialog.configure(this),this.browser.dataRangeDialog.present(ft(this.browser.columnContainer))}.bind(this),e.addEventListener("click",this.boundAxisClickHander)}removeAxisEventListener(e){e.removeEventListener("click",this.boundAxisClickHander)}addTrackScrollMouseHandlers(e){this.boundTrackScrollMouseDownHandler=function(t){t.stopPropagation();const{y:i}=_t.pageCoordinates(t);ft(this.innerScroll).data("yDown",i.toString()),this.boundColumnContainerMouseMoveHandler=function(e){e.stopPropagation();const{y:t}=_t.pageCoordinates(e);this.moveScroller(t-parseInt(ft(this.innerScroll).data("yDown"))),ft(this.innerScroll).data("yDown",t.toString())}.bind(this),e.columnContainer.addEventListener("mousemove",this.boundColumnContainerMouseMoveHandler)}.bind(this),this.innerScroll.addEventListener("mousedown",this.boundTrackScrollMouseDownHandler),this.boundColumnContainerMouseUpHandler=function(t){e.columnContainer.removeEventListener("mousemove",this.boundColumnContainerMouseMoveHandler)}.bind(this),e.columnContainer.addEventListener("mouseup",this.boundColumnContainerMouseUpHandler)}removeTrackScrollMouseHandlers(){!1===Cf.has(this.track.type)&&(this.innerScroll.removeEventListener("mousedown",this.boundTrackScrollMouseDownHandler),this.browser.columnContainer.removeEventListener("mouseup",this.boundColumnContainerMouseUpHandler),this.browser.columnContainer.removeEventListener("mousemove",this.boundColumnContainerMouseMoveHandler))}addTrackDragMouseHandlers(e){if("ideogram"===this.track.id||"ruler"===this.track.id);else{let t;function i(i){i.preventDefault(),t=i.target,t.classList.add("igv-track-drag-handle-hover"),e.startTrackDrag(this)}function n(i){e.endTrackDrag(),t&&i.target!==t&&t.classList.remove("igv-track-drag-handle-hover"),t=void 0}function r(i){i.preventDefault(),void 0===t&&i.target.classList.add("igv-track-drag-handle-hover"),e.updateTrackDrag(this)}function s(e){e.preventDefault(),void 0===t&&e.target.classList.remove("igv-track-drag-handle-hover")}this.boundTrackDragMouseDownHandler=i.bind(this),this.dragHandle.addEventListener("mousedown",this.boundTrackDragMouseDownHandler),this.boundDocumentTrackDragMouseUpHandler=n.bind(this),document.addEventListener("mouseup",this.boundDocumentTrackDragMouseUpHandler),this.boundTrackDragMouseEnterHandler=r.bind(this),this.dragHandle.addEventListener("mouseenter",this.boundTrackDragMouseEnterHandler),this.dragHandle.addEventListener("mouseout",(e=>{e.preventDefault(),void 0===t&&e.target.classList.remove("igv-track-drag-handle-hover")})),this.boundTrackDragMouseOutHandler=s.bind(this),this.dragHandle.addEventListener("mouseout",this.boundTrackDragMouseOutHandler)}}removeTrackDragMouseHandlers(){"ideogram"===this.track.id||"ruler"===this.track.id||(this.dragHandle.removeEventListener("mousedown",this.boundTrackDragMouseDownHandler),document.removeEventListener("mouseup",this.boundDocumentTrackDragMouseUpHandler),this.dragHandle.removeEventListener("mouseup",this.boundTrackDragMouseEnterHandler),this.dragHandle.removeEventListener("mouseout",this.boundTrackDragMouseOutHandler))}addTrackGearMouseHandlers(){if(!0===this.track.ignoreTrackMenu);else{function e(e){e.preventDefault(),e.stopPropagation(),this.trackGearPopup.presentMenuList(Hi.trackMenuItemList(this))}this.boundTrackGearClickHandler=e.bind(this),this.gear.addEventListener("click",this.boundTrackGearClickHandler)}}removeTrackGearMouseHandlers(){!0===this.track.ignoreTrackMenu||this.gear.removeEventListener("click",this.boundTrackGearClickHandler)}dispose(){this.removeAxisEventListener(this.axis),this.axis.remove();for(let e of this.viewports)e.dispose();this.sampleNameViewport.dispose(),this.removeTrackScrollMouseHandlers(),this.outerScroll.remove(),this.removeTrackDragMouseHandlers(),this.dragHandle.remove(),this.removeTrackGearMouseHandlers(),this.gearContainer.remove(),"function"==typeof this.track.dispose&&this.track.dispose();for(let e of Object.keys(this))this[e]=void 0;this.alert&&this.alert.container.remove(),this.disposed=!0}paintAxis(){if("function"==typeof this.track.paintAxis){const{width:e,height:t}=this.axisCanvas.getBoundingClientRect(),i=window.devicePixelRatio||1;this.axisCanvas.height=i*t,this.axisCanvas.width=i*e;const n=this.axisCanvas.getContext("2d");n.scale(i,i),this.track.paintAxis(n,e,t)}}maxViewportContentHeight(){return Math.max(this.viewports.map((e=>e.getContentHeight())))}}const Ef="rgb(150, 150, 150)";class Tf extends Eh{static defaults={height:50,flipAxis:!1,logScale:!1,windowFunction:"mean",graphType:"bar",autoscale:!0,normalize:void 0,scaleFactor:void 0};constructor(e,t){super(e,t)}init(e){super.init(e),this.type="wig",this.featureType="numeric",this.paintAxis=au;const t=e.format?e.format.toLowerCase():e.format;e.featureSource?(this.featureSource=e.featureSource,delete e.featureSource):this.featureSource="bigwig"===t?new Qc(e,this.browser.genome):"tdf"===t?new ed(e,this.browser.genome):ad(e,this.browser.genome),void 0===e.max||!0===e.autoscale?this.autoscale=!0:this.dataRange={min:e.min||0,max:e.max}}async postInit(){const e=await this.getHeader();this.disposed||e&&this.setTrackProperties(e)}async getFeatures(e,t,i,n){const r=await this.featureSource.getFeatures({chr:e,start:t,end:i,bpPerPixel:n,visibilityWindow:this.visibilityWindow,windowFunction:this.windowFunction});if(this.normalize&&this.featureSource.normalizationFactor){const e=this.featureSource.normalizationFactor;for(let t of r)t.value*=e}if(this.scaleFactor){const e=this.scaleFactor;for(let t of r)t.value*=e}return r}menuItemList(){let e=[];return void 0!==this.flipAxis&&(e.push("<hr>"),e.push({label:"Flip y-axis",click:()=>{this.flipAxis=!this.flipAxis,this.trackView.repaintViews()}})),e=e.concat(Hi.numericDataMenuItems(this.trackView)),e}async getHeader(){return"function"==typeof this.featureSource.getHeader&&(this.header=await this.featureSource.getHeader()),this.header}getScaleFactor(e,t,i,n){return n?i/(Math.log10(t+1)-(e<=0?0:Math.log10(e+1))):i/(t-e)}computeYPixelValue(e,t){return(this.flipAxis?e-this.dataRange.min:this.dataRange.max-e)*t}computeYPixelValueInLogScale(e,t){let i=this.dataRange.max,n=this.dataRange.min;return i<=0?0:(n<=-1&&(n=0),n=n<=0?0:Math.log10(n+1),i=Math.log10(i+1),e=Math.log10(e+1),(this.flipAxis?e-n:i-e)*t)}draw(e){const t=e.features,i=e.context,n=e.bpPerPixel,r=e.bpStart,s=e.pixelWidth;e.pixelHeight;const o=r+s*n+1,a=this.color||Ef;let l;"string"==typeof a&&a.startsWith("rgb(")&&(l=Oo.addAlpha(a,.1));const h=this.getScaleFactor(this.dataRange.min,this.dataRange.max,e.pixelHeight,this.logScale),c=e=>this.logScale?this.computeYPixelValueInLogScale(e,h):this.computeYPixelValue(e,h);if(t&&t.length>0&&(void 0===this.dataRange.min&&(this.dataRange.min=0),this.dataRange.max>this.dataRange.min)){let s,a=-1;const h=c(0);for(let e of t){if(e.end<r)continue;if(e.start>o)break;const t=Math.floor((e.start-r)/n);if(isNaN(t))continue;let l=c(e.value);const d=Math.ceil((e.end-r)/n),u=Math.max(1,d-t),f=this.getColorForFeature(e);if("points"===this.graphType){const e=this.config.pointSize||3,n=t+u/2;va.fillCircle(i,n,l,e/2,{fillStyle:f,strokeStyle:f})}else if("line"===this.graphType)null!=s&&va.strokeLine(i,a,s,t,l,{fillStyle:f,strokeStyle:f}),va.strokeLine(i,t,l,t+u,l,{fillStyle:f,strokeStyle:f});else{const e=l-h;va.fillRect(i,t,h,u,e,{fillStyle:f})}a=t+u,s=l}if(this.dataRange.min<0){const t=this.dataRange.max/(this.dataRange.max-this.dataRange.min)*e.pixelHeight;va.strokeLine(i,0,t,e.pixelWidth,t,{strokeStyle:l})}}if(this.config.hasOwnProperty("guideLines"))for(let t of this.config.guideLines)if(t.hasOwnProperty("color")&&t.hasOwnProperty("y")&&t.hasOwnProperty("dotted")){let i=c(t.y),n={strokeStyle:t.color,strokeWidth:2};t.dotted?va.dashedLine(e.context,0,i,e.pixelWidth,i,5,n):va.strokeLine(e.context,0,i,e.pixelWidth,i,n)}}popupData(e,t){if(void 0===t&&(t=this.clickedFeatures(e)),t&&t.length>0){const i=e.genomicLocation,n=[];t.sort((function(e,t){return Math.abs((e.start+e.end)/2-i)-Math.abs((t.start+t.end)/2-i)}));const r=t.length>10?t.slice(0,10):t;r.sort((function(e,t){return e.start-t.start}));for(let e of r)if(e){n.length>0&&n.push("<hr/>");let t=e.end-e.start==1?$i(e.start+1):$i(e.start+1)+"-"+$i(e.end);n.push({name:"Position:",value:t}),n.push({name:"Value:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;",value:$i(e.value)})}return r.length<t.length&&n.push("<hr/>..."),n}return[]}get supportsWholeGenome(){return!this.config.indexURL&&!1!==this.config.supportsWholeGenome}getColorForFeature(e){let t=e.value<0&&this.altColor?this.altColor:this.color||Ef;return"function"==typeof t?t(e.value):t}dispose(){this.trackView=void 0}}function Mf(e){this.thresholds=e.thresholds,this.colors=e.colors}function Rf(e){this.scale=e,this.lowColor="rgb("+e.lowR+","+e.lowG+","+e.lowB+")",this.highColor="rgb("+e.highR+","+e.highG+","+e.highB+")",this.diff=e.high-e.low}Mf.prototype.getColor=function(e){for(let t of this.thresholds)if(e<t)return this.colors[this.thresholds.indexOf(t)];return this.colors[this.colors.length-1]},Rf.prototype.getColor=function(e){var t,i=this.scale;return e<=i.low?this.lowColor:e>=i.high?this.highColor:(t=(e-i.low)/this.diff,"rgb("+Math.floor(i.lowR+t*(i.highR-i.lowR))+","+Math.floor(i.lowG+t*(i.highG-i.lowG))+","+Math.floor(i.lowB+t*(i.highB-i.lowB))+")")};class Lf{constructor(e){this.color=e}getColor(){return this.color}}class If extends Eh{constructor(e,t){super(e,t)}init(e){if(super.init(e),this.type=e.type||"seg","maf"===this.type&&(this.type="mut"),this.isLog=e.isLog,this.displayMode=e.displayMode||"EXPANDED",this.height=e.height||300,this.maxHeight=e.maxHeight||500,this.squishedRowHeight=e.sampleSquishHeight||e.squishedRowHeight||2,this.expandedRowHeight=e.sampleExpandHeight||e.expandedRowHeight||13,this.sampleHeight=this.squishedRowHeight,e.color?this.color=e.color:(this.posColorScale=e.posColorScale||new Rf({low:.1,lowR:255,lowG:255,lowB:255,high:1.5,highR:255,highG:0,highB:0}),this.negColorScale=e.negColorScale||new Rf({low:-1.5,lowR:0,lowG:0,lowB:255,high:-.1,highR:255,highG:255,highB:255}),"mut"===this.type&&(this.colorTable=new ma(e.colorTable||Nf))),this.sampleKeys=[],this.sampleNames=new Map,e.samples){for(let t of e.samples)this.sampleKeys.push(t),this.sampleNames.set(t,t);this.explicitSamples=!0}const t=Object.assign({},this.config);t.maxWGCount=t.maxWGCount||Number.MAX_SAFE_INTEGER,this.featureSource=ad(t,this.browser.genome),this.initialSort=e.sort}async postInit(){"function"==typeof this.featureSource.getHeader&&(this.header=await this.featureSource.getHeader(),this.disposed)||this.header&&this.setTrackProperties(this.header)}menuItemList(){const e=[],t={SQUISHED:"Squish",EXPANDED:"Expand",FILL:"Fill"};e.push("<hr/>"),e.push("DisplayMode:");const i="seg"===this.type?["SQUISHED","EXPANDED","FILL"]:["SQUISHED","EXPANDED"];for(let n of i){const i=zi(t[n],n===this.displayMode);e.push({object:ft(i),click:()=>{this.displayMode=n,this.config.displayMode=n,this.trackView.checkContentHeight(),this.trackView.repaintViews(),this.trackView.moveScroller(this.trackView.sampleNameViewport.trackScrollDelta)}})}return e}hasSamples(){return!0}getSamples(){return{names:this.sampleKeys.map((e=>this.sampleNames.get(e))),height:this.sampleHeight,yOffset:0}}async getFeatures(e,t,i){const n=await this.featureSource.getFeatures({chr:e,start:t,end:i});if(this.initialSort){const e=this.initialSort;this.sortSamples(e.chr,e.start,e.end,e.direction,n),this.initialSort=void 0}return n}draw({context:e,renderSVG:t,pixelTop:i,pixelWidth:n,pixelHeight:r,features:s,bpPerPixel:o,bpStart:a}){if(va.fillRect(e,0,i,n,r,{fillStyle:"rgb(255, 255, 255)"}),s&&s.length>0){this.checkForLog(s),this.updateSampleKeys(s);const t={};let l;switch(this.sampleKeys.forEach((function(e,i){t[e]=i})),this.displayMode){case"FILL":this.sampleHeight=r/this.sampleKeys.length,l=0;break;case"SQUISHED":this.sampleHeight=this.squishedRowHeight,l=0;break;default:this.sampleHeight=this.expandedRowHeight,l=1}const h=this.sampleHeight;for(let e of s)e.pixelRect=void 0;const c=i+r,d=a+n*o+1,u=o;this.sampleYStart=void 0;for(let n of s){if(n.end<a)continue;if(n.start>d)break;const r=n.sampleKey||n.sample;n.row=t[r];const s=n.row*h+l;void 0===this.sampleYStart&&(this.sampleYStart=s);if(s+h<i||s>c)continue;const o=Math.max(n.start,a);let f=Math.round((o-a)/u);const p=Math.min(n.end,d),g=Math.round((p-a)/u);let m,b,w=Math.max(1,g-f);if(this.color?m="function"==typeof this.color?this.color(n):this.color:this.colorTable&&(m=this.colorTable.getColor(n.value.toLowerCase())),"mut"===this.type)b=h-2*l,w<3&&(w=3,f-=1);else{let e=n.value;this.isLog||(e=No(e/2)),m=e<-.1?this.negColorScale.getColor(e):e>.1?this.posColorScale.getColor(e):"white";let t=h;if(h<.25){const i=.1+2*Math.abs(e);t=Math.min(1,i*h)}b=t-2*l}n.pixelRect={x:f,y:s,w:w,h:b},e.fillStyle=m,e.fillRect(f,s,w,b)}}}checkForLog(e){if(void 0===this.isLog){this.isLog=!1;for(let t of e)if(t.value<0)return void(this.isLog=!0)}}computePixelHeight(e){if(!e)return 0;const t="SQUISHED"===this.displayMode?this.squishedRowHeight:this.expandedRowHeight;return this.updateSampleKeys(e),this.sampleKeys.length*t}async sortSamples(e,t,i,n,r){if(r||(r=await this.featureSource.getFeatures({chr:e,start:t,end:i})),!r)return;this.updateSampleKeys(r);const s={},o="ASC"===n?1:-1,a=()=>{const e=i-t+1;for(let n of r){if(n.end<t)continue;if(n.start>i)break;const r=Math.max(t,n.start),o=(Math.min(i,n.end)-r)/e,a=n.sampleKey||n.sample,l=s[a]||0;s[a]=l+o*n.value}this.sampleKeys.sort((function(e,t){let i=s[e],n=s[t];return i||(i=o*Number.MAX_VALUE),n||(n=o*Number.MAX_VALUE),i===n?0:i>n?o:-1*o}))},l=()=>{for(let e of r){if(e.end<t)continue;if(e.start>i)break;const n=e.sampleKey||e.sample;(!s.hasOwnProperty(n)||e.value.localeCompare(s[n])>0)&&(s[n]=e.value)}this.sampleKeys.sort((function(e,t){let i=s[e]||"",n=s[t]||"";return o*i.localeCompare(n)}))};"mut"===this.type?l():a(),this.trackView.repaintViews()}clickedFeatures(e){const t=super.clickedFeatures(e),i=e.y;return t.filter((function(e){const t=e.pixelRect;return t&&i>=t.y&&i<=t.y+t.h}))}hoverText(e){const t=this.clickedFeatures(e);if(t&&t.length>0)return`${t[0].sample}: ${t[0].value}`}popupData(e,t){void 0===t&&(t=this.clickedFeatures(e));const i=[];for(let e of t){i.length>0&&(i.push("<hr/>"),i.push("<hr/>"));const t=e._f||e,n="function"==typeof t.popupData?t.popupData(this.type,this.browser.genome.id):this.extractPopupData(t);Array.prototype.push.apply(i,n)}return i}contextMenuItemList(e){const t=e.viewport.referenceFrame,i=e.genomicLocation,n=this.config.sort?"ASC"===this.config.sort.direction?"DESC":"ASC":"DESC",r=t.toBP(2.5),s=t=>{const i=e.viewport.cachedFeatures;this.sortSamples(t.chr,t.start,t.end,t.direction,i)};return[{label:"seg"===this.type?"Sort by value":"Sort by type",click:t=>{const o={direction:n,chr:e.viewport.referenceFrame.chr,start:i-r,end:i+r};s(o),this.config.sort=o}}]}get supportsWholeGenome(){return(!1===this.config.indexed||!this.config.indexURL)&&!1!==this.config.supportsWholeGenome}updateSampleKeys(e){if(!this.explicitSamples)for(let t of e){const e=t.sampleKey||t.sample;this.sampleNames.has(e)||(this.sampleNames.set(e,t.sample),this.sampleKeys.push(e))}}}const Nf={indel:"rgb(0,200,0)","targeted region":"rgb(236,155,43)",truncating:"rgb(\t150,0,0)","non-coding transcript":"rgb(0,0,150)",synonymous:"rgb(109,165,95)",silent:"rgb(109,135,80)",missense_mutation:"rgb(72,130,187)",missense:"rgb(72,130,187)","splice site":"rgb(143,83,155)",splice_region:"rgb(143,83,155)",nonsense:"rgb(216, 57,81)",nonsense_mutation:"rgb(216, 57,81)",frame_shift_del:"rgb(226,135,65)",frame_shift_ins:"rgb(226,135,65)",in_frame_del:"rgb(247,235,94)",in_frame_ins:"rgb(247,235,94)","*other*":"rgb(159,91,50)"};class Ff extends Eh{constructor(e,t){super(e,t),this.type="merged",this.featureType="numeric",this.paintAxis=au,this.graphType=e.graphType}init(e){if(!e.tracks)throw Error("Error: no tracks defined for merged track"+e);super.init(e)}async postInit(){this.tracks=[];const e=[];for(let t of this.config.tracks){t.isMergedTrack=!0;const i=await this.browser.createTrack(t);i?(i.autoscale=!1,this.tracks.push(i)):console.warn("Could not create track "+t),"function"==typeof i.postInit&&e.push(i.postInit())}this.flipAxis=!!this.config.flipAxis&&this.config.flipAxis,this.logScale=!!this.config.logScale&&this.config.logScale,this.autoscale=this.config.autoscale||void 0===this.config.max,this.autoscale||(this.dataRange={min:this.config.min||0,max:this.config.max});for(let e of this.tracks)e.autoscale=!1,e.dataRange=this.dataRange;return this.height=this.config.height||50,Promise.all(e)}get height(){return this._height}set height(e){if(this._height=e,this.tracks)for(let t of this.tracks)t.height=e,t.config.height=e}menuItemList(){let e=[];return void 0!==this.flipAxis&&e.push({label:"Flip y-axis",click:()=>{this.flipAxis=!this.flipAxis,this.trackView.repaintViews()}}),e=e.concat(Hi.numericDataMenuItems(this.trackView)),e}async getFeatures(e,t,i,n){const r=this.tracks.map((r=>r.getFeatures(e,t,i,n))),s=await Promise.all(r);return new Bf(s)}draw(e){const t=e.features;for(let i=0,n=this.tracks.length;i<n;i++){const n=Object.assign({},e);n.features=t.featureArrays[i],this.tracks[i].dataRange=this.dataRange,this.tracks[i].flipAxis=this.flipAxis,this.tracks[i].logScale=this.logScale,this.graphType&&(this.tracks[i].graphType=this.graphType),this.tracks[i].draw(n)}}popupData(e){if(e.viewport&&e.viewport.cachedFeatures){const t=e.viewport.cachedFeatures.featureArrays;if(t&&t.length===this.tracks.length){const i=[];for(let n=0;n<this.tracks.length;n++){n>0&&i.push("<hr/>"),i.push(`<div style=background-color:rgb(245,245,245);border-bottom-style:dashed;border-bottom-width:1px;padding-bottom:5px;padding-top:10px;font-weight:bold;font-size:larger >${this.tracks[n].name}</div>`);const r=this.tracks[n].popupData(e,t[n]);i.push(...r)}return i}}}clickedFeatures(e){const t=e.viewport.cachedFeatures;if(!t)return[];const i=e.genomicLocation,n=[];for(let r of t.featureArrays){const t=e.referenceFrame.bpPerPixel>.2?3*e.referenceFrame.bpPerPixel:.2,s=ua(r,i-t,i+t);for(let e of s)n.push(e)}return n}get supportsWholeGenome(){return this.tracks.every((e=>e.supportsWholeGenome))}}class Bf{constructor(e){this.featureArrays=e}getMax(e,t){let i=-Number.MAX_VALUE;for(let n of this.featureArrays)for(let r of n)if(void 0!==r.value&&!Number.isNaN(r.value)){if(r.end<e)continue;if(r.start>t)break;i=Math.max(i,r.value)}return i}}class Of extends Eh{static defaults={height:250,theta:Math.PI/4,arcOrientation:!0,showBlocks:!0,blockHeight:3,thickness:1,alpha:.02,logScale:!0};constructor(e,t){super(e,t)}init(e){super.init(e),this.sinTheta=Math.sin(this.theta),this.cosTheta=Math.cos(this.theta),this.arcType=function(e){if(!e.arcType)return"nested";switch(e.arcType){case"chiapet":return"inView";case"chiapetoutbound":return"partialInView";default:return e.arcType}}(e),this.alpha=e.alpha||.02,this.painter={flipAxis:!this.arcOrientation,dataRange:this.dataRange,paintAxis:au},e.valueColumn?(this.valueColumn=e.valueColumn,this.hasValue=!0):e.useScore&&(this.hasValue=!0,this.valueColumn="score"),e.max?(this.dataRange={min:e.min||0,max:e.max},this.autoscale=!1):this.autoscale=!0,e.featureSource?(this.featureSource=e.featureSource,delete e._featureSource):(this.featureSource=ad(e,this.browser.genome),this.featureSource.getWGFeatures=Uf)}async postInit(){if("function"!=typeof this.featureSource.getHeader||(this.header=await this.featureSource.getHeader(),!this.disposed))return this.header&&this.setTrackProperties(this.header),void 0===this.visibilityWindow&&"function"==typeof this.featureSource.defaultVisibilityWindow&&(this.visibilityWindow=await this.featureSource.defaultVisibilityWindow(),this.featureSource.visibilityWindow=this.visibilityWindow),this}get supportsWholeGenome(){return!0}async getFeatures(e,t,i){const n=this.visibilityWindow,r=await this.featureSource.getFeatures({chr:e,start:t,end:i,visibilityWindow:n});return void 0===this.hasValue&&r&&r.length>0&&(this.hasValue=void 0!==r[0].score),r}draw(e){"proportional"===this.arcType||"inView"===this.arcType||"partialInView"===this.arcType?this.drawProportional(e):this.drawNested(e)}drawNested(e){const t=e.context,i=e.pixelWidth,n=e.pixelHeight,r=e.viewportWidth,s=e.bpPerPixel,o=e.bpStart,a=s;va.fillRect(t,0,e.pixelTop,i,n,{fillStyle:"rgb(255, 255, 255)"});const l=e.features;if(l){(function(){let e=0;for(let t of l){let n=(t.start-o)/a,r=(t.end-o)/a;n>=0&&r<=i&&(e=Math.max(e,r-n))}let t=Math.min(r,e)/2;if(e>0){let e=(n-10)/t;this.theta=function(e){let t,i=[.01570925532366355,.15838444032453644,.3249196962329063,.5095254494944288,.7265425280053609,.9999999999999999],n=[.031415926535897934,.3141592653589793,.6283185307179586,.9424777960769379,1.2566370614359172,1.5707963267948966];for(t=0;t<i.length&&!(i[t]>e);t++);let r=0===t?0:i[t-1],s=t<i.length?i[t]:1,o=(e-r)/(s-r),a=0===t?0:n[t-1],l=t<n.length?n[t]:Math.PI/2;return Math.min(Math.PI/2,a+o*(l-a))}(e),this.sinTheta=Math.sin(this.theta),this.cosTheta=Math.cos(this.theta)}}).call(this);const s=this.arcOrientation?e.pixelHeight:0,c=this.arcOrientation;t.font="8px sans-serif",t.textAlign="center";for(let e of l){let n;if(e.drawState=void 0,"function"==typeof this.color?n=this.color(e):(n=this.color||e.color||"rgb(180,25,137)",n&&this.config.useScore&&(n=Hf(n,(h=e.score,Math.min(1,.11+h/779*.89).toString())))),t.lineWidth=e.thickness||this.thickness||1,e.chr1===e.chr2||"all"===e.chr){const{m1:l,m2:h}=Df(e,this.browser.genome);let d=Math.round((l-o)/a),u=Math.round((h-o)/a);if(u<0||d>i)continue;let f=u-d;f<3&&(f=3,d--);const p=f/2,g=p/this.sinTheta,m=this.cosTheta*g,b=d+p;let w,v,y;if(c?(w=this.height+m,v=Math.PI+Math.PI/2-this.theta,y=Math.PI+Math.PI/2+this.theta):(w=-m,v=Math.PI/2-this.theta,y=Math.PI/2+this.theta),this.showBlocks&&"all"!==e.chr){const i=(e.start1-o)/a,n=(e.end1-o)/a,r=(e.start2-o)/a,l=(e.end2-o)/a,h=this.arcOrientation?-this.blockHeight:this.blockHeight;t.fillRect(i,s,n-i,h),t.fillRect(r,s,l-r,h)}n&&!this.config.useScore&&f>r&&(n=Hf(n,this.alpha)),t.strokeStyle=n,t.fillStyle=n,t.beginPath(),t.arc(b,w,g,v,y,!1),t.stroke(),e.drawState={xc:b,yc:w,r:g}}else{let r=Math.round((e.start-o)/a),s=Math.round((e.end-o)/a);if(s<0||r>i)continue;let l=s-r;l<3&&(l=3,r--);const h=e.chr===e.chr1?e.chr2:e.chr1;t.strokeStyle=n,t.fillStyle=Hf(uf(h),.5),c?(t.fillRect(r,this.height/2,l,this.height/2),t.fillText(h,r+l/2,this.height/2-5),e.drawState={x:r,y:this.height/2,w:l,h:this.height/2}):(t.fillRect(r,0,l,this.height/2),t.fillText(h,r+l/2,this.height/2+13),e.drawState={x:r,y:0,w:l,h:this.height/2})}}}var h}getScaleFactor(e,t,i,n){return n?i/(Math.log10(t+1)-(e<=0?0:Math.log10(e+1))):i/(t-e)}drawProportional(e){const t=e.context,i=e.pixelWidth,n=e.pixelHeight,r=e.bpPerPixel,s=e.bpStart,o=r,a=e.referenceFrame.start,l=e.referenceFrame.end;va.fillRect(t,0,e.pixelTop,i,n,{fillStyle:"rgb(255, 255, 255)"});const h=e.features;if(h&&h.length>0){const n=0,r=this.getScaleFactor(n,this.dataRange.max,e.pixelHeight-1,this.logScale),c=this.arcOrientation?e.pixelHeight:0;for(let e of h){e.drawState=void 0;const n=this.valueColumn?e[this.valueColumn]:e.score;if(void 0===n||Number.isNaN(n))continue;const h=Math.round((this.logScale?Math.log10(n+1):n)*r);if(e.chr1===e.chr2||"all"===e.chr){const{m1:i,m2:r}=Df(e,this.browser.genome);let d=Math.round((i-s)/o),u=Math.round((r-s)/o)-d;if(u<3&&(u=3,d--),n<this.dataRange.min||n>this.dataRange.max)continue;if("proportional"!==this.arcType){const e="partialInView"===this.arcType,t=i>=a&&r<=l;let n=!1,s=!1;if(!t&&e&&(n=a<=i&&i<=l,n||(s=a<=r&&r<=l)),!(t||n||s))continue}const f=u/2,p=d+u/2;e.drawState={xc:p,yc:c,radiusX:f,radiusY:h};const g=!!this.arcOrientation,m=e.color||this.color;if(t.strokeStyle=m,t.lineWidth=e.thickness||this.thickness||1,!0===t.isSVG?t.strokeEllipse(p,c,f,h,0,0,Math.PI,g):(t.beginPath(),t.ellipse(p,c,f,h,0,0,Math.PI,g),t.stroke()),this.alpha&&(t.fillStyle=Hf(m,this.alpha),!0===t.isSVG?t.fillEllipse(p,c,f,h,0,0,Math.PI,g):t.fill()),this.showBlocks&&"all"!==e.chr){t.fillStyle=m;const i=(e.start1-s)/o,n=(e.end1-s)/o,r=(e.start2-s)/o,a=(e.end2-s)/o,l=this.arcOrientation?-this.blockHeight:this.blockHeight;t.fillRect(i,c,n-i,l),t.fillRect(r,c,a-r,l)}}else{let r=Math.round((e.start-s)/o),a=Math.round((e.end-s)/o);if(a<0||r>i||n<this.dataRange.min||n>this.dataRange.max)continue;const l=Math.min(h,this.height-13);let c=a-r;c<3&&(c=3,r--);const d=e.chr===e.chr1?e.chr2:e.chr1;if(t.font="8px sans-serif",t.textAlign="center",t.fillStyle=Hf(uf(d),.5),this.arcOrientation){const i=this.height-l;t.fillRect(r,i,c,l),t.fillText(d,r+c/2,i-5),e.drawState={x:r,y:i,w:c,h:l}}else t.fillRect(r,0,c,l),t.fillText(d,r+c/2,l+13),e.drawState={x:r,y:0,w:c,h:l}}}}}clearAxis(e,t,i){va.fillRect(e,0,0,t,i,{fillStyle:"rgb(255, 255, 255)"})}paintAxis(e,t,i){const n={min:0,max:this.dataRange.max};"proportional"===this.arcType||"inView"===this.arcType||"partialInView"===this.arcType?(this.painter.flipAxis=!this.arcOrientation,this.painter.dataRange=n,this.painter.paintAxis(e,t,i)):this.clearAxis(e,t,i)}menuItemList(){let e=[];if(this.hasValue){e.push("<hr/>");const t={nested:"Nested",proportional:"Proportional - All",inView:"Proportional - Both Ends in View",partialInView:"Proportional - One End in View"};e.push("<b>Arc Type</b>");for(let i of["nested","proportional","inView","partialInView"])e.push({object:ft(zi(t[i],i===this.arcType)),click:()=>{this.arcType=i,this.trackView.repaintViews()}})}return e.push("<hr/>"),e.push({name:"Toggle arc direction",click:()=>{this.arcOrientation=!this.arcOrientation,this.trackView.repaintViews()}}),e.push({name:this.showBlocks?"Hide Blocks":"Show Blocks",click:()=>{this.showBlocks=!this.showBlocks,this.trackView.repaintViews()}}),"proportional"!==this.arcType&&"inView"!==this.arcType&&"partialInView"!==this.arcType||(e=e.concat(Hi.numericDataMenuItems(this.trackView))),this.browser.circularView&&(e.push("<hr/>"),e.push({label:"Add interactions to circular view",click:()=>{for(let e of this.trackView.viewports)this.addChordsForViewport(e.referenceFrame)}})),e}contextMenuItemList(e){if(this.browser.circularView){const t=e.viewport,i=[];return i.push({label:"Add interactions to circular view",click:()=>{const e=t.referenceFrame;this.addChordsForViewport(e)}}),i.push("<hr/>"),i}}addChordsForViewport(e){const t=("all"===e.chr?this.featureSource.getAllFeatures():this.featureSource.featureCache.queryFeatures(e.chr,e.start,e.end)).filter((e=>e.drawState));if(0===t.length)return;Pu(t.map((e=>{const t=e._f||e;return{uniqueId:`${t.chr1}:${t.start1}-${t.end1}_${t.chr2}:${t.start2}-${t.end2}`,refName:Ou(t.chr1),start:t.start1,end:t.end1,mate:{refName:Ou(t.chr2),start:t.start2,end:t.end2}}})),this,e,.5)}doAutoscale(e){let t=0;if(e)for(let i of e){const e=this.valueColumn?i[this.valueColumn]:i.score;Number.isNaN(e)||(t=Math.max(t,e))}return{min:0,max:t}}popupData(e,t){void 0===t&&(t=this.clickedFeatures(e));const i=[];for(let e of t){const t=e._||e;if(i.push({name:"Region 1",value:Pf(t.chr1,t.start1,t.end1,t.strand1)}),i.push({name:"Region 2",value:Pf(t.chr2,t.start2,t.end2,t.strand2)}),t.name&&i.push({name:"Name",value:t.name}),void 0!==t.value&&i.push({name:"Value",value:t.value}),void 0!==t.score&&i.push({name:"Score",value:t.score}),t.extras&&this.header&&this.header.columnNames){const e=this.header.columnNames,n=this.header.hiccups?6:10;for(let r=n;r<e.length;r++)this.header.colorColumn!==r&&("info"===e[r]?Vf(i,t.extras[r-n]):i.push({name:e[r],value:t.extras[r-n]}))}break}return i}clickedFeatures(e){const t=e.viewport.cachedFeatures,i=[];if(t){const n="proportional"===this.arcType||"inView"===this.arcType||"partialInView"===this.arcType;for(let r of t)if(r.drawState)if(r.chr1===r.chr2||"all"===r.chr)if(n){const{xc:t,yc:n,radiusX:s,radiusY:o}=r.drawState,a=e.canvasX-t,l=e.canvasY-n,h=a/s*(a/s)+l/o*(l/o);h<=1&&i.push({score:1/h,feature:r})}else{const{xc:t,yc:n,r:s}=r.drawState,o=e.canvasX-t,a=e.canvasY-n,l=Math.abs(Math.sqrt(o*o+a*a)-s);l<5&&i.push({score:l,feature:r})}else{const{x:t,y:n,w:s,h:o}=r.drawState,a=5;if(e.canvasX>=t-a&&e.canvasX<=t+s+a&&e.canvasY>=n&&e.canvasY<=n+o){const n=-Math.abs(e.canvasX-(t+s/2));i.push({score:n,feature:r});break}}}return i.length>1&&i.sort(((e,t)=>e.score-t.score)),i.map((e=>e.feature))}}function Df(e,t){let i=(e.start1+e.end1)/2,n=(e.start2+e.end2)/2;if("all"===e.chr&&(i=t.getGenomeCoordinate(e.chr1,i),n=t.getGenomeCoordinate(e.chr2,n)),i>n){const e=i;i=n,n=e}return{m1:i,m2:n}}function Pf(e,t,i,n){return n&&"."!==n?`${e}:${$i(t+1)}-${$i(i)} (${n})`:`${e}:${$i(t+1)}-${$i(i)}`}const zf=new Map;function Hf(e,t){const i=`${e}_${t}`;let n=zf.get(i);return n||(n=Oo.addAlpha(e,t),zf.set(i,n)),n}function Uf(e){const t=e=>{const t=Object.assign({},e);return t.chr="all",t.start=i.getGenomeCoordinate(e.chr1,e.start1),t.end=i.getGenomeCoordinate(e.chr2,e.end2),t},i=this.genome;let n,r=0;for(let t of i.wgChromosomeNames){let i=e[t];if(i)for(let e of i)e.dup||(r++,e.score&&(!n||e.score>n.score)&&(n=e))}const s=this.maxWGCount,o=n&&n.score>0&&r>s?5:1,a=Math.floor(s/o),l=n&&n.score>0?Math.log(n.score)/o:Number.MAX_SAFE_INTEGER;let h,c=[],d=[];for(let e=0;e<o;e++)d.push([0]),c.push([]);for(let n of i.wgChromosomeNames){let i=e[n];if(i)for(let e of i)if(!e.dup){const i=e.score?Math.max(0,Math.min(o-1,Math.floor(Math.log(e.score)/l))):0;if(c[i].length<a)c[i].push(t(e));else{const n=a/(d[i]+1);if(Math.random()<n){const n=Math.floor(Math.random()*(a-1));c[i][n]=t(e)}}d[i]++}}if(1===o)h=c[0];else{h=[];for(let e of c)for(let t of e)h.push(t);n&&h.push(t(n)),h.sort((function(e,t){return e.start-t.start})),console.log(h.length)}return h}function Vf(e,t){const i=t.split(";");for(let t of i){const i=t.split("=");2===i.length&&e.push({name:i[0],value:i[1]})}}const qf=ji,jf=new Map([["REF","referenceBases"],["ALT","alternateBases"],["QUAL","quality"],["FILTER","filter"]]);class $f extends Eh{static defaults={displayMode:"EXPANDED",sortDirection:"ASC",showGenotypes:!0,squishedVariantHeight:2,squishedCallHeight:1,expandedCallHeight:10,expandedVGap:2,squishedVGap:1,expandedGroupGap:10,squishedGroupGap:5,featureHeight:14,noGenotypeColor:"rgb(200,180,180)",noCallColor:"rgb(225, 225, 225)",nonRefColor:"rgb(200, 200, 215)",mixedColor:"rgb(200, 220, 200)",homrefColor:"rgb(200, 200, 200)",homvarColor:"rgb(17,248,254)",hetvarColor:"rgb(34,12,253)",colorBy:void 0,visibilityWindow:void 0,labelDisplayMode:void 0,type:"variant"};constructor(e,t){super(e,t)}init(e){super.init(e),this.expandedVariantHeight=e.expandedVariantHeight||e.variantHeight||10,this.featureSource=ad(e,this.browser.genome),this._initColorBy=e.colorBy,e.colorTable&&(this.colorTables=new Map,this.colorTables.set(e.colorBy,new ma(e.colorTable))),this._color=e.color,this._strokecolor=e.strokecolor,this._context_hook=e.context_hook,this.variantRowCount(1)}async postInit(){if(this.header=await this.getHeader(),!this.disposed){if(void 0===this.visibilityWindow&&!1!==this.config.indexed){const e=Xi(this.config.url)?this.config.url.name:this.config.url;qf(e)&&e.toLowerCase().includes("gnomad")?this.visibilityWindow=1e3:"function"==typeof this.featureSource.defaultVisibilityWindow?this.visibilityWindow=await this.featureSource.defaultVisibilityWindow():this.visibilityWindow=1e6}return this}}get supportsWholeGenome(){return!1===this.config.indexed||!0===this.config.supportsWholeGenome}get color(){return this._color||"rgb(0,0,150)"}set color(e){this._color=e,this.colorBy=void 0}async getHeader(){if(!this.header){if("function"==typeof this.featureSource.getHeader){const e=await this.featureSource.getHeader();e&&(this.callSets=e.callSets||[]),this.header=e}this.sampleNames=this.callSets?this.callSets.map((e=>e.name)):[]}return this.header}getCallsetsLength(){return this.callSets?this.callSets.length:0}async getFeatures(e,t,i,n){return void 0===this.header&&(this.header=await this.getHeader()),this.featureSource.getFeatures({chr:e,start:t,end:i,bpPerPixel:n,visibilityWindow:this.visibilityWindow})}hasSamples(){return this.getCallsetsLength()>0}getSamples(){return{yOffset:this.sampleYOffset,names:this.sampleNames,height:this.sampleHeight}}computePixelHeight(e){if(!e||0==e.length)return 10;const t="COLLAPSED"===this.displayMode?1:this.nVariantRows,i="SQUISHED"===this.displayMode?this.squishedVGap:this.expandedVGap,n="SQUISHED"===this.displayMode?this.squishedVariantHeight:this.expandedVariantHeight,r="SQUISHED"===this.displayMode?this.squishedCallHeight:this.expandedCallHeight;return 10+t*(n+i)+i+((!1===this.showGenotypes?0:this.getCallsetsLength()*t)+1)*(r+i)}variantRowCount(e){this.nVariantRows=e}draw({context:e,pixelWidth:t,pixelHeight:i,bpPerPixel:n,bpStart:r,pixelTop:s,features:o}){va.fillRect(e,0,s,t,i,{fillStyle:"rgb(255, 255, 255)"});const a="SQUISHED"===this.displayMode?this.squishedVGap:this.expandedVGap,l="COLLAPSED"===this.displayMode?1:this.nVariantRows,h="SQUISHED"===this.displayMode?this.squishedVariantHeight:this.expandedVariantHeight;this.variantBandHeight=10+l*(h+a);let c=this.callSets;!c&&this._f&&(c=this._f.callSets);const d=this.getCallsetsLength();if(c&&d>0&&!1!==this.showGenotypes&&va.strokeLine(e,0,this.variantBandHeight,t,this.variantBandHeight,{strokeStyle:"rgb(224,224,224) "}),o){const i="SQUISHED"===this.displayMode?this.squishedCallHeight:this.expandedCallHeight,s="SQUISHED"===this.displayMode?this.squishedVGap:this.expandedVGap,a=r+t*n+1;for(let t of o){if(t.end<r)continue;if(t.start>a)break;const o="SQUISHED"===this.displayMode?this.squishedVariantHeight:this.expandedVariantHeight,l=10+("COLLAPSED"===this.displayMode?0:t.row*(o+s)),h=o;let u=Math.round((t.start-r)/n),f=Math.round((t.end-r)/n),p=Math.max(1,f-u);p<3?(p=3,u-=1):p>5&&(u+=1,p-=2),e.fillStyle=this.getColorForFeature(t),e.fillRect(u,l,p,h);let g=this.getVariantStrokecolor(t);if(g&&(e.strokeStyle=g,e.strokeRect(u,l,p,h)),this.callContextHook(t,e,u,l,p,h),t.pixelRect={x:u,y:l,w:p,h:h},d>0&&!1!==this.showGenotypes){const n="COLLAPSED"===this.displayMode?1:this.nVariantRows;this.sampleYOffset=this.variantBandHeight+s,this.sampleHeight=n*(i+s);let r=0;if(c&&t.calls)for(let n of c){const o=t.calls[n.id];if(o){const a="COLLAPSED"===this.displayMode?0:t.row,l=this.sampleYOffset+r*this.sampleHeight+a*(i+s);let h=!0,c=!0,d=!1;if(o.genotype)for(let e of o.genotype){if("."===e){d=!0;break}0!==e&&(c=!1),0===e&&(h=!1)}o.genotype?e.fillStyle=d?this.noCallColor:c?this.homrefColor:h?this.homvarColor:this.hetvarColor:e.fillStyle=this.noGenotypeColor,e.fillRect(u,l,p,i),n.pixelRect={x:u,y:l,w:p,h:i}}r++}}}}else console.log("No feature list")}getColorForFeature(e){const t=e._f||e;let i;if(this.colorBy){const e=this.colorBy;let n;if(t.info.hasOwnProperty(e))n=t.info[e];else if(jf.has(e)){n=t[jf.get(e)]}i=this.getVariantColorTable(e).getColor(n),i||(i="gray")}else i=this._color?"function"==typeof this._color?this._color(e):this._color:"NONVARIANT"===t.type?this.nonRefColor:"MIXED"===t.type?this.mixedColor:this.color;return i}getVariantStrokecolor(e){const t=e._f||e;let i;return i=this._strokecolor?"function"==typeof this._strokecolor?this._strokecolor(t):this._strokecolor:void 0,i}callContextHook(e,t,i,n,r,s){if(this._context_hook&&"function"==typeof this._context_hook){const o=e._f||e;t.save(),this._context_hook(o,t,i,n,r,s),t.restore()}}clickedFeatures(e){let t=super.clickedFeatures(e);const i="EXPANDED"===this.displayMode?this.expandedVGap:this.squishedVGap,n=i+("SQUISHED"===this.displayMode?this.squishedCallHeight:this.expandedCallHeight),r=e.y;if(r<=this.variantBandHeight){const e="SQUISHED"===this.displayMode?this.squishedVariantHeight:this.expandedVariantHeight,n=Math.floor((r-10)/(e+i));"COLLAPSED"!==this.displayMode&&(t=t.filter((e=>e.row===n)))}else if(this.callSets){const e=this.callSets,i=r-this.variantBandHeight,s=Math.floor(i/this.sampleHeight);if(s>=0&&s<e.length){const r=Math.floor((i-s*this.sampleHeight)/n),o="COLLAPSED"===this.displayMode?t:t.filter((e=>e.row===r)),a=e[s];t=o.map((e=>{const t=e.calls[a.id];return function(e,t){if(e.genotype){let i="";if("."===t.alternateBases)i="No Call";else{const n=t.alternateBases.split(",");for(let r of e.genotype)if(i.length>0&&(i+="|"),"."===r)i+=".";else if(0===r)i+=t.referenceBases;else{i+=n[r-1].replace("<","&lt;")}}e.genotypeName=i}}(t,e),t}))}}return t}popupData(e,t){void 0===t&&(t=this.clickedFeatures(e));const i=e.genomicLocation,n=this.browser.genome.id,r=this.browser.sampleInformation;let s=[];for(let e of t){const t=e._f||e;if(s.length>0&&s.push({html:'<hr style="border-top-width:2px ;border-color: #c9c3ba" />'}),"function"==typeof t.popupData){const e=t.popupData(i,n);Array.prototype.push.apply(s,e)}else{const e=t;if(void 0!==e.callSetName&&s.push({name:"Name",value:e.callSetName}),e.genotypeName&&s.push({name:"Genotype",value:e.genotypeName}),void 0!==e.phaseset&&s.push({name:"Phase set",value:e.phaseset}),void 0!==e.genotypeLikelihood&&s.push({name:"genotypeLikelihood",value:e.genotypeLikelihood.toString()}),r){var o=r.getAttributes(e.callSetName);o&&Object.keys(o).forEach((function(e){var t=e.replace(/([A-Z])/g," $1");t=t.charAt(0).toUpperCase()+t.slice(1),s.push({name:t,value:o[e]})}))}var a=Object.keys(e.info);a.length&&s.push("<hr/>"),a.forEach((function(t){s.push({name:t,value:decodeURIComponent(e.info[t])})}))}}return s}menuItemList(){const e=[];if(this.header.INFO&&this.header.INFO){const t=this.header.INFO.SVTYPE?["SVTYPE"]:[];if(this._initColorBy&&"SVTYPE"!==this._initColorBy&&t.push(this._initColorBy),t.length>0){e.push("<hr/>");const i=ft('<div class="igv-track-menu-category igv-track-menu-border-top">');i.text("Color by:"),e.push({name:void 0,object:i,click:void 0,init:void 0}),t.sort();for(let i of t){const t=this.colorBy===i,n=i||"None";e.push(this.colorByCB({key:i,label:n},t))}e.push(this.colorByCB({key:void 0,label:"None"},void 0===this.colorBy)),e.push("<hr/>")}}this.getCallsetsLength()>0&&(e.push({object:ft('<div class="igv-track-menu-border-top">')}),e.push({object:ft(zi("Show Genotypes",this.showGenotypes)),click:()=>{this.showGenotypes=!this.showGenotypes,this.trackView.checkContentHeight(),this.trackView.repaintViews()}})),e.push({object:ft('<div class="igv-track-menu-border-top">')});for(let t of["COLLAPSED","SQUISHED","EXPANDED"]){e.push({object:ft(zi({COLLAPSED:"Collapse",SQUISHED:"Squish",EXPANDED:"Expand"}[t],t===this.displayMode)),click:()=>{this.displayMode=t,this.trackView.checkContentHeight(),this.trackView.repaintViews()}})}return this.browser.circularView&&(e.push("<hr>"),e.push({label:"Add SVs to circular view",click:()=>{for(let e of this.trackView.viewports)this.sendChordsForViewport(e)}})),e}contextMenuItemList(e){if(this.browser.circularView){const t=e.viewport,i=[];return i.push({label:"Add SVs to Circular View",click:()=>{this.sendChordsForViewport(t)}}),i.push("<hr/>"),i}}sendChordsForViewport(e){const t=e.referenceFrame;let i;if("all"===t.chr){const e=this.featureSource.getAllFeatures(),t=Object.keys(e).map((t=>e[t]));i=[].concat(...t)}else i=this.featureSource.featureCache.queryFeatures(t.chr,t.start,t.end);Pu(i.filter((e=>{const t=e._f||e;return t.info&&t.info.CHR2&&t.info.END&&(t.info.CHR2!==t.chr||Math.abs(Number.parseInt(t.info.END)-t.pos)>1e6)})).map((e=>{const t=e._f||e,i=Number.parseInt(t.info.END),n=i-100,r=i+100;return{uniqueId:`${t.chr}:${t.start}-${t.end}_${t.info.CHR2}:${t.info.END}`,refName:Ou(t.chr),start:t.start,end:t.end,mate:{refName:Ou(t.info.CHR2),start:n,end:r}}})),this,t,.5)}colorByCB(e,t){return{name:void 0,object:ft(zi(e.label,t)),click:()=>{e.key===this.colorBy?(this.colorBy=void 0,delete this.config.colorBy,this.trackView.repaintViews()):(this.colorBy=e.key,this.config.colorBy=e.key,this.trackView.repaintViews())},init:void 0}}getState(){const e=super.getState();return this._color&&"function"!=typeof this._color&&(e.color=this._color),e}getVariantColorTable(e){if(this.colorTables||(this.colorTables=new Map),!this.colorTables.has(e)){let t;if("SVTYPE"===e)t=Wf;else t=new ga("Set1");this.colorTables.set(e,t)}return this.colorTables.get(e)}}const Wf=new ma({DEL:"#ff2101",INS:"#001888",DUP:"#028401",INV:"#008688",CNV:"#8931ff",BND:"#891100","*":"#002eff"});class Gf extends Eh{constructor(e,t){super(e,t)}init(e){super.init(e),this.name=e.name,this.pValueField=e.pValueField||"pValue",this.geneField=e.geneField||"geneSymbol",this.snpField=e.snpField||"snp";const t=e.minLogP||e.min,i=e.maxLogP||e.max;this.dataRange={min:t||3.5,max:i||25},this.autoscale=!i||e.autoscale,this.autoscalePercentile=void 0===e.autoscalePercentile?98:e.autoscalePercentile,this.background=e.background,this.divider=e.divider||"rgb(225,225,225)",this.dotSize=e.dotSize||2,this.height=e.height||100,this.autoHeight=!1,this.disableButtons=e.disableButtons,this.visibilityWindow=void 0===e.visibilityWindow?2e6:e.visibilityWindow>=0?Math.min(2e6,e.visibilityWindow):2e6,this.featureSource=ad(e,this.browser.genome),Uu.gtexLoaded=!0}paintAxis(e,t,i){const n=(this.dataRange.max-this.dataRange.min)/i,r={font:"normal 10px Arial",textAlign:"right",strokeStyle:"black"};va.fillRect(e,0,0,t,i,{fillStyle:"rgb(255, 255, 255)"});const s=Math.ceil(10*(this.dataRange.max-this.dataRange.min)/i);for(let o=4;o<=this.dataRange.max;o+=s){const s=.85*t,a=s-5,l=s,h=i-(o-this.dataRange.min)/n;va.strokeLine(e,a,h,l,h,r),h>8&&va.fillText(e,o,a-1,h+2,r)}r.textAlign="center",va.fillText(e,"-log10(pvalue)",t/4,i/2,r,{rotate:{angle:-90}})}async getFeatures(e,t,i){const n=this.pValueField,r=this.visibilityWindow,s=await this.featureSource.getFeatures({chr:e,start:t,end:i,visibilityWindow:r});return s.forEach((function(e){e.value=e[n]})),s}draw(e){const t=e.context,i=e.pixelWidth,n=e.pixelHeight;this.background&&va.fillRect(t,0,0,i,n,{fillStyle:this.background}),va.strokeLine(t,0,n-1,i,n-1,{strokeStyle:this.divider});const r=r=>{const s=r?2*this.dotSize:this.dotSize,o=e.bpStart,a=(this.dataRange.max-this.dataRange.min)/n,l=e.referenceFrame.selection;for(let c of e.features){const d=(c.start-o+.5)/e.bpPerPixel;if(d<0)continue;if(d>i)break;const u=c.snp.toUpperCase(),f=c[this.geneField].toUpperCase(),p=l&&(l.snp===u||l.gene===f);if(!r||p){l&&l.snp===u&&l.addGene(f);var h=-Math.log(c[this.pValueField])/Math.LN10;if(h>=this.dataRange.min){let e;h>this.dataRange.max?(h=this.dataRange.max,e=!0):e=!1;const i=Math.max(0+s,n-Math.round((h-this.dataRange.min)/a));let o;c.px=d,c.py=i,c.radius=s,r&&l?(o=l.colorForGene(f),va.setProperties(t,{fillStyle:o,strokeStyle:"black"})):(o=e?"rgb(150, 150, 150)":"rgb(180, 180, 180)",va.setProperties(t,{fillStyle:o,strokeStyle:o})),va.fillCircle(t,d,i,s),va.strokeCircle(t,d,i,s)}}}};r(!1),r(!0)}popupData(e,t){if(void 0===t&&(t=e.viewport.cachedFeatures),!t||0===t.length)return[];const i=this.name,n=[];for(let r of t)Math.abs(r.px-e.canvasX)<r.radius+3&&Math.abs(r.py-e.canvasY)<r.radius+3&&(n.length>0&&n.push("<hr/>"),n.push({name:"snp id",value:r.snp},{name:"gene id",value:r.geneId},{name:"gene name",value:r.geneName},{name:"p value",value:r.pValue},{name:"tissue",value:i}));return n}menuItemList(){return Hi.numericDataMenuItems(this.trackView)}doAutoscale(e){if(e.length>0){var t=e.map((function(e){return-Math.log(e.value)/Math.LN10}));this.dataRange.max=Lo(t,this.autoscalePercentile)}else{const e=this.config.maxLogP||this.config.max;this.dataRange.max=e||25}return this.dataRange}}const Zf={X:"rgb(204, 153, 0)",Y:"rgb(153, 204, 0)",Un:"darkGray)",1:"rgb(80, 80, 255)",2:"rgb(206, 61, 50)","2a":"rgb(210, 65, 55)","2b":"rgb(215, 70, 60)",3:"rgb(116, 155, 88)",4:"rgb(240, 230, 133)",5:"rgb(70, 105, 131)",6:"rgb(186, 99, 56)",7:"rgb(93, 177, 221)",8:"rgb(128, 34, 104)",9:"rgb(107, 215, 107)",10:"rgb(213, 149, 167)",11:"rgb(146, 72, 34)",12:"rgb(131, 123, 141)",13:"rgb(199, 81, 39)",14:"rgb(213, 143, 92)",15:"rgb(122, 101, 165)",16:"rgb(228, 175, 105)",17:"rgb(59, 27, 83)",18:"rgb(205, 222, 183)",19:"rgb(97, 42, 121)",20:"rgb(174, 31, 99)",21:"rgb(231, 199, 111)",22:"rgb(90, 101, 94)",23:"rgb(204, 153, 0)",24:"rgb(153, 204, 0)",25:"rgb(51, 204, 0)",26:"rgb(0, 204, 51)",27:"rgb(0, 204, 153)",28:"rgb(0, 153, 204)",29:"rgb(10, 71, 255)",30:"rgb(71, 117, 255)",31:"rgb(255, 194, 10)",32:"rgb(255, 209, 71)",33:"rgb(153, 0, 51)",34:"rgb(153, 26, 0)",35:"rgb(153, 102, 0)",36:"rgb(128, 153, 0)",37:"rgb(51, 153, 0)",38:"rgb(0, 153, 26)",39:"rgb(0, 153, 102)",40:"rgb(0, 128, 153)",41:"rgb(0, 51, 153)",42:"rgb(26, 0, 153)",43:"rgb(102, 0, 153)",44:"rgb(153, 0, 128)",45:"rgb(214, 0, 71)",46:"rgb(255, 20, 99)",47:"rgb(0, 214, 143)",48:"rgb(20, 255, 177)"};for(let Xw of Object.keys(Zf)){Zf["chr"+Xw]=Zf[Xw]}for(let Yw=1;Yw<=48;Yw++){if(10===Yw)continue;const Kw=Qf(Yw);Zf[Kw]=Zf[Yw.toString()]}function Qf(e){if(!+e)return!1;for(var t=String(+e).split(""),i=["","C","CC","CCC","CD","D","DC","DCC","DCCC","CM","","X","XX","XXX","XL","L","LX","LXX","LXXX","XC","","I","II","III","IV","V","VI","VII","VIII","IX"],n="",r=3;r--;)n=(i[+t.pop()+10*r]||"")+n;return Array(+t.join("")+1).join("M")+n}class Xf extends Eh{constructor(e,t){super(e,t)}init(e){super.init(e),this.useChrColors=void 0===e.useChrColors||e.useChrColors,this.trait=e.trait,this.posteriorProbability=e.posteriorProbability,this.valueProperty="bed"===e.format?"score":"value",this.height=e.height||100,this.autoscale=e.autoscale,this.autoscalePercentile=void 0===e.autoscalePercentile?98:e.autoscalePercentile,this.background=e.background,this.divider=e.divider||"rgb(225,225,225)",this.dotSize=e.dotSize||3,this.popoverWindow=void 0===e.popoverWindow?1e8:e.popoverWindow,this.useChrColors?this.colorScale=new ma(e.colorTable||Zf):e.color?this.colorScale=new Lf(e.color):this.colorScale=new Mf(e.colorScale||{thresholds:[5e-8,5e-4,.5],colors:["rgb(255,50,50)","rgb(251,100,100)","rgb(251,170,170)","rgb(227,238,249)"]}),this.featureSource=ad(e,this.browser.genome)}async postInit(){if("function"!=typeof this.featureSource.getHeader||(this.header=await this.featureSource.getHeader(),!this.disposed))return this.header&&this.setTrackProperties(this.header),this.autoscale||(this.posteriorProbability?this.dataRange={min:void 0===this.config.min?0:this.config.min,max:void 0===this.config.max?1:this.config.max}:this.dataRange={min:void 0===this.config.min?0:this.config.min,max:void 0===this.config.max?25:this.config.max}),this}get supportsWholeGenome(){return!0}async getFeatures(e,t,i){const n=this.visibilityWindow;return this.featureSource.getFeatures({chr:e,start:t,end:i,visibilityWindow:n})}draw(e){const t=e.features,i=e.context,n=e.pixelWidth,r=e.pixelHeight;if(this.background&&va.fillRect(i,0,0,n,r,{fillStyle:this.background}),va.strokeLine(i,0,r-1,n,r-1,{strokeStyle:this.divider}),t){const s=e.bpPerPixel,o=e.bpStart,a=o+n*s+1;for(let e of t){const t=e.start;if(t<o)continue;if(t>a)break;let n;if(this.posteriorProbability)n=e[this.valueProperty];else{const t=e[this.valueProperty];if(!t)continue;n=-Math.log10(t)}const l=this.useChrColors?e._f?e._f.chr:e.chr:n,h=this.colorScale.getColor(l),c=(this.dataRange.max-this.dataRange.min)/r,d=Math.round((t-o)/s),u=Math.max(this.dotSize,r-Math.round((n-this.dataRange.min)/c));h&&va.setProperties(i,{fillStyle:h,strokeStyle:"black"}),va.fillCircle(i,d,u,this.dotSize),e.px=d,e.py=u}}}paintAxis(e,t,i){va.fillRect(e,0,0,t,i,{fillStyle:"rgb(255, 255, 255)"});var n={font:"normal 10px Arial",textAlign:"right",strokeStyle:"black"};const r=(this.dataRange.max-this.dataRange.min)/i;if(this.posteriorProbability){const t=.1;for(let s=this.dataRange.min;s<this.dataRange.max;s+=t){const t=i-Math.round((s-this.dataRange.min)/r);va.strokeLine(e,45,t-2,50,t-2,n),va.fillText(e,s.toFixed(1),44,t+2,n)}}else{const t=Math.ceil(10*(this.dataRange.max-this.dataRange.min)/i);for(let s=this.dataRange.min;s<this.dataRange.max;s+=t){const t=i-Math.round((s-this.dataRange.min)/r);va.strokeLine(e,45,t,50,t,n),va.fillText(e,Math.floor(s),44,t+4,n)}}n.textAlign="center",this.posteriorProbability?va.fillText(e,"PPA",t/2,i/2,n,{rotate:{angle:-90}}):va.fillText(e,"-log10(pvalue)",t/2,i/2,n,{rotate:{angle:-90}})}popupData(e,t){void 0===t&&(t=e.viewport.cachedFeatures);let i=[];const n=e.viewport.trackView.track;if(t){let r=0;for(let s of t){const t=Math.abs(e.canvasX-s.px),o=Math.abs(e.canvasY-s.py),a=s[this.valueProperty];if(t<this.dotSize&&o<this.dotSize){if(r>0&&i.push("<HR/>"),5==r){i.push("...");break}if("function"==typeof s.popupData)i=i.concat(s.popupData());else{const e=s.realChr||s.chr,t=(s.realStart||s.start)+1;i.push({name:"chromosome",value:e}),i.push({name:"position",value:t}),i.push({name:"name",value:s.name}),n.posteriorProbability?i.push({name:"posterior probability",value:a}):i.push({name:"pValue",value:a})}r++}}}return i}menuItemList(){return Hi.numericDataMenuItems(this.trackView)}doAutoscale(e){if(e.length>0){const t=this.valueProperty,i=this.posteriorProbability,n=e.map((function(e){const n=e[t];return{value:i?n:-Math.log(n)/Math.LN10}}));this.dataRange=Sa(n)}else this.posteriorProbability?this.dataRange={min:this.config.min||0,max:this.config.max||1}:this.dataRange={min:this.config.max||25,max:this.config.min||0};return this.dataRange}}class Yf extends Eh{constructor(e,t){super(e,t)}init(e){super.init(e),this.autoscale=e.autoscale||void 0===e.max,this.dataRange={min:e.min||0,max:e.max},this.windowFunction=e.windowFunction||"mean",this.paintAxis=au,this.graphType=e.graphType||"bar",e._featureSource?(this.featureSource=e._featureSource,delete e._featureSource):this.featureSource=ad(this.config,this.browser.genome),this.visibilityWindow=-1,this.featureSource.visibilityWindow=this.visibilityWindow}async postInit(){if("function"==typeof this.featureSource.getHeader){if(this.header=await this.featureSource.getHeader(),this.disposed)return;if(this.sampleNames=this.header.columnNames.slice(3),this.setTrackProperties(this.header),this.header.hasOwnProperty("clickToHighlight")){let e=this.header.clickToHighlight;this.config.clickToHighlight=e,this.config.samplesClickedToHighlight={}}if(this.header.hasOwnProperty("highlight")){this.config.highlightSamples={};let e=this.header.highlight;Array.isArray(e)||(e=[e]);for(let t of e){const e=t.split(";");2===e.length&&(this.config.highlightSamples[e[0]]=e[1])}}}}menuItemList(){return Hi.numericDataMenuItems(this.trackView)}async getFeatures(e,t,i){const n=await this.featureSource.getFeatures({chr:e,start:0,end:Number.MAX_SAFE_INTEGER,visibilityWindow:this.visibilityWindow});let r,s;for(let e=1;e<n.length-1;e++)if(void 0===r&&n[e].end>t&&(r=e-1),void 0===s&&n[e].start>i){s=e+1;break}return void 0===r&&(r=0),void 0===s&&(s=n.length),n.slice(r,s)}draw(e){const{features:t,context:i,bpPerPixel:n,bpStart:r,pixelWidth:s,pixelHeight:o}=e,a=e=>(this.dataRange.max-e)/(this.dataRange.max-this.dataRange.min)*o,l=function(e){let t=Math.floor((e-r)/n);return isNaN(t)&&console.warn("isNaN(x). feature start "+$i(e)+" bp start "+$i(r)),t};if(t&&t.length>0&&(void 0===this.dataRange.min&&(this.dataRange.min=0),this.dataRange.max>this.dataRange.min)){const e=this.config.highlightSamples,n=this.config.onlyHandleClicksForHighlightedSamples,r=this.config.clickToHighlight;let s=-1,o={},h=[],c=[];this.clickDetectorCache={};for(let d of t){const t=l(d.start),u=l(d.end),f=s>=0?l(s):t;if(!isNaN(t)&&!isNaN(u)){this.clickDetectorCache[t]=[],this.clickDetectorCache[u]=[];for(let s=0;s<d.values.length;s++){const l=this.sampleNames[s],p=d.values[s],g=a(p);if(t-f>=1){const s=o[l],c=a(s),d=e&&e[l];d?h.push([f,c,t,g,d]):r&&l in this.config.samplesClickedToHighlight?h.push([f,c,t,g,this.config.samplesClickedToHighlight[l]]):va.strokeLine(i,f,c,t,g,{strokeStyle:"#D9D9D9"}),n&&!(l in e)||this.clickDetectorCache[t].push([f,c,t,g,l,d||"gray"])}if(u-t>=1){const s=e&&e[l];s?c.push([t,g,u,g,s]):r&&l in this.config.samplesClickedToHighlight?c.push([t,g,u,g,this.config.samplesClickedToHighlight[l]]):va.strokeLine(i,t,g,u,g,{strokeStyle:"gray"}),n&&!(l in e)||this.clickDetectorCache[u].push([t,g,u,g,l,s||"gray"])}o[l]=p}s=d.end}}for(let e of h)va.strokeLine(i,e[0],e[1],e[2],e[3],{strokeStyle:e[4],lineWidth:1.3});for(let e of c)va.strokeLine(i,e[0],e[1],e[2],e[3],{strokeStyle:e[4],lineWidth:2})}(e=>{if(this.config.hasOwnProperty("guideLines"))for(let t of this.config.guideLines)if(t.hasOwnProperty("color")&&t.hasOwnProperty("y")&&t.hasOwnProperty("dotted")){let i=a(t.y),n={strokeStyle:t.color,strokeWidth:2};t.dotted?va.dashedLine(e.context,0,i,e.pixelWidth,i,5,n):va.strokeLine(e.context,0,i,e.pixelWidth,i,n)}})(e)}doAutoscale(e){let t,i;return e.length>0?(t=Number.MAX_VALUE,i=-Number.MAX_VALUE,e.forEach((function(e){t=Math.min(t,...e.values),i=Math.max(i,...e.values)})),t-=.01,i+=.01):(t=0,i=100),{min:t,max:i}}clickedFeatures(e){const t=e.canvasX,i=e.canvasY;let n=null;for(n of Object.keys(this.clickDetectorCache))if(n=parseInt(n),n>=t)break;if(n){let e=Number.MAX_VALUE,o=[];const a=this.clickDetectorCache[n];for(let n of a){const r=n[0],s=n[2];if(t<r||t>s)return[];const a=n[1],l=n[3];if(i<Math.min(a,l)-10||i>Math.max(a,l)+10)continue;const h=Kf(t,i,r,a,s,l);h<e&&(o=[{name:n[4],color:n[5]}],e=h)}if(e<5){if(this.config.clickToHighlight){if(o[0].name in this.config.samplesClickedToHighlight)delete this.config.samplesClickedToHighlight[o[0].name];else if("any"===this.config.clickToHighlight){var r=["red","darkblue","green","teal","olivedrab","orange","maroon","purple","blue","gold"],s=r[Math.floor(Math.random()*(r.length+1))];this.config.samplesClickedToHighlight[o[0].name]=s}else this.config.samplesClickedToHighlight[o[0].name]=this.config.clickToHighlight;this.trackView.repaintViews()}return o}}return[]}popupData(e,t){void 0===t&&(t=this.clickedFeatures(e));const i=[];return t.forEach((function(e){for(let t of Object.keys(e))ka(e[t])&&i.push({name:t,value:e[t]})})),i}get supportsWholeGenome(){return!1}}function Kf(e,t,i,n,r,s){const o=r-i,a=s-n,l=Math.abs(o*(n-t)-(i-e)*a),h=Math.sqrt(o*o+a*a);return h>0?l/h:0}class Jf extends Eh{constructor(e,t){super(e,t),e.height||(this.height=300),this.arcOrientation=!1,this.theta=Math.PI/2,"bp"===e.format?this.featureSource=new tp(e,t.genome):this.featureSource=new Fc(e,t.genome)}async getFeatures(e,t,i){const n=this.visibilityWindow;return this.featureSource.getFeatures({chr:e,start:t,end:i,visibilityWindow:n})}draw(e){const t=e.context,i=Math.PI/2,n=e.pixelWidth,r=e.pixelHeight;e.viewportWidth;const s=e.bpPerPixel,o=e.bpStart,a=s,l=this.arcOrientation;va.fillRect(t,0,e.pixelTop,n,r,{fillStyle:"rgb(255, 255, 255)"});const h=e.features;if(h){ep(h,1);for(let e of h)if(e.startLeft){let n=Math.round((e.startLeft-o)/a),r=Math.round((e.startRight-o)/a),s=Math.round((e.endLeft-o)/a),h=Math.round((e.endRight-o)/a);t.fillStyle=e.color,t.strokeStyle=e.color,t.beginPath();let c=(n+h)/2,d=(h-n)/2,u=this.height,f=Math.PI+(Math.PI/2-i),p=2*Math.PI-(Math.PI/2-i);l?(u=0,t.arc(c,u,d,p,f),t.lineTo(h,u)):(t.arc(c,u,d,f,p),t.lineTo(s,u));const g=(r+s)/2,m=(s-r)/2,b=u;l?(t.arc(g,b,m,f,p,!0),t.lineTo(s,b)):(t.arc(g,b,m,p,f,!0),t.lineTo(n,b)),t.stroke(),t.fill(),e.drawState={x1:c,y1:u,r1:d,x2:g,y2:b,r2:m,sa:f,ea:p}}else{let n=Math.round((e.start-o)/a),r=Math.round((e.end-o)/a);t.strokeStyle=e.color,t.beginPath();let s=(n+r)/2,h=(r-n)/2,c=this.height,d=Math.PI+(Math.PI/2-i),u=2*Math.PI-(Math.PI/2-i);l?(c=0,t.arc(s,c,h,u,d)):t.arc(s,c,h,d,u),t.stroke(),e.drawState={x1:s,y1:c,r1:h,sa:d,ea:u}}}}clickedFeatures(e){const t=super.clickedFeatures(e),i=[];ep(t,-1);for(let n of t){const t=n.drawState,r=e.canvasX-t.x1,s=e.canvasY-t.y1,o=Math.sqrt(r*r+s*s),a=t.r1+3;let l,h;if(void 0===t.x2)l=o,h=t.r1-3;else{const i=e.canvasX-t.x2,n=e.canvasY-t.y2;l=Math.sqrt(i*i+n*n),h=t.r2-3}if(o<a&&l>h){i.push(n);break}}return i}popupData(e,t){if(void 0===t&&(t=this.clickedFeatures(e)),t&&t.length>0)return this.extractPopupData(t[0],this.getGenomeId())}menuItemList(){var e=this;return[{name:"Toggle arc direction",click:function(){e.arcOrientation=!e.arcOrientation,e.trackView.repaintViews()}}]}}function ep(e,t){e.sort((function(e,i){const n=void 0===e.score?-Number.MAX_VALUE:e.score,r=void 0===i.score?-Number.MAX_VALUE:i.score;return(void 0===t?1:t)*(n-r)}))}class tp{constructor(e,t){this.config=e,this.genome=t}async getFeatures({chr:e,start:t,end:i,bpPerPixel:n,visibilityWindow:r}){const s=this.genome;if(this.featureCache)return this.featureCache.queryFeatures(e,t,i);{const n=Ca(this.config),r=await ea.loadString(this.config.url,n);return this.featureCache=new ha(function(e){if(!e)return null;const t=sc(e);let i,n=!0;const r=[],s=[],o=[];for(;void 0!==(i=t.nextLine());){const e=i.split("\t");if(n&&i.startsWith("color:")){const t="rgb("+e[1]+","+e[2]+","+e[3]+")";r.push(t),e.length>4&&s.push(e[4])}else{n=!1;const t=e[0],i=Number.parseInt(e[1])-1,l=Number.parseInt(e[2])-1,h=Number.parseInt(e[3]),c=Number.parseInt(e[4]);var a=Number.parseInt(e[5]);const d=r[a];let u;u=i<=c?{chr:t,startLeft:Math.min(i,l),startRight:Math.max(i,l),endLeft:Math.min(h,c),endRight:Math.max(h,c),color:d,score:a}:{chr:t,startLeft:Math.min(h,c),startRight:Math.max(h,c),endLeft:Math.min(i,l),endRight:Math.max(i,l),color:d,score:a},u.start=u.startLeft,u.end=u.endRight,s.length>a&&(u.description=s[a]),o.push(u)}}return o}(r),s),this.featureCache.queryFeatures(e,t,i)}}}class ip{constructor(e){this.browser=e,this.type="ideogram",this.height=16,this.order=Number.MIN_SAFE_INTEGER,this.disableButtons=!0,this.ignoreTrackMenu=!0}async getFeatures(e,t,i){return[]}computePixelHeight(e){return this.height}draw({context:e,referenceFrame:t,pixelWidth:i,pixelHeight:n}){const r=t.chr,s=t.genome.getChromosome(r);if(void 0===s||i<=0||n<=0||"all"===r.toLowerCase())return;!function({ctx:e,chr:t,referenceFrame:i,genome:n,width:r,height:s,stainColors:o}){const a=1,l=.5*a,h=0;if(void 0===n)return;va.fillRect(e,0,0,r,s,{fillStyle:Oo.greyScale(255)});const c=n.getCytobands(t);if(c){const t=h+s/2,i=[],n=[];if(0===c.length)return;const d=r/c[c.length-1].end;e.beginPath(),va.roundRect(e,l,l+h,r-2*l,s-2*l,(s-2*l)/2,0,1),e.clip();for(let r=0;r<c.length;r++){const l=c[r],u=d*l.start,f=d*l.end;"c"===l.type?("p"===l.name.charAt(0)?(i[0]=u,n[0]=s+h,i[1]=u,n[1]=h,i[2]=f,n[2]=t):(i[0]=f,n[0]=s+h,i[1]=f,n[1]=h,i[2]=u,n[2]=t),e.fillStyle="rgb(150, 0, 0)",e.strokeStyle="rgb(150, 0, 0)",va.polygon(e,i,n,1,0)):(e.fillStyle=np(o,l),va.fillRect(e,u,a+h,f-u,s-2*a))}}e.strokeStyle=Oo.greyScale(41),va.roundRect(e,l,l+h,r-2*l,s-2*l,(s-2*l)/2,0,1)}({ctx:e,chr:r,referenceFrame:t,genome:t.genome,width:i,height:n,stainColors:[]});const o=Math.round(t.bpPerPixel*i),a=t.start;let l=s.bpLength;const h=t.genome.getCytobands(r);if(h&&h.length>0&&h[h.length-1].end&&(l=Math.max(l,h[h.length-1].end),s.bpLength=l),o<l){const t=o/l,r=a/l;let s=Math.floor(r*i),h=Math.floor(t*i);s=Math.max(0,s),s=Math.min(i-h,s),e.save(),e.strokeStyle="red",e.lineWidth=h<2?1:2;const c=s+e.lineWidth/2;h=h<2?1:h-e.lineWidth;const d=e.lineWidth/2,u=n-e.lineWidth;e.strokeRect(c,d,h,u),e.restore()}}dispose(){this.trackView=void 0}}function np(e,t){if("c"===t.type)return"rgb(150, 10, 10)";var i=t.stain,n=230;"p"===t.type&&(n=Math.floor(230-i/100*230));var r=e[n];return r||(r="rgb("+n+","+n+","+n+")",e[n]=r),r}let rp=new ga("Dark2");["GT/AG","CT/AC","GC/AG","CT/GC","AT/AC","GT/AT","non-canonical"].forEach((e=>{rp.getColor(e)}));const sp={};class op extends Eh{constructor(e,t){super(e,t)}init(e){super.init(e),this.type=e.type||"junctions",e._featureSource?(this.featureSource=e._featureSource,delete e._featureSource):this.featureSource=e.featureSource?e.featureSource:ad(e,this.browser.genome),this.margin=void 0===e.margin?10:e.margin,this.height||(this.height=100),void 0===e.colorByNumReadsThreshold&&(e.colorByNumReadsThreshold=5)}async postInit(){if("function"!=typeof this.featureSource.getHeader||(this.header=await this.featureSource.getHeader(),!this.disposed))return this.header&&this.setTrackProperties(this.header),void 0===this.visibilityWindow&&"function"==typeof this.featureSource.defaultVisibilityWindow&&(this.visibilityWindow=await this.featureSource.defaultVisibilityWindow()),this}get supportsWholeGenome(){return!1}async getFeatures(e,t,i,n){const r=this.visibilityWindow;return this.featureSource.getFeatures({chr:e,start:t,end:i,bpPerPixel:n,visibilityWindow:r})}computePixelHeight(e){return this.height}draw(e){const t=e.features,i=e.context,n=e.bpPerPixel,r=e.bpStart,s=e.pixelWidth,o=e.pixelHeight,a=r+s*n+1;if(this.config.isMergedTrack||va.fillRect(i,0,e.pixelTop,s,o,{fillStyle:"rgb(255, 255, 255)"}),t){sp.referenceFrame=e.viewport.referenceFrame,sp.referenceFrameStart=sp.referenceFrame.start,sp.referenceFrameEnd=sp.referenceFrameStart+sp.referenceFrame.toBP(e.viewport.getWidth()),sp.featureZoomOutTracker={};for(let e of t)if(!(e.end<r)){if(e.start>a)break;this.renderJunction(e,r,n,o,i)}}else console.log("No feature list")}renderJunction(e,t,i,n,r){e.isVisible=!1;const s=Math.round((e.start-t)/i),o=Math.round((e.end-t)/i),a=(s+o)/2;if(o-s<=3){if(a in sp.featureZoomOutTracker)return;sp.featureZoomOutTracker[a]=!0}if(this.config.hideAnnotatedJunctions&&"true"===e.attributes.annotated_junction)return;if(this.config.hideUnannotatedJunctions&&"false"===e.attributes.annotated_junction)return;if(this.config.hideMotifs&&this.config.hideMotifs.includes(e.attributes.motif))return;if(this.config.hideStrand===e.strand)return;if(this.config.minJunctionEndsVisible){let t=0;if(e.start>=sp.referenceFrameStart&&e.start<=sp.referenceFrameEnd&&(t+=1),e.end>=sp.referenceFrameStart&&e.end<=sp.referenceFrameEnd&&(t+=1),t<this.config.minJunctionEndsVisible)return}let l,h,c,d;if(e.attributes.uniquely_mapped){if(l=parseInt(e.attributes.uniquely_mapped),l<this.config.minUniquelyMappedReads)return;if(h=parseInt(e.attributes.multi_mapped),c=l+h,c<this.config.minTotalReads)return;if(c>0&&h/c>this.config.maxFractionMultiMappedReads)return;if(e.attributes.maximum_spliced_alignment_overhang&&parseInt(e.attributes.maximum_spliced_alignment_overhang)<this.config.minSplicedAlignmentOverhang)return}if(e.attributes.num_samples_with_this_junction){if(d=parseInt(e.attributes.num_samples_with_this_junction),this.config.minSamplesWithThisJunction&&d<this.config.minSamplesWithThisJunction)return;if(this.config.maxSamplesWithThisJunction&&d>this.config.maxSamplesWithThisJunction)return;if(e.attributes.num_samples_total&&(e.attributes.percent_samples_with_this_junction=100*d/Number(e.attributes.num_samples_total),this.config.minPercentSamplesWithThisJunction&&(e.attributes.percent_samples_with_this_junction<this.config.minPercentSamplesWithThisJunction||e.attributes.percent_samples_with_this_junction>this.config.maxPercentSamplesWithThisJunction)))return}const u=this.margin,f=this.height,p=u+.5*f;let g=u;const m=u+f-10,b=(s+a)/2,w=(a+o)/2;let v,y,_=1;e.attributes.line_width?_=Number(e.attributes.line_width):(void 0===this.config.thicknessBasedOn||"numUniqueReads"===this.config.thicknessBasedOn?_=l:"numReads"===this.config.thicknessBasedOn?_=c:"numSamplesWithThisJunction"===this.config.thicknessBasedOn&&void 0!==d&&(_=d),_=1+Math.log(_+1)/Math.log(12)),void 0===this.config.bounceHeightBasedOn||"random"===this.config.bounceHeightBasedOn?v=(e.start+e.end)%7:"distance"===this.config.bounceHeightBasedOn?v=6*(e.end-e.start)/(sp.referenceFrameEnd-sp.referenceFrameStart):"thickness"===this.config.bounceHeightBasedOn&&(v=2*_),g+=f*Math.max(7-v,0)/10,y=e.attributes.color?e.attributes.color:void 0===this.config.colorBy||"numUniqueReads"===this.config.colorBy?l>this.config.colorByNumReadsThreshold?"blue":"#AAAAAA":"numReads"===this.config.colorBy?c>this.config.colorByNumReadsThreshold?"blue":"#AAAAAA":"isAnnotatedJunction"===this.config.colorBy?"true"===e.attributes.annotated_junction?"#b0b0ec":"orange":"strand"===this.config.colorBy?"+"===e.strand?"#b0b0ec":"#ecb0b0":"motif"===this.config.colorBy?rp.getColor(e.attributes.motif):"#AAAAAA";let x="";e.attributes.label?x=e.attributes.label.replace(/_/g," "):void 0===this.config.labelWith||"uniqueReadCount"===this.config.labelWith?x=l:"totalReadCount"===this.config.labelWith?x=c:"numSamplesWithThisJunction"===this.config.labelWith?void 0!==d&&(x=d):"percentSamplesWithThisJunction"===this.config.labelWith?void 0!==e.attributes.percent_samples_with_this_junction&&(x=e.attributes.percent_samples_with_this_junction.toFixed(0)+"%"):"motif"===this.config.labelWith&&void 0!==e.attributes.motif&&(x+=e.attributes.motif),"uniqueReadCount"===this.config.labelWithInParen?x+=" ("+l+")":"totalReadCount"===this.config.labelWithInParen?x+=" ("+c+")":"multiMappedReadCount"===this.config.labelWithInParen?h>0&&(x+=" (+"+h+")"):"numSamplesWithThisJunction"===this.config.labelWithInParen?void 0!==d&&(x+=" ("+d+")"):"percentSamplesWithThisJunction"===this.config.labelWithInParen?void 0!==e.attributes.percent_samples_with_this_junction&&(x+=" ("+e.attributes.percent_samples_with_this_junction.toFixed(0)+"%)"):"motif"===this.config.labelWithInParen&&void 0!==e.attributes.motif&&(x+=` ${e.attributes.motif}`),e.isVisible=!0,r.beginPath(),r.moveTo(s,m),r.bezierCurveTo(b,g,w,g,o,m),r.lineWidth=_,r.strokeStyle=y,r.stroke();const k=(e,t,i,n)=>{e.beginPath(),e.moveTo(t,i),e.lineTo(t-n/2,i-n),e.lineTo(t+n/2,i-n),e.lineTo(t,i),e.closePath(),e.fill()};if(e.attributes.left_shape||e.attributes.right_shape){r.fillStyle=y;const t=r.lineWidth>2?10:7;e.attributes.left_shape&&k(r,s,m,t),e.attributes.right_shape&&k(r,o,m,t)}r.fillText(x,a-r.measureText(x).width/2,(7*g+p)/8)}clickedFeatures(e){return super.clickedFeatures(e).filter((function(e){return e.isVisible&&e.attributes}))}popupData(e,t){void 0===t&&(t=this.clickedFeatures(e));const i=e.genomicLocation,n=[];for(let e of t){const t="function"==typeof e.popupData?e.popupData(i):this.extractPopupData(e._f||e,this.getGenomeId());t&&(n.length>0&&n.push("<hr/><hr/>"),Array.prototype.push.apply(n,t))}return n}dispose(){this.trackView=void 0}}class ap{constructor(e){var t;this.config=e,this.url=(t=e.path||e.url).includes("//www.dropbox.com")?t.replace("//www.dropbox.com","//dl.dropboxusercontent.com"):t.startsWith("ftp://ftp.ncbi.nlm.nih.gov")?t.replace("ftp://","https://"):t}async read(e,t){const i=this.config.headers||{};if(void 0!==e&&t){const n="bytes="+e+"-"+(e+t-1);i.Range=n}let n=this.url.slice();if(this.config.oauthToken){const e=async function(e){return"function"==typeof e?await Promise.resolve(e()):e}(this.config.oauthToken);i.Authorization=`Bearer ${e}`}this.config.apiKey&&(n=function(e,t,i){const n=e.includes("?")?"&":"?";return e+n+t+"="+i}(n,"key",this.config.apiKey));const r=await fetch(n,{method:"GET",headers:i,redirect:"follow",mode:"cors"}),s=r.status;if(s>=400){const e=Error(r.statusText);throw e.code=s,e}return r.arrayBuffer()}}class lp{constructor(e){this.file=e.file,this.fetchSize=e.fetchSize||16e3,this.maxSize=e.maxSize||1e6,this.buffers=[]}async read(e,t){let i=this.buffers.filter((i=>i.overlaps(e,e+t)));for(let n of i)if(n.contains(e,e+t))return n.slice(e,e+t);if(0===i.length){let i=Math.max(t,this.fetchSize);this.buffers.sort(((e,t)=>e.start-t.start));const n=function(e,t,i){let n=i-1,r=e.length;for(;1+n<r;){const i=n+(r-n>>1);t(e[i])?r=i:n=i}return r}(this.buffers,(t=>t.start>e),0);n<this.buffers.length&&(i=Math.min(i,this.buffers[n].start-e));const r=e,s=await this.file.read(r,i),o=new hp(r,s);return this.addBuffer(o),o.slice(e,e+t)}{i.sort(((e,t)=>e.start-t.start));const n=[];let r=e;for(let e of i){if(r<e.start){const t=r,i=e.start-r,s=await this.file.read(t,i),o=new hp(t,s);n.push(o)}n.push(e),r=e.end}const s=e+t;if(s>r){const e=r,t=s-e,i=await this.file.read(e,t),o=new hp(e,i);n.push(o)}const o=n[0].start,a=function(e){const t=e.reduce(((e,t)=>e+t.byteLength),0),i=new Uint8Array(t);let n=0;for(let t of e)i.set(new Uint8Array(t),n),n+=t.byteLength;return i.buffer}(n.map((e=>e.buffer))),l=new hp(o,a),h=new Set(i);return this.buffers=this.buffers.filter((e=>!h.has(e))),this.addBuffer(l),l.slice(e,e+t)}}addBuffer(e){const t=this.buffers.reduce(((e,t)=>e+t.size),0)+e.size;if(t>this.maxSize){const e=t-this.maxSize;this.buffers.sort(((e,t)=>e.creationTime-t.creationTime));let i,n=0;for(i=0;i<this.buffers.length&&(n+=this.buffers[i].size,!(n>e));i++);this.buffers=i<this.buffers.length-1?this.buffers.slice(i):[]}e.size<=this.maxSize&&this.buffers.push(e)}}class hp{constructor(e,t){this.creationTime=Date.now(),this.start=e,this.buffer=t}slice(e,t){if(e<this.start||t-e>this.buffer.byteLength)throw Error("buffer bounds error");return this.buffer.slice(e-this.start,t-this.start)}get end(){return this.start+this.buffer.byteLength}get size(){return this.buffer.byteLength}contains(e,t){return e>=this.start&&t<=this.end}overlaps(e,t){return e>this.start&&e<this.end||t>this.start&&t<this.end}toString(){return`Buffer ${this.creationTime}   ${this.start} - ${this.end}`}}class cp{constructor(e){this.file=e}async read(e,t){if(0===t)return new ArrayBuffer;return(null!=e&&t?this.file.slice(e,e+t):this.file).arrayBuffer()}}async function dp(e,t,i=0){var n=new Map;for(let[r,s]of e.entries()){let e=await wp.unpack_from_async("<"+s,t,i);i+=wp.calcsize(s),1==e.length&&(e=e[0]),n.set(r,e)}return n}function up(e,t,i=0){var n=new Map;for(let[r,s]of e.entries()){let e=wp.unpack_from("<"+s,t,i);i+=wp.calcsize(s),1==e.length&&(e=e[0]),n.set(r,e)}return n}function fp(e){e||e()}function pp(e){var t="<"+Array.from(e.values()).join("");return wp.calcsize(t)}function gp(e,t=8){return Math.ceil(e/t)*t}var mp={u:"Uint",i:"Int",f:"Float"};function bp(e){var t,i,n=wp._is_big_endian(e);if(/S/.test(e))t="getString",i=0|((e.match(/S(\d*)/)||[])[1]||1);else{let[n,r,s]=e.match(/[<>=!@]?(i|u|f)(\d*)/);i=parseInt(s||4,10),t="get"+mp[r]+(8*i).toFixed()}return[t,n,i]}var wp=new class{constructor(){this.big_endian=function(){const e=new Uint8Array(4);return!((new Uint32Array(e.buffer)[0]=1)&e[0])}(),this.getters={s:"getUint8",b:"getInt8",B:"getUint8",h:"getInt16",H:"getUint16",i:"getInt32",I:"getUint32",l:"getInt32",L:"getUint32",q:"getInt64",Q:"getUint64",f:"getFloat32",d:"getFloat64"},this.byte_lengths={s:1,b:1,B:1,h:2,H:2,i:4,I:4,l:4,L:4,q:8,Q:8,f:4,d:8};let e=Object.keys(this.byte_lengths).join("");this.fmt_size_regex="(\\d*)(["+e+"])"}calcsize(e){for(var t,i=0,n=new RegExp(this.fmt_size_regex,"g");null!==(t=n.exec(e));){let 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r=65535&e|0,s=e>>>16&65535|0,o=0;for(;0!==i;){o=i>2e3?2e3:i,i-=o;do{r=r+t[n++]|0,s=s+r|0}while(--o);r%=65521,s%=65521}return r|s<<16|0},Pp=new Uint32Array((()=>{let e,t=[];for(var i=0;i<256;i++){e=i;for(var n=0;n<8;n++)e=1&e?3988292384^e>>>1:e>>>1;t[i]=e}return t})()),zp=(e,t,i,n)=>{const r=Pp,s=n+i;e^=-1;for(let i=n;i<s;i++)e=e>>>8^r[255&(e^t[i])];return-1^e},Hp={2:"need dictionary",1:"stream end",0:"","-1":"file error","-2":"stream error","-3":"data error","-4":"insufficient memory","-5":"buffer error","-6":"incompatible 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ev=0;ev<256;ev++)$p[ev]=ev>=252?6:ev>=248?5:ev>=240?4:ev>=224?3:ev>=192?2:1;$p[254]=$p[254]=1;var Wp={string2buf:e=>{if("function"==typeof TextEncoder&&TextEncoder.prototype.encode)return(new TextEncoder).encode(e);let t,i,n,r,s,o=e.length,a=0;for(r=0;r<o;r++)i=e.charCodeAt(r),55296==(64512&i)&&r+1<o&&(n=e.charCodeAt(r+1),56320==(64512&n)&&(i=65536+(i-55296<<10)+(n-56320),r++)),a+=i<128?1:i<2048?2:i<65536?3:4;for(t=new Uint8Array(a),s=0,r=0;s<a;r++)i=e.charCodeAt(r),55296==(64512&i)&&r+1<o&&(n=e.charCodeAt(r+1),56320==(64512&n)&&(i=65536+(i-55296<<10)+(n-56320),r++)),i<128?t[s++]=i:i<2048?(t[s++]=192|i>>>6,t[s++]=128|63&i):i<65536?(t[s++]=224|i>>>12,t[s++]=128|i>>>6&63,t[s++]=128|63&i):(t[s++]=240|i>>>18,t[s++]=128|i>>>12&63,t[s++]=128|i>>>6&63,t[s++]=128|63&i);return t},buf2string:(e,t)=>{const i=t||e.length;if("function"==typeof TextDecoder&&TextDecoder.prototype.decode)return(new TextDecoder).decode(e.subarray(0,t));let n,r;const s=new Array(2*i);for(r=0,n=0;n<i;){let 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A=e.state;i=e.next_in,C=e.input,n=i+(e.avail_in-5),r=e.next_out,S=e.output,s=r-(t-e.avail_out),o=r+(e.avail_out-257),a=A.dmax,l=A.wsize,h=A.whave,c=A.wnext,d=A.window,u=A.hold,f=A.bits,p=A.lencode,g=A.distcode,m=(1<<A.lenbits)-1,b=(1<<A.distbits)-1;e:do{f<15&&(u+=C[i++]<<f,f+=8,u+=C[i++]<<f,f+=8),w=p[u&m];t:for(;;){if(v=w>>>24,u>>>=v,f-=v,v=w>>>16&255,0===v)S[r++]=65535&w;else{if(!(16&v)){if(0==(64&v)){w=p[(65535&w)+(u&(1<<v)-1)];continue t}if(32&v){A.mode=12;break e}e.msg="invalid literal/length code",A.mode=30;break e}y=65535&w,v&=15,v&&(f<v&&(u+=C[i++]<<f,f+=8),y+=u&(1<<v)-1,u>>>=v,f-=v),f<15&&(u+=C[i++]<<f,f+=8,u+=C[i++]<<f,f+=8),w=g[u&b];i:for(;;){if(v=w>>>24,u>>>=v,f-=v,v=w>>>16&255,!(16&v)){if(0==(64&v)){w=g[(65535&w)+(u&(1<<v)-1)];continue i}e.msg="invalid distance code",A.mode=30;break e}if(_=65535&w,v&=15,f<v&&(u+=C[i++]<<f,f+=8,f<v&&(u+=C[i++]<<f,f+=8)),_+=u&(1<<v)-1,_>a){e.msg="invalid distance too far back",A.mode=30;break 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gg(){this.mode=0,this.last=!1,this.wrap=0,this.havedict=!1,this.flags=0,this.dmax=0,this.check=0,this.total=0,this.head=null,this.wbits=0,this.wsize=0,this.whave=0,this.wnext=0,this.window=null,this.hold=0,this.bits=0,this.length=0,this.offset=0,this.extra=0,this.lencode=null,this.distcode=null,this.lenbits=0,this.distbits=0,this.ncode=0,this.nlen=0,this.ndist=0,this.have=0,this.next=null,this.lens=new Uint16Array(320),this.work=new Uint16Array(288),this.lendyn=null,this.distdyn=null,this.sane=0,this.back=0,this.was=0}var mg,bg,wg=e=>{if(!e||!e.state)return ag;const t=e.state;return e.total_in=e.total_out=t.total=0,e.msg="",t.wrap&&(e.adler=1&t.wrap),t.mode=1,t.last=0,t.havedict=0,t.dmax=32768,t.head=null,t.hold=0,t.bits=0,t.lencode=t.lendyn=new Int32Array(852),t.distcode=t.distdyn=new Int32Array(592),t.sane=1,t.back=-1,rg},vg=e=>{if(!e||!e.state)return ag;const t=e.state;return t.wsize=0,t.whave=0,t.wnext=0,wg(e)},yg=(e,t)=>{let i;if(!e||!e.state)return ag;const n=e.state;return t<0?(i=0,t=-t):(i=1+(t>>4),t<48&&(t&=15)),t&&(t<8||t>15)?ag:(null!==n.window&&n.wbits!==t&&(n.window=null),n.wrap=i,n.wbits=t,vg(e))},_g=(e,t)=>{if(!e)return ag;const i=new gg;e.state=i,i.window=null;const n=yg(e,t);return n!==rg&&(e.state=null),n},xg=!0,kg=e=>{if(xg){mg=new Int32Array(512),bg=new Int32Array(32);let t=0;for(;t<144;)e.lens[t++]=8;for(;t<256;)e.lens[t++]=9;for(;t<280;)e.lens[t++]=7;for(;t<288;)e.lens[t++]=8;for(eg(1,e.lens,0,288,mg,0,e.work,{bits:9}),t=0;t<32;)e.lens[t++]=5;eg(2,e.lens,0,32,bg,0,e.work,{bits:5}),xg=!1}e.lencode=mg,e.lenbits=9,e.distcode=bg,e.distbits=5},Cg=(e,t,i,n)=>{let r;const s=e.state;return null===s.window&&(s.wsize=1<<s.wbits,s.wnext=0,s.whave=0,s.window=new Uint8Array(s.wsize)),n>=s.wsize?(s.window.set(t.subarray(i-s.wsize,i),0),s.wnext=0,s.whave=s.wsize):(r=s.wsize-s.wnext,r>n&&(r=n),s.window.set(t.subarray(i-n,i-n+r),s.wnext),(n-=r)?(s.window.set(t.subarray(i-n,i),0),s.wnext=n,s.whave=s.wsize):(s.wnext+=r,s.wnext===s.wsize&&(s.wnext=0),s.whave<s.wsize&&(s.whave+=r))),0},Sg=(e,t)=>{let i,n,r,s,o,a,l,h,c,d,u,f,p,g,m,b,w,v,y,_,x,k,C=0;const S=new Uint8Array(4);let A,E;const T=new Uint8Array([16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]);if(!e||!e.state||!e.output||!e.input&&0!==e.avail_in)return ag;i=e.state,i.mode===ug&&(i.mode=13),o=e.next_out,r=e.output,l=e.avail_out,s=e.next_in,n=e.input,a=e.avail_in,h=i.hold,c=i.bits,d=a,u=l,k=rg;e:for(;;)switch(i.mode){case 1:if(0===i.wrap){i.mode=13;break}for(;c<16;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(2&i.wrap&&35615===h){i.check=0,S[0]=255&h,S[1]=h>>>8&255,i.check=zp(i.check,S,2,0),h=0,c=0,i.mode=2;break}if(i.flags=0,i.head&&(i.head.done=!1),!(1&i.wrap)||(((255&h)<<8)+(h>>8))%31){e.msg="incorrect header check",i.mode=fg;break}if((15&h)!==dg){e.msg="unknown compression method",i.mode=fg;break}if(h>>>=4,c-=4,x=8+(15&h),0===i.wbits)i.wbits=x;else if(x>i.wbits){e.msg="invalid window size",i.mode=fg;break}i.dmax=1<<i.wbits,e.adler=i.check=1,i.mode=512&h?10:ug,h=0,c=0;break;case 2:for(;c<16;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(i.flags=h,(255&i.flags)!==dg){e.msg="unknown compression method",i.mode=fg;break}if(57344&i.flags){e.msg="unknown header flags set",i.mode=fg;break}i.head&&(i.head.text=h>>8&1),512&i.flags&&(S[0]=255&h,S[1]=h>>>8&255,i.check=zp(i.check,S,2,0)),h=0,c=0,i.mode=3;case 3:for(;c<32;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}i.head&&(i.head.time=h),512&i.flags&&(S[0]=255&h,S[1]=h>>>8&255,S[2]=h>>>16&255,S[3]=h>>>24&255,i.check=zp(i.check,S,4,0)),h=0,c=0,i.mode=4;case 4:for(;c<16;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}i.head&&(i.head.xflags=255&h,i.head.os=h>>8),512&i.flags&&(S[0]=255&h,S[1]=h>>>8&255,i.check=zp(i.check,S,2,0)),h=0,c=0,i.mode=5;case 5:if(1024&i.flags){for(;c<16;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}i.length=h,i.head&&(i.head.extra_len=h),512&i.flags&&(S[0]=255&h,S[1]=h>>>8&255,i.check=zp(i.check,S,2,0)),h=0,c=0}else i.head&&(i.head.extra=null);i.mode=6;case 6:if(1024&i.flags&&(f=i.length,f>a&&(f=a),f&&(i.head&&(x=i.head.extra_len-i.length,i.head.extra||(i.head.extra=new Uint8Array(i.head.extra_len)),i.head.extra.set(n.subarray(s,s+f),x)),512&i.flags&&(i.check=zp(i.check,n,f,s)),a-=f,s+=f,i.length-=f),i.length))break e;i.length=0,i.mode=7;case 7:if(2048&i.flags){if(0===a)break e;f=0;do{x=n[s+f++],i.head&&x&&i.length<65536&&(i.head.name+=String.fromCharCode(x))}while(x&&f<a);if(512&i.flags&&(i.check=zp(i.check,n,f,s)),a-=f,s+=f,x)break e}else i.head&&(i.head.name=null);i.length=0,i.mode=8;case 8:if(4096&i.flags){if(0===a)break e;f=0;do{x=n[s+f++],i.head&&x&&i.length<65536&&(i.head.comment+=String.fromCharCode(x))}while(x&&f<a);if(512&i.flags&&(i.check=zp(i.check,n,f,s)),a-=f,s+=f,x)break e}else i.head&&(i.head.comment=null);i.mode=9;case 9:if(512&i.flags){for(;c<16;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(h!==(65535&i.check)){e.msg="header crc mismatch",i.mode=fg;break}h=0,c=0}i.head&&(i.head.hcrc=i.flags>>9&1,i.head.done=!0),e.adler=i.check=0,i.mode=ug;break;case 10:for(;c<32;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}e.adler=i.check=pg(h),h=0,c=0,i.mode=11;case 11:if(0===i.havedict)return e.next_out=o,e.avail_out=l,e.next_in=s,e.avail_in=a,i.hold=h,i.bits=c,og;e.adler=i.check=1,i.mode=ug;case ug:if(t===ig||t===ng)break e;case 13:if(i.last){h>>>=7&c,c-=7&c,i.mode=27;break}for(;c<3;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}switch(i.last=1&h,h>>>=1,c-=1,3&h){case 0:i.mode=14;break;case 1:if(kg(i),i.mode=20,t===ng){h>>>=2,c-=2;break e}break;case 2:i.mode=17;break;case 3:e.msg="invalid block type",i.mode=fg}h>>>=2,c-=2;break;case 14:for(h>>>=7&c,c-=7&c;c<32;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if((65535&h)!=(h>>>16^65535)){e.msg="invalid stored block lengths",i.mode=fg;break}if(i.length=65535&h,h=0,c=0,i.mode=15,t===ng)break e;case 15:i.mode=16;case 16:if(f=i.length,f){if(f>a&&(f=a),f>l&&(f=l),0===f)break e;r.set(n.subarray(s,s+f),o),a-=f,s+=f,l-=f,o+=f,i.length-=f;break}i.mode=ug;break;case 17:for(;c<14;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(i.nlen=257+(31&h),h>>>=5,c-=5,i.ndist=1+(31&h),h>>>=5,c-=5,i.ncode=4+(15&h),h>>>=4,c-=4,i.nlen>286||i.ndist>30){e.msg="too many length or distance symbols",i.mode=fg;break}i.have=0,i.mode=18;case 18:for(;i.have<i.ncode;){for(;c<3;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}i.lens[T[i.have++]]=7&h,h>>>=3,c-=3}for(;i.have<19;)i.lens[T[i.have++]]=0;if(i.lencode=i.lendyn,i.lenbits=7,A={bits:i.lenbits},k=eg(0,i.lens,0,19,i.lencode,0,i.work,A),i.lenbits=A.bits,k){e.msg="invalid code lengths set",i.mode=fg;break}i.have=0,i.mode=19;case 19:for(;i.have<i.nlen+i.ndist;){for(;C=i.lencode[h&(1<<i.lenbits)-1],m=C>>>24,b=C>>>16&255,w=65535&C,!(m<=c);){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(w<16)h>>>=m,c-=m,i.lens[i.have++]=w;else{if(16===w){for(E=m+2;c<E;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(h>>>=m,c-=m,0===i.have){e.msg="invalid bit length repeat",i.mode=fg;break}x=i.lens[i.have-1],f=3+(3&h),h>>>=2,c-=2}else if(17===w){for(E=m+3;c<E;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}h>>>=m,c-=m,x=0,f=3+(7&h),h>>>=3,c-=3}else{for(E=m+7;c<E;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}h>>>=m,c-=m,x=0,f=11+(127&h),h>>>=7,c-=7}if(i.have+f>i.nlen+i.ndist){e.msg="invalid bit length repeat",i.mode=fg;break}for(;f--;)i.lens[i.have++]=x}}if(i.mode===fg)break;if(0===i.lens[256]){e.msg="invalid code -- missing end-of-block",i.mode=fg;break}if(i.lenbits=9,A={bits:i.lenbits},k=eg(1,i.lens,0,i.nlen,i.lencode,0,i.work,A),i.lenbits=A.bits,k){e.msg="invalid literal/lengths set",i.mode=fg;break}if(i.distbits=6,i.distcode=i.distdyn,A={bits:i.distbits},k=eg(2,i.lens,i.nlen,i.ndist,i.distcode,0,i.work,A),i.distbits=A.bits,k){e.msg="invalid distances set",i.mode=fg;break}if(i.mode=20,t===ng)break e;case 20:i.mode=21;case 21:if(a>=6&&l>=258){e.next_out=o,e.avail_out=l,e.next_in=s,e.avail_in=a,i.hold=h,i.bits=c,Zp(e,u),o=e.next_out,r=e.output,l=e.avail_out,s=e.next_in,n=e.input,a=e.avail_in,h=i.hold,c=i.bits,i.mode===ug&&(i.back=-1);break}for(i.back=0;C=i.lencode[h&(1<<i.lenbits)-1],m=C>>>24,b=C>>>16&255,w=65535&C,!(m<=c);){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(b&&0==(240&b)){for(v=m,y=b,_=w;C=i.lencode[_+((h&(1<<v+y)-1)>>v)],m=C>>>24,b=C>>>16&255,w=65535&C,!(v+m<=c);){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}h>>>=v,c-=v,i.back+=v}if(h>>>=m,c-=m,i.back+=m,i.length=w,0===b){i.mode=26;break}if(32&b){i.back=-1,i.mode=ug;break}if(64&b){e.msg="invalid literal/length code",i.mode=fg;break}i.extra=15&b,i.mode=22;case 22:if(i.extra){for(E=i.extra;c<E;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}i.length+=h&(1<<i.extra)-1,h>>>=i.extra,c-=i.extra,i.back+=i.extra}i.was=i.length,i.mode=23;case 23:for(;C=i.distcode[h&(1<<i.distbits)-1],m=C>>>24,b=C>>>16&255,w=65535&C,!(m<=c);){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(0==(240&b)){for(v=m,y=b,_=w;C=i.distcode[_+((h&(1<<v+y)-1)>>v)],m=C>>>24,b=C>>>16&255,w=65535&C,!(v+m<=c);){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}h>>>=v,c-=v,i.back+=v}if(h>>>=m,c-=m,i.back+=m,64&b){e.msg="invalid distance code",i.mode=fg;break}i.offset=w,i.extra=15&b,i.mode=24;case 24:if(i.extra){for(E=i.extra;c<E;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}i.offset+=h&(1<<i.extra)-1,h>>>=i.extra,c-=i.extra,i.back+=i.extra}if(i.offset>i.dmax){e.msg="invalid distance too far back",i.mode=fg;break}i.mode=25;case 25:if(0===l)break e;if(f=u-l,i.offset>f){if(f=i.offset-f,f>i.whave&&i.sane){e.msg="invalid distance too far back",i.mode=fg;break}f>i.wnext?(f-=i.wnext,p=i.wsize-f):p=i.wnext-f,f>i.length&&(f=i.length),g=i.window}else g=r,p=o-i.offset,f=i.length;f>l&&(f=l),l-=f,i.length-=f;do{r[o++]=g[p++]}while(--f);0===i.length&&(i.mode=21);break;case 26:if(0===l)break e;r[o++]=i.length,l--,i.mode=21;break;case 27:if(i.wrap){for(;c<32;){if(0===a)break e;a--,h|=n[s++]<<c,c+=8}if(u-=l,e.total_out+=u,i.total+=u,u&&(e.adler=i.check=i.flags?zp(i.check,r,u,o-u):Dp(i.check,r,u,o-u)),u=l,(i.flags?h:pg(h))!==i.check){e.msg="incorrect data check",i.mode=fg;break}h=0,c=0}i.mode=28;case 28:if(i.wrap&&i.flags){for(;c<32;){if(0===a)break e;a--,h+=n[s++]<<c,c+=8}if(h!==(4294967295&i.total)){e.msg="incorrect length check",i.mode=fg;break}h=0,c=0}i.mode=29;case 29:k=sg;break e;case fg:k=lg;break e;case 31:return hg;default:return ag}return e.next_out=o,e.avail_out=l,e.next_in=s,e.avail_in=a,i.hold=h,i.bits=c,(i.wsize||u!==e.avail_out&&i.mode<fg&&(i.mode<27||t!==tg))&&Cg(e,e.output,e.next_out,u-e.avail_out),d-=e.avail_in,u-=e.avail_out,e.total_in+=d,e.total_out+=u,i.total+=u,i.wrap&&u&&(e.adler=i.check=i.flags?zp(i.check,r,u,e.next_out-u):Dp(i.check,r,u,e.next_out-u)),e.data_type=i.bits+(i.last?64:0)+(i.mode===ug?128:0)+(20===i.mode||15===i.mode?256:0),(0===d&&0===u||t===tg)&&k===rg&&(k=cg),k},Ag={inflateReset:vg,inflateReset2:yg,inflateResetKeep:wg,inflateInit:e=>_g(e,15),inflateInit2:_g,inflate:Sg,inflateEnd:e=>{if(!e||!e.state)return ag;let t=e.state;return t.window&&(t.window=null),e.state=null,rg},inflateGetHeader:(e,t)=>{if(!e||!e.state)return ag;const i=e.state;return 0==(2&i.wrap)?ag:(i.head=t,t.done=!1,rg)},inflateSetDictionary:(e,t)=>{const i=t.length;let n,r,s;return e&&e.state?(n=e.state,0!==n.wrap&&11!==n.mode?ag:11===n.mode&&(r=1,r=Dp(r,t,i,0),r!==n.check)?lg:(s=Cg(e,t,i,i),s?(n.mode=31,hg):(n.havedict=1,rg))):ag},inflateInfo:"pako inflate (from Nodeca project)"};var Eg=function(){this.text=0,this.time=0,this.xflags=0,this.os=0,this.extra=null,this.extra_len=0,this.name="",this.comment="",this.hcrc=0,this.done=!1},Tg=Object.prototype.toString,{Z_NO_FLUSH:Mg,Z_FINISH:Rg,Z_OK:Lg,Z_STREAM_END:Ig,Z_NEED_DICT:Ng,Z_STREAM_ERROR:Fg,Z_DATA_ERROR:Bg,Z_MEM_ERROR:Og}=Up;function Dg(e){this.options=qp.assign({chunkSize:65536,windowBits:15,to:""},e||{});const t=this.options;t.raw&&t.windowBits>=0&&t.windowBits<16&&(t.windowBits=-t.windowBits,0===t.windowBits&&(t.windowBits=-15)),!(t.windowBits>=0&&t.windowBits<16)||e&&e.windowBits||(t.windowBits+=32),t.windowBits>15&&t.windowBits<48&&0==(15&t.windowBits)&&(t.windowBits|=15),this.err=0,this.msg="",this.ended=!1,this.chunks=[],this.strm=new Gp,this.strm.avail_out=0;let i=Ag.inflateInit2(this.strm,t.windowBits);if(i!==Lg)throw new Error(Hp[i]);if(this.header=new Eg,Ag.inflateGetHeader(this.strm,this.header),t.dictionary&&("string"==typeof t.dictionary?t.dictionary=Wp.string2buf(t.dictionary):"[object ArrayBuffer]"===Tg.call(t.dictionary)&&(t.dictionary=new Uint8Array(t.dictionary)),t.raw&&(i=Ag.inflateSetDictionary(this.strm,t.dictionary),i!==Lg)))throw new Error(Hp[i])}function Pg(e,t){const i=new Dg(t);if(i.push(e),i.err)throw i.msg||Hp[i.err];return i.result}Dg.prototype.push=function(e,t){const i=this.strm,n=this.options.chunkSize,r=this.options.dictionary;let s,o,a;if(this.ended)return!1;for(o=t===~~t?t:!0===t?Rg:Mg,"[object ArrayBuffer]"===Tg.call(e)?i.input=new Uint8Array(e):i.input=e,i.next_in=0,i.avail_in=i.input.length;;){for(0===i.avail_out&&(i.output=new Uint8Array(n),i.next_out=0,i.avail_out=n),s=Ag.inflate(i,o),s===Ng&&r&&(s=Ag.inflateSetDictionary(i,r),s===Lg?s=Ag.inflate(i,o):s===Bg&&(s=Ng));i.avail_in>0&&s===Ig&&i.state.wrap>0&&0!==e[i.next_in];)Ag.inflateReset(i),s=Ag.inflate(i,o);switch(s){case Fg:case Bg:case Ng:case Og:return this.onEnd(s),this.ended=!0,!1}if(a=i.avail_out,i.next_out&&(0===i.avail_out||s===Ig))if("string"===this.options.to){let e=Wp.utf8border(i.output,i.next_out),t=i.next_out-e,r=Wp.buf2string(i.output,e);i.next_out=t,i.avail_out=n-t,t&&i.output.set(i.output.subarray(e,e+t),0),this.onData(r)}else this.onData(i.output.length===i.next_out?i.output:i.output.subarray(0,i.next_out));if(s!==Lg||0!==a){if(s===Ig)return s=Ag.inflateEnd(this.strm),this.onEnd(s),this.ended=!0,!0;if(0===i.avail_in)break}}return!0},Dg.prototype.onData=function(e){this.chunks.push(e)},Dg.prototype.onEnd=function(e){e===Lg&&("string"===this.options.to?this.result=this.chunks.join(""):this.result=qp.flattenChunks(this.chunks)),this.chunks=[],this.err=e,this.msg=this.strm.msg};var zg=function(e,t){return(t=t||{}).raw=!0,Pg(e,t)},Hg={Inflate:Dg,inflate:Pg,inflateRaw:zg,ungzip:Pg,constants:Up},{Inflate:Ug,inflate:Vg,inflateRaw:qg,ungzip:jg}=Hg,$g=Vg,Wg=jg;var Gg=new Map([[1,function(e,t){let i=new Uint8Array(e);return $g(i).buffer}],[2,function(e,t){let i=e.byteLength,n=new Uint8Array(i),r=Math.floor(i/t),s=new DataView(e);for(var o=0;o<t;o++)for(var a=0;a<r;a++)n[o+a*t]=s.getUint8(o*r+a);return n.buffer}],[3,function(e,t){return function(e){for(var t=e.byteLength%2!=0,i=e.byteLength-4,n=new DataView(e),r=0,s=0,o=0;o<i-1;o+=2){s=(s+(r=(r+n.getUint16(o,!0))%65535))%65535}if(t){s=(s+(r=(r+n.getUint8(i-1))%65535))%65535}var[a,l]=wp.unpack_from(">HH",e,i);if(l%=65535,r!=(a%=65535)||s!=l)throw'ValueError("fletcher32 checksum invalid")'}(e),e.slice(0,-4)}]]),Zg=class{constructor(e,t){this.fh=e,this.offset=t,this.depth=null}async init(){this.all_nodes=new Map,await this._read_root_node(),await this._read_children()}async _read_children(){let e=this.depth;for(;e>0;){for(var t of this.all_nodes.get(e))for(var i of t.get("addresses"))this._add_node(await this._read_node(i,e-1));e--}}async _read_root_node(){let e=await this._read_node(this.offset,null);this._add_node(e),this.depth=e.get("node_level")}_add_node(e){let t=e.get("node_level");this.all_nodes.has(t)?this.all_nodes.get(t).push(e):this.all_nodes.set(t,[e])}async _read_node(e,t){let i=await this._read_node_header(e,t);return i.set("keys",[]),i.set("addresses",[]),i}async _read_node_header(e){throw"NotImplementedError: must define _read_node_header in implementation class"}},Qg=class extends Zg{B_LINK_NODE=new Map([["signature","4s"],["node_type","B"],["node_level","B"],["entries_used","H"],["left_sibling","Q"],["right_sibling","Q"]]);async _read_node_header(e,t){let i=await dp(this.B_LINK_NODE,this.fh,e);if(null!=t&&i.get("node_level")!=t)throw"node level does not match";return i}},Xg=class extends Qg{NODE_TYPE=0;constructor(e,t){super(e,t),this.ready=this.init()}async _read_node(e,t){let i=await this._read_node_header(e,t);e+=pp(this.B_LINK_NODE);let n=[],r=[],s=i.get("entries_used");for(var o=0;o<s;o++){let t=(await wp.unpack_from_async("<Q",this.fh,e))[0];e+=8;let i=(await wp.unpack_from_async("<Q",this.fh,e))[0];e+=8,n.push(t),r.push(i)}return n.push((await wp.unpack_from_async("<Q",this.fh,e))[0]),i.set("keys",n),i.set("addresses",r),i}symbol_table_addresses(){var e=[],t=this.all_nodes.get(0);for(var i of t)e=e.concat(i.get("addresses"));return e}},Yg=class extends Qg{NODE_TYPE=1;constructor(e,t,i){super(e,t),this.dims=i,this.ready=this.init()}async _read_node(e,t){let i=await this._read_node_header(e,t);e+=pp(this.B_LINK_NODE);var n=[],r=[];let s=i.get("entries_used");for(var o=0;o<s;o++){let[t,i]=await wp.unpack_from_async("<II",this.fh,e);e+=8;let s="<"+this.dims.toFixed()+"Q",o=wp.calcsize(s),a=await wp.unpack_from_async(s,this.fh,e);e+=o;let l=(await wp.unpack_from_async("<Q",this.fh,e))[0];e+=8,n.push(new Map([["chunk_size",t],["filter_mask",i],["chunk_offset",a]])),r.push(l)}return i.set("keys",n),i.set("addresses",r),i}async construct_data_from_chunks(e,t,i,n){var r,s,o;if(i instanceof Array){let e=i[0];if("REFERENCE"==e){if(8!=i[1])throw"NotImplementedError('Unsupported Reference type')";i="<u8";r="getUint64",s=!1,o=8}else{if("VLEN_STRING"!=e&&"VLEN_SEQUENCE"!=e)throw"NotImplementedError('datatype not implemented')";r="getVLENStruct",s=!1,o=16}}else[r,s,o]=bp(i);var a=t.reduce((function(e,t){return e*t}),1),l=e.reduce((function(e,t){return e*t}),1);let h=t.length;var c=1;e.slice().map((function(e){let t=c;return c*=e,t}));c=1;var d=t.slice().reverse().map((function(e){let t=c;return c*=e,t})).reverse(),u=new Array(a);let f=l*o;for(var p of this.all_nodes.get(0)){let i=p.get("keys"),a=p.get("addresses"),c=i.length;for(var g=0;g<c;g++){let c=i[g],p=a[g];var m;if(null==n)m=await this.fh.slice(p,p+f);else{m=await this.fh.slice(p,p+c.get("chunk_size"));let e=c.get("filter_mask");m=this._filter_chunk(m,e,n,o)}for(var b=c.get("chunk_offset").slice(),w=b.slice(),v=w.map((function(){return 0})),y=new vp(m),_=0;_<l;_++){for(var x=h-1;x>=0&&v[x]>=e[x];x--)v[x]=0,w[x]=b[x],x>0&&(v[x-1]+=1,w[x-1]+=1);if(w.slice(0,-1).every((function(e,i){return e<t[i]}))){let e=_*o,t=y[r](e,!s,o),i=w.slice(0,-1).reduce((function(e,t,i){return t*d[i]+e}),0);u[i]=t}v[h-1]+=1,w[h-1]+=1}}}return u}_filter_chunk(e,t,i,n){let r=i.length,s=e.slice();for(var o=r-1;o>=0;o--){if(t&1<<o)continue;let e=i[o],r=e.get("filter_id"),a=e.get("client_data");if(!Gg.has(r))throw'NotImplementedError("Filter with id:'+r.toFixed()+' not supported")';s=Gg.get(r)(s,n,a)}return s}},Kg=class extends Zg{B_TREE_HEADER=new Map([["signature","4s"],["version","B"],["node_type","B"],["node_size","I"],["record_size","H"],["depth","H"],["split_percent","B"],["merge_percent","B"],["root_address","Q"],["root_nrecords","H"],["total_nrecords","Q"]]);B_LINK_NODE=new Map([["signature","4s"],["version","B"],["node_type","B"]]);constructor(e,t){super(e,t),this.ready=this.init()}async _read_root_node(){let e=await this._read_tree_header(this.offset);this.address_formats=this._calculate_address_formats(e),this.header=e,this.depth=e.get("depth");let t=[e.get("root_address"),e.get("root_nrecords"),e.get("total_nrecords")],i=await this._read_node(t,this.depth);this._add_node(i)}async _read_tree_header(e){return await dp(this.B_TREE_HEADER,this.fh,this.offset)}_calculate_address_formats(e){let t=e.get("node_size"),i=e.get("record_size"),n=0,r=0,s=new Map,o=e.get("depth");for(var a=0;a<=o;a++){let e,l,h,c="",d="",u="";if(0==a?(e=0,l=0,h=0):1==a?(e=8,c="<Q",l=this._required_bytes(n),d=this._int_format(l),h=0):(e=8,c="<Q",l=this._required_bytes(n),d=this._int_format(l),h=this._required_bytes(r),u=this._int_format(h)),s.set(a,[e,l,h,c,d,u]),a<o){let s=e+l+h;n=this._nrecords_max(t,i,s),r>0?r*=n:r=n}}return s}_nrecords_max(e,t,i){return Math.floor((e-10-i)/(t+i))}_required_bytes(e){return Math.ceil(yp(e)/8)}_int_format(e){return["<B","<H","<I","<Q"][e-1]}async _read_node(e,t){let[i,n,r]=e,s=this._read_node_header(i,t);i+=pp(this.B_LINK_NODE);let o=this.header.get("record_size"),a=[];for(let e=0;e<n;e++){let e=await this._parse_record(this.fh,i,o);i+=o,a.push(e)}let l=[],h=this.address_formats.get(t);if(0!=t){let[e,t,r,s,o,a]=h;for(let h=0;h<=n;h++){let n=(await wp.unpack_from_async(s,this.fh,i))[0];i+=e;let h=(await wp.unpack_from_async(o,this.fh,i))[0];i+=t;let c=h;r>0&&(c=(await wp.unpack_from_async(a,this.fh,i))[0],i+=r),l.push([n,h,c])}}return s.set("keys",a),s.set("addresses",l),s}async _read_node_header(e,t){let i=await dp(this.B_LINK_NODE,this.fh,e);return i.set("node_level",t),i}*iter_records(){for(let e of this.all_nodes.values())for(let t of e)for(let e of t.get("keys"))yield e}_parse_record(e){throw"NotImplementedError"}},Jg=class extends Kg{NODE_TYPE=5;async _parse_record(e,t,i){let n=(await wp.unpack_from_async("<I",e,t))[0];t+=4;const r=await e.slice(t,t+7);return new Map([["namehash",n],["heapid",r]])}},em=class extends Kg{NODE_TYPE=6;async _parse_record(e,t,i){let n=(await wp.unpack_from_async("<Q",e,t))[0];t+=8;const r=await e.slice(t,t+7);return new Map([["creationorder",n],["heapid",r]])}},tm=class{constructor(e,t){this.ready=this.init(e,t)}async init(e,t){let i=await wp.unpack_from_async("<B",e,t+8);var n;if(0==i)n=await dp(lm,e,t),this._end_of_sblock=t+hm;else{if(2!=i&&3!=i)throw"unsupported superblock version: "+i.toFixed();n=await dp(cm,e,t),this._end_of_sblock=t+dm}if(n.get("format_signature")!=om)throw"Incorrect file signature: "+n.get("format_signature");if(8!=n.get("offset_size")||8!=n.get("length_size"))throw"File uses non-64-bit addressing";this.version=n.get("superblock_version"),this._contents=n,this._root_symbol_table=null,this._fh=e}async get_offset_to_dataobjects(){if(0==this.version){var e=new nm(this._fh,this._end_of_sblock,!0);return await e.ready,this._root_symbol_table=e,e.group_offset}if(2==this.version||3==this.version)return this._contents.get("root_group_address");throw"Not implemented version = "+this.version.toFixed()}},im=class{constructor(e,t){this.ready=this.init(e,t)}async init(e,t){let i=await dp(mm,e,t);fp("HEAP"==i.get("signature")),fp(0==i.get("version"));let n=i.get("address_of_data_segment"),r=await e.slice(n,n+i.get("data_segment_size"));i.set("heap_data",r),this._contents=i,this.data=r}get_object_name(e){let t=new Uint8Array(this.data).indexOf(0,e)-e;return wp.unpack_from("<"+t.toFixed()+"s",this.data,e)[0]}},nm=class{constructor(e,t,i=!1){this.ready=this.init(e,t,i)}async init(e,t,i){var n;if(i)n=new Map([["symbols",1]]);else{if("SNOD"!=(n=await dp(pm,e,t)).get("signature"))throw"incorrect node type";t+=gm}for(var r=[],s=n.get("symbols"),o=0;o<s;o++)r.push(await dp(um,e,t)),t+=fm;return i&&(this.group_offset=r[0].get("object_header_address")),this.entries=r,this._contents=n,this}assign_name(e){this.entries.forEach((function(t){let i=t.get("link_name_offset"),n=e.get_object_name(i);t.set("link_name",n)}))}get_links(e){var t={};return this.entries.forEach((function(i){let n=i.get("cache_type"),r=i.get("link_name");if(0==n||1==n)t[r]=i.get("object_header_address");else if(2==n){let n=i.get("scratch"),o=new ArrayBuffer(4),a=new Uint8Array(o);for(var s=0;s<4;s++)a[s]=n.charCodeAt(s);let l=wp.unpack_from("<I",o,0)[0];t[r]=e.get_object_name(l)}})),t}},rm=class{constructor(e,t){this.ready=this.init(e,t)}async init(e,t){let i=await dp(bm,e,t);t+=wm;let n=i.get("collection_size")-wm,r=await e.slice(t,t+n);this.heap_data=r,this._header=i,this._objects=null}get objects(){if(null==this._objects){this._objects=new Map;for(var e=0;e<=this.heap_data.byteLength-ym;){let t=up(vm,this.heap_data,e);if(0==t.get("object_index"))break;e+=ym;let i=this.heap_data.slice(e,e+t.get("object_size"));this._objects.set(t.get("object_index"),i),e+=gp(t.get("object_size"))}}return this._objects}},sm=class{constructor(e,t){this.fh=e,this.ready=this.init(t)}async init(e){let t=await dp(_m,this.fh,e);if(e+=pp(_m),fp("FRHP"==t.get("signature")),fp(0==t.get("version")),t.get("filter_info_size")>0)throw"Filter info size not supported on FractalHeap";if(t.get("btree_address_huge_objects")!=am)throw"Huge objects not implemented in FractalHeap";t.set("btree_address_huge_objects",null),t.get("root_block_address")==am&&t.set("root_block_address",null);let i=t.get("log2_maximum_heap_size"),n=this._min_size_nbits(i),r=new Map([["signature","4s"],["version","B"],["heap_header_adddress","Q"],["block_offset",`${n}B`]]);this.indirect_block_header=new Map(r),this.indirect_block_header_size=pp(r),2==(2&t.get("flags"))&&r.set("checksum","I"),this.direct_block_header=r,this.direct_block_header_size=pp(r);let s=t.get("maximum_direct_block_size");this._managed_object_offset_size=this._min_size_nbits(i);let o=Math.min(s,t.get("max_managed_object_size"));this._managed_object_length_size=this._min_size_integer(o);let a=t.get("starting_block_size"),l=t.get("table_width");if(!(a>0))throw"Starting block size == 0 not implemented";let h=Number(Math.floor(Math.log2(s)));fp(1n<<BigInt(h)==s);let c=Number(Math.floor(Math.log2(a)));fp(1n<<BigInt(c)==a),this._max_direct_nrows=h-c+2;let d=Math.floor(Math.log2(l));fp(1<<d==l),this._indirect_nrows_sub=d+c-1,this.header=t,this.nobjects=t.get("managed_object_count")+t.get("huge_object_count")+t.get("tiny_object_count");let u=[],f=t.get("root_block_address"),p=0;if(null!=f&&(p=t.get("indirect_current_rows_count")),p>0)for await(let e of this._iter_indirect_block(this.fh,f,p))u.push(e);else{let e=await this._read_direct_block(this.fh,f,a);u.push(e)}let g=u.reduce(((e,t)=>e+t.byteLength),0),m=new Uint8Array(g),b=0;u.forEach((e=>{m.set(new Uint8Array(e),b),b+=e.byteLength})),this.managed=m.buffer}async _read_direct_block(e,t,i){let n=await e.slice(t,t+i);return fp("FHDB"==up(this.direct_block_header,n).get("signature")),n}get_data(e){let t=wp.unpack_from("<B",e,0)[0],i=t>>4&3,n=1;if(0==i){fp(0==t>>6);let i=this._managed_object_offset_size,r=_p(i,e,n);n+=i,i=this._managed_object_length_size;let s=_p(i,e,n);return this.managed.slice(r,r+s)}throw 1==i?"tiny objectID not supported in FractalHeap":2==i?"huge objectID not supported in FractalHeap":"unknown objectID type in FractalHeap"}_min_size_integer(e){return this._min_size_nbits(yp(e))}_min_size_nbits(e){return Math.ceil(e/8)}async*_iter_indirect_block(e,t,i){let n=await dp(this.indirect_block_header,e,t);t+=this.indirect_block_header_size,fp("FHIB"==n.get("signature"));let r=n.get("block_offset").reduce(((e,t,i)=>e+(t<<8*i)),0);n.set("block_offset",r);let[s,o]=this._indirect_info(i),a=[];for(let i=0;i<s;i++){let n=(await wp.unpack_from_async("<Q",e,t))[0];if(t+=8,n==am)break;let r=this._calc_block_size(i);a.push([n,r])}let l=[];for(let i=s;i<s+o;i++){let n=(await wp.unpack_from_async("<Q",e,t))[0];if(t+=8,n==am)break;let r=this._calc_block_size(i),s=this._iblock_nrows_from_block_size(r);l.push([n,s])}for(let[t,i]of a){let n=await this._read_direct_block(e,t,i);yield n}for(let[t,i]of l)for await(let n of this._iter_indirect_block(e,t,i))yield n}_calc_block_size(e){let t=Math.floor(e/this.header.get("table_width"));return 2**Math.max(t-1,0)*this.header.get("starting_block_size")}_iblock_nrows_from_block_size(e){let t=Math.floor(Math.log2(e));return fp(2**t==e),t-this._indirect_nrows_sub}_indirect_info(e){let t,i,n=this.header.get("table_width"),r=e*n,s=this._max_direct_nrows*n;return e<=s?(t=r,i=0):(t=s,i=r-s),[t,i]}_int_format(e){return["B","H","I","Q"][e-1]}},om=wp.unpack_from("8s",new Uint8Array([137,72,68,70,13,10,26,10]).buffer)[0],am=wp.unpack_from("<Q",new Uint8Array([255,255,255,255,255,255,255,255]).buffer)[0],lm=new Map([["format_signature","8s"],["superblock_version","B"],["free_storage_version","B"],["root_group_version","B"],["reserved_0","B"],["shared_header_version","B"],["offset_size","B"],["length_size","B"],["reserved_1","B"],["group_leaf_node_k","H"],["group_internal_node_k","H"],["file_consistency_flags","L"],["base_address_lower","Q"],["free_space_address","Q"],["end_of_file_address","Q"],["driver_information_address","Q"]]),hm=pp(lm),cm=new Map([["format_signature","8s"],["superblock_version","B"],["offset_size","B"],["length_size","B"],["file_consistency_flags","B"],["base_address","Q"],["superblock_extension_address","Q"],["end_of_file_address","Q"],["root_group_address","Q"],["superblock_checksum","I"]]),dm=pp(cm),um=new Map([["link_name_offset","Q"],["object_header_address","Q"],["cache_type","I"],["reserved","I"],["scratch","16s"]]),fm=pp(um),pm=new Map([["signature","4s"],["version","B"],["reserved_0","B"],["symbols","H"]]),gm=pp(pm),mm=new Map([["signature","4s"],["version","B"],["reserved","3s"],["data_segment_size","Q"],["offset_to_free_list","Q"],["address_of_data_segment","Q"]]),bm=new Map([["signature","4s"],["version","B"],["reserved","3s"],["collection_size","Q"]]),wm=pp(bm),vm=new Map([["object_index","H"],["reference_count","H"],["reserved","I"],["object_size","Q"]]),ym=pp(vm),_m=new Map([["signature","4s"],["version","B"],["object_index_size","H"],["filter_info_size","H"],["flags","B"],["max_managed_object_size","I"],["next_huge_object_index","Q"],["btree_address_huge_objects","Q"],["managed_freespace_size","Q"],["freespace_manager_address","Q"],["managed_space_size","Q"],["managed_alloc_size","Q"],["next_directblock_iterator_address","Q"],["managed_object_count","Q"],["huge_objects_total_size","Q"],["huge_object_count","Q"],["tiny_objects_total_size","Q"],["tiny_object_count","Q"],["table_width","H"],["starting_block_size","Q"],["maximum_direct_block_size","Q"],["log2_maximum_heap_size","H"],["indirect_starting_rows_count","H"],["root_block_address","Q"],["indirect_current_rows_count","H"]]),xm=class{constructor(e,t){this.ready=this.init(e,t)}async init(e,t){let i=(await wp.unpack_from_async("<B",e,t))[0];if(1==i)var[n,r,s]=await this._parse_v1_objects(e,t);else{if(i!="O".charCodeAt(0))throw"InvalidHDF5File('unknown Data Object Header')";var[n,r,s]=await this._parse_v2_objects(e,t)}this.fh=e,this.msgs=n,this.msg_data=r,this.offset=t,this._global_heaps={},this._header=s,this._filter_pipeline=null,this._chunk_params_set=!1,this._chunks=null,this._chunk_dims=null,this._chunk_address=null}get dtype(){let e=this.find_msg_type(Xm)[0].get("offset_to_message");return new xp(this.fh,e).dtype}get chunks(){return this._get_chunk_params().then((()=>this._chunks))}get shape(){let e=this.find_msg_type(Zm)[0].get("offset_to_message");return async function(e,t){let i=(await wp.unpack_from_async("<B",e,t))[0];var n;if(1==i)fp(1==(n=await dp(Lm,e,t)).get("version")),t+=Im;else{if(2!=i)throw"InvalidHDF5File('unknown dataspace message version')";fp(2==(n=await dp(Nm,e,t)).get("version")),t+=Fm}let r=n.get("dimensionality"),s=await wp.unpack_from_async("<"+(2*r).toFixed()+"I",e,t);return s.filter((function(e,t){return t%2==0}))}(this.fh,e)}async get_filter_pipeline(){if(null!=this._filter_pipeline)return this._filter_pipeline;let e=this.find_msg_type(eb);if(!e.length)return this._filter_pipeline=null,this._filter_pipeline;var t=e[0].get("offset_to_message");let[i,n]=await wp.unpack_from_async("<BB",this.fh,t);t+=wp.calcsize("<BB");var r=[];if(1==i){await wp.unpack_from_async("<HI",this.fh,t),t+=wp.calcsize("<HI");for(var s=0;s<n;s++){let e=await dp(Wm,this.fh,t);t+=Gm;let i=gp(e.get("name_length"),8),n="<"+i.toFixed()+"s",s=(await wp.unpack_from_async(n,this.fh,t))[0];e.set("filter_name",s),t+=i,n="<"+e.get("client_data_values").toFixed()+"I";let o=await wp.unpack_from_async(n,this.fh,t);e.set("client_data",o),t+=4*e.get("client_data_values"),e.get("client_data_values")%2&&(t+=4),r.push(e)}}else{if(2!=i)throw`version ${i} is not supported`;for(let e=0;e<n;e++){let e=new Map,i=this.fh,n=(await wp.unpack_from_async("<H",i,t))[0];t+=2,e.set("filter_id",n);let s=0;n>255&&(s=(await wp.unpack_from_async("<H",i,t))[0],t+=2);let o=(await wp.unpack_from_async("<H",i,t))[0];t+=2;let a=(1&o)>0;e.set("optional",a);let l,h=(await wp.unpack_from_async("<H",i,t))[0];t+=2,s>0&&(l=(await wp.unpack_from_async(`${s}s`,i,t))[0],t+=s),e.set("name",l);let c=await wp.unpack_from_async(`<${h}i`,i,t);t+=4*h,e.set("client_data_values",c),r.push(e)}}return this._filter_pipeline=r,this._filter_pipeline}find_msg_type(e){return this.msgs.filter((function(t){return t.get("type")==e}))}async get_attributes(){let e={},t=this.find_msg_type(tb);for(let i of t){let t=i.get("offset_to_message"),[n,r]=await this.unpack_attribute(t);e[n]=r}return e}async get_fillvalue(){var e,t=this.find_msg_type(Ym)[0].get("offset_to_message");let i=(await wp.unpack_from_async("<B",this.fh,t))[0];var n,r,s;if(1==i||2==i)n=await dp(Vm,this.fh,t),t+=qm,e=n.get("fillvalue_defined");else{if(3!=i)throw'InvalidHDF5File("Unknown fillvalue msg version: "'+String(i);n=await dp(jm,this.fh,t),t+=$m,e=32&n.get("flags")}if(e?(r=(await wp.unpack_from_async("<I",this.fh,t))[0],t+=4):r=0,r){let[e,i,n]=bp(await this.dtype);s=new vp(await this.fh.slice(t,t+n))[e](t,!i,n)}else s=0;return s}async unpack_attribute(e){let t=(await wp.unpack_from_async("<B",this.fh,e))[0];var i,n;if(1==t)fp(1==(i=await dp(Sm,this.fh,e)).get("version")),e+=Am,n=8;else{if(3!=t)throw"unsupported attribute message version: "+t;fp(3==(i=await dp(Em,this.fh,e)).get("version")),e+=Tm,n=1}let r=i.get("name_size"),s=(await wp.unpack_from_async("<"+r.toFixed()+"s",this.fh,e))[0];var o;s=s.replace(/\x00$/,""),e+=gp(r,n);try{o=await new xp(this.fh,e).dtype}catch(e){return console.warn("Attribute "+s+" type not implemented, set to null."),[s,null]}e+=gp(i.get("datatype_size"),n);let a=await this.determine_data_shape(this.fh,e),l=a.reduce((function(e,t){return e*t}),1);if(e+=gp(i.get("dataspace_size"),n),5===o.datatype_class)h=await this.fh.slice(e,e+o.size);else{var h=await this._attr_value(o,this.fh,l,e);0==a.length&&(h=h[0])}return[s,h]}async determine_data_shape(e,t){let i=(await wp.unpack_from_async("<B",e,t))[0];var n;if(1==i)fp(1==(n=await dp(Lm,e,t)).get("version")),t+=Im;else{if(2!=i)throw"unknown dataspace message version";fp(2==(n=await dp(Nm,e,t)).get("version")),t+=Fm}let r=n.get("dimensionality");return await wp.unpack_from_async("<"+r.toFixed()+"Q",e,t)}async _attr_value(e,t,i,n){var r=new Array(i);if(e instanceof Array){let h=e[0];for(var s=0;s<i;s++)if("VLEN_STRING"==h){let i=e[2];var[o,a]=await this._vlen_size_and_data(t,n);const l=new TextDecoder(0==i?"ascii":"utf-8");r[s]=l.decode(a),n+=16}else if("REFERENCE"==h){var l=await wp.unpack_from_async("<Q",t,n);r[s]=l,n+=8}else{if("VLEN_SEQUENCE"!=h)throw"NotImplementedError";{let i=e[1];var[o,a]=this._vlen_size_and_data(t,n);r[s]=this._attr_value(i,a,o,0),n+=16}}}else{let[o,a,l]=bp(e);const h=await t.slice(n,n+i*l);let c=new vp(h,0),d=0;for(s=0;s<i;s++)r[s]=c[o](d,!a,l),d+=l}return r}async _vlen_size_and_data(e,t){let i=(await wp.unpack_from_async("<I",e,t))[0],n=await dp(Cm,e,t+4),r=n.get("collection_address");var s;return fp(n.get("collection_address")<Number.MAX_SAFE_INTEGER),r in this._global_heaps||(s=new rm(this.fh,r),await s.ready,this._global_heaps[r]=s),[i,(s=this._global_heaps[r]).objects.get(n.get("object_index"))]}async _parse_v1_objects(e,t){let i=await dp(Mm,e,t);fp(1==i.get("version"));let n=i.get("total_header_messages");for(var r=i.get("object_header_size"),s=t+pp(Mm),o=await e.slice(s,s+r),a=[[s,r]],l=0,h=0,c=new Array(n),d=0;d<n;d++){h>=r&&([s,r]=a[++l],h=0);let t=await dp(Bm,e,s+h),i=s+h+Om;if(t.set("offset_to_message",i),t.get("type")==ib){var[u,f]=await wp.unpack_from_async("<QQ",e,i);a.push([u,f])}h+=Om+t.get("size"),c[d]=t}return[c,o,i]}async _parse_v2_objects(e,t){var[i,n,r]=await this._parse_v2_header(e,t);t=r;for(var s=[],o=i.get("size_of_chunk_0"),a=e.slice(t,t+=o),l=[[r,o]],h=0,c=0;;){if(c>=o-Pm){let e=l[++h];if(null==e)break;[r,o]=e,c=0}let t=await dp(Dm,e,r+c),i=r+c+Pm+n;if(t.set("offset_to_message",i),t.get("type")==ib){var[d,u]=await wp.unpack_from_async("<QQ",e,i);l.push([d+4,u-4])}c+=Pm+t.get("size")+n,s.push(t)}return[s,a,i]}async _parse_v2_header(e,t){let i=await dp(Rm,e,t);var n;if(t+=pp(Rm),fp(2==i.get("version")),n=4&i.get("flags")?2:0,fp(0==(16&i.get("flags"))),32&i.get("flags")){let n=await wp.unpack_from_async("<4I",e,t);t+=16,i.set("access_time",n[0]),i.set("modification_time",n[1]),i.set("change_time",n[2]),i.set("birth_time",n[3])}let r=["<B","<H","<I","<Q"][3&i.get("flags")];return i.set("size_of_chunk_0",(await wp.unpack_from_async(r,e,t))[0]),[i,n,t+=wp.calcsize(r)]}async find_link(e){if(this._links){for(link of this._links)if(e===link[0])return link}else{const t=[];for await(const i of this.iter_links()){if(e===i[0])return i;t.push(i)}this._links=t}}async get_links(){const e=[];for await(const t of this.iter_links())e.push(t);return Object.fromEntries(e)}async*iter_links(){for(let e of this.msgs)e.get("type")==nb?yield*this._iter_links_from_symbol_tables(e):e.get("type")==Km?yield this._get_link_from_link_msg(e):e.get("type")==Qm&&(yield*this._iter_link_from_link_info_msg(e))}async*_iter_links_from_symbol_tables(e){fp(16==e.get("size"));let t=await dp(zm,this.fh,e.get("offset_to_message"));yield*this._iter_links_btree_v1(t.get("btree_address"),t.get("heap_address"))}async*_iter_links_btree_v1(e,t){let i=new Xg(this.fh,e);await i.ready;let n=new im(this.fh,t);await n.ready;for(let e of i.symbol_table_addresses()){let t=new nm(this.fh,e);await t.ready,t.assign_name(n),yield*Object.entries(t.get_links(n))}}async _get_link_from_link_msg(e){let t=e.get("offset_to_message");return await this._decode_link_msg(this.fh,t)[1]}async _decode_link_msg(e,t){let[i,n]=await wp.unpack_from_async("<BB",e,t);t+=2,fp(1==i);let r,s,o=2**(3&n),a=(16&n)>0,l=(4&n)>0;(8&n)>0?(r=(await wp.unpack_from_async("<B",e,t))[0],t+=1):r=0,fp([0,1].includes(r)),l&&(s=(await wp.unpack_from_async("<Q",e,t))[0],t+=8);let h=0;a&&(h=(await wp.unpack_from_async("<B",e,t))[0],t+=1);let c=0==h?"ascii":"utf-8",d=["<B","<H","<I","<Q"][3&n],u=(await wp.unpack_from_async(d,e,t))[0];t+=o;let f,p=new TextDecoder(c).decode(await e.slice(t,t+u));if(t+=u,0==r)f=(await wp.unpack_from_async("<Q",e,t))[0];else if(1==r){let i=(await wp.unpack_from_async("<H",e,t))[0];t+=2,f=new TextDecoder(c).decode(await e.slice(t,t+i))}return[s,[p,f]]}async*_iter_link_from_link_info_msg(e){let t=e.get("offset_to_message"),i=await this._decode_link_info_msg(this.fh,t),n=i.get("heap_address"),r=i.get("name_btree_address"),s=i.get("order_btree_address");null!=r&&(yield*this._iter_links_btree_v2(r,s,n))}async*_iter_links_btree_v2(e,t,i){let n,r=new sm(this.fh,i);await r.ready;const s=null!=t;s?(n=new em(this.fh,t),await n.ready):(n=new Jg(this.fh,e),await n.ready);let o=new Map;for(let e of n.iter_records()){let t=r.get_data(e.get("heapid")),[i,n]=await this._decode_link_msg(t,0);const a=s?i:n[0];o.set(a,n)}let a=Array.from(o.keys()).sort();for(let e of a)yield o.get(e)}async _decode_link_info_msg(e,t){let[i,n]=await wp.unpack_from_async("<BB",e,t);fp(0==i),t+=2,(1&n)>0&&(t+=8);let r=(2&n)>0?Um:Hm,s=await dp(r,e,t),o=new Map;for(let[e,t]of s.entries())o.set(e,t==km?null:t);return o}get is_dataset(){return this.find_msg_type(Zm).length>0}async get_data(){let e=this.find_msg_type(Jm)[0].get("offset_to_message");var[t,i,n,r]=await this._get_data_message_properties(e);if(0==n)throw"Compact storage of DataObject not implemented";return 1==n?this._get_contiguous_data(r):2==n?this._get_chunked_data(e):void 0}async _get_data_message_properties(e){let t,i,n,[r,s,o]=await wp.unpack_from_async("<BBB",this.fh,e);return 1==r||2==r?(t=s,i=o,n=e,n+=wp.calcsize("<BBB"),n+=wp.calcsize("<BI"),fp(1==i||2==i)):3!=r&&4!=r||(i=s,n=e,n+=wp.calcsize("<BB")),fp(r>=1&&r<=4),[r,t,i,n]}async _get_contiguous_data(e){let[t]=await wp.unpack_from_async("<Q",this.fh,e);const i=await this.shape,n=await this.dtype;if(t==km){let e=i.reduce((function(e,t){return e*t}),1);return new Array(e)}var r=i.reduce((function(e,t){return e*t}),1);if(n instanceof Array){let e=n[0];if("REFERENCE"==e){if(8!=n[1])throw"NotImplementedError('Unsupported Reference type')";return await this.fh.slice(t,t+r)}if("VLEN_STRING"==e){let e=n[2];const i=new TextDecoder(0==e?"ascii":"utf-8");var s=[];for(o=0;o<r;o++){const[e,n]=await this._vlen_size_and_data(this.fh,t);s[o]=i.decode(n),t+=16}return s}throw"NotImplementedError('datatype not implemented')"}if(/[<>=!@\|]?(i|u|f|S)(\d*)/.test(n)){let[e,i,s]=bp(n),a=new Array(r);const l=await this.fh.slice(t,t+s*r);let h=new vp(l);for(var o=0;o<r;o++)a[o]=h[e](o*s,!i,s);return a}if(5===n.datatype_class)return this.fh.slice(t,t+n.size);throw"not Implemented - no proper dtype defined"}async _get_chunked_data(e){if(await this._get_chunk_params(),this._chunk_address==km)return[];var t=new Yg(this.fh,this._chunk_address,this._chunk_dims);await t.ready;const i=await this.dtype,n=await this.shape,r=await this.chunks,s=await this.get_filter_pipeline();let o=await t.construct_data_from_chunks(r,n,i,s);if(i instanceof Array&&/^VLEN/.test(i[0])){let e=i[0];for(var a=0;a<o.length;a++){let[t,n,r]=o[a];var l;n in this._global_heaps?l=this._global_heaps[n]:(l=new rm(this.fh,n),await l.ready,this._global_heaps[n]=l);let s=l.objects.get(r);if("VLEN_STRING"==e){let e=i[2];const t=new TextDecoder(0==e?"ascii":"utf-8");o[a]=t.decode(s)}}}return o}async _get_chunk_params(){if(!this._chunk_params_set){this._chunk_params_set=!0;var e=this.find_msg_type(Jm)[0].get("offset_to_message"),[t,i,n,r]=await this._get_data_message_properties(e);if(2==n){var s;if(1==t||2==t){var o=(await wp.unpack_from_async("<Q",this.fh,r))[0];s=r+wp.calcsize("<Q")}else if(3==t){var[i,o]=await wp.unpack_from_async("<BQ",this.fh,r);s=r+wp.calcsize("<BQ")}fp(t>=1&&t<=3);var a="<"+(i-1).toFixed()+"I",l=await wp.unpack_from_async(a,this.fh,s);this._chunks=l,this._chunk_dims=i,this._chunk_address=o}}}};var km=wp.unpack_from("<Q",new Uint8Array([255,255,255,255,255,255,255,255]).buffer),Cm=new Map([["collection_address","Q"],["object_index","I"]]);pp(Cm);var Sm=new Map([["version","B"],["reserved","B"],["name_size","H"],["datatype_size","H"],["dataspace_size","H"]]),Am=pp(Sm),Em=new Map([["version","B"],["flags","B"],["name_size","H"],["datatype_size","H"],["dataspace_size","H"],["character_set_encoding","B"]]),Tm=pp(Em),Mm=new Map([["version","B"],["reserved","B"],["total_header_messages","H"],["object_reference_count","I"],["object_header_size","I"],["padding","I"]]),Rm=new Map([["signature","4s"],["version","B"],["flags","B"]]),Lm=new Map([["version","B"],["dimensionality","B"],["flags","B"],["reserved_0","B"],["reserved_1","I"]]),Im=pp(Lm),Nm=new Map([["version","B"],["dimensionality","B"],["flags","B"],["type","B"]]),Fm=pp(Nm),Bm=new Map([["type","H"],["size","H"],["flags","B"],["reserved","3s"]]),Om=pp(Bm),Dm=new Map([["type","B"],["size","H"],["flags","B"]]),Pm=pp(Dm),zm=new Map([["btree_address","Q"],["heap_address","Q"]]),Hm=new Map([["heap_address","Q"],["name_btree_address","Q"]]),Um=new Map([["heap_address","Q"],["name_btree_address","Q"],["order_btree_address","Q"]]),Vm=new Map([["version","B"],["space_allocation_time","B"],["fillvalue_write_time","B"],["fillvalue_defined","B"]]),qm=pp(Vm),jm=new Map([["version","B"],["flags","B"]]),$m=pp(jm),Wm=new Map([["filter_id","H"],["name_length","H"],["flags","H"],["client_data_values","H"]]),Gm=pp(Wm),Zm=1,Qm=2,Xm=3,Ym=5,Km=6,Jm=8,eb=11,tb=12,ib=16,nb=17,rb=class{constructor(e,t){null==t?(this.parent=this,this.file=this):(this.parent=t,this.file=t.file),this.name=e}async init(e){const t=this.file.index;t&&this.name in t?this._links=t[this.name]:this._links=await e.get_links(),this._dataobjects=e,this._attrs=null,this._keys=null}get keys(){return null==this._keys&&(this._keys=Object.keys(this._links)),this._keys.slice()}get values(){return this.keys.map((e=>this.get(e)))}length(){return this.keys.length}_dereference(e){if(!e)throw"cannot deference null reference";let t=this.file._get_object_by_address(e);if(null==t)throw"reference not found in file";return t}async get(e){if("number"==typeof e)return this._dereference(e);var t=ab(e);if("/"==t)return this.file;if("."==t)return this;if(/^\//.test(t))return this.file.get(t.slice(1));if(""!=function(e){let t="/",i=e.lastIndexOf(t)+1,n=e.slice(0,i),r=new RegExp("^"+t+"+$"),s=new RegExp(t+"$");n&&!r.test(n)&&(n=n.replace(s,""));return n}(t))var[i,n]=t.split(/\/(.*)/);else var i=t,n=".";if(!(i in this._links))throw i+" not found in group";var r=ab(this.name+"/"+i);let s=this._links[i];if("string"==typeof s)try{return this.get(s)}catch(e){return null}var o=new xm(this.file._fh,s);if(await o.ready,o.is_dataset){if("."!=n)throw r+" is a dataset, not a group";return new ob(r,o,this)}var a=new rb(r,this);return await a.init(o),a.get(n)}visit(e){return this.visititems(((t,i)=>e(t)))}visititems(e){var t=this.name.length;/\/$/.test(this.name)||(t+=1);for(var i=this.values.slice();i;){let n=i.shift();1==i.length&&console.log(n);let r=e(n.name.slice(t),n);if(null!=r)return r;n instanceof rb&&(i=i.concat(n.values))}return null}get attrs(){return null==this._attrs&&(this._attrs=this._dataobjects.get_attributes()),this._attrs}},sb=class extends rb{constructor(e,t,i){super("/",null),this.ready=this.init(e,t,i)}async init(e,t,i){var n=new tm(e,0);await n.ready;var r=await n.get_offset_to_dataobjects(),s=new xm(e,r);if(await s.ready,this.parent=this,this.file=this,this.name="/",this._dataobjects=s,this._attrs=null,this._keys=null,this._fh=e,this.filename=t||"",this.mode="r",this.userblock_size=0,i&&i.index)this.index=i.index;else{let t;if(i&&i.indexOffset)t=i.indexOffset;else{const e=await this.attrs;if(e.hasOwnProperty("_index_offset"))t=e._index_offset;else{const e=this.indexName||"_index",i=await s.find_link(e);i&&(t=i[1])}}if(t)try{const i=new xm(e,t);await i.ready;const n=await i.get_data(),r=Wg(n),s=(new TextDecoder).decode(r);this.index=JSON.parse(s)}catch(e){console.error(`Error loading index by offset ${e}`)}}this.index&&this.name in this.index?this._links=this.index[this.name]:this._links=await s.get_links()}_get_object_by_address(e){return this._dataobjects.offset==e?this:this.visititems((e=>{e._dataobjects.offset}))}},ob=class extends Array{constructor(e,t,i){super(),this.parent=i,this.file=i.file,this.name=e,this._dataobjects=t,this._attrs=null,this._astype=null}get value(){var e=this._dataobjects.get_data();return null==this._astype?this.getValue(e):e.astype(this._astype)}get shape(){return this._dataobjects.shape}get attrs(){return this._dataobjects.get_attributes()}get dtype(){return this._dataobjects.dtype}get fillvalue(){return this._dataobjects.get_fillvalue()}async to_array(){return function(e,t){const i=e.length,n=t.reduce(((e,t)=>e*t),1);i!==n&&console.warn(`shape product: ${n} does not match length of flattened array: ${i}`);let r=e;const s=t.slice(1).reverse();for(let e of s){const t=[],{length:i}=r;let n=0;for(;n<i;)t.push(r.slice(n,n+=e));r=t}return r}
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e=await t.read(),i=(new TextDecoder).decode(e);return JSON.parse(i)}return}(e),l=e.indexOffset,h=function(e){if(e.url)return cb(e.url);if(e.path)return cb(e.path);if(e.file)return e.file.name}(e),c=new sb(o,h,{index:a,indexOffset:l});return await c.ready,c}class hb{constructor(e){this.fileReader=e}async slice(e,t){return this.fileReader.read(e,t-e)}}function cb(e){const t=e.lastIndexOf("/");return t>0?e.substring(t+1):e}class db{constructor(e,t=1e5){this.h5_file=e,this.bin_size=t,this.h5_obj=void 0}async fetch(){return this.h5_obj||(this.h5_obj=await lb({url:this.h5_file,fetchSize:1e6,maxSize:2e8})),this.h5_obj}async get_keys(){return(await this.fetch()).keys}async get_rd_signal(e=this.bin_size){let t=await this.fetch(),i=t.keys,n=new ub(i),r=n.get_rd_bins(),s=n.get_snp_bins();this.available_bins=[...new Set(r,s)],this.available_bins.includes(e)||(e=this.available_bins.at(-1));const o=await t.get("rd_chromosomes");await o.dtype;let a=await o.value,l=await this.rd_stat(t,i,e);var h=[],c=[],d=[],u=[],f=[],p=[];for(let n of a){var g=`his_rd_p_${n}_${e}`;let r=await this.get_chr_signal(t,i,n,e,g,l);h=h.concat(r);var m=`his_rd_p_${n}_${e}_GC`;let s=await this.get_chr_signal(t,i,n,e,m,l);c=c.concat(s);let o=`his_rd_p_${n}_${e}_partition_GC_merge`,a=await this.get_chr_signal(t,i,n,e,o,l);d=d.concat(a);let b=await this.rd_call_combined(t,i,n,e,l);u=u.concat(b);let w=`snp_likelihood_${n}_${e}_mask`,v=await this.get_baf_signals(t,i,n,e,w);f=f.concat(v[0]),p=p.concat(v[1])}this.callers=[],0!=u.length&&this.callers.push("ReadDepth"),0!=u.length&&this.callers.push("2D");var b={},w={RD_Raw:h,RD_Raw_gc_coor:c,ReadDepth:d,"2D":u,BAF1:f,BAF2:p};return b[e]=w,b}decode_segments(e){let t=[],i=[];for(let n of e)4294967295==n?(t.push(i),i=[]):i.push(n);return t}async rd_call_combined(e,t,i,n,r){let s,o=[],a=`his_rd_p_${i}_${n}_partition_GC_mosaic_segments_2d`;if(t.includes(a)){const t=await e.get(a);let i=await t.value;s=this.decode_segments(i)}let l=`his_rd_p_${i}_${n}_partition_GC_mosaic_call_2d`;if(t.includes(l)){const t=await e.get(l);let a=await t.to_array();s.forEach(((e,t)=>{e.forEach(((e,s)=>{o.push({chr:i,start:e*n,end:(e+1)*n,value:a[0][t]/r[4]*2})}))}))}return o}async rd_stat(e,t,i){let n,r=`rd_stat_${i}_auto`;if(t.includes(r)){const t=await e.get(r);n=await t.value}return n}async get_chr_signal(e,t,i,n,r,s){let o=[];if(t.includes(r)){const t=await e.get(r);(await t.value).forEach(((e,t)=>{o.push({chr:i,start:t*n,end:(t+1)*n,value:e/s[4]*2})}))}return o}async get_baf_signals(e,t,i,n,r){let s=[],o=[];if(t.includes(r)){let t=await e.get(r);(await t.to_array()).forEach(((e,t)=>{let r=Math.max(...e);const a=e.indexOf(r);let l=Math.max(a/200,1-a/200);s.push({chr:i,start:t*n,end:(t+1)*n,value:-2*l}),.5!=l&&o.push({chr:i,start:t*n,end:(t+1)*n,value:-2*(1-l)})}))}return[s,o]}async get_baf_signals_v2(e,t,i,n,r){let s=[],o=[];if(t.includes(r)){let t=await e.get(r);(await t.to_array()).forEach(((e,t)=>{isNaN(e)||(s.push({chr:i,start:t*n,end:(t+1)*n,value:-2*(.5-e)}),.5!=e&&o.push({chr:i,start:t*n,end:(t+1)*n,value:-2*(.5+e)}))}))}return console.log(i,s,o),[s,o]}}class ub{constructor(e){this.signals=e}get_rd_bins(){let e=[];this.signals.forEach((t=>{let i=t.match(/^his_rd_p_(.*)_(\d+)$/);i&&e.push({chr:i[1],bin_size:i[2]})}));return[...new Set(e.map((e=>Number(e.bin_size))))]}get_snp_bins(){let e=[];this.signals.forEach((t=>{let i=t.match(/^snp_likelihood_(.*)_(\d+)_mask$/);i&&e.push({chr:i[1],bin_size:i[2]})}));return[...new Set(e.map((e=>Number(e.bin_size))))]}}function fb(e){let t=function(e){if(e.length<4)return e;let t,i,n,r,s,o;return t=e.slice().sort(((e,t)=>e-t)),t.length/4%1==0?(i=.5*(t[t.length/4]+t[t.length/4+1]),n=.5*(t[t.length*(3/4)]+t[t.length*(3/4)+1])):(i=t[Math.floor(t.length/4+1)],n=t[Math.ceil(t.length*(3/4)+1)]),r=n-i,s=n+1.5*r,o=i-1.5*r,t.filter((e=>e>=o&&e<=s))}(e);const i=t.length,n=t.reduce(((e,t)=>e+t))/i,r=Math.sqrt(t.map((e=>Math.pow(e-n,2))).reduce(((e,t)=>e+t))/i);return[n,r]}var pb={range_function:function(e,t,i){return Array(Math.ceil((t-e)/i)).fill(e).map(((e,t)=>e+t*i))},getDistParams:fb,linspace:function(e,t,i){if(void 0===i&&(i=Math.max(Math.round(t-e)+1,1)),i<2)return 1===i?[e]:[];var n=Array(i);for(let r=--i;r>=0;r--)n[r]=(r*t+(i-r)*e)/i;return n},GetFit:class{constructor(e){this.allBins=e}getValues(){return Object.values(this.allBins).reduce(((e,t)=>e.concat(t.filter((e=>e.binScore>0)).map((e=>e.binScore)))),[])}getMean(e){return e.reduce((function(e,t){return e+t}))/e.length}fit_data(){return fb(this.getValues())}histogram(e,t){const i=t[1]-t[0],n=[];e.forEach(((e,r)=>{t.forEach(((t,r)=>{if(n[t]||(n[t]={count:0}),t<=e&&e<t+i)return n[t].count++,!1}))}));const r=[];return n.forEach(((e,t)=>{r.push(e.count)})),r}}};function gb(e,t){return isNaN(e)||isNaN(t)||t<=0?NaN:0===e?.5:.5+.5*(mb(.5*t,.5,1)-mb(.5*t,.5,t/(t+e*e)))*Math.sign(e)}function mb(e,t,i){if(0==i)return 0;if(1==i)return 1;{let n=yb(e+t)-yb(e)-yb(t)+e*Math.log(i)+t*Math.log(1-i);return i<(e+1)/(e+t+2)?Math.exp(n)*bb(e,t,i)/e:1-Math.exp(n)*bb(t,e,1-i)/t}}function bb(e,t,i,n=1e3){let r=1,s=1,o=1,a=e+t,l=e+1,h=e-1,c=1-a*i/l;for(let d=0;d<=n;d++){let n=parseFloat(d+1),u=n+n,f=n*(t-n)*i/((h+u)*(e+u)),p=r+f*s,g=c+f*o;f=-(e+n)*(a+n)*i/((l+u)*(e+u));let m=g+f*c,b=r;if(s=p/m,o=g/m,r=(p+f*r)/m,c=1,Math.abs(r-b)<3e-7*Math.abs(r))return r}}function wb(e){if(0==e||1==e)return 1;return e*wb(e-1)}function vb(e){let t;var i=[75122.633153,80916.6278952,36308.2951477,8687.24529705,1168.92649479,83.8676043424,2.50662827511],n=0,r=1;if(0==e)t=1e99;else if(e%1==0)t=wb(e-1);else{for(let t=0;t<i.length;t++)n+=i[t]*Math.pow(e,t),r*=e+t;t=n*Math.pow(e+5.5,e+.5)*Math.exp(-(e+5.5))/r}return t}function yb(e){return Math.log(vb(e))}var _b={TdistributionCDF:gb,gamma:vb,t_test_1_sample:function(e,t,i,n){0==i&&(i=1);var r=(e-t)/i*Math.sqrt(n);return 1-gb(Math.abs(r),n-1)},t_test_2_samples:function(e,t,i,n,r,s){0==t&&(t=1),0==r&&(r=1);var o=(e-n)/Math.sqrt(t**2/i+r**2/s),a=(t**2/i+r**2/s)**2*(i-1)*(s-1)/(t**4*(s-1)/i**2+r**4*(i-1)/s**2);return 1-gb(Math.abs(o),parseInt(a+.5))}};function xb(e){return e.reduce((function(e,t){return e>t?e:t}))}function kb(e,t,i,n){return t*Math.exp(-1*(e-i)**2/(2*n**2))/Math.sqrt(2*Math.PI)/n}function Cb(e,t,i,n){return Math.exp(-1*(e-i)**2/(t**2+n**2))}function Sb(e,t){let i;try{i=e.reduce(((e,i,n)=>e+Math.min(i,t[n])))}catch{return console.log("Failed to find likelihood overlap: ",e,t),0}return i}function Ab(e,t,i,n){return 0==t&&0==n?{nl:.5*(e+i),ne:0}:{nl:(e*n*n+i*t*t)/(t*t+n*n),ne:Math.sqrt(t*t*n*n/(t*t+n*n))}}function Eb(e,t){let i=parseInt(t*(e.length-1)),n=t*(e.length-1)-i;return i<e.length-1?e[i]*(1-n)+e[i+1]*n:e[i]}function Tb(e){const t=e.length,i=Math.max(...e);let n=e.indexOf(i);n>Math.floor(t/2)&&(n=t-1-n);const r=(t/2-n)/(t+1),s=Math.floor((t/2+n)/2),o=t-1-s;let a=e.slice(s,o+1).reduce(((e,t)=>e+t),0)/e.reduce(((e,t)=>e+t),0);return n===Math.floor(t/2)&&(a=1),{mean:r,p:a}}var Mb=class{constructor(e,t){this.wigFeatures=e,this.binSize=t}get_fit(){var e=new pb.GetFit(this.wigFeatures),[t,i]=e.fit_data();return{globalMean:t,globalStd:i}}async call_2d(e=null,t=null,i="both",n=.1,r=0,s=10,o=0){let a=this.get_fit();this.globalMean=a.globalMean,this.globalStd=a.globalStd;let l=null==e?.05*this.binSize/3e9:e,h=null==t?parseInt(this.binSize/1e4):t,c=[],d=[],u=[],f=[],p=[],g=[];for(const[e,t]of Object.entries(this.wigFeatures)){let e=[],i=[],s=[];t.forEach(((t,n)=>{t.hets_count>4&&t.dp_count>h&&(e.push([n]),i.push(t.binScore),s.push(t.likelihood_score),delete t.likelihood_score)}));let o=[];for(let e=1;e<i.length;e++)o.push(Math.abs(i[e]-i[e-1]));let a=[0];for(let e=1;e<o.length;e++)a.push(Math.min(o[e-1],o[e]));a.push(0);let g=i.map(((e,t)=>Math.sqrt(Math.sqrt(e)**2+this.globalStd**2+Math.pow(a[t]/2,2)))),m=[];for(let t=0;t<e.length-1;t++){let n=0;try{n=Sb(s[t],s[t+1])}catch{console.log("Overlap failed: ",t,s[t],e[t+1],s[t+1])}let r=Cb(i[t],g[t],i[t+1],g[t+1]);m.push(r*n)}for(;m.length>0;){m=m.filter((e=>"number"==typeof e));let t=xb(m);if(isNaN(t)&&console.log("NaN value",m),t<l)break;let n,r,o=m.indexOf(t),a=Ab(i[o],g[o],i[o+1],g[o+1]);try{n=s[o].map(((e,t)=>e*s[o+1][t])),r=n.reduce(((e,t)=>e+t))}catch{console.log(s),console.log("max_overlap:",t,o,m.length),console.log("likelihood: ",o,s[o],s[o+1]),console.log("nlh: ",r)}if(i[o]=a.nl,g[o]=a.ne,s[o]=n.map((function(e){return e/r})),e[o].push(...e[o+1]),i.splice(o+1,1),g.splice(o+1,1),e.splice(o+1,1),s.splice(o+1,1),m.splice(o,1),o<m.length){let e=Cb(i[o],g[o],i[o+1],g[o+1])*Sb(s[o],s[o+1]);m[o]=e}if(o>0){let e=Cb(i[o-1],g[o-1],i[o],g[o])*Sb(s[o-1],s[o]);m[o-1]=e}}let b=-1;for(;;){m=[];for(let t=0;t<i.length;t++)for(let r=t;r<i.length;r++)e[r][0]-e[t].at(-1)<n*(e[t].length+e[r].length)&&m.push(Cb(i[t],g[t],i[r],g[r])*Sb(s[t],s[r]));if(0==m.length)break;let t=xb(m);if(t<l)break;let r=0,o=1;for(;r<e.length-1;){let a=Cb(i[r],g[r],i[o],g[o])*Sb(s[r],s[o]);if(e[o][0]-e[r].at(-1)<n*(e[r].length+e[o].length)&&a==t){let t=Ab(i[r],g[r],i[r+1],g[r+1]);i[r]=t.nl,g[r]=t.ne;let n=s[r].map(((e,t)=>e*s[r+1][t])),a=n.reduce(((e,t)=>e+t));s[r]=n.map((function(e){return e/a})),e[r].push(...e[r+1]),e[r]=e[r].sort(((e,t)=>e-t)),i.splice(o,1),g.splice(o,1),e.splice(o,1),s.splice(o,1),o>=e.length&&(r+=1,o=r+1)}else o+=1,o>=e.length&&(r+=1,o=r+1)}if(b==e.length)break;b=e.length}e.forEach(((e,n)=>{let o=Tb(s[n]);e.length>1&&(e.forEach(((e,s)=>{d.push(t[e]),o.mean<=r&&c.push(t[e]),t[e].segment_score=i[n]})),u.push(i[n]),f.push(g[n]),p.push(s[n]))}))}let m=parseInt(1e3*(1-o));0==m&&(m=1);let b=pb.linspace(o,1,m),w={},v={};for(let e=10;e>-1;e--)for(let t=0;t<e/2+1;t++){let n,r,s=e-t,o=b.map(((t,i)=>1-t+t*e/2)),a=e/2;e>0?(n=.5-t/(t+s),r=b.map(((e,i)=>.5-(1-e+e*t)/(2-2*e+(t+s)*e)))):(n=0,r=b.map(((e,t)=>0*e)));for(let i=0;i<u.length;i++){let l=kb(a*this.globalMean,1,u[i],f[i])*Eb(p[i],.5+n);i in v?v[i].push([e,t,s,l,1]):v[i]=[e,t,s,l,1];let h=0,c=0,d=0;o.forEach(((e,t)=>{if(!isNaN(r[t])){let n=kb(e*this.globalMean,1,u[i],f[i])*Eb(p[i],.5+r[t]);h+=n,n>c&&(c=n,d=b[t])}})),i in w?w[i].push([e,t,s,h/b.length,d]):w[i]=[e,t,s,h/b.length,d]}for(let e=0;e<u.length;e++)if("germline"==i)w[e].sort(((e,t)=>e[3]-t[3]));else if(w[e].sort(((e,t)=>e[3]-t[3])),"both"==i&&(v[e].sort(((e,t)=>e[3]-t[3])),v[e][0][3]>w[e][0][3])){let t=w[e].filter((t=>t[0]!=v[e][0][0]&&t[1]<=v[e][0][1]));w[e]=[v[e][0]].push(...t)}for(let e=0;e<u.length;e++)w[e][0][0],w[e][0][0],u[e],this.globalMean,_b.t_test_1_sample(this.globalMean,u[e],f[e],g[e])}return{binScore:this.formatDataStructure(this.wigFeatures,"binScore",this.globalMean),segment_score:this.formatDataStructure(this.wigFeatures,"segment_score",this.globalMean)}}formatDataStructure(e,t,i=1){const n=[];for(const[r,s]of Object.entries(e))s.forEach((e=>{var r={...e};1!=i&&(r.value=e[t]/i*2),n.push(r)}));return n}formatDataStructure_BAF(e,t=2){const i=[],n=[];for(const[t,r]of Object.entries(this.wigFeatures))r.forEach((t=>{var r={...t},s={...t};let o=t[e];.5!=o&&(s.value=-2*(1-o),n.push(s)),r.value=-2*o,i.push(r)}));return[i,n]}};function Rb(e){for(var t=1,i=1,n=1*e,r=1;r<50;r++)t*=r,n+=(i*=-1)*Math.pow(e,2*r+1)/(t*(2*r+1));return 2*n/Math.sqrt(3.14159265358979)}function Lb(e,t,i,n,r){var s=new Fb(i.slice(n,r));return 0==s.std&&(s.std=t>0?t*s.mean/e:1),Bb(e,s.mean,s.std,r-n)/(r-n)}function Ib(e,t,i,n,r){var s=new Fb(i.slice(n,r));if(s.mean<e){var o=(s.max-s.mean)/(t*Math.sqrt(2));return Math.pow(.5*(1+Rb(o)),r-n)}o=(s.min-s.mean)/(t*Math.sqrt(2));return Math.pow(.5*(1-Rb(o)),r-n)}function Nb(e,t,i,n,r,s,o=1e3){for(var a=Lb(e,t,i,n,r),l=0,h=!1;a>s&!h&l<o;){h=!0,l+=1;var[c,d,u,f]=[1e10,1e10,1e10,1e10];if(n>0&&(c=Lb(e,t,i,n-1,r)),r-n>2)var d=Lb(e,t,i,n+1,r),u=Lb(e,t,i,n,r-1);if(r<i.length)var f=Lb(e,t,i,n,r+1);Math.min[f]<a&&(h=!1,c==Math.min[f]&&(n-=1,a=c),elif(d==Math.min[f]),n+=1,a=d,elif(u==Math.min[f]),r-=1,a=u,elif(f==Math.min[f]),r+=1,a=f)}return a<=s?r:0}class Fb{constructor(e){this.data=e,this.mean=e.reduce(((e,t)=>e+t))/e.length,this.std=Math.sqrt(e.reduce(((e,t)=>(t-this.mean)**2))/e.length)}}function Bb(e,t,i,n){0==i&&(i=1);var r=(e-t)/i*Math.sqrt(n);return 1-_b.TdistributionCDF(Math.abs(r),n-1)}function Ob(e,t,i,n,r,s){0==t&&(t=1),0==r&&(r=1);var o=(e-n)/Math.sqrt(t**2/i+r**2/s),a=(t**2/i+r**2/s)**2*(i-1)*(s-1)/(t**4*(s-1)/i**2+r**4*(i-1)/s**2);return 1-_b.TdistributionCDF(Math.abs(o),parseInt(a+.5))}var Db=class{constructor(e,t,i){this.rd=e,this.mean=t,this.std=i,this.bin_bands=[2,3,4,5,6,7,8,10,12,14,16,20,24,28,32,40,48,56,64,80,96,112,128]}get_rd_signal_bandwidth(e){var t=[];return e.forEach(((e,i)=>{var n=0;n=e>this.mean/4?this.mean/(this.std**2*e):4/this.std**2,t.push(n)})),t}meanShiftCaller(e=3){var t={};return Object.entries(this.rd).forEach((([i,n])=>{var r=new Array(n.length).fill(!1),s=new Array(n.length);for(let e=0;e<n.length;e++)r[e]||(s[e]=n[e]);this.bin_bands.forEach(((t,i)=>{var o=r.map(((e,t)=>!e)),a=[];Object.entries(n).forEach((([e,t])=>{a.push(t.binScore)}));var l=[0],h=0;for(let e=0;e<r.length;e++)r[e]?h>0&&(l.push(l[l.length-1]+h-1),h=0):h+=1;l.shift();for(let i=0;i<e;i++){var c=this.get_rd_signal_bandwidth(a),d=new Array(a.length).fill(0);for(let e=0;e<a.length;e++)for(let i=e-3*t;i<=e+3*t+1;i++)if(!(i<0||i>=a.length||Math.abs(e-i)>=a.length)){var u=(i-e)*Math.exp(-.5*(i-e)**2/t**2)*Math.exp(-.5*(a[e]-a[i])**2*c[e]);d[e]+=u}for(var f=new Array,p=0;p<d.length-1;p++)d[p]<0&d[p+1]>=0&&f.push(p);f.push(d.length-1),f=f.concat(l).sort(((e,t)=>e-t)),f=Array.from(new Set(f));var g=0;for(p=0;p<f.length;p++){var m=a.slice(g,f[p]+1),b=m.reduce(((e,t)=>e+t))/m.length;a.fill(b,g,f[p]+1),g=f[p]+1}}p=0;for(var w=0;p<s.length;p++)o[p]&&(s[p]=a[w],w++);for(f=new Array,p=0;p<s.length-1;p++){Math.abs(s[p+1]-s[p])>.01&&f.push(p+1)}f.unshift(0),f.push(s.length),r=new Array(this.rd.length).fill(!1);for(p=1;p<f.length;p++){var v=[f[p-1],f[p]],y=[f[p-1],f[p-1]];if(!(p>1))continue;y[0]=f[p-2];var _=[f[p],f[p]];if(!(p<f.length-1))continue;_[1]=f[p+1];var x=v[1]-v[0],k=y[1]-y[0],C=_[1]-_[0];if(x<=1)continue;var S=new Fb(s.slice(v[0],v[1]));if(C<=15||k<=15||x<=15){var A=1.8*Math.sqrt(s[y[0]]/this.mean)*this.std;if(Math.abs(s[y[0]]-s[v[0]])<A)continue;if(A=1.8*Math.sqrt(s[_[0]]/this.mean)*this.std,Math.abs(s[_[0]]-s[v[0]])<A)continue}else{var E=s.slice(y[0],y[1]),T=new Fb(E),M=s.slice(_[0],_[1]),R=new Fb(M);if(Ob(S.mean,S.std,S.data.length,T.mean,T.std,T.data.length)>.01/genome_size*bin_size*(x+k))continue;if(Ob(S.mean,S.std,S.data.length,R.mean,R.std,R.data.length)>.01/genome_size*bin_size*(x+C))continue}if(Bb(this.mean,S.mean,S.std,S.data.length)>.05)continue;let e=a.slice(v[0],v[1]);var L=new Fb(e);r.fill(!0,v[0],v[1]),s.fill(L.mean,v[0],v[1])}})),t[i]=s})),t}call_mean_shift(e=3){for(var t=new Array(this.rd.length).fill(!1),i=new Array(this.rd.length),n=0;n<this.rd.length;n++)t[n]||(i[n]=this.rd[n]);return this.bin_bands.forEach(((n,r)=>{var s=t.map(((e,t)=>!e)),o=[];s.forEach(((e,t)=>{e&&o.push(this.rd[t])}));for(var a=[0],l=0,h=0;h<t.length;h++)t[h]?l>0&&(a.push(a[a.length-1]+l-1),l=0):l+=1;a.shift();for(var c=0;c<e;c++){var d=this.get_rd_signal_bandwidth(o),u=new Array(o.length).fill(0);for(h=0;h<o.length;h++)for(var f=h-3*n;f<=h+3*n+1;f++)if(!(f<0||f>=o.length||Math.abs(h-f)>=o.length)){var p=(f-h)*Math.exp(-.5*(f-h)**2/n**2)*Math.exp(-.5*(o[h]-o[f])**2*d[h]);u[h]+=p}var g=new Array;for(h=0;h<u.length-1;h++)u[h]<0&u[h+1]>=0&&g.push(h);g.push(u.length-1),g=g.concat(a).sort(((e,t)=>e-t)),g=Array.from(new Set(g));var m=0;for(h=0;h<g.length;h++){var b=o.slice(m,g[h]+1),w=b.reduce(((e,t)=>e+t))/b.length;o.fill(w,m,g[h]+1),m=g[h]+1}}for(h=0,f=0;h<i.length;h++)s[h]&&(i[h]=o[f],f++);for(g=new Array,h=0;h<i.length-1;h++){Math.abs(i[h+1]-i[h])>.01&&g.push(h+1)}g.unshift(0),g.push(i.length),t=new Array(this.rd.length).fill(!1);for(h=1;h<g.length;h++){var v=[g[h-1],g[h]],y=[g[h-1],g[h-1]];if(h>1){y[0]=g[h-2];var _=[g[h],g[h]];if(h<g.length-1){_[1]=g[h+1];var x=v[1]-v[0],k=y[1]-y[0],C=_[1]-_[0];if(!(x<=1)){var S=new Fb(i.slice(v[0],v[1]));if(C<=15||k<=15||x<=15){var A=1.8*Math.sqrt(i[y[0]]/this.mean)*this.std;if(Math.abs(i[y[0]]-i[v[0]])<A)continue;if(A=1.8*Math.sqrt(i[_[0]]/this.mean)*this.std,Math.abs(i[_[0]]-i[v[0]])<A)continue}else{var E=i.slice(y[0],y[1]),T=new Fb(E),M=i.slice(_[0],_[1]),R=new Fb(M);if(Ob(S.mean,S.std,S.data.length,T.mean,T.std,T.data.length)>3.483106931382794e-9*(x+k))continue;if(Ob(S.mean,S.std,S.data.length,R.mean,R.std,R.data.length)>3.483106931382794e-9*(x+C))continue}if(!(Bb(this.mean,S.mean,S.std,S.data.length)>.05)){var L=new Fb(this.rd.slice(v[0],v[1]));t.fill(!0,v[0],v[1]),i.fill(L.mean,v[0],v[1])}}}}}})),i}cnv_calling(e=1e5){var t=(t=.25)*this.mean,i=this.mean-t,n=this.mean+t,r=2971e6,s=this.meanShiftCaller(),o={},a=[];return Object.entries(s).forEach((([l,h])=>{for(var c=!1;!c;){c=!0;var d=new Array(1).fill(0);for(let e=0;e<h.length-1;e++){Math.abs(h[e+1]-h[e])>.01&&d.push(e+1)}d.push(h.length);for(let e=0;e<d.length-2;e++){var u=Math.abs(h[d[e]]-h[d[e+1]]);if(u<t){var f=u+1,p=u+1;if(e>0&&(f=Math.abs(h[d[e]]-h[d[e-1]])),e<d.length-3&&(p=Math.abs(s[d[e+1]]-h[d[e+2]])),u<f&&u<p){c=!1;var g=new Fb(h.slice(d[e],d[e+2]));h.fill(g.mean,d[e],d[e+2]),d.splice(e+1,e+1)}}}}var m=[];Object.entries(this.rd[l]).forEach((([e,t])=>{m.push(t.binScore)}));for(var b,w=new Array(h.length).fill(""),v=0,y=.05*e/r;v<h.length;){for(var _=v,x=v;v<h.length&h[v]<i;)v+=1;if((C=v)>x+1){var k=Nb(this.mean,this.std,m,x,C,y);if(k){var C=k;w.fill("D",x,C)}}for(x=v;v<h.length&h[v]>n;)v+=1;(C=v)>x+1&&(k=Nb(this.mean,this.std,m,x,C,y))&&(C=k,w.fill("A",x,C)),v==_&&(v+=1)}for(v=0;v<h.length;){for(;v<h.length&""!=w[v];)v+=1;for(x=v;v<h.length&h[v]<i;)v+=1;(C=v)>x+1&&(Ib(this.mean,this.std,m,x,C)<1682935038707506e-26&&w.fill(["d"]*(C-x),x,C),v-=1),v+=1}(v=0)<h.length&&(b=w[v]),x=0;for(var S=[...m];v<h.length;){for(;w[v]==b&&!((v+=1)>=w.length););if(v>x){var A=new Fb(S.slice(x,v));S.fill(A.mean,x,v)}v<h.length&&(b=w[v]),x=v}for(o[l]=S,v=0;v<h.length;){if(""==(b=w[v])){v+=1;continue}for(x=v;v<h.length&b==w[v];)v+=1;let t,i=new Fb(S.slice(x,v)).mean/this.mean;t="D"==b?"deletion":"duplication";let n={chr:l,start:e*x+1,end:e*v,size:e*(v-x+1),value:2*i,event_type:t};a.push(n)}})),[o,a]}};class Pb{constructor(e,t){this.allVariants=e,this.rowBinSize=1e4,this.binSize=t,this.binFactor=t/this.rowBinSize}async computeDepthFeatures(){const e=Object.keys(this.allVariants),t=[];for(let i of e){const e=this.allVariants[i];if(0===e.length)continue;const n=e[0];let r=0,s=0,o=n.start=n.start%this.binSize,a=o+this.binSize,l=0;for(let n of e){const e=n.start+1;l=Math.max(Math.floor((n.start-1)/this.binSize),0),e>a&&(s>0&&t.push({chr:i,start:o,end:a,value:r,bin:l,count:s}),r=0,o=n.start-n.start%this.binSize,a=o+this.binSize);const h=n.calls[9].info.DP;h&&(r+=Number.parseInt(h),s++)}s>0&&t.push({chr:i,start:o,end:a,value:r,bin:l,count:s})}return t}async computeReadDepth(){const e=Object.keys(this.allVariants);var t={};for(let n of e){const e=this.allVariants[n];var i;if(0!==e.length)for(let r of e){i=Math.max(Math.floor(r.start/this.rowBinSize),0),t[n]||(t[n]=[]),t[n][i]||(t[n][i]={chr:n,start:i*this.rowBinSize,end:(i+1)*this.rowBinSize,value:0,sum_score:0,count:0});const e=r.calls[9].info.DP;e&&(t[n][i].sum_score+=Number.parseInt(e),t[n][i].count++)}}var n={};for(let i of e){n[i]||(n[i]=[]);for(let e=0;e<t[i].length/this.binFactor;e++){const o=e;n[i][e]||(n[i][e]={chr:i,binScore:0,start:o*this.binSize,end:(o+1)*this.binSize});for(var r=10*e;r<10*e+10;r++)if(t[i][r]){var s=100*parseInt(t[i][r].sum_score/t[i][r].count);n[i][e].binScore+=s}}}return this.readDepthMeanshift(n)}readDepthMeanshift(e){var t=new pb.GetFit(e),[i,n]=t.fit_data(),r=new Db(e,i,n),s=r.meanShiftCaller(),o=r.cnv_calling();return Object.entries(e).forEach((([e,t])=>{t.forEach(((t,i)=>{t.partition_level=parseInt(s[e][i]),t.partition_call=parseInt(o[0][e][i])}))})),[this.formatDataStructure(e,"binScore",i),this.formatDataStructure(e,"partition_level",i),this.formatDataStructure(e,"partition_call",i),o[1]]}formatDataStructure(e,t,i=1){const n=[];for(const[r,s]of Object.entries(e))s.forEach((e=>{var r={...e};1!=i&&(r.value=e[t]/i*2),n.push(r)}));return n}async computeBAF_v2(){const e=Object.keys(this.allVariants),t={},i=[],n=[];for(let o of e){const e=this.allVariants[o];if(0===e.length)continue;var r;for(let a of e){if(r=Math.max(Math.floor(a.start/this.binSize),0),t[o]||(t[o]=[]),!t[o][r]){if(r>0){let e=r-1;if(t[o][e]){const r=this.get_max_min_score(t[o][e]);if(.5!=r.value){let e=Object.assign({},r);e.value=-2*(1-r.value),n.push(e)}r.value=-2*r.value,t[o][e]=r,i.push(t[o][e])}}t[o][r]={chr:o,start:r*this.binSize,end:(r+1)*this.binSize,value:0,count:0,likelihood_score:[],min_score:0}}const e=a.calls[9];let l=e.genotype,h=e.info.AD.split(","),c=h[0],d=h[1];if(0==l[0]&&1==l[1]||1==l[0]&&0==l[1]){if(0==t[o][r].likelihood_score.length)t[o][r].likelihood_score=pb.linspace(0,1,100).map(((e,t)=>zb(c,d,e)));else{var s=0;t[o][r].likelihood_score=pb.linspace(0,1,100).map(((e,i)=>{var n=t[o][r].likelihood_score[i]*zb(c,d,e);return s+=n,n})),t[o][r].likelihood_score=pb.linspace(0,1,100).map(((e,i)=>t[o][r].likelihood_score[i]/s))}t[o][r].count++}}const a=this.get_max_min_score(t[o][r]);if(.5!=a.value){let e=Object.assign({},a);e.value=-2*(1-a.value),n.push(e)}a.value=-2*a.value,t[o][r]=a,i.push(t[o][r])}return[i,n]}format_BAF_likelihood(e){const t=[];for(const[i,n]of Object.entries(e))n.forEach((e=>{var i={...e};.5!=e.value&&(i.value=1-e.value,t.push(i))}));return t}get_max_min_score(e){if(e.likelihood_score.length>0){const t=Math.max(...e.likelihood_score),i=e.likelihood_score.indexOf(t);e.value=Math.max(i/100,1-i/100),e.min_score=Math.min(i/100,1-i/100)}else e.score=0;return e}async getAllbins(){const e=await this.computeDepthFeatures();return new pb.GetFit(e).fit_data(),e}async read_rd_baf(e="ReadDepth"){const t=Object.keys(this.allVariants);var i={};for(let e of t){const t=this.allVariants[e];var n;if(0!==t.length)for(let r of t){n=Math.max(Math.floor(r.start/this.rowBinSize),0),i[e]||(i[e]=[]),i[e][n]||(i[e][n]={chr:e,start:n*this.rowBinSize,end:(n+1)*this.rowBinSize,dp_sum_score:0,dp_count:0,hets_count:0,hets:[]});const t=r.calls[9],s=t.info.DP;s&&(i[e][n].dp_sum_score+=Number.parseInt(s),i[e][n].dp_count++);let o=t.info.AD.split(","),a=t.genotype;if(0==a[0]&&1==a[1]||1==a[0]&&0==a[1]){i[e][n].hets_count++;let t=parseInt(o[0]),r=parseInt(o[1]);i[e][n].hets.push({ref:t,alt:r})}}}var r,s=this.adjust_bin_size(i);if("ReadDepth"==e){r=this.readDepthMeanshift(s);var o=this.formatDataStructure_BAF(s,"max_likelihood")}else if("2D"==e){let e=new Mb(s,this.binSize),t=await e.call_2d();r=[t.binScore,[],t.segment_score];o=e.formatDataStructure_BAF("max_likelihood")}return[r,o]}formatDataStructure_BAF(e,t,i=2){const n=[],r=[];for(const[i,s]of Object.entries(e))s.forEach((e=>{delete e.likelihood_score;var i={...e},s={...e};let o=e[t];.5!=o&&(s.value=-2*(1-o),r.push(s)),i.value=-2*o,n.push(i)}));return[n,r]}adjust_bin_size(e){const t=Object.keys(this.allVariants);var i={};for(let s of t){i[s]||(i[s]=[]);for(let t=0;t<e[s].length/this.binFactor;t++){const o=t;i[s][t]||(i[s][t]={chr:s,start:o*this.binSize,end:(o+1)*this.binSize,dp_count:0,hets_count:0,binScore:0,likelihood_score:[]});for(var n=10*t;n<10*t+10;n++)if(e[s][n]){var r=100*parseInt(e[s][n].dp_sum_score/e[s][n].dp_count);i[s][t].binScore+=r,i[s][t].dp_count+=e[s][n].dp_count,i[s][t].hets_count+=e[s][n].hets_count,0!=e[s][n].hets.length&&e[s][n].hets.forEach(((e,n)=>{if(0==i[s][t].likelihood_score.length)i[s][t].likelihood_score=pb.linspace(0,1,100).map(((t,i)=>zb(e.ref,e.alt,t)));else{var r=0;i[s][t].likelihood_score=pb.linspace(0,1,100).map(((n,o)=>{var a=i[s][t].likelihood_score[o]*zb(e.ref,e.alt,n);return r+=a,a})),i[s][t].likelihood_score=pb.linspace(0,1,100).map(((e,n)=>i[s][t].likelihood_score[n]/r))}}))}const a=this.get_max_min_score(i[s][t]);i[s][t].max_likelihood=a.value}}return i}}function zb(e,t,i,n=!0){return i**e*(1-i)**t+i**t*(1-i)**e}class Hb extends Eh{constructor(e,t){super(e,t),this.featureType="numeric",this.paintAxis=au,e.max||(this.defaultScale=!0,this.autoscale=!1),this.height=void 0!==e.height?e.height:250}async init(e){this.type="cnvpytor",this.graphType=e.graphType||"points",this.bin_size=e.bin_size||1e5,this.signal_name=e.signal_name||"rd_snp",this.cnv_caller=e.cnv_caller||"2D",this.colors=e.colors||["gray","black","green","blue"],super.init(e)}get supportsWholeGenome(){return!0}get_signals(){let e=[];return"rd_snp"==this.signal_name?e=["RD_Raw","RD_Raw_gc_coor",this.cnv_caller,"BAF1","BAF2"]:"rd"==this.signal_name?e=["RD_Raw","RD_Raw_gc_coor",this.cnv_caller]:"snp"==this.signal_name?e=["BAF1","BAF2"]:"cnh"==this.signal_name&&(e=[this.cnv_caller]),e}get_signal_colors(){return[{singal_name:"RD_Raw",color:this.colors[0]},{singal_name:"RD_Raw_gc_coor",color:this.colors[1]},{singal_name:"ReadDepth",color:this.colors[2]},{singal_name:"2D",color:this.colors[2]},{singal_name:"BAF1",color:this.colors[3]},{singal_name:"BAF2",color:this.colors[3]}]}async postInit(){if("vcf"==this.config.format){this.featureSource=ad(this.config,this.browser.genome),this.header=await this.getHeader();var e=this.featureSource.reader.features.reduce((function(e,t){return e[t.chr]=e[t.chr]||[],e[t.chr].push(t),e}),Object.create(null));const t=new Pb(e,this.bin_size);let i,n,r;this.wigFeatures_obj={},this.wigFeatures_obj[this.bin_size]={},"2D"==this.config.cnv_caller?(r=await t.read_rd_baf("2D"),i=r[0],n=r[1],this.wigFeatures_obj[this.bin_size]["2D"]=i[2],this.available_callers=["2D"]):(r=await t.read_rd_baf(),i=r[0],n=r[1],this.wigFeatures_obj[this.bin_size].ReadDepth=i[2],this.available_callers=["ReadDepth"]),this.wigFeatures_obj[this.bin_size].RD_Raw=i[0],this.wigFeatures_obj[this.bin_size].RD_Raw_gc_coor=i[1],this.wigFeatures_obj[this.bin_size].BAF1=n[0],this.wigFeatures_obj[this.bin_size].BAF2=n[1],this.available_bins=[this.bin_size],this.set_available_callers()}else this.cnvpytor_obj=new db(this.config.url,this.bin_size),this.wigFeatures_obj=await this.cnvpytor_obj.get_rd_signal(this.bin_size),this.available_bins=this.cnvpytor_obj.available_bins,this.available_callers=this.cnvpytor_obj.callers,this.set_available_callers();this.tracks=[];const t=[];this.signals=this.get_signals(),this.signal_colors=this.get_signal_colors();for(let e in this.wigFeatures_obj)for(const[i,n]of Object.entries(this.wigFeatures_obj[e]))if(this.signals.includes(i)){let e={type:"wig",isMergedTrack:!0};e.features=n,e.name=i,e.color=this.signal_colors.filter((e=>e.singal_name===i)).map((e=>e.color));const r=await this.browser.createTrack(e);r?(r.autoscale=!1,this.tracks.push(r)):console.warn("Could not create track "+e),"function"==typeof r.postInit&&t.push(r.postInit())}this.flipAxis=!!this.config.flipAxis&&this.config.flipAxis,this.logScale=!!this.config.logScale&&this.config.logScale,this.autoscale=this.config.autoscale,this.autoscale||(this.dataRange={min:this.config.min||0,max:this.config.max});for(let e of this.tracks)e.autoscale=!1,e.dataRange=this.dataRange;return Promise.all(t)}set_available_callers(){this.available_callers.includes(this.cnv_caller)||(this.available_callers.length>0?this.cnv_caller=this.available_callers[0]:this.cnv_caller=null)}async getHeader(){if(!this.header){if("function"==typeof this.featureSource.getHeader){const e=await this.featureSource.getHeader();e&&(this.callSets=e.callSets||[]),this.header=e}this.sampleNames=this.callSets?this.callSets.map((e=>e.name)):[]}return this.header}get height(){return this._height}set height(e){if(this._height=e,this.tracks)for(let t of this.tracks)t.height=e,t.config.height=e}menuItemList(){let e=[];void 0!==this.flipAxis&&e.push({label:"Flip y-axis",click:()=>{this.flipAxis=!this.flipAxis,this.trackView.repaintViews()}}),e=e.concat(Hi.numericDataMenuItems(this.trackView)),e.push("<hr/>"),e.push("Bin Sizes");for(let t of this.available_bins){const i=zi(t,t===this.bin_size);e.push({object:ft(i),click:async()=>{this.bin_size=t,await this.recreate_tracks(t),this.clearCachedFeatures(),this.trackView.updateViews(),this.trackView.repaintViews()}})}e.push("<hr/>"),e.push("Signal Type");let t={rd_snp:"RD and BAF Likelihood",rd:"RD Signal",snp:"BAF Likelihood"};for(let i in t){const n=zi(t[i],i===this.signal_name);e.push({object:ft(n),click:async()=>{this.signal_name=i,await this.recreate_tracks(this.bin_size),this.clearCachedFeatures(),this.trackView.updateViews(),this.trackView.repaintViews()}})}e.push("<hr/>"),e.push("CNV caller");for(let t of this.available_callers){const i=zi(t,t===this.cnv_caller);e.push({object:ft(i),click:async()=>{this.cnv_caller=t,await this.recreate_tracks(this.bin_size),this.clearCachedFeatures(),this.trackView.updateViews(),this.trackView.repaintViews()}})}return e}async recreate_tracks(e){this.tracks=[];const t=[];e in this.wigFeatures_obj||(this.wigFeatures_obj={...this.wigFeatures_obj,...await this.cnvpytor_obj.get_rd_signal(e)}),this.signals=this.get_signals(),this.signal_colors=this.get_signal_colors();for(const[i,n]of Object.entries(this.wigFeatures_obj[e]))if(this.signals.includes(i)){let e={type:"wig",isMergedTrack:!0};e.features=n,e.name=i,e.color=this.signal_colors.filter((e=>e.singal_name===i)).map((e=>e.color));const r=await this.browser.createTrack(e);r?(r.autoscale=!1,this.tracks.push(r)):console.warn("Could not create track "+e),"function"==typeof r.postInit&&t.push(r.postInit())}this.flipAxis=!!this.config.flipAxis&&this.config.flipAxis,this.logScale=!!this.config.logScale&&this.config.logScale,this.autoscale=this.config.autoscale,this.autoscale||(this.dataRange={min:this.config.min||0,max:this.config.max});for(let e of this.tracks)e.autoscale=!1,e.dataRange=this.dataRange;return Promise.all(t)}async getFeatures(e,t,i,n){if(this.tracks){const r=this.tracks.map((r=>r.getFeatures(e,t,i,n)));return Promise.all(r)}}getScaleFactor(e,t,i,n){return n?i/(Math.log10(t+1)-(e<=0?0:Math.log10(e+1))):i/(t-e)}computeYPixelValue(e,t){return(this.flipAxis?e-this.dataRange.min:this.dataRange.max-e)*t}computeYPixelValueInLogScale(e,t){let i=this.dataRange.max,n=this.dataRange.min;return i<=0?0:(n<=-1&&(n=0),n=n<=0?0:Math.log10(n+1),i=Math.log10(i+1),e=Math.log10(e+1),(this.flipAxis?e-n:i-e)*t)}draw(e){const t=e.features;if(!t)return;if(this.defaultScale&&("rd_snp"==this.signal_name?this.dataRange={min:this.config.min||this.dataRange.min||-2,max:this.config.max||this.dataRange.max||6}:"rd"==this.signal_name?this.dataRange={min:this.config.min||this.dataRange.min||0,max:this.config.max||this.dataRange.max||6}:"snp"==this.signal_name&&(this.dataRange={min:this.config.min||this.dataRange.min||-2,max:this.config.max||this.dataRange.max||0})),this.autoscale&&(this.dataRange=function(e,t){let i=0,n=-Number.MAX_VALUE;for(let e of t)for(let t of e)void 0===t.value||Number.isNaN(t.value)||(i=Math.min(i,t.value),n=Math.max(n,t.value));return{min:i,max:n}}(e.referenceFrame.chr,t)),this.tracks)for(let i=0,n=this.tracks.length;i<n;i++){const n=Object.assign({},e);n.features=t[i],this.tracks[i].dataRange=this.dataRange,this.tracks[i].flipAxis=this.flipAxis,this.tracks[i].logScale=this.logScale,this.graphType&&(this.tracks[i].graphType=this.graphType),this.tracks[i].draw(n)}const i=this.getScaleFactor(this.dataRange.min,this.dataRange.max,e.pixelHeight,this.logScale),n=e=>this.logScale?this.computeYPixelValueInLogScale(e,i):this.computeYPixelValue(e,i);if(this.config.hasOwnProperty("guideLines"))for(let t of this.config.guideLines)if(t.hasOwnProperty("color")&&t.hasOwnProperty("y")&&t.hasOwnProperty("dotted")){let i=n(t.y),r={strokeStyle:t.color,strokeWidth:1};t.dotted?va.dashedLine(e.context,0,i,e.pixelWidth,i,5,r):va.strokeLine(e.context,0,i,e.pixelWidth,i,r)}}popupData(e,t){const i=t||e.viewport.cachedFeatures;if(i&&i.length===this.tracks.length){const t=[];for(let n=0;n<this.tracks.length;n++){n>0&&t.push("<hr/>"),t.push(`<div style=background-color:rgb(245,245,245);border-bottom-style:dashed;border-bottom-width:1px;padding-bottom:5px;padding-top:10px;font-weight:bold;font-size:larger >${this.tracks[n].name}</div>`);const r=this.tracks[n].popupData(e,i[n]);t.push(...r)}return t}}}const Ub=new Map([["ideogram",(e,t)=>new ip(e,t)],["sequence",(e,t)=>new fl(e,t)],["feature",(e,t)=>new Yu(e,t)],["seg",(e,t)=>new If(e,t)],["mut",(e,t)=>new If(e,t)],["maf",(e,t)=>new If(e,t)],["wig",(e,t)=>new Tf(e,t)],["merged",(e,t)=>new Ff(e,t)],["alignment",(e,t)=>new af(e,t)],["interaction",(e,t)=>new Of(e,t)],["interact",(e,t)=>new Of(e,t)],["variant",(e,t)=>new $f(e,t)],["eqtl",(e,t)=>new Gf(e,t)],["gwas",(e,t)=>new Xf(e,t)],["arc",(e,t)=>new Jf(e,t)],["gcnv",(e,t)=>new Yf(e,t)],["junction",(e,t)=>new op(e,t)],["blat",(e,t)=>new rf(e,t)],["cnvpytor",(e,t)=>new Hb(e,t)]]),Vb=function(e,t){Ub.set(e,t)};var qb=Vb,jb=function(e,t,i){let n;switch(e){case"annotation":case"genes":case"fusionjuncspan":case"snp":n="feature";break;case"seg":case"maf":case"mut":n="seg";break;case"junctions":case"splicejunctions":n="junction";break;default:n=e}return Ub.has(n)?Ub.get(n)(t,i):void 0};class $b{constructor(e,t){const i=(new DOMParser).parseFromString(e,"text/xml");this.processRootNode(i,t);const n=i.getElementsByTagName("Resource"),r=i.getElementsByTagName("Track"),s=r&&r.length>0,o=[];this.tracks=o;const a=new Map;Array.from(n).forEach((function(e,t){var i={url:e.getAttribute("path"),indexURL:e.getAttribute("index"),order:t};a.set(i.url,i),s||o.push(i)})),s&&Array.from(r).forEach((function(e){const t=e.getElementsByTagName("Track");if(t&&t.length>0){const i={type:"merged",tracks:[]};Wb(e,i),o.push(i),Array.from(t).forEach((function(e){e.processed=!0;const t=e.getAttribute("id"),n=a.get(t);n&&(i.tracks.push(n),Wb(e,n),n.autoscale=!1,i.height=n.height)}))}else if(!e.processed){const t=e.getAttribute("id"),i=a.get(t);i&&(o.push(i),Wb(e,i))}}))}processRootNode(e,t){const i=e.getElementsByTagName("Session");!i||i.length;const n=i.item(0),r=n.getAttribute("genome"),s=n.getAttribute("locus"),o=n.getAttribute("ucscID");t&&t.hasOwnProperty(r)?this.genome=r:(this.reference={fastaURL:r},o&&(this.reference.id=o)),s&&(this.locus=s)}}function Wb(e,t){t.name=e.getAttribute("name");const i=e.getAttribute("color");i&&(t.color="rgb("+i+")");const n=e.getAttribute("altColor");i&&(t.altColor="rgb("+n+")");const r=e.getAttribute("height");r&&(t.height=parseInt(r));const s=e.getAttribute("autoScale");s&&(t.autoscale="true"===s);const o=e.getAttribute("autoscaleGroup");o&&(t.autoscaleGroup=o);const a=e.getAttribute("windowFunction");a&&(t.windowFunction=a);const l=e.getAttribute("visibilityWindow")||e.getAttribute("featureVisibilityWindow");l&&(t.visibilityWindow=l);const h=e.getAttribute("indexed");h&&(t.indexed="true"===h);const c=e.getAttribute("normalize");c&&(t.normalize="true"===c);const d=e.getElementsByTagName("DataRange");if(d.length>0){const e=d.item(0);t.min=Number(e.getAttribute("minimum")),t.max=Number(e.getAttribute("maximum")),t.logScale="LOG"===e.getAttribute("type")}}const Gb=Wi;class Zb{constructor(){this.attributes={},this.plinkLoaded=!1}async loadPlinkFile(e,t){t||(t={});var i=Ca(t);const n=await ea.loadString(e,i);var r=Gb(n);for(let e of r){var s=e.split(" ");this.attributes[s[1]]={familyId:s[0],fatherId:s[2],motherId:s[3],sex:s[4],phenotype:s[5]}}return this.plinkLoaded=!0,this}getAttributes(e){return this.attributes[e]}getAttributeNames(){return this.hasAttributes()?Object.keys(this.attributes[Object.keys(this.attributes)[0]]):[]}hasAttributes(){return Object.keys(this.attributes).length>0}}class Qb{constructor(e,t){this.geneColors={},this.gene=null,this.snp=null,this.genesCount=0,e&&(this.gene=e.toUpperCase(),this.geneColors[this.gene]=Xb[this.genesCount++]),t&&(this.snp=t.toUpperCase())}addGene(e){this.geneColors[e.toUpperCase()]||(this.geneColors[e.toUpperCase()]=Xb[this.genesCount++])}colorForGene(e){return this.geneColors[e.toUpperCase()]}}var Xb=[];Xb.push("rgb(228,26,28)"),Xb.push("rgb(55,126,184)"),Xb.push("rgb(77,175,74)"),Xb.push("rgb(166,86,40)"),Xb.push("rgb(152,78,163)"),Xb.push("rgb(255,127,0)"),Xb.push("rgb(247,129,191)"),Xb.push("rgb(153,153,153)"),Xb.push("rgb(255,255,51)"),Xb.push("rgb(102, 194, 165"),Xb.push("rgb(252, 141, 98"),Xb.push("rgb(141, 160, 203"),Xb.push("rgb(231, 138, 195"),Xb.push("rgb(166, 216, 84"),Xb.push("rgb(255, 217, 47"),Xb.push("rgb(229, 196, 148"),Xb.push("rgb(179, 179, 179"),Xb.push("rgb( 141, 211, 199"),Xb.push("rgb(255, 255, 179"),Xb.push("rgb(190, 186, 218"),Xb.push("rgb(251, 128, 114"),Xb.push("rgb(128, 177, 211"),Xb.push("rgb(253, 180, 98"),Xb.push("rgb(179, 222, 105"),Xb.push("rgb(252, 205, 229"),Xb.push("rgb(217, 217, 217"),Xb.push("rgb(188, 128, 189"),Xb.push("rgb(204, 235, 197"),Xb.push("rgb(255, 237, 111");class Yb{constructor(e,t,i,n,r){this.genome=e,this.chr=t,this.start=i,this.end=n,this.bpPerPixel=r,this.id=_t.guid()}extend(e){const t=Math.min(e.start,this.start),i=Math.max(e.end,this.end),n=(i-t)/(this.end-this.start);this.start=t,this.end=i,this.bpPerPixel*=n}calculateEnd(e){return this.start+this.bpPerPixel*e}calculateBPP(e,t){return(e-this.start)/t}set(e){this.chr=e.chr,this.start=e.start,this.bpPerPixel=e.bpPerPixel}toPixels(e){return e/this.bpPerPixel}toBP(e){return this.bpPerPixel*e}shiftPixels(e,t,i){const n=this.start,r=e*this.bpPerPixel;return this.start+=r,i&&this.clampStart(t),this.end=this.start+t*this.bpPerPixel,n!==this.start}clampStart(e){const t=this.genome.getChromosome(this.chr).bpStart||0;if(this.start=Math.max(t,this.start),e){const{bpLength:t}=this.genome.getChromosome(this.chr),i=t-e*this.bpPerPixel;this.start>i&&(this.start=i)}}async zoomWithScaleFactor(e,t,i,n){const r=void 0===n?this.start+this.toBP(i/2):n,{start:s,bpPerPixel:o}=this.start,{bpLength:a}=this.getChromosome(),l=t<1?e.minimumBases()/i:a/i;this.bpPerPixel=t<1?Math.max(this.bpPerPixel*t,l):Math.min(this.bpPerPixel*t,l);const h=this.bpPerPixel*i;this.start=r-.5*h,this.clampStart(i),this.end=this.start+h;(s!==this.start||o!==this.bpPerPixel)&&await e.updateViews(!0)}getChromosome(){return this.genome.getChromosome(this.chr)}getMultiLocusLabelBPLengthOnly(e){const t="&nbsp",i=Math.floor(this.start)+1,n=Math.round(this.start+this.bpPerPixel*e);return`${t}${this.chr}${t}${Ta(n-i)}${t}`}getMultiLocusLabelLocusOnly(e){const t="&nbsp",{chr:i,start:n,end:r}=this.getPresentationLocusComponents(e);return`${t}${i}:${n}-${r}${t}`}getMultiLocusLabel(e){const t="&nbsp",{chr:i,start:n,end:r}=this.getPresentationLocusComponents(e),s=Math.floor(this.start)+1;return`${t}${i}:${n}-${r}${t}${t}(${Ta(Math.round(this.start+this.bpPerPixel*e)-s)})${t}`}getPresentationLocusComponents(e){if("all"===this.chr)return{chr:this.chr};{const t=$i(Math.floor(this.start)+1),i=$i(Math.round(this.start+this.bpPerPixel*e));return{chr:this.chr,start:t,end:i}}}getLocusString(){if("all"===this.chr)return"all";{const e=$i(Math.floor(this.start)+1),t=$i(Math.round(this.end));return`${this.chr}:${e}-${t}`}}description(e){console.log(` ${e||""} referenceFrame - ${this.chr} bpp ${this.bpPerPixel.toFixed(3)} start ${$i(Math.round(this.start))} end ${$i(Math.round(this.end))} `)}}const Kb={timeout:5e3,type:"plain",url:"https://igv.org/genomes/locus.php?genome=$GENOME$&name=$FEATURE$",coords:0,chromosomeField:"chromosome",startField:"start",endField:"end",geneField:"gene",snpField:"snp"};async function Jb(e,t){if(void 0===t||""===t.trim())return;(t&&"all"===t.trim().toLowerCase()||"*"===t)&&(t="all");const i=t.split(" ");let n=e.searchConfig||Kb,r=[];const s=async i=>{let r=function(e,t){const i=t.split("\t");if(i.length>=3)try{const t=e.genome.getChromosomeName(i[0]),n=parseInt(i[1].replace(/,/g,""),10)-1,r=parseInt(i[2].replace(/,/g,""),10);if(!isNaN(n)&&!isNaN(r))return{chr:t,start:n,end:r}}catch(e){}const n=t.split(":"),r=n[0];if("all"===r&&e.genome.getChromosome(r))return{chr:r,start:0,end:e.genome.getChromosome(r).bpLength};if(void 0===e.genome.getChromosome(r))return;{const t={chr:e.genome.getChromosomeName(r),start:0,end:e.genome.getChromosome(r).bpLength};if(n.length>1){let i,r=n[1].split("-");if(r.length>2){if(!n[1].startsWith("-"))return;{const e=n[1].indexOf("-",1);if(e>0){r=[n[1].substring(0,e),n[1].substring(e+1)]}}}if(i=r[0].replace(/,/g,""),isNaN(i))return;if(t.start=parseInt(i,10)-1,t.end=t.start+1,1===r.length&&(t.start-=20,t.end+=20),2===r.length){if(i=r[1].replace(/,/g,""),isNaN(i))return;if(t.end=parseInt(i,10),t.start<0&&!e.isSoftclipped()){const e=-t.start;t.start+=e,t.end+=e}}}return t}}(e,i);if(!r){const n=e.genome.featureDB.get(i.toUpperCase());n&&(r={chr:n.chr,start:n.start,end:n.end,gene:n.name,locusSearchString:t})}if(!r&&e.config&&!1!==e.config.search)try{r=await async function(e,t,i){let n=i.url.replace("$FEATURE$",t.toUpperCase());n.indexOf("$GENOME$")>-1&&(n=n.replace("$GENOME$",e.genome.id?e.genome.id:"hg19"));const r=i.timeout?{timeout:i.timeout}:void 0,s=await ea.loadString(n,r),o=function(e,t,i){let n;n="plain"===i.type?function(e,t){const i=[],n=[];return Wi(t).forEach((function(e){""===e||i.push(e)})),i.forEach((function(t){var i,r,s,o,a=t.split("\t");a.length>=3&&(s=(r=a[1].split(":"))[1].split("-"),i=a[2].trim(),o={gene:a[0],chromosome:e.genome.getChromosomeName(r[0].trim()),start:parseInt(s[0].replace(/,/g,"")),end:parseInt(s[1].replace(/,/g,"")),type:"gtex"===i?"snp":"gene"},n.push(o))})),n}(e,t):JSON.parse(t);i.resultsField&&(n=n[i.resultsField]);if(n&&0!==n.length){const t=i.chromosomeField||"chromosome",r=i.startField||"start",s=i.endField||"end",o=i.coords||1;let a;a=Array.isArray(n)?n[0]:n,a.hasOwnProperty(t)&&a.hasOwnProperty(r)||console.error("Search service results must include chromosome and start fields: "+a);const l=a[t],h=e.genome.getChromosome(l);if(!h)return;const c=h.name;let d=a[r]-o,u=a[s];void 0===u&&(u=d+1);const f={chr:c,start:d,end:u},p=a.type?a.type:"gene";return i.geneField&&"gene"===p&&(f.gene=a[i.geneField]),i.snpField&&"snp"===p&&(f.snp=a[i.snpField]),f}return}(e,s,i);o&&(o.locusSearchString=t);return o}(e,i,n)}catch(e){throw console.error(e),Error("Search service currently unavailable.")}return r};for(let e of i){const t=await s(e);t&&(t.locusSearchString=e,r.push(t))}if(0===r.length){const e=await s(t);e&&(e.locusSearchString=t,r.push(e))}return 0===r.length?void 0:r}class ew{constructor(e){this.browser=e}navbarDidResize(e){this.updateNavbar(this.createResponsiveClassSchedule(e))}updateNavbar(e){this.browser.$toggle_button_container.removeClass(),this.browser.$toggle_button_container.addClass(e.$toggle_button_container),ft(this.browser.zoomWidget.zoomContainer).removeClass(),ft(this.browser.zoomWidget.zoomContainer).addClass(e.zoomContainer)}createResponsiveClassSchedule(e){let t={};const i=this.browser.isMultiLocusWholeGenomeView()||this.browser.referenceFrameList&&Tl.isWholeGenomeView(this.browser.referenceFrameList[0].chr);return i?this.browser.windowSizePanel.hide():this.browser.windowSizePanel.show(),e>990?(t.$toggle_button_container="igv-navbar-toggle-button-container",t.zoomContainer="igv-zoom-widget"):e>860?(t.$toggle_button_container="igv-navbar-toggle-button-container",t.zoomContainer="igv-zoom-widget-900"):e>540?(t.$toggle_button_container="igv-navbar-toggle-button-container-750",t.zoomContainer="igv-zoom-widget-900"):(t.$toggle_button_container="igv-navbar-toggle-button-container-750",t.zoomContainer="igv-zoom-widget-900",this.browser.windowSizePanel.hide()),i&&(t.zoomContainer="igv-zoom-widget-hidden"),t}}const tw=function(e,t){this.container=_t.div({class:"igv-chromosome-select-widget-container"}),t.appendChild(this.container),this.select=document.createElement("select"),this.select.setAttribute("name","chromosome-select-widget"),this.container.appendChild(this.select),this.select.addEventListener("change",(()=>{this.select.blur(),""!==this.select.value&&e.search(this.select.value)})),this.showAllChromosomes=!1!==e.config.showAllChromosomes};tw.prototype.show=function(){this.container.style.display="flex"},tw.prototype.hide=function(){this.container.style.display="none"},tw.prototype.update=function(e){const t=this.showAllChromosomes?e.chromosomeNames.slice():e.wgChromosomeNames.slice();e.showWholeGenomeView()&&(t.unshift("all"),t.unshift("")),this.select.innerHTML="";for(let e of t){const t=document.createElement("option");t.setAttribute("value",e),t.innerText=e,this.select.appendChild(t)}};class iw{constructor(e,t){this.container=_t.div({class:"igv-windowsize-panel-container"}),e.appendChild(this.container),t.on("locuschange",(e=>{this.updatePanel(e)})),this.browser=t}show(){this.container.style.display="block"}hide(){this.container.style.display="none"}updatePanel(e){const t=this.browser.calculateViewportWidth(this.browser.referenceFrameList.length);this.container.innerText=1===e.length?Ta(Math.round(t*e[0].bpPerPixel)):""}}class nw{constructor(e,t){this.browser=t,this.columnContainer=e,this.horizontalGuide=_t.div({class:"igv-cursor-guide-horizontal"}),e.appendChild(this.horizontalGuide),this.verticalGuide=_t.div({class:"igv-cursor-guide-vertical"}),e.appendChild(this.verticalGuide),this.addMouseHandler(t),this.setVisibility(t.config.showCursorGuide)}addMouseHandler(e){this.boundMouseMoveHandler=function(t){const{x:i,y:n}=_t.translateMouseCoordinates(t,this.columnContainer);this.horizontalGuide.style.top=`${n}px`;const r=function(e,t){for(;e.parentElement;){if(e.parentElement.classList.contains(t))return e.parentElement;e=e.parentElement}return}(document.elementFromPoint(t.clientX,t.clientY),"igv-viewport");if(r&&e.getRulerTrackView()){this.verticalGuide.style.left=`${i}px`;const n=e.root.querySelectorAll(".igv-column");let s;const o=r.parentElement;for(let e=0;e<n.length;e++)void 0===s&&o===n[e]&&(s=e);const a=e.getRulerTrackView().viewports[s].mouseMove(t);if(a){const{start:e,bp:t,end:i}=a,n=(t-e)/(i-e);this.customMouseHandler&&this.customMouseHandler({start:e,bp:t,end:i,interpolant:n})}}}.bind(this),this.columnContainer.addEventListener("mousemove",this.boundMouseMoveHandler)}removeMouseHandler(){this.columnContainer.removeEventListener("mousemove",this.boundMouseMoveHandler)}setVisibility(e){!0===e?this.show():this.hide()}show(){this.verticalGuide.style.display="block",this.horizontalGuide.style.display="block"}hide(){if(this.verticalGuide.style.display="none",this.horizontalGuide.style.display="none",this.browser.getRulerTrackView())for(let e of this.browser.getRulerTrackView().viewports)e.$tooltip.hide()}}class rw{constructor(e,t){this.browser=e,this.button=_t.div({class:"igv-navbar-button"}),t.appendChild(this.button),this.button.textContent="cursor guide",this.button.addEventListener("click",(()=>{e.cursorGuideVisible=!e.cursorGuideVisible,e.setCursorGuideVisibility(e.cursorGuideVisible),this.setButtonState(e.cursorGuideVisible)})),this.setButtonState(e.cursorGuideVisible),e.config.showCursorTrackingGuideButton?this.show():this.hide()}setButtonState(e){!0===e?this.button.classList.add("igv-navbar-button-clicked"):this.button.classList.remove("igv-navbar-button-clicked")}show(){this.button.style.display="block",this.setButtonState(this.browser.cursorGuideVisible)}hide(){this.button.style.display="none"}}class sw{constructor(e,t){this.browser=e,this.button=_t.div({class:"igv-navbar-button"}),t.appendChild(this.button),this.button.textContent="center line",this.button.addEventListener("click",(()=>{e.isCenterLineVisible=!e.isCenterLineVisible,e.setCenterLineVisibility(e.isCenterLineVisible),this.setButtonState(e.isCenterLineVisible)})),this.setButtonState(e.isCenterLineVisible),e.config.showCenterGuideButton?this.show():this.hide()}setButtonState(e){!0===e?this.button.classList.add("igv-navbar-button-clicked"):this.button.classList.remove("igv-navbar-button-clicked")}show(){this.isVisible=!0,this.button.style.display="block",this.setButtonState(this.browser.isCenterLineVisible)}hide(){this.isVisible=!1,this.button.style.display="none"}}class ow{constructor(e,t){this.button=_t.div({class:"igv-navbar-button"}),e.appendChild(this.button),this.button.textContent="track labels",this.button.addEventListener("click",(()=>{t.trackLabelsVisible=!t.trackLabelsVisible,this.setState(t.trackLabelsVisible),t.setTrackLabelVisibility(t.trackLabelsVisible)})),this.browser=t,this.setVisibility(t.config.showTrackLabelButton),this.setState(t.trackLabelsVisible)}setVisibility(e){!0===e?this.show():this.hide()}setState(e){!0===e?this.button.classList.add("igv-navbar-button-clicked"):this.button.classList.remove("igv-navbar-button-clicked")}show(){this.button.style.display="block",this.setState(this.browser.trackLabelsVisible)}hide(){this.button.style.display="none"}}class aw{constructor(e,t){this.button=_t.div({class:"igv-navbar-button"}),e.appendChild(this.button),this.button.innerText="Sample Names",this.setState(t.showSampleNames),this.setVisibility(t.showSampleNameButton),this.button.addEventListener("click",(()=>{t.showSampleNames=!t.showSampleNames,this.setState(t.showSampleNames);for(let{sampleNameViewport:e}of t.trackViews)!1===t.showSampleNames?e.hide():e.show();t.layoutChange()}))}setVisibility(e){!0===e?this.show():this.hide()}setState(e){!0===e?this.button.classList.add("igv-navbar-button-clicked"):this.button.classList.remove("igv-navbar-button-clicked")}hide(){this.button.style.display="none"}show(){this.button.style.display="block"}}let lw=23,hw=0;const cw=function(e,t){this.browser=e,this.zoomContainer=_t.div({class:"igv-zoom-widget"}),t.appendChild(this.zoomContainer),this.zoomOutButton=_t.div(),this.zoomContainer.appendChild(this.zoomOutButton),this.zoomOutButton.appendChild(_i.createIcon("minus-circle")),this.zoomOutButton.addEventListener("click",(()=>{e.zoomOut()}));const i=_t.div();this.zoomContainer.appendChild(i),this.slider=document.createElement("input"),this.slider.type="range",this.slider.min="0",this.slider.max=`${lw}`,i.appendChild(this.slider),this.slider.addEventListener("change",(t=>{t.preventDefault(),t.stopPropagation();const i=e.referenceFrameList[0],{bpLength:n}=i.genome.getChromosome(i.chr),{end:r,start:s}=i,o=r-s,a=n/Math.pow(2,t.target.valueAsNumber);e.zoomWithScaleFactor(a/o)})),this.zoomInButton=_t.div(),this.zoomContainer.appendChild(this.zoomInButton),this.zoomInButton.appendChild(_i.createIcon("plus-circle")),this.zoomInButton.addEventListener("click",(()=>{e.zoomIn()})),e.on("locuschange",(e=>{this.browser.isMultiLocusMode()?this.disable():(this.enable(),this.update(e))}))};cw.prototype.update=function(e){const t=e[0],{bpLength:i}=t.genome.getChromosome(t.chr),{start:n,end:r}=t;lw=Math.ceil(Math.log2(i/this.browser.minimumBases())),this.slider.max=`${lw}`;const s=i/(r-n);hw=Math.log2(s),this.slider.value=`${Math.round(hw)}`},cw.prototype.enable=function(){this.slider.disabled=!1},cw.prototype.disable=function(){this.slider.disabled=!0},cw.prototype.hide=function(){this.zoomContainer.style.display="none"},cw.prototype.show=function(){this.zoomContainer.style.display="block"},cw.prototype.hideSlider=function(){this.slider.style.display="none"},cw.prototype.showSlider=function(){this.slider.style.display="block"};const dw=function(e,t){const i=_t.div({class:"igv-navbar-button"});e.append(i),i.textContent="Save SVG",i.addEventListener("click",(()=>t.saveSVGtoFile({})))},uw=(e,t)=>{const i=0===e?t.nextElementSibling:t.previousElementSibling;t.remove(),i.remove()},fw=e=>{const t=_t.div({class:"igv-column-shim"});Ia(t,e);const i=_t.div({class:"igv-column"});return Ia(i,t),i},pw=(e,t)=>{for(let i=0;i<t;i++){const n=_t.div({class:"igv-column"});if(La(n,e),t>1&&i>0){La(_t.div({class:"igv-column-shim"}),n)}}};class gw{constructor(e,t,i){this.browser=e,this.referenceFrame=t,this.column=i,this.container=_t.div({class:"igv-center-line"}),i.appendChild(this.container),e.isCenterLineVisible?this.show():this.hide()}repaint(){if(this.referenceFrame){if(1/this.referenceFrame.bpPerPixel>1){const e=Math.floor(this.referenceFrame.toPixels(1));this.container.style.width=`${e}px`,this.container.classList.remove("igv-center-line-thin"),this.container.classList.add("igv-center-line-wide")}else this.container.style.width="1px",this.container.classList.remove("igv-center-line-wide"),this.container.classList.add("igv-center-line-thin")}}show(){this.isVisible=!0,this.container.style.display="block",this.repaint()}hide(){this.isVisible=!1,this.container.style.display="none"}resize(){this.repaint()}}const mw=$i;class bw{constructor(e){this.browser=e,this.height=40,this.name="",this.id="ruler",this.disableButtons=!0,this.ignoreTrackMenu=!0,this.order=.01*Number.MIN_SAFE_INTEGER,this.removable=!1,this.type="ruler"}async getFeatures(e,t,i){return[]}computePixelHeight(e){return this.height}draw({context:e,referenceFrame:t,pixelWidth:i,pixelHeight:n,bpPerPixel:r,bpStart:s}){Tl.isWholeGenomeView(t.chr)?this.drawWholeGenome({context:e,pixelWidth:i,pixelHeight:n,bpPerPixel:r}):this.doDraw({context:e,referenceFrame:t,pixelWidth:i,pixelHeight:n,bpStart:s})}drawWholeGenome({context:e,pixelWidth:t,pixelHeight:i,bpPerPixel:n}){e.save(),va.fillRect(e,0,0,t,i,{fillStyle:"white"});for(let t of this.browser.genome.wgChromosomeNames){let r=this.browser.genome.getCumulativeOffset(t),s=this.browser.genome.getChromosome(t).bpLength,o=Math.round(r/n),a=Math.round(s/n);this.renderChromosomeRect(e,o,0,a,i,t)}e.restore()}doDraw({context:e,referenceFrame:t,pixelWidth:i,pixelHeight:n,bpStart:r}){e.clearRect(0,0,i,n);const s=function(e,t){if(e<10)return new ww(1,"bp",1);const i=Math.floor(Math.log10(e));let n="bp",r=1;i>9?(n="gb",r=1e9):i>6?(n="mb",r=1e6):i>3&&(n="kb",r=1e3);const s=Math.pow(10,i-1),o=e/s,a=75,l=Math.pow(10,i-1),h=Math.pow(10,i)/2;return new ww(o<a&&!0!==t?l:h,n,r)}(Math.floor(t.toBP(i)),e.isSVG);let o=Math.floor(r/s.majorTick)-1;const{tickDelta:a,labelLength:l}=function(e,t,i,n,r){const s=h(t,l(1+n,r),i)-h(t,l(n,r),i),o=`${$i(Math.floor(l(n,r)/r.unitMultiplier))} ${r.majorUnit}`,a=Math.floor(e.measureText(o).width);return{tickDelta:s,labelLength:a};function l(e,t){return Math.floor(e*t.majorTick)}function h(e,t,i){return Math.round(e.toPixels(t-1-i+.5))}}(e,t,r,o,s);let h,c;this.browser.referenceFrameList.indexOf(t);let d=a;const u=.25*l;do{c=Math.floor(o*s.majorTick);const i=`${$i(Math.floor(c/s.unitMultiplier))} ${s.majorUnit}`;h=Math.round(t.toPixels(c-1-r+.5));const n=Math.round(h-e.measureText(i).width/2);n>0&&u+l<=d&&(va.fillText(e,i,n,this.height-8),d=0),h>0&&va.strokeLine(e,h,this.height-6,h,this.height-2),c=Math.floor((1+o)*s.majorTick);let f=h+(Math.round(t.toPixels(c-1-r+.5))-h)/2;f>0&&va.strokeLine(e,f,this.height-6,f,this.height-2),++o,d+=a}while(h<i);va.strokeLine(e,0,this.height-2,i,this.height-2)}renderChromosomeRect(e,t,i,n,r,s){e.textAlign="center",e.textBaseline="middle",e.font="12px sans-serif",va.strokeLine(e,t+n,i,t+n,i+r,{strokeStyle:Oo.greyScale(191)});const o=s.startsWith("chr")?s.substring(3):s;n>e.measureText(o).width&&va.fillText(e,o,t+n/2,i+r/2,{fillStyle:Oo.greyScale(68)})}get supportsWholeGenome(){return!0}dispose(){}}class ww{constructor(e,t,i){this.majorTick=e,this.minorTick=e/10,this.majorUnit=t,this.unitMultiplier=i}description(e){console.log((e||"")+" tick "+mw(this.majorTick)+" label width "+mw(this.labelWidthBP)+" multiplier "+this.unitMultiplier)}}const vw=function(e,t){this.button=_t.div({class:"igv-navbar-button"}),e.appendChild(this.button),this.button.textContent="circular view",this.button.addEventListener("click",(()=>{t.circularViewVisible=!t.circularViewVisible})),this.browser=t,this.setVisibility(t.config.showCircularViewButton),this.setState(t.circularViewVisible)};vw.prototype.setVisibility=function(e){!0===e?this.show():this.hide()},vw.prototype.setState=function(e){!0===e?this.button.classList.add("igv-navbar-button-clicked"):this.button.classList.remove("igv-navbar-button-clicked")},vw.prototype.show=function(){this.button.style.display="block",this.setState(this.browser.circularViewVisible)},vw.prototype.hide=function(){this.button.style.display="none"};const yw=function(e,t,i){const n=_t.div({class:"igv-navbar-button"});e.append(n),n.textContent=i.label,n.addEventListener("click",(()=>i.callback(t)))};class _w{constructor(e,t,i,n,r){this.browser=e,this.roiMenu=t,this.roiTable=i,this.top=n,this.roiSets=r||[],this.boundLocusChangeHandler=xw.bind(this),e.on("locuschange",this.boundLocusChangeHandler)}async initialize(){this.roiSets.length>0&&(this.browser.showROITableButton=!0,this.browser.roiTableControl.setVisibility(this.browser.showROITableButton));const e=this.roiSets.map((e=>this.renderROISet({browser:this.browser,pixelTop:this.top,roiSet:e})));e.length>0&&await Promise.all(e);const t=await this.getTableRecords();this.roiTable.renderTable(t)}async loadROI(e,t){const i=Array.isArray(e)?e:[e];for(let e of i)this.roiSets.push(new cd(e,t));await this.initialize()}clearROIs(){this.roiTable.clearTable();const e=this.browser.columnContainer.querySelectorAll(".igv-roi-region");for(let t of e)t.remove();for(let e of this.roiSets)e.dispose();this.roiSets=[]}async getTableRecords(){const e=[];for(let t of this.roiSets){const i=t.isUserDefined?"":t.name||"",n=await t.getAllFeatures();for(let t of Object.keys(n))for(let r of n[t])e.push({setName:i,feature:r})}return e}presentTable(){this.roiTable.present()}async repaintTable(){const e=await this.getTableRecords();this.roiTable.renderTable(e)}dismissTable(){this.roiTable.dismiss()}async updateUserDefinedROISet(e){let t=await this.getUserDefinedROISet();void 0===t&&(t=this.initializeUserDefinedROISet()),t.addFeature(e),!1===this.browser.showROITableButton&&this.setROITableButtonVisibility(!0),await this.renderROISet({browser:this.browser,pixelTop:this.top,roiSet:t});const i=await this.getTableRecords();this.roiTable.renderTable(i)}setROITableButtonVisibility(e){this.browser.showROITableButton=e,this.browser.roiTableControl.setVisibility(this.browser.showROITableButton)}async renderAllROISets(){for(let e of this.roiSets)await this.renderROISet({browser:this.browser,pixelTop:this.top,roiSet:e})}async renderROISet({browser:e,pixelTop:t,roiSet:i}){const n=e.columnContainer.querySelectorAll(".igv-column");for(let r=0;r<n.length;r++){let{chr:s,start:o,end:a,bpPerPixel:l}=e.referenceFrameList[r];const h=n[r].querySelectorAll(".igv-roi-region");for(let e of h){const t=e.dataset.region,{chr:i,start:n,end:r}=Sw(t);(i!==s||r<o||n>a)&&e.remove()}const c=await i.getFeatures(s,o,a);if(c)for(let h of c){const c=kw(s,h.start,h.end),{x:d,width:u}=dd(Math.max(o,h.start),Math.min(a,h.end),o,l),f=n[r].querySelector(Cw(c));if(f)f.style.left=`${d}px`,f.style.width=`${u}px`;else{const s=this.createRegionElement(e.columnContainer,t,d,u,i,c,h.name);n[r].appendChild(s)}}}}createRegionElement(e,t,i,n,r,s,o){const a=_t.div({class:"igv-roi-region"});a.style.top=`${t}px`,a.style.left=`${i}px`,a.style.width=`${n}px`,a.style.backgroundColor=r.color,a.dataset.region=s;const l=_t.div();return a.appendChild(l),l.style.backgroundColor=r.headerColor,!0===r.isUserDefined?l.addEventListener("click",(t=>{t.preventDefault(),t.stopPropagation();const{x:i,y:n}=_t.translateMouseCoordinates(t,e);this.roiMenu.present(i,n,this,e,a)})):o?l.addEventListener("click",(t=>{t.preventDefault(),t.stopPropagation(),this.popover&&this.popover.dispose(),this.popover=new Oi(e,r.name),this.popover.presentContentWithEvent(t,o)})):l.style.pointerEvents="none",a}renderSVGContext(e,{deltaX:t,deltaY:i}){for(const n of document.querySelectorAll(".igv-roi-region")){const{x:r,y:s,width:o,height:a}=n.getBoundingClientRect();e.fillStyle=n.style.backgroundColor,e.fillRect(r+t,s+i,o,a);const l=n.querySelector("div"),{x:h,y:c,width:d,height:u}=l.getBoundingClientRect();e.fillStyle=l.style.backgroundColor,e.fillRect(h+t,c+i,d,u)}}async getUserDefinedROISet(){return this.roiSets.find((e=>!0===e.isUserDefined))}initializeUserDefinedROISet(){const e=new cd({isUserDefined:!0,features:[]},this.browser.genome);return this.roiSets.push(e),e}async deleteUserDefinedRegionWithKey(e,t){t.querySelectorAll(Cw(e)).forEach((e=>e.remove()));const i=await this.findUserDefinedRegionWithKey(e),n=await this.getUserDefinedROISet();n&&n.removeFeature(i);0===(await this.getTableRecords()).length&&(this.browser.roiTableControl.buttonHandler(!1),this.setROITableButtonVisibility(!1))}async findUserDefinedRegionWithKey(e){const{chr:t,start:i,end:n}=Sw(e),r=await this.getUserDefinedROISet();if(r){const e=await r.getFeatures(t,i,n);for(let r of e)if(r.chr===t&&r.start>=i&&r.end<=n)return r}}toJSON(){return this.roiSets.map((e=>e.toJSON()))}dispose(){this.browser.off("locuschange",this.boundLocusChangeHandler);const e=this.browser.columnContainer.querySelectorAll(".igv-roi-region");for(let t of e)t.remove();this.roiMenu&&this.roiMenu.dispose(),this.roiTable&&this.roiTable.dispose();for(let e of this.roiSets)e.dispose();for(let e of Object.keys(this))this[e]=void 0}}function xw(){this.renderAllROISets()}function kw(e,t,i){return`${e}-${t}-${i}`}function Cw(e){return`[data-region="${e}"]`}function Sw(e){let[t,i,n]=e.split("-");return i=parseInt(i),n=parseInt(n),{chr:t,start:i,end:n,locus:`${t}:${i}-${n}`,bedRecord:`${t}\t${i}\t${n}`}}class Aw extends Ku{constructor(e){super(Object.assign({width:"512px"},e))}tableRowDOM(e){const t=_t.div({class:"igv-roi-table-row"}),{setName:i,feature:n}=e;t.dataset.region=kw(n.chr,n.start,n.end);let r=[n.chr,$i(n.start),$i(n.end),n.name||"",i];4===this.columnFormat.length&&(r=r.slice(0,4));for(let e=0;e<r.length;e++){const i=_t.div();t.appendChild(i),i.style.width=this.columnFormat[e].width,i.innerText=r[e]}return this.tableRowDOMHelper(t),t}renderTable(e){if(Array.from(this.tableRowContainer.querySelectorAll(".igv-roi-table-row")).forEach((e=>e.remove())),e.length>0){const t=e.sort(((e,t)=>e.feature.chr.localeCompare(t.feature.chr)||e.feature.start-t.feature.start||e.feature.end-t.feature.end));for(let e of t){const t=this.tableRowDOM(e);this.tableRowContainer.appendChild(t)}}}dispose(){document.removeEventListener("click",this.boundGotoButtonHandler),this.browser.roiTableControl.buttonHandler(!1),super.dispose()}static getColumnFormatConfiguration(e){return!0===e?[{label:"Chr",width:"20%"},{label:"Start",width:"15%"},{label:"End",width:"15%"},{label:"Description",width:"30%"},{label:"ROI Set",width:"20%"}]:[{label:"Chr",width:"25%"},{label:"Start",width:"20%"},{label:"End",width:"20%"},{label:"Description",width:"35%"}]}static gotoButtonHandler(e){e.stopPropagation();const t=this.tableDOM.querySelectorAll(".igv-roi-table-row-selected"),i=[];for(let e of t){const{locus:t}=Sw(e.dataset.region);i.push(t)}for(let e of this.tableDOM.querySelectorAll(".igv-roi-table-row"))e.classList.remove("igv-roi-table-row-selected");this.setTableRowSelectionState(!1),i.length>0&&this.browser.search(i.join(" "))}}class Ew{constructor(e,t){this.browser=e,this.container=_t.div({class:"igv-roi-menu-next-gen"}),t.appendChild(this.container);const i=_t.div();this.container.appendChild(i),ki.attachDialogCloseHandlerWithParent(i,(()=>this.container.style.display="none")),this.body=_t.div(),this.container.appendChild(this.body),this.container.style.display="none"}async present(e,t,i,n,r){Tw(this.body);const s=await this.browser.roiManager.findUserDefinedRegionWithKey(r.dataset.region),o=_t.div();this.body.appendChild(o);const a="Description",l=s.name||a;o.innerText=l,o.setAttribute("title",l),a===l?o.classList.add("igv-roi-placeholder"):o.classList.remove("igv-roi-placeholder");const h=_t.div();this.body.appendChild(h),h.innerText="Set Description",h.addEventListener("click",(e=>{e.stopPropagation(),this.container.style.display="none";const t={label:"Description",value:s.name||"",callback:()=>{const e=this.browser.inputDialog.value||"";s.name=e.trim(),this.container.style.display="none",this.browser.roiManager.repaintTable()}};this.browser.inputDialog.present(t,e)}));const c=_t.div();this.body.appendChild(c),c.innerText="Delete Region",c.addEventListener("click",(e=>{e.stopPropagation(),this.container.style.display="none",this.browser.roiManager.deleteUserDefinedRegionWithKey(r.dataset.region,this.browser.columnContainer)})),this.container.style.left=`${e}px`,this.container.style.top=`${t}px`,this.container.style.display="flex"}async __present(e,t,i,n,r){Tw(this.container);const s=await this.browser.roiManager.findUserDefinedRegionWithKey(r.dataset.region);let o;o=_t.div({class:"igv-roi-menu-row-edit-description"}),this.container.appendChild(o),o.addEventListener("click",(e=>{e.stopPropagation()}));const a="description-input",l=document.createElement("label");o.appendChild(l),l.setAttribute("for",a),l.innerText="Description:";const h=document.createElement("input");o.appendChild(h),h.setAttribute("type","text"),h.setAttribute("name",a),h.setAttribute("placeholder",""),h.value=s.name||"",h.addEventListener("change",(async e=>{e.stopPropagation();(await this.browser.roiManager.findUserDefinedRegionWithKey(r.dataset.region)).name=h.value,h.blur(),this.container.style.display="none",await this.browser.roiManager.repaintTable()})),o=_t.div({class:"igv-roi-menu-row"}),o.innerText="Delete region",this.container.appendChild(o),o.addEventListener("click",(e=>{e.stopPropagation(),this.container.style.display="none",this.browser.roiManager.deleteUserDefinedRegionWithKey(r.dataset.region,this.browser.columnContainer)})),this.container.style.left=`${e}px`,this.container.style.top=`${t}px`,this.container.style.display="flex",n.addEventListener("click",(e=>{e.stopPropagation(),this.container.style.display="none"}))}dispose(){this.container.innerHTML=""}}function Tw(e){for(;e.firstChild;)e.removeChild(e.firstChild)}class Mw{constructor(e,t){this.name=e.name,this.featureSource=e.featureSource||ad(e,t),this.color=e.color||ld}async getFeatures(e,t,i){return this.featureSource.getFeatures({chr:e,start:t,end:i})}draw(e){const{context:t,bpPerPixel:i,bpStart:n,pixelTop:r,pixelHeight:s,pixelWidth:o,features:a}=e;if(!a)return;const l=n+o*i+1;for(let{start:e,end:o}of a){if(o<n)continue;if(e>l)break;const{x:a,width:h}=dd(e,o,n,i);va.fillRect(t,a,r,h,s,{fillStyle:this.color})}}}class Rw{constructor(e,t){this.browser=t,this.button=_t.div({class:"igv-navbar-button"}),e.appendChild(this.button),this.button.textContent="ROI Table",this.button.addEventListener("click",(()=>{this.buttonHandler(!t.roiTableVisible)})),this.browser=t,this.setVisibility(t.showROITableButton),this.setState(t.roiTableVisible)}buttonHandler(e){this.browser.roiTableVisible=e,this.setState(this.browser.roiTableVisible),this.browser.setROITableVisibility(this.browser.roiTableVisible)}setVisibility(e){!0===e?this.show():this.hide()}setState(e){!0===e?this.button.classList.add("igv-navbar-button-clicked"):this.button.classList.remove("igv-navbar-button-clicked")}show(){this.button.style.display="block",this.setState(this.browser.roiTableVisible)}hide(){this.button.style.display="none"}}class Lw{constructor(e,t){this.config=e,this.guid=_t.guid(),this.namespace=".browser_"+this.guid,this.parent=t,this.root=_t.div({class:"igv-container"}),t.appendChild(this.root),this.alert=new _a(this.root),this.columnContainer=_t.div({class:"igv-column-container"}),this.root.appendChild(this.columnContainer),this.menuPopup=new xf(this.columnContainer),this.initialize(e),this.trackViews=[],this.constants={dragThreshold:3,scrollThreshold:5,defaultColor:"rgb(0,0,150)",doubleClickDelay:e.doubleClickDelay||500},this.eventHandlers={},this.addMouseHandlers(),this.setControls(e)}initialize(e){e.gtex&&(Uu.gtexLoaded=!0),this.flanking=e.flanking,this.crossDomainProxy=e.crossDomainProxy,this.formats=e.formats,this.trackDefaults=e.trackDefaults,this.nucleotideColors=e.nucleotideColors||ol;for(let e of Object.keys(this.nucleotideColors))this.nucleotideColors[e.toLowerCase()]=this.nucleotideColors[e];this.trackLabelsVisible=e.showTrackLabels,this.roiTableVisible=e.showROITable,this.showROITableButton=e.showROITableButton,this.isCenterLineVisible=e.showCenterGuide,this.cursorGuideVisible=e.showCursorGuide,this.showSampleNames=e.showSampleNames,this.showSampleNameButton=e.showSampleNameButton,this.sampleNameViewportWidth=e.sampleNameViewportWidth||200,e.search&&(this.searchConfig={type:"json",url:e.search.url,coords:void 0===e.search.coords?1:e.search.coords,chromosomeField:e.search.chromosomeField||"chromosome",startField:e.search.startField||"start",endField:e.search.endField||"end",geneField:e.search.geneField||"gene",snpField:e.search.snpField||"snp",resultsField:e.search.resultsField})}setControls(e){const t=this.createStandardControls(e);t.insertBefore(ft(this.columnContainer)),this.$navigation=t,!1===e.showControls&&t.hide()}createStandardControls(e){this.navbarManager=new ew(this);const t=ft("<div>",{class:"igv-navbar"});this.$navigation=t;const i=ft("<div>",{class:"igv-navbar-left-container"});t.append(i);const n=ft("<div>",{class:"igv-logo"});i.append(n);const r=ft('<svg width="690px" height="324px" viewBox="0 0 690 324" version="1.1" xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink"><title>IGV</title><g id="Page-1" stroke="none" stroke-width="1" fill="none" fill-rule="evenodd"><g id="IGV" fill="#666666"><polygon id="Path" points="379.54574 8.00169252 455.581247 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</svg>');r.css("width","34px"),r.css("height","32px"),n.append(r),this.$current_genome=ft("<div>",{class:"igv-current-genome"}),i.append(this.$current_genome),this.$current_genome.text("");const s=ft("<div>",{class:"igv-navbar-genomic-location"});i.append(s),this.chromosomeSelectWidget=new tw(this,s.get(0)),void 0===e.showChromosomeWidget&&(e.showChromosomeWidget=!0),!0===e.showChromosomeWidget?this.chromosomeSelectWidget.show():this.chromosomeSelectWidget.hide();const o=ft("<div>",{class:"igv-locus-size-group"});s.append(o);const a=ft("<div>",{class:"igv-search-container"});o.append(a),this.$searchInput=ft("<input>",{class:"igv-search-input",type:"text",placeholder:"Locus Search"}),a.append(this.$searchInput),this.$searchInput.change((()=>this.doSearch(this.$searchInput.val())));const l=_t.div({class:"igv-search-icon-container"});a.append(ft(l)),l.appendChild(_i.createIcon("search")),l.addEventListener("click",(()=>this.doSearch(this.$searchInput.val()))),this.windowSizePanel=new iw(o.get(0),this);const h=ft("<div>",{class:"igv-navbar-right-container"});t.append(h);const c=ft('<div class="igv-navbar-toggle-button-container">');if(h.append(c),this.$toggle_button_container=c,this.cursorGuide=new nw(this.columnContainer,this),this.cursorGuideButton=new rw(this,c.get(0)),this.centerLineButton=new sw(this,c.get(0)),this.setTrackLabelVisibility(e.showTrackLabels),this.trackLabelControl=new ow(c.get(0),this),this.roiTableControl=new Rw(c.get(0),this),this.sampleNameControl=new aw(c.get(0),this),!0===e.showSVGButton&&(this.svgSaveControl=new dw(c.get(0),this)),e.customButtons)for(let t of e.customButtons)new yw(c.get(0),this,t);return this.zoomWidget=new cw(this,h.get(0)),!1===e.showNavigation&&this.$navigation.hide(),this.inputDialog=new Ri(this.root),this.inputDialog.container.id=`igv-input-dialog-${_t.guid()}`,this.dataRangeDialog=new qi(this,ft(this.root)),this.dataRangeDialog.$container.get(0).id=`igv-data-range-dialog-${_t.guid()}`,this.genericColorPicker=new Pi({parent:this.columnContainer,width:432}),this.genericColorPicker.container.id=`igv-track-color-picker-${_t.guid()}`,t}getSampleNameViewportWidth(){return!1===this.showSampleNames?0:this.sampleNameViewportWidth}isMultiLocusMode(){return this.referenceFrameList&&this.referenceFrameList.length>1}addTrackToFactory(e,t){qb(e,t)}isMultiLocusWholeGenomeView(){if(void 0===this.referenceFrameList||1===this.referenceFrameList.length)return!1;for(let e of this.referenceFrameList)if("all"===e.chr.toLowerCase())return!0;return!1}currentLoci(){const e=e=>`${e.chr}:${e.start+1}-${e.end}`;return void 0===this.referenceFrameList||0===this.referenceFrameList.length?"":1===this.referenceFrameList.length?e(this.referenceFrameList[0]):this.referenceFrameList.map((t=>e(t)))}toSVG(){const{y:e,width:t,height:i}=this.columnContainer.getBoundingClientRect(),n=new Cl({width:t,height:8e3,backdropColor:"white",multiLocusGap:0,viewbox:{x:0,y:0,width:t,height:8e3}}),r={deltaX:0,deltaY:-e};for(let e of this.trackViews)e.renderSVGContext(n,r);return this.roiManager.renderSVGContext(n,r),n.setHeight(i),n.getSerializedSvg(!0)}renderSVG(e){const t=this.toSVG();return e.empty(),e.append(t),t}saveSVGtoFile(e){let t=this.toSVG();e.$container&&(e.$container.empty(),e.$container.append(t));Yi(e.filename||"igvjs.svg",URL.createObjectURL(new Blob([t],{type:"application/octet-stream"})))}async loadSession(e){let t;return this.roiSets=[],t=e.url||e.file?await async function(e){const t=e.url||e.file;if(e.url&&(e.url.startsWith("blob:")||e.url.startsWith("data:"))){const t=Lw.uncompressSession(e.url);return JSON.parse(t)}{let i=e.filename;if(i||(i=e.url?await Ea(e.url):e.file.name),i.endsWith(".xml")){const e=Tl.KNOWN_GENOMES,i=await ea.loadString(t);return new $b(i,e)}return i.endsWith(".json")?ea.loadJson(t):void 0}}(e):e,this.loadSessionObject(t)}async loadSessionObject(e){this.cleanHouseForSession(),this.showSampleNames=e.showSampleNames||!1,this.sampleNameControl.setState(!0===this.showSampleNames),e.sampleNameViewportWidth&&(this.sampleNameViewportWidth=e.sampleNameViewportWidth),Ra(this.columnContainer,"igv-axis-column"),Ra(this.columnContainer,"igv-sample-name-column"),Ra(this.columnContainer,"igv-scrollbar-column"),Ra(this.columnContainer,"igv-track-drag-column"),Ra(this.columnContainer,"igv-gear-menu-column");const t=e.reference||e.genome;if(!t)return void console.warn("No genome or reference object specified");const i=await Tl.expandReference(this.alert,t);await this.loadReference(i,e.locus),this.centerLineList=this.createCenterLineList(this.columnContainer);let n=0;if(!1!==e.showIdeogram){const e=new ip(this);e.id="ideogram";const t=new Af(this,this.columnContainer,e),{$viewport:i}=t.viewports[0];n=function(e){e="string"==typeof e?document.querySelector(e):e;const t=window.getComputedStyle(e),i=parseFloat(t.marginTop)+parseFloat(t.marginBottom),n=e.offsetHeight;return Math.ceil(i+n)}(i.get(0)),this.trackViews.push(t)}if(!1!==e.showRuler&&this.trackViews.push(new Af(this,this.columnContainer,new bw(this))),e.gtexSelections)for(let t of this.referenceFrameList)for(let i of Object.keys(e.gtexSelections)){const n=e.gtexSelections[i].gene,r=e.gtexSelections[i].snp;t.selection=new Qb(n,r)}this.roiManager&&this.roiManager.dispose();const r=new Ew(this,this.columnContainer),s={browser:this,parent:this.columnContainer,headerTitle:"Regions of Interest",dismissHandler:()=>this.roiTableControl.buttonHandler(!1),gotoButtonHandler:Aw.gotoButtonHandler};if(e.roi){const t=e.roi.map((e=>new cd(e,this.genome))),i=t.filter((({name:e})=>void 0!==e&&e.length>0));s.columnFormat=Aw.getColumnFormatConfiguration(i.length>0);const o=new Aw(s);this.roiManager=new _w(this,r,o,n,t)}else{s.columnFormat=Aw.getColumnFormatConfiguration(!1);const e=new Aw(s);this.roiManager=new _w(this,r,e,n,void 0)}await this.roiManager.initialize();const o=i.tracks||[],a=e.tracks?o.concat(e.tracks):o;0===a.filter((e=>"sequence"===e.type&&!e.url&&!e.fastaURL)).length&&a.push({type:"sequence",order:al});let l=1;for(let e of a)void 0===e.order&&(e.order=l++);await this.loadTrackList(a);for(let e of this.trackViews.filter((e=>"ruler"===e.track.type||"ideogram"===e.track.type)))e.updateViews();this.updateUIWithReferenceFrameList()}createCenterLineList(e){const t=e.querySelectorAll(".igv-center-line");for(let e=0;e<t.length;e++)t[e].remove();const i=[],n=e.querySelectorAll(".igv-column");for(let e=0;e<n.length;e++)i.push(new gw(this,this.referenceFrameList[e],n[e]));return i}async loadReference(e,t){const i=await Tl.loadGenome(e),n=void 0===this.genome||this.genome.id!==i.id;this.genome=i,this.updateNavbarDOMWithGenome(i),n&&this.removeAllTracks();let r=function(e,t){return e?Array.isArray(e)?e.join(" "):e:t.getHomeChromosomeName()}(t,i);if(!await this.search(r,!0)){console.log("Initial locus not found: "+r),r=i.getHomeChromosomeName();if(!await this.search(r,!0))throw new Error("Cannot set initial locus")}n&&this.circularView&&this.circularView.setAssembly({name:this.genome.id,id:this.genome.id,chromosomes:Du(this.genome)})}cleanHouseForSession(){for(let e of this.trackViews)e.removeDOMFromColumnContainer();this.columnContainer.querySelectorAll(".igv-axis-column, .igv-column-shim, .igv-column, .igv-sample-name-column, .igv-scrollbar-column, .igv-track-drag-column, .igv-gear-menu-column").forEach((e=>e.remove())),this.trackViews=[],this.circularView&&this.circularView.clearChords()}updateNavbarDOMWithGenome(e){let t=e.id&&e.id.length<10?e.id:"";this.$current_genome.text(t),this.$current_genome.attr("title",e.id||""),this.chromosomeSelectWidget.update(e)}async loadGenome(e){const t=await Tl.expandReference(this.alert,e);await this.loadReference(t,void 0);const i=t.tracks||[];return 0===i.filter((e=>"sequence"===e.type)).length&&i.push({type:"sequence",order:al}),await this.loadTrackList(i),await this.updateViews(),this.genome}updateUIWithReferenceFrameList(){const e=this.referenceFrameList;this.updateLocusSearchWidget();const t=this.isMultiLocusWholeGenomeView()||Tl.isWholeGenomeView(e[0].chr);this.navbarManager.navbarDidResize(this.$navigation.width(),t),Bw(this.trackViews,this.trackLabelsVisible),this.setCenterLineAndCenterLineButtonVisibility(!Tl.isWholeGenomeView(e[0].chr))}setTrackLabelVisibility(e){Bw(this.trackViews,e)}setROITableVisibility(e){!0===e?this.roiManager.presentTable():this.roiManager.dismissTable()}setCursorGuideVisibility(e){e?this.cursorGuide.show():this.cursorGuide.hide()}setCustomCursorGuideMouseHandler(e){this.cursorGuide.customMouseHandler=e}setCenterLineVisibility(e){for(let t of this.centerLineList)!0===e?(t.show(),t.repaint()):t.hide()}setCenterLineAndCenterLineButtonVisibility(e){for(let t of this.centerLineList){e&&t.isVisible?t.show():t.container.style.display="none"}e&&this.centerLineButton.isVisible?this.centerLineButton.show():this.centerLineButton.button.style.display="none"}async loadTrackList(e){const t=[];for(let i of e)t.push(this._loadTrack(i));const i=await Promise.all(t);return this.trackViews.filter((function(e){return e.track.autoscaleGroup})).length>0&&this.updateViews(),i}async loadTrack(e){const t=this._loadTrack(e);return e.autoscaleGroup&&(await t,this.updateViews()),t}async _loadTrack(e){ji(e)&&(e=JSON.parse(e));try{const t=await this.createTrack(e);if(void 0===t)return;void 0===t.order&&(t.order=this.trackViews.length);const i=new Af(this,this.columnContainer,t);if(this.trackViews.push(i),Bw(this.trackViews,this.trackLabelsVisible),this.reorderTracks(),this.fireEvent("trackorderchanged",[this.getTrackOrder()]),"function"==typeof t.postInit)try{i.startSpinner(),await t.postInit()}finally{i.stopSpinner()}return t.autoscaleGroup||(e.sync?await i.updateViews():i.updateViews()),"function"==typeof t.hasSamples&&t.hasSamples()&&!1!==this.config.showSampleNameButton&&this.sampleNameControl.show(),t}catch(t){const i={401:"Access unauthorized",403:"Access forbidden",404:"Not found"};console.error(t);let n=t.message||t.error||t.toString();i.hasOwnProperty(n)&&(n=i[n]),n+=": "+e.url,this.alert.present(new Error(n),void 0)}}async loadROI(e){await this.roiManager.loadROI(e,this.genome)}clearROIs(){this.roiManager.clearROIs()}async getUserDefinedROIs(){if(this.roiManager){const e=await this.roiManager.getUserDefinedROISet();if(void 0===e)return[];const t=await e.getAllFeatures(),i=[];for(let e of Object.values(t))i.push(...e);return i}return[]}getRulerTrackView(){const e=this.trackViews.filter((({track:e})=>"ruler"===e.id));return e.length>0?e[0]:void 0}async createTrack(e){let t=await async function(e){return"function"==typeof e?e():e}
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Could not determine track type for file: ${e.url||e}`),void 0)}reorderTracks(){this.trackViews.sort((function(e,t){const i=e=>"ideogram"===e.track.id?1:"ruler"===e.track.id?2:3,n=i(e),r=i(t);if(n===r){return(e.track.order||0)-(t.track.order||0)}return n-r}));for(let{axis:e,viewports:t,sampleNameViewport:i,outerScroll:n,dragHandle:r,gearContainer:s}of this.trackViews){e.remove();for(let{$viewport:e}of t)e.detach();i.viewport.remove(),n.remove(),r.remove(),s.remove()}const e=this.columnContainer.querySelectorAll(".igv-column");for(let{axis:t,viewports:i,sampleNameViewport:n,outerScroll:r,dragHandle:s,gearContainer:o}of this.trackViews){this.columnContainer.querySelector(".igv-axis-column").appendChild(t);for(let t=0;t<e.length;t++){const{$viewport:n}=i[t];e[t].appendChild(n.get(0))}this.columnContainer.querySelector(".igv-sample-name-column").appendChild(n.viewport),this.columnContainer.querySelector(".igv-scrollbar-column").appendChild(r),this.columnContainer.querySelector(".igv-track-drag-column").appendChild(s),this.columnContainer.querySelector(".igv-gear-menu-column").appendChild(o)}}getTrackOrder(){return this.trackViews.filter((e=>e.track&&e.track.name)).map((e=>e.track.name))}removeTrackByName(e){const t=this.trackViews.slice();for(let i of t)e===i.track.name&&this.removeTrack(i.track)}removeTrack(e){for(let t of this.trackViews)if(e===t.track){this._removeTrack(t.track);break}}_removeTrack(e){e.disposed||(this.trackViews.splice(this.trackViews.indexOf(e.trackView),1),this.fireEvent("trackremoved",[e]),this.fireEvent("trackorderchanged",[this.getTrackOrder()]),e.trackView&&e.trackView.dispose())}removeAllTracks(){const e=[];for(let t of this.trackViews)"ruler"!==t.track.id&&"ideogram"!==t.track.id?(this.fireEvent("trackremoved",[t.track]),t.dispose()):e.push(t);this.trackViews=e}findTracks(e,t){let i="function"==typeof e?t=>e(t.track):i=>t===i.track[e];return this.trackViews.filter(i).map((e=>e.track))}setTrackHeight(e){this.trackHeight=e,this.trackViews.forEach((function(t){t.setTrackHeight(e)}))}async visibilityChange(){this.layoutChange()}async layoutChange(){if(this.referenceFrameList.find((e=>e.bpPerPixel<0))){const e=this.calculateViewportWidth(this.referenceFrameList.length);for(let t of this.referenceFrameList)t.bpPerPixel=(t.end-t.start)/e}if(this.referenceFrameList){const e=this.isMultiLocusWholeGenomeView()||Tl.isWholeGenomeView(this.referenceFrameList[0].chr);this.navbarManager.navbarDidResize(this.$navigation.width(),e)}Iw.call(this),await this.updateViews()}async updateViews(){const e=this.trackViews;this.updateLocusSearchWidget();for(let e of this.centerLineList)e.repaint();if(this.dragObject)for(let t of e)await t.updateViews();else{const r={},s=[];for(let i of e){const e=i.track.autoscaleGroup;if(e){var t=r[e];t||(t=[],r[e]=t),t.push(i)}else s.push(i)}if(Object.entries(r).length>0){const e=Object.keys(r);for(let t of e){const e=r[t],s=[];for(let t of e)s.push(t.getInViewFeatures());const o=await Promise.all(s);var i,n=[];for(let e of o)n=n.concat(e);i=Sa(n);const a=[];for(let t of e)t.track.dataRange=i,t.track.autoscale=!1,a.push(t.updateViews());await Promise.all(a)}}await Promise.all(s.map((e=>e.updateViews())))}}repaintViews(){for(let e of this.trackViews)e.repaintViews()}updateLocusSearchWidget(){if(!this.referenceFrameList)return;const e=this.referenceFrameList,t=this.calculateViewportWidth(this.referenceFrameList.length);for(let i of e)i.end=i.start+i.bpPerPixel*t;this.chromosomeSelectWidget.select.value=1===e.length?this.referenceFrameList[0].chr:"";const i=this.referenceFrameList.map((e=>e.getLocusString())).join(" ");this.$searchInput.val(i),this.fireEvent("locuschange",[this.referenceFrameList])}calculateViewportWidth(e){let{width:t}=this.columnContainer.getBoundingClientRect();return t-=50+this.getSampleNameViewportWidth()+14+12+28,t-=5*(e-1),Math.floor(t/e)}getCenterLineXOffset(){let{width:e}=this.columnContainer.getBoundingClientRect();return e-=50+this.getSampleNameViewportWidth()+14+12+28,Math.floor(e/2+50)}minimumBases(){return this.config.minimumBases}zoomIn(){this.zoomWithScaleFactor(.5)}zoomOut(){this.zoomWithScaleFactor(2)}async zoomWithScaleFactor(e,t,i){if(!this.referenceFrameList)return;const n=this.calculateViewportWidth(this.referenceFrameList.length);let r=i?[i]:this.referenceFrameList;for(let i of r)i.zoomWithScaleFactor(this,e,n,t)}async addMultiLocusPanel(e,t,i,n){if(!this.referenceFrameList)return;const r=this.calculateViewportWidth(1+this.referenceFrameList.length),s=this.calculateViewportWidth(this.referenceFrameList.length)/this.calculateViewportWidth(1+this.referenceFrameList.length);for(let e of this.referenceFrameList)e.bpPerPixel*=s;const o=(i-t)/r,a=new Yb(this.genome,e,t,i,o),l=n?this.referenceFrameList.indexOf(n):this.referenceFrameList.length-1,h=1+l,{$viewport:c}=this.trackViews[0].viewports[l],d=fw(c.get(0).parentElement);if(h===this.referenceFrameList.length){this.referenceFrameList.push(a);for(let e of this.trackViews){const t=wf(e,d,a);e.viewports.push(t)}}else{this.referenceFrameList.splice(h,0,a);for(let e of this.trackViews){const t=wf(e,d,a);e.viewports.splice(h,0,t)}}this.centerLineList=this.createCenterLineList(this.columnContainer),Iw.call(this),await this.updateViews(!0)}async removeMultiLocusPanel(e){const t=this.referenceFrameList.indexOf(e),{$viewport:i}=this.trackViews[0].viewports[t];uw(t,i.parent().get(0));for(let{viewports:e}of this.trackViews)e[t].dispose(),e.splice(t,1);if(this.referenceFrameList.splice(t,1),1===this.referenceFrameList.length&&this.getRulerTrackView())for(let e of this.getRulerTrackView().viewports)e.dismissLocusLabel();const n=this.calculateViewportWidth(1+this.referenceFrameList.length)/this.calculateViewportWidth(this.referenceFrameList.length);await this.rescaleForMultiLocus(n)}async gotoMultilocusPanel(e){const t=this.referenceFrameList.indexOf(e);this.columnContainer.querySelectorAll(".igv-column").forEach(((e,i)=>{i===t||e.remove()})),this.columnContainer.querySelectorAll(".igv-column-shim").forEach((e=>e.remove()));for(let e of this.trackViews){const i=e.viewports[t];e.viewports.filter(((e,i)=>i!==t)).forEach((e=>e.dispose())),e.viewports=[i]}const i=this.calculateViewportWidth(1);e.bpPerPixel=(e.end-e.start)/i,this.referenceFrameList=[e],this.trackViews.forEach((({viewports:e})=>e.forEach((e=>e.setWidth(i))))),this.centerLineList=this.createCenterLineList(this.columnContainer),this.updateUIWithReferenceFrameList(),await this.updateViews(!0)}async rescaleForMultiLocus(e){const t=this.calculateViewportWidth(this.referenceFrameList.length);for(let t of this.referenceFrameList)t.bpPerPixel*=e;for(let{viewports:e}of this.trackViews)for(let i of e)i.setWidth(t);this.centerLineList=this.createCenterLineList(this.columnContainer),this.updateUIWithReferenceFrameList(),await this.updateViews()}async goto(e,t,i){await this.search(e+":"+t+"-"+i)}async doSearch(e,t){const i=await this.search(e,t);return i||this.alert.present(new Error(`Unrecognized locus: <b> ${e} </b>`)),i}async search(e,t){const i=await Jb(this,e);if(i&&i.length>0){this.referenceFrameList=function(e,t,i,n,r,s){return e.map((e=>{if(i&&e.gene&&(e.start=Math.max(0,e.start-i),e.end+=i),!s){const i=t.getChromosome(e.chr);Aa(i.bpLength,e,n)}const o=new Yb(t,e.chr,e.start,e.end,(e.end-e.start)/r);return o.locusSearchString=e.locusSearchString,(e.gene||e.snp)&&(o.selection=new Qb(e.gene,e.snp)),o}))}(i,this.genome,this.flanking,this.minimumBases(),this.calculateViewportWidth(i.length),this.isSoftclipped());for(let e of this.trackViews)e.removeDOMFromColumnContainer();this.columnContainer.querySelectorAll(".igv-column-shim, .igv-column").forEach((e=>e.remove())),pw(this.columnContainer.querySelector(".igv-sample-name-column"),this.referenceFrameList.length),this.centerLineList=this.createCenterLineList(this.columnContainer);for(let e of this.trackViews)e.addDOMToColumnContainer(this,this.columnContainer,this.referenceFrameList);return this.updateUIWithReferenceFrameList(),t||await this.updateViews(),!0}return!1}async loadSampleInformation(e){var t=e;Xi(e)&&(t=e.name),"fam"===t.substr(t.lastIndexOf(".")+1)&&(this.sampleInformation=await function(e,t){return(new Zb).loadPlinkFile(e,t)}(e))}on(e,t){this.eventHandlers[e]||(this.eventHandlers[e]=[]),this.eventHandlers[e].push(t)}un(e,t){this.off(e,t)}off(e,t){if(e)if(t){const i=this.eventHandlers[e];if(i&&0!==i.length){const n=i.indexOf(t);-1!==n&&this.eventHandlers[e].splice(n,1)}else console.warn("No handlers to remove for event: "+e)}else this.eventHandlers[e]=[];else this.eventHandlers={}}fireEvent(e,t,i){const n=this.eventHandlers[e];if(void 0===n||0===n.length)return;const r=i||window;return n.map((function(e){return e.apply(r,t)}))[0]}dispose(){this.removeMouseHandlers();for(let e of this.trackViews)e.dispose()}toJSON(){const e={version:"2.15.11"};if(void 0!==this.showSampleNames&&(e.showSampleNames=this.showSampleNames),200!==this.sampleNameViewportWidth&&(e.sampleNameViewportWidth=this.sampleNameViewportWidth),e.reference=this.genome.toJSON(),e.reference.fastaURL instanceof File)throw new Error(`Error. Sessions cannot include local file references ${e.reference.fastaURL.name}.`);if(e.reference.indexURL instanceof File)throw new Error(`Error. Sessions cannot include local file references ${e.reference.indexURL.name}.`);const t=[],i={};let n=!1,r=this.trackViews[0];for(let{referenceFrame:e}of r.viewports){const r=e.getLocusString();if(t.push(r),e.selection){const t={gene:e.selection.gene,snp:e.selection.snp};i[r]=t,n=!0}}e.locus=1===t.length?t[0]:t,n&&(e.gtexSelections=i),e.roi=this.roiManager.toJSON();const s=[],o=[];for(let{track:e}of this.trackViews)try{let t;t="function"==typeof e.getState?e.getState():e.config,t&&(t.browser&&delete t.browser,t.order=e.order,s.push(t))}catch(t){console.error(`Track: ${e.name}: ${t}`),o.push(`Track: ${e.name}: ${t}`)}if(o.length>0){let e=1,t="Errors encountered saving session: </br>";for(let i of o)t+=` (${e++}) ${i.toString()} <br/>`;throw Error(t)}return e.tracks=s,e}compressedSession(){return function(e){const t=new Uint8Array(e.length);for(var i=0;i<e.length;i++)t[i]=e.charCodeAt(i);const n=new yo(t),r=String.fromCharCode.apply(null,n);return btoa(r).replace(/\+/g,".").replace(/\//g,"_").replace(/=/g,"-")}(JSON.stringify(this.toJSON()))}sessionURL(){const e=window.location.href.slice(),t=e.indexOf("?");return(t>0?e.substring(0,t):e)+"?sessionURL=blob:"+this.compressedSession()}mouseDownOnViewport(e,t){var i;i=_t.pageCoordinates(e),this.vpMouseDown={viewport:t,lastMouseX:i.x,mouseDownX:i.x,lastMouseY:i.y,mouseDownY:i.y,referenceFrame:t.referenceFrame}}cancelTrackPan(){const e=this.dragObject;this.dragObject=void 0,this.isScrolling=!1,this.vpMouseDown=void 0,e&&e.viewport.referenceFrame.start!==e.start&&(this.updateViews(),this.fireEvent("trackdragend"))}isTrackPanning(){return this.dragObject}isSoftclipped(){return void 0!==this.trackViews.find((e=>!0===e.track.showSoftClips))}startTrackDrag(e){this.dragTrack=e}updateTrackDrag(e){if(e&&this.dragTrack){const t=this.dragTrack,i=this.trackViews.indexOf(e),n=this.trackViews.indexOf(t),r=this.trackViews;r[i]=t,r[n]=e;const s=this.trackViews[i].track.order;this.trackViews[n].track.order=s;const o=r.length;let a=s;if(i<n)for(let e=i+1;e<o;e++){const t=r[e].track;if(!(t.order<=a))break;t.order=Math.min(Number.MAX_SAFE_INTEGER,a+1),a=t.order}else for(let e=i-1;e>0;e--){const t=r[e].track;if(!(t.order>=a))break;t.order=Math.max(-Number.MAX_SAFE_INTEGER,a-1),a=t.order}this.reorderTracks()}}endTrackDrag(){this.dragTrack?(this.dragTrack=void 0,this.fireEvent("trackorderchanged",[this.getTrackOrder()])):this.dragTrack=void 0}addMouseHandlers(){this.addWindowResizeHandler(),this.addRootMouseUpHandler(),this.addRootMouseLeaveHandler(),this.addColumnContainerEventHandlers()}removeMouseHandlers(){this.removeWindowResizeHandler(),this.removeRootMouseUpHandler(),this.removeRootMouseLeaveHandler(),this.removeColumnContainerEventHandlers()}addWindowResizeHandler(){this.boundWindowResizeHandler=Iw.bind(this),window.addEventListener("resize",this.boundWindowResizeHandler)}removeWindowResizeHandler(){window.removeEventListener("resize",this.boundWindowResizeHandler)}addRootMouseUpHandler(){this.boundRootMouseUpHandler=Fw.bind(this),this.root.addEventListener("mouseup",this.boundRootMouseUpHandler)}removeRootMouseUpHandler(){this.root.removeEventListener("mouseup",this.boundRootMouseUpHandler)}addRootMouseLeaveHandler(){this.boundRootMouseLeaveHandler=Fw.bind(this),this.root.addEventListener("mouseleave",this.boundRootMouseLeaveHandler)}removeRootMouseLeaveHandler(){this.root.removeEventListener("mouseleave",this.boundRootMouseLeaveHandler)}addColumnContainerEventHandlers(){this.boundColumnContainerMouseMoveHandler=Nw.bind(this),this.boundColumnContainerTouchMoveHandler=Nw.bind(this),this.boundColumnContainerMouseLeaveHandler=Fw.bind(this),this.boundColumnContainerMouseUpHandler=Fw.bind(this),this.boundColumnContainerTouchEndHandler=Fw.bind(this),this.columnContainer.addEventListener("mousemove",this.boundColumnContainerMouseMoveHandler),this.columnContainer.addEventListener("touchmove",this.boundColumnContainerTouchMoveHandler),this.columnContainer.addEventListener("mouseleave",this.boundColumnContainerMouseLeaveHandler),this.columnContainer.addEventListener("mouseup",this.boundColumnContainerMouseUpHandler),this.columnContainer.addEventListener("touchend",this.boundColumnContainerTouchEndHandler)}removeColumnContainerEventHandlers(){this.columnContainer.removeEventListener("mousemove",this.boundColumnContainerMouseMoveHandler),this.columnContainer.removeEventListener("touchmove",this.boundColumnContainerTouchMoveHandler),this.columnContainer.removeEventListener("mouseleave",this.boundColumnContainerMouseLeaveHandler),this.columnContainer.removeEventListener("mouseup",this.boundColumnContainerMouseUpHandler),this.columnContainer.removeEventListener("touchend",this.boundColumnContainerTouchEndHandler)}static uncompressSession(e){let t;if(e.indexOf("/gzip;base64")>0){t=Ro(e);let i="";for(let e of t)i+=String.fromCharCode(e);return i}return function(e){e=e.replace(/\./g,"+").replace(/_/g,"/").replace(/-/g,"=");const t=atob(e),i=[];for(let e=0;e<t.length;e++)i.push(t.charCodeAt(e));const n=xo(i);let r="";for(let e of n)r+=String.fromCharCode(e);return r}(e.substring(5))}createCircularView(e,t){var i;return t=!0===t,this.circularView=(i=this,new Ru(e,{onChordClick:(e,t,n)=>{const r=e.data,s=r.mate;function o(e){e.chr=i.genome.getChromosomeName(e.refName);let t=!1;for(let n of i.referenceFrameList){const i=lu.fromLocusString(n.getLocusString());if(i.contains(e)){t=!0;break}if(i.overlaps(e)){n.extend(e),t=!0;break}}if(!t){const t=2e3,n=(e.start+e.end)/2;i.addMultiLocusPanel(e.chr,n-t,n+t)}}o(r),o(s)}})),this.circularViewControl=new vw(this.$toggle_button_container.get(0),this),this.circularView.setAssembly({name:this.genome.id,id:this.genome.id,chromosomes:Du(this.genome)}),this.circularViewVisible=t,this.circularView}get circularViewVisible(){return void 0!==this.circularView&&this.circularView.visible}set circularViewVisible(e){this.circularView&&(this.circularView.visible=e,this.circularViewControl.setState(e))}}async function Iw(){if(!this.referenceFrameList)return;const e=this.calculateViewportWidth(this.referenceFrameList.length);for(let t of this.referenceFrameList){const i=this.referenceFrameList.indexOf(t),{chr:n,genome:r}=t,{bpLength:s}=r.getChromosome(t.chr),o=t.toBP(e);Tl.isWholeGenomeView(n)||o>s?t.bpPerPixel=s/e:t.end=t.start+t.toBP(e);for(let{viewports:t}of this.trackViews)t[i].setWidth(e)}this.updateUIWithReferenceFrameList(),await this.updateViews(!0)}function Nw(e){e.preventDefault();const{x:t,y:i}=_t.pageCoordinates(e);if(this.vpMouseDown){const{viewport:e,referenceFrame:n}=this.vpMouseDown,r=Math.abs(t-this.vpMouseDown.mouseDownX)>Math.abs(i-this.vpMouseDown.mouseDownY);if(!this.dragObject&&!this.isScrolling)if(r)this.vpMouseDown.mouseDownX&&Math.abs(t-this.vpMouseDown.mouseDownX)>this.constants.dragThreshold&&(this.dragObject={viewport:e,start:n.start});else if(this.vpMouseDown.mouseDownY&&Math.abs(i-this.vpMouseDown.mouseDownY)>this.constants.scrollThreshold){this.isScrolling=!0;const t=e.$viewport.height(),i=e.trackView.maxViewportContentHeight();this.vpMouseDown.r=t/i}if(this.dragObject){const i=!this.isSoftclipped();let r=this.vpMouseDown.lastMouseX-t;n.shiftPixels(r,e.$viewport.width(),i)&&this.updateViews(),this.fireEvent("trackdrag")}if(this.isScrolling){const t=this.vpMouseDown.r*(this.vpMouseDown.lastMouseY-i);e.trackView.moveScroller(t)}this.vpMouseDown.lastMouseX=t,this.vpMouseDown.lastMouseY=i}}function Fw(e){this.cancelTrackPan(),this.endTrackDrag()}function Bw(e,t){for(let{viewports:i}of e)for(let e of i)e.$trackLabel&&(0===i.indexOf(e)&&!0===t?e.$trackLabel.show():e.$trackLabel.hide())}let Ow=[];const Dw=ea.setApiKey;!function(){var e=document.createElement("style");e.setAttribute("type","text/css"),e.innerHTML='.igv-navbar {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  box-sizing: border-box;\n  width: 100%;\n  color: #444;\n  font-size: 12px;\n  font-family: "Open Sans", sans-serif;\n  font-weight: 400;\n  line-height: 32px;\n  padding-left: 8px;\n  padding-right: 8px;\n  margin-top: 2px;\n  margin-bottom: 6px;\n  height: 32px;\n  border-style: solid;\n  border-radius: 3px;\n  border-width: thin;\n  border-color: #bfbfbf;\n  background-color: #f3f3f3;\n}\n.igv-navbar .igv-navbar-left-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  height: 32px;\n  line-height: 32px;\n}\n.igv-navbar .igv-navbar-left-container .igv-logo {\n  width: 34px;\n  height: 32px;\n  margin-right: 8px;\n}\n.igv-navbar .igv-navbar-left-container .igv-current-genome {\n  height: 32px;\n  margin-left: 4px;\n  margin-right: 4px;\n  user-select: none;\n  line-height: 32px;\n  vertical-align: middle;\n  text-align: center;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  height: 100%;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-chromosome-select-widget-container {\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n  height: 100%;\n  width: 125px;\n  margin-right: 4px;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-chromosome-select-widget-container select {\n  display: block;\n  cursor: pointer;\n  width: 100px;\n  height: 75%;\n  outline: none;\n  font-size: 12px;\n  font-family: "Open Sans", sans-serif;\n  font-weight: 400;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  margin-left: 8px;\n  height: 22px;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n  width: 210px;\n  height: 22px;\n  line-height: 22px;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container input.igv-search-input {\n  cursor: text;\n  width: 85%;\n  height: 22px;\n  line-height: 22px;\n  font-size: 12px;\n  font-family: "Open Sans", sans-serif;\n  font-weight: 400;\n  text-align: left;\n  padding-left: 8px;\n  margin-right: 8px;\n  outline: none;\n  border-style: solid;\n  border-radius: 3px;\n  border-width: thin;\n  border-color: #bfbfbf;\n  background-color: white;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container .igv-search-icon-container {\n  cursor: pointer;\n  height: 16px;\n  width: 16px;\n}\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-windowsize-panel-container {\n  margin-left: 4px;\n  user-select: none;\n}\n.igv-navbar .igv-navbar-right-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  height: 32px;\n  line-height: 32px;\n}\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  height: 100%;\n}\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container div {\n  margin-left: 0;\n  margin-right: 4px;\n}\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container div:last-child {\n  margin-left: 0;\n  margin-right: 0;\n}\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container-750 {\n  display: none;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget {\n  color: #737373;\n  font-size: 18px;\n  height: 32px;\n  line-height: 32px;\n  margin-left: 8px;\n  user-select: none;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div {\n  cursor: pointer;\n  margin-left: unset;\n  margin-right: unset;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:first-child {\n  height: 24px;\n  width: 24px;\n  margin-left: unset;\n  margin-right: 8px;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:last-child {\n  height: 24px;\n  width: 24px;\n  margin-left: 8px;\n  margin-right: unset;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:nth-child(even) {\n  display: block;\n  height: fit-content;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget input {\n  display: block;\n  width: 125px;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget svg {\n  display: block;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 {\n  color: #737373;\n  font-size: 18px;\n  height: 32px;\n  line-height: 32px;\n  margin-left: 8px;\n  user-select: none;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div {\n  cursor: pointer;\n  margin-left: unset;\n  margin-right: unset;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:first-child {\n  height: 24px;\n  width: 24px;\n  margin-left: unset;\n  margin-right: 8px;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:last-child {\n  height: 24px;\n  width: 24px;\n  margin-left: 8px;\n  margin-right: unset;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:nth-child(even) {\n  width: 0;\n  height: 0;\n  display: none;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 input {\n  width: 0;\n  height: 0;\n  display: none;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 svg {\n  display: block;\n}\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-hidden {\n  display: none;\n}\n\n.igv-navbar-button {\n  display: block;\n  box-sizing: unset;\n  padding-left: 6px;\n  padding-right: 6px;\n  height: 18px;\n  text-transform: capitalize;\n  user-select: none;\n  line-height: 18px;\n  text-align: center;\n  vertical-align: middle;\n  font-family: "Open Sans", sans-serif;\n  font-size: 11px;\n  font-weight: 200;\n  color: #737373;\n  background-color: #f3f3f3;\n  border-color: #737373;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 6px;\n}\n\n.igv-navbar-button-clicked {\n  color: white;\n  background-color: #737373;\n}\n\n.igv-navbar-button:hover {\n  cursor: pointer;\n}\n\n.igv-zoom-in-notice-container {\n  z-index: 1024;\n  position: absolute;\n  top: 8px;\n  left: 50%;\n  transform: translate(-50%, 0%);\n  display: flex;\n  flex-direction: row;\n  flex-wrap: nowrap;\n  justify-content: center;\n  align-items: center;\n  background-color: white;\n}\n.igv-zoom-in-notice-container > div {\n  padding-left: 4px;\n  padding-right: 4px;\n  padding-top: 2px;\n  padding-bottom: 2px;\n  width: 100%;\n  height: 100%;\n  font-family: "Open Sans", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  color: #3f3f3f;\n}\n\n.igv-zoom-in-notice {\n  position: absolute;\n  top: 10px;\n  left: 50%;\n}\n.igv-zoom-in-notice div {\n  position: relative;\n  left: -50%;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  color: #3f3f3f;\n  background-color: rgba(255, 255, 255, 0.51);\n  z-index: 64;\n}\n\n.igv-container-spinner {\n  position: absolute;\n  top: 90%;\n  left: 50%;\n  transform: translate(-50%, -50%);\n  z-index: 1024;\n  width: 24px;\n  height: 24px;\n  pointer-events: none;\n  color: #737373;\n}\n\n.igv-multi-locus-close-button {\n  position: absolute;\n  top: 2px;\n  right: 0;\n  padding-left: 2px;\n  padding-right: 2px;\n  width: 12px;\n  height: 12px;\n  color: #666666;\n  background-color: white;\n  z-index: 1000;\n}\n.igv-multi-locus-close-button > svg {\n  vertical-align: top;\n}\n\n.igv-multi-locus-close-button:hover {\n  cursor: pointer;\n  color: #434343;\n}\n\n.igv-multi-locus-ruler-label {\n  z-index: 64;\n  position: absolute;\n  top: 2px;\n  left: 0;\n  width: 100%;\n  height: 12px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: center;\n  align-items: center;\n}\n.igv-multi-locus-ruler-label > div {\n  font-family: "Open Sans", sans-serif;\n  font-size: 12px;\n  color: rgb(16, 16, 16);\n  background-color: white;\n}\n.igv-multi-locus-ruler-label > div {\n  cursor: pointer;\n}\n\n.igv-multi-locus-ruler-label-square-dot {\n  z-index: 64;\n  position: absolute;\n  left: 50%;\n  top: 5%;\n  transform: translate(-50%, 0%);\n  background-color: white;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-multi-locus-ruler-label-square-dot > div:first-child {\n  width: 14px;\n  height: 14px;\n}\n.igv-multi-locus-ruler-label-square-dot > div:last-child {\n  margin-left: 16px;\n  font-family: "Open Sans", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  color: rgb(16, 16, 16);\n}\n\n.igv-ruler-sweeper {\n  display: none;\n  pointer-events: none;\n  position: absolute;\n  top: 26px;\n  bottom: 0;\n  left: 0;\n  width: 0;\n  z-index: 99999;\n  background-color: rgba(68, 134, 247, 0.25);\n}\n\n.igv-ruler-tooltip {\n  pointer-events: none;\n  z-index: 128;\n  position: absolute;\n  top: 0;\n  left: 0;\n  width: 1px;\n  height: 32px;\n  background-color: transparent;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-ruler-tooltip > div {\n  pointer-events: none;\n  width: 128px;\n  height: auto;\n  padding: 1px;\n  color: #373737;\n  font-size: 10px;\n  font-family: "Open Sans", sans-serif;\n  font-weight: 400;\n  background-color: white;\n  border-style: solid;\n  border-width: thin;\n  border-color: #373737;\n}\n\n.igv-track-label {\n  position: absolute;\n  left: 8px;\n  top: 8px;\n  width: auto;\n  height: auto;\n  max-width: 50%;\n  padding-left: 4px;\n  padding-right: 4px;\n  white-space: nowrap;\n  overflow: hidden;\n  text-overflow: ellipsis;\n  font-family: "Open Sans", sans-serif;\n  font-size: small;\n  font-weight: 400;\n  text-align: center;\n  user-select: none;\n  -moz-user-select: none;\n  -webkit-user-select: none;\n  border-color: #444;\n  border-radius: 2px;\n  border-style: solid;\n  border-width: thin;\n  background-color: white;\n  z-index: 128;\n  cursor: pointer;\n}\n\n.igv-track-label:hover,\n.igv-track-label:focus,\n.igv-track-label:active {\n  background-color: #e8e8e8;\n}\n\n.igv-track-label-popup-shim {\n  padding-left: 8px;\n  padding-right: 8px;\n  padding-top: 4px;\n}\n\n.igv-center-line {\n  display: none;\n  pointer-events: none;\n  position: absolute;\n  top: 0;\n  bottom: 0;\n  left: 50%;\n  transform: translateX(-50%);\n  z-index: 8;\n  user-select: none;\n  -moz-user-select: none;\n  -webkit-user-select: none;\n  border-left-style: dashed;\n  border-left-width: thin;\n  border-right-style: dashed;\n  border-right-width: thin;\n}\n\n.igv-center-line-wide {\n  background-color: rgba(0, 0, 0, 0);\n  border-left-color: rgba(127, 127, 127, 0.51);\n  border-right-color: rgba(127, 127, 127, 0.51);\n}\n\n.igv-center-line-thin {\n  background-color: rgba(0, 0, 0, 0);\n  border-left-color: rgba(127, 127, 127, 0.51);\n  border-right-color: rgba(0, 0, 0, 0);\n}\n\n.igv-cursor-guide-horizontal {\n  display: none;\n  pointer-events: none;\n  user-select: none;\n  -moz-user-select: none;\n  -webkit-user-select: none;\n  position: absolute;\n  left: 0;\n  right: 0;\n  top: 50%;\n  height: 1px;\n  z-index: 1;\n  margin-left: 50px;\n  margin-right: 54px;\n  border-top-style: dotted;\n  border-top-width: thin;\n  border-top-color: rgba(127, 127, 127, 0.76);\n}\n\n.igv-cursor-guide-vertical {\n  pointer-events: none;\n  user-select: none;\n  -moz-user-select: none;\n  -webkit-user-select: none;\n  position: absolute;\n  top: 0;\n  bottom: 0;\n  left: 50%;\n  width: 1px;\n  z-index: 1;\n  border-left-style: dotted;\n  border-left-width: thin;\n  border-left-color: rgba(127, 127, 127, 0.76);\n  display: none;\n}\n\n.igv-user-feedback {\n  position: fixed;\n  top: 50%;\n  left: 50%;\n  transform: translate(-50%, -50%);\n  width: 512px;\n  height: 360px;\n  z-index: 2048;\n  background-color: white;\n  border-color: #a2a2a2;\n  border-style: solid;\n  border-width: thin;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  color: #444;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-user-feedback div:first-child {\n  position: relative;\n  height: 24px;\n  width: 100%;\n  background-color: white;\n  border-bottom-color: #a2a2a2;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-user-feedback div:first-child div {\n  position: absolute;\n  top: 2px;\n  width: 16px;\n  height: 16px;\n  background-color: transparent;\n}\n.igv-user-feedback div:first-child div:first-child {\n  left: 8px;\n}\n.igv-user-feedback div:first-child div:last-child {\n  cursor: pointer;\n  right: 8px;\n}\n.igv-user-feedback div:last-child {\n  width: 100%;\n  height: calc(100% - 24px);\n  border-width: 0;\n}\n.igv-user-feedback div:last-child div {\n  width: auto;\n  height: auto;\n  margin: 8px;\n}\n\n.igv-generic-dialog-container {\n  position: absolute;\n  top: 0;\n  left: 0;\n  width: 300px;\n  height: 200px;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  z-index: 2048;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-header {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-generic-dialog-container .igv-generic-dialog-header div {\n  margin-right: 4px;\n  margin-bottom: 2px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-generic-dialog-container .igv-generic-dialog-header div:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-generic-dialog-container .igv-generic-dialog-one-liner {\n  color: #373737;\n  width: 95%;\n  height: 24px;\n  line-height: 24px;\n  text-align: left;\n  margin-top: 8px;\n  padding-left: 8px;\n  overflow-wrap: break-word;\n  background-color: white;\n}\n.igv-generic-dialog-container .igv-generic-dialog-label-input {\n  margin-top: 8px;\n  width: 95%;\n  height: 24px;\n  color: #373737;\n  line-height: 24px;\n  padding-left: 8px;\n  background-color: white;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-label-input div {\n  width: 30%;\n  height: 100%;\n  font-size: 16px;\n  text-align: right;\n  padding-right: 8px;\n  background-color: white;\n}\n.igv-generic-dialog-container .igv-generic-dialog-label-input input {\n  display: block;\n  height: 100%;\n  width: 100%;\n  padding-left: 4px;\n  font-family: "Open Sans", sans-serif;\n  font-weight: 400;\n  color: #373737;\n  text-align: left;\n  outline: none;\n  border-style: solid;\n  border-width: thin;\n  border-color: #7F7F7F;\n  background-color: white;\n}\n.igv-generic-dialog-container .igv-generic-dialog-label-input input {\n  width: 50%;\n  font-size: 16px;\n}\n.igv-generic-dialog-container .igv-generic-dialog-input {\n  margin-top: 8px;\n  width: calc(100% - 16px);\n  height: 24px;\n  color: #373737;\n  line-height: 24px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-input input {\n  display: block;\n  height: 100%;\n  width: 100%;\n  padding-left: 4px;\n  font-family: "Open Sans", sans-serif;\n  font-weight: 400;\n  color: #373737;\n  text-align: left;\n  outline: none;\n  border-style: solid;\n  border-width: thin;\n  border-color: #7F7F7F;\n  background-color: white;\n}\n.igv-generic-dialog-container .igv-generic-dialog-input input {\n  font-size: 16px;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel {\n  width: 100%;\n  height: 28px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div {\n  margin-top: 32px;\n  color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  width: 75px;\n  height: 28px;\n  line-height: 28px;\n  text-align: center;\n  border-color: transparent;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 2px;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:first-child {\n  margin-left: 32px;\n  margin-right: 0;\n  background-color: #5ea4e0;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:last-child {\n  margin-left: 0;\n  margin-right: 32px;\n  background-color: #c4c4c4;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:first-child:hover {\n  cursor: pointer;\n  background-color: #3b5c7f;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:last-child:hover {\n  cursor: pointer;\n  background-color: #7f7f7f;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok {\n  width: 100%;\n  height: 36px;\n  margin-top: 32px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok div {\n  width: 98px;\n  height: 36px;\n  line-height: 36px;\n  text-align: center;\n  color: white;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  border-color: white;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 4px;\n  background-color: #2B81AF;\n}\n.igv-generic-dialog-container .igv-generic-dialog-ok div:hover {\n  cursor: pointer;\n  background-color: #25597f;\n}\n\n.igv-generic-container {\n  position: absolute;\n  top: 0;\n  left: 0;\n  z-index: 2048;\n  background-color: white;\n  cursor: pointer;\n  display: flex;\n  flex-direction: row;\n  flex-wrap: wrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-generic-container div:first-child {\n  cursor: move;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  height: 24px;\n  width: 100%;\n  background-color: #dddddd;\n}\n.igv-generic-container div:first-child i {\n  display: block;\n  color: #5f5f5f;\n  cursor: pointer;\n  width: 14px;\n  height: 14px;\n  margin-right: 8px;\n  margin-bottom: 4px;\n}\n\n.igv-menu-popup {\n  position: absolute;\n  top: 0;\n  left: 0;\n  width: max-content;\n  z-index: 4096;\n  cursor: pointer;\n  font-family: "Open Sans", sans-serif;\n  font-size: small;\n  font-weight: 400;\n  color: #4b4b4b;\n  background: white;\n  border-radius: 4px;\n  border-color: #7F7F7F;\n  border-style: solid;\n  border-width: thin;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-end;\n  text-align: left;\n}\n.igv-menu-popup > div:not(:first-child) {\n  width: 100%;\n}\n.igv-menu-popup > div:not(:first-child) > div {\n  background: white;\n}\n.igv-menu-popup > div:not(:first-child) > div.context-menu {\n  padding-left: 4px;\n  padding-right: 4px;\n}\n.igv-menu-popup > div:not(:first-child) > div:last-child {\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n  border-bottom-color: transparent;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-menu-popup > div:not(:first-child) > div:hover {\n  background: #efefef;\n}\n\n.igv-menu-popup-shim {\n  padding-left: 8px;\n  padding-right: 8px;\n  padding-bottom: 1px;\n  padding-top: 1px;\n}\n\n.igv-menu-popup-header {\n  position: relative;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-color: transparent;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n}\n.igv-menu-popup-header div {\n  margin-right: 4px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-menu-popup-header div:hover {\n  cursor: pointer;\n  color: #444;\n}\n\n.igv-menu-popup-check-container {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n  width: 100%;\n  height: 20px;\n  margin-right: 4px;\n  background-color: transparent;\n}\n.igv-menu-popup-check-container div {\n  padding-top: 2px;\n  padding-left: 8px;\n}\n.igv-menu-popup-check-container div:first-child {\n  position: relative;\n  width: 12px;\n  height: 12px;\n}\n.igv-menu-popup-check-container div:first-child svg {\n  position: absolute;\n  width: 12px;\n  height: 12px;\n}\n\n.igv-user-feedback {\n  position: fixed;\n  top: 50%;\n  left: 50%;\n  transform: translate(-50%, -50%);\n  width: 512px;\n  height: 360px;\n  z-index: 2048;\n  background-color: white;\n  border-color: #a2a2a2;\n  border-style: solid;\n  border-width: thin;\n  font-family: "Open Sans", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  color: #444;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-user-feedback div:first-child {\n  position: relative;\n  height: 24px;\n  width: 100%;\n  background-color: white;\n  border-bottom-color: #a2a2a2;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-user-feedback div:first-child div {\n  position: absolute;\n  top: 2px;\n  width: 16px;\n  height: 16px;\n  background-color: transparent;\n}\n.igv-user-feedback div:first-child div:first-child {\n  left: 8px;\n}\n.igv-user-feedback div:first-child div:last-child {\n  cursor: pointer;\n  right: 8px;\n}\n.igv-user-feedback div:last-child {\n  width: 100%;\n  height: calc(100% - 24px);\n  border-width: 0;\n}\n.igv-user-feedback div:last-child div {\n  width: auto;\n  height: auto;\n  margin: 8px;\n}\n\n.igv-loading-spinner-container {\n  z-index: 1024;\n  position: absolute;\n  top: 50%;\n  left: 50%;\n  transform: translate(-50%, -50%);\n  width: 32px;\n  height: 32px;\n  display: flex;\n  flex-direction: row;\n  flex-wrap: nowrap;\n  justify-content: center;\n  align-items: center;\n}\n.igv-loading-spinner-container > div {\n  box-sizing: border-box;\n  width: 100%;\n  height: 100%;\n  border-radius: 50%;\n  border: 4px solid rgba(128, 128, 128, 0.5);\n  border-top-color: rgb(255, 255, 255);\n  animation: spin 1s ease-in-out infinite;\n  -webkit-animation: spin 1s ease-in-out infinite;\n}\n\n@keyframes spin {\n  to {\n    -webkit-transform: rotate(360deg);\n    transform: rotate(360deg);\n  }\n}\n@-webkit-keyframes spin {\n  to {\n    -webkit-transform: rotate(360deg);\n    transform: rotate(360deg);\n  }\n}\n.igv-roi-menu-next-gen {\n  position: absolute;\n  z-index: 512;\n  font-family: "Open Sans", sans-serif;\n  font-size: small;\n  font-weight: 400;\n  color: #4b4b4b;\n  background-color: white;\n  width: 192px;\n  border-radius: 4px;\n  border-color: #7F7F7F;\n  border-style: solid;\n  border-width: thin;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n}\n.igv-roi-menu-next-gen > div:first-child {\n  height: 24px;\n  border-top-color: transparent;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n}\n.igv-roi-menu-next-gen > div:first-child > div {\n  margin-right: 4px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-roi-menu-next-gen > div:first-child > div:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-roi-menu-next-gen > div:last-child {\n  background-color: white;\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n  border-bottom-color: transparent;\n  border-bottom-style: solid;\n  border-bottom-width: 0;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n  text-align: start;\n  vertical-align: middle;\n}\n.igv-roi-menu-next-gen > div:last-child > div {\n  height: 24px;\n  padding-left: 4px;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  border-bottom-color: #7f7f7f;\n}\n.igv-roi-menu-next-gen > div:last-child > div:not(:first-child):hover {\n  background-color: rgba(127, 127, 127, 0.1);\n}\n.igv-roi-menu-next-gen > div:last-child div:first-child {\n  font-style: italic;\n  text-align: center;\n  padding-right: 4px;\n  white-space: nowrap;\n  overflow: hidden;\n  text-overflow: ellipsis;\n}\n.igv-roi-menu-next-gen > div:last-child > div:last-child {\n  border-bottom-width: 0;\n  border-bottom-color: transparent;\n}\n\n.igv-roi-placeholder {\n  font-style: normal;\n  color: rgba(75, 75, 75, 0.6);\n}\n\n.igv-roi-table {\n  position: absolute;\n  z-index: 1024;\n  width: min-content;\n  max-width: 1600px;\n  border-color: #7f7f7f;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: "Open Sans", sans-serif;\n  font-size: 12px;\n  font-weight: 400;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n  cursor: default;\n}\n.igv-roi-table > div {\n  height: 24px;\n  font-size: 14px;\n  text-align: start;\n  vertical-align: middle;\n  line-height: 24px;\n}\n.igv-roi-table > div:first-child {\n  border-color: transparent;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-top-width: 0;\n  border-bottom-color: #7f7f7f;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n  cursor: move;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n}\n.igv-roi-table > div:first-child > div:first-child {\n  text-align: center;\n  white-space: nowrap;\n  text-overflow: ellipsis;\n  overflow: hidden;\n  margin-left: 4px;\n  margin-right: 4px;\n  width: calc(100% - 4px - 12px);\n}\n.igv-roi-table > div:first-child > div:last-child {\n  margin-right: 4px;\n  margin-bottom: 2px;\n  height: 12px;\n  width: 12px;\n  color: #7f7f7f;\n}\n.igv-roi-table > div:first-child > div:last-child > svg {\n  display: block;\n}\n.igv-roi-table > div:first-child > div:last-child:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-roi-table > .igv-roi-table-description {\n  padding: 4px;\n  margin-left: 4px;\n  word-break: break-all;\n  overflow-y: auto;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  background-color: transparent;\n}\n.igv-roi-table > .igv-roi-table-goto-explainer {\n  margin-top: 5px;\n  margin-left: 4px;\n  color: #7F7F7F;\n  font-style: italic;\n  height: 24px;\n  border-top: solid lightgray;\n  background-color: transparent;\n}\n.igv-roi-table > .igv-roi-table-column-titles {\n  height: 24px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: stretch;\n  align-items: stretch;\n  padding-right: 16px;\n  background-color: white;\n  border-top-color: #7f7f7f;\n  border-top-style: solid;\n  border-top-width: thin;\n  border-bottom-color: #7f7f7f;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-roi-table > .igv-roi-table-column-titles > div {\n  font-size: 14px;\n  vertical-align: middle;\n  line-height: 24px;\n  text-align: left;\n  margin-left: 4px;\n  height: 24px;\n  overflow: hidden;\n  text-overflow: ellipsis;\n  border-right-color: #7f7f7f;\n  border-right-style: solid;\n  border-right-width: thin;\n}\n.igv-roi-table > .igv-roi-table-column-titles > div:last-child {\n  border-right: unset;\n}\n.igv-roi-table > .igv-roi-table-row-container {\n  overflow: auto;\n  resize: both;\n  max-width: 1600px;\n  height: 360px;\n  background-color: transparent;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n}\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row {\n  height: 24px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: stretch;\n  align-items: stretch;\n}\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row > div {\n  font-size: 14px;\n  vertical-align: middle;\n  line-height: 24px;\n  text-align: left;\n  margin-left: 4px;\n  height: 24px;\n  white-space: nowrap;\n  overflow: hidden;\n  text-overflow: ellipsis;\n  border-right-color: transparent;\n  border-right-style: solid;\n  border-right-width: thin;\n}\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row > div:last-child {\n  border-right: unset;\n}\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row-hover {\n  background-color: rgba(0, 0, 0, 0.04);\n}\n.igv-roi-table > div:last-child {\n  height: 32px;\n  line-height: 32px;\n  border-top-color: #7f7f7f;\n  border-top-style: solid;\n  border-top-width: thin;\n  border-bottom-color: transparent;\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n  border-bottom-width: 0;\n  background-color: #eee;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n\n.igv-roi-table-row-selected {\n  background-color: rgba(0, 0, 0, 0.125);\n}\n\n.igv-roi-table-button {\n  cursor: pointer;\n  height: 20px;\n  user-select: none;\n  line-height: 20px;\n  text-align: center;\n  vertical-align: middle;\n  font-family: "Open Sans", sans-serif;\n  font-size: 13px;\n  font-weight: 400;\n  color: black;\n  padding-left: 6px;\n  padding-right: 6px;\n  background-color: rgb(239, 239, 239);\n  border-color: black;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 3px;\n}\n\n.igv-roi-table-button:hover {\n  font-weight: 400;\n  background-color: rgba(0, 0, 0, 0.13);\n}\n\n.igv-roi-region {\n  z-index: 64;\n  position: absolute;\n  top: 0;\n  bottom: 0;\n  pointer-events: none;\n  overflow: visible;\n  margin-top: 44px;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n}\n.igv-roi-region > div {\n  position: relative;\n  width: 100%;\n  height: 8px;\n  pointer-events: auto;\n}\n\n.igv-roi-menu {\n  position: absolute;\n  z-index: 1024;\n  width: 144px;\n  border-color: #7f7f7f;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: "Open Sans", sans-serif;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n}\n.igv-roi-menu > div:not(:last-child) {\n  border-bottom-color: rgba(128, 128, 128, 0.5);\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n}\n.igv-roi-menu > div:first-child {\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-top-color: transparent;\n  border-top-style: solid;\n  border-top-width: 0;\n}\n.igv-roi-menu > div:last-child {\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n  border-bottom-color: transparent;\n  border-bottom-style: solid;\n  border-bottom-width: 0;\n}\n\n.igv-roi-menu-row {\n  height: 24px;\n  padding-left: 8px;\n  font-size: small;\n  text-align: start;\n  vertical-align: middle;\n  line-height: 24px;\n  background-color: white;\n}\n\n.igv-roi-menu-row-edit-description {\n  width: -webkit-fill-available;\n  font-size: small;\n  text-align: start;\n  vertical-align: middle;\n  background-color: white;\n  padding-left: 4px;\n  padding-right: 4px;\n  padding-bottom: 4px;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: stretch;\n  align-items: stretch;\n}\n.igv-roi-menu-row-edit-description > label {\n  margin-left: 2px;\n  margin-bottom: 0;\n  display: block;\n  width: -webkit-fill-available;\n}\n.igv-roi-menu-row-edit-description > input {\n  display: block;\n  margin-left: 2px;\n  margin-right: 2px;\n  margin-bottom: 1px;\n  width: -webkit-fill-available;\n}\n\n.igv-container {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  padding-top: 4px;\n  user-select: none;\n  -webkit-user-select: none;\n  -ms-user-select: none;\n}\n\n.igv-viewport {\n  position: relative;\n  margin-top: 5px;\n  line-height: 1;\n  overflow-x: hidden;\n  overflow-y: hidden;\n}\n\n.igv-viewport-content {\n  position: relative;\n  width: 100%;\n}\n.igv-viewport-content > canvas {\n  position: relative;\n  display: block;\n}\n\n.igv-column-container {\n  position: relative;\n  display: flex;\n  flex-direction: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: stretch;\n  width: 100%;\n}\n\n.igv-column-shim {\n  width: 1px;\n  margin-left: 2px;\n  margin-right: 2px;\n  background-color: #545453;\n}\n\n.igv-column {\n  position: relative;\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n}\n\n.igv-axis-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n  width: 50px;\n}\n.igv-axis-column > div {\n  margin-top: 5px;\n  width: 100%;\n}\n\n.igv-sample-name-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n}\n\n.igv-scrollbar-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n  width: 14px;\n}\n.igv-scrollbar-column > div {\n  position: relative;\n  margin-top: 5px;\n  width: 14px;\n}\n.igv-scrollbar-column > div > div {\n  cursor: pointer;\n  position: absolute;\n  top: 0;\n  left: 2px;\n  width: 8px;\n  border-width: 1px;\n  border-style: solid;\n  border-color: #c4c4c4;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-left-radius: 4px;\n  border-bottom-right-radius: 4px;\n}\n.igv-scrollbar-column > div > div:hover {\n  background-color: #c4c4c4;\n}\n\n.igv-track-drag-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n  width: 12px;\n  background-color: white;\n}\n.igv-track-drag-column > .igv-track-drag-handle {\n  z-index: 512;\n  position: relative;\n  cursor: pointer;\n  margin-top: 5px;\n  width: 100%;\n  border-style: solid;\n  border-width: 0;\n  border-top-right-radius: 6px;\n  border-bottom-right-radius: 6px;\n  background-color: #c4c4c4;\n}\n.igv-track-drag-column .igv-track-drag-handle-hover {\n  background-color: #787878;\n}\n.igv-track-drag-column > .igv-track-drag-shim {\n  position: relative;\n  margin-top: 5px;\n  width: 100%;\n  border-style: solid;\n  border-width: 0;\n}\n\n.igv-gear-menu-column {\n  position: relative;\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: flex-start;\n  box-sizing: border-box;\n  height: 100%;\n  width: 28px;\n}\n.igv-gear-menu-column > div {\n  display: flex;\n  flex-direction: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n  margin-top: 5px;\n  width: 100%;\n  background: white;\n}\n.igv-gear-menu-column > div > div {\n  position: relative;\n  margin-top: 4px;\n  width: 16px;\n  height: 16px;\n  color: #7F7F7F;\n}\n.igv-gear-menu-column > div > div:hover {\n  cursor: pointer;\n  color: #444;\n}\n\n/*# sourceMappingURL=dom.css.map */\n',document.head.append(e)}();const Pw=ea.oauth;var zw={TrackUtils:ja,IGVGraphics:va,MenuUtils:Hi,DataRangeDialog:qi,createTrack:async function(e,t){return await Lw.prototype.createTrack.call(t,e)},createBrowser:async function(e,t){void 0===t&&(t={}),Tl.KNOWN_GENOMES||await Tl.initializeGenomes(t),function(e){void 0===e.minimumBases&&(e.minimumBases=40);void 0===e.showIdeogram&&(e.showIdeogram=!0);void 0===e.showCircularView&&(e.showCircularView=!1);void 0===e.showCircularViewButton&&(e.showCircularViewButton=!1);void 0===e.showTrackLabelButton&&(e.showTrackLabelButton=!0);void 0===e.showTrackLabels&&(e.showTrackLabels=!0);void 0===e.showROITableButton&&(e.showROITableButton=!1);void 0===e.showROITable&&(e.showROITable=!1);void 0===e.showCursorTrackingGuideButton&&(e.showCursorTrackingGuideButton=!0);void 0===e.showCursorGuide&&(e.showCursorGuide=e.showCursorTrackingGuide||!1);void 0===e.showCenterGuideButton&&(e.showCenterGuideButton=!0);void 0===e.showCenterGuide&&(e.showCenterGuide=!1);void 0===e.showSampleNames&&(e.showSampleNames=!1);void 0===e.showSVGButton&&(e.showSVGButton=!0);void 0===e.showControls&&(e.showControls=!0);void 0===e.showNavigation&&(e.showNavigation=!0);void 0===e.showRuler&&(e.showRuler=!0);void 0===e.flanking&&(e.flanking=1e3);void 0===e.pairsSupported&&(e.pairsSupported=!0);e.tracks||(e.tracks=[])}(t),t.queryParametersSupported&&function(e){var t,i,n,r,s,o,a,l,h;let c,d,u;if(a=window.location.href,s={},t=a.indexOf("?"),i=a.lastIndexOf("#"),t>=0)for(i<0&&(i=a.length),n=t+1;n<i;)(r=a.indexOf("&",n))<0&&(r=i),2===(o=a.substring(n,r).split("=",2)).length?(l=o[0],h=decodeURIComponent(o[1]),"file"===l?c=h.split(","):"index"===l?d=h.split(","):"name"===l?u=h.split(","):"genome"!==l||!h.startsWith("https://")&&!h.startsWith("http://")||h.endsWith(".json")?e[l]=h:e.reference={fastaURL:h,indexURL:h+".fai"},n=r+1):n++;if(c){e.tracks||(e.tracks=[]);for(let t=0;t<c.length;t++){if(c[t].endsWith(".xml")||c[t].endsWith(".json")){e.sessionURL=c[t];break}const i={url:c[t]};d&&d.length>t&&(i.indexURL=d[t]),u&&u.length>t&&(i.name=u[t]),e.tracks.push(i)}}}(t),t.apiKey&&ea.setApiKey(t.apiKey),t.oauthToken&&ea.setOauthToken(t.oauthToken),t.clientId&&!Wo()&&await async function(e){if(!google.accounts.oauth2.initTokenClient)throw new Error("Google accounts token client not loaded (https://accounts.google.com/gsi/client)");if(Wo())throw new Error("Google client is already initialized");const t={client_id:e.client_id,scope:e.scope||"https://www.googleapis.com/auth/userinfo.profile",state:e.state||"igv",error:e=>{throw new Error(e.type)},hint:e.hint,hosted_domain:e.hosted_domain},i=google.accounts.oauth2.initTokenClient(t);google.igv={tokenClient:i,apiKey:e.apiKey}}({clientId:t.clientId,apiKey:t.apiKey,scope:"https://www.googleapis.com/auth/userinfo.profile"});const i=new Lw(t,e);return Ow.push(i),t.sessionURL?await i.loadSession({url:t.sessionURL}):await i.loadSessionObject(t),i.navbarManager.navbarDidResize(i.$navigation.width()),i},removeBrowser:function(e){e.dispose(),e.root.remove(),Ow=Ow.filter((t=>t!==e))},removeAllBrowsers:function(){for(let e of Ow)e.dispose(),e.root.remove();Ow=[]},visibilityChange:async function(){for(let e of Ow)await e.visibilityChange()},setGoogleOauthToken:function(e){return ea.setOauthToken(e)},setOauthToken:function(e,t){return ea.setOauthToken(e,t)},oauth:Pw,version:Al,setApiKey:Dw,registerFileFormats:qa};return zw}));
+//# sourceMappingURL=igv.min.js.map
diff --git a/igv_component/node_modules/igv/dist/igv.min.js.map b/igv_component/node_modules/igv/dist/igv.min.js.map
new file mode 100644
index 0000000000000000000000000000000000000000..79adc05100546f2e6e327b2e8c38d2c1583af2aa
--- /dev/null
+++ b/igv_component/node_modules/igv/dist/igv.min.js.map
@@ -0,0 +1 @@
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[this[j]] : []);\n    },\n\n    end: function () {\n        return this.prevObject || this.constructor();\n    },\n\n    // For internal use only.\n    // Behaves like an Array's method, not like a jQuery method.\n    push: push,\n    sort: arr.sort,\n    splice: arr.splice\n};\n\njQuery.extend = jQuery.fn.extend = function () {\n    var options, name, src, copy, copyIsArray, clone,\n        target = arguments[0] || {},\n        i = 1,\n        length = arguments.length,\n        deep = false;\n\n    // Handle a deep copy situation\n    if (typeof target === \"boolean\") {\n        deep = target;\n\n        // Skip the boolean and the target\n        target = arguments[i] || {};\n        i++;\n    }\n\n    // Handle case when target is a string or something (possible in deep copy)\n    if (typeof target !== \"object\" && !isFunction(target)) {\n        target = {};\n    }\n\n    // Extend jQuery itself if only one argument is passed\n    if (i === length) {\n        target = this;\n    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createCache(),\n            compilerCache = createCache(),\n            sortOrder = function (a, b) {\n                if (a === b) {\n                    hasDuplicate = true;\n                }\n                return 0;\n            },\n\n            // Instance methods\n            hasOwn = ({}).hasOwnProperty,\n            arr = [],\n            pop = arr.pop,\n            push_native = arr.push,\n            push = arr.push,\n            slice = arr.slice,\n            // Use a stripped-down indexOf as it's faster than native\n            // https://jsperf.com/thor-indexof-vs-for/5\n            indexOf = function (list, elem) {\n                var i = 0,\n                    len = list.length;\n                for (; i < len; i++) {\n                    if (list[i] === elem) {\n                        return i;\n                    }\n                }\n                return -1;\n            },\n\n            booleans = 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\"*\\\\]\",\n\n            pseudos = \":(\" + identifier + \")(?:\\\\((\" +\n                // To reduce the number of selectors needing tokenize in the preFilter, prefer arguments:\n                // 1. quoted (capture 3; capture 4 or capture 5)\n                \"('((?:\\\\\\\\.|[^\\\\\\\\'])*)'|\\\"((?:\\\\\\\\.|[^\\\\\\\\\\\"])*)\\\")|\" +\n                // 2. simple (capture 6)\n                \"((?:\\\\\\\\.|[^\\\\\\\\()[\\\\]]|\" + attributes + \")*)|\" +\n                // 3. anything else (capture 2)\n                \".*\" +\n                \")\\\\)|)\",\n\n            // Leading and non-escaped trailing whitespace, capturing some non-whitespace characters preceding the latter\n            rwhitespace = new RegExp(whitespace + \"+\", \"g\"),\n            rtrim = new RegExp(\"^\" + whitespace + \"+|((?:^|[^\\\\\\\\])(?:\\\\\\\\.)*)\" + whitespace + \"+$\", \"g\"),\n\n            rcomma = new RegExp(\"^\" + whitespace + \"*,\" + whitespace + \"*\"),\n            rcombinators = new RegExp(\"^\" + whitespace + \"*([>+~]|\" + whitespace + \")\" + whitespace + \"*\"),\n\n            rattributeQuotes = new RegExp(\"=\" + whitespace + \"*([^\\\\]'\\\"]*?)\" + whitespace + \"*\\\\]\", \"g\"),\n\n            rpseudo = new RegExp(pseudos),\n            ridentifier = new RegExp(\"^\" + identifier + \"$\"),\n\n            matchExpr = {\n                \"ID\": new RegExp(\"^#(\" + identifier + \")\"),\n                \"CLASS\": new RegExp(\"^\\\\.(\" + identifier + \")\"),\n                \"TAG\": new RegExp(\"^(\" + identifier + \"|[*])\"),\n                \"ATTR\": new RegExp(\"^\" + attributes),\n                \"PSEUDO\": new RegExp(\"^\" + pseudos),\n                \"CHILD\": new RegExp(\"^:(only|first|last|nth|nth-last)-(child|of-type)(?:\\\\(\" + whitespace +\n                    \"*(even|odd|(([+-]|)(\\\\d*)n|)\" + whitespace + \"*(?:([+-]|)\" + whitespace +\n                    \"*(\\\\d+)|))\" + whitespace + \"*\\\\)|)\", \"i\"),\n                \"bool\": new RegExp(\"^(?:\" + booleans + \")$\", \"i\"),\n                // For use in libraries implementing .is()\n                // We use this for POS matching in `select`\n                \"needsContext\": new RegExp(\"^\" + whitespace + \"*[>+~]|:(even|odd|eq|gt|lt|nth|first|last)(?:\\\\(\" +\n                    whitespace + \"*((?:-\\\\d)?\\\\d*)\" + whitespace + \"*\\\\)|)(?=[^-]|$)\", \"i\")\n            },\n\n            rinputs = /^(?:input|select|textarea|button)$/i,\n            rheader = /^h\\d$/i,\n\n            rnative = /^[^{]+\\{\\s*\\[native \\w/,\n\n            // Easily-parseable/retrievable ID or TAG or CLASS selectors\n            rquickExpr = /^(?:#([\\w-]+)|(\\w+)|\\.([\\w-]+))$/,\n\n            rsibling = /[+~]/,\n\n            // CSS escapes\n            // http://www.w3.org/TR/CSS21/syndata.html#escaped-characters\n            runescape = new RegExp(\"\\\\\\\\([\\\\da-f]{1,6}\" + whitespace + \"?|(\" + whitespace + \")|.)\", \"ig\"),\n            funescape = function (_, escaped, escapedWhitespace) {\n                var high = \"0x\" + escaped - 0x10000;\n                // NaN means non-codepoint\n                // Support: Firefox<24\n                // Workaround erroneous numeric interpretation of +\"0x\"\n                return high !== high || escapedWhitespace ?\n                    escaped :\n                    high < 0 ?\n                        // BMP codepoint\n                        String.fromCharCode(high + 0x10000) :\n                        // Supplemental Plane codepoint (surrogate pair)\n                        String.fromCharCode(high >> 10 | 0xD800, high & 0x3FF | 0xDC00);\n            },\n\n            // CSS string/identifier serialization\n            // https://drafts.csswg.org/cssom/#common-serializing-idioms\n            // eslint-disable-next-line no-control-regex\n            rcssescape = /([\\0-\\x1f\\x7f]|^-?\\d)|^-$|[^\\0-\\x1f\\x7f-\\uFFFF\\w-]/g,\n            fcssescape = function (ch, asCodePoint) {\n                if (asCodePoint) {\n\n                    // U+0000 NULL becomes U+FFFD REPLACEMENT CHARACTER\n                    if (ch === \"\\0\") {\n                        return \"\\uFFFD\";\n                    }\n\n                    // Control characters and (dependent upon position) numbers get escaped as code points\n                    return ch.slice(0, -1) + \"\\\\\" + ch.charCodeAt(ch.length - 1).toString(16) + \" \";\n                }\n\n                // Other potentially-special ASCII characters get backslash-escaped\n                return \"\\\\\" + ch;\n            },\n\n            // Used for iframes\n            // See setDocument()\n            // Removing the function wrapper causes a \"Permission Denied\"\n            // error in IE\n            unloadHandler = function () {\n                setDocument();\n            },\n\n            disabledAncestor = addCombinator(\n                function (elem) {\n                    return elem.disabled === true && (\"form\" in elem || \"label\" in elem);\n                },\n                {dir: \"parentNode\", next: \"legend\"}\n            );\n\n// Optimize for push.apply( _, NodeList )\n        try {\n            push.apply(\n                (arr = slice.call(preferredDoc.childNodes)),\n                preferredDoc.childNodes\n            );\n            // Support: Android<4.0\n            // Detect silently failing push.apply\n            arr[preferredDoc.childNodes.length].nodeType;\n        } catch (e) {\n            push = {\n                apply: arr.length ?\n\n                    // Leverage slice if possible\n                    function (target, els) {\n                        push_native.apply(target, slice.call(els));\n                    } :\n\n                    // Support: IE<9\n                    // Otherwise append directly\n                    function (target, els) {\n                        var j = target.length,\n                            i = 0;\n                        // Can't trust NodeList.length\n                        while ((target[j++] = els[i++])) {\n                        }\n                        target.length = j - 1;\n                    }\n            };\n        }\n\n        function Sizzle(selector, context, results, seed) {\n            var m, i, elem, nid, match, groups, newSelector,\n                newContext = context && context.ownerDocument,\n\n                // nodeType defaults to 9, since context defaults to document\n                nodeType = context ? context.nodeType : 9;\n\n            results = results || [];\n\n            // Return early from calls with invalid selector or context\n            if (typeof selector !== \"string\" || !selector ||\n                nodeType !== 1 && nodeType !== 9 && nodeType !== 11) {\n\n                return results;\n            }\n\n            // Try to shortcut find operations (as opposed to filters) in HTML documents\n            if (!seed) {\n\n                if ((context ? context.ownerDocument || context : preferredDoc) !== document) {\n                    setDocument(context);\n                }\n                context = context || document;\n\n                if (documentIsHTML) {\n\n                    // If the selector is sufficiently simple, try using a \"get*By*\" DOM method\n                    // (excepting DocumentFragment context, where the methods don't exist)\n                    if (nodeType !== 11 && (match = rquickExpr.exec(selector))) {\n\n                        // ID selector\n                        if ((m = match[1])) {\n\n                            // Document context\n                            if (nodeType === 9) {\n                                if ((elem = context.getElementById(m))) {\n\n                                    // Support: IE, Opera, Webkit\n                                    // TODO: identify versions\n                                    // getElementById can match elements by name instead of ID\n                                    if (elem.id === m) {\n                                        results.push(elem);\n                                        return results;\n                                    }\n                                } else {\n                                    return results;\n                                }\n\n                                // Element context\n                            } else {\n\n                                // Support: IE, Opera, Webkit\n                                // TODO: identify versions\n                                // getElementById can match elements by name instead of ID\n                                if (newContext && (elem = newContext.getElementById(m)) &&\n                                    contains(context, elem) &&\n                                    elem.id === m) {\n\n                                    results.push(elem);\n                                    return results;\n                                }\n                            }\n\n                            // Type selector\n                        } else if (match[2]) {\n                            push.apply(results, context.getElementsByTagName(selector));\n                            return results;\n\n                            // Class selector\n                        } else if ((m = match[3]) && support.getElementsByClassName &&\n                            context.getElementsByClassName) {\n\n                            push.apply(results, context.getElementsByClassName(m));\n                            return results;\n                        }\n                    }\n\n                    // Take advantage of querySelectorAll\n                    if (support.qsa &&\n                        !compilerCache[selector + \" \"] &&\n                        (!rbuggyQSA || !rbuggyQSA.test(selector))) {\n\n                        if (nodeType !== 1) {\n                            newContext = context;\n                            newSelector = selector;\n\n                            // qSA looks outside Element context, which is not what we want\n                            // Thanks to Andrew Dupont for this workaround technique\n                            // Support: IE <=8\n                            // Exclude object elements\n                        } else if (context.nodeName.toLowerCase() !== \"object\") {\n\n                            // Capture the context ID, setting it first if necessary\n                            if ((nid = context.getAttribute(\"id\"))) {\n                                nid = nid.replace(rcssescape, fcssescape);\n                            } else {\n                                context.setAttribute(\"id\", (nid = expando));\n                            }\n\n                            // Prefix every selector in the list\n                            groups = tokenize(selector);\n                            i = groups.length;\n                            while (i--) {\n                                groups[i] = \"#\" + nid + \" \" + toSelector(groups[i]);\n                            }\n                            newSelector = groups.join(\",\");\n\n                            // Expand context for sibling selectors\n                            newContext = rsibling.test(selector) && testContext(context.parentNode) ||\n                                context;\n                        }\n\n                        if (newSelector) {\n                            try {\n                                push.apply(results,\n                                    newContext.querySelectorAll(newSelector)\n                                );\n                                return results;\n                            } catch (qsaError) {\n                            } finally {\n                                if (nid === expando) {\n                                    context.removeAttribute(\"id\");\n                                }\n                            }\n                        }\n                    }\n                }\n            }\n\n            // All others\n            return select(selector.replace(rtrim, \"$1\"), context, results, seed);\n        }\n\n        /**\n         * Create key-value caches of limited size\n         * @returns {function(string, object)} Returns the Object data after storing it on itself with\n         *    property name the (space-suffixed) string and (if the cache is larger than Expr.cacheLength)\n         *    deleting the oldest entry\n         */\n        function createCache() {\n            var keys = [];\n\n            function cache(key, value) {\n                // Use (key + \" \") to avoid collision with native prototype properties (see Issue #157)\n                if (keys.push(key + \" \") > Expr.cacheLength) {\n                    // Only keep the most recent entries\n                    delete cache[keys.shift()];\n                }\n                return (cache[key + \" \"] = value);\n            }\n\n            return cache;\n        }\n\n        /**\n         * Mark a function for special use by Sizzle\n         * @param {Function} fn The function to mark\n         */\n        function markFunction(fn) {\n            fn[expando] = true;\n            return fn;\n        }\n\n        /**\n         * Support testing using an element\n         * @param {Function} fn Passed the created element and returns a boolean result\n         */\n        function assert(fn) {\n            var el = document.createElement(\"fieldset\");\n\n            try {\n                return !!fn(el);\n            } catch (e) {\n                return false;\n            } finally {\n                // Remove from its parent by default\n                if (el.parentNode) {\n                    el.parentNode.removeChild(el);\n                }\n                // release memory in IE\n                el = null;\n            }\n        }\n\n        /**\n         * Adds the same handler for all of the specified attrs\n         * @param {String} attrs Pipe-separated list of attributes\n         * @param {Function} handler The method that will be applied\n         */\n        function addHandle(attrs, handler) {\n            var arr = attrs.split(\"|\"),\n                i = arr.length;\n\n            while (i--) {\n                Expr.attrHandle[arr[i]] = handler;\n            }\n        }\n\n        /**\n         * Checks document order of two siblings\n         * @param {Element} a\n         * @param {Element} b\n         * @returns {Number} Returns less than 0 if a precedes b, greater than 0 if a follows b\n         */\n        function siblingCheck(a, b) {\n            var cur = b && a,\n                diff = cur && a.nodeType === 1 && b.nodeType === 1 &&\n                    a.sourceIndex - b.sourceIndex;\n\n            // Use IE sourceIndex if available on both nodes\n            if (diff) {\n                return diff;\n            }\n\n            // Check if b follows a\n            if (cur) {\n                while ((cur = cur.nextSibling)) {\n                    if (cur === b) {\n                        return -1;\n                    }\n                }\n            }\n\n            return a ? 1 : -1;\n        }\n\n        /**\n         * Returns a function to use in pseudos for input types\n         * @param {String} type\n         */\n        function createInputPseudo(type) {\n            return function (elem) {\n                var name = elem.nodeName.toLowerCase();\n                return name === \"input\" && elem.type === type;\n            };\n        }\n\n        /**\n         * Returns a function to use in pseudos for buttons\n         * @param {String} type\n         */\n        function createButtonPseudo(type) {\n            return function (elem) {\n                var name = elem.nodeName.toLowerCase();\n                return (name === \"input\" || name === \"button\") && elem.type === type;\n            };\n        }\n\n        /**\n         * Returns a function to use in pseudos for :enabled/:disabled\n         * @param {Boolean} disabled true for :disabled; false for :enabled\n         */\n        function createDisabledPseudo(disabled) {\n\n            // Known :disabled false positives: fieldset[disabled] > legend:nth-of-type(n+2) :can-disable\n            return function (elem) {\n\n                // Only certain elements can match :enabled or :disabled\n                // https://html.spec.whatwg.org/multipage/scripting.html#selector-enabled\n                // https://html.spec.whatwg.org/multipage/scripting.html#selector-disabled\n                if (\"form\" in elem) {\n\n                    // Check for inherited disabledness on relevant non-disabled elements:\n                    // * listed form-associated elements in a disabled fieldset\n                    //   https://html.spec.whatwg.org/multipage/forms.html#category-listed\n                    //   https://html.spec.whatwg.org/multipage/forms.html#concept-fe-disabled\n                    // * option elements in a disabled optgroup\n                    //   https://html.spec.whatwg.org/multipage/forms.html#concept-option-disabled\n                    // All such elements have a \"form\" property.\n                    if (elem.parentNode && elem.disabled === false) {\n\n                        // Option elements defer to a parent optgroup if present\n                        if (\"label\" in elem) {\n                            if (\"label\" in elem.parentNode) {\n                                return elem.parentNode.disabled === disabled;\n                            } else {\n                                return elem.disabled === disabled;\n                            }\n                        }\n\n                        // Support: IE 6 - 11\n                        // Use the isDisabled shortcut property to check for disabled fieldset ancestors\n                        return elem.isDisabled === disabled ||\n\n                            // Where there is no isDisabled, check manually\n                            /* jshint -W018 */\n                            elem.isDisabled !== !disabled &&\n                            disabledAncestor(elem) === disabled;\n                    }\n\n                    return elem.disabled === disabled;\n\n                    // Try to winnow out elements that can't be disabled before trusting the disabled property.\n                    // Some victims get caught in our net (label, legend, menu, track), but it shouldn't\n                    // even exist on them, let alone have a boolean value.\n                } else if (\"label\" in elem) {\n                    return elem.disabled === disabled;\n                }\n\n                // Remaining elements are neither :enabled nor :disabled\n                return false;\n            };\n        }\n\n        /**\n         * Returns a function to use in pseudos for positionals\n         * @param {Function} fn\n         */\n        function createPositionalPseudo(fn) {\n            return markFunction(function (argument) {\n                argument = +argument;\n                return markFunction(function (seed, matches) {\n                    var j,\n                        matchIndexes = fn([], seed.length, argument),\n                        i = matchIndexes.length;\n\n                    // Match elements found at the specified indexes\n                    while (i--) {\n                        if (seed[(j = matchIndexes[i])]) {\n                            seed[j] = !(matches[j] = seed[j]);\n                        }\n                    }\n                });\n            });\n        }\n\n        /**\n         * Checks a node for validity as a Sizzle context\n         * @param {Element|Object=} context\n         * @returns {Element|Object|Boolean} The input node if acceptable, otherwise a falsy value\n         */\n        function testContext(context) {\n            return context && typeof context.getElementsByTagName !== \"undefined\" && context;\n        }\n\n// Expose support vars for convenience\n        support = Sizzle.support = {};\n\n        /**\n         * Detects XML nodes\n         * @param {Element|Object} elem An element or a document\n         * @returns {Boolean} True iff elem is a non-HTML XML node\n         */\n        isXML = Sizzle.isXML = function (elem) {\n            // documentElement is verified for cases where it doesn't yet exist\n            // (such as loading iframes in IE - #4833)\n            var documentElement = elem && (elem.ownerDocument || elem).documentElement;\n            return documentElement ? documentElement.nodeName !== \"HTML\" : false;\n        };\n\n        /**\n         * Sets document-related variables once based on the current document\n         * @param {Element|Object} [doc] An element or document object to use to set the document\n         * @returns {Object} Returns the current document\n         */\n        setDocument = Sizzle.setDocument = function (node) {\n            var hasCompare, subWindow,\n                doc = node ? node.ownerDocument || node : preferredDoc;\n\n            // Return early if doc is invalid or already selected\n            if (doc === document || doc.nodeType !== 9 || !doc.documentElement) {\n                return document;\n            }\n\n            // Update global variables\n            document = doc;\n            docElem = document.documentElement;\n            documentIsHTML = !isXML(document);\n\n            // Support: IE 9-11, Edge\n            // Accessing iframe documents after unload throws \"permission denied\" errors (jQuery #13936)\n            if (preferredDoc !== document &&\n                (subWindow = document.defaultView) && subWindow.top !== subWindow) {\n\n                // Support: IE 11, Edge\n                if (subWindow.addEventListener) {\n                    subWindow.addEventListener(\"unload\", unloadHandler, false);\n\n                    // Support: IE 9 - 10 only\n                } else if (subWindow.attachEvent) {\n                    subWindow.attachEvent(\"onunload\", unloadHandler);\n                }\n            }\n\n            /* Attributes\n\t---------------------------------------------------------------------- */\n\n            // Support: IE<8\n            // Verify that getAttribute really returns attributes and not properties\n            // (excepting IE8 booleans)\n            support.attributes = assert(function (el) {\n                el.className = \"i\";\n                return !el.getAttribute(\"className\");\n            });\n\n            /* getElement(s)By*\n\t---------------------------------------------------------------------- */\n\n            // Check if getElementsByTagName(\"*\") returns only elements\n            support.getElementsByTagName = assert(function (el) {\n                el.appendChild(document.createComment(\"\"));\n                return !el.getElementsByTagName(\"*\").length;\n            });\n\n            // Support: IE<9\n            support.getElementsByClassName = rnative.test(document.getElementsByClassName);\n\n            // Support: IE<10\n            // Check if getElementById returns elements by name\n            // The broken getElementById methods don't pick up programmatically-set names,\n            // so use a roundabout getElementsByName test\n            support.getById = assert(function (el) {\n                docElem.appendChild(el).id = expando;\n                return !document.getElementsByName || !document.getElementsByName(expando).length;\n            });\n\n            // ID filter and find\n            if (support.getById) {\n                Expr.filter[\"ID\"] = function (id) {\n                    var attrId = id.replace(runescape, funescape);\n                    return function (elem) {\n                        return elem.getAttribute(\"id\") === attrId;\n                    };\n                };\n                Expr.find[\"ID\"] = function (id, context) {\n                    if (typeof context.getElementById !== \"undefined\" && documentIsHTML) {\n                        var elem = context.getElementById(id);\n                        return elem ? [elem] : [];\n                    }\n                };\n            } else {\n                Expr.filter[\"ID\"] = function (id) {\n                    var attrId = id.replace(runescape, funescape);\n                    return function (elem) {\n                        var node = typeof elem.getAttributeNode !== \"undefined\" &&\n                            elem.getAttributeNode(\"id\");\n                        return node && node.value === attrId;\n                    };\n                };\n\n                // Support: IE 6 - 7 only\n                // getElementById is not reliable as a find shortcut\n                Expr.find[\"ID\"] = function (id, context) {\n                    if (typeof context.getElementById !== \"undefined\" && documentIsHTML) {\n                        var node, i, elems,\n                            elem = context.getElementById(id);\n\n                        if (elem) {\n\n                            // Verify the id attribute\n                            node = elem.getAttributeNode(\"id\");\n                            if (node && node.value === id) {\n                                return [elem];\n                            }\n\n                            // Fall back on getElementsByName\n                            elems = context.getElementsByName(id);\n                            i = 0;\n                            while ((elem = elems[i++])) {\n                                node = elem.getAttributeNode(\"id\");\n                                if (node && node.value === id) {\n                                    return [elem];\n                                }\n                            }\n                        }\n\n                        return [];\n                    }\n                };\n            }\n\n            // Tag\n            Expr.find[\"TAG\"] = support.getElementsByTagName ?\n                function (tag, context) {\n                    if (typeof context.getElementsByTagName !== \"undefined\") {\n                        return context.getElementsByTagName(tag);\n\n                        // DocumentFragment nodes don't have gEBTN\n                    } else if (support.qsa) {\n                        return context.querySelectorAll(tag);\n                    }\n                } :\n\n                function (tag, context) {\n                    var elem,\n                        tmp = [],\n                        i = 0,\n                        // By happy coincidence, a (broken) gEBTN appears on DocumentFragment nodes too\n                        results = context.getElementsByTagName(tag);\n\n                    // Filter out possible comments\n                    if (tag === \"*\") {\n                        while ((elem = results[i++])) {\n                            if (elem.nodeType === 1) {\n                                tmp.push(elem);\n                            }\n                        }\n\n                        return tmp;\n                    }\n                    return results;\n                };\n\n            // Class\n            Expr.find[\"CLASS\"] = support.getElementsByClassName && function (className, context) {\n                if (typeof context.getElementsByClassName !== \"undefined\" && documentIsHTML) {\n                    return context.getElementsByClassName(className);\n                }\n            };\n\n            /* QSA/matchesSelector\n\t---------------------------------------------------------------------- */\n\n            // QSA and matchesSelector support\n\n            // matchesSelector(:active) reports false when true (IE9/Opera 11.5)\n            rbuggyMatches = [];\n\n            // qSa(:focus) reports false when true (Chrome 21)\n            // We allow this because of a bug in IE8/9 that throws an error\n            // whenever `document.activeElement` is accessed on an iframe\n            // So, we allow :focus to pass through QSA all the time to avoid the IE error\n            // See https://bugs.jquery.com/ticket/13378\n            rbuggyQSA = [];\n\n            if ((support.qsa = rnative.test(document.querySelectorAll))) {\n                // Build QSA regex\n                // Regex strategy adopted from Diego Perini\n                assert(function (el) {\n                    // Select is set to empty string on purpose\n                    // This is to test IE's treatment of not explicitly\n                    // setting a boolean content attribute,\n                    // since its presence should be enough\n                    // https://bugs.jquery.com/ticket/12359\n                    docElem.appendChild(el).innerHTML = \"<a id='\" + expando + \"'></a>\" +\n                        \"<select id='\" + expando + \"-\\r\\\\' msallowcapture=''>\" +\n                        \"<option selected=''></option></select>\";\n\n                    // Support: IE8, Opera 11-12.16\n                    // Nothing should be selected when empty strings follow ^= or $= or *=\n                    // The test attribute must be unknown in Opera but \"safe\" for WinRT\n                    // https://msdn.microsoft.com/en-us/library/ie/hh465388.aspx#attribute_section\n                    if (el.querySelectorAll(\"[msallowcapture^='']\").length) {\n                        rbuggyQSA.push(\"[*^$]=\" + whitespace + \"*(?:''|\\\"\\\")\");\n                    }\n\n                    // Support: IE8\n                    // Boolean attributes and \"value\" are not treated correctly\n                    if (!el.querySelectorAll(\"[selected]\").length) {\n                        rbuggyQSA.push(\"\\\\[\" + whitespace + \"*(?:value|\" + booleans + \")\");\n                    }\n\n                    // Support: Chrome<29, Android<4.4, Safari<7.0+, iOS<7.0+, PhantomJS<1.9.8+\n                    if (!el.querySelectorAll(\"[id~=\" + expando + \"-]\").length) {\n                        rbuggyQSA.push(\"~=\");\n                    }\n\n                    // Webkit/Opera - :checked should return selected option elements\n                    // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked\n                    // IE8 throws error here and will not see later tests\n                    if (!el.querySelectorAll(\":checked\").length) {\n                        rbuggyQSA.push(\":checked\");\n                    }\n\n                    // Support: Safari 8+, iOS 8+\n                    // https://bugs.webkit.org/show_bug.cgi?id=136851\n                    // In-page `selector#id sibling-combinator selector` fails\n                    if (!el.querySelectorAll(\"a#\" + expando + \"+*\").length) {\n                        rbuggyQSA.push(\".#.+[+~]\");\n                    }\n                });\n\n                assert(function (el) {\n                    el.innerHTML = \"<a href='' disabled='disabled'></a>\" +\n                        \"<select disabled='disabled'><option/></select>\";\n\n                    // Support: Windows 8 Native Apps\n                    // The type and name attributes are restricted during .innerHTML assignment\n                    var input = document.createElement(\"input\");\n                    input.setAttribute(\"type\", \"hidden\");\n                    el.appendChild(input).setAttribute(\"name\", \"D\");\n\n                    // Support: IE8\n                    // Enforce case-sensitivity of name attribute\n                    if (el.querySelectorAll(\"[name=d]\").length) {\n                        rbuggyQSA.push(\"name\" + whitespace + \"*[*^$|!~]?=\");\n                    }\n\n                    // FF 3.5 - :enabled/:disabled and hidden elements (hidden elements are still enabled)\n                    // IE8 throws error here and will not see later tests\n                    if (el.querySelectorAll(\":enabled\").length !== 2) {\n                        rbuggyQSA.push(\":enabled\", \":disabled\");\n                    }\n\n                    // Support: IE9-11+\n                    // IE's :disabled selector does not pick up the children of disabled fieldsets\n                    docElem.appendChild(el).disabled = true;\n                    if (el.querySelectorAll(\":disabled\").length !== 2) {\n                        rbuggyQSA.push(\":enabled\", \":disabled\");\n                    }\n\n                    // Opera 10-11 does not throw on post-comma invalid pseudos\n                    el.querySelectorAll(\"*,:x\");\n                    rbuggyQSA.push(\",.*:\");\n                });\n            }\n\n            if ((support.matchesSelector = rnative.test((matches = docElem.matches ||\n                docElem.webkitMatchesSelector ||\n                docElem.mozMatchesSelector ||\n                docElem.oMatchesSelector ||\n                docElem.msMatchesSelector)))) {\n\n                assert(function (el) {\n                    // Check to see if it's possible to do matchesSelector\n                    // on a disconnected node (IE 9)\n                    support.disconnectedMatch = matches.call(el, \"*\");\n\n                    // This should fail with an exception\n                    // Gecko does not error, returns false instead\n                    matches.call(el, \"[s!='']:x\");\n                    rbuggyMatches.push(\"!=\", pseudos);\n                });\n            }\n\n            rbuggyQSA = rbuggyQSA.length && new RegExp(rbuggyQSA.join(\"|\"));\n            rbuggyMatches = rbuggyMatches.length && new RegExp(rbuggyMatches.join(\"|\"));\n\n            /* Contains\n\t---------------------------------------------------------------------- */\n            hasCompare = rnative.test(docElem.compareDocumentPosition);\n\n            // Element contains another\n            // Purposefully self-exclusive\n            // As in, an element does not contain itself\n            contains = hasCompare || rnative.test(docElem.contains) ?\n                function (a, b) {\n                    var adown = a.nodeType === 9 ? a.documentElement : a,\n                        bup = b && b.parentNode;\n                    return a === bup || !!(bup && bup.nodeType === 1 && (\n                        adown.contains ?\n                            adown.contains(bup) :\n                            a.compareDocumentPosition && a.compareDocumentPosition(bup) & 16\n                    ));\n                } :\n                function (a, b) {\n                    if (b) {\n                        while ((b = b.parentNode)) {\n                            if (b === a) {\n                                return true;\n                            }\n                        }\n                    }\n                    return false;\n                };\n\n            /* Sorting\n\t---------------------------------------------------------------------- */\n\n            // Document order sorting\n            sortOrder = hasCompare ?\n                function (a, b) {\n\n                    // Flag for duplicate removal\n                    if (a === b) {\n                        hasDuplicate = true;\n                        return 0;\n                    }\n\n                    // Sort on method existence if only one input has compareDocumentPosition\n                    var compare = !a.compareDocumentPosition - !b.compareDocumentPosition;\n                    if (compare) {\n                        return compare;\n                    }\n\n                    // Calculate position if both inputs belong to the same document\n                    compare = (a.ownerDocument || a) === (b.ownerDocument || b) ?\n                        a.compareDocumentPosition(b) :\n\n                        // Otherwise we know they are disconnected\n                        1;\n\n                    // Disconnected nodes\n                    if (compare & 1 ||\n                        (!support.sortDetached && b.compareDocumentPosition(a) === compare)) {\n\n                        // Choose the first element that is related to our preferred document\n                        if (a === document || a.ownerDocument === preferredDoc && contains(preferredDoc, a)) {\n                            return -1;\n                        }\n                        if (b === document || b.ownerDocument === preferredDoc && contains(preferredDoc, b)) {\n                            return 1;\n                        }\n\n                        // Maintain original order\n                        return sortInput ?\n                            (indexOf(sortInput, a) - indexOf(sortInput, b)) :\n                            0;\n                    }\n\n                    return compare & 4 ? -1 : 1;\n                } :\n                function (a, b) {\n                    // Exit early if the nodes are identical\n                    if (a === b) {\n                        hasDuplicate = true;\n                        return 0;\n                    }\n\n                    var cur,\n                        i = 0,\n                        aup = a.parentNode,\n                        bup = b.parentNode,\n                        ap = [a],\n                        bp = [b];\n\n                    // Parentless nodes are either documents or disconnected\n                    if (!aup || !bup) {\n                        return a === document ? -1 :\n                            b === document ? 1 :\n                                aup ? -1 :\n                                    bup ? 1 :\n                                        sortInput ?\n                                            (indexOf(sortInput, a) - indexOf(sortInput, b)) :\n                                            0;\n\n                        // If the nodes are siblings, we can do a quick check\n                    } else if (aup === bup) {\n                        return siblingCheck(a, b);\n                    }\n\n                    // Otherwise we need full lists of their ancestors for comparison\n                    cur = a;\n                    while ((cur = cur.parentNode)) {\n                        ap.unshift(cur);\n                    }\n                    cur = b;\n                    while ((cur = cur.parentNode)) {\n                        bp.unshift(cur);\n                    }\n\n                    // Walk down the tree looking for a discrepancy\n                    while (ap[i] === bp[i]) {\n                        i++;\n                    }\n\n                    return i ?\n                        // Do a sibling check if the nodes have a common ancestor\n                        siblingCheck(ap[i], bp[i]) :\n\n                        // Otherwise nodes in our document sort first\n                        ap[i] === preferredDoc ? -1 :\n                            bp[i] === preferredDoc ? 1 :\n                                0;\n                };\n\n            return document;\n        };\n\n        Sizzle.matches = function (expr, elements) {\n            return Sizzle(expr, null, null, elements);\n        };\n\n        Sizzle.matchesSelector = function (elem, expr) {\n            // Set document vars if needed\n            if ((elem.ownerDocument || elem) !== document) {\n                setDocument(elem);\n            }\n\n            // Make sure that attribute selectors are quoted\n            expr = expr.replace(rattributeQuotes, \"='$1']\");\n\n            if (support.matchesSelector && documentIsHTML &&\n                !compilerCache[expr + \" \"] &&\n                (!rbuggyMatches || !rbuggyMatches.test(expr)) &&\n                (!rbuggyQSA || !rbuggyQSA.test(expr))) {\n\n                try {\n                    var ret = matches.call(elem, expr);\n\n                    // IE 9's matchesSelector returns false on disconnected nodes\n                    if (ret || support.disconnectedMatch ||\n                        // As well, disconnected nodes are said to be in a document\n                        // fragment in IE 9\n                        elem.document && elem.document.nodeType !== 11) {\n                        return ret;\n                    }\n                } catch (e) {\n                }\n            }\n\n            return Sizzle(expr, document, null, [elem]).length > 0;\n        };\n\n        Sizzle.contains = function (context, elem) {\n            // Set document vars if needed\n            if ((context.ownerDocument || context) !== document) {\n                setDocument(context);\n            }\n            return contains(context, elem);\n        };\n\n        Sizzle.attr = function (elem, name) {\n            // Set document vars if needed\n            if ((elem.ownerDocument || elem) !== document) {\n                setDocument(elem);\n            }\n\n            var fn = Expr.attrHandle[name.toLowerCase()],\n                // Don't get fooled by Object.prototype properties (jQuery #13807)\n                val = fn && hasOwn.call(Expr.attrHandle, name.toLowerCase()) ?\n                    fn(elem, name, !documentIsHTML) :\n                    undefined;\n\n            return val !== undefined ?\n                val :\n                support.attributes || !documentIsHTML ?\n                    elem.getAttribute(name) :\n                    (val = elem.getAttributeNode(name)) && val.specified ?\n                        val.value :\n                        null;\n        };\n\n        Sizzle.escape = function (sel) {\n            return (sel + \"\").replace(rcssescape, fcssescape);\n        };\n\n        Sizzle.error = function (msg) {\n            throw new Error(\"Syntax error, unrecognized expression: \" + msg);\n        };\n\n        /**\n         * Document sorting and removing duplicates\n         * @param {ArrayLike} results\n         */\n        Sizzle.uniqueSort = function (results) {\n            var elem,\n                duplicates = [],\n                j = 0,\n                i = 0;\n\n            // Unless we *know* we can detect duplicates, assume their presence\n            hasDuplicate = !support.detectDuplicates;\n            sortInput = !support.sortStable && results.slice(0);\n            results.sort(sortOrder);\n\n            if (hasDuplicate) {\n                while ((elem = results[i++])) {\n                    if (elem === results[i]) {\n                        j = duplicates.push(i);\n                    }\n                }\n                while (j--) {\n                    results.splice(duplicates[j], 1);\n                }\n            }\n\n            // Clear input after sorting to release objects\n            // See https://github.com/jquery/sizzle/pull/225\n            sortInput = null;\n\n            return results;\n        };\n\n        /**\n         * Utility function for retrieving the text value of an array of DOM nodes\n         * @param {Array|Element} elem\n         */\n        getText = Sizzle.getText = function (elem) {\n            var node,\n                ret = \"\",\n                i = 0,\n                nodeType = elem.nodeType;\n\n            if (!nodeType) {\n                // If no nodeType, this is expected to be an array\n                while ((node = elem[i++])) {\n                    // Do not traverse comment nodes\n                    ret += getText(node);\n                }\n            } else if (nodeType === 1 || nodeType === 9 || nodeType === 11) {\n                // Use textContent for elements\n                // innerText usage removed for consistency of new lines (jQuery #11153)\n                if (typeof elem.textContent === \"string\") {\n                    return elem.textContent;\n                } else {\n                    // Traverse its children\n                    for (elem = elem.firstChild; elem; elem = elem.nextSibling) {\n                        ret += getText(elem);\n                    }\n                }\n            } else if (nodeType === 3 || nodeType === 4) {\n                return elem.nodeValue;\n            }\n            // Do not include comment or processing instruction nodes\n\n            return ret;\n        };\n\n        Expr = Sizzle.selectors = {\n\n            // Can be adjusted by the user\n            cacheLength: 50,\n\n            createPseudo: markFunction,\n\n            match: matchExpr,\n\n            attrHandle: {},\n\n            find: {},\n\n            relative: {\n                \">\": {dir: \"parentNode\", first: true},\n                \" \": {dir: \"parentNode\"},\n                \"+\": {dir: \"previousSibling\", first: true},\n                \"~\": {dir: \"previousSibling\"}\n            },\n\n            preFilter: {\n                \"ATTR\": function (match) {\n                    match[1] = match[1].replace(runescape, funescape);\n\n                    // Move the given value to match[3] whether quoted or unquoted\n                    match[3] = (match[3] || match[4] || match[5] || \"\").replace(runescape, funescape);\n\n                    if (match[2] === \"~=\") {\n                        match[3] = \" \" + match[3] + \" \";\n                    }\n\n                    return match.slice(0, 4);\n                },\n\n                \"CHILD\": function (match) {\n                    /* matches from matchExpr[\"CHILD\"]\n\t\t\t\t1 type (only|nth|...)\n\t\t\t\t2 what (child|of-type)\n\t\t\t\t3 argument (even|odd|\\d*|\\d*n([+-]\\d+)?|...)\n\t\t\t\t4 xn-component of xn+y argument ([+-]?\\d*n|)\n\t\t\t\t5 sign of xn-component\n\t\t\t\t6 x of xn-component\n\t\t\t\t7 sign of y-component\n\t\t\t\t8 y of y-component\n\t\t\t*/\n                    match[1] = match[1].toLowerCase();\n\n                    if (match[1].slice(0, 3) === \"nth\") {\n                        // nth-* requires argument\n                        if (!match[3]) {\n                            Sizzle.error(match[0]);\n                        }\n\n                        // numeric x and y parameters for Expr.filter.CHILD\n                        // remember that false/true cast respectively to 0/1\n                        match[4] = +(match[4] ? match[5] + (match[6] || 1) : 2 * (match[3] === \"even\" || match[3] === \"odd\"));\n                        match[5] = +((match[7] + match[8]) || match[3] === \"odd\");\n\n                        // other types prohibit arguments\n                    } else if (match[3]) {\n                        Sizzle.error(match[0]);\n                    }\n\n                    return match;\n                },\n\n                \"PSEUDO\": function (match) {\n                    var excess,\n                        unquoted = !match[6] && match[2];\n\n                    if (matchExpr[\"CHILD\"].test(match[0])) {\n                        return null;\n                    }\n\n                    // Accept quoted arguments as-is\n                    if (match[3]) {\n                        match[2] = match[4] || match[5] || \"\";\n\n                        // Strip excess characters from unquoted arguments\n                    } else if (unquoted && rpseudo.test(unquoted) &&\n                        // Get excess from tokenize (recursively)\n                        (excess = tokenize(unquoted, true)) &&\n                        // advance to the next closing parenthesis\n                        (excess = unquoted.indexOf(\")\", unquoted.length - excess) - unquoted.length)) {\n\n                        // excess is a negative index\n                        match[0] = match[0].slice(0, excess);\n                        match[2] = unquoted.slice(0, excess);\n                    }\n\n                    // Return only captures needed by the pseudo filter method (type and argument)\n                    return match.slice(0, 3);\n                }\n            },\n\n            filter: {\n\n                \"TAG\": function (nodeNameSelector) {\n                    var nodeName = nodeNameSelector.replace(runescape, funescape).toLowerCase();\n                    return nodeNameSelector === \"*\" ?\n                        function () {\n                            return true;\n                        } :\n                        function (elem) {\n                            return elem.nodeName && elem.nodeName.toLowerCase() === nodeName;\n                        };\n                },\n\n                \"CLASS\": function (className) {\n                    var pattern = classCache[className + \" \"];\n\n                    return pattern ||\n                        (pattern = new RegExp(\"(^|\" + whitespace + \")\" + className + \"(\" + whitespace + \"|$)\")) &&\n                        classCache(className, function (elem) {\n                            return pattern.test(typeof elem.className === \"string\" && elem.className || typeof elem.getAttribute !== \"undefined\" && elem.getAttribute(\"class\") || \"\");\n                        });\n                },\n\n                \"ATTR\": function (name, operator, check) {\n                    return function (elem) {\n                        var result = Sizzle.attr(elem, name);\n\n                        if (result == null) {\n                            return operator === \"!=\";\n                        }\n                        if (!operator) {\n                            return true;\n                        }\n\n                        result += \"\";\n\n                        return operator === \"=\" ? result === check :\n                            operator === \"!=\" ? result !== check :\n                                operator === \"^=\" ? check && result.indexOf(check) === 0 :\n                                    operator === \"*=\" ? check && result.indexOf(check) > -1 :\n                                        operator === \"$=\" ? check && result.slice(-check.length) === check :\n                                            operator === \"~=\" ? (\" \" + result.replace(rwhitespace, \" \") + \" \").indexOf(check) > -1 :\n                                                operator === \"|=\" ? result === check || result.slice(0, check.length + 1) === check + \"-\" :\n                                                    false;\n                    };\n                },\n\n                \"CHILD\": function (type, what, argument, first, last) {\n                    var simple = type.slice(0, 3) !== \"nth\",\n                        forward = type.slice(-4) !== \"last\",\n                        ofType = what === \"of-type\";\n\n                    return first === 1 && last === 0 ?\n\n                        // Shortcut for :nth-*(n)\n                        function (elem) {\n                            return !!elem.parentNode;\n                        } :\n\n                        function (elem, context, xml) {\n                            var cache, uniqueCache, outerCache, node, nodeIndex, start,\n                                dir = simple !== forward ? \"nextSibling\" : \"previousSibling\",\n                                parent = elem.parentNode,\n                                name = ofType && elem.nodeName.toLowerCase(),\n                                useCache = !xml && !ofType,\n                                diff = false;\n\n                            if (parent) {\n\n                                // :(first|last|only)-(child|of-type)\n                                if (simple) {\n                                    while (dir) {\n                                        node = elem;\n                                        while ((node = node[dir])) {\n                                            if (ofType ?\n                                                node.nodeName.toLowerCase() === name :\n                                                node.nodeType === 1) {\n\n                                                return false;\n                                            }\n                                        }\n                                        // Reverse direction for :only-* (if we haven't yet done so)\n                                        start = dir = type === \"only\" && !start && \"nextSibling\";\n                                    }\n                                    return true;\n                                }\n\n                                start = [forward ? parent.firstChild : parent.lastChild];\n\n                                // non-xml :nth-child(...) stores cache data on `parent`\n                                if (forward && useCache) {\n\n                                    // Seek `elem` from a previously-cached index\n\n                                    // ...in a gzip-friendly way\n                                    node = parent;\n                                    outerCache = node[expando] || (node[expando] = {});\n\n                                    // Support: IE <9 only\n                                    // Defend against cloned attroperties (jQuery gh-1709)\n                                    uniqueCache = outerCache[node.uniqueID] ||\n                                        (outerCache[node.uniqueID] = {});\n\n                                    cache = uniqueCache[type] || [];\n                                    nodeIndex = cache[0] === dirruns && cache[1];\n                                    diff = nodeIndex && cache[2];\n                                    node = nodeIndex && parent.childNodes[nodeIndex];\n\n                                    while ((node = ++nodeIndex && node && node[dir] ||\n\n                                        // Fallback to seeking `elem` from the start\n                                        (diff = nodeIndex = 0) || start.pop())) {\n\n                                        // When found, cache indexes on `parent` and break\n                                        if (node.nodeType === 1 && ++diff && node === elem) {\n                                            uniqueCache[type] = [dirruns, nodeIndex, diff];\n                                            break;\n                                        }\n                                    }\n\n                                } else {\n                                    // Use previously-cached element index if available\n                                    if (useCache) {\n                                        // ...in a gzip-friendly way\n                                        node = elem;\n                                        outerCache = node[expando] || (node[expando] = {});\n\n                                        // Support: IE <9 only\n                                        // Defend against cloned attroperties (jQuery gh-1709)\n                                        uniqueCache = outerCache[node.uniqueID] ||\n                                            (outerCache[node.uniqueID] = {});\n\n                                        cache = uniqueCache[type] || [];\n                                        nodeIndex = cache[0] === dirruns && cache[1];\n                                        diff = nodeIndex;\n                                    }\n\n                                    // xml :nth-child(...)\n                                    // or :nth-last-child(...) or :nth(-last)?-of-type(...)\n                                    if (diff === false) {\n                                        // Use the same loop as above to seek `elem` from the start\n                                        while ((node = ++nodeIndex && node && node[dir] ||\n                                            (diff = nodeIndex = 0) || start.pop())) {\n\n                                            if ((ofType ?\n                                                node.nodeName.toLowerCase() === name :\n                                                node.nodeType === 1) &&\n                                                ++diff) {\n\n                                                // Cache the index of each encountered element\n                                                if (useCache) {\n                                                    outerCache = node[expando] || (node[expando] = {});\n\n                                                    // Support: IE <9 only\n                                                    // Defend against cloned attroperties (jQuery gh-1709)\n                                                    uniqueCache = outerCache[node.uniqueID] ||\n                                                        (outerCache[node.uniqueID] = {});\n\n                                                    uniqueCache[type] = [dirruns, diff];\n                                                }\n\n                                                if (node === elem) {\n                                                    break;\n                                                }\n                                            }\n                                        }\n                                    }\n                                }\n\n                                // Incorporate the offset, then check against cycle size\n                                diff -= last;\n                                return diff === first || (diff % first === 0 && diff / first >= 0);\n                            }\n                        };\n                },\n\n                \"PSEUDO\": function (pseudo, argument) {\n                    // pseudo-class names are case-insensitive\n                    // http://www.w3.org/TR/selectors/#pseudo-classes\n                    // Prioritize by case sensitivity in case custom pseudos are added with uppercase letters\n                    // Remember that setFilters inherits from pseudos\n                    var args,\n                        fn = Expr.pseudos[pseudo] || Expr.setFilters[pseudo.toLowerCase()] ||\n                            Sizzle.error(\"unsupported pseudo: \" + pseudo);\n\n                    // The user may use createPseudo to indicate that\n                    // arguments are needed to create the filter function\n                    // just as Sizzle does\n                    if (fn[expando]) {\n                        return fn(argument);\n                    }\n\n                    // But maintain support for old signatures\n                    if (fn.length > 1) {\n                        args = [pseudo, pseudo, \"\", argument];\n                        return Expr.setFilters.hasOwnProperty(pseudo.toLowerCase()) ?\n                            markFunction(function (seed, matches) {\n                                var idx,\n                                    matched = fn(seed, argument),\n                                    i = matched.length;\n                                while (i--) {\n                                    idx = indexOf(seed, matched[i]);\n                                    seed[idx] = !(matches[idx] = matched[i]);\n                                }\n                            }) :\n                            function (elem) {\n                                return fn(elem, 0, args);\n                            };\n                    }\n\n                    return fn;\n                }\n            },\n\n            pseudos: {\n                // Potentially complex pseudos\n                \"not\": markFunction(function (selector) {\n                    // Trim the selector passed to compile\n                    // to avoid treating leading and trailing\n                    // spaces as combinators\n                    var input = [],\n                        results = [],\n                        matcher = compile(selector.replace(rtrim, \"$1\"));\n\n                    return matcher[expando] ?\n                        markFunction(function (seed, matches, context, xml) {\n                            var elem,\n                                unmatched = matcher(seed, null, xml, []),\n                                i = seed.length;\n\n                            // Match elements unmatched by `matcher`\n                            while (i--) {\n                                if ((elem = unmatched[i])) {\n                                    seed[i] = !(matches[i] = elem);\n                                }\n                            }\n                        }) :\n                        function (elem, context, xml) {\n                            input[0] = elem;\n                            matcher(input, null, xml, results);\n                            // Don't keep the element (issue #299)\n                            input[0] = null;\n                            return !results.pop();\n                        };\n                }),\n\n                \"has\": markFunction(function (selector) {\n                    return function (elem) {\n                        return Sizzle(selector, elem).length > 0;\n                    };\n                }),\n\n                \"contains\": markFunction(function (text) {\n                    text = text.replace(runescape, funescape);\n                    return function (elem) {\n                        return (elem.textContent || elem.innerText || getText(elem)).indexOf(text) > -1;\n                    };\n                }),\n\n                // \"Whether an element is represented by a :lang() selector\n                // is based solely on the element's language value\n                // being equal to the identifier C,\n                // or beginning with the identifier C immediately followed by \"-\".\n                // The matching of C against the element's language value is performed case-insensitively.\n                // The identifier C does not have to be a valid language name.\"\n                // http://www.w3.org/TR/selectors/#lang-pseudo\n                \"lang\": markFunction(function (lang) {\n                    // lang value must be a valid identifier\n                    if (!ridentifier.test(lang || \"\")) {\n                        Sizzle.error(\"unsupported lang: \" + lang);\n                    }\n                    lang = lang.replace(runescape, funescape).toLowerCase();\n                    return function (elem) {\n                        var elemLang;\n                        do {\n                            if ((elemLang = documentIsHTML ?\n                                elem.lang :\n                                elem.getAttribute(\"xml:lang\") || elem.getAttribute(\"lang\"))) {\n\n                                elemLang = elemLang.toLowerCase();\n                                return elemLang === lang || elemLang.indexOf(lang + \"-\") === 0;\n                            }\n                        } while ((elem = elem.parentNode) && elem.nodeType === 1);\n                        return false;\n                    };\n                }),\n\n                // Miscellaneous\n                \"target\": function (elem) {\n                    var hash = window.location && window.location.hash;\n                    return hash && hash.slice(1) === elem.id;\n                },\n\n                \"root\": function (elem) {\n                    return elem === docElem;\n                },\n\n                \"focus\": function (elem) {\n                    return elem === document.activeElement && (!document.hasFocus || document.hasFocus()) && !!(elem.type || elem.href || ~elem.tabIndex);\n                },\n\n                // Boolean properties\n                \"enabled\": createDisabledPseudo(false),\n                \"disabled\": createDisabledPseudo(true),\n\n                \"checked\": function (elem) {\n                    // In CSS3, :checked should return both checked and selected elements\n                    // http://www.w3.org/TR/2011/REC-css3-selectors-20110929/#checked\n                    var nodeName = elem.nodeName.toLowerCase();\n                    return (nodeName === \"input\" && !!elem.checked) || (nodeName === \"option\" && !!elem.selected);\n                },\n\n                \"selected\": function (elem) {\n                    // Accessing this property makes selected-by-default\n                    // options in Safari work properly\n                    if (elem.parentNode) {\n                        elem.parentNode.selectedIndex;\n                    }\n\n                    return elem.selected === true;\n                },\n\n                // Contents\n                \"empty\": function (elem) {\n                    // http://www.w3.org/TR/selectors/#empty-pseudo\n                    // :empty is negated by element (1) or content nodes (text: 3; cdata: 4; entity ref: 5),\n                    //   but not by others (comment: 8; processing instruction: 7; etc.)\n                    // nodeType < 6 works because attributes (2) do not appear as children\n                    for (elem = elem.firstChild; elem; elem = elem.nextSibling) {\n                        if (elem.nodeType < 6) {\n                            return false;\n                        }\n                    }\n                    return true;\n                },\n\n                \"parent\": function (elem) {\n                    return !Expr.pseudos[\"empty\"](elem);\n                },\n\n                // Element/input types\n                \"header\": function (elem) {\n                    return rheader.test(elem.nodeName);\n                },\n\n                \"input\": function (elem) {\n                    return rinputs.test(elem.nodeName);\n                },\n\n                \"button\": function (elem) {\n                    var name = elem.nodeName.toLowerCase();\n                    return name === \"input\" && elem.type === \"button\" || name === \"button\";\n                },\n\n                \"text\": function (elem) {\n                    var attr;\n                    return elem.nodeName.toLowerCase() === \"input\" &&\n                        elem.type === \"text\" &&\n\n                        // Support: IE<8\n                        // New HTML5 attribute values (e.g., \"search\") appear with elem.type === \"text\"\n                        ((attr = elem.getAttribute(\"type\")) == null || attr.toLowerCase() === \"text\");\n                },\n\n                // Position-in-collection\n                \"first\": createPositionalPseudo(function () {\n                    return [0];\n                }),\n\n                \"last\": createPositionalPseudo(function (matchIndexes, length) {\n                    return [length - 1];\n                }),\n\n                \"eq\": createPositionalPseudo(function (matchIndexes, length, argument) {\n                    return [argument < 0 ? argument + length : argument];\n                }),\n\n                \"even\": createPositionalPseudo(function (matchIndexes, length) {\n                    var i = 0;\n                    for (; i < length; i += 2) {\n                        matchIndexes.push(i);\n                    }\n                    return matchIndexes;\n                }),\n\n                \"odd\": createPositionalPseudo(function (matchIndexes, length) {\n                    var i = 1;\n                    for (; i < length; i += 2) {\n                        matchIndexes.push(i);\n                    }\n                    return matchIndexes;\n                }),\n\n                \"lt\": createPositionalPseudo(function (matchIndexes, length, argument) {\n                    var i = argument < 0 ? argument + length : argument;\n                    for (; --i >= 0;) {\n                        matchIndexes.push(i);\n                    }\n                    return matchIndexes;\n                }),\n\n                \"gt\": createPositionalPseudo(function (matchIndexes, length, argument) {\n                    var i = argument < 0 ? argument + length : argument;\n                    for (; ++i < length;) {\n                        matchIndexes.push(i);\n                    }\n                    return matchIndexes;\n                })\n            }\n        };\n\n        Expr.pseudos[\"nth\"] = Expr.pseudos[\"eq\"];\n\n// Add button/input type pseudos\n        for (i in {radio: true, checkbox: true, file: true, password: true, image: true}) {\n            Expr.pseudos[i] = createInputPseudo(i);\n        }\n        for (i in {submit: true, reset: true}) {\n            Expr.pseudos[i] = createButtonPseudo(i);\n        }\n\n// Easy API for creating new setFilters\n        function setFilters() {\n        }\n\n        setFilters.prototype = Expr.filters = Expr.pseudos;\n        Expr.setFilters = new setFilters();\n\n        tokenize = Sizzle.tokenize = function (selector, parseOnly) {\n            var matched, match, tokens, type,\n                soFar, groups, preFilters,\n                cached = tokenCache[selector + \" \"];\n\n            if (cached) {\n                return parseOnly ? 0 : cached.slice(0);\n            }\n\n            soFar = selector;\n            groups = [];\n            preFilters = Expr.preFilter;\n\n            while (soFar) {\n\n                // Comma and first run\n                if (!matched || (match = rcomma.exec(soFar))) {\n                    if (match) {\n                        // Don't consume trailing commas as valid\n                        soFar = soFar.slice(match[0].length) || soFar;\n                    }\n                    groups.push((tokens = []));\n                }\n\n                matched = false;\n\n                // Combinators\n                if ((match = rcombinators.exec(soFar))) {\n                    matched = match.shift();\n                    tokens.push({\n                        value: matched,\n                        // Cast descendant combinators to space\n                        type: match[0].replace(rtrim, \" \")\n                    });\n                    soFar = soFar.slice(matched.length);\n                }\n\n                // Filters\n                for (type in Expr.filter) {\n                    if ((match = matchExpr[type].exec(soFar)) && (!preFilters[type] ||\n                        (match = preFilters[type](match)))) {\n                        matched = match.shift();\n                        tokens.push({\n                            value: matched,\n                            type: type,\n                            matches: match\n                        });\n                        soFar = soFar.slice(matched.length);\n                    }\n                }\n\n                if (!matched) {\n                    break;\n                }\n            }\n\n            // Return the length of the invalid excess\n            // if we're just parsing\n            // Otherwise, throw an error or return tokens\n            return parseOnly ?\n                soFar.length :\n                soFar ?\n                    Sizzle.error(selector) :\n                    // Cache the tokens\n                    tokenCache(selector, groups).slice(0);\n        };\n\n        function toSelector(tokens) {\n            var i = 0,\n                len = tokens.length,\n                selector = \"\";\n            for (; i < len; i++) {\n                selector += tokens[i].value;\n            }\n            return selector;\n        }\n\n        function addCombinator(matcher, combinator, base) {\n            var dir = combinator.dir,\n                skip = combinator.next,\n                key = skip || dir,\n                checkNonElements = base && key === \"parentNode\",\n                doneName = done++;\n\n            return combinator.first ?\n                // Check against closest ancestor/preceding element\n                function (elem, context, xml) {\n                    while ((elem = elem[dir])) {\n                        if (elem.nodeType === 1 || checkNonElements) {\n                            return matcher(elem, context, xml);\n                        }\n                    }\n                    return false;\n                } :\n\n                // Check against all ancestor/preceding elements\n                function (elem, context, xml) {\n                    var oldCache, uniqueCache, outerCache,\n                        newCache = [dirruns, doneName];\n\n                    // We can't set arbitrary data on XML nodes, so they don't benefit from combinator caching\n                    if (xml) {\n                        while ((elem = elem[dir])) {\n                            if (elem.nodeType === 1 || checkNonElements) {\n                                if (matcher(elem, context, xml)) {\n                                    return true;\n                                }\n                            }\n                        }\n                    } else {\n                        while ((elem = elem[dir])) {\n                            if (elem.nodeType === 1 || checkNonElements) {\n                                outerCache = elem[expando] || (elem[expando] = {});\n\n                                // Support: IE <9 only\n                                // Defend against cloned attroperties (jQuery gh-1709)\n                                uniqueCache = outerCache[elem.uniqueID] || (outerCache[elem.uniqueID] = {});\n\n                                if (skip && skip === elem.nodeName.toLowerCase()) {\n                                    elem = elem[dir] || elem;\n                                } else if ((oldCache = uniqueCache[key]) &&\n                                    oldCache[0] === dirruns && oldCache[1] === doneName) {\n\n                                    // Assign to newCache so results back-propagate to previous elements\n                                    return (newCache[2] = oldCache[2]);\n                                } else {\n                                    // Reuse newcache so results back-propagate to previous elements\n                                    uniqueCache[key] = newCache;\n\n                                    // A match means we're done; a fail means we have to keep checking\n                                    if ((newCache[2] = matcher(elem, context, xml))) {\n                                        return true;\n                                    }\n                                }\n                            }\n                        }\n                    }\n                    return false;\n                };\n        }\n\n        function elementMatcher(matchers) {\n            return matchers.length > 1 ?\n                function (elem, context, xml) {\n                    var i = matchers.length;\n                    while (i--) {\n                        if (!matchers[i](elem, context, xml)) {\n                            return false;\n                        }\n                    }\n                    return true;\n                } :\n                matchers[0];\n        }\n\n        function multipleContexts(selector, contexts, results) {\n            var i = 0,\n                len = contexts.length;\n            for (; i < len; i++) {\n                Sizzle(selector, contexts[i], results);\n            }\n            return results;\n        }\n\n        function condense(unmatched, map, filter, context, xml) {\n            var elem,\n                newUnmatched = [],\n                i = 0,\n                len = unmatched.length,\n                mapped = map != null;\n\n            for (; i < len; i++) {\n                if ((elem = unmatched[i])) {\n                    if (!filter || filter(elem, context, xml)) {\n                        newUnmatched.push(elem);\n                        if (mapped) {\n                            map.push(i);\n                        }\n                    }\n                }\n            }\n\n            return newUnmatched;\n        }\n\n        function setMatcher(preFilter, selector, matcher, postFilter, postFinder, postSelector) {\n            if (postFilter && !postFilter[expando]) {\n                postFilter = setMatcher(postFilter);\n            }\n            if (postFinder && !postFinder[expando]) {\n                postFinder = setMatcher(postFinder, postSelector);\n            }\n            return markFunction(function (seed, results, context, xml) {\n                var temp, i, elem,\n                    preMap = [],\n                    postMap = [],\n                    preexisting = results.length,\n\n                    // Get initial elements from seed or context\n                    elems = seed || multipleContexts(selector || \"*\", context.nodeType ? [context] : context, []),\n\n                    // Prefilter to get matcher input, preserving a map for seed-results synchronization\n                    matcherIn = preFilter && (seed || !selector) ?\n                        condense(elems, preMap, preFilter, context, xml) :\n                        elems,\n\n                    matcherOut = matcher ?\n                        // If we have a postFinder, or filtered seed, or non-seed postFilter or preexisting results,\n                        postFinder || (seed ? preFilter : preexisting || postFilter) ?\n\n                            // ...intermediate processing is necessary\n                            [] :\n\n                            // ...otherwise use results directly\n                            results :\n                        matcherIn;\n\n                // Find primary matches\n                if (matcher) {\n                    matcher(matcherIn, matcherOut, context, xml);\n                }\n\n                // Apply postFilter\n                if (postFilter) {\n                    temp = condense(matcherOut, postMap);\n                    postFilter(temp, [], context, xml);\n\n                    // Un-match failing elements by moving them back to matcherIn\n                    i = temp.length;\n                    while (i--) {\n                        if ((elem = temp[i])) {\n                            matcherOut[postMap[i]] = !(matcherIn[postMap[i]] = elem);\n                        }\n                    }\n                }\n\n                if (seed) {\n                    if (postFinder || preFilter) {\n                        if (postFinder) {\n                            // Get the final matcherOut by condensing this intermediate into postFinder contexts\n                            temp = [];\n                            i = matcherOut.length;\n                            while (i--) {\n                                if ((elem = matcherOut[i])) {\n                                    // Restore matcherIn since elem is not yet a final match\n                                    temp.push((matcherIn[i] = elem));\n                                }\n                            }\n                            postFinder(null, (matcherOut = []), temp, xml);\n                        }\n\n                        // Move matched elements from seed to results to keep them synchronized\n                        i = matcherOut.length;\n                        while (i--) {\n                            if ((elem = matcherOut[i]) &&\n                                (temp = postFinder ? indexOf(seed, elem) : preMap[i]) > -1) {\n\n                                seed[temp] = !(results[temp] = elem);\n                            }\n                        }\n                    }\n\n                    // Add elements to results, through postFinder if defined\n                } else {\n                    matcherOut = condense(\n                        matcherOut === results ?\n                            matcherOut.splice(preexisting, matcherOut.length) :\n                            matcherOut\n                    );\n                    if (postFinder) {\n                        postFinder(null, results, matcherOut, xml);\n                    } else {\n                        push.apply(results, matcherOut);\n                    }\n                }\n            });\n        }\n\n        function matcherFromTokens(tokens) {\n            var checkContext, matcher, j,\n                len = tokens.length,\n                leadingRelative = Expr.relative[tokens[0].type],\n                implicitRelative = leadingRelative || Expr.relative[\" \"],\n                i = leadingRelative ? 1 : 0,\n\n                // The foundational matcher ensures that elements are reachable from top-level context(s)\n                matchContext = addCombinator(function (elem) {\n                    return elem === checkContext;\n                }, implicitRelative, true),\n                matchAnyContext = addCombinator(function (elem) {\n                    return indexOf(checkContext, elem) > -1;\n                }, implicitRelative, true),\n                matchers = [function (elem, context, xml) {\n                    var ret = (!leadingRelative && (xml || context !== outermostContext)) || (\n                        (checkContext = context).nodeType ?\n                            matchContext(elem, context, xml) :\n                            matchAnyContext(elem, context, xml));\n                    // Avoid hanging onto element (issue #299)\n                    checkContext = null;\n                    return ret;\n                }];\n\n            for (; i < len; i++) {\n                if ((matcher = Expr.relative[tokens[i].type])) {\n                    matchers = [addCombinator(elementMatcher(matchers), matcher)];\n                } else {\n                    matcher = Expr.filter[tokens[i].type].apply(null, tokens[i].matches);\n\n                    // Return special upon seeing a positional matcher\n                    if (matcher[expando]) {\n                        // Find the next relative operator (if any) for proper handling\n                        j = ++i;\n                        for (; j < len; j++) {\n                            if (Expr.relative[tokens[j].type]) {\n                                break;\n                            }\n                        }\n                        return setMatcher(\n                            i > 1 && elementMatcher(matchers),\n                            i > 1 && toSelector(\n                            // If the preceding token was a descendant combinator, insert an implicit any-element `*`\n                            tokens.slice(0, i - 1).concat({value: tokens[i - 2].type === \" \" ? \"*\" : \"\"})\n                            ).replace(rtrim, \"$1\"),\n                            matcher,\n                            i < j && matcherFromTokens(tokens.slice(i, j)),\n                            j < len && matcherFromTokens((tokens = tokens.slice(j))),\n                            j < len && toSelector(tokens)\n                        );\n                    }\n                    matchers.push(matcher);\n                }\n            }\n\n            return elementMatcher(matchers);\n        }\n\n        function matcherFromGroupMatchers(elementMatchers, setMatchers) {\n            var bySet = setMatchers.length > 0,\n                byElement = elementMatchers.length > 0,\n                superMatcher = function (seed, context, xml, results, outermost) {\n                    var elem, j, matcher,\n                        matchedCount = 0,\n                        i = \"0\",\n                        unmatched = seed && [],\n                        setMatched = [],\n                        contextBackup = outermostContext,\n                        // We must always have either seed elements or outermost context\n                        elems = seed || byElement && Expr.find[\"TAG\"](\"*\", outermost),\n                        // Use integer dirruns iff this is the outermost matcher\n                        dirrunsUnique = (dirruns += contextBackup == null ? 1 : Math.random() || 0.1),\n                        len = elems.length;\n\n                    if (outermost) {\n                        outermostContext = context === document || context || outermost;\n                    }\n\n                    // Add elements passing elementMatchers directly to results\n                    // Support: IE<9, Safari\n                    // Tolerate NodeList properties (IE: \"length\"; Safari: <number>) matching elements by id\n                    for (; i !== len && (elem = elems[i]) != null; i++) {\n                        if (byElement && elem) {\n                            j = 0;\n                            if (!context && elem.ownerDocument !== document) {\n                                setDocument(elem);\n                                xml = !documentIsHTML;\n                            }\n                            while ((matcher = elementMatchers[j++])) {\n                                if (matcher(elem, context || document, xml)) {\n                                    results.push(elem);\n                                    break;\n                                }\n                            }\n                            if (outermost) {\n                                dirruns = dirrunsUnique;\n                            }\n                        }\n\n                        // Track unmatched elements for set filters\n                        if (bySet) {\n                            // They will have gone through all possible matchers\n                            if ((elem = !matcher && elem)) {\n                                matchedCount--;\n                            }\n\n                            // Lengthen the array for every element, matched or not\n                            if (seed) {\n                                unmatched.push(elem);\n                            }\n                        }\n                    }\n\n                    // `i` is now the count of elements visited above, and adding it to `matchedCount`\n                    // makes the latter nonnegative.\n                    matchedCount += i;\n\n                    // Apply set filters to unmatched elements\n                    // NOTE: This can be skipped if there are no unmatched elements (i.e., `matchedCount`\n                    // equals `i`), unless we didn't visit _any_ elements in the above loop because we have\n                    // no element matchers and no seed.\n                    // Incrementing an initially-string \"0\" `i` allows `i` to remain a string only in that\n                    // case, which will result in a \"00\" `matchedCount` that differs from `i` but is also\n                    // numerically zero.\n                    if (bySet && i !== matchedCount) {\n                        j = 0;\n                        while ((matcher = setMatchers[j++])) {\n                            matcher(unmatched, setMatched, context, xml);\n                        }\n\n                        if (seed) {\n                            // Reintegrate element matches to eliminate the need for sorting\n                            if (matchedCount > 0) {\n                                while (i--) {\n                                    if (!(unmatched[i] || setMatched[i])) {\n                                        setMatched[i] = pop.call(results);\n                                    }\n                                }\n                            }\n\n                            // Discard index placeholder values to get only actual matches\n                            setMatched = condense(setMatched);\n                        }\n\n                        // Add matches to results\n                        push.apply(results, setMatched);\n\n                        // Seedless set matches succeeding multiple successful matchers stipulate sorting\n                        if (outermost && !seed && setMatched.length > 0 &&\n                            (matchedCount + setMatchers.length) > 1) {\n\n                            Sizzle.uniqueSort(results);\n                        }\n                    }\n\n                    // Override manipulation of globals by nested matchers\n                    if (outermost) {\n                        dirruns = dirrunsUnique;\n                        outermostContext = contextBackup;\n                    }\n\n                    return unmatched;\n                };\n\n            return bySet ?\n                markFunction(superMatcher) :\n                superMatcher;\n        }\n\n        compile = Sizzle.compile = function (selector, match /* Internal Use Only */) {\n            var i,\n                setMatchers = [],\n                elementMatchers = [],\n                cached = compilerCache[selector + \" \"];\n\n            if (!cached) {\n                // Generate a function of recursive functions that can be used to check each element\n                if (!match) {\n                    match = tokenize(selector);\n                }\n                i = match.length;\n                while (i--) {\n                    cached = matcherFromTokens(match[i]);\n                    if (cached[expando]) {\n                        setMatchers.push(cached);\n                    } else {\n                        elementMatchers.push(cached);\n                    }\n                }\n\n                // Cache the compiled function\n                cached = compilerCache(selector, matcherFromGroupMatchers(elementMatchers, setMatchers));\n\n                // Save selector and tokenization\n                cached.selector = selector;\n            }\n            return cached;\n        };\n\n        /**\n         * A low-level selection function that works with Sizzle's compiled\n         *  selector functions\n         * @param {String|Function} selector A selector or a pre-compiled\n         *  selector function built with Sizzle.compile\n         * @param {Element} context\n         * @param {Array} [results]\n         * @param {Array} [seed] A set of elements to match against\n         */\n        select = Sizzle.select = function (selector, context, results, seed) {\n            var i, tokens, token, type, find,\n                compiled = typeof selector === \"function\" && selector,\n                match = !seed && tokenize((selector = compiled.selector || selector));\n\n            results = results || [];\n\n            // Try to minimize operations if there is only one selector in the list and no seed\n            // (the latter of which guarantees us context)\n            if (match.length === 1) {\n\n                // Reduce context if the leading compound selector is an ID\n                tokens = match[0] = match[0].slice(0);\n                if (tokens.length > 2 && (token = tokens[0]).type === \"ID\" &&\n                    context.nodeType === 9 && documentIsHTML && Expr.relative[tokens[1].type]) {\n\n                    context = (Expr.find[\"ID\"](token.matches[0].replace(runescape, funescape), context) || [])[0];\n                    if (!context) {\n                        return results;\n\n                        // Precompiled matchers will still verify ancestry, so step up a level\n                    } else if (compiled) {\n                        context = context.parentNode;\n                    }\n\n                    selector = selector.slice(tokens.shift().value.length);\n                }\n\n                // Fetch a seed set for right-to-left matching\n                i = matchExpr[\"needsContext\"].test(selector) ? 0 : tokens.length;\n                while (i--) {\n                    token = tokens[i];\n\n                    // Abort if we hit a combinator\n                    if (Expr.relative[(type = token.type)]) {\n                        break;\n                    }\n                    if ((find = Expr.find[type])) {\n                        // Search, expanding context for leading sibling combinators\n                        if ((seed = find(\n                            token.matches[0].replace(runescape, funescape),\n                            rsibling.test(tokens[0].type) && testContext(context.parentNode) || context\n                        ))) {\n\n                            // If seed is empty or no tokens remain, we can return early\n                            tokens.splice(i, 1);\n                            selector = seed.length && toSelector(tokens);\n                            if (!selector) {\n                                push.apply(results, seed);\n                                return results;\n                            }\n\n                            break;\n                        }\n                    }\n                }\n            }\n\n            // Compile and execute a filtering function if one is not provided\n            // Provide `match` to avoid retokenization if we modified the selector above\n            (compiled || compile(selector, match))(\n                seed,\n                context,\n                !documentIsHTML,\n                results,\n                !context || rsibling.test(selector) && testContext(context.parentNode) || context\n            );\n            return results;\n        };\n\n// One-time assignments\n\n// Sort stability\n        support.sortStable = expando.split(\"\").sort(sortOrder).join(\"\") === expando;\n\n// Support: Chrome 14-35+\n// Always assume duplicates if they aren't passed to the comparison function\n        support.detectDuplicates = !!hasDuplicate;\n\n// Initialize against the default document\n        setDocument();\n        \n        return Sizzle;\n\n    })(window);\n\n\njQuery.find = Sizzle;\njQuery.expr = Sizzle.selectors;\n\n// Deprecated\njQuery.expr[\":\"] = jQuery.expr.pseudos;\njQuery.uniqueSort = jQuery.unique = Sizzle.uniqueSort;\njQuery.text = Sizzle.getText;\njQuery.isXMLDoc = Sizzle.isXML;\njQuery.contains = Sizzle.contains;\njQuery.escapeSelector = Sizzle.escape;\n\n\nvar dir = function (elem, dir, until) {\n    var matched = [],\n        truncate = until !== undefined;\n\n    while ((elem = elem[dir]) && elem.nodeType !== 9) {\n        if (elem.nodeType === 1) {\n            if (truncate && jQuery(elem).is(until)) {\n                break;\n            }\n            matched.push(elem);\n        }\n    }\n    return matched;\n};\n\n\nvar siblings = function (n, elem) {\n    var matched = [];\n\n    for (; n; n = n.nextSibling) {\n        if (n.nodeType === 1 && n !== elem) {\n            matched.push(n);\n        }\n    }\n\n    return matched;\n};\n\n\nvar rneedsContext = jQuery.expr.match.needsContext;\n\n\nfunction nodeName(elem, name) {\n\n    return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();\n\n}\nvar rsingleTag = (/^<([a-z][^\\/\\0>:\\x20\\t\\r\\n\\f]*)[\\x20\\t\\r\\n\\f]*\\/?>(?:<\\/\\1>|)$/i);\n\n\n// Implement the identical functionality for filter and not\nfunction winnow(elements, qualifier, not) {\n    if (isFunction(qualifier)) {\n        return jQuery.grep(elements, function (elem, i) {\n            return !!qualifier.call(elem, i, elem) !== not;\n        });\n    }\n\n    // Single element\n    if (qualifier.nodeType) {\n        return jQuery.grep(elements, function (elem) {\n            return (elem === qualifier) !== not;\n        });\n    }\n\n    // Arraylike of elements (jQuery, arguments, Array)\n    if (typeof qualifier !== \"string\") {\n        return jQuery.grep(elements, function (elem) {\n            return (indexOf.call(qualifier, elem) > -1) !== not;\n        });\n    }\n\n    // Filtered directly for both simple and complex selectors\n    return jQuery.filter(qualifier, elements, not);\n}\n\njQuery.filter = function (expr, elems, not) {\n    var elem = elems[0];\n\n    if (not) {\n        expr = \":not(\" + expr + \")\";\n    }\n\n    if (elems.length === 1 && elem.nodeType === 1) {\n        return jQuery.find.matchesSelector(elem, expr) ? [elem] : [];\n    }\n\n    return jQuery.find.matches(expr, jQuery.grep(elems, function (elem) {\n        return elem.nodeType === 1;\n    }));\n};\n\njQuery.fn.extend({\n    find: function (selector) {\n        var i, ret,\n            len = this.length,\n            self = this;\n\n        if (typeof selector !== \"string\") {\n            return this.pushStack(jQuery(selector).filter(function () {\n                for (i = 0; i < len; i++) {\n                    if (jQuery.contains(self[i], this)) {\n                        return true;\n                    }\n                }\n            }));\n        }\n\n        ret = this.pushStack([]);\n\n        for (i = 0; i < len; i++) {\n            jQuery.find(selector, self[i], ret);\n        }\n\n        return len > 1 ? jQuery.uniqueSort(ret) : ret;\n    },\n    filter: function (selector) {\n        return this.pushStack(winnow(this, selector || [], false));\n    },\n    not: function (selector) {\n        return this.pushStack(winnow(this, selector || [], true));\n    },\n    is: function (selector) {\n        return !!winnow(\n            this,\n\n            // If this is a positional/relative selector, check membership in the returned set\n            // so $(\"p:first\").is(\"p:last\") won't return true for a doc with two \"p\".\n            typeof selector === \"string\" && rneedsContext.test(selector) ?\n                jQuery(selector) :\n                selector || [],\n            false\n        ).length;\n    }\n});\n\n\n// Initialize a jQuery object\n\n\n// A central reference to the root jQuery(document)\nvar rootjQuery,\n\n    // A simple way to check for HTML strings\n    // Prioritize #id over <tag> to avoid XSS via location.hash (#9521)\n    // Strict HTML recognition (#11290: must start with <)\n    // Shortcut simple #id case for speed\n    rquickExpr = /^(?:\\s*(<[\\w\\W]+>)[^>]*|#([\\w-]+))$/,\n\n    init = jQuery.fn.init = function (selector, context, root) {\n        var match, elem;\n\n        // HANDLE: $(\"\"), $(null), $(undefined), $(false)\n        if (!selector) {\n            return this;\n        }\n\n        // Method init() accepts an alternate rootjQuery\n        // so migrate can support jQuery.sub (gh-2101)\n        root = root || rootjQuery;\n\n        // Handle HTML strings\n        if (typeof selector === \"string\") {\n            if (selector[0] === \"<\" &&\n                selector[selector.length - 1] === \">\" &&\n                selector.length >= 3) {\n\n                // Assume that strings that start and end with <> are HTML and skip the regex check\n                match = [null, selector, null];\n\n            } else {\n                match = rquickExpr.exec(selector);\n            }\n\n            // Match html or make sure no context is specified for #id\n            if (match && (match[1] || !context)) {\n\n                // HANDLE: $(html) -> $(array)\n                if (match[1]) {\n                    context = context instanceof jQuery ? context[0] : context;\n\n                    // Option to run scripts is true for back-compat\n                    // Intentionally let the error be thrown if parseHTML is not present\n                    jQuery.merge(this, jQuery.parseHTML(\n                        match[1],\n                        context && context.nodeType ? context.ownerDocument || context : document,\n                        true\n                    ));\n\n                    // HANDLE: $(html, props)\n                    if (rsingleTag.test(match[1]) && jQuery.isPlainObject(context)) {\n                        for (match in context) {\n\n                            // Properties of context are called as methods if possible\n                            if (isFunction(this[match])) {\n                                this[match](context[match]);\n\n                                // ...and otherwise set as attributes\n                            } else {\n                                this.attr(match, context[match]);\n                            }\n                        }\n                    }\n\n                    return this;\n\n                    // HANDLE: $(#id)\n                } else {\n                    elem = document.getElementById(match[2]);\n\n                    if (elem) {\n\n                        // Inject the element directly into the jQuery object\n                        this[0] = elem;\n                        this.length = 1;\n                    }\n                    return this;\n                }\n\n                // HANDLE: $(expr, $(...))\n            } else if (!context || context.jquery) {\n                return (context || root).find(selector);\n\n                // HANDLE: $(expr, context)\n                // (which is just equivalent to: $(context).find(expr)\n            } else {\n                return this.constructor(context).find(selector);\n            }\n\n            // HANDLE: $(DOMElement)\n        } else if (selector.nodeType) {\n            this[0] = selector;\n            this.length = 1;\n            return this;\n\n            // HANDLE: $(function)\n            // Shortcut for document ready\n        } else if (isFunction(selector)) {\n            return root.ready !== undefined ?\n                root.ready(selector) :\n\n                // Execute immediately if ready is not present\n                selector(jQuery);\n        }\n\n        return jQuery.makeArray(selector, this);\n    };\n\n// Give the init function the jQuery prototype for later instantiation\ninit.prototype = jQuery.fn;\n\n// Initialize central reference\nrootjQuery = jQuery(document);\n\n\nvar rparentsprev = /^(?:parents|prev(?:Until|All))/,\n\n    // Methods guaranteed to produce a unique set when starting from a unique set\n    guaranteedUnique = {\n        children: true,\n        contents: true,\n        next: true,\n        prev: true\n    };\n\njQuery.fn.extend({\n    has: function (target) {\n        var targets = jQuery(target, this),\n            l = targets.length;\n\n        return this.filter(function () {\n            var i = 0;\n            for (; i < l; i++) {\n                if (jQuery.contains(this, targets[i])) {\n                    return true;\n                }\n            }\n        });\n    },\n\n    closest: function (selectors, context) {\n        var cur,\n            i = 0,\n            l = this.length,\n            matched = [],\n            targets = typeof selectors !== \"string\" && jQuery(selectors);\n\n        // Positional selectors never match, since there's no _selection_ context\n        if (!rneedsContext.test(selectors)) {\n            for (; i < l; i++) {\n                for (cur = this[i]; cur && cur !== context; cur = cur.parentNode) {\n\n                    // Always skip document fragments\n                    if (cur.nodeType < 11 && (targets ?\n                        targets.index(cur) > -1 :\n\n                        // Don't pass non-elements to Sizzle\n                        cur.nodeType === 1 &&\n                        jQuery.find.matchesSelector(cur, selectors))) {\n\n                        matched.push(cur);\n                        break;\n                    }\n                }\n            }\n        }\n\n        return this.pushStack(matched.length > 1 ? jQuery.uniqueSort(matched) : matched);\n    },\n\n    // Determine the position of an element within the set\n    index: function (elem) {\n\n        // No argument, return index in parent\n        if (!elem) {\n            return (this[0] && this[0].parentNode) ? this.first().prevAll().length : -1;\n        }\n\n        // Index in selector\n        if (typeof elem === \"string\") {\n            return indexOf.call(jQuery(elem), this[0]);\n        }\n\n        // Locate the position of the desired element\n        return indexOf.call(this,\n\n            // If it receives a jQuery object, the first element is used\n            elem.jquery ? elem[0] : elem\n        );\n    },\n\n    add: function (selector, context) {\n        return this.pushStack(\n            jQuery.uniqueSort(\n                jQuery.merge(this.get(), jQuery(selector, context))\n            )\n        );\n    },\n\n    addBack: function (selector) {\n        return this.add(selector == null ?\n            this.prevObject : this.prevObject.filter(selector)\n        );\n    }\n});\n\nfunction sibling(cur, dir) {\n    while ((cur = cur[dir]) && cur.nodeType !== 1) {\n    }\n    return cur;\n}\n\njQuery.each({\n    parent: function (elem) {\n        var parent = elem.parentNode;\n        return parent && parent.nodeType !== 11 ? parent : null;\n    },\n    parents: function (elem) {\n        return dir(elem, \"parentNode\");\n    },\n    parentsUntil: function (elem, i, until) {\n        return dir(elem, \"parentNode\", until);\n    },\n    next: function (elem) {\n        return sibling(elem, \"nextSibling\");\n    },\n    prev: function (elem) {\n        return sibling(elem, \"previousSibling\");\n    },\n    nextAll: function (elem) {\n        return dir(elem, \"nextSibling\");\n    },\n    prevAll: function (elem) {\n        return dir(elem, \"previousSibling\");\n    },\n    nextUntil: function (elem, i, until) {\n        return dir(elem, \"nextSibling\", until);\n    },\n    prevUntil: function (elem, i, until) {\n        return dir(elem, \"previousSibling\", until);\n    },\n    siblings: function (elem) {\n        return siblings((elem.parentNode || {}).firstChild, elem);\n    },\n    children: function (elem) {\n        return siblings(elem.firstChild);\n    },\n    contents: function (elem) {\n        if (nodeName(elem, \"iframe\")) {\n            return elem.contentDocument;\n        }\n\n        // Support: IE 9 - 11 only, iOS 7 only, Android Browser <=4.3 only\n        // Treat the template element as a regular one in browsers that\n        // don't support it.\n        if (nodeName(elem, \"template\")) {\n            elem = elem.content || elem;\n        }\n\n        return jQuery.merge([], elem.childNodes);\n    }\n}, function (name, fn) {\n    jQuery.fn[name] = function (until, selector) {\n        var matched = jQuery.map(this, fn, until);\n\n        if (name.slice(-5) !== \"Until\") {\n            selector = until;\n        }\n\n        if (selector && typeof selector === \"string\") {\n            matched = jQuery.filter(selector, matched);\n        }\n\n        if (this.length > 1) {\n\n            // Remove duplicates\n            if (!guaranteedUnique[name]) {\n                jQuery.uniqueSort(matched);\n            }\n\n            // Reverse order for parents* and prev-derivatives\n            if (rparentsprev.test(name)) {\n                matched.reverse();\n            }\n        }\n\n        return this.pushStack(matched);\n    };\n});\nvar rnothtmlwhite = (/[^\\x20\\t\\r\\n\\f]+/g);\n\n\n// Convert String-formatted options into Object-formatted ones\nfunction createOptions(options) {\n    var object = {};\n    jQuery.each(options.match(rnothtmlwhite) || [], function (_, flag) {\n        object[flag] = true;\n    });\n    return object;\n}\n\n/*\n * Create a callback list using the following parameters:\n *\n *\toptions: an optional list of space-separated options that will change how\n *\t\t\tthe callback list behaves or a more traditional option object\n *\n * By default a callback list will act like an event callback list and can be\n * \"fired\" multiple times.\n *\n * Possible options:\n *\n *\tonce:\t\t\twill ensure the callback list can only be fired once (like a Deferred)\n *\n *\tmemory:\t\t\twill keep track of previous values and will call any callback added\n *\t\t\t\t\tafter the list has been fired right away with the latest \"memorized\"\n *\t\t\t\t\tvalues (like a Deferred)\n *\n *\tunique:\t\t\twill ensure a callback can only be added once (no duplicate in the list)\n *\n *\tstopOnFalse:\tinterrupt callings when a callback returns false\n *\n */\njQuery.Callbacks = function (options) {\n\n    // Convert options from String-formatted to Object-formatted if needed\n    // (we check in cache first)\n    options = typeof options === \"string\" ?\n        createOptions(options) :\n        jQuery.extend({}, options);\n\n    var // Flag to know if list is currently firing\n        firing,\n\n        // Last fire value for non-forgettable lists\n        memory,\n\n        // Flag to know if list was already fired\n        fired,\n\n        // Flag to prevent firing\n        locked,\n\n        // Actual callback list\n        list = [],\n\n        // Queue of execution data for repeatable lists\n        queue = [],\n\n        // Index of currently firing callback (modified by add/remove as needed)\n        firingIndex = -1,\n\n        // Fire callbacks\n        fire = function () {\n\n            // Enforce single-firing\n            locked = locked || options.once;\n\n            // Execute callbacks for all pending executions,\n            // respecting firingIndex overrides and runtime changes\n            fired = firing = true;\n            for (; queue.length; firingIndex = -1) {\n                memory = queue.shift();\n                while (++firingIndex < list.length) {\n\n                    // Run callback and check for early termination\n                    if (list[firingIndex].apply(memory[0], memory[1]) === false &&\n                        options.stopOnFalse) {\n\n                        // Jump to end and forget the data so .add doesn't re-fire\n                        firingIndex = list.length;\n                        memory = false;\n                    }\n                }\n            }\n\n            // Forget the data if we're done with it\n            if (!options.memory) {\n                memory = false;\n            }\n\n            firing = false;\n\n            // Clean up if we're done firing for good\n            if (locked) {\n\n                // Keep an empty list if we have data for future add calls\n                if (memory) {\n                    list = [];\n\n                    // Otherwise, this object is spent\n                } else {\n                    list = \"\";\n                }\n            }\n        },\n\n        // Actual Callbacks object\n        self = {\n\n            // Add a callback or a collection of callbacks to the list\n            add: function () {\n                if (list) {\n\n                    // If we have memory from a past run, we should fire after adding\n                    if (memory && !firing) {\n                        firingIndex = list.length - 1;\n                        queue.push(memory);\n                    }\n\n                    (function add(args) {\n                        jQuery.each(args, function (_, arg) {\n                            if (isFunction(arg)) {\n                                if (!options.unique || !self.has(arg)) {\n                                    list.push(arg);\n                                }\n                            } else if (arg && arg.length && toType(arg) !== \"string\") {\n\n                                // Inspect recursively\n                                add(arg);\n                            }\n                        });\n                    })(arguments);\n\n                    if (memory && !firing) {\n                        fire();\n                    }\n                }\n                return this;\n            },\n\n            // Remove a callback from the list\n            remove: function () {\n                jQuery.each(arguments, function (_, arg) {\n                    var index;\n                    while ((index = jQuery.inArray(arg, list, index)) > -1) {\n                        list.splice(index, 1);\n\n                        // Handle firing indexes\n                        if (index <= firingIndex) {\n                            firingIndex--;\n                        }\n                    }\n                });\n                return this;\n            },\n\n            // Check if a given callback is in the list.\n            // If no argument is given, return whether or not list has callbacks attached.\n            has: function (fn) {\n                return fn ?\n                    jQuery.inArray(fn, list) > -1 :\n                    list.length > 0;\n            },\n\n            // Remove all callbacks from the list\n            empty: function () {\n                if (list) {\n                    list = [];\n                }\n                return this;\n            },\n\n            // Disable .fire and .add\n            // Abort any current/pending executions\n            // Clear all callbacks and values\n            disable: function () {\n                locked = queue = [];\n                list = memory = \"\";\n                return this;\n            },\n            disabled: function () {\n                return !list;\n            },\n\n            // Disable .fire\n            // Also disable .add unless we have memory (since it would have no effect)\n            // Abort any pending executions\n            lock: function () {\n                locked = queue = [];\n                if (!memory && !firing) {\n                    list = memory = \"\";\n                }\n                return this;\n            },\n            locked: function () {\n                return !!locked;\n            },\n\n            // Call all callbacks with the given context and arguments\n            fireWith: function (context, args) {\n                if (!locked) {\n                    args = args || [];\n                    args = [context, args.slice ? args.slice() : args];\n                    queue.push(args);\n                    if (!firing) {\n                        fire();\n                    }\n                }\n                return this;\n            },\n\n            // Call all the callbacks with the given arguments\n            fire: function () {\n                self.fireWith(this, arguments);\n                return this;\n            },\n\n            // To know if the callbacks have already been called at least once\n            fired: function () {\n                return !!fired;\n            }\n        };\n\n    return self;\n};\n\n\nfunction Identity(v) {\n    return v;\n}\n\nfunction Thrower(ex) {\n    throw ex;\n}\n\nfunction adoptValue(value, resolve, reject, noValue) {\n    var method;\n\n    try {\n\n        // Check for promise aspect first to privilege synchronous behavior\n        if (value && isFunction((method = value.promise))) {\n            method.call(value).done(resolve).fail(reject);\n\n            // Other thenables\n        } else if (value && isFunction((method = value.then))) {\n            method.call(value, resolve, reject);\n\n            // Other non-thenables\n        } else {\n\n            // Control `resolve` arguments by letting Array#slice cast boolean `noValue` to integer:\n            // * false: [ value ].slice( 0 ) => resolve( value )\n            // * true: [ value ].slice( 1 ) => resolve()\n            resolve.apply(undefined, [value].slice(noValue));\n        }\n\n        // For Promises/A+, convert exceptions into rejections\n        // Since jQuery.when doesn't unwrap thenables, we can skip the extra checks appearing in\n        // Deferred#then to conditionally suppress rejection.\n    } catch (value) {\n\n        // Support: Android 4.0 only\n        // Strict mode functions invoked without .call/.apply get global-object context\n        reject.apply(undefined, [value]);\n    }\n}\n\njQuery.extend({\n\n    Deferred: function (func) {\n        var tuples = [\n\n                // action, add listener, callbacks,\n                // ... .then handlers, argument index, [final state]\n                [\"notify\", \"progress\", jQuery.Callbacks(\"memory\"),\n                    jQuery.Callbacks(\"memory\"), 2],\n                [\"resolve\", \"done\", jQuery.Callbacks(\"once memory\"),\n                    jQuery.Callbacks(\"once memory\"), 0, \"resolved\"],\n                [\"reject\", \"fail\", jQuery.Callbacks(\"once memory\"),\n                    jQuery.Callbacks(\"once memory\"), 1, \"rejected\"]\n            ],\n            state = \"pending\",\n            promise = {\n                state: function () {\n                    return state;\n                },\n                always: function () {\n                    deferred.done(arguments).fail(arguments);\n                    return this;\n                },\n                \"catch\": function (fn) {\n                    return promise.then(null, fn);\n                },\n\n                // Keep pipe for back-compat\n                pipe: function ( /* fnDone, fnFail, fnProgress */) {\n                    var fns = arguments;\n\n                    return jQuery.Deferred(function (newDefer) {\n                        jQuery.each(tuples, function (i, tuple) {\n\n                            // Map tuples (progress, done, fail) to arguments (done, fail, progress)\n                            var fn = isFunction(fns[tuple[4]]) && fns[tuple[4]];\n\n                            // deferred.progress(function() { bind to newDefer or newDefer.notify })\n                            // deferred.done(function() { bind to newDefer or newDefer.resolve })\n                            // deferred.fail(function() { bind to newDefer or newDefer.reject })\n                            deferred[tuple[1]](function () {\n                                var returned = fn && fn.apply(this, arguments);\n                                if (returned && isFunction(returned.promise)) {\n                                    returned.promise()\n                                        .progress(newDefer.notify)\n                                        .done(newDefer.resolve)\n                                        .fail(newDefer.reject);\n                                } else {\n                                    newDefer[tuple[0] + \"With\"](\n                                        this,\n                                        fn ? [returned] : arguments\n                                    );\n                                }\n                            });\n                        });\n                        fns = null;\n                    }).promise();\n                },\n                then: function (onFulfilled, onRejected, onProgress) {\n                    var maxDepth = 0;\n\n                    function resolve(depth, deferred, handler, special) {\n                        return function () {\n                            var that = this,\n                                args = arguments,\n                                mightThrow = function () {\n                                    var returned, then;\n\n                                    // Support: Promises/A+ section 2.3.3.3.3\n                                    // https://promisesaplus.com/#point-59\n                                    // Ignore double-resolution attempts\n                                    if (depth < maxDepth) {\n                                        return;\n                                    }\n\n                                    returned = handler.apply(that, args);\n\n                                    // Support: Promises/A+ section 2.3.1\n                                    // https://promisesaplus.com/#point-48\n                                    if (returned === deferred.promise()) {\n                                        throw new TypeError(\"Thenable self-resolution\");\n                                    }\n\n                                    // Support: Promises/A+ sections 2.3.3.1, 3.5\n                                    // https://promisesaplus.com/#point-54\n                                    // https://promisesaplus.com/#point-75\n                                    // Retrieve `then` only once\n                                    then = returned &&\n\n                                        // Support: Promises/A+ section 2.3.4\n                                        // https://promisesaplus.com/#point-64\n                                        // Only check objects and functions for thenability\n                                        (typeof returned === \"object\" ||\n                                            typeof returned === \"function\") &&\n                                        returned.then;\n\n                                    // Handle a returned thenable\n                                    if (isFunction(then)) {\n\n                                        // Special processors (notify) just wait for resolution\n                                        if (special) {\n                                            then.call(\n                                                returned,\n                                                resolve(maxDepth, deferred, Identity, special),\n                                                resolve(maxDepth, deferred, Thrower, special)\n                                            );\n\n                                            // Normal processors (resolve) also hook into progress\n                                        } else {\n\n                                            // ...and disregard older resolution values\n                                            maxDepth++;\n\n                                            then.call(\n                                                returned,\n                                                resolve(maxDepth, deferred, Identity, special),\n                                                resolve(maxDepth, deferred, Thrower, special),\n                                                resolve(maxDepth, deferred, Identity,\n                                                    deferred.notifyWith)\n                                            );\n                                        }\n\n                                        // Handle all other returned values\n                                    } else {\n\n                                        // Only substitute handlers pass on context\n                                        // and multiple values (non-spec behavior)\n                                        if (handler !== Identity) {\n                                            that = undefined;\n                                            args = [returned];\n                                        }\n\n                                        // Process the value(s)\n                                        // Default process is resolve\n                                        (special || deferred.resolveWith)(that, args);\n                                    }\n                                },\n\n                                // Only normal processors (resolve) catch and reject exceptions\n                                process = special ?\n                                    mightThrow :\n                                    function () {\n                                        try {\n                                            mightThrow();\n                                        } catch (e) {\n\n                                            if (jQuery.Deferred.exceptionHook) {\n                                                jQuery.Deferred.exceptionHook(e,\n                                                    process.stackTrace);\n                                            }\n\n                                            // Support: Promises/A+ section 2.3.3.3.4.1\n                                            // https://promisesaplus.com/#point-61\n                                            // Ignore post-resolution exceptions\n                                            if (depth + 1 >= maxDepth) {\n\n                                                // Only substitute handlers pass on context\n                                                // and multiple values (non-spec behavior)\n                                                if (handler !== Thrower) {\n                                                    that = undefined;\n                                                    args = [e];\n                                                }\n\n                                                deferred.rejectWith(that, args);\n                                            }\n                                        }\n                                    };\n\n                            // Support: Promises/A+ section 2.3.3.3.1\n                            // https://promisesaplus.com/#point-57\n                            // Re-resolve promises immediately to dodge false rejection from\n                            // subsequent errors\n                            if (depth) {\n                                process();\n                            } else {\n\n                                // Call an optional hook to record the stack, in case of exception\n                                // since it's otherwise lost when execution goes async\n                                if (jQuery.Deferred.getStackHook) {\n                                    process.stackTrace = jQuery.Deferred.getStackHook();\n                                }\n                                window.setTimeout(process);\n                            }\n                        };\n                    }\n\n                    return jQuery.Deferred(function (newDefer) {\n\n                        // progress_handlers.add( ... )\n                        tuples[0][3].add(\n                            resolve(\n                                0,\n                                newDefer,\n                                isFunction(onProgress) ?\n                                    onProgress :\n                                    Identity,\n                                newDefer.notifyWith\n                            )\n                        );\n\n                        // fulfilled_handlers.add( ... )\n                        tuples[1][3].add(\n                            resolve(\n                                0,\n                                newDefer,\n                                isFunction(onFulfilled) ?\n                                    onFulfilled :\n                                    Identity\n                            )\n                        );\n\n                        // rejected_handlers.add( ... )\n                        tuples[2][3].add(\n                            resolve(\n                                0,\n                                newDefer,\n                                isFunction(onRejected) ?\n                                    onRejected :\n                                    Thrower\n                            )\n                        );\n                    }).promise();\n                },\n\n                // Get a promise for this deferred\n                // If obj is provided, the promise aspect is added to the object\n                promise: function (obj) {\n                    return obj != null ? jQuery.extend(obj, promise) : promise;\n                }\n            },\n            deferred = {};\n\n        // Add list-specific methods\n        jQuery.each(tuples, function (i, tuple) {\n            var list = tuple[2],\n                stateString = tuple[5];\n\n            // promise.progress = list.add\n            // promise.done = list.add\n            // promise.fail = list.add\n            promise[tuple[1]] = list.add;\n\n            // Handle state\n            if (stateString) {\n                list.add(\n                    function () {\n\n                        // state = \"resolved\" (i.e., fulfilled)\n                        // state = \"rejected\"\n                        state = stateString;\n                    },\n\n                    // rejected_callbacks.disable\n                    // fulfilled_callbacks.disable\n                    tuples[3 - i][2].disable,\n\n                    // rejected_handlers.disable\n                    // fulfilled_handlers.disable\n                    tuples[3 - i][3].disable,\n\n                    // progress_callbacks.lock\n                    tuples[0][2].lock,\n\n                    // progress_handlers.lock\n                    tuples[0][3].lock\n                );\n            }\n\n            // progress_handlers.fire\n            // fulfilled_handlers.fire\n            // rejected_handlers.fire\n            list.add(tuple[3].fire);\n\n            // deferred.notify = function() { deferred.notifyWith(...) }\n            // deferred.resolve = function() { deferred.resolveWith(...) }\n            // deferred.reject = function() { deferred.rejectWith(...) }\n            deferred[tuple[0]] = function () {\n                deferred[tuple[0] + \"With\"](this === deferred ? undefined : this, arguments);\n                return this;\n            };\n\n            // deferred.notifyWith = list.fireWith\n            // deferred.resolveWith = list.fireWith\n            // deferred.rejectWith = list.fireWith\n            deferred[tuple[0] + \"With\"] = list.fireWith;\n        });\n\n        // Make the deferred a promise\n        promise.promise(deferred);\n\n        // Call given func if any\n        if (func) {\n            func.call(deferred, deferred);\n        }\n\n        // All done!\n        return deferred;\n    },\n\n    // Deferred helper\n    when: function (singleValue) {\n        var\n\n            // count of uncompleted subordinates\n            remaining = arguments.length,\n\n            // count of unprocessed arguments\n            i = remaining,\n\n            // subordinate fulfillment data\n            resolveContexts = Array(i),\n            resolveValues = slice.call(arguments),\n\n            // the master Deferred\n            master = jQuery.Deferred(),\n\n            // subordinate callback factory\n            updateFunc = function (i) {\n                return function (value) {\n                    resolveContexts[i] = this;\n                    resolveValues[i] = arguments.length > 1 ? slice.call(arguments) : value;\n                    if (!(--remaining)) {\n                        master.resolveWith(resolveContexts, resolveValues);\n                    }\n                };\n            };\n\n        // Single- and empty arguments are adopted like Promise.resolve\n        if (remaining <= 1) {\n            adoptValue(singleValue, master.done(updateFunc(i)).resolve, master.reject,\n                !remaining);\n\n            // Use .then() to unwrap secondary thenables (cf. gh-3000)\n            if (master.state() === \"pending\" ||\n                isFunction(resolveValues[i] && resolveValues[i].then)) {\n\n                return master.then();\n            }\n        }\n\n        // Multiple arguments are aggregated like Promise.all array elements\n        while (i--) {\n            adoptValue(resolveValues[i], updateFunc(i), master.reject);\n        }\n\n        return master.promise();\n    }\n});\n\n\n// These usually indicate a programmer mistake during development,\n// warn about them ASAP rather than swallowing them by default.\nvar rerrorNames = /^(Eval|Internal|Range|Reference|Syntax|Type|URI)Error$/;\n\njQuery.Deferred.exceptionHook = function (error, stack) {\n\n    // Support: IE 8 - 9 only\n    // Console exists when dev tools are open, which can happen at any time\n    if (window.console && window.console.warn && error && rerrorNames.test(error.name)) {\n        window.console.warn(\"jQuery.Deferred exception: \" + error.message, error.stack, stack);\n    }\n};\n\n\njQuery.readyException = function (error) {\n    window.setTimeout(function () {\n        throw error;\n    });\n};\n\n\n// The deferred used on DOM ready\nvar readyList = jQuery.Deferred();\n\njQuery.fn.ready = function (fn) {\n\n    readyList\n        .then(fn)\n\n        // Wrap jQuery.readyException in a function so that the lookup\n        // happens at the time of error handling instead of callback\n        // registration.\n        .catch(function (error) {\n            jQuery.readyException(error);\n        });\n\n    return this;\n};\n\njQuery.extend({\n\n    // Is the DOM ready to be used? Set to true once it occurs.\n    isReady: false,\n\n    // A counter to track how many items to wait for before\n    // the ready event fires. See #6781\n    readyWait: 1,\n\n    // Handle when the DOM is ready\n    ready: function (wait) {\n\n        // Abort if there are pending holds or we're already ready\n        if (wait === true ? --jQuery.readyWait : jQuery.isReady) {\n            return;\n        }\n\n        // Remember that the DOM is ready\n        jQuery.isReady = true;\n\n        // If a normal DOM Ready event fired, decrement, and wait if need be\n        if (wait !== true && --jQuery.readyWait > 0) {\n            return;\n        }\n\n        // If there are functions bound, to execute\n        readyList.resolveWith(document, [jQuery]);\n    }\n});\n\njQuery.ready.then = readyList.then;\n\n// The ready event handler and self cleanup method\nfunction completed() {\n    document.removeEventListener(\"DOMContentLoaded\", completed);\n    window.removeEventListener(\"load\", completed);\n    jQuery.ready();\n}\n\n// Catch cases where $(document).ready() is called\n// after the browser event has already occurred.\n// Support: IE <=9 - 10 only\n// Older IE sometimes signals \"interactive\" too soon\nif (document.readyState === \"complete\" ||\n    (document.readyState !== \"loading\" && !document.documentElement.doScroll)) {\n\n    // Handle it asynchronously to allow scripts the opportunity to delay ready\n    window.setTimeout(jQuery.ready);\n\n} else {\n\n    // Use the handy event callback\n    document.addEventListener(\"DOMContentLoaded\", completed);\n\n    // A fallback to window.onload, that will always work\n    window.addEventListener(\"load\", completed);\n}\n\n\n// Multifunctional method to get and set values of a collection\n// The value/s can optionally be executed if it's a function\nvar access = function (elems, fn, key, value, chainable, emptyGet, raw) {\n    var i = 0,\n        len = elems.length,\n        bulk = key == null;\n\n    // Sets many values\n    if (toType(key) === \"object\") {\n        chainable = true;\n        for (i in key) {\n            access(elems, fn, i, key[i], true, emptyGet, raw);\n        }\n\n        // Sets one value\n    } else if (value !== undefined) {\n        chainable = true;\n\n        if (!isFunction(value)) {\n            raw = true;\n        }\n\n        if (bulk) {\n\n            // Bulk operations run against the entire set\n            if (raw) {\n                fn.call(elems, value);\n                fn = null;\n\n                // ...except when executing function values\n            } else {\n                bulk = fn;\n                fn = function (elem, key, value) {\n                    return bulk.call(jQuery(elem), value);\n                };\n            }\n        }\n\n        if (fn) {\n            for (; i < len; i++) {\n                fn(\n                    elems[i], key, raw ?\n                        value :\n                        value.call(elems[i], i, fn(elems[i], key))\n                );\n            }\n        }\n    }\n\n    if (chainable) {\n        return elems;\n    }\n\n    // Gets\n    if (bulk) {\n        return fn.call(elems);\n    }\n\n    return len ? fn(elems[0], key) : emptyGet;\n};\n\n\n// Matches dashed string for camelizing\nvar rmsPrefix = /^-ms-/,\n    rdashAlpha = /-([a-z])/g;\n\n// Used by camelCase as callback to replace()\nfunction fcamelCase(all, letter) {\n    return letter.toUpperCase();\n}\n\n// Convert dashed to camelCase; used by the css and data modules\n// Support: IE <=9 - 11, Edge 12 - 15\n// Microsoft forgot to hump their vendor prefix (#9572)\nfunction camelCase(string) {\n    return string.replace(rmsPrefix, \"ms-\").replace(rdashAlpha, fcamelCase);\n}\n\nvar acceptData = function (owner) {\n\n    // Accepts only:\n    //  - Node\n    //    - Node.ELEMENT_NODE\n    //    - Node.DOCUMENT_NODE\n    //  - Object\n    //    - Any\n    return owner.nodeType === 1 || owner.nodeType === 9 || !(+owner.nodeType);\n};\n\n\nfunction Data() {\n    this.expando = jQuery.expando + Data.uid++;\n}\n\nData.uid = 1;\n\nData.prototype = {\n\n    cache: function (owner) {\n\n        // Check if the owner object already has a cache\n        var value = owner[this.expando];\n\n        // If not, create one\n        if (!value) {\n            value = {};\n\n            // We can accept data for non-element nodes in modern browsers,\n            // but we should not, see #8335.\n            // Always return an empty object.\n            if (acceptData(owner)) {\n\n                // If it is a node unlikely to be stringify-ed or looped over\n                // use plain assignment\n                if (owner.nodeType) {\n                    owner[this.expando] = value;\n\n                    // Otherwise secure it in a non-enumerable property\n                    // configurable must be true to allow the property to be\n                    // deleted when data is removed\n                } else {\n                    Object.defineProperty(owner, this.expando, {\n                        value: value,\n                        configurable: true\n                    });\n                }\n            }\n        }\n\n        return value;\n    },\n    set: function (owner, data, value) {\n        var prop,\n            cache = this.cache(owner);\n\n        // Handle: [ owner, key, value ] args\n        // Always use camelCase key (gh-2257)\n        if (typeof data === \"string\") {\n            cache[camelCase(data)] = value;\n\n            // Handle: [ owner, { properties } ] args\n        } else {\n\n            // Copy the properties one-by-one to the cache object\n            for (prop in data) {\n                cache[camelCase(prop)] = data[prop];\n            }\n        }\n        return cache;\n    },\n    get: function (owner, key) {\n        return key === undefined ?\n            this.cache(owner) :\n\n            // Always use camelCase key (gh-2257)\n            owner[this.expando] && owner[this.expando][camelCase(key)];\n    },\n    access: function (owner, key, value) {\n\n        // In cases where either:\n        //\n        //   1. No key was specified\n        //   2. A string key was specified, but no value provided\n        //\n        // Take the \"read\" path and allow the get method to determine\n        // which value to return, respectively either:\n        //\n        //   1. The entire cache object\n        //   2. The data stored at the key\n        //\n        if (key === undefined ||\n            ((key && typeof key === \"string\") && value === undefined)) {\n\n            return this.get(owner, key);\n        }\n\n        // When the key is not a string, or both a key and value\n        // are specified, set or extend (existing objects) with either:\n        //\n        //   1. An object of properties\n        //   2. A key and value\n        //\n        this.set(owner, key, value);\n\n        // Since the \"set\" path can have two possible entry points\n        // return the expected data based on which path was taken[*]\n        return value !== undefined ? value : key;\n    },\n    remove: function (owner, key) {\n        var i,\n            cache = owner[this.expando];\n\n        if (cache === undefined) {\n            return;\n        }\n\n        if (key !== undefined) {\n\n            // Support array or space separated string of keys\n            if (Array.isArray(key)) {\n\n                // If key is an array of keys...\n                // We always set camelCase keys, so remove that.\n                key = key.map(camelCase);\n            } else {\n                key = camelCase(key);\n\n                // If a key with the spaces exists, use it.\n                // Otherwise, create an array by matching non-whitespace\n                key = key in cache ?\n                    [key] :\n                    (key.match(rnothtmlwhite) || []);\n            }\n\n            i = key.length;\n\n            while (i--) {\n                delete cache[key[i]];\n            }\n        }\n\n        // Remove the expando if there's no more data\n        if (key === undefined || jQuery.isEmptyObject(cache)) {\n\n            // Support: Chrome <=35 - 45\n            // Webkit & Blink performance suffers when deleting properties\n            // from DOM nodes, so set to undefined instead\n            // https://bugs.chromium.org/p/chromium/issues/detail?id=378607 (bug restricted)\n            if (owner.nodeType) {\n                owner[this.expando] = undefined;\n            } else {\n                delete owner[this.expando];\n            }\n        }\n    },\n    hasData: function (owner) {\n        var cache = owner[this.expando];\n        return cache !== undefined && !jQuery.isEmptyObject(cache);\n    }\n};\nvar dataPriv = new Data();\n\nvar dataUser = new Data();\n\n\n//\tImplementation Summary\n//\n//\t1. Enforce API surface and semantic compatibility with 1.9.x branch\n//\t2. Improve the module's maintainability by reducing the storage\n//\t\tpaths to a single mechanism.\n//\t3. Use the same single mechanism to support \"private\" and \"user\" data.\n//\t4. _Never_ expose \"private\" data to user code (TODO: Drop _data, _removeData)\n//\t5. Avoid exposing implementation details on user objects (eg. expando properties)\n//\t6. Provide a clear path for implementation upgrade to WeakMap in 2014\n\nvar rbrace = /^(?:\\{[\\w\\W]*\\}|\\[[\\w\\W]*\\])$/,\n    rmultiDash = /[A-Z]/g;\n\nfunction getData(data) {\n    if (data === \"true\") {\n        return true;\n    }\n\n    if (data === \"false\") {\n        return false;\n    }\n\n    if (data === \"null\") {\n        return null;\n    }\n\n    // Only convert to a number if it doesn't change the string\n    if (data === +data + \"\") {\n        return +data;\n    }\n\n    if (rbrace.test(data)) {\n        return JSON.parse(data);\n    }\n\n    return data;\n}\n\nfunction dataAttr(elem, key, data) {\n    var name;\n\n    // If nothing was found internally, try to fetch any\n    // data from the HTML5 data-* attribute\n    if (data === undefined && elem.nodeType === 1) {\n        name = \"data-\" + key.replace(rmultiDash, \"-$&\").toLowerCase();\n        data = elem.getAttribute(name);\n\n        if (typeof data === \"string\") {\n            try {\n                data = getData(data);\n            } catch (e) {\n            }\n\n            // Make sure we set the data so it isn't changed later\n            dataUser.set(elem, key, data);\n        } else {\n            data = undefined;\n        }\n    }\n    return data;\n}\n\njQuery.extend({\n    hasData: function (elem) {\n        return dataUser.hasData(elem) || dataPriv.hasData(elem);\n    },\n\n    data: function (elem, name, data) {\n        return dataUser.access(elem, name, data);\n    },\n\n    removeData: function (elem, name) {\n        dataUser.remove(elem, name);\n    },\n\n    // TODO: Now that all calls to _data and _removeData have been replaced\n    // with direct calls to dataPriv methods, these can be deprecated.\n    _data: function (elem, name, data) {\n        return dataPriv.access(elem, name, data);\n    },\n\n    _removeData: function (elem, name) {\n        dataPriv.remove(elem, name);\n    }\n});\n\njQuery.fn.extend({\n    data: function (key, value) {\n        var i, name, data,\n            elem = this[0],\n            attrs = elem && elem.attributes;\n\n        // Gets all values\n        if (key === undefined) {\n            if (this.length) {\n                data = dataUser.get(elem);\n\n                if (elem.nodeType === 1 && !dataPriv.get(elem, \"hasDataAttrs\")) {\n                    i = attrs.length;\n                    while (i--) {\n\n                        // Support: IE 11 only\n                        // The attrs elements can be null (#14894)\n                        if (attrs[i]) {\n                            name = attrs[i].name;\n                            if (name.indexOf(\"data-\") === 0) {\n                                name = camelCase(name.slice(5));\n                                dataAttr(elem, name, data[name]);\n                            }\n                        }\n                    }\n                    dataPriv.set(elem, \"hasDataAttrs\", true);\n                }\n            }\n\n            return data;\n        }\n\n        // Sets multiple values\n        if (typeof key === \"object\") {\n            return this.each(function () {\n                dataUser.set(this, key);\n            });\n        }\n\n        return access(this, function (value) {\n            var data;\n\n            // The calling jQuery object (element matches) is not empty\n            // (and therefore has an element appears at this[ 0 ]) and the\n            // `value` parameter was not undefined. An empty jQuery object\n            // will result in `undefined` for elem = this[ 0 ] which will\n            // throw an exception if an attempt to read a data cache is made.\n            if (elem && value === undefined) {\n\n                // Attempt to get data from the cache\n                // The key will always be camelCased in Data\n                data = dataUser.get(elem, key);\n                if (data !== undefined) {\n                    return data;\n                }\n\n                // Attempt to \"discover\" the data in\n                // HTML5 custom data-* attrs\n                data = dataAttr(elem, key);\n                if (data !== undefined) {\n                    return data;\n                }\n\n                // We tried really hard, but the data doesn't exist.\n                return;\n            }\n\n            // Set the data...\n            this.each(function () {\n\n                // We always store the camelCased key\n                dataUser.set(this, key, value);\n            });\n        }, null, value, arguments.length > 1, null, true);\n    },\n\n    removeData: function (key) {\n        return this.each(function () {\n            dataUser.remove(this, key);\n        });\n    }\n});\n\n\njQuery.extend({\n    queue: function (elem, type, data) {\n        var queue;\n\n        if (elem) {\n            type = (type || \"fx\") + \"queue\";\n            queue = dataPriv.get(elem, type);\n\n            // Speed up dequeue by getting out quickly if this is just a lookup\n            if (data) {\n                if (!queue || Array.isArray(data)) {\n                    queue = dataPriv.access(elem, type, jQuery.makeArray(data));\n                } else {\n                    queue.push(data);\n                }\n            }\n            return queue || [];\n        }\n    },\n\n    dequeue: function (elem, type) {\n        type = type || \"fx\";\n\n        var queue = jQuery.queue(elem, type),\n            startLength = queue.length,\n            fn = queue.shift(),\n            hooks = jQuery._queueHooks(elem, type),\n            next = function () {\n                jQuery.dequeue(elem, type);\n            };\n\n        // If the fx queue is dequeued, always remove the progress sentinel\n        if (fn === \"inprogress\") {\n            fn = queue.shift();\n            startLength--;\n        }\n\n        if (fn) {\n\n            // Add a progress sentinel to prevent the fx queue from being\n            // automatically dequeued\n            if (type === \"fx\") {\n                queue.unshift(\"inprogress\");\n            }\n\n            // Clear up the last queue stop function\n            delete hooks.stop;\n            fn.call(elem, next, hooks);\n        }\n\n        if (!startLength && hooks) {\n            hooks.empty.fire();\n        }\n    },\n\n    // Not public - generate a queueHooks object, or return the current one\n    _queueHooks: function (elem, type) {\n        var key = type + \"queueHooks\";\n        return dataPriv.get(elem, key) || dataPriv.access(elem, key, {\n            empty: jQuery.Callbacks(\"once memory\").add(function () {\n                dataPriv.remove(elem, [type + \"queue\", key]);\n            })\n        });\n    }\n});\n\njQuery.fn.extend({\n    queue: function (type, data) {\n        var setter = 2;\n\n        if (typeof type !== \"string\") {\n            data = type;\n            type = \"fx\";\n            setter--;\n        }\n\n        if (arguments.length < setter) {\n            return jQuery.queue(this[0], type);\n        }\n\n        return data === undefined ?\n            this :\n            this.each(function () {\n                var queue = jQuery.queue(this, type, data);\n\n                // Ensure a hooks for this queue\n                jQuery._queueHooks(this, type);\n\n                if (type === \"fx\" && queue[0] !== \"inprogress\") {\n                    jQuery.dequeue(this, type);\n                }\n            });\n    },\n    dequeue: function (type) {\n        return this.each(function () {\n            jQuery.dequeue(this, type);\n        });\n    },\n    clearQueue: function (type) {\n        return this.queue(type || \"fx\", []);\n    },\n\n    // Get a promise resolved when queues of a certain type\n    // are emptied (fx is the type by default)\n    promise: function (type, obj) {\n        var tmp,\n            count = 1,\n            defer = jQuery.Deferred(),\n            elements = this,\n            i = this.length,\n            resolve = function () {\n                if (!(--count)) {\n                    defer.resolveWith(elements, [elements]);\n                }\n            };\n\n        if (typeof type !== \"string\") {\n            obj = type;\n            type = undefined;\n        }\n        type = type || \"fx\";\n\n        while (i--) {\n            tmp = dataPriv.get(elements[i], type + \"queueHooks\");\n            if (tmp && tmp.empty) {\n                count++;\n                tmp.empty.add(resolve);\n            }\n        }\n        resolve();\n        return defer.promise(obj);\n    }\n});\nvar pnum = (/[+-]?(?:\\d*\\.|)\\d+(?:[eE][+-]?\\d+|)/).source;\n\nvar rcssNum = new RegExp(\"^(?:([+-])=|)(\" + pnum + \")([a-z%]*)$\", \"i\");\n\n\nvar cssExpand = [\"Top\", \"Right\", \"Bottom\", \"Left\"];\n\nvar isHiddenWithinTree = function (elem, el) {\n\n    // isHiddenWithinTree might be called from jQuery#filter function;\n    // in that case, element will be second argument\n    elem = el || elem;\n\n    // Inline style trumps all\n    return elem.style.display === \"none\" ||\n        elem.style.display === \"\" &&\n\n        // Otherwise, check computed style\n        // Support: Firefox <=43 - 45\n        // Disconnected elements can have computed display: none, so first confirm that elem is\n        // in the document.\n        jQuery.contains(elem.ownerDocument, elem) &&\n\n        jQuery.css(elem, \"display\") === \"none\";\n};\n\nvar swap = function (elem, options, callback, args) {\n    var ret, name,\n        old = {};\n\n    // Remember the old values, and insert the new ones\n    for (name in options) {\n        old[name] = elem.style[name];\n        elem.style[name] = options[name];\n    }\n\n    ret = callback.apply(elem, args || []);\n\n    // Revert the old values\n    for (name in options) {\n        elem.style[name] = old[name];\n    }\n\n    return ret;\n};\n\n\nfunction adjustCSS(elem, prop, valueParts, tween) {\n    var adjusted, scale,\n        maxIterations = 20,\n        currentValue = tween ?\n            function () {\n                return tween.cur();\n            } :\n            function () {\n                return jQuery.css(elem, prop, \"\");\n            },\n        initial = currentValue(),\n        unit = valueParts && valueParts[3] || (jQuery.cssNumber[prop] ? \"\" : \"px\"),\n\n        // Starting value computation is required for potential unit mismatches\n        initialInUnit = (jQuery.cssNumber[prop] || unit !== \"px\" && +initial) &&\n            rcssNum.exec(jQuery.css(elem, prop));\n\n    if (initialInUnit && initialInUnit[3] !== unit) {\n\n        // Support: Firefox <=54\n        // Halve the iteration target value to prevent interference from CSS upper bounds (gh-2144)\n        initial = initial / 2;\n\n        // Trust units reported by jQuery.css\n        unit = unit || initialInUnit[3];\n\n        // Iteratively approximate from a nonzero starting point\n        initialInUnit = +initial || 1;\n\n        while (maxIterations--) {\n\n            // Evaluate and update our best guess (doubling guesses that zero out).\n            // Finish if the scale equals or crosses 1 (making the old*new product non-positive).\n            jQuery.style(elem, prop, initialInUnit + unit);\n            if ((1 - scale) * (1 - (scale = currentValue() / initial || 0.5)) <= 0) {\n                maxIterations = 0;\n            }\n            initialInUnit = initialInUnit / scale;\n\n        }\n\n        initialInUnit = initialInUnit * 2;\n        jQuery.style(elem, prop, initialInUnit + unit);\n\n        // Make sure we update the tween properties later on\n        valueParts = valueParts || [];\n    }\n\n    if (valueParts) {\n        initialInUnit = +initialInUnit || +initial || 0;\n\n        // Apply relative offset (+=/-=) if specified\n        adjusted = valueParts[1] ?\n            initialInUnit + (valueParts[1] + 1) * valueParts[2] :\n            +valueParts[2];\n        if (tween) {\n            tween.unit = unit;\n            tween.start = initialInUnit;\n            tween.end = adjusted;\n        }\n    }\n    return adjusted;\n}\n\n\nvar defaultDisplayMap = {};\n\nfunction getDefaultDisplay(elem) {\n    var temp,\n        doc = elem.ownerDocument,\n        nodeName = elem.nodeName,\n        display = defaultDisplayMap[nodeName];\n\n    if (display) {\n        return display;\n    }\n\n    temp = doc.body.appendChild(doc.createElement(nodeName));\n    display = jQuery.css(temp, \"display\");\n\n    temp.parentNode.removeChild(temp);\n\n    if (display === \"none\") {\n        display = \"block\";\n    }\n    defaultDisplayMap[nodeName] = display;\n\n    return display;\n}\n\nfunction showHide(elements, show) {\n    var display, elem,\n        values = [],\n        index = 0,\n        length = elements.length;\n\n    // Determine new display value for elements that need to change\n    for (; index < length; index++) {\n        elem = elements[index];\n        if (!elem.style) {\n            continue;\n        }\n\n        display = elem.style.display;\n        if (show) {\n\n            // Since we force visibility upon cascade-hidden elements, an immediate (and slow)\n            // check is required in this first loop unless we have a nonempty display value (either\n            // inline or about-to-be-restored)\n            if (display === \"none\") {\n                values[index] = dataPriv.get(elem, \"display\") || null;\n                if (!values[index]) {\n                    elem.style.display = \"\";\n                }\n            }\n            if (elem.style.display === \"\" && isHiddenWithinTree(elem)) {\n                values[index] = getDefaultDisplay(elem);\n            }\n        } else {\n            if (display !== \"none\") {\n                values[index] = \"none\";\n\n                // Remember what we're overwriting\n                dataPriv.set(elem, \"display\", display);\n            }\n        }\n    }\n\n    // Set the display of the elements in a second loop to avoid constant reflow\n    for (index = 0; index < length; index++) {\n        if (values[index] != null) {\n            elements[index].style.display = values[index];\n        }\n    }\n\n    return elements;\n}\n\njQuery.fn.extend({\n    show: function () {\n        return showHide(this, true);\n    },\n    hide: function () {\n        return showHide(this);\n    },\n    toggle: function (state) {\n        if (typeof state === \"boolean\") {\n            return state ? this.show() : this.hide();\n        }\n\n        return this.each(function () {\n            if (isHiddenWithinTree(this)) {\n                jQuery(this).show();\n            } else {\n                jQuery(this).hide();\n            }\n        });\n    }\n});\nvar rcheckableType = (/^(?:checkbox|radio)$/i);\n\nvar rtagName = (/<([a-z][^\\/\\0>\\x20\\t\\r\\n\\f]+)/i);\n\nvar rscriptType = (/^$|^module$|\\/(?:java|ecma)script/i);\n\n\n// We have to close these tags to support XHTML (#13200)\nvar wrapMap = {\n\n    // Support: IE <=9 only\n    option: [1, \"<select multiple='multiple'>\", \"</select>\"],\n\n    // XHTML parsers do not magically insert elements in the\n    // same way that tag soup parsers do. So we cannot shorten\n    // this by omitting <tbody> or other required elements.\n    thead: [1, \"<table>\", \"</table>\"],\n    col: [2, \"<table><colgroup>\", \"</colgroup></table>\"],\n    tr: [2, \"<table><tbody>\", \"</tbody></table>\"],\n    td: [3, \"<table><tbody><tr>\", \"</tr></tbody></table>\"],\n\n    _default: [0, \"\", \"\"]\n};\n\n// Support: IE <=9 only\nwrapMap.optgroup = wrapMap.option;\n\nwrapMap.tbody = wrapMap.tfoot = wrapMap.colgroup = wrapMap.caption = wrapMap.thead;\nwrapMap.th = wrapMap.td;\n\n\nfunction getAll(context, tag) {\n\n    // Support: IE <=9 - 11 only\n    // Use typeof to avoid zero-argument method invocation on host objects (#15151)\n    var ret;\n\n    if (typeof context.getElementsByTagName !== \"undefined\") {\n        ret = context.getElementsByTagName(tag || \"*\");\n\n    } else if (typeof context.querySelectorAll !== \"undefined\") {\n        ret = context.querySelectorAll(tag || \"*\");\n\n    } else {\n        ret = [];\n    }\n\n    if (tag === undefined || tag && nodeName(context, tag)) {\n        return jQuery.merge([context], ret);\n    }\n\n    return ret;\n}\n\n\n// Mark scripts as having already been evaluated\nfunction setGlobalEval(elems, refElements) {\n    var i = 0,\n        l = elems.length;\n\n    for (; i < l; i++) {\n        dataPriv.set(\n            elems[i],\n            \"globalEval\",\n            !refElements || dataPriv.get(refElements[i], \"globalEval\")\n        );\n    }\n}\n\n\nvar rhtml = /<|&#?\\w+;/;\n\nfunction buildFragment(elems, context, scripts, selection, ignored) {\n    var elem, tmp, tag, wrap, contains, j,\n        fragment = context.createDocumentFragment(),\n        nodes = [],\n        i = 0,\n        l = elems.length;\n\n    for (; i < l; i++) {\n        elem = elems[i];\n\n        if (elem || elem === 0) {\n\n            // Add nodes directly\n            if (toType(elem) === \"object\") {\n\n                // Support: Android <=4.0 only, PhantomJS 1 only\n                // push.apply(_, arraylike) throws on ancient WebKit\n                jQuery.merge(nodes, elem.nodeType ? [elem] : elem);\n\n                // Convert non-html into a text node\n            } else if (!rhtml.test(elem)) {\n                nodes.push(context.createTextNode(elem));\n\n                // Convert html into DOM nodes\n            } else {\n                tmp = tmp || fragment.appendChild(context.createElement(\"div\"));\n\n                // Deserialize a standard representation\n                tag = (rtagName.exec(elem) || [\"\", \"\"])[1].toLowerCase();\n                wrap = wrapMap[tag] || wrapMap._default;\n                tmp.innerHTML = wrap[1] + jQuery.htmlPrefilter(elem) + wrap[2];\n\n                // Descend through wrappers to the right content\n                j = wrap[0];\n                while (j--) {\n                    tmp = tmp.lastChild;\n                }\n\n                // Support: Android <=4.0 only, PhantomJS 1 only\n                // push.apply(_, arraylike) throws on ancient WebKit\n                jQuery.merge(nodes, tmp.childNodes);\n\n                // Remember the top-level container\n                tmp = fragment.firstChild;\n\n                // Ensure the created nodes are orphaned (#12392)\n                tmp.textContent = \"\";\n            }\n        }\n    }\n\n    // Remove wrapper from fragment\n    fragment.textContent = \"\";\n\n    i = 0;\n    while ((elem = nodes[i++])) {\n\n        // Skip elements already in the context collection (trac-4087)\n        if (selection && jQuery.inArray(elem, selection) > -1) {\n            if (ignored) {\n                ignored.push(elem);\n            }\n            continue;\n        }\n\n        contains = jQuery.contains(elem.ownerDocument, elem);\n\n        // Append to fragment\n        tmp = getAll(fragment.appendChild(elem), \"script\");\n\n        // Preserve script evaluation history\n        if (contains) {\n            setGlobalEval(tmp);\n        }\n\n        // Capture executables\n        if (scripts) {\n            j = 0;\n            while ((elem = tmp[j++])) {\n                if (rscriptType.test(elem.type || \"\")) {\n                    scripts.push(elem);\n                }\n            }\n        }\n    }\n\n    return fragment;\n}\n\n\n(function () {\n    var fragment = document.createDocumentFragment(),\n        div = fragment.appendChild(document.createElement(\"div\")),\n        input = document.createElement(\"input\");\n\n    // Support: Android 4.0 - 4.3 only\n    // Check state lost if the name is set (#11217)\n    // Support: Windows Web Apps (WWA)\n    // `name` and `type` must use .setAttribute for WWA (#14901)\n    input.setAttribute(\"type\", \"radio\");\n    input.setAttribute(\"checked\", \"checked\");\n    input.setAttribute(\"name\", \"t\");\n\n    div.appendChild(input);\n\n    // Support: Android <=4.1 only\n    // Older WebKit doesn't clone checked state correctly in fragments\n    support.checkClone = div.cloneNode(true).cloneNode(true).lastChild.checked;\n\n    // Support: IE <=11 only\n    // Make sure textarea (and checkbox) defaultValue is properly cloned\n    div.innerHTML = \"<textarea>x</textarea>\";\n    support.noCloneChecked = !!div.cloneNode(true).lastChild.defaultValue;\n})();\nvar documentElement = document.documentElement;\n\n\nvar\n    rkeyEvent = /^key/,\n    rmouseEvent = /^(?:mouse|pointer|contextmenu|drag|drop)|click/,\n    rtypenamespace = /^([^.]*)(?:\\.(.+)|)/;\n\nfunction returnTrue() {\n    return true;\n}\n\nfunction returnFalse() {\n    return false;\n}\n\n// Support: IE <=9 only\n// See #13393 for more info\nfunction safeActiveElement() {\n    try {\n        return document.activeElement;\n    } catch (err) {\n    }\n}\n\nfunction on(elem, types, selector, data, fn, one) {\n    var origFn, type;\n\n    // Types can be a map of types/handlers\n    if (typeof types === \"object\") {\n\n        // ( types-Object, selector, data )\n        if (typeof selector !== \"string\") {\n\n            // ( types-Object, data )\n            data = data || selector;\n            selector = undefined;\n        }\n        for (type in types) {\n            on(elem, type, selector, data, types[type], one);\n        }\n        return elem;\n    }\n\n    if (data == null && fn == null) {\n\n        // ( types, fn )\n        fn = selector;\n        data = selector = undefined;\n    } else if (fn == null) {\n        if (typeof selector === \"string\") {\n\n            // ( types, selector, fn )\n            fn = data;\n            data = undefined;\n        } else {\n\n            // ( types, data, fn )\n            fn = data;\n            data = selector;\n            selector = undefined;\n        }\n    }\n    if (fn === false) {\n        fn = returnFalse;\n    } else if (!fn) {\n        return elem;\n    }\n\n    if (one === 1) {\n        origFn = fn;\n        fn = function (event) {\n\n            // Can use an empty set, since event contains the info\n            jQuery().off(event);\n            return origFn.apply(this, arguments);\n        };\n\n        // Use same guid so caller can remove using origFn\n        fn.guid = origFn.guid || (origFn.guid = jQuery.guid++);\n    }\n    return elem.each(function () {\n        jQuery.event.add(this, types, fn, data, selector);\n    });\n}\n\n/*\n * Helper functions for managing events -- not part of the public interface.\n * Props to Dean Edwards' addEvent library for many of the ideas.\n */\njQuery.event = {\n\n    global: {},\n\n    add: function (elem, types, handler, data, selector) {\n\n        var handleObjIn, eventHandle, tmp,\n            events, t, handleObj,\n            special, handlers, type, namespaces, origType,\n            elemData = dataPriv.get(elem);\n\n        // Don't attach events to noData or text/comment nodes (but allow plain objects)\n        if (!elemData) {\n            return;\n        }\n\n        // Caller can pass in an object of custom data in lieu of the handler\n        if (handler.handler) {\n            handleObjIn = handler;\n            handler = handleObjIn.handler;\n            selector = handleObjIn.selector;\n        }\n\n        // Ensure that invalid selectors throw exceptions at attach time\n        // Evaluate against documentElement in case elem is a non-element node (e.g., document)\n        if (selector) {\n            jQuery.find.matchesSelector(documentElement, selector);\n        }\n\n        // Make sure that the handler has a unique ID, used to find/remove it later\n        if (!handler.guid) {\n            handler.guid = jQuery.guid++;\n        }\n\n        // Init the element's event structure and main handler, if this is the first\n        if (!(events = elemData.events)) {\n            events = elemData.events = {};\n        }\n        if (!(eventHandle = elemData.handle)) {\n            eventHandle = elemData.handle = function (e) {\n\n                // Discard the second event of a jQuery.event.trigger() and\n                // when an event is called after a page has unloaded\n                return typeof jQuery !== \"undefined\" && jQuery.event.triggered !== e.type ?\n                    jQuery.event.dispatch.apply(elem, arguments) : undefined;\n            };\n        }\n\n        // Handle multiple events separated by a space\n        types = (types || \"\").match(rnothtmlwhite) || [\"\"];\n        t = types.length;\n        while (t--) {\n            tmp = rtypenamespace.exec(types[t]) || [];\n            type = origType = tmp[1];\n            namespaces = (tmp[2] || \"\").split(\".\").sort();\n\n            // There *must* be a type, no attaching namespace-only handlers\n            if (!type) {\n                continue;\n            }\n\n            // If event changes its type, use the special event handlers for the changed type\n            special = jQuery.event.special[type] || {};\n\n            // If selector defined, determine special event api type, otherwise given type\n            type = (selector ? special.delegateType : special.bindType) || type;\n\n            // Update special based on newly reset type\n            special = jQuery.event.special[type] || {};\n\n            // handleObj is passed to all event handlers\n            handleObj = jQuery.extend({\n                type: type,\n                origType: origType,\n                data: data,\n                handler: handler,\n                guid: handler.guid,\n                selector: selector,\n                needsContext: selector && jQuery.expr.match.needsContext.test(selector),\n                namespace: namespaces.join(\".\")\n            }, handleObjIn);\n\n            // Init the event handler queue if we're the first\n            if (!(handlers = events[type])) {\n                handlers = events[type] = [];\n                handlers.delegateCount = 0;\n\n                // Only use addEventListener if the special events handler returns false\n                if (!special.setup ||\n                    special.setup.call(elem, data, namespaces, eventHandle) === false) {\n\n                    if (elem.addEventListener) {\n                        elem.addEventListener(type, eventHandle);\n                    }\n                }\n            }\n\n            if (special.add) {\n                special.add.call(elem, handleObj);\n\n                if (!handleObj.handler.guid) {\n                    handleObj.handler.guid = handler.guid;\n                }\n            }\n\n            // Add to the element's handler list, delegates in front\n            if (selector) {\n                handlers.splice(handlers.delegateCount++, 0, handleObj);\n            } else {\n                handlers.push(handleObj);\n            }\n\n            // Keep track of which events have ever been used, for event optimization\n            jQuery.event.global[type] = true;\n        }\n\n    },\n\n    // Detach an event or set of events from an element\n    remove: function (elem, types, handler, selector, mappedTypes) {\n\n        var j, origCount, tmp,\n            events, t, handleObj,\n            special, handlers, type, namespaces, origType,\n            elemData = dataPriv.hasData(elem) && dataPriv.get(elem);\n\n        if (!elemData || !(events = elemData.events)) {\n            return;\n        }\n\n        // Once for each type.namespace in types; type may be omitted\n        types = (types || \"\").match(rnothtmlwhite) || [\"\"];\n        t = types.length;\n        while (t--) {\n            tmp = rtypenamespace.exec(types[t]) || [];\n            type = origType = tmp[1];\n            namespaces = (tmp[2] || \"\").split(\".\").sort();\n\n            // Unbind all events (on this namespace, if provided) for the element\n            if (!type) {\n                for (type in events) {\n                    jQuery.event.remove(elem, type + types[t], handler, selector, true);\n                }\n                continue;\n            }\n\n            special = jQuery.event.special[type] || {};\n            type = (selector ? special.delegateType : special.bindType) || type;\n            handlers = events[type] || [];\n            tmp = tmp[2] &&\n                new RegExp(\"(^|\\\\.)\" + namespaces.join(\"\\\\.(?:.*\\\\.|)\") + \"(\\\\.|$)\");\n\n            // Remove matching events\n            origCount = j = handlers.length;\n            while (j--) {\n                handleObj = handlers[j];\n\n                if ((mappedTypes || origType === handleObj.origType) &&\n                    (!handler || handler.guid === handleObj.guid) &&\n                    (!tmp || tmp.test(handleObj.namespace)) &&\n                    (!selector || selector === handleObj.selector ||\n                        selector === \"**\" && handleObj.selector)) {\n                    handlers.splice(j, 1);\n\n                    if (handleObj.selector) {\n                        handlers.delegateCount--;\n                    }\n                    if (special.remove) {\n                        special.remove.call(elem, handleObj);\n                    }\n                }\n            }\n\n            // Remove generic event handler if we removed something and no more handlers exist\n            // (avoids potential for endless recursion during removal of special event handlers)\n            if (origCount && !handlers.length) {\n                if (!special.teardown ||\n                    special.teardown.call(elem, namespaces, elemData.handle) === false) {\n\n                    jQuery.removeEvent(elem, type, elemData.handle);\n                }\n\n                delete events[type];\n            }\n        }\n\n        // Remove data and the expando if it's no longer used\n        if (jQuery.isEmptyObject(events)) {\n            dataPriv.remove(elem, \"handle events\");\n        }\n    },\n\n    dispatch: function (nativeEvent) {\n\n        // Make a writable jQuery.Event from the native event object\n        var event = jQuery.event.fix(nativeEvent);\n\n        var i, j, ret, matched, handleObj, handlerQueue,\n            args = new Array(arguments.length),\n            handlers = (dataPriv.get(this, \"events\") || {})[event.type] || [],\n            special = jQuery.event.special[event.type] || {};\n\n        // Use the fix-ed jQuery.Event rather than the (read-only) native event\n        args[0] = event;\n\n        for (i = 1; i < arguments.length; i++) {\n            args[i] = arguments[i];\n        }\n\n        event.delegateTarget = this;\n\n        // Call the preDispatch hook for the mapped type, and let it bail if desired\n        if (special.preDispatch && special.preDispatch.call(this, event) === false) {\n            return;\n        }\n\n        // Determine handlers\n        handlerQueue = jQuery.event.handlers.call(this, event, handlers);\n\n        // Run delegates first; they may want to stop propagation beneath us\n        i = 0;\n        while ((matched = handlerQueue[i++]) && !event.isPropagationStopped()) {\n            event.currentTarget = matched.elem;\n\n            j = 0;\n            while ((handleObj = matched.handlers[j++]) &&\n            !event.isImmediatePropagationStopped()) {\n\n                // Triggered event must either 1) have no namespace, or 2) have namespace(s)\n                // a subset or equal to those in the bound event (both can have no namespace).\n                if (!event.rnamespace || event.rnamespace.test(handleObj.namespace)) {\n\n                    event.handleObj = handleObj;\n                    event.data = handleObj.data;\n\n                    ret = ((jQuery.event.special[handleObj.origType] || {}).handle ||\n                        handleObj.handler).apply(matched.elem, args);\n\n                    if (ret !== undefined) {\n                        if ((event.result = ret) === false) {\n                            event.preventDefault();\n                            event.stopPropagation();\n                        }\n                    }\n                }\n            }\n        }\n\n        // Call the postDispatch hook for the mapped type\n        if (special.postDispatch) {\n            special.postDispatch.call(this, event);\n        }\n\n        return event.result;\n    },\n\n    handlers: function (event, handlers) {\n        var i, handleObj, sel, matchedHandlers, matchedSelectors,\n            handlerQueue = [],\n            delegateCount = handlers.delegateCount,\n            cur = event.target;\n\n        // Find delegate handlers\n        if (delegateCount &&\n\n            // Support: IE <=9\n            // Black-hole SVG <use> instance trees (trac-13180)\n            cur.nodeType &&\n\n            // Support: Firefox <=42\n            // Suppress spec-violating clicks indicating a non-primary pointer button (trac-3861)\n            // https://www.w3.org/TR/DOM-Level-3-Events/#event-type-click\n            // Support: IE 11 only\n            // ...but not arrow key \"clicks\" of radio inputs, which can have `button` -1 (gh-2343)\n            !(event.type === \"click\" && event.button >= 1)) {\n\n            for (; cur !== this; cur = cur.parentNode || this) {\n\n                // Don't check non-elements (#13208)\n                // Don't process clicks on disabled elements (#6911, #8165, #11382, #11764)\n                if (cur.nodeType === 1 && !(event.type === \"click\" && cur.disabled === true)) {\n                    matchedHandlers = [];\n                    matchedSelectors = {};\n                    for (i = 0; i < delegateCount; i++) {\n                        handleObj = handlers[i];\n\n                        // Don't conflict with Object.prototype properties (#13203)\n                        sel = handleObj.selector + \" \";\n\n                        if (matchedSelectors[sel] === undefined) {\n                            matchedSelectors[sel] = handleObj.needsContext ?\n                                jQuery(sel, this).index(cur) > -1 :\n                                jQuery.find(sel, this, null, [cur]).length;\n                        }\n                        if (matchedSelectors[sel]) {\n                            matchedHandlers.push(handleObj);\n                        }\n                    }\n                    if (matchedHandlers.length) {\n                        handlerQueue.push({elem: cur, handlers: matchedHandlers});\n                    }\n                }\n            }\n        }\n\n        // Add the remaining (directly-bound) handlers\n        cur = this;\n        if (delegateCount < handlers.length) {\n            handlerQueue.push({elem: cur, handlers: handlers.slice(delegateCount)});\n        }\n\n        return handlerQueue;\n    },\n\n    addProp: function (name, hook) {\n        Object.defineProperty(jQuery.Event.prototype, name, {\n            enumerable: true,\n            configurable: true,\n\n            get: isFunction(hook) ?\n                function () {\n                    if (this.originalEvent) {\n                        return hook(this.originalEvent);\n                    }\n                } :\n                function () {\n                    if (this.originalEvent) {\n                        return this.originalEvent[name];\n                    }\n                },\n\n            set: function (value) {\n                Object.defineProperty(this, name, {\n                    enumerable: true,\n                    configurable: true,\n                    writable: true,\n                    value: value\n                });\n            }\n        });\n    },\n\n    fix: function (originalEvent) {\n        return originalEvent[jQuery.expando] ?\n            originalEvent :\n            new jQuery.Event(originalEvent);\n    },\n\n    special: {\n        load: {\n\n            // Prevent triggered image.load events from bubbling to window.load\n            noBubble: true\n        },\n        focus: {\n\n            // Fire native event if possible so blur/focus sequence is correct\n            trigger: function () {\n                if (this !== safeActiveElement() && this.focus) {\n                    this.focus();\n                    return false;\n                }\n            },\n            delegateType: \"focusin\"\n        },\n        blur: {\n            trigger: function () {\n                if (this === safeActiveElement() && this.blur) {\n                    this.blur();\n                    return false;\n                }\n            },\n            delegateType: \"focusout\"\n        },\n        click: {\n\n            // For checkbox, fire native event so checked state will be right\n            trigger: function () {\n                if (this.type === \"checkbox\" && this.click && nodeName(this, \"input\")) {\n                    this.click();\n                    return false;\n                }\n            },\n\n            // For cross-browser consistency, don't fire native .click() on links\n            _default: function (event) {\n                return nodeName(event.target, \"a\");\n            }\n        },\n\n        beforeunload: {\n            postDispatch: function (event) {\n\n                // Support: Firefox 20+\n                // Firefox doesn't alert if the returnValue field is not set.\n                if (event.result !== undefined && event.originalEvent) {\n                    event.originalEvent.returnValue = event.result;\n                }\n            }\n        }\n    }\n};\n\njQuery.removeEvent = function (elem, type, handle) {\n\n    // This \"if\" is needed for plain objects\n    if (elem.removeEventListener) {\n        elem.removeEventListener(type, handle);\n    }\n};\n\njQuery.Event = function (src, props) {\n\n    // Allow instantiation without the 'new' keyword\n    if (!(this instanceof jQuery.Event)) {\n        return new jQuery.Event(src, props);\n    }\n\n    // Event object\n    if (src && src.type) {\n        this.originalEvent = src;\n        this.type = src.type;\n\n        // Events bubbling up the document may have been marked as prevented\n        // by a handler lower down the tree; reflect the correct value.\n        this.isDefaultPrevented = src.defaultPrevented ||\n        src.defaultPrevented === undefined &&\n\n        // Support: Android <=2.3 only\n        src.returnValue === false ?\n            returnTrue :\n            returnFalse;\n\n        // Create target properties\n        // Support: Safari <=6 - 7 only\n        // Target should not be a text node (#504, #13143)\n        this.target = (src.target && src.target.nodeType === 3) ?\n            src.target.parentNode :\n            src.target;\n\n        this.currentTarget = src.currentTarget;\n        this.relatedTarget = src.relatedTarget;\n\n        // Event type\n    } else {\n        this.type = src;\n    }\n\n    // Put explicitly provided properties onto the event object\n    if (props) {\n        jQuery.extend(this, props);\n    }\n\n    // Create a timestamp if incoming event doesn't have one\n    this.timeStamp = src && src.timeStamp || Date.now();\n\n    // Mark it as fixed\n    this[jQuery.expando] = true;\n};\n\n// jQuery.Event is based on DOM3 Events as specified by the ECMAScript Language Binding\n// https://www.w3.org/TR/2003/WD-DOM-Level-3-Events-20030331/ecma-script-binding.html\njQuery.Event.prototype = {\n    constructor: jQuery.Event,\n    isDefaultPrevented: returnFalse,\n    isPropagationStopped: returnFalse,\n    isImmediatePropagationStopped: returnFalse,\n    isSimulated: false,\n\n    preventDefault: function () {\n        var e = this.originalEvent;\n\n        this.isDefaultPrevented = returnTrue;\n\n        if (e && !this.isSimulated) {\n            e.preventDefault();\n        }\n    },\n    stopPropagation: function () {\n        var e = this.originalEvent;\n\n        this.isPropagationStopped = returnTrue;\n\n        if (e && !this.isSimulated) {\n            e.stopPropagation();\n        }\n    },\n    stopImmediatePropagation: function () {\n        var e = this.originalEvent;\n\n        this.isImmediatePropagationStopped = returnTrue;\n\n        if (e && !this.isSimulated) {\n            e.stopImmediatePropagation();\n        }\n\n        this.stopPropagation();\n    }\n};\n\n// Includes all common event props including KeyEvent and MouseEvent specific props\njQuery.each({\n    altKey: true,\n    bubbles: true,\n    cancelable: true,\n    changedTouches: true,\n    ctrlKey: true,\n    detail: true,\n    eventPhase: true,\n    metaKey: true,\n    pageX: true,\n    pageY: true,\n    shiftKey: true,\n    view: true,\n    \"char\": true,\n    charCode: true,\n    key: true,\n    keyCode: true,\n    button: true,\n    buttons: true,\n    clientX: true,\n    clientY: true,\n    offsetX: true,\n    offsetY: true,\n    pointerId: true,\n    pointerType: true,\n    screenX: true,\n    screenY: true,\n    targetTouches: true,\n    toElement: true,\n    touches: true,\n\n    which: function (event) {\n        var button = event.button;\n\n        // Add which for key events\n        if (event.which == null && rkeyEvent.test(event.type)) {\n            return event.charCode != null ? event.charCode : event.keyCode;\n        }\n\n        // Add which for click: 1 === left; 2 === middle; 3 === right\n        if (!event.which && button !== undefined && rmouseEvent.test(event.type)) {\n            if (button & 1) {\n                return 1;\n            }\n\n            if (button & 2) {\n                return 3;\n            }\n\n            if (button & 4) {\n                return 2;\n            }\n\n            return 0;\n        }\n\n        return event.which;\n    }\n}, jQuery.event.addProp);\n\n// Create mouseenter/leave events using mouseover/out and event-time checks\n// so that event delegation works in jQuery.\n// Do the same for pointerenter/pointerleave and pointerover/pointerout\n//\n// Support: Safari 7 only\n// Safari sends mouseenter too often; see:\n// https://bugs.chromium.org/p/chromium/issues/detail?id=470258\n// for the description of the bug (it existed in older Chrome versions as well).\njQuery.each({\n    mouseenter: \"mouseover\",\n    mouseleave: \"mouseout\",\n    pointerenter: \"pointerover\",\n    pointerleave: \"pointerout\"\n}, function (orig, fix) {\n    jQuery.event.special[orig] = {\n        delegateType: fix,\n        bindType: fix,\n\n        handle: function (event) {\n            var ret,\n                target = this,\n                related = event.relatedTarget,\n                handleObj = event.handleObj;\n\n            // For mouseenter/leave call the handler if related is outside the target.\n            // NB: No relatedTarget if the mouse left/entered the browser window\n            if (!related || (related !== target && !jQuery.contains(target, related))) {\n                event.type = handleObj.origType;\n                ret = handleObj.handler.apply(this, arguments);\n                event.type = fix;\n            }\n            return ret;\n        }\n    };\n});\n\njQuery.fn.extend({\n\n    on: function (types, selector, data, fn) {\n        return on(this, types, selector, data, fn);\n    },\n    one: function (types, selector, data, fn) {\n        return on(this, types, selector, data, fn, 1);\n    },\n    off: function (types, selector, fn) {\n        var handleObj, type;\n        if (types && types.preventDefault && types.handleObj) {\n\n            // ( event )  dispatched jQuery.Event\n            handleObj = types.handleObj;\n            jQuery(types.delegateTarget).off(\n                handleObj.namespace ?\n                    handleObj.origType + \".\" + handleObj.namespace :\n                    handleObj.origType,\n                handleObj.selector,\n                handleObj.handler\n            );\n            return this;\n        }\n        if (typeof types === \"object\") {\n\n            // ( types-object [, selector] )\n            for (type in types) {\n                this.off(type, selector, types[type]);\n            }\n            return this;\n        }\n        if (selector === false || typeof selector === \"function\") {\n\n            // ( types [, fn] )\n            fn = selector;\n            selector = undefined;\n        }\n        if (fn === false) {\n            fn = returnFalse;\n        }\n        return this.each(function () {\n            jQuery.event.remove(this, types, fn, selector);\n        });\n    }\n});\n\n\nvar\n\n    /* eslint-disable max-len */\n\n    // See https://github.com/eslint/eslint/issues/3229\n    rxhtmlTag = /<(?!area|br|col|embed|hr|img|input|link|meta|param)(([a-z][^\\/\\0>\\x20\\t\\r\\n\\f]*)[^>]*)\\/>/gi,\n\n    /* eslint-enable */\n\n    // Support: IE <=10 - 11, Edge 12 - 13 only\n    // In IE/Edge using regex groups here causes severe slowdowns.\n    // See https://connect.microsoft.com/IE/feedback/details/1736512/\n    rnoInnerhtml = /<script|<style|<link/i,\n\n    // checked=\"checked\" or checked\n    rchecked = /checked\\s*(?:[^=]|=\\s*.checked.)/i,\n    rcleanScript = /^\\s*<!(?:\\[CDATA\\[|--)|(?:\\]\\]|--)>\\s*$/g;\n\n// Prefer a tbody over its parent table for containing new rows\nfunction manipulationTarget(elem, content) {\n    if (nodeName(elem, \"table\") &&\n        nodeName(content.nodeType !== 11 ? content : content.firstChild, \"tr\")) {\n\n        return jQuery(elem).children(\"tbody\")[0] || elem;\n    }\n\n    return elem;\n}\n\n// Replace/restore the type attribute of script elements for safe DOM manipulation\nfunction disableScript(elem) {\n    elem.type = (elem.getAttribute(\"type\") !== null) + \"/\" + elem.type;\n    return elem;\n}\n\nfunction restoreScript(elem) {\n    if ((elem.type || \"\").slice(0, 5) === \"true/\") {\n        elem.type = elem.type.slice(5);\n    } else {\n        elem.removeAttribute(\"type\");\n    }\n\n    return elem;\n}\n\nfunction cloneCopyEvent(src, dest) {\n    var i, l, type, pdataOld, pdataCur, udataOld, udataCur, events;\n\n    if (dest.nodeType !== 1) {\n        return;\n    }\n\n    // 1. Copy private data: events, handlers, etc.\n    if (dataPriv.hasData(src)) {\n        pdataOld = dataPriv.access(src);\n        pdataCur = dataPriv.set(dest, pdataOld);\n        events = pdataOld.events;\n\n        if (events) {\n            delete pdataCur.handle;\n            pdataCur.events = {};\n\n            for (type in events) {\n                for (i = 0, l = events[type].length; i < l; i++) {\n                    jQuery.event.add(dest, type, events[type][i]);\n                }\n            }\n        }\n    }\n\n    // 2. Copy user data\n    if (dataUser.hasData(src)) {\n        udataOld = dataUser.access(src);\n        udataCur = jQuery.extend({}, udataOld);\n\n        dataUser.set(dest, udataCur);\n    }\n}\n\n// Fix IE bugs, see support tests\nfunction fixInput(src, dest) {\n    var nodeName = dest.nodeName.toLowerCase();\n\n    // Fails to persist the checked state of a cloned checkbox or radio button.\n    if (nodeName === \"input\" && rcheckableType.test(src.type)) {\n        dest.checked = src.checked;\n\n        // Fails to return the selected option to the default selected state when cloning options\n    } else if (nodeName === \"input\" || nodeName === \"textarea\") {\n        dest.defaultValue = src.defaultValue;\n    }\n}\n\nfunction domManip(collection, args, callback, ignored) {\n\n    // Flatten any nested arrays\n    args = concat.apply([], args);\n\n    var fragment, first, scripts, hasScripts, node, doc,\n        i = 0,\n        l = collection.length,\n        iNoClone = l - 1,\n        value = args[0],\n        valueIsFunction = isFunction(value);\n\n    // We can't cloneNode fragments that contain checked, in WebKit\n    if (valueIsFunction ||\n        (l > 1 && typeof value === \"string\" &&\n            !support.checkClone && rchecked.test(value))) {\n        return collection.each(function (index) {\n            var self = collection.eq(index);\n            if (valueIsFunction) {\n                args[0] = value.call(this, index, self.html());\n            }\n            domManip(self, args, callback, ignored);\n        });\n    }\n\n    if (l) {\n        fragment = buildFragment(args, collection[0].ownerDocument, false, collection, ignored);\n        first = fragment.firstChild;\n\n        if (fragment.childNodes.length === 1) {\n            fragment = first;\n        }\n\n        // Require either new content or an interest in ignored elements to invoke the callback\n        if (first || ignored) {\n            scripts = jQuery.map(getAll(fragment, \"script\"), disableScript);\n            hasScripts = scripts.length;\n\n            // Use the original fragment for the last item\n            // instead of the first because it can end up\n            // being emptied incorrectly in certain situations (#8070).\n            for (; i < l; i++) {\n                node = fragment;\n\n                if (i !== iNoClone) {\n                    node = jQuery.clone(node, true, true);\n\n                    // Keep references to cloned scripts for later restoration\n                    if (hasScripts) {\n\n                        // Support: Android <=4.0 only, PhantomJS 1 only\n                        // push.apply(_, arraylike) throws on ancient WebKit\n                        jQuery.merge(scripts, getAll(node, \"script\"));\n                    }\n                }\n\n                callback.call(collection[i], node, i);\n            }\n\n            if (hasScripts) {\n                doc = scripts[scripts.length - 1].ownerDocument;\n\n                // Reenable scripts\n                jQuery.map(scripts, restoreScript);\n\n                // Evaluate executable scripts on first document insertion\n                for (i = 0; i < hasScripts; i++) {\n                    node = scripts[i];\n                    if (rscriptType.test(node.type || \"\") &&\n                        !dataPriv.access(node, \"globalEval\") &&\n                        jQuery.contains(doc, node)) {\n\n                        if (node.src && (node.type || \"\").toLowerCase() !== \"module\") {\n\n                            // Optional AJAX dependency, but won't run scripts if not present\n                            if (jQuery._evalUrl) {\n                                jQuery._evalUrl(node.src);\n                            }\n                        } else {\n                            DOMEval(node.textContent.replace(rcleanScript, \"\"), doc, node);\n                        }\n                    }\n                }\n            }\n        }\n    }\n\n    return collection;\n}\n\nfunction remove(elem, selector, keepData) {\n    var node,\n        nodes = selector ? jQuery.filter(selector, elem) : elem,\n        i = 0;\n\n    for (; (node = nodes[i]) != null; i++) {\n        if (!keepData && node.nodeType === 1) {\n            jQuery.cleanData(getAll(node));\n        }\n\n        if (node.parentNode) {\n            if (keepData && jQuery.contains(node.ownerDocument, node)) {\n                setGlobalEval(getAll(node, \"script\"));\n            }\n            node.parentNode.removeChild(node);\n        }\n    }\n\n    return elem;\n}\n\njQuery.extend({\n    htmlPrefilter: function (html) {\n        return html.replace(rxhtmlTag, \"<$1></$2>\");\n    },\n\n    clone: function (elem, dataAndEvents, deepDataAndEvents) {\n        var i, l, srcElements, destElements,\n            clone = elem.cloneNode(true),\n            inPage = jQuery.contains(elem.ownerDocument, elem);\n\n        // Fix IE cloning issues\n        if (!support.noCloneChecked && (elem.nodeType === 1 || elem.nodeType === 11) &&\n            !jQuery.isXMLDoc(elem)) {\n\n            // We eschew Sizzle here for performance reasons: https://jsperf.com/getall-vs-sizzle/2\n            destElements = getAll(clone);\n            srcElements = getAll(elem);\n\n            for (i = 0, l = srcElements.length; i < l; i++) {\n                fixInput(srcElements[i], destElements[i]);\n            }\n        }\n\n        // Copy the events from the original to the clone\n        if (dataAndEvents) {\n            if (deepDataAndEvents) {\n                srcElements = srcElements || getAll(elem);\n                destElements = destElements || getAll(clone);\n\n                for (i = 0, l = srcElements.length; i < l; i++) {\n                    cloneCopyEvent(srcElements[i], destElements[i]);\n                }\n            } else {\n                cloneCopyEvent(elem, clone);\n            }\n        }\n\n        // Preserve script evaluation history\n        destElements = getAll(clone, \"script\");\n        if (destElements.length > 0) {\n            setGlobalEval(destElements, !inPage && getAll(elem, \"script\"));\n        }\n\n        // Return the cloned set\n        return clone;\n    },\n\n    cleanData: function (elems) {\n        var data, elem, type,\n            special = jQuery.event.special,\n            i = 0;\n\n        for (; (elem = elems[i]) !== undefined; i++) {\n            if (acceptData(elem)) {\n                if ((data = elem[dataPriv.expando])) {\n                    if (data.events) {\n                        for (type in data.events) {\n                            if (special[type]) {\n                                jQuery.event.remove(elem, type);\n\n                                // This is a shortcut to avoid jQuery.event.remove's overhead\n                            } else {\n                                jQuery.removeEvent(elem, type, data.handle);\n                            }\n                        }\n                    }\n\n                    // Support: Chrome <=35 - 45+\n                    // Assign undefined instead of using delete, see Data#remove\n                    elem[dataPriv.expando] = undefined;\n                }\n                if (elem[dataUser.expando]) {\n\n                    // Support: Chrome <=35 - 45+\n                    // Assign undefined instead of using delete, see Data#remove\n                    elem[dataUser.expando] = undefined;\n                }\n            }\n        }\n    }\n});\n\njQuery.fn.extend({\n    detach: function (selector) {\n        return remove(this, selector, true);\n    },\n\n    remove: function (selector) {\n        return remove(this, selector);\n    },\n\n    text: function (value) {\n        return access(this, function (value) {\n            return value === undefined ?\n                jQuery.text(this) :\n                this.empty().each(function () {\n                    if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) {\n                        this.textContent = value;\n                    }\n                });\n        }, null, value, arguments.length);\n    },\n\n    append: function () {\n        return domManip(this, arguments, function (elem) {\n            if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) {\n                var target = manipulationTarget(this, elem);\n                target.appendChild(elem);\n            }\n        });\n    },\n\n    prepend: function () {\n        return domManip(this, arguments, function (elem) {\n            if (this.nodeType === 1 || this.nodeType === 11 || this.nodeType === 9) {\n                var target = manipulationTarget(this, elem);\n                target.insertBefore(elem, target.firstChild);\n            }\n        });\n    },\n\n    before: function () {\n        return domManip(this, arguments, function (elem) {\n            if (this.parentNode) {\n                this.parentNode.insertBefore(elem, this);\n            }\n        });\n    },\n\n    after: function () {\n        return domManip(this, arguments, function (elem) {\n            if (this.parentNode) {\n                this.parentNode.insertBefore(elem, this.nextSibling);\n            }\n        });\n    },\n\n    empty: function () {\n        var elem,\n            i = 0;\n\n        for (; (elem = this[i]) != null; i++) {\n            if (elem.nodeType === 1) {\n\n                // Prevent memory leaks\n                jQuery.cleanData(getAll(elem, false));\n\n                // Remove any remaining nodes\n                elem.textContent = \"\";\n            }\n        }\n\n        return this;\n    },\n\n    clone: function (dataAndEvents, deepDataAndEvents) {\n        dataAndEvents = dataAndEvents == null ? false : dataAndEvents;\n        deepDataAndEvents = deepDataAndEvents == null ? dataAndEvents : deepDataAndEvents;\n\n        return this.map(function () {\n            return jQuery.clone(this, dataAndEvents, deepDataAndEvents);\n        });\n    },\n\n    html: function (value) {\n        return access(this, function (value) {\n            var elem = this[0] || {},\n                i = 0,\n                l = this.length;\n\n            if (value === undefined && elem.nodeType === 1) {\n                return elem.innerHTML;\n            }\n\n            // See if we can take a shortcut and just use innerHTML\n            if (typeof value === \"string\" && !rnoInnerhtml.test(value) &&\n                !wrapMap[(rtagName.exec(value) || [\"\", \"\"])[1].toLowerCase()]) {\n\n                value = jQuery.htmlPrefilter(value);\n\n                try {\n                    for (; i < l; i++) {\n                        elem = this[i] || {};\n\n                        // Remove element nodes and prevent memory leaks\n                        if (elem.nodeType === 1) {\n                            jQuery.cleanData(getAll(elem, false));\n                            elem.innerHTML = value;\n                        }\n                    }\n\n                    elem = 0;\n\n                    // If using innerHTML throws an exception, use the fallback method\n                } catch (e) {\n                }\n            }\n\n            if (elem) {\n                this.empty().append(value);\n            }\n        }, null, value, arguments.length);\n    },\n\n    replaceWith: function () {\n        var ignored = [];\n\n        // Make the changes, replacing each non-ignored context element with the new content\n        return domManip(this, arguments, function (elem) {\n            var parent = this.parentNode;\n\n            if (jQuery.inArray(this, ignored) < 0) {\n                jQuery.cleanData(getAll(this));\n                if (parent) {\n                    parent.replaceChild(elem, this);\n                }\n            }\n\n            // Force callback invocation\n        }, ignored);\n    }\n});\n\njQuery.each({\n    appendTo: \"append\",\n    prependTo: \"prepend\",\n    insertBefore: \"before\",\n    insertAfter: \"after\",\n    replaceAll: \"replaceWith\"\n}, function (name, original) {\n    jQuery.fn[name] = function (selector) {\n        var elems,\n            ret = [],\n            insert = jQuery(selector),\n            last = insert.length - 1,\n            i = 0;\n\n        for (; i <= last; i++) {\n            elems = i === last ? this : this.clone(true);\n            jQuery(insert[i])[original](elems);\n\n            // Support: Android <=4.0 only, PhantomJS 1 only\n            // .get() because push.apply(_, arraylike) throws on ancient WebKit\n            push.apply(ret, elems.get());\n        }\n\n        return this.pushStack(ret);\n    };\n});\nvar rnumnonpx = new RegExp(\"^(\" + pnum + \")(?!px)[a-z%]+$\", \"i\");\n\nvar getStyles = function (elem) {\n\n    // Support: IE <=11 only, Firefox <=30 (#15098, #14150)\n    // IE throws on elements created in popups\n    // FF meanwhile throws on frame elements through \"defaultView.getComputedStyle\"\n    var view = elem.ownerDocument.defaultView;\n\n    if (!view || !view.opener) {\n        view = window;\n    }\n\n    return view.getComputedStyle(elem);\n};\n\nvar rboxStyle = new RegExp(cssExpand.join(\"|\"), \"i\");\n\n\n(function () {\n\n    // Executing both pixelPosition & boxSizingReliable tests require only one layout\n    // so they're executed at the same time to save the second computation.\n    function computeStyleTests() {\n\n        // This is a singleton, we need to execute it only once\n        if (!div) {\n            return;\n        }\n\n        container.style.cssText = \"position:absolute;left:-11111px;width:60px;\" +\n            \"margin-top:1px;padding:0;border:0\";\n        div.style.cssText =\n            \"position:relative;display:block;box-sizing:border-box;overflow:scroll;\" +\n            \"margin:auto;border:1px;padding:1px;\" +\n            \"width:60%;top:1%\";\n        documentElement.appendChild(container).appendChild(div);\n\n        var divStyle = window.getComputedStyle(div);\n        pixelPositionVal = divStyle.top !== \"1%\";\n\n        // Support: Android 4.0 - 4.3 only, Firefox <=3 - 44\n        reliableMarginLeftVal = roundPixelMeasures(divStyle.marginLeft) === 12;\n\n        // Support: Android 4.0 - 4.3 only, Safari <=9.1 - 10.1, iOS <=7.0 - 9.3\n        // Some styles come back with percentage values, even though they shouldn't\n        div.style.right = \"60%\";\n        pixelBoxStylesVal = roundPixelMeasures(divStyle.right) === 36;\n\n        // Support: IE 9 - 11 only\n        // Detect misreporting of content dimensions for box-sizing:border-box elements\n        boxSizingReliableVal = roundPixelMeasures(divStyle.width) === 36;\n\n        // Support: IE 9 only\n        // Detect overflow:scroll screwiness (gh-3699)\n        div.style.position = \"absolute\";\n        scrollboxSizeVal = div.offsetWidth === 36 || \"absolute\";\n\n        documentElement.removeChild(container);\n\n        // Nullify the div so it wouldn't be stored in the memory and\n        // it will also be a sign that checks already performed\n        div = null;\n    }\n\n    function roundPixelMeasures(measure) {\n        return Math.round(parseFloat(measure));\n    }\n\n    var pixelPositionVal, boxSizingReliableVal, scrollboxSizeVal, pixelBoxStylesVal,\n        reliableMarginLeftVal,\n        container = document.createElement(\"div\"),\n        div = document.createElement(\"div\");\n\n    // Finish early in limited (non-browser) environments\n    if (!div.style) {\n        return;\n    }\n\n    // Support: IE <=9 - 11 only\n    // Style of cloned element affects source element cloned (#8908)\n    div.style.backgroundClip = \"content-box\";\n    div.cloneNode(true).style.backgroundClip = \"\";\n    support.clearCloneStyle = div.style.backgroundClip === \"content-box\";\n\n    jQuery.extend(support, {\n        boxSizingReliable: function () {\n            computeStyleTests();\n            return boxSizingReliableVal;\n        },\n        pixelBoxStyles: function () {\n            computeStyleTests();\n            return pixelBoxStylesVal;\n        },\n        pixelPosition: function () {\n            computeStyleTests();\n            return pixelPositionVal;\n        },\n        reliableMarginLeft: function () {\n            computeStyleTests();\n            return reliableMarginLeftVal;\n        },\n        scrollboxSize: function () {\n            computeStyleTests();\n            return scrollboxSizeVal;\n        }\n    });\n})();\n\n\nfunction curCSS(elem, name, computed) {\n    var width, minWidth, maxWidth, ret,\n\n        // Support: Firefox 51+\n        // Retrieving style before computed somehow\n        // fixes an issue with getting wrong values\n        // on detached elements\n        style = elem.style;\n\n    computed = computed || getStyles(elem);\n\n    // getPropertyValue is needed for:\n    //   .css('filter') (IE 9 only, #12537)\n    //   .css('--customProperty) (#3144)\n    if (computed) {\n        ret = computed.getPropertyValue(name) || computed[name];\n\n        if (ret === \"\" && !jQuery.contains(elem.ownerDocument, elem)) {\n            ret = jQuery.style(elem, name);\n        }\n\n        // A tribute to the \"awesome hack by Dean Edwards\"\n        // Android Browser returns percentage for some values,\n        // but width seems to be reliably pixels.\n        // This is against the CSSOM draft spec:\n        // https://drafts.csswg.org/cssom/#resolved-values\n        if (!support.pixelBoxStyles() && rnumnonpx.test(ret) && rboxStyle.test(name)) {\n\n            // Remember the original values\n            width = style.width;\n            minWidth = style.minWidth;\n            maxWidth = style.maxWidth;\n\n            // Put in the new values to get a computed value out\n            style.minWidth = style.maxWidth = style.width = ret;\n            ret = computed.width;\n\n            // Revert the changed values\n            style.width = width;\n            style.minWidth = minWidth;\n            style.maxWidth = maxWidth;\n        }\n    }\n\n    return ret !== undefined ?\n\n        // Support: IE <=9 - 11 only\n        // IE returns zIndex value as an integer.\n        ret + \"\" :\n        ret;\n}\n\n\nfunction addGetHookIf(conditionFn, hookFn) {\n\n    // Define the hook, we'll check on the first run if it's really needed.\n    return {\n        get: function () {\n            if (conditionFn()) {\n\n                // Hook not needed (or it's not possible to use it due\n                // to missing dependency), remove it.\n                delete this.get;\n                return;\n            }\n\n            // Hook needed; redefine it so that the support test is not executed again.\n            return (this.get = hookFn).apply(this, arguments);\n        }\n    };\n}\n\n\nvar\n\n    // Swappable if display is none or starts with table\n    // except \"table\", \"table-cell\", or \"table-caption\"\n    // See here for display values: https://developer.mozilla.org/en-US/docs/CSS/display\n    rdisplayswap = /^(none|table(?!-c[ea]).+)/,\n    rcustomProp = /^--/,\n    cssShow = {position: \"absolute\", visibility: \"hidden\", display: \"block\"},\n    cssNormalTransform = {\n        letterSpacing: \"0\",\n        fontWeight: \"400\"\n    },\n\n    cssPrefixes = [\"Webkit\", \"Moz\", \"ms\"],\n    emptyStyle = document.createElement(\"div\").style;\n\n// Return a css property mapped to a potentially vendor prefixed property\nfunction vendorPropName(name) {\n\n    // Shortcut for names that are not vendor prefixed\n    if (name in emptyStyle) {\n        return name;\n    }\n\n    // Check for vendor prefixed names\n    var capName = name[0].toUpperCase() + name.slice(1),\n        i = cssPrefixes.length;\n\n    while (i--) {\n        name = cssPrefixes[i] + capName;\n        if (name in emptyStyle) {\n            return name;\n        }\n    }\n}\n\n// Return a property mapped along what jQuery.cssProps suggests or to\n// a vendor prefixed property.\nfunction finalPropName(name) {\n    var ret = jQuery.cssProps[name];\n    if (!ret) {\n        ret = jQuery.cssProps[name] = vendorPropName(name) || name;\n    }\n    return ret;\n}\n\nfunction setPositiveNumber(elem, value, subtract) {\n\n    // Any relative (+/-) values have already been\n    // normalized at this point\n    var matches = rcssNum.exec(value);\n    return matches ?\n\n        // Guard against undefined \"subtract\", e.g., when used as in cssHooks\n        Math.max(0, matches[2] - (subtract || 0)) + (matches[3] || \"px\") :\n        value;\n}\n\nfunction boxModelAdjustment(elem, dimension, box, isBorderBox, styles, computedVal) {\n    var i = dimension === \"width\" ? 1 : 0,\n        extra = 0,\n        delta = 0;\n\n    // Adjustment may not be necessary\n    if (box === (isBorderBox ? \"border\" : \"content\")) {\n        return 0;\n    }\n\n    for (; i < 4; i += 2) {\n\n        // Both box models exclude margin\n        if (box === \"margin\") {\n            delta += jQuery.css(elem, box + cssExpand[i], true, styles);\n        }\n\n        // If we get here with a content-box, we're seeking \"padding\" or \"border\" or \"margin\"\n        if (!isBorderBox) {\n\n            // Add padding\n            delta += jQuery.css(elem, \"padding\" + cssExpand[i], true, styles);\n\n            // For \"border\" or \"margin\", add border\n            if (box !== \"padding\") {\n                delta += jQuery.css(elem, \"border\" + cssExpand[i] + \"Width\", true, styles);\n\n                // But still keep track of it otherwise\n            } else {\n                extra += jQuery.css(elem, \"border\" + cssExpand[i] + \"Width\", true, styles);\n            }\n\n            // If we get here with a border-box (content + padding + border), we're seeking \"content\" or\n            // \"padding\" or \"margin\"\n        } else {\n\n            // For \"content\", subtract padding\n            if (box === \"content\") {\n                delta -= jQuery.css(elem, \"padding\" + cssExpand[i], true, styles);\n            }\n\n            // For \"content\" or \"padding\", subtract border\n            if (box !== \"margin\") {\n                delta -= jQuery.css(elem, \"border\" + cssExpand[i] + \"Width\", true, styles);\n            }\n        }\n    }\n\n    // Account for positive content-box scroll gutter when requested by providing computedVal\n    if (!isBorderBox && computedVal >= 0) {\n\n        // offsetWidth/offsetHeight is a rounded sum of content, padding, scroll gutter, and border\n        // Assuming integer scroll gutter, subtract the rest and round down\n        delta += Math.max(0, Math.ceil(\n            elem[\"offset\" + dimension[0].toUpperCase() + dimension.slice(1)] -\n            computedVal -\n            delta -\n            extra -\n            0.5\n        ));\n    }\n\n    return delta;\n}\n\nfunction getWidthOrHeight(elem, dimension, extra) {\n\n    // Start with computed style\n    var styles = getStyles(elem),\n        val = curCSS(elem, dimension, styles),\n        isBorderBox = jQuery.css(elem, \"boxSizing\", false, styles) === \"border-box\",\n        valueIsBorderBox = isBorderBox;\n\n    // Support: Firefox <=54\n    // Return a confounding non-pixel value or feign ignorance, as appropriate.\n    if (rnumnonpx.test(val)) {\n        if (!extra) {\n            return val;\n        }\n        val = \"auto\";\n    }\n\n    // Check for style in case a browser which returns unreliable values\n    // for getComputedStyle silently falls back to the reliable elem.style\n    valueIsBorderBox = valueIsBorderBox &&\n        (support.boxSizingReliable() || val === elem.style[dimension]);\n\n    // Fall back to offsetWidth/offsetHeight when value is \"auto\"\n    // This happens for inline elements with no explicit setting (gh-3571)\n    // Support: Android <=4.1 - 4.3 only\n    // Also use offsetWidth/offsetHeight for misreported inline dimensions (gh-3602)\n    if (val === \"auto\" ||\n        !parseFloat(val) && jQuery.css(elem, \"display\", false, styles) === \"inline\") {\n\n        val = elem[\"offset\" + dimension[0].toUpperCase() + dimension.slice(1)];\n\n        // offsetWidth/offsetHeight provide border-box values\n        valueIsBorderBox = true;\n    }\n\n    // Normalize \"\" and auto\n    val = parseFloat(val) || 0;\n\n    // Adjust for the element's box model\n    return (val +\n        boxModelAdjustment(\n            elem,\n            dimension,\n            extra || (isBorderBox ? \"border\" : \"content\"),\n            valueIsBorderBox,\n            styles,\n\n            // Provide the current computed size to request scroll gutter calculation (gh-3589)\n            val\n        )\n    ) + \"px\";\n}\n\njQuery.extend({\n\n    // Add in style property hooks for overriding the default\n    // behavior of getting and setting a style property\n    cssHooks: {\n        opacity: {\n            get: function (elem, computed) {\n                if (computed) {\n\n                    // We should always get a number back from opacity\n                    var ret = curCSS(elem, \"opacity\");\n                    return ret === \"\" ? \"1\" : ret;\n                }\n            }\n        }\n    },\n\n    // Don't automatically add \"px\" to these possibly-unitless properties\n    cssNumber: {\n        \"animationIterationCount\": true,\n        \"columnCount\": true,\n        \"fillOpacity\": true,\n        \"flexGrow\": true,\n        \"flexShrink\": true,\n        \"fontWeight\": true,\n        \"lineHeight\": true,\n        \"opacity\": true,\n        \"order\": true,\n        \"orphans\": true,\n        \"widows\": true,\n        \"zIndex\": true,\n        \"zoom\": true\n    },\n\n    // Add in properties whose names you wish to fix before\n    // setting or getting the value\n    cssProps: {},\n\n    // Get and set the style property on a DOM Node\n    style: function (elem, name, value, extra) {\n\n        // Don't set styles on text and comment nodes\n        if (!elem || elem.nodeType === 3 || elem.nodeType === 8 || !elem.style) {\n            return;\n        }\n\n        // Make sure that we're working with the right name\n        var ret, type, hooks,\n            origName = camelCase(name),\n            isCustomProp = rcustomProp.test(name),\n            style = elem.style;\n\n        // Make sure that we're working with the right name. We don't\n        // want to query the value if it is a CSS custom property\n        // since they are user-defined.\n        if (!isCustomProp) {\n            name = finalPropName(origName);\n        }\n\n        // Gets hook for the prefixed version, then unprefixed version\n        hooks = jQuery.cssHooks[name] || jQuery.cssHooks[origName];\n\n        // Check if we're setting a value\n        if (value !== undefined) {\n            type = typeof value;\n\n            // Convert \"+=\" or \"-=\" to relative numbers (#7345)\n            if (type === \"string\" && (ret = rcssNum.exec(value)) && ret[1]) {\n                value = adjustCSS(elem, name, ret);\n\n                // Fixes bug #9237\n                type = \"number\";\n            }\n\n            // Make sure that null and NaN values aren't set (#7116)\n            if (value == null || value !== value) {\n                return;\n            }\n\n            // If a number was passed in, add the unit (except for certain CSS properties)\n            if (type === \"number\") {\n                value += ret && ret[3] || (jQuery.cssNumber[origName] ? \"\" : \"px\");\n            }\n\n            // background-* props affect original clone's values\n            if (!support.clearCloneStyle && value === \"\" && name.indexOf(\"background\") === 0) {\n                style[name] = \"inherit\";\n            }\n\n            // If a hook was provided, use that value, otherwise just set the specified value\n            if (!hooks || !(\"set\" in hooks) ||\n                (value = hooks.set(elem, value, extra)) !== undefined) {\n\n                if (isCustomProp) {\n                    style.setProperty(name, value);\n                } else {\n                    style[name] = value;\n                }\n            }\n\n        } else {\n\n            // If a hook was provided get the non-computed value from there\n            if (hooks && \"get\" in hooks &&\n                (ret = hooks.get(elem, false, extra)) !== undefined) {\n\n                return ret;\n            }\n\n            // Otherwise just get the value from the style object\n            return style[name];\n        }\n    },\n\n    css: function (elem, name, extra, styles) {\n        var val, num, hooks,\n            origName = camelCase(name),\n            isCustomProp = rcustomProp.test(name);\n\n        // Make sure that we're working with the right name. We don't\n        // want to modify the value if it is a CSS custom property\n        // since they are user-defined.\n        if (!isCustomProp) {\n            name = finalPropName(origName);\n        }\n\n        // Try prefixed name followed by the unprefixed name\n        hooks = jQuery.cssHooks[name] || jQuery.cssHooks[origName];\n\n        // If a hook was provided get the computed value from there\n        if (hooks && \"get\" in hooks) {\n            val = hooks.get(elem, true, extra);\n        }\n\n        // Otherwise, if a way to get the computed value exists, use that\n        if (val === undefined) {\n            val = curCSS(elem, name, styles);\n        }\n\n        // Convert \"normal\" to computed value\n        if (val === \"normal\" && name in cssNormalTransform) {\n            val = cssNormalTransform[name];\n        }\n\n        // Make numeric if forced or a qualifier was provided and val looks numeric\n        if (extra === \"\" || extra) {\n            num = parseFloat(val);\n            return extra === true || isFinite(num) ? num || 0 : val;\n        }\n\n        return val;\n    }\n});\n\njQuery.each([\"height\", \"width\"], function (i, dimension) {\n    jQuery.cssHooks[dimension] = {\n        get: function (elem, computed, extra) {\n            if (computed) {\n\n                // Certain elements can have dimension info if we invisibly show them\n                // but it must have a current display style that would benefit\n                return rdisplayswap.test(jQuery.css(elem, \"display\")) &&\n\n                // Support: Safari 8+\n                // Table columns in Safari have non-zero offsetWidth & zero\n                // getBoundingClientRect().width unless display is changed.\n                // Support: IE <=11 only\n                // Running getBoundingClientRect on a disconnected node\n                // in IE throws an error.\n                (!elem.getClientRects().length || !elem.getBoundingClientRect().width) ?\n                    swap(elem, cssShow, function () {\n                        return getWidthOrHeight(elem, dimension, extra);\n                    }) :\n                    getWidthOrHeight(elem, dimension, extra);\n            }\n        },\n\n        set: function (elem, value, extra) {\n            var matches,\n                styles = getStyles(elem),\n                isBorderBox = jQuery.css(elem, \"boxSizing\", false, styles) === \"border-box\",\n                subtract = extra && boxModelAdjustment(\n                    elem,\n                    dimension,\n                    extra,\n                    isBorderBox,\n                    styles\n                );\n\n            // Account for unreliable border-box dimensions by comparing offset* to computed and\n            // faking a content-box to get border and padding (gh-3699)\n            if (isBorderBox && support.scrollboxSize() === styles.position) {\n                subtract -= Math.ceil(\n                    elem[\"offset\" + dimension[0].toUpperCase() + dimension.slice(1)] -\n                    parseFloat(styles[dimension]) -\n                    boxModelAdjustment(elem, dimension, \"border\", false, styles) -\n                    0.5\n                );\n            }\n\n            // Convert to pixels if value adjustment is needed\n            if (subtract && (matches = rcssNum.exec(value)) &&\n                (matches[3] || \"px\") !== \"px\") {\n\n                elem.style[dimension] = value;\n                value = jQuery.css(elem, dimension);\n            }\n\n            return setPositiveNumber(elem, value, subtract);\n        }\n    };\n});\n\njQuery.cssHooks.marginLeft = addGetHookIf(support.reliableMarginLeft,\n    function (elem, computed) {\n        if (computed) {\n            return (parseFloat(curCSS(elem, \"marginLeft\")) ||\n                elem.getBoundingClientRect().left -\n                swap(elem, {marginLeft: 0}, function () {\n                    return elem.getBoundingClientRect().left;\n                })\n            ) + \"px\";\n        }\n    }\n);\n\n// These hooks are used by animate to expand properties\njQuery.each({\n    margin: \"\",\n    padding: \"\",\n    border: \"Width\"\n}, function (prefix, suffix) {\n    jQuery.cssHooks[prefix + suffix] = {\n        expand: function (value) {\n            var i = 0,\n                expanded = {},\n\n                // Assumes a single number if not a string\n                parts = typeof value === \"string\" ? value.split(\" \") : [value];\n\n            for (; i < 4; i++) {\n                expanded[prefix + cssExpand[i] + suffix] =\n                    parts[i] || parts[i - 2] || parts[0];\n            }\n\n            return expanded;\n        }\n    };\n\n    if (prefix !== \"margin\") {\n        jQuery.cssHooks[prefix + suffix].set = setPositiveNumber;\n    }\n});\n\njQuery.fn.extend({\n    css: function (name, value) {\n        return access(this, function (elem, name, value) {\n            var styles, len,\n                map = {},\n                i = 0;\n\n            if (Array.isArray(name)) {\n                styles = getStyles(elem);\n                len = name.length;\n\n                for (; i < len; i++) {\n                    map[name[i]] = jQuery.css(elem, name[i], false, styles);\n                }\n\n                return map;\n            }\n\n            return value !== undefined ?\n                jQuery.style(elem, name, value) :\n                jQuery.css(elem, name);\n        }, name, value, arguments.length > 1);\n    }\n});\n\n\n// Based off of the plugin by Clint Helfers, with permission.\n// https://web.archive.org/web/20100324014747/http://blindsignals.com/index.php/2009/07/jquery-delay/\njQuery.fn.delay = function (time, type) {\n    time = jQuery.fx ? jQuery.fx.speeds[time] || time : time;\n    type = type || \"fx\";\n\n    return this.queue(type, function (next, hooks) {\n        var timeout = window.setTimeout(next, time);\n        hooks.stop = function () {\n            window.clearTimeout(timeout);\n        };\n    });\n};\n\n\n(function () {\n    var input = document.createElement(\"input\"),\n        select = document.createElement(\"select\"),\n        opt = select.appendChild(document.createElement(\"option\"));\n\n    input.type = \"checkbox\";\n\n    // Support: Android <=4.3 only\n    // Default value for a checkbox should be \"on\"\n    support.checkOn = input.value !== \"\";\n\n    // Support: IE <=11 only\n    // Must access selectedIndex to make default options select\n    support.optSelected = opt.selected;\n\n    // Support: IE <=11 only\n    // An input loses its value after becoming a radio\n    input = document.createElement(\"input\");\n    input.value = \"t\";\n    input.type = \"radio\";\n    support.radioValue = input.value === \"t\";\n})();\n\n\nvar boolHook,\n    attrHandle = jQuery.expr.attrHandle;\n\njQuery.fn.extend({\n    attr: function (name, value) {\n        return access(this, jQuery.attr, name, value, arguments.length > 1);\n    },\n\n    removeAttr: function (name) {\n        return this.each(function () {\n            jQuery.removeAttr(this, name);\n        });\n    }\n});\n\njQuery.extend({\n    attr: function (elem, name, value) {\n        var ret, hooks,\n            nType = elem.nodeType;\n\n        // Don't get/set attributes on text, comment and attribute nodes\n        if (nType === 3 || nType === 8 || nType === 2) {\n            return;\n        }\n\n        // Fallback to prop when attributes are not supported\n        if (typeof elem.getAttribute === \"undefined\") {\n            return jQuery.prop(elem, name, value);\n        }\n\n        // Attribute hooks are determined by the lowercase version\n        // Grab necessary hook if one is defined\n        if (nType !== 1 || !jQuery.isXMLDoc(elem)) {\n            hooks = jQuery.attrHooks[name.toLowerCase()] ||\n                (jQuery.expr.match.bool.test(name) ? boolHook : undefined);\n        }\n\n        if (value !== undefined) {\n            if (value === null) {\n                jQuery.removeAttr(elem, name);\n                return;\n            }\n\n            if (hooks && \"set\" in hooks &&\n                (ret = hooks.set(elem, value, name)) !== undefined) {\n                return ret;\n            }\n\n            elem.setAttribute(name, value + \"\");\n            return value;\n        }\n\n        if (hooks && \"get\" in hooks && (ret = hooks.get(elem, name)) !== null) {\n            return ret;\n        }\n\n        ret = jQuery.find.attr(elem, name);\n\n        // Non-existent attributes return null, we normalize to undefined\n        return ret == null ? undefined : ret;\n    },\n\n    attrHooks: {\n        type: {\n            set: function (elem, value) {\n                if (!support.radioValue && value === \"radio\" &&\n                    nodeName(elem, \"input\")) {\n                    var val = elem.value;\n                    elem.setAttribute(\"type\", value);\n                    if (val) {\n                        elem.value = val;\n                    }\n                    return value;\n                }\n            }\n        }\n    },\n\n    removeAttr: function (elem, value) {\n        var name,\n            i = 0,\n\n            // Attribute names can contain non-HTML whitespace characters\n            // https://html.spec.whatwg.org/multipage/syntax.html#attributes-2\n            attrNames = value && value.match(rnothtmlwhite);\n\n        if (attrNames && elem.nodeType === 1) {\n            while ((name = attrNames[i++])) {\n                elem.removeAttribute(name);\n            }\n        }\n    }\n});\n\n// Hooks for boolean attributes\nboolHook = {\n    set: function (elem, value, name) {\n        if (value === false) {\n\n            // Remove boolean attributes when set to false\n            jQuery.removeAttr(elem, name);\n        } else {\n            elem.setAttribute(name, name);\n        }\n        return name;\n    }\n};\n\njQuery.each(jQuery.expr.match.bool.source.match(/\\w+/g), function (i, name) {\n    var getter = attrHandle[name] || jQuery.find.attr;\n\n    attrHandle[name] = function (elem, name, isXML) {\n        var ret, handle,\n            lowercaseName = name.toLowerCase();\n\n        if (!isXML) {\n\n            // Avoid an infinite loop by temporarily removing this function from the getter\n            handle = attrHandle[lowercaseName];\n            attrHandle[lowercaseName] = ret;\n            ret = getter(elem, name, isXML) != null ?\n                lowercaseName :\n                null;\n            attrHandle[lowercaseName] = handle;\n        }\n        return ret;\n    };\n});\n\n\nvar rfocusable = /^(?:input|select|textarea|button)$/i,\n    rclickable = /^(?:a|area)$/i;\n\njQuery.fn.extend({\n    prop: function (name, value) {\n        return access(this, jQuery.prop, name, value, arguments.length > 1);\n    },\n\n    removeProp: function (name) {\n        return this.each(function () {\n            delete this[jQuery.propFix[name] || name];\n        });\n    }\n});\n\njQuery.extend({\n    prop: function (elem, name, value) {\n        var ret, hooks,\n            nType = elem.nodeType;\n\n        // Don't get/set properties on text, comment and attribute nodes\n        if (nType === 3 || nType === 8 || nType === 2) {\n            return;\n        }\n\n        if (nType !== 1 || !jQuery.isXMLDoc(elem)) {\n\n            // Fix name and attach hooks\n            name = jQuery.propFix[name] || name;\n            hooks = jQuery.propHooks[name];\n        }\n\n        if (value !== undefined) {\n            if (hooks && \"set\" in hooks &&\n                (ret = hooks.set(elem, value, name)) !== undefined) {\n                return ret;\n            }\n\n            return (elem[name] = value);\n        }\n\n        if (hooks && \"get\" in hooks && (ret = hooks.get(elem, name)) !== null) {\n            return ret;\n        }\n\n        return elem[name];\n    },\n\n    propHooks: {\n        tabIndex: {\n            get: function (elem) {\n\n                // Support: IE <=9 - 11 only\n                // elem.tabIndex doesn't always return the\n                // correct value when it hasn't been explicitly set\n                // https://web.archive.org/web/20141116233347/http://fluidproject.org/blog/2008/01/09/getting-setting-and-removing-tabindex-values-with-javascript/\n                // Use proper attribute retrieval(#12072)\n                var tabindex = jQuery.find.attr(elem, \"tabindex\");\n\n                if (tabindex) {\n                    return parseInt(tabindex, 10);\n                }\n\n                if (\n                    rfocusable.test(elem.nodeName) ||\n                    rclickable.test(elem.nodeName) &&\n                    elem.href\n                ) {\n                    return 0;\n                }\n\n                return -1;\n            }\n        }\n    },\n\n    propFix: {\n        \"for\": \"htmlFor\",\n        \"class\": \"className\"\n    }\n});\n\n// Support: IE <=11 only\n// Accessing the selectedIndex property\n// forces the browser to respect setting selected\n// on the option\n// The getter ensures a default option is selected\n// when in an optgroup\n// eslint rule \"no-unused-expressions\" is disabled for this code\n// since it considers such accessions noop\nif (!support.optSelected) {\n    jQuery.propHooks.selected = {\n        get: function (elem) {\n\n            /* eslint no-unused-expressions: \"off\" */\n\n            var parent = elem.parentNode;\n            if (parent && parent.parentNode) {\n                parent.parentNode.selectedIndex;\n            }\n            return null;\n        },\n        set: function (elem) {\n\n            /* eslint no-unused-expressions: \"off\" */\n\n            var parent = elem.parentNode;\n            if (parent) {\n                parent.selectedIndex;\n\n                if (parent.parentNode) {\n                    parent.parentNode.selectedIndex;\n                }\n            }\n        }\n    };\n}\n\njQuery.each([\n    \"tabIndex\",\n    \"readOnly\",\n    \"maxLength\",\n    \"cellSpacing\",\n    \"cellPadding\",\n    \"rowSpan\",\n    \"colSpan\",\n    \"useMap\",\n    \"frameBorder\",\n    \"contentEditable\"\n], function () {\n    jQuery.propFix[this.toLowerCase()] = this;\n});\n\n\n// Strip and collapse whitespace according to HTML spec\n// https://infra.spec.whatwg.org/#strip-and-collapse-ascii-whitespace\nfunction stripAndCollapse(value) {\n    var tokens = value.match(rnothtmlwhite) || [];\n    return tokens.join(\" \");\n}\n\n\nfunction getClass(elem) {\n    return elem.getAttribute && elem.getAttribute(\"class\") || \"\";\n}\n\nfunction classesToArray(value) {\n    if (Array.isArray(value)) {\n        return value;\n    }\n    if (typeof value === \"string\") {\n        return value.match(rnothtmlwhite) || [];\n    }\n    return [];\n}\n\njQuery.fn.extend({\n    addClass: function (value) {\n        var classes, elem, cur, curValue, clazz, j, finalValue,\n            i = 0;\n\n        if (isFunction(value)) {\n            return this.each(function (j) {\n                jQuery(this).addClass(value.call(this, j, getClass(this)));\n            });\n        }\n\n        classes = classesToArray(value);\n\n        if (classes.length) {\n            while ((elem = this[i++])) {\n                curValue = getClass(elem);\n                cur = elem.nodeType === 1 && (\" \" + stripAndCollapse(curValue) + \" \");\n\n                if (cur) {\n                    j = 0;\n                    while ((clazz = classes[j++])) {\n                        if (cur.indexOf(\" \" + clazz + \" \") < 0) {\n                            cur += clazz + \" \";\n                        }\n                    }\n\n                    // Only assign if different to avoid unneeded rendering.\n                    finalValue = stripAndCollapse(cur);\n                    if (curValue !== finalValue) {\n                        elem.setAttribute(\"class\", finalValue);\n                    }\n                }\n            }\n        }\n\n        return this;\n    },\n\n    removeClass: function (value) {\n        var classes, elem, cur, curValue, clazz, j, finalValue,\n            i = 0;\n\n        if (isFunction(value)) {\n            return this.each(function (j) {\n                jQuery(this).removeClass(value.call(this, j, getClass(this)));\n            });\n        }\n\n        if (!arguments.length) {\n            return this.attr(\"class\", \"\");\n        }\n\n        classes = classesToArray(value);\n\n        if (classes.length) {\n            while ((elem = this[i++])) {\n                curValue = getClass(elem);\n\n                // This expression is here for better compressibility (see addClass)\n                cur = elem.nodeType === 1 && (\" \" + stripAndCollapse(curValue) + \" \");\n\n                if (cur) {\n                    j = 0;\n                    while ((clazz = classes[j++])) {\n\n                        // Remove *all* instances\n                        while (cur.indexOf(\" \" + clazz + \" \") > -1) {\n                            cur = cur.replace(\" \" + clazz + \" \", \" \");\n                        }\n                    }\n\n                    // Only assign if different to avoid unneeded rendering.\n                    finalValue = stripAndCollapse(cur);\n                    if (curValue !== finalValue) {\n                        elem.setAttribute(\"class\", finalValue);\n                    }\n                }\n            }\n        }\n\n        return this;\n    },\n\n    toggleClass: function (value, stateVal) {\n        var type = typeof value,\n            isValidValue = type === \"string\" || Array.isArray(value);\n\n        if (typeof stateVal === \"boolean\" && isValidValue) {\n            return stateVal ? this.addClass(value) : this.removeClass(value);\n        }\n\n        if (isFunction(value)) {\n            return this.each(function (i) {\n                jQuery(this).toggleClass(\n                    value.call(this, i, getClass(this), stateVal),\n                    stateVal\n                );\n            });\n        }\n\n        return this.each(function () {\n            var className, i, self, classNames;\n\n            if (isValidValue) {\n\n                // Toggle individual class names\n                i = 0;\n                self = jQuery(this);\n                classNames = classesToArray(value);\n\n                while ((className = classNames[i++])) {\n\n                    // Check each className given, space separated list\n                    if (self.hasClass(className)) {\n                        self.removeClass(className);\n                    } else {\n                        self.addClass(className);\n                    }\n                }\n\n                // Toggle whole class name\n            } else if (value === undefined || type === \"boolean\") {\n                className = getClass(this);\n                if (className) {\n\n                    // Store className if set\n                    dataPriv.set(this, \"__className__\", className);\n                }\n\n                // If the element has a class name or if we're passed `false`,\n                // then remove the whole classname (if there was one, the above saved it).\n                // Otherwise bring back whatever was previously saved (if anything),\n                // falling back to the empty string if nothing was stored.\n                if (this.setAttribute) {\n                    this.setAttribute(\"class\",\n                        className || value === false ?\n                            \"\" :\n                            dataPriv.get(this, \"__className__\") || \"\"\n                    );\n                }\n            }\n        });\n    },\n\n    hasClass: function (selector) {\n        var className, elem,\n            i = 0;\n\n        className = \" \" + selector + \" \";\n        while ((elem = this[i++])) {\n            if (elem.nodeType === 1 &&\n                (\" \" + stripAndCollapse(getClass(elem)) + \" \").indexOf(className) > -1) {\n                return true;\n            }\n        }\n\n        return false;\n    }\n});\n\n\nvar rreturn = /\\r/g;\n\njQuery.fn.extend({\n    val: function (value) {\n        var hooks, ret, valueIsFunction,\n            elem = this[0];\n\n        if (!arguments.length) {\n            if (elem) {\n                hooks = jQuery.valHooks[elem.type] ||\n                    jQuery.valHooks[elem.nodeName.toLowerCase()];\n\n                if (hooks &&\n                    \"get\" in hooks &&\n                    (ret = hooks.get(elem, \"value\")) !== undefined\n                ) {\n                    return ret;\n                }\n\n                ret = elem.value;\n\n                // Handle most common string cases\n                if (typeof ret === \"string\") {\n                    return ret.replace(rreturn, \"\");\n                }\n\n                // Handle cases where value is null/undef or number\n                return ret == null ? \"\" : ret;\n            }\n\n            return;\n        }\n\n        valueIsFunction = isFunction(value);\n\n        return this.each(function (i) {\n            var val;\n\n            if (this.nodeType !== 1) {\n                return;\n            }\n\n            if (valueIsFunction) {\n                val = value.call(this, i, jQuery(this).val());\n            } else {\n                val = value;\n            }\n\n            // Treat null/undefined as \"\"; convert numbers to string\n            if (val == null) {\n                val = \"\";\n\n            } else if (typeof val === \"number\") {\n                val += \"\";\n\n            } else if (Array.isArray(val)) {\n                val = jQuery.map(val, function (value) {\n                    return value == null ? \"\" : value + \"\";\n                });\n            }\n\n            hooks = jQuery.valHooks[this.type] || jQuery.valHooks[this.nodeName.toLowerCase()];\n\n            // If set returns undefined, fall back to normal setting\n            if (!hooks || !(\"set\" in hooks) || hooks.set(this, val, \"value\") === undefined) {\n                this.value = val;\n            }\n        });\n    }\n});\n\njQuery.extend({\n    valHooks: {\n        option: {\n            get: function (elem) {\n\n                var val = jQuery.find.attr(elem, \"value\");\n                return val != null ?\n                    val :\n\n                    // Support: IE <=10 - 11 only\n                    // option.text throws exceptions (#14686, #14858)\n                    // Strip and collapse whitespace\n                    // https://html.spec.whatwg.org/#strip-and-collapse-whitespace\n                    stripAndCollapse(jQuery.text(elem));\n            }\n        },\n        select: {\n            get: function (elem) {\n                var value, option, i,\n                    options = elem.options,\n                    index = elem.selectedIndex,\n                    one = elem.type === \"select-one\",\n                    values = one ? null : [],\n                    max = one ? index + 1 : options.length;\n\n                if (index < 0) {\n                    i = max;\n\n                } else {\n                    i = one ? index : 0;\n                }\n\n                // Loop through all the selected options\n                for (; i < max; i++) {\n                    option = options[i];\n\n                    // Support: IE <=9 only\n                    // IE8-9 doesn't update selected after form reset (#2551)\n                    if ((option.selected || i === index) &&\n\n                        // Don't return options that are disabled or in a disabled optgroup\n                        !option.disabled &&\n                        (!option.parentNode.disabled ||\n                            !nodeName(option.parentNode, \"optgroup\"))) {\n\n                        // Get the specific value for the option\n                        value = jQuery(option).val();\n\n                        // We don't need an array for one selects\n                        if (one) {\n                            return value;\n                        }\n\n                        // Multi-Selects return an array\n                        values.push(value);\n                    }\n                }\n\n                return values;\n            },\n\n            set: function (elem, value) {\n                var optionSet, option,\n                    options = elem.options,\n                    values = jQuery.makeArray(value),\n                    i = options.length;\n\n                while (i--) {\n                    option = options[i];\n\n                    /* eslint-disable no-cond-assign */\n\n                    if (option.selected =\n                        jQuery.inArray(jQuery.valHooks.option.get(option), values) > -1\n                    ) {\n                        optionSet = true;\n                    }\n\n                    /* eslint-enable no-cond-assign */\n                }\n\n                // Force browsers to behave consistently when non-matching value is set\n                if (!optionSet) {\n                    elem.selectedIndex = -1;\n                }\n                return values;\n            }\n        }\n    }\n});\n\n// Radios and checkboxes getter/setter\njQuery.each([\"radio\", \"checkbox\"], function () {\n    jQuery.valHooks[this] = {\n        set: function (elem, value) {\n            if (Array.isArray(value)) {\n                return (elem.checked = jQuery.inArray(jQuery(elem).val(), value) > -1);\n            }\n        }\n    };\n    if (!support.checkOn) {\n        jQuery.valHooks[this].get = function (elem) {\n            return elem.getAttribute(\"value\") === null ? \"on\" : elem.value;\n        };\n    }\n});\n\n\n// Return jQuery for attributes-only inclusion\n\n\nsupport.focusin = \"onfocusin\" in window;\n\n\nvar rfocusMorph = /^(?:focusinfocus|focusoutblur)$/,\n    stopPropagationCallback = function (e) {\n        e.stopPropagation();\n    };\n\njQuery.extend(jQuery.event, {\n\n    trigger: function (event, data, elem, onlyHandlers) {\n\n        var i, cur, tmp, bubbleType, ontype, handle, special, lastElement,\n            eventPath = [elem || document],\n            type = hasOwn.call(event, \"type\") ? event.type : event,\n            namespaces = hasOwn.call(event, \"namespace\") ? event.namespace.split(\".\") : [];\n\n        cur = lastElement = tmp = elem = elem || document;\n\n        // Don't do events on text and comment nodes\n        if (elem.nodeType === 3 || elem.nodeType === 8) {\n            return;\n        }\n\n        // focus/blur morphs to focusin/out; ensure we're not firing them right now\n        if (rfocusMorph.test(type + jQuery.event.triggered)) {\n            return;\n        }\n\n        if (type.indexOf(\".\") > -1) {\n\n            // Namespaced trigger; create a regexp to match event type in handle()\n            namespaces = type.split(\".\");\n            type = namespaces.shift();\n            namespaces.sort();\n        }\n        ontype = type.indexOf(\":\") < 0 && \"on\" + type;\n\n        // Caller can pass in a jQuery.Event object, Object, or just an event type string\n        event = event[jQuery.expando] ?\n            event :\n            new jQuery.Event(type, typeof event === \"object\" && event);\n\n        // Trigger bitmask: & 1 for native handlers; & 2 for jQuery (always true)\n        event.isTrigger = onlyHandlers ? 2 : 3;\n        event.namespace = namespaces.join(\".\");\n        event.rnamespace = event.namespace ?\n            new RegExp(\"(^|\\\\.)\" + namespaces.join(\"\\\\.(?:.*\\\\.|)\") + \"(\\\\.|$)\") :\n            null;\n\n        // Clean up the event in case it is being reused\n        event.result = undefined;\n        if (!event.target) {\n            event.target = elem;\n        }\n\n        // Clone any incoming data and prepend the event, creating the handler arg list\n        data = data == null ?\n            [event] :\n            jQuery.makeArray(data, [event]);\n\n        // Allow special events to draw outside the lines\n        special = jQuery.event.special[type] || {};\n        if (!onlyHandlers && special.trigger && special.trigger.apply(elem, data) === false) {\n            return;\n        }\n\n        // Determine event propagation path in advance, per W3C events spec (#9951)\n        // Bubble up to document, then to window; watch for a global ownerDocument var (#9724)\n        if (!onlyHandlers && !special.noBubble && !isWindow(elem)) {\n\n            bubbleType = special.delegateType || type;\n            if (!rfocusMorph.test(bubbleType + type)) {\n                cur = cur.parentNode;\n            }\n            for (; cur; cur = cur.parentNode) {\n                eventPath.push(cur);\n                tmp = cur;\n            }\n\n            // Only add window if we got to document (e.g., not plain obj or detached DOM)\n            if (tmp === (elem.ownerDocument || document)) {\n                eventPath.push(tmp.defaultView || tmp.parentWindow || window);\n            }\n        }\n\n        // Fire handlers on the event path\n        i = 0;\n        while ((cur = eventPath[i++]) && !event.isPropagationStopped()) {\n            lastElement = cur;\n            event.type = i > 1 ?\n                bubbleType :\n                special.bindType || type;\n\n            // jQuery handler\n            handle = (dataPriv.get(cur, \"events\") || {})[event.type] &&\n                dataPriv.get(cur, \"handle\");\n            if (handle) {\n                handle.apply(cur, data);\n            }\n\n            // Native handler\n            handle = ontype && cur[ontype];\n            if (handle && handle.apply && acceptData(cur)) {\n                event.result = handle.apply(cur, data);\n                if (event.result === false) {\n                    event.preventDefault();\n                }\n            }\n        }\n        event.type = type;\n\n        // If nobody prevented the default action, do it now\n        if (!onlyHandlers && !event.isDefaultPrevented()) {\n\n            if ((!special._default ||\n                special._default.apply(eventPath.pop(), data) === false) &&\n                acceptData(elem)) {\n\n                // Call a native DOM method on the target with the same name as the event.\n                // Don't do default actions on window, that's where global variables be (#6170)\n                if (ontype && isFunction(elem[type]) && !isWindow(elem)) {\n\n                    // Don't re-trigger an onFOO event when we call its FOO() method\n                    tmp = elem[ontype];\n\n                    if (tmp) {\n                        elem[ontype] = null;\n                    }\n\n                    // Prevent re-triggering of the same event, since we already bubbled it above\n                    jQuery.event.triggered = type;\n\n                    if (event.isPropagationStopped()) {\n                        lastElement.addEventListener(type, stopPropagationCallback);\n                    }\n\n                    elem[type]();\n\n                    if (event.isPropagationStopped()) {\n                        lastElement.removeEventListener(type, stopPropagationCallback);\n                    }\n\n                    jQuery.event.triggered = undefined;\n\n                    if (tmp) {\n                        elem[ontype] = tmp;\n                    }\n                }\n            }\n        }\n\n        return event.result;\n    },\n\n    // Piggyback on a donor event to simulate a different one\n    // Used only for `focus(in | out)` events\n    simulate: function (type, elem, event) {\n        var e = jQuery.extend(\n            new jQuery.Event(),\n            event,\n            {\n                type: type,\n                isSimulated: true\n            }\n        );\n\n        jQuery.event.trigger(e, null, elem);\n    }\n\n});\n\njQuery.fn.extend({\n\n    trigger: function (type, data) {\n        return this.each(function () {\n            jQuery.event.trigger(type, data, this);\n        });\n    },\n    triggerHandler: function (type, data) {\n        var elem = this[0];\n        if (elem) {\n            return jQuery.event.trigger(type, data, elem, true);\n        }\n    }\n});\n\n\n// Support: Firefox <=44\n// Firefox doesn't have focus(in | out) events\n// Related ticket - https://bugzilla.mozilla.org/show_bug.cgi?id=687787\n//\n// Support: Chrome <=48 - 49, Safari <=9.0 - 9.1\n// focus(in | out) events fire after focus & blur events,\n// which is spec violation - http://www.w3.org/TR/DOM-Level-3-Events/#events-focusevent-event-order\n// Related ticket - https://bugs.chromium.org/p/chromium/issues/detail?id=449857\nif (!support.focusin) {\n    jQuery.each({focus: \"focusin\", blur: \"focusout\"}, function (orig, fix) {\n\n        // Attach a single capturing handler on the document while someone wants focusin/focusout\n        var handler = function (event) {\n            jQuery.event.simulate(fix, event.target, jQuery.event.fix(event));\n        };\n\n        jQuery.event.special[fix] = {\n            setup: function () {\n                var doc = this.ownerDocument || this,\n                    attaches = dataPriv.access(doc, fix);\n\n                if (!attaches) {\n                    doc.addEventListener(orig, handler, true);\n                }\n                dataPriv.access(doc, fix, (attaches || 0) + 1);\n            },\n            teardown: function () {\n                var doc = this.ownerDocument || this,\n                    attaches = dataPriv.access(doc, fix) - 1;\n\n                if (!attaches) {\n                    doc.removeEventListener(orig, handler, true);\n                    dataPriv.remove(doc, fix);\n\n                } else {\n                    dataPriv.access(doc, fix, attaches);\n                }\n            }\n        };\n    });\n}\n\n\nvar\n    rbracket = /\\[\\]$/,\n    rCRLF = /\\r?\\n/g,\n    rsubmitterTypes = /^(?:submit|button|image|reset|file)$/i,\n    rsubmittable = /^(?:input|select|textarea|keygen)/i;\n\nfunction buildParams(prefix, obj, traditional, add) {\n    var name;\n\n    if (Array.isArray(obj)) {\n\n        // Serialize array item.\n        jQuery.each(obj, function (i, v) {\n            if (traditional || rbracket.test(prefix)) {\n\n                // Treat each array item as a scalar.\n                add(prefix, v);\n\n            } else {\n\n                // Item is non-scalar (array or object), encode its numeric index.\n                buildParams(\n                    prefix + \"[\" + (typeof v === \"object\" && v != null ? i : \"\") + \"]\",\n                    v,\n                    traditional,\n                    add\n                );\n            }\n        });\n\n    } else if (!traditional && toType(obj) === \"object\") {\n\n        // Serialize object item.\n        for (name in obj) {\n            buildParams(prefix + \"[\" + name + \"]\", obj[name], traditional, add);\n        }\n\n    } else {\n\n        // Serialize scalar item.\n        add(prefix, obj);\n    }\n}\n\n// Serialize an array of form elements or a set of\n// key/values into a query string\njQuery.param = function (a, traditional) {\n    var prefix,\n        s = [],\n        add = function (key, valueOrFunction) {\n\n            // If value is a function, invoke it and use its return value\n            var value = isFunction(valueOrFunction) ?\n                valueOrFunction() :\n                valueOrFunction;\n\n            s[s.length] = encodeURIComponent(key) + \"=\" +\n                encodeURIComponent(value == null ? \"\" : value);\n        };\n\n    // If an array was passed in, assume that it is an array of form elements.\n    if (Array.isArray(a) || (a.jquery && !jQuery.isPlainObject(a))) {\n\n        // Serialize the form elements\n        jQuery.each(a, function () {\n            add(this.name, this.value);\n        });\n\n    } else {\n\n        // If traditional, encode the \"old\" way (the way 1.3.2 or older\n        // did it), otherwise encode params recursively.\n        for (prefix in a) {\n            buildParams(prefix, a[prefix], traditional, add);\n        }\n    }\n\n    // Return the resulting serialization\n    return s.join(\"&\");\n};\n\njQuery.fn.extend({\n    serialize: function () {\n        return jQuery.param(this.serializeArray());\n    },\n    serializeArray: function () {\n        return this.map(function () {\n\n            // Can add propHook for \"elements\" to filter or add form elements\n            var elements = jQuery.prop(this, \"elements\");\n            return elements ? jQuery.makeArray(elements) : this;\n        })\n            .filter(function () {\n                var type = this.type;\n\n                // Use .is( \":disabled\" ) so that fieldset[disabled] works\n                return this.name && !jQuery(this).is(\":disabled\") &&\n                    rsubmittable.test(this.nodeName) && !rsubmitterTypes.test(type) &&\n                    (this.checked || !rcheckableType.test(type));\n            })\n            .map(function (i, elem) {\n                var val = jQuery(this).val();\n\n                if (val == null) {\n                    return null;\n                }\n\n                if (Array.isArray(val)) {\n                    return jQuery.map(val, function (val) {\n                        return {name: elem.name, value: val.replace(rCRLF, \"\\r\\n\")};\n                    });\n                }\n\n                return {name: elem.name, value: val.replace(rCRLF, \"\\r\\n\")};\n            }).get();\n    }\n});\n\n\njQuery.fn.extend({\n    wrapAll: function (html) {\n        var wrap;\n\n        if (this[0]) {\n            if (isFunction(html)) {\n                html = html.call(this[0]);\n            }\n\n            // The elements to wrap the target around\n            wrap = jQuery(html, this[0].ownerDocument).eq(0).clone(true);\n\n            if (this[0].parentNode) {\n                wrap.insertBefore(this[0]);\n            }\n\n            wrap.map(function () {\n                var elem = this;\n\n                while (elem.firstElementChild) {\n                    elem = elem.firstElementChild;\n                }\n\n                return elem;\n            }).append(this);\n        }\n\n        return this;\n    },\n\n    wrapInner: function (html) {\n        if (isFunction(html)) {\n            return this.each(function (i) {\n                jQuery(this).wrapInner(html.call(this, i));\n            });\n        }\n\n        return this.each(function () {\n            var self = jQuery(this),\n                contents = self.contents();\n\n            if (contents.length) {\n                contents.wrapAll(html);\n\n            } else {\n                self.append(html);\n            }\n        });\n    },\n\n    wrap: function (html) {\n        var htmlIsFunction = isFunction(html);\n\n        return this.each(function (i) {\n            jQuery(this).wrapAll(htmlIsFunction ? html.call(this, i) : html);\n        });\n    },\n\n    unwrap: function (selector) {\n        this.parent(selector).not(\"body\").each(function () {\n            jQuery(this).replaceWith(this.childNodes);\n        });\n        return this;\n    }\n});\n\n\njQuery.expr.pseudos.hidden = function (elem) {\n    return !jQuery.expr.pseudos.visible(elem);\n};\njQuery.expr.pseudos.visible = function (elem) {\n    return !!(elem.offsetWidth || elem.offsetHeight || elem.getClientRects().length);\n};\n\n\n// Support: Safari 8 only\n// In Safari 8 documents created via document.implementation.createHTMLDocument\n// collapse sibling forms: the second one becomes a child of the first one.\n// Because of that, this security measure has to be disabled in Safari 8.\n// https://bugs.webkit.org/show_bug.cgi?id=137337\nsupport.createHTMLDocument = (function () {\n    var body = document.implementation.createHTMLDocument(\"\").body;\n    body.innerHTML = \"<form></form><form></form>\";\n    return body.childNodes.length === 2;\n})();\n\n\n// Argument \"data\" should be string of html\n// context (optional): If specified, the fragment will be created in this context,\n// defaults to document\n// keepScripts (optional): If true, will include scripts passed in the html string\njQuery.parseHTML = function (data, context, keepScripts) {\n    if (typeof data !== \"string\") {\n        return [];\n    }\n    if (typeof context === \"boolean\") {\n        keepScripts = context;\n        context = false;\n    }\n\n    var base, parsed, scripts;\n\n    if (!context) {\n\n        // Stop scripts or inline event handlers from being executed immediately\n        // by using document.implementation\n        if (support.createHTMLDocument) {\n            context = document.implementation.createHTMLDocument(\"\");\n\n            // Set the base href for the created document\n            // so any parsed elements with URLs\n            // are based on the document's URL (gh-2965)\n            base = context.createElement(\"base\");\n            base.href = document.location.href;\n            context.head.appendChild(base);\n        } else {\n            context = document;\n        }\n    }\n\n    parsed = rsingleTag.exec(data);\n    scripts = !keepScripts && [];\n\n    // Single tag\n    if (parsed) {\n        return [context.createElement(parsed[1])];\n    }\n\n    parsed = buildFragment([data], context, scripts);\n\n    if (scripts && scripts.length) {\n        jQuery(scripts).remove();\n    }\n\n    return jQuery.merge([], parsed.childNodes);\n};\n\n\njQuery.offset = {\n    setOffset: function (elem, options, i) {\n        var curPosition, curLeft, curCSSTop, curTop, curOffset, curCSSLeft, calculatePosition,\n            position = jQuery.css(elem, \"position\"),\n            curElem = jQuery(elem),\n            props = {};\n\n        // Set position first, in-case top/left are set even on static elem\n        if (position === \"static\") {\n            elem.style.position = \"relative\";\n        }\n\n        curOffset = curElem.offset();\n        curCSSTop = jQuery.css(elem, \"top\");\n        curCSSLeft = jQuery.css(elem, \"left\");\n        calculatePosition = (position === \"absolute\" || position === \"fixed\") &&\n            (curCSSTop + curCSSLeft).indexOf(\"auto\") > -1;\n\n        // Need to be able to calculate position if either\n        // top or left is auto and position is either absolute or fixed\n        if (calculatePosition) {\n            curPosition = curElem.position();\n            curTop = curPosition.top;\n            curLeft = curPosition.left;\n\n        } else {\n            curTop = parseFloat(curCSSTop) || 0;\n            curLeft = parseFloat(curCSSLeft) || 0;\n        }\n\n        if (isFunction(options)) {\n\n            // Use jQuery.extend here to allow modification of coordinates argument (gh-1848)\n            options = options.call(elem, i, jQuery.extend({}, curOffset));\n        }\n\n        if (options.top != null) {\n            props.top = (options.top - curOffset.top) + curTop;\n        }\n        if (options.left != null) {\n            props.left = (options.left - curOffset.left) + curLeft;\n        }\n\n        if (\"using\" in options) {\n            options.using.call(elem, props);\n\n        } else {\n            curElem.css(props);\n        }\n    }\n};\n\njQuery.fn.extend({\n\n    // offset() relates an element's border box to the document origin\n    offset: function (options) {\n\n        // Preserve chaining for setter\n        if (arguments.length) {\n            return options === undefined ?\n                this :\n                this.each(function (i) {\n                    jQuery.offset.setOffset(this, options, i);\n                });\n        }\n\n        var rect, win,\n            elem = this[0];\n\n        if (!elem) {\n            return;\n        }\n\n        // Return zeros for disconnected and hidden (display: none) elements (gh-2310)\n        // Support: IE <=11 only\n        // Running getBoundingClientRect on a\n        // disconnected node in IE throws an error\n        if (!elem.getClientRects().length) {\n            return {top: 0, left: 0};\n        }\n\n        // Get document-relative position by adding viewport scroll to viewport-relative gBCR\n        rect = elem.getBoundingClientRect();\n        win = elem.ownerDocument.defaultView;\n        return {\n            top: rect.top + win.pageYOffset,\n            left: rect.left + win.pageXOffset\n        };\n    },\n\n    // position() relates an element's margin box to its offset parent's padding box\n    // This corresponds to the behavior of CSS absolute positioning\n    position: function () {\n        if (!this[0]) {\n            return;\n        }\n\n        var offsetParent, offset, doc,\n            elem = this[0],\n            parentOffset = {top: 0, left: 0};\n\n        // position:fixed elements are offset from the viewport, which itself always has zero offset\n        if (jQuery.css(elem, \"position\") === \"fixed\") {\n\n            // Assume position:fixed implies availability of getBoundingClientRect\n            offset = elem.getBoundingClientRect();\n\n        } else {\n            offset = this.offset();\n\n            // Account for the *real* offset parent, which can be the document or its root element\n            // when a statically positioned element is identified\n            doc = elem.ownerDocument;\n            offsetParent = elem.offsetParent || doc.documentElement;\n            while (offsetParent &&\n            (offsetParent === doc.body || offsetParent === doc.documentElement) &&\n            jQuery.css(offsetParent, \"position\") === \"static\") {\n\n                offsetParent = offsetParent.parentNode;\n            }\n            if (offsetParent && offsetParent !== elem && offsetParent.nodeType === 1) {\n\n                // Incorporate borders into its offset, since they are outside its content origin\n                parentOffset = jQuery(offsetParent).offset();\n                parentOffset.top += jQuery.css(offsetParent, \"borderTopWidth\", true);\n                parentOffset.left += jQuery.css(offsetParent, \"borderLeftWidth\", true);\n            }\n        }\n\n        // Subtract parent offsets and element margins\n        return {\n            top: offset.top - parentOffset.top - jQuery.css(elem, \"marginTop\", true),\n            left: offset.left - parentOffset.left - jQuery.css(elem, \"marginLeft\", true)\n        };\n    },\n\n    // This method will return documentElement in the following cases:\n    // 1) For the element inside the iframe without offsetParent, this method will return\n    //    documentElement of the parent window\n    // 2) For the hidden or detached element\n    // 3) For body or html element, i.e. in case of the html node - it will return itself\n    //\n    // but those exceptions were never presented as a real life use-cases\n    // and might be considered as more preferable results.\n    //\n    // This logic, however, is not guaranteed and can change at any point in the future\n    offsetParent: function () {\n        return this.map(function () {\n            var offsetParent = this.offsetParent;\n\n            while (offsetParent && jQuery.css(offsetParent, \"position\") === \"static\") {\n                offsetParent = offsetParent.offsetParent;\n            }\n\n            return offsetParent || documentElement;\n        });\n    }\n});\n\n// Create scrollLeft and scrollTop methods\njQuery.each({scrollLeft: \"pageXOffset\", scrollTop: \"pageYOffset\"}, function (method, prop) {\n    var top = \"pageYOffset\" === prop;\n\n    jQuery.fn[method] = function (val) {\n        return access(this, function (elem, method, val) {\n\n            // Coalesce documents and windows\n            var win;\n            if (isWindow(elem)) {\n                win = elem;\n            } else if (elem.nodeType === 9) {\n                win = elem.defaultView;\n            }\n\n            if (val === undefined) {\n                return win ? win[prop] : elem[method];\n            }\n\n            if (win) {\n                win.scrollTo(\n                    !top ? val : win.pageXOffset,\n                    top ? val : win.pageYOffset\n                );\n\n            } else {\n                elem[method] = val;\n            }\n        }, method, val, arguments.length);\n    };\n});\n\n// Support: Safari <=7 - 9.1, Chrome <=37 - 49\n// Add the top/left cssHooks using jQuery.fn.position\n// Webkit bug: https://bugs.webkit.org/show_bug.cgi?id=29084\n// Blink bug: https://bugs.chromium.org/p/chromium/issues/detail?id=589347\n// getComputedStyle returns percent when specified for top/left/bottom/right;\n// rather than make the css module depend on the offset module, just check for it here\njQuery.each([\"top\", \"left\"], function (i, prop) {\n    jQuery.cssHooks[prop] = addGetHookIf(support.pixelPosition,\n        function (elem, computed) {\n            if (computed) {\n                computed = curCSS(elem, prop);\n\n                // If curCSS returns percentage, fallback to offset\n                return rnumnonpx.test(computed) ?\n                    jQuery(elem).position()[prop] + \"px\" :\n                    computed;\n            }\n        }\n    );\n});\n\n\n// Create innerHeight, innerWidth, height, width, outerHeight and outerWidth methods\njQuery.each({Height: \"height\", Width: \"width\"}, function (name, type) {\n    jQuery.each({padding: \"inner\" + name, content: type, \"\": \"outer\" + name},\n        function (defaultExtra, funcName) {\n\n            // Margin is only for outerHeight, outerWidth\n            jQuery.fn[funcName] = function (margin, value) {\n                var chainable = arguments.length && (defaultExtra || typeof margin !== \"boolean\"),\n                    extra = defaultExtra || (margin === true || value === true ? \"margin\" : \"border\");\n\n                return access(this, function (elem, type, value) {\n                    var doc;\n\n                    if (isWindow(elem)) {\n\n                        // $( window ).outerWidth/Height return w/h including scrollbars (gh-1729)\n                        return funcName.indexOf(\"outer\") === 0 ?\n                            elem[\"inner\" + name] :\n                            elem.document.documentElement[\"client\" + name];\n                    }\n\n                    // Get document width or height\n                    if (elem.nodeType === 9) {\n                        doc = elem.documentElement;\n\n                        // Either scroll[Width/Height] or offset[Width/Height] or client[Width/Height],\n                        // whichever is greatest\n                        return Math.max(\n                            elem.body[\"scroll\" + name], doc[\"scroll\" + name],\n                            elem.body[\"offset\" + name], doc[\"offset\" + name],\n                            doc[\"client\" + name]\n                        );\n                    }\n\n                    return value === undefined ?\n\n                        // Get width or height on the element, requesting but not forcing parseFloat\n                        jQuery.css(elem, type, extra) :\n\n                        // Set width or height on the element\n                        jQuery.style(elem, type, value, extra);\n                }, type, chainable ? margin : undefined, chainable);\n            };\n        });\n});\n\n\njQuery.each((\"blur focus focusin focusout resize scroll click dblclick \" +\n    \"mousedown mouseup mousemove mouseover mouseout mouseenter mouseleave \" +\n    \"change select submit keydown keypress keyup contextmenu\").split(\" \"),\n    function (i, name) {\n\n        // Handle event binding\n        jQuery.fn[name] = function (data, fn) {\n            return arguments.length > 0 ?\n                this.on(name, null, data, fn) :\n                this.trigger(name);\n        };\n    });\n\njQuery.fn.extend({\n    hover: function (fnOver, fnOut) {\n        return this.mouseenter(fnOver).mouseleave(fnOut || fnOver);\n    }\n});\n\n\njQuery.fn.extend({\n\n    bind: function (types, data, fn) {\n        return this.on(types, null, data, fn);\n    },\n    unbind: function (types, fn) {\n        return this.off(types, null, fn);\n    },\n\n    delegate: function (selector, types, data, fn) {\n        return this.on(types, selector, data, fn);\n    },\n    undelegate: function (selector, types, fn) {\n\n        // ( namespace ) or ( selector, types [, fn] )\n        return arguments.length === 1 ?\n            this.off(selector, \"**\") :\n            this.off(types, selector || \"**\", fn);\n    }\n});\n\n// Bind a function to a context, optionally partially applying any\n// arguments.\n// jQuery.proxy is deprecated to promote standards (specifically Function#bind)\n// However, it is not slated for removal any time soon\njQuery.proxy = function (fn, context) {\n    var tmp, args, proxy;\n\n    if (typeof context === \"string\") {\n        tmp = fn[context];\n        context = fn;\n        fn = tmp;\n    }\n\n    // Quick check to determine if target is callable, in the spec\n    // this throws a TypeError, but we will just return undefined.\n    if (!isFunction(fn)) {\n        return undefined;\n    }\n\n    // Simulated bind\n    args = slice.call(arguments, 2);\n    proxy = function () {\n        return fn.apply(context || this, args.concat(slice.call(arguments)));\n    };\n\n    // Set the guid of unique handler to the same of original handler, so it can be removed\n    proxy.guid = fn.guid = fn.guid || jQuery.guid++;\n\n    return proxy;\n};\n\njQuery.holdReady = function (hold) {\n    if (hold) {\n        jQuery.readyWait++;\n    } else {\n        jQuery.ready(true);\n    }\n};\njQuery.isArray = Array.isArray;\njQuery.parseJSON = JSON.parse;\njQuery.nodeName = nodeName;\njQuery.isFunction = isFunction;\njQuery.isWindow = isWindow;\njQuery.camelCase = camelCase;\njQuery.type = toType;\n\njQuery.now = Date.now;\n\njQuery.isNumeric = function (obj) {\n\n    // As of jQuery 3.0, isNumeric is limited to\n    // strings and numbers (primitives or objects)\n    // that can be coerced to finite numbers (gh-2662)\n    var type = jQuery.type(obj);\n    return (type === \"number\" || type === \"string\") &&\n\n        // parseFloat NaNs numeric-cast false positives (\"\")\n        // ...but misinterprets leading-number strings, particularly hex literals (\"0x...\")\n        // subtraction forces infinities to NaN\n        !isNaN(obj - parseFloat(obj));\n};\n\nconst $ = jQuery;\n\nexport default $;","function div(options) {\n    return create$1(\"div\", options);\n}\n\nfunction create$1(tag, options) {\n    const elem = document.createElement(tag);\n    if (options) {\n        if (options.class) {\n            elem.classList.add(options.class);\n        }\n        if (options.id) {\n            elem.id = options.id;\n        }\n        if(options.style) {\n            applyStyle(elem, options.style);\n        }\n    }\n    return elem;\n}\n\nfunction hide(elem) {\n    const cssStyle = getComputedStyle(elem);\n    if(cssStyle.display !== \"none\") {\n        elem._initialDisplay = cssStyle.display;\n    }\n    elem.style.display = \"none\";\n}\n\nfunction show(elem) {\n    const currentDisplay = getComputedStyle(elem).display;\n    if (currentDisplay === \"none\") {\n        const d = elem._initialDisplay || \"block\";\n        elem.style.display = d;\n    }\n}\n\nfunction hideAll(selector) {\n    document.querySelectorAll(selector).forEach(elem => { hide(elem); });\n}\n\nfunction empty(elem) {\n    while(elem.firstChild){\n        elem.removeChild(elem.firstChild);\n    }\n}\n\nfunction offset(elem) {\n    // Return zeros for disconnected and hidden (display: none) elements (gh-2310)\n    // Support: IE <=11 only\n    // Running getBoundingClientRect on a\n    // disconnected node in IE throws an error\n    if (!elem.getClientRects().length) {\n        return {top: 0, left: 0};\n    }\n\n    // Get document-relative position by adding viewport scroll to viewport-relative gBCR\n    const rect = elem.getBoundingClientRect();\n    const win = elem.ownerDocument.defaultView;\n    return {\n        top: rect.top + win.pageYOffset,\n        left: rect.left + win.pageXOffset\n    };\n}\n\nfunction pageCoordinates(e) {\n\n    if (e.type.startsWith(\"touch\")) {\n        const touch = e.touches[0];\n        return {x: touch.pageX, y: touch.pageY};\n    } else {\n        return {x: e.pageX, y: e.pageY}\n    }\n}\n\nconst relativeDOMBBox = (parentElement, childElement) => {\n    const { x: x_p, y: y_p, width: width_p, height: height_p } = parentElement.getBoundingClientRect();\n    const { x: x_c, y: y_c, width: width_c, height: height_c } = childElement.getBoundingClientRect();\n    return { x: (x_c - x_p), y: (y_c - y_p), width: width_c, height:height_c };\n};\n\nfunction applyStyle(elem, style) {\n    for (let key of Object.keys(style)) {\n        elem.style[key] = style[key];\n    }\n}\n\nfunction guid  () {\n    return (\"0000\" + (Math.random() * Math.pow(36, 4) << 0).toString(36)).slice(-4);\n}\n\nlet getMouseXY = (domElement, { clientX, clientY }) => {\n\n    // DOMRect object with eight properties: left, top, right, bottom, x, y, width, height\n    const { left, top, width, height } = domElement.getBoundingClientRect();\n\n    const x = clientX - left;\n    const y = clientY - top;\n    return { x, y, xNormalized: x/width, yNormalized: y/height, width, height };\n\n};\n\n/**\n * Translate the mouse coordinates for the event to the coordinates for the given target element\n * @param event\n * @param domElement\n * @returns {{x: number, y: number}}\n */\nfunction translateMouseCoordinates(event, domElement) {\n\n    const { clientX, clientY } = event;\n    return getMouseXY(domElement, { clientX, clientY });\n\n}\n\nvar domUtils = /*#__PURE__*/Object.freeze({\n    __proto__: null,\n    applyStyle: applyStyle,\n    create: create$1,\n    div: div,\n    empty: empty,\n    guid: guid,\n    hide: hide,\n    hideAll: hideAll,\n    offset: offset,\n    pageCoordinates: pageCoordinates,\n    relativeDOMBBox: relativeDOMBBox,\n    show: show,\n    translateMouseCoordinates: translateMouseCoordinates\n});\n\n/*! @license DOMPurify 3.0.5 | (c) Cure53 and other contributors | Released under the Apache license 2.0 and Mozilla Public License 2.0 | github.com/cure53/DOMPurify/blob/3.0.5/LICENSE */\n\nconst {\n  entries,\n  setPrototypeOf,\n  isFrozen,\n  getPrototypeOf,\n  getOwnPropertyDescriptor\n} = Object;\nlet {\n  freeze,\n  seal,\n  create\n} = Object; // eslint-disable-line import/no-mutable-exports\n\nlet {\n  apply,\n  construct\n} = typeof Reflect !== 'undefined' && Reflect;\n\nif (!apply) {\n  apply = function apply(fun, thisValue, args) {\n    return fun.apply(thisValue, args);\n  };\n}\n\nif (!freeze) {\n  freeze = function freeze(x) {\n    return x;\n  };\n}\n\nif (!seal) {\n  seal = function seal(x) {\n    return x;\n  };\n}\n\nif (!construct) {\n  construct = function construct(Func, args) {\n    return new Func(...args);\n  };\n}\n\nconst arrayForEach = unapply(Array.prototype.forEach);\nconst arrayPop = unapply(Array.prototype.pop);\nconst arrayPush = unapply(Array.prototype.push);\nconst stringToLowerCase = unapply(String.prototype.toLowerCase);\nconst stringToString = unapply(String.prototype.toString);\nconst stringMatch = unapply(String.prototype.match);\nconst stringReplace = unapply(String.prototype.replace);\nconst stringIndexOf = unapply(String.prototype.indexOf);\nconst stringTrim = unapply(String.prototype.trim);\nconst regExpTest = unapply(RegExp.prototype.test);\nconst typeErrorCreate = unconstruct(TypeError);\nfunction unapply(func) {\n  return function (thisArg) {\n    for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {\n      args[_key - 1] = arguments[_key];\n    }\n\n    return apply(func, thisArg, args);\n  };\n}\nfunction unconstruct(func) {\n  return function () {\n    for (var _len2 = arguments.length, args = new Array(_len2), _key2 = 0; _key2 < _len2; _key2++) {\n      args[_key2] = arguments[_key2];\n    }\n\n    return construct(func, args);\n  };\n}\n/* Add properties to a lookup table */\n\nfunction addToSet(set, array, transformCaseFunc) {\n  var _transformCaseFunc;\n\n  transformCaseFunc = (_transformCaseFunc = transformCaseFunc) !== null && _transformCaseFunc !== void 0 ? _transformCaseFunc : stringToLowerCase;\n\n  if (setPrototypeOf) {\n    // Make 'in' and truthy checks like Boolean(set.constructor)\n    // independent of any properties defined on Object.prototype.\n    // Prevent prototype setters from intercepting set as a this value.\n    setPrototypeOf(set, null);\n  }\n\n  let l = array.length;\n\n  while (l--) {\n    let element = array[l];\n\n    if (typeof element === 'string') {\n      const lcElement = transformCaseFunc(element);\n\n      if (lcElement !== element) {\n        // Config presets (e.g. tags.js, attrs.js) are immutable.\n        if (!isFrozen(array)) {\n          array[l] = lcElement;\n        }\n\n        element = lcElement;\n      }\n    }\n\n    set[element] = true;\n  }\n\n  return set;\n}\n/* Shallow clone an object */\n\nfunction clone(object) {\n  const newObject = create(null);\n\n  for (const [property, value] of entries(object)) {\n    newObject[property] = value;\n  }\n\n  return newObject;\n}\n/* This method automatically checks if the prop is function\n * or getter and behaves accordingly. */\n\nfunction lookupGetter(object, prop) {\n  while (object !== null) {\n    const desc = getOwnPropertyDescriptor(object, prop);\n\n    if (desc) {\n      if (desc.get) {\n        return unapply(desc.get);\n      }\n\n      if (typeof desc.value === 'function') {\n        return unapply(desc.value);\n      }\n    }\n\n    object = getPrototypeOf(object);\n  }\n\n  function fallbackValue(element) {\n    console.warn('fallback value for', element);\n    return null;\n  }\n\n  return fallbackValue;\n}\n\nconst html$1 = freeze(['a', 'abbr', 'acronym', 'address', 'area', 'article', 'aside', 'audio', 'b', 'bdi', 'bdo', 'big', 'blink', 'blockquote', 'body', 'br', 'button', 'canvas', 'caption', 'center', 'cite', 'code', 'col', 'colgroup', 'content', 'data', 'datalist', 'dd', 'decorator', 'del', 'details', 'dfn', 'dialog', 'dir', 'div', 'dl', 'dt', 'element', 'em', 'fieldset', 'figcaption', 'figure', 'font', 'footer', 'form', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'i', 'img', 'input', 'ins', 'kbd', 'label', 'legend', 'li', 'main', 'map', 'mark', 'marquee', 'menu', 'menuitem', 'meter', 'nav', 'nobr', 'ol', 'optgroup', 'option', 'output', 'p', 'picture', 'pre', 'progress', 'q', 'rp', 'rt', 'ruby', 's', 'samp', 'section', 'select', 'shadow', 'small', 'source', 'spacer', 'span', 'strike', 'strong', 'style', 'sub', 'summary', 'sup', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'time', 'tr', 'track', 'tt', 'u', 'ul', 'var', 'video', 'wbr']); // SVG\n\nconst svg$1 = freeze(['svg', 'a', 'altglyph', 'altglyphdef', 'altglyphitem', 'animatecolor', 'animatemotion', 'animatetransform', 'circle', 'clippath', 'defs', 'desc', 'ellipse', 'filter', 'font', 'g', 'glyph', 'glyphref', 'hkern', 'image', 'line', 'lineargradient', 'marker', 'mask', 'metadata', 'mpath', 'path', 'pattern', 'polygon', 'polyline', 'radialgradient', 'rect', 'stop', 'style', 'switch', 'symbol', 'text', 'textpath', 'title', 'tref', 'tspan', 'view', 'vkern']);\nconst svgFilters = freeze(['feBlend', 'feColorMatrix', 'feComponentTransfer', 'feComposite', 'feConvolveMatrix', 'feDiffuseLighting', 'feDisplacementMap', 'feDistantLight', 'feDropShadow', 'feFlood', 'feFuncA', 'feFuncB', 'feFuncG', 'feFuncR', 'feGaussianBlur', 'feImage', 'feMerge', 'feMergeNode', 'feMorphology', 'feOffset', 'fePointLight', 'feSpecularLighting', 'feSpotLight', 'feTile', 'feTurbulence']); // List of SVG elements that are disallowed by default.\n// We still need to know them so that we can do namespace\n// checks properly in case one wants to add them to\n// allow-list.\n\nconst svgDisallowed = freeze(['animate', 'color-profile', 'cursor', 'discard', 'font-face', 'font-face-format', 'font-face-name', 'font-face-src', 'font-face-uri', 'foreignobject', 'hatch', 'hatchpath', 'mesh', 'meshgradient', 'meshpatch', 'meshrow', 'missing-glyph', 'script', 'set', 'solidcolor', 'unknown', 'use']);\nconst mathMl$1 = freeze(['math', 'menclose', 'merror', 'mfenced', 'mfrac', 'mglyph', 'mi', 'mlabeledtr', 'mmultiscripts', 'mn', 'mo', 'mover', 'mpadded', 'mphantom', 'mroot', 'mrow', 'ms', 'mspace', 'msqrt', 'mstyle', 'msub', 'msup', 'msubsup', 'mtable', 'mtd', 'mtext', 'mtr', 'munder', 'munderover', 'mprescripts']); // Similarly to SVG, we want to know all MathML elements,\n// even those that we disallow by default.\n\nconst mathMlDisallowed = freeze(['maction', 'maligngroup', 'malignmark', 'mlongdiv', 'mscarries', 'mscarry', 'msgroup', 'mstack', 'msline', 'msrow', 'semantics', 'annotation', 'annotation-xml', 'mprescripts', 'none']);\nconst text = freeze(['#text']);\n\nconst html = freeze(['accept', 'action', 'align', 'alt', 'autocapitalize', 'autocomplete', 'autopictureinpicture', 'autoplay', 'background', 'bgcolor', 'border', 'capture', 'cellpadding', 'cellspacing', 'checked', 'cite', 'class', 'clear', 'color', 'cols', 'colspan', 'controls', 'controlslist', 'coords', 'crossorigin', 'datetime', 'decoding', 'default', 'dir', 'disabled', 'disablepictureinpicture', 'disableremoteplayback', 'download', 'draggable', 'enctype', 'enterkeyhint', 'face', 'for', 'headers', 'height', 'hidden', 'high', 'href', 'hreflang', 'id', 'inputmode', 'integrity', 'ismap', 'kind', 'label', 'lang', 'list', 'loading', 'loop', 'low', 'max', 'maxlength', 'media', 'method', 'min', 'minlength', 'multiple', 'muted', 'name', 'nonce', 'noshade', 'novalidate', 'nowrap', 'open', 'optimum', 'pattern', 'placeholder', 'playsinline', 'poster', 'preload', 'pubdate', 'radiogroup', 'readonly', 'rel', 'required', 'rev', 'reversed', 'role', 'rows', 'rowspan', 'spellcheck', 'scope', 'selected', 'shape', 'size', 'sizes', 'span', 'srclang', 'start', 'src', 'srcset', 'step', 'style', 'summary', 'tabindex', 'title', 'translate', 'type', 'usemap', 'valign', 'value', 'width', 'xmlns', 'slot']);\nconst svg = freeze(['accent-height', 'accumulate', 'additive', 'alignment-baseline', 'ascent', 'attributename', 'attributetype', 'azimuth', 'basefrequency', 'baseline-shift', 'begin', 'bias', 'by', 'class', 'clip', 'clippathunits', 'clip-path', 'clip-rule', 'color', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'cx', 'cy', 'd', 'dx', 'dy', 'diffuseconstant', 'direction', 'display', 'divisor', 'dur', 'edgemode', 'elevation', 'end', 'fill', 'fill-opacity', 'fill-rule', 'filter', 'filterunits', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'fx', 'fy', 'g1', 'g2', 'glyph-name', 'glyphref', 'gradientunits', 'gradienttransform', 'height', 'href', 'id', 'image-rendering', 'in', 'in2', 'k', 'k1', 'k2', 'k3', 'k4', 'kerning', 'keypoints', 'keysplines', 'keytimes', 'lang', 'lengthadjust', 'letter-spacing', 'kernelmatrix', 'kernelunitlength', 'lighting-color', 'local', 'marker-end', 'marker-mid', 'marker-start', 'markerheight', 'markerunits', 'markerwidth', 'maskcontentunits', 'maskunits', 'max', 'mask', 'media', 'method', 'mode', 'min', 'name', 'numoctaves', 'offset', 'operator', 'opacity', 'order', 'orient', 'orientation', 'origin', 'overflow', 'paint-order', 'path', 'pathlength', 'patterncontentunits', 'patterntransform', 'patternunits', 'points', 'preservealpha', 'preserveaspectratio', 'primitiveunits', 'r', 'rx', 'ry', 'radius', 'refx', 'refy', 'repeatcount', 'repeatdur', 'restart', 'result', 'rotate', 'scale', 'seed', 'shape-rendering', 'specularconstant', 'specularexponent', 'spreadmethod', 'startoffset', 'stddeviation', 'stitchtiles', 'stop-color', 'stop-opacity', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke', 'stroke-width', 'style', 'surfacescale', 'systemlanguage', 'tabindex', 'targetx', 'targety', 'transform', 'transform-origin', 'text-anchor', 'text-decoration', 'text-rendering', 'textlength', 'type', 'u1', 'u2', 'unicode', 'values', 'viewbox', 'visibility', 'version', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'width', 'word-spacing', 'wrap', 'writing-mode', 'xchannelselector', 'ychannelselector', 'x', 'x1', 'x2', 'xmlns', 'y', 'y1', 'y2', 'z', 'zoomandpan']);\nconst mathMl = freeze(['accent', 'accentunder', 'align', 'bevelled', 'close', 'columnsalign', 'columnlines', 'columnspan', 'denomalign', 'depth', 'dir', 'display', 'displaystyle', 'encoding', 'fence', 'frame', 'height', 'href', 'id', 'largeop', 'length', 'linethickness', 'lspace', 'lquote', 'mathbackground', 'mathcolor', 'mathsize', 'mathvariant', 'maxsize', 'minsize', 'movablelimits', 'notation', 'numalign', 'open', 'rowalign', 'rowlines', 'rowspacing', 'rowspan', 'rspace', 'rquote', 'scriptlevel', 'scriptminsize', 'scriptsizemultiplier', 'selection', 'separator', 'separators', 'stretchy', 'subscriptshift', 'supscriptshift', 'symmetric', 'voffset', 'width', 'xmlns']);\nconst xml = freeze(['xlink:href', 'xml:id', 'xlink:title', 'xml:space', 'xmlns:xlink']);\n\nconst MUSTACHE_EXPR = seal(/\\{\\{[\\w\\W]*|[\\w\\W]*\\}\\}/gm); // Specify template detection regex for SAFE_FOR_TEMPLATES mode\n\nconst ERB_EXPR = seal(/<%[\\w\\W]*|[\\w\\W]*%>/gm);\nconst TMPLIT_EXPR = seal(/\\${[\\w\\W]*}/gm);\nconst DATA_ATTR = seal(/^data-[\\-\\w.\\u00B7-\\uFFFF]/); // eslint-disable-line no-useless-escape\n\nconst ARIA_ATTR = seal(/^aria-[\\-\\w]+$/); // eslint-disable-line no-useless-escape\n\nconst IS_ALLOWED_URI = seal(/^(?:(?:(?:f|ht)tps?|mailto|tel|callto|sms|cid|xmpp):|[^a-z]|[a-z+.\\-]+(?:[^a-z+.\\-:]|$))/i // eslint-disable-line no-useless-escape\n);\nconst IS_SCRIPT_OR_DATA = seal(/^(?:\\w+script|data):/i);\nconst ATTR_WHITESPACE = seal(/[\\u0000-\\u0020\\u00A0\\u1680\\u180E\\u2000-\\u2029\\u205F\\u3000]/g // eslint-disable-line no-control-regex\n);\nconst DOCTYPE_NAME = seal(/^html$/i);\n\nvar EXPRESSIONS = /*#__PURE__*/Object.freeze({\n  __proto__: null,\n  MUSTACHE_EXPR: MUSTACHE_EXPR,\n  ERB_EXPR: ERB_EXPR,\n  TMPLIT_EXPR: TMPLIT_EXPR,\n  DATA_ATTR: DATA_ATTR,\n  ARIA_ATTR: ARIA_ATTR,\n  IS_ALLOWED_URI: IS_ALLOWED_URI,\n  IS_SCRIPT_OR_DATA: IS_SCRIPT_OR_DATA,\n  ATTR_WHITESPACE: ATTR_WHITESPACE,\n  DOCTYPE_NAME: DOCTYPE_NAME\n});\n\nconst getGlobal = () => typeof window === 'undefined' ? null : window;\n/**\n * Creates a no-op policy for internal use only.\n * Don't export this function outside this module!\n * @param {?TrustedTypePolicyFactory} trustedTypes The policy factory.\n * @param {HTMLScriptElement} purifyHostElement The Script element used to load DOMPurify (to determine policy name suffix).\n * @return {?TrustedTypePolicy} The policy created (or null, if Trusted Types\n * are not supported or creating the policy failed).\n */\n\n\nconst _createTrustedTypesPolicy = function _createTrustedTypesPolicy(trustedTypes, purifyHostElement) {\n  if (typeof trustedTypes !== 'object' || typeof trustedTypes.createPolicy !== 'function') {\n    return null;\n  } // Allow the callers to control the unique policy name\n  // by adding a data-tt-policy-suffix to the script element with the DOMPurify.\n  // Policy creation with duplicate names throws in Trusted Types.\n\n\n  let suffix = null;\n  const ATTR_NAME = 'data-tt-policy-suffix';\n\n  if (purifyHostElement && purifyHostElement.hasAttribute(ATTR_NAME)) {\n    suffix = purifyHostElement.getAttribute(ATTR_NAME);\n  }\n\n  const policyName = 'dompurify' + (suffix ? '#' + suffix : '');\n\n  try {\n    return trustedTypes.createPolicy(policyName, {\n      createHTML(html) {\n        return html;\n      },\n\n      createScriptURL(scriptUrl) {\n        return scriptUrl;\n      }\n\n    });\n  } catch (_) {\n    // Policy creation failed (most likely another DOMPurify script has\n    // already run). Skip creating the policy, as this will only cause errors\n    // if TT are enforced.\n    console.warn('TrustedTypes policy ' + policyName + ' could not be created.');\n    return null;\n  }\n};\n\nfunction createDOMPurify() {\n  let window = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : getGlobal();\n\n  const DOMPurify = root => createDOMPurify(root);\n  /**\n   * Version label, exposed for easier checks\n   * if DOMPurify is up to date or not\n   */\n\n\n  DOMPurify.version = '3.0.5';\n  /**\n   * Array of elements that DOMPurify removed during sanitation.\n   * Empty if nothing was removed.\n   */\n\n  DOMPurify.removed = [];\n\n  if (!window || !window.document || window.document.nodeType !== 9) {\n    // Not running in a browser, provide a factory function\n    // so that you can pass your own Window\n    DOMPurify.isSupported = false;\n    return DOMPurify;\n  }\n\n  const originalDocument = window.document;\n  const currentScript = originalDocument.currentScript;\n  let {\n    document\n  } = window;\n  const {\n    DocumentFragment,\n    HTMLTemplateElement,\n    Node,\n    Element,\n    NodeFilter,\n    NamedNodeMap = window.NamedNodeMap || window.MozNamedAttrMap,\n    HTMLFormElement,\n    DOMParser,\n    trustedTypes\n  } = window;\n  const ElementPrototype = Element.prototype;\n  const cloneNode = lookupGetter(ElementPrototype, 'cloneNode');\n  const getNextSibling = lookupGetter(ElementPrototype, 'nextSibling');\n  const getChildNodes = lookupGetter(ElementPrototype, 'childNodes');\n  const getParentNode = lookupGetter(ElementPrototype, 'parentNode'); // As per issue #47, the web-components registry is inherited by a\n  // new document created via createHTMLDocument. As per the spec\n  // (http://w3c.github.io/webcomponents/spec/custom/#creating-and-passing-registries)\n  // a new empty registry is used when creating a template contents owner\n  // document, so we use that as our parent document to ensure nothing\n  // is inherited.\n\n  if (typeof HTMLTemplateElement === 'function') {\n    const template = document.createElement('template');\n\n    if (template.content && template.content.ownerDocument) {\n      document = template.content.ownerDocument;\n    }\n  }\n\n  let trustedTypesPolicy;\n  let emptyHTML = '';\n  const {\n    implementation,\n    createNodeIterator,\n    createDocumentFragment,\n    getElementsByTagName\n  } = document;\n  const {\n    importNode\n  } = originalDocument;\n  let hooks = {};\n  /**\n   * Expose whether this browser supports running the full DOMPurify.\n   */\n\n  DOMPurify.isSupported = typeof entries === 'function' && typeof getParentNode === 'function' && implementation && implementation.createHTMLDocument !== undefined;\n  const {\n    MUSTACHE_EXPR,\n    ERB_EXPR,\n    TMPLIT_EXPR,\n    DATA_ATTR,\n    ARIA_ATTR,\n    IS_SCRIPT_OR_DATA,\n    ATTR_WHITESPACE\n  } = EXPRESSIONS;\n  let {\n    IS_ALLOWED_URI: IS_ALLOWED_URI$1\n  } = EXPRESSIONS;\n  /**\n   * We consider the elements and attributes below to be safe. Ideally\n   * don't add any new ones but feel free to remove unwanted ones.\n   */\n\n  /* allowed element names */\n\n  let ALLOWED_TAGS = null;\n  const DEFAULT_ALLOWED_TAGS = addToSet({}, [...html$1, ...svg$1, ...svgFilters, ...mathMl$1, ...text]);\n  /* Allowed attribute names */\n\n  let ALLOWED_ATTR = null;\n  const DEFAULT_ALLOWED_ATTR = addToSet({}, [...html, ...svg, ...mathMl, ...xml]);\n  /*\n   * Configure how DOMPUrify should handle custom elements and their attributes as well as customized built-in elements.\n   * @property {RegExp|Function|null} tagNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any custom elements)\n   * @property {RegExp|Function|null} attributeNameCheck one of [null, regexPattern, predicate]. Default: `null` (disallow any attributes not on the allow list)\n   * @property {boolean} allowCustomizedBuiltInElements allow custom elements derived from built-ins if they pass CUSTOM_ELEMENT_HANDLING.tagNameCheck. Default: `false`.\n   */\n\n  let CUSTOM_ELEMENT_HANDLING = Object.seal(Object.create(null, {\n    tagNameCheck: {\n      writable: true,\n      configurable: false,\n      enumerable: true,\n      value: null\n    },\n    attributeNameCheck: {\n      writable: true,\n      configurable: false,\n      enumerable: true,\n      value: null\n    },\n    allowCustomizedBuiltInElements: {\n      writable: true,\n      configurable: false,\n      enumerable: true,\n      value: false\n    }\n  }));\n  /* Explicitly forbidden tags (overrides ALLOWED_TAGS/ADD_TAGS) */\n\n  let FORBID_TAGS = null;\n  /* Explicitly forbidden attributes (overrides ALLOWED_ATTR/ADD_ATTR) */\n\n  let FORBID_ATTR = null;\n  /* Decide if ARIA attributes are okay */\n\n  let ALLOW_ARIA_ATTR = true;\n  /* Decide if custom data attributes are okay */\n\n  let ALLOW_DATA_ATTR = true;\n  /* Decide if unknown protocols are okay */\n\n  let ALLOW_UNKNOWN_PROTOCOLS = false;\n  /* Decide if self-closing tags in attributes are allowed.\n   * Usually removed due to a mXSS issue in jQuery 3.0 */\n\n  let ALLOW_SELF_CLOSE_IN_ATTR = true;\n  /* Output should be safe for common template engines.\n   * This means, DOMPurify removes data attributes, mustaches and ERB\n   */\n\n  let SAFE_FOR_TEMPLATES = false;\n  /* Decide if document with <html>... should be returned */\n\n  let WHOLE_DOCUMENT = false;\n  /* Track whether config is already set on this instance of DOMPurify. */\n\n  let SET_CONFIG = false;\n  /* Decide if all elements (e.g. style, script) must be children of\n   * document.body. By default, browsers might move them to document.head */\n\n  let FORCE_BODY = false;\n  /* Decide if a DOM `HTMLBodyElement` should be returned, instead of a html\n   * string (or a TrustedHTML object if Trusted Types are supported).\n   * If `WHOLE_DOCUMENT` is enabled a `HTMLHtmlElement` will be returned instead\n   */\n\n  let RETURN_DOM = false;\n  /* Decide if a DOM `DocumentFragment` should be returned, instead of a html\n   * string  (or a TrustedHTML object if Trusted Types are supported) */\n\n  let RETURN_DOM_FRAGMENT = false;\n  /* Try to return a Trusted Type object instead of a string, return a string in\n   * case Trusted Types are not supported  */\n\n  let RETURN_TRUSTED_TYPE = false;\n  /* Output should be free from DOM clobbering attacks?\n   * This sanitizes markups named with colliding, clobberable built-in DOM APIs.\n   */\n\n  let SANITIZE_DOM = true;\n  /* Achieve full DOM Clobbering protection by isolating the namespace of named\n   * properties and JS variables, mitigating attacks that abuse the HTML/DOM spec rules.\n   *\n   * HTML/DOM spec rules that enable DOM Clobbering:\n   *   - Named Access on Window (§7.3.3)\n   *   - DOM Tree Accessors (§3.1.5)\n   *   - Form Element Parent-Child Relations (§4.10.3)\n   *   - Iframe srcdoc / Nested WindowProxies (§4.8.5)\n   *   - HTMLCollection (§4.2.10.2)\n   *\n   * Namespace isolation is implemented by prefixing `id` and `name` attributes\n   * with a constant string, i.e., `user-content-`\n   */\n\n  let SANITIZE_NAMED_PROPS = false;\n  const SANITIZE_NAMED_PROPS_PREFIX = 'user-content-';\n  /* Keep element content when removing element? */\n\n  let KEEP_CONTENT = true;\n  /* If a `Node` is passed to sanitize(), then performs sanitization in-place instead\n   * of importing it into a new Document and returning a sanitized copy */\n\n  let IN_PLACE = false;\n  /* Allow usage of profiles like html, svg and mathMl */\n\n  let USE_PROFILES = {};\n  /* Tags to ignore content of when KEEP_CONTENT is true */\n\n  let FORBID_CONTENTS = null;\n  const DEFAULT_FORBID_CONTENTS = addToSet({}, ['annotation-xml', 'audio', 'colgroup', 'desc', 'foreignobject', 'head', 'iframe', 'math', 'mi', 'mn', 'mo', 'ms', 'mtext', 'noembed', 'noframes', 'noscript', 'plaintext', 'script', 'style', 'svg', 'template', 'thead', 'title', 'video', 'xmp']);\n  /* Tags that are safe for data: URIs */\n\n  let DATA_URI_TAGS = null;\n  const DEFAULT_DATA_URI_TAGS = addToSet({}, ['audio', 'video', 'img', 'source', 'image', 'track']);\n  /* Attributes safe for values like \"javascript:\" */\n\n  let URI_SAFE_ATTRIBUTES = null;\n  const DEFAULT_URI_SAFE_ATTRIBUTES = addToSet({}, ['alt', 'class', 'for', 'id', 'label', 'name', 'pattern', 'placeholder', 'role', 'summary', 'title', 'value', 'style', 'xmlns']);\n  const MATHML_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';\n  const SVG_NAMESPACE = 'http://www.w3.org/2000/svg';\n  const HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';\n  /* Document namespace */\n\n  let NAMESPACE = HTML_NAMESPACE;\n  let IS_EMPTY_INPUT = false;\n  /* Allowed XHTML+XML namespaces */\n\n  let ALLOWED_NAMESPACES = null;\n  const DEFAULT_ALLOWED_NAMESPACES = addToSet({}, [MATHML_NAMESPACE, SVG_NAMESPACE, HTML_NAMESPACE], stringToString);\n  /* Parsing of strict XHTML documents */\n\n  let PARSER_MEDIA_TYPE;\n  const SUPPORTED_PARSER_MEDIA_TYPES = ['application/xhtml+xml', 'text/html'];\n  const DEFAULT_PARSER_MEDIA_TYPE = 'text/html';\n  let transformCaseFunc;\n  /* Keep a reference to config to pass to hooks */\n\n  let CONFIG = null;\n  /* Ideally, do not touch anything below this line */\n\n  /* ______________________________________________ */\n\n  const formElement = document.createElement('form');\n\n  const isRegexOrFunction = function isRegexOrFunction(testValue) {\n    return testValue instanceof RegExp || testValue instanceof Function;\n  };\n  /**\n   * _parseConfig\n   *\n   * @param  {Object} cfg optional config literal\n   */\n  // eslint-disable-next-line complexity\n\n\n  const _parseConfig = function _parseConfig(cfg) {\n    if (CONFIG && CONFIG === cfg) {\n      return;\n    }\n    /* Shield configuration object from tampering */\n\n\n    if (!cfg || typeof cfg !== 'object') {\n      cfg = {};\n    }\n    /* Shield configuration object from prototype pollution */\n\n\n    cfg = clone(cfg);\n    PARSER_MEDIA_TYPE = // eslint-disable-next-line unicorn/prefer-includes\n    SUPPORTED_PARSER_MEDIA_TYPES.indexOf(cfg.PARSER_MEDIA_TYPE) === -1 ? PARSER_MEDIA_TYPE = DEFAULT_PARSER_MEDIA_TYPE : PARSER_MEDIA_TYPE = cfg.PARSER_MEDIA_TYPE; // HTML tags and attributes are not case-sensitive, converting to lowercase. Keeping XHTML as is.\n\n    transformCaseFunc = PARSER_MEDIA_TYPE === 'application/xhtml+xml' ? stringToString : stringToLowerCase;\n    /* Set configuration parameters */\n\n    ALLOWED_TAGS = 'ALLOWED_TAGS' in cfg ? addToSet({}, cfg.ALLOWED_TAGS, transformCaseFunc) : DEFAULT_ALLOWED_TAGS;\n    ALLOWED_ATTR = 'ALLOWED_ATTR' in cfg ? addToSet({}, cfg.ALLOWED_ATTR, transformCaseFunc) : DEFAULT_ALLOWED_ATTR;\n    ALLOWED_NAMESPACES = 'ALLOWED_NAMESPACES' in cfg ? addToSet({}, cfg.ALLOWED_NAMESPACES, stringToString) : DEFAULT_ALLOWED_NAMESPACES;\n    URI_SAFE_ATTRIBUTES = 'ADD_URI_SAFE_ATTR' in cfg ? addToSet(clone(DEFAULT_URI_SAFE_ATTRIBUTES), // eslint-disable-line indent\n    cfg.ADD_URI_SAFE_ATTR, // eslint-disable-line indent\n    transformCaseFunc // eslint-disable-line indent\n    ) // eslint-disable-line indent\n    : DEFAULT_URI_SAFE_ATTRIBUTES;\n    DATA_URI_TAGS = 'ADD_DATA_URI_TAGS' in cfg ? addToSet(clone(DEFAULT_DATA_URI_TAGS), // eslint-disable-line indent\n    cfg.ADD_DATA_URI_TAGS, // eslint-disable-line indent\n    transformCaseFunc // eslint-disable-line indent\n    ) // eslint-disable-line indent\n    : DEFAULT_DATA_URI_TAGS;\n    FORBID_CONTENTS = 'FORBID_CONTENTS' in cfg ? addToSet({}, cfg.FORBID_CONTENTS, transformCaseFunc) : DEFAULT_FORBID_CONTENTS;\n    FORBID_TAGS = 'FORBID_TAGS' in cfg ? addToSet({}, cfg.FORBID_TAGS, transformCaseFunc) : {};\n    FORBID_ATTR = 'FORBID_ATTR' in cfg ? addToSet({}, cfg.FORBID_ATTR, transformCaseFunc) : {};\n    USE_PROFILES = 'USE_PROFILES' in cfg ? cfg.USE_PROFILES : false;\n    ALLOW_ARIA_ATTR = cfg.ALLOW_ARIA_ATTR !== false; // Default true\n\n    ALLOW_DATA_ATTR = cfg.ALLOW_DATA_ATTR !== false; // Default true\n\n    ALLOW_UNKNOWN_PROTOCOLS = cfg.ALLOW_UNKNOWN_PROTOCOLS || false; // Default false\n\n    ALLOW_SELF_CLOSE_IN_ATTR = cfg.ALLOW_SELF_CLOSE_IN_ATTR !== false; // Default true\n\n    SAFE_FOR_TEMPLATES = cfg.SAFE_FOR_TEMPLATES || false; // Default false\n\n    WHOLE_DOCUMENT = cfg.WHOLE_DOCUMENT || false; // Default false\n\n    RETURN_DOM = cfg.RETURN_DOM || false; // Default false\n\n    RETURN_DOM_FRAGMENT = cfg.RETURN_DOM_FRAGMENT || false; // Default false\n\n    RETURN_TRUSTED_TYPE = cfg.RETURN_TRUSTED_TYPE || false; // Default false\n\n    FORCE_BODY = cfg.FORCE_BODY || false; // Default false\n\n    SANITIZE_DOM = cfg.SANITIZE_DOM !== false; // Default true\n\n    SANITIZE_NAMED_PROPS = cfg.SANITIZE_NAMED_PROPS || false; // Default false\n\n    KEEP_CONTENT = cfg.KEEP_CONTENT !== false; // Default true\n\n    IN_PLACE = cfg.IN_PLACE || false; // Default false\n\n    IS_ALLOWED_URI$1 = cfg.ALLOWED_URI_REGEXP || IS_ALLOWED_URI;\n    NAMESPACE = cfg.NAMESPACE || HTML_NAMESPACE;\n    CUSTOM_ELEMENT_HANDLING = cfg.CUSTOM_ELEMENT_HANDLING || {};\n\n    if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck)) {\n      CUSTOM_ELEMENT_HANDLING.tagNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.tagNameCheck;\n    }\n\n    if (cfg.CUSTOM_ELEMENT_HANDLING && isRegexOrFunction(cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck)) {\n      CUSTOM_ELEMENT_HANDLING.attributeNameCheck = cfg.CUSTOM_ELEMENT_HANDLING.attributeNameCheck;\n    }\n\n    if (cfg.CUSTOM_ELEMENT_HANDLING && typeof cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements === 'boolean') {\n      CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements = cfg.CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements;\n    }\n\n    if (SAFE_FOR_TEMPLATES) {\n      ALLOW_DATA_ATTR = false;\n    }\n\n    if (RETURN_DOM_FRAGMENT) {\n      RETURN_DOM = true;\n    }\n    /* Parse profile info */\n\n\n    if (USE_PROFILES) {\n      ALLOWED_TAGS = addToSet({}, [...text]);\n      ALLOWED_ATTR = [];\n\n      if (USE_PROFILES.html === true) {\n        addToSet(ALLOWED_TAGS, html$1);\n        addToSet(ALLOWED_ATTR, html);\n      }\n\n      if (USE_PROFILES.svg === true) {\n        addToSet(ALLOWED_TAGS, svg$1);\n        addToSet(ALLOWED_ATTR, svg);\n        addToSet(ALLOWED_ATTR, xml);\n      }\n\n      if (USE_PROFILES.svgFilters === true) {\n        addToSet(ALLOWED_TAGS, svgFilters);\n        addToSet(ALLOWED_ATTR, svg);\n        addToSet(ALLOWED_ATTR, xml);\n      }\n\n      if (USE_PROFILES.mathMl === true) {\n        addToSet(ALLOWED_TAGS, mathMl$1);\n        addToSet(ALLOWED_ATTR, mathMl);\n        addToSet(ALLOWED_ATTR, xml);\n      }\n    }\n    /* Merge configuration parameters */\n\n\n    if (cfg.ADD_TAGS) {\n      if (ALLOWED_TAGS === DEFAULT_ALLOWED_TAGS) {\n        ALLOWED_TAGS = clone(ALLOWED_TAGS);\n      }\n\n      addToSet(ALLOWED_TAGS, cfg.ADD_TAGS, transformCaseFunc);\n    }\n\n    if (cfg.ADD_ATTR) {\n      if (ALLOWED_ATTR === DEFAULT_ALLOWED_ATTR) {\n        ALLOWED_ATTR = clone(ALLOWED_ATTR);\n      }\n\n      addToSet(ALLOWED_ATTR, cfg.ADD_ATTR, transformCaseFunc);\n    }\n\n    if (cfg.ADD_URI_SAFE_ATTR) {\n      addToSet(URI_SAFE_ATTRIBUTES, cfg.ADD_URI_SAFE_ATTR, transformCaseFunc);\n    }\n\n    if (cfg.FORBID_CONTENTS) {\n      if (FORBID_CONTENTS === DEFAULT_FORBID_CONTENTS) {\n        FORBID_CONTENTS = clone(FORBID_CONTENTS);\n      }\n\n      addToSet(FORBID_CONTENTS, cfg.FORBID_CONTENTS, transformCaseFunc);\n    }\n    /* Add #text in case KEEP_CONTENT is set to true */\n\n\n    if (KEEP_CONTENT) {\n      ALLOWED_TAGS['#text'] = true;\n    }\n    /* Add html, head and body to ALLOWED_TAGS in case WHOLE_DOCUMENT is true */\n\n\n    if (WHOLE_DOCUMENT) {\n      addToSet(ALLOWED_TAGS, ['html', 'head', 'body']);\n    }\n    /* Add tbody to ALLOWED_TAGS in case tables are permitted, see #286, #365 */\n\n\n    if (ALLOWED_TAGS.table) {\n      addToSet(ALLOWED_TAGS, ['tbody']);\n      delete FORBID_TAGS.tbody;\n    }\n\n    if (cfg.TRUSTED_TYPES_POLICY) {\n      if (typeof cfg.TRUSTED_TYPES_POLICY.createHTML !== 'function') {\n        throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a \"createHTML\" hook.');\n      }\n\n      if (typeof cfg.TRUSTED_TYPES_POLICY.createScriptURL !== 'function') {\n        throw typeErrorCreate('TRUSTED_TYPES_POLICY configuration option must provide a \"createScriptURL\" hook.');\n      } // Overwrite existing TrustedTypes policy.\n\n\n      trustedTypesPolicy = cfg.TRUSTED_TYPES_POLICY; // Sign local variables required by `sanitize`.\n\n      emptyHTML = trustedTypesPolicy.createHTML('');\n    } else {\n      // Uninitialized policy, attempt to initialize the internal dompurify policy.\n      if (trustedTypesPolicy === undefined) {\n        trustedTypesPolicy = _createTrustedTypesPolicy(trustedTypes, currentScript);\n      } // If creating the internal policy succeeded sign internal variables.\n\n\n      if (trustedTypesPolicy !== null && typeof emptyHTML === 'string') {\n        emptyHTML = trustedTypesPolicy.createHTML('');\n      }\n    } // Prevent further manipulation of configuration.\n    // Not available in IE8, Safari 5, etc.\n\n\n    if (freeze) {\n      freeze(cfg);\n    }\n\n    CONFIG = cfg;\n  };\n\n  const MATHML_TEXT_INTEGRATION_POINTS = addToSet({}, ['mi', 'mo', 'mn', 'ms', 'mtext']);\n  const HTML_INTEGRATION_POINTS = addToSet({}, ['foreignobject', 'desc', 'title', 'annotation-xml']); // Certain elements are allowed in both SVG and HTML\n  // namespace. We need to specify them explicitly\n  // so that they don't get erroneously deleted from\n  // HTML namespace.\n\n  const COMMON_SVG_AND_HTML_ELEMENTS = addToSet({}, ['title', 'style', 'font', 'a', 'script']);\n  /* Keep track of all possible SVG and MathML tags\n   * so that we can perform the namespace checks\n   * correctly. */\n\n  const ALL_SVG_TAGS = addToSet({}, svg$1);\n  addToSet(ALL_SVG_TAGS, svgFilters);\n  addToSet(ALL_SVG_TAGS, svgDisallowed);\n  const ALL_MATHML_TAGS = addToSet({}, mathMl$1);\n  addToSet(ALL_MATHML_TAGS, mathMlDisallowed);\n  /**\n   *\n   *\n   * @param  {Element} element a DOM element whose namespace is being checked\n   * @returns {boolean} Return false if the element has a\n   *  namespace that a spec-compliant parser would never\n   *  return. Return true otherwise.\n   */\n\n  const _checkValidNamespace = function _checkValidNamespace(element) {\n    let parent = getParentNode(element); // In JSDOM, if we're inside shadow DOM, then parentNode\n    // can be null. We just simulate parent in this case.\n\n    if (!parent || !parent.tagName) {\n      parent = {\n        namespaceURI: NAMESPACE,\n        tagName: 'template'\n      };\n    }\n\n    const tagName = stringToLowerCase(element.tagName);\n    const parentTagName = stringToLowerCase(parent.tagName);\n\n    if (!ALLOWED_NAMESPACES[element.namespaceURI]) {\n      return false;\n    }\n\n    if (element.namespaceURI === SVG_NAMESPACE) {\n      // The only way to switch from HTML namespace to SVG\n      // is via <svg>. If it happens via any other tag, then\n      // it should be killed.\n      if (parent.namespaceURI === HTML_NAMESPACE) {\n        return tagName === 'svg';\n      } // The only way to switch from MathML to SVG is via`\n      // svg if parent is either <annotation-xml> or MathML\n      // text integration points.\n\n\n      if (parent.namespaceURI === MATHML_NAMESPACE) {\n        return tagName === 'svg' && (parentTagName === 'annotation-xml' || MATHML_TEXT_INTEGRATION_POINTS[parentTagName]);\n      } // We only allow elements that are defined in SVG\n      // spec. All others are disallowed in SVG namespace.\n\n\n      return Boolean(ALL_SVG_TAGS[tagName]);\n    }\n\n    if (element.namespaceURI === MATHML_NAMESPACE) {\n      // The only way to switch from HTML namespace to MathML\n      // is via <math>. If it happens via any other tag, then\n      // it should be killed.\n      if (parent.namespaceURI === HTML_NAMESPACE) {\n        return tagName === 'math';\n      } // The only way to switch from SVG to MathML is via\n      // <math> and HTML integration points\n\n\n      if (parent.namespaceURI === SVG_NAMESPACE) {\n        return tagName === 'math' && HTML_INTEGRATION_POINTS[parentTagName];\n      } // We only allow elements that are defined in MathML\n      // spec. All others are disallowed in MathML namespace.\n\n\n      return Boolean(ALL_MATHML_TAGS[tagName]);\n    }\n\n    if (element.namespaceURI === HTML_NAMESPACE) {\n      // The only way to switch from SVG to HTML is via\n      // HTML integration points, and from MathML to HTML\n      // is via MathML text integration points\n      if (parent.namespaceURI === SVG_NAMESPACE && !HTML_INTEGRATION_POINTS[parentTagName]) {\n        return false;\n      }\n\n      if (parent.namespaceURI === MATHML_NAMESPACE && !MATHML_TEXT_INTEGRATION_POINTS[parentTagName]) {\n        return false;\n      } // We disallow tags that are specific for MathML\n      // or SVG and should never appear in HTML namespace\n\n\n      return !ALL_MATHML_TAGS[tagName] && (COMMON_SVG_AND_HTML_ELEMENTS[tagName] || !ALL_SVG_TAGS[tagName]);\n    } // For XHTML and XML documents that support custom namespaces\n\n\n    if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && ALLOWED_NAMESPACES[element.namespaceURI]) {\n      return true;\n    } // The code should never reach this place (this means\n    // that the element somehow got namespace that is not\n    // HTML, SVG, MathML or allowed via ALLOWED_NAMESPACES).\n    // Return false just in case.\n\n\n    return false;\n  };\n  /**\n   * _forceRemove\n   *\n   * @param  {Node} node a DOM node\n   */\n\n\n  const _forceRemove = function _forceRemove(node) {\n    arrayPush(DOMPurify.removed, {\n      element: node\n    });\n\n    try {\n      // eslint-disable-next-line unicorn/prefer-dom-node-remove\n      node.parentNode.removeChild(node);\n    } catch (_) {\n      node.remove();\n    }\n  };\n  /**\n   * _removeAttribute\n   *\n   * @param  {String} name an Attribute name\n   * @param  {Node} node a DOM node\n   */\n\n\n  const _removeAttribute = function _removeAttribute(name, node) {\n    try {\n      arrayPush(DOMPurify.removed, {\n        attribute: node.getAttributeNode(name),\n        from: node\n      });\n    } catch (_) {\n      arrayPush(DOMPurify.removed, {\n        attribute: null,\n        from: node\n      });\n    }\n\n    node.removeAttribute(name); // We void attribute values for unremovable \"is\"\" attributes\n\n    if (name === 'is' && !ALLOWED_ATTR[name]) {\n      if (RETURN_DOM || RETURN_DOM_FRAGMENT) {\n        try {\n          _forceRemove(node);\n        } catch (_) {}\n      } else {\n        try {\n          node.setAttribute(name, '');\n        } catch (_) {}\n      }\n    }\n  };\n  /**\n   * _initDocument\n   *\n   * @param  {String} dirty a string of dirty markup\n   * @return {Document} a DOM, filled with the dirty markup\n   */\n\n\n  const _initDocument = function _initDocument(dirty) {\n    /* Create a HTML document */\n    let doc;\n    let leadingWhitespace;\n\n    if (FORCE_BODY) {\n      dirty = '<remove></remove>' + dirty;\n    } else {\n      /* If FORCE_BODY isn't used, leading whitespace needs to be preserved manually */\n      const matches = stringMatch(dirty, /^[\\r\\n\\t ]+/);\n      leadingWhitespace = matches && matches[0];\n    }\n\n    if (PARSER_MEDIA_TYPE === 'application/xhtml+xml' && NAMESPACE === HTML_NAMESPACE) {\n      // Root of XHTML doc must contain xmlns declaration (see https://www.w3.org/TR/xhtml1/normative.html#strict)\n      dirty = '<html xmlns=\"http://www.w3.org/1999/xhtml\"><head></head><body>' + dirty + '</body></html>';\n    }\n\n    const dirtyPayload = trustedTypesPolicy ? trustedTypesPolicy.createHTML(dirty) : dirty;\n    /*\n     * Use the DOMParser API by default, fallback later if needs be\n     * DOMParser not work for svg when has multiple root element.\n     */\n\n    if (NAMESPACE === HTML_NAMESPACE) {\n      try {\n        doc = new DOMParser().parseFromString(dirtyPayload, PARSER_MEDIA_TYPE);\n      } catch (_) {}\n    }\n    /* Use createHTMLDocument in case DOMParser is not available */\n\n\n    if (!doc || !doc.documentElement) {\n      doc = implementation.createDocument(NAMESPACE, 'template', null);\n\n      try {\n        doc.documentElement.innerHTML = IS_EMPTY_INPUT ? emptyHTML : dirtyPayload;\n      } catch (_) {// Syntax error if dirtyPayload is invalid xml\n      }\n    }\n\n    const body = doc.body || doc.documentElement;\n\n    if (dirty && leadingWhitespace) {\n      body.insertBefore(document.createTextNode(leadingWhitespace), body.childNodes[0] || null);\n    }\n    /* Work on whole document or just its body */\n\n\n    if (NAMESPACE === HTML_NAMESPACE) {\n      return getElementsByTagName.call(doc, WHOLE_DOCUMENT ? 'html' : 'body')[0];\n    }\n\n    return WHOLE_DOCUMENT ? doc.documentElement : body;\n  };\n  /**\n   * _createIterator\n   *\n   * @param  {Document} root document/fragment to create iterator for\n   * @return {Iterator} iterator instance\n   */\n\n\n  const _createIterator = function _createIterator(root) {\n    return createNodeIterator.call(root.ownerDocument || root, root, // eslint-disable-next-line no-bitwise\n    NodeFilter.SHOW_ELEMENT | NodeFilter.SHOW_COMMENT | NodeFilter.SHOW_TEXT, null, false);\n  };\n  /**\n   * _isClobbered\n   *\n   * @param  {Node} elm element to check for clobbering attacks\n   * @return {Boolean} true if clobbered, false if safe\n   */\n\n\n  const _isClobbered = function _isClobbered(elm) {\n    return elm instanceof HTMLFormElement && (typeof elm.nodeName !== 'string' || typeof elm.textContent !== 'string' || typeof elm.removeChild !== 'function' || !(elm.attributes instanceof NamedNodeMap) || typeof elm.removeAttribute !== 'function' || typeof elm.setAttribute !== 'function' || typeof elm.namespaceURI !== 'string' || typeof elm.insertBefore !== 'function' || typeof elm.hasChildNodes !== 'function');\n  };\n  /**\n   * _isNode\n   *\n   * @param  {Node} obj object to check whether it's a DOM node\n   * @return {Boolean} true is object is a DOM node\n   */\n\n\n  const _isNode = function _isNode(object) {\n    return typeof Node === 'object' ? object instanceof Node : object && typeof object === 'object' && typeof object.nodeType === 'number' && typeof object.nodeName === 'string';\n  };\n  /**\n   * _executeHook\n   * Execute user configurable hooks\n   *\n   * @param  {String} entryPoint  Name of the hook's entry point\n   * @param  {Node} currentNode node to work on with the hook\n   * @param  {Object} data additional hook parameters\n   */\n\n\n  const _executeHook = function _executeHook(entryPoint, currentNode, data) {\n    if (!hooks[entryPoint]) {\n      return;\n    }\n\n    arrayForEach(hooks[entryPoint], hook => {\n      hook.call(DOMPurify, currentNode, data, CONFIG);\n    });\n  };\n  /**\n   * _sanitizeElements\n   *\n   * @protect nodeName\n   * @protect textContent\n   * @protect removeChild\n   *\n   * @param   {Node} currentNode to check for permission to exist\n   * @return  {Boolean} true if node was killed, false if left alive\n   */\n\n\n  const _sanitizeElements = function _sanitizeElements(currentNode) {\n    let content;\n    /* Execute a hook if present */\n\n    _executeHook('beforeSanitizeElements', currentNode, null);\n    /* Check if element is clobbered or can clobber */\n\n\n    if (_isClobbered(currentNode)) {\n      _forceRemove(currentNode);\n\n      return true;\n    }\n    /* Now let's check the element's type and name */\n\n\n    const tagName = transformCaseFunc(currentNode.nodeName);\n    /* Execute a hook if present */\n\n    _executeHook('uponSanitizeElement', currentNode, {\n      tagName,\n      allowedTags: ALLOWED_TAGS\n    });\n    /* Detect mXSS attempts abusing namespace confusion */\n\n\n    if (currentNode.hasChildNodes() && !_isNode(currentNode.firstElementChild) && (!_isNode(currentNode.content) || !_isNode(currentNode.content.firstElementChild)) && regExpTest(/<[/\\w]/g, currentNode.innerHTML) && regExpTest(/<[/\\w]/g, currentNode.textContent)) {\n      _forceRemove(currentNode);\n\n      return true;\n    }\n    /* Remove element if anything forbids its presence */\n\n\n    if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n      /* Check if we have a custom element to handle */\n      if (!FORBID_TAGS[tagName] && _basicCustomElementTest(tagName)) {\n        if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, tagName)) return false;\n        if (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(tagName)) return false;\n      }\n      /* Keep content except for bad-listed elements */\n\n\n      if (KEEP_CONTENT && !FORBID_CONTENTS[tagName]) {\n        const parentNode = getParentNode(currentNode) || currentNode.parentNode;\n        const childNodes = getChildNodes(currentNode) || currentNode.childNodes;\n\n        if (childNodes && parentNode) {\n          const childCount = childNodes.length;\n\n          for (let i = childCount - 1; i >= 0; --i) {\n            parentNode.insertBefore(cloneNode(childNodes[i], true), getNextSibling(currentNode));\n          }\n        }\n      }\n\n      _forceRemove(currentNode);\n\n      return true;\n    }\n    /* Check whether element has a valid namespace */\n\n\n    if (currentNode instanceof Element && !_checkValidNamespace(currentNode)) {\n      _forceRemove(currentNode);\n\n      return true;\n    }\n    /* Make sure that older browsers don't get fallback-tag mXSS */\n\n\n    if ((tagName === 'noscript' || tagName === 'noembed' || tagName === 'noframes') && regExpTest(/<\\/no(script|embed|frames)/i, currentNode.innerHTML)) {\n      _forceRemove(currentNode);\n\n      return true;\n    }\n    /* Sanitize element content to be template-safe */\n\n\n    if (SAFE_FOR_TEMPLATES && currentNode.nodeType === 3) {\n      /* Get the element's text content */\n      content = currentNode.textContent;\n      content = stringReplace(content, MUSTACHE_EXPR, ' ');\n      content = stringReplace(content, ERB_EXPR, ' ');\n      content = stringReplace(content, TMPLIT_EXPR, ' ');\n\n      if (currentNode.textContent !== content) {\n        arrayPush(DOMPurify.removed, {\n          element: currentNode.cloneNode()\n        });\n        currentNode.textContent = content;\n      }\n    }\n    /* Execute a hook if present */\n\n\n    _executeHook('afterSanitizeElements', currentNode, null);\n\n    return false;\n  };\n  /**\n   * _isValidAttribute\n   *\n   * @param  {string} lcTag Lowercase tag name of containing element.\n   * @param  {string} lcName Lowercase attribute name.\n   * @param  {string} value Attribute value.\n   * @return {Boolean} Returns true if `value` is valid, otherwise false.\n   */\n  // eslint-disable-next-line complexity\n\n\n  const _isValidAttribute = function _isValidAttribute(lcTag, lcName, value) {\n    /* Make sure attribute cannot clobber */\n    if (SANITIZE_DOM && (lcName === 'id' || lcName === 'name') && (value in document || value in formElement)) {\n      return false;\n    }\n    /* Allow valid data-* attributes: At least one character after \"-\"\n        (https://html.spec.whatwg.org/multipage/dom.html#embedding-custom-non-visible-data-with-the-data-*-attributes)\n        XML-compatible (https://html.spec.whatwg.org/multipage/infrastructure.html#xml-compatible and http://www.w3.org/TR/xml/#d0e804)\n        We don't need to check the value; it's always URI safe. */\n\n\n    if (ALLOW_DATA_ATTR && !FORBID_ATTR[lcName] && regExpTest(DATA_ATTR, lcName)) ; else if (ALLOW_ARIA_ATTR && regExpTest(ARIA_ATTR, lcName)) ; else if (!ALLOWED_ATTR[lcName] || FORBID_ATTR[lcName]) {\n      if ( // First condition does a very basic check if a) it's basically a valid custom element tagname AND\n      // b) if the tagName passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n      // and c) if the attribute name passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.attributeNameCheck\n      _basicCustomElementTest(lcTag) && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, lcTag) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(lcTag)) && (CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.attributeNameCheck, lcName) || CUSTOM_ELEMENT_HANDLING.attributeNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.attributeNameCheck(lcName)) || // Alternative, second condition checks if it's an `is`-attribute, AND\n      // the value passes whatever the user has configured for CUSTOM_ELEMENT_HANDLING.tagNameCheck\n      lcName === 'is' && CUSTOM_ELEMENT_HANDLING.allowCustomizedBuiltInElements && (CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof RegExp && regExpTest(CUSTOM_ELEMENT_HANDLING.tagNameCheck, value) || CUSTOM_ELEMENT_HANDLING.tagNameCheck instanceof Function && CUSTOM_ELEMENT_HANDLING.tagNameCheck(value))) ; else {\n        return false;\n      }\n      /* Check value is safe. First, is attr inert? If so, is safe */\n\n    } else if (URI_SAFE_ATTRIBUTES[lcName]) ; else if (regExpTest(IS_ALLOWED_URI$1, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if ((lcName === 'src' || lcName === 'xlink:href' || lcName === 'href') && lcTag !== 'script' && stringIndexOf(value, 'data:') === 0 && DATA_URI_TAGS[lcTag]) ; else if (ALLOW_UNKNOWN_PROTOCOLS && !regExpTest(IS_SCRIPT_OR_DATA, stringReplace(value, ATTR_WHITESPACE, ''))) ; else if (value) {\n      return false;\n    } else ;\n\n    return true;\n  };\n  /**\n   * _basicCustomElementCheck\n   * checks if at least one dash is included in tagName, and it's not the first char\n   * for more sophisticated checking see https://github.com/sindresorhus/validate-element-name\n   * @param {string} tagName name of the tag of the node to sanitize\n   */\n\n\n  const _basicCustomElementTest = function _basicCustomElementTest(tagName) {\n    return tagName.indexOf('-') > 0;\n  };\n  /**\n   * _sanitizeAttributes\n   *\n   * @protect attributes\n   * @protect nodeName\n   * @protect removeAttribute\n   * @protect setAttribute\n   *\n   * @param  {Node} currentNode to sanitize\n   */\n\n\n  const _sanitizeAttributes = function _sanitizeAttributes(currentNode) {\n    let attr;\n    let value;\n    let lcName;\n    let l;\n    /* Execute a hook if present */\n\n    _executeHook('beforeSanitizeAttributes', currentNode, null);\n\n    const {\n      attributes\n    } = currentNode;\n    /* Check if we have attributes; if not we might have a text node */\n\n    if (!attributes) {\n      return;\n    }\n\n    const hookEvent = {\n      attrName: '',\n      attrValue: '',\n      keepAttr: true,\n      allowedAttributes: ALLOWED_ATTR\n    };\n    l = attributes.length;\n    /* Go backwards over all attributes; safely remove bad ones */\n\n    while (l--) {\n      attr = attributes[l];\n      const {\n        name,\n        namespaceURI\n      } = attr;\n      value = name === 'value' ? attr.value : stringTrim(attr.value);\n      lcName = transformCaseFunc(name);\n      /* Execute a hook if present */\n\n      hookEvent.attrName = lcName;\n      hookEvent.attrValue = value;\n      hookEvent.keepAttr = true;\n      hookEvent.forceKeepAttr = undefined; // Allows developers to see this is a property they can set\n\n      _executeHook('uponSanitizeAttribute', currentNode, hookEvent);\n\n      value = hookEvent.attrValue;\n      /* Did the hooks approve of the attribute? */\n\n      if (hookEvent.forceKeepAttr) {\n        continue;\n      }\n      /* Remove attribute */\n\n\n      _removeAttribute(name, currentNode);\n      /* Did the hooks approve of the attribute? */\n\n\n      if (!hookEvent.keepAttr) {\n        continue;\n      }\n      /* Work around a security issue in jQuery 3.0 */\n\n\n      if (!ALLOW_SELF_CLOSE_IN_ATTR && regExpTest(/\\/>/i, value)) {\n        _removeAttribute(name, currentNode);\n\n        continue;\n      }\n      /* Sanitize attribute content to be template-safe */\n\n\n      if (SAFE_FOR_TEMPLATES) {\n        value = stringReplace(value, MUSTACHE_EXPR, ' ');\n        value = stringReplace(value, ERB_EXPR, ' ');\n        value = stringReplace(value, TMPLIT_EXPR, ' ');\n      }\n      /* Is `value` valid for this attribute? */\n\n\n      const lcTag = transformCaseFunc(currentNode.nodeName);\n\n      if (!_isValidAttribute(lcTag, lcName, value)) {\n        continue;\n      }\n      /* Full DOM Clobbering protection via namespace isolation,\n       * Prefix id and name attributes with `user-content-`\n       */\n\n\n      if (SANITIZE_NAMED_PROPS && (lcName === 'id' || lcName === 'name')) {\n        // Remove the attribute with this value\n        _removeAttribute(name, currentNode); // Prefix the value and later re-create the attribute with the sanitized value\n\n\n        value = SANITIZE_NAMED_PROPS_PREFIX + value;\n      }\n      /* Handle attributes that require Trusted Types */\n\n\n      if (trustedTypesPolicy && typeof trustedTypes === 'object' && typeof trustedTypes.getAttributeType === 'function') {\n        if (namespaceURI) ; else {\n          switch (trustedTypes.getAttributeType(lcTag, lcName)) {\n            case 'TrustedHTML':\n              {\n                value = trustedTypesPolicy.createHTML(value);\n                break;\n              }\n\n            case 'TrustedScriptURL':\n              {\n                value = trustedTypesPolicy.createScriptURL(value);\n                break;\n              }\n          }\n        }\n      }\n      /* Handle invalid data-* attribute set by try-catching it */\n\n\n      try {\n        if (namespaceURI) {\n          currentNode.setAttributeNS(namespaceURI, name, value);\n        } else {\n          /* Fallback to setAttribute() for browser-unrecognized namespaces e.g. \"x-schema\". */\n          currentNode.setAttribute(name, value);\n        }\n\n        arrayPop(DOMPurify.removed);\n      } catch (_) {}\n    }\n    /* Execute a hook if present */\n\n\n    _executeHook('afterSanitizeAttributes', currentNode, null);\n  };\n  /**\n   * _sanitizeShadowDOM\n   *\n   * @param  {DocumentFragment} fragment to iterate over recursively\n   */\n\n\n  const _sanitizeShadowDOM = function _sanitizeShadowDOM(fragment) {\n    let shadowNode;\n\n    const shadowIterator = _createIterator(fragment);\n    /* Execute a hook if present */\n\n\n    _executeHook('beforeSanitizeShadowDOM', fragment, null);\n\n    while (shadowNode = shadowIterator.nextNode()) {\n      /* Execute a hook if present */\n      _executeHook('uponSanitizeShadowNode', shadowNode, null);\n      /* Sanitize tags and elements */\n\n\n      if (_sanitizeElements(shadowNode)) {\n        continue;\n      }\n      /* Deep shadow DOM detected */\n\n\n      if (shadowNode.content instanceof DocumentFragment) {\n        _sanitizeShadowDOM(shadowNode.content);\n      }\n      /* Check attributes, sanitize if necessary */\n\n\n      _sanitizeAttributes(shadowNode);\n    }\n    /* Execute a hook if present */\n\n\n    _executeHook('afterSanitizeShadowDOM', fragment, null);\n  };\n  /**\n   * Sanitize\n   * Public method providing core sanitation functionality\n   *\n   * @param {String|Node} dirty string or DOM node\n   * @param {Object} configuration object\n   */\n  // eslint-disable-next-line complexity\n\n\n  DOMPurify.sanitize = function (dirty) {\n    let cfg = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {};\n    let body;\n    let importedNode;\n    let currentNode;\n    let returnNode;\n    /* Make sure we have a string to sanitize.\n      DO NOT return early, as this will return the wrong type if\n      the user has requested a DOM object rather than a string */\n\n    IS_EMPTY_INPUT = !dirty;\n\n    if (IS_EMPTY_INPUT) {\n      dirty = '<!-->';\n    }\n    /* Stringify, in case dirty is an object */\n\n\n    if (typeof dirty !== 'string' && !_isNode(dirty)) {\n      if (typeof dirty.toString === 'function') {\n        dirty = dirty.toString();\n\n        if (typeof dirty !== 'string') {\n          throw typeErrorCreate('dirty is not a string, aborting');\n        }\n      } else {\n        throw typeErrorCreate('toString is not a function');\n      }\n    }\n    /* Return dirty HTML if DOMPurify cannot run */\n\n\n    if (!DOMPurify.isSupported) {\n      return dirty;\n    }\n    /* Assign config vars */\n\n\n    if (!SET_CONFIG) {\n      _parseConfig(cfg);\n    }\n    /* Clean up removed elements */\n\n\n    DOMPurify.removed = [];\n    /* Check if dirty is correctly typed for IN_PLACE */\n\n    if (typeof dirty === 'string') {\n      IN_PLACE = false;\n    }\n\n    if (IN_PLACE) {\n      /* Do some early pre-sanitization to avoid unsafe root nodes */\n      if (dirty.nodeName) {\n        const tagName = transformCaseFunc(dirty.nodeName);\n\n        if (!ALLOWED_TAGS[tagName] || FORBID_TAGS[tagName]) {\n          throw typeErrorCreate('root node is forbidden and cannot be sanitized in-place');\n        }\n      }\n    } else if (dirty instanceof Node) {\n      /* If dirty is a DOM element, append to an empty document to avoid\n         elements being stripped by the parser */\n      body = _initDocument('<!---->');\n      importedNode = body.ownerDocument.importNode(dirty, true);\n\n      if (importedNode.nodeType === 1 && importedNode.nodeName === 'BODY') {\n        /* Node is already a body, use as is */\n        body = importedNode;\n      } else if (importedNode.nodeName === 'HTML') {\n        body = importedNode;\n      } else {\n        // eslint-disable-next-line unicorn/prefer-dom-node-append\n        body.appendChild(importedNode);\n      }\n    } else {\n      /* Exit directly if we have nothing to do */\n      if (!RETURN_DOM && !SAFE_FOR_TEMPLATES && !WHOLE_DOCUMENT && // eslint-disable-next-line unicorn/prefer-includes\n      dirty.indexOf('<') === -1) {\n        return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(dirty) : dirty;\n      }\n      /* Initialize the document to work on */\n\n\n      body = _initDocument(dirty);\n      /* Check we have a DOM node from the data */\n\n      if (!body) {\n        return RETURN_DOM ? null : RETURN_TRUSTED_TYPE ? emptyHTML : '';\n      }\n    }\n    /* Remove first element node (ours) if FORCE_BODY is set */\n\n\n    if (body && FORCE_BODY) {\n      _forceRemove(body.firstChild);\n    }\n    /* Get node iterator */\n\n\n    const nodeIterator = _createIterator(IN_PLACE ? dirty : body);\n    /* Now start iterating over the created document */\n\n\n    while (currentNode = nodeIterator.nextNode()) {\n      /* Sanitize tags and elements */\n      if (_sanitizeElements(currentNode)) {\n        continue;\n      }\n      /* Shadow DOM detected, sanitize it */\n\n\n      if (currentNode.content instanceof DocumentFragment) {\n        _sanitizeShadowDOM(currentNode.content);\n      }\n      /* Check attributes, sanitize if necessary */\n\n\n      _sanitizeAttributes(currentNode);\n    }\n    /* If we sanitized `dirty` in-place, return it. */\n\n\n    if (IN_PLACE) {\n      return dirty;\n    }\n    /* Return sanitized string or DOM */\n\n\n    if (RETURN_DOM) {\n      if (RETURN_DOM_FRAGMENT) {\n        returnNode = createDocumentFragment.call(body.ownerDocument);\n\n        while (body.firstChild) {\n          // eslint-disable-next-line unicorn/prefer-dom-node-append\n          returnNode.appendChild(body.firstChild);\n        }\n      } else {\n        returnNode = body;\n      }\n\n      if (ALLOWED_ATTR.shadowroot || ALLOWED_ATTR.shadowrootmode) {\n        /*\n          AdoptNode() is not used because internal state is not reset\n          (e.g. the past names map of a HTMLFormElement), this is safe\n          in theory but we would rather not risk another attack vector.\n          The state that is cloned by importNode() is explicitly defined\n          by the specs.\n        */\n        returnNode = importNode.call(originalDocument, returnNode, true);\n      }\n\n      return returnNode;\n    }\n\n    let serializedHTML = WHOLE_DOCUMENT ? body.outerHTML : body.innerHTML;\n    /* Serialize doctype if allowed */\n\n    if (WHOLE_DOCUMENT && ALLOWED_TAGS['!doctype'] && body.ownerDocument && body.ownerDocument.doctype && body.ownerDocument.doctype.name && regExpTest(DOCTYPE_NAME, body.ownerDocument.doctype.name)) {\n      serializedHTML = '<!DOCTYPE ' + body.ownerDocument.doctype.name + '>\\n' + serializedHTML;\n    }\n    /* Sanitize final string template-safe */\n\n\n    if (SAFE_FOR_TEMPLATES) {\n      serializedHTML = stringReplace(serializedHTML, MUSTACHE_EXPR, ' ');\n      serializedHTML = stringReplace(serializedHTML, ERB_EXPR, ' ');\n      serializedHTML = stringReplace(serializedHTML, TMPLIT_EXPR, ' ');\n    }\n\n    return trustedTypesPolicy && RETURN_TRUSTED_TYPE ? trustedTypesPolicy.createHTML(serializedHTML) : serializedHTML;\n  };\n  /**\n   * Public method to set the configuration once\n   * setConfig\n   *\n   * @param {Object} cfg configuration object\n   */\n\n\n  DOMPurify.setConfig = function (cfg) {\n    _parseConfig(cfg);\n\n    SET_CONFIG = true;\n  };\n  /**\n   * Public method to remove the configuration\n   * clearConfig\n   *\n   */\n\n\n  DOMPurify.clearConfig = function () {\n    CONFIG = null;\n    SET_CONFIG = false;\n  };\n  /**\n   * Public method to check if an attribute value is valid.\n   * Uses last set config, if any. Otherwise, uses config defaults.\n   * isValidAttribute\n   *\n   * @param  {string} tag Tag name of containing element.\n   * @param  {string} attr Attribute name.\n   * @param  {string} value Attribute value.\n   * @return {Boolean} Returns true if `value` is valid. Otherwise, returns false.\n   */\n\n\n  DOMPurify.isValidAttribute = function (tag, attr, value) {\n    /* Initialize shared config vars if necessary. */\n    if (!CONFIG) {\n      _parseConfig({});\n    }\n\n    const lcTag = transformCaseFunc(tag);\n    const lcName = transformCaseFunc(attr);\n    return _isValidAttribute(lcTag, lcName, value);\n  };\n  /**\n   * AddHook\n   * Public method to add DOMPurify hooks\n   *\n   * @param {String} entryPoint entry point for the hook to add\n   * @param {Function} hookFunction function to execute\n   */\n\n\n  DOMPurify.addHook = function (entryPoint, hookFunction) {\n    if (typeof hookFunction !== 'function') {\n      return;\n    }\n\n    hooks[entryPoint] = hooks[entryPoint] || [];\n    arrayPush(hooks[entryPoint], hookFunction);\n  };\n  /**\n   * RemoveHook\n   * Public method to remove a DOMPurify hook at a given entryPoint\n   * (pops it from the stack of hooks if more are present)\n   *\n   * @param {String} entryPoint entry point for the hook to remove\n   * @return {Function} removed(popped) hook\n   */\n\n\n  DOMPurify.removeHook = function (entryPoint) {\n    if (hooks[entryPoint]) {\n      return arrayPop(hooks[entryPoint]);\n    }\n  };\n  /**\n   * RemoveHooks\n   * Public method to remove all DOMPurify hooks at a given entryPoint\n   *\n   * @param  {String} entryPoint entry point for the hooks to remove\n   */\n\n\n  DOMPurify.removeHooks = function (entryPoint) {\n    if (hooks[entryPoint]) {\n      hooks[entryPoint] = [];\n    }\n  };\n  /**\n   * RemoveAllHooks\n   * Public method to remove all DOMPurify hooks\n   *\n   */\n\n\n  DOMPurify.removeAllHooks = function () {\n    hooks = {};\n  };\n\n  return DOMPurify;\n}\n\nvar purify = createDOMPurify();\n\nclass Textbox {\n\n    constructor({value, label, onchange}) {\n\n        this.elem = div({class: 'igv-ui-generic-dialog-label-input'});\n\n        if(label) {\n            const div$1 = div();\n            div$1.innerHTML = label;\n            this.elem.appendChild(div$1);\n        }\n\n        this.textBox = create$1('input');\n        if(value) {\n            this.textBox.value = purify.sanitize(value);\n        }\n        this.elem.appendChild(this.textBox);\n\n        if(onchange) {\n            this.textBox.addEventListener('change', (e) => onchange(this.textBox.value));\n        }\n    }\n\n    get value() {\n        return this.textBox.value;\n    }\n\n    set value(v) {\n        this.textBox.value = v;\n    }\n}\n\n/**\n * Generic container for UI components\n */\nclass Panel {\n\n    constructor() {\n\n        this.elem = create$1('div', {\n            class: 'igv-ui-panel-column'\n        });\n    }\n\n    add(component) {\n\n        if(component instanceof Node) {\n            this.elem.append(component);\n        }\n        else if(typeof component === 'object') {\n            this.elem.append(component.elem);\n        }\n        else {\n            // Assuming a string, possibly html\n            const wrapper = div();\n            wrapper.innerHTML = component;\n            this.elem.append(wrapper);\n        }\n    }\n\n\n}\n\nfunction createCheckbox(name, initialState) {\n    const container = div({class: 'igv-ui-trackgear-popover-check-container'});\n    const svg = iconMarkup('check', (true === initialState ? '#444' : 'transparent'));\n    svg.style.borderColor = 'gray';\n    svg.style.borderWidth = '1px';\n    svg.style.borderStyle = 'solid';\n\n    container.appendChild(svg);\n    let label = div(); //{ class: 'igv-some-label-class' });\n    label.textContent = name;\n    container.appendChild(label);\n\n    return container;\n}\n\nfunction createIcon(name, color) {\n    return iconMarkup(name, color);\n}\n\nfunction iconMarkup(name, color) {\n    color = color || \"currentColor\";\n    let icon = icons[name];\n    if (!icon) {\n        console.error(`No icon named: ${name}`);\n        icon = icons[\"question\"];\n    }\n\n    const svg = document.createElementNS(\"http://www.w3.org/2000/svg\", \"svg\");\n    svg.setAttributeNS(null,'viewBox', '0 0 ' + icon[0] + ' ' + icon[1]);\n    const path = document.createElementNS(\"http://www.w3.org/2000/svg\", \"path\");\n    path.setAttributeNS(null,'fill',  color );\n    path.setAttributeNS(null,'d', icon[4]);\n    svg.appendChild(path);\n    return svg;\n}\n\nconst icons = {\n    \"check\": [512, 512, [], \"f00c\", \"M173.898 439.404l-166.4-166.4c-9.997-9.997-9.997-26.206 0-36.204l36.203-36.204c9.997-9.998 26.207-9.998 36.204 0L192 312.69 432.095 72.596c9.997-9.997 26.207-9.997 36.204 0l36.203 36.204c9.997 9.997 9.997 26.206 0 36.204l-294.4 294.401c-9.998 9.997-26.207 9.997-36.204-.001z\"],\n    \"cog\": [512, 512, [], \"f013\", \"M444.788 291.1l42.616 24.599c4.867 2.809 7.126 8.618 5.459 13.985-11.07 35.642-29.97 67.842-54.689 94.586a12.016 12.016 0 0 1-14.832 2.254l-42.584-24.595a191.577 191.577 0 0 1-60.759 35.13v49.182a12.01 12.01 0 0 1-9.377 11.718c-34.956 7.85-72.499 8.256-109.219.007-5.49-1.233-9.403-6.096-9.403-11.723v-49.184a191.555 191.555 0 0 1-60.759-35.13l-42.584 24.595a12.016 12.016 0 0 1-14.832-2.254c-24.718-26.744-43.619-58.944-54.689-94.586-1.667-5.366.592-11.175 5.459-13.985L67.212 291.1a193.48 193.48 0 0 1 0-70.199l-42.616-24.599c-4.867-2.809-7.126-8.618-5.459-13.985 11.07-35.642 29.97-67.842 54.689-94.586a12.016 12.016 0 0 1 14.832-2.254l42.584 24.595a191.577 191.577 0 0 1 60.759-35.13V25.759a12.01 12.01 0 0 1 9.377-11.718c34.956-7.85 72.499-8.256 109.219-.007 5.49 1.233 9.403 6.096 9.403 11.723v49.184a191.555 191.555 0 0 1 60.759 35.13l42.584-24.595a12.016 12.016 0 0 1 14.832 2.254c24.718 26.744 43.619 58.944 54.689 94.586 1.667 5.366-.592 11.175-5.459 13.985L444.788 220.9a193.485 193.485 0 0 1 0 70.2zM336 256c0-44.112-35.888-80-80-80s-80 35.888-80 80 35.888 80 80 80 80-35.888 80-80z\"],\n    \"exclamation\": [192, 512, [], \"f12a\", \"M176 432c0 44.112-35.888 80-80 80s-80-35.888-80-80 35.888-80 80-80 80 35.888 80 80zM25.26 25.199l13.6 272C39.499 309.972 50.041 320 62.83 320h66.34c12.789 0 23.331-10.028 23.97-22.801l13.6-272C167.425 11.49 156.496 0 142.77 0H49.23C35.504 0 24.575 11.49 25.26 25.199z\"],\n    \"exclamation-circle\": [512, 512, [], \"f06a\", \"M504 256c0 136.997-111.043 248-248 248S8 392.997 8 256C8 119.083 119.043 8 256 8s248 111.083 248 248zm-248 50c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"],\n    \"exclamation-triangle\": [576, 512, [], \"f071\", \"M569.517 440.013C587.975 472.007 564.806 512 527.94 512H48.054c-36.937 0-59.999-40.055-41.577-71.987L246.423 23.985c18.467-32.009 64.72-31.951 83.154 0l239.94 416.028zM288 354c-25.405 0-46 20.595-46 46s20.595 46 46 46 46-20.595 46-46-20.595-46-46-46zm-43.673-165.346l7.418 136c.347 6.364 5.609 11.346 11.982 11.346h48.546c6.373 0 11.635-4.982 11.982-11.346l7.418-136c.375-6.874-5.098-12.654-11.982-12.654h-63.383c-6.884 0-12.356 5.78-11.981 12.654z\"],\n    \"minus\": [448, 512, [], \"f068\", \"M424 318.2c13.3 0 24-10.7 24-24v-76.4c0-13.3-10.7-24-24-24H24c-13.3 0-24 10.7-24 24v76.4c0 13.3 10.7 24 24 24h400z\"],\n    \"minus-circle\": [512, 512, [], \"f056\", \"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zM124 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H124z\"],\n    \"minus-square\": [448, 512, [], \"f146\", \"M400 32H48C21.5 32 0 53.5 0 80v352c0 26.5 21.5 48 48 48h352c26.5 0 48-21.5 48-48V80c0-26.5-21.5-48-48-48zM92 296c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h264c6.6 0 12 5.4 12 12v56c0 6.6-5.4 12-12 12H92z\"],\n    \"plus\": [448, 512, [], \"f067\", \"M448 294.2v-76.4c0-13.3-10.7-24-24-24H286.2V56c0-13.3-10.7-24-24-24h-76.4c-13.3 0-24 10.7-24 24v137.8H24c-13.3 0-24 10.7-24 24v76.4c0 13.3 10.7 24 24 24h137.8V456c0 13.3 10.7 24 24 24h76.4c13.3 0 24-10.7 24-24V318.2H424c13.3 0 24-10.7 24-24z\"],\n    \"plus-circle\": [512, 512, [], \"f055\", \"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm144 276c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92h-92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z\"],\n    \"plus-square\": [448, 512, [], \"f0fe\", \"M400 32H48C21.5 32 0 53.5 0 80v352c0 26.5 21.5 48 48 48h352c26.5 0 48-21.5 48-48V80c0-26.5-21.5-48-48-48zm-32 252c0 6.6-5.4 12-12 12h-92v92c0 6.6-5.4 12-12 12h-56c-6.6 0-12-5.4-12-12v-92H92c-6.6 0-12-5.4-12-12v-56c0-6.6 5.4-12 12-12h92v-92c0-6.6 5.4-12 12-12h56c6.6 0 12 5.4 12 12v92h92c6.6 0 12 5.4 12 12v56z\"],\n    \"question\": [384, 512, [], \"f128\", \"M202.021 0C122.202 0 70.503 32.703 29.914 91.026c-7.363 10.58-5.093 25.086 5.178 32.874l43.138 32.709c10.373 7.865 25.132 6.026 33.253-4.148 25.049-31.381 43.63-49.449 82.757-49.449 30.764 0 68.816 19.799 68.816 49.631 0 22.552-18.617 34.134-48.993 51.164-35.423 19.86-82.299 44.576-82.299 106.405V320c0 13.255 10.745 24 24 24h72.471c13.255 0 24-10.745 24-24v-5.773c0-42.86 125.268-44.645 125.268-160.627C377.504 66.256 286.902 0 202.021 0zM192 373.459c-38.196 0-69.271 31.075-69.271 69.271 0 38.195 31.075 69.27 69.271 69.27s69.271-31.075 69.271-69.271-31.075-69.27-69.271-69.27z\"],\n    \"save\": [448, 512, [], \"f0c7\", \"M433.941 129.941l-83.882-83.882A48 48 0 0 0 316.118 32H48C21.49 32 0 53.49 0 80v352c0 26.51 21.49 48 48 48h352c26.51 0 48-21.49 48-48V163.882a48 48 0 0 0-14.059-33.941zM224 416c-35.346 0-64-28.654-64-64 0-35.346 28.654-64 64-64s64 28.654 64 64c0 35.346-28.654 64-64 64zm96-304.52V212c0 6.627-5.373 12-12 12H76c-6.627 0-12-5.373-12-12V108c0-6.627 5.373-12 12-12h228.52c3.183 0 6.235 1.264 8.485 3.515l3.48 3.48A11.996 11.996 0 0 1 320 111.48z\"],\n    \"search\": [512, 512, [], \"f002\", \"M505 442.7L405.3 343c-4.5-4.5-10.6-7-17-7H372c27.6-35.3 44-79.7 44-128C416 93.1 322.9 0 208 0S0 93.1 0 208s93.1 208 208 208c48.3 0 92.7-16.4 128-44v16.3c0 6.4 2.5 12.5 7 17l99.7 99.7c9.4 9.4 24.6 9.4 33.9 0l28.3-28.3c9.4-9.4 9.4-24.6.1-34zM208 336c-70.7 0-128-57.2-128-128 0-70.7 57.2-128 128-128 70.7 0 128 57.2 128 128 0 70.7-57.2 128-128 128z\"],\n    \"share\": [512, 512, [], \"f064\", \"M503.691 189.836L327.687 37.851C312.281 24.546 288 35.347 288 56.015v80.053C127.371 137.907 0 170.1 0 322.326c0 61.441 39.581 122.309 83.333 154.132 13.653 9.931 33.111-2.533 28.077-18.631C66.066 312.814 132.917 274.316 288 272.085V360c0 20.7 24.3 31.453 39.687 18.164l176.004-152c11.071-9.562 11.086-26.753 0-36.328z\"],\n    \"spinner\": [512, 512, [], \"f110\", \"M304 48c0 26.51-21.49 48-48 48s-48-21.49-48-48 21.49-48 48-48 48 21.49 48 48zm-48 368c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48-21.49-48-48-48zm208-208c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48-21.49-48-48-48zM96 256c0-26.51-21.49-48-48-48S0 229.49 0 256s21.49 48 48 48 48-21.49 48-48zm12.922 99.078c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48c0-26.509-21.491-48-48-48zm294.156 0c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48c0-26.509-21.49-48-48-48zM108.922 60.922c-26.51 0-48 21.49-48 48s21.49 48 48 48 48-21.49 48-48-21.491-48-48-48z\"],\n    \"square\": [448, 512, [], \"f0c8\", \"M400 32H48C21.5 32 0 53.5 0 80v352c0 26.5 21.5 48 48 48h352c26.5 0 48-21.5 48-48V80c0-26.5-21.5-48-48-48z\"],\n    \"square-full\": [512, 512, [], \"f45c\", \"M512 512H0V0h512v512z\"],\n    \"times\": [384, 512, [], \"f00d\", \"M323.1 441l53.9-53.9c9.4-9.4 9.4-24.5 0-33.9L279.8 256l97.2-97.2c9.4-9.4 9.4-24.5 0-33.9L323.1 71c-9.4-9.4-24.5-9.4-33.9 0L192 168.2 94.8 71c-9.4-9.4-24.5-9.4-33.9 0L7 124.9c-9.4 9.4-9.4 24.5 0 33.9l97.2 97.2L7 353.2c-9.4 9.4-9.4 24.5 0 33.9L60.9 441c9.4 9.4 24.5 9.4 33.9 0l97.2-97.2 97.2 97.2c9.3 9.3 24.5 9.3 33.9 0z\"],\n    \"times-circle\": [512, 512, [], \"f057\", \"M256 8C119 8 8 119 8 256s111 248 248 248 248-111 248-248S393 8 256 8zm121.6 313.1c4.7 4.7 4.7 12.3 0 17L338 377.6c-4.7 4.7-12.3 4.7-17 0L256 312l-65.1 65.6c-4.7 4.7-12.3 4.7-17 0L134.4 338c-4.7-4.7-4.7-12.3 0-17l65.6-65-65.6-65.1c-4.7-4.7-4.7-12.3 0-17l39.6-39.6c4.7-4.7 12.3-4.7 17 0l65 65.7 65.1-65.6c4.7-4.7 12.3-4.7 17 0l39.6 39.6c4.7 4.7 4.7 12.3 0 17L312 256l65.6 65.1z\"],\n    \"wrench\": [512, 512, [], \"f0ad\", \"M481.156 200c9.3 0 15.12 10.155 10.325 18.124C466.295 259.992 420.419 288 368 288c-79.222 0-143.501-63.974-143.997-143.079C223.505 65.469 288.548-.001 368.002 0c52.362.001 98.196 27.949 123.4 69.743C496.24 77.766 490.523 88 481.154 88H376l-40 56 40 56h105.156zm-171.649 93.003L109.255 493.255c-24.994 24.993-65.515 24.994-90.51 0-24.993-24.994-24.993-65.516 0-90.51L218.991 202.5c16.16 41.197 49.303 74.335 90.516 90.503zM104 432c0-13.255-10.745-24-24-24s-24 10.745-24 24 10.745 24 24 24 24-10.745 24-24z\"],\n};\n\nvar icons$1 = /*#__PURE__*/Object.freeze({\n    __proto__: null,\n    createCheckbox: createCheckbox,\n    createIcon: createIcon\n});\n\nfunction attachDialogCloseHandlerWithParent(parent, closeHandler) {\n\n    var container = document.createElement(\"div\");\n    parent.appendChild(container);\n    container.appendChild(createIcon(\"times\"));\n    container.addEventListener('click', function (e) {\n        e.preventDefault();\n        e.stopPropagation();\n        closeHandler();\n    });\n}\n\nvar uiUtils = /*#__PURE__*/Object.freeze({\n    __proto__: null,\n    attachDialogCloseHandlerWithParent: attachDialogCloseHandlerWithParent\n});\n\n/**\n * Make the target element movable by clicking and dragging on the handle.  This is not a general purprose function,\n * it makes several options specific to igv dialogs, the primary one being that the\n * target is absolutely positioned in pixel coordinates\n\n */\n\nlet dragData;  // Its assumed we are only dragging one element at a time.\n\nfunction makeDraggable(target, handle, constraint) {\n\n    handle.addEventListener('mousedown', dragStart.bind(target));\n\n    function dragStart(event) {\n\n        event.stopPropagation();\n        event.preventDefault();\n\n        const dragFunction = drag.bind(this);\n        const dragEndFunction = dragEnd.bind(this);\n        const computedStyle = getComputedStyle(this);\n\n        dragData =\n            {\n                constraint,\n                dragFunction,\n                dragEndFunction,\n                screenX: event.screenX,\n                screenY: event.screenY,\n                top: parseInt(computedStyle.top.replace(\"px\", \"\")),\n                left: parseInt(computedStyle.left.replace(\"px\", \"\"))\n            };\n\n        document.addEventListener('mousemove', dragFunction);\n        document.addEventListener('mouseup', dragEndFunction);\n        document.addEventListener('mouseleave', dragEndFunction);\n        document.addEventListener('mouseexit', dragEndFunction);\n    }\n}\n\nfunction drag(event) {\n\n    if (!dragData) {\n        console.error(\"No drag data!\");\n        return;\n    }\n    event.stopPropagation();\n    event.preventDefault();\n    const dx = event.screenX - dragData.screenX;\n    const dy = event.screenY - dragData.screenY;\n\n    const left = dragData.left + dx;\n    const  top = dragData.constraint ? Math.max(dragData.constraint.minY, dragData.top  + dy) : dragData.top  + dy;\n\n    this.style.left = `${ left }px`;\n    this.style.top  = `${  top }px`;\n}\n\nfunction dragEnd(event) {\n\n    if (!dragData) {\n        console.error(\"No drag data!\");\n        return;\n    }\n    event.stopPropagation();\n    event.preventDefault();\n\n    const dragFunction = dragData.dragFunction;\n    const dragEndFunction = dragData.dragEndFunction;\n    document.removeEventListener('mousemove', dragFunction);\n    document.removeEventListener('mouseup', dragEndFunction);\n    document.removeEventListener('mouseleave', dragEndFunction);\n    document.removeEventListener('mouseexit', dragEndFunction);\n    dragData = undefined;\n}\n\nclass Dialog {\n\n    constructor({label, content, okHandler, cancelHandler}) {\n\n        const cancel = () => {\n            hide(this.elem);\n            if (typeof cancelHandler === 'function') {\n                cancelHandler(this);\n            }\n        };\n\n        // dialog container\n        this.elem = div({class: 'igv-ui-generic-dialog-container'});\n\n        // dialog header\n        const header = div({class: 'igv-ui-generic-dialog-header'});\n        this.elem.appendChild(header);\n\n        attachDialogCloseHandlerWithParent(header, cancel);\n\n        // dialog label\n        if(label) {\n            const labelDiv = div({class: 'igv-ui-dialog-one-liner'});\n            this.elem.appendChild(labelDiv);\n            labelDiv.innerHTML = label;\n        }\n\n        // input container\n        content.elem.style.margin = '8px';\n        this.elem.appendChild(content.elem);\n\n        // ok | cancel\n        const buttons = div({class: 'igv-ui-generic-dialog-ok-cancel'});\n        this.elem.appendChild(buttons);\n\n        // ok\n        this.ok = div();\n        buttons.appendChild(this.ok);\n        this.ok.textContent = 'OK';\n\n        // cancel\n        this.cancel = div();\n        buttons.appendChild(this.cancel);\n        this.cancel.textContent = 'Cancel';\n\n        this.ok.addEventListener('click',  (e) => {\n            hide(this.elem);\n            if (typeof okHandler === 'function') {\n                okHandler(this);\n            }\n        });\n\n        this.cancel.addEventListener('click', cancel);\n\n        makeDraggable(this.elem, header);\n\n\n        // Consume all clicks in component\n        this.elem.addEventListener('click', (e) => {\n            e.preventDefault();\n            e.stopPropagation();\n        });\n\n    }\n\n    present(options, e) {\n\n        this.label.textContent = options.label;\n        this.input.value = options.value;\n        this.callback = options.callback;\n\n        const page = pageCoordinates(e);\n        this.clampLocation(page.x, page.y);\n\n        show(this.elem);\n    }\n\n    clampLocation(pageX, pageY) {\n\n        let popoverRect = this.elem.getBoundingClientRect();\n        let parentRect = this.parent.getBoundingClientRect();\n        const y = Math.min(Math.max(pageY, parentRect.y), parentRect.y + parentRect.height - popoverRect.height);\n        const x = Math.min(Math.max(pageX, parentRect.x), parentRect.x + parentRect.width - popoverRect.width);\n        this.elem.style.left = x + \"px\";\n        this.elem.style.top = y + \"px\";\n    }\n}\n\nclass DataRangeDialog {\n\n    constructor(parent, okHandler) {\n\n        const panel = new Panel();\n        this.minbox = new Textbox({label: \"Minimum\", value: \"0\"});\n        panel.add(this.minbox);\n\n        this.maxbox = new Textbox({label: \"Maximum\", value: \"0\"});\n        panel.add(this.maxbox);\n\n        let callback;\n        if (okHandler) {\n            callback = (e) => {\n                okHandler(Number.parseFloat(this.minbox.value), Number.parseFloat(this.maxbox.value));\n            };\n        } else {\n            callback = (d) => {\n                console.log(`Minimum: ${this.minbox.value}`);\n                console.log(`Maximum: ${this.maxbox.value}`);\n            };\n        }\n\n        this.dialog = new Dialog({\n            //label: 'Multi-select',\n            content: panel,\n            okHandler: callback\n        });\n\n        // Overide some css styles -- TODO redesign this.\n        this.dialog.elem.style.position = \"absolute\";\n\n        hide(this.dialog.elem);\n        parent.appendChild(this.dialog.elem);\n    }\n\n    show({min, max}) {\n        if (min !== undefined) this.minbox.value = min.toString();\n        if (max !== undefined) this.maxbox.value = max.toString();\n        show(this.dialog.elem);\n    }\n}\n\nconst httpMessages =\n    {\n        \"401\": \"Access unauthorized\",\n        \"403\": \"Access forbidden\",\n        \"404\": \"Not found\"\n    };\n\n\nclass AlertDialog {\n    /**\n     * Initialize a new alert dialog\n     * @param parent\n     * @param alertProps - Optional - properties such as scroll to error\n     */\n    constructor(parent, alertProps) {\n        this.alertProps = Object.assign({\n            /** When an alert is presented - focus occur */\n            shouldFocus: true,\n            /** When focus occur - scroll into that element in the view */\n            preventScroll: false\n        }, alertProps);\n\n        // container\n        this.container = div({class: \"igv-ui-alert-dialog-container\"});\n        parent.appendChild(this.container);\n        this.container.setAttribute('tabIndex', '-1');\n\n        // header\n        const header = div();\n        this.container.appendChild(header);\n\n        this.errorHeadline = div();\n        header.appendChild(this.errorHeadline);\n        this.errorHeadline.textContent = '';\n\n        // body container\n        let bodyContainer = div({class: 'igv-ui-alert-dialog-body'});\n        this.container.appendChild(bodyContainer);\n\n        // body copy\n        this.body = div({class: 'igv-ui-alert-dialog-body-copy'});\n        bodyContainer.appendChild(this.body);\n\n        // ok container\n        let ok_container = div();\n        this.container.appendChild(ok_container);\n\n        // ok\n        this.ok = div();\n        ok_container.appendChild(this.ok);\n        this.ok.textContent = 'OK';\n\n        const okHandler = () => {\n\n            if (typeof this.callback === 'function') {\n                this.callback(\"OK\");\n                this.callback = undefined;\n            }\n            this.body.innerHTML = '';\n            hide(this.container);\n        };\n\n        this.ok.addEventListener('click', event => {\n\n            event.stopPropagation();\n\n            okHandler();\n        });\n\n        this.container.addEventListener('keypress', event => {\n\n            event.stopPropagation();\n\n            if ('Enter' === event.key) {\n                okHandler();\n            }\n        });\n\n        makeDraggable(this.container, header);\n\n        hide(this.container);\n    }\n\n    present(alert, callback) {\n\n        this.errorHeadline.textContent = alert.message ? 'ERROR' : '';\n        let string = alert.message || alert;\n\n        if (httpMessages.hasOwnProperty(string)) {\n            string = httpMessages[string];\n        }\n\n        const clean = purify.sanitize(string);\n\n        this.body.innerHTML = clean;\n        this.callback = callback;\n        show(this.container);\n        if (this.alertProps.shouldFocus) {\n            this.container.focus(\n                { preventScroll: this.alertProps.preventScroll }\n            );\n        }\n    }\n}\n\nclass AlertSingleton {\n    constructor(root) {\n\n        if (root) {\n            this.alertDialog = undefined;\n        }\n    }\n\n    init(root) {\n        this.alertDialog = new AlertDialog(root);\n    }\n\n    present(alert, callback) {\n        this.alertDialog.present(alert, callback);\n    }\n\n}\n\nvar alertSingleton = new AlertSingleton();\n\n// The global Alert dialog\n\nlet alertDialog;\n\nconst Alert = {\n\n    init(root, config={}) {\n\t    alertDialog = new AlertDialog(root, config);\n    },\n\n    presentAlert (alert, callback) {\n        if(!alertDialog) {\n            this.init(document.body);\n        }\n        alertDialog.present(alert, callback);\n    },\n};\n\nclass InputDialog {\n\n    constructor(parent) {\n\n        this.parent = parent;\n\n        // dialog container\n        this.container = div({class: 'igv-ui-generic-dialog-container'});\n        parent.appendChild(this.container);\n\n        // const { x, y, width, height } = this.container.getBoundingClientRect();\n        // console.log(`InputDialog - x ${ x } y ${ y } width ${ width } height ${ height }`)\n\n        // dialog header\n        const header = div({class: 'igv-ui-generic-dialog-header'});\n        this.container.appendChild(header);\n\n        // dialog label\n        this.label = div({class: 'igv-ui-generic-dialog-one-liner'});\n        this.container.appendChild(this.label);\n        this.label.text = 'Unlabeled';\n\n        // input container\n        this.input_container = div({class: 'igv-ui-generic-dialog-input'});\n        this.container.appendChild(this.input_container);\n        //\n        this.input = document.createElement(\"input\");\n        this.input_container.appendChild(this.input);\n\n\n        // ok | cancel\n        const buttons = div({class: 'igv-ui-generic-dialog-ok-cancel'});\n        this.container.appendChild(buttons);\n\n        // ok\n        this.ok = div();\n        buttons.appendChild(this.ok);\n        this.ok.textContent = 'OK';\n\n        // cancel\n        this.cancel = div();\n        buttons.appendChild(this.cancel);\n        this.cancel.textContent = 'Cancel';\n\n        hide(this.container);\n\n        this.input.addEventListener('keyup', e => {\n            if (13 === e.keyCode) {\n                if (typeof this.callback === 'function') {\n                    this.callback(this.input.value);\n                    this.callback = undefined;\n                }\n                this.input.value = undefined;\n                hide(this.container);\n            }\n        });\n\n        this.ok.addEventListener('click', () => {\n            if (typeof this.callback === 'function') {\n                this.callback(this.input.value);\n                this.callback = undefined;\n            }\n            this.input.value = undefined;\n            hide(this.container);\n        });\n\n        const cancel = () => {\n            this.input.value = '';\n            hide(this.container);\n        };\n\n        this.cancel.addEventListener('click', cancel);\n\n        attachDialogCloseHandlerWithParent(header, cancel);\n        makeDraggable(this.container, header);\n\n    }\n\n    get value() {\n        return purify.sanitize(this.input.value)\n    }\n\n    present(options, e) {\n\n        this.label.textContent = options.label;\n        this.input.value = options.value;\n        this.callback = options.callback || options.click;\n\n        show(this.container);\n        this.clampLocation(e.clientX, e.clientY);\n\n    }\n\n    clampLocation(clientX, clientY) {\n\n        const {width: w, height: h} = this.container.getBoundingClientRect();\n        const wh = window.innerHeight;\n        const ww = window.innerWidth;\n\n        const y = Math.min(wh - h, clientY);\n        const x = Math.min(ww - w, clientX);\n        this.container.style.left = `${x}px`;\n        this.container.style.top = `${y}px`;\n\n    }\n}\n\nconst appleCrayonPalette =\n    {\n        licorice: \"#000000\",\n        lead: \"#1e1e1e\",\n        tungsten: \"#3a3a3a\",\n        iron: \"#545453\",\n        steel: \"#6e6e6e\",\n        tin: \"#878687\",\n        nickel: \"#888787\",\n        aluminum: \"#a09fa0\",\n        magnesium: \"#b8b8b8\",\n        silver: \"#d0d0d0\",\n        mercury: \"#e8e8e8\",\n        snow: \"#ffffff\",\n        //\n        cayenne: \"#891100\",\n        mocha: \"#894800\",\n        aspargus: \"#888501\",\n        fern: \"#458401\",\n        clover: \"#028401\",\n        moss: \"#018448\",\n        teal: \"#008688\",\n        ocean: \"#004a88\",\n        midnight: \"#001888\",\n        eggplant: \"#491a88\",\n        plum: \"#891e88\",\n        maroon: \"#891648\",\n        //\n        maraschino: \"#ff2101\",\n        tangerine: \"#ff8802\",\n        lemon: \"#fffa03\",\n        lime: \"#83f902\",\n        spring: \"#05f802\",\n        seam_foam: \"#03f987\",\n        turquoise: \"#00fdff\",\n        aqua: \"#008cff\",\n        blueberry: \"#002eff\",\n        grape: \"#8931ff\",\n        magenta: \"#ff39ff\",\n        strawberry: \"#ff2987\",\n        //\n        salmon: \"#ff726e\",\n        cantaloupe: \"#ffce6e\",\n        banana: \"#fffb6d\",\n        honeydew: \"#cefa6e\",\n        flora: \"#68f96e\",\n        spindrift: \"#68fbd0\",\n        ice: \"#68fdff\",\n        sky: \"#6acfff\",\n        orchid: \"#6e76ff\",\n        lavender: \"#d278ff\",\n        bubblegum: \"#ff7aff\",\n        carnation: \"#ff7fd3\"\n    };\n\nconst nucleotideColorComponents = {\n    \"A\": [0, 200, 0],\n    \"C\": [0, 0, 200],\n    \"T\": [255, 0, 0],\n    \"G\": [209, 113, 5],\n    \"a\": [0, 200, 0],\n    \"c\": [0, 0, 200],\n    \"t\": [255, 0, 0],\n    \"g\": [209, 113, 5],\n    \"N\": [80, 80, 80]\n};\n\nconst nucleotideColors = {\n    \"A\": \"rgb(  0, 200,   0)\",\n    \"C\": \"rgb(  0,   0, 200)\",\n    \"T\": \"rgb(255,   0,   0)\",\n    \"G\": \"rgb(209, 113,   5)\",\n    \"a\": \"rgb(  0, 200,   0)\",\n    \"c\": \"rgb(  0,   0, 200)\",\n    \"t\": \"rgb(255,   0,   0)\",\n    \"g\": \"rgb(209, 113,   5)\",\n    \"N\": \"rgb(80, 80, 80)\"\n};\n\nconst colorPalettes = {\n\n    Set1:\n        [\n            \"rgb(228,26,28)\",\n            \"rgb(55,126,184)\",\n            \"rgb(77,175,74)\",\n            \"rgb(166,86,40)\",\n            \"rgb(152,78,163)\",\n            \"rgb(255,127,0)\",\n            \"rgb(247,129,191)\",\n            \"rgb(153,153,153)\",\n            \"rgb(255,255,51)\"\n        ],\n\n    Dark2:\n        [\n            \"rgb(27,158,119)\",\n            \"rgb(217,95,2)\",\n            \"rgb(117,112,179)\",\n            \"rgb(231,41,138)\",\n            \"rgb(102,166,30)\",\n            \"rgb(230,171,2)\",\n            \"rgb(166,118,29)\",\n            \"rgb(102,102,102)\"\n        ],\n\n    Set2:\n        [\n            \"rgb(102, 194,165)\",\n            \"rgb(252,141,98)\",\n            \"rgb(141,160,203)\",\n            \"rgb(231,138,195)\",\n            \"rgb(166,216,84)\",\n            \"rgb(255,217,47)\",\n            \"rgb(229,196,148)\",\n            \"rgb(179,179,179)\"\n        ],\n\n    Set3:\n        [\n            \"rgb(141,211,199)\",\n            \"rgb(255,255,179)\",\n            \"rgb(190,186,218)\",\n            \"rgb(251,128,114)\",\n            \"rgb(128,177,211)\",\n            \"rgb(253,180,98)\",\n            \"rgb(179,222,105)\",\n            \"rgb(252,205,229)\",\n            \"rgb(217,217,217)\",\n            \"rgb(188,128,189)\",\n            \"rgb(204,235,197)\",\n            \"rgb(255,237,111)\"\n        ],\n\n    Pastel1:\n        [\n            \"rgb(251,180,174)\",\n            \"rgb(179,205,227)\",\n            \"rgb(204,235,197)\",\n            \"rgb(222,203,228)\",\n            \"rgb(254,217,166)\",\n            \"rgb(255,255,204)\",\n            \"rgb(229,216,189)\",\n            \"rgb(253,218,236)\"\n        ],\n\n    Pastel2:\n        [\n            \"rgb(173,226,207)\",\n            \"rgb(253,205,172)\",\n            \"rgb(203,213,232)\",\n            \"rgb(244,202,228)\",\n            \"rgb(230,245,201)\",\n            \"rgb(255,242,174)\",\n            \"rgb(243,225,206)\"\n        ],\n\n    Accent:\n        [\n            \"rgb(127,201,127)\",\n            \"rgb(190,174,212)\",\n            \"rgb(253,192,134)\",\n            \"rgb(255,255,153)\",\n            \"rgb(56,108,176)\",\n            \"rgb(240,2,127)\",\n            \"rgb(191,91,23)\"\n        ]\n};\n\nfunction PaletteColorTable  (palette) {\n\n    this.colors = colorPalettes[palette];\n\n    if (!Array.isArray(this.colors)) this.colors = [];\n    this.colorTable = {};\n    this.nextIdx = 0;\n    this.colorGenerator = new RandomColorGenerator();\n\n}\n\nPaletteColorTable.prototype.getColor = function (key) {\n\n    if (!this.colorTable.hasOwnProperty(key)) {\n        if (this.nextIdx < this.colors.length) {\n            this.colorTable[key] = this.colors[this.nextIdx];\n        } else {\n            this.colorTable[key] = this.colorGenerator.get();\n        }\n        this.nextIdx++;\n    }\n    return this.colorTable[key];\n};\n\n// Random color generator from https://github.com/sterlingwes/RandomColor/blob/master/rcolor.js\n// Free to use & distribute under the MIT license\n// Wes Johnson (@SterlingWes)\n//\n// inspired by http://martin.ankerl.com/2009/12/09/how-to-create-random-colors-programmatically/\nfunction RandomColorGenerator() {\n    this.hue = Math.random();\n    this.goldenRatio = 0.618033988749895;\n    this.hexwidth = 2;\n}\n\nRandomColorGenerator.prototype.hsvToRgb = function (h, s, v) {\n    var h_i = Math.floor(h * 6),\n        f = h * 6 - h_i,\n        p = v * (1 - s),\n        q = v * (1 - f * s),\n        t = v * (1 - (1 - f) * s),\n        r = 255,\n        g = 255,\n        b = 255;\n    switch (h_i) {\n        case 0:\n            r = v, g = t, b = p;\n            break;\n        case 1:\n            r = q, g = v, b = p;\n            break;\n        case 2:\n            r = p, g = v, b = t;\n            break;\n        case 3:\n            r = p, g = q, b = v;\n            break;\n        case 4:\n            r = t, g = p, b = v;\n            break;\n        case 5:\n            r = v, g = p, b = q;\n            break;\n    }\n    return [Math.floor(r * 256), Math.floor(g * 256), Math.floor(b * 256)];\n};\n\nRandomColorGenerator.prototype.padHex = function (str) {\n    if (str.length > this.hexwidth) return str;\n    return new Array(this.hexwidth - str.length + 1).join('0') + str;\n};\n\nRandomColorGenerator.prototype.get = function (saturation, value) {\n    this.hue += this.goldenRatio;\n    this.hue %= 1;\n    if (typeof saturation !== \"number\") saturation = 0.5;\n    if (typeof value !== \"number\") value = 0.95;\n    var rgb = this.hsvToRgb(this.hue, saturation, value);\n\n    return \"#\" + this.padHex(rgb[0].toString(16))\n        + this.padHex(rgb[1].toString(16))\n        + this.padHex(rgb[2].toString(16));\n\n};\n\nclass GenericContainer {\n\n    constructor({parent,  top, left, width, height, border, closeHandler}) {\n\n        let container = div({class: 'igv-ui-generic-container'});\n        parent.appendChild(container);\n        hide(container);\n        this.container = container;\n\n        if(top !== undefined) {\n            this.container.style.top = `${ top }px`;\n        }\n        if(left !== undefined) {\n            this.container.style.left = `${ left }px`;\n        }\n        if (width !== undefined) {\n            this.container.style.width = `${ width }px`;\n        }\n        if (height !== undefined) {\n            this.container.style.height = `${ height }px`;\n        }\n        if(border) {\n            this.container.style.border = border;\n        }\n        //\n        // let bbox = parent.getBoundingClientRect();\n        // this.origin = {x: bbox.x, y: bbox.y};\n        // this.container.offset({left: this.origin.x, top: this.origin.y});\n\n        // header\n        const header = div();\n        this.container.appendChild(header);\n\n        // close button\n        attachDialogCloseHandlerWithParent(header, (e) => {\n            hide(this.container);\n            if(typeof closeHandler === \"function\") {\n                closeHandler(e);\n            }\n        });\n\n        makeDraggable(this.container, header);\n    }\n\n    show() {\n        show(this.container);\n    }\n\n    hide() {\n        hide(this.container);\n    }\n\n    dispose() {\n        if(this.container.parent)  {\n            this.container.parent.removeChild(this.container);\n        }\n    }\n}\n\nclass ColorPicker extends GenericContainer {\n\n    constructor({parent, top, left, width, height, defaultColors, colorHandler}) {\n\n        super({ parent, top, left, width, height, border: '1px solid gray'});\n\n        createColorSwatchSelector(this.container, colorHandler, defaultColors);\n    }\n\n}\n\nconst createColorSwatchSelector = (container, colorHandler, defaultColors) => {\n\n    const hexColorStrings = Object.values(appleCrayonPalette);\n\n    for (let hexColorString of hexColorStrings) {\n        const swatch = div({ class: 'igv-ui-color-swatch' });\n        container.appendChild(swatch);\n        decorateSwatch(swatch, hexColorString, colorHandler);\n    }\n\n    if (defaultColors) {\n        for (let hexColorString of defaultColors) {\n            const swatch = div({ class: 'igv-ui-color-swatch' });\n            container.appendChild(swatch);\n            decorateSwatch(swatch, hexColorString, colorHandler);\n        }\n    }\n\n};\n\nconst decorateSwatch = (swatch, hexColorString, colorHandler) => {\n\n    swatch.style.backgroundColor = hexColorString;\n\n    swatch.addEventListener('mouseenter', e => swatch.style.borderColor = hexColorString);\n\n    swatch.addEventListener('mouseleave', e => swatch.style.borderColor = 'white');\n\n    swatch.addEventListener('click', event => {\n        event.stopPropagation();\n        colorHandler(hexColorString);\n    });\n\n    swatch.addEventListener('touchend', event => {\n        event.stopPropagation();\n        colorHandler(hexColorString);\n    });\n\n};\n\nclass Popover {\n\n    constructor(parent, title) {\n\n        this.parent = parent;\n\n        // popover\n        this.popover = div({ class: \"igv-ui-popover\" });\n        parent.appendChild(this.popover);\n\n        // header\n        const popoverHeader = div();\n        this.popover.appendChild(popoverHeader);\n\n        const titleElement = div();\n        popoverHeader.appendChild(titleElement);\n        if (title) {\n            titleElement.textContent = title;\n        }\n\n        attachDialogCloseHandlerWithParent(popoverHeader,  () => this.hide());\n        makeDraggable(this.popover, popoverHeader);\n\n        // content\n        this.popoverContent = div();\n        this.popover.appendChild(this.popoverContent);\n\n        this.popover.style.display = 'none';\n\n\n    }\n\n    presentContentWithEvent(e, content) {\n\n        this.popover.style.display = 'block';\n\n        this.popoverContent.innerHTML = content;\n\n        present(e, this.popover, this.popoverContent);\n\n    }\n\n    presentMenu(e, menuItems) {\n\n        if (0 === menuItems.length) {\n            return\n        }\n\n        this.popover.style.display = 'block';\n\n        const menuElements = createMenuElements(menuItems, this.popover);\n        for (let item of menuElements) {\n            this.popoverContent.appendChild(item.object);\n        }\n\n        present(e, this.popover, this.popoverContent);\n    }\n\n    hide() {\n        this.popover.style.display = 'none';\n        this.dispose();\n    }\n\n    dispose() {\n\n        if (this.popover) {\n            this.popover.parentNode.removeChild(this.popover);\n        }\n\n        const keys = Object.keys(this);\n        for (let key of keys) {\n            this[ key ] = undefined;\n        }\n    }\n\n}\n\nfunction present(e, popover, popoverContent) {\n\n    const { x, y, width } = translateMouseCoordinates(e, popover.parentNode);\n    popover.style.top  = `${ y }px`;\n\n    const { width: w } = popover.getBoundingClientRect();\n\n    const xmax = x + w;\n    const delta = xmax - width;\n\n    popover.style.left = `${ xmax > width ? (x - delta) : x }px`;\n    popoverContent.style.maxWidth = `${ Math.min(w, width) }px`;\n\n\n}\n\nfunction createMenuElements(itemList, popover) {\n\n    const list  = itemList.map(function (item, i) {\n        let elem;\n\n        if (typeof item === 'string') {\n            elem = div();\n            elem.innerHTML = item;\n        } else if (typeof item === 'Node') {\n            elem = item;\n        } else {\n            if (typeof item.init === 'function') {\n                item.init();\n            }\n\n            if (\"checkbox\" === item.type) {\n                elem = createCheckbox(\"Show all bases\", item.value);\n            } else if(\"color\" === item.type) {\n                const colorPicker = new ColorPicker({\n                    parent: popover.parentElement,\n                    width: 364,\n                    //defaultColor: 'aqua',\n                    colorHandler: (color) => item.click(color)\n                });\n                elem = div();\n                if (typeof item.label === 'string') {\n                    elem.innerHTML = item.label;\n                }\n                const clickHandler =  e => {\n                    colorPicker.show();\n                    hide(popover);\n                    e.preventDefault();\n                    e.stopPropagation();\n                };\n                elem.addEventListener('click', clickHandler);\n                elem.addEventListener('touchend', clickHandler);\n                elem.addEventListener('mouseup', function (e) {\n                    e.preventDefault();\n                    e.stopPropagation();\n                });\n            }\n\n            else {\n                elem = div();\n                if (typeof item.label === 'string') {\n                    elem.innerHTML = item.label;\n                }\n            }\n\n            if (item.click && \"color\" !== item.type) {\n                elem.addEventListener('click', handleClick);\n                elem.addEventListener('touchend', handleClick);\n                elem.addEventListener('mouseup', function (e) {\n                    e.preventDefault();\n                    e.stopPropagation();\n                });\n\n                // eslint-disable-next-line no-inner-declarations\n                function handleClick(e) {\n                    item.click();\n                    hide(popover);\n                    e.preventDefault();\n                    e.stopPropagation();\n                }\n            }\n        }\n\n\n        return { object: elem, init: item.init };\n    });\n\n    return list;\n}\n\nconst style = {\n    display: 'flex',\n    flexDirection: 'row',\n    alignItems: 'center',\n    backgroundColor: 'transparent',\n};\n\nclass Checkbox {\n\n    constructor({selected, label, onchange}) {\n\n        this.state = selected;\n        this.onchange = onchange;\n        this.elem = div({style: style});\n\n        const svgDiv = div({\n            style: {\n                width: '14px',\n                height: '14px',\n                borderColor: 'gray',\n                borderWidth: '1px',\n                borderStyle: 'solid'\n            }\n        });\n        this.svg = createIcon('check', (true === selected ? '#444' : 'transparent'));\n        this.svg.style.width = '12px';\n        this.svg.style.height = '12px';\n        svgDiv.appendChild(this.svg);\n        this.elem.appendChild(svgDiv);\n\n        if (label) {\n            const d = div({style: {marginLeft: '5px'}}); //{ class: 'igv-some-label-class' });\n            d.textContent = label;\n            this.elem.appendChild(d);\n        }\n\n        const handleClick = (e) => {\n            e.preventDefault();\n            e.stopPropagation();\n            const newState = !this.state;\n            this.selected = newState;\n            if (typeof this.onchange === 'function') {\n                this.onchange(newState);\n            }\n        };\n        this.elem.addEventListener('click', handleClick);\n        this.elem.addEventListener('touchend', handleClick);\n    }\n\n    set selected(selected) {\n        this.state = selected;\n        const p = this.svg.querySelector('path');\n        p.setAttributeNS(null, 'fill', (true === selected ? '#444' : 'transparent'));\n    }\n\n    get selected() {\n        return this.state;\n    }\n\n    onchange(handler) {\n        this.onchange = handler;\n    }\n\n\n}\n\nclass GenericColorPicker extends GenericContainer {\n\n    constructor({parent, width}) {\n        super({parent, width, border: '1px solid gray'});\n    }\n\n    configure(defaultColors, colorHandlers) {\n\n        this.colorHandlers = colorHandlers;\n\n        // active color handler defaults to handler with 'color' as key\n        this.setActiveColorHandler('color');\n\n        this.createSwatches(defaultColors);\n\n    }\n\n    setActiveColorHandler(option) {\n        this.activeColorHandler = this.colorHandlers[option];\n    }\n\n    createSwatches(defaultColors) {\n\n        this.container.querySelectorAll('.igv-ui-color-swatch').forEach(swatch => swatch.remove());\n\n        const hexColorStrings = Object.values(appleCrayonPalette);\n\n        for (let hexColorString of hexColorStrings) {\n            const swatch = div({class: 'igv-ui-color-swatch'});\n            this.container.appendChild(swatch);\n            this.decorateSwatch(swatch, hexColorString);\n        }\n\n        if (defaultColors) {\n            for (let hexColorString of defaultColors) {\n                const swatch = div({class: 'igv-ui-color-swatch'});\n                this.container.appendChild(swatch);\n                this.decorateSwatch(swatch, hexColorString);\n            }\n        }\n\n    }\n\n    decorateSwatch(swatch, hexColorString) {\n\n        swatch.style.backgroundColor = hexColorString;\n\n        swatch.addEventListener('mouseenter', () => swatch.style.borderColor = hexColorString);\n\n        swatch.addEventListener('mouseleave', () => swatch.style.borderColor = 'white');\n\n        swatch.addEventListener('click', event => {\n            event.stopPropagation();\n            this.activeColorHandler(hexColorString);\n        });\n\n        swatch.addEventListener('touchend', event => {\n            event.stopPropagation();\n            this.activeColorHandler(hexColorString);\n        });\n\n    }\n\n}\n\n/**\n * Create a table with an optional row click handler *\n *\n * @param tableConfig {\n *     headers: column headers (strings)\n *     rows: row data (array of arrays, 1 for ecah row)\n *     rowClickHandler:  Optional click handler for a row.  Supplied function will receive a row's data as an array\n * }\n * @returns {HTMLTableElement}\n */\nfunction createTable(tableConfig) {\n\n    const table = document.createElement(\"table\");\n    table.classList.add(\"igv-ui-table\");\n    table.id = \"variant_table\";\n\n    const thead = document.createElement('thead');\n    table.appendChild(thead);\n    const headerRow = thead.insertRow(0);\n\n    const headers = tableConfig.headers;\n    for (let j = 0; j < headers.length; j++) {\n        var cell = document.createElement(\"th\");\n        headerRow.appendChild(cell);\n        cell.innerHTML = headers[j];\n    }\n\n    const tbody = document.createElement('tbody');\n    table.appendChild(tbody);\n    const tableRows = tableConfig.rows;\n    for (let rowData of tableRows) {\n\n        const row = document.createElement(\"tr\");\n        tbody.appendChild(row);\n\n        for (let j = 0; j < headers.length; j++) {\n            var value = rowData[j];\n            cell = document.createElement(\"td\");\n            row.appendChild(cell);\n            cell.innerHTML = value;\n        }\n\n        if (tableConfig.rowClickHandler) {\n            row.onclick = (event) => {\n                tableConfig.rowClickHandler(rowData);\n            };\n        }\n    }\n\n    return table\n\n}\n\n/**\n * Wraps a simple table (see components/table.js) in a popup component with drag bar and close control.  The table\n * is initially hidden (display == none)\n *\n */\n\nclass IGVTable {\n\n    /**\n     *\n     * @param parent - parent element for the popup's html element\n     * @param tableConfig - see components/table.js\n     */\n    constructor(parent, tableConfig) {\n\n        this.parent = parent;\n\n        // popover\n        this.popover = div({class: \"igv-ui-popover\"});\n        parent.appendChild(this.popover);\n\n        // header\n        const popoverHeader = div();\n        this.popover.appendChild(popoverHeader);\n\n        const titleElement = div();\n        popoverHeader.appendChild(titleElement);\n        if (tableConfig.title) {\n            titleElement.innerHTML = tableConfig.title;\n        }\n\n        attachDialogCloseHandlerWithParent(popoverHeader, () => this.hide());\n        makeDraggable(this.popover, popoverHeader);\n\n        const tableContainer = document.createElement(\"div\");\n        tableContainer.style.maxHeight = tableConfig.maxHeight ? tableConfig.maxHeight + \"px\" : \"800px\";\n        tableContainer.style.overflow = \"auto\";\n        this.popover.appendChild(tableContainer);\n\n        // TODO -- this will be passed as an argument\n\n        const table = createTable(tableConfig);\n        tableContainer.appendChild(table);\n\n        this.popover.style.display = 'none';\n\n    }\n\n    show() {\n        this.popover.style.display = 'block';\n    }\n\n    hide() {\n        this.popover.style.display = 'none';\n    }\n\n    dispose() {\n\n        if (this.popover) {\n            this.popover.parentNode.removeChild(this.popover);\n        }\n    }\n\n}\n\nfunction embedCSS() {\n    const style = document.createElement('style');\n    style.setAttribute('type', 'text/css');\n    style.setAttribute('title', 'igv-ui.css');\n    style.innerHTML = `.igv-ui-popover {\n  cursor: default;\n  position: absolute;\n  z-index: 2048;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: 1px;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: small;\n  background-color: white;\n}\n.igv-ui-popover > div:first-child {\n  display: flex;\n  flex-direction: row;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-ui-popover > div:first-child > div:first-child {\n  margin-left: 4px;\n}\n.igv-ui-popover > div:first-child > div:last-child {\n  margin-right: 4px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-ui-popover > div:first-child > div:last-child:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-ui-popover > div:last-child {\n  overflow-y: auto;\n  overflow-x: hidden;\n  max-height: 400px;\n  max-width: 800px;\n  background-color: white;\n}\n.igv-ui-popover > div:last-child > div {\n  user-select: all;\n  margin-left: 4px;\n  margin-right: 4px;\n  min-width: 220px;\n  overflow-x: hidden;\n  text-overflow: ellipsis;\n  white-space: nowrap;\n}\n.igv-ui-popover > div:last-child > div > span {\n  font-weight: bolder;\n}\n.igv-ui-popover > div:last-child hr {\n  width: 100%;\n}\n\n.igv-ui-alert-dialog-container {\n  box-sizing: content-box;\n  position: absolute;\n  z-index: 2048;\n  top: 50%;\n  left: 50%;\n  width: 400px;\n  height: 200px;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  outline: none;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 15px;\n  font-weight: 400;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: space-between;\n  align-items: center;\n}\n.igv-ui-alert-dialog-container > div:first-child {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-ui-alert-dialog-container > div:first-child div:first-child {\n  padding-left: 8px;\n}\n.igv-ui-alert-dialog-container .igv-ui-alert-dialog-body {\n  -webkit-user-select: text;\n  -moz-user-select: text;\n  -ms-user-select: text;\n  user-select: text;\n  color: #373737;\n  width: 100%;\n  height: calc(100% - 24px - 64px);\n  overflow-y: scroll;\n}\n.igv-ui-alert-dialog-container .igv-ui-alert-dialog-body .igv-ui-alert-dialog-body-copy {\n  margin: 16px;\n  width: auto;\n  height: auto;\n  overflow-wrap: break-word;\n  word-break: break-word;\n  background-color: white;\n  border: unset;\n}\n.igv-ui-alert-dialog-container > div:last-child {\n  width: 100%;\n  margin-bottom: 10px;\n  background-color: white;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: center;\n  align-items: center;\n}\n.igv-ui-alert-dialog-container > div:last-child div {\n  margin: unset;\n  width: 40px;\n  height: 30px;\n  line-height: 30px;\n  text-align: center;\n  color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: small;\n  font-weight: 400;\n  border-color: #2B81AF;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 4px;\n  background-color: #2B81AF;\n}\n.igv-ui-alert-dialog-container > div:last-child div:hover {\n  cursor: pointer;\n  border-color: #25597f;\n  background-color: #25597f;\n}\n\n.igv-ui-color-swatch {\n  position: relative;\n  box-sizing: content-box;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: wrap;\n  justify-content: center;\n  align-items: center;\n  width: 32px;\n  height: 32px;\n  border-style: solid;\n  border-width: 2px;\n  border-color: white;\n  border-radius: 4px;\n}\n\n.igv-ui-color-swatch:hover {\n  border-color: dimgray;\n}\n\n.igv-ui-colorpicker-menu-close-button {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  width: 100%;\n  height: 32px;\n  margin-top: 4px;\n  margin-bottom: 4px;\n  padding-right: 8px;\n}\n.igv-ui-colorpicker-menu-close-button i.fa {\n  display: block;\n  margin-left: 4px;\n  margin-right: 4px;\n  color: #5f5f5f;\n}\n.igv-ui-colorpicker-menu-close-button i.fa:hover,\n.igv-ui-colorpicker-menu-close-button i.fa:focus,\n.igv-ui-colorpicker-menu-close-button i.fa:active {\n  cursor: pointer;\n  color: #0f0f0f;\n}\n\n.igv-ui-generic-dialog-container {\n  box-sizing: content-box;\n  position: fixed;\n  top: 0;\n  left: 0;\n  width: 300px;\n  height: 200px;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  z-index: 2048;\n  background-color: white;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header div {\n  margin-right: 4px;\n  margin-bottom: 2px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-header div:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-one-liner {\n  color: #373737;\n  width: 95%;\n  height: 24px;\n  line-height: 24px;\n  text-align: left;\n  margin-top: 8px;\n  padding-left: 8px;\n  overflow-wrap: break-word;\n  background-color: white;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input {\n  margin-top: 8px;\n  width: 95%;\n  height: 24px;\n  color: #373737;\n  line-height: 24px;\n  padding-left: 8px;\n  background-color: white;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input div {\n  width: 30%;\n  height: 100%;\n  font-size: 16px;\n  text-align: right;\n  padding-right: 8px;\n  background-color: white;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input input {\n  display: block;\n  height: 100%;\n  width: 100%;\n  padding-left: 4px;\n  font-family: \"Open Sans\", sans-serif;\n  font-weight: 400;\n  color: #373737;\n  text-align: left;\n  outline: none;\n  border-style: solid;\n  border-width: thin;\n  border-color: #7F7F7F;\n  background-color: white;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-label-input input {\n  width: 50%;\n  font-size: 16px;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input {\n  margin-top: 8px;\n  width: calc(100% - 16px);\n  height: 24px;\n  color: #373737;\n  line-height: 24px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input input {\n  display: block;\n  height: 100%;\n  width: 100%;\n  padding-left: 4px;\n  font-family: \"Open Sans\", sans-serif;\n  font-weight: 400;\n  color: #373737;\n  text-align: left;\n  outline: none;\n  border-style: solid;\n  border-width: thin;\n  border-color: #7F7F7F;\n  background-color: white;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-input input {\n  font-size: 16px;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel {\n  width: 100%;\n  height: 28px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div {\n  margin-top: 32px;\n  color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  width: 75px;\n  height: 28px;\n  line-height: 28px;\n  text-align: center;\n  border-color: transparent;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 2px;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:first-child {\n  margin-left: 32px;\n  margin-right: 0;\n  background-color: #5ea4e0;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:last-child {\n  margin-left: 0;\n  margin-right: 32px;\n  background-color: #c4c4c4;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:first-child:hover {\n  cursor: pointer;\n  background-color: #3b5c7f;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok-cancel div:last-child:hover {\n  cursor: pointer;\n  background-color: #7f7f7f;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok {\n  width: 100%;\n  height: 36px;\n  margin-top: 32px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok div {\n  width: 98px;\n  height: 36px;\n  line-height: 36px;\n  text-align: center;\n  color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  border-color: white;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 4px;\n  background-color: #2B81AF;\n}\n.igv-ui-generic-dialog-container .igv-ui-generic-dialog-ok div:hover {\n  cursor: pointer;\n  background-color: #25597f;\n}\n\n.igv-ui-generic-container {\n  box-sizing: content-box;\n  position: absolute;\n  z-index: 2048;\n  background-color: white;\n  cursor: pointer;\n  display: flex;\n  flex-direction: row;\n  flex-wrap: wrap;\n  justify-content: flex-start;\n  align-items: center;\n}\n.igv-ui-generic-container > div:first-child {\n  cursor: move;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  height: 24px;\n  width: 100%;\n  background-color: #dddddd;\n}\n.igv-ui-generic-container > div:first-child > div {\n  display: block;\n  color: #5f5f5f;\n  cursor: pointer;\n  width: 14px;\n  height: 14px;\n  margin-right: 8px;\n  margin-bottom: 4px;\n}\n\n.igv-ui-dialog {\n  z-index: 2048;\n  position: fixed;\n  width: fit-content;\n  height: fit-content;\n  display: flex;\n  flex-flow: column;\n  flex-wrap: nowrap;\n  justify-content: flex-start;\n  background-color: white;\n  border-color: #7F7F7F;\n  border-radius: 4px;\n  border-style: solid;\n  border-width: thin;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n}\n.igv-ui-dialog .igv-ui-dialog-header {\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: flex-end;\n  align-items: center;\n  width: 100%;\n  height: 24px;\n  cursor: move;\n  border-top-left-radius: 4px;\n  border-top-right-radius: 4px;\n  border-bottom-color: #7F7F7F;\n  border-bottom-style: solid;\n  border-bottom-width: thin;\n  background-color: #eee;\n}\n.igv-ui-dialog .igv-ui-dialog-header div {\n  margin-right: 4px;\n  margin-bottom: 2px;\n  height: 12px;\n  width: 12px;\n  color: #7F7F7F;\n}\n.igv-ui-dialog .igv-ui-dialog-header div:hover {\n  cursor: pointer;\n  color: #444;\n}\n.igv-ui-dialog .igv-ui-dialog-one-liner {\n  width: 95%;\n  height: 24px;\n  line-height: 24px;\n  text-align: left;\n  margin: 8px;\n  overflow-wrap: break-word;\n  background-color: white;\n  font-weight: bold;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel {\n  width: 100%;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div {\n  margin: 16px;\n  margin-top: 32px;\n  color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: 14px;\n  font-weight: 400;\n  width: 75px;\n  height: 28px;\n  line-height: 28px;\n  text-align: center;\n  border-color: transparent;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 2px;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div:first-child {\n  background-color: #5ea4e0;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div:last-child {\n  background-color: #c4c4c4;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div:first-child:hover {\n  cursor: pointer;\n  background-color: #3b5c7f;\n}\n.igv-ui-dialog .igv-ui-dialog-ok-cancel div:last-child:hover {\n  cursor: pointer;\n  background-color: #7f7f7f;\n}\n.igv-ui-dialog .igv-ui-dialog-ok {\n  width: 100%;\n  height: 36px;\n  margin-top: 32px;\n  display: flex;\n  flex-flow: row;\n  flex-wrap: nowrap;\n  justify-content: space-around;\n  align-items: center;\n}\n.igv-ui-dialog .igv-ui-dialog-ok div {\n  width: 98px;\n  height: 36px;\n  line-height: 36px;\n  text-align: center;\n  color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  border-color: white;\n  border-style: solid;\n  border-width: thin;\n  border-radius: 4px;\n  background-color: #2B81AF;\n}\n.igv-ui-dialog .igv-ui-dialog-ok div:hover {\n  cursor: pointer;\n  background-color: #25597f;\n}\n\n.igv-ui-panel, .igv-ui-panel-row, .igv-ui-panel-column {\n  z-index: 2048;\n  background-color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  display: flex;\n  justify-content: flex-start;\n  align-items: flex-start;\n}\n\n.igv-ui-panel-column {\n  display: flex;\n  flex-direction: column;\n}\n\n.igv-ui-panel-row {\n  display: flex;\n  flex-direction: row;\n}\n\n.igv-ui-textbox {\n  background-color: white;\n  font-family: \"Open Sans\", sans-serif;\n  font-size: medium;\n  font-weight: 400;\n  display: flex;\n  justify-content: flex-start;\n  align-items: flex-start;\n}\n\n.igv-ui-table {\n  background-color: white;\n}\n\n.igv-ui-table thead {\n  position: sticky;\n  top: 0;\n}\n\n.igv-ui-table th {\n  text-align: left;\n}\n\n.igv-ui-table td {\n  padding-right: 20px;\n}\n\n.igv-ui-table tr:hover {\n  background-color: lightblue;\n}\n\n/*# sourceMappingURL=igv-ui.css.map */\n`;\n    document.head.append(style);\n}\n\nif (typeof document !== 'undefined') {\n\n    if (!stylesheetExists(\"igv-ui.css\")) {\n        embedCSS();\n    }\n\n    function stylesheetExists(stylesheetName) {\n        for (let ss of document.styleSheets) {\n            ss = ss.href ? ss.href.replace(/^.*[\\\\\\/]/, '') : '';\n            if (ss === stylesheetName) {\n                return true\n            }\n        }\n        return false\n    }\n}\n\nexport { Alert, AlertDialog, alertSingleton as AlertSingleton, Checkbox, ColorPicker, domUtils as DOMUtils, DataRangeDialog, Dialog, GenericColorPicker, GenericContainer, IGVTable, icons$1 as Icon, InputDialog, PaletteColorTable, Panel, Popover, Textbox, uiUtils as UIUtils, appleCrayonPalette, createColorSwatchSelector, makeDraggable, nucleotideColorComponents, nucleotideColors };\n","import {DOMUtils, Icon} from \"../node_modules/igv-ui/dist/igv-ui.js\"\n\nfunction createCheckbox(name, initialState) {\n\n    const container = DOMUtils.div({class: 'igv-menu-popup-check-container'})\n\n    const div = DOMUtils.div()\n    container.appendChild(div)\n\n    const svg = Icon.createIcon('check', (true === initialState ? '#444' : 'transparent'))\n    div.appendChild(svg)\n\n    const label = DOMUtils.div()\n    label.innerText = name\n    container.appendChild(label)\n\n    return container\n}\n\nexport {createCheckbox}\n\n\n","import $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport {createCheckbox} from \"../igv-icons.js\"\n\n/**\n * Configure item list for track \"gear\" menu.\n * @param trackView\n */\nconst MenuUtils = {\n\n    trackMenuItemList: function (trackView) {\n\n        const vizWindowTypes = new Set(['alignment', 'annotation', 'variant', 'eqtl', 'snp'])\n\n        const hasVizWindow = trackView.track.config && trackView.track.config.visibilityWindow !== undefined\n\n        let menuItems = []\n\n        if (trackView.track.config.type !== 'sequence') {\n            menuItems.push(trackRenameMenuItem(trackView))\n            menuItems.push(trackHeightMenuItem(trackView))\n        }\n\n        if (this.showColorPicker(trackView.track)) {\n            menuItems.push('<hr/>')\n            menuItems.push(colorPickerMenuItem({trackView, label: \"Set track color\", option: \"color\"}))\n            menuItems.push(unsetColorMenuItem({trackView, label: \"Unset track color\"}))\n           if(trackView.track.config.type === 'wig' || trackView.track.config.type === 'annotation') {\n               menuItems.push(colorPickerMenuItem({trackView, label: \"Set alt color\", option: \"altColor\"}))\n               menuItems.push(unsetAltColorMenuItem({trackView, label: \"Unset alt color\"}))\n           }\n        }\n\n        if (trackView.track.menuItemList) {\n            menuItems = menuItems.concat(trackView.track.menuItemList())\n        }\n\n        if (hasVizWindow || vizWindowTypes.has(trackView.track.type)) {\n            menuItems.push('<hr/>')\n            menuItems.push(visibilityWindowMenuItem(trackView))\n        }\n\n        if (trackView.track.removable !== false) {\n            menuItems.push('<hr/>')\n            menuItems.push(trackRemovalMenuItem(trackView))\n        }\n\n        return menuItems\n    },\n\n    numericDataMenuItems: function (trackView) {\n\n        const menuItems = []\n\n        menuItems.push('<hr/>')\n\n        // Data range\n        const object = $('<div>')\n        object.text('Set data range')\n\n        const click = () => {\n            trackView.browser.dataRangeDialog.configure(trackView)\n            trackView.browser.dataRangeDialog.present($(trackView.browser.columnContainer))\n        }\n        menuItems.push({object, click})\n\n        if (trackView.track.logScale !== undefined) {\n            menuItems.push({\n                    object: $(createCheckbox(\"Log scale\", trackView.track.logScale)),\n                    click: () => {\n                        trackView.track.logScale = !trackView.track.logScale\n                        trackView.repaintViews()\n                    }\n                }\n            )\n        }\n\n        menuItems.push({\n                object: $(createCheckbox(\"Autoscale\", trackView.track.autoscale)),\n                click: () => {\n                    trackView.track.autoscale = !trackView.track.autoscale\n                    trackView.updateViews()\n                }\n            }\n        )\n\n\n        return menuItems\n    },\n\n    trackMenuItemListHelper: function (itemList, menuPopup) {\n\n        var list = []\n\n        if (itemList.length > 0) {\n\n            list = itemList.map(function (item, i) {\n                var $e\n\n                // name and object fields checked for backward compatibility\n                if (item.name) {\n                    $e = $('<div>')\n                    $e.text(item.name)\n                } else if (item.object) {\n                    $e = item.object\n                } else if (typeof item.label === 'string') {\n                    $e = $('<div>')\n                    $e.html(item.label)\n                } else if (typeof item === 'string') {\n\n                    if (item.startsWith(\"<\")) {\n                        $e = $(item)\n                    } else {\n                        $e = $(\"<div>\" + item + \"</div>\")\n                    }\n                }\n\n                if (0 === i) {\n                    $e.addClass('igv-track-menu-border-top')\n                }\n\n                if (item.click) {\n                    $e.on('click', handleClick)\n                    $e.on('touchend', function (e) {\n                        handleClick(e)\n                    })\n                    $e.on('mouseup', function (e) {\n                        e.preventDefault()\n                        e.stopPropagation()\n                    })\n\n                    // eslint-disable-next-line no-inner-declarations\n                    function handleClick(e) {\n                        item.click(e)\n                        menuPopup.hide()\n                        e.preventDefault()\n                        e.stopPropagation()\n                    }\n                }\n\n                return {object: $e, init: (item.init || undefined)}\n            })\n        }\n\n        return list\n    },\n\n    showColorPicker(track) {\n        return (\n            undefined === track.type ||\n            \"bedtype\" === track.type ||\n            \"alignment\" === track.type ||\n            \"annotation\" === track.type ||\n            \"variant\" === track.type ||\n            \"wig\" === track.type) ||\n            'interact' === track.type\n    },\n\n    createMenuItem(label, action) {\n        const object = $('<div>')\n        object.text(label)\n        return {object, click: action}\n    }\n}\n\n\nfunction visibilityWindowMenuItem(trackView) {\n\n    const click = e => {\n\n        const callback = () => {\n\n            let value = trackView.browser.inputDialog.value\n            value = '' === value || undefined === value ? -1 : value.trim()\n\n            trackView.track.visibilityWindow = Number.parseInt(value)\n            trackView.track.config.visibilityWindow = Number.parseInt(value)\n\n            trackView.updateViews()\n        }\n\n        const config =\n            {\n                label: 'Visibility Window',\n                value: (trackView.track.visibilityWindow),\n                callback\n            }\n        trackView.browser.inputDialog.present(config, e)\n\n    }\n\n    const object = $('<div>')\n    object.text('Set visibility window')\n    return {object, click}\n\n}\n\nfunction trackRemovalMenuItem(trackView) {\n\n    const object = $('<div>')\n    object.text('Remove track')\n\n    return {object, click: () => trackView.browser.removeTrack(trackView.track)}\n\n}\n\nfunction colorPickerMenuItem({trackView, label, option}) {\n\n    const $e = $('<div>')\n    $e.text(label)\n\n    return {\n        object: $e,\n        click: () => trackView.presentColorPicker(option)\n    }\n}\n\nfunction unsetColorMenuItem({trackView, label}) {\n\n    const $e = $('<div>')\n    $e.text(label)\n\n    return {\n        object: $e,\n        click: () => {\n            trackView.track.color = undefined\n            trackView.repaintViews()\n        }\n    }\n}\n\nfunction unsetAltColorMenuItem({trackView, label}) {\n\n    const $e = $('<div>')\n    $e.text(label)\n\n    return {\n        object: $e,\n        click: () => {\n            trackView.track.altColor = undefined\n            trackView.repaintViews()\n        }\n    }\n}\n\nfunction trackRenameMenuItem(trackView) {\n\n    const click = e => {\n\n        const callback = function () {\n            let value = trackView.browser.inputDialog.value\n            value = ('' === value || undefined === value) ? 'untitled' : value.trim()\n            trackView.track.name = value\n        }\n\n        const config =\n            {\n                label: 'Track Name',\n                value: (getTrackLabelText(trackView.track) || 'unnamed'),\n                callback\n            }\n\n        trackView.browser.inputDialog.present(config, e)\n\n    }\n\n    const object = $('<div>')\n    object.text('Set track name')\n    return {object, click}\n\n\n}\n\nfunction trackHeightMenuItem(trackView) {\n\n    const click = e => {\n\n        const callback = () => {\n\n            const number = Number(trackView.browser.inputDialog.value, 10)\n\n            if (undefined !== number) {\n\n                // If explicitly setting the height adust min or max, if neccessary.\n                if (trackView.track.minHeight !== undefined && trackView.track.minHeight > number) {\n                    trackView.track.minHeight = number\n                }\n                if (trackView.track.maxHeight !== undefined && trackView.track.maxHeight < number) {\n                    trackView.track.minHeight = number\n                }\n                trackView.setTrackHeight(number, true)\n\n                trackView.checkContentHeight()\n                trackView.repaintViews()\n\n\n                // Explicitly setting track height turns off autoHeight\n                trackView.track.autoHeight = false\n            }\n\n        }\n\n        const config =\n            {\n                label: 'Track Height',\n                value: trackView.track.height,\n                callback\n            }\n\n        trackView.browser.inputDialog.present(config, e)\n\n    }\n\n    const object = $('<div>')\n    object.text('Set track height')\n    return {object, click}\n\n\n}\n\nfunction getTrackLabelText(track) {\n    var vp,\n        txt\n\n    vp = track.trackView.viewports[0]\n    txt = vp.$trackLabel.text()\n\n    return txt\n}\n\nexport default MenuUtils\n","\nimport $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport {makeDraggable, UIUtils} from \"../../node_modules/igv-ui/dist/igv-ui.js\"\n\nclass DataRangeDialog {\n\n    constructor(browser, $parent, alert) {\n\n        this.browser = browser\n\n        // dialog container\n        this.$container = $(\"<div>\", {class: 'igv-generic-dialog-container'})\n        $parent.append(this.$container)\n        this.$container.offset({left: 0, top: 0})\n\n        // dialog header\n        const $header = $(\"<div>\", {class: 'igv-generic-dialog-header'})\n        this.$container.append($header)\n        UIUtils.attachDialogCloseHandlerWithParent($header[0], () => {\n            this.$minimum_input.val(undefined)\n            this.$maximum_input.val(undefined)\n            this.$container.offset({left: 0, top: 0})\n            this.$container.hide()\n        })\n\n\n        // minimun\n        this.$minimum = $(\"<div>\", {class: 'igv-generic-dialog-label-input'})\n        this.$container.append(this.$minimum)\n        const $mindiv = $('<div>')\n        $mindiv.text('Minimum')\n        this.$minimum.append($mindiv)\n        this.$minimum_input = $(\"<input>\")\n        this.$minimum.append(this.$minimum_input)\n\n\n        // maximum\n        this.$maximum = $(\"<div>\", {class: 'igv-generic-dialog-label-input'})\n        this.$container.append(this.$maximum)\n        const $maxdiv = $('<div>')\n        $maxdiv.text('Maximum')\n        this.$maximum.append($maxdiv)\n        this.$maximum_input = $(\"<input>\")\n        this.$maximum.append(this.$maximum_input)\n\n        // ok | cancel\n        const $buttons = $(\"<div>\", {class: 'igv-generic-dialog-ok-cancel'})\n        this.$container.append($buttons)\n\n        // ok\n        this.$ok = $(\"<div>\")\n        $buttons.append(this.$ok)\n        this.$ok.text('OK')\n\n        // cancel\n        this.$cancel = $(\"<div>\")\n        $buttons.append(this.$cancel)\n        this.$cancel.text('Cancel')\n\n        this.$cancel.on('click', () => {\n            this.$minimum_input.val(undefined)\n            this.$maximum_input.val(undefined)\n            this.$container.offset({left: 0, top: 0})\n            this.$container.hide()\n        })\n\n        //this.$container.draggable({ handle:$header.get(0) });\n        makeDraggable(this.$container.get(0), $header.get(0))\n\n        this.$container.hide()\n    }\n\n    configure(trackView) {\n\n        const dataRange = trackView.dataRange()\n        let min\n        let max\n        if (dataRange) {\n            min = dataRange.min\n            max = dataRange.max\n        } else {\n            min = 0\n            max = 100\n        }\n\n        this.$minimum_input.val(min)\n        this.$maximum_input.val(max)\n\n        this.$minimum_input.unbind()\n        this.$minimum_input.on('keyup', (e) => {\n            if (13 === e.keyCode) {\n                this.processResults(trackView)\n            }\n        })\n\n        this.$maximum_input.unbind()\n        this.$maximum_input.on('keyup', (e) => {\n            if (13 === e.keyCode) {\n                this.processResults(trackView)\n            }\n        })\n\n        this.$ok.unbind()\n        this.$ok.on('click', (e) => {\n            this.processResults(trackView)\n        })\n    }\n\n\n    processResults(trackView) {\n\n        const min = Number(this.$minimum_input.val())\n        const max = Number(this.$maximum_input.val())\n        if (isNaN(min) || isNaN(max)) {\n            this.browser.alert.present(new Error('Must input numeric values'), undefined)\n        } else {\n            trackView.setDataRange(min, max)\n        }\n\n        this.$minimum_input.val(undefined)\n        this.$maximum_input.val(undefined)\n        this.$container.offset({left: 0, top: 0})\n        this.$container.hide()\n    }\n\n    present($parent) {\n\n        const offset_top = $parent.offset().top\n        const scroll_top = $('body').scrollTop()\n\n        this.$container.offset({left: $parent.width() - this.$container.width(), top: (offset_top + scroll_top)})\n        this.$container.show()\n    }\n}\n\nexport default DataRangeDialog\n","\n/**\n * Covers string literals and String objects\n * @param x\n * @returns {boolean}\n */\nfunction isString(x) {\n    return typeof x === \"string\" || x instanceof String\n}\n\n\n// StackOverflow: http://stackoverflow.com/a/10810674/116169\nfunction numberFormatter(rawNumber) {\n\n    var dec = String(rawNumber).split(/[.,]/),\n        sep = ',',\n        decsep = '.';\n\n    return dec[0].split('').reverse().reduce(function (prev, now, i) {\n        return i % 3 === 0 ? prev + sep + now : prev + now;\n    }).split('').reverse().join('') + (dec[1] ? decsep + dec[1] : '');\n}\n\nconst numberUnFormatter = formatedNumber => formatedNumber.split(\",\").join().replace(\",\", \"\", \"g\");\n\nconst splitLines = function (string) {\n    return string.split(/\\n|\\r\\n|\\r/g);\n}\n\n\nfunction splitStringRespectingQuotes(string, delim) {\n\n    var tokens = [],\n        len = string.length,\n        i,\n        n = 0,\n        quote = false,\n        c;\n\n    if (len > 0) {\n\n        tokens[n] = string.charAt(0);\n        for (i = 1; i < len; i++) {\n            c = string.charAt(i);\n            if (c === '\"') {\n                quote = !quote;\n            } else if (!quote && c === delim) {\n                n++;\n                tokens[n] = \"\";\n            } else {\n                tokens[n] += c;\n            }\n        }\n    }\n    return tokens;\n}\n\nfunction stripQuotes(str) {\n    if(str === undefined) {\n        return str;\n    }\n    if(str.startsWith(\"'\") || str.startsWith('\"')) {\n        str = str.substring(1);\n    }\n    if (str.endsWith(\"'\") || str.endsWith('\"')) {\n        str = str.substring(0, str.length - 1);\n    }\n    return str;\n}\n\nfunction hashCode(s) {\n    return s.split(\"\").reduce(function (a, b) {\n        a = ((a << 5) - a) + b.charCodeAt(0);\n        return a & a\n    }, 0);\n}\n\nfunction capitalize(str) {\n    return str.length > 0 ? str.charAt(0).toUpperCase() + str.slice(1) : str;\n}\n\n\n/**\n * Parse a locus string and return a range object.  Locus string is of the form chr:start-end.  End is optional\n *\n */\nfunction parseLocusString(string) {\n\n    const t1 = string.split(\":\");\n    const t2 = t1[1].split(\"-\");\n\n    const range = {\n        chr: t1[0],\n        start: Number.parseInt(t2[0].replace(/,/g, '')) - 1\n    };\n\n    if (t2.length > 1) {\n        range.end = Number.parseInt(t2[1].replace(/,/g, ''));\n    } else {\n        range.end = range.start + 1;\n    }\n\n    return range;\n}\n\nexport {\n    isString, numberFormatter, numberUnFormatter, splitLines, splitStringRespectingQuotes, stripQuotes,\n    hashCode, capitalize, parseLocusString\n};","import {isString} from \"./stringUtils.js\"\n\nfunction getExtension(url) {\n\n    if (undefined === url) {\n        return undefined\n    }\n\n    let path = (isFilePath(url) || url.google_url) ? url.name : url\n    let filename = path.toLowerCase()\n\n    //Strip parameters -- handle local files later\n    let index = filename.indexOf(\"?\")\n    if (index > 0) {\n        filename = filename.substr(0, index)\n    }\n\n    //Strip aux extensions .gz, .tab, and .txt\n    if (filename.endsWith(\".gz\")) {\n        filename = filename.substr(0, filename.length - 3)\n    } else if (filename.endsWith(\".txt\") || filename.endsWith(\".tab\") || filename.endsWith(\".bgz\")) {\n        filename = filename.substr(0, filename.length - 4)\n    }\n\n    index = filename.lastIndexOf(\".\")\n\n    return index < 0 ? filename : filename.substr(1 + index)\n}\n\n/**\n * Return the filename from the path.   Example\n *   https://foo.com/bar.bed?param=2   => bar.bed\n * @param urlOrFile\n */\n\nfunction getFilename(urlOrFile) {\n\n    if (urlOrFile.name !== undefined) {\n        return urlOrFile.name\n    } else if (isString(urlOrFile)) {\n\n        let index = urlOrFile.lastIndexOf(\"/\")\n        let filename = index < 0 ? urlOrFile : urlOrFile.substr(index + 1)\n\n        //Strip parameters -- handle local files later\n        index = filename.indexOf(\"?\")\n        if (index > 0) {\n            filename = filename.substr(0, index)\n        }\n        return filename\n    } else {\n        throw Error(`Expected File or string, got ${typeof urlOrFile}`)\n    }\n}\n\n\n/**\n * Test if object is a File or File-like object.\n *\n * @param object\n */\nfunction isFile(object) {\n    if(!object) {\n        return false;\n    }\n    return typeof object !== 'function' &&\n        (object instanceof File ||\n            (object.hasOwnProperty(\"name\") && typeof object.slice === 'function' && typeof object.arrayBuffer === 'function'))\n}\n\nconst isFilePath = isFile    // deprecated\n\nfunction download(filename, data) {\n\n    const element = document.createElement('a')\n    element.setAttribute('href', data)\n    element.setAttribute('download', filename)\n    element.style.display = 'none'\n    document.body.appendChild(element)\n    element.click()\n    document.body.removeChild(element)\n}\n\nexport {getExtension, getFilename, isFilePath, isFile, download}\n","if (typeof process === 'object' && typeof window === 'undefined') {\n    global.atob = function (str) {\n        return Buffer.from(str, 'base64').toString('binary');\n    }\n}\n\n\nfunction parseUri(str) {\n\n    var o = options,\n        m = o.parser[o.strictMode ? \"strict\" : \"loose\"].exec(str),\n        uri = {},\n        i = 14;\n\n    while (i--) uri[o.key[i]] = m[i] || \"\";\n\n    uri[o.q.name] = {};\n    uri[o.key[12]].replace(o.q.parser, function ($0, $1, $2) {\n        if ($1) uri[o.q.name][$1] = $2;\n    });\n\n    return uri;\n}\n\nconst options = {\n    strictMode: false,\n    key: [\"source\", \"protocol\", \"authority\", \"userInfo\", \"user\", \"password\", \"host\", \"port\", \"relative\", \"path\", \"directory\", \"file\", \"query\", \"anchor\"],\n    q: {\n        name: \"queryKey\",\n        parser: /(?:^|&)([^&=]*)=?([^&]*)/g\n    },\n    parser: {\n        strict: /^(?:([^:\\/?#]+):)?(?:\\/\\/((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\\/?#]*)(?::(\\d*))?))?((((?:[^?#\\/]*\\/)*)([^?#]*))(?:\\?([^#]*))?(?:#(.*))?)/,\n        loose: /^(?:(?![^:@]+:[^:@\\/]*@)([^:\\/?#.]+):)?(?:\\/\\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\\/?#]*)(?::(\\d*))?)(((\\/(?:[^?#](?![^?#\\/]*\\.[^?#\\/.]+(?:[?#]|$)))*\\/?)?([^?#\\/]*))(?:\\?([^#]*))?(?:#(.*))?)/\n    }\n};\n\nfunction addExtension(url, extension) {\n\n    const idx = url.indexOf(\"?\");\n    if (idx < 0) {\n        return url + extension;\n    } else {\n        return url.substring(0, idx) + extension + url.substring(idx);\n    }\n}\n\n/**\n * Resolve a url, which might be a string, function (that returns a string or Promse), or Promise (that resolves to a string)\n *\n * @param url\n * @returns {Promise<*>}\n */\nasync function resolveURL(url) {\n    return (typeof url === 'function')  ?  url() :  url;\n}\n\nexport {parseUri, addExtension, resolveURL};\n\n","\n/*! pako 2.1.0 https://github.com/nodeca/pako @license (MIT AND Zlib) */\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\n/* eslint-disable space-unary-ops */\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\n\n//const Z_FILTERED          = 1;\n//const Z_HUFFMAN_ONLY      = 2;\n//const Z_RLE               = 3;\nconst Z_FIXED$1               = 4;\n//const Z_DEFAULT_STRATEGY  = 0;\n\n/* Possible values of the data_type field (though see inflate()) */\nconst Z_BINARY              = 0;\nconst Z_TEXT                = 1;\n//const Z_ASCII             = 1; // = Z_TEXT\nconst Z_UNKNOWN$1             = 2;\n\n/*============================================================================*/\n\n\nfunction zero$1(buf) { let len = buf.length; while (--len >= 0) { buf[len] = 0; } }\n\n// From zutil.h\n\nconst STORED_BLOCK = 0;\nconst STATIC_TREES = 1;\nconst DYN_TREES    = 2;\n/* The three kinds of block type */\n\nconst MIN_MATCH$1    = 3;\nconst MAX_MATCH$1    = 258;\n/* The minimum and maximum match lengths */\n\n// From deflate.h\n/* ===========================================================================\n * Internal compression state.\n */\n\nconst LENGTH_CODES$1  = 29;\n/* number of length codes, not counting the special END_BLOCK code */\n\nconst LITERALS$1      = 256;\n/* number of literal bytes 0..255 */\n\nconst L_CODES$1       = LITERALS$1 + 1 + LENGTH_CODES$1;\n/* number of Literal or Length codes, including the END_BLOCK code */\n\nconst D_CODES$1       = 30;\n/* number of distance codes */\n\nconst BL_CODES$1      = 19;\n/* number of codes used to transfer the bit lengths */\n\nconst HEAP_SIZE$1     = 2 * L_CODES$1 + 1;\n/* maximum heap size */\n\nconst MAX_BITS$1      = 15;\n/* All codes must not exceed MAX_BITS bits */\n\nconst Buf_size      = 16;\n/* size of bit buffer in bi_buf */\n\n\n/* ===========================================================================\n * Constants\n */\n\nconst MAX_BL_BITS = 7;\n/* Bit length codes must not exceed MAX_BL_BITS bits */\n\nconst END_BLOCK   = 256;\n/* end of block literal code */\n\nconst REP_3_6     = 16;\n/* repeat previous bit length 3-6 times (2 bits of repeat count) */\n\nconst REPZ_3_10   = 17;\n/* repeat a zero length 3-10 times  (3 bits of repeat count) */\n\nconst REPZ_11_138 = 18;\n/* repeat a zero length 11-138 times  (7 bits of repeat count) */\n\n/* eslint-disable comma-spacing,array-bracket-spacing */\nconst extra_lbits =   /* extra bits for each length code */\n  new Uint8Array([0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0]);\n\nconst extra_dbits =   /* extra bits for each distance code */\n  new Uint8Array([0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13]);\n\nconst extra_blbits =  /* extra bits for each bit length code */\n  new Uint8Array([0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7]);\n\nconst bl_order =\n  new Uint8Array([16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15]);\n/* eslint-enable comma-spacing,array-bracket-spacing */\n\n/* The lengths of the bit length codes are sent in order of decreasing\n * probability, to avoid transmitting the lengths for unused bit length codes.\n */\n\n/* ===========================================================================\n * Local data. These are initialized only once.\n */\n\n// We pre-fill arrays with 0 to avoid uninitialized gaps\n\nconst DIST_CODE_LEN = 512; /* see definition of array dist_code below */\n\n// !!!! Use flat array instead of structure, Freq = i*2, Len = i*2+1\nconst static_ltree  = new Array((L_CODES$1 + 2) * 2);\nzero$1(static_ltree);\n/* The static literal tree. Since the bit lengths are imposed, there is no\n * need for the L_CODES extra codes used during heap construction. However\n * The codes 286 and 287 are needed to build a canonical tree (see _tr_init\n * below).\n */\n\nconst static_dtree  = new Array(D_CODES$1 * 2);\nzero$1(static_dtree);\n/* The static distance tree. (Actually a trivial tree since all codes use\n * 5 bits.)\n */\n\nconst _dist_code    = new Array(DIST_CODE_LEN);\nzero$1(_dist_code);\n/* Distance codes. The first 256 values correspond to the distances\n * 3 .. 258, the last 256 values correspond to the top 8 bits of\n * the 15 bit distances.\n */\n\nconst _length_code  = new Array(MAX_MATCH$1 - MIN_MATCH$1 + 1);\nzero$1(_length_code);\n/* length code for each normalized match length (0 == MIN_MATCH) */\n\nconst base_length   = new Array(LENGTH_CODES$1);\nzero$1(base_length);\n/* First normalized length for each code (0 = MIN_MATCH) */\n\nconst base_dist     = new Array(D_CODES$1);\nzero$1(base_dist);\n/* First normalized distance for each code (0 = distance of 1) */\n\n\nfunction StaticTreeDesc(static_tree, extra_bits, extra_base, elems, max_length) {\n\n  this.static_tree  = static_tree;  /* static tree or NULL */\n  this.extra_bits   = extra_bits;   /* extra bits for each code or NULL */\n  this.extra_base   = extra_base;   /* base index for extra_bits */\n  this.elems        = elems;        /* max number of elements in the tree */\n  this.max_length   = max_length;   /* max bit length for the codes */\n\n  // show if `static_tree` has data or dummy - needed for monomorphic objects\n  this.has_stree    = static_tree && static_tree.length;\n}\n\n\nlet static_l_desc;\nlet static_d_desc;\nlet static_bl_desc;\n\n\nfunction TreeDesc(dyn_tree, stat_desc) {\n  this.dyn_tree = dyn_tree;     /* the dynamic tree */\n  this.max_code = 0;            /* largest code with non zero frequency */\n  this.stat_desc = stat_desc;   /* the corresponding static tree */\n}\n\n\n\nconst d_code = (dist) => {\n\n  return dist < 256 ? _dist_code[dist] : _dist_code[256 + (dist >>> 7)];\n};\n\n\n/* ===========================================================================\n * Output a short LSB first on the stream.\n * IN assertion: there is enough room in pendingBuf.\n */\nconst put_short = (s, w) => {\n//    put_byte(s, (uch)((w) & 0xff));\n//    put_byte(s, (uch)((ush)(w) >> 8));\n  s.pending_buf[s.pending++] = (w) & 0xff;\n  s.pending_buf[s.pending++] = (w >>> 8) & 0xff;\n};\n\n\n/* ===========================================================================\n * Send a value on a given number of bits.\n * IN assertion: length <= 16 and value fits in length bits.\n */\nconst send_bits = (s, value, length) => {\n\n  if (s.bi_valid > (Buf_size - length)) {\n    s.bi_buf |= (value << s.bi_valid) & 0xffff;\n    put_short(s, s.bi_buf);\n    s.bi_buf = value >> (Buf_size - s.bi_valid);\n    s.bi_valid += length - Buf_size;\n  } else {\n    s.bi_buf |= (value << s.bi_valid) & 0xffff;\n    s.bi_valid += length;\n  }\n};\n\n\nconst send_code = (s, c, tree) => {\n\n  send_bits(s, tree[c * 2]/*.Code*/, tree[c * 2 + 1]/*.Len*/);\n};\n\n\n/* ===========================================================================\n * Reverse the first len bits of a code, using straightforward code (a faster\n * method would use a table)\n * IN assertion: 1 <= len <= 15\n */\nconst bi_reverse = (code, len) => {\n\n  let res = 0;\n  do {\n    res |= code & 1;\n    code >>>= 1;\n    res <<= 1;\n  } while (--len > 0);\n  return res >>> 1;\n};\n\n\n/* ===========================================================================\n * Flush the bit buffer, keeping at most 7 bits in it.\n */\nconst bi_flush = (s) => {\n\n  if (s.bi_valid === 16) {\n    put_short(s, s.bi_buf);\n    s.bi_buf = 0;\n    s.bi_valid = 0;\n\n  } else if (s.bi_valid >= 8) {\n    s.pending_buf[s.pending++] = s.bi_buf & 0xff;\n    s.bi_buf >>= 8;\n    s.bi_valid -= 8;\n  }\n};\n\n\n/* ===========================================================================\n * Compute the optimal bit lengths for a tree and update the total bit length\n * for the current block.\n * IN assertion: the fields freq and dad are set, heap[heap_max] and\n *    above are the tree nodes sorted by increasing frequency.\n * OUT assertions: the field len is set to the optimal bit length, the\n *     array bl_count contains the frequencies for each bit length.\n *     The length opt_len is updated; static_len is also updated if stree is\n *     not null.\n */\nconst gen_bitlen = (s, desc) => {\n//    deflate_state *s;\n//    tree_desc *desc;    /* the tree descriptor */\n\n  const tree            = desc.dyn_tree;\n  const max_code        = desc.max_code;\n  const stree           = desc.stat_desc.static_tree;\n  const has_stree       = desc.stat_desc.has_stree;\n  const extra           = desc.stat_desc.extra_bits;\n  const base            = desc.stat_desc.extra_base;\n  const max_length      = desc.stat_desc.max_length;\n  let h;              /* heap index */\n  let n, m;           /* iterate over the tree elements */\n  let bits;           /* bit length */\n  let xbits;          /* extra bits */\n  let f;              /* frequency */\n  let overflow = 0;   /* number of elements with bit length too large */\n\n  for (bits = 0; bits <= MAX_BITS$1; bits++) {\n    s.bl_count[bits] = 0;\n  }\n\n  /* In a first pass, compute the optimal bit lengths (which may\n   * overflow in the case of the bit length tree).\n   */\n  tree[s.heap[s.heap_max] * 2 + 1]/*.Len*/ = 0; /* root of the heap */\n\n  for (h = s.heap_max + 1; h < HEAP_SIZE$1; h++) {\n    n = s.heap[h];\n    bits = tree[tree[n * 2 + 1]/*.Dad*/ * 2 + 1]/*.Len*/ + 1;\n    if (bits > max_length) {\n      bits = max_length;\n      overflow++;\n    }\n    tree[n * 2 + 1]/*.Len*/ = bits;\n    /* We overwrite tree[n].Dad which is no longer needed */\n\n    if (n > max_code) { continue; } /* not a leaf node */\n\n    s.bl_count[bits]++;\n    xbits = 0;\n    if (n >= base) {\n      xbits = extra[n - base];\n    }\n    f = tree[n * 2]/*.Freq*/;\n    s.opt_len += f * (bits + xbits);\n    if (has_stree) {\n      s.static_len += f * (stree[n * 2 + 1]/*.Len*/ + xbits);\n    }\n  }\n  if (overflow === 0) { return; }\n\n  // Tracev((stderr,\"\\nbit length overflow\\n\"));\n  /* This happens for example on obj2 and pic of the Calgary corpus */\n\n  /* Find the first bit length which could increase: */\n  do {\n    bits = max_length - 1;\n    while (s.bl_count[bits] === 0) { bits--; }\n    s.bl_count[bits]--;      /* move one leaf down the tree */\n    s.bl_count[bits + 1] += 2; /* move one overflow item as its brother */\n    s.bl_count[max_length]--;\n    /* The brother of the overflow item also moves one step up,\n     * but this does not affect bl_count[max_length]\n     */\n    overflow -= 2;\n  } while (overflow > 0);\n\n  /* Now recompute all bit lengths, scanning in increasing frequency.\n   * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all\n   * lengths instead of fixing only the wrong ones. This idea is taken\n   * from 'ar' written by Haruhiko Okumura.)\n   */\n  for (bits = max_length; bits !== 0; bits--) {\n    n = s.bl_count[bits];\n    while (n !== 0) {\n      m = s.heap[--h];\n      if (m > max_code) { continue; }\n      if (tree[m * 2 + 1]/*.Len*/ !== bits) {\n        // Tracev((stderr,\"code %d bits %d->%d\\n\", m, tree[m].Len, bits));\n        s.opt_len += (bits - tree[m * 2 + 1]/*.Len*/) * tree[m * 2]/*.Freq*/;\n        tree[m * 2 + 1]/*.Len*/ = bits;\n      }\n      n--;\n    }\n  }\n};\n\n\n/* ===========================================================================\n * Generate the codes for a given tree and bit counts (which need not be\n * optimal).\n * IN assertion: the array bl_count contains the bit length statistics for\n * the given tree and the field len is set for all tree elements.\n * OUT assertion: the field code is set for all tree elements of non\n *     zero code length.\n */\nconst gen_codes = (tree, max_code, bl_count) => {\n//    ct_data *tree;             /* the tree to decorate */\n//    int max_code;              /* largest code with non zero frequency */\n//    ushf *bl_count;            /* number of codes at each bit length */\n\n  const next_code = new Array(MAX_BITS$1 + 1); /* next code value for each bit length */\n  let code = 0;              /* running code value */\n  let bits;                  /* bit index */\n  let n;                     /* code index */\n\n  /* The distribution counts are first used to generate the code values\n   * without bit reversal.\n   */\n  for (bits = 1; bits <= MAX_BITS$1; bits++) {\n    code = (code + bl_count[bits - 1]) << 1;\n    next_code[bits] = code;\n  }\n  /* Check that the bit counts in bl_count are consistent. The last code\n   * must be all ones.\n   */\n  //Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,\n  //        \"inconsistent bit counts\");\n  //Tracev((stderr,\"\\ngen_codes: max_code %d \", max_code));\n\n  for (n = 0;  n <= max_code; n++) {\n    let len = tree[n * 2 + 1]/*.Len*/;\n    if (len === 0) { continue; }\n    /* Now reverse the bits */\n    tree[n * 2]/*.Code*/ = bi_reverse(next_code[len]++, len);\n\n    //Tracecv(tree != static_ltree, (stderr,\"\\nn %3d %c l %2d c %4x (%x) \",\n    //     n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));\n  }\n};\n\n\n/* ===========================================================================\n * Initialize the various 'constant' tables.\n */\nconst tr_static_init = () => {\n\n  let n;        /* iterates over tree elements */\n  let bits;     /* bit counter */\n  let length;   /* length value */\n  let code;     /* code value */\n  let dist;     /* distance index */\n  const bl_count = new Array(MAX_BITS$1 + 1);\n  /* number of codes at each bit length for an optimal tree */\n\n  // do check in _tr_init()\n  //if (static_init_done) return;\n\n  /* For some embedded targets, global variables are not initialized: */\n/*#ifdef NO_INIT_GLOBAL_POINTERS\n  static_l_desc.static_tree = static_ltree;\n  static_l_desc.extra_bits = extra_lbits;\n  static_d_desc.static_tree = static_dtree;\n  static_d_desc.extra_bits = extra_dbits;\n  static_bl_desc.extra_bits = extra_blbits;\n#endif*/\n\n  /* Initialize the mapping length (0..255) -> length code (0..28) */\n  length = 0;\n  for (code = 0; code < LENGTH_CODES$1 - 1; code++) {\n    base_length[code] = length;\n    for (n = 0; n < (1 << extra_lbits[code]); n++) {\n      _length_code[length++] = code;\n    }\n  }\n  //Assert (length == 256, \"tr_static_init: length != 256\");\n  /* Note that the length 255 (match length 258) can be represented\n   * in two different ways: code 284 + 5 bits or code 285, so we\n   * overwrite length_code[255] to use the best encoding:\n   */\n  _length_code[length - 1] = code;\n\n  /* Initialize the mapping dist (0..32K) -> dist code (0..29) */\n  dist = 0;\n  for (code = 0; code < 16; code++) {\n    base_dist[code] = dist;\n    for (n = 0; n < (1 << extra_dbits[code]); n++) {\n      _dist_code[dist++] = code;\n    }\n  }\n  //Assert (dist == 256, \"tr_static_init: dist != 256\");\n  dist >>= 7; /* from now on, all distances are divided by 128 */\n  for (; code < D_CODES$1; code++) {\n    base_dist[code] = dist << 7;\n    for (n = 0; n < (1 << (extra_dbits[code] - 7)); n++) {\n      _dist_code[256 + dist++] = code;\n    }\n  }\n  //Assert (dist == 256, \"tr_static_init: 256+dist != 512\");\n\n  /* Construct the codes of the static literal tree */\n  for (bits = 0; bits <= MAX_BITS$1; bits++) {\n    bl_count[bits] = 0;\n  }\n\n  n = 0;\n  while (n <= 143) {\n    static_ltree[n * 2 + 1]/*.Len*/ = 8;\n    n++;\n    bl_count[8]++;\n  }\n  while (n <= 255) {\n    static_ltree[n * 2 + 1]/*.Len*/ = 9;\n    n++;\n    bl_count[9]++;\n  }\n  while (n <= 279) {\n    static_ltree[n * 2 + 1]/*.Len*/ = 7;\n    n++;\n    bl_count[7]++;\n  }\n  while (n <= 287) {\n    static_ltree[n * 2 + 1]/*.Len*/ = 8;\n    n++;\n    bl_count[8]++;\n  }\n  /* Codes 286 and 287 do not exist, but we must include them in the\n   * tree construction to get a canonical Huffman tree (longest code\n   * all ones)\n   */\n  gen_codes(static_ltree, L_CODES$1 + 1, bl_count);\n\n  /* The static distance tree is trivial: */\n  for (n = 0; n < D_CODES$1; n++) {\n    static_dtree[n * 2 + 1]/*.Len*/ = 5;\n    static_dtree[n * 2]/*.Code*/ = bi_reverse(n, 5);\n  }\n\n  // Now data ready and we can init static trees\n  static_l_desc = new StaticTreeDesc(static_ltree, extra_lbits, LITERALS$1 + 1, L_CODES$1, MAX_BITS$1);\n  static_d_desc = new StaticTreeDesc(static_dtree, extra_dbits, 0,          D_CODES$1, MAX_BITS$1);\n  static_bl_desc = new StaticTreeDesc(new Array(0), extra_blbits, 0,         BL_CODES$1, MAX_BL_BITS);\n\n  //static_init_done = true;\n};\n\n\n/* ===========================================================================\n * Initialize a new block.\n */\nconst init_block = (s) => {\n\n  let n; /* iterates over tree elements */\n\n  /* Initialize the trees. */\n  for (n = 0; n < L_CODES$1;  n++) { s.dyn_ltree[n * 2]/*.Freq*/ = 0; }\n  for (n = 0; n < D_CODES$1;  n++) { s.dyn_dtree[n * 2]/*.Freq*/ = 0; }\n  for (n = 0; n < BL_CODES$1; n++) { s.bl_tree[n * 2]/*.Freq*/ = 0; }\n\n  s.dyn_ltree[END_BLOCK * 2]/*.Freq*/ = 1;\n  s.opt_len = s.static_len = 0;\n  s.sym_next = s.matches = 0;\n};\n\n\n/* ===========================================================================\n * Flush the bit buffer and align the output on a byte boundary\n */\nconst bi_windup = (s) =>\n{\n  if (s.bi_valid > 8) {\n    put_short(s, s.bi_buf);\n  } else if (s.bi_valid > 0) {\n    //put_byte(s, (Byte)s->bi_buf);\n    s.pending_buf[s.pending++] = s.bi_buf;\n  }\n  s.bi_buf = 0;\n  s.bi_valid = 0;\n};\n\n/* ===========================================================================\n * Compares to subtrees, using the tree depth as tie breaker when\n * the subtrees have equal frequency. This minimizes the worst case length.\n */\nconst smaller = (tree, n, m, depth) => {\n\n  const _n2 = n * 2;\n  const _m2 = m * 2;\n  return (tree[_n2]/*.Freq*/ < tree[_m2]/*.Freq*/ ||\n         (tree[_n2]/*.Freq*/ === tree[_m2]/*.Freq*/ && depth[n] <= depth[m]));\n};\n\n/* ===========================================================================\n * Restore the heap property by moving down the tree starting at node k,\n * exchanging a node with the smallest of its two sons if necessary, stopping\n * when the heap property is re-established (each father smaller than its\n * two sons).\n */\nconst pqdownheap = (s, tree, k) => {\n//    deflate_state *s;\n//    ct_data *tree;  /* the tree to restore */\n//    int k;               /* node to move down */\n\n  const v = s.heap[k];\n  let j = k << 1;  /* left son of k */\n  while (j <= s.heap_len) {\n    /* Set j to the smallest of the two sons: */\n    if (j < s.heap_len &&\n      smaller(tree, s.heap[j + 1], s.heap[j], s.depth)) {\n      j++;\n    }\n    /* Exit if v is smaller than both sons */\n    if (smaller(tree, v, s.heap[j], s.depth)) { break; }\n\n    /* Exchange v with the smallest son */\n    s.heap[k] = s.heap[j];\n    k = j;\n\n    /* And continue down the tree, setting j to the left son of k */\n    j <<= 1;\n  }\n  s.heap[k] = v;\n};\n\n\n// inlined manually\n// const SMALLEST = 1;\n\n/* ===========================================================================\n * Send the block data compressed using the given Huffman trees\n */\nconst compress_block = (s, ltree, dtree) => {\n//    deflate_state *s;\n//    const ct_data *ltree; /* literal tree */\n//    const ct_data *dtree; /* distance tree */\n\n  let dist;           /* distance of matched string */\n  let lc;             /* match length or unmatched char (if dist == 0) */\n  let sx = 0;         /* running index in sym_buf */\n  let code;           /* the code to send */\n  let extra;          /* number of extra bits to send */\n\n  if (s.sym_next !== 0) {\n    do {\n      dist = s.pending_buf[s.sym_buf + sx++] & 0xff;\n      dist += (s.pending_buf[s.sym_buf + sx++] & 0xff) << 8;\n      lc = s.pending_buf[s.sym_buf + sx++];\n      if (dist === 0) {\n        send_code(s, lc, ltree); /* send a literal byte */\n        //Tracecv(isgraph(lc), (stderr,\" '%c' \", lc));\n      } else {\n        /* Here, lc is the match length - MIN_MATCH */\n        code = _length_code[lc];\n        send_code(s, code + LITERALS$1 + 1, ltree); /* send the length code */\n        extra = extra_lbits[code];\n        if (extra !== 0) {\n          lc -= base_length[code];\n          send_bits(s, lc, extra);       /* send the extra length bits */\n        }\n        dist--; /* dist is now the match distance - 1 */\n        code = d_code(dist);\n        //Assert (code < D_CODES, \"bad d_code\");\n\n        send_code(s, code, dtree);       /* send the distance code */\n        extra = extra_dbits[code];\n        if (extra !== 0) {\n          dist -= base_dist[code];\n          send_bits(s, dist, extra);   /* send the extra distance bits */\n        }\n      } /* literal or match pair ? */\n\n      /* Check that the overlay between pending_buf and sym_buf is ok: */\n      //Assert(s->pending < s->lit_bufsize + sx, \"pendingBuf overflow\");\n\n    } while (sx < s.sym_next);\n  }\n\n  send_code(s, END_BLOCK, ltree);\n};\n\n\n/* ===========================================================================\n * Construct one Huffman tree and assigns the code bit strings and lengths.\n * Update the total bit length for the current block.\n * IN assertion: the field freq is set for all tree elements.\n * OUT assertions: the fields len and code are set to the optimal bit length\n *     and corresponding code. The length opt_len is updated; static_len is\n *     also updated if stree is not null. The field max_code is set.\n */\nconst build_tree = (s, desc) => {\n//    deflate_state *s;\n//    tree_desc *desc; /* the tree descriptor */\n\n  const tree     = desc.dyn_tree;\n  const stree    = desc.stat_desc.static_tree;\n  const has_stree = desc.stat_desc.has_stree;\n  const elems    = desc.stat_desc.elems;\n  let n, m;          /* iterate over heap elements */\n  let max_code = -1; /* largest code with non zero frequency */\n  let node;          /* new node being created */\n\n  /* Construct the initial heap, with least frequent element in\n   * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].\n   * heap[0] is not used.\n   */\n  s.heap_len = 0;\n  s.heap_max = HEAP_SIZE$1;\n\n  for (n = 0; n < elems; n++) {\n    if (tree[n * 2]/*.Freq*/ !== 0) {\n      s.heap[++s.heap_len] = max_code = n;\n      s.depth[n] = 0;\n\n    } else {\n      tree[n * 2 + 1]/*.Len*/ = 0;\n    }\n  }\n\n  /* The pkzip format requires that at least one distance code exists,\n   * and that at least one bit should be sent even if there is only one\n   * possible code. So to avoid special checks later on we force at least\n   * two codes of non zero frequency.\n   */\n  while (s.heap_len < 2) {\n    node = s.heap[++s.heap_len] = (max_code < 2 ? ++max_code : 0);\n    tree[node * 2]/*.Freq*/ = 1;\n    s.depth[node] = 0;\n    s.opt_len--;\n\n    if (has_stree) {\n      s.static_len -= stree[node * 2 + 1]/*.Len*/;\n    }\n    /* node is 0 or 1 so it does not have extra bits */\n  }\n  desc.max_code = max_code;\n\n  /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,\n   * establish sub-heaps of increasing lengths:\n   */\n  for (n = (s.heap_len >> 1/*int /2*/); n >= 1; n--) { pqdownheap(s, tree, n); }\n\n  /* Construct the Huffman tree by repeatedly combining the least two\n   * frequent nodes.\n   */\n  node = elems;              /* next internal node of the tree */\n  do {\n    //pqremove(s, tree, n);  /* n = node of least frequency */\n    /*** pqremove ***/\n    n = s.heap[1/*SMALLEST*/];\n    s.heap[1/*SMALLEST*/] = s.heap[s.heap_len--];\n    pqdownheap(s, tree, 1/*SMALLEST*/);\n    /***/\n\n    m = s.heap[1/*SMALLEST*/]; /* m = node of next least frequency */\n\n    s.heap[--s.heap_max] = n; /* keep the nodes sorted by frequency */\n    s.heap[--s.heap_max] = m;\n\n    /* Create a new node father of n and m */\n    tree[node * 2]/*.Freq*/ = tree[n * 2]/*.Freq*/ + tree[m * 2]/*.Freq*/;\n    s.depth[node] = (s.depth[n] >= s.depth[m] ? s.depth[n] : s.depth[m]) + 1;\n    tree[n * 2 + 1]/*.Dad*/ = tree[m * 2 + 1]/*.Dad*/ = node;\n\n    /* and insert the new node in the heap */\n    s.heap[1/*SMALLEST*/] = node++;\n    pqdownheap(s, tree, 1/*SMALLEST*/);\n\n  } while (s.heap_len >= 2);\n\n  s.heap[--s.heap_max] = s.heap[1/*SMALLEST*/];\n\n  /* At this point, the fields freq and dad are set. We can now\n   * generate the bit lengths.\n   */\n  gen_bitlen(s, desc);\n\n  /* The field len is now set, we can generate the bit codes */\n  gen_codes(tree, max_code, s.bl_count);\n};\n\n\n/* ===========================================================================\n * Scan a literal or distance tree to determine the frequencies of the codes\n * in the bit length tree.\n */\nconst scan_tree = (s, tree, max_code) => {\n//    deflate_state *s;\n//    ct_data *tree;   /* the tree to be scanned */\n//    int max_code;    /* and its largest code of non zero frequency */\n\n  let n;                     /* iterates over all tree elements */\n  let prevlen = -1;          /* last emitted length */\n  let curlen;                /* length of current code */\n\n  let nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */\n\n  let count = 0;             /* repeat count of the current code */\n  let max_count = 7;         /* max repeat count */\n  let min_count = 4;         /* min repeat count */\n\n  if (nextlen === 0) {\n    max_count = 138;\n    min_count = 3;\n  }\n  tree[(max_code + 1) * 2 + 1]/*.Len*/ = 0xffff; /* guard */\n\n  for (n = 0; n <= max_code; n++) {\n    curlen = nextlen;\n    nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;\n\n    if (++count < max_count && curlen === nextlen) {\n      continue;\n\n    } else if (count < min_count) {\n      s.bl_tree[curlen * 2]/*.Freq*/ += count;\n\n    } else if (curlen !== 0) {\n\n      if (curlen !== prevlen) { s.bl_tree[curlen * 2]/*.Freq*/++; }\n      s.bl_tree[REP_3_6 * 2]/*.Freq*/++;\n\n    } else if (count <= 10) {\n      s.bl_tree[REPZ_3_10 * 2]/*.Freq*/++;\n\n    } else {\n      s.bl_tree[REPZ_11_138 * 2]/*.Freq*/++;\n    }\n\n    count = 0;\n    prevlen = curlen;\n\n    if (nextlen === 0) {\n      max_count = 138;\n      min_count = 3;\n\n    } else if (curlen === nextlen) {\n      max_count = 6;\n      min_count = 3;\n\n    } else {\n      max_count = 7;\n      min_count = 4;\n    }\n  }\n};\n\n\n/* ===========================================================================\n * Send a literal or distance tree in compressed form, using the codes in\n * bl_tree.\n */\nconst send_tree = (s, tree, max_code) => {\n//    deflate_state *s;\n//    ct_data *tree; /* the tree to be scanned */\n//    int max_code;       /* and its largest code of non zero frequency */\n\n  let n;                     /* iterates over all tree elements */\n  let prevlen = -1;          /* last emitted length */\n  let curlen;                /* length of current code */\n\n  let nextlen = tree[0 * 2 + 1]/*.Len*/; /* length of next code */\n\n  let count = 0;             /* repeat count of the current code */\n  let max_count = 7;         /* max repeat count */\n  let min_count = 4;         /* min repeat count */\n\n  /* tree[max_code+1].Len = -1; */  /* guard already set */\n  if (nextlen === 0) {\n    max_count = 138;\n    min_count = 3;\n  }\n\n  for (n = 0; n <= max_code; n++) {\n    curlen = nextlen;\n    nextlen = tree[(n + 1) * 2 + 1]/*.Len*/;\n\n    if (++count < max_count && curlen === nextlen) {\n      continue;\n\n    } else if (count < min_count) {\n      do { send_code(s, curlen, s.bl_tree); } while (--count !== 0);\n\n    } else if (curlen !== 0) {\n      if (curlen !== prevlen) {\n        send_code(s, curlen, s.bl_tree);\n        count--;\n      }\n      //Assert(count >= 3 && count <= 6, \" 3_6?\");\n      send_code(s, REP_3_6, s.bl_tree);\n      send_bits(s, count - 3, 2);\n\n    } else if (count <= 10) {\n      send_code(s, REPZ_3_10, s.bl_tree);\n      send_bits(s, count - 3, 3);\n\n    } else {\n      send_code(s, REPZ_11_138, s.bl_tree);\n      send_bits(s, count - 11, 7);\n    }\n\n    count = 0;\n    prevlen = curlen;\n    if (nextlen === 0) {\n      max_count = 138;\n      min_count = 3;\n\n    } else if (curlen === nextlen) {\n      max_count = 6;\n      min_count = 3;\n\n    } else {\n      max_count = 7;\n      min_count = 4;\n    }\n  }\n};\n\n\n/* ===========================================================================\n * Construct the Huffman tree for the bit lengths and return the index in\n * bl_order of the last bit length code to send.\n */\nconst build_bl_tree = (s) => {\n\n  let max_blindex;  /* index of last bit length code of non zero freq */\n\n  /* Determine the bit length frequencies for literal and distance trees */\n  scan_tree(s, s.dyn_ltree, s.l_desc.max_code);\n  scan_tree(s, s.dyn_dtree, s.d_desc.max_code);\n\n  /* Build the bit length tree: */\n  build_tree(s, s.bl_desc);\n  /* opt_len now includes the length of the tree representations, except\n   * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.\n   */\n\n  /* Determine the number of bit length codes to send. The pkzip format\n   * requires that at least 4 bit length codes be sent. (appnote.txt says\n   * 3 but the actual value used is 4.)\n   */\n  for (max_blindex = BL_CODES$1 - 1; max_blindex >= 3; max_blindex--) {\n    if (s.bl_tree[bl_order[max_blindex] * 2 + 1]/*.Len*/ !== 0) {\n      break;\n    }\n  }\n  /* Update opt_len to include the bit length tree and counts */\n  s.opt_len += 3 * (max_blindex + 1) + 5 + 5 + 4;\n  //Tracev((stderr, \"\\ndyn trees: dyn %ld, stat %ld\",\n  //        s->opt_len, s->static_len));\n\n  return max_blindex;\n};\n\n\n/* ===========================================================================\n * Send the header for a block using dynamic Huffman trees: the counts, the\n * lengths of the bit length codes, the literal tree and the distance tree.\n * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.\n */\nconst send_all_trees = (s, lcodes, dcodes, blcodes) => {\n//    deflate_state *s;\n//    int lcodes, dcodes, blcodes; /* number of codes for each tree */\n\n  let rank;                    /* index in bl_order */\n\n  //Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, \"not enough codes\");\n  //Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,\n  //        \"too many codes\");\n  //Tracev((stderr, \"\\nbl counts: \"));\n  send_bits(s, lcodes - 257, 5); /* not +255 as stated in appnote.txt */\n  send_bits(s, dcodes - 1,   5);\n  send_bits(s, blcodes - 4,  4); /* not -3 as stated in appnote.txt */\n  for (rank = 0; rank < blcodes; rank++) {\n    //Tracev((stderr, \"\\nbl code %2d \", bl_order[rank]));\n    send_bits(s, s.bl_tree[bl_order[rank] * 2 + 1]/*.Len*/, 3);\n  }\n  //Tracev((stderr, \"\\nbl tree: sent %ld\", s->bits_sent));\n\n  send_tree(s, s.dyn_ltree, lcodes - 1); /* literal tree */\n  //Tracev((stderr, \"\\nlit tree: sent %ld\", s->bits_sent));\n\n  send_tree(s, s.dyn_dtree, dcodes - 1); /* distance tree */\n  //Tracev((stderr, \"\\ndist tree: sent %ld\", s->bits_sent));\n};\n\n\n/* ===========================================================================\n * Check if the data type is TEXT or BINARY, using the following algorithm:\n * - TEXT if the two conditions below are satisfied:\n *    a) There are no non-portable control characters belonging to the\n *       \"block list\" (0..6, 14..25, 28..31).\n *    b) There is at least one printable character belonging to the\n *       \"allow list\" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).\n * - BINARY otherwise.\n * - The following partially-portable control characters form a\n *   \"gray list\" that is ignored in this detection algorithm:\n *   (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).\n * IN assertion: the fields Freq of dyn_ltree are set.\n */\nconst detect_data_type = (s) => {\n  /* block_mask is the bit mask of block-listed bytes\n   * set bits 0..6, 14..25, and 28..31\n   * 0xf3ffc07f = binary 11110011111111111100000001111111\n   */\n  let block_mask = 0xf3ffc07f;\n  let n;\n\n  /* Check for non-textual (\"block-listed\") bytes. */\n  for (n = 0; n <= 31; n++, block_mask >>>= 1) {\n    if ((block_mask & 1) && (s.dyn_ltree[n * 2]/*.Freq*/ !== 0)) {\n      return Z_BINARY;\n    }\n  }\n\n  /* Check for textual (\"allow-listed\") bytes. */\n  if (s.dyn_ltree[9 * 2]/*.Freq*/ !== 0 || s.dyn_ltree[10 * 2]/*.Freq*/ !== 0 ||\n      s.dyn_ltree[13 * 2]/*.Freq*/ !== 0) {\n    return Z_TEXT;\n  }\n  for (n = 32; n < LITERALS$1; n++) {\n    if (s.dyn_ltree[n * 2]/*.Freq*/ !== 0) {\n      return Z_TEXT;\n    }\n  }\n\n  /* There are no \"block-listed\" or \"allow-listed\" bytes:\n   * this stream either is empty or has tolerated (\"gray-listed\") bytes only.\n   */\n  return Z_BINARY;\n};\n\n\nlet static_init_done = false;\n\n/* ===========================================================================\n * Initialize the tree data structures for a new zlib stream.\n */\nconst _tr_init$1 = (s) =>\n{\n\n  if (!static_init_done) {\n    tr_static_init();\n    static_init_done = true;\n  }\n\n  s.l_desc  = new TreeDesc(s.dyn_ltree, static_l_desc);\n  s.d_desc  = new TreeDesc(s.dyn_dtree, static_d_desc);\n  s.bl_desc = new TreeDesc(s.bl_tree, static_bl_desc);\n\n  s.bi_buf = 0;\n  s.bi_valid = 0;\n\n  /* Initialize the first block of the first file: */\n  init_block(s);\n};\n\n\n/* ===========================================================================\n * Send a stored block\n */\nconst _tr_stored_block$1 = (s, buf, stored_len, last) => {\n//DeflateState *s;\n//charf *buf;       /* input block */\n//ulg stored_len;   /* length of input block */\n//int last;         /* one if this is the last block for a file */\n\n  send_bits(s, (STORED_BLOCK << 1) + (last ? 1 : 0), 3);    /* send block type */\n  bi_windup(s);        /* align on byte boundary */\n  put_short(s, stored_len);\n  put_short(s, ~stored_len);\n  if (stored_len) {\n    s.pending_buf.set(s.window.subarray(buf, buf + stored_len), s.pending);\n  }\n  s.pending += stored_len;\n};\n\n\n/* ===========================================================================\n * Send one empty static block to give enough lookahead for inflate.\n * This takes 10 bits, of which 7 may remain in the bit buffer.\n */\nconst _tr_align$1 = (s) => {\n  send_bits(s, STATIC_TREES << 1, 3);\n  send_code(s, END_BLOCK, static_ltree);\n  bi_flush(s);\n};\n\n\n/* ===========================================================================\n * Determine the best encoding for the current block: dynamic trees, static\n * trees or store, and write out the encoded block.\n */\nconst _tr_flush_block$1 = (s, buf, stored_len, last) => {\n//DeflateState *s;\n//charf *buf;       /* input block, or NULL if too old */\n//ulg stored_len;   /* length of input block */\n//int last;         /* one if this is the last block for a file */\n\n  let opt_lenb, static_lenb;  /* opt_len and static_len in bytes */\n  let max_blindex = 0;        /* index of last bit length code of non zero freq */\n\n  /* Build the Huffman trees unless a stored block is forced */\n  if (s.level > 0) {\n\n    /* Check if the file is binary or text */\n    if (s.strm.data_type === Z_UNKNOWN$1) {\n      s.strm.data_type = detect_data_type(s);\n    }\n\n    /* Construct the literal and distance trees */\n    build_tree(s, s.l_desc);\n    // Tracev((stderr, \"\\nlit data: dyn %ld, stat %ld\", s->opt_len,\n    //        s->static_len));\n\n    build_tree(s, s.d_desc);\n    // Tracev((stderr, \"\\ndist data: dyn %ld, stat %ld\", s->opt_len,\n    //        s->static_len));\n    /* At this point, opt_len and static_len are the total bit lengths of\n     * the compressed block data, excluding the tree representations.\n     */\n\n    /* Build the bit length tree for the above two trees, and get the index\n     * in bl_order of the last bit length code to send.\n     */\n    max_blindex = build_bl_tree(s);\n\n    /* Determine the best encoding. Compute the block lengths in bytes. */\n    opt_lenb = (s.opt_len + 3 + 7) >>> 3;\n    static_lenb = (s.static_len + 3 + 7) >>> 3;\n\n    // Tracev((stderr, \"\\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u \",\n    //        opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,\n    //        s->sym_next / 3));\n\n    if (static_lenb <= opt_lenb) { opt_lenb = static_lenb; }\n\n  } else {\n    // Assert(buf != (char*)0, \"lost buf\");\n    opt_lenb = static_lenb = stored_len + 5; /* force a stored block */\n  }\n\n  if ((stored_len + 4 <= opt_lenb) && (buf !== -1)) {\n    /* 4: two words for the lengths */\n\n    /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.\n     * Otherwise we can't have processed more than WSIZE input bytes since\n     * the last block flush, because compression would have been\n     * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to\n     * transform a block into a stored block.\n     */\n    _tr_stored_block$1(s, buf, stored_len, last);\n\n  } else if (s.strategy === Z_FIXED$1 || static_lenb === opt_lenb) {\n\n    send_bits(s, (STATIC_TREES << 1) + (last ? 1 : 0), 3);\n    compress_block(s, static_ltree, static_dtree);\n\n  } else {\n    send_bits(s, (DYN_TREES << 1) + (last ? 1 : 0), 3);\n    send_all_trees(s, s.l_desc.max_code + 1, s.d_desc.max_code + 1, max_blindex + 1);\n    compress_block(s, s.dyn_ltree, s.dyn_dtree);\n  }\n  // Assert (s->compressed_len == s->bits_sent, \"bad compressed size\");\n  /* The above check is made mod 2^32, for files larger than 512 MB\n   * and uLong implemented on 32 bits.\n   */\n  init_block(s);\n\n  if (last) {\n    bi_windup(s);\n  }\n  // Tracev((stderr,\"\\ncomprlen %lu(%lu) \", s->compressed_len>>3,\n  //       s->compressed_len-7*last));\n};\n\n/* ===========================================================================\n * Save the match info and tally the frequency counts. Return true if\n * the current block must be flushed.\n */\nconst _tr_tally$1 = (s, dist, lc) => {\n//    deflate_state *s;\n//    unsigned dist;  /* distance of matched string */\n//    unsigned lc;    /* match length-MIN_MATCH or unmatched char (if dist==0) */\n\n  s.pending_buf[s.sym_buf + s.sym_next++] = dist;\n  s.pending_buf[s.sym_buf + s.sym_next++] = dist >> 8;\n  s.pending_buf[s.sym_buf + s.sym_next++] = lc;\n  if (dist === 0) {\n    /* lc is the unmatched char */\n    s.dyn_ltree[lc * 2]/*.Freq*/++;\n  } else {\n    s.matches++;\n    /* Here, lc is the match length - MIN_MATCH */\n    dist--;             /* dist = match distance - 1 */\n    //Assert((ush)dist < (ush)MAX_DIST(s) &&\n    //       (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&\n    //       (ush)d_code(dist) < (ush)D_CODES,  \"_tr_tally: bad match\");\n\n    s.dyn_ltree[(_length_code[lc] + LITERALS$1 + 1) * 2]/*.Freq*/++;\n    s.dyn_dtree[d_code(dist) * 2]/*.Freq*/++;\n  }\n\n  return (s.sym_next === s.sym_end);\n};\n\nvar _tr_init_1  = _tr_init$1;\nvar _tr_stored_block_1 = _tr_stored_block$1;\nvar _tr_flush_block_1  = _tr_flush_block$1;\nvar _tr_tally_1 = _tr_tally$1;\nvar _tr_align_1 = _tr_align$1;\n\nvar trees = {\n\t_tr_init: _tr_init_1,\n\t_tr_stored_block: _tr_stored_block_1,\n\t_tr_flush_block: _tr_flush_block_1,\n\t_tr_tally: _tr_tally_1,\n\t_tr_align: _tr_align_1\n};\n\n// Note: adler32 takes 12% for level 0 and 2% for level 6.\n// It isn't worth it to make additional optimizations as in original.\n// Small size is preferable.\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nconst adler32 = (adler, buf, len, pos) => {\n  let s1 = (adler & 0xffff) |0,\n      s2 = ((adler >>> 16) & 0xffff) |0,\n      n = 0;\n\n  while (len !== 0) {\n    // Set limit ~ twice less than 5552, to keep\n    // s2 in 31-bits, because we force signed ints.\n    // in other case %= will fail.\n    n = len > 2000 ? 2000 : len;\n    len -= n;\n\n    do {\n      s1 = (s1 + buf[pos++]) |0;\n      s2 = (s2 + s1) |0;\n    } while (--n);\n\n    s1 %= 65521;\n    s2 %= 65521;\n  }\n\n  return (s1 | (s2 << 16)) |0;\n};\n\n\nvar adler32_1 = adler32;\n\n// Note: we can't get significant speed boost here.\n// So write code to minimize size - no pregenerated tables\n// and array tools dependencies.\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\n// Use ordinary array, since untyped makes no boost here\nconst makeTable = () => {\n  let c, table = [];\n\n  for (var n = 0; n < 256; n++) {\n    c = n;\n    for (var k = 0; k < 8; k++) {\n      c = ((c & 1) ? (0xEDB88320 ^ (c >>> 1)) : (c >>> 1));\n    }\n    table[n] = c;\n  }\n\n  return table;\n};\n\n// Create table on load. Just 255 signed longs. Not a problem.\nconst crcTable = new Uint32Array(makeTable());\n\n\nconst crc32 = (crc, buf, len, pos) => {\n  const t = crcTable;\n  const end = pos + len;\n\n  crc ^= -1;\n\n  for (let i = pos; i < end; i++) {\n    crc = (crc >>> 8) ^ t[(crc ^ buf[i]) & 0xFF];\n  }\n\n  return (crc ^ (-1)); // >>> 0;\n};\n\n\nvar crc32_1 = crc32;\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nvar messages = {\n  2:      'need dictionary',     /* Z_NEED_DICT       2  */\n  1:      'stream end',          /* Z_STREAM_END      1  */\n  0:      '',                    /* Z_OK              0  */\n  '-1':   'file error',          /* Z_ERRNO         (-1) */\n  '-2':   'stream error',        /* Z_STREAM_ERROR  (-2) */\n  '-3':   'data error',          /* Z_DATA_ERROR    (-3) */\n  '-4':   'insufficient memory', /* Z_MEM_ERROR     (-4) */\n  '-5':   'buffer error',        /* Z_BUF_ERROR     (-5) */\n  '-6':   'incompatible version' /* Z_VERSION_ERROR (-6) */\n};\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nvar constants$2 = {\n\n  /* Allowed flush values; see deflate() and inflate() below for details */\n  Z_NO_FLUSH:         0,\n  Z_PARTIAL_FLUSH:    1,\n  Z_SYNC_FLUSH:       2,\n  Z_FULL_FLUSH:       3,\n  Z_FINISH:           4,\n  Z_BLOCK:            5,\n  Z_TREES:            6,\n\n  /* Return codes for the compression/decompression functions. Negative values\n  * are errors, positive values are used for special but normal events.\n  */\n  Z_OK:               0,\n  Z_STREAM_END:       1,\n  Z_NEED_DICT:        2,\n  Z_ERRNO:           -1,\n  Z_STREAM_ERROR:    -2,\n  Z_DATA_ERROR:      -3,\n  Z_MEM_ERROR:       -4,\n  Z_BUF_ERROR:       -5,\n  //Z_VERSION_ERROR: -6,\n\n  /* compression levels */\n  Z_NO_COMPRESSION:         0,\n  Z_BEST_SPEED:             1,\n  Z_BEST_COMPRESSION:       9,\n  Z_DEFAULT_COMPRESSION:   -1,\n\n\n  Z_FILTERED:               1,\n  Z_HUFFMAN_ONLY:           2,\n  Z_RLE:                    3,\n  Z_FIXED:                  4,\n  Z_DEFAULT_STRATEGY:       0,\n\n  /* Possible values of the data_type field (though see inflate()) */\n  Z_BINARY:                 0,\n  Z_TEXT:                   1,\n  //Z_ASCII:                1, // = Z_TEXT (deprecated)\n  Z_UNKNOWN:                2,\n\n  /* The deflate compression method */\n  Z_DEFLATED:               8\n  //Z_NULL:                 null // Use -1 or null inline, depending on var type\n};\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nconst { _tr_init, _tr_stored_block, _tr_flush_block, _tr_tally, _tr_align } = trees;\n\n\n\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\nconst {\n  Z_NO_FLUSH: Z_NO_FLUSH$2, Z_PARTIAL_FLUSH, Z_FULL_FLUSH: Z_FULL_FLUSH$1, Z_FINISH: Z_FINISH$3, Z_BLOCK: Z_BLOCK$1,\n  Z_OK: Z_OK$3, Z_STREAM_END: Z_STREAM_END$3, Z_STREAM_ERROR: Z_STREAM_ERROR$2, Z_DATA_ERROR: Z_DATA_ERROR$2, Z_BUF_ERROR: Z_BUF_ERROR$1,\n  Z_DEFAULT_COMPRESSION: Z_DEFAULT_COMPRESSION$1,\n  Z_FILTERED, Z_HUFFMAN_ONLY, Z_RLE, Z_FIXED, Z_DEFAULT_STRATEGY: Z_DEFAULT_STRATEGY$1,\n  Z_UNKNOWN,\n  Z_DEFLATED: Z_DEFLATED$2\n} = constants$2;\n\n/*============================================================================*/\n\n\nconst MAX_MEM_LEVEL = 9;\n/* Maximum value for memLevel in deflateInit2 */\nconst MAX_WBITS$1 = 15;\n/* 32K LZ77 window */\nconst DEF_MEM_LEVEL = 8;\n\n\nconst LENGTH_CODES  = 29;\n/* number of length codes, not counting the special END_BLOCK code */\nconst LITERALS      = 256;\n/* number of literal bytes 0..255 */\nconst L_CODES       = LITERALS + 1 + LENGTH_CODES;\n/* number of Literal or Length codes, including the END_BLOCK code */\nconst D_CODES       = 30;\n/* number of distance codes */\nconst BL_CODES      = 19;\n/* number of codes used to transfer the bit lengths */\nconst HEAP_SIZE     = 2 * L_CODES + 1;\n/* maximum heap size */\nconst MAX_BITS  = 15;\n/* All codes must not exceed MAX_BITS bits */\n\nconst MIN_MATCH = 3;\nconst MAX_MATCH = 258;\nconst MIN_LOOKAHEAD = (MAX_MATCH + MIN_MATCH + 1);\n\nconst PRESET_DICT = 0x20;\n\nconst INIT_STATE    =  42;    /* zlib header -> BUSY_STATE */\n//#ifdef GZIP\nconst GZIP_STATE    =  57;    /* gzip header -> BUSY_STATE | EXTRA_STATE */\n//#endif\nconst EXTRA_STATE   =  69;    /* gzip extra block -> NAME_STATE */\nconst NAME_STATE    =  73;    /* gzip file name -> COMMENT_STATE */\nconst COMMENT_STATE =  91;    /* gzip comment -> HCRC_STATE */\nconst HCRC_STATE    = 103;    /* gzip header CRC -> BUSY_STATE */\nconst BUSY_STATE    = 113;    /* deflate -> FINISH_STATE */\nconst FINISH_STATE  = 666;    /* stream complete */\n\nconst BS_NEED_MORE      = 1; /* block not completed, need more input or more output */\nconst BS_BLOCK_DONE     = 2; /* block flush performed */\nconst BS_FINISH_STARTED = 3; /* finish started, need only more output at next deflate */\nconst BS_FINISH_DONE    = 4; /* finish done, accept no more input or output */\n\nconst OS_CODE = 0x03; // Unix :) . Don't detect, use this default.\n\nconst err = (strm, errorCode) => {\n  strm.msg = messages[errorCode];\n  return errorCode;\n};\n\nconst rank = (f) => {\n  return ((f) * 2) - ((f) > 4 ? 9 : 0);\n};\n\nconst zero = (buf) => {\n  let len = buf.length; while (--len >= 0) { buf[len] = 0; }\n};\n\n/* ===========================================================================\n * Slide the hash table when sliding the window down (could be avoided with 32\n * bit values at the expense of memory usage). We slide even when level == 0 to\n * keep the hash table consistent if we switch back to level > 0 later.\n */\nconst slide_hash = (s) => {\n  let n, m;\n  let p;\n  let wsize = s.w_size;\n\n  n = s.hash_size;\n  p = n;\n  do {\n    m = s.head[--p];\n    s.head[p] = (m >= wsize ? m - wsize : 0);\n  } while (--n);\n  n = wsize;\n//#ifndef FASTEST\n  p = n;\n  do {\n    m = s.prev[--p];\n    s.prev[p] = (m >= wsize ? m - wsize : 0);\n    /* If n is not on any hash chain, prev[n] is garbage but\n     * its value will never be used.\n     */\n  } while (--n);\n//#endif\n};\n\n/* eslint-disable new-cap */\nlet HASH_ZLIB = (s, prev, data) => ((prev << s.hash_shift) ^ data) & s.hash_mask;\n// This hash causes less collisions, https://github.com/nodeca/pako/issues/135\n// But breaks binary compatibility\n//let HASH_FAST = (s, prev, data) => ((prev << 8) + (prev >> 8) + (data << 4)) & s.hash_mask;\nlet HASH = HASH_ZLIB;\n\n\n/* =========================================================================\n * Flush as much pending output as possible. All deflate() output, except for\n * some deflate_stored() output, goes through this function so some\n * applications may wish to modify it to avoid allocating a large\n * strm->next_out buffer and copying into it. (See also read_buf()).\n */\nconst flush_pending = (strm) => {\n  const s = strm.state;\n\n  //_tr_flush_bits(s);\n  let len = s.pending;\n  if (len > strm.avail_out) {\n    len = strm.avail_out;\n  }\n  if (len === 0) { return; }\n\n  strm.output.set(s.pending_buf.subarray(s.pending_out, s.pending_out + len), strm.next_out);\n  strm.next_out  += len;\n  s.pending_out  += len;\n  strm.total_out += len;\n  strm.avail_out -= len;\n  s.pending      -= len;\n  if (s.pending === 0) {\n    s.pending_out = 0;\n  }\n};\n\n\nconst flush_block_only = (s, last) => {\n  _tr_flush_block(s, (s.block_start >= 0 ? s.block_start : -1), s.strstart - s.block_start, last);\n  s.block_start = s.strstart;\n  flush_pending(s.strm);\n};\n\n\nconst put_byte = (s, b) => {\n  s.pending_buf[s.pending++] = b;\n};\n\n\n/* =========================================================================\n * Put a short in the pending buffer. The 16-bit value is put in MSB order.\n * IN assertion: the stream state is correct and there is enough room in\n * pending_buf.\n */\nconst putShortMSB = (s, b) => {\n\n  //  put_byte(s, (Byte)(b >> 8));\n//  put_byte(s, (Byte)(b & 0xff));\n  s.pending_buf[s.pending++] = (b >>> 8) & 0xff;\n  s.pending_buf[s.pending++] = b & 0xff;\n};\n\n\n/* ===========================================================================\n * Read a new buffer from the current input stream, update the adler32\n * and total number of bytes read.  All deflate() input goes through\n * this function so some applications may wish to modify it to avoid\n * allocating a large strm->input buffer and copying from it.\n * (See also flush_pending()).\n */\nconst read_buf = (strm, buf, start, size) => {\n\n  let len = strm.avail_in;\n\n  if (len > size) { len = size; }\n  if (len === 0) { return 0; }\n\n  strm.avail_in -= len;\n\n  // zmemcpy(buf, strm->next_in, len);\n  buf.set(strm.input.subarray(strm.next_in, strm.next_in + len), start);\n  if (strm.state.wrap === 1) {\n    strm.adler = adler32_1(strm.adler, buf, len, start);\n  }\n\n  else if (strm.state.wrap === 2) {\n    strm.adler = crc32_1(strm.adler, buf, len, start);\n  }\n\n  strm.next_in += len;\n  strm.total_in += len;\n\n  return len;\n};\n\n\n/* ===========================================================================\n * Set match_start to the longest match starting at the given string and\n * return its length. Matches shorter or equal to prev_length are discarded,\n * in which case the result is equal to prev_length and match_start is\n * garbage.\n * IN assertions: cur_match is the head of the hash chain for the current\n *   string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1\n * OUT assertion: the match length is not greater than s->lookahead.\n */\nconst longest_match = (s, cur_match) => {\n\n  let chain_length = s.max_chain_length;      /* max hash chain length */\n  let scan = s.strstart; /* current string */\n  let match;                       /* matched string */\n  let len;                           /* length of current match */\n  let best_len = s.prev_length;              /* best match length so far */\n  let nice_match = s.nice_match;             /* stop if match long enough */\n  const limit = (s.strstart > (s.w_size - MIN_LOOKAHEAD)) ?\n      s.strstart - (s.w_size - MIN_LOOKAHEAD) : 0/*NIL*/;\n\n  const _win = s.window; // shortcut\n\n  const wmask = s.w_mask;\n  const prev  = s.prev;\n\n  /* Stop when cur_match becomes <= limit. To simplify the code,\n   * we prevent matches with the string of window index 0.\n   */\n\n  const strend = s.strstart + MAX_MATCH;\n  let scan_end1  = _win[scan + best_len - 1];\n  let scan_end   = _win[scan + best_len];\n\n  /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.\n   * It is easy to get rid of this optimization if necessary.\n   */\n  // Assert(s->hash_bits >= 8 && MAX_MATCH == 258, \"Code too clever\");\n\n  /* Do not waste too much time if we already have a good match: */\n  if (s.prev_length >= s.good_match) {\n    chain_length >>= 2;\n  }\n  /* Do not look for matches beyond the end of the input. This is necessary\n   * to make deflate deterministic.\n   */\n  if (nice_match > s.lookahead) { nice_match = s.lookahead; }\n\n  // Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, \"need lookahead\");\n\n  do {\n    // Assert(cur_match < s->strstart, \"no future\");\n    match = cur_match;\n\n    /* Skip to next match if the match length cannot increase\n     * or if the match length is less than 2.  Note that the checks below\n     * for insufficient lookahead only occur occasionally for performance\n     * reasons.  Therefore uninitialized memory will be accessed, and\n     * conditional jumps will be made that depend on those values.\n     * However the length of the match is limited to the lookahead, so\n     * the output of deflate is not affected by the uninitialized values.\n     */\n\n    if (_win[match + best_len]     !== scan_end  ||\n        _win[match + best_len - 1] !== scan_end1 ||\n        _win[match]                !== _win[scan] ||\n        _win[++match]              !== _win[scan + 1]) {\n      continue;\n    }\n\n    /* The check at best_len-1 can be removed because it will be made\n     * again later. (This heuristic is not always a win.)\n     * It is not necessary to compare scan[2] and match[2] since they\n     * are always equal when the other bytes match, given that\n     * the hash keys are equal and that HASH_BITS >= 8.\n     */\n    scan += 2;\n    match++;\n    // Assert(*scan == *match, \"match[2]?\");\n\n    /* We check for insufficient lookahead only every 8th comparison;\n     * the 256th check will be made at strstart+258.\n     */\n    do {\n      /*jshint noempty:false*/\n    } while (_win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&\n             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&\n             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&\n             _win[++scan] === _win[++match] && _win[++scan] === _win[++match] &&\n             scan < strend);\n\n    // Assert(scan <= s->window+(unsigned)(s->window_size-1), \"wild scan\");\n\n    len = MAX_MATCH - (strend - scan);\n    scan = strend - MAX_MATCH;\n\n    if (len > best_len) {\n      s.match_start = cur_match;\n      best_len = len;\n      if (len >= nice_match) {\n        break;\n      }\n      scan_end1  = _win[scan + best_len - 1];\n      scan_end   = _win[scan + best_len];\n    }\n  } while ((cur_match = prev[cur_match & wmask]) > limit && --chain_length !== 0);\n\n  if (best_len <= s.lookahead) {\n    return best_len;\n  }\n  return s.lookahead;\n};\n\n\n/* ===========================================================================\n * Fill the window when the lookahead becomes insufficient.\n * Updates strstart and lookahead.\n *\n * IN assertion: lookahead < MIN_LOOKAHEAD\n * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD\n *    At least one byte has been read, or avail_in == 0; reads are\n *    performed for at least two bytes (required for the zip translate_eol\n *    option -- not supported here).\n */\nconst fill_window = (s) => {\n\n  const _w_size = s.w_size;\n  let n, more, str;\n\n  //Assert(s->lookahead < MIN_LOOKAHEAD, \"already enough lookahead\");\n\n  do {\n    more = s.window_size - s.lookahead - s.strstart;\n\n    // JS ints have 32 bit, block below not needed\n    /* Deal with !@#$% 64K limit: */\n    //if (sizeof(int) <= 2) {\n    //    if (more == 0 && s->strstart == 0 && s->lookahead == 0) {\n    //        more = wsize;\n    //\n    //  } else if (more == (unsigned)(-1)) {\n    //        /* Very unlikely, but possible on 16 bit machine if\n    //         * strstart == 0 && lookahead == 1 (input done a byte at time)\n    //         */\n    //        more--;\n    //    }\n    //}\n\n\n    /* If the window is almost full and there is insufficient lookahead,\n     * move the upper half to the lower one to make room in the upper half.\n     */\n    if (s.strstart >= _w_size + (_w_size - MIN_LOOKAHEAD)) {\n\n      s.window.set(s.window.subarray(_w_size, _w_size + _w_size - more), 0);\n      s.match_start -= _w_size;\n      s.strstart -= _w_size;\n      /* we now have strstart >= MAX_DIST */\n      s.block_start -= _w_size;\n      if (s.insert > s.strstart) {\n        s.insert = s.strstart;\n      }\n      slide_hash(s);\n      more += _w_size;\n    }\n    if (s.strm.avail_in === 0) {\n      break;\n    }\n\n    /* If there was no sliding:\n     *    strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&\n     *    more == window_size - lookahead - strstart\n     * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)\n     * => more >= window_size - 2*WSIZE + 2\n     * In the BIG_MEM or MMAP case (not yet supported),\n     *   window_size == input_size + MIN_LOOKAHEAD  &&\n     *   strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.\n     * Otherwise, window_size == 2*WSIZE so more >= 2.\n     * If there was sliding, more >= WSIZE. So in all cases, more >= 2.\n     */\n    //Assert(more >= 2, \"more < 2\");\n    n = read_buf(s.strm, s.window, s.strstart + s.lookahead, more);\n    s.lookahead += n;\n\n    /* Initialize the hash value now that we have some input: */\n    if (s.lookahead + s.insert >= MIN_MATCH) {\n      str = s.strstart - s.insert;\n      s.ins_h = s.window[str];\n\n      /* UPDATE_HASH(s, s->ins_h, s->window[str + 1]); */\n      s.ins_h = HASH(s, s.ins_h, s.window[str + 1]);\n//#if MIN_MATCH != 3\n//        Call update_hash() MIN_MATCH-3 more times\n//#endif\n      while (s.insert) {\n        /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */\n        s.ins_h = HASH(s, s.ins_h, s.window[str + MIN_MATCH - 1]);\n\n        s.prev[str & s.w_mask] = s.head[s.ins_h];\n        s.head[s.ins_h] = str;\n        str++;\n        s.insert--;\n        if (s.lookahead + s.insert < MIN_MATCH) {\n          break;\n        }\n      }\n    }\n    /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,\n     * but this is not important since only literal bytes will be emitted.\n     */\n\n  } while (s.lookahead < MIN_LOOKAHEAD && s.strm.avail_in !== 0);\n\n  /* If the WIN_INIT bytes after the end of the current data have never been\n   * written, then zero those bytes in order to avoid memory check reports of\n   * the use of uninitialized (or uninitialised as Julian writes) bytes by\n   * the longest match routines.  Update the high water mark for the next\n   * time through here.  WIN_INIT is set to MAX_MATCH since the longest match\n   * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.\n   */\n//  if (s.high_water < s.window_size) {\n//    const curr = s.strstart + s.lookahead;\n//    let init = 0;\n//\n//    if (s.high_water < curr) {\n//      /* Previous high water mark below current data -- zero WIN_INIT\n//       * bytes or up to end of window, whichever is less.\n//       */\n//      init = s.window_size - curr;\n//      if (init > WIN_INIT)\n//        init = WIN_INIT;\n//      zmemzero(s->window + curr, (unsigned)init);\n//      s->high_water = curr + init;\n//    }\n//    else if (s->high_water < (ulg)curr + WIN_INIT) {\n//      /* High water mark at or above current data, but below current data\n//       * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up\n//       * to end of window, whichever is less.\n//       */\n//      init = (ulg)curr + WIN_INIT - s->high_water;\n//      if (init > s->window_size - s->high_water)\n//        init = s->window_size - s->high_water;\n//      zmemzero(s->window + s->high_water, (unsigned)init);\n//      s->high_water += init;\n//    }\n//  }\n//\n//  Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,\n//    \"not enough room for search\");\n};\n\n/* ===========================================================================\n * Copy without compression as much as possible from the input stream, return\n * the current block state.\n *\n * In case deflateParams() is used to later switch to a non-zero compression\n * level, s->matches (otherwise unused when storing) keeps track of the number\n * of hash table slides to perform. If s->matches is 1, then one hash table\n * slide will be done when switching. If s->matches is 2, the maximum value\n * allowed here, then the hash table will be cleared, since two or more slides\n * is the same as a clear.\n *\n * deflate_stored() is written to minimize the number of times an input byte is\n * copied. It is most efficient with large input and output buffers, which\n * maximizes the opportunites to have a single copy from next_in to next_out.\n */\nconst deflate_stored = (s, flush) => {\n\n  /* Smallest worthy block size when not flushing or finishing. By default\n   * this is 32K. This can be as small as 507 bytes for memLevel == 1. For\n   * large input and output buffers, the stored block size will be larger.\n   */\n  let min_block = s.pending_buf_size - 5 > s.w_size ? s.w_size : s.pending_buf_size - 5;\n\n  /* Copy as many min_block or larger stored blocks directly to next_out as\n   * possible. If flushing, copy the remaining available input to next_out as\n   * stored blocks, if there is enough space.\n   */\n  let len, left, have, last = 0;\n  let used = s.strm.avail_in;\n  do {\n    /* Set len to the maximum size block that we can copy directly with the\n     * available input data and output space. Set left to how much of that\n     * would be copied from what's left in the window.\n     */\n    len = 65535/* MAX_STORED */;     /* maximum deflate stored block length */\n    have = (s.bi_valid + 42) >> 3;     /* number of header bytes */\n    if (s.strm.avail_out < have) {         /* need room for header */\n      break;\n    }\n      /* maximum stored block length that will fit in avail_out: */\n    have = s.strm.avail_out - have;\n    left = s.strstart - s.block_start;  /* bytes left in window */\n    if (len > left + s.strm.avail_in) {\n      len = left + s.strm.avail_in;   /* limit len to the input */\n    }\n    if (len > have) {\n      len = have;             /* limit len to the output */\n    }\n\n    /* If the stored block would be less than min_block in length, or if\n     * unable to copy all of the available input when flushing, then try\n     * copying to the window and the pending buffer instead. Also don't\n     * write an empty block when flushing -- deflate() does that.\n     */\n    if (len < min_block && ((len === 0 && flush !== Z_FINISH$3) ||\n                        flush === Z_NO_FLUSH$2 ||\n                        len !== left + s.strm.avail_in)) {\n      break;\n    }\n\n    /* Make a dummy stored block in pending to get the header bytes,\n     * including any pending bits. This also updates the debugging counts.\n     */\n    last = flush === Z_FINISH$3 && len === left + s.strm.avail_in ? 1 : 0;\n    _tr_stored_block(s, 0, 0, last);\n\n    /* Replace the lengths in the dummy stored block with len. */\n    s.pending_buf[s.pending - 4] = len;\n    s.pending_buf[s.pending - 3] = len >> 8;\n    s.pending_buf[s.pending - 2] = ~len;\n    s.pending_buf[s.pending - 1] = ~len >> 8;\n\n    /* Write the stored block header bytes. */\n    flush_pending(s.strm);\n\n//#ifdef ZLIB_DEBUG\n//    /* Update debugging counts for the data about to be copied. */\n//    s->compressed_len += len << 3;\n//    s->bits_sent += len << 3;\n//#endif\n\n    /* Copy uncompressed bytes from the window to next_out. */\n    if (left) {\n      if (left > len) {\n        left = len;\n      }\n      //zmemcpy(s->strm->next_out, s->window + s->block_start, left);\n      s.strm.output.set(s.window.subarray(s.block_start, s.block_start + left), s.strm.next_out);\n      s.strm.next_out += left;\n      s.strm.avail_out -= left;\n      s.strm.total_out += left;\n      s.block_start += left;\n      len -= left;\n    }\n\n    /* Copy uncompressed bytes directly from next_in to next_out, updating\n     * the check value.\n     */\n    if (len) {\n      read_buf(s.strm, s.strm.output, s.strm.next_out, len);\n      s.strm.next_out += len;\n      s.strm.avail_out -= len;\n      s.strm.total_out += len;\n    }\n  } while (last === 0);\n\n  /* Update the sliding window with the last s->w_size bytes of the copied\n   * data, or append all of the copied data to the existing window if less\n   * than s->w_size bytes were copied. Also update the number of bytes to\n   * insert in the hash tables, in the event that deflateParams() switches to\n   * a non-zero compression level.\n   */\n  used -= s.strm.avail_in;    /* number of input bytes directly copied */\n  if (used) {\n    /* If any input was used, then no unused input remains in the window,\n     * therefore s->block_start == s->strstart.\n     */\n    if (used >= s.w_size) {  /* supplant the previous history */\n      s.matches = 2;     /* clear hash */\n      //zmemcpy(s->window, s->strm->next_in - s->w_size, s->w_size);\n      s.window.set(s.strm.input.subarray(s.strm.next_in - s.w_size, s.strm.next_in), 0);\n      s.strstart = s.w_size;\n      s.insert = s.strstart;\n    }\n    else {\n      if (s.window_size - s.strstart <= used) {\n        /* Slide the window down. */\n        s.strstart -= s.w_size;\n        //zmemcpy(s->window, s->window + s->w_size, s->strstart);\n        s.window.set(s.window.subarray(s.w_size, s.w_size + s.strstart), 0);\n        if (s.matches < 2) {\n          s.matches++;   /* add a pending slide_hash() */\n        }\n        if (s.insert > s.strstart) {\n          s.insert = s.strstart;\n        }\n      }\n      //zmemcpy(s->window + s->strstart, s->strm->next_in - used, used);\n      s.window.set(s.strm.input.subarray(s.strm.next_in - used, s.strm.next_in), s.strstart);\n      s.strstart += used;\n      s.insert += used > s.w_size - s.insert ? s.w_size - s.insert : used;\n    }\n    s.block_start = s.strstart;\n  }\n  if (s.high_water < s.strstart) {\n    s.high_water = s.strstart;\n  }\n\n  /* If the last block was written to next_out, then done. */\n  if (last) {\n    return BS_FINISH_DONE;\n  }\n\n  /* If flushing and all input has been consumed, then done. */\n  if (flush !== Z_NO_FLUSH$2 && flush !== Z_FINISH$3 &&\n    s.strm.avail_in === 0 && s.strstart === s.block_start) {\n    return BS_BLOCK_DONE;\n  }\n\n  /* Fill the window with any remaining input. */\n  have = s.window_size - s.strstart;\n  if (s.strm.avail_in > have && s.block_start >= s.w_size) {\n    /* Slide the window down. */\n    s.block_start -= s.w_size;\n    s.strstart -= s.w_size;\n    //zmemcpy(s->window, s->window + s->w_size, s->strstart);\n    s.window.set(s.window.subarray(s.w_size, s.w_size + s.strstart), 0);\n    if (s.matches < 2) {\n      s.matches++;       /* add a pending slide_hash() */\n    }\n    have += s.w_size;      /* more space now */\n    if (s.insert > s.strstart) {\n      s.insert = s.strstart;\n    }\n  }\n  if (have > s.strm.avail_in) {\n    have = s.strm.avail_in;\n  }\n  if (have) {\n    read_buf(s.strm, s.window, s.strstart, have);\n    s.strstart += have;\n    s.insert += have > s.w_size - s.insert ? s.w_size - s.insert : have;\n  }\n  if (s.high_water < s.strstart) {\n    s.high_water = s.strstart;\n  }\n\n  /* There was not enough avail_out to write a complete worthy or flushed\n   * stored block to next_out. Write a stored block to pending instead, if we\n   * have enough input for a worthy block, or if flushing and there is enough\n   * room for the remaining input as a stored block in the pending buffer.\n   */\n  have = (s.bi_valid + 42) >> 3;     /* number of header bytes */\n    /* maximum stored block length that will fit in pending: */\n  have = s.pending_buf_size - have > 65535/* MAX_STORED */ ? 65535/* MAX_STORED */ : s.pending_buf_size - have;\n  min_block = have > s.w_size ? s.w_size : have;\n  left = s.strstart - s.block_start;\n  if (left >= min_block ||\n     ((left || flush === Z_FINISH$3) && flush !== Z_NO_FLUSH$2 &&\n     s.strm.avail_in === 0 && left <= have)) {\n    len = left > have ? have : left;\n    last = flush === Z_FINISH$3 && s.strm.avail_in === 0 &&\n         len === left ? 1 : 0;\n    _tr_stored_block(s, s.block_start, len, last);\n    s.block_start += len;\n    flush_pending(s.strm);\n  }\n\n  /* We've done all we can with the available input and output. */\n  return last ? BS_FINISH_STARTED : BS_NEED_MORE;\n};\n\n\n/* ===========================================================================\n * Compress as much as possible from the input stream, return the current\n * block state.\n * This function does not perform lazy evaluation of matches and inserts\n * new strings in the dictionary only for unmatched strings or for short\n * matches. It is used only for the fast compression options.\n */\nconst deflate_fast = (s, flush) => {\n\n  let hash_head;        /* head of the hash chain */\n  let bflush;           /* set if current block must be flushed */\n\n  for (;;) {\n    /* Make sure that we always have enough lookahead, except\n     * at the end of the input file. We need MAX_MATCH bytes\n     * for the next match, plus MIN_MATCH bytes to insert the\n     * string following the next match.\n     */\n    if (s.lookahead < MIN_LOOKAHEAD) {\n      fill_window(s);\n      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH$2) {\n        return BS_NEED_MORE;\n      }\n      if (s.lookahead === 0) {\n        break; /* flush the current block */\n      }\n    }\n\n    /* Insert the string window[strstart .. strstart+2] in the\n     * dictionary, and set hash_head to the head of the hash chain:\n     */\n    hash_head = 0/*NIL*/;\n    if (s.lookahead >= MIN_MATCH) {\n      /*** INSERT_STRING(s, s.strstart, hash_head); ***/\n      s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);\n      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];\n      s.head[s.ins_h] = s.strstart;\n      /***/\n    }\n\n    /* Find the longest match, discarding those <= prev_length.\n     * At this point we have always match_length < MIN_MATCH\n     */\n    if (hash_head !== 0/*NIL*/ && ((s.strstart - hash_head) <= (s.w_size - MIN_LOOKAHEAD))) {\n      /* To simplify the code, we prevent matches with the string\n       * of window index 0 (in particular we have to avoid a match\n       * of the string with itself at the start of the input file).\n       */\n      s.match_length = longest_match(s, hash_head);\n      /* longest_match() sets match_start */\n    }\n    if (s.match_length >= MIN_MATCH) {\n      // check_match(s, s.strstart, s.match_start, s.match_length); // for debug only\n\n      /*** _tr_tally_dist(s, s.strstart - s.match_start,\n                     s.match_length - MIN_MATCH, bflush); ***/\n      bflush = _tr_tally(s, s.strstart - s.match_start, s.match_length - MIN_MATCH);\n\n      s.lookahead -= s.match_length;\n\n      /* Insert new strings in the hash table only if the match length\n       * is not too large. This saves time but degrades compression.\n       */\n      if (s.match_length <= s.max_lazy_match/*max_insert_length*/ && s.lookahead >= MIN_MATCH) {\n        s.match_length--; /* string at strstart already in table */\n        do {\n          s.strstart++;\n          /*** INSERT_STRING(s, s.strstart, hash_head); ***/\n          s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);\n          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];\n          s.head[s.ins_h] = s.strstart;\n          /***/\n          /* strstart never exceeds WSIZE-MAX_MATCH, so there are\n           * always MIN_MATCH bytes ahead.\n           */\n        } while (--s.match_length !== 0);\n        s.strstart++;\n      } else\n      {\n        s.strstart += s.match_length;\n        s.match_length = 0;\n        s.ins_h = s.window[s.strstart];\n        /* UPDATE_HASH(s, s.ins_h, s.window[s.strstart+1]); */\n        s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + 1]);\n\n//#if MIN_MATCH != 3\n//                Call UPDATE_HASH() MIN_MATCH-3 more times\n//#endif\n        /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not\n         * matter since it will be recomputed at next deflate call.\n         */\n      }\n    } else {\n      /* No match, output a literal byte */\n      //Tracevv((stderr,\"%c\", s.window[s.strstart]));\n      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/\n      bflush = _tr_tally(s, 0, s.window[s.strstart]);\n\n      s.lookahead--;\n      s.strstart++;\n    }\n    if (bflush) {\n      /*** FLUSH_BLOCK(s, 0); ***/\n      flush_block_only(s, false);\n      if (s.strm.avail_out === 0) {\n        return BS_NEED_MORE;\n      }\n      /***/\n    }\n  }\n  s.insert = ((s.strstart < (MIN_MATCH - 1)) ? s.strstart : MIN_MATCH - 1);\n  if (flush === Z_FINISH$3) {\n    /*** FLUSH_BLOCK(s, 1); ***/\n    flush_block_only(s, true);\n    if (s.strm.avail_out === 0) {\n      return BS_FINISH_STARTED;\n    }\n    /***/\n    return BS_FINISH_DONE;\n  }\n  if (s.sym_next) {\n    /*** FLUSH_BLOCK(s, 0); ***/\n    flush_block_only(s, false);\n    if (s.strm.avail_out === 0) {\n      return BS_NEED_MORE;\n    }\n    /***/\n  }\n  return BS_BLOCK_DONE;\n};\n\n/* ===========================================================================\n * Same as above, but achieves better compression. We use a lazy\n * evaluation for matches: a match is finally adopted only if there is\n * no better match at the next window position.\n */\nconst deflate_slow = (s, flush) => {\n\n  let hash_head;          /* head of hash chain */\n  let bflush;              /* set if current block must be flushed */\n\n  let max_insert;\n\n  /* Process the input block. */\n  for (;;) {\n    /* Make sure that we always have enough lookahead, except\n     * at the end of the input file. We need MAX_MATCH bytes\n     * for the next match, plus MIN_MATCH bytes to insert the\n     * string following the next match.\n     */\n    if (s.lookahead < MIN_LOOKAHEAD) {\n      fill_window(s);\n      if (s.lookahead < MIN_LOOKAHEAD && flush === Z_NO_FLUSH$2) {\n        return BS_NEED_MORE;\n      }\n      if (s.lookahead === 0) { break; } /* flush the current block */\n    }\n\n    /* Insert the string window[strstart .. strstart+2] in the\n     * dictionary, and set hash_head to the head of the hash chain:\n     */\n    hash_head = 0/*NIL*/;\n    if (s.lookahead >= MIN_MATCH) {\n      /*** INSERT_STRING(s, s.strstart, hash_head); ***/\n      s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);\n      hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];\n      s.head[s.ins_h] = s.strstart;\n      /***/\n    }\n\n    /* Find the longest match, discarding those <= prev_length.\n     */\n    s.prev_length = s.match_length;\n    s.prev_match = s.match_start;\n    s.match_length = MIN_MATCH - 1;\n\n    if (hash_head !== 0/*NIL*/ && s.prev_length < s.max_lazy_match &&\n        s.strstart - hash_head <= (s.w_size - MIN_LOOKAHEAD)/*MAX_DIST(s)*/) {\n      /* To simplify the code, we prevent matches with the string\n       * of window index 0 (in particular we have to avoid a match\n       * of the string with itself at the start of the input file).\n       */\n      s.match_length = longest_match(s, hash_head);\n      /* longest_match() sets match_start */\n\n      if (s.match_length <= 5 &&\n         (s.strategy === Z_FILTERED || (s.match_length === MIN_MATCH && s.strstart - s.match_start > 4096/*TOO_FAR*/))) {\n\n        /* If prev_match is also MIN_MATCH, match_start is garbage\n         * but we will ignore the current match anyway.\n         */\n        s.match_length = MIN_MATCH - 1;\n      }\n    }\n    /* If there was a match at the previous step and the current\n     * match is not better, output the previous match:\n     */\n    if (s.prev_length >= MIN_MATCH && s.match_length <= s.prev_length) {\n      max_insert = s.strstart + s.lookahead - MIN_MATCH;\n      /* Do not insert strings in hash table beyond this. */\n\n      //check_match(s, s.strstart-1, s.prev_match, s.prev_length);\n\n      /***_tr_tally_dist(s, s.strstart - 1 - s.prev_match,\n                     s.prev_length - MIN_MATCH, bflush);***/\n      bflush = _tr_tally(s, s.strstart - 1 - s.prev_match, s.prev_length - MIN_MATCH);\n      /* Insert in hash table all strings up to the end of the match.\n       * strstart-1 and strstart are already inserted. If there is not\n       * enough lookahead, the last two strings are not inserted in\n       * the hash table.\n       */\n      s.lookahead -= s.prev_length - 1;\n      s.prev_length -= 2;\n      do {\n        if (++s.strstart <= max_insert) {\n          /*** INSERT_STRING(s, s.strstart, hash_head); ***/\n          s.ins_h = HASH(s, s.ins_h, s.window[s.strstart + MIN_MATCH - 1]);\n          hash_head = s.prev[s.strstart & s.w_mask] = s.head[s.ins_h];\n          s.head[s.ins_h] = s.strstart;\n          /***/\n        }\n      } while (--s.prev_length !== 0);\n      s.match_available = 0;\n      s.match_length = MIN_MATCH - 1;\n      s.strstart++;\n\n      if (bflush) {\n        /*** FLUSH_BLOCK(s, 0); ***/\n        flush_block_only(s, false);\n        if (s.strm.avail_out === 0) {\n          return BS_NEED_MORE;\n        }\n        /***/\n      }\n\n    } else if (s.match_available) {\n      /* If there was no match at the previous position, output a\n       * single literal. If there was a match but the current match\n       * is longer, truncate the previous match to a single literal.\n       */\n      //Tracevv((stderr,\"%c\", s->window[s->strstart-1]));\n      /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/\n      bflush = _tr_tally(s, 0, s.window[s.strstart - 1]);\n\n      if (bflush) {\n        /*** FLUSH_BLOCK_ONLY(s, 0) ***/\n        flush_block_only(s, false);\n        /***/\n      }\n      s.strstart++;\n      s.lookahead--;\n      if (s.strm.avail_out === 0) {\n        return BS_NEED_MORE;\n      }\n    } else {\n      /* There is no previous match to compare with, wait for\n       * the next step to decide.\n       */\n      s.match_available = 1;\n      s.strstart++;\n      s.lookahead--;\n    }\n  }\n  //Assert (flush != Z_NO_FLUSH, \"no flush?\");\n  if (s.match_available) {\n    //Tracevv((stderr,\"%c\", s->window[s->strstart-1]));\n    /*** _tr_tally_lit(s, s.window[s.strstart-1], bflush); ***/\n    bflush = _tr_tally(s, 0, s.window[s.strstart - 1]);\n\n    s.match_available = 0;\n  }\n  s.insert = s.strstart < MIN_MATCH - 1 ? s.strstart : MIN_MATCH - 1;\n  if (flush === Z_FINISH$3) {\n    /*** FLUSH_BLOCK(s, 1); ***/\n    flush_block_only(s, true);\n    if (s.strm.avail_out === 0) {\n      return BS_FINISH_STARTED;\n    }\n    /***/\n    return BS_FINISH_DONE;\n  }\n  if (s.sym_next) {\n    /*** FLUSH_BLOCK(s, 0); ***/\n    flush_block_only(s, false);\n    if (s.strm.avail_out === 0) {\n      return BS_NEED_MORE;\n    }\n    /***/\n  }\n\n  return BS_BLOCK_DONE;\n};\n\n\n/* ===========================================================================\n * For Z_RLE, simply look for runs of bytes, generate matches only of distance\n * one.  Do not maintain a hash table.  (It will be regenerated if this run of\n * deflate switches away from Z_RLE.)\n */\nconst deflate_rle = (s, flush) => {\n\n  let bflush;            /* set if current block must be flushed */\n  let prev;              /* byte at distance one to match */\n  let scan, strend;      /* scan goes up to strend for length of run */\n\n  const _win = s.window;\n\n  for (;;) {\n    /* Make sure that we always have enough lookahead, except\n     * at the end of the input file. We need MAX_MATCH bytes\n     * for the longest run, plus one for the unrolled loop.\n     */\n    if (s.lookahead <= MAX_MATCH) {\n      fill_window(s);\n      if (s.lookahead <= MAX_MATCH && flush === Z_NO_FLUSH$2) {\n        return BS_NEED_MORE;\n      }\n      if (s.lookahead === 0) { break; } /* flush the current block */\n    }\n\n    /* See how many times the previous byte repeats */\n    s.match_length = 0;\n    if (s.lookahead >= MIN_MATCH && s.strstart > 0) {\n      scan = s.strstart - 1;\n      prev = _win[scan];\n      if (prev === _win[++scan] && prev === _win[++scan] && prev === _win[++scan]) {\n        strend = s.strstart + MAX_MATCH;\n        do {\n          /*jshint noempty:false*/\n        } while (prev === _win[++scan] && prev === _win[++scan] &&\n                 prev === _win[++scan] && prev === _win[++scan] &&\n                 prev === _win[++scan] && prev === _win[++scan] &&\n                 prev === _win[++scan] && prev === _win[++scan] &&\n                 scan < strend);\n        s.match_length = MAX_MATCH - (strend - scan);\n        if (s.match_length > s.lookahead) {\n          s.match_length = s.lookahead;\n        }\n      }\n      //Assert(scan <= s->window+(uInt)(s->window_size-1), \"wild scan\");\n    }\n\n    /* Emit match if have run of MIN_MATCH or longer, else emit literal */\n    if (s.match_length >= MIN_MATCH) {\n      //check_match(s, s.strstart, s.strstart - 1, s.match_length);\n\n      /*** _tr_tally_dist(s, 1, s.match_length - MIN_MATCH, bflush); ***/\n      bflush = _tr_tally(s, 1, s.match_length - MIN_MATCH);\n\n      s.lookahead -= s.match_length;\n      s.strstart += s.match_length;\n      s.match_length = 0;\n    } else {\n      /* No match, output a literal byte */\n      //Tracevv((stderr,\"%c\", s->window[s->strstart]));\n      /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/\n      bflush = _tr_tally(s, 0, s.window[s.strstart]);\n\n      s.lookahead--;\n      s.strstart++;\n    }\n    if (bflush) {\n      /*** FLUSH_BLOCK(s, 0); ***/\n      flush_block_only(s, false);\n      if (s.strm.avail_out === 0) {\n        return BS_NEED_MORE;\n      }\n      /***/\n    }\n  }\n  s.insert = 0;\n  if (flush === Z_FINISH$3) {\n    /*** FLUSH_BLOCK(s, 1); ***/\n    flush_block_only(s, true);\n    if (s.strm.avail_out === 0) {\n      return BS_FINISH_STARTED;\n    }\n    /***/\n    return BS_FINISH_DONE;\n  }\n  if (s.sym_next) {\n    /*** FLUSH_BLOCK(s, 0); ***/\n    flush_block_only(s, false);\n    if (s.strm.avail_out === 0) {\n      return BS_NEED_MORE;\n    }\n    /***/\n  }\n  return BS_BLOCK_DONE;\n};\n\n/* ===========================================================================\n * For Z_HUFFMAN_ONLY, do not look for matches.  Do not maintain a hash table.\n * (It will be regenerated if this run of deflate switches away from Huffman.)\n */\nconst deflate_huff = (s, flush) => {\n\n  let bflush;             /* set if current block must be flushed */\n\n  for (;;) {\n    /* Make sure that we have a literal to write. */\n    if (s.lookahead === 0) {\n      fill_window(s);\n      if (s.lookahead === 0) {\n        if (flush === Z_NO_FLUSH$2) {\n          return BS_NEED_MORE;\n        }\n        break;      /* flush the current block */\n      }\n    }\n\n    /* Output a literal byte */\n    s.match_length = 0;\n    //Tracevv((stderr,\"%c\", s->window[s->strstart]));\n    /*** _tr_tally_lit(s, s.window[s.strstart], bflush); ***/\n    bflush = _tr_tally(s, 0, s.window[s.strstart]);\n    s.lookahead--;\n    s.strstart++;\n    if (bflush) {\n      /*** FLUSH_BLOCK(s, 0); ***/\n      flush_block_only(s, false);\n      if (s.strm.avail_out === 0) {\n        return BS_NEED_MORE;\n      }\n      /***/\n    }\n  }\n  s.insert = 0;\n  if (flush === Z_FINISH$3) {\n    /*** FLUSH_BLOCK(s, 1); ***/\n    flush_block_only(s, true);\n    if (s.strm.avail_out === 0) {\n      return BS_FINISH_STARTED;\n    }\n    /***/\n    return BS_FINISH_DONE;\n  }\n  if (s.sym_next) {\n    /*** FLUSH_BLOCK(s, 0); ***/\n    flush_block_only(s, false);\n    if (s.strm.avail_out === 0) {\n      return BS_NEED_MORE;\n    }\n    /***/\n  }\n  return BS_BLOCK_DONE;\n};\n\n/* Values for max_lazy_match, good_match and max_chain_length, depending on\n * the desired pack level (0..9). The values given below have been tuned to\n * exclude worst case performance for pathological files. Better values may be\n * found for specific files.\n */\nfunction Config(good_length, max_lazy, nice_length, max_chain, func) {\n\n  this.good_length = good_length;\n  this.max_lazy = max_lazy;\n  this.nice_length = nice_length;\n  this.max_chain = max_chain;\n  this.func = func;\n}\n\nconst configuration_table = [\n  /*      good lazy nice chain */\n  new Config(0, 0, 0, 0, deflate_stored),          /* 0 store only */\n  new Config(4, 4, 8, 4, deflate_fast),            /* 1 max speed, no lazy matches */\n  new Config(4, 5, 16, 8, deflate_fast),           /* 2 */\n  new Config(4, 6, 32, 32, deflate_fast),          /* 3 */\n\n  new Config(4, 4, 16, 16, deflate_slow),          /* 4 lazy matches */\n  new Config(8, 16, 32, 32, deflate_slow),         /* 5 */\n  new Config(8, 16, 128, 128, deflate_slow),       /* 6 */\n  new Config(8, 32, 128, 256, deflate_slow),       /* 7 */\n  new Config(32, 128, 258, 1024, deflate_slow),    /* 8 */\n  new Config(32, 258, 258, 4096, deflate_slow)     /* 9 max compression */\n];\n\n\n/* ===========================================================================\n * Initialize the \"longest match\" routines for a new zlib stream\n */\nconst lm_init = (s) => {\n\n  s.window_size = 2 * s.w_size;\n\n  /*** CLEAR_HASH(s); ***/\n  zero(s.head); // Fill with NIL (= 0);\n\n  /* Set the default configuration parameters:\n   */\n  s.max_lazy_match = configuration_table[s.level].max_lazy;\n  s.good_match = configuration_table[s.level].good_length;\n  s.nice_match = configuration_table[s.level].nice_length;\n  s.max_chain_length = configuration_table[s.level].max_chain;\n\n  s.strstart = 0;\n  s.block_start = 0;\n  s.lookahead = 0;\n  s.insert = 0;\n  s.match_length = s.prev_length = MIN_MATCH - 1;\n  s.match_available = 0;\n  s.ins_h = 0;\n};\n\n\nfunction DeflateState() {\n  this.strm = null;            /* pointer back to this zlib stream */\n  this.status = 0;            /* as the name implies */\n  this.pending_buf = null;      /* output still pending */\n  this.pending_buf_size = 0;  /* size of pending_buf */\n  this.pending_out = 0;       /* next pending byte to output to the stream */\n  this.pending = 0;           /* nb of bytes in the pending buffer */\n  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip */\n  this.gzhead = null;         /* gzip header information to write */\n  this.gzindex = 0;           /* where in extra, name, or comment */\n  this.method = Z_DEFLATED$2; /* can only be DEFLATED */\n  this.last_flush = -1;   /* value of flush param for previous deflate call */\n\n  this.w_size = 0;  /* LZ77 window size (32K by default) */\n  this.w_bits = 0;  /* log2(w_size)  (8..16) */\n  this.w_mask = 0;  /* w_size - 1 */\n\n  this.window = null;\n  /* Sliding window. Input bytes are read into the second half of the window,\n   * and move to the first half later to keep a dictionary of at least wSize\n   * bytes. With this organization, matches are limited to a distance of\n   * wSize-MAX_MATCH bytes, but this ensures that IO is always\n   * performed with a length multiple of the block size.\n   */\n\n  this.window_size = 0;\n  /* Actual size of window: 2*wSize, except when the user input buffer\n   * is directly used as sliding window.\n   */\n\n  this.prev = null;\n  /* Link to older string with same hash index. To limit the size of this\n   * array to 64K, this link is maintained only for the last 32K strings.\n   * An index in this array is thus a window index modulo 32K.\n   */\n\n  this.head = null;   /* Heads of the hash chains or NIL. */\n\n  this.ins_h = 0;       /* hash index of string to be inserted */\n  this.hash_size = 0;   /* number of elements in hash table */\n  this.hash_bits = 0;   /* log2(hash_size) */\n  this.hash_mask = 0;   /* hash_size-1 */\n\n  this.hash_shift = 0;\n  /* Number of bits by which ins_h must be shifted at each input\n   * step. It must be such that after MIN_MATCH steps, the oldest\n   * byte no longer takes part in the hash key, that is:\n   *   hash_shift * MIN_MATCH >= hash_bits\n   */\n\n  this.block_start = 0;\n  /* Window position at the beginning of the current output block. Gets\n   * negative when the window is moved backwards.\n   */\n\n  this.match_length = 0;      /* length of best match */\n  this.prev_match = 0;        /* previous match */\n  this.match_available = 0;   /* set if previous match exists */\n  this.strstart = 0;          /* start of string to insert */\n  this.match_start = 0;       /* start of matching string */\n  this.lookahead = 0;         /* number of valid bytes ahead in window */\n\n  this.prev_length = 0;\n  /* Length of the best match at previous step. Matches not greater than this\n   * are discarded. This is used in the lazy match evaluation.\n   */\n\n  this.max_chain_length = 0;\n  /* To speed up deflation, hash chains are never searched beyond this\n   * length.  A higher limit improves compression ratio but degrades the\n   * speed.\n   */\n\n  this.max_lazy_match = 0;\n  /* Attempt to find a better match only when the current match is strictly\n   * smaller than this value. This mechanism is used only for compression\n   * levels >= 4.\n   */\n  // That's alias to max_lazy_match, don't use directly\n  //this.max_insert_length = 0;\n  /* Insert new strings in the hash table only if the match length is not\n   * greater than this length. This saves time but degrades compression.\n   * max_insert_length is used only for compression levels <= 3.\n   */\n\n  this.level = 0;     /* compression level (1..9) */\n  this.strategy = 0;  /* favor or force Huffman coding*/\n\n  this.good_match = 0;\n  /* Use a faster search when the previous match is longer than this */\n\n  this.nice_match = 0; /* Stop searching when current match exceeds this */\n\n              /* used by trees.c: */\n\n  /* Didn't use ct_data typedef below to suppress compiler warning */\n\n  // struct ct_data_s dyn_ltree[HEAP_SIZE];   /* literal and length tree */\n  // struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */\n  // struct ct_data_s bl_tree[2*BL_CODES+1];  /* Huffman tree for bit lengths */\n\n  // Use flat array of DOUBLE size, with interleaved fata,\n  // because JS does not support effective\n  this.dyn_ltree  = new Uint16Array(HEAP_SIZE * 2);\n  this.dyn_dtree  = new Uint16Array((2 * D_CODES + 1) * 2);\n  this.bl_tree    = new Uint16Array((2 * BL_CODES + 1) * 2);\n  zero(this.dyn_ltree);\n  zero(this.dyn_dtree);\n  zero(this.bl_tree);\n\n  this.l_desc   = null;         /* desc. for literal tree */\n  this.d_desc   = null;         /* desc. for distance tree */\n  this.bl_desc  = null;         /* desc. for bit length tree */\n\n  //ush bl_count[MAX_BITS+1];\n  this.bl_count = new Uint16Array(MAX_BITS + 1);\n  /* number of codes at each bit length for an optimal tree */\n\n  //int heap[2*L_CODES+1];      /* heap used to build the Huffman trees */\n  this.heap = new Uint16Array(2 * L_CODES + 1);  /* heap used to build the Huffman trees */\n  zero(this.heap);\n\n  this.heap_len = 0;               /* number of elements in the heap */\n  this.heap_max = 0;               /* element of largest frequency */\n  /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.\n   * The same heap array is used to build all trees.\n   */\n\n  this.depth = new Uint16Array(2 * L_CODES + 1); //uch depth[2*L_CODES+1];\n  zero(this.depth);\n  /* Depth of each subtree used as tie breaker for trees of equal frequency\n   */\n\n  this.sym_buf = 0;        /* buffer for distances and literals/lengths */\n\n  this.lit_bufsize = 0;\n  /* Size of match buffer for literals/lengths.  There are 4 reasons for\n   * limiting lit_bufsize to 64K:\n   *   - frequencies can be kept in 16 bit counters\n   *   - if compression is not successful for the first block, all input\n   *     data is still in the window so we can still emit a stored block even\n   *     when input comes from standard input.  (This can also be done for\n   *     all blocks if lit_bufsize is not greater than 32K.)\n   *   - if compression is not successful for a file smaller than 64K, we can\n   *     even emit a stored file instead of a stored block (saving 5 bytes).\n   *     This is applicable only for zip (not gzip or zlib).\n   *   - creating new Huffman trees less frequently may not provide fast\n   *     adaptation to changes in the input data statistics. (Take for\n   *     example a binary file with poorly compressible code followed by\n   *     a highly compressible string table.) Smaller buffer sizes give\n   *     fast adaptation but have of course the overhead of transmitting\n   *     trees more frequently.\n   *   - I can't count above 4\n   */\n\n  this.sym_next = 0;      /* running index in sym_buf */\n  this.sym_end = 0;       /* symbol table full when sym_next reaches this */\n\n  this.opt_len = 0;       /* bit length of current block with optimal trees */\n  this.static_len = 0;    /* bit length of current block with static trees */\n  this.matches = 0;       /* number of string matches in current block */\n  this.insert = 0;        /* bytes at end of window left to insert */\n\n\n  this.bi_buf = 0;\n  /* Output buffer. bits are inserted starting at the bottom (least\n   * significant bits).\n   */\n  this.bi_valid = 0;\n  /* Number of valid bits in bi_buf.  All bits above the last valid bit\n   * are always zero.\n   */\n\n  // Used for window memory init. We safely ignore it for JS. That makes\n  // sense only for pointers and memory check tools.\n  //this.high_water = 0;\n  /* High water mark offset in window for initialized bytes -- bytes above\n   * this are set to zero in order to avoid memory check warnings when\n   * longest match routines access bytes past the input.  This is then\n   * updated to the new high water mark.\n   */\n}\n\n\n/* =========================================================================\n * Check for a valid deflate stream state. Return 0 if ok, 1 if not.\n */\nconst deflateStateCheck = (strm) => {\n\n  if (!strm) {\n    return 1;\n  }\n  const s = strm.state;\n  if (!s || s.strm !== strm || (s.status !== INIT_STATE &&\n//#ifdef GZIP\n                                s.status !== GZIP_STATE &&\n//#endif\n                                s.status !== EXTRA_STATE &&\n                                s.status !== NAME_STATE &&\n                                s.status !== COMMENT_STATE &&\n                                s.status !== HCRC_STATE &&\n                                s.status !== BUSY_STATE &&\n                                s.status !== FINISH_STATE)) {\n    return 1;\n  }\n  return 0;\n};\n\n\nconst deflateResetKeep = (strm) => {\n\n  if (deflateStateCheck(strm)) {\n    return err(strm, Z_STREAM_ERROR$2);\n  }\n\n  strm.total_in = strm.total_out = 0;\n  strm.data_type = Z_UNKNOWN;\n\n  const s = strm.state;\n  s.pending = 0;\n  s.pending_out = 0;\n\n  if (s.wrap < 0) {\n    s.wrap = -s.wrap;\n    /* was made negative by deflate(..., Z_FINISH); */\n  }\n  s.status =\n//#ifdef GZIP\n    s.wrap === 2 ? GZIP_STATE :\n//#endif\n    s.wrap ? INIT_STATE : BUSY_STATE;\n  strm.adler = (s.wrap === 2) ?\n    0  // crc32(0, Z_NULL, 0)\n  :\n    1; // adler32(0, Z_NULL, 0)\n  s.last_flush = -2;\n  _tr_init(s);\n  return Z_OK$3;\n};\n\n\nconst deflateReset = (strm) => {\n\n  const ret = deflateResetKeep(strm);\n  if (ret === Z_OK$3) {\n    lm_init(strm.state);\n  }\n  return ret;\n};\n\n\nconst deflateSetHeader = (strm, head) => {\n\n  if (deflateStateCheck(strm) || strm.state.wrap !== 2) {\n    return Z_STREAM_ERROR$2;\n  }\n  strm.state.gzhead = head;\n  return Z_OK$3;\n};\n\n\nconst deflateInit2 = (strm, level, method, windowBits, memLevel, strategy) => {\n\n  if (!strm) { // === Z_NULL\n    return Z_STREAM_ERROR$2;\n  }\n  let wrap = 1;\n\n  if (level === Z_DEFAULT_COMPRESSION$1) {\n    level = 6;\n  }\n\n  if (windowBits < 0) { /* suppress zlib wrapper */\n    wrap = 0;\n    windowBits = -windowBits;\n  }\n\n  else if (windowBits > 15) {\n    wrap = 2;           /* write gzip wrapper instead */\n    windowBits -= 16;\n  }\n\n\n  if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method !== Z_DEFLATED$2 ||\n    windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||\n    strategy < 0 || strategy > Z_FIXED || (windowBits === 8 && wrap !== 1)) {\n    return err(strm, Z_STREAM_ERROR$2);\n  }\n\n\n  if (windowBits === 8) {\n    windowBits = 9;\n  }\n  /* until 256-byte window bug fixed */\n\n  const s = new DeflateState();\n\n  strm.state = s;\n  s.strm = strm;\n  s.status = INIT_STATE;     /* to pass state test in deflateReset() */\n\n  s.wrap = wrap;\n  s.gzhead = null;\n  s.w_bits = windowBits;\n  s.w_size = 1 << s.w_bits;\n  s.w_mask = s.w_size - 1;\n\n  s.hash_bits = memLevel + 7;\n  s.hash_size = 1 << s.hash_bits;\n  s.hash_mask = s.hash_size - 1;\n  s.hash_shift = ~~((s.hash_bits + MIN_MATCH - 1) / MIN_MATCH);\n\n  s.window = new Uint8Array(s.w_size * 2);\n  s.head = new Uint16Array(s.hash_size);\n  s.prev = new Uint16Array(s.w_size);\n\n  // Don't need mem init magic for JS.\n  //s.high_water = 0;  /* nothing written to s->window yet */\n\n  s.lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */\n\n  /* We overlay pending_buf and sym_buf. This works since the average size\n   * for length/distance pairs over any compressed block is assured to be 31\n   * bits or less.\n   *\n   * Analysis: The longest fixed codes are a length code of 8 bits plus 5\n   * extra bits, for lengths 131 to 257. The longest fixed distance codes are\n   * 5 bits plus 13 extra bits, for distances 16385 to 32768. The longest\n   * possible fixed-codes length/distance pair is then 31 bits total.\n   *\n   * sym_buf starts one-fourth of the way into pending_buf. So there are\n   * three bytes in sym_buf for every four bytes in pending_buf. Each symbol\n   * in sym_buf is three bytes -- two for the distance and one for the\n   * literal/length. As each symbol is consumed, the pointer to the next\n   * sym_buf value to read moves forward three bytes. From that symbol, up to\n   * 31 bits are written to pending_buf. The closest the written pending_buf\n   * bits gets to the next sym_buf symbol to read is just before the last\n   * code is written. At that time, 31*(n-2) bits have been written, just\n   * after 24*(n-2) bits have been consumed from sym_buf. sym_buf starts at\n   * 8*n bits into pending_buf. (Note that the symbol buffer fills when n-1\n   * symbols are written.) The closest the writing gets to what is unread is\n   * then n+14 bits. Here n is lit_bufsize, which is 16384 by default, and\n   * can range from 128 to 32768.\n   *\n   * Therefore, at a minimum, there are 142 bits of space between what is\n   * written and what is read in the overlain buffers, so the symbols cannot\n   * be overwritten by the compressed data. That space is actually 139 bits,\n   * due to the three-bit fixed-code block header.\n   *\n   * That covers the case where either Z_FIXED is specified, forcing fixed\n   * codes, or when the use of fixed codes is chosen, because that choice\n   * results in a smaller compressed block than dynamic codes. That latter\n   * condition then assures that the above analysis also covers all dynamic\n   * blocks. A dynamic-code block will only be chosen to be emitted if it has\n   * fewer bits than a fixed-code block would for the same set of symbols.\n   * Therefore its average symbol length is assured to be less than 31. So\n   * the compressed data for a dynamic block also cannot overwrite the\n   * symbols from which it is being constructed.\n   */\n\n  s.pending_buf_size = s.lit_bufsize * 4;\n  s.pending_buf = new Uint8Array(s.pending_buf_size);\n\n  // It is offset from `s.pending_buf` (size is `s.lit_bufsize * 2`)\n  //s->sym_buf = s->pending_buf + s->lit_bufsize;\n  s.sym_buf = s.lit_bufsize;\n\n  //s->sym_end = (s->lit_bufsize - 1) * 3;\n  s.sym_end = (s.lit_bufsize - 1) * 3;\n  /* We avoid equality with lit_bufsize*3 because of wraparound at 64K\n   * on 16 bit machines and because stored blocks are restricted to\n   * 64K-1 bytes.\n   */\n\n  s.level = level;\n  s.strategy = strategy;\n  s.method = method;\n\n  return deflateReset(strm);\n};\n\nconst deflateInit = (strm, level) => {\n\n  return deflateInit2(strm, level, Z_DEFLATED$2, MAX_WBITS$1, DEF_MEM_LEVEL, Z_DEFAULT_STRATEGY$1);\n};\n\n\n/* ========================================================================= */\nconst deflate$2 = (strm, flush) => {\n\n  if (deflateStateCheck(strm) || flush > Z_BLOCK$1 || flush < 0) {\n    return strm ? err(strm, Z_STREAM_ERROR$2) : Z_STREAM_ERROR$2;\n  }\n\n  const s = strm.state;\n\n  if (!strm.output ||\n      (strm.avail_in !== 0 && !strm.input) ||\n      (s.status === FINISH_STATE && flush !== Z_FINISH$3)) {\n    return err(strm, (strm.avail_out === 0) ? Z_BUF_ERROR$1 : Z_STREAM_ERROR$2);\n  }\n\n  const old_flush = s.last_flush;\n  s.last_flush = flush;\n\n  /* Flush as much pending output as possible */\n  if (s.pending !== 0) {\n    flush_pending(strm);\n    if (strm.avail_out === 0) {\n      /* Since avail_out is 0, deflate will be called again with\n       * more output space, but possibly with both pending and\n       * avail_in equal to zero. There won't be anything to do,\n       * but this is not an error situation so make sure we\n       * return OK instead of BUF_ERROR at next call of deflate:\n       */\n      s.last_flush = -1;\n      return Z_OK$3;\n    }\n\n    /* Make sure there is something to do and avoid duplicate consecutive\n     * flushes. For repeated and useless calls with Z_FINISH, we keep\n     * returning Z_STREAM_END instead of Z_BUF_ERROR.\n     */\n  } else if (strm.avail_in === 0 && rank(flush) <= rank(old_flush) &&\n    flush !== Z_FINISH$3) {\n    return err(strm, Z_BUF_ERROR$1);\n  }\n\n  /* User must not provide more input after the first FINISH: */\n  if (s.status === FINISH_STATE && strm.avail_in !== 0) {\n    return err(strm, Z_BUF_ERROR$1);\n  }\n\n  /* Write the header */\n  if (s.status === INIT_STATE && s.wrap === 0) {\n    s.status = BUSY_STATE;\n  }\n  if (s.status === INIT_STATE) {\n    /* zlib header */\n    let header = (Z_DEFLATED$2 + ((s.w_bits - 8) << 4)) << 8;\n    let level_flags = -1;\n\n    if (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2) {\n      level_flags = 0;\n    } else if (s.level < 6) {\n      level_flags = 1;\n    } else if (s.level === 6) {\n      level_flags = 2;\n    } else {\n      level_flags = 3;\n    }\n    header |= (level_flags << 6);\n    if (s.strstart !== 0) { header |= PRESET_DICT; }\n    header += 31 - (header % 31);\n\n    putShortMSB(s, header);\n\n    /* Save the adler32 of the preset dictionary: */\n    if (s.strstart !== 0) {\n      putShortMSB(s, strm.adler >>> 16);\n      putShortMSB(s, strm.adler & 0xffff);\n    }\n    strm.adler = 1; // adler32(0L, Z_NULL, 0);\n    s.status = BUSY_STATE;\n\n    /* Compression must start with an empty pending buffer */\n    flush_pending(strm);\n    if (s.pending !== 0) {\n      s.last_flush = -1;\n      return Z_OK$3;\n    }\n  }\n//#ifdef GZIP\n  if (s.status === GZIP_STATE) {\n    /* gzip header */\n    strm.adler = 0;  //crc32(0L, Z_NULL, 0);\n    put_byte(s, 31);\n    put_byte(s, 139);\n    put_byte(s, 8);\n    if (!s.gzhead) { // s->gzhead == Z_NULL\n      put_byte(s, 0);\n      put_byte(s, 0);\n      put_byte(s, 0);\n      put_byte(s, 0);\n      put_byte(s, 0);\n      put_byte(s, s.level === 9 ? 2 :\n                  (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?\n                   4 : 0));\n      put_byte(s, OS_CODE);\n      s.status = BUSY_STATE;\n\n      /* Compression must start with an empty pending buffer */\n      flush_pending(strm);\n      if (s.pending !== 0) {\n        s.last_flush = -1;\n        return Z_OK$3;\n      }\n    }\n    else {\n      put_byte(s, (s.gzhead.text ? 1 : 0) +\n                  (s.gzhead.hcrc ? 2 : 0) +\n                  (!s.gzhead.extra ? 0 : 4) +\n                  (!s.gzhead.name ? 0 : 8) +\n                  (!s.gzhead.comment ? 0 : 16)\n      );\n      put_byte(s, s.gzhead.time & 0xff);\n      put_byte(s, (s.gzhead.time >> 8) & 0xff);\n      put_byte(s, (s.gzhead.time >> 16) & 0xff);\n      put_byte(s, (s.gzhead.time >> 24) & 0xff);\n      put_byte(s, s.level === 9 ? 2 :\n                  (s.strategy >= Z_HUFFMAN_ONLY || s.level < 2 ?\n                   4 : 0));\n      put_byte(s, s.gzhead.os & 0xff);\n      if (s.gzhead.extra && s.gzhead.extra.length) {\n        put_byte(s, s.gzhead.extra.length & 0xff);\n        put_byte(s, (s.gzhead.extra.length >> 8) & 0xff);\n      }\n      if (s.gzhead.hcrc) {\n        strm.adler = crc32_1(strm.adler, s.pending_buf, s.pending, 0);\n      }\n      s.gzindex = 0;\n      s.status = EXTRA_STATE;\n    }\n  }\n  if (s.status === EXTRA_STATE) {\n    if (s.gzhead.extra/* != Z_NULL*/) {\n      let beg = s.pending;   /* start of bytes to update crc */\n      let left = (s.gzhead.extra.length & 0xffff) - s.gzindex;\n      while (s.pending + left > s.pending_buf_size) {\n        let copy = s.pending_buf_size - s.pending;\n        // zmemcpy(s.pending_buf + s.pending,\n        //    s.gzhead.extra + s.gzindex, copy);\n        s.pending_buf.set(s.gzhead.extra.subarray(s.gzindex, s.gzindex + copy), s.pending);\n        s.pending = s.pending_buf_size;\n        //--- HCRC_UPDATE(beg) ---//\n        if (s.gzhead.hcrc && s.pending > beg) {\n          strm.adler = crc32_1(strm.adler, s.pending_buf, s.pending - beg, beg);\n        }\n        //---//\n        s.gzindex += copy;\n        flush_pending(strm);\n        if (s.pending !== 0) {\n          s.last_flush = -1;\n          return Z_OK$3;\n        }\n        beg = 0;\n        left -= copy;\n      }\n      // JS specific: s.gzhead.extra may be TypedArray or Array for backward compatibility\n      //              TypedArray.slice and TypedArray.from don't exist in IE10-IE11\n      let gzhead_extra = new Uint8Array(s.gzhead.extra);\n      // zmemcpy(s->pending_buf + s->pending,\n      //     s->gzhead->extra + s->gzindex, left);\n      s.pending_buf.set(gzhead_extra.subarray(s.gzindex, s.gzindex + left), s.pending);\n      s.pending += left;\n      //--- HCRC_UPDATE(beg) ---//\n      if (s.gzhead.hcrc && s.pending > beg) {\n        strm.adler = crc32_1(strm.adler, s.pending_buf, s.pending - beg, beg);\n      }\n      //---//\n      s.gzindex = 0;\n    }\n    s.status = NAME_STATE;\n  }\n  if (s.status === NAME_STATE) {\n    if (s.gzhead.name/* != Z_NULL*/) {\n      let beg = s.pending;   /* start of bytes to update crc */\n      let val;\n      do {\n        if (s.pending === s.pending_buf_size) {\n          //--- HCRC_UPDATE(beg) ---//\n          if (s.gzhead.hcrc && s.pending > beg) {\n            strm.adler = crc32_1(strm.adler, s.pending_buf, s.pending - beg, beg);\n          }\n          //---//\n          flush_pending(strm);\n          if (s.pending !== 0) {\n            s.last_flush = -1;\n            return Z_OK$3;\n          }\n          beg = 0;\n        }\n        // JS specific: little magic to add zero terminator to end of string\n        if (s.gzindex < s.gzhead.name.length) {\n          val = s.gzhead.name.charCodeAt(s.gzindex++) & 0xff;\n        } else {\n          val = 0;\n        }\n        put_byte(s, val);\n      } while (val !== 0);\n      //--- HCRC_UPDATE(beg) ---//\n      if (s.gzhead.hcrc && s.pending > beg) {\n        strm.adler = crc32_1(strm.adler, s.pending_buf, s.pending - beg, beg);\n      }\n      //---//\n      s.gzindex = 0;\n    }\n    s.status = COMMENT_STATE;\n  }\n  if (s.status === COMMENT_STATE) {\n    if (s.gzhead.comment/* != Z_NULL*/) {\n      let beg = s.pending;   /* start of bytes to update crc */\n      let val;\n      do {\n        if (s.pending === s.pending_buf_size) {\n          //--- HCRC_UPDATE(beg) ---//\n          if (s.gzhead.hcrc && s.pending > beg) {\n            strm.adler = crc32_1(strm.adler, s.pending_buf, s.pending - beg, beg);\n          }\n          //---//\n          flush_pending(strm);\n          if (s.pending !== 0) {\n            s.last_flush = -1;\n            return Z_OK$3;\n          }\n          beg = 0;\n        }\n        // JS specific: little magic to add zero terminator to end of string\n        if (s.gzindex < s.gzhead.comment.length) {\n          val = s.gzhead.comment.charCodeAt(s.gzindex++) & 0xff;\n        } else {\n          val = 0;\n        }\n        put_byte(s, val);\n      } while (val !== 0);\n      //--- HCRC_UPDATE(beg) ---//\n      if (s.gzhead.hcrc && s.pending > beg) {\n        strm.adler = crc32_1(strm.adler, s.pending_buf, s.pending - beg, beg);\n      }\n      //---//\n    }\n    s.status = HCRC_STATE;\n  }\n  if (s.status === HCRC_STATE) {\n    if (s.gzhead.hcrc) {\n      if (s.pending + 2 > s.pending_buf_size) {\n        flush_pending(strm);\n        if (s.pending !== 0) {\n          s.last_flush = -1;\n          return Z_OK$3;\n        }\n      }\n      put_byte(s, strm.adler & 0xff);\n      put_byte(s, (strm.adler >> 8) & 0xff);\n      strm.adler = 0; //crc32(0L, Z_NULL, 0);\n    }\n    s.status = BUSY_STATE;\n\n    /* Compression must start with an empty pending buffer */\n    flush_pending(strm);\n    if (s.pending !== 0) {\n      s.last_flush = -1;\n      return Z_OK$3;\n    }\n  }\n//#endif\n\n  /* Start a new block or continue the current one.\n   */\n  if (strm.avail_in !== 0 || s.lookahead !== 0 ||\n    (flush !== Z_NO_FLUSH$2 && s.status !== FINISH_STATE)) {\n    let bstate = s.level === 0 ? deflate_stored(s, flush) :\n                 s.strategy === Z_HUFFMAN_ONLY ? deflate_huff(s, flush) :\n                 s.strategy === Z_RLE ? deflate_rle(s, flush) :\n                 configuration_table[s.level].func(s, flush);\n\n    if (bstate === BS_FINISH_STARTED || bstate === BS_FINISH_DONE) {\n      s.status = FINISH_STATE;\n    }\n    if (bstate === BS_NEED_MORE || bstate === BS_FINISH_STARTED) {\n      if (strm.avail_out === 0) {\n        s.last_flush = -1;\n        /* avoid BUF_ERROR next call, see above */\n      }\n      return Z_OK$3;\n      /* If flush != Z_NO_FLUSH && avail_out == 0, the next call\n       * of deflate should use the same flush parameter to make sure\n       * that the flush is complete. So we don't have to output an\n       * empty block here, this will be done at next call. This also\n       * ensures that for a very small output buffer, we emit at most\n       * one empty block.\n       */\n    }\n    if (bstate === BS_BLOCK_DONE) {\n      if (flush === Z_PARTIAL_FLUSH) {\n        _tr_align(s);\n      }\n      else if (flush !== Z_BLOCK$1) { /* FULL_FLUSH or SYNC_FLUSH */\n\n        _tr_stored_block(s, 0, 0, false);\n        /* For a full flush, this empty block will be recognized\n         * as a special marker by inflate_sync().\n         */\n        if (flush === Z_FULL_FLUSH$1) {\n          /*** CLEAR_HASH(s); ***/             /* forget history */\n          zero(s.head); // Fill with NIL (= 0);\n\n          if (s.lookahead === 0) {\n            s.strstart = 0;\n            s.block_start = 0;\n            s.insert = 0;\n          }\n        }\n      }\n      flush_pending(strm);\n      if (strm.avail_out === 0) {\n        s.last_flush = -1; /* avoid BUF_ERROR at next call, see above */\n        return Z_OK$3;\n      }\n    }\n  }\n\n  if (flush !== Z_FINISH$3) { return Z_OK$3; }\n  if (s.wrap <= 0) { return Z_STREAM_END$3; }\n\n  /* Write the trailer */\n  if (s.wrap === 2) {\n    put_byte(s, strm.adler & 0xff);\n    put_byte(s, (strm.adler >> 8) & 0xff);\n    put_byte(s, (strm.adler >> 16) & 0xff);\n    put_byte(s, (strm.adler >> 24) & 0xff);\n    put_byte(s, strm.total_in & 0xff);\n    put_byte(s, (strm.total_in >> 8) & 0xff);\n    put_byte(s, (strm.total_in >> 16) & 0xff);\n    put_byte(s, (strm.total_in >> 24) & 0xff);\n  }\n  else\n  {\n    putShortMSB(s, strm.adler >>> 16);\n    putShortMSB(s, strm.adler & 0xffff);\n  }\n\n  flush_pending(strm);\n  /* If avail_out is zero, the application will call deflate again\n   * to flush the rest.\n   */\n  if (s.wrap > 0) { s.wrap = -s.wrap; }\n  /* write the trailer only once! */\n  return s.pending !== 0 ? Z_OK$3 : Z_STREAM_END$3;\n};\n\n\nconst deflateEnd = (strm) => {\n\n  if (deflateStateCheck(strm)) {\n    return Z_STREAM_ERROR$2;\n  }\n\n  const status = strm.state.status;\n\n  strm.state = null;\n\n  return status === BUSY_STATE ? err(strm, Z_DATA_ERROR$2) : Z_OK$3;\n};\n\n\n/* =========================================================================\n * Initializes the compression dictionary from the given byte\n * sequence without producing any compressed output.\n */\nconst deflateSetDictionary = (strm, dictionary) => {\n\n  let dictLength = dictionary.length;\n\n  if (deflateStateCheck(strm)) {\n    return Z_STREAM_ERROR$2;\n  }\n\n  const s = strm.state;\n  const wrap = s.wrap;\n\n  if (wrap === 2 || (wrap === 1 && s.status !== INIT_STATE) || s.lookahead) {\n    return Z_STREAM_ERROR$2;\n  }\n\n  /* when using zlib wrappers, compute Adler-32 for provided dictionary */\n  if (wrap === 1) {\n    /* adler32(strm->adler, dictionary, dictLength); */\n    strm.adler = adler32_1(strm.adler, dictionary, dictLength, 0);\n  }\n\n  s.wrap = 0;   /* avoid computing Adler-32 in read_buf */\n\n  /* if dictionary would fill window, just replace the history */\n  if (dictLength >= s.w_size) {\n    if (wrap === 0) {            /* already empty otherwise */\n      /*** CLEAR_HASH(s); ***/\n      zero(s.head); // Fill with NIL (= 0);\n      s.strstart = 0;\n      s.block_start = 0;\n      s.insert = 0;\n    }\n    /* use the tail */\n    // dictionary = dictionary.slice(dictLength - s.w_size);\n    let tmpDict = new Uint8Array(s.w_size);\n    tmpDict.set(dictionary.subarray(dictLength - s.w_size, dictLength), 0);\n    dictionary = tmpDict;\n    dictLength = s.w_size;\n  }\n  /* insert dictionary into window and hash */\n  const avail = strm.avail_in;\n  const next = strm.next_in;\n  const input = strm.input;\n  strm.avail_in = dictLength;\n  strm.next_in = 0;\n  strm.input = dictionary;\n  fill_window(s);\n  while (s.lookahead >= MIN_MATCH) {\n    let str = s.strstart;\n    let n = s.lookahead - (MIN_MATCH - 1);\n    do {\n      /* UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]); */\n      s.ins_h = HASH(s, s.ins_h, s.window[str + MIN_MATCH - 1]);\n\n      s.prev[str & s.w_mask] = s.head[s.ins_h];\n\n      s.head[s.ins_h] = str;\n      str++;\n    } while (--n);\n    s.strstart = str;\n    s.lookahead = MIN_MATCH - 1;\n    fill_window(s);\n  }\n  s.strstart += s.lookahead;\n  s.block_start = s.strstart;\n  s.insert = s.lookahead;\n  s.lookahead = 0;\n  s.match_length = s.prev_length = MIN_MATCH - 1;\n  s.match_available = 0;\n  strm.next_in = next;\n  strm.input = input;\n  strm.avail_in = avail;\n  s.wrap = wrap;\n  return Z_OK$3;\n};\n\n\nvar deflateInit_1 = deflateInit;\nvar deflateInit2_1 = deflateInit2;\nvar deflateReset_1 = deflateReset;\nvar deflateResetKeep_1 = deflateResetKeep;\nvar deflateSetHeader_1 = deflateSetHeader;\nvar deflate_2$1 = deflate$2;\nvar deflateEnd_1 = deflateEnd;\nvar deflateSetDictionary_1 = deflateSetDictionary;\nvar deflateInfo = 'pako deflate (from Nodeca project)';\n\n/* Not implemented\nmodule.exports.deflateBound = deflateBound;\nmodule.exports.deflateCopy = deflateCopy;\nmodule.exports.deflateGetDictionary = deflateGetDictionary;\nmodule.exports.deflateParams = deflateParams;\nmodule.exports.deflatePending = deflatePending;\nmodule.exports.deflatePrime = deflatePrime;\nmodule.exports.deflateTune = deflateTune;\n*/\n\nvar deflate_1$2 = {\n\tdeflateInit: deflateInit_1,\n\tdeflateInit2: deflateInit2_1,\n\tdeflateReset: deflateReset_1,\n\tdeflateResetKeep: deflateResetKeep_1,\n\tdeflateSetHeader: deflateSetHeader_1,\n\tdeflate: deflate_2$1,\n\tdeflateEnd: deflateEnd_1,\n\tdeflateSetDictionary: deflateSetDictionary_1,\n\tdeflateInfo: deflateInfo\n};\n\nconst _has = (obj, key) => {\n  return Object.prototype.hasOwnProperty.call(obj, key);\n};\n\nvar assign = function (obj /*from1, from2, from3, ...*/) {\n  const sources = Array.prototype.slice.call(arguments, 1);\n  while (sources.length) {\n    const source = sources.shift();\n    if (!source) { continue; }\n\n    if (typeof source !== 'object') {\n      throw new TypeError(source + 'must be non-object');\n    }\n\n    for (const p in source) {\n      if (_has(source, p)) {\n        obj[p] = source[p];\n      }\n    }\n  }\n\n  return obj;\n};\n\n\n// Join array of chunks to single array.\nvar flattenChunks = (chunks) => {\n  // calculate data length\n  let len = 0;\n\n  for (let i = 0, l = chunks.length; i < l; i++) {\n    len += chunks[i].length;\n  }\n\n  // join chunks\n  const result = new Uint8Array(len);\n\n  for (let i = 0, pos = 0, l = chunks.length; i < l; i++) {\n    let chunk = chunks[i];\n    result.set(chunk, pos);\n    pos += chunk.length;\n  }\n\n  return result;\n};\n\nvar common = {\n\tassign: assign,\n\tflattenChunks: flattenChunks\n};\n\n// String encode/decode helpers\n\n\n// Quick check if we can use fast array to bin string conversion\n//\n// - apply(Array) can fail on Android 2.2\n// - apply(Uint8Array) can fail on iOS 5.1 Safari\n//\nlet STR_APPLY_UIA_OK = true;\n\ntry { String.fromCharCode.apply(null, new Uint8Array(1)); } catch (__) { STR_APPLY_UIA_OK = false; }\n\n\n// Table with utf8 lengths (calculated by first byte of sequence)\n// Note, that 5 & 6-byte values and some 4-byte values can not be represented in JS,\n// because max possible codepoint is 0x10ffff\nconst _utf8len = new Uint8Array(256);\nfor (let q = 0; q < 256; q++) {\n  _utf8len[q] = (q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1);\n}\n_utf8len[254] = _utf8len[254] = 1; // Invalid sequence start\n\n\n// convert string to array (typed, when possible)\nvar string2buf = (str) => {\n  if (typeof TextEncoder === 'function' && TextEncoder.prototype.encode) {\n    return new TextEncoder().encode(str);\n  }\n\n  let buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;\n\n  // count binary size\n  for (m_pos = 0; m_pos < str_len; m_pos++) {\n    c = str.charCodeAt(m_pos);\n    if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) {\n      c2 = str.charCodeAt(m_pos + 1);\n      if ((c2 & 0xfc00) === 0xdc00) {\n        c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);\n        m_pos++;\n      }\n    }\n    buf_len += c < 0x80 ? 1 : c < 0x800 ? 2 : c < 0x10000 ? 3 : 4;\n  }\n\n  // allocate buffer\n  buf = new Uint8Array(buf_len);\n\n  // convert\n  for (i = 0, m_pos = 0; i < buf_len; m_pos++) {\n    c = str.charCodeAt(m_pos);\n    if ((c & 0xfc00) === 0xd800 && (m_pos + 1 < str_len)) {\n      c2 = str.charCodeAt(m_pos + 1);\n      if ((c2 & 0xfc00) === 0xdc00) {\n        c = 0x10000 + ((c - 0xd800) << 10) + (c2 - 0xdc00);\n        m_pos++;\n      }\n    }\n    if (c < 0x80) {\n      /* one byte */\n      buf[i++] = c;\n    } else if (c < 0x800) {\n      /* two bytes */\n      buf[i++] = 0xC0 | (c >>> 6);\n      buf[i++] = 0x80 | (c & 0x3f);\n    } else if (c < 0x10000) {\n      /* three bytes */\n      buf[i++] = 0xE0 | (c >>> 12);\n      buf[i++] = 0x80 | (c >>> 6 & 0x3f);\n      buf[i++] = 0x80 | (c & 0x3f);\n    } else {\n      /* four bytes */\n      buf[i++] = 0xf0 | (c >>> 18);\n      buf[i++] = 0x80 | (c >>> 12 & 0x3f);\n      buf[i++] = 0x80 | (c >>> 6 & 0x3f);\n      buf[i++] = 0x80 | (c & 0x3f);\n    }\n  }\n\n  return buf;\n};\n\n// Helper\nconst buf2binstring = (buf, len) => {\n  // On Chrome, the arguments in a function call that are allowed is `65534`.\n  // If the length of the buffer is smaller than that, we can use this optimization,\n  // otherwise we will take a slower path.\n  if (len < 65534) {\n    if (buf.subarray && STR_APPLY_UIA_OK) {\n      return String.fromCharCode.apply(null, buf.length === len ? buf : buf.subarray(0, len));\n    }\n  }\n\n  let result = '';\n  for (let i = 0; i < len; i++) {\n    result += String.fromCharCode(buf[i]);\n  }\n  return result;\n};\n\n\n// convert array to string\nvar buf2string = (buf, max) => {\n  const len = max || buf.length;\n\n  if (typeof TextDecoder === 'function' && TextDecoder.prototype.decode) {\n    return new TextDecoder().decode(buf.subarray(0, max));\n  }\n\n  let i, out;\n\n  // Reserve max possible length (2 words per char)\n  // NB: by unknown reasons, Array is significantly faster for\n  //     String.fromCharCode.apply than Uint16Array.\n  const utf16buf = new Array(len * 2);\n\n  for (out = 0, i = 0; i < len;) {\n    let c = buf[i++];\n    // quick process ascii\n    if (c < 0x80) { utf16buf[out++] = c; continue; }\n\n    let c_len = _utf8len[c];\n    // skip 5 & 6 byte codes\n    if (c_len > 4) { utf16buf[out++] = 0xfffd; i += c_len - 1; continue; }\n\n    // apply mask on first byte\n    c &= c_len === 2 ? 0x1f : c_len === 3 ? 0x0f : 0x07;\n    // join the rest\n    while (c_len > 1 && i < len) {\n      c = (c << 6) | (buf[i++] & 0x3f);\n      c_len--;\n    }\n\n    // terminated by end of string?\n    if (c_len > 1) { utf16buf[out++] = 0xfffd; continue; }\n\n    if (c < 0x10000) {\n      utf16buf[out++] = c;\n    } else {\n      c -= 0x10000;\n      utf16buf[out++] = 0xd800 | ((c >> 10) & 0x3ff);\n      utf16buf[out++] = 0xdc00 | (c & 0x3ff);\n    }\n  }\n\n  return buf2binstring(utf16buf, out);\n};\n\n\n// Calculate max possible position in utf8 buffer,\n// that will not break sequence. If that's not possible\n// - (very small limits) return max size as is.\n//\n// buf[] - utf8 bytes array\n// max   - length limit (mandatory);\nvar utf8border = (buf, max) => {\n\n  max = max || buf.length;\n  if (max > buf.length) { max = buf.length; }\n\n  // go back from last position, until start of sequence found\n  let pos = max - 1;\n  while (pos >= 0 && (buf[pos] & 0xC0) === 0x80) { pos--; }\n\n  // Very small and broken sequence,\n  // return max, because we should return something anyway.\n  if (pos < 0) { return max; }\n\n  // If we came to start of buffer - that means buffer is too small,\n  // return max too.\n  if (pos === 0) { return max; }\n\n  return (pos + _utf8len[buf[pos]] > max) ? pos : max;\n};\n\nvar strings = {\n\tstring2buf: string2buf,\n\tbuf2string: buf2string,\n\tutf8border: utf8border\n};\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nfunction ZStream() {\n  /* next input byte */\n  this.input = null; // JS specific, because we have no pointers\n  this.next_in = 0;\n  /* number of bytes available at input */\n  this.avail_in = 0;\n  /* total number of input bytes read so far */\n  this.total_in = 0;\n  /* next output byte should be put there */\n  this.output = null; // JS specific, because we have no pointers\n  this.next_out = 0;\n  /* remaining free space at output */\n  this.avail_out = 0;\n  /* total number of bytes output so far */\n  this.total_out = 0;\n  /* last error message, NULL if no error */\n  this.msg = ''/*Z_NULL*/;\n  /* not visible by applications */\n  this.state = null;\n  /* best guess about the data type: binary or text */\n  this.data_type = 2/*Z_UNKNOWN*/;\n  /* adler32 value of the uncompressed data */\n  this.adler = 0;\n}\n\nvar zstream = ZStream;\n\nconst toString$1 = Object.prototype.toString;\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\nconst {\n  Z_NO_FLUSH: Z_NO_FLUSH$1, Z_SYNC_FLUSH, Z_FULL_FLUSH, Z_FINISH: Z_FINISH$2,\n  Z_OK: Z_OK$2, Z_STREAM_END: Z_STREAM_END$2,\n  Z_DEFAULT_COMPRESSION,\n  Z_DEFAULT_STRATEGY,\n  Z_DEFLATED: Z_DEFLATED$1\n} = constants$2;\n\n/* ===========================================================================*/\n\n\n/**\n * class Deflate\n *\n * Generic JS-style wrapper for zlib calls. If you don't need\n * streaming behaviour - use more simple functions: [[deflate]],\n * [[deflateRaw]] and [[gzip]].\n **/\n\n/* internal\n * Deflate.chunks -> Array\n *\n * Chunks of output data, if [[Deflate#onData]] not overridden.\n **/\n\n/**\n * Deflate.result -> Uint8Array\n *\n * Compressed result, generated by default [[Deflate#onData]]\n * and [[Deflate#onEnd]] handlers. Filled after you push last chunk\n * (call [[Deflate#push]] with `Z_FINISH` / `true` param).\n **/\n\n/**\n * Deflate.err -> Number\n *\n * Error code after deflate finished. 0 (Z_OK) on success.\n * You will not need it in real life, because deflate errors\n * are possible only on wrong options or bad `onData` / `onEnd`\n * custom handlers.\n **/\n\n/**\n * Deflate.msg -> String\n *\n * Error message, if [[Deflate.err]] != 0\n **/\n\n\n/**\n * new Deflate(options)\n * - options (Object): zlib deflate options.\n *\n * Creates new deflator instance with specified params. Throws exception\n * on bad params. Supported options:\n *\n * - `level`\n * - `windowBits`\n * - `memLevel`\n * - `strategy`\n * - `dictionary`\n *\n * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)\n * for more information on these.\n *\n * Additional options, for internal needs:\n *\n * - `chunkSize` - size of generated data chunks (16K by default)\n * - `raw` (Boolean) - do raw deflate\n * - `gzip` (Boolean) - create gzip wrapper\n * - `header` (Object) - custom header for gzip\n *   - `text` (Boolean) - true if compressed data believed to be text\n *   - `time` (Number) - modification time, unix timestamp\n *   - `os` (Number) - operation system code\n *   - `extra` (Array) - array of bytes with extra data (max 65536)\n *   - `name` (String) - file name (binary string)\n *   - `comment` (String) - comment (binary string)\n *   - `hcrc` (Boolean) - true if header crc should be added\n *\n * ##### Example:\n *\n * ```javascript\n * const pako = require('pako')\n *   , chunk1 = new Uint8Array([1,2,3,4,5,6,7,8,9])\n *   , chunk2 = new Uint8Array([10,11,12,13,14,15,16,17,18,19]);\n *\n * const deflate = new pako.Deflate({ level: 3});\n *\n * deflate.push(chunk1, false);\n * deflate.push(chunk2, true);  // true -> last chunk\n *\n * if (deflate.err) { throw new Error(deflate.err); }\n *\n * console.log(deflate.result);\n * ```\n **/\nfunction Deflate$1(options) {\n  this.options = common.assign({\n    level: Z_DEFAULT_COMPRESSION,\n    method: Z_DEFLATED$1,\n    chunkSize: 16384,\n    windowBits: 15,\n    memLevel: 8,\n    strategy: Z_DEFAULT_STRATEGY\n  }, options || {});\n\n  let opt = this.options;\n\n  if (opt.raw && (opt.windowBits > 0)) {\n    opt.windowBits = -opt.windowBits;\n  }\n\n  else if (opt.gzip && (opt.windowBits > 0) && (opt.windowBits < 16)) {\n    opt.windowBits += 16;\n  }\n\n  this.err    = 0;      // error code, if happens (0 = Z_OK)\n  this.msg    = '';     // error message\n  this.ended  = false;  // used to avoid multiple onEnd() calls\n  this.chunks = [];     // chunks of compressed data\n\n  this.strm = new zstream();\n  this.strm.avail_out = 0;\n\n  let status = deflate_1$2.deflateInit2(\n    this.strm,\n    opt.level,\n    opt.method,\n    opt.windowBits,\n    opt.memLevel,\n    opt.strategy\n  );\n\n  if (status !== Z_OK$2) {\n    throw new Error(messages[status]);\n  }\n\n  if (opt.header) {\n    deflate_1$2.deflateSetHeader(this.strm, opt.header);\n  }\n\n  if (opt.dictionary) {\n    let dict;\n    // Convert data if needed\n    if (typeof opt.dictionary === 'string') {\n      // If we need to compress text, change encoding to utf8.\n      dict = strings.string2buf(opt.dictionary);\n    } else if (toString$1.call(opt.dictionary) === '[object ArrayBuffer]') {\n      dict = new Uint8Array(opt.dictionary);\n    } else {\n      dict = opt.dictionary;\n    }\n\n    status = deflate_1$2.deflateSetDictionary(this.strm, dict);\n\n    if (status !== Z_OK$2) {\n      throw new Error(messages[status]);\n    }\n\n    this._dict_set = true;\n  }\n}\n\n/**\n * Deflate#push(data[, flush_mode]) -> Boolean\n * - data (Uint8Array|ArrayBuffer|String): input data. Strings will be\n *   converted to utf8 byte sequence.\n * - flush_mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE modes.\n *   See constants. Skipped or `false` means Z_NO_FLUSH, `true` means Z_FINISH.\n *\n * Sends input data to deflate pipe, generating [[Deflate#onData]] calls with\n * new compressed chunks. Returns `true` on success. The last data block must\n * have `flush_mode` Z_FINISH (or `true`). That will flush internal pending\n * buffers and call [[Deflate#onEnd]].\n *\n * On fail call [[Deflate#onEnd]] with error code and return false.\n *\n * ##### Example\n *\n * ```javascript\n * push(chunk, false); // push one of data chunks\n * ...\n * push(chunk, true);  // push last chunk\n * ```\n **/\nDeflate$1.prototype.push = function (data, flush_mode) {\n  const strm = this.strm;\n  const chunkSize = this.options.chunkSize;\n  let status, _flush_mode;\n\n  if (this.ended) { return false; }\n\n  if (flush_mode === ~~flush_mode) _flush_mode = flush_mode;\n  else _flush_mode = flush_mode === true ? Z_FINISH$2 : Z_NO_FLUSH$1;\n\n  // Convert data if needed\n  if (typeof data === 'string') {\n    // If we need to compress text, change encoding to utf8.\n    strm.input = strings.string2buf(data);\n  } else if (toString$1.call(data) === '[object ArrayBuffer]') {\n    strm.input = new Uint8Array(data);\n  } else {\n    strm.input = data;\n  }\n\n  strm.next_in = 0;\n  strm.avail_in = strm.input.length;\n\n  for (;;) {\n    if (strm.avail_out === 0) {\n      strm.output = new Uint8Array(chunkSize);\n      strm.next_out = 0;\n      strm.avail_out = chunkSize;\n    }\n\n    // Make sure avail_out > 6 to avoid repeating markers\n    if ((_flush_mode === Z_SYNC_FLUSH || _flush_mode === Z_FULL_FLUSH) && strm.avail_out <= 6) {\n      this.onData(strm.output.subarray(0, strm.next_out));\n      strm.avail_out = 0;\n      continue;\n    }\n\n    status = deflate_1$2.deflate(strm, _flush_mode);\n\n    // Ended => flush and finish\n    if (status === Z_STREAM_END$2) {\n      if (strm.next_out > 0) {\n        this.onData(strm.output.subarray(0, strm.next_out));\n      }\n      status = deflate_1$2.deflateEnd(this.strm);\n      this.onEnd(status);\n      this.ended = true;\n      return status === Z_OK$2;\n    }\n\n    // Flush if out buffer full\n    if (strm.avail_out === 0) {\n      this.onData(strm.output);\n      continue;\n    }\n\n    // Flush if requested and has data\n    if (_flush_mode > 0 && strm.next_out > 0) {\n      this.onData(strm.output.subarray(0, strm.next_out));\n      strm.avail_out = 0;\n      continue;\n    }\n\n    if (strm.avail_in === 0) break;\n  }\n\n  return true;\n};\n\n\n/**\n * Deflate#onData(chunk) -> Void\n * - chunk (Uint8Array): output data.\n *\n * By default, stores data blocks in `chunks[]` property and glue\n * those in `onEnd`. Override this handler, if you need another behaviour.\n **/\nDeflate$1.prototype.onData = function (chunk) {\n  this.chunks.push(chunk);\n};\n\n\n/**\n * Deflate#onEnd(status) -> Void\n * - status (Number): deflate status. 0 (Z_OK) on success,\n *   other if not.\n *\n * Called once after you tell deflate that the input stream is\n * complete (Z_FINISH). By default - join collected chunks,\n * free memory and fill `results` / `err` properties.\n **/\nDeflate$1.prototype.onEnd = function (status) {\n  // On success - join\n  if (status === Z_OK$2) {\n    this.result = common.flattenChunks(this.chunks);\n  }\n  this.chunks = [];\n  this.err = status;\n  this.msg = this.strm.msg;\n};\n\n\n/**\n * deflate(data[, options]) -> Uint8Array\n * - data (Uint8Array|ArrayBuffer|String): input data to compress.\n * - options (Object): zlib deflate options.\n *\n * Compress `data` with deflate algorithm and `options`.\n *\n * Supported options are:\n *\n * - level\n * - windowBits\n * - memLevel\n * - strategy\n * - dictionary\n *\n * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)\n * for more information on these.\n *\n * Sugar (options):\n *\n * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify\n *   negative windowBits implicitly.\n *\n * ##### Example:\n *\n * ```javascript\n * const pako = require('pako')\n * const data = new Uint8Array([1,2,3,4,5,6,7,8,9]);\n *\n * console.log(pako.deflate(data));\n * ```\n **/\nfunction deflate$1(input, options) {\n  const deflator = new Deflate$1(options);\n\n  deflator.push(input, true);\n\n  // That will never happens, if you don't cheat with options :)\n  if (deflator.err) { throw deflator.msg || messages[deflator.err]; }\n\n  return deflator.result;\n}\n\n\n/**\n * deflateRaw(data[, options]) -> Uint8Array\n * - data (Uint8Array|ArrayBuffer|String): input data to compress.\n * - options (Object): zlib deflate options.\n *\n * The same as [[deflate]], but creates raw data, without wrapper\n * (header and adler32 crc).\n **/\nfunction deflateRaw$1(input, options) {\n  options = options || {};\n  options.raw = true;\n  return deflate$1(input, options);\n}\n\n\n/**\n * gzip(data[, options]) -> Uint8Array\n * - data (Uint8Array|ArrayBuffer|String): input data to compress.\n * - options (Object): zlib deflate options.\n *\n * The same as [[deflate]], but create gzip wrapper instead of\n * deflate one.\n **/\nfunction gzip$1(input, options) {\n  options = options || {};\n  options.gzip = true;\n  return deflate$1(input, options);\n}\n\n\nvar Deflate_1$1 = Deflate$1;\nvar deflate_2 = deflate$1;\nvar deflateRaw_1$1 = deflateRaw$1;\nvar gzip_1$1 = gzip$1;\nvar constants$1 = constants$2;\n\nvar deflate_1$1 = {\n\tDeflate: Deflate_1$1,\n\tdeflate: deflate_2,\n\tdeflateRaw: deflateRaw_1$1,\n\tgzip: gzip_1$1,\n\tconstants: constants$1\n};\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\n// See state defs from inflate.js\nconst BAD$1 = 16209;       /* got a data error -- remain here until reset */\nconst TYPE$1 = 16191;      /* i: waiting for type bits, including last-flag bit */\n\n/*\n   Decode literal, length, and distance codes and write out the resulting\n   literal and match bytes until either not enough input or output is\n   available, an end-of-block is encountered, or a data error is encountered.\n   When large enough input and output buffers are supplied to inflate(), for\n   example, a 16K input buffer and a 64K output buffer, more than 95% of the\n   inflate execution time is spent in this routine.\n\n   Entry assumptions:\n\n        state.mode === LEN\n        strm.avail_in >= 6\n        strm.avail_out >= 258\n        start >= strm.avail_out\n        state.bits < 8\n\n   On return, state.mode is one of:\n\n        LEN -- ran out of enough output space or enough available input\n        TYPE -- reached end of block code, inflate() to interpret next block\n        BAD -- error in block data\n\n   Notes:\n\n    - The maximum input bits used by a length/distance pair is 15 bits for the\n      length code, 5 bits for the length extra, 15 bits for the distance code,\n      and 13 bits for the distance extra.  This totals 48 bits, or six bytes.\n      Therefore if strm.avail_in >= 6, then there is enough input to avoid\n      checking for available input while decoding.\n\n    - The maximum bytes that a single length/distance pair can output is 258\n      bytes, which is the maximum length that can be coded.  inflate_fast()\n      requires strm.avail_out >= 258 for each loop to avoid checking for\n      output space.\n */\nvar inffast = function inflate_fast(strm, start) {\n  let _in;                    /* local strm.input */\n  let last;                   /* have enough input while in < last */\n  let _out;                   /* local strm.output */\n  let beg;                    /* inflate()'s initial strm.output */\n  let end;                    /* while out < end, enough space available */\n//#ifdef INFLATE_STRICT\n  let dmax;                   /* maximum distance from zlib header */\n//#endif\n  let wsize;                  /* window size or zero if not using window */\n  let whave;                  /* valid bytes in the window */\n  let wnext;                  /* window write index */\n  // Use `s_window` instead `window`, avoid conflict with instrumentation tools\n  let s_window;               /* allocated sliding window, if wsize != 0 */\n  let hold;                   /* local strm.hold */\n  let bits;                   /* local strm.bits */\n  let lcode;                  /* local strm.lencode */\n  let dcode;                  /* local strm.distcode */\n  let lmask;                  /* mask for first level of length codes */\n  let dmask;                  /* mask for first level of distance codes */\n  let here;                   /* retrieved table entry */\n  let op;                     /* code bits, operation, extra bits, or */\n                              /*  window position, window bytes to copy */\n  let len;                    /* match length, unused bytes */\n  let dist;                   /* match distance */\n  let from;                   /* where to copy match from */\n  let from_source;\n\n\n  let input, output; // JS specific, because we have no pointers\n\n  /* copy state to local variables */\n  const state = strm.state;\n  //here = state.here;\n  _in = strm.next_in;\n  input = strm.input;\n  last = _in + (strm.avail_in - 5);\n  _out = strm.next_out;\n  output = strm.output;\n  beg = _out - (start - strm.avail_out);\n  end = _out + (strm.avail_out - 257);\n//#ifdef INFLATE_STRICT\n  dmax = state.dmax;\n//#endif\n  wsize = state.wsize;\n  whave = state.whave;\n  wnext = state.wnext;\n  s_window = state.window;\n  hold = state.hold;\n  bits = state.bits;\n  lcode = state.lencode;\n  dcode = state.distcode;\n  lmask = (1 << state.lenbits) - 1;\n  dmask = (1 << state.distbits) - 1;\n\n\n  /* decode literals and length/distances until end-of-block or not enough\n     input data or output space */\n\n  top:\n  do {\n    if (bits < 15) {\n      hold += input[_in++] << bits;\n      bits += 8;\n      hold += input[_in++] << bits;\n      bits += 8;\n    }\n\n    here = lcode[hold & lmask];\n\n    dolen:\n    for (;;) { // Goto emulation\n      op = here >>> 24/*here.bits*/;\n      hold >>>= op;\n      bits -= op;\n      op = (here >>> 16) & 0xff/*here.op*/;\n      if (op === 0) {                          /* literal */\n        //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?\n        //        \"inflate:         literal '%c'\\n\" :\n        //        \"inflate:         literal 0x%02x\\n\", here.val));\n        output[_out++] = here & 0xffff/*here.val*/;\n      }\n      else if (op & 16) {                     /* length base */\n        len = here & 0xffff/*here.val*/;\n        op &= 15;                           /* number of extra bits */\n        if (op) {\n          if (bits < op) {\n            hold += input[_in++] << bits;\n            bits += 8;\n          }\n          len += hold & ((1 << op) - 1);\n          hold >>>= op;\n          bits -= op;\n        }\n        //Tracevv((stderr, \"inflate:         length %u\\n\", len));\n        if (bits < 15) {\n          hold += input[_in++] << bits;\n          bits += 8;\n          hold += input[_in++] << bits;\n          bits += 8;\n        }\n        here = dcode[hold & dmask];\n\n        dodist:\n        for (;;) { // goto emulation\n          op = here >>> 24/*here.bits*/;\n          hold >>>= op;\n          bits -= op;\n          op = (here >>> 16) & 0xff/*here.op*/;\n\n          if (op & 16) {                      /* distance base */\n            dist = here & 0xffff/*here.val*/;\n            op &= 15;                       /* number of extra bits */\n            if (bits < op) {\n              hold += input[_in++] << bits;\n              bits += 8;\n              if (bits < op) {\n                hold += input[_in++] << bits;\n                bits += 8;\n              }\n            }\n            dist += hold & ((1 << op) - 1);\n//#ifdef INFLATE_STRICT\n            if (dist > dmax) {\n              strm.msg = 'invalid distance too far back';\n              state.mode = BAD$1;\n              break top;\n            }\n//#endif\n            hold >>>= op;\n            bits -= op;\n            //Tracevv((stderr, \"inflate:         distance %u\\n\", dist));\n            op = _out - beg;                /* max distance in output */\n            if (dist > op) {                /* see if copy from window */\n              op = dist - op;               /* distance back in window */\n              if (op > whave) {\n                if (state.sane) {\n                  strm.msg = 'invalid distance too far back';\n                  state.mode = BAD$1;\n                  break top;\n                }\n\n// (!) This block is disabled in zlib defaults,\n// don't enable it for binary compatibility\n//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR\n//                if (len <= op - whave) {\n//                  do {\n//                    output[_out++] = 0;\n//                  } while (--len);\n//                  continue top;\n//                }\n//                len -= op - whave;\n//                do {\n//                  output[_out++] = 0;\n//                } while (--op > whave);\n//                if (op === 0) {\n//                  from = _out - dist;\n//                  do {\n//                    output[_out++] = output[from++];\n//                  } while (--len);\n//                  continue top;\n//                }\n//#endif\n              }\n              from = 0; // window index\n              from_source = s_window;\n              if (wnext === 0) {           /* very common case */\n                from += wsize - op;\n                if (op < len) {         /* some from window */\n                  len -= op;\n                  do {\n                    output[_out++] = s_window[from++];\n                  } while (--op);\n                  from = _out - dist;  /* rest from output */\n                  from_source = output;\n                }\n              }\n              else if (wnext < op) {      /* wrap around window */\n                from += wsize + wnext - op;\n                op -= wnext;\n                if (op < len) {         /* some from end of window */\n                  len -= op;\n                  do {\n                    output[_out++] = s_window[from++];\n                  } while (--op);\n                  from = 0;\n                  if (wnext < len) {  /* some from start of window */\n                    op = wnext;\n                    len -= op;\n                    do {\n                      output[_out++] = s_window[from++];\n                    } while (--op);\n                    from = _out - dist;      /* rest from output */\n                    from_source = output;\n                  }\n                }\n              }\n              else {                      /* contiguous in window */\n                from += wnext - op;\n                if (op < len) {         /* some from window */\n                  len -= op;\n                  do {\n                    output[_out++] = s_window[from++];\n                  } while (--op);\n                  from = _out - dist;  /* rest from output */\n                  from_source = output;\n                }\n              }\n              while (len > 2) {\n                output[_out++] = from_source[from++];\n                output[_out++] = from_source[from++];\n                output[_out++] = from_source[from++];\n                len -= 3;\n              }\n              if (len) {\n                output[_out++] = from_source[from++];\n                if (len > 1) {\n                  output[_out++] = from_source[from++];\n                }\n              }\n            }\n            else {\n              from = _out - dist;          /* copy direct from output */\n              do {                        /* minimum length is three */\n                output[_out++] = output[from++];\n                output[_out++] = output[from++];\n                output[_out++] = output[from++];\n                len -= 3;\n              } while (len > 2);\n              if (len) {\n                output[_out++] = output[from++];\n                if (len > 1) {\n                  output[_out++] = output[from++];\n                }\n              }\n            }\n          }\n          else if ((op & 64) === 0) {          /* 2nd level distance code */\n            here = dcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];\n            continue dodist;\n          }\n          else {\n            strm.msg = 'invalid distance code';\n            state.mode = BAD$1;\n            break top;\n          }\n\n          break; // need to emulate goto via \"continue\"\n        }\n      }\n      else if ((op & 64) === 0) {              /* 2nd level length code */\n        here = lcode[(here & 0xffff)/*here.val*/ + (hold & ((1 << op) - 1))];\n        continue dolen;\n      }\n      else if (op & 32) {                     /* end-of-block */\n        //Tracevv((stderr, \"inflate:         end of block\\n\"));\n        state.mode = TYPE$1;\n        break top;\n      }\n      else {\n        strm.msg = 'invalid literal/length code';\n        state.mode = BAD$1;\n        break top;\n      }\n\n      break; // need to emulate goto via \"continue\"\n    }\n  } while (_in < last && _out < end);\n\n  /* return unused bytes (on entry, bits < 8, so in won't go too far back) */\n  len = bits >> 3;\n  _in -= len;\n  bits -= len << 3;\n  hold &= (1 << bits) - 1;\n\n  /* update state and return */\n  strm.next_in = _in;\n  strm.next_out = _out;\n  strm.avail_in = (_in < last ? 5 + (last - _in) : 5 - (_in - last));\n  strm.avail_out = (_out < end ? 257 + (end - _out) : 257 - (_out - end));\n  state.hold = hold;\n  state.bits = bits;\n  return;\n};\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nconst MAXBITS = 15;\nconst ENOUGH_LENS$1 = 852;\nconst ENOUGH_DISTS$1 = 592;\n//const ENOUGH = (ENOUGH_LENS+ENOUGH_DISTS);\n\nconst CODES$1 = 0;\nconst LENS$1 = 1;\nconst DISTS$1 = 2;\n\nconst lbase = new Uint16Array([ /* Length codes 257..285 base */\n  3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,\n  35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0\n]);\n\nconst lext = new Uint8Array([ /* Length codes 257..285 extra */\n  16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,\n  19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78\n]);\n\nconst dbase = new Uint16Array([ /* Distance codes 0..29 base */\n  1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,\n  257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,\n  8193, 12289, 16385, 24577, 0, 0\n]);\n\nconst dext = new Uint8Array([ /* Distance codes 0..29 extra */\n  16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,\n  23, 23, 24, 24, 25, 25, 26, 26, 27, 27,\n  28, 28, 29, 29, 64, 64\n]);\n\nconst inflate_table = (type, lens, lens_index, codes, table, table_index, work, opts) =>\n{\n  const bits = opts.bits;\n      //here = opts.here; /* table entry for duplication */\n\n  let len = 0;               /* a code's length in bits */\n  let sym = 0;               /* index of code symbols */\n  let min = 0, max = 0;          /* minimum and maximum code lengths */\n  let root = 0;              /* number of index bits for root table */\n  let curr = 0;              /* number of index bits for current table */\n  let drop = 0;              /* code bits to drop for sub-table */\n  let left = 0;                   /* number of prefix codes available */\n  let used = 0;              /* code entries in table used */\n  let huff = 0;              /* Huffman code */\n  let incr;              /* for incrementing code, index */\n  let fill;              /* index for replicating entries */\n  let low;               /* low bits for current root entry */\n  let mask;              /* mask for low root bits */\n  let next;             /* next available space in table */\n  let base = null;     /* base value table to use */\n//  let shoextra;    /* extra bits table to use */\n  let match;                  /* use base and extra for symbol >= match */\n  const count = new Uint16Array(MAXBITS + 1); //[MAXBITS+1];    /* number of codes of each length */\n  const offs = new Uint16Array(MAXBITS + 1); //[MAXBITS+1];     /* offsets in table for each length */\n  let extra = null;\n\n  let here_bits, here_op, here_val;\n\n  /*\n   Process a set of code lengths to create a canonical Huffman code.  The\n   code lengths are lens[0..codes-1].  Each length corresponds to the\n   symbols 0..codes-1.  The Huffman code is generated by first sorting the\n   symbols by length from short to long, and retaining the symbol order\n   for codes with equal lengths.  Then the code starts with all zero bits\n   for the first code of the shortest length, and the codes are integer\n   increments for the same length, and zeros are appended as the length\n   increases.  For the deflate format, these bits are stored backwards\n   from their more natural integer increment ordering, and so when the\n   decoding tables are built in the large loop below, the integer codes\n   are incremented backwards.\n\n   This routine assumes, but does not check, that all of the entries in\n   lens[] are in the range 0..MAXBITS.  The caller must assure this.\n   1..MAXBITS is interpreted as that code length.  zero means that that\n   symbol does not occur in this code.\n\n   The codes are sorted by computing a count of codes for each length,\n   creating from that a table of starting indices for each length in the\n   sorted table, and then entering the symbols in order in the sorted\n   table.  The sorted table is work[], with that space being provided by\n   the caller.\n\n   The length counts are used for other purposes as well, i.e. finding\n   the minimum and maximum length codes, determining if there are any\n   codes at all, checking for a valid set of lengths, and looking ahead\n   at length counts to determine sub-table sizes when building the\n   decoding tables.\n   */\n\n  /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */\n  for (len = 0; len <= MAXBITS; len++) {\n    count[len] = 0;\n  }\n  for (sym = 0; sym < codes; sym++) {\n    count[lens[lens_index + sym]]++;\n  }\n\n  /* bound code lengths, force root to be within code lengths */\n  root = bits;\n  for (max = MAXBITS; max >= 1; max--) {\n    if (count[max] !== 0) { break; }\n  }\n  if (root > max) {\n    root = max;\n  }\n  if (max === 0) {                     /* no symbols to code at all */\n    //table.op[opts.table_index] = 64;  //here.op = (var char)64;    /* invalid code marker */\n    //table.bits[opts.table_index] = 1;   //here.bits = (var char)1;\n    //table.val[opts.table_index++] = 0;   //here.val = (var short)0;\n    table[table_index++] = (1 << 24) | (64 << 16) | 0;\n\n\n    //table.op[opts.table_index] = 64;\n    //table.bits[opts.table_index] = 1;\n    //table.val[opts.table_index++] = 0;\n    table[table_index++] = (1 << 24) | (64 << 16) | 0;\n\n    opts.bits = 1;\n    return 0;     /* no symbols, but wait for decoding to report error */\n  }\n  for (min = 1; min < max; min++) {\n    if (count[min] !== 0) { break; }\n  }\n  if (root < min) {\n    root = min;\n  }\n\n  /* check for an over-subscribed or incomplete set of lengths */\n  left = 1;\n  for (len = 1; len <= MAXBITS; len++) {\n    left <<= 1;\n    left -= count[len];\n    if (left < 0) {\n      return -1;\n    }        /* over-subscribed */\n  }\n  if (left > 0 && (type === CODES$1 || max !== 1)) {\n    return -1;                      /* incomplete set */\n  }\n\n  /* generate offsets into symbol table for each length for sorting */\n  offs[1] = 0;\n  for (len = 1; len < MAXBITS; len++) {\n    offs[len + 1] = offs[len] + count[len];\n  }\n\n  /* sort symbols by length, by symbol order within each length */\n  for (sym = 0; sym < codes; sym++) {\n    if (lens[lens_index + sym] !== 0) {\n      work[offs[lens[lens_index + sym]]++] = sym;\n    }\n  }\n\n  /*\n   Create and fill in decoding tables.  In this loop, the table being\n   filled is at next and has curr index bits.  The code being used is huff\n   with length len.  That code is converted to an index by dropping drop\n   bits off of the bottom.  For codes where len is less than drop + curr,\n   those top drop + curr - len bits are incremented through all values to\n   fill the table with replicated entries.\n\n   root is the number of index bits for the root table.  When len exceeds\n   root, sub-tables are created pointed to by the root entry with an index\n   of the low root bits of huff.  This is saved in low to check for when a\n   new sub-table should be started.  drop is zero when the root table is\n   being filled, and drop is root when sub-tables are being filled.\n\n   When a new sub-table is needed, it is necessary to look ahead in the\n   code lengths to determine what size sub-table is needed.  The length\n   counts are used for this, and so count[] is decremented as codes are\n   entered in the tables.\n\n   used keeps track of how many table entries have been allocated from the\n   provided *table space.  It is checked for LENS and DIST tables against\n   the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in\n   the initial root table size constants.  See the comments in inftrees.h\n   for more information.\n\n   sym increments through all symbols, and the loop terminates when\n   all codes of length max, i.e. all codes, have been processed.  This\n   routine permits incomplete codes, so another loop after this one fills\n   in the rest of the decoding tables with invalid code markers.\n   */\n\n  /* set up for code type */\n  // poor man optimization - use if-else instead of switch,\n  // to avoid deopts in old v8\n  if (type === CODES$1) {\n    base = extra = work;    /* dummy value--not used */\n    match = 20;\n\n  } else if (type === LENS$1) {\n    base = lbase;\n    extra = lext;\n    match = 257;\n\n  } else {                    /* DISTS */\n    base = dbase;\n    extra = dext;\n    match = 0;\n  }\n\n  /* initialize opts for loop */\n  huff = 0;                   /* starting code */\n  sym = 0;                    /* starting code symbol */\n  len = min;                  /* starting code length */\n  next = table_index;              /* current table to fill in */\n  curr = root;                /* current table index bits */\n  drop = 0;                   /* current bits to drop from code for index */\n  low = -1;                   /* trigger new sub-table when len > root */\n  used = 1 << root;          /* use root table entries */\n  mask = used - 1;            /* mask for comparing low */\n\n  /* check available table space */\n  if ((type === LENS$1 && used > ENOUGH_LENS$1) ||\n    (type === DISTS$1 && used > ENOUGH_DISTS$1)) {\n    return 1;\n  }\n\n  /* process all codes and make table entries */\n  for (;;) {\n    /* create table entry */\n    here_bits = len - drop;\n    if (work[sym] + 1 < match) {\n      here_op = 0;\n      here_val = work[sym];\n    }\n    else if (work[sym] >= match) {\n      here_op = extra[work[sym] - match];\n      here_val = base[work[sym] - match];\n    }\n    else {\n      here_op = 32 + 64;         /* end of block */\n      here_val = 0;\n    }\n\n    /* replicate for those indices with low len bits equal to huff */\n    incr = 1 << (len - drop);\n    fill = 1 << curr;\n    min = fill;                 /* save offset to next table */\n    do {\n      fill -= incr;\n      table[next + (huff >> drop) + fill] = (here_bits << 24) | (here_op << 16) | here_val |0;\n    } while (fill !== 0);\n\n    /* backwards increment the len-bit code huff */\n    incr = 1 << (len - 1);\n    while (huff & incr) {\n      incr >>= 1;\n    }\n    if (incr !== 0) {\n      huff &= incr - 1;\n      huff += incr;\n    } else {\n      huff = 0;\n    }\n\n    /* go to next symbol, update count, len */\n    sym++;\n    if (--count[len] === 0) {\n      if (len === max) { break; }\n      len = lens[lens_index + work[sym]];\n    }\n\n    /* create new sub-table if needed */\n    if (len > root && (huff & mask) !== low) {\n      /* if first time, transition to sub-tables */\n      if (drop === 0) {\n        drop = root;\n      }\n\n      /* increment past last table */\n      next += min;            /* here min is 1 << curr */\n\n      /* determine length of next table */\n      curr = len - drop;\n      left = 1 << curr;\n      while (curr + drop < max) {\n        left -= count[curr + drop];\n        if (left <= 0) { break; }\n        curr++;\n        left <<= 1;\n      }\n\n      /* check for enough space */\n      used += 1 << curr;\n      if ((type === LENS$1 && used > ENOUGH_LENS$1) ||\n        (type === DISTS$1 && used > ENOUGH_DISTS$1)) {\n        return 1;\n      }\n\n      /* point entry in root table to sub-table */\n      low = huff & mask;\n      /*table.op[low] = curr;\n      table.bits[low] = root;\n      table.val[low] = next - opts.table_index;*/\n      table[low] = (root << 24) | (curr << 16) | (next - table_index) |0;\n    }\n  }\n\n  /* fill in remaining table entry if code is incomplete (guaranteed to have\n   at most one remaining entry, since if the code is incomplete, the\n   maximum code length that was allowed to get this far is one bit) */\n  if (huff !== 0) {\n    //table.op[next + huff] = 64;            /* invalid code marker */\n    //table.bits[next + huff] = len - drop;\n    //table.val[next + huff] = 0;\n    table[next + huff] = ((len - drop) << 24) | (64 << 16) |0;\n  }\n\n  /* set return parameters */\n  //opts.table_index += used;\n  opts.bits = root;\n  return 0;\n};\n\n\nvar inftrees = inflate_table;\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\n\n\n\n\n\nconst CODES = 0;\nconst LENS = 1;\nconst DISTS = 2;\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\nconst {\n  Z_FINISH: Z_FINISH$1, Z_BLOCK, Z_TREES,\n  Z_OK: Z_OK$1, Z_STREAM_END: Z_STREAM_END$1, Z_NEED_DICT: Z_NEED_DICT$1, Z_STREAM_ERROR: Z_STREAM_ERROR$1, Z_DATA_ERROR: Z_DATA_ERROR$1, Z_MEM_ERROR: Z_MEM_ERROR$1, Z_BUF_ERROR,\n  Z_DEFLATED\n} = constants$2;\n\n\n/* STATES ====================================================================*/\n/* ===========================================================================*/\n\n\nconst    HEAD = 16180;       /* i: waiting for magic header */\nconst    FLAGS = 16181;      /* i: waiting for method and flags (gzip) */\nconst    TIME = 16182;       /* i: waiting for modification time (gzip) */\nconst    OS = 16183;         /* i: waiting for extra flags and operating system (gzip) */\nconst    EXLEN = 16184;      /* i: waiting for extra length (gzip) */\nconst    EXTRA = 16185;      /* i: waiting for extra bytes (gzip) */\nconst    NAME = 16186;       /* i: waiting for end of file name (gzip) */\nconst    COMMENT = 16187;    /* i: waiting for end of comment (gzip) */\nconst    HCRC = 16188;       /* i: waiting for header crc (gzip) */\nconst    DICTID = 16189;    /* i: waiting for dictionary check value */\nconst    DICT = 16190;      /* waiting for inflateSetDictionary() call */\nconst        TYPE = 16191;      /* i: waiting for type bits, including last-flag bit */\nconst        TYPEDO = 16192;    /* i: same, but skip check to exit inflate on new block */\nconst        STORED = 16193;    /* i: waiting for stored size (length and complement) */\nconst        COPY_ = 16194;     /* i/o: same as COPY below, but only first time in */\nconst        COPY = 16195;      /* i/o: waiting for input or output to copy stored block */\nconst        TABLE = 16196;     /* i: waiting for dynamic block table lengths */\nconst        LENLENS = 16197;   /* i: waiting for code length code lengths */\nconst        CODELENS = 16198;  /* i: waiting for length/lit and distance code lengths */\nconst            LEN_ = 16199;      /* i: same as LEN below, but only first time in */\nconst            LEN = 16200;       /* i: waiting for length/lit/eob code */\nconst            LENEXT = 16201;    /* i: waiting for length extra bits */\nconst            DIST = 16202;      /* i: waiting for distance code */\nconst            DISTEXT = 16203;   /* i: waiting for distance extra bits */\nconst            MATCH = 16204;     /* o: waiting for output space to copy string */\nconst            LIT = 16205;       /* o: waiting for output space to write literal */\nconst    CHECK = 16206;     /* i: waiting for 32-bit check value */\nconst    LENGTH = 16207;    /* i: waiting for 32-bit length (gzip) */\nconst    DONE = 16208;      /* finished check, done -- remain here until reset */\nconst    BAD = 16209;       /* got a data error -- remain here until reset */\nconst    MEM = 16210;       /* got an inflate() memory error -- remain here until reset */\nconst    SYNC = 16211;      /* looking for synchronization bytes to restart inflate() */\n\n/* ===========================================================================*/\n\n\n\nconst ENOUGH_LENS = 852;\nconst ENOUGH_DISTS = 592;\n//const ENOUGH =  (ENOUGH_LENS+ENOUGH_DISTS);\n\nconst MAX_WBITS = 15;\n/* 32K LZ77 window */\nconst DEF_WBITS = MAX_WBITS;\n\n\nconst zswap32 = (q) => {\n\n  return  (((q >>> 24) & 0xff) +\n          ((q >>> 8) & 0xff00) +\n          ((q & 0xff00) << 8) +\n          ((q & 0xff) << 24));\n};\n\n\nfunction InflateState() {\n  this.strm = null;           /* pointer back to this zlib stream */\n  this.mode = 0;              /* current inflate mode */\n  this.last = false;          /* true if processing last block */\n  this.wrap = 0;              /* bit 0 true for zlib, bit 1 true for gzip,\n                                 bit 2 true to validate check value */\n  this.havedict = false;      /* true if dictionary provided */\n  this.flags = 0;             /* gzip header method and flags (0 if zlib), or\n                                 -1 if raw or no header yet */\n  this.dmax = 0;              /* zlib header max distance (INFLATE_STRICT) */\n  this.check = 0;             /* protected copy of check value */\n  this.total = 0;             /* protected copy of output count */\n  // TODO: may be {}\n  this.head = null;           /* where to save gzip header information */\n\n  /* sliding window */\n  this.wbits = 0;             /* log base 2 of requested window size */\n  this.wsize = 0;             /* window size or zero if not using window */\n  this.whave = 0;             /* valid bytes in the window */\n  this.wnext = 0;             /* window write index */\n  this.window = null;         /* allocated sliding window, if needed */\n\n  /* bit accumulator */\n  this.hold = 0;              /* input bit accumulator */\n  this.bits = 0;              /* number of bits in \"in\" */\n\n  /* for string and stored block copying */\n  this.length = 0;            /* literal or length of data to copy */\n  this.offset = 0;            /* distance back to copy string from */\n\n  /* for table and code decoding */\n  this.extra = 0;             /* extra bits needed */\n\n  /* fixed and dynamic code tables */\n  this.lencode = null;          /* starting table for length/literal codes */\n  this.distcode = null;         /* starting table for distance codes */\n  this.lenbits = 0;           /* index bits for lencode */\n  this.distbits = 0;          /* index bits for distcode */\n\n  /* dynamic table building */\n  this.ncode = 0;             /* number of code length code lengths */\n  this.nlen = 0;              /* number of length code lengths */\n  this.ndist = 0;             /* number of distance code lengths */\n  this.have = 0;              /* number of code lengths in lens[] */\n  this.next = null;              /* next available space in codes[] */\n\n  this.lens = new Uint16Array(320); /* temporary storage for code lengths */\n  this.work = new Uint16Array(288); /* work area for code table building */\n\n  /*\n   because we don't have pointers in js, we use lencode and distcode directly\n   as buffers so we don't need codes\n  */\n  //this.codes = new Int32Array(ENOUGH);       /* space for code tables */\n  this.lendyn = null;              /* dynamic table for length/literal codes (JS specific) */\n  this.distdyn = null;             /* dynamic table for distance codes (JS specific) */\n  this.sane = 0;                   /* if false, allow invalid distance too far */\n  this.back = 0;                   /* bits back of last unprocessed length/lit */\n  this.was = 0;                    /* initial length of match */\n}\n\n\nconst inflateStateCheck = (strm) => {\n\n  if (!strm) {\n    return 1;\n  }\n  const state = strm.state;\n  if (!state || state.strm !== strm ||\n    state.mode < HEAD || state.mode > SYNC) {\n    return 1;\n  }\n  return 0;\n};\n\n\nconst inflateResetKeep = (strm) => {\n\n  if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1; }\n  const state = strm.state;\n  strm.total_in = strm.total_out = state.total = 0;\n  strm.msg = ''; /*Z_NULL*/\n  if (state.wrap) {       /* to support ill-conceived Java test suite */\n    strm.adler = state.wrap & 1;\n  }\n  state.mode = HEAD;\n  state.last = 0;\n  state.havedict = 0;\n  state.flags = -1;\n  state.dmax = 32768;\n  state.head = null/*Z_NULL*/;\n  state.hold = 0;\n  state.bits = 0;\n  //state.lencode = state.distcode = state.next = state.codes;\n  state.lencode = state.lendyn = new Int32Array(ENOUGH_LENS);\n  state.distcode = state.distdyn = new Int32Array(ENOUGH_DISTS);\n\n  state.sane = 1;\n  state.back = -1;\n  //Tracev((stderr, \"inflate: reset\\n\"));\n  return Z_OK$1;\n};\n\n\nconst inflateReset = (strm) => {\n\n  if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1; }\n  const state = strm.state;\n  state.wsize = 0;\n  state.whave = 0;\n  state.wnext = 0;\n  return inflateResetKeep(strm);\n\n};\n\n\nconst inflateReset2 = (strm, windowBits) => {\n  let wrap;\n\n  /* get the state */\n  if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1; }\n  const state = strm.state;\n\n  /* extract wrap request from windowBits parameter */\n  if (windowBits < 0) {\n    wrap = 0;\n    windowBits = -windowBits;\n  }\n  else {\n    wrap = (windowBits >> 4) + 5;\n    if (windowBits < 48) {\n      windowBits &= 15;\n    }\n  }\n\n  /* set number of window bits, free window if different */\n  if (windowBits && (windowBits < 8 || windowBits > 15)) {\n    return Z_STREAM_ERROR$1;\n  }\n  if (state.window !== null && state.wbits !== windowBits) {\n    state.window = null;\n  }\n\n  /* update state and reset the rest of it */\n  state.wrap = wrap;\n  state.wbits = windowBits;\n  return inflateReset(strm);\n};\n\n\nconst inflateInit2 = (strm, windowBits) => {\n\n  if (!strm) { return Z_STREAM_ERROR$1; }\n  //strm.msg = Z_NULL;                 /* in case we return an error */\n\n  const state = new InflateState();\n\n  //if (state === Z_NULL) return Z_MEM_ERROR;\n  //Tracev((stderr, \"inflate: allocated\\n\"));\n  strm.state = state;\n  state.strm = strm;\n  state.window = null/*Z_NULL*/;\n  state.mode = HEAD;     /* to pass state test in inflateReset2() */\n  const ret = inflateReset2(strm, windowBits);\n  if (ret !== Z_OK$1) {\n    strm.state = null/*Z_NULL*/;\n  }\n  return ret;\n};\n\n\nconst inflateInit = (strm) => {\n\n  return inflateInit2(strm, DEF_WBITS);\n};\n\n\n/*\n Return state with length and distance decoding tables and index sizes set to\n fixed code decoding.  Normally this returns fixed tables from inffixed.h.\n If BUILDFIXED is defined, then instead this routine builds the tables the\n first time it's called, and returns those tables the first time and\n thereafter.  This reduces the size of the code by about 2K bytes, in\n exchange for a little execution time.  However, BUILDFIXED should not be\n used for threaded applications, since the rewriting of the tables and virgin\n may not be thread-safe.\n */\nlet virgin = true;\n\nlet lenfix, distfix; // We have no pointers in JS, so keep tables separate\n\n\nconst fixedtables = (state) => {\n\n  /* build fixed huffman tables if first call (may not be thread safe) */\n  if (virgin) {\n    lenfix = new Int32Array(512);\n    distfix = new Int32Array(32);\n\n    /* literal/length table */\n    let sym = 0;\n    while (sym < 144) { state.lens[sym++] = 8; }\n    while (sym < 256) { state.lens[sym++] = 9; }\n    while (sym < 280) { state.lens[sym++] = 7; }\n    while (sym < 288) { state.lens[sym++] = 8; }\n\n    inftrees(LENS,  state.lens, 0, 288, lenfix,   0, state.work, { bits: 9 });\n\n    /* distance table */\n    sym = 0;\n    while (sym < 32) { state.lens[sym++] = 5; }\n\n    inftrees(DISTS, state.lens, 0, 32,   distfix, 0, state.work, { bits: 5 });\n\n    /* do this just once */\n    virgin = false;\n  }\n\n  state.lencode = lenfix;\n  state.lenbits = 9;\n  state.distcode = distfix;\n  state.distbits = 5;\n};\n\n\n/*\n Update the window with the last wsize (normally 32K) bytes written before\n returning.  If window does not exist yet, create it.  This is only called\n when a window is already in use, or when output has been written during this\n inflate call, but the end of the deflate stream has not been reached yet.\n It is also called to create a window for dictionary data when a dictionary\n is loaded.\n\n Providing output buffers larger than 32K to inflate() should provide a speed\n advantage, since only the last 32K of output is copied to the sliding window\n upon return from inflate(), and since all distances after the first 32K of\n output will fall in the output data, making match copies simpler and faster.\n The advantage may be dependent on the size of the processor's data caches.\n */\nconst updatewindow = (strm, src, end, copy) => {\n\n  let dist;\n  const state = strm.state;\n\n  /* if it hasn't been done already, allocate space for the window */\n  if (state.window === null) {\n    state.wsize = 1 << state.wbits;\n    state.wnext = 0;\n    state.whave = 0;\n\n    state.window = new Uint8Array(state.wsize);\n  }\n\n  /* copy state->wsize or less output bytes into the circular window */\n  if (copy >= state.wsize) {\n    state.window.set(src.subarray(end - state.wsize, end), 0);\n    state.wnext = 0;\n    state.whave = state.wsize;\n  }\n  else {\n    dist = state.wsize - state.wnext;\n    if (dist > copy) {\n      dist = copy;\n    }\n    //zmemcpy(state->window + state->wnext, end - copy, dist);\n    state.window.set(src.subarray(end - copy, end - copy + dist), state.wnext);\n    copy -= dist;\n    if (copy) {\n      //zmemcpy(state->window, end - copy, copy);\n      state.window.set(src.subarray(end - copy, end), 0);\n      state.wnext = copy;\n      state.whave = state.wsize;\n    }\n    else {\n      state.wnext += dist;\n      if (state.wnext === state.wsize) { state.wnext = 0; }\n      if (state.whave < state.wsize) { state.whave += dist; }\n    }\n  }\n  return 0;\n};\n\n\nconst inflate$2 = (strm, flush) => {\n\n  let state;\n  let input, output;          // input/output buffers\n  let next;                   /* next input INDEX */\n  let put;                    /* next output INDEX */\n  let have, left;             /* available input and output */\n  let hold;                   /* bit buffer */\n  let bits;                   /* bits in bit buffer */\n  let _in, _out;              /* save starting available input and output */\n  let copy;                   /* number of stored or match bytes to copy */\n  let from;                   /* where to copy match bytes from */\n  let from_source;\n  let here = 0;               /* current decoding table entry */\n  let here_bits, here_op, here_val; // paked \"here\" denormalized (JS specific)\n  //let last;                   /* parent table entry */\n  let last_bits, last_op, last_val; // paked \"last\" denormalized (JS specific)\n  let len;                    /* length to copy for repeats, bits to drop */\n  let ret;                    /* return code */\n  const hbuf = new Uint8Array(4);    /* buffer for gzip header crc calculation */\n  let opts;\n\n  let n; // temporary variable for NEED_BITS\n\n  const order = /* permutation of code lengths */\n    new Uint8Array([ 16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15 ]);\n\n\n  if (inflateStateCheck(strm) || !strm.output ||\n      (!strm.input && strm.avail_in !== 0)) {\n    return Z_STREAM_ERROR$1;\n  }\n\n  state = strm.state;\n  if (state.mode === TYPE) { state.mode = TYPEDO; }    /* skip check */\n\n\n  //--- LOAD() ---\n  put = strm.next_out;\n  output = strm.output;\n  left = strm.avail_out;\n  next = strm.next_in;\n  input = strm.input;\n  have = strm.avail_in;\n  hold = state.hold;\n  bits = state.bits;\n  //---\n\n  _in = have;\n  _out = left;\n  ret = Z_OK$1;\n\n  inf_leave: // goto emulation\n  for (;;) {\n    switch (state.mode) {\n      case HEAD:\n        if (state.wrap === 0) {\n          state.mode = TYPEDO;\n          break;\n        }\n        //=== NEEDBITS(16);\n        while (bits < 16) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        if ((state.wrap & 2) && hold === 0x8b1f) {  /* gzip header */\n          if (state.wbits === 0) {\n            state.wbits = 15;\n          }\n          state.check = 0/*crc32(0L, Z_NULL, 0)*/;\n          //=== CRC2(state.check, hold);\n          hbuf[0] = hold & 0xff;\n          hbuf[1] = (hold >>> 8) & 0xff;\n          state.check = crc32_1(state.check, hbuf, 2, 0);\n          //===//\n\n          //=== INITBITS();\n          hold = 0;\n          bits = 0;\n          //===//\n          state.mode = FLAGS;\n          break;\n        }\n        if (state.head) {\n          state.head.done = false;\n        }\n        if (!(state.wrap & 1) ||   /* check if zlib header allowed */\n          (((hold & 0xff)/*BITS(8)*/ << 8) + (hold >> 8)) % 31) {\n          strm.msg = 'incorrect header check';\n          state.mode = BAD;\n          break;\n        }\n        if ((hold & 0x0f)/*BITS(4)*/ !== Z_DEFLATED) {\n          strm.msg = 'unknown compression method';\n          state.mode = BAD;\n          break;\n        }\n        //--- DROPBITS(4) ---//\n        hold >>>= 4;\n        bits -= 4;\n        //---//\n        len = (hold & 0x0f)/*BITS(4)*/ + 8;\n        if (state.wbits === 0) {\n          state.wbits = len;\n        }\n        if (len > 15 || len > state.wbits) {\n          strm.msg = 'invalid window size';\n          state.mode = BAD;\n          break;\n        }\n\n        // !!! pako patch. Force use `options.windowBits` if passed.\n        // Required to always use max window size by default.\n        state.dmax = 1 << state.wbits;\n        //state.dmax = 1 << len;\n\n        state.flags = 0;               /* indicate zlib header */\n        //Tracev((stderr, \"inflate:   zlib header ok\\n\"));\n        strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;\n        state.mode = hold & 0x200 ? DICTID : TYPE;\n        //=== INITBITS();\n        hold = 0;\n        bits = 0;\n        //===//\n        break;\n      case FLAGS:\n        //=== NEEDBITS(16); */\n        while (bits < 16) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        state.flags = hold;\n        if ((state.flags & 0xff) !== Z_DEFLATED) {\n          strm.msg = 'unknown compression method';\n          state.mode = BAD;\n          break;\n        }\n        if (state.flags & 0xe000) {\n          strm.msg = 'unknown header flags set';\n          state.mode = BAD;\n          break;\n        }\n        if (state.head) {\n          state.head.text = ((hold >> 8) & 1);\n        }\n        if ((state.flags & 0x0200) && (state.wrap & 4)) {\n          //=== CRC2(state.check, hold);\n          hbuf[0] = hold & 0xff;\n          hbuf[1] = (hold >>> 8) & 0xff;\n          state.check = crc32_1(state.check, hbuf, 2, 0);\n          //===//\n        }\n        //=== INITBITS();\n        hold = 0;\n        bits = 0;\n        //===//\n        state.mode = TIME;\n        /* falls through */\n      case TIME:\n        //=== NEEDBITS(32); */\n        while (bits < 32) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        if (state.head) {\n          state.head.time = hold;\n        }\n        if ((state.flags & 0x0200) && (state.wrap & 4)) {\n          //=== CRC4(state.check, hold)\n          hbuf[0] = hold & 0xff;\n          hbuf[1] = (hold >>> 8) & 0xff;\n          hbuf[2] = (hold >>> 16) & 0xff;\n          hbuf[3] = (hold >>> 24) & 0xff;\n          state.check = crc32_1(state.check, hbuf, 4, 0);\n          //===\n        }\n        //=== INITBITS();\n        hold = 0;\n        bits = 0;\n        //===//\n        state.mode = OS;\n        /* falls through */\n      case OS:\n        //=== NEEDBITS(16); */\n        while (bits < 16) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        if (state.head) {\n          state.head.xflags = (hold & 0xff);\n          state.head.os = (hold >> 8);\n        }\n        if ((state.flags & 0x0200) && (state.wrap & 4)) {\n          //=== CRC2(state.check, hold);\n          hbuf[0] = hold & 0xff;\n          hbuf[1] = (hold >>> 8) & 0xff;\n          state.check = crc32_1(state.check, hbuf, 2, 0);\n          //===//\n        }\n        //=== INITBITS();\n        hold = 0;\n        bits = 0;\n        //===//\n        state.mode = EXLEN;\n        /* falls through */\n      case EXLEN:\n        if (state.flags & 0x0400) {\n          //=== NEEDBITS(16); */\n          while (bits < 16) {\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          //===//\n          state.length = hold;\n          if (state.head) {\n            state.head.extra_len = hold;\n          }\n          if ((state.flags & 0x0200) && (state.wrap & 4)) {\n            //=== CRC2(state.check, hold);\n            hbuf[0] = hold & 0xff;\n            hbuf[1] = (hold >>> 8) & 0xff;\n            state.check = crc32_1(state.check, hbuf, 2, 0);\n            //===//\n          }\n          //=== INITBITS();\n          hold = 0;\n          bits = 0;\n          //===//\n        }\n        else if (state.head) {\n          state.head.extra = null/*Z_NULL*/;\n        }\n        state.mode = EXTRA;\n        /* falls through */\n      case EXTRA:\n        if (state.flags & 0x0400) {\n          copy = state.length;\n          if (copy > have) { copy = have; }\n          if (copy) {\n            if (state.head) {\n              len = state.head.extra_len - state.length;\n              if (!state.head.extra) {\n                // Use untyped array for more convenient processing later\n                state.head.extra = new Uint8Array(state.head.extra_len);\n              }\n              state.head.extra.set(\n                input.subarray(\n                  next,\n                  // extra field is limited to 65536 bytes\n                  // - no need for additional size check\n                  next + copy\n                ),\n                /*len + copy > state.head.extra_max - len ? state.head.extra_max : copy,*/\n                len\n              );\n              //zmemcpy(state.head.extra + len, next,\n              //        len + copy > state.head.extra_max ?\n              //        state.head.extra_max - len : copy);\n            }\n            if ((state.flags & 0x0200) && (state.wrap & 4)) {\n              state.check = crc32_1(state.check, input, copy, next);\n            }\n            have -= copy;\n            next += copy;\n            state.length -= copy;\n          }\n          if (state.length) { break inf_leave; }\n        }\n        state.length = 0;\n        state.mode = NAME;\n        /* falls through */\n      case NAME:\n        if (state.flags & 0x0800) {\n          if (have === 0) { break inf_leave; }\n          copy = 0;\n          do {\n            // TODO: 2 or 1 bytes?\n            len = input[next + copy++];\n            /* use constant limit because in js we should not preallocate memory */\n            if (state.head && len &&\n                (state.length < 65536 /*state.head.name_max*/)) {\n              state.head.name += String.fromCharCode(len);\n            }\n          } while (len && copy < have);\n\n          if ((state.flags & 0x0200) && (state.wrap & 4)) {\n            state.check = crc32_1(state.check, input, copy, next);\n          }\n          have -= copy;\n          next += copy;\n          if (len) { break inf_leave; }\n        }\n        else if (state.head) {\n          state.head.name = null;\n        }\n        state.length = 0;\n        state.mode = COMMENT;\n        /* falls through */\n      case COMMENT:\n        if (state.flags & 0x1000) {\n          if (have === 0) { break inf_leave; }\n          copy = 0;\n          do {\n            len = input[next + copy++];\n            /* use constant limit because in js we should not preallocate memory */\n            if (state.head && len &&\n                (state.length < 65536 /*state.head.comm_max*/)) {\n              state.head.comment += String.fromCharCode(len);\n            }\n          } while (len && copy < have);\n          if ((state.flags & 0x0200) && (state.wrap & 4)) {\n            state.check = crc32_1(state.check, input, copy, next);\n          }\n          have -= copy;\n          next += copy;\n          if (len) { break inf_leave; }\n        }\n        else if (state.head) {\n          state.head.comment = null;\n        }\n        state.mode = HCRC;\n        /* falls through */\n      case HCRC:\n        if (state.flags & 0x0200) {\n          //=== NEEDBITS(16); */\n          while (bits < 16) {\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          //===//\n          if ((state.wrap & 4) && hold !== (state.check & 0xffff)) {\n            strm.msg = 'header crc mismatch';\n            state.mode = BAD;\n            break;\n          }\n          //=== INITBITS();\n          hold = 0;\n          bits = 0;\n          //===//\n        }\n        if (state.head) {\n          state.head.hcrc = ((state.flags >> 9) & 1);\n          state.head.done = true;\n        }\n        strm.adler = state.check = 0;\n        state.mode = TYPE;\n        break;\n      case DICTID:\n        //=== NEEDBITS(32); */\n        while (bits < 32) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        strm.adler = state.check = zswap32(hold);\n        //=== INITBITS();\n        hold = 0;\n        bits = 0;\n        //===//\n        state.mode = DICT;\n        /* falls through */\n      case DICT:\n        if (state.havedict === 0) {\n          //--- RESTORE() ---\n          strm.next_out = put;\n          strm.avail_out = left;\n          strm.next_in = next;\n          strm.avail_in = have;\n          state.hold = hold;\n          state.bits = bits;\n          //---\n          return Z_NEED_DICT$1;\n        }\n        strm.adler = state.check = 1/*adler32(0L, Z_NULL, 0)*/;\n        state.mode = TYPE;\n        /* falls through */\n      case TYPE:\n        if (flush === Z_BLOCK || flush === Z_TREES) { break inf_leave; }\n        /* falls through */\n      case TYPEDO:\n        if (state.last) {\n          //--- BYTEBITS() ---//\n          hold >>>= bits & 7;\n          bits -= bits & 7;\n          //---//\n          state.mode = CHECK;\n          break;\n        }\n        //=== NEEDBITS(3); */\n        while (bits < 3) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        state.last = (hold & 0x01)/*BITS(1)*/;\n        //--- DROPBITS(1) ---//\n        hold >>>= 1;\n        bits -= 1;\n        //---//\n\n        switch ((hold & 0x03)/*BITS(2)*/) {\n          case 0:                             /* stored block */\n            //Tracev((stderr, \"inflate:     stored block%s\\n\",\n            //        state.last ? \" (last)\" : \"\"));\n            state.mode = STORED;\n            break;\n          case 1:                             /* fixed block */\n            fixedtables(state);\n            //Tracev((stderr, \"inflate:     fixed codes block%s\\n\",\n            //        state.last ? \" (last)\" : \"\"));\n            state.mode = LEN_;             /* decode codes */\n            if (flush === Z_TREES) {\n              //--- DROPBITS(2) ---//\n              hold >>>= 2;\n              bits -= 2;\n              //---//\n              break inf_leave;\n            }\n            break;\n          case 2:                             /* dynamic block */\n            //Tracev((stderr, \"inflate:     dynamic codes block%s\\n\",\n            //        state.last ? \" (last)\" : \"\"));\n            state.mode = TABLE;\n            break;\n          case 3:\n            strm.msg = 'invalid block type';\n            state.mode = BAD;\n        }\n        //--- DROPBITS(2) ---//\n        hold >>>= 2;\n        bits -= 2;\n        //---//\n        break;\n      case STORED:\n        //--- BYTEBITS() ---// /* go to byte boundary */\n        hold >>>= bits & 7;\n        bits -= bits & 7;\n        //---//\n        //=== NEEDBITS(32); */\n        while (bits < 32) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        if ((hold & 0xffff) !== ((hold >>> 16) ^ 0xffff)) {\n          strm.msg = 'invalid stored block lengths';\n          state.mode = BAD;\n          break;\n        }\n        state.length = hold & 0xffff;\n        //Tracev((stderr, \"inflate:       stored length %u\\n\",\n        //        state.length));\n        //=== INITBITS();\n        hold = 0;\n        bits = 0;\n        //===//\n        state.mode = COPY_;\n        if (flush === Z_TREES) { break inf_leave; }\n        /* falls through */\n      case COPY_:\n        state.mode = COPY;\n        /* falls through */\n      case COPY:\n        copy = state.length;\n        if (copy) {\n          if (copy > have) { copy = have; }\n          if (copy > left) { copy = left; }\n          if (copy === 0) { break inf_leave; }\n          //--- zmemcpy(put, next, copy); ---\n          output.set(input.subarray(next, next + copy), put);\n          //---//\n          have -= copy;\n          next += copy;\n          left -= copy;\n          put += copy;\n          state.length -= copy;\n          break;\n        }\n        //Tracev((stderr, \"inflate:       stored end\\n\"));\n        state.mode = TYPE;\n        break;\n      case TABLE:\n        //=== NEEDBITS(14); */\n        while (bits < 14) {\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n        }\n        //===//\n        state.nlen = (hold & 0x1f)/*BITS(5)*/ + 257;\n        //--- DROPBITS(5) ---//\n        hold >>>= 5;\n        bits -= 5;\n        //---//\n        state.ndist = (hold & 0x1f)/*BITS(5)*/ + 1;\n        //--- DROPBITS(5) ---//\n        hold >>>= 5;\n        bits -= 5;\n        //---//\n        state.ncode = (hold & 0x0f)/*BITS(4)*/ + 4;\n        //--- DROPBITS(4) ---//\n        hold >>>= 4;\n        bits -= 4;\n        //---//\n//#ifndef PKZIP_BUG_WORKAROUND\n        if (state.nlen > 286 || state.ndist > 30) {\n          strm.msg = 'too many length or distance symbols';\n          state.mode = BAD;\n          break;\n        }\n//#endif\n        //Tracev((stderr, \"inflate:       table sizes ok\\n\"));\n        state.have = 0;\n        state.mode = LENLENS;\n        /* falls through */\n      case LENLENS:\n        while (state.have < state.ncode) {\n          //=== NEEDBITS(3);\n          while (bits < 3) {\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          //===//\n          state.lens[order[state.have++]] = (hold & 0x07);//BITS(3);\n          //--- DROPBITS(3) ---//\n          hold >>>= 3;\n          bits -= 3;\n          //---//\n        }\n        while (state.have < 19) {\n          state.lens[order[state.have++]] = 0;\n        }\n        // We have separate tables & no pointers. 2 commented lines below not needed.\n        //state.next = state.codes;\n        //state.lencode = state.next;\n        // Switch to use dynamic table\n        state.lencode = state.lendyn;\n        state.lenbits = 7;\n\n        opts = { bits: state.lenbits };\n        ret = inftrees(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts);\n        state.lenbits = opts.bits;\n\n        if (ret) {\n          strm.msg = 'invalid code lengths set';\n          state.mode = BAD;\n          break;\n        }\n        //Tracev((stderr, \"inflate:       code lengths ok\\n\"));\n        state.have = 0;\n        state.mode = CODELENS;\n        /* falls through */\n      case CODELENS:\n        while (state.have < state.nlen + state.ndist) {\n          for (;;) {\n            here = state.lencode[hold & ((1 << state.lenbits) - 1)];/*BITS(state.lenbits)*/\n            here_bits = here >>> 24;\n            here_op = (here >>> 16) & 0xff;\n            here_val = here & 0xffff;\n\n            if ((here_bits) <= bits) { break; }\n            //--- PULLBYTE() ---//\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n            //---//\n          }\n          if (here_val < 16) {\n            //--- DROPBITS(here.bits) ---//\n            hold >>>= here_bits;\n            bits -= here_bits;\n            //---//\n            state.lens[state.have++] = here_val;\n          }\n          else {\n            if (here_val === 16) {\n              //=== NEEDBITS(here.bits + 2);\n              n = here_bits + 2;\n              while (bits < n) {\n                if (have === 0) { break inf_leave; }\n                have--;\n                hold += input[next++] << bits;\n                bits += 8;\n              }\n              //===//\n              //--- DROPBITS(here.bits) ---//\n              hold >>>= here_bits;\n              bits -= here_bits;\n              //---//\n              if (state.have === 0) {\n                strm.msg = 'invalid bit length repeat';\n                state.mode = BAD;\n                break;\n              }\n              len = state.lens[state.have - 1];\n              copy = 3 + (hold & 0x03);//BITS(2);\n              //--- DROPBITS(2) ---//\n              hold >>>= 2;\n              bits -= 2;\n              //---//\n            }\n            else if (here_val === 17) {\n              //=== NEEDBITS(here.bits + 3);\n              n = here_bits + 3;\n              while (bits < n) {\n                if (have === 0) { break inf_leave; }\n                have--;\n                hold += input[next++] << bits;\n                bits += 8;\n              }\n              //===//\n              //--- DROPBITS(here.bits) ---//\n              hold >>>= here_bits;\n              bits -= here_bits;\n              //---//\n              len = 0;\n              copy = 3 + (hold & 0x07);//BITS(3);\n              //--- DROPBITS(3) ---//\n              hold >>>= 3;\n              bits -= 3;\n              //---//\n            }\n            else {\n              //=== NEEDBITS(here.bits + 7);\n              n = here_bits + 7;\n              while (bits < n) {\n                if (have === 0) { break inf_leave; }\n                have--;\n                hold += input[next++] << bits;\n                bits += 8;\n              }\n              //===//\n              //--- DROPBITS(here.bits) ---//\n              hold >>>= here_bits;\n              bits -= here_bits;\n              //---//\n              len = 0;\n              copy = 11 + (hold & 0x7f);//BITS(7);\n              //--- DROPBITS(7) ---//\n              hold >>>= 7;\n              bits -= 7;\n              //---//\n            }\n            if (state.have + copy > state.nlen + state.ndist) {\n              strm.msg = 'invalid bit length repeat';\n              state.mode = BAD;\n              break;\n            }\n            while (copy--) {\n              state.lens[state.have++] = len;\n            }\n          }\n        }\n\n        /* handle error breaks in while */\n        if (state.mode === BAD) { break; }\n\n        /* check for end-of-block code (better have one) */\n        if (state.lens[256] === 0) {\n          strm.msg = 'invalid code -- missing end-of-block';\n          state.mode = BAD;\n          break;\n        }\n\n        /* build code tables -- note: do not change the lenbits or distbits\n           values here (9 and 6) without reading the comments in inftrees.h\n           concerning the ENOUGH constants, which depend on those values */\n        state.lenbits = 9;\n\n        opts = { bits: state.lenbits };\n        ret = inftrees(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts);\n        // We have separate tables & no pointers. 2 commented lines below not needed.\n        // state.next_index = opts.table_index;\n        state.lenbits = opts.bits;\n        // state.lencode = state.next;\n\n        if (ret) {\n          strm.msg = 'invalid literal/lengths set';\n          state.mode = BAD;\n          break;\n        }\n\n        state.distbits = 6;\n        //state.distcode.copy(state.codes);\n        // Switch to use dynamic table\n        state.distcode = state.distdyn;\n        opts = { bits: state.distbits };\n        ret = inftrees(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts);\n        // We have separate tables & no pointers. 2 commented lines below not needed.\n        // state.next_index = opts.table_index;\n        state.distbits = opts.bits;\n        // state.distcode = state.next;\n\n        if (ret) {\n          strm.msg = 'invalid distances set';\n          state.mode = BAD;\n          break;\n        }\n        //Tracev((stderr, 'inflate:       codes ok\\n'));\n        state.mode = LEN_;\n        if (flush === Z_TREES) { break inf_leave; }\n        /* falls through */\n      case LEN_:\n        state.mode = LEN;\n        /* falls through */\n      case LEN:\n        if (have >= 6 && left >= 258) {\n          //--- RESTORE() ---\n          strm.next_out = put;\n          strm.avail_out = left;\n          strm.next_in = next;\n          strm.avail_in = have;\n          state.hold = hold;\n          state.bits = bits;\n          //---\n          inffast(strm, _out);\n          //--- LOAD() ---\n          put = strm.next_out;\n          output = strm.output;\n          left = strm.avail_out;\n          next = strm.next_in;\n          input = strm.input;\n          have = strm.avail_in;\n          hold = state.hold;\n          bits = state.bits;\n          //---\n\n          if (state.mode === TYPE) {\n            state.back = -1;\n          }\n          break;\n        }\n        state.back = 0;\n        for (;;) {\n          here = state.lencode[hold & ((1 << state.lenbits) - 1)];  /*BITS(state.lenbits)*/\n          here_bits = here >>> 24;\n          here_op = (here >>> 16) & 0xff;\n          here_val = here & 0xffff;\n\n          if (here_bits <= bits) { break; }\n          //--- PULLBYTE() ---//\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n          //---//\n        }\n        if (here_op && (here_op & 0xf0) === 0) {\n          last_bits = here_bits;\n          last_op = here_op;\n          last_val = here_val;\n          for (;;) {\n            here = state.lencode[last_val +\n                    ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];\n            here_bits = here >>> 24;\n            here_op = (here >>> 16) & 0xff;\n            here_val = here & 0xffff;\n\n            if ((last_bits + here_bits) <= bits) { break; }\n            //--- PULLBYTE() ---//\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n            //---//\n          }\n          //--- DROPBITS(last.bits) ---//\n          hold >>>= last_bits;\n          bits -= last_bits;\n          //---//\n          state.back += last_bits;\n        }\n        //--- DROPBITS(here.bits) ---//\n        hold >>>= here_bits;\n        bits -= here_bits;\n        //---//\n        state.back += here_bits;\n        state.length = here_val;\n        if (here_op === 0) {\n          //Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?\n          //        \"inflate:         literal '%c'\\n\" :\n          //        \"inflate:         literal 0x%02x\\n\", here.val));\n          state.mode = LIT;\n          break;\n        }\n        if (here_op & 32) {\n          //Tracevv((stderr, \"inflate:         end of block\\n\"));\n          state.back = -1;\n          state.mode = TYPE;\n          break;\n        }\n        if (here_op & 64) {\n          strm.msg = 'invalid literal/length code';\n          state.mode = BAD;\n          break;\n        }\n        state.extra = here_op & 15;\n        state.mode = LENEXT;\n        /* falls through */\n      case LENEXT:\n        if (state.extra) {\n          //=== NEEDBITS(state.extra);\n          n = state.extra;\n          while (bits < n) {\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          //===//\n          state.length += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;\n          //--- DROPBITS(state.extra) ---//\n          hold >>>= state.extra;\n          bits -= state.extra;\n          //---//\n          state.back += state.extra;\n        }\n        //Tracevv((stderr, \"inflate:         length %u\\n\", state.length));\n        state.was = state.length;\n        state.mode = DIST;\n        /* falls through */\n      case DIST:\n        for (;;) {\n          here = state.distcode[hold & ((1 << state.distbits) - 1)];/*BITS(state.distbits)*/\n          here_bits = here >>> 24;\n          here_op = (here >>> 16) & 0xff;\n          here_val = here & 0xffff;\n\n          if ((here_bits) <= bits) { break; }\n          //--- PULLBYTE() ---//\n          if (have === 0) { break inf_leave; }\n          have--;\n          hold += input[next++] << bits;\n          bits += 8;\n          //---//\n        }\n        if ((here_op & 0xf0) === 0) {\n          last_bits = here_bits;\n          last_op = here_op;\n          last_val = here_val;\n          for (;;) {\n            here = state.distcode[last_val +\n                    ((hold & ((1 << (last_bits + last_op)) - 1))/*BITS(last.bits + last.op)*/ >> last_bits)];\n            here_bits = here >>> 24;\n            here_op = (here >>> 16) & 0xff;\n            here_val = here & 0xffff;\n\n            if ((last_bits + here_bits) <= bits) { break; }\n            //--- PULLBYTE() ---//\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n            //---//\n          }\n          //--- DROPBITS(last.bits) ---//\n          hold >>>= last_bits;\n          bits -= last_bits;\n          //---//\n          state.back += last_bits;\n        }\n        //--- DROPBITS(here.bits) ---//\n        hold >>>= here_bits;\n        bits -= here_bits;\n        //---//\n        state.back += here_bits;\n        if (here_op & 64) {\n          strm.msg = 'invalid distance code';\n          state.mode = BAD;\n          break;\n        }\n        state.offset = here_val;\n        state.extra = (here_op) & 15;\n        state.mode = DISTEXT;\n        /* falls through */\n      case DISTEXT:\n        if (state.extra) {\n          //=== NEEDBITS(state.extra);\n          n = state.extra;\n          while (bits < n) {\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          //===//\n          state.offset += hold & ((1 << state.extra) - 1)/*BITS(state.extra)*/;\n          //--- DROPBITS(state.extra) ---//\n          hold >>>= state.extra;\n          bits -= state.extra;\n          //---//\n          state.back += state.extra;\n        }\n//#ifdef INFLATE_STRICT\n        if (state.offset > state.dmax) {\n          strm.msg = 'invalid distance too far back';\n          state.mode = BAD;\n          break;\n        }\n//#endif\n        //Tracevv((stderr, \"inflate:         distance %u\\n\", state.offset));\n        state.mode = MATCH;\n        /* falls through */\n      case MATCH:\n        if (left === 0) { break inf_leave; }\n        copy = _out - left;\n        if (state.offset > copy) {         /* copy from window */\n          copy = state.offset - copy;\n          if (copy > state.whave) {\n            if (state.sane) {\n              strm.msg = 'invalid distance too far back';\n              state.mode = BAD;\n              break;\n            }\n// (!) This block is disabled in zlib defaults,\n// don't enable it for binary compatibility\n//#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR\n//          Trace((stderr, \"inflate.c too far\\n\"));\n//          copy -= state.whave;\n//          if (copy > state.length) { copy = state.length; }\n//          if (copy > left) { copy = left; }\n//          left -= copy;\n//          state.length -= copy;\n//          do {\n//            output[put++] = 0;\n//          } while (--copy);\n//          if (state.length === 0) { state.mode = LEN; }\n//          break;\n//#endif\n          }\n          if (copy > state.wnext) {\n            copy -= state.wnext;\n            from = state.wsize - copy;\n          }\n          else {\n            from = state.wnext - copy;\n          }\n          if (copy > state.length) { copy = state.length; }\n          from_source = state.window;\n        }\n        else {                              /* copy from output */\n          from_source = output;\n          from = put - state.offset;\n          copy = state.length;\n        }\n        if (copy > left) { copy = left; }\n        left -= copy;\n        state.length -= copy;\n        do {\n          output[put++] = from_source[from++];\n        } while (--copy);\n        if (state.length === 0) { state.mode = LEN; }\n        break;\n      case LIT:\n        if (left === 0) { break inf_leave; }\n        output[put++] = state.length;\n        left--;\n        state.mode = LEN;\n        break;\n      case CHECK:\n        if (state.wrap) {\n          //=== NEEDBITS(32);\n          while (bits < 32) {\n            if (have === 0) { break inf_leave; }\n            have--;\n            // Use '|' instead of '+' to make sure that result is signed\n            hold |= input[next++] << bits;\n            bits += 8;\n          }\n          //===//\n          _out -= left;\n          strm.total_out += _out;\n          state.total += _out;\n          if ((state.wrap & 4) && _out) {\n            strm.adler = state.check =\n                /*UPDATE_CHECK(state.check, put - _out, _out);*/\n                (state.flags ? crc32_1(state.check, output, _out, put - _out) : adler32_1(state.check, output, _out, put - _out));\n\n          }\n          _out = left;\n          // NB: crc32 stored as signed 32-bit int, zswap32 returns signed too\n          if ((state.wrap & 4) && (state.flags ? hold : zswap32(hold)) !== state.check) {\n            strm.msg = 'incorrect data check';\n            state.mode = BAD;\n            break;\n          }\n          //=== INITBITS();\n          hold = 0;\n          bits = 0;\n          //===//\n          //Tracev((stderr, \"inflate:   check matches trailer\\n\"));\n        }\n        state.mode = LENGTH;\n        /* falls through */\n      case LENGTH:\n        if (state.wrap && state.flags) {\n          //=== NEEDBITS(32);\n          while (bits < 32) {\n            if (have === 0) { break inf_leave; }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          //===//\n          if ((state.wrap & 4) && hold !== (state.total & 0xffffffff)) {\n            strm.msg = 'incorrect length check';\n            state.mode = BAD;\n            break;\n          }\n          //=== INITBITS();\n          hold = 0;\n          bits = 0;\n          //===//\n          //Tracev((stderr, \"inflate:   length matches trailer\\n\"));\n        }\n        state.mode = DONE;\n        /* falls through */\n      case DONE:\n        ret = Z_STREAM_END$1;\n        break inf_leave;\n      case BAD:\n        ret = Z_DATA_ERROR$1;\n        break inf_leave;\n      case MEM:\n        return Z_MEM_ERROR$1;\n      case SYNC:\n        /* falls through */\n      default:\n        return Z_STREAM_ERROR$1;\n    }\n  }\n\n  // inf_leave <- here is real place for \"goto inf_leave\", emulated via \"break inf_leave\"\n\n  /*\n     Return from inflate(), updating the total counts and the check value.\n     If there was no progress during the inflate() call, return a buffer\n     error.  Call updatewindow() to create and/or update the window state.\n     Note: a memory error from inflate() is non-recoverable.\n   */\n\n  //--- RESTORE() ---\n  strm.next_out = put;\n  strm.avail_out = left;\n  strm.next_in = next;\n  strm.avail_in = have;\n  state.hold = hold;\n  state.bits = bits;\n  //---\n\n  if (state.wsize || (_out !== strm.avail_out && state.mode < BAD &&\n                      (state.mode < CHECK || flush !== Z_FINISH$1))) {\n    if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out)) ;\n  }\n  _in -= strm.avail_in;\n  _out -= strm.avail_out;\n  strm.total_in += _in;\n  strm.total_out += _out;\n  state.total += _out;\n  if ((state.wrap & 4) && _out) {\n    strm.adler = state.check = /*UPDATE_CHECK(state.check, strm.next_out - _out, _out);*/\n      (state.flags ? crc32_1(state.check, output, _out, strm.next_out - _out) : adler32_1(state.check, output, _out, strm.next_out - _out));\n  }\n  strm.data_type = state.bits + (state.last ? 64 : 0) +\n                    (state.mode === TYPE ? 128 : 0) +\n                    (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0);\n  if (((_in === 0 && _out === 0) || flush === Z_FINISH$1) && ret === Z_OK$1) {\n    ret = Z_BUF_ERROR;\n  }\n  return ret;\n};\n\n\nconst inflateEnd = (strm) => {\n\n  if (inflateStateCheck(strm)) {\n    return Z_STREAM_ERROR$1;\n  }\n\n  let state = strm.state;\n  if (state.window) {\n    state.window = null;\n  }\n  strm.state = null;\n  return Z_OK$1;\n};\n\n\nconst inflateGetHeader = (strm, head) => {\n\n  /* check state */\n  if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1; }\n  const state = strm.state;\n  if ((state.wrap & 2) === 0) { return Z_STREAM_ERROR$1; }\n\n  /* save header structure */\n  state.head = head;\n  head.done = false;\n  return Z_OK$1;\n};\n\n\nconst inflateSetDictionary = (strm, dictionary) => {\n  const dictLength = dictionary.length;\n\n  let state;\n  let dictid;\n  let ret;\n\n  /* check state */\n  if (inflateStateCheck(strm)) { return Z_STREAM_ERROR$1; }\n  state = strm.state;\n\n  if (state.wrap !== 0 && state.mode !== DICT) {\n    return Z_STREAM_ERROR$1;\n  }\n\n  /* check for correct dictionary identifier */\n  if (state.mode === DICT) {\n    dictid = 1; /* adler32(0, null, 0)*/\n    /* dictid = adler32(dictid, dictionary, dictLength); */\n    dictid = adler32_1(dictid, dictionary, dictLength, 0);\n    if (dictid !== state.check) {\n      return Z_DATA_ERROR$1;\n    }\n  }\n  /* copy dictionary to window using updatewindow(), which will amend the\n   existing dictionary if appropriate */\n  ret = updatewindow(strm, dictionary, dictLength, dictLength);\n  if (ret) {\n    state.mode = MEM;\n    return Z_MEM_ERROR$1;\n  }\n  state.havedict = 1;\n  // Tracev((stderr, \"inflate:   dictionary set\\n\"));\n  return Z_OK$1;\n};\n\n\nvar inflateReset_1 = inflateReset;\nvar inflateReset2_1 = inflateReset2;\nvar inflateResetKeep_1 = inflateResetKeep;\nvar inflateInit_1 = inflateInit;\nvar inflateInit2_1 = inflateInit2;\nvar inflate_2$1 = inflate$2;\nvar inflateEnd_1 = inflateEnd;\nvar inflateGetHeader_1 = inflateGetHeader;\nvar inflateSetDictionary_1 = inflateSetDictionary;\nvar inflateInfo = 'pako inflate (from Nodeca project)';\n\n/* Not implemented\nmodule.exports.inflateCodesUsed = inflateCodesUsed;\nmodule.exports.inflateCopy = inflateCopy;\nmodule.exports.inflateGetDictionary = inflateGetDictionary;\nmodule.exports.inflateMark = inflateMark;\nmodule.exports.inflatePrime = inflatePrime;\nmodule.exports.inflateSync = inflateSync;\nmodule.exports.inflateSyncPoint = inflateSyncPoint;\nmodule.exports.inflateUndermine = inflateUndermine;\nmodule.exports.inflateValidate = inflateValidate;\n*/\n\nvar inflate_1$2 = {\n\tinflateReset: inflateReset_1,\n\tinflateReset2: inflateReset2_1,\n\tinflateResetKeep: inflateResetKeep_1,\n\tinflateInit: inflateInit_1,\n\tinflateInit2: inflateInit2_1,\n\tinflate: inflate_2$1,\n\tinflateEnd: inflateEnd_1,\n\tinflateGetHeader: inflateGetHeader_1,\n\tinflateSetDictionary: inflateSetDictionary_1,\n\tinflateInfo: inflateInfo\n};\n\n// (C) 1995-2013 Jean-loup Gailly and Mark Adler\n// (C) 2014-2017 Vitaly Puzrin and Andrey Tupitsin\n//\n// This software is provided 'as-is', without any express or implied\n// warranty. In no event will the authors be held liable for any damages\n// arising from the use of this software.\n//\n// Permission is granted to anyone to use this software for any purpose,\n// including commercial applications, and to alter it and redistribute it\n// freely, subject to the following restrictions:\n//\n// 1. The origin of this software must not be misrepresented; you must not\n//   claim that you wrote the original software. If you use this software\n//   in a product, an acknowledgment in the product documentation would be\n//   appreciated but is not required.\n// 2. Altered source versions must be plainly marked as such, and must not be\n//   misrepresented as being the original software.\n// 3. This notice may not be removed or altered from any source distribution.\n\nfunction GZheader() {\n  /* true if compressed data believed to be text */\n  this.text       = 0;\n  /* modification time */\n  this.time       = 0;\n  /* extra flags (not used when writing a gzip file) */\n  this.xflags     = 0;\n  /* operating system */\n  this.os         = 0;\n  /* pointer to extra field or Z_NULL if none */\n  this.extra      = null;\n  /* extra field length (valid if extra != Z_NULL) */\n  this.extra_len  = 0; // Actually, we don't need it in JS,\n                       // but leave for few code modifications\n\n  //\n  // Setup limits is not necessary because in js we should not preallocate memory\n  // for inflate use constant limit in 65536 bytes\n  //\n\n  /* space at extra (only when reading header) */\n  // this.extra_max  = 0;\n  /* pointer to zero-terminated file name or Z_NULL */\n  this.name       = '';\n  /* space at name (only when reading header) */\n  // this.name_max   = 0;\n  /* pointer to zero-terminated comment or Z_NULL */\n  this.comment    = '';\n  /* space at comment (only when reading header) */\n  // this.comm_max   = 0;\n  /* true if there was or will be a header crc */\n  this.hcrc       = 0;\n  /* true when done reading gzip header (not used when writing a gzip file) */\n  this.done       = false;\n}\n\nvar gzheader = GZheader;\n\nconst toString = Object.prototype.toString;\n\n/* Public constants ==========================================================*/\n/* ===========================================================================*/\n\nconst {\n  Z_NO_FLUSH, Z_FINISH,\n  Z_OK, Z_STREAM_END, Z_NEED_DICT, Z_STREAM_ERROR, Z_DATA_ERROR, Z_MEM_ERROR\n} = constants$2;\n\n/* ===========================================================================*/\n\n\n/**\n * class Inflate\n *\n * Generic JS-style wrapper for zlib calls. If you don't need\n * streaming behaviour - use more simple functions: [[inflate]]\n * and [[inflateRaw]].\n **/\n\n/* internal\n * inflate.chunks -> Array\n *\n * Chunks of output data, if [[Inflate#onData]] not overridden.\n **/\n\n/**\n * Inflate.result -> Uint8Array|String\n *\n * Uncompressed result, generated by default [[Inflate#onData]]\n * and [[Inflate#onEnd]] handlers. Filled after you push last chunk\n * (call [[Inflate#push]] with `Z_FINISH` / `true` param).\n **/\n\n/**\n * Inflate.err -> Number\n *\n * Error code after inflate finished. 0 (Z_OK) on success.\n * Should be checked if broken data possible.\n **/\n\n/**\n * Inflate.msg -> String\n *\n * Error message, if [[Inflate.err]] != 0\n **/\n\n\n/**\n * new Inflate(options)\n * - options (Object): zlib inflate options.\n *\n * Creates new inflator instance with specified params. Throws exception\n * on bad params. Supported options:\n *\n * - `windowBits`\n * - `dictionary`\n *\n * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)\n * for more information on these.\n *\n * Additional options, for internal needs:\n *\n * - `chunkSize` - size of generated data chunks (16K by default)\n * - `raw` (Boolean) - do raw inflate\n * - `to` (String) - if equal to 'string', then result will be converted\n *   from utf8 to utf16 (javascript) string. When string output requested,\n *   chunk length can differ from `chunkSize`, depending on content.\n *\n * By default, when no options set, autodetect deflate/gzip data format via\n * wrapper header.\n *\n * ##### Example:\n *\n * ```javascript\n * const pako = require('pako')\n * const chunk1 = new Uint8Array([1,2,3,4,5,6,7,8,9])\n * const chunk2 = new Uint8Array([10,11,12,13,14,15,16,17,18,19]);\n *\n * const inflate = new pako.Inflate({ level: 3});\n *\n * inflate.push(chunk1, false);\n * inflate.push(chunk2, true);  // true -> last chunk\n *\n * if (inflate.err) { throw new Error(inflate.err); }\n *\n * console.log(inflate.result);\n * ```\n **/\nfunction Inflate$1(options) {\n  this.options = common.assign({\n    chunkSize: 1024 * 64,\n    windowBits: 15,\n    to: ''\n  }, options || {});\n\n  const opt = this.options;\n\n  // Force window size for `raw` data, if not set directly,\n  // because we have no header for autodetect.\n  if (opt.raw && (opt.windowBits >= 0) && (opt.windowBits < 16)) {\n    opt.windowBits = -opt.windowBits;\n    if (opt.windowBits === 0) { opt.windowBits = -15; }\n  }\n\n  // If `windowBits` not defined (and mode not raw) - set autodetect flag for gzip/deflate\n  if ((opt.windowBits >= 0) && (opt.windowBits < 16) &&\n      !(options && options.windowBits)) {\n    opt.windowBits += 32;\n  }\n\n  // Gzip header has no info about windows size, we can do autodetect only\n  // for deflate. So, if window size not set, force it to max when gzip possible\n  if ((opt.windowBits > 15) && (opt.windowBits < 48)) {\n    // bit 3 (16) -> gzipped data\n    // bit 4 (32) -> autodetect gzip/deflate\n    if ((opt.windowBits & 15) === 0) {\n      opt.windowBits |= 15;\n    }\n  }\n\n  this.err    = 0;      // error code, if happens (0 = Z_OK)\n  this.msg    = '';     // error message\n  this.ended  = false;  // used to avoid multiple onEnd() calls\n  this.chunks = [];     // chunks of compressed data\n\n  this.strm   = new zstream();\n  this.strm.avail_out = 0;\n\n  let status  = inflate_1$2.inflateInit2(\n    this.strm,\n    opt.windowBits\n  );\n\n  if (status !== Z_OK) {\n    throw new Error(messages[status]);\n  }\n\n  this.header = new gzheader();\n\n  inflate_1$2.inflateGetHeader(this.strm, this.header);\n\n  // Setup dictionary\n  if (opt.dictionary) {\n    // Convert data if needed\n    if (typeof opt.dictionary === 'string') {\n      opt.dictionary = strings.string2buf(opt.dictionary);\n    } else if (toString.call(opt.dictionary) === '[object ArrayBuffer]') {\n      opt.dictionary = new Uint8Array(opt.dictionary);\n    }\n    if (opt.raw) { //In raw mode we need to set the dictionary early\n      status = inflate_1$2.inflateSetDictionary(this.strm, opt.dictionary);\n      if (status !== Z_OK) {\n        throw new Error(messages[status]);\n      }\n    }\n  }\n}\n\n/**\n * Inflate#push(data[, flush_mode]) -> Boolean\n * - data (Uint8Array|ArrayBuffer): input data\n * - flush_mode (Number|Boolean): 0..6 for corresponding Z_NO_FLUSH..Z_TREE\n *   flush modes. See constants. Skipped or `false` means Z_NO_FLUSH,\n *   `true` means Z_FINISH.\n *\n * Sends input data to inflate pipe, generating [[Inflate#onData]] calls with\n * new output chunks. Returns `true` on success. If end of stream detected,\n * [[Inflate#onEnd]] will be called.\n *\n * `flush_mode` is not needed for normal operation, because end of stream\n * detected automatically. You may try to use it for advanced things, but\n * this functionality was not tested.\n *\n * On fail call [[Inflate#onEnd]] with error code and return false.\n *\n * ##### Example\n *\n * ```javascript\n * push(chunk, false); // push one of data chunks\n * ...\n * push(chunk, true);  // push last chunk\n * ```\n **/\nInflate$1.prototype.push = function (data, flush_mode) {\n  const strm = this.strm;\n  const chunkSize = this.options.chunkSize;\n  const dictionary = this.options.dictionary;\n  let status, _flush_mode, last_avail_out;\n\n  if (this.ended) return false;\n\n  if (flush_mode === ~~flush_mode) _flush_mode = flush_mode;\n  else _flush_mode = flush_mode === true ? Z_FINISH : Z_NO_FLUSH;\n\n  // Convert data if needed\n  if (toString.call(data) === '[object ArrayBuffer]') {\n    strm.input = new Uint8Array(data);\n  } else {\n    strm.input = data;\n  }\n\n  strm.next_in = 0;\n  strm.avail_in = strm.input.length;\n\n  for (;;) {\n    if (strm.avail_out === 0) {\n      strm.output = new Uint8Array(chunkSize);\n      strm.next_out = 0;\n      strm.avail_out = chunkSize;\n    }\n\n    status = inflate_1$2.inflate(strm, _flush_mode);\n\n    if (status === Z_NEED_DICT && dictionary) {\n      status = inflate_1$2.inflateSetDictionary(strm, dictionary);\n\n      if (status === Z_OK) {\n        status = inflate_1$2.inflate(strm, _flush_mode);\n      } else if (status === Z_DATA_ERROR) {\n        // Replace code with more verbose\n        status = Z_NEED_DICT;\n      }\n    }\n\n    // Skip snyc markers if more data follows and not raw mode\n    while (strm.avail_in > 0 &&\n           status === Z_STREAM_END &&\n           strm.state.wrap > 0 &&\n           data[strm.next_in] !== 0)\n    {\n      inflate_1$2.inflateReset(strm);\n      status = inflate_1$2.inflate(strm, _flush_mode);\n    }\n\n    switch (status) {\n      case Z_STREAM_ERROR:\n      case Z_DATA_ERROR:\n      case Z_NEED_DICT:\n      case Z_MEM_ERROR:\n        this.onEnd(status);\n        this.ended = true;\n        return false;\n    }\n\n    // Remember real `avail_out` value, because we may patch out buffer content\n    // to align utf8 strings boundaries.\n    last_avail_out = strm.avail_out;\n\n    if (strm.next_out) {\n      if (strm.avail_out === 0 || status === Z_STREAM_END) {\n\n        if (this.options.to === 'string') {\n\n          let next_out_utf8 = strings.utf8border(strm.output, strm.next_out);\n\n          let tail = strm.next_out - next_out_utf8;\n          let utf8str = strings.buf2string(strm.output, next_out_utf8);\n\n          // move tail & realign counters\n          strm.next_out = tail;\n          strm.avail_out = chunkSize - tail;\n          if (tail) strm.output.set(strm.output.subarray(next_out_utf8, next_out_utf8 + tail), 0);\n\n          this.onData(utf8str);\n\n        } else {\n          this.onData(strm.output.length === strm.next_out ? strm.output : strm.output.subarray(0, strm.next_out));\n        }\n      }\n    }\n\n    // Must repeat iteration if out buffer is full\n    if (status === Z_OK && last_avail_out === 0) continue;\n\n    // Finalize if end of stream reached.\n    if (status === Z_STREAM_END) {\n      status = inflate_1$2.inflateEnd(this.strm);\n      this.onEnd(status);\n      this.ended = true;\n      return true;\n    }\n\n    if (strm.avail_in === 0) break;\n  }\n\n  return true;\n};\n\n\n/**\n * Inflate#onData(chunk) -> Void\n * - chunk (Uint8Array|String): output data. When string output requested,\n *   each chunk will be string.\n *\n * By default, stores data blocks in `chunks[]` property and glue\n * those in `onEnd`. Override this handler, if you need another behaviour.\n **/\nInflate$1.prototype.onData = function (chunk) {\n  this.chunks.push(chunk);\n};\n\n\n/**\n * Inflate#onEnd(status) -> Void\n * - status (Number): inflate status. 0 (Z_OK) on success,\n *   other if not.\n *\n * Called either after you tell inflate that the input stream is\n * complete (Z_FINISH). By default - join collected chunks,\n * free memory and fill `results` / `err` properties.\n **/\nInflate$1.prototype.onEnd = function (status) {\n  // On success - join\n  if (status === Z_OK) {\n    if (this.options.to === 'string') {\n      this.result = this.chunks.join('');\n    } else {\n      this.result = common.flattenChunks(this.chunks);\n    }\n  }\n  this.chunks = [];\n  this.err = status;\n  this.msg = this.strm.msg;\n};\n\n\n/**\n * inflate(data[, options]) -> Uint8Array|String\n * - data (Uint8Array|ArrayBuffer): input data to decompress.\n * - options (Object): zlib inflate options.\n *\n * Decompress `data` with inflate/ungzip and `options`. Autodetect\n * format via wrapper header by default. That's why we don't provide\n * separate `ungzip` method.\n *\n * Supported options are:\n *\n * - windowBits\n *\n * [http://zlib.net/manual.html#Advanced](http://zlib.net/manual.html#Advanced)\n * for more information.\n *\n * Sugar (options):\n *\n * - `raw` (Boolean) - say that we work with raw stream, if you don't wish to specify\n *   negative windowBits implicitly.\n * - `to` (String) - if equal to 'string', then result will be converted\n *   from utf8 to utf16 (javascript) string. When string output requested,\n *   chunk length can differ from `chunkSize`, depending on content.\n *\n *\n * ##### Example:\n *\n * ```javascript\n * const pako = require('pako');\n * const input = pako.deflate(new Uint8Array([1,2,3,4,5,6,7,8,9]));\n * let output;\n *\n * try {\n *   output = pako.inflate(input);\n * } catch (err) {\n *   console.log(err);\n * }\n * ```\n **/\nfunction inflate$1(input, options) {\n  const inflator = new Inflate$1(options);\n\n  inflator.push(input);\n\n  // That will never happens, if you don't cheat with options :)\n  if (inflator.err) throw inflator.msg || messages[inflator.err];\n\n  return inflator.result;\n}\n\n\n/**\n * inflateRaw(data[, options]) -> Uint8Array|String\n * - data (Uint8Array|ArrayBuffer): input data to decompress.\n * - options (Object): zlib inflate options.\n *\n * The same as [[inflate]], but creates raw data, without wrapper\n * (header and adler32 crc).\n **/\nfunction inflateRaw$1(input, options) {\n  options = options || {};\n  options.raw = true;\n  return inflate$1(input, options);\n}\n\n\n/**\n * ungzip(data[, options]) -> Uint8Array|String\n * - data (Uint8Array|ArrayBuffer): input data to decompress.\n * - options (Object): zlib inflate options.\n *\n * Just shortcut to [[inflate]], because it autodetects format\n * by header.content. Done for convenience.\n **/\n\n\nvar Inflate_1$1 = Inflate$1;\nvar inflate_2 = inflate$1;\nvar inflateRaw_1$1 = inflateRaw$1;\nvar ungzip$1 = inflate$1;\nvar constants = constants$2;\n\nvar inflate_1$1 = {\n\tInflate: Inflate_1$1,\n\tinflate: inflate_2,\n\tinflateRaw: inflateRaw_1$1,\n\tungzip: ungzip$1,\n\tconstants: constants\n};\n\nconst { Deflate, deflate, deflateRaw, gzip } = deflate_1$1;\n\nconst { Inflate, inflate, inflateRaw, ungzip } = inflate_1$1;\n\n\n\nvar Deflate_1 = Deflate;\nvar deflate_1 = deflate;\nvar deflateRaw_1 = deflateRaw;\nvar gzip_1 = gzip;\nvar Inflate_1 = Inflate;\nvar inflate_1 = inflate;\nvar inflateRaw_1 = inflateRaw;\nvar ungzip_1 = ungzip;\nvar constants_1 = constants$2;\n\n\nexport { Deflate_1 as Deflate, Inflate_1 as Inflate, constants_1 as constants, deflate_1 as deflate, deflateRaw_1 as deflateRaw, gzip_1 as gzip, inflate_1 as inflate, inflateRaw_1 as inflateRaw, ungzip_1 as ungzip };\n","\nimport {ungzip, gzip, deflateRaw, inflateRaw, inflate} from \"./pako.esm.js\"\n\n\nconst FEXTRA = 4;  // gzip spec F.EXTRA flag\n\nfunction isgzipped(data) {\n    const b = ArrayBuffer.isView(data) ? data : new Uint8Array(data);\n    return b[0] ===31 && b[1] === 139;\n}\n\n/**\n * Pako does not properly ungzip block compressed files if > 1 block is present.  Test for bgzip and use wrapper.\n */\nfunction ungzip_blocks(data) {\n    const ba = ArrayBuffer.isView(data) ? data : new Uint8Array(data);\n    const b = ba[3] & FEXTRA;\n    if (b !== 0 && ba[12] === 66 && ba[13] === 67) {\n        return unbgzf(ba.buffer);\n    } else {\n        return ungzip(ba);\n    }\n}\n\n// Uncompress data,  assumed to be series of bgzipped blocks\nfunction unbgzf(data, lim) {\n\n    const oBlockList = [];\n    let ptr = 0;\n    let totalSize = 0;\n\n    lim = lim || data.byteLength - 18;\n\n    while (ptr < lim) {\n        try {\n            const ba = ArrayBuffer.isView(data) ? data : new Uint8Array(data, ptr, 18);\n            const xlen = (ba[11] << 8) | (ba[10]);\n            const flg = ba[3];\n            const fextra = flg & FEXTRA;\n            const si1 = ba[12];\n            const si2 = ba[13];\n            const slen = (ba[15] << 8) | (ba[14]);\n            const bsize = ((ba[17] << 8) | (ba[16])) + 1;\n            const start = 12 + xlen + ptr;    // Start of CDATA\n            const bytesLeft = data.byteLength - start;\n            const cDataSize = bsize - xlen - 19;\n            if (bytesLeft < cDataSize || cDataSize <= 0) break;\n\n            const a = new Uint8Array(data, start, cDataSize);\n            const unc = inflateRaw(a);\n\n            // const inflate = new Zlib.RawInflate(a);\n            // const unc = inflate.decompress();\n\n            ptr += (cDataSize - 1) + 26; //inflate.ip + 26\n            totalSize += unc.byteLength;\n            oBlockList.push(unc);\n        } catch (e) {\n            console.error(e)\n            break;\n        }\n    }\n\n    // Concatenate decompressed blocks\n    if (oBlockList.length === 1) {\n        return oBlockList[0];\n    } else {\n        const out = new Uint8Array(totalSize);\n        let cursor = 0;\n        for (let i = 0; i < oBlockList.length; ++i) {\n            var b = new Uint8Array(oBlockList[i]);\n            arrayCopy(b, 0, out, cursor, b.length);\n            cursor += b.length;\n        }\n        return out;\n    }\n}\n\nfunction bgzBlockSize(data) {\n    const ba = ArrayBuffer.isView(data) ? data : new Uint8Array(data);\n    const bsize = (ba[17] << 8 | ba[16]) + 1;\n    return bsize;\n}\n\n// From Thomas Down's zlib implementation\n\nconst testArray = new Uint8Array(1);\nconst hasSubarray = (typeof testArray.subarray === 'function');\n\nfunction arrayCopy(src, srcOffset, dest, destOffset, count) {\n    if (count === 0) {\n        return;\n    }\n    if (!src) {\n        throw \"Undef src\";\n    } else if (!dest) {\n        throw \"Undef dest\";\n    }\n    if (srcOffset === 0 && count === src.length) {\n        arrayCopy_fast(src, dest, destOffset);\n    } else if (hasSubarray) {\n        arrayCopy_fast(src.subarray(srcOffset, srcOffset + count), dest, destOffset);\n    } else if (src.BYTES_PER_ELEMENT === 1 && count > 100) {\n        arrayCopy_fast(new Uint8Array(src.buffer, src.byteOffset + srcOffset, count), dest, destOffset);\n    } else {\n        arrayCopy_slow(src, srcOffset, dest, destOffset, count);\n    }\n}\n\nfunction arrayCopy_slow(src, srcOffset, dest, destOffset, count) {\n    for (let i = 0; i < count; ++i) {\n        dest[destOffset + i] = src[srcOffset + i];\n    }\n}\n\nfunction arrayCopy_fast(src, dest, destOffset) {\n    dest.set(src, destOffset);\n}\n\n\n/**\n * Compress string and encode in a url safe form\n * @param s\n */\nfunction compressString(str) {\n\n    const bytes = new Uint8Array(str.length);\n    for (var i = 0; i < str.length; i++) {\n        bytes[i] = str.charCodeAt(i);\n    }\n    const compressedBytes = new deflateRaw(bytes);            // UInt8Arry\n    const compressedString = String.fromCharCode.apply(null, compressedBytes);      // Convert to string\n    let enc = btoa(compressedString);\n    return enc.replace(/\\+/g, '.').replace(/\\//g, '_').replace(/=/g, '-');   // URL safe\n}\n\n/**\n * Uncompress the url-safe encoded compressed string, presumably created by compressString above\n *\n * @param enc\n * @returns {string}\n */\nfunction uncompressString(enc) {\n\n    enc = enc.replace(/\\./g, '+').replace(/_/g, '/').replace(/-/g, '=')\n\n    const compressedString = atob(enc);\n    const compressedBytes = [];\n    for (let i = 0; i < compressedString.length; i++) {\n        compressedBytes.push(compressedString.charCodeAt(i));\n    }\n    //const bytes = new Zlib.RawInflate(compressedBytes).decompress();\n    const bytes = inflateRaw(compressedBytes);\n\n    let str = ''\n    for (let b of bytes) {\n        str += String.fromCharCode(b)\n    }\n    return str;\n}\n\n\n/**\n * @param dataURI\n * @returns {Array<number>|Uint8Array}\n */\nfunction decodeDataURI(dataURI, gzip) {\n\n    const split = dataURI.split(',');\n    const info = split[0].split(':')[1];\n    let dataString = split[1];\n\n    if (info.indexOf('base64') >= 0) {\n        dataString = atob(dataString);\n\n        const bytes = new Uint8Array(dataString.length);\n        for (let i = 0; i < dataString.length; i++) {\n            bytes[i] = dataString.charCodeAt(i);\n        }\n\n        let plain\n        if (gzip || info.indexOf('gzip') > 0) {\n            plain = ungzip(bytes)\n        } else {\n            plain = bytes\n        }\n        return plain\n    } else {\n        return decodeURIComponent(dataString);      // URL encoded string -- not currently used or tested\n    }\n}\n\nexport {\n    unbgzf,\n    bgzBlockSize,\n    gzip,\n    ungzip_blocks as ungzip,\n    isgzipped,\n    compressString,\n    uncompressString,\n    decodeDataURI,\n    inflate,\n    inflateRaw\n}","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\nconst IGVMath = {\n\n    lerp: (v0, v1, t) => {\n        return (1 - t) * v0 + t * v1;\n    },\n\n    mean: function (array) {\n\n        var t = 0, n = 0,\n            i;\n        for (i = 0; i < array.length; i++) {\n            if (!isNaN(array[i])) {\n                t += array[i];\n                n++;\n            }\n        }\n        return n > 0 ? t / n : 0;\n    },\n\n    meanAndStdev: function (array) {\n\n        var v, t = 0, t2 = 0, n = 0, i;\n\n        for (i = 0; i < array.length; i++) {\n\n            v = array[i];\n\n            if (!isNaN(v)) {\n                t += v;\n                t2 += v * v;\n                n++;\n            }\n        }\n        return n > 0 ? {mean: t / n, stdev: Math.sqrt(t2 - t * t / n)} : {mean: 0, stdev: 0};\n    },\n\n    median: function (numbers) {\n        // median of [3, 5, 4, 4, 1, 1, 2, 3] = 3\n        var median = 0, numsLen = numbers.length;\n        numbers.sort();\n\n        if (\n            numsLen % 2 === 0 // is even\n        ) {\n            // average of two middle numbers\n            median = (numbers[numsLen / 2 - 1] + numbers[numsLen / 2]) / 2;\n        } else { // is odd\n            // middle number only\n            median = numbers[(numsLen - 1) / 2];\n        }\n\n        return median;\n    },\n\n    // Fast percentile function for \"p\" near edges.  This needs profiled for p in middle (e.g. median)\n    percentile: function (array, p) {\n\n        if (array.length === 0) return undefined;\n\n        var k = Math.floor(array.length * ((100 - p) / 100));\n        if (k === 0) {\n            array.sort(function (a, b) {\n                return b - a\n            });\n            return array[k];\n        } else {\n            return selectElement(array, k);\n        }\n\n    },\n\n\n    clamp: function (value, min, max) {\n        return Math.min(Math.max(value, min), max);\n    },\n\n    log2: function (x) {\n        return Math.log(x) / Math.LN2;\n    }\n\n};\n\nfunction selectElement(array, k) {\n\n    // Credit Steve Hanov http://stevehanov.ca/blog/index.php?id=122\n    var heap = new BinaryHeap(),\n        i;\n\n    for (i = 0; i < array.length; i++) {\n\n        var item = array[i];\n\n        // If we have not yet found k items, or the current item is larger than\n        // the smallest item on the heap, add current item\n        if (heap.content.length < k || item > heap.content[0]) {\n            // If the heap is full, remove the smallest element on the heap.\n            if (heap.content.length === k) {\n                var r = heap.pop();\n            }\n            heap.push(item)\n        }\n    }\n\n    return heap.content[0];\n}\n\n\nfunction BinaryHeap() {\n    this.content = [];\n}\n\nBinaryHeap.prototype = {\n    push: function (element) {\n        // Add the new element to the end of the array.\n        this.content.push(element);\n        // Allow it to bubble up.\n        this.bubbleUp(this.content.length - 1);\n    },\n\n    pop: function () {\n        // Store the first element so we can return it later.\n        var result = this.content[0];\n        // Get the element at the end of the array.\n        var end = this.content.pop();\n        // If there are any elements left, put the end element at the\n        // start, and let it sink down.\n        if (this.content.length > 0) {\n            this.content[0] = end;\n            this.sinkDown(0);\n        }\n        return result;\n    },\n\n    remove: function (node) {\n        var length = this.content.length;\n        // To remove a value, we must search through the array to find\n        // it.\n        for (var i = 0; i < length; i++) {\n            if (this.content[i] !== node) continue;\n            // When it is found, the process seen in 'pop' is repeated\n            // to fill up the hole.\n            var end = this.content.pop();\n            // If the element we popped was the one we needed to remove,\n            // we're done.\n            if (i === length - 1) break;\n            // Otherwise, we replace the removed element with the popped\n            // one, and allow it to float up or sink down as appropriate.\n            this.content[i] = end;\n            this.bubbleUp(i);\n            this.sinkDown(i);\n            break;\n        }\n    },\n\n    size: function () {\n        return this.content.length;\n    },\n\n    bubbleUp: function (n) {\n        // Fetch the element that has to be moved.\n        var element = this.content[n], score = element;\n        // When at 0, an element can not go up any further.\n        while (n > 0) {\n            // Compute the parent element's index, and fetch it.\n            var parentN = Math.floor((n + 1) / 2) - 1,\n                parent = this.content[parentN];\n            // If the parent has a lesser score, things are in order and we\n            // are done.\n            if (score >= parent)\n                break;\n\n            // Otherwise, swap the parent with the current element and\n            // continue.\n            this.content[parentN] = element;\n            this.content[n] = parent;\n            n = parentN;\n        }\n    },\n\n    sinkDown: function (n) {\n        // Look up the target element and its score.\n        var length = this.content.length,\n            element = this.content[n],\n            elemScore = element;\n\n        while (true) {\n            // Compute the indices of the child elements.\n            var child2N = (n + 1) * 2, child1N = child2N - 1;\n            // This is used to store the new position of the element,\n            // if any.\n            var swap = null;\n            // If the first child exists (is inside the array)...\n            if (child1N < length) {\n                // Look it up and compute its score.\n                var child1 = this.content[child1N],\n                    child1Score = child1;\n                // If the score is less than our element's, we need to swap.\n                if (child1Score < elemScore)\n                    swap = child1N;\n            }\n            // Do the same checks for the other child.\n            if (child2N < length) {\n                var child2 = this.content[child2N],\n                    child2Score = child2;\n                if (child2Score < (swap == null ? elemScore : child1Score))\n                    swap = child2N;\n            }\n\n            // No need to swap further, we are done.\n            if (swap == null) break;\n\n            // Otherwise, swap and continue.\n            this.content[n] = this.content[swap];\n            this.content[swap] = element;\n            n = swap;\n        }\n    }\n};\n\nexport default IGVMath;\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport IGVMath from \"./igv-math.js\";\nimport {stripQuotes} from \"./stringUtils.js\";\n\nfunction _random(min, max) {\n    return Math.random() * (max - min) + min;\n}\n\nconst IGVColor = {\n\n    rgbListFromHSV: () => {\n\n        let s = 1;\n        let accumulation = [];\n        for (let v = 1; v >= 0.5; v -= .1) {\n            for (let h = 0; h < 1; h += 1 / 28) {\n                const r = \"rgb(\" + IGVColor.hsvToRgb(h, s, v).join(\",\") + \")\";\n                accumulation.push(r);\n            }\n        }\n\n        // add black\n        accumulation.pop();\n        accumulation.push(IGVColor.rgbColor(16, 16, 16));\n\n        return accumulation;\n    },\n\n    rgbToHex: function (rgb) {\n        rgb = rgb.match(/^rgba?[\\s+]?\\([\\s+]?(\\d+)[\\s+]?,[\\s+]?(\\d+)[\\s+]?,[\\s+]?(\\d+)[\\s+]?/i);\n        return (rgb && rgb.length === 4) ? \"#\" +\n            (\"0\" + parseInt(rgb[1], 10).toString(16)).slice(-2) +\n            (\"0\" + parseInt(rgb[2], 10).toString(16)).slice(-2) +\n            (\"0\" + parseInt(rgb[3], 10).toString(16)).slice(-2) : '';\n    },\n\n    hexToRgb: function (hex) {\n\n        var cooked = /^#?([a-f\\d]{2})([a-f\\d]{2})([a-f\\d]{2})$/i.exec(hex);\n\n        if (null === cooked) {\n            return undefined;\n        }\n\n        return \"rgb(\" + parseInt(cooked[1], 16) + \",\" + parseInt(cooked[2], 16) + \",\" + parseInt(cooked[3], 16) + \")\";\n    },\n\n    /**\n     * Converts an HSV color value to RGB. Conversion formula\n     * adapted from http://en.wikipedia.org/wiki/HSV_color_space.\n     * Assumes h, s, and v are contained in the set [0, 1] and\n     * returns r, g, and b in the set [0, 255].\n     *\n     * Credit: https://gist.githubusercontent.com/mjackson/5311256\n     *\n     * @param   h       The hue\n     * @param   s       The saturation\n     * @param   v       The value\n     * @return  Array   The RGB representation\n     */\n    hsvToRgb: function (h, s, v) {\n        var r, g, b;\n\n        var i = Math.floor(h * 6);\n        var f = h * 6 - i;\n        var p = v * (1 - s);\n        var q = v * (1 - f * s);\n        var t = v * (1 - (1 - f) * s);\n\n        switch (i % 6) {\n            case 0:\n                r = v, g = t, b = p;\n                break;\n            case 1:\n                r = q, g = v, b = p;\n                break;\n            case 2:\n                r = p, g = v, b = t;\n                break;\n            case 3:\n                r = p, g = q, b = v;\n                break;\n            case 4:\n                r = t, g = p, b = v;\n                break;\n            case 5:\n                r = v, g = p, b = q;\n                break;\n        }\n\n        return [Math.floor(r * 255), Math.floor(g * 255), Math.floor(b * 255)];\n    },\n\n    /**\n     * Converts an HSL color value to RGB. Conversion formula\n     * adapted from http://en.wikipedia.org/wiki/HSL_color_space.\n     * Assumes h, s, and l are contained in the set [0, 1] and\n     * returns r, g, and b in the set [0, 255].\n     *\n     * Credit: https://gist.githubusercontent.com/mjackson/5311256\n     *\n     * @param   h       The hue\n     * @param   s       The saturation\n     * @param   l       The lightness\n     * @return  Array   The RGB representation\n     */\n    hslToRgb: function (h, s, l) {\n        var r, g, b;\n\n        if (s === 0) {\n            r = g = b = l; // achromatic\n        } else {\n\n\n            var q = l < 0.5 ? l * (1 + s) : l + s - l * s;\n            var p = 2 * l - q;\n\n            r = IGVColor.hue2rgb(p, q, h + 1 / 3);\n            g = IGVColor.hue2rgb(p, q, h);\n            b = IGVColor.hue2rgb(p, q, h - 1 / 3);\n        }\n\n        return [r * 255, g * 255, b * 255];\n    },\n\n    hue2rgb: (p, q, t) => {\n        if (t < 0) t += 1;\n        if (t > 1) t -= 1;\n        if (t < 1 / 6) return p + (q - p) * 6 * t;\n        if (t < 1 / 2) return q;\n        if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;\n        return p;\n    },\n\n    rgbaColor: function (r, g, b, a) {\n\n        r = IGVMath.clamp(r, 0, 255);\n        g = IGVMath.clamp(g, 0, 255);\n        b = IGVMath.clamp(b, 0, 255);\n        a = IGVMath.clamp(a, 0.0, 1.0);\n\n        return \"rgba(\" + r + \",\" + g + \",\" + b + \",\" + a + \")\";\n    },\n\n    rgbColor: function (r, g, b) {\n\n        r = IGVMath.clamp(r, 0, 255);\n        g = IGVMath.clamp(g, 0, 255);\n        b = IGVMath.clamp(b, 0, 255);\n\n        return \"rgb(\" + r + \",\" + g + \",\" + b + \")\";\n    },\n\n    greyScale: function (value) {\n\n        var grey = IGVMath.clamp(value, 0, 255);\n\n        return \"rgb(\" + grey + \",\" + grey + \",\" + grey + \")\";\n    },\n\n    randomGrey: function (min, max) {\n\n        min = IGVMath.clamp(min, 0, 255);\n        max = IGVMath.clamp(max, 0, 255);\n\n        var g = Math.round(_random(min, max)).toString(10);\n\n        return \"rgb(\" + g + \",\" + g + \",\" + g + \")\";\n    },\n\n    randomRGB: function (min, max) {\n\n        min = IGVMath.clamp(min, 0, 255);\n        max = IGVMath.clamp(max, 0, 255);\n\n        var r = Math.round(_random(min, max)).toString(10);\n        var g = Math.round(_random(min, max)).toString(10);\n        var b = Math.round(_random(min, max)).toString(10);\n\n        return \"rgb(\" + r + \",\" + g + \",\" + b + \")\";\n    },\n\n    randomRGBConstantAlpha: function (min, max, alpha) {\n\n        min = IGVMath.clamp(min, 0, 255);\n        max = IGVMath.clamp(max, 0, 255);\n\n        var r = Math.round(_random(min, max)).toString(10);\n        var g = Math.round(_random(min, max)).toString(10);\n        var b = Math.round(_random(min, max)).toString(10);\n\n        return \"rgba(\" + r + \",\" + g + \",\" + b + \",\" + alpha + \")\";\n    },\n\n    addAlpha: function (color, alpha) {\n\n        if(color === \"0\" || color === \".\") {\n            color = \"rgb(0,0,0)\"\n        } else {\n            const c = this.colorNameToHex(color);\n            if (c) {\n                color = c;\n            }\n        }\n\n        var isHex = /(^#[0-9A-F]{6}$)|(^#[0-9A-F]{3}$)/i.test(color);\n\n        if (color.startsWith(\"rgba\")) {\n            const idx = color.lastIndexOf(\",\");\n            return color.substring(0, idx+1) + alpha.toString() + \")\";\n        }\n\n        if (isHex) {\n            color = IGVColor.hexToRgb(color);\n        }\n\n        if (color.startsWith(\"rgb\")) {\n            return color.replace(\"rgb\", \"rgba\").replace(\")\", \", \" + alpha + \")\");\n        } else {\n            console.log(color + \" is not an rgb style string\");\n            return color;\n        }\n    },\n\n    rgbComponents: function (color) {\n\n        if(color === \"0\" || color === \".\") {\n            return [0,0,0];\n        }\n        const isHex = /(^#[0-9A-F]{6}$)|(^#[0-9A-F]{3}$)/i.test(color);\n        if (isHex) {\n            color = IGVColor.hexToRgb(color);\n        } else {\n            if(!color.startsWith(\"rgb\")) {\n                const hex = this.colorNameToHex(color);\n                color = this.hexToRgb(hex);\n            }\n        }\n\n        if (color.startsWith(\"rgb(\")) {\n            return color.substring(4, color.length-1).split(\",\").map(s => Number.parseInt(s.trim()));\n         } else if (color.startsWith(\"rgba(\")) {\n            return color.substring(5, color.length-1).split(\",\").map((s, i) => {\n                s = s.trim();\n                return i === 3 ? Number.parseFloat(s) : Number.parseInt(s)\n            });\n        }\n        else {\n            throw Error(\"Unrecognized color string: color\");\n        }\n    },\n\n    /**\n     *\n     * @param dest  RGB components as an array\n     * @param src  RGB components as an array\n     * @param alpha   alpha transparancy in the range 0-1\n     * @returns {}\n     */\n    getCompositeColor: function (dest, src, alpha) {\n\n        var r = Math.floor(alpha * src[0] + (1 - alpha) * dest[0]),\n            g = Math.floor(alpha * src[1] + (1 - alpha) * dest[1]),\n            b = Math.floor(alpha * src[2] + (1 - alpha) * dest[2]);\n\n        return \"rgb(\" + r + \",\" + g + \",\" + b + \")\";\n\n    },\n\n\n    createColorString: function (str) {\n        // Excel will quote color strings, strip all quotes\n        str = stripQuotes(str);\n\n        if (str.includes(\",\")) {\n            return str.startsWith(\"rgb\") ? str : \"rgb(\" + str + \")\";\n        } else {\n            return str;\n        }\n    },\n\n    darkenLighten: function (color, amt) {\n\n        let src;\n        let hexColor = this.colorNameToHex(color);\n        if(hexColor) {\n            src  = IGVColor.hexToRgb(hexColor);\n        } else {\n            src = color.startsWith('rgb(') ? color : IGVColor.hexToRgb(color);\n        }\n\n        const components = src.replace(\")\", \"\").substring(4).split(\",\");\n\n        const r = Math.max(0, Math.min(255, Number.parseInt(components[0].trim()) + amt));\n        const g = Math.max(0, Math.min(255, Number.parseInt(components[1].trim()) + amt));\n        const b = Math.max(0, Math.min(255, Number.parseInt(components[2].trim()) + amt));\n\n        return 'rgb(' + r.toString() + ',' + g.toString() + ',' + b.toString() + ')';\n\n    },\n\n    /**\n     * Convert html/css color name to hex value.  Adapted from https://gist.github.com/mxfh/4719348\n     * @param colorName\n     * @returns {*}\n     */\n    colorNameToHex: function (colorName) { // color list from http://stackoverflow.com/q/1573053/731179  with added gray/gray\n        const definedColorNames = {\n            \"aliceblue\": \"#f0f8ff\",\n            \"antiquewhite\": \"#faebd7\",\n            \"aqua\": \"#00ffff\",\n            \"aquamarine\": \"#7fffd4\",\n            \"azure\": \"#f0ffff\",\n            \"beige\": \"#f5f5dc\",\n            \"bisque\": \"#ffe4c4\",\n            \"black\": \"#000000\",\n            \"blanchedalmond\": \"#ffebcd\",\n            \"blue\": \"#0000ff\",\n            \"blueviolet\": \"#8a2be2\",\n            \"brown\": \"#a52a2a\",\n            \"burlywood\": \"#deb887\",\n            \"cadetblue\": \"#5f9ea0\",\n            \"chartreuse\": \"#7fff00\",\n            \"chocolate\": \"#d2691e\",\n            \"coral\": \"#ff7f50\",\n            \"cornflowerblue\": \"#6495ed\",\n            \"cornsilk\": \"#fff8dc\",\n            \"crimson\": \"#dc143c\",\n            \"cyan\": \"#00ffff\",\n            \"darkblue\": \"#00008b\",\n            \"darkcyan\": \"#008b8b\",\n            \"darkgoldenrod\": \"#b8860b\",\n            \"darkgray\": \"#a9a9a9\",\n            \"darkgreen\": \"#006400\",\n            \"darkkhaki\": \"#bdb76b\",\n            \"darkmagenta\": \"#8b008b\",\n            \"darkolivegreen\": \"#556b2f\",\n            \"darkorange\": \"#ff8c00\",\n            \"darkorchid\": \"#9932cc\",\n            \"darkred\": \"#8b0000\",\n            \"darksalmon\": \"#e9967a\",\n            \"darkseagreen\": \"#8fbc8f\",\n            \"darkslateblue\": \"#483d8b\",\n            \"darkslategray\": \"#2f4f4f\",\n            \"darkturquoise\": \"#00ced1\",\n            \"darkviolet\": \"#9400d3\",\n            \"deeppink\": \"#ff1493\",\n            \"deepskyblue\": \"#00bfff\",\n            \"dimgray\": \"#696969\",\n            \"dodgerblue\": \"#1e90ff\",\n            \"firebrick\": \"#b22222\",\n            \"floralwhite\": \"#fffaf0\",\n            \"forestgreen\": \"#228b22\",\n            \"fuchsia\": \"#ff00ff\",\n            \"gainsboro\": \"#dcdcdc\",\n            \"ghostwhite\": \"#f8f8ff\",\n            \"gold\": \"#ffd700\",\n            \"goldenrod\": \"#daa520\",\n            \"gray\": \"#808080\",\n            \"green\": \"#008000\",\n            \"greenyellow\": \"#adff2f\",\n            \"honeydew\": \"#f0fff0\",\n            \"hotpink\": \"#ff69b4\",\n            \"indianred \": \"#cd5c5c\",\n            \"indigo \": \"#4b0082\",\n            \"ivory\": \"#fffff0\",\n            \"khaki\": \"#f0e68c\",\n            \"lavender\": \"#e6e6fa\",\n            \"lavenderblush\": \"#fff0f5\",\n            \"lawngreen\": \"#7cfc00\",\n            \"lemonchiffon\": \"#fffacd\",\n            \"lightblue\": \"#add8e6\",\n            \"lightcoral\": \"#f08080\",\n            \"lightcyan\": \"#e0ffff\",\n            \"lightgoldenrodyellow\": \"#fafad2\",\n            \"lightgrey\": \"#d3d3d3\",\n            \"lightgreen\": \"#90ee90\",\n            \"lightpink\": \"#ffb6c1\",\n            \"lightsalmon\": \"#ffa07a\",\n            \"lightseagreen\": \"#20b2aa\",\n            \"lightskyblue\": \"#87cefa\",\n            \"lightslategray\": \"#778899\",\n            \"lightsteelblue\": \"#b0c4de\",\n            \"lightyellow\": \"#ffffe0\",\n            \"lime\": \"#00ff00\",\n            \"limegreen\": \"#32cd32\",\n            \"linen\": \"#faf0e6\",\n            \"magenta\": \"#ff00ff\",\n            \"maroon\": \"#800000\",\n            \"mediumaquamarine\": \"#66cdaa\",\n            \"mediumblue\": \"#0000cd\",\n            \"mediumorchid\": \"#ba55d3\",\n            \"mediumpurple\": \"#9370d8\",\n            \"mediumseagreen\": \"#3cb371\",\n            \"mediumslateblue\": \"#7b68ee\",\n            \"mediumspringgreen\": \"#00fa9a\",\n            \"mediumturquoise\": \"#48d1cc\",\n            \"mediumvioletred\": \"#c71585\",\n            \"midnightblue\": \"#191970\",\n            \"mintcream\": \"#f5fffa\",\n            \"mistyrose\": \"#ffe4e1\",\n            \"moccasin\": \"#ffe4b5\",\n            \"navajowhite\": \"#ffdead\",\n            \"navy\": \"#000080\",\n            \"oldlace\": \"#fdf5e6\",\n            \"olive\": \"#808000\",\n            \"olivedrab\": \"#6b8e23\",\n            \"orange\": \"#ffa500\",\n            \"orangered\": \"#ff4500\",\n            \"orchid\": \"#da70d6\",\n            \"palegoldenrod\": \"#eee8aa\",\n            \"palegreen\": \"#98fb98\",\n            \"paleturquoise\": \"#afeeee\",\n            \"palevioletred\": \"#d87093\",\n            \"papayawhip\": \"#ffefd5\",\n            \"peachpuff\": \"#ffdab9\",\n            \"peru\": \"#cd853f\",\n            \"pink\": \"#ffc0cb\",\n            \"plum\": \"#dda0dd\",\n            \"powderblue\": \"#b0e0e6\",\n            \"purple\": \"#800080\",\n            \"red\": \"#ff0000\",\n            \"rosybrown\": \"#bc8f8f\",\n            \"royalblue\": \"#4169e1\",\n            \"saddlebrown\": \"#8b4513\",\n            \"salmon\": \"#fa8072\",\n            \"sandybrown\": \"#f4a460\",\n            \"seagreen\": \"#2e8b57\",\n            \"seashell\": \"#fff5ee\",\n            \"sienna\": \"#a0522d\",\n            \"silver\": \"#c0c0c0\",\n            \"skyblue\": \"#87ceeb\",\n            \"slateblue\": \"#6a5acd\",\n            \"slategray\": \"#708090\",\n            \"snow\": \"#fffafa\",\n            \"springgreen\": \"#00ff7f\",\n            \"steelblue\": \"#4682b4\",\n            \"tan\": \"#d2b48c\",\n            \"teal\": \"#008080\",\n            \"thistle\": \"#d8bfd8\",\n            \"tomato\": \"#ff6347\",\n            \"turquoise\": \"#40e0d0\",\n            \"violet\": \"#ee82ee\",\n            \"wheat\": \"#f5deb3\",\n            \"white\": \"#ffffff\",\n            \"whitesmoke\": \"#f5f5f5\",\n            \"yellow\": \"#ffff00\",\n            \"yellowgreen\": \"#9acd32\",\n            \"darkgrey\": \"#a9a9a9\",\n            \"darkslategrey\": \"#2f4f4f\",\n            \"dimgrey\": \"#696969\",\n            \"grey\": \"#808080\",\n            \"lightgray\": \"#d3d3d3\",\n            \"lightslategrey\": \"#778899\",\n            \"slategrey\": \"#708090\"\n        };\n        return definedColorNames[colorName];\n    }\n}\n\n\nexport default IGVColor;\n","// Support for oauth token based authorization\n// This class supports explicit setting of an oauth token either globally or for specific hosts.\n//\n// The variable oauth.google.access_token, which becomes igv.oauth.google.access_token on ES5 conversion is\n// supported for backward compatibility\n\nconst DEFAULT_HOST = \"googleapis\"\n\nclass Oauth {\n\n    constructor() {\n        this.oauthTokens = {}\n    }\n\n\n    setToken(token, host) {\n        host = host || DEFAULT_HOST\n        this.oauthTokens[host] = token\n    }\n\n    getToken(host) {\n        host = host || DEFAULT_HOST\n        let token\n        for (let key of Object.keys(this.oauthTokens)) {\n            const regex = wildcardToRegExp(key)\n            if (regex.test(host)) {\n                token = this.oauthTokens[key]\n                break\n            }\n        }\n        return token\n    }\n\n    removeToken(host) {\n        host = host || DEFAULT_HOST\n        for (let key of Object.keys(this.oauthTokens)) {\n            const regex = wildcardToRegExp(key)\n            if (regex.test(host)) {\n                this.oauthTokens[key] = undefined\n            }\n        }\n    }\n\n    // Special object for google -- legacy support\n    // google: {\n    //     setToken: function (token) {\n    //         oauth.setToken(token);\n    //     }\n    // }\n}\n\n\n/**\n * Creates a RegExp from the given string, converting asterisks to .* expressions,\n * and escaping all other characters.\n *\n * credit https://gist.github.com/donmccurdy/6d073ce2c6f3951312dfa45da14a420f\n */\nfunction wildcardToRegExp(s) {\n    return new RegExp('^' + s.split(/\\*+/).map(regExpEscape).join('.*') + '$')\n}\n\n/**\n * RegExp-escapes all characters in the given string.\n *\n * credit https://gist.github.com/donmccurdy/6d073ce2c6f3951312dfa45da14a420f\n */\nfunction regExpEscape(s) {\n    return s.replace(/[|\\\\{}()[\\]^$+*?.]/g, '\\\\$&')\n}\n\nexport default Oauth\n","function isGoogleURL(url) {\n    return (url.includes(\"googleapis\") && !url.includes(\"urlshortener\")) ||\n        isGoogleStorageURL(url) ||\n        isGoogleDriveURL(url)\n}\n\nfunction isGoogleStorageURL(url) {\n    return url.startsWith(\"gs://\") ||\n        url.startsWith(\"https://www.googleapis.com/storage\") ||\n        url.startsWith(\"https://storage.cloud.google.com\") ||\n        url.startsWith(\"https://storage.googleapis.com\");\n}\n\nfunction isGoogleDriveURL(url) {\n    return url.indexOf(\"drive.google.com\") >= 0 || url.indexOf(\"www.googleapis.com/drive\") > 0\n}\n\n/**\n * Translate gs:// urls to https\n * See https://cloud.google.com/storage/docs/json_api/v1\n * @param gsUrl\n * @returns {string|*}\n */\nfunction translateGoogleCloudURL(gsUrl) {\n\n    let {bucket, object} = parseBucketName(gsUrl);\n    object = encode(object);\n\n    const qIdx = gsUrl.indexOf('?');\n    const paramString = (qIdx > 0) ? gsUrl.substring(qIdx) + \"&alt=media\" : \"?alt=media\";\n\n    return `https://storage.googleapis.com/storage/v1/b/${bucket}/o/${object}${paramString}`\n}\n\n/**\n * Parse a google bucket and object name from a google storage URL.  Known forms include\n *\n * gs://BUCKET_NAME/OBJECT_NAME\n * https://storage.googleapis.com/BUCKET_NAME/OBJECT_NAME\n * https://storage.googleapis.com/storage/v1/b/BUCKET_NAME/o/OBJECT_NAME\n * https://www.googleapis.com/storage/v1/b/BUCKET_NAME/o/OBJECT_NAME\"\n * https://storage.googleapis.com/download/storage/v1/b/BUCKET_NAME/o/OBJECT_NAME\n *\n * @param url\n */\nfunction parseBucketName(url) {\n\n    let bucket;\n    let object;\n\n    if (url.startsWith(\"gs://\")) {\n        const i = url.indexOf('/', 5);\n        if (i >= 0) {\n            bucket = url.substring(5, i);\n            const qIdx = url.indexOf('?');\n            object = (qIdx < 0) ? url.substring(i + 1) : url.substring(i + 1, qIdx);\n        }\n\n    } else if (url.startsWith(\"https://storage.googleapis.com\") || url.startsWith(\"https://storage.cloud.google.com\")) {\n        const bucketIdx = url.indexOf(\"/v1/b/\", 8)\n        if (bucketIdx > 0) {\n            const objIdx = url.indexOf(\"/o/\", bucketIdx);\n            if (objIdx > 0) {\n                const queryIdx = url.indexOf(\"?\", objIdx);\n                bucket = url.substring(bucketIdx + 6, objIdx);\n                object = queryIdx > 0 ? url.substring(objIdx + 3, queryIdx) : url.substring(objIdx + 3);\n            }\n\n        } else {\n            const idx1 = url.indexOf(\"/\", 8);\n            const idx2 = url.indexOf(\"/\", idx1+1);\n            const idx3 = url.indexOf(\"?\", idx2);\n            if (idx2 > 0) {\n                bucket = url.substring(idx1+1, idx2);\n                object = idx3 < 0 ? url.substring(idx2+1) : url.substring(idx2+1, idx3);\n            }\n        }\n\n    } else if (url.startsWith(\"https://www.googleapis.com/storage/v1/b\")) {\n        const bucketIdx = url.indexOf(\"/v1/b/\", 8);\n        const objIdx = url.indexOf(\"/o/\", bucketIdx);\n        if (objIdx > 0) {\n            const queryIdx = url.indexOf(\"?\", objIdx);\n            bucket = url.substring(bucketIdx + 6, objIdx);\n            object = queryIdx > 0 ? url.substring(objIdx + 3, queryIdx) : url.substring(objIdx + 3);\n        }\n    }\n\n    if (bucket && object) {\n        return {\n            bucket, object\n        }\n    } else {\n        throw Error(`Unrecognized Google Storage URI: ${url}`)\n    }\n\n}\n\n/**\n * Percent a GCS object name.  See https://cloud.google.com/storage/docs/request-endpoints\n * Specific characters to encode:\n *   !, #, $, &, ', (, ), *, +, ,, /, :, ;, =, ?, @, [, ], and space characters.\n * @param obj\n */\n\nfunction encode(objectName) {\n\n    let result = '';\n    objectName.split('').forEach(function(letter) {\n        if(encodings.has(letter)) {\n            result += encodings.get(letter);\n        } else {\n            result += letter;\n        }\n    })\n    return result;\n}\n\n//\t%23\t%24\t%25\t%26\t%27\t%28\t%29\t%2A\t%2B\t%2C\t%2F\t%3A\t%3B\t%3D\t%3F\t%40\t%5B\t%5D\nconst encodings = new Map();\nencodings.set(\"!\", \"%21\");\nencodings.set(\"#\", \"%23\");\nencodings.set(\"$\", \"%24\");\nencodings.set(\"%\", \"%25\");\nencodings.set(\"&\", \"%26\");\nencodings.set(\"'\", \"%27\");\nencodings.set(\"(\", \"%28\");\nencodings.set(\")\", \"%29\");\nencodings.set(\"*\", \"%2A\");\nencodings.set(\"+\", \"%2B\");\nencodings.set(\",\", \"%2C\");\nencodings.set(\"/\", \"%2F\");\nencodings.set(\":\", \"%3A\");\nencodings.set(\";\", \"%3B\");\nencodings.set(\"=\", \"%3D\");\nencodings.set(\"?\", \"%3F\");\nencodings.set(\"@\", \"%40\");\nencodings.set(\"[\", \"%5B\");\nencodings.set(\"]\", \"%5D\");\nencodings.set(\" \", \"%20\");\n\n// For testing\n//for(let [key, value] of encodings) {\n//    const v2 = encodeURIComponent(key);\n//    console.log(value + \"  \" + v2);\n//}\n\nexport {\n    isGoogleURL, isGoogleDriveURL, isGoogleStorageURL, translateGoogleCloudURL, parseBucketName\n}\n\n\n\n","// Convenience functions for the gapi oAuth library.\n// This wrapper is stateless -- this is important as multiple copies of this module might be present\n// in an application.  All state is attached to the global google  object.\n\nimport {isGoogleDriveURL, isGoogleStorageURL} from \"./googleUtils.js\"\n\nasync function init(config) {\n\n    if (!(google.accounts.oauth2.initTokenClient)) {\n        throw new Error(\"Google accounts token client not loaded (https://accounts.google.com/gsi/client)\")\n    }\n\n    if (isInitialized()) {\n        throw new Error(\"Google client is already initialized\")\n    }\n\n    // Note: callback is added when accessToken is requested\n    const codeClientConfig = {\n        client_id: config.client_id,\n        scope: config.scope || 'https://www.googleapis.com/auth/userinfo.profile',\n        state: config.state || 'igv',\n        error: (err) => {\n            throw new Error(err.type)\n        },\n        hint: config.hint,     // Optional\n        hosted_domain: config.hosted_domain  // Optional\n    }\n\n    const tokenClient = google.accounts.oauth2.initTokenClient(codeClientConfig)\n\n    // Attach an object to keep igv state\n    google.igv = {\n        tokenClient: tokenClient,\n        apiKey: config.apiKey\n    }\n}\n\nfunction isInitialized() {\n    return window.google && window.google.igv\n}\n\n/**\n * Return the current access token if the user is signed in, or undefined otherwise.  This function does not\n * attempt a signIn or request any specfic scopes.\n *\n * @returns access_token || undefined\n */\nfunction getCurrentAccessToken() {\n    return (isInitialized() && google.igv.tokenResponse && Date.now() < google.igv.tokenExpiresAt) ?\n        google.igv.tokenResponse.access_token :\n        undefined\n}\n\n/**\n * Return the of the currently logged in user, if any, as represented by the current access token.  This does not force a login.*\n * @returns {Promise<any>}\n */\nasync function getCurrentUserProfile() {\n    const access_token = getCurrentAccessToken()\n    if (access_token) {\n        const endPoint = \"https://www.googleapis.com/oauth2/v1/userinfo?alt=json\"\n        const response = await fetch(endPoint, {\n            headers: {\n                'Authorization': `Bearer ${access_token}`\n            }\n        })\n        return response.json()\n    } else {\n        return undefined\n    }\n}\n\n\n/**\n * Return a promise for an access token for the given scope.  If the user hasn't authorized the scope request it\n *\n * @param scope\n * @returns {Promise<unknown>}\n */\nasync function getAccessToken(scope) {\n\n    if (!isInitialized()) {\n        throw Error(\"Google oAuth has not been initialized\")\n    }\n\n    if (google.igv.tokenResponse &&\n        Date.now() < google.igv.tokenExpiresAt &&\n        google.accounts.oauth2.hasGrantedAllScopes(google.igv.tokenResponse, scope)) {\n        return google.igv.tokenResponse.access_token\n    } else {\n        const tokenClient = google.igv.tokenClient\n        return new Promise((resolve, reject) => {\n            try {\n                // Settle this promise in the response callback for requestAccessToken()\n                tokenClient.callback = (tokenResponse) => {\n                    if (tokenResponse.error !== undefined) {\n                        reject(tokenResponse)\n                    }\n                    google.igv.tokenResponse = tokenResponse\n                    google.igv.tokenExpiresAt = Date.now() + tokenResponse.expires_in * 1000\n                    resolve(tokenResponse.access_token)\n                }\n                tokenClient.requestAccessToken({scope})\n            } catch (err) {\n                console.log(err)\n            }\n        })\n    }\n}\n\nasync function signIn(scope) {\n\n    if (!isInitialized()) {\n        throw Error(\"Google oAuth has not been initialized\")\n    }\n\n    scope = scope || 'https://www.googleapis.com/auth/userinfo.profile'\n    await getAccessToken(scope)\n\n    if (typeof google.igv.signInListener === 'function') {\n        google.igv.signInListener(undefined !== google.igv.tokenResponse)\n\n    }\n\n    return google.igv.tokenResponse\n\n}\n\nasync function signOut() {\n\n    if (!isInitialized()) {\n        throw Error(\"Google oAuth has not been initialized\")\n    }\n\n    if (google.igv && google.igv.tokenResponse) {\n        google.igv.tokenResponse = undefined\n    }\n\n    if (typeof google.igv.signInListener === 'function') {\n        google.igv.signInListener(false)\n    }\n}\n\nfunction signInListen(fn) {\n    google.igv.signInListener = fn\n}\n\n// gapi.auth2.getAuthInstance().isSignedIn.listen(status => {\n//     const user = gapi.auth2.getAuthInstance().currentUser.get()\n//     queryGoogleAuthenticationStatus(user, status)\n// })\n\nfunction getScopeForURL(url) {\n    if (isGoogleDriveURL(url)) {\n        return \"https://www.googleapis.com/auth/drive.readonly\"\n    } else if (isGoogleStorageURL(url)) {\n        return \"https://www.googleapis.com/auth/devstorage.read_only\"\n    } else {\n        return 'https://www.googleapis.com/auth/userinfo.profile'\n    }\n}\n\nfunction getApiKey() {\n    return google.igv.apiKey\n}\n\n\nexport {\n    init,\n    getAccessToken,\n    getCurrentAccessToken,\n    getScopeForURL,\n    getApiKey,\n    isInitialized,\n    signIn,\n    signOut,\n    getCurrentUserProfile,\n    signInListen\n}\n\n","import {getAccessToken, getApiKey} from \"./googleAuth.js\"\n\n\n/**\n * Return information about a specific google drive URL\n *\n * @param googleDriveURL\n * @returns {Promise<any>}\n */\nasync function getDriveFileInfo(googleDriveURL) {\n\n    const id = getGoogleDriveFileID(googleDriveURL);\n    let endPoint = \"https://www.googleapis.com/drive/v3/files/\" + id + \"?supportsTeamDrives=true\";\n    const apiKey = getApiKey();\n    if (apiKey) {\n        endPoint += \"&key=\" + apiKey;\n    }\n    const response = await fetch(endPoint);\n    let json = await response.json();\n    if (json.error && json.error.code === 404) {\n        let scope = \"https://www.googleapis.com/auth/drive.readonly\"\n        const access_token = await getAccessToken(scope);\n        if (access_token) {\n            const response = await fetch(endPoint, {\n                headers: {\n                    'Authorization': `Bearer ${access_token}`\n                }\n            })\n            json = await response.json();\n            if (json.error) {\n                throw Error(json.error);\n            }\n        } else {\n            throw Error(json.error);\n        }\n    }\n    return json;\n}\n\n/**\n * Return general Google Drive information for the currently logged in user*\n * *\n * @returns {Promise<any>}\n */\nasync function getDriveInfo() {\n    const access_token = await getAccessToken('https://www.googleapis.com/auth/drive.readonly')\n    const endPoint = \"https://www.googleapis.com/drive/v3/about?fields=*\"\n    const response = await fetch(endPoint, {\n        headers: {\n            'Authorization': `Bearer ${access_token}`\n        }\n    })\n    return response.json()\n}\n\n\nfunction getDriveDownloadURL(link) {\n    // Return a google drive download url for the sharable link\n    //https://drive.google.com/open?id=0B-lleX9c2pZFbDJ4VVRxakJzVGM\n    //https://drive.google.com/file/d/1_FC4kCeO8E3V4dJ1yIW7A0sn1yURKIX-/view?usp=sharing\n    var id = getGoogleDriveFileID(link);\n    return id ? \"https://www.googleapis.com/drive/v3/files/\" + id + \"?alt=media&supportsTeamDrives=true\" : link;\n}\n\nfunction getGoogleDriveFileID(link) {\n\n    //https://drive.google.com/file/d/1_FC4kCeO8E3V4dJ1yIW7A0sn1yURKIX-/view?usp=sharing\n    //https://www.googleapis.com/drive/v3/files/1w-tvo6p1SH4p1OaQSVxpkV_EJgGIstWF?alt=media&supportsTeamDrives=true\"\n\n    if (link.includes(\"/open?id=\")) {\n        const i1 = link.indexOf(\"/open?id=\") + 9;\n        const i2 = link.indexOf(\"&\");\n        if (i1 > 0 && i2 > i1) {\n            return link.substring(i1, i2)\n        } else if (i1 > 0) {\n            return link.substring(i1);\n        }\n\n    } else if (link.includes(\"/file/d/\")) {\n        const i1 = link.indexOf(\"/file/d/\") + 8;\n        const i2 = link.lastIndexOf(\"/\");\n        return link.substring(i1, i2);\n\n    } else if (link.startsWith(\"https://www.googleapis.com/drive\")) {\n        let i1 = link.indexOf(\"/files/\")\n        const i2 = link.indexOf(\"?\")\n        if (i1 > 0) {\n            i1 += 7;\n            return i2 > 0 ?\n                link.substring(i1, i2) :\n                link.substring(i1)\n        }\n    }\n\n    throw Error(\"Unknown Google Drive url format: \" + link);\n\n\n}\n\n\n\nexport {getDriveFileInfo, getDriveInfo, getDriveDownloadURL, getGoogleDriveFileID}","// The MIT License (MIT)\n// Adapted from https://github.com/JMPerez/promise-throttle\n//\n// Copyright (c) 2015 José M. Pérez\n//\n// Permission is hereby granted, free of charge, to any person obtaining a copy\n// of this software and associated documentation files (the \"Software\"), to deal\n// in the Software without restriction, including without limitation the rights\n// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n// copies of the Software, and to permit persons to whom the Software is\n// furnished to do so, subject to the following conditions:\n//\n//     The above copyright notice and this permission notice shall be included in all\n// copies or substantial portions of the Software.\n//\n//     THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n//     FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n//     OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE\n// SOFTWARE.\n//\n\n\n'use strict';\n\n/**\n * @constructor\n * @param {Object} options A set op options to pass to the throttle function\n *        @param {number} requestsPerSecond The amount of requests per second\n *                                          the library will limit to\n */\nclass Throttle {\n    constructor(options) {\n        this.requestsPerSecond = options.requestsPerSecond || 10;\n        this.lastStartTime = 0;\n        this.queued = [];\n    }\n\n    /**\n     * Adds a promise\n     * @param {Function} async function to be executed\n     * @param {Object} options A set of options.\n     * @return {Promise} A promise\n     */\n    add(asyncFunction, options) {\n\n        var self = this;\n        return new Promise(function (resolve, reject) {\n            self.queued.push({\n                resolve: resolve,\n                reject: reject,\n                asyncFunction: asyncFunction,\n            });\n            self.dequeue();\n        });\n    }\n\n    /**\n     * Adds all the promises passed as parameters\n     * @param {Function} promises An array of functions that return a promise\n     * @param {Object} options A set of options.\n     * @param {number} options.signal An AbortSignal object that can be used to abort the returned promise\n     * @param {number} options.weight A \"weight\" of each operation resolving by array of promises\n     * @return {Promise} A promise that succeeds when all the promises passed as options do\n     */\n    addAll(promises, options) {\n        var addedPromises = promises.map(function (promise) {\n            return this.add(promise, options);\n        }.bind(this));\n\n        return Promise.all(addedPromises);\n    };\n\n    /**\n     * Dequeues a promise\n     * @return {void}\n     */\n    dequeue() {\n        if (this.queued.length > 0) {\n            var now = new Date(),\n                inc = (1000 / this.requestsPerSecond) + 1,\n                elapsed = now - this.lastStartTime;\n\n            if (elapsed >= inc) {\n                this._execute();\n            } else {\n                // we have reached the limit, schedule a dequeue operation\n                setTimeout(function () {\n                    this.dequeue();\n                }.bind(this), inc - elapsed);\n            }\n        }\n    }\n\n    /**\n     * Executes the promise\n     * @private\n     * @return {void}\n     */\n    async _execute() {\n        this.lastStartTime = new Date();\n        var candidate = this.queued.shift();\n        const f = candidate.asyncFunction;\n        try {\n            const r = await f();\n            candidate.resolve(r);\n        } catch (e) {\n            candidate.reject(e);\n        }\n\n    }\n\n\n}\n\nexport default Throttle;\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport Oauth from \"./oauth.js\"\nimport {isFile} from './fileUtils.js'\nimport {parseUri} from './uriUtils.js'\nimport {ungzip, isgzipped, decodeDataURI} from './bgzf.js'\nimport * as GoogleUtils from './google-utils/googleUtils.js'\nimport * as GoogleAuth from './google-utils/googleAuth.js'\nimport * as GoogleDrive from './google-utils/googleDrive.js'\nimport Throttle from \"./throttle.js\"\n\nclass IGVXhr {\n\n    constructor() {\n        this.apiKey = undefined\n        this.googleThrottle = new Throttle({\n            requestsPerSecond: 8\n        })\n        this.RANGE_WARNING_GIVEN = false\n        this.oauth = new Oauth()\n    }\n\n    setApiKey(key) {\n        this.apiKey = key\n    }\n\n    async loadArrayBuffer(url, options) {\n        options = options || {}\n        if (!options.responseType) {\n            options.responseType = \"arraybuffer\"\n        }\n        if (isFile(url)) {\n            return this._loadFileSlice(url, options)\n        } else {\n            return this.load(url, options)\n        }\n    }\n\n    async loadJson(url, options) {\n        options = options || {}\n        const method = options.method || (options.sendData ? \"POST\" : \"GET\")\n        if (method === \"POST\") {\n            options.contentType = \"application/json\"\n        }\n        const result = await this.loadString(url, options)\n        if (result) {\n            return JSON.parse(result)\n        } else {\n            return result\n        }\n    }\n\n    async loadString(path, options) {\n        options = options || {}\n        if (path instanceof File) {\n            return this._loadStringFromFile(path, options)\n        } else {\n            return this._loadStringFromUrl(path, options)\n        }\n    }\n\n    async load(url, options) {\n\n        options = options || {}\n        const urlType = typeof url\n\n        // Resolve functions, promises, and functions that return promises\n        url = await (typeof url === 'function' ? url() : url)\n\n        if (isFile(url)) {\n            return this._loadFileSlice(url, options)\n        } else if (typeof url.startsWith === 'function') {   // Test for string\n            if (url.startsWith(\"data:\")) {\n                const buffer = decodeDataURI(url).buffer\n                if (options.range) {\n                    const rangeEnd = options.range.size ? options.range.start + options.range.size : buffer.byteLength\n                    return buffer.slice(options.range.start, rangeEnd)\n                } else {\n                    return buffer\n                }\n            } else {\n                if (url.startsWith(\"https://drive.google.com\")) {\n                    url = GoogleDrive.getDriveDownloadURL(url)\n                }\n                if (GoogleUtils.isGoogleDriveURL(url) || url.startsWith(\"https://www.dropbox.com\")) {\n                    return this.googleThrottle.add(async () => {\n                        return this._loadURL(url, options)\n                    })\n                } else {\n                    return this._loadURL(url, options)\n                }\n            }\n        } else {\n            throw Error(`url must be either a 'File', 'string', 'function', or 'Promise'.  Actual type: ${urlType}`)\n        }\n    }\n\n    async _loadURL(url, options) {\n\n        const self = this\n        const _url = url   // The unmodified URL, needed in case of an oAuth retry\n\n        url = mapUrl(url)\n\n        options = options || {}\n\n        let oauthToken = options.oauthToken || this.getOauthToken(url)\n        if (oauthToken) {\n            oauthToken = await (typeof oauthToken === 'function' ? oauthToken() : oauthToken)\n        }\n\n        return new Promise(function (resolve, reject) {\n\n            // Various Google tansformations\n            if (GoogleUtils.isGoogleURL(url) && !isGoogleStorageSigned(url)) {\n                if (GoogleUtils.isGoogleStorageURL(url)) {\n                    url = GoogleUtils.translateGoogleCloudURL(url)\n                }\n                url = addApiKey(url)\n\n                if (GoogleUtils.isGoogleDriveURL(url)) {\n                    addTeamDrive(url)\n                }\n\n                // If we have an access token try it, but don't force a signIn or request for scopes yet\n                if (!oauthToken) {\n                    oauthToken = getCurrentGoogleAccessToken()\n                }\n            }\n\n            const headers = options.headers || {}\n            if (oauthToken) {\n                addOauthHeaders(headers, oauthToken)\n            }\n            const range = options.range\n\n\n            const xhr = new XMLHttpRequest()\n            const sendData = options.sendData || options.body\n            const method = options.method || (sendData ? \"POST\" : \"GET\")\n            const responseType = options.responseType\n            const contentType = options.contentType\n            const mimeType = options.mimeType\n\n            xhr.open(method, url)\n\n            if (options.timeout) {\n                xhr.timeout = options.timeout\n            }\n\n            if (range) {\n                let rangeEnd = \"\"\n                if (range.size) {\n                    rangeEnd = range.start + range.size - 1\n                }\n                xhr.setRequestHeader(\"Range\", \"bytes=\" + range.start + \"-\" + rangeEnd)\n                //      xhr.setRequestHeader(\"Cache-Control\", \"no-cache\");    <= This can cause CORS issues, disabled for now\n            }\n            if (contentType) {\n                xhr.setRequestHeader(\"Content-Type\", contentType)\n            }\n            if (mimeType) {\n                xhr.overrideMimeType(mimeType)\n            }\n            if (responseType) {\n                xhr.responseType = responseType\n            }\n            if (headers) {\n                for (let key of Object.keys(headers)) {\n                    const value = headers[key]\n                    xhr.setRequestHeader(key, value)\n                }\n            }\n\n            // NOTE: using withCredentials with servers that return \"*\" for access-allowed-origin will fail\n            if (options.withCredentials === true) {\n                xhr.withCredentials = true\n            }\n\n            xhr.onload = async function (event) {\n\n                // when the url points to a local file, the status is 0\n                if (xhr.status === 0 || (xhr.status >= 200 && xhr.status <= 300)) {\n                    if (\"HEAD\" === options.method) {\n                        // Support fetching specific headers.  Attempting to fetch all headers can be problematic with CORS\n                        const headers = options.requestedHeaders || ['content-length']\n                        const headerMap = {}\n                        for (let h of headers) {\n                            headerMap[h] = xhr.getResponseHeader(h)\n                        }\n                        resolve(headerMap)\n                    } else {\n                        // Assume \"GET\" or \"POST\"\n                        if (range && xhr.status !== 206 && range.start !== 0) {\n\n                            // For small files a range starting at 0 can return the whole file => 200\n                            // Provide just the slice we asked for, throw out the rest quietly\n                            // If file is large warn user\n                            if (xhr.response.length > 100000 && !self.RANGE_WARNING_GIVEN) {\n                                alert(`Warning: Range header ignored for URL: ${url}.  This can have severe performance impacts.`)\n                            }\n                            resolve(xhr.response.slice(range.start, range.start + range.size))\n                        } else {\n                            resolve(xhr.response)\n                        }\n                    }\n                } else if (xhr.status === 416) {\n                    handleError(Error(`416 Unsatisfiable Range`))\n                } else if ((typeof gapi !== \"undefined\") &&\n                    ((xhr.status === 404 || xhr.status === 401 || xhr.status === 403) &&\n                        GoogleUtils.isGoogleURL(url)) &&\n                    !options.retries) {\n                    tryGoogleAuth()\n\n                } else {\n                    if (xhr.status === 403) {\n                        handleError(\"Access forbidden: \" + url)\n                    } else {\n                        handleError(xhr.status)\n                    }\n                }\n            }\n\n\n            xhr.onerror = function (event) {\n                if (GoogleUtils.isGoogleURL(url) && !options.retries) {\n                    tryGoogleAuth()\n                } else {\n                    handleError(\"Error accessing resource: \" + url + \" Status: \" + xhr.status)\n                }\n            }\n\n            xhr.ontimeout = function (event) {\n                handleError(\"Timed out\")\n            }\n\n            xhr.onabort = function (event) {\n                console.log(\"Aborted\")\n                reject(event)\n            }\n\n            try {\n                xhr.send(sendData)\n            } catch (e) {\n                if (GoogleUtils.isGoogleURL(url) && !options.retries) {\n                    tryGoogleAuth()\n                } else {\n                    handleError(e)\n                }\n            }\n\n\n            function handleError(error) {\n                if (reject) {\n                    reject(error)\n                } else {\n                    throw error\n                }\n            }\n\n            async function tryGoogleAuth() {\n                try {\n                    const accessToken = await fetchGoogleAccessToken(_url)\n                    options.retries = 1\n                    options.oauthToken = accessToken\n                    const response = await self.load(_url, options)\n                    resolve(response)\n                } catch (e) {\n                    if (e.error) {\n                        const msg = e.error.startsWith(\"popup_blocked\") ?\n                            \"Google login popup blocked by browser.\" :\n                            e.error\n                        alert(msg)\n                    } else {\n                        handleError(e)\n                    }\n                }\n            }\n        })\n\n    }\n\n    async _loadFileSlice(localfile, options) {\n\n        let blob = (options && options.range) ?\n            localfile.slice(options.range.start, options.range.start + options.range.size) :\n            localfile\n\n        const arrayBuffer = await blob.arrayBuffer()\n\n        if (\"arraybuffer\" === options.responseType) {\n            return arrayBuffer\n        } else {\n            return arrayBufferToString(arrayBuffer)\n        }\n    }\n\n    async _loadStringFromFile(localfile, options) {\n\n        const blob = options.range ? localfile.slice(options.range.start, options.range.start + options.range.size) : localfile\n        const arrayBuffer = await blob.arrayBuffer()\n        return arrayBufferToString(arrayBuffer)\n    }\n\n    async _loadStringFromUrl(url, options) {\n\n        options = options || {}\n        options.responseType = \"arraybuffer\"\n        const data = await this.load(url, options)\n        return arrayBufferToString(data)\n    }\n\n    /**\n     * Explicity set an oAuth token for use with given host.  If host is undefined token is used for google api access*\n     * @param token\n     * @param host\n     */\n    setOauthToken(token, host) {\n        this.oauth.setToken(token, host)\n    }\n\n    /**\n     * Return an oauth token for the URL if we have one.  This method does not force sign-in, and the token may\n     * or may not be valid.  Sign-in is triggered on request failure.\n     * *\n     * @param url\n     * @returns {*}\n     */\n    getOauthToken(url) {\n\n        // Google is the default provider, don't try to parse host for google URLs\n        const host = GoogleUtils.isGoogleURL(url) ?\n            undefined :\n            parseUri(url).host\n\n        // First check the explicit settings (i.e. token set through the API)\n        let token = this.oauth.getToken(host)\n        if (token) {\n            return token\n        } else if (host === undefined) {\n            // Now try Google oauth tokens previously obtained.  This will return undefined if google oauth is not\n            // configured.\n            const googleToken = getCurrentGoogleAccessToken()\n            if (googleToken && googleToken.expires_at > Date.now()) {\n                return googleToken.access_token\n            }\n        }\n    }\n\n    /**\n     * This method should only be called when it is known the server supports HEAD requests.  It is used to recover\n     * from 416 errors from out-of-spec WRT range request servers.  Notably Globus.\n     * * *\n     * @param url\n     * @param options\n     * @returns {Promise<unknown>}\n     */\n    async getContentLength(url, options) {\n        options = options || {}\n        options.method = 'HEAD'\n        options.requestedHeaders = ['content-length']\n        const headerMap = await this._loadURL(url, options)\n        const contentLengthString = headerMap['content-length']\n        return contentLengthString ? Number.parseInt(contentLengthString) : 0\n    }\n\n}\n\nfunction isGoogleStorageSigned(url) {\n    return url.indexOf(\"X-Goog-Signature\") > -1\n}\n\n\n/**\n * Return a Google oAuth token, triggering a sign in if required.   This method should not be called until we know\n * a token is required, that is until we've tried the url and received a 401, 403, or 404.\n *\n * @param url\n * @returns the oauth token\n */\nasync function fetchGoogleAccessToken(url) {\n    if (GoogleAuth.isInitialized()) {\n        const scope = GoogleAuth.getScopeForURL(url)\n        const access_token = await GoogleAuth.getAccessToken(scope)\n        return access_token\n    } else {\n        throw Error(\n            `Authorization is required, but Google oAuth has not been initalized. Contact your site administrator for assistance.`)\n    }\n}\n\n/**\n * Return the current google access token, if one exists.  Do not triger signOn or request additional scopes.\n * @returns {undefined|access_token}\n */\nfunction getCurrentGoogleAccessToken() {\n    if (GoogleAuth.isInitialized()) {\n        const access_token = GoogleAuth.getCurrentAccessToken()\n        return access_token\n    } else {\n        return undefined\n    }\n}\n\nfunction addOauthHeaders(headers, acToken) {\n    if (acToken) {\n        headers[\"Cache-Control\"] = \"no-cache\"\n        headers[\"Authorization\"] = \"Bearer \" + acToken\n    }\n    return headers\n}\n\n\nfunction addApiKey(url) {\n    let apiKey = igvxhr.apiKey\n    if (!apiKey && typeof gapi !== \"undefined\") {\n        apiKey = gapi.apiKey\n    }\n    if (apiKey !== undefined && !url.includes(\"key=\")) {\n        const paramSeparator = url.includes(\"?\") ? \"&\" : \"?\"\n        url = url + paramSeparator + \"key=\" + apiKey\n    }\n    return url\n}\n\nfunction addTeamDrive(url) {\n    if (url.includes(\"supportsTeamDrive\")) {\n        return url\n    } else {\n        const paramSeparator = url.includes(\"?\") ? \"&\" : \"?\"\n        url = url + paramSeparator + \"supportsTeamDrive=true\"\n    }\n}\n\nfunction parseResponseHeaders(headers) {\n\n    // Convert the header string into an array of individual headers\n    const arr = headers.trim().split(/[\\r\\n]+/)\n\n    // Create a map of header names to values\n    const headerMap = {}\n    for (let line of arr) {\n        const parts = line.split(\": \")\n        const header = parts.shift()\n        const value = parts.join(\": \")\n        headerMap[header] = value\n    }\n\n    return headerMap\n}\n\n/**\n * Perform some well-known url mappings.\n * @param url\n */\nfunction mapUrl(url) {\n\n    if (url.startsWith(\"https://www.dropbox.com\")) {\n        return url.replace(\"//www.dropbox.com\", \"//dl.dropboxusercontent.com\")\n    } else if (url.startsWith(\"https://drive.google.com\")) {\n        return GoogleDrive.getDriveDownloadURL(url)\n    } else if (url.includes(\"//www.broadinstitute.org/igvdata\")) {\n        return url.replace(\"//www.broadinstitute.org/igvdata\", \"//data.broadinstitute.org/igvdata\")\n    } else if (url.includes(\"//igvdata.broadinstitute.org\")) {\n        return url.replace(\"//igvdata.broadinstitute.org\", \"//s3.amazonaws.com/igv.broadinstitute.org\")\n    } else if (url.includes(\"//igv.genepattern.org\")) {\n        return url.replace(\"//igv.genepattern.org\", \"//igv-genepattern-org.s3.amazonaws.com\")\n    } else if (url.startsWith(\"ftp://ftp.ncbi.nlm.nih.gov/geo\")) {\n        return url.replace(\"ftp://\", \"https://\")\n    } else {\n        return url\n    }\n}\n\n\nfunction arrayBufferToString(arraybuffer) {\n\n    let plain\n    if (isgzipped(arraybuffer)) {\n        plain = ungzip(arraybuffer)\n    } else {\n        plain = new Uint8Array(arraybuffer)\n    }\n\n    if ('TextDecoder' in getGlobalObject()) {\n        return new TextDecoder().decode(plain)\n    } else {\n        return decodeUTF8(plain)\n    }\n}\n\n/**\n * Use when TextDecoder is not available (primarily IE).\n *\n * From: https://gist.github.com/Yaffle/5458286\n *\n * @param octets\n * @returns {string}\n */\nfunction decodeUTF8(octets) {\n    var string = \"\"\n    var i = 0\n    while (i < octets.length) {\n        var octet = octets[i]\n        var bytesNeeded = 0\n        var codePoint = 0\n        if (octet <= 0x7F) {\n            bytesNeeded = 0\n            codePoint = octet & 0xFF\n        } else if (octet <= 0xDF) {\n            bytesNeeded = 1\n            codePoint = octet & 0x1F\n        } else if (octet <= 0xEF) {\n            bytesNeeded = 2\n            codePoint = octet & 0x0F\n        } else if (octet <= 0xF4) {\n            bytesNeeded = 3\n            codePoint = octet & 0x07\n        }\n        if (octets.length - i - bytesNeeded > 0) {\n            var k = 0\n            while (k < bytesNeeded) {\n                octet = octets[i + k + 1]\n                codePoint = (codePoint << 6) | (octet & 0x3F)\n                k += 1\n            }\n        } else {\n            codePoint = 0xFFFD\n            bytesNeeded = octets.length - i\n        }\n        string += String.fromCodePoint(codePoint)\n        i += bytesNeeded + 1\n    }\n    return string\n}\n\n\nfunction getGlobalObject() {\n    if (typeof self !== 'undefined') {\n        return self\n    }\n    if (typeof global !== 'undefined') {\n        return global\n    } else {\n        return window\n    }\n}\n\nfunction isAmazonV4Signed(url) {\n    return url.indexOf(\"X-Amz-Signature\") > -1\n}\n\n\nconst igvxhr = new IGVXhr()\n\nexport default igvxhr\nexport {arrayBufferToString, mapUrl}\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/** An implementation of an interval tree, following the explanation.\n * from CLR.\n *\n * Public interface:\n *   Constructor  IntervalTree\n *   Insertion    insert\n *   Search       findOverlapping\n */\n\nvar BLACK = 1;\nvar RED = 2;\n\nvar NIL = {}\nNIL.color = BLACK;\nNIL.parent = NIL;\nNIL.left = NIL;\nNIL.right = NIL;\n\n\nclass IntervalTree {\n\n    constructor() {\n        this.root = NIL;\n    }\n\n    insert(start, end, value) {\n\n        var interval = new Interval(start, end, value);\n        var x = new Node(interval);\n        this.treeInsert(x);\n        x.color = RED;\n        while (x !== this.root && x.parent.color === RED) {\n            if (x.parent === x.parent.parent.left) {\n                let y = x.parent.parent.right;\n                if (y.color === RED) {\n                    x.parent.color = BLACK;\n                    y.color = BLACK;\n                    x.parent.parent.color = RED;\n                    x = x.parent.parent;\n                } else {\n                    if (x === x.parent.right) {\n                        x = x.parent;\n                        leftRotate.call(this, x);\n                    }\n                    x.parent.color = BLACK;\n                    x.parent.parent.color = RED;\n                    rightRotate.call(this, x.parent.parent);\n                }\n            } else {\n                let y = x.parent.parent.left;\n                if (y.color === RED) {\n                    x.parent.color = BLACK;\n                    y.color = BLACK;\n                    x.parent.parent.color = RED;\n                    x = x.parent.parent;\n                } else {\n                    if (x === x.parent.left) {\n                        x = x.parent;\n                        rightRotate.call(this, x);\n                    }\n                    x.parent.color = BLACK;\n                    x.parent.parent.color = RED;\n                    leftRotate.call(this, x.parent.parent);\n                }\n            }\n        }\n        this.root.color = BLACK;\n    }\n\n    /**\n     *\n     * @param start - query interval\n     * @param end - query interval\n     * @returns Array of all intervals overlapping the query region\n     */\n    findOverlapping(start, end) {\n\n\n        var searchInterval = new Interval(start, end, 0);\n\n        if (this.root === NIL) return [];\n\n        var intervals = searchAll.call(this, searchInterval, this.root, []);\n\n        if (intervals.length > 1) {\n            intervals.sort(function (i1, i2) {\n                return i1.low - i2.low;\n            });\n        }\n\n        return intervals;\n    }\n\n    /**\n     * Dump info on intervals to console.  For debugging.\n     */\n    logIntervals() {\n\n        logNode(this.root, 0);\n\n        function logNode(node, indent) {\n\n            var space = \"\";\n            for (var i = 0; i < indent; i++) space += \" \";\n            console.log(space + node.interval.low + \" \" + node.interval.high); // + \" \" + (node.interval.value ? node.interval.value : \" null\"));\n\n            indent += 5;\n\n            if (node.left !== NIL) logNode(node.left, indent);\n            if (node.right !== NIL) logNode(node.right, indent);\n        }\n\n    }\n\n    mapIntervals(func) {\n\n        applyInterval(this.root);\n\n        function applyInterval(node) {\n\n            func(node.interval);\n\n            if (node.left !== NIL) applyInterval(node.left);\n            if (node.right !== NIL) applyInterval(node.right);\n        }\n    }\n\n\n    /**\n     * Note:  Does not maintain RB constraints,  this is done post insert\n     *\n     * @param x  a Node\n     */\n    treeInsert(x) {\n        var node = this.root;\n        var y = NIL;\n        while (node !== NIL) {\n            y = node;\n            if (x.interval.low <= node.interval.low) {\n                node = node.left;\n            } else {\n                node = node.right;\n            }\n        }\n        x.parent = y;\n\n        if (y === NIL) {\n            this.root = x;\n            x.left = x.right = NIL;\n        } else {\n            if (x.interval.low <= y.interval.low) {\n                y.left = x;\n            } else {\n                y.right = x;\n            }\n        }\n\n        applyUpdate.call(this, x);\n    }\n}\n\nfunction searchAll(interval, node, results) {\n\n    if (node.interval.overlaps(interval)) {\n        results.push(node.interval);\n    }\n\n    if (node.left !== NIL && node.left.max >= interval.low) {\n        searchAll.call(this, interval, node.left, results);\n    }\n\n    if (node.right !== NIL && node.right.min <= interval.high) {\n        searchAll.call(this, interval, node.right, results);\n    }\n\n    return results;\n}\n\nfunction leftRotate(x) {\n    var y = x.right;\n    x.right = y.left;\n    if (y.left !== NIL) {\n        y.left.parent = x;\n    }\n    y.parent = x.parent;\n    if (x.parent === NIL) {\n        this.root = y;\n    } else {\n        if (x.parent.left === x) {\n            x.parent.left = y;\n        } else {\n            x.parent.right = y;\n        }\n    }\n    y.left = x;\n    x.parent = y;\n\n    applyUpdate.call(this, x);\n    // no need to apply update on y, since it'll y is an ancestor\n    // of x, and will be touched by applyUpdate().\n}\n\n\nfunction rightRotate(x) {\n    var y = x.left;\n    x.left = y.right;\n    if (y.right !== NIL) {\n        y.right.parent = x;\n    }\n    y.parent = x.parent;\n    if (x.parent === NIL) {\n        this.root = y;\n    } else {\n        if (x.parent.right === x) {\n            x.parent.right = y;\n        } else {\n            x.parent.left = y;\n        }\n    }\n    y.right = x;\n    x.parent = y;\n\n\n    applyUpdate.call(this, x);\n    // no need to apply update on y, since it'll y is an ancestor\n    // of x, and will be touched by applyUpdate().\n}\n\n\n// Applies the statistic update on the node and its ancestors.\nfunction applyUpdate(node) {\n    while (node !== NIL) {\n        var nodeMax = node.left.max > node.right.max ? node.left.max : node.right.max;\n        var intervalHigh = node.interval.high;\n        node.max = nodeMax > intervalHigh ? nodeMax : intervalHigh;\n\n        var nodeMin = node.left.min < node.right.min ? node.left.min : node.right.min;\n        var intervalLow = node.interval.low;\n        node.min = nodeMin < intervalLow ? nodeMin : intervalLow;\n\n        node = node.parent;\n    }\n}\n\n\nclass Interval {\n    constructor(low, high, value) {\n        this.low = low;\n        this.high = high;\n        this.value = value;\n    }\n\n    equals(other) {\n        if (!other) {\n            return false;\n        }\n        if (this === other) {\n            return true;\n        }\n        return (this.low === other.low &&\n            this.high === other.high);\n\n    }\n\n    compareTo(other) {\n        if (this.low < other.low)\n            return -1;\n        if (this.low > other.low)\n            return 1;\n\n        if (this.high < other.high)\n            return -1;\n        if (this.high > other.high)\n            return 1;\n\n        return 0;\n    }\n\n    /**\n     * Returns true if this interval overlaps the other.\n     */\n    overlaps(other) {\n            return (this.low <= other.high && other.low <= this.high);\n    }\n}\n\nfunction Node(interval) {\n    this.parent = NIL;\n    this.left = NIL;\n    this.right = NIL;\n    this.interval = interval;\n    this.color = RED;\n}\n\n\n//\n//\n//    function minimum(node) {\n//        while (node.left != NIL) {\n//            node = node.left;\n//        }\n//        return node;\n//    }\n//\n//\n//    function maximum(node) {\n//\n//        while (node.right != NIL) {\n//            node = node.right;\n//        }\n//        return node;\n//    }\n//\n//\n//    function successor(x) {\n//\n//        if (x.right != NIL) {\n//            return minimum(x.right);\n//        }\n//        var y = x.parent;\n//        while (y != NIL && x == y.right) {\n//            x = y;\n//            y = y.parent;\n//        }\n//        return y;\n//    }\n//\n//\n//    function predecessor(x) {\n//        if (x.left != NIL) {\n//            return maximum(x.left);\n//        }\n//        var y = x.parent;\n//        while (y != NIL && x == y.left) {\n//            x = y;\n//            y = y.parent;\n//        }\n//        return y;\n//    }\n//\n//\n//\n//    allRedNodesFollowConstraints = function (node) {\n//        if (node == NIL)\n//            return true;\n//\n//        if (node.color == BLACK) {\n//            return (this.allRedNodesFollowConstraints(node.left) &&\n//                this.allRedNodesFollowConstraints(node.right));\n//        }\n//\n//        // At this point, we know we're on a RED node.\n//        return (node.left.color == BLACK &&\n//            node.right.color == BLACK &&\n//            this.allRedNodesFollowConstraints(node.left) &&\n//            this.allRedNodesFollowConstraints(node.right));\n//    }\n//\n//\n//    // Check that both ends are equally balanced in terms of black height.\n//    isBalancedBlackHeight = function (node) {\n//        if (node == NIL)\n//            return true;\n//        return (blackHeight(node.left) == blackHeight(node.right) &&\n//            this.isBalancedBlackHeight(node.left) &&\n//            this.isBalancedBlackHeight(node.right));\n//    }\n//\n//\n//    // The black height of a node should be left/right equal.\n//    blackHeight = function (node) {\n//        if (node == NIL)\n//            return 0;\n//        var leftBlackHeight = blackHeight(node.left);\n//        if (node.color == BLACK) {\n//            return leftBlackHeight + 1;\n//        } else {\n//            return leftBlackHeight;\n//        }\n//    }\n\n\n/**\n * Test code: make sure that the tree has all the properties\n * defined by Red Black trees and interval trees\n * <p/>\n * o.  Root is black.\n * <p/>\n * o.  NIL is black.\n * <p/>\n * o.  Red nodes have black children.\n * <p/>\n * o.  Every path from root to leaves contains the same number of\n * black nodes.\n * <p/>\n * o.  getMax(node) is the maximum of any interval rooted at that node..\n * <p/>\n * This code is expensive, and only meant to be used for\n * assertions and testing.\n */\n//\n//    isValid = function () {\n//        if (this.root.color != BLACK) {\n//            logger.warn(\"root color is wrong\");\n//            return false;\n//        }\n//        if (NIL.color != BLACK) {\n//            logger.warn(\"NIL color is wrong\");\n//            return false;\n//        }\n//        if (allRedNodesFollowConstraints(this.root) == false) {\n//            logger.warn(\"red node doesn't follow constraints\");\n//            return false;\n//        }\n//        if (isBalancedBlackHeight(this.root) == false) {\n//            logger.warn(\"black height unbalanced\");\n//            return false;\n//        }\n//\n//        return hasCorrectMaxFields(this.root) &&\n//            hasCorrectMinFields(this.root);\n//    }\n//\n//\n//    hasCorrectMaxFields = function (node) {\n//        if (node == NIL)\n//            return true;\n//        return (getRealMax(node) == (node.max) &&\n//            this.hasCorrectMaxFields(node.left) &&\n//            this.hasCorrectMaxFields(node.right));\n//    }\n//\n//\n//    hasCorrectMinFields = function (node) {\n//        if (node == NIL)\n//            return true;\n//        return (getRealMin(node) == (node.min) &&\n//            this.hasCorrectMinFields(node.left) &&\n//            this.hasCorrectMinFields(node.right));\n//    }\n\nexport default IntervalTree;\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport IntervalTree from \"./intervalTree.js\";\n\n/**\n * Object for caching lists of features.  Supports effecient queries for sub-range  (chr, start, end)\n *\n * @param featureList\n * @param The genomic range spanned by featureList (optional)\n * @constructor\n */\n\nclass FeatureCache {\n\n    constructor(featureList, genome, range) {\n\n        featureList = featureList || [];\n        this.treeMap = this.buildTreeMap(featureList, genome);\n        this.range = range;\n        this.count = featureList.length;\n    }\n\n    containsRange(genomicRange) {\n        // No range means cache contains all features\n        return (this.range === undefined || this.range.contains(genomicRange.chr, genomicRange.start, genomicRange.end));\n    }\n\n    queryFeatures(chr, start, end) {\n\n        const tree = this.treeMap[chr];\n\n        if (!tree) return [];\n\n        const intervals = tree.findOverlapping(start, end);\n\n        if (intervals.length === 0) {\n            return [];\n        } else {\n            // Trim the list of features in the intervals to those\n            // overlapping the requested range.\n            // Assumption: features are sorted by start position\n\n            const featureList = [];\n            const all = this.allFeatures[chr];\n            if (all) {\n                for (let interval of intervals) {\n                    const indexRange = interval.value;\n                    for (let i = indexRange.start; i < indexRange.end; i++) {\n                        let feature = all[i];\n                        if (feature.start > end) break;\n                        else if (feature.end >= start) {\n                            featureList.push(feature);\n                        }\n                    }\n                }\n                featureList.sort(function (a, b) {\n                    return a.start - b.start;\n                });\n            }\n            return featureList;\n        }\n    };\n\n    /**\n     * Returns all features, unsorted.\n     *\n     * @returns {Array}\n     */\n    getAllFeatures() {\n        return this.allFeatures;\n    }\n\n    buildTreeMap(featureList, genome) {\n\n        const treeMap = {};\n        const chromosomes = [];\n        this.allFeatures = {};\n\n        if (featureList) {\n            for (let feature of featureList) {\n\n                let chr = feature.chr;\n                // Translate to \"official\" name\n                if (genome) {\n                    chr = genome.getChromosomeName(chr);\n                }\n\n                let geneList = this.allFeatures[chr];\n                if (!geneList) {\n                    chromosomes.push(chr);\n                    geneList = [];\n                    this.allFeatures[chr] = geneList;\n                }\n                geneList.push(feature);\n            }\n\n\n            // Now build interval tree for each chromosome\n            for (let chr of chromosomes) {\n                const chrFeatures = this.allFeatures[chr];\n                chrFeatures.sort(function (f1, f2) {\n                    return (f1.start === f2.start ? 0 : (f1.start > f2.start ? 1 : -1));\n                });\n                treeMap[chr] = buildIntervalTree(chrFeatures);\n            }\n        }\n\n        return treeMap;\n    }\n}\n\n/**\n * Build an interval tree from the feature list for fast interval based queries.   We lump features in groups\n * of 10, or total size / 100,   to reduce size of the tree.\n *\n * @param featureList\n */\nfunction buildIntervalTree(featureList) {\n\n    const tree = new IntervalTree();\n    const len = featureList.length;\n    const chunkSize = Math.max(10, Math.round(len / 10));\n\n    for (let i = 0; i < len; i += chunkSize) {\n        const e = Math.min(len, i + chunkSize);\n        const subArray = new IndexRange(i, e); //featureList.slice(i, e);\n        const iStart = featureList[i].start;\n        //\n        let iEnd = iStart;\n        for (let j = i; j < e; j++) {\n            iEnd = Math.max(iEnd, featureList[j].end);\n        }\n        tree.insert(iStart, iEnd, subArray);\n    }\n\n    return tree;\n}\n\n\nclass IndexRange {\n    constructor(start, end) {\n        this.start = start;\n        this.end = end;\n    }\n}\n\nexport default FeatureCache;","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport IntervalTree from \"./intervalTree.js\";\n\nconst FeatureUtils = {\n\n    packFeatures: function (features, maxRows, sorted) {\n\n        var start;\n        var end;\n\n        if (!features) return;\n\n        maxRows = maxRows || 10000;\n\n        if (!sorted) {\n            features.sort(function (a, b) {\n                return a.start - b.start;\n            });\n        }\n\n\n        if (features.length === 0) {\n            return [];\n\n        } else {\n\n            var bucketList = [],\n                allocatedCount = 0,\n                lastAllocatedCount = 0,\n                nextStart,\n                row,\n                index,\n                bucket,\n                feature,\n                gap = 2,\n                bucketStart;\n\n            start = features[0].start;\n            end = features[features.length - 1].start;\n\n            bucketStart = Math.max(start, features[0].start);\n            nextStart = bucketStart;\n\n            features.forEach(function (alignment) {\n\n                var buckListIndex = Math.max(0, alignment.start - bucketStart);\n                if (bucketList[buckListIndex] === undefined) {\n                    bucketList[buckListIndex] = [];\n                }\n                bucketList[buckListIndex].push(alignment);\n            });\n\n\n            row = 0;\n\n\n            while (allocatedCount < features.length && row <= maxRows) {\n\n\n                while (nextStart <= end) {\n\n                    bucket = undefined;\n\n                    while (!bucket && nextStart <= end) {\n\n                        index = nextStart - bucketStart;\n                        if (bucketList[index] === undefined) {\n                            ++nextStart;                     // No buckets at this index\n                        } else {\n                            bucket = bucketList[index];\n                        }\n\n                    } // while (bucket)\n\n                    if (!bucket) {\n                        break;\n                    }\n                    feature = bucket.pop();\n                    if (0 === bucket.length) {\n                        bucketList[index] = undefined;\n                    }\n\n                    feature.row = row;\n\n                    nextStart = feature.end + gap;\n                    ++allocatedCount;\n\n                } // while (nextStart)\n\n                row++;\n                nextStart = bucketStart;\n\n                if (allocatedCount === lastAllocatedCount) break;   // Protect from infinite loops\n\n                lastAllocatedCount = allocatedCount;\n\n            } // while (allocatedCount)\n\n        }\n    },\n\n\n    /**\n     * Find features overlapping the given interval.  It is assumed that all features share the same chromosome.\n     *\n     * TODO -- significant overlap with FeatureCache, refactor to combine\n     *\n     * @param featureList\n     * @param start\n     * @param end\n     */\n    findOverlapping: function (featureList, start, end) {\n\n        if (!featureList || featureList.length === 0) {\n            return [];\n        } else {\n            const tree = buildIntervalTree(featureList);\n            const intervals = tree.findOverlapping(start, end);\n\n            if (intervals.length === 0) {\n                return [];\n            } else {\n                // Trim the list of features in the intervals to those\n                // overlapping the requested range.\n                // Assumption: features are sorted by start position\n\n                featureList = [];\n\n                intervals.forEach(function (interval) {\n                    const intervalFeatures = interval.value;\n                    const len = intervalFeatures.length;\n                    for (let i = 0; i < len; i++) {\n                        const feature = intervalFeatures[i];\n                        if (feature.start > end) break;\n                        else if (feature.end > start) {\n                            featureList.push(feature);\n                        }\n                    }\n                });\n\n                featureList.sort(function (a, b) {\n                    return a.start - b.start;\n                });\n\n                return featureList;\n            }\n        }\n\n    }\n}\n\n\n/**\n * Build an interval tree from the feature list for fast interval based queries.   We lump features in groups\n * of 10, or total size / 100,   to reduce size of the tree.\n *\n * @param featureList\n */\nfunction buildIntervalTree(featureList) {\n\n    const tree = new IntervalTree();\n    const len = featureList.length;\n    const chunkSize = Math.max(10, Math.round(len / 100));\n\n    featureList.sort(function (f1, f2) {\n        return (f1.start === f2.start ? 0 : (f1.start > f2.start ? 1 : -1));\n    });\n\n    for (let i = 0; i < len; i += chunkSize) {\n        const e = Math.min(len, i + chunkSize);\n        const subArray = featureList.slice(i, e);\n        const iStart = subArray[0].start;\n        let iEnd = iStart;\n        subArray.forEach(function (feature) {\n            iEnd = Math.max(iEnd, feature.end);\n        });\n        tree.insert(iStart, iEnd, subArray);\n    }\n\n    return tree;\n}\n\nexport default FeatureUtils;\n","import {IGVMath} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst appleCrayonPalette =\n    {\n        licorice: \"#000000\",\n        lead: \"#1e1e1e\",\n        tungsten: \"#3a3a3a\",\n        iron: \"#545453\",\n        steel: \"#6e6e6e\",\n        tin: \"#878687\",\n        nickel: \"#888787\",\n        aluminum: \"#a09fa0\",\n        magnesium: \"#b8b8b8\",\n        silver: \"#d0d0d0\",\n        mercury: \"#e8e8e8\",\n        snow: \"white\",\n        //\n        cayenne: \"#891100\",\n        mocha: \"#894800\",\n        aspargus: \"#888501\",\n        fern: \"#458401\",\n        clover: \"#028401\",\n        moss: \"#018448\",\n        teal: \"#008688\",\n        ocean: \"#004a88\",\n        midnight: \"#001888\",\n        eggplant: \"#491a88\",\n        plum: \"#891e88\",\n        maroon: \"#891648\",\n        //\n        maraschino: \"#ff2101\",\n        tangerine: \"#ff8802\",\n        lemon: \"#fffa03\",\n        lime: \"#83f902\",\n        spring: \"#05f802\",\n        sea_foam: \"#03f987\",\n        turquoise: \"#00fdff\",\n        aqua: \"#008cff\",\n        blueberry: \"#002eff\",\n        grape: \"#8931ff\",\n        magenta: \"#ff39ff\",\n        strawberry: \"#ff2987\",\n        //\n        salmon: \"#ff726e\",\n        cantaloupe: \"#ffce6e\",\n        banana: \"#fffb6d\",\n        honeydew: \"#cefa6e\",\n        flora: \"#68f96e\",\n        spindrift: \"#68fbd0\",\n        ice: \"#68fdff\",\n        sky: \"#6acfff\",\n        orchid: \"#6e76ff\",\n        lavender: \"#d278ff\",\n        bubblegum: \"#ff7aff\",\n        carnation: \"#ff7fd3\"\n    }\n\nconst appleCrayonRGBPalette =\n    {\n        cantaloupe: {r: 255, g: 206, b: 110},\n        honeydew: {r: 206, g: 250, b: 110},\n        spindrift: {r: 104, g: 251, b: 208},\n        sky: {r: 106, g: 207, b: 255},\n        lavender: {r: 210, g: 120, b: 255},\n        carnation: {r: 255, g: 127, b: 211},\n        licorice: {r: 0, g: 0, b: 0},\n        snow: {r: 255, g: 255, b: 255},\n        salmon: {r: 255, g: 114, b: 110},\n        banana: {r: 255, g: 251, b: 109},\n        flora: {r: 104, g: 249, b: 110},\n        ice: {r: 104, g: 253, b: 255},\n        orchid: {r: 110, g: 118, b: 255},\n        bubblegum: {r: 255, g: 122, b: 255},\n        lead: {r: 30, g: 30, b: 30},\n        mercury: {r: 232, g: 232, b: 232},\n        tangerine: {r: 255, g: 136, b: 2},\n        lime: {r: 131, g: 249, b: 2},\n        sea_foam: {r: 3, g: 249, b: 135},\n        aqua: {r: 0, g: 140, b: 255},\n        grape: {r: 137, g: 49, b: 255},\n        strawberry: {r: 255, g: 41, b: 135},\n        tungsten: {r: 58, g: 58, b: 58},\n        silver: {r: 208, g: 208, b: 208},\n        maraschino: {r: 255, g: 33, b: 1},\n        lemon: {r: 255, g: 250, b: 3},\n        spring: {r: 5, g: 248, b: 2},\n        turquoise: {r: 0, g: 253, b: 255},\n        blueberry: {r: 0, g: 46, b: 255},\n        magenta: {r: 255, g: 57, b: 255},\n        iron: {r: 84, g: 84, b: 83},\n        magnesium: {r: 184, g: 184, b: 184},\n        mocha: {r: 137, g: 72, b: 0},\n        fern: {r: 69, g: 132, b: 1},\n        moss: {r: 1, g: 132, b: 72},\n        ocean: {r: 0, g: 74, b: 136},\n        eggplant: {r: 73, g: 26, b: 136},\n        maroon: {r: 137, g: 22, b: 72},\n        steel: {r: 110, g: 110, b: 110},\n        aluminum: {r: 160, g: 159, b: 160},\n        cayenne: {r: 137, g: 17, b: 0},\n        aspargus: {r: 136, g: 133, b: 1},\n        clover: {r: 2, g: 132, b: 1},\n        teal: {r: 0, g: 134, b: 136},\n        midnight: {r: 0, g: 24, b: 136},\n        plum: {r: 137, g: 30, b: 136},\n        tin: {r: 135, g: 134, b: 135},\n        nickel: {r: 136, g: 135, b: 135}\n    }\n\nfunction appleCrayonRGB(name) {\n    const {r, g, b} = appleCrayonRGBPalette[name]\n    return `rgb(${r},${g},${b})`\n}\n\nfunction appleCrayonRGBA(name, alpha) {\n    const {r, g, b} = appleCrayonRGBPalette[name]\n    return `rgba(${r},${g},${b},${alpha})`\n}\n\nconst colorPalettes = {\n\n    Set1:\n        [\n            \"rgb(228,26,28)\",\n            \"rgb(55,126,184)\",\n            \"rgb(77,175,74)\",\n            \"rgb(166,86,40)\",\n            \"rgb(152,78,163)\",\n            \"rgb(255,127,0)\",\n            \"rgb(247,129,191)\",\n            \"rgb(153,153,153)\",\n            \"rgb(255,255,51)\"\n        ],\n\n    Dark2:\n        [\n            \"rgb(27,158,119)\",\n            \"rgb(217,95,2)\",\n            \"rgb(117,112,179)\",\n            \"rgb(231,41,138)\",\n            \"rgb(102,166,30)\",\n            \"rgb(230,171,2)\",\n            \"rgb(166,118,29)\",\n            \"rgb(102,102,102)\"\n        ],\n\n    Set2:\n        [\n            \"rgb(102, 194,165)\",\n            \"rgb(252,141,98)\",\n            \"rgb(141,160,203)\",\n            \"rgb(231,138,195)\",\n            \"rgb(166,216,84)\",\n            \"rgb(255,217,47)\",\n            \"rgb(229,196,148)\",\n            \"rgb(179,179,179)\"\n        ],\n\n    Set3:\n        [\n            \"rgb(141,211,199)\",\n            \"rgb(255,255,179)\",\n            \"rgb(190,186,218)\",\n            \"rgb(251,128,114)\",\n            \"rgb(128,177,211)\",\n            \"rgb(253,180,98)\",\n            \"rgb(179,222,105)\",\n            \"rgb(252,205,229)\",\n            \"rgb(217,217,217)\",\n            \"rgb(188,128,189)\",\n            \"rgb(204,235,197)\",\n            \"rgb(255,237,111)\"\n        ],\n\n    Pastel1:\n        [\n            \"rgb(251,180,174)\",\n            \"rgb(179,205,227)\",\n            \"rgb(204,235,197)\",\n            \"rgb(222,203,228)\",\n            \"rgb(254,217,166)\",\n            \"rgb(255,255,204)\",\n            \"rgb(229,216,189)\",\n            \"rgb(253,218,236)\"\n        ],\n\n    Pastel2:\n        [\n            \"rgb(173,226,207)\",\n            \"rgb(253,205,172)\",\n            \"rgb(203,213,232)\",\n            \"rgb(244,202,228)\",\n            \"rgb(230,245,201)\",\n            \"rgb(255,242,174)\",\n            \"rgb(243,225,206)\"\n        ],\n\n    Accent:\n        [\n            \"rgb(127,201,127)\",\n            \"rgb(190,174,212)\",\n            \"rgb(253,192,134)\",\n            \"rgb(255,255,153)\",\n            \"rgb(56,108,176)\",\n            \"rgb(240,2,127)\",\n            \"rgb(191,91,23)\"\n        ]\n}\n\nclass PaletteColorTable {\n\n    constructor(palette) {\n        this.colors = colorPalettes[palette]\n        if (!Array.isArray(this.colors)) this.colors = []\n        this.colorTable = {}\n        this.nextIdx = 0\n        this.colorGenerator = new RandomColorGenerator()\n    }\n\n    getColor(key) {\n        if (!this.colorTable.hasOwnProperty(key)) {\n            if (this.nextIdx < this.colors.length) {\n                this.colorTable[key] = this.colors[this.nextIdx]\n            } else {\n                this.colorTable[key] = this.colorGenerator.get()\n            }\n            this.nextIdx++\n        }\n        return this.colorTable[key]\n    }\n}\n\nclass ColorTable {\n    constructor(colors) {\n        this.colorTable = colors || {}\n        this.nextIdx = 0\n        this.colorGenerator = new RandomColorGenerator()\n    }\n\n    getColor(key) {\n        if (!this.colorTable.hasOwnProperty(key)) {\n            if (this.colorTable.hasOwnProperty(\"*\")) {\n                return this.colorTable[\"*\"]\n            }\n            this.colorTable[key] = this.colorGenerator.get()\n        }\n        return this.colorTable[key]\n    }\n}\n\n// Random color generator from https://github.com/sterlingwes/RandomColor/blob/master/rcolor.js\n// Free to use & distribute under the MIT license\n// Wes Johnson (@SterlingWes)\n//\n// inspired by http://martin.ankerl.com/2009/12/09/how-to-create-random-colors-programmatically/\nfunction RandomColorGenerator() {\n    this.hue = Math.random()\n    this.goldenRatio = 0.618033988749895\n    this.hexwidth = 2\n}\n\nRandomColorGenerator.prototype.hsvToRgb = function (h, s, v) {\n    var h_i = Math.floor(h * 6),\n        f = h * 6 - h_i,\n        p = v * (1 - s),\n        q = v * (1 - f * s),\n        t = v * (1 - (1 - f) * s),\n        r = 255,\n        g = 255,\n        b = 255\n    switch (h_i) {\n        case 0:\n            r = v, g = t, b = p\n            break\n        case 1:\n            r = q, g = v, b = p\n            break\n        case 2:\n            r = p, g = v, b = t\n            break\n        case 3:\n            r = p, g = q, b = v\n            break\n        case 4:\n            r = t, g = p, b = v\n            break\n        case 5:\n            r = v, g = p, b = q\n            break\n    }\n    return [Math.floor(r * 256), Math.floor(g * 256), Math.floor(b * 256)]\n}\n\nRandomColorGenerator.prototype.padHex = function (str) {\n    if (str.length > this.hexwidth) return str\n    return new Array(this.hexwidth - str.length + 1).join('0') + str\n}\n\nRandomColorGenerator.prototype.get = function (saturation, value) {\n    this.hue += this.goldenRatio\n    this.hue %= 1\n    if (typeof saturation !== \"number\") saturation = 0.5\n    if (typeof value !== \"number\") value = 0.95\n    var rgb = this.hsvToRgb(this.hue, saturation, value)\n\n    return \"#\" + this.padHex(rgb[0].toString(16))\n        + this.padHex(rgb[1].toString(16))\n        + this.padHex(rgb[2].toString(16))\n\n}\n\nconst randomColorGenerator = new RandomColorGenerator()\n\nfunction randomColor() {\n    return randomColorGenerator.get()\n}\n\n// Returns a random number between min (inclusive) and max (exclusive)\nfunction random(min, max) {\n    return Math.random() * (max - min) + min\n}\n\n// Used to generate color list\n// let hexs = [];\n// for (let rgbList of Object.values(colorPalettes)) {\n//     for (let rgb of rgbList) {\n//         let obj = {};\n//         obj[ rgb ] = IGVColor.rgbToHex(rgb);\n//         hexs.push(obj);\n//     }\n// }\n\nfunction randomRGBConstantAlpha(min, max, alpha) {\n\n    min = IGVMath.clamp(min, 0, 255)\n    max = IGVMath.clamp(max, 0, 255)\n\n    const r = Math.round(Math.random() * (max - min) + min).toString(10)\n    const g = Math.round(Math.random() * (max - min) + min).toString(10)\n    const b = Math.round(Math.random() * (max - min) + min).toString(10)\n    return `rgba(${r},${g},${b}, ${alpha})`\n\n}\n\nfunction rgbaColor(r, g, b, a) {\n    r = IGVMath.clamp(r, 0, 255)\n    g = IGVMath.clamp(g, 0, 255)\n    b = IGVMath.clamp(b, 0, 255)\n    a = IGVMath.clamp(a, 0.0, 1.0)\n    return `rgba(${r}, ${g}, ${b}, ${a})`\n}\n\nfunction rgbColor(r, g, b) {\n    r = IGVMath.clamp(r, 0, 255)\n    g = IGVMath.clamp(g, 0, 255)\n    b = IGVMath.clamp(b, 0, 255)\n    return `rgb(${r}, ${g}, ${b})`\n}\n\nfunction greyScale(value) {\n    value = IGVMath.clamp(value, 0, 255)\n    return `rgb(${value}, ${value}, ${value})`\n}\n\nfunction randomRGB(min, max) {\n\n    min = IGVMath.clamp(min, 0, 255)\n    max = IGVMath.clamp(max, 0, 255)\n\n    const r = Math.round(Math.random() * (max - min) + min).toString(10)\n    const g = Math.round(Math.random() * (max - min) + min).toString(10)\n    const b = Math.round(Math.random() * (max - min) + min).toString(10)\n    return `rgb(${r},${g},${b})`\n\n}\n\nfunction randomGrey(min, max) {\n\n    min = IGVMath.clamp(min, 0, 255)\n    max = IGVMath.clamp(max, 0, 255)\n\n    const value = Math.round(Math.random() * (max - min) + min).toString(10)\n    return `rgb(${value},${value},${value})`\n\n}\n\nfunction rgbaStringTokens(rgbaString) {\n\n    if (rgbaString.startsWith('rgba(')) {\n\n        const [ignore, pass0 ] = rgbaString.split('(')\n\n        const [ rgba ] = pass0.split(')')\n\n        return rgba.split(',').map((string, index) => index < 3 ? parseInt(string) : parseFloat(string))\n\n    } else {\n        return undefined\n    }\n}\n\nexport {\n    appleCrayonRGB,\n    appleCrayonRGBA,\n    appleCrayonPalette,\n    ColorTable,\n    PaletteColorTable,\n    randomColor,\n    rgbaColor,\n    rgbColor,\n    greyScale,\n    randomGrey,\n    randomRGB,\n    randomRGBConstantAlpha,\n    rgbaStringTokens\n}\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of ctx software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and ctx permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n// Collection of helper functions for canvas rendering.  The \"ctx\" paramter in these functions is a canvas 2d context.\n//\n// Example usage\n//\n//    IGVGraphics.strokeLine(context, 0, 0, 10, 10);\n//\n\nimport {randomRGB} from \"./util/colorPalletes.js\";\n\nvar debug = false\n\nvar log = function (msg) {\n    if (debug) {\n        var d = new Date()\n        var time = d.getHours() + \":\" + d.getMinutes() + \":\" + d.getSeconds()\n        if (typeof console != \"undefined\") {\n            console.log(\"igv-canvas: \" + time + \" \" + msg)\n        }\n    }\n}\n\n\nconst IGVGraphics = {\n\n    configureHighDPICanvas: function (ctx, w, h) {\n\n        const scaleFactor = window.devicePixelRatio\n        // const scaleFactor = 1\n\n        ctx.canvas.style.width = (`${w}px`)\n        ctx.canvas.width = Math.floor(scaleFactor * w)\n\n        ctx.canvas.style.height = (`${h}px`)\n        ctx.canvas.height = Math.floor(scaleFactor * h)\n\n        ctx.scale(scaleFactor, scaleFactor)\n\n    },\n\n    setProperties: function (ctx, properties) {\n\n        for (var key in properties) {\n            if (properties.hasOwnProperty(key)) {\n                var value = properties[key]\n                ctx[key] = value\n            }\n        }\n    },\n\n    strokeLine: function (ctx, x1, y1, x2, y2, properties) {\n\n        x1 = Math.floor(x1) + 0.5\n        y1 = Math.floor(y1) + 0.5\n        x2 = Math.floor(x2) + 0.5\n        y2 = Math.floor(y2) + 0.5\n\n        log(\"stroke line, prop: \" + properties)\n\n        if (properties) {\n            ctx.save()\n            IGVGraphics.setProperties(ctx, properties)\n        }\n\n        ctx.beginPath()\n        ctx.moveTo(x1, y1)\n        ctx.lineTo(x2, y2)\n        ctx.stroke()\n\n        if (properties) ctx.restore()\n    },\n\n    fillRect: function (ctx, x, y, w, h, properties) {\n\n        var c\n        x = Math.round(x)\n        y = Math.round(y)\n\n        if (properties) {\n            ctx.save()\n            IGVGraphics.setProperties(ctx, properties)\n        }\n\n        ctx.fillRect(x, y, w, h)\n\n        if (properties) ctx.restore()\n    },\n\n    fillPolygon: function (ctx, x, y, properties) {\n        if (properties) {\n            ctx.save()\n            IGVGraphics.setProperties(ctx, properties)\n        }\n        doPath(ctx, x, y)\n        ctx.fill()\n        if (properties) ctx.restore()\n    },\n\n    strokePolygon: function (ctx, x, y, properties) {\n        if (properties) {\n            ctx.save()\n            IGVGraphics.setProperties(ctx, properties)\n        }\n        doPath(ctx, x, y)\n        ctx.stroke()\n        if (properties) ctx.restore()\n    },\n\n    fillText: function (ctx, text, x, y, properties, transforms) {\n\n        if (properties || transforms) {\n            ctx.save()\n        }\n\n        if (properties) {\n            IGVGraphics.setProperties(ctx, properties)\n        }\n\n        if (transforms) {\n            // Slow path with context saving and extra translate\n            ctx.translate(x, y)\n\n            for (var transform in transforms) {\n                var value = transforms[transform]\n\n                // TODO: Add error checking for robustness\n                if (transform === 'translate') {\n                    ctx.translate(value['x'], value['y'])\n                }\n                if (transform === 'rotate') {\n                    ctx.rotate(value['angle'] * Math.PI / 180)\n                }\n            }\n\n            ctx.fillText(text, 0, 0)\n        } else {\n            ctx.fillText(text, x, y)\n        }\n\n        if (properties || transforms) ctx.restore()\n    },\n\n    strokeText: function (ctx, text, x, y, properties, transforms) {\n\n\n        if (properties || transforms) {\n            ctx.save()\n        }\n\n        if (properties) {\n            IGVGraphics.setProperties(ctx, properties)\n        }\n\n        if (transforms) {\n            ctx.translate(x, y)\n\n            for (var transform in transforms) {\n                var value = transforms[transform]\n\n                // TODO: Add error checking for robustness\n                if (transform === 'translate') {\n                    ctx.translate(value['x'], value['y'])\n                }\n                if (transform === 'rotate') {\n                    ctx.rotate(value['angle'] * Math.PI / 180)\n                }\n            }\n\n            ctx.strokeText(text, 0, 0)\n        } else {\n            ctx.strokeText(text, x, y)\n        }\n\n        if (properties || transforms) ctx.restore()\n    },\n\n    strokeCircle: function (ctx, x, y, radius, properties) {\n        if (properties) {\n            ctx.save()\n            IGVGraphics.setProperties(ctx, properties)\n        }\n        ctx.beginPath()\n        ctx.arc(x, y, radius, 0, 2 * Math.PI)\n        ctx.stroke()\n        if (properties) ctx.restore()\n    },\n\n    fillCircle: function (ctx, x, y, radius, properties) {\n        if (properties) {\n            ctx.save()\n            IGVGraphics.setProperties(ctx, properties)\n        }\n        ctx.beginPath()\n        ctx.arc(x, y, radius, 0, 2 * Math.PI)\n        ctx.fill()\n        if (properties) ctx.restore()\n    },\n\n    drawArrowhead: function (ctx, x, y, size, lineWidth) {\n\n        ctx.save()\n        if (!size) {\n            size = 5\n        }\n        if (lineWidth) {\n            ctx.lineWidth = lineWidth\n        }\n        ctx.beginPath()\n        ctx.moveTo(x, y - size / 2)\n        ctx.lineTo(x, y + size / 2)\n        ctx.lineTo(x + size, y)\n        ctx.lineTo(x, y - size / 2)\n        ctx.closePath()\n        ctx.fill()\n        ctx.restore()\n    },\n\n    dashedLine: function (ctx, x1, y1, x2, y2, dashLen, properties = {}) {\n        if (dashLen === undefined) dashLen = 2\n        ctx.setLineDash([dashLen, dashLen])\n        IGVGraphics.strokeLine(ctx, x1, y1, x2, y2, properties)\n        ctx.setLineDash([])\n    },\n\n    roundRect: function (ctx, x, y, width, height, radius, fill, stroke) {\n\n        if (typeof stroke == \"undefined\") {\n            stroke = true\n        }\n        if (typeof radius === \"undefined\") {\n            radius = 5\n        }\n        ctx.beginPath()\n        ctx.moveTo(x + radius, y)\n        ctx.lineTo(x + width - radius, y)\n        ctx.quadraticCurveTo(x + width, y, x + width, y + radius)\n        ctx.lineTo(x + width, y + height - radius)\n        ctx.quadraticCurveTo(x + width, y + height, x + width - radius, y + height)\n        ctx.lineTo(x + radius, y + height)\n        ctx.quadraticCurveTo(x, y + height, x, y + height - radius)\n        ctx.lineTo(x, y + radius)\n        ctx.quadraticCurveTo(x, y, x + radius, y)\n        ctx.closePath()\n        if (stroke) {\n            ctx.stroke()\n        }\n        if (fill) {\n            ctx.fill()\n        }\n    },\n    polygon: function (ctx, x, y, fill, stroke) {\n\n        if (typeof stroke == \"undefined\") {\n            stroke = true\n        }\n\n        ctx.beginPath()\n        var len = x.length\n        ctx.moveTo(x[0], y[0])\n        for (var i = 1; i < len; i++) {\n            ctx.lineTo(x[i], y[i])\n            // this.moveTo(x[i], y[i]);\n        }\n\n        ctx.closePath()\n        if (stroke) {\n            ctx.stroke()\n        }\n        if (fill) {\n            ctx.fill()\n        }\n    },\n\n    drawRandomColorVerticalLines: ctx => {\n        for (let x = 0; x < ctx.canvas.width; x++) {\n            IGVGraphics.fillRect(ctx, x, 0, 1, ctx.canvas.height, { fillStyle: randomRGB(100, 250) })\n        }\n    },\n\n    labelTransformWithContext: (ctx, exe) => {\n        ctx.translate(exe, 0);\n        ctx.scale(-1, 1);\n        ctx.translate(-exe, 0);\n    }\n\n}\n\nfunction doPath(ctx, x, y) {\n\n\n    var i, len = x.length\n    for (i = 0; i < len; i++) {\n        x[i] = Math.round(x[i])\n        y[i] = Math.round(y[i])\n    }\n\n    ctx.beginPath()\n    ctx.moveTo(x[0], y[0])\n    for (i = 1; i < len; i++) {\n        ctx.lineTo(x[i], y[i])\n    }\n    ctx.closePath()\n}\n\nexport default IGVGraphics\n\n","import { AlertDialog } from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass Alert {\n    constructor(parent) {\n        this.dialog = new AlertDialog(parent)\n\n    }\n\n    present(alert, callback) {\n        this.dialog.present(alert, callback)\n    }\n}\n\nexport default Alert\n","const FileFormats = {\n\n    gwascatalog: {\n        fields: [\n            'bin',\n            'chr',\n            'start',\n            'end',\n            'name',\n            'pubMedID',\n            'author',\n            'pubDate',\n            'journal',\n            'title',\n            'trait',\n            'initSample',\n            'replSample',\n            'region',\n            'genes',\n            'riskAllele',\n            'riskAlFreq',\n            'pValue',\n            'pValueDesc',\n            'orOrBeta',\n            'ci95',\n            'platform',\n            'cnv'\n        ]\n    },\n\n    wgrna: {\n        fields:\n            [\n                'bin',\n                'chr',\n                'start',\n                'end',\n                'name',\n                'score',\n                'strand',\n                'thickStart',\n                'thickEnd',\n                'type'\n            ]\n    },\n\n    cpgislandext: {\n        fields:\n\n            [\n                'bin',\n                'chr',\n                'start',\n                'end',\n                'name',\n                'length',\n                'cpgNum',\n                'gcNum',\n                'perCpg',\n                'perGc',\n                'obsExp'\n            ]\n    },\n\n    clinVarMain: {\n        fields: [\n            'chr1',\n            'start',\n            'end',\n            'name',\n            'score',\n            'strand',\n            'thickStart',\n            'thickEnd',\n            'reserved',\n            'blockCount',  // Number of blocks\n            'blockSizes',  // Comma separated list of block sizes\n            'chromStarts', // Start positions relative to chromStart\n            'origName',    // NM_198053.2(CD247):c.462C>T (p.Asp154=)\tClinVar Variation Report\n            'clinSign',    // Likely benign\tClinical significance\n            'reviewStatus', // \tbased on: criteria provided,single submitter\tReview Status\n            'type',         // single nucleotide variant\tType of Variant\n            'geneId', \t    // CD247\tGene Symbol\n            'snpId',       //\t181656780\tdbSNP ID\n            'nsvId',       //\t\tdbVar ID\n            'rcvAcc',      //\tRCV000642347\tClinVar Allele Submission\n            'testedInGtr', //\tN\tGenetic Testing Registry\n            'phenotypeList', //\tImmunodeficiency due to defect in cd3-zeta\tPhenotypes\n            'phenotype', //\tMedGen:C1857798, OMIM:610163\tPhenotype identifiers\n            'origin', //\tgermline\tData origin\n            'assembly', //\tGRCh37\tGenome assembly\n            'cytogenetic', //\t1q24.2\tCytogenetic status\n            'hgvsCod', //\tNM_198053.2:c.462C>T\tNucleotide HGVS\n            'hgvsProt', //\tNP_932170.1:p.Asp154=\tProtein HGVS\n            'numSubmit', //\t1\tNumber of submitters\n            'lastEval', //\tDec 19,2017\tLast evaluation\n            'guidelines', //\t\tGuidelines\n            'otherIds'\n        ]\n    }\n}\n\nexport default FileFormats","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {FileUtils, GoogleAuth, GoogleDrive, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport {DOMUtils} from \"../../node_modules/igv-ui/dist/igv-ui.js\"\n\nconst extend = function (parent, child) {\n\n    child.prototype = Object.create(parent.prototype)\n    child.prototype.constructor = child\n    child.prototype._super = Object.getPrototypeOf(child.prototype)\n    return child\n}\n\n/**\n * Test if the given value is a string or number.  Not using typeof as it fails on boxed primitives.\n *\n * @param value\n * @returns boolean\n */\n\nfunction isSimpleType(value) {\n    const simpleTypes = new Set([\"boolean\", \"number\", \"string\", \"symbol\"])\n    const valueType = typeof value\n    return (value !== undefined && (simpleTypes.has(valueType) || value.substring || value.toFixed))\n}\n\nfunction buildOptions(config, options) {\n\n    var defaultOptions = {\n        oauthToken: config.oauthToken,\n        headers: config.headers,\n        withCredentials: config.withCredentials,\n        filename: config.filename\n    }\n\n    return Object.assign(defaultOptions, options)\n}\n\n/**\n * isMobile test from http://detectmobilebrowsers.com\n * TODO -- improve UI design so this isn't neccessary\n * @returns {boolean}\n */\n\n// igv.isMobile = function () {\n//\n//     const a = (navigator.userAgent || navigator.vendor || window.opera);\n//     return (/(android|bb\\d+|meego).+mobile|avantgo|bada\\/|blackberry|blazer|compal|elaine|fennec|hiptop|iemobile|ip(hone|od)|iris|kindle|lge |maemo|midp|mmp|mobile.+firefox|netfront|opera m(ob|in)i|palm( os)?|phone|p(ixi|re)\\/|plucker|pocket|psp|series(4|6)0|symbian|treo|up\\.(browser|link)|vodafone|wap|windows ce|xda|xiino/i.test(a) ||\n//         /1207|6310|6590|3gso|4thp|50[1-6]i|770s|802s|a wa|abac|ac(er|oo|s\\-)|ai(ko|rn)|al(av|ca|co)|amoi|an(ex|ny|yw)|aptu|ar(ch|go)|as(te|us)|attw|au(di|\\-m|r |s )|avan|be(ck|ll|nq)|bi(lb|rd)|bl(ac|az)|br(e|v)w|bumb|bw\\-(n|u)|c55\\/|capi|ccwa|cdm\\-|cell|chtm|cldc|cmd\\-|co(mp|nd)|craw|da(it|ll|ng)|dbte|dc\\-s|devi|dica|dmob|do(c|p)o|ds(12|\\-d)|el(49|ai)|em(l2|ul)|er(ic|k0)|esl8|ez([4-7]0|os|wa|ze)|fetc|fly(\\-|_)|g1 u|g560|gene|gf\\-5|g\\-mo|go(\\.w|od)|gr(ad|un)|haie|hcit|hd\\-(m|p|t)|hei\\-|hi(pt|ta)|hp( i|ip)|hs\\-c|ht(c(\\-| |_|a|g|p|s|t)|tp)|hu(aw|tc)|i\\-(20|go|ma)|i230|iac( |\\-|\\/)|ibro|idea|ig01|ikom|im1k|inno|ipaq|iris|ja(t|v)a|jbro|jemu|jigs|kddi|keji|kgt( |\\/)|klon|kpt |kwc\\-|kyo(c|k)|le(no|xi)|lg( g|\\/(k|l|u)|50|54|\\-[a-w])|libw|lynx|m1\\-w|m3ga|m50\\/|ma(te|ui|xo)|mc(01|21|ca)|m\\-cr|me(rc|ri)|mi(o8|oa|ts)|mmef|mo(01|02|bi|de|do|t(\\-| |o|v)|zz)|mt(50|p1|v )|mwbp|mywa|n10[0-2]|n20[2-3]|n30(0|2)|n50(0|2|5)|n7(0(0|1)|10)|ne((c|m)\\-|on|tf|wf|wg|wt)|nok(6|i)|nzph|o2im|op(ti|wv)|oran|owg1|p800|pan(a|d|t)|pdxg|pg(13|\\-([1-8]|c))|phil|pire|pl(ay|uc)|pn\\-2|po(ck|rt|se)|prox|psio|pt\\-g|qa\\-a|qc(07|12|21|32|60|\\-[2-7]|i\\-)|qtek|r380|r600|raks|rim9|ro(ve|zo)|s55\\/|sa(ge|ma|mm|ms|ny|va)|sc(01|h\\-|oo|p\\-)|sdk\\/|se(c(\\-|0|1)|47|mc|nd|ri)|sgh\\-|shar|sie(\\-|m)|sk\\-0|sl(45|id)|sm(al|ar|b3|it|t5)|so(ft|ny)|sp(01|h\\-|v\\-|v )|sy(01|mb)|t2(18|50)|t6(00|10|18)|ta(gt|lk)|tcl\\-|tdg\\-|tel(i|m)|tim\\-|t\\-mo|to(pl|sh)|ts(70|m\\-|m3|m5)|tx\\-9|up(\\.b|g1|si)|utst|v400|v750|veri|vi(rg|te)|vk(40|5[0-3]|\\-v)|vm40|voda|vulc|vx(52|53|60|61|70|80|81|83|85|98)|w3c(\\-| )|webc|whit|wi(g |nc|nw)|wmlb|wonu|x700|yas\\-|your|zeto|zte\\-/i.test(a.substr(0, 4)))\n//\n// }\n\nconst doAutoscale = function (features) {\n    var min, max\n\n    if (features && features.length > 0) {\n        min = Number.MAX_VALUE\n        max = -Number.MAX_VALUE\n\n        for(let f of features) {\n            if (!Number.isNaN(f.value)) {\n                min = Math.min(min, f.value)\n                max = Math.max(max, f.value)\n            }\n        }\n\n        // Insure we have a zero baseline\n        if (max > 0) min = Math.min(0, min)\n        if (max < 0) max = 0\n    } else {\n        // No features -- default\n        min = 0\n        max = 100\n    }\n\n    return {min: min, max: max}\n}\n\nconst validateGenomicExtent = function (chromosomeLengthBP, genomicExtent, minimumBP) {\n\n    let ss = genomicExtent.start\n    let ee = genomicExtent.end\n\n    if (undefined === ee) {\n\n        ss -= minimumBP / 2\n        ee = ss + minimumBP\n\n        if (ee > chromosomeLengthBP) {\n            ee = chromosomeLengthBP\n            ss = ee - minimumBP\n        } else if (ss < 0) {\n            ss = 0\n            ee = minimumBP\n        }\n\n    } else if (ee - ss < minimumBP) {\n\n        const center = (ee + ss) / 2\n\n        if (center - minimumBP / 2 < 0) {\n            ss = 0\n            ee = ss + minimumBP\n        } else if (center + minimumBP / 2 > chromosomeLengthBP) {\n            ee = chromosomeLengthBP\n            ss = ee - minimumBP\n        } else {\n            ss = center - minimumBP / 2\n            ee = ss + minimumBP\n        }\n    }\n\n    genomicExtent.start = Math.ceil(ss)\n    genomicExtent.end = Math.floor(ee)\n}\n\n/*!\n * is-number <https://github.com/jonschlinkert/is-number>\n *\n * Copyright (c) 2014-present, Jon Schlinkert.\n * Released under the MIT License.\n */\n\nconst isNumber = function (num) {\n    if (typeof num === 'number') {\n        return num - num === 0\n    }\n    if (typeof num === 'string' && num.trim() !== '') {\n        return Number.isFinite ? Number.isFinite(+num) : isFinite(+num)\n    }\n    return false\n}\n\nasync function getFilename(url) {\n    if (StringUtils.isString(url) && url.startsWith(\"https://drive.google.com\")) {\n        // This will fail if Google API key is not defined\n        if (GoogleAuth.getApiKey() === undefined) {\n            throw Error(\"Google drive is referenced, but API key is not defined.  An API key is required for Google Drive access\")\n        }\n        const json = await GoogleDrive.getDriveFileInfo(url)\n        return json.originalFileName || json.name\n    } else {\n        return FileUtils.getFilename(url)\n    }\n}\n\nfunction prettyBasePairNumber(raw) {\n\n    var denom,\n        units,\n        value,\n        floored\n\n    if (raw > 1e7) {\n        denom = 1e6\n        units = \" mb\"\n    } else if (raw > 1e4) {\n\n        denom = 1e3\n        units = \" kb\"\n\n        value = raw / denom\n        floored = Math.floor(value)\n        return StringUtils.numberFormatter(floored) + units\n    } else {\n        return StringUtils.numberFormatter(raw) + \" bp\"\n    }\n\n    value = raw / denom\n    floored = Math.floor(value)\n\n    return floored.toString() + units\n}\n\n\nfunction isDataURL(obj) {\n    return (StringUtils.isString(obj) && obj.startsWith(\"data:\"))\n}\n\nfunction createColumn(columnContainer, className) {\n    const column = DOMUtils.div({class: className})\n    columnContainer.appendChild(column)\n}\n\n\nfunction insertElementBefore(element, referenceNode) {\n    referenceNode.parentNode.insertBefore(element, referenceNode)\n}\n\nfunction insertElementAfter(element, referenceNode) {\n    referenceNode.parentNode.insertBefore(element, referenceNode.nextSibling)\n}\n\n/**\n * Test to see if page is loaded in a secure context, that is by https or is localhost.\n */\nfunction isSecureContext() {\n    return window.location.protocol === \"https:\" || window.location.hostname === \"localhost\"\n}\n\n// reference: https://pretagteam.com/question/find-element-height-including-margin\nfunction getElementAbsoluteHeight(element) {\n\n    // Get the DOM Node if you pass in a string\n    element = (typeof element === 'string') ? document.querySelector(element) : element\n\n    const styles = window.getComputedStyle(element)\n    const margin = parseFloat(styles['marginTop']) + parseFloat(styles['marginBottom'])\n    const height = element.offsetHeight\n\n    return Math.ceil(margin + height);\n}\n\nexport {\n    createColumn, extend, isSimpleType, buildOptions, validateGenomicExtent, doAutoscale, isNumber,\n    getFilename, prettyBasePairNumber, isDataURL, insertElementBefore, insertElementAfter, isSecureContext,\n    getElementAbsoluteHeight\n}\n","import {IGVColor} from \"../../../node_modules/igv-utils/src/index.js\"\nimport {isNumber} from \"../../util/igvUtils.js\"\n\n/**\n * Decoder for bedpe records.\n *\n * Bedpe format was created by Aaron Quinlan et al as part of the bedtools project.\n * The spec is here:  https://bedtools.readthedocs.io/en/latest/content/general-usage.html,\n *\n * 1      2      3    4      5      6    7    8     9       10      11-\n * chrom1 start1 end1 chrom2 start2 end2 name score strand1 strand2 <Any number of additional, user-defined fields>\n *\n * However there are off spec variants, an important one being a 7 column format with score in place of the standard\n * name column.\n *\n * A common variant is a \"hiccups\" output file, which is standard bedpe with the exception of a header line\n * of the form\n *\n * chr1    x1    x2    chr2    y1    y2    name    score    strand1    strand2    color    observed    expectedBL    expectedDonut    expectedH    expectedV    fdrBL    fdrDonut    fdrH    fdrV\n *\n * The \"hiccups\" output is apparently not standardized as this is found at ENCODE, with a non-helpful \"tsv\" extension\n *\n * chr1    x1    x2    chr2    y1    y2    color    observed    expectedBL    expectedDonut    expectedH    expectedV    fdrBL    fdrDonut    fdrH    fdrV    numCollapsed    centroid1    centroid2    radius\n * chr9    136790000    136795000    chr9    136990000    136995000    0,255,255    101.0    31.100368    38.40316    56.948116    34.040756    1.1876738E-13    1.05936405E-13    2.5148233E-4    1.7220993E-13    1    136792500    136992500    25590\n *\n * The \"hiccups\" documentation specfies yet another set of column headers\n * chromosome1    x1    x2    chromosome2    y1    y2    color    observed expected_bottom_left    expected_donut    expected_horizontal    expected_vertical fdr_bottom_left    fdr_donut    fdr_horizontal    fdr_vertical number_collapsed    centroid1    centroid2    radius\n *\n * @param tokens\n * @param ignore\n * @returns {{start1: number, end2: number, end1: number, chr1: *, chr2: *, start2: number}|undefined}\n */\n\nfunction decodeBedpe(tokens, header) {\n\n    if (tokens.length < 6) {\n        console.log(\"Skipping line: \" + tokens.join(' '))\n        return undefined\n    }\n\n    var feature = {\n        chr1: tokens[0],\n        start1: Number.parseInt(tokens[1]),\n        end1: Number.parseInt(tokens[2]),\n        chr2: tokens[3],\n        start2: Number.parseInt(tokens[4]),\n        end2: Number.parseInt(tokens[5])\n    }\n\n    if (isNaN(feature.start1) || isNaN(feature.end1) || isNaN(feature.start2) || isNaN(feature.end2)) {\n        //throw Error(`Error parsing line: ${tokens.join('\\t')}`);\n        return undefined\n    }\n\n    // Determine if this is a \"hiccups\" file.  Store result on \"header\" so it doesn't need repeated for every feature\n    if(header && header.hiccups === undefined) {\n        header.hiccups = header.columnNames ? isHiccups(header.columnNames) : false\n    }\n    const hiccups = header && header.hiccups\n    const stdColumns = hiccups ? 6 : 10\n\n    if(!hiccups) {\n        if (tokens.length > 6 && tokens[6] !== \".\") {\n            feature.name = tokens[6]\n        }\n\n        if (tokens.length > 7 && tokens[7] !== \".\") {\n            feature.score = Number(tokens[7])\n        }\n\n        if (tokens.length > 8 && tokens[8] !== \".\") {\n            feature.strand1 = tokens[8]\n        }\n\n        if (tokens.length > 9 && tokens[9] !== \".\") {\n            feature.strand2 = tokens[9]\n        }\n    }\n\n    // Optional extra columns\n    if (header) {\n        const colorColumn = header.colorColumn\n        if (colorColumn && colorColumn < tokens.length) {\n            feature.color = IGVColor.createColorString(tokens[colorColumn])\n        }\n        const thicknessColumn = header.thicknessColumn\n        if (thicknessColumn && thicknessColumn < tokens.length) {\n            feature.thickness = tokens[thicknessColumn]\n        }\n\n        if (tokens.length > stdColumns && header.columnNames && header.columnNames.length === tokens.length) {\n            feature.extras = tokens.slice(stdColumns)\n        }\n    }\n\n\n    // Set total extent of feature\n    if (feature.chr1 === feature.chr2) {\n        feature.chr = feature.chr1\n        feature.start = Math.min(feature.start1, feature.start2)\n        feature.end = Math.max(feature.end1, feature.end2)\n\n    }\n    return feature\n}\n\n/**\n * Hack for non-standard bedPE formats, where numeric score can be in column 7 (name field from spec)\n * @param features\n */\nfunction fixBedPE(features) {\n\n    if (features.length == 0) return\n\n    // Assume all features have same properties\n    const firstFeature = features[0]\n    if (firstFeature.score === undefined && firstFeature.name !== undefined) {\n        // Name field (col 7) is sometimes used for score.\n        for (let f of features) {\n            if (!(isNumber(f.name) || f.name === '.')) return\n        }\n        for (let f of features) {\n            f.score = Number(f.name)\n            delete f.name\n        }\n    }\n\n    // Make copies of inter-chr features, one for each chromosome\n    const interChrFeatures = features.filter(f => f.chr1 !== f.chr2)\n    for (let f1 of interChrFeatures) {\n        const f2 = Object.assign({}, f1)\n        f2.dup = true\n        features.push(f2)\n\n        f1.chr = f1.chr1\n        f1.start = f1.start1\n        f1.end = f1.end1\n\n        f2.chr = f2.chr2\n        f2.start = f2.start2\n        f2.end = f2.end2\n    }\n}\n\n\n/**\n * Special decoder for Hic Domain files.   In these files feature1 == feature2, they are really bed records.\n * @param tokens\n * @param ignore\n * @returns {*}\n */\nfunction decodeBedpeDomain(tokens, header) {\n\n    if (tokens.length < 8) return undefined\n\n    return {\n        chr: tokens[0],\n        start: Number.parseInt(tokens[1]),\n        end: Number.parseInt(tokens[2]),\n        color: IGVColor.createColorString(tokens[6]),\n        value: Number(tokens[7])\n    }\n}\n\nfunction isHiccups(columns) {\n    return columns && (columns.includes(\"fdrDonut\") || columns.includes(\"fdr_donut\"))\n}\n\n\nexport {decodeBedpe, decodeBedpeDomain, fixBedPE, isHiccups}","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {igvxhr, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport FileFormats from \"./fileFormats.js\"\nimport {isHiccups} from \"../feature/decode/bedpe.js\"\nimport {buildOptions} from \"./igvUtils.js\"\n\nconst knownFileExtensions = new Set([\n\n    \"narrowpeak\",\n    \"broadpeak\",\n    \"regionpeak\",\n    \"peaks\",\n    \"bedgraph\",\n    \"wig\",\n    \"gff3\",\n    \"gff\",\n    \"gtf\",\n    \"fusionjuncspan\",\n    \"refflat\",\n    \"seg\",\n    \"aed\",\n    \"bed\",\n    \"vcf\",\n    \"bb\",\n    \"bigbed\",\n    \"biginteract\",\n    \"biggenepred\",\n    \"bignarrowpeak\",\n    \"bw\",\n    \"bigwig\",\n    \"bam\",\n    \"tdf\",\n    \"refgene\",\n    \"genepred\",\n    \"genepredext\",\n    \"bedpe\",\n    \"bp\",\n    \"snp\",\n    \"rmsk\",\n    \"cram\",\n    \"gwas\",\n    \"maf\",\n    \"mut\",\n    \"tsv\",\n    \"hiccups\",\n    \"fasta\",\n    \"fa\",\n    \"fna\",\n    \"pytor\"\n])\n\n/**\n * Return a custom format object with the given name.\n * @param name\n * @returns {*}\n */\nfunction getFormat(name) {\n\n    if (FileFormats && FileFormats[name]) {\n        return expandFormat(FileFormats[name])\n    } else {\n        return undefined\n    }\n\n    function expandFormat(format) {\n\n        const fields = format.fields\n        const keys = ['chr', 'start', 'end']\n\n        for (let i = 0; i < fields.length; i++) {\n            for (let key of keys) {\n                if (key === fields[i]) {\n                    format[key] = i\n                }\n            }\n        }\n\n        return format\n    }\n}\n\nfunction inferFileFormat(fn) {\n\n    var idx, ext\n\n    fn = fn.toLowerCase()\n\n    // Special case -- UCSC refgene files\n    if (fn.endsWith(\"refgene.txt.gz\") ||\n        fn.endsWith(\"refgene.txt.bgz\") ||\n        fn.endsWith(\"refgene.txt\") ||\n        fn.endsWith(\"refgene.sorted.txt.gz\") ||\n        fn.endsWith(\"refgene.sorted.txt.bgz\")) {\n        return \"refgene\"\n    }\n\n\n    //Strip parameters -- handle local files later\n    idx = fn.indexOf(\"?\")\n    if (idx > 0) {\n        fn = fn.substr(0, idx)\n    }\n\n    //Strip aux extensions .gz, .tab, and .txt\n    if (fn.endsWith(\".gz\")) {\n        fn = fn.substr(0, fn.length - 3)\n    }\n\n    if (fn.endsWith(\".txt\") || fn.endsWith(\".tab\") || fn.endsWith(\".bgz\")) {\n        fn = fn.substr(0, fn.length - 4)\n    }\n\n\n    idx = fn.lastIndexOf(\".\")\n    ext = idx < 0 ? fn : fn.substr(idx + 1)\n\n    switch (ext) {\n        case \"bw\":\n            return \"bigwig\"\n        case \"bb\":\n            return \"bigbed\"\n        case \"fasta\":\n        case \"fa\":\n        case \"fna\":\n            return \"fasta\"\n        default:\n            if (knownFileExtensions.has(ext)) {\n                return ext\n            } else {\n                return undefined\n            }\n\n    }\n\n}\n\nfunction inferIndexPath(url, extension) {\n\n    if (StringUtils.isString(url)) {\n        if (url.includes(\"?\")) {\n            const idx = url.indexOf(\"?\")\n            return url.substring(0, idx) + \".\" + extension + url.substring(idx)\n        } else {\n            return url + \".\" + extension\n        }\n    } else {\n        return undefined\n    }\n}\n\n\nfunction inferTrackType(config) {\n\n    translateDeprecatedTypes(config)\n\n    if (config.type) {\n        return config.type\n    }\n\n    if (config.format) {\n        const format = config.format.toLowerCase()\n        switch (format) {\n            case \"bw\":\n            case \"bigwig\":\n            case \"wig\":\n            case \"bedgraph\":\n            case \"tdf\":\n                return \"wig\"\n            case \"vcf\":\n                return \"variant\"\n            case \"seg\":\n                return \"seg\"\n            case \"mut\":\n            case \"maf\":\n                return \"mut\"\n            case \"bam\":\n            case \"cram\":\n                return \"alignment\"\n            case \"hiccups\":\n            case \"bedpe\":\n            case \"bedpe-loop\":\n            case \"biginteract\":\n                return \"interact\"\n            case \"bp\":\n                return \"arc\"\n            case \"gwas\":\n                return \"gwas\"\n            case \"bed\":\n            case \"bigbed\":\n            case \"bb\":\n            case \"biggenepred\":\n            case \"bignarrowpeak\":\n                return \"bedtype\"\n            case \"fasta\":\n                return \"sequence\"\n            case \"pytor\":\n                return \"cnvpytor\"\n            default:\n                return \"annotation\"\n        }\n    }\n}\n\nfunction translateDeprecatedTypes(config) {\n\n    if (config.featureType) {  // Translate deprecated \"feature\" type\n        config.type = config.type || config.featureType\n        config.featureType = undefined\n    }\n    if (\"junctions\" === config.type) {\n        config.type = \"junction\"\n    } else if (\"bed\" === config.type) {\n        config.type = \"annotation\"\n        config.format = config.format || \"bed\"\n    } else if (\"annotations\" === config.type) {\n        config.type = \"annotation\"\n    } else if (\"alignments\" === config.type) {\n        config.type = \"alignment\"\n    } else if (\"bam\" === config.type) {\n        config.type = \"alignment\"\n        config.format = \"bam\"\n    } else if (\"vcf\" === config.type) {\n        config.type = \"variant\"\n        config.format = \"vcf\"\n    } else if (\"t2d\" === config.type) {\n        config.type = \"gwas\"\n    } else if (\"FusionJuncSpan\" === config.type && !config.format) {\n        config.format = \"fusionjuncspan\"\n    } else if (\"aed\" === config.type) {\n        config.type = \"annotation\"\n        config.format = config.format || \"aed\"\n    }\n}\n\n/**\n * Attempt to infer the file format by reading a few lines from the header.  Currently this only supports \"tsv\" extensions,\n * it was added specifically for \"hiccups\" type tsv files in ENCODE.  Might be expanded in the future.\n *\n * @param url\n * @returns {Promise<void>}\n */\nasync function inferFileFormatFromHeader(config) {\n\n    if (config.url) {\n        const firstBytes = await igvxhr.loadString(config.url, buildOptions(config, {range: {start: 0, size: 1000}}))\n        if(firstBytes) {\n            const columnNames = firstBytes.split('\\n')[0].split('\\t')\n            if(isHiccups(columnNames)) {\n                return \"hiccups\"\n            }\n        }\n    }\n\n    return undefined\n\n}\n\nfunction registerFileFormats(name, fields) {\n    FileFormats[name] = {fields: fields}\n}\n\n\nexport {knownFileExtensions, getFormat, inferFileFormat, inferFileFormatFromHeader, inferTrackType, inferIndexPath, registerFileFormats}\n","const pairs =\n    [\n        ['A', 'T'],\n        ['G', 'C'],\n        ['Y', 'R'],\n        ['W', 'S'],\n        ['K', 'M'],\n        ['D', 'H'],\n        ['B', 'V']\n    ]\n\nconst complements = new Map()\nfor (let p of pairs) {\n    const p1 = p[0]\n    const p2 = p[1]\n    complements.set(p1, p2)\n    complements.set(p2, p1)\n    complements.set(p1.toLowerCase(), p2.toLowerCase())\n    complements.set(p2.toLowerCase(), p1.toLowerCase())\n}\n\nfunction complementBase(base) {\n    return complements.has(base) ? complements.get(base) : base\n}\n\nfunction complementSequence(sequence) {\n    let comp = ''\n    for (let base of sequence) {\n        comp += complements.has(base) ? complements.get(base) : base\n    }\n    return comp\n}\n\nfunction reverseComplementSequence(sequence) {\n\n    let comp = ''\n    let idx = sequence.length\n    while (idx-- > 0) {\n        const base = sequence[idx]\n        comp += complements.has(base) ? complements.get(base) : base\n    }\n    return comp\n}\n\nexport {complementBase, complementSequence, reverseComplementSequence}\n\n","class Chromosome {\n    constructor(name, order, bpLength) {\n        this.name = name\n        this.order = order\n        this.bpLength = bpLength\n    }\n}\n\nexport default Chromosome","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n// Indexed fasta files\nimport {BGZip, igvxhr, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport Chromosome from \"./chromosome.js\"\nimport {buildOptions, isDataURL} from \"../util/igvUtils.js\"\n\nconst splitLines = StringUtils.splitLines\n\nconst reservedProperties = new Set(['fastaURL', 'indexURL', 'cytobandURL', 'indexed'])\n\nclass NonIndexedFasta {\n\n\n    constructor(reference) {\n\n        this.fastaURL = reference.fastaURL\n        this.withCredentials = reference.withCredentials\n        this.chromosomeNames = []\n        this.chromosomes = {}\n        this.sequences = new Map()\n\n        // Build a track-like config object from the referenceObject\n        const config = {}\n        for (let key in reference) {\n            if (reference.hasOwnProperty(key) && !reservedProperties.has(key)) {\n                config[key] = reference[key]\n            }\n        }\n        this.config = config\n    }\n\n\n    async init() {\n        return this.loadAll()\n    }\n\n    async getSequence(chr, start, end) {\n\n        if (!this.sequences.has(chr)) {\n            return undefined\n        }\n\n        let seqSlice = this.sequences.get(chr).find(ss => ss.contains(start, end))\n        if (!seqSlice) {\n            seqSlice = this.sequences.get(chr).find(ss => ss.overlaps(start, end))\n            if (!seqSlice) {\n                return undefined\n            }\n        }\n\n        start -= seqSlice.offset\n        end -= seqSlice.offset\n\n        let prefix = \"\"\n        if (start < 0) {\n            for (let i = start; i < Math.min(end, 0); i++) {\n                prefix += \"*\"\n            }\n        }\n\n        if (end <= 0) {\n            return Promise.resolve(prefix)\n        }\n\n        const seq = seqSlice.sequence\n        const seqEnd = Math.min(end, seq.length)\n        return prefix + seq.substring(start, seqEnd)\n    }\n\n    async loadAll() {\n\n        let data\n        if (isDataURL(this.fastaURL)) {\n            let bytes = BGZip.decodeDataURI(this.fastaURL)\n            data = \"\"\n            for (let b of bytes) {\n                data += String.fromCharCode(b)\n            }\n        } else {\n            data = await igvxhr.load(this.fastaURL, buildOptions(this.config))\n        }\n\n        const chrNameSet = new Set()\n        const lines = splitLines(data)\n        const len = lines.length\n        let lineNo = 0\n        let order = 0\n        let nextLine\n        let current = {}\n        while (lineNo < len) {\n            nextLine = lines[lineNo++].trim()\n            if (nextLine.startsWith(\"#\") || nextLine.length === 0) {\n                // skip\n            } else if (nextLine.startsWith(\">\")) {\n                // Start the next sequence\n                if(current && current.seq) {\n                    pushChromosome.call(this, current, order++)\n                }\n\n                const parts = nextLine.substr(1).split(/\\s+/)\n\n                // Check for samtools style locus string.   This is not perfect, and could fail on weird sequence names\n                const nameParts = parts[0].split(':')\n                current.chr = nameParts[0]\n                current.seq = \"\"\n                current.offset = 0\n                if (nameParts.length > 1 && nameParts[1].indexOf('-') > 0) {\n                    const locusParts = nameParts[1].split('-')\n                    if (locusParts.length === 2 &&\n                        /^[0-9]+$/.test(locusParts[0]) &&\n                        /^[0-9]+$/.test(locusParts[1])) {\n                    }\n                    const from = Number.parseInt(locusParts[0])\n                    const to = Number.parseInt(locusParts[1])\n                    if (to > from) {   // TODO this should be an error\n                        current.offset = from - 1\n                    }\n\n                    // Check for chromosome length token\n                    if (parts.length > 1 && parts[1].startsWith(\"@len=\")) {\n                        try {\n                            current.length = parseInt(parts[1].trim().substring(5))\n                        } catch (e) {\n                            current.length = undefined\n                            console.error(`Error parsing sequence length for ${nextLine}`)\n                        }\n                    } else {\n                        current.length = undefined\n                    }\n                }\n            } else {\n                current.seq += nextLine\n            }\n            // add last seq\n            if (current && current.seq) {\n                pushChromosome.call(this, current, order)\n            }\n        }\n\n        function pushChromosome(current, order) {\n            const length = current.length || (current.offset + current.seq.length)\n            if (!chrNameSet.has(current.chr)) {\n                this.chromosomeNames.push(current.chr)\n                this.sequences.set(current.chr, [])\n                this.chromosomes[current.chr] = new Chromosome(current.chr, order, length)\n                chrNameSet.add(current.chr)\n            } else {\n                const c = this.chromosomes[current.chr]\n                c.bpLength = Math.max(c.bpLength, length)\n            }\n            this.sequences.get(current.chr).push(new SequenceSlice(current.offset, current.seq))\n        }\n    }\n}\n\nclass SequenceSlice {\n\n    constructor(offset, sequence) {\n        this.offset = offset\n        this.sequence = sequence\n    }\n\n    contains(start, end) {\n        return this.offset <= start && this.end >= end\n    }\n\n    overlaps(start, end) {\n        return this.offset < end && this.end > start\n    }\n\n    get end() {\n        return this.offset + this.sequence.length\n    }\n\n}\n\n\nexport default NonIndexedFasta\n","const GenomicInterval = function (chr, start, end, features) {\n    this.chr = chr\n    this.start = start\n    this.end = end\n    this.features = features\n}\n\nGenomicInterval.prototype.contains = function (chr, start, end) {\n    return this.chr === chr &&\n        this.start <= start &&\n        this.end >= end\n}\n\nGenomicInterval.prototype.containsRange = function (range) {\n    return this.chr === range.chr &&\n        this.start <= range.start &&\n        this.end >= range.end\n}\n\nexport default GenomicInterval","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n// Indexed fasta files\nimport {BGZip, igvxhr, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport GenomicInterval from \"./genomicInterval.js\"\nimport Chromosome from \"./chromosome.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\n\nconst splitLines = StringUtils.splitLines\n\nconst reservedProperties = new Set(['fastaURL', 'indexURL', 'compressedIndexURL', 'cytobandURL', 'indexed'])\n\nclass FastaSequence {\n\n    constructor(reference) {\n\n        this.file = reference.fastaURL\n        this.indexFile = reference.indexURL || reference.indexFile || this.file + \".fai\"\n        this.compressedIndexFile = reference.compressedIndexURL || false\n        this.withCredentials = reference.withCredentials\n        this.chromosomeNames = []\n        this.chromosomes = {}\n        this.sequences = {}\n        this.offsets = {}\n\n        // Build a track-like config object from the referenceObject\n        const config = {}\n        for (let key in reference) {\n            if (reference.hasOwnProperty(key) && !reservedProperties.has(key)) {\n                config[key] = reference[key]\n            }\n        }\n        this.config = config\n    }\n\n\n    async init() {\n        return this.getIndex()\n    }\n\n    async getSequence(chr, start, end) {\n\n        const hasCachedSquence = this.interval && this.interval.contains(chr, start, end)\n\n        if (!hasCachedSquence) {\n\n            // Expand query, to minimum of 50kb\n            let qstart = start\n            let qend = end\n            if ((end - start) < 50000) {\n                const w = (end - start)\n                const center = Math.round(start + w / 2)\n                qstart = Math.max(0, center - 25000)\n                qend = center + 25000\n            }\n\n            const seqBytes = await this.readSequence(chr, qstart, qend)\n            this.interval = new GenomicInterval(chr, qstart, qend, seqBytes)\n        }\n\n        const offset = start - this.interval.start\n        const n = end - start\n        const seq = this.interval.features ? this.interval.features.substr(offset, n) : null\n        return seq\n    }\n\n    async getIndex() {\n\n        if (this.index) {\n            return this.index\n        } else {\n            const data = await igvxhr.load(this.indexFile, buildOptions(this.config))\n            const lines = splitLines(data)\n            const len = lines.length\n            let lineNo = 0\n            let order = 0\n            this.index = {}\n\n            while (lineNo < len) {\n                const tokens = lines[lineNo++].split(\"\\t\")\n                const nTokens = tokens.length\n\n                if (nTokens === 5) {\n                    // Parse the index line.\n                    const chr = tokens[0]\n                    const size = parseInt(tokens[1])\n                    const position = parseInt(tokens[2])\n                    const basesPerLine = parseInt(tokens[3])\n                    const bytesPerLine = parseInt(tokens[4])\n\n                    const indexEntry = {\n                        size: size,\n                        position: position,\n                        basesPerLine: basesPerLine,\n                        bytesPerLine: bytesPerLine\n                    }\n\n                    this.chromosomeNames.push(chr)\n                    this.index[chr] = indexEntry\n                    this.chromosomes[chr] = new Chromosome(chr, order++, size)\n                }\n            }\n            return this.index\n        }\n    }\n\n\n    //Code is losely based on https://github.com/GMOD/bgzf-filehandle\n    //Reworked however in orde to work with the igvxhr interface for loading files\n    //Additionally, replaced calls to the Long.js interface with standard JS calls for ArrayBuffers and the associated views\n    //\n    //The compressed index is an array of blocks, with each block being a pair: compressed-position & uncompressed-position (both in bytes)\n    async getCompressedIndex() {\n        const GZI_NUM_BYTES_OFFSET = 8\n        const GZI_NUM_BYTES_BLOCK = 8\n        if (this.compressedIndex) {\n            return this.compressedIndex\n        }\n        if (!this.compressedIndexFile) {\n            this.compressedIndex = []\n            return this.compressedIndex\n        }\n        //In contrast to the 'normal' reference (for which the index is chromosome based), this index is block-based\n        //As such there is not need to make it a hash. An array is sufficient.\n        this.compressedIndex = []\n        const gziData = await igvxhr.loadArrayBuffer(this.compressedIndexFile, buildOptions(this.config))\n        const givenFileSize = gziData.byteLength\n        if (givenFileSize < GZI_NUM_BYTES_OFFSET) {\n            console.log(\"Cannot parse GZI index file: length (\" + givenFileSize + \" bytes) is insufficient to determine content of index.\")\n            return this.compressedIndex\n        }\n        //First 8 bytes are a little endian unsigned bigint (64bit), indicating the number of blocks in the index.\n        const numBlocksBuffer = gziData.slice(0, GZI_NUM_BYTES_OFFSET)\n        const numBlocks = Number((new DataView(numBlocksBuffer)).getBigUint64(0, true))\n        //The remainder of the gzi content are pairs of little endian unsigned bigint (64bit) numbers.\n        //The first of the pair is the compressed position of a block\n        //The second of the pair is the uncompressed position of a block\n\n        //Sanity check:\n        //Is the size of the array-buffer (of the entire file) correct with regards to the number of blocks detailled by the first 8 bytes of the file?\n        //Total file-size should be:\n        // 8 + 2*(num_entries*8) bytes, with the first 8 bytes indicating the number of entries\n        const expectedFileSize = GZI_NUM_BYTES_OFFSET + numBlocks * 2 * GZI_NUM_BYTES_BLOCK\n        if (givenFileSize != expectedFileSize) {\n            console.log(\"Incorrect file size of reference genome index. Expected : \" + expectedFileSize + \". Received : \" + givenFileSize)\n            return this.compressedIndex\n        }\n\n        //Push the first block to the index: the first block always has positions 0 for both the compressed and uncompressed file\n        this.compressedIndex.push([0, 0])\n\n        //Further process all the blocks of the GZI index, and keep them in memory\n        for (let blockNumber = 0; blockNumber < numBlocks; blockNumber++) {\n            const bufferBlockStart = GZI_NUM_BYTES_OFFSET + blockNumber * 2 * GZI_NUM_BYTES_BLOCK\n            const bufferBlockEnd = GZI_NUM_BYTES_OFFSET + blockNumber * 2 * GZI_NUM_BYTES_BLOCK + 2 * GZI_NUM_BYTES_BLOCK\n            const bufferBlock = gziData.slice(bufferBlockStart, bufferBlockEnd)\n            const viewBlock = new DataView(bufferBlock)\n            const compressedPosition = Number(viewBlock.getBigUint64(0, true))  //First 8 bytes\n            const uncompressedPosition = Number(viewBlock.getBigUint64(GZI_NUM_BYTES_BLOCK, true)) //Last 8 bytes\n            this.compressedIndex.push([compressedPosition, uncompressedPosition])\n        }\n        return this.compressedIndex\n    }\n\n    //The Fasta-index gives a byte-position of the chromosomal sequences within the FASTA file.\n    //These locations need to be remapped to the locations within the zipped reference genome, using the GZI index\n    //This function provides this functionality by \n    //1) taking the indicated start/stop byte locations within the UNCOMPRESSED FASTA file\n    //2) remapping these byte locations to the correct blocks (and associated positions) within the COMPRESSED FASTA file\n    //Subsequently, the calling method can then extract the correct blocks from the compressed FASTA files and uncompressed the data\n    async getRelevantCompressedBlockNumbers(queryPositionStart, queryPositionEnd) {\n        const COMPRESSED_POSITION = 0\n        const UNCOMPRESSED_POSITION = 1\n        //Fallback for impossible values\n        if (queryPositionStart < 0 || queryPositionEnd < 0 || queryPositionEnd < queryPositionStart) {\n            console.log(\"Incompatible query positions for reference-genome. Start:\" + queryPositionStart + \" | End:\" + queryPositionEnd)\n            return []\n        }\n        //Ensure compressed index is loaded\n        await this.getCompressedIndex()\n        let result = []\n        //Now search for the correct block-numbers (going from 0 to length(compressed-index)) which overlap with the provided byte-positions\n        const lowestBlockNumber = 0\n        const highestBlockNumber = this.compressedIndex.length - 1\n        //Failsafe if for some reason the compressed index wasn't loaded or doesn't contain any data\n        if (this.compressedIndex.length == 0) {\n            console.log(\"Compressed index does not contain any content\")\n            return []\n        }\n        //Failsafe: if the queryPositionStart is greater than the uncompressed-position of the final block,\n        //then this final block is the only possible result\n        if (queryPositionStart > (this.compressedIndex)[highestBlockNumber][UNCOMPRESSED_POSITION]) {\n            return [highestBlockNumber]\n        }\n\n        //Rather than doing a linear search over all blocks, a binary search is done for speed considerations\n        //We are searching for the highest block number for which its position is smaller than the query start position\n        //Afterwards we will simply expand the blocks until the entire query range is covered\n        let searchLow = lowestBlockNumber\n        let searchHigh = highestBlockNumber\n        let searchPosition = Math.floor(this.compressedIndex.length / 2)\n        let maxIterations = this.compressedIndex.length + 1\n        let solutionFound = false\n        //instead of doing a while(true), this for-loop prevents eternal loops in case of issues\n        for (let iteration = 0; iteration < maxIterations; iteration++) {\n            const searchUncompressedPosition = (this.compressedIndex)[searchPosition][UNCOMPRESSED_POSITION]\n            const nextSearchUncompressedPosition = (searchPosition < (this.compressedIndex.length - 1)) ? (this.compressedIndex)[searchPosition + 1][UNCOMPRESSED_POSITION] : Infinity\n            //The query position lies within the current search block\n            if (searchUncompressedPosition <= queryPositionStart && nextSearchUncompressedPosition > queryPositionStart) {\n                solutionFound = true\n                break //searchPosition is the correct block number index\n            }\n            //Current block lies before the query position\n            else if (searchUncompressedPosition < queryPositionStart) {\n                searchLow = searchPosition + 1\n            }\n            //Current block lies after the query position\n            else {\n                searchHigh = searchPosition - 1\n            }\n            searchPosition = Math.ceil((searchHigh - searchLow) / 2) + searchLow\n        }\n        //If for some reason the binary search did not reveal a correct block index, then we return the empty result\n        if (!solutionFound) {\n            console.log(\"No blocks within compressed index found that correspond with query positions \" + queryPositionStart + \",\" + queryPositionEnd)\n            console.log(this.compressedIndex)\n            return []\n        }\n\n        //Now extend the result by adding additional blocks until the entire query range is covered\n        result.push(searchPosition)\n        for (let blockIndex = searchPosition + 1; blockIndex < this.compressedIndex.length; blockIndex++) {\n            result.push(blockIndex)\n            const blockUncompressedPosition = (this.compressedIndex)[blockIndex][UNCOMPRESSED_POSITION]\n            if (blockUncompressedPosition >= queryPositionEnd) {\n                break\n            }\n        }\n\n        //It is possible that the query end position lies AFTER the start of the final block\n        //If this is the case, we add a 'fake' negative index which will be interpreted by the loadAndUncompressBlocks method as an indicator\n        //to read until the end of the file \n        const finalRelevantBlock = result[result.length - 1]\n        const finalIndexBlock = this.compressedIndex.length - 1\n        if (finalRelevantBlock === finalIndexBlock && (this.compressedIndex)[finalRelevantBlock][UNCOMPRESSED_POSITION] < queryPositionEnd) {\n            result.push(-1)\n        }\n\n        return result\n    }\n\n\n    //Load the content from the blockIndices.\n    //This is done on a per-block basis\n    //Content of the first block will be trimmed in order to match the expected offset\n    async loadAndUncompressBlocks(blockIndices, startByte) {\n        const COMPRESSED_POSITION = 0\n        const UNCOMPRESSED_POSITION = 1\n        //Normally the compressed index should already exist, we're just makeing sure here\n        await this.getCompressedIndex()\n\n        if (blockIndices.length == 0) {\n            return \"\"\n        }\n\n        //Storing data in seperate array with indices in order to assert order due to async behaviour of loops\n        let resultCache = Array(blockIndices.length - 1)\n        for (let i = 0; i < blockIndices.length - 1; i++) {\n            const currentBlockNumber = blockIndices[i]\n            const currentBlockInfo = (this.compressedIndex)[currentBlockNumber]\n            const currentBlockCompressedPosition = currentBlockInfo[COMPRESSED_POSITION]\n\n            const nextBlockNumber = blockIndices[i + 1]\n            let compressedBytes = []\n            if (nextBlockNumber != -1) {  //default : read current entire block only\n                const nextBlockInfo = (this.compressedIndex)[nextBlockNumber]\n                const nextBlockCompressedPosition = nextBlockInfo[COMPRESSED_POSITION]\n                const compressedLength = nextBlockCompressedPosition - currentBlockCompressedPosition\n                compressedBytes = await igvxhr.loadArrayBuffer(this.file, buildOptions(this.config, {\n                    range: {\n                        start: currentBlockCompressedPosition,\n                        size: compressedLength\n                    }\n                }))\n            } else {   // special case for query within final block: read until the end of the file\n                compressedBytes = await igvxhr.loadArrayBuffer(this.file, buildOptions(this.config, {\n                    range: {\n                        start: currentBlockCompressedPosition\n                    }\n                }))\n            }\n            //now unzip the compressed bytes, and store them in the resultCache\n            const uncompressedBytes = await BGZip.unbgzf(compressedBytes)\n            resultCache[i] = uncompressedBytes\n        }\n\n        //Iterate over the result cache, create sequences from the data, and create a full sequence string from the data\n        let result = \"\"\n        for (let i = 0; i < resultCache.length; i++) {\n            for (let j = 0; j < resultCache[i].length; j++) {\n                const c = String.fromCharCode(resultCache[i][j])\n                result = result + c\n            }\n        }\n\n        //postprocess this data: because entire blocks are read we need to remove the first N bases of the first used block, \n        //which are not included in the original query positions\n        const firstBlockInfo = (this.compressedIndex)[blockIndices[0]]\n        const offset = startByte - firstBlockInfo[UNCOMPRESSED_POSITION]\n        result = result.substring(offset)\n\n        return result\n    }\n\n\n    async readSequence(chr, qstart, qend) {\n\n        await this.getIndex()\n        await this.getCompressedIndex() //This will work even if no compressed index file is set\n\n        const idxEntry = this.index[chr]\n        if (!idxEntry) {\n            console.log(\"No index entry for chr: \" + chr)\n            // Tag interval with null so we don't try again\n            this.interval = new GenomicInterval(chr, qstart, qend, null)\n            return null\n        }\n\n        const start = Math.max(0, qstart)    // qstart should never be < 0\n        const end = Math.min(idxEntry.size, qend)\n        const bytesPerLine = idxEntry.bytesPerLine\n        const basesPerLine = idxEntry.basesPerLine\n        const position = idxEntry.position\n        const nEndBytes = bytesPerLine - basesPerLine\n        const startLine = Math.floor(start / basesPerLine)\n        const endLine = Math.floor(end / basesPerLine)\n        const base0 = startLine * basesPerLine   // Base at beginning of start line\n        const offset = start - base0\n        const startByte = position + startLine * bytesPerLine + offset\n        const base1 = endLine * basesPerLine\n        const offset1 = end - base1\n        const endByte = position + endLine * bytesPerLine + offset1 - 1\n        const byteCount = endByte - startByte + 1\n\n        if (byteCount <= 0) {\n            console.error(\"No sequence for \" + chr + \":\" + qstart + \"-\" + qend)\n            return null\n        }\n\n        //If the compressed index file is set, then we are dealing with a compressed genome sequence\n        //The selection of startByte/endByte is done for the non-compressed genome sequence.\n        //These need to be 'converted' to the correct byte positions in the compressed genome sequence,\n        //by making use of the compressed index (GZI file)\n        let allBytes\n        if (!this.compressedIndexFile) {\n            allBytes = await igvxhr.load(this.file, buildOptions(this.config, {\n                range: {\n                    start: startByte,\n                    size: byteCount\n                }\n            }))\n        } else {\n            let relevantBlockIndices = await this.getRelevantCompressedBlockNumbers(startByte, endByte)\n            if (relevantBlockIndices.length === 0) {\n                console.log(\"No blocks in the compressed index that correspond with the requested byte positions (\" + startByte + \",\" + endByte + \")\")\n                return null\n            }\n            allBytes = await this.loadAndUncompressBlocks(relevantBlockIndices, startByte)\n        }\n\n        if (!allBytes) {\n            return null\n        }\n\n        let nBases,\n            seqBytes = \"\",\n            srcPos = 0,\n            desPos = 0,\n            allBytesLength = allBytes.length\n\n        if (offset > 0) {\n            nBases = Math.min(end - start, basesPerLine - offset)\n            seqBytes += allBytes.substr(srcPos, nBases)\n            srcPos += (nBases + nEndBytes)\n            desPos += nBases\n        }\n\n        while (srcPos < allBytesLength) {\n            nBases = Math.min(basesPerLine, allBytesLength - srcPos)\n            seqBytes += allBytes.substr(srcPos, nBases)\n            srcPos += (nBases + nEndBytes)\n            desPos += nBases\n        }\n\n        return seqBytes\n\n    }\n}\n\nexport default FastaSequence\n\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n// Indexed fasta files\nimport {BGZip, igvxhr, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport Chromosome from \"./chromosome.js\"\nimport {isDataURL} from \"../util/igvUtils.js\"\n\nconst splitLines = StringUtils.splitLines\n\nconst reservedProperties = new Set(['fastaURL', 'indexURL', 'cytobandURL', 'indexed'])\n\nclass ChromSizes {\n\n\n    constructor(url) {\n        this.url = url\n        this.chromosomeNames = []\n        this.chromosomes = {}\n    }\n\n\n    async init() {\n        return this.loadAll()\n    }\n\n    async getSequence(chr, start, end) {\n\n        return undefined // TODO -- return array of \"N\"s?\n    }\n\n    async loadAll() {\n\n        let data\n        if (isDataURL(this.url)) {\n            let bytes = BGZip.decodeDataURI(this.fastaURL)\n            data = \"\"\n            for (let b of bytes) {\n                data += String.fromCharCode(b)\n            }\n        } else {\n            data = await igvxhr.load(this.url, {})\n        }\n\n\n        this.chromosomeNames = []\n        this.chromosomes = {}\n\n        const lines = splitLines(data)\n        let order = 0\n        for (let nextLine of lines) {\n            const tokens = nextLine.split('\\t')\n            this.chromosomeNames.push(tokens[0])\n            const chrLength = Number.parseInt(tokens[1])\n            const chromosome = new Chromosome(tokens[0], order++, chrLength)\n            this.chromosomes[tokens[0]] = chromosome\n\n        }\n    }\n\n}\n\n\nexport default ChromSizes\n","import NonIndexedFasta from \"./nonIndexedFasta.js\"\nimport FastaSequence from \"./indexedFasta.js\"\nimport {isDataURL} from \"../util/igvUtils.js\"\nimport ChromSizes from \"./chromSizes.js\"\n\nasync function loadFasta(reference) {\n\n    let fasta\n    if (\"chromsizes\" === reference.format) {\n        fasta = new ChromSizes(reference.fastaURL)\n    } else if (isDataURL(reference.fastaURL) || reference.indexed === false) {\n        fasta = new NonIndexedFasta(reference)\n    } else {\n        fasta = new FastaSequence(reference)\n    }\n    await fasta.init()\n    return fasta\n}\n\nexport {loadFasta}\n","const defaultNucleotideColors = {\n    \"A\": \"rgb(  0, 200,   0)\",\n    \"C\": \"rgb(  0,0,200)\",\n    \"T\": \"rgb(255,0,0)\",\n    \"G\": \"rgb(209,113,  5)\",\n    \"N\": \"rgb(80,80,80)\"\n}\n\nconst deuterNucleotideColors = {\n    \"A\": \"rgb(34,186,155)\",\n    \"C\": \"rgb(0,113,178)\",\n    \"T\": \"rgb(239,63,112)\",\n    \"G\": \"rgb(254,203,12)\",\n    \"N\": \"rgb(33,33,33)\"\n}\n\nconst ibmNucleotideColors = {\n    \"A\": \"#009E73\",\n    \"C\": \"#0072B2\",\n    \"T\": \"#D55E00\",\n    \"G\": \"#F0E442\",\n    \"N\": \"rgb(33,33,33)\"\n}\n\nexport {defaultNucleotideColors, deuterNucleotideColors, ibmNucleotideColors}\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport IGVGraphics from \"./igv-canvas.js\"\nimport {isSecureContext} from \"./util/igvUtils.js\"\nimport {reverseComplementSequence} from \"./util/sequenceUtils.js\"\nimport {loadFasta} from \"./genome/fasta.js\"\nimport {defaultNucleotideColors} from \"./util/nucleotideColors.js\";\n\nconst defaultSequenceTrackOrder = Number.MIN_SAFE_INTEGER\n\nconst translationDict = {\n    'TTT': 'F',\n    'TTC': 'F',\n    'TTA': 'L',\n    'TTG': 'L',\n    'CTT': 'L',\n    'CTC': 'L',\n    'CTA': 'L',\n    'CTG': 'L',\n    'ATT': 'I',\n    'ATC': 'I',\n    'ATA': 'I',\n    'ATG': 'M',\n    'GTT': 'V',\n    'GTC': 'V',\n    'GTA': 'V',\n    'GTG': 'V',\n    'TCT': 'S',\n    'TCC': 'S',\n    'TCA': 'S',\n    'TCG': 'S',\n    'CCT': 'P',\n    'CCC': 'P',\n    'CCA': 'P',\n    'CCG': 'P',\n    'ACT': 'T',\n    'ACC': 'T',\n    'ACA': 'T',\n    'ACG': 'T',\n    'GCT': 'A',\n    'GCC': 'A',\n    'GCA': 'A',\n    'GCG': 'A',\n    'TAT': 'Y',\n    'TAC': 'Y',\n    'TAA': 'STOP',\n    'TAG': 'STOP',\n    'CAT': 'H',\n    'CAC': 'H',\n    'CAA': 'Q',\n    'CAG': 'Q',\n    'AAT': 'N',\n    'AAC': 'N',\n    'AAA': 'K',\n    'AAG': 'K',\n    'GAT': 'D',\n    'GAC': 'D',\n    'GAA': 'E',\n    'GAG': 'E',\n    'TGT': 'C',\n    'TGC': 'C',\n    'TGA': 'STOP',\n    'TGG': 'W',\n    'CGT': 'R',\n    'CGC': 'R',\n    'CGA': 'R',\n    'CGG': 'R',\n    'AGT': 'S',\n    'AGC': 'S',\n    'AGA': 'R',\n    'AGG': 'R',\n    'GGT': 'G',\n    'GGC': 'G',\n    'GGA': 'G',\n    'GGG': 'G'\n}\n\nconst complement = {}\nconst t1 = ['A', 'G', 'C', 'T', 'Y', 'R', 'W', 'S', 'K', 'M', 'D', 'V', 'H', 'B', 'N', 'X']\nconst t2 = ['T', 'C', 'G', 'A', 'R', 'Y', 'W', 'S', 'M', 'K', 'H', 'B', 'D', 'V', 'N', 'X']\nfor (let i = 0; i < t1.length; i++) {\n    complement[t1[i]] = t2[i]\n    complement[t1[i].toLowerCase()] = t2[i].toLowerCase()\n}\n\nconst DEFAULT_HEIGHT = 25\nconst TRANSLATED_HEIGHT = 115\nconst SEQUENCE_HEIGHT = 15\nconst FRAME_HEIGHT = 25\nconst FRAME_BORDER = 5\nconst BP_PER_PIXEL_THRESHOLD = 1 / 10\n\nconst bppFeatureFetchThreshold = 10\n\nclass SequenceTrack {\n\n    constructor(config, browser) {\n\n        this.config = config\n        this.browser = browser\n        this.type = \"sequence\"\n        this.removable = config.removable === undefined ? true : config.removable      // Defaults to true\n        this.name = config.name\n        this.id = config.id\n        this.sequenceType = config.sequenceType || \"dna\"             //   dna | rna | prot\n        this.disableButtons = false\n        this.order = config.order || defaultSequenceTrackOrder\n        this.ignoreTrackMenu = false\n\n        this.reversed = config.reversed === true\n        this.frameTranslate = config.frameTranslate === true\n        this.height = this.frameTranslate ? TRANSLATED_HEIGHT : DEFAULT_HEIGHT\n\n        // Hack for backward compatibility\n        if(config.url) {\n            config.fastaURL = config.url\n        }\n\n        if(!config.fastaURL) {\n            // Mark this as the genome reference sequence ==> backward compatibility convention\n            this.id = config.id || \"sequence\"\n        }\n\n    }\n\n    menuItemList() {\n        return [\n            {\n                name: this.reversed ? \"Forward\" : \"Reverse\",\n                click: () => {\n                    this.reversed = !this.reversed\n                    this.trackView.repaintViews()\n                }\n            },\n            {\n                name: this.frameTranslate ? \"Close Translation\" : \"Three-frame Translate\",\n                click: () => {\n                    this.frameTranslate = !this.frameTranslate\n                    if (this.frameTranslate) {\n                        for (let vp of this.trackView.viewports) {\n                            vp.setContentHeight(TRANSLATED_HEIGHT)\n                        }\n                        this.trackView.setTrackHeight(TRANSLATED_HEIGHT)\n                    } else {\n                        for (let vp of this.trackView.viewports) {\n                            vp.setContentHeight(DEFAULT_HEIGHT)\n                        }\n                        this.trackView.setTrackHeight(DEFAULT_HEIGHT)\n                    }\n                    this.trackView.repaintViews()\n\n                }\n            }\n        ]\n    }\n\n    contextMenuItemList(clickState) {\n        const viewport = clickState.viewport\n        if (viewport.referenceFrame.bpPerPixel <= 1) {\n            const pixelWidth = viewport.getWidth()\n            const bpWindow = pixelWidth * viewport.referenceFrame.bpPerPixel\n            const chr = viewport.referenceFrame.chr\n            const start = Math.floor(viewport.referenceFrame.start)\n            const end = Math.ceil(start + bpWindow)\n            const items = [\n                {\n                    label: this.reversed ? 'View visible sequence (reversed)...' : 'View visible sequence...',\n                    click: async () => {\n                        let seq = await this.browser.genome.sequence.getSequence(chr, start, end)\n                        if (!seq) {\n                            seq = \"Unknown sequence\"\n                        } else if (this.reversed) {\n                            seq = reverseComplementSequence(seq)\n                        }\n                        this.browser.alert.present(seq)\n                    }\n                }\n            ]\n            if (isSecureContext()) {\n                items.push({\n                    label: 'Copy visible sequence',\n                    click: async () => {\n                        let seq = await this.browser.genome.sequence.getSequence(chr, start, end)\n                        if (!seq) {\n                            seq = \"Unknown sequence\"\n                        } else if (this.reversed) {\n                            seq = reverseComplementSequence(seq)\n                        }\n                        try {\n                            await navigator.clipboard.writeText(seq)\n                        } catch (e) {\n                            console.error(e)\n                            this.browser.alert.present(`error copying sequence to clipboard ${e}`)\n                        }\n                    }\n\n                })\n            }\n            items.push('<hr/>')\n\n            return items\n        } else {\n            return undefined\n        }\n    }\n\n    translateSequence(seq) {\n\n        const threeFrame = [[], [], []]\n\n        for (let fNum of [0, 1, 2]) {\n            let idx = fNum\n\n            while ((seq.length - idx) >= 3) {\n                let st = seq.slice(idx, idx + 3)\n                if (this.reversed) {\n                    st = st.split('').reverse().join('')\n                }\n\n                const aa = translationDict[st.toUpperCase()] || \"\"\n                threeFrame[fNum].push({\n                    codons: st,\n                    aminoA: aa\n                })\n                idx += 3\n            }\n        }\n\n        return threeFrame\n    }\n\n    /**\n     * Return the source for sequence.  If an explicit fasta url is defined, use it, otherwise fetch sequence\n     * from the current genome\n     * *\n     * @returns {Promise<WrappedFasta|*>}\n     */\n    async getSequenceSource() {\n        if(this.config.fastaURL) {\n            if(!this.fasta) {\n                this.fasta = new WrappedFasta(this.config, this.browser.genome)\n                await this.fasta.init()\n            }\n            return this.fasta\n        } else {\n            return this.browser.genome.sequence\n        }\n    }\n\n    async getFeatures(chr, start, end, bpPerPixel) {\n\n        start = Math.floor(start)\n        end = Math.floor(end)\n\n        if (bpPerPixel && bpPerPixel > bppFeatureFetchThreshold) {\n            return null\n        } else {\n            const sequenceSource = await this.getSequenceSource()\n            const sequence = await sequenceSource.getSequence(chr, start, end)\n            return {\n                bpStart: start,\n                sequence: sequence\n            }\n        }\n    }\n\n    draw(options) {\n\n        const ctx = options.context\n\n        if (options.features) {\n\n            let sequence = options.features.sequence\n            if(!sequence) {\n                return\n            }\n\n            if (this.reversed) {\n                sequence = sequence.split('').map(function (cv) {\n                    return complement[cv]\n                }).join('')\n            }\n\n            const sequenceBpStart = options.features.bpStart  // genomic position at start of sequence\n            const bpEnd = 1 + options.bpStart + (options.pixelWidth * options.bpPerPixel)\n\n            for (let bp = Math.floor(options.bpStart); bp <= bpEnd; bp++) {\n\n                const seqIdx = Math.floor(bp - sequenceBpStart)\n\n                if (seqIdx >= 0 && seqIdx < sequence.length) {\n\n                    const offsetBP = bp - options.bpStart\n                    const aPixel = offsetBP / options.bpPerPixel\n                    const pixelWidth = 1 / options.bpPerPixel\n                    const baseLetter = sequence[seqIdx]\n                    const color = this.fillColor(baseLetter.toUpperCase())\n\n                    if (options.bpPerPixel > BP_PER_PIXEL_THRESHOLD) {\n                        IGVGraphics.fillRect(ctx, aPixel, FRAME_BORDER, pixelWidth, SEQUENCE_HEIGHT - FRAME_BORDER, {fillStyle: color})\n                    } else {\n                        const textPixel = aPixel + 0.5 * (pixelWidth - ctx.measureText(baseLetter).width)\n\n\n\n\n                        if ('y' === options.axis) {\n                            ctx.save()\n                            IGVGraphics.labelTransformWithContext(ctx, textPixel)\n                            IGVGraphics.strokeText(ctx, baseLetter, textPixel, SEQUENCE_HEIGHT, {strokeStyle: color})\n                            ctx.restore()\n                        } else {\n                            IGVGraphics.strokeText(ctx, baseLetter, textPixel, SEQUENCE_HEIGHT, {strokeStyle: color})\n                        }\n\n                    }\n                }\n            }\n\n            if (this.frameTranslate) {\n\n                let y = SEQUENCE_HEIGHT + 2 * FRAME_BORDER\n                const translatedSequence = this.translateSequence(sequence)\n\n                for (let fNum = 0; fNum < translatedSequence.length; fNum++) {    // == 3, 1 for each frame\n\n                    const aaSequence = translatedSequence[fNum]  // AA sequence for this frame\n\n                    for (let idx = 0; idx < aaSequence.length; idx++) {\n\n                        let color = 0 === idx % 2 ? 'rgb(160,160,160)' : 'rgb(224,224,224)'\n                        const cv = aaSequence[idx]\n\n                        const bpPos = sequenceBpStart + fNum + (idx * 3)\n                        const bpOffset = bpPos - options.bpStart\n                        const p0 = Math.floor(bpOffset / options.bpPerPixel)\n                        const p1 = Math.floor((bpOffset + 3) / options.bpPerPixel)\n                        const pc = Math.round((p0 + p1) / 2)\n\n                        if (p1 < 0) {\n                            continue   // off left edge\n                        } else if (p0 > options.pixelWidth) {\n                            break      // off right edge\n                        }\n\n                        let aaLabel = cv.aminoA\n                        if (cv.aminoA.indexOf('STOP') > -1) {\n                            color = 'rgb(255, 0, 0)'\n                            aaLabel = 'STOP' //Color blind accessible\n                        } else if (cv.aminoA === 'M') {\n                            color = 'rgb(0, 153, 0)'\n                            aaLabel = 'START' //Color blind accessible\n                        }\n\n                        IGVGraphics.fillRect(ctx, p0, y, p1 - p0, FRAME_HEIGHT, {fillStyle: color})\n\n                        if (options.bpPerPixel <= 1 / 10) {\n                            IGVGraphics.strokeText(ctx, aaLabel, pc - (ctx.measureText(aaLabel).width / 2), y + 15)\n                        }\n                    }\n                    y += (FRAME_HEIGHT + FRAME_BORDER)\n                }\n            }\n        }\n    }\n\n    get supportsWholeGenome() {\n        return false\n    }\n\n    computePixelHeight(ignore) {\n        this.height = this.frameTranslate ? TRANSLATED_HEIGHT : DEFAULT_HEIGHT\n        return this.height\n    }\n\n    fillColor(index) {\n\n        if (this.color) {\n            return this.color\n        } else if (\"dna\" === this.sequenceType) {\n            // return this.browser.nucleotideColors[index] || 'gray'\n            return defaultNucleotideColors[index] || 'gray'\n        } else {\n            return 'rgb(0, 0, 150)'\n        }\n    }\n\n    /**\n     * Return the current state of the track.  Used to create sessions and bookmarks.\n     *\n     * @returns {*|{}}\n     */\n    getState() {\n        const config = {\n            type: \"sequence\"\n        }\n        if (this.order !== defaultSequenceTrackOrder) {\n            config.order = this.order\n        }\n        if (this.reversed) {\n            config.revealed = true\n        }\n        return config\n    }\n\n}\n\n/**\n * Wrapper for a Fasta object that does chr name alias translation.   This is not neccessary for the genome fasta,\n * as it defines the reference name, but can be neccessary if loading an additional fasta as a track\n *\n */\nclass WrappedFasta {\n\n    constructor(config, genome) {\n        this.config = config;\n        this.genome = genome\n    }\n\n    async init() {\n        this.fasta = await loadFasta(this.config)\n        this.chrNameMap = new Map()\n        for(let name of this.fasta.chromosomeNames) {\n            this.chrNameMap.set(this.genome.getChromosomeName(name), name)\n        }\n    }\n\n    async getSequence(chr, start, end) {\n        const chrName = this.chrNameMap.has(chr) ? this.chrNameMap.get(chr) : chr\n        return this.fasta.getSequence(chrName, start, end)\n    }\n\n}\n\nexport {defaultSequenceTrackOrder, bppFeatureFetchThreshold}\n\nexport default SequenceTrack\n\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport $ from \"./vendor/jquery-3.3.1.slim.js\"\nimport {DOMUtils, AlertDialog} from '../node_modules/igv-ui/dist/igv-ui.js'\nimport SequenceTrack from \"./sequenceTrack.js\"\n\nclass Viewport {\n\n    constructor(trackView, viewportColumn, referenceFrame, width) {\n\n        this.guid = DOMUtils.guid()\n        this.trackView = trackView\n        this.referenceFrame = referenceFrame\n\n        this.browser = trackView.browser\n\n        this.$viewport = $('<div class=\"igv-viewport\">')\n        viewportColumn.appendChild(this.$viewport.get(0))\n\n        if (trackView.track.height) {\n            this.$viewport.get(0).style.height = `${trackView.track.height}px`\n        }\n\n        // Create an alert dialog for the sequence track to copy ref sequence to.\n        if (trackView.track instanceof SequenceTrack) {\n            this.alert = new AlertDialog(this.$viewport.get(0))\n        }\n\n        this.contentTop = 0\n        this.contentHeight = this.$viewport.height()\n\n\n        this.$viewport.width(width)\n\n        this.initializationHelper()\n\n    }\n\n    initializationHelper() {\n\n    }\n\n    showMessage(message) {\n        if (!this.messageDiv) {\n            this.messageDiv = document.createElement('div')\n            this.messageDiv.className = 'igv-viewport-message'\n            //this.contentDiv.append(this.messageDiv)\n            this.$viewport.append($(this.messageDiv))\n        }\n        this.messageDiv.textContent = message\n        this.messageDiv.style.display = 'inline-block'\n    }\n\n    hideMessage(message) {\n        if (this.messageDiv)\n            this.messageDiv.style.display = 'none'\n    }\n\n    setTrackLabel(label) {\n    }\n\n    startSpinner() {\n    }\n\n    stopSpinner() {\n    }\n\n    checkZoomIn() {\n        return true\n    }\n\n    shift() {\n    }\n\n    setTop(contentTop) {\n\n        this.contentTop = contentTop\n        const viewportHeight = this.$viewport.height()\n        const viewTop = -contentTop\n        const viewBottom = viewTop + viewportHeight\n\n        //this.$content.css('top', `${contentTop}px`)\n        //\n        // if (undefined === this.canvasVerticalRange || this.canvasVerticalRange.bottom < viewBottom || this.canvasVerticalRange.top > viewTop) {\n        //     console.log(\"Repaint \" + this.canvasVerticalRange)\n        //    this.repaint()\n        // }\n\n    }\n\n    async loadFeatures() {\n        return undefined\n    }\n\n    clearCache() {\n\n    }\n\n    async repaint() {\n    }\n\n    draw(drawConfiguration, features, roiFeatures) {\n        console.log('Viewport - draw(drawConfiguration, features, roiFeatures)')\n    }\n\n    checkContentHeight(features) {\n\n        let track = this.trackView.track\n        features = features || this.cachedFeatures\n        if (\"FILL\" === track.displayMode) {\n            this.setContentHeight(this.$viewport.height())\n        } else if (typeof track.computePixelHeight === 'function') {\n            if (features && features.length > 0) {\n                let requiredContentHeight = track.computePixelHeight(features)\n                //let currentContentHeight = this.$content.height()\n                let currentContentHeight = this.contentHeight\n                if (requiredContentHeight !== currentContentHeight) {\n                    this.setContentHeight(requiredContentHeight)\n                }\n            }\n        }\n    }\n\n    getContentHeight() {\n        //return this.$content.height()\n        return this.contentHeight\n    }\n\n    setContentHeight(contentHeight) {\n       this.contentHeight = contentHeight\n    }\n\n    isLoading() {\n        return false\n    }\n\n    saveSVG() {\n\n    }\n\n    isVisible() {\n        return this.$viewport.width()\n    }\n\n    setWidth(width) {\n        this.$viewport.width(width)\n    }\n\n    getWidth() {\n        return this.$viewport.width()\n    }\n\n    getContentTop() {\n        return this.contentTop\n    }\n\n    containsPosition(chr, position) {\n        console.log('Viewport - containsPosition(chr, position)')\n    }\n\n    addMouseHandlers() {\n    }\n\n    removeMouseHandlers() {\n    }\n\n    /**\n     * Called when the associated track is removed.  Do any needed cleanup here.\n     */\n    dispose() {\n\n        if (this.popover) {\n            this.popover.dispose()\n        }\n\n        this.$viewport.get(0).remove()\n\n        // Null out all properties -- this should not be neccessary, but just in case there is a\n        // reference to self somewhere we want to free memory.\n        for (let key of Object.keys(this)) {\n            this[key] = undefined\n        }\n    }\n\n}\n\nexport default Viewport\n","/*!!\n *  Canvas 2 Svg v1.0.19\n *  A low level canvas to SVG converter. Uses a mock canvas context to build an SVG document.\n *\n *  Licensed under the MIT license:\n *  http://www.opensource.org/licenses/mit-license.php\n *\n *  Author:\n *  Kerry Liu\n *\n *  Copyright (c) 2014 Gliffy Inc.\n */\n\n\"use strict\"\n\n//helper function to format a string\nfunction format(str, args) {\n    var keys = Object.keys(args), i\n    for (i = 0; i < keys.length; i++) {\n        str = str.replace(new RegExp(\"\\\\{\" + keys[i] + \"\\\\}\", \"gi\"), args[keys[i]])\n    }\n    return str\n}\n\n//helper function that generates a random string\nfunction randomString(holder) {\n    var chars, randomstring, i\n    if (!holder) {\n        throw new Error(\"cannot create a random attribute name for an undefined object\")\n    }\n    chars = \"ABCDEFGHIJKLMNOPQRSTUVWXTZabcdefghiklmnopqrstuvwxyz\"\n    randomstring = \"\"\n    do {\n        randomstring = \"\"\n        for (i = 0; i < 12; i++) {\n            randomstring += chars[Math.floor(Math.random() * chars.length)]\n        }\n    } while (holder[randomstring])\n    return randomstring\n}\n\n//helper function to map named to numbered entities\nfunction createNamedToNumberedLookup(items, radix) {\n    var i, entity, lookup = {}, base10, base16\n    items = items.split(',')\n    radix = radix || 10\n    // Map from named to numbered entities.\n    for (i = 0; i < items.length; i += 2) {\n        entity = '&' + items[i + 1] + ';'\n        base10 = parseInt(items[i], radix)\n        lookup[entity] = '&#' + base10 + ';'\n    }\n    //FF and IE need to create a regex from hex values ie &nbsp; == \\xa0\n    lookup[\"\\\\xa0\"] = '&#160;'\n    return lookup\n}\n\n//helper function to map canvas-textAlign to svg-textAnchor\nfunction getTextAnchor(textAlign) {\n    //TODO: support rtl languages\n    var mapping = {\"left\": \"start\", \"right\": \"end\", \"center\": \"middle\", \"start\": \"start\", \"end\": \"end\"}\n    return mapping[textAlign] || mapping.start\n}\n\n//helper function to map canvas-textBaseline to svg-dominantBaseline\nfunction getDominantBaseline(textBaseline) {\n    //INFO: not supported in all browsers\n    var mapping = {\n        \"alphabetic\": \"alphabetic\",\n        \"hanging\": \"hanging\",\n        \"top\": \"text-before-edge\",\n        \"bottom\": \"text-after-edge\",\n        \"middle\": \"central\"\n    }\n    return mapping[textBaseline] || mapping.alphabetic\n}\n\n\n/**\n * Return a new normalized vector of given vector\n */\nfunction normalize(vector) {\n    var len = Math.sqrt(vector[0] * vector[0] + vector[1] * vector[1])\n    return [vector[0] / len, vector[1] / len]\n}\n\n\nfunction intersectRect(rect1, rect2) {\n    return (rect1.x < rect2.x + rect2.width &&\n        rect1.x + rect1.width > rect2.x &&\n        rect1.y < rect2.y + rect2.height &&\n        rect1.y + rect1.height > rect2.y)\n}\n\n\n// Unpack entities lookup where the numbers are in radix 32 to reduce the size\n// entity mapping courtesy of tinymce\nconst namedEntities = createNamedToNumberedLookup(\n    '50,nbsp,51,iexcl,52,cent,53,pound,54,curren,55,yen,56,brvbar,57,sect,58,uml,59,copy,' +\n    '5a,ordf,5b,laquo,5c,not,5d,shy,5e,reg,5f,macr,5g,deg,5h,plusmn,5i,sup2,5j,sup3,5k,acute,' +\n    '5l,micro,5m,para,5n,middot,5o,cedil,5p,sup1,5q,ordm,5r,raquo,5s,frac14,5t,frac12,5u,frac34,' +\n    '5v,iquest,60,Agrave,61,Aacute,62,Acirc,63,Atilde,64,Auml,65,Aring,66,AElig,67,Ccedil,' +\n    '68,Egrave,69,Eacute,6a,Ecirc,6b,Euml,6c,Igrave,6d,Iacute,6e,Icirc,6f,Iuml,6g,ETH,6h,Ntilde,' +\n    '6i,Ograve,6j,Oacute,6k,Ocirc,6l,Otilde,6m,Ouml,6n,times,6o,Oslash,6p,Ugrave,6q,Uacute,' +\n    '6r,Ucirc,6s,Uuml,6t,Yacute,6u,THORN,6v,szlig,70,agrave,71,aacute,72,acirc,73,atilde,74,auml,' +\n    '75,aring,76,aelig,77,ccedil,78,egrave,79,eacute,7a,ecirc,7b,euml,7c,igrave,7d,iacute,7e,icirc,' +\n    '7f,iuml,7g,eth,7h,ntilde,7i,ograve,7j,oacute,7k,ocirc,7l,otilde,7m,ouml,7n,divide,7o,oslash,' +\n    '7p,ugrave,7q,uacute,7r,ucirc,7s,uuml,7t,yacute,7u,thorn,7v,yuml,ci,fnof,sh,Alpha,si,Beta,' +\n    'sj,Gamma,sk,Delta,sl,Epsilon,sm,Zeta,sn,Eta,so,Theta,sp,Iota,sq,Kappa,sr,Lambda,ss,Mu,' +\n    'st,Nu,su,Xi,sv,Omicron,t0,Pi,t1,Rho,t3,Sigma,t4,Tau,t5,Upsilon,t6,Phi,t7,Chi,t8,Psi,' +\n    't9,Omega,th,alpha,ti,beta,tj,gamma,tk,delta,tl,epsilon,tm,zeta,tn,eta,to,theta,tp,iota,' +\n    'tq,kappa,tr,lambda,ts,mu,tt,nu,tu,xi,tv,omicron,u0,pi,u1,rho,u2,sigmaf,u3,sigma,u4,tau,' +\n    'u5,upsilon,u6,phi,u7,chi,u8,psi,u9,omega,uh,thetasym,ui,upsih,um,piv,812,bull,816,hellip,' +\n    '81i,prime,81j,Prime,81u,oline,824,frasl,88o,weierp,88h,image,88s,real,892,trade,89l,alefsym,' +\n    '8cg,larr,8ch,uarr,8ci,rarr,8cj,darr,8ck,harr,8dl,crarr,8eg,lArr,8eh,uArr,8ei,rArr,8ej,dArr,' +\n    '8ek,hArr,8g0,forall,8g2,part,8g3,exist,8g5,empty,8g7,nabla,8g8,isin,8g9,notin,8gb,ni,8gf,prod,' +\n    '8gh,sum,8gi,minus,8gn,lowast,8gq,radic,8gt,prop,8gu,infin,8h0,ang,8h7,and,8h8,or,8h9,cap,8ha,cup,' +\n    '8hb,int,8hk,there4,8hs,sim,8i5,cong,8i8,asymp,8j0,ne,8j1,equiv,8j4,le,8j5,ge,8k2,sub,8k3,sup,8k4,' +\n    'nsub,8k6,sube,8k7,supe,8kl,oplus,8kn,otimes,8l5,perp,8m5,sdot,8o8,lceil,8o9,rceil,8oa,lfloor,8ob,' +\n    'rfloor,8p9,lang,8pa,rang,9ea,loz,9j0,spades,9j3,clubs,9j5,hearts,9j6,diams,ai,OElig,aj,oelig,b0,' +\n    'Scaron,b1,scaron,bo,Yuml,m6,circ,ms,tilde,802,ensp,803,emsp,809,thinsp,80c,zwnj,80d,zwj,80e,lrm,' +\n    '80f,rlm,80j,ndash,80k,mdash,80o,lsquo,80p,rsquo,80q,sbquo,80s,ldquo,80t,rdquo,80u,bdquo,810,dagger,' +\n    '811,Dagger,81g,permil,81p,lsaquo,81q,rsaquo,85c,euro', 32)\n\n\n//Some basic mappings for attributes and default values.\nconst STYLES = {\n    \"strokeStyle\": {\n        svgAttr: \"stroke\", //corresponding svg attribute\n        canvas: \"#000000\", //canvas default\n        svg: \"none\",       //svg default\n        apply: \"stroke\"    //apply on stroke() or fill()\n    },\n    \"fillStyle\": {\n        svgAttr: \"fill\",\n        canvas: \"#000000\",\n        svg: null, //svg default is black, but we need to special case this to handle canvas stroke without fill\n        apply: \"fill\"\n    },\n    \"lineCap\": {\n        svgAttr: \"stroke-linecap\",\n        canvas: \"butt\",\n        svg: \"butt\",\n        apply: \"stroke\"\n    },\n    \"lineJoin\": {\n        svgAttr: \"stroke-linejoin\",\n        canvas: \"miter\",\n        svg: \"miter\",\n        apply: \"stroke\"\n    },\n    \"miterLimit\": {\n        svgAttr: \"stroke-miterlimit\",\n        canvas: 10,\n        svg: 4,\n        apply: \"stroke\"\n    },\n    \"lineWidth\": {\n        svgAttr: \"stroke-width\",\n        canvas: 1,\n        svg: 1,\n        apply: \"stroke\"\n    },\n    \"globalAlpha\": {\n        svgAttr: \"opacity\",\n        canvas: 1,\n        svg: 1,\n        apply: \"fill stroke\"\n    },\n    \"font\": {\n        //font converts to multiple svg attributes, there is custom logic for this\n        canvas: \"10px sans-serif\"\n    },\n    \"shadowColor\": {\n        canvas: \"#000000\"\n    },\n    \"shadowOffsetX\": {\n        canvas: 0\n    },\n    \"shadowOffsetY\": {\n        canvas: 0\n    },\n    \"shadowBlur\": {\n        canvas: 0\n    },\n    \"textAlign\": {\n        canvas: \"start\"\n    },\n    \"textBaseline\": {\n        canvas: \"alphabetic\"\n    },\n    \"lineDash\": {\n        svgAttr: \"stroke-dasharray\",\n        canvas: [],\n        svg: null,\n        apply: \"stroke\"\n    }\n}\n\n/**\n *\n * @param gradientNode - reference to the gradient\n * @constructor\n */\nclass CanvasGradient {\n    constructor(gradientNode, ctx) {\n        this.__root = gradientNode\n        this.__ctx = ctx\n    }\n\n    /**\n     * Adds a color stop to the gradient root\n     */\n    addColorStop(offset, color) {\n        var stop = this.__ctx.__createElement(\"stop\"), regex, matches\n        stop.setAttribute(\"offset\", offset)\n        if (color && color.indexOf(\"rgba\") !== -1) {\n            //separate alpha value, since webkit can't handle it\n            regex = /rgba\\(\\s*(\\d+)\\s*,\\s*(\\d+)\\s*,\\s*(\\d+)\\s*,\\s*(\\d?\\.?\\d*)\\s*\\)/gi\n            matches = regex.exec(color)\n            stop.setAttribute(\"stop-color\", format(\"rgb({r},{g},{b})\", {r: matches[1], g: matches[2], b: matches[3]}))\n            stop.setAttribute(\"stop-opacity\", matches[4])\n        } else {\n            stop.setAttribute(\"stop-color\", color)\n        }\n        this.__root.appendChild(stop)\n    }\n}\n\nclass CanvasPattern {\n    constructor(pattern, ctx) {\n        this.__root = pattern\n        this.__ctx = ctx\n    }\n}\n\n/**\n * The mock canvas context\n * @param config - options include:\n * ctx - existing Context2D to wrap around\n * width - width of your canvas (defaults to 500)\n * height - height of your canvas (defaults to 500)\n * enableMirroring - enables canvas mirroring (get image data) (defaults to false)\n * document - the document object (defaults to the current document)\n */\nclass ctx {\n    constructor(config) {\n\n        if (!(this instanceof ctx)) {\n            //did someone call this without new?\n            return new ctx(config)\n        }\n\n        // clone config\n        this.config = config\n\n        //setup options\n        this.width = config.width\n        this.height = config.height\n        this.enableMirroring = config.enableMirroring || false\n\n        this.canvas = this   ///point back to this instance!\n        this.__document = document\n\n        // allow passing in an existing context to wrap around\n        // if a context is passed in, we know a canvas already exist\n        if (config.ctx) {\n            this.__ctx = config.ctx\n        } else {\n            this.__canvas = this.__document.createElement(\"canvas\")\n            this.__ctx = this.__canvas.getContext(\"2d\")\n        }\n\n        // give this canvas a type\n        this.isSVG = true\n\n        this.__setDefaultStyles()\n        this.__stack = [this.__getStyleState()]\n        this.__groupStack = []\n\n        // root svg element\n        this.__root = this.__createElement(\"svg\")\n        this.__root.setAttribute(\"width\", this.width)\n        this.__root.setAttribute(\"height\", this.height)\n\n        // allow contents to overflow svg bbox\n        this.__root.setAttribute('overflow', 'visible')\n\n        // viewbox\n        if (config.viewbox) {\n            const str = config.viewbox.x + ' ' + config.viewbox.y + ' ' + config.viewbox.width + ' ' + config.viewbox.height\n            this.__root.setAttribute(\"viewBox\", str)\n\n            this.viewbox = config.viewbox\n        }\n\n        // make sure we don't generate the same ids in defs\n        this.__ids = {}\n\n        // defs\n        this.__defs = this.__createElement(\"defs\")\n        this.__root.appendChild(this.__defs)\n\n        this.multiLocusGap = config.multiLocusGap\n\n        // svg background color\n        let backdropConfig =\n            {\n                id: 'svg_output_backdrop',\n                width: '100%',\n                height: '100%',\n                fill: config.backdropColor || 'white'\n            }\n\n        let backdropRect = this.__createElement('rect', backdropConfig)\n        this.__root.appendChild(backdropRect)\n\n        // root group\n        this.__rootGroup = this.__createElement('g', {id: 'root-group'})\n        this.__root.appendChild(this.__rootGroup)\n\n        // point current element to root group\n        this.__currentElement = this.__rootGroup\n    }\n\n    setWidth(width) {\n\n        this.width = width\n        this.__root.setAttribute(\"width\", this.width)\n\n        const str = this.config.viewbox.x + ' ' + this.config.viewbox.y + ' ' + width + ' ' + this.config.viewbox.height\n        this.__root.setAttribute(\"viewBox\", str)\n\n    };\n\n    setHeight(height) {\n\n        this.height = height\n        this.__root.setAttribute(\"height\", this.height)\n\n        const str = this.config.viewbox.x + ' ' + this.config.viewbox.y + ' ' + this.config.viewbox.width + ' ' + height\n        this.__root.setAttribute(\"viewBox\", str)\n\n    };\n\n    /**\n     * Creates the specified svg element\n     * @private\n     */\n    __createElement(elementName, properties, resetFill) {\n\n        if (typeof properties === \"undefined\") {\n            properties = {}\n        }\n\n        let element = this.__document.createElementNS(\"http://www.w3.org/2000/svg\", elementName)\n\n        if (resetFill) {\n            //if fill or stroke is not specified, the svg element should not display. By default SVG's fill is black.\n            element.setAttribute(\"fill\", \"none\")\n            element.setAttribute(\"stroke\", \"none\")\n        }\n\n        for (let key of Object.keys(properties)) {\n            element.setAttribute(key, properties[key])\n        }\n\n        return element\n    };\n\n    /**\n     * Applies default canvas styles to the context\n     * @private\n     */\n    __setDefaultStyles() {\n        //default 2d canvas context properties see:http://www.w3.org/TR/2dcontext/\n        var keys = Object.keys(STYLES), i, key\n        for (i = 0; i < keys.length; i++) {\n            key = keys[i]\n            this[key] = STYLES[key].canvas\n        }\n    };\n\n    /**\n     * Applies styles on restore\n     * @param styleState\n     * @private\n     */\n    __applyStyleState(styleState) {\n        var keys = Object.keys(styleState), i, key\n        for (i = 0; i < keys.length; i++) {\n            key = keys[i]\n            this[key] = styleState[key]\n        }\n    };\n\n    /**\n     * Gets the current style state\n     * @return {Object}\n     * @private\n     */\n    __getStyleState() {\n        var i, styleState = {}, keys = Object.keys(STYLES), key\n        for (i = 0; i < keys.length; i++) {\n            key = keys[i]\n            styleState[key] = this[key]\n        }\n        return styleState\n    };\n\n    /**\n     * Apples the current styles to the current SVG element. On \"ctx.fill\" or \"ctx.stroke\"\n     * @param type\n     * @private\n     */\n    __applyStyleToCurrentElement(type) {\n        var currentElement = this.__currentElement\n        var currentStyleGroup = this.__currentElementsToStyle\n        if (currentStyleGroup) {\n            currentElement.setAttribute(type, \"\")\n            currentElement = currentStyleGroup.element\n            currentStyleGroup.children.forEach(function (node) {\n                node.setAttribute(type, \"\")\n            })\n        }\n\n        var keys = Object.keys(STYLES), i, style, value, id, regex, matches\n        for (i = 0; i < keys.length; i++) {\n            style = STYLES[keys[i]]\n            value = this[keys[i]]\n            if (style.apply) {\n                //is this a gradient or pattern?\n                if (value instanceof CanvasPattern) {\n                    //pattern\n                    if (value.__ctx) {\n                        //copy over defs\n                        while (value.__ctx.__defs.childNodes.length) {\n                            id = value.__ctx.__defs.childNodes[0].getAttribute(\"id\")\n                            this.__ids[id] = id\n                            this.__defs.appendChild(value.__ctx.__defs.childNodes[0])\n                        }\n                    }\n                    currentElement.setAttribute(style.apply, format(\"url(#{id})\", {id: value.__root.getAttribute(\"id\")}))\n                } else if (value instanceof CanvasGradient) {\n                    //gradient\n                    currentElement.setAttribute(style.apply, format(\"url(#{id})\", {id: value.__root.getAttribute(\"id\")}))\n                } else if (style && style.apply.indexOf(type) !== -1 && style.svg !== value) {\n                    if ((style.svgAttr === \"stroke\" || style.svgAttr === \"fill\") && value && value.indexOf(\"rgba\") !== -1) {\n                        //separate alpha value, since illustrator can't handle it\n                        regex = /rgba\\(\\s*(\\d+)\\s*,\\s*(\\d+)\\s*,\\s*(\\d+)\\s*,\\s*(\\d?\\.?\\d*)\\s*\\)/gi\n                        matches = regex.exec(value)\n                        currentElement.setAttribute(style.svgAttr, format(\"rgb({r},{g},{b})\", {\n                            r: matches[1],\n                            g: matches[2],\n                            b: matches[3]\n                        }))\n                        //should take globalAlpha here\n                        var opacity = matches[4]\n                        var globalAlpha = this.globalAlpha\n                        if (globalAlpha != null) {\n                            opacity *= globalAlpha\n                        }\n                        currentElement.setAttribute(style.svgAttr + \"-opacity\", opacity)\n                    } else {\n                        var attr = style.svgAttr\n                        if (keys[i] === 'globalAlpha') {\n                            attr = type + '-' + style.svgAttr\n                            if (currentElement.getAttribute(attr)) {\n                                //fill-opacity or stroke-opacity has already been set by stroke or fill.\n                                continue\n                            }\n                        }\n                        //otherwise only update attribute if right type, and not svg default\n                        currentElement.setAttribute(attr, value)\n                    }\n                }\n            }\n        }\n    };\n\n    /**\n     * Will return the closest group or svg node. May return the current element.\n     * @private\n     */\n    __closestGroupOrSvg(node) {\n        node = node || this.__currentElement\n        if (node.nodeName === \"g\" || node.nodeName === \"svg\") {\n            return node\n        } else {\n            return this.__closestGroupOrSvg(node.parentNode)\n        }\n    };\n\n    /**\n     * Returns the serialized value of the svg so far\n     * @param fixNamedEntities - Standalone SVG doesn't support named entities, which document.createTextNode encodes.\n     *                           If true, we attempt to find all named entities and encode it as a numeric entity.\n     * @return serialized svg\n     */\n    getSerializedSvg(fixNamedEntities) {\n        var serialized = new XMLSerializer().serializeToString(this.__root),\n            keys, i, key, value, regexp, xmlns\n\n        //IE search for a duplicate xmnls because they didn't implement setAttributeNS correctly\n        // xmlns = /xmlns=\"http:\\/\\/www\\.w3\\.org\\/2000\\/svg\".+xmlns=\"http:\\/\\/www\\.w3\\.org\\/2000\\/svg/gi;\n        // if (xmlns.test(serialized)) {\n        //     serialized = serialized.replace('xmlns=\"http://www.w3.org/2000/svg','xmlns:xlink=\"http://www.w3.org/1999/xlink');\n        // }\n\n        if (fixNamedEntities) {\n            keys = Object.keys(namedEntities)\n            //loop over each named entity and replace with the proper equivalent.\n            for (i = 0; i < keys.length; i++) {\n                key = keys[i]\n                value = namedEntities[key]\n                regexp = new RegExp(key, \"gi\")\n                if (regexp.test(serialized)) {\n                    serialized = serialized.replace(regexp, value)\n                }\n            }\n        }\n\n        return serialized\n    };\n\n\n    /**\n     * Returns the root svg\n     * @return\n     */\n    getSvg() {\n        return this.__root\n    };\n\n    /**\n     * Will generate a group tag.\n     */\n    saveWithTranslationAndClipRect(id, tx, ty, width, height, clipYOffset) {\n\n        // clip rect\n        const clip_id = `${id}_clip_rect`\n        let clipPath = this.__createElement('clipPath', {id: clip_id})\n\n        this.__defs.appendChild(clipPath)\n\n        const config =\n            {\n                x: '0',\n                y: clipYOffset.toString(),\n                width: width.toString(),\n                height: height.toString()\n            }\n\n        clipPath.appendChild(this.__createElement('rect', config))\n\n        const group = this.__createElement(\"g\")\n        group.setAttribute('transform', format('translate({x},{y})', {x: tx, y: ty}))\n        group.setAttribute('clip-path', format('url(#{id})', {id: clip_id}))\n\n        const parent = this.__closestGroupOrSvg()\n        parent.appendChild(group)\n        this.__groupStack.push(parent)\n\n        this.__currentElement = group\n        this.__stack.push(this.__getStyleState())\n    };\n\n    save() {\n        var group = this.__createElement(\"g\")\n        var parent = this.__closestGroupOrSvg()\n        this.__groupStack.push(parent)\n        parent.appendChild(group)\n        this.__currentElement = group\n        this.__stack.push(this.__getStyleState())\n    };\n\n    /**\n     * Sets current element to parent, or just root if already root\n     */\n    restore() {\n        this.__currentElement = this.__groupStack.pop()\n        this.__currentElementsToStyle = null\n        //Clearing canvas will make the poped group invalid, currentElement is set to the root group node.\n        if (!this.__currentElement) {\n            this.__currentElement = this.__root.childNodes[1]\n        }\n        var state = this.__stack.pop()\n        this.__applyStyleState(state)\n    };\n\n    /**\n     * Helper method to add transform\n     * @private\n     */\n    __addTransform(t) {\n        //if the current element has siblings, add another group\n        var parent = this.__closestGroupOrSvg()\n        if (parent.childNodes.length > 0) {\n            if (this.__currentElement.nodeName === \"path\") {\n                if (!this.__currentElementsToStyle) this.__currentElementsToStyle = {element: parent, children: []}\n                this.__currentElementsToStyle.children.push(this.__currentElement)\n                this.__applyCurrentDefaultPath()\n            }\n\n            var group = this.__createElement(\"g\")\n            parent.appendChild(group)\n            this.__currentElement = group\n        }\n\n        var transform = this.__currentElement.getAttribute(\"transform\")\n        if (transform) {\n            transform += \" \"\n        } else {\n            transform = \"\"\n        }\n        transform += t\n        this.__currentElement.setAttribute(\"transform\", transform)\n    };\n\n    addTrackGroupWithTranslationAndClipRect(id, tx, ty, width, height, clipYOffset) {\n\n        // clip rect\n        const clip_id = id + '_clip_rect'\n        let clipPath = this.__createElement('clipPath', {id: clip_id})\n\n        this.__defs.appendChild(clipPath)\n        clipPath.appendChild(this.__createElement('rect', {\n            x: '0',\n            y: clipYOffset.toString(),\n            width: width.toString(),\n            height: height.toString()\n        }))\n\n        let group = this.__createElement('g')\n        this.__rootGroup.appendChild(group)\n\n        group.setAttribute('transform', format('translate({x},{y})', {x: tx, y: ty}))\n        group.setAttribute('id', (id + '_group'))\n\n        // add clip rect\n        group.setAttribute('clip-path', format('url(#{id})', {id: clip_id}))\n\n        this.__currentElement = group\n    };\n\n    /**\n     *  scales the current element\n     */\n    scale(x, y) {\n        if (y === undefined) {\n            y = x\n        }\n        this.__addTransform(format(\"scale({x},{y})\", {x: x, y: y}))\n    };\n\n    /**\n     * rotates the current element\n     */\n    rotate(angle) {\n        var degrees = (angle * 180 / Math.PI)\n        this.__addTransform(format(\"rotate({angle},{cx},{cy})\", {angle: degrees, cx: 0, cy: 0}))\n    };\n\n    /**\n     * translates the current element\n     */\n    translate(x, y) {\n        this.__addTransform(format(\"translate({x},{y})\", {x: x, y: y}))\n    };\n\n    /**\n     * applies a transform to the current element\n     */\n    transform(a, b, c, d, e, f) {\n        this.__addTransform(format(\"matrix({a},{b},{c},{d},{e},{f})\", {a: a, b: b, c: c, d: d, e: e, f: f}))\n    };\n\n    /**\n     * Create a new Path Element\n     */\n    beginPath() {\n        var path, parent\n\n        // Note that there is only one current default path, it is not part of the drawing state.\n        // See also: https://html.spec.whatwg.org/multipage/scripting.html#current-default-path\n        this.__currentDefaultPath = \"\"\n        this.__currentPosition = {}\n\n        path = this.__createElement(\"path\", {}, true)\n        parent = this.__closestGroupOrSvg()\n        parent.appendChild(path)\n        this.__currentElement = path\n    };\n\n    /**\n     * Helper function to apply currentDefaultPath to current path element\n     * @private\n     */\n    __applyCurrentDefaultPath() {\n        var currentElement = this.__currentElement\n        if (currentElement.nodeName === \"path\") {\n            currentElement.setAttribute(\"d\", this.__currentDefaultPath)\n        } else {\n            console.error(\"Attempted to apply path command to node\", currentElement.nodeName)\n        }\n    };\n\n    /**\n     * Helper function to add path command\n     * @private\n     */\n    __addPathCommand(command) {\n        this.__currentDefaultPath += \" \"\n        this.__currentDefaultPath += command\n    };\n\n    /**\n     * Adds the move command to the current path element,\n     * if the currentPathElement is not empty create a new path element\n     */\n    moveTo(x, y) {\n        if (this.__currentElement.nodeName !== \"path\") {\n            this.beginPath()\n        }\n\n        // creates a new subpath with the given point\n        this.__currentPosition = {x: x, y: y}\n        this.__addPathCommand(format(\"M {x} {y}\", {x: x, y: y}))\n    };\n\n    /**\n     * Closes the current path\n     */\n    closePath() {\n        if (this.__currentDefaultPath) {\n            this.__addPathCommand(\"Z\")\n        }\n    };\n\n    /**\n     * Adds a line to command\n     */\n    lineTo(x, y) {\n        this.__currentPosition = {x: x, y: y}\n        if (this.__currentDefaultPath && this.__currentDefaultPath.indexOf('M') > -1) {\n            this.__addPathCommand(format(\"L {x} {y}\", {x: x, y: y}))\n        } else {\n            this.__addPathCommand(format(\"M {x} {y}\", {x: x, y: y}))\n        }\n    };\n\n    /**\n     * Add a bezier command\n     */\n    bezierCurveTo(cp1x, cp1y, cp2x, cp2y, x, y) {\n        this.__currentPosition = {x: x, y: y}\n        this.__addPathCommand(format(\"C {cp1x} {cp1y} {cp2x} {cp2y} {x} {y}\",\n            {cp1x: cp1x, cp1y: cp1y, cp2x: cp2x, cp2y: cp2y, x: x, y: y}))\n    };\n\n    /**\n     * Adds a quadratic curve to command\n     */\n    quadraticCurveTo(cpx, cpy, x, y) {\n        this.__currentPosition = {x: x, y: y}\n        this.__addPathCommand(format(\"Q {cpx} {cpy} {x} {y}\", {cpx: cpx, cpy: cpy, x: x, y: y}))\n    };\n\n    /**\n     * Adds the arcTo to the current path\n     *\n     * @see http://www.w3.org/TR/2015/WD-2dcontext-20150514/#dom-context-2d-arcto\n     */\n    arcTo(x1, y1, x2, y2, radius) {\n        // Let the point (x0, y0) be the last point in the subpath.\n        var x0 = this.__currentPosition && this.__currentPosition.x\n        var y0 = this.__currentPosition && this.__currentPosition.y\n\n        // First ensure there is a subpath for (x1, y1).\n        if (typeof x0 == \"undefined\" || typeof y0 == \"undefined\") {\n            return\n        }\n\n        // Negative values for radius must cause the implementation to throw an IndexSizeError exception.\n        if (radius < 0) {\n            throw new Error(\"IndexSizeError: The radius provided (\" + radius + \") is negative.\")\n        }\n\n        // If the point (x0, y0) is equal to the point (x1, y1),\n        // or if the point (x1, y1) is equal to the point (x2, y2),\n        // or if the radius radius is zero,\n        // then the method must add the point (x1, y1) to the subpath,\n        // and connect that point to the previous point (x0, y0) by a straight line.\n        if (((x0 === x1) && (y0 === y1))\n            || ((x1 === x2) && (y1 === y2))\n            || (radius === 0)) {\n            this.lineTo(x1, y1)\n            return\n        }\n\n        // Otherwise, if the points (x0, y0), (x1, y1), and (x2, y2) all lie on a single straight line,\n        // then the method must add the point (x1, y1) to the subpath,\n        // and connect that point to the previous point (x0, y0) by a straight line.\n        var unit_vec_p1_p0 = normalize([x0 - x1, y0 - y1])\n        var unit_vec_p1_p2 = normalize([x2 - x1, y2 - y1])\n        if (unit_vec_p1_p0[0] * unit_vec_p1_p2[1] === unit_vec_p1_p0[1] * unit_vec_p1_p2[0]) {\n            this.lineTo(x1, y1)\n            return\n        }\n\n        // Otherwise, let The Arc be the shortest arc given by circumference of the circle that has radius radius,\n        // and that has one point tangent to the half-infinite line that crosses the point (x0, y0) and ends at the point (x1, y1),\n        // and that has a different point tangent to the half-infinite line that ends at the point (x1, y1), and crosses the point (x2, y2).\n        // The points at which this circle touches these two lines are called the start and end tangent points respectively.\n\n        // note that both vectors are unit vectors, so the length is 1\n        var cos = (unit_vec_p1_p0[0] * unit_vec_p1_p2[0] + unit_vec_p1_p0[1] * unit_vec_p1_p2[1])\n        var theta = Math.acos(Math.abs(cos))\n\n        // Calculate origin\n        var unit_vec_p1_origin = normalize([\n            unit_vec_p1_p0[0] + unit_vec_p1_p2[0],\n            unit_vec_p1_p0[1] + unit_vec_p1_p2[1]\n        ])\n        var len_p1_origin = radius / Math.sin(theta / 2)\n        var x = x1 + len_p1_origin * unit_vec_p1_origin[0]\n        var y = y1 + len_p1_origin * unit_vec_p1_origin[1]\n\n        // Calculate start angle and end angle\n        // rotate 90deg clockwise (note that y axis points to its down)\n        var unit_vec_origin_start_tangent = [\n            -unit_vec_p1_p0[1],\n            unit_vec_p1_p0[0]\n        ]\n        // rotate 90deg counter clockwise (note that y axis points to its down)\n        var unit_vec_origin_end_tangent = [\n            unit_vec_p1_p2[1],\n            -unit_vec_p1_p2[0]\n        ]\n        var getAngle = function (vector) {\n            // get angle (clockwise) between vector and (1, 0)\n            var x = vector[0]\n            var y = vector[1]\n            if (y >= 0) { // note that y axis points to its down\n                return Math.acos(x)\n            } else {\n                return -Math.acos(x)\n            }\n        }\n        var startAngle = getAngle(unit_vec_origin_start_tangent)\n        var endAngle = getAngle(unit_vec_origin_end_tangent)\n\n        // Connect the point (x0, y0) to the start tangent point by a straight line\n        this.lineTo(x + unit_vec_origin_start_tangent[0] * radius,\n            y + unit_vec_origin_start_tangent[1] * radius)\n\n        // Connect the start tangent point to the end tangent point by arc\n        // and adding the end tangent point to the subpath.\n        this.arc(x, y, radius, startAngle, endAngle)\n    };\n\n    /**\n     * Sets the stroke property on the current element\n     */\n    stroke() {\n        if (this.__currentElement.nodeName === \"path\") {\n            this.__currentElement.setAttribute(\"paint-order\", \"fill stroke markers\")\n        }\n        this.__applyCurrentDefaultPath()\n        this.__applyStyleToCurrentElement(\"stroke\")\n    };\n\n    /**\n     * Sets fill properties on the current element\n     */\n    fill() {\n        if (this.__currentElement.nodeName === \"path\") {\n            this.__currentElement.setAttribute(\"paint-order\", \"stroke fill markers\")\n        }\n        this.__applyCurrentDefaultPath()\n        this.__applyStyleToCurrentElement(\"fill\")\n    };\n\n    /**\n     *  Adds a rectangle to the path.\n     */\n    rect(x, y, width, height) {\n        if (this.__currentElement.nodeName !== \"path\") {\n            this.beginPath()\n        }\n        this.moveTo(x, y)\n        this.lineTo(x + width, y)\n        this.lineTo(x + width, y + height)\n        this.lineTo(x, y + height)\n        this.lineTo(x, y)\n        this.closePath()\n    };\n\n\n    /**\n     * adds a rectangle element\n     */\n    fillRect(x, y, width, height) {\n\n        if (height < 0) {\n            y += height\n            height = -height\n        }\n        if (width < 0) {\n            x += width\n            width = -width\n        }\n        // See if rect intersects current viewbox\n        var r2 = {\n            x: x,\n            y: y,\n            width: width,\n            height: height\n        }\n\n        if (this.viewbox) {\n            if (!intersectRect(this.viewbox, r2)) {\n                return\n            }\n        }\n\n        var rect, parent\n        rect = this.__createElement(\"rect\", r2, true)\n        parent = this.__closestGroupOrSvg()\n        parent.appendChild(rect)\n        this.__currentElement = rect\n        this.__applyStyleToCurrentElement(\"fill\")\n    };\n\n    /**\n     * Draws a rectangle with no fill\n     * @param x\n     * @param y\n     * @param width\n     * @param height\n     */\n    strokeRect(x, y, width, height) {\n        var rect, parent\n        rect = this.__createElement(\"rect\", {\n            x: x,\n            y: y,\n            width: width,\n            height: height\n        }, true)\n        parent = this.__closestGroupOrSvg()\n        parent.appendChild(rect)\n        this.__currentElement = rect\n        this.__applyStyleToCurrentElement(\"stroke\")\n    };\n\n    // stroke ellipse\n    strokeEllipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW) {\n        this.__ellipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW, 'stroke')\n    }\n\n    // fill ellipse\n    fillEllipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW) {\n        this.__ellipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW, 'fill')\n    }\n\n    // ellipse helper\n    __ellipse(cx, cy, rx, ry, rotation, startAngle, endAngle, isCCW, style) {\n\n        const config =\n            {\n                cx,\n                cy,\n                rx,\n                ry\n            }\n        const element = this.__createElement('ellipse', config, true)\n        const parent = this.__closestGroupOrSvg()\n        parent.appendChild(element)\n        this.__currentElement = element\n        this.__applyStyleToCurrentElement(style)\n    }\n\n    /**\n     * Clear entire canvas:\n     * 1. save current transforms\n     * 2. remove all the childNodes of the root g element\n     */\n    __clearCanvas() {\n        var current = this.__closestGroupOrSvg(),\n            transform = current.getAttribute(\"transform\")\n        var rootGroup = this.__root.childNodes[1]\n        var childNodes = rootGroup.childNodes\n        for (var i = childNodes.length - 1; i >= 0; i--) {\n            if (childNodes[i]) {\n                rootGroup.removeChild(childNodes[i])\n            }\n        }\n        this.__currentElement = rootGroup\n        //reset __groupStack as all the child group nodes are all removed.\n        this.__groupStack = []\n        if (transform) {\n            this.__addTransform(transform)\n        }\n    };\n\n    /**\n     * \"Clears\" a canvas by just drawing a white rectangle in the current group.\n     */\n    clearRect(x, y, width, height) {\n        //clear entire canvas\n        if (x === 0 && y === 0 && width === this.width && height === this.height) {\n            this.__clearCanvas()\n            return\n        }\n        var rect, parent = this.__closestGroupOrSvg()\n        rect = this.__createElement(\"rect\", {\n            x: x,\n            y: y,\n            width: width,\n            height: height,\n            fill: \"#FFFFFF\"\n        }, true)\n        parent.appendChild(rect)\n    };\n\n    /**\n     * Adds a linear gradient to a defs tag.\n     * Returns a canvas gradient object that has a reference to it's parent def\n     */\n    createLinearGradient(x1, y1, x2, y2) {\n        var grad = this.__createElement(\"linearGradient\", {\n            id: randomString(this.__ids),\n            x1: x1 + \"px\",\n            x2: x2 + \"px\",\n            y1: y1 + \"px\",\n            y2: y2 + \"px\",\n            \"gradientUnits\": \"userSpaceOnUse\"\n        }, false)\n        this.__defs.appendChild(grad)\n        return new CanvasGradient(grad, this)\n    };\n\n    /**\n     * Adds a radial gradient to a defs tag.\n     * Returns a canvas gradient object that has a reference to it's parent def\n     */\n    createRadialGradient(x0, y0, r0, x1, y1, r1) {\n        var grad = this.__createElement(\"radialGradient\", {\n            id: randomString(this.__ids),\n            cx: x1 + \"px\",\n            cy: y1 + \"px\",\n            r: r1 + \"px\",\n            fx: x0 + \"px\",\n            fy: y0 + \"px\",\n            \"gradientUnits\": \"userSpaceOnUse\"\n        }, false)\n        this.__defs.appendChild(grad)\n        return new CanvasGradient(grad, this)\n\n    };\n\n    /**\n     * Parses the font string and returns svg mapping\n     * @private\n     */\n    __parseFont() {\n        var regex = /^\\s*(?=(?:(?:[-a-z]+\\s*){0,2}(italic|oblique))?)(?=(?:(?:[-a-z]+\\s*){0,2}(small-caps))?)(?=(?:(?:[-a-z]+\\s*){0,2}(bold(?:er)?|lighter|[1-9]00))?)(?:(?:normal|\\1|\\2|\\3)\\s*){0,3}((?:xx?-)?(?:small|large)|medium|smaller|larger|[.\\d]+(?:\\%|in|[cem]m|ex|p[ctx]))(?:\\s*\\/\\s*(normal|[.\\d]+(?:\\%|in|[cem]m|ex|p[ctx])))?\\s*([-,\\'\\\"\\sa-z0-9]+?)\\s*$/i\n        var fontPart = regex.exec(this.font)\n        var data = {\n            style: fontPart[1] || 'normal',\n            size: fontPart[4] || '10px',\n            family: fontPart[6] || 'sans-serif',\n            weight: fontPart[3] || 'normal',\n            decoration: fontPart[2] || 'normal',\n            href: null\n        }\n\n        //canvas doesn't support underline natively, but we can pass this attribute\n        if (this.__fontUnderline === \"underline\") {\n            data.decoration = \"underline\"\n        }\n\n        //canvas also doesn't support linking, but we can pass this as well\n        if (this.__fontHref) {\n            data.href = this.__fontHref\n        }\n\n        return data\n    };\n\n    /**\n     * Helper to link text fragments\n     * @param font\n     * @param element\n     * @return {*}\n     * @private\n     */\n    __wrapTextLink(font, element) {\n        if (font.href) {\n            var a = this.__createElement(\"a\")\n            a.setAttributeNS(\"http://www.w3.org/1999/xlink\", \"xlink:href\", font.href)\n            a.appendChild(element)\n            return a\n        }\n        return element\n    };\n\n    /**\n     * Fills or strokes text\n     * @param text\n     * @param x\n     * @param y\n     * @param action - stroke or fill\n     * @private\n     */\n    __applyText(text, x, y, action) {\n        var font = this.__parseFont(),\n            parent = this.__closestGroupOrSvg(),\n            textElement = this.__createElement(\"text\", {\n                \"font-family\": font.family,\n                \"font-size\": font.size,\n                \"font-style\": font.style,\n                \"font-weight\": font.weight,\n                \"text-decoration\": font.decoration,\n                \"x\": x,\n                \"y\": y,\n                \"text-anchor\": getTextAnchor(this.textAlign),\n                \"dominant-baseline\": getDominantBaseline(this.textBaseline)\n            }, true)\n\n        textElement.appendChild(this.__document.createTextNode(text))\n        this.__currentElement = textElement\n        this.__applyStyleToCurrentElement(action)\n        parent.appendChild(this.__wrapTextLink(font, textElement))\n    };\n\n    /**\n     * Creates a text element\n     * @param text\n     * @param x\n     * @param y\n     */\n    fillText(text, x, y) {\n        this.__applyText(text, x, y, \"fill\")\n    };\n\n    /**\n     * Strokes text\n     * @param text\n     * @param x\n     * @param y\n     */\n    strokeText(text, x, y) {\n        this.__applyText(text, x, y, \"stroke\")\n    };\n\n    /**\n     * No need to implement this for svg.\n     * @param text\n     * @return {TextMetrics}\n     */\n    measureText(text) {\n        this.__ctx.font = this.font\n        return this.__ctx.measureText(text)\n    };\n\n    /**\n     *  Arc command!\n     */\n    arc(x, y, radius, startAngle, endAngle, counterClockwise) {\n        // in canvas no circle is drawn if no angle is provided.\n        if (startAngle === endAngle) {\n            return\n        }\n        startAngle = startAngle % (2 * Math.PI)\n        endAngle = endAngle % (2 * Math.PI)\n        if (startAngle === endAngle) {\n            //circle time! subtract some of the angle so svg is happy (svg elliptical arc can't draw a full circle)\n            endAngle = ((endAngle + (2 * Math.PI)) - 0.001 * (counterClockwise ? -1 : 1)) % (2 * Math.PI)\n        }\n        var endX = x + radius * Math.cos(endAngle),\n            endY = y + radius * Math.sin(endAngle),\n            startX = x + radius * Math.cos(startAngle),\n            startY = y + radius * Math.sin(startAngle),\n            sweepFlag = counterClockwise ? 0 : 1,\n            largeArcFlag = 0,\n            diff = endAngle - startAngle\n\n        // https://github.com/gliffy/canvas2svg/issues/4\n        if (diff < 0) {\n            diff += 2 * Math.PI\n        }\n\n        if (counterClockwise) {\n            largeArcFlag = diff > Math.PI ? 0 : 1\n        } else {\n            largeArcFlag = diff > Math.PI ? 1 : 0\n        }\n\n        this.lineTo(startX, startY)\n        this.__addPathCommand(format(\"A {rx} {ry} {xAxisRotation} {largeArcFlag} {sweepFlag} {endX} {endY}\",\n            {\n                rx: radius,\n                ry: radius,\n                xAxisRotation: 0,\n                largeArcFlag: largeArcFlag,\n                sweepFlag: sweepFlag,\n                endX: endX,\n                endY: endY\n            }))\n\n        this.__currentPosition = {x: endX, y: endY}\n    };\n\n    /**\n     * The ellipse() method creates an elliptical arc centered at (x, y) with the radii radiusX and radiusY. The path\n     * starts at startAngle and ends at endAngle, and travels in the direction given by counterclockwise (defaulting to clockwise).\n     */\n// ellipse (x, y, radiusX, radiusY, rotation, startAngle, endAngle, counterclockwise) {\n//     // TODO -- implement\n// }\n\n    /**\n     * Generates a ClipPath from the clip command.\n     */\n    clip() {\n        var group = this.__closestGroupOrSvg(),\n            clipPath = this.__createElement(\"clipPath\"),\n            id = randomString(this.__ids),\n            newGroup = this.__createElement(\"g\")\n\n        this.__applyCurrentDefaultPath()\n        group.removeChild(this.__currentElement)\n        clipPath.setAttribute(\"id\", id)\n        clipPath.appendChild(this.__currentElement)\n\n        this.__defs.appendChild(clipPath)\n\n        //set the clip path to this group\n        group.setAttribute(\"clip-path\", format(\"url(#{id})\", {id: id}))\n\n        //clip paths can be scaled and transformed, we need to add another wrapper group to avoid later transformations\n        // to this path\n        group.appendChild(newGroup)\n\n        this.__currentElement = newGroup\n\n    };\n\n    /**\n     * Draws a canvas, image or mock context to this canvas.\n     * Note that all svg dom manipulation uses node.childNodes rather than node.children for IE support.\n     * http://www.whatwg.org/specs/web-apps/current-work/multipage/the-canvas-element.html#dom-context-2d-drawimage\n     */\n    drawImage() {\n        //convert arguments to a real array\n        var args = Array.prototype.slice.call(arguments),\n            image = args[0],\n            dx, dy, dw, dh, sx = 0, sy = 0, sw, sh, parent, svg, defs, group,\n            currentElement, svgImage, canvas, context, id\n\n        if (args.length === 3) {\n            dx = args[1]\n            dy = args[2]\n            sw = image.width\n            sh = image.height\n            dw = sw\n            dh = sh\n        } else if (args.length === 5) {\n            dx = args[1]\n            dy = args[2]\n            dw = args[3]\n            dh = args[4]\n            sw = image.width\n            sh = image.height\n        } else if (args.length === 9) {\n            sx = args[1]\n            sy = args[2]\n            sw = args[3]\n            sh = args[4]\n            dx = args[5]\n            dy = args[6]\n            dw = args[7]\n            dh = args[8]\n        } else {\n            throw new Error(\"Invalid number of arguments passed to drawImage: \" + arguments.length)\n        }\n\n        parent = this.__closestGroupOrSvg()\n        currentElement = this.__currentElement\n        var translateDirective = \"translate(\" + dx + \", \" + dy + \")\"\n        if (image instanceof ctx) {\n            //canvas2svg mock canvas context. In the future we may want to clone nodes instead.\n            //also I'm currently ignoring dw, dh, sw, sh, sx, sy for a mock context.\n            svg = image.getSvg().cloneNode(true)\n            if (svg.childNodes && svg.childNodes.length > 1) {\n                defs = svg.childNodes[0]\n                while (defs.childNodes.length) {\n                    id = defs.childNodes[0].getAttribute(\"id\")\n                    this.__ids[id] = id\n                    this.__defs.appendChild(defs.childNodes[0])\n                }\n                group = svg.childNodes[1]\n                if (group) {\n                    //save original transform\n                    var originTransform = group.getAttribute(\"transform\")\n                    var transformDirective\n                    if (originTransform) {\n                        transformDirective = originTransform + \" \" + translateDirective\n                    } else {\n                        transformDirective = translateDirective\n                    }\n                    group.setAttribute(\"transform\", transformDirective)\n                    parent.appendChild(group)\n                }\n            }\n        } else if (image.nodeName === \"CANVAS\" || image.nodeName === \"IMG\") {\n            //canvas or image\n            svgImage = this.__createElement(\"image\")\n            svgImage.setAttribute(\"width\", dw)\n            svgImage.setAttribute(\"height\", dh)\n            svgImage.setAttribute(\"preserveAspectRatio\", \"none\")\n\n            if (sx || sy || sw !== image.width || sh !== image.height) {\n                //crop the image using a temporary canvas\n                canvas = this.__document.createElement(\"canvas\")\n                canvas.width = dw\n                canvas.height = dh\n                context = canvas.getContext(\"2d\")\n                context.drawImage(image, sx, sy, sw, sh, 0, 0, dw, dh)\n                image = canvas\n            }\n            svgImage.setAttribute(\"transform\", translateDirective)\n            svgImage.setAttributeNS(\"http://www.w3.org/1999/xlink\", \"xlink:href\",\n                image.nodeName === \"CANVAS\" ? image.toDataURL() : image.getAttribute(\"src\"))\n            parent.appendChild(svgImage)\n        }\n    };\n\n    /**\n     * Generates a pattern tag\n     */\n    createPattern(image, repetition) {\n\n        let pattern = this.__document.__createElement(\"pattern\")\n        let id = randomString(this.__ids)\n        let img\n\n        pattern.setAttribute(\"id\", id)\n        pattern.setAttribute(\"width\", image.width)\n        pattern.setAttribute(\"height\", image.height)\n        if (image.nodeName === \"CANVAS\" || image.nodeName === \"IMG\") {\n            img = this.__createElement(\"image\")\n            img.setAttribute(\"width\", image.width)\n            img.setAttribute(\"height\", image.height)\n            img.setAttributeNS(\"http://www.w3.org/1999/xlink\", \"xlink:href\",\n                image.nodeName === \"CANVAS\" ? image.toDataURL() : image.getAttribute(\"src\"))\n            pattern.appendChild(img)\n            this.__defs.appendChild(pattern)\n        } else if (image instanceof ctx) {\n            pattern.appendChild(image.__root.childNodes[1])\n            this.__defs.appendChild(pattern)\n        }\n        return new CanvasPattern(pattern, this)\n    };\n\n    setLineDash(dashArray) {\n        if (dashArray && dashArray.length > 0) {\n            this.lineDash = dashArray.join(\",\")\n        } else {\n            this.lineDash = null\n        }\n    };\n\n    /**\n     * Not yet implemented\n     */\n    drawFocusRing() {\n    };\n\n    createImageData() {\n    };\n\n    getImageData() {\n    };\n\n    putImageData() {\n    };\n\n    globalCompositeOperation() {\n    };\n\n    setTransform() {\n    };\n}\n\nexport default ctx\n","const Cytoband = function (start, end, name, typestain) {\n    this.start = start\n    this.end = end\n    this.name = name\n    this.stain = 0\n\n    // Set the type, either p, n, or c\n    if (typestain === 'acen') {\n        this.type = 'c'\n    } else {\n        this.type = typestain.charAt(1)\n        if (this.type === 'p') {\n            this.stain = parseInt(typestain.substring(4))\n        }\n    }\n}\n\nexport default Cytoband\n","const _version = \"2.15.11\"\nfunction version() {\n    return _version\n}\nexport default version\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {loadFasta} from \"./fasta.js\"\nimport Cytoband from \"./cytoband.js\"\nimport {buildOptions, isDataURL} from \"../util/igvUtils.js\"\nimport {BGZip, igvxhr, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport version from \"../version.js\"\n\nconst DEFAULT_GENOMES_URL = \"https://igv.org/genomes/genomes.json\"\nconst BACKUP_GENOMES_URL = \"https://s3.amazonaws.com/igv.org.genomes/genomes.json\"\n\nconst splitLines = StringUtils.splitLines\n\nconst GenomeUtils = {\n\n    loadGenome: async function (options) {\n\n        const cytobandUrl = options.cytobandURL\n        const aliasURL = options.aliasURL\n        const sequence = await loadFasta(options)\n\n        let aliases\n        if (aliasURL) {\n            aliases = await loadAliases(aliasURL, sequence.config)\n        }\n\n        const genome = new Genome(options, sequence, aliases)\n\n        // Delay loading cytbands untils after genome initialization to use chromosome aliases (1 vs chr1, etc).\n        if (cytobandUrl) {\n            genome.cytobands = await loadCytobands(cytobandUrl, sequence.config, genome)\n        }\n\n        return genome\n    },\n\n    initializeGenomes: async function (config) {\n\n        if (!GenomeUtils.KNOWN_GENOMES) {\n\n            const table = {}\n\n            // Get default genomes\n            if (config.loadDefaultGenomes !== false) {\n                try {\n                    const url = DEFAULT_GENOMES_URL + `?randomSeed=${Math.random().toString(36)}&version=${version()}`  // prevent caching\n                    const jsonArray = await igvxhr.loadJson(url, {timeout: 5000})\n                    processJson(jsonArray)\n                } catch (e) {\n                    console.error(e)\n                    try {\n                        const url = BACKUP_GENOMES_URL + `?randomSeed=${Math.random().toString(36)}&version=${version()}`  // prevent caching\n                        const jsonArray = await igvxhr.loadJson(url, {})\n                        processJson(jsonArray)\n                    } catch (e) {\n                        console.error(e)\n                        console.warn(\"Errors loading default genome definitions.\")\n                    }\n                }\n            }\n\n            // Add user-defined genomes\n            const genomeList = config.genomeList || config.genomes\n            if (genomeList) {\n                if (typeof genomeList === 'string') {\n                    const jsonArray = await igvxhr.loadJson(genomeList, {})\n                    processJson(jsonArray)\n                } else {\n                    processJson(genomeList)\n                }\n            }\n\n            GenomeUtils.KNOWN_GENOMES = table\n\n            function processJson(jsonArray) {\n                jsonArray.forEach(function (json) {\n                    table[json.id] = json\n                })\n                return table\n            }\n        }\n    },\n\n    isWholeGenomeView: function (chr) {\n        return 'all' === chr.toLowerCase()\n    },\n\n    // Expand a genome id to a reference object, if needed\n    expandReference: function (alert, idOrConfig) {\n\n        // idOrConfig might be json\n        if (StringUtils.isString(idOrConfig) && idOrConfig.startsWith(\"{\")) {\n            try {\n                idOrConfig = JSON.parse(idOrConfig)\n            } catch (e) {\n                // Apparently its not json,  could be an ID starting with \"{\".  Unusual but legal.\n            }\n        }\n\n        let genomeID\n        if (StringUtils.isString(idOrConfig)) {\n            genomeID = idOrConfig\n        } else if (idOrConfig.genome) {\n            genomeID = idOrConfig.genome\n        } else if (idOrConfig.id !== undefined && idOrConfig.fastaURL === undefined) {\n            // Backward compatibility\n            genomeID = idOrConfig.id\n        }\n\n        if (genomeID) {\n            const knownGenomes = GenomeUtils.KNOWN_GENOMES\n            const reference = knownGenomes[genomeID]\n            if (!reference) {\n                alert.present(new Error(`Unknown genome id: ${genomeID}`), undefined)\n            }\n            return reference\n        } else {\n            return idOrConfig\n        }\n    }\n}\n\n\nclass Genome {\n\n    constructor(config, sequence, aliases) {\n\n        this.config = config\n        this.id = config.id || generateGenomeID(config)\n        this.sequence = sequence\n        this.chromosomeNames = sequence.chromosomeNames\n        this.chromosomes = sequence.chromosomes  // An object (functions as a dictionary)\n        this.featureDB = new Map()   // Hash of name -> feature, used for search function.\n\n        this.wholeGenomeView = config.wholeGenomeView === undefined || config.wholeGenomeView\n        if (this.wholeGenomeView && Object.keys(sequence.chromosomes).length > 1) {\n            constructWG(this, config)\n        } else {\n            this.wgChromosomeNames = sequence.chromosomeNames\n        }\n\n        /**\n         * Return the official chromosome name for the (possibly) alias.  Deals with\n         * 1 <-> chr1,  chrM <-> MT,  IV <-> chr4, etc.\n         * @param str\n         */\n        var chrAliasTable = {},\n            self = this\n\n\n        // The standard mappings\n        chrAliasTable[\"all\"] = \"all\"\n        this.chromosomeNames.forEach(function (name) {\n            var alias = name.startsWith(\"chr\") ? name.substring(3) : \"chr\" + name\n            chrAliasTable[alias.toLowerCase()] = name\n            if (name === \"chrM\") chrAliasTable[\"mt\"] = \"chrM\"\n            if (name === \"MT\") chrAliasTable[\"chrm\"] = \"MT\"\n            chrAliasTable[name.toLowerCase()] = name\n        })\n\n        // Custom mappings\n        if (aliases) {\n            aliases.forEach(function (array) {\n                // Find the official chr name\n                var defName, i\n\n                for (i = 0; i < array.length; i++) {\n                    if (self.chromosomes[array[i]]) {\n                        defName = array[i]\n                        break\n                    }\n                }\n\n                if (defName) {\n                    array.forEach(function (alias) {\n                        if (alias !== defName) {\n                            chrAliasTable[alias.toLowerCase()] = defName\n                            chrAliasTable[alias] = defName      // Should not be needed\n                        }\n                    })\n                }\n\n            })\n        }\n\n        this.chrAliasTable = chrAliasTable\n\n    }\n\n    showWholeGenomeView() {\n        return this.config.wholeGenomeView !== false\n    }\n\n    toJSON() {\n        return Object.assign({}, this.config, {tracks: undefined})\n    }\n\n    getInitialLocus() {\n\n    }\n\n    getHomeChromosomeName() {\n        if (this.showWholeGenomeView() && this.chromosomes.hasOwnProperty(\"all\")) {\n            return \"all\"\n        } else {\n            return this.chromosomeNames[0]\n\n        }\n    }\n\n    getChromosomeName(str) {\n        const chr = str ? this.chrAliasTable[str.toLowerCase()] : str\n        return chr ? chr : str\n    }\n\n    getChromosome(chr) {\n        chr = this.getChromosomeName(chr)\n        return this.chromosomes[chr]\n    }\n\n    getCytobands(chr) {\n        return this.cytobands ? this.cytobands[chr] : null\n    }\n\n    getLongestChromosome() {\n\n        var longestChr,\n            chromosomes = this.chromosomes\n        for (let key in chromosomes) {\n            if (chromosomes.hasOwnProperty(key)) {\n                var chr = chromosomes[key]\n                if (longestChr === undefined || chr.bpLength > longestChr.bpLength) {\n                    longestChr = chr\n                }\n            }\n            return longestChr\n        }\n    }\n\n    getChromosomes() {\n        return this.chromosomes\n    }\n\n    /**\n     * Return the genome coordinate in kb for the give chromosome and position.\n     * NOTE: This might return undefined if the chr is filtered from whole genome view.\n     */\n    getGenomeCoordinate(chr, bp) {\n\n        var offset = this.getCumulativeOffset(chr)\n        if (offset === undefined) return undefined\n\n        return offset + bp\n    }\n\n    /**\n     * Return the chromosome and coordinate in bp for the given genome coordinate\n     */\n    getChromosomeCoordinate(genomeCoordinate) {\n\n        if (this.cumulativeOffsets === undefined) {\n            this.cumulativeOffsets = computeCumulativeOffsets.call(this)\n        }\n\n        let lastChr = undefined\n        let lastCoord = 0\n        for (let name of this.wgChromosomeNames) {\n\n            const cumulativeOffset = this.cumulativeOffsets[name]\n            if (cumulativeOffset > genomeCoordinate) {\n                const position = genomeCoordinate - lastCoord\n                return {chr: lastChr, position: position}\n            }\n            lastChr = name\n            lastCoord = cumulativeOffset\n        }\n\n        // If we get here off the end\n        return {chr: this.wgChromosomeNames[this.wgChromosomeNames.length - 1], position: 0}\n\n    };\n\n\n    /**\n     * Return the offset in genome coordinates (kb) of the start of the given chromosome\n     * NOTE:  This might return undefined if the chromosome is filtered from whole genome view.\n     */\n    getCumulativeOffset(chr) {\n\n        if (this.cumulativeOffsets === undefined) {\n            this.cumulativeOffsets = computeCumulativeOffsets.call(this)\n        }\n\n        const queryChr = this.getChromosomeName(chr)\n        return this.cumulativeOffsets[queryChr]\n\n        function computeCumulativeOffsets() {\n\n            let self = this\n            let acc = {}\n            let offset = 0\n            for (let name of self.wgChromosomeNames) {\n\n                acc[name] = Math.floor(offset)\n\n                const chromosome = self.getChromosome(name)\n\n                offset += chromosome.bpLength\n            }\n\n            return acc\n        }\n    }\n\n    /**\n     * Return the nominal genome length, this is the length of the main chromosomes (no scaffolds, etc).\n     */\n    getGenomeLength() {\n\n        let self = this\n\n        if (!this.bpLength) {\n            let bpLength = 0\n            self.wgChromosomeNames.forEach(function (cname) {\n                let c = self.chromosomes[cname]\n                bpLength += c.bpLength\n            })\n            this.bpLength = bpLength\n        }\n        return this.bpLength\n    }\n\n    async getSequence(chr, start, end) {\n        chr = this.getChromosomeName(chr)\n        return this.sequence.getSequence(chr, start, end)\n    }\n\n    addFeaturesToDB(featureList, config) {\n\n        const insertFeature = (name, feature) => {\n            const current = this.featureDB.get(name)\n            if (current) {\n                feature = (feature.end - feature.start) > (current.end - current.start) ? feature : current\n\n            }\n            this.featureDB.set(name, feature)\n        }\n\n        for (let feature of featureList) {\n            if (feature.name) {\n                insertFeature(feature.name.toUpperCase(), feature)\n            }\n            if (feature.gene && feature.gene.name) {\n                insertFeature(feature.gene.name.toUpperCase(), feature)\n            }\n\n            if (config.searchableFields) {\n                for (let f of config.searchableFields) {\n                    const value = feature.getAttributeValue(f)\n                    if (value) {\n                        if (value.indexOf(\" \") > 0) {\n                            insertFeature(value.replaceAll(\" \", \"+\").toUpperCase(), feature)\n                        } else {\n                            insertFeature(value.toUpperCase(), feature)\n                        }\n                    }\n                }\n            }\n        }\n    }\n}\n\nasync function loadCytobands(cytobandUrl, config, genome) {\n\n    let data\n    if (isDataURL(cytobandUrl)) {\n        const plain = BGZip.decodeDataURI(cytobandUrl)\n        data = \"\"\n        const len = plain.length\n        for (let i = 0; i < len; i++) {\n            data += String.fromCharCode(plain[i])\n        }\n    } else {\n        data = await igvxhr.loadString(cytobandUrl, buildOptions(config))\n    }\n\n    // var bands = [],\n    //     lastChr,\n    //     n = 0,\n    //     c = 1,\n    //\n    //     len = lines.length,\n    const cytobands = {}\n    let lastChr\n    let bands = []\n    const lines = splitLines(data)\n    for (let line of lines) {\n        var tokens = line.split(\"\\t\")\n        var chr = genome.getChromosomeName(tokens[0])\n        if (!lastChr) lastChr = chr\n\n        if (chr !== lastChr) {\n            cytobands[lastChr] = bands\n            bands = []\n            lastChr = chr\n        }\n\n        if (tokens.length === 5) {\n            //10\t0\t3000000\tp15.3\tgneg\n            var start = parseInt(tokens[1])\n            var end = parseInt(tokens[2])\n            var name = tokens[3]\n            var stain = tokens[4]\n            bands.push(new Cytoband(start, end, name, stain))\n        }\n    }\n\n    return cytobands\n}\n\nfunction loadAliases(aliasURL, config) {\n\n    return igvxhr.loadString(aliasURL, buildOptions(config))\n\n        .then(function (data) {\n\n            var lines = splitLines(data),\n                aliases = []\n\n            lines.forEach(function (line) {\n                if (!line.startsWith(\"#\") && line.length > 0) aliases.push(line.split(\"\\t\"))\n            })\n\n            return aliases\n        })\n\n}\n\nfunction constructWG(genome, config) {\n\n    let wgChromosomes\n    if (config.chromosomeOrder) {\n        if (Array.isArray(config.chromosomeOrder)) {\n            genome.wgChromosomeNames = config.chromosomeOrder\n        } else {\n            genome.wgChromosomeNames = config.chromosomeOrder.split(',').map(nm => nm.trim())\n        }\n        wgChromosomes = genome.wgChromosomeNames.map(nm => genome.chromosomes[nm]).filter(chr => chr !== undefined)\n\n    } else {\n\n        // Trim small chromosomes.\n        const lengths = Object.keys(genome.chromosomes).map(key => genome.chromosomes[key].bpLength)\n        const median = lengths.reduce((a, b) => Math.max(a, b))\n        const threshold = median / 50\n        wgChromosomes = Object.values(genome.chromosomes).filter(chr => chr.bpLength > threshold)\n\n        // Sort chromosomes.  First segregate numeric and alpha names, sort numeric, leave alpha as is\n        const numericChromosomes = wgChromosomes.filter(chr => isDigit(chr.name.replace('chr', '')))\n        const alphaChromosomes = wgChromosomes.filter(chr => !isDigit(chr.name.replace('chr', '')))\n        numericChromosomes.sort((a, b) => Number.parseInt(a.name.replace('chr', '')) - Number.parseInt(b.name.replace('chr', '')))\n\n        const wgChromosomeNames = numericChromosomes.map(chr => chr.name)\n        for (let chr of alphaChromosomes) {\n            wgChromosomeNames.push(chr.name)\n        }\n        genome.wgChromosomeNames = wgChromosomeNames\n    }\n\n\n    // Compute psuedo-chromosome \"all\"\n    const l = wgChromosomes.reduce((accumulator, currentValue) => accumulator += currentValue.bpLength, 0)\n    genome.chromosomes[\"all\"] = {\n        name: \"all\",\n        bpLength: l\n    }\n\n    function isDigit(val) {\n        return /^\\d+$/.test(val)\n    }\n\n}\n\nfunction generateGenomeID(config) {\n    if (config.id !== undefined) {\n        return config.id\n    } else if (config.fastaURL && StringUtils.isString(config.fastaURL)) {\n        return config.fastaURL\n    } else if (config.fastaURL && config.fastaURL.name) {\n        return config.fastaURL.name\n    } else {\n        return (\"0000\" + (Math.random() * Math.pow(36, 4) << 0).toString(36)).slice(-4)\n    }\n}\n\nexport default GenomeUtils\n","/**\n * Created by dat on 9/16/16.\n */\n\nimport $ from \"./vendor/jquery-3.3.1.slim.js\"\nimport {Popover} from '../node_modules/igv-ui/dist/igv-ui.js'\nimport Viewport from \"./viewport.js\"\nimport {FileUtils} from \"../node_modules/igv-utils/src/index.js\"\nimport {DOMUtils} from \"../node_modules/igv-ui/dist/igv-ui.js\"\nimport C2S from \"./canvas2svg.js\"\nimport GenomeUtils from \"./genome/genome.js\"\nimport {bppFeatureFetchThreshold} from \"./sequenceTrack.js\"\n\nconst NOT_LOADED_MESSAGE = 'Error loading track data'\n\nlet mouseDownCoords\nlet lastClickTime = 0\nlet lastHoverUpdateTime = 0\nlet popupTimerID\n\nclass TrackViewport extends Viewport {\n\n    constructor(trackView, viewportColumn, referenceFrame, width) {\n        super(trackView, viewportColumn, referenceFrame, width)\n    }\n\n    initializationHelper() {\n\n        this.$spinner = $('<div>', {class: 'igv-loading-spinner-container'})\n        this.$viewport.append(this.$spinner)\n        this.$spinner.append($('<div>'))\n\n        const track = this.trackView.track\n        if ('sequence' !== track.type) {\n            this.$zoomInNotice = this.createZoomInNotice(this.$viewport)\n        }\n\n        if (track.name && \"sequence\" !== track.id) {\n            this.$trackLabel = $('<div class=\"igv-track-label\">')\n            this.$viewport.append(this.$trackLabel)\n            this.setTrackLabel(track.name)\n            if (false === this.browser.trackLabelsVisible) {\n                this.$trackLabel.hide()\n            }\n        }\n\n        this.stopSpinner()\n        this.addMouseHandlers()\n    }\n\n    setContentHeight(contentHeight) {\n        super.setContentHeight(contentHeight)\n        if (this.featureCache) this.featureCache.redraw = true\n    }\n\n    setTrackLabel(label) {\n\n        this.$trackLabel.empty()\n        this.$trackLabel.html(label)\n\n        const txt = this.$trackLabel.text()\n        this.$trackLabel.attr('title', txt)\n    }\n\n    startSpinner() {\n        this.$spinner.show()\n    }\n\n    stopSpinner() {\n        if (this.$spinner) {\n            this.$spinner.hide()\n        }\n    }\n\n    /**\n     * Test to determine if we are zoomed in far enough to see features. Applicable to tracks with visibility windows.\n     *\n     * As a side effect the viewports canvas is removed if zoomed out.\n     *\n     * @returns {boolean} true if we are zoomed in past visibility window, false otherwise\n     */\n    checkZoomIn() {\n\n        const zoomedOutOfWindow = () => {\n            if (this.referenceFrame.chr.toLowerCase() === \"all\" && !this.trackView.track.supportsWholeGenome) {\n                return true\n            } else {\n                const visibilityWindow = this.trackView.track.visibilityWindow\n                return (\n                    visibilityWindow !== undefined && visibilityWindow > 0 &&\n                    (this.referenceFrame.bpPerPixel * this.$viewport.width() > visibilityWindow))\n            }\n        }\n\n        if (this.trackView.track && \"sequence\" === this.trackView.track.type && this.referenceFrame.bpPerPixel > bppFeatureFetchThreshold) {\n            $(this.canvas).remove()\n            this.canvas = undefined\n            //this.featureCache = undefined\n            return false\n        }\n\n        if (!(this.viewIsReady())) {\n            return false\n        }\n\n\n        if (zoomedOutOfWindow()) {\n\n            // Out of visibility window\n            if (this.canvas) {\n                $(this.canvas).remove()\n                this.canvas = undefined\n                //this.featureCache = undefined\n            }\n            if (this.trackView.track.autoHeight) {\n                const minHeight = this.trackView.minHeight || 0\n                this.setContentHeight(minHeight)\n            }\n            if (this.$zoomInNotice) {\n                this.$zoomInNotice.show()\n            }\n            return false\n        } else {\n            if (this.$zoomInNotice) {\n                this.$zoomInNotice.hide()\n            }\n            return true\n        }\n\n    }\n\n    /**\n     * Adjust the canvas to the current genomic state.\n     */\n    shift() {\n        const referenceFrame = this.referenceFrame\n        if (this.canvas &&\n            this.canvas._data &&\n            this.canvas._data.referenceFrame.chr === this.referenceFrame.chr &&\n            this.canvas._data.bpPerPixel === referenceFrame.bpPerPixel) {\n            const pixelOffset = Math.round((this.canvas._data.bpStart - referenceFrame.start) / referenceFrame.bpPerPixel)\n            this.canvas.style.left = pixelOffset + \"px\"\n        }\n    }\n\n    /**\n     * Set the content top of the current view.  This is triggered by scrolling.   If the current canvas extent is not\n     * sufficient to cover the new vertical range repaint.\n     *\n     * @param contentTop - the \"top\" property of the virtual content div, 0 unless track is scrolled vertically\n     *\n     *\n     */\n    setTop(contentTop) {\n\n        super.setTop(contentTop)\n\n        if (!this.canvas) {\n            this.repaint()\n        } else {\n            // See if currently painted canvas covers the vertical range of the viewport.  If not repaint\n            const h = this.$viewport.height()\n            const vt = contentTop + this.canvas._data.pixelTop\n            const vb = vt + this.canvas._data.pixelHeight\n            if (vt > 0 || vb < h) {\n                this.repaint()\n            }\n        }\n\n        // Now offset backing canvas to align with the contentTop visual offset.\n        let offset = contentTop + this.canvas._data.pixelTop\n        this.canvas.style.top = `${offset}px`\n    }\n\n    async loadFeatures() {\n\n        const referenceFrame = this.referenceFrame\n        const chr = referenceFrame.chr\n\n        // Expand the requested range so we can pan a bit without reloading.  But not beyond chromosome bounds\n        const chrLength = this.browser.genome.getChromosome(chr).bpLength\n        const pixelWidth = this.$viewport.width()// * 3;\n        const bpWidth = pixelWidth * referenceFrame.bpPerPixel\n        const bpStart = Math.floor(Math.max(0, referenceFrame.start - bpWidth))\n        const bpEnd = Math.ceil(Math.min(chrLength, referenceFrame.start + bpWidth + bpWidth))  // Add one screen width to end\n\n        if (this.loading && this.loading.start === bpStart && this.loading.end === bpEnd) {\n            return undefined\n        }\n        this.loading = {start: bpStart, end: bpEnd}\n        this.startSpinner()\n\n        try {\n            const track = this.trackView.track\n            const features = await this.getFeatures(track, chr, bpStart, bpEnd, referenceFrame.bpPerPixel)\n            if (features) {\n                let roiFeatures = []\n                if (track.roiSets && track.roiSets.length > 0) {\n                    for (let roiSet of track.roiSets) {\n                        const features = await roiSet.getFeatures(chr, bpStart, bpEnd, referenceFrame.bpPerPixel)\n                        roiFeatures.push({track: roiSet, features})\n                    }\n                }\n\n                const mr = track && (\"wig\" === track.type || \"merged\" === track.type)   // wig tracks are potentially multiresolution (e.g. bigwig)\n                this.featureCache = new FeatureCache(chr, bpStart, bpEnd, referenceFrame.bpPerPixel, features, roiFeatures, mr)\n                this.loading = false\n                this.hideMessage()\n                this.stopSpinner()\n                return this.featureCache\n            }\n        } catch (error) {\n            // Track might have been removed during load\n            if (this.trackView && this.trackView.disposed !== true) {\n                this.showMessage(NOT_LOADED_MESSAGE)\n                this.browser.alert.present(error)\n                console.error(error)\n            }\n        } finally {\n            this.loading = false\n            this.stopSpinner()\n        }\n    }\n\n    /**\n     * Compute the genomic extent and needed pixelWidth to repaint the canvas for the current genomic state.\n     * Normally the canvas is size 3X the width of the viewport, however there is no left-right panning for WGV so\n     * canvas width is viewport width.\n     * @returns {{bpEnd: *, pixelWidth: (*|number), bpStart: number}}\n     */\n    repaintDimensions() {\n        const isWGV = GenomeUtils.isWholeGenomeView(this.referenceFrame.chr)\n        const pixelWidth = isWGV ? this.$viewport.width() : 3 * this.$viewport.width()\n        const bpPerPixel = this.referenceFrame.bpPerPixel\n        const bpStart = this.referenceFrame.start - (isWGV ? 0 : pixelWidth / 3 * bpPerPixel)\n        const bpEnd = this.referenceFrame.end + (isWGV ? 0 : pixelWidth / 3 * bpPerPixel)\n        return {\n            bpStart, bpEnd, pixelWidth\n        }\n    }\n\n    /**\n     * Repaint the canvas using the cached features\n     *\n     */\n    repaint() {\n\n        if (undefined === this.featureCache) {\n            return\n        }\n\n        const {features, roiFeatures} = this.featureCache\n\n        // Canvas dimensions.\n        // For deep tracks we paint a canvas == 3*viewportHeight centered on the current vertical scroll position\n        const {bpStart, bpEnd, pixelWidth} = this.repaintDimensions()\n        const viewportHeight = this.$viewport.height()\n        const contentHeight = this.getContentHeight()\n        const maxHeight = roiFeatures ? Math.max(contentHeight, viewportHeight) : contentHeight  // Need to fill viewport for ROIs.\n        const pixelHeight = Math.min(maxHeight, 3 * viewportHeight)\n        if (0 === pixelWidth || 0 === pixelHeight) {\n            if (this.canvas) {\n                $(this.canvas).remove()\n            }\n            return\n        }\n        const pixelTop = Math.max(0, -this.contentTop - Math.floor(pixelHeight / 3))\n\n        const bpPerPixel = this.referenceFrame.bpPerPixel\n        const pixelXOffset = Math.round((bpStart - this.referenceFrame.start) / bpPerPixel)\n        const canvasTop = (this.contentTop || 0) + pixelTop\n        const newCanvas = document.createElement('canvas')//  $('<canvas class=\"igv-canvas\">').get(0)\n        newCanvas.style.position = 'relative'\n        newCanvas.style.display = 'block'\n        newCanvas.style.width = pixelWidth + \"px\"\n        newCanvas.style.height = pixelHeight + \"px\"\n        newCanvas.style.left = pixelXOffset + \"px\"\n        newCanvas.style.top = canvasTop + \"px\"\n\n        // Always use high DPI if in \"FILL\" display mode, otherwise use track setting;\n        const devicePixelRatio = (\"FILL\" === this.trackView.track.displayMode || this.trackView.track.supportHiDPI !== false) ?\n            window.devicePixelRatio : 1\n        newCanvas.width = devicePixelRatio * pixelWidth\n        newCanvas.height = devicePixelRatio * pixelHeight\n\n        const ctx = newCanvas.getContext(\"2d\")\n        ctx.scale(devicePixelRatio, devicePixelRatio)\n        ctx.translate(0, -pixelTop)\n\n        const drawConfiguration =\n            {\n                context: ctx,\n                pixelXOffset,\n                pixelWidth,\n                pixelHeight,\n                pixelTop,\n                bpStart,\n                bpEnd: bpEnd,\n                bpPerPixel,\n                referenceFrame: this.referenceFrame,\n                selection: this.selection,\n                viewport: this,\n                viewportWidth: this.$viewport.width()\n            }\n\n        this.draw(drawConfiguration, features, roiFeatures)\n\n        if (this.canvas) {\n            $(this.canvas).remove()\n        }\n        newCanvas._data = drawConfiguration\n        this.canvas = newCanvas\n        this.$viewport.append($(newCanvas))\n\n    }\n\n    refresh() {\n        if (!(this.canvas && this.featureCache)) return\n\n        const drawConfiguration = this.canvas._data\n        drawConfiguration.context.clearRect(0, 0, this.canvas.width, this.canvas.height)\n        const {features, roiFeatures} = this.featureCache\n        this.draw(drawConfiguration, features, roiFeatures)\n    }\n\n    /**\n     * Draw the associated track.\n     *\n     * @param drawConfiguration\n     * @param features\n     * @param roiFeatures\n     */\n    draw(drawConfiguration, features, roiFeatures) {\n\n        if (features) {\n            drawConfiguration.features = features\n            this.trackView.track.draw(drawConfiguration)\n        }\n        if (roiFeatures && roiFeatures.length > 0) {\n            for (let r of roiFeatures) {\n                drawConfiguration.features = r.features\n                r.track.draw(drawConfiguration)\n            }\n        }\n    }\n\n    containsPosition(chr, position) {\n        if (this.referenceFrame.chr === chr && position >= this.referenceFrame.start) {\n            return position <= this.referenceFrame.calculateEnd(this.getWidth())\n        } else {\n            return false\n        }\n    }\n\n    isLoading() {\n        return this.loading\n    }\n\n    savePNG() {\n\n        if (!this.canvas) return\n\n        const canvasMetadata = this.canvas._data\n        const canvasTop = canvasMetadata ? canvasMetadata.pixelTop : 0\n        const devicePixelRatio = window.devicePixelRatio\n        const w = this.$viewport.width() * devicePixelRatio\n        const h = this.$viewport.height() * devicePixelRatio\n        const x = -$(this.canvas).position().left * devicePixelRatio\n        const y = (-this.contentTop - canvasTop) * devicePixelRatio\n\n        const ctx = this.canvas.getContext(\"2d\")\n        const imageData = ctx.getImageData(x, y, w, h)\n        const exportCanvas = document.createElement('canvas')\n        const exportCtx = exportCanvas.getContext('2d')\n        exportCanvas.width = imageData.width\n        exportCanvas.height = imageData.height\n        exportCtx.putImageData(imageData, 0, 0)\n\n        // filename = this.trackView.track.name + \".png\";\n        const filename = (this.$trackLabel.text() ? this.$trackLabel.text() : \"image\") + \".png\"\n        const data = exportCanvas.toDataURL(\"image/png\")\n        FileUtils.download(filename, data)\n    }\n\n    saveSVG() {\n\n        const marginTop = 32\n        const marginLeft = 32\n\n        let {width, height} = this.browser.columnContainer.getBoundingClientRect()\n\n        const h_render = 8000\n\n        const config =\n            {\n\n                width,\n                height: h_render,\n\n                backdropColor: 'white',\n\n                multiLocusGap: 0,\n\n                viewbox:\n                    {\n                        x: 0,\n                        y: 0,\n                        width,\n                        height: h_render\n                    }\n\n            }\n\n        const context = new C2S(config)\n\n        const delta =\n            {\n                deltaX: marginLeft,\n                deltaY: marginTop\n            }\n\n        this.renderViewportToSVG(context, delta)\n\n        // reset height to trim away unneeded svg canvas real estate. Yes, a bit of a hack.\n        context.setHeight(height)\n\n        const str = (this.trackView.track.name || this.trackView.track.id).replace(/\\W/g, '')\n        const index = this.browser.referenceFrameList.indexOf(this.referenceFrame)\n\n        const svg = context.getSerializedSvg(true)\n        const data = URL.createObjectURL(new Blob([svg], {type: \"application/octet-stream\"}))\n\n        const id = `${str}_referenceFrame_${index}_guid_${DOMUtils.guid()}`\n        FileUtils.download(`${id}.svg`, data)\n\n    }\n\n    // called by trackView.renderSVGContext() when rendering\n    // entire browser as SVG\n\n    renderViewportToSVG(context, {deltaX, deltaY}) {\n\n        if (this.$zoomInNotice && this.$zoomInNotice.is(\":visible\")) {\n            return\n        }\n\n        const {width, height} = this.$viewport.get(0).getBoundingClientRect()\n\n        const str = (this.trackView.track.name || this.trackView.track.id).replace(/\\W/g, '')\n        const index = this.browser.referenceFrameList.indexOf(this.referenceFrame)\n        const id = `${str}_referenceFrame_${index}_guid_${DOMUtils.guid()}`\n        this.drawSVGWithContext(context, width, height, id, deltaX, deltaY + this.contentTop, -this.contentTop)\n\n    }\n\n    renderSVGContext(context, {deltaX, deltaY}) {\n\n        this.renderViewportToSVG(context, {deltaX, deltaY})\n\n        if (this.$zoomInNotice && this.$zoomInNotice.is(\":visible\")) {\n            return\n        }\n\n        if (this.$trackLabel && true === this.browser.trackLabelsVisible) {\n            const {x, y, width, height} = DOMUtils.relativeDOMBBox(this.$viewport.get(0), this.$trackLabel.get(0))\n            this.renderTrackLabelSVG(context, deltaX + x, deltaY + y, width, height)\n        }\n\n    }\n\n    // render track label element called from renderSVGContext()\n    renderTrackLabelSVG(context, tx, ty, width, height) {\n\n        const str = (this.trackView.track.name || this.trackView.track.id).replace(/\\W/g, '')\n        const id = `${str}_track_label_guid_${DOMUtils.guid()}`\n\n        context.saveWithTranslationAndClipRect(id, tx, ty, width, height, 0)\n\n        context.fillStyle = \"white\"\n        context.fillRect(0, 0, width, height)\n\n        context.font = \"12px Arial\"\n        context.fillStyle = 'rgb(68, 68, 68)'\n\n        const {width: stringWidth} = context.measureText(this.$trackLabel.text())\n        const dx = 0.25 * (width - stringWidth)\n        const dy = 0.7 * (height - 12)\n        context.fillText(this.$trackLabel.text(), dx, height - dy)\n\n        context.strokeStyle = 'rgb(68, 68, 68)'\n        context.strokeRect(0, 0, width, height)\n\n        context.restore()\n\n    }\n\n    // called by renderSVGContext()\n    drawSVGWithContext(context, width, height, id, x, y, yClipOffset) {\n\n        context.saveWithTranslationAndClipRect(id, x, y, width, height, yClipOffset)\n\n        let {start, bpPerPixel} = this.referenceFrame\n\n        const config =\n            {\n                context,\n                viewport: this,\n                referenceFrame: this.referenceFrame,\n                top: yClipOffset,\n                pixelTop: yClipOffset,\n                pixelWidth: width,\n                pixelHeight: height,\n                bpStart: start,\n                bpEnd: start + (width * bpPerPixel),\n                bpPerPixel,\n                viewportWidth: width,\n                selection: this.selection\n            }\n\n        const features = this.featureCache ? this.featureCache.features : undefined\n        const roiFeatures = this.featureCache ? this.featureCache.roiFeatures : undefined\n        this.draw(config, features, roiFeatures)\n\n        context.restore()\n\n    }\n\n    get cachedFeatures() {\n        return this.featureCache ? this.featureCache.features : []\n    }\n\n    clearCache() {\n        this.featureCache = undefined\n        if (this.canvas) this.canvas._data = undefined\n    }\n\n    async getFeatures(track, chr, start, end, bpPerPixel) {\n        if (this.featureCache && this.featureCache.containsRange(chr, start, end, bpPerPixel)) {\n            return this.featureCache.features\n        } else if (typeof track.getFeatures === \"function\") {\n            const features = await track.getFeatures(chr, start, end, bpPerPixel, this)\n            this.checkContentHeight(features)\n            return features\n        } else {\n            return undefined\n        }\n    }\n\n    needsRepaint() {\n\n        if (!this.canvas) return true\n\n        const data = this.canvas._data\n        return !data ||\n            this.referenceFrame.start < data.bpStart ||\n            this.referenceFrame.end > data.bpEnd ||\n            this.referenceFrame.chr !== data.referenceFrame.chr ||\n            this.referenceFrame.bpPerPixel != data.bpPerPixel\n    }\n\n    needsReload() {\n        if (!this.featureCache) return true\n        const {chr, bpPerPixel} = this.referenceFrame\n        const {bpStart, bpEnd} = this.repaintDimensions()\n        return (!this.featureCache.containsRange(chr, bpStart, bpEnd, bpPerPixel))\n    }\n\n    createZoomInNotice($parent) {\n\n        const $container = $('<div>', {class: 'igv-zoom-in-notice-container'})\n        $parent.append($container)\n\n        const $e = $('<div>')\n        $container.append($e)\n\n        $e.text('Zoom in to see features')\n\n        $container.hide()\n\n        return $container\n    }\n\n    viewIsReady() {\n        return this.browser && this.browser.referenceFrameList && this.referenceFrame\n    }\n\n    addMouseHandlers() {\n\n        const viewport = this.$viewport.get(0)\n\n        this.addViewportContextMenuHandler(viewport)\n\n        // Mouse down\n        const md = (event) => {\n            this.enableClick = true\n            this.browser.mouseDownOnViewport(event, this)\n            mouseDownCoords = DOMUtils.pageCoordinates(event)\n        }\n        viewport.addEventListener('mousedown', md)\n        viewport.addEventListener('touchstart', md)\n\n        // Mouse up\n        const mu = (event) => {\n            // Any mouse up cancels drag and scrolling\n            if (this.browser.dragObject || this.browser.isScrolling) {\n                this.browser.cancelTrackPan()\n                // event.preventDefault();\n                // event.stopPropagation();\n                this.enableClick = false   // Until next mouse down\n            } else {\n                this.browser.cancelTrackPan()\n                this.browser.endTrackDrag()\n            }\n        }\n        viewport.addEventListener('mouseup', mu)\n        viewport.addEventListener('touchend', mu)\n\n        // Mouse move\n        if (typeof this.trackView.track.hoverText === 'function') {\n            viewport.addEventListener('mousemove', (event => {\n                if (event.buttons === 0 && (Date.now() - lastHoverUpdateTime > 100)) {\n                    lastHoverUpdateTime = Date.now()\n                    const clickState = this.createClickState(event)\n                    if (clickState) {\n                        const tooltip = this.trackView.track.hoverText(clickState)\n                        if (tooltip) {\n                            this.$viewport[0].setAttribute(\"title\", tooltip)\n                        } else {\n                            this.$viewport[0].removeAttribute(\"title\")\n                        }\n                    }\n                }\n            }))\n        }\n\n        this.addViewportClickHandler(this.$viewport.get(0))\n\n        if (this.trackView.track.name && \"sequence\" !== this.trackView.track.config.type) {\n            this.addTrackLabelClickHandler(this.$trackLabel.get(0))\n        }\n\n    }\n\n    addViewportContextMenuHandler(viewport) {\n\n        viewport.addEventListener('contextmenu', (event) => {\n\n            // Ignore if we are doing a drag.  This can happen with touch events.\n            if (this.browser.dragObject) {\n                return false\n            }\n\n            const clickState = this.createClickState(event)\n\n            if (undefined === clickState) {\n                return false\n            }\n\n            event.preventDefault()\n\n            // Track specific items\n            let menuItems = []\n            if (typeof this.trackView.track.contextMenuItemList === \"function\") {\n                const trackMenuItems = this.trackView.track.contextMenuItemList(clickState)\n                if (trackMenuItems) {\n                    menuItems = trackMenuItems\n                }\n            }\n\n            // Add items common to all tracks\n            if (menuItems.length > 0) {\n                menuItems.push({label: $('<HR>')})\n            }\n\n            menuItems.push({label: 'Save Image (PNG)', click: () => this.savePNG()})\n            menuItems.push({label: 'Save Image (SVG)', click: () => this.saveSVG()})\n\n            this.browser.menuPopup.presentTrackContextMenu(event, menuItems)\n        })\n\n    }\n\n\n    addViewportClickHandler(viewport) {\n\n        viewport.addEventListener('click', (event) => {\n\n            if (this.enableClick && this.canvas) {\n                if (3 === event.which || event.ctrlKey) {\n                    return\n                }\n\n                // Close any currently open popups\n                $('.igv-popover').hide()\n\n\n                if (this.browser.dragObject || this.browser.isScrolling) {\n                    return\n                }\n\n                // Treat as a mouse click, its either a single or double click.\n                // Handle here and stop propogation / default\n                event.preventDefault()\n\n                const mouseX = DOMUtils.translateMouseCoordinates(event, this.$viewport.get(0)).x\n                const mouseXCanvas = DOMUtils.translateMouseCoordinates(event, this.canvas).x\n                const referenceFrame = this.referenceFrame\n                const xBP = Math.floor((referenceFrame.start) + referenceFrame.toBP(mouseXCanvas))\n\n                const time = Date.now()\n\n                if (time - lastClickTime < this.browser.constants.doubleClickDelay) {\n\n                    // double-click\n                    if (popupTimerID) {\n                        window.clearTimeout(popupTimerID)\n                        popupTimerID = undefined\n                    }\n\n                    const centerBP = Math.round(referenceFrame.start + referenceFrame.toBP(mouseX))\n\n                    let string\n\n                    if ('all' === this.referenceFrame.chr.toLowerCase()) {\n\n                        const chr = this.browser.genome.getChromosomeCoordinate(centerBP).chr\n\n                        if (1 === this.browser.referenceFrameList.length) {\n                            string = chr\n                        } else {\n                            const loci = this.browser.referenceFrameList.map(({locusSearchString}) => locusSearchString)\n                            const index = this.browser.referenceFrameList.indexOf(this.referenceFrame)\n                            loci[index] = chr\n                            string = loci.join(' ')\n                        }\n\n                        this.browser.search(string)\n\n                    } else {\n                        this.browser.zoomWithScaleFactor(0.5, centerBP, this.referenceFrame)\n                    }\n\n\n                } else {\n                    // single-click\n\n                    if (event.shiftKey && typeof this.trackView.track.shiftClick === \"function\") {\n\n                        this.trackView.track.shiftClick(xBP, event)\n\n                    } else if (typeof this.trackView.track.popupData === \"function\") {\n\n                        popupTimerID = setTimeout(() => {\n\n                                const content = this.getPopupContent(event)\n                                if (content) {\n                                    if (this.popover) this.popover.dispose()\n                                    this.popover = new Popover(this.browser.columnContainer)\n                                    this.popover.presentContentWithEvent(event, content)\n                                }\n                                window.clearTimeout(popupTimerID)\n                                popupTimerID = undefined\n                            },\n                            this.browser.constants.doubleClickDelay)\n                    }\n                }\n\n                lastClickTime = time\n\n            }\n        })\n    }\n\n    addTrackLabelClickHandler(trackLabel) {\n\n        trackLabel.addEventListener('click', (event) => {\n\n            event.stopPropagation()\n\n            const {track} = this.trackView\n\n            let str\n            if (typeof track.description === 'function') {\n                str = track.description()\n            } else if (track.description) {\n                str = `<div>${track.description}</div>`\n            }\n\n            if (str) {\n                if (this.popover) {\n                    this.popover.dispose()\n                }\n                this.popover = new Popover(this.browser.columnContainer, (track.name || ''))\n                this.popover.presentContentWithEvent(event, str)\n            }\n        })\n    }\n\n    createClickState(event) {\n\n        if (!this.canvas) return  // Can happen during initialization\n\n        const referenceFrame = this.referenceFrame\n        const viewportCoords = DOMUtils.translateMouseCoordinates(event, this.$viewport.get(0))\n        const canvasCoords = DOMUtils.translateMouseCoordinates(event, this.canvas)\n        const genomicLocation = ((referenceFrame.start) + referenceFrame.toBP(viewportCoords.x))\n\n        return {\n            event,\n            viewport: this,\n            referenceFrame,\n            genomicLocation,\n            y: viewportCoords.y - this.contentTop,\n            canvasX: canvasCoords.x,\n            canvasY: canvasCoords.y\n        }\n\n    }\n\n    getPopupContent(event) {\n\n        const clickState = this.createClickState(event)\n\n        if (undefined === clickState) {\n            return\n        }\n\n        let track = this.trackView.track\n        const dataList = track.popupData(clickState)\n\n        const popupClickHandlerResult = this.browser.fireEvent('trackclick', [track, dataList])\n\n        let content\n        if (undefined === popupClickHandlerResult || true === popupClickHandlerResult) {\n            // Indicates handler did not handle the result, or the handler wishes default behavior to occur\n            if (dataList && dataList.length > 0) {\n                content = formatPopoverText(dataList)\n            }\n\n        } else if (typeof popupClickHandlerResult === 'string') {\n            content = popupClickHandlerResult\n        }\n\n        return content\n    }\n\n\n}\n\n\nfunction formatPopoverText(nameValues) {\n\n    const rows = nameValues.map(nameValue => {\n\n        if (nameValue.name) {\n            const str = `<span>${nameValue.name}</span>&nbsp&nbsp&nbsp${nameValue.value}`\n            return `<div title=\"${nameValue.value}\">${str}</div>`\n        } else if ('<hr>' === nameValue) { // this can be retired if nameValue.html is allowed.\n            return nameValue\n        } else if (nameValue.html) {\n            return nameValue.html\n        } else {\n            return `<div title=\"${nameValue}\">${nameValue}</div>`\n        }\n\n    })\n\n    return rows.join('')\n}\n\nclass FeatureCache {\n\n    constructor(chr, tileStart, tileEnd, bpPerPixel, features, roiFeatures, multiresolution) {\n        this.chr = chr\n        this.bpStart = tileStart\n        this.bpEnd = tileEnd\n        this.bpPerPixel = bpPerPixel\n        this.features = features\n        this.roiFeatures = roiFeatures\n        this.multiresolution = multiresolution\n    }\n\n    containsRange(chr, start, end, bpPerPixel) {\n\n        // For multi-resolution tracks allow for a 2X change in bpPerPixel\n        const r = this.multiresolution ? this.bpPerPixel / bpPerPixel : 1\n\n        return start >= this.bpStart && end <= this.bpEnd && chr === this.chr && r > 0.5 && r < 2\n    }\n\n    overlapsRange(chr, start, end) {\n        return this.chr === chr && end >= this.bpStart && start <= this.bpEnd\n    }\n}\n\n\n/**\n * Merge 2 arrays.  a and/or b can be undefined.  If both are undefined, return undefined\n * @param a An array or undefined\n * @param b An array or undefined\n */\nfunction mergeArrays(a, b) {\n    if (a && b) return a.concat(b)\n    else if (a) return a\n    else return b\n\n}\n\nexport default TrackViewport\n","import {IGVColor} from \"../../../node_modules/igv-utils/src/index.js\"\n\n/**\n * Decode UCSC \"interact\" files.  See https://genome.ucsc.edu/goldenpath/help/interact.html\n *\n 0  string chrom;        \"Chromosome (or contig, scaffold, etc.). For interchromosomal, use 2 records\"\n 1  uint chromStart;     \"Start position of lower region. For interchromosomal, set to chromStart of this region\"\n 2  uint chromEnd;       \"End position of upper region. For interchromosomal, set to chromEnd of this region\"\n 3  string name;         \"Name of item, for display.  Usually 'sourceName/targetName/exp' or empty\"\n 4  uint score;          \"Score (0-1000)\"\n 5  double value;        \"Strength of interaction or other data value. Typically basis for score\"\n 6  string exp;          \"Experiment name (metadata for filtering). Use . if not applicable\"\n 7  string color;        \"Item color.  Specified as r,g,b or hexadecimal #RRGGBB or html color name, as in //www.w3.org/TR/css3-color/#html4. Use 0 and spectrum setting to shade by score\"\n 8  string sourceChrom;  \"Chromosome of source region (directional) or lower region. For non-directional interchromosomal, chrom of this region.\"\n 9  uint sourceStart;    \"Start position in chromosome of source/lower/this region\"\n 10 uint sourceEnd;      \"End position in chromosome of source/lower/this region\"\n 11 string sourceName;   \"Identifier of source/lower/this region\"\n 12 string sourceStrand; \"Orientation of source/lower/this region: + or -.  Use . if not applicable\"\n 13 string targetChrom;  \"Chromosome of target region (directional) or upper region. For non-directional interchromosomal, chrom of other region\"\n 14 uint targetStart;    \"Start position in chromosome of target/upper/this region\"\n 15 uint targetEnd;      \"End position in chromosome of target/upper/this region\"\n 16 string targetName;   \"Identifier of target/upper/this region\"\n 17 string targetStrand; \"Orientation of target/upper/this region: + or -.  Use . if not applicable\"\n *\n * @param tokens\n * @param ignore\n * @returns {*}\n */\nfunction decodeInteract(tokens, header) {\n\n    if (tokens.length < 6) {\n        console.log(\"Skipping line: \" + tokens.join(' '))\n        return undefined\n    }\n\n    var feature = {\n        chr: tokens[0],\n        start: tokens[1],\n        end: tokens[2],\n\n        chr1: tokens[8],\n        start1: Number.parseInt(tokens[9]),\n        end1: Number.parseInt(tokens[10]),\n\n        chr2: tokens[13],\n        start2: Number.parseInt(tokens[14]),\n        end2: Number.parseInt(tokens[15]),\n\n        name: tokens[3],\n        score: Number(tokens[4]),\n        value: Number(tokens[5]),\n        color: tokens[7] === '.' ? undefined : tokens[7] === \"0\" ? \"rgb(0,0,0)\" : tokens[7],\n\n    }\n\n    return feature\n}\n\n/**\n * Special decoder for Hic Domain files.   In these files feature1 == feature2, they are really bed records.\n * @param tokens\n * @param ignore\n * @returns {*}\n */\nfunction decodeBedpeDomain(tokens, ignore) {\n\n    if (tokens.length < 8) return undefined\n\n    return {\n        chr: tokens[0],\n        start: Number.parseInt(tokens[1]),\n        end: Number.parseInt(tokens[2]),\n        color: IGVColor.createColorString(tokens[6]),\n        score: Number(tokens[7])\n    }\n}\n\n\nexport {decodeInteract}","/**\n * Some interpretations of the sequence ontology needed to assemble GFF transcripts.\n *\n */\n\nconst transcriptTypes = new Set(['transcript', 'primary_transcript', 'processed_transcript', 'mRNA', 'mrna',\n    'lnc_RNA', 'miRNA', 'ncRNA', 'rRNA', 'scRNA', 'snRNA', 'snoRNA', 'tRNA'])\nconst cdsTypes = new Set(['CDS', 'cds'])\nconst codonTypes = new Set(['start_codon', 'stop_codon'])\nconst utrTypes = new Set(['5UTR', '3UTR', 'UTR', 'five_prime_UTR', 'three_prime_UTR', \"3'-UTR\", \"5'-UTR\"])\nconst exonTypes = new Set(['exon', 'coding-exon'])\n\nconst transcriptPartTypes = new Set()\nfor (let cltn of [cdsTypes, codonTypes, utrTypes, exonTypes]) {\n    for (let t of cltn) {\n        transcriptPartTypes.add(t)\n    }\n}\n\nfunction isExon(type) {\n    return exonTypes.has(type)\n}\n\nfunction isIntron(type) {\n    return type.includes(\"intron\")\n}\n\nfunction isCoding(type) {\n    return cdsTypes.has(type) || codonTypes.has(type)\n}\n\nfunction isUTR(type) {\n    return utrTypes.has(type)\n}\n\nfunction isTranscript(type) {\n    return transcriptTypes.has(type) || type.endsWith(\"RNA\") || type.endsWith(\"transcript\")\n}\n\nfunction isTranscriptPart(type) {\n    return transcriptPartTypes.has(type) || type.endsWith(\"RNA\") || isIntron(type)\n}\n\n\nexport {isTranscript, isTranscriptPart, isExon, isIntron, isCoding, isUTR}\n","import {StringUtils} from \"../../../node_modules/igv-utils/src/index.js\"\nimport {isCoding, isIntron, isUTR} from \"./so.js\"\nimport {parseAttributeString} from \"./gff.js\"\n\nconst filterPopupProperties = new Set([\"id\", \"parent\", \"name\"])\n\nclass GFFFeature {\n\n    constructor(properties) {\n        Object.assign(this, properties)\n    }\n\n    popupData(genomicLocation) {\n\n        const pd = this.geneObject ? this.geneObject.popupData() : []\n\n        if (this.geneObject) {\n            pd.push('<hr/>')\n        }\n\n        if (this.name) {\n            pd.push({name: 'Name', value: this.name})\n        }\n\n        pd.push({name: 'Type', value: this.type})\n        pd.push({name: 'Source', value: this.source})\n        if (this.score !== undefined) {\n            pd.push({name: 'Score', value: this.score})\n        }\n\n        if (this.attributeString) {\n            const atts = parseAttributeString(this.attributeString, this.delim)\n            for (let [key, value] of atts) {\n                if (value !== undefined && value.length > 0 && !filterPopupProperties.has(key.toLowerCase())) {\n                    pd.push({name: key + \":\", value: value})\n                }\n            }\n        }\n        pd.push({\n            name: 'Location',\n            value: `${this.chr}:${StringUtils.numberFormatter(this.start + 1)}-${StringUtils.numberFormatter(this.end)}`\n        })\n        return pd\n    }\n\n    getAttributeValue(attributeName) {\n        if (this.hasOwnProperty(attributeName)) {\n            return this[attributeName]\n        } else {\n            // TODO -- fetch from attribute string and cache\n            if (!this._attributeCache) {\n                this._attributeCache = new Map()\n            }\n            if (this._attributeCache.has(attributeName)) {\n                return this._attributeCache.get(attributeName)\n            } else {\n                const atts = parseAttributeString(this.attributeString, this.delim)\n                let v\n                for (let [key, value] of atts) {\n                    if (key === attributeName) {\n                        v = value\n                        break\n                    }\n                }\n                this._attributeCache.set(attributeName, v)\n                return v\n            }\n        }\n    }\n}\n\nclass GFFTranscript extends GFFFeature {\n\n    constructor(feature) {\n        super(feature)\n        this.exons = []\n        this.parts = []\n    }\n\n    addExon(feature) {\n\n        this.exons.push(feature)\n\n        // Expand feature --  for transcripts not explicitly represented in the file (gtf)\n        this.start = Math.min(this.start, feature.start)\n        this.end = Math.max(this.end, feature.end)\n    }\n\n    addPart(feature) {\n        this.parts.push(feature)\n    }\n\n    assembleParts() {\n\n        if (this.parts.length === 0) return\n\n        this.parts.sort(function (a, b) {\n            return a.start - b.start\n        })\n\n        // Create exons, if neccessary\n        let lastStart = this.parts[0].start\n        let lastEnd = this.parts[0].end\n        for (let i = 1; i < this.parts.length; i++) {\n            const part = this.parts[i]\n            if (isIntron(part.type)) {\n                continue\n            }\n            if (part.start <= lastEnd) {\n                lastEnd = Math.max(lastEnd, part.end)\n            } else {\n                let exon = this.findExonContaining({start: lastStart, end: lastEnd})\n                if (!exon) {\n                    this.exons.push({start: lastStart, end: lastEnd, psuedo: true})\n                }\n                lastStart = part.start\n                lastEnd = part.end\n            }\n        }\n        let exon = this.findExonContaining({start: lastStart, end: lastEnd})\n        if (!exon) {\n            this.exons.push({start: lastStart, end: lastEnd, psuedo: true})\n            this.start = Math.min(this.start, lastStart)\n            this.end = Math.max(this.end, lastEnd)\n        }\n\n\n        for (let part of this.parts) {\n            const type = part.type\n            if (isCoding(type)) {\n                this.addCDS(part)\n            } else if (isUTR(type)) {\n                this.addUTR(part)\n            }\n        }\n    }\n\n    findExonContaining({start, end}) {\n        for (let exon of this.exons) {\n            if (exon.end >= end && exon.start <= start) {\n                return exon\n            }\n        }\n        return undefined\n    }\n\n    addCDS(cds) {\n\n        let exon\n        const exons = this.exons\n\n        for (let e of exons) {\n            if (e.start <= cds.start && e.end >= cds.end) {\n                exon = e\n                break\n            }\n        }\n\n        if (exon) {\n            exon.cdStart = exon.cdStart ? Math.min(cds.start, exon.cdStart) : cds.start\n            exon.cdEnd = exon.cdEnd ? Math.max(cds.end, exon.cdEnd) : cds.end\n        } else {\n            // cds.cdStart = cds.start\n            // cds.cdEnd = cds.end\n            // exons.push(cds)\n            console.error(\"No exon found spanning \" + cds.start + \"-\" + cds.end)\n        }\n\n        // Expand feature --  for transcripts not explicitly represented in the file (gtf files)\n        // this.start = Math.min(this.start, cds.start);\n        // this.end = Math.max(this.end, cds.end);\n\n        this.cdStart = this.cdStart ? Math.min(cds.start, this.cdStart) : cds.start\n        this.cdEnd = this.cdEnd ? Math.max(cds.end, this.cdEnd) : cds.end\n    }\n\n    addUTR(utr) {\n\n        let exon\n        const exons = this.exons\n\n        // Find exon containing CDS\n        for (let i = 0; i < exons.length; i++) {\n            if (exons[i].start <= utr.start && exons[i].end >= utr.end) {\n                exon = exons[i]\n                break\n            }\n        }\n\n        if (exon) {\n            if (utr.start === exon.start && utr.end === exon.end) {\n                exon.utr = true\n            } else {\n                if (utr.end < exon.end) {\n                    exon.cdStart = utr.end\n                }\n                if (utr.start > exon.start) {\n                    exon.cdEnd = utr.start\n                }\n            }\n\n        } else {\n            // utr.utr = true\n            // exons.push(utr)\n            console.error(\"No exon found spanning \" + cds.start + \"-\" + cds.end)\n        }\n\n        // Expand feature --  for transcripts not explicitly represented in the file\n        // this.start = Math.min(this.start, utr.start);\n        // this.end = Math.max(this.end, utr.end);\n\n    }\n\n    finish() {\n\n        this.assembleParts()\n\n        var cdStart = this.cdStart\n        var cdEnd = this.cdEnd\n\n        this.exons.sort(function (a, b) {\n            return a.start - b.start\n        })\n\n        // Search for UTR exons that were not explicitly tagged\n        if (cdStart) {\n            this.exons.forEach(function (exon) {\n                if (exon.end < cdStart || exon.start > cdEnd) exon.utr = true\n            })\n        }\n    }\n\n    popupData(genomicLocation) {\n\n        const pd = super.popupData(genomicLocation)\n\n        // If clicked over an exon add its attributes\n        for (let exon of this.exons) {\n            if (exon.pseudo) continue  // An implicit exon\n            if (genomicLocation >= exon.start && genomicLocation < exon.end && typeof exon.popupData === 'function') {\n                pd.push('<hr/>')\n                const exonData = exon.popupData(genomicLocation)\n                for (let att of exonData) {\n                    pd.push(att)\n                }\n            }\n        }\n\n        for (let part of this.parts) {\n            if (genomicLocation >= part.start && genomicLocation < part.end && typeof part.popupData === 'function') {\n                pd.push('<hr/>')\n                const partData = part.popupData(genomicLocation)\n                for (let att of partData) {\n                    pd.push(att)\n                }\n            }\n        }\n\n\n        return pd\n    }\n}\n\nexport {GFFFeature, GFFTranscript}\n","import {IGVColor} from \"../../../node_modules/igv-utils/src/index.js\"\nimport {GFFFeature} from \"./gffFeature.js\"\n\nfunction decode(tokens, header) {\n\n    const format = header.format\n    if (tokens.length < 9) {\n        return undefined      // Not a valid gff record\n    }\n\n    const delim = ('gff3' === format) ? '=' : ' '\n    return new GFFFeature({\n        source: decodeGFFAttribute(tokens[1]),\n        type: tokens[2],\n        chr: tokens[0],\n        start: parseInt(tokens[3]) - 1,\n        end: parseInt(tokens[4]),\n        score: \".\" === tokens[5] ? undefined : Number(tokens[5]),\n        strand: tokens[6],\n        phase: \".\" === tokens[7] ? 0 : parseInt(tokens[7]),\n        attributeString: tokens[8],\n        delim: delim\n    })\n}\n\n\n/**\n * Decode a single gff record (1 line in file).  Aggregations such as gene models are constructed at a higher level.\n *      ctg123 . mRNA            1050  9000  .  +  .  ID=mRNA00001;Parent=gene00001\n * @param tokens\n * @param ignore\n * @returns {*}\n */\nfunction decodeGFF3(tokens, header) {\n\n    const feature = decode(tokens, header)\n\n    if (!feature) {\n        return\n    }\n\n    const attributes = parseAttributeString(feature.attributeString, feature.delim)\n\n    // Search for color value as case insenstivie key\n    for (let [key, value] of attributes) {\n        const keyLower = key.toLowerCase()\n        if (\"color\" === keyLower || \"colour\" === keyLower) {\n            feature.color = IGVColor.createColorString(value)\n        } else if (key === \"ID\") {\n            feature.id = value\n        } else if (key === \"Parent\") {\n            feature.parent = value\n        }\n    }\n    return feature\n}\n\n/**\n * GTF format example:\n NC_000008.11    BestRefSeq    gene    127735434    127742951    .    +    .    gene_id \"MYC\"; transcript_id \"\"; db_xref \"GeneID:4609\"; db_xref \"HGNC:HGNC:7553\"; db_xref \"MIM:190080\"; description \"MYC proto-oncogene, bHLH transcription factor\"; gbkey \"Gene\"; gene \"MYC\"; gene_biotype \"protein_coding\"; gene_synonym \"bHLHe39\"; gene_synonym \"c-Myc\"; gene_synonym \"MRTL\"; gene_synonym \"MYCC\";\n NC_000008.11    BestRefSeq    transcript    127735434    127742951    .    +    .    gene_id \"MYC\"; transcript_id \"NM_001354870.1\"; db_xref \"GeneID:4609\"; gbkey \"mRNA\"; gene \"MYC\"; product \"MYC proto-oncogene, bHLH transcription factor, transcript variant 2\"; transcript_biotype \"mRNA\";\n NC_000008.11    BestRefSeq    exon    127735434    127736623    .    +    .    gene_id \"MYC\"; transcript_id \"NM_001354870.1\"; db_xref \"GeneID:4609\"; gene \"MYC\"; product \"MYC proto-oncogene, bHLH transcription factor, transcript variant 2\"; transcript_biotype \"mRNA\"; exon_number \"1\";\n *\n * @param tokens\n * @param ignore\n * @returns {*}\n */\nfunction decodeGTF(tokens, header) {\n\n    const feature = decode(tokens, header)\n\n    if (!feature) {\n        return\n    }\n\n    const attributes = parseAttributeString(feature.attributeString, feature.delim)\n\n    // GTF files specify neither ID nor parent fields, but they can be inferred from common conventions\n    let idField\n    let parentField\n    switch (feature.type) {\n        case \"gene\":\n            idField = \"gene_id\"\n            break\n        case \"transcript\":\n            idField = \"transcript_id\"\n            parentField = \"gene_id\"\n            break\n        default:\n            parentField = \"transcript_id\"\n    }\n\n    for (let [key, value] of attributes) {\n        const keyLower = key.toLowerCase()\n        if (\"color\" === keyLower || \"colour\" === keyLower) {\n            feature.color = IGVColor.createColorString(value)\n        } else if (key === idField) {\n            feature.id = value\n        } else if (key === parentField) {\n            feature.parent = value\n        }\n    }\n    return feature\n\n}\n\n\n/**\n * Parse the attribute string, returning an array of key-value pairs.  An array is used rather than a map as attribute\n * keys are not required to be unique.\n *\n * @param attributeString\n * @param keyValueDelim\n * @returns {[]}\n */\nfunction parseAttributeString(attributeString, keyValueDelim, relaxed = false) {\n    // parse 'attributes' string (see column 9 docs in https://github.com/The-Sequence-Ontology/Specifications/blob/master/gff3.md)\n    var attributes = []\n    for (let kv of attributeString.split(';')) {\n        kv = kv.trim()\n        const idx = kv.indexOf(keyValueDelim)\n        if (idx > 0 && idx < kv.length - 1) {\n            const key = stripQuotes(decodeGFFAttribute(kv.substring(0, idx).trim(), relaxed))\n            let value = stripQuotes(decodeGFFAttribute(kv.substring(idx + 1).trim(), relaxed))\n            attributes.push([key, value])\n        }\n    }\n    return attributes\n}\n\nfunction stripQuotes(value) {\n    if (value.startsWith('\"') && value.endsWith('\"')) {\n        value = value.substr(1, value.length - 2)\n    }\n    return value\n}\n\n// GFF3 attributes have specific percent encoding rules, the list below are required, all others are forbidden\n/*\ntab (%09)\nnewline (%0A)\ncarriage return (%0D)\n% percent (%25)\ncontrol characters (%00 through %1F, %7F)\nIn addition, the following characters have reserved meanings in column 9 and must be escaped when used in other contexts:\n; semicolon (%3B)\n= equals (%3D)\n& ampersand (%26)\n, comma (%2C)\n */\n\nconst encodings = new Map([\n    [\"%09\", \"\\t\"],\n    [\"%0A\", \"\\n\"],\n    [\"%0D\", \"\\r\"],\n    [\"%25\", \"%\"],\n    [\"%3B\", \";\"],\n    [\"%3D\", \"=\"],\n    [\"%26\", \"&\"],\n    [\"%2C\", \",\"]\n])\n\nfunction decodeGFFAttribute(str, relaxed = false) {\n\n    if (!str.includes(\"%\")) {\n        return str\n    }\n    if (relaxed) {\n        return decodeURIComponent(str);\n    }\n    let decoded = \"\"\n    for (let i = 0; i < str.length; i++) {\n\n        if (str.charCodeAt(i) === 37 && i < str.length - 2) {\n            const key = str.substring(i, i + 3)\n            if (encodings.has(key)) {\n                decoded += encodings.get(key)\n            } else {\n                decoded += key\n            }\n            i += 2\n        } else {\n            decoded += str.charAt(i)\n        }\n    }\n    return decoded\n\n}\n\n\nexport {decodeGFF3, decodeGTF, parseAttributeString, decodeGFFAttribute}\n\n\n\n","/**\n * Wrapper class to record a decoding error.\n */\n\nclass DecodeError {\n    constructor(message) {\n        this.message = message\n    }\n}\n\nexport default DecodeError","import {IGVColor} from \"../../../node_modules/igv-utils/src/index.js\"\nimport {parseAttributeString} from \"../gff/gff.js\"\nimport DecodeError from \"./decodeError.js\"\n\n\n/**\n * Decode the UCSC bed format.  Only the first 3 columns (chr, start, end) are required.   The remaining columns\n * must follow standard bed order, but we will tolerate deviations after column 3.\n *\n * @param tokens\n * @param ignore\n * @returns decoded feature, or null if this is not a valid record\n */\nfunction decodeBed(tokens, header) {\n\n\n    if (tokens.length < 3) return undefined\n\n    const gffTags = header && header.gffTags\n\n    const chr = tokens[0]\n    const start = parseInt(tokens[1])\n    const end = tokens.length > 2 ? parseInt(tokens[2]) : start + 1\n    if (isNaN(start) || isNaN(end)) {\n        return new DecodeError(`Unparsable bed record.`)\n    }\n    const feature = new UCSCBedFeature({chr: chr, start: start, end: end, score: 1000})\n\n    try {\n        if (tokens.length > 3) {\n\n            // Potentially parse name field as GFF column 9 style streng.\n            if (tokens[3].indexOf(';') > 0 && tokens[3].indexOf('=') > 0) {\n                const attributeKVs = parseAttributeString(tokens[3], '=', true)\n                feature.attributes = {}\n                for (let kv of attributeKVs) {\n                    feature.attributes[kv[0]] = kv[1]\n                    if (header.nameField != undefined && kv[0] === header.nameField) {\n                        feature.name = kv[1]\n                    }\n                }\n            }\n            if (!feature.name) {\n                feature.name = tokens[3] === '.' ? '' : tokens[3]\n            }\n        }\n\n        if (tokens.length > 4) {\n            feature.score = tokens[4] === '.' ? 0 : Number(tokens[4])\n            if (isNaN(feature.score)) {\n                return feature\n            }\n        }\n\n        if (tokens.length > 5) {\n            feature.strand = tokens[5]\n            if (!(feature.strand === '.' || feature.strand === '+' || feature.strand === '-')) {\n                return feature\n            }\n        }\n\n        if (tokens.length > 6) {\n            feature.cdStart = parseInt(tokens[6])\n            if (isNaN(feature.cdStart)) {\n                return feature\n            }\n        }\n\n        if (tokens.length > 7) {\n            feature.cdEnd = parseInt(tokens[7])\n            if (isNaN(feature.cdEnd)) {\n                return feature\n            }\n        }\n\n        if (tokens.length > 8) {\n            if (tokens[8] !== \".\" && tokens[8] !== \"0\")\n                feature.color = IGVColor.createColorString(tokens[8])\n        }\n\n        if (tokens.length > 11) {\n            const exonCount = parseInt(tokens[9])\n            // Some basic validation\n            if (exonCount > 1000) {\n                // unlikely\n                return feature\n            }\n\n            const exonSizes = tokens[10].replace(/,$/, '').split(',')\n            const exonStarts = tokens[11].replace(/,$/, '').split(',')\n            if (!(exonSizes.length === exonStarts.length && exonCount === exonSizes.length)) {\n                return feature\n            }\n\n            const exons = []\n            for (let i = 0; i < exonCount; i++) {\n                const eStart = start + parseInt(exonStarts[i])\n                const eEnd = eStart + parseInt(exonSizes[i])\n                exons.push({start: eStart, end: eEnd})\n            }\n            if (exons.length > 0) {\n                findUTRs(exons, feature.cdStart, feature.cdEnd)\n                feature.exons = exons\n            }\n        }\n\n        // Optional extra columns\n        if (header) {\n            let thicknessColumn = header.thicknessColumn\n            let colorColumn = header.colorColumn\n            if (colorColumn && colorColumn < tokens.length) {\n                feature.color = IGVColor.createColorString(tokens[colorColumn])\n            }\n            if (thicknessColumn && thicknessColumn < tokens.length) {\n                feature.thickness = tokens[thicknessColumn]\n            }\n        }\n    } catch\n        (e) {\n\n    }\n\n    return feature\n}\n\n/**\n * Decode a UCSC repeat masker record.\n */\nfunction decodeRepeatMasker(tokens, header) {\n\n    /**\n     * Columns, from UCSC documentation\n     *\n     * 0  bin    585    smallint(5) unsigned    Indexing field to speed chromosome range queries.\n     * 1  swScore    1504    int(10) unsigned    Smith Waterman alignment score\n     * 2  milliDiv    13    int(10) unsigned    Base mismatches in parts per thousand\n     * 3  milliDel    4    int(10) unsigned    Bases deleted in parts per thousand\n     * 4  milliIns    13    int(10) unsigned    Bases inserted in parts per thousand\n     * 5  genoName    chr1    varchar(255)    Genomic sequence name\n     * 6  genoStart    10000    int(10) unsigned    Start in genomic sequence\n     * 7  genoEnd    10468    int(10) unsigned    End in genomic sequence\n     * 8  genoLeft    -249240153    int(11)    -#bases after match in genomic sequence\n     * 9  strand    +    char(1)    Relative orientation + or -\n     * 10 repName    (CCCTAA)n    varchar(255)    Name of repeat\n     * 11 repClass    Simple_repeat    varchar(255)    Class of repeat\n     * 12 repFamily    Simple_repeat    varchar(255)    Family of repeat\n     * 13 repStart    1    int(11)    Start (if strand is +) or -#bases after match (if strand is -) in repeat sequence\n     * 14 repEnd    463    int(11)    End in repeat sequence\n     * 15 repLeft    0    int(11)    -#bases after match (if strand is +) or start (if strand is -) in repeat sequence\n     * 16 id    1    char(1)    First digit of id field in RepeatMasker .out file. Best ignored.\n     */\n    if (tokens.length <= 15) return undefined\n\n    const feature = {\n        swScore: Number.parseInt(tokens[1]),\n        milliDiv: Number.parseInt(tokens[2]),\n        milliDel: Number.parseInt(tokens[3]),\n        milliIns: Number.parseInt(tokens[4]),\n        chr: tokens[5],\n        start: Number.parseInt(tokens[6]),\n        end: Number.parseInt(tokens[7]),\n        //genoLeft: tokens[8],\n        strand: tokens[9],\n        repName: tokens[10],\n        repClass: tokens[11],\n        repFamily: tokens[12],\n        repStart: Number.parseInt(tokens[13]),\n        repEnd: Number.parseInt(tokens[14]),\n        repLeft: Number.parseInt(tokens[15])\n    }\n\n    return feature\n\n}\n\n/**\n * Decode a UCSC \"genePred\" record.\n *\n * @param tokens\n * @param ignore\n * @returns {*}\n */\nfunction decodeGenePred(tokens, header) {\n\n    var shift = header.shift === undefined ? 0 : 1\n\n    if (tokens.length <= 9 + shift) return undefined\n\n    const cdStart = parseInt(tokens[5 + shift])\n    const cdEnd = parseInt(tokens[6 + shift])\n    var feature = {\n        name: tokens[0 + shift],\n        chr: tokens[1 + shift],\n        strand: tokens[2 + shift],\n        start: parseInt(tokens[3 + shift]),\n        end: parseInt(tokens[4 + shift]),\n        cdStart: cdStart,\n        cdEnd: cdEnd,\n        id: tokens[0 + shift]\n    }\n    const exons = decodeExons(parseInt(tokens[7 + shift]), tokens[8 + shift], tokens[9 + shift])\n    findUTRs(exons, cdStart, cdEnd)\n\n    feature.exons = exons\n\n    return feature\n\n}\n\n/**\n * Decode a UCSC \"genePredExt\" record.  refGene files are in this format.\n *\n * @param tokens\n * @param ignore\n * @returns {*}\n */\nfunction decodeGenePredExt(tokens, header) {\n\n    var shift = header.shift === undefined ? 0 : 1\n\n    if (tokens.length <= 11 + shift) return undefined\n\n    const cdStart = parseInt(tokens[5 + shift])\n    const cdEnd = parseInt(tokens[6 + shift])\n    const feature = {\n        name: tokens[11 + shift],\n        chr: tokens[1 + shift],\n        strand: tokens[2 + shift],\n        start: parseInt(tokens[3 + shift]),\n        end: parseInt(tokens[4 + shift]),\n        cdStart: cdStart,\n        cdEnd: cdEnd,\n        id: tokens[0 + shift]\n    }\n\n    const exons = decodeExons(parseInt(tokens[7 + shift]), tokens[8 + shift], tokens[9 + shift])\n    findUTRs(exons, cdStart, cdEnd)\n\n    feature.exons = exons\n\n    return feature\n}\n\n/**\n * Decode a UCSC \"refFlat\" record\n * @param tokens\n * @param ignore\n * @returns {*}\n */\nfunction decodeReflat(tokens, header) {\n\n    var shift = header.shift === undefined ? 0 : 1\n\n    if (tokens.length <= 10 + shift) return undefined\n\n    const cdStart = parseInt(tokens[6 + shift])\n    const cdEnd = parseInt(tokens[7 + shift])\n    var feature = {\n        name: tokens[0 + shift],\n        id: tokens[1 + shift],\n        chr: tokens[2 + shift],\n        strand: tokens[3 + shift],\n        start: parseInt(tokens[4 + shift]),\n        end: parseInt(tokens[5 + shift]),\n        cdStart: cdStart,\n        cdEnd: cdEnd\n    }\n\n    const exons = decodeExons(parseInt(tokens[8 + shift]), tokens[9 + shift], tokens[10 + shift])\n    findUTRs(exons, cdStart, cdEnd)\n    feature.exons = exons\n\n    return feature\n}\n\n/**\n * Decode a UCS PSL record *\n * @param tokens\n * @param header\n * @returns {DecodeError|UCSCBedFeature|undefined}\n */\nfunction decodePSL(tokens, header) {\n\n    /*\n    * 0 matches - Number of bases that match that aren't repeats\n    * 1 misMatches - Number of bases that don't match\n    * 2 repMatches - Number of bases that match but are part of repeats\n    * 3 nCount - Number of \"N\" bases\n    * 4 qNumInsert - Number of inserts in query\n    * 5 qBaseInsert - Number of bases inserted in query\n    * 6 tNumInsert - Number of inserts in target\n    * 7 tBaseInsert - Number of bases inserted in target\n    * 8 strand - \"+\" or \"-\" for query strand. For translated alignments, second \"+\"or \"-\" is for target genomic strand.\n    * 9 qName - Query sequence name\n    * 10 qSize - Query sequence size.\n    * 11 qStart - Alignment start position in query\n    * 12 qEnd - Alignment end position in query\n    * 13 tName - Target sequence name\n    * 14 tSize - Target sequence size\n    * 15 tStart - Alignment start position in target\n    * 16 tEnd - Alignment end position in target\n    * 17 blockCount - Number of blocks in the alignment (a block contains no gaps)\n    * 18 blockSizes - Comma-separated list of sizes of each block. If the query is a protein and the target the genome, blockSizes are in amino acids. See below for more information on protein query PSLs.\n    * 19 qStarts - Comma-separated list of starting positions of each block in query\n    * 20 tStarts - Comma-separated list of starting positions of each block in target\n     */\n\n\n    if (tokens.length < 21) return undefined\n\n    const chr = tokens[13]\n    const start = parseInt(tokens[15])\n    const end = parseInt(tokens[16])\n    const strand = tokens[8].charAt(0)\n    const exonCount = parseInt(tokens[17])\n    const exons = []\n    const exonStarts = tokens[20].replace(/,$/, '').split(',')\n    const exonSizes = tokens[18].replace(/,$/, '').split(',')\n\n    for (let i = 0; i < exonCount; i++) {\n        const start = parseInt(exonStarts[i])\n        const end = start + parseInt(exonSizes[i])\n        exons.push({start: start, end: end})\n    }\n\n    return new PSLFeature({chr, start, end, strand, exons, tokens})\n}\n\n\nfunction decodeExons(exonCountToken, exonStartsToken, exonEndsToken) {\n\n    const exonCount = parseInt(exonCountToken)\n    const exonStarts = exonStartsToken.replace(/,$/, '').split(',')\n    const exonEnds = exonEndsToken.replace(/,$/, '').split(',')\n    const exons = []\n    for (let i = 0; i < exonCount; i++) {\n        const start = parseInt(exonStarts[i])\n        const end = parseInt(exonEnds[i])\n        exons.push({start: start, end: end})\n    }\n    return exons\n\n}\n\nfunction findUTRs(exons, cdStart, cdEnd) {\n\n    for (let exon of exons) {\n        const end = exon.end\n        const start = exon.start\n        if (end < cdStart || start > cdEnd) {\n            exon.utr = true\n        } else {\n            if (cdStart >= start && cdStart <= end) {\n                exon.cdStart = cdStart\n            }\n            if (cdEnd >= start && cdEnd <= end) {\n                exon.cdEnd = cdEnd\n            }\n        }\n    }\n\n}\n\nfunction decodePeak(tokens, header) {\n\n    var tokenCount, chr, start, end, strand, name, score, qValue, signal, pValue\n\n    tokenCount = tokens.length\n    if (tokenCount < 9) {\n        return undefined\n    }\n\n    chr = tokens[0]\n    start = parseInt(tokens[1])\n    end = parseInt(tokens[2])\n    name = tokens[3]\n    score = Number(tokens[4])\n    strand = tokens[5].trim()\n    signal = Number(tokens[6])\n    pValue = Number(tokens[7])\n    qValue = Number(tokens[8])\n\n    if (score === 0) score = signal\n\n    return {\n        chr: chr, start: start, end: end, name: name, score: score, strand: strand, signal: signal,\n        pValue: pValue, qValue: qValue\n    }\n}\n\nfunction decodeBedGraph(tokens, header) {\n\n    var chr, start, end, value\n\n    if (tokens.length <= 3) return undefined\n\n    chr = tokens[0]\n    start = parseInt(tokens[1])\n    end = parseInt(tokens[2])\n    value = Number(tokens[3])\n    const feature = {chr: chr, start: start, end: end, value: value}\n\n    // Optional extra columns\n    if (header) {\n        let colorColumn = header.colorColumn\n        if (colorColumn && colorColumn < tokens.length) {\n            feature.color = IGVColor.createColorString(tokens[colorColumn])\n        }\n    }\n\n    return feature\n}\n\nfunction decodeWig(tokens, header) {\n\n    const wig = header.wig\n\n    if (wig && wig.format === \"fixedStep\") {\n        const ss = (wig.index * wig.step) + wig.start\n        const ee = ss + wig.span\n        const value = Number(tokens[0])\n        ++(wig.index)\n        return isNaN(value) ? null : {chr: wig.chrom, start: ss, end: ee, value: value}\n    } else if (wig && wig.format === \"variableStep\") {\n\n        if (tokens.length < 2) return null\n        const ss = parseInt(tokens[0], 10) - 1\n        const ee = ss + wig.span\n        const value = Number(tokens[1])\n        return isNaN(value) ? null : {chr: wig.chrom, start: ss, end: ee, value: value}\n\n    } else {\n        return decodeBedGraph(tokens)\n    }\n}\n\nfunction decodeSNP(tokens, header) {\n\n    if (tokens.length < 6) return undefined\n\n    const autoSql = [\n        'bin',\n        'chr',\n        'start',\n        'end',\n        'name',\n        'score',\n        'strand',\n        'refNCBI',\n        'refUCSC',\n        'observed',\n        'molType',\n        'class',\n        'valid',\n        'avHet',\n        'avHetSE',\n        'func',\n        'locType',\n        'weight',\n        'exceptions',\n        'submitterCount',\n        'submitters',\n        'alleleFreqCount',\n        'alleles',\n        'alleleNs',\n        'alleleFreqs',\n        'bitfields'\n    ]\n\n\n    const feature = {\n        chr: tokens[1],\n        start: Number.parseInt(tokens[2]),\n        end: Number.parseInt(tokens[3]),\n        name: tokens[4],\n        score: Number.parseInt(tokens[5])\n    }\n\n    const n = Math.min(tokens.length, autoSql.length)\n    for (let i = 6; i < n; i++) {\n        feature[autoSql[i]] = tokens[i]\n    }\n    return feature\n\n}\n\nclass UCSCBedFeature {\n\n    constructor(properties) {\n        Object.assign(this, properties)\n    }\n\n    getAttributeValue(attributeName) {\n        if (this.hasOwnProperty(attributeName)) {\n            return this[attributeName]\n        } else if (this.attributes) {\n            return this.attributes[attributeName]\n        }\n    }\n}\n\n/*\n* 0 matches - Number of bases that match that aren't repeats\n* 1 misMatches - Number of bases that don't match\n* 2 repMatches - Number of bases that match but are part of repeats\n* 3 nCount - Number of \"N\" bases\n* 4 qNumInsert - Number of inserts in query\n* 5 qBaseInsert - Number of bases inserted in query\n* 6 tNumInsert - Number of inserts in target\n* 7 tBaseInsert - Number of bases inserted in target\n* 8 strand - \"+\" or \"-\" for query strand. For translated alignments, second \"+\"or \"-\" is for target genomic strand.\n* 9 qName - Query sequence name\n* 10 qSize - Query sequence size.\n* 11 qStart - Alignment start position in query\n* 12 qEnd - Alignment end position in query\n* 13 tName - Target sequence name\n* 14 tSize - Target sequence size\n* 15 tStart - Alignment start position in target\n* 16 tEnd - Alignment end position in target\n* 17 blockCount - Number of blocks in the alignment (a block contains no gaps)\n* 18 blockSizes - Comma-separated list of sizes of each block. If the query is a protein and the target the genome, blockSizes are in amino acids. See below for more information on protein query PSLs.\n* 19 qStarts - Comma-separated list of starting positions of each block in query\n* 20 tStarts - Comma-separated list of starting positions of each block in target\n */\n\nclass PSLFeature {\n\n\n    constructor(properties) {\n        Object.assign(this, properties)\n    }\n\n    get score() {\n        const tokens = this.tokens\n        const match = parseInt(tokens[0])\n        const repMatch = parseInt(tokens[2])\n        const misMatch = parseInt(tokens[1])\n        const qGapCount = parseInt(tokens[4])\n        const tGapCount = parseInt(tokens[6])\n        const qSize = parseInt(tokens[10])\n        return Math.floor((1000 * (match + repMatch - misMatch - qGapCount - tGapCount)) / qSize)\n    }\n\n    get matches() {\n        return this.tokens[0]\n    }\n\n    get misMatches() {\n        return this.tokens[1]\n    }\n\n    get repMatches() {\n        return this.tokens[2]\n    }\n\n    get nCount() {\n        return this.tokens[3]\n    }\n\n    get qNumInsert() {\n        return this.tokens[4]\n    }\n\n    get qBaseInsert() {\n        return this.tokens[5]\n    }\n\n    get tNumInsert() {\n        return this.tokens[6]\n    }\n\n    get tBaseInsert() {\n        return this.tokens[7]\n\n    }\n\n    popupData() {\n        return [\n            {name: 'chr', value: this.chr},\n            {name: 'start', value: this.start + 1},\n            {name: 'end', value: this.end},\n            {name: 'strand', value: this.strand},\n            {name: 'score', value: this.score},\n            {name: 'match', value: this.matches},\n            {name: \"mis-match\", value: this.misMatches},\n            {name: \"rep. match\", value: this.repMatches},\n            {name: \"N's\", value: this.nCount},\n            {name: 'Q gap count', value: this.qNumInsert},\n            {name: 'Q gap bases', value: this.qBaseInsert},\n            {name: 'T gap count', value: this.tNumInsert},\n            {name: 'T gap bases', value: this.tBaseInsert},\n        ]\n    }\n\n}\n\nexport {\n    decodeBed, decodeBedGraph, decodeGenePred, decodeGenePredExt, decodePeak, decodeReflat, decodeRepeatMasker,\n    decodeSNP, decodeWig, decodePSL\n}\n\n","function decodeFusionJuncSpan(tokens, header) {\n\n    /*\n     Format:\n\n     0       #scaffold\n     1       fusion_break_name\n     2       break_left\n     3       break_right\n     4       num_junction_reads\n     5       num_spanning_frags\n     6       spanning_frag_coords\n\n     0       B3GNT1--NPSR1\n     1       B3GNT1--NPSR1|2203-10182\n     2       2203\n     3       10182\n     4       189\n     5       1138\n     6       1860-13757,1798-13819,1391-18127,1443-17174,...\n\n     */\n\n\n    if (tokens.length < 7) return undefined\n\n    var chr = tokens[0]\n    var fusion_name = tokens[1]\n    var junction_left = parseInt(tokens[2])\n    var junction_right = parseInt(tokens[3])\n    var num_junction_reads = parseInt(tokens[4])\n    var num_spanning_frags = parseInt(tokens[5])\n\n    var spanning_frag_coords_text = tokens[6]\n\n    var feature = {\n        chr: chr,\n        name: fusion_name,\n        junction_left: junction_left,\n        junction_right: junction_right,\n        num_junction_reads: num_junction_reads,\n        num_spanning_frags: num_spanning_frags,\n        spanning_frag_coords: [],\n\n        start: -1,\n        end: -1\n    } // set start and end later based on min/max of span coords\n\n    var min_coord = junction_left\n    var max_coord = junction_right\n\n    if (num_spanning_frags > 0) {\n\n        var coord_pairs = spanning_frag_coords_text.split(',')\n\n        for (var i = 0; i < coord_pairs.length; i++) {\n            var split_coords = coord_pairs[i].split('-')\n\n            var span_left = split_coords[0]\n            var span_right = split_coords[1]\n\n            if (span_left < min_coord) {\n                min_coord = span_left\n            }\n            if (span_right > max_coord) {\n                max_coord = span_right\n            }\n            feature.spanning_frag_coords.push({left: span_left, right: span_right})\n\n        }\n    }\n\n    feature.start = min_coord\n    feature.end = max_coord\n\n\n    return feature\n\n}\n\nexport {decodeFusionJuncSpan}","function decodeGtexGWAS(tokens, header) {\n    //chrom\tchromStart\tchromEnd\tStrongest SNP-risk allele\tDisease/Phenotype\tP-value\tOdds ratio or beta\tPUBMEDID\n    //1\t1247493\t1247494\trs12103-A\tInflammatory bowel disease\t8.00E-13\t1.1\t23128233\n\n    const tokenCount = tokens.length\n    if (tokenCount < 7) {\n        return null\n    }\n    const feature = {\n        chr: tokens[0],\n        start: parseInt(tokens[1]) - 1,\n        end: parseInt(tokens[2]),\n        'Strongest SNP-risk allele': tokens[3],\n        'Disease/Phenotype': tokens[4],\n        'P-value': tokens[5],\n        'Odds ratio or beta': tokens[6],\n    }\n    if (tokens.length > 6) {\n        feature['PUBMEDID'] = `<a target = \"blank\" href = \"https://www.ncbi.nlm.nih.gov/pubmed/${tokens[7]}\">${tokens[7]}</a>`\n    }\n    return feature\n}\n\nexport {decodeGtexGWAS}","/**\n * Decode a custom columnar format.  Required columns are 'chr' and 'start'\n *\n * @param tokens\n * @param ignore\n * @returns decoded feature, or null if this is not a valid record\n */\nfunction decodeCustom(tokens, header) {\n\n    const format = header.customFormat\n\n    if (tokens.length < format.fields.length) return undefined\n\n    const coords = format.coords || 0\n\n    const chr = tokens[format.chr]\n    const start = parseInt(tokens[format.start]) - coords\n    const end = format.end !== undefined ? parseInt(tokens[format.end]) : start + 1\n\n    const feature = {chr: chr, start: start, end: end}\n\n    if (format.fields) {\n        format.fields.forEach(function (field, index) {\n\n            if (index !== format.chr &&\n                index !== format.start &&\n                index !== format.end) {\n\n                feature[field] = tokens[index]\n            }\n        })\n    }\n\n    return feature\n\n}\n\n\n// function expandFormat(format) {\n//     const fields = format.fields;\n//     const keys = ['chr', 'start', 'end'];\n//     for (let i = 0; i < fields.length; i++) {\n//         for (let key of keys) {\n//             if (key === fields[i]) {\n//                 format[key] = i;\n//             }\n//         }\n//     }\n//     return format;\n// }\n\nexport {decodeCustom}","/**\n * Decode a gcnv record, a bed style format encoding copy number variation\n *\n * @param tokens\n * @param header\n */\n\nfunction decodeGcnv(tokens, header) {\n\n    const columnNames = header.columnNames\n    if (!columnNames) {\n        throw Error(\"Sample names are not defined.   Missing column headers?\")\n    }\n    const sampleCount = columnNames.length - 3\n\n    const chr = tokens[0]\n    const start = parseInt(tokens[1])\n    const end = parseInt(tokens[2])\n    const values = tokens.slice(3).map(Number)\n\n    if (values.length == sampleCount) {\n        return {\n            chr: chr,\n            start: start,\n            end: end,\n            values: values,\n        }\n    } else {\n        // TODO Throw error?\n        console.warn(`${chr}:${start}-${end} row contains ${values.length} sample columns instead of the expected ${sampleCount} columns. Skipping...`)\n        return undefined\n    }\n}\n\nexport {decodeGcnv}\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport * as TrackUtils from '../util/trackUtils.js'\nimport {decodeBedpe, decodeBedpeDomain, fixBedPE} from './decode/bedpe.js'\nimport {decodeInteract} from \"./decode/interact.js\"\nimport {\n    decodeBed,\n    decodeBedGraph,\n    decodeGenePred,\n    decodeGenePredExt,\n    decodePeak,\n    decodeReflat,\n    decodeRepeatMasker,\n    decodeSNP,\n    decodeWig\n} from \"./decode/ucsc.js\"\nimport {decodeGFF3, decodeGTF} from \"./gff/gff.js\"\nimport {decodeFusionJuncSpan} from \"./decode/fusionJuncSpan.js\"\nimport {decodeGtexGWAS} from \"./decode/gtexGWAS.js\"\nimport {decodeCustom} from \"./decode/custom.js\"\nimport {decodeGcnv} from \"../gcnv/gcnvDecoder.js\"\nimport DecodeError from \"./decode/decodeError.js\"\n\n/**\n *  Parser for column style (tab delimited, etc) text file formats (bed, gff, vcf, etc).\n *\n *\n */\n\n\n/**\n * Return a parser for the given file format.\n */\nclass FeatureParser {\n\n    constructor(config) {\n\n        this.config = config\n        this.header = {}\n        if (config.nameField) {\n            this.header.nameField = config.nameField\n        }\n\n        this.skipRows = 0   // The number of fixed header rows to skip.  Override for specific types as needed\n\n        if (config.decode) {\n            this.decode = config.decode\n            this.delimiter = config.delimiter || \"\\t\"\n        } else if (config.format) {\n            this.header.format = config.format.toLowerCase()\n            this.setDecoder(this.header.format)\n        }\n\n        if (!this.delimiter) {\n            this.delimiter = \"\\t\"\n        }\n    }\n\n    /**\n     * Parse metadata from the file.   A variety of conventions are in use to supply metadata about file contents\n     * through header lines (e.g. 'track') and # directives. This method unifies metadata as properties of a\n     * 'header' object.\n     *\n     * @param data\n     * @returns {{}}\n     */\n    async parseHeader(dataWrapper) {\n\n        let header = this.header\n        let columnNames\n        let line\n        while ((line = await dataWrapper.nextLine()) !== undefined) {\n            if (line.startsWith(\"track\") || line.startsWith(\"#track\")) {\n                let h = parseTrackLine(line)\n                Object.assign(header, h)\n            } else if (line.startsWith(\"browser\")) {\n                // UCSC line, currently ignored\n            } else if (line.startsWith(\"#columns\")) {\n                let h = parseColumnsDirective(line)\n                Object.assign(header, h)\n            } else if (line.startsWith(\"##gff-version 3\")) {\n                header.format = \"gff3\"\n            } else if (line.startsWith(\"#gffTags\")) {\n                header.gffTags = true\n            } else if (line.startsWith(\"fixedStep\") || line.startsWith(\"variableStep\")) {\n                // Wig directives -- we are in the data section\n                break\n            } else if (line.startsWith(\"#\")) {\n                const tokens = line.split(this.delimiter || \"\\t\")\n                if (tokens.length > 1) {\n                    columnNames = tokens   // Possible column names\n                }\n            } else {\n                // All directives that could change the format, and thus decoder, should have been read by now.\n                this.setDecoder(header.format)\n\n                // If the line can be parsed as a feature assume we are beyond the header, if any\n                const tokens = line.split(this.delimiter || \"\\t\")\n                try {\n                    const tmpHeader = Object.assign({columnNames}, header)\n                    if (this.decode(tokens, tmpHeader)) {\n                        break\n                    } else {\n                        if (tokens.length > 1) {\n                            columnNames = tokens // possible column names\n                        }\n                    }\n                } catch (e) {\n                    // Not a feature\n                    if (tokens.length > 1) {\n                        columnNames = tokens // possible column names\n                    }\n                }\n            }\n        }\n\n        if (columnNames) {\n            header.columnNames = columnNames\n            for (let n = 0; n < columnNames.length; n++) {\n                if (columnNames[n] === \"color\" || columnNames[n] === \"colour\") {\n                    header.colorColumn = n\n                } else if (columnNames[n] === \"thickness\") {\n                    header.thicknessColumn = n\n                }\n            }\n        }\n\n        this.header = header    // Directives might be needed for parsing lines\n        return header\n    }\n\n    async parseFeatures(dataWrapper) {\n\n        const allFeatures = []\n        const decode = this.decode\n        const format = this.header.format\n        const delimiter = this.delimiter || \"\\t\"\n        let i = 0\n        let errorCount = 0\n        let line\n        while ((line = await dataWrapper.nextLine()) !== undefined) {\n            i++\n            if (i <= this.skipRows) continue\n\n            if (!line || line.startsWith(\"track\") || line.startsWith(\"#\") || line.startsWith(\"browser\")) {\n                continue\n            } else if (format === \"wig\" && line.startsWith(\"fixedStep\")) {\n                this.header.wig = parseFixedStep(line)\n                continue\n            } else if (format === \"wig\" && line.startsWith(\"variableStep\")) {\n                this.header.wig = parseVariableStep(line)\n                continue\n            }\n\n            const tokens = line.split(delimiter)\n            if (tokens.length < 1) {\n                continue\n            }\n\n            const feature = decode(tokens, this.header)\n\n            if (feature instanceof DecodeError) {\n                errorCount++\n                if (errorCount > 0) {\n                    console.error(`Error parsing line '${line}': ${feature.message}`)\n                }\n                continue\n            }\n\n            if (feature) {\n                allFeatures.push(feature)\n            }\n        }\n\n        // Special hack for bedPE\n        if (decode === decodeBedpe) {\n            fixBedPE(allFeatures)\n        }\n\n        return allFeatures\n\n    }\n\n    setDecoder(format) {\n\n        switch (format) {\n            case \"narrowpeak\":\n            case \"broadpeak\":\n            case \"regionpeak\":\n            case \"peaks\":\n                this.decode = decodePeak\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"bedgraph\":\n                this.decode = decodeBedGraph\n                this.delimiter = /\\s+/\n                break\n            case \"wig\":\n                this.decode = decodeWig\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"gff3\" :\n            case \"gff\":\n                this.decode = decodeGFF3\n                this.delimiter = \"\\t\"\n                break\n            case \"gtf\" :\n                this.decode = decodeGTF\n                this.delimiter = \"\\t\"\n                break\n            case \"fusionjuncspan\":\n                // bhaas, needed for FusionInspector view\n                this.decode = decodeFusionJuncSpan\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"gtexgwas\":\n                this.skipRows = 1\n                this.decode = decodeGtexGWAS\n                this.delimiter = \"\\t\"\n                break\n            case \"refflat\":\n                this.decode = decodeReflat\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"genepred\":\n                this.decode = decodeGenePred\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"genepredext\":\n                this.decode = decodeGenePredExt\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"ensgene\":\n                this.decode = decodeGenePred\n                this.header.shift = 1\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"refgene\":\n                this.decode = decodeGenePredExt\n                this.delimiter = this.config.delimiter || /\\s+/\n                this.header.shift = 1\n                break\n            case \"bed\":\n                this.decode = decodeBed\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"bedpe\":\n            case \"hiccups\":\n                this.decode = decodeBedpe\n                this.delimiter = this.config.delimiter || \"\\t\"\n                break\n            case \"bedpe-domain\":\n                this.decode = decodeBedpeDomain\n                this.headerLine = true\n                this.delimiter = this.config.delimiter || \"\\t\"\n                break\n            case \"bedpe-loop\":\n                this.decode = decodeBedpe\n                this.delimiter = this.config.delimiter || \"\\t\"\n                this.header = {colorColumn: 7}\n                break\n            case \"interact\":\n                this.decode = decodeInteract\n                this.delimiter = this.config.delimiter || /\\s+/\n                break\n            case \"snp\":\n                this.decode = decodeSNP\n                this.delimiter = \"\\t\"\n                break\n            case \"rmsk\":\n                this.decode = decodeRepeatMasker\n                this.delimiter = \"\\t\"\n                break\n            case \"gcnv\":\n                this.decode = decodeGcnv\n                this.delimiter = \"\\t\"\n                break\n            default:\n                const customFormat = TrackUtils.getFormat(format)\n                if (customFormat !== undefined) {\n                    this.decode = decodeCustom\n                    this.header.customFormat = customFormat\n                    this.delimiter = customFormat.delimiter || \"\\t\"\n                } else {\n                    this.decode = decodeBed\n                    this.delimiter = this.config.delimiter || /\\s+/\n                }\n        }\n\n    }\n}\n\nfunction parseTrackLine(line) {\n\n    const properties = {}\n    const tokens = line.split(/(?:\")([^\"]+)(?:\")|([^\\s\"]+)(?=\\s+|$)/g)\n\n    // Clean up tokens array\n    let curr\n    const tmp = []\n    for (let tk of tokens) {\n        if (!tk || tk.trim().length === 0) continue\n        if (tk.endsWith(\"=\")) {\n            curr = tk\n        } else if (curr) {\n            tmp.push(curr + tk)\n            curr = undefined\n        } else {\n            tmp.push(tk)\n        }\n    }\n\n    for (let str of tmp) {\n        if (!str) return\n        var kv = str.split('=', 2)\n        if (kv.length === 2) {\n            const key = kv[0].trim()\n            const value = kv[1].trim()\n            if (properties.hasOwnProperty(key)) {\n                let currentValue = properties[key]\n                if (Array.isArray(currentValue)) {\n                    currentValue.push(value)\n                } else {\n                    properties[key] = [currentValue, value]\n                }\n            } else {\n                properties[key] = value\n            }\n        }\n    }\n    if (\"interact\" == properties[\"type\"]) {\n        properties[\"format\"] = \"interact\"\n    } else if (\"gcnv\" === properties[\"type\"]) {\n        properties[\"format\"] = \"gcnv\"\n    }\n    return properties\n}\n\nfunction parseColumnsDirective(line) {\n\n    let properties = {}\n    let t1 = line.split(/\\s+/)\n\n    if (t1.length === 2) {\n        let t2 = t1[1].split(\";\")\n        t2.forEach(function (keyValue) {\n            let t = keyValue.split(\"=\")\n            if (t[0] === \"color\") {\n                properties.colorColumn = Number.parseInt(t[1]) - 1\n            } else if (t[0] === \"thickness\") {\n                properties.thicknessColumn = Number.parseInt(t[1]) - 1\n            }\n        })\n    }\n\n    return properties\n}\n\nfunction parseFixedStep(line) {\n    const tokens = line.split(/\\s+/)\n    const chrom = tokens[1].split(\"=\")[1]\n    const start = parseInt(tokens[2].split(\"=\")[1], 10) - 1\n    const step = parseInt(tokens[3].split(\"=\")[1], 10)\n    const span = (tokens.length > 4) ? parseInt(tokens[4].split(\"=\")[1], 10) : 1\n    return {format: \"fixedStep\", chrom, start, step, span, index: 0}\n}\n\nfunction parseVariableStep(line) {\n    const tokens = line.split(/\\s+/)\n    const chrom = tokens[1].split(\"=\")[1]\n    const span = tokens.length > 2 ? parseInt(tokens[2].split(\"=\")[1], 10) : 1\n    return {format: \"variableStep\", chrom, span}\n}\n\nconst spaceDelimited = new Set([\n    \"narrowpeak\",\n    \"broadpeak\",\n    \"regionpeak\",\n    \"peaks\",\n    \"fusionjuncspan\",\n    \"bedgraph\",\n    \"wig\",\n    \"refflat\",\n    \"genepred\",\n    \"genepredext\",\n    \"ensgene\",\n    \"refgene\",\n    \"bed\",\n    \"interact\"\n])\n\nexport default FeatureParser\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2018 Regents of the University of California\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {isSimpleType} from \"./util/igvUtils.js\"\nimport {FeatureUtils, FileUtils, StringUtils} from \"../node_modules/igv-utils/src/index.js\"\n\nconst DEFAULT_COLOR = 'rgb(150,150,150)'\n\nconst fixColor = (colorString) => {\n    if (StringUtils.isString(colorString)) {\n        return (colorString.indexOf(\",\") > 0 && !(colorString.startsWith(\"rgb(\") || colorString.startsWith(\"rgba(\"))) ?\n            `rgb(${colorString})` : colorString\n    } else {\n        return colorString\n    }\n}\n\n/**\n * A collection of properties and methods shared by all (or most) track types.\n *\n * @param config\n * @param browser\n * @constructor\n */\nclass TrackBase {\n\n    static defaults = {\n        height: 50,\n        autoHeight: false,\n        visibilityWindow: undefined,   // Identifies property that should be copied from config\n        color: undefined,  // Identifies property that should be copied from config\n        altColor: undefined,  // Identifies property that should be copied from config\n        supportHiDPI: true\n    }\n\n    constructor(config, browser) {\n        this.browser = browser\n        this.init(config)\n    }\n\n    /**\n     * Initialize track properties from the config object.  This method is typically overriden in subclasses, which\n     * will call this implementation as super.init(config).\n     *\n     * @param config\n     */\n    init(config) {\n\n        this.config = config\n\n        if (config.displayMode) {\n            config.displayMode = config.displayMode.toUpperCase()\n        }\n\n        // Set default properties\n        const defaults = Object.assign({}, TrackBase.defaults)\n        if(this.constructor.defaults) {\n            for(let key of Object.keys(this.constructor.defaults)) {\n                defaults[key] = this.constructor.defaults[key]\n            }\n        }\n        for(let key of Object.keys(defaults)) {\n            this[key] = config.hasOwnProperty(key) ? config[key] : defaults[key]\n            if(key === 'color' || key === 'altColor') {\n                this[key] = fixColor(this[key])\n            }\n        }\n\n        if (config.name || config.label) {\n            this.name = config.name || config.label\n        } else if (FileUtils.isFile(config.url)) {\n            this.name = config.url.name\n        } else if (StringUtils.isString(config.url) && !config.url.startsWith(\"data:\")) {\n            this.name = FileUtils.getFilename(config.url)\n        }\n\n        this.url = config.url\n        if(this.config.type) this.type = this.config.type\n        this.id = this.config.id === undefined ? this.name : this.config.id\n        this.order = config.order\n        this.autoscaleGroup = config.autoscaleGroup\n        this.removable = config.removable === undefined ? true : config.removable      // Defaults to true\n        this.minHeight = config.minHeight || Math.min(25, this.height)\n        this.maxHeight = config.maxHeight || Math.max(1000, this.height)\n\n        if (config.onclick) {\n            this.onclick = config.onclick\n            config.onclick = undefined   // functions cannot be saved in sessions, clear it here.\n        }\n\n        if (config.description) {\n            // Override description -- displayed when clicking on track label.  Convert to function if neccessary\n            if (typeof config.description === 'function') {\n                this.description = config.description\n            } else {\n                this.description = () => config.description\n            }\n        }\n\n        // Support for mouse hover text.  This can be expensive, off by default.\n        // this.hoverText = function(clickState) => return tool tip text\n        if (config.hoverTextFields) {\n            this.hoverText = hoverText.bind(this)\n        } else if (typeof this.config.hoverText === 'function') {\n            this.hoverText = this.config.hoverText\n        }\n    }\n\n    get name() {\n        return this._name\n    }\n\n    set name(name) {\n        this._name = name\n        if (this.trackView) {\n            this.trackView.setTrackLabelName(name)\n        }\n    }\n\n    /**\n     * Update track properties from the config object.\n     *\n     * @param config\n     */\n    updateConfig(config) {\n        this.init(config)\n    }\n\n    clearCachedFeatures() {\n        if (this.trackView) {\n            this.trackView.clearCachedFeatures()\n        }\n    }\n\n    updateViews() {\n        if (this.trackView) {\n            this.trackView.updateViews()\n        }\n    }\n\n    /**\n     * Used to create session object for bookmarking, sharing.  Only simple property values (string, number, boolean)\n     * are saved.\n     */\n    getState() {\n\n        const jsonable = (v) => !(v === undefined || typeof v === 'function' || v instanceof File || v instanceof Promise)\n\n        // Create copy of config, minus transient properties (convention is name starts with '_').  Also, all\n        // function properties are transient as they cannot be saved in json\n        const state = {}\n        for (let key of Object.keys(this.config)) {\n            if (!key.startsWith(\"_\") && jsonable(this.config[key])) {\n                state[key] = this.config[key]\n            }\n        }\n\n        // Update original config values with any changes\n        for (let key of Object.keys(state)) {\n            if (key.startsWith(\"_\")) continue   // transient property\n            const value = this[key]\n            if (value && (isSimpleType(value) || typeof value === \"boolean\" || key === \"metadata\")) {\n                state[key] = value\n            }\n        }\n\n        // If user has changed other properties from defaults update state.\n        const defs = TrackBase.defaults\n        if (this.constructor.defaults) {\n            for (let key of Object.keys(this.constructor.defaults)) {\n                defs[key] = this.constructor.defaults[key]\n            }\n        }\n        for (let key of Object.keys(defs)) {\n            if (undefined !== this[key] && defs[key] !== this[key]) {\n                state[key] = this[key]\n            }\n        }\n\n        // Flatten dataRange if present\n        if (!this.autoscale && this.dataRange) {\n            state.min = this.dataRange.min\n            state.max = this.dataRange.max\n        }\n\n        return state\n    }\n\n    get supportsWholeGenome() {\n        return this.config.supportsWholeGenome === true\n    }\n\n    /**\n     * Does the track support sample names.  Current sample aware tracks include VCF (with genotypes), MUT, MAF, and SEG\n     * @returns {boolean}\n     */\n    hasSamples() {\n        return false\n    }\n\n    getGenomeId() {\n        return this.browser.genome ? this.browser.genome.id : undefined\n    }\n\n    /**\n     * Set certain track properties, usually from a \"track\" line.  Not all UCSC properties are supported.\n     *\n     * Track configuration settings have precendence over track line properties, so if both are present ignore the\n     * track line.\n     *\n     * @param properties\n     */\n    setTrackProperties(properties) {\n\n        if (this.disposed) return   // This track was removed during async load\n\n        const tracklineConfg = {}\n        let tokens\n        for (let key of Object.keys(properties)) {\n            switch (key.toLowerCase()) {\n                case \"usescore\":\n                    tracklineConfg.useScore = (\n                        properties[key] === 1 || properties[key] === \"1\" || properties[key] === \"on\" || properties[key] === true)\n                    break\n                case \"visibility\":\n                    //0 - hide, 1 - dense, 2 - full, 3 - pack, and 4 - squish\n                    switch (properties[key]) {\n                        case \"2\":\n                        case \"3\":\n                        case \"pack\":\n                        case \"full\":\n                            tracklineConfg.displayMode = \"EXPANDED\"\n                            break\n                        case \"4\":\n                        case \"squish\":\n                            tracklineConfg.displayMode = \"SQUISHED\"\n                            break\n                        case \"1\":\n                        case \"dense\":\n                            tracklineConfg.displayMode = \"COLLAPSED\"\n                    }\n                    break\n                case \"color\":\n                case \"altcolor\":\n                    tracklineConfg[key] = properties[key].startsWith(\"rgb(\") ? properties[key] : \"rgb(\" + properties[key] + \")\"\n                    break\n                case \"featurevisiblitywindow\":\n                case \"visibilitywindow\":\n                    tracklineConfg.visibilityWindow = Number.parseInt(properties[key])\n                    break\n                case \"maxheightpixels\":\n                    tokens = properties[key].split(\":\")\n                    if (tokens.length === 3) {\n                        tracklineConfg.minHeight = Number.parseInt(tokens[2])\n                        tracklineConfg.height = Number.parseInt(tokens[1])\n                        tracklineConfg.maxHeight = Number.parseInt(tokens[0])\n                    }\n                    break\n                case \"viewlimits\":\n                    if (!this.config.autoscale) {   // autoscale in the config has precedence\n                        tokens = properties[key].split(\":\")\n                        let min = 0\n                        let max\n                        if (tokens.length == 1) {\n                            max = Number(tokens[0])\n                        } else if (tokens.length == 2) {\n                            min = Number(tokens[0])\n                            max = Number(tokens[1])\n                        }\n                        tracklineConfg.autoscale = false\n                        tracklineConfg.dataRange = {min, max}\n                        this.viewLimitMin = min\n                        this.viewLimitMax = max\n                    }\n                case \"name\":\n                    tracklineConfg[key] = properties[key]\n                    break\n                case \"url\":\n                    tracklineConfg[\"infoURL\"] = properties[key]\n                    break\n                case \"type\":\n                    const v = properties[key]\n                    if (UCSCTypeMappings.has(v)) {\n                        tracklineConfg[key] = UCSCTypeMappings.get(v)\n                    } else {\n                        tracklineConfg[key] = v\n                    }\n                    break\n                case \"graphtype\":\n                    tracklineConfg[\"graphType\"] = properties[key]\n                    break\n                default:\n                    tracklineConfg[key] = properties[key]\n            }\n        }\n\n        // Track configuration objects have precedence over track line properties in general.  The \"name\" property\n        // is an exception if it was derived and not explicitly entered (that is derived from the web app from filename).\n        for (let key of Object.keys(tracklineConfg)) {\n\n            if (!this.config.hasOwnProperty(key) || (key === \"name\" && this.config._derivedName)) {\n                let value = tracklineConfg[key]\n                if (\"true\" === value) value = true\n                if (\"false\" === value) value = false\n\n                this[key] = value\n                if (key === \"height\" && this.trackView) {\n                    try {\n                        const h = Number.parseInt(value)\n                        this.trackView.setTrackHeight(h)\n                    } catch (e) {\n                        console.error(e)\n                    }\n                }\n            }\n        }\n    }\n\n    /**\n     * Return the features clicked over.  Default implementation assumes an array of features and only considers\n     * the genomic location.   Overriden by most subclasses.\n     *\n     * @param clickState\n     * @param features\n     * @returns {[]|*[]}\n     */\n    clickedFeatures(clickState) {\n\n        // We use the cached features rather than method to avoid async load.  If the\n        // feature is not already loaded this won't work,  but the user wouldn't be mousing over it either.\n        const features = clickState.viewport.cachedFeatures\n\n        if (!features || !Array.isArray(features) || features.length === 0) {\n            return []\n        }\n\n        const genomicLocation = clickState.genomicLocation\n\n        // When zoomed out we need some tolerance around genomicLocation\n        const tolerance = (clickState.referenceFrame.bpPerPixel > 0.2) ? 3 * clickState.referenceFrame.bpPerPixel : 0.2\n        const ss = genomicLocation - tolerance\n        const ee = genomicLocation + tolerance\n        return (FeatureUtils.findOverlapping(features, ss, ee))\n    }\n\n    /**\n     * Default popup text function -- just extracts string and number properties in random order.\n     * @param feature\n     * @returns {Array}\n     */\n    extractPopupData(feature, genomeId) {\n\n        const filteredProperties = new Set(['row', 'color', 'chr', 'start', 'end', 'cdStart', 'cdEnd', 'strand', 'alpha'])\n        const data = []\n\n        let alleles, alleleFreqs\n        for (let property in feature) {\n\n            if (feature.hasOwnProperty(property) &&\n                !filteredProperties.has(property) &&\n                isSimpleType(feature[property])) {\n\n                let value = feature[property]\n                data.push({name: StringUtils.capitalize(property), value: value})\n\n                if (property === \"alleles\") {\n                    alleles = feature[property]\n                } else if (property === \"alleleFreqs\") {\n                    alleleFreqs = feature[property]\n                }\n            }\n        }\n\n        if (alleles && alleleFreqs) {\n\n            if (alleles.endsWith(\",\")) {\n                alleles = alleles.substr(0, alleles.length - 1)\n            }\n            if (alleleFreqs.endsWith(\",\")) {\n                alleleFreqs = alleleFreqs.substr(0, alleleFreqs.length - 1)\n            }\n\n            let a = alleles.split(\",\")\n            let af = alleleFreqs.split(\",\")\n            if (af.length > 1) {\n                let b = []\n                for (let i = 0; i < af.length; i++) {\n                    b.push({a: a[i], af: Number(af[i])})\n                }\n                b.sort(function (x, y) {\n                    return x.af - y.af\n                })\n\n                let ref = b[b.length - 1].a\n                if (ref.length === 1) {\n                    for (let i = b.length - 2; i >= 0; i--) {\n                        let alt = b[i].a\n                        if (alt.length === 1) {\n                            if (!genomeId) genomeId = this.getGenomeId()\n                            const cravatLink = TrackBase.getCravatLink(feature.chr, feature.start + 1, ref, alt, genomeId)\n                            console.log(cravatLink)\n                            if (cravatLink) {\n                                data.push('<hr/>')\n                                data.push({html: cravatLink})\n                                data.push('<hr/>')\n                            }\n                        }\n                    }\n                }\n            }\n        }\n\n        if (feature.attributes) {\n            for (let key of Object.keys(feature.attributes)) {\n                data.push({name: key, value: feature.attributes[key]})\n            }\n        }\n\n        // final chr position\n        let posString = `${feature.chr}:${StringUtils.numberFormatter(feature.start + 1)}-${StringUtils.numberFormatter(feature.end)}`\n        if (feature.strand) {\n            posString += ` (${feature.strand})`\n        }\n\n        data.push({name: 'Location', value: posString})\n\n        return data\n\n    }\n\n\n    /**\n     * Default track description -- displayed on click of track label.  This can be overriden in the track\n     * configuration, or in subclasses.\n     */\n    description() {\n\n        const wrapKeyValue = (k, v) => `<div class=\"igv-track-label-popup-shim\"><b>${k}: </b>${v}</div>`\n\n        let str = '<div class=\"igv-track-label-popup\">'\n        if (this.url) {\n            if (FileUtils.isFile(this.url)) {\n                str += wrapKeyValue('Filename', this.url.name)\n            } else {\n                str += wrapKeyValue('URL', this.url)\n            }\n        } else {\n            str = this.name\n        }\n        if (this.config) {\n            if (this.config.metadata) {\n                for (let key of Object.keys(this.config.metadata)) {\n                    const value = this.config.metadata[key]\n                    str += wrapKeyValue(key, value)\n                }\n            }\n\n            // Add any config properties that are capitalized\n            for (let key of Object.keys(this.config)) {\n                if (key.startsWith(\"_\")) continue   // transient property\n                let first = key.substr(0, 1)\n                if (first !== first.toLowerCase()) {\n                    const value = this.config[key]\n                    if (value && isSimpleType(value)) {\n                        str += wrapKeyValue(key, value)\n                    }\n                }\n            }\n\n        }\n        str += '</div>'\n        return str\n    }\n\n    /**\n     * Return color for a specific feature of this track.  This default implementation is overriden by subclasses*\n     * @param f\n     * @returns {*|string|string}\n     */\n    getColorForFeature(f) {\n        return (typeof this.color === \"function\") ? this.color(feature) : this.color\n    }\n\n    /**\n     * Track has been permanently removed.  Release resources and other cleanup\n     */\n    dispose() {\n\n        this.disposed = true\n\n        // This should not be neccessary, but in case there is some unknown reference holding onto this track object,\n        // for example in client code, release any resources here.\n        for (let key of Object.keys(this)) {\n            this[key] = undefined\n        }\n    }\n\n    static getCravatLink(chr, position, ref, alt, genomeID) {\n\n        if (\"hg38\" === genomeID || \"GRCh38\" === genomeID) {\n\n            const cravatChr = chr.startsWith(\"chr\") ? chr : \"chr\" + chr\n            return `<a target=\"_blank\" href=\"https://run.opencravat.org/result/nocache/variant.html` +\n                `?chrom=${cravatChr}&pos=${position}&ref_base=${ref}&alt_base=${alt}\"><b>Cravat ${ref}->${alt}</b></a>`\n\n        } else {\n            return undefined\n        }\n    }\n}\n\nfunction hoverText(clickState) {\n\n    if (!this.hoverTextFields) return\n\n    const features = this.clickedFeatures(clickState)\n\n    if (features && features.length > 0) {\n        let str = \"\"\n        for (let i = 0; i < features.length; i++) {\n            if (i === 10) {\n                str += \"; ...\"\n                break\n            }\n            if (!features[i]) continue\n\n            const f = features[i]._f || features[i]\n            if (str.length > 0) str += \"\\n\"\n\n            str = \"\"\n            for (let field of this.hoverTextFields) {\n                if (str.length > 0) str += \"\\n\"\n                if (f.hasOwnProperty(field)) {\n                    str += f[field]\n                } else if (typeof f.getAttribute === \"function\") {\n                    str += f.getAttribute(field)\n                }\n            }\n\n        }\n        return str\n    }\n}\n\n/**\n * Map UCSC track line \"type\" setting to file format.  In igv.js \"type\" refers to the track type, not the input file format\n * @type {Map<string, string>}\n */\nconst UCSCTypeMappings = new Map([\n    [\"wiggle_0\", \"wig\"],\n    [\"bed\", \"bed\"],\n    [\"bigBed\", \"bigBed\"],\n    [\"bigWig\", \"bigWig\"]\n])\nexport default TrackBase\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport TrackBase from \"../trackBase.js\"\n\n\n/**\n *  Define parser for seg files  (.bed, .gff, .vcf, etc).  A parser should implement 2 methods\n *\n *     parseHeader(data) - return an object representing a header.  Details are format specific\n *\n *     parseFeatures(data) - return a list of features\n *\n */\n\n\nclass SegParser {\n\n    constructor(type) {\n        this.type = type || 'seg'   // One of seg, mut, or maf\n\n        switch (this.type) {\n            case 'mut':\n                this.sampleColumn = 3\n                this.chrColumn = 0\n                this.startColumn = 1\n                this.endColumn = 2\n                this.dataColumn = 4\n                break\n            case 'maf':\n                this.sampleColumn = 15\n                this.chrColumn = 4\n                this.startColumn = 5\n                this.endColumn = 6\n                this.dataColumn = 8\n                break\n            default:\n                this.sampleColumn = 0\n                this.chrColumn = 1\n                this.startColumn = 2\n                this.endColumn = 3\n            // Data column determined after reading header\n        }\n    }\n\n    async parseHeader(dataWrapper) {\n        let line\n        while ((line = await dataWrapper.nextLine()) !== undefined) {\n            if (line.startsWith(\"#\")) {\n                // skip\n            } else {\n                const tokens = line.split(\"\\t\")\n                this.header = {headings: tokens}\n                break\n            }\n        }\n        return this.header\n    }\n\n    async parseFeatures(dataWrapper) {\n\n        const allFeatures = []\n        let extraHeaders\n        if (!this.header) {\n            this.header = await this.parseHeader(dataWrapper)  // This will only work for non-indexed files\n        }\n        if ('seg' === this.type) {\n            this.dataColumn = this.header.headings.length - 1\n        }\n        if (this.header.headings.length > 5) {\n            extraHeaders = this.extractExtraColumns(this.header.headings)\n        }\n        const valueColumnName = this.header.headings[this.dataColumn]\n\n        let line\n        while ((line = await dataWrapper.nextLine()) !== undefined) {\n            const tokens = line.split(\"\\t\")\n            const value = ('seg' === this.type) ? Number(tokens[this.dataColumn]) : tokens[this.dataColumn]\n            if (tokens.length > this.dataColumn) {\n                const feature = new SegFeature({\n                    sample: tokens[this.sampleColumn],\n                    chr: tokens[this.chrColumn],\n                    start: parseInt(tokens[this.startColumn]) - 1,\n                    end: parseInt(tokens[this.endColumn]),\n                    value,\n                    valueColumnName\n                })\n                if (extraHeaders) {\n                    const extraValues = this.extractExtraColumns(tokens)\n                    feature.setAttributes({names: extraHeaders, values: extraValues})\n                }\n                allFeatures.push(feature)\n            }\n        }\n        return allFeatures\n    }\n\n    extractExtraColumns(tokens) {\n        const extras = []\n        for (let i = 0; i < tokens.length; i++) {\n            if (i !== this.chrColumn && i !== this.startColumn && i !== this.endColumn && i !== this.sampleColumn) {\n                extras.push(tokens[i])\n            }\n        }\n        return extras\n    }\n\n}\n\nclass SegFeature {\n\n    constructor({sample, chr, start, end, value, valueColumnName}) {\n        this.sample = sample\n        this.chr = chr\n        this.start = start\n        this.end = end\n        this.value = value\n        this.valueColumnName = valueColumnName\n    }\n\n    setAttributes({names, values}) {\n        this.attributeNames = names\n        this.attributeValues = values\n    }\n\n    getAttribute(name) {\n        if (this.attributeNames) {\n            const idx = this.attributeNames.indexOf(name)\n            if (idx >= 0) {\n                return this.attributeValues[idx]\n            }\n        }\n        return undefined\n    }\n\n\n    popupData(type, genomeID) {\n        const filteredProperties = new Set(['chr', 'start', 'end', 'sample', 'value', 'row', 'color', 'sampleKey',\n            'uniqueSampleKey', 'sampleId', 'chromosome', 'uniquePatientKey'])\n        const locationString = (this.chr + \":\" +\n            StringUtils.numberFormatter(this.start + 1) + \"-\" +\n            StringUtils.numberFormatter(this.end))\n        const pd = [\n            {name: \"Sample\", value: this.sample},\n            {name: \"Location\", value: locationString},\n            {name: this.valueColumnName ? StringUtils.capitalize(this.valueColumnName) : \"Value\", value: this.value}\n        ]\n\n        // TODO -- the Cravat stuff should probably be in the track (SegTrack)\n        if (\"mut\" === type && \"hg38\" === genomeID) {\n            const l = this.extractCravatLink(genomeID)\n            if (l) {\n                pd.push('<hr/>')\n                pd.push({html: l})\n                pd.push('<hr/>')\n            }\n        }\n\n        if (this.attributeNames && this.attributeNames.length > 0) {\n            for (let i = 0; i < this.attributeNames.length; i++) {\n                if (!filteredProperties.has(this.attributeNames[i]) & this.valueColumnName !== this.attributeNames[i]) {\n                    pd.push({name: StringUtils.capitalize(this.attributeNames[i]), value: this.attributeValues[i]})\n                }\n            }\n        }\n        return pd\n    }\n\n    extractCravatLink(genomeId) {\n\n        let ref, alt\n        if (this.attributeNames && this.attributeNames.length > 0) {\n            for (let i = 0; i < this.attributeNames.length; i++) {\n                if (!ref && \"Reference_Allele\" === this.attributeNames[i]) {\n                    ref = this.attributeValues[i]\n                }\n                if (!alt && this.attributeNames[i].startsWith(\"Tumor_Seq_Allele\") && this.attributeValues[i] !== ref) {\n                    alt = this.attributeValues[i]\n                }\n                if (ref && alt) {\n                    return TrackBase.getCravatLink(this.chr, this.start + 1, ref, alt, genomeId)\n                }\n            }\n        }\n\n    }\n}\n\n\nexport default SegParser","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport TrackBase from \"../trackBase.js\"\nimport {StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\n/**\n * Create a variant from an array of tokens representing a line in a \"VCF\" file\n * @param tokens\n */\nfunction createVCFVariant(tokens) {\n    const variant = new Variant()\n    variant.chr = tokens[0] // TODO -- use genome aliases\n    variant.pos = parseInt(tokens[1])\n    variant.names = tokens[2]    // id in VCF\n    variant.referenceBases = tokens[3]\n    variant.alternateBases = tokens[4]\n    variant.quality = tokens[5]\n    variant.filter = tokens[6]\n    variant.info = {}\n    const infoStr = tokens[7]\n    if (infoStr) {\n        for (let elem of infoStr.split(';')) {\n            var element = elem.split('=')\n            variant.info[element[0]] = element[1]\n        }\n    }\n    variant.init()\n    return variant\n}\n\n\n/**\n * @deprecated - the GA4GH API has been deprecated.  This code no longer maintained.\n * @param json\n * @returns {Variant}\n */\nfunction createGAVariant(json) {\n\n    var variant = new Variant()\n\n    variant.chr = json.referenceName\n    variant.start = parseInt(json.start)  // Might get overriden below\n    variant.end = parseInt(json.end)      // Might get overriden below\n    variant.pos = variant.start + 1       // GA4GH is 0 based.\n    variant.names = arrayToString(json.names, \"; \")\n    variant.referenceBases = json.referenceBases\n    variant.alternateBases = arrayToString(json.alternateBases)\n    variant.quality = json.quality\n    variant.filter = arrayToString(json.filter)\n\n\n    // Flatten GA4GH attributes array\n    variant.info = {}\n    if (json.info) {\n        Object.keys(json.info).forEach(function (key) {\n            var value,\n                valueArray = json.info[key]\n\n            if (Array.isArray(valueArray)) {\n                value = valueArray.join(\",\")\n            } else {\n                value = valueArray\n            }\n            variant.info[key] = value\n        })\n    }\n\n\n    // Need to build a hash of calls for fast lookup\n    // Note from the GA4GH spec on call ID:\n    //\n    // The ID of the call set this variant call belongs to. If this field is not present,\n    // the ordering of the call sets from a SearchCallSetsRequest over this GAVariantSet\n    // is guaranteed to match the ordering of the calls on this GAVariant.\n    // The number of results will also be the same.\n    variant.calls = {}\n    var order = 0, id\n    if (json.calls) {\n        json.calls.forEach(function (call) {\n            id = call.callSetId\n            variant.calls[id] = call\n            order++\n\n        })\n    }\n\n    init(variant)\n\n    return variant\n\n}\n\n\nclass Variant {\n\n    init() {\n\n        const ref = this.referenceBases\n        const altBases = this.alternateBases\n\n        if (this.info) {\n            if (this.info[\"VT\"]) {\n                this.type = this.info[\"VT\"]\n            } else if (this.info[\"SVTYPE\"]) {\n                this.type = \"SV\"\n            } else if (this.info[\"PERIOD\"]) {\n                this.type = \"STR\"\n            }\n        }\n        if (this.type === undefined) {\n            this.type = determineType(ref, altBases)\n        }\n        if (this.type === \"NONVARIANT\") {\n            this.heterozygosity = 0\n        }\n\n        // Determine start/end coordinates -- these are the coordinates representing the actual variant,\n        // not the leading or trailing reference\n        if (this.info[\"END\"]) {\n            this.start = this.pos - 1\n            if (this.info[\"CHR2\"] && this.info[\"CHR2\"] !== this.chr) {\n                this.end = this.start + 1\n            } else {\n                this.end = Number.parseInt(this.info[\"END\"])\n            }\n        } else {\n            if (this.type === \"NONVARIANT\") {\n                this.start = this.pos - 1      // convert to 0-based coordinate convention\n                this.end = this.start + ref.length\n            } else {\n\n                const altTokens = altBases.split(\",\").filter(token => token.length > 0)\n                this.alleles = []\n                this.start = undefined\n                this.end = undefined\n\n                for (let alt of altTokens) {\n\n                    this.alleles.push(alt)\n\n                    // We don't yet handle  SV and other special alt representations\n                    if (\"SV\" !== this.type && isKnownAlt(alt)) {\n\n                        let altLength = alt.length\n                        let lengthOnRef = ref.length\n                        const lmin = Math.min(altLength, lengthOnRef)\n\n                        // Trim off matching bases.  Try first match, then right -> left,  then any remaining left -> right\n                        let s = 0\n\n                        while (s < lmin && (ref.charCodeAt(s) === alt.charCodeAt(s))) {\n                            s++\n                            altLength--\n                            lengthOnRef--\n                        }\n\n                        // right -> left from end\n                        while (altLength > 0 && lengthOnRef > 0) {\n                            const altIdx = s + altLength - 1\n                            const refIdx = s + lengthOnRef - 1\n                            if (alt.charCodeAt(altIdx) === ref.charCodeAt(refIdx)) {\n                                altLength--\n                                lengthOnRef--\n                            } else {\n                                break\n                            }\n                        }\n\n                        // if any remaining, left -> right\n                        while (altLength > 0 && lengthOnRef > 0) {\n                            const altIdx = s\n                            const refIdx = s\n                            if (alt.charCodeAt(altIdx) === ref.charCodeAt(refIdx)) {\n                                s++\n                                altLength--\n                                lengthOnRef--\n                            } else {\n                                break\n                            }\n                        }\n\n                        const alleleStart = this.pos + s - 1      // -1 for zero based coordinates\n                        const alleleEnd = alleleStart + lengthOnRef\n                        this.start = this.start === undefined ? alleleStart : Math.min(this.start, alleleStart)\n                        this.end = this.end === undefined ? alleleEnd : Math.max(this.end, alleleEnd)\n                    }\n                }\n\n                // Default to single base representation @ position for variant types not otherwise handled\n                if (this.start === undefined) {\n                    this.start = this.pos - 1\n                    this.end = this.pos\n                }\n            }\n        }\n    }\n\n    popupData(genomicLocation, genomeId) {\n\n        const posString = `${StringUtils.numberFormatter(this.pos)}`\n        const locString = this.start === this.end ?\n            `${StringUtils.numberFormatter(this.start)} | ${StringUtils.numberFormatter(this.start + 1)}` :\n            `${StringUtils.numberFormatter(this.start + 1)}-${StringUtils.numberFormatter(this.end)}`\n        const fields = [\n            {name: \"Chr\", value: this.chr},\n            {name: \"Pos\", value: posString},\n            {name: \"Loc\", value: locString},\n            {name: \"ID\", value: this.names ? this.names : \"\"},\n            {name: \"Ref\", value: this.referenceBases},\n            {name: \"Alt\", value: this.alternateBases.replace(\"<\", \"&lt;\")},\n            {name: \"Qual\", value: this.quality},\n            {name: \"Filter\", value: this.filter}\n        ]\n\n        if (\"SNP\" === this.type) {\n            let ref = this.referenceBases\n            if (ref.length === 1) {\n                let altArray = this.alternateBases.split(\",\")\n                for (let alt of altArray) {\n                    if (alt.length === 1) {\n                        let l = TrackBase.getCravatLink(this.chr, this.pos, ref, alt, genomeId)\n                        if (l) {\n                            fields.push('<hr/>')\n                            fields.push({html: l})\n                        }\n                    }\n                }\n            }\n        }\n\n        if (this.hasOwnProperty(\"heterozygosity\")) {\n            fields.push({name: \"Heterozygosity\", value: this.heterozygosity})\n        }\n\n        if (this.info) {\n            fields.push({html: '<hr style=\"border-top: dotted 1px;border-color: #c9c3ba\" />'})\n            for (let key of Object.keys(this.info)) {\n                fields.push({name: key, value: arrayToString(decodeURIComponent(this.info[key]))})\n            }\n        }\n\n        return fields\n    }\n\n    getInfo(tag) {\n        return this.info ? this.info[tag] : undefined;\n    }\n\n    isRefBlock() {\n        return \"NONVARIANT\" === this.type\n    }\n\n}\n\nconst knownAltBases = new Set([\"A\", \"C\", \"T\", \"G\"].map(c => c.charCodeAt(0)))\n\nfunction isKnownAlt(alt) {\n    for (let i = 0; i < alt.length; i++) {\n        if (!knownAltBases.has(alt.charCodeAt(i))) {\n            return false\n        }\n    }\n    return true\n}\n\n\nfunction determineType(ref, altAlleles) {\n    const refLength = ref.length\n    if (altAlleles === undefined) {\n        return \"UNKNOWN\"\n    } else if (altAlleles.trim().length === 0 ||\n        altAlleles === \"<NON_REF>\" ||\n        altAlleles === \"<*>\" ||\n        altAlleles === \".\") {\n        return \"NONVARIANT\"\n    } else {\n        const alleles = altAlleles.split(\",\")\n        const types = alleles.map(function (a) {\n            if (refLength === 1 && a.length === 1) {\n                return \"SNP\"\n            } else {\n                return \"<NON_REF>\" === a ? \"NONVARIANT\" : \"OTHER\"\n            }\n        })\n        let type = types[0]\n        for (let t of types) {\n            if (t !== type) {\n                return \"MIXED\"\n            }\n        }\n        return type\n    }\n}\n\nfunction arrayToString(value, delim) {\n\n    if (delim === undefined) delim = \",\"\n\n    if (!(Array.isArray(value))) {\n        return value\n    }\n    return value.join(delim)\n}\n\n\nexport {createVCFVariant, createGAVariant}\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {createVCFVariant} from \"./variant.js\"\nimport {StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\n/**\n * Parser for VCF files.\n */\n\nclass VcfParser {\n\n    construtor() {\n    }\n\n    async parseHeader(dataWrapper, genome) {\n\n        const header = {}\n\n        header.chrAliasTable = new Map()\n\n        // First line must be file format\n        let line = await dataWrapper.nextLine()\n        if (line.startsWith(\"##fileformat\")) {\n            header.version = line.substr(13)\n        } else {\n            throw new Error(\"Invalid VCF file: missing fileformat line\")\n        }\n\n        while ((line = await dataWrapper.nextLine()) !== undefined) {\n\n            if (line.startsWith(\"#\")) {\n\n                let id\n                const values = {}\n\n                if (line.startsWith(\"##\")) {\n\n                    if (line.startsWith(\"##INFO\") || line.startsWith(\"##FILTER\") || line.startsWith(\"##FORMAT\")) {\n\n                        const ltIdx = line.indexOf(\"<\")\n                        const gtIdx = line.lastIndexOf(\">\")\n\n                        if (!(ltIdx > 2 && gtIdx > 0)) {\n                            console.log(\"Malformed VCF header line: \" + line)\n                            continue\n                        }\n\n                        const type = line.substring(2, ltIdx - 1)\n                        if (!header[type]) header[type] = {}\n\n                        //##INFO=<ID=AF,Number=A,Type=Float,Description=\"Allele frequency based on Flow Evaluator observation counts\">\n                        // ##FILTER=<ID=NOCALL,Description=\"Generic filter. Filtering details stored in FR info tag.\">\n                        // ##FORMAT=<ID=AF,Number=A,Type=Float,Description=\"Allele frequency based on Flow Evaluator observation counts\">\n\n                        const tokens = StringUtils.splitStringRespectingQuotes(line.substring(ltIdx + 1, gtIdx - 1), \",\")\n\n                        for (let token of tokens) {\n                            var kv = token.split(\"=\")\n                            if (kv.length > 1) {\n                                if (kv[0] === \"ID\") {\n                                    id = kv[1]\n                                } else {\n                                    values[kv[0]] = kv[1]\n                                }\n                            }\n                        }\n\n                        if (id) {\n                            header[type][id] = values\n                        }\n                    } else if (line.startsWith(\"##contig\") && genome) {\n                        const idx1 = line.indexOf(\"<ID=\")\n                        let idx2 = line.indexOf(\",\", idx1)\n                        if (idx2 == -1) {\n                            idx2 = line.indexOf(\">\", idx1)\n                        }\n                        const chr = line.substring(idx1 + 4, idx2)\n                        const canonicalChromosome = genome.getChromosomeName(chr)\n                        header.chrAliasTable.set(canonicalChromosome, chr)\n                    } else {\n                        // ignoring other directives\n                    }\n                } else if (line.startsWith(\"#CHROM\")) {\n                    const tokens = line.split(\"\\t\")\n\n                    if (tokens.length > 8) {\n\n                        // call set names -- use column index for id\n                        header.callSets = []\n                        for (let j = 9; j < tokens.length; j++) {\n                            header.callSets.push({id: j, name: tokens[j]})\n                        }\n                    }\n                }\n\n            } else {\n                break\n            }\n\n        }\n\n        this.header = header  // Will need to intrepret genotypes and info field\n\n        return header\n    }\n\n\n    /**\n     * Parse data as a collection of Variant objects.\n     *\n     * @param data\n     * @returns {Array}\n     */\n    async parseFeatures(dataWrapper) {\n\n        const allFeatures = []\n        const callSets = this.header.callSets\n        const nExpectedColumns = 8 + (callSets ? callSets.length + 1 : 0)\n        let line\n        while ((line = await dataWrapper.nextLine()) !== undefined) {\n            if (line && !line.startsWith(\"#\")) {\n\n                const tokens = line.split(\"\\t\")\n                if (tokens.length === nExpectedColumns) {\n                    const variant = createVCFVariant(tokens)\n                    variant.header = this.header       // Keep a pointer to the header to interpret fields for popup text\n                    //variant.line = line              // Uncomment for debugging\n                    allFeatures.push(variant)\n\n                    if (tokens.length > 9) {\n\n                        // Format\n                        const callFields = extractCallFields(tokens[8].split(\":\"))\n\n                        variant.calls = {}\n                        for (let index = 9; index < tokens.length; index++) {\n\n                            const token = tokens[index]\n\n                            const callSet = callSets[index - 9]\n                            const call = {\n                                callSetName: callSet.name,\n                                info: {}\n                            }\n\n                            variant.calls[callSet.id] = call\n\n                            token.split(\":\").forEach(function (callToken, idx) {\n\n                                switch (idx) {\n                                    case callFields.genotypeIndex:\n                                        call.genotype = []\n                                        callToken.split(/[\\|\\/]/).forEach(function (s) {\n                                            call.genotype.push('.' === s ? s : parseInt(s))\n                                        })\n                                        break\n\n                                    default:\n                                        call.info[callFields.fields[idx]] = callToken\n                                }\n                            })\n                        }\n                    }\n\n                    // If this is a structural variant create a complement of this variant for the other end\n                    // The test for \"SV\" is not comprehensive, there is not yet a standard for this\n                    if (variant.info && variant.info.CHR2 && variant.info.END) {\n                        allFeatures.push(svComplement(variant))\n                    }\n                }\n            }\n        }\n\n        return allFeatures\n    }\n}\n\nfunction extractCallFields(tokens) {\n\n    const callFields = {\n        genotypeIndex: -1,\n        fields: tokens\n    }\n    for (let i = 0; i < tokens.length; i++) {\n        if (\"GT\" === tokens[i]) {\n            callFields.genotypeIndex = i\n        }\n    }\n    return callFields\n}\n\nfunction svComplement(v) {\n\n    const chr2 = v.info.CHR2\n    const pos2 = Number.parseInt(v.info.END)\n    return {\n        chr: chr2,\n        start: pos2 - 1,\n        end: pos2,\n        _f: v\n    }\n\n}\n\nexport default VcfParser\n","/**\n * Parser for IGV desktop GWAS files.  See http://software.broadinstitute.org/software/igv/GWAS\n */\nclass GWASParser {\n\n    constructor(config) {\n        // Defaults - can be overriden by header\n        this.config = config\n        if (config.columns) {\n            if (config.columns.chromosome === undefined ||\n                config.columns.position === undefined ||\n                config.columns.value === undefined) {\n                throw Error(\"columns property must define chrCol, posCol, and valueCol\")\n            }\n            this.posCol = config.columns.position - 1\n            this.chrCol = config.columns.chromosome - 1\n            this.valueCol = config.columns.value - 1\n        } else {\n            // Defaults -- can be overriden in header\n            this.posCol = 2\n            this.chrCol = 1\n            this.valueCol = 3\n        }\n    }\n\n    async parseHeader(dataWrapper) {\n        const headerLine = await dataWrapper.nextLine()\n        return this.parseHeaderLine(headerLine)\n    }\n\n    parseHeaderLine(headerLine) {\n        this.columns = headerLine.split(/\\t/)\n        if (!this.config.columns) {\n            for (let i = 0; i < this.columns.length; i++) {\n                const c = this.columns[i].toLowerCase()\n                switch (c) {\n                    case 'chr':\n                    case 'chromosome':\n                    case 'chr_id':\n                        this.chrCol = i\n                        break\n                    case 'bp':\n                    case 'pos':\n                    case 'position':\n                    case 'chr_pos':\n                        this.posCol = i\n                        break\n                    case 'p':\n                    case 'pval':\n                    case 'pvalue':\n                    case 'p-value':\n                    case 'p.value':\n                        this.valueCol = i\n                        break\n                }\n            }\n        }\n        return this.columns\n    }\n\n    async parseFeatures(dataWrapper) {\n\n        const allFeatures = []\n        const headerLine = dataWrapper.nextLine()\n        if (!this.columns) {\n            this.parseHeaderLine(headerLine)\n        }\n        let line\n        while ((line = dataWrapper.nextLine()) !== undefined) {\n            const tokens = line.split(/\\t/)\n            if (tokens.length === this.columns.length) {\n                const chr = tokens[this.chrCol]\n                const start = parseInt(tokens[this.posCol]) - 1\n                const end = start + 1\n                const value = Number(tokens[this.valueCol])\n                allFeatures.push(new GWASFeature({\n                    chr: chr,\n                    start: start,\n                    end: end,\n                    value: value,\n                    line: line,\n                    columns: this.columns\n                }))\n            }\n        }\n        return allFeatures\n    }\n}\n\nclass GWASFeature {\n\n    constructor({chr, start, end, value, line, columns}) {\n        this.chr = chr\n        this.start = start\n        this.end = end\n        this.value = value\n        this.line = line\n        this.columns = columns\n    }\n\n    popupData() {\n        const tokens = this.line.split(/\\t/)\n        return this.columns.map(function (c, index) {\n            return {name: c, value: tokens[index]}\n        })\n    }\n\n    getAttribute(attrName) {\n        const tokens = this.line.split(/\\t/)\n        for (let i = 0; i < this.columns.length; i++) {\n            if (this.columns[i] === attrName) {\n                return tokens[i]\n            }\n        }\n        return undefined\n    }\n\n}\n\nexport default GWASParser\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {IGVColor} from \"../../node_modules/igv-utils/src/index.js\"\n\n/**\n *  Define parsers for bed-like files  (.bed, .gff, .vcf, etc).  A parser should implement 2 methods\n *\n *     parseHeader(data) - return an object representing a header or metadata.  Details are format specific\n *\n *     parseFeatures(data) - return an array of features\n *\n */\n\nvar aedRegexpNoNamespace = new RegExp(\"([^:]*)\\\\(([^)]*)\\\\)\") // name(type) for AED parsing (namespace undefined)\nvar aedRegexpNamespace = new RegExp(\"([^:]*):([^(]*)\\\\(([^)]*)\\\\)\") // namespace:name(type) for AED parsing\n\n\nclass AEDParser {\n\n    constructor(config) {\n        const decode = config ? config.decode : undefined\n        this.nameField = config ? config.nameField : undefined\n        this.skipRows = 0   // The number of fixed header rows to skip.  Override for specific types as needed\n        if (decode) {\n            this.decode = decode\n        } else {\n            this.decode = decodeAed\n        }\n        this.delimiter = \"\\t\"\n    }\n\n    async parseHeader(dataWrapper) {\n        let line\n        let header\n        while (line = await dataWrapper.nextLine()) {\n            if (line.startsWith(\"track\") || line.startsWith(\"#\") || line.startsWith(\"browser\")) {\n                if (line.startsWith(\"track\") || line.startsWith(\"#track\")) {\n                    let h = parseTrackLine(line)\n                    if (header) {\n                        Object.assign(header, h)\n                    } else {\n                        header = h\n                    }\n                } else if (line.startsWith(\"#columns\")) {\n                    let h = parseColumnsDirective(line)\n                    if (header) {\n                        Object.assign(header, h)\n                    } else {\n                        header = h\n                    }\n                } else if (line.startsWith(\"##gff-version 3\")) {\n                    this.format = \"gff3\"\n                    if (!header) header = {}\n                    header[\"format\"] = \"gff3\"\n                }\n            } else {\n                break\n            }\n        }\n        this.header = header    // Directives might be needed for parsing lines\n        return header\n    }\n\n    async parseFeatures(dataWrapper) {\n\n        const allFeatures = []\n        let cnt = 0\n        const decode = this.decode\n        const delimiter = this.delimiter || \"\\t\"\n        let i = 0\n        let line\n        let wig\n\n        while ((line = dataWrapper.nextLine()) !== undefined) {\n            i++\n            if (i <= this.skipRows || line.startsWith(\"track\") || line.startsWith(\"#\") || line.startsWith(\"browser\")) {\n                continue\n            }\n\n            let tokens = readTokensAed()\n            if (tokens.length < 1) {\n                continue\n            }\n\n            if (!this.aed) {\n                // Store information about the aed header in the parser itself\n                // This is done only once - on the first row\n                this.aed = parseAedHeaderRow(tokens)\n                continue\n            }\n\n            const feature = decode.call(this, tokens, wig)\n            if (feature) {\n                allFeatures.push(feature)\n                cnt++\n            }\n        }\n\n        return allFeatures\n\n        // Double quoted strings can contain newlines in AED\n        // \"\" is an escape for a \".\n        // Parse all this, clean it up, split into tokens in a custom way\n        function readTokensAed() {\n            var tokens = [],\n                token = \"\",\n                quotedString = false,\n                n,\n                c\n\n            while (line || line === '') {\n                for (n = 0; n < line.length; n++) {\n                    c = line.charAt(n)\n                    if (c === delimiter) {\n                        if (!quotedString) {\n                            tokens.push(token)\n                            token = \"\"\n                        } else {\n                            token += c\n                        }\n                    } else if (c === \"\\\"\") {\n                        // Look ahead to the next character\n                        if (n + 1 < line.length && line.charAt(n + 1) === \"\\\"\") {\n                            if (quotedString) {\n                                // Turn \"\" into a single \" in the output string\n                                token += \"\\\"\"\n                            } else {\n                                // \"\" on its own means empty string, ignore\n                            }\n                            // Skip the next double quote\n                            n++\n                        } else {\n                            // We know the next character is NOT a double quote, flip our state\n                            quotedString = !quotedString\n                        }\n                    } else {\n                        token += c\n                    }\n                }\n                // We are at the end of the line\n                if (quotedString) {\n                    token += '\\n' // Add newline to the token\n                    line = nextLine() // Keep going\n                } else {\n                    // We can end the loop\n                    break\n                }\n            }\n            // Push the last token\n            tokens.push(token)\n            return tokens\n        }\n    }\n}\n\n\nfunction parseAedToken(value) {\n    // Example: refseq:accessionNumber(aed:String)\n    // refseq - namespace, will be declared later\n    // accessionNumber - name of the field\n    // aed:String - type of the field\n    // The namespace part may be missing\n    var match = aedRegexpNamespace.exec(value)\n    if (match) {\n        return {\n            namespace: match[1],\n            name: match[2],\n            type: match[3]\n        }\n    }\n\n    match = aedRegexpNoNamespace.exec(value)\n    if (match) {\n        return {\n            namespace: '?',\n            name: match[1],\n            type: match[2]\n        }\n    } else {\n        throw new Error(\"Error parsing the header row of AED file - column not in ns:name(ns:type) format\")\n    }\n}\n\nfunction parseAedHeaderRow(tokens) {\n    // First row of AED file defines column names\n    // Each header item is an aed token - see parseAedToken\n    var aed,\n        k,\n        token,\n        aedToken\n\n    // Initialize aed section to be filled in\n    aed = {\n        columns: [ // Information about the namespace, name and type of each column\n            // Example entry:\n            // { namespace: 'bio', name: 'start', type: 'aed:Integer' }\n        ],\n        metadata: { // Metadata about the entire AED file\n            // Example:\n            // {\n            //    aed: {\n            //       application: { value: \"CHaS Browser 3.3.0.139 (r10838)\", type: \"aed:String\" },\n            //       created: { value: \"2018-01-02T10:20:30.123+01:00\", type: \"aed:DateTime\" },\n            //       modified: { value: \"2018-03-04T11:22:33.456+01:00\", type: \"aed:DateTime\" },\n            //    }\n            //    affx: {\n            //       ucscGenomeVersion: { value: \"hg19\", type: \"aed:String\" }\n            //    },\n            //    namespace: {\n            //       omim: { value: \"http://affymetrix.com/ontology/www.ncbi.nlm.nih.gov/omim/\", type: \"aed:URI\" },\n            //       affx: { value: \"http://affymetrix.com/ontology/\", type: \"aed:URI\" },\n            //       refseq: { value: \"http://affymetrix.com/ontology/www.ncbi.nlm.nih.gov/RefSeq/\", type: \"aed:URI\" }\n            //    }\n            // }\n        }\n    }\n    for (k = 0; k < tokens.length; k++) {\n        token = tokens[k]\n        aedToken = parseAedToken(token)\n        aed.columns.push(aedToken)\n    }\n\n    return aed\n}\n\nfunction parseTrackLine(line) {\n\n    const properties = {}\n    const tokens = line.split(/(?:\")([^\"]+)(?:\")|([^\\s\"]+)(?=\\s+|$)/g)\n\n\n    // Clean up tokens array\n    let curr\n    const tmp = []\n    for (let tk of tokens) {\n        if (!tk || tk.trim().length === 0) continue\n        if (tk.endsWith(\"=\") > 0) {\n            curr = tk\n        } else if (curr) {\n            tmp.push(curr + tk)\n            curr = undefined\n        } else {\n            tmp.push(tk)\n        }\n    }\n    for (let str of tmp) {\n        if (!str) return\n        var kv = str.split('=', 2)\n        if (kv.length === 2) {\n            const key = kv[0].trim()\n            const value = kv[1].trim()\n            properties[key] = value\n        }\n\n    }\n\n    return properties\n}\n\nfunction parseColumnsDirective(line) {\n\n    let properties = {}\n    let t1 = line.split(/\\s+/)\n\n    if (t1.length === 2) {\n\n        let t2 = t1[1].split(\";\")\n\n        t2.forEach(function (keyValue) {\n\n            let t = keyValue.split(\"=\")\n\n            if (t[0] === \"color\") {\n                properties.colorColumn = Number.parseInt(t[1]) - 1\n            } else if (t[0] === \"thickness\") {\n                properties.thicknessColumn = Number.parseInt(t[1]) - 1\n            }\n        })\n    }\n\n    return properties\n}\n\nfunction decodeBedGraph(tokens, ignore) {\n\n    var chr, start, end, value\n\n    if (tokens.length < 3) return null\n\n    chr = tokens[0]\n    start = parseInt(tokens[1])\n    end = parseInt(tokens[2])\n    value = Number(tokens[3])\n    const feature = {chr: chr, start: start, end: end, value: value}\n\n    // Optional extra columns\n    if (this.header) {\n        let colorColumn = this.header.colorColumn\n        if (colorColumn && colorColumn < tokens.length) {\n            feature.color = IGVColor.createColorString(tokens[colorColumn])\n        }\n    }\n\n    return feature\n}\n\nfunction parseAttributeString(attributeString, keyValueDelim) {\n    // parse 'attributes' string (see column 9 docs in https://github.com/The-Sequence-Ontology/Specifications/blob/master/gff3.md)\n    var attributes = {}\n    for (let kv of attributeString.split(';')) {\n        const t = kv.trim().split(keyValueDelim, 2)\n        if (t.length === 2) {\n            const key = t[0].trim()\n            let value = t[1].trim()\n            //Strip off quotes, if any\n            if (value.startsWith('\"') && value.endsWith('\"')) {\n                value = value.substr(1, value.length - 2)\n            }\n            attributes[key] = value\n        }\n    }\n    return attributes\n}\n\n/**\n * AED file feature.\n *\n * @param aed link to the AED file object containing file-level metadata and column descriptors\n * @param allColumns All columns as parsed from the AED\n *\n * Other values are parsed one by one\n */\nfunction AedFeature(aed, allColumns) {\n    var token, aedColumn, aedColumns = aed.columns\n\n    // Link to AED file (for metadata)\n    this.aed = aed\n\n    // Unparsed columns from AED file\n    this.allColumns = allColumns\n\n    // Prepare space for the parsed values\n    this.chr = null\n    this.start = null\n    this.end = null\n    this.score = 1000\n    this.strand = '.'\n    this.cdStart = null\n    this.cdEnd = null\n    this.name = null\n    this.color = null\n\n    for (let i = 0; i < allColumns.length; i++) {\n        token = allColumns[i]\n        if (!token) {\n            // Skip empty fields\n            continue\n        }\n        aedColumn = aedColumns[i]\n        if (aedColumn.type === 'aed:Integer') {\n            token = parseInt(token)\n        }\n        var arr = []\n        if (aedColumn.namespace.length > 0) {\n            for (let j = 0; j < aedColumn.namespace.length; j++) {\n                arr.push(aedColumn.namespace.charCodeAt(j))\n            }\n        }\n        if (aedColumn.namespace.trim() === 'bio') {\n            if (aedColumn.name === 'sequence') {\n                this.chr = token\n            } else if (aedColumn.name === 'start') {\n                this.start = token\n            } else if (aedColumn.name === 'end') {\n                this.end = token\n            } else if (aedColumn.name === 'cdsMin') {\n                this.cdStart = token\n            } else if (aedColumn.name === 'cdsMax') {\n                this.cdEnd = token\n            } else if (aedColumn.name === 'strand') {\n                this.strand = token\n            }\n        } else if (aedColumn.namespace === 'aed') {\n            if (aedColumn.name === 'name') {\n                this.name = token\n            }\n        } else if (aedColumn.namespace === 'style') {\n            if (aedColumn.name === 'color') {\n                this.color = IGVColor.createColorString(token)\n            }\n        }\n    }\n}\n\nAedFeature.prototype.popupData = function () {\n    var data = [],\n        aed = this.aed\n    // Just dump everything we have for now\n    for (var i = 0; i < this.allColumns.length; i++) {\n        var featureValue = this.allColumns[i]\n        var name = aed.columns[i].name\n        // Skip columns that are not interesting - you know the sequence, and you can see color\n        if (name !== 'sequence' && name !== 'color') {\n            if (featureValue) {\n                data.push({name: name, value: featureValue})\n            }\n        }\n    }\n    return data\n}\n\n/**\n * Decode the AED file format\n * @param tokens\n * @param ignore\n * @returns decoded feature, or null if this is not a valid record\n */\nfunction decodeAed(tokens, ignore) {\n    var name, value, token,\n        nonEmptyTokens = 0,\n        aedColumns = this.aed.columns,\n        aedColumn,\n        aedKey,\n        i\n\n    // Each aed row must match the exact number of columns or we skip it\n    if (tokens.length !== aedColumns.length) {\n        console.log('Corrupted AED file row: ' + tokens.join(','))\n        return undefined\n    }\n\n    for (i = 0; i < tokens.length; i++) {\n        aedColumn = aedColumns[i]\n        token = tokens[i]\n        if (token !== '') {\n            nonEmptyTokens++\n        }\n        if (aedColumn.name === 'name' && aedColumn.namespace === 'aed') {\n            name = token\n        } else if (aedColumn.name === 'value' && aedColumn.namespace === 'aed') {\n            value = token\n        }\n    }\n\n    if (nonEmptyTokens === 2 && name && value) {\n        // Special row that defines metadata for the entire file\n        aedKey = parseAedToken(name)\n        // Store in the metadata section\n        if (!this.aed.metadata[aedKey.namespace]) {\n            this.aed.metadata[aedKey.namespace] = {}\n        }\n        if (!this.aed.metadata[aedKey.namespace][aedKey.name]) {\n            this.aed.metadata[aedKey.namespace][aedKey.name] = {\n                type: aedKey.type,\n                value: value\n            }\n        }\n        // Ignore this value\n        return undefined\n    }\n\n    var feature = new AedFeature(this.aed, tokens)\n\n    if (!feature.chr || (!feature.start && feature.start !== 0) || !feature.end) {\n        console.log('Cannot parse feature: ' + tokens.join(','))\n        return undefined\n    }\n\n    return feature\n}\n\n\nexport default AEDParser\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n// TODO -- big endian?\n\nclass BinaryParser {\n    constructor(dataView, littleEndian) {\n\n        this.littleEndian = littleEndian !== undefined ? littleEndian : true\n        this.position = 0\n        this.view = dataView\n        this.length = dataView.byteLength\n    }\n\n    available() {\n        return this.length - this.position\n    }\n\n    remLength() {\n        return this.length - this.position\n    }\n\n    hasNext() {\n        return this.position < this.length - 1\n    }\n\n    getByte() {\n        var retValue = this.view.getUint8(this.position, this.littleEndian)\n        this.position++\n        return retValue\n    }\n\n    getShort() {\n\n        var retValue = this.view.getInt16(this.position, this.littleEndian)\n        this.position += 2\n        return retValue\n    }\n\n    getUShort() {\n\n        // var byte1 = this.getByte(),\n        //     byte2 = this.getByte(),\n        //     retValue = ((byte2 << 24 >>> 16) + (byte1 << 24 >>> 24));\n        //     return retValue;\n\n        //\n        var retValue = this.view.getUint16(this.position, this.littleEndian)\n        this.position += 2\n        return retValue\n    }\n\n\n    getInt() {\n\n        var retValue = this.view.getInt32(this.position, this.littleEndian)\n        this.position += 4\n        return retValue\n    }\n\n\n    getUInt() {\n        var retValue = this.view.getUint32(this.position, this.littleEndian)\n        this.position += 4\n        return retValue\n    }\n\n    getLong() {\n\n        // DataView doesn't support long. So we'll try manually\n\n        var b = []\n        b[0] = this.view.getUint8(this.position)\n        b[1] = this.view.getUint8(this.position + 1)\n        b[2] = this.view.getUint8(this.position + 2)\n        b[3] = this.view.getUint8(this.position + 3)\n        b[4] = this.view.getUint8(this.position + 4)\n        b[5] = this.view.getUint8(this.position + 5)\n        b[6] = this.view.getUint8(this.position + 6)\n        b[7] = this.view.getUint8(this.position + 7)\n\n        var value = 0\n        if (this.littleEndian) {\n            for (let i = b.length - 1; i >= 0; i--) {\n                value = (value * 256) + b[i]\n            }\n        } else {\n            for (let i = 0; i < b.length; i++) {\n                value = (value * 256) + b[i]\n            }\n        }\n\n\n        this.position += 8\n        return value\n    }\n\n    getString(len) {\n\n        var s = \"\"\n        var c\n        while ((c = this.view.getUint8(this.position++)) !== 0) {\n            s += String.fromCharCode(c)\n            if (len && s.length === len) break\n        }\n        return s\n    }\n\n    getFixedLengthString(len) {\n\n        var s = \"\"\n        var i\n        var c\n        for (i = 0; i < len; i++) {\n            c = this.view.getUint8(this.position++)\n            if (c > 0) {\n                s += String.fromCharCode(c)\n            }\n        }\n        return s\n    }\n\n    getFixedLengthTrimmedString(len) {\n\n        var s = \"\"\n        var i\n        var c\n        for (i = 0; i < len; i++) {\n            c = this.view.getUint8(this.position++)\n            if (c > 32) {\n                s += String.fromCharCode(c)\n            }\n        }\n        return s\n    }\n\n    getFloat() {\n\n        var retValue = this.view.getFloat32(this.position, this.littleEndian)\n        this.position += 4\n        return retValue\n\n\n    }\n\n    getDouble() {\n\n        var retValue = this.view.getFloat64(this.position, this.littleEndian)\n        this.position += 8\n        return retValue\n    }\n\n    skip(n) {\n\n        this.position += n\n        return this.position\n    }\n\n\n    /**\n     * Return a BGZip (bam and tabix) virtual pointer\n     * TODO -- why isn't 8th byte used ?\n     * @returns {*}\n     */\n    getVPointer() {\n\n        var position = this.position,\n            offset = (this.view.getUint8(position + 1) << 8) | (this.view.getUint8(position)),\n            byte6 = ((this.view.getUint8(position + 6) & 0xff) * 0x100000000),\n            byte5 = ((this.view.getUint8(position + 5) & 0xff) * 0x1000000),\n            byte4 = ((this.view.getUint8(position + 4) & 0xff) * 0x10000),\n            byte3 = ((this.view.getUint8(position + 3) & 0xff) * 0x100),\n            byte2 = ((this.view.getUint8(position + 2) & 0xff)),\n            block = byte6 + byte5 + byte4 + byte3 + byte2\n        this.position += 8\n\n        //       if (block == 0 && offset == 0) {\n        //           return null;\n        //       } else {\n        return new VPointer(block, offset)\n        //       }\n    }\n}\n\nclass VPointer {\n    constructor(block, offset) {\n        this.block = block\n        this.offset = offset\n    }\n\n    isLessThan(vp) {\n        return this.block < vp.block ||\n            (this.block === vp.block && this.offset < vp.offset)\n    }\n\n    isGreaterThan(vp) {\n        return this.block > vp.block ||\n            (this.block === vp.block && this.offset > vp.offset)\n    }\n\n    isEqualTo(vp) {\n        return this.block === vp.block && this.offset === vp.offset\n    }\n\n    print() {\n        return \"\" + this.block + \":\" + this.offset\n    }\n}\n\nexport default BinaryParser\n","function optimizeChunks(chunks, lowest) {\n\n    if (chunks.length === 0) return chunks\n\n    chunks.sort(function (c0, c1) {\n\n        const dif = c0.minv.block - c1.minv.block\n        if (dif !== 0) {\n            return dif\n        } else {\n            return c0.minv.offset - c1.minv.offset\n        }\n    })\n\n    if(chunks.length <= 1) {\n        return chunks\n    }\n\n    // console.log(\"Before trimming \" + chunks.length)\n    // for (let c of chunks) {\n    //     console.log(`${c.minv.block} ${c.minv.offset}  -  ${c.maxv.block} ${c.maxv.offset}`)\n    // }\n\n    if (lowest) {\n        chunks = chunks.filter(c => c.maxv.isGreaterThan(lowest))\n    }\n\n    // console.log(\"Before merging \" + chunks.length)\n    // for (let c of chunks) {\n    //     console.log(`${c.minv.block} ${c.minv.offset}  -  ${c.maxv.block} ${c.maxv.offset}`)\n    // }\n\n    const mergedChunks = []\n    let lastChunk\n    for (let chunk of chunks) {\n\n        if (!lastChunk) {\n            mergedChunks.push(chunk)\n            lastChunk = chunk\n        } else {\n            if (canMerge(lastChunk, chunk)) {\n                if (chunk.maxv.isGreaterThan(lastChunk.maxv)) {\n                    lastChunk.maxv = chunk.maxv\n                }\n            } else {\n                mergedChunks.push(chunk)\n                lastChunk = chunk\n            }\n        }\n    }\n\n    // console.log(\"After merging \" + mergedChunks.length)\n    // for (let c of mergedChunks) {\n    //     console.log(`${c.minv.block} ${c.minv.offset}  -  ${c.maxv.block} ${c.maxv.offset}`)\n    // }\n\n    return mergedChunks\n}\n\n\n/**\n * Merge 2 blocks if the file position gap between them is < 16 kb, and the total size is < ~5 mb\n * @param chunk1\n * @param chunk2\n * @returns {boolean|boolean}\n */\nfunction canMerge(chunk1, chunk2) {\n    const gap = chunk2.minv.block - chunk1.maxv.block\n    const sizeEstimate = chunk1.maxv.block - chunk1.minv.block\n    return sizeEstimate < 5000000\n}\n\nexport {optimizeChunks}\n\n","// Represents a CSI Bam or Tabix index\n\nimport BinaryParser from \"../binary.js\"\nimport {optimizeChunks} from \"./indexUtils.js\"\n\nconst CSI1_MAGIC = 21582659 // CSI\\1\nconst CSI2_MAGIC = 38359875 // CSI\\2\n\nasync function parseCsiIndex(arrayBuffer, genome) {\n\n    const idx = new CSIIndex()\n    idx.parse(arrayBuffer, genome)\n    return idx\n}\n\nclass CSIIndex {\n\n    constructor(tabix) {\n        this.tabix = true   // Means whatever is indexed is BGZipped\n    }\n\n    parse(arrayBuffer, genome) {\n        const parser = new BinaryParser(new DataView(arrayBuffer))\n\n        const magic = parser.getInt()\n\n        if (magic !== CSI1_MAGIC) {\n            if (magic === CSI2_MAGIC) {\n                throw Error(\"CSI version 2 is not supported.  Please enter an issue at https://github.com/igvteam/igv.js\")\n            } else {\n                throw Error(\"Not a CSI index\")\n            }\n        }\n\n        this.indices = []\n        this.blockMin = Number.MAX_SAFE_INTEGER\n        this.lastBlockPosition = []\n        this.sequenceIndexMap = {}\n\n        this.minShift = parser.getInt()\n        this.depth = parser.getInt()\n        const lAux = parser.getInt()\n        const seqNames = []\n        let bmax = 0\n\n        if (lAux >= 28) {\n            // Tabix header parameters aren't used, but they must be read to advance the pointer\n            const format = parser.getInt()\n            const col_seq = parser.getInt()\n            const col_beg = parser.getInt()\n            const col_end = parser.getInt()\n            const meta = parser.getInt()\n            const skip = parser.getInt()\n            const l_nm = parser.getInt()\n            const nameEndPos = parser.position + l_nm\n            let i = 0\n            while (parser.position < nameEndPos) {\n                let seq_name = parser.getString()\n                // Translate to \"official\" chr name.\n                if (genome) {\n                    seq_name = genome.getChromosomeName(seq_name)\n                }\n                this.sequenceIndexMap[seq_name] = i\n                seqNames[i] = seq_name\n                i++\n            }\n        }\n\n        const MAX_BIN = this.bin_limit() + 1\n        const nref = parser.getInt()\n        for (let ref = 0; ref < nref; ref++) {\n            const binIndex = []\n            const loffset = []\n            const nbin = parser.getInt()\n            for (let b = 0; b < nbin; b++) {\n\n                const binNumber = parser.getInt()\n                loffset[binNumber] = parser.getVPointer()\n\n                if (binNumber > MAX_BIN) {\n                    // This is a psuedo bin, not used but we have to consume the bytes\n                    const nchnk = parser.getInt() // # of chunks for this bin\n                    const cs = parser.getVPointer()   // unmapped beg\n                    const ce = parser.getVPointer()   // unmapped end\n                    const n_maped = parser.getLong()\n                    const nUnmapped = parser.getLong()\n\n                } else {\n\n                    binIndex[binNumber] = []\n                    const nchnk = parser.getInt() // # of chunks for this bin\n\n                    for (let i = 0; i < nchnk; i++) {\n                        const cs = parser.getVPointer()    //chunk_beg\n                        const ce = parser.getVPointer()    //chunk_end\n                        if (cs && ce) {\n                            if (cs.block < this.blockMin) {\n                                this.blockMin = cs.block    // Block containing first alignment\n                            }\n                            if (ce.block > bmax) {\n                                bmax = ce.block\n                            }\n                            binIndex[binNumber].push([cs, ce])\n                        }\n                    }\n                }\n            }\n\n            if (nbin > 0) {\n                this.indices[ref] = {\n                    binIndex: binIndex,\n                    loffset: loffset\n                }\n            }\n        }\n        this.lastBlockPosition = bmax\n    }\n\n    get chromosomeNames() {\n        return Object.keys(this.sequenceIndexMap)\n    }\n\n    /**\n     * Fetch blocks for a particular genomic range.  This method is public so it can be unit-tested.\n     *\n     * @param refId  the sequence dictionary index of the chromosome\n     * @param min  genomic start position\n     * @param max  genomic end position\n     * @param return an array of {minv: {filePointer, offset}, {maxv: {filePointer, offset}}\n     */\n    chunksForRange(refId, min, max) {\n\n        const ba = this.indices[refId]\n        if (!ba) {\n            return []\n        } else {\n            const overlappingBins = this.reg2bins(min, max)        // List of bin #s that overlap min, max\n            if (overlappingBins.length == 0) return []\n\n            const chunks = []\n            // Find chunks in overlapping bins.  Leaf bins (< 4681) are not pruned\n            for (let binRange of overlappingBins) {\n                for (let bin = binRange[0]; bin <= binRange[1]; bin++) {\n                    if (ba.binIndex[bin]) {\n                        const binChunks = ba.binIndex[bin]\n                        for (let c of binChunks) {\n                            const cs = c[0]\n                            const ce = c[1]\n                            chunks.push({minv: cs, maxv: ce, bin: bin})\n                        }\n                    }\n                }\n            }\n\n            const lowestOffset = ba.loffset[overlappingBins[0]]\n\n            return optimizeChunks(chunks, lowestOffset)\n        }\n\n    }\n\n    // reg2bins implementation adapted from GMOD/tabix-js  https://github.com/GMOD/tabix-js/blob/master/src/csi.ts\n    reg2bins(beg, end) {\n        beg -= 1 // < convert to 1-based closed\n        if (beg < 1) beg = 1\n        if (end > 2 ** 34) end = 2 ** 34 // 17 GiB ought to be enough for anybody\n        end -= 1\n        let l = 0\n        let t = 0\n        let s = this.minShift + this.depth * 3\n        const bins = []\n        for (; l <= this.depth; s -= 3, t += (1 << l * 3), l += 1) {\n            const b = t + (beg >> s)\n            const e = t + (end >> s)\n            //\n            // ITS NOT CLEAR WHERE THIS TEST CAME FROM,  but maxBinNumber is never set, and its not clear what it represents.\n            // if (e - b + bins.length > this.maxBinNumber)\n            //     throw new Error(\n            //         `query ${beg}-${end} is too large for current binning scheme (shift ${this.minShift}, depth ${this.depth}), try a smaller query or a coarser index binning scheme`,\n            //     )\n            //\n            bins.push([b, e])\n        }\n        return bins\n    }\n\n\n    bin_limit() {\n        return ((1 << (this.depth + 1) * 3) - 1) / 7\n    }\n\n}\n\nexport {parseCsiIndex}","// Represents a BAM or Tabix index.\n\nimport BinaryParser from \"../binary.js\"\nimport {optimizeChunks} from \"./indexUtils.js\"\n\nconst BAI_MAGIC = 21578050\nconst TABIX_MAGIC = 21578324\n\n\nasync function parseBamIndex(arrayBuffer, genome) {\n    const index = new BamIndex()\n    await index.parse(arrayBuffer, false, genome)\n    return index\n}\n\nasync function parseTabixIndex(arrayBuffer, genome) {\n    const index = new BamIndex()\n    await index.parse(arrayBuffer, true, genome)\n    return index\n}\n\nclass BamIndex {\n\n    constructor() {\n\n    }\n\n    async parse(arrayBuffer, tabix, genome) {\n\n        const indices = []\n        let blockMin = Number.MAX_SAFE_INTEGER\n        let blockMax = 0\n        const seqNames = []\n\n        const parser = new BinaryParser(new DataView(arrayBuffer))\n        const magic = parser.getInt()\n        const sequenceIndexMap = {}\n        if (magic === BAI_MAGIC || (tabix && magic === TABIX_MAGIC)) {\n\n            const nref = parser.getInt()\n            if (tabix) {\n                // Tabix header parameters aren't used, but they must be read to advance the pointer\n                const format = parser.getInt()\n                const col_seq = parser.getInt()\n                const col_beg = parser.getInt()\n                const col_end = parser.getInt()\n                const meta = parser.getInt()\n                const skip = parser.getInt()\n                const l_nm = parser.getInt()\n\n                for (let i = 0; i < nref; i++) {\n                    let seq_name = parser.getString()\n                    // Translate to \"official\" chr name.\n                    if (genome) {\n                        seq_name = genome.getChromosomeName(seq_name)\n                    }\n                    sequenceIndexMap[seq_name] = i\n                    seqNames[i] = seq_name\n                }\n            }\n\n            // Loop through sequences\n            for (let ref = 0; ref < nref; ref++) {\n\n                const binIndex = {}\n                const linearIndex = []\n                const nbin = parser.getInt()\n\n                for (let b = 0; b < nbin; b++) {\n                    const binNumber = parser.getInt()\n                    if (binNumber === 37450) {\n                        // This is a psuedo bin, not used but we have to consume the bytes\n                        const nchnk = parser.getInt() // # of chunks for this bin\n                        const cs = parser.getVPointer()   // unmapped beg\n                        const ce = parser.getVPointer()   // unmapped end\n                        const n_maped = parser.getLong()\n                        const nUnmapped = parser.getLong()\n\n                    } else {\n\n                        binIndex[binNumber] = []\n                        const nchnk = parser.getInt() // # of chunks for this bin\n\n                        for (let i = 0; i < nchnk; i++) {\n                            const cs = parser.getVPointer()    //chunk_beg\n                            const ce = parser.getVPointer()    //chunk_end\n                            if (cs && ce) {\n                                if (cs.block < blockMin) {\n                                    blockMin = cs.block    // Block containing first alignment\n                                }\n                                if (ce.block > blockMax) {\n                                    blockMax = ce.block\n                                }\n                                binIndex[binNumber].push([cs, ce])\n                            }\n                        }\n                    }\n                }\n\n                const nintv = parser.getInt()\n                for (let i = 0; i < nintv; i++) {\n                    const cs = parser.getVPointer()\n                    linearIndex.push(cs)   // Might be null\n                }\n\n                if (nbin > 0) {\n                    indices[ref] = {\n                        binIndex: binIndex,\n                        linearIndex: linearIndex\n                    }\n                }\n            }\n\n            this.firstBlockPosition = blockMin\n            this.lastBlockPosition = blockMax\n            this.indices = indices\n            this.sequenceIndexMap = sequenceIndexMap\n            this.tabix = tabix\n\n        } else {\n            throw new Error(indexURL + \" is not a \" + (tabix ? \"tabix\" : \"bai\") + \" file\")\n        }\n\n\n    }\n\n    get chromosomeNames() {\n        return Object.keys(this.sequenceIndexMap)\n    }\n\n    /**\n     * Fetch chunks for a particular genomic range.  This method is public so it can be unit-tested.\n     *\n     * @param refId  the sequence dictionary index of the chromosome\n     * @param min  genomic start position\n     * @param max  genomic end position\n     * @param return an array of objects representing chunks (file spans) {minv: {block, offset}, {maxv: {block, offset}}\n     */\n    chunksForRange(refId, min, max) {\n\n        const bam = this\n        const ba = bam.indices[refId]\n\n        if (!ba) {\n            return []\n        } else {\n            const overlappingBins = reg2bins(min, max)        // List of bin #s that overlap min, max\n\n            //console.log(\"bin ranges\")\n            //for(let b of overlappingBins) {\n            //    console.log(`${b[0]} - ${b[1]}`)\n            //}\n\n            const chunks = []\n            // Find chunks in overlapping bins.  Leaf bins (< 4681) are not pruned\n            for (let binRange of overlappingBins) {\n                for (let bin = binRange[0]; bin <= binRange[1]; bin++) {\n                    if (ba.binIndex[bin]) {\n                        const binChunks = ba.binIndex[bin]\n                        for (let c of binChunks) {\n                            const cs = c[0]\n                            const ce = c[1]\n                            chunks.push({minv: cs, maxv: ce})\n                        }\n                    }\n                }\n            }\n\n            // Use the linear index to find minimum file position of chunks that could contain alignments in the region\n            const nintv = ba.linearIndex.length\n\n            let lowest\n            const minLin = Math.min(min >> 14, nintv - 1)    // i.e. min / 16384\n            const maxLin = Math.min(max >> 14, nintv - 1)\n            for (let i = minLin; i <= maxLin; i++) {\n                const vp = ba.linearIndex[i]\n                if (vp) {\n                    lowest = vp       // lowest file offset that contains alignments overlapping (min, max)\n                    break\n                }\n            }\n\n            return optimizeChunks(chunks, lowest)\n        }\n    }\n}\n\n\n\n/**\n * Calculate the list of bins that overlap with region [beg, end]\n *\n */\nfunction reg2bins(beg, end) {\n    const i = 0\n    let k\n    const list = []\n    if (end >= 1 << 29) end = 1 << 29\n    --end\n    list.push([0, 0])\n    list.push([1 + (beg >> 26), 1 + (end >> 26)])\n    list.push([9 + (beg >> 23), 9 + (end >> 23)])\n    list.push([73 + (beg >> 20), 73 + (end >> 20)])\n    list.push([585 + (beg >> 17), 585 + (end >> 17)])\n    list.push([4681 + (beg >> 14), 4681 + (end >> 14)])\n\n    // for (k = 1 + (beg >> 26); k <= 1 + (end >> 26); ++k) list.push(k);\n    // for (k = 9 + (beg >> 23); k <= 9 + (end >> 23); ++k) list.push(k);\n    // for (k = 73 + (beg >> 20); k <= 73 + (end >> 20); ++k) list.push(k);\n    // for (k = 585 + (beg >> 17); k <= 585 + (end >> 17); ++k) list.push(k);\n    // for (k = 4681 + (beg >> 14); k <= 4681 + (end >> 14); ++k) list.push(k);\n    return list\n}\n\nexport {parseTabixIndex, parseBamIndex}","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport BinaryParser from \"../binary.js\"\n\nconst SEQUENCE_DICTIONARY_FLAG = 0x8000  // if we have a sequence dictionary in our header\n\nasync function parseTribbleIndex(arrayBuffer, genome) {\n\n    const index = new TribbleIndex()\n    index.parse(arrayBuffer, genome)\n    return index\n}\n\nclass TribbleIndex {\n\n    constructor() {\n\n    }\n\n    async parse(arrayBuffer, genome) {\n\n        let blockMax = 0\n        this.chrIndex = {}\n        this.lastBlockPosition = []\n        const parser = new BinaryParser(new DataView(arrayBuffer))\n        readHeader(parser)\n\n        let nChrs = parser.getInt()\n        while (nChrs-- > 0) {\n\n            // todo -- support interval tree index, we're assuming its a linear index\n\n            let chr = parser.getString()\n            if (genome) chr = genome.getChromosomeName(chr) // Translate to canonical name\n\n            const binWidth = parser.getInt()\n            const nBins = parser.getInt()\n            const longestFeature = parser.getInt()\n            const OLD_V3_INDEX = parser.getInt() > 0\n            const nFeatures = parser.getInt()\n\n            // note the code below accounts for > 60% of the total time to read an index\n            let pos = parser.getLong()\n            const blocks = []\n            for (let binNumber = 0; binNumber < nBins; binNumber++) {\n                const nextPos = parser.getLong()\n                const size = nextPos - pos\n                blocks.push({min: pos, max: nextPos}) //        {position: pos, size: size});\n                pos = nextPos\n                if (nextPos > blockMax) {\n                    blockMax = nextPos\n                }\n            }\n            this.chrIndex[chr] = {chr: chr, blocks: blocks, longestFeature: longestFeature, binWidth: binWidth}\n        }\n\n        this.lastBlockPosition = blockMax\n\n\n        /**\n         * Read the header .   Data here is not used in igv.js but we need to read it to advance the pointer.\n         * @param parser\n         */\n        function readHeader(parser) {\n\n            const magicNumber = parser.getInt()     //   view._getInt32(offset += 32, true);\n            const type = parser.getInt()\n            const version = parser.getInt()\n            const indexedFile = parser.getString()\n            const indexedFileSize = parser.getLong()\n            const indexedFileTS = parser.getLong()\n            const indexedFileMD5 = parser.getString()\n            const flags = parser.getInt()\n            if (version < 3 && (flags & SEQUENCE_DICTIONARY_FLAG) === SEQUENCE_DICTIONARY_FLAG) {\n                // readSequenceDictionary(dis);\n            }\n            if (version >= 3) {\n                let nProperties = parser.getInt()\n                while (nProperties-- > 0) {\n                    const key = parser.getString()\n                    const value = parser.getString()\n                }\n            }\n        }\n    }\n\n    get chromosomeNames() {\n        return Object.keys(this.chrIndex)\n    }\n\n\n    /**\n     * Fetch blocks for a particular genomic range.\n     *\n     * @param queryChr the sequence dictionary index of the chromosome\n     * @param min  genomic start position\n     * @param max  genomic end position\n     */\n    chunksForRange(queryChr, min, max) { //function (refId, min, max) {\n\n        const self = this\n        const chrIdx = this.chrIndex[queryChr]\n\n        if (chrIdx) {\n            const blocks = chrIdx.blocks\n            const longestFeature = chrIdx.longestFeature\n            const binWidth = chrIdx.binWidth\n            const adjustedPosition = Math.max(min - longestFeature, 0)\n            const startBinNumber = Math.floor(adjustedPosition / binWidth)\n\n            if (startBinNumber >= blocks.length) // are we off the end of the bin list, so return nothing\n                return []\n            else {\n                const endBinNumber = Math.min(Math.floor((max - 1) / binWidth), blocks.length - 1)\n\n                // By definition blocks are adjacent in the file for the liner index.  Combine them into one merged block\n                const startPos = blocks[startBinNumber].min\n                const endPos = blocks[endBinNumber].max\n                const size = endPos - startPos\n                if (size === 0) {\n                    return []\n                } else {\n                    const mergedBlock = {minv: {block: startPos, offset: 0}, maxv: {block: endPos, offset: 0}}\n                    return [mergedBlock]\n                }\n            }\n        } else {\n            return undefined\n        }\n    }\n}\n\nexport {parseTribbleIndex}\n","import {BGZip, igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\nimport {parseCsiIndex} from \"./csiIndex.js\"\nimport {parseBamIndex, parseTabixIndex} from \"./bamIndex.js\"\nimport {parseTribbleIndex} from \"../feature/tribble.js\"\n\nconst CSI1_MAGIC = 21582659 // CSI\\1\nconst CSI2_MAGIC = 38359875 // CSI\\2\nconst BAI_MAGIC = 21578050\nconst TABIX_MAGIC = 21578324\nconst TRIBBLE_MAGIC = 1480870228   //  byte[]{'T', 'I', 'D', 'X'};\n\n/**\n * @param indexURL\n * @param config\n * @param tabix\n *\n */\nasync function loadIndex(indexURL, config, genome) {\n\n    let arrayBuffer = await igvxhr.loadArrayBuffer(indexURL, buildOptions(config))\n    let dv = new DataView(arrayBuffer)\n\n    // Some indexs are bgzipped, specifically tabix, and csi.  Bam (bai) are not.  Tribble is usually not.\n    // Check first 2 bytes of file for gzip magic number, and inflate if neccessary\n    if (dv.getUint8(0) === 0x1f && dv.getUint8(1) === 0x8b) {    // gzipped\n        const inflate = BGZip.unbgzf(arrayBuffer)\n        arrayBuffer = inflate.buffer\n        dv = new DataView(arrayBuffer)\n    }\n\n    const magic = dv.getInt32(0, true)\n    switch (magic) {\n        case BAI_MAGIC:\n            return parseBamIndex(arrayBuffer, genome)\n        case TABIX_MAGIC:\n            return parseTabixIndex(arrayBuffer, genome)\n        case CSI1_MAGIC:\n            return parseCsiIndex(arrayBuffer, genome)\n        case TRIBBLE_MAGIC:\n            return parseTribbleIndex(arrayBuffer, genome)\n        case CSI2_MAGIC:\n            throw Error(\"CSI version 2 is not supported.\")\n        default:\n            throw Error(`Unrecognized index type: ${indexURL}`)\n    }\n}\n\nexport {loadIndex}","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nfunction getDataWrapper(data) {\n\n    if (typeof (data) == 'string' || data instanceof String) {\n        return new StringDataWrapper(data)\n    } else {\n        return new ByteArrayDataWrapper(data)\n    }\n}\n\n\n// Data might be a string, or an UInt8Array\nclass StringDataWrapper {\n\n    constructor(string) {\n        this.data = string\n        this.ptr = 0\n    }\n\n    nextLine() {\n        var start = this.ptr,\n            idx = this.data.indexOf('\\n', start),\n            data = this.data\n\n        if (idx > 0) {\n            this.ptr = idx + 1   // Advance pointer for next line\n            if (idx > start && data.charAt(idx - 1) === '\\r') {\n                // Trim CR manually in CR/LF sequence\n                return data.substring(start, idx - 1)\n            }\n            return data.substring(start, idx)\n        } else {\n            var length = data.length\n            this.ptr = length\n            // Return undefined only at the very end of the data\n            return (start >= length) ? undefined : data.substring(start)\n        }\n    }\n}\n\nclass ByteArrayDataWrapper {\n\n    constructor(array) {\n        this.data = array\n        this.length = this.data.length\n        this.ptr = 0\n    }\n\n    nextLine() {\n\n        var c, result\n        result = \"\"\n\n        if (this.ptr >= this.length) return undefined\n\n        for (var i = this.ptr; i < this.length; i++) {\n            c = String.fromCharCode(this.data[i])\n            if (c === '\\r') continue\n            if (c === '\\n') break\n            result = result + c\n        }\n\n        this.ptr = i + 1\n        return result\n    }\n\n}\n\nexport default getDataWrapper\n","import {buildOptions} from \"../util/igvUtils.js\"\nimport {BGZip, igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\n\n/**\n * Class to iterate line-by-line over a BGZipped text file.  This class is useful for iterating from the start of\n * the file.  Not useful for indexed queries.\n */\n\nclass BGZLineReader {\n\n    constructor(config) {\n        this.config = config\n        this.filePtr = 0\n        this.bufferPtr = 0\n        this.buffer\n    }\n\n    async nextLine() {\n\n        let result = undefined\n\n        try {\n            while (true) {\n                const length = this.buffer ? this.buffer.length : 0\n                while (this.bufferPtr < length) {\n                    const c = String.fromCharCode(this.buffer[this.bufferPtr++])\n                    if (c === '\\r') continue\n                    if (c === '\\n') {\n                        return result\n                    }\n                    result = result ? result + c : c\n                }\n                if (this.eof) {\n                    return result\n                } else {\n                    await this.readNextBlock()\n                }\n            }\n        } catch (e) {\n            console.warn(e)\n            this.eof = true\n            return result\n        }\n    }\n\n    async readNextBlock() {\n\n        const bsizeOptions = buildOptions(this.config, {\n            range: {\n                start: this.filePtr,\n                size: 26\n            }\n        })\n        const abuffer = await igvxhr.loadArrayBuffer(this.config.url, bsizeOptions)\n        const bufferSize = BGZip.bgzBlockSize(abuffer)\n\n        if (bufferSize === 0) {\n            this.eof = true\n            this.buffer = undefined\n        } else {\n\n            const options = buildOptions(this.config, {range: {start: this.filePtr, size: bufferSize}})\n            const data = await igvxhr.loadArrayBuffer(this.config.url, options)\n            if (data.byteLength < bufferSize) {\n                this.eof = true // Assumption\n            }\n            this.buffer = BGZip.unbgzf(data)\n            if(this.buffer.byteLength == 0) {\n                this.eof = true\n            }\n            this.bufferPtr = 0\n            this.filePtr += data.byteLength //data.byteLength;\n        }\n    }\n\n}\n\nexport default BGZLineReader","import {BGZip, igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\nimport {concatenateArrayBuffers} from \"../util/bufferUtils.js\"\n\nconst FEXTRA = 4  // gzip spec F.EXTRA flag\n\n/**\n * Return the block size for the data buffer.\n * @param data\n * @returns {number}\n */\nconst bgzBlockSize = (data) => {\n    const ba = ArrayBuffer.isView(data) ? data : new Uint8Array(data)\n    const bsize = (ba[17] << 8 | ba[16]) + 1\n    return bsize\n}\n\nclass BGZBlockLoader {\n\n    constructor(config) {\n        this.config = config\n        this.cacheBlocks = false != config.cacheBlocks   // Default to true\n        this.cache = undefined\n    }\n\n    /**\n     * Return inflated data from startBlock through endBlock as an UInt8Array\n     *\n     * @param minv minimum virtual pointer  {block, offset}\n     * @param maxv maximum virtual pointer  {block, offset}\n     * @returns {Promise<Uint8Array>}\n     */\n    async getData(minv, maxv) {\n\n        const startBlock = minv.block\n        const endBlock = maxv.block\n        const skipEnd = maxv.offset === 0\n\n        const blocks = await this.getInflatedBlocks(startBlock, endBlock, skipEnd)\n        if (blocks.length === 1) {\n            return blocks[0]\n        }\n\n        let len = 0\n        for (const b of blocks) {\n            len += b.byteLength\n        }\n        const c = new Uint8Array(len)\n        let offset = 0\n        for (const b of blocks) {\n            c.set(b, offset)\n            offset += b.byteLength\n        }\n        return c\n    }\n\n    /**\n     * Return the inflated data for the specified blocks as an array of Uint8Arrays.  This method is public so\n     * it can be unit tested. *\n     * @param startBlock\n     * @param endBlock\n     * @returns {Promise<*[Uint8Array]>}\n     */\n    async getInflatedBlocks(startBlock, endBlock, skipEnd) {\n\n        if (!this.cacheBlocks) {\n            const buffer = await this.loadBLockData(startBlock, endBlock, {skipEnd})\n            return inflateBlocks(buffer)\n        } else {\n\n            const c = this.cache\n            if (c &&\n                c.startBlock <= startBlock &&\n                (c.endBlock >= endBlock || skipEnd && c.nextEndBlock === endBlock)) {\n                //console.log(\"Complete overlap\")\n                const startOffset = startBlock - c.startBlock\n                const endOffset = endBlock - c.startBlock\n                return inflateBlocks(c.buffer, startOffset, endOffset)\n                // Don't update cache, still valid\n            } else {\n\n                let buffer\n                if (!c || (c.startBlock > endBlock || c.endBlock < startBlock)) {\n                    // no overlap with cache\n                    buffer = await this.loadBLockData(startBlock, endBlock, {skipEnd})\n                } else {\n\n                    //console.log(\"Some overlap\")\n                    const arrayBuffers = []\n\n                    // Load blocks preceding cache start, if any\n                    if (startBlock < c.startBlock) {\n                        // load first blocks\n                        const startBuffer = await this.loadBLockData(startBlock, c.startBlock, {skipEnd: true})\n                        arrayBuffers.push(startBuffer)\n                    }\n\n                    // Slice cached buffer as needed\n                    let cachedBuffer\n                    if (startBlock <= c.startBlock && endBlock >= c.endBlock) {\n                        cachedBuffer = c.buffer\n                    } else {\n                        const start = Math.max(0, startBlock - c.startBlock)\n                        let end\n                        if (endBlock >= c.endBlock) {\n                            end = c.buffer.byteLength\n                        } else {\n                            // We need to find the byte position of the end of \"endBlock\"\n                            const boundaries = findBlockBoundaries(c.buffer)\n                            for (let i = 0; i < boundaries.length - 1; i++) {\n                                if (c.startBlock + boundaries[i] === endBlock) {\n                                    end = boundaries[i + 1]\n                                    break\n                                }\n                            }\n                            // Do something if end not found\n                        }\n                        cachedBuffer = c.buffer.slice(start, end)\n                    }\n                    arrayBuffers.push(cachedBuffer)\n\n                    // Load end blocks, if any\n                    if (endBlock > c.endBlock) {\n                        const endBuffer = await this.loadBLockData(c.endBlock, endBlock, {skipStart: true, skipEnd})\n                        arrayBuffers.push(endBuffer)\n                    }\n\n                    buffer = concatenateArrayBuffers(arrayBuffers)\n                }\n\n                // If skipEnd === true we need to find boundary of last block in cache\n                let nextEndBlock = endBlock\n                if(skipEnd) {\n                    const boundaries = findBlockBoundaries(buffer)\n                    endBlock = boundaries[boundaries.length - 1]\n                }\n\n                this.cache = {startBlock, endBlock, nextEndBlock, buffer}\n                return inflateBlocks(buffer)\n            }\n        }\n    }\n\n    async loadBLockData(startBlock, endBlock, options) {\n\n        const config = this.config\n        const skipStart = options && options.skipStart\n        const skipEnd = options && options.skipEnd\n\n        // Get size of last block if not skipped\n        let lastBlockSize = 0\n        if (!skipEnd) {\n            const bsizeOptions = buildOptions(config, {range: {start: endBlock, size: 26}})\n            const abuffer = await igvxhr.loadArrayBuffer(config.url, bsizeOptions)\n            lastBlockSize = bgzBlockSize(abuffer)\n        }\n\n        if (skipStart) {\n            const bsizeOptions = buildOptions(config, {range: {start: startBlock, size: 26}})\n            const abuffer = await igvxhr.loadArrayBuffer(config.url, bsizeOptions)\n            startBlock += bgzBlockSize(abuffer)\n        }\n\n        // Load data for all blocks\n        const loadOptions = buildOptions(config, {\n            range: {\n                start: startBlock,\n                size: endBlock + lastBlockSize - startBlock\n            }\n        })\n\n        //console.log(`${this.config.name}  Loaded ${startBlock} - ${endBlock + lastBlockSize}   (${(endBlock + lastBlockSize - startBlock) / 1000} kb)`)\n\n        return igvxhr.loadArrayBuffer(config.url, loadOptions)\n    }\n}\n\nfunction findBlockBoundaries(arrayBuffer) {\n\n    const byteLengh = arrayBuffer.byteLength\n    let offset = 0\n    const blockBoundaries = [0]\n    while (offset < byteLengh) {\n        //console.log(\"Cache block \"  + offset)\n        const ba = new Uint8Array(arrayBuffer, offset)\n        const bsize = (ba[17] << 8 | ba[16]) + 1\n        offset += bsize\n        if (offset < byteLengh) {\n            blockBoundaries.push(offset)\n        }\n    }\n    return blockBoundaries\n}\n\n\n/**\n * Inflate compressed blocks within the data buffer*\n * @param data\n * @param startBlock - optional file location for start block.  Default == 0\n * @param endBlock - optional file location for last block to decompress.\n * @returns {*[]}\n */\nfunction inflateBlocks(data, startBlock, endBlock) {\n\n    startBlock = startBlock || 0\n\n    const oBlockList = []\n    let ptr = startBlock\n\n    const lim = data.byteLength - 18\n    while (ptr < lim) {\n        try {\n            //console.log(113873 + ptr)\n            const header = new Uint8Array(data, ptr, 18)\n            const xlen = (header[11] << 8) | (header[10])\n            const bsize = ((header[17] << 8) | (header[16]))  // Total block size, including header, minus 1\n            const start = 12 + xlen + ptr    // Start of CDATA\n            const bytesLeft = data.byteLength - start\n            const cDataSize = bsize - xlen - 18\n\n            if (bytesLeft < cDataSize || cDataSize <= 0) {\n                // This is unexpected.  Throw error?\n                break\n            }\n\n            const cdata = new Uint8Array(data, start, cDataSize)\n            const unc = BGZip.inflateRaw(cdata)\n            oBlockList.push(unc)\n\n            if (endBlock === ptr) {\n                break\n            } else {\n                // Advance to next block\n                ptr += bsize + 1\n            }\n\n        } catch (e) {\n            console.error(e)\n            break\n        }\n    }\n    return oBlockList\n}\n\n/**\n * Concat*\n * @param blocks\n * @returns {Uint8Array}\n */\nfunction concatenateBlocks(blocks) {\n\n    // if (arrays.length === 1) {\n    //     return arrays[0]\n    // }\n\n    let len = 0\n    for (const b of blocks) {\n        len += b.byteLength\n    }\n    const c = new Uint8Array(len)\n    let offset = 0\n    for (const b of blocks) {\n        c.set(b, offset)\n        offset += b.byteLength\n    }\n    return c\n}\n\n\nexport {BGZBlockLoader as default, inflateBlocks, findBlockBoundaries}","\nfunction concatenateArrayBuffers(arrayBuffers) {\n\n    if (arrayBuffers.length === 1) {\n        return arrayBuffers[0]\n    }\n\n    let len = 0\n    for (const b of arrayBuffers) {\n        len += b.byteLength\n    }\n    const c = new Uint8Array(len)\n    let offset = 0\n    for (const b of arrayBuffers) {\n        c.set(new Uint8Array(b), offset)\n        offset += b.byteLength\n    }\n    return c.buffer\n}\n\nexport {concatenateArrayBuffers}","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport FeatureParser from \"./featureParser.js\"\nimport SegParser from \"./segParser.js\"\nimport VcfParser from \"../variant/vcfParser.js\"\nimport {BGZip, FileUtils, igvxhr, URIUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions, isDataURL} from \"../util/igvUtils.js\"\nimport GWASParser from \"../gwas/gwasParser.js\"\nimport AEDParser from \"../aed/AEDParser.js\"\nimport {loadIndex} from \"../bam/indexFactory.js\"\nimport getDataWrapper from \"./dataWrapper.js\"\nimport BGZLineReader from \"../util/bgzLineReader.js\"\nimport BGZBlockLoader from \"../bam/bgzBlockLoader.js\"\n\n/**\n * Reader for \"bed like\" files (tab delimited files with 1 feature per line: bed, gff, vcf, etc)\n *\n * @param config\n * @constructor\n */\nclass FeatureFileReader {\n\n    constructor(config, genome) {\n\n        var uriParts\n\n        this.config = config || {}\n        this.genome = genome\n        this.indexURL = config.indexURL\n        this.indexed = config.indexed || this.indexURL !== undefined\n        this.queryable = this.indexed\n\n        if (FileUtils.isFile(this.config.url)) {\n            this.filename = this.config.url.name\n        } else if (isDataURL(this.config.url)) {\n            this.indexed = false  // by definition\n            this.dataURI = config.url\n        } else {\n            uriParts = URIUtils.parseUri(this.config.url)\n            this.filename = config.filename || uriParts.file\n        }\n\n        this.parser = this.getParser(this.config)\n\n        if (this.config.format === \"vcf\" && !this.config.indexURL) {\n            console.warn(\"Warning: index file not specified.  The entire vcf file will be loaded.\")\n        }\n\n    }\n\n    async defaultVisibilityWindow() {\n        if (this.config.indexURL) {\n            const index = await this.getIndex()\n            if (index && index.lastBlockPosition) {\n                let gl = 0\n                const s = 10000\n                for (let c of index.chromosomeNames) {\n                    const chromosome = this.genome.getChromosome(c)\n                    if (chromosome) {\n                        gl += chromosome.bpLength\n                    }\n                }\n                return Math.round((gl / index.lastBlockPosition) * s)\n            }\n        }\n    }\n\n    /**\n     * Return a promise to load features for the genomic interval\n     * @param chr\n     * @param start\n     * @param end\n     */\n    async readFeatures(chr, start, end) {\n\n        const index = await this.getIndex()\n        if (index) {\n            this.indexed = true\n            return this.loadFeaturesWithIndex(chr, start, end)\n        } else if (this.dataURI) {\n            this.indexed = false\n            return this.loadFeaturesFromDataURI()\n        } else {\n            this.indexed = false\n            return this.loadFeaturesNoIndex()\n        }\n\n    }\n\n    async readHeader() {\n\n        if (this.dataURI) {\n            await this.loadFeaturesFromDataURI(this.dataURI)\n            return this.header\n        } else {\n\n            if (this.config.indexURL) {\n                const index = await this.getIndex()\n                if (!index) {\n                    // Note - it should be impossible to get here\n                    throw new Error(\"Unable to load index: \" + this.config.indexURL)\n                }\n\n                let dataWrapper\n                if (index.tabix) {\n                    this._blockLoader = new BGZBlockLoader(this.config);\n                    dataWrapper = new BGZLineReader(this.config)\n                } else {\n                    // Tribble\n                    const maxSize = Object.values(index.chrIndex)\n                        .flatMap(chr => chr.blocks)\n                        .map(block => block.max)\n                        .reduce((previous, current) =>\n                            Math.min(previous, current), Number.MAX_SAFE_INTEGER)\n\n                    const options = buildOptions(this.config, {bgz: index.tabix, range: {start: 0, size: maxSize}})\n                    const data = await igvxhr.loadString(this.config.url, options)\n                    dataWrapper = getDataWrapper(data)\n                }\n\n\n                this.header = await this.parser.parseHeader(dataWrapper)  // Cache header, might be needed to parse features\n                return this.header\n\n            } else {\n                // If this is a non-indexed file we will load all features in advance\n                const options = buildOptions(this.config)\n                const data = await igvxhr.loadString(this.config.url, options)\n                let dataWrapper = getDataWrapper(data)\n                this.header = await this.parser.parseHeader(dataWrapper)\n\n                // Reset data wrapper and parse features\n                dataWrapper = getDataWrapper(data)\n                this.features = await this.parser.parseFeatures(dataWrapper)   // cache features\n                return this.header\n            }\n        }\n    }\n\n\n    getParser(config) {\n\n        switch (config.format) {\n            case \"vcf\":\n                return new VcfParser(config)\n            case \"seg\" :\n                return new SegParser(\"seg\")\n            case \"mut\":\n                return new SegParser(\"mut\")\n            case \"maf\":\n                return new SegParser(\"maf\")\n            case \"gwas\" :\n                return new GWASParser(config)\n            case \"aed\" :\n                return new AEDParser(config)\n            default:\n                return new FeatureParser(config)\n        }\n    }\n\n    async loadFeaturesNoIndex() {\n\n        if (this.features) {\n            // An optimization hack for non-indexed files, features are temporarily cached when header is read.\n            const tmp = this.features\n            delete this.features\n            return tmp\n        } else {\n            const options = buildOptions(this.config)    // Add oauth token, if any\n            const data = await igvxhr.loadString(this.config.url, options)\n            if (!this.header) {\n                const dataWrapper = getDataWrapper(data)\n                this.header = await this.parser.parseHeader(dataWrapper)\n            }\n            const dataWrapper = getDataWrapper(data)\n            const features = await this.parser.parseFeatures(dataWrapper)   // <= PARSING DONE HERE\n            return features\n        }\n    }\n\n    async loadFeaturesWithIndex(chr, start, end) {\n\n        // insure that header has been loaded -- tabix _blockLoader is initialized as side effect\n        if(!this.dataURI && !this.header) {\n            await this.readHeader()\n        }\n\n        //console.log(\"Using index\"\n        const config = this.config\n        const parser = this.parser\n        const tabix = this.index.tabix\n        const refId = tabix ? this.index.sequenceIndexMap[chr] : chr\n        if (refId === undefined) {\n            return []\n        }\n\n        const genome = this.genome\n        const chunks = this.index.chunksForRange(refId, start, end)\n        if (!chunks || chunks.length === 0) {\n            return []\n        } else {\n            const allFeatures = []\n            for (let chunk of chunks) {\n\n                let inflated\n                if (tabix) {\n                    inflated = await this._blockLoader.getData(chunk.minv, chunk.maxv)\n                } else {\n                    const options = buildOptions(config, {\n                        range: {\n                            start: chunk.minv.block,\n                            size: chunk.maxv.block - chunk.minv.block + 1\n                        }\n                    })\n                    inflated = await igvxhr.loadString(config.url, options)\n                }\n\n                const slicedData = chunk.minv.offset ? inflated.slice(chunk.minv.offset) : inflated\n                const dataWrapper = getDataWrapper(slicedData)\n                let slicedFeatures = await parser.parseFeatures(dataWrapper)\n\n                // Filter psuedo-features (e.g. created mates for VCF SV records)\n                slicedFeatures = slicedFeatures.filter(f => f._f === undefined)\n\n                // Filter features not in requested range.\n                let inInterval = false\n                for (let i = 0; i < slicedFeatures.length; i++) {\n                    const f = slicedFeatures[i]\n\n                    const canonicalChromosome = genome ? genome.getChromosomeName(f.chr) : f.chr\n                    if (canonicalChromosome !== chr) {\n                        if (allFeatures.length === 0) {\n                            continue  //adjacent chr to the left\n                        } else {\n                            break //adjacent chr to the right\n                        }\n                    }\n                    if (f.start > end) {\n                        allFeatures.push(f)  // First feature beyond interval\n                        break\n                    }\n                    if (f.end >= start && f.start <= end) {\n                        if (!inInterval) {\n                            inInterval = true\n                            if (i > 0) {\n                                allFeatures.push(slicedFeatures[i - 1])\n                            } else {\n                                // TODO -- get block before this one for first feature;\n                            }\n                        }\n                        allFeatures.push(f)\n                    }\n                }\n\n            }\n            allFeatures.sort(function (a, b) {\n                return a.start - b.start\n            })\n\n            return allFeatures\n        }\n    }\n\n    async getIndex() {\n        if (this.index) {\n            return this.index\n        } else if (this.config.indexURL) {\n            this.index = await this.loadIndex()\n            return this.index\n        }\n    }\n\n    /**\n     * Return a Promise for the async loaded index\n     */\n    async loadIndex() {\n        const indexURL = this.config.indexURL\n        return loadIndex(indexURL, this.config, this.genome)\n    }\n\n    async loadFeaturesFromDataURI() {\n\n        if (this.features) {\n            // An optimization hack for non-indexed files, features are temporarily cached when header is read.\n            const tmp = this.features\n            delete this.features\n            return tmp\n        } else {\n            const plain = BGZip.decodeDataURI(this.dataURI)\n            let dataWrapper = getDataWrapper(plain)\n            this.header = await this.parser.parseHeader(dataWrapper)\n            if (this.header instanceof String && this.header.startsWith(\"##gff-version 3\")) {\n                this.format = 'gff3'\n            }\n\n            dataWrapper = getDataWrapper(plain)\n            this.features = await this.parser.parseFeatures(dataWrapper)\n            return this.features\n        }\n    }\n\n}\n\nexport default FeatureFileReader\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\nimport {igvxhr, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst isString = StringUtils.isString\n\n\nclass CustomServiceReader {\n    constructor(config) {\n        this.config = config\n    }\n\n    async readFeatures(chr, start, end) {\n\n        let url\n        if (typeof this.config.url === 'function') {\n            url = this.config.url({chr, start, end})\n        } else {\n            url = this.config.url\n                .replace(\"$CHR\", chr)\n                .replace(\"$START\", start)\n                .replace(\"$END\", end)\n        }\n\n        let config = Object.assign({}, this.config)\n        if (this.config.body !== undefined) {\n            if (typeof this.config.body === 'function') {\n                config.body = this.config.body({chr, start, end})\n            } else {\n                config.body =\n                    this.config.body\n                        .replace(\"$CHR\", chr)\n                        .replace(\"$START\", start)\n                        .replace(\"$END\", end)\n            }\n        }\n\n\n        let features\n        const data = await igvxhr.load(url, config)\n        if (data) {\n            if (typeof this.config.parser === \"function\") {\n                features = this.config.parser(data)\n            } else if (isString(data)) {\n                features = JSON.parse(data)\n            } else {\n                features = data\n            }\n        }\n        if (this.config.mappings) {\n            let mappingKeys = Object.keys(this.config.mappings)\n            for (let f of features) {\n                for (let key of mappingKeys) {\n                    f[key] = f[this.config.mappings[key]]\n                }\n            }\n        }\n        return features\n    }\n}\n\nexport default CustomServiceReader\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst UCSCServiceReader = function (config, genome) {\n    this.config = config\n    this.genome = genome\n    this.expandQueryInterval = false\n}\n\nUCSCServiceReader.prototype.readFeatures = function (chr, start, end) {\n\n    const s = Math.max(0, Math.floor(start))\n    let e = Math.ceil(end)\n\n    if (this.genome) {\n        const c = this.genome.getChromosome(chr)\n        if (c && e > c.bpLength) {\n            e = c.bpLength\n        }\n    }\n\n\n    const url = this.config.url + '?db=' + this.config.db + '&table=' + this.config.tableName + '&chr=' + chr + '&start=' + s + '&end=' + e\n\n    return igvxhr.loadJson(url, this.config)\n        .then(function (data) {\n            if (data) {\n                data.forEach(function (sample) {\n                    if (sample.hasOwnProperty('exonStarts') &&\n                        sample.hasOwnProperty('exonEnds') &&\n                        sample.hasOwnProperty('exonCount') &&\n                        sample.hasOwnProperty('cdsStart') &&\n                        sample.hasOwnProperty('cdsEnd')) {\n                        addExons(sample)\n                    }\n                })\n                return data\n            } else {\n                return null\n            }\n        })\n}\n\nfunction addExons(sample) {\n    var exonCount, exonStarts, exonEnds, exons, eStart, eEnd\n    exonCount = sample['exonCount']\n    exonStarts = sample['exonStarts'].split(',')\n    exonEnds = sample['exonEnds'].split(',')\n    exons = []\n\n    for (var i = 0; i < exonCount; i++) {\n        eStart = parseInt(exonStarts[i])\n        eEnd = parseInt(exonEnds[i])\n        var exon = {start: eStart, end: eEnd}\n\n        if (sample.cdsStart > eEnd || sample.cdsEnd < sample.cdsStart) exon.utr = true   // Entire exon is UTR\n        if (sample.cdsStart >= eStart && sample.cdsStart <= eEnd) exon.cdStart = sample.cdsStart\n        if (sample.cdsEnd >= eStart && sample.cdsEnd <= eEnd) exon.cdEnd = sample.cdsEnd\n\n        exons.push(exon)\n    }\n\n    sample.exons = exons\n}\n\nexport default UCSCServiceReader","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2021 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {isExon, isTranscript, isTranscriptPart} from \"./so.js\"\nimport {GFFFeature, GFFTranscript} from \"./gffFeature.js\"\nimport {parseAttributeString} from \"./gff.js\"\n\nconst gffNameFields = [\"Name\", \"gene_name\", \"gene\", \"gene_id\", \"alias\", \"locus\", \"name\"]\n\nclass GFFHelper {\n\n    constructor(options) {\n        this.format = options.format\n        this.nameField = options.nameField\n        this.filterTypes = options.filterTypes === undefined ?\n            new Set(['chromosome']) :\n            new Set(options.filterTypes)\n    }\n\n    combineFeatures(features, genomicInterval) {\n\n        let combinedFeatures\n\n        const filterTypes = this.filterTypes\n        features = features.filter(f => filterTypes === undefined || !filterTypes.has(f.type))\n\n        if (\"gff3\" === this.format) {\n            const tmp = this.combineFeaturesById(features)\n            combinedFeatures = this.combineFeaturesByType(tmp)\n        } else {\n            combinedFeatures = this.combineFeaturesByType(features)\n        }\n        combinedFeatures.sort(function (a, b) {\n            return a.start - b.start\n        })\n        this.numberExons(combinedFeatures, genomicInterval)\n        this.nameFeatures(combinedFeatures)\n        return combinedFeatures\n    }\n\n    /**\n     * Combine multiple non-transcript model features with the same ID on the same chromosome into a single feature.\n     * Features that are part of the transcript model (e.g. exon, mRNA, etc) are combined later.\n     *\n     * @param features\n     * @returns {[]}\n     */\n    combineFeaturesById(features) {\n\n        const chrIdMap = new Map()\n        const combinedFeatures = []\n\n        for (let f of features) {\n            if (isTranscriptPart(f.type) || isTranscript(f.type) || !f.id) {\n                combinedFeatures.push(f)\n            } else {\n                let idMap = chrIdMap.get(f.chr)\n                if (!idMap) {\n                    idMap = new Map()\n                    chrIdMap.set(f.chr, idMap)\n                }\n\n                let featureArray = idMap.get(f.id)\n                if (featureArray) {\n                    featureArray.push(f)\n                } else {\n                    idMap.set(f.id, [f])\n                }\n            }\n        }\n\n        for (let idMap of chrIdMap.values()) {\n            for (let featureArray of idMap.values()) {\n                if (featureArray.length > 1) {\n                    // Use the first feature as prototypical (for column 9 attributes), and adjust start/end\n                    // Parts are represented as \"exons\", as that is how they are presented visually\n                    const cf = featureArray[0]\n                    cf.exons = []\n                    for (let f of featureArray) {\n                        cf.start = Math.min(cf.start, f.start)\n                        cf.end = Math.max(cf.end, f.end)\n                        cf.exons.push({\n                            start: f.start,\n                            end: f.end\n                        })\n                    }\n                    combinedFeatures.push(cf)\n                } else {\n                    combinedFeatures.push(featureArray[0])\n                }\n            }\n        }\n\n        return combinedFeatures\n    }\n\n    combineFeaturesByType(features) {\n\n        // Build dictionary of genes\n        const genes = features.filter(f => \"gene\" === f.type || f.type.endsWith(\"_gene\"))\n        const geneMap = Object.create(null)\n        for (let g of genes) {\n            geneMap[g.id] = g\n        }\n\n        // 1. Build dictionary of transcripts\n        const transcripts = Object.create(null)\n        const combinedFeatures = []\n        const consumedFeatures = new Set()\n        const filterTypes = this.filterTypes\n\n        features = features.filter(f => filterTypes === undefined || !filterTypes.has(f.type))\n\n        for (let f of features) {\n\n            if (f.type === \"biological_region\") {\n                console.log()\n            }\n\n            if (isTranscript(f.type)) {\n                const transcriptId = f.id // getAttribute(f.attributeString, \"transcript_id\", /\\s+/);\n                if (undefined !== transcriptId) {\n                    const gffTranscript = new GFFTranscript(f)\n                    transcripts[transcriptId] = gffTranscript\n                    combinedFeatures.push(gffTranscript)\n                    consumedFeatures.add(f)\n                    const g = geneMap[f.parent]\n                    if (g) {\n                        gffTranscript.geneObject = g\n                        consumedFeatures.add(g)\n                    }\n                }\n            }\n        }\n\n        // Add exons and transcript parts\n        for (let f of features) {\n            if (isTranscriptPart(f.type)) {\n                const parents = getParents(f)\n                if (parents) {\n                    for (let id of parents) {\n\n                        let transcript = transcripts[id]\n                        if (!transcript && this.format === \"gtf\") {\n                            // GTF does not require explicit transcript record, start one with this feature.\n                            const psuedoTranscript = Object.assign({}, f)\n                            psuedoTranscript.type = \"transcript\"\n                            transcript = new GFFTranscript(psuedoTranscript)\n                            transcripts[id] = transcript\n                            combinedFeatures.push(transcript)\n                        }\n                        if (transcript !== undefined) {\n\n                            if (isExon(f.type)) {\n                                if (parents.length > 1) {\n                                    // Make a copy as exon can be modified differently by CDS, etc, for each transcript\n                                    const e2 = new GFFFeature(f)\n                                    transcript.addExon(e2)\n                                } else {\n                                    transcript.addExon(f)\n                                }\n                            } else {\n                                transcript.addPart(f)\n                            }\n                            consumedFeatures.add(f)\n                        }\n                    }\n                }\n            }\n        }\n\n        // Finish transcripts\n        combinedFeatures.forEach(function (f) {\n            if (typeof f.finish === \"function\") {\n                f.finish()\n            }\n        })\n\n        // Add other features\n        const others = features.filter(f => !consumedFeatures.has(f))\n        for (let f of others) {\n            combinedFeatures.push(f)\n        }\n\n        return combinedFeatures\n\n        function getParents(f) {\n            if (f.parent && f.parent.trim() !== \"\") {\n                return f.parent.trim().split(\",\")\n            } else {\n                return null\n            }\n        }\n    }\n\n    numberExons(features, genomicInterval) {\n\n        for (let f of features) {\n            if (f.exons &&\n                (!genomicInterval ||\n                    (f.end <= genomicInterval.end && f.start > genomicInterval.start))) {\n                for (let i = 0; i < f.exons.length; i++) {\n                    const exon = f.exons[i]\n                    exon.number = f.strand === \"-\" ? f.exons.length - i : i + 1\n                }\n            }\n        }\n    }\n\n    nameFeatures(features) {\n        // Find name (label) property\n        for (let f of features) {\n            if (f.attributeString) {\n                const delim = ('gff3' === this.format) ? '=' : ' '\n                const attributes = parseAttributeString(f.attributeString, delim)\n                const attributesMap = new Map(attributes)\n                if (this.nameField) {\n                    f.name = attributesMap.get(this.nameField)\n                } else {\n                    for (let nameField of gffNameFields) {\n                        if (attributesMap.has(nameField)) {\n                            f.name = attributesMap.get(nameField)\n                            break\n                        }\n                    }\n                }\n            }\n        }\n    }\n}\n\n\nexport default GFFHelper\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2015 UC San Diego\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst GtexReader = function (config) {\n\n    this.config = config\n    this.url = config.url\n    this.tissueId = config.tissueSiteDetailId\n    this.indexed = true\n    this.datasetId = config.datasetId || \"gtex_v8\"\n}\n\nGtexReader.prototype.readFeatures = async function (chr, bpStart, bpEnd) {\n\n\n    let self = this,\n        queryChr = chr.startsWith(\"chr\") ? chr : \"chr\" + chr,\n        queryStart = Math.floor(bpStart),\n        queryEnd = Math.ceil(bpEnd),\n        datasetId = this.datasetId,\n        queryURL = this.url + \"?chromosome=\" + queryChr + \"&start=\" + queryStart + \"&end=\" + queryEnd +\n            \"&tissueSiteDetailId=\" + this.tissueId + \"&datasetId=\" + datasetId\n\n    const json = await igvxhr.loadJson(queryURL, {\n        withCredentials: self.config.withCredentials\n    })\n    if (json && json.singleTissueEqtl) {\n        //variants = json.variants;\n        //variants.sort(function (a, b) {\n        //    return a.POS - b.POS;\n        //});\n        //source.cache = new FeatureCache(chr, queryStart, queryEnd, variants);\n\n        json.singleTissueEqtl.forEach(function (eqtl) {\n            eqtl.chr = eqtl.chromosome\n            eqtl.position = eqtl.pos\n            eqtl.start = eqtl.pos - 1\n            eqtl.end = eqtl.start + 1\n            eqtl.snp = eqtl.snpId\n            eqtl.geneName = eqtl.geneSymbol\n            eqtl.geneId = eqtl.gencodeId\n\n        })\n\n        return json.singleTissueEqtl\n    } else {\n        return undefined\n    }\n}\n\nexport default GtexReader","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\n\n// Experimental class for fetching features from an mpg webservice.\n// http://immvar.broadinstitute.org:3000/load_data?chromosome=&start=&end=&categories=\n\nconst ImmVarReader = function (config) {\n\n    this.config = config\n    this.url = config.url\n    this.cellConditionId = config.cellConditionId\n    this.valueThreshold = config.valueThreshold ? config.valueThreshold : 5E-2\n\n}\n\nImmVarReader.prototype.readFeatures = function (queryChr, queryStart, queryEnd) {\n\n    var self = this,\n        queryURL = this.url + \"?chromosome=\" + queryChr + \"&start=\" + queryStart + \"&end=\" + queryEnd +\n            \"&cell_condition_id=\" + this.cellConditionId\n\n    return new Promise(function (fulfill, reject) {\n        igvxhr.loadJson(queryURL, {\n            withCredentials: self.config.withCredentials\n        }).then(function (json) {\n\n            if (json) {\n                //variants = json.variants;\n                //variants.sort(function (a, b) {\n                //    return a.POS - b.POS;\n                //});\n                //source.cache = new FeatureCache(chr, queryStart, queryEnd, variants);\n\n                json.eqtls.forEach(function (eqtl) {\n                    eqtl.chr = eqtl.chromosome\n                    eqtl.start = eqtl.position\n                    eqtl.end = eqtl.position + 1\n                })\n\n                fulfill(json.eqtls)\n            } else {\n                fulfill(null)\n            }\n\n        }).catch(function (error) {\n            reject(error)\n        })\n\n    })\n}\n\nexport default ImmVarReader\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst apiKey = igvxhr.apiKey\n\nfunction ga4ghGet(options) {\n    var url = options.url + \"/\" + options.entity + \"/\" + options.entityId\n    options.headers = ga4ghHeaders()\n    return igvxhr.loadJson(url, options)      // Returns a promise\n}\n\nfunction ga4ghSearch(options) {\n\n    return new Promise(function (fulfill, reject) {\n        var results = options.results ? options.results : [],\n            url = options.url,\n            body = options.body,\n            decode = options.decode,\n            paramSeparator = \"?\",\n            fields = options.fields  // Partial response\n\n\n        if (apiKey) {\n            url = url + paramSeparator + \"key=\" + apiKey\n            paramSeparator = \"&\"\n        }\n\n        if (fields) {\n            url = url + paramSeparator + \"fields=\" + fields\n        }\n\n\n        // Start the recursive load cycle.  Data is fetched in chunks, if more data is available a \"nextPageToken\" is returned.\n        return loadChunk()\n\n        function loadChunk(pageToken) {\n\n            if (pageToken) {\n                body.pageToken = pageToken\n            } else {\n                if (body.pageToken !== undefined) delete body.pageToken    // Remove previous page token, if any\n            }\n\n            var sendData = JSON.stringify(body)\n\n            igvxhr.loadJson(url, {\n                sendData: sendData,\n                contentType: \"application/json\",\n                headers: ga4ghHeaders(),\n                //    oauthToken: ga4ghToken()\n            })\n                .then(function (json) {\n                    var nextPageToken, tmp\n\n                    if (json) {\n\n                        tmp = decode ? decode(json) : json\n\n                        if (tmp) {\n\n                            tmp.forEach(function (a) {\n                                var keep = true           // TODO -- conditionally keep (downsample)\n                                if (keep) {\n                                    results.push(a)\n                                }\n                            })\n                        }\n\n\n                        nextPageToken = json[\"nextPageToken\"]\n\n                        if (nextPageToken) {\n                            loadChunk(nextPageToken)\n                        } else {\n                            fulfill(results)\n                        }\n                    } else {\n                        fulfill(results)\n                    }\n\n                })\n                .catch(function (error) {\n                    reject(error)\n                })\n        }\n\n    })\n\n\n}\n\nfunction ga4ghSearchReadGroupSets(options) {\n\n    ga4ghSearch({\n        url: options.url + \"/readgroupsets/search\",\n        body: {\n            \"datasetIds\": [options.datasetId],\n\n            \"pageSize\": \"10000\"\n        },\n        decode: function (json) {\n            return json.readGroupSets\n        }\n    }).then(function (results) {\n        options.success(results)\n    }).catch(function (error) {\n        console.log(error)\n    })\n}\n\nfunction ga4ghSearchVariantSets(options) {\n\n    ga4ghSearch({\n        url: options.url + \"/variantsets/search\",\n        body: {\n            \"datasetIds\": [options.datasetId],\n            \"pageSize\": \"10000\"\n        },\n        decode: function (json) {\n            return json.variantSets\n        }\n    }).then(function (results) {\n        options.success(results)\n    }).catch(function (error) {\n        console.log(error)\n    })\n}\n\nfunction ga4ghSearchCallSets(options) {\n\n    // When searching by dataset id, first must get variant sets.\n    if (options.datasetId) {\n\n        ga4ghSearchVariantSets({\n\n            url: options.url,\n            datasetId: options.datasetId,\n            success: function (results) {\n\n                var variantSetIds = []\n                results.forEach(function (vs) {\n                    variantSetIds.push(vs.id)\n                })\n\n                // Substitute variantSetIds for datasetId\n                options.datasetId = undefined\n                options.variantSetIds = variantSetIds\n                ga4ghSearchCallSets(options)\n\n\n            }\n        })\n\n    } else {\n\n        ga4ghSearch({\n            url: options.url + \"/callsets/search\",\n            body: {\n                \"variantSetIds\": options.variantSetIds,\n                \"pageSize\": \"10000\"\n            },\n            decode: function (json) {\n\n                if (json.callSets) json.callSets.forEach(function (cs) {\n                    cs.variantSetIds = options.variantSetIds\n                })\n\n                return json.callSets\n            }\n        }).then(function (results) {\n            options.success(results)\n        }).catch(function (error) {\n            console.log(error)\n        })\n    }\n}\n\nfunction ga4ghSearchReadAndCallSets(options) {\n\n    ga4ghSearchReadGroupSets({\n        url: options.url,\n        datasetId: options.datasetId,\n        success: function (readGroupSets) {\n            ga4ghSearchCallSets({\n                url: options.url,\n                datasetId: options.datasetId,\n                success: function (callSets) {\n\n                    // Merge call sets and read group sets\n\n                    var csHash = {}\n                    callSets.forEach(function (cs) {\n                        csHash[cs.name] = cs\n                    })\n\n                    var mergedResults = []\n                    readGroupSets.forEach(function (rg) {\n                        var m = {readGroupSetId: rg.id, name: rg.name, datasetId: options.datasetId},\n                            cs = csHash[rg.name]\n                        if (cs) {\n                            m.callSetId = cs.id\n                            m.variantSetIds = cs.variantSetIds\n                        }\n                        mergedResults.push(m)\n                    })\n\n                    options.success(mergedResults)\n\n                }\n            })\n        }\n    })\n\n}\n\nfunction ga4ghHeaders() {\n    return {\n        \"Cache-Control\": \"no-cache\"\n    }\n}\n\nexport {\n    ga4ghGet, ga4ghSearch, ga4ghSearchReadGroupSets, ga4ghSearchVariantSets,\n    ga4ghSearchCallSets, ga4ghSearchReadAndCallSets\n}\n\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {ga4ghGet, ga4ghSearch} from './ga4ghHelper.js'\nimport {createGAVariant} from \"../variant/variant.js\"\n\nconst Ga4ghVariantReader = function (config, genome) {\n\n    this.config = config\n    this.genome = genome\n    this.url = config.url\n    this.variantSetId = config.variantSetId\n    this.callSetIds = config.callSetIds\n    this.includeCalls = (config.includeCalls === undefined ? true : config.includeCalls)\n\n}\n\n// Simulate a VCF file header\nGa4ghVariantReader.prototype.readHeader = function () {\n\n    var self = this\n\n\n    if (self.header) {\n        return Promise.resolve(self.header)\n    } else {\n\n        self.header = {}\n\n        if (self.includeCalls === false) {\n            return Promise.resolve(self.header)\n        } else {\n\n            var readURL = self.url + \"/callsets/search\"\n\n            return ga4ghSearch({\n                url: readURL,\n                fields: \"nextPageToken,callSets(id,name)\",\n                body: {\n                    \"variantSetIds\": (Array.isArray(self.variantSetId) ? self.variantSetId : [self.variantSetId]),\n                    \"pageSize\": \"10000\"\n                },\n                decode: function (json) {\n                    // If specific callSetIds are specified filter to those\n                    if (self.callSetIds) {\n                        var callSets = [],\n                            csIdSet = new Set()\n\n                        self.callSetIds.forEach(function (csid) {\n                            csIdSet.add(csid)\n                        })\n\n                        json.callSets.forEach(function (cs) {\n                            if (csIdSet.has(cs.id)) {\n                                callSets.push(cs)\n                            }\n                        })\n                        return callSets\n                    } else {\n                        return json.callSets\n                    }\n                }\n            })\n                .then(function (callSets) {\n                    self.header.callSets = callSets\n                    return self.header\n                })\n        }\n    }\n}\n\n\nGa4ghVariantReader.prototype.readFeatures = function (chr, bpStart, bpEnd) {\n\n    const self = this\n    const genome = this.genome\n\n    return self.readHeader()\n\n        .then(function (header) {\n            return getChrAliasTable()\n        })\n\n        .then(function (chrAliasTable) {\n\n            var queryChr = chrAliasTable.hasOwnProperty(chr) ? chrAliasTable[chr] : chr,\n                readURL = self.url + \"/variants/search\"\n\n            return ga4ghSearch({\n                url: readURL,\n                fields: (self.includeCalls ? undefined : \"nextPageToken,variants(id,variantSetId,names,referenceName,start,end,referenceBases,alternateBases,quality,filter,info)\"),\n                body: {\n                    \"variantSetIds\": (Array.isArray(self.variantSetId) ? self.variantSetId : [self.variantSetId]),\n                    \"callSetIds\": (self.callSetIds ? self.callSetIds : undefined),\n                    \"referenceName\": queryChr,\n                    \"start\": bpStart.toString(),\n                    \"end\": bpEnd.toString(),\n                    \"pageSize\": \"10000\"\n                },\n                decode: function (json) {\n\n                    var v\n\n                    var variants = []\n\n                    json.variants.forEach(function (json) {\n\n                        v = createGAVariant(json)\n\n                        if (!v.isRefBlock()) {\n                            variants.push(v)\n                        }\n                    })\n\n                    return variants\n                }\n            })\n        })\n\n\n    function getChrAliasTable() {\n\n        return new Promise(function (fulfill, reject) {\n\n            if (self.chrAliasTable) {\n                fulfill(self.chrAliasTable)\n            } else {\n                self.readMetadata().then(function (json) {\n\n                    self.metadata = json.metadata\n                    self.chrAliasTable = {}\n\n                    if (json.referenceBounds && genome) {\n\n                        json.referenceBounds.forEach(function (rb) {\n                            var refName = rb.referenceName,\n                                alias = genome.getChromosomeName(refName)\n                            self.chrAliasTable[alias] = refName\n\n                        })\n                    }\n                    fulfill(self.chrAliasTable)\n\n                })\n            }\n\n        })\n    }\n\n}\n\n\nGa4ghVariantReader.prototype.readMetadata = function () {\n\n    return ga4ghGet({\n        url: this.url,\n        entity: \"variantsets\",\n        entityId: this.variantSetId\n    })\n}\n\nexport default Ga4ghVariantReader\n","import {igvxhr, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\nclass CivicReader {\n\n    constructor(config) {\n        this.config = config\n    }\n\n    async readFeatures(chr, start, end) {\n\n        const json = await igvxhr.loadJson(this.config.url + \"/variants/?count=50000\")\n        const records = json.records\n        const features = []\n\n        for (let record of records) {\n\n            if (record.coordinates) {\n\n                const id = record.id\n                const coordinates = record.coordinates\n\n                if (coordinates.chromosome) {\n                    features.push(\n                        new CivicVariant(\n                            coordinates.chromosome,\n                            coordinates.start - 1,     // UCSC 0 convention\n                            coordinates.stop,\n                            record\n                        ))\n                }\n\n                if (coordinates.chromosome2) {\n                    features.push(\n                        new CivicVariant(\n                            coordinates.chromosome2,\n                            coordinates.start2 - 1,     // UCSC 0 convention\n                            coordinates.stop2,\n                            record\n                        ))\n                }\n            }\n\n        }\n        return features\n\n    }\n}\n\nclass CivicVariant {\n\n    constructor(chr, start, end, record) {\n        this.chr = chr\n        this.start = start\n        this.end = end\n        this.id = record.id\n        this.entrezName = record.entrez_name\n        this.name = record.name\n        this.actionabilityScore = record.civic_actionability_score\n\n        if (record.coordinates.reference_bases) {\n            this.refBases = record.coordinates.reference_bases\n        }\n        if (record.coordinates.variant_bases) {\n            this.altBases = record.coordinates.variant_bases\n        }\n        if (record.variant_types) {\n            this.variant_types = record.variant_types\n        }\n\n        this.locationString = (this.chr + \":\" +\n            StringUtils.numberFormatter(this.start + 1) + \"-\" +\n            StringUtils.numberFormatter(this.end))\n\n        // Color based on actionability score\n        if (this.actionabilityScore !== undefined) {\n            let alpha\n            if (this.actionabilityScore <= 10) {\n                alpha = 0.2\n            } else {\n                const v = Math.min(30, this.actionabilityScore)\n                alpha = 0.2 + 0.8 * Math.log10((v - 10) / 2)\n            }\n            this.alpha = alpha\n        }\n\n\n    }\n\n    popupData() {\n\n\n        const link = createLink(\"CIViC\", \"https://civicdb.org/links/variants/\" + this.id)\n\n        let cravatLink\n        const isSnp =\n            this.refBases !== this.altBases &&\n            this.refBases && this.refBases.length === 1 &&\n            this.altBases && this.altBases.length === 1\n\n\n        const pd = [link]\n        pd.push({\n            name: \"Entrez\",\n            value: createLink(this.entrezName, \"https://ghr.nlm.nih.gov/gene/\" + this.entrezName)\n        })\n        pd.push({name: \"Name\", value: this.name})\n\n        if (this.variant_types && this.variant_types.length > 0) {\n\n            const name = this.variant_types.length === 1 ? \"Type\" : \"Types\"\n            let typeString\n            for (let vt of this.variant_types) {\n                if (!typeString) typeString = vt.display_name\n                else typeString += \", \" + vt.display_name\n            }\n\n            pd.push({name: name, value: typeString})\n        }\n\n        pd.push({name: \"Actionability\", value: this.actionabilityScore})\n\n\n        pd.push({name: \"Location\", value: this.locationString})\n\n        return pd\n\n\n        function createLink(text, href) {\n            return \"<a target='_blank' \" + \"href='\" + href + \"'>\" + text + \"</a>\"\n        }\n\n    }\n}\n\nexport default CivicReader","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions, getFilename} from \"../util/igvUtils.js\"\n\nclass HtsgetReader {\n\n    constructor(config, genome) {\n        this.config = config\n        this.genome = genome\n        this.format = config.format ? config.format.toUpperCase() : \"BAM\"    // Backward compatibility\n        if (!(this.format === \"BAM\" || this.format === \"VCF\")) {\n            throw  Error(`htsget format ${config.format} is not supported`)\n        }\n    }\n\n    async readHeaderData() {\n        const url = `${getUrl(this.config)}?class=header&format=${this.format}`\n        const ticket = await igvxhr.loadJson(url, buildOptions(this.config))\n        return await this.loadUrls(ticket.htsget.urls)\n    }\n\n    async readData(chr, start, end) {\n        const url = `${getUrl(this.config)}?format=${this.format}&referenceName=${chr}&start=${Math.floor(start)}&end=${Math.ceil(end)}`\n        const ticket = await igvxhr.loadJson(url, buildOptions(this.config))\n        return this.loadUrls(ticket.htsget.urls)\n    }\n\n    async loadUrls(urls) {\n\n        const promiseArray = []\n        for (let urlData of urls) {\n\n            if (urlData.url.startsWith('data:')) {\n                // this is a data-uri\n                promiseArray.push(Promise.resolve(dataUriToBytes(urlData.url)))\n\n            } else {\n\n                const options = buildOptions(this.config || {})\n\n                if (urlData.headers) {\n                    options.headers = Object.assign(options.headers || {}, urlData.headers)\n                }\n\n                promiseArray.push(igvxhr.loadArrayBuffer(urlData.url, options))\n            }\n        }\n        const arrayBuffers = await Promise.all(promiseArray)\n        return concatArrays(arrayBuffers)\n    }\n\n\n    static async inferFormat(config) {\n        try {\n            const url = getUrl(config)\n            const headerURL = `${url}${url.includes(\"?\") ? \"&\" : \"?\"}class=header`\n            const ticket = await igvxhr.loadJson(headerURL, buildOptions(config))\n            if (ticket.htsget) {\n                const format = ticket.htsget.format\n                if (!(format === \"BAM\" || format === \"VCF\")) {\n                    throw  Error(`htsget format ${format} is not supported`)\n                }\n                config.format = format.toLowerCase()\n                config.sourceType = \"htsget\"\n                if (!config.name) {\n                    config.name = await getFilename(config.url)\n                }\n            }\n        } catch (e) {\n            // Errors => this is not an htsget source, not an application error.  Ignore\n        }\n    }\n}\n\n/**\n * Extract the full url from the config.  Striving for backward compatibility, \"endpoint\" and \"id\" are deprecated.\n *\n * @param config\n */\nfunction getUrl(config) {\n    if (config.url && config.endpoint && config.id) {\n        return config.url + config.endpoint + config.id    // Deprecated\n    } else if (config.endpoint && config.id) {\n        return config.endpoint + config.id                // Deprecated\n    } else if (config.url) {\n        if (config.url.startsWith(\"htsget://\")) {\n            return config.url.replace(\"htsget://\", \"https://\")    // htsget -> http not supported\n        } else {\n            return config.url\n        }\n    } else {\n        throw Error(\"Must specify either 'url', or 'endpoint' and 'id\")\n    }\n\n\n}\n\n/**\n * Concatenate a list of array buffers, returning an UInt8Array\n * @param arrayBuffers\n */\nfunction concatArrays(arrayBuffers) {\n\n    let len = 0\n    for (let a of arrayBuffers) {\n        len += a.byteLength\n    }\n\n    let offset = 0\n    const newArray = new Uint8Array(len)\n    for (let buf of arrayBuffers) {\n        const a = new Uint8Array(buf)\n        newArray.set(a, offset)\n        offset += a.length\n    }\n\n    return newArray\n}\n\nfunction dataUriToBytes(dataUri) {\n\n    const split = dataUri.split(',')\n    const info = split[0].split(':')[1]\n    let dataString = split[1]\n\n    if (info.indexOf('base64') >= 0) {\n        dataString = atob(dataString)\n    } else {\n        dataString = decodeURI(dataString)\n    }\n\n    const bytes = new Uint8Array(dataString.length)\n    for (var i = 0; i < dataString.length; i++) {\n        bytes[i] = dataString.charCodeAt(i)\n    }\n\n    return bytes\n}\n\n\nexport default HtsgetReader","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\nimport HtsgetReader from \"./htsgetReader.js\"\nimport getDataWrapper from \"../feature/dataWrapper.js\"\nimport VcfParser from \"../variant/vcfParser.js\"\n\nclass HtsgetVariantReader extends HtsgetReader {\n\n    constructor(config, genome) {\n        super(config, genome)\n        this.parser = new VcfParser()\n    }\n\n    async readHeader() {\n        if (!this.header) {\n            const data = await this.readHeaderData()\n            const dataWrapper = getDataWrapper(data)\n            this.header = await this.parser.parseHeader(dataWrapper, this.genome)\n            this.chrAliasTable = this.header.chrAliasTable\n        }\n        return this.header\n    }\n\n    async readFeatures(chr, start, end) {\n\n        if (this.config.format && this.config.format.toUpperCase() !== \"VCF\") {\n            throw  Error(`htsget format ${this.config.format} is not supported`)\n        }\n\n        if (!this.chrAliasTable) {\n            await this.readHeader()\n        }\n\n        let queryChr = this.chrAliasTable.has(chr) ? this.chrAliasTable.get(chr) : chr\n\n        const data = await this.readData(queryChr, start, end)\n\n        const dataWrapper = getDataWrapper(data)\n\n        return this.parser.parseFeatures(dataWrapper)\n\n        //  return dataWrapper;\n\n    }\n\n}\n\n\n/*\nExample for https://htsget.ga4gh.org/variants/1000genomes.phase1.chr22?format=VCF&referenceName=22&start=0&end=100000\n\n{\n    \"htsget\": {\n        \"format\": \"VCF\",\n        \"urls\": [{\n            \"url\": \"https://htsget.ga4gh.org/variants/data/1000genomes.phase1.chr22\",\n            \"headers\": {\"HtsgetBlockClass\": \"header\", \"HtsgetCurrentBlock\": \"0\", \"HtsgetTotalBlocks\": \"2\"},\n            \"class\": \"header\"\n        }, {\n            \"url\": \"https://htsget.ga4gh.org/variants/data/1000genomes.phase1.chr22?end=100000&referenceName=22&start=0\",\n            \"headers\": {\"HtsgetCurrentBlock\": \"1\", \"HtsgetTotalBlocks\": \"2\"},\n            \"class\": \"body\"\n        }]\n    }\n*/\n\n\nexport default HtsgetVariantReader","// Assigns a row # to each feature.  If the feature does not fit in any row and #rows == maxRows no\n// row number is assigned.\nfunction pack(featureList, maxRows) {\n\n    maxRows = maxRows || Number.MAX_SAFE_INTEGER\n    const rows = []\n    featureList.sort(function (a, b) {\n        return a.start - b.start\n    })\n    rows.push(-1000)\n\n    for (let feature of featureList) {\n        let r = 0\n        const len = Math.min(rows.length, maxRows)\n        for (r = 0; r < len; r++) {\n            if (feature.start >= rows[r]) {\n                feature.row = r\n                rows[r] = feature.end\n                break\n            }\n        }\n        feature.row = r\n        rows[r] = feature.end\n    }\n}\n\nexport default pack\n\n","import pack from \"./featurePacker.js\"\n\nconst DEFAULT_MAX_WG_COUNT = 10000\n\n/**\n * Return a collection of \"whole genome\" features wrapping the supplied features, possibly downsampled.  The purpose\n * is to support painting features in \"whole genome view\".\n *\n * @param allFeatures - dictionary (object), keys are chromosome names, values are lists of features\n * @param genome\n * @param maxWGCount - optional, maximum # of whole genome features to computer\n * @returns {*[]}\n */\nfunction computeWGFeatures(allFeatures, genome, maxWGCount) {\n\n    const max = maxWGCount || DEFAULT_MAX_WG_COUNT\n\n    const makeWGFeature = (f) => {\n        const wg = Object.assign({}, f)\n        wg.chr = \"all\"\n        wg.start = genome.getGenomeCoordinate(f.chr, f.start)\n        wg.end = genome.getGenomeCoordinate(f.chr, f.end)\n        wg._f = f\n        // Don't draw exons in whole genome view\n        if (wg[\"exons\"]) delete wg[\"exons\"]\n        return wg\n    }\n\n    const wgChromosomeNames = new Set(genome.wgChromosomeNames)\n    const wgFeatures = []\n    let count = 0\n    for (let c of genome.wgChromosomeNames) {\n\n        if(Array.isArray(allFeatures)) {\n            const featureDict = {}\n            for(let f of allFeatures) {\n                const chr = genome.getChromosomeName(f.chr)\n                if(!featureDict.hasOwnProperty(chr)) {\n                    featureDict[chr] = []\n                }\n                featureDict[chr].push(f)\n            }\n            allFeatures = featureDict\n        }\n\n        const features = allFeatures[c]\n\n        if (features) {\n            for (let f of features) {\n                let queryChr = genome.getChromosomeName(f.chr)\n                if (wgChromosomeNames.has(queryChr)) {\n                    if (wgFeatures.length < max) {\n                        wgFeatures.push(makeWGFeature(f))\n                    } else {\n                        //Reservoir sampling\n                        const samplingProb = max / (count + 1)\n                        if (Math.random() < samplingProb) {\n                            const idx = Math.floor(Math.random() * (max - 1))\n                            wgFeatures[idx] = makeWGFeature(f)\n                        }\n                    }\n                }\n                count++\n            }\n        }\n    }\n\n    wgFeatures.sort(function (a, b) {\n        return a.start - b.start\n    })\n\n    return wgFeatures\n}\n\nfunction packFeatures(features, maxRows) {\n\n    maxRows = maxRows || 1000\n    if (features == null || features.length === 0) {\n        return\n    }\n    // Segregate by chromosome\n    const chrFeatureMap = {}\n    const chrs = []\n    for (let feature of features) {\n        const chr = feature.chr\n        let flist = chrFeatureMap[chr]\n        if (!flist) {\n            flist = []\n            chrFeatureMap[chr] = flist\n            chrs.push(chr)\n        }\n        flist.push(feature)\n    }\n\n    // Loop through chrosomosomes and pack features;\n    for (let chr of chrs) {\n        pack(chrFeatureMap[chr], maxRows)\n    }\n}\n\n\nexport {computeWGFeatures, packFeatures}","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014-2015 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {FeatureCache} from \"../../node_modules/igv-utils/src/index.js\"\nimport FeatureFileReader from \"./featureFileReader.js\"\nimport CustomServiceReader from \"./customServiceReader.js\"\nimport UCSCServiceReader from \"./ucscServiceReader.js\"\nimport GFFHelper from \"./gff/gffHelper.js\"\nimport GtexReader from \"../gtex/gtexReader.js\"\nimport ImmVarReader from \"../gtex/immvarReader.js\"\nimport Ga4ghVariantReader from \"../ga4gh/ga4ghVariantReader.js\"\nimport CivicReader from \"../civic/civicReader.js\"\nimport GenomicInterval from \"../genome/genomicInterval.js\"\nimport HtsgetVariantReader from \"../htsget/htsgetVariantReader.js\"\nimport {computeWGFeatures, packFeatures} from \"./featureUtils.js\"\n\nconst DEFAULT_MAX_WG_COUNT = 10000\n\n/**\n * feature source for \"bed like\" files (tab or whitespace delimited files with 1 feature per line: bed, gff, vcf, etc)\n *\n * @param config\n * @constructor\n */\nclass TextFeatureSource {\n\n    constructor(config, genome) {\n\n        this.config = config || {}\n        this.genome = genome\n        this.sourceType = (config.sourceType === undefined ? \"file\" : config.sourceType)\n        this.maxWGCount = config.maxWGCount || DEFAULT_MAX_WG_COUNT\n\n        const queryableFormats = new Set([\"bigwig\", \"bw\", \"bigbed\", \"bb\", \"biginteract\", \"biggenepred\", \"bignarrowpeak\", \"tdf\"])\n\n        this.queryable = config.indexURL || config.queryable === true   // False by default, unless explicitly set\n        if (config.reader) {\n            // Explicit reader implementation\n            this.reader = config.reader\n            this.queryable = config.queryable !== false\n        } else if (config.sourceType === \"ga4gh\") {\n            this.reader = new Ga4ghVariantReader(config, genome)\n            this.queryable = true\n        } else if (config.sourceType === \"immvar\") {\n            this.reader = new ImmVarReader(config)\n            this.queryable = true\n        } else if (config.type === \"eqtl\" && config.sourceType === \"gtex-ws\") {\n            this.reader = new GtexReader(config)\n            this.queryable = true\n        } else if (\"htsget\" === config.sourceType) {\n            this.reader = new HtsgetVariantReader(config, genome)\n            this.queryable = true\n        } else if (config.sourceType === 'ucscservice') {\n            this.reader = new UCSCServiceReader(config.source)\n            this.queryable = true\n        } else if (config.sourceType === 'custom') {\n            this.reader = new CustomServiceReader(config.source)\n            this.queryable = false !== config.source.queryable\n        } else if (\"civic-ws\" === config.sourceType) {\n            this.reader = new CivicReader(config)\n            this.queryable = false\n        } else {\n            // File of some type (i.e. not a webservice)\n            this.reader = new FeatureFileReader(config, genome)\n            if (config.queryable !== undefined) {\n                this.queryable = config.queryable\n            } else if (queryableFormats.has(config.format) || this.reader.indexed) {\n                this.queryable = true\n            } else {\n                // Leav undefined -- will defer until we know if reader has an index\n            }\n        }\n\n        // Set  searchable unless explicitly turned off, or track uses in indexed or otherwise queryable\n        // feature source.  queryable => features loaded on demand (by query)\n        this.searchable = config.searchable === true || config.searchableFields || (config.searchable !== false && !this.queryable)\n\n    }\n\n    async defaultVisibilityWindow() {\n        if (this.reader && typeof this.reader.defaultVisibilityWindow === 'function') {\n            return this.reader.defaultVisibilityWindow()\n        }\n    }\n\n    async trackType() {\n        const header = await this.getHeader()\n        if (header) {\n            return header.type\n        } else {\n            return undefined    // Convention for unknown or unspecified\n        }\n    }\n\n    async getHeader() {\n        if (!this.header) {\n\n            if (this.reader && typeof this.reader.readHeader === \"function\") {\n                const header = await this.reader.readHeader()\n                if (header) {\n                    this.header = header\n                    if (header.format) {\n                        this.config.format = header.format\n                    }\n                } else {\n                    this.header = {}\n                }\n            } else {\n                this.header = {}\n            }\n        }\n        return this.header\n    }\n\n    /**\n     * Required function for all data source objects.  Fetches features for the\n     * range requested.\n     *\n     * This function is quite complex due to the variety of reader types backing it, some indexed, some queryable,\n     * some not.\n     *\n     * @param chr\n     * @param start\n     * @param end\n     * @param bpPerPixel\n     */\n    async getFeatures({chr, start, end, bpPerPixel, visibilityWindow}) {\n\n        const genome = this.genome\n        const queryChr = genome ? genome.getChromosomeName(chr) : chr\n        const isWholeGenome = (\"all\" === queryChr.toLowerCase())\n\n        // Various conditions that can require a feature load\n        //   * view is \"whole genome\" but no features are loaded\n        //   * cache is disabled\n        //   * cache does not contain requested range\n       // const containsRange = this.featureCache.containsRange(new GenomicInterval(queryChr, start, end))\n        if ((isWholeGenome && !this.wgFeatures && this.supportsWholeGenome()) ||\n            this.config.disableCache ||\n            !this.featureCache ||\n            !this.featureCache.containsRange(new GenomicInterval(queryChr, start, end))) {\n            await this.loadFeatures(queryChr, start, end, visibilityWindow)\n        }\n\n        if (isWholeGenome) {\n            if (!this.wgFeatures) {\n                if (this.supportsWholeGenome()) {\n                    this.wgFeatures = computeWGFeatures(this.featureCache.getAllFeatures(), this.genome, this.maxWGCount)\n                } else {\n                    this.wgFeatures = []\n                }\n            }\n            return this.wgFeatures\n        } else {\n            return this.featureCache.queryFeatures(queryChr, start, end)\n        }\n    }\n\n    supportsWholeGenome() {\n        return !this.queryable   // queryable (indexed, web services) sources don't support whole genome view\n    }\n\n    // TODO -- experimental, will only work for non-indexed sources\n    getAllFeatures() {\n        if (this.queryable || !this.featureCache) {   // queryable sources don't support all features\n            return []\n        } else {\n            return this.featureCache.getAllFeatures()\n        }\n    }\n\n\n    async loadFeatures(queryChr, start, end, visibilityWindow) {\n\n        const reader = this.reader\n        let intervalStart = start\n        let intervalEnd = end\n\n        // Use visibility window to potentially expand query interval.\n        // This can save re-queries as we zoom out.  Visibility window <= 0 is a special case\n        // indicating whole chromosome should be read at once.\n        if ((!visibilityWindow || visibilityWindow <= 0) && this.config.expandQuery !== false) {\n            // Whole chromosome\n            const chromosome = this.genome ? this.genome.getChromosome(queryChr) : undefined\n            intervalStart = 0\n            intervalEnd = Math.max(chromosome ? chromosome.bpLength : Number.MAX_SAFE_INTEGER, end)\n        } else if (visibilityWindow > (end - start) && this.config.expandQuery !== false) {\n            const expansionWindow = Math.min(4.1 * (end - start), visibilityWindow)\n            intervalStart = Math.max(0, (start + end) / 2 - expansionWindow)\n            intervalEnd = start + expansionWindow\n        }\n\n        let features = await reader.readFeatures(queryChr, intervalStart, intervalEnd)\n        if (this.queryable === undefined) {\n            this.queryable = reader.indexed\n        }\n\n        const genomicInterval = this.queryable ?\n            new GenomicInterval(queryChr, intervalStart, intervalEnd) :\n            undefined\n\n        if (features) {\n\n            if (this.config.assembleGFF !== false &&\n                (\"gtf\" === this.config.format || \"gff3\" === this.config.format || \"gff\" === this.config.format)) {\n                features = (new GFFHelper(this.config)).combineFeatures(features, genomicInterval)\n            }\n\n            // Assign overlapping features to rows\n            if (this.config.format !== \"wig\" && this.config.type !== \"junctions\") {\n                const maxRows = this.config.maxRows || Number.MAX_SAFE_INTEGER\n                packFeatures(features, maxRows)\n            }\n\n            // Note - replacing previous cache with new one.  genomicInterval is optional (might be undefined => includes all features)\n            this.featureCache = new FeatureCache(features, this.genome, genomicInterval)\n\n            // If track is marked \"searchable\"< cache features by name -- use this with caution, memory intensive\n            if (this.searchable) {\n                this.genome.addFeaturesToDB(features, this.config)\n            }\n        } else {\n            this.featureCache = new FeatureCache([], genomicInterval)     // Empty cache\n        }\n    }\n}\n\n\n/**\n * This function is used to apply properties normally added during parsing to  features supplied directly in the\n * config as an array of objects.   At the moment the only application is bedpe type features.\n * @param features\n */\nfunction fixFeatures(features, genome) {\n\n    if (!features || features.length === 0) return []\n\n    const isBedPE = features[0].chr === undefined && features[0].chr1 !== undefined\n    if (isBedPE) {\n        const interChrFeatures = []\n        for (let feature of features) {\n\n            if (genome) {\n                feature.chr1 = genome.getChromosomeName(feature.chr1)\n                feature.chr2 = genome.getChromosomeName(feature.chr2)\n            }\n\n            // Set total extent of feature\n            if (feature.chr1 === feature.chr2) {\n                feature.chr = feature.chr1\n                feature.start = Math.min(feature.start1, feature.start2)\n                feature.end = Math.max(feature.end1, feature.end2)\n            } else {\n                interChrFeatures.push(feature)\n            }\n        }\n\n        // Make copies of inter-chr features, one for each chromosome\n        for (let f1 of interChrFeatures) {\n            const f2 = Object.assign({dup: true}, f1)\n            features.push(f2)\n\n            f1.chr = f1.chr1\n            f1.start = f1.start1\n            f1.end = f1.end1\n\n            f2.chr = f2.chr2\n            f2.start = f2.start2\n            f2.end = f2.end2\n        }\n    } else if (genome) {\n        for (let feature of features) {\n            feature.chr = genome.getChromosomeName(feature.chr)\n        }\n    }\n\n\n    return features\n}\n\nexport default TextFeatureSource\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\n\nclass BufferedReader {\n\n    constructor(config, contentLength, bufferSize) {\n        this.path = config.url\n        this.bufferSize = bufferSize ? bufferSize : 512000\n        this.range = {start: -1, size: -1}\n        this.config = config\n    }\n\n    /**\n     *\n     * @param requestedRange - byte rangeas {start, size}\n     * @param fulfill - function to receive result\n     * @param asUint8 - optional flag to return result as an UInt8Array\n     */\n    async dataViewForRange(requestedRange, asUint8, retries = 0) {\n        try {\n\n            const hasData = (this.data && (this.range.start <= requestedRange.start) &&\n                ((this.range.start + this.range.size) >= (requestedRange.start + requestedRange.size)))\n\n            if (!hasData) {\n                let bufferSize\n                // If requested range size is specified, potentially expand buffer size\n                if (requestedRange.size) {\n                    bufferSize = Math.max(this.bufferSize, requestedRange.size)\n                } else {\n                    bufferSize = this.bufferSize\n                }\n                if (this.contentLength) {\n                    bufferSize = Math.min(bufferSize, this.contentLength - requestedRange.start)\n                }\n                const loadRange = {start: requestedRange.start, size: bufferSize}\n                const arrayBuffer = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {range: loadRange}))\n                this.data = arrayBuffer\n                this.range = loadRange\n            }\n\n            const len = this.data.byteLength\n            const bufferStart = requestedRange.start - this.range.start\n            return asUint8 ?\n                new Uint8Array(this.data, bufferStart, len - bufferStart) :\n                new DataView(this.data, bufferStart, len - bufferStart)\n        } catch (e) {\n            if (retries === 0 && e.message && e.message.startsWith(\"416\")) {\n                try {\n                    this.contentLength = await igvxhr.getContentLength(this.path, buildOptions(this.config))\n                    return this.dataViewForRange(requestedRange, asUint8, ++retries)\n                } catch (e1) {\n                    console.error(e1)\n                }\n                throw e\n            }\n        }\n    }\n}\n\nexport default BufferedReader\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport BufferedReader from \"./bufferedReader.js\"\nimport BinaryParser from \"../binary.js\"\nimport {BGZip, igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions, isDataURL} from \"../util/igvUtils.js\"\nimport getDecoder from \"./bbDecoders.js\"\nimport {parseAutoSQL} from \"../util/ucscUtils.js\"\n\nlet BIGWIG_MAGIC_LTH = 0x888FFC26 // BigWig Magic Low to High\nlet BIGWIG_MAGIC_HTL = 0x26FC8F66 // BigWig Magic High to Low\nlet BIGBED_MAGIC_LTH = 0x8789F2EB // BigBed Magic Low to High\nlet BIGBED_MAGIC_HTL = 0xEBF28987 // BigBed Magic High to Low\nlet BBFILE_HEADER_SIZE = 64\nlet RPTREE_HEADER_SIZE = 48\nlet RPTREE_NODE_LEAF_ITEM_SIZE = 32   // leaf item size\nlet RPTREE_NODE_CHILD_ITEM_SIZE = 24  // child item size\nlet BUFFER_SIZE = 512000     //  buffer\nlet BPTREE_HEADER_SIZE = 32\n\nclass BWReader {\n\n    constructor(config, genome) {\n        this.path = config.url\n        this.format = config.format || \"bigwig\"\n        this.genome = genome\n        this.rpTreeCache = {}\n        this.config = config\n        this.loader = isDataURL(this.path) ? new DataBuffer(this.path) : igvxhr\n    }\n\n    async readWGFeatures(bpPerPixel, windowFunction) {\n        await this.loadHeader()\n        const chrIdx1 = 0\n        const chrIdx2 = this.chromTree.idToChrom.length - 1\n        const chr1 = this.chromTree.idToChrom[chrIdx1]\n        const chr2 = this.chromTree.idToChrom[chrIdx2]\n        return this.readFeatures(chr1, 0, chr2, Number.MAX_VALUE, bpPerPixel, windowFunction)\n    }\n\n    async readFeatures(chr1, bpStart, chr2, bpEnd, bpPerPixel, windowFunction) {\n\n        await this.loadHeader()\n        const chrIdx1 = this.chromTree.chromToID[chr1]\n        const chrIdx2 = this.chromTree.chromToID[chr2]\n        if (chrIdx1 === undefined || chrIdx2 === undefined) {\n            return []\n        }\n\n        let treeOffset\n        let decodeFunction\n        if (this.type === \"bigwig\") {\n            // Select a biwig \"zoom level\" appropriate for the current resolution.\n            const zoomLevelHeaders = await this.getZoomHeaders()\n            let zoomLevelHeader = bpPerPixel ? zoomLevelForScale(bpPerPixel, zoomLevelHeaders) : undefined\n            if (zoomLevelHeader) {\n                treeOffset = zoomLevelHeader.indexOffset\n                decodeFunction = decodeZoomData\n            } else {\n                treeOffset = this.header.fullIndexOffset\n                decodeFunction = decodeWigData\n            }\n        } else {\n            // bigbed, zoom data is not currently used in igv for bed type features\n            treeOffset = this.header.fullIndexOffset\n            decodeFunction = getBedDataDecoder.call(this)\n        }\n\n\n        // Load the R Tree and fine leaf items\n        const rpTree = await this.loadRPTree(treeOffset)\n        const leafItems = await rpTree.findLeafItemsOverlapping(chrIdx1, bpStart, chrIdx2, bpEnd)\n        if (!leafItems || leafItems.length === 0) {\n            return []\n        } else {\n\n            // Consolidate leaf items and get all data at once\n            let start = Number.MAX_VALUE\n            let end = 0\n            for (let item of leafItems) {\n                start = Math.min(start, item.dataOffset)\n                end = Math.max(end, item.dataOffset + item.dataSize)\n            }\n            const size = end - start\n            const arrayBuffer = await this.loader.loadArrayBuffer(this.config.url, buildOptions(this.config, {\n                range: {\n                    start: start,\n                    size: size\n                }\n            }))\n\n            // Parse data and return features\n            const allFeatures = []\n            for (let item of leafItems) {\n                const uint8Array = new Uint8Array(arrayBuffer, item.dataOffset - start, item.dataSize)\n                let plain\n                const isCompressed = this.header.uncompressBuffSize > 0\n                if (isCompressed) {\n                    plain = BGZip.inflate(uint8Array)\n                } else {\n                    plain = uint8Array\n                }\n                decodeFunction.call(this, new DataView(plain.buffer), chrIdx1, bpStart, chrIdx2, bpEnd, allFeatures, this.chromTree.idToChrom, windowFunction)\n            }\n\n            allFeatures.sort(function (a, b) {\n                return a.start - b.start\n            })\n\n            return allFeatures\n        }\n    }\n\n    async getZoomHeaders() {\n        if (this.zoomLevelHeaders) {\n            return this.zoomLevelHeaders\n        } else {\n            await this.loadHeader()\n            return this.zoomLevelHeaders\n        }\n    }\n\n    async loadHeader() {\n\n        if (this.header) {\n            return this.header\n        } else {\n            let data = await this.loader.loadArrayBuffer(this.path, buildOptions(this.config, {\n                range: {\n                    start: 0,\n                    size: BBFILE_HEADER_SIZE\n                }\n            }))\n\n            let header\n\n            // Assume low-to-high unless proven otherwise\n            this.littleEndian = true\n\n            let binaryParser = new BinaryParser(new DataView(data))\n            let magic = binaryParser.getUInt()\n            if (magic === BIGWIG_MAGIC_LTH) {\n                this.type = \"bigwig\"\n            } else if (magic === BIGBED_MAGIC_LTH) {\n                this.type = \"bigbed\"\n            } else {\n                //Try big endian order\n                this.littleEndian = false\n\n                binaryParser.littleEndian = false\n                binaryParser.position = 0\n                let magic = binaryParser.getUInt()\n\n                if (magic === BIGWIG_MAGIC_HTL) {\n                    this.type = \"bigwig\"\n                } else if (magic === BIGBED_MAGIC_HTL) {\n                    this.type = \"bigbed\"\n                } else {\n                    // TODO -- error, unknown file type  or BE\n                }\n            }\n            // Table 5  \"Common header for bigwig and bigbed files\"\n            header = {\n                bwVersion: binaryParser.getUShort(),\n                nZoomLevels: binaryParser.getUShort(),\n                chromTreeOffset: binaryParser.getLong(),\n                fullDataOffset: binaryParser.getLong(),\n                fullIndexOffset: binaryParser.getLong(),\n                fieldCount: binaryParser.getUShort(),\n                definedFieldCount: binaryParser.getUShort(),\n                autoSqlOffset: binaryParser.getLong(),\n                totalSummaryOffset: binaryParser.getLong(),\n                uncompressBuffSize: binaryParser.getInt(),\n                extensionOffset: binaryParser.getLong()\n            }\n\n            ///////////\n\n            const startOffset = BBFILE_HEADER_SIZE\n            let range = {start: startOffset, size: (header.fullDataOffset - startOffset + 5)}\n            data = await this.loader.loadArrayBuffer(this.path, buildOptions(this.config, {range: range}))\n\n            const nZooms = header.nZoomLevels\n            binaryParser = new BinaryParser(new DataView(data))\n\n            this.zoomLevelHeaders = []\n            this.firstZoomDataOffset = Number.MAX_SAFE_INTEGER\n            for (let i = 1; i <= nZooms; i++) {\n                const zoomNumber = nZooms - i\n                const zlh = new ZoomLevelHeader(zoomNumber, binaryParser)\n                this.firstZoomDataOffset = Math.min(zlh.dataOffset, this.firstZoomDataOffset)\n                this.zoomLevelHeaders[zoomNumber] = zlh\n            }\n\n            // Autosql\n            if (header.autoSqlOffset > 0) {\n                binaryParser.position = header.autoSqlOffset - startOffset\n                const autoSqlString = binaryParser.getString()\n                if (autoSqlString) {\n                    this.autoSql = parseAutoSQL(autoSqlString)\n                }\n            }\n\n            // Total summary\n            if (header.totalSummaryOffset > 0) {\n                binaryParser.position = header.totalSummaryOffset - startOffset\n                this.totalSummary = new BWTotalSummary(binaryParser)\n            }\n\n            // Chrom data index\n            if (header.chromTreeOffset > 0) {\n                binaryParser.position = header.chromTreeOffset - startOffset\n                this.chromTree = new BPTree(binaryParser, startOffset, this.genome)\n            } else {\n                // TODO -- this is an error, not expected\n                throw \"BigWig chromosome tree offset <= 0\"\n            }\n\n            //Finally total data count\n            binaryParser.position = header.fullDataOffset - startOffset\n            header.dataCount = binaryParser.getInt()\n            ///////////\n\n            this.setDefaultVisibilityWindow(header)\n\n            this.header = header\n            return this.header\n\n        }\n    }\n\n    async loadRPTree(offset) {\n\n        let rpTree = this.rpTreeCache[offset]\n        if (rpTree) {\n            return rpTree\n        } else {\n            rpTree = new RPTree(offset, this.config, this.littleEndian, this.loader)\n            await rpTree.load()\n            this.rpTreeCache[offset] = rpTree\n            return rpTree\n        }\n    }\n\n    async getType() {\n        await this.loadHeader()\n        return this.type\n    }\n\n    async getTrackType() {\n        await this.loadHeader()\n        if (this.type === \"bigwig\") {\n            return \"wig\"\n        } else {\n            return this.autoSql && this.autoSql.table === \"chromatinInteract\" ? \"interact\" : \"annotation\"\n        }\n    }\n\n    setDefaultVisibilityWindow(header) {\n        if (this.type === \"bigwig\") {\n            this.visibilityWindow = -1\n        } else {\n            // bigbed\n            let genomeSize = this.genome ? this.genome.getGenomeLength() : 3088286401\n            // Estimate window size to return ~ 1,000 features, assuming even distribution across the genome\n            this.visibilityWindow = header.dataCount < 1000 ? -1 : 1000 * (genomeSize / header.dataCount)\n\n        }\n    }\n}\n\n\nclass ZoomLevelHeader {\n    constructor(index, byteBuffer) {\n        this.index = index\n        this.reductionLevel = byteBuffer.getInt()\n        this.reserved = byteBuffer.getInt()\n        this.dataOffset = byteBuffer.getLong()\n        this.indexOffset = byteBuffer.getLong()\n    }\n}\n\nclass RPTree {\n\n    constructor(fileOffset, config, littleEndian, loader) {\n\n        this.config = config\n        this.loader = loader\n        this.fileOffset = fileOffset // File offset to beginning of tree\n        this.path = config.url\n        this.littleEndian = littleEndian\n    }\n\n    async load() {\n        const rootNodeOffset = this.fileOffset + RPTREE_HEADER_SIZE\n        const bufferedReader = isDataURL(this.path) ?\n            this.loader :\n            new BufferedReader(this.config, BUFFER_SIZE)\n        this.rootNode = await this.readNode(rootNodeOffset, bufferedReader)\n        return this\n    }\n\n    async readNode(filePosition, bufferedReader) {\n\n        let dataView = await bufferedReader.dataViewForRange({start: filePosition, size: 4}, false)\n        let binaryParser = new BinaryParser(dataView, this.littleEndian)\n        const type = binaryParser.getByte()\n        const isLeaf = (type === 1)\n        const reserved = binaryParser.getByte()\n        const count = binaryParser.getUShort()\n        filePosition += 4\n\n        let bytesRequired = count * (isLeaf ? RPTREE_NODE_LEAF_ITEM_SIZE : RPTREE_NODE_CHILD_ITEM_SIZE)\n        let range2 = {start: filePosition, size: bytesRequired}\n        dataView = await bufferedReader.dataViewForRange(range2, false)\n        const items = new Array(count)\n        binaryParser = new BinaryParser(dataView)\n\n        if (isLeaf) {\n            for (let i = 0; i < count; i++) {\n                let item = {\n                    isLeaf: true,\n                    startChrom: binaryParser.getInt(),\n                    startBase: binaryParser.getInt(),\n                    endChrom: binaryParser.getInt(),\n                    endBase: binaryParser.getInt(),\n                    dataOffset: binaryParser.getLong(),\n                    dataSize: binaryParser.getLong()\n                }\n                items[i] = item\n\n            }\n            return new RPTreeNode(items)\n        } else { // non-leaf\n            for (let i = 0; i < count; i++) {\n\n                let item = {\n                    isLeaf: false,\n                    startChrom: binaryParser.getInt(),\n                    startBase: binaryParser.getInt(),\n                    endChrom: binaryParser.getInt(),\n                    endBase: binaryParser.getInt(),\n                    childOffset: binaryParser.getLong()\n                }\n                items[i] = item\n            }\n\n            return new RPTreeNode(items)\n        }\n\n    }\n\n    async findLeafItemsOverlapping(chrIdx1, startBase, chrIdx2, endBase) {\n\n        let self = this\n\n        return new Promise(function (fulfill, reject) {\n\n            let leafItems = [],\n                processing = new Set(),\n                bufferedReader = isDataURL(self.path) ?\n                    self.loader :\n                    new BufferedReader(self.config, BUFFER_SIZE)\n\n            processing.add(0)  // Zero represents the root node\n            findLeafItems(self.rootNode, 0)\n\n            function findLeafItems(node, nodeId) {\n\n                if (overlaps(node, chrIdx1, startBase, chrIdx2, endBase)) {\n\n                    let items = node.items\n\n                    items.forEach(function (item) {\n\n                        if (overlaps(item, chrIdx1, startBase, chrIdx2, endBase)) {\n\n                            if (item.isLeaf) {\n                                leafItems.push(item)\n                            } else {\n                                if (item.childNode) {\n                                    findLeafItems(item.childNode)\n                                } else {\n                                    processing.add(item.childOffset)  // Represent node to-be-loaded by its file position\n\n                                    self.readNode(item.childOffset, bufferedReader)\n                                        .then(function (node) {\n                                            item.childNode = node\n                                            findLeafItems(node, item.childOffset)\n                                        })\n                                        .catch(reject)\n                                }\n                            }\n                        }\n                    })\n\n                }\n\n                if (nodeId !== undefined) processing.delete(nodeId)\n\n                // Wait until all nodes are processed\n                if (processing.size === 0) {\n                    fulfill(leafItems)\n                }\n            }\n        })\n    }\n}\n\nclass RPTreeNode {\n\n    constructor(items) {\n\n        this.items = items\n\n        let minChromId = Number.MAX_SAFE_INTEGER,\n            maxChromId = 0,\n            minStartBase = Number.MAX_SAFE_INTEGER,\n            maxEndBase = 0,\n            i,\n            item\n\n        for (i = 0; i < items.length; i++) {\n            item = items[i]\n            minChromId = Math.min(minChromId, item.startChrom)\n            maxChromId = Math.max(maxChromId, item.endChrom)\n            minStartBase = Math.min(minStartBase, item.startBase)\n            maxEndBase = Math.max(maxEndBase, item.endBase)\n        }\n\n        this.startChrom = minChromId\n        this.endChrom = maxChromId\n        this.startBase = minStartBase\n        this.endBase = maxEndBase\n    }\n}\n\nclass BPTree {\n\n    constructor(binaryParser, startOffset, genome) {\n\n        let magic = binaryParser.getInt()\n        let blockSize = binaryParser.getInt()\n        let keySize = binaryParser.getInt()\n        let valSize = binaryParser.getInt()\n        let itemCount = binaryParser.getLong()\n        let reserved = binaryParser.getLong()\n        let chromToId = {}\n        let idToChrom = []\n\n        this.header = {\n            magic: magic,\n            blockSize: blockSize,\n            keySize: keySize,\n            valSize: valSize,\n            itemCount: itemCount,\n            reserved: reserved\n        }\n        this.chromToID = chromToId\n        this.idToChrom = idToChrom\n\n        // Recursively walk tree to populate dictionary\n        readTreeNode(binaryParser, -1)\n\n\n        function readTreeNode(byteBuffer, offset) {\n\n            if (offset >= 0) byteBuffer.position = offset\n\n            let type = byteBuffer.getByte(),\n                reserved = byteBuffer.getByte(),\n                count = byteBuffer.getUShort(),\n                i,\n                key,\n                chromId,\n                chromSize,\n                childOffset,\n                bufferOffset,\n                currOffset\n\n\n            if (type === 1) {\n\n                for (i = 0; i < count; i++) {\n\n                    key = byteBuffer.getFixedLengthTrimmedString(keySize)\n                    chromId = byteBuffer.getInt()\n                    chromSize = byteBuffer.getInt()\n\n                    if (genome) key = genome.getChromosomeName(key)  // Translate to canonical chr name\n                    chromToId[key] = chromId\n                    idToChrom[chromId] = key\n\n                }\n            } else { // non-leaf\n\n                for (i = 0; i < count; i++) {\n\n                    key = byteBuffer.getFixedLengthTrimmedString(keySize)\n                    childOffset = byteBuffer.getLong()\n                    bufferOffset = childOffset - startOffset\n                    currOffset = byteBuffer.position\n                    readTreeNode(byteBuffer, bufferOffset)\n                    byteBuffer.position = currOffset\n                }\n            }\n\n        }\n    }\n}\n\n/**\n * Return true if {chrIdx1:startBase-chrIdx2:endBase} overlaps item's interval\n * @returns {boolean}\n */\nfunction overlaps(item, chrIdx1, startBase, chrIdx2, endBase) {\n\n    if (!item) {\n        console.log(\"null item for \" + chrIdx1 + \" \" + startBase + \" \" + endBase)\n        return false\n    }\n\n    return ((chrIdx2 > item.startChrom) || (chrIdx2 === item.startChrom && endBase >= item.startBase)) &&\n        ((chrIdx1 < item.endChrom) || (chrIdx1 === item.endChrom && startBase <= item.endBase))\n\n\n}\n\nclass BWTotalSummary {\n\n    constructor(byteBuffer) {\n        if (byteBuffer) {\n            this.basesCovered = byteBuffer.getLong()\n            this.minVal = byteBuffer.getDouble()\n            this.maxVal = byteBuffer.getDouble()\n            this.sumData = byteBuffer.getDouble()\n            this.sumSquares = byteBuffer.getDouble()\n            computeStats.call(this)\n        } else {\n            this.basesCovered = 0\n            this.minVal = 0\n            this.maxVal = 0\n            this.sumData = 0\n            this.sumSquares = 0\n            this.mean = 0\n            this.stddev = 0\n        }\n    }\n}\n\nfunction computeStats() {\n    let n = this.basesCovered\n    if (n > 0) {\n        this.mean = this.sumData / n\n        this.stddev = Math.sqrt(this.sumSquares / (n - 1))\n\n        let min = this.minVal < 0 ? this.mean - 2 * this.stddev : 0,\n            max = this.maxVal > 0 ? this.mean + 2 * this.stddev : 0\n\n        this.defaultRange = {\n            min: min,\n            max: max\n        }\n    }\n}\n\nfunction zoomLevelForScale(bpPerPixel, zoomLevelHeaders) {\n    let level\n    for (let i = 0; i < zoomLevelHeaders.length; i++) {\n        const zl = zoomLevelHeaders[i]\n        if (zl.reductionLevel < bpPerPixel) {\n            level = zl\n            break\n        }\n    }\n    return level\n}\n\n\nfunction decodeWigData(data, chrIdx1, bpStart, chrIdx2, bpEnd, featureArray, chrDict) {\n\n    const binaryParser = new BinaryParser(data)\n    const chromId = binaryParser.getInt()\n    const blockStart = binaryParser.getInt()\n    let chromStart = blockStart\n    let chromEnd = binaryParser.getInt()\n    const itemStep = binaryParser.getInt()\n    const itemSpan = binaryParser.getInt()\n    const type = binaryParser.getByte()\n    const reserved = binaryParser.getByte()\n    let itemCount = binaryParser.getUShort()\n\n    if (chromId >= chrIdx1 && chromId <= chrIdx2) {\n\n        let idx = 0;\n        while (itemCount-- > 0) {\n            let value\n            switch (type) {\n                case 1:\n                    chromStart = binaryParser.getInt()\n                    chromEnd = binaryParser.getInt()\n                    value = binaryParser.getFloat()\n                    break\n                case 2:\n                    chromStart = binaryParser.getInt()\n                    value = binaryParser.getFloat()\n                    chromEnd = chromStart + itemSpan\n                    break\n                case 3:  // Fixed step\n                    value = binaryParser.getFloat()\n                    chromStart = blockStart + idx * itemStep\n                    chromEnd = chromStart + itemSpan\n                    idx++\n                    break\n            }\n\n            if (chromId < chrIdx1 || (chromId === chrIdx1 && chromEnd < bpStart)) continue\n            else if (chromId > chrIdx2 || (chromId === chrIdx2 && chromStart >= bpEnd)) break\n\n            if (Number.isFinite(value)) {\n                const chr = chrDict[chromId]\n                featureArray.push({chr: chr, start: chromStart, end: chromEnd, value: value})\n            }\n\n        }\n    }\n}\n\nfunction getBedDataDecoder() {\n\n    const minSize = 3 * 4 + 1   // Minimum # of bytes required for a bed record\n    const decoder = getDecoder(this.header.definedFieldCount, this.header.fieldCount, this.autoSql, this.format)\n    return function (data, chrIdx1, bpStart, chrIdx2, bpEnd, featureArray, chrDict) {\n        const binaryParser = new BinaryParser(data)\n        while (binaryParser.remLength() >= minSize) {\n\n            const chromId = binaryParser.getInt()\n            const chr = chrDict[chromId]\n            const chromStart = binaryParser.getInt()\n            const chromEnd = binaryParser.getInt()\n            const rest = binaryParser.getString()\n            if (chromId < chrIdx1 || (chromId === chrIdx1 && chromEnd < bpStart)) continue\n            else if (chromId > chrIdx2 || (chromId === chrIdx2 && chromStart >= bpEnd)) break\n\n            if (chromEnd > 0) {\n                const feature = {chr: chr, start: chromStart, end: chromEnd}\n                featureArray.push(feature)\n                const tokens = rest.split(\"\\t\")\n                decoder(feature, tokens)\n            }\n        }\n    }\n}\n\n\nfunction decodeZoomData(data, chrIdx1, bpStart, chrIdx2, bpEnd, featureArray, chrDict, windowFunction) {\n\n    const binaryParser = new BinaryParser(data)\n    const minSize = 8 * 4  // Minimum # of bytes required for a zoom record\n\n\n    while (binaryParser.remLength() >= minSize) {\n        const chromId = binaryParser.getInt()\n        const chr = chrDict[chromId]\n        const chromStart = binaryParser.getInt()\n        const chromEnd = binaryParser.getInt()\n        const validCount = binaryParser.getInt()\n        const minVal = binaryParser.getFloat()\n        const maxVal = binaryParser.getFloat()\n        const sumData = binaryParser.getFloat()\n        const sumSquares = binaryParser.getFloat()\n        let value\n        switch (windowFunction) {\n            case \"min\":\n                value = minVal\n                break\n            case \"max\":\n                value = maxVal\n                break\n            default:\n                value = validCount === 0 ? 0 : sumData / validCount\n        }\n\n        if (chromId < chrIdx1 || (chromId === chrIdx1 && chromEnd < bpStart)) continue\n        else if (chromId > chrIdx2 || (chromId === chrIdx2 && chromStart >= bpEnd)) break\n\n\n        if (Number.isFinite(value)) {\n            featureArray.push({chr: chr, start: chromStart, end: chromEnd, value: value})\n\n\n        }\n    }\n}\n\nclass DataBuffer {\n\n    constructor(dataURI) {\n        this.data = BGZip.decodeDataURI(dataURI).buffer\n    }\n\n    /**\n     * igvxhr interface\n     * @param ignore\n     * @param options\n     * @returns {any}\n     */\n    loadArrayBuffer(ignore, options) {\n        const range = options.range\n        return range ? this.data.slice(range.start, range.start + range.size) : this.data\n    }\n\n    /**\n     * BufferedReader interface\n     *\n     * @param requestedRange - byte rangeas {start, size}\n     * @param fulfill - function to receive result\n     * @param asUint8 - optional flag to return result as an UInt8Array\n     */\n    async dataViewForRange(requestedRange, asUint8) {\n        const len = Math.min(this.data.byteLength - requestedRange.start, requestedRange.size)\n        return asUint8 ?\n            new Uint8Array(this.data, requestedRange.start, len) :\n            new DataView(this.data, requestedRange.start, len)\n    }\n}\n\nexport default BWReader\n","function scoreShade(score, color) {\n    const alpha = Math.min(1, 0.11 + 0.89 * (score / 779))\n    return alpha.toString()\n}\n\nfunction parseAutoSQL(str) {\n\n    let table\n    const fields = []\n    let startDecoding = false\n    const lines = str.trim().split(/\\s*[\\r\\n]+\\s*/g)\n    for (let line of lines) {\n        if (line.startsWith('table')) {\n            table = line.split(/\\s+/)[1].trim()\n        } else if (line.startsWith('(')) {\n            startDecoding = true\n        } else if (line.startsWith(')')) {\n        } else if (startDecoding) {\n            if (line.length > 0) {\n                const idx = line.indexOf(';')\n                const tokens = line.substr(0, idx).split(/\\s+/)\n                const description = line.substr(idx + 1).replace(/\"/g, '').trim()\n                fields.push({\n                    type: tokens[0],\n                    name: tokens[1],\n                    description: description\n                })\n            }\n        }\n    }\n    return {\n        table: table,\n        fields: fields\n    }\n}\n\n\nexport {scoreShade, parseAutoSQL}","import {IGVColor} from \"../../node_modules/igv-utils/src/index.js\"\n\nfunction getDecoder(definedFieldCount, fieldCount, autoSql, format) {\n\n    if (\"biginteract\" === format || (autoSql && ('chromatinInteract' === autoSql.table) || 'interact' === autoSql.table)) {\n        return decodeInteract\n    } else {\n        const standardFieldCount = definedFieldCount - 3\n        return function (feature, tokens) {\n\n            if (standardFieldCount > 0) {\n                feature.name = tokens[0]\n            }\n            if (standardFieldCount > 1) {\n                feature.score = Number(tokens[1])\n            }\n            if (standardFieldCount > 2) {\n                feature.strand = tokens[2]\n            }\n            if (standardFieldCount > 3) {\n                feature.cdStart = parseInt(tokens[3])\n            }\n            if (standardFieldCount > 4) {\n                feature.cdEnd = parseInt(tokens[4])\n            }\n            if (standardFieldCount > 5) {\n                if (tokens[5] !== \".\" && tokens[5] !== \"0\" && tokens[5] !== \"-1\") {\n                    const c = IGVColor.createColorString(tokens[5])\n                    feature.color = c.startsWith(\"rgb\") ? c : undefined\n                }\n            }\n            if (standardFieldCount > 8) {\n                const exonCount = parseInt(tokens[6])\n                const exonSizes = tokens[7].split(',')\n                const exonStarts = tokens[8].split(',')\n                const exons = []\n                for (let i = 0; i < exonCount; i++) {\n                    const eStart = feature.start + parseInt(exonStarts[i])\n                    const eEnd = eStart + parseInt(exonSizes[i])\n                    exons.push({start: eStart, end: eEnd})\n                }\n                findUTRs(exons, feature.cdStart, feature.cdEnd)\n                feature.exons = exons\n            }\n\n            if (autoSql) {\n                // TODO -- these should be equal, validate?  fieldCount-definedFieldCount, as.fields.length, tokens.length-3\n                const extraStart = definedFieldCount\n                for (let i = extraStart; i < fieldCount; i++) {\n                    if (i < autoSql.fields.length) {\n                        const name = autoSql.fields[i].name\n                        const value = tokens[i - 3]\n                        feature[name] = value\n                    }\n                }\n            }\n        }\n    }\n\n    //table chromatinInteract\n// \"Chromatin interaction between two regions\"\n//     (\n//     string chrom;      \"Chromosome (or contig, scaffold, etc.). For interchromosomal, use 2 records\"\n//     uint chromStart;   \"Start position of lower region. For interchromosomal, set to chromStart of this region\"\n//     uint chromEnd;     \"End position of upper region. For interchromosomal, set to chromEnd of this region\"\n//     string name;       \"Name of item, for display\"\n//     uint score;        \"Score from 0-1000\"\n//     double value;      \"Strength of interaction or other data value. Typically basis for score\"\n//     string exp;        \"Experiment name (metadata for filtering). Use . if not applicable\"\n//     string color;      \"Item color.  Specified as r,g,b or hexadecimal #RRGGBB or html color name, as in //www.w3.org/TR/css3-color/#html4.\"\n//     string region1Chrom;  \"Chromosome of lower region. For non-directional interchromosomal, chrom of this region.\"\n//     uint region1Start;  \"Start position of lower/this region\"\n//     uint region1End;    \"End position in chromosome of lower/this region\"\n//     string region1Name;  \"Identifier of lower/this region\"\n//     string region1Strand; \"Orientation of lower/this region: + or -.  Use . if not applicable\"\n//     string region2Chrom; \"Chromosome of upper region. For non-directional interchromosomal, chrom of other region\"\n//     uint region2Start;  \"Start position in chromosome of upper/this region\"\n//     uint region2End;    \"End position in chromosome of upper/this region\"\n//     string region2Name; \"Identifier of upper/this region\"\n//     string region2Strand; \"Orientation of upper/this region: + or -.  Use . if not applicable\"\n//     )\n    function decodeInteract(feature, tokens) {\n\n        feature.chr1 = tokens[5]\n        feature.start1 = Number.parseInt(tokens[6])\n        feature.end1 = Number.parseInt(tokens[7])\n\n        feature.chr2 = tokens[10]\n        feature.start2 = Number.parseInt(tokens[11])\n        feature.end2 = Number.parseInt(tokens[12])\n\n        feature.name = tokens[0]\n        feature.score = Number(tokens[1])\n        feature.value = Number(tokens[2])\n        feature.color = tokens[4] === '.' ? undefined : tokens[4] === \"0\" ? \"rgb(0,0,0)\" : tokens[4]\n\n        return feature\n    }\n}\n\nfunction findUTRs(exons, cdStart, cdEnd) {\n\n    for (let exon of exons) {\n        const end = exon.end\n        const start = exon.start\n        if (end < cdStart || start > cdEnd) {\n            exon.utr = true\n        } else {\n            if (cdStart >= start && cdStart <= end) {\n                exon.cdStart = cdStart\n            }\n            if (cdEnd >= start && cdEnd <= end) {\n                exon.cdEnd = cdEnd\n            }\n        }\n    }\n}\n\nexport default getDecoder\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport BWReader from \"./bwReader.js\"\nimport pack from \"../feature/featurePacker.js\"\n\nclass BWSource {\n\n    constructor(config, genome) {\n        this.reader = new BWReader(config, genome)\n        this.genome = genome\n        this.format = config.format || \"bigwig\"\n        this.wgValues = {}\n        this.queryable = true\n    }\n\n    async getFeatures({chr, start, end, bpPerPixel, windowFunction}) {\n\n        const isBigWig = this.reader.type === \"bigwig\"\n\n        const features = (chr.toLowerCase() === \"all\") ?\n            (isBigWig ? await this.getWGValues(windowFunction) : []) :\n            await this.reader.readFeatures(chr, start, chr, end, bpPerPixel, windowFunction)\n\n        if (!isBigWig) {\n            pack(features)\n        }\n        return features\n    }\n\n    async getHeader() {\n        return this.reader.loadHeader()\n    }\n\n    getDefaultRange() {\n        if (this.reader.totalSummary !== undefined) {\n            return this.reader.totalSummary.defaultRange\n        } else {\n            return undefined\n        }\n    }\n\n    async defaultVisibilityWindow() {\n        return this.reader.defaultVisibilityWindow\n    }\n\n    async getWGValues(windowFunction) {\n\n        const nominalScreenWidth = 1000      // This doesn't need to be precise\n        const genome = this.genome\n\n        if (this.wgValues[windowFunction]) {\n            return this.wgValues[windowFunction]\n        } else {\n\n            const bpPerPixel = genome.getGenomeLength() / nominalScreenWidth\n            const features = await this.reader.readWGFeatures(bpPerPixel, windowFunction)\n            let wgValues = []\n            for (let f of features) {\n                const chr = f.chr\n                const offset = genome.getCumulativeOffset(chr)\n                const wgFeature = Object.assign({}, f)\n                wgFeature.chr = \"all\"\n                wgFeature.start = offset + f.start\n                wgFeature.end = offset + f.end\n                wgValues.push(wgFeature)\n            }\n            this.wgValues[windowFunction] = wgValues\n            return wgValues\n        }\n    }\n\n    supportsWholeGenome() {\n        return this.reader.type === \"bigwig\"\n    }\n\n    async trackType() {\n        return this.reader.getTrackType()\n    }\n}\n\nexport default BWSource\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport BinaryParser from \"../binary.js\"\nimport {BGZip, igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\n\nconst GZIP_FLAG = 0x1\n\nclass TDFReader {\n\n    constructor(config, genome) {\n        this.config = config\n        this.genome = genome\n        this.path = config.url\n        this.groupCache = {}\n        this.datasetCache = {}\n    }\n\n\n    async readHeader() {\n\n        if (this.magic !== undefined) {\n            return this   // Already read\n        }\n\n        let data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {range: {start: 0, size: 64000}}))\n        let binaryParser = new BinaryParser(new DataView(data))\n        this.magic = binaryParser.getInt()\n        this.version = binaryParser.getInt()\n        this.indexPos = binaryParser.getLong()\n        this.indexSize = binaryParser.getInt()\n        const headerSize = binaryParser.getInt()\n\n\n        if (this.version >= 2) {\n            let nWindowFunctions = binaryParser.getInt()\n            this.windowFunctions = []\n            while (nWindowFunctions-- > 0) {\n                this.windowFunctions.push(binaryParser.getString())\n            }\n        }\n\n        this.trackType = binaryParser.getString()\n        this.trackLine = binaryParser.getString()\n\n        let nTracks = binaryParser.getInt()\n        this.trackNames = []\n        while (nTracks-- > 0) {\n            this.trackNames.push(binaryParser.getString())\n        }\n        this.genomeID = binaryParser.getString()\n        this.flags = binaryParser.getInt()\n        this.compressed = (this.flags & GZIP_FLAG) !== 0\n\n        // Now read index\n        data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {\n            range: {\n                start: this.indexPos,\n                size: this.indexSize\n            }\n        }))\n        binaryParser = new BinaryParser(new DataView(data))\n        this.datasetIndex = {}\n        let nEntries = binaryParser.getInt()\n        while (nEntries-- > 0) {\n            const name = binaryParser.getString()\n            const pos = binaryParser.getLong()\n            const size = binaryParser.getInt()\n            this.datasetIndex[name] = {position: pos, size: size}\n        }\n\n        this.groupIndex = {}\n        nEntries = binaryParser.getInt()\n        while (nEntries-- > 0) {\n            const name = binaryParser.getString()\n            const pos = binaryParser.getLong()\n            const size = binaryParser.getInt()\n            this.groupIndex[name] = {position: pos, size: size}\n        }\n\n        return this\n    }\n\n    async readDataset(chr, windowFunction, zoom) {\n\n        const key = chr + \"_\" + windowFunction + \"_\" + zoom\n\n        if (this.datasetCache[key]) {\n            return this.datasetCache[key]\n\n        } else {\n            await this.readHeader()\n            const wf = (this.version < 2) ? \"\" : \"/\" + windowFunction\n            const zoomString = (chr.toLowerCase() === \"all\" || zoom === undefined) ? \"0\" : zoom.toString()\n\n            let dsName\n            if (windowFunction === \"raw\") {\n                dsName = \"/\" + chr + \"/raw\"\n            } else {\n                dsName = \"/\" + chr + \"/z\" + zoomString + wf\n            }\n            const indexEntry = this.datasetIndex[dsName]\n\n            if (indexEntry === undefined) {\n                return undefined\n            }\n\n            const data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {\n                range: {\n                    start: indexEntry.position,\n                    size: indexEntry.size\n                }\n            }))\n\n            if (!data) {\n                return undefined\n            }\n\n            const binaryParser = new BinaryParser(new DataView(data))\n            let nAttributes = binaryParser.getInt()\n            const attributes = {}\n            while (nAttributes-- > 0) {\n                attributes[binaryParser.getString()] = binaryParser.getString()\n            }\n            const dataType = binaryParser.getString()\n            const tileWidth = binaryParser.getFloat()\n            let nTiles = binaryParser.getInt()\n            const tiles = []\n            while (nTiles-- > 0) {\n                tiles.push({position: binaryParser.getLong(), size: binaryParser.getInt()})\n            }\n\n            const dataset = {\n                name: dsName,\n                attributes: attributes,\n                dataType: dataType,\n                tileWidth: tileWidth,\n                tiles: tiles\n            }\n\n            this.datasetCache[key] = dataset\n            return dataset\n        }\n    }\n\n    async readRootGroup() {\n\n        const genome = this.genome\n        const rootGroup = this.groupCache[\"/\"]\n        if (rootGroup) {\n            return rootGroup\n        } else {\n\n            const group = await this.readGroup(\"/\")\n            const names = group[\"chromosomes\"]\n            const maxZoomString = group[\"maxZoom\"]\n\n            // Now parse out interesting attributes.\n            if (maxZoomString) {\n                this.maxZoom = Number(maxZoomString)\n            }\n\n            const totalCountString = group[\"totalCount\"]\n            if (totalCountString) {\n                group.totalCount = Number(totalCountString)\n            }\n\n            // Chromosome names\n            const chrAliasTable = {}\n            if (names) {\n                names.split(\",\").forEach(function (chr) {\n                    const canonicalName = genome.getChromosomeName(chr)\n                    chrAliasTable[canonicalName] = chr\n                })\n            }\n            this.chrAliasTable = chrAliasTable\n\n            this.groupCache[\"/\"] = group\n            return group\n        }\n    }\n\n    async readGroup(name) {\n\n        const group = this.groupCache[name]\n        if (group) {\n            return group\n        } else {\n\n            await this.readHeader()\n            const indexEntry = this.groupIndex[name]\n            if (indexEntry === undefined) {\n                return undefined\n            }\n\n            const data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {\n                range: {\n                    start: indexEntry.position,\n                    size: indexEntry.size\n                }\n            }))\n\n            if (!data) {\n                return undefined\n            }\n\n            const binaryParser = new BinaryParser(new DataView(data))\n            const group = {name: name}\n            let nAttributes = binaryParser.getInt()\n            while (nAttributes-- > 0) {\n                const key = binaryParser.getString()\n                const value = binaryParser.getString()\n                group[key] = value\n            }\n            this.groupCache[name] = group\n            return group\n        }\n    }\n\n\n    async readTiles(tileIndeces, nTracks) {\n\n        tileIndeces.sort(function (a, b) {\n            return a.position - b.position\n        })\n\n        tileIndeces = tileIndeces.filter(function (idx) {\n            return idx.size > 0\n        })\n\n        if (tileIndeces.length === 0) {\n            return Promise.resolve([])\n        }\n\n        const firstEntry = tileIndeces[0]\n        const lastEntry = tileIndeces[tileIndeces.length - 1]\n        const position = firstEntry.position\n        const size = (lastEntry.position + lastEntry.size) - position\n        const data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {\n            range: {\n                start: position,\n                size: size\n            }\n        }))\n\n        const tiles = []\n\n        // Loop through and decode tiles\n        for (let indexEntry of tileIndeces) {\n            const start = indexEntry.position - position\n            const size = indexEntry.size\n            if (size > 0) {\n                let tileData\n                if (this.compressed) {\n                    const plain = BGZip.inflate(data.slice(start, start + size))\n                    tileData = plain.buffer\n                } else {\n                    tileData = data.slice(start, start + size)\n                }\n\n                const binaryParser = new BinaryParser(new DataView(tileData))\n                const type = binaryParser.getString()\n                let tile\n                switch (type) {\n                    case \"fixedStep\":\n                        tile = createFixedStep(binaryParser, nTracks)\n                        break\n                    case \"variableStep\":\n                        tile = createVariableStep(binaryParser, nTracks)\n                        break\n                    case \"bed\":\n                    case \"bedWithName\":\n                        tile = createBed(binaryParser, nTracks, type)\n                        break\n                    default:\n                        throw \"Unknown tile type: \" + type\n                }\n                tiles.push(tile)\n            }\n        }\n        return tiles\n    }\n\n    async readTile(indexEntry, nTracks) {\n\n        let data = await igvxhr.loadArrayBuffer(this.path, buildOptions(this.config, {\n            range: {\n                start: indexEntry.position,\n                size: indexEntry.size\n            }\n        }))\n\n        if (this.compressed) {\n            const plain = BGZip.inflate(data)\n            data = plain.buffer\n        }\n\n        const binaryParser = new BinaryParser(new DataView(data))\n        const type = binaryParser.getString()\n        switch (type) {\n            case \"fixedStep\":\n                return createFixedStep(binaryParser, nTracks)\n            case \"variableStep\":\n                return createVariableStep(binaryParser, nTracks)\n            case \"bed\":\n            case \"bedWithName\":\n                return createBed(binaryParser, nTracks, type)\n            default:\n                throw \"Unknown tile type: \" + type\n        }\n    }\n\n}\n\nfunction createFixedStep(binaryParser, nTracks) {\n    const nPositions = binaryParser.getInt()\n    const start = binaryParser.getInt()\n    const span = binaryParser.getFloat()\n\n    const data = []\n    let nt = nTracks\n    while (nt-- > 0) {\n        let np = nPositions\n        const dtrack = []\n        while (np-- > 0) {\n            dtrack.push(binaryParser.getFloat())\n        }\n        data.push(dtrack)\n    }\n\n    return {\n        type: \"fixedStep\",\n        start: start,\n        span: span,\n        data: data,\n        nTracks: nTracks,\n        nPositions: nPositions\n    }\n}\n\nfunction createVariableStep(binaryParser, nTracks) {\n\n    const tileStart = binaryParser.getInt()\n    const span = binaryParser.getFloat()\n    const nPositions = binaryParser.getInt()\n    const start = []\n\n    let np = nPositions\n    while (np-- > 0) {\n        start.push(binaryParser.getInt())\n    }\n    const nS = binaryParser.getInt()  // # of samples, ignored but should === nTracks\n\n    const data = []\n    let nt = nTracks\n    while (nt-- > 0) {\n        np = nPositions\n        const dtrack = []\n        while (np-- > 0) {\n            dtrack.push(binaryParser.getFloat())\n        }\n        data.push(dtrack)\n    }\n\n    return {\n        type: \"variableStep\",\n        tileStart: tileStart,\n        span: span,\n        start: start,\n        data: data,\n        nTracks: nTracks,\n        nPositions: nPositions\n    }\n}\n\nfunction createBed(binaryParser, nTracks, type) {\n\n    const nPositions = binaryParser.getInt()\n\n    let n = nPositions\n    const start = []\n    while (n-- > 0) {\n        start.push(binaryParser.getInt())\n    }\n\n    n = nPositions\n    const end = []\n    while (n-- > 0) {\n        end.push(binaryParser.getInt())\n    }\n\n    const nS = binaryParser.getInt()  // # of samples, ignored but should === nTracks\n    const data = []\n    let nt = nTracks\n    while (nt-- > 0) {\n        let np = nPositions\n        const dtrack = []\n        while (np-- > 0) {\n            dtrack.push(binaryParser.getFloat())\n        }\n        data.push(dtrack)\n    }\n\n    if (type === \"bedWithName\") {\n        n = nPositions\n        const name = []\n        while (n-- > 0) {\n            name.push(binaryParser.getString())\n        }\n    }\n\n    return {\n        type: type,\n        start: start,\n        end: end,\n        data: data,\n        nTracks: nTracks,\n        nPositions: nPositions\n    }\n\n}\n\nexport default TDFReader","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport TDFReader from \"./tdfReader.js\"\nimport GenomicInterval from \"../genome/genomicInterval.js\"\n\nclass TDFSource {\n\n    constructor(config, genome) {\n        this.genome = genome\n        this.windowFunction = config.windowFunction || \"mean\"\n        this.reader = new TDFReader(config, genome)\n        this.queryable = true\n    }\n\n    async getFeatures({chr, start, end, bpPerPixel}) {\n\n        if (chr.toLowerCase() === \"all\") {\n            const wgFeatures = []\n            const genome = this.genome\n            const chrNames = this.genome.wgChromosomeNames\n            if (chrNames) {\n                for (let c of genome.wgChromosomeNames) {\n                    const len = genome.getChromosome(c).bpLength\n                    bpPerPixel = len / 1000\n                    const chrFeatures = await this._getFeatures(c, 0, len, bpPerPixel)\n                    if (chrFeatures) {\n                        for (let f of chrFeatures) {\n                            const wg = Object.assign({}, f)\n                            wg.chr = \"all\"\n                            wg.start = genome.getGenomeCoordinate(f.chr, f.start)\n                            wg.end = genome.getGenomeCoordinate(f.chr, f.end)\n                            wg._f = f\n                            wgFeatures.push(wg)\n                        }\n                    }\n                }\n            }\n            return wgFeatures\n\n        } else {\n            return this._getFeatures(chr, start, end, bpPerPixel)\n        }\n    }\n\n    async _getFeatures(chr, start, end, bpPerPixel) {\n        const genomicInterval = new GenomicInterval(chr, start, end)\n        const genome = this.genome\n\n\n        if (!this.rootGroup) {\n            this.rootGroup = await this.reader.readRootGroup()\n            if (!this.normalizationFactor) {\n                const totalCount = this.rootGroup.totalCount\n                if (totalCount) {\n                    this.normalizationFactor = 1.0e6 / totalCount\n                }\n            }\n        }\n\n        genomicInterval.bpPerPixel = bpPerPixel\n        const zoom = zoomLevelForScale(chr, bpPerPixel, genome)\n        let queryChr = this.reader.chrAliasTable[chr]\n        let maxZoom = this.reader.maxZoom\n        if (queryChr === undefined) queryChr = chr\n        if (maxZoom === undefined) maxZoom = -1\n\n        const wf = zoom > maxZoom ? \"raw\" : this.windowFunction\n        const dataset = await this.reader.readDataset(queryChr, wf, zoom)\n        if (dataset == null) {\n            return []\n        }\n\n        const tileWidth = dataset.tileWidth\n        const startTile = Math.floor(start / tileWidth)\n        const endTile = Math.floor(end / tileWidth)\n        const NTRACKS = 1   // TODO read this\n        const tiles = await this.reader.readTiles(dataset.tiles.slice(startTile, endTile + 1), NTRACKS)\n        const features = []\n        for (let tile of tiles) {\n            switch (tile.type) {\n                case \"bed\":\n                    decodeBedTile(tile, chr, start, end, bpPerPixel, features)\n                    break\n                case \"variableStep\":\n                    decodeVaryTile(tile, chr, start, end, bpPerPixel, features)\n                    break\n                case \"fixedStep\":\n                    decodeFixedTile(tile, chr, start, end, bpPerPixel, features)\n                    break\n                default:\n                    throw (\"Unknown tile type: \" + tile.type)\n            }\n        }\n        features.sort(function (a, b) {\n            return a.start - b.start\n        })\n\n        return features\n    }\n\n    get supportsWholeGenome() {\n        return true\n    }\n}\n\nfunction decodeBedTile(tile, chr, bpStart, bpEnd, bpPerPixel, features) {\n\n    const nPositions = tile.nPositions\n    const starts = tile.start\n    const ends = tile.end\n    const data = tile.data[0]   // Single track for now\n    for (let i = 0; i < nPositions; i++) {\n        const s = starts[i]\n        const e = ends[i]\n        if (e < bpStart) continue\n        if (s > bpEnd) break\n        features.push({\n            chr: chr,\n            start: s,\n            end: e,\n            value: data[i]\n        })\n    }\n}\n\nfunction decodeVaryTile(tile, chr, bpStart, bpEnd, bpPerPixel, features) {\n\n    const nPositions = tile.nPositions\n    const starts = tile.start\n    const span = tile.span\n    const data = tile.data[0]   // Single track for now\n    for (let i = 0; i < nPositions; i++) {\n        const s = starts[i]\n        const e = s + span\n        if (e < bpStart) continue\n        if (s > bpEnd) break\n        features.push({\n            chr: chr,\n            start: s,\n            end: e,\n            value: data[i]\n        })\n    }\n}\n\nfunction decodeFixedTile(tile, chr, bpStart, bpEnd, bpPerPixel, features) {\n\n    const nPositions = tile.nPositions\n    let s = tile.start\n    const span = tile.span\n    const data = tile.data[0]   // Single track for now\n\n    for (let i = 0; i < nPositions; i++) {\n        const e = s + span\n        if (s > bpEnd) break\n        if (e >= bpStart) {\n            if (!Number.isNaN(data[i])) {\n                features.push({\n                    chr: chr,\n                    start: s,\n                    end: e,\n                    value: data[i]\n                })\n            }\n        }\n        s = e\n    }\n}\n\n\nvar log2 = Math.log(2)\n\nfunction zoomLevelForScale(chr, bpPerPixel, genome) {\n\n    // Convert bpPerPixel to IGV \"zoom\" level.   This is a bit convoluted,  IGV computes zoom levels assuming\n    // display in a 700 pixel window.  The fully zoomed out view of a chromosome is zoom level \"0\".\n    // Zoom level 1 is magnified 2X,  and so forth\n\n    var chrSize = genome.getChromosome(chr).bpLength\n\n    return Math.ceil(Math.log(Math.max(0, (chrSize / (bpPerPixel * 700)))) / log2)\n}\n\nexport default TDFSource\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014-2015 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {FeatureCache} from \"../../node_modules/igv-utils/src/index.js\"\nimport {computeWGFeatures, packFeatures} from \"./featureUtils.js\"\n\n/**\n * feature source for features supplied directly, as opposed to reading and parsing from a file or webservice\n *\n * @param config\n * @constructor\n */\nclass StaticFeatureSource {\n\n    constructor(config, genome) {\n\n        this.config = config\n        this.genome = genome\n        this.queryable = false\n        this.searchable = config.searchable !== false  // searchable by default\n        this.updateFeatures(config.features)\n    }\n\n    updateFeatures(features) {\n        features = fixFeatures(features, this.genome)\n        packFeatures(features)\n        if (this.config.mappings) {\n            mapProperties(features, this.config.mappings)\n        }\n        this.featureCache = new FeatureCache(features, this.genome)\n\n        if (this.searchable || this.config.searchableFields) {\n            this.genome.addFeaturesToDB(features, this.config)\n        }\n    }\n\n    /**\n     * Required function for all data source objects.  Fetches features for the\n     * range requested.\n     *\n     * This function is complex due to the variety of reader types backing it, some indexed, some queryable,\n     * some not.\n     *\n     * @param chr\n     * @param start\n     * @param end\n     * @param bpPerPixel\n     */\n    async getFeatures({chr, start, end, bpPerPixel, visibilityWindow}) {\n\n        const genome = this.genome\n        const queryChr = genome ? genome.getChromosomeName(chr) : chr\n        const isWholeGenome = (\"all\" === queryChr.toLowerCase())\n\n        // Various conditions that can require a feature load\n        //   * view is \"whole genome\" but no features are loaded\n        //   * cache is disabled\n        //   * cache does not contain requested range\n        if (isWholeGenome) {\n            return computeWGFeatures(this.featureCache.getAllFeatures(), this.genome, this.maxWGCount)\n        } else {\n            return this.featureCache.queryFeatures(queryChr, start, end)\n        }\n    }\n\n    //\n    // supportsWholeGenome() {\n    //    return true\n    // }\n\n    getAllFeatures() {\n        return this.featureCache.getAllFeatures()\n    }\n\n    supportsWholeGenome() {\n        return true\n    }\n\n\n}\n\n\n/**\n * This function is used to apply properties normally added during parsing to  features supplied directly in the\n * config as an array of objects.   At the moment the only application is bedpe type features.\n * @param features\n */\nfunction fixFeatures(features, genome) {\n\n    if (genome) {\n        for (let feature of features) {\n            feature.chr = genome.getChromosomeName(feature.chr)\n        }\n    }\n\n    return features\n}\n\n\n\nfunction mapProperties(features, mappings) {\n    let mappingKeys = Object.keys(mappings)\n    features.forEach(function (f) {\n        mappingKeys.forEach(function (key) {\n            f[key] = f[mappings[key]]\n        })\n    })\n}\n\n\n\nexport default StaticFeatureSource\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014-2015 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport TextFeatureSource from \"./textFeatureSource.js\"\nimport BWSource from \"../bigwig/bwSource.js\"\nimport TDFSource from \"../tdf/tdfSource.js\"\nimport StaticFeatureSource from \"./staticFeatureSource.js\"\n\nconst bbFormats = new Set(['bigwig', 'bw', 'bigbed', 'bb', 'biginteract', 'biggenepred', 'bignarrowpeak'])\n\nfunction FeatureSource(config, genome) {\n\n    const format = config.format ? config.format.toLowerCase() : undefined\n\n    if (config.features) {\n        return new StaticFeatureSource(config, genome)\n    } else if (bbFormats.has(format)) {\n        return new BWSource(config, genome)\n    } else if (\"tdf\" === format) {\n        return new TDFSource(config, genome)\n    } else {\n        return new TextFeatureSource(config, genome)\n    }\n}\n\nexport default FeatureSource\n","import {FileUtils, StringUtils} from '../../node_modules/igv-utils/src/index.js'\nimport FeatureSource from '../feature/featureSource.js'\nimport {appleCrayonRGBA} from '../util/colorPalletes.js'\nimport {computeWGFeatures} from \"../feature/featureUtils.js\"\nimport * as TrackUtils from \"../util/trackUtils.js\"\n\n\nconst appleCrayonColorName = 'nickel'\n\nconst ROI_DEFAULT_ALPHA = 2 / 16\n\nconst ROI_DEFAULT_COLOR = appleCrayonRGBA(appleCrayonColorName, ROI_DEFAULT_ALPHA)\nconst ROI_DEFAULT_HEADER_COLOR = 'rgb(190,190,190)'\n\nconst ROI_USER_HEADER_DEFINED_COLOR = 'rgba(155,185,129)'\nconst ROI_USER_DEFINED_COLOR = ROI_DEFAULT_COLOR\n\nclass ROISet {\n\n    constructor(config, genome) {\n\n        this.url = config.url\n\n        if (config.name) {\n            this.name = config.name\n        } else if (config.url && FileUtils.isFile(config.url)) {\n            this.name = config.url.name\n        } else if (config.url && StringUtils.isString(config.url) && !config.url.startsWith(\"data:\")) {\n            this.name = FileUtils.getFilename(config.url)\n        }\n\n        this.isUserDefined = config.isUserDefined\n\n        if (config.features) {\n            this.featureSource = new DynamicFeatureSource(config.features, genome)\n        } else {\n            if (config.format) {\n                config.format = config.format.toLowerCase()\n            } else {\n                const filename = FileUtils.getFilename(config.url)\n                config.format = TrackUtils.inferFileFormat(filename)\n            }\n            this.featureSource = config.featureSource || FeatureSource(config, genome)\n        }\n\n        if (true === this.isUserDefined) {\n            this.color = config.color || ROI_USER_DEFINED_COLOR\n            this.headerColor = ROI_USER_HEADER_DEFINED_COLOR\n\n        } else {\n\n            this.color = config.color || ROI_DEFAULT_COLOR\n            this.headerColor = ROI_DEFAULT_HEADER_COLOR\n\n            // Use body color with alpha pinned to 1\n            // const [ r, g, b, discard ] = rgbaStringTokens(this.color)\n            // this.headerColor = `rgba(${ r },${ g },${ b },${ 1.0 })`\n\n        }\n    }\n\n    async getFeatures(chr, start, end) {\n        return this.featureSource.getFeatures({chr, start, end})\n    }\n\n    async getAllFeatures() {\n        return typeof this.featureSource.getAllFeatures === 'function' ? await this.featureSource.getAllFeatures() : {}\n    }\n\n    addFeature(feature) {\n        if (this.isUserDefined) {\n            this.featureSource.addFeature(feature)\n        } else {\n            console.error(\"Attempt to add ROI to non user-defined set\")\n        }\n    }\n\n    removeFeature(feature) {\n        if (this.isUserDefined) {\n            this.featureSource.removeFeature(feature)\n        } else {\n            console.error(\"Attempt to remove ROI from non user-defined set\")\n        }\n    }\n\n    toJSON() {\n        if (this.url) {\n            return {name: this.name, color: this.color, url: this.url, isUserDefined: this.isUserDefined}\n        } else {\n            const featureMap = this.featureSource.getAllFeatures()\n            const features = []\n            for (let chr of Object.keys(featureMap)) {\n                for (let f of featureMap[chr]) {\n                    features.push(f)\n                }\n            }\n            return {name: this.name, color: this.color, features: features, isUserDefined: this.isUserDefined}\n        }\n    }\n\n    dispose() {\n        for (let key of Object.keys(this)) {\n            this[key] = undefined\n        }\n    }\n\n}\n\nconst SCREEN_COORDS_WIDTH_THRESHOLD = 3\n\nfunction screenCoordinates(regionStartBP, regionEndBP, bpStart, bpp) {\n\n    let xStart = Math.round((regionStartBP - bpStart) / bpp)\n    const xEnd = Math.round((regionEndBP - bpStart) / bpp)\n\n    let width = xEnd - xStart\n\n    if (width < SCREEN_COORDS_WIDTH_THRESHOLD) {\n        width = SCREEN_COORDS_WIDTH_THRESHOLD\n        xStart -= 1\n    }\n\n    return {x: xStart, width}\n}\n\n\n/**\n * Special feature source that allows addition of features dynamically\n */\nclass DynamicFeatureSource {\n\n    constructor(features, genome) {\n        this.featureMap = {}\n        this.genome = genome\n\n        for (let feature of features) {\n\n            // Store as canonical chr name (i.e. translate aliases)\n            const chrKey = genome ? genome.getChromosomeName(feature.chr) : feature.chr\n\n            let featureList = this.featureMap[chrKey]\n            if (!featureList) {\n                featureList = []\n                this.featureMap[chrKey] = featureList\n            }\n            featureList.push(feature)\n        }\n\n        for (let key of Object.keys(this.featureMap)) {\n            this.featureMap[key].sort((a, b) => a.start - b.start)\n        }\n    }\n\n    getFeatures({chr, start, end}) {\n        if (chr.toLowerCase() === 'all') {\n            return computeWGFeatures(this.featureMap, this.genome)\n        } else {\n            // TODO -- this use of filter is O(N), and might not scale well for large feature lists.\n            const featureList = this.featureMap[chr]\n            return featureList ? featureList.filter(feature => feature.end > start && feature.start < end) : []\n        }\n    }\n\n    getAllFeatures() {\n        return this.featureMap\n    }\n\n    supportsWholeGenome() {\n        return true\n    }\n\n    addFeature(feature) {\n        let featureList = this.featureMap[feature.chr]\n        if (!featureList) {\n            featureList = []\n            this.featureMap[feature.chr] = featureList\n        }\n        featureList.push(feature)\n        featureList.sort((a, b) => a.start - b.start)\n    }\n\n    removeFeature({chr, start, end}) {\n\n        if (this.featureMap[chr]) {\n            const match = `${chr}-${start}-${end}`\n            this.featureMap[chr] = this.featureMap[chr].filter(feature => match !== `${feature.chr}-${feature.start}-${feature.end}`)\n        }\n    }\n}\n\n\nexport {ROI_DEFAULT_COLOR, ROI_USER_DEFINED_COLOR, screenCoordinates}\n\nexport default ROISet\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from \"../node_modules/igv-ui/dist/igv-ui.js\"\nimport {validateGenomicExtent} from \"./util/igvUtils.js\"\nimport GenomeUtils from './genome/genome.js'\nimport { ROI_USER_DEFINED_COLOR } from \"./roi/ROISet.js\"\n\nconst RULER_SWEEPER_COLOR = 'rgba(68, 134, 247, 0.25)'\n\nclass RulerSweeper {\n\n    constructor(rulerViewport, column, browser, referenceFrame) {\n\n        this.rulerViewport = rulerViewport\n\n        this.rulerSweeper = DOMUtils.div({class: 'igv-ruler-sweeper'})\n        column.appendChild(this.rulerSweeper)\n\n        this.browser = browser\n        this.referenceFrame = referenceFrame\n\n        this.isMouseHandlers = undefined\n\n        this.addBrowserObserver()\n    }\n\n    addBrowserObserver() {\n\n        const observerHandler = () => {\n            if (this.referenceFrame) {\n                GenomeUtils.isWholeGenomeView(this.referenceFrame.chr) ? this.removeMouseHandlers() : this.addMouseHandlers()\n            }\n        }\n\n        // Viewport Content\n        this.boundObserverHandler = observerHandler.bind(this)\n        this.browser.on('locuschange', this.boundObserverHandler)\n\n    }\n\n    removeBrowserObserver() {\n        this.browser.off('locuschange', this.boundObserverHandler)\n    }\n\n    addMouseHandlers() {\n\n        if (true === this.isMouseHandlers) {\n            return\n        }\n\n        const threshold = 1\n\n        let isMouseDown\n        let isMouseIn\n        let mouseDownX\n        let left\n        let width\n        let dx\n\n        // Viewport Content\n        this.boundContentMouseDownHandler = contentMouseDownHandler.bind(this)\n        this.rulerViewport.contentDiv.addEventListener('mousedown', this.boundContentMouseDownHandler)\n\n        function contentMouseDownHandler(event) {\n\n            isMouseDown = true\n            isMouseIn = true\n\n            const {x} = DOMUtils.translateMouseCoordinates(event, this.rulerViewport.contentDiv)\n            left = mouseDownX = x\n\n            width = threshold\n\n\n            this.rulerSweeper.style.display = 'block'\n            this.rulerSweeper.style.backgroundColor = true === event.shiftKey ? ROI_USER_DEFINED_COLOR : RULER_SWEEPER_COLOR\n\n            this.rulerSweeper.style.left = `${left}px`\n            this.rulerSweeper.style.width = `${width}px`\n\n        }\n\n        // Document\n        this.boundDocumentMouseMoveHandler = documentMouseMoveHandler.bind(this)\n        document.addEventListener('mousemove', this.boundDocumentMouseMoveHandler)\n\n        function documentMouseMoveHandler(event) {\n\n            let mouseCurrentX\n\n            if (isMouseDown && isMouseIn) {\n\n                const {x} = DOMUtils.translateMouseCoordinates(event, this.rulerViewport.contentDiv)\n                mouseCurrentX = Math.max(Math.min(x, this.rulerViewport.contentDiv.clientWidth), 0)\n\n                dx = mouseCurrentX - mouseDownX\n\n                width = Math.abs(dx)\n                this.rulerSweeper.style.width = `${width}px`\n\n                if (dx < 0) {\n                    left = mouseDownX + dx\n                    this.rulerSweeper.style.left = `${left}px`\n                }\n\n            }\n\n        }\n\n        this.boundDocumentMouseUpHandler = documentMouseUpHandler.bind(this)\n        document.addEventListener('mouseup', this.boundDocumentMouseUpHandler)\n\n        function documentMouseUpHandler(event) {\n\n            let genomicExtent\n\n            if (true === isMouseDown && true === isMouseIn) {\n\n                isMouseDown = isMouseIn = undefined\n\n                this.rulerSweeper.style.display = 'none'\n\n                if (width > threshold) {\n\n                    genomicExtent =\n                        {\n                            start: Math.floor(this.referenceFrame.calculateEnd(left)),\n                            end: Math.floor(this.referenceFrame.calculateEnd(left + width)),\n                        }\n\n\n                    const shiftKeyPressed = event.shiftKey\n\n                    if (true === shiftKeyPressed) {\n                        this.browser.roiManager.updateUserDefinedROISet(Object.assign({chr: this.referenceFrame.chr}, genomicExtent))\n                    } else {\n\n                        validateGenomicExtent(this.browser.genome.getChromosome(this.referenceFrame.chr).bpLength, genomicExtent, this.browser.minimumBases())\n                        updateReferenceFrame(this.referenceFrame, genomicExtent, this.rulerViewport.contentDiv.clientWidth)\n                        this.browser.updateViews(this.referenceFrame)\n\n                    }\n\n                }\n\n            }\n\n        }\n\n        this.isMouseHandlers = true\n    }\n\n    removeMouseHandlers() {\n        this.rulerViewport.contentDiv.removeEventListener('mousedown', this.boundContentMouseDownHandler)\n        document.removeEventListener('mousemove', this.boundDocumentMouseMoveHandler)\n        document.removeEventListener('mouseup', this.boundDocumentMouseUpHandler)\n        this.isMouseHandlers = false\n    }\n\n    dispose() {\n        this.removeBrowserObserver()\n        this.removeMouseHandlers()\n        this.rulerSweeper.remove()\n    }\n\n}\n\nfunction updateReferenceFrame(referenceFrame, genomicExtent, pixelWidth) {\n    referenceFrame.start = Math.round(genomicExtent.start)\n    referenceFrame.end = Math.round(genomicExtent.end)\n    referenceFrame.bpPerPixel = (referenceFrame.end - referenceFrame.start) / pixelWidth\n}\n\nexport default RulerSweeper\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\nclass PairedAlignment {\n\n    constructor(firstAlignment) {\n\n        this.paired = true\n        this.firstAlignment = firstAlignment\n        this.chr = firstAlignment.chr\n        this.readName = firstAlignment.readName\n\n        if (firstAlignment.start < firstAlignment.mate.position) {\n            this.start = firstAlignment.start\n            this.scStart = firstAlignment.scStart\n            this.connectingStart = firstAlignment.start + firstAlignment.lengthOnRef\n            this.connectingEnd = firstAlignment.mate.position\n        } else {\n            this.start = firstAlignment.mate.position\n            this.scStart = this.start\n            this.connectingStart = firstAlignment.mate.position\n            this.connectingEnd = firstAlignment.start\n        }\n\n        this.end = Math.max(firstAlignment.mate.position, firstAlignment.start + firstAlignment.lengthOnRef)  // Approximate\n        this.lengthOnRef = this.end - this.start\n\n        let scEnd = Math.max(this.end, firstAlignment.scStart + firstAlignment.scLengthOnRef)\n        this.scLengthOnRef = scEnd - this.scStart\n\n    }\n\n    setSecondAlignment(secondAlignment) {\n\n        // TODO -- check the chrs are equal,  error otherwise\n        this.secondAlignment = secondAlignment\n        const firstAlignment = this.firstAlignment\n\n        if (secondAlignment.start > firstAlignment.start) {\n            this.connectingEnd = secondAlignment.start\n        } else {\n            this.connectingStart = secondAlignment.start + secondAlignment.lengthOnRef\n        }\n\n        this.start = Math.min(firstAlignment.start, secondAlignment.start)\n        this.end = Math.max(firstAlignment.start + firstAlignment.lengthOnRef, secondAlignment.start + secondAlignment.lengthOnRef)\n        this.lengthOnRef = this.end - this.start\n\n        this.scStart = Math.min(firstAlignment.scStart, secondAlignment.scStart)\n        const scEnd = Math.max(firstAlignment.scStart + firstAlignment.scLengthOnRef, secondAlignment.scStart + secondAlignment.scLengthOnRef)\n        this.scLengthOnRef = scEnd - this.scStart\n\n    }\n\n    containsLocation(genomicLocation, showSoftClips) {\n        const s = showSoftClips ? this.scStart : this.start\n        const l = showSoftClips ? this.scLengthOnRef : this.lengthOnRef\n        return (genomicLocation >= s && genomicLocation <= (s + l))\n    }\n\n    alignmentContaining(genomicLocation, showSoftClips) {\n        if (this.firstAlignment.containsLocation(genomicLocation, showSoftClips)) {\n            return this.firstAlignment\n        } else if (this.secondAlignment && this.secondAlignment.containsLocation(genomicLocation, showSoftClips)) {\n            return this.secondAlignment\n        } else {\n            return undefined\n        }\n    }\n\n    popupData(genomicLocation) {\n\n        let nameValues = this.firstAlignment.popupData(genomicLocation)\n\n        if (this.secondAlignment) {\n            nameValues.push(\"-------------------------------\")\n            nameValues = nameValues.concat(this.secondAlignment.popupData(genomicLocation))\n        }\n        return nameValues\n    }\n\n    isPaired() {\n        return true // By definition\n    }\n\n    isMateMapped() {\n        return true // By definition\n    }\n\n    isProperPair() {\n        return this.firstAlignment.isProperPair()\n    }\n\n    get fragmentLength() {\n        return Math.abs(this.firstAlignment.fragmentLength)\n    }\n\n    firstOfPairStrand() {\n\n        if (this.firstAlignment.isFirstOfPair()) {\n            return this.firstAlignment.strand\n        } else if (this.secondAlignment && this.secondAlignment.isFirstOfPair()) {\n            return this.secondAlignment.strand\n        } else {\n            return this.firstAlignment.mate.strand    // Assumption is mate is first-of-pair\n        }\n    }\n\n    hasTag(str) {\n        return this.firstAlignment.hasTag(str) || (this.secondAlignment &&  this.secondAlignment.hasTag(str))\n    }\n}\n\nexport default PairedAlignment\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst isString = StringUtils.isString\nconst hashCode = StringUtils.hashCode\n\nclass BamAlignmentRow {\n\n    constructor() {\n\n        this.alignments = []\n        this.score = undefined\n    }\n\n    findAlignment(genomicLocation) {\n\n        const alignmentContains = (a, genomicLocation) => {\n            return genomicLocation >= a.start && genomicLocation < a.start + a.lengthOnRef\n        }\n\n        // find single alignment that overlaps sort location\n        let centerAlignment\n        for (let i = 0; i < this.alignments.length; i++) {\n            const a = this.alignments[i]\n            if (genomicLocation >= a.start && genomicLocation < a.start + a.lengthOnRef) {\n                if (a.paired) {\n                    if (a.firstAlignment && alignmentContains(a.firstAlignment, genomicLocation)) {\n                        centerAlignment = a.firstAlignment\n                    } else if (a.secondAlignment && alignmentContains(a.secondAlignment, genomicLocation)) {\n                        centerAlignment = a.secondAlignment\n                    }\n                } else {\n                    centerAlignment = a\n                }\n                break\n            }\n        }\n\n        return centerAlignment\n\n    }\n\n    getSortValue({position, option, tag}, alignmentContainer) {\n\n        if (!option) option = \"BASE\"\n\n        const alignment = this.findAlignment(position)\n        if (undefined === alignment) {  // This condition should never occur\n            return Number.MAX_VALUE\n        }\n\n        switch (option) {\n            case \"NUCLEOTIDE\":\n            case \"BASE\": {\n                return calculateBaseScore(alignment, alignmentContainer, position)\n            }\n            case \"STRAND\":\n                return alignment.strand ? 1 : -1\n            case \"START\":\n                return alignment.start\n            case \"TAG\": {\n                return alignment.tags()[tag]\n            }\n            case \"READ_NAME\":\n                return alignment.readName\n            case \"INSERT_SIZE\":\n                return -Math.abs(alignment.fragmentLength)\n            case \"GAP_SIZE\":\n                return -alignment.gapSizeAt(position)\n            case \"MATE_CHR\":\n                return alignment.mate\n            case \"MQ\":\n                return alignment.mq === undefined ? Number.MAX_VALUE : -alignment.mq\n            case \"ALIGNED_READ_LENGTH\":\n                return -alignment.lengthOnRef\n            default:\n                return Number.MAX_VALUE\n        }\n\n\n        function calculateBaseScore(alignment, alignmentContainer, genomicLocation) {\n\n            let reference\n            const idx = Math.floor(genomicLocation) - alignmentContainer.start\n            if (idx < alignmentContainer.sequence.length) {\n                reference = alignmentContainer.sequence.charAt(idx)\n            }\n            if (!reference) {\n                return 0\n            }\n            const base = alignment.readBaseAt(genomicLocation)\n            const quality = alignment.readBaseQualityAt(genomicLocation)\n\n            const coverageMap = alignmentContainer.coverageMap\n            const coverageMapIndex = Math.floor(genomicLocation - coverageMap.bpStart)\n            const coverage = coverageMap.coverage[coverageMapIndex]\n\n            // Insertions.  These are additive with base scores as they occur between bases, so you can have a\n            // base mismatch AND an insertion\n            let baseScore = 0\n            if (alignment.insertions) {\n                for (let ins of alignment.insertions) {\n                    if (ins.start === genomicLocation) {\n                        baseScore = -coverage.ins\n                    }\n                }\n            }\n\n\n            if (!base) {\n                // Either deletion or skipped (splice junction)\n                const delCount = coverage.del\n                if (delCount > 0) {\n                    baseScore -= delCount\n                } else if (baseScore === 0) {    // Don't modify insertion score, if any\n                    baseScore = 1\n                }\n            } else {\n                reference = reference.toUpperCase()\n                if ('N' === base && baseScore === 0) {\n                    baseScore = 2\n                } else if ((reference === base || '=' === base) && baseScore === 0) {\n                    baseScore = 4 - quality / 1000\n                } else if (\"X\" === base || reference !== base) {\n                    const count = coverage[\"pos\" + base] + coverage[\"neg\" + base]\n                    baseScore -= (count + (quality / 1000))\n                }\n            }\n\n\n            return baseScore\n        }\n    }\n\n\n}\n\nexport default BamAlignmentRow\n","import PairedAlignment from \"./pairedAlignment.js\"\nimport BamAlignmentRow from \"./bamAlignmentRow.js\"\n\nconst alignmentSpace = 2\n\nfunction canBePaired(alignment) {\n    return alignment.isPaired() &&\n        alignment.mate &&\n        alignment.isMateMapped() &&\n        alignment.chr === alignment.mate.chr &&\n        (alignment.isFirstOfPair() || alignment.isSecondOfPair()) && !(alignment.isSecondary() || alignment.isSupplementary())\n}\n\n\nfunction pairAlignments(rows) {\n\n    const pairCache = {}\n    const result = []\n\n    for (let row of rows) {\n        for (let alignment of row.alignments) {\n            if (canBePaired(alignment)) {\n                let pairedAlignment = pairCache[alignment.readName]\n                if (pairedAlignment) {\n                    pairedAlignment.setSecondAlignment(alignment)\n                    pairCache[alignment.readName] = undefined   // Don't need to track this anymore.\n                } else {\n                    pairedAlignment = new PairedAlignment(alignment)\n                    pairCache[alignment.readName] = pairedAlignment\n                    result.push(pairedAlignment)\n                }\n            } else {\n                result.push(alignment)\n            }\n        }\n    }\n    return result\n}\n\nfunction unpairAlignments(rows) {\n    const result = []\n    for (let row of rows) {\n        for (let alignment of row.alignments) {\n            if (alignment instanceof PairedAlignment) {\n                if (alignment.firstAlignment) result.push(alignment.firstAlignment)  // shouldn't need the null test\n                if (alignment.secondAlignment) result.push(alignment.secondAlignment)\n            } else {\n                result.push(alignment)\n            }\n        }\n    }\n    return result\n}\n\nfunction packAlignmentRows(alignments, start, end, showSoftClips) {\n\n    //console.log(`packAlignmentRows ${start} ${end}`)\n    //const t0 = Date.now()\n\n    if (!alignments) {\n        return undefined\n    } else if (alignments.length === 0) {\n        return []\n    } else {\n        alignments.sort(function (a, b) {\n            return showSoftClips ? a.scStart - b.scStart : a.start - b.start\n        })\n\n        const packedAlignmentRows = []\n        let alignmentRow\n        let nextStart = 0\n        let nextIDX = 0\n        const allocated = new Set()\n        const startNewRow = () => {\n            alignmentRow = new BamAlignmentRow()\n            packedAlignmentRows.push(alignmentRow)\n            nextStart = 0\n            nextIDX = 0\n            allocated.clear()\n        }\n        startNewRow()\n\n        while (alignments.length > 0) {\n            if (nextIDX >= 0 && nextIDX < alignments.length) {\n                const alignment = alignments[nextIDX]\n                allocated.add(alignment)\n                alignmentRow.alignments.push(alignment)\n                nextStart = showSoftClips ?\n                    alignment.scStart + alignment.scLengthOnRef + alignmentSpace :\n                    alignment.start + alignment.lengthOnRef + alignmentSpace\n                nextIDX = binarySearch(alignments, (a) => (showSoftClips ? a.scStart : a.start) > nextStart, nextIDX)\n            } else {\n                // Remove allocated alignments and start new row\n                alignments = alignments.filter(a => !allocated.has(a))\n                startNewRow()\n            }\n        }\n        //console.log(`Done in ${Date.now() - t0} ms`)\n        return packedAlignmentRows\n    }\n}\n\n\n/**\n * Return 0 <= i <= array.length such that !pred(array[i - 1]) && pred(array[i]).\n *\n * returns an index 0 ≤ i ≤ array.length such that the given predicate is false for array[i - 1] and true for array[i]* *\n */\nfunction binarySearch(array, pred, min) {\n    let lo = min - 1, hi = array.length\n    while (1 + lo < hi) {\n        const mi = lo + ((hi - lo) >> 1)\n        if (pred(array[mi])) {\n            hi = mi\n        } else {\n            lo = mi\n        }\n    }\n    return hi\n}\n\n\nexport {canBePaired, pairAlignments, unpairAlignments, packAlignmentRows}","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\nimport PairedAlignment from \"./pairedAlignment.js\"\nimport {canBePaired, packAlignmentRows, pairAlignments, unpairAlignments} from \"./alignmentUtils.js\"\nimport {IGVMath} from \"../../node_modules/igv-utils/src/index.js\"\n\n\nclass AlignmentContainer {\n\n    //            this.config.samplingWindowSize, this.config.samplingDepth,\n    //             this.config.pairsSupported, this.config.alleleFreqThreshold)\n    constructor(chr, start, end, {samplingWindowSize, samplingDepth, pairsSupported, alleleFreqThreshold}) {\n\n        this.chr = chr\n        this.start = Math.floor(start)\n        this.end = Math.ceil(end)\n        this.length = (end - start)\n\n        this.alleleFreqThreshold = alleleFreqThreshold === undefined ? 0.2 : alleleFreqThreshold\n\n        this.coverageMap = new CoverageMap(chr, start, end, this.alleleFreqThreshold)\n        this.alignments = []\n        this.downsampledIntervals = []\n\n        this.samplingWindowSize = samplingWindowSize === undefined ? 100 : samplingWindowSize\n        this.samplingDepth = samplingDepth === undefined ? 1000 : samplingDepth\n\n        this.pairsSupported = pairsSupported === undefined ? true : pairsSupported\n        this.paired = false  // false until proven otherwise\n        this.pairsCache = {}  // working cache of paired alignments by read name\n\n        this.downsampledReads = new Set()\n\n        this.currentBucket = new DownsampleBucket(this.start, this.start + this.samplingWindowSize, this)\n\n        this.filter = function filter(alignment) {         // TODO -- pass this in\n            return alignment.isMapped() && !alignment.isFailsVendorQualityCheck()\n        }\n\n    }\n\n    push(alignment) {\n\n        if (this.filter(alignment) === false) return\n\n        this.coverageMap.incCounts(alignment)   // Count coverage before any downsampling\n\n        if (this.pairsSupported && this.downsampledReads.has(alignment.readName)) {\n            return   // Mate already downsampled -- pairs are treated as a single alignment for downsampling\n        }\n\n        if (alignment.start >= this.currentBucket.end) {\n            this.finishBucket()\n            this.currentBucket = new DownsampleBucket(alignment.start, alignment.start + this.samplingWindowSize, this)\n        }\n\n        this.currentBucket.addAlignment(alignment)\n\n    }\n\n    forEach(callback) {\n        this.alignments.forEach(callback)\n    }\n\n    finish() {\n\n        if (this.currentBucket !== undefined) {\n            this.finishBucket()\n        }\n\n        this.alignments.sort(function (a, b) {\n            return a.start - b.start\n        })\n\n        this.pairsCache = undefined\n        this.downsampledReads = undefined\n    }\n\n    contains(chr, start, end) {\n        return this.chr === chr &&\n            this.start <= start &&\n            this.end >= end\n    }\n\n    hasDownsampledIntervals() {\n        return this.downsampledIntervals && this.downsampledIntervals.length > 0\n    }\n\n    finishBucket() {\n        this.alignments = this.alignments.concat(this.currentBucket.alignments)\n        if (this.currentBucket.downsampledCount > 0) {\n            this.downsampledIntervals.push(new DownsampledInterval(\n                this.currentBucket.start,\n                this.currentBucket.end,\n                this.currentBucket.downsampledCount))\n        }\n        this.paired = this.paired || this.currentBucket.paired\n    }\n\n    setViewAsPairs(bool) {\n        let alignments\n        if (bool) {\n            alignments = pairAlignments(this.packedAlignmentRows)\n        } else {\n            alignments = unpairAlignments(this.packedAlignmentRows)\n        }\n        this.packedAlignmentRows = packAlignmentRows(alignments, this.start, this.end)\n    }\n\n    setShowSoftClips(bool) {\n        const alignments = this.allAlignments()\n        this.packedAlignmentRows = packAlignmentRows(alignments, this.start, this.end, bool)\n    }\n\n    repack(bpPerPixel, showSoftClips) {\n        const alignments = this.allAlignments()\n        this.packedAlignmentRows = packAlignmentRows(alignments, this.start, this.end, showSoftClips, bpPerPixel)\n\n    }\n\n    allAlignments() {\n        const alignments = []\n        for (let row of this.packedAlignmentRows) {\n            for (let alignment of row.alignments) {\n                alignments.push(alignment)\n            }\n        }\n        return alignments\n    }\n\n    getMax(start, end) {\n        return this.coverageMap.getMax(start, end)\n    }\n\n    sortRows(options) {\n\n        const newRows = []\n        const undefinedRow = []\n        for (let row of this.packedAlignmentRows) {\n            const alignment = row.findAlignment(options.position)\n            if (undefined !== alignment) {\n                newRows.push(row)\n            } else {\n                undefinedRow.push(row)\n            }\n        }\n\n        newRows.sort((rowA, rowB) => {\n            const direction = options.direction\n            const rowAValue = rowA.getSortValue(options, this)\n            const rowBValue = rowB.getSortValue(options, this)\n\n            if (rowBValue === undefined && rowBValue !== undefined) return 1\n            else if (rowAValue !== undefined && rowBValue === undefined) return -1\n\n            const i = rowAValue > rowBValue ? 1 : (rowAValue < rowBValue ? -1 : 0)\n            return true === direction ? i : -i\n        })\n\n        for (let row of undefinedRow) {\n            newRows.push(row)\n        }\n\n        this.packedAlignmentRows = newRows\n    }\n\n}\n\n\nclass DownsampleBucket {\n\n    constructor(start, end, alignmentContainer) {\n\n        this.start = start\n        this.end = end\n        this.alignments = []\n        this.downsampledCount = 0\n        this.samplingDepth = alignmentContainer.samplingDepth\n        this.pairsSupported = alignmentContainer.pairsSupported\n        this.downsampledReads = alignmentContainer.downsampledReads\n        this.pairsCache = alignmentContainer.pairsCache\n    }\n\n    addAlignment(alignment) {\n\n        var idx, replacedAlignment, pairedAlignment\n\n        if (this.pairsSupported && canBePaired(alignment)) {\n            pairedAlignment = this.pairsCache[alignment.readName]\n            if (pairedAlignment) {\n                // Not subject to downsampling, just update the existing alignment\n                pairedAlignment.setSecondAlignment(alignment)\n                this.pairsCache[alignment.readName] = undefined   // Don't need to track this anymore. NOTE: Don't \"delete\", causes runtime performance issues\n                return\n            }\n        }\n\n        if (this.alignments.length < this.samplingDepth) {\n\n            if (this.pairsSupported && canBePaired(alignment)) {\n\n                // First alignment in a pair\n                pairedAlignment = new PairedAlignment(alignment)\n                this.paired = true\n                this.pairsCache[alignment.readName] = pairedAlignment\n                this.alignments.push(pairedAlignment)\n\n            } else {\n                this.alignments.push(alignment)\n            }\n\n        } else {\n\n            idx = Math.floor(Math.random() * (this.samplingDepth + this.downsampledCount - 1))\n\n            if (idx < this.samplingDepth) {\n\n                // Keep the new item\n                //  idx = Math.floor(Math.random() * (this.alignments.length - 1));\n                replacedAlignment = this.alignments[idx]   // To be replaced\n\n                if (this.pairsSupported && canBePaired(alignment)) {\n\n                    if (this.pairsCache[replacedAlignment.readName] !== undefined) {\n                        this.pairsCache[replacedAlignment.readName] = undefined\n                    }\n\n                    pairedAlignment = new PairedAlignment(alignment)\n                    this.paired = true\n                    this.pairsCache[alignment.readName] = pairedAlignment\n                    this.alignments[idx] = pairedAlignment\n\n                } else {\n                    this.alignments[idx] = alignment\n                }\n                this.downsampledReads.add(replacedAlignment.readName)\n\n            } else {\n                this.downsampledReads.add(alignment.readName)\n            }\n\n            this.downsampledCount++\n        }\n\n\n    }\n}\n\nclass CoverageMap {\n\n    constructor(chr, start, end, alleleFreqThreshold) {\n\n        this.chr = chr\n        this.bpStart = start\n        this.length = (end - start)\n\n        this.coverage = new Array(this.length)\n        this.maximum = 0\n\n        this.threshold = alleleFreqThreshold\n        this.qualityWeight = true\n    }\n\n    /**\n     * Return the maximum coverage value between start and end.  This is used for autoscaling.\n     * @param start\n     * @param end\n     */\n    getMax(start, end) {\n        let max = 0\n        const len = this.coverage.length\n        for (let i = 0; i < len; i++) {\n            const pos = this.bpStart + i\n            if (pos > end) break\n            const cov = this.coverage[i]\n            if (pos >= start && cov) {\n                max = Math.max(max, cov.total)\n            }\n        }\n        return max\n    }\n\n    incCounts(alignment) {\n\n        var self = this\n\n        if (alignment.blocks === undefined) {\n            incBlockCount(alignment)\n        } else {\n            alignment.blocks.forEach(function (block) {\n                incBlockCount(block)\n            })\n        }\n\n        if (alignment.gaps) {\n            for (let del of alignment.gaps) {\n                if (del.type === 'D') {\n                    const offset = del.start - self.bpStart\n                    for (let i = offset; i < offset + del.len; i++) {\n                        if (i < 0) continue\n                        if (!this.coverage[i]) {\n                            this.coverage[i] = new Coverage(self.threshold)\n                        }\n                        this.coverage[i].del++\n                    }\n                }\n            }\n        }\n\n        if (alignment.insertions) {\n            for (let del of alignment.insertions) {\n                const i = del.start - this.bpStart\n                if (i < 0) continue\n                if (!this.coverage[i]) {\n                    this.coverage[i] = new Coverage(self.threshold)\n                }\n                this.coverage[i].ins++\n            }\n        }\n\n        function incBlockCount(block) {\n\n            if ('S' === block.type) return\n\n            const seq = alignment.seq\n            const qual = alignment.qual\n            const seqOffset = block.seqOffset\n\n            for (let i = block.start - self.bpStart, j = 0; j < block.len; i++, j++) {\n\n                if (!self.coverage[i]) {\n                    self.coverage[i] = new Coverage(self.threshold)\n                }\n\n                const base = (seq == undefined) ? \"N\" : seq.charAt(seqOffset + j)\n                const key = (alignment.strand) ? \"pos\" + base : \"neg\" + base\n                const q = qual && seqOffset + j < qual.length ? qual[seqOffset + j] : 30\n\n                self.coverage[i][key] += 1\n                self.coverage[i][\"qual\" + base] += q\n\n                self.coverage[i].total += 1\n                self.coverage[i].qual += q\n\n                self.maximum = Math.max(self.coverage[i].total, self.maximum)\n\n            }\n        }\n    }\n}\n\n\nclass Coverage {\n\n    constructor(alleleThreshold) {\n\n        this.qualityWeight = true\n\n        this.posA = 0\n        this.negA = 0\n\n        this.posT = 0\n        this.negT = 0\n\n        this.posC = 0\n        this.negC = 0\n        this.posG = 0\n\n        this.negG = 0\n\n        this.posN = 0\n        this.negN = 0\n\n        this.pos = 0\n        this.neg = 0\n\n        this.qualA = 0\n        this.qualT = 0\n        this.qualC = 0\n        this.qualG = 0\n        this.qualN = 0\n\n        this.qual = 0\n\n        this.total = 0\n        this.del = 0\n        this.ins = 0\n\n        this.threshold = alleleThreshold\n    }\n\n    hoverText() {\n        const pos = this.posA + this.posT + this.posC + this.posG + this.posN\n        const neg = this.negA + this.negT + this.negC + this.negG + this.negN\n        return `${this.total} (${pos}+, ${neg}-)`\n    }\n\n    isMismatch(refBase) {\n        const threshold = this.threshold * ((this.qualityWeight && this.qual) ? this.qual : this.total)\n        let mismatchQualitySum = 0\n        for (let base of [\"A\", \"T\", \"C\", \"G\"]) {\n            if (base !== refBase) {\n                mismatchQualitySum += ((this.qualityWeight && this.qual) ? this[\"qual\" + base] : (this[\"pos\" + base] + this[\"neg\" + base]))\n            }\n        }\n        return mismatchQualitySum >= threshold\n    }\n}\n\nclass DownsampledInterval {\n\n    constructor(start, end, counts) {\n        this.start = start\n        this.end = end\n        this.counts = counts\n    }\n\n    popupData(genomicLocation) {\n        return [\n            {name: \"start\", value: this.start + 1},\n            {name: \"end\", value: this.end},\n            {name: \"# downsampled:\", value: this.counts}]\n    }\n}\n\nexport default AlignmentContainer\n","import {numberFormatter} from \"../../node_modules/igv-utils/src/stringUtils.js\"\nimport BamUtils from \"./bamUtils.js\"\n\nclass SupplementaryAlignment {\n\n    constructor(rec) {\n        const tokens = rec.split(',')\n        this.chr = tokens[0]\n        this.start = parseInt(tokens[1])\n        this.strand = tokens[2].charAt(0)\n        this.mapQ = parseInt(tokens[4])\n        this.numMismatches = parseInt(tokens[5])\n        this.lenOnRef = BamUtils.computeLengthOnReference(tokens[3])\n    }\n\n    printString() {\n        return this.chr + \":\" + numberFormatter(this.start) + \"-\" + numberFormatter(this.start + this.lenOnRef)\n            + \" (\" + this.strand + \") = \" + numberFormatter(this.lenOnRef) + \"bp @MAPQ: \" + this.mapQ + \" NM: \" + this.numMismatches\n    }\n}\n\nfunction createSupplementaryAlignments(str) {\n    const tokens = str.split(';')\n    return tokens.filter(t => t.length > 0).map(str => new SupplementaryAlignment(str))\n}\n\n\nexport {createSupplementaryAlignments}","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\nimport {StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport {createSupplementaryAlignments} from \"./supplementaryAlignment.js\"\n\nconst READ_PAIRED_FLAG = 0x1\nconst PROPER_PAIR_FLAG = 0x2\nconst READ_UNMAPPED_FLAG = 0x4\nconst MATE_UNMAPPED_FLAG = 0x8\nconst READ_STRAND_FLAG = 0x10\nconst MATE_STRAND_FLAG = 0x20\nconst FIRST_OF_PAIR_FLAG = 0x40\nconst SECOND_OF_PAIR_FLAG = 0x80\nconst SECONDARY_ALIGNMNET_FLAG = 0x100\nconst READ_FAILS_VENDOR_QUALITY_CHECK_FLAG = 0x200\nconst DUPLICATE_READ_FLAG = 0x400\nconst SUPPLEMENTARY_ALIGNMENT_FLAG = 0x800\nconst ELEMENT_SIZE = {\n    c: 1,\n    C: 1,\n    s: 2,\n    S: 2,\n    i: 4,\n    I: 4,\n    f: 4\n}\n\nconst MAX_CIGAR = 50\n\n/**\n * readName\n * chr\n * cigar\n * lengthOnRef\n * start\n * seq\n * qual\n * mq\n * strand\n * blocks\n */\n\nclass BamAlignment {\n\n    constructor() {\n        this.hidden = false\n    }\n\n    isMapped() {\n        return (this.flags & READ_UNMAPPED_FLAG) === 0\n    }\n\n    isPaired() {\n        return (this.flags & READ_PAIRED_FLAG) !== 0\n    }\n\n    isProperPair() {\n        return (this.flags & PROPER_PAIR_FLAG) !== 0\n    }\n\n    isFirstOfPair() {\n        return (this.flags & FIRST_OF_PAIR_FLAG) !== 0\n    }\n\n    isSecondOfPair() {\n        return (this.flags & SECOND_OF_PAIR_FLAG) !== 0\n    }\n\n    isSecondary() {\n        return (this.flags & SECONDARY_ALIGNMNET_FLAG) !== 0\n    }\n\n    isSupplementary() {\n        return (this.flags & SUPPLEMENTARY_ALIGNMENT_FLAG) !== 0\n    }\n\n    isFailsVendorQualityCheck() {\n        return (this.flags & READ_FAILS_VENDOR_QUALITY_CHECK_FLAG) !== 0\n    }\n\n    isDuplicate() {\n        return (this.flags & DUPLICATE_READ_FLAG) !== 0\n    }\n\n    isMateMapped() {\n        return (this.flags & MATE_UNMAPPED_FLAG) === 0\n    }\n\n    isNegativeStrand() {\n        return (this.flags & READ_STRAND_FLAG) !== 0\n    }\n\n    isMateNegativeStrand() {\n        return (this.flags & MATE_STRAND_FLAG) !== 0\n    }\n\n    hasTag(tag) {\n        const tmpTags = this.tagDict || decodeTags(this.tagBA)\n        return tmpTags.hasOwnProperty(tag)\n    }\n\n    tags() {\n        if (!this.tagDict) {\n            if (this.tagBA) {\n                this.tagDict = decodeTags(this.tagBA)\n                this.tagBA = undefined\n            } else {\n                this.tagDict = {}  // Mark so we don't try again.  The record has no tags\n            }\n        }\n        return this.tagDict\n    }\n\n    /**\n     * Does alignment (or alignment extended by soft clips) contain the genomic location?\n     *\n     * @param genomicLocation\n     * @param showSoftClips\n     * @returns {boolean|boolean}\n     */\n    containsLocation(genomicLocation, showSoftClips) {\n        const s = showSoftClips ? this.scStart : this.start\n        const l = showSoftClips ? this.scLengthOnRef : this.lengthOnRef\n        return (genomicLocation >= s && genomicLocation <= (s + l))\n    }\n\n    popupData(genomicLocation) {\n\n        // if the user clicks on a base next to an insertion, show just the\n        // inserted bases in a popup (like in desktop IGV).\n        const nameValues = []\n\n        // Consert genomic location to int\n        genomicLocation = Math.floor(genomicLocation)\n\n        if (this.insertions) {\n\n            const seq = this.seq\n\n            for (let insertion of this.insertions) {\n                var ins_start = insertion.start\n                if (genomicLocation === ins_start || genomicLocation === ins_start - 1) {\n                    nameValues.push({name: 'Insertion', value: seq.substr(insertion.seqOffset, insertion.len)})\n                    nameValues.push({name: 'Location', value: ins_start})\n                    return nameValues\n                }\n            }\n        }\n\n        nameValues.push({name: 'Read Name', value: this.readName})\n\n        // Sample\n        // Read group\n        nameValues.push('<hr/>')\n\n        // Add 1 to genomic location to map from 0-based computer units to user-based units\n        nameValues.push({name: 'Alignment Start', value: StringUtils.numberFormatter(1 + this.start), borderTop: true})\n        nameValues.push({name: 'Read Strand', value: (true === this.strand ? '(+)' : '(-)'), borderTop: true})\n\n        // Abbreviate long cigar strings, keeping the beginning and end to show cliping\n        let cigar = this.cigar\n        if (cigar && cigar.length > MAX_CIGAR) {\n            const half = MAX_CIGAR / 2\n            cigar = `${cigar.substring(0, half - 2)} ... ${cigar.substring(cigar.length - half + 2)}`\n        }\n        nameValues.push({name: 'Cigar', value: cigar})\n\n        nameValues.push({name: 'Mapping Quality', value: this.mq})\n        nameValues.push({name: 'Secondary', value: yesNo(this.isSecondary())})\n        nameValues.push({name: 'Supplementary', value: yesNo(this.isSupplementary())})\n        nameValues.push({name: 'Duplicate', value: yesNo(this.isDuplicate())})\n        nameValues.push({name: 'Failed QC', value: yesNo(this.isFailsVendorQualityCheck())})\n\n        if (this.isPaired()) {\n            nameValues.push('<hr/>')\n            nameValues.push({name: 'First in Pair', value: !this.isSecondOfPair(), borderTop: true})\n            nameValues.push({name: 'Mate is Mapped', value: yesNo(this.isMateMapped())})\n            if (this.pairOrientation) {\n                nameValues.push({name: 'Pair Orientation', value: this.pairOrientation})\n            }\n            if (this.isMateMapped()) {\n                nameValues.push({name: 'Mate Chromosome', value: this.mate.chr})\n                nameValues.push({name: 'Mate Start', value: (this.mate.position + 1)})\n                nameValues.push({name: 'Mate Strand', value: (true === this.mate.strand ? '(+)' : '(-)')})\n                nameValues.push({name: 'Insert Size', value: this.fragmentLength})\n                // Mate Start\n                // Mate Strand\n                // Insert Size\n            }\n            // First in Pair\n            // Pair Orientation\n\n        }\n\n        const tagDict = this.tags()\n\n        if (tagDict.hasOwnProperty('SA')) {\n            nameValues.push('<hr/>')\n            nameValues.push({name: 'Supplementary Alignments', value: ''})\n            const sa = createSupplementaryAlignments(tagDict['SA'])\n            if (sa) {\n                nameValues.push('<ul>')\n                for (let s of sa) {\n                    nameValues.push(`<li>${s.printString()}</li>`)\n                }\n                nameValues.push('</ul>')\n            }\n        }\n\n        const hiddenTags = new Set(['SA', 'MD'])\n        nameValues.push('<hr/>')\n        for (let key in tagDict) {\n            if (!hiddenTags.has(key)) {\n                nameValues.push({name: key, value: tagDict[key]})\n            }\n        }\n\n        nameValues.push({name: 'Hidden Tags', value: 'SA, MD'})\n\n        nameValues.push('<hr/>')\n        nameValues.push({name: 'Genomic Location: ', value: StringUtils.numberFormatter(1 + genomicLocation)})\n        nameValues.push({name: 'Read Base:', value: this.readBaseAt(genomicLocation)})\n        nameValues.push({name: 'Base Quality:', value: this.readBaseQualityAt(genomicLocation)})\n\n        return nameValues\n\n\n        function yesNo(bool) {\n            return bool ? 'Yes' : 'No'\n        }\n    }\n\n    readBaseAt(genomicLocation) {\n\n        const block = blockAtGenomicLocation(this.blocks, genomicLocation)\n        if (block) {\n            if (\"*\" === this.seq) {\n                return \"*\"\n            } else {\n                const idx = block.seqIndexAt(genomicLocation)\n                // if (idx >= 0 && idx < this.seq.length) {\n                return this.seq[idx]\n                //  }\n            }\n        } else {\n            return undefined\n        }\n    }\n\n    readBaseQualityAt(genomicLocation) {\n\n        const block = blockAtGenomicLocation(this.blocks, genomicLocation)\n        if (block) {\n            if (\"*\" === this.qual) {\n                return 30\n            } else {\n                const idx = block.seqIndexAt(genomicLocation)\n                if (idx >= 0 && this.qual && idx < this.qual.length) {\n                    return this.qual[idx]\n                } else {\n                    return 30\n                }\n            }\n        } else {\n            return undefined\n        }\n    }\n\n    gapSizeAt(genomicLocation) {\n        if (this.gaps) {\n            for (let gap of this.gaps) {\n                if (genomicLocation >= gap.start && genomicLocation < gap.start + gap.len) {\n                    return gap.len\n                }\n            }\n        }\n        return 0\n    }\n\n    /**\n     * Return soft clipped blocks, if they exist, keyed by alignment end (left or right)\n     */\n    softClippedBlocks() {\n        let left\n        let right\n        let interiorSeen\n        for(let b of this.blocks) {\n            if('S' === b.type) {\n                if(interiorSeen) {\n                    right = b\n                } else {\n                    left = b\n                }\n            } else if('H' !== b.type) {\n                interiorSeen = true\n            }\n        }\n        return {left, right}\n    }\n\n}\n\nfunction blockAtGenomicLocation(blocks, genomicLocation) {\n\n    for (let i = 0; i < blocks.length; i++) {\n        const block = blocks[i]\n        if (genomicLocation >= block.start && genomicLocation < block.start + block.len) {\n            return block\n        }\n    }\n    return undefined\n}\n\nfunction decodeTags(ba) {\n\n    let p = 0\n    const len = ba.length\n    const tags = {}\n\n    while (p < len) {\n        const tag = String.fromCharCode(ba[p]) + String.fromCharCode(ba[p + 1])\n        p += 2\n\n        const type = String.fromCharCode(ba[p++])\n        let value\n        if (type === 'A') {\n            value = String.fromCharCode(ba[p])\n            p++\n        } else if (type === 'i' || type === 'I') {\n            value = readInt(ba, p)\n            p += 4\n        } else if (type === 'c') {\n            value = readInt8(ba, p)\n            p++\n        } else if (type === 'C') {\n            value = readUInt8(ba, p)\n            p++\n        } else if (type === 's' || type === 'S') {\n            value = readShort(ba, p)\n            p += 2\n        } else if (type === 'f') {\n            value = readFloat(ba, p)\n            p += 4\n        } else if (type === 'Z') {\n            value = ''\n            for (; ;) {\n                var cc = ba[p++]\n                if (cc === 0) {\n                    break\n                } else {\n                    value += String.fromCharCode(cc)\n                }\n            }\n        } else if (type === 'B') {\n            const elementType = String.fromCharCode(ba[p++])\n            let elementSize = ELEMENT_SIZE[elementType]\n            if (elementSize === undefined) {\n                tags[tag] = `Error: unknown element type '${elementType}'`\n                break\n            }\n            const numElements = readInt(ba, p)\n            p += (4 + numElements * elementSize)\n            value = '[not shown]'\n        } else {\n            //'Unknown type ' + type;\n            value = 'Error unknown type: ' + type\n            tags[tag] = value\n            break\n        }\n        tags[tag] = value\n    }\n    return tags\n}\n\n\nfunction readInt(ba, offset) {\n    return (ba[offset + 3] << 24) | (ba[offset + 2] << 16) | (ba[offset + 1] << 8) | (ba[offset])\n}\n\nfunction readShort(ba, offset) {\n    return (ba[offset + 1] << 8) | (ba[offset])\n}\n\nfunction readFloat(ba, offset) {\n    const dataView = new DataView(ba.buffer)\n    return dataView.getFloat32(offset)\n}\n\nfunction readInt8(ba, offset) {\n    const dataView = new DataView(ba.buffer)\n    return dataView.getInt8(offset)\n}\n\nfunction readUInt8(ba, offset) {\n    const dataView = new DataView(ba.buffer)\n    return dataView.getUint8(offset)\n}\n\n\nexport default BamAlignment\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n/**\n * Created by jrobinso on 4/5/18.\n */\n\n\nclass AlignmentBlock {\n    constructor(b) {\n        if (b) {\n            Object.assign(this, b)\n        }\n    }\n\n    seqIndexAt(genomicLocation) {\n        return Math.floor(genomicLocation) - this.start + this.seqOffset\n    }\n}\n\nexport default AlignmentBlock\n","class BamFilter {\n    constructor(options) {\n        if (!options) options = {}\n        this.vendorFailed = options.vendorFailed === undefined ? true : options.vendorFailed\n        this.duplicates = options.duplicates === undefined ? true : options.duplicates\n        this.secondary = options.secondary || false\n        this.supplementary = options.supplementary || false\n        this.mqThreshold = options.mqThreshold === undefined ? 0 : options.mqThreshold\n        if (options.readgroups) {\n            this.readgroups = new Set(options.readgroups)\n        }\n    }\n\n    pass(alignment) {\n        if (this.vendorFailed && alignment.isFailsVendorQualityCheck()) return false\n        if (this.duplicates && alignment.isDuplicate()) return false\n        if (this.secondary && alignment.isSecondary()) return false\n        if (this.supplementary && alignment.isSupplementary()) return false\n        if (alignment.mq < this.mqThreshold) return false\n        if (this.readgroups) {\n            var rg = alignment.tags()['RG']\n            return this.readgroups.has(rg)\n        }\n        return true\n    }\n}\n\nexport default BamFilter\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport BamAlignment from \"./bamAlignment.js\"\nimport AlignmentBlock from \"./alignmentBlock.js\"\nimport {BGZip, igvxhr, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport BamFilter from \"./bamFilter.js\"\n\n\n/**\n * This code is based on the Biodalliance BAM reader by Thomas Down,  2011\n *\n * https://github.com/dasmoth/dalliance/blob/master/js/bam.js\n */\n\nconst SEQ_DECODER = ['=', 'A', 'C', 'x', 'G', 'x', 'x', 'x', 'T', 'x', 'x', 'x', 'x', 'x', 'x', 'N']\nconst CIGAR_DECODER = ['M', 'I', 'D', 'N', 'S', 'H', 'P', '=', 'X', '?', '?', '?', '?', '?', '?', '?']\nconst READ_STRAND_FLAG = 0x10\nconst MATE_STRAND_FLAG = 0x20\n\nconst BAM1_MAGIC_BYTES = new Uint8Array([0x42, 0x41, 0x4d, 0x01]) // BAM\\1\nconst BAM1_MAGIC_NUMBER = readInt(BAM1_MAGIC_BYTES, 0)\n\nconst DEFAULT_ALLELE_FREQ_THRESHOLD = 0.2\nconst DEFAULT_SAMPLING_WINDOW_SIZE = 100\nconst DEFAULT_SAMPLING_DEPTH = 500\nconst MAXIMUM_SAMPLING_DEPTH = 10000\n\nconst BamUtils = {\n\n    readHeader: function (url, options, genome) {\n\n        return igvxhr.loadArrayBuffer(url, options)\n\n            .then(function (compressedBuffer) {\n\n                var header, unc, uncba\n\n                unc = BGZip.unbgzf(compressedBuffer)\n                uncba = unc\n\n                header = BamUtils.decodeBamHeader(uncba, genome)\n\n                return header\n\n            })\n\n    },\n\n    /**\n     *\n     * @param ba  bytes to decode as a UInt8Array\n     * @param genome  optional igv genome object\n     * @returns {{ magicNumer: number, size: number, chrNames: Array, chrToIndex: ({}|*), chrAliasTable: ({}|*) }}\n     */\n    decodeBamHeader: function (ba, genome) {\n\n        var magic, samHeaderLen, samHeader, chrToIndex, chrNames, chrAliasTable, alias\n\n        magic = readInt(ba, 0)\n        if (magic !== BAM1_MAGIC_NUMBER) {\n            throw new Error('BAM header errror: bad magic number.  This could be caused by either a corrupt or missing file.')\n        }\n\n        samHeaderLen = readInt(ba, 4)\n        samHeader = ''\n\n        for (var i = 0; i < samHeaderLen; ++i) {\n            samHeader += String.fromCharCode(ba[i + 8])\n        }\n\n        var nRef = readInt(ba, samHeaderLen + 8)\n        var p = samHeaderLen + 12\n\n        chrToIndex = {}\n        chrNames = []\n        chrAliasTable = {}\n\n        for (i = 0; i < nRef; ++i) {\n            var lName = readInt(ba, p)\n            var name = ''\n            for (var j = 0; j < lName - 1; ++j) {\n                name += String.fromCharCode(ba[p + 4 + j])\n            }\n            var lRef = readInt(ba, p + lName + 4)\n            //dlog(name + ': ' + lRef);\n\n            chrToIndex[name] = i\n            chrNames[i] = name\n\n            if (genome) {\n                alias = genome.getChromosomeName(name)\n                chrAliasTable[alias] = name\n            }\n\n            p = p + 8 + lName\n        }\n\n        return {\n            magicNumber: magic,\n            size: p,\n            chrNames: chrNames,\n            chrToIndex: chrToIndex,\n            chrAliasTable: chrAliasTable\n        }\n\n    },\n\n    bam_tag2cigar: function (ba, block_end, seq_offset, lseq, al, cigarArray) {\n\n        function type2size(x) {\n            if (x === 'C' || x === 'c' || x === 'A') return 1\n            else if (x === 'S' || x === 's') return 2\n            else if (x === 'I' || x === 'i' || x === 'f') return 4\n            else return 0\n        }\n\n        // test if the real CIGAR is encoded in a CG:B,I tag\n        if (cigarArray.length !== 1 || al.start < 0) return false\n        var p = seq_offset + ((lseq + 1) >> 1) + lseq\n        while (p + 4 < block_end) {\n            var tag = String.fromCharCode(ba[p]) + String.fromCharCode(ba[p + 1])\n            if (tag === 'CG') break\n            var type = String.fromCharCode(ba[p + 2])\n            if (type === 'B') { // the binary array type\n                type = String.fromCharCode(ba[p + 3])\n                var size = type2size(type)\n                var len = readInt(ba, p + 4)\n                p += 8 + size * len\n            } else if (type === 'Z' || type === 'H') { // 0-terminated string\n                p += 3\n                while (ba[p++] !== 0) {\n                }\n            } else { // other atomic types\n                p += 3 + type2size(type)\n            }\n        }\n        if (p >= block_end) return false // no CG tag\n        if (String.fromCharCode(ba[p + 2]) !== 'B' || String.fromCharCode(ba[p + 3]) !== 'I') return false // not of type B,I\n\n        // now we know the real CIGAR length and its offset in the binary array\n        var cigar_len = readInt(ba, p + 4)\n        var cigar_offset = p + 8 // 4 for \"CGBI\" and 4 for length\n        if (cigar_offset + cigar_len * 4 > block_end) return false // out of bound\n\n        // decode CIGAR\n        var cigar = ''\n        var lengthOnRef = 0\n        cigarArray.length = 0 // empty the old array\n        p = cigar_offset\n        for (var k = 0; k < cigar_len; ++k, p += 4) {\n            var cigop = readInt(ba, p)\n            var opLen = (cigop >> 4)\n            var opLtr = CIGAR_DECODER[cigop & 0xf]\n            if (opLtr === 'M' || opLtr === 'EQ' || opLtr === 'X' || opLtr === 'D' || opLtr === 'N' || opLtr === '=')\n                lengthOnRef += opLen\n            cigar = cigar + opLen + opLtr\n            cigarArray.push({len: opLen, ltr: opLtr})\n        }\n\n        // update alignment record. We are not updating bin, as apparently it is not used.\n        al.cigar = cigar\n        al.lengthOnRef = lengthOnRef\n        return true\n    },\n\n    /**\n     *\n     * @param ba                 bytes to decode as an UInt8Array\n     * @param offset             offset position of ba array to start decoding\n     * @param alignmentContainer container to receive the decoded alignments\n     * @param min                minimum genomic position\n     * @param max                maximum genomic position\n     * @param chrIdx             chromosome index\n     * @param chrNames            array of chromosome names\n     * @param filter             a BamFilter object\n     *\n     * @return true if we have moved beyond the right end of the genomic range.\n     */\n    decodeBamRecords: function (ba, offset, alignmentContainer, chrNames, chrIdx, min, max, filter) {\n\n        while (offset < ba.length) {\n\n            const blockSize = readInt(ba, offset)\n            const blockEnd = offset + blockSize + 4\n            const alignment = new BamAlignment()\n            const refID = readInt(ba, offset + 4)\n            const pos = readInt(ba, offset + 8)\n\n            if (blockEnd > ba.length) {\n                return\n            }\n            if (refID < 0) {\n                offset = blockEnd\n                continue   // unmapped read\n            } else if (chrIdx !== undefined && (refID > chrIdx || pos > max)) {\n                return true    // off right edge, we're done\n            } else if (chrIdx !== undefined && (refID < chrIdx)) {\n                offset = blockEnd\n                continue   // ref ID to left of start, not sure this is possible\n            }\n\n            const bin_mq_nl = readInt(ba, offset + 12)\n            const bin = (bin_mq_nl & 0xffff0000) >> 16\n            const mq = (bin_mq_nl & 0xff00) >> 8\n            const nl = bin_mq_nl & 0xff\n\n            const flag_nc = readInt(ba, offset + 16)\n            const flag = (flag_nc & 0xffff0000) >> 16\n            const nc = flag_nc & 0xffff\n\n            const lseq = readInt(ba, offset + 20)\n            const mateChrIdx = readInt(ba, offset + 24)\n            const matePos = readInt(ba, offset + 28)\n            const fragmentLength = readInt(ba, offset + 32)\n\n            let readName = []\n            for (let j = 0; j < nl - 1; ++j) {\n                readName.push(String.fromCharCode(ba[offset + 36 + j]))\n            }\n            readName = readName.join('')\n\n            let lengthOnRef = 0\n            let cigar = ''\n            let p = offset + 36 + nl\n            const cigarArray = []\n            // concatenate M,=,EQ,and X\n\n            let lastCigRecord\n            let mOperators = new Set(['M', 'EQ', 'X', '='])\n            for (let c = 0; c < nc; ++c) {\n                var cigop = readInt(ba, p)\n                var opLen = (cigop >> 4)\n                var opLtr = CIGAR_DECODER[cigop & 0xf]\n                if (opLtr === 'M' || opLtr === 'EQ' || opLtr === 'X' || opLtr === 'D' || opLtr === 'N' || opLtr === '=')\n                    lengthOnRef += opLen\n                cigar = cigar + opLen + opLtr\n                p += 4\n\n                // if(mOperators.has(opLtr) && mOperators.has(lastCigRecord.ltr)) {\n                //     lastCigRecord.len += opLen;\n                //     lastCigRecord.ltr = 'M'\n                // }\n                // else {\n                lastCigRecord = {len: opLen, ltr: opLtr}\n                cigarArray.push(lastCigRecord)\n                //}\n            }\n\n            alignment.chr = chrNames[refID]\n            alignment.start = pos\n            alignment.flags = flag\n            alignment.strand = !(flag & READ_STRAND_FLAG)\n            alignment.readName = readName\n            alignment.cigar = cigar\n            alignment.lengthOnRef = lengthOnRef\n            alignment.fragmentLength = fragmentLength\n            alignment.mq = mq\n\n            BamUtils.bam_tag2cigar(ba, blockEnd, p, lseq, alignment, cigarArray)\n\n            alignment.end = alignment.start + alignment.lengthOnRef\n\n            if (alignment.end < min) {\n                offset = blockEnd\n                continue\n            }  // Record out-of-range \"to the left\", skip to next one\n\n\n            let seq = []\n            const seqBytes = (lseq + 1) >> 1\n            for (let j = 0; j < seqBytes; ++j) {\n                var sb = ba[p + j]\n                seq.push(SEQ_DECODER[(sb & 0xf0) >> 4])\n                seq.push(SEQ_DECODER[(sb & 0x0f)])\n            }\n            seq = seq.slice(0, lseq).join('')  // seq might have one extra character (if lseq is an odd number)\n            p += seqBytes\n\n\n            const qualArray = []\n            for (let j = 0; j < lseq; ++j) {\n                qualArray.push(ba[p + j])\n            }\n            p += lseq\n\n            if (mateChrIdx >= 0) {\n                alignment.mate = {\n                    chr: chrNames[mateChrIdx],\n                    position: matePos,\n                    strand: !(flag & MATE_STRAND_FLAG)\n                }\n            }\n\n            alignment.seq = seq\n            alignment.qual = qualArray\n            alignment.tagBA = new Uint8Array(ba.buffer.slice(p, blockEnd))  // decode these on demand\n\n            this.setPairOrientation(alignment)\n\n            if ((undefined === filter || filter.pass(alignment))) {\n                makeBlocks(alignment, cigarArray)\n                alignmentContainer.push(alignment)\n            }\n            offset = blockEnd\n        }\n    },\n\n    decodeSamRecords: function (sam, alignmentContainer, chr, min, max, filter) {\n\n        var lines, i, j, len, tokens, blocks, pos, qualString, rnext, pnext, lengthOnRef,\n            alignment, cigarArray, started\n\n        lines = StringUtils.splitLines(sam)\n        len = lines.length\n        started = false\n\n        for (i = 0; i < len; i++) {\n\n            tokens = lines[i].split('\\t')\n\n            alignment = new BamAlignment()\n\n            alignment.chr = tokens[2]\n            alignment.start = Number.parseInt(tokens[3]) - 1\n            alignment.flags = Number.parseInt(tokens[1])\n            alignment.readName = tokens[0]\n            alignment.strand = !(alignment.flags & READ_STRAND_FLAG)\n            alignment.mq = Number.parseInt(tokens[4])\n            alignment.cigar = tokens[5]\n            alignment.fragmentLength = Number.parseInt(tokens[8])\n            alignment.seq = tokens[9]\n\n            if (alignment.chr === '*' || !alignment.isMapped()) continue  // Unmapped\n\n            if (alignment.chr !== chr) {\n                if (started) break // Off the right edge, we're done\n                else continue // Possibly to the left, skip but keep looping\n            } else if (alignment.start > max) {\n                break    // off right edge, we're done\n            }\n\n            lengthOnRef = 0\n            cigarArray = buildOperators(alignment.cigar)\n            cigarArray.forEach(function (op) {\n                var opLen = op.len\n                var opLtr = op.ltr\n                if (opLtr === 'M' || opLtr === 'EQ' || opLtr === 'X' || opLtr === 'D' || opLtr === 'N' || opLtr === '=')\n                    lengthOnRef += opLen\n            })\n            alignment.lengthOnRef = lengthOnRef\n            // TODO for lh3: parse the CG:B,I tag in SAM here\n\n            if (alignment.start + lengthOnRef < min) {\n                continue    // To the left, skip and continue\n            }\n\n\n            qualString = tokens[10]\n            alignment.qual = []\n            for (j = 0; j < qualString.length; j++) {\n                alignment.qual[j] = qualString.charCodeAt(j) - 33\n            }\n            alignment.tagDict = tokens.length < 11 ? {} : decodeSamTags(tokens.slice(11))\n\n            if (alignment.isMateMapped()) {\n                rnext = tokens[6]\n                alignment.mate = {\n                    chr: (rnext === '=') ? alignment.chr : rnext,\n                    position: Number.parseInt(tokens[7]),\n                    strand: !(alignment.flags & MATE_STRAND_FLAG)\n                }\n            }\n\n            this.setPairOrientation(alignment)\n\n            if (undefined === filter || filter.pass(alignment)) {\n                makeBlocks(alignment, cigarArray)\n                alignmentContainer.push(alignment)\n            }\n        }\n    },\n\n    setReaderDefaults: function (reader, config) {\n\n        reader.filter = new BamFilter(config.filter)\n\n        if (config.readgroup) {\n            reader.filter.readgroups = new Set([config.readgroup])\n        }\n\n        reader.alleleFreqThreshold = config.alleleFreqThreshold === undefined ? DEFAULT_ALLELE_FREQ_THRESHOLD : config.alleleFreqThreshold\n\n        reader.samplingWindowSize = config.samplingWindowSize === undefined ? DEFAULT_SAMPLING_WINDOW_SIZE : config.samplingWindowSize\n        reader.samplingDepth = config.samplingDepth === undefined ? DEFAULT_SAMPLING_DEPTH : config.samplingDepth\n\n        if (reader.samplingDepth > MAXIMUM_SAMPLING_DEPTH) {\n            console.log(\"Warning: attempt to set sampling depth > maximum value of \" + MAXIMUM_SAMPLING_DEPTH)\n            reader.samplingDepth = MAXIMUM_SAMPLING_DEPTH\n        }\n\n        if (config.viewAsPairs) {\n            reader.pairsSupported = true\n        } else {\n            reader.pairsSupported = config.pairsSupported === undefined ? true : config.pairsSupported\n        }\n    },\n\n    setPairOrientation: function (alignment) {\n\n        if (alignment.isMapped() && alignment.mate && alignment.isMateMapped() && alignment.mate.chr === alignment.chr) {\n            var s1 = alignment.strand ? 'F' : 'R'\n\n            var mate = alignment.mate\n            var s2 = mate.strand ? 'F' : 'R'\n            var o1 = ' '\n            var o2 = ' '\n            if (alignment.isFirstOfPair()) {\n                o1 = '1'\n                o2 = '2'\n            } else if (alignment.isSecondOfPair()) {\n                o1 = '2'\n                o2 = '1'\n            }\n\n            var tmp = []\n            var isize = alignment.fragmentLength\n            var estReadLen = alignment.end - alignment.start\n            if (isize === 0) {\n                //isize not recorded.  Need to estimate.  This calculation was validated against an Illumina\n                // -> <- library bam.\n                var estMateEnd = alignment.start < mate.position ?\n                    mate.position + estReadLen : mate.position - estReadLen\n                isize = estMateEnd - alignment.start\n            }\n\n            //if (isize > estReadLen) {\n            if (isize > 0) {\n                tmp[0] = s1\n                tmp[1] = o1\n                tmp[2] = s2\n                tmp[3] = o2\n\n            } else {\n                tmp[2] = s1\n                tmp[3] = o1\n                tmp[0] = s2\n                tmp[1] = o2\n            }\n            // }\n            alignment.pairOrientation = tmp.join('')\n        }\n    },\n\n    computeLengthOnReference: function (cigarString) {\n\n        let len = 0\n        let buf = ''\n\n        for (let i = 0; i < cigarString.length; i++) {\n            const c = cigarString.charCodeAt(i)\n            if (c > 47 && c < 58) {\n                buf += cigarString.charAt(i)\n            } else {\n                switch (c) {\n                    case 78:  // N\n                    case 68:  // D\n                    case 77:  // M\n                    case 61:  // =\n                    case 88:  // X\n                        len += parseInt(buf.toString())\n                }\n                buf = ''\n            }\n        }\n        return len\n    }\n}\n\n\n/**\n * Split the alignment record into blocks as specified in the cigarArray.  Each aligned block contains\n * its portion of the read sequence and base quality strings.  A read sequence or base quality string\n * of \"*\" indicates the value is not recorded.  In all other cases the length of the block sequence (block.seq)\n * and quality string (block.qual) must == the block length.\n *\n * @param alignment\n * @param cigarArray\n * @returns array of blocks\n */\nfunction makeBlocks(alignment, cigarArray) {\n\n    const blocks = []\n\n    let insertions\n    let gaps\n    let seqOffset = 0\n    let pos = alignment.start\n\n    alignment.scStart = alignment.start\n    alignment.scLengthOnRef = alignment.lengthOnRef\n\n    for (let c of cigarArray) {\n\n        let scPos\n        switch (c.ltr) {\n            case 'H' :\n                break // ignore hard clips\n            case 'P' :\n                break // ignore pads\n            case 'S' :\n\n                scPos = pos\n                alignment.scLengthOnRef += c.len\n                if (blocks.length === 0) {\n                    alignment.scStart -= c.len\n                    scPos -= c.len\n                }\n                blocks.push(new AlignmentBlock({\n                    start: scPos,\n                    seqOffset: seqOffset,\n                    len: c.len,\n                    type: 'S'\n                }))\n                seqOffset += c.len\n                break // soft clip read bases\n            case 'N' :\n            case 'D':\n                if (gaps === undefined) {\n                    gaps = []\n                }\n                gaps.push({\n                    start: pos,\n                    len: c.len,\n                    type: c.ltr\n                })\n                pos += c.len\n                break\n            case 'I' :\n\n                if (insertions === undefined) {\n                    insertions = []\n                }\n                insertions.push(new AlignmentBlock({\n                    start: pos,\n                    len: c.len,\n                    seqOffset: seqOffset,\n                    type: 'I'\n                }))\n                seqOffset += c.len\n                break\n            case 'M' :\n            case 'EQ' :\n            case '=' :\n            case 'X' :\n                blocks.push(new AlignmentBlock({\n                    start: pos,\n                    seqOffset: seqOffset,\n                    len: c.len,\n                    type: 'M'\n                }))\n                seqOffset += c.len\n                pos += c.len\n\n                break\n\n            default :\n                console.log('Error processing cigar element: ' + c.len + c.ltr)\n        }\n    }\n\n    alignment.blocks = blocks\n    alignment.insertions = insertions\n    alignment.gaps = gaps\n\n}\n\nfunction readInt(ba, offset) {\n    return (ba[offset + 3] << 24) | (ba[offset + 2] << 16) | (ba[offset + 1] << 8) | (ba[offset])\n}\n\nfunction readShort(ba, offset) {\n    return (ba[offset + 1] << 8) | (ba[offset])\n}\n\n/**\n * Build a list of cigar operators from a cigarString.  Removes padding operators and concatenates consecutive\n * operators of the same type\n *\n * @param cigarString\n * @return\n */\nfunction buildOperators(cigarString) {\n\n    var operators, buffer, i, len, prevOp, next, op, nBases\n\n    operators = []\n    buffer = []\n\n    // Create list of cigar operators\n    prevOp = null\n    len = cigarString.length\n    for (i = 0; i < len; i++) {\n        next = cigarString.charAt(i)\n        if (isDigit(next)) {\n            buffer.push(next)\n        } else {\n            op = next\n            nBases = Number.parseInt(buffer.join(''))\n            buffer = []\n\n            if (prevOp !== null && prevOp.ltr === op) {\n                prevOp.len += nBases\n            } else {\n                prevOp = {len: nBases, ltr: op}\n                operators.push(prevOp)\n            }\n        }\n    }\n    return operators\n\n}\n\nfunction isDigit(a) {\n    var charCode = a.charCodeAt(0)\n    return (charCode >= 48 && charCode <= 57) // 0-9\n}\n\nfunction decodeSamTags(tags) {\n\n    var tagDict = {}\n    tags.forEach(function (tag) {\n        var tokens = tag.split(':')\n        tagDict[tokens[0]] = tokens[2]\n    })\n\n    return tagDict\n}\n\nexport default BamUtils\n\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport AlignmentContainer from \"./alignmentContainer.js\"\nimport BamUtils from \"./bamUtils.js\"\nimport {BGZip, FeatureCache, igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions, isDataURL} from \"../util/igvUtils.js\"\n\n/**\n * Class for reading a bam file\n *\n * @param config\n * @constructor\n */\nclass BamReaderNonIndexed {\n\n    constructor(config, genome) {\n        this.config = config\n        this.genome = genome\n        this.bamPath = config.url\n        this.isDataUri = isDataURL(config.url)\n        BamUtils.setReaderDefaults(this, config)\n    }\n\n    // Return an alignment container\n    async readAlignments(chr, bpStart, bpEnd) {\n\n        if (this.alignmentCache) {\n            const header = this.header\n            const queryChr = header.chrAliasTable.hasOwnProperty(chr) ? header.chrAliasTable[chr] : chr\n            const qAlignments = this.alignmentCache.queryFeatures(queryChr, bpStart, bpEnd)\n            const alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, this.config)\n            for (let a of qAlignments) {\n                alignmentContainer.push(a)\n            }\n            alignmentContainer.finish()\n            return alignmentContainer\n\n        } else {\n            if (this.isDataUri) {\n                const data = decodeDataURI(this.bamPath)\n                const unc = BGZip.unbgzf(data.buffer)\n                this.parseAlignments(unc)\n                return this.fetchAlignments(chr, bpStart, bpEnd)\n            } else {\n                const arrayBuffer = await igvxhr.loadArrayBuffer(this.bamPath, buildOptions(this.config))\n                const unc = BGZip.unbgzf(arrayBuffer)\n                this.parseAlignments(unc)\n                return this.fetchAlignments(chr, bpStart, bpEnd)\n            }\n        }\n\n    }\n\n    parseAlignments(data) {\n        const alignments = []\n        this.header = BamUtils.decodeBamHeader(data)\n        BamUtils.decodeBamRecords(data, this.header.size, alignments, this.header.chrNames)\n        this.alignmentCache = new FeatureCache(alignments, this.genome)\n    }\n\n    fetchAlignments(chr, bpStart, bpEnd) {\n        const queryChr = this.header.chrAliasTable.hasOwnProperty(chr) ? this.header.chrAliasTable[chr] : chr\n        const features = this.alignmentCache.queryFeatures(queryChr, bpStart, bpEnd)\n        const alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, this.config)\n        for (let feature of features) {\n            alignmentContainer.push(feature)\n        }\n        alignmentContainer.finish()\n        return alignmentContainer\n    }\n\n}\n\nfunction decodeDataURI(dataURI) {\n\n    const split = dataURI.split(',')\n    const info = split[0].split(':')[1]\n    let dataString = split[1]\n\n    if (info.indexOf('base64') >= 0) {\n        dataString = atob(dataString)\n    } else {\n        dataString = decodeURI(dataString)\n    }\n\n    const bytes = new Uint8Array(dataString.length)\n    for (var i = 0; i < dataString.length; i++) {\n        bytes[i] = dataString.charCodeAt(i)\n    }\n    return bytes\n}\n\n\nexport default BamReaderNonIndexed\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {loadIndex} from \"./indexFactory.js\"\nimport AlignmentContainer from \"./alignmentContainer.js\"\nimport BamUtils from \"./bamUtils.js\"\nimport {BGZip, igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\nimport BGZBlockLoader from \"./bgzBlockLoader.js\"\n\n/**\n * Class for reading a bam file\n *\n * @param config\n * @constructor\n */\nclass BamReader {\n\n    constructor(config, genome) {\n        this.config = config\n        this.genome = genome\n        this.bamPath = config.url\n        this.baiPath = config.indexURL\n        BamUtils.setReaderDefaults(this, config)\n\n        this._blockLoader = new BGZBlockLoader(config)\n    }\n\n    async readAlignments(chr, bpStart, bpEnd) {\n\n        const chrToIndex = await this.getChrIndex()\n        const queryChr = this.chrAliasTable.hasOwnProperty(chr) ? this.chrAliasTable[chr] : chr\n        const chrId = chrToIndex[queryChr]\n        const alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, this.config)\n\n        if (chrId === undefined) {\n            return alignmentContainer\n\n        } else {\n\n            const bamIndex = await this.getIndex()\n            const chunks = bamIndex.chunksForRange(chrId, bpStart, bpEnd)\n\n            if (!chunks || chunks.length === 0) {\n                return alignmentContainer\n            }\n\n            for (let c of chunks) {\n                const ba = await this._blockLoader.getData(c.minv, c.maxv)\n                const done = BamUtils.decodeBamRecords(ba, c.minv.offset, alignmentContainer, this.indexToChr, chrId, bpStart, bpEnd, this.filter)\n                if (done) {\n                    break\n                }\n            }\n            alignmentContainer.finish()\n            return alignmentContainer\n        }\n    }\n\n    async getHeader() {\n        if (!this.header) {\n            const genome = this.genome\n            const index = await this.getIndex()\n            let start\n            let len\n            if (index.firstBlockPosition) {\n                const bsizeOptions = buildOptions(this.config, {range: {start: index.firstBlockPosition, size: 26}})\n                const abuffer = await igvxhr.loadArrayBuffer(this.bamPath, bsizeOptions)\n                const bsize = BGZip.bgzBlockSize(abuffer)\n                len = index.firstBlockPosition + bsize   // Insure we get the complete compressed block containing the header\n            } else {\n                len = 64000\n            }\n\n            const options = buildOptions(this.config, {range: {start: 0, size: len}})\n            this.header = await BamUtils.readHeader(this.bamPath, options, genome)\n        }\n        return this.header\n    }\n\n    async getIndex() {\n        const genome = this.genome\n        if (!this.index) {\n            this.index = await loadIndex(this.baiPath, this.config, genome)\n        }\n        return this.index\n    }\n\n    async getChrIndex() {\n        if (this.chrToIndex) {\n            return this.chrToIndex\n        } else {\n            const header = await this.getHeader()\n            this.chrToIndex = header.chrToIndex\n            this.indexToChr = header.chrNames\n            this.chrAliasTable = header.chrAliasTable\n            return this.chrToIndex\n\n        }\n    }\n}\n\nexport default BamReader\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport BamReader from \"./bamReader.js\"\nimport AlignmentContainer from \"./alignmentContainer.js\"\nimport BamUtils from \"./bamUtils.js\"\n\nclass ShardedBamReader {\n\n    constructor(config, genome) {\n\n        this.config = config\n        this.genome = genome\n\n        const bamReaders = {}\n        const chrAliasTable = {}\n\n        config.sources.sequences.forEach(function (chr) {\n            const queryChr = genome ? genome.getChromosomeName(chr) : chr\n            bamReaders[queryChr] = getReader(config, genome, chr)\n        })\n\n        this.bamReaders = bamReaders\n\n        BamUtils.setReaderDefaults(this, config)\n    }\n\n    async readAlignments(chr, start, end) {\n\n        if (!this.bamReaders.hasOwnProperty(chr)) {\n            return new AlignmentContainer(chr, start, end, this.config)\n        } else {\n\n            let reader = this.bamReaders[chr]\n            const a = await reader.readAlignments(chr, start, end)\n            return a\n        }\n    }\n}\n\nfunction getReader(config, genome, chr) {\n    const tmp = {\n        url: config.sources.url.replace(\"$CHR\", chr)\n    }\n    if (config.sources.indexURL) {\n        tmp.indexURL = config.sources.indexURL.replace(\"$CHR\", chr)\n    }\n    const bamConfig = Object.assign(config, tmp)\n\n    // TODO -- support non-indexed, htsget, etc\n    return new BamReader(bamConfig, genome)\n}\n\nexport default ShardedBamReader\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport AlignmentContainer from \"./alignmentContainer.js\"\nimport BamUtils from \"./bamUtils.js\"\nimport {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\n\n/**\n * Class for reading bam records from an igv.js-flask server backed by pysam.  Deprecated.\n *\n * @param config\n * @constructor\n */\nconst BamWebserviceReader = function (config, genome) {\n\n    this.config = config\n    this.genome = genome\n    BamUtils.setReaderDefaults(this, config)\n\n}\n\n// Example http://localhost:5000/alignments/?reference=/Users/jrobinso/hg19mini.fa&file=/Users/jrobinso/cram_with_crai_index.cram&region=1:100-2000\n\nBamWebserviceReader.prototype.readAlignments = function (chr, bpStart, bpEnd) {\n\n    var self = this\n\n    return getHeader.call(self)\n\n        .then(function (header) {\n\n            var queryChr, url\n\n            queryChr = header.chrAliasTable.hasOwnProperty(chr) ? header.chrAliasTable[chr] : chr\n\n            url = self.config.url +\n                \"?reference=\" + self.config.referenceFile +\n                \"&file=\" + self.config.alignmentFile + \"\" +\n                \"&region=\" + queryChr + \":\" + bpStart + \"-\" + bpEnd\n\n\n            return igvxhr.loadString(url, buildOptions(self.config))\n\n                .then(function (sam) {\n\n                    var alignmentContainer, chrId, ba\n\n                    chrId = header.chrToIndex[queryChr]\n\n                    alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, self.config)\n\n                    BamUtils.decodeSamRecords(sam, alignmentContainer, queryChr, bpStart, bpEnd, self.filter)\n\n                    return alignmentContainer\n\n                })\n\n        })\n}\n\n\n// Example  http://localhost:5000/alignments/?reference=/Users/jrobinso/hg19mini.fa&file=/Users/jrobinso/cram_with_crai_index.cram&options=-b%20-H\nfunction getHeader() {\n\n    const self = this\n    const genome = this.genome\n\n    if (this.header) {\n\n        return Promise.resolve(this.header)\n\n    } else {\n\n        const url = this.config.url + \"?file=\" + this.config.alignmentFile + \"&options=-b,-H\"\n        const options = buildOptions(this.config)\n\n        return BamUtils.readHeader(url, options, genome)\n\n            .then(function (header) {\n\n                self.header = header\n                return header\n\n            })\n    }\n\n}\n\n\nfunction readInt(ba, offset) {\n    return (ba[offset + 3] << 24) | (ba[offset + 2] << 16) | (ba[offset + 1] << 8) | (ba[offset])\n}\n\nexport default BamWebserviceReader\n\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport HtsgetReader from \"./htsgetReader.js\"\nimport AlignmentContainer from \"../bam/alignmentContainer.js\"\nimport BamUtils from \"../bam/bamUtils.js\"\nimport {BGZip} from \"../../node_modules/igv-utils/src/index.js\"\n\nclass HtsgetBamReader extends HtsgetReader {\n\n    constructor(config, genome) {\n        super(config, genome)\n        BamUtils.setReaderDefaults(this, config)\n    }\n\n\n    async readAlignments(chr, start, end) {\n\n        if (!this.header) {\n            const compressedData = await this.readHeaderData()\n            const ba = BGZip.unbgzf(compressedData.buffer)\n            this.header = BamUtils.decodeBamHeader(ba, this.genome)\n            this.chrAliasTable = new Map()\n            for (let key of Object.keys(this.header.chrAliasTable)) {\n                this.chrAliasTable.set(key, this.header.chrAliasTable[key])\n            }\n        }\n\n        let queryChr = this.chrAliasTable.has(chr) ? this.chrAliasTable.get(chr) : chr\n\n        const compressedData = await this.readData(queryChr, start, end)\n\n        // BAM decoding\n        const ba = BGZip.unbgzf(compressedData.buffer)\n\n        const chrIdx = this.header.chrToIndex[chr]\n        const alignmentContainer = new AlignmentContainer(chr, start, end, this.config)\n        BamUtils.decodeBamRecords(ba, this.header.size, alignmentContainer, this.header.chrNames, chrIdx, start, end)\n        alignmentContainer.finish()\n\n        return alignmentContainer\n\n    }\n\n}\n\n\nexport default HtsgetBamReader","/*! For license information please see cram-bundle.js.LICENSE.txt */\nconst fn = ()=>{var e={368:function(e,t,r){\"use strict\";var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e))}catch(e){o(e)}}function a(e){try{f(n.throw(e))}catch(e){o(e)}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t)}))).then(s,a)}f((n=n.apply(e,t||[])).next())}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const o=i(r(4105)),s=i(r(1269)),a=r(597),f=r(3427),h=r(8577);function l(e,t){if(t.some((e=>void 0===e)))throw new h.CramMalformedError(\"invalid .crai index file\");const[r,n,i,o,s,a]=t;e[r]||(e[r]=[]),e[r].push({start:n,span:i,containerStart:o,sliceStart:s,sliceBytes:a})}t.default=class{constructor(e){this.filehandle=(0,f.open)(e.url,e.path,e.filehandle),this._parseCache=new o.default({cache:new s.default({maxSize:1}),fill:(e,t)=>this.parseIndex()})}parseIndex(){const e={};return this.filehandle.readFile().then((e=>31===e[0]&&139===e[1]?(0,a.unzip)(e):e)).then((t=>{if(t.length>4&&21578050===t.readUInt32LE(0))throw new h.CramMalformedError(\"invalid .crai index file. note: file appears to be a .bai index. this is technically legal but please open a github issue if you need support\");let r=[],n=\"\";for(let i=0;i<t.length;i+=1){const o=t[i];if(o>=48&&o<=57||!n&&45===o)n+=String.fromCharCode(o);else if(9===o)r.push(Number.parseInt(n,10)),n=\"\";else if(10===o)r.push(Number.parseInt(n,10)),n=\"\",l(e,r),r=[];else if(13!==o&&32!==o)throw new h.CramMalformedError(\"invalid .crai index file\")}return n&&r.push(Number.parseInt(n,10)),6===r.length&&l(e,r),Object.entries(e).forEach((([t,r])=>{e[t]=r.sort(((e,t)=>e.start-t.start||e.span-t.span))})),e}))}getIndex(e={}){return this._parseCache.get(\"index\",null,e.signal)}hasDataForReferenceSequence(e){return n(this,void 0,void 0,(function*(){return!!(yield this.getIndex())[e]}))}getEntriesForRange(e,t,r){return n(this,void 0,void 0,(function*(){const n=(yield this.getIndex())[e];if(!n)return[];const i=e=>{const n=e.start,i=e.start+e.span;return n>r?-1:i<=t?1:0},o=[];for(let e=0;e<n.length;e+=1)0===i(n[e])&&o.push(n[e]);return o}))}}},1050:(e,t)=>{\"use strict\";Object.defineProperty(t,\"__esModule\",{value:!0}),t.default=class{constructor(e,t){this.parameters=e,this.dataType=t}}},4863:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const i=r(8577),o=n(r(1050)),s=r(1074);class a extends o.default{constructor(e,t){if(super(e,t),\"int\"!==this.dataType)throw new i.CramUnimplementedError(`${this.dataType} decoding not yet implemented by BETA codec`)}decode(e,t,r,n){return(0,s.getBits)(t.content,n.coreBlock,this.parameters.length)-this.parameters.offset}}t.default=a},1738:function(e,t,r){\"use 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e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const i=r(8577),o=n(r(1050)),s=r(1074);class a extends o.default{constructor(e,t){if(super(e,t),this.codes={},this.codeBook={},this.sortedByValue=[],this.sortedCodes=[],this.sortedValuesByBitCode=[],this.sortedBitCodes=[],this.sortedBitLengthsByBitCode=[],this.bitCodeToValue=[],![\"byte\",\"int\"].includes(this.dataType))throw new TypeError(`${this.dataType} decoding not yet implemented by HUFFMAN_INT codec`);this.buildCodeBook(),this.buildCodes(),this.buildCaches(),0===this.sortedCodes[0].bitLength&&(this._decode=this._decodeZeroLengthCode)}buildCodeBook(){let e=new Array(this.parameters.numCodes);for(let t=0;t<this.parameters.numCodes;t+=1)e[t]={symbol:this.parameters.symbols[t],bitLength:this.parameters.bitLengths[t]};e=e.sort(((e,t)=>e.bitLength-t.bitLength||e.symbol-t.symbol)),this.codeBook={},e.forEach((e=>{this.codeBook[e.bitLength]||(this.codeBook[e.bitLength]=[]),this.codeBook[e.bitLength].push(e.symbol)}))}buildCodes(){this.codes={};let e=0,t=-1;Object.entries(this.codeBook).forEach((([r,n])=>{const o=parseInt(r,10);n.forEach((r=>{const n={bitLength:o,value:r,bitCode:0};t+=1;const s=o-e;if(t<<=s,n.bitCode=t,e+=s,function(e){let t=e-(e>>1)&1431655765;return t=(858993459&t)+(t>>2&858993459),16843009*(t+(t>>4)&252645135)>>24}(t)>o)throw new i.CramMalformedError(\"Symbol out of 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r=e;this.sortedCodes[r+1].bitLength===t&&r<this.sortedCodes.length;r+=1)e+=1}}throw new i.CramMalformedError(\"Huffman symbol not found.\")}}t.default=a},8772:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0}),t.instantiateCodec=void 0;const i=r(8577),o=n(r(2082)),s=n(r(5844)),a=n(r(1405)),f=n(r(1738)),h=n(r(4863)),l=n(r(4229)),u=n(r(8821)),c={1:s.default,3:o.default,4:f.default,5:a.default,6:h.default,7:u.default,9:l.default};t.instantiateCodec=function e(t,r){const n=(o=\"ignore\"===r?0:t.codecId,c[o]);var o;if(!n)throw new i.CramUnimplementedError(`no codec implemented for codec ID ${t.codecId}`);return new n(t.parameters,r,e)}},8821:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const i=r(8577),o=n(r(1050)),s=r(1074);class a extends 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n=r(8772),i=r(8577),o={BF:\"int\",CF:\"int\",RI:\"int\",RL:\"int\",AP:\"int\",RG:\"int\",MF:\"int\",NS:\"int\",NP:\"int\",TS:\"int\",NF:\"int\",TC:\"byte\",TN:\"int\",FN:\"int\",FC:\"byte\",FP:\"int\",BS:\"byte\",IN:\"byteArray\",SC:\"byteArray\",DL:\"int\",BA:\"byte\",BB:\"byteArray\",RS:\"int\",PD:\"int\",HC:\"int\",MQ:\"int\",RN:\"byteArray\",QS:\"byte\",QQ:\"byteArray\",TL:\"int\"};t.default=class{constructor(e){this.dataSeriesCodecCache={},this.tagCodecCache={},this.tagEncoding={},this.readNamesIncluded=e.preservation.RN,this.APdelta=e.preservation.AP,this.referenceRequired=!!e.preservation.RR,this.tagIdsDictionary=e.preservation.TD,this.substitutionMatrix=function(e){const t=new Array(5);for(let e=0;e<5;e+=1)t[e]=new Array(4);return t[0][e[0]>>6&3]=\"C\",t[0][e[0]>>4&3]=\"G\",t[0][e[0]>>2&3]=\"T\",t[0][e[0]>>0&3]=\"N\",t[1][e[1]>>6&3]=\"A\",t[1][e[1]>>4&3]=\"G\",t[1][e[1]>>2&3]=\"T\",t[1][e[1]>>0&3]=\"N\",t[2][e[2]>>6&3]=\"A\",t[2][e[2]>>4&3]=\"C\",t[2][e[2]>>2&3]=\"T\",t[2][e[2]>>0&3]=\"N\",t[3][e[3]>>6&3]=\"A\",t[3][e[3]>>4&3]=\"C\",t[3][e[3]>>2&3]=\"G\",t[3][e[3]>>0&3]=\"N\",t[4][e[4]>>6&3]=\"A\",t[4][e[4]>>4&3]=\"C\",t[4][e[4]>>2&3]=\"G\",t[4][e[4]>>0&3]=\"T\",t}(e.preservation.SM),this.dataSeriesEncoding=e.dataSeriesEncoding,this.tagEncoding=e.tagEncoding,this.preservation=e.preservation,this._size=e._size,this._endPosition=e._endPosition}getCodecForTag(e){if(!this.tagCodecCache[e]){const t=this.tagEncoding[e];t&&(this.tagCodecCache[e]=(0,n.instantiateCodec)(t,\"byteArray\"))}return this.tagCodecCache[e]}getTagNames(e){return this.tagIdsDictionary[e]}getCodecForDataSeries(e){let t=this.dataSeriesCodecCache[e];if(void 0===t){const r=this.dataSeriesEncoding[e];if(r){const s=o[e];if(!s)throw new i.CramMalformedError(`data series name ${e} not defined in file compression header`);t=(0,n.instantiateCodec)(r,s),this.dataSeriesCodecCache[e]=t}}return t}toJSON(){const e={};return Object.keys(this).forEach((t=>{/Cache$/.test(t)||(e[t]=this[t])})),e}}},6284:function(e,t,r){\"use strict\";var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e))}catch(e){o(e)}}function a(e){try{f(n.throw(e))}catch(e){o(e)}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t)}))).then(s,a)}f((n=n.apply(e,t||[])).next())}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const o=r(8577),s=r(9488),a=i(r(6601)),f=i(r(8543));class h{constructor(e,t){this.file=e,this.filePosition=t}getHeader(){return this._readContainerHeader(this.filePosition)}getCompressionHeaderBlock(){return n(this,void 0,void 0,(function*(){if(!(yield 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e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const o=r(597),s=i(r(2779)),a=i(r(1269)),f=r(8577),h=i(r(9675)),l=r(6141),u=i(r(3498)),c=i(r(6284)),d=r(3427),p=r(9488),g=r(7578);class m{constructor(e){var t;if(this.file=(0,d.open)(e.url,e.path,e.filehandle),this.validateChecksums=!0,this.fetchReferenceSequenceCallback=e.seqFetch,this.options={checkSequenceMD5:e.checkSequenceMD5,cacheSize:null!==(t=e.cacheSize)&&void 0!==t?t:2e4},this.featureCache=new a.default({maxSize:this.options.cacheSize}),function(){const e=new Uint32Array([287454020]),t=new Uint8Array(e.buffer);return 68===t[0]?0:17===t[0]?1:2}()>0)throw new Error(\"Detected big-endian machine, may be unable to run\")}read(e,t,r,n){return this.file.read(e,t,r,n)}stat(){return this.file.stat()}getDefinition(){return n(this,void 0,void 0,(function*(){const e=Buffer.allocUnsafe(l.cramFileDefinition.maxLength);yield this.file.read(e,0,l.cramFileDefinition.maxLength,0);const t=l.cramFileDefinition.parser.parse(e).result;if(2!==t.majorVersion&&3!==t.majorVersion)throw new f.CramUnimplementedError(`CRAM version ${t.majorVersion} not supported`);return t}))}getSamHeader(){return n(this,void 0,void 0,(function*(){const e=yield this.getContainerById(0);if(!e)throw new f.CramMalformedError(\"file contains no containers\");const t=yield e.getFirstBlock();if(void 0===t)return(0,g.parseHeaderText)(\"\");const r=t.content,n=r.readInt32LE(0),i=r.toString(\"utf8\",4,4+n);return this.header=i,(0,g.parseHeaderText)(i)}))}getHeaderText(){return n(this,void 0,void 0,(function*(){return yield this.getSamHeader(),this.header}))}getSectionParsers(){return n(this,void 0,void 0,(function*(){const{majorVersion:e}=yield this.getDefinition();return(0,l.getSectionParsers)(e)}))}getContainerById(e){return n(this,void 0,void 0,(function*(){const t=yield this.getSectionParsers();let r=t.cramFileDefinition.maxLength;const{size:n}=yield this.file.stat(),{cramContainerHeader1:i}=t;let o;for(let t=0;t<=e;t+=1){if(r+i.maxLength+8>=n)return;o=this.getContainerAtPosition(r);const s=yield o.getHeader();if(!s)throw new f.CramMalformedError(`container ${e} not found in file`);if(0===t){r=s._endPosition;for(let e=0;e<s.numBlocks;e+=1){const e=yield this.readBlock(r);if(void 0===e)return;r=e._endPosition}}else r+=s._size+s.length}return o}))}checkCrc32(e,t,r,i){return n(this,void 0,void 0,(function*(){const n=Buffer.allocUnsafe(t);yield this.file.read(n,0,t,e);const o=s.default.unsigned(n);if(o!==r)throw new f.CramMalformedError(`crc mismatch in ${i}: recorded CRC32 = ${r}, but calculated CRC32 = ${o}`)}))}containerCount(){return n(this,void 0,void 0,(function*(){const e=yield this.getSectionParsers(),{size:t}=yield this.file.stat(),{cramContainerHeader1:r}=e;let n=0,i=e.cramFileDefinition.maxLength;for(;i+r.maxLength+8<t;){const e=yield this.getContainerAtPosition(i).getHeader();if(!e)break;if(0===n){i=e._endPosition;for(let t=0;t<e.numBlocks;t+=1){const e=yield this.readBlock(i);if(void 0===e)return;i=e._endPosition}}else i+=e._size+e.length;n+=1}return n}))}getContainerAtPosition(e){return new c.default(this,e)}readBlockHeader(e){return n(this,void 0,void 0,(function*(){const t=yield this.getSectionParsers(),{cramBlockHeader:r}=t,{size:n}=yield this.file.stat();if(e+r.maxLength>=n)return;const i=Buffer.allocUnsafe(r.maxLength);return yield this.file.read(i,0,r.maxLength,e),(0,p.parseItem)(i,r.parser,0,e)}))}_parseSection(e,t,r=e.maxLength,i){return n(this,void 0,void 0,(function*(){let n;if(i)n=i;else{const{size:e}=yield this.file.stat();if(t+r>=e)return;n=Buffer.allocUnsafe(r),yield this.file.read(n,0,r,t)}const o=(0,p.parseItem)(n,e.parser,0,t);if(o._size!==r)throw new f.CramMalformedError(`section read error: requested size ${r} does not equal parsed size ${o._size}`);return o}))}_uncompress(e,t,r){if(\"gzip\"===e)(0,o.unzip)(t).copy(r);else if(\"bzip2\"===e){const e=bzip2.array(t);let n,i=bzip2.header(e),o=0;do{n=bzip2.decompress(e,i),-1!=n&&(Buffer.from(n).copy(r,o),o+=n.length,i-=n.length)}while(-1!=n)}else if(\"rans\"===e)(0,h.default)(t,r);else if(\"rans4x16\"===e)u.default.r4x16_uncompress(t,r);else if(\"arith\"===e)u.default.arith_uncompress(t,r);else if(\"fqzcomp\"===e)u.default.fqzcomp_uncompress(t,r);else{if(\"tok3\"!==e)throw new f.CramUnimplementedError(`${e} decompression not yet implemented`);u.default.tok3_uncompress(t,r)}}readBlock(e){return n(this,void 0,void 0,(function*(){const{majorVersion:t}=yield this.getDefinition(),r=yield this.getSectionParsers(),n=yield this.readBlockHeader(e);if(void 0===n)return;const i=n._endPosition,o=Buffer.allocUnsafe(n.uncompressedSize),s=Object.assign(Object.assign({},n),{_endPosition:i,contentPosition:i,content:o});if(\"raw\"!==n.compressionMethod){const e=Buffer.allocUnsafe(n.compressedSize);yield this.read(e,0,n.compressedSize,i),this._uncompress(n.compressionMethod,e,o)}else yield this.read(o,0,n.uncompressedSize,i);if(t>=3){const t=yield this._parseSection(r.cramBlockCrc32,i+n.compressedSize);if(void 0===t)return;s.crc32=t.crc32,this.validateChecksums&&(yield this.checkCrc32(e,n._size+n.compressedSize,t.crc32,\"block data\")),s._endPosition=t._endPosition,s._size=s.compressedSize+r.cramBlockCrc32.maxLength}else s._endPosition=i+s.compressedSize,s._size=s.compressedSize;return s}))}}t.default=m,\"getDefinition getSectionParsers getSamHeader\".split(\" \").forEach((e=>(0,p.tinyMemoize)(m,e)))},8222:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0}),t.CramRecord=void 0;const i=n(r(5457));var o=r(8631);Object.defineProperty(t,\"CramRecord\",{enumerable:!0,get:function(){return n(o).default}}),t.default=i.default},8631:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0}),t.MateFlagsDecoder=t.CramFlagsDecoder=t.BamFlagsDecoder=t.MateFlags=t.CramFlags=t.BamFlags=void 0;const i=n(r(2615)),o={a:0,A:0,c:1,C:1,g:2,G:2,t:3,T:3,n:4,N:4};function s(e){const t={};for(const[r,n]of e)t[\"is\"+n]=e=>!!(e&r),t[\"set\"+n]=e=>e|r;return t}t.BamFlags=[[1,\"Paired\"],[2,\"ProperlyPaired\"],[4,\"SegmentUnmapped\"],[8,\"MateUnmapped\"],[16,\"ReverseComplemented\"],[32,\"MateReverseComplemented\"],[64,\"Read1\"],[128,\"Read2\"],[256,\"Secondary\"],[512,\"FailedQc\"],[1024,\"Duplicate\"],[2048,\"Supplementary\"]],t.CramFlags=[[1,\"PreservingQualityScores\"],[2,\"Detached\"],[4,\"WithMateDownstream\"],[8,\"DecodeSequenceAsStar\"]],t.MateFlags=[[1,\"OnNegativeStrand\"],[2,\"Unmapped\"]],t.BamFlagsDecoder=s(t.BamFlags),t.CramFlagsDecoder=s(t.CramFlags),t.MateFlagsDecoder=s(t.MateFlags),t.default=class{constructor({flags:e,cramFlags:t,readLength:r,mappingQuality:n,lengthOnRef:i,qualityScores:o,mateRecordNumber:s,readBases:a,readFeatures:f,mateToUse:h,readGroupId:l,readName:u,sequenceId:c,uniqueId:d,templateSize:p,alignmentStart:g,tags:m}){this.flags=e,this.cramFlags=t,this.readLength=r,this.mappingQuality=n,this.lengthOnRef=i,this.qualityScores=o,a&&(this.readBases=a),this.readGroupId=l,this.readName=u,this.sequenceId=c,this.uniqueId=d,this.templateSize=p,this.alignmentStart=g,this.tags=m,f&&(this.readFeatures=f),h&&(this.mate={flags:h.mateFlags,readName:h.mateReadName,sequenceId:h.mateSequenceId,alignmentStart:h.mateAlignmentStart}),s&&(this.mateRecordNumber=s)}isPaired(){return!!(this.flags&i.default.BAM_FPAIRED)}isProperlyPaired(){return!!(this.flags&i.default.BAM_FPROPER_PAIR)}isSegmentUnmapped(){return!!(this.flags&i.default.BAM_FUNMAP)}isMateUnmapped(){return!!(this.flags&i.default.BAM_FMUNMAP)}isReverseComplemented(){return!!(this.flags&i.default.BAM_FREVERSE)}isMateReverseComplemented(){return!!(this.flags&i.default.BAM_FMREVERSE)}isRead1(){return!!(this.flags&i.default.BAM_FREAD1)}isRead2(){return!!(this.flags&i.default.BAM_FREAD2)}isSecondary(){return!!(this.flags&i.default.BAM_FSECONDARY)}isFailedQc(){return!!(this.flags&i.default.BAM_FQCFAIL)}isDuplicate(){return!!(this.flags&i.default.BAM_FDUP)}isSupplementary(){return!!(this.flags&i.default.BAM_FSUPPLEMENTARY)}isDetached(){return!!(this.cramFlags&i.default.CRAM_FLAG_DETACHED)}hasMateDownStream(){return!!(this.cramFlags&i.default.CRAM_FLAG_MATE_DOWNSTREAM)}isPreservingQualityScores(){return!!(this.cramFlags&i.default.CRAM_FLAG_PRESERVE_QUAL_SCORES)}isUnknownBases(){return!!(this.cramFlags&i.default.CRAM_FLAG_NO_SEQ)}getReadBases(){if(!this.readBases&&this._refRegion){const e=function(e,t){if(!e.lengthOnRef&&!e.readLength)return null;if(e.isUnknownBases())return null;const r=e.alignmentStart-t.start;if(!e.readFeatures)return t.seq.substr(r,e.lengthOnRef).toUpperCase();let n=\"\",i=r,o=0;for(;n.length<e.readLength;)if(o<e.readFeatures.length){const r=e.readFeatures[o];if(\"Q\"===r.code||\"q\"===r.code)o+=1;else if(r.pos===n.length+1)if(o+=1,\"b\"===r.code){const e=r.data;n+=e,i+=e.length}else\"B\"===r.code?(n+=r.data[0],i+=1):\"X\"===r.code?(n+=r.sub,i+=1):\"I\"===r.code?n+=r.data:\"D\"===r.code?i+=r.data:\"i\"===r.code?n+=r.data:\"N\"===r.code?i+=r.data:\"S\"===r.code?n+=r.data:\"P\"===r.code||r.code;else if(o<e.readFeatures.length){const r=t.seq.substr(i,e.readFeatures[o].pos-n.length-1);n+=r,i+=r.length}}else{const r=t.seq.substr(i,e.readLength-n.length);n+=r,i+=r.length}return n.toUpperCase()}(this,this._refRegion);e&&(this.readBases=e)}return this.readBases}getPairOrientation(){if(!this.isSegmentUnmapped()&&this.isPaired()&&!this.isMateUnmapped()&&this.mate&&this.sequenceId===this.mate.sequenceId){const e=this.isReverseComplemented()?\"R\":\"F\",t=this.isMateReverseComplemented()?\"R\":\"F\";let r=\" \",n=\" \";this.isRead1()?(r=\"1\",n=\"2\"):this.isRead2()&&(r=\"2\",n=\"1\");const i=[];let o=this.templateLength||this.templateSize;if(void 0===o)throw new Error(\"One of templateSize and templateLength must be set\");return this.alignmentStart>this.mate.alignmentStart&&o>0&&(o=-o),o>0?(i[0]=e,i[1]=r,i[2]=t,i[3]=n):(i[2]=e,i[3]=r,i[0]=t,i[1]=n),i.join(\"\")}return null}addReferenceSequence(e,t){this.readFeatures&&this.readFeatures.forEach((r=>{\"X\"===r.code&&function(e,t,r,n){if(!t)return;const i=n.refPos-t.start,s=t.seq.charAt(i);s&&(n.ref=s);let a=o[s];void 0===a&&(a=4);const f=r.substitutionMatrix[a][n.data];f&&(n.sub=f)}(0,e,t,r)})),!this.readBases&&e.start<=this.alignmentStart&&e.end>=this.alignmentStart+(this.lengthOnRef||this.readLength)-1&&(this._refRegion=e)}toJSON(){const e={};return Object.keys(this).forEach((t=>{\"_\"!==t.charAt(0)&&(e[t]=this[t])})),e.readBases=this.getReadBases(),e}}},6141:(e,t,r)=>{\"use strict\";Object.defineProperty(t,\"__esModule\",{value:!0}),t.getSectionParsers=t.cramFileDefinition=t.isMappedSliceHeader=void 0;const n=r(9996),i=(new n.Parser).itf8(),o={parser:(new n.Parser).string(\"magic\",{length:4}).uint8(\"majorVersion\").uint8(\"minorVersion\").string(\"fileId\",{length:20,stripNull:!0}),maxLength:26};t.cramFileDefinition=o;const s={parser:(new n.Parser).uint8(\"compressionMethod\",{formatter:e=>{const t=[\"raw\",\"gzip\",\"bzip2\",\"lzma\",\"rans\",\"rans4x16\",\"arith\",\"fqzcomp\",\"tok3\"][e];if(!t)throw new Error(`compression method number ${e} not implemented`);return t}}).uint8(\"contentType\",{formatter:e=>{const t=[\"FILE_HEADER\",\"COMPRESSION_HEADER\",\"MAPPED_SLICE_HEADER\",\"UNMAPPED_SLICE_HEADER\",\"EXTERNAL_DATA\",\"CORE_DATA\"][e];if(!t)throw new Error(`invalid block content type id ${e}`);return t}}).itf8(\"contentId\").itf8(\"compressedSize\").itf8(\"uncompressedSize\"),maxLength:17},a={parser:(new n.Parser).uint32(\"crc32\"),maxLength:4},f=(new n.Parser).itf8(\"size\").buffer(\"ents\",{length:\"size\",formatter:e=>{function t(t,r){const n=e.toString(\"utf8\",t,r),i=[];for(let e=0;e<n.length;e+=3)i.push(n.substr(e,3));return i}var r,n=[],i=0;for(r=0;r<e.length;r+=1)e[r]||(n.push(t(i,r)),i=r+1);return r>i&&n.push(t(i,r)),n}}),h=(new n.Parser).uint8(null,{formatter:e=>!!e}),l=(new n.Parser).itf8(\"mapSize\").itf8(\"mapCount\").array(\"ents\",{length:\"mapCount\",type:(new n.Parser).string(\"key\",{length:2,stripNull:!1}).choice(\"value\",{tag:\"key\",choices:{MI:h,UI:h,PI:h,RN:h,AP:h,RR:h,SM:(new n.Parser).array(null,{type:\"uint8\",length:5}),TD:(new n.Parser).nest(null,{type:f,formatter:e=>e.ents})}})});function u(e){const t={};for(let r=0;r<e.ents.length;r+=1){const{key:n,value:i}=e.ents[r];t[n]&&console.warn(`duplicate key ${n} in map`),t[n]=i}return t}const c={cramFileDefinition:o,cramBlockHeader:s,cramBlockCrc32:a};t.isMappedSliceHeader=function(e){return\"number\"==typeof e.refSeqId};const d={cramUnmappedSliceHeader(e){let t=0,r=(new n.Parser).itf8(\"numRecords\");return t+=5,e>=3?(r=r.ltf8(\"recordCounter\"),t+=9):2===e&&(r=r.itf8(\"recordCounter\"),t+=5),r=r.itf8(\"numBlocks\").itf8(\"numContentIds\").array(\"contentIds\",{type:i,length:\"numContentIds\"}),t+=10,e>=2&&(r=r.array(\"md5\",{type:\"uint8\",length:16}),t+=16),{parser:r,maxLength:e=>t+5*e}},cramMappedSliceHeader(e){let t=(new n.Parser).itf8(\"refSeqId\").itf8(\"refSeqStart\").itf8(\"refSeqSpan\").itf8(\"numRecords\"),r=20;return e>=3?(t=t.ltf8(\"recordCounter\"),r+=9):2===e&&(t=t.itf8(\"recordCounter\"),r+=5),t=t.itf8(\"numBlocks\").itf8(\"numContentIds\").array(\"contentIds\",{type:i,length:\"numContentIds\"}).itf8(\"refBaseBlockId\"),r+=15,e>=2&&(t=t.array(\"md5\",{type:\"uint8\",length:16}),r+=16),{parser:t,maxLength:e=>r+5*e}},cramEncoding:e=>({parser:(new n.Parser).namely(\"cramEncoding\").itf8(\"codecId\").itf8(\"parametersBytes\").choice(\"parameters\",{tag:\"codecId\",choices:{0:new n.Parser,1:(new n.Parser).itf8(\"blockContentId\"),2:(new n.Parser).itf8(\"offset\").itf8(\"M\"),3:n.Parser.start().itf8(\"numCodes\").array(\"symbols\",{length:\"numCodes\",type:i}).itf8(\"numLengths\").array(\"bitLengths\",{length:\"numLengths\",type:i}),4:n.Parser.start().nest(\"lengthsEncoding\",{type:\"cramEncoding\"}).nest(\"valuesEncoding\",{type:\"cramEncoding\"}),5:(new n.Parser).uint8(\"stopByte\").itf8(\"blockContentId\"),6:(new n.Parser).itf8(\"offset\").itf8(\"length\"),7:(new n.Parser).itf8(\"offset\").itf8(\"K\"),8:(new n.Parser).itf8(\"offset\").itf8(\"log2m\"),9:(new n.Parser).itf8(\"offset\")}})}),cramDataSeriesEncodingMap(e){return(new n.Parser).itf8(\"mapSize\").itf8(\"mapCount\").array(\"ents\",{length:\"mapCount\",type:(new n.Parser).string(\"key\",{length:2,stripNull:!1}).nest(\"value\",{type:this.cramEncoding(e).parser})})},cramTagEncodingMap(e){return(new n.Parser).itf8(\"mapSize\").itf8(\"mapCount\").array(\"ents\",{length:\"mapCount\",type:(new n.Parser).itf8(\"key\",{formatter:e=>String.fromCharCode(e>>16&255)+String.fromCharCode(e>>8&255)+String.fromCharCode(255&e)}).nest(\"value\",{type:this.cramEncoding(e).parser})})},cramCompressionHeader(e){let t=new n.Parser;return t=t.nest(\"preservation\",{type:l,formatter:u}).nest(\"dataSeriesEncoding\",{type:this.cramDataSeriesEncodingMap(e),formatter:u}).nest(\"tagEncoding\",{type:this.cramTagEncodingMap(e),formatter:u}),{parser:t}},cramContainerHeader1(e){let t=(new n.Parser).int32(\"length\").itf8(\"refSeqId\").itf8(\"refSeqStart\").itf8(\"alignmentSpan\").itf8(\"numRecords\"),r=24;return e>=3?(t=t.ltf8(\"recordCounter\"),r+=9):2===e&&(t=t.itf8(\"recordCounter\"),r+=5),e>1&&(t=t.ltf8(\"numBases\"),r+=9),t=t.itf8(\"numBlocks\").itf8(\"numLandmarks\"),r+=10,{parser:t,maxLength:r}},cramContainerHeader2(e){let t=(new n.Parser).itf8(\"numLandmarks\").array(\"landmarks\",{type:(new n.Parser).itf8(),length:\"numLandmarks\"}),r=0;return e>=3&&(t=t.uint32(\"crc32\"),r=4),{parser:t,maxLength:e=>5+5*e+r}}};t.getSectionParsers=function(e){const t=Object.assign({},c);return Object.keys(d).forEach((r=>{t[r]=d[r](e)})),t}},3757:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const i=n(r(3720)),o=r(8577),s=r(8631),a=r(6141);function f(e){let t=\"\";for(let r=0;r<e.length&&0!==e[r];r++)t+=String.fromCharCode(e[r]);return t}function h(e,t){if(\"Z\"===e)return f(t);if(\"A\"===e)return String.fromCharCode(t[0]);if(\"I\"===e)return i.default.fromBytesLE(t).toNumber();if(\"i\"===e)return new Int32Array(t.buffer)[0];if(\"s\"===e)return new Int16Array(t.buffer)[0];if(\"S\"===e)return new Uint16Array(t.buffer)[0];if(\"c\"===e)return new Int8Array(t.buffer)[0];if(\"C\"===e)return t[0];if(\"f\"===e)return new Float32Array(t.buffer)[0];if(\"H\"===e)return Number.parseInt(f(t).replace(/^0x/,\"\"),16);if(\"B\"===e)return function(e){const t=String.fromCharCode(e[0]),r=Int32Array.from(e.slice(1))[0],n=new Array(r);if(e=e.slice(5),\"c\"===t){const t=new Int8Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e]}else if(\"C\"===t){const t=new Uint8Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e]}else if(\"s\"===t){const t=new Int16Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e]}else if(\"S\"===t){const t=new Uint16Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e]}else if(\"i\"===t){const t=new Int32Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e]}else if(\"I\"===t){const t=new Uint32Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e]}else{if(\"f\"!==t)throw new Error(\"unknown type: \"+t);{const t=new Float32Array(e.buffer);for(let e=0;e<r;e+=1)n[e]=t[e]}}return n}(t);throw new o.CramMalformedError(`Unrecognized tag type ${e}`)}t.default=function(e,t,r,n,i,l,u,c,d){let p=t(\"BF\");const g=t(\"CF\");if(!(0,a.isMappedSliceHeader)(n.parsedContent))throw new Error;let m;m=c>1&&-2===n.parsedContent.refSeqId?t(\"RI\"):n.parsedContent.refSeqId;const y=t(\"RL\");let b=t(\"AP\");r.APdelta&&(b+=u.lastAlignmentStart),u.lastAlignmentStart=b;const v=t(\"RG\");let w,_,B,E;if(r.readNamesIncluded&&(w=f(t(\"RN\"))),s.CramFlagsDecoder.isDetached(g)){const e=t(\"MF\");let n;r.readNamesIncluded||(n=f(t(\"RN\")),w=n);const i=t(\"NS\"),o=t(\"NP\");(e||i>-1)&&(_={mateFlags:e,mateSequenceId:i,mateAlignmentStart:o,mateReadName:n}),B=t(\"TS\"),s.MateFlagsDecoder.isUnmapped(e)&&(p=s.BamFlagsDecoder.setMateUnmapped(p)),s.MateFlagsDecoder.isOnNegativeStrand(e)&&(p=s.BamFlagsDecoder.setMateReverseComplemented(p))}else s.CramFlagsDecoder.isWithMateDownstream(g)&&(E=t(\"NF\")+d+1);const S=t(\"TL\");if(S<0)throw new o.CramMalformedError(\"invalid TL index\");const A={},C=r.getTagNames(S),R=C.length;for(let t=0;t<R;t+=1){const n=C[t],s=n.substr(0,2),a=n.substr(2,1),f=r.getCodecForTag(n);if(!f)throw new o.CramMalformedError(`no codec defined for auxiliary tag ${n}`);const c=f.decode(e,i,l,u);A[s]=h(a,c)}let k,x,I,M,F;if(s.BamFlagsDecoder.isSegmentUnmapped(p))if(s.CramFlagsDecoder.isDecodeSequenceAsStar(g))F=null,M=null;else{const e=new Array(y);for(let r=0;r<e.length;r+=1)e[r]=t(\"BA\");if(F=String.fromCharCode(...e),s.CramFlagsDecoder.isPreservingQualityScores(g)){M=new Array(y);for(let r=0;r<e.length;r+=1)M[r]=t(\"QS\")}}else{const e=t(\"FN\");if(e&&(k=function(e,t,r,n,i){let s=0,a=e-1;const f=new Array(t);function h([e,t]){const n=r(t);if(\"character\"===e)return String.fromCharCode(n);if(\"string\"===e){let e=\"\";for(let t=0;t<n.byteLength;t++)e+=String.fromCharCode(n[t]);return e}return\"numArray\"===e?n.toArray():n}for(let e=0;e<t;e+=1){const t=String.fromCharCode(r(\"FC\")),n=r(\"FP\"),l={B:[\"character\",\"BA\"],S:[\"string\",i>1?\"SC\":\"IN\"],X:[\"number\",\"BS\"],D:[\"number\",\"DL\"],I:[\"string\",\"IN\"],i:[\"character\",\"BA\"],b:[\"string\",\"BB\"],q:[\"numArray\",\"QQ\"],Q:[\"number\",\"QS\"],H:[\"number\",\"HC\"],P:[\"number\",\"PD\"],N:[\"number\",\"RS\"]}[t];if(!l)throw new o.CramMalformedError(`invalid read feature code \"${t}\"`);let u=h(l);const c={B:[\"number\",\"QS\"]}[t];c&&(u=[u,h(c)]),s+=n;const d=s;a+=n;const p=a;\"D\"===t||\"N\"===t?a+=u:\"I\"===t||\"S\"===t?a-=u.length:\"i\"===t&&(a-=1),f[e]={code:t,pos:d,refPos:p,data:u}}return f}(b,e,t,0,c)),x=y,k)for(const{code:e,data:t}of k)\"D\"===e||\"N\"===e?x+=t:\"I\"===e||\"S\"===e?x-=t.length:\"i\"===e&&(x-=1);if(Number.isNaN(x)&&(console.warn(`${w||`${m}:${b}`} record has invalid read features`),x=y),I=t(\"MQ\"),s.CramFlagsDecoder.isPreservingQualityScores(g)){M=new Array(y);for(let e=0;e<M.length;e++)M[e]=t(\"QS\")}}return{readLength:y,sequenceId:m,cramFlags:g,flags:p,alignmentStart:b,readGroupId:v,readName:w,mateToUse:_,templateSize:B,mateRecordNumber:E,readFeatures:k,lengthOnRef:x,mappingQuality:I,qualityScores:M,readBases:F,tags:A}}},6601:function(e,t,r){\"use strict\";var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e))}catch(e){o(e)}}function a(e){try{f(n.throw(e))}catch(e){o(e)}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t)}))).then(s,a)}f((n=n.apply(e,t||[])).next())}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const o=r(8577),s=r(9488),a=i(r(2615)),f=i(r(3757)),h=i(r(8631)),l=r(6141),u=r(1074);function c(e,t,r,n){if(!n)throw new o.CramMalformedError(\"could not resolve intra-slice mate pairs, file seems truncated or malformed\");const i=!!(n.mate||void 0!==n.mateRecordNumber&&n.mateRecordNumber!==t);r.readName||(r.readName=String(r.uniqueId),n.readName=r.readName),r.mate={sequenceId:n.sequenceId,alignmentStart:n.alignmentStart,uniqueId:n.uniqueId},n.readName&&(r.mate.readName=n.readName),n.mate||void 0!==n.mateRecordNumber||(n.mate={sequenceId:r.sequenceId,alignmentStart:r.alignmentStart,uniqueId:r.uniqueId},r.readName&&(n.mate.readName=r.readName)),r.flags|=a.default.BAM_FPAIRED,n.flags&a.default.BAM_FUNMAP&&(r.flags|=a.default.BAM_FMUNMAP),r.flags&a.default.BAM_FUNMAP&&(n.flags|=a.default.BAM_FMUNMAP),n.flags&a.default.BAM_FREVERSE&&(r.flags|=a.default.BAM_FMREVERSE),r.flags&a.default.BAM_FREVERSE&&(n.flags|=a.default.BAM_FMREVERSE),void 0===r.templateLength&&(i?function(e,t,r){const n=function t(r){const n=[r];if(void 0!==r.mateRecordNumber&&r.mateRecordNumber>=0){const i=e[r.mateRecordNumber];if(!i)throw new o.CramMalformedError(\"intra-slice mate record not found, this file seems malformed\");n.push(...t(i))}return n}(r),i=n.map((e=>e.alignmentStart)),s=n.map((e=>e.alignmentStart+e.readLength-1)),a=Math.max(...s)-Math.min(...i)+1;a>=0&&n.forEach((e=>{if(void 0!==e.templateLength)throw new o.CramMalformedError(\"mate pair group has some members that have template lengths already, this file seems malformed\");e.templateLength=a}))}(e,0,r):function(e,t){const r=Math.min(e.alignmentStart,t.alignmentStart),n=Math.max(e.alignmentStart+e.readLength-1,t.alignmentStart+t.readLength-1)-r+1;e.templateLength=n,t.templateLength=n}(r,n)),delete r.mateRecordNumber}class d{constructor(e,t,r){this.container=e,this.containerPosition=t,this.file=e.file}getHeader(){return n(this,void 0,void 0,(function*(){const e=yield this.file.getSectionParsers(),t=yield this.container.getHeader(),r=yield this.file.readBlock(t._endPosition+this.containerPosition);if(void 0===r)throw new Error;if(\"MAPPED_SLICE_HEADER\"===r.contentType){const n=(0,s.parseItem)(r.content,e.cramMappedSliceHeader.parser,0,t._endPosition);return Object.assign(Object.assign({},r),{parsedContent:n})}if(\"UNMAPPED_SLICE_HEADER\"===r.contentType){const n=(0,s.parseItem)(r.content,e.cramUnmappedSliceHeader.parser,0,t._endPosition);return Object.assign(Object.assign({},r),{parsedContent:n})}throw new o.CramMalformedError(`error reading slice header block, invalid content type ${r.contentType}`)}))}getBlocks(){return n(this,void 0,void 0,(function*(){const e=yield this.getHeader();let t=e._endPosition;const r=new Array(e.parsedContent.numBlocks);for(let e=0;e<r.length;e+=1){const n=yield this.file.readBlock(t);if(void 0===n)throw new Error;r[e]=n,t=r[e]._endPosition}return r}))}getCoreDataBlock(){return n(this,void 0,void 0,(function*(){return(yield this.getBlocks())[0]}))}_getBlocksContentIdIndex(){return n(this,void 0,void 0,(function*(){const e=yield this.getBlocks(),t={};return e.forEach((e=>{\"EXTERNAL_DATA\"===e.contentType&&(t[e.contentId]=e)})),t}))}getBlockByContentId(e){return n(this,void 0,void 0,(function*(){return(yield this._getBlocksContentIdIndex())[e]}))}getReferenceRegion(){return n(this,void 0,void 0,(function*(){const e=(yield this.getHeader()).parsedContent;if(!(0,l.isMappedSliceHeader)(e))throw new Error;if(e.refSeqId<0)return;const t=yield this.container.getCompressionScheme();if(void 0===t)throw new Error;if(e.refBaseBlockId>=0){const t=yield this.getBlockByContentId(e.refBaseBlockId);if(!t)throw new o.CramMalformedError(\"embedded reference specified, but reference block does not exist\");return{seq:t.data.toString(\"utf8\"),start:e.refSeqStart,end:e.refSeqStart+e.refSeqSpan-1,span:e.refSeqSpan}}if(t.referenceRequired||this.file.fetchReferenceSequenceCallback){if(!this.file.fetchReferenceSequenceCallback)throw new Error(\"reference sequence not embedded, and seqFetch callback not provided, cannot fetch reference sequence\");const t=yield this.file.fetchReferenceSequenceCallback(e.refSeqId,e.refSeqStart,e.refSeqStart+e.refSeqSpan-1);if(t.length!==e.refSeqSpan)throw new o.CramArgumentError(\"seqFetch callback returned a reference sequence of the wrong length\");return{seq:t,start:e.refSeqStart,end:e.refSeqStart+e.refSeqSpan-1,span:e.refSeqSpan}}}))}getAllRecords(){return this.getRecords((()=>!0))}_fetchRecords(){return n(this,void 0,void 0,(function*(){const{majorVersion:e}=yield this.file.getDefinition(),t=yield this.container.getCompressionScheme();if(void 0===t)throw new Error;const r=yield this.getHeader();if(void 0===r)throw new Error;const n=yield this._getBlocksContentIdIndex();if(e>1&&this.file.options.checkSequenceMD5&&(0,l.isMappedSliceHeader)(r.parsedContent)&&r.parsedContent.refSeqId>=0&&\"0000000000000000\"!==r.parsedContent.md5.join(\"\")){const e=yield this.getReferenceRegion();if(e){const{seq:t,start:n,end:i}=e,a=(0,s.sequenceMD5)(t),f=r.parsedContent.md5.map((e=>(e<16?\"0\":\"\")+e.toString(16))).join(\"\");if(a!==f)throw new o.CramMalformedError(`MD5 checksum reference mismatch for ref ${r.parsedContent.refSeqId} pos ${n}..${i}. recorded MD5: ${f}, calculated MD5: ${a}`)}}const i=yield this.getCoreDataBlock(),a={lastAlignmentStart:(0,l.isMappedSliceHeader)(r.parsedContent)?r.parsedContent.refSeqStart:0,coreBlock:{bitPosition:7,bytePosition:0},externalBlocks:{map:new Map,getCursor(e){let t=this.map.get(e);return void 0===t&&(t={bitPosition:7,bytePosition:0},this.map.set(e,t)),t}}},d=e=>{const r=t.getCodecForDataSeries(e);if(!r)throw new o.CramMalformedError(`no codec defined for ${e} data series`);return r.decode(this,i,n,a)};let p=new Array(r.parsedContent.numRecords);for(let o=0;o<p.length;o+=1)try{const s=(0,f.default)(this,d,t,r,i,n,a,e,o);p[o]=new h.default(Object.assign(Object.assign({},s),{uniqueId:r.contentPosition+r.parsedContent.recordCounter+o+1}))}catch(e){if(e instanceof u.CramBufferOverrunError){console.warn(\"read attempted beyond end of buffer, file seems truncated.\"),p=p.filter((e=>!!e));break}throw e}for(let e=0;e<p.length;e+=1){const{mateRecordNumber:t}=p[e];void 0!==t&&t>=0&&c(p,e,p[e],p[t])}return p}))}getRecords(e){return n(this,void 0,void 0,(function*(){const t=this.container.filePosition+this.containerPosition;let r=this.file.featureCache.get(t.toString());r||(r=this._fetchRecords(),this.file.featureCache.set(t.toString(),r));const i=(yield r).filter(e);if(i.length&&this.file.fetchReferenceSequenceCallback){const e=yield this.getHeader();if((0,l.isMappedSliceHeader)(e.parsedContent)&&(e.parsedContent.refSeqId>=0||-2===e.parsedContent.refSeqId)){const t=e.parsedContent.refSeqId>=0?e.parsedContent.refSeqId:void 0,r=yield this.container.getCompressionScheme();if(void 0===r)throw new Error;const o={};for(let e=0;e<i.length;e+=1){const r=void 0!==t?t:i[e].sequenceId;let n=o[r];n||(n={id:r,start:i[e].alignmentStart,end:-1/0,seq:null},o[r]=n);const s=i[e].alignmentStart+(i[e].lengthOnRef||i[e].readLength)-1;s>n.end&&(n.end=s),i[e].alignmentStart<n.start&&(n.start=i[e].alignmentStart)}yield Promise.all(Object.values(o).map((e=>n(this,void 0,void 0,(function*(){-1!==e.id&&e.start<=e.end&&(e.seq=yield this.file.fetchReferenceSequenceCallback(e.id,e.start,e.end))})))));for(let e=0;e<i.length;e+=1){const n=o[void 0!==t?t:i[e].sequenceId];if(n&&n.seq){const t=n.seq;i[e].addReferenceSequence(Object.assign(Object.assign({},n),{seq:t}),r)}}}}return i}))}}t.default=d,\"getHeader getBlocks _getBlocksContentIdIndex\".split(\" \").forEach((e=>(0,s.tinyMemoize)(d,e)))},9488:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0}),t.sequenceMD5=t.tinyMemoize=t.parseItem=t.parseItf8=t.itf8Size=void 0;const i=n(r(2568)),o=r(1074);t.itf8Size=function(e){return-128&e?-16384&e?-2097152&e?-268435456&e?5:4:3:2:1},t.parseItf8=function(e,t){let r=t;const n=e[r];let i;if(n<128?(i=n,r+=1):n<192?(i=16383&(n<<8|e[r+1]),r+=2):n<224?(i=2097151&(n<<16|e[r+1]<<8|e[r+2]),r+=3):n<240?(i=268435455&(n<<24|e[r+1]<<16|e[r+2]<<8|e[r+3]),r+=4):(i=(15&n)<<28|e[r+1]<<20|e[r+2]<<12|e[r+3]<<4|15&e[r+4],r+=5),r>e.length)throw new o.CramBufferOverrunError(\"Attempted to read beyond end of buffer; this file seems truncated.\");return[i,r-t]},t.parseItem=function(e,t,r=0,n=0){const{offset:i,result:o}=t.parse(e);return Object.assign(Object.assign({},o),{_endPosition:i+n,_size:i-r})},t.tinyMemoize=function(e,t){const r=e.prototype[t],n=`_memo_${t}`;e.prototype[t]=function(){if(!(n in this)){const e=r.call(this);this[n]=e,Promise.resolve(e).catch((()=>{delete this[n]}))}return this[n]}},t.sequenceMD5=function(e){return(0,i.default)(e.toUpperCase().replace(/[^\\x21-\\x7e]/g,\"\"))}},8577:(e,t)=>{\"use strict\";Object.defineProperty(t,\"__esModule\",{value:!0}),t.CramArgumentError=t.CramSizeLimitError=t.CramMalformedError=t.CramUnimplementedError=t.CramError=void 0;class r extends Error{}t.CramError=r;class n extends Error{}t.CramUnimplementedError=n,t.CramMalformedError=class extends r{},t.CramSizeLimitError=class extends r{},t.CramArgumentError=class extends r{}},5590:function(e,t,r){\"use strict\";var n=this&&this.__createBinding||(Object.create?function(e,t,r,n){void 0===n&&(n=r);var i=Object.getOwnPropertyDescriptor(t,r);i&&!(\"get\"in i?!t.__esModule:i.writable||i.configurable)||(i={enumerable:!0,get:function(){return t[r]}}),Object.defineProperty(e,n,i)}:function(e,t,r,n){void 0===n&&(n=r),e[n]=t[r]}),i=this&&this.__setModuleDefault||(Object.create?function(e,t){Object.defineProperty(e,\"default\",{enumerable:!0,value:t})}:function(e,t){e.default=t}),o=this&&this.__importStar||function(e){if(e&&e.__esModule)return e;var t={};if(null!=e)for(var r in e)\"default\"!==r&&Object.prototype.hasOwnProperty.call(e,r)&&n(t,e,r);return i(t,e),t},s=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0}),t.CramRecord=t.CraiIndex=t.IndexedCramFile=t.CramFile=void 0;const a=o(r(8222));t.CramFile=a.default,Object.defineProperty(t,\"CramRecord\",{enumerable:!0,get:function(){return a.CramRecord}});const f=s(r(946));t.IndexedCramFile=f.default;const h=s(r(368));t.CraiIndex=h.default},946:function(e,t,r){\"use strict\";var n=this&&this.__awaiter||function(e,t,r,n){return new(r||(r=Promise))((function(i,o){function s(e){try{f(n.next(e))}catch(e){o(e)}}function a(e){try{f(n.throw(e))}catch(e){o(e)}}function f(e){var t;e.done?i(e.value):(t=e.value,t instanceof r?t:new r((function(e){e(t)}))).then(s,a)}f((n=n.apply(e,t||[])).next())}))},i=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const o=r(8577),s=i(r(8222));t.default=class{constructor(e){if(e.cram?this.cram=e.cram:this.cram=new s.default({url:e.cramUrl,path:e.cramPath,filehandle:e.cramFilehandle,seqFetch:e.seqFetch,checkSequenceMD5:e.checkSequenceMD5,cacheSize:e.cacheSize}),!(this.cram instanceof s.default))throw new Error(\"invalid arguments: no cramfile\");if(this.index=e.index,!this.index.getEntriesForRange)throw new Error(\"invalid arguments: not an index\");this.fetchSizeLimit=e.fetchSizeLimit||3e6}getRecordsForRange(e,t,r,i={}){return n(this,void 0,void 0,(function*(){if(i.viewAsPairs=i.viewAsPairs||!1,i.pairAcrossChr=i.pairAcrossChr||!1,i.maxInsertSize=i.maxInsertSize||2e5,\"string\"==typeof e)throw new o.CramUnimplementedError(\"string sequence names not yet supported\");const n=e,s=yield this.index.getEntriesForRange(n,t,r),a=s.map((e=>e.sliceBytes)).reduce(((e,t)=>e+t),0);if(a>this.fetchSizeLimit)throw new o.CramSizeLimitError(`data size of ${a.toLocaleString()} bytes exceeded fetch size limit of ${this.fetchSizeLimit.toLocaleString()} bytes`);const f=n=>n.sequenceId===e&&n.alignmentStart<=r&&void 0!==n.lengthOnRef&&n.alignmentStart+n.lengthOnRef-1>=t,h=yield Promise.all(s.map((e=>this.getRecordsInSlice(e,f))));let l=Array.prototype.concat(...h);if(i.viewAsPairs){const e={},t={};for(let r=0;r<l.length;r+=1){const n=l[r].readName;if(void 0===n)throw new Error;const i=l[r].uniqueId;e[n]||(e[n]=0),e[n]+=1,t[i]=1}const r={};Object.entries(e).forEach((([e,t])=>{1===t&&(r[e]=!0)}));const o=[];for(let e=0;e<l.length;e+=1){const t=l[e],s=t.readName;if(void 0===s)throw new Error;if(r[s]&&t.mate&&(t.mate.sequenceId===n||i.pairAcrossChr)&&Math.abs(t.alignmentStart-t.mate.alignmentStart)<i.maxInsertSize){const e=this.index.getEntriesForRange(t.mate.sequenceId,t.mate.alignmentStart,t.mate.alignmentStart+1);o.push(e)}}const s=yield Promise.all(o);let a=[];for(let e=0;e<s.length;e+=1)a.push(...s[e]);a=a.sort(((e,t)=>e.toString().localeCompare(t.toString()))).filter(((e,t,r)=>!t||e.toString()!==r[t-1].toString()));const f=[],h=[],u=a.map((e=>e.sliceBytes)).reduce(((e,t)=>e+t),0);if(u>this.fetchSizeLimit)throw new Error(`mate data size of ${u.toLocaleString()} bytes exceeded fetch size limit of ${this.fetchSizeLimit.toLocaleString()} bytes`);a.forEach((e=>{let n=this.cram.featureCache.get(e.toString());n||(n=this.getRecordsInSlice(e,(()=>!0)),this.cram.featureCache.set(e.toString(),n)),f.push(n);const i=n.then((e=>{const n=[];for(let i=0;i<e.length;i+=1){const o=e[i];if(void 0===o.readName)throw new Error;r[o.readName]&&!t[o.uniqueId]&&n.push(o)}return n}));h.push(i)}));const c=yield Promise.all(h);if(c.length){const e=c.reduce(((e,t)=>e.concat(t)));l=l.concat(e)}}return l}))}getRecordsInSlice({containerStart:e,sliceStart:t,sliceBytes:r},n){return this.cram.getContainerAtPosition(e).getSlice(t,r).getRecords(n)}hasDataForReferenceSequence(e){return this.index.hasDataForReferenceSequence(e)}}},3427:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0}),t.open=t.fromUrl=t.RemoteFile=t.LocalFile=void 0;const i=n(r(8575)),o=r(4319),s=r(2949);function a(e){const{protocol:t,pathname:r}=i.default.parse(e);return\"file:\"===t?new s.LocalFile(unescape((0,o.ensureNotNullish)(r))):new s.RemoteFile(e)}Object.defineProperty(t,\"LocalFile\",{enumerable:!0,get:function(){return s.LocalFile}}),Object.defineProperty(t,\"RemoteFile\",{enumerable:!0,get:function(){return s.RemoteFile}}),t.fromUrl=a,t.open=function(e,t,r){if(r)return r;if(e)return a(e);if(t)return new s.LocalFile(t);throw new Error(\"no url, path, or filehandle provided, cannot open\")}},5702:(e,t)=>{\"use strict\";Object.defineProperty(t,\"__esModule\",{value:!0}),t.RANS_BYTE_L=t.TOTFREQ=t.TF_SHIFT=void 0,t.TF_SHIFT=12,t.TOTFREQ=4096,t.RANS_BYTE_L=1<<23},6484:function(e,t,r){\"use strict\";var n=this&&this.__importDefault||function(e){return e&&e.__esModule?e:{default:e}};Object.defineProperty(t,\"__esModule\",{value:!0});const i=r(8577),o=r(5702),s=n(r(7634));t.default=function(e,t,r,n){let a=e.getInt(),f=e.getInt(),h=e.getInt(),l=e.getInt();const u=n.remaining(),c=-4&u;for(let i=0;i<c;i+=4){const u=t.R[s.default.get(a,o.TF_SHIFT)],c=t.R[s.default.get(f,o.TF_SHIFT)],d=t.R[s.default.get(h,o.TF_SHIFT)],p=t.R[s.default.get(l,o.TF_SHIFT)];n.putAt(i,u),n.putAt(i+1,c),n.putAt(i+2,d),n.putAt(i+3,p),a=s.default.advanceSymbolStep(a,r[255&u],o.TF_SHIFT),f=s.default.advanceSymbolStep(f,r[255&c],o.TF_SHIFT),h=s.default.advanceSymbolStep(h,r[255&d],o.TF_SHIFT),l=s.default.advanceSymbolStep(l,r[255&p],o.TF_SHIFT),a=s.default.renormalize(a,e),f=s.default.renormalize(f,e),h=s.default.renormalize(h,e),l=s.default.renormalize(l,e)}let d;switch(n.setPosition(c),3&u){case 0:break;case 1:d=t.R[s.default.get(a,o.TF_SHIFT)],s.default.advanceSymbol(a,e,r[255&d],o.TF_SHIFT),n.put(d);break;case 2:d=t.R[s.default.get(a,o.TF_SHIFT)],s.default.advanceSymbol(a,e,r[255&d],o.TF_SHIFT),n.put(d),d=t.R[s.default.get(f,o.TF_SHIFT)],s.default.advanceSymbol(f,e,r[255&d],o.TF_SHIFT),n.put(d);break;case 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0);\"),e.pushCode(\"{0} = buffer.toString('{1}', {2}, offset - 1);\",t,this.options.encoding,r)):this.options.greedy&&(e.pushCode(\"var {0} = offset;\",r),e.pushCode(\"while(buffer.length > offset++);\"),e.pushCode(\"{0} = buffer.toString('{1}', {2}, offset);\",t,this.options.encoding,r)),this.options.stripNull&&e.pushCode(\"{0} = {0}.replace(/\\\\x00+$/g, '')\",t)},d.prototype.generateBuffer=function(e){\"eof\"===this.options.readUntil?e.pushCode(\"{0} = buffer.slice(offset);\",e.generateVariable(this.varName)):(e.pushCode(\"{0} = buffer.slice(offset, offset + {1});\",e.generateVariable(this.varName),e.generateOption(this.options.length)),e.pushCode(\"offset += {0};\",e.generateOption(this.options.length))),this.options.clone&&e.pushCode(\"{0} = Buffer.from({0});\",e.generateVariable(this.varName))},d.prototype.generateArray=function(e){var t=e.generateOption(this.options.length),r=e.generateOption(this.options.lengthInBytes),n=this.options.type,i=e.generateTmpVariable(),o=e.generateVariable(this.varName),s=e.generateTmpVariable(),a=this.options.key,u=\"string\"==typeof a;if(u?e.pushCode(\"{0} = {};\",o):e.pushCode(\"{0} = [];\",o),\"function\"==typeof this.options.readUntil?e.pushCode(\"do {\"):\"eof\"===this.options.readUntil?e.pushCode(\"for (var {0} = 0; offset < buffer.length; {0}++) {\",i):void 0!==r?e.pushCode(\"for (var {0} = offset; offset - {0} < {1}; ) {\",i,r):e.pushCode(\"for (var {0} = 0; {0} < {1}; {0}++) {\",i,t),\"string\"==typeof n)if(h[n]){var p=e.generateTmpVariable();e.pushCode(\"var {0} = {1}(offset);\",p,l+n),e.pushCode(\"var {0} = {1}.result; offset = {1}.offset;\",s,p),n!==this.alias&&e.addReference(n)}else e.pushCode(\"var {0} = buffer.read{1}(offset);\",s,c[n]),e.pushCode(\"offset += {0};\",f[c[n]]);else n instanceof d&&(e.pushCode(\"var {0} = {};\",s),e.pushScope(s),n.generate(e),e.popScope());u?e.pushCode(\"{0}[{2}.{1}] = {2};\",o,a,s):e.pushCode(\"{0}.push({1});\",o,s),e.pushCode(\"}\"),\"function\"==typeof this.options.readUntil&&e.pushCode(\" while (!({0}).call(this, {1}, buffer.slice(offset)));\",this.options.readUntil,s)},d.prototype.generateChoiceCase=function(e,t,r){if(\"string\"==typeof r)if(h[r]){var n=e.generateTmpVariable();e.pushCode(\"var {0} = {1}(offset);\",n,l+r),e.pushCode(\"{0} = {1}.result; offset = {1}.offset;\",e.generateVariable(this.varName),n),r!==this.alias&&e.addReference(r)}else e.pushCode(\"{0} = buffer.read{1}(offset);\",e.generateVariable(this.varName),c[r]),e.pushCode(\"offset += {0};\",f[c[r]]);else r instanceof d&&(e.pushPath(t),r.generate(e),e.popPath(t))},d.prototype.generateChoice=function(e){var t=e.generateOption(this.options.tag);this.varName&&e.pushCode(\"{0} = {};\",e.generateVariable(this.varName)),e.pushCode(\"switch({0}) {\",t),Object.keys(this.options.choices).forEach((function(t){var r=this.options.choices[t];Number.isNaN(parseInt(t,10))?e.pushCode(\"case '{0}':\",t):e.pushCode(\"case {0}:\",t),this.generateChoiceCase(e,this.varName,r),e.pushCode(\"break;\")}),this),e.pushCode(\"default:\"),this.options.defaultChoice?this.generateChoiceCase(e,this.varName,this.options.defaultChoice):e.generateError('\"Met undefined tag value \" + {0} + \" at choice\"',t),e.pushCode(\"}\")},d.prototype.generateNest=function(e){var t=e.generateVariable(this.varName);if(this.options.type instanceof d)this.varName&&e.pushCode(\"{0} = {};\",t),e.pushPath(this.varName),this.options.type.generate(e),e.popPath(this.varName);else if(h[this.options.type]){var r=e.generateTmpVariable();e.pushCode(\"var {0} = {1}(offset);\",r,l+this.options.type),e.pushCode(\"{0} = {1}.result; offset = {1}.offset;\",t,r),this.options.type!==this.alias&&e.addReference(this.options.type)}},d.prototype.generateFormatter=function(e,t,r){\"function\"==typeof r&&e.pushCode(\"{0} = ({1}).call(this, {0});\",t,r)},d.prototype.isInteger=function(){return!!this.type.match(/U?Int[8|16|32][BE|LE]?|Bit\\d+/)},d.prototype.itf8=function(e,t){return this.setNextParser(\"itf8\",e,t)},d.prototype.itf8=function(e,t){return this.setNextParser(\"itf8\",e,t)},d.prototype.generateItf8=function(e){var t=e.generateVariable(this.varName),r=e.generateTmpVariable();e.pushCode(\"\\n    var \".concat(r,\" = buffer[offset];\\n    if (\").concat(r,\" < 0x80) {\\n      \").concat(t,\" = \").concat(r,\";\\n      offset += 1;\\n    } else if (\").concat(r,\" < 0xc0) {\\n      \").concat(t,\" = ((\").concat(r,\"<<8) | buffer[offset+1]) & 0x3fff;\\n      offset += 2;\\n    } else if (\").concat(r,\" < 0xe0) {\\n      \").concat(t,\" = ((\").concat(r,\"<<16) | (buffer[offset+1]<< 8) |  buffer[offset+2]) & 0x1fffff;\\n      offset += 3;\\n    } else if (\").concat(r,\" < 0xf0) {\\n      \").concat(t,\" = ((\").concat(r,\"<<24) | (buffer[offset+1]<<16) | (buffer[offset+2]<<8) | buffer[offset+3]) & 0x0fffffff;\\n      offset += 4\\n    } else {\\n      \").concat(t,\" = ((\").concat(r,\" & 0x0f)<<28) | (buffer[offset+1]<<20) | (buffer[offset+2]<<12) | (buffer[offset+3]<<4) | (buffer[offset+4] & 0x0f);\\n      // x=((0xff & 0x0f)<<28) | (0xff<<20) | (0xff<<12) | (0xff<<4) | (0x0f & 0x0f);\\n      // TODO *val_p = uv < 0x80000000UL ? uv : -((int32_t) (0xffffffffUL - uv)) - 1;\\n      offset += 5\\n    }\\n  \"))},d.prototype.ltf8=function(e,t){return this.setNextParser(\"ltf8\",e,t)},d.prototype.generateLtf8=function(e){var t=e.generateVariable(this.varName),r=e.generateTmpVariable();e.pushCode(\"\\n  var \".concat(r,\" = buffer[offset];\\n  if (\").concat(r,\" < 0x80) {\\n    \").concat(t,\" = \").concat(r,\";\\n    offset += 1;\\n  } else if (\").concat(r,\" < 0xc0) {\\n    \").concat(t,\" = ((buffer[offset]<<8) | buffer[offset+1]) & 0x3fff;\\n    offset += 2;\\n  } else if (\").concat(r,\" < 0xe0) {\\n    \").concat(t,\" = ((buffer[offset]<<16) | (buffer[offset+1]<<8) | buffer[offset+2]) & 0x1fffff;\\n    \").concat(t,\" = (((\").concat(r,\" & 63) << 16) | buffer.readUInt16LE(offset + 1));\\n    offset += 3;\\n  } else if (\").concat(r,\" < 0xf0) {\\n    \").concat(t,\" = ((buffer[offset]<<24) | (buffer[offset+1]<<16) | (buffer[offset+2]<<8) | buffer[offset+3]) & 0x0fffffff;\\n    offset += 4;\\n  } else if (\").concat(r,\" < 0xf8) {\\n    \").concat(t,\" = (((buffer[offset] & 15) * Math.pow(2,32))) +\\n      (buffer[offset+1]<<24) | (buffer[offset+2]<<16 | buffer[offset+3]<<8 | buffer[offset+4])\\n    // TODO *val_p = uv < 0x80000000UL ? uv : -((int32_t) (0xffffffffUL - uv)) - 1;\\n    offset += 5;\\n  } else if (\").concat(r,\" < 0xfc) {\\n    \").concat(t,\" = ((((buffer[offset] & 7) << 8) | buffer[offset+1] )) * Math.pow(2,32) +\\n      (buffer[offset+2]<<24) | (buffer[offset+3]<<16 | buffer[offset+4]<<8 | buffer[offset+5])\\n    offset += 6;\\n  } else if (\").concat(r,\" < 0xfe) {\\n    \").concat(t,\" = ((((buffer[offset] & 3) << 16) | buffer[offset+1]<<8 | buffer[offset+2])) * Math.pow(2,32) +\\n      (buffer[offset+3]<<24) | (buffer[offset+4]<<16 | buffer[offset+5]<<8 | buffer[offset+6])\\n    offset += 7;\\n  } else if (\").concat(r,\" < 0xff) {\\n    \").concat(t,\" = Long.fromBytesBE(buffer.slice(offset+1,offset+8));\\n    if (\").concat(t,\".greaterThan(Number.MAX_SAFE_INTEGER) || \").concat(t,\".lessThan(Number.MIN_SAFE_INTEGER))\\n      throw new Error('integer overflow')\\n    \").concat(t,\" = \").concat(t,\".toNumber()\\n    offset += 8;\\n  } else {\\n    \").concat(t,\" = Long.fromBytesBE(buffer.slice(offset+1,offset+9));\\n    if (\").concat(t,\".greaterThan(Number.MAX_SAFE_INTEGER) || \").concat(t,\".lessThan(Number.MIN_SAFE_INTEGER))\\n      throw new Error('integer overflow')\\n    \").concat(t,\" = \").concat(t,\".toNumber()\\n    offset += 9;\\n  }\\n  \"))},t.Parser=d},2961:(e,t)=>{\"use strict\";function r(e){return r=\"function\"==typeof Symbol&&\"symbol\"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&\"function\"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?\"symbol\":typeof e},r(e)}var n=function(){this.code=\"\",this.scopes=[[\"vars\"]],this.isAsync=!1,this.bitFields=[],this.tmpVariableCount=0,this.references={}};n.prototype.generateVariable=function(e){var t=[];for(Array.prototype.push.apply(t,this.scopes[this.scopes.length-1]);/^\\$parent\\./.test(e);)t.pop(),e=e.replace(/^\\$parent\\./,\"\");return e&&t.push(e),t.join(\".\")},n.prototype.generateOption=function(e){switch(r(e)){case\"number\":return e.toString();case\"string\":return this.generateVariable(e);case\"function\":return\"(\".concat(e,\").call(\").concat(this.generateVariable(),\", vars)\");default:return}},n.prototype.generateError=function(){var e=Array.prototype.slice.call(arguments),t=n.interpolate.apply(this,e);this.isAsync?this.pushCode(\"return process.nextTick(function() { callback(new Error(\".concat(t,\"), vars); });\")):this.pushCode(\"throw new Error(\".concat(t,\");\"))},n.prototype.generateTmpVariable=function(){return\"$tmp\".concat(this.tmpVariableCount++)},n.prototype.pushCode=function(){var e=Array.prototype.slice.call(arguments);this.code+=\"\".concat(n.interpolate.apply(this,e),\"\\n\")},n.prototype.pushPath=function(e){e&&this.scopes[this.scopes.length-1].push(e)},n.prototype.popPath=function(e){e&&this.scopes[this.scopes.length-1].pop()},n.prototype.pushScope=function(e){this.scopes.push([e])},n.prototype.popScope=function(){this.scopes.pop()},n.prototype.addReference=function(e){this.references[e]||(this.references[e]={resolved:!1,requested:!1})},n.prototype.markResolved=function(e){this.references[e].resolved=!0},n.prototype.markRequested=function(e){e.forEach(function(e){this.references[e].requested=!0}.bind(this))},n.prototype.getUnresolvedReferences=function(){var e=this.references;return Object.keys(this.references).filter((function(t){return!e[t].resolved&&!e[t].requested}))},n.interpolate=function(e){var t=/{\\d+}/g,r=e.match(t),n=Array.prototype.slice.call(arguments,1);return r&&r.forEach((function(t){var r=parseInt(t.substr(1,t.length-2),10);e=e.replace(t,n[r].toString())})),e},t._=n},22:e=>{e.exports.runInThisContext=function(e){return new Function(\"code\",\"return eval(code);\").call(globalThis,e)}},445:(e,t,r)=>{const n=r(7381),i=r(9260),o=r(576),s=r(4693),a=128;e.exports=class{decode(e){return this.stream=new i(e),this.decodeStream(this.stream)}decodeStream(e,t=0){var r=this.stream.ReadByte();16&r||(t=this.stream.ReadUint7());var n,i=t,o=1&r;if(8&r)return this.decodeStripe(this.stream,t);if(r&a&&([n,i]=this.decodePackMeta(this.stream)),32&r)var s=this.decodeCat(this.stream,i);else s=4&r?this.decodeExt(this.stream,i):64&r?o?this.decodeRLE1(this.stream,i):this.decodeRLE0(this.stream,i):o?this.decode1(this.stream,i):this.decode0(this.stream,i);return r&a&&(s=this.decodePack(s,n,t)),s}encode(e,t){if(this.stream=new i(\"\",0,1.1*e.length+100),this.stream.WriteByte(t),16&t||this.stream.WriteUint7(e.length),8&t)return Buffer.concat([this.stream.buf.slice(0,this.stream.pos),this.encodeStripe(this.stream,e,t>>8)]);var r,n=1&t,o=e.length;return t&a&&([r,e,o]=this.encodePack(e)),t&a&&this.stream.WriteStream(r),64&t?n?this.encodeRLE1(e,o,this.stream):this.encodeRLE0(e,o,this.stream):n?this.encode1(e,o,this.stream):this.encode0(e,o,this.stream)}decode0(e,t){var r=new Buffer.allocUnsafe(t),i=e.ReadByte();0==i&&(i=256);var s=new o(i),a=new n(e);a.RangeStartDecode(e);for(var f=0;f<t;f++)r[f]=s.ModelDecode(e,a);return r}encode0(e,t,r){for(var i=0,s=0;s<t;s++)i<e[s]&&(i=e[s]);i++;var a=new o(i);r.WriteByte(i);var f=new n(r);for(s=0;s<t;s++)a.ModelEncode(r,f,e[s]);return f.RangeFinishEncode(r),r.buf.slice(0,r.pos)}decode1(e,t){var r=new Buffer.allocUnsafe(t),i=e.ReadByte();0==i&&(i=256);for(var s=new Array(i),a=0;a<i;a++)s[a]=new o(i);var f=new n(e);f.RangeStartDecode(e);var h=0;for(a=0;a<t;a++)r[a]=s[h].ModelDecode(e,f),h=r[a];return r}encode1(e,t,r){for(var i=0,s=0;s<t;s++)i<e[s]&&(i=e[s]);i++;var a=new Array(i);for(s=0;s<i;s++)a[s]=new o(i);r.WriteByte(i);var f=new n(r),h=0;for(s=0;s<t;s++)a[h].ModelEncode(r,f,e[s]),h=e[s];return f.RangeFinishEncode(r),r.buf.slice(0,r.pos)}decodeExt(e,t){var r=new Buffer.allocUnsafe(t),n=s.array(e.buf.slice(e.pos)),i=s.header(n),o=0;do{var a=s.decompress(n,i);-1!=a&&(Buffer.from(a).copy(r,o),o+=a.length,i-=a.length)}while(-1!=a);return r}encodeExt(e,t){}decodeRLE0(e,t){var r=new Buffer.allocUnsafe(t),i=e.ReadByte();0==i&&(i=256);for(var s=new o(i),a=new Array(258),f=0;f<=257;f++)a[f]=new o(4);var h=new n(e);for(h.RangeStartDecode(e),f=0;f<t;){r[f]=s.ModelDecode(e,h);for(var l=a[r[f]].ModelDecode(e,h),u=l,c=256;3==l;)l=a[c].ModelDecode(e,h),c=257,u+=l;for(var d=1;d<=u;d++)r[f+d]=r[f];f+=u+1}return r}encodeRLE0(e,t,r){for(var i=0,s=0;s<t;s++)i<e[s]&&(i=e[s]);i++;var a=new o(i),f=new Array(258);for(s=0;s<=257;s++)f[s]=new o(4);r.WriteByte(i);var h=new n(r);for(s=0;s<t;){a.ModelEncode(r,h,e[s]);for(var l=1;s+l<t&&e[s+l]==e[s];)l++;l--;var u=e[s];e[s],s+=l+1;var c=l>=3?3:l;for(f[u].ModelEncode(r,h,c),l-=c,u=256;3==c;)c=l>=3?3:l,f[u].ModelEncode(r,h,c),u=257,l-=c}return h.RangeFinishEncode(r),r.buf.slice(0,r.pos)}decodeRLE1(e,t){var r=new Buffer.allocUnsafe(t),i=e.ReadByte();0==i&&(i=256);for(var s=new Array(i),a=0;a<i;a++)s[a]=new o(i);var f=new Array(258);for(a=0;a<=257;a++)f[a]=new o(4);var h=new n(e);h.RangeStartDecode(e);var l=0;for(a=0;a<t;){r[a]=s[l].ModelDecode(e,h),l=r[a];for(var u=f[r[a]].ModelDecode(e,h),c=u,d=256;3==u;)u=f[d].ModelDecode(e,h),d=257,c+=u;for(var p=1;p<=c;p++)r[a+p]=r[a];a+=c+1}return r}encodeRLE1(e,t,r){for(var i=0,s=0;s<t;s++)i<e[s]&&(i=e[s]);i++;var a=new Array(i);for(s=0;s<i;s++)a[s]=new o(i);var f=new Array(258);for(s=0;s<=257;s++)f[s]=new o(4);r.WriteByte(i);for(var h=new n(r),l=(s=0,0);s<t;){a[l].ModelEncode(r,h,e[s]);for(var u=1;s+u<t&&e[s+u]==e[s];)u++;u--;var c=e[s];l=e[s],s+=u+1;var d=u>=3?3:u;for(f[c].ModelEncode(r,h,d),u-=d,c=256;3==d;)d=u>=3?3:u,f[c].ModelEncode(r,h,d),c=257,u-=d}return h.RangeFinishEncode(r),r.buf.slice(0,r.pos)}decodePackMeta(e){this.nsym=e.ReadByte();for(var t=new Array(this.nsym),r=0;r<this.nsym;r++)t[r]=e.ReadByte();return[t,e.ReadUint7()]}decodePack(e,t,r){var n=new Buffer.allocUnsafe(r);if(this.nsym<=1)for(var i=0;i<r;i++)n[i]=t[0];else if(this.nsym<=2){i=0;for(var o=0;i<r;i++){if(i%8==0)var s=e[o++];n[i]=t[1&s],s>>=1}}else if(this.nsym<=4)for(i=0,o=0;i<r;i++)i%4==0&&(s=e[o++]),n[i]=t[3&s],s>>=2;else{if(!(this.nsym<=16))return e;for(i=0,o=0;i<r;i++)i%2==0&&(s=e[o++]),n[i]=t[15&s],s>>=4}return n}packMeta(e){for(var t=new i(\"\",0,1024),r=new Array(256),n=0;n<e.length;n++)r[e[n]]=1;var o=0;for(n=0;n<256;n++)r[n]&&(r[n]=++o);for(t.WriteByte(o),n=0;n<256;n++)r[n]&&(t.WriteByte(n),r[n]--);return[t,r,o]}encodePack(e){var t,r,n;[t,r,n]=this.packMeta(e);var i=e.length,o=0;if(n<=1)return t.WriteUint7(0),[t,new Buffer.allocUnsafe(0),0];if(n<=2){for(var s=new Buffer.allocUnsafe(Math.floor((i+7)/8)),a=(o=0,0);o<(-8&i);o+=8,a++)s[a]=(r[e[o+0]]<<0)+(r[e[o+1]]<<1)+(r[e[o+2]]<<2)+(r[e[o+3]]<<3)+(r[e[o+4]]<<4)+(r[e[o+5]]<<5)+(r[e[o+6]]<<6)+(r[e[o+7]]<<7);if(o<i){s[a]=0;for(var f=0;o<i;)s[a]|=r[e[o++]]<<f,f++;a++}return t.WriteUint7(a),[t,s,s.length]}if(n<=4){for(s=new Buffer.allocUnsafe(Math.floor((i+3)/4)),o=0,a=0;o<(-4&i);o+=4,a++)s[a]=(r[e[o+0]]<<0)+(r[e[o+1]]<<2)+(r[e[o+2]]<<4)+(r[e[o+3]]<<6);if(o<i){for(s[a]=0,f=0;o<i;)s[a]|=r[e[o++]]<<f,f+=2;a++}return t.WriteUint7(a),[t,s,s.length]}if(n<=16){for(s=new Buffer.allocUnsafe(Math.floor((i+1)/2)),o=0,a=0;o<(-2&i);o+=2,a++)s[a]=(r[e[o+0]]<<0)+(r[e[o+1]]<<4);return o<i&&(s[a++]=r[e[o++]]),t.WriteUint7(a),[t,s,s.length]}return t.WriteUint7(e.length),[t,e,e.length]}encodeStripe(e,t,r){0==r&&(r=4);for(var n=new Array(r),o=new Array(r),s=0;s<r;s++)o[s]=Math.floor(t.length/r)+(t.length%r>s),n[s]=new Array(o[s]);for(var a=0,f=0;f<t.length;f+=r,a++)for(var h=0;h<r;h++)a<n[h].length&&(n[h][a]=t[f+h]);var l=new Array(r),u=0;for(s=0;s<r;s++){var c=this.encode(n[s],0),d=this.encode(n[s],1);l[s]=d.length<c.length?d:c,u+=l[s].length}var p=new i(\"\",0,u+5*r+1);for(p.WriteByte(r),s=0;s<r;s++)p.WriteUint7(l[s].length);for(s=0;s<r;s++)p.WriteData(l[s],l[s].length);return p.buf.slice(0,p.buf.pos)}decodeStripe(e,t){for(var r=e.ReadByte(),n=new Array(r),i=new Array(r),o=0;o<r;o++)n[o]=e.ReadUint7();var s=new Array(r);for(o=0;o<r;o++)i[o]=Math.floor(t/r)+(t%r>o),s[o]=this.decodeStream(e,i[o]);var a=new Buffer.allocUnsafe(t);for(o=0;o<r;o++)for(var f=0;f<i[o];f++)a[f*r+o]=s[o][f];return a}decodeCat(e,t){for(var r=new Buffer.allocUnsafe(t),n=0;n<t;n++)r[n]=e.ReadByte();return r}}},7381:e=>{e.exports=class{constructor(e){this.low=0,this.range=4294967295,this.code=0,this.FFnum=0,this.carry=0,this.cache=0}RangeStartDecode(e){for(var t=0;t<5;t++)this.code=(this.code<<8)+e.ReadByte();this.code&=4294967295,this.code>>>=0}RangeGetFrequency(e){return this.range=Math.floor(this.range/e),Math.floor(this.code/this.range)}RangeDecode(e,t,r,n){for(this.code-=t*this.range,this.range*=r;this.range<1<<24;)this.range*=256,this.code=256*this.code+e.ReadByte()}RangeShiftLow(e){if(this.low<4278190080|this.carry){for(e.WriteByte(this.cache+this.carry);this.FFnum;)e.WriteByte(this.carry-1),this.FFnum--;this.cache=this.low>>>24,this.carry=0}else this.FFnum++;this.low<<=8,this.low>>>=0}RangeEncode(e,t,r,n){var i=this.low;for(this.range=Math.floor(this.range/n),this.low+=t*this.range,this.low>>>=0,this.range*=r,this.low<i&&(0!=this.carry&&console.log(\"ERROR: Multiple carry\"),this.carry=1);this.range<1<<24;)this.range*=256,this.RangeShiftLow(e)}RangeFinishEncode(e){for(var t=0;t<5;t++)this.RangeShiftLow(e)}}},576:e=>{e.exports=class{constructor(e=256){this.total_freq=e,this.max_sym=e-1,this.S=new Array,this.F=new Array;for(var t=0;t<=this.max_sym;t++)this.S[t]=t,this.F[t]=1}ModelDecode(e,t){for(var r=t.RangeGetFrequency(this.total_freq),n=0,i=0;n+this.F[i]<=r;)n+=this.F[i++];t.RangeDecode(e,n,this.F[i],this.total_freq),this.F[i]+=16,this.total_freq+=16,this.total_freq>65519&&this.ModelRenormalise();var o=this.S[i];if(i>0&&this.F[i]>this.F[i-1]){var s=this.F[i];this.F[i]=this.F[i-1],this.F[i-1]=s,s=this.S[i],this.S[i]=this.S[i-1],this.S[i-1]=s}return o}ModelRenormalise(){this.total_freq=0;for(var e=0;e<=this.max_sym;e++)this.F[e]-=Math.floor(this.F[e]/2),this.total_freq+=this.F[e]}ModelEncode(e,t,r){for(var n=0,i=0;this.S[i]!=r;i++)n+=this.F[i];if(t.RangeEncode(e,n,this.F[i],this.total_freq),this.F[i]+=16,this.total_freq+=16,this.total_freq>65519&&this.ModelRenormalise(),r=this.S[i],i>0&&this.F[i]>this.F[i-1]){var o=this.F[i];this.F[i]=this.F[i-1],this.F[i-1]=o,o=this.S[i],this.S[i]=this.S[i-1],this.S[i-1]=o}}}},5260:(e,t,r)=>{const n=r(9260),i=r(576),o=r(7381);function s(e,t,r){for(var n=0,i=0,o=-1,s=new Array(1024);i<r;){var a=e.ReadByte();if(s[n++]=a,i+=a,a==o){var f=e.ReadByte();for(i+=a*f;f--;)s[n++]=a}o=a}var h=0;for(n=0,i=0;i<r;){var l=0;do{var u=s[n++];l+=u}while(255==u);for(;l--;)t[i++]=h;h++}}function a(e,t,r){var n=e.context;return t.qctx=(t.qctx<<e.qshift)+e.qtab[r],n+=(t.qctx&(1<<e.qbits)-1)<<e.qloc,e.do_pos&&(n+=e.ptab[Math.min(t.p,1023)]<<e.ploc),e.do_delta&&(n+=e.dtab[Math.min(t.delta,255)]<<e.dloc,t.delta+=t.prevq!=r?1:0,t.prevq=r),e.do_sel&&(n+=t.s<<e.sloc),t.p--,65535&n}function f(e){var t={};t.context=e.ReadUint16(),t.pflags=e.ReadByte(),t.do_dedup=2&t.pflags,t.fixed_len=4&t.pflags,t.do_sel=8&t.pflags,t.do_qmap=16&t.pflags,t.do_pos=32&t.pflags,t.do_delta=64&t.pflags,t.do_qtab=128&t.pflags,t.max_sym=e.ReadByte();var r=e.ReadByte();if(t.qbits=r>>4,t.qshift=15&r,r=e.ReadByte(),t.qloc=r>>4,t.sloc=15&r,r=e.ReadByte(),t.ploc=r>>4,t.dloc=15&r,t.qmap=new Array(256),16&t.pflags)for(var n=0;n<t.max_sym;n++)t.qmap[n]=e.ReadByte();else for(n=0;n<256;n++)t.qmap[n]=n;if(t.qtab=new Array(1024),t.qbits>0&&128&t.pflags)s(e,t.qtab,256);else for(n=0;n<256;n++)t.qtab[n]=n;return t.ptab=new Array(1024),32&t.pflags&&s(e,t.ptab,1024),t.dtab=new Array(256),64&t.pflags&&s(e,t.dtab,256),t}function h(e,t,r,n,i,o){r.max_sel>0?i.s=n.sel.ModelDecode(e,t):i.s=0,i.x=r.stab[i.s];var s=r.params[i.x];if(s.fixed_len>=0){var a=n.len[0].ModelDecode(e,t);a|=n.len[1].ModelDecode(e,t)<<8,a|=n.len[2].ModelDecode(e,t)<<16,a|=n.len[3].ModelDecode(e,t)<<24,s.fixed_len>0&&(s.fixed_len=-a)}else a=-s.fixed_len;i.len=a,r.do_rev&&(o[i.rec]=n.rev.ModelDecode(e,t)),i.is_dup=0,2&s.pflags&&n.dup.ModelDecode(e,t)&&(i.is_dup=1),i.p=a,i.delta=0,i.qctx=0,i.prevq=0,i.rec++}function l(e,t,r){for(var n=0,i=0,o=new Array(2*r),s=0;n<r;){for(var a=n;n<r&&t[n]==i;)n++;var f=n-a;do{var h=Math.min(255,f);o[s++]=h,f-=h}while(255==h);i++}var l=-1,u=new Array(2*r),c=0;for(n=0;n<s;){var d=o[n++];if(u[c++]=d,d==l){for(a=n;n<s&&o[n]==l&&n-a<255;)n++;u[c++]=n-a}else l=d}e.WriteData(u,c)}e.exports={decode:function(e,t){return function(e,t){var r=e.ReadUint7(),n=function(e){var t={max_sym:0};if(5==e.ReadByte()){var r=e.ReadByte(),n=1&r?e.ReadByte():1,i=r.nparam>1?r.nparam-1:0,o=new Array(256);if(2&r)i=e.ReadByte(),s(e,o,256);else{for(var a=0;a<n;a++)o[a]=a;for(;a<256;a++)o[a]=n-1}t.do_rev=4&r,t.stab=o,t.max_sel=i,t.params=new Array(t.nparam);for(var h=0;h<n;h++)t.params[h]=f(e),t.max_sym<t.params[h].max_sym&&(t.max_sym=t.params[h].max_sym);return t}console.error(\"Invalid FQZComp version number\")}(e);if(n){var l=n.params,u=new Array(t.length),c=function(e){var t={};t.qual=new Array(65536);for(var r=0;r<65536;r++)t.qual[r]=new i(e.max_sym+1);for(t.len=new Array(4),r=0;r<4;r++)t.len[r]=new i(256);return t.rev=new i(2),t.dup=new i(2),e.max_sel>0&&(t.sel=new i(e.max_sel+1)),t}(n),d=new o(e);d.RangeStartDecode(e);for(var p=new Buffer.allocUnsafe(r),g={qctx:0,prevq:0,delta:0,p:0,s:0,x:0,len:0,is_dup:0,rec:0},m=0;m<r;){if(0==g.p){if(h(e,d,n,c,g,u),g.is_dup>0&&c.dup.ModelDecode(e,d)){for(var y=0;y<len;y++)p[m+y]=p[m+y-g.len];m+=g.len,g.p=0;continue}t.push(g.len);var b=(l=n.params[g.x]).context}var v=c.qual[b].ModelDecode(e,d);p[m++]=l.qmap[v],b=a(l,g,v)}return n.do_rev&&function(e,t,r,n){for(var i=0,o=0;o<t;){if(r[i])for(var s=0,a=n[i]-1;s<a;){var f=e[o+s];e[o+s]=e[o+a],e[o+a]=f,s++,a--}o+=n[i++]}}(p,r,u,t),p}}(new n(e),t)},encode:function(e,t,r){for(var s=new Array(2),a=new Array(2),f=new Array(2),h=new Array(2),u=new Array(256),c=0;c<2;c++)s[c]=new Array(256),a[c]=new Array(256),f[c]=new Array(1024),h[c]=new Array(256);(p=new n(\"\",0,1.1*e.length+100)).WriteUint7(e.length);var d=function(e,t,r,n){for(var i=r[0],o=0;o<r.length&&r[o]==i;o++);var s=o==r.length?1:0,a=0,f=0;for(o=0;o<256;o++)n[0][o]=0;var h=0,l=0;for(o=0;o<e.length;o++)0==l&&(l=t[h<t.length-1?h++:h]),n[0][e[o]]++,l--;for(o=0;o<256;o++)n[0][o]&&(f<o&&(f=o),a++);var u=5,c=0;return a<=16&&(c=1,u=a<=2?1:a<=4?2:a<=8?3:4),[{qbits:8+(u>4),qshift:u,qloc:7,pbits:7,pshift:t[0]>128?1:0,ploc:0,dbits:u>4?0:1,dshift:3,dloc:15,sbits:0,sloc:15,do_stab:0,context:0,max_sym:f,nsym:a,do_qmap:c,do_dedup:0,fixed_len:1==t.length?1:0,do_sel:0,do_rev:0,do_pos:1,do_delta:u<=4?1:0,do_qtab:0,qbits:8+(u>4)-(0==s),sbits:1,sloc:15-(u<=4),do_stab:1,do_sel:1}]}(e,t,r,s),p=function(e,t,r,n,i,o,s){for(var a=[0,1,1,1,2,2,2,2,2,3,3,3,3,3,3,3,4,4,4,4,4,4,4,4,4,5,5,5,5,5,5,5,5,5,5,5,6,6,6,6,6,6,6,6,6,6,6,6,6,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7],f=0;f<t.length;f++)s[f]=f;for(;f<256;f++)s[f]=t.length-1;e.WriteByte(5);var h=(t.length>1?1:0)|(t[0].do_stab?2:0);if(e.WriteByte(h),1&h&&e.WriteByte(t.length),2&h){var u=1<<t[0].sbits;u>0&&u--,e.WriteByte(u),l(e,s,256)}for(var c=0;c<t.length;c++){if(e.WriteUint16(t[c].context),e.WriteByte((t[c].do_qtab?128:0)|(t[c].do_delta?64:0)|(t[c].do_pos?32:0)|(t[c].do_qmap?16:0)|(t[c].do_sel?8:0)|(t[c].fixed_len?4:0)|(t[c].do_dedup?2:0)),t[c].do_qmap?e.WriteByte(t[c].nsym):e.WriteByte(t[c].max_sym),e.WriteByte(t[c].qbits<<4|t[c].qshift),e.WriteByte(t[c].qloc<<4|t[c].sloc),e.WriteByte(t[c].ploc<<4|t[c].dloc),t[c].do_qmap){t[c].max_sym=t[c].nsym;var d=0;for(f=0;f<256;f++)r[c][f]&&(e.WriteByte(f),r[c][f]=d++);for(;d<t[c].nsym;d++)e.WriteByte(0)}else for(f=0;f<256;f++)r[c][f]=f;if(t[c].qbits>0){for(f=0;f<256;f++)n[c][f]=f;t[c].do_qtab&&l(e,n[c],256)}if(t[c].pbits>0){for(f=0;f<1024;f++)i[c][f]=Math.min((1<<t[c].pbits)-1,f>>t[c].pshift);l(e,i[c],1024)}if(t[c].dbits>0){for(f=0;f<256;f++)a[f]>(1<<t[c].dbits)-1&&(a[f]=(1<<t[c].dbits)-1);for(f=0;f<256;f++)o[c][f]=a[Math.min(a.length-1,f>>t[c].dshift)];l(e,o[c],256)}}return e}(p,d,s,a,f,h,u);return function(e,t,r,n,s,a,f,h,l,u){var c=1<<s[0].sbits;c>0&&c--;for(var d=t.length,p=0,g=0;g<s.length;g++)p<s[g].max_sym&&(p=s[g].max_sym);for(var m=new Array(65536),y=0;y<65536;y++)m[y]=new i(p+1);var b=new Array(4);for(y=0;y<4;y++)b[y]=new i(256);new i(2),new i(2);for(var v=new i(c+1),w=new o(t),_=(g=0,y=0,0);y<d;){if(0==g){var B=n[_];s[0].sbits>0&&v.ModelEncode(e,w,B);var E=u[B],S=r[Math.min(r.length-1,_++)];s[E].fixed_len?s[E].fixed_len>0&&(b[0].ModelEncode(e,w,255&S),b[1].ModelEncode(e,w,S>>8&255),b[2].ModelEncode(e,w,S>>16&255),b[3].ModelEncode(e,w,S>>24&255),s[E].fixed_len=-1):(b[0].ModelEncode(e,w,255&S),b[1].ModelEncode(e,w,S>>8&255),b[2].ModelEncode(e,w,S>>16&255),b[3].ModelEncode(e,w,S>>24&255)),s[E].do_dedup&&process.exit(1),g=S;var A=0,C=s[E].context,R=0,k=0}var x=t[y++],I=a[E][x];m[C].ModelEncode(e,w,I),R=(R<<s[E].qshift)+f[E][I],C=s[E].context,C+=(R&(1<<s[E].qbits)-1)<<s[E].qloc,s[E].pbits>0&&(C+=h[E][Math.min(g,1023)]<<s[E].ploc),s[E].dbits>0&&(C+=l[E][Math.min(A,255)]<<s[E].dloc,A+=k!=I?1:0,k=I),s[E].do_sel&&(C+=B<<s[E].sloc),C&=65535,g--}return w.RangeFinishEncode(e),e.buf.slice(0,e.pos)}(p,e,t,r,d,s,a,f,h,u)}}},3498:(e,t,r)=>{\"use strict\";var n=r(4459),i=r(594),o=r(445),s=r(5260),a=r(2881);e.exports={r4x8_uncompress:function(e,t){n.decode(e).copy(t,0,0)},r4x16_uncompress:function(e,t){i.decode(e).copy(t,0,0)},arith_uncompress:function(e,t){o.decode(e).copy(t,0,0)},fqzcomp_uncompress:function(e,t){var r=new Array;s.decode(e,r).copy(t,0,0)},tok3_uncompress:function(e,t){var r=a.decode(e,0,\"\\0\");Buffer.from(r,\"binary\").copy(t,0,0)}}},9260:e=>{e.exports=class{constructor(e,t=0,r=0){0!=r?(this.buf=Buffer.allocUnsafe(r),this.length=r):(this.buf=e,this.length=e.length),this.pos=t}EOF(){return this.pos>=this.length}ReadData(e){var t=this.buf.slice(this.pos,this.pos+e);return this.pos+=e,t}ReadByte(){const e=this.buf[this.pos];return this.pos++,e}ReadChar(){const e=this.buf[this.pos];return this.pos++,String.fromCharCode(e)}ReadUint16(){return this.ReadByte()|this.ReadByte()<<8}ReadUint32(){const e=this.buf.readInt32LE(this.pos);return this.pos+=4,e}ReadString(){var e=\"\";do{var t=this.buf[this.pos++];t&&(e+=String.fromCharCode(t))}while(t);return e}ReadUint7(){var e=0;do{var t=this.ReadByte();e=e<<7|127&t}while(128&t);return e}ReadITF8(){var e=this.buf[this.pos];return this.pos++,e>=240?(e=(15&e)<<28,e+=(this.buf[this.pos+0]<<20)+(this.buf[this.pos+1]<<12)+(this.buf[this.pos+2]<<4)+(this.buf[this.pos+3]>>4),this.pos+=4):e>=224?(e=(15&e)<<24,e+=(this.buf[this.pos+0]<<16)+(this.buf[this.pos+1]<<8)+(this.buf[this.pos+2]<<0),this.pos+=3):e>=192?(e=(31&e)<<16,e+=(this.buf[this.pos+0]<<8)+(this.buf[this.pos+1]<<0),this.pos+=2):e>=128&&(e=(63&e)<<8,e+=this.buf[this.pos],this.pos++),e}WriteByte(e){this.buf[this.pos++]=e}WriteChar(e){this.buf[this.pos++]=e.charCodeAt(0)}WriteString(e){for(var t=0;t<e.length;t++)this.buf[this.pos++]=e.charCodeAt(t);this.buf[this.pos++]=0}WriteData(e,t){for(var r=0;r<t;r++)this.buf[this.pos++]=e[r]}WriteStream(e){this.WriteData(e.buf,e.pos)}WriteUint16(e){this.WriteByte(255&e),this.WriteByte(e>>8&255)}WriteUint32(e){this.buf.writeInt32LE(e,this.pos),this.pos+=4}WriteUint7(e){var t=0,r=e;do{t+=7,r>>=7}while(r>0);do{t-=7,this.WriteByte((e>>t&127)+((t>0)<<7))}while(t>0)}WriteITF8(e){e<0&&(e=1+e),e<=127?this.buf[this.pos++]=e:e<=16383?(this.buf[this.pos++]=128|Math.floor(e/256),this.buf[this.pos++]=255&e):e<131071?(this.buf[this.pos++]=192|Math.floor(e/65536),this.buf[this.pos++]=255&Math.floor(e/256),this.buf[this.pos++]=255&e):e<268435455?(this.buf[this.pos++]=224|Math.floor(e/16777216),this.buf[this.pos++]=255&Math.floor(e/65536),this.buf[this.pos++]=255&Math.floor(e/256),this.buf[this.pos++]=255&e):(this.buf[this.pos++]=240|Math.floor(e/268435456),this.buf[this.pos++]=255&Math.floor(e/1048576),this.buf[this.pos++]=255&Math.floor(e/4096),this.buf[this.pos++]=255&Math.floor(e/4),this.buf[this.pos++]=15&e)}WriteByteNeg(e){this.buf[--this.pos]=e}}},4459:(e,t,r)=>{const n=r(9260);function i(e){return 4095&e}function o(e,t){for(var r=0;t>=e[r+1];)r++;return r}function s(e){for(var t=new Array(4096),r=0,n=0;n<4096;n++){for(;n>=e[r+1];)r++;t[n]=r}return t}function a(e,t,r){return r*(e>>12)+(4095&e)-t}function f(e,t){for(;t<1<<23;)t=(t<<8)+e.ReadByte();return t}function h(e,t){t.WriteByteNeg(e>>24&255),t.WriteByteNeg(e>>16&255),t.WriteByteNeg(e>>8&255),t.WriteByteNeg(e>>0&255)}function l(e,t,r,n,i){return e=function(e,t,r,n){for(var i=(1<<23>>n<<8)*r;e>=i;)t.WriteByteNeg(255&e),e>>=8;return e}(e,t,n,i),(Math.floor(e/n)<<i)+e%n+r}function u(e,t,r){for(var n=0;n<256;n++)t[n]=0;var i=e.ReadByte(),o=i,s=0;do{var a=e.ReadITF8();t[i]=a,s>0?(s--,i++):(i=e.ReadByte())==o+1&&(s=e.ReadByte()),o=i}while(0!=i);for(r[0]=0,n=0;n<=255;n++)r[n+1]=r[n]+t[n]}function c(e){for(var t=0,r=0;r<256;r++)t+=e[r];const n=4096;var i=n/t;do{var o=0,s=0,a=0;for(t=0,r=0;r<256;r++)0!=e[r]&&(o<e[r]&&(o=e[r],s=r),e[r]=Math.floor(e[r]*i),0==e[r]&&(e[r]=1),t+=e[r]);t<n?e[s]+=n-t:t-n<e[s]/2&&e[s]>2?e[s]-=t-n:t!=n&&(i*=.99,a=1)}while(a)}function d(e,t){for(var r=0,n=0;n<256;n++)if(t[n]){if(r>0)r--;else if(e.WriteByte(n),n>0&&t[n-1]>0){for(r=n+1;r<256&&t[r];r++);r-=n+1,e.WriteByte(r)}e.WriteITF8(t[n])}e.WriteByte(0)}e.exports={decode:function(e){var t=new n(e),r=t.ReadByte(),h=(t.ReadUint32(),t.ReadUint32());return 0==r?function(e,t){var r=new Array(256),n=new Array(256);u(e,r,n);for(var o=s(n),h=new Array(4),l=0;l<4;l++)h[l]=e.ReadUint32();var c=new Buffer.allocUnsafe(t);for(l=0;l<t;l++){var d=l%4,p=o[i(h[d])];c[l]=p,h[d]=a(h[d],n[p],r[p]),h[d]=f(e,h[d])}return c}(t,h):function(e,t){var r=new Array(256),n=new Array(256);!function(e,t,r){for(var n=0;n<256;n++){t[n]=new Array(256),r[n]=new Array(256);for(var i=0;i<256;i++)t[n][i]=0}var o=e.ReadByte(),s=o,a=0;do{u(e,t[o],r[o]),a>0?(a--,o++):(o=e.ReadByte())==s+1&&(a=e.ReadByte()),s=o}while(0!=o)}(e,r,n);for(var h=new Array(256),l=0;l<256;l++)h[l]=s(n[l]);for(var c=new Array(4),d=new Array(4),p=0;p<4;p++)c[p]=e.ReadUint32(),d[p]=0;var g=new Buffer.allocUnsafe(t),m=Math.floor(t/4);for(l=0;l<m;l++)for(p=0;p<4;p++){var 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i.status=73;if(73===i.status)if(i.gzhead.name){s=i.pending;do{if(i.pending===i.pending_buf_size&&(i.gzhead.hcrc&&i.pending>s&&(e.adler=a(e.adler,i.pending_buf,i.pending-s,s)),b(e),s=i.pending,i.pending===i.pending_buf_size)){f=1;break}f=i.gzindex<i.gzhead.name.length?255&i.gzhead.name.charCodeAt(i.gzindex++):0,w(i,f)}while(0!==f);i.gzhead.hcrc&&i.pending>s&&(e.adler=a(e.adler,i.pending_buf,i.pending-s,s)),0===f&&(i.gzindex=0,i.status=91)}else i.status=91;if(91===i.status)if(i.gzhead.comment){s=i.pending;do{if(i.pending===i.pending_buf_size&&(i.gzhead.hcrc&&i.pending>s&&(e.adler=a(e.adler,i.pending_buf,i.pending-s,s)),b(e),s=i.pending,i.pending===i.pending_buf_size)){f=1;break}f=i.gzindex<i.gzhead.comment.length?255&i.gzhead.comment.charCodeAt(i.gzindex++):0,w(i,f)}while(0!==f);i.gzhead.hcrc&&i.pending>s&&(e.adler=a(e.adler,i.pending_buf,i.pending-s,s)),0===f&&(i.status=c)}else 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i.last_flush=-1,0}return 4!==t?0:i.wrap<=0?1:(2===i.wrap?(w(i,255&e.adler),w(i,e.adler>>8&255),w(i,e.adler>>16&255),w(i,e.adler>>24&255),w(i,255&e.total_in),w(i,e.total_in>>8&255),w(i,e.total_in>>16&255),w(i,e.total_in>>24&255)):(_(i,e.adler>>>16),_(i,65535&e.adler)),b(e),i.wrap>0&&(i.wrap=-i.wrap),0!==i.pending?0:1)},t.deflateEnd=function(e){var t;return e&&e.state?42!==(t=e.state.status)&&69!==t&&73!==t&&91!==t&&t!==c&&t!==d&&t!==p?g(e,h):(e.state=null,t===d?g(e,-3):0):h},t.deflateSetDictionary=function(e,t){var r,n,o,a,f,l,u,c,d=t.length;if(!e||!e.state)return h;if(2===(a=(r=e.state).wrap)||1===a&&42!==r.status||r.lookahead)return h;for(1===a&&(e.adler=s(e.adler,t,d,0)),r.wrap=0,d>=r.w_size&&(0===a&&(y(r.head),r.strstart=0,r.block_start=0,r.insert=0),c=new i.Buf8(r.w_size),i.arraySet(c,t,d-r.w_size,r.w_size,0),t=c,d=r.w_size),f=e.avail_in,l=e.next_in,u=e.input,e.avail_in=d,e.next_in=0,e.input=t,S(r);r.lookahead>=3;){n=r.strstart,o=r.lookahead-2;do{r.ins_h=(r.ins_h<<r.hash_shift^r.window[n+3-1])&r.hash_mask,r.prev[n&r.w_mask]=r.head[r.ins_h],r.head[r.ins_h]=n,n++}while(--o);r.strstart=n,r.lookahead=2,S(r)}return r.strstart+=r.lookahead,r.block_start=r.strstart,r.insert=r.lookahead,r.lookahead=0,r.match_length=r.prev_length=2,r.match_available=0,e.next_in=l,e.input=u,e.avail_in=f,r.wrap=a,0},t.deflateInfo=\"pako deflate (from Nodeca project)\"},2401:e=>{\"use strict\";e.exports=function(){this.text=0,this.time=0,this.xflags=0,this.os=0,this.extra=null,this.extra_len=0,this.name=\"\",this.comment=\"\",this.hcrc=0,this.done=!1}},4264:e=>{\"use strict\";e.exports=function(e,t){var r,n,i,o,s,a,f,h,l,u,c,d,p,g,m,y,b,v,w,_,B,E,S,A,C;r=e.state,n=e.next_in,A=e.input,i=n+(e.avail_in-5),o=e.next_out,C=e.output,s=o-(t-e.avail_out),a=o+(e.avail_out-257),f=r.dmax,h=r.wsize,l=r.whave,u=r.wnext,c=r.window,d=r.hold,p=r.bits,g=r.lencode,m=r.distcode,y=(1<<r.lenbits)-1,b=(1<<r.distbits)-1;e:do{p<15&&(d+=A[n++]<<p,p+=8,d+=A[n++]<<p,p+=8),v=g[d&y];t:for(;;){if(d>>>=w=v>>>24,p-=w,0==(w=v>>>16&255))C[o++]=65535&v;else{if(!(16&w)){if(0==(64&w)){v=g[(65535&v)+(d&(1<<w)-1)];continue t}if(32&w){r.mode=12;break e}e.msg=\"invalid literal/length code\",r.mode=30;break e}_=65535&v,(w&=15)&&(p<w&&(d+=A[n++]<<p,p+=8),_+=d&(1<<w)-1,d>>>=w,p-=w),p<15&&(d+=A[n++]<<p,p+=8,d+=A[n++]<<p,p+=8),v=m[d&b];r:for(;;){if(d>>>=w=v>>>24,p-=w,!(16&(w=v>>>16&255))){if(0==(64&w)){v=m[(65535&v)+(d&(1<<w)-1)];continue r}e.msg=\"invalid distance code\",r.mode=30;break e}if(B=65535&v,p<(w&=15)&&(d+=A[n++]<<p,(p+=8)<w&&(d+=A[n++]<<p,p+=8)),(B+=d&(1<<w)-1)>f){e.msg=\"invalid distance too far back\",r.mode=30;break 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c(){this.mode=0,this.last=!1,this.wrap=0,this.havedict=!1,this.flags=0,this.dmax=0,this.check=0,this.total=0,this.head=null,this.wbits=0,this.wsize=0,this.whave=0,this.wnext=0,this.window=null,this.hold=0,this.bits=0,this.length=0,this.offset=0,this.extra=0,this.lencode=null,this.distcode=null,this.lenbits=0,this.distbits=0,this.ncode=0,this.nlen=0,this.ndist=0,this.have=0,this.next=null,this.lens=new n.Buf16(320),this.work=new n.Buf16(288),this.lendyn=null,this.distdyn=null,this.sane=0,this.back=0,this.was=0}function d(e){var t;return e&&e.state?(t=e.state,e.total_in=e.total_out=t.total=0,e.msg=\"\",t.wrap&&(e.adler=1&t.wrap),t.mode=1,t.last=0,t.havedict=0,t.dmax=32768,t.head=null,t.hold=0,t.bits=0,t.lencode=t.lendyn=new n.Buf32(852),t.distcode=t.distdyn=new n.Buf32(592),t.sane=1,t.back=-1,0):f}function p(e){var t;return e&&e.state?((t=e.state).wsize=0,t.whave=0,t.wnext=0,d(e)):f}function g(e,t){var r,n;return 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n.Buf8(s.wsize)),i>=s.wsize?(n.arraySet(s.window,t,r-s.wsize,s.wsize,0),s.wnext=0,s.whave=s.wsize):((o=s.wsize-s.wnext)>i&&(o=i),n.arraySet(s.window,t,r-i,o,s.wnext),(i-=o)?(n.arraySet(s.window,t,r-i,i,0),s.wnext=i,s.whave=s.wsize):(s.wnext+=o,s.wnext===s.wsize&&(s.wnext=0),s.whave<s.wsize&&(s.whave+=o))),0}t.inflateReset=p,t.inflateReset2=g,t.inflateResetKeep=d,t.inflateInit=function(e){return m(e,15)},t.inflateInit2=m,t.inflate=function(e,t){var r,c,d,p,g,m,y,b,v,B,E,S,A,C,R,k,x,I,M,F,O,T,U,P,N=0,L=new n.Buf8(4),z=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15];if(!e||!e.state||!e.output||!e.input&&0!==e.avail_in)return f;(r=e.state).mode===h&&(r.mode=13),g=e.next_out,d=e.output,y=e.avail_out,p=e.next_in,c=e.input,m=e.avail_in,b=r.hold,v=r.bits,B=m,E=y,T=0;e:for(;;)switch(r.mode){case 1:if(0===r.wrap){r.mode=13;break}for(;v<16;){if(0===m)break 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e;m--,b+=c[p++]<<v,v+=8}r.head&&(r.head.time=b),512&r.flags&&(L[0]=255&b,L[1]=b>>>8&255,L[2]=b>>>16&255,L[3]=b>>>24&255,r.check=o(r.check,L,4,0)),b=0,v=0,r.mode=4;case 4:for(;v<16;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}r.head&&(r.head.xflags=255&b,r.head.os=b>>8),512&r.flags&&(L[0]=255&b,L[1]=b>>>8&255,r.check=o(r.check,L,2,0)),b=0,v=0,r.mode=5;case 5:if(1024&r.flags){for(;v<16;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}r.length=b,r.head&&(r.head.extra_len=b),512&r.flags&&(L[0]=255&b,L[1]=b>>>8&255,r.check=o(r.check,L,2,0)),b=0,v=0}else r.head&&(r.head.extra=null);r.mode=6;case 6:if(1024&r.flags&&((S=r.length)>m&&(S=m),S&&(r.head&&(O=r.head.extra_len-r.length,r.head.extra||(r.head.extra=new Array(r.head.extra_len)),n.arraySet(r.head.extra,c,p,S,O)),512&r.flags&&(r.check=o(r.check,c,S,p)),m-=S,p+=S,r.length-=S),r.length))break e;r.length=0,r.mode=7;case 7:if(2048&r.flags){if(0===m)break e;S=0;do{O=c[p+S++],r.head&&O&&r.length<65536&&(r.head.name+=String.fromCharCode(O))}while(O&&S<m);if(512&r.flags&&(r.check=o(r.check,c,S,p)),m-=S,p+=S,O)break e}else r.head&&(r.head.name=null);r.length=0,r.mode=8;case 8:if(4096&r.flags){if(0===m)break e;S=0;do{O=c[p+S++],r.head&&O&&r.length<65536&&(r.head.comment+=String.fromCharCode(O))}while(O&&S<m);if(512&r.flags&&(r.check=o(r.check,c,S,p)),m-=S,p+=S,O)break e}else r.head&&(r.head.comment=null);r.mode=9;case 9:if(512&r.flags){for(;v<16;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}if(b!==(65535&r.check)){e.msg=\"header crc mismatch\",r.mode=l;break}b=0,v=0}r.head&&(r.head.hcrc=r.flags>>9&1,r.head.done=!0),e.adler=r.check=0,r.mode=h;break;case 10:for(;v<32;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}e.adler=r.check=u(b),b=0,v=0,r.mode=11;case 11:if(0===r.havedict)return e.next_out=g,e.avail_out=y,e.next_in=p,e.avail_in=m,r.hold=b,r.bits=v,2;e.adler=r.check=1,r.mode=h;case h:if(5===t||6===t)break e;case 13:if(r.last){b>>>=7&v,v-=7&v,r.mode=27;break}for(;v<3;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}switch(r.last=1&b,v-=1,3&(b>>>=1)){case 0:r.mode=14;break;case 1:if(w(r),r.mode=20,6===t){b>>>=2,v-=2;break e}break;case 2:r.mode=17;break;case 3:e.msg=\"invalid block type\",r.mode=l}b>>>=2,v-=2;break;case 14:for(b>>>=7&v,v-=7&v;v<32;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}if((65535&b)!=(b>>>16^65535)){e.msg=\"invalid stored block lengths\",r.mode=l;break}if(r.length=65535&b,b=0,v=0,r.mode=15,6===t)break e;case 15:r.mode=16;case 16:if(S=r.length){if(S>m&&(S=m),S>y&&(S=y),0===S)break e;n.arraySet(d,c,p,S,g),m-=S,p+=S,y-=S,g+=S,r.length-=S;break}r.mode=h;break;case 17:for(;v<14;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}if(r.nlen=257+(31&b),b>>>=5,v-=5,r.ndist=1+(31&b),b>>>=5,v-=5,r.ncode=4+(15&b),b>>>=4,v-=4,r.nlen>286||r.ndist>30){e.msg=\"too many length or distance symbols\",r.mode=l;break}r.have=0,r.mode=18;case 18:for(;r.have<r.ncode;){for(;v<3;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}r.lens[z[r.have++]]=7&b,b>>>=3,v-=3}for(;r.have<19;)r.lens[z[r.have++]]=0;if(r.lencode=r.lendyn,r.lenbits=7,U={bits:r.lenbits},T=a(0,r.lens,0,19,r.lencode,0,r.work,U),r.lenbits=U.bits,T){e.msg=\"invalid code lengths set\",r.mode=l;break}r.have=0,r.mode=19;case 19:for(;r.have<r.nlen+r.ndist;){for(;k=(N=r.lencode[b&(1<<r.lenbits)-1])>>>16&255,x=65535&N,!((R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}if(x<16)b>>>=R,v-=R,r.lens[r.have++]=x;else{if(16===x){for(P=R+2;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}if(b>>>=R,v-=R,0===r.have){e.msg=\"invalid bit length repeat\",r.mode=l;break}O=r.lens[r.have-1],S=3+(3&b),b>>>=2,v-=2}else if(17===x){for(P=R+3;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}v-=R,O=0,S=3+(7&(b>>>=R)),b>>>=3,v-=3}else{for(P=R+7;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}v-=R,O=0,S=11+(127&(b>>>=R)),b>>>=7,v-=7}if(r.have+S>r.nlen+r.ndist){e.msg=\"invalid bit length repeat\",r.mode=l;break}for(;S--;)r.lens[r.have++]=O}}if(r.mode===l)break;if(0===r.lens[256]){e.msg=\"invalid code -- missing end-of-block\",r.mode=l;break}if(r.lenbits=9,U={bits:r.lenbits},T=a(1,r.lens,0,r.nlen,r.lencode,0,r.work,U),r.lenbits=U.bits,T){e.msg=\"invalid literal/lengths set\",r.mode=l;break}if(r.distbits=6,r.distcode=r.distdyn,U={bits:r.distbits},T=a(2,r.lens,r.nlen,r.ndist,r.distcode,0,r.work,U),r.distbits=U.bits,T){e.msg=\"invalid distances set\",r.mode=l;break}if(r.mode=20,6===t)break e;case 20:r.mode=21;case 21:if(m>=6&&y>=258){e.next_out=g,e.avail_out=y,e.next_in=p,e.avail_in=m,r.hold=b,r.bits=v,s(e,E),g=e.next_out,d=e.output,y=e.avail_out,p=e.next_in,c=e.input,m=e.avail_in,b=r.hold,v=r.bits,r.mode===h&&(r.back=-1);break}for(r.back=0;k=(N=r.lencode[b&(1<<r.lenbits)-1])>>>16&255,x=65535&N,!((R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}if(k&&0==(240&k)){for(I=R,M=k,F=x;k=(N=r.lencode[F+((b&(1<<I+M)-1)>>I)])>>>16&255,x=65535&N,!(I+(R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}b>>>=I,v-=I,r.back+=I}if(b>>>=R,v-=R,r.back+=R,r.length=x,0===k){r.mode=26;break}if(32&k){r.back=-1,r.mode=h;break}if(64&k){e.msg=\"invalid literal/length code\",r.mode=l;break}r.extra=15&k,r.mode=22;case 22:if(r.extra){for(P=r.extra;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}r.length+=b&(1<<r.extra)-1,b>>>=r.extra,v-=r.extra,r.back+=r.extra}r.was=r.length,r.mode=23;case 23:for(;k=(N=r.distcode[b&(1<<r.distbits)-1])>>>16&255,x=65535&N,!((R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}if(0==(240&k)){for(I=R,M=k,F=x;k=(N=r.distcode[F+((b&(1<<I+M)-1)>>I)])>>>16&255,x=65535&N,!(I+(R=N>>>24)<=v);){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}b>>>=I,v-=I,r.back+=I}if(b>>>=R,v-=R,r.back+=R,64&k){e.msg=\"invalid distance code\",r.mode=l;break}r.offset=x,r.extra=15&k,r.mode=24;case 24:if(r.extra){for(P=r.extra;v<P;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}r.offset+=b&(1<<r.extra)-1,b>>>=r.extra,v-=r.extra,r.back+=r.extra}if(r.offset>r.dmax){e.msg=\"invalid distance too far back\",r.mode=l;break}r.mode=25;case 25:if(0===y)break e;if(S=E-y,r.offset>S){if((S=r.offset-S)>r.whave&&r.sane){e.msg=\"invalid distance too far back\",r.mode=l;break}S>r.wnext?(S-=r.wnext,A=r.wsize-S):A=r.wnext-S,S>r.length&&(S=r.length),C=r.window}else C=d,A=g-r.offset,S=r.length;S>y&&(S=y),y-=S,r.length-=S;do{d[g++]=C[A++]}while(--S);0===r.length&&(r.mode=21);break;case 26:if(0===y)break e;d[g++]=r.length,y--,r.mode=21;break;case 27:if(r.wrap){for(;v<32;){if(0===m)break e;m--,b|=c[p++]<<v,v+=8}if(E-=y,e.total_out+=E,r.total+=E,E&&(e.adler=r.check=r.flags?o(r.check,d,E,g-E):i(r.check,d,E,g-E)),E=y,(r.flags?b:u(b))!==r.check){e.msg=\"incorrect data check\",r.mode=l;break}b=0,v=0}r.mode=28;case 28:if(r.wrap&&r.flags){for(;v<32;){if(0===m)break e;m--,b+=c[p++]<<v,v+=8}if(b!==(4294967295&r.total)){e.msg=\"incorrect length check\",r.mode=l;break}b=0,v=0}r.mode=29;case 29:T=1;break e;case l:T=-3;break e;case 31:return-4;default:return f}return e.next_out=g,e.avail_out=y,e.next_in=p,e.avail_in=m,r.hold=b,r.bits=v,(r.wsize||E!==e.avail_out&&r.mode<l&&(r.mode<27||4!==t))&&_(e,e.output,e.next_out,E-e.avail_out)?(r.mode=31,-4):(B-=e.avail_in,E-=e.avail_out,e.total_in+=B,e.total_out+=E,r.total+=E,r.wrap&&E&&(e.adler=r.check=r.flags?o(r.check,d,E,e.next_out-E):i(r.check,d,E,e.next_out-E)),e.data_type=r.bits+(r.last?64:0)+(r.mode===h?128:0)+(20===r.mode||15===r.mode?256:0),(0===B&&0===E||4===t)&&0===T&&(T=-5),T)},t.inflateEnd=function(e){if(!e||!e.state)return f;var t=e.state;return t.window&&(t.window=null),e.state=null,0},t.inflateGetHeader=function(e,t){var r;return e&&e.state?0==(2&(r=e.state).wrap)?f:(r.head=t,t.done=!1,0):f},t.inflateSetDictionary=function(e,t){var r,n=t.length;return e&&e.state?0!==(r=e.state).wrap&&11!==r.mode?f:11===r.mode&&i(1,t,n,0)!==r.check?-3:_(e,t,n,n)?(r.mode=31,-4):(r.havedict=1,0):f},t.inflateInfo=\"pako inflate (from Nodeca project)\"},9241:(e,t,r)=>{\"use strict\";var n=r(4236),i=[3,4,5,6,7,8,9,10,11,13,15,17,19,23,27,31,35,43,51,59,67,83,99,115,131,163,195,227,258,0,0],o=[16,16,16,16,16,16,16,16,17,17,17,17,18,18,18,18,19,19,19,19,20,20,20,20,21,21,21,21,16,72,78],s=[1,2,3,4,5,7,9,13,17,25,33,49,65,97,129,193,257,385,513,769,1025,1537,2049,3073,4097,6145,8193,12289,16385,24577,0,0],a=[16,16,16,16,17,17,18,18,19,19,20,20,21,21,22,22,23,23,24,24,25,25,26,26,27,27,28,28,29,29,64,64];e.exports=function(e,t,r,f,h,l,u,c){var d,p,g,m,y,b,v,w,_,B=c.bits,E=0,S=0,A=0,C=0,R=0,k=0,x=0,I=0,M=0,F=0,O=null,T=0,U=new n.Buf16(16),P=new n.Buf16(16),N=null,L=0;for(E=0;E<=15;E++)U[E]=0;for(S=0;S<f;S++)U[t[r+S]]++;for(R=B,C=15;C>=1&&0===U[C];C--);if(R>C&&(R=C),0===C)return h[l++]=20971520,h[l++]=20971520,c.bits=1,0;for(A=1;A<C&&0===U[A];A++);for(R<A&&(R=A),I=1,E=1;E<=15;E++)if(I<<=1,(I-=U[E])<0)return-1;if(I>0&&(0===e||1!==C))return-1;for(P[1]=0,E=1;E<15;E++)P[E+1]=P[E]+U[E];for(S=0;S<f;S++)0!==t[r+S]&&(u[P[t[r+S]]++]=S);if(0===e?(O=N=u,b=19):1===e?(O=i,T-=257,N=o,L-=257,b=256):(O=s,N=a,b=-1),F=0,S=0,E=A,y=l,k=R,x=0,g=-1,m=(M=1<<R)-1,1===e&&M>852||2===e&&M>592)return 1;for(;;){v=E-x,u[S]<b?(w=0,_=u[S]):u[S]>b?(w=N[L+u[S]],_=O[T+u[S]]):(w=96,_=0),d=1<<E-x,A=p=1<<k;do{h[y+(F>>x)+(p-=d)]=v<<24|w<<16|_|0}while(0!==p);for(d=1<<E-1;F&d;)d>>=1;if(0!==d?(F&=d-1,F+=d):F=0,S++,0==--U[E]){if(E===C)break;E=t[r+u[S]]}if(E>R&&(F&m)!==g){for(0===x&&(x=R),y+=A,I=1<<(k=E-x);k+x<C&&!((I-=U[k+x])<=0);)k++,I<<=1;if(M+=1<<k,1===e&&M>852||2===e&&M>592)return 1;h[g=F&m]=R<<24|k<<16|y-l|0}}return 0!==F&&(h[y+F]=E-x<<24|64<<16|0),c.bits=R,0}},8898:e=>{\"use strict\";e.exports={2:\"need dictionary\",1:\"stream end\",0:\"\",\"-1\":\"file error\",\"-2\":\"stream error\",\"-3\":\"data error\",\"-4\":\"insufficient memory\",\"-5\":\"buffer error\",\"-6\":\"incompatible version\"}},342:(e,t,r)=>{\"use strict\";var n=r(4236);function i(e){for(var t=e.length;--t>=0;)e[t]=0}var o=[0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0],s=[0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13],a=[0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7],f=[16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15],h=new Array(576);i(h);var l=new Array(60);i(l);var u=new Array(512);i(u);var c=new Array(256);i(c);var d=new Array(29);i(d);var p,g,m,y=new Array(30);function b(e,t,r,n,i){this.static_tree=e,this.extra_bits=t,this.extra_base=r,this.elems=n,this.max_length=i,this.has_stree=e&&e.length}function v(e,t){this.dyn_tree=e,this.max_code=0,this.stat_desc=t}function w(e){return e<256?u[e]:u[256+(e>>>7)]}function _(e,t){e.pending_buf[e.pending++]=255&t,e.pending_buf[e.pending++]=t>>>8&255}function B(e,t,r){e.bi_valid>16-r?(e.bi_buf|=t<<e.bi_valid&65535,_(e,e.bi_buf),e.bi_buf=t>>16-e.bi_valid,e.bi_valid+=r-16):(e.bi_buf|=t<<e.bi_valid&65535,e.bi_valid+=r)}function E(e,t,r){B(e,r[2*t],r[2*t+1])}function S(e,t){var r=0;do{r|=1&e,e>>>=1,r<<=1}while(--t>0);return r>>>1}function A(e,t,r){var n,i,o=new Array(16),s=0;for(n=1;n<=15;n++)o[n]=s=s+r[n-1]<<1;for(i=0;i<=t;i++){var a=e[2*i+1];0!==a&&(e[2*i]=S(o[a]++,a))}}function C(e){var t;for(t=0;t<286;t++)e.dyn_ltree[2*t]=0;for(t=0;t<30;t++)e.dyn_dtree[2*t]=0;for(t=0;t<19;t++)e.bl_tree[2*t]=0;e.dyn_ltree[512]=1,e.opt_len=e.static_len=0,e.last_lit=e.matches=0}function R(e){e.bi_valid>8?_(e,e.bi_buf):e.bi_valid>0&&(e.pending_buf[e.pending++]=e.bi_buf),e.bi_buf=0,e.bi_valid=0}function k(e,t,r,n){var i=2*t,o=2*r;return e[i]<e[o]||e[i]===e[o]&&n[t]<=n[r]}function x(e,t,r){for(var n=e.heap[r],i=r<<1;i<=e.heap_len&&(i<e.heap_len&&k(t,e.heap[i+1],e.heap[i],e.depth)&&i++,!k(t,n,e.heap[i],e.depth));)e.heap[r]=e.heap[i],r=i,i<<=1;e.heap[r]=n}function 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r,n,i,o,s,a,f=t.dyn_tree,h=t.max_code,l=t.stat_desc.static_tree,u=t.stat_desc.has_stree,c=t.stat_desc.extra_bits,d=t.stat_desc.extra_base,p=t.stat_desc.max_length,g=0;for(o=0;o<=15;o++)e.bl_count[o]=0;for(f[2*e.heap[e.heap_max]+1]=0,r=e.heap_max+1;r<573;r++)(o=f[2*f[2*(n=e.heap[r])+1]+1]+1)>p&&(o=p,g++),f[2*n+1]=o,n>h||(e.bl_count[o]++,s=0,n>=d&&(s=c[n-d]),a=f[2*n],e.opt_len+=a*(o+s),u&&(e.static_len+=a*(l[2*n+1]+s)));if(0!==g){do{for(o=p-1;0===e.bl_count[o];)o--;e.bl_count[o]--,e.bl_count[o+1]+=2,e.bl_count[p]--,g-=2}while(g>0);for(o=p;0!==o;o--)for(n=e.bl_count[o];0!==n;)(i=e.heap[--r])>h||(f[2*i+1]!==o&&(e.opt_len+=(o-f[2*i+1])*f[2*i],f[2*i+1]=o),n--)}}(e,t),A(o,h,e.bl_count)}function F(e,t,r){var n,i,o=-1,s=t[1],a=0,f=7,h=4;for(0===s&&(f=138,h=3),t[2*(r+1)+1]=65535,n=0;n<=r;n++)i=s,s=t[2*(n+1)+1],++a<f&&i===s||(a<h?e.bl_tree[2*i]+=a:0!==i?(i!==o&&e.bl_tree[2*i]++,e.bl_tree[32]++):a<=10?e.bl_tree[34]++:e.bl_tree[36]++,a=0,o=i,0===s?(f=138,h=3):i===s?(f=6,h=3):(f=7,h=4))}function 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v=r.pathname&&\"/\"===r.pathname.charAt(0),w=e.host||e.pathname&&\"/\"===e.pathname.charAt(0),_=w||v||r.host&&e.pathname,B=_,E=r.pathname&&r.pathname.split(\"/\")||[],S=(p=e.pathname&&e.pathname.split(\"/\")||[],r.protocol&&!y[r.protocol]);if(S&&(r.hostname=\"\",r.port=null,r.host&&(\"\"===E[0]?E[0]=r.host:E.unshift(r.host)),r.host=\"\",e.protocol&&(e.hostname=null,e.port=null,e.host&&(\"\"===p[0]?p[0]=e.host:p.unshift(e.host)),e.host=null),_=_&&(\"\"===p[0]||\"\"===E[0])),w)r.host=e.host||\"\"===e.host?e.host:r.host,r.hostname=e.hostname||\"\"===e.hostname?e.hostname:r.hostname,r.search=e.search,r.query=e.query,E=p;else if(p.length)E||(E=[]),E.pop(),E=E.concat(p),r.search=e.search,r.query=e.query;else if(!i.isNullOrUndefined(e.search))return S&&(r.hostname=r.host=E.shift(),(x=!!(r.host&&r.host.indexOf(\"@\")>0)&&r.host.split(\"@\"))&&(r.auth=x.shift(),r.host=r.hostname=x.shift())),r.search=e.search,r.query=e.query,i.isNull(r.pathname)&&i.isNull(r.search)||(r.path=(r.pathname?r.pathname:\"\")+(r.search?r.search:\"\")),r.href=r.format(),r;if(!E.length)return r.pathname=null,r.search?r.path=\"/\"+r.search:r.path=null,r.href=r.format(),r;for(var A=E.slice(-1)[0],C=(r.host||e.host||E.length>1)&&(\".\"===A||\"..\"===A)||\"\"===A,R=0,k=E.length;k>=0;k--)\".\"===(A=E[k])?E.splice(k,1):\"..\"===A?(E.splice(k,1),R++):R&&(E.splice(k,1),R--);if(!_&&!B)for(;R--;R)E.unshift(\"..\");!_||\"\"===E[0]||E[0]&&\"/\"===E[0].charAt(0)||E.unshift(\"\"),C&&\"/\"!==E.join(\"/\").substr(-1)&&E.push(\"\");var x,I=\"\"===E[0]||E[0]&&\"/\"===E[0].charAt(0);return S&&(r.hostname=r.host=I?\"\":E.length?E.shift():\"\",(x=!!(r.host&&r.host.indexOf(\"@\")>0)&&r.host.split(\"@\"))&&(r.auth=x.shift(),r.host=r.hostname=x.shift())),(_=_||r.host&&E.length)&&!I&&E.unshift(\"\"),E.length?r.pathname=E.join(\"/\"):(r.pathname=null,r.path=null),i.isNull(r.pathname)&&i.isNull(r.search)||(r.path=(r.pathname?r.pathname:\"\")+(r.search?r.search:\"\")),r.auth=e.auth||r.auth,r.slashes=r.slashes||e.slashes,r.href=r.format(),r},o.prototype.parseHost=function(){var e=this.host,t=a.exec(e);t&&(\":\"!==(t=t[0])&&(this.port=t.substr(1)),e=e.substr(0,e.length-t.length)),e&&(this.hostname=e)}},2502:e=>{\"use strict\";e.exports={isString:function(e){return\"string\"==typeof e},isObject:function(e){return\"object\"==typeof e&&null!==e},isNull:function(e){return null===e},isNullOrUndefined:function(e){return null==e}}},7067:()=>{}},t={};function r(n){var i=t[n];if(void 0!==i)return i.exports;var o=t[n]={id:n,loaded:!1,exports:{}};return e[n].call(o.exports,o,o.exports,r),o.loaded=!0,o.exports}r.n=e=>{var t=e&&e.__esModule?()=>e.default:()=>e;return r.d(t,{a:t}),t},r.d=(e,t)=>{for(var n in t)r.o(t,n)&&!r.o(e,n)&&Object.defineProperty(e,n,{enumerable:!0,get:t[n]})},r.g=function(){if(\"object\"==typeof globalThis)return globalThis;try{return this||new Function(\"return this\")()}catch(e){if(\"object\"==typeof window)return window}}(),r.o=(e,t)=>Object.prototype.hasOwnProperty.call(e,t),r.r=e=>{\"undefined\"!=typeof Symbol&&Symbol.toStringTag&&Object.defineProperty(e,Symbol.toStringTag,{value:\"Module\"}),Object.defineProperty(e,\"__esModule\",{value:!0})},r.nmd=e=>(e.paths=[],e.children||(e.children=[]),e);var n=r(5590);\n    //window.gmodCRAM=n\n    return n;\n};\n\nconst gmodCRAM = fn()\n\nexport default gmodCRAM\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2018 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport gmodCRAM from \"../vendor/cram-bundle.js\"\nimport AlignmentContainer from \"../bam/alignmentContainer.js\"\nimport BamUtils from \"../bam/bamUtils.js\"\nimport BamAlignment from \"../bam/bamAlignment.js\"\nimport AlignmentBlock from \"../bam/alignmentBlock.js\"\nimport {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\n\nconst READ_STRAND_FLAG = 0x10\nconst MATE_STRAND_FLAG = 0x20\n\nconst CRAM_MATE_STRAND_FLAG = 0x1\nconst CRAM_MATE_MAPPED_FLAG = 0x2\n\n/**\n * Class for reading a cram file.  Wraps the gMOD Cram package.\n *\n * @param config\n * @constructor\n */\nclass CramReader {\n\n    constructor(config, genome, browser) {\n\n        this.config = config\n        this.browser = browser\n        this.genome = genome\n\n        this.cramFile = new gmodCRAM.CramFile({\n            filehandle: new FileHandler(config.url, config),\n            seqFetch: config.seqFetch || seqFetch.bind(this),\n            checkSequenceMD5: config.checkSequenceMD5 !== undefined ? config.checkSequenceMD5 : true\n        })\n\n        const indexFileHandle = new FileHandler(config.indexURL, config)\n        this.indexedCramFile = new gmodCRAM.IndexedCramFile({\n            cram: this.cramFile,\n            index: new gmodCRAM.CraiIndex({\n                filehandle: indexFileHandle\n            }),\n            fetchSizeLimit: 30000000\n        })\n\n        BamUtils.setReaderDefaults(this, config)\n\n        function seqFetch(seqID, start, end) {\n\n            const sequence = this.genome.sequence\n            const genome = this.genome\n\n            return this.getHeader()\n                .then(function (header) {\n                    const chr = genome.getChromosomeName(header.chrNames[seqID])\n                    return sequence.getSequence(chr, start - 1, end)\n                })\n        }\n    }\n\n\n    /**\n     * Parse the sequence dictionary from the SAM header and build chr name tables.  This function\n     * is public so it can be unit tested.\n     *\n     * @returns {PromiseLike<chrName, chrToIndex, chrAliasTable}>}\n     */\n\n    async getHeader() {\n\n        if (!this.header) {\n            const genome = this.genome\n            const samHeader = await this.cramFile.getSamHeader()\n            const chrToIndex = {}\n            const chrNames = []\n            const chrAliasTable = {}\n            const readGroups = []\n\n            for (let line of samHeader) {\n                if ('SQ' === line.tag) {\n                    for (let d of line.data) {\n                        if (d.tag === \"SN\") {\n                            const seq = d.value\n                            chrToIndex[seq] = chrNames.length\n                            chrNames.push(seq)\n                            if (genome) {\n                                const alias = genome.getChromosomeName(seq)\n                                chrAliasTable[alias] = seq\n                            }\n                            break\n                        }\n                    }\n                } else if ('RG' === line.tag) {\n                    readGroups.push(line.data)\n                }\n            }\n\n            this.header = {\n                chrNames: chrNames,\n                chrToIndex: chrToIndex,\n                chrAliasTable: chrAliasTable,\n                readGroups: readGroups\n            }\n        }\n\n        return this.header\n    }\n\n    async readAlignments(chr, bpStart, bpEnd) {\n\n        const browser = this.browser\n        const header = await this.getHeader()\n        const queryChr = header.chrAliasTable.hasOwnProperty(chr) ? header.chrAliasTable[chr] : chr\n        const chrIdx = header.chrToIndex[queryChr]\n        const alignmentContainer = new AlignmentContainer(chr, bpStart, bpEnd, this.config)\n\n        if (chrIdx === undefined) {\n            return alignmentContainer\n\n        } else {\n\n            try {\n                const records = await this.indexedCramFile.getRecordsForRange(chrIdx, bpStart, bpEnd)\n\n                for (let record of records) {\n\n                    const refID = record.sequenceId\n                    const pos = record.alignmentStart\n                    const alignmentEnd = pos + record.lengthOnRef\n\n                    if (refID < 0) {\n                        continue   // unmapped read\n                    } else if (refID > chrIdx || pos > bpEnd) {\n                        return    // off right edge, we're done\n                    } else if (refID < chrIdx) {\n                        continue   // Sequence to left of start, not sure this is possible\n                    }\n                    if (alignmentEnd < bpStart) {\n                        continue\n                    }  // Record out-of-range \"to the left\", skip to next one\n\n                    const alignment = decodeCramRecord(record, header.chrNames)\n\n                    if (this.filter.pass(alignment)) {\n                        alignmentContainer.push(alignment)\n                    }\n                }\n\n                alignmentContainer.finish()\n                return alignmentContainer\n            } catch (error) {\n                let message = error.message\n                if (message && message.indexOf(\"MD5\") >= 0) {\n                    message = \"Sequence mismatch. Is this the correct genome for the loaded CRAM?\"\n                }\n                this.browser.alert.present(new Error(message))\n                throw error\n            }\n        }\n\n        function decodeCramRecord(record, chrNames) {\n\n            const alignment = new BamAlignment()\n\n            alignment.chr = chrNames[record.sequenceId]\n            alignment.start = record.alignmentStart - 1\n            alignment.lengthOnRef = record.lengthOnRef\n            alignment.flags = record.flags\n            alignment.strand = !(record.flags & READ_STRAND_FLAG)\n            alignment.fragmentLength = record.templateLength || record.templateSize\n            alignment.mq = record.mappingQuality\n            alignment.end = record.alignmentStart + record.lengthOnRef\n            alignment.readGroupId = record.readGroupId\n\n            if (record.mate && record.mate.sequenceId !== undefined) {\n                const strand = record.mate.flags !== undefined ?\n                    !(record.mate.flags & CRAM_MATE_STRAND_FLAG) :\n                    !(record.flags & MATE_STRAND_FLAG)\n\n                alignment.mate = {\n                    chr: chrNames[record.mate.sequenceId],\n                    position: record.mate.alignmentStart,\n                    strand: strand\n                }\n            }\n\n            alignment.seq = record.getReadBases()\n            alignment.qual = record.qualityScores\n            alignment.tagDict = record.tags\n            alignment.readName = record.readName\n\n            // TODO -- cigar encoded in tag?\n            // BamUtils.bam_tag2cigar(ba, blockEnd, p, lseq, alignment, cigarArray);\n\n            makeBlocks(record, alignment)\n\n            if (alignment.mate && alignment.start > alignment.mate.position && alignment.fragmentLength > 0) {\n                alignment.fragmentLength = -alignment.fragmentLength\n            }\n\n            BamUtils.setPairOrientation(alignment)\n\n            return alignment\n\n        }\n\n        function makeBlocks(cramRecord, alignment) {\n\n            const blocks = []\n            let insertions\n            let gaps\n            let basesUsed = 0\n            let cigarString = ''\n\n            alignment.scStart = alignment.start\n            alignment.scLengthOnRef = alignment.lengthOnRef\n\n            if (cramRecord.readFeatures) {\n\n                for (let feature of cramRecord.readFeatures) {\n\n                    const code = feature.code\n                    const data = feature.data\n                    const readPos = feature.pos - 1\n                    const refPos = feature.refPos - 1\n\n                    switch (code) {\n                        case 'S' :\n                        case 'I':\n                        case 'i':\n                        case 'N':\n                        case 'D':\n                            if (readPos > basesUsed) {\n                                const len = readPos - basesUsed\n                                blocks.push(new AlignmentBlock({\n                                    start: refPos - len,\n                                    seqOffset: basesUsed,\n                                    len: len,\n                                    type: 'M'\n                                }))\n                                basesUsed += len\n                                cigarString += len + 'M'\n                            }\n\n                            if ('S' === code) {\n                                let scPos = refPos\n                                alignment.scLengthOnRef += data.length\n                                if (readPos === 0) {\n                                    alignment.scStart -= data.length\n                                    scPos -= data.length\n                                }\n                                const len = data.length\n                                blocks.push(new AlignmentBlock({\n                                    start: scPos,\n                                    seqOffset: basesUsed,\n                                    len: len,\n                                    type: 'S'\n                                }))\n                                basesUsed += len\n                                cigarString += len + code\n                            } else if ('I' === code || 'i' === code) {\n                                if (insertions === undefined) {\n                                    insertions = []\n                                }\n                                const len = 'i' === code ? 1 : data.length\n                                insertions.push(new AlignmentBlock({\n                                    start: refPos,\n                                    len: len,\n                                    seqOffset: basesUsed,\n                                    type: 'I'\n                                }))\n                                basesUsed += len\n                                cigarString += len + code\n                            } else if ('D' === code || 'N' === code) {\n                                if (!gaps) {\n                                    gaps = []\n                                }\n                                gaps.push({\n                                    start: refPos,\n                                    len: data,\n                                    type: code\n                                })\n                                cigarString += data + code\n                            }\n                            break\n\n                        case 'H':\n                        case 'P':\n                            cigarString += data + code\n                            break\n                        default :\n                        //  Ignore\n                    }\n                }\n            }\n\n            // Last block\n            const len = cramRecord.readLength - basesUsed\n            if (len > 0) {\n                blocks.push(new AlignmentBlock({\n                    start: cramRecord.alignmentStart + cramRecord.lengthOnRef - len - 1,\n                    seqOffset: basesUsed,\n                    len: len,\n                    type: 'M'\n                }))\n\n                cigarString += len + 'M'\n            }\n\n            alignment.blocks = blocks\n            alignment.insertions = insertions\n            alignment.gaps = gaps\n            alignment.cigar = cigarString\n\n        }\n\n    }\n}\n\nclass FileHandler {\n\n    constructor(source, config) {\n        this.position = 0\n        this.url = source\n        this.config = config\n        this.cache = new BufferCache({\n            fetch: (start, length) => this._fetch(start, length),\n        })\n    }\n\n    async _fetch(position, length) {\n\n        const loadRange = {start: position, size: length}\n        this._stat = {size: undefined}\n        const arrayBuffer = await igvxhr.loadArrayBuffer(this.url, buildOptions(this.config, {range: loadRange}))\n        return Buffer.from(arrayBuffer)\n    }\n\n    async read(buffer, offset = 0, length = Infinity, position = 0) {\n        let readPosition = position\n        if (readPosition === null) {\n            readPosition = this.position\n            this.position += length\n        }\n        return this.cache.get(buffer, offset, length, position)\n    }\n\n    async readFile() {\n        const arrayBuffer = await igvxhr.loadArrayBuffer(this.url, buildOptions(this.config))\n        return Buffer.from(arrayBuffer)\n    }\n\n    async stat() {\n        if (!this._stat) {\n            const buf = Buffer.allocUnsafe(10)\n            await this.read(buf, 0, 10, 0)\n            if (!this._stat)\n                throw new Error(`unable to determine size of file at ${this.url}`)\n        }\n        return this._stat\n    }\n}\n\nclass BufferCache {\n\n    constructor({fetch, size = 10000000, chunkSize = 32768}) {\n\n        this.fetch = fetch\n        this.chunkSize = chunkSize\n        this.lruCache = new QuickLRU({maxSize: Math.floor(size / chunkSize)})\n    }\n\n    async get(outputBuffer, offset, length, position) {\n        if (outputBuffer.length < offset + length)\n            throw new Error('output buffer not big enough for request')\n\n        // calculate the list of chunks involved in this fetch\n        const firstChunk = Math.floor(position / this.chunkSize)\n        const lastChunk = Math.floor((position + length) / this.chunkSize)\n\n        // fetch them all as necessary\n        const fetches = new Array(lastChunk - firstChunk + 1)\n        for (let chunk = firstChunk; chunk <= lastChunk; chunk += 1) {\n            fetches[chunk - firstChunk] = this._getChunk(chunk).then(data => ({\n                data,\n                chunkNumber: chunk,\n            }))\n        }\n\n        // stitch together the response buffer using them\n        const chunks = await Promise.all(fetches)\n        const chunksOffset = position - chunks[0].chunkNumber * this.chunkSize\n        chunks.forEach(({data, chunkNumber}) => {\n            const chunkPositionStart = chunkNumber * this.chunkSize\n            let copyStart = 0\n            let copyEnd = this.chunkSize\n            let copyOffset =\n                offset + (chunkNumber - firstChunk) * this.chunkSize - chunksOffset\n\n            if (chunkNumber === firstChunk) {\n                copyOffset = offset\n                copyStart = chunksOffset\n            }\n            if (chunkNumber === lastChunk) {\n                copyEnd = position + length - chunkPositionStart\n            }\n\n            data.copy(outputBuffer, copyOffset, copyStart, copyEnd)\n        })\n    }\n\n    _getChunk(chunkNumber) {\n        const cachedPromise = this.lruCache.get(chunkNumber)\n        if (cachedPromise) return cachedPromise\n\n        const freshPromise = this.fetch(\n            chunkNumber * this.chunkSize,\n            this.chunkSize,\n        )\n        this.lruCache.set(chunkNumber, freshPromise)\n        return freshPromise\n    }\n}\n\n\n// From https://github.com/sindresorhus/quick-lru\n// MIT License\n//\n// Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)\n//\n// Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the \"Software\"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:\n//\n//     The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.\n//\n//     THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.\n\n'use strict'\n\nclass QuickLRU {\n    constructor(options = {}) {\n        if (!(options.maxSize && options.maxSize > 0)) {\n            throw new TypeError('`maxSize` must be a number greater than 0')\n        }\n\n        this.maxSize = options.maxSize\n        this.cache = new Map()\n        this.oldCache = new Map()\n        this._size = 0\n    }\n\n    _set(key, value) {\n        this.cache.set(key, value)\n        this._size++\n\n        if (this._size >= this.maxSize) {\n            this._size = 0\n            this.oldCache = this.cache\n            this.cache = new Map()\n        }\n    }\n\n    get(key) {\n        if (this.cache.has(key)) {\n            return this.cache.get(key)\n        }\n\n        if (this.oldCache.has(key)) {\n            const value = this.oldCache.get(key)\n            this._set(key, value)\n            return value\n        }\n    }\n\n    set(key, value) {\n        if (this.cache.has(key)) {\n            this.cache.set(key, value)\n        } else {\n            this._set(key, value)\n        }\n\n        return this\n    }\n\n    has(key) {\n        return this.cache.has(key) || this.oldCache.has(key)\n    }\n\n    peek(key) {\n        if (this.cache.has(key)) {\n            return this.cache.get(key)\n        }\n\n        if (this.oldCache.has(key)) {\n            return this.oldCache.get(key)\n        }\n    }\n\n    delete(key) {\n        const deleted = this.cache.delete(key)\n        if (deleted) {\n            this._size--\n        }\n\n        return this.oldCache.delete(key) || deleted\n    }\n\n    clear() {\n        this.cache.clear()\n        this.oldCache.clear()\n        this._size = 0\n    }\n\n    * keys() {\n        for (const [key] of this) {\n            yield key\n        }\n    }\n\n    * values() {\n        for (const [, value] of this) {\n            yield value\n        }\n    }\n\n    * [Symbol.iterator]() {\n        for (const item of this.cache) {\n            yield item\n        }\n\n        for (const item of this.oldCache) {\n            const [key] = item\n            if (!this.cache.has(key)) {\n                yield item\n            }\n        }\n    }\n\n    get size() {\n        let oldCacheSize = 0\n        for (const key of this.oldCache.keys()) {\n            if (!this.cache.has(key)) {\n                oldCacheSize++\n            }\n        }\n\n        return this._size + oldCacheSize\n    }\n}\n\nexport default CramReader\n\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport AlignmentContainer from \"../bam/alignmentContainer.js\"\nimport BamAlignment from \"../bam/bamAlignment.js\"\nimport AlignmentBlock from \"../bam/alignmentBlock.js\"\nimport {ga4ghGet, ga4ghSearch} from './ga4ghHelper.js'\nimport BamFilter from \"../bam/bamFilter.js\"\n\nvar CigarOperationTable = {\n    \"ALIGNMENT_MATCH\": \"M\",\n    \"INSERT\": \"I\",\n    \"DELETE\": \"D\",\n    \"SKIP\": \"N\",\n    \"CLIP_SOFT\": \"S\",\n    \"CLIP_HARD\": \"H\",\n    \"PAD\": \"P\",\n    \"SEQUENCE_MATCH\": \"=\",\n    \"SEQUENCE_MISMATCH\": \"X\"\n}\n\nconst Ga4ghAlignmentReader = function (config, genome) {\n\n    this.config = config\n    this.genome = genome\n    this.url = config.url\n    this.filter = new BamFilter(config.filter)\n    this.readGroupSetIds = config.readGroupSetIds\n    this.authKey = config.authKey   // Might be undefined or nill\n\n    this.samplingWindowSize = config.samplingWindowSize === undefined ? 100 : config.samplingWindowSize\n    this.samplingDepth = config.samplingDepth === undefined ? 1000 : config.samplingDepth\n    if (config.viewAsPairs) {\n        this.pairsSupported = true\n    } else {\n        this.pairsSupported = config.pairsSupported === undefined ? true : config.pairsSupported\n    }\n}\n\n\nGa4ghAlignmentReader.prototype.readAlignments = function (chr, bpStart, bpEnd) {\n\n    const genome = this.genome\n    const self = this\n\n    return getChrAliasTable()\n\n        .then(function (chrAliasTable) {\n\n            var queryChr = chrAliasTable.hasOwnProperty(chr) ? chrAliasTable[chr] : chr,\n                readURL = self.url + \"/reads/search\"\n\n            return ga4ghSearch({\n                url: readURL,\n                body: {\n                    \"readGroupSetIds\": [self.readGroupSetIds],\n                    \"referenceName\": queryChr,\n                    \"start\": bpStart,\n                    \"end\": bpEnd,\n                    \"pageSize\": \"10000\"\n                },\n                decode: decodeGa4ghReads,\n                results: new AlignmentContainer(chr, bpStart, bpEnd, self.config)\n            })\n        })\n\n\n    function getChrAliasTable() {\n\n        if (self.chrAliasTable) {\n\n            return Promise.resolve(self.chrAliasTable)\n\n        } else {\n\n            return self.readMetadata()\n\n                .then(function (json) {\n\n                    self.chrAliasTable = {}\n\n                    if (genome && json.readGroups && json.readGroups.length > 0) {\n\n                        var referenceSetId = json.readGroups[0].referenceSetId\n\n                        if (referenceSetId) {\n\n                            // Query for reference names to build an alias table (map of genome ref names -> dataset ref names)\n                            var readURL = self.url + \"/references/search\"\n\n                            return ga4ghSearch({\n                                url: readURL,\n                                body: {\n                                    \"referenceSetId\": referenceSetId\n                                },\n                                decode: function (j) {\n                                    return j.references\n                                }\n                            })\n                                .then(function (references) {\n\n\n                                    references.forEach(function (ref) {\n                                        var refName = ref.name,\n                                            alias = genome.getChromosomeName(refName)\n                                        self.chrAliasTable[alias] = refName\n                                    })\n\n\n                                    return self.chrAliasTable\n\n                                })\n                        } else {\n\n                            // Try hardcoded constants -- workaround for non-compliant data at Google\n                            populateChrAliasTable(self.chrAliasTable, self.config.datasetId)\n\n                            return self.chrAliasTable\n                        }\n                    } else {\n                        // No browser object, can't build map.  This can occur when run from unit tests\n                        return self.chrAliasTable\n                    }\n                })\n        }\n    }\n\n    /**\n     * Decode an array of ga4gh read records\n     *\n\n     */\n    function decodeGa4ghReads(j) {\n\n        var i,\n            jsonRecords = j.alignments,\n            len = jsonRecords.length,\n            alignment,\n            jsonAlignment,\n            cigarDecoded,\n            alignments = [],\n            mate,\n            blocks\n\n        for (i = 0; i < len; i++) {\n\n            let record = jsonRecords[i]\n\n            alignment = new BamAlignment()\n\n            alignment.readName = record.fragmentName\n            alignment.properPlacement = record.properPlacement\n            alignment.duplicateFragment = record.duplicateFragment\n            alignment.numberReads = record.numberReads\n            alignment.fragmentLength = record.fragmentLength\n            alignment.readNumber = record.readNumber\n            alignment.failedVendorQualityChecks = record.failedVendorQualityChecks\n            alignment.secondaryAlignment = record.secondaryAlignment\n            alignment.supplementaryAlignment = record.supplementaryAlignment\n            alignment.seq = record.alignedSequence\n            alignment.qual = record.alignedQuality\n            alignment.matePos = record.nextMatePosition\n            alignment.tagDict = record.info\n            alignment.flags = encodeFlags(record)\n\n\n            jsonAlignment = record.alignment\n            if (jsonAlignment) {\n                alignment.mapped = true\n\n                alignment.chr = record.alignment.position.referenceName\n                if (genome) alignment.chr = genome.getChromosomeName(alignment.chr)\n\n                alignment.start = parseInt(record.alignment.position.position)\n                alignment.strand = !(record.alignment.position.reverseStrand)\n                alignment.mq = record.alignment.mappingQuality\n                alignment.cigar = encodeCigar(record.alignment.cigar)\n                cigarDecoded = translateCigar(record.alignment.cigar)\n\n                alignment.lengthOnRef = cigarDecoded.lengthOnRef\n\n                blocks = makeBlocks(alignment, cigarDecoded.array)\n                alignment.blocks = blocks.blocks\n                alignment.insertions = blocks.insertions\n\n            } else {\n                alignment.mapped = false\n            }\n\n            mate = record.nextMatePosition\n            if (mate) {\n                alignment.mate = {\n                    chr: mate.referenceFrame,\n                    position: parseInt(mate.position),\n                    strand: !mate.reverseStrand\n                }\n            }\n\n            if (self.filter.pass(alignment)) {\n                alignments.push(alignment)\n            }\n\n\n        }\n\n        return alignments\n\n\n        // Encode a cigar string -- used for popup text\n        function encodeCigar(cigarArray) {\n\n            var cigarString = \"\"\n            cigarArray.forEach(function (cigarUnit) {\n                var op = CigarOperationTable[cigarUnit.operation],\n                    len = cigarUnit.operationLength\n                cigarString = cigarString + (len + op)\n            })\n\n            return cigarString\n        }\n\n        // TODO -- implement me\n        function encodeFlags(json) {\n            return 0\n        }\n\n        function translateCigar(cigar) {\n\n            var cigarUnit, opLen, opLtr,\n                lengthOnRef = 0,\n                cigarArray = [],\n                i\n\n            for (i = 0; i < cigar.length; i++) {\n\n                cigarUnit = cigar[i]\n\n                opLtr = CigarOperationTable[cigarUnit.operation]\n                opLen = parseInt(cigarUnit.operationLength)    // Google represents long as a String\n\n                if (opLtr === 'M' || opLtr === 'EQ' || opLtr === 'X' || opLtr === 'D' || opLtr === 'N' || opLtr === '=')\n                    lengthOnRef += opLen\n\n                cigarArray.push({len: opLen, ltr: opLtr})\n\n            }\n\n            return {lengthOnRef: lengthOnRef, array: cigarArray}\n        }\n\n\n        /**\n         * Split the alignment record into blocks as specified in the cigarArray.  Each aligned block contains\n         * its portion of the read sequence and base quality strings.  A read sequence or base quality string\n         * of \"*\" indicates the value is not recorded.  In all other cases the length of the block sequence (block.seq)\n         * and quality string (block.qual) must == the block length.\n         *\n         * NOTE: Insertions are not yet treated // TODO\n         *\n         * @param record\n         * @param cigarArray\n         * @returns array of blocks\n         */\n        function makeBlocks(record, cigarArray) {\n\n\n            var blocks = [],\n                gaps,\n                insertions,\n                seqOffset = 0,\n                pos = record.start,\n                len = cigarArray.length,\n                gapType\n\n            for (var i = 0; i < len; i++) {\n\n                var c = cigarArray[i]\n\n                switch (c.ltr) {\n                    case 'H' :\n                        break // ignore hard clips\n                    case 'P' :\n                        break // ignore pads\n                    case 'S' :\n                        seqOffset += c.len\n                        gapType = 'S'\n                        break // soft clip read bases\n                    case 'N' :\n                    case 'D' :\n                        if (gaps === undefined) {\n                            gaps = []\n                        }\n                        gaps.push({\n                            start: pos,\n                            len: c.len,\n                            type: c.ltr\n                        })\n                        pos += c.len\n                        break\n                    case 'I' :\n                        if (insertions === undefined) insertions = []\n                        insertions.push(new AlignmentBlock({\n                            start: pos,\n                            len: c.len,\n                            seqOffset: seqOffset\n                        }))\n                        seqOffset += c.len\n                        break\n                    case 'M' :\n                    case 'EQ' :\n                    case '=' :\n                    case 'X' :\n                        blocks.push(\n                            new AlignmentBlock({\n                                start: pos,\n                                len: c.len,\n                                seqOffset: seqOffset,\n                                gapType: gapType\n                            }))\n                        seqOffset += c.len\n                        pos += c.len\n\n                        break\n\n                    default :\n                        console.log(\"Error processing cigar element: \" + c.len + c.ltr)\n                }\n            }\n\n            return {blocks: blocks, insertions: insertions, gaps: gaps}\n        }\n    }\n}\n\n\nGa4ghAlignmentReader.prototype.readMetadata = function () {\n\n    return ga4ghGet({\n        url: this.url,\n        entity: \"readgroupsets\",\n        entityId: this.readGroupSetIds\n    })\n}\n\n/**\n * Hardcoded hack to work around some non-compliant google datasets\n *\n * @param chrAliasTable\n * @param datasetId\n */\nfunction populateChrAliasTable(chrAliasTable, datasetId) {\n    var i\n    if (\"461916304629\" === datasetId || \"337315832689\" === datasetId) {\n        for (i = 1; i < 23; i++) {\n            chrAliasTable[\"chr\" + i] = i\n        }\n        chrAliasTable[\"chrX\"] = \"X\"\n        chrAliasTable[\"chrY\"] = \"Y\"\n        chrAliasTable[\"chrM\"] = \"MT\"\n    }\n}\n\nexport default Ga4ghAlignmentReader","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport BamReaderNonIndexed from \"./bamReaderNonIndexed.js\"\nimport ShardedBamReader from \"./shardedBamReader.js\"\nimport BamReader from \"./bamReader.js\"\nimport BamWebserviceReader from \"./bamWebserviceReader.js\"\nimport HtsgetBamReader from \"../htsget/htsgetBamReader.js\"\nimport CramReader from \"../cram/cramReader.js\"\nimport Ga4ghAlignmentReader from \"../ga4gh/ga4ghAlignmentReader.js\"\nimport {packAlignmentRows, unpairAlignments} from \"./alignmentUtils.js\"\nimport {isDataURL} from \"../util/igvUtils.js\"\nimport * as TrackUtils from \"../util/trackUtils.js\"\nimport {StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\nclass BamSource {\n\n    constructor(config, browser) {\n\n        const genome = browser.genome\n\n        this.config = config\n        this.genome = genome\n\n        if (isDataURL(config.url)) {\n            this.config.indexed = false\n        }\n\n        if (\"ga4gh\" === config.sourceType) {\n            this.bamReader = new Ga4ghAlignmentReader(config, genome)\n        } else if (\"pysam\" === config.sourceType) {\n            this.bamReader = new BamWebserviceReader(config, genome)\n        } else if (\"htsget\" === config.sourceType) {\n            this.bamReader = new HtsgetBamReader(config, genome)\n        } else if (\"shardedBam\" === config.sourceType) {\n            this.bamReader = new ShardedBamReader(config, genome)\n        } else if (\"cram\" === config.format) {\n            this.bamReader = new CramReader(config, genome, browser)\n        } else {\n            if (!this.config.indexURL && config.indexed !== false) {\n                if (StringUtils.isString(this.config.url)) {\n                    const inferIndexPath = TrackUtils.inferIndexPath(this.config.url, \"bai\")\n                    if (inferIndexPath) {\n                        console.error(`Warning: no indexURL specified for ${this.config.url}.  Guessing ${this.baiPath}`)\n                        this.config.indexURL = inferIndexPath\n                    } else {\n                        console.error(`Warning: no indexURL specified for ${this.config.url}.`)\n                        this.config.indexed = false\n                    }\n                } else {\n                    console.error(`Warning: no indexURL specified for ${this.config.name}.`)\n                    this.config.indexed = false\n                }\n            }\n\n            if (this.config.indexed !== false) { // && this.config.indexURL) {\n                this.bamReader = new BamReader(config, genome)\n            } else {\n                this.bamReader = new BamReaderNonIndexed(config, genome)\n            }\n        }\n\n        this.viewAsPairs = config.viewAsPairs\n        this.showSoftClips = config.showSoftClips\n    }\n\n    setViewAsPairs(bool) {\n        this.viewAsPairs = bool\n    }\n\n    setShowSoftClips(bool) {\n        this.showSoftClips = bool\n    }\n\n    async getAlignments(chr, bpStart, bpEnd) {\n\n        const genome = this.genome\n        const showSoftClips = this.showSoftClips\n\n        const alignmentContainer = await this.bamReader.readAlignments(chr, bpStart, bpEnd)\n        let alignments = alignmentContainer.alignments\n        if (!this.viewAsPairs) {\n            alignments = unpairAlignments([{alignments: alignments}])\n        }\n        const hasAlignments = alignments.length > 0\n        alignmentContainer.packedAlignmentRows = packAlignmentRows(alignments, alignmentContainer.start, alignmentContainer.end, showSoftClips)\n\n        this.alignmentContainer = alignmentContainer\n\n        if (hasAlignments) {\n            const sequence = await genome.sequence.getSequence(chr, alignmentContainer.start, alignmentContainer.end)\n            if (sequence) {\n                alignmentContainer.coverageMap.refSeq = sequence    // TODO -- fix this\n                alignmentContainer.sequence = sequence           // TODO -- fix this\n                return alignmentContainer\n            } else {\n                console.error(\"No sequence for: \" + chr + \":\" + alignmentContainer.start + \"-\" + alignmentContainer.end)\n            }\n        }\n        return alignmentContainer\n\n    }\n}\n\nexport default BamSource\n","import IGVGraphics from \"../igv-canvas.js\"\n\nfunction paintAxis(ctx, pixelWidth, pixelHeight) {\n\n    var x1,\n        x2,\n        y1,\n        y2,\n        a,\n        b,\n        reference,\n        shim,\n        font = {\n            'font': 'normal 10px Arial',\n            'textAlign': 'right',\n            'strokeStyle': \"black\"\n        }\n\n    if (undefined === this.dataRange || undefined === this.dataRange.max || undefined === this.dataRange.min) {\n        return\n    }\n\n    let flipAxis = (undefined === this.flipAxis) ? false : this.flipAxis\n\n    IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n\n    reference = 0.95 * pixelWidth\n    x1 = reference - 8\n    x2 = reference\n\n    //shim = 0.5 * 0.125;\n    shim = .01\n    y1 = y2 = shim * pixelHeight\n\n    a = {x: x2, y: y1}\n\n    // tick\n    IGVGraphics.strokeLine(ctx, x1, y1, x2, y2, font)\n    IGVGraphics.fillText(ctx, prettyPrint(flipAxis ? this.dataRange.min : this.dataRange.max), x1 + 4, y1 + 12, font)\n\n    //shim = 0.25 * 0.125;\n    y1 = y2 = (1.0 - shim) * pixelHeight\n\n    b = {x: x2, y: y1}\n\n    // tick\n    IGVGraphics.strokeLine(ctx, x1, y1, x2, y2, font)\n    IGVGraphics.fillText(ctx, prettyPrint(flipAxis ? this.dataRange.max : this.dataRange.min), x1 + 4, y1 - 4, font)\n\n    IGVGraphics.strokeLine(ctx, a.x, a.y, b.x, b.y, font)\n\n    function prettyPrint(number) {\n        // if number >= 100, show whole number\n        // if >= 1 show 1 significant digits\n        // if <  1 show 2 significant digits\n\n        if (number === 0) {\n            return \"0\"\n        } else if (Math.abs(number) >= 10) {\n            return number.toFixed()\n        } else if (Math.abs(number) >= 1) {\n            return number.toFixed(1)\n        } else {\n            return number.toFixed(2)\n        }\n    }\n}\n\nexport default paintAxis\n","import {StringUtils} from \"../node_modules/igv-utils/src/index.js\"\n\nclass Locus {\n\n    constructor({chr, start, end}) {\n        this.chr = chr\n        this.start = start\n        this.end = end\n    }\n\n\n    contains(locus) {\n        return locus.chr === this.chr && locus.start >= this.start && locus.end <= this.end\n    }\n\n    overlaps(locus) {\n        return locus.chr === this.chr && !(locus.end < this.start || locus.start > this.end)\n    }\n\n    extend(l) {\n        if (l.chr !== this.chr) return\n        this.start = Math.min(l.start, this.start)\n        this.end = Math.max(l.end, this.end)\n    }\n\n    getLocusString() {\n        if ('all' === this.chr) {\n            return 'all'\n        } else {\n            const ss = StringUtils.numberFormatter(Math.floor(this.start) + 1)\n            const ee = StringUtils.numberFormatter(Math.round(this.end))\n            return `${this.chr}:${ss}-${ee}`\n        }\n    }\n\n    static fromLocusString(str) {\n        if ('all' === str) {\n            return new Locus({chr: 'all'})\n        }\n        const parts = str.split(':')\n        const chr = parts[0]\n        const se = parts[1].split(\"-\")\n        const start = Number.parseInt(se[0].replace(/,/g, \"\")) - 1\n        const end = Number.parseInt(se[1].replace(/,/g, \"\"))\n        return new Locus({chr, start, end})\n    }\n}\n\nexport default Locus","/*!\n * vanilla-picker v2.12.1\n * https://vanilla-picker.js.org\n *\n * Copyright 2017-2021 Andreas Borgen (https://github.com/Sphinxxxx), Adam Brooks (https://github.com/dissimulate)\n * Released under the ISC license.\n */\nvar classCallCheck = function (instance, Constructor) {\n  if (!(instance instanceof Constructor)) {\n    throw new TypeError(\"Cannot call a class as a function\");\n  }\n};\n\nvar createClass = function () {\n  function defineProperties(target, props) {\n    for (var i = 0; i < props.length; i++) {\n      var descriptor = props[i];\n      descriptor.enumerable = descriptor.enumerable || false;\n      descriptor.configurable = true;\n      if (\"value\" in descriptor) descriptor.writable = true;\n      Object.defineProperty(target, descriptor.key, descriptor);\n    }\n  }\n\n  return function (Constructor, protoProps, staticProps) {\n    if (protoProps) defineProperties(Constructor.prototype, protoProps);\n    if (staticProps) defineProperties(Constructor, staticProps);\n    return Constructor;\n  };\n}();\n\nvar slicedToArray = function () {\n  function sliceIterator(arr, i) {\n    var _arr = [];\n    var _n = true;\n    var _d = false;\n    var _e = undefined;\n\n    try {\n      for (var _i = arr[Symbol.iterator](), _s; !(_n = (_s = _i.next()).done); _n = true) {\n        _arr.push(_s.value);\n\n        if (i && _arr.length === i) break;\n      }\n    } catch (err) {\n      _d = true;\n      _e = err;\n    } finally {\n      try {\n        if (!_n && _i[\"return\"]) _i[\"return\"]();\n      } finally {\n        if (_d) throw _e;\n      }\n    }\n\n    return _arr;\n  }\n\n  return function (arr, i) {\n    if (Array.isArray(arr)) {\n      return arr;\n    } else if (Symbol.iterator in Object(arr)) {\n      return sliceIterator(arr, i);\n    } else {\n      throw new TypeError(\"Invalid attempt to destructure non-iterable instance\");\n    }\n  };\n}();\n\nString.prototype.startsWith = String.prototype.startsWith || function (needle) {\n    return this.indexOf(needle) === 0;\n};\nString.prototype.padStart = String.prototype.padStart || function (len, pad) {\n    var str = this;while (str.length < len) {\n        str = pad + str;\n    }return str;\n};\n\nvar colorNames = { cb: '0f8ff', tqw: 'aebd7', q: '-ffff', qmrn: '7fffd4', zr: '0ffff', bg: '5f5dc', bsq: 'e4c4', bck: '---', nch: 'ebcd', b: '--ff', bvt: '8a2be2', brwn: 'a52a2a', brw: 'deb887', ctb: '5f9ea0', hrt: '7fff-', chcT: 'd2691e', cr: '7f50', rnw: '6495ed', crns: '8dc', crms: 'dc143c', cn: '-ffff', Db: '--8b', Dcn: '-8b8b', Dgnr: 'b8860b', Dgr: 'a9a9a9', Dgrn: '-64-', Dkhk: 'bdb76b', Dmgn: '8b-8b', Dvgr: '556b2f', Drng: '8c-', Drch: '9932cc', Dr: '8b--', Dsmn: 'e9967a', Dsgr: '8fbc8f', DsTb: '483d8b', DsTg: '2f4f4f', Dtrq: '-ced1', Dvt: '94-d3', ppnk: '1493', pskb: '-bfff', mgr: '696969', grb: '1e90ff', rbrc: 'b22222', rwht: 'af0', stg: '228b22', chs: '-ff', gnsb: 'dcdcdc', st: '8f8ff', g: 'd7-', gnr: 'daa520', gr: '808080', grn: '-8-0', grnw: 'adff2f', hnw: '0fff0', htpn: '69b4', nnr: 'cd5c5c', ng: '4b-82', vr: '0', khk: '0e68c', vnr: 'e6e6fa', nrb: '0f5', wngr: '7cfc-', mnch: 'acd', Lb: 'add8e6', Lcr: '08080', Lcn: 'e0ffff', Lgnr: 'afad2', Lgr: 'd3d3d3', Lgrn: '90ee90', Lpnk: 'b6c1', Lsmn: 'a07a', Lsgr: '20b2aa', Lskb: '87cefa', LsTg: '778899', Lstb: 'b0c4de', Lw: 'e0', m: '-ff-', mgrn: '32cd32', nn: 'af0e6', mgnt: '-ff', mrn: '8--0', mqm: '66cdaa', mmb: '--cd', mmrc: 'ba55d3', mmpr: '9370db', msg: '3cb371', mmsT: '7b68ee', '': '-fa9a', mtr: '48d1cc', mmvt: 'c71585', mnLb: '191970', ntc: '5fffa', mstr: 'e4e1', mccs: 'e4b5', vjw: 'dead', nv: '--80', c: 'df5e6', v: '808-0', vrb: '6b8e23', rng: 'a5-', rngr: '45-', rch: 'da70d6', pgnr: 'eee8aa', pgrn: '98fb98', ptrq: 'afeeee', pvtr: 'db7093', ppwh: 'efd5', pchp: 'dab9', pr: 'cd853f', pnk: 'c0cb', pm: 'dda0dd', pwrb: 'b0e0e6', prp: '8-080', cc: '663399', r: '--', sbr: 'bc8f8f', rb: '4169e1', sbrw: '8b4513', smn: 'a8072', nbr: '4a460', sgrn: '2e8b57', ssh: '5ee', snn: 'a0522d', svr: 'c0c0c0', skb: '87ceeb', sTb: '6a5acd', sTgr: '708090', snw: 'afa', n: '-ff7f', stb: '4682b4', tn: 'd2b48c', t: '-8080', thst: 'd8bfd8', tmT: '6347', trqs: '40e0d0', vt: 'ee82ee', whT: '5deb3', wht: '', hts: '5f5f5', w: '-', wgrn: '9acd32' };\n\nfunction printNum(num) {\n    var decs = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 1;\n\n    var str = decs > 0 ? num.toFixed(decs).replace(/0+$/, '').replace(/\\.$/, '') : num.toString();\n    return str || '0';\n}\n\nvar Color = function () {\n    function Color(r, g, b, a) {\n        classCallCheck(this, Color);\n\n\n        var that = this;\n        function parseString(input) {\n\n            if (input.startsWith('hsl')) {\n                var _input$match$map = input.match(/([\\-\\d\\.e]+)/g).map(Number),\n                    _input$match$map2 = slicedToArray(_input$match$map, 4),\n                    h = _input$match$map2[0],\n                    s = _input$match$map2[1],\n                    l = _input$match$map2[2],\n                    _a = _input$match$map2[3];\n\n                if (_a === undefined) {\n                    _a = 1;\n                }\n\n                h /= 360;\n                s /= 100;\n                l /= 100;\n                that.hsla = [h, s, l, _a];\n            } else if (input.startsWith('rgb')) {\n                var _input$match$map3 = input.match(/([\\-\\d\\.e]+)/g).map(Number),\n                    _input$match$map4 = slicedToArray(_input$match$map3, 4),\n                    _r = _input$match$map4[0],\n                    _g = _input$match$map4[1],\n                    _b = _input$match$map4[2],\n                    _a2 = _input$match$map4[3];\n\n                if (_a2 === undefined) {\n                    _a2 = 1;\n                }\n\n                that.rgba = [_r, _g, _b, _a2];\n            } else {\n                if (input.startsWith('#')) {\n                    that.rgba = Color.hexToRgb(input);\n                } else {\n                    that.rgba = Color.nameToRgb(input) || Color.hexToRgb(input);\n                }\n            }\n        }\n\n        if (r === undefined) ; else if (Array.isArray(r)) {\n            this.rgba = r;\n        } else if (b === undefined) {\n            var color = r && '' + r;\n            if (color) {\n                parseString(color.toLowerCase());\n            }\n        } else {\n            this.rgba = [r, g, b, a === undefined ? 1 : a];\n        }\n    }\n\n    createClass(Color, [{\n        key: 'printRGB',\n        value: function printRGB(alpha) {\n            var rgb = alpha ? this.rgba : this.rgba.slice(0, 3),\n                vals = rgb.map(function (x, i) {\n                return printNum(x, i === 3 ? 3 : 0);\n            });\n\n            return alpha ? 'rgba(' + vals + ')' : 'rgb(' + vals + ')';\n        }\n    }, {\n        key: 'printHSL',\n        value: function printHSL(alpha) {\n            var mults = [360, 100, 100, 1],\n                suff = ['', '%', '%', ''];\n\n            var hsl = alpha ? this.hsla : this.hsla.slice(0, 3),\n                vals = hsl.map(function (x, i) {\n                return printNum(x * mults[i], i === 3 ? 3 : 1) + suff[i];\n            });\n\n            return alpha ? 'hsla(' + vals + ')' : 'hsl(' + vals + ')';\n        }\n    }, {\n        key: 'printHex',\n        value: function printHex(alpha) {\n            var hex = this.hex;\n            return alpha ? hex : hex.substring(0, 7);\n        }\n    }, {\n        key: 'rgba',\n        get: function get() {\n            if (this._rgba) {\n                return this._rgba;\n            }\n            if (!this._hsla) {\n                throw new Error('No color is set');\n            }\n\n            return this._rgba = Color.hslToRgb(this._hsla);\n        },\n        set: function set(rgb) {\n            if (rgb.length === 3) {\n                rgb[3] = 1;\n            }\n\n            this._rgba = rgb;\n            this._hsla = null;\n        }\n    }, {\n        key: 'rgbString',\n        get: function get() {\n            return this.printRGB();\n        }\n    }, {\n        key: 'rgbaString',\n        get: function get() {\n            return this.printRGB(true);\n        }\n    }, {\n        key: 'hsla',\n        get: function get() {\n            if (this._hsla) {\n                return this._hsla;\n            }\n            if (!this._rgba) {\n                throw new Error('No color is set');\n            }\n\n            return this._hsla = Color.rgbToHsl(this._rgba);\n        },\n        set: function set(hsl) {\n            if (hsl.length === 3) {\n                hsl[3] = 1;\n            }\n\n            this._hsla = hsl;\n            this._rgba = null;\n        }\n    }, {\n        key: 'hslString',\n        get: function get() {\n            return this.printHSL();\n        }\n    }, {\n        key: 'hslaString',\n        get: function get() {\n            return this.printHSL(true);\n        }\n    }, {\n        key: 'hex',\n        get: function get() {\n            var rgb = this.rgba,\n                hex = rgb.map(function (x, i) {\n                return i < 3 ? x.toString(16) : Math.round(x * 255).toString(16);\n            });\n\n            return '#' + hex.map(function (x) {\n                return x.padStart(2, '0');\n            }).join('');\n        },\n        set: function set(hex) {\n            this.rgba = Color.hexToRgb(hex);\n        }\n    }], [{\n        key: 'hexToRgb',\n        value: function hexToRgb(input) {\n\n            var hex = (input.startsWith('#') ? input.slice(1) : input).replace(/^(\\w{3})$/, '$1F').replace(/^(\\w)(\\w)(\\w)(\\w)$/, '$1$1$2$2$3$3$4$4').replace(/^(\\w{6})$/, '$1FF');\n\n            if (!hex.match(/^([0-9a-fA-F]{8})$/)) {\n                throw new Error('Unknown hex color; ' + input);\n            }\n\n            var rgba = hex.match(/^(\\w\\w)(\\w\\w)(\\w\\w)(\\w\\w)$/).slice(1).map(function (x) {\n                return parseInt(x, 16);\n            });\n\n            rgba[3] = rgba[3] / 255;\n            return rgba;\n        }\n    }, {\n        key: 'nameToRgb',\n        value: function nameToRgb(input) {\n\n            var hash = input.toLowerCase().replace('at', 'T').replace(/[aeiouyldf]/g, '').replace('ght', 'L').replace('rk', 'D').slice(-5, 4),\n                hex = colorNames[hash];\n            return hex === undefined ? hex : Color.hexToRgb(hex.replace(/\\-/g, '00').padStart(6, 'f'));\n        }\n    }, {\n        key: 'rgbToHsl',\n        value: function rgbToHsl(_ref) {\n            var _ref2 = slicedToArray(_ref, 4),\n                r = _ref2[0],\n                g = _ref2[1],\n                b = _ref2[2],\n                a = _ref2[3];\n\n            r /= 255;\n            g /= 255;\n            b /= 255;\n\n            var max = Math.max(r, g, b),\n                min = Math.min(r, g, b);\n            var h = void 0,\n                s = void 0,\n                l = (max + min) / 2;\n\n            if (max === min) {\n                h = s = 0;\n            } else {\n                var d = max - min;\n                s = l > 0.5 ? d / (2 - max - min) : d / (max + min);\n                switch (max) {\n                    case r:\n                        h = (g - b) / d + (g < b ? 6 : 0);break;\n                    case g:\n                        h = (b - r) / d + 2;break;\n                    case b:\n                        h = (r - g) / d + 4;break;\n                }\n\n                h /= 6;\n            }\n\n            return [h, s, l, a];\n        }\n    }, {\n        key: 'hslToRgb',\n        value: function hslToRgb(_ref3) {\n            var _ref4 = slicedToArray(_ref3, 4),\n                h = _ref4[0],\n                s = _ref4[1],\n                l = _ref4[2],\n                a = _ref4[3];\n\n            var r = void 0,\n                g = void 0,\n                b = void 0;\n\n            if (s === 0) {\n                r = g = b = l;\n            } else {\n                var hue2rgb = function hue2rgb(p, q, t) {\n                    if (t < 0) t += 1;\n                    if (t > 1) t -= 1;\n                    if (t < 1 / 6) return p + (q - p) * 6 * t;\n                    if (t < 1 / 2) return q;\n                    if (t < 2 / 3) return p + (q - p) * (2 / 3 - t) * 6;\n                    return p;\n                };\n\n                var q = l < 0.5 ? l * (1 + s) : l + s - l * s,\n                    p = 2 * l - q;\n\n                r = hue2rgb(p, q, h + 1 / 3);\n                g = hue2rgb(p, q, h);\n                b = hue2rgb(p, q, h - 1 / 3);\n            }\n\n            var rgba = [r * 255, g * 255, b * 255].map(Math.round);\n            rgba[3] = a;\n\n            return rgba;\n        }\n    }]);\n    return Color;\n}();\n\nvar EventBucket = function () {\n    function EventBucket() {\n        classCallCheck(this, EventBucket);\n\n        this._events = [];\n    }\n\n    createClass(EventBucket, [{\n        key: 'add',\n        value: function add(target, type, handler) {\n            target.addEventListener(type, handler, false);\n            this._events.push({\n                target: target,\n                type: type,\n                handler: handler\n            });\n        }\n    }, {\n        key: 'remove',\n        value: function remove(target, type, handler) {\n            this._events = this._events.filter(function (e) {\n                var isMatch = true;\n                if (target && target !== e.target) {\n                    isMatch = false;\n                }\n                if (type && type !== e.type) {\n                    isMatch = false;\n                }\n                if (handler && handler !== e.handler) {\n                    isMatch = false;\n                }\n\n                if (isMatch) {\n                    EventBucket._doRemove(e.target, e.type, e.handler);\n                }\n                return !isMatch;\n            });\n        }\n    }, {\n        key: 'destroy',\n        value: function destroy() {\n            this._events.forEach(function (e) {\n                return EventBucket._doRemove(e.target, e.type, e.handler);\n            });\n            this._events = [];\n        }\n    }], [{\n        key: '_doRemove',\n        value: function _doRemove(target, type, handler) {\n            target.removeEventListener(type, handler, false);\n        }\n    }]);\n    return EventBucket;\n}();\n\nfunction parseHTML(htmlString) {\n\n    var div = document.createElement('div');\n    div.innerHTML = htmlString;\n    return div.firstElementChild;\n}\n\nfunction dragTrack(eventBucket, area, callback) {\n    var dragging = false;\n\n    function clamp(val, min, max) {\n        return Math.max(min, Math.min(val, max));\n    }\n\n    function onMove(e, info, starting) {\n        if (starting) {\n            dragging = true;\n        }\n        if (!dragging) {\n            return;\n        }\n\n        e.preventDefault();\n\n        var bounds = area.getBoundingClientRect(),\n            w = bounds.width,\n            h = bounds.height,\n            x = info.clientX,\n            y = info.clientY;\n\n        var relX = clamp(x - bounds.left, 0, w),\n            relY = clamp(y - bounds.top, 0, h);\n\n        callback(relX / w, relY / h);\n    }\n\n    function onMouse(e, starting) {\n        var button = e.buttons === undefined ? e.which : e.buttons;\n        if (button === 1) {\n            onMove(e, e, starting);\n        } else {\n            dragging = false;\n        }\n    }\n\n    function onTouch(e, starting) {\n        if (e.touches.length === 1) {\n            onMove(e, e.touches[0], starting);\n        } else {\n            dragging = false;\n        }\n    }\n\n    eventBucket.add(area, 'mousedown', function (e) {\n        onMouse(e, true);\n    });\n    eventBucket.add(area, 'touchstart', function (e) {\n        onTouch(e, true);\n    });\n    eventBucket.add(window, 'mousemove', onMouse);\n    eventBucket.add(area, 'touchmove', onTouch);\n    eventBucket.add(window, 'mouseup', function (e) {\n        dragging = false;\n    });\n    eventBucket.add(area, 'touchend', function (e) {\n        dragging = false;\n    });\n    eventBucket.add(area, 'touchcancel', function (e) {\n        dragging = false;\n    });\n}\n\nvar BG_TRANSP = 'linear-gradient(45deg, lightgrey 25%, transparent 25%, transparent 75%, lightgrey 75%) 0 0 / 2em 2em,\\n                   linear-gradient(45deg, lightgrey 25%,       white 25%,       white 75%, lightgrey 75%) 1em 1em / 2em 2em';\nvar HUES = 360;\n\nvar EVENT_KEY = 'keydown',\n    EVENT_CLICK_OUTSIDE = 'mousedown',\n    EVENT_TAB_MOVE = 'focusin';\n\nfunction $(selector, context) {\n    return (context || document).querySelector(selector);\n}\n\nfunction stopEvent(e) {\n\n    e.preventDefault();\n    e.stopPropagation();\n}\nfunction onKey(bucket, target, keys, handler, stop) {\n    bucket.add(target, EVENT_KEY, function (e) {\n        if (keys.indexOf(e.key) >= 0) {\n            if (stop) {\n                stopEvent(e);\n            }\n            handler(e);\n        }\n    });\n}\n\nvar Picker = function () {\n    function Picker(options) {\n        classCallCheck(this, Picker);\n\n\n        this.settings = {\n\n            popup: 'right',\n            layout: 'default',\n            alpha: true,\n            editor: true,\n            editorFormat: 'hex',\n            cancelButton: false,\n            defaultColor: '#0cf'\n        };\n\n        this._events = new EventBucket();\n\n        this.onChange = null;\n\n        this.onDone = null;\n\n        this.onOpen = null;\n\n        this.onClose = null;\n\n        this.setOptions(options);\n    }\n\n    createClass(Picker, [{\n        key: 'setOptions',\n        value: function setOptions(options) {\n            var _this = this;\n\n            if (!options) {\n                return;\n            }\n            var settings = this.settings;\n\n            function transfer(source, target, skipKeys) {\n                for (var key in source) {\n                    if (skipKeys && skipKeys.indexOf(key) >= 0) {\n                        continue;\n                    }\n\n                    target[key] = source[key];\n                }\n            }\n\n            if (options instanceof HTMLElement) {\n                settings.parent = options;\n            } else {\n\n                if (settings.parent && options.parent && settings.parent !== options.parent) {\n                    this._events.remove(settings.parent);\n                    this._popupInited = false;\n                }\n\n                transfer(options, settings);\n\n                if (options.onChange) {\n                    this.onChange = options.onChange;\n                }\n                if (options.onDone) {\n                    this.onDone = options.onDone;\n                }\n                if (options.onOpen) {\n                    this.onOpen = options.onOpen;\n                }\n                if (options.onClose) {\n                    this.onClose = options.onClose;\n                }\n\n                var col = options.color || options.colour;\n                if (col) {\n                    this._setColor(col);\n                }\n            }\n\n            var parent = settings.parent;\n            if (parent && settings.popup && !this._popupInited) {\n\n                var openProxy = function openProxy(e) {\n                    return _this.openHandler(e);\n                };\n\n                this._events.add(parent, 'click', openProxy);\n\n                onKey(this._events, parent, [' ', 'Spacebar', 'Enter'], openProxy);\n\n                this._popupInited = true;\n            } else if (options.parent && !settings.popup) {\n                this.show();\n            }\n        }\n    }, {\n        key: 'openHandler',\n        value: function openHandler(e) {\n            if (this.show()) {\n\n                e && e.preventDefault();\n\n                this.settings.parent.style.pointerEvents = 'none';\n\n                var toFocus = e && e.type === EVENT_KEY ? this._domEdit : this.domElement;\n                setTimeout(function () {\n                    return toFocus.focus();\n                }, 100);\n\n                if (this.onOpen) {\n                    this.onOpen(this.colour);\n                }\n            }\n        }\n    }, {\n        key: 'closeHandler',\n        value: function closeHandler(e) {\n            var event = e && e.type;\n            var doHide = false;\n\n            if (!e) {\n                doHide = true;\n            } else if (event === EVENT_CLICK_OUTSIDE || event === EVENT_TAB_MOVE) {\n\n                var knownTime = (this.__containedEvent || 0) + 100;\n                if (e.timeStamp > knownTime) {\n                    doHide = true;\n                }\n            } else {\n\n                stopEvent(e);\n\n                doHide = true;\n            }\n\n            if (doHide && this.hide()) {\n                this.settings.parent.style.pointerEvents = '';\n\n                if (event !== EVENT_CLICK_OUTSIDE) {\n                    this.settings.parent.focus();\n                }\n\n                if (this.onClose) {\n                    this.onClose(this.colour);\n                }\n            }\n        }\n    }, {\n        key: 'movePopup',\n        value: function movePopup(options, open) {\n\n            this.closeHandler();\n\n            this.setOptions(options);\n            if (open) {\n                this.openHandler();\n            }\n        }\n    }, {\n        key: 'setColor',\n        value: function setColor(color, silent) {\n            this._setColor(color, { silent: silent });\n        }\n    }, {\n        key: '_setColor',\n        value: function _setColor(color, flags) {\n            if (typeof color === 'string') {\n                color = color.trim();\n            }\n            if (!color) {\n                return;\n            }\n\n            flags = flags || {};\n            var c = void 0;\n            try {\n\n                c = new Color(color);\n            } catch (ex) {\n                if (flags.failSilently) {\n                    return;\n                }\n                throw ex;\n            }\n\n            if (!this.settings.alpha) {\n                var hsla = c.hsla;\n                hsla[3] = 1;\n                c.hsla = hsla;\n            }\n            this.colour = this.color = c;\n            this._setHSLA(null, null, null, null, flags);\n        }\n    }, {\n        key: 'setColour',\n        value: function setColour(colour, silent) {\n            this.setColor(colour, silent);\n        }\n    }, {\n        key: 'show',\n        value: function show() {\n            var parent = this.settings.parent;\n            if (!parent) {\n                return false;\n            }\n\n            if (this.domElement) {\n                var toggled = this._toggleDOM(true);\n\n                this._setPosition();\n\n                return toggled;\n            }\n\n            var html = this.settings.template || '<div class=\"picker_wrapper\" tabindex=\"-1\"><div class=\"picker_arrow\"></div><div class=\"picker_hue picker_slider\"><div class=\"picker_selector\"></div></div><div class=\"picker_sl\"><div class=\"picker_selector\"></div></div><div class=\"picker_alpha picker_slider\"><div class=\"picker_selector\"></div></div><div class=\"picker_editor\"><input aria-label=\"Type a color name or hex value\"/></div><div class=\"picker_sample\"></div><div class=\"picker_done\"><button>Ok</button></div><div class=\"picker_cancel\"><button>Cancel</button></div></div>';\n            var wrapper = parseHTML(html);\n\n            this.domElement = wrapper;\n            this._domH = $('.picker_hue', wrapper);\n            this._domSL = $('.picker_sl', wrapper);\n            this._domA = $('.picker_alpha', wrapper);\n            this._domEdit = $('.picker_editor input', wrapper);\n            this._domSample = $('.picker_sample', wrapper);\n            this._domOkay = $('.picker_done button', wrapper);\n            this._domCancel = $('.picker_cancel button', wrapper);\n\n            wrapper.classList.add('layout_' + this.settings.layout);\n            if (!this.settings.alpha) {\n                wrapper.classList.add('no_alpha');\n            }\n            if (!this.settings.editor) {\n                wrapper.classList.add('no_editor');\n            }\n            if (!this.settings.cancelButton) {\n                wrapper.classList.add('no_cancel');\n            }\n            this._ifPopup(function () {\n                return wrapper.classList.add('popup');\n            });\n\n            this._setPosition();\n\n            if (this.colour) {\n                this._updateUI();\n            } else {\n                this._setColor(this.settings.defaultColor);\n            }\n            this._bindEvents();\n\n            return true;\n        }\n    }, {\n        key: 'hide',\n        value: function hide() {\n            return this._toggleDOM(false);\n        }\n    }, {\n        key: 'destroy',\n        value: function destroy() {\n            this._events.destroy();\n            if (this.domElement) {\n                this.settings.parent.removeChild(this.domElement);\n            }\n        }\n    }, {\n        key: '_bindEvents',\n        value: function _bindEvents() {\n            var _this2 = this;\n\n            var that = this,\n                dom = this.domElement,\n                events = this._events;\n\n            function addEvent(target, type, handler) {\n                events.add(target, type, handler);\n            }\n\n            addEvent(dom, 'click', function (e) {\n                return e.preventDefault();\n            });\n\n            dragTrack(events, this._domH, function (x, y) {\n                return that._setHSLA(x);\n            });\n\n            dragTrack(events, this._domSL, function (x, y) {\n                return that._setHSLA(null, x, 1 - y);\n            });\n\n            if (this.settings.alpha) {\n                dragTrack(events, this._domA, function (x, y) {\n                    return that._setHSLA(null, null, null, 1 - y);\n                });\n            }\n\n            var editInput = this._domEdit;\n            {\n                addEvent(editInput, 'input', function (e) {\n                    that._setColor(this.value, { fromEditor: true, failSilently: true });\n                });\n\n                addEvent(editInput, 'focus', function (e) {\n                    var input = this;\n\n                    if (input.selectionStart === input.selectionEnd) {\n                        input.select();\n                    }\n                });\n            }\n\n            this._ifPopup(function () {\n\n                var popupCloseProxy = function popupCloseProxy(e) {\n                    return _this2.closeHandler(e);\n                };\n\n                addEvent(window, EVENT_CLICK_OUTSIDE, popupCloseProxy);\n                addEvent(window, EVENT_TAB_MOVE, popupCloseProxy);\n                onKey(events, dom, ['Esc', 'Escape'], popupCloseProxy);\n\n                var timeKeeper = function timeKeeper(e) {\n                    _this2.__containedEvent = e.timeStamp;\n                };\n                addEvent(dom, EVENT_CLICK_OUTSIDE, timeKeeper);\n\n                addEvent(dom, EVENT_TAB_MOVE, timeKeeper);\n\n                addEvent(_this2._domCancel, 'click', popupCloseProxy);\n            });\n\n            var onDoneProxy = function onDoneProxy(e) {\n                _this2._ifPopup(function () {\n                    return _this2.closeHandler(e);\n                });\n                if (_this2.onDone) {\n                    _this2.onDone(_this2.colour);\n                }\n            };\n            addEvent(this._domOkay, 'click', onDoneProxy);\n            onKey(events, dom, ['Enter'], onDoneProxy);\n        }\n    }, {\n        key: '_setPosition',\n        value: function _setPosition() {\n            var parent = this.settings.parent,\n                elm = this.domElement;\n\n            if (parent !== elm.parentNode) {\n                parent.appendChild(elm);\n            }\n\n            this._ifPopup(function (popup) {\n\n                if (getComputedStyle(parent).position === 'static') {\n                    parent.style.position = 'relative';\n                }\n\n                var cssClass = popup === true ? 'popup_right' : 'popup_' + popup;\n\n                ['popup_top', 'popup_bottom', 'popup_left', 'popup_right'].forEach(function (c) {\n\n                    if (c === cssClass) {\n                        elm.classList.add(c);\n                    } else {\n                        elm.classList.remove(c);\n                    }\n                });\n\n                elm.classList.add(cssClass);\n            });\n        }\n    }, {\n        key: '_setHSLA',\n        value: function _setHSLA(h, s, l, a, flags) {\n            flags = flags || {};\n\n            var col = this.colour,\n                hsla = col.hsla;\n\n            [h, s, l, a].forEach(function (x, i) {\n                if (x || x === 0) {\n                    hsla[i] = x;\n                }\n            });\n            col.hsla = hsla;\n\n            this._updateUI(flags);\n\n            if (this.onChange && !flags.silent) {\n                this.onChange(col);\n            }\n        }\n    }, {\n        key: '_updateUI',\n        value: function _updateUI(flags) {\n            if (!this.domElement) {\n                return;\n            }\n            flags = flags || {};\n\n            var col = this.colour,\n                hsl = col.hsla,\n                cssHue = 'hsl(' + hsl[0] * HUES + ', 100%, 50%)',\n                cssHSL = col.hslString,\n                cssHSLA = col.hslaString;\n\n            var uiH = this._domH,\n                uiSL = this._domSL,\n                uiA = this._domA,\n                thumbH = $('.picker_selector', uiH),\n                thumbSL = $('.picker_selector', uiSL),\n                thumbA = $('.picker_selector', uiA);\n\n            function posX(parent, child, relX) {\n                child.style.left = relX * 100 + '%';\n            }\n            function posY(parent, child, relY) {\n                child.style.top = relY * 100 + '%';\n            }\n\n            posX(uiH, thumbH, hsl[0]);\n\n            this._domSL.style.backgroundColor = this._domH.style.color = cssHue;\n\n            posX(uiSL, thumbSL, hsl[1]);\n            posY(uiSL, thumbSL, 1 - hsl[2]);\n\n            uiSL.style.color = cssHSL;\n\n            posY(uiA, thumbA, 1 - hsl[3]);\n\n            var opaque = cssHSL,\n                transp = opaque.replace('hsl', 'hsla').replace(')', ', 0)'),\n                bg = 'linear-gradient(' + [opaque, transp] + ')';\n\n            this._domA.style.background = bg + ', ' + BG_TRANSP;\n\n            if (!flags.fromEditor) {\n                var format = this.settings.editorFormat,\n                    alpha = this.settings.alpha;\n\n                var value = void 0;\n                switch (format) {\n                    case 'rgb':\n                        value = col.printRGB(alpha);break;\n                    case 'hsl':\n                        value = col.printHSL(alpha);break;\n                    default:\n                        value = col.printHex(alpha);\n                }\n                this._domEdit.value = value;\n            }\n\n            this._domSample.style.color = cssHSLA;\n        }\n    }, {\n        key: '_ifPopup',\n        value: function _ifPopup(actionIf, actionElse) {\n            if (this.settings.parent && this.settings.popup) {\n                actionIf && actionIf(this.settings.popup);\n            } else {\n                actionElse && actionElse();\n            }\n        }\n    }, {\n        key: '_toggleDOM',\n        value: function _toggleDOM(toVisible) {\n            var dom = this.domElement;\n            if (!dom) {\n                return false;\n            }\n\n            var displayStyle = toVisible ? '' : 'none',\n                toggle = dom.style.display !== displayStyle;\n\n            if (toggle) {\n                dom.style.display = displayStyle;\n            }\n            return toggle;\n        }\n    }]);\n    return Picker;\n}();\n\n{\n    var style = document.createElement('style');\n    style.textContent = '.picker_wrapper.no_alpha .picker_alpha{display:none}.picker_wrapper.no_editor .picker_editor{position:absolute;z-index:-1;opacity:0}.picker_wrapper.no_cancel .picker_cancel{display:none}.layout_default.picker_wrapper{display:flex;flex-flow:row wrap;justify-content:space-between;align-items:stretch;font-size:10px;width:25em;padding:.5em}.layout_default.picker_wrapper input,.layout_default.picker_wrapper button{font-size:1rem}.layout_default.picker_wrapper>*{margin:.5em}.layout_default.picker_wrapper::before{content:\"\";display:block;width:100%;height:0;order:1}.layout_default .picker_slider,.layout_default .picker_selector{padding:1em}.layout_default .picker_hue{width:100%}.layout_default .picker_sl{flex:1 1 auto}.layout_default .picker_sl::before{content:\"\";display:block;padding-bottom:100%}.layout_default .picker_editor{order:1;width:6.5rem}.layout_default .picker_editor input{width:100%;height:100%}.layout_default .picker_sample{order:1;flex:1 1 auto}.layout_default .picker_done,.layout_default .picker_cancel{order:1}.picker_wrapper{box-sizing:border-box;background:#f2f2f2;box-shadow:0 0 0 1px silver;cursor:default;font-family:sans-serif;color:#444;pointer-events:auto}.picker_wrapper:focus{outline:none}.picker_wrapper button,.picker_wrapper input{box-sizing:border-box;border:none;box-shadow:0 0 0 1px silver;outline:none}.picker_wrapper button:focus,.picker_wrapper button:active,.picker_wrapper input:focus,.picker_wrapper input:active{box-shadow:0 0 2px 1px #1e90ff}.picker_wrapper button{padding:.4em .6em;cursor:pointer;background-color:#f5f5f5;background-image:linear-gradient(0deg, gainsboro, transparent)}.picker_wrapper button:active{background-image:linear-gradient(0deg, transparent, gainsboro)}.picker_wrapper button:hover{background-color:#fff}.picker_selector{position:absolute;z-index:1;display:block;-webkit-transform:translate(-50%, -50%);transform:translate(-50%, -50%);border:2px solid #fff;border-radius:100%;box-shadow:0 0 3px 1px #67b9ff;background:currentColor;cursor:pointer}.picker_slider .picker_selector{border-radius:2px}.picker_hue{position:relative;background-image:linear-gradient(90deg, red, yellow, lime, cyan, blue, magenta, red);box-shadow:0 0 0 1px silver}.picker_sl{position:relative;box-shadow:0 0 0 1px silver;background-image:linear-gradient(180deg, white, rgba(255, 255, 255, 0) 50%),linear-gradient(0deg, black, rgba(0, 0, 0, 0) 50%),linear-gradient(90deg, #808080, rgba(128, 128, 128, 0))}.picker_alpha,.picker_sample{position:relative;background:linear-gradient(45deg, lightgrey 25%, transparent 25%, transparent 75%, lightgrey 75%) 0 0/2em 2em,linear-gradient(45deg, lightgrey 25%, white 25%, white 75%, lightgrey 75%) 1em 1em/2em 2em;box-shadow:0 0 0 1px silver}.picker_alpha .picker_selector,.picker_sample .picker_selector{background:none}.picker_editor input{font-family:monospace;padding:.2em .4em}.picker_sample::before{content:\"\";position:absolute;display:block;width:100%;height:100%;background:currentColor}.picker_arrow{position:absolute;z-index:-1}.picker_wrapper.popup{position:absolute;z-index:2;margin:1.5em}.picker_wrapper.popup,.picker_wrapper.popup .picker_arrow::before,.picker_wrapper.popup .picker_arrow::after{background:#f2f2f2;box-shadow:0 0 10px 1px rgba(0,0,0,.4)}.picker_wrapper.popup .picker_arrow{width:3em;height:3em;margin:0}.picker_wrapper.popup .picker_arrow::before,.picker_wrapper.popup .picker_arrow::after{content:\"\";display:block;position:absolute;top:0;left:0;z-index:-99}.picker_wrapper.popup .picker_arrow::before{width:100%;height:100%;-webkit-transform:skew(45deg);transform:skew(45deg);-webkit-transform-origin:0 100%;transform-origin:0 100%}.picker_wrapper.popup .picker_arrow::after{width:150%;height:150%;box-shadow:none}.popup.popup_top{bottom:100%;left:0}.popup.popup_top .picker_arrow{bottom:0;left:0;-webkit-transform:rotate(-90deg);transform:rotate(-90deg)}.popup.popup_bottom{top:100%;left:0}.popup.popup_bottom .picker_arrow{top:0;left:0;-webkit-transform:rotate(90deg) scale(1, -1);transform:rotate(90deg) scale(1, -1)}.popup.popup_left{top:0;right:100%}.popup.popup_left .picker_arrow{top:0;right:0;-webkit-transform:scale(-1, 1);transform:scale(-1, 1)}.popup.popup_right{top:0;left:100%}.popup.popup_right .picker_arrow{top:0;left:0}';\n    document.documentElement.firstElementChild.appendChild(style);\n\n    Picker.StyleElement = style;\n}\n\nfunction getChrColor(chr) {\n    if (chrColorMap[chr]) {\n        return chrColorMap[chr];\n    } else if (chrColorMap[\"chr\" + chr]) {\n        const color = chrColorMap[\"chr\" + chr];\n        chrColorMap[chr] = color;\n        return color;\n    } else {\n        const color = randomRGB();\n        chrColorMap[chr] = color;\n        return color;\n    }\n}\n\nfunction randomRGB (min, max) {\n\n    var r = Math.round(Math.random() * 255).toString(10);\n    var g = Math.round(Math.random() * 255).toString(10);\n    var b = Math.round(Math.random() * 255).toString(10);\n    return \"rgb(\" + r + \",\" + g + \",\" + b + \")\";\n}\n\nconst chrColorMap = {\n    \"chrX\": \"rgb(204, 153, 0)\",\n    \"chrY\": \"rgb(153, 204, 0\",\n    \"chrUn\": \"rgb(50, 50, 50)\",\n    \"chr1\": \"rgb(80, 80, 255)\",\n    \"chrI\": \"rgb(139, 155, 187)\",\n    \"chr2\": \"rgb(206, 61, 50)\",\n    \"chrII\": \"rgb(206, 61, 50)\",\n    \"chr2a\": \"rgb(216, 71, 60)\",\n    \"chr2b\": \"rgb(226, 81, 70)\",\n    \"chr3\": \"rgb(116, 155, 88)\",\n    \"chrIII\": \"rgb(116, 155, 88)\",\n    \"chr4\": \"rgb(240, 230, 133)\",\n    \"chrIV\": \"rgb(240, 230, 133)\",\n    \"chr5\": \"rgb(70, 105, 131)\",\n    \"chr6\": \"rgb(186, 99, 56)\",\n    \"chr7\": \"rgb(93, 177, 221)\",\n    \"chr8\": \"rgb(128, 34, 104)\",\n    \"chr9\": \"rgb(107, 215, 107)\",\n    \"chr10\": \"rgb(213, 149, 167)\",\n    \"chr11\": \"rgb(146, 72, 34)\",\n    \"chr12\": \"rgb(131, 123, 141)\",\n    \"chr13\": \"rgb(199, 81, 39)\",\n    \"chr14\": \"rgb(213, 143, 92)\",\n    \"chr15\": \"rgb(122, 101, 165)\",\n    \"chr16\": \"rgb(228, 175, 105)\",\n    \"chr17\": \"rgb(59, 27, 83)\",\n    \"chr18\": \"rgb(205, 222, 183)\",\n    \"chr19\": \"rgb(97, 42, 121)\",\n    \"chr20\": \"rgb(174, 31, 99)\",\n    \"chr21\": \"rgb(231, 199, 111)\",\n    \"chr22\": \"rgb(90, 101, 94)\",\n    \"chr23\": \"rgb(204, 153, 0)\",\n    \"chr24\": \"rgb(153, 204, 0)\",\n    \"chr25\": \"rgb(51, 204, 0)\",\n    \"chr26\": \"rgb(0, 204, 51)\",\n    \"chr27\": \"rgb(0, 204, 153)\",\n    \"chr28\": \"rgb(0, 153, 204)\",\n    \"chr29\": \"rgb(10, 71, 255)\",\n    \"chr30\": \"rgb(71, 117, 255)\",\n    \"chr31\": \"rgb(255, 194, 10)\",\n    \"chr32\": \"rgb(255, 209, 71)\",\n    \"chr33\": \"rgb(153, 0, 51)\",\n    \"chr34\": \"rgb(153, 26, 0)\",\n    \"chr35\": \"rgb(153, 102, 0)\",\n    \"chr36\": \"rgb(128, 153, 0)\",\n    \"chr37\": \"rgb(51, 153, 0)\",\n    \"chr38\": \"rgb(0, 153, 26)\",\n    \"chr39\": \"rgb(0, 153, 102)\",\n    \"chr40\": \"rgb(0, 128, 153)\",\n    \"chr41\": \"rgb(0, 51, 153)\",\n    \"chr42\": \"rgb(26, 0, 153)\",\n    \"chr43\": \"rgb(102, 0, 153)\",\n    \"chr44\": \"rgb(153, 0, 128)\",\n    \"chr45\": \"rgb(214, 0, 71)\",\n    \"chr46\": \"rgb(255, 20, 99)\",\n    \"chr47\": \"rgb(0, 214, 143)\",\n    \"chr48\": \"rgb(20, 255, 177)\",\n};\n\nclass ChordSetManager {\n\n    constructor(config) {\n        this.tracks = [];\n        this.chordSets = [];\n    }\n\n    addChordSet(chordSet) {\n\n        // If a chord set with this name exists replace it (same track, same region)\n        this.chordSets = this.chordSets.filter(g => g.name !== chordSet.name);\n        this.chordSets.push(chordSet);\n\n        let track = this.tracks.find(t => chordSet.trackName === t.name);\n        if (track) {\n            track.chordSets = track.chordSets.filter(cs => cs.name !== chordSet.name);\n            track.chordSets.push(chordSet);\n        }\n        if (!track) {\n            track = new IGVTrack(chordSet);\n            this.tracks.push(track);\n        }\n    }\n\n    clearChords() {\n        this.tracks = [];\n        this.chordSets = [];\n    }\n\n    getTrack(name) {\n        return this.tracks.find(t => name === t.name)\n    }\n\n    getChordSet(name) {\n        return this.chordSets.find(cs => name === cs.name)\n    }\n\n}\n\nclass IGVTrack {\n    constructor(chordSet) {\n        this.name = chordSet.trackName;\n        this.color = chordSet.trackColor;\n        this.visible = true;\n        this.chordSets = [chordSet];\n        this.id = guid$1();\n    }\n\n    get chords() {\n        if (this.chordSets.length === 1) {\n            return this.chordSets[0].chords\n        }\n        const chords = [];\n        for (let cs of this.chordSets) {\n            for (let c of cs.chords) {\n                chords.push(c);\n            }\n        }\n        return chords\n    }\n}\n\n\nfunction guid$1() {\n    return (\"0000\" + (Math.random() * Math.pow(36, 4) << 0).toString(36)).slice(-4)\n}\n\nconst EXP5 = Math.exp(5);\n\nclass CircularView {\n\n    static isInstalled() {\n        return window[\"JBrowseReactCircularGenomeView\"] !== undefined && window[\"React\"] !== undefined && window[\"ReactDOM\"] !== undefined\n    }\n\n    /**\n     * Create a new CircularView\n     *\n     * @param parent\n     * @param config - configuration options\n     *   {\n     *       assembly: {name: string, id: string, chromosomes: [{name: string, bpLength: integer, color: string}]\n     *       onChordClick: function called upon chord click with chord feature as argument\n     *   }\n     */\n    constructor(parent, config) {\n\n        config = config || {};\n        this.config = config;\n\n        if (CircularView.isInstalled()) {\n\n            this.parent = parent;\n            this.groupByTrack = config.groupByTrack === true;\n            this.chordManager = new ChordSetManager(config);\n\n            // wrapper for toolbar and circular-view container\n            const wrapper = document.createElement('div');\n            wrapper.className = 'igv-circview-container';\n            parent.appendChild(wrapper);\n\n            // toolbar\n            this.createControls(wrapper);\n            this.resetControlPanel();\n\n            // circular view container\n            const element = document.createElement('div');\n            element.className = 'igv-circview-circular-genome-view';\n            wrapper.appendChild(element);\n            this.container = element;\n\n            if (config.assembly) {\n                this.setAssembly(config.assembly);\n            }\n\n            this.width = config.width || 500;\n            this.height = config.height || 500;\n            this.setSize(this.width, this.height);\n\n        } else {\n            console.error(\"JBrowse circular view is not installed\");\n        }\n    }\n\n    createControls(parent) {\n\n        // toolbar\n        const toolbarDiv = document.createElement('div');\n        toolbarDiv.className = 'igv-circview-toolbar';\n        parent.appendChild(toolbarDiv);\n        this.toolbar = toolbarDiv;\n\n        // control panel\n        const controlPanelDiv = document.createElement('div');\n        controlPanelDiv.className = 'igv-circview-track-panel';\n        parent.appendChild(controlPanelDiv);\n        this.controlPanel = controlPanelDiv;\n        this.controlPanel.style.display = 'none';\n\n\n        // toolbar button container - Track Options - Clear All\n        const buttonContainer = document.createElement('div');\n        buttonContainer.className = 'igv-circview-toolbar-button-container';\n        this.toolbar.appendChild(buttonContainer);\n\n        // Show Controls\n        this.showControlsButton = document.createElement('div');\n        this.showControlsButton.className = 'igv-circview-button';\n        buttonContainer.appendChild(this.showControlsButton);\n        this.showControlsButton.innerText = 'none' === this.controlPanel.style.display ? 'Show Controls' : 'Hide Controls';\n        this.showControlsButton.addEventListener('click', (event) => {\n            const panelRows = this.controlPanel.querySelectorAll('div');\n            if (panelRows.length > 0) {\n                if ('none' === this.controlPanel.style.display) {\n                    this.controlPanel.style.display = 'flex';\n                    event.target.innerText = 'Hide Controls';\n                } else {\n                    this.controlPanel.style.display = 'none';\n                    event.target.innerText = 'Show Controls';\n                }\n            }\n        });\n\n        // Clear All\n        let button = document.createElement('div');\n        button.className = 'igv-circview-button';\n        buttonContainer.appendChild(button);\n        button.innerText = 'Clear All';\n        button.addEventListener('click', () => {\n            this.clearChords();\n        });\n\n        // Close\n        if (false !== this.config.showCloseButton) {\n            button = document.createElement('div');\n            button.className = 'igv-circview-button';\n            buttonContainer.appendChild(button);\n            button.innerText = 'Close';\n            button.addEventListener('click', () => {\n                this.visible = false;\n            });\n        }\n    }\n\n    resetControlPanel() {\n        this.controlPanel.innerHTML = '';\n        this.controlPanel.appendChild(this.createGroupByCB());\n        const chordSets = this.groupByTrack ? this.chordManager.tracks : this.chordManager.chordSets;\n        for(let cs of chordSets) {\n            this.addToControlPanel(cs);\n        }\n    }\n\n    createGroupByCB() {\n        const groupByCB = document.createElement('input');\n        groupByCB.type = 'checkbox';\n        groupByCB.id = 'groupByCB';\n        groupByCB.style.width = '1.4em';\n        groupByCB.style.height = '1.4em';\n        groupByCB.checked = this.groupByTrack;\n\n        groupByCB.onclick = (evt) => {\n            this.groupByTrack = evt.target.checked;\n            this.resetControlPanel();\n            this.render();\n        };\n\n        const groupByLabel = document.createElement('label');\n        groupByLabel.for = 'groupByCB';\n        groupByLabel.innerText = 'Group by track';\n        groupByLabel.style.color = 'black';\n        groupByLabel.style.paddingLeft = '10px';\n        const trackPanelRow = document.createElement('div');\n        trackPanelRow.style.width = '100%';\n        trackPanelRow.style.paddingTop = '5px';\n        trackPanelRow.style.paddingBottom = '5px';\n        trackPanelRow.style.background = 'rgb(216, 230, 234)';\n        trackPanelRow.appendChild(groupByCB);\n        trackPanelRow.appendChild(groupByLabel);\n        return trackPanelRow\n    }\n\n    addToControlPanel(chordSet) {\n\n        // single track row - container for hide-button | color-picker-swatch | track-name\n        const row = document.createElement('div');\n        this.controlPanel.appendChild(row);\n\n\n        // track hide|show\n        const hideShowButton = document.createElement('div');\n        hideShowButton.className = 'igv-circview-button';\n        row.appendChild(hideShowButton);\n        hideShowButton.innerText = true === chordSet.visible ? 'Hide' : 'Show';\n        hideShowButton.addEventListener('click', event => {\n            if (true === chordSet.visible) {\n                this.hideChordSet(chordSet.name);\n                event.target.innerText = \"Show\";\n            } else {\n                this.showChordSet(chordSet.name);\n                event.target.innerText = \"Hide\";\n            }\n        });\n\n        // The alpha range slider.  Create this here so we can reference it from the color picker\n        const alphaSlider = document.createElement('input');\n        const valueToAlpha = (value) => Math.exp(value / 200) / EXP5;\n        const alphaToValue = (alpha) => 200 * Math.log(alpha * EXP5);\n\n        // color\n        const colorPickerButton = document.createElement('div');\n        colorPickerButton.className = 'igv-circview-button';\n        colorPickerButton.innerHTML = '&nbsp;&nbsp;&nbsp;&nbsp;';   // <- important for button to size properly\n        row.appendChild(colorPickerButton);\n        colorPickerButton.style.backgroundColor = setAlpha(chordSet.color, 1);\n        const pickerConfig =\n            {\n                parent: colorPickerButton,\n                popup: 'right',\n                editorFormat: 'rgb',\n                color: chordSet.color,\n                onChange: ({rgbaString}) => {\n                    colorPickerButton.style.backgroundColor = setAlpha(rgbaString, 1);\n                    this.setColor(chordSet.name, rgbaString);\n                    alphaSlider.value = alphaToValue(getAlpha(chordSet.color));\n                }\n            };\n        const picker = new Picker(pickerConfig);\n\n        // alpha transparency\n        alphaSlider.setAttribute('title', 'Adjust transparency of arcs');\n        alphaSlider.type = 'range';\n        //alphaSlider.className = 'igv-circview-alpha-slider'\n        alphaSlider.style.width = '100px';\n        alphaSlider.style.marginRight = '10px';\n        alphaSlider.setAttribute('class', 'range');\n        alphaSlider.setAttribute('min', '0');\n        alphaSlider.setAttribute('max', '1000');\n        alphaSlider.value = alphaToValue(getAlpha(chordSet.color));\n        alphaSlider.oninput = () => {\n            const v = valueToAlpha(alphaSlider.value);\n            this.setColor(chordSet.name, setAlpha(chordSet.color, v));\n            picker.setColor(chordSet.color);\n        };\n        row.appendChild(alphaSlider);\n\n        // track name\n        const trackNameDive = document.createElement('div');\n        trackNameDive.style.color = 'black';\n        row.appendChild(trackNameDive);\n        trackNameDive.innerText = trackNameDive.title = chordSet.name;\n\n    }\n\n    /**\n     * Reset view with a new set of chromosomes.\n     *\n     * @param igvGenome {name: string, id: string, chromosomes: [{name: string, bpLength: integer, color: string}\n     */\n    setAssembly(igvGenome) {\n\n        const id = this.genomeId || guid();\n\n        if (this.genomeId === id) {\n            return\n        }\n        this.chordManager.clearChords();\n        this.genomeId = id;\n        this.chrNames = new Set(igvGenome.chromosomes.map(chr => shortChrName(chr.name)));\n\n        const regions = [];\n        const colors = [];\n        for (let chr of igvGenome.chromosomes) {\n            const shortName = shortChrName(chr.name);\n            colors.push(chr.color || getChrColor(shortName));\n            regions.push(\n                {\n                    refName: shortName,\n                    uniqueId: shortName,\n                    start: 0,\n                    end: chr.bpLength\n                }\n            );\n        }\n\n        this.assembly = {\n            name: igvGenome.name,\n            sequence: {\n                trackId: id,\n                type: 'ReferenceSequenceTrack',\n                adapter: {\n                    type: 'FromConfigSequenceAdapter',\n                    features: regions,\n                },\n            },\n            refNameColors: colors\n        };\n\n        this.render();\n\n    }\n\n    /**\n     * Append or replace current set of chords to the global set or a specific track.\n     *\n     * @param newChords array of chord feature objects.  Example:\n     * [\n     *   {\n     *     \"uniqueId\": \"chr1:129763372-129763376_chr1:129806775-129806790\",\n     *     \"color\": \"rgba(0, 0, 255, 0.1)\",\n     *     \"refName\": \"1\",\n     *     \"start\": 129763372,\n     *     \"end\": 129763376,\n     *     \"mate\": {\n     *       \"refName\": \"2\",\n     *       \"start\": 129806775,\n     *       \"end\": 129806790\n     *     }\n     *   }\n     * ]\n     * @param options {\n     *     name: string,    // Track name\n     *     color: string,   // Track color\n     *     append: boolean  // Replace or append chords to current set.  Default is append (true)\n     * }\n     */\n\n    addChords(newChords, options = {}) {\n\n        const tmp = options.name || options.track || \"*\";\n        const trackName = tmp.split(' ')[0].replaceAll(\"%20\", \" \");\n        const chordSetName = tmp.replaceAll(\"%20\", \" \");\n\n        const chordSet =  {\n            name: chordSetName,\n            trackName: trackName,\n            chords: newChords,\n            color: options.color || \"black\",\n            trackColor: options.trackColor || options.color || \"black\",\n            visible: true,\n            id: options.id || guid()\n        };\n\n        this.chordManager.addChordSet(chordSet);\n\n        this.resetControlPanel();\n\n        this.render();\n    }\n\n    /**\n     * Set the nominal size of the view in pixels.  Size is reduced some aribtrary amount to account for borders and margins\n     */\n    setSize(width, height) {\n\n        height = height || width;\n\n        this.width = width;\n        this.height = height;\n        if (this.viewState) {\n            const view = this.viewState.session.view;\n            view.setWidth(width);\n            view.setHeight(height /* this is the height of the area inside the border in pixels */);\n            view.setBpPerPx(view.minBpPerPx);\n        }\n    }\n\n    getSize() {\n        return Math.min(this.width, this.height)\n    }\n\n    clearChords() {\n        //this.tracks = []\n        this.chordManager.clearChords();\n        this.resetControlPanel();\n        this.render();\n    }\n\n    clearSelection() {\n        this.viewState.pluginManager.rootModel.session.clearSelection();\n    }\n\n    /**\n     * Deprecated, use \"visible\" property\n     */\n    show() {\n        this.parent.style.display = 'block';\n    }\n\n    /**\n     * Deprecated, use \"visible\" property\n     */\n    hide() {\n        this.parent.style.display = 'none';\n    }\n\n    get visible() {\n        return this.parent.style.display !== 'none'\n    }\n\n    set visible(isVisible) {\n        this.parent.style.display = isVisible ? 'block' : 'none';\n    }\n\n    hideChordSet(trackName) {\n        let cs = this.getChordSet(trackName);\n        if (cs) {\n            cs.visible = false;\n            this.render();\n        } else {\n            console.warn(`No track with name: ${name}`);\n        }\n    }\n\n    showChordSet(name) {\n        let cs = this.getChordSet(name);\n        if (cs) {\n            cs.visible = true;\n            this.render();\n        } else {\n            console.warn(`No track with name: ${name}`);\n        }\n    }\n\n    // showTrack(trackID) {\n    //     let idx = this.tracks.findIndex(t => trackID === t.id)\n    //     if (idx >= 0) {\n    //         const track = this.tracks[idx]\n    //         track.visible = true\n    //         this.tracks.splice(idx, 1)   // Change z-order\n    //         this.tracks.push(track)\n    //         this.render()\n    //     } else {\n    //         console.warn(`No track with name: ${name}`)\n    //     }\n    // }\n\n    // TODO -- remove corresponding row from track panel\n    deleteTrack(trackID) {\n        let idx = this.tracks.findIndex(t => trackID === t.name);\n        if (idx >= 0) {\n            this.tracks.splice(idx, 1);\n        }\n        this.render();\n    }\n\n    getChordSet(name) {\n        return this.groupByTrack ? this.chordManager.getTrack(name) : this.chordManager.getChordSet(name)\n    }\n\n    setColor(name, color) {\n        const t = this.getChordSet(name);\n        if (t) {\n            t.color = color;\n            const trackID = t.id;\n            for (let jbrowseTrack of this.viewState.config.tracks) {\n                if (trackID === jbrowseTrack.trackId) {\n                    jbrowseTrack.displays[0].renderer.strokeColor.set(color);\n                    break\n                }\n            }\n        }\n    }\n\n    /**\n     * The main render function.  Render here means build the React DOM.  Trying to change react state dynamically\n     * has been buggy, so we completely rebuild the DOM (\"render\") on any state change.\n     */\n    render() {\n\n        const {\n            createViewState,\n            JBrowseCircularGenomeView,\n        } = JBrowseReactCircularGenomeView;\n\n        // Remove all children from possible previous renders.  React might do this for us when we render, but just in case.\n        ReactDOM.unmountComponentAtNode(this.container);\n\n        const visibleChordSets =\n            (this.groupByTrack ? this.chordManager.tracks : this.chordManager.chordSets).filter(t => t.visible);\n\n        const jbrowseTracks = [];\n        const colors = [];\n\n        for (let chordSet of visibleChordSets) {\n\n            jbrowseTracks.push({\n                trackId: chordSet.id,\n                name: chordSet.name,\n                assemblyNames: ['forIGV'],\n                type: 'VariantTrack',\n                adapter: {\n                    type: 'FromConfigAdapter',\n                    features: chordSet.chords,\n                }\n            });\n            colors.push(chordSet.color);\n        }\n\n        this.viewState = createViewState({\n            assembly: this.assembly,\n            tracks: jbrowseTracks,\n        });\n\n        // Set view colors\n        for (let i = 0; i < visibleChordSets.length; i++) {\n            this.viewState.config.tracks[i].displays[0].renderer.strokeColor.set(colors[i]);\n            //this.viewState.config.tracks[i].displays[0].renderer.strokeColor.set(\"jexl:get(feature, 'color') || 'black'\");\n            //this.viewState.config.tracks[i].displays[0].renderer.strokeColorSelected.set(\"jexl:get(feature, 'highlightColor') || 'red'\");\n        }\n\n        this.element = React.createElement(JBrowseCircularGenomeView, {viewState: this.viewState});\n        this.setSize(this.width, this.height);\n\n        ReactDOM.render(this.element, this.container);\n\n        const onChordClick = this.config.onChordClick || defaultOnChordClick;\n        for (let i = 0; i < visibleChordSets.length; i++) {\n            this.viewState.session.view.showTrack(this.viewState.config.tracks[i].trackId);\n            if (onChordClick) {\n                this.viewState.pluginManager.jexl.addFunction('onChordClick', onChordClick);\n                this.viewState.config.tracks[i].displays[0].onChordClick.set(\n                    'jexl:onChordClick(feature, track, pluginManager)'\n                );\n            }\n        }\n    }\n}\n\nfunction setAlpha(rgba, alpha) {\n    const [a, b, c, ignore] = rgba.split(','); // rgba(r g b alpha)\n    return `${a},${b},${c},${alpha})`\n}\n\nfunction getAlpha(rgba) {\n    if (rgba.startsWith(\"rgba(\")) {\n        return Number(rgba.split(',')[3].replace(')', ''))\n    } else {\n        return 1\n    }\n}\n\nfunction shortChrName(chrName) {\n    return chrName.startsWith(\"chr\") ? chrName.substring(3) : chrName\n}\n\nfunction defaultOnChordClick(feature, chordTrack, pluginManager) {\n    console.log(feature);\n}\n\nfunction guid() {\n    return (\"0000\" + (Math.random() * Math.pow(36, 4) << 0).toString(36)).slice(-4)\n}\n\nfunction embedCSS() {\n\n    const css =  '.igv-circview-container {\\n  width: fit-content;\\n  height: fit-content;\\n  box-sizing: content-box;\\n  color: dimgray;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 12px;\\n  background-color: white;\\n  border-color: dimgray;\\n  border-style: solid;\\n  border-width: thin;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-start;\\n}\\n\\n.igv-circview-toolbar {\\n  position: relative;\\n  width: 100%;\\n  height: 32px;\\n  background-color: lightgrey;\\n  border-bottom-style: solid;\\n  border-bottom-color: dimgray;\\n  border-bottom-width: thin;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-between;\\n  align-items: center;\\n}\\n\\n.igv-circview-toolbar-button-container {\\n  height: 100%;\\n  width: fit-content;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-circview-toolbar-button-container > div {\\n  margin: 4px;\\n}\\n\\n.igv-circview-track-panel {\\n  z-index: 1024;\\n  position: absolute;\\n  top: 33px;\\n  left: 0;\\n  width: 100%;\\n  height: fit-content;\\n  border-bottom-style: solid;\\n  border-bottom-color: dimgray;\\n  border-bottom-width: thin;\\n  background-color: white;\\n  display: flex;\\n  flex-flow: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-start;\\n}\\n.igv-circview-track-panel > div {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-circview-track-panel > div > div {\\n  margin: 4px;\\n}\\n\\n.igv-circview-swatch-button {\\n  cursor: pointer;\\n  padding: 5px;\\n  width: 8px;\\n  height: 8px;\\n  border: 1px solid #8d8b8b;\\n  border-radius: 16px;\\n}\\n\\n.igv-circview-button {\\n  cursor: pointer;\\n  padding: 5px;\\n  color: #444;\\n  vertical-align: middle;\\n  text-align: center;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 12px;\\n  border: 1px solid #8d8b8b;\\n  border-radius: 4px;\\n  background: #efefef;\\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.2);\\n}\\n\\n.igv-circview-button:hover {\\n  background: #efefef;\\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.6);\\n}\\n\\n.igv-circview-button:active {\\n  color: #007bff;\\n  box-shadow: 0 0 5px -1px rgba(0, 0, 0, 0.6);\\n}\\n\\n/*# sourceMappingURL=circular-view.css.map */\\n';\n\n    const style = document.createElement('style');\n    style.setAttribute('type', 'text/css');\n    style.innerHTML = css;\n    document.head.insertBefore(style, document.head.childNodes[ document.head.childNodes.length - 1 ]);\n}\n\nif(typeof document !== 'undefined') {\n\n    if (!stylesheetExists(\"circular-view.css\")) {\n        embedCSS();\n    }\n\n    function stylesheetExists(stylesheetName) {\n        for (let ss of document.styleSheets) {\n            ss = ss.href ? ss.href.replace(/^.*[\\\\\\/]/, '') : '';\n            if (ss === stylesheetName) {\n                return true;\n            }\n        }\n        return false;\n    }\n}\n\nexport { CircularView };\n","import {getChrColor} from \"../bam/bamTrack.js\"\nimport Locus from \"../locus.js\"\nimport {CircularView} from \"../../node_modules/circular-view/dist/circular-view.js\"\nimport {createSupplementaryAlignments} from \"../bam/supplementaryAlignment.js\"\nimport {IGVColor} from \"../../node_modules/igv-utils/src/index.js\"\n\n/**\n * The minimum length for a VCF structural variant.  VCF records < this length are ignored in the circular view\n * @type {number}\n */\nconst MINIMUM_SV_LENGTH = 1000000\n\nconst circViewIsInstalled = () => CircularView.isInstalled()\n\nconst shortChrName = (chrName) => {\n    return chrName.startsWith(\"chr\") ? chrName.substring(3) : chrName\n}\n\nconst makePairedAlignmentChords = (alignments) => {\n\n    const chords = []\n    for (let a of alignments) {\n\n        if(a.paired) {\n            if(a.firstAlignment && a.secondAlignment) {\n                chords.push({\n                    uniqueId: a.readName,\n                    refName: shortChrName(a.firstAlignment.chr),\n                    start: a.firstAlignment.start,\n                    end: a.firstAlignment.end,\n                    mate: {\n                        refName: shortChrName(a.secondAlignment.chr),\n                        start: a.secondAlignment.start,\n                        end: a.secondAlignment.end,\n                    }\n                })\n            }\n        }\n        else {\n            const mate = a.mate\n            if (mate && mate.chr && mate.position) {\n                chords.push({\n                    uniqueId: a.readName,\n                    refName: shortChrName(a.chr),\n                    start: a.start,\n                    end: a.end,\n                    mate: {\n                        refName: shortChrName(mate.chr),\n                        start: mate.position - 1,\n                        end: mate.position,\n                    }\n                })\n            }\n        }\n    }\n    return chords\n}\n\nconst makeSupplementalAlignmentChords = (alignments) => {\n\n    const makeChords = (a) => {\n        const sa = a.tags()['SA']\n        const supAl = createSupplementaryAlignments(sa)\n        let n = 0\n        for (let s of supAl) {\n            if (s.start !== a.start) {\n                chords.push({\n                    uniqueId: `${a.readName}_${n++}`,\n                    refName: shortChrName(a.chr),\n                    start: a.start,\n                    end: a.end,\n                    mate: {\n                        refName: shortChrName(s.chr),\n                        start: s.start,\n                        end: s.start + s.lenOnRef\n                    }\n                })\n            }\n        }\n    }\n\n    const chords = []\n    for (let a of alignments) {\n        if(a.paired) {\n            makeChords(a.firstAlignment)\n            if(a.secondAlignment) {\n                makeChords(a.secondAlignment)\n            }\n        } else {\n            makeChords(a)\n        }\n    }\n    return chords\n}\n\nconst makeBedPEChords = (features) => {\n\n    return features.map(v => {\n\n        // If v is a whole-genome feature, get the true underlying variant.\n        const f = v._f || v\n\n        return {\n            uniqueId: `${f.chr1}:${f.start1}-${f.end1}_${f.chr2}:${f.start2}-${f.end2}`,\n            refName: shortChrName(f.chr1),\n            start: f.start1,\n            end: f.end1,\n            mate: {\n                refName: shortChrName(f.chr2),\n                start: f.start2,\n                end: f.end2,\n            }\n        }\n    })\n}\n\n\nconst makeVCFChords = (features) => {\n\n    const svFeatures = features.filter(v => {\n        const f = v._f || v\n        const isLargeEnough = f.info && f.info.CHR2 && f.info.END &&\n            (f.info.CHR2 !== f.chr || Math.abs(Number.parseInt(f.info.END) - f.pos) > MINIMUM_SV_LENGTH)\n        return isLargeEnough\n    })\n    return svFeatures.map(v => {\n\n        // If v is a whole-genome feature, get the true underlying variant.\n        const f = v._f || v\n\n        const pos2 = Number.parseInt(f.info.END)\n        const start2 = pos2 - 100\n        const end2 = pos2 + 100\n\n        return {\n            uniqueId: `${f.chr}:${f.start}-${f.end}_${f.info.CHR2}:${f.info.END}`,\n            refName: shortChrName(f.chr),\n            start: f.start,\n            end: f.end,\n            mate: {\n                refName: shortChrName(f.info.CHR2),\n                start: start2,\n                end: end2\n            }\n        }\n    })\n}\n\nfunction makeCircViewChromosomes(genome) {\n    const regions = []\n    const colors = []\n    for (let chrName of genome.wgChromosomeNames) {\n        const chr = genome.getChromosome(chrName)\n        colors.push(getChrColor(chr.name))\n        regions.push(\n            {\n                name: chr.name,\n                bpLength: chr.bpLength\n            }\n        )\n    }\n    return regions\n}\n\nfunction sendChords(chords, track, refFrame, alpha) {\n\n    const baseColor =  track.color || 'rgb(0,0,255)'\n\n    const chordSetColor = IGVColor.addAlpha(\"all\" === refFrame.chr ? baseColor : getChrColor(refFrame.chr), alpha)\n    const trackColor = IGVColor.addAlpha(baseColor, alpha)\n\n    // name the chord set to include locus and filtering information\n    const encodedName = track.name.replaceAll(' ', '%20')\n    const chordSetName = \"all\" === refFrame.chr ? encodedName :\n        `${encodedName}  ${refFrame.chr}:${refFrame.start}-${refFrame.end}`\n    track.browser.circularView.addChords(chords, {track: chordSetName, color: chordSetColor, trackColor: trackColor})\n\n    // show circular view if hidden\n    if(!track.browser.circularViewVisible) track.browser.circularViewVisible = true\n\n}\n\n\nfunction createCircularView(el, browser) {\n\n    const circularView = new CircularView(el, {\n\n        onChordClick: (feature, chordTrack, pluginManager) => {\n\n            const f1 = feature.data\n            const f2 = f1.mate\n            addFrameForFeature(f1)\n            addFrameForFeature(f2)\n\n            function addFrameForFeature(feature) {\n\n                feature.chr = browser.genome.getChromosomeName(feature.refName)\n                let frameFound = false\n                for (let referenceFrame of browser.referenceFrameList) {\n                    const l = Locus.fromLocusString(referenceFrame.getLocusString())\n                    if (l.contains(feature)) {\n                        frameFound = true\n                        break\n                    } else if (l.overlaps(feature)) {\n                        referenceFrame.extend(feature)\n                        frameFound = true\n                        break\n                    }\n                }\n                if (!frameFound) {\n                    const flanking = 2000\n                    const center = (feature.start + feature.end) / 2\n                    browser.addMultiLocusPanel(feature.chr, center - flanking, center + flanking)\n\n                }\n            }\n        }\n    })\n\n    return circularView\n}\n\nexport {\n    circViewIsInstalled,\n    makeBedPEChords,\n    makePairedAlignmentChords,\n    makeSupplementalAlignmentChords,\n    makeVCFChords,\n    createCircularView,\n    makeCircViewChromosomes,\n    sendChords\n}\n\n","class PairedEndStats {\n\n    constructor(alignments, {minTLENPercentile, maxTLENPercentile}) {\n        this.totalCount = 0\n        this.frCount = 0\n        this.rfCount = 0\n        this.ffCount = 0\n        this.sumF = 0\n        this.sumF2 = 0\n        this.lp = minTLENPercentile === undefined ? 0.1 : minTLENPercentile\n        this.up = maxTLENPercentile === undefined ? 99.5 : maxTLENPercentile\n        this.isizes = []\n        this.compute(alignments)\n    }\n\n    compute(alignments) {\n\n        for (let alignment of alignments) {\n            if (alignment.isProperPair()) {\n                var tlen = Math.abs(alignment.fragmentLength)\n                this.sumF += tlen\n                this.sumF2 += tlen * tlen\n                this.isizes.push(tlen)\n\n                var po = alignment.pairOrientation\n\n                if (typeof po === \"string\" && po.length === 4) {\n                    var tmp = '' + po.charAt(0) + po.charAt(2)\n                    switch (tmp) {\n                        case 'FF':\n                        case 'RR':\n                            this.ffCount++\n                            break\n                        case \"FR\":\n                            this.frCount++\n                            break\n                        case\"RF\":\n                            this.rfCount++\n                    }\n                }\n                this.totalCount++\n            }\n        }\n\n        if (this.ffCount / this.totalCount > 0.9) this.orienation = \"ff\"\n        else if (this.frCount / this.totalCount > 0.9) this.orienation = \"fr\"\n        else if (this.rfCount / this.totalCount > 0.9) this.orienation = \"rf\"\n\n        this.minTLEN = this.lp === 0 ? 0 : percentile(this.isizes, this.lp)\n        this.maxTLEN = percentile(this.isizes, this.up)\n\n        // var fMean = this.sumF / this.totalCount\n        // var stdDev = Math.sqrt((this.totalCount * this.sumF2 - this.sumF * this.sumF) / (this.totalCount * this.totalCount))\n        // this.minTLEN = fMean - 3 * stdDev\n        // this.maxTLEN = fMean + 3 * stdDev\n\n    }\n}\n\nfunction percentile(array, p) {\n\n    if (array.length === 0) return undefined\n    var k = Math.floor(array.length * (p / 100))\n    array.sort(function (a, b) {\n        return a - b\n    })\n    return array[k]\n\n}\n\nexport default PairedEndStats\n","import {igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst GtexUtils = {\n\n    getTissueInfo: function (datasetId, baseURL) {\n        datasetId = datasetId || 'gtex_v8'\n        baseURL = baseURL || 'https://gtexportal.org/rest/v1'\n        let url = baseURL + '/dataset/tissueInfo?datasetId=' + datasetId\n        return igvxhr.loadJson(url, {})\n    },\n\n    //https://gtexportal.org/rest/v1/association/singleTissueEqtlByLocation?chromosome=7&start=98358766&end=101523798&tissueName=Liver&datasetId=gtex_v7\n    //https://gtexportal.org/rest/v1/association/singleTissueEqtlByLocation?chromosome=7&start=98358766&end=101523798&tissueSiteDetailId=Liver&datasetId=gtex_v8\n    trackConfiguration: function (tissueSummary, baseURL) {\n        baseURL = baseURL || 'https://gtexportal.org/rest/v1'\n        return {\n            type: \"eqtl\",\n            sourceType: \"gtex-ws\",\n            url: baseURL + '/association/singleTissueEqtlByLocation',\n            tissueSiteDetailId: tissueSummary.tissueSiteDetailId,\n            name: (tissueSummary.tissueSiteDetailId.split('_').join(' ')),\n            visibilityWindow: 250000\n        }\n    }\n}\n\nexport default GtexUtils","import GtexUtils from \"../../gtex/gtexUtils.js\"\nimport IGVGraphics from \"../../igv-canvas.js\"\n\n/**\n * @param feature\n * @param bpStart  genomic location of the left edge of the current canvas\n * @param xScale  scale in base-pairs per pixel\n * @returns {{px: number, px1: number, pw: number, h: number, py: number}}\n */\nexport function calculateFeatureCoordinates(feature, bpStart, xScale) {\n    let px = (feature.start - bpStart) / xScale\n    let px1 = (feature.end - bpStart) / xScale\n    //px = Math.round((feature.start - bpStart) / xScale),\n    //px1 = Math.round((feature.end - bpStart) / xScale),\n    let pw = px1 - px\n\n    if (pw < 3) {\n        pw = 3\n        px -= 1.5\n    }\n\n    return {\n        px: px,\n        px1: px1,\n        pw: pw\n    }\n}\n\n/**\n *\n * @param feature\n * @param bpStart  genomic location of the left edge of the current canvas\n * @param xScale  scale in base-pairs per pixel\n * @param pixelHeight  pixel height of the current canvas\n * @param ctx  the canvas 2d context\n * @param options  genomic state\n */\nexport function renderFeature(feature, bpStart, xScale, pixelHeight, ctx, options) {\n\n    try {\n        ctx.save()\n\n        // Set ctx color to a known valid color.  If getColorForFeature returns an invalid color string it is ignored, and\n        // this default will be used.\n        ctx.fillStyle = this.color\n        ctx.strokeStyle = this.color\n\n        const color = this.getColorForFeature(feature)\n        ctx.fillStyle = color\n        ctx.strokeStyle = color\n\n        let h\n        let py\n        if (this.displayMode === \"SQUISHED\" && feature.row !== undefined) {\n            h = this.featureHeight / 2\n            py = this.margin + this.squishedRowHeight * feature.row\n        } else if (this.displayMode === \"EXPANDED\" && feature.row !== undefined) {\n            h = this.featureHeight\n            py = this.margin + this.expandedRowHeight * feature.row\n        } else {  // collapsed\n            h = this.featureHeight\n            py = this.margin\n        }\n\n        const pixelWidth = options.pixelWidth   // typical 3*viewportWidth\n\n        const cy = py + h / 2\n        const h2 = h / 2\n        const py2 = cy - h2 / 2\n\n        const exonCount = feature.exons ? feature.exons.length : 0\n        const coord = calculateFeatureCoordinates(feature, bpStart, xScale)\n        const step = this.arrowSpacing\n        const direction = feature.strand === '+' ? 1 : feature.strand === '-' ? -1 : 0\n\n        if (exonCount === 0) {\n            // single-exon transcript\n            const xLeft = Math.max(0, coord.px)\n            const xRight = Math.min(pixelWidth, coord.px1)\n            const width = xRight - xLeft\n            ctx.fillRect(xLeft, py, width, h)\n\n            // Arrows\n            // Do not draw if strand is not +/-\n            if (direction !== 0) {\n                ctx.fillStyle = \"white\"\n                ctx.strokeStyle = \"white\"\n                for (let x = xLeft + step / 2; x < xRight; x += step) {\n                    // draw arrowheads along central line indicating transcribed orientation\n                    IGVGraphics.strokeLine(ctx, x - direction * 2, cy - 2, x, cy)\n                    IGVGraphics.strokeLine(ctx, x - direction * 2, cy + 2, x, cy)\n                }\n                ctx.fillStyle = color\n                ctx.strokeStyle = color\n            }\n        } else {\n            // multi-exon transcript\n            IGVGraphics.strokeLine(ctx, coord.px + 1, cy, coord.px1 - 1, cy) // center line for introns\n\n\n            const xLeft = Math.max(0, coord.px) + step / 2\n            const xRight = Math.min(pixelWidth, coord.px1)\n            for (let x = xLeft; x < xRight; x += step) {\n                // draw arrowheads along central line indicating transcribed orientation\n                IGVGraphics.strokeLine(ctx, x - direction * 2, cy - 2, x, cy)\n                IGVGraphics.strokeLine(ctx, x - direction * 2, cy + 2, x, cy)\n            }\n            for (let e = 0; e < exonCount; e++) {\n                // draw the exons\n                const exon = feature.exons[e]\n                let ePx = Math.round((exon.start - bpStart) / xScale)\n                let ePx1 = Math.round((exon.end - bpStart) / xScale)\n                let ePw = Math.max(1, ePx1 - ePx)\n                let ePxU\n\n                if (ePx + ePw < 0) {\n                    continue  // Off the left edge\n                }\n                if (ePx > pixelWidth) {\n                    break // Off the right edge\n                }\n\n                if (exon.utr) {\n                    ctx.fillRect(ePx, py2, ePw, h2) // Entire exon is UTR\n                } else {\n                    if (exon.cdStart) {\n                        ePxU = Math.round((exon.cdStart - bpStart) / xScale)\n                        ctx.fillRect(ePx, py2, ePxU - ePx, h2) // start is UTR\n                        ePw -= (ePxU - ePx)\n                        ePx = ePxU\n\n                    }\n                    if (exon.cdEnd) {\n                        ePxU = Math.round((exon.cdEnd - bpStart) / xScale)\n                        ctx.fillRect(ePxU, py2, ePx1 - ePxU, h2) // start is UTR\n                        ePw -= (ePx1 - ePxU)\n                        ePx1 = ePxU\n                    }\n\n                    ePw = Math.max(ePw, 1)\n                    ctx.fillRect(ePx, py, ePw, h)\n\n                    // Arrows\n                    if (ePw > step + 5 && direction !== 0) {\n                        ctx.fillStyle = \"white\"\n                        ctx.strokeStyle = \"white\"\n                        for (let x = ePx + step / 2; x < ePx1; x += step) {\n                            // draw arrowheads along central line indicating transcribed orientation\n                            IGVGraphics.strokeLine(ctx, x - direction * 2, cy - 2, x, cy)\n                            IGVGraphics.strokeLine(ctx, x - direction * 2, cy + 2, x, cy)\n                        }\n                        ctx.fillStyle = color\n                        ctx.strokeStyle = color\n\n                    }\n                }\n            }\n        }\n\n        if (options.drawLabel && this.displayMode !== \"SQUISHED\") {\n            renderFeatureLabel.call(this, ctx, feature, coord.px, coord.px1, py, options.referenceFrame, options)\n        }\n    } finally {\n        ctx.restore()\n    }\n}\n\n/**\n * @param ctx       the canvas 2d context\n * @param feature\n * @param featureX  feature start in pixel coordinates\n * @param featureX1 feature end in pixel coordinates\n * @param featureY  feature y-coordinate\n * @param windowX   visible window start x-coordinate\n * @param windowX1  visible window end x-coordinate\n * @param referenceFrame  genomic state\n * @param options  options\n */\nfunction renderFeatureLabel(ctx, feature, featureX, featureX1, featureY, referenceFrame, options) {\n\n    try {\n        ctx.save()\n\n        let name = feature.name\n        if (name === undefined && feature.gene) name = feature.gene.name\n        if (name === undefined) name = feature.id || feature.ID\n        if (!name || name === '.') return\n\n\n        let pixelXOffset = options.pixelXOffset || 0\n        const t1 = Math.max(featureX, -pixelXOffset)\n        const t2 = Math.min(featureX1, -pixelXOffset + options.viewportWidth)\n        let centerX = (t1 + t2) / 2\n\n        let transform\n        if (this.displayMode === \"COLLAPSED\" && this.labelDisplayMode === \"SLANT\") {\n            transform = {rotate: {angle: 45}}\n        }\n        const labelY = getFeatureLabelY(featureY, transform)\n\n        let color = this.getColorForFeature(feature)\n        let geneColor\n        let gtexSelection = false\n        if (referenceFrame.selection && GtexUtils.gtexLoaded) {\n            // TODO -- for gtex, figure out a better way to do this\n            gtexSelection = true\n            geneColor = referenceFrame.selection.colorForGene(name)\n        }\n\n        const geneFontStyle = {\n            textAlign: \"SLANT\" === this.labelDisplayMode ? undefined : 'center',\n            fillStyle: geneColor || color,\n            strokeStyle: geneColor || color\n        }\n\n        const textBox = ctx.measureText(name)\n        const xleft = centerX - textBox.width / 2\n        const xright = centerX + textBox.width / 2\n        const lastLabelX = options.rowLastLabelX[feature.row] || -Number.MAX_SAFE_INTEGER\n        if (options.labelAllFeatures || xleft > lastLabelX || gtexSelection) {\n            options.rowLastLabelX[feature.row] = xright\n\n            if ('y' === options.axis) {\n                ctx.save()\n                IGVGraphics.labelTransformWithContext(ctx, centerX)\n                IGVGraphics.fillText(ctx, name, centerX, labelY, geneFontStyle, transform)\n                ctx.restore()\n            } else {\n                IGVGraphics.fillText(ctx, name, centerX, labelY, geneFontStyle, transform)\n            }\n        }\n\n    } finally {\n        ctx.restore()\n    }\n}\n\nfunction getFeatureLabelY(featureY, transform) {\n    return transform ? featureY + 20 : featureY + 25\n}\n\n\n","// SNP constants\nimport {calculateFeatureCoordinates} from \"./renderFeature.js\"\n\nconst codingNonSynonSet = new Set(['nonsense', 'missense', 'stop-loss', 'frameshift', 'cds-indel'])\nconst codingSynonSet = new Set(['coding-synon'])\nconst spliceSiteSet = new Set(['splice-3', 'splice-5'])\nconst untranslatedSet = new Set(['untranslated-5', 'untranslated-3'])\nconst locusSet = new Set(['near-gene-3', 'near-gene-5'])\nconst intronSet = new Set(['intron'])\n\n\n/**\n * Renderer for a UCSC snp track\n *\n * @param snp\n * @param bpStart  genomic location of the left edge of the current canvas\n * @param xScale  scale in base-pairs per pixel\n * @param pixelHeight  pixel height of the current canvas\n * @param ctx  the canvas 2d context\n */\nexport function renderSnp(snp, bpStart, xScale, pixelHeight, ctx) {\n\n    var coord = calculateFeatureCoordinates(snp, bpStart, xScale),\n        py = this.margin,\n        h,\n        colorArrLength = this.snpColors.length,\n        colorPriority\n\n    h = this.displayMode === \"squished\" ? this.squishedRowHeight : this.expandedRowHeight\n\n    switch (this.colorBy) {\n        case 'function':\n            colorPriority = colorByFunc(snp.func)\n            break\n        case 'class':\n            colorPriority = colorByClass(snp['class'])\n    }\n\n    ctx.fillStyle = this.snpColors[colorPriority]\n    ctx.fillRect(coord.px, py, coord.pw, h)\n\n    // Coloring functions, convert a value to a priority\n\n    function colorByFunc(theFunc) {\n        var priorities\n        var funcArray = theFunc.split(',')\n        // possible func values\n\n\n        priorities = funcArray.map(function (func) {\n            if (codingNonSynonSet.has(func) || spliceSiteSet.has(func)) {\n                return colorArrLength - 1\n            } else if (codingSynonSet.has(func)) {\n                return colorArrLength - 2\n            } else if (untranslatedSet.has(func)) {\n                return colorArrLength - 3\n            } else { // locusSet.has(func) || intronSet.has(func)\n                return 0\n            }\n        })\n\n        return priorities.reduce(function (a, b) {\n            return Math.max(a, b)\n        })\n    }\n\n    function colorByClass(cls) {\n        if (cls === 'deletion') {\n            return colorArrLength - 1\n        } else if (cls === 'mnp') {\n            return colorArrLength - 2\n        } else if (cls === 'microsatellite' || cls === 'named') {\n            return colorArrLength - 3\n        } else { // cls === 'single' || cls === 'in-del' || cls === 'insertion'\n            return 0\n        }\n    }\n}","/**\n *\n * @param feature\n * @param bpStart  genomic location of the left edge of the current canvas\n * @param xScale  scale in base-pairs per pixel\n * @param pixelHeight  pixel height of the current canvas\n * @param ctx  the canvas 2d context\n */\nexport function renderFusionJuncSpan(feature, bpStart, xScale, pixelHeight, ctx) {\n\n    const rowHeight = (this.displayMode === \"EXPANDED\") ? this.expandedRowHeight : this.squishedRowHeight\n    let py = this.margin\n    if (this.displayMode !== \"COLLAPSED\" && feature.row !== undefined) {\n        py += feature.row * rowHeight\n    }\n\n    const cy = py + 0.5 * rowHeight\n    const topY = cy - 0.5 * rowHeight\n    const bottomY = cy + 0.5 * rowHeight\n\n    // draw the junction arc\n    const junctionLeftPx = Math.round((feature.junction_left - bpStart) / xScale)\n    const junctionRightPx = Math.round((feature.junction_right - bpStart) / xScale)\n\n    ctx.beginPath()\n    ctx.moveTo(junctionLeftPx, cy)\n    ctx.bezierCurveTo(junctionLeftPx, topY, junctionRightPx, topY, junctionRightPx, cy)\n\n    ctx.lineWidth = 1 + Math.log(feature.num_junction_reads) / Math.log(2)\n    ctx.strokeStyle = 'blue'\n    ctx.stroke()\n\n    // draw the spanning arcs\n    const spanningCoords = feature.spanning_frag_coords\n    for (let i = 0; i < spanningCoords.length; i++) {\n\n        const spanningInfo = spanningCoords[i]\n        const spanLeftPx = Math.round((spanningInfo.left - bpStart) / xScale)\n        const spanRightPx = Math.round((spanningInfo.right - bpStart) / xScale)\n\n        ctx.beginPath()\n        ctx.moveTo(spanLeftPx, cy)\n        ctx.bezierCurveTo(spanLeftPx, bottomY, spanRightPx, bottomY, spanRightPx, cy)\n\n        ctx.lineWidth = 1\n        ctx.strokeStyle = 'purple'\n        ctx.stroke()\n    }\n}","import $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport FeatureSource from './featureSource.js'\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport {createCheckbox} from \"../igv-icons.js\"\nimport {reverseComplementSequence} from \"../util/sequenceUtils.js\"\nimport {renderFeature} from \"./render/renderFeature.js\"\nimport {renderSnp} from \"./render/renderSnp.js\"\nimport {renderFusionJuncSpan} from \"./render/renderFusionJunction.js\"\nimport {StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport {ColorTable, PaletteColorTable} from \"../util/colorPalletes.js\"\nimport {isSecureContext} from \"../util/igvUtils.js\"\nimport {IGVColor} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst DEFAULT_COLOR = 'rgb(0, 0, 150)'\n\n\nclass FeatureTrack extends TrackBase {\n\n    static defaults = {\n        type: \"annotation\",\n        maxRows: 1000, // protects against pathological feature packing cases (# of rows of overlapping feaures)\n        displayMode: \"EXPANDED\", // COLLAPSED | EXPANDED | SQUISHED\n        margin: 10,\n        featureHeight: 14,\n        autoHeight: false,\n        useScore: false\n    }\n\n\n    constructor(config, browser) {\n        super(config, browser)\n    }\n\n    init(config) {\n        super.init(config)\n\n\n        // Obscure option, not common or supoorted, included for backward compatibility\n        this.labelDisplayMode = config.labelDisplayMode\n\n        if (config._featureSource) {\n            this.featureSource = config._featureSource\n            delete config._featureSource\n        } else {\n            this.featureSource = config.featureSource ?\n                config.featureSource :\n                FeatureSource(config, this.browser.genome)\n        }\n\n        if (\"FusionJuncSpan\" === config.type) {\n            this.render = config.render || renderFusionJuncSpan\n            this.squishedRowHeight = config.squishedRowHeight || 50\n            this.expandedRowHeight = config.expandedRowHeight || 50\n            this.height = config.height || this.margin + 2 * this.expandedRowHeight\n        } else if ('snp' === config.type) {\n            this.render = config.render || renderSnp\n            // colors ordered based on priority least to greatest\n            this.snpColors = ['rgb(0,0,0)', 'rgb(0,0,255)', 'rgb(0,255,0)', 'rgb(255,0,0)']\n            this.colorBy = 'function'\n            this.expandedRowHeight = config.expandedRowHeight || 10\n            this.squishedRowHeight = config.squishedRowHeight || 5\n            this.height = config.height || 30\n        } else {\n            this.render = config.render || renderFeature\n            this.arrowSpacing = 30\n            // adjust label positions to make sure they're always visible\n            monitorTrackDrag(this)\n            this.squishedRowHeight = config.squishedRowHeight || 15\n            this.expandedRowHeight = config.expandedRowHeight || 30\n            this.height = config.height || this.margin + 2 * this.expandedRowHeight\n\n            // Set colorBy fields considering legacy options for backward compatibility\n            if (config.colorBy) {\n                if (config.colorBy.field) {\n                    config.colorTable = config.colorBy.pallete || config.colorBy.palette\n                    config.colorBy = config.colorBy.field\n                }\n                this.colorBy = config.colorBy   // Can be undefined => default\n                if (config.colorTable) {\n                    this.colorTable = new ColorTable(config.colorTable)\n                } else {\n                    this.colorTable = new PaletteColorTable(\"Set1\")\n                }\n            }\n        }\n    }\n\n    async postInit() {\n\n        if (typeof this.featureSource.getHeader === \"function\") {\n            this.header = await this.featureSource.getHeader()\n            if (this.disposed) return   // This track was removed during async load\n        }\n\n        // Set properties from track line\n        if (this.header) {\n            this.setTrackProperties(this.header)\n        }\n\n        if (this.visibilityWindow === undefined && typeof this.featureSource.defaultVisibilityWindow === 'function') {\n            this.visibilityWindow = await this.featureSource.defaultVisibilityWindow()\n        }\n\n        return this\n\n    }\n\n    get supportsWholeGenome() {\n        if (this.config.supportsWholeGenome !== undefined) {\n            return this.config.supportsWholeGenome\n        } else if (this.featureSource && typeof this.featureSource.supportsWholeGenome === 'function') {\n            return this.featureSource.supportsWholeGenome()\n        } else {\n            if (this.visibilityWindow === undefined && (this.config.indexed === false || !this.config.indexURL)) {\n                return true\n            }\n        }\n    }\n\n    async getFeatures(chr, start, end, bpPerPixel) {\n        const visibilityWindow = this.visibilityWindow\n        return this.featureSource.getFeatures({chr, start, end, bpPerPixel, visibilityWindow})\n    };\n\n\n    /**\n     * The required height in pixels required for the track content.   This is not the visible track height, which\n     * can be smaller (with a scrollbar) or larger.\n     *\n     * @param features\n     * @returns {*}\n     */\n    computePixelHeight(features) {\n\n        if (this.displayMode === \"COLLAPSED\") {\n            return this.margin + this.expandedRowHeight\n        } else {\n            let maxRow = 0\n            if (features && (typeof features.forEach === \"function\")) {\n                for (let feature of features) {\n                    if (feature.row && feature.row > maxRow) {\n                        maxRow = feature.row\n                    }\n                }\n            }\n\n            const height = this.margin + (maxRow + 1) * (\"SQUISHED\" === this.displayMode ? this.squishedRowHeight : this.expandedRowHeight)\n            return height\n\n        }\n    };\n\n    draw(options) {\n\n        const featureList = options.features\n        const ctx = options.context\n        const bpPerPixel = options.bpPerPixel\n        const bpStart = options.bpStart\n        const pixelWidth = options.pixelWidth\n        const pixelHeight = options.pixelHeight\n        const bpEnd = bpStart + pixelWidth * bpPerPixel + 1\n\n\n        if (!this.config.isMergedTrack) {\n            IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n        }\n\n        if (featureList) {\n\n            const rowFeatureCount = []\n            options.rowLastX = []\n            options.rowLastLabelX = []\n            for (let feature of featureList) {\n                if (feature.start > bpStart && feature.end < bpEnd) {\n                    const row = this.displayMode === \"COLLAPSED\" ? 0 : feature.row || 0\n                    if (rowFeatureCount[row] === undefined) {\n                        rowFeatureCount[row] = 1\n                    } else {\n                        rowFeatureCount[row]++\n                    }\n                    options.rowLastX[row] = -Number.MAX_SAFE_INTEGER\n                    options.rowLastLabelX[row] = -Number.MAX_SAFE_INTEGER\n                }\n            }\n            const maxFeatureCount = Math.max(1, Math.max(...rowFeatureCount))\n            const pixelsPerFeature = pixelWidth / maxFeatureCount\n\n            let lastPxEnd = []\n            for (let feature of featureList) {\n                if (feature.end < bpStart) continue\n                if (feature.start > bpEnd) break\n                const row = this.displayMode === 'COLLAPSED' ? 0 : feature.row\n                options.drawLabel = options.labelAllFeatures || pixelsPerFeature > 10\n                const pxEnd = Math.ceil((feature.end - bpStart) / bpPerPixel)\n                const last = lastPxEnd[row]\n                if (!last || pxEnd > last) {\n                    this.render.call(this, feature, bpStart, bpPerPixel, pixelHeight, ctx, options)\n\n                    // Ensure a visible gap between features\n                    const pxStart = Math.floor((feature.start - bpStart) / bpPerPixel)\n                    if (last && pxStart - last <= 0) {\n                        ctx.globalAlpha = 0.5\n                        IGVGraphics.strokeLine(ctx, pxStart, 0, pxStart, pixelHeight, {'strokeStyle': \"rgb(255, 255, 255)\"})\n                        ctx.globalAlpha = 1.0\n                    }\n                    lastPxEnd[row] = pxEnd\n                }\n            }\n\n        } else {\n            console.log(\"No feature list\")\n        }\n\n    };\n\n    clickedFeatures(clickState) {\n\n        const y = clickState.y - this.margin\n        const allFeatures = super.clickedFeatures(clickState)\n\n        let row\n        switch (this.displayMode) {\n            case 'SQUISHED':\n                row = Math.floor(y / this.squishedRowHeight)\n                break\n            case 'EXPANDED':\n                row = Math.floor(y / this.expandedRowHeight)\n                break\n            default:\n                row = undefined\n        }\n\n        return allFeatures.filter(function (feature) {\n            return (row === undefined || feature.row === undefined || row === feature.row)\n        })\n    }\n\n    /**\n     * Return \"popup data\" for feature @ genomic location.  Data is an array of key-value pairs\n     */\n    popupData(clickState, features) {\n\n        if (features === undefined) features = this.clickedFeatures(clickState)\n        const genomicLocation = clickState.genomicLocation\n        const data = []\n        for (let feature of features) {\n\n            // Whole genome hack, whole-genome psuedo features store the \"real\" feature in an _f field\n            const f = feature._f || feature\n\n            const featureData = (typeof f.popupData === \"function\") ?\n                f.popupData(genomicLocation) :\n                this.extractPopupData(f)\n\n            if (featureData) {\n\n                if (data.length > 0) {\n                    data.push(\"<hr/><hr/>\")\n                }\n\n                // If we have an infoURL, find the name property and create the link.  We do this at this level\n                // to catch name properties in both custom popupData functions and the generic extractPopupData function\n\n                const infoURL = this.infoURL || this.config.infoURL\n                for (let fd of featureData) {\n                    data.push(fd)\n                    if (infoURL &&\n                        fd.name &&\n                        fd.name.toLowerCase() === \"name\" &&\n                        fd.value &&\n                        StringUtils.isString(fd.value) &&\n                        !fd.value.startsWith(\"<\")) {\n                        const href = infoURL.replace(\"$$\", feature.name)\n                        fd.value = `<a target=_blank href=${href}>${fd.value}</a>`\n                    }\n                }\n\n\n                //Array.prototype.push.apply(data, featureData);\n\n                // If we have clicked over an exon number it.\n                // Disabled for GFF and GTF files if the visibility window is < the feature length since we don't know if we have all exons\n                const isGFF = \"gff\" === this.config.format || \"gff3\" === this.config.format || \"gtf\" === this.config.format\n                if (f.exons) {\n                    for (let i = 0; i < f.exons.length; i++) {\n                        const exon = f.exons[i]\n                        if (genomicLocation >= exon.start && genomicLocation <= exon.end) {\n                            const exonNumber = isGFF ?\n                                exon.number :\n                                f.strand === \"-\" ? f.exons.length - i : i + 1\n                            if (exonNumber) {\n                                data.push('<hr/>')\n                                data.push({name: \"Exon Number\", value: exonNumber})\n                            }\n                            break\n                        }\n                    }\n                }\n            }\n        }\n\n        return data\n\n    }\n\n    menuItemList() {\n\n        const menuItems = []\n\n        if (this.render === renderSnp) {\n            menuItems.push('<hr/>')\n            for (let colorScheme of [\"function\", \"class\"]) {\n                menuItems.push({\n                    object: $(createCheckbox('Color by ' + colorScheme, colorScheme === this.colorBy)),\n                    click: () => {\n                        this.colorBy = colorScheme\n                        this.trackView.repaintViews()\n                    }\n                })\n            }\n        }\n\n        menuItems.push('<hr/>')\n        for (let displayMode of [\"COLLAPSED\", \"SQUISHED\", \"EXPANDED\"]) {\n            const lut =\n                {\n                    \"COLLAPSED\": \"Collapse\",\n                    \"SQUISHED\": \"Squish\",\n                    \"EXPANDED\": \"Expand\"\n                }\n\n            menuItems.push(\n                {\n                    object: $(createCheckbox(lut[displayMode], displayMode === this.displayMode)),\n                    click: () => {\n                        this.displayMode = displayMode\n                        this.config.displayMode = displayMode\n                        this.trackView.checkContentHeight()\n                        this.trackView.repaintViews()\n                    }\n                })\n        }\n\n        return menuItems\n\n    };\n\n\n    contextMenuItemList(clickState) {\n\n        const features = this.clickedFeatures(clickState)\n\n        if (undefined === features || 0 === features.length) {\n            return undefined\n        }\n\n        if (features.length > 1) {\n            features.sort((a, b) => (b.end - b.start) - (a.end - a.start))\n        }\n        const f = features[0]   // The shortest clicked feature\n\n        if ((f.end - f.start) <= 1000000) {\n            const list = [{\n                label: 'View feature sequence',\n                click: async () => {\n                    let seq = await this.browser.genome.getSequence(f.chr, f.start, f.end)\n                    if (!seq) {\n                        seq = \"Unknown sequence\"\n                    } else if (f.strand === '-') {\n                        seq = reverseComplementSequence(seq)\n                    }\n                    this.browser.alert.present(seq)\n\n                }\n            }]\n\n            if (isSecureContext() && navigator.clipboard !== undefined) {\n                list.push(\n                    {\n                        label: 'Copy feature sequence',\n                        click: async () => {\n                            let seq = await this.browser.genome.getSequence(f.chr, f.start, f.end)\n                            if (!seq) {\n                                seq = \"Unknown sequence\"\n                            } else if (f.strand === '-') {\n                                seq = reverseComplementSequence(seq)\n                            }\n                            try {\n                                await navigator.clipboard.writeText(seq)\n                            } catch (e) {\n                                console.error(e)\n                                this.browser.alert.present(`error copying sequence to clipboard ${e}`)\n                            }\n                        }\n                    }\n                )\n            }\n            list.push('<hr/>')\n            return list\n        } else {\n            return undefined\n        }\n    }\n\n    description() {\n\n        // if('snp' === this.type) {\n        if (renderSnp === this.render) {\n            let desc = \"<html>\" + this.name + '<hr/>'\n            desc += '<em>Color By Function:</em><br>'\n            desc += '<span style=\"color:red\">Red</span>: Coding-Non-Synonymous, Splice Site<br>'\n            desc += '<span style=\"color:green\">Green</span>: Coding-Synonymous<br>'\n            desc += '<span style=\"color:blue\">Blue</span>: Untranslated<br>'\n            desc += '<span style=\"color:black\">Black</span>: Intron, Locus, Unknown<br><br>'\n            desc += '<em>Color By Class:</em><br>'\n            desc += '<span style=\"color:red\">Red</span>: Deletion<br>'\n            desc += '<span style=\"color:green\">Green</span>: MNP<br>'\n            desc += '<span style=\"color:blue\">Blue</span>: Microsatellite, Named<br>'\n            desc += '<span style=\"color:black\">Black</span>: Indel, Insertion, SNP'\n            desc += \"</html>\"\n            return desc\n        } else {\n            return super.description()\n        }\n\n    };\n\n    /**\n     * Return color for feature.\n     * @param feature\n     * @returns {string}\n     */\n\n    getColorForFeature(feature) {\n\n        let color\n        if (this.altColor && \"-\" === feature.strand) {\n            color = (typeof this.altColor === \"function\") ? this.altColor(feature) : this.altColor\n        } else if (this.color) {\n            color = (typeof this.color === \"function\") ? this.color(feature) : this.color  // Explicit setting via menu, or possibly track line if !config.color\n        } else if (this.colorBy) {\n            const value = feature.getAttributeValue ?\n                feature.getAttributeValue(this.colorBy) :\n                feature[this.colorBy]\n            color = this.colorTable.getColor(value)\n        } else if (feature.color) {\n            color = feature.color   // Explicit color for feature\n        }\n\n        // If no explicit setting use the default\n        if (!color) {\n            color = DEFAULT_COLOR   // Track default\n        }\n\n        if (feature.alpha && feature.alpha !== 1) {\n            color = IGVColor.addAlpha(color, feature.alpha)\n        } else if (this.useScore && feature.score && !Number.isNaN(feature.score)) {\n            // UCSC useScore option, for scores between 0-1000.  See https://genome.ucsc.edu/goldenPath/help/customTrack.html#TRACK\n            const min = this.config.min ? this.config.min : this.viewLimitMin ? this.viewLimitMin : 0\n            const max = this.config.max ? this.config.max : this.viewLimitMax ? this.viewLimitMax : 1000\n            const alpha = getAlpha(min, max, feature.score)\n            feature.alpha = alpha    // Avoid computing again\n            color = IGVColor.addAlpha(color, alpha)\n        }\n\n\n        function getAlpha(min, max, score) {\n            const binWidth = (max - min) / 9\n            const binNumber = Math.floor((score - min) / binWidth)\n            return Math.min(1.0, 0.2 + (binNumber * 0.8) / 9)\n        }\n\n        return color\n    }\n\n\n    /**\n     * Called when the track is removed.  Do any needed cleanup here\n     */\n    dispose() {\n        this.trackView = undefined\n    }\n}\n\n/**\n * Monitors track drag events, updates label position to ensure that they're always visible.\n * @param track\n */\nfunction monitorTrackDrag(track) {\n\n    if (track.browser.on) {\n        track.browser.on('trackdragend', onDragEnd)\n        track.browser.on('trackremoved', unSubscribe)\n    }\n\n    function onDragEnd() {\n        if (track.trackView && track.displayMode !== \"SQUISHED\") {\n            track.trackView.updateViews()      // TODO -- refine this to the viewport that was dragged after DOM refactor\n        }\n    }\n\n    function unSubscribe(removedTrack) {\n        if (track.browser.un && track === removedTrack) {\n            track.browser.un('trackdragend', onDragEnd)\n            track.browser.un('trackremoved', unSubscribe)\n        }\n    }\n\n}\n\n\nexport default FeatureTrack\n","import { DOMUtils, makeDraggable, Icon } from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass RegionTableBase {\n    constructor(config) {\n\n        this.config = config\n\n        this.browser = config.browser\n\n        this.columnFormat = config.columnFormat\n\n        this.tableRowSelectionList = []\n\n        this.tableDOM = DOMUtils.div({ class: 'igv-roi-table' })\n        // if(config.width) {\n        //     let [ w ] = config.width.split('px')\n        //     w = parseInt(w, 10)\n        //     this.tableDOM.style.width = `${Math.min(w, 1600)}px`\n        //\n        // }\n\n        config.parent.appendChild(this.tableDOM)\n\n        this.headerDOM = config\n\n        this.tableColumnTitles = this.tableDOM\n\n        this.tableRowContainer = this.tableDOM\n\n        this.footerDOM = config.gotoButtonHandler\n\n    }\n\n    set headerDOM({ browser, parent, headerTitle, dismissHandler }) {\n\n        // header\n        const dom = DOMUtils.div()\n        this.tableDOM.appendChild(dom)\n\n        // header title\n        const div = DOMUtils.div()\n        dom.appendChild(div)\n        div.innerHTML = headerTitle\n\n        // table dismiss button\n        const dismiss = DOMUtils.div()\n        dom.appendChild(dismiss)\n        dismiss.appendChild(Icon.createIcon('times'))\n\n        this.boundDismissHandler = mouseClickHandler.bind(this)\n\n        dismiss.addEventListener('click', this.boundDismissHandler)\n\n        function mouseClickHandler (event) {\n            event.stopPropagation()\n            dismissHandler()\n        }\n\n        const { y:y_root } = browser.root.getBoundingClientRect()\n        const { y:y_parent } = parent.getBoundingClientRect()\n        const constraint = -(y_parent - y_root)\n        makeDraggable(this.tableDOM, dom, { minX:0, minY:constraint })\n\n        this.tableDOM.style.display = 'none'\n\n        this._headerDOM = dom\n\n    }\n\n    set tableColumnTitles(tableDOM) {\n\n        const tblColumnTitles = DOMUtils.div({ class: 'igv-roi-table-column-titles' })\n        tableDOM.appendChild(tblColumnTitles)\n\n        for (const { label, width } of this.columnFormat) {\n            const col = DOMUtils.div()\n            tblColumnTitles.appendChild(col)\n            col.style.width = width\n            col.innerText = label\n        }\n\n        this._tableColumnTitlesDOM = tblColumnTitles\n\n    }\n\n    get tableColumnTitles() {\n        return this._tableColumnTitlesDOM\n    }\n\n    set tableRowContainer(container) {\n\n        const tblRowContainer = DOMUtils.div({ class: 'igv-roi-table-row-container' })\n        container.appendChild(tblRowContainer)\n\n        this._tableRowContainerDOM = tblRowContainer\n\n    }\n\n    get tableRowContainer() {\n        return this._tableRowContainerDOM\n    }\n\n    set footerDOM(gotoButtonHandler) {\n\n        const dom = DOMUtils.div()\n        this.tableDOM.appendChild(dom)\n\n        // Go To Button\n        const gotoButton = DOMUtils.div({class: 'igv-roi-table-button'})\n        dom.appendChild(gotoButton)\n\n        gotoButton.id = 'igv-roi-table-view-button'\n        gotoButton.textContent = 'Go To'\n        gotoButton.style.pointerEvents = 'none'\n\n        this._footerDOM = dom\n\n        this.gotoButton = gotoButton\n\n        this.boundGotoButtonHandler = gotoButtonHandler.bind(this)\n\n        this.gotoButton.addEventListener('click', this.boundGotoButtonHandler)\n\n    }\n\n    tableRowDOMHelper(dom) {\n\n        dom.addEventListener('mousedown', event => {\n            event.stopPropagation()\n\n            dom.classList.toggle('igv-roi-table-row-selected')\n            dom.classList.contains('igv-roi-table-row-selected') ? dom.classList.remove('igv-roi-table-row-hover') : dom.classList.add('igv-roi-table-row-hover')\n\n            this.setTableRowSelectionState(dom.classList.contains('igv-roi-table-row-selected'))\n        })\n\n        dom.addEventListener('mouseover', e => {\n            dom.classList.contains('igv-roi-table-row-selected') ? dom.classList.remove('igv-roi-table-row-hover') : dom.classList.add('igv-roi-table-row-hover')\n        })\n\n        dom.addEventListener('mouseout', e => {\n            dom.classList.remove('igv-roi-table-row-hover')\n        })\n\n    }\n\n    clearTable() {\n        const elements = this.tableRowContainer.querySelectorAll('.igv-roi-table-row')\n        for (let el of elements) {\n            el.remove()\n        }\n    }\n\n    setTableRowSelectionState(isTableRowSelected) {\n        isTableRowSelected ? this.tableRowSelectionList.push(1) : this.tableRowSelectionList.pop()\n        this.gotoButton.style.pointerEvents = this.tableRowSelectionList.length > 0 ? 'auto' : 'none'\n    }\n\n    present() {\n        this.tableDOM.style.left = `${ 0 }px`\n\n        const { y:y_root } = this.browser.root.getBoundingClientRect()\n        const { y:y_parent } = this.config.parent.getBoundingClientRect()\n\n        this.tableDOM.style.top  = `${ y_root - y_parent }px`\n        this.tableDOM.style.display = 'flex'\n    }\n\n    dismiss() {\n        this.tableDOM.style.display = 'none'\n    }\n\n    dispose() {\n\n        this.tableDOM.innerHTML = ''\n        this.tableDOM.remove()\n\n        for (const key of Object.keys(this)) {\n            this[key] = undefined\n        }\n\n        document.removeEventListener('click', this.boundDismissHandler)\n\n    }\n\n}\n\nexport default RegionTableBase\n","import { DOMUtils } from '../../node_modules/igv-ui/dist/igv-ui.js'\nimport { StringUtils } from '../../node_modules/igv-utils/src/index.js'\n\nimport RegionTableBase from '../ui/regionTableBase.js'\n\nclass BlatTable extends RegionTableBase {\n\n    constructor(config) {\n\n        const cooked = Object.assign({ 'width':'1024px' }, config)\n        super(cooked)\n\n        this.descriptionDOM = config\n\n    }\n\n    set descriptionDOM(config) {\n\n        if (config.description) {\n\n            let dom\n\n            // BLAT result for query sequence\n            dom = DOMUtils.div({ class: 'igv-roi-table-description' })\n            this.tableDOM.insertBefore(dom, this.tableColumnTitles)\n            dom.style.height = 'auto'\n            dom.innerHTML = `BLAT result for query sequence:`\n\n            // CTAATCAtctacactggtttctactg ...\n            dom = DOMUtils.div({ class: 'igv-roi-table-description' })\n            this.tableDOM.insertBefore(dom, this.tableColumnTitles)\n            dom.style.height = 'auto'\n            dom.style.maxHeight = '128px'\n            dom.innerHTML = config.description\n\n            // Select one or more rows ...\n            dom = DOMUtils.div({ class: 'igv-roi-table-goto-explainer' })\n            this.tableDOM.insertBefore(dom, this.tableColumnTitles)\n            dom.innerHTML = `Select one or more rows and click Go To to view the regions`\n\n        }\n\n    }\n\n    tableRowDOM(record) {\n\n        const dom = DOMUtils.div({ class: 'igv-roi-table-row' })\n\n        const pretty = record.map(item => isFinite(item) ? StringUtils.numberFormatter(item) : item)\n\n        for (let i = 0; i < pretty.length; i++) {\n\n            const el = DOMUtils.div()\n            dom.appendChild(el)\n\n            const format = this.columnFormat[ i ]\n            el.style.width = format.width || 'fit-content'\n            el.innerText = pretty[ i ]\n        }\n\n        this.tableRowDOMHelper(dom)\n\n        return dom\n    }\n\n    renderTable(records) {\n\n        Array.from(this.tableRowContainer.querySelectorAll('.igv-roi-table-row')).forEach(el => el.remove())\n\n        if (records.length > 0) {\n\n            for (let record of records) {\n                const row = this.tableRowDOM(record)\n                this.tableRowContainer.appendChild(row)\n            }\n\n        }\n\n    }\n\n    static getColumnFormatConfiguration() {\n\n        /*\n        return [\n            { label:         'chr', width: '60px' },\n            { label:       'start', width: '100px' },\n            { label:         'end', width: '100px' },\n            { label:      'strand', width: '50px' },\n            { label:       'score', width: '50px' },\n            { label:       'match', width: '50px' },\n            { label:   \"mis-match\", width: '70px' },\n            { label:  \"rep. match\", width: '70px' },\n            { label:         \"N's\", width: '32px' },\n            { label: 'Q gap count', width: '90px' },\n            { label: 'Q gap bases', width: '90px' },\n            { label: 'T gap count', width: '90px' },\n            { label: 'T gap bases', width: '90px' },\n        ]\n        */\n\n        return [\n            { label:         'chr', width: '7%' },\n            { label:       'start', width: '12%' },\n            { label:         'end', width: '12%' },\n            { label:      'strand', width: '5%' },\n            { label:       'score', width: '5%' },\n            { label:       'match', width: '5%' },\n            { label:   \"mis-match\", width: '7%' },\n            { label:  \"rep. match\", width: '7%' },\n            { label:         \"N's\", width: '3%' },\n            { label: 'Q gap count', width: '9%' },\n            { label: 'Q gap bases', width: '9%' },\n            { label: 'T gap count', width: '9%' },\n            { label: 'T gap bases', width: '9%' },\n        ]\n    }\n\n    static gotoButtonHandler (event) {\n\n        event.stopPropagation()\n\n        const selectedRows = this.tableDOM.querySelectorAll('.igv-roi-table-row-selected')\n\n        const loci = []\n        for (const row of selectedRows) {\n\n            const record = []\n            row.querySelectorAll('div').forEach(el => record.push(el.innerText))\n\n            const [ chr, start, end ] = record\n            loci.push(`${ chr }:${ start }-${ end }`)\n        }\n\n        for (const el of this.tableDOM.querySelectorAll('.igv-roi-table-row')) {\n            el.classList.remove('igv-roi-table-row-selected')\n        }\n\n        this.setTableRowSelectionState(false)\n\n        this.browser.search(loci.join(' '))\n\n        // console.log(`browser search( ${loci.join(' ')} )`)\n\n    }\n\n}\n\nexport default BlatTable\n","/*\nhttp://genome.ucsc.edu/cgi-bin/hgBlat\n?userSeq=CTAATCAtctacactggtttctactgaaatgtctgttgtcatagacttaattgtgtcttcagatacagcagttctgttatttctgagttttacctggggcaagagaatctttagcaagtttaaaggcacctatatctggaatcacccctccctccagatgaatatcacagactctcccattaaaggtcttgccTTCCTTGATAGCATCATCACTCCA\n&type=DNA\n&db=hg38\n&output=json\n */\n\nimport {decodePSL} from \"../feature/decode/ucsc.js\"\n\n//const blatServer = \"https://genome.ucsc.edu/cgi-bin/hgBlat\"\nconst defaultBlatServer = \"https://igv.org/services/blatUCSC.php\"\n//const blatServer = \"http://localhost:8000/blatUCSC.php\"\n\n\nasync function blat({url, userSeq, db}) {\n\n    url = url || defaultBlatServer\n\n    const results = await postData(url, userSeq, db)\n\n    const fields = results.fields\n\n    const features = results.blat.map(decodePSL)\n\n    return features\n}\n\nasync function postData(url = \"\", userSeq, db) {\n\n    const data = new URLSearchParams();\n    data.append(\"userSeq\", userSeq);\n    data.append(\"db\", db);\n\n    const response = await fetch(url, { method: \"post\", body: data })\n    return response.json(); // parses JSON response into native JavaScript objects\n}\n\n\n\nexport {blat}\n","import FeatureTrack from \"../feature/featureTrack.js\"\nimport BlatTable from \"./blatTable.js\"\nimport {blat} from \"./blatClient.js\"\n\nconst maxSequenceSize = 25000\n\nclass BlatTrack extends FeatureTrack {\n\n    constructor(config, browser) {\n        super(config, browser)\n        if (!this.name) {\n            this.name = 'Blat Results'\n        }\n        this.sequence = config.sequence\n        this.table = undefined\n    }\n\n    openTableView() {\n\n        if (undefined === this.table) {\n\n            const rows = this.config.features.map(f => [\n                f.chr,\n                (f.start + 1),\n                f.end,\n                f.strand,\n                f.score,\n                f.matches,\n                f.misMatches,\n                f.repMatches,\n                f.nCount,\n                f.qNumInsert,\n                f.qBaseInsert,\n                f.tNumInsert,\n                f.tBaseInsert\n            ])\n\n            const config =\n                {\n                    browser: this.browser,\n                    parent: this.browser.parent,\n                    headerTitle: this.config.title,\n                    description: this.sequence,\n                    dismissHandler: () => {\n                        this.table.dismiss()\n                        this.table.dispose()\n                        this.table = undefined\n                    },\n                    columnFormat: BlatTable.getColumnFormatConfiguration(),\n                    gotoButtonHandler: BlatTable.gotoButtonHandler\n                }\n\n            this.table = new BlatTable(config)\n            this.table.renderTable(rows)\n        }\n\n        this.table.present()\n\n    }\n\n    menuItemList() {\n\n        const menuItems = super.menuItemList()\n\n        menuItems.push('<hr/>')\n        menuItems.push({\n            label: 'Open table view',\n            click: () => this.openTableView()\n        })\n        return menuItems\n    }\n\n\n    /**\n     * Track has been permanently removed.  Release resources and other cleanup\n     */\n    dispose() {\n        super.dispose()\n        // Release DOM element for table\n        if (this.table) {\n            this.table.popover.parentElement.removeChild(this.table.popover)\n\n        }\n\n\n    }\n}\n\n\nasync function createBlatTrack({sequence, browser, name, title}) {\n\n    if (sequence.length > maxSequenceSize) {\n        browser.alert.present(`Sequence size exceeds maximum allowed length (${sequence.length} > ${maxSequenceSize})`)\n        return\n    }\n\n    const db = browser.genome.id   // TODO -- blat specific property\n\n    const url = browser.config[\"blatServerURL\"]\n\n    try {\n\n        const features = await blat({url, userSeq: sequence, db})\n        const trackConfig = {\n            type: 'blat',\n            name: name || 'blat results',\n            title: title || 'blat results',\n            sequence: sequence,\n            altColor: 'rgb(176, 176, 236)',\n            color: 'rgb(236, 176, 176)',\n            features: features\n        }\n\n        const track = await browser.loadTrack(trackConfig)\n        track.openTableView()\n\n    } catch (e) {\n        browser.alert.present(`Error performing blat search:  ${e}`)\n    }\n\n}\n\nexport default BlatTrack\nexport {createBlatTrack, maxSequenceSize}\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport BamSource from \"./bamSource.js\"\nimport PairedAlignment from \"./pairedAlignment.js\"\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport paintAxis from \"../util/paintAxis.js\"\nimport {createCheckbox} from \"../igv-icons.js\"\nimport MenuUtils from \"../ui/menuUtils.js\"\nimport {PaletteColorTable} from \"../util/colorPalletes.js\"\nimport {IGVColor, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport {makePairedAlignmentChords, makeSupplementalAlignmentChords, sendChords} from \"../jbrowse/circularViewUtils.js\"\nimport {isSecureContext} from \"../util/igvUtils.js\"\nimport PairedEndStats from \"./pairedEndStats.js\"\nimport {createBlatTrack, maxSequenceSize} from \"../blat/blatTrack.js\"\nimport {reverseComplementSequence} from \"../util/sequenceUtils.js\"\n\nconst alignmentStartGap = 5\nconst downsampleRowHeight = 5\nconst DEFAULT_ALIGNMENT_COLOR = \"rgb(185, 185, 185)\"\nconst DEFAULT_COVERAGE_COLOR = \"rgb(150, 150, 150)\"\nconst DEFAULT_CONNECTOR_COLOR = \"rgb(200, 200, 200)\"\nconst MINIMUM_BLAT_LENGTH = 20\n\nclass BAMTrack extends TrackBase {\n\n    static defaults = {\n        alleleFreqThreshold: 0.2,\n        visibilityWindow: 30000,\n        showCoverage: true,\n        showAlignments: true,\n        viewAsPairs: false,\n        pairsSupported: true,\n        showSoftClips: false,\n        showAllBases: false,\n        showInsertions: true,\n        showMismatches: true,\n        height: 300,\n        coverageTrackHeight: 50\n    }\n\n    constructor(config, browser) {\n        super(config, browser)\n    }\n\n    init(config) {\n\n        this.type = \"alignment\"\n        this.featureSource = new BamSource(config, this.browser)\n        this.coverageTrack = new CoverageTrack(config, this)\n        this.alignmentTrack = new AlignmentTrack(config, this)\n\n        super.init(config)\n\n        this.alignmentTrack.setTop(this.coverageTrack, this.showCoverage)\n\n        if(!this.showAlignments) {\n            this._height = this.coverageTrackHeight\n        }\n\n        // The sort object can be an array in the case of multi-locus view, however if multiple sort positions\n        // are present for a given reference frame the last one will take precedence\n        if (config.sort) {\n            if (Array.isArray(config.sort)) {\n                // Legacy support\n                this.assignSort(config.sort[0])\n            } else {\n                this.assignSort(config.sort)\n            }\n        }\n\n    }\n\n    set height(h) {\n        this._height = h\n        if (this.showAlignments) {\n            this.alignmentTrack.height = this.showCoverage ? h - this.coverageTrackHeight : h\n        }\n    }\n\n    get height() {\n        return this._height\n    }\n\n    get minTemplateLength() {\n        const configMinTLEN = this.config.minTLEN !== undefined ? this.config.minTLEN : this.config.minFragmentLength\n        return (configMinTLEN !== undefined) ? configMinTLEN :\n            this._pairedEndStats ? this._pairedEndStats.minTLEN : 0\n    }\n\n    get maxTemplateLength() {\n        const configMaxTLEN = this.config.maxTLEN !== undefined ? this.config.maxTLEN : this.config.maxFragmentLength\n        return (configMaxTLEN !== undefined) ? configMaxTLEN :\n            this._pairedEndStats ? this._pairedEndStats.maxTLEN : 1000\n    }\n\n    sort(options) {\n        options = this.assignSort(options)\n\n        for (let vp of this.trackView.viewports) {\n            if (vp.containsPosition(options.chr, options.position)) {\n                const alignmentContainer = vp.cachedFeatures\n                if (alignmentContainer) {\n                    alignmentContainer.sortRows(options)\n                    vp.repaint()\n                }\n            }\n        }\n    }\n\n    /**\n     * Fix syntax problems for sort options.\n     * @param options\n     */\n    assignSort(options) {\n        // convert old syntax\n        if (options.locus) {\n            const range = StringUtils.parseLocusString(options.locus)\n            options.chr = range.chr\n            options.position = range.start\n        } else {\n            options.position--\n        }\n        options.direction = options.direction === \"ASC\" || options.direction === true\n\n        // chr aliasing\n        options.chr = this.browser.genome.getChromosomeName(options.chr)\n        this.sortObject = options\n\n        return this.sortObject\n    }\n\n    async getFeatures(chr, bpStart, bpEnd, bpPerPixel, viewport) {\n\n        const alignmentContainer = await this.featureSource.getAlignments(chr, bpStart, bpEnd)\n\n        if (alignmentContainer.paired && !this._pairedEndStats && !this.config.maxFragmentLength) {\n            const pairedEndStats = new PairedEndStats(alignmentContainer.alignments, this.config)\n            if (pairedEndStats.totalCount > 99) {\n                this._pairedEndStats = pairedEndStats\n            }\n        }\n        alignmentContainer.alignments = undefined  // Don't need to hold onto these anymore\n\n        const sort = this.sortObject\n        if (sort) {\n            if (sort.chr === chr && sort.position >= bpStart && sort.position <= bpEnd) {\n                alignmentContainer.sortRows(sort)\n            }\n        }\n\n        return alignmentContainer\n    }\n\n\n    /**\n     * Compute the pixel height required to display all content.  This is not the same as the viewport height\n     * (track.height) which might include a scrollbar.\n     *\n     * @param alignmentContainer\n     * @returns {number}\n     */\n    computePixelHeight(alignmentContainer) {\n        return (this.showCoverage ? this.coverageTrackHeight : 0) +\n            (this.showAlignments ? this.alignmentTrack.computePixelHeight(alignmentContainer) : 0)\n    }\n\n    draw(options) {\n\n        IGVGraphics.fillRect(options.context, 0, options.pixelTop, options.pixelWidth, options.pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n\n        if (true === this.showCoverage && this.coverageTrackHeight > 0) {\n            this.trackView.axisCanvas.style.display = 'block'\n            this.coverageTrack.draw(options)\n        } else {\n            this.trackView.axisCanvas.style.display = 'none'\n        }\n\n        if (true === this.showAlignments) {\n            this.alignmentTrack.setTop(this.coverageTrack, this.showCoverage)\n            this.alignmentTrack.draw(options)\n        }\n    }\n\n    paintAxis(ctx, pixelWidth, pixelHeight) {\n\n        this.coverageTrack.paintAxis(ctx, pixelWidth, this.coverageTrackHeight)\n\n        // if (this.browser.isMultiLocusMode()) {\n        //     ctx.clearRect(0, 0, pixelWidth, pixelHeight);\n        // } else {\n        //     this.coverageTrack.paintAxis(ctx, pixelWidth, this.coverageTrackHeight);\n        // }\n    }\n\n    contextMenuItemList(config) {\n        return this.alignmentTrack.contextMenuItemList(config)\n    }\n\n    popupData(clickState) {\n        if (true === this.showCoverage && clickState.y >= this.coverageTrack.top && clickState.y < this.coverageTrackHeight) {\n            return this.coverageTrack.popupData(clickState)\n        } else {\n            return this.alignmentTrack.popupData(clickState)\n        }\n    }\n\n    /**\n     * Return the features (alignment, coverage, downsampled interval) clicked on.  Needed for \"onclick\" event.\n     * @param clickState\n     * @param features\n     */\n    clickedFeatures(clickState) {\n\n        let clickedObject\n        if (true === this.showCoverage && clickState.y >= this.coverageTrack.top && clickState.y < this.coverageTrackHeight) {\n            clickedObject = this.coverageTrack.getClickedObject(clickState)\n        } else {\n            clickedObject = this.alignmentTrack.getClickedObject(clickState)\n        }\n        return clickedObject ? [clickedObject] : undefined\n    }\n\n    hoverText(clickState) {\n        if (true === this.showCoverage && clickState.y >= this.coverageTrack.top && clickState.y < this.coverageTrackHeight) {\n            const clickedObject = this.coverageTrack.getClickedObject(clickState)\n            if (clickedObject) {\n                return clickedObject.hoverText()\n            }\n        }\n\n    }\n\n    menuItemList() {\n\n\n        // Start with overage track items\n        let menuItems = []\n\n        menuItems = menuItems.concat(MenuUtils.numericDataMenuItems(this.trackView))\n\n        // Color by items\n        menuItems.push('<hr/>')\n        const $e = $('<div class=\"igv-track-menu-category\">')\n        $e.text('Color by:')\n        menuItems.push({name: undefined, object: $e, click: undefined, init: undefined})\n\n        const colorByMenuItems = [{key: 'strand', label: 'read strand'}]\n        if (this.alignmentTrack.hasPairs) {\n            colorByMenuItems.push({key: 'firstOfPairStrand', label: 'first-of-pair strand'})\n            colorByMenuItems.push({key: 'pairOrientation', label: 'pair orientation'})\n            colorByMenuItems.push({key: 'tlen', label: 'insert size (TLEN)'})\n            colorByMenuItems.push({key: 'unexpectedPair', label: 'pair orientation & insert size (TLEN)'})\n        }\n        const tagLabel = 'tag' + (this.alignmentTrack.colorByTag ? ' (' + this.alignmentTrack.colorByTag + ')' : '')\n        colorByMenuItems.push({key: 'tag', label: tagLabel})\n        for (let item of colorByMenuItems) {\n            const selected = (this.alignmentTrack.colorBy === item.key)\n            menuItems.push(this.colorByCB(item, selected))\n        }\n\n        // Show coverage / alignment options\n        const adjustTrackHeight = () => {\n            if (!this.autoHeight) {\n                const h =\n                    (this.showCoverage ? this.coverageTrackHeight : 0) +\n                    (this.showAlignments ? this.alignmentTrack.height : 0)\n                this.trackView.setTrackHeight(h)\n            }\n        }\n\n        menuItems.push('<hr/>')\n        menuItems.push({\n            object: $(createCheckbox(\"Show Coverage\", this.showCoverage)),\n            click: () => {\n                this.showCoverage = !this.showCoverage\n                adjustTrackHeight()\n                this.trackView.checkContentHeight()\n                this.trackView.repaintViews()\n            }\n        })\n        menuItems.push({\n            object: $(createCheckbox(\"Show Alignments\", this.showAlignments)),\n            click: () => {\n                this.showAlignments = !this.showAlignments\n                adjustTrackHeight()\n                this.trackView.checkContentHeight()\n                this.trackView.repaintViews()\n            }\n        })\n\n        // Show all bases\n        menuItems.push('<hr/>')\n        menuItems.push({\n            object: $(createCheckbox(\"Show all bases\", this.showAllBases)),\n            click: () => {\n                this.showAllBases = !this.showAllBases\n                this.config.showAllBases = this.showAllBases\n                this.trackView.repaintViews()\n            }\n        })\n\n        // Show mismatches\n        menuItems.push('<hr/>')\n        menuItems.push({\n            object: $(createCheckbox(\"Show mismatches\", this.showMismatches)),\n            click: () => {\n                this.showMismatches = !this.showMismatches\n                this.config.showMismatches = this.showMismatches\n                this.trackView.repaintViews()\n            }\n        })\n\n        // Insertions\n        menuItems.push({\n            object: $(createCheckbox(\"Show insertions\", this.showInsertions)),\n            click: () => {\n                this.showInsertions = !this.showInsertions\n                this.config.showInsertions = this.showInsertions\n                const alignmentContainers = this.getCachedAlignmentContainers()\n                this.trackView.repaintViews()\n            }\n        })\n\n        // Soft clips\n        menuItems.push({\n            object: $(createCheckbox(\"Show soft clips\", this.showSoftClips)),\n            click: () => {\n                this.showSoftClips = !this.showSoftClips\n                this.config.showSoftClips = this.showSoftClips\n                this.featureSource.setShowSoftClips(this.showSoftClips)\n                const alignmentContainers = this.getCachedAlignmentContainers()\n                for (let ac of alignmentContainers) {\n                    ac.setShowSoftClips(this.showSoftClips)\n                }\n                this.trackView.repaintViews()\n            }\n        })\n\n        // View as pairs\n        if (this.pairsSupported && this.alignmentTrack.hasPairs) {\n            menuItems.push('<hr/>')\n            menuItems.push({\n                object: $(createCheckbox(\"View as pairs\", this.viewAsPairs)),\n                click: () => {\n                    this.viewAsPairs = !this.viewAsPairs\n                    this.config.viewAsPairs = this.viewAsPairs\n                    this.featureSource.setViewAsPairs(this.viewAsPairs)\n                    const alignmentContainers = this.getCachedAlignmentContainers()\n                    for (let ac of alignmentContainers) {\n                        ac.setViewAsPairs(this.viewAsPairs)\n                    }\n                    this.trackView.repaintViews()\n                }\n            })\n        }\n\n        // Add chords to JBrowse circular view, if present\n        if (this.browser.circularView &&\n            (this.alignmentTrack.hasPairs || this.alignmentTrack.hasSupplemental)) {\n            menuItems.push('<hr/>')\n            if (this.alignmentTrack.hasPairs) {\n                menuItems.push({\n                    label: 'Add discordant pairs to circular view',\n                    click: () => {\n                        for (let viewport of this.trackView.viewports) {\n                            this.addPairedChordsForViewport(viewport)\n                        }\n                    }\n                })\n            }\n            if (this.alignmentTrack.hasSupplemental) {\n                menuItems.push({\n                    label: 'Add split reads to circular view',\n                    click: () => {\n                        for (let viewport of this.trackView.viewports) {\n                            this.addSplitChordsForViewport(viewport)\n                        }\n                    }\n                })\n            }\n        }\n\n\n        // Display mode\n        menuItems.push('<hr/>')\n        const $dml = $('<div class=\"igv-track-menu-category\">')\n        $dml.text('Display mode:')\n        menuItems.push({name: undefined, object: $dml, click: undefined, init: undefined})\n\n        menuItems.push({\n            object: $(createCheckbox(\"expand\", this.alignmentTrack.displayMode === \"EXPANDED\")),\n            click: () => {\n                this.alignmentTrack.displayMode = \"EXPANDED\"\n                this.config.displayMode = \"EXPANDED\"\n                this.trackView.checkContentHeight()\n                this.trackView.repaintViews()\n            }\n        })\n\n        menuItems.push({\n            object: $(createCheckbox(\"squish\", this.alignmentTrack.displayMode === \"SQUISHED\")),\n            click: () => {\n                this.alignmentTrack.displayMode = \"SQUISHED\"\n                this.config.displayMode = \"SQUISHED\"\n                this.trackView.checkContentHeight()\n                this.trackView.repaintViews()\n            }\n        })\n\n        return menuItems\n    }\n\n\n    /**\n     * Create a \"color by\" checkbox menu item, optionally initially checked\n     * @param menuItem\n     * @param showCheck\n     * @returns {{init: undefined, name: undefined, click: clickHandler, object: (jQuery|HTMLElement|jQuery.fn.init)}}\n     */\n    colorByCB(menuItem, showCheck) {\n        const $e = $(createCheckbox(menuItem.label, showCheck))\n        const clickHandler = (ev) => {\n\n            if (menuItem.key !== 'tag') {\n                if (menuItem.key === this.alignmentTrack.colorBy) {\n                    this.alignmentTrack.colorBy = 'none'\n                    this.config.colorBy = 'none'\n                    this.trackView.repaintViews()\n                } else {\n                    this.alignmentTrack.colorBy = menuItem.key\n                    this.config.colorBy = menuItem.key\n                    this.trackView.repaintViews()\n                }\n            } else {\n                this.browser.inputDialog.present({\n                    label: 'Tag Name',\n                    value: this.alignmentTrack.colorByTag ? this.alignmentTrack.colorByTag : '',\n                    callback: (tag) => {\n                        if (tag) {\n                            this.alignmentTrack.colorBy = 'tag'\n                            this.alignmentTrack.colorByTag = tag\n                            if (!this.alignmentTrack.tagColors) {\n                                this.alignmentTrack.tagColors = new PaletteColorTable(\"Set1\")\n                            }\n                        } else {\n                            this.alignmentTrack.colorBy = 'none'\n                            this.alignmentTrack.colorByTag = ''\n                        }\n                        this.trackView.repaintViews()\n                    }\n                }, ev)\n\n            }\n\n        }\n\n        return {name: undefined, object: $e, click: clickHandler, init: undefined}\n    }\n\n    /**\n     * Return the current state of the track.  Used to create sessions and bookmarks.\n     *\n     * @returns {*|{}}\n     */\n    getState() {\n\n        const config = super.getState()\n\n        if (this.sortObject) {\n            config.sort = {\n                chr: this.sortObject.chr,\n                position: this.sortObject.position + 1,\n                option: this.sortObject.option,\n                direction: this.sortObject.direction ? \"ASC\" : \"DESC\"\n            }\n        }\n\n        return config\n    }\n\n    getCachedAlignmentContainers() {\n        return this.trackView.viewports.map(vp => vp.cachedFeatures)\n    }\n\n    get dataRange() {\n        return this.coverageTrack.dataRange\n    }\n\n    set dataRange(dataRange) {\n        this.coverageTrack.dataRange = dataRange\n    }\n\n    get logScale() {\n        return this.coverageTrack.logScale\n    }\n\n    set logScale(logScale) {\n        this.coverageTrack.logScale = logScale\n    }\n\n    get autoscale() {\n        return this.coverageTrack.autoscale\n    }\n\n    set autoscale(autoscale) {\n        this.coverageTrack.autoscale = autoscale\n    }\n\n    /**\n     * Add chords to the circular view for the given viewport, represented by its reference frame\n     * @param refFrame\n     */\n    addPairedChordsForViewport(viewport) {\n\n        const maxTemplateLength = this.maxTemplateLength\n        const inView = []\n        const refFrame = viewport.referenceFrame\n        for (let a of viewport.cachedFeatures.allAlignments()) {\n            if (a.end >= refFrame.start\n                && a.start <= refFrame.end) {\n                if (a.paired) {\n                    if (a.end - a.start > maxTemplateLength) {\n                        inView.push(a)\n                    }\n                } else {\n                    if (a.mate\n                        && a.mate.chr\n                        && (a.mate.chr !== a.chr || Math.max(a.fragmentLength) > maxTemplateLength)) {\n                        inView.push(a)\n                    }\n                }\n            }\n        }\n        const chords = makePairedAlignmentChords(inView)\n        sendChords(chords, this, refFrame, 0.02)\n    }\n\n    addSplitChordsForViewport(viewport) {\n\n        const inView = []\n        const refFrame = viewport.referenceFrame\n        for (let a of viewport.cachedFeatures.allAlignments()) {\n\n            const sa = a.hasTag('SA')\n            if (a.end >= refFrame.start && a.start <= refFrame.end && sa) {\n                inView.push(a)\n            }\n        }\n\n        const chords = makeSupplementalAlignmentChords(inView)\n        sendChords(chords, this, refFrame, 0.02)\n    }\n}\n\n\nclass CoverageTrack {\n\n    constructor(config, parent) {\n        this.parent = parent\n        this.featureSource = parent.featureSource\n\n        this.paintAxis = paintAxis\n        this.top = 0\n\n        this.autoscale = config.autoscale || config.max === undefined\n        if (!this.autoscale) {\n            this.dataRange = {\n                min: config.min || 0,\n                max: config.max\n            }\n        }\n\n    }\n\n    get height() {\n        return this.parent.coverageTrackHeight\n    }\n\n    draw(options) {\n\n        const pixelTop = options.pixelTop\n        const pixelBottom = pixelTop + options.pixelHeight\n        const nucleotideColors = this.parent.browser.nucleotideColors\n\n        if (pixelTop > this.height) {\n            return //scrolled out of view\n        }\n\n        const ctx = options.context\n        const alignmentContainer = options.features\n        const coverageMap = alignmentContainer.coverageMap\n\n        let sequence\n        if (coverageMap.refSeq) {\n            sequence = coverageMap.refSeq.toUpperCase()\n        }\n\n        const bpPerPixel = options.bpPerPixel\n        const bpStart = options.bpStart\n        const pixelWidth = options.pixelWidth\n        const bpEnd = bpStart + pixelWidth * bpPerPixel + 1\n\n        // paint for all coverage buckets\n        // If alignment track color is != default, use it\n        let color\n        if (this.parent.coverageColor) {\n            color = this.parent.coverageColor\n        } else if (this.parent.color  && typeof this.parent.color !== \"function\") {\n            color = IGVColor.darkenLighten(this.parent.color, -35)\n        } else {\n            color = DEFAULT_COVERAGE_COLOR\n        }\n        IGVGraphics.setProperties(ctx, {\n            fillStyle: color,\n            strokeStyle: color\n        })\n\n        const w = Math.max(1, Math.ceil(1.0 / bpPerPixel))\n        for (let i = 0, len = coverageMap.coverage.length; i < len; i++) {\n\n            const bp = (coverageMap.bpStart + i)\n            if (bp < bpStart) continue\n            if (bp > bpEnd) break\n\n            const item = coverageMap.coverage[i]\n            if (!item) continue\n\n            const h = Math.round((item.total / this.dataRange.max) * this.height)\n            const y = this.height - h\n            const x = Math.floor((bp - bpStart) / bpPerPixel)\n\n\n            // IGVGraphics.setProperties(ctx, {fillStyle: \"rgba(0, 200, 0, 0.25)\", strokeStyle: \"rgba(0, 200, 0, 0.25)\" });\n            IGVGraphics.fillRect(ctx, x, y, w, h)\n        }\n\n        // coverage mismatch coloring -- don't try to do this in above loop, color bar will be overwritten when w<1\n        if (sequence) {\n            for (let i = 0, len = coverageMap.coverage.length; i < len; i++) {\n\n                const bp = (coverageMap.bpStart + i)\n                if (bp < bpStart) continue\n                if (bp > bpEnd) break\n\n                const item = coverageMap.coverage[i]\n                if (!item) continue\n\n                const h = (item.total / this.dataRange.max) * this.height\n                let y = this.height - h\n                const x = Math.floor((bp - bpStart) / bpPerPixel)\n\n                const refBase = sequence[i]\n                if (item.isMismatch(refBase)) {\n                    IGVGraphics.setProperties(ctx, {fillStyle: nucleotideColors[refBase]})\n                    IGVGraphics.fillRect(ctx, x, y, w, h)\n\n                    let accumulatedHeight = 0.0\n                    for (let nucleotide of [\"A\", \"C\", \"T\", \"G\"]) {\n\n                        const count = item[\"pos\" + nucleotide] + item[\"neg\" + nucleotide]\n\n                        // non-logoritmic\n                        const hh = (count / this.dataRange.max) * this.height\n                        y = (this.height - hh) - accumulatedHeight\n                        accumulatedHeight += hh\n                        IGVGraphics.setProperties(ctx, {fillStyle: nucleotideColors[nucleotide]})\n                        IGVGraphics.fillRect(ctx, x, y, w, hh)\n                    }\n                }\n            }\n        }\n    }\n\n    getClickedObject(clickState) {\n\n        let features = clickState.viewport.cachedFeatures\n        if (!features || features.length === 0) return\n\n        const genomicLocation = Math.floor(clickState.genomicLocation)\n        const coverageMap = features.coverageMap\n        const coverageMapIndex = Math.floor(genomicLocation - coverageMap.bpStart)\n        return coverageMap.coverage[coverageMapIndex]\n    }\n\n    popupData(clickState) {\n\n        const nameValues = []\n\n        const coverage = this.getClickedObject(clickState)\n        if (coverage) {\n            const genomicLocation = Math.floor(clickState.genomicLocation)\n            const referenceFrame = clickState.viewport.referenceFrame\n\n            nameValues.push(referenceFrame.chr + \":\" + StringUtils.numberFormatter(1 + genomicLocation))\n\n            nameValues.push({name: 'Total Count', value: coverage.total})\n\n            // A\n            let tmp = coverage.posA + coverage.negA\n            if (tmp > 0) tmp = tmp.toString() + \" (\" + Math.round((tmp / coverage.total) * 100.0) + \"%, \" + coverage.posA + \"+, \" + coverage.negA + \"- )\"\n            nameValues.push({name: 'A', value: tmp})\n\n            // C\n            tmp = coverage.posC + coverage.negC\n            if (tmp > 0) tmp = tmp.toString() + \" (\" + Math.round((tmp / coverage.total) * 100.0) + \"%, \" + coverage.posC + \"+, \" + coverage.negC + \"- )\"\n            nameValues.push({name: 'C', value: tmp})\n\n            // G\n            tmp = coverage.posG + coverage.negG\n            if (tmp > 0) tmp = tmp.toString() + \" (\" + Math.round((tmp / coverage.total) * 100.0) + \"%, \" + coverage.posG + \"+, \" + coverage.negG + \"- )\"\n            nameValues.push({name: 'G', value: tmp})\n\n            // T\n            tmp = coverage.posT + coverage.negT\n            if (tmp > 0) tmp = tmp.toString() + \" (\" + Math.round((tmp / coverage.total) * 100.0) + \"%, \" + coverage.posT + \"+, \" + coverage.negT + \"- )\"\n            nameValues.push({name: 'T', value: tmp})\n\n            // N\n            tmp = coverage.posN + coverage.negN\n            if (tmp > 0) tmp = tmp.toString() + \" (\" + Math.round((tmp / coverage.total) * 100.0) + \"%, \" + coverage.posN + \"+, \" + coverage.negN + \"- )\"\n            nameValues.push({name: 'N', value: tmp})\n\n            nameValues.push('<HR/>')\n            nameValues.push({name: 'DEL', value: coverage.del.toString()})\n            nameValues.push({name: 'INS', value: coverage.ins.toString()})\n        }\n\n        return nameValues\n\n    }\n\n}\n\nclass AlignmentTrack {\n\n    constructor(config, parent) {\n\n        this.parent = parent\n        this.browser = parent.browser\n        this.featureSource = parent.featureSource\n        this.top = 0 === config.coverageTrackHeight ? 0 : config.coverageTrackHeight + 5\n        this.displayMode = config.displayMode || \"EXPANDED\"\n        this.alignmentRowHeight = config.alignmentRowHeight || 14\n        this.squishedRowHeight = config.squishedRowHeight || 3\n\n        this.negStrandColor = config.negStrandColor || \"rgba(150, 150, 230, 0.75)\"\n        this.posStrandColor = config.posStrandColor || \"rgba(230, 150, 150, 0.75)\"\n        this.insertionColor = config.insertionColor || \"rgb(138, 94, 161)\"\n        this.insertionTextColor = config.insertionTextColor || \"white\"\n        this.showInsertionText = config.showInsertionText === undefined ? false : !!config.showInsertionText\n        this.deletionColor = config.deletionColor || \"black\"\n        this.deletionTextColor = config.deletionTextColor || \"black\"\n        this.showDeletionText = config.showDeletionText === undefined ? false : !!config.showDeletionText\n        this.skippedColor = config.skippedColor || \"rgb(150, 170, 170)\"\n        this.pairConnectorColor = config.pairConnectorColor\n\n        this.smallTLENColor = config.smallTLENColor || config.smallFragmentLengthColor || \"rgb(0, 0, 150)\"\n        this.largeTLENColor = config.largeTLENColor || config.largeFragmentLengthColor || \"rgb(200, 0, 0)\"\n\n        this.pairOrientation = config.pairOrienation || 'fr'\n        this.pairColors = {}\n        this.pairColors[\"RL\"] = config.rlColor || \"rgb(0, 150, 0)\"\n        this.pairColors[\"RR\"] = config.rrColor || \"rgb(20, 50, 200)\"\n        this.pairColors[\"LL\"] = config.llColor || \"rgb(0, 150, 150)\"\n\n        this.colorBy = config.colorBy || \"unexpectedPair\"\n        this.colorByTag = config.colorByTag ? config.colorByTag.toUpperCase() : undefined\n        this.bamColorTag = config.bamColorTag === undefined ? \"YC\" : config.bamColorTag\n\n        this.hideSmallIndels = config.hideSmallIndels\n        this.indelSizeThreshold = config.indelSizeThreshold || 1\n\n        this.hasPairs = false   // Until proven otherwise\n        this.hasSupplemental = false\n    }\n\n    setTop(coverageTrack, showCoverage) {\n        this.top = (0 === coverageTrack.height || false === showCoverage) ? 0 : (5 + coverageTrack.height)\n    }\n\n    /**\n     * Compute the pixel height required to display all content.\n     *\n     * @param alignmentContainer\n     * @returns {number|*}\n     */\n    computePixelHeight(alignmentContainer) {\n\n        if (alignmentContainer.packedAlignmentRows) {\n            const h = alignmentContainer.hasDownsampledIntervals() ? downsampleRowHeight + alignmentStartGap : 0\n            const alignmentRowHeight = this.displayMode === \"SQUISHED\" ?\n                this.squishedRowHeight :\n                this.alignmentRowHeight\n            return h + (alignmentRowHeight * alignmentContainer.packedAlignmentRows.length) + 5\n        } else {\n            return 0\n        }\n    }\n\n    draw(options) {\n\n        const alignmentContainer = options.features\n        const ctx = options.context\n        const bpPerPixel = options.bpPerPixel\n        const bpStart = options.bpStart\n        const pixelWidth = options.pixelWidth\n        const bpEnd = bpStart + pixelWidth * bpPerPixel + 1\n        const showSoftClips = this.parent.showSoftClips\n        const showAllBases = this.parent.showAllBases\n        const nucleotideColors = this.browser.nucleotideColors\n\n        //alignmentContainer.repack(bpPerPixel, showSoftClips);\n        const packedAlignmentRows = alignmentContainer.packedAlignmentRows\n\n\n        ctx.save()\n\n        let referenceSequence = alignmentContainer.sequence\n        if (referenceSequence) {\n            referenceSequence = referenceSequence.toUpperCase()\n        }\n        let alignmentRowYInset = 0\n\n        let pixelTop = options.pixelTop\n        if (this.top) {\n            ctx.translate(0, this.top)\n        }\n        const pixelBottom = pixelTop + options.pixelHeight\n\n        if (alignmentContainer.hasDownsampledIntervals()) {\n            alignmentRowYInset = downsampleRowHeight + alignmentStartGap\n\n            alignmentContainer.downsampledIntervals.forEach(function (interval) {\n                var xBlockStart = (interval.start - bpStart) / bpPerPixel,\n                    xBlockEnd = (interval.end - bpStart) / bpPerPixel\n\n                if (xBlockEnd - xBlockStart > 5) {\n                    xBlockStart += 1\n                    xBlockEnd -= 1\n                }\n                IGVGraphics.fillRect(ctx, xBlockStart, 2, (xBlockEnd - xBlockStart), downsampleRowHeight - 2, {fillStyle: \"black\"})\n            })\n\n        } else {\n            alignmentRowYInset = 0\n        }\n\n        // Transient variable -- rewritten on every draw, used for click object selection\n        this.alignmentsYOffset = alignmentRowYInset\n        const alignmentRowHeight = this.displayMode === \"SQUISHED\" ?\n            this.squishedRowHeight :\n            this.alignmentRowHeight\n\n        if (packedAlignmentRows) {\n\n            const nRows = packedAlignmentRows.length\n\n            for (let rowIndex = 0; rowIndex < nRows; rowIndex++) {\n\n                const alignmentRow = packedAlignmentRows[rowIndex]\n                const alignmentY = alignmentRowYInset + (alignmentRowHeight * rowIndex)\n                const alignmentHeight = alignmentRowHeight <= 4 ? alignmentRowHeight : alignmentRowHeight - 2\n\n                if (alignmentY > pixelBottom) {\n                    break\n                } else if (alignmentY + alignmentHeight < pixelTop) {\n                    continue\n                }\n\n                for (let alignment of alignmentRow.alignments) {\n\n                    this.hasPairs = this.hasPairs || alignment.isPaired()\n                    if (this.browser.circularView) {\n                        // This is an expensive check, only do it if needed\n                        this.hasSupplemental = this.hasSupplemental || alignment.hasTag('SA')\n                    }\n\n                    if ((alignment.start + alignment.lengthOnRef) < bpStart) continue\n                    if (alignment.start > bpEnd) break\n                    if (true === alignment.hidden) {\n                        continue\n                    }\n\n                    if (alignment instanceof PairedAlignment) {\n\n                        drawPairConnector.call(this, alignment, alignmentY, alignmentHeight)\n\n                        drawSingleAlignment.call(this, alignment.firstAlignment, alignmentY, alignmentHeight)\n\n                        if (alignment.secondAlignment) {\n                            drawSingleAlignment.call(this, alignment.secondAlignment, alignmentY, alignmentHeight)\n                        }\n\n                    } else {\n                        drawSingleAlignment.call(this, alignment, alignmentY, alignmentHeight)\n                    }\n\n                }\n            }\n        }\n        ctx.restore()\n\n        // alignment is a PairedAlignment\n        function drawPairConnector(alignment, yRect, alignmentHeight) {\n\n            var connectorColor = this.getConnectorColor(alignment.firstAlignment),\n                xBlockStart = (alignment.connectingStart - bpStart) / bpPerPixel,\n                xBlockEnd = (alignment.connectingEnd - bpStart) / bpPerPixel,\n                yStrokedLine = yRect + alignmentHeight / 2\n\n            if ((alignment.connectingEnd) < bpStart || alignment.connectingStart > bpEnd) {\n                return\n            }\n            if (alignment.mq <= 0) {\n                connectorColor = IGVColor.addAlpha(connectorColor, 0.15)\n            }\n            IGVGraphics.setProperties(ctx, {fillStyle: connectorColor, strokeStyle: connectorColor})\n            IGVGraphics.strokeLine(ctx, xBlockStart, yStrokedLine, xBlockEnd, yStrokedLine)\n\n        }\n\n        function drawSingleAlignment(alignment, yRect, alignmentHeight) {\n\n\n            if ((alignment.start + alignment.lengthOnRef) < bpStart || alignment.start > bpEnd) {\n                return\n            }\n\n            const blocks = showSoftClips ? alignment.blocks : alignment.blocks.filter(b => 'S' !== b.type)\n\n            let alignmentColor = this.getAlignmentColor(alignment)\n            const outlineColor = alignmentColor\n            if (alignment.mq <= 0) {\n                alignmentColor = IGVColor.addAlpha(alignmentColor, 0.15)\n            }\n            IGVGraphics.setProperties(ctx, {fillStyle: alignmentColor, strokeStyle: outlineColor})\n\n            // Save bases to draw into an array for later drawing, so they can be overlaid on insertion blocks,\n            // which is relevant if we have insertions with size label\n            const basesToDraw = []\n\n            for (let b = 0; b < blocks.length; b++) {   // Can't use forEach here -- we need ability to break\n\n                const block = blocks[b]\n\n                // Somewhat complex test, neccessary to insure gaps are drawn.\n                // If this is not the last block, and the next block starts before the orign (off screen to left) then skip.\n                if ((b !== blocks.length - 1) && blocks[b + 1].start < bpStart) continue\n\n                // drawBlock returns bases to draw, which are drawn on top of insertion blocks (if they're wider than\n                // the space between two bases) like in Java IGV\n                basesToDraw.push(...drawBlock.call(this, block, b))\n\n                if ((block.start + block.len) > bpEnd) {\n                    // Do this after drawBlock to insure gaps are drawn\n                    break\n                }\n            }\n\n            if (alignment.gaps) {\n                const yStrokedLine = yRect + alignmentHeight / 2\n                for (let gap of alignment.gaps) {\n                    const sPixel = (gap.start - bpStart) / bpPerPixel\n                    const ePixel = ((gap.start + gap.len) - bpStart) / bpPerPixel\n                    const lineWidth = ePixel - sPixel\n                    const gapLenText = gap.len.toString()\n                    const gapTextWidth = gapLenText.length * 6\n                    const gapCenter = sPixel + (lineWidth / 2)\n\n                    const color = (\"D\" === gap.type) ? this.deletionColor : this.skippedColor\n\n                    IGVGraphics.strokeLine(ctx, sPixel, yStrokedLine, ePixel, yStrokedLine, {\n                        strokeStyle: color,\n                        lineWidth: 2,\n                    })\n\n                    // Add gap width as text like Java IGV if it fits nicely and is a multi-base gap\n                    if (this.showDeletionText && gap.len > 1 && lineWidth >= gapTextWidth + 8) {\n                        const textStart = gapCenter - (gapTextWidth / 2)\n                        IGVGraphics.fillRect(ctx, textStart - 1, yRect - 1, gapTextWidth + 2, 12, {fillStyle: \"white\"})\n                        IGVGraphics.fillText(ctx, gapLenText, textStart, yRect + 10, {\n                            'font': 'normal 10px monospace',\n                            'fillStyle': this.deletionTextColor,\n                        })\n                    }\n                }\n            }\n\n            if (alignment.insertions && this.parent.showInsertions) {\n                let lastXBlockStart = -1\n                for (let insertionBlock of alignment.insertions) {\n                    if (this.hideSmallIndels && insertionBlock.len <= this.indelSizeThreshold) {\n                        continue\n                    }\n                    if (insertionBlock.start < bpStart) {\n                        continue\n                    }\n                    if (insertionBlock.start > bpEnd) {\n                        break\n                    }\n\n                    const refOffset = insertionBlock.start - bpStart\n                    const insertLenText = insertionBlock.len.toString()\n\n                    const textPixelWidth = 2 + (insertLenText.length * 6)\n                    const basePixelWidth = (!this.showInsertionText || insertionBlock.len === 1)\n                        ? 2\n                        : Math.round(insertionBlock.len / bpPerPixel)\n                    const widthBlock = Math.max(Math.min(textPixelWidth, basePixelWidth), 2)\n\n                    const xBlockStart = (refOffset / bpPerPixel) - (widthBlock / 2)\n                    if ((xBlockStart - lastXBlockStart) > 2) {\n                        const props = {fillStyle: this.insertionColor}\n\n                        // Draw decorations like Java IGV to make an 'I' shape\n                        IGVGraphics.fillRect(ctx, xBlockStart - 2, yRect, widthBlock + 4, 2, props)\n                        IGVGraphics.fillRect(ctx, xBlockStart, yRect + 2, widthBlock, alignmentHeight - 4, props)\n                        IGVGraphics.fillRect(ctx, xBlockStart - 2, yRect + alignmentHeight - 2, widthBlock + 4, 2, props)\n\n                        // Show # of inserted bases as text if it's a multi-base insertion and the insertion block\n                        // is wide enough to hold text (its size is capped at the text label size, but can be smaller\n                        // if the browser is zoomed out and the insertion is small)\n                        if (this.showInsertionText && insertionBlock.len > 1 && basePixelWidth > textPixelWidth) {\n                            IGVGraphics.fillText(ctx, insertLenText, xBlockStart + 1, yRect + 10, {\n                                'font': 'normal 10px monospace',\n                                'fillStyle': this.insertionTextColor,\n                            })\n                        }\n                        lastXBlockStart = xBlockStart\n                    }\n                }\n            }\n\n            basesToDraw.forEach(({bbox, baseColor, readChar}) => {\n                renderBlockOrReadChar(ctx, bpPerPixel, bbox, baseColor, readChar)\n            })\n\n\n            function drawBlock(block, b) {\n                // Collect bases to draw for later rendering\n                const blockBasesToDraw = []\n\n                const offsetBP = block.start - alignmentContainer.start\n                const blockStartPixel = (block.start - bpStart) / bpPerPixel\n                const blockEndPixel = ((block.start + block.len) - bpStart) / bpPerPixel\n                const blockWidthPixel = Math.max(1, blockEndPixel - blockStartPixel)\n\n                //const arrowHeadWidthPixel = alignmentRowHeight / 2.0;\n                const nomPixelWidthOnRef = 100 / bpPerPixel\n                const arrowHeadWidthPixel = Math.min(alignmentRowHeight / 2.0, nomPixelWidthOnRef / 6)\n\n                const isSoftClip = 'S' === block.type\n\n                const strokeOutline =\n                    alignment.mq <= 0 ||\n                    this.highlightedAlignmentReadNamed === alignment.readName ||\n                    isSoftClip\n\n                let blockOutlineColor = outlineColor\n                if (this.highlightedAlignmentReadNamed === alignment.readName) blockOutlineColor = 'red'\n                else if (isSoftClip) blockOutlineColor = 'rgb(50,50,50)'\n\n                const lastBlockPositiveStrand = (true === alignment.strand && b === blocks.length - 1)\n                const lastBlockReverseStrand = (false === alignment.strand && b === 0)\n                const lastBlock = lastBlockPositiveStrand | lastBlockReverseStrand\n\n                if (lastBlock) {\n                    let xListPixel\n                    let yListPixel\n                    if (lastBlockPositiveStrand) {\n                        xListPixel = [\n                            blockStartPixel,\n                            blockEndPixel,\n                            blockEndPixel + arrowHeadWidthPixel,\n                            blockEndPixel,\n                            blockStartPixel,\n                            blockStartPixel]\n                        yListPixel = [\n                            yRect,\n                            yRect,\n                            yRect + (alignmentHeight / 2.0),\n                            yRect + alignmentHeight,\n                            yRect + alignmentHeight,\n                            yRect]\n\n                    }\n\n                    // Last block on - strand ?\n                    else if (lastBlockReverseStrand) {\n                        xListPixel = [\n                            blockEndPixel,\n                            blockStartPixel,\n                            blockStartPixel - arrowHeadWidthPixel,\n                            blockStartPixel,\n                            blockEndPixel,\n                            blockEndPixel]\n                        yListPixel = [\n                            yRect,\n                            yRect,\n                            yRect + (alignmentHeight / 2.0),\n                            yRect + alignmentHeight,\n                            yRect + alignmentHeight,\n                            yRect]\n\n                    }\n                    IGVGraphics.fillPolygon(ctx, xListPixel, yListPixel, {fillStyle: alignmentColor})\n\n                    if (strokeOutline) {\n                        IGVGraphics.strokePolygon(ctx, xListPixel, yListPixel, {strokeStyle: blockOutlineColor})\n                    }\n                }\n\n                // Internal block\n                else {\n                    IGVGraphics.fillRect(ctx, blockStartPixel, yRect, blockWidthPixel, alignmentHeight, {fillStyle: alignmentColor})\n\n                    if (strokeOutline) {\n                        ctx.save()\n                        ctx.strokeStyle = blockOutlineColor\n                        ctx.strokeRect(blockStartPixel, yRect, blockWidthPixel, alignmentHeight)\n                        ctx.restore()\n                    }\n                }\n\n\n                // Read base coloring\n\n                if (isSoftClip ||\n                    showAllBases ||\n                    this.parent.showMismatches && (referenceSequence && alignment.seq && alignment.seq !== \"*\")) {\n\n                    const seq = alignment.seq ? alignment.seq.toUpperCase() : undefined\n                    const qual = alignment.qual\n                    const seqOffset = block.seqOffset\n                    const widthPixel = Math.max(1, 1 / bpPerPixel)\n\n\n                    for (let i = 0, len = block.len; i < len; i++) {\n\n                        const xPixel = ((block.start + i) - bpStart) / bpPerPixel\n\n                        if (xPixel + widthPixel < 0) continue   // Off left edge\n                        if (xPixel > pixelWidth) break  // Off right edge\n\n                        let readChar = seq ? seq.charAt(seqOffset + i) : ''\n                        const refChar = offsetBP + i >= 0 ? referenceSequence.charAt(offsetBP + i) : ''\n\n                        if (readChar === \"=\") {\n                            readChar = refChar\n                        }\n                        if (readChar === \"X\" || refChar !== readChar || isSoftClip || showAllBases) {\n\n                            let baseColor\n                            if (!isSoftClip && qual !== undefined && qual.length > seqOffset + i) {\n                                const readQual = qual[seqOffset + i]\n                                baseColor = shadedBaseColor(readQual, nucleotideColors[readChar])\n                            } else {\n                                baseColor = nucleotideColors[readChar]\n                            }\n                            if (baseColor) {\n                                blockBasesToDraw.push({\n                                    bbox: {\n                                        x: xPixel,\n                                        y: yRect,\n                                        width: widthPixel,\n                                        height: alignmentHeight\n                                    },\n                                    baseColor,\n                                    readChar,\n                                })\n                            }\n                        }\n                    }\n                }\n\n                return blockBasesToDraw\n            }\n\n            function renderBlockOrReadChar(context, bpp, bbox, color, char) {\n                var threshold,\n                    center\n\n                threshold = 1.0 / 10.0\n                if (bpp <= threshold && bbox.height >= 8) {\n\n                    // render letter\n                    const fontHeight = Math.min(10, bbox.height)\n                    context.font = '' + fontHeight + 'px sans-serif'\n                    center = bbox.x + (bbox.width / 2.0)\n                    IGVGraphics.strokeText(context, char, center - (context.measureText(char).width / 2), fontHeight - 1 + bbox.y, {strokeStyle: color})\n                } else {\n\n                    // render colored block\n                    IGVGraphics.fillRect(context, bbox.x, bbox.y, bbox.width, bbox.height, {fillStyle: color})\n                }\n            }\n        }\n\n    };\n\n    popupData(clickState) {\n        const clickedObject = this.getClickedObject(clickState)\n        return clickedObject ? clickedObject.popupData(clickState.genomicLocation) : undefined\n    };\n\n    contextMenuItemList(clickState) {\n\n        const viewport = clickState.viewport\n        const list = []\n\n        const sortByOption = (option) => {\n            const cs = this.parent.sortObject\n            const direction = (cs && cs.position === Math.floor(clickState.genomicLocation)) ? !cs.direction : true\n            const newSortObject = {\n                chr: viewport.referenceFrame.chr,\n                position: Math.floor(clickState.genomicLocation),\n                option: option,\n                direction: direction\n            }\n            this.parent.sortObject = newSortObject\n            viewport.cachedFeatures.sortRows(newSortObject)\n            viewport.repaint()\n        }\n        list.push('<b>Sort by...</b>')\n        list.push({label: '&nbsp; base', click: () => sortByOption(\"BASE\")})\n        list.push({label: '&nbsp; read strand', click: () => sortByOption(\"STRAND\")})\n        list.push({label: '&nbsp; insert size', click: () => sortByOption(\"INSERT_SIZE\")})\n        list.push({label: '&nbsp; gap size', click: () => sortByOption(\"GAP_SIZE\")})\n        list.push({label: '&nbsp; chromosome of mate', click: () => sortByOption(\"MATE_CHR\")})\n        list.push({label: '&nbsp; mapping quality', click: () => sortByOption(\"MQ\")})\n        list.push({label: '&nbsp; read name', click: () => sortByOption(\"READ_NAME\")})\n        list.push({label: '&nbsp; aligned read length', click: () => sortByOption(\"ALIGNED_READ_LENGTH\")})\n        list.push({\n            label: '&nbsp; tag', click: () => {\n                const cs = this.parent.sortObject\n                const direction = (cs && cs.position === Math.floor(clickState.genomicLocation)) ? !cs.direction : true\n                const config =\n                    {\n                        label: 'Tag Name',\n                        value: this.sortByTag ? this.sortByTag : '',\n                        callback: (tag) => {\n                            if (tag) {\n                                const newSortObject = {\n                                    chr: viewport.referenceFrame.chr,\n                                    position: Math.floor(clickState.genomicLocation),\n                                    option: \"TAG\",\n                                    tag: tag,\n                                    direction: direction\n                                }\n                                this.sortByTag = tag\n                                this.parent.sortObject = newSortObject\n                                viewport.cachedFeatures.sortRows(newSortObject)\n                                viewport.repaint()\n                            }\n                        }\n                    }\n                this.browser.inputDialog.present(config, clickState.event)\n            }\n        })\n        list.push('<hr/>')\n\n        const clickedObject = this.getClickedObject(clickState)\n\n        if (clickedObject) {\n\n            const showSoftClips = this.parent.showSoftClips\n            const clickedAlignment = (typeof clickedObject.alignmentContaining === 'function') ?\n                clickedObject.alignmentContaining(clickState.genomicLocation, showSoftClips) :\n                clickedObject\n            if (clickedAlignment) {\n                if (clickedAlignment.isPaired() && clickedAlignment.isMateMapped()) {\n                    list.push({\n                        label: 'View mate in split screen',\n                        click: () => {\n                            if (clickedAlignment.mate) {\n                                const referenceFrame = clickState.viewport.referenceFrame\n                                if (this.browser.genome.getChromosome(clickedAlignment.mate.chr)) {\n                                    this.highlightedAlignmentReadNamed = clickedAlignment.readName\n                                    //this.browser.presentMultiLocusPanel(clickedAlignment, referenceFrame)\n                                    const bpWidth = referenceFrame.end - referenceFrame.start\n                                    const frameStart = clickedAlignment.mate.position - bpWidth / 2\n                                    const frameEnd = clickedAlignment.mate.position + bpWidth / 2\n                                    this.browser.addMultiLocusPanel(clickedAlignment.mate.chr, frameStart, frameEnd, referenceFrame)\n                                } else {\n                                    this.browser.alert.present(`Reference does not contain chromosome: ${clickedAlignment.mate.chr}`)\n                                }\n                            }\n                        },\n                        init: undefined\n                    })\n                }\n\n                list.push({\n                    label: 'View read sequence',\n                    click: () => {\n                        const seqstring = clickedAlignment.seq //.map(b => String.fromCharCode(b)).join(\"\");\n                        if (!seqstring || \"*\" === seqstring) {\n                            this.browser.alert.present(\"Read sequence: *\")\n                        } else {\n                            this.browser.alert.present(seqstring)\n                        }\n                    }\n                })\n\n                if (isSecureContext()) {\n                    list.push({\n                        label: 'Copy read sequence',\n                        click: async () => {\n                            const seq = clickedAlignment.seq //.map(b => String.fromCharCode(b)).join(\"\");\n                            try {\n                                //console.log(`seq: ${seq}`)\n                                await navigator.clipboard.writeText(seq)\n                            } catch (e) {\n                                console.error(e)\n                                this.browser.alert.present(`error copying sequence to clipboard ${e}`)\n                            }\n\n                        }\n                    })\n                }\n\n                // TODO if genome supports blat\n                const seqstring = clickedAlignment.seq\n                if (seqstring && \"*\" != seqstring) {\n\n                    if (seqstring.length < maxSequenceSize) {\n                        list.push({\n                            label: 'BLAT read sequence',\n                            click: () => {\n                                const sequence = clickedAlignment.isNegativeStrand() ? reverseComplementSequence(seqstring) : seqstring\n                                const name = `${clickedAlignment.readName} - blat`\n                                const title = `${this.parent.name} - ${name}`\n                                createBlatTrack({sequence, browser: this.browser, name, title})\n                            }\n                        })\n                    }\n\n                    const softClips = clickedAlignment.softClippedBlocks()\n                    if (softClips.left && softClips.left.len > MINIMUM_BLAT_LENGTH && softClips.left.len < maxSequenceSize) {\n                        list.push({\n                            label: 'BLAT left soft-clipped sequence',\n                            click: () => {\n                                const clippedSequence = seqstring.substr(softClips.left.seqOffset, softClips.left.len)\n                                const sequence = clickedAlignment.isNegativeStrand() ? reverseComplementSequence(clippedSequence) : clippedSequence\n                                const name = `${clickedAlignment.readName} - blat left clip`\n                                const title = `${this.parent.name} - ${name}`\n                                createBlatTrack({sequence, browser: this.browser, name, title})\n                            }\n                        })\n                    }\n                    if (softClips.right && softClips.right.len > MINIMUM_BLAT_LENGTH && softClips.right.len < maxSequenceSize) {\n                        list.push({\n                            label: 'BLAT right soft-clipped sequence',\n                            click: () => {\n                                const clippedSequence = seqstring.substr(softClips.right.seqOffset, softClips.right.len)\n                                const sequence = clickedAlignment.isNegativeStrand() ? reverseComplementSequence(clippedSequence) : clippedSequence\n                                const name = `${clickedAlignment.readName} - blat right clip`\n                                const title = `${this.parent.name} - ${name}`\n                                createBlatTrack({sequence, browser: this.browser, name, title})\n                            }\n                        })\n                    }\n                }\n\n                list.push('<hr/>')\n            }\n        }\n\n        // Experimental JBrowse feature\n        if (this.browser.circularView && (this.hasPairs || this.hasSupplemental)) {\n            if (this.hasPairs) {\n                list.push({\n                    label: 'Add discordant pairs to circular view',\n                    click: () => {\n                        this.parent.addPairedChordsForViewport(viewport)\n                    }\n                })\n            }\n            if (this.hasSupplemental) {\n                list.push({\n                    label: 'Add split reads to circular view',\n                    click: () => {\n                        this.parent.addSplitChordsForViewport(viewport)\n                    }\n                })\n            }\n            list.push('<hr/>')\n        }\n\n        return list\n\n    }\n\n    getClickedObject(clickState) {\n\n        const viewport = clickState.viewport\n        const y = clickState.y\n        const genomicLocation = clickState.genomicLocation\n\n        const showSoftClips = this.parent.showSoftClips\n\n        let features = viewport.cachedFeatures\n        if (!features || features.length === 0) return\n\n        let packedAlignmentRows = features.packedAlignmentRows\n        let downsampledIntervals = features.downsampledIntervals\n        const alignmentRowHeight = this.displayMode === \"SQUISHED\" ?\n            this.squishedRowHeight :\n            this.alignmentRowHeight\n\n        let packedAlignmentsIndex = Math.floor((y - this.top - this.alignmentsYOffset) / alignmentRowHeight)\n\n        if (packedAlignmentsIndex < 0) {\n            for (let i = 0; i < downsampledIntervals.length; i++) {\n                if (downsampledIntervals[i].start <= genomicLocation && (downsampledIntervals[i].end >= genomicLocation)) {\n                    return downsampledIntervals[i]\n                }\n            }\n        } else if (packedAlignmentsIndex < packedAlignmentRows.length) {\n            const alignmentRow = packedAlignmentRows[packedAlignmentsIndex]\n            const clicked = alignmentRow.alignments.filter(alignment => alignment.containsLocation(genomicLocation, showSoftClips))\n            if (clicked.length > 0) return clicked[0]\n        }\n\n        return undefined\n\n    };\n\n    /**\n     * Return the color for connectors in paired alignment view.   If explicitly set return that, otherwise return\n     * the alignment color, unless the color option can result in split colors (separte color for each mate).\n     *\n     * @param alignment\n     * @returns {string}\n     */\n    getConnectorColor(alignment) {\n\n        if (this.pairConnectorColor) {\n            return this.pairConnectorColor\n        }\n\n        switch (this.colorBy) {\n            case \"strand\":\n            case \"firstOfPairStrand\":\n            case \"pairOrientation\":\n            case \"tag\":\n                if (this.parent.color) {\n                    return (typeof this.parent.color === \"function\") ? this.parent.color(alignment) : this.parent.color\n                } else {\n                    return DEFAULT_CONNECTOR_COLOR\n                }\n            default:\n                return this.getAlignmentColor(alignment)\n\n        }\n    }\n\n    getAlignmentColor(alignment) {\n\n        let color = DEFAULT_ALIGNMENT_COLOR   // The default color if nothing else applies\n        if (this.parent.color) {\n            color = (typeof this.parent.color === \"function\") ? this.parent.color(alignment) : this.parent.color\n        } else {\n            color = DEFAULT_ALIGNMENT_COLOR\n        }\n        const option = this.colorBy\n        switch (option) {\n            case \"strand\":\n                color = alignment.strand ? this.posStrandColor : this.negStrandColor\n                break\n\n            case \"firstOfPairStrand\":\n\n                if (alignment instanceof PairedAlignment) {\n                    color = alignment.firstOfPairStrand() ? this.posStrandColor : this.negStrandColor\n                } else if (alignment.isPaired()) {\n\n                    if (alignment.isFirstOfPair()) {\n                        color = alignment.strand ? this.posStrandColor : this.negStrandColor\n                    } else if (alignment.isSecondOfPair()) {\n                        color = alignment.strand ? this.negStrandColor : this.posStrandColor\n                    } else {\n                        console.error(\"ERROR. Paired alignments are either first or second.\")\n                    }\n                }\n                break\n\n            case \"unexpectedPair\":\n            case \"pairOrientation\":\n\n                if (this.pairOrientation && alignment.pairOrientation) {\n                    const oTypes = orientationTypes[this.pairOrientation]\n                    if (oTypes) {\n                        const pairColor = this.pairColors[oTypes[alignment.pairOrientation]]\n                        if (pairColor) {\n                            color = pairColor\n                            break\n                        }\n                    }\n                }\n                if (\"pairOrientation\" === option) {\n                    break\n                }\n\n            case \"tlen\":\n            case \"fragmentLength\":\n\n                if (alignment.mate && alignment.isMateMapped()) {\n                    if (alignment.mate.chr !== alignment.chr) {\n                        color = getChrColor(alignment.mate.chr)\n                    } else if (this.parent.minTemplateLength && Math.abs(alignment.fragmentLength) < this.parent.minTemplateLength) {\n                        color = this.smallTLENColor\n                    } else if (this.parent.maxTemplateLength && Math.abs(alignment.fragmentLength) > this.parent.maxTemplateLength) {\n                        color = this.largeTLENColor\n                    }\n                }\n                break\n\n            case \"tag\":\n                const tagValue = alignment.tags()[this.colorByTag]\n                if (tagValue !== undefined) {\n                    if (this.bamColorTag === this.colorByTag) {\n                        // UCSC style color option\n                        color = \"rgb(\" + tagValue + \")\"\n                    } else {\n\n                        if (!this.tagColors) {\n                            this.tagColors = new PaletteColorTable(\"Set1\")\n                        }\n                        color = this.tagColors.getColor(tagValue)\n                    }\n                }\n                break\n        }\n\n        return color\n\n    }\n}\n\nfunction shadedBaseColor(qual, baseColor) {\n\n    const minQ = 5   //prefs.getAsInt(PreferenceManager.SAM_BASE_QUALITY_MIN),\n    const maxQ = 20  //prefs.getAsInt(PreferenceManager.SAM_BASE_QUALITY_MAX);\n\n    let alpha\n    if (qual < minQ) {\n        alpha = 0.1\n    } else {\n        alpha = Math.max(0.1, Math.min(1.0, 0.1 + 0.9 * (qual - minQ) / (maxQ - minQ)))\n    }\n    // Round alpha to nearest 0.1\n    alpha = Math.round(alpha * 10) / 10.0\n\n    if (alpha < 1) {\n        baseColor = IGVColor.addAlpha(baseColor, alpha)\n    }\n    return baseColor\n}\n\nconst orientationTypes = {\n\n    \"fr\": {\n        \"F1R2\": \"LR\",\n        \"F2R1\": \"LR\",\n        \"F1F2\": \"LL\",\n        \"F2F1\": \"LL\",\n        \"R1R2\": \"RR\",\n        \"R2R1\": \"RR\",\n        \"R1F2\": \"RL\",\n        \"R2F1\": \"RL\"\n    },\n\n    \"rf\": {\n        \"R1F2\": \"LR\",\n        \"R2F1\": \"LR\",\n        \"R1R2\": \"LL\",\n        \"R2R1\": \"LL\",\n        \"F1F2\": \"RR\",\n        \"F2F1\": \"RR\",\n        \"F1R2\": \"RL\",\n        \"F2R1\": \"RL\"\n    },\n\n    \"ff\": {\n        \"F2F1\": \"LR\",\n        \"R1R2\": \"LR\",\n        \"F2R1\": \"LL\",\n        \"R1F2\": \"LL\",\n        \"R2F1\": \"RR\",\n        \"F1R2\": \"RR\",\n        \"R2R1\": \"RL\",\n        \"F1F2\": \"RL\"\n    }\n}\n\nexport function getChrColor(chr) {\n    if (chrColorMap[chr]) {\n        return chrColorMap[chr]\n    } else if (chrColorMap[\"chr\" + chr]) {\n        const color = chrColorMap[\"chr\" + chr]\n        chrColorMap[chr] = color\n        return color\n    } else {\n        const color = IGVColor.randomRGB(0, 255)\n        chrColorMap[chr] = color\n        return color\n    }\n}\n\nconst chrColorMap = {\n    \"chrX\": \"rgb(204, 153, 0)\",\n    \"chrY\": \"rgb(153, 204, 0)\",\n    \"chrUn\": \"rgb(50, 50, 50)\",\n    \"chr1\": \"rgb(80, 80, 255)\",\n    \"chrI\": \"rgb(139, 155, 187)\",\n    \"chr2\": \"rgb(206, 61, 50)\",\n    \"chrII\": \"rgb(206, 61, 50)\",\n    \"chr2a\": \"rgb(216, 71, 60)\",\n    \"chr2b\": \"rgb(226, 81, 70)\",\n    \"chr3\": \"rgb(116, 155, 88)\",\n    \"chrIII\": \"rgb(116, 155, 88)\",\n    \"chr4\": \"rgb(240, 230, 133)\",\n    \"chrIV\": \"rgb(240, 230, 133)\",\n    \"chr5\": \"rgb(70, 105, 131)\",\n    \"chr6\": \"rgb(186, 99, 56)\",\n    \"chr7\": \"rgb(93, 177, 221)\",\n    \"chr8\": \"rgb(128, 34, 104)\",\n    \"chr9\": \"rgb(107, 215, 107)\",\n    \"chr10\": \"rgb(213, 149, 167)\",\n    \"chr11\": \"rgb(146, 72, 34)\",\n    \"chr12\": \"rgb(131, 123, 141)\",\n    \"chr13\": \"rgb(199, 81, 39)\",\n    \"chr14\": \"rgb(213, 143, 92)\",\n    \"chr15\": \"rgb(122, 101, 165)\",\n    \"chr16\": \"rgb(228, 175, 105)\",\n    \"chr17\": \"rgb(59, 27, 83)\",\n    \"chr18\": \"rgb(205, 222, 183)\",\n    \"chr19\": \"rgb(97, 42, 121)\",\n    \"chr20\": \"rgb(174, 31, 99)\",\n    \"chr21\": \"rgb(231, 199, 111)\",\n    \"chr22\": \"rgb(90, 101, 94)\",\n    \"chr23\": \"rgb(204, 153, 0)\",\n    \"chr24\": \"rgb(153, 204, 0)\",\n    \"chr25\": \"rgb(51, 204, 0)\",\n    \"chr26\": \"rgb(0, 204, 51)\",\n    \"chr27\": \"rgb(0, 204, 153)\",\n    \"chr28\": \"rgb(0, 153, 204)\",\n    \"chr29\": \"rgb(10, 71, 255)\",\n    \"chr30\": \"rgb(71, 117, 255)\",\n    \"chr31\": \"rgb(255, 194, 10)\",\n    \"chr32\": \"rgb(255, 209, 71)\",\n    \"chr33\": \"rgb(153, 0, 51)\",\n    \"chr34\": \"rgb(153, 26, 0)\",\n    \"chr35\": \"rgb(153, 102, 0)\",\n    \"chr36\": \"rgb(128, 153, 0)\",\n    \"chr37\": \"rgb(51, 153, 0)\",\n    \"chr38\": \"rgb(0, 153, 26)\",\n    \"chr39\": \"rgb(0, 153, 102)\",\n    \"chr40\": \"rgb(0, 128, 153)\",\n    \"chr41\": \"rgb(0, 51, 153)\",\n    \"chr42\": \"rgb(26, 0, 153)\",\n    \"chr43\": \"rgb(102, 0, 153)\",\n    \"chr44\": \"rgb(153, 0, 128)\",\n    \"chr45\": \"rgb(214, 0, 71)\",\n    \"chr46\": \"rgb(255, 20, 99)\",\n    \"chr47\": \"rgb(0, 214, 143)\",\n    \"chr48\": \"rgb(20, 255, 177)\",\n}\n\nexport default BAMTrack\n","import TrackViewport from \"./trackViewport.js\"\nimport $ from \"./vendor/jquery-3.3.1.slim.js\"\nimport RulerSweeper from \"./rulerSweeper.js\"\nimport GenomeUtils from \"./genome/genome.js\"\nimport {IGVMath, StringUtils} from \"../node_modules/igv-utils/src/index.js\"\nimport {DOMUtils, Icon} from \"../node_modules/igv-ui/dist/igv-ui.js\"\nimport {getChrColor} from \"./bam/bamTrack.js\"\n\nlet timer\nlet currentViewport = undefined\nconst toolTipTimeout = 1e4\n\nclass RulerViewport extends TrackViewport {\n\n    constructor(trackView, $viewportColumn, referenceFrame, width) {\n        super(trackView, $viewportColumn, referenceFrame, width)\n    }\n\n    get contentDiv() {\n        return this.$viewport.get(0)\n    }\n\n    initializationHelper() {\n\n        this.$multiLocusCloseButton = $('<div>', {class: 'igv-multi-locus-close-button'})\n        this.$viewport.append(this.$multiLocusCloseButton)\n        this.$multiLocusCloseButton.get(0).appendChild(Icon.createIcon(\"times-circle\"))\n\n        this.$multiLocusCloseButton.click(() => {\n            this.browser.removeMultiLocusPanel(this.referenceFrame)\n        })\n\n        this.$rulerLabel = $('<div>', {class: 'igv-multi-locus-ruler-label'})\n        this.$viewport.append(this.$rulerLabel)\n\n        const labelToggleHandler = e => {\n\n            e.stopPropagation()\n\n            const el = e.target\n            const [ a, b ] = this.$rulerLabel.get(0).querySelectorAll('div')\n\n            if (el.isEqualNode(a)) {\n                a.style.display = 'none'\n                b.style.display = 'block'\n            } else {\n                b.style.display = 'none'\n                a.style.display = 'block'\n            }\n\n        }\n\n        let div\n        div = document.createElement('div')\n        this.$rulerLabel.append($(div))\n\n        this.$rulerLabel.get(0).addEventListener('click', async event => {\n            event.stopPropagation()\n            await this.browser.gotoMultilocusPanel(this.referenceFrame)\n        })\n\n        this.$tooltip = $('<div>', {class: 'igv-ruler-tooltip'})\n        this.$tooltip.height(this.$viewport.height())\n\n        this.$viewport.append(this.$tooltip)\n\n        this.$tooltipContent = $('<div>')\n        this.$tooltip.append(this.$tooltipContent)\n\n        this.rulerSweeper = new RulerSweeper(this, this.$viewport.get(0).parentElement, this.browser, this.referenceFrame)\n\n        this.attachMouseHandlers(GenomeUtils.isWholeGenomeView(this.referenceFrame.chr))\n\n        this.$tooltip.hide()\n\n        this.dismissLocusLabel()\n    }\n\n    presentLocusLabel(viewportWidth) {\n\n        this.$multiLocusCloseButton.show()\n\n        this.$rulerLabel.show()\n        this.$rulerLabel.get(0).style.backgroundColor = getChrColor(this.referenceFrame.chr)\n\n        const textDiv = this.$rulerLabel.get(0).querySelector('div')\n\n        const { width } = this.$rulerLabel.get(0).getBoundingClientRect()\n\n        textDiv.innerHTML = `${ this.referenceFrame.getMultiLocusLabel(viewportWidth) }`\n        const { width:textDivWidth } = textDiv.getBoundingClientRect()\n\n        if (textDivWidth/width > 0.5) {\n            textDiv.innerHTML = `${ this.referenceFrame.getMultiLocusLabelBPLengthOnly(viewportWidth) }`\n        }\n\n        //console.log(`${ Date.now() } textDiv ${ StringUtils.numberFormatter(Math.floor(textDivWidth)) }`)\n\n    }\n\n    // Use in conjuction with .igv-multi-locus-ruler-label-square-dot css class (_dom-misc.scss)\n    dismissLocusLabel() {\n        this.$rulerLabel.hide()\n        this.$multiLocusCloseButton.hide()\n    }\n\n    attachMouseHandlers(isWholeGenomeView) {\n\n        this.namespace = `.ruler_track_viewport_${this.browser.referenceFrameList.indexOf(this.referenceFrame)}`\n\n        this.$viewport.off(this.namespace)\n\n        if (true === isWholeGenomeView) {\n\n            const index = this.browser.referenceFrameList.indexOf(this.referenceFrame)\n\n            const click = `click${this.namespace}`\n            this.$viewport.on(click, (e) => {\n\n                const {x: pixel} = DOMUtils.translateMouseCoordinates(e, this.$viewport.get(0))\n                const bp = Math.round(this.referenceFrame.start + this.referenceFrame.toBP(pixel))\n\n                let searchString\n\n                const {chr} = this.browser.genome.getChromosomeCoordinate(bp)\n\n                if (1 === this.browser.referenceFrameList.length) {\n                    searchString = chr\n                } else {\n\n                    let loci = this.browser.referenceFrameList.map(({locusSearchString}) => locusSearchString)\n\n                    loci[index] = chr\n\n                    searchString = loci.join(' ')\n                }\n\n                this.browser.search(searchString)\n            })\n\n            this.$viewport.get(0).style.cursor = 'pointer'\n        } else {\n            this.$viewport.get(0).style.cursor = 'default'\n        }\n\n    }\n\n    mouseMove(event) {\n\n        if (true === this.browser.cursorGuideVisible) {\n\n            if (undefined === currentViewport) {\n                currentViewport = this\n                this.$tooltip.show()\n            } else if (currentViewport.guid !== this.guid) {\n                if (currentViewport.$tooltip) {\n                    currentViewport.$tooltip.hide()\n                }\n                this.$tooltip.show()\n                currentViewport = this\n            } else {\n                this.$tooltip.show()\n            }\n\n            const isWholeGenome = (this.browser.isMultiLocusWholeGenomeView() || GenomeUtils.isWholeGenomeView(this.referenceFrame.chr))\n\n            if (isWholeGenome) {\n                this.$tooltip.hide()\n                return\n            }\n\n            const {x} = DOMUtils.translateMouseCoordinates(event, this.$viewport.get(0))\n            const {start, bpPerPixel} = this.referenceFrame\n            const bp = Math.round(0.5 + start + Math.max(0, x) * bpPerPixel)\n\n            this.$tooltipContent.text(StringUtils.numberFormatter(bp))\n\n            const {width: ww} = this.$tooltipContent.get(0).getBoundingClientRect()\n            const {width: w} = this.$viewport.get(0).getBoundingClientRect()\n\n            this.$tooltip.css({left: `${IGVMath.clamp(x, 0, w - ww)}px`})\n\n            // hide tooltip when movement stops\n            clearTimeout(timer)\n            timer = setTimeout(() => {\n                if (this.$tooltip) this.$tooltip.hide()\n            }, toolTipTimeout)\n\n        }\n\n    }\n\n    startSpinner() {\n    }\n\n    stopSpinner() {\n    }\n\n    dispose() {\n        this.rulerSweeper.dispose()\n        super.dispose()\n    }\n\n}\n\nexport default RulerViewport\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport $ from \"./vendor/jquery-3.3.1.slim.js\"\nimport IGVGraphics from './igv-canvas.js'\nimport {DOMUtils} from \"../node_modules/igv-ui/dist/igv-ui.js\"\nimport TrackViewport from \"./trackViewport.js\"\n\nclass IdeogramViewport extends TrackViewport {\n\n    constructor(trackView, viewportColumn, referenceFrame, width) {\n        super(trackView, viewportColumn, referenceFrame, width)\n    }\n\n    initializationHelper() {\n\n        this.canvas = document.createElement('canvas')\n        this.canvas.className = 'igv-ideogram-canvas'\n        //this.$content.append($(this.canvas))\n        this.$viewport.append($(this.canvas))\n        this.ideogram_ctx = this.canvas.getContext('2d')\n\n        this.addMouseHandlers()\n    }\n\n    addMouseHandlers() {\n        this.addViewportClickHandler(this.$viewport.get(0))\n    }\n\n    addViewportClickHandler(viewport) {\n\n        this.boundClickHandler = clickHandler.bind(this)\n        viewport.addEventListener('click', this.boundClickHandler)\n\n        function clickHandler(event) {\n\n            const {xNormalized, width} = DOMUtils.translateMouseCoordinates(event, this.ideogram_ctx.canvas)\n            const {bpLength} = this.browser.genome.getChromosome(this.referenceFrame.chr)\n            const locusLength = this.referenceFrame.bpPerPixel * width\n            const chrCoveragePercentage = locusLength / bpLength\n\n            let xPercentage = xNormalized\n            if (xPercentage - (chrCoveragePercentage / 2.0) < 0) {\n                xPercentage = chrCoveragePercentage / 2.0\n            }\n\n            if (xPercentage + (chrCoveragePercentage / 2.0) > 1.0) {\n                xPercentage = 1.0 - chrCoveragePercentage / 2.0\n            }\n\n            const ss = Math.round((xPercentage - (chrCoveragePercentage / 2.0)) * bpLength)\n            const ee = Math.round((xPercentage + (chrCoveragePercentage / 2.0)) * bpLength)\n\n            this.referenceFrame.start = ss\n            this.referenceFrame.end = ee\n            this.referenceFrame.bpPerPixel = (ee - ss) / width\n\n            this.browser.updateViews(this.referenceFrame, this.browser.trackViews, true)\n\n        }\n\n    }\n\n    setWidth(width) {\n        this.$viewport.width(width)\n    }\n\n    drawSVGWithContext(context, width, height, id, x, y, yClipOffset) {\n\n        context.saveWithTranslationAndClipRect(id, x, y, width, height, yClipOffset)\n\n        this.trackView.track.draw({\n            context,\n            referenceFrame: this.referenceFrame,\n            pixelWidth: width,\n            pixelHeight: height\n        })\n\n        context.restore()\n    }\n\n    repaint() {\n        this.draw({referenceFrame: this.referenceFrame})\n    }\n\n    draw({referenceFrame}) {\n\n        IGVGraphics.configureHighDPICanvas(this.ideogram_ctx, this.$viewport.width(), this.$viewport.height())\n\n        this.trackView.track.draw({\n            context: this.ideogram_ctx,\n            referenceFrame,\n            pixelWidth: this.$viewport.width(),\n            pixelHeight: this.$viewport.height()\n        })\n    }\n\n    startSpinner() {\n    }\n\n    stopSpinner() {\n    }\n\n}\n\nexport default IdeogramViewport\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport RulerViewport from \"../rulerViewport.js\"\nimport IdeogramViewport from \"../ideogramViewport.js\"\nimport TrackViewport from \"../trackViewport.js\"\n\n\nfunction createViewport(trackView, column, referenceFrame, width) {\n\n    if ('ruler' === trackView.track.type) {\n        return new RulerViewport(trackView, column, referenceFrame, width)\n    } else if ('ideogram' === trackView.track.id) {\n        return new IdeogramViewport(trackView, column, referenceFrame, width)\n    } else {\n        const viewportObject = new TrackViewport(trackView, column, referenceFrame, width)\n\n        // if ('sequence' === trackView.track.type) {\n        //     viewportObject.$viewport.get(0).style.marginTop = '0px'\n        // }\n\n        return viewportObject\n    }\n}\n\n\nexport {createViewport}\n","import {DOMUtils} from '../node_modules/igv-ui/dist/igv-ui.js'\nimport {appleCrayonRGB} from './util/colorPalletes.js'\n\nconst maxFontSize = 10\n\nconst fontConfigureTemplate =\n    {\n        // font: '2pt sans-serif',\n        textAlign: 'start',\n        textBaseline: 'bottom',\n        strokeStyle: 'black',\n        fillStyle: 'black'\n    }\n\nclass SampleNameViewport {\n\n    constructor(trackView, column, unused, width) {\n\n        this.guid = DOMUtils.guid()\n        this.trackView = trackView\n\n        this.browser = trackView.browser\n\n        this.viewport = DOMUtils.div({class: 'igv-viewport'})\n\n        column.appendChild(this.viewport)\n\n        if (trackView.track.height) {\n            this.viewport.style.height = `${trackView.track.height}px`\n        }\n\n        this.canvas = document.createElement('canvas')\n        this.viewport.appendChild(this.canvas)\n        this.ctx = this.canvas.getContext(\"2d\")\n\n        this.trackScrollDelta = 0\n\n        this.contentTop = 0\n\n        this.setWidth(width)\n\n        if (false === this.browser.showSampleNames) {\n            this.hide()\n        }\n\n        this.addMouseHandlers()\n    }\n\n    checkCanvas() {\n\n        const dpi = window.devicePixelRatio\n        const requiredHeight = this.viewport.clientHeight\n        const requiredWidth = this.browser.sampleNameViewportWidth\n\n        if (this.canvas.width !== requiredWidth * dpi || this.canvas.height !== requiredHeight * dpi) {\n            const canvas = this.canvas\n            canvas.width = requiredWidth * dpi\n            canvas.height = requiredHeight * dpi\n            canvas.style.width = `${requiredWidth}px`\n            canvas.style.height = `${requiredHeight}px`\n            this.ctx = this.canvas.getContext(\"2d\")\n            this.ctx.scale(dpi, dpi)\n        }\n\n    }\n\n    setTop(contentTop) {\n\n        if (typeof this.trackView.track.getSamples === 'function') {\n            this.contentTop = contentTop\n            const samples = this.trackView.track.getSamples()\n            this.repaint(samples)\n        }\n\n    }\n\n    setWidth(width) {\n        this.viewport.innerWidth = width\n        this.checkCanvas()\n    }\n\n    show() {\n        this.viewport.style.display = 'block'\n    }\n\n    hide() {\n        this.viewport.style.display = 'none'\n    }\n\n    async repaint(samples) {\n\n        this.checkCanvas()\n        this.draw({context: this.ctx, samples})\n    }\n\n    draw({context, samples}) {\n\n        if (!samples || samples.names.length === 0/* || samples.height < 1*/) {\n            return\n        }\n\n        configureFont(context, fontConfigureTemplate, samples.height)\n        const sampleNameXShim = 4\n\n        context.clearRect(0, 0, context.canvas.width, context.canvas.height)\n\n        context.fillStyle = appleCrayonRGB('lead')\n\n        const viewportHeight = this.viewport.getBoundingClientRect().height\n        let y = (samples.yOffset || 0) + this.contentTop    // contentTop will always be a negative number (top relative to viewport)\n\n        for (let name of samples.names) {\n            if (y > viewportHeight) {\n                break\n            }\n            if (y + samples.height > 0) {\n                const text = name\n                const yFont = getYFont(context, text, y, samples.height)\n                context.fillText(text, sampleNameXShim, yFont)\n\n            }\n            y += samples.height\n        }\n    }\n\n    renderSVGContext(context, {deltaX, deltaY}) {\n\n        if (typeof this.trackView.track.getSamples === 'function') {\n\n            const samples = this.trackView.track.getSamples()\n\n            const yScrollDelta = 0   // This is not relevant, scrolling is handled in \"draw\"\n\n            const {width, height} = this.viewport.getBoundingClientRect()\n\n            const str = (this.trackView.track.name || this.trackView.track.id).replace(/\\W/g, '')\n            const id = `${str}_sample_names_guid_${DOMUtils.guid()}`\n\n            context.saveWithTranslationAndClipRect(id, deltaX, deltaY + yScrollDelta, width, height, -yScrollDelta)\n\n            this.draw({context, samples})\n\n            context.restore()\n        }\n    }\n\n    addMouseHandlers() {\n        this.addViewportContextMenuHandler(this.viewport)\n    }\n\n    removeMouseHandlers() {\n        this.removeViewportContextMenuHandler(this.viewport)\n    }\n\n    addViewportContextMenuHandler(viewport) {\n        this.boundContextMenuHandler = contextMenuHandler.bind(this)\n        viewport.addEventListener('contextmenu', this.boundContextMenuHandler)\n\n        function contextMenuHandler(event) {\n\n            event.preventDefault()\n            event.stopPropagation()\n\n            const config =\n                {\n                    label: 'Name Panel Width',\n                    value: this.browser.sampleNameViewportWidth,\n                    callback: newWidth => {\n                        this.browser.sampleNameViewportWidth = parseInt(newWidth)\n                        for (let {sampleNameViewport} of this.browser.trackViews) {\n                            sampleNameViewport.setWidth(this.browser.sampleNameViewportWidth)\n                        }\n                        this.browser.layoutChange()\n                    }\n                }\n\n            this.browser.inputDialog.present(config, event)\n        }\n\n    }\n\n    removeViewportContextMenuHandler(viewport) {\n        viewport.removeEventListener('contextmenu', this.boundContextMenuHandler)\n    }\n\n    dispose() {\n        this.removeMouseHandlers()\n        this.viewport.remove()\n    }\n}\n\nfunction getYFont(context, text, y, height) {\n    return y + height - getSampleNameYShim(context, text, height)\n}\n\nfunction getSampleNameYShim(context, text, h) {\n    const {actualBoundingBoxAscent, actualBoundingBoxDescent} = context.measureText(text)\n    return (h - (actualBoundingBoxAscent + actualBoundingBoxDescent)) / 2\n}\n\nfunction configureFont(ctx, {textAlign, textBaseline, strokeStyle, fillStyle}, sampleHeight) {\n    const pixels = Math.min(sampleHeight, maxFontSize)\n    ctx.font = `${pixels}px sans-serif`\n    ctx.textAlign = textAlign\n    ctx.textBaseline = textBaseline\n    ctx.fillStyle = fillStyle\n}\n\nexport default SampleNameViewport\n","\nimport MenuUtils from \"./menuUtils.js\"\nimport {DOMUtils, makeDraggable, UIUtils} from \"../../node_modules/igv-ui/dist/igv-ui.js\"\nimport {GenericColorPicker} from '../../node_modules/igv-ui/dist/igv-ui.js'\nimport {createCheckbox} from \"../igv-icons.js\"\n\nconst MenuPopup = function (parent) {\n\n    this.popover = DOMUtils.div({class: 'igv-menu-popup'})\n    parent.appendChild(this.popover)\n\n    const header = DOMUtils.div({class: 'igv-menu-popup-header'})\n    this.popover.appendChild(header)\n\n    UIUtils.attachDialogCloseHandlerWithParent(header, () => this.hide())\n\n    this.popoverContent = DOMUtils.div()\n    this.popover.appendChild(this.popoverContent)\n\n    makeDraggable(this.popover, header)\n\n    header.addEventListener('click', e => {\n        e.stopPropagation()\n        e.preventDefault()\n        // absorb click to prevent it leaking through to parent DOM element\n    })\n\n    this.hide()\n\n}\n\nMenuPopup.prototype.hide = function () {\n    this.popover.style.display = 'none'\n}\n\nMenuPopup.prototype.presentMenuList = function (menuList) {\n\n    hideAllMenuPopups()\n\n    if (menuList.length > 0) {\n\n        this.popoverContent.innerHTML = ''\n\n        menuList = MenuUtils.trackMenuItemListHelper(menuList, this)\n\n        for (let item of menuList) {\n\n            if (item.init) {\n                item.init()\n            }\n\n            let $e = item.object\n            if (0 === menuList.indexOf(item)) {\n                $e.removeClass('igv-track-menu-border-top')\n            }\n\n            if ($e.hasClass('igv-track-menu-border-top') || $e.hasClass('igv-menu-popup-check-container')) {\n                // do nothing\n            } else if ($e.is('div')) {\n                $e.addClass('igv-menu-popup-shim')\n            }\n\n            this.popoverContent.appendChild($e.get(0))\n\n        }\n\n        // NOTE: style.display most NOT be 'none' when calculating width. a display = 'none' will always\n        //       yield a width of zero (0).\n        this.popover.style.display = 'flex'\n\n        const {width} = this.popover.getBoundingClientRect()\n\n        this.popover.style.left = `${-width}px`\n        this.popover.style.top = `${0}px`\n\n    }\n}\n\nMenuPopup.prototype.presentTrackContextMenu = function (e, menuItems) {\n\n    this.popoverContent.innerHTML = ''\n\n    const menuElements = createMenuElements(menuItems, this.popover)\n    for (let {el} of menuElements) {\n        this.popoverContent.appendChild(el)\n    }\n\n    present(e, this.popover)\n\n}\n\nMenuPopup.prototype.dispose = function () {\n\n    this.popoverContent.innerHTML = ''\n    this.popover.innerHTML = ''\n\n    Object.keys(this).forEach(function (key) {\n        this[key] = undefined\n    })\n}\n\nfunction createMenuElements(itemList, popover) {\n\n    return itemList.map(item => {\n\n        let el\n\n        if (typeof item === 'string' && '<hr/>' === item) {\n            el = document.createElement('hr')\n        } else if (typeof item === 'string') {\n            el = DOMUtils.div({class: 'context-menu'})\n            el.innerHTML = item\n        } else if (typeof item === 'Node') {\n            el = item\n        } else {\n            if (typeof item.init === 'function') {\n                item.init()\n            }\n\n            if (\"checkbox\" === item.type) {\n                el = createCheckbox(\"Show all bases\", item.value)\n            } else if (\"color\" === item.type) {\n\n                const colorPicker = new GenericColorPicker({parent: popover.parentElement, width: 364})\n                colorPicker.configure(undefined, {color: color => item.click(color)})\n\n                el = DOMUtils.div({class: 'context-menu'})\n                if (typeof item.label === 'string') {\n                    el.innerHTML = item.label\n                }\n                const clickHandler = e => {\n                    colorPicker.show()\n                    DOMUtils.hide(popover)\n                    e.preventDefault()\n                    e.stopPropagation()\n                }\n                el.addEventListener('click', clickHandler)\n                el.addEventListener('touchend', clickHandler)\n                el.addEventListener('mouseup', function (e) {\n                    e.preventDefault()\n                    e.stopPropagation()\n                })\n            } else {\n                el = DOMUtils.div({class: 'context-menu'})\n                if (typeof item.label === 'string') {\n                    el.innerHTML = item.label\n                }\n            }\n\n            if (item.click && \"color\" !== item.type) {\n                el.addEventListener('click', handleClick)\n                el.addEventListener('touchend', handleClick)\n                el.addEventListener('mouseup', function (e) {\n                    e.preventDefault()\n                    e.stopPropagation()\n                })\n\n                // eslint-disable-next-line no-inner-declarations\n                function handleClick(e) {\n                    item.click()\n                    DOMUtils.hide(popover)\n                    e.preventDefault()\n                    e.stopPropagation()\n                }\n            }\n        }\n\n        return {el, init: item.init}\n    })\n\n}\n\nfunction present(e, popover) {\n\n    // NOTE: style.display most NOT be 'none' when calculating width. a display = 'none' will always\n    //       yield a width of zero (0).\n    popover.style.display = 'flex'\n\n    const {x, y} = DOMUtils.translateMouseCoordinates(e, popover.parentNode)\n    const {width} = popover.getBoundingClientRect()\n    const xmax = x + width\n\n    const {width: parentWidth} = popover.parentNode.getBoundingClientRect()\n\n    popover.style.left = `${xmax > parentWidth ? (x - (xmax - parentWidth)) : x}px`\n    popover.style.top = `${y}px`\n\n}\n\nconst hideAllMenuPopups = () => {\n\n    const menus = document.querySelectorAll('.igv-menu-popup')\n    for (let i = 0; i < menus.length; i++) {\n        menus[i].style.display = 'none'\n    }\n\n}\n\nexport default MenuPopup\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\nimport $ from \"./vendor/jquery-3.3.1.slim.js\"\nimport {doAutoscale} from \"./util/igvUtils.js\"\nimport {createViewport} from \"./util/viewportUtils.js\"\nimport {FeatureUtils, IGVColor, StringUtils} from '../node_modules/igv-utils/src/index.js'\nimport {DOMUtils, Icon} from '../node_modules/igv-ui/dist/igv-ui.js'\nimport SampleNameViewport from './sampleNameViewport.js'\nimport MenuPopup from \"./ui/menuPopup.js\"\nimport MenuUtils from \"./ui/menuUtils.js\"\n\nconst igv_axis_column_width = 50\nconst scrollbarExclusionTypes = new Set(['ruler', 'ideogram'])\nconst colorPickerExclusionTypes = new Set(['ruler', 'sequence', 'ideogram'])\n\nclass TrackView {\n\n    constructor(browser, columnContainer, track) {\n        this.browser = browser\n        this.track = track\n        track.trackView = this\n        this.addDOMToColumnContainer(browser, columnContainer, browser.referenceFrameList)\n    }\n\n    /**\n     * Start a spinner for the track on any of its viewports.  In practice this is called during initialization\n     * when there is only one.\n     */\n    startSpinner() {\n        if (this.viewports && this.viewports.length > 0) {\n            this.viewports[0].startSpinner()\n        }\n    }\n\n    stopSpinner() {\n        if (this.viewports && this.viewports.length > 0) {\n            this.viewports[0].stopSpinner()\n        }\n    }\n\n    addDOMToColumnContainer(browser, columnContainer, referenceFrameList) {\n\n        // Axis\n        this.axis = this.createAxis(browser, this.track)\n\n        // Create a viewport for each reference frame\n        this.viewports = []\n        const viewportWidth = browser.calculateViewportWidth(referenceFrameList.length)\n        const viewportColumns = columnContainer.querySelectorAll('.igv-column')\n        for (let i = 0; i < viewportColumns.length; i++) {\n            const viewport = createViewport(this, viewportColumns[i], referenceFrameList[i], viewportWidth)\n            this.viewports.push(viewport)\n        }\n\n        // SampleName Viewport\n        this.sampleNameViewport = new SampleNameViewport(this, browser.columnContainer.querySelector('.igv-sample-name-column'), undefined, browser.sampleNameViewportWidth)\n\n        // Track Scrollbar\n        this.createTrackScrollbar(browser)\n\n        // Track Drag\n        this.createTrackDragHandle(browser)\n\n        // Track Gear\n        this.createTrackGearPopup(browser)\n\n    }\n\n    createAxis(browser, track) {\n\n        const axis = DOMUtils.div()\n        browser.columnContainer.querySelector('.igv-axis-column').appendChild(axis)\n\n        axis.style.height = `${track.height}px`\n\n        if (typeof track.paintAxis === 'function') {\n            if (track.dataRange) {\n                axis.addEventListener('click', () => {\n                    browser.dataRangeDialog.configure(this)\n                    browser.dataRangeDialog.present($(browser.columnContainer))\n                })\n            }\n\n\n            const {width, height} = axis.getBoundingClientRect()\n            this.axisCanvas = document.createElement('canvas')\n            this.axisCanvas.style.width = `${width}px`\n            this.axisCanvas.style.height = `${height}px`\n            axis.appendChild(this.axisCanvas)\n        }\n\n        return axis\n\n    }\n\n    resizeAxisCanvas(width, height) {\n\n        this.axis.style.width = `${width}px`\n        this.axis.style.height = `${height}px`\n\n        if (typeof this.track.paintAxis === 'function') {\n            // Size the canvas in CSS (logical) pixels.  The buffer size will be set when painted.\n            this.axisCanvas.style.width = `${width}px`\n            this.axisCanvas.style.height = `${height}px`\n\n        }\n    }\n\n    removeDOMFromColumnContainer() {\n\n        // Axis\n        if (this.boundAxisClickHander) {\n            this.removeAxisEventListener(this.axis)\n        }\n        this.axis.remove()\n\n        // Track Viewports\n        for (let viewport of this.viewports) {\n            viewport.$viewport.remove()\n        }\n\n        // SampleName Viewport\n        this.sampleNameViewport.dispose()\n\n        // empty trackScrollbar Column\n        this.removeTrackScrollMouseHandlers()\n        this.outerScroll.remove()\n\n        // empty trackDrag Column\n        this.removeTrackDragMouseHandlers()\n        this.dragHandle.remove()\n\n        // empty trackGear Column\n        this.removeTrackGearMouseHandlers()\n        this.gearContainer.remove()\n\n    }\n\n    renderSVGContext(context, {deltaX, deltaY}) {\n\n        renderSVGAxis(context, this.track, this.axisCanvas, deltaX, deltaY)\n\n        const {width: axisWidth} = this.axis.getBoundingClientRect()\n\n        const {y} = this.viewports[0].$viewport.get(0).getBoundingClientRect()\n\n        let delta =\n            {\n                deltaX: axisWidth + deltaX,\n                deltaY: y + deltaY\n            }\n\n        for (let viewport of this.viewports) {\n            viewport.renderSVGContext(context, delta)\n            const {width} = viewport.$viewport.get(0).getBoundingClientRect()\n            delta.deltaX += width\n        }\n        \n        if (true === this.browser.showSampleNames) {\n            this.sampleNameViewport.renderSVGContext(context, delta)\n        }\n    }\n\n    dataRange() {\n        return this.track.dataRange ? this.track.dataRange : undefined\n    }\n\n    setDataRange(min, max) {\n        if (min !== undefined) {\n            this.track.dataRange.min = min\n        }\n        if (max !== undefined) {\n            this.track.dataRange.max = max\n        }\n        this.track.autoscale = false\n        this.repaintViews()\n    }\n\n    presentColorPicker(key) {\n\n        if (false === colorPickerExclusionTypes.has(this.track.type)) {\n\n            const trackColors = []\n            const color = this.track.color || this.track.defaultColor\n            if (StringUtils.isString(color)) {\n                trackColors.push(color)\n            }\n            if (this.track.altColor && StringUtils.isString(this.track.altColor)) {\n                trackColors.push(this.track.altColor)\n            }\n            const defaultColors = trackColors.map(c => c.startsWith(\"#\") ? c : c.startsWith(\"rgb(\") ? IGVColor.rgbToHex(c) : IGVColor.colorNameToHex(c))\n            const colorHandlers =\n                {\n                    color: color => {\n                        this.track.color = color\n                        this.repaintViews()\n                    },\n                    altColor: color => {\n                        this.track.altColor = color\n                        this.repaintViews()\n                    }\n\n                }\n            this.browser.genericColorPicker.configure(defaultColors, colorHandlers)\n            this.browser.genericColorPicker.setActiveColorHandler(key)\n            this.browser.genericColorPicker.show()\n        }\n\n    }\n\n    setTrackHeight(newHeight, force) {\n\n        if (!force) {\n            if (this.track.minHeight) {\n                newHeight = Math.max(this.track.minHeight, newHeight)\n            }\n            if (this.track.maxHeight) {\n                newHeight = Math.min(this.track.maxHeight, newHeight)\n            }\n        }\n\n        this.track.height = newHeight\n\n        this.resizeAxisCanvas(this.axis.clientWidth, this.track.height)\n\n        if (typeof this.track.paintAxis === 'function') {\n            this.paintAxis()\n        }\n\n        for (let {$viewport} of this.viewports) {\n            $viewport.height(newHeight)\n        }\n\n        this.sampleNameViewport.viewport.style.height = `${newHeight}px`\n\n        // If the track does not manage its own content height set it equal to the viewport height here\n        if (typeof this.track.computePixelHeight !== \"function\") {\n            for (let vp of this.viewports) {\n                vp.setContentHeight(newHeight)\n            }\n        }\n\n        this.repaintViews()\n\n        if (false === scrollbarExclusionTypes.has(this.track.type)) {\n            this.updateScrollbar()\n        }\n\n        this.dragHandle.style.height = `${newHeight}px`\n        this.gearContainer.style.height = `${newHeight}px`\n\n    }\n\n    updateScrollbar() {\n\n        const viewportHeight = this.viewports[0].$viewport.height()\n        this.outerScroll.style.height = `${viewportHeight}px`\n\n        const viewportContentHeight = this.maxViewportContentHeight()\n        const innerScrollHeight = Math.round((viewportHeight / viewportContentHeight) * viewportHeight)\n\n        if (viewportContentHeight > viewportHeight) {\n            this.innerScroll.style.display = 'block'\n            this.innerScroll.style.height = `${innerScrollHeight}px`\n        } else {\n            this.innerScroll.style.display = 'none'\n        }\n    }\n\n    moveScroller(delta) {\n\n        const y = $(this.innerScroll).position().top + delta\n        const top = Math.min(Math.max(0, y), this.outerScroll.clientHeight - this.innerScroll.clientHeight)\n        $(this.innerScroll).css('top', `${top}px`)\n\n        const contentHeight = this.maxViewportContentHeight()\n        const contentTop = -Math.round(top * (contentHeight / this.viewports[0].$viewport.height()))\n\n        for (let viewport of this.viewports) {\n            viewport.setTop(contentTop)\n        }\n\n        this.sampleNameViewport.trackScrollDelta = delta\n        this.sampleNameViewport.setTop(contentTop)\n\n    }\n\n    isLoading() {\n        for (let viewport of this.viewports) {\n            if (viewport.isLoading()) return true\n        }\n    }\n\n    /**\n     * Repaint all viewports without loading any new data.   Use this for events that change visual aspect of data,\n     * e.g. color, sort order, etc, but do not change the genomic state.\n     */\n    repaintViews() {\n\n        for (let viewport of this.viewports) {\n            if (viewport.isVisible()) {\n                viewport.repaint()\n            }\n        }\n\n        if (typeof this.track.paintAxis === 'function') {\n            this.paintAxis()\n        }\n\n        // Repaint sample names last\n        this.repaintSamples()\n    }\n\n    repaintSamples() {\n\n        if (typeof this.track.getSamples === 'function') {\n            const samples = this.track.getSamples()\n            this.sampleNameViewport.repaint(samples)\n        }\n    }\n\n    // track labels\n    setTrackLabelName(name) {\n        this.viewports.forEach(viewport => viewport.setTrackLabel(name))\n    }\n\n    /**\n     * Called in response to a window resize event, change in # of multilocus panels, or other event that changes\n     * the width of the track view.\n     *\n     * @param viewportWidth  The width of each viewport in this track view.\n     */\n    resize(viewportWidth) {\n        for (let viewport of this.viewports) {\n            viewport.setWidth(viewportWidth)\n        }\n    }\n\n    /**\n     * Update viewports to reflect current genomic state, possibly loading additional data.\n     *\n     * @param force - if true, force a repaint even if no new data is loaded\n     * @returns {Promise<void>}\n     */\n    async updateViews() {\n\n        if (!(this.browser && this.browser.referenceFrameList)) return\n\n        const visibleViewports = this.viewports.filter(viewport => viewport.isVisible())\n\n        // Shift viewports left/right to current genomic state (pans canvas)\n        visibleViewports.forEach(viewport => viewport.shift())\n\n        // If dragging (panning) return\n        if (this.browser.dragObject) {\n            return\n        }\n\n        // Filter zoomed out views.  This has the side effect or turning off or no the zoomed out notice\n        const viewportsToRepaint = visibleViewports.filter(vp => vp.needsRepaint()).filter(viewport => viewport.checkZoomIn())\n\n        // Get viewports that require a data load\n        const viewportsToReload = viewportsToRepaint.filter(viewport => viewport.needsReload())\n\n        // Trigger viewport to load features needed to cover current genomic range\n        // NOTE: these must be loaded synchronously, do not user Promise.all,  not all file readers are thread safe\n        for (let viewport of viewportsToReload) {\n            await viewport.loadFeatures()\n        }\n\n        if (this.disposed) return   // Track was removed during load\n\n        // Special case for variant tracks in multilocus view.  The # of rows to allocate to the variant (site)\n        // section depends on data from all the views.  We only need to adjust this however if any data was loaded\n        // (i.e. reloadableViewports.length > 0)\n        if (this.track && typeof this.track.variantRowCount === 'function' && viewportsToReload.length > 0) {\n            let maxRow = 0\n            for (let viewport of this.viewports) {\n                if (viewport.featureCache && viewport.featureCache.features) {\n                    maxRow = Math.max(maxRow, viewport.featureCache.features.reduce((a, f) => Math.max(a, f.row || 0), 0))\n                }\n            }\n            const current = this.track.nVariantRows\n            if (current !== maxRow + 1) {\n                this.track.variantRowCount(maxRow + 1)\n                for (let viewport of this.viewports) {\n                    viewport.checkContentHeight()\n                }\n            }\n        }\n\n        if (this.track.autoscale) {\n            let allFeatures = []\n            for (let visibleViewport of visibleViewports) {\n                const referenceFrame = visibleViewport.referenceFrame\n                const start = referenceFrame.start\n                const end = start + referenceFrame.toBP(visibleViewport.getWidth())\n                if (visibleViewport.featureCache && visibleViewport.featureCache.features) {\n                    // If the \"features\" object has a getMax function use it.  Currently only alignmentContainer implements this, for coverage.\n                    if (typeof visibleViewport.featureCache.features.getMax === 'function') {\n                        const max = visibleViewport.featureCache.features.getMax(start, end)\n                        allFeatures.push({value: max})\n                    } else {\n                        const viewFeatures = FeatureUtils.findOverlapping(visibleViewport.featureCache.features, start, end)\n                        for (let f of viewFeatures) {\n                            allFeatures.push(f)\n                        }\n                    }\n                }\n            }\n            if (typeof this.track.doAutoscale === 'function') {\n                this.track.dataRange = this.track.doAutoscale(allFeatures)\n            } else {\n                this.track.dataRange = doAutoscale(allFeatures)\n            }\n        }\n\n        const refreshView = (this.track.autoscale || this.track.autoscaleGroup || this.track.type === 'ruler')\n        for (let vp of visibleViewports) {\n            if (viewportsToRepaint.includes(vp)) {\n                vp.repaint()\n            } else if (refreshView) {\n                vp.refresh()\n            }\n        }\n\n        this.adjustTrackHeight()\n\n        // Repaint sample names last\n        this.repaintSamples()\n\n        this.updateRulerViewportLabels()\n    }\n\n    clearCachedFeatures() {\n        for (let viewport of this.viewports) {\n            viewport.clearCache()\n        }\n    }\n\n    updateRulerViewportLabels() {\n\n        const viewportWidth = this.browser.calculateViewportWidth(this.viewports.length)\n\n        for (let viewport of this.viewports) {\n            if ('ruler' === this.track.type) {\n                if (this.viewports.length > 1) {\n                    viewport.presentLocusLabel(viewportWidth)\n                } else {\n                    viewport.dismissLocusLabel()\n                }\n            }\n        }\n\n    }\n\n    /**\n     * Return a promise to get all in-view features across all viewports.  Used for group autoscaling.\n     */\n    async getInViewFeatures() {\n\n        if (!(this.browser && this.browser.referenceFrameList)) {\n            return []\n        }\n\n        let allFeatures = []\n        const visibleViewports = this.viewports.filter(viewport => viewport.isVisible())\n        for (let vp of visibleViewports) {\n\n            const referenceFrame = vp.referenceFrame\n            const {chr, start, bpPerPixel} = vp.referenceFrame\n            const end = start + referenceFrame.toBP(vp.getWidth())\n            const needsReload = !vp.featureCache || !vp.featureCache.containsRange(chr, start, end, bpPerPixel)\n\n            if (needsReload) {\n                await vp.loadFeatures()\n            }\n            if (vp.featureCache && vp.featureCache.features) {\n\n                if (typeof vp.featureCache.features.getMax === 'function') {\n                    const max = vp.featureCache.features.getMax(start, end)\n                    allFeatures.push({value: max})\n                } else {\n                    const vpFeatures = typeof vp.featureCache.queryFeatures === 'function' ?\n                        vp.featureCache.queryFeatures(chr, start, end) :\n                        FeatureUtils.findOverlapping(vp.featureCache.features, start, end)\n                    allFeatures = allFeatures.concat(vpFeatures)\n                }\n            }\n        }\n        return allFeatures\n    }\n\n    checkContentHeight() {\n\n        for (let viewport of this.viewports) {\n            viewport.checkContentHeight()\n        }\n        this.adjustTrackHeight()\n\n    }\n\n    adjustTrackHeight() {\n\n        var contentHeight = this.maxViewportContentHeight()\n        if (this.track.autoHeight) {\n            this.setTrackHeight(contentHeight, false)\n        } else if (this.track.paintAxis) {   // Avoid duplication, paintAxis is already called in setTrackHeight\n            this.paintAxis()\n        }\n\n        if (false === scrollbarExclusionTypes.has(this.track.type)) {\n\n            // Adjust scrollbar, if needed, to insure content is in view\n            const currentTop = this.viewports[0].getContentTop()\n            const viewportHeight = this.viewports[0].$viewport.height()\n            const minTop = Math.min(0, viewportHeight - contentHeight)\n            if(currentTop < minTop) {\n                 for (let viewport of this.viewports) {\n                    viewport.setTop(minTop)\n                }\n            }\n            this.updateScrollbar()\n        }\n    }\n\n    createTrackScrollbar(browser) {\n\n        const outerScroll = DOMUtils.div()\n        browser.columnContainer.querySelector('.igv-scrollbar-column').appendChild(outerScroll)\n        outerScroll.style.height = `${this.track.height}px`\n        this.outerScroll = outerScroll\n\n        if (false === scrollbarExclusionTypes.has(this.track.type)) {\n            const innerScroll = DOMUtils.div()\n            outerScroll.appendChild(innerScroll)\n            this.innerScroll = innerScroll\n\n            this.addTrackScrollMouseHandlers(browser)\n        }\n\n    }\n\n    createTrackDragHandle(browser) {\n\n        const className = 'ideogram' === this.track.type || 'ruler' === this.track.type ? 'igv-track-drag-shim' : 'igv-track-drag-handle'\n        this.dragHandle = DOMUtils.div({class: className})\n        browser.columnContainer.querySelector('.igv-track-drag-column').appendChild(this.dragHandle)\n        this.dragHandle.style.height = `${this.track.height}px`\n\n        this.addTrackDragMouseHandlers(browser)\n\n    }\n\n    createTrackGearPopup(browser) {\n\n        this.gearContainer = DOMUtils.div()\n        browser.columnContainer.querySelector('.igv-gear-menu-column').appendChild(this.gearContainer)\n        this.gearContainer.style.height = `${this.track.height}px`\n\n        if (true === this.track.ignoreTrackMenu) {\n            // do nothing\n        } else {\n\n            this.gear = DOMUtils.div()\n            this.gearContainer.appendChild(this.gear)\n            this.gear.appendChild(Icon.createIcon('cog'))\n\n            this.trackGearPopup = new MenuPopup(this.gear)\n\n            this.addTrackGearMouseHandlers()\n        }\n\n    }\n\n    addAxisEventListener(axis) {\n\n        this.boundAxisClickHander = axisClickHandler.bind(this)\n        axis.addEventListener('click', this.boundAxisClickHander)\n\n        function axisClickHandler(event) {\n            this.browser.dataRangeDialog.configure(this)\n            this.browser.dataRangeDialog.present($(this.browser.columnContainer))\n        }\n\n    }\n\n    removeAxisEventListener(axis) {\n        axis.removeEventListener('click', this.boundAxisClickHander)\n    }\n\n    addTrackScrollMouseHandlers(browser) {\n\n        // Mouse Down\n        this.boundTrackScrollMouseDownHandler = trackScrollMouseDownHandler.bind(this)\n        this.innerScroll.addEventListener('mousedown', this.boundTrackScrollMouseDownHandler)\n\n        function trackScrollMouseDownHandler(event) {\n\n            event.stopPropagation()\n\n            const {y} = DOMUtils.pageCoordinates(event)\n\n            $(this.innerScroll).data('yDown', y.toString())\n\n            this.boundColumnContainerMouseMoveHandler = columnContainerMouseMoveHandler.bind(this)\n            browser.columnContainer.addEventListener('mousemove', this.boundColumnContainerMouseMoveHandler)\n\n            function columnContainerMouseMoveHandler(event) {\n\n                event.stopPropagation()\n\n                const {y} = DOMUtils.pageCoordinates(event)\n\n                this.moveScroller(y - parseInt($(this.innerScroll).data('yDown')))\n\n                $(this.innerScroll).data('yDown', y.toString())\n\n            }\n        }\n\n        this.boundColumnContainerMouseUpHandler = columnContainerMouseUpHandler.bind(this)\n        browser.columnContainer.addEventListener('mouseup', this.boundColumnContainerMouseUpHandler)\n\n        function columnContainerMouseUpHandler(event) {\n            browser.columnContainer.removeEventListener('mousemove', this.boundColumnContainerMouseMoveHandler)\n        }\n\n    }\n\n    removeTrackScrollMouseHandlers() {\n        if (false === scrollbarExclusionTypes.has(this.track.type)) {\n            this.innerScroll.removeEventListener('mousedown', this.boundTrackScrollMouseDownHandler)\n            this.browser.columnContainer.removeEventListener('mouseup', this.boundColumnContainerMouseUpHandler)\n            this.browser.columnContainer.removeEventListener('mousemove', this.boundColumnContainerMouseMoveHandler)\n        }\n    }\n\n    addTrackDragMouseHandlers(browser) {\n\n        if ('ideogram' === this.track.id || 'ruler' === this.track.id) {\n            // do nothing\n        } else {\n\n            let currentDragHandle = undefined\n\n            // Mouse Down\n            this.boundTrackDragMouseDownHandler = trackDragMouseDownHandler.bind(this)\n            this.dragHandle.addEventListener('mousedown', this.boundTrackDragMouseDownHandler)\n\n            function trackDragMouseDownHandler(event) {\n\n                event.preventDefault()\n\n                currentDragHandle = event.target\n                currentDragHandle.classList.add('igv-track-drag-handle-hover')\n\n                browser.startTrackDrag(this)\n\n            }\n\n            // Mouse Up\n            this.boundDocumentTrackDragMouseUpHandler = documentTrackDragMouseUpHandler.bind(this)\n            document.addEventListener('mouseup', this.boundDocumentTrackDragMouseUpHandler)\n\n            function documentTrackDragMouseUpHandler(event) {\n\n                browser.endTrackDrag()\n\n                if (currentDragHandle && event.target !== currentDragHandle) {\n                    currentDragHandle.classList.remove('igv-track-drag-handle-hover')\n                }\n\n                currentDragHandle = undefined\n            }\n\n            // Mouse Enter\n            this.boundTrackDragMouseEnterHandler = trackDragMouseEnterHandler.bind(this)\n            this.dragHandle.addEventListener('mouseenter', this.boundTrackDragMouseEnterHandler)\n\n            function trackDragMouseEnterHandler(event) {\n                event.preventDefault()\n\n                if (undefined === currentDragHandle) {\n                    event.target.classList.add('igv-track-drag-handle-hover')\n                }\n\n                browser.updateTrackDrag(this)\n\n            }\n\n            // Mouse Out\n            this.dragHandle.addEventListener('mouseout', e => {\n                e.preventDefault()\n\n                if (undefined === currentDragHandle) {\n                    e.target.classList.remove('igv-track-drag-handle-hover')\n                }\n            })\n\n            this.boundTrackDragMouseOutHandler = trackDragMouseOutHandler.bind(this)\n            this.dragHandle.addEventListener('mouseout', this.boundTrackDragMouseOutHandler)\n\n            function trackDragMouseOutHandler(event) {\n                event.preventDefault()\n\n                if (undefined === currentDragHandle) {\n                    event.target.classList.remove('igv-track-drag-handle-hover')\n                }\n            }\n\n        }\n\n    }\n\n    removeTrackDragMouseHandlers() {\n\n        if ('ideogram' === this.track.id || 'ruler' === this.track.id) {\n            // do nothing\n        } else {\n            this.dragHandle.removeEventListener('mousedown', this.boundTrackDragMouseDownHandler)\n            document.removeEventListener('mouseup', this.boundDocumentTrackDragMouseUpHandler)\n            this.dragHandle.removeEventListener('mouseup', this.boundTrackDragMouseEnterHandler)\n            this.dragHandle.removeEventListener('mouseout', this.boundTrackDragMouseOutHandler)\n        }\n\n    }\n\n    addTrackGearMouseHandlers() {\n        if (true === this.track.ignoreTrackMenu) {\n            // do nothing\n        } else {\n\n            this.boundTrackGearClickHandler = trackGearClickHandler.bind(this)\n            this.gear.addEventListener('click', this.boundTrackGearClickHandler)\n\n            function trackGearClickHandler(event) {\n                event.preventDefault()\n                event.stopPropagation()\n                this.trackGearPopup.presentMenuList(MenuUtils.trackMenuItemList(this))\n            }\n\n        }\n\n    }\n\n    removeTrackGearMouseHandlers() {\n        if (true === this.track.ignoreTrackMenu) {\n            // do nothing\n        } else {\n            this.gear.removeEventListener('click', this.boundTrackGearClickHandler)\n        }\n\n    }\n\n    /**\n     * Do any cleanup here\n     */\n    dispose() {\n\n        this.removeAxisEventListener(this.axis)\n        this.axis.remove()\n\n        for (let viewport of this.viewports) {\n            viewport.dispose()\n        }\n\n        this.sampleNameViewport.dispose()\n\n        this.removeTrackScrollMouseHandlers()\n        this.outerScroll.remove()\n\n        this.removeTrackDragMouseHandlers()\n        this.dragHandle.remove()\n\n        this.removeTrackGearMouseHandlers()\n        this.gearContainer.remove()\n\n        if (typeof this.track.dispose === \"function\") {\n            this.track.dispose()\n        }\n\n        for (let key of Object.keys(this)) {\n            this[key] = undefined\n        }\n\n        if (this.alert) {\n            this.alert.container.remove()    // This is quite obviously a hack, need a \"dispose\" method on AlertDialog\n        }\n\n        this.disposed = true\n    }\n\n    paintAxis() {\n\n        if (typeof this.track.paintAxis === 'function') {\n\n            // Set the canvas buffer size, this is the resolution it is drawn at.  This is done here in case the browser\n            // has been drug between screens at different dpi resolutions since the last repaint\n            const {width, height} = this.axisCanvas.getBoundingClientRect()\n            const dpi = window.devicePixelRatio || 1\n            this.axisCanvas.height = dpi * height\n            this.axisCanvas.width = dpi * width\n\n            // Get a scaled context to draw aon\n            const axisCanvasContext = this.axisCanvas.getContext('2d')\n            axisCanvasContext.scale(dpi, dpi)\n\n            this.track.paintAxis(axisCanvasContext, width, height)\n        }\n    }\n\n    maxViewportContentHeight() {\n        return Math.max(this.viewports.map(viewport => viewport.getContentHeight()))\n    }\n\n}\n\nfunction renderSVGAxis(context, track, axisCanvas, deltaX, deltaY) {\n\n    if (typeof track.paintAxis === 'function') {\n\n        const {y, width, height} = axisCanvas.getBoundingClientRect()\n\n        const str = (track.name || track.id).replace(/\\W/g, '')\n        const id = `${str}_axis_guid_${DOMUtils.guid()}`\n\n        context.saveWithTranslationAndClipRect(id, deltaX, y + deltaY, width, height, 0)\n\n        track.paintAxis(context, width, height)\n\n        context.restore()\n    }\n\n}\n\n\nexport {igv_axis_column_width}\nexport default TrackView\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport FeatureSource from './featureSource.js'\nimport TDFSource from \"../tdf/tdfSource.js\"\nimport TrackBase from \"../trackBase.js\"\nimport BWSource from \"../bigwig/bwSource.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport paintAxis from \"../util/paintAxis.js\"\nimport {IGVColor, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport MenuUtils from \"../ui/menuUtils.js\"\n\nconst DEFAULT_COLOR = 'rgb(150, 150, 150)'\n\nclass WigTrack extends TrackBase {\n\n    static defaults = {\n        height: 50,\n        flipAxis: false,\n        logScale: false,\n        windowFunction: 'mean',\n        graphType: 'bar',\n        autoscale: true,\n        normalize: undefined,\n        scaleFactor: undefined\n    }\n\n    constructor(config, browser) {\n        super(config, browser)\n    }\n\n    init(config) {\n\n        super.init(config)\n\n        this.type = \"wig\"\n        this.featureType = 'numeric'\n        this.paintAxis = paintAxis\n\n        const format = config.format ? config.format.toLowerCase() : config.format\n        if (config.featureSource) {\n            this.featureSource = config.featureSource\n            delete config.featureSource\n        } else if (\"bigwig\" === format) {\n            this.featureSource = new BWSource(config, this.browser.genome)\n        } else if (\"tdf\" === format) {\n            this.featureSource = new TDFSource(config, this.browser.genome)\n        } else {\n            this.featureSource = FeatureSource(config, this.browser.genome)\n        }\n\n\n        // Override autoscale default\n        if(config.max === undefined || config.autoscale === true) {\n            this.autoscale = true\n        } else {\n            this.dataRange = {\n                min: config.min || 0,\n                max: config.max\n            }\n        }\n    }\n\n    async postInit() {\n        const header = await this.getHeader()\n        if (this.disposed) return   // This track was removed during async load\n        if (header) this.setTrackProperties(header)\n    }\n\n    async getFeatures(chr, start, end, bpPerPixel) {\n        const features = await this.featureSource.getFeatures({\n            chr,\n            start,\n            end,\n            bpPerPixel,\n            visibilityWindow: this.visibilityWindow,\n            windowFunction: this.windowFunction\n        })\n        if (this.normalize && this.featureSource.normalizationFactor) {\n            const scaleFactor = this.featureSource.normalizationFactor\n            for (let f of features) {\n                f.value *= scaleFactor\n            }\n        }\n        if (this.scaleFactor) {\n            const scaleFactor = this.scaleFactor\n            for (let f of features) {\n                f.value *= scaleFactor\n            }\n        }\n        return features\n    }\n\n    menuItemList() {\n        let items = []\n\n        if (this.flipAxis !== undefined) {\n            items.push('<hr>')\n            items.push({\n                label: \"Flip y-axis\",\n                click: () => {\n                    this.flipAxis = !this.flipAxis\n                    this.trackView.repaintViews()\n                }\n            })\n        }\n\n        items = items.concat(MenuUtils.numericDataMenuItems(this.trackView))\n\n        return items\n    }\n\n    async getHeader() {\n\n        if (typeof this.featureSource.getHeader === \"function\") {\n            this.header = await this.featureSource.getHeader()\n        }\n        return this.header\n    }\n\n    // TODO: refactor to igvUtils.js\n    getScaleFactor(min, max, height, logScale) {\n        const scale = logScale ? height / (Math.log10(max + 1) - (min <= 0 ? 0 : Math.log10(min + 1))) : height / (max - min)\n        return scale\n    }\n\n    computeYPixelValue(yValue, yScaleFactor) {\n        return (this.flipAxis ? (yValue - this.dataRange.min) : (this.dataRange.max - yValue)) * yScaleFactor\n    }\n\n    computeYPixelValueInLogScale(yValue, yScaleFactor) {\n        let maxValue = this.dataRange.max\n        let minValue = this.dataRange.min\n        if (maxValue <= 0) return 0 // TODO:\n        if (minValue <= -1) minValue = 0\n        minValue = (minValue <= 0) ? 0 : Math.log10(minValue + 1)\n        maxValue = Math.log10(maxValue + 1)\n        yValue = Math.log10(yValue + 1)\n        return ((this.flipAxis ? (yValue - minValue) : (maxValue - yValue)) * yScaleFactor)\n    }\n\n    draw(options) {\n\n        const features = options.features\n        const ctx = options.context\n        const bpPerPixel = options.bpPerPixel\n        const bpStart = options.bpStart\n        const pixelWidth = options.pixelWidth\n        const pixelHeight = options.pixelHeight\n        const bpEnd = bpStart + pixelWidth * bpPerPixel + 1\n        const posColor = this.color || DEFAULT_COLOR\n\n        let baselineColor\n        if (typeof posColor === \"string\" && posColor.startsWith(\"rgb(\")) {\n            baselineColor = IGVColor.addAlpha(posColor, 0.1)\n        }\n        let lastNegValue = 1\n        const scaleFactor = this.getScaleFactor(this.dataRange.min, this.dataRange.max, options.pixelHeight, this.logScale)\n        const yScale = (yValue) => this.logScale\n            ? this.computeYPixelValueInLogScale(yValue, scaleFactor)\n            : this.computeYPixelValue(yValue, scaleFactor)\n\n        if (features && features.length > 0) {\n\n            if (this.dataRange.min === undefined) this.dataRange.min = 0\n\n            // Max can be less than min if config.min is set but max left to autoscale.   If that's the case there is\n            // nothing to paint.\n            if (this.dataRange.max > this.dataRange.min) {\n\n                let lastPixelEnd = -1\n                let lastY\n                const y0 = yScale(0)\n                for (let f of features) {\n\n                    if (f.end < bpStart) continue\n                    if (f.start > bpEnd) break\n\n                    const x = Math.floor((f.start - bpStart) / bpPerPixel)\n                    if (isNaN(x)) continue\n\n                    let y = yScale(f.value)\n\n                    const rectEnd = Math.ceil((f.end - bpStart) / bpPerPixel)\n                    const width = Math.max(1, rectEnd - x)\n\n                    const color = this.getColorForFeature(f)\n\n                    if (this.graphType === \"points\") {\n                        const pointSize = this.config.pointSize || 3\n                        const px = x + width / 2\n                        IGVGraphics.fillCircle(ctx, px, y, pointSize / 2, {\"fillStyle\": color, \"strokeStyle\": color})\n\n                    } else if (this.graphType === \"line\") {\n                        if (lastY != undefined) {\n                            IGVGraphics.strokeLine(ctx, lastPixelEnd, lastY, x, y, {\n                                \"fillStyle\": color,\n                                \"strokeStyle\": color\n                            })\n                        }\n                        IGVGraphics.strokeLine(ctx, x, y, x + width, y, {\"fillStyle\": color, \"strokeStyle\": color})\n                    } else {\n                        const height = y - y0\n                        IGVGraphics.fillRect(ctx, x, y0, width, height, {fillStyle: color})\n\n                    }\n                    lastPixelEnd = x + width\n                    lastY = y\n                }\n\n                // If the track includes negative values draw a baseline\n                if (this.dataRange.min < 0) {\n                    const basepx = (this.dataRange.max / (this.dataRange.max - this.dataRange.min)) * options.pixelHeight\n                    IGVGraphics.strokeLine(ctx, 0, basepx, options.pixelWidth, basepx, {strokeStyle: baselineColor})\n                }\n            }\n        }\n\n        // Draw guidelines\n        if (this.config.hasOwnProperty('guideLines')) {\n            for (let line of this.config.guideLines) {\n                if (line.hasOwnProperty('color') && line.hasOwnProperty('y') && line.hasOwnProperty('dotted')) {\n                    let y = yScale(line.y)\n                    let props = {\n                        'strokeStyle': line['color'],\n                        'strokeWidth': 2\n                    }\n                    if (line['dotted']) IGVGraphics.dashedLine(options.context, 0, y, options.pixelWidth, y, 5, props)\n                    else IGVGraphics.strokeLine(options.context, 0, y, options.pixelWidth, y, props)\n                }\n            }\n        }\n    }\n\n    popupData(clickState, features) {\n\n        if (features === undefined) features = this.clickedFeatures(clickState)\n\n        if (features && features.length > 0) {\n\n            const genomicLocation = clickState.genomicLocation\n            const popupData = []\n\n            // Sort features based on distance from click\n            features.sort(function (a, b) {\n                const distA = Math.abs((a.start + a.end) / 2 - genomicLocation)\n                const distB = Math.abs((b.start + b.end) / 2 - genomicLocation)\n                return distA - distB\n            })\n\n            // Display closest 10\n            const displayFeatures = features.length > 10 ? features.slice(0, 10) : features\n\n            // Resort in ascending order\n            displayFeatures.sort(function (a, b) {\n                return a.start - b.start\n            })\n\n            for (let selectedFeature of displayFeatures) {\n                if (selectedFeature) {\n                    if (popupData.length > 0) {\n                        popupData.push('<hr/>')\n                    }\n                    let posString = (selectedFeature.end - selectedFeature.start) === 1 ?\n                        StringUtils.numberFormatter(selectedFeature.start + 1)\n                        : StringUtils.numberFormatter(selectedFeature.start + 1) + \"-\" + StringUtils.numberFormatter(selectedFeature.end)\n                    popupData.push({name: \"Position:\", value: posString})\n                    popupData.push({\n                        name: \"Value:&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;\",\n                        value: StringUtils.numberFormatter(selectedFeature.value)\n                    })\n                }\n            }\n            if (displayFeatures.length < features.length) {\n                popupData.push(\"<hr/>...\")\n            }\n\n            return popupData\n\n        } else {\n            return []\n        }\n    }\n\n    get supportsWholeGenome() {\n        return !this.config.indexURL && this.config.supportsWholeGenome !== false\n    }\n\n    /**\n     * Return color for feature.\n     * @param feature\n     * @returns {string}\n     */\n\n    getColorForFeature(f) {\n        let c = (f.value < 0 && this.altColor) ? this.altColor : this.color || DEFAULT_COLOR\n        return (typeof c === \"function\") ? c(f.value) : c\n    }\n\n    /**\n     * Called when the track is removed.  Do any needed cleanup here\n     */\n    dispose() {\n        this.trackView = undefined\n    }\n\n}\n\n\nexport default WigTrack\n","/**\n *\n * @param cs - object containing\n * 1) array of threshold values defining bin boundaries in ascending order\n * 2) array of colors for bins  (length == thresholds.length + 1)\n * @constructor\n */\nfunction BinnedColorScale(cs) {\n    this.thresholds = cs.thresholds\n    this.colors = cs.colors\n}\n\nBinnedColorScale.prototype.getColor = function (value) {\n\n    for (let threshold of this.thresholds) {\n        if (value < threshold) {\n            return this.colors[this.thresholds.indexOf(threshold)]\n        }\n    }\n\n    return this.colors[this.colors.length - 1]\n\n}\n\n/**\n *\n * @param scale - object with the following properties\n *           low\n *           lowR\n *           lowG\n *           lowB\n *           high\n *           highR\n *           highG\n *           highB\n *\n * @constructor\n */\nfunction GradientColorScale(scale) {\n\n    this.scale = scale\n    this.lowColor = \"rgb(\" + scale.lowR + \",\" + scale.lowG + \",\" + scale.lowB + \")\"\n    this.highColor = \"rgb(\" + scale.highR + \",\" + scale.highG + \",\" + scale.highB + \")\"\n    this.diff = scale.high - scale.low\n\n}\n\nGradientColorScale.prototype.getColor = function (value) {\n\n    var scale = this.scale, r, g, b, frac\n\n    if (value <= scale.low) return this.lowColor\n    else if (value >= scale.high) return this.highColor\n\n    frac = (value - scale.low) / this.diff\n    r = Math.floor(scale.lowR + frac * (scale.highR - scale.lowR))\n    g = Math.floor(scale.lowG + frac * (scale.highG - scale.lowG))\n    b = Math.floor(scale.lowB + frac * (scale.highB - scale.lowB))\n\n    return \"rgb(\" + r + \",\" + g + \",\" + b + \")\"\n}\n\nclass ConstantColorScale {\n    constructor(color) {\n        this.color = color\n    }\n\n    getColor() {\n        return this.color\n    }\n}\n\n\nexport {BinnedColorScale, GradientColorScale, ConstantColorScale}\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport FeatureSource from './featureSource.js'\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport {IGVMath} from \"../../node_modules/igv-utils/src/index.js\"\nimport {createCheckbox} from \"../igv-icons.js\"\nimport {GradientColorScale} from \"../util/colorScale.js\"\nimport {ColorTable} from \"../util/colorPalletes.js\"\n\nclass SegTrack extends TrackBase {\n\n    constructor(config, browser) {\n        super(config, browser)\n    }\n\n    init(config) {\n        super.init(config)\n\n        this.type = config.type || \"seg\"\n        if (this.type === 'maf') this.type = 'mut'\n        this.isLog = config.isLog\n        this.displayMode = config.displayMode || \"EXPANDED\" // EXPANDED | SQUISHED\n        this.height = config.height || 300\n        this.maxHeight = config.maxHeight || 500\n        this.squishedRowHeight = config.sampleSquishHeight || config.squishedRowHeight || 2\n        this.expandedRowHeight = config.sampleExpandHeight || config.expandedRowHeight || 13\n        this.sampleHeight = this.squishedRowHeight      // Initial value, will get overwritten when rendered\n\n        if (config.color) {\n            this.color = config.color\n        } else {\n            // Color scales for \"seg\" (copy number) tracks.\n            this.posColorScale = config.posColorScale ||\n                new GradientColorScale({\n                    low: 0.1,\n                    lowR: 255,\n                    lowG: 255,\n                    lowB: 255,\n                    high: 1.5,\n                    highR: 255,\n                    highG: 0,\n                    highB: 0\n                })\n            this.negColorScale = config.negColorScale ||\n                new GradientColorScale({\n                    low: -1.5,\n                    lowR: 0,\n                    lowG: 0,\n                    lowB: 255,\n                    high: -0.1,\n                    highR: 255,\n                    highG: 255,\n                    highB: 255\n                })\n\n            // Default color table for mutation (mut and maf) tracks\n            if (this.type === \"mut\") {\n                this.colorTable = new ColorTable(config.colorTable || MUT_COLORS)\n            }\n        }\n\n        this.sampleKeys = []\n        this.sampleNames = new Map()\n        if (config.samples) {\n            // Explicit setting, keys == names\n            for (let s of config.samples) {\n                this.sampleKeys.push(s)\n                this.sampleNames.set(s, s)\n            }\n            this.explicitSamples = true\n        }\n\n        //   this.featureSource = config.sourceType === \"bigquery\" ?\n        //       new igv.BigQueryFeatureSource(this.config) :\n\n        // Disable whole genome downsampling unless explicitly.\n        const configCopy = Object.assign({}, this.config);\n        configCopy.maxWGCount = configCopy.maxWGCount || Number.MAX_SAFE_INTEGER;\n        this.featureSource = FeatureSource(configCopy, this.browser.genome)\n\n        this.initialSort = config.sort\n    }\n\n    async postInit() {\n        if (typeof this.featureSource.getHeader === \"function\") {\n            this.header = await this.featureSource.getHeader()\n            if(this.disposed) return;   // This track was removed during async load\n        }\n        // Set properties from track line\n        if (this.header) {\n            this.setTrackProperties(this.header)\n        }\n    }\n\n\n    menuItemList() {\n\n        const menuItems = []\n        const lut =\n            {\n                \"SQUISHED\": \"Squish\",\n                \"EXPANDED\": \"Expand\",\n                \"FILL\": \"Fill\"\n            }\n\n        menuItems.push('<hr/>')\n        menuItems.push(\"DisplayMode:\")\n\n        const displayOptions = this.type === 'seg' ? [\"SQUISHED\", \"EXPANDED\", \"FILL\"] : [\"SQUISHED\", \"EXPANDED\"]\n\n        for (let displayMode of displayOptions) {\n\n            const checkBox = createCheckbox(lut[displayMode], displayMode === this.displayMode)\n            menuItems.push(\n                {\n                    object: $(checkBox),\n                    click: () => {\n                        this.displayMode = displayMode\n                        this.config.displayMode = displayMode\n                        this.trackView.checkContentHeight()\n                        this.trackView.repaintViews()\n                        this.trackView.moveScroller(this.trackView.sampleNameViewport.trackScrollDelta)\n                    }\n                })\n        }\n\n        return menuItems\n\n    }\n\n    hasSamples() {\n        return true   // SEG, MUT, and MAF tracks have samples by definition\n    }\n\n    getSamples() {\n        return {\n            names: this.sampleKeys.map(key => this.sampleNames.get(key)),\n            height: this.sampleHeight,\n            yOffset: 0\n        }\n    }\n\n    async getFeatures(chr, start, end) {\n        const features = await this.featureSource.getFeatures({chr, start, end})\n        if (this.initialSort) {\n            const sort = this.initialSort\n            this.sortSamples(sort.chr, sort.start, sort.end, sort.direction, features)\n            this.initialSort = undefined  // Sample order is sorted,\n        }\n        return features\n    }\n\n\n    draw({context, renderSVG, pixelTop, pixelWidth, pixelHeight, features, bpPerPixel, bpStart}) {\n\n        IGVGraphics.fillRect(context, 0, pixelTop, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n\n        if (features && features.length > 0) {\n\n            this.checkForLog(features)\n\n            // New segments could conceivably add new samples\n            this.updateSampleKeys(features)\n\n            // Create a map for fast id -> row lookup\n            const samples = {}\n            this.sampleKeys.forEach(function (id, index) {\n                samples[id] = index\n            })\n\n            let border\n            switch (this.displayMode) {\n                case \"FILL\":\n                    this.sampleHeight = pixelHeight / this.sampleKeys.length\n                    border = 0\n                    break\n\n                case \"SQUISHED\":\n                    this.sampleHeight = this.squishedRowHeight\n                    border = 0\n                    break\n                default:   // EXPANDED\n                    this.sampleHeight = this.expandedRowHeight\n                    border = 1\n            }\n            const rowHeight = this.sampleHeight\n\n\n            // this.featureMap = new Map()\n\n            for (let segment of features) {\n                segment.pixelRect = undefined   // !important, reset this in case segment is not drawn\n            }\n\n            const pixelBottom = pixelTop + pixelHeight\n            const bpEnd = bpStart + pixelWidth * bpPerPixel + 1\n            const xScale = bpPerPixel\n\n            this.sampleYStart = undefined\n            for (let f of features) {\n\n                if (f.end < bpStart) continue\n                if (f.start > bpEnd) break\n\n                const sampleKey = f.sampleKey || f.sample\n                f.row = samples[sampleKey]\n                const y = f.row * rowHeight + border\n\n                if (undefined === this.sampleYStart) {\n                    this.sampleYStart = y\n                }\n\n                const bottom = y + rowHeight\n\n                if (bottom < pixelTop || y > pixelBottom) {\n                    continue\n                }\n\n                const segmentStart = Math.max(f.start, bpStart)\n                // const segmentStart = segment.start;\n                let x = Math.round((segmentStart - bpStart) / xScale)\n\n                const segmentEnd = Math.min(f.end, bpEnd)\n                // const segmentEnd = segment.end;\n                const x1 = Math.round((segmentEnd - bpStart) / xScale)\n                let w = Math.max(1, x1 - x)\n\n                let color\n                if (this.color) {\n                    if (typeof this.color === \"function\") {\n                        color = this.color(f)\n                    } else {\n                        color = this.color\n                    }\n                } else if (this.colorTable) {\n                    color = this.colorTable.getColor(f.value.toLowerCase())\n                }\n\n                let h\n                if (\"mut\" === this.type) {\n                    h = rowHeight - 2 * border\n                    if (w < 3) {\n                        w = 3\n                        x -= 1\n                    }\n                } else {\n                    // Assume seg track\n                    let value = f.value\n                    if (!this.isLog) {\n                        value = IGVMath.log2(value / 2)\n                    }\n                    if (value < -0.1) {\n                        color = this.negColorScale.getColor(value)\n                    } else if (value > 0.1) {\n                        color = this.posColorScale.getColor(value)\n                    } else {\n                        color = \"white\"\n                    }\n\n                    let sh = rowHeight\n                    if (rowHeight < 0.25) {\n                        const f = 0.1 + 2 * Math.abs(value)\n                        sh = Math.min(1, f * rowHeight)\n                    }\n                    h = sh - 2 * border\n                }\n\n\n                f.pixelRect = {x, y, w, h}\n\n                // Use for diagnostic rendering\n                // context.fillStyle = randomRGB(180, 240)\n                // context.fillStyle = randomGrey(200, 255)\n                context.fillStyle = color\n                context.fillRect(x, y, w, h)\n            }\n\n        } else {\n            //console.log(\"No feature list\");\n        }\n\n    }\n\n\n    checkForLog(features) {\n        if (this.isLog === undefined) {\n            this.isLog = false\n            for (let feature of features) {\n                if (feature.value < 0) {\n                    this.isLog = true\n                    return\n                }\n            }\n        }\n    }\n\n    /**\n     * Optional method to compute pixel height to accomodate the list of features.  The implementation below\n     * has side effects (modifiying the samples hash).  This is unfortunate, but harmless.\n     *\n     * Note displayMode \"FILL\" is handled by the viewport\n     *\n     * @param features\n     * @returns {number}\n     */\n    computePixelHeight(features) {\n        if (!features) return 0\n        const sampleHeight = (\"SQUISHED\" === this.displayMode) ? this.squishedRowHeight : this.expandedRowHeight\n        this.updateSampleKeys(features)\n        return this.sampleKeys.length * sampleHeight\n    }\n\n    /**\n     * Sort samples by the average value over the genomic range in the direction indicated (1 = ascending, -1 descending)\n     */\n    async sortSamples(chr, start, end, direction, featureList) {\n\n        if (!featureList) {\n            featureList = await this.featureSource.getFeatures({chr, start, end})\n        }\n        if (!featureList) return\n\n        this.updateSampleKeys(featureList)\n\n        const scores = {}\n        const d2 = (direction === \"ASC\" ? 1 : -1)\n\n        const sortSeg = () => {\n            // Compute weighted average score for each sample\n            const bpLength = end - start + 1\n            for (let segment of featureList) {\n                if (segment.end < start) continue\n                if (segment.start > end) break\n                const min = Math.max(start, segment.start)\n                const max = Math.min(end, segment.end)\n                const f = (max - min) / bpLength\n                const sampleKey = segment.sampleKey || segment.sample\n                const s = scores[sampleKey] || 0\n                scores[sampleKey] = s + f * segment.value\n            }\n\n            // Now sort sample names by score\n            this.sampleKeys.sort(function (a, b) {\n                let s1 = scores[a]\n                let s2 = scores[b]\n                if (!s1) s1 = d2 * Number.MAX_VALUE\n                if (!s2) s2 = d2 * Number.MAX_VALUE\n                if (s1 === s2) return 0\n                else if (s1 > s2) return d2\n                else return d2 * -1\n            })\n        }\n\n        const sortMut = () => {\n            // Compute weighted average score for each sample\n            for (let segment of featureList) {\n                if (segment.end < start) continue\n                if (segment.start > end) break\n                const sampleKey = segment.sampleKey || segment.sample\n                if (!scores.hasOwnProperty(sampleKey) || segment.value.localeCompare(scores[sampleKey]) > 0) {\n                    scores[sampleKey] = segment.value\n                }\n            }\n            // Now sort sample names by score\n            this.sampleKeys.sort(function (a, b) {\n                let sa = scores[a] || \"\"\n                let sb = scores[b] || \"\"\n                return d2 * (sa.localeCompare(sb))\n            })\n        }\n\n        if (\"mut\" === this.type) {\n            sortMut()\n        } else {\n            sortSeg()\n        }\n\n        this.trackView.repaintViews()\n\n    }\n\n    clickedFeatures(clickState) {\n\n        const allFeatures = super.clickedFeatures(clickState)\n        const y = clickState.y\n        return allFeatures.filter(function (feature) {\n            const rect = feature.pixelRect\n            return rect && y >= rect.y && y <= (rect.y + rect.h)\n        })\n\n    }\n\n    hoverText(clickState) {\n        const features = this.clickedFeatures(clickState)\n        if(features && features.length > 0) {\n            return `${features[0].sample}: ${features[0].value}`\n        }\n    }\n\n    popupData(clickState, featureList) {\n\n        if(featureList === undefined) featureList = this.clickedFeatures(clickState)\n\n        const items = []\n\n        for (let feature of featureList) {\n\n            // Double line divider between features\n            if (items.length > 0) {\n                items.push('<hr/>')\n                items.push('<hr/>')\n            }\n\n            // hack for whole genome features, which save the original feature as \"_f\"\n            const f = feature._f || feature\n\n            const data = (typeof f.popupData === 'function') ?\n                f.popupData(this.type, this.browser.genome.id) :\n                this.extractPopupData(f)\n            Array.prototype.push.apply(items, data)\n\n        }\n\n        return items\n    }\n\n    contextMenuItemList(clickState) {\n\n        const referenceFrame = clickState.viewport.referenceFrame\n        const genomicLocation = clickState.genomicLocation\n\n        // Define a region 5 \"pixels\" wide in genomic coordinates\n        const sortDirection = this.config.sort ?\n            (this.config.sort.direction === \"ASC\" ? \"DESC\" : \"ASC\") :      // Toggle from previous sort\n            \"DESC\"\n        const bpWidth = referenceFrame.toBP(2.5)\n\n        const sortHandler = (sort) => {\n            const viewport = clickState.viewport\n            const features = viewport.cachedFeatures\n            this.sortSamples(sort.chr, sort.start, sort.end, sort.direction, features)\n        }\n\n        const sortLabel = this.type === 'seg' ? 'Sort by value' : 'Sort by type'\n\n        return [\n            {\n                label: sortLabel, click: (e) => {\n\n\n                    const sort = {\n                        direction: sortDirection,\n                        chr: clickState.viewport.referenceFrame.chr,\n                        start: genomicLocation - bpWidth,\n                        end: genomicLocation + bpWidth\n\n                    }\n\n                    sortHandler(sort)\n\n                    this.config.sort = sort\n\n                }\n            }]\n\n    }\n\n    get supportsWholeGenome() {\n        return (this.config.indexed === false || !this.config.indexURL) && this.config.supportsWholeGenome !== false\n    }\n\n    updateSampleKeys(featureList) {\n\n        if (this.explicitSamples) return\n\n        for (let feature of featureList) {\n            const sampleKey = feature.sampleKey || feature.sample\n            if (!this.sampleNames.has(sampleKey)) {\n                this.sampleNames.set(sampleKey, feature.sample)\n                this.sampleKeys.push(sampleKey)\n            }\n        }\n    }\n}\n\n// Mut and MAF file default color table\n\nconst MUT_COLORS = {\n\n    \"indel\": \"rgb(0,200,0)\",\n    \"targeted region\": \"rgb(236,155,43)\",\n    \"truncating\": \"rgb(\t150,0,0)\",\n    \"non-coding transcript\": \"rgb(0,0,150)\",\n\n    // Colors from https://www.nature.com/articles/nature11404\n    \"synonymous\": \"rgb(109,165,95)\",\n    \"silent\": \"rgb(109,135,80)\",\n    \"missense_mutation\": \"rgb(72,130,187)\",\n    \"missense\": \"rgb(72,130,187)\",\n    \"splice site\": \"rgb(143,83,155)\",\n    \"splice_region\": \"rgb(143,83,155)\",\n    \"nonsense\": \"rgb(216, 57,81)\",\n    \"nonsense_mutation\": \"rgb(216, 57,81)\",\n    \"frame_shift_del\": \"rgb(226,135,65)\",\n    \"frame_shift_ins\": \"rgb(226,135,65)\",\n    \"in_frame_del\": \"rgb(247,235,94)\",\n    \"in_frame_ins\": \"rgb(247,235,94)\",\n    \"*other*\": \"rgb(159,91,50)\"\n    //\n    // 3'Flank\n    // 3'UTR\n    // 5'Flank\n    // 5'UTR\n    // Frame_Shift_Del\n    // Frame_Shift_Ins\n    // IGR\n    // In_Frame_Del\n    // In_Frame_Ins\n    // Intron\n    // Missense_Mutation\n    // Nonsense_Mutation\n    // Nonstop_Mutation\n    // RNA\n    // Silent\n    // Splice_Region\n    // Splice_Site\n    // Translation_Start_Site\n    // Variant_Classification\n\n}\n\nexport default SegTrack\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport TrackBase from \"../trackBase.js\"\nimport paintAxis from \"../util/paintAxis.js\"\nimport MenuUtils from \"../ui/menuUtils.js\"\nimport {FeatureUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\n\n/**\n * Represents 2 or more wig tracks overlaid on a common viewport.\n */\nclass MergedTrack extends TrackBase {\n\n    constructor(config, browser) {\n        super(config, browser)\n        this.type = \"merged\"\n        this.featureType = 'numeric'\n        this.paintAxis = paintAxis\n        this.graphType = config.graphType\n    }\n\n    init(config) {\n        if (!config.tracks) {\n            throw Error(\"Error: no tracks defined for merged track\" + config)\n        }\n\n        super.init(config)\n    }\n\n    async postInit() {\n\n        this.tracks = []\n        const p = []\n        for (let tconf of this.config.tracks) {\n            tconf.isMergedTrack = true\n            const t = await this.browser.createTrack(tconf)\n            if (t) {\n                t.autoscale = false     // Scaling done from merged track\n                this.tracks.push(t)\n            } else {\n                console.warn(\"Could not create track \" + tconf)\n            }\n\n            if (typeof t.postInit === 'function') {\n                p.push(t.postInit())\n            }\n        }\n\n        this.flipAxis = this.config.flipAxis ? this.config.flipAxis : false\n        this.logScale = this.config.logScale ? this.config.logScale : false\n        this.autoscale = this.config.autoscale || this.config.max === undefined\n        if (!this.autoscale) {\n            this.dataRange = {\n                min: this.config.min || 0,\n                max: this.config.max\n            }\n        }\n        for (let t of this.tracks) {\n            t.autoscale = false\n            t.dataRange = this.dataRange\n        }\n\n        this.height = this.config.height || 50\n\n        return Promise.all(p)\n    }\n\n    get height() {\n        return this._height\n    }\n\n    set height(h) {\n        this._height = h\n        if (this.tracks) {\n            for (let t of this.tracks) {\n                t.height = h\n                t.config.height = h\n            }\n        }\n    }\n\n    menuItemList() {\n        let items = []\n        if (this.flipAxis !== undefined) {\n            items.push({\n                label: \"Flip y-axis\",\n                click: () => {\n                    this.flipAxis = !this.flipAxis\n                    this.trackView.repaintViews()\n                }\n            })\n        }\n\n        items = items.concat(MenuUtils.numericDataMenuItems(this.trackView))\n\n        return items\n    }\n\n    /**\n     * Returns a MergedFeatureCollection containing an array of features for the specified range, 1 for each track.\n     */\n    async getFeatures(chr, bpStart, bpEnd, bpPerPixel) {\n\n        const promises = this.tracks.map((t) => t.getFeatures(chr, bpStart, bpEnd, bpPerPixel))\n        const featureArrays = await Promise.all(promises)\n        return new MergedFeatureCollection(featureArrays)\n    }\n\n    draw(options) {\n\n        const mergedFeatures = options.features    // A MergedFeatureCollection\n\n        for (let i = 0, len = this.tracks.length; i < len; i++) {\n            const trackOptions = Object.assign({}, options)\n            trackOptions.features = mergedFeatures.featureArrays[i]\n            this.tracks[i].dataRange = this.dataRange\n            this.tracks[i].flipAxis = this.flipAxis\n            this.tracks[i].logScale = this.logScale\n            if (this.graphType) {\n                this.tracks[i].graphType = this.graphType\n            }\n            this.tracks[i].draw(trackOptions)\n        }\n    }\n\n    popupData(clickState) {\n\n        if(clickState.viewport && clickState.viewport.cachedFeatures) {\n\n            const featuresArray = clickState.viewport.cachedFeatures.featureArrays\n\n            if (featuresArray && featuresArray.length === this.tracks.length) {\n                // Array of feature arrays, 1 for each track\n                const popupData = []\n                for (let i = 0; i < this.tracks.length; i++) {\n                    if (i > 0) popupData.push('<hr/>')\n                    popupData.push(`<div style=background-color:rgb(245,245,245);border-bottom-style:dashed;border-bottom-width:1px;padding-bottom:5px;padding-top:10px;font-weight:bold;font-size:larger >${this.tracks[i].name}</div>`)\n                    const trackPopupData = this.tracks[i].popupData(clickState, featuresArray[i])\n                    popupData.push(...trackPopupData)\n\n                }\n                return popupData\n            }\n        }\n    }\n\n    clickedFeatures(clickState) {\n\n\n        // We use the cached features rather than method to avoid async load.  If the\n        // feature is not already loaded this won't work,  but the user wouldn't be mousing over it either.\n        const mergedFeaturesCollection = clickState.viewport.cachedFeatures\n\n        if(!mergedFeaturesCollection) {\n            return [];\n        }\n\n        const genomicLocation = clickState.genomicLocation\n        const clickedFeatures = [];\n        for(let features of mergedFeaturesCollection.featureArrays) {\n            // When zoomed out we need some tolerance around genomicLocation\n            const tolerance = (clickState.referenceFrame.bpPerPixel > 0.2) ? 3 * clickState.referenceFrame.bpPerPixel : 0.2\n            const ss = genomicLocation - tolerance\n            const ee = genomicLocation + tolerance\n            const tmp = (FeatureUtils.findOverlapping(features, ss, ee))\n            for(let f of tmp) {\n                clickedFeatures.push(f)\n            }\n        }\n        return clickedFeatures;\n    }\n\n\n    get supportsWholeGenome() {\n        return this.tracks.every(track => track.supportsWholeGenome)\n    }\n}\n\n\nclass MergedFeatureCollection {\n\n    constructor(featureArrays) {\n        this.featureArrays = featureArrays\n    }\n\n    getMax(start, end) {\n        let max = -Number.MAX_VALUE\n        for (let a of this.featureArrays) {\n            for (let f of a) {\n                if (typeof f.value !== 'undefined' && !Number.isNaN(f.value)) {\n                    if (f.end < start) {\n                        continue\n                    }\n                    if (f.start > end) {\n                        break\n                    }\n                    max = Math.max(max, f.value)\n                }\n            }\n        }\n        return max\n    }\n\n}\n\nexport default MergedTrack\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2018 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport paintAxis from \"../util/paintAxis.js\"\nimport {IGVColor, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\nimport MenuUtils from \"../ui/menuUtils.js\"\nimport {createCheckbox} from \"../igv-icons.js\"\nimport {scoreShade} from \"../util/ucscUtils.js\"\nimport FeatureSource from \"./featureSource.js\"\nimport {makeBedPEChords, sendChords} from \"../jbrowse/circularViewUtils.js\"\nimport {getChrColor} from \"../bam/bamTrack.js\"\n\nfunction getArcType(config) {\n    if (!config.arcType) {\n        return \"nested\"\n    }\n    switch (config.arcType) {\n        case \"chiapet\":\n            return \"inView\"\n        case \"chiapetoutbound\":\n            return \"partialInView\"\n        default:\n            return config.arcType\n    }\n}\n\nconst DEFAULT_ARC_COLOR = \"rgb(180,25,137)\"\n\nclass InteractionTrack extends TrackBase {\n\n    static defaults = {\n        height: 250,\n        theta: Math.PI / 4,\n        arcOrientation: true,\n        showBlocks: true,\n        blockHeight: 3,\n        thickness: 1,\n        alpha: 0.02,\n        logScale: true,\n    }\n\n    constructor(config, browser) {\n        super(config, browser)\n    }\n\n    init(config) {\n\n        super.init(config)\n\n        this.sinTheta = Math.sin(this.theta)\n        this.cosTheta = Math.cos(this.theta)\n        this.arcType = getArcType(config)   // nested | proportional | inView | partialInView\n        this.alpha = config.alpha || 0.02  // was: 0.15\n        this.painter = {flipAxis: !this.arcOrientation, dataRange: this.dataRange, paintAxis: paintAxis}\n\n        if (config.valueColumn) {\n            this.valueColumn = config.valueColumn\n            this.hasValue = true\n        } else if (config.useScore) {\n            this.hasValue = true\n            this.valueColumn = \"score\"\n        }\n\n        if (config.max) {\n            this.dataRange = {\n                min: config.min || 0,\n                max: config.max\n            }\n            this.autoscale = false\n        } else {\n            this.autoscale = true\n        }\n\n        // Create the FeatureSource and override the default whole genome method\n        if (config.featureSource) {\n            this.featureSource = config.featureSource\n            delete config._featureSource\n        } else {\n            this.featureSource = FeatureSource(config, this.browser.genome)\n            this.featureSource.getWGFeatures = getWGFeatures\n        }\n    }\n\n    async postInit() {\n\n        if (typeof this.featureSource.getHeader === \"function\") {\n            this.header = await this.featureSource.getHeader()\n            if (this.disposed) return;   // This track was removed during async load\n        }\n\n        // Set properties from track line\n        if (this.header) {\n            this.setTrackProperties(this.header)\n        }\n\n        if (this.visibilityWindow === undefined && typeof this.featureSource.defaultVisibilityWindow === 'function') {\n            this.visibilityWindow = await this.featureSource.defaultVisibilityWindow()\n            this.featureSource.visibilityWindow = this.visibilityWindow  // <- this looks odd\n        }\n\n        return this\n    }\n\n    get supportsWholeGenome() {\n        return true\n    }\n\n    async getFeatures(chr, start, end) {\n        const visibilityWindow = this.visibilityWindow\n        const features = await this.featureSource.getFeatures({chr, start, end, visibilityWindow})\n\n        // Check for score or value\n        if (this.hasValue === undefined && features && features.length > 0) {\n            this.hasValue = features[0].score !== undefined\n        }\n\n        return features\n    }\n\n    draw(options) {\n\n        if (this.arcType === \"proportional\") {\n            this.drawProportional(options)\n        } else if (this.arcType === \"inView\" || this.arcType === \"partialInView\") {\n            this.drawProportional(options)\n        } else {\n            this.drawNested(options)\n        }\n    }\n\n    drawNested(options) {\n\n        const ctx = options.context\n        const pixelWidth = options.pixelWidth\n        const pixelHeight = options.pixelHeight\n        const viewportWidth = options.viewportWidth\n        const bpPerPixel = options.bpPerPixel\n        const bpStart = options.bpStart\n        const xScale = bpPerPixel\n\n        IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n\n        const featureList = options.features\n\n        if (featureList) {\n\n            // Autoscale theta\n            autoscaleNested.call(this)\n            const y = this.arcOrientation ? options.pixelHeight : 0\n            const direction = this.arcOrientation\n\n            ctx.font = \"8px sans-serif\"\n            ctx.textAlign = \"center\"\n\n            for (let feature of featureList) {\n\n                // Reset transient property drawState.  An undefined value => feature has not been drawn.\n                feature.drawState = undefined\n\n                let color\n                if (typeof this.color === 'function') {\n                    color = this.color(feature)\n                } else {\n                    color = this.color || feature.color || DEFAULT_ARC_COLOR\n                    if (color && this.config.useScore) {\n                        color = getAlphaColor(color, scoreShade(feature.score))\n                    }\n                }\n\n                ctx.lineWidth = feature.thickness || this.thickness || 1\n\n                if (feature.chr1 === feature.chr2 || feature.chr === 'all') {\n\n                    const {m1, m2} = getMidpoints(feature, this.browser.genome)\n\n                    let pixelStart = Math.round((m1 - bpStart) / xScale)\n                    let pixelEnd = Math.round((m2 - bpStart) / xScale)\n                    if (pixelEnd < 0 || pixelStart > pixelWidth) continue\n\n                    let w = (pixelEnd - pixelStart)\n                    if (w < 3) {\n                        w = 3\n                        pixelStart--\n                    }\n\n                    const a = w / 2\n                    const r = a / this.sinTheta\n                    const b = this.cosTheta * r\n                    const xc = pixelStart + a\n\n                    let yc, startAngle, endAngle\n                    if (direction) { // UP\n                        yc = this.height + b\n                        startAngle = Math.PI + Math.PI / 2 - this.theta\n                        endAngle = Math.PI + Math.PI / 2 + this.theta\n                    } else { // DOWN\n                        yc = -b\n                        startAngle = Math.PI / 2 - this.theta\n                        endAngle = Math.PI / 2 + this.theta\n                    }\n\n                    if (this.showBlocks && feature.chr !== 'all') {\n                        const s1 = (feature.start1 - bpStart) / xScale\n                        const e1 = (feature.end1 - bpStart) / xScale\n                        const s2 = (feature.start2 - bpStart) / xScale\n                        const e2 = (feature.end2 - bpStart) / xScale\n                        const hb = this.arcOrientation ? -this.blockHeight : this.blockHeight\n                        ctx.fillRect(s1, y, e1 - s1, hb)\n                        ctx.fillRect(s2, y, e2 - s2, hb)\n                    }\n\n                    // Alpha shade (de-emphasize) arcs that extend beyond viewport, unless alpha shading is used for score.\n                    if (color && !this.config.useScore && w > viewportWidth) {\n                        color = getAlphaColor(color, this.alpha)\n                    }\n                    ctx.strokeStyle = color\n                    ctx.fillStyle = color\n                    ctx.beginPath()\n                    ctx.arc(xc, yc, r, startAngle, endAngle, false)\n                    ctx.stroke()\n                    feature.drawState = {xc, yc, r}\n                } else {\n\n                    let pixelStart = Math.round((feature.start - bpStart) / xScale)\n                    let pixelEnd = Math.round((feature.end - bpStart) / xScale)\n                    if (pixelEnd < 0 || pixelStart > pixelWidth) continue\n\n                    let w = (pixelEnd - pixelStart)\n                    if (w < 3) {\n                        w = 3\n                        pixelStart--\n                    }\n                    const otherChr = feature.chr === feature.chr1 ? feature.chr2 : feature.chr1\n                    ctx.strokeStyle = color\n                    // get a sense of trans \"spread\"\n                    ctx.fillStyle = getAlphaColor(getChrColor(otherChr), 0.5)\n                    // ctx.fillStyle = color\n\n                    if (direction) {\n                        // UP\n                        ctx.fillRect(pixelStart, this.height / 2, w, this.height / 2)\n                        ctx.fillText(otherChr, pixelStart + w / 2, this.height / 2 - 5)\n                        feature.drawState = {x: pixelStart, y: this.height / 2, w: w, h: this.height / 2}\n                    } else {\n                        ctx.fillRect(pixelStart, 0, w, this.height / 2)\n                        ctx.fillText(otherChr, pixelStart + w / 2, this.height / 2 + 13)\n                        feature.drawState = {x: pixelStart, y: 0, w: w, h: this.height / 2}\n                    }\n                }\n            }\n        }\n\n        function autoscaleNested() {\n            let max = 0\n            for (let feature of featureList) {\n                let pixelStart = (feature.start - bpStart) / xScale\n                let pixelEnd = (feature.end - bpStart) / xScale\n                if (pixelStart >= 0 && pixelEnd <= pixelWidth) {\n                    max = Math.max(max, pixelEnd - pixelStart)\n                }\n            }\n            let a = Math.min(viewportWidth, max) / 2\n            if (max > 0) {\n                let coa = (pixelHeight - 10) / a\n                this.theta = estimateTheta(coa)\n                this.sinTheta = Math.sin(this.theta)\n                this.cosTheta = Math.cos(this.theta)\n            }\n        }\n    }\n\n    getScaleFactor(min, max, height, logScale) {\n        const scale = logScale ? height / (Math.log10(max + 1) - (min <= 0 ? 0 : Math.log10(min + 1))) : height / (max - min)\n        return scale\n    }\n\n    drawProportional(options) {\n\n        const ctx = options.context\n        const pixelWidth = options.pixelWidth\n        const pixelHeight = options.pixelHeight\n        const bpPerPixel = options.bpPerPixel\n        const bpStart = options.bpStart\n        const xScale = bpPerPixel\n        const refStart = options.referenceFrame.start\n        const refEnd = options.referenceFrame.end\n\n\n        IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n\n        const featureList = options.features\n\n        if (featureList && featureList.length > 0) {\n\n            const arcCaches = new Map() // FIXME: to stop drawing 'visually identical' arcs; more efficient algo exists\n\n            // we use the min as a filter but not moving the axis\n            const effectiveMin = 0\n            const yScale = this.getScaleFactor(effectiveMin, this.dataRange.max, options.pixelHeight - 1, this.logScale)\n            const y = this.arcOrientation ? options.pixelHeight : 0\n\n            for (let feature of featureList) {\n\n                // Reset transient property drawState.  An undefined value => feature has not been drawn.\n                feature.drawState = undefined\n\n                const value = this.valueColumn ? feature[this.valueColumn] : feature.score\n                if (value === undefined || Number.isNaN(value)) continue\n\n                const radiusY = Math.round((this.logScale ? Math.log10(value + 1) : value) * yScale)\n\n                if (feature.chr1 === feature.chr2 || feature.chr === 'all') {\n\n                    const {m1, m2} = getMidpoints(feature, this.browser.genome)\n\n                    let pixelStart = Math.round((m1 - bpStart) / xScale)\n                    let pixelEnd = Math.round((m2 - bpStart) / xScale)\n                    let w = (pixelEnd - pixelStart)\n                    if (w < 3) {\n                        w = 3\n                        pixelStart--\n                    }\n\n                    // Various filters\n                    if (value < this.dataRange.min || value > this.dataRange.max) continue\n                    if (\"proportional\" !== this.arcType) {\n                        const showOutbound = (this.arcType === \"partialInView\")\n                        const within = (m1 >= refStart && m2 <= refEnd)\n                        let outBound = false\n                        let inBound = false\n                        if (!within && showOutbound) {\n                            outBound = (refStart <= m1 && m1 <= refEnd)\n                            if (!outBound) inBound = (refStart <= m2 && m2 <= refEnd)\n                        }\n                        if (!(within || outBound || inBound)) continue\n                    }\n\n\n                    const radiusX = w / 2\n                    const xc = pixelStart + w / 2\n                    feature.drawState = {xc, yc: y, radiusX, radiusY}\n\n                    // const arcKey = ((pixelStart << 16) | pixelEnd)\n                    // let arc = arcCaches.get(arcKey)\n                    // if (arc !== undefined) {\n                    //     if (arc.has(radiusY)) {\n                    //         continue\n                    //     }\n                    //     arc.add(radiusY)\n                    // } else {\n                    //     let arcHeights = new Set()\n                    //     arcHeights.add(radiusY)\n                    //     arcCaches.set(arcKey, arcHeights)\n                    // }\n\n                    const counterClockwise = this.arcOrientation ? true : false\n                    const color = feature.color || this.color\n                    ctx.strokeStyle = color\n                    ctx.lineWidth = feature.thickness || this.thickness || 1\n\n                    if (true === ctx.isSVG) {\n                        ctx.strokeEllipse(xc, y, radiusX, radiusY, 0, 0, Math.PI, counterClockwise)\n                    } else {\n                        ctx.beginPath()\n                        ctx.ellipse(xc, y, radiusX, radiusY, 0, 0, Math.PI, counterClockwise)\n                        ctx.stroke()\n                    }\n\n                    if (this.alpha) {\n                        ctx.fillStyle = getAlphaColor(color, this.alpha)\n                        if (true === ctx.isSVG) {\n                            ctx.fillEllipse(xc, y, radiusX, radiusY, 0, 0, Math.PI, counterClockwise)\n                        } else {\n                            ctx.fill()\n                        }\n                    }\n\n                    if (this.showBlocks && feature.chr !== 'all') {\n                        ctx.fillStyle = color\n                        const s1 = (feature.start1 - bpStart) / xScale\n                        const e1 = (feature.end1 - bpStart) / xScale\n                        const s2 = (feature.start2 - bpStart) / xScale\n                        const e2 = (feature.end2 - bpStart) / xScale\n                        const hb = this.arcOrientation ? -this.blockHeight : this.blockHeight\n                        ctx.fillRect(s1, y, e1 - s1, hb)\n                        ctx.fillRect(s2, y, e2 - s2, hb)\n                    }\n\n                } else {\n                    // Inter chromosome\n                    let pixelStart = Math.round((feature.start - bpStart) / xScale)\n                    let pixelEnd = Math.round((feature.end - bpStart) / xScale)\n                    if (pixelEnd < 0 || pixelStart > pixelWidth || value < this.dataRange.min || value > this.dataRange.max) continue\n\n                    const h = Math.min(radiusY, this.height - 13)   // Leave room for text\n                    let w = (pixelEnd - pixelStart)\n                    if (w < 3) {\n                        w = 3\n                        pixelStart--\n                    }\n                    const otherChr = feature.chr === feature.chr1 ? feature.chr2 : feature.chr1\n                    ctx.font = \"8px sans-serif\"\n                    ctx.textAlign = \"center\"\n                    // get a sense of trans \"spread\"\n                    ctx.fillStyle = getAlphaColor(getChrColor(otherChr), 0.5)\n                    if (this.arcOrientation) {\n                        // UP\n                        const y = this.height - h\n                        ctx.fillRect(pixelStart, y, w, h)\n                        ctx.fillText(otherChr, pixelStart + w / 2, y - 5)\n                        feature.drawState = {x: pixelStart, y, w, h}\n                    } else {\n                        ctx.fillRect(pixelStart, 0, w, h)\n                        ctx.fillText(otherChr, pixelStart + w / 2, h + 13)\n                        feature.drawState = {x: pixelStart, y: 0, w, h}\n                    }\n                }\n            }\n        }\n    }\n\n    clearAxis(ctx, pixelWidth, pixelHeight) {\n        IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n    }\n\n    paintAxis(ctx, pixelWidth, pixelHeight) {\n        // dataRane is interpreted differently for interactino tracks -- all arcs are drawn from \"zero\", irrespective of dataRange.min\n        const axisRange = {min: 0, max: this.dataRange.max}\n        if (this.arcType === \"proportional\") {\n            this.painter.flipAxis = !this.arcOrientation\n            this.painter.dataRange = axisRange\n            this.painter.paintAxis(ctx, pixelWidth, pixelHeight)\n        } else if (this.arcType === \"inView\" || this.arcType === \"partialInView\") {\n            this.painter.flipAxis = !this.arcOrientation\n            this.painter.dataRange = axisRange\n            this.painter.paintAxis(ctx, pixelWidth, pixelHeight)\n        } else {\n            this.clearAxis(ctx, pixelWidth, pixelHeight)\n        }\n    }\n\n    menuItemList() {\n\n        let items = []\n\n        if (this.hasValue) {\n            items.push(\"<hr/>\")\n            const lut =\n                {\n                    \"nested\": \"Nested\",\n                    \"proportional\": \"Proportional - All\",\n                    \"inView\": \"Proportional - Both Ends in View\",\n                    \"partialInView\": \"Proportional - One End in View\"\n                }\n            items.push(\"<b>Arc Type</b>\")\n            for (let arcType of [\"nested\", \"proportional\", \"inView\", \"partialInView\"]) {\n                items.push(\n                    {\n                        object: $(createCheckbox(lut[arcType], arcType === this.arcType)),\n                        click: () => {\n                            this.arcType = arcType\n                            this.trackView.repaintViews()\n                        }\n                    })\n            }\n        }\n        items.push(\"<hr/>\")\n\n        items.push({\n            name: \"Toggle arc direction\",\n            click: () => {\n                this.arcOrientation = !this.arcOrientation\n                this.trackView.repaintViews()\n            }\n        })\n        items.push({\n            name: this.showBlocks ? \"Hide Blocks\" : \"Show Blocks\",\n            click: () => {\n                this.showBlocks = !this.showBlocks\n                this.trackView.repaintViews()\n            }\n        })\n\n\n        if (this.arcType === \"proportional\" || this.arcType === \"inView\" || this.arcType === \"partialInView\") {\n            // MenuUtils.numericDataMenuItems(this.trackView).forEach(item => items.push(item))\n            items = items.concat(MenuUtils.numericDataMenuItems(this.trackView))\n        }\n\n        if (this.browser.circularView) {\n            items.push('<hr/>')\n            items.push({\n                label: 'Add interactions to circular view',\n                click: () => {\n                    for (let viewport of this.trackView.viewports) {\n                        this.addChordsForViewport(viewport.referenceFrame)\n                    }\n                }\n            })\n        }\n\n        return items\n    }\n\n    contextMenuItemList(clickState) {\n\n        // Experimental JBrowse feature\n        if (this.browser.circularView) {\n            const viewport = clickState.viewport\n            const list = []\n\n            list.push({\n                label: 'Add interactions to circular view',\n                click: () => {\n                    const refFrame = viewport.referenceFrame\n                    // first pass: to get all the relevant features\n                    this.addChordsForViewport(refFrame)\n                }\n            })\n\n            list.push('<hr/>')\n            return list\n        }\n    }\n\n    /**\n     * Add chords to the circular view for the given viewport, represented by its reference frame\n     * @param refFrame\n     */\n    addChordsForViewport(refFrame) {\n        const cachedFeatures = \"all\" === refFrame.chr ?\n            this.featureSource.getAllFeatures() :\n            this.featureSource.featureCache.queryFeatures(refFrame.chr, refFrame.start, refFrame.end)\n\n        // inView features are simply features that have been drawn, i.e. have a drawState\n        const inView = cachedFeatures.filter(f => f.drawState)\n        if (inView.length === 0) return;\n\n        const chords = makeBedPEChords(inView)\n        sendChords(chords, this, refFrame, 0.5)\n        //\n        //\n        // // for filtered set, distinguishing the chromosomes is more critical than tracks\n        // const chordSetColor = IGVColor.addAlpha(\"all\" === refFrame.chr ? this.color : getChrColor(refFrame.chr), 0.5)\n        // const trackColor = IGVColor.addAlpha(this.color, 0.5)\n        //\n        // // name the chord set to include locus and filtering information\n        // const encodedName = this.name.replaceAll(' ', '%20')\n        // const chordSetName = \"all\" === refFrame.chr ?\n        //     encodedName :\n        //     `${encodedName} (${refFrame.chr}:${refFrame.start}-${refFrame.end} ; range:${this.dataRange.min}-${this.dataRange.max})`\n        // this.browser.circularView.addChords(chords, {track: chordSetName, color: chordSetColor, trackColor: trackColor})\n    }\n\n    doAutoscale(features) {\n\n        // if (\"proportional\" === this.arcType) {\n        let max = 0\n        if (features) {\n            for (let f of features) {\n                const v = this.valueColumn ? f[this.valueColumn] : f.score\n                if (!Number.isNaN(v)) {\n                    max = Math.max(max, v)\n                }\n            }\n        }\n        return {min: 0, max: max}\n        // }\n    }\n\n    popupData(clickState, features) {\n\n        if (features === undefined) features = this.clickedFeatures(clickState)\n\n        const data = []\n        for (let feature of features) {\n\n            const f = feature._ || feature   // For \"whole genome\" features, which keeps a pointer to the original\n\n            data.push({name: \"Region 1\", value: positionString(f.chr1, f.start1, f.end1, f.strand1)})\n            data.push({name: \"Region 2\", value: positionString(f.chr2, f.start2, f.end2, f.strand2)})\n            if (f.name) {\n                data.push({name: \"Name\", value: f.name})\n            }\n            if (f.value !== undefined) {\n                data.push({name: \"Value\", value: f.value})\n            }\n            if (f.score !== undefined) {\n                data.push({name: \"Score\", value: f.score})\n            }\n\n\n            if (f.extras && this.header && this.header.columnNames) {\n                const columnNames = this.header.columnNames\n                const stdColumns = this.header.hiccups ? 6 : 10\n                for (let i = stdColumns; i < columnNames.length; i++) {\n                    if (this.header.colorColumn === i) continue;\n                    if (columnNames[i] === 'info') {\n                        extractInfoColumn(data, f.extras[i - stdColumns])\n                    } else {\n                        data.push({name: columnNames[i], value: f.extras[i - stdColumns]})\n                    }\n                }\n            }\n            // For now just return the top hit\n            break\n\n            //if (data.length > 0) {\n            //     data.push(\"<HR>\");\n            // }\n        }\n        return data\n    }\n\n    clickedFeatures(clickState) {\n\n        // We use the cached features rather than method to avoid async load.  If the\n        // feature is not already loaded this won't work,  but the user wouldn't be mousing over it either.\n        const featureList = clickState.viewport.cachedFeatures\n        const candidates = []\n        if (featureList) {\n            const proportional = (this.arcType === \"proportional\" || this.arcType === \"inView\" || this.arcType === \"partialInView\")\n\n            for (let feature of featureList) {\n\n                if (!feature.drawState) continue\n\n                if (feature.chr1 === feature.chr2 || feature.chr === 'all') {\n                    if (proportional) {\n                        //(x-xc)^2/radiusX^2 + (y-yc)^2/radiusY^2 <= 1\n                        const {xc, yc, radiusX, radiusY} = feature.drawState\n                        const dx = clickState.canvasX - xc\n                        const dy = clickState.canvasY - yc\n                        const score = (dx / radiusX) * (dx / radiusX) + (dy / radiusY) * (dy / radiusY)\n                        if (score <= 1) {\n                            candidates.push({score: 1 / score, feature})\n                        }\n                    } else {\n                        const {xc, yc, r} = feature.drawState\n                        const dx = clickState.canvasX - xc\n                        const dy = clickState.canvasY - yc\n                        const score = Math.abs(Math.sqrt(dx * dx + dy * dy) - r)\n                        if (score < 5) {\n                            candidates.push({score, feature})\n                        }\n                    }\n                } else {\n                    const {x, y, w, h} = feature.drawState\n                    const tolerance = 5\n                    if (clickState.canvasX >= x - tolerance && clickState.canvasX <= x + w + tolerance &&\n                        clickState.canvasY >= y && clickState.canvasY <= y + h) {\n                        const score = -Math.abs(clickState.canvasX - (x + w / 2))\n                        candidates.push({score, feature})\n                        break\n                    }\n                }\n            }\n        }\n\n        if (candidates.length > 1) {\n            candidates.sort((a, b) => a.score - b.score)\n        }\n        return candidates.map((c) => c.feature)\n    }\n}\n\nfunction getMidpoints(feature, genome) {\n    let m1 = (feature.start1 + feature.end1) / 2\n    let m2 = (feature.start2 + feature.end2) / 2\n    if (feature.chr === 'all') {\n        m1 = genome.getGenomeCoordinate(feature.chr1, m1)\n        m2 = genome.getGenomeCoordinate(feature.chr2, m2)\n    }\n    if (m1 > m2) {\n        const tmp = m1\n        m1 = m2\n        m2 = tmp\n    }\n    return {m1, m2}\n}\n\nfunction positionString(chr, start, end, strand) {\n\n    return strand && strand !== '.' ?\n        `${chr}:${StringUtils.numberFormatter(start + 1)}-${StringUtils.numberFormatter(end)} (${strand})` :\n        `${chr}:${StringUtils.numberFormatter(start + 1)}-${StringUtils.numberFormatter(end)}`\n}\n\n/**\n * Estimate theta given the ratio of track height to 1/2 the feature width (coa).  This relationship is approximately linear.\n */\nfunction estimateTheta(x) {\n    let coa = [0.01570925532366355, 0.15838444032453644, 0.3249196962329063, 0.5095254494944288, 0.7265425280053609, 0.9999999999999999]\n    let theta = [0.031415926535897934, 0.3141592653589793, 0.6283185307179586, 0.9424777960769379, 1.2566370614359172, 1.5707963267948966]\n    let idx\n\n    for (idx = 0; idx < coa.length; idx++) {\n        if (coa[idx] > x) {\n            break\n        }\n    }\n\n    let left = idx === 0 ? 0 : coa[idx - 1]\n    let right = idx < coa.length ? coa[idx] : 1\n    let r = (x - left) / (right - left)\n\n    let thetaLeft = idx === 0 ? 0 : theta[idx - 1]\n    let thetaRight = idx < theta.length ? theta[idx] : Math.PI / 2\n\n    return Math.min(Math.PI/2,  (thetaLeft + r * (thetaRight - thetaLeft)))\n\n}\n\nconst colorAlphaCache = new Map()\n\nfunction getAlphaColor(color, alpha) {\n    const key = `${color}_${alpha}`\n    let c = colorAlphaCache.get(key)\n    if (!c) {\n        c = IGVColor.addAlpha(color, alpha)\n        colorAlphaCache.set(key, c)\n    }\n    return c\n}\n\n\n/**\n * Called in the context of FeatureSource  (i.e. this == the feature source (a TextFeatureSource) for the track\n *\n * @param allFeatures\n * @returns {[]}\n */\nfunction getWGFeatures(allFeatures) {\n\n    const makeWGFeature = (f) => {\n        const wg = Object.assign({}, f)\n        wg.chr = \"all\"\n        wg.start = genome.getGenomeCoordinate(f.chr1, f.start1)\n        wg.end = genome.getGenomeCoordinate(f.chr2, f.end2)\n        return wg\n    }\n\n    const genome = this.genome\n\n    // First pass -- find the max score feature\n    let maxScoreFeature\n    let totalFeatureCount = 0\n    for (let c of genome.wgChromosomeNames) {\n        let chrFeatures = allFeatures[c]\n        if (chrFeatures) {\n            for (let f of chrFeatures) {\n                if (!f.dup) {\n                    totalFeatureCount++\n                    if (f.score && (!maxScoreFeature || f.score > maxScoreFeature.score)) {\n                        maxScoreFeature = f\n                    }\n                }\n            }\n        }\n    }\n\n    const maxCount = this.maxWGCount\n    const nBins = maxScoreFeature && maxScoreFeature.score > 0 && totalFeatureCount > maxCount ? 5 : 1   // TODO make a function of total # of features & maxCount?\n    const featuresPerBin = Math.floor(maxCount / nBins)\n    const binSize = maxScoreFeature && maxScoreFeature.score > 0 ? Math.log(maxScoreFeature.score) / nBins : Number.MAX_SAFE_INTEGER\n\n    let binnedFeatures = []\n    let counts = []\n    for (let i = 0; i < nBins; i++) {\n        counts.push([0])\n        binnedFeatures.push([])\n    }\n\n    for (let c of genome.wgChromosomeNames) {\n        let chrFeatures = allFeatures[c]\n        if (chrFeatures) {\n            for (let f of chrFeatures) {\n                if (!f.dup) {\n                    const bin = f.score  ? Math.max(0, Math.min(nBins - 1, Math.floor(Math.log(f.score) / binSize))) : 0\n                    if (binnedFeatures[bin].length < featuresPerBin) {\n                        binnedFeatures[bin].push(makeWGFeature(f))\n                    } else {\n                        //Reservoir sampling\n                        const samplingProb = featuresPerBin / (counts[bin] + 1)\n                        if (Math.random() < samplingProb) {\n                            const idx = Math.floor(Math.random() * (featuresPerBin - 1))\n                            binnedFeatures[bin][idx] = makeWGFeature(f)\n                        }\n                    }\n                    counts[bin]++\n                }\n            }\n        }\n    }\n\n    let wgFeatures\n    if (nBins === 1) {\n        wgFeatures = binnedFeatures[0]\n    } else {\n        wgFeatures = []\n        for (let bf of binnedFeatures) {\n            for (let f of bf) wgFeatures.push(f)\n        }\n        // Keep the feature with max score\n        if (maxScoreFeature) {\n            wgFeatures.push(makeWGFeature(maxScoreFeature))\n        }\n        wgFeatures.sort(function (a, b) {\n            return a.start - b.start\n        })\n        console.log(wgFeatures.length)\n    }\n\n\n    return wgFeatures\n}\n\n/**\n * Extract a gff style info column for popup text.  This convention used by 10X for bedpe files\n *     ALLELIC_FRAC=0.0375670840787;BLACK1=.;BLACK2=.;...\n * @param data\n * @param str\n */\nfunction extractInfoColumn(data, str) {\n    const kvs = str.split(';')\n    for (let t of kvs) {\n        const kv = t.split('=')\n        if (kv.length === 2) {\n            data.push({name: kv[0], value: kv[1]})\n        }\n    }\n\n}\n\nexport default InteractionTrack\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport FeatureSource from '../feature/featureSource.js'\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport {createCheckbox} from \"../igv-icons.js\"\nimport {ColorTable, PaletteColorTable} from \"../util/colorPalletes.js\"\nimport {makeVCFChords, sendChords} from \"../jbrowse/circularViewUtils.js\"\nimport {FileUtils, StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst isString = StringUtils.isString\n\nconst DEFAULT_COLOR = \"rgb(0,0,150)\"\nconst DEFAULT_VISIBILITY_WINDOW = 1000000\nconst TOP_MARGIN = 10\nconst STANDARD_FIELDS = new Map([[\"REF\", \"referenceBases\"], [\"ALT\", \"alternateBases\"], [\"QUAL\", \"quality\"], [\"FILTER\", \"filter\"]])\n\n\nclass VariantTrack extends TrackBase {\n\n    static defaults = {\n        displayMode: \"EXPANDED\",\n        sortDirection: \"ASC\",\n        showGenotypes: true,\n        squishedVariantHeight: 2,\n        squishedCallHeight: 1,\n        expandedCallHeight: 10,\n        expandedVGap: 2,\n        squishedVGap: 1,\n        expandedGroupGap: 10,\n        squishedGroupGap: 5,\n        featureHeight: 14,\n        noGenotypeColor: \"rgb(200,180,180)\",\n        noCallColor: \"rgb(225, 225, 225)\",\n        nonRefColor: \"rgb(200, 200, 215)\",\n        mixedColor: \"rgb(200, 220, 200)\",\n        homrefColor: \"rgb(200, 200, 200)\",\n        homvarColor: \"rgb(17,248,254)\",\n        hetvarColor: \"rgb(34,12,253)\",\n        colorBy: undefined,\n        visibilityWindow: undefined,\n        labelDisplayMode: undefined,\n        type: \"variant\"\n    }\n\n    constructor(config, browser) {\n        super(config, browser)\n    }\n\n    init(config) {\n\n        super.init(config)\n\n        this.expandedVariantHeight = config.expandedVariantHeight || config.variantHeight || 10\n\n        this.featureSource = FeatureSource(config, this.browser.genome)\n\n        this._initColorBy = config.colorBy\n        if (config.colorTable) {\n            this.colorTables = new Map()\n            this.colorTables.set(config.colorBy, new ColorTable(config.colorTable))\n        }\n        this._color = config.color\n        this._strokecolor = config.strokecolor\n        this._context_hook = config.context_hook\n\n\n        // The number of variant rows are computed dynamically, but start with \"1\" by default\n        this.variantRowCount(1)\n\n    }\n\n    async postInit() {\n\n        this.header = await this.getHeader()   // cricital, don't remove'\n        if (this.disposed) return   // This track was removed during async load\n        if (undefined === this.visibilityWindow && this.config.indexed !== false) {\n            const fn = FileUtils.isFile(this.config.url) ? this.config.url.name : this.config.url\n            if (isString(fn) && fn.toLowerCase().includes(\"gnomad\")) {\n                this.visibilityWindow = 1000  // these are known to be very dense\n            } else if (typeof this.featureSource.defaultVisibilityWindow === 'function') {\n                this.visibilityWindow = await this.featureSource.defaultVisibilityWindow()\n            } else {\n                this.visibilityWindow = DEFAULT_VISIBILITY_WINDOW\n            }\n        }\n        return this\n\n    }\n\n    get supportsWholeGenome() {\n        return this.config.indexed === false || this.config.supportsWholeGenome === true\n    }\n\n    get color() {\n        return this._color || DEFAULT_COLOR\n    }\n\n    set color(c) {\n        this._color = c\n        this.colorBy = undefined\n    }\n\n    async getHeader() {\n\n        if (!this.header) {\n            if (typeof this.featureSource.getHeader === \"function\") {\n                const header = await this.featureSource.getHeader()\n                if (header) {\n                    this.callSets = header.callSets || []\n                }\n                this.header = header\n            }\n            this.sampleNames = this.callSets ? this.callSets.map(cs => cs.name) : []\n        }\n\n        return this.header\n    }\n\n    getCallsetsLength() {\n        return this.callSets ? this.callSets.length : 0\n    }\n\n    async getFeatures(chr, start, end, bpPerPixel) {\n\n        if (this.header === undefined) {\n            this.header = await this.getHeader()\n        }\n        return this.featureSource.getFeatures({chr, start, end, bpPerPixel, visibilityWindow: this.visibilityWindow})\n    }\n\n    hasSamples() {\n        return this.getCallsetsLength() > 0\n    }\n\n    getSamples() {\n        return {\n            yOffset: this.sampleYOffset,\n            names: this.sampleNames,\n            height: this.sampleHeight\n        }\n    }\n\n    /**\n     * The required height in pixels required for the track content.   This is not the visible track height, which\n     * can be smaller (with a scrollbar) or larger.\n     *\n     * @param features\n     * @returns {*}\n     */\n    computePixelHeight(features) {\n\n        if (!features || features.length == 0) return TOP_MARGIN\n\n        const nVariantRows = (this.displayMode === \"COLLAPSED\") ? 1 : this.nVariantRows\n        const vGap = (this.displayMode === \"SQUISHED\") ? this.squishedVGap : this.expandedVGap\n        const variantHeight = (this.displayMode === \"SQUISHED\") ? this.squishedVariantHeight : this.expandedVariantHeight\n        const callHeight = (this.displayMode === \"SQUISHED\") ? this.squishedCallHeight : this.expandedCallHeight\n        const nCalls = this.showGenotypes === false ? 0 : this.getCallsetsLength() * nVariantRows\n        const h = TOP_MARGIN + nVariantRows * (variantHeight + vGap)\n        return h + vGap + (nCalls + 1) * (callHeight + vGap)\n\n    }\n\n    variantRowCount(count) {\n        this.nVariantRows = count\n    }\n\n    draw({context, pixelWidth, pixelHeight, bpPerPixel, bpStart, pixelTop, features}) {\n\n        IGVGraphics.fillRect(context, 0, pixelTop, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n\n        const vGap = (\"SQUISHED\" === this.displayMode) ? this.squishedVGap : this.expandedVGap\n        const rowCount = (\"COLLAPSED\" === this.displayMode) ? 1 : this.nVariantRows\n        const variantHeight = (\"SQUISHED\" === this.displayMode) ? this.squishedVariantHeight : this.expandedVariantHeight\n        this.variantBandHeight = TOP_MARGIN + rowCount * (variantHeight + vGap)\n\n        let callSets = this.callSets\n        if (!callSets && this._f) {\n            callSets = this._f.callSets   // \"Complementary\" variant for structural variants\n        }\n        const nCalls = this.getCallsetsLength()\n        if (callSets && nCalls > 0 && this.showGenotypes !== false) {\n            IGVGraphics.strokeLine(context, 0, this.variantBandHeight, pixelWidth, this.variantBandHeight, {strokeStyle: 'rgb(224,224,224) '})\n        }\n\n        if (features) {\n\n            const callHeight = (\"SQUISHED\" === this.displayMode) ? this.squishedCallHeight : this.expandedCallHeight\n            const vGap = (\"SQUISHED\" === this.displayMode) ? this.squishedVGap : this.expandedVGap\n            const bpEnd = bpStart + pixelWidth * bpPerPixel + 1\n\n            // Loop through variants.  A variant == a row in a VCF file\n            for (let variant of features) {\n\n                if (variant.end < bpStart) continue\n                if (variant.start > bpEnd) break\n\n                const variantHeight = (\"SQUISHED\" === this.displayMode) ? this.squishedVariantHeight : this.expandedVariantHeight\n                const y = TOP_MARGIN + (\"COLLAPSED\" === this.displayMode ? 0 : variant.row * (variantHeight + vGap))\n                const h = variantHeight\n\n                // Compute pixel width.   Minimum width is 3 pixels,  if > 5 pixels create gap between variants\n                let x = Math.round((variant.start - bpStart) / bpPerPixel)\n                let x1 = Math.round((variant.end - bpStart) / bpPerPixel)\n                let w = Math.max(1, x1 - x)\n                if (w < 3) {\n                    w = 3\n                    x -= 1\n                } else if (w > 5) {\n                    x += 1\n                    w -= 2\n                }\n                context.fillStyle = this.getColorForFeature(variant)\n                context.fillRect(x, y, w, h)\n\n                //only paint stroke if a color is defined\n                let strokecolor = this.getVariantStrokecolor(variant)\n                if (strokecolor) {\n                    context.strokeStyle = strokecolor\n                    context.strokeRect(x, y, w, h)\n                }\n\n                // call hook if _context_hook fn is defined\n                this.callContextHook(variant, context, x, y, w, h)\n\n                variant.pixelRect = {x, y, w, h}\n\n                // Loop though the calls for this variant.  There will potentially be a call for each sample.\n                if (nCalls > 0 && this.showGenotypes !== false) {\n\n                    const nVariantRows = \"COLLAPSED\" === this.displayMode ? 1 : this.nVariantRows\n                    this.sampleYOffset = this.variantBandHeight + vGap\n                    this.sampleHeight = nVariantRows * (callHeight + vGap)  // For each sample, there is a call for each variant at this position\n\n                    let sampleNumber = 0\n                    if (callSets && variant.calls) {\n                        for (let callSet of callSets) {\n                            const call = variant.calls[callSet.id]\n                            if (call) {\n                                const row = \"COLLAPSED\" === this.displayMode ? 0 : variant.row\n                                const py = this.sampleYOffset + sampleNumber * this.sampleHeight + row * (callHeight + vGap)\n                                let allVar = true  // until proven otherwise\n                                let allRef = true\n                                let noCall = false\n\n                                if (call.genotype) {\n                                    for (let g of call.genotype) {\n                                        if ('.' === g) {\n                                            noCall = true\n                                            break\n                                        } else {\n                                            if (g !== 0) allRef = false\n                                            if (g === 0) allVar = false\n                                        }\n                                    }\n                                }\n\n                                if (!call.genotype) {\n                                    context.fillStyle = this.noGenotypeColor\n                                } else if (noCall) {\n                                    context.fillStyle = this.noCallColor\n                                } else if (allRef) {\n                                    context.fillStyle = this.homrefColor\n                                } else if (allVar) {\n                                    context.fillStyle = this.homvarColor\n                                } else {\n                                    context.fillStyle = this.hetvarColor\n                                }\n\n                                context.fillRect(x, py, w, callHeight)\n\n                                callSet.pixelRect = {x, y: py, w, h: callHeight}\n                            }\n                            sampleNumber++\n                        }\n                    }\n                }\n            }\n\n        } else {\n            console.log(\"No feature list\")\n        }\n    };\n\n\n    getColorForFeature(variant) {\n\n        const v = variant._f || variant\n        let variantColor\n\n        if (this.colorBy) {\n            const colorBy = this.colorBy\n            let value\n            if (v.info.hasOwnProperty(colorBy)) {\n                value = v.info[colorBy]\n            } else if (STANDARD_FIELDS.has(colorBy)) {\n                const key = STANDARD_FIELDS.get(colorBy)\n                value = v[key]\n            }\n            variantColor = this.getVariantColorTable(colorBy).getColor(value)\n            if (!variantColor) {\n                variantColor = \"gray\"\n            }\n\n        } else if (this._color) {\n            variantColor = (typeof this._color === \"function\") ? this._color(variant) : this._color\n        } else if (\"NONVARIANT\" === v.type) {\n            variantColor = this.nonRefColor\n        } else if (\"MIXED\" === v.type) {\n            variantColor = this.mixedColor\n        } else {\n            variantColor = this.color\n        }\n        return variantColor\n    }\n\n\n    getVariantStrokecolor(variant) {\n\n        const v = variant._f || variant\n        let variantStrokeColor\n\n        if (this._strokecolor) {\n            variantStrokeColor = (typeof this._strokecolor === \"function\") ? this._strokecolor(v) : this._strokecolor\n        } else {\n            variantStrokeColor = undefined\n        }\n        return variantStrokeColor\n    }\n\n    callContextHook(variant, context, x, y, w, h) {\n        if (this._context_hook) {\n            if (typeof this._context_hook === \"function\") {\n                const v = variant._f || variant\n\n                context.save()\n                this._context_hook(v, context, x, y, w, h)\n                context.restore()\n            }\n        }\n    }\n\n    clickedFeatures(clickState) {\n\n        let featureList = super.clickedFeatures(clickState)\n\n        const vGap = (this.displayMode === 'EXPANDED') ? this.expandedVGap : this.squishedVGap\n        const callHeight = vGap + (\"SQUISHED\" === this.displayMode ? this.squishedCallHeight : this.expandedCallHeight)\n        // Find the variant row (i.e. row assigned during feature packing)\n        const yOffset = clickState.y\n        if (yOffset <= this.variantBandHeight) {\n            // Variant\n            const variantHeight = (\"SQUISHED\" === this.displayMode) ? this.squishedVariantHeight : this.expandedVariantHeight\n            const variantRow = Math.floor((yOffset - TOP_MARGIN) / (variantHeight + vGap))\n            if (\"COLLAPSED\" !== this.displayMode) {\n                featureList = featureList.filter(f => f.row === variantRow)\n            }\n        } else if (this.callSets) {\n            const callSets = this.callSets\n            const sampleY = yOffset - this.variantBandHeight\n            const sampleRow = Math.floor(sampleY / this.sampleHeight)\n            if (sampleRow >= 0 && sampleRow < callSets.length) {\n                const variantRow = Math.floor((sampleY - sampleRow * this.sampleHeight) / callHeight)\n                const variants = \"COLLAPSED\" === this.displayMode ? featureList : featureList.filter(f => f.row === variantRow)\n                const cs = callSets[sampleRow]\n                featureList = variants.map(v => {\n                    const call = v.calls[cs.id]\n                    expandGenotype(call, v)\n                    return call\n                })\n            }\n        }\n\n        return featureList\n    }\n\n\n    /**\n     * Return \"popup data\" for feature @ genomic location.  Data is an array of key-value pairs\n     */\n    popupData(clickState, featureList) {\n\n        if (featureList === undefined) featureList = this.clickedFeatures(clickState)\n        const genomicLocation = clickState.genomicLocation\n        const genomeID = this.browser.genome.id\n        const sampleInformation = this.browser.sampleInformation\n\n        let popupData = []\n        for (let v of featureList) {\n\n            const f = v._f || v    // Get real variant from psuedo-variant, e.g. whole genome or SV mate\n\n            if (popupData.length > 0) {\n                popupData.push({html: '<hr style=\"border-top-width:2px ;border-color: #c9c3ba\" />'})\n            }\n\n            if (typeof f.popupData === 'function') {\n                const v = f.popupData(genomicLocation, genomeID)\n                Array.prototype.push.apply(popupData, v)\n            } else {\n                // Assume this is a call (genotype)\n                const call = f\n\n                if (call.callSetName !== undefined) {\n                    popupData.push({name: 'Name', value: call.callSetName})\n                }\n\n                if (call.genotypeName) {\n                    popupData.push({name: 'Genotype', value: call.genotypeName})\n                }\n\n                if (call.phaseset !== undefined) {\n                    popupData.push({name: 'Phase set', value: call.phaseset})\n                }\n                if (call.genotypeLikelihood !== undefined) {\n                    popupData.push({name: 'genotypeLikelihood', value: call.genotypeLikelihood.toString()})\n                }\n\n                if (sampleInformation) {\n                    var attr = sampleInformation.getAttributes(call.callSetName)\n                    if (attr) {\n                        Object.keys(attr).forEach(function (attrName) {\n                            var displayText = attrName.replace(/([A-Z])/g, \" $1\")\n                            displayText = displayText.charAt(0).toUpperCase() + displayText.slice(1)\n                            popupData.push({name: displayText, value: attr[attrName]})\n                        })\n                    }\n                }\n\n                var infoKeys = Object.keys(call.info)\n                if (infoKeys.length) {\n                    popupData.push('<hr/>')\n                }\n                infoKeys.forEach(function (key) {\n                    popupData.push({name: key, value: decodeURIComponent(call.info[key])})\n                })\n            }\n        }\n        return popupData\n\n    }\n\n\n// VariantTrack.prototype.contextMenuItemList = function (clickState) {\n//\n//     const self = this;\n//     const menuItems = [];\n//\n//     const featureList = this.clickedFeatures(clickState);\n//\n//     if (this.callSets && featureList && featureList.length > 0) {\n//\n//         featureList.forEach(function (variant) {\n//\n//             if ('str' === variant.type) {\n//\n//                 menuItems.push({\n//                     label: 'Sort by allele length',\n//                     click: function () {\n//                         sortCallSetsByAlleleLength(self.callSets, variant, self.sortDirection);\n//                         self.sortDirection = (self.sortDirection === \"ASC\") ? \"DESC\" : \"ASC\";\n//                         self.trackView.repaintViews();\n//                     }\n//                 });\n//\n//             }\n//\n//         });\n//     }\n//\n//\n//     function sortCallSetsByAlleleLength(callSets, variant, direction) {\n//         var d = (direction === \"DESC\") ? 1 : -1;\n//         Object.keys(callSets).forEach(function (property) {\n//             callSets[property].sort(function (a, b) {\n//                 var aNan = isNaN(variant.calls[a.id].genotype[0]);\n//                 var bNan = isNaN(variant.calls[b.id].genotype[0]);\n//                 if (aNan && bNan) {\n//                     return 0;\n//                 } else if (aNan) {\n//                     return 1;\n//                 } else if (bNan) {\n//                     return -1;\n//                 } else {\n//                     var a0 = getAlleleString(variant.calls[a.id], variant, 0);\n//                     var a1 = getAlleleString(variant.calls[a.id], variant, 1);\n//                     var b0 = getAlleleString(variant.calls[b.id], variant, 0);\n//                     var b1 = getAlleleString(variant.calls[b.id], variant, 1);\n//                     var result = Math.max(b0.length, b1.length) - Math.max(a0.length, a1.length);\n//                     if (result === 0) {\n//                         result = Math.min(b0.length, b1.length) - Math.min(a0.length, a1.length);\n//                     }\n//                     return d * result;\n//                 }\n//             });\n//         });\n//     }\n//\n//\n//     return menuItems;\n//\n// };\n\n    menuItemList() {\n\n        const menuItems = []\n\n        // color-by INFO attribute\n        if (this.header.INFO) {\n            //Code below will present checkboxes for all info fields of type \"String\".   Wait until this is requested\n            //const stringInfoKeys = Object.keys(this.header.INFO).filter(key => \"String\" === this.header.INFO[key].Type);\n\n            // For now stick to explicit info fields (well, exactly 1 for starters)\n            if (this.header.INFO) {\n                //const stringInfoKeys = Object.keys(this.header.INFO).filter(key => this.header.INFO[key].Type === \"String\")\n                const stringInfoKeys = this.header.INFO.SVTYPE ? ['SVTYPE'] : []\n                if (this._initColorBy && this._initColorBy !== 'SVTYPE') {\n                    stringInfoKeys.push(this._initColorBy)\n                }\n                if (stringInfoKeys.length > 0) {\n                    menuItems.push('<hr/>')\n                    const $e = $('<div class=\"igv-track-menu-category igv-track-menu-border-top\">')\n                    $e.text('Color by:')\n                    menuItems.push({name: undefined, object: $e, click: undefined, init: undefined})\n                    stringInfoKeys.sort()\n                    for (let item of stringInfoKeys) {\n                        const selected = (this.colorBy === item)\n                        const label = item ? item : 'None'\n                        menuItems.push(this.colorByCB({key: item, label: label}, selected))\n                    }\n                    menuItems.push(this.colorByCB({key: undefined, label: 'None'}, this.colorBy === undefined))\n                    menuItems.push('<hr/>')\n                }\n            }\n        }\n\n        if (this.getCallsetsLength() > 0) {\n            menuItems.push({object: $('<div class=\"igv-track-menu-border-top\">')})\n            menuItems.push({\n                object: $(createCheckbox(\"Show Genotypes\", this.showGenotypes)),\n                click: () => {\n                    this.showGenotypes = !this.showGenotypes\n                    //adjustTrackHeight();\n                    this.trackView.checkContentHeight()\n                    this.trackView.repaintViews()\n                }\n            })\n        }\n\n        menuItems.push({object: $('<div class=\"igv-track-menu-border-top\">')})\n        for (let displayMode of [\"COLLAPSED\", \"SQUISHED\", \"EXPANDED\"]) {\n            var lut =\n                {\n                    \"COLLAPSED\": \"Collapse\",\n                    \"SQUISHED\": \"Squish\",\n                    \"EXPANDED\": \"Expand\"\n                }\n\n            menuItems.push(\n                {\n                    object: $(createCheckbox(lut[displayMode], displayMode === this.displayMode)),\n                    click: () => {\n                        this.displayMode = displayMode\n                        this.trackView.checkContentHeight()\n                        this.trackView.repaintViews()\n                    }\n                })\n        }\n\n        // Experimental JBrowse circular view integration\n        if (this.browser.circularView) {\n\n            menuItems.push('<hr>')\n            menuItems.push({\n                label: 'Add SVs to circular view',\n                click: () => {\n                    const inView = []\n                    for (let viewport of this.trackView.viewports) {\n                        this.sendChordsForViewport(viewport)\n                    }\n                }\n            })\n        }\n\n        return menuItems\n    }\n\n\n    contextMenuItemList(clickState) {\n\n        // Experimental JBrowse circular view integration\n        if (this.browser.circularView) {\n            const viewport = clickState.viewport\n            const list = []\n\n            list.push({\n                label: 'Add SVs to Circular View',\n                click: () => {\n                    this.sendChordsForViewport(viewport)\n                }\n            })\n\n            list.push('<hr/>')\n            return list\n        }\n    }\n\n\n    sendChordsForViewport(viewport) {\n        const refFrame = viewport.referenceFrame\n        let inView\n        if (\"all\" === refFrame.chr) {\n            const all = this.featureSource.getAllFeatures()\n            const arrays = Object.keys(all).map(k => all[k])\n            inView = [].concat(...arrays)\n        } else {\n            inView = this.featureSource.featureCache.queryFeatures(refFrame.chr, refFrame.start, refFrame.end)\n\n        }\n\n        const chords = makeVCFChords(inView)\n        sendChords(chords, this, refFrame, 0.5)\n    }\n\n    /**\n     * Create a \"color by\" checkbox menu item, optionally initially checked\n     * @param menuItem\n     * @param showCheck\n     * @returns {{init: undefined, name: undefined, click: clickHandler, object: (jQuery|HTMLElement|jQuery.fn.init)}}\n     */\n    colorByCB(menuItem, showCheck) {\n\n        const $e = $(createCheckbox(menuItem.label, showCheck))\n        const clickHandler = () => {\n\n            if (menuItem.key === this.colorBy) {\n                this.colorBy = undefined\n                delete this.config.colorBy\n                this.trackView.repaintViews()\n            } else {\n                this.colorBy = menuItem.key\n                this.config.colorBy = menuItem.key\n                this.trackView.repaintViews()\n            }\n\n        }\n\n        return {name: undefined, object: $e, click: clickHandler, init: undefined}\n    }\n\n    getState() {\n\n        const config = super.getState()\n        if (this._color && typeof this._color !== \"function\") {\n            config.color = this._color\n        }\n        return config\n\n    }\n\n    getVariantColorTable(key) {\n\n        if (!this.colorTables) {\n            this.colorTables = new Map()\n        }\n\n        if (!this.colorTables.has(key)) {\n            let tbl\n            switch (key) {\n                case \"SVTYPE\" :\n                    tbl = SV_COLOR_TABLE\n                    break\n                default:\n                    tbl = new PaletteColorTable(\"Set1\")\n            }\n            this.colorTables.set(key, tbl)\n        }\n        return this.colorTables.get(key)\n    }\n}\n\n\nfunction expandGenotype(call, variant) {\n\n    if (call.genotype) {\n        let gt = ''\n        if (variant.alternateBases === \".\") {\n            gt = \"No Call\"\n        } else {\n            const altArray = variant.alternateBases.split(\",\")\n            for (let allele of call.genotype) {\n                if (gt.length > 0) {\n                    gt += \"|\"\n                }\n                if ('.' === allele) {\n                    gt += '.'\n                } else if (allele === 0) {\n                    gt += variant.referenceBases\n                } else {\n                    let alt = altArray[allele - 1].replace(\"<\", \"&lt;\")\n                    gt += alt\n                }\n            }\n        }\n        call.genotypeName = gt\n    }\n}\n\n\nconst SV_COLOR_TABLE = new ColorTable({\n    'DEL': '#ff2101',\n    'INS': '#001888',\n    'DUP': '#028401',\n    'INV': '#008688',\n    'CNV': '#8931ff',\n    'BND': '#891100',\n    '*': '#002eff'\n})\n\n\nexport default VariantTrack\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport FeatureSource from '../feature/featureSource.js'\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport {IGVMath} from \"../../node_modules/igv-utils/src/index.js\"\nimport MenuUtils from \"../ui/menuUtils.js\"\nimport GtexUtils from \"./gtexUtils.js\"\n\nclass EqtlTrack extends TrackBase {\n\n    constructor(config, browser) {\n\n        super(config, browser)\n    }\n\n    init(config) {\n        super.init(config)\n\n        this.name = config.name\n        this.pValueField = config.pValueField || \"pValue\"\n        this.geneField = config.geneField || \"geneSymbol\"\n        this.snpField = config.snpField || \"snp\"\n\n        const min = config.minLogP || config.min\n        const max = config.maxLogP || config.max\n        this.dataRange = {\n            min: min || 3.5,\n            max: max || 25\n        }\n        if (!max) {\n            this.autoscale = true\n        } else {\n            this.autoscale = config.autoscale\n        }\n        this.autoscalePercentile = (config.autoscalePercentile === undefined ? 98 : config.autoscalePercentile)\n\n\n        this.background = config.background    // No default\n        this.divider = config.divider || \"rgb(225,225,225)\"\n        this.dotSize = config.dotSize || 2\n        this.height = config.height || 100\n        this.autoHeight = false\n        this.disableButtons = config.disableButtons\n\n        // Limit visibility window to 2 mb,  gtex server gets flaky beyond that\n        this.visibilityWindow = config.visibilityWindow === undefined ?\n            2000000 : config.visibilityWindow >= 0 ? Math.min(2000000, config.visibilityWindow) : 2000000\n\n        this.featureSource = FeatureSource(config, this.browser.genome)\n\n        GtexUtils.gtexLoaded = true\n    }\n\n    paintAxis(ctx, pixelWidth, pixelHeight) {\n\n        const yScale = (this.dataRange.max - this.dataRange.min) / pixelHeight\n\n        const font = {\n            'font': 'normal 10px Arial',\n            'textAlign': 'right',\n            'strokeStyle': \"black\"\n        }\n\n        IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n\n        // Determine a tick spacing such that there is at least 10 pixels between ticks\n\n        const n = Math.ceil((this.dataRange.max - this.dataRange.min) * 10 / pixelHeight)\n\n        for (let p = 4; p <= this.dataRange.max; p += n) {\n\n            // TODO: Dashes may not actually line up with correct scale. Ask Jim about this\n\n            const ref = 0.85 * pixelWidth\n            const x1 = ref - 5\n            const x2 = ref\n            const y = pixelHeight - (p - this.dataRange.min) / yScale\n\n            IGVGraphics.strokeLine(ctx, x1, y, x2, y, font) // Offset dashes up by 2 pixel\n\n            if (y > 8) {\n                IGVGraphics.fillText(ctx, p, x1 - 1, y + 2, font)\n            } // Offset numbers down by 2 pixels;\n        }\n\n        font['textAlign'] = 'center'\n\n        IGVGraphics.fillText(ctx, \"-log10(pvalue)\", pixelWidth / 4, pixelHeight / 2, font, {rotate: {angle: -90}})\n\n    };\n\n    async getFeatures(chr, start, end) {\n\n        const pValueField = this.pValueField\n        const visibilityWindow = this.visibilityWindow\n        const features = await this.featureSource.getFeatures({chr, start, end, visibilityWindow})\n        features.forEach(function (f) {\n            f.value = f[pValueField]\n        })\n        return features\n    }\n\n    draw(options) {\n\n        const ctx = options.context\n\n        const pixelWidth = options.pixelWidth\n        const pixelHeight = options.pixelHeight\n\n        if (this.background) {\n            IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': this.background})\n        }\n        IGVGraphics.strokeLine(ctx, 0, pixelHeight - 1, pixelWidth, pixelHeight - 1, {'strokeStyle': this.divider})\n\n        const drawEqtls = (drawSelected) => {\n\n            const radius = drawSelected ? 2 * this.dotSize : this.dotSize\n            const bpStart = options.bpStart\n            const yScale = (this.dataRange.max - this.dataRange.min) / pixelHeight\n            const selection = options.referenceFrame.selection\n\n            for (let eqtl of options.features) {\n\n                const px = (eqtl.start - bpStart + 0.5) / options.bpPerPixel\n                if (px < 0) continue\n                else if (px > pixelWidth) break\n\n                const snp = eqtl.snp.toUpperCase()\n                const geneName = eqtl[this.geneField].toUpperCase()\n\n                const isSelected = selection &&\n                    (selection.snp === snp || selection.gene === geneName)\n\n                if (!drawSelected || isSelected) {\n\n                    // Add eqtl's gene to the selection if this is the selected snp.\n                    // TODO -- this should not be done here in the rendering code.\n                    if (selection && selection.snp === snp) {\n                        selection.addGene(geneName)\n                    }\n\n                    var mLogP = -Math.log(eqtl[this.pValueField]) / Math.LN10\n                    if (mLogP >= this.dataRange.min) {\n                        let capped\n                        if (mLogP > this.dataRange.max) {\n                            mLogP = this.dataRange.max\n                            capped = true\n                        } else {\n                            capped = false\n\n                        }\n\n                        const py = Math.max(0 + radius, pixelHeight - Math.round((mLogP - this.dataRange.min) / yScale))\n                        eqtl.px = px\n                        eqtl.py = py\n                        eqtl.radius = radius\n\n                        let color\n                        if (drawSelected && selection) {\n                            color = selection.colorForGene(geneName)\n                            IGVGraphics.setProperties(ctx, {fillStyle: color, strokeStyle: \"black\"})\n                        } else {\n                            color = capped ? \"rgb(150, 150, 150)\" : \"rgb(180, 180, 180)\"\n                            IGVGraphics.setProperties(ctx, {fillStyle: color, strokeStyle: color})\n                        }\n\n                        IGVGraphics.fillCircle(ctx, px, py, radius)\n                        IGVGraphics.strokeCircle(ctx, px, py, radius)\n                    }\n                }\n            }\n        }\n\n        // Draw in two passes, with \"selected\" eqtls drawn last\n        drawEqtls(false)\n        drawEqtls(true)\n\n    }\n\n    /**\n     * Return \"popup data\" for feature @ genomic location.  Data is an array of key-value pairs\n     */\n    popupData(clickState, features) {\n\n        if(features === undefined) features = clickState.viewport.cachedFeatures\n        if (!features || features.length === 0) return []\n\n        const tolerance = 3\n        const tissue = this.name\n        const popupData = []\n\n        for (let feature of features) {\n            // Hit test --use square vs circle for efficiency (no sqrt)\n            if (Math.abs(feature.px - clickState.canvasX) < (feature.radius + tolerance) &&\n                Math.abs(feature.py - clickState.canvasY) < (feature.radius + tolerance)) {\n\n                if (popupData.length > 0) {\n                    popupData.push('<hr/>')\n                }\n                popupData.push(\n                    {name: \"snp id\", value: feature.snp},\n                    {name: \"gene id\", value: feature.geneId},\n                    {name: \"gene name\", value: feature.geneName},\n                    {name: \"p value\", value: feature.pValue},\n                    {name: \"tissue\", value: tissue})\n\n            }\n        }\n\n        return popupData\n    }\n\n    menuItemList() {\n        return MenuUtils.numericDataMenuItems(this.trackView)\n    }\n\n    doAutoscale(featureList) {\n\n        if (featureList.length > 0) {\n\n            var values = featureList\n                .map(function (eqtl) {\n                    return -Math.log(eqtl.value) / Math.LN10\n                })\n\n            this.dataRange.max = IGVMath.percentile(values, this.autoscalePercentile)\n        } else {\n            // No features -- default\n            const max = this.config.maxLogP || this.config.max\n            this.dataRange.max = max || 25\n        }\n\n        return this.dataRange\n    }\n\n}\n\nexport default EqtlTrack\n","/**\n * Colors used for coding omosomes\n */\n\nconst GWASColors = {\n    \"X\": \"rgb(204, 153, 0)\",\n    \"Y\": \"rgb(153, 204, 0)\",\n    \"Un\": \"darkGray)\",\n    \"1\": \"rgb(80, 80, 255)\",\n    \"2\": \"rgb(206, 61, 50)\",\n    \"2a\": \"rgb(210, 65, 55)\",\n    \"2b\": \"rgb(215, 70, 60)\",\n    \"3\": \"rgb(116, 155, 88)\",\n    \"4\": \"rgb(240, 230, 133)\",\n    \"5\": \"rgb(70, 105, 131)\",\n    \"6\": \"rgb(186, 99, 56)\",\n    \"7\": \"rgb(93, 177, 221)\",\n    \"8\": \"rgb(128, 34, 104)\",\n    \"9\": \"rgb(107, 215, 107)\",\n    \"10\": \"rgb(213, 149, 167)\",\n    \"11\": \"rgb(146, 72, 34)\",\n    \"12\": \"rgb(131, 123, 141)\",\n    \"13\": \"rgb(199, 81, 39)\",\n    \"14\": \"rgb(213, 143, 92)\",\n    \"15\": \"rgb(122, 101, 165)\",\n    \"16\": \"rgb(228, 175, 105)\",\n    \"17\": \"rgb(59, 27, 83)\",\n    \"18\": \"rgb(205, 222, 183)\",\n    \"19\": \"rgb(97, 42, 121)\",\n    \"20\": \"rgb(174, 31, 99)\",\n    \"21\": \"rgb(231, 199, 111)\",\n    \"22\": \"rgb(90, 101, 94)\",\n    \"23\": \"rgb(204, 153, 0)\",\n    \"24\": \"rgb(153, 204, 0)\",\n    \"25\": \"rgb(51, 204, 0)\",\n    \"26\": \"rgb(0, 204, 51)\",\n    \"27\": \"rgb(0, 204, 153)\",\n    \"28\": \"rgb(0, 153, 204)\",\n    \"29\": \"rgb(10, 71, 255)\",\n    \"30\": \"rgb(71, 117, 255)\",\n    \"31\": \"rgb(255, 194, 10)\",\n    \"32\": \"rgb(255, 209, 71)\",\n    \"33\": \"rgb(153, 0, 51)\",\n    \"34\": \"rgb(153, 26, 0)\",\n    \"35\": \"rgb(153, 102, 0)\",\n    \"36\": \"rgb(128, 153, 0)\",\n    \"37\": \"rgb(51, 153, 0)\",\n    \"38\": \"rgb(0, 153, 26)\",\n    \"39\": \"rgb(0, 153, 102)\",\n    \"40\": \"rgb(0, 128, 153)\",\n    \"41\": \"rgb(0, 51, 153)\",\n    \"42\": \"rgb(26, 0, 153)\",\n    \"43\": \"rgb(102, 0, 153)\",\n    \"44\": \"rgb(153, 0, 128)\",\n    \"45\": \"rgb(214, 0, 71)\",\n    \"46\": \"rgb(255, 20, 99)\",\n    \"47\": \"rgb(0, 214, 143)\",\n    \"48\": \"rgb(20, 255, 177)\"\n}\n\n//  aliasing\nfor (let key of Object.keys(GWASColors)) {\n    const altName = \"chr\" + key\n    GWASColors[altName] = GWASColors[key]\n}\n\n// romanizing\nfor(let a = 1; a <= 48; a++) {\n    if(a === 10) continue   // Don't overide \"X\"\n    const roman = romanize(a)\n    GWASColors[roman] = GWASColors[a.toString()]\n}\n\n\nfunction romanize (num) {\n    if (!+num) return false;\n    var digits = String(+num).split('');\n    var key = ['','C','CC','CCC','CD','D','DC','DCC','DCCC','CM',\n        '','X','XX','XXX','XL','L','LX','LXX','LXXX','XC',\n        '','I','II','III','IV','V','VI','VII','VIII','IX'];\n    var roman = '', i = 3;\n    while (i--) roman = (key[+digits.pop() + (i * 10)] || '') + roman;\n    return Array(+digits.join('') + 1).join('M') + roman;\n}\n\nexport default GWASColors","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport FeatureSource from '../feature/featureSource.js'\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport {BinnedColorScale, ConstantColorScale} from \"../util/colorScale.js\"\nimport {doAutoscale} from \"../util/igvUtils.js\"\nimport MenuUtils from \"../ui/menuUtils.js\"\nimport GWASColors from \"./gwasColors.js\"\nimport {ColorTable, randomColor} from \"../util/colorPalletes.js\"\nimport GwasColors from \"./gwasColors.js\"\n\nconst DEFAULT_POPOVER_WINDOW = 100000000\n\n//const type = \"gwas\";\n\nclass GWASTrack extends TrackBase {\n\n    constructor(config, browser) {\n\n        super(config, browser)\n    }\n\n    init(config) {\n\n        super.init(config)\n\n        this.useChrColors = config.useChrColors === undefined ? true : config.useChrColors\n        this.trait = config.trait\n        this.posteriorProbability = config.posteriorProbability\n        this.valueProperty = \"bed\" === config.format ? \"score\" : \"value\"\n        this.height = config.height || 100   // The preferred height\n        this.autoscale = config.autoscale\n        this.autoscalePercentile = config.autoscalePercentile === undefined ? 98 : config.autoscalePercentile\n        this.background = config.background    // No default\n        this.divider = config.divider || \"rgb(225,225,225)\"\n        this.dotSize = config.dotSize || 3\n        this.popoverWindow = (config.popoverWindow === undefined ? DEFAULT_POPOVER_WINDOW : config.popoverWindow)\n\n        // Color settings\n        if (this.useChrColors) {\n            this.colorScale = new ColorTable(config.colorTable || GWASColors)\n        } else if (config.color) {\n            this.colorScale = new ConstantColorScale(config.color)\n        } else {\n            this.colorScale =\n                new BinnedColorScale(config.colorScale ||\n                    {\n                        thresholds: [5e-8, 5e-4, 0.5],\n                        colors: [\"rgb(255,50,50)\", \"rgb(251,100,100)\", \"rgb(251,170,170)\", \"rgb(227,238,249)\"],\n                    })\n        }\n\n        this.featureSource = FeatureSource(config, this.browser.genome)\n    }\n\n    async postInit() {\n\n        if (typeof this.featureSource.getHeader === \"function\") {\n            this.header = await this.featureSource.getHeader()\n            if (this.disposed) return   // This track was removed during async load\n        }\n\n        // Set properties from track line\n        if (this.header) {\n            this.setTrackProperties(this.header)   // setTrackProperties defined in TrackBase\n        }\n\n        // Set initial range if specfied, unless autoscale == true\n        if (!this.autoscale) {\n            if (this.posteriorProbability) {\n                this.dataRange = {\n                    min: this.config.min === undefined ? 0 : this.config.min,\n                    max: this.config.max === undefined ? 1 : this.config.max\n                }\n            } else {\n                this.dataRange = {\n                    min: this.config.min === undefined ? 0 : this.config.min,\n                    max: this.config.max === undefined ? 25 : this.config.max\n                }\n            }\n        }\n\n        return this\n\n    }\n\n\n    get supportsWholeGenome() {\n        return true\n    }\n\n    async getFeatures(chr, start, end) {\n        const visibilityWindow = this.visibilityWindow\n        return this.featureSource.getFeatures({chr, start, end, visibilityWindow})\n    }\n\n    draw(options) {\n\n        const featureList = options.features\n        const ctx = options.context\n        const pixelWidth = options.pixelWidth\n        const pixelHeight = options.pixelHeight\n        if (this.background) {\n            IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': this.background})\n        }\n        IGVGraphics.strokeLine(ctx, 0, pixelHeight - 1, pixelWidth, pixelHeight - 1, {'strokeStyle': this.divider})\n\n        if (featureList) {\n\n            const bpPerPixel = options.bpPerPixel\n            const bpStart = options.bpStart\n            const bpEnd = bpStart + pixelWidth * bpPerPixel + 1\n            for (let variant of featureList) {\n                const pos = variant.start\n                if (pos < bpStart) continue\n                if (pos > bpEnd) break\n\n                let val\n                if (this.posteriorProbability) {\n                    val = variant[this.valueProperty]\n                } else {\n                    const pvalue = variant[this.valueProperty]\n                    if (!pvalue) continue\n                    val = -Math.log10(pvalue)\n                }\n\n                const colorKey = this.useChrColors ?\n                    variant._f ? variant._f.chr : variant.chr :\n                    val\n\n                const color = this.colorScale.getColor(colorKey)\n                const yScale = (this.dataRange.max - this.dataRange.min) / pixelHeight\n                const px = Math.round((pos - bpStart) / bpPerPixel)\n                const py = Math.max(this.dotSize, pixelHeight - Math.round((val - this.dataRange.min) / yScale))\n\n                if (color) {\n                    IGVGraphics.setProperties(ctx, {fillStyle: color, strokeStyle: \"black\"})\n                }\n                IGVGraphics.fillCircle(ctx, px, py, this.dotSize)\n                variant.px = px\n                variant.py = py\n            }\n        }\n    }\n\n    paintAxis(ctx, pixelWidth, pixelHeight) {\n\n        IGVGraphics.fillRect(ctx, 0, 0, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n        var font = {\n            'font': 'normal 10px Arial',\n            'textAlign': 'right',\n            'strokeStyle': \"black\"\n        }\n\n        const yScale = (this.dataRange.max - this.dataRange.min) / pixelHeight\n        if (this.posteriorProbability) {\n            const n = 0.1\n            for (let p = this.dataRange.min; p < this.dataRange.max; p += n) {\n                const yp = pixelHeight - Math.round((p - this.dataRange.min) / yScale)\n                IGVGraphics.strokeLine(ctx, 45, yp - 2, 50, yp - 2, font) // Offset dashes up by 2 pixel\n                IGVGraphics.fillText(ctx, p.toFixed(1), 44, yp + 2, font) // Offset numbers down by 2 pixels;\n            }\n        } else {\n            const n = Math.ceil((this.dataRange.max - this.dataRange.min) * 10 / pixelHeight)\n            for (let p = this.dataRange.min; p < this.dataRange.max; p += n) {\n                const yp = pixelHeight - Math.round((p - this.dataRange.min) / yScale)\n                IGVGraphics.strokeLine(ctx, 45, yp, 50, yp, font) // Offset dashes up by 2 pixel\n                IGVGraphics.fillText(ctx, Math.floor(p), 44, yp + 4, font) // Offset numbers down by 2 pixels;\n            }\n        }\n\n        font['textAlign'] = 'center'\n        if (this.posteriorProbability) {\n            IGVGraphics.fillText(ctx, \"PPA\", pixelWidth / 2, pixelHeight / 2, font, {rotate: {angle: -90}})\n        } else {\n            IGVGraphics.fillText(ctx, \"-log10(pvalue)\", pixelWidth / 2, pixelHeight / 2, font, {rotate: {angle: -90}})\n        }\n    }\n\n    popupData(clickState, features) {\n\n        if (features === undefined) features = clickState.viewport.cachedFeatures\n\n        let data = []\n        const track = clickState.viewport.trackView.track\n\n        if (features) {\n            let count = 0\n            for (let f of features) {\n                const xDelta = Math.abs(clickState.canvasX - f.px)\n                const yDelta = Math.abs(clickState.canvasY - f.py)\n                const value = f[this.valueProperty]\n                if (xDelta < this.dotSize && yDelta < this.dotSize) {\n                    if (count > 0) {\n                        data.push(\"<HR/>\")\n                    }\n                    if (count == 5) {\n                        data.push(\"...\")\n                        break\n                    }\n                    if (typeof f.popupData === 'function') {\n                        data = data.concat(f.popupData())\n                    } else {\n                        const chr = f.realChr || f.chr\n                        const pos = (f.realStart || f.start) + 1\n                        data.push({name: 'chromosome', value: chr})\n                        data.push({name: 'position', value: pos})\n                        data.push({name: 'name', value: f.name})\n                        if (track.posteriorProbability) {\n                            data.push({name: 'posterior probability', value: value})\n                        } else {\n                            data.push({name: 'pValue', value: value})\n                        }\n                    }\n                    count++\n                }\n            }\n        }\n\n        return data\n    }\n\n    menuItemList() {\n        return MenuUtils.numericDataMenuItems(this.trackView)\n    }\n\n    doAutoscale(featureList) {\n\n        if (featureList.length > 0) {\n            // posterior probabilities are treated without modification, but we need to take a negative logarithm of P values\n            const valueProperty = this.valueProperty\n            const posterior = this.posteriorProbability\n            const features =\n                featureList.map(function (feature) {\n                    const v = feature[valueProperty]\n                    return {value: posterior ? v : -Math.log(v) / Math.LN10}\n                })\n            this.dataRange = doAutoscale(features)\n\n        } else {\n            // No features -- pick something reasonable for PPAs and p-values\n            if (this.posteriorProbability) {\n                this.dataRange = {min: this.config.min || 0, max: this.config.max || 1}\n            } else {\n                this.dataRange = {min: this.config.max || 25, max: this.config.min || 0}\n            }\n        }\n\n        return this.dataRange\n    }\n\n}\n\nexport default GWASTrack\n\n","import FeatureSource from '../feature/featureSource.js'\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport {isSimpleType} from \"../util/igvUtils.js\"\nimport paintAxis from \"../util/paintAxis.js\"\nimport MenuUtils from \"../ui/menuUtils.js\"\nimport {StringUtils} from \"../../node_modules/igv-utils/src/index.js\"\n\nconst X_PIXEL_DIFF_THRESHOLD = 1\n\nclass GCNVTrack extends TrackBase {\n\n    constructor(config, browser) {\n        super(config, browser)\n    }\n\n    init(config) {\n        super.init(config)\n\n        this.autoscale = config.autoscale || config.max === undefined\n        this.dataRange = {\n            min: config.min || 0,\n            max: config.max\n        }\n\n        this.windowFunction = config.windowFunction || \"mean\"\n        this.paintAxis = paintAxis\n        this.graphType = config.graphType || \"bar\"\n\n        //hack to avoid creating feature source multiple times.  If config.type is not set the file must be read\n        //to determine type, which results in creation of a feature source.\n        if (config._featureSource) {\n            this.featureSource = config._featureSource\n            delete config._featureSource\n        } else {\n            this.featureSource = FeatureSource(this.config, this.browser.genome)\n        }\n\n        // Visibility window hardcoded to -1  (== whole chromosome).  Draw method needs feature beyond current view,\n        // when/if this is resolved visibilityWindow can be used.\n        this.visibilityWindow = -1\n        this.featureSource.visibilityWindow = this.visibilityWindow\n    }\n\n    async postInit() {\n\n        if (typeof this.featureSource.getHeader === \"function\") {\n            this.header = await this.featureSource.getHeader()\n            if(this.disposed) return;   // This track was removed during async load\n            this.sampleNames = this.header.columnNames.slice(3)\n\n            // Set generic properties from track line\n            this.setTrackProperties(this.header)   // setTrackProperties defined in TrackBase\n\n            // set option to highlight sample track line on click\n            if (this.header.hasOwnProperty(\"clickToHighlight\")) {\n                let colour = this.header[\"clickToHighlight\"]\n                this.config.clickToHighlight = colour\n                this.config.samplesClickedToHighlight = {}\n            }\n\n            // Special track line properties\n            if (this.header.hasOwnProperty(\"highlight\")) {\n                this.config.highlightSamples = {}\n                let v = this.header[\"highlight\"]\n                if (!Array.isArray(v)) v = [v]\n                for (let h of v) {\n                    const tokens = h.split(\";\")\n                    if (tokens.length === 2) {\n                        this.config.highlightSamples[tokens[0]] = tokens[1]\n                    }\n\n                }\n            }\n        }\n    }\n\n    menuItemList() {\n        return MenuUtils.numericDataMenuItems(this.trackView)\n    }\n\n    async getFeatures(chr, start, end) {\n        const chrFeatures = await this.featureSource.getFeatures({\n            chr,\n            start: 0,\n            end: Number.MAX_SAFE_INTEGER,\n            visibilityWindow: this.visibilityWindow\n        })\n        let prevIndex = undefined\n        let nextIndex = undefined\n        for (let i = 1; i < chrFeatures.length - 1; i++) {\n            if (prevIndex === undefined && chrFeatures[i].end > start) {\n                prevIndex = i - 1\n            }\n            if (nextIndex === undefined && chrFeatures[i].start > end) {\n                nextIndex = i + 1\n                break\n            }\n        }\n        if (prevIndex === undefined) prevIndex = 0\n        if (nextIndex === undefined) nextIndex = chrFeatures.length\n        return chrFeatures.slice(prevIndex, nextIndex)\n    }\n\n    draw(options) {\n\n        const {features, context, bpPerPixel, bpStart, pixelWidth, pixelHeight} = options\n\n        ///let baselineColor;\n        //if (typeof self.color === \"string\" && self.color.startsWith(\"rgb(\")) {\n        //    baselineColor = IGVColor.addAlpha(self.color, 0.1);\n        //}\n\n        const yScale = (yValue) => {\n            return ((this.dataRange.max - yValue) / (this.dataRange.max - this.dataRange.min)) * pixelHeight\n        }\n\n        const getX = function (bpPosition) {\n            let x = Math.floor((bpPosition - bpStart) / bpPerPixel)\n            if (isNaN(x)) console.warn('isNaN(x). feature start ' + StringUtils.numberFormatter(bpPosition) +\n                ' bp start ' + StringUtils.numberFormatter(bpStart))\n            return x\n        }\n\n        const drawGuideLines = (options) => {\n            if (this.config.hasOwnProperty('guideLines')) {\n                for (let line of this.config.guideLines) {\n                    if (line.hasOwnProperty('color') && line.hasOwnProperty('y') && line.hasOwnProperty('dotted')) {\n                        let y = yScale(line.y)\n                        let props = {\n                            'strokeStyle': line['color'],\n                            'strokeWidth': 2\n                        }\n                        if (line['dotted']) IGVGraphics.dashedLine(options.context, 0, y, options.pixelWidth, y, 5, props)\n                        else IGVGraphics.strokeLine(options.context, 0, y, options.pixelWidth, y, props)\n                    }\n                }\n            }\n        }\n\n        if (features && features.length > 0) {\n\n            if (this.dataRange.min === undefined) this.dataRange.min = 0\n\n            // Max can be less than min if config.min is set but max left to autoscale. If that's the case there is\n            // nothing to paint.\n            if (this.dataRange.max > this.dataRange.min) {\n                const highlightSamples = this.config.highlightSamples\n                const onlyHandleClicksForHighlightedSamples = this.config.onlyHandleClicksForHighlightedSamples\n                const clickToHighlight = this.config.clickToHighlight\n\n                let previousEnd = -1\n                let previousValues = {}\n\n                let highlightConnectorLines = []\n                let highlightFeatureLines = []\n\n                // clickDetectorCache allows fast retrieval of whether a mouse click hits a rendered line segment\n                // by storing lists of rendered line segments, keyed by their right x coordinate in canvas pixel space.\n                // this cache is regenerated on every draw.\n                this.clickDetectorCache = {}\n\n                for (let feature of features) {\n                    const x1 = getX(feature.start)\n                    const x2 = getX(feature.end)\n                    const previousX = previousEnd >= 0 ? getX(previousEnd) : x1\n\n                    if (isNaN(x1) || isNaN(x2)) continue\n                    // if ((x1 - previousX < X_PIXEL_DIFF_THRESHOLD) && (x2 - x1 < X_PIXEL_DIFF_THRESHOLD)) continue;\n\n                    this.clickDetectorCache[x1] = []\n                    this.clickDetectorCache[x2] = []\n                    for (let i = 0; i < feature.values.length; i++) {\n                        const sampleName = this.sampleNames[i]\n                        const value = feature.values[i]\n                        const y = yScale(value)\n                        if (x1 - previousX >= X_PIXEL_DIFF_THRESHOLD) {\n                            const previousValue = previousValues[sampleName]\n                            const previousY = yScale(previousValue)\n                            const highlightColor = highlightSamples && highlightSamples[sampleName]\n\n\n                            if (highlightColor) {\n                                highlightConnectorLines.push([previousX, previousY, x1, y, highlightColor])\n                            } else if (clickToHighlight && sampleName in this.config.samplesClickedToHighlight) {\n                                highlightConnectorLines.push([previousX, previousY, x1, y, this.config.samplesClickedToHighlight[sampleName]])\n                            } else {\n                                IGVGraphics.strokeLine(context, previousX, previousY, x1, y, {strokeStyle: '#D9D9D9'})\n                            }\n                            if (!onlyHandleClicksForHighlightedSamples || sampleName in highlightSamples) {\n                                this.clickDetectorCache[x1].push([previousX, previousY, x1, y, sampleName, highlightColor || 'gray'])\n                            }\n                        }\n\n                        if (x2 - x1 >= X_PIXEL_DIFF_THRESHOLD) {\n                            const highlightColor = highlightSamples && highlightSamples[sampleName]\n                            if (highlightColor) {\n                                highlightFeatureLines.push([x1, y, x2, y, highlightColor])\n                            } else if (clickToHighlight && sampleName in this.config.samplesClickedToHighlight) {\n                                highlightFeatureLines.push([x1, y, x2, y, this.config.samplesClickedToHighlight[sampleName]])\n                            } else {\n                                IGVGraphics.strokeLine(context, x1, y, x2, y, {strokeStyle: 'gray'})\n                            }\n                            if (!onlyHandleClicksForHighlightedSamples || sampleName in highlightSamples) {\n                                this.clickDetectorCache[x2].push([x1, y, x2, y, sampleName, highlightColor || 'gray'])\n                            }\n                        }\n\n                        previousValues[sampleName] = value\n\n                        //IGVGraphics.fillCircle(ctx, px, y, pointSize / 2, {\"fillStyle\": color, \"strokeStyle\": color});\n                        //IGVGraphics.fillRect(ctx, x, y, width, height, {fillStyle: color});\n                    }\n                    previousEnd = feature.end\n                }\n\n                for (let f of highlightConnectorLines) {\n                    IGVGraphics.strokeLine(context, f[0], f[1], f[2], f[3], {strokeStyle: f[4], lineWidth: 1.3})\n                }\n                for (let f of highlightFeatureLines) {\n                    IGVGraphics.strokeLine(context, f[0], f[1], f[2], f[3], {strokeStyle: f[4], lineWidth: 2})\n                }\n\n                /*\n                // If the track includes negative values draw a baseline\n                if (this.dataRange.min < 0) {\n                    const basepx = (self.dataRange.max / (this.dataRange.max - this.dataRange.min)) * options.pixelHeight;\n                    IGVGraphics.strokeLine(context, 0, basepx, options.pixelWidth, basepx, {strokeStyle: baselineColor});\n                }\n                */\n            }\n        }\n\n        drawGuideLines(options)\n    }\n\n    doAutoscale(features) {\n\n        let min, max\n        if (features.length > 0) {\n            min = Number.MAX_VALUE\n            max = -Number.MAX_VALUE\n\n            features.forEach(function (feature) {\n                min = Math.min(min, ...feature.values)\n                max = Math.max(max, ...feature.values)\n            })\n\n            min -= 0.01\n            max += 0.01\n        } else {\n            // No features -- default\n            min = 0\n            max = 100\n        }\n\n        return {min: min, max: max}\n    }\n\n    clickedFeatures(clickState) {\n        //console.warn('click', clickState.canvasX, clickState.canvasY, clickState)\n\n        const BOUNDING_BOX_PADDING = 10\n        const MIN_DISTANCE_TO_SEGMENT = 5\n\n        const clickX = clickState.canvasX\n        const clickY = clickState.canvasY\n\n        let key = null\n        for (key of Object.keys(this.clickDetectorCache)) {\n            key = parseInt(key)\n            if (key >= clickX) {\n                break\n            }\n        }\n\n\n        if (key) {\n            let closestDistanceSoFar = Number.MAX_VALUE\n            let closestResult = []\n            const segments = this.clickDetectorCache[key]\n            for (let segment of segments) {\n                const x1 = segment[0]\n                const x2 = segment[2]\n                if (clickX < x1 || clickX > x2) return []\n\n                const y1 = segment[1]\n                const y2 = segment[3]\n\n                if ((clickY < Math.min(y1, y2) - BOUNDING_BOX_PADDING) || (clickY > Math.max(y1, y2) + BOUNDING_BOX_PADDING)) continue\n\n                const distance = distanceToLine(clickX, clickY, x1, y1, x2, y2)\n                if (distance < closestDistanceSoFar) {\n                    closestResult = [{'name': segment[4], 'color': segment[5]}]\n                    closestDistanceSoFar = distance\n                    //console.warn('closest:', 'name', segment[4], 'color', segment[5], distance);\n                }\n            }\n\n            if (closestDistanceSoFar < MIN_DISTANCE_TO_SEGMENT) {\n                // clickToHighlight set, add sample to dict of clicked lines\n                if (this.config.clickToHighlight) {\n                    if (closestResult[0]['name'] in this.config.samplesClickedToHighlight) {\n                        // clicked sample already highlighted => remove if clicked again\n                        delete this.config.samplesClickedToHighlight[closestResult[0]['name']]\n                    } else if (this.config.clickToHighlight === 'any') {\n                        var colourList = [\n                            'red', 'darkblue', 'green', 'teal', 'olivedrab',\n                            'orange', 'maroon', 'purple', 'blue', 'gold',\n                        ]\n                        var colour = colourList[Math.floor(Math.random() * (colourList.length + 1))]\n                        this.config.samplesClickedToHighlight[closestResult[0]['name']] = colour\n                    } else {\n                        this.config.samplesClickedToHighlight[closestResult[0]['name']] = this.config.clickToHighlight\n                    }\n                    this.trackView.repaintViews()  // prompt redraw to change colour of clicked sample\n                }\n                return closestResult\n            }\n        }\n\n        return []\n    }\n\n    popupData(clickState, features) {\n\n        if(features === undefined) features = this.clickedFeatures(clickState)\n\n        const items = []\n        features.forEach(function (f) {\n            for (let property of Object.keys(f)) {\n                if (isSimpleType(f[property])) {\n                    items.push({name: property, value: f[property]})\n                }\n            }\n        })\n\n        return items\n    }\n\n    get supportsWholeGenome() {\n        return false\n    }\n}\n\n\nfunction distanceToLine(x, y, ax, ay, bx, by) {\n    /*\n        Finds distance between point (x, y) and line defined by points (ax, ay) (bx, by)\n        based on http://mathworld.wolfram.com/Point-LineDistance2-Dimensional.html\n    */\n\n    const bx_minus_ax = bx - ax\n    const by_minus_ay = by - ay\n    const v = Math.abs(bx_minus_ax * (ay - y) - (ax - x) * by_minus_ay)\n    const r = Math.sqrt(bx_minus_ax * bx_minus_ax + by_minus_ay * by_minus_ay)\n\n    const distance = r > 0 ? v / r : 0\n    //console.warn('Check if', x, y, 'is within', ax, ay, bx, by, '. Distance from line: ', distance);\n\n    return distance\n}\n\nexport default GCNVTrack\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport getDataWrapper from \"../feature/dataWrapper.js\"\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport {FeatureCache, igvxhr} from \"../../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"../util/igvUtils.js\"\nimport TextFeatureSource from \"../feature/textFeatureSource.js\"\n\nclass RnaStructTrack extends TrackBase {\n\n    constructor(config, browser) {\n\n        super(config, browser)\n\n        // Set defaults\n        if (!config.height) {\n            this.height = 300\n        }\n\n        this.arcOrientation = false\n\n        this.theta = Math.PI / 2\n\n        if (\"bp\" === config.format) {\n            this.featureSource = new RNAFeatureSource(config, browser.genome)\n        } else {\n            this.featureSource = new TextFeatureSource(config, browser.genome)\n        }\n    }\n\n    async getFeatures(chr, start, end) {\n        const visibilityWindow = this.visibilityWindow\n        return this.featureSource.getFeatures({chr, start, end, visibilityWindow})\n    }\n\n    draw(options) {\n\n        const ctx = options.context\n\n        const theta = Math.PI / 2\n        const pixelWidth = options.pixelWidth\n        const pixelHeight = options.pixelHeight\n        const viewportWidth = options.viewportWidth\n        const bpPerPixel = options.bpPerPixel\n        const bpStart = options.bpStart\n        const xScale = bpPerPixel\n        const orienation = this.arcOrientation\n\n        IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n\n        const featureList = options.features\n\n        if (featureList) {\n\n            // Sort by score -- draw lowest scored features first\n            sortByScore(featureList, 1)\n\n            for (let feature of featureList) {\n\n                if (feature.startLeft) {\n\n                    let sl = Math.round((feature.startLeft - bpStart) / xScale)\n                    let sr = Math.round((feature.startRight - bpStart) / xScale)\n                    let el = Math.round((feature.endLeft - bpStart) / xScale)\n                    let er = Math.round((feature.endRight - bpStart) / xScale)\n\n                    ctx.fillStyle = feature.color\n                    ctx.strokeStyle = feature.color\n                    ctx.beginPath()\n\n                    // First arc\n                    let x1 = (sl + er) / 2\n                    let r1 = (er - sl) / 2\n                    let y1 = this.height\n                    let sa = Math.PI + (Math.PI / 2 - theta)\n                    let ea = 2 * Math.PI - (Math.PI / 2 - theta)\n\n                    if (orienation) {\n                        y1 = 0\n                        ctx.arc(x1, y1, r1, ea, sa)\n                        ctx.lineTo(er, y1)\n                    } else {\n                        ctx.arc(x1, y1, r1, sa, ea)\n                        ctx.lineTo(el, y1)\n                    }\n\n                    // Second arc\n                    const x2 = (sr + el) / 2\n                    const r2 = (el - sr) / 2\n                    const y2 = y1                        // Only for theta == pi/2\n\n                    if (orienation) {\n                        ctx.arc(x2, y2, r2, sa, ea, true)\n                        ctx.lineTo(el, y2)\n                    } else {\n                        ctx.arc(x2, y2, r2, ea, sa, true)\n                        ctx.lineTo(sl, y2)\n                    }\n\n                    ctx.stroke()\n                    ctx.fill()\n\n                    feature.drawState = {x1: x1, y1: y1, r1: r1, x2: x2, y2: y2, r2: r2, sa: sa, ea: ea}\n                } else {\n                    let s = Math.round((feature.start - bpStart) / xScale)\n                    let e = Math.round((feature.end - bpStart) / xScale)\n\n                    ctx.strokeStyle = feature.color\n\n                    ctx.beginPath()\n\n                    // First arc\n                    let x = (s + e) / 2\n                    let r = (e - s) / 2\n                    let y = this.height\n                    let sa = Math.PI + (Math.PI / 2 - theta)\n                    let ea = 2 * Math.PI - (Math.PI / 2 - theta)\n\n                    if (orienation) {\n                        y = 0\n                        ctx.arc(x, y, r, ea, sa)\n                    } else {\n                        ctx.arc(x, y, r, sa, ea)\n                    }\n\n                    ctx.stroke()\n\n                    feature.drawState = {x1: x, y1: y, r1: r, sa: sa, ea: ea}\n\n                }\n\n            }\n        }\n    }\n\n    clickedFeatures(clickState) {\n\n        const features = super.clickedFeatures(clickState)\n\n        const clicked = []\n\n        // Sort by score in descending order   (opposite order than drawn)\n        sortByScore(features, -1)\n\n        for (let f of features) {\n            const ds = f.drawState\n\n            // Distance from arc radius, or outer arc for type \".bp\"\n            const dx1 = (clickState.canvasX - ds.x1)\n            const dy1 = (clickState.canvasY - ds.y1)\n            const d1 = Math.sqrt(dx1 * dx1 + dy1 * dy1)\n            const outerLim = ds.r1 + 3\n\n\n            let d2\n            let innerLim\n            if (ds.x2 === undefined) {\n                d2 = d1\n                innerLim = ds.r1 - 3\n\n            } else {\n                const dx2 = (clickState.canvasX - ds.x2)\n                const dy2 = (clickState.canvasY - ds.y2)\n                d2 = Math.sqrt(dx2 * dx2 + dy2 * dy2)\n                innerLim = ds.r2 - 3\n            }\n\n\n            // Between outer and inner arcs, with some tolerance\n            if (d1 < outerLim && d2 > innerLim) {\n                clicked.push(f)\n                break\n            }\n        }\n        return clicked\n    }\n\n    popupData(clickState, features) {\n\n        if(features === undefined) features = this.clickedFeatures(clickState)\n\n        if (features && features.length > 0) {\n\n            return this.extractPopupData(features[0], this.getGenomeId())\n\n        }\n    }\n\n    menuItemList() {\n\n        var self = this\n\n        return [\n            {\n                name: \"Toggle arc direction\",\n                click: function () {\n                    self.arcOrientation = !self.arcOrientation\n                    self.trackView.repaintViews()\n                }\n            }\n        ]\n\n    };\n\n\n}\n\nfunction sortByScore(featureList, direction) {\n\n    featureList.sort(function (a, b) {\n        const s1 = a.score === undefined ? -Number.MAX_VALUE : a.score\n        const s2 = b.score === undefined ? -Number.MAX_VALUE : b.score\n        const t = s1 - s2\n        const d = direction === undefined ? 1 : direction\n\n        return d * (s1 - s2)\n    })\n}\n\n\nclass RNAFeatureSource {\n\n    constructor(config, genome) {\n        this.config = config\n        this.genome = genome\n    }\n\n    async getFeatures({chr, start, end, bpPerPixel, visibilityWindow}) {\n\n\n        const genome = this.genome\n\n        if (!this.featureCache) {\n\n            const options = buildOptions(this.config)\n\n            const data = await igvxhr.loadString(this.config.url, options)\n\n            this.featureCache = new FeatureCache(parseBP(data), genome)\n\n            return this.featureCache.queryFeatures(chr, start, end)\n\n        } else {\n            return this.featureCache.queryFeatures(chr, start, end)\n        }\n\n        function parseBP(data) {\n\n            if (!data) return null\n\n            const dataWrapper = getDataWrapper(data)\n\n            let header = true\n            let line\n            const colors = []\n            const descriptors = []\n            const features = []\n\n            while ((line = dataWrapper.nextLine()) !== undefined) {\n\n                const tokens = line.split('\\t')\n\n                if (header && line.startsWith(\"color:\")) {\n                    const color = \"rgb(\" + tokens[1] + \",\" + tokens[2] + \",\" + tokens[3] + \")\"\n                    colors.push(color)\n                    if (tokens.length > 4) {\n                        descriptors.push(tokens[4])\n                    }\n                    // TODO - use label\n                } else {\n                    header = false\n\n                    const chr = tokens[0]\n                    const startLeftNuc = Number.parseInt(tokens[1]) - 1\n                    const startRightNuc = Number.parseInt(tokens[2]) - 1\n                    const endLeftNuc = Number.parseInt(tokens[3])\n                    const endRightNuc = Number.parseInt(tokens[4])\n                    var colorIdx = Number.parseInt(tokens[5])\n                    const color = colors[colorIdx]\n\n\n                    let feature\n                    if (startLeftNuc <= endRightNuc) {\n                        feature = {\n                            chr: chr,\n                            startLeft: Math.min(startLeftNuc, startRightNuc),\n                            startRight: Math.max(startLeftNuc, startRightNuc),\n                            endLeft: Math.min(endLeftNuc, endRightNuc),\n                            endRight: Math.max(endLeftNuc, endRightNuc),\n                            color: color,\n                            score: colorIdx\n                        }\n                    } else {\n                        feature = {\n                            chr: chr,\n                            startLeft: Math.min(endLeftNuc, endRightNuc),\n                            startRight: Math.max(endLeftNuc, endRightNuc),\n                            endLeft: Math.min(startLeftNuc, startRightNuc),\n                            endRight: Math.max(startLeftNuc, startRightNuc),\n                            color: color,\n                            score: colorIdx\n                        }\n                    }\n\n                    feature.start = feature.startLeft\n                    feature.end = feature.endRight\n\n                    if (descriptors.length > colorIdx) {\n                        feature.description = descriptors[colorIdx]\n                    }\n\n                    features.push(feature)\n                }\n            }\n\n            return features\n        }\n    }\n}\n\nexport default RnaStructTrack","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport IGVGraphics from \"./igv-canvas.js\"\nimport {IGVColor} from \"../node_modules/igv-utils/src/index.js\"\n\n/**\n * Class represents an ideogram of a chromsome cytobands.  It is used for the header of a track panel.\n *\n */\nclass IdeogramTrack {\n    constructor(browser) {\n        this.browser = browser\n        this.type = 'ideogram'\n        this.height = 16\n        this.order = Number.MIN_SAFE_INTEGER\n        this.disableButtons = true\n        this.ignoreTrackMenu = true\n    }\n\n    async getFeatures(chr, start, end) {\n        return []\n    }\n\n    computePixelHeight(ignore) {\n        return this.height\n    }\n\n    draw({context, referenceFrame, pixelWidth, pixelHeight}) {\n\n        const chr = referenceFrame.chr\n        const chromosome = referenceFrame.genome.getChromosome(chr)\n\n        if (undefined === chromosome || pixelWidth <= 0 || pixelHeight <= 0 || 'all' === chr.toLowerCase()) {\n            return\n        }\n\n        const stainColors = []\n\n        drawIdeogram({\n            ctx: context,\n            chr,\n            referenceFrame,\n            genome: referenceFrame.genome,\n            width: pixelWidth,\n            height: pixelHeight,\n            stainColors\n        })\n\n        const widthBP = Math.round(referenceFrame.bpPerPixel * pixelWidth)\n        const xBP = referenceFrame.start\n\n        // Total chromosome length can be > chromosome.bpLength for partial fastas.\n        let chrLength = chromosome.bpLength\n        const cytobands = referenceFrame.genome.getCytobands(chr)\n        if (cytobands && cytobands.length > 0 && cytobands[cytobands.length - 1].end) {\n            chrLength = Math.max(chrLength, cytobands[cytobands.length - 1].end)\n            chromosome.bpLength = chrLength   // Correct bp length, bit of a hack\n        }\n\n        if (widthBP < chrLength) {\n\n            const percentWidth = widthBP / chrLength\n            const percentX = xBP / chrLength\n\n            let x = Math.floor(percentX * pixelWidth)\n            let ww = Math.floor(percentWidth * pixelWidth)\n\n            x = Math.max(0, x)\n            x = Math.min(pixelWidth - ww, x)\n\n            // Push current context\n            context.save()\n\n            // Draw red box\n            context.strokeStyle = \"red\"\n            context.lineWidth = (ww < 2) ? 1 : 2\n\n            const xx = x + (context.lineWidth) / 2\n            ww = (ww < 2) ? 1 : ww - context.lineWidth\n\n            const yy = context.lineWidth / 2\n            const hh = pixelHeight - context.lineWidth\n\n            context.strokeRect(xx, yy, ww, hh)\n\n            // Pop current context\n            context.restore()\n        }\n\n    }\n\n    dispose() {\n        this.trackView = undefined\n    }\n}\n\nfunction drawIdeogram({ctx, chr, referenceFrame, genome, width, height, stainColors}) {\n\n    const shim = 1\n    const shim2 = 0.5 * shim\n    const ideogramTop = 0\n\n    if (undefined === genome) {\n        return\n    }\n\n    IGVGraphics.fillRect(ctx, 0, 0, width, height, {fillStyle: IGVColor.greyScale(255)})\n\n    const cytobands = genome.getCytobands(chr)\n    if (cytobands) {\n\n        const center = (ideogramTop + height / 2)\n\n        const xC = []\n        const yC = []\n\n        if (0 === cytobands.length) {\n            return\n        }\n\n        // Get chrLength from the cytobands -- chromsome.bpLength might not work for igv-reports fasta files, which\n        // contain only a portion of the chromosome sequence\n        // *DOESNT WORK* const chrLength = referenceFrame.genome.getChromosome(chr).bpLength;\n\n        const chrLength = cytobands[cytobands.length - 1].end\n        const scale = width / chrLength\n\n        // round rect clipping path\n        ctx.beginPath()\n        IGVGraphics.roundRect(ctx, shim2, shim2 + ideogramTop, width - 2 * shim2, height - 2 * shim2, (height - 2 * shim2) / 2, 0, 1)\n        ctx.clip()\n\n        for (let i = 0; i < cytobands.length; i++) {\n\n            const cytoband = cytobands[i]\n            const start = scale * cytoband.start\n            const end = scale * cytoband.end\n\n            if (cytoband.type === 'c') {\n\n                if (cytoband.name.charAt(0) === 'p') {\n                    xC[0] = start\n                    yC[0] = height + ideogramTop\n                    xC[1] = start\n                    yC[1] = ideogramTop\n                    xC[2] = end\n                    yC[2] = center\n                } else {\n                    xC[0] = end\n                    yC[0] = height + ideogramTop\n                    xC[1] = end\n                    yC[1] = ideogramTop\n                    xC[2] = start\n                    yC[2] = center\n                }\n\n                ctx.fillStyle = \"rgb(150, 0, 0)\"\n                ctx.strokeStyle = \"rgb(150, 0, 0)\"\n                IGVGraphics.polygon(ctx, xC, yC, 1, 0)\n            } else {\n\n                ctx.fillStyle = getCytobandColor(stainColors, cytoband)\n                IGVGraphics.fillRect(ctx, start, shim + ideogramTop, (end - start), height - 2 * shim)\n            }\n        }\n    }\n\n    // round rect border\n    ctx.strokeStyle = IGVColor.greyScale(41)\n    IGVGraphics.roundRect(ctx, shim2, shim2 + ideogramTop, width - 2 * shim2, height - 2 * shim2, (height - 2 * shim2) / 2, 0, 1)\n}\n\nfunction getCytobandColor(colors, data) {\n\n    if (data.type === 'c') { // centermere: \"acen\"\n        return \"rgb(150, 10, 10)\"\n    } else {\n        var stain = data.stain // + 4;\n\n        var shade = 230\n        if (data.type === 'p') {\n            shade = Math.floor(230 - stain / 100.0 * 230)\n        }\n        var c = colors[shade]\n        if (!c) {\n            c = \"rgb(\" + shade + \",\" + shade + \",\" + shade + \")\"\n            colors[shade] = c\n        }\n        return c\n\n    }\n}\n\nexport default IdeogramTrack\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport FeatureSource from './featureSource.js'\nimport TrackBase from \"../trackBase.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\nimport {PaletteColorTable} from \"../util/colorPalletes.js\"\n\nlet JUNCTION_MOTIF_PALETTE = new PaletteColorTable(\"Dark2\")\n\n// Lock in color-to-motif mapping so it's independent of data loading order. This list may not include all possible\n// motif values as this varies depending on the RNA-seq pipeline. The current list is based on STAR v2.4 docs.\nconst someMotifValues = ['GT/AG', 'CT/AC', 'GC/AG', 'CT/GC', 'AT/AC', 'GT/AT', 'non-canonical']\nsomeMotifValues.forEach(motif => {\n    JUNCTION_MOTIF_PALETTE.getColor(motif)\n})\n\n// rendering context with values that only need to be computed once per render, rather than for each splice junction\nconst junctionRenderingContext = {}\n\nclass SpliceJunctionTrack extends TrackBase {\n\n    constructor(config, browser) {\n        super(config, browser)\n    }\n\n\n    init(config) {\n\n        super.init(config)\n\n        this.type = config.type || 'junctions'\n\n        if (config._featureSource) {\n            this.featureSource = config._featureSource\n            delete config._featureSource\n        } else {\n            this.featureSource = config.featureSource ?\n                config.featureSource :\n                FeatureSource(config, this.browser.genome)\n        }\n\n        this.margin = config.margin === undefined ? 10 : config.margin\n\n        if (!this.height) {\n            this.height = 100\n        }\n\n        //set defaults\n        if (config.colorByNumReadsThreshold === undefined) {\n            config.colorByNumReadsThreshold = 5\n        }\n    }\n\n    async postInit() {\n\n        if (typeof this.featureSource.getHeader === \"function\") {\n            this.header = await this.featureSource.getHeader()\n            if (this.disposed) return   // This track was removed during async load\n        }\n\n        // Set properties from track line\n        if (this.header) {\n            this.setTrackProperties(this.header)\n        }\n\n        if (this.visibilityWindow === undefined && typeof this.featureSource.defaultVisibilityWindow === 'function') {\n            this.visibilityWindow = await this.featureSource.defaultVisibilityWindow()\n        }\n\n        return this\n\n    }\n\n    get supportsWholeGenome() {\n        return false\n    }\n\n    async getFeatures(chr, start, end, bpPerPixel) {\n        const visibilityWindow = this.visibilityWindow\n        return this.featureSource.getFeatures({chr, start, end, bpPerPixel, visibilityWindow})\n    };\n\n\n    /**\n     * The required height in pixels required for the track content.   This is not the visible track height, which\n     * can be smaller (with a scrollbar) or larger.\n     *\n     * @param features\n     * @returns {*}\n     */\n    computePixelHeight(features) {\n        return this.height\n    };\n\n    draw(options) {\n\n        const featureList = options.features\n        const ctx = options.context\n        const bpPerPixel = options.bpPerPixel\n        const bpStart = options.bpStart\n        const pixelWidth = options.pixelWidth\n        const pixelHeight = options.pixelHeight\n        const bpEnd = bpStart + pixelWidth * bpPerPixel + 1\n\n\n        if (!this.config.isMergedTrack) {\n            IGVGraphics.fillRect(ctx, 0, options.pixelTop, pixelWidth, pixelHeight, {'fillStyle': \"rgb(255, 255, 255)\"})\n        }\n\n        if (featureList) {\n\n\n            junctionRenderingContext.referenceFrame = options.viewport.referenceFrame\n            junctionRenderingContext.referenceFrameStart = junctionRenderingContext.referenceFrame.start\n            junctionRenderingContext.referenceFrameEnd = junctionRenderingContext.referenceFrameStart +\n                junctionRenderingContext.referenceFrame.toBP(options.viewport.getWidth())\n\n            // For a given viewport, records where features that are < 2px in width have been rendered already.\n            // This prevents wasteful rendering of multiple such features onto the same pixels.\n            junctionRenderingContext.featureZoomOutTracker = {}\n\n            for (let feature of featureList) {\n                if (feature.end < bpStart) continue\n                if (feature.start > bpEnd) break\n                this.renderJunction(feature, bpStart, bpPerPixel, pixelHeight, ctx)\n            }\n\n        } else {\n            console.log(\"No feature list\")\n        }\n\n    };\n\n    /**\n     *\n     * @param feature\n     * @param bpStart  genomic location of the left edge of the current canvas\n     * @param xScale  scale in base-pairs per pixel\n     * @param pixelHeight  pixel height of the current canvas\n     * @param ctx  the canvas 2d context\n     */\n    renderJunction(feature, bpStart, xScale, pixelHeight, ctx) {\n        // cache whether this junction is rendered or filtered out. Use later to exclude non-rendered junctions from click detection.\n        feature.isVisible = false\n\n        const junctionLeftPx = Math.round((feature.start - bpStart) / xScale)\n        const junctionRightPx = Math.round((feature.end - bpStart) / xScale)\n        const junctionMiddlePx = (junctionLeftPx + junctionRightPx) / 2\n        if (junctionRightPx - junctionLeftPx <= 3) {\n            if (junctionMiddlePx in junctionRenderingContext.featureZoomOutTracker) {\n                return\n            }\n            junctionRenderingContext.featureZoomOutTracker[junctionMiddlePx] = true\n        }\n\n        // TODO: cache filter and pixel calculations by doing them earlier when features are initially parsed?\n        if (this.config.hideAnnotatedJunctions && feature.attributes.annotated_junction === \"true\") {\n            return\n        }\n        if (this.config.hideUnannotatedJunctions && feature.attributes.annotated_junction === \"false\") {\n            return\n        }\n        if (this.config.hideMotifs && this.config.hideMotifs.includes(feature.attributes.motif)) {\n            return\n        }\n        if (this.config.hideStrand === feature.strand) {\n            return\n        }\n\n        // check if splice junction is inside viewport\n        if (this.config.minJunctionEndsVisible) {\n            let numJunctionEndsVisible = 0\n            if (feature.start >= junctionRenderingContext.referenceFrameStart && feature.start <= junctionRenderingContext.referenceFrameEnd) {\n                numJunctionEndsVisible += 1\n            }\n            if (feature.end >= junctionRenderingContext.referenceFrameStart && feature.end <= junctionRenderingContext.referenceFrameEnd) {\n                numJunctionEndsVisible += 1\n            }\n            if (numJunctionEndsVisible < this.config.minJunctionEndsVisible) {\n                return\n            }\n        }\n\n        let uniquelyMappedReadCount\n        let multiMappedReadCount\n        let totalReadCount\n        if (feature.attributes.uniquely_mapped) {\n            uniquelyMappedReadCount = parseInt(feature.attributes.uniquely_mapped)\n            if (uniquelyMappedReadCount < this.config.minUniquelyMappedReads) {\n                return\n            }\n            multiMappedReadCount = parseInt(feature.attributes.multi_mapped)\n            totalReadCount = uniquelyMappedReadCount + multiMappedReadCount\n            if (totalReadCount < this.config.minTotalReads) {\n                return\n            }\n            if (totalReadCount > 0 && multiMappedReadCount / totalReadCount > this.config.maxFractionMultiMappedReads) {\n                return\n            }\n            if (feature.attributes.maximum_spliced_alignment_overhang && parseInt(feature.attributes.maximum_spliced_alignment_overhang) < this.config.minSplicedAlignmentOverhang) {\n                return\n            }\n        }\n\n        let numSamplesWithThisJunction\n        if (feature.attributes.num_samples_with_this_junction) {\n            numSamplesWithThisJunction = parseInt(feature.attributes.num_samples_with_this_junction)\n            if (this.config.minSamplesWithThisJunction && numSamplesWithThisJunction < this.config.minSamplesWithThisJunction) {\n                return\n            }\n            if (this.config.maxSamplesWithThisJunction && numSamplesWithThisJunction > this.config.maxSamplesWithThisJunction) {\n                return\n            }\n            if (feature.attributes.num_samples_total) {\n                feature.attributes.percent_samples_with_this_junction = 100 * numSamplesWithThisJunction / Number(feature.attributes.num_samples_total)\n                if (this.config.minPercentSamplesWithThisJunction) {\n                    if (feature.attributes.percent_samples_with_this_junction < this.config.minPercentSamplesWithThisJunction ||\n                        feature.attributes.percent_samples_with_this_junction > this.config.maxPercentSamplesWithThisJunction) {\n                        return\n                    }\n                }\n            }\n        }\n\n        const py = this.margin\n        const rowHeight = this.height\n\n        const cy = py + 0.5 * rowHeight\n        let topY = py\n        const bottomY = py + rowHeight\n        const bezierBottomY = bottomY - 10\n\n        // draw the junction arc\n        const bezierControlLeftPx = (junctionLeftPx + junctionMiddlePx) / 2\n        const bezierControlRightPx = (junctionMiddlePx + junctionRightPx) / 2\n\n        let lineWidth = 1\n        if (feature.attributes.line_width) {\n            lineWidth = Number(feature.attributes.line_width)\n        } else {\n            if (this.config.thicknessBasedOn === undefined || this.config.thicknessBasedOn === 'numUniqueReads') {\n                lineWidth = uniquelyMappedReadCount\n            } else if (this.config.thicknessBasedOn === 'numReads') {\n                lineWidth = totalReadCount\n            } else if (this.config.thicknessBasedOn === 'numSamplesWithThisJunction') {\n                if (numSamplesWithThisJunction !== undefined) {\n                    lineWidth = numSamplesWithThisJunction\n                }\n            }\n            lineWidth = 1 + Math.log(lineWidth + 1) / Math.log(12)\n        }\n\n        let bounceHeight\n        if (this.config.bounceHeightBasedOn === undefined || this.config.bounceHeightBasedOn === 'random') {\n            // randomly but deterministically stagger topY coordinates to reduce overlap\n            bounceHeight = (feature.start + feature.end) % 7\n        } else if (this.config.bounceHeightBasedOn === 'distance') {\n            bounceHeight = 6 * (feature.end - feature.start) / (junctionRenderingContext.referenceFrameEnd - junctionRenderingContext.referenceFrameStart)\n        } else if (this.config.bounceHeightBasedOn === 'thickness') {\n            bounceHeight = 2 * lineWidth\n        }\n        topY += rowHeight * Math.max(7 - bounceHeight, 0) / 10\n\n        let color\n        if (feature.attributes.color) {\n            color = feature.attributes.color  // Explicit setting\n        } else if (this.config.colorBy === undefined || this.config.colorBy === 'numUniqueReads') {\n            color = uniquelyMappedReadCount > this.config.colorByNumReadsThreshold ? 'blue' : '#AAAAAA'  // color gradient?\n        } else if (this.config.colorBy === 'numReads') {\n            color = totalReadCount > this.config.colorByNumReadsThreshold ? 'blue' : '#AAAAAA'\n        } else if (this.config.colorBy === 'isAnnotatedJunction') {\n            color = feature.attributes.annotated_junction === \"true\" ? '#b0b0ec' : 'orange'\n        } else if (this.config.colorBy === 'strand') {\n            color = feature.strand === \"+\" ? '#b0b0ec' : '#ecb0b0'\n        } else if (this.config.colorBy === 'motif') {\n            color = JUNCTION_MOTIF_PALETTE.getColor(feature.attributes.motif)\n        } else {\n            color = '#AAAAAA'\n        }\n\n        let label = \"\"\n        if (feature.attributes.label) {\n            label = feature.attributes.label.replace(/_/g, \" \")\n        } else if (this.config.labelWith === undefined || this.config.labelWith === 'uniqueReadCount') {\n            //default label\n            label = uniquelyMappedReadCount\n        } else if (this.config.labelWith === 'totalReadCount') {\n            label = totalReadCount\n        } else if (this.config.labelWith === 'numSamplesWithThisJunction') {\n            if (numSamplesWithThisJunction !== undefined) {\n                label = numSamplesWithThisJunction\n            }\n        } else if (this.config.labelWith === 'percentSamplesWithThisJunction') {\n            if (feature.attributes.percent_samples_with_this_junction !== undefined) {\n                label = feature.attributes.percent_samples_with_this_junction.toFixed(0) + '%'\n            }\n        } else if (this.config.labelWith === 'motif') {\n            if (feature.attributes.motif !== undefined) {\n                label += feature.attributes.motif\n            }\n        }\n\n        if (this.config.labelWithInParen === 'uniqueReadCount') {\n            label += ' (' + uniquelyMappedReadCount + ')'\n        } else if (this.config.labelWithInParen === 'totalReadCount') {\n            label += ' (' + totalReadCount + ')'\n        } else if (this.config.labelWithInParen === 'multiMappedReadCount') {\n            if (multiMappedReadCount > 0) {\n                label += ' (+' + multiMappedReadCount + ')'\n            }\n        } else if (this.config.labelWithInParen === 'numSamplesWithThisJunction') {\n            if (numSamplesWithThisJunction !== undefined) {\n                label += ' (' + numSamplesWithThisJunction + ')'\n            }\n        } else if (this.config.labelWithInParen === 'percentSamplesWithThisJunction') {\n            if (feature.attributes.percent_samples_with_this_junction !== undefined) {\n                label += ' (' + feature.attributes.percent_samples_with_this_junction.toFixed(0) + '%)'\n            }\n        } else if (this.config.labelWithInParen === 'motif') {\n            if (feature.attributes.motif !== undefined) {\n                label += ` ${feature.attributes.motif}`\n            }\n        }\n\n        // data source: STAR splice junctions (eg. SJ.out.tab file converted to bed).\n        // .bed \"name\" field used to store unique + multi-mapped read counts, so:\n        // feature.score:  unique spanning read counts\n        // feature.name:   unique + multi-mapped spanning read counts\n        //example feature:  { chr: \"chr17\", start: 39662344, end: 39662803, name: \"59\", row: 0, score: 38, strand: \"+\"}\n        feature.isVisible = true\n        ctx.beginPath()\n        ctx.moveTo(junctionLeftPx, bezierBottomY)\n        ctx.bezierCurveTo(bezierControlLeftPx, topY, bezierControlRightPx, topY, junctionRightPx, bezierBottomY)\n\n        ctx.lineWidth = lineWidth\n        ctx.strokeStyle = color\n        ctx.stroke()\n\n        const drawArrowhead = (ctx, x, y, size) => {\n            //TODO draw better arrow heads: https://stackoverflow.com/questions/21052972/curved-thick-arrows-on-canvas\n            ctx.beginPath()\n            ctx.moveTo(x, y)\n            ctx.lineTo(x - size / 2, y - size)\n            ctx.lineTo(x + size / 2, y - size)\n            ctx.lineTo(x, y)\n            ctx.closePath()\n            ctx.fill()\n        }\n\n        if (feature.attributes.left_shape || feature.attributes.right_shape) {\n            ctx.fillStyle = color\n            const arrowSize = ctx.lineWidth > 2 ? 10 : 7\n            if (feature.attributes.left_shape) {\n                drawArrowhead(ctx, junctionLeftPx, bezierBottomY, arrowSize)\n            }\n            if (feature.attributes.right_shape) {\n                drawArrowhead(ctx, junctionRightPx, bezierBottomY, arrowSize)\n            }\n        }\n\n        ctx.fillText(label, junctionMiddlePx - ctx.measureText(label).width / 2, (7 * topY + cy) / 8)\n    }\n\n    clickedFeatures(clickState) {\n\n        const allFeatures = super.clickedFeatures(clickState)\n\n        return allFeatures.filter(function (feature) {\n            return (feature.isVisible && feature.attributes)\n        })\n    }\n\n    /**\n     * Return \"popup data\" for feature @ genomic location.  Data is an array of key-value pairs\n     */\n    popupData(clickState, features) {\n\n        if (features === undefined) features = this.clickedFeatures(clickState)\n        const genomicLocation = clickState.genomicLocation\n\n        const data = []\n        for (let feature of features) {\n\n            const featureData = (typeof feature.popupData === \"function\") ?\n                feature.popupData(genomicLocation) :\n                this.extractPopupData(feature._f || feature, this.getGenomeId())\n\n            if (featureData) {\n                if (data.length > 0) {\n                    data.push(\"<hr/><hr/>\")\n                }\n\n                Array.prototype.push.apply(data, featureData)\n            }\n        }\n\n        return data\n    }\n\n    /**\n     * Called when the track is removed.  Do any needed cleanup here\n     */\n    dispose() {\n        this.trackView = undefined\n    }\n}\n\nexport default SpliceJunctionTrack\n","class RemoteFile {\n\n    constructor(args) {\n        this.config = args;\n        this.url = mapUrl(args.path || args.url);\n    }\n\n\n    async read(position, length) {\n\n        //console.log(`${position} - ${position + length} (${length})`)\n\n        const headers = this.config.headers || {};\n\n        if (position !== undefined && length) {\n            const rangeString = \"bytes=\" + position + \"-\" + (position + length - 1);\n            headers['Range'] = rangeString;\n        }\n\n        let url = this.url.slice();    // slice => copy\n        if (this.config.oauthToken) {\n            const token = resolveToken(this.config.oauthToken);\n            headers['Authorization'] = `Bearer ${token}`;\n        }\n\n        if (this.config.apiKey) {\n            url = addParameter(url, \"key\", this.config.apiKey);\n        }\n\n        const response = await fetch(url, {\n            method: 'GET',\n            headers: headers,\n            redirect: 'follow',\n            mode: 'cors',\n        });\n\n        const status = response.status;\n\n        if (status >= 400) {\n            const err = Error(response.statusText);\n            err.code = status;\n            throw err\n        } else {\n            return response.arrayBuffer()\n        }\n\n        /**\n         * token can be a string, a function that returns a string, or a function that returns a Promise for a string\n         * @param token\n         * @returns {Promise<*>}\n         */\n        async function resolveToken(token) {\n            if (typeof token === 'function') {\n                return await Promise.resolve(token())    // Normalize the result to a promise, since we don't know what the function returns\n            } else {\n                return token\n            }\n        }\n\n    }\n}\n\n\nfunction mapUrl(url) {\n\n    if (url.includes(\"//www.dropbox.com\")) {\n        return url.replace(\"//www.dropbox.com\", \"//dl.dropboxusercontent.com\")\n    } else if (url.startsWith(\"ftp://ftp.ncbi.nlm.nih.gov\")) {\n        return url.replace(\"ftp://\", \"https://\")\n    } else {\n        return url\n    }\n}\n\n\nfunction addParameter(url, name, value) {\n    const paramSeparator = url.includes(\"?\") ? \"&\" : \"?\";\n    return url + paramSeparator + name + \"=\" + value\n}\n\nclass BufferedFile {\n\n    constructor(args) {\n        this.file = args.file;\n        this.fetchSize = args.fetchSize || 16000;\n        this.maxSize = args.maxSize || 1000000;\n        this.buffers = [];\n    }\n\n    async read(position, length) {\n\n\n        let overlappingBuffers = this.buffers.filter( b => b.overlaps(position, position + length));\n\n        // See if any buffers completely contain request, if so we're done\n        for(let buffer of overlappingBuffers) {\n            if(buffer.contains(position, position + length)) {\n              return buffer.slice(position, position + length)\n            }\n        }\n\n\n        if(overlappingBuffers.length === 0) {\n\n            // No overlap with any existing buffer\n            let size = Math.max(length, this.fetchSize);\n\n            // Find index of first buffer to the right, if any, to potentially limit size\n            this.buffers.sort((a, b) => a.start - b.start);\n            const idx = binarySearch(this.buffers, (b) => b.start > position, 0);\n            if(idx < this.buffers.length) {\n                size = Math.min(size, this.buffers[idx].start - position);\n            }\n\n            const bufferStart = position;\n            const bufferData = await this.file.read(bufferStart, size);\n            const buffer = new Buffer(bufferStart, bufferData);\n            this.addBuffer(buffer);\n\n            return buffer.slice(position, position + length)\n        } else {\n\n            // console.log(\"Cache hit\")\n            // Some overlap.   Fill gaps\n            overlappingBuffers.sort((a, b) => a.start - b.start);\n            const allBuffers = [];\n            let currentEnd = position;\n            for (let ob of overlappingBuffers) {\n                if (currentEnd < ob.start) {\n                    const bufferStart = currentEnd;\n                    const bufferSize = ob.start - currentEnd;\n                    const bufferData = await this.file.read(bufferStart, bufferSize);\n                    const buffer = new Buffer(bufferStart, bufferData);\n                    allBuffers.push(buffer);\n                }\n                allBuffers.push(ob);\n                currentEnd = ob.end;\n            }\n\n            // Check end\n            const requestedEnd = position + length;\n            if (requestedEnd > currentEnd) {\n                const bufferStart = currentEnd;\n                const bufferSize = requestedEnd - bufferStart;\n                const bufferData = await this.file.read(bufferStart, bufferSize);\n                const buffer = new Buffer(bufferStart, bufferData);\n                allBuffers.push(buffer);\n            }\n\n            const newStart = allBuffers[0].start;\n            const newArrayBuffer = concatArrayBuffers(allBuffers.map(b => b.buffer));\n            const newBuffer = new Buffer(newStart, newArrayBuffer);\n\n            // Replace the overlapping buffers with the new composite one\n            const tmp = new Set(overlappingBuffers);\n            this.buffers = this.buffers.filter(b => !tmp.has(b));\n            this.addBuffer(newBuffer);\n\n            return newBuffer.slice(position, position + length)\n        }\n\n    }\n\n    addBuffer(buffer) {\n\n        const size = this.buffers.reduce((a,b) => a + b.size, 0) + buffer.size;\n        if(size > this.maxSize) {\n            // console.log(`max buffer size exceeded`)\n            const overage = size - this.maxSize;\n            this.buffers.sort((a,b) => a.creationTime - b.creationTime);\n            let sum = 0;\n            let i;\n            for(i=0; i<this.buffers.length; i++) {\n                sum += this.buffers[i].size;\n                if(sum > overage) {\n                    break\n                }\n            }\n            // console.log('removing buffers')\n            // for(let j=0; j<i; j++) console.log(`  ${this.buffers[j].toString()}`)\n            this.buffers = (i < this.buffers.length - 1)  ? this.buffers.slice(i)  : [];\n        }\n\n        if(buffer.size <= this.maxSize) {\n            this.buffers.push(buffer);\n        }\n    }\n\n\n\n}\n\nclass Buffer {\n\n    constructor(bufferStart, buffer) {\n        this.creationTime = Date.now();\n        this.start = bufferStart;\n        this.buffer = buffer;\n    }\n\n    slice(start, end) {\n        if(start < this.start || end - start > this.buffer.byteLength) {\n            throw Error(\"buffer bounds error\")\n        }\n        return this.buffer.slice(start - this.start, end - this.start)\n    }\n\n    get end() {\n        return this.start + this.buffer.byteLength\n    }\n\n    get size() {\n        return this.buffer.byteLength\n    }\n\n    contains(start, end) {\n        return start >= this.start && end <= this.end\n    }\n\n    overlaps(start, end) {\n        return (start > this.start && start < this.end) || (end > this.start && end < this.end)\n    }\n\n    toString() {\n        return `Buffer ${this.creationTime}   ${this.start} - ${this.end}`\n    }\n\n}\n\n/**\n * concatenates 2 array buffers.\n * Credit: https://gist.github.com/72lions/4528834\n *\n * @private\n * @param {ArrayBuffers} buffer1 The first buffer.\n * @param {ArrayBuffers} buffer2 The second buffer.\n * @return {ArrayBuffers} The new ArrayBuffer created out of the two.\n */\nfunction concatArrayBuffers(buffers) {\n    const size = buffers.reduce((a,b) => a + b.byteLength, 0);\n    const tmp = new Uint8Array(size);\n    let offset = 0;\n    for(let b of buffers) {\n        tmp.set(new Uint8Array(b), offset);\n        offset += b.byteLength;\n    }\n    return tmp.buffer\n}\n\n/**\n * Return 0 <= i <= array.length such that !pred(array[i - 1]) && pred(array[i]).\n *\n * returns an index 0 ≤ i ≤ array.length such that the given predicate is false for array[i - 1] and true for array[i]* *\n */\nfunction binarySearch(array, pred, min) {\n    let lo = min - 1, hi = array.length;\n    while (1 + lo < hi) {\n        const mi = lo + ((hi - lo) >> 1);\n        if (pred(array[mi])) {\n            hi = mi;\n        } else {\n            lo = mi;\n        }\n    }\n    return hi\n}\n\nclass BlobFile {\n\n    constructor(blob) {\n        this.file = blob;\n    }\n\n    async read(position, length) {\n\n        if(length === 0) {\n            return new ArrayBuffer()\n        }\n\n        const blob = (position != undefined && length) ?\n            this.file.slice(position, position + length) :\n            this.file;\n\n        return blob.arrayBuffer()\n    }\n}\n\n// esm/core.js\nasync function _unpack_struct_from_async(structure, async_buf, offset = 0) {\n  var output = /* @__PURE__ */ new Map();\n  for (let [key, fmt] of structure.entries()) {\n    let value = await struct.unpack_from_async(\"<\" + fmt, async_buf, offset);\n    offset += struct.calcsize(fmt);\n    if (value.length == 1) {\n      value = value[0];\n    }\n    output.set(key, value);\n  }\n  return output;\n}\nfunction _unpack_struct_from(structure, buf, offset = 0) {\n  var output = /* @__PURE__ */ new Map();\n  for (let [key, fmt] of structure.entries()) {\n    let value = struct.unpack_from(\"<\" + fmt, buf, offset);\n    offset += struct.calcsize(fmt);\n    if (value.length == 1) {\n      value = value[0];\n    }\n    output.set(key, value);\n  }\n  return output;\n}\nfunction assert(thing) {\n  if (!thing) {\n    thing();\n  }\n}\nfunction _structure_size(structure) {\n  var fmt = \"<\" + Array.from(structure.values()).join(\"\");\n  return struct.calcsize(fmt);\n}\nfunction _padded_size(size, padding_multiple = 8) {\n  return Math.ceil(size / padding_multiple) * padding_multiple;\n}\nvar dtype_to_format = {\n  \"u\": \"Uint\",\n  \"i\": \"Int\",\n  \"f\": \"Float\"\n};\nfunction dtype_getter(dtype_str) {\n  var big_endian = struct._is_big_endian(dtype_str);\n  var getter, nbytes;\n  if (/S/.test(dtype_str)) {\n    getter = \"getString\";\n    nbytes = ((dtype_str.match(/S(\\d*)/) || [])[1] || 1) | 0;\n  } else {\n    let [_, fstr, bytestr] = dtype_str.match(/[<>=!@]?(i|u|f)(\\d*)/);\n    nbytes = parseInt(bytestr || 4, 10);\n    let nbits = nbytes * 8;\n    getter = \"get\" + dtype_to_format[fstr] + nbits.toFixed();\n  }\n  return [getter, big_endian, nbytes];\n}\nvar Struct = class {\n  constructor() {\n    this.big_endian = isBigEndian();\n    this.getters = {\n      \"s\": \"getUint8\",\n      \"b\": \"getInt8\",\n      \"B\": \"getUint8\",\n      \"h\": \"getInt16\",\n      \"H\": \"getUint16\",\n      \"i\": \"getInt32\",\n      \"I\": \"getUint32\",\n      \"l\": \"getInt32\",\n      \"L\": \"getUint32\",\n      \"q\": \"getInt64\",\n      \"Q\": \"getUint64\",\n      \"f\": \"getFloat32\",\n      \"d\": \"getFloat64\"\n    };\n    this.byte_lengths = {\n      \"s\": 1,\n      \"b\": 1,\n      \"B\": 1,\n      \"h\": 2,\n      \"H\": 2,\n      \"i\": 4,\n      \"I\": 4,\n      \"l\": 4,\n      \"L\": 4,\n      \"q\": 8,\n      \"Q\": 8,\n      \"f\": 4,\n      \"d\": 8\n    };\n    let all_formats = Object.keys(this.byte_lengths).join(\"\");\n    this.fmt_size_regex = \"(\\\\d*)([\" + all_formats + \"])\";\n  }\n  calcsize(fmt) {\n    var size = 0;\n    var match;\n    var regex = new RegExp(this.fmt_size_regex, \"g\");\n    while ((match = regex.exec(fmt)) !== null) {\n      let n = parseInt(match[1] || 1, 10);\n      let f = match[2];\n      let subsize = this.byte_lengths[f];\n      size += n * subsize;\n    }\n    return size;\n  }\n  _is_big_endian(fmt) {\n    var big_endian;\n    if (/^</.test(fmt)) {\n      big_endian = false;\n    } else if (/^(!|>)/.test(fmt)) {\n      big_endian = true;\n    } else {\n      big_endian = this.big_endian;\n    }\n    return big_endian;\n  }\n  async unpack_from_async(fmt, async_buf, offset) {\n    var offset = Number(offset || 0);\n    const total_size = this.calcsize(fmt);\n    const local_buffer = await async_buf.slice(offset, offset + total_size);\n    let local_offset = 0;\n    var view = new DataView64(local_buffer);\n    var output = [];\n    var big_endian = this._is_big_endian(fmt);\n    var match;\n    var regex = new RegExp(this.fmt_size_regex, \"g\");\n    while ((match = regex.exec(fmt)) !== null) {\n      let n = parseInt(match[1] || 1, 10);\n      let f = match[2];\n      let getter = this.getters[f];\n      let size = this.byte_lengths[f];\n      if (f == \"s\") {\n        output.push(new TextDecoder().decode(local_buffer.slice(local_offset, local_offset + n)));\n        local_offset += n;\n      } else {\n        for (var i = 0; i < n; i++) {\n          output.push(view[getter](local_offset, !big_endian));\n          local_offset += size;\n        }\n      }\n    }\n    return output;\n  }\n  unpack_from(fmt, buffer, offset) {\n    var offset = Number(offset || 0);\n    const total_size = this.calcsize(fmt);\n    const local_buffer = buffer.slice(offset, offset + total_size);\n    let local_offset = 0;\n    var view = new DataView64(local_buffer);\n    var output = [];\n    var big_endian = this._is_big_endian(fmt);\n    var match;\n    var regex = new RegExp(this.fmt_size_regex, \"g\");\n    while ((match = regex.exec(fmt)) !== null) {\n      let n = parseInt(match[1] || 1, 10);\n      let f = match[2];\n      let getter = this.getters[f];\n      let size = this.byte_lengths[f];\n      if (f == \"s\") {\n        output.push(new TextDecoder().decode(local_buffer.slice(local_offset, local_offset + n)));\n        local_offset += n;\n      } else {\n        for (var i = 0; i < n; i++) {\n          output.push(view[getter](local_offset, !big_endian));\n          local_offset += size;\n        }\n      }\n    }\n    return output;\n  }\n};\nvar struct = new Struct();\nfunction isBigEndian() {\n  const array = new Uint8Array(4);\n  const view = new Uint32Array(array.buffer);\n  return !((view[0] = 1) & array[0]);\n}\nvar DataView64 = class extends DataView {\n  getUint64(byteOffset, littleEndian) {\n    const left = BigInt(this.getUint32(byteOffset, littleEndian));\n    const right = BigInt(this.getUint32(byteOffset + 4, littleEndian));\n    let combined = littleEndian ? left + (right << 32n) : (left << 32n) + right;\n    return Number(combined);\n  }\n  getInt64(byteOffset, littleEndian) {\n    var low, high;\n    if (littleEndian) {\n      low = this.getUint32(byteOffset, true);\n      high = this.getInt32(byteOffset + 4, true);\n    } else {\n      high = this.getInt32(byteOffset, false);\n      low = this.getUint32(byteOffset + 4, false);\n    }\n    let combined = BigInt(low) + (BigInt(high) << 32n);\n    return Number(combined);\n  }\n  getString(byteOffset, littleEndian, length) {\n    const str_buffer = this.buffer.slice(byteOffset, byteOffset + length);\n    const decoder = new TextDecoder();\n    return decoder.decode(str_buffer);\n  }\n  getVLENStruct(byteOffset, littleEndian, length) {\n    let item_size = this.getUint32(byteOffset, littleEndian);\n    let collection_address = this.getUint64(byteOffset + 4, littleEndian);\n    let object_index = this.getUint32(byteOffset + 12, littleEndian);\n    return [item_size, collection_address, object_index];\n  }\n};\nfunction bitSize(integer) {\n  return integer.toString(2).length;\n}\nfunction _unpack_integer(nbytes, buf, offset = 0, littleEndian = true) {\n  const local_buffer = buf.slice(offset, offset + nbytes);\n  let bytes = new Uint8Array(local_buffer);\n  if (!littleEndian) {\n    bytes.reverse();\n  }\n  let integer = bytes.reduce((accumulator, currentValue, index) => accumulator + (currentValue << index * 8), 0);\n  return integer;\n}\n\n// esm/datatype-msg.js\nvar DatatypeMessage = class {\n  constructor(buf, offset) {\n    this.buf = buf;\n    this.offset = offset;\n    this.dtype = this.determine_dtype();\n  }\n  async determine_dtype() {\n    let datatype_msg = await _unpack_struct_from_async(DATATYPE_MSG, this.buf, this.offset);\n    this.offset += DATATYPE_MSG_SIZE;\n    let datatype_class = datatype_msg.get(\"class_and_version\") & 15;\n    if (datatype_class == DATATYPE_FIXED_POINT) {\n      return this._determine_dtype_fixed_point(datatype_msg);\n    } else if (datatype_class == DATATYPE_FLOATING_POINT) {\n      return this._determine_dtype_floating_point(datatype_msg);\n    } else if (datatype_class == DATATYPE_TIME) {\n      throw \"Time datatype class not supported.\";\n    } else if (datatype_class == DATATYPE_STRING) {\n      return this._determine_dtype_string(datatype_msg);\n    } else if (datatype_class == DATATYPE_BITFIELD) {\n      throw \"Bitfield datatype class not supported.\";\n    } else if (datatype_class == DATATYPE_OPAQUE) {\n      return {\n        datatype_class: DATATYPE_OPAQUE,\n        size: datatype_msg.get(\"size\")\n      };\n    } else if (datatype_class == DATATYPE_COMPOUND) {\n      return this._determine_dtype_compound(datatype_msg);\n    } else if (datatype_class == DATATYPE_REFERENCE) {\n      return [\"REFERENCE\", datatype_msg.get(\"size\")];\n    } else if (datatype_class == DATATYPE_ENUMERATED) {\n      return this.determine_dtype();\n    } else if (datatype_class == DATATYPE_ARRAY) {\n      throw \"Array datatype class not supported.\";\n    } else if (datatype_class == DATATYPE_VARIABLE_LENGTH) {\n      let vlen_type = this._determine_dtype_vlen(datatype_msg);\n      if (vlen_type[0] == \"VLEN_SEQUENCE\") {\n        let base_type = this.determine_dtype();\n        vlen_type = [\"VLEN_SEQUENCE\", base_type];\n      }\n      return vlen_type;\n    } else {\n      throw \"Invalid datatype class \" + datatype_class;\n    }\n  }\n  _determine_dtype_fixed_point(datatype_msg) {\n    let length_in_bytes = datatype_msg.get(\"size\");\n    if (![1, 2, 4, 8].includes(length_in_bytes)) {\n      throw \"Unsupported datatype size\";\n    }\n    let signed = datatype_msg.get(\"class_bit_field_0\") & 8;\n    var dtype_char;\n    if (signed > 0) {\n      dtype_char = \"i\";\n    } else {\n      dtype_char = \"u\";\n    }\n    let byte_order = datatype_msg.get(\"class_bit_field_0\") & 1;\n    var byte_order_char;\n    if (byte_order == 0) {\n      byte_order_char = \"<\";\n    } else {\n      byte_order_char = \">\";\n    }\n    this.offset += 4;\n    return byte_order_char + dtype_char + length_in_bytes.toFixed();\n  }\n  _determine_dtype_floating_point(datatype_msg) {\n    let length_in_bytes = datatype_msg.get(\"size\");\n    if (![1, 2, 4, 8].includes(length_in_bytes)) {\n      throw \"Unsupported datatype size\";\n    }\n    let dtype_char = \"f\";\n    let byte_order = datatype_msg.get(\"class_bit_field_0\") & 1;\n    var byte_order_char;\n    if (byte_order == 0) {\n      byte_order_char = \"<\";\n    } else {\n      byte_order_char = \">\";\n    }\n    this.offset += 12;\n    return byte_order_char + dtype_char + length_in_bytes.toFixed();\n  }\n  _determine_dtype_string(datatype_msg) {\n    return \"S\" + datatype_msg.get(\"size\").toFixed();\n  }\n  _determine_dtype_vlen(datatype_msg) {\n    let vlen_type = datatype_msg.get(\"class_bit_field_0\") & 1;\n    if (vlen_type != 1) {\n      return [\"VLEN_SEQUENCE\", 0, 0];\n    }\n    let padding_type = datatype_msg.get(\"class_bit_field_0\") >> 4;\n    let character_set = datatype_msg.get(\"class_bit_field_1\") & 1;\n    return [\"VLEN_STRING\", padding_type, character_set];\n  }\n  _determine_dtype_compound(datatype_msg) {\n    throw \"Compound type not yet implemented!\";\n  }\n};\nvar DATATYPE_MSG = /* @__PURE__ */ new Map([\n  [\"class_and_version\", \"B\"],\n  [\"class_bit_field_0\", \"B\"],\n  [\"class_bit_field_1\", \"B\"],\n  [\"class_bit_field_2\", \"B\"],\n  [\"size\", \"I\"]\n]);\nvar DATATYPE_MSG_SIZE = _structure_size(DATATYPE_MSG);\nvar COMPOUND_PROP_DESC_V1 = /* @__PURE__ */ new Map([\n  [\"offset\", \"I\"],\n  [\"dimensionality\", \"B\"],\n  [\"reserved_0\", \"B\"],\n  [\"reserved_1\", \"B\"],\n  [\"reserved_2\", \"B\"],\n  [\"permutation\", \"I\"],\n  [\"reserved_3\", \"I\"],\n  [\"dim_size_1\", \"I\"],\n  [\"dim_size_2\", \"I\"],\n  [\"dim_size_3\", \"I\"],\n  [\"dim_size_4\", \"I\"]\n]);\n_structure_size(COMPOUND_PROP_DESC_V1);\nvar DATATYPE_FIXED_POINT = 0;\nvar DATATYPE_FLOATING_POINT = 1;\nvar DATATYPE_TIME = 2;\nvar DATATYPE_STRING = 3;\nvar DATATYPE_BITFIELD = 4;\nvar DATATYPE_OPAQUE = 5;\nvar DATATYPE_COMPOUND = 6;\nvar DATATYPE_REFERENCE = 7;\nvar DATATYPE_ENUMERATED = 8;\nvar DATATYPE_VARIABLE_LENGTH = 9;\nvar DATATYPE_ARRAY = 10;\nfunction zero$1(buf) {\n  let len = buf.length;\n  while (--len >= 0) {\n    buf[len] = 0;\n  }\n}\nvar MIN_MATCH$1 = 3;\nvar MAX_MATCH$1 = 258;\nvar LENGTH_CODES$1 = 29;\nvar LITERALS$1 = 256;\nvar L_CODES$1 = LITERALS$1 + 1 + LENGTH_CODES$1;\nvar D_CODES$1 = 30;\nvar DIST_CODE_LEN = 512;\nvar static_ltree = new Array((L_CODES$1 + 2) * 2);\nzero$1(static_ltree);\nvar static_dtree = new Array(D_CODES$1 * 2);\nzero$1(static_dtree);\nvar _dist_code = new Array(DIST_CODE_LEN);\nzero$1(_dist_code);\nvar _length_code = new Array(MAX_MATCH$1 - MIN_MATCH$1 + 1);\nzero$1(_length_code);\nvar base_length = new Array(LENGTH_CODES$1);\nzero$1(base_length);\nvar base_dist = new Array(D_CODES$1);\nzero$1(base_dist);\nvar adler32 = (adler, buf, len, pos) => {\n  let s1 = adler & 65535 | 0, s2 = adler >>> 16 & 65535 | 0, n = 0;\n  while (len !== 0) {\n    n = len > 2e3 ? 2e3 : len;\n    len -= n;\n    do {\n      s1 = s1 + buf[pos++] | 0;\n      s2 = s2 + s1 | 0;\n    } while (--n);\n    s1 %= 65521;\n    s2 %= 65521;\n  }\n  return s1 | s2 << 16 | 0;\n};\nvar adler32_1 = adler32;\nvar makeTable = () => {\n  let c, table = [];\n  for (var n = 0; n < 256; n++) {\n    c = n;\n    for (var k = 0; k < 8; k++) {\n      c = c & 1 ? 3988292384 ^ c >>> 1 : c >>> 1;\n    }\n    table[n] = c;\n  }\n  return table;\n};\nvar crcTable = new Uint32Array(makeTable());\nvar crc32 = (crc, buf, len, pos) => {\n  const t = crcTable;\n  const end = pos + len;\n  crc ^= -1;\n  for (let i = pos; i < end; i++) {\n    crc = crc >>> 8 ^ t[(crc ^ buf[i]) & 255];\n  }\n  return crc ^ -1;\n};\nvar crc32_1 = crc32;\nvar messages = {\n  2: \"need dictionary\",\n  1: \"stream end\",\n  0: \"\",\n  \"-1\": \"file error\",\n  \"-2\": \"stream error\",\n  \"-3\": \"data error\",\n  \"-4\": \"insufficient memory\",\n  \"-5\": \"buffer error\",\n  \"-6\": \"incompatible version\"\n};\nvar constants$2 = {\n  Z_NO_FLUSH: 0,\n  Z_PARTIAL_FLUSH: 1,\n  Z_SYNC_FLUSH: 2,\n  Z_FULL_FLUSH: 3,\n  Z_FINISH: 4,\n  Z_BLOCK: 5,\n  Z_TREES: 6,\n  Z_OK: 0,\n  Z_STREAM_END: 1,\n  Z_NEED_DICT: 2,\n  Z_ERRNO: -1,\n  Z_STREAM_ERROR: -2,\n  Z_DATA_ERROR: -3,\n  Z_MEM_ERROR: -4,\n  Z_BUF_ERROR: -5,\n  Z_NO_COMPRESSION: 0,\n  Z_BEST_SPEED: 1,\n  Z_BEST_COMPRESSION: 9,\n  Z_DEFAULT_COMPRESSION: -1,\n  Z_FILTERED: 1,\n  Z_HUFFMAN_ONLY: 2,\n  Z_RLE: 3,\n  Z_FIXED: 4,\n  Z_DEFAULT_STRATEGY: 0,\n  Z_BINARY: 0,\n  Z_TEXT: 1,\n  Z_UNKNOWN: 2,\n  Z_DEFLATED: 8\n};\nvar _has = (obj, key) => {\n  return Object.prototype.hasOwnProperty.call(obj, key);\n};\nvar assign = function(obj) {\n  const sources = Array.prototype.slice.call(arguments, 1);\n  while (sources.length) {\n    const source = sources.shift();\n    if (!source) {\n      continue;\n    }\n    if (typeof source !== \"object\") {\n      throw new TypeError(source + \"must be non-object\");\n    }\n    for (const p in source) {\n      if (_has(source, p)) {\n        obj[p] = source[p];\n      }\n    }\n  }\n  return obj;\n};\nvar flattenChunks = (chunks) => {\n  let len = 0;\n  for (let i = 0, l = chunks.length; i < l; i++) {\n    len += chunks[i].length;\n  }\n  const result = new Uint8Array(len);\n  for (let i = 0, pos = 0, l = chunks.length; i < l; i++) {\n    let chunk = chunks[i];\n    result.set(chunk, pos);\n    pos += chunk.length;\n  }\n  return result;\n};\nvar common = {\n  assign,\n  flattenChunks\n};\nvar STR_APPLY_UIA_OK = true;\ntry {\n  String.fromCharCode.apply(null, new Uint8Array(1));\n} catch (__) {\n  STR_APPLY_UIA_OK = false;\n}\nvar _utf8len = new Uint8Array(256);\nfor (let q = 0; q < 256; q++) {\n  _utf8len[q] = q >= 252 ? 6 : q >= 248 ? 5 : q >= 240 ? 4 : q >= 224 ? 3 : q >= 192 ? 2 : 1;\n}\n_utf8len[254] = _utf8len[254] = 1;\nvar string2buf = (str) => {\n  if (typeof TextEncoder === \"function\" && TextEncoder.prototype.encode) {\n    return new TextEncoder().encode(str);\n  }\n  let buf, c, c2, m_pos, i, str_len = str.length, buf_len = 0;\n  for (m_pos = 0; m_pos < str_len; m_pos++) {\n    c = str.charCodeAt(m_pos);\n    if ((c & 64512) === 55296 && m_pos + 1 < str_len) {\n      c2 = str.charCodeAt(m_pos + 1);\n      if ((c2 & 64512) === 56320) {\n        c = 65536 + (c - 55296 << 10) + (c2 - 56320);\n        m_pos++;\n      }\n    }\n    buf_len += c < 128 ? 1 : c < 2048 ? 2 : c < 65536 ? 3 : 4;\n  }\n  buf = new Uint8Array(buf_len);\n  for (i = 0, m_pos = 0; i < buf_len; m_pos++) {\n    c = str.charCodeAt(m_pos);\n    if ((c & 64512) === 55296 && m_pos + 1 < str_len) {\n      c2 = str.charCodeAt(m_pos + 1);\n      if ((c2 & 64512) === 56320) {\n        c = 65536 + (c - 55296 << 10) + (c2 - 56320);\n        m_pos++;\n      }\n    }\n    if (c < 128) {\n      buf[i++] = c;\n    } else if (c < 2048) {\n      buf[i++] = 192 | c >>> 6;\n      buf[i++] = 128 | c & 63;\n    } else if (c < 65536) {\n      buf[i++] = 224 | c >>> 12;\n      buf[i++] = 128 | c >>> 6 & 63;\n      buf[i++] = 128 | c & 63;\n    } else {\n      buf[i++] = 240 | c >>> 18;\n      buf[i++] = 128 | c >>> 12 & 63;\n      buf[i++] = 128 | c >>> 6 & 63;\n      buf[i++] = 128 | c & 63;\n    }\n  }\n  return buf;\n};\nvar buf2binstring = (buf, len) => {\n  if (len < 65534) {\n    if (buf.subarray && STR_APPLY_UIA_OK) {\n      return String.fromCharCode.apply(null, buf.length === len ? buf : buf.subarray(0, len));\n    }\n  }\n  let result = \"\";\n  for (let i = 0; i < len; i++) {\n    result += String.fromCharCode(buf[i]);\n  }\n  return result;\n};\nvar buf2string = (buf, max) => {\n  const len = max || buf.length;\n  if (typeof TextDecoder === \"function\" && TextDecoder.prototype.decode) {\n    return new TextDecoder().decode(buf.subarray(0, max));\n  }\n  let i, out;\n  const utf16buf = new Array(len * 2);\n  for (out = 0, i = 0; i < len; ) {\n    let c = buf[i++];\n    if (c < 128) {\n      utf16buf[out++] = c;\n      continue;\n    }\n    let c_len = _utf8len[c];\n    if (c_len > 4) {\n      utf16buf[out++] = 65533;\n      i += c_len - 1;\n      continue;\n    }\n    c &= c_len === 2 ? 31 : c_len === 3 ? 15 : 7;\n    while (c_len > 1 && i < len) {\n      c = c << 6 | buf[i++] & 63;\n      c_len--;\n    }\n    if (c_len > 1) {\n      utf16buf[out++] = 65533;\n      continue;\n    }\n    if (c < 65536) {\n      utf16buf[out++] = c;\n    } else {\n      c -= 65536;\n      utf16buf[out++] = 55296 | c >> 10 & 1023;\n      utf16buf[out++] = 56320 | c & 1023;\n    }\n  }\n  return buf2binstring(utf16buf, out);\n};\nvar utf8border = (buf, max) => {\n  max = max || buf.length;\n  if (max > buf.length) {\n    max = buf.length;\n  }\n  let pos = max - 1;\n  while (pos >= 0 && (buf[pos] & 192) === 128) {\n    pos--;\n  }\n  if (pos < 0) {\n    return max;\n  }\n  if (pos === 0) {\n    return max;\n  }\n  return pos + _utf8len[buf[pos]] > max ? pos : max;\n};\nvar strings = {\n  string2buf,\n  buf2string,\n  utf8border\n};\nfunction ZStream() {\n  this.input = null;\n  this.next_in = 0;\n  this.avail_in = 0;\n  this.total_in = 0;\n  this.output = null;\n  this.next_out = 0;\n  this.avail_out = 0;\n  this.total_out = 0;\n  this.msg = \"\";\n  this.state = null;\n  this.data_type = 2;\n  this.adler = 0;\n}\nvar zstream = ZStream;\nvar BAD$1 = 30;\nvar TYPE$1 = 12;\nvar inffast = function inflate_fast(strm, start) {\n  let _in;\n  let last;\n  let _out;\n  let beg;\n  let end;\n  let dmax;\n  let wsize;\n  let whave;\n  let wnext;\n  let s_window;\n  let hold;\n  let bits;\n  let lcode;\n  let dcode;\n  let lmask;\n  let dmask;\n  let here;\n  let op;\n  let len;\n  let dist;\n  let from;\n  let from_source;\n  let input, output;\n  const state = strm.state;\n  _in = strm.next_in;\n  input = strm.input;\n  last = _in + (strm.avail_in - 5);\n  _out = strm.next_out;\n  output = strm.output;\n  beg = _out - (start - strm.avail_out);\n  end = _out + (strm.avail_out - 257);\n  dmax = state.dmax;\n  wsize = state.wsize;\n  whave = state.whave;\n  wnext = state.wnext;\n  s_window = state.window;\n  hold = state.hold;\n  bits = state.bits;\n  lcode = state.lencode;\n  dcode = state.distcode;\n  lmask = (1 << state.lenbits) - 1;\n  dmask = (1 << state.distbits) - 1;\n  top:\n    do {\n      if (bits < 15) {\n        hold += input[_in++] << bits;\n        bits += 8;\n        hold += input[_in++] << bits;\n        bits += 8;\n      }\n      here = lcode[hold & lmask];\n      dolen:\n        for (; ; ) {\n          op = here >>> 24;\n          hold >>>= op;\n          bits -= op;\n          op = here >>> 16 & 255;\n          if (op === 0) {\n            output[_out++] = here & 65535;\n          } else if (op & 16) {\n            len = here & 65535;\n            op &= 15;\n            if (op) {\n              if (bits < op) {\n                hold += input[_in++] << bits;\n                bits += 8;\n              }\n              len += hold & (1 << op) - 1;\n              hold >>>= op;\n              bits -= op;\n            }\n            if (bits < 15) {\n              hold += input[_in++] << bits;\n              bits += 8;\n              hold += input[_in++] << bits;\n              bits += 8;\n            }\n            here = dcode[hold & dmask];\n            dodist:\n              for (; ; ) {\n                op = here >>> 24;\n                hold >>>= op;\n                bits -= op;\n                op = here >>> 16 & 255;\n                if (op & 16) {\n                  dist = here & 65535;\n                  op &= 15;\n                  if (bits < op) {\n                    hold += input[_in++] << bits;\n                    bits += 8;\n                    if (bits < op) {\n                      hold += input[_in++] << bits;\n                      bits += 8;\n                    }\n                  }\n                  dist += hold & (1 << op) - 1;\n                  if (dist > dmax) {\n                    strm.msg = \"invalid distance too far back\";\n                    state.mode = BAD$1;\n                    break top;\n                  }\n                  hold >>>= op;\n                  bits -= op;\n                  op = _out - beg;\n                  if (dist > op) {\n                    op = dist - op;\n                    if (op > whave) {\n                      if (state.sane) {\n                        strm.msg = \"invalid distance too far back\";\n                        state.mode = BAD$1;\n                        break top;\n                      }\n                    }\n                    from = 0;\n                    from_source = s_window;\n                    if (wnext === 0) {\n                      from += wsize - op;\n                      if (op < len) {\n                        len -= op;\n                        do {\n                          output[_out++] = s_window[from++];\n                        } while (--op);\n                        from = _out - dist;\n                        from_source = output;\n                      }\n                    } else if (wnext < op) {\n                      from += wsize + wnext - op;\n                      op -= wnext;\n                      if (op < len) {\n                        len -= op;\n                        do {\n                          output[_out++] = s_window[from++];\n                        } while (--op);\n                        from = 0;\n                        if (wnext < len) {\n                          op = wnext;\n                          len -= op;\n                          do {\n                            output[_out++] = s_window[from++];\n                          } while (--op);\n                          from = _out - dist;\n                          from_source = output;\n                        }\n                      }\n                    } else {\n                      from += wnext - op;\n                      if (op < len) {\n                        len -= op;\n                        do {\n                          output[_out++] = s_window[from++];\n                        } while (--op);\n                        from = _out - dist;\n                        from_source = output;\n                      }\n                    }\n                    while (len > 2) {\n                      output[_out++] = from_source[from++];\n                      output[_out++] = from_source[from++];\n                      output[_out++] = from_source[from++];\n                      len -= 3;\n                    }\n                    if (len) {\n                      output[_out++] = from_source[from++];\n                      if (len > 1) {\n                        output[_out++] = from_source[from++];\n                      }\n                    }\n                  } else {\n                    from = _out - dist;\n                    do {\n                      output[_out++] = output[from++];\n                      output[_out++] = output[from++];\n                      output[_out++] = output[from++];\n                      len -= 3;\n                    } while (len > 2);\n                    if (len) {\n                      output[_out++] = output[from++];\n                      if (len > 1) {\n                        output[_out++] = output[from++];\n                      }\n                    }\n                  }\n                } else if ((op & 64) === 0) {\n                  here = dcode[(here & 65535) + (hold & (1 << op) - 1)];\n                  continue dodist;\n                } else {\n                  strm.msg = \"invalid distance code\";\n                  state.mode = BAD$1;\n                  break top;\n                }\n                break;\n              }\n          } else if ((op & 64) === 0) {\n            here = lcode[(here & 65535) + (hold & (1 << op) - 1)];\n            continue dolen;\n          } else if (op & 32) {\n            state.mode = TYPE$1;\n            break top;\n          } else {\n            strm.msg = \"invalid literal/length code\";\n            state.mode = BAD$1;\n            break top;\n          }\n          break;\n        }\n    } while (_in < last && _out < end);\n  len = bits >> 3;\n  _in -= len;\n  bits -= len << 3;\n  hold &= (1 << bits) - 1;\n  strm.next_in = _in;\n  strm.next_out = _out;\n  strm.avail_in = _in < last ? 5 + (last - _in) : 5 - (_in - last);\n  strm.avail_out = _out < end ? 257 + (end - _out) : 257 - (_out - end);\n  state.hold = hold;\n  state.bits = bits;\n  return;\n};\nvar MAXBITS = 15;\nvar ENOUGH_LENS$1 = 852;\nvar ENOUGH_DISTS$1 = 592;\nvar CODES$1 = 0;\nvar LENS$1 = 1;\nvar DISTS$1 = 2;\nvar lbase = new Uint16Array([\n  3,\n  4,\n  5,\n  6,\n  7,\n  8,\n  9,\n  10,\n  11,\n  13,\n  15,\n  17,\n  19,\n  23,\n  27,\n  31,\n  35,\n  43,\n  51,\n  59,\n  67,\n  83,\n  99,\n  115,\n  131,\n  163,\n  195,\n  227,\n  258,\n  0,\n  0\n]);\nvar lext = new Uint8Array([\n  16,\n  16,\n  16,\n  16,\n  16,\n  16,\n  16,\n  16,\n  17,\n  17,\n  17,\n  17,\n  18,\n  18,\n  18,\n  18,\n  19,\n  19,\n  19,\n  19,\n  20,\n  20,\n  20,\n  20,\n  21,\n  21,\n  21,\n  21,\n  16,\n  72,\n  78\n]);\nvar dbase = new Uint16Array([\n  1,\n  2,\n  3,\n  4,\n  5,\n  7,\n  9,\n  13,\n  17,\n  25,\n  33,\n  49,\n  65,\n  97,\n  129,\n  193,\n  257,\n  385,\n  513,\n  769,\n  1025,\n  1537,\n  2049,\n  3073,\n  4097,\n  6145,\n  8193,\n  12289,\n  16385,\n  24577,\n  0,\n  0\n]);\nvar dext = new Uint8Array([\n  16,\n  16,\n  16,\n  16,\n  17,\n  17,\n  18,\n  18,\n  19,\n  19,\n  20,\n  20,\n  21,\n  21,\n  22,\n  22,\n  23,\n  23,\n  24,\n  24,\n  25,\n  25,\n  26,\n  26,\n  27,\n  27,\n  28,\n  28,\n  29,\n  29,\n  64,\n  64\n]);\nvar inflate_table = (type, lens, lens_index, codes, table, table_index, work, opts) => {\n  const bits = opts.bits;\n  let len = 0;\n  let sym = 0;\n  let min = 0, max = 0;\n  let root = 0;\n  let curr = 0;\n  let drop = 0;\n  let left = 0;\n  let used = 0;\n  let huff = 0;\n  let incr;\n  let fill;\n  let low;\n  let mask;\n  let next;\n  let base = null;\n  let base_index = 0;\n  let end;\n  const count = new Uint16Array(MAXBITS + 1);\n  const offs = new Uint16Array(MAXBITS + 1);\n  let extra = null;\n  let extra_index = 0;\n  let here_bits, here_op, here_val;\n  for (len = 0; len <= MAXBITS; len++) {\n    count[len] = 0;\n  }\n  for (sym = 0; sym < codes; sym++) {\n    count[lens[lens_index + sym]]++;\n  }\n  root = bits;\n  for (max = MAXBITS; max >= 1; max--) {\n    if (count[max] !== 0) {\n      break;\n    }\n  }\n  if (root > max) {\n    root = max;\n  }\n  if (max === 0) {\n    table[table_index++] = 1 << 24 | 64 << 16 | 0;\n    table[table_index++] = 1 << 24 | 64 << 16 | 0;\n    opts.bits = 1;\n    return 0;\n  }\n  for (min = 1; min < max; min++) {\n    if (count[min] !== 0) {\n      break;\n    }\n  }\n  if (root < min) {\n    root = min;\n  }\n  left = 1;\n  for (len = 1; len <= MAXBITS; len++) {\n    left <<= 1;\n    left -= count[len];\n    if (left < 0) {\n      return -1;\n    }\n  }\n  if (left > 0 && (type === CODES$1 || max !== 1)) {\n    return -1;\n  }\n  offs[1] = 0;\n  for (len = 1; len < MAXBITS; len++) {\n    offs[len + 1] = offs[len] + count[len];\n  }\n  for (sym = 0; sym < codes; sym++) {\n    if (lens[lens_index + sym] !== 0) {\n      work[offs[lens[lens_index + sym]]++] = sym;\n    }\n  }\n  if (type === CODES$1) {\n    base = extra = work;\n    end = 19;\n  } else if (type === LENS$1) {\n    base = lbase;\n    base_index -= 257;\n    extra = lext;\n    extra_index -= 257;\n    end = 256;\n  } else {\n    base = dbase;\n    extra = dext;\n    end = -1;\n  }\n  huff = 0;\n  sym = 0;\n  len = min;\n  next = table_index;\n  curr = root;\n  drop = 0;\n  low = -1;\n  used = 1 << root;\n  mask = used - 1;\n  if (type === LENS$1 && used > ENOUGH_LENS$1 || type === DISTS$1 && used > ENOUGH_DISTS$1) {\n    return 1;\n  }\n  for (; ; ) {\n    here_bits = len - drop;\n    if (work[sym] < end) {\n      here_op = 0;\n      here_val = work[sym];\n    } else if (work[sym] > end) {\n      here_op = extra[extra_index + work[sym]];\n      here_val = base[base_index + work[sym]];\n    } else {\n      here_op = 32 + 64;\n      here_val = 0;\n    }\n    incr = 1 << len - drop;\n    fill = 1 << curr;\n    min = fill;\n    do {\n      fill -= incr;\n      table[next + (huff >> drop) + fill] = here_bits << 24 | here_op << 16 | here_val | 0;\n    } while (fill !== 0);\n    incr = 1 << len - 1;\n    while (huff & incr) {\n      incr >>= 1;\n    }\n    if (incr !== 0) {\n      huff &= incr - 1;\n      huff += incr;\n    } else {\n      huff = 0;\n    }\n    sym++;\n    if (--count[len] === 0) {\n      if (len === max) {\n        break;\n      }\n      len = lens[lens_index + work[sym]];\n    }\n    if (len > root && (huff & mask) !== low) {\n      if (drop === 0) {\n        drop = root;\n      }\n      next += min;\n      curr = len - drop;\n      left = 1 << curr;\n      while (curr + drop < max) {\n        left -= count[curr + drop];\n        if (left <= 0) {\n          break;\n        }\n        curr++;\n        left <<= 1;\n      }\n      used += 1 << curr;\n      if (type === LENS$1 && used > ENOUGH_LENS$1 || type === DISTS$1 && used > ENOUGH_DISTS$1) {\n        return 1;\n      }\n      low = huff & mask;\n      table[low] = root << 24 | curr << 16 | next - table_index | 0;\n    }\n  }\n  if (huff !== 0) {\n    table[next + huff] = len - drop << 24 | 64 << 16 | 0;\n  }\n  opts.bits = root;\n  return 0;\n};\nvar inftrees = inflate_table;\nvar CODES = 0;\nvar LENS = 1;\nvar DISTS = 2;\nvar {\n  Z_FINISH: Z_FINISH$1,\n  Z_BLOCK,\n  Z_TREES,\n  Z_OK: Z_OK$1,\n  Z_STREAM_END: Z_STREAM_END$1,\n  Z_NEED_DICT: Z_NEED_DICT$1,\n  Z_STREAM_ERROR: Z_STREAM_ERROR$1,\n  Z_DATA_ERROR: Z_DATA_ERROR$1,\n  Z_MEM_ERROR: Z_MEM_ERROR$1,\n  Z_BUF_ERROR,\n  Z_DEFLATED\n} = constants$2;\nvar HEAD = 1;\nvar FLAGS = 2;\nvar TIME = 3;\nvar OS = 4;\nvar EXLEN = 5;\nvar EXTRA = 6;\nvar NAME = 7;\nvar COMMENT = 8;\nvar HCRC = 9;\nvar DICTID = 10;\nvar DICT = 11;\nvar TYPE = 12;\nvar TYPEDO = 13;\nvar STORED = 14;\nvar COPY_ = 15;\nvar COPY = 16;\nvar TABLE = 17;\nvar LENLENS = 18;\nvar CODELENS = 19;\nvar LEN_ = 20;\nvar LEN = 21;\nvar LENEXT = 22;\nvar DIST = 23;\nvar DISTEXT = 24;\nvar MATCH = 25;\nvar LIT = 26;\nvar CHECK = 27;\nvar LENGTH = 28;\nvar DONE = 29;\nvar BAD = 30;\nvar MEM = 31;\nvar SYNC = 32;\nvar ENOUGH_LENS = 852;\nvar ENOUGH_DISTS = 592;\nvar MAX_WBITS = 15;\nvar DEF_WBITS = MAX_WBITS;\nvar zswap32 = (q) => {\n  return (q >>> 24 & 255) + (q >>> 8 & 65280) + ((q & 65280) << 8) + ((q & 255) << 24);\n};\nfunction InflateState() {\n  this.mode = 0;\n  this.last = false;\n  this.wrap = 0;\n  this.havedict = false;\n  this.flags = 0;\n  this.dmax = 0;\n  this.check = 0;\n  this.total = 0;\n  this.head = null;\n  this.wbits = 0;\n  this.wsize = 0;\n  this.whave = 0;\n  this.wnext = 0;\n  this.window = null;\n  this.hold = 0;\n  this.bits = 0;\n  this.length = 0;\n  this.offset = 0;\n  this.extra = 0;\n  this.lencode = null;\n  this.distcode = null;\n  this.lenbits = 0;\n  this.distbits = 0;\n  this.ncode = 0;\n  this.nlen = 0;\n  this.ndist = 0;\n  this.have = 0;\n  this.next = null;\n  this.lens = new Uint16Array(320);\n  this.work = new Uint16Array(288);\n  this.lendyn = null;\n  this.distdyn = null;\n  this.sane = 0;\n  this.back = 0;\n  this.was = 0;\n}\nvar inflateResetKeep = (strm) => {\n  if (!strm || !strm.state) {\n    return Z_STREAM_ERROR$1;\n  }\n  const state = strm.state;\n  strm.total_in = strm.total_out = state.total = 0;\n  strm.msg = \"\";\n  if (state.wrap) {\n    strm.adler = state.wrap & 1;\n  }\n  state.mode = HEAD;\n  state.last = 0;\n  state.havedict = 0;\n  state.dmax = 32768;\n  state.head = null;\n  state.hold = 0;\n  state.bits = 0;\n  state.lencode = state.lendyn = new Int32Array(ENOUGH_LENS);\n  state.distcode = state.distdyn = new Int32Array(ENOUGH_DISTS);\n  state.sane = 1;\n  state.back = -1;\n  return Z_OK$1;\n};\nvar inflateReset = (strm) => {\n  if (!strm || !strm.state) {\n    return Z_STREAM_ERROR$1;\n  }\n  const state = strm.state;\n  state.wsize = 0;\n  state.whave = 0;\n  state.wnext = 0;\n  return inflateResetKeep(strm);\n};\nvar inflateReset2 = (strm, windowBits) => {\n  let wrap;\n  if (!strm || !strm.state) {\n    return Z_STREAM_ERROR$1;\n  }\n  const state = strm.state;\n  if (windowBits < 0) {\n    wrap = 0;\n    windowBits = -windowBits;\n  } else {\n    wrap = (windowBits >> 4) + 1;\n    if (windowBits < 48) {\n      windowBits &= 15;\n    }\n  }\n  if (windowBits && (windowBits < 8 || windowBits > 15)) {\n    return Z_STREAM_ERROR$1;\n  }\n  if (state.window !== null && state.wbits !== windowBits) {\n    state.window = null;\n  }\n  state.wrap = wrap;\n  state.wbits = windowBits;\n  return inflateReset(strm);\n};\nvar inflateInit2 = (strm, windowBits) => {\n  if (!strm) {\n    return Z_STREAM_ERROR$1;\n  }\n  const state = new InflateState();\n  strm.state = state;\n  state.window = null;\n  const ret = inflateReset2(strm, windowBits);\n  if (ret !== Z_OK$1) {\n    strm.state = null;\n  }\n  return ret;\n};\nvar inflateInit = (strm) => {\n  return inflateInit2(strm, DEF_WBITS);\n};\nvar virgin = true;\nvar lenfix;\nvar distfix;\nvar fixedtables = (state) => {\n  if (virgin) {\n    lenfix = new Int32Array(512);\n    distfix = new Int32Array(32);\n    let sym = 0;\n    while (sym < 144) {\n      state.lens[sym++] = 8;\n    }\n    while (sym < 256) {\n      state.lens[sym++] = 9;\n    }\n    while (sym < 280) {\n      state.lens[sym++] = 7;\n    }\n    while (sym < 288) {\n      state.lens[sym++] = 8;\n    }\n    inftrees(LENS, state.lens, 0, 288, lenfix, 0, state.work, { bits: 9 });\n    sym = 0;\n    while (sym < 32) {\n      state.lens[sym++] = 5;\n    }\n    inftrees(DISTS, state.lens, 0, 32, distfix, 0, state.work, { bits: 5 });\n    virgin = false;\n  }\n  state.lencode = lenfix;\n  state.lenbits = 9;\n  state.distcode = distfix;\n  state.distbits = 5;\n};\nvar updatewindow = (strm, src, end, copy) => {\n  let dist;\n  const state = strm.state;\n  if (state.window === null) {\n    state.wsize = 1 << state.wbits;\n    state.wnext = 0;\n    state.whave = 0;\n    state.window = new Uint8Array(state.wsize);\n  }\n  if (copy >= state.wsize) {\n    state.window.set(src.subarray(end - state.wsize, end), 0);\n    state.wnext = 0;\n    state.whave = state.wsize;\n  } else {\n    dist = state.wsize - state.wnext;\n    if (dist > copy) {\n      dist = copy;\n    }\n    state.window.set(src.subarray(end - copy, end - copy + dist), state.wnext);\n    copy -= dist;\n    if (copy) {\n      state.window.set(src.subarray(end - copy, end), 0);\n      state.wnext = copy;\n      state.whave = state.wsize;\n    } else {\n      state.wnext += dist;\n      if (state.wnext === state.wsize) {\n        state.wnext = 0;\n      }\n      if (state.whave < state.wsize) {\n        state.whave += dist;\n      }\n    }\n  }\n  return 0;\n};\nvar inflate$2 = (strm, flush) => {\n  let state;\n  let input, output;\n  let next;\n  let put;\n  let have, left;\n  let hold;\n  let bits;\n  let _in, _out;\n  let copy;\n  let from;\n  let from_source;\n  let here = 0;\n  let here_bits, here_op, here_val;\n  let last_bits, last_op, last_val;\n  let len;\n  let ret;\n  const hbuf = new Uint8Array(4);\n  let opts;\n  let n;\n  const order = new Uint8Array([16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15]);\n  if (!strm || !strm.state || !strm.output || !strm.input && strm.avail_in !== 0) {\n    return Z_STREAM_ERROR$1;\n  }\n  state = strm.state;\n  if (state.mode === TYPE) {\n    state.mode = TYPEDO;\n  }\n  put = strm.next_out;\n  output = strm.output;\n  left = strm.avail_out;\n  next = strm.next_in;\n  input = strm.input;\n  have = strm.avail_in;\n  hold = state.hold;\n  bits = state.bits;\n  _in = have;\n  _out = left;\n  ret = Z_OK$1;\n  inf_leave:\n    for (; ; ) {\n      switch (state.mode) {\n        case HEAD:\n          if (state.wrap === 0) {\n            state.mode = TYPEDO;\n            break;\n          }\n          while (bits < 16) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          if (state.wrap & 2 && hold === 35615) {\n            state.check = 0;\n            hbuf[0] = hold & 255;\n            hbuf[1] = hold >>> 8 & 255;\n            state.check = crc32_1(state.check, hbuf, 2, 0);\n            hold = 0;\n            bits = 0;\n            state.mode = FLAGS;\n            break;\n          }\n          state.flags = 0;\n          if (state.head) {\n            state.head.done = false;\n          }\n          if (!(state.wrap & 1) || (((hold & 255) << 8) + (hold >> 8)) % 31) {\n            strm.msg = \"incorrect header check\";\n            state.mode = BAD;\n            break;\n          }\n          if ((hold & 15) !== Z_DEFLATED) {\n            strm.msg = \"unknown compression method\";\n            state.mode = BAD;\n            break;\n          }\n          hold >>>= 4;\n          bits -= 4;\n          len = (hold & 15) + 8;\n          if (state.wbits === 0) {\n            state.wbits = len;\n          } else if (len > state.wbits) {\n            strm.msg = \"invalid window size\";\n            state.mode = BAD;\n            break;\n          }\n          state.dmax = 1 << state.wbits;\n          strm.adler = state.check = 1;\n          state.mode = hold & 512 ? DICTID : TYPE;\n          hold = 0;\n          bits = 0;\n          break;\n        case FLAGS:\n          while (bits < 16) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          state.flags = hold;\n          if ((state.flags & 255) !== Z_DEFLATED) {\n            strm.msg = \"unknown compression method\";\n            state.mode = BAD;\n            break;\n          }\n          if (state.flags & 57344) {\n            strm.msg = \"unknown header flags set\";\n            state.mode = BAD;\n            break;\n          }\n          if (state.head) {\n            state.head.text = hold >> 8 & 1;\n          }\n          if (state.flags & 512) {\n            hbuf[0] = hold & 255;\n            hbuf[1] = hold >>> 8 & 255;\n            state.check = crc32_1(state.check, hbuf, 2, 0);\n          }\n          hold = 0;\n          bits = 0;\n          state.mode = TIME;\n        case TIME:\n          while (bits < 32) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          if (state.head) {\n            state.head.time = hold;\n          }\n          if (state.flags & 512) {\n            hbuf[0] = hold & 255;\n            hbuf[1] = hold >>> 8 & 255;\n            hbuf[2] = hold >>> 16 & 255;\n            hbuf[3] = hold >>> 24 & 255;\n            state.check = crc32_1(state.check, hbuf, 4, 0);\n          }\n          hold = 0;\n          bits = 0;\n          state.mode = OS;\n        case OS:\n          while (bits < 16) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          if (state.head) {\n            state.head.xflags = hold & 255;\n            state.head.os = hold >> 8;\n          }\n          if (state.flags & 512) {\n            hbuf[0] = hold & 255;\n            hbuf[1] = hold >>> 8 & 255;\n            state.check = crc32_1(state.check, hbuf, 2, 0);\n          }\n          hold = 0;\n          bits = 0;\n          state.mode = EXLEN;\n        case EXLEN:\n          if (state.flags & 1024) {\n            while (bits < 16) {\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            state.length = hold;\n            if (state.head) {\n              state.head.extra_len = hold;\n            }\n            if (state.flags & 512) {\n              hbuf[0] = hold & 255;\n              hbuf[1] = hold >>> 8 & 255;\n              state.check = crc32_1(state.check, hbuf, 2, 0);\n            }\n            hold = 0;\n            bits = 0;\n          } else if (state.head) {\n            state.head.extra = null;\n          }\n          state.mode = EXTRA;\n        case EXTRA:\n          if (state.flags & 1024) {\n            copy = state.length;\n            if (copy > have) {\n              copy = have;\n            }\n            if (copy) {\n              if (state.head) {\n                len = state.head.extra_len - state.length;\n                if (!state.head.extra) {\n                  state.head.extra = new Uint8Array(state.head.extra_len);\n                }\n                state.head.extra.set(input.subarray(next, next + copy), len);\n              }\n              if (state.flags & 512) {\n                state.check = crc32_1(state.check, input, copy, next);\n              }\n              have -= copy;\n              next += copy;\n              state.length -= copy;\n            }\n            if (state.length) {\n              break inf_leave;\n            }\n          }\n          state.length = 0;\n          state.mode = NAME;\n        case NAME:\n          if (state.flags & 2048) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            copy = 0;\n            do {\n              len = input[next + copy++];\n              if (state.head && len && state.length < 65536) {\n                state.head.name += String.fromCharCode(len);\n              }\n            } while (len && copy < have);\n            if (state.flags & 512) {\n              state.check = crc32_1(state.check, input, copy, next);\n            }\n            have -= copy;\n            next += copy;\n            if (len) {\n              break inf_leave;\n            }\n          } else if (state.head) {\n            state.head.name = null;\n          }\n          state.length = 0;\n          state.mode = COMMENT;\n        case COMMENT:\n          if (state.flags & 4096) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            copy = 0;\n            do {\n              len = input[next + copy++];\n              if (state.head && len && state.length < 65536) {\n                state.head.comment += String.fromCharCode(len);\n              }\n            } while (len && copy < have);\n            if (state.flags & 512) {\n              state.check = crc32_1(state.check, input, copy, next);\n            }\n            have -= copy;\n            next += copy;\n            if (len) {\n              break inf_leave;\n            }\n          } else if (state.head) {\n            state.head.comment = null;\n          }\n          state.mode = HCRC;\n        case HCRC:\n          if (state.flags & 512) {\n            while (bits < 16) {\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            if (hold !== (state.check & 65535)) {\n              strm.msg = \"header crc mismatch\";\n              state.mode = BAD;\n              break;\n            }\n            hold = 0;\n            bits = 0;\n          }\n          if (state.head) {\n            state.head.hcrc = state.flags >> 9 & 1;\n            state.head.done = true;\n          }\n          strm.adler = state.check = 0;\n          state.mode = TYPE;\n          break;\n        case DICTID:\n          while (bits < 32) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          strm.adler = state.check = zswap32(hold);\n          hold = 0;\n          bits = 0;\n          state.mode = DICT;\n        case DICT:\n          if (state.havedict === 0) {\n            strm.next_out = put;\n            strm.avail_out = left;\n            strm.next_in = next;\n            strm.avail_in = have;\n            state.hold = hold;\n            state.bits = bits;\n            return Z_NEED_DICT$1;\n          }\n          strm.adler = state.check = 1;\n          state.mode = TYPE;\n        case TYPE:\n          if (flush === Z_BLOCK || flush === Z_TREES) {\n            break inf_leave;\n          }\n        case TYPEDO:\n          if (state.last) {\n            hold >>>= bits & 7;\n            bits -= bits & 7;\n            state.mode = CHECK;\n            break;\n          }\n          while (bits < 3) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          state.last = hold & 1;\n          hold >>>= 1;\n          bits -= 1;\n          switch (hold & 3) {\n            case 0:\n              state.mode = STORED;\n              break;\n            case 1:\n              fixedtables(state);\n              state.mode = LEN_;\n              if (flush === Z_TREES) {\n                hold >>>= 2;\n                bits -= 2;\n                break inf_leave;\n              }\n              break;\n            case 2:\n              state.mode = TABLE;\n              break;\n            case 3:\n              strm.msg = \"invalid block type\";\n              state.mode = BAD;\n          }\n          hold >>>= 2;\n          bits -= 2;\n          break;\n        case STORED:\n          hold >>>= bits & 7;\n          bits -= bits & 7;\n          while (bits < 32) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          if ((hold & 65535) !== (hold >>> 16 ^ 65535)) {\n            strm.msg = \"invalid stored block lengths\";\n            state.mode = BAD;\n            break;\n          }\n          state.length = hold & 65535;\n          hold = 0;\n          bits = 0;\n          state.mode = COPY_;\n          if (flush === Z_TREES) {\n            break inf_leave;\n          }\n        case COPY_:\n          state.mode = COPY;\n        case COPY:\n          copy = state.length;\n          if (copy) {\n            if (copy > have) {\n              copy = have;\n            }\n            if (copy > left) {\n              copy = left;\n            }\n            if (copy === 0) {\n              break inf_leave;\n            }\n            output.set(input.subarray(next, next + copy), put);\n            have -= copy;\n            next += copy;\n            left -= copy;\n            put += copy;\n            state.length -= copy;\n            break;\n          }\n          state.mode = TYPE;\n          break;\n        case TABLE:\n          while (bits < 14) {\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          state.nlen = (hold & 31) + 257;\n          hold >>>= 5;\n          bits -= 5;\n          state.ndist = (hold & 31) + 1;\n          hold >>>= 5;\n          bits -= 5;\n          state.ncode = (hold & 15) + 4;\n          hold >>>= 4;\n          bits -= 4;\n          if (state.nlen > 286 || state.ndist > 30) {\n            strm.msg = \"too many length or distance symbols\";\n            state.mode = BAD;\n            break;\n          }\n          state.have = 0;\n          state.mode = LENLENS;\n        case LENLENS:\n          while (state.have < state.ncode) {\n            while (bits < 3) {\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            state.lens[order[state.have++]] = hold & 7;\n            hold >>>= 3;\n            bits -= 3;\n          }\n          while (state.have < 19) {\n            state.lens[order[state.have++]] = 0;\n          }\n          state.lencode = state.lendyn;\n          state.lenbits = 7;\n          opts = { bits: state.lenbits };\n          ret = inftrees(CODES, state.lens, 0, 19, state.lencode, 0, state.work, opts);\n          state.lenbits = opts.bits;\n          if (ret) {\n            strm.msg = \"invalid code lengths set\";\n            state.mode = BAD;\n            break;\n          }\n          state.have = 0;\n          state.mode = CODELENS;\n        case CODELENS:\n          while (state.have < state.nlen + state.ndist) {\n            for (; ; ) {\n              here = state.lencode[hold & (1 << state.lenbits) - 1];\n              here_bits = here >>> 24;\n              here_op = here >>> 16 & 255;\n              here_val = here & 65535;\n              if (here_bits <= bits) {\n                break;\n              }\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            if (here_val < 16) {\n              hold >>>= here_bits;\n              bits -= here_bits;\n              state.lens[state.have++] = here_val;\n            } else {\n              if (here_val === 16) {\n                n = here_bits + 2;\n                while (bits < n) {\n                  if (have === 0) {\n                    break inf_leave;\n                  }\n                  have--;\n                  hold += input[next++] << bits;\n                  bits += 8;\n                }\n                hold >>>= here_bits;\n                bits -= here_bits;\n                if (state.have === 0) {\n                  strm.msg = \"invalid bit length repeat\";\n                  state.mode = BAD;\n                  break;\n                }\n                len = state.lens[state.have - 1];\n                copy = 3 + (hold & 3);\n                hold >>>= 2;\n                bits -= 2;\n              } else if (here_val === 17) {\n                n = here_bits + 3;\n                while (bits < n) {\n                  if (have === 0) {\n                    break inf_leave;\n                  }\n                  have--;\n                  hold += input[next++] << bits;\n                  bits += 8;\n                }\n                hold >>>= here_bits;\n                bits -= here_bits;\n                len = 0;\n                copy = 3 + (hold & 7);\n                hold >>>= 3;\n                bits -= 3;\n              } else {\n                n = here_bits + 7;\n                while (bits < n) {\n                  if (have === 0) {\n                    break inf_leave;\n                  }\n                  have--;\n                  hold += input[next++] << bits;\n                  bits += 8;\n                }\n                hold >>>= here_bits;\n                bits -= here_bits;\n                len = 0;\n                copy = 11 + (hold & 127);\n                hold >>>= 7;\n                bits -= 7;\n              }\n              if (state.have + copy > state.nlen + state.ndist) {\n                strm.msg = \"invalid bit length repeat\";\n                state.mode = BAD;\n                break;\n              }\n              while (copy--) {\n                state.lens[state.have++] = len;\n              }\n            }\n          }\n          if (state.mode === BAD) {\n            break;\n          }\n          if (state.lens[256] === 0) {\n            strm.msg = \"invalid code -- missing end-of-block\";\n            state.mode = BAD;\n            break;\n          }\n          state.lenbits = 9;\n          opts = { bits: state.lenbits };\n          ret = inftrees(LENS, state.lens, 0, state.nlen, state.lencode, 0, state.work, opts);\n          state.lenbits = opts.bits;\n          if (ret) {\n            strm.msg = \"invalid literal/lengths set\";\n            state.mode = BAD;\n            break;\n          }\n          state.distbits = 6;\n          state.distcode = state.distdyn;\n          opts = { bits: state.distbits };\n          ret = inftrees(DISTS, state.lens, state.nlen, state.ndist, state.distcode, 0, state.work, opts);\n          state.distbits = opts.bits;\n          if (ret) {\n            strm.msg = \"invalid distances set\";\n            state.mode = BAD;\n            break;\n          }\n          state.mode = LEN_;\n          if (flush === Z_TREES) {\n            break inf_leave;\n          }\n        case LEN_:\n          state.mode = LEN;\n        case LEN:\n          if (have >= 6 && left >= 258) {\n            strm.next_out = put;\n            strm.avail_out = left;\n            strm.next_in = next;\n            strm.avail_in = have;\n            state.hold = hold;\n            state.bits = bits;\n            inffast(strm, _out);\n            put = strm.next_out;\n            output = strm.output;\n            left = strm.avail_out;\n            next = strm.next_in;\n            input = strm.input;\n            have = strm.avail_in;\n            hold = state.hold;\n            bits = state.bits;\n            if (state.mode === TYPE) {\n              state.back = -1;\n            }\n            break;\n          }\n          state.back = 0;\n          for (; ; ) {\n            here = state.lencode[hold & (1 << state.lenbits) - 1];\n            here_bits = here >>> 24;\n            here_op = here >>> 16 & 255;\n            here_val = here & 65535;\n            if (here_bits <= bits) {\n              break;\n            }\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          if (here_op && (here_op & 240) === 0) {\n            last_bits = here_bits;\n            last_op = here_op;\n            last_val = here_val;\n            for (; ; ) {\n              here = state.lencode[last_val + ((hold & (1 << last_bits + last_op) - 1) >> last_bits)];\n              here_bits = here >>> 24;\n              here_op = here >>> 16 & 255;\n              here_val = here & 65535;\n              if (last_bits + here_bits <= bits) {\n                break;\n              }\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            hold >>>= last_bits;\n            bits -= last_bits;\n            state.back += last_bits;\n          }\n          hold >>>= here_bits;\n          bits -= here_bits;\n          state.back += here_bits;\n          state.length = here_val;\n          if (here_op === 0) {\n            state.mode = LIT;\n            break;\n          }\n          if (here_op & 32) {\n            state.back = -1;\n            state.mode = TYPE;\n            break;\n          }\n          if (here_op & 64) {\n            strm.msg = \"invalid literal/length code\";\n            state.mode = BAD;\n            break;\n          }\n          state.extra = here_op & 15;\n          state.mode = LENEXT;\n        case LENEXT:\n          if (state.extra) {\n            n = state.extra;\n            while (bits < n) {\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            state.length += hold & (1 << state.extra) - 1;\n            hold >>>= state.extra;\n            bits -= state.extra;\n            state.back += state.extra;\n          }\n          state.was = state.length;\n          state.mode = DIST;\n        case DIST:\n          for (; ; ) {\n            here = state.distcode[hold & (1 << state.distbits) - 1];\n            here_bits = here >>> 24;\n            here_op = here >>> 16 & 255;\n            here_val = here & 65535;\n            if (here_bits <= bits) {\n              break;\n            }\n            if (have === 0) {\n              break inf_leave;\n            }\n            have--;\n            hold += input[next++] << bits;\n            bits += 8;\n          }\n          if ((here_op & 240) === 0) {\n            last_bits = here_bits;\n            last_op = here_op;\n            last_val = here_val;\n            for (; ; ) {\n              here = state.distcode[last_val + ((hold & (1 << last_bits + last_op) - 1) >> last_bits)];\n              here_bits = here >>> 24;\n              here_op = here >>> 16 & 255;\n              here_val = here & 65535;\n              if (last_bits + here_bits <= bits) {\n                break;\n              }\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            hold >>>= last_bits;\n            bits -= last_bits;\n            state.back += last_bits;\n          }\n          hold >>>= here_bits;\n          bits -= here_bits;\n          state.back += here_bits;\n          if (here_op & 64) {\n            strm.msg = \"invalid distance code\";\n            state.mode = BAD;\n            break;\n          }\n          state.offset = here_val;\n          state.extra = here_op & 15;\n          state.mode = DISTEXT;\n        case DISTEXT:\n          if (state.extra) {\n            n = state.extra;\n            while (bits < n) {\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            state.offset += hold & (1 << state.extra) - 1;\n            hold >>>= state.extra;\n            bits -= state.extra;\n            state.back += state.extra;\n          }\n          if (state.offset > state.dmax) {\n            strm.msg = \"invalid distance too far back\";\n            state.mode = BAD;\n            break;\n          }\n          state.mode = MATCH;\n        case MATCH:\n          if (left === 0) {\n            break inf_leave;\n          }\n          copy = _out - left;\n          if (state.offset > copy) {\n            copy = state.offset - copy;\n            if (copy > state.whave) {\n              if (state.sane) {\n                strm.msg = \"invalid distance too far back\";\n                state.mode = BAD;\n                break;\n              }\n            }\n            if (copy > state.wnext) {\n              copy -= state.wnext;\n              from = state.wsize - copy;\n            } else {\n              from = state.wnext - copy;\n            }\n            if (copy > state.length) {\n              copy = state.length;\n            }\n            from_source = state.window;\n          } else {\n            from_source = output;\n            from = put - state.offset;\n            copy = state.length;\n          }\n          if (copy > left) {\n            copy = left;\n          }\n          left -= copy;\n          state.length -= copy;\n          do {\n            output[put++] = from_source[from++];\n          } while (--copy);\n          if (state.length === 0) {\n            state.mode = LEN;\n          }\n          break;\n        case LIT:\n          if (left === 0) {\n            break inf_leave;\n          }\n          output[put++] = state.length;\n          left--;\n          state.mode = LEN;\n          break;\n        case CHECK:\n          if (state.wrap) {\n            while (bits < 32) {\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold |= input[next++] << bits;\n              bits += 8;\n            }\n            _out -= left;\n            strm.total_out += _out;\n            state.total += _out;\n            if (_out) {\n              strm.adler = state.check = state.flags ? crc32_1(state.check, output, _out, put - _out) : adler32_1(state.check, output, _out, put - _out);\n            }\n            _out = left;\n            if ((state.flags ? hold : zswap32(hold)) !== state.check) {\n              strm.msg = \"incorrect data check\";\n              state.mode = BAD;\n              break;\n            }\n            hold = 0;\n            bits = 0;\n          }\n          state.mode = LENGTH;\n        case LENGTH:\n          if (state.wrap && state.flags) {\n            while (bits < 32) {\n              if (have === 0) {\n                break inf_leave;\n              }\n              have--;\n              hold += input[next++] << bits;\n              bits += 8;\n            }\n            if (hold !== (state.total & 4294967295)) {\n              strm.msg = \"incorrect length check\";\n              state.mode = BAD;\n              break;\n            }\n            hold = 0;\n            bits = 0;\n          }\n          state.mode = DONE;\n        case DONE:\n          ret = Z_STREAM_END$1;\n          break inf_leave;\n        case BAD:\n          ret = Z_DATA_ERROR$1;\n          break inf_leave;\n        case MEM:\n          return Z_MEM_ERROR$1;\n        case SYNC:\n        default:\n          return Z_STREAM_ERROR$1;\n      }\n    }\n  strm.next_out = put;\n  strm.avail_out = left;\n  strm.next_in = next;\n  strm.avail_in = have;\n  state.hold = hold;\n  state.bits = bits;\n  if (state.wsize || _out !== strm.avail_out && state.mode < BAD && (state.mode < CHECK || flush !== Z_FINISH$1)) {\n    if (updatewindow(strm, strm.output, strm.next_out, _out - strm.avail_out))\n      ;\n  }\n  _in -= strm.avail_in;\n  _out -= strm.avail_out;\n  strm.total_in += _in;\n  strm.total_out += _out;\n  state.total += _out;\n  if (state.wrap && _out) {\n    strm.adler = state.check = state.flags ? crc32_1(state.check, output, _out, strm.next_out - _out) : adler32_1(state.check, output, _out, strm.next_out - _out);\n  }\n  strm.data_type = state.bits + (state.last ? 64 : 0) + (state.mode === TYPE ? 128 : 0) + (state.mode === LEN_ || state.mode === COPY_ ? 256 : 0);\n  if ((_in === 0 && _out === 0 || flush === Z_FINISH$1) && ret === Z_OK$1) {\n    ret = Z_BUF_ERROR;\n  }\n  return ret;\n};\nvar inflateEnd = (strm) => {\n  if (!strm || !strm.state) {\n    return Z_STREAM_ERROR$1;\n  }\n  let state = strm.state;\n  if (state.window) {\n    state.window = null;\n  }\n  strm.state = null;\n  return Z_OK$1;\n};\nvar inflateGetHeader = (strm, head) => {\n  if (!strm || !strm.state) {\n    return Z_STREAM_ERROR$1;\n  }\n  const state = strm.state;\n  if ((state.wrap & 2) === 0) {\n    return Z_STREAM_ERROR$1;\n  }\n  state.head = head;\n  head.done = false;\n  return Z_OK$1;\n};\nvar inflateSetDictionary = (strm, dictionary) => {\n  const dictLength = dictionary.length;\n  let state;\n  let dictid;\n  let ret;\n  if (!strm || !strm.state) {\n    return Z_STREAM_ERROR$1;\n  }\n  state = strm.state;\n  if (state.wrap !== 0 && state.mode !== DICT) {\n    return Z_STREAM_ERROR$1;\n  }\n  if (state.mode === DICT) {\n    dictid = 1;\n    dictid = adler32_1(dictid, dictionary, dictLength, 0);\n    if (dictid !== state.check) {\n      return Z_DATA_ERROR$1;\n    }\n  }\n  ret = updatewindow(strm, dictionary, dictLength, dictLength);\n  if (ret) {\n    state.mode = MEM;\n    return Z_MEM_ERROR$1;\n  }\n  state.havedict = 1;\n  return Z_OK$1;\n};\nvar inflateReset_1 = inflateReset;\nvar inflateReset2_1 = inflateReset2;\nvar inflateResetKeep_1 = inflateResetKeep;\nvar inflateInit_1 = inflateInit;\nvar inflateInit2_1 = inflateInit2;\nvar inflate_2$1 = inflate$2;\nvar inflateEnd_1 = inflateEnd;\nvar inflateGetHeader_1 = inflateGetHeader;\nvar inflateSetDictionary_1 = inflateSetDictionary;\nvar inflateInfo = \"pako inflate (from Nodeca project)\";\nvar inflate_1$2 = {\n  inflateReset: inflateReset_1,\n  inflateReset2: inflateReset2_1,\n  inflateResetKeep: inflateResetKeep_1,\n  inflateInit: inflateInit_1,\n  inflateInit2: inflateInit2_1,\n  inflate: inflate_2$1,\n  inflateEnd: inflateEnd_1,\n  inflateGetHeader: inflateGetHeader_1,\n  inflateSetDictionary: inflateSetDictionary_1,\n  inflateInfo\n};\nfunction GZheader() {\n  this.text = 0;\n  this.time = 0;\n  this.xflags = 0;\n  this.os = 0;\n  this.extra = null;\n  this.extra_len = 0;\n  this.name = \"\";\n  this.comment = \"\";\n  this.hcrc = 0;\n  this.done = false;\n}\nvar gzheader = GZheader;\nvar toString = Object.prototype.toString;\nvar {\n  Z_NO_FLUSH,\n  Z_FINISH,\n  Z_OK,\n  Z_STREAM_END,\n  Z_NEED_DICT,\n  Z_STREAM_ERROR,\n  Z_DATA_ERROR,\n  Z_MEM_ERROR\n} = constants$2;\nfunction Inflate$1(options) {\n  this.options = common.assign({\n    chunkSize: 1024 * 64,\n    windowBits: 15,\n    to: \"\"\n  }, options || {});\n  const opt = this.options;\n  if (opt.raw && opt.windowBits >= 0 && opt.windowBits < 16) {\n    opt.windowBits = -opt.windowBits;\n    if (opt.windowBits === 0) {\n      opt.windowBits = -15;\n    }\n  }\n  if (opt.windowBits >= 0 && opt.windowBits < 16 && !(options && options.windowBits)) {\n    opt.windowBits += 32;\n  }\n  if (opt.windowBits > 15 && opt.windowBits < 48) {\n    if ((opt.windowBits & 15) === 0) {\n      opt.windowBits |= 15;\n    }\n  }\n  this.err = 0;\n  this.msg = \"\";\n  this.ended = false;\n  this.chunks = [];\n  this.strm = new zstream();\n  this.strm.avail_out = 0;\n  let status = inflate_1$2.inflateInit2(this.strm, opt.windowBits);\n  if (status !== Z_OK) {\n    throw new Error(messages[status]);\n  }\n  this.header = new gzheader();\n  inflate_1$2.inflateGetHeader(this.strm, this.header);\n  if (opt.dictionary) {\n    if (typeof opt.dictionary === \"string\") {\n      opt.dictionary = strings.string2buf(opt.dictionary);\n    } else if (toString.call(opt.dictionary) === \"[object ArrayBuffer]\") {\n      opt.dictionary = new Uint8Array(opt.dictionary);\n    }\n    if (opt.raw) {\n      status = inflate_1$2.inflateSetDictionary(this.strm, opt.dictionary);\n      if (status !== Z_OK) {\n        throw new Error(messages[status]);\n      }\n    }\n  }\n}\nInflate$1.prototype.push = function(data, flush_mode) {\n  const strm = this.strm;\n  const chunkSize = this.options.chunkSize;\n  const dictionary = this.options.dictionary;\n  let status, _flush_mode, last_avail_out;\n  if (this.ended)\n    return false;\n  if (flush_mode === ~~flush_mode)\n    _flush_mode = flush_mode;\n  else\n    _flush_mode = flush_mode === true ? Z_FINISH : Z_NO_FLUSH;\n  if (toString.call(data) === \"[object ArrayBuffer]\") {\n    strm.input = new Uint8Array(data);\n  } else {\n    strm.input = data;\n  }\n  strm.next_in = 0;\n  strm.avail_in = strm.input.length;\n  for (; ; ) {\n    if (strm.avail_out === 0) {\n      strm.output = new Uint8Array(chunkSize);\n      strm.next_out = 0;\n      strm.avail_out = chunkSize;\n    }\n    status = inflate_1$2.inflate(strm, _flush_mode);\n    if (status === Z_NEED_DICT && dictionary) {\n      status = inflate_1$2.inflateSetDictionary(strm, dictionary);\n      if (status === Z_OK) {\n        status = inflate_1$2.inflate(strm, _flush_mode);\n      } else if (status === Z_DATA_ERROR) {\n        status = Z_NEED_DICT;\n      }\n    }\n    while (strm.avail_in > 0 && status === Z_STREAM_END && strm.state.wrap > 0 && data[strm.next_in] !== 0) {\n      inflate_1$2.inflateReset(strm);\n      status = inflate_1$2.inflate(strm, _flush_mode);\n    }\n    switch (status) {\n      case Z_STREAM_ERROR:\n      case Z_DATA_ERROR:\n      case Z_NEED_DICT:\n      case Z_MEM_ERROR:\n        this.onEnd(status);\n        this.ended = true;\n        return false;\n    }\n    last_avail_out = strm.avail_out;\n    if (strm.next_out) {\n      if (strm.avail_out === 0 || status === Z_STREAM_END) {\n        if (this.options.to === \"string\") {\n          let next_out_utf8 = strings.utf8border(strm.output, strm.next_out);\n          let tail = strm.next_out - next_out_utf8;\n          let utf8str = strings.buf2string(strm.output, next_out_utf8);\n          strm.next_out = tail;\n          strm.avail_out = chunkSize - tail;\n          if (tail)\n            strm.output.set(strm.output.subarray(next_out_utf8, next_out_utf8 + tail), 0);\n          this.onData(utf8str);\n        } else {\n          this.onData(strm.output.length === strm.next_out ? strm.output : strm.output.subarray(0, strm.next_out));\n        }\n      }\n    }\n    if (status === Z_OK && last_avail_out === 0)\n      continue;\n    if (status === Z_STREAM_END) {\n      status = inflate_1$2.inflateEnd(this.strm);\n      this.onEnd(status);\n      this.ended = true;\n      return true;\n    }\n    if (strm.avail_in === 0)\n      break;\n  }\n  return true;\n};\nInflate$1.prototype.onData = function(chunk) {\n  this.chunks.push(chunk);\n};\nInflate$1.prototype.onEnd = function(status) {\n  if (status === Z_OK) {\n    if (this.options.to === \"string\") {\n      this.result = this.chunks.join(\"\");\n    } else {\n      this.result = common.flattenChunks(this.chunks);\n    }\n  }\n  this.chunks = [];\n  this.err = status;\n  this.msg = this.strm.msg;\n};\nfunction inflate$1(input, options) {\n  const inflator = new Inflate$1(options);\n  inflator.push(input);\n  if (inflator.err)\n    throw inflator.msg || messages[inflator.err];\n  return inflator.result;\n}\nfunction inflateRaw$1(input, options) {\n  options = options || {};\n  options.raw = true;\n  return inflate$1(input, options);\n}\nvar Inflate_1$1 = Inflate$1;\nvar inflate_2 = inflate$1;\nvar inflateRaw_1$1 = inflateRaw$1;\nvar ungzip$1 = inflate$1;\nvar constants = constants$2;\nvar inflate_1$1 = {\n  Inflate: Inflate_1$1,\n  inflate: inflate_2,\n  inflateRaw: inflateRaw_1$1,\n  ungzip: ungzip$1,\n  constants\n};\nvar { Inflate, inflate, inflateRaw, ungzip } = inflate_1$1;\nvar inflate_1 = inflate;\nvar ungzip_1 = ungzip;\n\n// esm/filters.js\nvar zlib_decompress = function(buf, itemsize) {\n  let input_array = new Uint8Array(buf);\n  return inflate_1(input_array).buffer;\n};\nvar unshuffle = function(buf, itemsize) {\n  let buffer_size = buf.byteLength;\n  let unshuffled_view = new Uint8Array(buffer_size);\n  let step = Math.floor(buffer_size / itemsize);\n  let shuffled_view = new DataView(buf);\n  for (var j = 0; j < itemsize; j++) {\n    for (var i = 0; i < step; i++) {\n      unshuffled_view[j + i * itemsize] = shuffled_view.getUint8(j * step + i);\n    }\n  }\n  return unshuffled_view.buffer;\n};\nvar fletch32 = function(buf, itemsize) {\n  _verify_fletcher32(buf);\n  return buf.slice(0, -4);\n};\nfunction _verify_fletcher32(chunk_buffer) {\n  var odd_chunk_buffer = chunk_buffer.byteLength % 2 != 0;\n  var data_length = chunk_buffer.byteLength - 4;\n  var view = new DataView(chunk_buffer);\n  var sum1 = 0;\n  var sum2 = 0;\n  for (var offset = 0; offset < data_length - 1; offset += 2) {\n    let datum = view.getUint16(offset, true);\n    sum1 = (sum1 + datum) % 65535;\n    sum2 = (sum2 + sum1) % 65535;\n  }\n  if (odd_chunk_buffer) {\n    let datum = view.getUint8(data_length - 1);\n    sum1 = (sum1 + datum) % 65535;\n    sum2 = (sum2 + sum1) % 65535;\n  }\n  var [ref_sum1, ref_sum2] = struct.unpack_from(\">HH\", chunk_buffer, data_length);\n  ref_sum1 = ref_sum1 % 65535;\n  ref_sum2 = ref_sum2 % 65535;\n  if (sum1 != ref_sum1 || sum2 != ref_sum2) {\n    throw 'ValueError(\"fletcher32 checksum invalid\")';\n  }\n  return true;\n}\nvar GZIP_DEFLATE_FILTER = 1;\nvar SHUFFLE_FILTER = 2;\nvar FLETCH32_FILTER = 3;\nvar Filters = /* @__PURE__ */ new Map([\n  [GZIP_DEFLATE_FILTER, zlib_decompress],\n  [SHUFFLE_FILTER, unshuffle],\n  [FLETCH32_FILTER, fletch32]\n]);\n\n// esm/btree.js\nvar AbstractBTree = class {\n  constructor(fh, offset) {\n    this.fh = fh;\n    this.offset = offset;\n    this.depth = null;\n  }\n  async init() {\n    this.all_nodes = /* @__PURE__ */ new Map();\n    await this._read_root_node();\n    await this._read_children();\n  }\n  async _read_children() {\n    let node_level = this.depth;\n    while (node_level > 0) {\n      for (var parent_node of this.all_nodes.get(node_level)) {\n        for (var child_addr of parent_node.get(\"addresses\")) {\n          this._add_node(await this._read_node(child_addr, node_level - 1));\n        }\n      }\n      node_level--;\n    }\n  }\n  async _read_root_node() {\n    let root_node = await this._read_node(this.offset, null);\n    this._add_node(root_node);\n    this.depth = root_node.get(\"node_level\");\n  }\n  _add_node(node) {\n    let node_level = node.get(\"node_level\");\n    if (this.all_nodes.has(node_level)) {\n      this.all_nodes.get(node_level).push(node);\n    } else {\n      this.all_nodes.set(node_level, [node]);\n    }\n  }\n  async _read_node(offset, node_level) {\n    let node = await this._read_node_header(offset, node_level);\n    node.set(\"keys\", []);\n    node.set(\"addresses\", []);\n    return node;\n  }\n  async _read_node_header(offset) {\n    throw \"NotImplementedError: must define _read_node_header in implementation class\";\n  }\n};\nvar BTreeV1 = class extends AbstractBTree {\n  B_LINK_NODE = /* @__PURE__ */ new Map([\n    [\"signature\", \"4s\"],\n    [\"node_type\", \"B\"],\n    [\"node_level\", \"B\"],\n    [\"entries_used\", \"H\"],\n    [\"left_sibling\", \"Q\"],\n    [\"right_sibling\", \"Q\"]\n  ]);\n  async _read_node_header(offset, node_level) {\n    let node = await _unpack_struct_from_async(this.B_LINK_NODE, this.fh, offset);\n    if (node_level != null) {\n      if (node.get(\"node_level\") != node_level) {\n        throw \"node level does not match\";\n      }\n    }\n    return node;\n  }\n};\nvar BTreeV1Groups = class extends BTreeV1 {\n  NODE_TYPE = 0;\n  constructor(fh, offset) {\n    super(fh, offset);\n    this.ready = this.init();\n  }\n  async _read_node(offset, node_level) {\n    let node = await this._read_node_header(offset, node_level);\n    offset += _structure_size(this.B_LINK_NODE);\n    let keys = [];\n    let addresses = [];\n    let entries_used = node.get(\"entries_used\");\n    for (var i = 0; i < entries_used; i++) {\n      let key = (await struct.unpack_from_async(\"<Q\", this.fh, offset))[0];\n      offset += 8;\n      let address = (await struct.unpack_from_async(\"<Q\", this.fh, offset))[0];\n      offset += 8;\n      keys.push(key);\n      addresses.push(address);\n    }\n    keys.push((await struct.unpack_from_async(\"<Q\", this.fh, offset))[0]);\n    node.set(\"keys\", keys);\n    node.set(\"addresses\", addresses);\n    return node;\n  }\n  symbol_table_addresses() {\n    var all_address = [];\n    var root_nodes = this.all_nodes.get(0);\n    for (var node of root_nodes) {\n      all_address = all_address.concat(node.get(\"addresses\"));\n    }\n    return all_address;\n  }\n};\nvar BTreeV1RawDataChunks = class extends BTreeV1 {\n  NODE_TYPE = 1;\n  constructor(fh, offset, dims) {\n    super(fh, offset);\n    this.dims = dims;\n    this.ready = this.init();\n  }\n  async _read_node(offset, node_level) {\n    let node = await this._read_node_header(offset, node_level);\n    offset += _structure_size(this.B_LINK_NODE);\n    var keys = [];\n    var addresses = [];\n    let entries_used = node.get(\"entries_used\");\n    for (var i = 0; i < entries_used; i++) {\n      let [chunk_size, filter_mask] = await struct.unpack_from_async(\"<II\", this.fh, offset);\n      offset += 8;\n      let fmt = \"<\" + this.dims.toFixed() + \"Q\";\n      let fmt_size = struct.calcsize(fmt);\n      let chunk_offset = await struct.unpack_from_async(fmt, this.fh, offset);\n      offset += fmt_size;\n      let chunk_address = (await struct.unpack_from_async(\"<Q\", this.fh, offset))[0];\n      offset += 8;\n      keys.push(/* @__PURE__ */ new Map([\n        [\"chunk_size\", chunk_size],\n        [\"filter_mask\", filter_mask],\n        [\"chunk_offset\", chunk_offset]\n      ]));\n      addresses.push(chunk_address);\n    }\n    node.set(\"keys\", keys);\n    node.set(\"addresses\", addresses);\n    return node;\n  }\n  async construct_data_from_chunks(chunk_shape, data_shape, dtype, filter_pipeline) {\n    var item_getter, item_big_endian, item_size;\n    if (dtype instanceof Array) {\n      let dtype_class = dtype[0];\n      if (dtype_class == \"REFERENCE\") {\n        let size = dtype[1];\n        if (size != 8) {\n          throw \"NotImplementedError('Unsupported Reference type')\";\n        }\n        var dtype = \"<u8\";\n        item_getter = \"getUint64\";\n        item_big_endian = false;\n        item_size = 8;\n      } else if (dtype_class == \"VLEN_STRING\" || dtype_class == \"VLEN_SEQUENCE\") {\n        item_getter = \"getVLENStruct\";\n        item_big_endian = false;\n        item_size = 16;\n      } else {\n        throw \"NotImplementedError('datatype not implemented')\";\n      }\n    } else {\n      [item_getter, item_big_endian, item_size] = dtype_getter(dtype);\n    }\n    var data_size = data_shape.reduce(function(a, b) {\n      return a * b;\n    }, 1);\n    var chunk_size = chunk_shape.reduce(function(a, b) {\n      return a * b;\n    }, 1);\n    let dims = data_shape.length;\n    var current_stride = 1;\n    chunk_shape.slice().map(function(d2) {\n      let s = current_stride;\n      current_stride *= d2;\n      return s;\n    });\n    var current_stride = 1;\n    var data_strides = data_shape.slice().reverse().map(function(d2) {\n      let s = current_stride;\n      current_stride *= d2;\n      return s;\n    }).reverse();\n    var data = new Array(data_size);\n    let chunk_buffer_size = chunk_size * item_size;\n    for (var node of this.all_nodes.get(0)) {\n      let node_keys = node.get(\"keys\");\n      let node_addresses = node.get(\"addresses\");\n      let nkeys = node_keys.length;\n      for (var ik = 0; ik < nkeys; ik++) {\n        let node_key = node_keys[ik];\n        let addr = node_addresses[ik];\n        var chunk_buffer;\n        if (filter_pipeline == null) {\n          chunk_buffer = await this.fh.slice(addr, addr + chunk_buffer_size);\n        } else {\n          chunk_buffer = await this.fh.slice(addr, addr + node_key.get(\"chunk_size\"));\n          let filter_mask = node_key.get(\"filter_mask\");\n          chunk_buffer = this._filter_chunk(chunk_buffer, filter_mask, filter_pipeline, item_size);\n        }\n        var chunk_offset = node_key.get(\"chunk_offset\").slice();\n        var apos = chunk_offset.slice();\n        var cpos = apos.map(function() {\n          return 0;\n        });\n        var cview = new DataView64(chunk_buffer);\n        for (var ci = 0; ci < chunk_size; ci++) {\n          for (var d = dims - 1; d >= 0; d--) {\n            if (cpos[d] >= chunk_shape[d]) {\n              cpos[d] = 0;\n              apos[d] = chunk_offset[d];\n              if (d > 0) {\n                cpos[d - 1] += 1;\n                apos[d - 1] += 1;\n              }\n            } else {\n              break;\n            }\n          }\n          let inbounds = apos.slice(0, -1).every(function(p, d2) {\n            return p < data_shape[d2];\n          });\n          if (inbounds) {\n            let cb_offset = ci * item_size;\n            let datum = cview[item_getter](cb_offset, !item_big_endian, item_size);\n            let ai = apos.slice(0, -1).reduce(function(prev, curr, index) {\n              return curr * data_strides[index] + prev;\n            }, 0);\n            data[ai] = datum;\n          }\n          cpos[dims - 1] += 1;\n          apos[dims - 1] += 1;\n        }\n      }\n    }\n    return data;\n  }\n  _filter_chunk(chunk_buffer, filter_mask, filter_pipeline, itemsize) {\n    let num_filters = filter_pipeline.length;\n    let buf = chunk_buffer.slice();\n    for (var filter_index = num_filters - 1; filter_index >= 0; filter_index--) {\n      if (filter_mask & 1 << filter_index) {\n        continue;\n      }\n      let pipeline_entry = filter_pipeline[filter_index];\n      let filter_id = pipeline_entry.get(\"filter_id\");\n      let client_data = pipeline_entry.get(\"client_data\");\n      if (Filters.has(filter_id)) {\n        buf = Filters.get(filter_id)(buf, itemsize, client_data);\n      } else {\n        throw 'NotImplementedError(\"Filter with id:' + filter_id.toFixed() + ' not supported\")';\n      }\n    }\n    return buf;\n  }\n};\nvar BTreeV2 = class extends AbstractBTree {\n  B_TREE_HEADER = /* @__PURE__ */ new Map([\n    [\"signature\", \"4s\"],\n    [\"version\", \"B\"],\n    [\"node_type\", \"B\"],\n    [\"node_size\", \"I\"],\n    [\"record_size\", \"H\"],\n    [\"depth\", \"H\"],\n    [\"split_percent\", \"B\"],\n    [\"merge_percent\", \"B\"],\n    [\"root_address\", \"Q\"],\n    [\"root_nrecords\", \"H\"],\n    [\"total_nrecords\", \"Q\"]\n  ]);\n  B_LINK_NODE = /* @__PURE__ */ new Map([\n    [\"signature\", \"4s\"],\n    [\"version\", \"B\"],\n    [\"node_type\", \"B\"]\n  ]);\n  constructor(fh, offset) {\n    super(fh, offset);\n    this.ready = this.init();\n  }\n  async _read_root_node() {\n    let h = await this._read_tree_header(this.offset);\n    this.address_formats = this._calculate_address_formats(h);\n    this.header = h;\n    this.depth = h.get(\"depth\");\n    let address = [h.get(\"root_address\"), h.get(\"root_nrecords\"), h.get(\"total_nrecords\")];\n    let root_node = await this._read_node(address, this.depth);\n    this._add_node(root_node);\n  }\n  async _read_tree_header(offset) {\n    let header = await _unpack_struct_from_async(this.B_TREE_HEADER, this.fh, this.offset);\n    return header;\n  }\n  _calculate_address_formats(header) {\n    let node_size = header.get(\"node_size\");\n    let record_size = header.get(\"record_size\");\n    let nrecords_max = 0;\n    let ntotalrecords_max = 0;\n    let address_formats = /* @__PURE__ */ new Map();\n    let max_depth = header.get(\"depth\");\n    for (var node_level = 0; node_level <= max_depth; node_level++) {\n      let offset_fmt = \"\";\n      let num1_fmt = \"\";\n      let num2_fmt = \"\";\n      let offset_size, num1_size, num2_size;\n      if (node_level == 0) {\n        offset_size = 0;\n        num1_size = 0;\n        num2_size = 0;\n      } else if (node_level == 1) {\n        offset_size = 8;\n        offset_fmt = \"<Q\";\n        num1_size = this._required_bytes(nrecords_max);\n        num1_fmt = this._int_format(num1_size);\n        num2_size = 0;\n      } else {\n        offset_size = 8;\n        offset_fmt = \"<Q\";\n        num1_size = this._required_bytes(nrecords_max);\n        num1_fmt = this._int_format(num1_size);\n        num2_size = this._required_bytes(ntotalrecords_max);\n        num2_fmt = this._int_format(num2_size);\n      }\n      address_formats.set(node_level, [\n        offset_size,\n        num1_size,\n        num2_size,\n        offset_fmt,\n        num1_fmt,\n        num2_fmt\n      ]);\n      if (node_level < max_depth) {\n        let addr_size = offset_size + num1_size + num2_size;\n        nrecords_max = this._nrecords_max(node_size, record_size, addr_size);\n        if (ntotalrecords_max > 0) {\n          ntotalrecords_max *= nrecords_max;\n        } else {\n          ntotalrecords_max = nrecords_max;\n        }\n      }\n    }\n    return address_formats;\n  }\n  _nrecords_max(node_size, record_size, addr_size) {\n    return Math.floor((node_size - 10 - addr_size) / (record_size + addr_size));\n  }\n  _required_bytes(integer) {\n    return Math.ceil(bitSize(integer) / 8);\n  }\n  _int_format(bytelength) {\n    return [\"<B\", \"<H\", \"<I\", \"<Q\"][bytelength - 1];\n  }\n  async _read_node(address, node_level) {\n    let [offset, nrecords, ntotalrecords] = address;\n    let node = this._read_node_header(offset, node_level);\n    offset += _structure_size(this.B_LINK_NODE);\n    let record_size = this.header.get(\"record_size\");\n    let keys = [];\n    for (let i = 0; i < nrecords; i++) {\n      let record = await this._parse_record(this.fh, offset, record_size);\n      offset += record_size;\n      keys.push(record);\n    }\n    let addresses = [];\n    let fmts = this.address_formats.get(node_level);\n    if (node_level != 0) {\n      let [offset_size, num1_size, num2_size, offset_fmt, num1_fmt, num2_fmt] = fmts;\n      for (let j = 0; j <= nrecords; j++) {\n        let address_offset = (await struct.unpack_from_async(offset_fmt, this.fh, offset))[0];\n        offset += offset_size;\n        let num1 = (await struct.unpack_from_async(num1_fmt, this.fh, offset))[0];\n        offset += num1_size;\n        let num2 = num1;\n        if (num2_size > 0) {\n          num2 = (await struct.unpack_from_async(num2_fmt, this.fh, offset))[0];\n          offset += num2_size;\n        }\n        addresses.push([address_offset, num1, num2]);\n      }\n    }\n    node.set(\"keys\", keys);\n    node.set(\"addresses\", addresses);\n    return node;\n  }\n  async _read_node_header(offset, node_level) {\n    let node = await _unpack_struct_from_async(this.B_LINK_NODE, this.fh, offset);\n    node.set(\"node_level\", node_level);\n    return node;\n  }\n  *iter_records() {\n    for (let nodelist of this.all_nodes.values()) {\n      for (let node of nodelist) {\n        for (let key of node.get(\"keys\")) {\n          yield key;\n        }\n      }\n    }\n  }\n  _parse_record(record) {\n    throw \"NotImplementedError\";\n  }\n};\nvar BTreeV2GroupNames = class extends BTreeV2 {\n  NODE_TYPE = 5;\n  async _parse_record(buf, offset, size) {\n    let namehash = (await struct.unpack_from_async(\"<I\", buf, offset))[0];\n    offset += 4;\n    const heapid = await buf.slice(offset, offset + 7);\n    return /* @__PURE__ */ new Map([[\"namehash\", namehash], [\"heapid\", heapid]]);\n  }\n};\nvar BTreeV2GroupOrders = class extends BTreeV2 {\n  NODE_TYPE = 6;\n  async _parse_record(buf, offset, size) {\n    let creationorder = (await struct.unpack_from_async(\"<Q\", buf, offset))[0];\n    offset += 8;\n    const heapid = await buf.slice(offset, offset + 7);\n    return /* @__PURE__ */ new Map([[\"creationorder\", creationorder], [\"heapid\", heapid]]);\n  }\n};\n\n// esm/misc-low-level.js\nvar SuperBlock = class {\n  constructor(fh, offset) {\n    this.ready = this.init(fh, offset);\n  }\n  async init(fh, offset) {\n    let version_hint = await struct.unpack_from_async(\"<B\", fh, offset + 8);\n    var contents;\n    if (version_hint == 0) {\n      contents = await _unpack_struct_from_async(SUPERBLOCK_V0, fh, offset);\n      this._end_of_sblock = offset + SUPERBLOCK_V0_SIZE;\n    } else if (version_hint == 2 || version_hint == 3) {\n      contents = await _unpack_struct_from_async(SUPERBLOCK_V2_V3, fh, offset);\n      this._end_of_sblock = offset + SUPERBLOCK_V2_V3_SIZE;\n    } else {\n      throw \"unsupported superblock version: \" + version_hint.toFixed();\n    }\n    if (contents.get(\"format_signature\") != FORMAT_SIGNATURE) {\n      throw \"Incorrect file signature: \" + contents.get(\"format_signature\");\n    }\n    if (contents.get(\"offset_size\") != 8 || contents.get(\"length_size\") != 8) {\n      throw \"File uses non-64-bit addressing\";\n    }\n    this.version = contents.get(\"superblock_version\");\n    this._contents = contents;\n    this._root_symbol_table = null;\n    this._fh = fh;\n  }\n  async get_offset_to_dataobjects() {\n    if (this.version == 0) {\n      var sym_table = new SymbolTable(this._fh, this._end_of_sblock, true);\n      await sym_table.ready;\n      this._root_symbol_table = sym_table;\n      return sym_table.group_offset;\n    } else if (this.version == 2 || this.version == 3) {\n      return this._contents.get(\"root_group_address\");\n    } else {\n      throw \"Not implemented version = \" + this.version.toFixed();\n    }\n  }\n};\nvar Heap = class {\n  constructor(fh, offset) {\n    this.ready = this.init(fh, offset);\n  }\n  async init(fh, offset) {\n    let local_heap = await _unpack_struct_from_async(LOCAL_HEAP, fh, offset);\n    assert(local_heap.get(\"signature\") == \"HEAP\");\n    assert(local_heap.get(\"version\") == 0);\n    let data_offset = local_heap.get(\"address_of_data_segment\");\n    let heap_data = await fh.slice(data_offset, data_offset + local_heap.get(\"data_segment_size\"));\n    local_heap.set(\"heap_data\", heap_data);\n    this._contents = local_heap;\n    this.data = heap_data;\n  }\n  get_object_name(offset) {\n    let end = new Uint8Array(this.data).indexOf(0, offset);\n    let name_size = end - offset;\n    let name = struct.unpack_from(\"<\" + name_size.toFixed() + \"s\", this.data, offset)[0];\n    return name;\n  }\n};\nvar SymbolTable = class {\n  constructor(fh, offset, root = false) {\n    this.ready = this.init(fh, offset, root);\n  }\n  async init(fh, offset, root) {\n    var node;\n    if (root) {\n      node = /* @__PURE__ */ new Map([[\"symbols\", 1]]);\n    } else {\n      node = await _unpack_struct_from_async(SYMBOL_TABLE_NODE, fh, offset);\n      if (node.get(\"signature\") != \"SNOD\") {\n        throw \"incorrect node type\";\n      }\n      offset += SYMBOL_TABLE_NODE_SIZE;\n    }\n    var entries = [];\n    var n_symbols = node.get(\"symbols\");\n    for (var i = 0; i < n_symbols; i++) {\n      entries.push(await _unpack_struct_from_async(SYMBOL_TABLE_ENTRY, fh, offset));\n      offset += SYMBOL_TABLE_ENTRY_SIZE;\n    }\n    if (root) {\n      this.group_offset = entries[0].get(\"object_header_address\");\n    }\n    this.entries = entries;\n    this._contents = node;\n    return this;\n  }\n  assign_name(heap) {\n    this.entries.forEach(function(entry) {\n      let offset = entry.get(\"link_name_offset\");\n      let link_name = heap.get_object_name(offset);\n      entry.set(\"link_name\", link_name);\n    });\n  }\n  get_links(heap) {\n    var links = {};\n    this.entries.forEach(function(e) {\n      let cache_type = e.get(\"cache_type\");\n      let link_name = e.get(\"link_name\");\n      if (cache_type == 0 || cache_type == 1) {\n        links[link_name] = e.get(\"object_header_address\");\n      } else if (cache_type == 2) {\n        let scratch = e.get(\"scratch\");\n        let buf = new ArrayBuffer(4);\n        let bufView = new Uint8Array(buf);\n        for (var i = 0; i < 4; i++) {\n          bufView[i] = scratch.charCodeAt(i);\n        }\n        let offset = struct.unpack_from(\"<I\", buf, 0)[0];\n        links[link_name] = heap.get_object_name(offset);\n      }\n    });\n    return links;\n  }\n};\nvar GlobalHeap = class {\n  constructor(fh, offset) {\n    this.ready = this.init(fh, offset);\n  }\n  async init(fh, offset) {\n    let header = await _unpack_struct_from_async(GLOBAL_HEAP_HEADER, fh, offset);\n    offset += GLOBAL_HEAP_HEADER_SIZE;\n    let heap_data_size = header.get(\"collection_size\") - GLOBAL_HEAP_HEADER_SIZE;\n    let heap_data = await fh.slice(offset, offset + heap_data_size);\n    this.heap_data = heap_data;\n    this._header = header;\n    this._objects = null;\n  }\n  get objects() {\n    if (this._objects == null) {\n      this._objects = /* @__PURE__ */ new Map();\n      var offset = 0;\n      while (offset <= this.heap_data.byteLength - GLOBAL_HEAP_OBJECT_SIZE) {\n        let info = _unpack_struct_from(GLOBAL_HEAP_OBJECT, this.heap_data, offset);\n        if (info.get(\"object_index\") == 0) {\n          break;\n        }\n        offset += GLOBAL_HEAP_OBJECT_SIZE;\n        let obj_data = this.heap_data.slice(offset, offset + info.get(\"object_size\"));\n        this._objects.set(info.get(\"object_index\"), obj_data);\n        offset += _padded_size(info.get(\"object_size\"));\n      }\n    }\n    return this._objects;\n  }\n};\nvar FractalHeap = class {\n  constructor(fh, offset) {\n    this.fh = fh;\n    this.ready = this.init(offset);\n  }\n  async init(offset) {\n    let header = await _unpack_struct_from_async(FRACTAL_HEAP_HEADER, this.fh, offset);\n    offset += _structure_size(FRACTAL_HEAP_HEADER);\n    assert(header.get(\"signature\") == \"FRHP\");\n    assert(header.get(\"version\") == 0);\n    if (header.get(\"filter_info_size\") > 0) {\n      throw \"Filter info size not supported on FractalHeap\";\n    }\n    if (header.get(\"btree_address_huge_objects\") == UNDEFINED_ADDRESS) {\n      header.set(\"btree_address_huge_objects\", null);\n    } else {\n      throw \"Huge objects not implemented in FractalHeap\";\n    }\n    if (header.get(\"root_block_address\") == UNDEFINED_ADDRESS) {\n      header.set(\"root_block_address\", null);\n    }\n    let nbits = header.get(\"log2_maximum_heap_size\");\n    let block_offset_size = this._min_size_nbits(nbits);\n    let h = /* @__PURE__ */ new Map([\n      [\"signature\", \"4s\"],\n      [\"version\", \"B\"],\n      [\"heap_header_adddress\", \"Q\"],\n      [\"block_offset\", `${block_offset_size}B`]\n    ]);\n    this.indirect_block_header = new Map(h);\n    this.indirect_block_header_size = _structure_size(h);\n    if ((header.get(\"flags\") & 2) == 2) {\n      h.set(\"checksum\", \"I\");\n    }\n    this.direct_block_header = h;\n    this.direct_block_header_size = _structure_size(h);\n    let maximum_dblock_size = header.get(\"maximum_direct_block_size\");\n    this._managed_object_offset_size = this._min_size_nbits(nbits);\n    let value = Math.min(maximum_dblock_size, header.get(\"max_managed_object_size\"));\n    this._managed_object_length_size = this._min_size_integer(value);\n    let start_block_size = header.get(\"starting_block_size\");\n    let table_width = header.get(\"table_width\");\n    if (!(start_block_size > 0)) {\n      throw \"Starting block size == 0 not implemented\";\n    }\n    let log2_maximum_dblock_size = Number(Math.floor(Math.log2(maximum_dblock_size)));\n    assert(1n << BigInt(log2_maximum_dblock_size) == maximum_dblock_size);\n    let log2_start_block_size = Number(Math.floor(Math.log2(start_block_size)));\n    assert(1n << BigInt(log2_start_block_size) == start_block_size);\n    this._max_direct_nrows = log2_maximum_dblock_size - log2_start_block_size + 2;\n    let log2_table_width = Math.floor(Math.log2(table_width));\n    assert(1 << log2_table_width == table_width);\n    this._indirect_nrows_sub = log2_table_width + log2_start_block_size - 1;\n    this.header = header;\n    this.nobjects = header.get(\"managed_object_count\") + header.get(\"huge_object_count\") + header.get(\"tiny_object_count\");\n    let managed = [];\n    let root_address = header.get(\"root_block_address\");\n    let nrows = 0;\n    if (root_address != null) {\n      nrows = header.get(\"indirect_current_rows_count\");\n    }\n    if (nrows > 0) {\n      for await (let data of this._iter_indirect_block(this.fh, root_address, nrows)) {\n        managed.push(data);\n      }\n    } else {\n      let data = await this._read_direct_block(this.fh, root_address, start_block_size);\n      managed.push(data);\n    }\n    let data_size = managed.reduce((p, c) => p + c.byteLength, 0);\n    let combined = new Uint8Array(data_size);\n    let moffset = 0;\n    managed.forEach((m) => {\n      combined.set(new Uint8Array(m), moffset);\n      moffset += m.byteLength;\n    });\n    this.managed = combined.buffer;\n  }\n  async _read_direct_block(fh, offset, block_size) {\n    let data = await fh.slice(offset, offset + block_size);\n    let header = _unpack_struct_from(this.direct_block_header, data);\n    assert(header.get(\"signature\") == \"FHDB\");\n    return data;\n  }\n  get_data(heapid) {\n    let firstbyte = struct.unpack_from(\"<B\", heapid, 0)[0];\n    let idtype = firstbyte >> 4 & 3;\n    let version = firstbyte >> 6;\n    let data_offset = 1;\n    if (idtype == 0) {\n      assert(version == 0);\n      let nbytes = this._managed_object_offset_size;\n      let offset = _unpack_integer(nbytes, heapid, data_offset);\n      data_offset += nbytes;\n      nbytes = this._managed_object_length_size;\n      let size = _unpack_integer(nbytes, heapid, data_offset);\n      return this.managed.slice(offset, offset + size);\n    } else if (idtype == 1) {\n      throw \"tiny objectID not supported in FractalHeap\";\n    } else if (idtype == 2) {\n      throw \"huge objectID not supported in FractalHeap\";\n    } else {\n      throw \"unknown objectID type in FractalHeap\";\n    }\n  }\n  _min_size_integer(integer) {\n    return this._min_size_nbits(bitSize(integer));\n  }\n  _min_size_nbits(nbits) {\n    return Math.ceil(nbits / 8);\n  }\n  async *_iter_indirect_block(fh, offset, nrows) {\n    let header = await _unpack_struct_from_async(this.indirect_block_header, fh, offset);\n    offset += this.indirect_block_header_size;\n    assert(header.get(\"signature\") == \"FHIB\");\n    let block_offset_bytes = header.get(\"block_offset\");\n    let block_offset = block_offset_bytes.reduce((p, c, i) => p + (c << i * 8), 0);\n    header.set(\"block_offset\", block_offset);\n    let [ndirect, nindirect] = this._indirect_info(nrows);\n    let direct_blocks = [];\n    for (let i = 0; i < ndirect; i++) {\n      let address = (await struct.unpack_from_async(\"<Q\", fh, offset))[0];\n      offset += 8;\n      if (address == UNDEFINED_ADDRESS) {\n        break;\n      }\n      let block_size = this._calc_block_size(i);\n      direct_blocks.push([address, block_size]);\n    }\n    let indirect_blocks = [];\n    for (let i = ndirect; i < ndirect + nindirect; i++) {\n      let address = (await struct.unpack_from_async(\"<Q\", fh, offset))[0];\n      offset += 8;\n      if (address == UNDEFINED_ADDRESS) {\n        break;\n      }\n      let block_size = this._calc_block_size(i);\n      let nrows2 = this._iblock_nrows_from_block_size(block_size);\n      indirect_blocks.push([address, nrows2]);\n    }\n    for (let [address, block_size] of direct_blocks) {\n      let obj = await this._read_direct_block(fh, address, block_size);\n      yield obj;\n    }\n    for (let [address, nrows2] of indirect_blocks) {\n      for await (let obj of this._iter_indirect_block(fh, address, nrows2)) {\n        yield obj;\n      }\n    }\n  }\n  _calc_block_size(iblock) {\n    let row = Math.floor(iblock / this.header.get(\"table_width\"));\n    return 2 ** Math.max(row - 1, 0) * this.header.get(\"starting_block_size\");\n  }\n  _iblock_nrows_from_block_size(block_size) {\n    let log2_block_size = Math.floor(Math.log2(block_size));\n    assert(2 ** log2_block_size == block_size);\n    return log2_block_size - this._indirect_nrows_sub;\n  }\n  _indirect_info(nrows) {\n    let table_width = this.header.get(\"table_width\");\n    let nobjects = nrows * table_width;\n    let ndirect_max = this._max_direct_nrows * table_width;\n    let ndirect, nindirect;\n    if (nrows <= ndirect_max) {\n      ndirect = nobjects;\n      nindirect = 0;\n    } else {\n      ndirect = ndirect_max;\n      nindirect = nobjects - ndirect_max;\n    }\n    return [ndirect, nindirect];\n  }\n  _int_format(bytelength) {\n    return [\"B\", \"H\", \"I\", \"Q\"][bytelength - 1];\n  }\n};\nvar FORMAT_SIGNATURE = struct.unpack_from(\"8s\", new Uint8Array([137, 72, 68, 70, 13, 10, 26, 10]).buffer)[0];\nvar UNDEFINED_ADDRESS = struct.unpack_from(\"<Q\", new Uint8Array([255, 255, 255, 255, 255, 255, 255, 255]).buffer)[0];\nvar SUPERBLOCK_V0 = /* @__PURE__ */ new Map([\n  [\"format_signature\", \"8s\"],\n  [\"superblock_version\", \"B\"],\n  [\"free_storage_version\", \"B\"],\n  [\"root_group_version\", \"B\"],\n  [\"reserved_0\", \"B\"],\n  [\"shared_header_version\", \"B\"],\n  [\"offset_size\", \"B\"],\n  [\"length_size\", \"B\"],\n  [\"reserved_1\", \"B\"],\n  [\"group_leaf_node_k\", \"H\"],\n  [\"group_internal_node_k\", \"H\"],\n  [\"file_consistency_flags\", \"L\"],\n  [\"base_address_lower\", \"Q\"],\n  [\"free_space_address\", \"Q\"],\n  [\"end_of_file_address\", \"Q\"],\n  [\"driver_information_address\", \"Q\"]\n]);\nvar SUPERBLOCK_V0_SIZE = _structure_size(SUPERBLOCK_V0);\nvar SUPERBLOCK_V2_V3 = /* @__PURE__ */ new Map([\n  [\"format_signature\", \"8s\"],\n  [\"superblock_version\", \"B\"],\n  [\"offset_size\", \"B\"],\n  [\"length_size\", \"B\"],\n  [\"file_consistency_flags\", \"B\"],\n  [\"base_address\", \"Q\"],\n  [\"superblock_extension_address\", \"Q\"],\n  [\"end_of_file_address\", \"Q\"],\n  [\"root_group_address\", \"Q\"],\n  [\"superblock_checksum\", \"I\"]\n]);\nvar SUPERBLOCK_V2_V3_SIZE = _structure_size(SUPERBLOCK_V2_V3);\nvar SYMBOL_TABLE_ENTRY = /* @__PURE__ */ new Map([\n  [\"link_name_offset\", \"Q\"],\n  [\"object_header_address\", \"Q\"],\n  [\"cache_type\", \"I\"],\n  [\"reserved\", \"I\"],\n  [\"scratch\", \"16s\"]\n]);\nvar SYMBOL_TABLE_ENTRY_SIZE = _structure_size(SYMBOL_TABLE_ENTRY);\nvar SYMBOL_TABLE_NODE = /* @__PURE__ */ new Map([\n  [\"signature\", \"4s\"],\n  [\"version\", \"B\"],\n  [\"reserved_0\", \"B\"],\n  [\"symbols\", \"H\"]\n]);\nvar SYMBOL_TABLE_NODE_SIZE = _structure_size(SYMBOL_TABLE_NODE);\nvar LOCAL_HEAP = /* @__PURE__ */ new Map([\n  [\"signature\", \"4s\"],\n  [\"version\", \"B\"],\n  [\"reserved\", \"3s\"],\n  [\"data_segment_size\", \"Q\"],\n  [\"offset_to_free_list\", \"Q\"],\n  [\"address_of_data_segment\", \"Q\"]\n]);\nvar GLOBAL_HEAP_HEADER = /* @__PURE__ */ new Map([\n  [\"signature\", \"4s\"],\n  [\"version\", \"B\"],\n  [\"reserved\", \"3s\"],\n  [\"collection_size\", \"Q\"]\n]);\nvar GLOBAL_HEAP_HEADER_SIZE = _structure_size(GLOBAL_HEAP_HEADER);\nvar GLOBAL_HEAP_OBJECT = /* @__PURE__ */ new Map([\n  [\"object_index\", \"H\"],\n  [\"reference_count\", \"H\"],\n  [\"reserved\", \"I\"],\n  [\"object_size\", \"Q\"]\n]);\nvar GLOBAL_HEAP_OBJECT_SIZE = _structure_size(GLOBAL_HEAP_OBJECT);\nvar FRACTAL_HEAP_HEADER = /* @__PURE__ */ new Map([\n  [\"signature\", \"4s\"],\n  [\"version\", \"B\"],\n  [\"object_index_size\", \"H\"],\n  [\"filter_info_size\", \"H\"],\n  [\"flags\", \"B\"],\n  [\"max_managed_object_size\", \"I\"],\n  [\"next_huge_object_index\", \"Q\"],\n  [\"btree_address_huge_objects\", \"Q\"],\n  [\"managed_freespace_size\", \"Q\"],\n  [\"freespace_manager_address\", \"Q\"],\n  [\"managed_space_size\", \"Q\"],\n  [\"managed_alloc_size\", \"Q\"],\n  [\"next_directblock_iterator_address\", \"Q\"],\n  [\"managed_object_count\", \"Q\"],\n  [\"huge_objects_total_size\", \"Q\"],\n  [\"huge_object_count\", \"Q\"],\n  [\"tiny_objects_total_size\", \"Q\"],\n  [\"tiny_object_count\", \"Q\"],\n  [\"table_width\", \"H\"],\n  [\"starting_block_size\", \"Q\"],\n  [\"maximum_direct_block_size\", \"Q\"],\n  [\"log2_maximum_heap_size\", \"H\"],\n  [\"indirect_starting_rows_count\", \"H\"],\n  [\"root_block_address\", \"Q\"],\n  [\"indirect_current_rows_count\", \"H\"]\n]);\n\n// esm/dataobjects.js\nvar DataObjects = class {\n  constructor(fh, offset) {\n    this.ready = this.init(fh, offset);\n  }\n  async init(fh, offset) {\n    let version_hint = (await struct.unpack_from_async(\"<B\", fh, offset))[0];\n    if (version_hint == 1) {\n      var [msgs, msg_data, header] = await this._parse_v1_objects(fh, offset);\n    } else if (version_hint == \"O\".charCodeAt(0)) {\n      var [msgs, msg_data, header] = await this._parse_v2_objects(fh, offset);\n    } else {\n      throw \"InvalidHDF5File('unknown Data Object Header')\";\n    }\n    this.fh = fh;\n    this.msgs = msgs;\n    this.msg_data = msg_data;\n    this.offset = offset;\n    this._global_heaps = {};\n    this._header = header;\n    this._filter_pipeline = null;\n    this._chunk_params_set = false;\n    this._chunks = null;\n    this._chunk_dims = null;\n    this._chunk_address = null;\n  }\n  get dtype() {\n    let msg = this.find_msg_type(DATATYPE_MSG_TYPE)[0];\n    let msg_offset = msg.get(\"offset_to_message\");\n    return new DatatypeMessage(this.fh, msg_offset).dtype;\n  }\n  get chunks() {\n    return this._get_chunk_params().then(() => {\n      return this._chunks;\n    });\n  }\n  get shape() {\n    let msg = this.find_msg_type(DATASPACE_MSG_TYPE)[0];\n    let msg_offset = msg.get(\"offset_to_message\");\n    return determine_data_shape(this.fh, msg_offset);\n  }\n  async get_filter_pipeline() {\n    if (this._filter_pipeline != null) {\n      return this._filter_pipeline;\n    }\n    let filter_msgs = this.find_msg_type(DATA_STORAGE_FILTER_PIPELINE_MSG_TYPE);\n    if (!filter_msgs.length) {\n      this._filter_pipeline = null;\n      return this._filter_pipeline;\n    }\n    var offset = filter_msgs[0].get(\"offset_to_message\");\n    let [version, nfilters] = await struct.unpack_from_async(\"<BB\", this.fh, offset);\n    offset += struct.calcsize(\"<BB\");\n    var filters = [];\n    if (version == 1) {\n      await struct.unpack_from_async(\"<HI\", this.fh, offset);\n      offset += struct.calcsize(\"<HI\");\n      for (var _ = 0; _ < nfilters; _++) {\n        let filter_info = await _unpack_struct_from_async(FILTER_PIPELINE_DESCR_V1, this.fh, offset);\n        offset += FILTER_PIPELINE_DESCR_V1_SIZE;\n        let padded_name_length = _padded_size(filter_info.get(\"name_length\"), 8);\n        let fmt = \"<\" + padded_name_length.toFixed() + \"s\";\n        let filter_name = (await struct.unpack_from_async(fmt, this.fh, offset))[0];\n        filter_info.set(\"filter_name\", filter_name);\n        offset += padded_name_length;\n        fmt = \"<\" + filter_info.get(\"client_data_values\").toFixed() + \"I\";\n        let client_data = await struct.unpack_from_async(fmt, this.fh, offset);\n        filter_info.set(\"client_data\", client_data);\n        offset += 4 * filter_info.get(\"client_data_values\");\n        if (filter_info.get(\"client_data_values\") % 2) {\n          offset += 4;\n        }\n        filters.push(filter_info);\n      }\n    } else if (version == 2) {\n      for (let nf = 0; nf < nfilters; nf++) {\n        let filter_info = /* @__PURE__ */ new Map();\n        let buf = this.fh;\n        let filter_id = (await struct.unpack_from_async(\"<H\", buf, offset))[0];\n        offset += 2;\n        filter_info.set(\"filter_id\", filter_id);\n        let name_length = 0;\n        if (filter_id > 255) {\n          name_length = (await struct.unpack_from_async(\"<H\", buf, offset))[0];\n          offset += 2;\n        }\n        let flags = (await struct.unpack_from_async(\"<H\", buf, offset))[0];\n        offset += 2;\n        let optional = (flags & 1) > 0;\n        filter_info.set(\"optional\", optional);\n        let num_client_values = (await struct.unpack_from_async(\"<H\", buf, offset))[0];\n        offset += 2;\n        let name;\n        if (name_length > 0) {\n          name = (await struct.unpack_from_async(`${name_length}s`, buf, offset))[0];\n          offset += name_length;\n        }\n        filter_info.set(\"name\", name);\n        let client_values = await struct.unpack_from_async(`<${num_client_values}i`, buf, offset);\n        offset += 4 * num_client_values;\n        filter_info.set(\"client_data_values\", client_values);\n        filters.push(filter_info);\n      }\n    } else {\n      throw `version ${version} is not supported`;\n    }\n    this._filter_pipeline = filters;\n    return this._filter_pipeline;\n  }\n  find_msg_type(msg_type) {\n    return this.msgs.filter(function(m) {\n      return m.get(\"type\") == msg_type;\n    });\n  }\n  async get_attributes() {\n    let attrs = {};\n    let attr_msgs = this.find_msg_type(ATTRIBUTE_MSG_TYPE);\n    for (let msg of attr_msgs) {\n      let offset = msg.get(\"offset_to_message\");\n      let [name, value] = await this.unpack_attribute(offset);\n      attrs[name] = value;\n    }\n    return attrs;\n  }\n  async get_fillvalue() {\n    let msg = this.find_msg_type(FILLVALUE_MSG_TYPE)[0];\n    var offset = msg.get(\"offset_to_message\");\n    var is_defined;\n    let version = (await struct.unpack_from_async(\"<B\", this.fh, offset))[0];\n    var info, size, fillvalue;\n    if (version == 1 || version == 2) {\n      info = await _unpack_struct_from_async(FILLVAL_MSG_V1V2, this.fh, offset);\n      offset += FILLVAL_MSG_V1V2_SIZE;\n      is_defined = info.get(\"fillvalue_defined\");\n    } else if (version == 3) {\n      info = await _unpack_struct_from_async(FILLVAL_MSG_V3, this.fh, offset);\n      offset += FILLVAL_MSG_V3_SIZE;\n      is_defined = info.get(\"flags\") & 32;\n    } else {\n      throw 'InvalidHDF5File(\"Unknown fillvalue msg version: \"' + String(version);\n    }\n    if (is_defined) {\n      size = (await struct.unpack_from_async(\"<I\", this.fh, offset))[0];\n      offset += 4;\n    } else {\n      size = 0;\n    }\n    if (size) {\n      let [getter, big_endian, size2] = dtype_getter(await this.dtype);\n      let payload_view = new DataView64(await this.fh.slice(offset, offset + size2));\n      fillvalue = payload_view[getter](offset, !big_endian, size2);\n    } else {\n      fillvalue = 0;\n    }\n    return fillvalue;\n  }\n  async unpack_attribute(offset) {\n    let version = (await struct.unpack_from_async(\"<B\", this.fh, offset))[0];\n    var attr_map, padding_multiple;\n    if (version == 1) {\n      attr_map = await _unpack_struct_from_async(ATTR_MSG_HEADER_V1, this.fh, offset);\n      assert(attr_map.get(\"version\") == 1);\n      offset += ATTR_MSG_HEADER_V1_SIZE;\n      padding_multiple = 8;\n    } else if (version == 3) {\n      attr_map = await _unpack_struct_from_async(ATTR_MSG_HEADER_V3, this.fh, offset);\n      assert(attr_map.get(\"version\") == 3);\n      offset += ATTR_MSG_HEADER_V3_SIZE;\n      padding_multiple = 1;\n    } else {\n      throw \"unsupported attribute message version: \" + version;\n    }\n    let name_size = attr_map.get(\"name_size\");\n    let name = (await struct.unpack_from_async(\"<\" + name_size.toFixed() + \"s\", this.fh, offset))[0];\n    name = name.replace(/\\x00$/, \"\");\n    offset += _padded_size(name_size, padding_multiple);\n    var dtype;\n    try {\n      dtype = await new DatatypeMessage(this.fh, offset).dtype;\n    } catch (e) {\n      console.warn(\"Attribute \" + name + \" type not implemented, set to null.\");\n      return [name, null];\n    }\n    offset += _padded_size(attr_map.get(\"datatype_size\"), padding_multiple);\n    let shape = await this.determine_data_shape(this.fh, offset);\n    let items = shape.reduce(function(a, b) {\n      return a * b;\n    }, 1);\n    offset += _padded_size(attr_map.get(\"dataspace_size\"), padding_multiple);\n    if (dtype.datatype_class === 5) {\n      value = await this.fh.slice(offset, offset + dtype.size);\n    } else {\n      var value = await this._attr_value(dtype, this.fh, items, offset);\n      if (shape.length == 0) {\n        value = value[0];\n      }\n    }\n    return [name, value];\n  }\n  async determine_data_shape(buf, offset) {\n    let version = (await struct.unpack_from_async(\"<B\", buf, offset))[0];\n    var header;\n    if (version == 1) {\n      header = await _unpack_struct_from_async(DATASPACE_MSG_HEADER_V1, buf, offset);\n      assert(header.get(\"version\") == 1);\n      offset += DATASPACE_MSG_HEADER_V1_SIZE;\n    } else if (version == 2) {\n      header = await _unpack_struct_from_async(DATASPACE_MSG_HEADER_V2, buf, offset);\n      assert(header.get(\"version\") == 2);\n      offset += DATASPACE_MSG_HEADER_V2_SIZE;\n    } else {\n      throw \"unknown dataspace message version\";\n    }\n    let ndims = header.get(\"dimensionality\");\n    let dim_sizes = await struct.unpack_from_async(\"<\" + ndims.toFixed() + \"Q\", buf, offset);\n    return dim_sizes;\n  }\n  async _attr_value(dtype, buf, count, offset) {\n    var value = new Array(count);\n    if (dtype instanceof Array) {\n      let dtype_class = dtype[0];\n      for (var i = 0; i < count; i++) {\n        if (dtype_class == \"VLEN_STRING\") {\n          let character_set = dtype[2];\n          var [vlen, vlen_data] = await this._vlen_size_and_data(buf, offset);\n          const encoding = character_set == 0 ? \"ascii\" : \"utf-8\";\n          const decoder = new TextDecoder(encoding);\n          value[i] = decoder.decode(vlen_data);\n          offset += 16;\n        } else if (dtype_class == \"REFERENCE\") {\n          var address = await struct.unpack_from_async(\"<Q\", buf, offset);\n          value[i] = address;\n          offset += 8;\n        } else if (dtype_class == \"VLEN_SEQUENCE\") {\n          let base_dtype = dtype[1];\n          var [vlen, vlen_data] = this._vlen_size_and_data(buf, offset);\n          value[i] = this._attr_value(base_dtype, vlen_data, vlen, 0);\n          offset += 16;\n        } else {\n          throw \"NotImplementedError\";\n        }\n      }\n    } else {\n      let [getter, big_endian, size] = dtype_getter(dtype);\n      const arrayBuffer = await buf.slice(offset, offset + count * size);\n      let view = new DataView64(arrayBuffer, 0);\n      let bufferOffset = 0;\n      for (var i = 0; i < count; i++) {\n        value[i] = view[getter](bufferOffset, !big_endian, size);\n        bufferOffset += size;\n      }\n    }\n    return value;\n  }\n  async _vlen_size_and_data(buf, offset) {\n    let vlen_size = (await struct.unpack_from_async(\"<I\", buf, offset))[0];\n    let gheap_id = await _unpack_struct_from_async(GLOBAL_HEAP_ID, buf, offset + 4);\n    let gheap_address = gheap_id.get(\"collection_address\");\n    assert(gheap_id.get(\"collection_address\") < Number.MAX_SAFE_INTEGER);\n    var gheap;\n    if (!(gheap_address in this._global_heaps)) {\n      gheap = new GlobalHeap(this.fh, gheap_address);\n      await gheap.ready;\n      this._global_heaps[gheap_address] = gheap;\n    }\n    gheap = this._global_heaps[gheap_address];\n    let vlen_data = gheap.objects.get(gheap_id.get(\"object_index\"));\n    return [vlen_size, vlen_data];\n  }\n  async _parse_v1_objects(fh, offset) {\n    let header = await _unpack_struct_from_async(OBJECT_HEADER_V1, fh, offset);\n    assert(header.get(\"version\") == 1);\n    let total_header_messages = header.get(\"total_header_messages\");\n    var block_size = header.get(\"object_header_size\");\n    var block_offset = offset + _structure_size(OBJECT_HEADER_V1);\n    var msg_data = await fh.slice(block_offset, block_offset + block_size);\n    var object_header_blocks = [[block_offset, block_size]];\n    var current_block = 0;\n    var local_offset = 0;\n    var msgs = new Array(total_header_messages);\n    for (var i = 0; i < total_header_messages; i++) {\n      if (local_offset >= block_size) {\n        [block_offset, block_size] = object_header_blocks[++current_block];\n        local_offset = 0;\n      }\n      let msg = await _unpack_struct_from_async(HEADER_MSG_INFO_V1, fh, block_offset + local_offset);\n      let offset_to_message = block_offset + local_offset + HEADER_MSG_INFO_V1_SIZE;\n      msg.set(\"offset_to_message\", offset_to_message);\n      if (msg.get(\"type\") == OBJECT_CONTINUATION_MSG_TYPE) {\n        var [fh_off, size] = await struct.unpack_from_async(\"<QQ\", fh, offset_to_message);\n        object_header_blocks.push([fh_off, size]);\n      }\n      local_offset += HEADER_MSG_INFO_V1_SIZE + msg.get(\"size\");\n      msgs[i] = msg;\n    }\n    return [msgs, msg_data, header];\n  }\n  async _parse_v2_objects(buf, offset) {\n    var [header, creation_order_size, block_offset] = await this._parse_v2_header(buf, offset);\n    offset = block_offset;\n    var msgs = [];\n    var block_size = header.get(\"size_of_chunk_0\");\n    var msg_data = buf.slice(offset, offset += block_size);\n    var object_header_blocks = [[block_offset, block_size]];\n    var current_block = 0;\n    var local_offset = 0;\n    while (true) {\n      if (local_offset >= block_size - HEADER_MSG_INFO_V2_SIZE) {\n        let next_block = object_header_blocks[++current_block];\n        if (next_block == null) {\n          break;\n        }\n        [block_offset, block_size] = next_block;\n        local_offset = 0;\n      }\n      let msg = await _unpack_struct_from_async(HEADER_MSG_INFO_V2, buf, block_offset + local_offset);\n      let offset_to_message = block_offset + local_offset + HEADER_MSG_INFO_V2_SIZE + creation_order_size;\n      msg.set(\"offset_to_message\", offset_to_message);\n      if (msg.get(\"type\") == OBJECT_CONTINUATION_MSG_TYPE) {\n        var [fh_off, size] = await struct.unpack_from_async(\"<QQ\", buf, offset_to_message);\n        object_header_blocks.push([fh_off + 4, size - 4]);\n      }\n      local_offset += HEADER_MSG_INFO_V2_SIZE + msg.get(\"size\") + creation_order_size;\n      msgs.push(msg);\n    }\n    return [msgs, msg_data, header];\n  }\n  async _parse_v2_header(buf, offset) {\n    let header = await _unpack_struct_from_async(OBJECT_HEADER_V2, buf, offset);\n    var creation_order_size;\n    offset += _structure_size(OBJECT_HEADER_V2);\n    assert(header.get(\"version\") == 2);\n    if (header.get(\"flags\") & 4) {\n      creation_order_size = 2;\n    } else {\n      creation_order_size = 0;\n    }\n    assert((header.get(\"flags\") & 16) == 0);\n    if (header.get(\"flags\") & 32) {\n      let times = await struct.unpack_from_async(\"<4I\", buf, offset);\n      offset += 16;\n      header.set(\"access_time\", times[0]);\n      header.set(\"modification_time\", times[1]);\n      header.set(\"change_time\", times[2]);\n      header.set(\"birth_time\", times[3]);\n    }\n    let chunk_fmt = [\"<B\", \"<H\", \"<I\", \"<Q\"][header.get(\"flags\") & 3];\n    header.set(\"size_of_chunk_0\", (await struct.unpack_from_async(chunk_fmt, buf, offset))[0]);\n    offset += struct.calcsize(chunk_fmt);\n    return [header, creation_order_size, offset];\n  }\n  async find_link(name) {\n    if (this._links) {\n      for (link of this._links) {\n        if (name === link[0]) {\n          return link;\n        }\n      }\n    } else {\n      const links = [];\n      for await (const link2 of this.iter_links()) {\n        if (name === link2[0]) {\n          return link2;\n        }\n        links.push(link2);\n      }\n      this._links = links;\n    }\n    return void 0;\n  }\n  async get_links() {\n    const links = [];\n    for await (const link2 of this.iter_links()) {\n      links.push(link2);\n    }\n    return Object.fromEntries(links);\n  }\n  async *iter_links() {\n    for (let msg of this.msgs) {\n      if (msg.get(\"type\") == SYMBOL_TABLE_MSG_TYPE) {\n        yield* this._iter_links_from_symbol_tables(msg);\n      } else if (msg.get(\"type\") == LINK_MSG_TYPE) {\n        yield this._get_link_from_link_msg(msg);\n      } else if (msg.get(\"type\") == LINK_INFO_MSG_TYPE) {\n        yield* this._iter_link_from_link_info_msg(msg);\n      }\n    }\n  }\n  async *_iter_links_from_symbol_tables(sym_tbl_msg) {\n    assert(sym_tbl_msg.get(\"size\") == 16);\n    let data = await _unpack_struct_from_async(SYMBOL_TABLE_MSG, this.fh, sym_tbl_msg.get(\"offset_to_message\"));\n    yield* this._iter_links_btree_v1(data.get(\"btree_address\"), data.get(\"heap_address\"));\n  }\n  async *_iter_links_btree_v1(btree_address, heap_address) {\n    let btree = new BTreeV1Groups(this.fh, btree_address);\n    await btree.ready;\n    let heap = new Heap(this.fh, heap_address);\n    await heap.ready;\n    for (let symbol_table_address of btree.symbol_table_addresses()) {\n      let table = new SymbolTable(this.fh, symbol_table_address);\n      await table.ready;\n      table.assign_name(heap);\n      yield* Object.entries(table.get_links(heap));\n    }\n  }\n  async _get_link_from_link_msg(link_msg) {\n    let offset = link_msg.get(\"offset_to_message\");\n    return await this._decode_link_msg(this.fh, offset)[1];\n  }\n  async _decode_link_msg(data, offset) {\n    let [version, flags] = await struct.unpack_from_async(\"<BB\", data, offset);\n    offset += 2;\n    assert(version == 1);\n    let size_of_length_of_link_name = 2 ** (flags & 3);\n    let link_type_field_present = (flags & 2 ** 3) > 0;\n    let link_name_character_set_field_present = (flags & 2 ** 4) > 0;\n    let ordered = (flags & 2 ** 2) > 0;\n    let link_type;\n    if (link_type_field_present) {\n      link_type = (await struct.unpack_from_async(\"<B\", data, offset))[0];\n      offset += 1;\n    } else {\n      link_type = 0;\n    }\n    assert([0, 1].includes(link_type));\n    let creationorder;\n    if (ordered) {\n      creationorder = (await struct.unpack_from_async(\"<Q\", data, offset))[0];\n      offset += 8;\n    }\n    let link_name_character_set = 0;\n    if (link_name_character_set_field_present) {\n      link_name_character_set = (await struct.unpack_from_async(\"<B\", data, offset))[0];\n      offset += 1;\n    }\n    let encoding = link_name_character_set == 0 ? \"ascii\" : \"utf-8\";\n    let name_size_fmt = [\"<B\", \"<H\", \"<I\", \"<Q\"][flags & 3];\n    let name_size = (await struct.unpack_from_async(name_size_fmt, data, offset))[0];\n    offset += size_of_length_of_link_name;\n    let name = new TextDecoder(encoding).decode(await data.slice(offset, offset + name_size));\n    offset += name_size;\n    let address;\n    if (link_type == 0) {\n      address = (await struct.unpack_from_async(\"<Q\", data, offset))[0];\n    } else if (link_type == 1) {\n      let length_of_soft_link_value = (await struct.unpack_from_async(\"<H\", data, offset))[0];\n      offset += 2;\n      address = new TextDecoder(encoding).decode(await data.slice(offset, offset + length_of_soft_link_value));\n    }\n    return [creationorder, [name, address]];\n  }\n  async *_iter_link_from_link_info_msg(info_msg) {\n    let offset = info_msg.get(\"offset_to_message\");\n    let data = await this._decode_link_info_msg(this.fh, offset);\n    let heap_address = data.get(\"heap_address\");\n    let name_btree_address = data.get(\"name_btree_address\");\n    let order_btree_address = data.get(\"order_btree_address\");\n    if (name_btree_address != null) {\n      yield* this._iter_links_btree_v2(name_btree_address, order_btree_address, heap_address);\n    }\n  }\n  async *_iter_links_btree_v2(name_btree_address, order_btree_address, heap_address) {\n    let heap = new FractalHeap(this.fh, heap_address);\n    await heap.ready;\n    let btree;\n    const ordered = order_btree_address != null;\n    if (ordered) {\n      btree = new BTreeV2GroupOrders(this.fh, order_btree_address);\n      await btree.ready;\n    } else {\n      btree = new BTreeV2GroupNames(this.fh, name_btree_address);\n      await btree.ready;\n    }\n    let items = /* @__PURE__ */ new Map();\n    for (let record of btree.iter_records()) {\n      let data = heap.get_data(record.get(\"heapid\"));\n      let [creationorder, item] = await this._decode_link_msg(data, 0);\n      const key = ordered ? creationorder : item[0];\n      items.set(key, item);\n    }\n    let sorted_keys = Array.from(items.keys()).sort();\n    for (let key of sorted_keys) {\n      yield items.get(key);\n    }\n  }\n  async _decode_link_info_msg(data, offset) {\n    let [version, flags] = await struct.unpack_from_async(\"<BB\", data, offset);\n    assert(version == 0);\n    offset += 2;\n    if ((flags & 1) > 0) {\n      offset += 8;\n    }\n    let fmt = (flags & 2) > 0 ? LINK_INFO_MSG2 : LINK_INFO_MSG1;\n    let link_info = await _unpack_struct_from_async(fmt, data, offset);\n    let output = /* @__PURE__ */ new Map();\n    for (let [k, v] of link_info.entries()) {\n      output.set(k, v == UNDEFINED_ADDRESS2 ? null : v);\n    }\n    return output;\n  }\n  get is_dataset() {\n    return this.find_msg_type(DATASPACE_MSG_TYPE).length > 0;\n  }\n  async get_data() {\n    let msg = this.find_msg_type(DATA_STORAGE_MSG_TYPE)[0];\n    let msg_offset = msg.get(\"offset_to_message\");\n    var [version, dims, layout_class, property_offset] = await this._get_data_message_properties(msg_offset);\n    if (layout_class == 0) {\n      throw \"Compact storage of DataObject not implemented\";\n    } else if (layout_class == 1) {\n      return this._get_contiguous_data(property_offset);\n    } else if (layout_class == 2) {\n      return this._get_chunked_data(msg_offset);\n    }\n  }\n  async _get_data_message_properties(msg_offset) {\n    let dims, layout_class, property_offset;\n    let [version, arg1, arg2] = await struct.unpack_from_async(\"<BBB\", this.fh, msg_offset);\n    if (version == 1 || version == 2) {\n      dims = arg1;\n      layout_class = arg2;\n      property_offset = msg_offset;\n      property_offset += struct.calcsize(\"<BBB\");\n      property_offset += struct.calcsize(\"<BI\");\n      assert(layout_class == 1 || layout_class == 2);\n    } else if (version == 3 || version == 4) {\n      layout_class = arg1;\n      property_offset = msg_offset;\n      property_offset += struct.calcsize(\"<BB\");\n    }\n    assert(version >= 1 && version <= 4);\n    return [version, dims, layout_class, property_offset];\n  }\n  async _get_contiguous_data(property_offset) {\n    let [data_offset] = await struct.unpack_from_async(\"<Q\", this.fh, property_offset);\n    const shape = await this.shape;\n    const dtype = await this.dtype;\n    if (data_offset == UNDEFINED_ADDRESS2) {\n      let size = shape.reduce(function(a, b) {\n        return a * b;\n      }, 1);\n      return new Array(size);\n    }\n    var fullsize = shape.reduce(function(a, b) {\n      return a * b;\n    }, 1);\n    if (!(dtype instanceof Array)) {\n      if (/[<>=!@\\|]?(i|u|f|S)(\\d*)/.test(dtype)) {\n        let [item_getter, item_is_big_endian, item_size] = dtype_getter(dtype);\n        let output = new Array(fullsize);\n        const local_buffer = await this.fh.slice(data_offset, data_offset + item_size * fullsize);\n        let view = new DataView64(local_buffer);\n        for (var i = 0; i < fullsize; i++) {\n          output[i] = view[item_getter](i * item_size, !item_is_big_endian, item_size);\n        }\n        return output;\n      } else if (dtype.datatype_class === 5) {\n        return this.fh.slice(data_offset, data_offset + dtype.size);\n      } else {\n        throw \"not Implemented - no proper dtype defined\";\n      }\n    } else {\n      let dtype_class = dtype[0];\n      if (dtype_class == \"REFERENCE\") {\n        let size = dtype[1];\n        if (size != 8) {\n          throw \"NotImplementedError('Unsupported Reference type')\";\n        }\n        let ref_addresses = await this.fh.slice(data_offset, data_offset + fullsize);\n        return ref_addresses;\n      } else if (dtype_class == \"VLEN_STRING\") {\n        let character_set = dtype[2];\n        const encoding = character_set == 0 ? \"ascii\" : \"utf-8\";\n        const decoder = new TextDecoder(encoding);\n        var value = [];\n        for (var i = 0; i < fullsize; i++) {\n          const [vlen, vlen_data] = await this._vlen_size_and_data(this.fh, data_offset);\n          value[i] = decoder.decode(vlen_data);\n          data_offset += 16;\n        }\n        return value;\n      } else {\n        throw \"NotImplementedError('datatype not implemented')\";\n      }\n    }\n  }\n  async _get_chunked_data(offset) {\n    await this._get_chunk_params();\n    if (this._chunk_address == UNDEFINED_ADDRESS2) {\n      return [];\n    }\n    var chunk_btree = new BTreeV1RawDataChunks(this.fh, this._chunk_address, this._chunk_dims);\n    await chunk_btree.ready;\n    const dtype = await this.dtype;\n    const shape = await this.shape;\n    const chunks = await this.chunks;\n    const filter_pipeline = await this.get_filter_pipeline();\n    let data = await chunk_btree.construct_data_from_chunks(chunks, shape, dtype, filter_pipeline);\n    if (dtype instanceof Array && /^VLEN/.test(dtype[0])) {\n      let dtype_class = dtype[0];\n      for (var i = 0; i < data.length; i++) {\n        let [item_size, gheap_address, object_index] = data[i];\n        var gheap;\n        if (!(gheap_address in this._global_heaps)) {\n          gheap = new GlobalHeap(this.fh, gheap_address);\n          await gheap.ready;\n          this._global_heaps[gheap_address] = gheap;\n        } else {\n          gheap = this._global_heaps[gheap_address];\n        }\n        let vlen_data = gheap.objects.get(object_index);\n        if (dtype_class == \"VLEN_STRING\") {\n          let character_set = dtype[2];\n          const encoding = character_set == 0 ? \"ascii\" : \"utf-8\";\n          const decoder = new TextDecoder(encoding);\n          data[i] = decoder.decode(vlen_data);\n        }\n      }\n    }\n    return data;\n  }\n  async _get_chunk_params() {\n    if (this._chunk_params_set) {\n      return;\n    }\n    this._chunk_params_set = true;\n    var msg = this.find_msg_type(DATA_STORAGE_MSG_TYPE)[0];\n    var offset = msg.get(\"offset_to_message\");\n    var [version, dims, layout_class, property_offset] = await this._get_data_message_properties(offset);\n    if (layout_class != 2) {\n      return;\n    }\n    var data_offset;\n    if (version == 1 || version == 2) {\n      var address = (await struct.unpack_from_async(\"<Q\", this.fh, property_offset))[0];\n      data_offset = property_offset + struct.calcsize(\"<Q\");\n    } else if (version == 3) {\n      var [dims, address] = await struct.unpack_from_async(\"<BQ\", this.fh, property_offset);\n      data_offset = property_offset + struct.calcsize(\"<BQ\");\n    }\n    assert(version >= 1 && version <= 3);\n    var fmt = \"<\" + (dims - 1).toFixed() + \"I\";\n    var chunk_shape = await struct.unpack_from_async(fmt, this.fh, data_offset);\n    this._chunks = chunk_shape;\n    this._chunk_dims = dims;\n    this._chunk_address = address;\n    return;\n  }\n};\nasync function determine_data_shape(buf, offset) {\n  let version = (await struct.unpack_from_async(\"<B\", buf, offset))[0];\n  var header;\n  if (version == 1) {\n    header = await _unpack_struct_from_async(DATASPACE_MSG_HEADER_V1, buf, offset);\n    assert(header.get(\"version\") == 1);\n    offset += DATASPACE_MSG_HEADER_V1_SIZE;\n  } else if (version == 2) {\n    header = await _unpack_struct_from_async(DATASPACE_MSG_HEADER_V2, buf, offset);\n    assert(header.get(\"version\") == 2);\n    offset += DATASPACE_MSG_HEADER_V2_SIZE;\n  } else {\n    throw \"InvalidHDF5File('unknown dataspace message version')\";\n  }\n  let ndims = header.get(\"dimensionality\");\n  let dim_sizes = await struct.unpack_from_async(\"<\" + (ndims * 2).toFixed() + \"I\", buf, offset);\n  return dim_sizes.filter(function(s, i) {\n    return i % 2 == 0;\n  });\n}\nvar UNDEFINED_ADDRESS2 = struct.unpack_from(\"<Q\", new Uint8Array([255, 255, 255, 255, 255, 255, 255, 255]).buffer);\nvar GLOBAL_HEAP_ID = /* @__PURE__ */ new Map([\n  [\"collection_address\", \"Q\"],\n  [\"object_index\", \"I\"]\n]);\n_structure_size(GLOBAL_HEAP_ID);\nvar ATTR_MSG_HEADER_V1 = /* @__PURE__ */ new Map([\n  [\"version\", \"B\"],\n  [\"reserved\", \"B\"],\n  [\"name_size\", \"H\"],\n  [\"datatype_size\", \"H\"],\n  [\"dataspace_size\", \"H\"]\n]);\nvar ATTR_MSG_HEADER_V1_SIZE = _structure_size(ATTR_MSG_HEADER_V1);\nvar ATTR_MSG_HEADER_V3 = /* @__PURE__ */ new Map([\n  [\"version\", \"B\"],\n  [\"flags\", \"B\"],\n  [\"name_size\", \"H\"],\n  [\"datatype_size\", \"H\"],\n  [\"dataspace_size\", \"H\"],\n  [\"character_set_encoding\", \"B\"]\n]);\nvar ATTR_MSG_HEADER_V3_SIZE = _structure_size(ATTR_MSG_HEADER_V3);\nvar OBJECT_HEADER_V1 = /* @__PURE__ */ new Map([\n  [\"version\", \"B\"],\n  [\"reserved\", \"B\"],\n  [\"total_header_messages\", \"H\"],\n  [\"object_reference_count\", \"I\"],\n  [\"object_header_size\", \"I\"],\n  [\"padding\", \"I\"]\n]);\nvar OBJECT_HEADER_V2 = /* @__PURE__ */ new Map([\n  [\"signature\", \"4s\"],\n  [\"version\", \"B\"],\n  [\"flags\", \"B\"]\n]);\nvar DATASPACE_MSG_HEADER_V1 = /* @__PURE__ */ new Map([\n  [\"version\", \"B\"],\n  [\"dimensionality\", \"B\"],\n  [\"flags\", \"B\"],\n  [\"reserved_0\", \"B\"],\n  [\"reserved_1\", \"I\"]\n]);\nvar DATASPACE_MSG_HEADER_V1_SIZE = _structure_size(DATASPACE_MSG_HEADER_V1);\nvar DATASPACE_MSG_HEADER_V2 = /* @__PURE__ */ new Map([\n  [\"version\", \"B\"],\n  [\"dimensionality\", \"B\"],\n  [\"flags\", \"B\"],\n  [\"type\", \"B\"]\n]);\nvar DATASPACE_MSG_HEADER_V2_SIZE = _structure_size(DATASPACE_MSG_HEADER_V2);\nvar HEADER_MSG_INFO_V1 = /* @__PURE__ */ new Map([\n  [\"type\", \"H\"],\n  [\"size\", \"H\"],\n  [\"flags\", \"B\"],\n  [\"reserved\", \"3s\"]\n]);\nvar HEADER_MSG_INFO_V1_SIZE = _structure_size(HEADER_MSG_INFO_V1);\nvar HEADER_MSG_INFO_V2 = /* @__PURE__ */ new Map([\n  [\"type\", \"B\"],\n  [\"size\", \"H\"],\n  [\"flags\", \"B\"]\n]);\nvar HEADER_MSG_INFO_V2_SIZE = _structure_size(HEADER_MSG_INFO_V2);\nvar SYMBOL_TABLE_MSG = /* @__PURE__ */ new Map([\n  [\"btree_address\", \"Q\"],\n  [\"heap_address\", \"Q\"]\n]);\nvar LINK_INFO_MSG1 = /* @__PURE__ */ new Map([\n  [\"heap_address\", \"Q\"],\n  [\"name_btree_address\", \"Q\"]\n]);\nvar LINK_INFO_MSG2 = /* @__PURE__ */ new Map([\n  [\"heap_address\", \"Q\"],\n  [\"name_btree_address\", \"Q\"],\n  [\"order_btree_address\", \"Q\"]\n]);\nvar FILLVAL_MSG_V1V2 = /* @__PURE__ */ new Map([\n  [\"version\", \"B\"],\n  [\"space_allocation_time\", \"B\"],\n  [\"fillvalue_write_time\", \"B\"],\n  [\"fillvalue_defined\", \"B\"]\n]);\nvar FILLVAL_MSG_V1V2_SIZE = _structure_size(FILLVAL_MSG_V1V2);\nvar FILLVAL_MSG_V3 = /* @__PURE__ */ new Map([\n  [\"version\", \"B\"],\n  [\"flags\", \"B\"]\n]);\nvar FILLVAL_MSG_V3_SIZE = _structure_size(FILLVAL_MSG_V3);\nvar FILTER_PIPELINE_DESCR_V1 = /* @__PURE__ */ new Map([\n  [\"filter_id\", \"H\"],\n  [\"name_length\", \"H\"],\n  [\"flags\", \"H\"],\n  [\"client_data_values\", \"H\"]\n]);\nvar FILTER_PIPELINE_DESCR_V1_SIZE = _structure_size(FILTER_PIPELINE_DESCR_V1);\nvar DATASPACE_MSG_TYPE = 1;\nvar LINK_INFO_MSG_TYPE = 2;\nvar DATATYPE_MSG_TYPE = 3;\nvar FILLVALUE_MSG_TYPE = 5;\nvar LINK_MSG_TYPE = 6;\nvar DATA_STORAGE_MSG_TYPE = 8;\nvar DATA_STORAGE_FILTER_PIPELINE_MSG_TYPE = 11;\nvar ATTRIBUTE_MSG_TYPE = 12;\nvar OBJECT_CONTINUATION_MSG_TYPE = 16;\nvar SYMBOL_TABLE_MSG_TYPE = 17;\n\n// esm/high-level.js\nvar Group = class {\n  constructor(name, parent) {\n    if (parent == null) {\n      this.parent = this;\n      this.file = this;\n    } else {\n      this.parent = parent;\n      this.file = parent.file;\n    }\n    this.name = name;\n  }\n  async init(dataobjects) {\n    const index = this.file.index;\n    if (index && this.name in index) {\n      this._links = index[this.name];\n    } else {\n      this._links = await dataobjects.get_links();\n    }\n    this._dataobjects = dataobjects;\n    this._attrs = null;\n    this._keys = null;\n  }\n  get keys() {\n    if (this._keys == null) {\n      this._keys = Object.keys(this._links);\n    }\n    return this._keys.slice();\n  }\n  get values() {\n    return this.keys.map((k) => this.get(k));\n  }\n  length() {\n    return this.keys.length;\n  }\n  _dereference(ref) {\n    if (!ref) {\n      throw \"cannot deference null reference\";\n    }\n    let obj = this.file._get_object_by_address(ref);\n    if (obj == null) {\n      throw \"reference not found in file\";\n    }\n    return obj;\n  }\n  async get(y) {\n    if (typeof y == \"number\") {\n      return this._dereference(y);\n    }\n    var path = normpath(y);\n    if (path == \"/\") {\n      return this.file;\n    }\n    if (path == \".\") {\n      return this;\n    }\n    if (/^\\//.test(path)) {\n      return this.file.get(path.slice(1));\n    }\n    if (posix_dirname(path) != \"\") {\n      var [next_obj, additional_obj] = path.split(/\\/(.*)/);\n    } else {\n      var next_obj = path;\n      var additional_obj = \".\";\n    }\n    if (!(next_obj in this._links)) {\n      throw next_obj + \" not found in group\";\n    }\n    var obj_name = normpath(this.name + \"/\" + next_obj);\n    let link_target = this._links[next_obj];\n    if (typeof link_target == \"string\") {\n      try {\n        return this.get(link_target);\n      } catch (error) {\n        return null;\n      }\n    }\n    var dataobjs = new DataObjects(this.file._fh, link_target);\n    await dataobjs.ready;\n    if (dataobjs.is_dataset) {\n      if (additional_obj != \".\") {\n        throw obj_name + \" is a dataset, not a group\";\n      }\n      return new Dataset(obj_name, dataobjs, this);\n    } else {\n      var new_group = new Group(obj_name, this);\n      await new_group.init(dataobjs);\n      return new_group.get(additional_obj);\n    }\n  }\n  visit(func) {\n    return this.visititems((name, obj) => func(name));\n  }\n  visititems(func) {\n    var root_name_length = this.name.length;\n    if (!/\\/$/.test(this.name)) {\n      root_name_length += 1;\n    }\n    var queue = this.values.slice();\n    while (queue) {\n      let obj = queue.shift();\n      if (queue.length == 1)\n        console.log(obj);\n      let name = obj.name.slice(root_name_length);\n      let ret = func(name, obj);\n      if (ret != null) {\n        return ret;\n      }\n      if (obj instanceof Group) {\n        queue = queue.concat(obj.values);\n      }\n    }\n    return null;\n  }\n  get attrs() {\n    if (this._attrs == null) {\n      this._attrs = this._dataobjects.get_attributes();\n    }\n    return this._attrs;\n  }\n};\nvar File = class extends Group {\n  constructor(fh, filename, options) {\n    super(\"/\", null);\n    this.ready = this.init(fh, filename, options);\n  }\n  async init(fh, filename, options) {\n    var superblock = new SuperBlock(fh, 0);\n    await superblock.ready;\n    var offset = await superblock.get_offset_to_dataobjects();\n    var dataobjects = new DataObjects(fh, offset);\n    await dataobjects.ready;\n    this.parent = this;\n    this.file = this;\n    this.name = \"/\";\n    this._dataobjects = dataobjects;\n    this._attrs = null;\n    this._keys = null;\n    this._fh = fh;\n    this.filename = filename || \"\";\n    this.mode = \"r\";\n    this.userblock_size = 0;\n    if (options && options.index) {\n      this.index = options.index;\n    } else {\n      let index_offset;\n      if (options && options.indexOffset) {\n        index_offset = options.indexOffset;\n      } else {\n        const attrs = await this.attrs;\n        if (attrs.hasOwnProperty(\"_index_offset\")) {\n          index_offset = attrs[\"_index_offset\"];\n        } else {\n          const indexName = this.indexName || \"_index\";\n          const index_link = await dataobjects.find_link(indexName);\n          if (index_link) {\n            index_offset = index_link[1];\n          }\n        }\n      }\n      if (index_offset) {\n        try {\n          const dataobject = new DataObjects(fh, index_offset);\n          await dataobject.ready;\n          const comp_index_data = await dataobject.get_data();\n          const inflated = ungzip_1(comp_index_data);\n          const json = new TextDecoder().decode(inflated);\n          this.index = JSON.parse(json);\n        } catch (e) {\n          console.error(`Error loading index by offset ${e}`);\n        }\n      }\n    }\n    if (this.index && this.name in this.index) {\n      this._links = this.index[this.name];\n    } else {\n      this._links = await dataobjects.get_links();\n    }\n  }\n  _get_object_by_address(obj_addr) {\n    if (this._dataobjects.offset == obj_addr) {\n      return this;\n    }\n    return this.visititems((y) => {\n      y._dataobjects.offset == obj_addr ? y : null;\n    });\n  }\n};\nvar Dataset = class extends Array {\n  constructor(name, dataobjects, parent) {\n    super();\n    this.parent = parent;\n    this.file = parent.file;\n    this.name = name;\n    this._dataobjects = dataobjects;\n    this._attrs = null;\n    this._astype = null;\n  }\n  get value() {\n    var data = this._dataobjects.get_data();\n    if (this._astype == null) {\n      return this.getValue(data);\n    }\n    return data.astype(this._astype);\n  }\n  get shape() {\n    return this._dataobjects.shape;\n  }\n  get attrs() {\n    return this._dataobjects.get_attributes();\n  }\n  get dtype() {\n    return this._dataobjects.dtype;\n  }\n  get fillvalue() {\n    return this._dataobjects.get_fillvalue();\n  }\n  async to_array() {\n    const value = await this.value;\n    const shape = await this.shape;\n    return create_nested_array(value, shape);\n  }\n  async getValue(data) {\n    const dtype = await this.dtype;\n    if (dtype.startsWith(\"S\")) {\n      return (await data).map((s) => s.substr(0, s.indexOf(\"\\0\")));\n    } else {\n      return data;\n    }\n  }\n};\nfunction posix_dirname(p) {\n  let sep = \"/\";\n  let i = p.lastIndexOf(sep) + 1;\n  let head = p.slice(0, i);\n  let all_sep = new RegExp(\"^\" + sep + \"+$\");\n  let end_sep = new RegExp(sep + \"$\");\n  if (head && !all_sep.test(head)) {\n    head = head.replace(end_sep, \"\");\n  }\n  return head;\n}\nfunction normpath(path) {\n  return path.replace(/\\/(\\/)+/g, \"/\");\n}\nfunction create_nested_array(value, shape) {\n  const total_length = value.length;\n  const dims_product = shape.reduce((previous, current) => previous * current, 1);\n  if (total_length !== dims_product) {\n    console.warn(`shape product: ${dims_product} does not match length of flattened array: ${total_length}`);\n  }\n  let output = value;\n  const subdims = shape.slice(1).reverse();\n  for (let dim of subdims) {\n    const new_output = [];\n    const { length } = output;\n    let cursor = 0;\n    while (cursor < length) {\n      new_output.push(output.slice(cursor, cursor += dim));\n    }\n    output = new_output;\n  }\n  return output;\n}\n/*! pako 2.0.4 https://github.com/nodeca/pako @license (MIT AND Zlib) */\n\nasync function openH5File(options) {\n\n    // Some clients (notably igv-webapp) pass a File reference in the url field.  Fix this\n    if(options.url && isBlobLike(options.url)) {\n        options.file = options.url;\n        options.url = undefined;\n    }\n\n    const isRemote = options.url !== undefined;\n    let fileReader = options.reader ? options.reader : getReaderFor(options);\n\n    // Set default options appropriate for spacewalk\n    const fetchSize = options.fetchSize || 2000;\n    const maxSize = options.maxSize || 200000;\n\n    if (isRemote) {\n        fileReader = new BufferedFile({file: fileReader, fetchSize, maxSize});\n    }\n    const asyncBuffer = new AsyncBuffer(fileReader);\n\n    // Optional external index -- this is not common\n    const index = await readExternalIndex(options);\n    const indexOffset = options.indexOffset;\n\n    // Create HDF5 file\n    const filename = getFilenameFor(options);\n    const hdfFile = new File(asyncBuffer, filename, {index, indexOffset});\n    await hdfFile.ready;\n    return hdfFile\n}\n\nasync function readExternalIndex(options) {\n\n    let indexReader;\n    if(options.indexReader) {\n        indexReader = options.indexReader;\n    }\n    else if(options.index) {\n        return options.index\n    } else if (options.indexURL) {\n        indexReader = new RemoteFile({url: options.indexURL});\n    } else if (options.indexPath) {\n        indexReader = new NodeLocalFile({path: options.indexPath});\n    } else if (options.indexFile) {\n        indexReader = new BlobFile({file: options.indexFile});\n    }\n    if (indexReader) {\n        const indexFileContents = await indexReader.read();\n        const indexFileJson = new TextDecoder().decode(indexFileContents);\n        return JSON.parse(indexFileJson)\n    } else {\n        return undefined\n    }\n}\n\n\nfunction getReaderFor(options) {\n    if (options.url) { // An absolute or relative URL\n        return new RemoteFile(options)\n    } else if (options.path) { // A file path\n        return new NodeLocalFile(options)\n    } else if (options.file) { // A Browser file blob\n        return new BlobFile(options.file)\n    } else {\n        throw Error(\"One of 'url', 'path (node only)', or 'file (browser only)' must be specified\")\n    }\n}\n\nfunction getFilenameFor(options) {\n    if (options.url) {\n        return getFilename(options.url)\n    } else if (options.path) {\n        return getFilename(options.path)\n    } else if (options.file) {\n        return options.file.name\n    }\n}\n\n/**\n * Wraps an io.Reader in an interface jsfive-async expects*\n */\nclass AsyncBuffer {\n    constructor(fileReader) {\n        this.fileReader = fileReader;\n    }\n\n    async slice(start, end) {\n        return this.fileReader.read(start, end - start)\n    }\n}\n\nfunction getFilename(pathOrURL) {\n    const idx = pathOrURL.lastIndexOf(\"/\");\n    return idx > 0 ? pathOrURL.substring(idx + 1) : pathOrURL\n}\n\nfunction isBlobLike(obj) {\n    return typeof obj.slice === 'function' && typeof obj.arrayBuffer === 'function'\n}\n\nfunction unflattenIndex(index) {\n\n    const makeObject = (name) => {\n        return {name: name, children: []}\n    };\n\n    const objectMap = {};\n\n    for (let key of Object.keys(index)) {\n\n        let obj;\n        if (objectMap.hasOwnProperty(key)) {\n            obj = objectMap[key];\n        } else {\n            obj = makeObject(key);\n            objectMap[key] = obj;\n        }\n\n        const tmp = index[key];\n        for (let childName of Object.keys(tmp)) {\n            let child;\n            const childKey = key + (key.endsWith('/') ? '' : '/') + childName;\n            if (objectMap.hasOwnProperty(childKey)) {\n                child = objectMap[childKey];\n            } else {\n                child = makeObject(childKey);\n                objectMap[childKey] = child;\n            }\n            obj.children.push(child);\n        }\n\n    }\n\n    const rootObject = objectMap['/'];\n\n    return rootObject\n\n}\n\nexport { openH5File, unflattenIndex };\n","import {openH5File} from \"../../node_modules/hdf5-indexed-reader/dist/hdf5-indexed-reader.esm.js\"\n\nclass HDF5Reader {\n    \n    constructor(h5_file, bin_size=100000){\n\n        this.h5_file = h5_file;\n        this.bin_size = bin_size;\n        this.h5_obj = undefined\n    }\n    \n    async fetch(){\n\n        if(!this.h5_obj) {\n            this.h5_obj = await openH5File({\n                url: this.h5_file,\n                fetchSize: 1000000,\n                maxSize: 200000000\n            })\n        }\n        return this.h5_obj\n    }\n\n    async get_keys(){\n        /* returns a list of keys of the pytor file*/\n        let h5_obj = await this.fetch();\n\n        return h5_obj.keys\n    }\n\n    async get_rd_signal(bin_size=this.bin_size){\n\n        let h5_obj = await this.fetch();\n        let h5_obj_keys = h5_obj.keys;\n\n        // console.log(h5_obj_keys)\n        let signal_bin = new ParseSignals(h5_obj_keys);\n        let rd_bins = signal_bin.get_rd_bins()\n        let snp_bins = signal_bin.get_snp_bins()\n        this.available_bins = [...new Set(rd_bins, snp_bins)]\n\n        // let bin_size = this.bin_size\n        if(! this.available_bins.includes(bin_size)){\n            bin_size = this.available_bins.at(-1);    \n        }\n\n        const chr_ds = await h5_obj.get(\"rd_chromosomes\")\n        const type = await chr_ds.dtype\n        const t0 = Date.now()\n        let rd_chromosomes = await chr_ds.value\n        //console.log(`get_rd_signal rd_chromosomes  ${Date.now() - t0}`)\n        //rd_chromosomes = fixString(rd_chromosomes)\n        let rd_flag = \"\"\n\n        // get rd stat\n        let rd_stat = await this.rd_stat(h5_obj, h5_obj_keys, bin_size)\n        \n        var wigFeatures = []\n        var wigFeatures_gc = []\n        var wigFeatures_rd_call_meanshift = []\n        var wigFeatures_rd_call_combined = []\n        var wigFeatures_baf1 = []\n        var wigFeatures_baf2 = []\n\n        for (let chrom of rd_chromosomes) {\n            // for normal rd signal\n            var signal_rd = `his_rd_p_${chrom}_${bin_size}${rd_flag}`\n            let chr_wig = await this.get_chr_signal(h5_obj, h5_obj_keys, chrom, bin_size, signal_rd, rd_stat)\n            wigFeatures = wigFeatures.concat(chr_wig)\n            \n            // rd gc corrected\n            var signal_rd_gc = `his_rd_p_${chrom}_${bin_size}_GC`\n            let chr_wig_gc = await this.get_chr_signal(h5_obj, h5_obj_keys, chrom, bin_size, signal_rd_gc, rd_stat)\n            wigFeatures_gc = wigFeatures_gc.concat(chr_wig_gc)\n\n            // rd call MeanShift\n            \n            let signal_rd_call = `his_rd_p_${chrom}_${bin_size}_partition_GC_merge`\n            let chr_wig_rd_call_meanshift = await this.get_chr_signal(h5_obj, h5_obj_keys, chrom, bin_size, signal_rd_call, rd_stat)\n            wigFeatures_rd_call_meanshift = wigFeatures_rd_call_meanshift.concat(chr_wig_rd_call_meanshift)\n            \n            let chr_wig_rd_call = await this.rd_call_combined(h5_obj, h5_obj_keys, chrom, bin_size, rd_stat)\n            wigFeatures_rd_call_combined = wigFeatures_rd_call_combined.concat(chr_wig_rd_call)\n\n            // baf likelihood\n            let signal_baf_1 = `snp_likelihood_${chrom}_${bin_size}_mask`\n            let chr_wig_bafs = await this.get_baf_signals(h5_obj, h5_obj_keys, chrom, bin_size, signal_baf_1)\n\n            // let signal_baf_1 = `snp_i1_${chrom}_${bin_size}_mask`\n            // let chr_wig_bafs = await this.get_baf_signals_v2(h5_obj, h5_obj_keys, chrom, bin_size, signal_baf_1)\n\n            wigFeatures_baf1 = wigFeatures_baf1.concat(chr_wig_bafs[0])\n            wigFeatures_baf2 = wigFeatures_baf2.concat(chr_wig_bafs[1])\n            // this.rd_call_combined(h5_obj, h5_obj_keys, chrom, bin_size, rd_stat)\n        }\n        this.callers = []\n        if (wigFeatures_rd_call_combined.length != 0){\n            this.callers.push('ReadDepth')\n        }\n        if (wigFeatures_rd_call_combined.length != 0){\n            this.callers.push('2D')\n        }\n\n        var obj = {}\n        var signal_obj = {\n            \"RD_Raw\": wigFeatures,\n            \"RD_Raw_gc_coor\" : wigFeatures_gc,\n            \"ReadDepth\": wigFeatures_rd_call_meanshift,\n            \"2D\": wigFeatures_rd_call_combined,\n            \"BAF1\": wigFeatures_baf1,\n            \"BAF2\": wigFeatures_baf2\n        }\n        obj[bin_size] = signal_obj\n        return obj\n    }\n\n    decode_segments(segments_arr){\n        let max = 2 ** 32 - 1\n        let segments = []\n        let l = []\n        for (let x of segments_arr){\n            if(x == max){\n                segments.push(l)\n                l = []\n            } else{\n                l.push(x)\n            }\n        }\n        return segments\n    }\n\n   async  rd_call_combined(h5_obj, h5_obj_keys, chrom, bin_size, rd_stat){\n        let chr_wig = [];\n        \n        let segments\n        let mosaic_call_segments = `his_rd_p_${chrom}_${bin_size}_partition_GC_mosaic_segments_2d`\n        if (h5_obj_keys.includes(mosaic_call_segments)){\n            const chrom_dataset = await h5_obj.get(mosaic_call_segments)\n            const t0 = Date.now()\n            let chrom_data = await chrom_dataset.value\n            //console.log(`rd_call_combined ${mosaic_call_segments}  ${Date.now() - t0}`)\n            segments = this.decode_segments(chrom_data)\n            \n        }\n\n        let mosaic_calls = `his_rd_p_${chrom}_${bin_size}_partition_GC_mosaic_call_2d`\n        if (h5_obj_keys.includes(mosaic_calls)){\n            const segments_call_dataset = await h5_obj.get(mosaic_calls)\n            let segments_call = await segments_call_dataset.to_array() //create_nested_array(value, shape)\n            segments.forEach((ind_segment, segment_idx) => {\n                ind_segment.forEach((bin_value, bin_idx) =>{\n                    chr_wig.push({chr:chrom, start: bin_value*bin_size, end: (bin_value+1) * bin_size, value: (segments_call[0][segment_idx]/rd_stat[4]) *2})\n                })\n            })\n        }\n\n        return chr_wig\n        \n    }\n\n   async rd_stat(h5_obj, h5_obj_keys, bin_size){\n        /* \n        returns a list for rd statistics information \n        paramter\n        ---------\n        h5_obj: cnvpytor read object\n        h5_obj_keys: a list of available signal names\n        bin_size: bin size\n        \n        */\n        \n        let rd_stat_signal =  `rd_stat_${bin_size}_auto`\n        let rd_stat;\n        if (h5_obj_keys.includes(rd_stat_signal)){\n            const rd_stat_dataset = await h5_obj.get(rd_stat_signal)\n            const t0 = Date.now()\n            rd_stat = await rd_stat_dataset.value\n            //console.log(`rd_stat_signal ${rd_stat_signal}  ${Date.now() - t0}`)\n        }\n        return rd_stat\n    }\n\n    \n    async get_chr_signal(h5_obj, h5_obj_keys, chrom, bin_size, signal_name, rd_stat){\n        /* return a list of dictionary for a chromosome */\n        let chr_wig = [];\n        \n        if (h5_obj_keys.includes(signal_name)){\n            const chrom_dataset = await h5_obj.get(signal_name)\n            const t0 = Date.now()\n            let chrom_data = await chrom_dataset.value\n            //console.log(`chr_signal ${signal_name}  ${Date.now() - t0}`)\n            chrom_data.forEach((bin_value, bin_idx) => {\n                chr_wig.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: (bin_value/rd_stat[4]) *2})\n            });\n        }\n        return chr_wig\n    }\n\n    async get_baf_signals(h5_obj, h5_obj_keys, chrom, bin_size, signal_name){\n        /* return two list of dictionary*/\n        let chr_wig_1 = [];\n        let chr_wig_2 = [];\n        if (h5_obj_keys.includes(signal_name)){\n            let chrom_dataset = await h5_obj.get(signal_name)\n            let chrom_data = await chrom_dataset.to_array() //create_nested_array(value, shape)\n            chrom_data.forEach((bin_value, bin_idx) => {\n                let max_value =  Math.max(...bin_value);\n                const res = bin_value.indexOf(max_value);\n                let lh = Math.max(res / 200, 1 - res / 200);\n                chr_wig_1.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: -2 * lh})\n                if(lh != 0.5){\n                    chr_wig_2.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: -2 *(1-lh)})\n                }\n            });\n        }\n        return [chr_wig_1, chr_wig_2]\n    }\n\n    async get_baf_signals_v2(h5_obj, h5_obj_keys, chrom, bin_size, signal_name){\n        \n        /* return two list of dictionary*/\n        let chr_wig_1 = [];\n        let chr_wig_2 = [];\n        if (h5_obj_keys.includes(signal_name)){\n            let chrom_dataset = await h5_obj.get(signal_name)\n            let chrom_data = await chrom_dataset.to_array() //create_nested_array(value, shape)\n            chrom_data.forEach((lh, bin_idx) => {\n                if (!isNaN(lh)){\n                    chr_wig_1.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: -2 * ( 0.5 - lh )})\n                    if(lh != 0.5){\n                        chr_wig_2.push({chr:chrom, start: bin_idx*bin_size, end: (bin_idx+1) * bin_size, value: -2 * ( 0.5 + lh )})\n                    }\n                }\n            });\n        }\n        console.log(chrom, chr_wig_1, chr_wig_2)\n        return [chr_wig_1, chr_wig_2]\n\n    }\n}\n\nclass ParseSignals{\n\n    constructor(signals){\n        /*\n        Parse a signal names\n\n        parameter\n        ---------\n        signals: List of keys in pytor files\n        */\n        this.signals = signals\n    }\n\n    get_rd_bins(){\n        /* return list of rd bins */\n        let rd_keys = [];\n        this.signals.forEach( val => {\n            let match = val.match(/^his_rd_p_(.*)_(\\d+)$/);\n            if(match){\n                rd_keys.push({chr:match[1], bin_size:match[2]})\n            }});\n        const rd_bins = [...new Set(rd_keys.map(item => Number(item.bin_size)))];\n        return rd_bins\n    }\n\n    get_snp_bins(){\n        /* return list of snp bins */\n        let slected_signals = [];\n        this.signals.forEach( val => {\n            let match = val.match(/^snp_likelihood_(.*)_(\\d+)_mask$/);\n            if(match){\n                slected_signals.push({chr:match[1], bin_size:match[2]})\n            }});\n        const bins = [...new Set(slected_signals.map(item => Number(item.bin_size)))];\n        return bins\n    }\n}\n\nfunction fixString(strings) {\n\n    return strings.map(s => s.substr(0,s.indexOf('\\0')))\n\n}\n\n// function to_array(value, shape) {\n//     const { json_value, metadata } = this;\n//     const { shape } = metadata;\n//     if (!isIterable(json_value) || typeof json_value === \"string\") {\n//         return json_value;\n//     }\n//     let nested = create_nested_array(json_value, shape);\n//     return nested;\n// }\n\nfunction create_nested_array(value, shape) {\n    // check that shapes match:\n    const total_length = value.length;\n    const dims_product = shape.reduce((previous, current) => (previous * current), 1);\n    if (total_length !== dims_product) {\n        console.warn(`shape product: ${dims_product} does not match length of flattened array: ${total_length}`);\n    }\n    // Get reshaped output:\n    let output = value;\n    const subdims = shape.slice(1).reverse();\n    for (let dim of subdims) {\n        // in each pass, replace input with array of slices of input\n        const new_output = [];\n        const { length } = output;\n        let cursor = 0;\n        while (cursor < length) {\n            new_output.push(output.slice(cursor, cursor += dim));\n        }\n        output = new_output;\n    }\n    return output;\n}\n\n\n\n\n\nexport default HDF5Reader\n","\nclass GetFit {\n  constructor(allBins) {\n      this.allBins = allBins\n  }\n  getValues() {\n      const bins = Object.values(this.allBins).reduce(\n          (binResult, bin) => { return binResult.concat(bin.filter(a => a.binScore > 0).map(a => a.binScore)) }, [])\n      return bins\n  }\n  getMean(data) {\n      return (data.reduce(function (a, b) { return a + b; }) / data.length);\n  }\n  fit_data() {\n      let rd_list = this.getValues()\n      let distParmas = getDistParams(rd_list)\n      return distParmas\n  }\n\n  histogram(data, bins) {\n      const step = bins[1] - bins[0];\n      const hist_bins = [];\n\n      data.forEach((value, index) => {\n          bins.forEach((bin_value, bin_index) => {\n              if (!hist_bins[bin_value]) {\n                  hist_bins[bin_value] = { count: 0 };\n              }\n              if (bin_value <= value && value < bin_value + step) {\n                  hist_bins[bin_value].count++;\n                  return false;\n              }\n          });\n      });\n      const dist_p = []\n      hist_bins.forEach((bin, index) => { dist_p.push(bin.count); });\n      return dist_p\n  }\n\n}\n\nfunction range_function(start, stop, step) {\n  const data_array = Array(Math.ceil((stop - start) / step))\n    .fill(start)\n    .map((x, y) => x + y * step);\n  return data_array;\n}\n\nfunction Gaussian([a, x0, sigma]) {\n  return x =>\n    (a * Math.exp(-Math.pow(x - x0, 2) / (2 * Math.pow(sigma, 2)))) / (Math.sqrt(2 * Math.PI) * sigma);\n}\n\nfunction filterOutliers(someArray) {\n\n  if (someArray.length < 4)\n    return someArray;\n\n  let values, q1, q3, iqr, maxValue, minValue;\n\n  values = someArray.slice().sort((a, b) => a - b); //copy array fast and sort\n\n  if ((values.length / 4) % 1 === 0) { //find quartiles\n    q1 = 1 / 2 * (values[(values.length / 4)] + values[(values.length / 4) + 1]);\n    q3 = 1 / 2 * (values[(values.length * (3 / 4))] + values[(values.length * (3 / 4)) + 1]);\n  } else {\n    q1 = values[Math.floor(values.length / 4 + 1)];\n    q3 = values[Math.ceil(values.length * (3 / 4) + 1)];\n  }\n\n  iqr = q3 - q1;\n  maxValue = q3 + iqr * 1.5;\n  minValue = q1 - iqr * 1.5;\n\n  return values.filter((x) => (x >= minValue) && (x <= maxValue));\n}\n\nfunction getDistParams(bins) {\n  let filteredBins = filterOutliers(bins)\n  const n = filteredBins.length\n  const mean = filteredBins.reduce((a, b) => a + b) / n\n  const std = Math.sqrt(filteredBins.map(x => Math.pow(x - mean, 2)).reduce((a, b) => a + b) / n)\n  return [mean, std]\n}\n\nfunction linspace(a, b, n) {\n  if (typeof n === \"undefined\") n = Math.max(Math.round(b - a) + 1, 1);\n  if (n < 2) {\n      return n === 1 ? [a] : [];\n  }\n  var ret = Array(n);\n  n--;\n  for (let i = n; i >= 0; i--) {\n      ret[i] = (i * b + (n - i) * a) / n;\n  }\n  return ret;\n}\n\nexport default { range_function, getDistParams, linspace, GetFit};\n","\n\n/** \n* Evaluates the cumulative distribution function (CDF) for a Student's t distribution with degrees of freedom `v` at a value `t`.\n*\n* @params {number} t - value for the t test\n* @params {PositiveNumber} v - degree of freedom\n* @returns {Probability} evaluated CDF\n*/\nfunction TdistributionCDF(t, v){\n    if (isNaN( t ) || isNaN( v ) || v <= 0.0) {\n\t\treturn NaN;\n\t}\n\tif ( t === 0.0 ) {\n\t\treturn 0.5;\n\t}\n    return 1/2 + (1/2 * (incompbeta(1/2*v, 1/2, 1) - incompbeta(1/2*v, 1/2, v/(v+t*t)))) * Math.sign( t)\n\n}\n\n\n/** \n* incompbeta(a,b,x) evaluates incomplete beta function, here a, b > 0 and 0 <= x <= 1. This function requires contfractbeta(a,b,x, ITMAX = 200) \n*  code translated from  https://malishoaib.wordpress.com/2014/04/15/the-beautiful-beta-functions-in-raw-python/\n*\n* @params\n* @params\n* @params\n* @returns \n*/\nfunction incompbeta(a, b, x){\n     \n    if(x == 0){\n        return 0;\n    }\n    else if (x == 1){\n        return 1;\n    }else\n    {\n        let lbeta = lgamma(a+b) - lgamma(a) - lgamma(b) + a * Math.log(x) + b * Math.log(1-x)\n        if (x < (a+1) / (a+b+2)){\n            return Math.exp(lbeta) * contfractbeta(a, b, x) / a;\n        }\n        else{\n            return 1 - Math.exp(lbeta) * contfractbeta(b, a, 1-x) / b;\n        }\n    }\n}\n\n/**\n * contfractbeta() evaluates the continued fraction form of the incomplete Beta function; incompbeta().  \n *   (Code translated from: Numerical Recipes in C.)\n * \n * @param {*} a \n * @param {*} b \n * @param {*} x \n * @param {*} ITMAX \n * @returns \n */\nfunction contfractbeta(a,b,x, ITMAX = 1000){\n     \n    let EPS = 3.0e-7;\n    let az = 1.0;\n    let am = 1.0;\n    let bm = 1.0;\n    let qab = a + b\n    let qap = a + 1.0\n    let qam = a-1.0\n    let bz = 1.0 - qab*x/qap\n     \n    //for i in range(ITMAX):\n    for(let i =0; i<= ITMAX; i++){\n        let em = parseFloat(i+1)\n        let tem = em + em\n        let d = em*(b-em)*x/((qam+tem)*(a+tem))\n        let ap = az + d*am\n        let bp = bz+d*bm\n        d = -(a+em)*(qab+em)*x/((qap+tem)*(a+tem))\n        let app = ap+d*az\n        let bpp = bp+d*bz\n        let aold = az\n        am = ap/bpp\n        bm = bp/bpp\n        az = app/bpp\n        bz = 1.0\n        if (Math.abs(az-aold)<(EPS * Math.abs(az))){\n            return az\n        }\n    }\n}\n\n/**\n * Evaluates factorial of a number\n * \n * @param {Number} xf - Integer number \n * @returns factorial of the number\n */\nfunction factorial(xf) {\n    if ((xf == 0) || (xf == 1)) return 1;\n    else {\n        let result = (xf * factorial(xf - 1))\n        return result\n    }\n}\n\n/**\n * Evalues factorial for an integer or fraction using either either factorial or gamma function\n * \n * @param {Number} a - integar or fraction number\n * @returns value of a gamma function\n */\nexport function gamma(a){\n    let gamma\n    \n    var qc = [75122.6331530, 80916.6278952, 36308.2951477, 8687.24529705, 1168.92649479, 83.8676043424, 2.50662827511];\n    \n    var sum1 = 0;\n    var prod1 = 1;\n    if (a == 0) { \n        gamma = 1e99; \n    }else {\n        if ((a % 1) == 0) {//if integer\n            gamma = factorial(a - 1);\n        }\n        else { //not integer\n            for (let j = 0; j < qc.length; j++) {\n                sum1 = sum1 + qc[j] * Math.pow(a, j);\n                prod1 = prod1 * (a + j);\n            }\n            gamma = (sum1 * Math.pow((a + 5.5), (a + 0.5))) * Math.exp(-(a + 5.5)) / prod1;\n        }\n    }\n    \n    return gamma\n}\n\n/**\n * \n * @param {Number} xg  - integar or fraction number\n * @returns natural log of gamma function\n */\n\nfunction lgamma(xg){\n    return Math.log(gamma(xg))\n}\n\nfunction t_test_1_sample(mean, m, s, n) {\n    if (s == 0) s = 1;\n    var t = ((mean - m) / s) * Math.sqrt(n)\n    var p = 1.0 - TdistributionCDF(Math.abs(t), (n - 1))\n    return p\n}\n\nfunction t_test_2_samples(m1, s1, n1, m2, s2, n2) {\n    if (s1 == 0) s1 = 1;\n    if (s2 == 0) s2 = 1;\n    var t = (m1 - m2) / Math.sqrt(s1 ** 2 / n1 + s2 ** 2 / n2);\n    var df = ((s1 ** 2 / n1 + s2 ** 2 / n2) ** 2 * (n1 - 1) * (n2 - 1)) /\n        ((s1 ** 4 * (n2 - 1)) / n1 ** 2 + (s2 ** 4 * (n1 - 1)) / n2 ** 2);\n\n    var p = 1.0 - TdistributionCDF(Math.abs(t), parseInt(df + 0.5))\n\n    return p\n}\n\nexport default {TdistributionCDF, gamma, t_test_1_sample, t_test_2_samples};","import t_dist from './t_dist.js'\nimport g_utils from './GeneralUtil.js'\n\n\nclass CombinedCaller{\n    constructor(wigFeatures, binSize) {\n        this.wigFeatures = wigFeatures\n        this.binSize = binSize\n        // let fit_obj = this.get_fit()\n        // this.globalMean = fit_obj.globalMean\n        // this.globalStd = fit_obj.globalStd\n    }\n    get_fit(){\n        var fit_info = new g_utils.GetFit(this.wigFeatures)\n        var [globalMean, globalStd] = fit_info.fit_data()\n\n        return {globalMean:globalMean, globalStd:globalStd}\n       \n    }\n    async call_2d(omin=null, mcount=null, event_type=\"both\", max_distance=0.1, baf_threshold=0, max_copy_number=10, min_cell_fraction=0.0){\n        \n        let fit_obj = this.get_fit()\n        this.globalMean = fit_obj.globalMean\n        this.globalStd = fit_obj.globalStd\n        \n        let overlap_min = omin==null ?  0.05 * this.binSize / 3e9: omin ;\n        let min_count = mcount == null ? parseInt(this.binSize / 10000) : mcount ;\n\n        let gstat_rd0 = []\n        let gstat_rd_all = []\n        let gstat_rd = []\n        let gstat_baf = []\n        let gstat_error = []\n        let gstat_lh = []\n        let gstat_n = []\n        let gstat_event = []\n        \n        for (const [chr, wig] of Object.entries(this.wigFeatures)) {\n            let segments = []\n            let levels = []\n            let likelihoods = []\n            \n            wig.forEach((bin, bin_idx) => {\n                if (bin.hets_count > 4 ){\n                    \n                    if( bin.dp_count > min_count ){\n                        segments.push([bin_idx])\n                        levels.push(bin.binScore)\n                        likelihoods.push(bin.likelihood_score)\n                        delete bin.likelihood_score\n                        \n                    }\n                }\n            })\n\n            let diff_level = []\n            for(let i=1; i<levels.length; i++){\n                diff_level.push(Math.abs(levels[i] - levels[i-1]))\n            }\n            let min_flank = [0]\n            for(let i=1; i<diff_level.length; i++){\n                min_flank.push(Math.min(diff_level[i-1], diff_level[i]))    \n            }\n            min_flank.push(0)\n\n            let error  = levels.map((x, x_idx) => {return Math.sqrt(Math.sqrt(x) ** 2 + this.globalStd ** 2 + Math.pow(min_flank[x_idx]/2, 2));});\n            \n            let overlaps = []\n            \n            for(let i=0; i< segments.length-1; i++){\n                \n                let lh_overlap = 0\n                try{\n                    lh_overlap = likelihood_overlap(likelihoods[i], likelihoods[i+1])\n                }catch{\n                    console.log(\"Overlap failed: \", i, likelihoods[i], segments[i+1], likelihoods[i+1])\n                }\n                \n                let rd_overlap = normal_overlap_approx(levels[i], error[i], levels[i+1], error[i+1])\n                overlaps.push(rd_overlap * lh_overlap)\n                \n            }\n            \n            while(overlaps.length >0) {\n                overlaps = overlaps.filter(num => typeof num === \"number\");\n                \n                let max_overlap = arrayMax(overlaps)\n                if(isNaN(max_overlap)){\n                    console.log('NaN value', overlaps)\n                }\n                if(max_overlap < overlap_min){\n                    // console.log(\"maxoverlap \",max_overlap,  \"is smaller than overlap min\")\n                    break\n                }\n                let i = overlaps.indexOf(max_overlap)\n                \n                let merge_level = normal_merge(levels[i], error[i], levels[i + 1], error[i + 1]);\n                \n                let nlh\n                let nlh_sum;\n                try{\n                    nlh = likelihoods[i].map((l_value, l_idx) => { return l_value * likelihoods[i+1][l_idx]})\n                \n                    nlh_sum = nlh.reduce((a, c_value) => {return a + c_value});\n                    \n                }catch{\n                    console.log(likelihoods)\n                    console.log('max_overlap:', max_overlap, i, overlaps.length)\n                    console.log('likelihood: ', i ,likelihoods[i], likelihoods[i+1])\n                    console.log('nlh: ', nlh_sum)\n                }\n                // nlh_sum = nlh.reduce((a, c_value) => {return a + c_value});\n\n                levels[i] = merge_level.nl\n                error[i] = merge_level.ne\n                \n                likelihoods[i] = nlh.map(function(item) { return item/nlh_sum } )\n                \n                segments[i].push(...segments[i+1])\n\n                levels.splice(i + 1, 1)\n                error.splice(i + 1, 1)\n                segments.splice(i + 1, 1)\n                likelihoods.splice(i + 1, 1)\n                overlaps.splice(i, 1)\n                \n                if(i < overlaps.length){\n                    \n                    let rd_overlap = normal_overlap_approx(levels[i], error[i], levels[i+1], error[i+1])\n                    let new_overlap = rd_overlap * likelihood_overlap(likelihoods[i], likelihoods[i + 1])\n                    \n                    overlaps[i] = new_overlap\n                }\n                if(i > 0){\n                    let new_overlap = normal_overlap_approx(levels[i - 1], error[i - 1], levels[i], error[i]) \n                    * likelihood_overlap(likelihoods[i - 1], likelihoods[i])\n                    overlaps[i - 1] = new_overlap\n                }\n\n            }\n\n            let iter_count = 0\n            let ons = -1\n            while(true){\n                overlaps = []\n                for(let i=0; i< levels.length; i++){\n                    for(let j=i; j<levels.length; j++){\n                        if(segments[j][0] - segments[i].at(-1) < max_distance * (segments[i].length + segments[j].length)){\n                            overlaps.push(normal_overlap_approx(levels[i], error[i], levels[j], error[j]) * likelihood_overlap(likelihoods[i], likelihoods[j]))\n                        }\n                    }\n                }\n                \n                if(overlaps.length == 0){\n                    break\n                }\n                let max_overlap = arrayMax(overlaps)\n                if(max_overlap < overlap_min){\n                    break\n                }\n                let i = 0 \n                let j = 1\n                while (i < segments.length - 1){\n                    let overlap_value = normal_overlap_approx(levels[i], error[i], levels[j], error[j]) * likelihood_overlap(likelihoods[i], likelihoods[j])\n\n                    if((segments[j][0] - segments[i].at(-1)) < max_distance * (segments[i].length + segments[j].length) && overlap_value == max_overlap){\n                        let merge_level = normal_merge(levels[i], error[i], levels[i + 1], error[i + 1]);\n\n                        levels[i] = merge_level.nl\n                        error[i] = merge_level.ne\n                        let nlh = likelihoods[i].map((l_value, l_idx) => { return l_value * likelihoods[i+1][l_idx]})\n                        let nlh_sum = nlh.reduce((a, c_value) => {return a + c_value});\n                        likelihoods[i] = nlh.map(function(item) { return item/nlh_sum } )\n\n                        \n                        segments[i].push(...segments[i+1])\n                        segments[i] = segments[i].sort((a,b) => a-b)\n\n                        levels.splice(j, 1)\n                        error.splice(j, 1)\n                        segments.splice(j, 1)\n                        likelihoods.splice(j, 1)\n                        \n                        if(j >= segments.length){\n                            i += 1\n                            j = i + 1\n                        }\n\n                    }else{\n                        j += 1\n                        if(j >= segments.length){\n                            i += 1\n                            j = i + 1\n                        }\n                    }\n                }\n                iter_count = iter_count + 1\n                if(ons == segments.length){\n                    break\n                }\n                ons = segments.length\n            }\n            // console.log('final segments', segments)\n            \n            segments.forEach((seg_value, seg_idx) => {\n                let baf_info = likelihood_baf_pval(likelihoods[seg_idx])\n                if(seg_value.length > 1){\n                    let q0 = 0\n                    let srdp = 0\n                    let homs = 0\n                    let hets = 0\n\n                    seg_value.forEach((bin, bin_idx) =>{\n                        gstat_rd_all.push(wig[bin])\n                        if(baf_info.mean <= baf_threshold){\n                            gstat_rd0.push(wig[bin])\n                        }\n                        wig[bin].segment_score = levels[seg_idx]\n                    });\n                    gstat_rd.push(levels[seg_idx])\n                    gstat_error.push(error[seg_idx])\n                    gstat_baf.push(baf_info.mean)\n                    gstat_lh.push(likelihoods[seg_idx])\n\n                }\n\n            });\n\n            continue\n        }\n        \n        // Third stage for call\n        \n        // let data = gstat_rd0.lengthn == 0 ?  gstat_rd_all: gstat_rd0 ;\n        \n        let points = parseInt(1000 * (1 - min_cell_fraction))\n        if(points == 0){\n            points = 1\n        }\n        let x = g_utils.linspace(min_cell_fraction, 1, points)\n        let master_lh = {}\n        let germline_lh = {}\n        for(let cn=10; cn > -1; cn--){\n            for(let h1=0; h1 < (cn/2+1); h1++){\n                let h2 = cn - h1\n                let mrd = x.map((v, idx) => {return 1-v +v*cn/2})\n                let g_mrd = cn / 2\n                let g_mbaf;\n                let mbaf;\n                if(cn > 0){\n                    g_mbaf = 0.5 - (h1 / (h1 + h2))\n                    mbaf = x.map((v, idx) => {return 0.5 - (1 - v + v * h1) / (2 - 2 * v + (h1 + h2) * v)})\n                   \n                }else{\n                    g_mbaf = 0\n                    mbaf =  x.map((v, idx) => {return 0*v})\n                }\n                \n                for( let ei=0; ei < gstat_rd.length; ei++){\n                        \n                    let g_lh = normal(g_mrd * this.globalMean, 1, gstat_rd[ei], gstat_error[ei]) * likelihood_of_baf(gstat_lh[ei], 0.5 + g_mbaf)\n                    if(ei in germline_lh){\n                        germline_lh[ei].push([cn, h1, h2, g_lh, 1.0])\n                    }else{\n                        germline_lh[ei] = [cn, h1, h2, g_lh, 1.0]\n                    }\n                    let slh = 0\n                    let max_lh = 0\n                    let max_x = 0\n                    mrd.forEach((mi, idx) => {\n                        if(!isNaN(mbaf[idx])){\n                            let tmpl = normal(mi * this.globalMean, 1, gstat_rd[ei], gstat_error[ei]) * likelihood_of_baf(gstat_lh[ei], 0.5 + mbaf[idx])\n                            slh += tmpl\n                            if(tmpl > max_lh){\n                                max_lh = tmpl\n                                max_x = x[idx]\n                            }\n                        }\n                    });\n                    if(ei in master_lh){\n                        master_lh[ei].push([cn, h1, h2, slh / x.length, max_x])\n                    }else{\n                        master_lh[ei] = [cn, h1, h2, slh / x.length, max_x]\n                    }\n                }\n                \n                for( let ei=0; ei < gstat_rd.length; ei++){\n                    if(event_type == \"germline\"){\n                        master_lh[ei].sort((a, b) => a[3] - b[3]);\n                    }\n                    else{\n                        master_lh[ei].sort((a, b) => a[3] - b[3]);\n                        if(event_type == \"both\"){\n                            \n                            germline_lh[ei].sort((a, b) => a[3] - b[3]);\n                            if(germline_lh[ei][0][3] > master_lh[ei][0][3]){\n                                //let tmp_list = list(filter( lambda x: x[0] != germline_lh[ei][0][0] and x[1] != germline_lh[ei][0][1], master_lh[ei]))\n                                let tmp_list = master_lh[ei].filter((x) => (x[0] != germline_lh[ei][0][0]) && (x[1] <= germline_lh[ei][0][1]))\n                                // console.log('tmp_list', tmp_list)\n                                // master_lh[ei] = [germline_lh[ei][0]] + tmp_list\n                                master_lh[ei] = [germline_lh[ei][0]].push(...tmp_list)\n                            }\n                        }\n                    }\n                }\n                let chr_calls;\n                for( let ei=0; ei < gstat_rd.length; ei++){\n                    let etype = \"cnnloh\"\n                    let netype = 0\n                    if(master_lh[ei][0][0] > 2){\n                        etype = \"duplication\"\n                        netype = 1\n                    }\n                    if(master_lh[ei][0][0] < 2){\n                        etype = \"deletion\"\n                        netype = -1\n                    }\n                    let cnv = gstat_rd[ei] / this.globalMean;\n                    let rd_pval = t_dist.t_test_1_sample(this.globalMean, gstat_rd[ei], gstat_error[ei], gstat_n[ei])\n\n                    // let pval = rd_pval * gstat_event[ei][\"baf_pval\"];\n                    let lh_del = 0\n                    let lh_loh = 0\n                    let lh_dup = 0\n                    // console.log(etype)\n\n                }\n                \n\n                // break\n            }\n            \n        }\n        \n        var rawbinScore = this.formatDataStructure(this.wigFeatures, 'binScore', this.globalMean)\n        var callScore = this.formatDataStructure(this.wigFeatures, 'segment_score', this.globalMean)\n        \n        return {binScore: rawbinScore, segment_score: callScore}\n        \n    }\n\n    formatDataStructure(wigFeatures, feature_column, scaling_factor = 1) {\n        const results = []\n        for (const [chr, wig] of Object.entries(wigFeatures)) {\n\n            wig.forEach(sample => {\n                var new_sample = { ...sample }\n                if (scaling_factor != 1) {\n                    new_sample.value = sample[feature_column] / scaling_factor * 2\n                }\n                results.push(new_sample)\n            })\n        }\n\n        return results\n    }\n\n    formatDataStructure_BAF(feature_column, scaling_factor = 2) {\n        const baf1 = []\n        const baf2 = []\n        for (const [chr, wig] of Object.entries(this.wigFeatures)) {\n\n            wig.forEach(sample => {\n                \n                var baf1_value = { ...sample }\n                var baf2_value = { ...sample }\n                \n                let value = sample[feature_column]\n                if (value != 0.5){\n                    baf2_value.value = -2 * (1 - value)\n                    baf2.push(baf2_value)\n                }\n                baf1_value.value = -2 * value\n                baf1.push(baf1_value)\n                    \n            })\n        }\n        \n\n        return [baf1, baf2]\n    }\n}\n\nfunction arrayMax(arr) {\n    return arr.reduce(function (p, v) {\n      return ( p > v ? p : v );\n    });\n  }\n\n/**\n * Normal distribution.\n * \n * @param {float} x - Variable.\n * @param {float} a - area\n * @param {float} x0 -  Mean value\n * @param {float} sigma - Sigma\n * @returns {float} - Value of distribution in x.\n */\nfunction normal(x, a, x0, sigma){\n  \n  return a * Math.exp(-1* (x - x0) ** 2 / (2 * sigma ** 2)) / Math.sqrt(2 * Math.PI) / sigma\n\n}\n\n/**\n *  Calculates two normal distributions overlap area.\n * \n * @param {float} m1 - Mean value of the first distribution\n * @param {float} s1 - Sigma of the first distribution\n * @param {float} m2 - Mean value for second distribution\n * @param {float} s2 - Sigma of the second distribution\n * \n * @returns {float} area - Area of overlap\n */\nfunction normal_overlap_approx(m1, s1, m2, s2){\n   \n    return Math.exp(-1* (m1-m2)**2/ (s1**2+s2**2))\n}\n\n\n/**\n * Returns overlap area of two likelihood functions.\n * \n * @param {*} lk1 - First likelihood function.\n * @param {*} lk2 - Second likelihood function.\n * \n * @returns {float}  - Overlap area.\n */\nfunction likelihood_overlap(likelihood_1, likelihood_2){\n    let sum;\n    try{\n        sum = likelihood_1.reduce((accumulator, currentValue, currentIndex) => {return accumulator + Math.min(currentValue, likelihood_2[currentIndex])});\n    }catch{\n        console.log(\"Failed to find likelihood overlap: \", likelihood_1, likelihood_2)\n        return 0\n    }\n\n    return sum\n}\n\n/**\n * Calculates normal distribution that is product of two given normal distributions.\n * \n * @param {float} m1 - Mean value of the first distribution\n * @param {float} s1 - Sigma of the first distribution\n * @param {float} m2 - Mean value for second distribution\n * @param {float} s2 - Sigma of the second distribution\n * @returns {Object} An object representing the first distribution\n * @property {float} nl - Mean value of the first distribution\n * @property {float} ne - Sigma of the first distribution\n */\nfunction normal_merge(m1, s1, m2, s2){\n   \n    if((s1 == 0) && (s2 == 0)){\n        return {nl: 0.5 * (m1 + m2), ne: 0}\n    }\n    else{\n        return {nl: (m1 * s2 * s2 + m2 * s1 * s1) / (s1 * s1 + s2 * s2), ne: Math.sqrt(s1 * s1 * s2 * s2 / (s1 * s1 + s2 * s2))}\n    }\n}\n\n/**\n * Calculates likelihood for given baf\n * @param {*} likelihood \n * @param {*} baf \n * @returns {float}  likelihood value\n */\nfunction likelihood_of_baf(likelihood, baf){\n   \n    let bin = parseInt(baf * (likelihood.length - 1))\n    let fr = baf * (likelihood.length - 1) - bin\n    if(bin < likelihood.length - 1){\n        return likelihood[bin] * (1 - fr) + likelihood[bin + 1] * fr\n    }\n    else{\n        return likelihood[bin]\n    }\n}\n\n/**\n * \n * Calculates baf level and p-value for given likelihood function.\n * \n * @param {*} likelihood \n * @returns {Object} An object representing BAF\n * @property {float} mean  BAF level (difference from 1/2)\n * @property {float} p  p-value for event different than 1/2\n */\nfunction likelihood_baf_pval(likelihood) {\n    const res = likelihood.length;\n    const max_lh = Math.max(...likelihood);\n    let ix = likelihood.indexOf(max_lh);\n    if (ix > Math.floor(res / 2)) {\n      ix = res - 1 - ix;\n    }\n    const b = (res / 2 - ix) / (res + 1);\n  \n    const ix1 = Math.floor((res / 2 + ix) / 2);\n    const ix2 = res - 1 - ix1;\n    let p = likelihood.slice(ix1, ix2 + 1).reduce((acc, val) => acc + val, 0) / likelihood.reduce((acc, val) => acc + val, 0);\n    if (ix === Math.floor(res / 2)) {\n      p = 1.0;\n    }\n    return {mean:b, p:p};\n  }\n\n  export default {CombinedCaller}","\nimport g_utils from './GeneralUtil.js'\nimport t_dist from './t_dist.js'\n\n\nfunction erf(x) {\n    var m = 1.0, s = 1.0, sum = x * 1.0;\n    for (var i = 1; i < 50; i++) {\n        m *= i;\n        s *= -1;\n        sum += (s * Math.pow(x, 2.0 * i + 1.0)) / (m * (2.0 * i + 1.0));\n    }\n    return (2 * sum) / Math.sqrt(3.14159265358979)\n}\n\nfunction getEValue(mean, sigma, rd, start, end) {\n    var arr = new DataStat(rd.slice(start, end));\n    if (arr.std == 0) {\n        if (sigma > 0) { arr.std = (sigma * arr.mean) / mean }\n        else { arr.std = 1 }\n    }\n    var p_val = t_test_1_sample(mean, arr.mean, arr.std, end - start) / (end - start)\n    return p_val\n}\n\nfunction gaussianEValue(mean, sigma, rd, start, end) {\n    var arr = new DataStat(rd.slice(start, end))\n\n    if (arr.mean < mean) {\n        var x = (arr.max - arr.mean) / (sigma * Math.sqrt(2))\n        return Math.pow(0.5 * (1 + erf(x)), end - start)\n    }\n    var x = (arr.min - arr.mean) / (sigma * Math.sqrt(2))\n    return Math.pow(0.5 * (1 - erf(x)), end - start)\n}\n\nfunction adjustToEvalue(mean, sigma, rd, start, end, pval, max_steps = 1000) {\n    var val = getEValue(mean, sigma, rd, start, end)\n    var step = 0, done = false\n    while ((val > pval) & !done & (step < max_steps)) {\n        done = true\n        step += 1\n        var [v1, v2, v3, v4] = [1e10, 1e10, 1e10, 1e10];\n        if (start > 0) v1 = getEValue(mean, sigma, rd, start - 1, end);\n        if (end - start > 2) {\n            var v2 = getEValue(mean, sigma, rd, start + 1, end)\n            var v3 = getEValue(mean, sigma, rd, start, end - 1)\n        }\n        if (end < rd.length) { var v4 = getEValue(mean, sigma, rd, start, end + 1) }\n        if (Math.min[(v1, v2, v3, v4)] < val) {\n            done = false\n            if (v1 == Math.min[(v1, v2, v3, v4)]) {\n                start -= 1;\n                val = v1;\n            }\n            elif(v2 == Math.min[(v1, v2, v3, v4)]); {\n                start += 1;\n                val = v2;\n            }\n            elif(v3 == Math.min[(v1, v2, v3, v4)]); {\n                end -= 1;\n                val = v3;\n            }\n            elif(v4 == Math.min[(v1, v2, v3, v4)]); {\n                end += 1;\n                val = v4;\n            }\n        }\n    }\n    if (val <= pval) { return start, end }\n    return 0;\n}\n\nclass DataStat {\n    constructor(data_array) {\n        this.data = data_array\n        this.mean = data_array.reduce((acc, n) => acc + n) / data_array.length\n        this.std = Math.sqrt(data_array.reduce((acc, n) => (n - this.mean) ** 2) / data_array.length)\n    }\n}\n\nfunction t_test_1_sample(mean, m, s, n) {\n    if (s == 0) s = 1;\n    var t = ((mean - m) / s) * Math.sqrt(n)\n    var p = 1.0 - t_dist.TdistributionCDF(Math.abs(t), (n - 1))\n    return p\n}\n\nfunction t_test_2_samples(m1, s1, n1, m2, s2, n2) {\n    if (s1 == 0) s1 = 1;\n    if (s2 == 0) s2 = 1;\n    var t = (m1 - m2) / Math.sqrt(s1 ** 2 / n1 + s2 ** 2 / n2);\n    var df = ((s1 ** 2 / n1 + s2 ** 2 / n2) ** 2 * (n1 - 1) * (n2 - 1)) /\n        ((s1 ** 4 * (n2 - 1)) / n1 ** 2 + (s2 ** 4 * (n1 - 1)) / n2 ** 2);\n\n    var p = 1.0 - t_dist.TdistributionCDF(Math.abs(t), parseInt(df + 0.5))\n\n    return p\n}\n\nexport class Partition {\n\n    constructor(rd, mean, std) {\n        this.rd = rd\n        this.mean = mean\n        this.std = std\n        this.bin_bands = [2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56, 64, 80, 96, 112, 128]\n    }\n\n    get_rd_signal_bandwidth(data_array) {\n        var new_array = []\n\n        data_array.forEach((value, index) => {\n            var tmp_value = 0;\n            if (value > this.mean / 4) {\n                tmp_value = this.mean / (this.std ** 2 * value);\n            } else {\n                tmp_value = 4 / this.std ** 2;\n            }\n            new_array.push(tmp_value)\n        })\n        return new_array\n    }\n\n    meanShiftCaller(repeats = 3) {\n        var ChrLevels = {}\n        \n        Object.entries(this.rd).forEach(([chr, chr_rd]) => {\n            var masked = new Array(chr_rd.length).fill(false)\n\n            // set the level\n            var levels = new Array(chr_rd.length)\n\n            for (let b = 0; b < chr_rd.length; b++) {\n                if (!masked[b]) { levels[b] = chr_rd[b]; }\n            }\n\n            this.bin_bands.forEach((bin_band, bin_band_index) => {\n                // not masked levels at current bin\n                // get boolean values\n                var not_masked = masked.map((value, index) => { return !value; })\n\n                // not masked level at current bin\n                var nm_levels = []\n\n                Object.entries(chr_rd).forEach(([k, v]) => { nm_levels.push(v.binScore) })\n                \n                // set the mask border\n                var mask_borders = [0]\n                var count = 0\n\n                for (let i = 0; i < masked.length; i++) {\n                    if (masked[i]) {\n                        if (count > 0) {\n                            mask_borders.push(mask_borders[mask_borders.length - 1] + count - 1)\n                            count = 0;\n                        }\n                    } else { count += 1 }\n                }\n\n                mask_borders.shift()\n\n                // repeating steps\n                for (let step = 0; step < repeats; step++) {\n                    var isig = this.get_rd_signal_bandwidth(nm_levels)\n                    var grad = new Array(nm_levels.length).fill(0);\n\n                    for (let i = 0; i < nm_levels.length; i++) {\n                        for (let j = i - 3 * bin_band; j <= i + 3 * bin_band + 1; j++) {\n                            if (j < 0 || j >= nm_levels.length) continue;\n                            if (Math.abs(i - j) >= nm_levels.length) continue;\n\n                            var g_value = (j - i) * Math.exp((-0.5 * (j - i) ** 2) / bin_band ** 2) *\n                                Math.exp(-0.5 * (nm_levels[i] - nm_levels[j]) ** 2 * isig[i]);\n\n                            grad[i] += g_value\n                        }\n                    }\n                    \n                    // get the border\n                    var border = new Array();\n                    for (var i = 0; i < grad.length - 1; i++) {\n                        if ((grad[i] < 0) & (grad[i + 1] >= 0)) border.push(i);\n                    }\n\n                    border.push(grad.length - 1)\n                    border = border.concat(mask_borders).sort((a, b) => a - b)\n                    border = Array.from(new Set(border))\n\n                    var pb = 0;\n                    for (var i = 0; i < border.length; i++) {\n                        var range_array = nm_levels.slice(pb, border[i] + 1)\n                        var range_mean = range_array.reduce((acc, n) => acc + n) / range_array.length\n\n                        nm_levels.fill(range_mean, pb, border[i] + 1)\n                        pb = border[i] + 1\n                    }\n                }\n\n                for (var i = 0, j = 0; i < levels.length; i++) {\n                    if (not_masked[i]) {\n                        levels[i] = nm_levels[j]\n                        j++\n                    }\n                }\n\n                //get the border\n                var border = new Array();\n                for (var i = 0; i < levels.length - 1; i++) {\n                    //if(i == levels.length -1) continue;\n                    var diff = Math.abs(levels[i + 1] - levels[i]);\n\n                    if (diff > 0.01) border.push(i + 1);\n                }\n\n                border.unshift(0);\n                border.push(levels.length);\n\n                // reset the mask\n                masked = new Array(this.rd.length).fill(false);\n\n                // check the borders\n                for (var i = 1; i < border.length; i++) {\n                    var seg = [border[i - 1], border[i]]\n                    var seg_left = [border[i - 1], border[i - 1]]\n                    if (i > 1) { seg_left[0] = border[i - 2] } else continue;\n\n                    var seg_right = [border[i], border[i]];\n                    if (i < border.length - 1) { seg_right[1] = border[i + 1] } else continue;\n\n                    var n = seg[1] - seg[0];\n                    var n_left = seg_left[1] - seg_left[0];\n                    var n_right = seg_right[1] - seg_right[0];\n                    if (n <= 1) continue;\n                    var seg_array = new DataStat(levels.slice(seg[0], seg[1]));\n\n                    if (n_right <= 15 || n_left <= 15 || n <= 15) {\n                        var ns = 1.8 * Math.sqrt(levels[seg_left[0]] / this.mean) * this.std;\n                        if (Math.abs(levels[seg_left[0]] - levels[seg[0]]) < ns) { continue }\n\n                        ns = 1.8 * Math.sqrt(levels[seg_right[0]] / this.mean) * this.std;\n                        if (Math.abs(levels[seg_right[0]] - levels[seg[0]]) < ns) { continue }\n                    } else {\n                        var seg_left_array = levels.slice(seg_left[0], seg_left[1])\n                        var seg_left_1 = new DataStat(seg_left_array);\n\n                        var seg_right_array = levels.slice(seg_right[0], seg_right[1])\n                        var seg_right_1 = new DataStat(seg_right_array);\n\n                        var ttest_2sample_1 = t_test_2_samples(seg_array.mean, seg_array.std, seg_array.data.length,\n                            seg_left_1.mean, seg_left_1.std, seg_left_1.data.length);\n                        if (ttest_2sample_1 > (0.01 / genome_size) * bin_size * (n + n_left)) { continue }\n\n                        var ttest_2sample_2 = t_test_2_samples(seg_array.mean, seg_array.std, seg_array.data.length,\n                            seg_right_1.mean, seg_right_1.std, seg_right_1.data.length);\n                        if (ttest_2sample_2 > (0.01 / genome_size) * bin_size * (n + n_right)) { continue }\n                    }\n\n                    var ttest_1sample_1 = t_test_1_sample(this.mean, seg_array.mean, seg_array.std, seg_array.data.length)\n                    if (ttest_1sample_1 > 0.05) { continue }\n                    let segments_rd = nm_levels.slice(seg[0], seg[1])\n                    var raw_seg_data = new DataStat(segments_rd);\n\n                    masked.fill(true, seg[0], seg[1]);\n                    levels.fill(raw_seg_data.mean, seg[0], seg[1]);\n                }\n            });\n\n            ChrLevels[chr] = levels\n\n        });\n        return ChrLevels\n    }\n    call_mean_shift(repeats = 3) {\n        const bin_size = 1000;\n        // const genome_size = bin_size * this.rd.length;\n        const genome_size = 2871000000;\n        var masked = new Array(this.rd.length).fill(false);\n\n        // set the level\n        var levels = new Array(this.rd.length);\n        for (var b = 0; b < this.rd.length; b++) {\n            if (!masked[b]) {\n                levels[b] = this.rd[b];\n            }\n        }\n        this.bin_bands.forEach((bin_band, bin_band_index) => {\n            // not masked levels at current bin\n            // get boolean values\n            var not_masked = masked.map((value, index) => {\n                return !value;\n            });\n\n            // not masked level at current bin\n            // var nm_levels = not_masked.map((value, index) => {if(value) return this.rd[index]});\n            var nm_levels = [];\n            not_masked.forEach((value, index) => {\n                if (value) nm_levels.push(this.rd[index]);\n            });\n\n            // console.log(bin_band, nm_levels);\n\n            // set the mask border\n            var mask_borders = [0];\n            var count = 0;\n\n            for (var i = 0; i < masked.length; i++) {\n                if (masked[i]) {\n                    if (count > 0) {\n                        mask_borders.push(\n                            mask_borders[mask_borders.length - 1] + count - 1,\n                        );\n                        count = 0;\n                    }\n                } else {\n                    count += 1;\n                }\n            }\n\n            mask_borders.shift();\n            // repeating steps\n            for (var step = 0; step < repeats; step++) {\n                var isig = this.get_rd_signal_bandwidth(nm_levels);\n                // console.log(isig);\n                var grad = new Array(nm_levels.length).fill(0);\n\n                for (var i = 0; i < nm_levels.length; i++) {\n                    for (var j = i - 3 * bin_band; j <= i + 3 * bin_band + 1; j++) {\n                        if (j < 0 || j >= nm_levels.length) continue;\n                        if (Math.abs(i - j) >= nm_levels.length) continue;\n\n                        var g_value =\n                            (j - i) *\n                            Math.exp((-0.5 * (j - i) ** 2) / bin_band ** 2) *\n                            Math.exp(-0.5 * (nm_levels[i] - nm_levels[j]) ** 2 * isig[i]);\n                        // console.log(g_value);\n                        grad[i] += g_value;\n                    }\n                }\n                // console.log(grad);\n\n                // get the border\n                var border = new Array();\n                for (var i = 0; i < grad.length - 1; i++) {\n                    if ((grad[i] < 0) & (grad[i + 1] >= 0)) border.push(i);\n                }\n\n                border.push(grad.length - 1);\n                border = border.concat(mask_borders).sort((a, b) => a - b);\n                border = Array.from(new Set(border));\n\n                var pb = 0;\n                for (var i = 0; i < border.length; i++) {\n                    var range_array = nm_levels.slice(pb, border[i] + 1);\n                    var range_mean =\n                        range_array.reduce((acc, n) => acc + n) / range_array.length;\n\n                    nm_levels.fill(range_mean, pb, border[i] + 1);\n                    pb = border[i] + 1;\n                }\n            }\n\n            for (var i = 0, j = 0; i < levels.length; i++) {\n                if (not_masked[i]) {\n                    levels[i] = nm_levels[j];\n                    j++;\n                }\n            }\n\n            //get the border\n            var border = new Array();\n            for (var i = 0; i < levels.length - 1; i++) {\n                //if(i == levels.length -1) continue;\n                var diff = Math.abs(levels[i + 1] - levels[i]);\n\n                if (diff > 0.01) border.push(i + 1);\n            }\n\n            border.unshift(0);\n            border.push(levels.length);\n\n            // reset the mask\n            masked = new Array(this.rd.length).fill(false);\n\n            // check the borders\n            for (var i = 1; i < border.length; i++) {\n                var seg = [border[i - 1], border[i]];\n                var seg_left = [border[i - 1], border[i - 1]];\n                if (i > 1) {\n                    seg_left[0] = border[i - 2];\n                } else continue;\n\n                var seg_right = [border[i], border[i]];\n                if (i < border.length - 1) {\n                    seg_right[1] = border[i + 1];\n                } else continue;\n\n                var n = seg[1] - seg[0];\n                var n_left = seg_left[1] - seg_left[0];\n                var n_right = seg_right[1] - seg_right[0];\n                if (n <= 1) continue;\n                var seg_array = new DataStat(levels.slice(seg[0], seg[1]));\n\n                if (n_right <= 15 || n_left <= 15 || n <= 15) {\n                    var ns = 1.8 * Math.sqrt(levels[seg_left[0]] / this.mean) * this.std;\n                    if (Math.abs(levels[seg_left[0]] - levels[seg[0]]) < ns) {\n                        continue;\n                    }\n\n                    ns = 1.8 * Math.sqrt(levels[seg_right[0]] / this.mean) * this.std;\n                    if (Math.abs(levels[seg_right[0]] - levels[seg[0]]) < ns) {\n                        continue;\n                    }\n                } else {\n                    var seg_left_array = levels.slice(seg_left[0], seg_left[1]);\n                    var seg_left_1 = new DataStat(seg_left_array);\n\n                    var seg_right_array = levels.slice(seg_right[0], seg_right[1]);\n                    var seg_right_1 = new DataStat(seg_right_array);\n\n                    var ttest_2sample_1 = t_test_2_samples(\n                        seg_array.mean,\n                        seg_array.std,\n                        seg_array.data.length,\n                        seg_left_1.mean,\n                        seg_left_1.std,\n                        seg_left_1.data.length,\n                    );\n                    if (\n                        ttest_2sample_1 >\n                        (0.01 / genome_size) * bin_size * (n + n_left)\n                    ) {\n                        continue;\n                    }\n\n                    var ttest_2sample_2 = t_test_2_samples(\n                        seg_array.mean,\n                        seg_array.std,\n                        seg_array.data.length,\n                        seg_right_1.mean,\n                        seg_right_1.std,\n                        seg_right_1.data.length,\n                    );\n                    if (\n                        ttest_2sample_2 >\n                        (0.01 / genome_size) * bin_size * (n + n_right)\n                    ) {\n                        continue;\n                    }\n                }\n\n                var ttest_1sample_1 = t_test_1_sample(\n                    this.mean,\n                    seg_array.mean,\n                    seg_array.std,\n                    seg_array.data.length,\n                );\n                if (ttest_1sample_1 > 0.05) {\n                    continue;\n                }\n                var raw_seg_data = new DataStat(this.rd.slice(seg[0], seg[1]));\n\n                masked.fill(true, seg[0], seg[1]);\n                levels.fill(raw_seg_data.mean, seg[0], seg[1]);\n            }\n        });\n        return levels;\n    }\n\n    cnv_calling(bin_size = 100000) {\n        var delta = 0.25\n        var delta = delta * this.mean\n\n        var min = this.mean - delta, max = this.mean + delta;\n        // console.log('min: ', min, ', Max: ', max)\n\n        // console.log('delta', delta)\n        var normal_genome_size = 2971000000\n\n        var levels = this.meanShiftCaller()\n\n        \n        var merged_level = {}\n        var cnv_levels = []\n        // var t_value = cdf(Math.abs(10), (5)) \n        // console.log('Testing student t test:', t_value)\n\n        Object.entries(levels).forEach(([chr, chr_levels]) => {\n            \n            var done = false\n            while (!done) {\n                done = true\n\n                //\n                // get the borders\n                //\n                var borders = new Array(1).fill(0);\n                for (let i = 0; i < chr_levels.length - 1; i++) {\n                    var diff = Math.abs(chr_levels[i + 1] - chr_levels[i]);\n                    if (diff > 0.01) borders.push(i + 1);\n                }\n                borders.push(chr_levels.length);\n\n                for (let ix = 0; ix < borders.length - 2; ix++) {\n                    var v1 = Math.abs(chr_levels[borders[ix]] - chr_levels[borders[ix + 1]])\n                    // console.log(ix, v1);\n                    if (v1 < delta) {\n                        var v2 = v1 + 1, v3 = v1 + 1;\n\n                        if (ix > 0) { v2 = Math.abs(chr_levels[borders[ix]] - chr_levels[borders[ix - 1]]) }\n                        if (ix < borders.length - 3) { v3 = Math.abs(levels[borders[ix + 1]] - chr_levels[borders[ix + 2]]) }\n\n                        if (v1 < v2 && v1 < v3) {\n                            done = false\n\n                            var tmp_array = new DataStat(chr_levels.slice(borders[ix], borders[ix + 2]))\n                            chr_levels.fill(tmp_array.mean, borders[ix], borders[ix + 2]);\n                            borders.splice(ix + 1, ix + 1);\n                        }\n                    }\n                }\n            }\n            // console.log('updated levels', chr_levels)\n\n            // var chr_rd = this.rd[chr]\n            var chr_rd = []\n            Object.entries(this.rd[chr]).forEach(([bin, binDict]) => { chr_rd.push(binDict.binScore) });\n            // console.log('cnv_calling', chr_rd)\n\n            //\n            // Calling Segments\n            //\n\n            //var flags = [\"\"] * levels.length;\n            var flags = new Array(chr_levels.length).fill(\"\")\n            var segments = []\n\n            // console.log('default levels', chr, chr_levels)\n            var b = 0\n            var pval = (0.05 * bin_size) / normal_genome_size\n            while (b < chr_levels.length) {\n                var b0 = b, border_start = b;\n                while ((b < chr_levels.length) & (chr_levels[b] < min)) {\n                    b += 1\n                }\n                var border_end = b\n\n                if (border_end > border_start + 1) {\n                    // console.log('border min', border_start, border_end)\n                    var adj = adjustToEvalue(this.mean, this.std, chr_rd, border_start, border_end, pval)\n                    // console.log(adj)\n                    if (adj) {\n                        var border_start, border_end = adj;\n                        segments.push([border_start, border_end + 1])\n                        flags.fill(\"D\", border_start, border_end)\n                    }\n                }\n                border_start = b;\n                while ((b < chr_levels.length) & (chr_levels[b] > max)) { b += 1 }\n                border_end = b\n\n                if (border_end > border_start + 1) {\n                    adj = adjustToEvalue(this.mean, this.std, chr_rd, border_start, border_end, pval)\n                    // console.log(adj)\n                    if (adj) {\n                        border_start, (border_end = adj);\n                        segments.push([border_start, border_end, +1]);\n                        // flags[bs:be] = [\"A\"] * (be - bs)\n                        flags.fill(\"A\", border_start, border_end);\n                    }\n                }\n                if (b == b0) b += 1;\n            }\n\n            //console.log(chr, 'segments', segments)\n            //\n            //  Calling additional deletions\n            //\n            b = 0;\n            while (b < chr_levels.length) {\n                while ((b < chr_levels.length) & (flags[b] != \"\")) b += 1;\n                border_start = b;\n                while ((b < chr_levels.length) & (chr_levels[b] < min)) b += 1;\n                border_end = b;\n                if (border_end > border_start + 1) {\n                    if (gaussianEValue(this.mean, this.std, chr_rd, border_start, border_end) < 0.05 / normal_genome_size) {\n                        segments.push([border_start, border_end, -1])\n                        flags.fill([\"d\"] * (border_end - border_start), border_start, border_end)\n                    }\n                    b -= 1;\n                }\n                b += 1;\n            }\n\n            b = 0;\n            var cf;\n            if (b < chr_levels.length) cf = flags[b];\n\n            border_start = 0;\n\n            //var merge = [...this.rd]\n            var merge = [...chr_rd]\n            // console.log('initial merge', merge)\n            while (b < chr_levels.length) {\n                while (flags[b] == cf) {\n                    b += 1;\n                    if (b >= flags.length) break;\n                }\n                if (b > border_start) {\n                    var merge_arr = new DataStat(merge.slice(border_start, b));\n                    merge.fill(merge_arr.mean, border_start, b);\n                }\n                if (b < chr_levels.length) cf = flags[b];\n                border_start = b;\n            }\n\n            merged_level[chr] = merge\n\n\n            //\n            // calculate calls\n            // \n            b = 0\n            while (b < chr_levels.length) {\n                cf = flags[b]\n                if (cf == \"\") {\n                    b += 1\n                    continue\n                }\n                border_start = b\n                while (b < chr_levels.length & cf == flags[b]) { b += 1 }\n                var border_arr = new DataStat(merge.slice(border_start, b))\n                let cnv = border_arr.mean / this.mean\n                let event_type;\n                if (cf == \"D\") {\n                    event_type = \"deletion\"\n                } else {\n                    event_type = \"duplication\"\n                }\n                let cnv_dict = {\n                    chr: chr,\n                    start: bin_size * border_start + 1,\n                    end: bin_size * b,\n                    size: bin_size * (b - border_start + 1),\n                    value: cnv * 2,\n                    event_type: event_type\n                }\n                cnv_levels.push(cnv_dict)\n\n            }\n        });\n\n        return [merged_level, cnv_levels]\n    }\n}\n\n\n\nexport default { Partition };","import g_utils from './GeneralUtil.js'\nimport combined_caller from './CombinedCaller.js';\nimport read_depth_caller from './MeanShiftUtil.js'\n\n\nfunction getMean(data) {\n    return (data.reduce(function (a, b) { return a + b; }) / data.length);\n}\n\nclass CNVpytorVCF {\n    constructor(allVariants, binSize) {\n        this.allVariants = allVariants\n        this.rowBinSize = 10000\n        this.binSize = binSize\n        this.binFactor = binSize / this.rowBinSize\n\n    }\n\n    async computeDepthFeatures() {\n\n        const chromosomes = Object.keys(this.allVariants)\n        const wigFeatures = []\n\n        for (let chr of chromosomes) {\n            const variants = this.allVariants[chr]\n            if (variants.length === 0) continue\n\n            const firstSnp = variants[0]\n\n            let sum = 0\n            let count = 0\n            let binStart = firstSnp.start = firstSnp.start % this.binSize   // Place start at integer multiple of binSize\n            let binEnd = binStart + this.binSize\n            let featureBin = 0\n\n            for (let snp of variants) {\n                const position = snp.start + 1    // Convert from 0-base to 1-base coords\n                featureBin = Math.max(Math.floor((snp.start - 1) / this.binSize), 0)\n                if (position > binEnd) {\n\n                    if (count > 0) {\n                        wigFeatures.push({ chr, start: binStart, end: binEnd, value: sum, bin: featureBin, count: count })\n                    }\n\n                    // Start new bin\n                    sum = 0\n                    //count = 0\n                    binStart = snp.start - snp.start % this.binSize\n                    binEnd = binStart + this.binSize\n                }\n\n                const dpValue = snp.calls[9].info[\"DP\"]\n                // const dpValue = snp.getInfo(\"DP\")\n\n                if (dpValue) {\n                    sum += Number.parseInt(dpValue)\n                    count++\n                }\n            }\n\n            // final bin\n            if (count > 0) {\n                wigFeatures.push({ chr, start: binStart, end: binEnd, value: sum, bin: featureBin, count: count })\n            }\n        }\n\n        return wigFeatures\n    }\n\n    // for for read depth calculation\n    async computeReadDepth() {\n        const chromosomes = Object.keys(this.allVariants)\n        var wigFeatures = {}\n\n        for (let chr of chromosomes) {\n            const variants = this.allVariants[chr]\n            var featureBin;\n            if (variants.length === 0) continue\n            for (let snp of variants) {\n                featureBin = Math.max(Math.floor(snp.start / this.rowBinSize), 0)\n                if (!wigFeatures[chr]) { wigFeatures[chr] = [] }\n                if (!wigFeatures[chr][featureBin]) {\n\n                    wigFeatures[chr][featureBin] = {\n                        chr,\n                        start: featureBin * this.rowBinSize,\n                        end: (featureBin + 1) * this.rowBinSize,\n                        value: 0,\n                        sum_score: 0,\n                        count: 0,\n                    };\n                }\n                const dpValue = snp.calls[9].info[\"DP\"]\n                if (dpValue) {\n                    // sum += Number.parseInt(dpValue)\n                    wigFeatures[chr][featureBin].sum_score += Number.parseInt(dpValue)\n                    wigFeatures[chr][featureBin].count++\n                }\n\n            }\n            // for last bin\n            //let last_bin = wigFeatures[chr][featureBin]\n            //last_bin.value = parseInt(last_bin.sum_score / last_bin.count) * 100\n        }\n\n        // adjust the bin values to actual bin size\n        var avgbin = {}\n        for (let chr of chromosomes) {\n            if (!avgbin[chr]) { avgbin[chr] = [] }\n            for (let k = 0; k < wigFeatures[chr].length / this.binFactor; k++) {\n                const featureBin = k\n                if (!avgbin[chr][k]) {\n                    avgbin[chr][k] = {\n                        chr,\n                        binScore: 0,\n                        start: featureBin * this.binSize,\n                        end: (featureBin + 1) * this.binSize,\n                    }\n                }\n\n                for (var j = k * 10; j < 10 * k + 10; j++) {\n                    if (wigFeatures[chr][j]) {\n                        var tmp_score = parseInt(wigFeatures[chr][j].sum_score / wigFeatures[chr][j].count) * 100;\n                        avgbin[chr][k].binScore += tmp_score;\n                    }\n                }\n            }\n        }\n\n        var finalFeatureSet = this.readDepthMeanshift(avgbin)\n        return finalFeatureSet\n\n    }\n    readDepthMeanshift(wigFeatures) {\n\n        // Get global mean and standrad deviation\n        var fit_info = new g_utils.GetFit(wigFeatures)\n        var [globamMean, globalStd] = fit_info.fit_data();\n\n        // Apply partition method\n        var partition = new read_depth_caller.Partition(wigFeatures, globamMean, globalStd);\n        var partition_array = partition.meanShiftCaller()\n        var caller_array = partition.cnv_calling()\n\n        // Assign the partition values to each bin\n        Object.entries(wigFeatures).forEach(([chr, chr_rd]) => {\n            chr_rd.forEach((bin, index) => {\n                bin.partition_level = parseInt(partition_array[chr][index])\n                bin.partition_call = parseInt(caller_array[0][chr][index])\n            });\n        })\n\n        var rawbinScore = this.formatDataStructure(wigFeatures, 'binScore', globamMean)\n        var partition_levels = this.formatDataStructure(wigFeatures, 'partition_level', globamMean)\n        var partition_call = this.formatDataStructure(wigFeatures, 'partition_call', globamMean)\n\n        return [rawbinScore, partition_levels, partition_call, caller_array[1]]\n\n    }\n    formatDataStructure(wigFeatures, feature_column, scaling_factor = 1) {\n        const results = []\n        for (const [chr, wig] of Object.entries(wigFeatures)) {\n\n            wig.forEach(sample => {\n                var new_sample = { ...sample }\n                if (scaling_factor != 1) {\n                    new_sample.value = sample[feature_column] / scaling_factor * 2\n                }\n                results.push(new_sample)\n            })\n        }\n\n        return results\n    }\n\n    async computeBAF_v2() {\n\n        const chromosomes = Object.keys(this.allVariants)\n        const wigFeatures = {}\n        const baf1 = [], baf2 = []\n\n        for (let chr of chromosomes) {\n            const variants = this.allVariants[chr]\n            if (variants.length === 0) continue\n            var featureBin;\n            for (let snp of variants) {\n                featureBin = Math.max(Math.floor(snp.start / this.binSize), 0)\n\n                if (!wigFeatures[chr]) {\n                    wigFeatures[chr] = []\n                }\n                if (!wigFeatures[chr][featureBin]) {\n                    if (featureBin > 0) {\n                        // calculating the BAF likelihood for previous bin\n                        let previous_featureBin = featureBin - 1\n                        if (wigFeatures[chr][previous_featureBin]) {\n\n                            const updated_bin = this.get_max_min_score(wigFeatures[chr][previous_featureBin])\n\n                            if (updated_bin.value != 0.5) {\n                                let baf_wig = Object.assign({}, updated_bin);\n                                baf_wig.value = -2 * (1 - updated_bin.value)\n                                baf2.push(baf_wig)\n                            }\n                            updated_bin.value = - 2 * updated_bin.value\n                            wigFeatures[chr][previous_featureBin] = updated_bin\n\n                            baf1.push(wigFeatures[chr][previous_featureBin])\n\n                        }\n                    }\n                    wigFeatures[chr][featureBin] = {\n                        chr,\n                        start: featureBin * this.binSize,\n                        end: (featureBin + 1) * this.binSize,\n                        value: 0,\n                        count: 0,\n                        likelihood_score: [],\n                        min_score: 0,\n                    };\n                }\n                const calls = snp.calls[9]\n                let genotype = calls.genotype\n                let ad_score = calls.info[\"AD\"].split(',')\n                let ad_a = ad_score[0], ad_b = ad_score[1]\n\n                if ((genotype[0] == 0 && genotype[1] == 1) || (genotype[0] == 1 && genotype[1] == 0)) {\n                    //apply the beta function\n                    if (wigFeatures[chr][featureBin].likelihood_score.length == 0) {\n                        wigFeatures[chr][featureBin].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {\n                            return beta(ad_a, ad_b, value);\n                        });\n                    } else {\n                        var sum = 0;\n\n                        wigFeatures[chr][featureBin].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {\n                            var likelihood_value = wigFeatures[chr][featureBin].likelihood_score[index] * beta(ad_a, ad_b, value);\n                            sum = sum + likelihood_value;\n                            return likelihood_value;\n                        });\n\n                        wigFeatures[chr][featureBin].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {\n                            return wigFeatures[chr][featureBin].likelihood_score[index] / sum;\n                        });\n                    }\n                    wigFeatures[chr][featureBin].count++;\n                }\n            }\n\n            // last feature bin\n            const updated_bin = this.get_max_min_score(wigFeatures[chr][featureBin])\n\n            if (updated_bin.value != 0.5) {\n                let baf_wig = Object.assign({}, updated_bin);\n                baf_wig.value = -2 * (1 - updated_bin.value)\n                baf2.push(baf_wig)\n            }\n            updated_bin.value = -2 * updated_bin.value\n            wigFeatures[chr][featureBin] = updated_bin\n            baf1.push(wigFeatures[chr][featureBin])\n        }\n\n        return [baf1, baf2]\n\n    }\n\n\n    format_BAF_likelihood(wigFeatures) {\n        const results = []\n\n        for (const [chr, wig] of Object.entries(wigFeatures)) {\n            wig.forEach(sample => {\n                var new_sample = { ...sample }\n                if (sample.value != 0.5) {\n                    new_sample.value = 1 - sample.value\n                    results.push(new_sample)\n                }\n            })\n        }\n        return results\n    }\n\n    get_max_min_score(sample) {\n\n        if (sample.likelihood_score.length > 0) {\n            const max = Math.max(...sample.likelihood_score);\n            const res = sample.likelihood_score.indexOf(max);\n            sample.value = Math.max(res / 100, 1 - res / 100);\n            sample.min_score = Math.min(res / 100, 1 - res / 100);\n\n        } else {\n            sample.score = 0;\n        }\n\n        return sample\n    }\n\n    async getAllbins() {\n        const bins = await this.computeDepthFeatures()\n\n        //console.log('getAllbins', bins[\"value\"])\n\n        const fitter = new g_utils.GetFit(bins)\n\n        const distParams = fitter.fit_data()\n        //  dconsole.log('rd list', distParams)\n\n        return bins\n    }\n\n    async read_rd_baf(caller='ReadDepth'){\n        \n        const chromosomes = Object.keys(this.allVariants)\n        var wigFeatures = {}\n\n        for (let chr of chromosomes) {\n            const variants = this.allVariants[chr]\n            var featureBin;\n            if (variants.length === 0) continue\n            for (let snp of variants) {\n                featureBin = Math.max(Math.floor(snp.start / this.rowBinSize), 0)\n                if (!wigFeatures[chr]) { wigFeatures[chr] = [] }\n                if (!wigFeatures[chr][featureBin]) {\n\n                    wigFeatures[chr][featureBin] = {\n                        chr,\n                        start: featureBin * this.rowBinSize,\n                        end: (featureBin + 1) * this.rowBinSize,\n                        // value: 0,\n                        dp_sum_score: 0,\n                        dp_count: 0,\n                        hets_count:0,\n                        hets: [],\n                        //likelihood_score: [],\n                    };\n                }\n                const calls = snp.calls[9]\n                const dpValue = calls.info[\"DP\"]\n                if (dpValue) {\n                    \n                    wigFeatures[chr][featureBin].dp_sum_score += Number.parseInt(dpValue)\n                    wigFeatures[chr][featureBin].dp_count++\n                }\n                \n                let ad_score = calls.info[\"AD\"].split(',')\n                let genotype = calls.genotype\n                if ((genotype[0] == 0 && genotype[1] == 1) || (genotype[0] == 1 && genotype[1] == 0)) {\n                    //apply the beta function\n                    wigFeatures[chr][featureBin].hets_count++;\n                    let ad_a = parseInt(ad_score[0]), ad_b = parseInt(ad_score[1])\n                    wigFeatures[chr][featureBin].hets.push({ref:ad_a, alt:ad_b})\n                }\n           \n            }\n        \n        }\n    \n        var avgbin = this.adjust_bin_size(wigFeatures)\n        var finalFeatureSet\n        if(caller == 'ReadDepth'){\n            finalFeatureSet = this.readDepthMeanshift(avgbin)\n            var baf = this.formatDataStructure_BAF(avgbin, 'max_likelihood')\n        }else if(caller=='2D'){\n            \n            let caller_obj = new combined_caller.CombinedCaller(avgbin,  this.binSize)        \n            let processed_bins = await caller_obj.call_2d()\n            \n            finalFeatureSet = [processed_bins.binScore, [], processed_bins.segment_score]\n    \n            var baf = caller_obj.formatDataStructure_BAF('max_likelihood')\n        }\n        \n\n        return [finalFeatureSet, baf]\n    }\n\n    formatDataStructure_BAF(wigFeatures, feature_column, scaling_factor = 2) {\n        const baf1 = []\n        const baf2 = []\n        for (const [chr, wig] of Object.entries(wigFeatures)) {\n\n            wig.forEach(sample => {\n                delete sample.likelihood_score;\n                var baf1_value = { ...sample }\n                var baf2_value = { ...sample }\n                \n                let value = sample[feature_column]\n                if (value != 0.5){\n                    baf2_value.value = -2 * (1 - value)\n                    baf2.push(baf2_value)\n                }\n                baf1_value.value = -2 * value\n                baf1.push(baf1_value)\n                    \n            })\n        }\n        \n\n        return [baf1, baf2]\n    }\n    \n    adjust_bin_size(wigFeatures){\n        const chromosomes = Object.keys(this.allVariants)\n        // adjust the bin values to actual bin size\n        var avgbin = {}\n        for (let chr of chromosomes) {\n            if (!avgbin[chr]) { avgbin[chr] = [] }\n            for (let k = 0; k < wigFeatures[chr].length / this.binFactor; k++) {\n                const featureBin = k\n                if (!avgbin[chr][k]) {\n                    avgbin[chr][k] = {\n                        chr,\n                        start: featureBin * this.binSize,\n                        end: (featureBin + 1) * this.binSize,\n                        dp_count: 0,\n                        hets_count: 0,\n                        binScore: 0,\n                        likelihood_score: [],\n                    }\n                }\n\n                for (var j = k * 10; j < 10 * k + 10; j++) {\n                   \n                    if (wigFeatures[chr][j]) {\n                        var tmp_score = parseInt(wigFeatures[chr][j].dp_sum_score / wigFeatures[chr][j].dp_count) * 100;\n                        avgbin[chr][k].binScore += tmp_score;\n                        avgbin[chr][k].dp_count += wigFeatures[chr][j].dp_count\n                        avgbin[chr][k].hets_count += wigFeatures[chr][j].hets_count\n\n                        if (wigFeatures[chr][j].hets.length != 0){\n                        \n                            \n                            wigFeatures[chr][j].hets.forEach((hets, hets_idx) => {\n                                if(avgbin[chr][k].likelihood_score.length == 0){\n                                    avgbin[chr][k].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {\n                                        return beta(hets.ref, hets.alt, value);\n                                    });\n                                }\n                                else{\n                                    var likelihood_sum = 0\n                                    avgbin[chr][k].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {\n                                        var likelihood_value = avgbin[chr][k].likelihood_score[index] * beta(hets.ref, hets.alt, value);\n                                        likelihood_sum += likelihood_value;\n                                        return likelihood_value;\n                                    });\n\n                                    avgbin[chr][k].likelihood_score = g_utils.linspace(0, 1, 100).map((value, index) => {\n                                        return avgbin[chr][k].likelihood_score[index] / likelihood_sum;\n                                    });\n                       \n                                }\n                            });\n                            \n                            // avgbin[chr][k].likelihood_score *= wigFeatures[chr][j].likelihood_score\n                        }\n                    }\n                }\n\n                const updated_bin = this.get_max_min_score(avgbin[chr][k])\n                avgbin[chr][k].max_likelihood = updated_bin.value\n            }\n        }\n        return avgbin\n    }\n\n}\n\nfunction beta(a, b, p, phased = true) {\n    return p ** a * (1 - p) ** b + p ** b * (1 - p) ** a;\n}\n\n\n\nexport { CNVpytorVCF }\n","/*\n* The MIT License (MIT)\n*\n* Copyright (c) 2016-2017 The Regents of the University of California\n* Author: Arijit Panda\n*\n* Permission is hereby granted, free of charge, to any person obtaining a copy\n* of this software and associated documentation files (the \"Software\"), to deal\n* in the Software without restriction, including without limitation the rights\n* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n* copies of the Software, and to permit persons to whom the Software is\n* furnished to do so, subject to the following conditions:\n*\n* The above copyright notice and this permission notice shall be included in\n* all copies or substantial portions of the Software.\n*\n*\n* THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n* THE SOFTWARE.\n*/\n\nimport TrackBase from \"../trackBase.js\"\nimport paintAxis from \"../util/paintAxis.js\"\nimport MenuUtils from \"../ui/menuUtils.js\"\nimport HDF5IndexedReader from \"./HDF5IndexedReader.js\"\nimport {CNVpytorVCF} from \"./cnvpytorVCF.js\"\nimport FeatureSource from '../feature/featureSource.js'\nimport $ from \"../vendor/jquery-3.3.1.slim.js\"\nimport {createCheckbox} from \"../igv-icons.js\"\nimport IGVGraphics from \"../igv-canvas.js\"\n\n\n/**\n * Represents 2 or more wig tracks overlaid on a common viewport.\n */\n\nconst DEFAULT_TRACK_HEIGHT = 250\nconst DEFAULT_BAF_TRACK_HEIGHT = 100\n\nclass CNVPytorTrack extends TrackBase {\n\n    constructor(config, browser) {\n        super(config, browser)\n        this.featureType = 'numeric'\n        this.paintAxis = paintAxis\n        \n        if (!config.max) {\n            this.defaultScale = true\n            this.autoscale = false\n        }\n\n        // Invoke height setter last to allocated to coverage and alignment tracks\n        this.height = (config.height !== undefined ? config.height : DEFAULT_TRACK_HEIGHT)\n    }\n\n    async init(config) {\n\n        this.type = \"cnvpytor\"\n        this.graphType = config.graphType || \"points\"\n        this.bin_size = config.bin_size || 100000\n        this.signal_name = config.signal_name || \"rd_snp\"\n        this.cnv_caller = config.cnv_caller || '2D'\n        this.colors = config.colors || ['gray', 'black', 'green', 'blue']\n        super.init(config)\n\n    }\n\n    get supportsWholeGenome() {\n        return true\n    }\n\n    get_signals() {\n        let signals = []\n\n        if (this.signal_name == 'rd_snp') {\n            signals = [\"RD_Raw\", \"RD_Raw_gc_coor\", this.cnv_caller, \"BAF1\", \"BAF2\"]\n\n        } else if (this.signal_name == 'rd') {\n            signals = [\"RD_Raw\", \"RD_Raw_gc_coor\", this.cnv_caller]\n\n        } else if (this.signal_name == 'snp') {\n            signals = [\"BAF1\", \"BAF2\"]\n\n        } else if (this.signal_name == 'cnh') {\n            signals = [this.cnv_caller]\n        }\n        return signals\n    }\n\n    get_signal_colors() {\n        \n        let signal_colors = [\n            { singal_name: 'RD_Raw', color: this.colors[0] },\n            { singal_name: 'RD_Raw_gc_coor', color: this.colors[1] },\n            { singal_name: 'ReadDepth', color: this.colors[2] },\n            { singal_name: '2D', color: this.colors[2] },\n            { singal_name: 'BAF1', color: this.colors[3] },\n            { singal_name: 'BAF2', color: this.colors[3] },\n        ]\n        return signal_colors\n    }\n\n    async postInit() {\n\n        if (this.config.format == 'vcf') {\n            this.featureSource = FeatureSource(this.config, this.browser.genome)\n            this.header = await this.getHeader()\n\n\n            var allVariants = this.featureSource.reader.features.reduce(function (r, a) {\n                r[a.chr] = r[a.chr] || []\n                r[a.chr].push(a)\n                return r\n            }, Object.create(null))\n\n            const cnvpytor_obj = new CNVpytorVCF(allVariants, this.bin_size)\n            \n            let wigFeatures;\n            let bafFeatures;\n            this.wigFeatures_obj = {}\n            this.wigFeatures_obj[this.bin_size] = {}\n\n            let dataWigs;\n            if(this.config.cnv_caller == '2D'){\n                \n                dataWigs = await cnvpytor_obj.read_rd_baf('2D')\n\n                wigFeatures = dataWigs[0]\n                bafFeatures = dataWigs[1]\n                this.wigFeatures_obj[this.bin_size]['2D'] = wigFeatures[2]\n\n                this.available_callers = ['2D']\n            }else{\n                dataWigs = await cnvpytor_obj.read_rd_baf()\n                wigFeatures = dataWigs[0]\n                bafFeatures = dataWigs[1]\n                this.wigFeatures_obj[this.bin_size]['ReadDepth'] = wigFeatures[2]\n                this.available_callers = ['ReadDepth']\n            }\n            \n            this.wigFeatures_obj[this.bin_size]['RD_Raw'] = wigFeatures[0]\n            this.wigFeatures_obj[this.bin_size]['RD_Raw_gc_coor'] = wigFeatures[1]\n            this.wigFeatures_obj[this.bin_size]['BAF1'] = bafFeatures[0]\n            this.wigFeatures_obj[this.bin_size]['BAF2'] = bafFeatures[1]\n            \n            this.available_bins = [this.bin_size]\n            \n            this.set_available_callers()\n\n        } else {\n            this.cnvpytor_obj =   new HDF5IndexedReader(this.config.url, this.bin_size)\n            this.wigFeatures_obj = await this.cnvpytor_obj.get_rd_signal(this.bin_size)\n            this.available_bins = this.cnvpytor_obj.available_bins\n            this.available_callers = this.cnvpytor_obj.callers\n            this.set_available_callers()\n        }\n\n        this.tracks = []\n        const p = []\n\n        this.signals = this.get_signals()\n        this.signal_colors = this.get_signal_colors()\n\n        for (let bin_size in this.wigFeatures_obj) {\n            let i = 0\n\n            for (const [signal_name, wig] of Object.entries(this.wigFeatures_obj[bin_size])) {\n\n                if (this.signals.includes(signal_name)) {\n                    let tconf = {}\n                    tconf.type = \"wig\"\n                    tconf.isMergedTrack = true\n                    tconf.features = wig\n                    tconf.name = signal_name\n                    tconf.color = this.signal_colors.filter(x => x.singal_name === signal_name).map(x => x.color)\n                    const t = await this.browser.createTrack(tconf)\n                    if (t) {\n                        t.autoscale = false     // Scaling done from merged track\n                        this.tracks.push(t)\n                    } else {\n                        console.warn(\"Could not create track \" + tconf)\n                    }\n\n                    if (typeof t.postInit === 'function') {\n                        p.push(t.postInit())\n                    }\n                    i++\n                }\n            }\n\n        }\n\n\n        this.flipAxis = this.config.flipAxis ? this.config.flipAxis : false\n        this.logScale = this.config.logScale ? this.config.logScale : false\n        this.autoscale = this.config.autoscale\n        if (!this.autoscale) {\n            this.dataRange = {\n                min: this.config.min || 0,\n                max: this.config.max\n            }\n        }\n        for (let t of this.tracks) {\n            t.autoscale = false\n            t.dataRange = this.dataRange\n        }\n\n        return Promise.all(p)\n    }\n\n    set_available_callers() {\n        if (!this.available_callers.includes(this.cnv_caller)) {\n            if (this.available_callers.length > 0) {\n                this.cnv_caller = this.available_callers[0]\n            } else {\n                this.cnv_caller = null\n            }\n        }\n    }\n\n    async getHeader() {\n\n        if (!this.header) {\n            if (typeof this.featureSource.getHeader === \"function\") {\n                const header = await this.featureSource.getHeader()\n                if (header) {\n                    this.callSets = header.callSets || []\n                }\n                this.header = header\n            }\n            this.sampleNames = this.callSets ? this.callSets.map(cs => cs.name) : []\n        }\n\n        return this.header\n    }\n\n    get height() {\n        return this._height\n    }\n\n    set height(h) {\n        this._height = h\n        if (this.tracks) {\n            for (let t of this.tracks) {\n                t.height = h\n                t.config.height = h\n            }\n        }\n    }\n\n    menuItemList() {\n        let items = []\n\n        if (this.flipAxis !== undefined) {\n            items.push({\n                label: \"Flip y-axis\",\n                click: () => {\n                    this.flipAxis = !this.flipAxis\n                    this.trackView.repaintViews()\n                }\n            })\n        }\n\n        items = items.concat(MenuUtils.numericDataMenuItems(this.trackView))\n\n        items.push('<hr/>')\n        items.push(\"Bin Sizes\")\n        for (let rd_bin of this.available_bins) {\n            const checkBox = createCheckbox(rd_bin, rd_bin === this.bin_size)\n            items.push({\n                object: $(checkBox),\n                click: async () => {\n                    this.bin_size = rd_bin\n\n                    await this.recreate_tracks(rd_bin)\n                    this.clearCachedFeatures()\n                    this.trackView.updateViews()\n                    this.trackView.repaintViews()\n                }\n            })\n        }\n        items.push('<hr/>')\n        items.push(\"Signal Type\")\n\n        let signal_dct = {\"rd_snp\": \"RD and BAF Likelihood\", \"rd\": \"RD Signal\", \"snp\": \"BAF Likelihood\"}\n        for (let signal_name in signal_dct) {\n            const checkBox = createCheckbox(signal_dct[signal_name], signal_name === this.signal_name)\n            items.push({\n                object: $(checkBox),\n                click: async () => {\n                    this.signal_name = signal_name\n                    await this.recreate_tracks(this.bin_size)\n                    this.clearCachedFeatures()\n                    this.trackView.updateViews()\n                    this.trackView.repaintViews()\n\n                }\n            })\n        }\n\n        // cnv caller setting\n        items.push('<hr/>')\n        items.push(\"CNV caller\")\n        for (let cnv_caller of this.available_callers) {\n            const checkBox = createCheckbox(cnv_caller, cnv_caller === this.cnv_caller)\n            items.push({\n                object: $(checkBox),\n                click: async () => {\n                    this.cnv_caller = cnv_caller\n                    await this.recreate_tracks(this.bin_size)\n                    this.clearCachedFeatures()\n                    this.trackView.updateViews()\n                    this.trackView.repaintViews()\n                }\n            })\n        }\n\n        return items\n    }\n\n    async recreate_tracks(bin_size) {\n        this.tracks = []\n        const p = []\n\n        if (!(bin_size in this.wigFeatures_obj)) {\n            this.wigFeatures_obj = {...this.wigFeatures_obj, ...await this.cnvpytor_obj.get_rd_signal(bin_size)}\n        }\n\n        this.signals = this.get_signals()\n        this.signal_colors = this.get_signal_colors()\n\n        let i = 0\n\n        for (const [signal_name, wig] of Object.entries(this.wigFeatures_obj[bin_size])) {\n            if (this.signals.includes(signal_name)) {\n                let tconf = {}\n                tconf.type = \"wig\"\n                tconf.isMergedTrack = true\n                tconf.features = wig\n                tconf.name = signal_name\n                tconf.color = this.signal_colors.filter(x => x.singal_name === signal_name).map(x => x.color) \n                const t = await this.browser.createTrack(tconf)\n                if (t) {\n                    t.autoscale = false     // Scaling done from merged track\n                    this.tracks.push(t)\n                } else {\n                    console.warn(\"Could not create track \" + tconf)\n                }\n\n                if (typeof t.postInit === 'function') {\n                    p.push(t.postInit())\n                }\n                i++\n            }\n\n        }\n\n\n        this.flipAxis = this.config.flipAxis ? this.config.flipAxis : false\n        this.logScale = this.config.logScale ? this.config.logScale : false\n        this.autoscale = this.config.autoscale\n        if (!this.autoscale) {\n            this.dataRange = {\n                min: this.config.min || 0,\n                max: this.config.max\n            }\n        }\n        for (let t of this.tracks) {\n            t.autoscale = false\n            t.dataRange = this.dataRange\n        }\n        return Promise.all(p)\n    }\n\n    async getFeatures(chr, bpStart, bpEnd, bpPerPixel) {\n\n        if(this.tracks) {\n            const promises = this.tracks.map((t) => t.getFeatures(chr, bpStart, bpEnd, bpPerPixel))\n            return Promise.all(promises)\n        } else {\n            return undefined  // This can happen if a redraw is triggered before the track has initialized.\n        }\n    }\n\n    // TODO: refactor to igvUtils.js\n    getScaleFactor(min, max, height, logScale) {\n        const scale = logScale ? height / (Math.log10(max + 1) - (min <= 0 ? 0 : Math.log10(min + 1))) : height / (max - min)\n        return scale\n    }\n\n    computeYPixelValue(yValue, yScaleFactor) {\n        return (this.flipAxis ? (yValue - this.dataRange.min) : (this.dataRange.max - yValue)) * yScaleFactor\n    }\n\n    computeYPixelValueInLogScale(yValue, yScaleFactor) {\n        let maxValue = this.dataRange.max\n        let minValue = this.dataRange.min\n        if (maxValue <= 0) return 0 // TODO:\n        if (minValue <= -1) minValue = 0\n        minValue = (minValue <= 0) ? 0 : Math.log10(minValue + 1)\n        maxValue = Math.log10(maxValue + 1)\n        yValue = Math.log10(yValue + 1)\n        return ((this.flipAxis ? (yValue - minValue) : (maxValue - yValue)) * yScaleFactor)\n    }\n\n    draw(options) {\n\n        // const mergedFeatures = options.features    // Array of feature arrays, 1 for each track\n        const mergedFeatures = options.features\n        if(!mergedFeatures) return\n\n        if (this.defaultScale) {\n            if (this.signal_name == 'rd_snp') {\n                this.dataRange = {\n                    min: this.config.min || this.dataRange.min || -2,\n                    max: this.config.max || this.dataRange.max || 6\n                }\n            } else if (this.signal_name == 'rd') {\n                this.dataRange = {\n                    min: this.config.min || this.dataRange.min || 0,\n                    max: this.config.max || this.dataRange.max || 6\n                }\n            } else if (this.signal_name == 'snp') {\n                this.dataRange = {\n                    min: this.config.min || this.dataRange.min || -2,\n                    max: this.config.max || this.dataRange.max || 0\n                }\n            }\n        }\n\n        if (this.autoscale) {\n            this.dataRange = autoscale(options.referenceFrame.chr, mergedFeatures)\n        }\n\n        if(this.tracks) {\n            for (let i = 0, len = this.tracks.length; i < len; i++) {\n                const trackOptions = Object.assign({}, options)\n                trackOptions.features = mergedFeatures[i]\n                this.tracks[i].dataRange = this.dataRange\n                this.tracks[i].flipAxis = this.flipAxis\n                this.tracks[i].logScale = this.logScale\n                if (this.graphType) {\n                    this.tracks[i].graphType = this.graphType\n                }\n                this.tracks[i].draw(trackOptions)\n            }\n        }\n\n        // guides lines\n        const scaleFactor = this.getScaleFactor(this.dataRange.min, this.dataRange.max, options.pixelHeight, this.logScale)\n        const yScale = (yValue) => this.logScale\n            ? this.computeYPixelValueInLogScale(yValue, scaleFactor)\n            : this.computeYPixelValue(yValue, scaleFactor)\n\n         // Draw guidelines\n         if (this.config.hasOwnProperty('guideLines')) {\n            for (let line of this.config.guideLines) {\n                if (line.hasOwnProperty('color') && line.hasOwnProperty('y') && line.hasOwnProperty('dotted')) {\n                    let y = yScale(line.y)\n                    let props = {\n                        'strokeStyle': line['color'],\n                        'strokeWidth': 1\n                    }\n                    if (line['dotted']) IGVGraphics.dashedLine(options.context, 0, y, options.pixelWidth, y, 5, props)\n                    else IGVGraphics.strokeLine(options.context, 0, y, options.pixelWidth, y, props)\n                }\n            }\n        }\n    }\n\n    popupData(clickState, features) {\n\n        const featuresArray = features || clickState.viewport.cachedFeatures\n\n        if (featuresArray && featuresArray.length === this.tracks.length) {\n            // Array of feature arrays, 1 for each track\n            const popupData = []\n            for (let i = 0; i < this.tracks.length; i++) {\n                if (i > 0) popupData.push('<hr/>')\n                popupData.push(`<div style=background-color:rgb(245,245,245);border-bottom-style:dashed;border-bottom-width:1px;padding-bottom:5px;padding-top:10px;font-weight:bold;font-size:larger >${this.tracks[i].name}</div>`)\n                const trackPopupData = this.tracks[i].popupData(clickState, featuresArray[i])\n                popupData.push(...trackPopupData)\n\n            }\n            return popupData\n        }\n    }\n\n}\n\nfunction autoscale(chr, featureArrays) {\n\n    let min = 0\n    let max = -Number.MAX_VALUE\n    for (let features of featureArrays) {\n        for (let f of features) {\n            if (typeof f.value !== 'undefined' && !Number.isNaN(f.value)) {\n                min = Math.min(min, f.value)\n                max = Math.max(max, f.value)\n            }\n        }\n    }\n    return {min: min, max: max}\n}\n\nexport default CNVPytorTrack\n","import FeatureTrack from \"./feature/featureTrack.js\"\nimport SequenceTrack from \"./sequenceTrack.js\"\nimport WigTrack from \"./feature/wigTrack.js\"\nimport SegTrack from \"./feature/segTrack.js\"\nimport MergedTrack from \"./feature/mergedTrack.js\"\nimport BAMTrack from \"./bam/bamTrack.js\"\nimport InteractionTrack from \"./feature/interactionTrack.js\"\nimport VariantTrack from \"./variant/variantTrack.js\"\nimport EqtlTrack from \"./gtex/eqtlTrack.js\"\nimport GWASTrack from \"./gwas/gwasTrack.js\"\nimport GCNVTrack from \"./gcnv/gcnvTrack.js\"\nimport RnaStructTrack from \"./rna/rnaStruct.js\"\nimport IdeogramTrack from \"./ideogramTrack.js\"\nimport SpliceJunctionTrack from \"./feature/spliceJunctionTrack.js\"\nimport BlatTrack from \"./blat/blatTrack.js\"\nimport CNVPytorTrack from \"./cnvpytor/cnvpytorTrack.js\"\n//import CNVPytorTrack from \"./CNVpytor/cnvpytorTrack.js\"\n\n\nconst trackFunctions =\n    new Map([\n        ['ideogram', (config, browser) => new IdeogramTrack(config, browser)],\n        ['sequence', (config, browser) => new SequenceTrack(config, browser)],\n        ['feature', (config, browser) => new FeatureTrack(config, browser)],\n        ['seg', (config, browser) => new SegTrack(config, browser)],\n        ['mut', (config, browser) => new SegTrack(config, browser)],\n        ['maf', (config, browser) => new SegTrack(config, browser)],\n        ['wig', (config, browser) => new WigTrack(config, browser)],\n        ['merged', (config, browser) => new MergedTrack(config, browser)],\n        ['alignment', (config, browser) => new BAMTrack(config, browser)],\n        ['interaction', (config, browser) => new InteractionTrack(config, browser)],\n        ['interact', (config, browser) => new InteractionTrack(config, browser)],\n        ['variant', (config, browser) => new VariantTrack(config, browser)],\n        ['eqtl', (config, browser) => new EqtlTrack(config, browser)],\n        ['gwas', (config, browser) => new GWASTrack(config, browser)],\n        ['arc', (config, browser) => new RnaStructTrack(config, browser)],\n        ['gcnv', (config, browser) => new GCNVTrack(config, browser)],\n        ['junction', (config, browser) => new SpliceJunctionTrack(config, browser)],\n        ['blat', (config, browser) => new BlatTrack(config, browser)],\n        ['cnvpytor', (config, browser) => new CNVPytorTrack(config, browser)]\n    ])\n\n\n/**\n * Add a track constructor  the the factory lookup table.\n *\n * @param type\n * @param track\n */\nconst addTrackCreatorFunction = function (type, track) {\n    trackFunctions.set(type, track)\n}\n\nconst getTrack = function (type, config, browser) {\n\n    let trackKey\n    switch (type) {\n        case \"annotation\":\n        case \"genes\":\n        case \"fusionjuncspan\":\n        case \"snp\":\n            trackKey = \"feature\"\n            break\n        case 'seg':\n        case 'maf':\n        case 'mut':\n            trackKey = 'seg'\n            break\n        case 'junctions':\n        case 'splicejunctions':\n            trackKey = 'junction'\n            break\n        default:\n            trackKey = type\n    }\n\n    return trackFunctions.has(trackKey) ?\n        trackFunctions.get(trackKey)(config, browser) :\n        undefined\n}\n\nexport default {\n    tracks: trackFunctions,\n    addTrack: addTrackCreatorFunction,\n    trackFunctions,\n    addTrackCreatorFunction,\n    getTrack\n}\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\n\n/**\n * Minimal support for the legacy IGV desktop session format.\n */\n\nclass XMLSession {\n\n    constructor(xmlString, knownGenomes) {\n\n        const parser = new DOMParser()\n        const xmlDoc = parser.parseFromString(xmlString, \"text/xml\")\n\n        this.processRootNode(xmlDoc, knownGenomes)\n\n        const resourceElements = xmlDoc.getElementsByTagName(\"Resource\")\n        const trackElements = xmlDoc.getElementsByTagName(\"Track\")\n        const hasTrackElements = trackElements && trackElements.length > 0\n\n        const tracks = []\n        this.tracks = tracks\n\n        const resourceMap = new Map()\n        Array.from(resourceElements).forEach(function (r, idx) {\n            var config = {\n                url: r.getAttribute(\"path\"),\n                indexURL: r.getAttribute(\"index\"),\n                order: idx\n            }\n            resourceMap.set(config.url, config)\n            if (!hasTrackElements) {\n                tracks.push(config)\n            }\n        })\n\n        // Check for optional Track section\n        if (hasTrackElements) {\n\n            Array.from(trackElements).forEach(function (track) {\n\n                const subtracks = track.getElementsByTagName(\"Track\")\n\n                if (subtracks && subtracks.length > 0) {\n\n                    const mergedTrack = {\n                        type: 'merged',\n                        tracks: []\n                    }\n                    extractTrackAttributes(track, mergedTrack)\n\n                    tracks.push(mergedTrack)\n\n                    Array.from(subtracks).forEach(function (t) {\n                        t.processed = true\n                        const id = t.getAttribute(\"id\")\n                        const config = resourceMap.get(id)\n                        if (config) {\n                            mergedTrack.tracks.push(config)\n                            extractTrackAttributes(t, config)\n                            config.autoscale = false\n                            mergedTrack.height = config.height\n\n                            // Add alpha for merged track colors.  Alpha is not recorded by IGV desktop in XML session\n                            //const color = t.getAttribute(\"color\");\n                            //if (color) {\n                            //    config.color = \"rgba(\" + color + \",0.5)\";\n                            //}\n                        }\n                    })\n                } else if (!track.processed) {\n\n                    const id = track.getAttribute(\"id\")\n                    const res = resourceMap.get(id)\n                    if (res) {\n                        tracks.push(res)\n                        extractTrackAttributes(track, res)\n                    }\n\n                }\n            })\n        }\n    }\n\n    processRootNode(xmlDoc, knownGenomes) {\n\n        const elements = xmlDoc.getElementsByTagName(\"Session\")\n        if (!elements || elements.length === 0) {\n            //TODO throw error\n        }\n        const session = elements.item(0)\n        const genome = session.getAttribute(\"genome\")\n        const locus = session.getAttribute(\"locus\")\n        const ucscID = session.getAttribute(\"ucscID\")\n\n        if (knownGenomes && knownGenomes.hasOwnProperty(genome)) {\n            this.genome = genome\n\n        } else {\n            this.reference = {\n                fastaURL: genome\n            }\n            if (ucscID) {\n                this.reference.id = ucscID\n            }\n        }\n        if (locus) {\n            this.locus = locus\n        }\n    }\n\n}\n\n\nfunction extractTrackAttributes(track, config) {\n\n\n    config.name = track.getAttribute(\"name\")\n\n    const color = track.getAttribute(\"color\")\n    if (color) {\n        config.color = \"rgb(\" + color + \")\"\n    }\n\n    const altColor = track.getAttribute(\"altColor\")\n    if (color) {\n        config.altColor = \"rgb(\" + altColor + \")\"\n    }\n\n    const height = track.getAttribute(\"height\")\n    if (height) {\n        config.height = parseInt(height)\n    }\n\n    const autoScale = track.getAttribute(\"autoScale\")\n    if (autoScale) {\n        config.autoscale = (autoScale === \"true\")\n    }\n\n    const autoscaleGroup = track.getAttribute(\"autoscaleGroup\")\n    if (autoscaleGroup) {\n        config.autoscaleGroup = autoscaleGroup\n    }\n\n    const windowFunction = track.getAttribute(\"windowFunction\")\n    if (windowFunction) {\n        config.windowFunction = windowFunction\n    }\n    const visWindow = track.getAttribute(\"visibilityWindow\") || track.getAttribute(\"featureVisibilityWindow\")\n    if (visWindow) {\n        config.visibilityWindow = visWindow\n    }\n\n    const indexed = track.getAttribute(\"indexed\")\n    if (indexed) {\n        config.indexed = (indexed === \"true\")\n    }\n\n    const normalize = track.getAttribute(\"normalize\")\n    if (normalize) {\n        config.normalize = normalize === \"true\"\n    }\n\n    const dataRangeCltn = track.getElementsByTagName(\"DataRange\")\n    if (dataRangeCltn.length > 0) {\n        const dataRange = dataRangeCltn.item(0)\n        config.min = Number(dataRange.getAttribute(\"minimum\"))\n        config.max = Number(dataRange.getAttribute(\"maximum\"))\n        config.logScale = dataRange.getAttribute(\"type\") === \"LOG\"\n    }\n}\n\nexport default XMLSession\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014-2015 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {igvxhr, StringUtils} from \"../node_modules/igv-utils/src/index.js\"\nimport {buildOptions} from \"./util/igvUtils.js\"\n\nconst splitLines = StringUtils.splitLines\n\nclass SampleInformation {\n    constructor() {\n        this.attributes = {}\n        this.plinkLoaded = false\n    }\n\n    async loadPlinkFile(url, config) {\n\n        if (!config) config = {}\n\n        var options = buildOptions(config)    // Add oauth token, if any\n        const data = await igvxhr.loadString(url, options)\n        var lines = splitLines(data)\n\n        for (let line of lines) {\n            var line_arr = line.split(' ')\n            this.attributes[line_arr[1]] = {\n                familyId: line_arr[0],\n                fatherId: line_arr[2],\n                motherId: line_arr[3],\n                sex: line_arr[4],\n                phenotype: line_arr[5]\n            }\n        }\n        this.plinkLoaded = true\n        return this\n    }\n\n    /**\n     * Return the attributes for the given sample as a map-like object (key-value pairs)\n     * @param sample\n     */\n    getAttributes(sample) {\n        return this.attributes[sample]\n    };\n\n    getAttributeNames() {\n\n        if (this.hasAttributes()) {\n            return Object.keys(this.attributes[Object.keys(this.attributes)[0]])\n        } else return []\n    };\n\n    hasAttributes() {\n        return Object.keys(this.attributes).length > 0\n    }\n}\n\nfunction loadPlinkFile(url, config) {\n    const si = new SampleInformation()\n    return si.loadPlinkFile(url, config)\n}\n\nexport default loadPlinkFile\n\n\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nclass GtexSelection {\n\n    constructor(gene, snp) {\n        this.geneColors = {}\n        this.gene = null\n        this.snp = null\n        this.genesCount = 0\n\n        if (gene) {\n            this.gene = gene.toUpperCase()\n            this.geneColors[this.gene] = brewer[this.genesCount++]\n\n        }\n        if (snp) {\n            this.snp = snp.toUpperCase()\n        }\n    }\n\n    addGene(geneName) {\n        if (!this.geneColors[geneName.toUpperCase()]) {\n            this.geneColors[geneName.toUpperCase()] = brewer[this.genesCount++]\n        }\n    }\n\n    colorForGene(geneName) {\n        return this.geneColors[geneName.toUpperCase()]\n    }\n}\n\nvar brewer = []\n// Set +!\nbrewer.push(\"rgb(228,26,28)\")\nbrewer.push(\"rgb(55,126,184)\")\nbrewer.push(\"rgb(77,175,74)\")\nbrewer.push(\"rgb(166,86,40)\")\nbrewer.push(\"rgb(152,78,163)\")\nbrewer.push(\"rgb(255,127,0)\")\nbrewer.push(\"rgb(247,129,191)\")\nbrewer.push(\"rgb(153,153,153)\")\nbrewer.push(\"rgb(255,255,51)\")\n\n// #Set 2\nbrewer.push(\"rgb(102, 194, 165\")\nbrewer.push(\"rgb(252, 141, 98\")\nbrewer.push(\"rgb(141, 160, 203\")\nbrewer.push(\"rgb(231, 138, 195\")\nbrewer.push(\"rgb(166, 216, 84\")\nbrewer.push(\"rgb(255, 217, 47\")\nbrewer.push(\"rgb(229, 196, 148\")\nbrewer.push(\"rgb(179, 179, 179\")\n\n//#Set 3\nbrewer.push(\"rgb( 141, 211, 199\")\nbrewer.push(\"rgb(255, 255, 179\")\nbrewer.push(\"rgb(190, 186, 218\")\nbrewer.push(\"rgb(251, 128, 114\")\nbrewer.push(\"rgb(128, 177, 211\")\nbrewer.push(\"rgb(253, 180, 98\")\nbrewer.push(\"rgb(179, 222, 105\")\nbrewer.push(\"rgb(252, 205, 229\")\nbrewer.push(\"rgb(217, 217, 217\")\nbrewer.push(\"rgb(188, 128, 189\")\nbrewer.push(\"rgb(204, 235, 197\")\nbrewer.push(\"rgb(255, 237, 111\")\n\n\nexport default GtexSelection\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {StringUtils} from \"../node_modules/igv-utils/src/index.js\"\nimport {DOMUtils} from \"../node_modules/igv-ui/dist/igv-ui.js\"\nimport {prettyBasePairNumber, validateGenomicExtent} from \"./util/igvUtils.js\"\nimport GtexSelection from \"./gtex/gtexSelection.js\"\n\n// Reference frame classes.  Converts domain coordinates (usually genomic) to pixel coordinates\n\nclass ReferenceFrame {\n\n    constructor(genome, chr, start, end, bpPerPixel) {\n        this.genome = genome\n        this.chr = chr\n\n        this.start = start\n\n        // TODO WARNING THIS IS NOT UPDATED !!!\n        this.end = end\n\n        this.bpPerPixel = bpPerPixel\n        this.id = DOMUtils.guid()\n    }\n\n    /**\n     * Extend this frame to accomodate the given locus.  Used th CircularView methods to merge 2 frames.\n     * @param locus\n     */\n    extend(locus) {\n        const newStart = Math.min(locus.start, this.start)\n        const newEnd = Math.max(locus.end, this.end)\n        const ratio = (newEnd - newStart) / (this.end - this.start)\n        this.start = newStart\n        this.end = newEnd\n        this.bpPerPixel *= ratio\n    }\n\n    calculateEnd(pixels) {\n        return this.start + this.bpPerPixel * pixels\n    }\n\n    calculateBPP(end, pixels) {\n        return (end - this.start) / pixels\n    }\n\n    set(json) {\n        this.chr = json.chr\n        this.start = json.start\n        this.bpPerPixel = json.bpPerPixel\n    }\n\n    toPixels(bp) {\n        return bp / this.bpPerPixel\n    }\n\n    toBP(pixels) {\n        return this.bpPerPixel * pixels\n    }\n\n    /**\n     * Shift frame by stated pixels.  Return true if view changed, false if not.\n     *\n     * @param pixels\n     * @param clamp -- if true \"clamp\" shift to prevent panning off edge of chromosome.  This is disabled if \"show soft clipping\" is on\n     * @param viewportWidth\n     */\n    shiftPixels(pixels, viewportWidth, clamp) {\n\n        const currentStart = this.start\n        const deltaBP = pixels * this.bpPerPixel\n\n        this.start += deltaBP\n\n        if(clamp) {\n            this.clampStart(viewportWidth)\n        }\n\n        this.end = this.start + viewportWidth * this.bpPerPixel\n\n        return currentStart !== this.start\n    }\n\n    clampStart(viewportWidth) {\n        // clamp left\n        const min = (this.genome.getChromosome(this.chr).bpStart || 0)\n        this.start = Math.max(min, this.start)\n\n        // clamp right\n        if (viewportWidth) {\n\n            const {bpLength} = this.genome.getChromosome(this.chr)\n            const maxStart = bpLength - (viewportWidth * this.bpPerPixel)\n\n            if (this.start > maxStart) {\n                this.start = maxStart\n            }\n        }\n    }\n\n    async zoomWithScaleFactor(browser, scaleFactor, viewportWidth, centerBPOrUndefined) {\n\n        const centerBP = undefined === centerBPOrUndefined ? (this.start + this.toBP(viewportWidth / 2.0)) : centerBPOrUndefined\n\n        // save initial start and bpp\n        const {start, bpPerPixel} = this.start\n\n        const {bpLength} = this.getChromosome()\n        const bppThreshold = scaleFactor < 1.0 ? browser.minimumBases() / viewportWidth : bpLength / viewportWidth\n\n        // update bpp\n        if (scaleFactor < 1.0) {\n            this.bpPerPixel = Math.max(this.bpPerPixel * scaleFactor, bppThreshold)\n        } else {\n            this.bpPerPixel = Math.min(this.bpPerPixel * scaleFactor, bppThreshold)\n        }\n\n        // update start and end\n        const widthBP = this.bpPerPixel * viewportWidth\n        this.start = centerBP - 0.5 * widthBP\n        this.clampStart(viewportWidth)\n\n        this.end = this.start + widthBP\n\n        const viewChanged = start !== this.start || bpPerPixel !== this.bpPerPixel\n        if (viewChanged) {\n            await browser.updateViews(true)\n        }\n\n    }\n\n    getChromosome() {\n        return this.genome.getChromosome(this.chr)\n    }\n\n    getMultiLocusLabelBPLengthOnly(pixels) {\n        const margin = '&nbsp'\n        const space = '&nbsp &nbsp'\n        const ss = Math.floor(this.start) + 1\n        const ee = Math.round(this.start + this.bpPerPixel * pixels)\n        return `${margin}${this.chr}${margin}${prettyBasePairNumber(ee - ss)}${margin}`\n    }\n\n    getMultiLocusLabelLocusOnly(pixels) {\n        const margin = '&nbsp'\n        const {chr, start, end } = this.getPresentationLocusComponents(pixels)\n        return `${margin}${chr}:${start}-${end}${margin}`\n    }\n\n    getMultiLocusLabel(pixels) {\n        const margin = '&nbsp'\n        const space = '&nbsp &nbsp'\n        const {chr, start, end } = this.getPresentationLocusComponents(pixels)\n        const ss = Math.floor(this.start) + 1\n        const ee = Math.round(this.start + this.bpPerPixel * pixels)\n        return `${margin}${chr}:${start}-${end}${margin}${margin}(${prettyBasePairNumber(ee - ss)})${margin}`\n    }\n\n    getPresentationLocusComponents(pixels) {\n\n        if ('all' === this.chr) {\n            return {chr: this.chr}\n        } else {\n            const ss = StringUtils.numberFormatter(Math.floor(this.start) + 1)\n            const ee = StringUtils.numberFormatter(Math.round(this.start + this.bpPerPixel * pixels))\n\n            return {chr: this.chr, start: ss, end: ee}\n        }\n\n    }\n\n    getLocusString() {\n        if ('all' === this.chr) {\n            return 'all'\n        } else {\n            const ss = StringUtils.numberFormatter(Math.floor(this.start) + 1)\n            const ee = StringUtils.numberFormatter(Math.round(this.end))\n            return `${this.chr}:${ss}-${ee}`\n        }\n    }\n\n    description(blurb) {\n        console.log(` ${blurb || ''} referenceFrame - ${this.chr} bpp ${this.bpPerPixel.toFixed(3)} start ${StringUtils.numberFormatter(Math.round(this.start))} end ${StringUtils.numberFormatter(Math.round(this.end))} `)\n    }\n}\n\nfunction createReferenceFrameList(loci, genome, browserFlanking, minimumBases, viewportWidth, isSoftclipped) {\n\n    return loci.map(locus => {\n\n        // If a flanking region is defined, and the search object is a symbol (\"gene\") type, adjust start and end\n        if (browserFlanking && locus.gene) {\n            locus.start = Math.max(0, locus.start - browserFlanking)\n            locus.end += browserFlanking\n        }\n\n        // Validate the range.  This potentionally modifies start & end of locus.\n        if(!isSoftclipped) {\n            const chromosome = genome.getChromosome(locus.chr)\n            validateGenomicExtent(chromosome.bpLength, locus, minimumBases)\n        }\n\n        const referenceFrame = new ReferenceFrame(genome,\n            locus.chr,\n            locus.start,\n            locus.end,\n            (locus.end - locus.start) / viewportWidth)\n\n        referenceFrame.locusSearchString = locus.locusSearchString\n\n        // GTEX hack\n        if (locus.gene || locus.snp) {\n            referenceFrame.selection = new GtexSelection(locus.gene, locus.snp)\n        }\n\n        return referenceFrame\n    })\n}\n\nfunction adjustReferenceFrame(scaleFactor, referenceFrame, viewportWidth, alignmentStart, alignmentLength) {\n\n    referenceFrame.bpPerPixel *= scaleFactor\n\n    const alignmentEE = alignmentStart + alignmentLength\n    const alignmentCC = (alignmentStart + alignmentEE) / 2\n\n    referenceFrame.start = alignmentCC - (referenceFrame.bpPerPixel * (viewportWidth / 2))\n    referenceFrame.end = referenceFrame.start + (referenceFrame.bpPerPixel * viewportWidth)\n    referenceFrame.locusSearchString = referenceFrame.getLocusString()\n}\n\nfunction createReferenceFrameWithAlignment(genome, chromosomeName, bpp, viewportWidth, alignmentStart, alignmentLength) {\n\n    const alignmentEE = alignmentStart + alignmentLength\n    const alignmentCC = (alignmentStart + alignmentEE) / 2\n\n    const ss = alignmentCC - (bpp * (viewportWidth / 2))\n    const ee = ss + (bpp * viewportWidth)\n\n    return new ReferenceFrame(genome, chromosomeName, ss, ee, bpp)\n\n}\n\nexport {createReferenceFrameList, adjustReferenceFrame, createReferenceFrameWithAlignment}\nexport default ReferenceFrame\n","import {igvxhr, StringUtils} from \"../node_modules/igv-utils/src/index.js\"\n\n\nconst DEFAULT_SEARCH_CONFIG = {\n    timeout: 5000,\n    type: \"plain\",   // Legacy plain text support -- deprecated\n    url: 'https://igv.org/genomes/locus.php?genome=$GENOME$&name=$FEATURE$',\n    coords: 0,\n    chromosomeField: \"chromosome\",\n    startField: \"start\",\n    endField: \"end\",\n    geneField: \"gene\",\n    snpField: \"snp\"\n}\n\n/**\n * Return an object representing the locus of the given string.  Object is of the form\n * {\n *   chr,\n *   start,\n *   end,\n *   locusSearchString,\n *   gene,\n *   snp\n * }\n * @param browser\n * @param string\n * @returns {Promise<*>}\n */\nasync function search(browser, string) {\n\n    if (undefined === string || '' === string.trim()) {\n        return\n    }\n\n    if (string && string.trim().toLowerCase() === \"all\" || string === \"*\") {\n        string = \"all\"\n    }\n\n    const loci = string.split(' ')\n\n    let searchConfig = browser.searchConfig || DEFAULT_SEARCH_CONFIG\n    let list = []\n\n    const searchLocus = async (locus) => {\n        let locusObject = parseLocusString(browser, locus)\n\n        if (!locusObject) {\n            const feature = browser.genome.featureDB.get(locus.toUpperCase())\n            if (feature) {\n                locusObject = {\n                    chr: feature.chr,\n                    start: feature.start,\n                    end: feature.end,\n                    gene: feature.name,\n                    locusSearchString: string\n                }\n            }\n        }\n\n        if (!locusObject && (browser.config && false !== browser.config.search)) {\n            try {\n                locusObject = await searchWebService(browser, locus, searchConfig)\n            } catch (error) {\n                console.error(error)\n                throw Error(\"Search service currently unavailable.\")\n            }\n        }\n        return locusObject\n    }\n\n    for (let locus of loci) {\n        const locusObject = await searchLocus(locus)\n        if (locusObject) {\n            locusObject.locusSearchString = locus\n            list.push(locusObject)\n        }\n    }\n\n    // If nothing is found, consider possibility that loci name itself has spaces\n    if (list.length === 0) {\n        const locusObject = await searchLocus(string)\n        if (locusObject) {\n            locusObject.locusSearchString = string\n            list.push(locusObject)\n        }\n    }\n\n\n    return 0 === list.length ? undefined : list\n}\n\nfunction parseLocusString(browser, locus) {\n\n    // Check for tab delimited locus string\n    const tabTokens = locus.split('\\t')\n    if (tabTokens.length >= 3) {\n        // Possibly a tab-delimited locus\n        try {\n            const chr = browser.genome.getChromosomeName(tabTokens[0])\n            const start = parseInt(tabTokens[1].replace(/,/g, ''), 10) - 1\n            const end = parseInt(tabTokens[2].replace(/,/g, ''), 10)\n            if (!isNaN(start) && !isNaN(end)) {\n                return {chr, start, end}\n            }\n        } catch (e) {\n            // Not a tab delimited locus, apparently, but not really an error as that was a guess\n        }\n\n    }\n\n    const a = locus.split(':')\n    const chr = a[0]\n    if ('all' === chr && browser.genome.getChromosome(chr)) {\n        return {chr, start: 0, end: browser.genome.getChromosome(chr).bpLength}\n\n    } else if (undefined === browser.genome.getChromosome(chr)) {\n        return undefined\n\n    } else {\n        const queryChr = browser.genome.getChromosomeName(chr)\n        const extent = {\n            chr: queryChr,\n            start: 0,\n            end: browser.genome.getChromosome(chr).bpLength\n        }\n\n        if (a.length > 1) {\n\n            let b = a[1].split('-')\n            if (b.length > 2) {\n                // Allow for negative coordinates, which is possible if showing alignment soft clips\n                if (a[1].startsWith('-')) {\n                    const i = a[1].indexOf('-', 1)\n                    if (i > 0) {\n                        const t1 = a[1].substring(0, i)\n                        const t2 = a[1].substring(i + 1)\n                        b = [t1, t2]\n                    }\n                } else {\n                    return undefined\n                }\n\n            }\n\n            let numeric\n            numeric = b[0].replace(/,/g, '')\n            if (isNaN(numeric)) {\n                return undefined\n            }\n\n            extent.start = parseInt(numeric, 10) - 1\n            extent.end = extent.start + 1\n\n            if (1 === b.length) {\n                // Don't clamp coordinates if single coordinate is supplied.\n                extent.start -= 20\n                extent.end += 20\n            }\n\n            if (2 === b.length) {\n                numeric = b[1].replace(/,/g, '')\n                if (isNaN(numeric)) {\n                    return undefined\n                } else {\n                    extent.end = parseInt(numeric, 10)\n                }\n\n                // Allow negative coordinates only if browser is softclipped, i.e. there is at least alignment track with softclipping on\n                if (extent.start < 0 && !browser.isSoftclipped()) {\n                    const delta = -extent.start\n                    extent.start += delta\n                    extent.end += delta\n                }\n            }\n        }\n\n        return extent\n    }\n}\n\nasync function searchWebService(browser, locus, searchConfig) {\n\n    let path = searchConfig.url.replace(\"$FEATURE$\", locus.toUpperCase())\n    if (path.indexOf(\"$GENOME$\") > -1) {\n        path = path.replace(\"$GENOME$\", (browser.genome.id ? browser.genome.id : \"hg19\"))\n    }\n    const options = searchConfig.timeout ? {timeout: searchConfig.timeout} : undefined\n    const result = await igvxhr.loadString(path, options)\n\n    const locusObject = processSearchResult(browser, result, searchConfig)\n    if (locusObject) {\n        locusObject.locusSearchString = locus\n    }\n    return locusObject\n}\n\nfunction processSearchResult(browser, result, searchConfig) {\n\n    let results\n\n    if ('plain' === searchConfig.type) {\n        results = parseSearchResults(browser, result)\n    } else {\n        results = JSON.parse(result)\n    }\n\n    if (searchConfig.resultsField) {\n        results = results[searchConfig.resultsField]\n    }\n\n    if (!results || 0 === results.length) {\n        return undefined\n\n    } else {\n\n        const chromosomeField = searchConfig.chromosomeField || \"chromosome\"\n        const startField = searchConfig.startField || \"start\"\n        const endField = searchConfig.endField || \"end\"\n        const coords = searchConfig.coords || 1\n\n\n        let result\n        if (Array.isArray(results)) {\n            // Ignoring all but first result for now\n            // TODO -- present all and let user select if results.length > 1\n            result = results[0]\n        } else {\n            // When processing search results from Ensembl REST API\n            // Example: https://rest.ensembl.org/lookup/symbol/macaca_fascicularis/BRCA2?content-type=application/json\n            result = results\n        }\n\n        if (!(result.hasOwnProperty(chromosomeField) && (result.hasOwnProperty(startField)))) {\n            console.error(\"Search service results must include chromosome and start fields: \" + result)\n        }\n\n        const chrResult = result[chromosomeField]\n        const chromosome = browser.genome.getChromosome(chrResult)\n        if (!chromosome) {\n            return undefined\n        }\n        const chr = chromosome.name\n\n        let start = result[startField] - coords\n        let end = result[endField]\n        if (undefined === end) {\n            end = start + 1\n        }\n\n        const locusObject = {chr, start, end}\n\n        // Some GTEX hacks\n        const type = result.type ? result.type : \"gene\"\n        if (searchConfig.geneField && type === \"gene\") {\n            locusObject.gene = result[searchConfig.geneField]\n        }\n        if (searchConfig.snpField && type === \"snp\") {\n            locusObject.snp = result[searchConfig.snpField]\n        }\n\n        return locusObject\n    }\n}\n\n/**\n * Parse the igv line-oriented (non json) search results.\n * Example\n *    EGFR    chr7:55,086,724-55,275,031    refseq\n *\n */\nfunction parseSearchResults(browser, data) {\n\n    const linesTrimmed = []\n    const results = []\n    const lines = StringUtils.splitLines(data)\n\n    lines.forEach(function (item) {\n        if (\"\" === item) {\n            // do nothing\n        } else {\n            linesTrimmed.push(item)\n        }\n    })\n\n    linesTrimmed.forEach(function (line) {\n\n        var tokens = line.split(\"\\t\"),\n            source,\n            locusTokens,\n            rangeTokens,\n            obj\n\n        if (tokens.length >= 3) {\n\n            locusTokens = tokens[1].split(\":\")\n            rangeTokens = locusTokens[1].split(\"-\")\n            source = tokens[2].trim()\n\n            obj =\n                {\n                    gene: tokens[0],\n                    chromosome: browser.genome.getChromosomeName(locusTokens[0].trim()),\n                    start: parseInt(rangeTokens[0].replace(/,/g, '')),\n                    end: parseInt(rangeTokens[1].replace(/,/g, '')),\n                    type: (\"gtex\" === source ? \"snp\" : \"gene\")\n                }\n\n            results.push(obj)\n\n        }\n\n    })\n\n    return results\n\n}\n\n\n// Export some functions for unit testing\nexport {parseLocusString, searchWebService}\n\nexport default search\n\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport $ from \"./vendor/jquery-3.3.1.slim.js\"\nimport GenomeUtils from \"./genome/genome.js\"\n\nclass NavbarManager {\n\n    constructor(browser) {\n        this.browser = browser\n    }\n\n    navbarDidResize(width) {\n        this.updateNavbar(this.createResponsiveClassSchedule(width))\n    }\n\n    updateNavbar(responsiveClassSchedule) {\n\n        this.browser.$toggle_button_container.removeClass()\n        this.browser.$toggle_button_container.addClass(responsiveClassSchedule.$toggle_button_container)\n\n        $(this.browser.zoomWidget.zoomContainer).removeClass()\n        $(this.browser.zoomWidget.zoomContainer).addClass(responsiveClassSchedule.zoomContainer)\n    }\n\n    createResponsiveClassSchedule(navbarWidth) {\n\n        let candidates = {}\n\n        const isWGV = this.browser.isMultiLocusWholeGenomeView() ||\n            (this.browser.referenceFrameList &&\n                GenomeUtils.isWholeGenomeView(this.browser.referenceFrameList[0].chr))\n\n\n        if (isWGV) {\n            this.browser.windowSizePanel.hide()\n        } else {\n            this.browser.windowSizePanel.show()\n        }\n\n        if (navbarWidth > 990) {\n            candidates.$toggle_button_container = 'igv-navbar-toggle-button-container'\n            candidates.zoomContainer = 'igv-zoom-widget'\n        } else if (navbarWidth > 860) {\n            candidates.$toggle_button_container = 'igv-navbar-toggle-button-container'\n            candidates.zoomContainer = 'igv-zoom-widget-900'\n        } else if (navbarWidth > 540) {\n            candidates.$toggle_button_container = 'igv-navbar-toggle-button-container-750'\n            candidates.zoomContainer = 'igv-zoom-widget-900'\n        } else {\n            candidates.$toggle_button_container = 'igv-navbar-toggle-button-container-750'\n            candidates.zoomContainer = 'igv-zoom-widget-900'\n            this.browser.windowSizePanel.hide()\n        }\n\n        if (isWGV) {\n            candidates['zoomContainer'] = 'igv-zoom-widget-hidden'\n        }\n\n        return candidates\n    }\n}\n\nexport default NavbarManager\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016-2017 The Regents of the University of California\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nconst ChromosomeSelectWidget = function (browser, parent) {\n\n    this.container = DOMUtils.div({class: 'igv-chromosome-select-widget-container'})\n    parent.appendChild(this.container)\n\n    this.select = document.createElement('select')\n    this.select.setAttribute('name', 'chromosome-select-widget')\n    this.container.appendChild(this.select)\n\n    this.select.addEventListener('change', () => {\n        this.select.blur()\n        if (this.select.value !== '') {\n            browser.search(this.select.value)\n        }\n    })\n\n    this.showAllChromosomes = browser.config.showAllChromosomes !== false   // i.e. default to true\n\n}\n\nChromosomeSelectWidget.prototype.show = function () {\n    this.container.style.display = 'flex'\n}\n\nChromosomeSelectWidget.prototype.hide = function () {\n    this.container.style.display = 'none'\n}\n\nChromosomeSelectWidget.prototype.update = function (genome) {\n\n    const list = this.showAllChromosomes ? genome.chromosomeNames.slice() : genome.wgChromosomeNames.slice()\n    // console.log(`${ this.showAllChromosomes ? 'Do' : 'Do not'} show all chromosomes. List ${ list }`)\n\n    if (genome.showWholeGenomeView()) {\n        list.unshift('all')\n        list.unshift('')\n    }\n\n    this.select.innerHTML = ''\n\n    for (let name of list) {\n        const option = document.createElement('option')\n        option.setAttribute('value', name)\n        option.innerText = name\n        this.select.appendChild(option)\n    }\n\n}\n\nexport default ChromosomeSelectWidget\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../node_modules/igv-ui/dist/igv-ui.js'\nimport {prettyBasePairNumber} from './util/igvUtils.js'\n\nclass WindowSizePanel {\n    constructor(parent, browser) {\n\n        this.container = DOMUtils.div({class: 'igv-windowsize-panel-container'})\n        parent.appendChild(this.container)\n\n        browser.on('locuschange', (referenceFrameList) => {\n            this.updatePanel(referenceFrameList)\n        })\n\n        this.browser = browser\n\n    }\n\n    show() {\n        this.container.style.display = 'block'\n    }\n\n    hide() {\n        this.container.style.display = 'none'\n    }\n\n    updatePanel(referenceFrameList) {\n        const width = this.browser.calculateViewportWidth(this.browser.referenceFrameList.length)\n        this.container.innerText = 1 === referenceFrameList.length ? prettyBasePairNumber(Math.round(width * referenceFrameList[0].bpPerPixel)) : ''\n    }\n}\n\nexport default WindowSizePanel\n","\nimport {DOMUtils} from \"../../node_modules/igv-ui/dist/igv-ui.js\"\n\nclass CursorGuide {\n\n    constructor(columnContainer, browser) {\n        this.browser = browser\n        this.columnContainer = columnContainer\n\n        this.horizontalGuide = DOMUtils.div({class: 'igv-cursor-guide-horizontal'})\n        columnContainer.appendChild(this.horizontalGuide)\n\n        this.verticalGuide = DOMUtils.div({class: 'igv-cursor-guide-vertical'})\n        columnContainer.appendChild(this.verticalGuide)\n\n        this.addMouseHandler(browser)\n\n        this.setVisibility(browser.config.showCursorGuide)\n\n    }\n\n    addMouseHandler(browser) {\n\n        this.boundMouseMoveHandler = mouseMoveHandler.bind(this)\n        this.columnContainer.addEventListener('mousemove', this.boundMouseMoveHandler)\n\n        function mouseMoveHandler(event) {\n\n            const {x, y} = DOMUtils.translateMouseCoordinates(event, this.columnContainer)\n            this.horizontalGuide.style.top = `${y}px`\n\n            const target = document.elementFromPoint(event.clientX, event.clientY)\n\n            const viewport = findAncestorOfClass(target, 'igv-viewport')\n\n            if (viewport && browser.getRulerTrackView()) {\n\n                this.verticalGuide.style.left = `${x}px`\n\n                const columns = browser.root.querySelectorAll('.igv-column')\n                let index = undefined\n                const viewportParent = viewport.parentElement\n                for (let i = 0; i < columns.length; i++) {\n                    if (undefined === index && viewportParent === columns[i]) {\n                        index = i\n                    }\n                }\n\n                const rulerViewport = browser.getRulerTrackView().viewports[index]\n                const result = rulerViewport.mouseMove(event)\n\n                if (result) {\n\n                    const {start, bp, end} = result\n                    const interpolant = (bp - start) / (end - start)\n\n                    if (this.customMouseHandler) {\n                        this.customMouseHandler({start, bp, end, interpolant})\n                    }\n                }\n            }\n\n        }\n    }\n\n    removeMouseHandler() {\n        this.columnContainer.removeEventListener('mousemove', this.boundMouseMoveHandler)\n    }\n\n    setVisibility(showCursorGuide) {\n        if (true === showCursorGuide) {\n            this.show()\n        } else {\n            this.hide()\n        }\n    }\n\n    show() {\n        this.verticalGuide.style.display = 'block'\n        this.horizontalGuide.style.display = 'block'\n\n    }\n\n    hide() {\n\n        this.verticalGuide.style.display = 'none'\n        this.horizontalGuide.style.display = 'none'\n\n        if (this.browser.getRulerTrackView()) {\n            for (let viewport of this.browser.getRulerTrackView().viewports) {\n                viewport.$tooltip.hide()\n            }\n        }\n\n    }\n\n}\n\n/**\n * Walk up the tree until a parent is found with the given classname.  If no ancestor is found return undefined.\n * @param target\n * @param classname\n * @returns {*}\n */\nfunction findAncestorOfClass(target, classname) {\n\n    while (target.parentElement) {\n        if (target.parentElement.classList.contains(classname)) {\n            return target.parentElement\n        } else {\n            target = target.parentElement\n        }\n    }\n    return undefined\n\n}\n\n\nexport default CursorGuide\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass CursorGuideButton {\n\n    constructor(browser, parent) {\n\n        this.browser = browser\n\n        this.button = DOMUtils.div({class: 'igv-navbar-button'})\n        parent.appendChild(this.button)\n\n        this.button.textContent = 'cursor guide'\n\n        this.button.addEventListener('click', () => {\n            browser.cursorGuideVisible = !browser.cursorGuideVisible\n            browser.setCursorGuideVisibility(browser.cursorGuideVisible)\n            this.setButtonState(browser.cursorGuideVisible)\n        })\n\n        this.setButtonState(browser.cursorGuideVisible)\n\n        if (browser.config.showCursorTrackingGuideButton) {\n            this.show()\n        } else {\n            this.hide()\n        }\n\n    }\n\n    setButtonState(cursorGuideVisible) {\n        if (true === cursorGuideVisible) {\n            this.button.classList.add('igv-navbar-button-clicked')\n        } else {\n            this.button.classList.remove('igv-navbar-button-clicked')\n        }\n    }\n\n    show() {\n        this.button.style.display = 'block'\n        this.setButtonState(this.browser.cursorGuideVisible)\n    }\n\n    hide() {\n        this.button.style.display = 'none'\n    }\n}\n\nexport default CursorGuideButton\n","import {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass CenterLineButton {\n\n    constructor(browser, parent) {\n\n        this.browser = browser\n\n        this.button = DOMUtils.div({class: 'igv-navbar-button'})\n        parent.appendChild(this.button)\n\n        this.button.textContent = 'center line'\n\n        this.button.addEventListener('click', () => {\n            browser.isCenterLineVisible = !browser.isCenterLineVisible\n            browser.setCenterLineVisibility(browser.isCenterLineVisible)\n            this.setButtonState(browser.isCenterLineVisible)\n        })\n\n        this.setButtonState(browser.isCenterLineVisible)\n\n        if (browser.config.showCenterGuideButton) {\n            this.show()\n        } else {\n            this.hide()\n        }\n    }\n\n    setButtonState(isCenterLineVisible) {\n        if (true === isCenterLineVisible) {\n            this.button.classList.add('igv-navbar-button-clicked')\n        } else {\n            this.button.classList.remove('igv-navbar-button-clicked')\n        }\n    }\n\n    show() {\n        this.isVisible = true\n        this.button.style.display = 'block'\n        this.setButtonState(this.browser.isCenterLineVisible)\n    }\n\n    hide() {\n        this.isVisible = false\n        this.button.style.display = 'none'\n    }\n}\n\nexport default CenterLineButton\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass TrackLabelControl {\n\n    constructor(parent, browser) {\n\n        this.button = DOMUtils.div({class: 'igv-navbar-button'})\n        parent.appendChild(this.button)\n        this.button.textContent = 'track labels'\n\n        this.button.addEventListener('click', () => {\n            browser.trackLabelsVisible = !browser.trackLabelsVisible\n            this.setState(browser.trackLabelsVisible)\n            browser.setTrackLabelVisibility(browser.trackLabelsVisible)\n        })\n\n        this.browser = browser\n\n        this.setVisibility(browser.config.showTrackLabelButton)\n\n        this.setState(browser.trackLabelsVisible)\n    }\n\n    setVisibility(showTrackLabelButton) {\n        if (true === showTrackLabelButton) {\n            this.show()\n        } else {\n            this.hide()\n        }\n    }\n\n    setState(trackLabelsVisible) {\n        if (true === trackLabelsVisible) {\n            this.button.classList.add('igv-navbar-button-clicked')\n        } else {\n            this.button.classList.remove('igv-navbar-button-clicked')\n        }\n    }\n\n    show() {\n        this.button.style.display = 'block'\n        this.setState(this.browser.trackLabelsVisible)\n    }\n\n    hide() {\n        this.button.style.display = 'none'\n    }\n}\n\nexport default TrackLabelControl\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass SampleNameControl {\n\n    constructor(parent, browser) {\n\n        this.button = DOMUtils.div({class: 'igv-navbar-button'})\n        parent.appendChild(this.button)\n\n        this.button.innerText = 'Sample Names'\n\n        this.setState(browser.showSampleNames)\n\n        this.setVisibility(browser.showSampleNameButton)\n\n        this.button.addEventListener('click', () => {\n\n            browser.showSampleNames = !browser.showSampleNames\n\n            this.setState(browser.showSampleNames)\n\n            for (let {sampleNameViewport} of browser.trackViews) {\n                if (false === browser.showSampleNames) {\n                    sampleNameViewport.hide()\n                } else {\n                    sampleNameViewport.show()\n                }\n            }\n\n            browser.layoutChange()\n\n\n        })\n\n    }\n\n    setVisibility(showSampleNameButton) {\n\n        if (true === showSampleNameButton) {\n            this.show()\n        } else {\n            this.hide()\n        }\n    }\n\n    setState(showSampleNames) {\n        if (true === showSampleNames) {\n            this.button.classList.add('igv-navbar-button-clicked')\n        } else {\n            this.button.classList.remove('igv-navbar-button-clicked')\n        }\n    }\n\n    hide() {\n        this.button.style.display = 'none'\n    }\n\n    show() {\n        this.button.style.display = 'block'\n    }\n\n}\n\nexport default SampleNameControl\n","import {DOMUtils, Icon} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nconst sliderMin = 0\nlet sliderMax = 23\nlet sliderValueRaw = 0\n\nconst ZoomWidget = function (browser, parent) {\n\n    this.browser = browser\n\n    this.zoomContainer = DOMUtils.div({class: 'igv-zoom-widget'})\n    parent.appendChild(this.zoomContainer)\n\n    // zoom out\n    this.zoomOutButton = DOMUtils.div()\n    this.zoomContainer.appendChild(this.zoomOutButton)\n    this.zoomOutButton.appendChild(Icon.createIcon('minus-circle'))\n    this.zoomOutButton.addEventListener('click', () => {\n        // browser.zoomWithScaleFactor(2.0)\n        browser.zoomOut()\n    })\n\n    // Range slider\n    const el = DOMUtils.div()\n    this.zoomContainer.appendChild(el)\n    this.slider = document.createElement('input')\n    this.slider.type = 'range'\n\n    this.slider.min = `${sliderMin}`\n    this.slider.max = `${sliderMax}`\n\n    el.appendChild(this.slider)\n\n    this.slider.addEventListener('change', e => {\n\n        e.preventDefault()\n        e.stopPropagation()\n\n        const referenceFrame = browser.referenceFrameList[0]\n        const {bpLength} = referenceFrame.genome.getChromosome(referenceFrame.chr)\n        const {end, start} = referenceFrame\n\n        const extent = end - start\n\n        // bpLength/(end - start)\n        const scaleFactor = Math.pow(2, e.target.valueAsNumber)\n\n        // (end - start) = bpLength/scaleFactor\n        const zoomedExtent = bpLength / scaleFactor\n\n        // console.log(`zoom-widget - slider ${ e.target.value } scaleFactor ${ scaleFactor } extent-zoomed ${ StringUtils.numberFormatter(Math.round(zoomedExtent)) }`)\n\n        browser.zoomWithScaleFactor(zoomedExtent / extent)\n\n    })\n\n    // zoom in\n    this.zoomInButton = DOMUtils.div()\n    this.zoomContainer.appendChild(this.zoomInButton)\n    this.zoomInButton.appendChild(Icon.createIcon('plus-circle'))\n    this.zoomInButton.addEventListener('click', () => {\n        // browser.zoomWithScaleFactor(0.5)\n        browser.zoomIn()\n    })\n\n    browser.on('locuschange', (referenceFrameList) => {\n\n        if (this.browser.isMultiLocusMode()) {\n            this.disable()\n        } else {\n            this.enable()\n            this.update(referenceFrameList)\n        }\n\n    })\n\n}\n\nZoomWidget.prototype.update = function (referenceFrameList) {\n\n    const referenceFrame = referenceFrameList[0]\n    const {bpLength} = referenceFrame.genome.getChromosome(referenceFrame.chr)\n    const {start, end} = referenceFrame\n\n    sliderMax = Math.ceil(Math.log2(bpLength / this.browser.minimumBases()))\n\n    this.slider.max = `${sliderMax}`\n\n    const scaleFactor = bpLength / (end - start)\n    sliderValueRaw = Math.log2(scaleFactor)\n    this.slider.value = `${Math.round(sliderValueRaw)}`\n\n    const extent = end - start\n\n    const derivedScalefactor = Math.pow(2, sliderValueRaw)\n\n    const derivedExtent = bpLength / derivedScalefactor\n\n    // referenceFrame.description('zoom.update')\n\n    // console.log(`${ Date.now() } update - slider ${ this.slider.value } scaleFactor ${ Math.round(scaleFactor) } extent ${ StringUtils.numberFormatter(Math.round(extent)) }`)\n\n    // console.log(`update - sliderMin ${ sliderMin } sliderValue ${ this.slider.value } sliderMax ${ sliderMax } scaleFactor ${ scaleFactor.toFixed(3) } derived-scaleFactor ${ derivedScalefactor.toFixed(3) }`)\n\n}\n\nZoomWidget.prototype.enable = function () {\n\n    // this.zoomInButton.style.color = appleCrayonPalette[ 'steel' ];\n    // this.zoomInButton.style.pointerEvents = 'auto';\n    //\n    // this.zoomOutButton.style.color = appleCrayonPalette[ 'steel' ];\n    // this.zoomOutButton.style.pointerEvents = 'auto';\n\n    this.slider.disabled = false\n}\n\nZoomWidget.prototype.disable = function () {\n\n    // this.zoomInButton.style.color = appleCrayonPalette[ 'silver' ];\n    // this.zoomInButton.style.pointerEvents = 'none';\n    //\n    // this.zoomOutButton.style.color = appleCrayonPalette[ 'silver' ];\n    // this.zoomOutButton.style.pointerEvents = 'none';\n\n    this.slider.disabled = true\n}\n\nZoomWidget.prototype.hide = function () {\n    this.zoomContainer.style.display = 'none'\n}\n\nZoomWidget.prototype.show = function () {\n    this.zoomContainer.style.display = 'block'\n}\n\nZoomWidget.prototype.hideSlider = function () {\n    this.slider.style.display = 'none'\n}\n\nZoomWidget.prototype.showSlider = function () {\n    this.slider.style.display = 'block'\n}\n\nfunction lerpAlvyRaySmith(a, b, t) {\n    return a - t * (a - b)\n}\n\nexport default ZoomWidget\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nconst SVGSaveControl = function (parent, browser) {\n    const button = DOMUtils.div({class: 'igv-navbar-button'})\n    parent.append(button)\n\n    button.textContent = 'Save SVG'\n    button.addEventListener('click', () => browser.saveSVGtoFile({}))\n}\n\nexport default SVGSaveControl\n","import {DOMUtils} from '../node_modules/igv-ui/dist/igv-ui.js'\nimport {createColumn, insertElementAfter, insertElementBefore} from './util/igvUtils.js'\n\nconst viewportColumnManager =\n    {\n        createColumns: (columnContainer, count) => {\n\n            for (let i = 0; i < count; i++) {\n                if (0 === i) {\n                    createColumn(columnContainer, 'igv-column')\n                } else {\n                    columnContainer.appendChild(DOMUtils.div({class: 'igv-column-shim'}))\n                    createColumn(columnContainer, 'igv-column')\n                }\n            }\n\n        },\n\n        removeColumnAtIndex: (i, column) => {\n            const shim = 0 === i ? column.nextElementSibling : column.previousElementSibling\n            column.remove()\n            shim.remove()\n        },\n\n        insertAfter: referenceElement => {\n\n            const shim = DOMUtils.div({class: 'igv-column-shim'})\n            insertElementAfter(shim, referenceElement)\n\n            const column = DOMUtils.div({class: 'igv-column'})\n            insertElementAfter(column, shim)\n\n            return column\n        },\n\n        insertBefore: (referenceElement, count) => {\n\n            for (let i = 0; i < count; i++) {\n\n                const column = DOMUtils.div({class: 'igv-column'})\n                insertElementBefore(column, referenceElement)\n\n                if (count > 1 && i > 0) {\n                    const columnShim = DOMUtils.div({class: 'igv-column-shim'})\n                    insertElementBefore(columnShim, column)\n                }\n\n            }\n\n        },\n\n        indexOfColumn: (columnContainer, column) => {\n\n            const allColumns = columnContainer.querySelectorAll('.igv-column')\n\n            for (let i = 0; i < allColumns.length; i++) {\n                const c = allColumns[ i ]\n                if (c === column) {\n                    return i\n                }\n            }\n\n            return undefined\n        },\n    }\n\nexport {viewportColumnManager}\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass ViewportCenterLine {\n\n    constructor(browser, referenceFrame, column) {\n\n        this.browser = browser\n        this.referenceFrame = referenceFrame\n        this.column = column\n\n        this.container = DOMUtils.div({class: 'igv-center-line'})\n        column.appendChild(this.container)\n\n        if (browser.isCenterLineVisible) {\n            this.show()\n        } else {\n            this.hide()\n        }\n    }\n\n    repaint() {\n\n        if (this.referenceFrame) {\n\n            const ppb = 1.0 / this.referenceFrame.bpPerPixel\n            if (ppb > 1) {\n                const width = Math.floor(this.referenceFrame.toPixels(1))\n                this.container.style.width = `${width}px`\n                this.container.classList.remove('igv-center-line-thin')\n                this.container.classList.add('igv-center-line-wide')\n            } else {\n                this.container.style.width = '1px'\n                this.container.classList.remove('igv-center-line-wide')\n                this.container.classList.add('igv-center-line-thin')\n            }\n        }\n    }\n\n    show() {\n        this.isVisible = true\n        this.container.style.display = 'block'\n        this.repaint()\n    }\n\n    hide() {\n        this.isVisible = false\n        this.container.style.display = 'none'\n    }\n\n    resize() {\n        this.repaint()\n    }\n}\n\nexport default ViewportCenterLine\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport IGVGraphics from \"./igv-canvas.js\"\nimport {IGVColor, StringUtils} from \"../node_modules/igv-utils/src/index.js\"\nimport GenomeUtils from \"./genome/genome.js\"\n\nconst numberFormatter = StringUtils.numberFormatter\n\nclass RulerTrack {\n    constructor(browser) {\n\n        this.browser = browser\n        this.height = 40\n        this.name = \"\"\n        this.id = \"ruler\"\n        this.disableButtons = true\n        this.ignoreTrackMenu = true\n        this.order = Number.MIN_SAFE_INTEGER * 1e-2\n        this.removable = false\n        this.type = 'ruler'\n    }\n\n    async getFeatures(chr, start, end) {\n        return []\n    };\n\n    computePixelHeight(ignore) {\n        return this.height\n    };\n\n    draw({context, referenceFrame, pixelWidth, pixelHeight, bpPerPixel, bpStart}) {\n\n        if (GenomeUtils.isWholeGenomeView(referenceFrame.chr)) {\n            this.drawWholeGenome({context, pixelWidth, pixelHeight, bpPerPixel})\n        } else {\n            this.doDraw({context, referenceFrame, pixelWidth, pixelHeight, bpStart})\n        }\n    }\n\n    drawWholeGenome({context, pixelWidth, pixelHeight, bpPerPixel}) {\n\n        context.save()\n\n        IGVGraphics.fillRect(context, 0, 0, pixelWidth, pixelHeight, {'fillStyle': 'white'})\n\n        for (let name of this.browser.genome.wgChromosomeNames) {\n\n            let xBP = this.browser.genome.getCumulativeOffset(name)\n            let wBP = this.browser.genome.getChromosome(name).bpLength\n\n            let x = Math.round(xBP / bpPerPixel)\n            let w = Math.round(wBP / bpPerPixel)\n\n            this.renderChromosomeRect(context, x, 0, w, pixelHeight, name)\n        }\n\n        context.restore()\n\n    }\n\n    doDraw({context, referenceFrame, pixelWidth, pixelHeight, bpStart}) {\n\n        context.clearRect(0, 0, pixelWidth, pixelHeight)\n\n        const tickHeight = 6\n        const shim = 2\n\n        const bpLength = Math.floor(referenceFrame.toBP(pixelWidth))\n        const tick = findSpacing(bpLength, context.isSVG)\n\n        let nTick = Math.floor(bpStart / tick.majorTick) - 1\n\n        const {tickDelta, labelLength} = calculateDeltas(context, referenceFrame, bpStart, nTick, tick)\n\n        const index = this.browser.referenceFrameList.indexOf(referenceFrame)\n        // console.log(`ruler(${ index }) label-length ${ labelLength > tickDelta ? 'clobbers' : 'less than' } tick-delta ${ StringUtils.numberFormatter(tickDelta)} `)\n\n        let xTick\n        let bp\n        let accumulatedTickDelta = tickDelta\n        const labelLengthShim = 0.25 * labelLength\n        do {\n\n            bp = Math.floor(nTick * tick.majorTick)\n            const rulerLabel = `${StringUtils.numberFormatter(Math.floor(bp / tick.unitMultiplier))} ${tick.majorUnit}`\n\n            xTick = Math.round(referenceFrame.toPixels((bp - 1) - bpStart + 0.5))\n            const xLabel = Math.round(xTick - context.measureText(rulerLabel).width / 2)\n\n            if (xLabel > 0 && (labelLengthShim + labelLength) <= accumulatedTickDelta) {\n                IGVGraphics.fillText(context, rulerLabel, xLabel, this.height - (tickHeight / 0.75))\n                accumulatedTickDelta = 0\n            }\n\n            if (xTick > 0) {\n                IGVGraphics.strokeLine(context, xTick, this.height - tickHeight, xTick, this.height - shim)\n            }\n\n            bp = Math.floor((1 + nTick) * tick.majorTick)\n            let pixel = Math.round(referenceFrame.toPixels((bp - 1) - bpStart + 0.5))\n            let delta = (pixel - xTick) / 2\n            let xx = xTick + delta\n            if (xx > 0) {\n                IGVGraphics.strokeLine(context, xx, this.height - tickHeight, xx, this.height - shim)\n            }\n\n            ++nTick\n            accumulatedTickDelta += tickDelta\n\n        } while (xTick < pixelWidth)\n\n        IGVGraphics.strokeLine(context, 0, this.height - shim, pixelWidth, this.height - shim)\n\n    }\n\n    renderChromosomeRect(ctx, x, y, w, h, name) {\n\n        ctx.textAlign = 'center'\n        ctx.textBaseline = 'middle'\n        ctx.font = '12px sans-serif'\n\n        IGVGraphics.strokeLine(ctx, x + w, y, x + w, y + h, {strokeStyle: IGVColor.greyScale(191)})\n\n        const shortName = (name.startsWith(\"chr\")) ? name.substring(3) : name\n\n        if (w > ctx.measureText(shortName).width) {\n            IGVGraphics.fillText(ctx, shortName, (x + (w / 2)), (y + (h / 2)), {fillStyle: IGVColor.greyScale(68)})\n        }\n    }\n\n    get supportsWholeGenome() {\n        return true\n    };\n\n    dispose() {\n        // do stuff\n    }\n}\n\nfunction findSpacing(bpLength, isSVG) {\n\n    if (bpLength < 10) {\n        return new Tick(1, 'bp', 1)\n    }\n\n    const nZeroes = Math.floor(Math.log10(bpLength))\n\n    let majorUnit = 'bp'\n    let unitMultiplier = 1\n\n    if (nZeroes > 9) {\n        majorUnit = 'gb'\n        unitMultiplier = 1e9\n    } else if (nZeroes > 6) {\n        majorUnit = 'mb'\n        unitMultiplier = 1e6\n    } else if (nZeroes > 3) {\n        majorUnit = 'kb'\n        unitMultiplier = 1e3\n    }\n\n    const denom = Math.pow(10, nZeroes - 1)\n    const nMajorTicks = bpLength / denom\n\n    // const threshold = 25\n    const threshold = 3 * 25\n\n    const belowThresholdTick = Math.pow(10, nZeroes - 1)\n    const aboveThresholdTick = Math.pow(10, nZeroes) / 2\n\n    // console.log(`zeros ${ nZeroes } tick-threshold ${ threshold } ticks ${ nMajorTicks } belowTick ${ StringUtils.numberFormatter(belowThresholdTick) } aboveTick ${ StringUtils.numberFormatter(aboveThresholdTick) }`)\n\n    const majorTick = (nMajorTicks < threshold && isSVG !== true) ? belowThresholdTick : aboveThresholdTick\n\n    return new Tick(majorTick, majorUnit, unitMultiplier)\n}\n\nfunction calculateDeltas(context, referenceFrame, bpStart, nTick, tick) {\n\n    const tickDelta = getX(referenceFrame, getBP(1 + nTick, tick), bpStart) - getX(referenceFrame, getBP(nTick, tick), bpStart)\n\n    const label = `${StringUtils.numberFormatter(Math.floor(getBP(nTick, tick) / tick.unitMultiplier))} ${tick.majorUnit}`\n    const labelLength = Math.floor(context.measureText(label).width)\n\n    return {tickDelta, labelLength}\n\n    function getBP(nTick, tick) {\n        return Math.floor(nTick * tick.majorTick)\n    }\n\n    function getX(referenceFrame, bp, bpStart) {\n        return Math.round(referenceFrame.toPixels((bp - 1) - bpStart + 0.5))\n    }\n}\n\nclass Tick {\n\n    constructor(majorTick, majorUnit, unitMultiplier) {\n        this.majorTick = majorTick\n        this.minorTick = majorTick / 10.0\n        this.majorUnit = majorUnit\n        this.unitMultiplier = unitMultiplier\n    }\n\n    description(blurb) {\n        console.log((blurb || '') + ' tick ' + numberFormatter(this.majorTick) + ' label width ' + numberFormatter(this.labelWidthBP) + ' multiplier ' + this.unitMultiplier)\n    }\n}\n\nexport default RulerTrack\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nconst CircularViewControl = function (parent, browser) {\n\n    this.button = DOMUtils.div({class: 'igv-navbar-button'})\n    parent.appendChild(this.button)\n    this.button.textContent = 'circular view'\n\n    this.button.addEventListener('click', () => {\n        browser.circularViewVisible = !browser.circularViewVisible\n        //this.setState(browser.circularViewVisible)\n    })\n\n    this.browser = browser\n\n    this.setVisibility(browser.config.showCircularViewButton)\n\n    this.setState(browser.circularViewVisible)\n\n}\n\nCircularViewControl.prototype.setVisibility = function (showCircularViewButton) {\n    if (true === showCircularViewButton) {\n        this.show()\n    } else {\n        this.hide()\n    }\n}\n\nCircularViewControl.prototype.setState = function (circularViewVisible) {\n    if (true === circularViewVisible) {\n        this.button.classList.add('igv-navbar-button-clicked')\n    } else {\n        this.button.classList.remove('igv-navbar-button-clicked')\n    }\n}\n\nCircularViewControl.prototype.show = function () {\n    this.button.style.display = 'block'\n    this.setState(this.browser.circularViewVisible)\n}\n\nCircularViewControl.prototype.hide = function () {\n    this.button.style.display = 'none'\n}\n\nexport default CircularViewControl\n","/**\n * User supplied button for the navbar\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nconst CustomButton = function (parent, browser, b) {\n\n    const button = DOMUtils.div({class: 'igv-navbar-button'})\n    parent.append(button)\n    button.textContent = b.label\n    button.addEventListener('click', () => b.callback(browser))\n}\n\nexport default CustomButton\n","import {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\nimport ROISet, {screenCoordinates} from './ROISet.js'\nimport {Popover} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass ROIManager {\n\n    constructor(browser, roiMenu, roiTable, top, roiSets) {\n\n        this.browser = browser\n        this.roiMenu = roiMenu\n        this.roiTable = roiTable\n        this.top = top\n        this.roiSets = roiSets || []\n        this.boundLocusChangeHandler = locusChangeHandler.bind(this)\n        browser.on('locuschange', this.boundLocusChangeHandler)\n\n    }\n\n    async initialize() {\n\n        if (this.roiSets.length > 0) {\n            this.browser.showROITableButton = true\n            this.browser.roiTableControl.setVisibility(this.browser.showROITableButton)\n        }\n\n        const promises = this.roiSets.map(roiSet => this.renderROISet({\n            browser: this.browser,\n            pixelTop: this.top,\n            roiSet\n        }))\n\n        if (promises.length > 0) {\n            await Promise.all(promises)\n        }\n\n        const records = await this.getTableRecords()\n        this.roiTable.renderTable(records)\n\n    }\n\n    async loadROI(config, genome) {\n\n        const configs = Array.isArray(config) ? config : [config]\n\n        for (let c of configs) {\n            this.roiSets.push(new ROISet(c, genome))\n        }\n\n        await this.initialize()\n\n    }\n\n    clearROIs() {\n\n        this.roiTable.clearTable()\n\n        const elements = this.browser.columnContainer.querySelectorAll('.igv-roi-region')\n        for (let el of elements) {\n            el.remove()\n        }\n\n        for (let roiSet of this.roiSets) {\n            roiSet.dispose()\n        }\n\n        this.roiSets = []\n\n    }\n\n    async getTableRecords() {\n\n        const records = []\n\n        for (let roiSet of this.roiSets) {\n            const setName = roiSet.isUserDefined ? '' : (roiSet.name || '')\n            const allFeatures = await roiSet.getAllFeatures()\n            for (let chr of Object.keys(allFeatures)) {\n                for (let feature of allFeatures[chr]) {\n                    records.push({setName, feature})\n                }\n            }\n        }\n\n        return records\n    }\n\n    presentTable() {\n        this.roiTable.present()\n    }\n\n    async repaintTable() {\n        const records = await this.getTableRecords()\n        this.roiTable.renderTable(records)\n    }\n\n    dismissTable() {\n        this.roiTable.dismiss()\n    }\n\n    async updateUserDefinedROISet(feature) {\n\n        let userDefinedROISet = await this.getUserDefinedROISet()\n\n        if (undefined === userDefinedROISet) {\n            userDefinedROISet = this.initializeUserDefinedROISet()\n        }\n\n        userDefinedROISet.addFeature(feature)\n\n        if (false === this.browser.showROITableButton) {\n            this.setROITableButtonVisibility(true)\n        }\n\n        await this.renderROISet({browser: this.browser, pixelTop: this.top, roiSet: userDefinedROISet})\n\n        const records = await this.getTableRecords()\n        this.roiTable.renderTable(records)\n    }\n\n    setROITableButtonVisibility(isVisible) {\n        this.browser.showROITableButton = isVisible\n        this.browser.roiTableControl.setVisibility(this.browser.showROITableButton)\n    }\n\n    async renderAllROISets() {\n\n        for (let roiSet of this.roiSets) {\n            await this.renderROISet({browser: this.browser, pixelTop: this.top, roiSet})\n        }\n    }\n\n    async renderROISet({browser, pixelTop, roiSet}) {\n\n        const columns = browser.columnContainer.querySelectorAll('.igv-column')\n\n        for (let i = 0; i < columns.length; i++) {\n\n            let {chr, start: viewStart, end: viewEnd, bpPerPixel} = browser.referenceFrameList[i]\n\n            const elements = columns[i].querySelectorAll('.igv-roi-region')\n            for (let el of elements) {\n                const regionKey = el.dataset.region\n                const {chr: regionChr, start: regionStart, end: regionEnd} = parseRegionKey(regionKey)\n                if (regionChr !== chr || regionEnd < viewStart || regionStart > viewEnd) {\n                    el.remove()\n                }\n            }\n\n            const features = await roiSet.getFeatures(chr, viewStart, viewEnd)\n\n            if (features) {\n\n                for (let feature of features) {\n\n                    const regionKey = createRegionKey(chr, feature.start, feature.end)\n\n                    const {\n                        x: pixelX,\n                        width: pixelWidth\n                    } = screenCoordinates(Math.max(viewStart, feature.start), Math.min(viewEnd, feature.end), viewStart, bpPerPixel)\n\n\n                    const el = columns[i].querySelector(createSelector(regionKey))\n\n                    if (el) {\n                        el.style.left = `${pixelX}px`\n                        el.style.width = `${pixelWidth}px`\n\n                    } else {\n                        const element = this.createRegionElement(browser.columnContainer, pixelTop, pixelX, pixelWidth, roiSet, regionKey, feature.name)\n                        columns[i].appendChild(element)\n                    }\n                }\n            }\n        }\n    }\n\n    createRegionElement(columnContainer, pixelTop, pixelX, pixelWidth, roiSet, regionKey, name) {\n\n        const regionElement = DOMUtils.div({class: 'igv-roi-region'})\n\n        regionElement.style.top = `${pixelTop}px`\n        regionElement.style.left = `${pixelX}px`\n        regionElement.style.width = `${pixelWidth}px`\n        regionElement.style.backgroundColor = roiSet.color\n        regionElement.dataset.region = regionKey\n\n        const header = DOMUtils.div()\n        regionElement.appendChild(header)\n\n        header.style.backgroundColor = roiSet.headerColor\n\n        if (true === roiSet.isUserDefined) {\n            header.addEventListener('click', event => {\n                event.preventDefault()\n                event.stopPropagation()\n\n                const {x, y} = DOMUtils.translateMouseCoordinates(event, columnContainer)\n                this.roiMenu.present(x, y, this, columnContainer, regionElement)\n            })\n        } else if (name) {\n            header.addEventListener('click', event => {\n                event.preventDefault()\n                event.stopPropagation()\n                if (this.popover) {\n                    this.popover.dispose()\n                }\n                this.popover = new Popover(columnContainer, roiSet.name)\n                this.popover.presentContentWithEvent(event, name)\n            })\n        } else {\n            header.style.pointerEvents = 'none'\n        }\n\n        return regionElement\n    }\n\n    renderSVGContext(context, {deltaX, deltaY}) {\n\n        for (const regionElement of document.querySelectorAll('.igv-roi-region')) {\n\n            // body\n            const { x, y, width, height } = regionElement.getBoundingClientRect()\n            context.fillStyle = regionElement.style.backgroundColor\n            context.fillRect(x+deltaX, y+deltaY, width, height)\n\n            // header\n            const header = regionElement.querySelector('div')\n            const { x:xx, y:yy, width:ww, height:hh } = header.getBoundingClientRect()\n            context.fillStyle = header.style.backgroundColor\n            context.fillRect(xx+deltaX, yy+deltaY, ww, hh)\n        }\n    }\n\n    async getUserDefinedROISet() {\n        return this.roiSets.find(roiSet => true === roiSet.isUserDefined)\n    }\n\n    initializeUserDefinedROISet() {\n\n        const config =\n            {\n                isUserDefined: true,\n                features: []\n            }\n        const userDefinedROISet = new ROISet(config, this.browser.genome)\n        this.roiSets.push(userDefinedROISet)\n\n        return userDefinedROISet\n    }\n\n    async deleteUserDefinedRegionWithKey(regionKey, columnContainer) {\n\n        columnContainer.querySelectorAll(createSelector(regionKey)).forEach(node => node.remove())\n\n        const feature = await this.findUserDefinedRegionWithKey(regionKey)\n\n        const set = await this.getUserDefinedROISet()\n\n        if (set) {\n            set.removeFeature(feature)\n        }\n\n        const records = await this.getTableRecords()\n\n        if (0 === records.length) {\n            this.browser.roiTableControl.buttonHandler(false)\n            this.setROITableButtonVisibility(false)\n        }\n\n    }\n\n    async findUserDefinedRegionWithKey(regionKey) {\n\n        const {chr, start, end} = parseRegionKey(regionKey)\n        const set = await this.getUserDefinedROISet()\n\n        if (set) {\n            const features = await set.getFeatures(chr, start, end)\n\n            for (let feature of features) {\n                if (feature.chr === chr && feature.start >= start && feature.end <= end) {\n                    return feature\n                }\n            }\n        }\n\n        return undefined\n    }\n\n    toJSON() {\n        return this.roiSets.map(roiSet => roiSet.toJSON())\n    }\n\n    dispose() {\n\n        this.browser.off('locuschange', this.boundLocusChangeHandler)\n\n        const removable = this.browser.columnContainer.querySelectorAll('.igv-roi-region')\n\n        for (let el of removable) {\n            el.remove()\n        }\n\n        if (this.roiMenu) {\n            this.roiMenu.dispose()\n        }\n\n        if (this.roiTable) {\n            this.roiTable.dispose()\n        }\n\n        for (let roiSet of this.roiSets) {\n            roiSet.dispose()\n        }\n\n        for (let key of Object.keys(this)) {\n            this[key] = undefined\n        }\n\n    }\n}\n\nfunction locusChangeHandler() {\n    this.renderAllROISets()\n}\n\nfunction createRegionKey(chr, start, end) {\n    return `${chr}-${start}-${end}`\n}\n\nfunction createSelector(regionKey) {\n    return `[data-region=\"${regionKey}\"]`\n}\n\nfunction parseRegionKey(regionKey) {\n    let [chr, ss, ee] = regionKey.split('-')\n    ss = parseInt(ss)\n    ee = parseInt(ee)\n\n    return {chr, start: ss, end: ee, locus: `${chr}:${ss}-${ee}`, bedRecord: `${chr}\\t${ss}\\t${ee}`}\n}\n\nexport {createRegionKey, parseRegionKey}\n\nexport default ROIManager\n","import { DOMUtils } from '../../node_modules/igv-ui/dist/igv-ui.js'\nimport { StringUtils } from '../../node_modules/igv-utils/src/index.js'\n\nimport { createRegionKey, parseRegionKey } from './ROIManager.js'\nimport RegionTableBase from '../ui/regionTableBase.js'\n\nclass ROITable extends RegionTableBase {\n    constructor(config) {\n\n        const cooked = Object.assign({ 'width':'512px' }, config)\n        super(cooked)\n    }\n\n    tableRowDOM(record) {\n\n        const dom = DOMUtils.div({ class: 'igv-roi-table-row' })\n\n        const { setName, feature } = record\n        dom.dataset.region = createRegionKey(feature.chr, feature.start, feature.end)\n\n        let strings =\n            [\n                feature.chr,\n                StringUtils.numberFormatter(feature.start),\n                StringUtils.numberFormatter(feature.end),\n                feature.name || '',\n                setName\n            ];\n\n        if (4 === this.columnFormat.length) {\n            strings = strings.slice(0, 4)\n        }\n\n        for (let i = 0; i < strings.length; i++) {\n            const el = DOMUtils.div()\n            dom.appendChild(el)\n            el.style.width = this.columnFormat[ i ].width\n            el.innerText = strings[ i ]\n        }\n\n        this.tableRowDOMHelper(dom)\n\n        return dom\n    }\n\n    renderTable(records) {\n\n        Array.from(this.tableRowContainer.querySelectorAll('.igv-roi-table-row')).forEach(el => el.remove())\n\n        if (records.length > 0) {\n\n            const sortedRecords = records.sort((a, b) => (a.feature.chr.localeCompare(b.feature.chr) || a.feature.start - b.feature.start || a.feature.end - b.feature.end))\n\n            for (let record of sortedRecords) {\n                const row = this.tableRowDOM(record)\n                this.tableRowContainer.appendChild(row)\n            }\n\n        }\n    }\n\n    dispose() {\n\n        document.removeEventListener('click', this.boundGotoButtonHandler)\n\n        this.browser.roiTableControl.buttonHandler(false)\n        super.dispose()\n    }\n\n    static getColumnFormatConfiguration(doIncludeROISetNames) {\n\n        if (true === doIncludeROISetNames) {\n\n            return [\n                    { label: 'Chr', width: '20%' },\n                    { label: 'Start', width: '15%' },\n                    { label: 'End', width: '15%' },\n                    { label: 'Description', width: '30%' },\n                    { label: 'ROI Set', width: '20%' }\n                ]\n        } else {\n            return [\n                    { label: 'Chr', width: '25%' },\n                    { label: 'Start', width: '20%' },\n                    { label: 'End', width: '20%' },\n                    { label: 'Description', width: '35%' }\n                ]\n        }\n\n    }\n\n    static gotoButtonHandler (event) {\n\n        event.stopPropagation()\n\n        const selected = this.tableDOM.querySelectorAll('.igv-roi-table-row-selected')\n        const loci = []\n        for (let el of selected) {\n            const { locus } = parseRegionKey(el.dataset.region)\n            loci.push(locus)\n        }\n\n        for (let el of this.tableDOM.querySelectorAll('.igv-roi-table-row')) {\n            el.classList.remove('igv-roi-table-row-selected')\n        }\n\n        this.setTableRowSelectionState(false)\n\n        if (loci.length > 0) {\n            this.browser.search(loci.join(' '))\n        }\n\n    }\n\n}\nexport default ROITable\n","import { DOMUtils, UIUtils } from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass ROIMenu {\n    constructor(browser, parent) {\n\n        this.browser = browser\n\n        // container\n        this.container = DOMUtils.div({ class: 'igv-roi-menu-next-gen' })\n        parent.appendChild(this.container)\n\n        // header\n        const header = DOMUtils.div()\n        this.container.appendChild(header)\n\n        UIUtils.attachDialogCloseHandlerWithParent(header, () => this.container.style.display = 'none')\n\n        // body\n        this.body = DOMUtils.div()\n        this.container.appendChild(this.body)\n\n        this.container.style.display = 'none'\n\n    }\n\n    async present(x, y, roiManager, columnContainer, regionElement) {\n\n        removeAllChildNodes(this.body)\n\n        const feature = await this.browser.roiManager.findUserDefinedRegionWithKey(regionElement.dataset.region)\n\n        // Description Copy\n        const _description_copy_ = DOMUtils.div()\n        this.body.appendChild(_description_copy_)\n\n        const placeholder = 'Description'\n        const str = (feature.name || placeholder)\n\n        _description_copy_.innerText = str\n        _description_copy_.setAttribute('title', str)\n        placeholder === str ? _description_copy_.classList.add('igv-roi-placeholder') : _description_copy_.classList.remove('igv-roi-placeholder')\n\n\n        // Set Description\n        const description = DOMUtils.div()\n        this.body.appendChild(description)\n        description.innerText = 'Set Description'\n\n        description.addEventListener('click', event => {\n\n            event.stopPropagation()\n\n            this.container.style.display = 'none'\n\n            const callback = () => {\n\n                const value = this.browser.inputDialog.value || ''\n                feature.name = value.trim()\n\n                this.container.style.display = 'none'\n\n                this.browser.roiManager.repaintTable()\n            }\n\n            const config =\n                {\n                    label: 'Description',\n                    value: (feature.name || ''),\n                    callback\n                }\n\n            this.browser.inputDialog.present(config, event)\n\n        })\n\n\n        // Delete Region\n        const _delete_ = DOMUtils.div()\n        this.body.appendChild(_delete_)\n        _delete_.innerText = 'Delete Region'\n\n        _delete_.addEventListener('click', event => {\n            event.stopPropagation()\n            this.container.style.display = 'none'\n            this.browser.roiManager.deleteUserDefinedRegionWithKey(regionElement.dataset.region, this.browser.columnContainer)\n        })\n\n\n\n\n\n\n\n        // columnContainer.addEventListener('click', event => {\n        //     event.stopPropagation()\n        //     this.container.style.display = 'none'\n        // })\n\n        this.container.style.left = `${ x }px`\n        this.container.style.top  = `${ y }px`\n        this.container.style.display = 'flex'\n\n    }\n\n    async __present(x, y, roiManager, columnContainer, regionElement) {\n\n        removeAllChildNodes(this.container)\n\n        const feature = await this.browser.roiManager.findUserDefinedRegionWithKey(regionElement.dataset.region)\n\n        let row\n\n        // Go To\n        // row = DOMUtils.div({ class: 'igv-roi-menu-row' })\n        // row.innerText = 'Go To'\n        // this.container.appendChild(row)\n        //\n        // row.addEventListener('click', event => {\n        //     event.stopPropagation()\n        //     this.container.style.display = 'none'\n        //\n        //     const { locus } = parseRegionKey(regionElement.dataset.region)\n        //     this.browser.search(locus)\n        // })\n\n        // Description:\n        row = DOMUtils.div({ class: 'igv-roi-menu-row-edit-description' })\n        this.container.appendChild(row)\n\n        row.addEventListener('click', e => {\n            e.stopPropagation()\n        })\n\n        const str = 'description-input'\n\n        const label = document.createElement('label')\n        row.appendChild(label)\n\n        label.setAttribute('for', str)\n        label.innerText = 'Description:'\n\n        const input = document.createElement('input')\n        row.appendChild(input)\n\n        input.setAttribute('type', 'text')\n        input.setAttribute('name', str)\n        // input.setAttribute('placeholder', feature.name || 'Edit Description')\n        input.setAttribute('placeholder', '')\n        input.value = feature.name || ''\n\n        input.addEventListener('change', async e => {\n\n            e.stopPropagation()\n\n            const feature = await this.browser.roiManager.findUserDefinedRegionWithKey(regionElement.dataset.region)\n            feature.name = input.value\n\n            input.blur()\n            this.container.style.display = 'none'\n\n            await this.browser.roiManager.repaintTable()\n        })\n\n\n        // Delete\n        row = DOMUtils.div({ class: 'igv-roi-menu-row' })\n        row.innerText = 'Delete region'\n        this.container.appendChild(row)\n\n        row.addEventListener('click', event => {\n            event.stopPropagation()\n            this.container.style.display = 'none'\n            this.browser.roiManager.deleteUserDefinedRegionWithKey(regionElement.dataset.region, this.browser.columnContainer)\n        })\n\n        this.container.style.left = `${ x }px`\n        this.container.style.top  = `${ y }px`\n        this.container.style.display = 'flex'\n\n        columnContainer.addEventListener('click', event => {\n            event.stopPropagation()\n            this.container.style.display = 'none'\n        })\n\n    }\n\n    dispose() {\n        this.container.innerHTML = ''\n    }\n\n}\n\nfunction removeAllChildNodes(parent) {\n    while (parent.firstChild) {\n        parent.removeChild(parent.firstChild);\n    }\n}\n\nexport default ROIMenu\n","import FeatureSource from '../feature/featureSource.js'\nimport IGVGraphics from \"../igv-canvas.js\"\nimport { ROI_DEFAULT_COLOR, screenCoordinates } from \"./ROISet.js\"\n\nclass TrackROISet {\n\n    constructor(config, genome) {\n        this.name = config.name\n        this.featureSource = config.featureSource || FeatureSource(config, genome)\n        this.color = config.color || ROI_DEFAULT_COLOR\n    }\n\n    async getFeatures(chr, start, end) {\n        return this.featureSource.getFeatures({chr, start, end})\n    }\n\n    draw(drawConfiguration) {\n\n        const { context, bpPerPixel, bpStart, pixelTop, pixelHeight, pixelWidth, features, } = drawConfiguration\n\n        if (!features) {\n            return\n        }\n\n        const bpEnd = bpStart + (pixelWidth * bpPerPixel) + 1\n        for (let { start:regionStartBP, end:regionEndBP } of features) {\n\n            if (regionEndBP < bpStart) {\n                continue\n            }\n\n            if (regionStartBP > bpEnd) {\n                break\n            }\n\n            const { x, width } = screenCoordinates(regionStartBP, regionEndBP, bpStart, bpPerPixel)\n            IGVGraphics.fillRect(context, x, pixelTop, width, pixelHeight, { fillStyle: this.color })\n        }\n    }\n}\n\nexport default TrackROISet\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2016 University of California San Diego\n * Author: Jim Robinson\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {DOMUtils} from '../../node_modules/igv-ui/dist/igv-ui.js'\n\nclass ROITableControl {\n\n    constructor(parent, browser) {\n        this.browser = browser\n        this.button = DOMUtils.div({class: 'igv-navbar-button'})\n        parent.appendChild(this.button)\n        this.button.textContent = 'ROI Table'\n\n        this.button.addEventListener('click', () => {\n            this.buttonHandler(!browser.roiTableVisible)\n        })\n\n        this.browser = browser\n\n        this.setVisibility(browser.showROITableButton)\n\n        this.setState(browser.roiTableVisible)\n    }\n\n    buttonHandler(status) {\n        this.browser.roiTableVisible = status\n        this.setState(this.browser.roiTableVisible)\n        this.browser.setROITableVisibility(this.browser.roiTableVisible)\n    }\n\n    setVisibility(doShowROITablelButton) {\n        if (true === doShowROITablelButton) {\n            this.show()\n        } else {\n            this.hide()\n        }\n    }\n\n    setState(roiTableVisible) {\n        if (true === roiTableVisible) {\n            this.button.classList.add('igv-navbar-button-clicked')\n        } else {\n            this.button.classList.remove('igv-navbar-button-clicked')\n        }\n    }\n\n    show() {\n        this.button.style.display = 'block'\n        this.setState(this.browser.roiTableVisible)\n    }\n\n    hide() {\n        this.button.style.display = 'none'\n    }\n}\n\n\nexport default ROITableControl\n","\nimport $ from \"./vendor/jquery-3.3.1.slim.js\"\nimport {InputDialog, GenericColorPicker} from '../node_modules/igv-ui/dist/igv-ui.js'\nimport {BGZip, FileUtils, igvxhr, StringUtils, URIUtils} from \"../node_modules/igv-utils/src/index.js\"\nimport {DOMUtils, Icon} from \"../node_modules/igv-ui/dist/igv-ui.js\"\nimport Alert from './ui/alert.js'\nimport * as TrackUtils from './util/trackUtils.js'\nimport TrackView, {igv_axis_column_width} from \"./trackView.js\"\nimport C2S from \"./canvas2svg.js\"\nimport TrackFactory from \"./trackFactory.js\"\nimport ROISet from \"./roi/ROISet.js\"\nimport XMLSession from \"./session/igvXmlSession.js\"\nimport GenomeUtils from \"./genome/genome.js\"\nimport loadPlinkFile from \"./sampleInformation.js\"\nimport ReferenceFrame, {createReferenceFrameList} from \"./referenceFrame.js\"\nimport {buildOptions, createColumn, doAutoscale, getElementAbsoluteHeight, getFilename} from \"./util/igvUtils.js\"\nimport {createViewport} from \"./util/viewportUtils.js\"\nimport GtexUtils from \"./gtex/gtexUtils.js\"\nimport {defaultSequenceTrackOrder} from './sequenceTrack.js'\nimport version from \"./version.js\"\nimport FeatureSource from \"./feature/featureSource.js\"\nimport {defaultNucleotideColors} from \"./util/nucleotideColors.js\"\nimport search from \"./search.js\"\nimport NavbarManager from \"./navbarManager.js\"\nimport ChromosomeSelectWidget from \"./ui/chromosomeSelectWidget.js\"\nimport WindowSizePanel from \"./windowSizePanel.js\"\nimport CursorGuide from \"./ui/cursorGuide.js\"\nimport CursorGuideButton from \"./ui/cursorGuideButton.js\"\nimport CenterLineButton from './ui/centerLineButton.js'\nimport TrackLabelControl from \"./ui/trackLabelControl.js\"\nimport SampleNameControl from \"./ui/sampleNameControl.js\"\nimport ZoomWidget from \"./ui/zoomWidget.js\"\nimport DataRangeDialog from \"./ui/dataRangeDialog.js\"\nimport HtsgetReader from \"./htsget/htsgetReader.js\"\nimport SVGSaveControl from \"./ui/svgSaveControl.js\"\nimport MenuPopup from \"./ui/menuPopup.js\"\nimport {viewportColumnManager} from './viewportColumnManager.js'\nimport ViewportCenterLine from './ui/viewportCenterLine.js'\nimport IdeogramTrack from \"./ideogramTrack.js\"\nimport RulerTrack from \"./rulerTrack.js\"\nimport GtexSelection from \"./gtex/gtexSelection.js\"\nimport CircularViewControl from \"./ui/circularViewControl.js\"\nimport {createCircularView, makeCircViewChromosomes} from \"./jbrowse/circularViewUtils.js\"\nimport CustomButton from \"./ui/customButton.js\"\nimport ROIManager from './roi/ROIManager.js'\nimport ROITable from './roi/ROITable.js'\nimport ROIMenu from './roi/ROIMenu.js'\nimport TrackROISet from \"./roi/trackROISet.js\"\nimport ROITableControl from './ui/roiTableControl.js'\n\n// css - $igv-scrollbar-outer-width: 14px;\nconst igv_scrollbar_outer_width = 14\n\n// css - $igv-track-drag-column-width: 12px;\nconst igv_track_manipulation_handle_width = 12\n\n// css - $igv-track-gear-menu-column-width: 28px;\nconst igv_track_gear_menu_column_width = 28\n\n// $igv-column-shim-width: 1px;\n// $igv-column-shim-margin: 2px;\nconst column_multi_locus_shim_width = 2 + 1 + 2\n\nconst defaultSampleNameViewportWidth = 200\n\nclass Browser {\n\n    constructor(config, parentDiv) {\n\n        this.config = config\n        this.guid = DOMUtils.guid()\n        this.namespace = '.browser_' + this.guid\n\n        this.parent = parentDiv\n\n        this.root = DOMUtils.div({class: 'igv-container'})\n        parentDiv.appendChild(this.root)\n\n        this.alert = new Alert(this.root)\n\n        this.columnContainer = DOMUtils.div({class: 'igv-column-container'})\n        this.root.appendChild(this.columnContainer)\n\n        this.menuPopup = new MenuPopup(this.columnContainer)\n\n        this.initialize(config)\n\n        this.trackViews = []\n\n        this.constants = {\n            dragThreshold: 3,\n            scrollThreshold: 5,\n            defaultColor: \"rgb(0,0,150)\",\n            doubleClickDelay: config.doubleClickDelay || 500\n        }\n\n        // Map of event name -> [ handlerFn, ... ]\n        this.eventHandlers = {}\n\n        this.addMouseHandlers()\n\n        this.setControls(config)\n    }\n\n    initialize(config) {\n\n        if (config.gtex) {\n            GtexUtils.gtexLoaded = true\n        }\n        this.flanking = config.flanking\n        this.crossDomainProxy = config.crossDomainProxy\n        this.formats = config.formats\n        this.trackDefaults = config.trackDefaults\n        this.nucleotideColors = config.nucleotideColors || defaultNucleotideColors\n        for (let key of Object.keys(this.nucleotideColors)) {\n            this.nucleotideColors[key.toLowerCase()] = this.nucleotideColors[key]\n        }\n\n        this.trackLabelsVisible = config.showTrackLabels\n\n        this.roiTableVisible = config.showROITable\n        this.showROITableButton = config.showROITableButton\n\n        this.isCenterLineVisible = config.showCenterGuide\n\n        this.cursorGuideVisible = config.showCursorGuide\n\n        this.showSampleNames = config.showSampleNames\n        this.showSampleNameButton = config.showSampleNameButton\n        this.sampleNameViewportWidth = config.sampleNameViewportWidth || defaultSampleNameViewportWidth\n\n        if (config.search) {\n            this.searchConfig = {\n                type: \"json\",\n                url: config.search.url,\n                coords: config.search.coords === undefined ? 1 : config.search.coords,\n                chromosomeField: config.search.chromosomeField || \"chromosome\",\n                startField: config.search.startField || \"start\",\n                endField: config.search.endField || \"end\",\n                geneField: config.search.geneField || \"gene\",\n                snpField: config.search.snpField || \"snp\",\n                resultsField: config.search.resultsField\n            }\n        }\n    }\n\n    setControls(config) {\n\n        const $navBar = this.createStandardControls(config)\n        $navBar.insertBefore($(this.columnContainer))\n        this.$navigation = $navBar\n\n        if (false === config.showControls) {\n            $navBar.hide()\n        }\n\n    }\n\n    createStandardControls(config) {\n\n        this.navbarManager = new NavbarManager(this)\n\n        const $navBar = $('<div>', {class: 'igv-navbar'})\n        this.$navigation = $navBar\n\n        const $navbarLeftContainer = $('<div>', {class: 'igv-navbar-left-container'})\n        $navBar.append($navbarLeftContainer)\n\n        // IGV logo\n        const $logo = $('<div>', {class: 'igv-logo'})\n        $navbarLeftContainer.append($logo)\n\n        const logoSvg = logo()\n        logoSvg.css(\"width\", \"34px\")\n        logoSvg.css(\"height\", \"32px\")\n        $logo.append(logoSvg)\n\n        this.$current_genome = $('<div>', {class: 'igv-current-genome'})\n        $navbarLeftContainer.append(this.$current_genome)\n        this.$current_genome.text('')\n\n        const $genomicLocation = $('<div>', {class: 'igv-navbar-genomic-location'})\n        $navbarLeftContainer.append($genomicLocation)\n\n        // chromosome select widget\n        this.chromosomeSelectWidget = new ChromosomeSelectWidget(this, $genomicLocation.get(0))\n        if (undefined === config.showChromosomeWidget) {\n            config.showChromosomeWidget = true   // Default to true\n        }\n        if (true === config.showChromosomeWidget) {\n            this.chromosomeSelectWidget.show()\n        } else {\n            this.chromosomeSelectWidget.hide()\n        }\n\n        const $locusSizeGroup = $('<div>', {class: 'igv-locus-size-group'})\n        $genomicLocation.append($locusSizeGroup)\n\n        const $searchContainer = $('<div>', {class: 'igv-search-container'})\n        $locusSizeGroup.append($searchContainer)\n\n        // browser.$searchInput = $('<input type=\"text\" placeholder=\"Locus Search\">');\n        this.$searchInput = $('<input>', {class: 'igv-search-input', type: 'text', placeholder: 'Locus Search'})\n        $searchContainer.append(this.$searchInput)\n\n        this.$searchInput.change(() => this.doSearch(this.$searchInput.val()))\n\n        const searchIconContainer = DOMUtils.div({class: 'igv-search-icon-container'})\n        $searchContainer.append($(searchIconContainer))\n\n        searchIconContainer.appendChild(Icon.createIcon(\"search\"))\n\n        searchIconContainer.addEventListener('click', () => this.doSearch(this.$searchInput.val()))\n\n        this.windowSizePanel = new WindowSizePanel($locusSizeGroup.get(0), this)\n\n        const $navbarRightContainer = $('<div>', {class: 'igv-navbar-right-container'})\n        $navBar.append($navbarRightContainer)\n\n        const $toggle_button_container = $('<div class=\"igv-navbar-toggle-button-container\">')\n        $navbarRightContainer.append($toggle_button_container)\n        this.$toggle_button_container = $toggle_button_container\n\n        this.cursorGuide = new CursorGuide(this.columnContainer, this)\n\n        this.cursorGuideButton = new CursorGuideButton(this, $toggle_button_container.get(0))\n\n        this.centerLineButton = new CenterLineButton(this, $toggle_button_container.get(0))\n\n        this.setTrackLabelVisibility(config.showTrackLabels)\n        this.trackLabelControl = new TrackLabelControl($toggle_button_container.get(0), this)\n\n        // ROI Control\n        this.roiTableControl = new ROITableControl($toggle_button_container.get(0), this)\n\n        this.sampleNameControl = new SampleNameControl($toggle_button_container.get(0), this)\n\n        if (true === config.showSVGButton) {\n            this.svgSaveControl = new SVGSaveControl($toggle_button_container.get(0), this)\n        }\n\n        if (config.customButtons) {\n            for (let b of config.customButtons) {\n                new CustomButton($toggle_button_container.get(0), this, b)\n            }\n        }\n\n        this.zoomWidget = new ZoomWidget(this, $navbarRightContainer.get(0))\n\n        if (false === config.showNavigation) {\n            this.$navigation.hide()\n        }\n\n        this.inputDialog = new InputDialog(this.root)\n        this.inputDialog.container.id = `igv-input-dialog-${DOMUtils.guid()}`\n\n        this.dataRangeDialog = new DataRangeDialog(this, $(this.root))\n        this.dataRangeDialog.$container.get(0).id = `igv-data-range-dialog-${DOMUtils.guid()}`\n\n        this.genericColorPicker = new GenericColorPicker({parent: this.columnContainer, width: 432})\n        this.genericColorPicker.container.id = `igv-track-color-picker-${DOMUtils.guid()}`\n\n        return $navBar\n\n    }\n\n    getSampleNameViewportWidth() {\n        return false === this.showSampleNames ? 0 : this.sampleNameViewportWidth\n    }\n\n    isMultiLocusMode() {\n        return this.referenceFrameList && this.referenceFrameList.length > 1\n    };\n\n    addTrackToFactory(name, track) {\n        TrackFactory.addTrack(name, track)\n    }\n\n    isMultiLocusWholeGenomeView() {\n\n        if (undefined === this.referenceFrameList || 1 === this.referenceFrameList.length) {\n            return false\n        }\n\n        for (let referenceFrame of this.referenceFrameList) {\n            if ('all' === referenceFrame.chr.toLowerCase()) {\n                return true\n            }\n        }\n\n        return false\n    };\n\n    /**\n     * PUBLIC API FUNCTION\n     *\n     * Return the current genomic region as a locus string, or array of locus strings if in multi-locus view\n     * @returns {string|*[]|*}\n     */\n    currentLoci() {\n        const noCommaLocusString = (rf) => `${rf.chr}:${rf.start + 1}-${rf.end}`\n        if (undefined === this.referenceFrameList || 0 === this.referenceFrameList.length) {\n            return \"\"\n        } else if (1 === this.referenceFrameList.length) {\n            return noCommaLocusString(this.referenceFrameList[0])\n        } else {\n            return this.referenceFrameList.map(rf => noCommaLocusString(rf))\n        }\n    }\n\n    /**\n     * Render browse display as SVG\n     * @returns {string}\n     */\n    toSVG() {\n\n        const {y, width, height} = this.columnContainer.getBoundingClientRect()\n\n        const h_render = 8000\n\n        const config =\n            {\n\n                width,\n                height: h_render,\n\n                backdropColor: 'white',\n\n                multiLocusGap: 0,\n\n                viewbox:\n                    {\n                        x: 0,\n                        y: 0,\n                        width,\n                        height: h_render\n                    }\n\n            }\n\n        const context = new C2S(config)\n\n        // tracks -> SVG\n        const delta = {deltaX: 0, deltaY: -y}\n        for (let trackView of this.trackViews) {\n            trackView.renderSVGContext(context, delta)\n        }\n\n        this.roiManager.renderSVGContext(context, delta)\n\n        // reset height to trim away unneeded svg canvas real estate. Yes, a bit of a hack.\n        context.setHeight(height)\n\n        return context.getSerializedSvg(true)\n\n    }\n\n    renderSVG($container) {\n        const svg = this.toSVG()\n        $container.empty()\n        $container.append(svg)\n\n        return svg\n    }\n\n    saveSVGtoFile(config) {\n\n        let svg = this.toSVG()\n\n        if (config.$container) {\n            config.$container.empty()\n            config.$container.append(svg)\n        }\n\n        const path = config.filename || 'igvjs.svg'\n        const data = URL.createObjectURL(new Blob([svg], {type: \"application/octet-stream\"}))\n        FileUtils.download(path, data)\n    }\n\n    /**\n     * Initialize a session from an object, json, or by loading from a file.\n     *\n     * TODO Really should be split into at least 2 functions, load from file and load from object/json\n     *\n     * @param options\n     * @returns {*}\n     */\n    async loadSession(options) {\n\n        // TODO: depricated\n        this.roiSets = []\n\n        let session\n        if (options.url || options.file) {\n            session = await loadSessionFile(options)\n        } else {\n            session = options\n        }\n        return this.loadSessionObject(session)\n\n\n        async function loadSessionFile(options) {\n\n            const urlOrFile = options.url || options.file\n\n            if (options.url && (options.url.startsWith(\"blob:\") || options.url.startsWith(\"data:\"))) {\n                const json = Browser.uncompressSession(options.url)\n                return JSON.parse(json)\n\n            } else {\n                let filename = options.filename\n                if (!filename) {\n                    filename = (options.url ? await getFilename(options.url) : options.file.name)\n                }\n\n                if (filename.endsWith(\".xml\")) {\n\n                    const knownGenomes = GenomeUtils.KNOWN_GENOMES\n                    const string = await igvxhr.loadString(urlOrFile)\n                    return new XMLSession(string, knownGenomes)\n\n                } else if (filename.endsWith(\".json\")) {\n                    return igvxhr.loadJson(urlOrFile)\n                } else {\n                    return undefined\n                }\n            }\n        }\n    }\n\n\n    /**\n     * Note:  public API function\n     * @param session\n     * @returns {Promise<void>}\n     */\n    async loadSessionObject(session) {\n\n        // prepare to load a new session, discarding DOM and state\n        this.cleanHouseForSession()\n\n        this.showSampleNames = session.showSampleNames || false\n        this.sampleNameControl.setState(this.showSampleNames === true)\n\n        if (session.sampleNameViewportWidth) {\n            this.sampleNameViewportWidth = session.sampleNameViewportWidth\n        }\n\n        // axis column\n        createColumn(this.columnContainer, 'igv-axis-column')\n\n        // SampleName column\n        createColumn(this.columnContainer, 'igv-sample-name-column')\n\n        // Track scrollbar column\n        createColumn(this.columnContainer, 'igv-scrollbar-column')\n\n        // Track drag/reorder column\n        createColumn(this.columnContainer, 'igv-track-drag-column')\n\n        // Track gear column\n        createColumn(this.columnContainer, 'igv-gear-menu-column')\n\n        const genomeOrReference = session.reference || session.genome\n        if(!genomeOrReference) {\n            console.warn(\"No genome or reference object specified\")\n            return;\n        }\n        const genomeConfig = await GenomeUtils.expandReference(this.alert, genomeOrReference)\n\n\n        await this.loadReference(genomeConfig, session.locus)\n\n        this.centerLineList = this.createCenterLineList(this.columnContainer)\n\n        // Create ideogram and ruler track.  Really this belongs in browser initialization, but creation is\n        // deferred because ideogram and ruler are treated as \"tracks\", and tracks require a reference frame\n        let ideogramHeight = 0\n        if (false !== session.showIdeogram) {\n\n            const track = new IdeogramTrack(this)\n            track.id = 'ideogram'\n\n            const trackView = new TrackView(this, this.columnContainer, track)\n            const {$viewport} = trackView.viewports[0]\n            ideogramHeight = getElementAbsoluteHeight($viewport.get(0))\n\n            this.trackViews.push(trackView)\n        }\n\n        if (false !== session.showRuler) {\n            this.trackViews.push(new TrackView(this, this.columnContainer, new RulerTrack(this)))\n        }\n\n        // Restore gtex selections.\n        if (session.gtexSelections) {\n            for (let referenceFrame of this.referenceFrameList) {\n                for (let s of Object.keys(session.gtexSelections)) {\n                    const gene = session.gtexSelections[s].gene\n                    const snp = session.gtexSelections[s].snp\n                    referenceFrame.selection = new GtexSelection(gene, snp)\n                }\n            }\n        }\n\n        if (this.roiManager) {\n            this.roiManager.dispose()\n        }\n\n        const roiMenu = new ROIMenu(this, this.columnContainer)\n        const roiTableConfig =\n            {\n                browser: this,\n                parent: this.columnContainer,\n                headerTitle: 'Regions of Interest',\n                dismissHandler: () => this.roiTableControl.buttonHandler(false),\n                gotoButtonHandler: ROITable.gotoButtonHandler\n            }\n        if (session.roi) {\n\n            const roiSetList = session.roi.map(c => new ROISet(c, this.genome))\n\n            const named = roiSetList.filter(({name}) => name !== undefined && name.length > 0)\n\n            roiTableConfig.columnFormat = ROITable.getColumnFormatConfiguration(named.length > 0)\n\n            const roiTable = new ROITable(roiTableConfig)\n\n            this.roiManager = new ROIManager(this, roiMenu, roiTable, ideogramHeight, roiSetList)\n        } else {\n\n            roiTableConfig.columnFormat = ROITable.getColumnFormatConfiguration(false)\n\n            const roiTable = new ROITable(roiTableConfig)\n\n            this.roiManager = new ROIManager(this, roiMenu, roiTable, ideogramHeight, undefined)\n        }\n\n        await this.roiManager.initialize()\n\n        // Tracks.  Start with genome tracks, if any, then append session tracks\n        const genomeTracks = genomeConfig.tracks || []\n        const trackConfigurations = session.tracks ? genomeTracks.concat(session.tracks) : genomeTracks\n\n        // Ensure that we always have a sequence track with no explicit URL (=> the reference genome sequence track)\n        const pushSequenceTrack = trackConfigurations.filter(track => 'sequence' === track.type && !track.url && !track.fastaURL).length === 0\n        if (pushSequenceTrack /*&& false !== this.config.showSequence*/) {\n            trackConfigurations.push({type: \"sequence\", order: defaultSequenceTrackOrder})\n        }\n\n        // Maintain track order unless explicitly set\n        let trackOrder = 1\n        for (let t of trackConfigurations) {\n            if (undefined === t.order) {\n                t.order = trackOrder++\n            }\n        }\n\n        await this.loadTrackList(trackConfigurations)\n\n        // The ruler and ideogram tracks are not explicitly loaded, but needs updated nonetheless.\n        for (let rtv of this.trackViews.filter((tv) => tv.track.type === 'ruler' || tv.track.type === 'ideogram')) {\n            rtv.updateViews()\n        }\n\n        this.updateUIWithReferenceFrameList()\n\n    }\n\n    createCenterLineList(columnContainer) {\n\n        const centerLines = columnContainer.querySelectorAll('.igv-center-line')\n        for (let i = 0; i < centerLines.length; i++) {\n            centerLines[i].remove()\n        }\n\n        const centerLineList = []\n        const viewportColumns = columnContainer.querySelectorAll('.igv-column')\n        for (let i = 0; i < viewportColumns.length; i++) {\n            centerLineList.push(new ViewportCenterLine(this, this.referenceFrameList[i], viewportColumns[i]))\n        }\n\n        return centerLineList\n    }\n\n    /**\n     * Load a reference genome object.  This includes the fasta, and optional cytoband, but no tracks.  This method\n     * is used by loadGenome and loadSession.\n     *\n     * @param genomeConfig\n     * @param initialLocus\n     */\n    async loadReference(genomeConfig, initialLocus) {\n\n        const genome = await GenomeUtils.loadGenome(genomeConfig)\n\n        const genomeChange = undefined === this.genome || (this.genome.id !== genome.id)\n\n        this.genome = genome\n\n        this.updateNavbarDOMWithGenome(genome)\n\n        if (genomeChange) {\n            this.removeAllTracks()\n        }\n\n        let locus = getInitialLocus(initialLocus, genome)\n        const locusFound = await this.search(locus, true)\n        if (!locusFound) {\n            console.log(\"Initial locus not found: \" + locus)\n            locus = genome.getHomeChromosomeName()\n            const locusFound = await this.search(locus, true)\n            if (!locusFound) {\n                throw new Error(\"Cannot set initial locus\")\n            }\n        }\n\n        if (genomeChange && this.circularView) {\n            this.circularView.setAssembly({\n                name: this.genome.id,\n                id: this.genome.id,\n                chromosomes: makeCircViewChromosomes(this.genome)\n            })\n        }\n    }\n\n    cleanHouseForSession() {\n\n        for (let trackView of this.trackViews) {\n            // empty axis column, viewport columns, sampleName column, scroll column, drag column, gear column\n            trackView.removeDOMFromColumnContainer()\n        }\n\n        // discard all columns\n        const elements = this.columnContainer.querySelectorAll('.igv-axis-column, .igv-column-shim, .igv-column, .igv-sample-name-column, .igv-scrollbar-column, .igv-track-drag-column, .igv-gear-menu-column')\n        elements.forEach(column => column.remove())\n\n        this.trackViews = []\n\n        if (this.circularView) {\n            this.circularView.clearChords()\n        }\n\n    }\n\n    updateNavbarDOMWithGenome(genome) {\n\n        // If the genome is defined directly from a fasta file or data url the \"id\" will be the full url.  Don't display\n        // this.\n        let genomeLabel = (genome.id && genome.id.length < 10 ? genome.id : '')\n        this.$current_genome.text(genomeLabel)\n        this.$current_genome.attr('title', genome.id || '')\n        this.chromosomeSelectWidget.update(genome)\n    }\n\n    /**\n     * Load a genome, defined by a string ID or a json-like configuration object. This includes a fasta reference\n     * as well as optional cytoband and annotation tracks.\n     *\n     * @param idOrConfig\n     * @returns genome\n     */\n    async loadGenome(idOrConfig) {\n\n        const genomeConfig = await GenomeUtils.expandReference(this.alert, idOrConfig)\n        await this.loadReference(genomeConfig, undefined)\n\n        const tracks = genomeConfig.tracks || []\n\n        // Insure that we always have a sequence track\n        const pushSequenceTrack = tracks.filter(track => track.type === 'sequence').length === 0\n        if (pushSequenceTrack) {\n            tracks.push({type: \"sequence\", order: defaultSequenceTrackOrder})\n        }\n\n        await this.loadTrackList(tracks)\n\n        await this.updateViews()\n\n        return this.genome\n    }\n\n    /**\n     * Called after a session load, search, pan (horizontal drag), or resize\n     *\n     * @param referenceFrameList\n     */\n    updateUIWithReferenceFrameList() {\n\n        const referenceFrameList = this.referenceFrameList\n\n        this.updateLocusSearchWidget()\n\n        const isWGV = (this.isMultiLocusWholeGenomeView() || GenomeUtils.isWholeGenomeView(referenceFrameList[0].chr))\n\n        this.navbarManager.navbarDidResize(this.$navigation.width(), isWGV)\n\n        toggleTrackLabels(this.trackViews, this.trackLabelsVisible)\n\n        this.setCenterLineAndCenterLineButtonVisibility(!GenomeUtils.isWholeGenomeView(referenceFrameList[0].chr))\n\n    }\n\n    setTrackLabelVisibility(isVisible) {\n        toggleTrackLabels(this.trackViews, isVisible)\n    }\n\n    setROITableVisibility(isVisible) {\n        true === isVisible ? this.roiManager.presentTable() : this.roiManager.dismissTable()\n    }\n\n    // cursor guide\n    setCursorGuideVisibility(cursorGuideVisible) {\n\n        if (cursorGuideVisible) {\n            this.cursorGuide.show()\n        } else {\n            this.cursorGuide.hide()\n        }\n    }\n\n    setCustomCursorGuideMouseHandler(mouseHandler) {\n        this.cursorGuide.customMouseHandler = mouseHandler\n    }\n\n    // center line\n    setCenterLineVisibility(isCenterLineVisible) {\n        for (let centerLine of this.centerLineList) {\n            if (true === isCenterLineVisible) {\n                centerLine.show()\n                centerLine.repaint()\n            } else {\n                centerLine.hide()\n            }\n        }\n    }\n\n    setCenterLineAndCenterLineButtonVisibility(isCenterLineVisible) {\n\n        for (let centerLine of this.centerLineList) {\n            const isShown = isCenterLineVisible && centerLine.isVisible\n            isShown ? centerLine.show() : centerLine.container.style.display = 'none'\n        }\n\n        const isShown = isCenterLineVisible && this.centerLineButton.isVisible\n        isShown ? this.centerLineButton.show() : this.centerLineButton.button.style.display = 'none'\n\n    }\n\n    /**\n     * Public API function. Load a list of tracks.\n     *\n     * @param configList  Array of track configurations\n     * @returns {Promise<*>}  Promise for track objects\n     */\n    async loadTrackList(configList) {\n\n        const promises = []\n        for (let config of configList) {\n            promises.push(this._loadTrack(config))\n        }\n\n        const loadedTracks = await Promise.all(promises)\n        const groupAutoscaleViews = this.trackViews.filter(function (trackView) {\n            return trackView.track.autoscaleGroup\n        })\n        if (groupAutoscaleViews.length > 0) {\n            this.updateViews()\n        }\n        return loadedTracks\n    }\n\n    /**\n     * Public API function\n     *\n     * Load an individual track.  If part of an autoscale group force a general update\n     *\n     * @param config  A track configuration\n     * @returns {Promise<*>}  Promise for track object\n     */\n    async loadTrack(config) {\n\n        const newTrack = this._loadTrack(config)\n\n        if (config.autoscaleGroup) {\n            // Await newTrack load and update all views\n            await newTrack\n            this.updateViews()\n        }\n\n        return newTrack\n    }\n\n    /**\n     * Return a promise to load a track.   Private function used by loadTrack() and loadTrackList()\n     *\n     * @param config\n     * @returns {*}\n     */\n\n    async _loadTrack(config) {\n\n        // config might be json\n        if (StringUtils.isString(config)) {\n            config = JSON.parse(config)\n        }\n\n        try {\n\n            const newTrack = await this.createTrack(config)\n\n            if (undefined === newTrack) {\n                return\n            }\n\n            // Set order field of track here.  Otherwise track order might get shuffled during asynchronous load\n            if (undefined === newTrack.order) {\n                newTrack.order = this.trackViews.length\n            }\n\n            const trackView = new TrackView(this, this.columnContainer, newTrack)\n            this.trackViews.push(trackView)\n            toggleTrackLabels(this.trackViews, this.trackLabelsVisible)\n            this.reorderTracks()\n            this.fireEvent('trackorderchanged', [this.getTrackOrder()])\n\n            if (typeof newTrack.postInit === 'function') {\n                try {\n                    trackView.startSpinner()\n                    await newTrack.postInit()\n                } finally {\n                    trackView.stopSpinner()\n                }\n            }\n\n            if (!newTrack.autoscaleGroup) {\n                // Group autoscale will get updated later (as a group)\n                if (config.sync) {\n                    await trackView.updateViews()\n                } else {\n                    trackView.updateViews()\n                }\n            }\n\n            if (typeof newTrack.hasSamples === 'function' && newTrack.hasSamples()) {\n                if (this.config.showSampleNameButton !== false) {\n                    this.sampleNameControl.show()   // If not explicitly set\n                }\n            }\n\n            return newTrack\n\n        } catch (error) {\n            const httpMessages =\n                {\n                    \"401\": \"Access unauthorized\",\n                    \"403\": \"Access forbidden\",\n                    \"404\": \"Not found\"\n                }\n            console.error(error)\n            let msg = error.message || error.error || error.toString()\n            if (httpMessages.hasOwnProperty(msg)) {\n                msg = httpMessages[msg]\n            }\n            msg += (\": \" + config.url)\n            this.alert.present(new Error(msg), undefined)\n        }\n    }\n\n    /**\n     * Public API function - load a region of interest\n     *\n     * @param config  A \"track\" configuration object, or array of objects,  of type == \"annotation\" (bed, gff, etc)\n     *\n     * @returns {Promise<void>}\n     */\n    async loadROI(config) {\n        await this.roiManager.loadROI(config, this.genome)\n    }\n\n    /**\n     * Public API function - clear all regions of interest (ROI), including preloaded and user-defined ROIs\n     */\n    clearROIs() {\n        this.roiManager.clearROIs()\n    }\n\n    /**\n     * Public API function. Return a promise for the list of user-defined regions-of-interest\n     */\n    async getUserDefinedROIs() {\n\n        if (this.roiManager) {\n\n            const set = await this.roiManager.getUserDefinedROISet()\n            if (undefined === set) {\n                return []\n            }\n\n            const featureHash = await set.getAllFeatures()\n            const featureList = []\n            for (let value of Object.values(featureHash)) {\n                featureList.push(...value)\n            }\n\n            return featureList\n\n        } else {\n            return []\n        }\n    }\n\n    getRulerTrackView() {\n        const list = this.trackViews.filter(({track}) => 'ruler' === track.id)\n        return list.length > 0 ? list[0] : undefined\n    }\n\n    /**\n     * Create a Track object.\n     * @param config\n     * @returns {Promise<*>}\n     */\n    async createTrack(config) {\n\n        // Resolve function and promise urls\n        let url = await URIUtils.resolveURL(config.url || config.fastaURL)\n        if (StringUtils.isString(url)) {\n            url = url.trim()\n        }\n\n        if (url) {\n            if (config.format) {\n                config.format = config.format.toLowerCase()\n            } else if (config.fastaURL) {\n                config.format = \"fasta\"  // by definition\n            } else {\n                let filename = config.filename\n                if (!filename) {\n                    filename = await getFilename(url)\n                }\n\n                const format = TrackUtils.inferFileFormat(filename)\n\n                if (\"tsv\" === format) {\n                    config.format = await TrackUtils.inferFileFormatFromHeader(config)\n                } else if (format) {\n                    config.format = format\n                } else {\n                    if (config.sourceType === \"htsget\") {\n                        // Check for htsget URL.  This is a longshot\n                        await HtsgetReader.inferFormat(config)\n                    }\n                }\n            }\n        }\n\n\n        let type = config.type ? config.type.toLowerCase() : undefined\n\n        if (!type) {\n            type = TrackUtils.inferTrackType(config)\n            if (\"bedtype\" === type) {\n                // Bed files must be read to determine track type\n                const featureSource = FeatureSource(config, this.genome)\n                config._featureSource = featureSource    // This is a temp variable, bit of a hack\n                const trackType = await featureSource.trackType()\n                if (trackType) {\n                    type = trackType\n                } else {\n                    type = \"annotation\"\n                }\n            }\n            // Record in config to make type persistent in session\n            config.type = type\n        }\n\n        // Set defaults if specified\n        if (this.trackDefaults && type) {\n            const settings = this.trackDefaults[type]\n            if (settings) {\n                for (let property in settings) {\n                    if (settings.hasOwnProperty(property) && config[property] === undefined) {\n                        config[property] = settings[property]\n                    }\n                }\n            }\n        }\n\n        const track = TrackFactory.getTrack(type, config, this)\n        if (undefined === track) {\n            this.alert.present(new Error(`Error creating track.  Could not determine track type for file: ${config.url || config}`), undefined)\n        } else {\n\n            if (config.roi && config.roi.length > 0) {\n                track.roiSets = config.roi.map(r => new TrackROISet(r, this.genome))\n            }\n\n            return track\n        }\n    }\n\n\n    reorderTracks() {\n\n        this.trackViews.sort(function (a, b) {\n\n            const firstSortOrder = tv => {\n                return 'ideogram' === tv.track.id ? 1 :\n                    'ruler' === tv.track.id ? 2 :\n                        3\n            }\n\n            const aOrder1 = firstSortOrder(a)\n            const bOrder1 = firstSortOrder(b)\n            if (aOrder1 === bOrder1) {\n                const aOrder2 = a.track.order || 0\n                const bOrder2 = b.track.order || 0\n                return aOrder2 - bOrder2\n            } else {\n                return aOrder1 - bOrder1\n            }\n        })\n\n        // discard current track order\n        for (let {axis, viewports, sampleNameViewport, outerScroll, dragHandle, gearContainer} of this.trackViews) {\n\n            axis.remove()\n\n            for (let {$viewport} of viewports) {\n                $viewport.detach()\n            }\n\n            sampleNameViewport.viewport.remove()\n\n            outerScroll.remove()\n            dragHandle.remove()\n            gearContainer.remove()\n        }\n\n        // Reattach the divs to the dom in the correct order\n        const viewportColumns = this.columnContainer.querySelectorAll('.igv-column')\n\n        for (let {axis, viewports, sampleNameViewport, outerScroll, dragHandle, gearContainer} of this.trackViews) {\n\n            this.columnContainer.querySelector('.igv-axis-column').appendChild(axis)\n\n            for (let i = 0; i < viewportColumns.length; i++) {\n                const {$viewport} = viewports[i]\n                viewportColumns[i].appendChild($viewport.get(0))\n            }\n\n            this.columnContainer.querySelector('.igv-sample-name-column').appendChild(sampleNameViewport.viewport)\n\n            this.columnContainer.querySelector('.igv-scrollbar-column').appendChild(outerScroll)\n\n            this.columnContainer.querySelector('.igv-track-drag-column').appendChild(dragHandle)\n\n            this.columnContainer.querySelector('.igv-gear-menu-column').appendChild(gearContainer)\n        }\n\n    }\n\n    getTrackOrder() {\n        return this.trackViews.filter(tv => tv.track && tv.track.name).map(tv => tv.track.name)\n    }\n\n    /**\n     * NOTE: Public API function\n     *\n     * Remove all tracks matching the given name.  Usually this will be a single track, but there is no\n     * guarantee names are unique\n     *\n     * @param name\n     */\n    removeTrackByName(name) {\n        const copy = this.trackViews.slice()\n        for (let trackView of copy) {\n            if (name === trackView.track.name) {\n                this.removeTrack(trackView.track)\n            }\n        }\n    }\n\n    /**\n     * NOTE: Public API function\n     *\n     * Remove the given track.  If it has already been removed this is a no-op.\n     *\n     * @param track\n     */\n    removeTrack(track) {\n        for (let trackView of this.trackViews) {\n            if (track === trackView.track) {\n                this._removeTrack(trackView.track)\n                break\n            }\n        }\n    }\n\n    _removeTrack(track) {\n        if (track.disposed) return\n        this.trackViews.splice(this.trackViews.indexOf(track.trackView), 1)\n        this.fireEvent('trackremoved', [track])\n        this.fireEvent('trackorderchanged', [this.getTrackOrder()])\n        if (track.trackView) {\n            track.trackView.dispose()\n        }\n    }\n\n    /**\n     * API function\n     */\n    removeAllTracks() {\n\n        const remainingTrackViews = []\n\n        for (let trackView of this.trackViews) {\n\n            if (trackView.track.id !== 'ruler' && trackView.track.id !== 'ideogram') {\n                this.fireEvent('trackremoved', [trackView.track])\n                trackView.dispose()\n            } else {\n                remainingTrackViews.push(trackView)\n            }\n        }\n\n        this.trackViews = remainingTrackViews\n    }\n\n    /**\n     *\n     * @param property\n     * @param value\n     * @returns {Array}  tracks with given property value.  e.g. findTracks(\"type\", \"annotation\")\n     */\n    findTracks(property, value) {\n\n        let f = typeof property === 'function' ?\n            trackView => property(trackView.track) :\n            trackView => value === trackView.track[property]\n\n        return this.trackViews.filter(f).map(tv => tv.track)\n    }\n\n    /**\n     * Set the track height globally for all tracks.  (Note: Its not clear why this is useful).\n     * @param newHeight\n     */\n    setTrackHeight(newHeight) {\n\n        this.trackHeight = newHeight\n\n        this.trackViews.forEach(function (trackView) {\n            trackView.setTrackHeight(newHeight)\n        })\n\n    }\n\n    /**\n     * API function to signal that this browser visibility has changed, e.g. from hiding/showing in a tab interface.\n     *\n     * @returns {Promise<void>}\n     */\n    async visibilityChange() {\n        this.layoutChange()\n    }\n\n    async layoutChange() {\n\n        const status = this.referenceFrameList.find(referenceFrame => referenceFrame.bpPerPixel < 0)\n\n        if (status) {\n            const viewportWidth = this.calculateViewportWidth(this.referenceFrameList.length)\n            for (let referenceFrame of this.referenceFrameList) {\n                referenceFrame.bpPerPixel = (referenceFrame.end - referenceFrame.start) / viewportWidth\n            }\n        }\n\n        if (this.referenceFrameList) {\n            const isWGV = this.isMultiLocusWholeGenomeView() || GenomeUtils.isWholeGenomeView(this.referenceFrameList[0].chr)\n            this.navbarManager.navbarDidResize(this.$navigation.width(), isWGV)\n        }\n\n        resize.call(this)\n        await this.updateViews()\n    }\n\n    async updateViews() {\n\n        const trackViews = this.trackViews\n\n        this.updateLocusSearchWidget()\n\n        for (let centerGuide of this.centerLineList) {\n            centerGuide.repaint()\n        }\n\n        // Don't autoscale while dragging.\n        if (this.dragObject) {\n            for (let trackView of trackViews) {\n                await trackView.updateViews()\n            }\n        } else {\n            // Group autoscale\n            const groupAutoscaleTracks = {}\n            const otherTracks = []\n            for (let trackView of trackViews) {\n                const group = trackView.track.autoscaleGroup\n                if (group) {\n                    var l = groupAutoscaleTracks[group]\n                    if (!l) {\n                        l = []\n                        groupAutoscaleTracks[group] = l\n                    }\n                    l.push(trackView)\n                } else {\n                    otherTracks.push(trackView)\n                }\n            }\n\n            if (Object.entries(groupAutoscaleTracks).length > 0) {\n\n                const keys = Object.keys(groupAutoscaleTracks)\n                for (let group of keys) {\n\n                    const groupTrackViews = groupAutoscaleTracks[group]\n                    const promises = []\n\n                    for (let trackView of groupTrackViews) {\n                        promises.push(trackView.getInViewFeatures())\n                    }\n\n                    const featureArray = await Promise.all(promises)\n\n                    var allFeatures = [], dataRange\n\n                    for (let features of featureArray) {\n                        allFeatures = allFeatures.concat(features)\n                    }\n                    dataRange = doAutoscale(allFeatures)\n\n                    const p = []\n                    for (let trackView of groupTrackViews) {\n                        trackView.track.dataRange = dataRange\n                        trackView.track.autoscale = false\n                        p.push(trackView.updateViews())\n                    }\n                    await Promise.all(p)\n                }\n\n            }\n\n            await Promise.all(otherTracks.map(tv => tv.updateViews()))\n            // for (let trackView of otherTracks) {\n            //     await trackView.updateViews(force);\n            // }\n        }\n\n    }\n\n    repaintViews() {\n        for (let trackView of this.trackViews) {\n            trackView.repaintViews()\n        }\n    }\n\n    updateLocusSearchWidget() {\n\n        if(!this.referenceFrameList) return\n        const referenceFrameList = this.referenceFrameList\n\n        // Update end position of reference frames based on pixel widths.  This is hacky, but its been done here\n        // for a long time, although indirectly.\n        const width = this.calculateViewportWidth(this.referenceFrameList.length)\n        for (let referenceFrame of referenceFrameList) {\n            referenceFrame.end = referenceFrame.start + referenceFrame.bpPerPixel * width\n        }\n\n        this.chromosomeSelectWidget.select.value = referenceFrameList.length === 1 ? this.referenceFrameList[0].chr : ''\n\n        const loc = this.referenceFrameList.map(rf => rf.getLocusString()).join(' ')\n        //const loc = this.referenceFrameList.length === 1 ?   this.referenceFrameList[0].getLocusString() : '';\n        this.$searchInput.val(loc)\n\n        this.fireEvent('locuschange', [this.referenceFrameList])\n    }\n\n    calculateViewportWidth(columnCount) {\n\n        let {width} = this.columnContainer.getBoundingClientRect()\n\n        const sampleNameViewportWidth = this.getSampleNameViewportWidth()\n\n        width -= igv_axis_column_width + sampleNameViewportWidth + igv_scrollbar_outer_width + igv_track_manipulation_handle_width + igv_track_gear_menu_column_width\n\n        width -= column_multi_locus_shim_width * (columnCount - 1)\n\n        return Math.floor(width / columnCount)\n    }\n\n    getCenterLineXOffset() {\n        let {width: columnContainerWidth} = this.columnContainer.getBoundingClientRect()\n        columnContainerWidth -= igv_axis_column_width + this.getSampleNameViewportWidth() + igv_scrollbar_outer_width + igv_track_manipulation_handle_width + igv_track_gear_menu_column_width\n        return Math.floor(columnContainerWidth / 2 + igv_axis_column_width)\n    }\n\n    minimumBases() {\n        return this.config.minimumBases\n    }\n\n    // Zoom in by a factor of 2, keeping the same center location\n    zoomIn() {\n        this.zoomWithScaleFactor(0.5)\n    };\n\n    // Zoom out by a factor of 2, keeping the same center location if possible\n    zoomOut() {\n        this.zoomWithScaleFactor(2.0)\n    };\n\n    async zoomWithScaleFactor(scaleFactor, centerBPOrUndefined, referenceFrameOrUndefined) {\n\n        if(!this.referenceFrameList) return\n\n        const viewportWidth = this.calculateViewportWidth(this.referenceFrameList.length)\n\n        let referenceFrames = referenceFrameOrUndefined ? [referenceFrameOrUndefined] : this.referenceFrameList\n\n        for (let referenceFrame of referenceFrames) {\n            referenceFrame.zoomWithScaleFactor(this, scaleFactor, viewportWidth, centerBPOrUndefined)\n        }\n    }\n\n    /**\n     * Add a new multi-locus panel for the specified region\n     * @param chr\n     * @param start\n     * @param end\n     * @param referenceFrameLeft - optional, if supplied new panel should be placed to the immediate right\n     */\n    async addMultiLocusPanel(chr, start, end, referenceFrameLeft) {\n\n        if(!this.referenceFrameList) return\n\n        // account for reduced viewport width as a result of adding right mate pair panel\n        const viewportWidth = this.calculateViewportWidth(1 + this.referenceFrameList.length)\n        const scaleFactor = this.calculateViewportWidth(this.referenceFrameList.length) / this.calculateViewportWidth(1 + this.referenceFrameList.length)\n        for (let refFrame of this.referenceFrameList) {\n            refFrame.bpPerPixel *= scaleFactor\n        }\n\n        const bpp = (end - start) / viewportWidth\n        const newReferenceFrame = new ReferenceFrame(this.genome, chr, start, end, bpp)\n        const indexLeft = referenceFrameLeft ? this.referenceFrameList.indexOf(referenceFrameLeft) : this.referenceFrameList.length - 1\n        const indexRight = 1 + indexLeft\n\n        // TODO -- this is really ugly\n        const {$viewport} = this.trackViews[0].viewports[indexLeft]\n        const viewportColumn = viewportColumnManager.insertAfter($viewport.get(0).parentElement)\n\n        if (indexRight === this.referenceFrameList.length) {\n            this.referenceFrameList.push(newReferenceFrame)\n            for (let trackView of this.trackViews) {\n                const viewport = createViewport(trackView, viewportColumn, newReferenceFrame)\n                trackView.viewports.push(viewport)\n            }\n        } else {\n            this.referenceFrameList.splice(indexRight, 0, newReferenceFrame)\n            for (let trackView of this.trackViews) {\n                const viewport = createViewport(trackView, viewportColumn, newReferenceFrame)\n                trackView.viewports.splice(indexRight, 0, viewport)\n            }\n        }\n\n\n        this.centerLineList = this.createCenterLineList(this.columnContainer)\n\n        resize.call(this)\n        await this.updateViews(true)\n    }\n\n    async removeMultiLocusPanel(referenceFrame) {\n\n        // find the $column corresponding to this referenceFrame and remove it\n        const index = this.referenceFrameList.indexOf(referenceFrame)\n        const {$viewport} = this.trackViews[0].viewports[index]\n        viewportColumnManager.removeColumnAtIndex(index, $viewport.parent().get(0))\n\n        for (let {viewports} of this.trackViews) {\n            viewports[index].dispose()\n            viewports.splice(index, 1)\n        }\n\n        this.referenceFrameList.splice(index, 1)\n\n        if (1 === this.referenceFrameList.length && this.getRulerTrackView()) {\n            for (let rulerViewport of this.getRulerTrackView().viewports) {\n                rulerViewport.dismissLocusLabel()\n            }\n        }\n\n        const scaleFactor = this.calculateViewportWidth(1 + this.referenceFrameList.length) / this.calculateViewportWidth(this.referenceFrameList.length)\n\n        await this.rescaleForMultiLocus(scaleFactor)\n\n    }\n\n    /**\n     * Goto the locus represented by the selected referenceFrame, discarding all other panels\n     *\n     * @param referenceFrame\n     * @returns {Promise<void>}\n     */\n    async gotoMultilocusPanel(referenceFrame) {\n\n        const referenceFrameIndex = this.referenceFrameList.indexOf(referenceFrame)\n\n        // Remove columns for unselected panels\n        this.columnContainer.querySelectorAll('.igv-column').forEach((column, c) => {\n            if (c === referenceFrameIndex) {\n                // do nothing\n            } else {\n                column.remove()\n            }\n        })\n\n        // Remove all column shims\n        this.columnContainer.querySelectorAll('.igv-column-shim').forEach(shim => shim.remove())\n\n        // Discard viewports\n        for (let trackView of this.trackViews) {\n            const retain = trackView.viewports[referenceFrameIndex]\n            trackView.viewports.filter((viewport, i) => i !== referenceFrameIndex).forEach(viewport => viewport.dispose())\n            trackView.viewports = [retain]\n        }\n\n        const viewportWidth = this.calculateViewportWidth(1)\n        referenceFrame.bpPerPixel = (referenceFrame.end - referenceFrame.start) / viewportWidth\n        this.referenceFrameList = [referenceFrame]\n\n        this.trackViews.forEach(({viewports}) => viewports.forEach(viewport => viewport.setWidth(viewportWidth)))\n\n        this.centerLineList = this.createCenterLineList(this.columnContainer)\n\n        this.updateUIWithReferenceFrameList()\n\n        await this.updateViews(true)\n\n    }\n\n    async rescaleForMultiLocus(scaleFactor) {\n\n        const viewportWidth = this.calculateViewportWidth(this.referenceFrameList.length)\n\n        for (let referenceFrame of this.referenceFrameList) {\n            referenceFrame.bpPerPixel *= scaleFactor\n        }\n\n        for (let {viewports} of this.trackViews) {\n\n            for (let viewport of viewports) {\n                viewport.setWidth(viewportWidth)\n            }\n        }\n\n        this.centerLineList = this.createCenterLineList(this.columnContainer)\n\n        this.updateUIWithReferenceFrameList()\n\n        await this.updateViews()\n\n    }\n\n    /**\n     * @deprecated  This is a deprecated method with no known usages.  To be removed in a future release.\n     */\n    async goto(chr, start, end) {\n        await this.search(chr + \":\" + start + \"-\" + end)\n    }\n\n    /**\n\n     * Search for the locus string -- this function is called from various igv.js GUI elements, and is not part of the\n     * API.  Wraps ```search``` and presents an error dialog if false.\n     *\n     * @param string\n     * @param init\n     * @returns {Promise<void>}\n     */\n    async doSearch(string, init) {\n        const success = await this.search(string, init)\n        if (!success) {\n            this.alert.present(new Error(`Unrecognized locus: <b> ${string} </b>`))\n        }\n        return success\n    }\n\n\n    /**\n     * Search for the locus string\n     * NOTE: This is part of the API\n     * @param string\n     * @param init  true if called during browser initialization\n     * @returns {Promise<boolean>}  true if found, false if not\n     */\n    async search(string, init) {\n\n        const loci = await search(this, string)\n\n        if (loci && loci.length > 0) {\n\n            // create reference frame list based on search loci\n            this.referenceFrameList = createReferenceFrameList(loci, this.genome, this.flanking, this.minimumBases(), this.calculateViewportWidth(loci.length), this.isSoftclipped())\n\n            // discard viewport DOM elements\n            for (let trackView of this.trackViews) {\n                // empty axis column, viewport columns, sampleName column, scroll column, drag column, gear column\n                trackView.removeDOMFromColumnContainer()\n            }\n\n            // discard ONLY viewport columns\n            this.columnContainer.querySelectorAll('.igv-column-shim, .igv-column').forEach(el => el.remove())\n\n            // Insert viewport columns preceding the sample-name column\n            viewportColumnManager.insertBefore(this.columnContainer.querySelector('.igv-sample-name-column'), this.referenceFrameList.length)\n\n            this.centerLineList = this.createCenterLineList(this.columnContainer)\n\n            // Populate the columns\n            for (let trackView of this.trackViews) {\n                trackView.addDOMToColumnContainer(this, this.columnContainer, this.referenceFrameList)\n            }\n\n            this.updateUIWithReferenceFrameList()\n\n            if (!init) {\n                await this.updateViews()\n            }\n            return true\n        } else {\n            return false\n        }\n    }\n\n    async loadSampleInformation(url) {\n        var name = url\n        if (FileUtils.isFile(url)) {\n            name = url.name\n        }\n        var ext = name.substr(name.lastIndexOf('.') + 1)\n        if (ext === 'fam') {\n            this.sampleInformation = await loadPlinkFile(url)\n        }\n    };\n\n// EVENTS\n\n    on(eventName, fn) {\n        if (!this.eventHandlers[eventName]) {\n            this.eventHandlers[eventName] = []\n        }\n        this.eventHandlers[eventName].push(fn)\n    };\n\n    /**\n     * @deprecated use off()\n     * @param eventName\n     * @param fn\n     */\n    un(eventName, fn) {\n        this.off(eventName, fn)\n    };\n\n    off(eventName, fn) {\n\n        if (!eventName) {\n            this.eventHandlers = {}   // Remove all event handlers\n        } else if (!fn) {\n            this.eventHandlers[eventName] = [] // Remove all eventhandlers matching name\n        } else {\n            // Remove specific event handler\n            const handlers = this.eventHandlers[eventName]\n            if (!handlers || handlers.length === 0) {\n                console.warn(\"No handlers to remove for event: \" + eventName)\n            } else {\n                const callbackIndex = handlers.indexOf(fn)\n                if (callbackIndex !== -1) {\n                    this.eventHandlers[eventName].splice(callbackIndex, 1)\n                }\n            }\n        }\n    }\n\n    fireEvent(eventName, args, thisObj) {\n\n        const handlers = this.eventHandlers[eventName]\n        if (undefined === handlers || handlers.length === 0) {\n            return undefined\n        }\n\n        const scope = thisObj || window\n        const results = handlers.map(function (event) {\n            return event.apply(scope, args)\n        })\n\n        return results[0]\n    }\n\n    dispose() {\n        this.removeMouseHandlers()\n        for (let trackView of this.trackViews) {\n            trackView.dispose()\n        }\n    }\n\n    /**\n     * Return a json-like object (note not a json string) representing the current state.\n     *\n     */\n    toJSON() {\n\n        const json = {\n            \"version\": version()\n        }\n\n        if (this.showSampleNames !== undefined) {\n            json['showSampleNames'] = this.showSampleNames\n        }\n        if (this.sampleNameViewportWidth !== defaultSampleNameViewportWidth) {\n            json['sampleNameViewportWidth'] = this.sampleNameViewportWidth\n        }\n\n        json[\"reference\"] = this.genome.toJSON()\n        if (json.reference.fastaURL instanceof File) {   // Test specifically for File.  Other types of File-like objects might be savable) {\n            throw new Error(`Error. Sessions cannot include local file references ${json.reference.fastaURL.name}.`)\n        } else if (json.reference.indexURL instanceof File) {   // Test specifically for File.  Other types of File-like objects might be savable) {\n            throw new Error(`Error. Sessions cannot include local file references ${json.reference.indexURL.name}.`)\n        }\n\n        // Build locus array (multi-locus view).  Use the first track to extract the loci, any track could be used.\n        const locus = []\n        const gtexSelections = {}\n        let hasGtexSelections = false\n        let anyTrackView = this.trackViews[0]\n        for (let {referenceFrame} of anyTrackView.viewports) {\n            const locusString = referenceFrame.getLocusString()\n            locus.push(locusString)\n            if (referenceFrame.selection) {\n                const selection = {\n                    gene: referenceFrame.selection.gene,\n                    snp: referenceFrame.selection.snp\n                }\n                gtexSelections[locusString] = selection\n                hasGtexSelections = true\n            }\n        }\n        json[\"locus\"] = locus.length === 1 ? locus[0] : locus\n        if (hasGtexSelections) {\n            json[\"gtexSelections\"] = gtexSelections\n        }\n\n        json[\"roi\"] = this.roiManager.toJSON()\n\n        const trackJson = []\n        const errors = []\n        for (let {track} of this.trackViews) {\n            try {\n                let config\n                if (typeof track.getState === \"function\") {\n                    config = track.getState()\n                } else {\n                    config = track.config\n                }\n\n                if (config) {\n                    // null backpointer to browser\n                    if (config.browser) {\n                        delete config.browser\n                    }\n                    config.order = track.order //order++;\n                    trackJson.push(config)\n                }\n            } catch (e) {\n                console.error(`Track: ${track.name}: ${e}`)\n                errors.push(`Track: ${track.name}: ${e}`)\n            }\n        }\n\n        if (errors.length > 0) {\n            let n = 1\n            let message = 'Errors encountered saving session: </br>'\n            for (let e of errors) {\n                message += ` (${n++}) ${e.toString()} <br/>`\n            }\n            throw Error(message)\n        }\n\n\n        json[\"tracks\"] = trackJson\n\n        return json        // This is an object, not a json string\n\n    }\n\n    compressedSession() {\n        const json = JSON.stringify(this.toJSON())\n        return BGZip.compressString(json)\n    }\n\n    sessionURL() {\n        const path = window.location.href.slice()\n        const idx = path.indexOf(\"?\")\n        const surl = (idx > 0 ? path.substring(0, idx) : path) + \"?sessionURL=blob:\" + this.compressedSession()\n        return surl\n    }\n\n    /**\n     * Record a mouse click on a specific viewport.   This might be the start of a drag operation.   Dragging\n     * (panning) is handled here so that the mouse can move out of a specific viewport (e.g. stray into another\n     * track) without halting the drag.\n     *\n     * @param e\n     * @param viewport\n     */\n    mouseDownOnViewport(e, viewport) {\n\n        var coords\n        coords = DOMUtils.pageCoordinates(e)\n        this.vpMouseDown = {\n            viewport,\n            lastMouseX: coords.x,\n            mouseDownX: coords.x,\n            lastMouseY: coords.y,\n            mouseDownY: coords.y,\n            referenceFrame: viewport.referenceFrame\n        }\n    };\n\n    cancelTrackPan() {\n\n        const dragObject = this.dragObject\n        this.dragObject = undefined\n        this.isScrolling = false\n        this.vpMouseDown = undefined\n\n        if (dragObject && dragObject.viewport.referenceFrame.start !== dragObject.start) {\n            this.updateViews()\n            this.fireEvent('trackdragend')\n        }\n    }\n\n    isTrackPanning() {\n        return this.dragObject\n    }\n\n    isSoftclipped() {\n        const result = this.trackViews.find(tv => tv.track.showSoftClips === true)\n        return result !== undefined\n    }\n\n\n    /**\n     * Track drag here refers to vertical dragging to reorder tracks, not horizontal panning.\n     *\n     * @param trackView\n     */\n    startTrackDrag(trackView) {\n\n        this.dragTrack = trackView\n\n    }\n\n    /**\n     * Track drag here refers to vertical dragging to reorder tracks, not horizontal panning.\n     *\n     * @param dragDestination\n     */\n    updateTrackDrag(dragDestination) {\n\n        if (dragDestination && this.dragTrack) {\n\n            const dragged = this.dragTrack\n            const indexDestination = this.trackViews.indexOf(dragDestination)\n            const indexDragged = this.trackViews.indexOf(dragged)\n            const trackViews = this.trackViews\n\n            trackViews[indexDestination] = dragged\n            trackViews[indexDragged] = dragDestination\n\n            const newOrder = this.trackViews[indexDestination].track.order\n            this.trackViews[indexDragged].track.order = newOrder\n\n            const nTracks = trackViews.length\n            let lastOrder = newOrder\n\n            if (indexDestination < indexDragged) {\n                // Displace tracks below\n\n                for (let i = indexDestination + 1; i < nTracks; i++) {\n                    const track = trackViews[i].track\n                    if (track.order <= lastOrder) {\n                        track.order = Math.min(Number.MAX_SAFE_INTEGER, lastOrder + 1)\n                        lastOrder = track.order\n                    } else {\n                        break\n                    }\n                }\n            } else {\n                // Displace tracks above.  First track (index 0) is \"ruler\"\n                for (let i = indexDestination - 1; i > 0; i--) {\n                    const track = trackViews[i].track\n                    if (track.order >= lastOrder) {\n                        track.order = Math.max(-Number.MAX_SAFE_INTEGER, lastOrder - 1)\n                        lastOrder = track.order\n                    } else {\n                        break\n                    }\n                }\n            }\n            this.reorderTracks()\n        }\n    }\n\n    /**\n     * End vertical dragging of tracks (i.e. track re-order, not horizontal panning of data)\n     */\n    endTrackDrag() {\n        if (this.dragTrack) {\n            // this.dragTrack.$trackDragScrim.hide();\n            this.dragTrack = undefined\n            this.fireEvent('trackorderchanged', [this.getTrackOrder()])\n        } else {\n            this.dragTrack = undefined\n        }\n    }\n\n    /**\n     * Mouse handlers to support drag (pan)\n     */\n    addMouseHandlers() {\n        this.addWindowResizeHandler()\n        this.addRootMouseUpHandler()\n        this.addRootMouseLeaveHandler()\n        this.addColumnContainerEventHandlers()\n    }\n\n    removeMouseHandlers() {\n        this.removeWindowResizeHandler()\n        this.removeRootMouseUpHandler()\n        this.removeRootMouseLeaveHandler()\n        this.removeColumnContainerEventHandlers()\n    }\n\n    addWindowResizeHandler() {\n        // Create a copy of the prototype \"resize\" function bound to this instance.  Neccessary to support removing.\n        this.boundWindowResizeHandler = resize.bind(this)\n        window.addEventListener('resize', this.boundWindowResizeHandler)\n    }\n\n    removeWindowResizeHandler() {\n        window.removeEventListener('resize', this.boundWindowResizeHandler)\n    }\n\n    addRootMouseUpHandler() {\n        this.boundRootMouseUpHandler = mouseUpOrLeave.bind(this)\n        this.root.addEventListener('mouseup', this.boundRootMouseUpHandler)\n    }\n\n    removeRootMouseUpHandler() {\n        this.root.removeEventListener('mouseup', this.boundRootMouseUpHandler)\n    }\n\n    addRootMouseLeaveHandler() {\n        this.boundRootMouseLeaveHandler = mouseUpOrLeave.bind(this)\n        this.root.addEventListener('mouseleave', this.boundRootMouseLeaveHandler)\n    }\n\n    removeRootMouseLeaveHandler() {\n        this.root.removeEventListener('mouseleave', this.boundRootMouseLeaveHandler)\n    }\n\n    addColumnContainerEventHandlers() {\n        this.boundColumnContainerMouseMoveHandler = handleMouseMove.bind(this)\n        this.boundColumnContainerTouchMoveHandler = handleMouseMove.bind(this)\n        this.boundColumnContainerMouseLeaveHandler = mouseUpOrLeave.bind(this)\n        this.boundColumnContainerMouseUpHandler = mouseUpOrLeave.bind(this)\n        this.boundColumnContainerTouchEndHandler = mouseUpOrLeave.bind(this)\n\n        this.columnContainer.addEventListener('mousemove', this.boundColumnContainerMouseMoveHandler)\n        this.columnContainer.addEventListener('touchmove', this.boundColumnContainerTouchMoveHandler)\n\n        this.columnContainer.addEventListener('mouseleave', this.boundColumnContainerMouseLeaveHandler)\n\n        this.columnContainer.addEventListener('mouseup', this.boundColumnContainerMouseUpHandler)\n        this.columnContainer.addEventListener('touchend', this.boundColumnContainerTouchEndHandler)\n    }\n\n    removeColumnContainerEventHandlers() {\n        this.columnContainer.removeEventListener('mousemove', this.boundColumnContainerMouseMoveHandler)\n        this.columnContainer.removeEventListener('touchmove', this.boundColumnContainerTouchMoveHandler)\n\n        this.columnContainer.removeEventListener('mouseleave', this.boundColumnContainerMouseLeaveHandler)\n\n        this.columnContainer.removeEventListener('mouseup', this.boundColumnContainerMouseUpHandler)\n        this.columnContainer.removeEventListener('touchend', this.boundColumnContainerTouchEndHandler)\n    }\n\n    static uncompressSession(url) {\n\n        let bytes\n        if (url.indexOf('/gzip;base64') > 0) {\n            //Proper dataURI\n            bytes = BGZip.decodeDataURI(url)\n            let json = ''\n            for (let b of bytes) {\n                json += String.fromCharCode(b)\n            }\n            return json\n        } else {\n\n            let enc = url.substring(5)\n            return BGZip.uncompressString(enc)\n        }\n    }\n\n    createCircularView(container, show) {\n        show = show === true   // convert undefined to boolean\n        this.circularView = createCircularView(container, this)\n        this.circularViewControl = new CircularViewControl(this.$toggle_button_container.get(0), this)\n        this.circularView.setAssembly({\n            name: this.genome.id,\n            id: this.genome.id,\n            chromosomes: makeCircViewChromosomes(this.genome)\n        })\n        this.circularViewVisible = show\n        return this.circularView\n    }\n\n    get circularViewVisible() {\n        return this.circularView !== undefined && this.circularView.visible\n    }\n\n    set circularViewVisible(isVisible) {\n        if (this.circularView) {\n            this.circularView.visible = isVisible\n            this.circularViewControl.setState(isVisible)\n        }\n    }\n}\n\n/**\n * Function called win window is resized, or visibility changed (e.g. \"show\" from a tab).  This is a function rather\n * than class method because it needs to be copied and bound to specific instances of browser to support listener\n * removal\n *\n * @returns {Promise<void>}\n */\nasync function resize() {\n\n    if(!this.referenceFrameList) return\n\n    const viewportWidth = this.calculateViewportWidth(this.referenceFrameList.length)\n\n    for (let referenceFrame of this.referenceFrameList) {\n\n        const index = this.referenceFrameList.indexOf(referenceFrame)\n\n        const {chr, genome} = referenceFrame\n\n        const {bpLength} = genome.getChromosome(referenceFrame.chr)\n\n        const viewportWidthBP = referenceFrame.toBP(viewportWidth)\n\n        // viewportWidthBP > bpLength occurs when locus is full chromosome and user widens browser\n        if (GenomeUtils.isWholeGenomeView(chr) || viewportWidthBP > bpLength) {\n            // console.log(`${ Date.now() } Recalc referenceFrame(${ index }) bpp. viewport ${ StringUtils.numberFormatter(viewportWidthBP) } > ${ StringUtils.numberFormatter(bpLength) }.`)\n            referenceFrame.bpPerPixel = bpLength / viewportWidth\n        } else {\n            // console.log(`${ Date.now() } Recalc referenceFrame(${ index }) end.`)\n            referenceFrame.end = referenceFrame.start + referenceFrame.toBP(viewportWidth)\n        }\n\n        for (let {viewports} of this.trackViews) {\n            viewports[index].setWidth(viewportWidth)\n        }\n\n    }\n\n    this.updateUIWithReferenceFrameList()\n\n    //TODO -- update view only if needed.  Reducing size never needed.  Increasing size maybe\n\n    await this.updateViews(true)\n}\n\n\nfunction handleMouseMove(e) {\n\n    e.preventDefault()\n\n    const {x, y} = DOMUtils.pageCoordinates(e)\n\n    if (this.vpMouseDown) {\n\n        const {viewport, referenceFrame} = this.vpMouseDown\n\n        // Determine direction,  true == horizontal\n        const horizontal = Math.abs((x - this.vpMouseDown.mouseDownX)) > Math.abs((y - this.vpMouseDown.mouseDownY))\n\n        if (!this.dragObject && !this.isScrolling) {\n            if (horizontal) {\n                if (this.vpMouseDown.mouseDownX && Math.abs(x - this.vpMouseDown.mouseDownX) > this.constants.dragThreshold) {\n                    this.dragObject = {viewport, start: referenceFrame.start}\n                }\n            } else {\n                if (this.vpMouseDown.mouseDownY &&\n                    Math.abs(y - this.vpMouseDown.mouseDownY) > this.constants.scrollThreshold) {\n                    // Scrolling => dragging track vertically\n                    this.isScrolling = true\n                    const viewportHeight = viewport.$viewport.height()\n                    const contentHeight = viewport.trackView.maxViewportContentHeight()\n                    this.vpMouseDown.r = viewportHeight / contentHeight\n                }\n            }\n        }\n\n        if (this.dragObject) {\n            const clampDrag = !this.isSoftclipped()\n            let deltaX = this.vpMouseDown.lastMouseX - x\n            const viewChanged = referenceFrame.shiftPixels(deltaX, viewport.$viewport.width(), clampDrag)\n            if (viewChanged) {\n                this.updateViews()\n            }\n            this.fireEvent('trackdrag')\n        }\n\n\n        if (this.isScrolling) {\n            const delta = this.vpMouseDown.r * (this.vpMouseDown.lastMouseY - y)\n            viewport.trackView.moveScroller(delta)\n        }\n\n\n        this.vpMouseDown.lastMouseX = x\n        this.vpMouseDown.lastMouseY = y\n    }\n}\n\nfunction mouseUpOrLeave(e) {\n    this.cancelTrackPan()\n    this.endTrackDrag()\n}\n\n\nfunction getInitialLocus(locus, genome) {\n    if (locus) {\n        return Array.isArray(locus) ? locus.join(' ') : locus\n    } else {\n        return genome.getHomeChromosomeName()\n    }\n}\n\nfunction logo() {\n\n    return $(\n        '<svg width=\"690px\" height=\"324px\" viewBox=\"0 0 690 324\" version=\"1.1\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">' +\n        '<title>IGV</title>' +\n        '<g id=\"Page-1\" stroke=\"none\" stroke-width=\"1\" fill=\"none\" fill-rule=\"evenodd\">' +\n        '<g id=\"IGV\" fill=\"#666666\">' +\n        '<polygon id=\"Path\" points=\"379.54574 8.00169252 455.581247 8.00169252 515.564813 188.87244 532.884012 253.529506 537.108207 253.529506 554.849825 188.87244 614.833392 8.00169252 689.60164 8.00169252 582.729511 320.722144 486.840288 320.722144\"></polygon>' +\n        '<path d=\"M261.482414,323.793286 C207.975678,323.793286 168.339046,310.552102 142.571329,284.069337 C116.803612,257.586572 103.919946,217.158702 103.919946,162.784513 C103.919946,108.410325 117.437235,67.8415913 144.472217,41.0770945 C171.507199,14.3125977 212.903894,0.930550071 268.663545,0.930550071 C283.025879,0.930550071 298.232828,1.84616386 314.284849,3.6774189 C330.33687,5.50867394 344.839793,7.97378798 357.794056,11.072835 L357.794056,68.968378 C339.48912,65.869331 323.578145,63.5450806 310.060654,61.9955571 C296.543163,60.4460336 284.574731,59.6712835 274.154998,59.6712835 C255.850062,59.6712835 240.502308,61.4320792 228.111274,64.9537236 C215.720241,68.4753679 205.793482,74.2507779 198.330701,82.2801269 C190.867919,90.309476 185.587729,100.87425 182.48997,113.974767 C179.392212,127.075284 177.843356,143.345037 177.843356,162.784513 C177.843356,181.942258 179.251407,198.000716 182.067551,210.960367 C184.883695,223.920018 189.671068,234.41436 196.429813,242.443709 C203.188559,250.473058 212.059279,256.178037 223.042241,259.558815 C234.025202,262.939594 247.683295,264.629958 264.01693,264.629958 C268.241146,264.629958 273.098922,264.489094 278.590403,264.207362 C284.081883,263.925631 289.643684,263.50304 295.275972,262.939577 L295.275972,159.826347 L361.595831,159.826347 L361.595831,308.579859 C344.698967,313.087564 327.239137,316.750019 309.215815,319.567334 C291.192494,322.38465 275.281519,323.793286 261.482414,323.793286 L261.482414,323.793286 L261.482414,323.793286 Z\" id=\"Path\"></path>;' +\n        '<polygon id=\"Path\" points=\"0.81355666 5.00169252 73.0472883 5.00169252 73.0472883 317.722144 0.81355666 317.722144\"></polygon>' +\n        '</g> </g> </svg>'\n    )\n}\n\nfunction toggleTrackLabels(trackViews, isVisible) {\n\n    for (let {viewports} of trackViews) {\n        for (let viewport of viewports) {\n            if (viewport.$trackLabel) {\n                if (0 === viewports.indexOf(viewport) && true === isVisible) {\n                    viewport.$trackLabel.show()\n                } else {\n                    viewport.$trackLabel.hide()\n                }\n            }\n        }\n    }\n}\n\nasync function searchWebService(browser, locus, searchConfig) {\n\n    let path = searchConfig.url.replace(\"$FEATURE$\", locus.toUpperCase())\n    if (path.indexOf(\"$GENOME$\") > -1) {\n        path = path.replace(\"$GENOME$\", (browser.genome.id ? browser.genome.id : \"hg19\"))\n    }\n    const result = await igvxhr.loadString(path)\n    return {result: result, locusSearchString: locus}\n}\n\nexport {searchWebService}\nexport default Browser\n\n","/*\n * The MIT License (MIT)\n *\n * Copyright (c) 2014 Broad Institute\n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to deal\n * in the Software without restriction, including without limitation the rights\n * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell\n * copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,\n * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN\n * THE SOFTWARE.\n */\n\nimport {GoogleAuth, igvxhr} from '../node_modules/igv-utils/src/index.js'\nimport Browser from \"./browser.js\"\nimport GenomeUtils from \"./genome/genome.js\"\n\nlet allBrowsers = []\n\n/**\n * Create an igv.browser instance.  This object defines the public API for interacting with the genome browser.\n *\n * @param parentDiv - DOM tree root\n * @param config - configuration options.\n *\n */\nasync function createBrowser(parentDiv, config) {\n\n    if (undefined === config) config = {}\n\n    // Initialize pre-defined genomes.  The genome list is shared among all browser instances\n    if (!GenomeUtils.KNOWN_GENOMES) {\n        await GenomeUtils.initializeGenomes(config)\n    }\n\n    setDefaults(config)\n\n    if (config.queryParametersSupported) {\n        extractQuery(config)\n    }\n    if (config.apiKey) {\n        igvxhr.setApiKey(config.apiKey)\n    }\n    if (config.oauthToken) {\n        igvxhr.setOauthToken(config.oauthToken)\n    }\n    if (config.clientId && (!GoogleAuth.isInitialized())) {\n        await GoogleAuth.init({\n            clientId: config.clientId,\n            apiKey: config.apiKey,\n            scope: 'https://www.googleapis.com/auth/userinfo.profile'\n        })\n    }\n\n    // Create browser\n    const browser = new Browser(config, parentDiv)\n    allBrowsers.push(browser)\n\n    // Load initial session\n    if (config.sessionURL) {\n        await browser.loadSession({\n            url: config.sessionURL\n        })\n    } else {\n        await browser.loadSessionObject(config)\n    }\n\n    browser.navbarManager.navbarDidResize(browser.$navigation.width())\n\n    return browser\n\n}\n\nfunction removeBrowser(browser) {\n    browser.dispose()\n    browser.root.remove()\n    allBrowsers = allBrowsers.filter(item => item !== browser)\n}\n\nfunction removeAllBrowsers() {\n    for (let browser of allBrowsers) {\n        browser.dispose()\n        browser.root.remove()\n    }\n    allBrowsers = []\n}\n\nfunction getAllBrowsers() {\n    return allBrowsers;\n}\n\n/**\n * This function provided so clients can inform igv of a visibility change, typically when an igv instance is\n * made visible from a tab, accordion, or similar widget.\n */\nasync function visibilityChange() {\n    for (let browser of allBrowsers) {\n        await browser.visibilityChange()\n    }\n}\n\nfunction setDefaults(config) {\n\n    if (undefined === config.minimumBases) {\n        config.minimumBases = 40\n    }\n\n    if (undefined === config.showIdeogram) {\n        config.showIdeogram = true\n    }\n\n    if (undefined === config.showCircularView) {\n        config.showCircularView = false\n    }\n\n    if (undefined === config.showCircularViewButton) {\n        config.showCircularViewButton = false\n    }\n\n    if (undefined === config.showTrackLabelButton) {\n        config.showTrackLabelButton = true\n    }\n\n    if (undefined === config.showTrackLabels) {\n        config.showTrackLabels = true\n    }\n\n    if (undefined === config.showROITableButton) {\n        config.showROITableButton = false\n    }\n\n    if (undefined === config.showROITable) {\n        config.showROITable = false\n    }\n\n    if (undefined === config.showCursorTrackingGuideButton) {\n        config.showCursorTrackingGuideButton = true\n    }\n\n\n    if (undefined === config.showCursorGuide) {\n        config.showCursorGuide = config.showCursorTrackingGuide || false   // showCursorTrackingGuide is a synonym\n    }\n\n    if (undefined === config.showCenterGuideButton) {\n        config.showCenterGuideButton = true\n    }\n\n    if (undefined === config.showCenterGuide) {\n        config.showCenterGuide = false\n    }\n\n    if (undefined === config.showSampleNames) {\n        config.showSampleNames = false\n    }\n\n    if (undefined === config.showSVGButton) {\n        config.showSVGButton = true\n    }\n\n    if (config.showControls === undefined) {\n        config.showControls = true\n    }\n\n    if (config.showNavigation === undefined) {\n        config.showNavigation = true\n    }\n\n    if (config.showRuler === undefined) {\n        config.showRuler = true\n    }\n\n    if (config.flanking === undefined) {\n        config.flanking = 1000\n    }\n\n    if (config.pairsSupported === undefined) {\n        config.pairsSupported = true\n    }\n\n    if (!config.tracks) {\n        config.tracks = []\n    }\n\n}\n\n\nfunction extractQuery(config) {\n\n    var i1, i2, i, j, s, query, tokens, uri, key, value\n\n    uri = window.location.href\n\n    query = {}\n    i1 = uri.indexOf(\"?\")\n    i2 = uri.lastIndexOf(\"#\")\n\n    let files\n    let indexURLs\n    let names\n    if (i1 >= 0) {\n        if (i2 < 0) i2 = uri.length\n        for (i = i1 + 1; i < i2;) {\n            j = uri.indexOf(\"&\", i)\n            if (j < 0) j = i2\n\n            s = uri.substring(i, j)\n            tokens = s.split(\"=\", 2)\n\n            if (tokens.length === 2) {\n                key = tokens[0]\n                value = decodeURIComponent(tokens[1])\n\n                if ('file' === key) {\n                    // IGV desktop style file parameter\n                    files = value.split(',')\n                } else if ('index' === key) {\n                    // IGV desktop style index parameter\n                    indexURLs = value.split(',')\n                } else if ('name' === key) {\n                    // IGV desktop style index parameter\n                    names = value.split(',')\n                } else if ('genome' === key && ((value.startsWith(\"https://\") || value.startsWith(\"http://\")) && !value.endsWith(\".json\"))) {\n                    // IGV desktop compatibility -- assuming url to fasta\n                    config['reference'] = {\n                        fastaURL: value,\n                        indexURL: value + \".fai\"\n                    }\n                } else {\n                    config[key] = value\n                }\n                i = j + 1\n            } else {\n                i++;\n            }\n        }\n    }\n\n    if (files) {\n\n        if (!config.tracks)\n            config.tracks = []\n        for (let i = 0; i < files.length; i++) {\n\n            if (files[i].endsWith(\".xml\") || files[i].endsWith(\".json\")) {\n                config.sessionURL = files[i]\n                break\n            }\n\n            const trackConfig = {url: files[i]}\n            if (indexURLs && indexURLs.length > i) {\n                trackConfig.indexURL = indexURLs[i]\n            }\n            if (names && names.length > i) {\n                trackConfig.name = names[i]\n            }\n            config.tracks.push(trackConfig)\n        }\n    }\n\n    return query\n}\n\n\nasync function createTrack(config, browser) {\n    return await Browser.prototype.createTrack.call(browser, config)\n}\n\nexport {createTrack, createBrowser, removeBrowser, removeAllBrowsers, getAllBrowsers, visibilityChange}\n","// Defines the top-level API for the igv module\n\nimport MenuUtils from \"./ui/menuUtils.js\"\nimport DataRangeDialog from \"./ui/dataRangeDialog.js\"\nimport IGVGraphics from \"./igv-canvas.js\"\nimport {createBrowser, createTrack, removeAllBrowsers, removeBrowser, visibilityChange} from './igv-create.js'\nimport embedCss from \"./embedCss.js\"\nimport version from \"./version.js\"\nimport * as TrackUtils from \"./util/trackUtils.js\"\nimport {registerFileFormats} from \"./util/trackUtils.js\"\nimport {igvxhr} from \"../node_modules/igv-utils/src/index.js\"\n\nconst setApiKey = igvxhr.setApiKey\n\nembedCss()\n\nfunction setGoogleOauthToken(accessToken) {\n    return igvxhr.setOauthToken(accessToken)\n}\n\nfunction setOauthToken(accessToken, host) {\n    return igvxhr.setOauthToken(accessToken, host)\n}\n\n// Backward compatibility\nconst oauth = igvxhr.oauth\n\nexport default {\n    TrackUtils,\n    IGVGraphics,\n    MenuUtils,\n    DataRangeDialog,\n    createTrack,\n    createBrowser,\n    removeBrowser,\n    removeAllBrowsers,\n    visibilityChange,\n    setGoogleOauthToken,\n    setOauthToken,\n    oauth,\n    version,\n    setApiKey,\n    registerFileFormats\n}\n\n","function embedCSS() {\n\n    var css = '.igv-navbar {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-between;\\n  align-items: center;\\n  box-sizing: border-box;\\n  width: 100%;\\n  color: #444;\\n  font-size: 12px;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-weight: 400;\\n  line-height: 32px;\\n  padding-left: 8px;\\n  padding-right: 8px;\\n  margin-top: 2px;\\n  margin-bottom: 6px;\\n  height: 32px;\\n  border-style: solid;\\n  border-radius: 3px;\\n  border-width: thin;\\n  border-color: #bfbfbf;\\n  background-color: #f3f3f3;\\n}\\n.igv-navbar .igv-navbar-left-container {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-between;\\n  align-items: center;\\n  height: 32px;\\n  line-height: 32px;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-logo {\\n  width: 34px;\\n  height: 32px;\\n  margin-right: 8px;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-current-genome {\\n  height: 32px;\\n  margin-left: 4px;\\n  margin-right: 4px;\\n  user-select: none;\\n  line-height: 32px;\\n  vertical-align: middle;\\n  text-align: center;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-between;\\n  align-items: center;\\n  height: 100%;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-chromosome-select-widget-container {\\n  display: flex;\\n  flex-flow: column;\\n  flex-wrap: nowrap;\\n  justify-content: space-around;\\n  align-items: center;\\n  height: 100%;\\n  width: 125px;\\n  margin-right: 4px;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-chromosome-select-widget-container select {\\n  display: block;\\n  cursor: pointer;\\n  width: 100px;\\n  height: 75%;\\n  outline: none;\\n  font-size: 12px;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-weight: 400;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-between;\\n  align-items: center;\\n  margin-left: 8px;\\n  height: 22px;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n  width: 210px;\\n  height: 22px;\\n  line-height: 22px;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container input.igv-search-input {\\n  cursor: text;\\n  width: 85%;\\n  height: 22px;\\n  line-height: 22px;\\n  font-size: 12px;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-weight: 400;\\n  text-align: left;\\n  padding-left: 8px;\\n  margin-right: 8px;\\n  outline: none;\\n  border-style: solid;\\n  border-radius: 3px;\\n  border-width: thin;\\n  border-color: #bfbfbf;\\n  background-color: white;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-search-container .igv-search-icon-container {\\n  cursor: pointer;\\n  height: 16px;\\n  width: 16px;\\n}\\n.igv-navbar .igv-navbar-left-container .igv-navbar-genomic-location .igv-locus-size-group .igv-windowsize-panel-container {\\n  margin-left: 4px;\\n  user-select: none;\\n}\\n.igv-navbar .igv-navbar-right-container {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-between;\\n  align-items: center;\\n  height: 32px;\\n  line-height: 32px;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-between;\\n  align-items: center;\\n  height: 100%;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container div {\\n  margin-left: 0;\\n  margin-right: 4px;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container div:last-child {\\n  margin-left: 0;\\n  margin-right: 0;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-navbar-toggle-button-container-750 {\\n  display: none;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget {\\n  color: #737373;\\n  font-size: 18px;\\n  height: 32px;\\n  line-height: 32px;\\n  margin-left: 8px;\\n  user-select: none;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-end;\\n  align-items: center;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div {\\n  cursor: pointer;\\n  margin-left: unset;\\n  margin-right: unset;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:first-child {\\n  height: 24px;\\n  width: 24px;\\n  margin-left: unset;\\n  margin-right: 8px;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:last-child {\\n  height: 24px;\\n  width: 24px;\\n  margin-left: 8px;\\n  margin-right: unset;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget div:nth-child(even) {\\n  display: block;\\n  height: fit-content;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget input {\\n  display: block;\\n  width: 125px;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget svg {\\n  display: block;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 {\\n  color: #737373;\\n  font-size: 18px;\\n  height: 32px;\\n  line-height: 32px;\\n  margin-left: 8px;\\n  user-select: none;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-end;\\n  align-items: center;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div {\\n  cursor: pointer;\\n  margin-left: unset;\\n  margin-right: unset;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:first-child {\\n  height: 24px;\\n  width: 24px;\\n  margin-left: unset;\\n  margin-right: 8px;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:last-child {\\n  height: 24px;\\n  width: 24px;\\n  margin-left: 8px;\\n  margin-right: unset;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 div:nth-child(even) {\\n  width: 0;\\n  height: 0;\\n  display: none;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 input {\\n  width: 0;\\n  height: 0;\\n  display: none;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-900 svg {\\n  display: block;\\n}\\n.igv-navbar .igv-navbar-right-container .igv-zoom-widget-hidden {\\n  display: none;\\n}\\n\\n.igv-navbar-button {\\n  display: block;\\n  box-sizing: unset;\\n  padding-left: 6px;\\n  padding-right: 6px;\\n  height: 18px;\\n  text-transform: capitalize;\\n  user-select: none;\\n  line-height: 18px;\\n  text-align: center;\\n  vertical-align: middle;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 11px;\\n  font-weight: 200;\\n  color: #737373;\\n  background-color: #f3f3f3;\\n  border-color: #737373;\\n  border-style: solid;\\n  border-width: thin;\\n  border-radius: 6px;\\n}\\n\\n.igv-navbar-button-clicked {\\n  color: white;\\n  background-color: #737373;\\n}\\n\\n.igv-navbar-button:hover {\\n  cursor: pointer;\\n}\\n\\n.igv-zoom-in-notice-container {\\n  z-index: 1024;\\n  position: absolute;\\n  top: 8px;\\n  left: 50%;\\n  transform: translate(-50%, 0%);\\n  display: flex;\\n  flex-direction: row;\\n  flex-wrap: nowrap;\\n  justify-content: center;\\n  align-items: center;\\n  background-color: white;\\n}\\n.igv-zoom-in-notice-container > div {\\n  padding-left: 4px;\\n  padding-right: 4px;\\n  padding-top: 2px;\\n  padding-bottom: 2px;\\n  width: 100%;\\n  height: 100%;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 14px;\\n  font-weight: 400;\\n  color: #3f3f3f;\\n}\\n\\n.igv-zoom-in-notice {\\n  position: absolute;\\n  top: 10px;\\n  left: 50%;\\n}\\n.igv-zoom-in-notice div {\\n  position: relative;\\n  left: -50%;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: medium;\\n  font-weight: 400;\\n  color: #3f3f3f;\\n  background-color: rgba(255, 255, 255, 0.51);\\n  z-index: 64;\\n}\\n\\n.igv-container-spinner {\\n  position: absolute;\\n  top: 90%;\\n  left: 50%;\\n  transform: translate(-50%, -50%);\\n  z-index: 1024;\\n  width: 24px;\\n  height: 24px;\\n  pointer-events: none;\\n  color: #737373;\\n}\\n\\n.igv-multi-locus-close-button {\\n  position: absolute;\\n  top: 2px;\\n  right: 0;\\n  padding-left: 2px;\\n  padding-right: 2px;\\n  width: 12px;\\n  height: 12px;\\n  color: #666666;\\n  background-color: white;\\n  z-index: 1000;\\n}\\n.igv-multi-locus-close-button > svg {\\n  vertical-align: top;\\n}\\n\\n.igv-multi-locus-close-button:hover {\\n  cursor: pointer;\\n  color: #434343;\\n}\\n\\n.igv-multi-locus-ruler-label {\\n  z-index: 64;\\n  position: absolute;\\n  top: 2px;\\n  left: 0;\\n  width: 100%;\\n  height: 12px;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: center;\\n  align-items: center;\\n}\\n.igv-multi-locus-ruler-label > div {\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 12px;\\n  color: rgb(16, 16, 16);\\n  background-color: white;\\n}\\n.igv-multi-locus-ruler-label > div {\\n  cursor: pointer;\\n}\\n\\n.igv-multi-locus-ruler-label-square-dot {\\n  z-index: 64;\\n  position: absolute;\\n  left: 50%;\\n  top: 5%;\\n  transform: translate(-50%, 0%);\\n  background-color: white;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-multi-locus-ruler-label-square-dot > div:first-child {\\n  width: 14px;\\n  height: 14px;\\n}\\n.igv-multi-locus-ruler-label-square-dot > div:last-child {\\n  margin-left: 16px;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 14px;\\n  font-weight: 400;\\n  color: rgb(16, 16, 16);\\n}\\n\\n.igv-ruler-sweeper {\\n  display: none;\\n  pointer-events: none;\\n  position: absolute;\\n  top: 26px;\\n  bottom: 0;\\n  left: 0;\\n  width: 0;\\n  z-index: 99999;\\n  background-color: rgba(68, 134, 247, 0.25);\\n}\\n\\n.igv-ruler-tooltip {\\n  pointer-events: none;\\n  z-index: 128;\\n  position: absolute;\\n  top: 0;\\n  left: 0;\\n  width: 1px;\\n  height: 32px;\\n  background-color: transparent;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-ruler-tooltip > div {\\n  pointer-events: none;\\n  width: 128px;\\n  height: auto;\\n  padding: 1px;\\n  color: #373737;\\n  font-size: 10px;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-weight: 400;\\n  background-color: white;\\n  border-style: solid;\\n  border-width: thin;\\n  border-color: #373737;\\n}\\n\\n.igv-track-label {\\n  position: absolute;\\n  left: 8px;\\n  top: 8px;\\n  width: auto;\\n  height: auto;\\n  max-width: 50%;\\n  padding-left: 4px;\\n  padding-right: 4px;\\n  white-space: nowrap;\\n  overflow: hidden;\\n  text-overflow: ellipsis;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: small;\\n  font-weight: 400;\\n  text-align: center;\\n  user-select: none;\\n  -moz-user-select: none;\\n  -webkit-user-select: none;\\n  border-color: #444;\\n  border-radius: 2px;\\n  border-style: solid;\\n  border-width: thin;\\n  background-color: white;\\n  z-index: 128;\\n  cursor: pointer;\\n}\\n\\n.igv-track-label:hover,\\n.igv-track-label:focus,\\n.igv-track-label:active {\\n  background-color: #e8e8e8;\\n}\\n\\n.igv-track-label-popup-shim {\\n  padding-left: 8px;\\n  padding-right: 8px;\\n  padding-top: 4px;\\n}\\n\\n.igv-center-line {\\n  display: none;\\n  pointer-events: none;\\n  position: absolute;\\n  top: 0;\\n  bottom: 0;\\n  left: 50%;\\n  transform: translateX(-50%);\\n  z-index: 8;\\n  user-select: none;\\n  -moz-user-select: none;\\n  -webkit-user-select: none;\\n  border-left-style: dashed;\\n  border-left-width: thin;\\n  border-right-style: dashed;\\n  border-right-width: thin;\\n}\\n\\n.igv-center-line-wide {\\n  background-color: rgba(0, 0, 0, 0);\\n  border-left-color: rgba(127, 127, 127, 0.51);\\n  border-right-color: rgba(127, 127, 127, 0.51);\\n}\\n\\n.igv-center-line-thin {\\n  background-color: rgba(0, 0, 0, 0);\\n  border-left-color: rgba(127, 127, 127, 0.51);\\n  border-right-color: rgba(0, 0, 0, 0);\\n}\\n\\n.igv-cursor-guide-horizontal {\\n  display: none;\\n  pointer-events: none;\\n  user-select: none;\\n  -moz-user-select: none;\\n  -webkit-user-select: none;\\n  position: absolute;\\n  left: 0;\\n  right: 0;\\n  top: 50%;\\n  height: 1px;\\n  z-index: 1;\\n  margin-left: 50px;\\n  margin-right: 54px;\\n  border-top-style: dotted;\\n  border-top-width: thin;\\n  border-top-color: rgba(127, 127, 127, 0.76);\\n}\\n\\n.igv-cursor-guide-vertical {\\n  pointer-events: none;\\n  user-select: none;\\n  -moz-user-select: none;\\n  -webkit-user-select: none;\\n  position: absolute;\\n  top: 0;\\n  bottom: 0;\\n  left: 50%;\\n  width: 1px;\\n  z-index: 1;\\n  border-left-style: dotted;\\n  border-left-width: thin;\\n  border-left-color: rgba(127, 127, 127, 0.76);\\n  display: none;\\n}\\n\\n.igv-user-feedback {\\n  position: fixed;\\n  top: 50%;\\n  left: 50%;\\n  transform: translate(-50%, -50%);\\n  width: 512px;\\n  height: 360px;\\n  z-index: 2048;\\n  background-color: white;\\n  border-color: #a2a2a2;\\n  border-style: solid;\\n  border-width: thin;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: medium;\\n  font-weight: 400;\\n  color: #444;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-user-feedback div:first-child {\\n  position: relative;\\n  height: 24px;\\n  width: 100%;\\n  background-color: white;\\n  border-bottom-color: #a2a2a2;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n}\\n.igv-user-feedback div:first-child div {\\n  position: absolute;\\n  top: 2px;\\n  width: 16px;\\n  height: 16px;\\n  background-color: transparent;\\n}\\n.igv-user-feedback div:first-child div:first-child {\\n  left: 8px;\\n}\\n.igv-user-feedback div:first-child div:last-child {\\n  cursor: pointer;\\n  right: 8px;\\n}\\n.igv-user-feedback div:last-child {\\n  width: 100%;\\n  height: calc(100% - 24px);\\n  border-width: 0;\\n}\\n.igv-user-feedback div:last-child div {\\n  width: auto;\\n  height: auto;\\n  margin: 8px;\\n}\\n\\n.igv-generic-dialog-container {\\n  position: absolute;\\n  top: 0;\\n  left: 0;\\n  width: 300px;\\n  height: 200px;\\n  border-color: #7F7F7F;\\n  border-radius: 4px;\\n  border-style: solid;\\n  border-width: thin;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: medium;\\n  font-weight: 400;\\n  z-index: 2048;\\n  background-color: white;\\n  display: flex;\\n  flex-flow: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-header {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-end;\\n  align-items: center;\\n  width: 100%;\\n  height: 24px;\\n  cursor: move;\\n  border-top-left-radius: 4px;\\n  border-top-right-radius: 4px;\\n  border-bottom-color: #7F7F7F;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n  background-color: #eee;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-header div {\\n  margin-right: 4px;\\n  margin-bottom: 2px;\\n  height: 12px;\\n  width: 12px;\\n  color: #7F7F7F;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-header div:hover {\\n  cursor: pointer;\\n  color: #444;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-one-liner {\\n  color: #373737;\\n  width: 95%;\\n  height: 24px;\\n  line-height: 24px;\\n  text-align: left;\\n  margin-top: 8px;\\n  padding-left: 8px;\\n  overflow-wrap: break-word;\\n  background-color: white;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-label-input {\\n  margin-top: 8px;\\n  width: 95%;\\n  height: 24px;\\n  color: #373737;\\n  line-height: 24px;\\n  padding-left: 8px;\\n  background-color: white;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-label-input div {\\n  width: 30%;\\n  height: 100%;\\n  font-size: 16px;\\n  text-align: right;\\n  padding-right: 8px;\\n  background-color: white;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-label-input input {\\n  display: block;\\n  height: 100%;\\n  width: 100%;\\n  padding-left: 4px;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-weight: 400;\\n  color: #373737;\\n  text-align: left;\\n  outline: none;\\n  border-style: solid;\\n  border-width: thin;\\n  border-color: #7F7F7F;\\n  background-color: white;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-label-input input {\\n  width: 50%;\\n  font-size: 16px;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-input {\\n  margin-top: 8px;\\n  width: calc(100% - 16px);\\n  height: 24px;\\n  color: #373737;\\n  line-height: 24px;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-around;\\n  align-items: center;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-input input {\\n  display: block;\\n  height: 100%;\\n  width: 100%;\\n  padding-left: 4px;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-weight: 400;\\n  color: #373737;\\n  text-align: left;\\n  outline: none;\\n  border-style: solid;\\n  border-width: thin;\\n  border-color: #7F7F7F;\\n  background-color: white;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-input input {\\n  font-size: 16px;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel {\\n  width: 100%;\\n  height: 28px;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-around;\\n  align-items: center;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div {\\n  margin-top: 32px;\\n  color: white;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 14px;\\n  font-weight: 400;\\n  width: 75px;\\n  height: 28px;\\n  line-height: 28px;\\n  text-align: center;\\n  border-color: transparent;\\n  border-style: solid;\\n  border-width: thin;\\n  border-radius: 2px;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:first-child {\\n  margin-left: 32px;\\n  margin-right: 0;\\n  background-color: #5ea4e0;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:last-child {\\n  margin-left: 0;\\n  margin-right: 32px;\\n  background-color: #c4c4c4;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:first-child:hover {\\n  cursor: pointer;\\n  background-color: #3b5c7f;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok-cancel div:last-child:hover {\\n  cursor: pointer;\\n  background-color: #7f7f7f;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok {\\n  width: 100%;\\n  height: 36px;\\n  margin-top: 32px;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-around;\\n  align-items: center;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok div {\\n  width: 98px;\\n  height: 36px;\\n  line-height: 36px;\\n  text-align: center;\\n  color: white;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: medium;\\n  font-weight: 400;\\n  border-color: white;\\n  border-style: solid;\\n  border-width: thin;\\n  border-radius: 4px;\\n  background-color: #2B81AF;\\n}\\n.igv-generic-dialog-container .igv-generic-dialog-ok div:hover {\\n  cursor: pointer;\\n  background-color: #25597f;\\n}\\n\\n.igv-generic-container {\\n  position: absolute;\\n  top: 0;\\n  left: 0;\\n  z-index: 2048;\\n  background-color: white;\\n  cursor: pointer;\\n  display: flex;\\n  flex-direction: row;\\n  flex-wrap: wrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-generic-container div:first-child {\\n  cursor: move;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-end;\\n  align-items: center;\\n  height: 24px;\\n  width: 100%;\\n  background-color: #dddddd;\\n}\\n.igv-generic-container div:first-child i {\\n  display: block;\\n  color: #5f5f5f;\\n  cursor: pointer;\\n  width: 14px;\\n  height: 14px;\\n  margin-right: 8px;\\n  margin-bottom: 4px;\\n}\\n\\n.igv-menu-popup {\\n  position: absolute;\\n  top: 0;\\n  left: 0;\\n  width: max-content;\\n  z-index: 4096;\\n  cursor: pointer;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: small;\\n  font-weight: 400;\\n  color: #4b4b4b;\\n  background: white;\\n  border-radius: 4px;\\n  border-color: #7F7F7F;\\n  border-style: solid;\\n  border-width: thin;\\n  display: flex;\\n  flex-flow: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-end;\\n  text-align: left;\\n}\\n.igv-menu-popup > div:not(:first-child) {\\n  width: 100%;\\n}\\n.igv-menu-popup > div:not(:first-child) > div {\\n  background: white;\\n}\\n.igv-menu-popup > div:not(:first-child) > div.context-menu {\\n  padding-left: 4px;\\n  padding-right: 4px;\\n}\\n.igv-menu-popup > div:not(:first-child) > div:last-child {\\n  border-bottom-left-radius: 4px;\\n  border-bottom-right-radius: 4px;\\n  border-bottom-color: transparent;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n}\\n.igv-menu-popup > div:not(:first-child) > div:hover {\\n  background: #efefef;\\n}\\n\\n.igv-menu-popup-shim {\\n  padding-left: 8px;\\n  padding-right: 8px;\\n  padding-bottom: 1px;\\n  padding-top: 1px;\\n}\\n\\n.igv-menu-popup-header {\\n  position: relative;\\n  width: 100%;\\n  height: 24px;\\n  cursor: move;\\n  border-top-color: transparent;\\n  border-top-left-radius: 4px;\\n  border-top-right-radius: 4px;\\n  border-bottom-color: #7F7F7F;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n  background-color: #eee;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-end;\\n  align-items: center;\\n}\\n.igv-menu-popup-header div {\\n  margin-right: 4px;\\n  height: 12px;\\n  width: 12px;\\n  color: #7F7F7F;\\n}\\n.igv-menu-popup-header div:hover {\\n  cursor: pointer;\\n  color: #444;\\n}\\n\\n.igv-menu-popup-check-container {\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n  width: 100%;\\n  height: 20px;\\n  margin-right: 4px;\\n  background-color: transparent;\\n}\\n.igv-menu-popup-check-container div {\\n  padding-top: 2px;\\n  padding-left: 8px;\\n}\\n.igv-menu-popup-check-container div:first-child {\\n  position: relative;\\n  width: 12px;\\n  height: 12px;\\n}\\n.igv-menu-popup-check-container div:first-child svg {\\n  position: absolute;\\n  width: 12px;\\n  height: 12px;\\n}\\n\\n.igv-user-feedback {\\n  position: fixed;\\n  top: 50%;\\n  left: 50%;\\n  transform: translate(-50%, -50%);\\n  width: 512px;\\n  height: 360px;\\n  z-index: 2048;\\n  background-color: white;\\n  border-color: #a2a2a2;\\n  border-style: solid;\\n  border-width: thin;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: medium;\\n  font-weight: 400;\\n  color: #444;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: center;\\n}\\n.igv-user-feedback div:first-child {\\n  position: relative;\\n  height: 24px;\\n  width: 100%;\\n  background-color: white;\\n  border-bottom-color: #a2a2a2;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n}\\n.igv-user-feedback div:first-child div {\\n  position: absolute;\\n  top: 2px;\\n  width: 16px;\\n  height: 16px;\\n  background-color: transparent;\\n}\\n.igv-user-feedback div:first-child div:first-child {\\n  left: 8px;\\n}\\n.igv-user-feedback div:first-child div:last-child {\\n  cursor: pointer;\\n  right: 8px;\\n}\\n.igv-user-feedback div:last-child {\\n  width: 100%;\\n  height: calc(100% - 24px);\\n  border-width: 0;\\n}\\n.igv-user-feedback div:last-child div {\\n  width: auto;\\n  height: auto;\\n  margin: 8px;\\n}\\n\\n.igv-loading-spinner-container {\\n  z-index: 1024;\\n  position: absolute;\\n  top: 50%;\\n  left: 50%;\\n  transform: translate(-50%, -50%);\\n  width: 32px;\\n  height: 32px;\\n  display: flex;\\n  flex-direction: row;\\n  flex-wrap: nowrap;\\n  justify-content: center;\\n  align-items: center;\\n}\\n.igv-loading-spinner-container > div {\\n  box-sizing: border-box;\\n  width: 100%;\\n  height: 100%;\\n  border-radius: 50%;\\n  border: 4px solid rgba(128, 128, 128, 0.5);\\n  border-top-color: rgb(255, 255, 255);\\n  animation: spin 1s ease-in-out infinite;\\n  -webkit-animation: spin 1s ease-in-out infinite;\\n}\\n\\n@keyframes spin {\\n  to {\\n    -webkit-transform: rotate(360deg);\\n    transform: rotate(360deg);\\n  }\\n}\\n@-webkit-keyframes spin {\\n  to {\\n    -webkit-transform: rotate(360deg);\\n    transform: rotate(360deg);\\n  }\\n}\\n.igv-roi-menu-next-gen {\\n  position: absolute;\\n  z-index: 512;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: small;\\n  font-weight: 400;\\n  color: #4b4b4b;\\n  background-color: white;\\n  width: 192px;\\n  border-radius: 4px;\\n  border-color: #7F7F7F;\\n  border-style: solid;\\n  border-width: thin;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: stretch;\\n}\\n.igv-roi-menu-next-gen > div:first-child {\\n  height: 24px;\\n  border-top-color: transparent;\\n  border-top-left-radius: 4px;\\n  border-top-right-radius: 4px;\\n  border-bottom-color: #7F7F7F;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n  background-color: #eee;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-end;\\n  align-items: center;\\n}\\n.igv-roi-menu-next-gen > div:first-child > div {\\n  margin-right: 4px;\\n  height: 12px;\\n  width: 12px;\\n  color: #7F7F7F;\\n}\\n.igv-roi-menu-next-gen > div:first-child > div:hover {\\n  cursor: pointer;\\n  color: #444;\\n}\\n.igv-roi-menu-next-gen > div:last-child {\\n  background-color: white;\\n  border-bottom-left-radius: 4px;\\n  border-bottom-right-radius: 4px;\\n  border-bottom-color: transparent;\\n  border-bottom-style: solid;\\n  border-bottom-width: 0;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: stretch;\\n  text-align: start;\\n  vertical-align: middle;\\n}\\n.igv-roi-menu-next-gen > div:last-child > div {\\n  height: 24px;\\n  padding-left: 4px;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n  border-bottom-color: #7f7f7f;\\n}\\n.igv-roi-menu-next-gen > div:last-child > div:not(:first-child):hover {\\n  background-color: rgba(127, 127, 127, 0.1);\\n}\\n.igv-roi-menu-next-gen > div:last-child div:first-child {\\n  font-style: italic;\\n  text-align: center;\\n  padding-right: 4px;\\n  white-space: nowrap;\\n  overflow: hidden;\\n  text-overflow: ellipsis;\\n}\\n.igv-roi-menu-next-gen > div:last-child > div:last-child {\\n  border-bottom-width: 0;\\n  border-bottom-color: transparent;\\n}\\n\\n.igv-roi-placeholder {\\n  font-style: normal;\\n  color: rgba(75, 75, 75, 0.6);\\n}\\n\\n.igv-roi-table {\\n  position: absolute;\\n  z-index: 1024;\\n  width: min-content;\\n  max-width: 1600px;\\n  border-color: #7f7f7f;\\n  border-radius: 4px;\\n  border-style: solid;\\n  border-width: thin;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 12px;\\n  font-weight: 400;\\n  background-color: white;\\n  display: flex;\\n  flex-flow: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: stretch;\\n  cursor: default;\\n}\\n.igv-roi-table > div {\\n  height: 24px;\\n  font-size: 14px;\\n  text-align: start;\\n  vertical-align: middle;\\n  line-height: 24px;\\n}\\n.igv-roi-table > div:first-child {\\n  border-color: transparent;\\n  border-top-left-radius: 4px;\\n  border-top-right-radius: 4px;\\n  border-top-width: 0;\\n  border-bottom-color: #7f7f7f;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n  background-color: #eee;\\n  cursor: move;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-between;\\n  align-items: center;\\n}\\n.igv-roi-table > div:first-child > div:first-child {\\n  text-align: center;\\n  white-space: nowrap;\\n  text-overflow: ellipsis;\\n  overflow: hidden;\\n  margin-left: 4px;\\n  margin-right: 4px;\\n  width: calc(100% - 4px - 12px);\\n}\\n.igv-roi-table > div:first-child > div:last-child {\\n  margin-right: 4px;\\n  margin-bottom: 2px;\\n  height: 12px;\\n  width: 12px;\\n  color: #7f7f7f;\\n}\\n.igv-roi-table > div:first-child > div:last-child > svg {\\n  display: block;\\n}\\n.igv-roi-table > div:first-child > div:last-child:hover {\\n  cursor: pointer;\\n  color: #444;\\n}\\n.igv-roi-table > .igv-roi-table-description {\\n  padding: 4px;\\n  margin-left: 4px;\\n  word-break: break-all;\\n  overflow-y: auto;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  background-color: transparent;\\n}\\n.igv-roi-table > .igv-roi-table-goto-explainer {\\n  margin-top: 5px;\\n  margin-left: 4px;\\n  color: #7F7F7F;\\n  font-style: italic;\\n  height: 24px;\\n  border-top: solid lightgray;\\n  background-color: transparent;\\n}\\n.igv-roi-table > .igv-roi-table-column-titles {\\n  height: 24px;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: stretch;\\n  align-items: stretch;\\n  padding-right: 16px;\\n  background-color: white;\\n  border-top-color: #7f7f7f;\\n  border-top-style: solid;\\n  border-top-width: thin;\\n  border-bottom-color: #7f7f7f;\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n}\\n.igv-roi-table > .igv-roi-table-column-titles > div {\\n  font-size: 14px;\\n  vertical-align: middle;\\n  line-height: 24px;\\n  text-align: left;\\n  margin-left: 4px;\\n  height: 24px;\\n  overflow: hidden;\\n  text-overflow: ellipsis;\\n  border-right-color: #7f7f7f;\\n  border-right-style: solid;\\n  border-right-width: thin;\\n}\\n.igv-roi-table > .igv-roi-table-column-titles > div:last-child {\\n  border-right: unset;\\n}\\n.igv-roi-table > .igv-roi-table-row-container {\\n  overflow: auto;\\n  resize: both;\\n  max-width: 1600px;\\n  height: 360px;\\n  background-color: transparent;\\n  display: flex;\\n  flex-flow: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: stretch;\\n}\\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row {\\n  height: 24px;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: stretch;\\n  align-items: stretch;\\n}\\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row > div {\\n  font-size: 14px;\\n  vertical-align: middle;\\n  line-height: 24px;\\n  text-align: left;\\n  margin-left: 4px;\\n  height: 24px;\\n  white-space: nowrap;\\n  overflow: hidden;\\n  text-overflow: ellipsis;\\n  border-right-color: transparent;\\n  border-right-style: solid;\\n  border-right-width: thin;\\n}\\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row > div:last-child {\\n  border-right: unset;\\n}\\n.igv-roi-table > .igv-roi-table-row-container > .igv-roi-table-row-hover {\\n  background-color: rgba(0, 0, 0, 0.04);\\n}\\n.igv-roi-table > div:last-child {\\n  height: 32px;\\n  line-height: 32px;\\n  border-top-color: #7f7f7f;\\n  border-top-style: solid;\\n  border-top-width: thin;\\n  border-bottom-color: transparent;\\n  border-bottom-left-radius: 4px;\\n  border-bottom-right-radius: 4px;\\n  border-bottom-width: 0;\\n  background-color: #eee;\\n  display: flex;\\n  flex-flow: row;\\n  flex-wrap: nowrap;\\n  justify-content: space-around;\\n  align-items: center;\\n}\\n\\n.igv-roi-table-row-selected {\\n  background-color: rgba(0, 0, 0, 0.125);\\n}\\n\\n.igv-roi-table-button {\\n  cursor: pointer;\\n  height: 20px;\\n  user-select: none;\\n  line-height: 20px;\\n  text-align: center;\\n  vertical-align: middle;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  font-size: 13px;\\n  font-weight: 400;\\n  color: black;\\n  padding-left: 6px;\\n  padding-right: 6px;\\n  background-color: rgb(239, 239, 239);\\n  border-color: black;\\n  border-style: solid;\\n  border-width: thin;\\n  border-radius: 3px;\\n}\\n\\n.igv-roi-table-button:hover {\\n  font-weight: 400;\\n  background-color: rgba(0, 0, 0, 0.13);\\n}\\n\\n.igv-roi-region {\\n  z-index: 64;\\n  position: absolute;\\n  top: 0;\\n  bottom: 0;\\n  pointer-events: none;\\n  overflow: visible;\\n  margin-top: 44px;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: stretch;\\n}\\n.igv-roi-region > div {\\n  position: relative;\\n  width: 100%;\\n  height: 8px;\\n  pointer-events: auto;\\n}\\n\\n.igv-roi-menu {\\n  position: absolute;\\n  z-index: 1024;\\n  width: 144px;\\n  border-color: #7f7f7f;\\n  border-radius: 4px;\\n  border-style: solid;\\n  border-width: thin;\\n  font-family: \\\"Open Sans\\\", sans-serif;\\n  background-color: white;\\n  display: flex;\\n  flex-flow: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: stretch;\\n}\\n.igv-roi-menu > div:not(:last-child) {\\n  border-bottom-color: rgba(128, 128, 128, 0.5);\\n  border-bottom-style: solid;\\n  border-bottom-width: thin;\\n}\\n.igv-roi-menu > div:first-child {\\n  border-top-left-radius: 4px;\\n  border-top-right-radius: 4px;\\n  border-top-color: transparent;\\n  border-top-style: solid;\\n  border-top-width: 0;\\n}\\n.igv-roi-menu > div:last-child {\\n  border-bottom-left-radius: 4px;\\n  border-bottom-right-radius: 4px;\\n  border-bottom-color: transparent;\\n  border-bottom-style: solid;\\n  border-bottom-width: 0;\\n}\\n\\n.igv-roi-menu-row {\\n  height: 24px;\\n  padding-left: 8px;\\n  font-size: small;\\n  text-align: start;\\n  vertical-align: middle;\\n  line-height: 24px;\\n  background-color: white;\\n}\\n\\n.igv-roi-menu-row-edit-description {\\n  width: -webkit-fill-available;\\n  font-size: small;\\n  text-align: start;\\n  vertical-align: middle;\\n  background-color: white;\\n  padding-left: 4px;\\n  padding-right: 4px;\\n  padding-bottom: 4px;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: stretch;\\n  align-items: stretch;\\n}\\n.igv-roi-menu-row-edit-description > label {\\n  margin-left: 2px;\\n  margin-bottom: 0;\\n  display: block;\\n  width: -webkit-fill-available;\\n}\\n.igv-roi-menu-row-edit-description > input {\\n  display: block;\\n  margin-left: 2px;\\n  margin-right: 2px;\\n  margin-bottom: 1px;\\n  width: -webkit-fill-available;\\n}\\n\\n.igv-container {\\n  position: relative;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-start;\\n  padding-top: 4px;\\n  user-select: none;\\n  -webkit-user-select: none;\\n  -ms-user-select: none;\\n}\\n\\n.igv-viewport {\\n  position: relative;\\n  margin-top: 5px;\\n  line-height: 1;\\n  overflow-x: hidden;\\n  overflow-y: hidden;\\n}\\n\\n.igv-viewport-content {\\n  position: relative;\\n  width: 100%;\\n}\\n.igv-viewport-content > canvas {\\n  position: relative;\\n  display: block;\\n}\\n\\n.igv-column-container {\\n  position: relative;\\n  display: flex;\\n  flex-direction: row;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: stretch;\\n  width: 100%;\\n}\\n\\n.igv-column-shim {\\n  width: 1px;\\n  margin-left: 2px;\\n  margin-right: 2px;\\n  background-color: #545453;\\n}\\n\\n.igv-column {\\n  position: relative;\\n  position: relative;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-start;\\n  box-sizing: border-box;\\n  height: 100%;\\n}\\n\\n.igv-axis-column {\\n  position: relative;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-start;\\n  box-sizing: border-box;\\n  height: 100%;\\n  width: 50px;\\n}\\n.igv-axis-column > div {\\n  margin-top: 5px;\\n  width: 100%;\\n}\\n\\n.igv-sample-name-column {\\n  position: relative;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-start;\\n  box-sizing: border-box;\\n  height: 100%;\\n}\\n\\n.igv-scrollbar-column {\\n  position: relative;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-start;\\n  box-sizing: border-box;\\n  height: 100%;\\n  width: 14px;\\n}\\n.igv-scrollbar-column > div {\\n  position: relative;\\n  margin-top: 5px;\\n  width: 14px;\\n}\\n.igv-scrollbar-column > div > div {\\n  cursor: pointer;\\n  position: absolute;\\n  top: 0;\\n  left: 2px;\\n  width: 8px;\\n  border-width: 1px;\\n  border-style: solid;\\n  border-color: #c4c4c4;\\n  border-top-left-radius: 4px;\\n  border-top-right-radius: 4px;\\n  border-bottom-left-radius: 4px;\\n  border-bottom-right-radius: 4px;\\n}\\n.igv-scrollbar-column > div > div:hover {\\n  background-color: #c4c4c4;\\n}\\n\\n.igv-track-drag-column {\\n  position: relative;\\n  display: flex;\\n  flex-direction: column;\\n  flex-wrap: nowrap;\\n  justify-content: flex-start;\\n  align-items: flex-start;\\n  box-sizing: border-box;\\n  height: 100%;\\n  width: 12px;\\n  background-color: white;\\n}\\n.igv-track-drag-column > .igv-track-drag-handle {\\n  z-index: 512;\\n  position: relative;\\n  cursor: pointer;\\n  margin-top: 5px;\\n  width: 100%;\\n  border-style: solid;\\n  border-width: 0;\\n  border-top-right-radius: 6px;\\n  border-bottom-right-radius: 6px;\\n  background-color: #c4c4c4;\\n}\\n.igv-track-drag-column .igv-track-drag-handle-hover {\\n  background-color: #787878;\\n}\\n.igv-track-drag-column > .igv-track-drag-shim {\\n  position: relative;\\n  margin-top: 5px;\\n  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\ No newline at end of file
diff --git a/igv_component/node_modules/igv/package.json b/igv_component/node_modules/igv/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..c9ddffbe9869a5bffd9d09aee64dcd975d9c6db6
--- /dev/null
+++ b/igv_component/node_modules/igv/package.json
@@ -0,0 +1,64 @@
+{
+  "name": "igv",
+  "version": "2.15.11",
+  "main": "dist/igv.esm.js",
+  "browser": "dist/igv.js",
+  "module": "dist/igv.esm.js",
+  "type": "module",
+  "description": "Embeddable genomic visualization component based on the Integrative Genomics Viewer",
+  "files": [
+    "dist/**"
+  ],
+  "scripts": {
+    "prepack": "npm run build",
+    "prepare": "npm run build",
+    "build": "node scripts/updateVersion.cjs && node scripts/generateEmbedCss.cjs && npx rollup --config",
+    "build_iife": "node scripts/updateVersion.cjs && node scripts/generateEmbedCss.cjs && npx rollup --config rollup.config.iife.js",
+    "updateCSS": "node scripts/generateEmbedCss.cjs",
+    "test": "node test/utils/forceESM.cjs && mocha -ui tdd"
+  },
+  "author": {
+    "name": "Jim Robinson"
+  },
+  "contributors": [
+    {
+      "name": "Douglass Turner"
+    }
+  ],
+  "bugs": {
+    "url": "https://github.com/igvteam/igv.js/issues"
+  },
+  "deprecated": false,
+  "homepage": "https://igv.org",
+  "keywords": [
+    "IGV",
+    "genomics",
+    "visualization",
+    "bioinformatics"
+  ],
+  "license": "MIT",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/igvteam/igv.js.git"
+  },
+  "browserslist": "> 1%, not dead",
+  "devDependencies": {
+    "html2canvas": "^1.4.1",
+    "@rollup/plugin-strip": "^3.0.1",
+    "@rollup/plugin-terser": "^0.4.0",
+    "@xmldom/xmldom": "^0.7.9",
+    "atob": "^2.1.2",
+    "btoa": "^1.2.1",
+    "chai": "^4.3.7",
+    "circular-view": "github:igvteam/circular-view#v0.2.4",
+    "eslint": "^6.4.0",
+    "hdf5-indexed-reader": "github:jrobinso/hdf5-indexed-reader#v0.5.2",
+    "igv-ui": "github:igvteam/igv-ui#v1.5.2",
+    "igv-utils": "github:igvteam/igv-utils#v1.4.8",
+    "mocha": "^10.2.0",
+    "rollup": "^2.66.0",
+    "rollup-plugin-copy": "^3.3.0",
+    "sass": "^1.45.1",
+    "w3c-xmlhttprequest": "^3.0.0"
+  }
+}
diff --git a/igv_component/node_modules/js-tokens/CHANGELOG.md b/igv_component/node_modules/js-tokens/CHANGELOG.md
new file mode 100644
index 0000000000000000000000000000000000000000..755e6f6ec82ec715a1bcb407608bbb6dab3ab7b7
--- /dev/null
+++ b/igv_component/node_modules/js-tokens/CHANGELOG.md
@@ -0,0 +1,151 @@
+### Version 4.0.0 (2018-01-28) ###
+
+- Added: Support for ES2018. The only change needed was recognizing the `s`
+  regex flag.
+- Changed: _All_ tokens returned by the `matchToToken` function now have a
+  `closed` property. It is set to `undefined` for the tokens where “closed”
+  doesn’t make sense. This means that all tokens objects have the same shape,
+  which might improve performance.
+
+These are the breaking changes:
+
+- `'/a/s'.match(jsTokens)` no longer returns `['/', 'a', '/', 's']`, but
+  `['/a/s']`. (There are of course other variations of this.)
+- Code that rely on some token objects not having the `closed` property could
+  now behave differently.
+
+
+### Version 3.0.2 (2017-06-28) ###
+
+- No code changes. Just updates to the readme.
+
+
+### Version 3.0.1 (2017-01-30) ###
+
+- Fixed: ES2015 unicode escapes with more than 6 hex digits are now matched
+  correctly.
+
+
+### Version 3.0.0 (2017-01-11) ###
+
+This release contains one breaking change, that should [improve performance in
+V8][v8-perf]:
+
+> So how can you, as a JavaScript developer, ensure that your RegExps are fast?
+> If you are not interested in hooking into RegExp internals, make sure that
+> neither the RegExp instance, nor its prototype is modified in order to get the
+> best performance:
+>
+> ```js
+> var re = /./g;
+> re.exec('');  // Fast path.
+> re.new_property = 'slow';
+> ```
+
+This module used to export a single regex, with `.matchToToken` bolted
+on, just like in the above example. This release changes the exports of
+the module to avoid this issue.
+
+Before:
+
+```js
+import jsTokens from "js-tokens"
+// or:
+var jsTokens = require("js-tokens")
+var matchToToken = jsTokens.matchToToken
+```
+
+After:
+
+```js
+import jsTokens, {matchToToken} from "js-tokens"
+// or:
+var jsTokens = require("js-tokens").default
+var matchToToken = require("js-tokens").matchToToken
+```
+
+[v8-perf]: http://v8project.blogspot.se/2017/01/speeding-up-v8-regular-expressions.html
+
+
+### Version 2.0.0 (2016-06-19) ###
+
+- Added: Support for ES2016. In other words, support for the `**` exponentiation
+  operator.
+
+These are the breaking changes:
+
+- `'**'.match(jsTokens)` no longer returns `['*', '*']`, but `['**']`.
+- `'**='.match(jsTokens)` no longer returns `['*', '*=']`, but `['**=']`.
+
+
+### Version 1.0.3 (2016-03-27) ###
+
+- Improved: Made the regex ever so slightly smaller.
+- Updated: The readme.
+
+
+### Version 1.0.2 (2015-10-18) ###
+
+- Improved: Limited npm package contents for a smaller download. Thanks to
+  @zertosh!
+
+
+### Version 1.0.1 (2015-06-20) ###
+
+- Fixed: Declared an undeclared variable.
+
+
+### Version 1.0.0 (2015-02-26) ###
+
+- Changed: Merged the 'operator' and 'punctuation' types into 'punctuator'. That
+  type is now equivalent to the Punctuator token in the ECMAScript
+  specification. (Backwards-incompatible change.)
+- Fixed: A `-` followed by a number is now correctly matched as a punctuator
+  followed by a number. It used to be matched as just a number, but there is no
+  such thing as negative number literals. (Possibly backwards-incompatible
+  change.)
+
+
+### Version 0.4.1 (2015-02-21) ###
+
+- Added: Support for the regex `u` flag.
+
+
+### Version 0.4.0 (2015-02-21) ###
+
+- Improved: `jsTokens.matchToToken` performance.
+- Added: Support for octal and binary number literals.
+- Added: Support for template strings.
+
+
+### Version 0.3.1 (2015-01-06) ###
+
+- Fixed: Support for unicode spaces. They used to be allowed in names (which is
+  very confusing), and some unicode newlines were wrongly allowed in strings and
+  regexes.
+
+
+### Version 0.3.0 (2014-12-19) ###
+
+- Changed: The `jsTokens.names` array has been replaced with the
+  `jsTokens.matchToToken` function. The capturing groups of `jsTokens` are no
+  longer part of the public API; instead use said function. See this [gist] for
+  an example. (Backwards-incompatible change.)
+- Changed: The empty string is now considered an “invalid” token, instead an
+  “empty” token (its own group). (Backwards-incompatible change.)
+- Removed: component support. (Backwards-incompatible change.)
+
+[gist]: https://gist.github.com/lydell/be49dbf80c382c473004
+
+
+### Version 0.2.0 (2014-06-19) ###
+
+- Changed: Match ES6 function arrows (`=>`) as an operator, instead of its own
+  category (“functionArrow”), for simplicity. (Backwards-incompatible change.)
+- Added: ES6 splats (`...`) are now matched as an operator (instead of three
+  punctuations). (Backwards-incompatible change.)
+
+
+### Version 0.1.0 (2014-03-08) ###
+
+- Initial release.
diff --git a/igv_component/node_modules/js-tokens/LICENSE b/igv_component/node_modules/js-tokens/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..54aef52f3a464e59316eca4068f24717a40b0ec0
--- /dev/null
+++ b/igv_component/node_modules/js-tokens/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014, 2015, 2016, 2017, 2018 Simon Lydell
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/igv_component/node_modules/js-tokens/README.md b/igv_component/node_modules/js-tokens/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..00cdf1634db1d9385ddb795e8814cd286cac43f6
--- /dev/null
+++ b/igv_component/node_modules/js-tokens/README.md
@@ -0,0 +1,240 @@
+Overview [![Build Status](https://travis-ci.org/lydell/js-tokens.svg?branch=master)](https://travis-ci.org/lydell/js-tokens)
+========
+
+A regex that tokenizes JavaScript.
+
+```js
+var jsTokens = require("js-tokens").default
+
+var jsString = "var foo=opts.foo;\n..."
+
+jsString.match(jsTokens)
+// ["var", " ", "foo", "=", "opts", ".", "foo", ";", "\n", ...]
+```
+
+
+Installation
+============
+
+`npm install js-tokens`
+
+```js
+import jsTokens from "js-tokens"
+// or:
+var jsTokens = require("js-tokens").default
+```
+
+
+Usage
+=====
+
+### `jsTokens` ###
+
+A regex with the `g` flag that matches JavaScript tokens.
+
+The regex _always_ matches, even invalid JavaScript and the empty string.
+
+The next match is always directly after the previous.
+
+### `var token = matchToToken(match)` ###
+
+```js
+import {matchToToken} from "js-tokens"
+// or:
+var matchToToken = require("js-tokens").matchToToken
+```
+
+Takes a `match` returned by `jsTokens.exec(string)`, and returns a `{type:
+String, value: String}` object. The following types are available:
+
+- string
+- comment
+- regex
+- number
+- name
+- punctuator
+- whitespace
+- invalid
+
+Multi-line comments and strings also have a `closed` property indicating if the
+token was closed or not (see below).
+
+Comments and strings both come in several flavors. To distinguish them, check if
+the token starts with `//`, `/*`, `'`, `"` or `` ` ``.
+
+Names are ECMAScript IdentifierNames, that is, including both identifiers and
+keywords. You may use [is-keyword-js] to tell them apart.
+
+Whitespace includes both line terminators and other whitespace.
+
+[is-keyword-js]: https://github.com/crissdev/is-keyword-js
+
+
+ECMAScript support
+==================
+
+The intention is to always support the latest ECMAScript version whose feature
+set has been finalized.
+
+If adding support for a newer version requires changes, a new version with a
+major verion bump will be released.
+
+Currently, ECMAScript 2018 is supported.
+
+
+Invalid code handling
+=====================
+
+Unterminated strings are still matched as strings. JavaScript strings cannot
+contain (unescaped) newlines, so unterminated strings simply end at the end of
+the line. Unterminated template strings can contain unescaped newlines, though,
+so they go on to the end of input.
+
+Unterminated multi-line comments are also still matched as comments. They
+simply go on to the end of the input.
+
+Unterminated regex literals are likely matched as division and whatever is
+inside the regex.
+
+Invalid ASCII characters have their own capturing group.
+
+Invalid non-ASCII characters are treated as names, to simplify the matching of
+names (except unicode spaces which are treated as whitespace). Note: See also
+the [ES2018](#es2018) section.
+
+Regex literals may contain invalid regex syntax. They are still matched as
+regex literals. They may also contain repeated regex flags, to keep the regex
+simple.
+
+Strings may contain invalid escape sequences.
+
+
+Limitations
+===========
+
+Tokenizing JavaScript using regexes—in fact, _one single regex_—won’t be
+perfect. But that’s not the point either.
+
+You may compare jsTokens with [esprima] by using `esprima-compare.js`.
+See `npm run esprima-compare`!
+
+[esprima]: http://esprima.org/
+
+### Template string interpolation ###
+
+Template strings are matched as single tokens, from the starting `` ` `` to the
+ending `` ` ``, including interpolations (whose tokens are not matched
+individually).
+
+Matching template string interpolations requires recursive balancing of `{` and
+`}`—something that JavaScript regexes cannot do. Only one level of nesting is
+supported.
+
+### Division and regex literals collision ###
+
+Consider this example:
+
+```js
+var g = 9.82
+var number = bar / 2/g
+
+var regex = / 2/g
+```
+
+A human can easily understand that in the `number` line we’re dealing with
+division, and in the `regex` line we’re dealing with a regex literal. How come?
+Because humans can look at the whole code to put the `/` characters in context.
+A JavaScript regex cannot. It only sees forwards. (Well, ES2018 regexes can also
+look backwards. See the [ES2018](#es2018) section).
+
+When the `jsTokens` regex scans throught the above, it will see the following
+at the end of both the `number` and `regex` rows:
+
+```js
+/ 2/g
+```
+
+It is then impossible to know if that is a regex literal, or part of an
+expression dealing with division.
+
+Here is a similar case:
+
+```js
+foo /= 2/g
+foo(/= 2/g)
+```
+
+The first line divides the `foo` variable with `2/g`. The second line calls the
+`foo` function with the regex literal `/= 2/g`. Again, since `jsTokens` only
+sees forwards, it cannot tell the two cases apart.
+
+There are some cases where we _can_ tell division and regex literals apart,
+though.
+
+First off, we have the simple cases where there’s only one slash in the line:
+
+```js
+var foo = 2/g
+foo /= 2
+```
+
+Regex literals cannot contain newlines, so the above cases are correctly
+identified as division. Things are only problematic when there are more than
+one non-comment slash in a single line.
+
+Secondly, not every character is a valid regex flag.
+
+```js
+var number = bar / 2/e
+```
+
+The above example is also correctly identified as division, because `e` is not a
+valid regex flag. I initially wanted to future-proof by allowing `[a-zA-Z]*`
+(any letter) as flags, but it is not worth it since it increases the amount of
+ambigous cases. So only the standard `g`, `m`, `i`, `y` and `u` flags are
+allowed. This means that the above example will be identified as division as
+long as you don’t rename the `e` variable to some permutation of `gmiyus` 1 to 6
+characters long.
+
+Lastly, we can look _forward_ for information.
+
+- If the token following what looks like a regex literal is not valid after a
+  regex literal, but is valid in a division expression, then the regex literal
+  is treated as division instead. For example, a flagless regex cannot be
+  followed by a string, number or name, but all of those three can be the
+  denominator of a division.
+- Generally, if what looks like a regex literal is followed by an operator, the
+  regex literal is treated as division instead. This is because regexes are
+  seldomly used with operators (such as `+`, `*`, `&&` and `==`), but division
+  could likely be part of such an expression.
+
+Please consult the regex source and the test cases for precise information on
+when regex or division is matched (should you need to know). In short, you
+could sum it up as:
+
+If the end of a statement looks like a regex literal (even if it isn’t), it
+will be treated as one. Otherwise it should work as expected (if you write sane
+code).
+
+### ES2018 ###
+
+ES2018 added some nice regex improvements to the language.
+
+- [Unicode property escapes] should allow telling names and invalid non-ASCII
+  characters apart without blowing up the regex size.
+- [Lookbehind assertions] should allow matching telling division and regex
+  literals apart in more cases.
+- [Named capture groups] might simplify some things.
+
+These things would be nice to do, but are not critical. They probably have to
+wait until the oldest maintained Node.js LTS release supports those features.
+
+[Unicode property escapes]: http://2ality.com/2017/07/regexp-unicode-property-escapes.html
+[Lookbehind assertions]: http://2ality.com/2017/05/regexp-lookbehind-assertions.html
+[Named capture groups]: http://2ality.com/2017/05/regexp-named-capture-groups.html
+
+
+License
+=======
+
+[MIT](LICENSE).
diff --git a/igv_component/node_modules/js-tokens/index.js b/igv_component/node_modules/js-tokens/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..b23a4a0e7f4527221c37e5f3d0b8176878f0f600
--- /dev/null
+++ b/igv_component/node_modules/js-tokens/index.js
@@ -0,0 +1,23 @@
+// Copyright 2014, 2015, 2016, 2017, 2018 Simon Lydell
+// License: MIT. (See LICENSE.)
+
+Object.defineProperty(exports, "__esModule", {
+  value: true
+})
+
+// This regex comes from regex.coffee, and is inserted here by generate-index.js
+// (run `npm run build`).
+exports.default = /((['"])(?:(?!\2|\\).|\\(?:\r\n|[\s\S]))*(\2)?|`(?:[^`\\$]|\\[\s\S]|\$(?!\{)|\$\{(?:[^{}]|\{[^}]*\}?)*\}?)*(`)?)|(\/\/.*)|(\/\*(?:[^*]|\*(?!\/))*(\*\/)?)|(\/(?!\*)(?:\[(?:(?![\]\\]).|\\.)*\]|(?![\/\]\\]).|\\.)+\/(?:(?!\s*(?:\b|[\u0080-\uFFFF$\\'"~({]|[+\-!](?!=)|\.?\d))|[gmiyus]{1,6}\b(?![\u0080-\uFFFF$\\]|\s*(?:[+\-*%&|^<>!=?({]|\/(?![\/*])))))|(0[xX][\da-fA-F]+|0[oO][0-7]+|0[bB][01]+|(?:\d*\.\d+|\d+\.?)(?:[eE][+-]?\d+)?)|((?!\d)(?:(?!\s)[$\w\u0080-\uFFFF]|\\u[\da-fA-F]{4}|\\u\{[\da-fA-F]+\})+)|(--|\+\+|&&|\|\||=>|\.{3}|(?:[+\-\/%&|^]|\*{1,2}|<{1,2}|>{1,3}|!=?|={1,2})=?|[?~.,:;[\](){}])|(\s+)|(^$|[\s\S])/g
+
+exports.matchToToken = function(match) {
+  var token = {type: "invalid", value: match[0], closed: undefined}
+       if (match[ 1]) token.type = "string" , token.closed = !!(match[3] || match[4])
+  else if (match[ 5]) token.type = "comment"
+  else if (match[ 6]) token.type = "comment", token.closed = !!match[7]
+  else if (match[ 8]) token.type = "regex"
+  else if (match[ 9]) token.type = "number"
+  else if (match[10]) token.type = "name"
+  else if (match[11]) token.type = "punctuator"
+  else if (match[12]) token.type = "whitespace"
+  return token
+}
diff --git a/igv_component/node_modules/js-tokens/package.json b/igv_component/node_modules/js-tokens/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..66752fab275101253f6ff42463b8765ad9e3ae41
--- /dev/null
+++ b/igv_component/node_modules/js-tokens/package.json
@@ -0,0 +1,30 @@
+{
+  "name": "js-tokens",
+  "version": "4.0.0",
+  "author": "Simon Lydell",
+  "license": "MIT",
+  "description": "A regex that tokenizes JavaScript.",
+  "keywords": [
+    "JavaScript",
+    "js",
+    "token",
+    "tokenize",
+    "regex"
+  ],
+  "files": [
+    "index.js"
+  ],
+  "repository": "lydell/js-tokens",
+  "scripts": {
+    "test": "mocha --ui tdd",
+    "esprima-compare": "node esprima-compare ./index.js everything.js/es5.js",
+    "build": "node generate-index.js",
+    "dev": "npm run build && npm test"
+  },
+  "devDependencies": {
+    "coffeescript": "2.1.1",
+    "esprima": "4.0.0",
+    "everything.js": "1.0.3",
+    "mocha": "5.0.0"
+  }
+}
diff --git a/igv_component/node_modules/json-bignum/.npmignore b/igv_component/node_modules/json-bignum/.npmignore
new file mode 100644
index 0000000000000000000000000000000000000000..2076d6c5c1fadf05440b59af1194c71c2eb65456
--- /dev/null
+++ b/igv_component/node_modules/json-bignum/.npmignore
@@ -0,0 +1,17 @@
+lib-cov
+*.seed
+*.log
+*.csv
+*.dat
+*.out
+*.pid
+*.gz
+
+pids
+logs
+results
+
+npm-debug.log
+
+*~
+/node_modules
diff --git a/igv_component/node_modules/json-bignum/LICENSE b/igv_component/node_modules/json-bignum/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..5116a0710bc87455b907acd6d9f53cd67039d0fa
--- /dev/null
+++ b/igv_component/node_modules/json-bignum/LICENSE
@@ -0,0 +1,19 @@
+Copyright (c) 2012-2013 Datalanche, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/igv_component/node_modules/json-bignum/README.md b/igv_component/node_modules/json-bignum/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..a016e82aee787d463e15eb3c533a0fb34141f242
--- /dev/null
+++ b/igv_component/node_modules/json-bignum/README.md
@@ -0,0 +1,73 @@
+json-bignum
+===========
+
+Node.js JSON replacement which handles 64-bit integers and arbitrary-precision decimals. It is a modified version of [Douglas Crockford's JSON library](https://github.com/douglascrockford/JSON-js). Although it can handle 64-bit integers and arbitrary-precision decimals, it is slower than the built-in JSON functions.
+
+## Install
+
+    $ npm install json-bignum
+
+## Usage
+
+### parse()
+
+```js
+var bignumJSON = require('json-bignum');
+
+var obj = bignumJSON.parse('{ "decimal": -9223372036854775807.4237482374983253298159 }');
+```
+
+### stringify()
+
+```js
+var bignumJSON = require('json-bignum');
+
+var obj = {
+    bigint: new bignumJSON.BigNumber('92233720368547758074237482374983253298159'),
+    decimal: new bignumJSON.BigNumber('-9223372036854775807.4237482374983253298159'),
+};
+
+console.log(bignumJSON.stringify(obj));
+```
+
+### BigNumber
+
+The ```BigNumber``` class simply stores the number as a string. It does not support arithmetic, but if you need that here are some excellent libraries.
+
+* [BigDecimal.js](https://github.com/iriscouch/bigdecimal.js): a literal port of Java's ```BigInteger``` and ```BigDecimal``` classes.
+* [bigint](https://github.com/substack/node-bigint): Big integer arithmetic using GMP.
+* [bignum](https://github.com/justmoon/node-bignum): Big integer arithmetic using OpenSSL.
+
+```js
+// example using BigDecimal.js
+
+var bignumJSON = require('json-bignum');
+var bigdecimal = require('bigdecimal');
+
+var jsonStr = '{"normal":-922337203.234,"big":-9223372036854775807.4237482374983253298159}';
+var jsonObj = bignumJSON.parse(jsonStr);
+
+var a = new bigdecimal.BigDecimal(jsonObj.normal.toString());
+var b = new bigdecimal.BigDecimal(jsonObj.big.toString());
+var sum = a.add(b);
+
+jsonObj.sum = new bignumJSON.BigNumber(sum.toString());
+
+console.log(bignumJSON.stringify(jsonObj));
+```
+
+## Caveats
+
+It is not recommended to mix calls to ```JSON``` and ```bignumJSON```. For example, ```JSON.stringify()``` does not know how to parse ```BigNumber```.
+
+## Benchmark
+
+Below shows the result of the benchmark on my machine.
+
+    $ node benchmark.js
+    10000 calls of JSON.parse():                                   26.746847 ms
+    10000 calls of JSON.stringify():                               20.824071 ms
+    10000 calls of bignumJSON.parse() with bignums in JSON:        221.945307 ms
+    10000 calls of bignumJSON.parse() without bignums in JSON:     150.626292 ms
+    10000 calls of bignumJSON.stringify() with bignums in JSON:    64.166056 ms
+    10000 calls of bignumJSON.stringify() without bignums in JSON: 61.860016 ms
diff --git a/igv_component/node_modules/json-bignum/benchmark.js b/igv_component/node_modules/json-bignum/benchmark.js
new file mode 100644
index 0000000000000000000000000000000000000000..11c95a2cd2079dfb40e812bcf50dd5103a34e286
--- /dev/null
+++ b/igv_component/node_modules/json-bignum/benchmark.js
@@ -0,0 +1,103 @@
+var bignumJSON = require('./lib');
+
+var iterations = 10000;
+var bignumJsonStr = '{ \
+    "bigint": 92233720368547758074237, \
+    "decimal": -9223372036854775807.4237482374983253298159, \
+    "string": "hello world", \
+    "boolean": true, \
+    "array": [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ], \
+    "object": { \
+        "int": 15, \
+        "float": 15.56 \
+    } \
+}';
+var jsonStr = '{ \
+    "int": 9223372, \
+    "float": -0.4237482, \
+    "string": "hello world", \
+    "boolean": true, \
+    "array": [ 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ], \
+    "object": { \
+        "int": 15, \
+        "float": 15.56 \
+    } \
+}';
+
+// dont count first call
+var jsonObj = JSON.parse(bignumJsonStr);
+var bignumObj = bignumJSON.parse(bignumJsonStr);
+JSON.stringify(jsonObj);
+bignumJSON.stringify(bignumObj);
+
+// test JSON.parse
+
+var startTime = process.hrtime();
+
+for (var i = 0; i < iterations; i++) {
+    JSON.parse(bignumJsonStr);
+}
+
+var diffTime = process.hrtime(startTime);
+diffTime = (diffTime[0] * 1e9 + diffTime[1]) / 1e6;
+console.log(iterations + ' calls of JSON.parse():                                   ' + diffTime.toString() + ' ms');
+
+// test JSON.stringify
+
+startTime = process.hrtime();
+
+for (var i = 0; i < iterations; i++) {
+    JSON.stringify(jsonObj);
+}
+
+diffTime = process.hrtime(startTime);
+diffTime = (diffTime[0] * 1e9 + diffTime[1]) / 1e6;
+console.log(iterations + ' calls of JSON.stringify():                               ' + diffTime.toString() + ' ms');
+
+// test bignumJSON.parse with bignums
+
+startTime = process.hrtime();
+
+for (var i = 0; i < iterations; i++) {
+    bignumJSON.parse(bignumJsonStr);
+}
+
+diffTime = process.hrtime(startTime);
+diffTime = (diffTime[0] * 1e9 + diffTime[1]) / 1e6;
+console.log(iterations + ' calls of bignumJSON.parse() with bignums in JSON:        ' + diffTime.toString() + ' ms');
+
+// test bignumJSON.parse without bignums
+
+startTime = process.hrtime();
+
+for (var i = 0; i < iterations; i++) {
+    bignumJSON.parse(jsonStr);
+}
+
+diffTime = process.hrtime(startTime);
+diffTime = (diffTime[0] * 1e9 + diffTime[1]) / 1e6;
+console.log(iterations + ' calls of bignumJSON.parse() without bignums in JSON:     ' + diffTime.toString() + ' ms');
+
+// test bignumJSON.stringify with bignums
+
+startTime = process.hrtime();
+
+for (var i = 0; i < iterations; i++) {
+    bignumJSON.stringify(bignumObj);
+}
+
+diffTime = process.hrtime(startTime);
+diffTime = (diffTime[0] * 1e9 + diffTime[1]) / 1e6;
+console.log(iterations + ' calls of bignumJSON.stringify() with bignums in JSON:    ' + diffTime.toString() + ' ms');
+
+// test bignumJSON.stringify without bignums
+
+startTime = process.hrtime();
+
+for (var i = 0; i < iterations; i++) {
+    bignumJSON.stringify(jsonObj);
+}
+
+diffTime = process.hrtime(startTime);
+diffTime = (diffTime[0] * 1e9 + diffTime[1]) / 1e6;
+console.log(iterations + ' calls of bignumJSON.stringify() without bignums in JSON: ' + diffTime.toString() + ' ms');
diff --git a/igv_component/node_modules/json-bignum/example.js b/igv_component/node_modules/json-bignum/example.js
new file mode 100644
index 0000000000000000000000000000000000000000..67c3afcd5308db15e81d6b5d43c7b58c7b09f543
--- /dev/null
+++ b/igv_component/node_modules/json-bignum/example.js
@@ -0,0 +1,11 @@
+var bignumJSON = require('./lib');
+
+var testDecimal = '{"normal":-922337203.234,"big":-9223372036854775807.4237482374983253298159}';
+console.log('\ntestDecimal:                   ' + testDecimal);
+console.log('JSON.parse(testDecimal):       ' + JSON.stringify(JSON.parse(testDecimal)));
+console.log('bignumJSON.parse(testDecimal): ' + bignumJSON.stringify(bignumJSON.parse(testDecimal)));
+
+var testInteger = '{"normal":-922337203,"big":-92233720368547758074237482374983253298159}';
+console.log('\ntestInteger:                   ' + testInteger);
+console.log('JSON.parse(testInteger):       ' + JSON.stringify(JSON.parse(testInteger)));
+console.log('bignumJSON.parse(testInteger): ' + bignumJSON.stringify(bignumJSON.parse(testInteger)));
diff --git a/igv_component/node_modules/json-bignum/lib/bignumber.js b/igv_component/node_modules/json-bignum/lib/bignumber.js
new file mode 100644
index 0000000000000000000000000000000000000000..438ced219dfbbc31aa3ae53e0a8e35193cf04173
--- /dev/null
+++ b/igv_component/node_modules/json-bignum/lib/bignumber.js
@@ -0,0 +1,19 @@
+var util = require('util');
+
+// wraps a large number, does not support arithmetic
+
+function BigNumber(number) {
+    this.numberStr = number.toString();
+
+    // not a number
+    if (isNaN(parseFloat(this.numberStr)) === true
+        || isFinite(this.numberStr) === false) {
+        throw new Error(number + ' is not a number');
+    }
+}
+util.inherits(BigNumber, Object);
+module.exports = BigNumber;
+
+BigNumber.prototype.toString = function() {
+    return this.numberStr;
+}
diff --git a/igv_component/node_modules/json-bignum/lib/index.js b/igv_component/node_modules/json-bignum/lib/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..028b7d2977cdddd7df381de8ae5ff4f6856b3bd7
--- /dev/null
+++ b/igv_component/node_modules/json-bignum/lib/index.js
@@ -0,0 +1,5 @@
+var bignumJSON = require('./json.js');
+
+exports.BigNumber = require('./bignumber.js');
+exports.parse = bignumJSON.parse;
+exports.stringify = bignumJSON.stringify;
diff --git a/igv_component/node_modules/json-bignum/lib/json.js b/igv_component/node_modules/json-bignum/lib/json.js
new file mode 100644
index 0000000000000000000000000000000000000000..53ade99281ea78abd57602c4b23fa71e21832ec9
--- /dev/null
+++ b/igv_component/node_modules/json-bignum/lib/json.js
@@ -0,0 +1,591 @@
+/*
+    json_parse.js
+    2012-06-20
+
+    Public Domain.
+
+    NO WARRANTY EXPRESSED OR IMPLIED. USE AT YOUR OWN RISK.
+
+    This file creates a json_parse function.
+
+        json_parse(text, reviver)
+            This method parses a JSON text to produce an object or array.
+            It can throw a SyntaxError exception.
+
+            The optional reviver parameter is a function that can filter and
+            transform the results. It receives each of the keys and values,
+            and its return value is used instead of the original value.
+            If it returns what it received, then the structure is not modified.
+            If it returns undefined then the member is deleted.
+
+            Example:
+
+            // Parse the text. Values that look like ISO date strings will
+            // be converted to Date objects.
+
+            myData = json_parse(text, function (key, value) {
+                var a;
+                if (typeof value === 'string') {
+                    a =
+/^(\d{4})-(\d{2})-(\d{2})T(\d{2}):(\d{2}):(\d{2}(?:\.\d*)?)Z$/.exec(value);
+                    if (a) {
+                        return new Date(Date.UTC(+a[1], +a[2] - 1, +a[3], +a[4],
+                            +a[5], +a[6]));
+                    }
+                }
+                return value;
+            });
+
+    This is a reference implementation. You are free to copy, modify, or
+    redistribute.
+
+    This code should be minified before deployment.
+    See http://javascript.crockford.com/jsmin.html
+
+    USE YOUR OWN COPY. IT IS EXTREMELY UNWISE TO LOAD CODE FROM SERVERS YOU DO
+    NOT CONTROL.
+*/
+
+/*members "", "\"", "\/", "\\", at, b, call, charAt, f, fromCharCode,
+    hasOwnProperty, message, n, name, prototype, push, r, t, text
+*/
+var BigNumber = require('./bignumber.js');
+
+function f(n) {
+    // Format integers to have at least two digits.
+    return n < 10 ? '0' + n : n;
+}
+
+var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
+    escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,
+    gap,
+    indent,
+    meta = {    // table of character substitutions
+        '\b': '\\b',
+        '\t': '\\t',
+        '\n': '\\n',
+        '\f': '\\f',
+        '\r': '\\r',
+        '"' : '\\"',
+        '\\': '\\\\'
+    },
+    rep;
+
+function quote(string) {
+
+    // If the string contains no control characters, no quote characters, and no
+    // backslash characters, then we can safely slap some quotes around it.
+    // Otherwise we must also replace the offending characters with safe escape
+    // sequences.
+
+    escapable.lastIndex = 0;
+    return escapable.test(string) ? '"' + string.replace(escapable, function (a) {
+        var c = meta[a];
+        return typeof c === 'string'
+            ? c
+            : '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);
+    }) + '"' : '"' + string + '"';
+}
+
+function str(key, holder) {
+
+    // Produce a string from holder[key].
+
+    var i,          // The loop counter.
+        k,          // The member key.
+        v,          // The member value.
+        length,
+        mind = gap,
+        partial,
+        value = holder[key];
+
+    // If the value has a toJSON method, call it to obtain a replacement value.
+
+    if (value && typeof value === 'object' &&
+            typeof value.toJSON === 'function') {
+        value = value.toJSON(key);
+    }
+
+    // If we were called with a replacer function, then call the replacer to
+    // obtain a replacement value.
+
+    if (typeof rep === 'function') {
+        value = rep.call(holder, key, value);
+    }
+
+    // What happens next depends on the value's type.
+
+    switch (typeof value) {
+    case 'string':
+        return quote(value);
+
+    case 'number':
+
+        // JSON numbers must be finite. Encode non-finite numbers as null.
+
+        return isFinite(value) ? String(value) : 'null';
+
+    case 'boolean':
+    case 'null':
+
+        // If the value is a boolean or null, convert it to a string. Note:
+        // typeof null does not produce 'null'. The case is included here in
+        // the remote chance that this gets fixed someday.
+
+        return String(value);
+
+    // If the type is 'object', we might be dealing with an object or an array or
+    // null.
+
+    case 'object':
+
+        // Due to a specification blunder in ECMAScript, typeof null is 'object',
+        // so watch out for that case.
+
+        if (!value) {
+            return 'null';
+        }
+
+        // Handle big numbers.
+
+        if (value instanceof BigNumber) {
+            return value.toString();
+        }
+
+        // Make an array to hold the partial results of stringifying this object value.
+
+        gap += indent;
+        partial = [];
+
+        // Is the value an array?
+
+        if (Object.prototype.toString.apply(value) === '[object Array]') {
+
+            // The value is an array. Stringify every element. Use null as a placeholder
+            // for non-JSON values.
+
+            length = value.length;
+            for (i = 0; i < length; i += 1) {
+                partial[i] = str(i, value) || 'null';
+            }
+
+            // Join all of the elements together, separated with commas, and wrap them in
+            // brackets.
+
+            v = partial.length === 0
+                ? '[]'
+                : gap
+                ? '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']'
+                : '[' + partial.join(',') + ']';
+            gap = mind;
+            return v;
+        }
+
+        // If the replacer is an array, use it to select the members to be stringified.
+
+        if (rep && typeof rep === 'object') {
+            length = rep.length;
+            for (i = 0; i < length; i += 1) {
+                if (typeof rep[i] === 'string') {
+                    k = rep[i];
+                    v = str(k, value);
+                    if (v) {
+                        partial.push(quote(k) + (gap ? ': ' : ':') + v);
+                    }
+                }
+            }
+        } else {
+
+        // Otherwise, iterate through all of the keys in the object.
+
+            for (k in value) {
+
+                if (Object.prototype.hasOwnProperty.call(value, k)) {
+                    v = str(k, value);
+                    if (v) {
+                        partial.push(quote(k) + (gap ? ': ' : ':') + v);
+                    }
+                }
+            }
+        }
+
+        // Join all of the member texts together, separated with commas,
+        // and wrap them in braces.
+
+        v = partial.length === 0
+            ? '{}'
+            : gap
+            ? '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}'
+            : '{' + partial.join(',') + '}';
+        gap = mind;
+        return v;
+    }
+}
+
+exports.stringify = function(value, replacer, space) {
+
+    // The stringify method takes a value and an optional replacer, and an optional
+    // space parameter, and returns a JSON text. The replacer can be a function
+    // that can replace values, or an array of strings that will select the keys.
+    // A default replacer method can be provided. Use of the space parameter can
+    // produce text that is more easily readable.
+
+    var i;
+    gap = '';
+    indent = '';
+
+    // If the space parameter is a number, make an indent string containing that
+    // many spaces.
+
+    if (typeof space === 'number') {
+        for (i = 0; i < space; i += 1) {
+            indent += ' ';
+        }
+
+    // If the space parameter is a string, it will be used as the indent string.
+
+    } else if (typeof space === 'string') {
+        indent = space;
+    }
+
+    // If there is a replacer, it must be a function or an array.
+    // Otherwise, throw an error.
+
+    rep = replacer;
+    if (replacer && typeof replacer !== 'function' &&
+            (typeof replacer !== 'object' ||
+            typeof replacer.length !== 'number')) {
+        throw new Error('bignumJSON.stringify');
+    }
+
+    // Make a fake root object containing our value under the key of ''.
+    // Return the result of stringifying the value.
+
+    return str('', {'': value});
+}
+
+exports.parse = (function () {
+    "use strict";
+
+// This is a function that can parse a JSON text, producing a JavaScript
+// data structure. It is a simple, recursive descent parser. It does not use
+// eval or regular expressions, so it can be used as a model for implementing
+// a JSON parser in other languages.
+
+// We are defining the function inside of another function to avoid creating
+// global variables.
+
+    var at,     // The index of the current character
+        ch,     // The current character
+        escapee = {
+            '"':  '"',
+            '\\': '\\',
+            '/':  '/',
+            b:    '\b',
+            f:    '\f',
+            n:    '\n',
+            r:    '\r',
+            t:    '\t'
+        },
+        text,
+
+// If true, duplicate properties are allowed and the last definition will be used
+// e.g. '{"hello": "world1", "hello": "world2"}' -> {"hello": "world2"}
+// If false, duplicate properties result in a SyntaxError.
+        allowDuplicateProperties = true,
+
+        error = function (m) {
+
+// Call error when something is wrong.
+
+            throw {
+                name:    'SyntaxError',
+                message: m,
+                at:      at,
+                text:    text
+            };
+        },
+
+        next = function (c) {
+
+// If a c parameter is provided, verify that it matches the current character.
+
+            if (c && c !== ch) {
+                error("Expected '" + c + "' instead of '" + ch + "'");
+            }
+
+// Get the next character. When there are no more characters,
+// return the empty string.
+
+            ch = text.charAt(at);
+            at += 1;
+            return ch;
+        },
+
+        number = function () {
+
+// Parse a number value.
+
+            var number,
+                string = '';
+
+            if (ch === '-') {
+                string = '-';
+                next('-');
+            }
+            while (ch >= '0' && ch <= '9') {
+                string += ch;
+                next();
+            }
+            if (ch === '.') {
+                string += '.';
+                while (next() && ch >= '0' && ch <= '9') {
+                    string += ch;
+                }
+            }
+            if (ch === 'e' || ch === 'E') {
+                string += ch;
+                next();
+                if (ch === '-' || ch === '+') {
+                    string += ch;
+                    next();
+                }
+                while (ch >= '0' && ch <= '9') {
+                    string += ch;
+                    next();
+                }
+            }
+
+            number = +string;
+
+            if (!isFinite(number)) {
+                error("Bad number");
+            } else {
+                
+                // means JS rounded or truncated number, too big
+                if (number.toString() !== string) {
+                    try {
+                        return new BigNumber(string);
+                    } catch (e) {
+                        // if fails, fallback to default behavior
+                    }
+                }
+
+                return number;
+            }
+        },
+
+        string = function () {
+
+// Parse a string value.
+
+            var hex,
+                i,
+                string = '',
+                uffff;
+
+// When parsing for string values, we must look for " and \ characters.
+
+            if (ch === '"') {
+                while (next()) {
+                    if (ch === '"') {
+                        next();
+                        return string;
+                    }
+                    if (ch === '\\') {
+                        next();
+                        if (ch === 'u') {
+                            uffff = 0;
+                            for (i = 0; i < 4; i += 1) {
+                                hex = parseInt(next(), 16);
+                                if (!isFinite(hex)) {
+                                    break;
+                                }
+                                uffff = uffff * 16 + hex;
+                            }
+                            string += String.fromCharCode(uffff);
+                        } else if (typeof escapee[ch] === 'string') {
+                            string += escapee[ch];
+                        } else {
+                            break;
+                        }
+                    } else {
+                        string += ch;
+                    }
+                }
+            }
+            error("Bad string");
+        },
+
+        white = function () {
+
+// Skip whitespace.
+
+            while (ch && ch <= ' ') {
+                next();
+            }
+        },
+
+        word = function () {
+
+// true, false, or null.
+
+            switch (ch) {
+            case 't':
+                next('t');
+                next('r');
+                next('u');
+                next('e');
+                return true;
+            case 'f':
+                next('f');
+                next('a');
+                next('l');
+                next('s');
+                next('e');
+                return false;
+            case 'n':
+                next('n');
+                next('u');
+                next('l');
+                next('l');
+                return null;
+            }
+            error("Unexpected '" + ch + "'");
+        },
+
+        value,  // Place holder for the value function.
+
+        array = function () {
+
+// Parse an array value.
+
+            var array = [];
+
+            if (ch === '[') {
+                next('[');
+                white();
+                if (ch === ']') {
+                    next(']');
+                    return array;   // empty array
+                }
+                while (ch) {
+                    array.push(value());
+                    white();
+                    if (ch === ']') {
+                        next(']');
+                        return array;
+                    }
+                    next(',');
+                    white();
+                }
+            }
+            error("Bad array");
+        },
+
+        object = function () {
+
+// Parse an object value.
+
+            var key,
+                object = {};
+
+            if (ch === '{') {
+                next('{');
+                white();
+                if (ch === '}') {
+                    next('}');
+                    return object;   // empty object
+                }
+                while (ch) {
+                    key = string();
+                    white();
+                    next(':');
+                    if (!allowDuplicateProperties &&
+                        Object.hasOwnProperty.call(object, key)) {
+                        error('Duplicate key "' + key + '"');
+                    }
+                    object[key] = value();
+                    white();
+                    if (ch === '}') {
+                        next('}');
+                        return object;
+                    }
+                    next(',');
+                    white();
+                }
+            }
+            error("Bad object");
+        };
+
+    value = function () {
+
+// Parse a JSON value. It could be an object, an array, a string, a number,
+// or a word.
+
+        white();
+        switch (ch) {
+        case '{':
+            return object();
+        case '[':
+            return array();
+        case '"':
+            return string();
+        case '-':
+            return number();
+        default:
+            return ch >= '0' && ch <= '9' ? number() : word();
+        }
+    };
+
+// Return the json_parse function. It will have access to all of the above
+// functions and variables.
+
+    return function (source, reviver, _allowDuplicateProperties) {
+        var result;
+        
+        if (_allowDuplicateProperties !== undefined) {
+            allowDuplicateProperties = _allowDuplicateProperties;
+        }
+
+        text = source;
+        at = 0;
+        ch = ' ';
+        result = value();
+        white();
+        if (ch) {
+            error("Syntax error");
+        }
+
+// If there is a reviver function, we recursively walk the new structure,
+// passing each name/value pair to the reviver function for possible
+// transformation, starting with a temporary root object that holds the result
+// in an empty key. If there is not a reviver function, we simply return the
+// result.
+
+        var ret = typeof reviver === 'function'
+            ? (function walk(holder, key) {
+                var k, v, value = holder[key];
+                if (value && typeof value === 'object') {
+                    for (k in value) {
+                        if (Object.prototype.hasOwnProperty.call(value, k)) {
+                            v = walk(value, k);
+                            if (v !== undefined) {
+                                value[k] = v;
+                            } else {
+                                delete value[k];
+                            }
+                        }
+                    }
+                }
+                return reviver.call(holder, key, value);
+            }({'': result}, ''))
+            : result;
+
+// Set text to null so we don't retain a reference to the original text
+// after this function returns.
+
+        text = null;
+        return ret;
+    };
+}());
diff --git a/igv_component/node_modules/json-bignum/package.json b/igv_component/node_modules/json-bignum/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..b90f157e2b1b648ee71e4efa5605f7a0ee2c0069
--- /dev/null
+++ b/igv_component/node_modules/json-bignum/package.json
@@ -0,0 +1,27 @@
+{
+    "author": {
+        "name": "Datalanche, Inc.",
+        "url": "https://www.datalanche.com"
+    },
+    "name": "json-bignum",
+    "homepage": "https://github.com/datalanche/json-bignum",
+    "description": "Node.js JSON replacement which handles 64-bit integers and arbitrary-precision decimals.",
+    "version": "0.0.3",
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/datalanche/json-bignum.git"
+    },
+    "main": "lib/index.js",
+    "directories": {
+        "lib": "./lib"
+    },
+    "licenses": [
+        {
+            "type": "MIT",
+            "url": "https://github.com/datalanche/json-bignum/raw/master/LICENSE"
+        }
+    ],
+    "engines": {
+        "node": ">=0.8"
+    }
+}
diff --git a/igv_component/node_modules/lodash.camelcase/LICENSE b/igv_component/node_modules/lodash.camelcase/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..e0c69d56032d1562a06c0caa8ab8b278efded3c0
--- /dev/null
+++ b/igv_component/node_modules/lodash.camelcase/LICENSE
@@ -0,0 +1,47 @@
+Copyright jQuery Foundation and other contributors <https://jquery.org/>
+
+Based on Underscore.js, copyright Jeremy Ashkenas,
+DocumentCloud and Investigative Reporters & Editors <http://underscorejs.org/>
+
+This software consists of voluntary contributions made by many
+individuals. For exact contribution history, see the revision history
+available at https://github.com/lodash/lodash
+
+The following license applies to all parts of this software except as
+documented below:
+
+====
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+"Software"), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
+NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
+LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
+OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
+WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
+====
+
+Copyright and related rights for sample code are waived via CC0. Sample
+code is defined as all source code displayed within the prose of the
+documentation.
+
+CC0: http://creativecommons.org/publicdomain/zero/1.0/
+
+====
+
+Files located in the node_modules and vendor directories are externally
+maintained libraries used by this software which have their own
+licenses; we recommend you read them, as their terms may differ from the
+terms above.
diff --git a/igv_component/node_modules/lodash.camelcase/README.md b/igv_component/node_modules/lodash.camelcase/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..333d437cb472c9a120d0fc49ff2d3f33484b0db2
--- /dev/null
+++ b/igv_component/node_modules/lodash.camelcase/README.md
@@ -0,0 +1,18 @@
+# lodash.camelcase v4.3.0
+
+The [lodash](https://lodash.com/) method `_.camelCase` exported as a [Node.js](https://nodejs.org/) module.
+
+## Installation
+
+Using npm:
+```bash
+$ {sudo -H} npm i -g npm
+$ npm i --save lodash.camelcase
+```
+
+In Node.js:
+```js
+var camelCase = require('lodash.camelcase');
+```
+
+See the [documentation](https://lodash.com/docs#camelCase) or [package source](https://github.com/lodash/lodash/blob/4.3.0-npm-packages/lodash.camelcase) for more details.
diff --git a/igv_component/node_modules/lodash.camelcase/index.js b/igv_component/node_modules/lodash.camelcase/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..b6d8b3cf9f26d7734d03f1261b6780f8f5ae2031
--- /dev/null
+++ b/igv_component/node_modules/lodash.camelcase/index.js
@@ -0,0 +1,599 @@
+/**
+ * lodash (Custom Build) <https://lodash.com/>
+ * Build: `lodash modularize exports="npm" -o ./`
+ * Copyright jQuery Foundation and other contributors <https://jquery.org/>
+ * Released under MIT license <https://lodash.com/license>
+ * Based on Underscore.js 1.8.3 <http://underscorejs.org/LICENSE>
+ * Copyright Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors
+ */
+
+/** Used as references for various `Number` constants. */
+var INFINITY = 1 / 0;
+
+/** `Object#toString` result references. */
+var symbolTag = '[object Symbol]';
+
+/** Used to match words composed of alphanumeric characters. */
+var reAsciiWord = /[^\x00-\x2f\x3a-\x40\x5b-\x60\x7b-\x7f]+/g;
+
+/** Used to match Latin Unicode letters (excluding mathematical operators). */
+var reLatin = /[\xc0-\xd6\xd8-\xf6\xf8-\xff\u0100-\u017f]/g;
+
+/** Used to compose unicode character classes. */
+var rsAstralRange = '\\ud800-\\udfff',
+    rsComboMarksRange = '\\u0300-\\u036f\\ufe20-\\ufe23',
+    rsComboSymbolsRange = '\\u20d0-\\u20f0',
+    rsDingbatRange = '\\u2700-\\u27bf',
+    rsLowerRange = 'a-z\\xdf-\\xf6\\xf8-\\xff',
+    rsMathOpRange = '\\xac\\xb1\\xd7\\xf7',
+    rsNonCharRange = '\\x00-\\x2f\\x3a-\\x40\\x5b-\\x60\\x7b-\\xbf',
+    rsPunctuationRange = '\\u2000-\\u206f',
+    rsSpaceRange = ' \\t\\x0b\\f\\xa0\\ufeff\\n\\r\\u2028\\u2029\\u1680\\u180e\\u2000\\u2001\\u2002\\u2003\\u2004\\u2005\\u2006\\u2007\\u2008\\u2009\\u200a\\u202f\\u205f\\u3000',
+    rsUpperRange = 'A-Z\\xc0-\\xd6\\xd8-\\xde',
+    rsVarRange = '\\ufe0e\\ufe0f',
+    rsBreakRange = rsMathOpRange + rsNonCharRange + rsPunctuationRange + rsSpaceRange;
+
+/** Used to compose unicode capture groups. */
+var rsApos = "['\u2019]",
+    rsAstral = '[' + rsAstralRange + ']',
+    rsBreak = '[' + rsBreakRange + ']',
+    rsCombo = '[' + rsComboMarksRange + rsComboSymbolsRange + ']',
+    rsDigits = '\\d+',
+    rsDingbat = '[' + rsDingbatRange + ']',
+    rsLower = '[' + rsLowerRange + ']',
+    rsMisc = '[^' + rsAstralRange + rsBreakRange + rsDigits + rsDingbatRange + rsLowerRange + rsUpperRange + ']',
+    rsFitz = '\\ud83c[\\udffb-\\udfff]',
+    rsModifier = '(?:' + rsCombo + '|' + rsFitz + ')',
+    rsNonAstral = '[^' + rsAstralRange + ']',
+    rsRegional = '(?:\\ud83c[\\udde6-\\uddff]){2}',
+    rsSurrPair = '[\\ud800-\\udbff][\\udc00-\\udfff]',
+    rsUpper = '[' + rsUpperRange + ']',
+    rsZWJ = '\\u200d';
+
+/** Used to compose unicode regexes. */
+var rsLowerMisc = '(?:' + rsLower + '|' + rsMisc + ')',
+    rsUpperMisc = '(?:' + rsUpper + '|' + rsMisc + ')',
+    rsOptLowerContr = '(?:' + rsApos + '(?:d|ll|m|re|s|t|ve))?',
+    rsOptUpperContr = '(?:' + rsApos + '(?:D|LL|M|RE|S|T|VE))?',
+    reOptMod = rsModifier + '?',
+    rsOptVar = '[' + rsVarRange + ']?',
+    rsOptJoin = '(?:' + rsZWJ + '(?:' + [rsNonAstral, rsRegional, rsSurrPair].join('|') + ')' + rsOptVar + reOptMod + ')*',
+    rsSeq = rsOptVar + reOptMod + rsOptJoin,
+    rsEmoji = '(?:' + [rsDingbat, rsRegional, rsSurrPair].join('|') + ')' + rsSeq,
+    rsSymbol = '(?:' + [rsNonAstral + rsCombo + '?', rsCombo, rsRegional, rsSurrPair, rsAstral].join('|') + ')';
+
+/** Used to match apostrophes. */
+var reApos = RegExp(rsApos, 'g');
+
+/**
+ * Used to match [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks) and
+ * [combining diacritical marks for symbols](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks_for_Symbols).
+ */
+var reComboMark = RegExp(rsCombo, 'g');
+
+/** Used to match [string symbols](https://mathiasbynens.be/notes/javascript-unicode). */
+var reUnicode = RegExp(rsFitz + '(?=' + rsFitz + ')|' + rsSymbol + rsSeq, 'g');
+
+/** Used to match complex or compound words. */
+var reUnicodeWord = RegExp([
+  rsUpper + '?' + rsLower + '+' + rsOptLowerContr + '(?=' + [rsBreak, rsUpper, '$'].join('|') + ')',
+  rsUpperMisc + '+' + rsOptUpperContr + '(?=' + [rsBreak, rsUpper + rsLowerMisc, '$'].join('|') + ')',
+  rsUpper + '?' + rsLowerMisc + '+' + rsOptLowerContr,
+  rsUpper + '+' + rsOptUpperContr,
+  rsDigits,
+  rsEmoji
+].join('|'), 'g');
+
+/** Used to detect strings with [zero-width joiners or code points from the astral planes](http://eev.ee/blog/2015/09/12/dark-corners-of-unicode/). */
+var reHasUnicode = RegExp('[' + rsZWJ + rsAstralRange  + rsComboMarksRange + rsComboSymbolsRange + rsVarRange + ']');
+
+/** Used to detect strings that need a more robust regexp to match words. */
+var reHasUnicodeWord = /[a-z][A-Z]|[A-Z]{2,}[a-z]|[0-9][a-zA-Z]|[a-zA-Z][0-9]|[^a-zA-Z0-9 ]/;
+
+/** Used to map Latin Unicode letters to basic Latin letters. */
+var deburredLetters = {
+  // Latin-1 Supplement block.
+  '\xc0': 'A',  '\xc1': 'A', '\xc2': 'A', '\xc3': 'A', '\xc4': 'A', '\xc5': 'A',
+  '\xe0': 'a',  '\xe1': 'a', '\xe2': 'a', '\xe3': 'a', '\xe4': 'a', '\xe5': 'a',
+  '\xc7': 'C',  '\xe7': 'c',
+  '\xd0': 'D',  '\xf0': 'd',
+  '\xc8': 'E',  '\xc9': 'E', '\xca': 'E', '\xcb': 'E',
+  '\xe8': 'e',  '\xe9': 'e', '\xea': 'e', '\xeb': 'e',
+  '\xcc': 'I',  '\xcd': 'I', '\xce': 'I', '\xcf': 'I',
+  '\xec': 'i',  '\xed': 'i', '\xee': 'i', '\xef': 'i',
+  '\xd1': 'N',  '\xf1': 'n',
+  '\xd2': 'O',  '\xd3': 'O', '\xd4': 'O', '\xd5': 'O', '\xd6': 'O', '\xd8': 'O',
+  '\xf2': 'o',  '\xf3': 'o', '\xf4': 'o', '\xf5': 'o', '\xf6': 'o', '\xf8': 'o',
+  '\xd9': 'U',  '\xda': 'U', '\xdb': 'U', '\xdc': 'U',
+  '\xf9': 'u',  '\xfa': 'u', '\xfb': 'u', '\xfc': 'u',
+  '\xdd': 'Y',  '\xfd': 'y', '\xff': 'y',
+  '\xc6': 'Ae', '\xe6': 'ae',
+  '\xde': 'Th', '\xfe': 'th',
+  '\xdf': 'ss',
+  // Latin Extended-A block.
+  '\u0100': 'A',  '\u0102': 'A', '\u0104': 'A',
+  '\u0101': 'a',  '\u0103': 'a', '\u0105': 'a',
+  '\u0106': 'C',  '\u0108': 'C', '\u010a': 'C', '\u010c': 'C',
+  '\u0107': 'c',  '\u0109': 'c', '\u010b': 'c', '\u010d': 'c',
+  '\u010e': 'D',  '\u0110': 'D', '\u010f': 'd', '\u0111': 'd',
+  '\u0112': 'E',  '\u0114': 'E', '\u0116': 'E', '\u0118': 'E', '\u011a': 'E',
+  '\u0113': 'e',  '\u0115': 'e', '\u0117': 'e', '\u0119': 'e', '\u011b': 'e',
+  '\u011c': 'G',  '\u011e': 'G', '\u0120': 'G', '\u0122': 'G',
+  '\u011d': 'g',  '\u011f': 'g', '\u0121': 'g', '\u0123': 'g',
+  '\u0124': 'H',  '\u0126': 'H', '\u0125': 'h', '\u0127': 'h',
+  '\u0128': 'I',  '\u012a': 'I', '\u012c': 'I', '\u012e': 'I', '\u0130': 'I',
+  '\u0129': 'i',  '\u012b': 'i', '\u012d': 'i', '\u012f': 'i', '\u0131': 'i',
+  '\u0134': 'J',  '\u0135': 'j',
+  '\u0136': 'K',  '\u0137': 'k', '\u0138': 'k',
+  '\u0139': 'L',  '\u013b': 'L', '\u013d': 'L', '\u013f': 'L', '\u0141': 'L',
+  '\u013a': 'l',  '\u013c': 'l', '\u013e': 'l', '\u0140': 'l', '\u0142': 'l',
+  '\u0143': 'N',  '\u0145': 'N', '\u0147': 'N', '\u014a': 'N',
+  '\u0144': 'n',  '\u0146': 'n', '\u0148': 'n', '\u014b': 'n',
+  '\u014c': 'O',  '\u014e': 'O', '\u0150': 'O',
+  '\u014d': 'o',  '\u014f': 'o', '\u0151': 'o',
+  '\u0154': 'R',  '\u0156': 'R', '\u0158': 'R',
+  '\u0155': 'r',  '\u0157': 'r', '\u0159': 'r',
+  '\u015a': 'S',  '\u015c': 'S', '\u015e': 'S', '\u0160': 'S',
+  '\u015b': 's',  '\u015d': 's', '\u015f': 's', '\u0161': 's',
+  '\u0162': 'T',  '\u0164': 'T', '\u0166': 'T',
+  '\u0163': 't',  '\u0165': 't', '\u0167': 't',
+  '\u0168': 'U',  '\u016a': 'U', '\u016c': 'U', '\u016e': 'U', '\u0170': 'U', '\u0172': 'U',
+  '\u0169': 'u',  '\u016b': 'u', '\u016d': 'u', '\u016f': 'u', '\u0171': 'u', '\u0173': 'u',
+  '\u0174': 'W',  '\u0175': 'w',
+  '\u0176': 'Y',  '\u0177': 'y', '\u0178': 'Y',
+  '\u0179': 'Z',  '\u017b': 'Z', '\u017d': 'Z',
+  '\u017a': 'z',  '\u017c': 'z', '\u017e': 'z',
+  '\u0132': 'IJ', '\u0133': 'ij',
+  '\u0152': 'Oe', '\u0153': 'oe',
+  '\u0149': "'n", '\u017f': 'ss'
+};
+
+/** Detect free variable `global` from Node.js. */
+var freeGlobal = typeof global == 'object' && global && global.Object === Object && global;
+
+/** Detect free variable `self`. */
+var freeSelf = typeof self == 'object' && self && self.Object === Object && self;
+
+/** Used as a reference to the global object. */
+var root = freeGlobal || freeSelf || Function('return this')();
+
+/**
+ * A specialized version of `_.reduce` for arrays without support for
+ * iteratee shorthands.
+ *
+ * @private
+ * @param {Array} [array] The array to iterate over.
+ * @param {Function} iteratee The function invoked per iteration.
+ * @param {*} [accumulator] The initial value.
+ * @param {boolean} [initAccum] Specify using the first element of `array` as
+ *  the initial value.
+ * @returns {*} Returns the accumulated value.
+ */
+function arrayReduce(array, iteratee, accumulator, initAccum) {
+  var index = -1,
+      length = array ? array.length : 0;
+
+  if (initAccum && length) {
+    accumulator = array[++index];
+  }
+  while (++index < length) {
+    accumulator = iteratee(accumulator, array[index], index, array);
+  }
+  return accumulator;
+}
+
+/**
+ * Converts an ASCII `string` to an array.
+ *
+ * @private
+ * @param {string} string The string to convert.
+ * @returns {Array} Returns the converted array.
+ */
+function asciiToArray(string) {
+  return string.split('');
+}
+
+/**
+ * Splits an ASCII `string` into an array of its words.
+ *
+ * @private
+ * @param {string} The string to inspect.
+ * @returns {Array} Returns the words of `string`.
+ */
+function asciiWords(string) {
+  return string.match(reAsciiWord) || [];
+}
+
+/**
+ * The base implementation of `_.propertyOf` without support for deep paths.
+ *
+ * @private
+ * @param {Object} object The object to query.
+ * @returns {Function} Returns the new accessor function.
+ */
+function basePropertyOf(object) {
+  return function(key) {
+    return object == null ? undefined : object[key];
+  };
+}
+
+/**
+ * Used by `_.deburr` to convert Latin-1 Supplement and Latin Extended-A
+ * letters to basic Latin letters.
+ *
+ * @private
+ * @param {string} letter The matched letter to deburr.
+ * @returns {string} Returns the deburred letter.
+ */
+var deburrLetter = basePropertyOf(deburredLetters);
+
+/**
+ * Checks if `string` contains Unicode symbols.
+ *
+ * @private
+ * @param {string} string The string to inspect.
+ * @returns {boolean} Returns `true` if a symbol is found, else `false`.
+ */
+function hasUnicode(string) {
+  return reHasUnicode.test(string);
+}
+
+/**
+ * Checks if `string` contains a word composed of Unicode symbols.
+ *
+ * @private
+ * @param {string} string The string to inspect.
+ * @returns {boolean} Returns `true` if a word is found, else `false`.
+ */
+function hasUnicodeWord(string) {
+  return reHasUnicodeWord.test(string);
+}
+
+/**
+ * Converts `string` to an array.
+ *
+ * @private
+ * @param {string} string The string to convert.
+ * @returns {Array} Returns the converted array.
+ */
+function stringToArray(string) {
+  return hasUnicode(string)
+    ? unicodeToArray(string)
+    : asciiToArray(string);
+}
+
+/**
+ * Converts a Unicode `string` to an array.
+ *
+ * @private
+ * @param {string} string The string to convert.
+ * @returns {Array} Returns the converted array.
+ */
+function unicodeToArray(string) {
+  return string.match(reUnicode) || [];
+}
+
+/**
+ * Splits a Unicode `string` into an array of its words.
+ *
+ * @private
+ * @param {string} The string to inspect.
+ * @returns {Array} Returns the words of `string`.
+ */
+function unicodeWords(string) {
+  return string.match(reUnicodeWord) || [];
+}
+
+/** Used for built-in method references. */
+var objectProto = Object.prototype;
+
+/**
+ * Used to resolve the
+ * [`toStringTag`](http://ecma-international.org/ecma-262/7.0/#sec-object.prototype.tostring)
+ * of values.
+ */
+var objectToString = objectProto.toString;
+
+/** Built-in value references. */
+var Symbol = root.Symbol;
+
+/** Used to convert symbols to primitives and strings. */
+var symbolProto = Symbol ? Symbol.prototype : undefined,
+    symbolToString = symbolProto ? symbolProto.toString : undefined;
+
+/**
+ * The base implementation of `_.slice` without an iteratee call guard.
+ *
+ * @private
+ * @param {Array} array The array to slice.
+ * @param {number} [start=0] The start position.
+ * @param {number} [end=array.length] The end position.
+ * @returns {Array} Returns the slice of `array`.
+ */
+function baseSlice(array, start, end) {
+  var index = -1,
+      length = array.length;
+
+  if (start < 0) {
+    start = -start > length ? 0 : (length + start);
+  }
+  end = end > length ? length : end;
+  if (end < 0) {
+    end += length;
+  }
+  length = start > end ? 0 : ((end - start) >>> 0);
+  start >>>= 0;
+
+  var result = Array(length);
+  while (++index < length) {
+    result[index] = array[index + start];
+  }
+  return result;
+}
+
+/**
+ * The base implementation of `_.toString` which doesn't convert nullish
+ * values to empty strings.
+ *
+ * @private
+ * @param {*} value The value to process.
+ * @returns {string} Returns the string.
+ */
+function baseToString(value) {
+  // Exit early for strings to avoid a performance hit in some environments.
+  if (typeof value == 'string') {
+    return value;
+  }
+  if (isSymbol(value)) {
+    return symbolToString ? symbolToString.call(value) : '';
+  }
+  var result = (value + '');
+  return (result == '0' && (1 / value) == -INFINITY) ? '-0' : result;
+}
+
+/**
+ * Casts `array` to a slice if it's needed.
+ *
+ * @private
+ * @param {Array} array The array to inspect.
+ * @param {number} start The start position.
+ * @param {number} [end=array.length] The end position.
+ * @returns {Array} Returns the cast slice.
+ */
+function castSlice(array, start, end) {
+  var length = array.length;
+  end = end === undefined ? length : end;
+  return (!start && end >= length) ? array : baseSlice(array, start, end);
+}
+
+/**
+ * Creates a function like `_.lowerFirst`.
+ *
+ * @private
+ * @param {string} methodName The name of the `String` case method to use.
+ * @returns {Function} Returns the new case function.
+ */
+function createCaseFirst(methodName) {
+  return function(string) {
+    string = toString(string);
+
+    var strSymbols = hasUnicode(string)
+      ? stringToArray(string)
+      : undefined;
+
+    var chr = strSymbols
+      ? strSymbols[0]
+      : string.charAt(0);
+
+    var trailing = strSymbols
+      ? castSlice(strSymbols, 1).join('')
+      : string.slice(1);
+
+    return chr[methodName]() + trailing;
+  };
+}
+
+/**
+ * Creates a function like `_.camelCase`.
+ *
+ * @private
+ * @param {Function} callback The function to combine each word.
+ * @returns {Function} Returns the new compounder function.
+ */
+function createCompounder(callback) {
+  return function(string) {
+    return arrayReduce(words(deburr(string).replace(reApos, '')), callback, '');
+  };
+}
+
+/**
+ * Checks if `value` is object-like. A value is object-like if it's not `null`
+ * and has a `typeof` result of "object".
+ *
+ * @static
+ * @memberOf _
+ * @since 4.0.0
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is object-like, else `false`.
+ * @example
+ *
+ * _.isObjectLike({});
+ * // => true
+ *
+ * _.isObjectLike([1, 2, 3]);
+ * // => true
+ *
+ * _.isObjectLike(_.noop);
+ * // => false
+ *
+ * _.isObjectLike(null);
+ * // => false
+ */
+function isObjectLike(value) {
+  return !!value && typeof value == 'object';
+}
+
+/**
+ * Checks if `value` is classified as a `Symbol` primitive or object.
+ *
+ * @static
+ * @memberOf _
+ * @since 4.0.0
+ * @category Lang
+ * @param {*} value The value to check.
+ * @returns {boolean} Returns `true` if `value` is a symbol, else `false`.
+ * @example
+ *
+ * _.isSymbol(Symbol.iterator);
+ * // => true
+ *
+ * _.isSymbol('abc');
+ * // => false
+ */
+function isSymbol(value) {
+  return typeof value == 'symbol' ||
+    (isObjectLike(value) && objectToString.call(value) == symbolTag);
+}
+
+/**
+ * Converts `value` to a string. An empty string is returned for `null`
+ * and `undefined` values. The sign of `-0` is preserved.
+ *
+ * @static
+ * @memberOf _
+ * @since 4.0.0
+ * @category Lang
+ * @param {*} value The value to process.
+ * @returns {string} Returns the string.
+ * @example
+ *
+ * _.toString(null);
+ * // => ''
+ *
+ * _.toString(-0);
+ * // => '-0'
+ *
+ * _.toString([1, 2, 3]);
+ * // => '1,2,3'
+ */
+function toString(value) {
+  return value == null ? '' : baseToString(value);
+}
+
+/**
+ * Converts `string` to [camel case](https://en.wikipedia.org/wiki/CamelCase).
+ *
+ * @static
+ * @memberOf _
+ * @since 3.0.0
+ * @category String
+ * @param {string} [string=''] The string to convert.
+ * @returns {string} Returns the camel cased string.
+ * @example
+ *
+ * _.camelCase('Foo Bar');
+ * // => 'fooBar'
+ *
+ * _.camelCase('--foo-bar--');
+ * // => 'fooBar'
+ *
+ * _.camelCase('__FOO_BAR__');
+ * // => 'fooBar'
+ */
+var camelCase = createCompounder(function(result, word, index) {
+  word = word.toLowerCase();
+  return result + (index ? capitalize(word) : word);
+});
+
+/**
+ * Converts the first character of `string` to upper case and the remaining
+ * to lower case.
+ *
+ * @static
+ * @memberOf _
+ * @since 3.0.0
+ * @category String
+ * @param {string} [string=''] The string to capitalize.
+ * @returns {string} Returns the capitalized string.
+ * @example
+ *
+ * _.capitalize('FRED');
+ * // => 'Fred'
+ */
+function capitalize(string) {
+  return upperFirst(toString(string).toLowerCase());
+}
+
+/**
+ * Deburrs `string` by converting
+ * [Latin-1 Supplement](https://en.wikipedia.org/wiki/Latin-1_Supplement_(Unicode_block)#Character_table)
+ * and [Latin Extended-A](https://en.wikipedia.org/wiki/Latin_Extended-A)
+ * letters to basic Latin letters and removing
+ * [combining diacritical marks](https://en.wikipedia.org/wiki/Combining_Diacritical_Marks).
+ *
+ * @static
+ * @memberOf _
+ * @since 3.0.0
+ * @category String
+ * @param {string} [string=''] The string to deburr.
+ * @returns {string} Returns the deburred string.
+ * @example
+ *
+ * _.deburr('déjà vu');
+ * // => 'deja vu'
+ */
+function deburr(string) {
+  string = toString(string);
+  return string && string.replace(reLatin, deburrLetter).replace(reComboMark, '');
+}
+
+/**
+ * Converts the first character of `string` to upper case.
+ *
+ * @static
+ * @memberOf _
+ * @since 4.0.0
+ * @category String
+ * @param {string} [string=''] The string to convert.
+ * @returns {string} Returns the converted string.
+ * @example
+ *
+ * _.upperFirst('fred');
+ * // => 'Fred'
+ *
+ * _.upperFirst('FRED');
+ * // => 'FRED'
+ */
+var upperFirst = createCaseFirst('toUpperCase');
+
+/**
+ * Splits `string` into an array of its words.
+ *
+ * @static
+ * @memberOf _
+ * @since 3.0.0
+ * @category String
+ * @param {string} [string=''] The string to inspect.
+ * @param {RegExp|string} [pattern] The pattern to match words.
+ * @param- {Object} [guard] Enables use as an iteratee for methods like `_.map`.
+ * @returns {Array} Returns the words of `string`.
+ * @example
+ *
+ * _.words('fred, barney, & pebbles');
+ * // => ['fred', 'barney', 'pebbles']
+ *
+ * _.words('fred, barney, & pebbles', /[^, ]+/g);
+ * // => ['fred', 'barney', '&', 'pebbles']
+ */
+function words(string, pattern, guard) {
+  string = toString(string);
+  pattern = guard ? undefined : pattern;
+
+  if (pattern === undefined) {
+    return hasUnicodeWord(string) ? unicodeWords(string) : asciiWords(string);
+  }
+  return string.match(pattern) || [];
+}
+
+module.exports = camelCase;
diff --git a/igv_component/node_modules/lodash.camelcase/package.json b/igv_component/node_modules/lodash.camelcase/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..aca63e0bbd09e0a5e22fa40bcaf7dbf3c7f67c64
--- /dev/null
+++ b/igv_component/node_modules/lodash.camelcase/package.json
@@ -0,0 +1,17 @@
+{
+  "name": "lodash.camelcase",
+  "version": "4.3.0",
+  "description": "The lodash method `_.camelCase` exported as a module.",
+  "homepage": "https://lodash.com/",
+  "icon": "https://lodash.com/icon.svg",
+  "license": "MIT",
+  "keywords": "lodash-modularized, camelcase",
+  "author": "John-David Dalton <john.david.dalton@gmail.com> (http://allyoucanleet.com/)",
+  "contributors": [
+    "John-David Dalton <john.david.dalton@gmail.com> (http://allyoucanleet.com/)",
+    "Blaine Bublitz <blaine.bublitz@gmail.com> (https://github.com/phated)",
+    "Mathias Bynens <mathias@qiwi.be> (https://mathiasbynens.be/)"
+  ],
+  "repository": "lodash/lodash",
+  "scripts": { "test": "echo \"See https://travis-ci.org/lodash/lodash-cli for testing details.\"" }
+}
diff --git a/igv_component/node_modules/loose-envify/LICENSE b/igv_component/node_modules/loose-envify/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..fbafb48758c78039fedb1dbce1ffa6de019870d1
--- /dev/null
+++ b/igv_component/node_modules/loose-envify/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 Andres Suarez <zertosh@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/igv_component/node_modules/loose-envify/README.md b/igv_component/node_modules/loose-envify/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..7f4e07b00d20b0be5525966e660e4a3cb92cd96e
--- /dev/null
+++ b/igv_component/node_modules/loose-envify/README.md
@@ -0,0 +1,45 @@
+# loose-envify
+
+[![Build Status](https://travis-ci.org/zertosh/loose-envify.svg?branch=master)](https://travis-ci.org/zertosh/loose-envify)
+
+Fast (and loose) selective `process.env` replacer using [js-tokens](https://github.com/lydell/js-tokens) instead of an AST. Works just like [envify](https://github.com/hughsk/envify) but much faster.
+
+## Gotchas
+
+* Doesn't handle broken syntax.
+* Doesn't look inside embedded expressions in template strings.
+  - **this won't work:**
+  ```js
+  console.log(`the current env is ${process.env.NODE_ENV}`);
+  ```
+* Doesn't replace oddly-spaced or oddly-commented expressions.
+  - **this won't work:**
+  ```js
+  console.log(process./*won't*/env./*work*/NODE_ENV);
+  ```
+
+## Usage/Options
+
+loose-envify has the exact same interface as [envify](https://github.com/hughsk/envify), including the CLI.
+
+## Benchmark
+
+```
+envify:
+
+  $ for i in {1..5}; do node bench/bench.js 'envify'; done
+  708ms
+  727ms
+  791ms
+  719ms
+  720ms
+
+loose-envify:
+
+  $ for i in {1..5}; do node bench/bench.js '../'; done
+  51ms
+  52ms
+  52ms
+  52ms
+  52ms
+```
diff --git a/igv_component/node_modules/loose-envify/cli.js b/igv_component/node_modules/loose-envify/cli.js
new file mode 100644
index 0000000000000000000000000000000000000000..c0b63cb1dfdd2a8830b5dde6afca09e3c2560fda
--- /dev/null
+++ b/igv_component/node_modules/loose-envify/cli.js
@@ -0,0 +1,16 @@
+#!/usr/bin/env node
+'use strict';
+
+var looseEnvify = require('./');
+var fs = require('fs');
+
+if (process.argv[2]) {
+  fs.createReadStream(process.argv[2], {encoding: 'utf8'})
+    .pipe(looseEnvify(process.argv[2]))
+    .pipe(process.stdout);
+} else {
+  process.stdin.resume()
+  process.stdin
+    .pipe(looseEnvify(__filename))
+    .pipe(process.stdout);
+}
diff --git a/igv_component/node_modules/loose-envify/custom.js b/igv_component/node_modules/loose-envify/custom.js
new file mode 100644
index 0000000000000000000000000000000000000000..6389bfac505e23015ccbd6fb6cd07be8e73215cb
--- /dev/null
+++ b/igv_component/node_modules/loose-envify/custom.js
@@ -0,0 +1,4 @@
+// envify compatibility
+'use strict';
+
+module.exports = require('./loose-envify');
diff --git a/igv_component/node_modules/loose-envify/index.js b/igv_component/node_modules/loose-envify/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..8cd8305ddc1a012b319732a3321e647561060855
--- /dev/null
+++ b/igv_component/node_modules/loose-envify/index.js
@@ -0,0 +1,3 @@
+'use strict';
+
+module.exports = require('./loose-envify')(process.env);
diff --git a/igv_component/node_modules/loose-envify/loose-envify.js b/igv_component/node_modules/loose-envify/loose-envify.js
new file mode 100644
index 0000000000000000000000000000000000000000..b5a5be22078cf5fc00146742a34861c43d5902da
--- /dev/null
+++ b/igv_component/node_modules/loose-envify/loose-envify.js
@@ -0,0 +1,36 @@
+'use strict';
+
+var stream = require('stream');
+var util = require('util');
+var replace = require('./replace');
+
+var jsonExtRe = /\.json$/;
+
+module.exports = function(rootEnv) {
+  rootEnv = rootEnv || process.env;
+  return function (file, trOpts) {
+    if (jsonExtRe.test(file)) {
+      return stream.PassThrough();
+    }
+    var envs = trOpts ? [rootEnv, trOpts] : [rootEnv];
+    return new LooseEnvify(envs);
+  };
+};
+
+function LooseEnvify(envs) {
+  stream.Transform.call(this);
+  this._data = '';
+  this._envs = envs;
+}
+util.inherits(LooseEnvify, stream.Transform);
+
+LooseEnvify.prototype._transform = function(buf, enc, cb) {
+  this._data += buf;
+  cb();
+};
+
+LooseEnvify.prototype._flush = function(cb) {
+  var replaced = replace(this._data, this._envs);
+  this.push(replaced);
+  cb();
+};
diff --git a/igv_component/node_modules/loose-envify/package.json b/igv_component/node_modules/loose-envify/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..5e3d0e2777f624f77263be28d31a8fa7d50c8157
--- /dev/null
+++ b/igv_component/node_modules/loose-envify/package.json
@@ -0,0 +1,36 @@
+{
+  "name": "loose-envify",
+  "version": "1.4.0",
+  "description": "Fast (and loose) selective `process.env` replacer using js-tokens instead of an AST",
+  "keywords": [
+    "environment",
+    "variables",
+    "browserify",
+    "browserify-transform",
+    "transform",
+    "source",
+    "configuration"
+  ],
+  "homepage": "https://github.com/zertosh/loose-envify",
+  "license": "MIT",
+  "author": "Andres Suarez <zertosh@gmail.com>",
+  "main": "index.js",
+  "bin": {
+    "loose-envify": "cli.js"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/zertosh/loose-envify.git"
+  },
+  "scripts": {
+    "test": "tap test/*.js"
+  },
+  "dependencies": {
+    "js-tokens": "^3.0.0 || ^4.0.0"
+  },
+  "devDependencies": {
+    "browserify": "^13.1.1",
+    "envify": "^3.4.0",
+    "tap": "^8.0.0"
+  }
+}
diff --git a/igv_component/node_modules/loose-envify/replace.js b/igv_component/node_modules/loose-envify/replace.js
new file mode 100644
index 0000000000000000000000000000000000000000..ec15e81c298e9753accffac697a51eca424fec07
--- /dev/null
+++ b/igv_component/node_modules/loose-envify/replace.js
@@ -0,0 +1,65 @@
+'use strict';
+
+var jsTokens = require('js-tokens').default;
+
+var processEnvRe = /\bprocess\.env\.[_$a-zA-Z][$\w]+\b/;
+var spaceOrCommentRe = /^(?:\s|\/[/*])/;
+
+function replace(src, envs) {
+  if (!processEnvRe.test(src)) {
+    return src;
+  }
+
+  var out = [];
+  var purge = envs.some(function(env) {
+    return env._ && env._.indexOf('purge') !== -1;
+  });
+
+  jsTokens.lastIndex = 0
+  var parts = src.match(jsTokens);
+
+  for (var i = 0; i < parts.length; i++) {
+    if (parts[i    ] === 'process' &&
+        parts[i + 1] === '.' &&
+        parts[i + 2] === 'env' &&
+        parts[i + 3] === '.') {
+      var prevCodeToken = getAdjacentCodeToken(-1, parts, i);
+      var nextCodeToken = getAdjacentCodeToken(1, parts, i + 4);
+      var replacement = getReplacementString(envs, parts[i + 4], purge);
+      if (prevCodeToken !== '.' &&
+          nextCodeToken !== '.' &&
+          nextCodeToken !== '=' &&
+          typeof replacement === 'string') {
+        out.push(replacement);
+        i += 4;
+        continue;
+      }
+    }
+    out.push(parts[i]);
+  }
+
+  return out.join('');
+}
+
+function getAdjacentCodeToken(dir, parts, i) {
+  while (true) {
+    var part = parts[i += dir];
+    if (!spaceOrCommentRe.test(part)) {
+      return part;
+    }
+  }
+}
+
+function getReplacementString(envs, name, purge) {
+  for (var j = 0; j < envs.length; j++) {
+    var env = envs[j];
+    if (typeof env[name] !== 'undefined') {
+      return JSON.stringify(env[name]);
+    }
+  }
+  if (purge) {
+    return 'undefined';
+  }
+}
+
+module.exports = replace;
diff --git a/igv_component/node_modules/object-assign/index.js b/igv_component/node_modules/object-assign/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..0930cf8890b9af66125c222c29d7bd75614ac6b4
--- /dev/null
+++ b/igv_component/node_modules/object-assign/index.js
@@ -0,0 +1,90 @@
+/*
+object-assign
+(c) Sindre Sorhus
+@license MIT
+*/
+
+'use strict';
+/* eslint-disable no-unused-vars */
+var getOwnPropertySymbols = Object.getOwnPropertySymbols;
+var hasOwnProperty = Object.prototype.hasOwnProperty;
+var propIsEnumerable = Object.prototype.propertyIsEnumerable;
+
+function toObject(val) {
+	if (val === null || val === undefined) {
+		throw new TypeError('Object.assign cannot be called with null or undefined');
+	}
+
+	return Object(val);
+}
+
+function shouldUseNative() {
+	try {
+		if (!Object.assign) {
+			return false;
+		}
+
+		// Detect buggy property enumeration order in older V8 versions.
+
+		// https://bugs.chromium.org/p/v8/issues/detail?id=4118
+		var test1 = new String('abc');  // eslint-disable-line no-new-wrappers
+		test1[5] = 'de';
+		if (Object.getOwnPropertyNames(test1)[0] === '5') {
+			return false;
+		}
+
+		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
+		var test2 = {};
+		for (var i = 0; i < 10; i++) {
+			test2['_' + String.fromCharCode(i)] = i;
+		}
+		var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
+			return test2[n];
+		});
+		if (order2.join('') !== '0123456789') {
+			return false;
+		}
+
+		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
+		var test3 = {};
+		'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
+			test3[letter] = letter;
+		});
+		if (Object.keys(Object.assign({}, test3)).join('') !==
+				'abcdefghijklmnopqrst') {
+			return false;
+		}
+
+		return true;
+	} catch (err) {
+		// We don't expect any of the above to throw, but better to be safe.
+		return false;
+	}
+}
+
+module.exports = shouldUseNative() ? Object.assign : function (target, source) {
+	var from;
+	var to = toObject(target);
+	var symbols;
+
+	for (var s = 1; s < arguments.length; s++) {
+		from = Object(arguments[s]);
+
+		for (var key in from) {
+			if (hasOwnProperty.call(from, key)) {
+				to[key] = from[key];
+			}
+		}
+
+		if (getOwnPropertySymbols) {
+			symbols = getOwnPropertySymbols(from);
+			for (var i = 0; i < symbols.length; i++) {
+				if (propIsEnumerable.call(from, symbols[i])) {
+					to[symbols[i]] = from[symbols[i]];
+				}
+			}
+		}
+	}
+
+	return to;
+};
diff --git a/igv_component/node_modules/object-assign/license b/igv_component/node_modules/object-assign/license
new file mode 100644
index 0000000000000000000000000000000000000000..654d0bfe943437d43242325b1fbcff5f400d84ee
--- /dev/null
+++ b/igv_component/node_modules/object-assign/license
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/igv_component/node_modules/object-assign/package.json b/igv_component/node_modules/object-assign/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..503eb1e6d0f5a1404c8e7f6c09fbda7e40fd29b4
--- /dev/null
+++ b/igv_component/node_modules/object-assign/package.json
@@ -0,0 +1,42 @@
+{
+  "name": "object-assign",
+  "version": "4.1.1",
+  "description": "ES2015 `Object.assign()` ponyfill",
+  "license": "MIT",
+  "repository": "sindresorhus/object-assign",
+  "author": {
+    "name": "Sindre Sorhus",
+    "email": "sindresorhus@gmail.com",
+    "url": "sindresorhus.com"
+  },
+  "engines": {
+    "node": ">=0.10.0"
+  },
+  "scripts": {
+    "test": "xo && ava",
+    "bench": "matcha bench.js"
+  },
+  "files": [
+    "index.js"
+  ],
+  "keywords": [
+    "object",
+    "assign",
+    "extend",
+    "properties",
+    "es2015",
+    "ecmascript",
+    "harmony",
+    "ponyfill",
+    "prollyfill",
+    "polyfill",
+    "shim",
+    "browser"
+  ],
+  "devDependencies": {
+    "ava": "^0.16.0",
+    "lodash": "^4.16.4",
+    "matcha": "^0.7.0",
+    "xo": "^0.16.0"
+  }
+}
diff --git a/igv_component/node_modules/object-assign/readme.md b/igv_component/node_modules/object-assign/readme.md
new file mode 100644
index 0000000000000000000000000000000000000000..1be09d35c776cc0e9cc59519c2de6b9eecf8aa68
--- /dev/null
+++ b/igv_component/node_modules/object-assign/readme.md
@@ -0,0 +1,61 @@
+# object-assign [![Build Status](https://travis-ci.org/sindresorhus/object-assign.svg?branch=master)](https://travis-ci.org/sindresorhus/object-assign)
+
+> ES2015 [`Object.assign()`](http://www.2ality.com/2014/01/object-assign.html) [ponyfill](https://ponyfill.com)
+
+
+## Use the built-in
+
+Node.js 4 and up, as well as every evergreen browser (Chrome, Edge, Firefox, Opera, Safari),
+support `Object.assign()` :tada:. If you target only those environments, then by all
+means, use `Object.assign()` instead of this package.
+
+
+## Install
+
+```
+$ npm install --save object-assign
+```
+
+
+## Usage
+
+```js
+const objectAssign = require('object-assign');
+
+objectAssign({foo: 0}, {bar: 1});
+//=> {foo: 0, bar: 1}
+
+// multiple sources
+objectAssign({foo: 0}, {bar: 1}, {baz: 2});
+//=> {foo: 0, bar: 1, baz: 2}
+
+// overwrites equal keys
+objectAssign({foo: 0}, {foo: 1}, {foo: 2});
+//=> {foo: 2}
+
+// ignores null and undefined sources
+objectAssign({foo: 0}, null, {bar: 1}, undefined);
+//=> {foo: 0, bar: 1}
+```
+
+
+## API
+
+### objectAssign(target, [source, ...])
+
+Assigns enumerable own properties of `source` objects to the `target` object and returns the `target` object. Additional `source` objects will overwrite previous ones.
+
+
+## Resources
+
+- [ES2015 spec - Object.assign](https://people.mozilla.org/~jorendorff/es6-draft.html#sec-object.assign)
+
+
+## Related
+
+- [deep-assign](https://github.com/sindresorhus/deep-assign) - Recursive `Object.assign()`
+
+
+## License
+
+MIT © [Sindre Sorhus](https://sindresorhus.com)
diff --git a/igv_component/node_modules/pad-left/LICENSE b/igv_component/node_modules/pad-left/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..39245ac1c6061324d8a844c8bddb426208d06d9f
--- /dev/null
+++ b/igv_component/node_modules/pad-left/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014-2016, Jon Schlinkert.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/igv_component/node_modules/pad-left/README.md b/igv_component/node_modules/pad-left/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..eae0f48eba962acb810b8fd209d39a5d62349927
--- /dev/null
+++ b/igv_component/node_modules/pad-left/README.md
@@ -0,0 +1,134 @@
+# pad-left [![NPM version](https://img.shields.io/npm/v/pad-left.svg?style=flat)](https://www.npmjs.com/package/pad-left) [![NPM downloads](https://img.shields.io/npm/dm/pad-left.svg?style=flat)](https://npmjs.org/package/pad-left) [![Build Status](https://img.shields.io/travis/jonschlinkert/pad-left.svg?style=flat)](https://travis-ci.org/jonschlinkert/pad-left)
+
+Left pad a string with zeros or a specified string. Fastest implementation.
+
+You might also be interested in [word-wrap](https://github.com/jonschlinkert/word-wrap).
+
+## Install
+
+Install with [npm](https://www.npmjs.com/):
+
+```sh
+$ npm install pad-left --save
+```
+
+## Usage
+
+```js
+var pad = require('pad-left');
+pad(  '4', 4, '0') // 0004
+pad( '35', 4, '0') // 0035
+pad('459', 4, '0') // 0459
+```
+
+## Benchmarks
+
+Benchmarks for node.js v6.1.0 versus [left-pad](https://github.com/stevemao/left-pad).
+
+```sh
+# benchmark/fixtures/10-custom-char.js (37 bytes)
+  pad-left x 14,940,947 ops/sec ±0.81% (87 runs sampled)
+  left-pad x 7,901,604 ops/sec ±1.17% (86 runs sampled)
+
+# benchmark/fixtures/10.js (32 bytes)
+  pad-left x 13,305,123 ops/sec ±1.53% (84 runs sampled)
+  left-pad x 6,979,536 ops/sec ±1.13% (84 runs sampled)
+
+# benchmark/fixtures/100-custom-char.js (38 bytes)
+  pad-left x 14,227,637 ops/sec ±1.41% (81 runs sampled)
+  left-pad x 1,352,240 ops/sec ±1.51% (86 runs sampled)
+
+# benchmark/fixtures/100.js (34 bytes)
+  pad-left x 15,664,561 ops/sec ±0.99% (83 runs sampled)
+  left-pad x 1,247,316 ops/sec ±0.96% (87 runs sampled)
+
+# benchmark/fixtures/1000-custom-char.js (40 bytes)
+  pad-left x 15,210,294 ops/sec ±1.15% (87 runs sampled)
+  left-pad x 159,958 ops/sec ±1.01% (88 runs sampled)
+
+# benchmark/fixtures/1000.js (35 bytes)
+  pad-left x 14,157,425 ops/sec ±1.10% (88 runs sampled)
+  left-pad x 143,805 ops/sec ±1.08% (87 runs sampled)
+```
+
+Benchmarks for node.js v6.1.0 versus [stevemao/left-pad](https://github.com/stevemao/left-pad).
+
+```sh
+# benchmark/fixtures/10-custom-char.js (37 bytes)
+  pad-left x 13,251,037 ops/sec ±1.40% (84 runs sampled)
+  left-pad x 10,745,530 ops/sec ±1.18% (86 runs sampled)
+
+# benchmark/fixtures/10.js (32 bytes)
+  pad-left x 13,644,357 ops/sec ±1.33% (87 runs sampled)
+  left-pad x 20,107,245 ops/sec ±1.00% (88 runs sampled)
+
+# benchmark/fixtures/100-custom-char.js (38 bytes)
+  pad-left x 15,650,330 ops/sec ±1.01% (86 runs sampled)
+  left-pad x 9,706,877 ops/sec ±1.13% (87 runs sampled)
+
+# benchmark/fixtures/1000-custom-char.js (40 bytes)
+  pad-left x 17,255,593 ops/sec ±0.99% (88 runs sampled)
+  left-pad x 6,312,637 ops/sec ±1.16% (87 runs sampled)
+
+# benchmark/fixtures/1000.js (35 bytes)
+  pad-left x 15,679,410 ops/sec ±0.99% (90 runs sampled)
+  left-pad x 6,439,580 ops/sec ±1.08% (86 runs sampled)
+```
+
+## Related projects
+
+You might also be interested in these projects:
+
+* [align-text](https://www.npmjs.com/package/align-text): Align the text in a string. | [homepage](https://github.com/jonschlinkert/align-text)
+* [center-align](https://www.npmjs.com/package/center-align): Center-align the text in a string. | [homepage](https://github.com/jonschlinkert/center-align)
+* [justified](https://www.npmjs.com/package/justified): Wrap words to a specified length and justified the text. | [homepage](https://github.com/jonschlinkert/justified)
+* [pad-right](https://www.npmjs.com/package/pad-right): Right pad a string with zeros or a specified string. Fastest implementation. | [homepage](https://github.com/jonschlinkert/pad-right)
+* [repeat-string](https://www.npmjs.com/package/repeat-string): Repeat the given string n times. Fastest implementation for repeating a string. | [homepage](https://github.com/jonschlinkert/repeat-string)
+* [right-align-keys](https://www.npmjs.com/package/right-align-keys): Right align the keys of an object. | [homepage](https://github.com/jonschlinkert/right-align-keys)
+* [right-align-values](https://www.npmjs.com/package/right-align-values): Right align the values of a given property for each object in an array. Useful… [more](https://www.npmjs.com/package/right-align-values) | [homepage](https://github.com/jonschlinkert/right-align-values)
+* [right-align](https://www.npmjs.com/package/right-align): Right-align the text in a string. | [homepage](https://github.com/jonschlinkert/right-align)
+* [right-pad-keys](https://www.npmjs.com/package/right-pad-keys): Right pad the keys of an object. | [homepage](https://github.com/jonschlinkert/right-pad-keys)
+* [right-pad-values](https://www.npmjs.com/package/right-pad-values): Right pad the values of a given property for each object in an array. Useful… [more](https://www.npmjs.com/package/right-pad-values) | [homepage](https://github.com/jonschlinkert/right-pad-values)
+* [word-wrap](https://www.npmjs.com/package/word-wrap): Wrap words to a specified length. | [homepage](https://github.com/jonschlinkert/word-wrap)
+
+## Contributing
+
+Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](https://github.com/jonschlinkert/pad-left/issues/new).
+
+## Building docs
+
+Generate readme and API documentation with [verb](https://github.com/verbose/verb):
+
+```sh
+$ npm install verb && npm run docs
+```
+
+Or, if [verb](https://github.com/verbose/verb) is installed globally:
+
+```sh
+$ verb
+```
+
+## Running tests
+
+Install dev dependencies:
+
+```sh
+$ npm install -d && npm test
+```
+
+## Author
+
+**Jon Schlinkert**
+
+* [github/jonschlinkert](https://github.com/jonschlinkert)
+* [twitter/jonschlinkert](http://twitter.com/jonschlinkert)
+
+## License
+
+Copyright © 2016, [Jon Schlinkert](https://github.com/jonschlinkert).
+Released under the [MIT license](https://github.com/jonschlinkert/pad-left/blob/master/LICENSE).
+
+***
+
+_This file was generated by [verb](https://github.com/verbose/verb), v0.9.0, on May 07, 2016._
\ No newline at end of file
diff --git a/igv_component/node_modules/pad-left/index.js b/igv_component/node_modules/pad-left/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..ecec233cad1fdab3c9f82392b01793117bf10661
--- /dev/null
+++ b/igv_component/node_modules/pad-left/index.js
@@ -0,0 +1,28 @@
+/*!
+ * pad-left <https://github.com/jonschlinkert/pad-left>
+ *
+ * Copyright (c) 2014-2015, Jon Schlinkert.
+ * Licensed under the MIT license.
+ */
+
+'use strict';
+
+var repeat = require('repeat-string');
+
+module.exports = function padLeft(str, num, ch) {
+  str = str.toString();
+
+  if (typeof num === 'undefined') {
+    return str;
+  }
+
+  if (ch === 0) {
+    ch = '0';
+  } else if (ch) {
+    ch = ch.toString();
+  } else {
+    ch = ' ';
+  }
+
+  return repeat(ch, num - str.length) + str;
+};
diff --git a/igv_component/node_modules/pad-left/package.json b/igv_component/node_modules/pad-left/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..809958cc943ba32ae8255ebee1dc1f22f0c60fd0
--- /dev/null
+++ b/igv_component/node_modules/pad-left/package.json
@@ -0,0 +1,88 @@
+{
+  "name": "pad-left",
+  "description": "Left pad a string with zeros or a specified string. Fastest implementation.",
+  "version": "2.1.0",
+  "homepage": "https://github.com/jonschlinkert/pad-left",
+  "author": "Jon Schlinkert (https://github.com/jonschlinkert)",
+  "repository": "jonschlinkert/pad-left",
+  "bugs": {
+    "url": "https://github.com/jonschlinkert/pad-left/issues"
+  },
+  "license": "MIT",
+  "files": [
+    "index.js"
+  ],
+  "main": "index.js",
+  "engines": {
+    "node": ">=0.10.0"
+  },
+  "scripts": {
+    "test": "mocha"
+  },
+  "dependencies": {
+    "repeat-string": "^1.5.4"
+  },
+  "devDependencies": {
+    "benchmarked": "^0.2.5",
+    "gulp-format-md": "^0.1.9",
+    "left-pad": "github:stevemao/left-pad",
+    "minimist": "^1.2.0",
+    "mocha": "^2.4.5",
+    "should": "^8.3.1"
+  },
+  "keywords": [
+    "align",
+    "fill",
+    "left",
+    "pad",
+    "pad-left",
+    "padded",
+    "padding",
+    "spaces",
+    "string",
+    "zero",
+    "zero-fill",
+    "zeros"
+  ],
+  "verb": {
+    "run": true,
+    "toc": false,
+    "layout": "default",
+    "options": {
+      "helper": {
+        "copyright": {
+          "start": 2014
+        }
+      }
+    },
+    "tasks": [
+      "readme"
+    ],
+    "plugins": [
+      "gulp-format-md"
+    ],
+    "related": {
+      "highlight": "word-wrap",
+      "list": [
+        "align-text",
+        "center-align",
+        "justified",
+        "pad-right",
+        "repeat-string",
+        "right-align",
+        "right-align-keys",
+        "right-align-values",
+        "right-pad-keys",
+        "right-pad-values",
+        "word-wrap"
+      ]
+    },
+    "reflinks": [
+      "verb",
+      "left-pad"
+    ],
+    "lint": {
+      "reflinks": true
+    }
+  }
+}
diff --git a/igv_component/node_modules/prop-types/LICENSE b/igv_component/node_modules/prop-types/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..188fb2b0bd8e7b4aa032165449c180cc108d18ac
--- /dev/null
+++ b/igv_component/node_modules/prop-types/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) 2013-present, Facebook, Inc.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/igv_component/node_modules/prop-types/README.md b/igv_component/node_modules/prop-types/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..e54d435f9f80a7f91bde42e0de20849097d133b8
--- /dev/null
+++ b/igv_component/node_modules/prop-types/README.md
@@ -0,0 +1,302 @@
+# prop-types [![Build Status](https://travis-ci.com/facebook/prop-types.svg?branch=main)](https://travis-ci.org/facebook/prop-types)
+
+Runtime type checking for React props and similar objects.
+
+You can use prop-types to document the intended types of properties passed to
+components. React (and potentially other libraries—see the `checkPropTypes()`
+reference below) will check props passed to your components against those
+definitions, and warn in development if they don’t match.
+
+## Installation
+
+```shell
+npm install --save prop-types
+```
+
+## Importing
+
+```js
+import PropTypes from 'prop-types'; // ES6
+var PropTypes = require('prop-types'); // ES5 with npm
+```
+
+### CDN
+
+If you prefer to exclude `prop-types` from your application and use it
+globally via `window.PropTypes`, the `prop-types` package provides
+single-file distributions, which are hosted on the following CDNs:
+
+* [**unpkg**](https://unpkg.com/prop-types/)
+```html
+<!-- development version -->
+<script src="https://unpkg.com/prop-types@15.6/prop-types.js"></script>
+
+<!-- production version -->
+<script src="https://unpkg.com/prop-types@15.6/prop-types.min.js"></script>
+```
+
+* [**cdnjs**](https://cdnjs.com/libraries/prop-types)
+```html
+<!-- development version -->
+<script src="https://cdnjs.cloudflare.com/ajax/libs/prop-types/15.6.0/prop-types.js"></script>
+
+<!-- production version -->
+<script src="https://cdnjs.cloudflare.com/ajax/libs/prop-types/15.6.0/prop-types.min.js"></script>
+```
+
+To load a specific version of `prop-types` replace `15.6.0` with the version number.
+
+## Usage
+
+PropTypes was originally exposed as part of the React core module, and is
+commonly used with React components.
+Here is an example of using PropTypes with a React component, which also
+documents the different validators provided:
+
+```js
+import React from 'react';
+import PropTypes from 'prop-types';
+
+class MyComponent extends React.Component {
+  render() {
+    // ... do things with the props
+  }
+}
+
+MyComponent.propTypes = {
+  // You can declare that a prop is a specific JS primitive. By default, these
+  // are all optional.
+  optionalArray: PropTypes.array,
+  optionalBigInt: PropTypes.bigint,
+  optionalBool: PropTypes.bool,
+  optionalFunc: PropTypes.func,
+  optionalNumber: PropTypes.number,
+  optionalObject: PropTypes.object,
+  optionalString: PropTypes.string,
+  optionalSymbol: PropTypes.symbol,
+
+  // Anything that can be rendered: numbers, strings, elements or an array
+  // (or fragment) containing these types.
+  // see https://reactjs.org/docs/rendering-elements.html for more info
+  optionalNode: PropTypes.node,
+
+  // A React element (ie. <MyComponent />).
+  optionalElement: PropTypes.element,
+
+  // A React element type (eg. MyComponent).
+  // a function, string, or "element-like" object (eg. React.Fragment, Suspense, etc.)
+  // see https://github.com/facebook/react/blob/HEAD/packages/shared/isValidElementType.js
+  optionalElementType: PropTypes.elementType,
+
+  // You can also declare that a prop is an instance of a class. This uses
+  // JS's instanceof operator.
+  optionalMessage: PropTypes.instanceOf(Message),
+
+  // You can ensure that your prop is limited to specific values by treating
+  // it as an enum.
+  optionalEnum: PropTypes.oneOf(['News', 'Photos']),
+
+  // An object that could be one of many types
+  optionalUnion: PropTypes.oneOfType([
+    PropTypes.string,
+    PropTypes.number,
+    PropTypes.instanceOf(Message)
+  ]),
+
+  // An array of a certain type
+  optionalArrayOf: PropTypes.arrayOf(PropTypes.number),
+
+  // An object with property values of a certain type
+  optionalObjectOf: PropTypes.objectOf(PropTypes.number),
+
+  // You can chain any of the above with `isRequired` to make sure a warning
+  // is shown if the prop isn't provided.
+
+  // An object taking on a particular shape
+  optionalObjectWithShape: PropTypes.shape({
+    optionalProperty: PropTypes.string,
+    requiredProperty: PropTypes.number.isRequired
+  }),
+
+  // An object with warnings on extra properties
+  optionalObjectWithStrictShape: PropTypes.exact({
+    optionalProperty: PropTypes.string,
+    requiredProperty: PropTypes.number.isRequired
+  }),
+
+  requiredFunc: PropTypes.func.isRequired,
+
+  // A value of any data type
+  requiredAny: PropTypes.any.isRequired,
+
+  // You can also specify a custom validator. It should return an Error
+  // object if the validation fails. Don't `console.warn` or throw, as this
+  // won't work inside `oneOfType`.
+  customProp: function(props, propName, componentName) {
+    if (!/matchme/.test(props[propName])) {
+      return new Error(
+        'Invalid prop `' + propName + '` supplied to' +
+        ' `' + componentName + '`. Validation failed.'
+      );
+    }
+  },
+
+  // You can also supply a custom validator to `arrayOf` and `objectOf`.
+  // It should return an Error object if the validation fails. The validator
+  // will be called for each key in the array or object. The first two
+  // arguments of the validator are the array or object itself, and the
+  // current item's key.
+  customArrayProp: PropTypes.arrayOf(function(propValue, key, componentName, location, propFullName) {
+    if (!/matchme/.test(propValue[key])) {
+      return new Error(
+        'Invalid prop `' + propFullName + '` supplied to' +
+        ' `' + componentName + '`. Validation failed.'
+      );
+    }
+  })
+};
+```
+
+Refer to the [React documentation](https://facebook.github.io/react/docs/typechecking-with-proptypes.html) for more information.
+
+## Migrating from React.PropTypes
+
+Check out [Migrating from React.PropTypes](https://facebook.github.io/react/blog/2017/04/07/react-v15.5.0.html#migrating-from-react.proptypes) for details on how to migrate to `prop-types` from `React.PropTypes`.
+
+Note that this blog posts **mentions a codemod script that performs the conversion automatically**.
+
+There are also important notes below.
+
+## How to Depend on This Package?
+
+For apps, we recommend putting it in `dependencies` with a caret range.
+For example:
+
+```js
+  "dependencies": {
+    "prop-types": "^15.5.7"
+  }
+```
+
+For libraries, we *also* recommend leaving it in `dependencies`:
+
+```js
+  "dependencies": {
+    "prop-types": "^15.5.7"
+  },
+  "peerDependencies": {
+    "react": "^15.5.0"
+  }
+```
+
+**Note:** there are known issues in versions before 15.5.7 so we recommend using it as the minimal version.
+
+Make sure that the version range uses a caret (`^`) and thus is broad enough for npm to efficiently deduplicate packages.
+
+For UMD bundles of your components, make sure you **don’t** include `PropTypes` in the build. Usually this is done by marking it as an external (the specifics depend on your bundler), just like you do with React.
+
+## Compatibility
+
+### React 0.14
+
+This package is compatible with **React 0.14.9**. Compared to 0.14.8 (which was released in March of 2016), there are no other changes in 0.14.9, so it should be a painless upgrade.
+
+```shell
+# ATTENTION: Only run this if you still use React 0.14!
+npm install --save react@^0.14.9 react-dom@^0.14.9
+```
+
+### React 15+
+
+This package is compatible with **React 15.3.0** and higher.
+
+```
+npm install --save react@^15.3.0 react-dom@^15.3.0
+```
+
+### What happens on other React versions?
+
+It outputs warnings with the message below even though the developer doesn’t do anything wrong. Unfortunately there is no solution for this other than updating React to either 15.3.0 or higher, or 0.14.9 if you’re using React 0.14.
+
+## Difference from `React.PropTypes`: Don’t Call Validator Functions
+
+First of all, **which version of React are you using**? You might be seeing this message because a component library has updated to use `prop-types` package, but your version of React is incompatible with it. See the [above section](#compatibility) for more details.
+
+Are you using either React 0.14.9 or a version higher than React 15.3.0? Read on.
+
+When you migrate components to use the standalone `prop-types`, **all validator functions will start throwing an error if you call them directly**. This makes sure that nobody relies on them in production code, and it is safe to strip their implementations to optimize the bundle size.
+
+Code like this is still fine:
+
+```js
+MyComponent.propTypes = {
+  myProp: PropTypes.bool
+};
+```
+
+However, code like this will not work with the `prop-types` package:
+
+```js
+// Will not work with `prop-types` package!
+var errorOrNull = PropTypes.bool(42, 'myProp', 'MyComponent', 'prop');
+```
+
+It will throw an error:
+
+```
+Calling PropTypes validators directly is not supported by the `prop-types` package.
+Use PropTypes.checkPropTypes() to call them.
+```
+
+(If you see **a warning** rather than an error with this message, please check the [above section about compatibility](#compatibility).)
+
+This is new behavior, and you will only encounter it when you migrate from `React.PropTypes` to the `prop-types` package. For the vast majority of components, this doesn’t matter, and if you didn’t see [this warning](https://facebook.github.io/react/warnings/dont-call-proptypes.html) in your components, your code is safe to migrate. This is not a breaking change in React because you are only opting into this change for a component by explicitly changing your imports to use `prop-types`. If you temporarily need the old behavior, you can keep using `React.PropTypes` until React 16.
+
+**If you absolutely need to trigger the validation manually**, call `PropTypes.checkPropTypes()`. Unlike the validators themselves, this function is safe to call in production, as it will be replaced by an empty function:
+
+```js
+// Works with standalone PropTypes
+PropTypes.checkPropTypes(MyComponent.propTypes, props, 'prop', 'MyComponent');
+```
+See below for more info.
+
+**If you DO want to use validation in production**, you can choose to use the **development version** by importing/requiring `prop-types/prop-types` instead of `prop-types`.
+
+**You might also see this error** if you’re calling a `PropTypes` validator from your own custom `PropTypes` validator. In this case, the fix is to make sure that you are passing *all* of the arguments to the inner function. There is a more in-depth explanation of how to fix it [on this page](https://facebook.github.io/react/warnings/dont-call-proptypes.html#fixing-the-false-positive-in-third-party-proptypes). Alternatively, you can temporarily keep using `React.PropTypes` until React 16, as it would still only warn in this case.
+
+If you use a bundler like Browserify or Webpack, don’t forget to [follow these instructions](https://reactjs.org/docs/optimizing-performance.html#use-the-production-build) to correctly bundle your application in development or production mode. Otherwise you’ll ship unnecessary code to your users.
+
+## PropTypes.checkPropTypes
+
+React will automatically check the propTypes you set on the component, but if
+you are using PropTypes without React then you may want to manually call
+`PropTypes.checkPropTypes`, like so:
+
+```js
+const myPropTypes = {
+  name: PropTypes.string,
+  age: PropTypes.number,
+  // ... define your prop validations
+};
+
+const props = {
+  name: 'hello', // is valid
+  age: 'world', // not valid
+};
+
+// Let's say your component is called 'MyComponent'
+
+// Works with standalone PropTypes
+PropTypes.checkPropTypes(myPropTypes, props, 'prop', 'MyComponent');
+// This will warn as follows:
+// Warning: Failed prop type: Invalid prop `age` of type `string` supplied to
+// `MyComponent`, expected `number`.
+```
+
+## PropTypes.resetWarningCache()
+
+`PropTypes.checkPropTypes(...)` only `console.error`s a given message once. To reset the error warning cache in tests, call `PropTypes.resetWarningCache()`
+
+### License
+
+prop-types is [MIT licensed](./LICENSE).
diff --git a/igv_component/node_modules/prop-types/checkPropTypes.js b/igv_component/node_modules/prop-types/checkPropTypes.js
new file mode 100644
index 0000000000000000000000000000000000000000..481f2cf9b9c16d50b50c918c172cba4e2d1e21ba
--- /dev/null
+++ b/igv_component/node_modules/prop-types/checkPropTypes.js
@@ -0,0 +1,103 @@
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+var printWarning = function() {};
+
+if (process.env.NODE_ENV !== 'production') {
+  var ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');
+  var loggedTypeFailures = {};
+  var has = require('./lib/has');
+
+  printWarning = function(text) {
+    var message = 'Warning: ' + text;
+    if (typeof console !== 'undefined') {
+      console.error(message);
+    }
+    try {
+      // --- Welcome to debugging React ---
+      // This error was thrown as a convenience so that you can use this stack
+      // to find the callsite that caused this warning to fire.
+      throw new Error(message);
+    } catch (x) { /**/ }
+  };
+}
+
+/**
+ * Assert that the values match with the type specs.
+ * Error messages are memorized and will only be shown once.
+ *
+ * @param {object} typeSpecs Map of name to a ReactPropType
+ * @param {object} values Runtime values that need to be type-checked
+ * @param {string} location e.g. "prop", "context", "child context"
+ * @param {string} componentName Name of the component for error messages.
+ * @param {?Function} getStack Returns the component stack.
+ * @private
+ */
+function checkPropTypes(typeSpecs, values, location, componentName, getStack) {
+  if (process.env.NODE_ENV !== 'production') {
+    for (var typeSpecName in typeSpecs) {
+      if (has(typeSpecs, typeSpecName)) {
+        var error;
+        // Prop type validation may throw. In case they do, we don't want to
+        // fail the render phase where it didn't fail before. So we log it.
+        // After these have been cleaned up, we'll let them throw.
+        try {
+          // This is intentionally an invariant that gets caught. It's the same
+          // behavior as without this statement except with a better message.
+          if (typeof typeSpecs[typeSpecName] !== 'function') {
+            var err = Error(
+              (componentName || 'React class') + ': ' + location + ' type `' + typeSpecName + '` is invalid; ' +
+              'it must be a function, usually from the `prop-types` package, but received `' + typeof typeSpecs[typeSpecName] + '`.' +
+              'This often happens because of typos such as `PropTypes.function` instead of `PropTypes.func`.'
+            );
+            err.name = 'Invariant Violation';
+            throw err;
+          }
+          error = typeSpecs[typeSpecName](values, typeSpecName, componentName, location, null, ReactPropTypesSecret);
+        } catch (ex) {
+          error = ex;
+        }
+        if (error && !(error instanceof Error)) {
+          printWarning(
+            (componentName || 'React class') + ': type specification of ' +
+            location + ' `' + typeSpecName + '` is invalid; the type checker ' +
+            'function must return `null` or an `Error` but returned a ' + typeof error + '. ' +
+            'You may have forgotten to pass an argument to the type checker ' +
+            'creator (arrayOf, instanceOf, objectOf, oneOf, oneOfType, and ' +
+            'shape all require an argument).'
+          );
+        }
+        if (error instanceof Error && !(error.message in loggedTypeFailures)) {
+          // Only monitor this failure once because there tends to be a lot of the
+          // same error.
+          loggedTypeFailures[error.message] = true;
+
+          var stack = getStack ? getStack() : '';
+
+          printWarning(
+            'Failed ' + location + ' type: ' + error.message + (stack != null ? stack : '')
+          );
+        }
+      }
+    }
+  }
+}
+
+/**
+ * Resets warning cache when testing.
+ *
+ * @private
+ */
+checkPropTypes.resetWarningCache = function() {
+  if (process.env.NODE_ENV !== 'production') {
+    loggedTypeFailures = {};
+  }
+}
+
+module.exports = checkPropTypes;
diff --git a/igv_component/node_modules/prop-types/factory.js b/igv_component/node_modules/prop-types/factory.js
new file mode 100644
index 0000000000000000000000000000000000000000..abdf8e6dc7f88a6e5c55fdbb4e67b0f58e3f8c4b
--- /dev/null
+++ b/igv_component/node_modules/prop-types/factory.js
@@ -0,0 +1,19 @@
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+// React 15.5 references this module, and assumes PropTypes are still callable in production.
+// Therefore we re-export development-only version with all the PropTypes checks here.
+// However if one is migrating to the `prop-types` npm library, they will go through the
+// `index.js` entry point, and it will branch depending on the environment.
+var factory = require('./factoryWithTypeCheckers');
+module.exports = function(isValidElement) {
+  // It is still allowed in 15.5.
+  var throwOnDirectAccess = false;
+  return factory(isValidElement, throwOnDirectAccess);
+};
diff --git a/igv_component/node_modules/prop-types/factoryWithThrowingShims.js b/igv_component/node_modules/prop-types/factoryWithThrowingShims.js
new file mode 100644
index 0000000000000000000000000000000000000000..ac882672e1749bb2729c845fbcb374c65b6e123f
--- /dev/null
+++ b/igv_component/node_modules/prop-types/factoryWithThrowingShims.js
@@ -0,0 +1,65 @@
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+var ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');
+
+function emptyFunction() {}
+function emptyFunctionWithReset() {}
+emptyFunctionWithReset.resetWarningCache = emptyFunction;
+
+module.exports = function() {
+  function shim(props, propName, componentName, location, propFullName, secret) {
+    if (secret === ReactPropTypesSecret) {
+      // It is still safe when called from React.
+      return;
+    }
+    var err = new Error(
+      'Calling PropTypes validators directly is not supported by the `prop-types` package. ' +
+      'Use PropTypes.checkPropTypes() to call them. ' +
+      'Read more at http://fb.me/use-check-prop-types'
+    );
+    err.name = 'Invariant Violation';
+    throw err;
+  };
+  shim.isRequired = shim;
+  function getShim() {
+    return shim;
+  };
+  // Important!
+  // Keep this list in sync with production version in `./factoryWithTypeCheckers.js`.
+  var ReactPropTypes = {
+    array: shim,
+    bigint: shim,
+    bool: shim,
+    func: shim,
+    number: shim,
+    object: shim,
+    string: shim,
+    symbol: shim,
+
+    any: shim,
+    arrayOf: getShim,
+    element: shim,
+    elementType: shim,
+    instanceOf: getShim,
+    node: shim,
+    objectOf: getShim,
+    oneOf: getShim,
+    oneOfType: getShim,
+    shape: getShim,
+    exact: getShim,
+
+    checkPropTypes: emptyFunctionWithReset,
+    resetWarningCache: emptyFunction
+  };
+
+  ReactPropTypes.PropTypes = ReactPropTypes;
+
+  return ReactPropTypes;
+};
diff --git a/igv_component/node_modules/prop-types/factoryWithTypeCheckers.js b/igv_component/node_modules/prop-types/factoryWithTypeCheckers.js
new file mode 100644
index 0000000000000000000000000000000000000000..a88068e50585fe462e8aee742211c17075f091c2
--- /dev/null
+++ b/igv_component/node_modules/prop-types/factoryWithTypeCheckers.js
@@ -0,0 +1,610 @@
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+var ReactIs = require('react-is');
+var assign = require('object-assign');
+
+var ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');
+var has = require('./lib/has');
+var checkPropTypes = require('./checkPropTypes');
+
+var printWarning = function() {};
+
+if (process.env.NODE_ENV !== 'production') {
+  printWarning = function(text) {
+    var message = 'Warning: ' + text;
+    if (typeof console !== 'undefined') {
+      console.error(message);
+    }
+    try {
+      // --- Welcome to debugging React ---
+      // This error was thrown as a convenience so that you can use this stack
+      // to find the callsite that caused this warning to fire.
+      throw new Error(message);
+    } catch (x) {}
+  };
+}
+
+function emptyFunctionThatReturnsNull() {
+  return null;
+}
+
+module.exports = function(isValidElement, throwOnDirectAccess) {
+  /* global Symbol */
+  var ITERATOR_SYMBOL = typeof Symbol === 'function' && Symbol.iterator;
+  var FAUX_ITERATOR_SYMBOL = '@@iterator'; // Before Symbol spec.
+
+  /**
+   * Returns the iterator method function contained on the iterable object.
+   *
+   * Be sure to invoke the function with the iterable as context:
+   *
+   *     var iteratorFn = getIteratorFn(myIterable);
+   *     if (iteratorFn) {
+   *       var iterator = iteratorFn.call(myIterable);
+   *       ...
+   *     }
+   *
+   * @param {?object} maybeIterable
+   * @return {?function}
+   */
+  function getIteratorFn(maybeIterable) {
+    var iteratorFn = maybeIterable && (ITERATOR_SYMBOL && maybeIterable[ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL]);
+    if (typeof iteratorFn === 'function') {
+      return iteratorFn;
+    }
+  }
+
+  /**
+   * Collection of methods that allow declaration and validation of props that are
+   * supplied to React components. Example usage:
+   *
+   *   var Props = require('ReactPropTypes');
+   *   var MyArticle = React.createClass({
+   *     propTypes: {
+   *       // An optional string prop named "description".
+   *       description: Props.string,
+   *
+   *       // A required enum prop named "category".
+   *       category: Props.oneOf(['News','Photos']).isRequired,
+   *
+   *       // A prop named "dialog" that requires an instance of Dialog.
+   *       dialog: Props.instanceOf(Dialog).isRequired
+   *     },
+   *     render: function() { ... }
+   *   });
+   *
+   * A more formal specification of how these methods are used:
+   *
+   *   type := array|bool|func|object|number|string|oneOf([...])|instanceOf(...)
+   *   decl := ReactPropTypes.{type}(.isRequired)?
+   *
+   * Each and every declaration produces a function with the same signature. This
+   * allows the creation of custom validation functions. For example:
+   *
+   *  var MyLink = React.createClass({
+   *    propTypes: {
+   *      // An optional string or URI prop named "href".
+   *      href: function(props, propName, componentName) {
+   *        var propValue = props[propName];
+   *        if (propValue != null && typeof propValue !== 'string' &&
+   *            !(propValue instanceof URI)) {
+   *          return new Error(
+   *            'Expected a string or an URI for ' + propName + ' in ' +
+   *            componentName
+   *          );
+   *        }
+   *      }
+   *    },
+   *    render: function() {...}
+   *  });
+   *
+   * @internal
+   */
+
+  var ANONYMOUS = '<<anonymous>>';
+
+  // Important!
+  // Keep this list in sync with production version in `./factoryWithThrowingShims.js`.
+  var ReactPropTypes = {
+    array: createPrimitiveTypeChecker('array'),
+    bigint: createPrimitiveTypeChecker('bigint'),
+    bool: createPrimitiveTypeChecker('boolean'),
+    func: createPrimitiveTypeChecker('function'),
+    number: createPrimitiveTypeChecker('number'),
+    object: createPrimitiveTypeChecker('object'),
+    string: createPrimitiveTypeChecker('string'),
+    symbol: createPrimitiveTypeChecker('symbol'),
+
+    any: createAnyTypeChecker(),
+    arrayOf: createArrayOfTypeChecker,
+    element: createElementTypeChecker(),
+    elementType: createElementTypeTypeChecker(),
+    instanceOf: createInstanceTypeChecker,
+    node: createNodeChecker(),
+    objectOf: createObjectOfTypeChecker,
+    oneOf: createEnumTypeChecker,
+    oneOfType: createUnionTypeChecker,
+    shape: createShapeTypeChecker,
+    exact: createStrictShapeTypeChecker,
+  };
+
+  /**
+   * inlined Object.is polyfill to avoid requiring consumers ship their own
+   * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
+   */
+  /*eslint-disable no-self-compare*/
+  function is(x, y) {
+    // SameValue algorithm
+    if (x === y) {
+      // Steps 1-5, 7-10
+      // Steps 6.b-6.e: +0 != -0
+      return x !== 0 || 1 / x === 1 / y;
+    } else {
+      // Step 6.a: NaN == NaN
+      return x !== x && y !== y;
+    }
+  }
+  /*eslint-enable no-self-compare*/
+
+  /**
+   * We use an Error-like object for backward compatibility as people may call
+   * PropTypes directly and inspect their output. However, we don't use real
+   * Errors anymore. We don't inspect their stack anyway, and creating them
+   * is prohibitively expensive if they are created too often, such as what
+   * happens in oneOfType() for any type before the one that matched.
+   */
+  function PropTypeError(message, data) {
+    this.message = message;
+    this.data = data && typeof data === 'object' ? data: {};
+    this.stack = '';
+  }
+  // Make `instanceof Error` still work for returned errors.
+  PropTypeError.prototype = Error.prototype;
+
+  function createChainableTypeChecker(validate) {
+    if (process.env.NODE_ENV !== 'production') {
+      var manualPropTypeCallCache = {};
+      var manualPropTypeWarningCount = 0;
+    }
+    function checkType(isRequired, props, propName, componentName, location, propFullName, secret) {
+      componentName = componentName || ANONYMOUS;
+      propFullName = propFullName || propName;
+
+      if (secret !== ReactPropTypesSecret) {
+        if (throwOnDirectAccess) {
+          // New behavior only for users of `prop-types` package
+          var err = new Error(
+            'Calling PropTypes validators directly is not supported by the `prop-types` package. ' +
+            'Use `PropTypes.checkPropTypes()` to call them. ' +
+            'Read more at http://fb.me/use-check-prop-types'
+          );
+          err.name = 'Invariant Violation';
+          throw err;
+        } else if (process.env.NODE_ENV !== 'production' && typeof console !== 'undefined') {
+          // Old behavior for people using React.PropTypes
+          var cacheKey = componentName + ':' + propName;
+          if (
+            !manualPropTypeCallCache[cacheKey] &&
+            // Avoid spamming the console because they are often not actionable except for lib authors
+            manualPropTypeWarningCount < 3
+          ) {
+            printWarning(
+              'You are manually calling a React.PropTypes validation ' +
+              'function for the `' + propFullName + '` prop on `' + componentName + '`. This is deprecated ' +
+              'and will throw in the standalone `prop-types` package. ' +
+              'You may be seeing this warning due to a third-party PropTypes ' +
+              'library. See https://fb.me/react-warning-dont-call-proptypes ' + 'for details.'
+            );
+            manualPropTypeCallCache[cacheKey] = true;
+            manualPropTypeWarningCount++;
+          }
+        }
+      }
+      if (props[propName] == null) {
+        if (isRequired) {
+          if (props[propName] === null) {
+            return new PropTypeError('The ' + location + ' `' + propFullName + '` is marked as required ' + ('in `' + componentName + '`, but its value is `null`.'));
+          }
+          return new PropTypeError('The ' + location + ' `' + propFullName + '` is marked as required in ' + ('`' + componentName + '`, but its value is `undefined`.'));
+        }
+        return null;
+      } else {
+        return validate(props, propName, componentName, location, propFullName);
+      }
+    }
+
+    var chainedCheckType = checkType.bind(null, false);
+    chainedCheckType.isRequired = checkType.bind(null, true);
+
+    return chainedCheckType;
+  }
+
+  function createPrimitiveTypeChecker(expectedType) {
+    function validate(props, propName, componentName, location, propFullName, secret) {
+      var propValue = props[propName];
+      var propType = getPropType(propValue);
+      if (propType !== expectedType) {
+        // `propValue` being instance of, say, date/regexp, pass the 'object'
+        // check, but we can offer a more precise error message here rather than
+        // 'of type `object`'.
+        var preciseType = getPreciseType(propValue);
+
+        return new PropTypeError(
+          'Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + preciseType + '` supplied to `' + componentName + '`, expected ') + ('`' + expectedType + '`.'),
+          {expectedType: expectedType}
+        );
+      }
+      return null;
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createAnyTypeChecker() {
+    return createChainableTypeChecker(emptyFunctionThatReturnsNull);
+  }
+
+  function createArrayOfTypeChecker(typeChecker) {
+    function validate(props, propName, componentName, location, propFullName) {
+      if (typeof typeChecker !== 'function') {
+        return new PropTypeError('Property `' + propFullName + '` of component `' + componentName + '` has invalid PropType notation inside arrayOf.');
+      }
+      var propValue = props[propName];
+      if (!Array.isArray(propValue)) {
+        var propType = getPropType(propValue);
+        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected an array.'));
+      }
+      for (var i = 0; i < propValue.length; i++) {
+        var error = typeChecker(propValue, i, componentName, location, propFullName + '[' + i + ']', ReactPropTypesSecret);
+        if (error instanceof Error) {
+          return error;
+        }
+      }
+      return null;
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createElementTypeChecker() {
+    function validate(props, propName, componentName, location, propFullName) {
+      var propValue = props[propName];
+      if (!isValidElement(propValue)) {
+        var propType = getPropType(propValue);
+        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected a single ReactElement.'));
+      }
+      return null;
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createElementTypeTypeChecker() {
+    function validate(props, propName, componentName, location, propFullName) {
+      var propValue = props[propName];
+      if (!ReactIs.isValidElementType(propValue)) {
+        var propType = getPropType(propValue);
+        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected a single ReactElement type.'));
+      }
+      return null;
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createInstanceTypeChecker(expectedClass) {
+    function validate(props, propName, componentName, location, propFullName) {
+      if (!(props[propName] instanceof expectedClass)) {
+        var expectedClassName = expectedClass.name || ANONYMOUS;
+        var actualClassName = getClassName(props[propName]);
+        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + actualClassName + '` supplied to `' + componentName + '`, expected ') + ('instance of `' + expectedClassName + '`.'));
+      }
+      return null;
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createEnumTypeChecker(expectedValues) {
+    if (!Array.isArray(expectedValues)) {
+      if (process.env.NODE_ENV !== 'production') {
+        if (arguments.length > 1) {
+          printWarning(
+            'Invalid arguments supplied to oneOf, expected an array, got ' + arguments.length + ' arguments. ' +
+            'A common mistake is to write oneOf(x, y, z) instead of oneOf([x, y, z]).'
+          );
+        } else {
+          printWarning('Invalid argument supplied to oneOf, expected an array.');
+        }
+      }
+      return emptyFunctionThatReturnsNull;
+    }
+
+    function validate(props, propName, componentName, location, propFullName) {
+      var propValue = props[propName];
+      for (var i = 0; i < expectedValues.length; i++) {
+        if (is(propValue, expectedValues[i])) {
+          return null;
+        }
+      }
+
+      var valuesString = JSON.stringify(expectedValues, function replacer(key, value) {
+        var type = getPreciseType(value);
+        if (type === 'symbol') {
+          return String(value);
+        }
+        return value;
+      });
+      return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of value `' + String(propValue) + '` ' + ('supplied to `' + componentName + '`, expected one of ' + valuesString + '.'));
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createObjectOfTypeChecker(typeChecker) {
+    function validate(props, propName, componentName, location, propFullName) {
+      if (typeof typeChecker !== 'function') {
+        return new PropTypeError('Property `' + propFullName + '` of component `' + componentName + '` has invalid PropType notation inside objectOf.');
+      }
+      var propValue = props[propName];
+      var propType = getPropType(propValue);
+      if (propType !== 'object') {
+        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected an object.'));
+      }
+      for (var key in propValue) {
+        if (has(propValue, key)) {
+          var error = typeChecker(propValue, key, componentName, location, propFullName + '.' + key, ReactPropTypesSecret);
+          if (error instanceof Error) {
+            return error;
+          }
+        }
+      }
+      return null;
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createUnionTypeChecker(arrayOfTypeCheckers) {
+    if (!Array.isArray(arrayOfTypeCheckers)) {
+      process.env.NODE_ENV !== 'production' ? printWarning('Invalid argument supplied to oneOfType, expected an instance of array.') : void 0;
+      return emptyFunctionThatReturnsNull;
+    }
+
+    for (var i = 0; i < arrayOfTypeCheckers.length; i++) {
+      var checker = arrayOfTypeCheckers[i];
+      if (typeof checker !== 'function') {
+        printWarning(
+          'Invalid argument supplied to oneOfType. Expected an array of check functions, but ' +
+          'received ' + getPostfixForTypeWarning(checker) + ' at index ' + i + '.'
+        );
+        return emptyFunctionThatReturnsNull;
+      }
+    }
+
+    function validate(props, propName, componentName, location, propFullName) {
+      var expectedTypes = [];
+      for (var i = 0; i < arrayOfTypeCheckers.length; i++) {
+        var checker = arrayOfTypeCheckers[i];
+        var checkerResult = checker(props, propName, componentName, location, propFullName, ReactPropTypesSecret);
+        if (checkerResult == null) {
+          return null;
+        }
+        if (checkerResult.data && has(checkerResult.data, 'expectedType')) {
+          expectedTypes.push(checkerResult.data.expectedType);
+        }
+      }
+      var expectedTypesMessage = (expectedTypes.length > 0) ? ', expected one of type [' + expectedTypes.join(', ') + ']': '';
+      return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` supplied to ' + ('`' + componentName + '`' + expectedTypesMessage + '.'));
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createNodeChecker() {
+    function validate(props, propName, componentName, location, propFullName) {
+      if (!isNode(props[propName])) {
+        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` supplied to ' + ('`' + componentName + '`, expected a ReactNode.'));
+      }
+      return null;
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function invalidValidatorError(componentName, location, propFullName, key, type) {
+    return new PropTypeError(
+      (componentName || 'React class') + ': ' + location + ' type `' + propFullName + '.' + key + '` is invalid; ' +
+      'it must be a function, usually from the `prop-types` package, but received `' + type + '`.'
+    );
+  }
+
+  function createShapeTypeChecker(shapeTypes) {
+    function validate(props, propName, componentName, location, propFullName) {
+      var propValue = props[propName];
+      var propType = getPropType(propValue);
+      if (propType !== 'object') {
+        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type `' + propType + '` ' + ('supplied to `' + componentName + '`, expected `object`.'));
+      }
+      for (var key in shapeTypes) {
+        var checker = shapeTypes[key];
+        if (typeof checker !== 'function') {
+          return invalidValidatorError(componentName, location, propFullName, key, getPreciseType(checker));
+        }
+        var error = checker(propValue, key, componentName, location, propFullName + '.' + key, ReactPropTypesSecret);
+        if (error) {
+          return error;
+        }
+      }
+      return null;
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createStrictShapeTypeChecker(shapeTypes) {
+    function validate(props, propName, componentName, location, propFullName) {
+      var propValue = props[propName];
+      var propType = getPropType(propValue);
+      if (propType !== 'object') {
+        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type `' + propType + '` ' + ('supplied to `' + componentName + '`, expected `object`.'));
+      }
+      // We need to check all keys in case some are required but missing from props.
+      var allKeys = assign({}, props[propName], shapeTypes);
+      for (var key in allKeys) {
+        var checker = shapeTypes[key];
+        if (has(shapeTypes, key) && typeof checker !== 'function') {
+          return invalidValidatorError(componentName, location, propFullName, key, getPreciseType(checker));
+        }
+        if (!checker) {
+          return new PropTypeError(
+            'Invalid ' + location + ' `' + propFullName + '` key `' + key + '` supplied to `' + componentName + '`.' +
+            '\nBad object: ' + JSON.stringify(props[propName], null, '  ') +
+            '\nValid keys: ' + JSON.stringify(Object.keys(shapeTypes), null, '  ')
+          );
+        }
+        var error = checker(propValue, key, componentName, location, propFullName + '.' + key, ReactPropTypesSecret);
+        if (error) {
+          return error;
+        }
+      }
+      return null;
+    }
+
+    return createChainableTypeChecker(validate);
+  }
+
+  function isNode(propValue) {
+    switch (typeof propValue) {
+      case 'number':
+      case 'string':
+      case 'undefined':
+        return true;
+      case 'boolean':
+        return !propValue;
+      case 'object':
+        if (Array.isArray(propValue)) {
+          return propValue.every(isNode);
+        }
+        if (propValue === null || isValidElement(propValue)) {
+          return true;
+        }
+
+        var iteratorFn = getIteratorFn(propValue);
+        if (iteratorFn) {
+          var iterator = iteratorFn.call(propValue);
+          var step;
+          if (iteratorFn !== propValue.entries) {
+            while (!(step = iterator.next()).done) {
+              if (!isNode(step.value)) {
+                return false;
+              }
+            }
+          } else {
+            // Iterator will provide entry [k,v] tuples rather than values.
+            while (!(step = iterator.next()).done) {
+              var entry = step.value;
+              if (entry) {
+                if (!isNode(entry[1])) {
+                  return false;
+                }
+              }
+            }
+          }
+        } else {
+          return false;
+        }
+
+        return true;
+      default:
+        return false;
+    }
+  }
+
+  function isSymbol(propType, propValue) {
+    // Native Symbol.
+    if (propType === 'symbol') {
+      return true;
+    }
+
+    // falsy value can't be a Symbol
+    if (!propValue) {
+      return false;
+    }
+
+    // 19.4.3.5 Symbol.prototype[@@toStringTag] === 'Symbol'
+    if (propValue['@@toStringTag'] === 'Symbol') {
+      return true;
+    }
+
+    // Fallback for non-spec compliant Symbols which are polyfilled.
+    if (typeof Symbol === 'function' && propValue instanceof Symbol) {
+      return true;
+    }
+
+    return false;
+  }
+
+  // Equivalent of `typeof` but with special handling for array and regexp.
+  function getPropType(propValue) {
+    var propType = typeof propValue;
+    if (Array.isArray(propValue)) {
+      return 'array';
+    }
+    if (propValue instanceof RegExp) {
+      // Old webkits (at least until Android 4.0) return 'function' rather than
+      // 'object' for typeof a RegExp. We'll normalize this here so that /bla/
+      // passes PropTypes.object.
+      return 'object';
+    }
+    if (isSymbol(propType, propValue)) {
+      return 'symbol';
+    }
+    return propType;
+  }
+
+  // This handles more types than `getPropType`. Only used for error messages.
+  // See `createPrimitiveTypeChecker`.
+  function getPreciseType(propValue) {
+    if (typeof propValue === 'undefined' || propValue === null) {
+      return '' + propValue;
+    }
+    var propType = getPropType(propValue);
+    if (propType === 'object') {
+      if (propValue instanceof Date) {
+        return 'date';
+      } else if (propValue instanceof RegExp) {
+        return 'regexp';
+      }
+    }
+    return propType;
+  }
+
+  // Returns a string that is postfixed to a warning about an invalid type.
+  // For example, "undefined" or "of type array"
+  function getPostfixForTypeWarning(value) {
+    var type = getPreciseType(value);
+    switch (type) {
+      case 'array':
+      case 'object':
+        return 'an ' + type;
+      case 'boolean':
+      case 'date':
+      case 'regexp':
+        return 'a ' + type;
+      default:
+        return type;
+    }
+  }
+
+  // Returns class name of the object, if any.
+  function getClassName(propValue) {
+    if (!propValue.constructor || !propValue.constructor.name) {
+      return ANONYMOUS;
+    }
+    return propValue.constructor.name;
+  }
+
+  ReactPropTypes.checkPropTypes = checkPropTypes;
+  ReactPropTypes.resetWarningCache = checkPropTypes.resetWarningCache;
+  ReactPropTypes.PropTypes = ReactPropTypes;
+
+  return ReactPropTypes;
+};
diff --git a/igv_component/node_modules/prop-types/index.js b/igv_component/node_modules/prop-types/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..e9ef51d6f39a3a26da5023d5470d73882139727a
--- /dev/null
+++ b/igv_component/node_modules/prop-types/index.js
@@ -0,0 +1,19 @@
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+if (process.env.NODE_ENV !== 'production') {
+  var ReactIs = require('react-is');
+
+  // By explicitly using `prop-types` you are opting into new development behavior.
+  // http://fb.me/prop-types-in-prod
+  var throwOnDirectAccess = true;
+  module.exports = require('./factoryWithTypeCheckers')(ReactIs.isElement, throwOnDirectAccess);
+} else {
+  // By explicitly using `prop-types` you are opting into new production behavior.
+  // http://fb.me/prop-types-in-prod
+  module.exports = require('./factoryWithThrowingShims')();
+}
diff --git a/igv_component/node_modules/prop-types/lib/ReactPropTypesSecret.js b/igv_component/node_modules/prop-types/lib/ReactPropTypesSecret.js
new file mode 100644
index 0000000000000000000000000000000000000000..f54525e7f12a47338a6fb8cb4527b30c6affbe6e
--- /dev/null
+++ b/igv_component/node_modules/prop-types/lib/ReactPropTypesSecret.js
@@ -0,0 +1,12 @@
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+var ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';
+
+module.exports = ReactPropTypesSecret;
diff --git a/igv_component/node_modules/prop-types/lib/has.js b/igv_component/node_modules/prop-types/lib/has.js
new file mode 100644
index 0000000000000000000000000000000000000000..007bae3226e8c675d160309e42013f5ab46f991b
--- /dev/null
+++ b/igv_component/node_modules/prop-types/lib/has.js
@@ -0,0 +1 @@
+module.exports = Function.call.bind(Object.prototype.hasOwnProperty);
diff --git a/igv_component/node_modules/prop-types/package.json b/igv_component/node_modules/prop-types/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..63daf70409b51c7dcea190cf15bf931f5faedf04
--- /dev/null
+++ b/igv_component/node_modules/prop-types/package.json
@@ -0,0 +1,60 @@
+{
+  "name": "prop-types",
+  "version": "15.8.1",
+  "description": "Runtime type checking for React props and similar objects.",
+  "sideEffects": false,
+  "main": "index.js",
+  "license": "MIT",
+  "files": [
+    "LICENSE",
+    "README.md",
+    "checkPropTypes.js",
+    "factory.js",
+    "factoryWithThrowingShims.js",
+    "factoryWithTypeCheckers.js",
+    "index.js",
+    "prop-types.js",
+    "prop-types.min.js",
+    "lib"
+  ],
+  "repository": "facebook/prop-types",
+  "keywords": [
+    "react"
+  ],
+  "bugs": {
+    "url": "https://github.com/facebook/prop-types/issues"
+  },
+  "homepage": "https://facebook.github.io/react/",
+  "dependencies": {
+    "loose-envify": "^1.4.0",
+    "object-assign": "^4.1.1",
+    "react-is": "^16.13.1"
+  },
+  "scripts": {
+    "pretest": "npm run lint",
+    "lint": "eslint .",
+    "test": "npm run tests-only",
+    "tests-only": "jest",
+    "umd": "NODE_ENV=development browserify index.js -t loose-envify --standalone PropTypes -o prop-types.js",
+    "umd-min": "NODE_ENV=production browserify index.js -t loose-envify -t uglifyify --standalone PropTypes  -p bundle-collapser/plugin -o | uglifyjs --compress unused,dead_code -o prop-types.min.js",
+    "build": "yarn umd && yarn umd-min",
+    "prepublish": "not-in-publish || yarn build"
+  },
+  "devDependencies": {
+    "babel-jest": "^19.0.0",
+    "babel-preset-react": "^6.24.1",
+    "browserify": "^16.5.0",
+    "bundle-collapser": "^1.4.0",
+    "eslint": "^8.6.0",
+    "in-publish": "^2.0.1",
+    "jest": "^19.0.2",
+    "react": "^15.7.0",
+    "uglifyify": "^5.0.2",
+    "uglifyjs": "^2.4.11"
+  },
+  "browserify": {
+    "transform": [
+      "loose-envify"
+    ]
+  }
+}
diff --git a/igv_component/node_modules/prop-types/prop-types.js b/igv_component/node_modules/prop-types/prop-types.js
new file mode 100644
index 0000000000000000000000000000000000000000..a5a15ddb55020d688e7fb9f5f5f0c53d8d3be5fe
--- /dev/null
+++ b/igv_component/node_modules/prop-types/prop-types.js
@@ -0,0 +1,1315 @@
+(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.PropTypes = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[function(require,module,exports){
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+var printWarning = function() {};
+
+if ("development" !== 'production') {
+  var ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');
+  var loggedTypeFailures = {};
+  var has = require('./lib/has');
+
+  printWarning = function(text) {
+    var message = 'Warning: ' + text;
+    if (typeof console !== 'undefined') {
+      console.error(message);
+    }
+    try {
+      // --- Welcome to debugging React ---
+      // This error was thrown as a convenience so that you can use this stack
+      // to find the callsite that caused this warning to fire.
+      throw new Error(message);
+    } catch (x) { /**/ }
+  };
+}
+
+/**
+ * Assert that the values match with the type specs.
+ * Error messages are memorized and will only be shown once.
+ *
+ * @param {object} typeSpecs Map of name to a ReactPropType
+ * @param {object} values Runtime values that need to be type-checked
+ * @param {string} location e.g. "prop", "context", "child context"
+ * @param {string} componentName Name of the component for error messages.
+ * @param {?Function} getStack Returns the component stack.
+ * @private
+ */
+function checkPropTypes(typeSpecs, values, location, componentName, getStack) {
+  if ("development" !== 'production') {
+    for (var typeSpecName in typeSpecs) {
+      if (has(typeSpecs, typeSpecName)) {
+        var error;
+        // Prop type validation may throw. In case they do, we don't want to
+        // fail the render phase where it didn't fail before. So we log it.
+        // After these have been cleaned up, we'll let them throw.
+        try {
+          // This is intentionally an invariant that gets caught. It's the same
+          // behavior as without this statement except with a better message.
+          if (typeof typeSpecs[typeSpecName] !== 'function') {
+            var err = Error(
+              (componentName || 'React class') + ': ' + location + ' type `' + typeSpecName + '` is invalid; ' +
+              'it must be a function, usually from the `prop-types` package, but received `' + typeof typeSpecs[typeSpecName] + '`.' +
+              'This often happens because of typos such as `PropTypes.function` instead of `PropTypes.func`.'
+            );
+            err.name = 'Invariant Violation';
+            throw err;
+          }
+          error = typeSpecs[typeSpecName](values, typeSpecName, componentName, location, null, ReactPropTypesSecret);
+        } catch (ex) {
+          error = ex;
+        }
+        if (error && !(error instanceof Error)) {
+          printWarning(
+            (componentName || 'React class') + ': type specification of ' +
+            location + ' `' + typeSpecName + '` is invalid; the type checker ' +
+            'function must return `null` or an `Error` but returned a ' + typeof error + '. ' +
+            'You may have forgotten to pass an argument to the type checker ' +
+            'creator (arrayOf, instanceOf, objectOf, oneOf, oneOfType, and ' +
+            'shape all require an argument).'
+          );
+        }
+        if (error instanceof Error && !(error.message in loggedTypeFailures)) {
+          // Only monitor this failure once because there tends to be a lot of the
+          // same error.
+          loggedTypeFailures[error.message] = true;
+
+          var stack = getStack ? getStack() : '';
+
+          printWarning(
+            'Failed ' + location + ' type: ' + error.message + (stack != null ? stack : '')
+          );
+        }
+      }
+    }
+  }
+}
+
+/**
+ * Resets warning cache when testing.
+ *
+ * @private
+ */
+checkPropTypes.resetWarningCache = function() {
+  if ("development" !== 'production') {
+    loggedTypeFailures = {};
+  }
+}
+
+module.exports = checkPropTypes;
+
+},{"./lib/ReactPropTypesSecret":5,"./lib/has":6}],2:[function(require,module,exports){
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+var ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');
+
+function emptyFunction() {}
+function emptyFunctionWithReset() {}
+emptyFunctionWithReset.resetWarningCache = emptyFunction;
+
+module.exports = function() {
+  function shim(props, propName, componentName, location, propFullName, secret) {
+    if (secret === ReactPropTypesSecret) {
+      // It is still safe when called from React.
+      return;
+    }
+    var err = new Error(
+      'Calling PropTypes validators directly is not supported by the `prop-types` package. ' +
+      'Use PropTypes.checkPropTypes() to call them. ' +
+      'Read more at http://fb.me/use-check-prop-types'
+    );
+    err.name = 'Invariant Violation';
+    throw err;
+  };
+  shim.isRequired = shim;
+  function getShim() {
+    return shim;
+  };
+  // Important!
+  // Keep this list in sync with production version in `./factoryWithTypeCheckers.js`.
+  var ReactPropTypes = {
+    array: shim,
+    bigint: shim,
+    bool: shim,
+    func: shim,
+    number: shim,
+    object: shim,
+    string: shim,
+    symbol: shim,
+
+    any: shim,
+    arrayOf: getShim,
+    element: shim,
+    elementType: shim,
+    instanceOf: getShim,
+    node: shim,
+    objectOf: getShim,
+    oneOf: getShim,
+    oneOfType: getShim,
+    shape: getShim,
+    exact: getShim,
+
+    checkPropTypes: emptyFunctionWithReset,
+    resetWarningCache: emptyFunction
+  };
+
+  ReactPropTypes.PropTypes = ReactPropTypes;
+
+  return ReactPropTypes;
+};
+
+},{"./lib/ReactPropTypesSecret":5}],3:[function(require,module,exports){
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+var ReactIs = require('react-is');
+var assign = require('object-assign');
+
+var ReactPropTypesSecret = require('./lib/ReactPropTypesSecret');
+var has = require('./lib/has');
+var checkPropTypes = require('./checkPropTypes');
+
+var printWarning = function() {};
+
+if ("development" !== 'production') {
+  printWarning = function(text) {
+    var message = 'Warning: ' + text;
+    if (typeof console !== 'undefined') {
+      console.error(message);
+    }
+    try {
+      // --- Welcome to debugging React ---
+      // This error was thrown as a convenience so that you can use this stack
+      // to find the callsite that caused this warning to fire.
+      throw new Error(message);
+    } catch (x) {}
+  };
+}
+
+function emptyFunctionThatReturnsNull() {
+  return null;
+}
+
+module.exports = function(isValidElement, throwOnDirectAccess) {
+  /* global Symbol */
+  var ITERATOR_SYMBOL = typeof Symbol === 'function' && Symbol.iterator;
+  var FAUX_ITERATOR_SYMBOL = '@@iterator'; // Before Symbol spec.
+
+  /**
+   * Returns the iterator method function contained on the iterable object.
+   *
+   * Be sure to invoke the function with the iterable as context:
+   *
+   *     var iteratorFn = getIteratorFn(myIterable);
+   *     if (iteratorFn) {
+   *       var iterator = iteratorFn.call(myIterable);
+   *       ...
+   *     }
+   *
+   * @param {?object} maybeIterable
+   * @return {?function}
+   */
+  function getIteratorFn(maybeIterable) {
+    var iteratorFn = maybeIterable && (ITERATOR_SYMBOL && maybeIterable[ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL]);
+    if (typeof iteratorFn === 'function') {
+      return iteratorFn;
+    }
+  }
+
+  /**
+   * Collection of methods that allow declaration and validation of props that are
+   * supplied to React components. Example usage:
+   *
+   *   var Props = require('ReactPropTypes');
+   *   var MyArticle = React.createClass({
+   *     propTypes: {
+   *       // An optional string prop named "description".
+   *       description: Props.string,
+   *
+   *       // A required enum prop named "category".
+   *       category: Props.oneOf(['News','Photos']).isRequired,
+   *
+   *       // A prop named "dialog" that requires an instance of Dialog.
+   *       dialog: Props.instanceOf(Dialog).isRequired
+   *     },
+   *     render: function() { ... }
+   *   });
+   *
+   * A more formal specification of how these methods are used:
+   *
+   *   type := array|bool|func|object|number|string|oneOf([...])|instanceOf(...)
+   *   decl := ReactPropTypes.{type}(.isRequired)?
+   *
+   * Each and every declaration produces a function with the same signature. This
+   * allows the creation of custom validation functions. For example:
+   *
+   *  var MyLink = React.createClass({
+   *    propTypes: {
+   *      // An optional string or URI prop named "href".
+   *      href: function(props, propName, componentName) {
+   *        var propValue = props[propName];
+   *        if (propValue != null && typeof propValue !== 'string' &&
+   *            !(propValue instanceof URI)) {
+   *          return new Error(
+   *            'Expected a string or an URI for ' + propName + ' in ' +
+   *            componentName
+   *          );
+   *        }
+   *      }
+   *    },
+   *    render: function() {...}
+   *  });
+   *
+   * @internal
+   */
+
+  var ANONYMOUS = '<<anonymous>>';
+
+  // Important!
+  // Keep this list in sync with production version in `./factoryWithThrowingShims.js`.
+  var ReactPropTypes = {
+    array: createPrimitiveTypeChecker('array'),
+    bigint: createPrimitiveTypeChecker('bigint'),
+    bool: createPrimitiveTypeChecker('boolean'),
+    func: createPrimitiveTypeChecker('function'),
+    number: createPrimitiveTypeChecker('number'),
+    object: createPrimitiveTypeChecker('object'),
+    string: createPrimitiveTypeChecker('string'),
+    symbol: createPrimitiveTypeChecker('symbol'),
+
+    any: createAnyTypeChecker(),
+    arrayOf: createArrayOfTypeChecker,
+    element: createElementTypeChecker(),
+    elementType: createElementTypeTypeChecker(),
+    instanceOf: createInstanceTypeChecker,
+    node: createNodeChecker(),
+    objectOf: createObjectOfTypeChecker,
+    oneOf: createEnumTypeChecker,
+    oneOfType: createUnionTypeChecker,
+    shape: createShapeTypeChecker,
+    exact: createStrictShapeTypeChecker,
+  };
+
+  /**
+   * inlined Object.is polyfill to avoid requiring consumers ship their own
+   * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
+   */
+  /*eslint-disable no-self-compare*/
+  function is(x, y) {
+    // SameValue algorithm
+    if (x === y) {
+      // Steps 1-5, 7-10
+      // Steps 6.b-6.e: +0 != -0
+      return x !== 0 || 1 / x === 1 / y;
+    } else {
+      // Step 6.a: NaN == NaN
+      return x !== x && y !== y;
+    }
+  }
+  /*eslint-enable no-self-compare*/
+
+  /**
+   * We use an Error-like object for backward compatibility as people may call
+   * PropTypes directly and inspect their output. However, we don't use real
+   * Errors anymore. We don't inspect their stack anyway, and creating them
+   * is prohibitively expensive if they are created too often, such as what
+   * happens in oneOfType() for any type before the one that matched.
+   */
+  function PropTypeError(message, data) {
+    this.message = message;
+    this.data = data && typeof data === 'object' ? data: {};
+    this.stack = '';
+  }
+  // Make `instanceof Error` still work for returned errors.
+  PropTypeError.prototype = Error.prototype;
+
+  function createChainableTypeChecker(validate) {
+    if ("development" !== 'production') {
+      var manualPropTypeCallCache = {};
+      var manualPropTypeWarningCount = 0;
+    }
+    function checkType(isRequired, props, propName, componentName, location, propFullName, secret) {
+      componentName = componentName || ANONYMOUS;
+      propFullName = propFullName || propName;
+
+      if (secret !== ReactPropTypesSecret) {
+        if (throwOnDirectAccess) {
+          // New behavior only for users of `prop-types` package
+          var err = new Error(
+            'Calling PropTypes validators directly is not supported by the `prop-types` package. ' +
+            'Use `PropTypes.checkPropTypes()` to call them. ' +
+            'Read more at http://fb.me/use-check-prop-types'
+          );
+          err.name = 'Invariant Violation';
+          throw err;
+        } else if ("development" !== 'production' && typeof console !== 'undefined') {
+          // Old behavior for people using React.PropTypes
+          var cacheKey = componentName + ':' + propName;
+          if (
+            !manualPropTypeCallCache[cacheKey] &&
+            // Avoid spamming the console because they are often not actionable except for lib authors
+            manualPropTypeWarningCount < 3
+          ) {
+            printWarning(
+              'You are manually calling a React.PropTypes validation ' +
+              'function for the `' + propFullName + '` prop on `' + componentName + '`. This is deprecated ' +
+              'and will throw in the standalone `prop-types` package. ' +
+              'You may be seeing this warning due to a third-party PropTypes ' +
+              'library. See https://fb.me/react-warning-dont-call-proptypes ' + 'for details.'
+            );
+            manualPropTypeCallCache[cacheKey] = true;
+            manualPropTypeWarningCount++;
+          }
+        }
+      }
+      if (props[propName] == null) {
+        if (isRequired) {
+          if (props[propName] === null) {
+            return new PropTypeError('The ' + location + ' `' + propFullName + '` is marked as required ' + ('in `' + componentName + '`, but its value is `null`.'));
+          }
+          return new PropTypeError('The ' + location + ' `' + propFullName + '` is marked as required in ' + ('`' + componentName + '`, but its value is `undefined`.'));
+        }
+        return null;
+      } else {
+        return validate(props, propName, componentName, location, propFullName);
+      }
+    }
+
+    var chainedCheckType = checkType.bind(null, false);
+    chainedCheckType.isRequired = checkType.bind(null, true);
+
+    return chainedCheckType;
+  }
+
+  function createPrimitiveTypeChecker(expectedType) {
+    function validate(props, propName, componentName, location, propFullName, secret) {
+      var propValue = props[propName];
+      var propType = getPropType(propValue);
+      if (propType !== expectedType) {
+        // `propValue` being instance of, say, date/regexp, pass the 'object'
+        // check, but we can offer a more precise error message here rather than
+        // 'of type `object`'.
+        var preciseType = getPreciseType(propValue);
+
+        return new PropTypeError(
+          'Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + preciseType + '` supplied to `' + componentName + '`, expected ') + ('`' + expectedType + '`.'),
+          {expectedType: expectedType}
+        );
+      }
+      return null;
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createAnyTypeChecker() {
+    return createChainableTypeChecker(emptyFunctionThatReturnsNull);
+  }
+
+  function createArrayOfTypeChecker(typeChecker) {
+    function validate(props, propName, componentName, location, propFullName) {
+      if (typeof typeChecker !== 'function') {
+        return new PropTypeError('Property `' + propFullName + '` of component `' + componentName + '` has invalid PropType notation inside arrayOf.');
+      }
+      var propValue = props[propName];
+      if (!Array.isArray(propValue)) {
+        var propType = getPropType(propValue);
+        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected an array.'));
+      }
+      for (var i = 0; i < propValue.length; i++) {
+        var error = typeChecker(propValue, i, componentName, location, propFullName + '[' + i + ']', ReactPropTypesSecret);
+        if (error instanceof Error) {
+          return error;
+        }
+      }
+      return null;
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createElementTypeChecker() {
+    function validate(props, propName, componentName, location, propFullName) {
+      var propValue = props[propName];
+      if (!isValidElement(propValue)) {
+        var propType = getPropType(propValue);
+        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected a single ReactElement.'));
+      }
+      return null;
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createElementTypeTypeChecker() {
+    function validate(props, propName, componentName, location, propFullName) {
+      var propValue = props[propName];
+      if (!ReactIs.isValidElementType(propValue)) {
+        var propType = getPropType(propValue);
+        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected a single ReactElement type.'));
+      }
+      return null;
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createInstanceTypeChecker(expectedClass) {
+    function validate(props, propName, componentName, location, propFullName) {
+      if (!(props[propName] instanceof expectedClass)) {
+        var expectedClassName = expectedClass.name || ANONYMOUS;
+        var actualClassName = getClassName(props[propName]);
+        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + actualClassName + '` supplied to `' + componentName + '`, expected ') + ('instance of `' + expectedClassName + '`.'));
+      }
+      return null;
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createEnumTypeChecker(expectedValues) {
+    if (!Array.isArray(expectedValues)) {
+      if ("development" !== 'production') {
+        if (arguments.length > 1) {
+          printWarning(
+            'Invalid arguments supplied to oneOf, expected an array, got ' + arguments.length + ' arguments. ' +
+            'A common mistake is to write oneOf(x, y, z) instead of oneOf([x, y, z]).'
+          );
+        } else {
+          printWarning('Invalid argument supplied to oneOf, expected an array.');
+        }
+      }
+      return emptyFunctionThatReturnsNull;
+    }
+
+    function validate(props, propName, componentName, location, propFullName) {
+      var propValue = props[propName];
+      for (var i = 0; i < expectedValues.length; i++) {
+        if (is(propValue, expectedValues[i])) {
+          return null;
+        }
+      }
+
+      var valuesString = JSON.stringify(expectedValues, function replacer(key, value) {
+        var type = getPreciseType(value);
+        if (type === 'symbol') {
+          return String(value);
+        }
+        return value;
+      });
+      return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of value `' + String(propValue) + '` ' + ('supplied to `' + componentName + '`, expected one of ' + valuesString + '.'));
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createObjectOfTypeChecker(typeChecker) {
+    function validate(props, propName, componentName, location, propFullName) {
+      if (typeof typeChecker !== 'function') {
+        return new PropTypeError('Property `' + propFullName + '` of component `' + componentName + '` has invalid PropType notation inside objectOf.');
+      }
+      var propValue = props[propName];
+      var propType = getPropType(propValue);
+      if (propType !== 'object') {
+        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type ' + ('`' + propType + '` supplied to `' + componentName + '`, expected an object.'));
+      }
+      for (var key in propValue) {
+        if (has(propValue, key)) {
+          var error = typeChecker(propValue, key, componentName, location, propFullName + '.' + key, ReactPropTypesSecret);
+          if (error instanceof Error) {
+            return error;
+          }
+        }
+      }
+      return null;
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createUnionTypeChecker(arrayOfTypeCheckers) {
+    if (!Array.isArray(arrayOfTypeCheckers)) {
+      "development" !== 'production' ? printWarning('Invalid argument supplied to oneOfType, expected an instance of array.') : void 0;
+      return emptyFunctionThatReturnsNull;
+    }
+
+    for (var i = 0; i < arrayOfTypeCheckers.length; i++) {
+      var checker = arrayOfTypeCheckers[i];
+      if (typeof checker !== 'function') {
+        printWarning(
+          'Invalid argument supplied to oneOfType. Expected an array of check functions, but ' +
+          'received ' + getPostfixForTypeWarning(checker) + ' at index ' + i + '.'
+        );
+        return emptyFunctionThatReturnsNull;
+      }
+    }
+
+    function validate(props, propName, componentName, location, propFullName) {
+      var expectedTypes = [];
+      for (var i = 0; i < arrayOfTypeCheckers.length; i++) {
+        var checker = arrayOfTypeCheckers[i];
+        var checkerResult = checker(props, propName, componentName, location, propFullName, ReactPropTypesSecret);
+        if (checkerResult == null) {
+          return null;
+        }
+        if (checkerResult.data.hasOwnProperty('expectedType')) {
+          expectedTypes.push(checkerResult.data.expectedType);
+        }
+      }
+      var expectedTypesMessage = (expectedTypes.length > 0) ? ', expected one of type [' + expectedTypes.join(', ') + ']': '';
+      return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` supplied to ' + ('`' + componentName + '`' + expectedTypesMessage + '.'));
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createNodeChecker() {
+    function validate(props, propName, componentName, location, propFullName) {
+      if (!isNode(props[propName])) {
+        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` supplied to ' + ('`' + componentName + '`, expected a ReactNode.'));
+      }
+      return null;
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function invalidValidatorError(componentName, location, propFullName, key, type) {
+    return new PropTypeError(
+      (componentName || 'React class') + ': ' + location + ' type `' + propFullName + '.' + key + '` is invalid; ' +
+      'it must be a function, usually from the `prop-types` package, but received `' + type + '`.'
+    );
+  }
+
+  function createShapeTypeChecker(shapeTypes) {
+    function validate(props, propName, componentName, location, propFullName) {
+      var propValue = props[propName];
+      var propType = getPropType(propValue);
+      if (propType !== 'object') {
+        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type `' + propType + '` ' + ('supplied to `' + componentName + '`, expected `object`.'));
+      }
+      for (var key in shapeTypes) {
+        var checker = shapeTypes[key];
+        if (typeof checker !== 'function') {
+          return invalidValidatorError(componentName, location, propFullName, key, getPreciseType(checker));
+        }
+        var error = checker(propValue, key, componentName, location, propFullName + '.' + key, ReactPropTypesSecret);
+        if (error) {
+          return error;
+        }
+      }
+      return null;
+    }
+    return createChainableTypeChecker(validate);
+  }
+
+  function createStrictShapeTypeChecker(shapeTypes) {
+    function validate(props, propName, componentName, location, propFullName) {
+      var propValue = props[propName];
+      var propType = getPropType(propValue);
+      if (propType !== 'object') {
+        return new PropTypeError('Invalid ' + location + ' `' + propFullName + '` of type `' + propType + '` ' + ('supplied to `' + componentName + '`, expected `object`.'));
+      }
+      // We need to check all keys in case some are required but missing from props.
+      var allKeys = assign({}, props[propName], shapeTypes);
+      for (var key in allKeys) {
+        var checker = shapeTypes[key];
+        if (has(shapeTypes, key) && typeof checker !== 'function') {
+          return invalidValidatorError(componentName, location, propFullName, key, getPreciseType(checker));
+        }
+        if (!checker) {
+          return new PropTypeError(
+            'Invalid ' + location + ' `' + propFullName + '` key `' + key + '` supplied to `' + componentName + '`.' +
+            '\nBad object: ' + JSON.stringify(props[propName], null, '  ') +
+            '\nValid keys: ' + JSON.stringify(Object.keys(shapeTypes), null, '  ')
+          );
+        }
+        var error = checker(propValue, key, componentName, location, propFullName + '.' + key, ReactPropTypesSecret);
+        if (error) {
+          return error;
+        }
+      }
+      return null;
+    }
+
+    return createChainableTypeChecker(validate);
+  }
+
+  function isNode(propValue) {
+    switch (typeof propValue) {
+      case 'number':
+      case 'string':
+      case 'undefined':
+        return true;
+      case 'boolean':
+        return !propValue;
+      case 'object':
+        if (Array.isArray(propValue)) {
+          return propValue.every(isNode);
+        }
+        if (propValue === null || isValidElement(propValue)) {
+          return true;
+        }
+
+        var iteratorFn = getIteratorFn(propValue);
+        if (iteratorFn) {
+          var iterator = iteratorFn.call(propValue);
+          var step;
+          if (iteratorFn !== propValue.entries) {
+            while (!(step = iterator.next()).done) {
+              if (!isNode(step.value)) {
+                return false;
+              }
+            }
+          } else {
+            // Iterator will provide entry [k,v] tuples rather than values.
+            while (!(step = iterator.next()).done) {
+              var entry = step.value;
+              if (entry) {
+                if (!isNode(entry[1])) {
+                  return false;
+                }
+              }
+            }
+          }
+        } else {
+          return false;
+        }
+
+        return true;
+      default:
+        return false;
+    }
+  }
+
+  function isSymbol(propType, propValue) {
+    // Native Symbol.
+    if (propType === 'symbol') {
+      return true;
+    }
+
+    // falsy value can't be a Symbol
+    if (!propValue) {
+      return false;
+    }
+
+    // 19.4.3.5 Symbol.prototype[@@toStringTag] === 'Symbol'
+    if (propValue['@@toStringTag'] === 'Symbol') {
+      return true;
+    }
+
+    // Fallback for non-spec compliant Symbols which are polyfilled.
+    if (typeof Symbol === 'function' && propValue instanceof Symbol) {
+      return true;
+    }
+
+    return false;
+  }
+
+  // Equivalent of `typeof` but with special handling for array and regexp.
+  function getPropType(propValue) {
+    var propType = typeof propValue;
+    if (Array.isArray(propValue)) {
+      return 'array';
+    }
+    if (propValue instanceof RegExp) {
+      // Old webkits (at least until Android 4.0) return 'function' rather than
+      // 'object' for typeof a RegExp. We'll normalize this here so that /bla/
+      // passes PropTypes.object.
+      return 'object';
+    }
+    if (isSymbol(propType, propValue)) {
+      return 'symbol';
+    }
+    return propType;
+  }
+
+  // This handles more types than `getPropType`. Only used for error messages.
+  // See `createPrimitiveTypeChecker`.
+  function getPreciseType(propValue) {
+    if (typeof propValue === 'undefined' || propValue === null) {
+      return '' + propValue;
+    }
+    var propType = getPropType(propValue);
+    if (propType === 'object') {
+      if (propValue instanceof Date) {
+        return 'date';
+      } else if (propValue instanceof RegExp) {
+        return 'regexp';
+      }
+    }
+    return propType;
+  }
+
+  // Returns a string that is postfixed to a warning about an invalid type.
+  // For example, "undefined" or "of type array"
+  function getPostfixForTypeWarning(value) {
+    var type = getPreciseType(value);
+    switch (type) {
+      case 'array':
+      case 'object':
+        return 'an ' + type;
+      case 'boolean':
+      case 'date':
+      case 'regexp':
+        return 'a ' + type;
+      default:
+        return type;
+    }
+  }
+
+  // Returns class name of the object, if any.
+  function getClassName(propValue) {
+    if (!propValue.constructor || !propValue.constructor.name) {
+      return ANONYMOUS;
+    }
+    return propValue.constructor.name;
+  }
+
+  ReactPropTypes.checkPropTypes = checkPropTypes;
+  ReactPropTypes.resetWarningCache = checkPropTypes.resetWarningCache;
+  ReactPropTypes.PropTypes = ReactPropTypes;
+
+  return ReactPropTypes;
+};
+
+},{"./checkPropTypes":1,"./lib/ReactPropTypesSecret":5,"./lib/has":6,"object-assign":7,"react-is":11}],4:[function(require,module,exports){
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+if ("development" !== 'production') {
+  var ReactIs = require('react-is');
+
+  // By explicitly using `prop-types` you are opting into new development behavior.
+  // http://fb.me/prop-types-in-prod
+  var throwOnDirectAccess = true;
+  module.exports = require('./factoryWithTypeCheckers')(ReactIs.isElement, throwOnDirectAccess);
+} else {
+  // By explicitly using `prop-types` you are opting into new production behavior.
+  // http://fb.me/prop-types-in-prod
+  module.exports = require('./factoryWithThrowingShims')();
+}
+
+},{"./factoryWithThrowingShims":2,"./factoryWithTypeCheckers":3,"react-is":11}],5:[function(require,module,exports){
+/**
+ * Copyright (c) 2013-present, Facebook, Inc.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+var ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';
+
+module.exports = ReactPropTypesSecret;
+
+},{}],6:[function(require,module,exports){
+module.exports = Function.call.bind(Object.prototype.hasOwnProperty);
+
+},{}],7:[function(require,module,exports){
+/*
+object-assign
+(c) Sindre Sorhus
+@license MIT
+*/
+
+'use strict';
+/* eslint-disable no-unused-vars */
+var getOwnPropertySymbols = Object.getOwnPropertySymbols;
+var hasOwnProperty = Object.prototype.hasOwnProperty;
+var propIsEnumerable = Object.prototype.propertyIsEnumerable;
+
+function toObject(val) {
+	if (val === null || val === undefined) {
+		throw new TypeError('Object.assign cannot be called with null or undefined');
+	}
+
+	return Object(val);
+}
+
+function shouldUseNative() {
+	try {
+		if (!Object.assign) {
+			return false;
+		}
+
+		// Detect buggy property enumeration order in older V8 versions.
+
+		// https://bugs.chromium.org/p/v8/issues/detail?id=4118
+		var test1 = new String('abc');  // eslint-disable-line no-new-wrappers
+		test1[5] = 'de';
+		if (Object.getOwnPropertyNames(test1)[0] === '5') {
+			return false;
+		}
+
+		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
+		var test2 = {};
+		for (var i = 0; i < 10; i++) {
+			test2['_' + String.fromCharCode(i)] = i;
+		}
+		var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
+			return test2[n];
+		});
+		if (order2.join('') !== '0123456789') {
+			return false;
+		}
+
+		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
+		var test3 = {};
+		'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
+			test3[letter] = letter;
+		});
+		if (Object.keys(Object.assign({}, test3)).join('') !==
+				'abcdefghijklmnopqrst') {
+			return false;
+		}
+
+		return true;
+	} catch (err) {
+		// We don't expect any of the above to throw, but better to be safe.
+		return false;
+	}
+}
+
+module.exports = shouldUseNative() ? Object.assign : function (target, source) {
+	var from;
+	var to = toObject(target);
+	var symbols;
+
+	for (var s = 1; s < arguments.length; s++) {
+		from = Object(arguments[s]);
+
+		for (var key in from) {
+			if (hasOwnProperty.call(from, key)) {
+				to[key] = from[key];
+			}
+		}
+
+		if (getOwnPropertySymbols) {
+			symbols = getOwnPropertySymbols(from);
+			for (var i = 0; i < symbols.length; i++) {
+				if (propIsEnumerable.call(from, symbols[i])) {
+					to[symbols[i]] = from[symbols[i]];
+				}
+			}
+		}
+	}
+
+	return to;
+};
+
+},{}],8:[function(require,module,exports){
+// shim for using process in browser
+var process = module.exports = {};
+
+// cached from whatever global is present so that test runners that stub it
+// don't break things.  But we need to wrap it in a try catch in case it is
+// wrapped in strict mode code which doesn't define any globals.  It's inside a
+// function because try/catches deoptimize in certain engines.
+
+var cachedSetTimeout;
+var cachedClearTimeout;
+
+function defaultSetTimout() {
+    throw new Error('setTimeout has not been defined');
+}
+function defaultClearTimeout () {
+    throw new Error('clearTimeout has not been defined');
+}
+(function () {
+    try {
+        if (typeof setTimeout === 'function') {
+            cachedSetTimeout = setTimeout;
+        } else {
+            cachedSetTimeout = defaultSetTimout;
+        }
+    } catch (e) {
+        cachedSetTimeout = defaultSetTimout;
+    }
+    try {
+        if (typeof clearTimeout === 'function') {
+            cachedClearTimeout = clearTimeout;
+        } else {
+            cachedClearTimeout = defaultClearTimeout;
+        }
+    } catch (e) {
+        cachedClearTimeout = defaultClearTimeout;
+    }
+} ())
+function runTimeout(fun) {
+    if (cachedSetTimeout === setTimeout) {
+        //normal enviroments in sane situations
+        return setTimeout(fun, 0);
+    }
+    // if setTimeout wasn't available but was latter defined
+    if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) {
+        cachedSetTimeout = setTimeout;
+        return setTimeout(fun, 0);
+    }
+    try {
+        // when when somebody has screwed with setTimeout but no I.E. maddness
+        return cachedSetTimeout(fun, 0);
+    } catch(e){
+        try {
+            // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally
+            return cachedSetTimeout.call(null, fun, 0);
+        } catch(e){
+            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error
+            return cachedSetTimeout.call(this, fun, 0);
+        }
+    }
+
+
+}
+function runClearTimeout(marker) {
+    if (cachedClearTimeout === clearTimeout) {
+        //normal enviroments in sane situations
+        return clearTimeout(marker);
+    }
+    // if clearTimeout wasn't available but was latter defined
+    if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) {
+        cachedClearTimeout = clearTimeout;
+        return clearTimeout(marker);
+    }
+    try {
+        // when when somebody has screwed with setTimeout but no I.E. maddness
+        return cachedClearTimeout(marker);
+    } catch (e){
+        try {
+            // When we are in I.E. but the script has been evaled so I.E. doesn't  trust the global object when called normally
+            return cachedClearTimeout.call(null, marker);
+        } catch (e){
+            // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error.
+            // Some versions of I.E. have different rules for clearTimeout vs setTimeout
+            return cachedClearTimeout.call(this, marker);
+        }
+    }
+
+
+
+}
+var queue = [];
+var draining = false;
+var currentQueue;
+var queueIndex = -1;
+
+function cleanUpNextTick() {
+    if (!draining || !currentQueue) {
+        return;
+    }
+    draining = false;
+    if (currentQueue.length) {
+        queue = currentQueue.concat(queue);
+    } else {
+        queueIndex = -1;
+    }
+    if (queue.length) {
+        drainQueue();
+    }
+}
+
+function drainQueue() {
+    if (draining) {
+        return;
+    }
+    var timeout = runTimeout(cleanUpNextTick);
+    draining = true;
+
+    var len = queue.length;
+    while(len) {
+        currentQueue = queue;
+        queue = [];
+        while (++queueIndex < len) {
+            if (currentQueue) {
+                currentQueue[queueIndex].run();
+            }
+        }
+        queueIndex = -1;
+        len = queue.length;
+    }
+    currentQueue = null;
+    draining = false;
+    runClearTimeout(timeout);
+}
+
+process.nextTick = function (fun) {
+    var args = new Array(arguments.length - 1);
+    if (arguments.length > 1) {
+        for (var i = 1; i < arguments.length; i++) {
+            args[i - 1] = arguments[i];
+        }
+    }
+    queue.push(new Item(fun, args));
+    if (queue.length === 1 && !draining) {
+        runTimeout(drainQueue);
+    }
+};
+
+// v8 likes predictible objects
+function Item(fun, array) {
+    this.fun = fun;
+    this.array = array;
+}
+Item.prototype.run = function () {
+    this.fun.apply(null, this.array);
+};
+process.title = 'browser';
+process.browser = true;
+process.env = {};
+process.argv = [];
+process.version = ''; // empty string to avoid regexp issues
+process.versions = {};
+
+function noop() {}
+
+process.on = noop;
+process.addListener = noop;
+process.once = noop;
+process.off = noop;
+process.removeListener = noop;
+process.removeAllListeners = noop;
+process.emit = noop;
+process.prependListener = noop;
+process.prependOnceListener = noop;
+
+process.listeners = function (name) { return [] }
+
+process.binding = function (name) {
+    throw new Error('process.binding is not supported');
+};
+
+process.cwd = function () { return '/' };
+process.chdir = function (dir) {
+    throw new Error('process.chdir is not supported');
+};
+process.umask = function() { return 0; };
+
+},{}],9:[function(require,module,exports){
+(function (process){(function (){
+/** @license React v16.13.1
+ * react-is.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+// The Symbol used to tag the ReactElement-like types. If there is no native Symbol
+// nor polyfill, then a plain number is used for performance.
+var hasSymbol = typeof Symbol === 'function' && Symbol.for;
+var REACT_ELEMENT_TYPE = hasSymbol ? Symbol.for('react.element') : 0xeac7;
+var REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca;
+var REACT_FRAGMENT_TYPE = hasSymbol ? Symbol.for('react.fragment') : 0xeacb;
+var REACT_STRICT_MODE_TYPE = hasSymbol ? Symbol.for('react.strict_mode') : 0xeacc;
+var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for('react.profiler') : 0xead2;
+var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for('react.provider') : 0xeacd;
+var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for('react.context') : 0xeace; // TODO: We don't use AsyncMode or ConcurrentMode anymore. They were temporary
+// (unstable) APIs that have been removed. Can we remove the symbols?
+
+var REACT_ASYNC_MODE_TYPE = hasSymbol ? Symbol.for('react.async_mode') : 0xeacf;
+var REACT_CONCURRENT_MODE_TYPE = hasSymbol ? Symbol.for('react.concurrent_mode') : 0xeacf;
+var REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for('react.forward_ref') : 0xead0;
+var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for('react.suspense') : 0xead1;
+var REACT_SUSPENSE_LIST_TYPE = hasSymbol ? Symbol.for('react.suspense_list') : 0xead8;
+var REACT_MEMO_TYPE = hasSymbol ? Symbol.for('react.memo') : 0xead3;
+var REACT_LAZY_TYPE = hasSymbol ? Symbol.for('react.lazy') : 0xead4;
+var REACT_BLOCK_TYPE = hasSymbol ? Symbol.for('react.block') : 0xead9;
+var REACT_FUNDAMENTAL_TYPE = hasSymbol ? Symbol.for('react.fundamental') : 0xead5;
+var REACT_RESPONDER_TYPE = hasSymbol ? Symbol.for('react.responder') : 0xead6;
+var REACT_SCOPE_TYPE = hasSymbol ? Symbol.for('react.scope') : 0xead7;
+
+function isValidElementType(type) {
+  return typeof type === 'string' || typeof type === 'function' || // Note: its typeof might be other than 'symbol' or 'number' if it's a polyfill.
+  type === REACT_FRAGMENT_TYPE || type === REACT_CONCURRENT_MODE_TYPE || type === REACT_PROFILER_TYPE || type === REACT_STRICT_MODE_TYPE || type === REACT_SUSPENSE_TYPE || type === REACT_SUSPENSE_LIST_TYPE || typeof type === 'object' && type !== null && (type.$$typeof === REACT_LAZY_TYPE || type.$$typeof === REACT_MEMO_TYPE || type.$$typeof === REACT_PROVIDER_TYPE || type.$$typeof === REACT_CONTEXT_TYPE || type.$$typeof === REACT_FORWARD_REF_TYPE || type.$$typeof === REACT_FUNDAMENTAL_TYPE || type.$$typeof === REACT_RESPONDER_TYPE || type.$$typeof === REACT_SCOPE_TYPE || type.$$typeof === REACT_BLOCK_TYPE);
+}
+
+function typeOf(object) {
+  if (typeof object === 'object' && object !== null) {
+    var $$typeof = object.$$typeof;
+
+    switch ($$typeof) {
+      case REACT_ELEMENT_TYPE:
+        var type = object.type;
+
+        switch (type) {
+          case REACT_ASYNC_MODE_TYPE:
+          case REACT_CONCURRENT_MODE_TYPE:
+          case REACT_FRAGMENT_TYPE:
+          case REACT_PROFILER_TYPE:
+          case REACT_STRICT_MODE_TYPE:
+          case REACT_SUSPENSE_TYPE:
+            return type;
+
+          default:
+            var $$typeofType = type && type.$$typeof;
+
+            switch ($$typeofType) {
+              case REACT_CONTEXT_TYPE:
+              case REACT_FORWARD_REF_TYPE:
+              case REACT_LAZY_TYPE:
+              case REACT_MEMO_TYPE:
+              case REACT_PROVIDER_TYPE:
+                return $$typeofType;
+
+              default:
+                return $$typeof;
+            }
+
+        }
+
+      case REACT_PORTAL_TYPE:
+        return $$typeof;
+    }
+  }
+
+  return undefined;
+} // AsyncMode is deprecated along with isAsyncMode
+
+var AsyncMode = REACT_ASYNC_MODE_TYPE;
+var ConcurrentMode = REACT_CONCURRENT_MODE_TYPE;
+var ContextConsumer = REACT_CONTEXT_TYPE;
+var ContextProvider = REACT_PROVIDER_TYPE;
+var Element = REACT_ELEMENT_TYPE;
+var ForwardRef = REACT_FORWARD_REF_TYPE;
+var Fragment = REACT_FRAGMENT_TYPE;
+var Lazy = REACT_LAZY_TYPE;
+var Memo = REACT_MEMO_TYPE;
+var Portal = REACT_PORTAL_TYPE;
+var Profiler = REACT_PROFILER_TYPE;
+var StrictMode = REACT_STRICT_MODE_TYPE;
+var Suspense = REACT_SUSPENSE_TYPE;
+var hasWarnedAboutDeprecatedIsAsyncMode = false; // AsyncMode should be deprecated
+
+function isAsyncMode(object) {
+  {
+    if (!hasWarnedAboutDeprecatedIsAsyncMode) {
+      hasWarnedAboutDeprecatedIsAsyncMode = true; // Using console['warn'] to evade Babel and ESLint
+
+      console['warn']('The ReactIs.isAsyncMode() alias has been deprecated, ' + 'and will be removed in React 17+. Update your code to use ' + 'ReactIs.isConcurrentMode() instead. It has the exact same API.');
+    }
+  }
+
+  return isConcurrentMode(object) || typeOf(object) === REACT_ASYNC_MODE_TYPE;
+}
+function isConcurrentMode(object) {
+  return typeOf(object) === REACT_CONCURRENT_MODE_TYPE;
+}
+function isContextConsumer(object) {
+  return typeOf(object) === REACT_CONTEXT_TYPE;
+}
+function isContextProvider(object) {
+  return typeOf(object) === REACT_PROVIDER_TYPE;
+}
+function isElement(object) {
+  return typeof object === 'object' && object !== null && object.$$typeof === REACT_ELEMENT_TYPE;
+}
+function isForwardRef(object) {
+  return typeOf(object) === REACT_FORWARD_REF_TYPE;
+}
+function isFragment(object) {
+  return typeOf(object) === REACT_FRAGMENT_TYPE;
+}
+function isLazy(object) {
+  return typeOf(object) === REACT_LAZY_TYPE;
+}
+function isMemo(object) {
+  return typeOf(object) === REACT_MEMO_TYPE;
+}
+function isPortal(object) {
+  return typeOf(object) === REACT_PORTAL_TYPE;
+}
+function isProfiler(object) {
+  return typeOf(object) === REACT_PROFILER_TYPE;
+}
+function isStrictMode(object) {
+  return typeOf(object) === REACT_STRICT_MODE_TYPE;
+}
+function isSuspense(object) {
+  return typeOf(object) === REACT_SUSPENSE_TYPE;
+}
+
+exports.AsyncMode = AsyncMode;
+exports.ConcurrentMode = ConcurrentMode;
+exports.ContextConsumer = ContextConsumer;
+exports.ContextProvider = ContextProvider;
+exports.Element = Element;
+exports.ForwardRef = ForwardRef;
+exports.Fragment = Fragment;
+exports.Lazy = Lazy;
+exports.Memo = Memo;
+exports.Portal = Portal;
+exports.Profiler = Profiler;
+exports.StrictMode = StrictMode;
+exports.Suspense = Suspense;
+exports.isAsyncMode = isAsyncMode;
+exports.isConcurrentMode = isConcurrentMode;
+exports.isContextConsumer = isContextConsumer;
+exports.isContextProvider = isContextProvider;
+exports.isElement = isElement;
+exports.isForwardRef = isForwardRef;
+exports.isFragment = isFragment;
+exports.isLazy = isLazy;
+exports.isMemo = isMemo;
+exports.isPortal = isPortal;
+exports.isProfiler = isProfiler;
+exports.isStrictMode = isStrictMode;
+exports.isSuspense = isSuspense;
+exports.isValidElementType = isValidElementType;
+exports.typeOf = typeOf;
+  })();
+}
+
+}).call(this)}).call(this,require('_process'))
+},{"_process":8}],10:[function(require,module,exports){
+/** @license React v16.13.1
+ * react-is.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';var b="function"===typeof Symbol&&Symbol.for,c=b?Symbol.for("react.element"):60103,d=b?Symbol.for("react.portal"):60106,e=b?Symbol.for("react.fragment"):60107,f=b?Symbol.for("react.strict_mode"):60108,g=b?Symbol.for("react.profiler"):60114,h=b?Symbol.for("react.provider"):60109,k=b?Symbol.for("react.context"):60110,l=b?Symbol.for("react.async_mode"):60111,m=b?Symbol.for("react.concurrent_mode"):60111,n=b?Symbol.for("react.forward_ref"):60112,p=b?Symbol.for("react.suspense"):60113,q=b?
+Symbol.for("react.suspense_list"):60120,r=b?Symbol.for("react.memo"):60115,t=b?Symbol.for("react.lazy"):60116,v=b?Symbol.for("react.block"):60121,w=b?Symbol.for("react.fundamental"):60117,x=b?Symbol.for("react.responder"):60118,y=b?Symbol.for("react.scope"):60119;
+function z(a){if("object"===typeof a&&null!==a){var u=a.$$typeof;switch(u){case c:switch(a=a.type,a){case l:case m:case e:case g:case f:case p:return a;default:switch(a=a&&a.$$typeof,a){case k:case n:case t:case r:case h:return a;default:return u}}case d:return u}}}function A(a){return z(a)===m}exports.AsyncMode=l;exports.ConcurrentMode=m;exports.ContextConsumer=k;exports.ContextProvider=h;exports.Element=c;exports.ForwardRef=n;exports.Fragment=e;exports.Lazy=t;exports.Memo=r;exports.Portal=d;
+exports.Profiler=g;exports.StrictMode=f;exports.Suspense=p;exports.isAsyncMode=function(a){return A(a)||z(a)===l};exports.isConcurrentMode=A;exports.isContextConsumer=function(a){return z(a)===k};exports.isContextProvider=function(a){return z(a)===h};exports.isElement=function(a){return"object"===typeof a&&null!==a&&a.$$typeof===c};exports.isForwardRef=function(a){return z(a)===n};exports.isFragment=function(a){return z(a)===e};exports.isLazy=function(a){return z(a)===t};
+exports.isMemo=function(a){return z(a)===r};exports.isPortal=function(a){return z(a)===d};exports.isProfiler=function(a){return z(a)===g};exports.isStrictMode=function(a){return z(a)===f};exports.isSuspense=function(a){return z(a)===p};
+exports.isValidElementType=function(a){return"string"===typeof a||"function"===typeof a||a===e||a===m||a===g||a===f||a===p||a===q||"object"===typeof a&&null!==a&&(a.$$typeof===t||a.$$typeof===r||a.$$typeof===h||a.$$typeof===k||a.$$typeof===n||a.$$typeof===w||a.$$typeof===x||a.$$typeof===y||a.$$typeof===v)};exports.typeOf=z;
+
+},{}],11:[function(require,module,exports){
+(function (process){(function (){
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/react-is.production.min.js');
+} else {
+  module.exports = require('./cjs/react-is.development.js');
+}
+
+}).call(this)}).call(this,require('_process'))
+},{"./cjs/react-is.development.js":9,"./cjs/react-is.production.min.js":10,"_process":8}]},{},[4])(4)
+});
diff --git a/igv_component/node_modules/prop-types/prop-types.min.js b/igv_component/node_modules/prop-types/prop-types.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..7a746e122d8a820bed3a2882daa457c7054f1138
--- /dev/null
+++ b/igv_component/node_modules/prop-types/prop-types.min.js
@@ -0,0 +1 @@
+!function(f){"object"==typeof exports&&"undefined"!=typeof module?module.exports=f():"function"==typeof define&&define.amd?define([],f):("undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this).PropTypes=f()}(function(){return function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var p="function"==typeof require&&require;if(!f&&p)return p(i,!0);if(u)return u(i,!0);throw(p=new Error("Cannot find module '"+i+"'")).code="MODULE_NOT_FOUND",p}p=n[i]={exports:{}},e[i][0].call(p.exports,function(r){return o(e[i][1][r]||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}({1:[function(require,module,exports){"use strict";var ReactPropTypesSecret=require(3);function emptyFunction(){}function emptyFunctionWithReset(){}emptyFunctionWithReset.resetWarningCache=emptyFunction,module.exports=function(){function e(e,t,n,r,o,c){if(c!==ReactPropTypesSecret){c=new Error("Calling PropTypes validators directly is not supported by the `prop-types` package. Use PropTypes.checkPropTypes() to call them. Read more at http://fb.me/use-check-prop-types");throw c.name="Invariant Violation",c}}function t(){return e}var n={array:e.isRequired=e,bigint:e,bool:e,func:e,number:e,object:e,string:e,symbol:e,any:e,arrayOf:t,element:e,elementType:e,instanceOf:t,node:e,objectOf:t,oneOf:t,oneOfType:t,shape:t,exact:t,checkPropTypes:emptyFunctionWithReset,resetWarningCache:emptyFunction};return n.PropTypes=n}},{3:3}],2:[function(require,module,exports){module.exports=require(1)()},{1:1}],3:[function(require,module,exports){"use strict";module.exports="SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED"},{}]},{},[2])(2)});
\ No newline at end of file
diff --git a/igv_component/node_modules/react-dom/LICENSE b/igv_component/node_modules/react-dom/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..b96dcb0480a0b0be0727976e5202a1e7b23edc3f
--- /dev/null
+++ b/igv_component/node_modules/react-dom/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) Facebook, Inc. and its affiliates.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/igv_component/node_modules/react-dom/README.md b/igv_component/node_modules/react-dom/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..2652912f9992f6045f44ec7dd3c4b51f60cefbe5
--- /dev/null
+++ b/igv_component/node_modules/react-dom/README.md
@@ -0,0 +1,54 @@
+# `react-dom`
+
+This package serves as the entry point to the DOM and server renderers for React. It is intended to be paired with the generic React package, which is shipped as `react` to npm.
+
+## Installation
+
+```sh
+npm install react react-dom
+```
+
+## Usage
+
+### In the browser
+
+```js
+var React = require('react');
+var ReactDOM = require('react-dom');
+
+class MyComponent extends React.Component {
+  render() {
+    return <div>Hello World</div>;
+  }
+}
+
+ReactDOM.render(<MyComponent />, node);
+```
+
+### On the server
+
+```js
+var React = require('react');
+var ReactDOMServer = require('react-dom/server');
+
+class MyComponent extends React.Component {
+  render() {
+    return <div>Hello World</div>;
+  }
+}
+
+ReactDOMServer.renderToString(<MyComponent />);
+```
+
+## API
+
+### `react-dom`
+
+- `findDOMNode`
+- `render`
+- `unmountComponentAtNode`
+
+### `react-dom/server`
+
+- `renderToString`
+- `renderToStaticMarkup`
diff --git a/igv_component/node_modules/react-dom/build-info.json b/igv_component/node_modules/react-dom/build-info.json
new file mode 100644
index 0000000000000000000000000000000000000000..4094da67d566d1c3d90b17a78d5ec8fc7dff8efe
--- /dev/null
+++ b/igv_component/node_modules/react-dom/build-info.json
@@ -0,0 +1,8 @@
+{
+  "branch": "pull/18344",
+  "buildNumber": "106499",
+  "checksum": "7fe5a2e",
+  "commit": "da834083c",
+  "environment": "ci",
+  "reactVersion": "16.12.0-da834083c"
+}
diff --git a/igv_component/node_modules/react-dom/cjs/react-dom-server.browser.development.js b/igv_component/node_modules/react-dom/cjs/react-dom-server.browser.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..599bc94edb04d281e34e0ea05b7e45c7e3850242
--- /dev/null
+++ b/igv_component/node_modules/react-dom/cjs/react-dom-server.browser.development.js
@@ -0,0 +1,4043 @@
+/** @license React v16.14.0
+ * react-dom-server.browser.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+var React = require('react');
+var _assign = require('object-assign');
+var checkPropTypes = require('prop-types/checkPropTypes');
+
+// Do not require this module directly! Use normal `invariant` calls with
+// template literal strings. The messages will be replaced with error codes
+// during build.
+function formatProdErrorMessage(code) {
+  var url = 'https://reactjs.org/docs/error-decoder.html?invariant=' + code;
+
+  for (var i = 1; i < arguments.length; i++) {
+    url += '&args[]=' + encodeURIComponent(arguments[i]);
+  }
+
+  return "Minified React error #" + code + "; visit " + url + " for the full message or " + 'use the non-minified dev environment for full errors and additional ' + 'helpful warnings.';
+}
+
+var ReactVersion = '16.14.0';
+
+var ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED; // Prevent newer renderers from RTE when used with older react package versions.
+// Current owner and dispatcher used to share the same ref,
+// but PR #14548 split them out to better support the react-debug-tools package.
+
+if (!ReactSharedInternals.hasOwnProperty('ReactCurrentDispatcher')) {
+  ReactSharedInternals.ReactCurrentDispatcher = {
+    current: null
+  };
+}
+
+if (!ReactSharedInternals.hasOwnProperty('ReactCurrentBatchConfig')) {
+  ReactSharedInternals.ReactCurrentBatchConfig = {
+    suspense: null
+  };
+}
+
+// by calls to these methods by a Babel plugin.
+//
+// In PROD (or in packages without access to React internals),
+// they are left as they are instead.
+
+function warn(format) {
+  {
+    for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+      args[_key - 1] = arguments[_key];
+    }
+
+    printWarning('warn', format, args);
+  }
+}
+function error(format) {
+  {
+    for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+      args[_key2 - 1] = arguments[_key2];
+    }
+
+    printWarning('error', format, args);
+  }
+}
+
+function printWarning(level, format, args) {
+  // When changing this logic, you might want to also
+  // update consoleWithStackDev.www.js as well.
+  {
+    var hasExistingStack = args.length > 0 && typeof args[args.length - 1] === 'string' && args[args.length - 1].indexOf('\n    in') === 0;
+
+    if (!hasExistingStack) {
+      var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+      var stack = ReactDebugCurrentFrame.getStackAddendum();
+
+      if (stack !== '') {
+        format += '%s';
+        args = args.concat([stack]);
+      }
+    }
+
+    var argsWithFormat = args.map(function (item) {
+      return '' + item;
+    }); // Careful: RN currently depends on this prefix
+
+    argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it
+    // breaks IE9: https://github.com/facebook/react/issues/13610
+    // eslint-disable-next-line react-internal/no-production-logging
+
+    Function.prototype.apply.call(console[level], console, argsWithFormat);
+
+    try {
+      // --- Welcome to debugging React ---
+      // This error was thrown as a convenience so that you can use this stack
+      // to find the callsite that caused this warning to fire.
+      var argIndex = 0;
+      var message = 'Warning: ' + format.replace(/%s/g, function () {
+        return args[argIndex++];
+      });
+      throw new Error(message);
+    } catch (x) {}
+  }
+}
+
+// The Symbol used to tag the ReactElement-like types. If there is no native Symbol
+// nor polyfill, then a plain number is used for performance.
+var hasSymbol = typeof Symbol === 'function' && Symbol.for;
+var REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca;
+var REACT_FRAGMENT_TYPE = hasSymbol ? Symbol.for('react.fragment') : 0xeacb;
+var REACT_STRICT_MODE_TYPE = hasSymbol ? Symbol.for('react.strict_mode') : 0xeacc;
+var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for('react.profiler') : 0xead2;
+var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for('react.provider') : 0xeacd;
+var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for('react.context') : 0xeace; // TODO: We don't use AsyncMode or ConcurrentMode anymore. They were temporary
+var REACT_CONCURRENT_MODE_TYPE = hasSymbol ? Symbol.for('react.concurrent_mode') : 0xeacf;
+var REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for('react.forward_ref') : 0xead0;
+var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for('react.suspense') : 0xead1;
+var REACT_SUSPENSE_LIST_TYPE = hasSymbol ? Symbol.for('react.suspense_list') : 0xead8;
+var REACT_MEMO_TYPE = hasSymbol ? Symbol.for('react.memo') : 0xead3;
+var REACT_LAZY_TYPE = hasSymbol ? Symbol.for('react.lazy') : 0xead4;
+var REACT_BLOCK_TYPE = hasSymbol ? Symbol.for('react.block') : 0xead9;
+var REACT_FUNDAMENTAL_TYPE = hasSymbol ? Symbol.for('react.fundamental') : 0xead5;
+var REACT_SCOPE_TYPE = hasSymbol ? Symbol.for('react.scope') : 0xead7;
+
+var Uninitialized = -1;
+var Pending = 0;
+var Resolved = 1;
+var Rejected = 2;
+function refineResolvedLazyComponent(lazyComponent) {
+  return lazyComponent._status === Resolved ? lazyComponent._result : null;
+}
+function initializeLazyComponentType(lazyComponent) {
+  if (lazyComponent._status === Uninitialized) {
+    lazyComponent._status = Pending;
+    var ctor = lazyComponent._ctor;
+    var thenable = ctor();
+    lazyComponent._result = thenable;
+    thenable.then(function (moduleObject) {
+      if (lazyComponent._status === Pending) {
+        var defaultExport = moduleObject.default;
+
+        {
+          if (defaultExport === undefined) {
+            error('lazy: Expected the result of a dynamic import() call. ' + 'Instead received: %s\n\nYour code should look like: \n  ' + "const MyComponent = lazy(() => import('./MyComponent'))", moduleObject);
+          }
+        }
+
+        lazyComponent._status = Resolved;
+        lazyComponent._result = defaultExport;
+      }
+    }, function (error) {
+      if (lazyComponent._status === Pending) {
+        lazyComponent._status = Rejected;
+        lazyComponent._result = error;
+      }
+    });
+  }
+}
+
+function getWrappedName(outerType, innerType, wrapperName) {
+  var functionName = innerType.displayName || innerType.name || '';
+  return outerType.displayName || (functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName);
+}
+
+function getComponentName(type) {
+  if (type == null) {
+    // Host root, text node or just invalid type.
+    return null;
+  }
+
+  {
+    if (typeof type.tag === 'number') {
+      error('Received an unexpected object in getComponentName(). ' + 'This is likely a bug in React. Please file an issue.');
+    }
+  }
+
+  if (typeof type === 'function') {
+    return type.displayName || type.name || null;
+  }
+
+  if (typeof type === 'string') {
+    return type;
+  }
+
+  switch (type) {
+    case REACT_FRAGMENT_TYPE:
+      return 'Fragment';
+
+    case REACT_PORTAL_TYPE:
+      return 'Portal';
+
+    case REACT_PROFILER_TYPE:
+      return "Profiler";
+
+    case REACT_STRICT_MODE_TYPE:
+      return 'StrictMode';
+
+    case REACT_SUSPENSE_TYPE:
+      return 'Suspense';
+
+    case REACT_SUSPENSE_LIST_TYPE:
+      return 'SuspenseList';
+  }
+
+  if (typeof type === 'object') {
+    switch (type.$$typeof) {
+      case REACT_CONTEXT_TYPE:
+        return 'Context.Consumer';
+
+      case REACT_PROVIDER_TYPE:
+        return 'Context.Provider';
+
+      case REACT_FORWARD_REF_TYPE:
+        return getWrappedName(type, type.render, 'ForwardRef');
+
+      case REACT_MEMO_TYPE:
+        return getComponentName(type.type);
+
+      case REACT_BLOCK_TYPE:
+        return getComponentName(type.render);
+
+      case REACT_LAZY_TYPE:
+        {
+          var thenable = type;
+          var resolvedThenable = refineResolvedLazyComponent(thenable);
+
+          if (resolvedThenable) {
+            return getComponentName(resolvedThenable);
+          }
+
+          break;
+        }
+    }
+  }
+
+  return null;
+}
+
+var BEFORE_SLASH_RE = /^(.*)[\\\/]/;
+function describeComponentFrame (name, source, ownerName) {
+  var sourceInfo = '';
+
+  if (source) {
+    var path = source.fileName;
+    var fileName = path.replace(BEFORE_SLASH_RE, '');
+
+    {
+      // In DEV, include code for a common special case:
+      // prefer "folder/index.js" instead of just "index.js".
+      if (/^index\./.test(fileName)) {
+        var match = path.match(BEFORE_SLASH_RE);
+
+        if (match) {
+          var pathBeforeSlash = match[1];
+
+          if (pathBeforeSlash) {
+            var folderName = pathBeforeSlash.replace(BEFORE_SLASH_RE, '');
+            fileName = folderName + '/' + fileName;
+          }
+        }
+      }
+    }
+
+    sourceInfo = ' (at ' + fileName + ':' + source.lineNumber + ')';
+  } else if (ownerName) {
+    sourceInfo = ' (created by ' + ownerName + ')';
+  }
+
+  return '\n    in ' + (name || 'Unknown') + sourceInfo;
+}
+
+var enableSuspenseServerRenderer = false;
+
+var enableDeprecatedFlareAPI = false; // Experimental Host Component support.
+
+var ReactDebugCurrentFrame;
+var didWarnAboutInvalidateContextType;
+
+{
+  ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+  didWarnAboutInvalidateContextType = new Set();
+}
+
+var emptyObject = {};
+
+{
+  Object.freeze(emptyObject);
+}
+
+function maskContext(type, context) {
+  var contextTypes = type.contextTypes;
+
+  if (!contextTypes) {
+    return emptyObject;
+  }
+
+  var maskedContext = {};
+
+  for (var contextName in contextTypes) {
+    maskedContext[contextName] = context[contextName];
+  }
+
+  return maskedContext;
+}
+
+function checkContextTypes(typeSpecs, values, location) {
+  {
+    checkPropTypes(typeSpecs, values, location, 'Component', ReactDebugCurrentFrame.getCurrentStack);
+  }
+}
+
+function validateContextBounds(context, threadID) {
+  // If we don't have enough slots in this context to store this threadID,
+  // fill it in without leaving any holes to ensure that the VM optimizes
+  // this as non-holey index properties.
+  // (Note: If `react` package is < 16.6, _threadCount is undefined.)
+  for (var i = context._threadCount | 0; i <= threadID; i++) {
+    // We assume that this is the same as the defaultValue which might not be
+    // true if we're rendering inside a secondary renderer but they are
+    // secondary because these use cases are very rare.
+    context[i] = context._currentValue2;
+    context._threadCount = i + 1;
+  }
+}
+function processContext(type, context, threadID, isClass) {
+  if (isClass) {
+    var contextType = type.contextType;
+
+    {
+      if ('contextType' in type) {
+        var isValid = // Allow null for conditional declaration
+        contextType === null || contextType !== undefined && contextType.$$typeof === REACT_CONTEXT_TYPE && contextType._context === undefined; // Not a <Context.Consumer>
+
+        if (!isValid && !didWarnAboutInvalidateContextType.has(type)) {
+          didWarnAboutInvalidateContextType.add(type);
+          var addendum = '';
+
+          if (contextType === undefined) {
+            addendum = ' However, it is set to undefined. ' + 'This can be caused by a typo or by mixing up named and default imports. ' + 'This can also happen due to a circular dependency, so ' + 'try moving the createContext() call to a separate file.';
+          } else if (typeof contextType !== 'object') {
+            addendum = ' However, it is set to a ' + typeof contextType + '.';
+          } else if (contextType.$$typeof === REACT_PROVIDER_TYPE) {
+            addendum = ' Did you accidentally pass the Context.Provider instead?';
+          } else if (contextType._context !== undefined) {
+            // <Context.Consumer>
+            addendum = ' Did you accidentally pass the Context.Consumer instead?';
+          } else {
+            addendum = ' However, it is set to an object with keys {' + Object.keys(contextType).join(', ') + '}.';
+          }
+
+          error('%s defines an invalid contextType. ' + 'contextType should point to the Context object returned by React.createContext().%s', getComponentName(type) || 'Component', addendum);
+        }
+      }
+    }
+
+    if (typeof contextType === 'object' && contextType !== null) {
+      validateContextBounds(contextType, threadID);
+      return contextType[threadID];
+    }
+
+    {
+      var maskedContext = maskContext(type, context);
+
+      {
+        if (type.contextTypes) {
+          checkContextTypes(type.contextTypes, maskedContext, 'context');
+        }
+      }
+
+      return maskedContext;
+    }
+  } else {
+    {
+      var _maskedContext = maskContext(type, context);
+
+      {
+        if (type.contextTypes) {
+          checkContextTypes(type.contextTypes, _maskedContext, 'context');
+        }
+      }
+
+      return _maskedContext;
+    }
+  }
+}
+
+var nextAvailableThreadIDs = new Uint16Array(16);
+
+for (var i = 0; i < 15; i++) {
+  nextAvailableThreadIDs[i] = i + 1;
+}
+
+nextAvailableThreadIDs[15] = 0;
+
+function growThreadCountAndReturnNextAvailable() {
+  var oldArray = nextAvailableThreadIDs;
+  var oldSize = oldArray.length;
+  var newSize = oldSize * 2;
+
+  if (!(newSize <= 0x10000)) {
+    {
+      throw Error( "Maximum number of concurrent React renderers exceeded. This can happen if you are not properly destroying the Readable provided by React. Ensure that you call .destroy() on it if you no longer want to read from it, and did not read to the end. If you use .pipe() this should be automatic." );
+    }
+  }
+
+  var newArray = new Uint16Array(newSize);
+  newArray.set(oldArray);
+  nextAvailableThreadIDs = newArray;
+  nextAvailableThreadIDs[0] = oldSize + 1;
+
+  for (var _i = oldSize; _i < newSize - 1; _i++) {
+    nextAvailableThreadIDs[_i] = _i + 1;
+  }
+
+  nextAvailableThreadIDs[newSize - 1] = 0;
+  return oldSize;
+}
+
+function allocThreadID() {
+  var nextID = nextAvailableThreadIDs[0];
+
+  if (nextID === 0) {
+    return growThreadCountAndReturnNextAvailable();
+  }
+
+  nextAvailableThreadIDs[0] = nextAvailableThreadIDs[nextID];
+  return nextID;
+}
+function freeThreadID(id) {
+  nextAvailableThreadIDs[id] = nextAvailableThreadIDs[0];
+  nextAvailableThreadIDs[0] = id;
+}
+
+// A reserved attribute.
+// It is handled by React separately and shouldn't be written to the DOM.
+var RESERVED = 0; // A simple string attribute.
+// Attributes that aren't in the whitelist are presumed to have this type.
+
+var STRING = 1; // A string attribute that accepts booleans in React. In HTML, these are called
+// "enumerated" attributes with "true" and "false" as possible values.
+// When true, it should be set to a "true" string.
+// When false, it should be set to a "false" string.
+
+var BOOLEANISH_STRING = 2; // A real boolean attribute.
+// When true, it should be present (set either to an empty string or its name).
+// When false, it should be omitted.
+
+var BOOLEAN = 3; // An attribute that can be used as a flag as well as with a value.
+// When true, it should be present (set either to an empty string or its name).
+// When false, it should be omitted.
+// For any other value, should be present with that value.
+
+var OVERLOADED_BOOLEAN = 4; // An attribute that must be numeric or parse as a numeric.
+// When falsy, it should be removed.
+
+var NUMERIC = 5; // An attribute that must be positive numeric or parse as a positive numeric.
+// When falsy, it should be removed.
+
+var POSITIVE_NUMERIC = 6;
+
+/* eslint-disable max-len */
+var ATTRIBUTE_NAME_START_CHAR = ":A-Z_a-z\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u02FF\\u0370-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD";
+/* eslint-enable max-len */
+
+var ATTRIBUTE_NAME_CHAR = ATTRIBUTE_NAME_START_CHAR + "\\-.0-9\\u00B7\\u0300-\\u036F\\u203F-\\u2040";
+var ROOT_ATTRIBUTE_NAME = 'data-reactroot';
+var VALID_ATTRIBUTE_NAME_REGEX = new RegExp('^[' + ATTRIBUTE_NAME_START_CHAR + '][' + ATTRIBUTE_NAME_CHAR + ']*$');
+var hasOwnProperty = Object.prototype.hasOwnProperty;
+var illegalAttributeNameCache = {};
+var validatedAttributeNameCache = {};
+function isAttributeNameSafe(attributeName) {
+  if (hasOwnProperty.call(validatedAttributeNameCache, attributeName)) {
+    return true;
+  }
+
+  if (hasOwnProperty.call(illegalAttributeNameCache, attributeName)) {
+    return false;
+  }
+
+  if (VALID_ATTRIBUTE_NAME_REGEX.test(attributeName)) {
+    validatedAttributeNameCache[attributeName] = true;
+    return true;
+  }
+
+  illegalAttributeNameCache[attributeName] = true;
+
+  {
+    error('Invalid attribute name: `%s`', attributeName);
+  }
+
+  return false;
+}
+function shouldIgnoreAttribute(name, propertyInfo, isCustomComponentTag) {
+  if (propertyInfo !== null) {
+    return propertyInfo.type === RESERVED;
+  }
+
+  if (isCustomComponentTag) {
+    return false;
+  }
+
+  if (name.length > 2 && (name[0] === 'o' || name[0] === 'O') && (name[1] === 'n' || name[1] === 'N')) {
+    return true;
+  }
+
+  return false;
+}
+function shouldRemoveAttributeWithWarning(name, value, propertyInfo, isCustomComponentTag) {
+  if (propertyInfo !== null && propertyInfo.type === RESERVED) {
+    return false;
+  }
+
+  switch (typeof value) {
+    case 'function': // $FlowIssue symbol is perfectly valid here
+
+    case 'symbol':
+      // eslint-disable-line
+      return true;
+
+    case 'boolean':
+      {
+        if (isCustomComponentTag) {
+          return false;
+        }
+
+        if (propertyInfo !== null) {
+          return !propertyInfo.acceptsBooleans;
+        } else {
+          var prefix = name.toLowerCase().slice(0, 5);
+          return prefix !== 'data-' && prefix !== 'aria-';
+        }
+      }
+
+    default:
+      return false;
+  }
+}
+function shouldRemoveAttribute(name, value, propertyInfo, isCustomComponentTag) {
+  if (value === null || typeof value === 'undefined') {
+    return true;
+  }
+
+  if (shouldRemoveAttributeWithWarning(name, value, propertyInfo, isCustomComponentTag)) {
+    return true;
+  }
+
+  if (isCustomComponentTag) {
+    return false;
+  }
+
+  if (propertyInfo !== null) {
+    switch (propertyInfo.type) {
+      case BOOLEAN:
+        return !value;
+
+      case OVERLOADED_BOOLEAN:
+        return value === false;
+
+      case NUMERIC:
+        return isNaN(value);
+
+      case POSITIVE_NUMERIC:
+        return isNaN(value) || value < 1;
+    }
+  }
+
+  return false;
+}
+function getPropertyInfo(name) {
+  return properties.hasOwnProperty(name) ? properties[name] : null;
+}
+
+function PropertyInfoRecord(name, type, mustUseProperty, attributeName, attributeNamespace, sanitizeURL) {
+  this.acceptsBooleans = type === BOOLEANISH_STRING || type === BOOLEAN || type === OVERLOADED_BOOLEAN;
+  this.attributeName = attributeName;
+  this.attributeNamespace = attributeNamespace;
+  this.mustUseProperty = mustUseProperty;
+  this.propertyName = name;
+  this.type = type;
+  this.sanitizeURL = sanitizeURL;
+} // When adding attributes to this list, be sure to also add them to
+// the `possibleStandardNames` module to ensure casing and incorrect
+// name warnings.
+
+
+var properties = {}; // These props are reserved by React. They shouldn't be written to the DOM.
+
+var reservedProps = ['children', 'dangerouslySetInnerHTML', // TODO: This prevents the assignment of defaultValue to regular
+// elements (not just inputs). Now that ReactDOMInput assigns to the
+// defaultValue property -- do we need this?
+'defaultValue', 'defaultChecked', 'innerHTML', 'suppressContentEditableWarning', 'suppressHydrationWarning', 'style'];
+
+reservedProps.forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, RESERVED, false, // mustUseProperty
+  name, // attributeName
+  null, // attributeNamespace
+  false);
+}); // A few React string attributes have a different name.
+// This is a mapping from React prop names to the attribute names.
+
+[['acceptCharset', 'accept-charset'], ['className', 'class'], ['htmlFor', 'for'], ['httpEquiv', 'http-equiv']].forEach(function (_ref) {
+  var name = _ref[0],
+      attributeName = _ref[1];
+  properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+  attributeName, // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are "enumerated" HTML attributes that accept "true" and "false".
+// In React, we let users pass `true` and `false` even though technically
+// these aren't boolean attributes (they are coerced to strings).
+
+['contentEditable', 'draggable', 'spellCheck', 'value'].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, BOOLEANISH_STRING, false, // mustUseProperty
+  name.toLowerCase(), // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are "enumerated" SVG attributes that accept "true" and "false".
+// In React, we let users pass `true` and `false` even though technically
+// these aren't boolean attributes (they are coerced to strings).
+// Since these are SVG attributes, their attribute names are case-sensitive.
+
+['autoReverse', 'externalResourcesRequired', 'focusable', 'preserveAlpha'].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, BOOLEANISH_STRING, false, // mustUseProperty
+  name, // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are HTML boolean attributes.
+
+['allowFullScreen', 'async', // Note: there is a special case that prevents it from being written to the DOM
+// on the client side because the browsers are inconsistent. Instead we call focus().
+'autoFocus', 'autoPlay', 'controls', 'default', 'defer', 'disabled', 'disablePictureInPicture', 'formNoValidate', 'hidden', 'loop', 'noModule', 'noValidate', 'open', 'playsInline', 'readOnly', 'required', 'reversed', 'scoped', 'seamless', // Microdata
+'itemScope'].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, BOOLEAN, false, // mustUseProperty
+  name.toLowerCase(), // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are the few React props that we set as DOM properties
+// rather than attributes. These are all booleans.
+
+['checked', // Note: `option.selected` is not updated if `select.multiple` is
+// disabled with `removeAttribute`. We have special logic for handling this.
+'multiple', 'muted', 'selected' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, BOOLEAN, true, // mustUseProperty
+  name, // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are HTML attributes that are "overloaded booleans": they behave like
+// booleans, but can also accept a string value.
+
+['capture', 'download' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, OVERLOADED_BOOLEAN, false, // mustUseProperty
+  name, // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are HTML attributes that must be positive numbers.
+
+['cols', 'rows', 'size', 'span' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, POSITIVE_NUMERIC, false, // mustUseProperty
+  name, // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are HTML attributes that must be numbers.
+
+['rowSpan', 'start'].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, NUMERIC, false, // mustUseProperty
+  name.toLowerCase(), // attributeName
+  null, // attributeNamespace
+  false);
+});
+var CAMELIZE = /[\-\:]([a-z])/g;
+
+var capitalize = function (token) {
+  return token[1].toUpperCase();
+}; // This is a list of all SVG attributes that need special casing, namespacing,
+// or boolean value assignment. Regular attributes that just accept strings
+// and have the same names are omitted, just like in the HTML whitelist.
+// Some of these attributes can be hard to find. This list was created by
+// scraping the MDN documentation.
+
+
+['accent-height', 'alignment-baseline', 'arabic-form', 'baseline-shift', 'cap-height', 'clip-path', 'clip-rule', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'dominant-baseline', 'enable-background', 'fill-opacity', 'fill-rule', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'glyph-name', 'glyph-orientation-horizontal', 'glyph-orientation-vertical', 'horiz-adv-x', 'horiz-origin-x', 'image-rendering', 'letter-spacing', 'lighting-color', 'marker-end', 'marker-mid', 'marker-start', 'overline-position', 'overline-thickness', 'paint-order', 'panose-1', 'pointer-events', 'rendering-intent', 'shape-rendering', 'stop-color', 'stop-opacity', 'strikethrough-position', 'strikethrough-thickness', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'text-anchor', 'text-decoration', 'text-rendering', 'underline-position', 'underline-thickness', 'unicode-bidi', 'unicode-range', 'units-per-em', 'v-alphabetic', 'v-hanging', 'v-ideographic', 'v-mathematical', 'vector-effect', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'word-spacing', 'writing-mode', 'xmlns:xlink', 'x-height' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (attributeName) {
+  var name = attributeName.replace(CAMELIZE, capitalize);
+  properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+  attributeName, null, // attributeNamespace
+  false);
+}); // String SVG attributes with the xlink namespace.
+
+['xlink:actuate', 'xlink:arcrole', 'xlink:role', 'xlink:show', 'xlink:title', 'xlink:type' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (attributeName) {
+  var name = attributeName.replace(CAMELIZE, capitalize);
+  properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+  attributeName, 'http://www.w3.org/1999/xlink', false);
+}); // String SVG attributes with the xml namespace.
+
+['xml:base', 'xml:lang', 'xml:space' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (attributeName) {
+  var name = attributeName.replace(CAMELIZE, capitalize);
+  properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+  attributeName, 'http://www.w3.org/XML/1998/namespace', false);
+}); // These attribute exists both in HTML and SVG.
+// The attribute name is case-sensitive in SVG so we can't just use
+// the React name like we do for attributes that exist only in HTML.
+
+['tabIndex', 'crossOrigin'].forEach(function (attributeName) {
+  properties[attributeName] = new PropertyInfoRecord(attributeName, STRING, false, // mustUseProperty
+  attributeName.toLowerCase(), // attributeName
+  null, // attributeNamespace
+  false);
+}); // These attributes accept URLs. These must not allow javascript: URLS.
+// These will also need to accept Trusted Types object in the future.
+
+var xlinkHref = 'xlinkHref';
+properties[xlinkHref] = new PropertyInfoRecord('xlinkHref', STRING, false, // mustUseProperty
+'xlink:href', 'http://www.w3.org/1999/xlink', true);
+['src', 'href', 'action', 'formAction'].forEach(function (attributeName) {
+  properties[attributeName] = new PropertyInfoRecord(attributeName, STRING, false, // mustUseProperty
+  attributeName.toLowerCase(), // attributeName
+  null, // attributeNamespace
+  true);
+});
+
+var ReactDebugCurrentFrame$1 = null;
+
+{
+  ReactDebugCurrentFrame$1 = ReactSharedInternals.ReactDebugCurrentFrame;
+} // A javascript: URL can contain leading C0 control or \u0020 SPACE,
+// and any newline or tab are filtered out as if they're not part of the URL.
+// https://url.spec.whatwg.org/#url-parsing
+// Tab or newline are defined as \r\n\t:
+// https://infra.spec.whatwg.org/#ascii-tab-or-newline
+// A C0 control is a code point in the range \u0000 NULL to \u001F
+// INFORMATION SEPARATOR ONE, inclusive:
+// https://infra.spec.whatwg.org/#c0-control-or-space
+
+/* eslint-disable max-len */
+
+
+var isJavaScriptProtocol = /^[\u0000-\u001F ]*j[\r\n\t]*a[\r\n\t]*v[\r\n\t]*a[\r\n\t]*s[\r\n\t]*c[\r\n\t]*r[\r\n\t]*i[\r\n\t]*p[\r\n\t]*t[\r\n\t]*\:/i;
+var didWarn = false;
+
+function sanitizeURL(url) {
+  {
+    if (!didWarn && isJavaScriptProtocol.test(url)) {
+      didWarn = true;
+
+      error('A future version of React will block javascript: URLs as a security precaution. ' + 'Use event handlers instead if you can. If you need to generate unsafe HTML try ' + 'using dangerouslySetInnerHTML instead. React was passed %s.', JSON.stringify(url));
+    }
+  }
+}
+
+// code copied and modified from escape-html
+
+/**
+ * Module variables.
+ * @private
+ */
+var matchHtmlRegExp = /["'&<>]/;
+/**
+ * Escapes special characters and HTML entities in a given html string.
+ *
+ * @param  {string} string HTML string to escape for later insertion
+ * @return {string}
+ * @public
+ */
+
+function escapeHtml(string) {
+  var str = '' + string;
+  var match = matchHtmlRegExp.exec(str);
+
+  if (!match) {
+    return str;
+  }
+
+  var escape;
+  var html = '';
+  var index;
+  var lastIndex = 0;
+
+  for (index = match.index; index < str.length; index++) {
+    switch (str.charCodeAt(index)) {
+      case 34:
+        // "
+        escape = '&quot;';
+        break;
+
+      case 38:
+        // &
+        escape = '&amp;';
+        break;
+
+      case 39:
+        // '
+        escape = '&#x27;'; // modified from escape-html; used to be '&#39'
+
+        break;
+
+      case 60:
+        // <
+        escape = '&lt;';
+        break;
+
+      case 62:
+        // >
+        escape = '&gt;';
+        break;
+
+      default:
+        continue;
+    }
+
+    if (lastIndex !== index) {
+      html += str.substring(lastIndex, index);
+    }
+
+    lastIndex = index + 1;
+    html += escape;
+  }
+
+  return lastIndex !== index ? html + str.substring(lastIndex, index) : html;
+} // end code copied and modified from escape-html
+
+/**
+ * Escapes text to prevent scripting attacks.
+ *
+ * @param {*} text Text value to escape.
+ * @return {string} An escaped string.
+ */
+
+
+function escapeTextForBrowser(text) {
+  if (typeof text === 'boolean' || typeof text === 'number') {
+    // this shortcircuit helps perf for types that we know will never have
+    // special characters, especially given that this function is used often
+    // for numeric dom ids.
+    return '' + text;
+  }
+
+  return escapeHtml(text);
+}
+
+/**
+ * Escapes attribute value to prevent scripting attacks.
+ *
+ * @param {*} value Value to escape.
+ * @return {string} An escaped string.
+ */
+
+function quoteAttributeValueForBrowser(value) {
+  return '"' + escapeTextForBrowser(value) + '"';
+}
+
+function createMarkupForRoot() {
+  return ROOT_ATTRIBUTE_NAME + '=""';
+}
+/**
+ * Creates markup for a property.
+ *
+ * @param {string} name
+ * @param {*} value
+ * @return {?string} Markup string, or null if the property was invalid.
+ */
+
+function createMarkupForProperty(name, value) {
+  var propertyInfo = getPropertyInfo(name);
+
+  if (name !== 'style' && shouldIgnoreAttribute(name, propertyInfo, false)) {
+    return '';
+  }
+
+  if (shouldRemoveAttribute(name, value, propertyInfo, false)) {
+    return '';
+  }
+
+  if (propertyInfo !== null) {
+    var attributeName = propertyInfo.attributeName;
+    var type = propertyInfo.type;
+
+    if (type === BOOLEAN || type === OVERLOADED_BOOLEAN && value === true) {
+      return attributeName + '=""';
+    } else {
+      if (propertyInfo.sanitizeURL) {
+        value = '' + value;
+        sanitizeURL(value);
+      }
+
+      return attributeName + '=' + quoteAttributeValueForBrowser(value);
+    }
+  } else if (isAttributeNameSafe(name)) {
+    return name + '=' + quoteAttributeValueForBrowser(value);
+  }
+
+  return '';
+}
+/**
+ * Creates markup for a custom property.
+ *
+ * @param {string} name
+ * @param {*} value
+ * @return {string} Markup string, or empty string if the property was invalid.
+ */
+
+function createMarkupForCustomAttribute(name, value) {
+  if (!isAttributeNameSafe(name) || value == null) {
+    return '';
+  }
+
+  return name + '=' + quoteAttributeValueForBrowser(value);
+}
+
+/**
+ * inlined Object.is polyfill to avoid requiring consumers ship their own
+ * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
+ */
+function is(x, y) {
+  return x === y && (x !== 0 || 1 / x === 1 / y) || x !== x && y !== y // eslint-disable-line no-self-compare
+  ;
+}
+
+var objectIs = typeof Object.is === 'function' ? Object.is : is;
+
+var currentlyRenderingComponent = null;
+var firstWorkInProgressHook = null;
+var workInProgressHook = null; // Whether the work-in-progress hook is a re-rendered hook
+
+var isReRender = false; // Whether an update was scheduled during the currently executing render pass.
+
+var didScheduleRenderPhaseUpdate = false; // Lazily created map of render-phase updates
+
+var renderPhaseUpdates = null; // Counter to prevent infinite loops.
+
+var numberOfReRenders = 0;
+var RE_RENDER_LIMIT = 25;
+var isInHookUserCodeInDev = false; // In DEV, this is the name of the currently executing primitive hook
+
+var currentHookNameInDev;
+
+function resolveCurrentlyRenderingComponent() {
+  if (!(currentlyRenderingComponent !== null)) {
+    {
+      throw Error( "Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons:\n1. You might have mismatching versions of React and the renderer (such as React DOM)\n2. You might be breaking the Rules of Hooks\n3. You might have more than one copy of React in the same app\nSee https://fb.me/react-invalid-hook-call for tips about how to debug and fix this problem." );
+    }
+  }
+
+  {
+    if (isInHookUserCodeInDev) {
+      error('Do not call Hooks inside useEffect(...), useMemo(...), or other built-in Hooks. ' + 'You can only call Hooks at the top level of your React function. ' + 'For more information, see ' + 'https://fb.me/rules-of-hooks');
+    }
+  }
+
+  return currentlyRenderingComponent;
+}
+
+function areHookInputsEqual(nextDeps, prevDeps) {
+  if (prevDeps === null) {
+    {
+      error('%s received a final argument during this render, but not during ' + 'the previous render. Even though the final argument is optional, ' + 'its type cannot change between renders.', currentHookNameInDev);
+    }
+
+    return false;
+  }
+
+  {
+    // Don't bother comparing lengths in prod because these arrays should be
+    // passed inline.
+    if (nextDeps.length !== prevDeps.length) {
+      error('The final argument passed to %s changed size between renders. The ' + 'order and size of this array must remain constant.\n\n' + 'Previous: %s\n' + 'Incoming: %s', currentHookNameInDev, "[" + nextDeps.join(', ') + "]", "[" + prevDeps.join(', ') + "]");
+    }
+  }
+
+  for (var i = 0; i < prevDeps.length && i < nextDeps.length; i++) {
+    if (objectIs(nextDeps[i], prevDeps[i])) {
+      continue;
+    }
+
+    return false;
+  }
+
+  return true;
+}
+
+function createHook() {
+  if (numberOfReRenders > 0) {
+    {
+      {
+        throw Error( "Rendered more hooks than during the previous render" );
+      }
+    }
+  }
+
+  return {
+    memoizedState: null,
+    queue: null,
+    next: null
+  };
+}
+
+function createWorkInProgressHook() {
+  if (workInProgressHook === null) {
+    // This is the first hook in the list
+    if (firstWorkInProgressHook === null) {
+      isReRender = false;
+      firstWorkInProgressHook = workInProgressHook = createHook();
+    } else {
+      // There's already a work-in-progress. Reuse it.
+      isReRender = true;
+      workInProgressHook = firstWorkInProgressHook;
+    }
+  } else {
+    if (workInProgressHook.next === null) {
+      isReRender = false; // Append to the end of the list
+
+      workInProgressHook = workInProgressHook.next = createHook();
+    } else {
+      // There's already a work-in-progress. Reuse it.
+      isReRender = true;
+      workInProgressHook = workInProgressHook.next;
+    }
+  }
+
+  return workInProgressHook;
+}
+
+function prepareToUseHooks(componentIdentity) {
+  currentlyRenderingComponent = componentIdentity;
+
+  {
+    isInHookUserCodeInDev = false;
+  } // The following should have already been reset
+  // didScheduleRenderPhaseUpdate = false;
+  // firstWorkInProgressHook = null;
+  // numberOfReRenders = 0;
+  // renderPhaseUpdates = null;
+  // workInProgressHook = null;
+
+}
+function finishHooks(Component, props, children, refOrContext) {
+  // This must be called after every function component to prevent hooks from
+  // being used in classes.
+  while (didScheduleRenderPhaseUpdate) {
+    // Updates were scheduled during the render phase. They are stored in
+    // the `renderPhaseUpdates` map. Call the component again, reusing the
+    // work-in-progress hooks and applying the additional updates on top. Keep
+    // restarting until no more updates are scheduled.
+    didScheduleRenderPhaseUpdate = false;
+    numberOfReRenders += 1; // Start over from the beginning of the list
+
+    workInProgressHook = null;
+    children = Component(props, refOrContext);
+  }
+
+  currentlyRenderingComponent = null;
+  firstWorkInProgressHook = null;
+  numberOfReRenders = 0;
+  renderPhaseUpdates = null;
+  workInProgressHook = null;
+
+  {
+    isInHookUserCodeInDev = false;
+  } // These were reset above
+  // currentlyRenderingComponent = null;
+  // didScheduleRenderPhaseUpdate = false;
+  // firstWorkInProgressHook = null;
+  // numberOfReRenders = 0;
+  // renderPhaseUpdates = null;
+  // workInProgressHook = null;
+
+
+  return children;
+}
+
+function readContext(context, observedBits) {
+  var threadID = currentThreadID;
+  validateContextBounds(context, threadID);
+
+  {
+    if (isInHookUserCodeInDev) {
+      error('Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().');
+    }
+  }
+
+  return context[threadID];
+}
+
+function useContext(context, observedBits) {
+  {
+    currentHookNameInDev = 'useContext';
+  }
+
+  resolveCurrentlyRenderingComponent();
+  var threadID = currentThreadID;
+  validateContextBounds(context, threadID);
+  return context[threadID];
+}
+
+function basicStateReducer(state, action) {
+  // $FlowFixMe: Flow doesn't like mixed types
+  return typeof action === 'function' ? action(state) : action;
+}
+
+function useState(initialState) {
+  {
+    currentHookNameInDev = 'useState';
+  }
+
+  return useReducer(basicStateReducer, // useReducer has a special case to support lazy useState initializers
+  initialState);
+}
+function useReducer(reducer, initialArg, init) {
+  {
+    if (reducer !== basicStateReducer) {
+      currentHookNameInDev = 'useReducer';
+    }
+  }
+
+  currentlyRenderingComponent = resolveCurrentlyRenderingComponent();
+  workInProgressHook = createWorkInProgressHook();
+
+  if (isReRender) {
+    // This is a re-render. Apply the new render phase updates to the previous
+    // current hook.
+    var queue = workInProgressHook.queue;
+    var dispatch = queue.dispatch;
+
+    if (renderPhaseUpdates !== null) {
+      // Render phase updates are stored in a map of queue -> linked list
+      var firstRenderPhaseUpdate = renderPhaseUpdates.get(queue);
+
+      if (firstRenderPhaseUpdate !== undefined) {
+        renderPhaseUpdates.delete(queue);
+        var newState = workInProgressHook.memoizedState;
+        var update = firstRenderPhaseUpdate;
+
+        do {
+          // Process this render phase update. We don't have to check the
+          // priority because it will always be the same as the current
+          // render's.
+          var action = update.action;
+
+          {
+            isInHookUserCodeInDev = true;
+          }
+
+          newState = reducer(newState, action);
+
+          {
+            isInHookUserCodeInDev = false;
+          }
+
+          update = update.next;
+        } while (update !== null);
+
+        workInProgressHook.memoizedState = newState;
+        return [newState, dispatch];
+      }
+    }
+
+    return [workInProgressHook.memoizedState, dispatch];
+  } else {
+    {
+      isInHookUserCodeInDev = true;
+    }
+
+    var initialState;
+
+    if (reducer === basicStateReducer) {
+      // Special case for `useState`.
+      initialState = typeof initialArg === 'function' ? initialArg() : initialArg;
+    } else {
+      initialState = init !== undefined ? init(initialArg) : initialArg;
+    }
+
+    {
+      isInHookUserCodeInDev = false;
+    }
+
+    workInProgressHook.memoizedState = initialState;
+
+    var _queue = workInProgressHook.queue = {
+      last: null,
+      dispatch: null
+    };
+
+    var _dispatch = _queue.dispatch = dispatchAction.bind(null, currentlyRenderingComponent, _queue);
+
+    return [workInProgressHook.memoizedState, _dispatch];
+  }
+}
+
+function useMemo(nextCreate, deps) {
+  currentlyRenderingComponent = resolveCurrentlyRenderingComponent();
+  workInProgressHook = createWorkInProgressHook();
+  var nextDeps = deps === undefined ? null : deps;
+
+  if (workInProgressHook !== null) {
+    var prevState = workInProgressHook.memoizedState;
+
+    if (prevState !== null) {
+      if (nextDeps !== null) {
+        var prevDeps = prevState[1];
+
+        if (areHookInputsEqual(nextDeps, prevDeps)) {
+          return prevState[0];
+        }
+      }
+    }
+  }
+
+  {
+    isInHookUserCodeInDev = true;
+  }
+
+  var nextValue = nextCreate();
+
+  {
+    isInHookUserCodeInDev = false;
+  }
+
+  workInProgressHook.memoizedState = [nextValue, nextDeps];
+  return nextValue;
+}
+
+function useRef(initialValue) {
+  currentlyRenderingComponent = resolveCurrentlyRenderingComponent();
+  workInProgressHook = createWorkInProgressHook();
+  var previousRef = workInProgressHook.memoizedState;
+
+  if (previousRef === null) {
+    var ref = {
+      current: initialValue
+    };
+
+    {
+      Object.seal(ref);
+    }
+
+    workInProgressHook.memoizedState = ref;
+    return ref;
+  } else {
+    return previousRef;
+  }
+}
+
+function useLayoutEffect(create, inputs) {
+  {
+    currentHookNameInDev = 'useLayoutEffect';
+
+    error('useLayoutEffect does nothing on the server, because its effect cannot ' + "be encoded into the server renderer's output format. This will lead " + 'to a mismatch between the initial, non-hydrated UI and the intended ' + 'UI. To avoid this, useLayoutEffect should only be used in ' + 'components that render exclusively on the client. ' + 'See https://fb.me/react-uselayouteffect-ssr for common fixes.');
+  }
+}
+
+function dispatchAction(componentIdentity, queue, action) {
+  if (!(numberOfReRenders < RE_RENDER_LIMIT)) {
+    {
+      throw Error( "Too many re-renders. React limits the number of renders to prevent an infinite loop." );
+    }
+  }
+
+  if (componentIdentity === currentlyRenderingComponent) {
+    // This is a render phase update. Stash it in a lazily-created map of
+    // queue -> linked list of updates. After this render pass, we'll restart
+    // and apply the stashed updates on top of the work-in-progress hook.
+    didScheduleRenderPhaseUpdate = true;
+    var update = {
+      action: action,
+      next: null
+    };
+
+    if (renderPhaseUpdates === null) {
+      renderPhaseUpdates = new Map();
+    }
+
+    var firstRenderPhaseUpdate = renderPhaseUpdates.get(queue);
+
+    if (firstRenderPhaseUpdate === undefined) {
+      renderPhaseUpdates.set(queue, update);
+    } else {
+      // Append the update to the end of the list.
+      var lastRenderPhaseUpdate = firstRenderPhaseUpdate;
+
+      while (lastRenderPhaseUpdate.next !== null) {
+        lastRenderPhaseUpdate = lastRenderPhaseUpdate.next;
+      }
+
+      lastRenderPhaseUpdate.next = update;
+    }
+  }
+}
+
+function useCallback(callback, deps) {
+  // Callbacks are passed as they are in the server environment.
+  return callback;
+}
+
+function useResponder(responder, props) {
+  return {
+    props: props,
+    responder: responder
+  };
+}
+
+function useDeferredValue(value, config) {
+  resolveCurrentlyRenderingComponent();
+  return value;
+}
+
+function useTransition(config) {
+  resolveCurrentlyRenderingComponent();
+
+  var startTransition = function (callback) {
+    callback();
+  };
+
+  return [startTransition, false];
+}
+
+function noop() {}
+
+var currentThreadID = 0;
+function setCurrentThreadID(threadID) {
+  currentThreadID = threadID;
+}
+var Dispatcher = {
+  readContext: readContext,
+  useContext: useContext,
+  useMemo: useMemo,
+  useReducer: useReducer,
+  useRef: useRef,
+  useState: useState,
+  useLayoutEffect: useLayoutEffect,
+  useCallback: useCallback,
+  // useImperativeHandle is not run in the server environment
+  useImperativeHandle: noop,
+  // Effects are not run in the server environment.
+  useEffect: noop,
+  // Debugging effect
+  useDebugValue: noop,
+  useResponder: useResponder,
+  useDeferredValue: useDeferredValue,
+  useTransition: useTransition
+};
+
+var HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';
+var MATH_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';
+var SVG_NAMESPACE = 'http://www.w3.org/2000/svg';
+var Namespaces = {
+  html: HTML_NAMESPACE,
+  mathml: MATH_NAMESPACE,
+  svg: SVG_NAMESPACE
+}; // Assumes there is no parent namespace.
+
+function getIntrinsicNamespace(type) {
+  switch (type) {
+    case 'svg':
+      return SVG_NAMESPACE;
+
+    case 'math':
+      return MATH_NAMESPACE;
+
+    default:
+      return HTML_NAMESPACE;
+  }
+}
+function getChildNamespace(parentNamespace, type) {
+  if (parentNamespace == null || parentNamespace === HTML_NAMESPACE) {
+    // No (or default) parent namespace: potential entry point.
+    return getIntrinsicNamespace(type);
+  }
+
+  if (parentNamespace === SVG_NAMESPACE && type === 'foreignObject') {
+    // We're leaving SVG.
+    return HTML_NAMESPACE;
+  } // By default, pass namespace below.
+
+
+  return parentNamespace;
+}
+
+var ReactDebugCurrentFrame$2 = null;
+var ReactControlledValuePropTypes = {
+  checkPropTypes: null
+};
+
+{
+  ReactDebugCurrentFrame$2 = ReactSharedInternals.ReactDebugCurrentFrame;
+  var hasReadOnlyValue = {
+    button: true,
+    checkbox: true,
+    image: true,
+    hidden: true,
+    radio: true,
+    reset: true,
+    submit: true
+  };
+  var propTypes = {
+    value: function (props, propName, componentName) {
+      if (hasReadOnlyValue[props.type] || props.onChange || props.readOnly || props.disabled || props[propName] == null || enableDeprecatedFlareAPI ) {
+        return null;
+      }
+
+      return new Error('You provided a `value` prop to a form field without an ' + '`onChange` handler. This will render a read-only field. If ' + 'the field should be mutable use `defaultValue`. Otherwise, ' + 'set either `onChange` or `readOnly`.');
+    },
+    checked: function (props, propName, componentName) {
+      if (props.onChange || props.readOnly || props.disabled || props[propName] == null || enableDeprecatedFlareAPI ) {
+        return null;
+      }
+
+      return new Error('You provided a `checked` prop to a form field without an ' + '`onChange` handler. This will render a read-only field. If ' + 'the field should be mutable use `defaultChecked`. Otherwise, ' + 'set either `onChange` or `readOnly`.');
+    }
+  };
+  /**
+   * Provide a linked `value` attribute for controlled forms. You should not use
+   * this outside of the ReactDOM controlled form components.
+   */
+
+  ReactControlledValuePropTypes.checkPropTypes = function (tagName, props) {
+    checkPropTypes(propTypes, props, 'prop', tagName, ReactDebugCurrentFrame$2.getStackAddendum);
+  };
+}
+
+// For HTML, certain tags should omit their close tag. We keep a whitelist for
+// those special-case tags.
+var omittedCloseTags = {
+  area: true,
+  base: true,
+  br: true,
+  col: true,
+  embed: true,
+  hr: true,
+  img: true,
+  input: true,
+  keygen: true,
+  link: true,
+  meta: true,
+  param: true,
+  source: true,
+  track: true,
+  wbr: true // NOTE: menuitem's close tag should be omitted, but that causes problems.
+
+};
+
+// `omittedCloseTags` except that `menuitem` should still have its closing tag.
+
+var voidElementTags = _assign({
+  menuitem: true
+}, omittedCloseTags);
+
+var HTML = '__html';
+var ReactDebugCurrentFrame$3 = null;
+
+{
+  ReactDebugCurrentFrame$3 = ReactSharedInternals.ReactDebugCurrentFrame;
+}
+
+function assertValidProps(tag, props) {
+  if (!props) {
+    return;
+  } // Note the use of `==` which checks for null or undefined.
+
+
+  if (voidElementTags[tag]) {
+    if (!(props.children == null && props.dangerouslySetInnerHTML == null)) {
+      {
+        throw Error( tag + " is a void element tag and must neither have `children` nor use `dangerouslySetInnerHTML`." + ( ReactDebugCurrentFrame$3.getStackAddendum() ) );
+      }
+    }
+  }
+
+  if (props.dangerouslySetInnerHTML != null) {
+    if (!(props.children == null)) {
+      {
+        throw Error( "Can only set one of `children` or `props.dangerouslySetInnerHTML`." );
+      }
+    }
+
+    if (!(typeof props.dangerouslySetInnerHTML === 'object' && HTML in props.dangerouslySetInnerHTML)) {
+      {
+        throw Error( "`props.dangerouslySetInnerHTML` must be in the form `{__html: ...}`. Please visit https://fb.me/react-invariant-dangerously-set-inner-html for more information." );
+      }
+    }
+  }
+
+  {
+    if (!props.suppressContentEditableWarning && props.contentEditable && props.children != null) {
+      error('A component is `contentEditable` and contains `children` managed by ' + 'React. It is now your responsibility to guarantee that none of ' + 'those nodes are unexpectedly modified or duplicated. This is ' + 'probably not intentional.');
+    }
+  }
+
+  if (!(props.style == null || typeof props.style === 'object')) {
+    {
+      throw Error( "The `style` prop expects a mapping from style properties to values, not a string. For example, style={{marginRight: spacing + 'em'}} when using JSX." + ( ReactDebugCurrentFrame$3.getStackAddendum() ) );
+    }
+  }
+}
+
+/**
+ * CSS properties which accept numbers but are not in units of "px".
+ */
+var isUnitlessNumber = {
+  animationIterationCount: true,
+  borderImageOutset: true,
+  borderImageSlice: true,
+  borderImageWidth: true,
+  boxFlex: true,
+  boxFlexGroup: true,
+  boxOrdinalGroup: true,
+  columnCount: true,
+  columns: true,
+  flex: true,
+  flexGrow: true,
+  flexPositive: true,
+  flexShrink: true,
+  flexNegative: true,
+  flexOrder: true,
+  gridArea: true,
+  gridRow: true,
+  gridRowEnd: true,
+  gridRowSpan: true,
+  gridRowStart: true,
+  gridColumn: true,
+  gridColumnEnd: true,
+  gridColumnSpan: true,
+  gridColumnStart: true,
+  fontWeight: true,
+  lineClamp: true,
+  lineHeight: true,
+  opacity: true,
+  order: true,
+  orphans: true,
+  tabSize: true,
+  widows: true,
+  zIndex: true,
+  zoom: true,
+  // SVG-related properties
+  fillOpacity: true,
+  floodOpacity: true,
+  stopOpacity: true,
+  strokeDasharray: true,
+  strokeDashoffset: true,
+  strokeMiterlimit: true,
+  strokeOpacity: true,
+  strokeWidth: true
+};
+/**
+ * @param {string} prefix vendor-specific prefix, eg: Webkit
+ * @param {string} key style name, eg: transitionDuration
+ * @return {string} style name prefixed with `prefix`, properly camelCased, eg:
+ * WebkitTransitionDuration
+ */
+
+function prefixKey(prefix, key) {
+  return prefix + key.charAt(0).toUpperCase() + key.substring(1);
+}
+/**
+ * Support style names that may come passed in prefixed by adding permutations
+ * of vendor prefixes.
+ */
+
+
+var prefixes = ['Webkit', 'ms', 'Moz', 'O']; // Using Object.keys here, or else the vanilla for-in loop makes IE8 go into an
+// infinite loop, because it iterates over the newly added props too.
+
+Object.keys(isUnitlessNumber).forEach(function (prop) {
+  prefixes.forEach(function (prefix) {
+    isUnitlessNumber[prefixKey(prefix, prop)] = isUnitlessNumber[prop];
+  });
+});
+
+/**
+ * Convert a value into the proper css writable value. The style name `name`
+ * should be logical (no hyphens), as specified
+ * in `CSSProperty.isUnitlessNumber`.
+ *
+ * @param {string} name CSS property name such as `topMargin`.
+ * @param {*} value CSS property value such as `10px`.
+ * @return {string} Normalized style value with dimensions applied.
+ */
+
+function dangerousStyleValue(name, value, isCustomProperty) {
+  // Note that we've removed escapeTextForBrowser() calls here since the
+  // whole string will be escaped when the attribute is injected into
+  // the markup. If you provide unsafe user data here they can inject
+  // arbitrary CSS which may be problematic (I couldn't repro this):
+  // https://www.owasp.org/index.php/XSS_Filter_Evasion_Cheat_Sheet
+  // http://www.thespanner.co.uk/2007/11/26/ultimate-xss-css-injection/
+  // This is not an XSS hole but instead a potential CSS injection issue
+  // which has lead to a greater discussion about how we're going to
+  // trust URLs moving forward. See #2115901
+  var isEmpty = value == null || typeof value === 'boolean' || value === '';
+
+  if (isEmpty) {
+    return '';
+  }
+
+  if (!isCustomProperty && typeof value === 'number' && value !== 0 && !(isUnitlessNumber.hasOwnProperty(name) && isUnitlessNumber[name])) {
+    return value + 'px'; // Presumes implicit 'px' suffix for unitless numbers
+  }
+
+  return ('' + value).trim();
+}
+
+var uppercasePattern = /([A-Z])/g;
+var msPattern = /^ms-/;
+/**
+ * Hyphenates a camelcased CSS property name, for example:
+ *
+ *   > hyphenateStyleName('backgroundColor')
+ *   < "background-color"
+ *   > hyphenateStyleName('MozTransition')
+ *   < "-moz-transition"
+ *   > hyphenateStyleName('msTransition')
+ *   < "-ms-transition"
+ *
+ * As Modernizr suggests (http://modernizr.com/docs/#prefixed), an `ms` prefix
+ * is converted to `-ms-`.
+ */
+
+function hyphenateStyleName(name) {
+  return name.replace(uppercasePattern, '-$1').toLowerCase().replace(msPattern, '-ms-');
+}
+
+function isCustomComponent(tagName, props) {
+  if (tagName.indexOf('-') === -1) {
+    return typeof props.is === 'string';
+  }
+
+  switch (tagName) {
+    // These are reserved SVG and MathML elements.
+    // We don't mind this whitelist too much because we expect it to never grow.
+    // The alternative is to track the namespace in a few places which is convoluted.
+    // https://w3c.github.io/webcomponents/spec/custom/#custom-elements-core-concepts
+    case 'annotation-xml':
+    case 'color-profile':
+    case 'font-face':
+    case 'font-face-src':
+    case 'font-face-uri':
+    case 'font-face-format':
+    case 'font-face-name':
+    case 'missing-glyph':
+      return false;
+
+    default:
+      return true;
+  }
+}
+
+var warnValidStyle = function () {};
+
+{
+  // 'msTransform' is correct, but the other prefixes should be capitalized
+  var badVendoredStyleNamePattern = /^(?:webkit|moz|o)[A-Z]/;
+  var msPattern$1 = /^-ms-/;
+  var hyphenPattern = /-(.)/g; // style values shouldn't contain a semicolon
+
+  var badStyleValueWithSemicolonPattern = /;\s*$/;
+  var warnedStyleNames = {};
+  var warnedStyleValues = {};
+  var warnedForNaNValue = false;
+  var warnedForInfinityValue = false;
+
+  var camelize = function (string) {
+    return string.replace(hyphenPattern, function (_, character) {
+      return character.toUpperCase();
+    });
+  };
+
+  var warnHyphenatedStyleName = function (name) {
+    if (warnedStyleNames.hasOwnProperty(name) && warnedStyleNames[name]) {
+      return;
+    }
+
+    warnedStyleNames[name] = true;
+
+    error('Unsupported style property %s. Did you mean %s?', name, // As Andi Smith suggests
+    // (http://www.andismith.com/blog/2012/02/modernizr-prefixed/), an `-ms` prefix
+    // is converted to lowercase `ms`.
+    camelize(name.replace(msPattern$1, 'ms-')));
+  };
+
+  var warnBadVendoredStyleName = function (name) {
+    if (warnedStyleNames.hasOwnProperty(name) && warnedStyleNames[name]) {
+      return;
+    }
+
+    warnedStyleNames[name] = true;
+
+    error('Unsupported vendor-prefixed style property %s. Did you mean %s?', name, name.charAt(0).toUpperCase() + name.slice(1));
+  };
+
+  var warnStyleValueWithSemicolon = function (name, value) {
+    if (warnedStyleValues.hasOwnProperty(value) && warnedStyleValues[value]) {
+      return;
+    }
+
+    warnedStyleValues[value] = true;
+
+    error("Style property values shouldn't contain a semicolon. " + 'Try "%s: %s" instead.', name, value.replace(badStyleValueWithSemicolonPattern, ''));
+  };
+
+  var warnStyleValueIsNaN = function (name, value) {
+    if (warnedForNaNValue) {
+      return;
+    }
+
+    warnedForNaNValue = true;
+
+    error('`NaN` is an invalid value for the `%s` css style property.', name);
+  };
+
+  var warnStyleValueIsInfinity = function (name, value) {
+    if (warnedForInfinityValue) {
+      return;
+    }
+
+    warnedForInfinityValue = true;
+
+    error('`Infinity` is an invalid value for the `%s` css style property.', name);
+  };
+
+  warnValidStyle = function (name, value) {
+    if (name.indexOf('-') > -1) {
+      warnHyphenatedStyleName(name);
+    } else if (badVendoredStyleNamePattern.test(name)) {
+      warnBadVendoredStyleName(name);
+    } else if (badStyleValueWithSemicolonPattern.test(value)) {
+      warnStyleValueWithSemicolon(name, value);
+    }
+
+    if (typeof value === 'number') {
+      if (isNaN(value)) {
+        warnStyleValueIsNaN(name, value);
+      } else if (!isFinite(value)) {
+        warnStyleValueIsInfinity(name, value);
+      }
+    }
+  };
+}
+
+var warnValidStyle$1 = warnValidStyle;
+
+var ariaProperties = {
+  'aria-current': 0,
+  // state
+  'aria-details': 0,
+  'aria-disabled': 0,
+  // state
+  'aria-hidden': 0,
+  // state
+  'aria-invalid': 0,
+  // state
+  'aria-keyshortcuts': 0,
+  'aria-label': 0,
+  'aria-roledescription': 0,
+  // Widget Attributes
+  'aria-autocomplete': 0,
+  'aria-checked': 0,
+  'aria-expanded': 0,
+  'aria-haspopup': 0,
+  'aria-level': 0,
+  'aria-modal': 0,
+  'aria-multiline': 0,
+  'aria-multiselectable': 0,
+  'aria-orientation': 0,
+  'aria-placeholder': 0,
+  'aria-pressed': 0,
+  'aria-readonly': 0,
+  'aria-required': 0,
+  'aria-selected': 0,
+  'aria-sort': 0,
+  'aria-valuemax': 0,
+  'aria-valuemin': 0,
+  'aria-valuenow': 0,
+  'aria-valuetext': 0,
+  // Live Region Attributes
+  'aria-atomic': 0,
+  'aria-busy': 0,
+  'aria-live': 0,
+  'aria-relevant': 0,
+  // Drag-and-Drop Attributes
+  'aria-dropeffect': 0,
+  'aria-grabbed': 0,
+  // Relationship Attributes
+  'aria-activedescendant': 0,
+  'aria-colcount': 0,
+  'aria-colindex': 0,
+  'aria-colspan': 0,
+  'aria-controls': 0,
+  'aria-describedby': 0,
+  'aria-errormessage': 0,
+  'aria-flowto': 0,
+  'aria-labelledby': 0,
+  'aria-owns': 0,
+  'aria-posinset': 0,
+  'aria-rowcount': 0,
+  'aria-rowindex': 0,
+  'aria-rowspan': 0,
+  'aria-setsize': 0
+};
+
+var warnedProperties = {};
+var rARIA = new RegExp('^(aria)-[' + ATTRIBUTE_NAME_CHAR + ']*$');
+var rARIACamel = new RegExp('^(aria)[A-Z][' + ATTRIBUTE_NAME_CHAR + ']*$');
+var hasOwnProperty$1 = Object.prototype.hasOwnProperty;
+
+function validateProperty(tagName, name) {
+  {
+    if (hasOwnProperty$1.call(warnedProperties, name) && warnedProperties[name]) {
+      return true;
+    }
+
+    if (rARIACamel.test(name)) {
+      var ariaName = 'aria-' + name.slice(4).toLowerCase();
+      var correctName = ariaProperties.hasOwnProperty(ariaName) ? ariaName : null; // If this is an aria-* attribute, but is not listed in the known DOM
+      // DOM properties, then it is an invalid aria-* attribute.
+
+      if (correctName == null) {
+        error('Invalid ARIA attribute `%s`. ARIA attributes follow the pattern aria-* and must be lowercase.', name);
+
+        warnedProperties[name] = true;
+        return true;
+      } // aria-* attributes should be lowercase; suggest the lowercase version.
+
+
+      if (name !== correctName) {
+        error('Invalid ARIA attribute `%s`. Did you mean `%s`?', name, correctName);
+
+        warnedProperties[name] = true;
+        return true;
+      }
+    }
+
+    if (rARIA.test(name)) {
+      var lowerCasedName = name.toLowerCase();
+      var standardName = ariaProperties.hasOwnProperty(lowerCasedName) ? lowerCasedName : null; // If this is an aria-* attribute, but is not listed in the known DOM
+      // DOM properties, then it is an invalid aria-* attribute.
+
+      if (standardName == null) {
+        warnedProperties[name] = true;
+        return false;
+      } // aria-* attributes should be lowercase; suggest the lowercase version.
+
+
+      if (name !== standardName) {
+        error('Unknown ARIA attribute `%s`. Did you mean `%s`?', name, standardName);
+
+        warnedProperties[name] = true;
+        return true;
+      }
+    }
+  }
+
+  return true;
+}
+
+function warnInvalidARIAProps(type, props) {
+  {
+    var invalidProps = [];
+
+    for (var key in props) {
+      var isValid = validateProperty(type, key);
+
+      if (!isValid) {
+        invalidProps.push(key);
+      }
+    }
+
+    var unknownPropString = invalidProps.map(function (prop) {
+      return '`' + prop + '`';
+    }).join(', ');
+
+    if (invalidProps.length === 1) {
+      error('Invalid aria prop %s on <%s> tag. ' + 'For details, see https://fb.me/invalid-aria-prop', unknownPropString, type);
+    } else if (invalidProps.length > 1) {
+      error('Invalid aria props %s on <%s> tag. ' + 'For details, see https://fb.me/invalid-aria-prop', unknownPropString, type);
+    }
+  }
+}
+
+function validateProperties(type, props) {
+  if (isCustomComponent(type, props)) {
+    return;
+  }
+
+  warnInvalidARIAProps(type, props);
+}
+
+var didWarnValueNull = false;
+function validateProperties$1(type, props) {
+  {
+    if (type !== 'input' && type !== 'textarea' && type !== 'select') {
+      return;
+    }
+
+    if (props != null && props.value === null && !didWarnValueNull) {
+      didWarnValueNull = true;
+
+      if (type === 'select' && props.multiple) {
+        error('`value` prop on `%s` should not be null. ' + 'Consider using an empty array when `multiple` is set to `true` ' + 'to clear the component or `undefined` for uncontrolled components.', type);
+      } else {
+        error('`value` prop on `%s` should not be null. ' + 'Consider using an empty string to clear the component or `undefined` ' + 'for uncontrolled components.', type);
+      }
+    }
+  }
+}
+
+/**
+ * Mapping from registration name to plugin module
+ */
+
+var registrationNameModules = {};
+/**
+ * Mapping from lowercase registration names to the properly cased version,
+ * used to warn in the case of missing event handlers. Available
+ * only in true.
+ * @type {Object}
+ */
+
+var possibleRegistrationNames =  {} ; // Trust the developer to only use possibleRegistrationNames in true
+
+// When adding attributes to the HTML or SVG whitelist, be sure to
+// also add them to this module to ensure casing and incorrect name
+// warnings.
+var possibleStandardNames = {
+  // HTML
+  accept: 'accept',
+  acceptcharset: 'acceptCharset',
+  'accept-charset': 'acceptCharset',
+  accesskey: 'accessKey',
+  action: 'action',
+  allowfullscreen: 'allowFullScreen',
+  alt: 'alt',
+  as: 'as',
+  async: 'async',
+  autocapitalize: 'autoCapitalize',
+  autocomplete: 'autoComplete',
+  autocorrect: 'autoCorrect',
+  autofocus: 'autoFocus',
+  autoplay: 'autoPlay',
+  autosave: 'autoSave',
+  capture: 'capture',
+  cellpadding: 'cellPadding',
+  cellspacing: 'cellSpacing',
+  challenge: 'challenge',
+  charset: 'charSet',
+  checked: 'checked',
+  children: 'children',
+  cite: 'cite',
+  class: 'className',
+  classid: 'classID',
+  classname: 'className',
+  cols: 'cols',
+  colspan: 'colSpan',
+  content: 'content',
+  contenteditable: 'contentEditable',
+  contextmenu: 'contextMenu',
+  controls: 'controls',
+  controlslist: 'controlsList',
+  coords: 'coords',
+  crossorigin: 'crossOrigin',
+  dangerouslysetinnerhtml: 'dangerouslySetInnerHTML',
+  data: 'data',
+  datetime: 'dateTime',
+  default: 'default',
+  defaultchecked: 'defaultChecked',
+  defaultvalue: 'defaultValue',
+  defer: 'defer',
+  dir: 'dir',
+  disabled: 'disabled',
+  disablepictureinpicture: 'disablePictureInPicture',
+  download: 'download',
+  draggable: 'draggable',
+  enctype: 'encType',
+  for: 'htmlFor',
+  form: 'form',
+  formmethod: 'formMethod',
+  formaction: 'formAction',
+  formenctype: 'formEncType',
+  formnovalidate: 'formNoValidate',
+  formtarget: 'formTarget',
+  frameborder: 'frameBorder',
+  headers: 'headers',
+  height: 'height',
+  hidden: 'hidden',
+  high: 'high',
+  href: 'href',
+  hreflang: 'hrefLang',
+  htmlfor: 'htmlFor',
+  httpequiv: 'httpEquiv',
+  'http-equiv': 'httpEquiv',
+  icon: 'icon',
+  id: 'id',
+  innerhtml: 'innerHTML',
+  inputmode: 'inputMode',
+  integrity: 'integrity',
+  is: 'is',
+  itemid: 'itemID',
+  itemprop: 'itemProp',
+  itemref: 'itemRef',
+  itemscope: 'itemScope',
+  itemtype: 'itemType',
+  keyparams: 'keyParams',
+  keytype: 'keyType',
+  kind: 'kind',
+  label: 'label',
+  lang: 'lang',
+  list: 'list',
+  loop: 'loop',
+  low: 'low',
+  manifest: 'manifest',
+  marginwidth: 'marginWidth',
+  marginheight: 'marginHeight',
+  max: 'max',
+  maxlength: 'maxLength',
+  media: 'media',
+  mediagroup: 'mediaGroup',
+  method: 'method',
+  min: 'min',
+  minlength: 'minLength',
+  multiple: 'multiple',
+  muted: 'muted',
+  name: 'name',
+  nomodule: 'noModule',
+  nonce: 'nonce',
+  novalidate: 'noValidate',
+  open: 'open',
+  optimum: 'optimum',
+  pattern: 'pattern',
+  placeholder: 'placeholder',
+  playsinline: 'playsInline',
+  poster: 'poster',
+  preload: 'preload',
+  profile: 'profile',
+  radiogroup: 'radioGroup',
+  readonly: 'readOnly',
+  referrerpolicy: 'referrerPolicy',
+  rel: 'rel',
+  required: 'required',
+  reversed: 'reversed',
+  role: 'role',
+  rows: 'rows',
+  rowspan: 'rowSpan',
+  sandbox: 'sandbox',
+  scope: 'scope',
+  scoped: 'scoped',
+  scrolling: 'scrolling',
+  seamless: 'seamless',
+  selected: 'selected',
+  shape: 'shape',
+  size: 'size',
+  sizes: 'sizes',
+  span: 'span',
+  spellcheck: 'spellCheck',
+  src: 'src',
+  srcdoc: 'srcDoc',
+  srclang: 'srcLang',
+  srcset: 'srcSet',
+  start: 'start',
+  step: 'step',
+  style: 'style',
+  summary: 'summary',
+  tabindex: 'tabIndex',
+  target: 'target',
+  title: 'title',
+  type: 'type',
+  usemap: 'useMap',
+  value: 'value',
+  width: 'width',
+  wmode: 'wmode',
+  wrap: 'wrap',
+  // SVG
+  about: 'about',
+  accentheight: 'accentHeight',
+  'accent-height': 'accentHeight',
+  accumulate: 'accumulate',
+  additive: 'additive',
+  alignmentbaseline: 'alignmentBaseline',
+  'alignment-baseline': 'alignmentBaseline',
+  allowreorder: 'allowReorder',
+  alphabetic: 'alphabetic',
+  amplitude: 'amplitude',
+  arabicform: 'arabicForm',
+  'arabic-form': 'arabicForm',
+  ascent: 'ascent',
+  attributename: 'attributeName',
+  attributetype: 'attributeType',
+  autoreverse: 'autoReverse',
+  azimuth: 'azimuth',
+  basefrequency: 'baseFrequency',
+  baselineshift: 'baselineShift',
+  'baseline-shift': 'baselineShift',
+  baseprofile: 'baseProfile',
+  bbox: 'bbox',
+  begin: 'begin',
+  bias: 'bias',
+  by: 'by',
+  calcmode: 'calcMode',
+  capheight: 'capHeight',
+  'cap-height': 'capHeight',
+  clip: 'clip',
+  clippath: 'clipPath',
+  'clip-path': 'clipPath',
+  clippathunits: 'clipPathUnits',
+  cliprule: 'clipRule',
+  'clip-rule': 'clipRule',
+  color: 'color',
+  colorinterpolation: 'colorInterpolation',
+  'color-interpolation': 'colorInterpolation',
+  colorinterpolationfilters: 'colorInterpolationFilters',
+  'color-interpolation-filters': 'colorInterpolationFilters',
+  colorprofile: 'colorProfile',
+  'color-profile': 'colorProfile',
+  colorrendering: 'colorRendering',
+  'color-rendering': 'colorRendering',
+  contentscripttype: 'contentScriptType',
+  contentstyletype: 'contentStyleType',
+  cursor: 'cursor',
+  cx: 'cx',
+  cy: 'cy',
+  d: 'd',
+  datatype: 'datatype',
+  decelerate: 'decelerate',
+  descent: 'descent',
+  diffuseconstant: 'diffuseConstant',
+  direction: 'direction',
+  display: 'display',
+  divisor: 'divisor',
+  dominantbaseline: 'dominantBaseline',
+  'dominant-baseline': 'dominantBaseline',
+  dur: 'dur',
+  dx: 'dx',
+  dy: 'dy',
+  edgemode: 'edgeMode',
+  elevation: 'elevation',
+  enablebackground: 'enableBackground',
+  'enable-background': 'enableBackground',
+  end: 'end',
+  exponent: 'exponent',
+  externalresourcesrequired: 'externalResourcesRequired',
+  fill: 'fill',
+  fillopacity: 'fillOpacity',
+  'fill-opacity': 'fillOpacity',
+  fillrule: 'fillRule',
+  'fill-rule': 'fillRule',
+  filter: 'filter',
+  filterres: 'filterRes',
+  filterunits: 'filterUnits',
+  floodopacity: 'floodOpacity',
+  'flood-opacity': 'floodOpacity',
+  floodcolor: 'floodColor',
+  'flood-color': 'floodColor',
+  focusable: 'focusable',
+  fontfamily: 'fontFamily',
+  'font-family': 'fontFamily',
+  fontsize: 'fontSize',
+  'font-size': 'fontSize',
+  fontsizeadjust: 'fontSizeAdjust',
+  'font-size-adjust': 'fontSizeAdjust',
+  fontstretch: 'fontStretch',
+  'font-stretch': 'fontStretch',
+  fontstyle: 'fontStyle',
+  'font-style': 'fontStyle',
+  fontvariant: 'fontVariant',
+  'font-variant': 'fontVariant',
+  fontweight: 'fontWeight',
+  'font-weight': 'fontWeight',
+  format: 'format',
+  from: 'from',
+  fx: 'fx',
+  fy: 'fy',
+  g1: 'g1',
+  g2: 'g2',
+  glyphname: 'glyphName',
+  'glyph-name': 'glyphName',
+  glyphorientationhorizontal: 'glyphOrientationHorizontal',
+  'glyph-orientation-horizontal': 'glyphOrientationHorizontal',
+  glyphorientationvertical: 'glyphOrientationVertical',
+  'glyph-orientation-vertical': 'glyphOrientationVertical',
+  glyphref: 'glyphRef',
+  gradienttransform: 'gradientTransform',
+  gradientunits: 'gradientUnits',
+  hanging: 'hanging',
+  horizadvx: 'horizAdvX',
+  'horiz-adv-x': 'horizAdvX',
+  horizoriginx: 'horizOriginX',
+  'horiz-origin-x': 'horizOriginX',
+  ideographic: 'ideographic',
+  imagerendering: 'imageRendering',
+  'image-rendering': 'imageRendering',
+  in2: 'in2',
+  in: 'in',
+  inlist: 'inlist',
+  intercept: 'intercept',
+  k1: 'k1',
+  k2: 'k2',
+  k3: 'k3',
+  k4: 'k4',
+  k: 'k',
+  kernelmatrix: 'kernelMatrix',
+  kernelunitlength: 'kernelUnitLength',
+  kerning: 'kerning',
+  keypoints: 'keyPoints',
+  keysplines: 'keySplines',
+  keytimes: 'keyTimes',
+  lengthadjust: 'lengthAdjust',
+  letterspacing: 'letterSpacing',
+  'letter-spacing': 'letterSpacing',
+  lightingcolor: 'lightingColor',
+  'lighting-color': 'lightingColor',
+  limitingconeangle: 'limitingConeAngle',
+  local: 'local',
+  markerend: 'markerEnd',
+  'marker-end': 'markerEnd',
+  markerheight: 'markerHeight',
+  markermid: 'markerMid',
+  'marker-mid': 'markerMid',
+  markerstart: 'markerStart',
+  'marker-start': 'markerStart',
+  markerunits: 'markerUnits',
+  markerwidth: 'markerWidth',
+  mask: 'mask',
+  maskcontentunits: 'maskContentUnits',
+  maskunits: 'maskUnits',
+  mathematical: 'mathematical',
+  mode: 'mode',
+  numoctaves: 'numOctaves',
+  offset: 'offset',
+  opacity: 'opacity',
+  operator: 'operator',
+  order: 'order',
+  orient: 'orient',
+  orientation: 'orientation',
+  origin: 'origin',
+  overflow: 'overflow',
+  overlineposition: 'overlinePosition',
+  'overline-position': 'overlinePosition',
+  overlinethickness: 'overlineThickness',
+  'overline-thickness': 'overlineThickness',
+  paintorder: 'paintOrder',
+  'paint-order': 'paintOrder',
+  panose1: 'panose1',
+  'panose-1': 'panose1',
+  pathlength: 'pathLength',
+  patterncontentunits: 'patternContentUnits',
+  patterntransform: 'patternTransform',
+  patternunits: 'patternUnits',
+  pointerevents: 'pointerEvents',
+  'pointer-events': 'pointerEvents',
+  points: 'points',
+  pointsatx: 'pointsAtX',
+  pointsaty: 'pointsAtY',
+  pointsatz: 'pointsAtZ',
+  prefix: 'prefix',
+  preservealpha: 'preserveAlpha',
+  preserveaspectratio: 'preserveAspectRatio',
+  primitiveunits: 'primitiveUnits',
+  property: 'property',
+  r: 'r',
+  radius: 'radius',
+  refx: 'refX',
+  refy: 'refY',
+  renderingintent: 'renderingIntent',
+  'rendering-intent': 'renderingIntent',
+  repeatcount: 'repeatCount',
+  repeatdur: 'repeatDur',
+  requiredextensions: 'requiredExtensions',
+  requiredfeatures: 'requiredFeatures',
+  resource: 'resource',
+  restart: 'restart',
+  result: 'result',
+  results: 'results',
+  rotate: 'rotate',
+  rx: 'rx',
+  ry: 'ry',
+  scale: 'scale',
+  security: 'security',
+  seed: 'seed',
+  shaperendering: 'shapeRendering',
+  'shape-rendering': 'shapeRendering',
+  slope: 'slope',
+  spacing: 'spacing',
+  specularconstant: 'specularConstant',
+  specularexponent: 'specularExponent',
+  speed: 'speed',
+  spreadmethod: 'spreadMethod',
+  startoffset: 'startOffset',
+  stddeviation: 'stdDeviation',
+  stemh: 'stemh',
+  stemv: 'stemv',
+  stitchtiles: 'stitchTiles',
+  stopcolor: 'stopColor',
+  'stop-color': 'stopColor',
+  stopopacity: 'stopOpacity',
+  'stop-opacity': 'stopOpacity',
+  strikethroughposition: 'strikethroughPosition',
+  'strikethrough-position': 'strikethroughPosition',
+  strikethroughthickness: 'strikethroughThickness',
+  'strikethrough-thickness': 'strikethroughThickness',
+  string: 'string',
+  stroke: 'stroke',
+  strokedasharray: 'strokeDasharray',
+  'stroke-dasharray': 'strokeDasharray',
+  strokedashoffset: 'strokeDashoffset',
+  'stroke-dashoffset': 'strokeDashoffset',
+  strokelinecap: 'strokeLinecap',
+  'stroke-linecap': 'strokeLinecap',
+  strokelinejoin: 'strokeLinejoin',
+  'stroke-linejoin': 'strokeLinejoin',
+  strokemiterlimit: 'strokeMiterlimit',
+  'stroke-miterlimit': 'strokeMiterlimit',
+  strokewidth: 'strokeWidth',
+  'stroke-width': 'strokeWidth',
+  strokeopacity: 'strokeOpacity',
+  'stroke-opacity': 'strokeOpacity',
+  suppresscontenteditablewarning: 'suppressContentEditableWarning',
+  suppresshydrationwarning: 'suppressHydrationWarning',
+  surfacescale: 'surfaceScale',
+  systemlanguage: 'systemLanguage',
+  tablevalues: 'tableValues',
+  targetx: 'targetX',
+  targety: 'targetY',
+  textanchor: 'textAnchor',
+  'text-anchor': 'textAnchor',
+  textdecoration: 'textDecoration',
+  'text-decoration': 'textDecoration',
+  textlength: 'textLength',
+  textrendering: 'textRendering',
+  'text-rendering': 'textRendering',
+  to: 'to',
+  transform: 'transform',
+  typeof: 'typeof',
+  u1: 'u1',
+  u2: 'u2',
+  underlineposition: 'underlinePosition',
+  'underline-position': 'underlinePosition',
+  underlinethickness: 'underlineThickness',
+  'underline-thickness': 'underlineThickness',
+  unicode: 'unicode',
+  unicodebidi: 'unicodeBidi',
+  'unicode-bidi': 'unicodeBidi',
+  unicoderange: 'unicodeRange',
+  'unicode-range': 'unicodeRange',
+  unitsperem: 'unitsPerEm',
+  'units-per-em': 'unitsPerEm',
+  unselectable: 'unselectable',
+  valphabetic: 'vAlphabetic',
+  'v-alphabetic': 'vAlphabetic',
+  values: 'values',
+  vectoreffect: 'vectorEffect',
+  'vector-effect': 'vectorEffect',
+  version: 'version',
+  vertadvy: 'vertAdvY',
+  'vert-adv-y': 'vertAdvY',
+  vertoriginx: 'vertOriginX',
+  'vert-origin-x': 'vertOriginX',
+  vertoriginy: 'vertOriginY',
+  'vert-origin-y': 'vertOriginY',
+  vhanging: 'vHanging',
+  'v-hanging': 'vHanging',
+  videographic: 'vIdeographic',
+  'v-ideographic': 'vIdeographic',
+  viewbox: 'viewBox',
+  viewtarget: 'viewTarget',
+  visibility: 'visibility',
+  vmathematical: 'vMathematical',
+  'v-mathematical': 'vMathematical',
+  vocab: 'vocab',
+  widths: 'widths',
+  wordspacing: 'wordSpacing',
+  'word-spacing': 'wordSpacing',
+  writingmode: 'writingMode',
+  'writing-mode': 'writingMode',
+  x1: 'x1',
+  x2: 'x2',
+  x: 'x',
+  xchannelselector: 'xChannelSelector',
+  xheight: 'xHeight',
+  'x-height': 'xHeight',
+  xlinkactuate: 'xlinkActuate',
+  'xlink:actuate': 'xlinkActuate',
+  xlinkarcrole: 'xlinkArcrole',
+  'xlink:arcrole': 'xlinkArcrole',
+  xlinkhref: 'xlinkHref',
+  'xlink:href': 'xlinkHref',
+  xlinkrole: 'xlinkRole',
+  'xlink:role': 'xlinkRole',
+  xlinkshow: 'xlinkShow',
+  'xlink:show': 'xlinkShow',
+  xlinktitle: 'xlinkTitle',
+  'xlink:title': 'xlinkTitle',
+  xlinktype: 'xlinkType',
+  'xlink:type': 'xlinkType',
+  xmlbase: 'xmlBase',
+  'xml:base': 'xmlBase',
+  xmllang: 'xmlLang',
+  'xml:lang': 'xmlLang',
+  xmlns: 'xmlns',
+  'xml:space': 'xmlSpace',
+  xmlnsxlink: 'xmlnsXlink',
+  'xmlns:xlink': 'xmlnsXlink',
+  xmlspace: 'xmlSpace',
+  y1: 'y1',
+  y2: 'y2',
+  y: 'y',
+  ychannelselector: 'yChannelSelector',
+  z: 'z',
+  zoomandpan: 'zoomAndPan'
+};
+
+var validateProperty$1 = function () {};
+
+{
+  var warnedProperties$1 = {};
+  var _hasOwnProperty = Object.prototype.hasOwnProperty;
+  var EVENT_NAME_REGEX = /^on./;
+  var INVALID_EVENT_NAME_REGEX = /^on[^A-Z]/;
+  var rARIA$1 = new RegExp('^(aria)-[' + ATTRIBUTE_NAME_CHAR + ']*$');
+  var rARIACamel$1 = new RegExp('^(aria)[A-Z][' + ATTRIBUTE_NAME_CHAR + ']*$');
+
+  validateProperty$1 = function (tagName, name, value, canUseEventSystem) {
+    if (_hasOwnProperty.call(warnedProperties$1, name) && warnedProperties$1[name]) {
+      return true;
+    }
+
+    var lowerCasedName = name.toLowerCase();
+
+    if (lowerCasedName === 'onfocusin' || lowerCasedName === 'onfocusout') {
+      error('React uses onFocus and onBlur instead of onFocusIn and onFocusOut. ' + 'All React events are normalized to bubble, so onFocusIn and onFocusOut ' + 'are not needed/supported by React.');
+
+      warnedProperties$1[name] = true;
+      return true;
+    } // We can't rely on the event system being injected on the server.
+
+
+    if (canUseEventSystem) {
+      if (registrationNameModules.hasOwnProperty(name)) {
+        return true;
+      }
+
+      var registrationName = possibleRegistrationNames.hasOwnProperty(lowerCasedName) ? possibleRegistrationNames[lowerCasedName] : null;
+
+      if (registrationName != null) {
+        error('Invalid event handler property `%s`. Did you mean `%s`?', name, registrationName);
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+
+      if (EVENT_NAME_REGEX.test(name)) {
+        error('Unknown event handler property `%s`. It will be ignored.', name);
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+    } else if (EVENT_NAME_REGEX.test(name)) {
+      // If no event plugins have been injected, we are in a server environment.
+      // So we can't tell if the event name is correct for sure, but we can filter
+      // out known bad ones like `onclick`. We can't suggest a specific replacement though.
+      if (INVALID_EVENT_NAME_REGEX.test(name)) {
+        error('Invalid event handler property `%s`. ' + 'React events use the camelCase naming convention, for example `onClick`.', name);
+      }
+
+      warnedProperties$1[name] = true;
+      return true;
+    } // Let the ARIA attribute hook validate ARIA attributes
+
+
+    if (rARIA$1.test(name) || rARIACamel$1.test(name)) {
+      return true;
+    }
+
+    if (lowerCasedName === 'innerhtml') {
+      error('Directly setting property `innerHTML` is not permitted. ' + 'For more information, lookup documentation on `dangerouslySetInnerHTML`.');
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    if (lowerCasedName === 'aria') {
+      error('The `aria` attribute is reserved for future use in React. ' + 'Pass individual `aria-` attributes instead.');
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    if (lowerCasedName === 'is' && value !== null && value !== undefined && typeof value !== 'string') {
+      error('Received a `%s` for a string attribute `is`. If this is expected, cast ' + 'the value to a string.', typeof value);
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    if (typeof value === 'number' && isNaN(value)) {
+      error('Received NaN for the `%s` attribute. If this is expected, cast ' + 'the value to a string.', name);
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    var propertyInfo = getPropertyInfo(name);
+    var isReserved = propertyInfo !== null && propertyInfo.type === RESERVED; // Known attributes should match the casing specified in the property config.
+
+    if (possibleStandardNames.hasOwnProperty(lowerCasedName)) {
+      var standardName = possibleStandardNames[lowerCasedName];
+
+      if (standardName !== name) {
+        error('Invalid DOM property `%s`. Did you mean `%s`?', name, standardName);
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+    } else if (!isReserved && name !== lowerCasedName) {
+      // Unknown attributes should have lowercase casing since that's how they
+      // will be cased anyway with server rendering.
+      error('React does not recognize the `%s` prop on a DOM element. If you ' + 'intentionally want it to appear in the DOM as a custom ' + 'attribute, spell it as lowercase `%s` instead. ' + 'If you accidentally passed it from a parent component, remove ' + 'it from the DOM element.', name, lowerCasedName);
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    if (typeof value === 'boolean' && shouldRemoveAttributeWithWarning(name, value, propertyInfo, false)) {
+      if (value) {
+        error('Received `%s` for a non-boolean attribute `%s`.\n\n' + 'If you want to write it to the DOM, pass a string instead: ' + '%s="%s" or %s={value.toString()}.', value, name, name, value, name);
+      } else {
+        error('Received `%s` for a non-boolean attribute `%s`.\n\n' + 'If you want to write it to the DOM, pass a string instead: ' + '%s="%s" or %s={value.toString()}.\n\n' + 'If you used to conditionally omit it with %s={condition && value}, ' + 'pass %s={condition ? value : undefined} instead.', value, name, name, value, name, name, name);
+      }
+
+      warnedProperties$1[name] = true;
+      return true;
+    } // Now that we've validated casing, do not validate
+    // data types for reserved props
+
+
+    if (isReserved) {
+      return true;
+    } // Warn when a known attribute is a bad type
+
+
+    if (shouldRemoveAttributeWithWarning(name, value, propertyInfo, false)) {
+      warnedProperties$1[name] = true;
+      return false;
+    } // Warn when passing the strings 'false' or 'true' into a boolean prop
+
+
+    if ((value === 'false' || value === 'true') && propertyInfo !== null && propertyInfo.type === BOOLEAN) {
+      error('Received the string `%s` for the boolean attribute `%s`. ' + '%s ' + 'Did you mean %s={%s}?', value, name, value === 'false' ? 'The browser will interpret it as a truthy value.' : 'Although this works, it will not work as expected if you pass the string "false".', name, value);
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    return true;
+  };
+}
+
+var warnUnknownProperties = function (type, props, canUseEventSystem) {
+  {
+    var unknownProps = [];
+
+    for (var key in props) {
+      var isValid = validateProperty$1(type, key, props[key], canUseEventSystem);
+
+      if (!isValid) {
+        unknownProps.push(key);
+      }
+    }
+
+    var unknownPropString = unknownProps.map(function (prop) {
+      return '`' + prop + '`';
+    }).join(', ');
+
+    if (unknownProps.length === 1) {
+      error('Invalid value for prop %s on <%s> tag. Either remove it from the element, ' + 'or pass a string or number value to keep it in the DOM. ' + 'For details, see https://fb.me/react-attribute-behavior', unknownPropString, type);
+    } else if (unknownProps.length > 1) {
+      error('Invalid values for props %s on <%s> tag. Either remove them from the element, ' + 'or pass a string or number value to keep them in the DOM. ' + 'For details, see https://fb.me/react-attribute-behavior', unknownPropString, type);
+    }
+  }
+};
+
+function validateProperties$2(type, props, canUseEventSystem) {
+  if (isCustomComponent(type, props)) {
+    return;
+  }
+
+  warnUnknownProperties(type, props, canUseEventSystem);
+}
+
+var toArray = React.Children.toArray; // This is only used in DEV.
+// Each entry is `this.stack` from a currently executing renderer instance.
+// (There may be more than one because ReactDOMServer is reentrant).
+// Each stack is an array of frames which may contain nested stacks of elements.
+
+var currentDebugStacks = [];
+var ReactCurrentDispatcher = ReactSharedInternals.ReactCurrentDispatcher;
+var ReactDebugCurrentFrame$4;
+var prevGetCurrentStackImpl = null;
+
+var getCurrentServerStackImpl = function () {
+  return '';
+};
+
+var describeStackFrame = function (element) {
+  return '';
+};
+
+var validatePropertiesInDevelopment = function (type, props) {};
+
+var pushCurrentDebugStack = function (stack) {};
+
+var pushElementToDebugStack = function (element) {};
+
+var popCurrentDebugStack = function () {};
+
+var hasWarnedAboutUsingContextAsConsumer = false;
+
+{
+  ReactDebugCurrentFrame$4 = ReactSharedInternals.ReactDebugCurrentFrame;
+
+  validatePropertiesInDevelopment = function (type, props) {
+    validateProperties(type, props);
+    validateProperties$1(type, props);
+    validateProperties$2(type, props,
+    /* canUseEventSystem */
+    false);
+  };
+
+  describeStackFrame = function (element) {
+    var source = element._source;
+    var type = element.type;
+    var name = getComponentName(type);
+    var ownerName = null;
+    return describeComponentFrame(name, source, ownerName);
+  };
+
+  pushCurrentDebugStack = function (stack) {
+    currentDebugStacks.push(stack);
+
+    if (currentDebugStacks.length === 1) {
+      // We are entering a server renderer.
+      // Remember the previous (e.g. client) global stack implementation.
+      prevGetCurrentStackImpl = ReactDebugCurrentFrame$4.getCurrentStack;
+      ReactDebugCurrentFrame$4.getCurrentStack = getCurrentServerStackImpl;
+    }
+  };
+
+  pushElementToDebugStack = function (element) {
+    // For the innermost executing ReactDOMServer call,
+    var stack = currentDebugStacks[currentDebugStacks.length - 1]; // Take the innermost executing frame (e.g. <Foo>),
+
+    var frame = stack[stack.length - 1]; // and record that it has one more element associated with it.
+
+    frame.debugElementStack.push(element); // We only need this because we tail-optimize single-element
+    // children and directly handle them in an inner loop instead of
+    // creating separate frames for them.
+  };
+
+  popCurrentDebugStack = function () {
+    currentDebugStacks.pop();
+
+    if (currentDebugStacks.length === 0) {
+      // We are exiting the server renderer.
+      // Restore the previous (e.g. client) global stack implementation.
+      ReactDebugCurrentFrame$4.getCurrentStack = prevGetCurrentStackImpl;
+      prevGetCurrentStackImpl = null;
+    }
+  };
+
+  getCurrentServerStackImpl = function () {
+    if (currentDebugStacks.length === 0) {
+      // Nothing is currently rendering.
+      return '';
+    } // ReactDOMServer is reentrant so there may be multiple calls at the same time.
+    // Take the frames from the innermost call which is the last in the array.
+
+
+    var frames = currentDebugStacks[currentDebugStacks.length - 1];
+    var stack = ''; // Go through every frame in the stack from the innermost one.
+
+    for (var i = frames.length - 1; i >= 0; i--) {
+      var frame = frames[i]; // Every frame might have more than one debug element stack entry associated with it.
+      // This is because single-child nesting doesn't create materialized frames.
+      // Instead it would push them through `pushElementToDebugStack()`.
+
+      var debugElementStack = frame.debugElementStack;
+
+      for (var ii = debugElementStack.length - 1; ii >= 0; ii--) {
+        stack += describeStackFrame(debugElementStack[ii]);
+      }
+    }
+
+    return stack;
+  };
+}
+
+var didWarnDefaultInputValue = false;
+var didWarnDefaultChecked = false;
+var didWarnDefaultSelectValue = false;
+var didWarnDefaultTextareaValue = false;
+var didWarnInvalidOptionChildren = false;
+var didWarnAboutNoopUpdateForComponent = {};
+var didWarnAboutBadClass = {};
+var didWarnAboutModulePatternComponent = {};
+var didWarnAboutDeprecatedWillMount = {};
+var didWarnAboutUndefinedDerivedState = {};
+var didWarnAboutUninitializedState = {};
+var valuePropNames = ['value', 'defaultValue'];
+var newlineEatingTags = {
+  listing: true,
+  pre: true,
+  textarea: true
+}; // We accept any tag to be rendered but since this gets injected into arbitrary
+// HTML, we want to make sure that it's a safe tag.
+// http://www.w3.org/TR/REC-xml/#NT-Name
+
+var VALID_TAG_REGEX = /^[a-zA-Z][a-zA-Z:_\.\-\d]*$/; // Simplified subset
+
+var validatedTagCache = {};
+
+function validateDangerousTag(tag) {
+  if (!validatedTagCache.hasOwnProperty(tag)) {
+    if (!VALID_TAG_REGEX.test(tag)) {
+      {
+        throw Error( "Invalid tag: " + tag );
+      }
+    }
+
+    validatedTagCache[tag] = true;
+  }
+}
+
+var styleNameCache = {};
+
+var processStyleName = function (styleName) {
+  if (styleNameCache.hasOwnProperty(styleName)) {
+    return styleNameCache[styleName];
+  }
+
+  var result = hyphenateStyleName(styleName);
+  styleNameCache[styleName] = result;
+  return result;
+};
+
+function createMarkupForStyles(styles) {
+  var serialized = '';
+  var delimiter = '';
+
+  for (var styleName in styles) {
+    if (!styles.hasOwnProperty(styleName)) {
+      continue;
+    }
+
+    var isCustomProperty = styleName.indexOf('--') === 0;
+    var styleValue = styles[styleName];
+
+    {
+      if (!isCustomProperty) {
+        warnValidStyle$1(styleName, styleValue);
+      }
+    }
+
+    if (styleValue != null) {
+      serialized += delimiter + (isCustomProperty ? styleName : processStyleName(styleName)) + ':';
+      serialized += dangerousStyleValue(styleName, styleValue, isCustomProperty);
+      delimiter = ';';
+    }
+  }
+
+  return serialized || null;
+}
+
+function warnNoop(publicInstance, callerName) {
+  {
+    var _constructor = publicInstance.constructor;
+    var componentName = _constructor && getComponentName(_constructor) || 'ReactClass';
+    var warningKey = componentName + '.' + callerName;
+
+    if (didWarnAboutNoopUpdateForComponent[warningKey]) {
+      return;
+    }
+
+    error('%s(...): Can only update a mounting component. ' + 'This usually means you called %s() outside componentWillMount() on the server. ' + 'This is a no-op.\n\nPlease check the code for the %s component.', callerName, callerName, componentName);
+
+    didWarnAboutNoopUpdateForComponent[warningKey] = true;
+  }
+}
+
+function shouldConstruct(Component) {
+  return Component.prototype && Component.prototype.isReactComponent;
+}
+
+function getNonChildrenInnerMarkup(props) {
+  var innerHTML = props.dangerouslySetInnerHTML;
+
+  if (innerHTML != null) {
+    if (innerHTML.__html != null) {
+      return innerHTML.__html;
+    }
+  } else {
+    var content = props.children;
+
+    if (typeof content === 'string' || typeof content === 'number') {
+      return escapeTextForBrowser(content);
+    }
+  }
+
+  return null;
+}
+
+function flattenTopLevelChildren(children) {
+  if (!React.isValidElement(children)) {
+    return toArray(children);
+  }
+
+  var element = children;
+
+  if (element.type !== REACT_FRAGMENT_TYPE) {
+    return [element];
+  }
+
+  var fragmentChildren = element.props.children;
+
+  if (!React.isValidElement(fragmentChildren)) {
+    return toArray(fragmentChildren);
+  }
+
+  var fragmentChildElement = fragmentChildren;
+  return [fragmentChildElement];
+}
+
+function flattenOptionChildren(children) {
+  if (children === undefined || children === null) {
+    return children;
+  }
+
+  var content = ''; // Flatten children and warn if they aren't strings or numbers;
+  // invalid types are ignored.
+
+  React.Children.forEach(children, function (child) {
+    if (child == null) {
+      return;
+    }
+
+    content += child;
+
+    {
+      if (!didWarnInvalidOptionChildren && typeof child !== 'string' && typeof child !== 'number') {
+        didWarnInvalidOptionChildren = true;
+
+        error('Only strings and numbers are supported as <option> children.');
+      }
+    }
+  });
+  return content;
+}
+
+var hasOwnProperty$2 = Object.prototype.hasOwnProperty;
+var STYLE = 'style';
+var RESERVED_PROPS = {
+  children: null,
+  dangerouslySetInnerHTML: null,
+  suppressContentEditableWarning: null,
+  suppressHydrationWarning: null
+};
+
+function createOpenTagMarkup(tagVerbatim, tagLowercase, props, namespace, makeStaticMarkup, isRootElement) {
+  var ret = '<' + tagVerbatim;
+
+  for (var propKey in props) {
+    if (!hasOwnProperty$2.call(props, propKey)) {
+      continue;
+    }
+
+    var propValue = props[propKey];
+
+    if (propValue == null) {
+      continue;
+    }
+
+    if (propKey === STYLE) {
+      propValue = createMarkupForStyles(propValue);
+    }
+
+    var markup = null;
+
+    if (isCustomComponent(tagLowercase, props)) {
+      if (!RESERVED_PROPS.hasOwnProperty(propKey)) {
+        markup = createMarkupForCustomAttribute(propKey, propValue);
+      }
+    } else {
+      markup = createMarkupForProperty(propKey, propValue);
+    }
+
+    if (markup) {
+      ret += ' ' + markup;
+    }
+  } // For static pages, no need to put React ID and checksum. Saves lots of
+  // bytes.
+
+
+  if (makeStaticMarkup) {
+    return ret;
+  }
+
+  if (isRootElement) {
+    ret += ' ' + createMarkupForRoot();
+  }
+
+  return ret;
+}
+
+function validateRenderResult(child, type) {
+  if (child === undefined) {
+    {
+      {
+        throw Error( (getComponentName(type) || 'Component') + "(...): Nothing was returned from render. This usually means a return statement is missing. Or, to render nothing, return null." );
+      }
+    }
+  }
+}
+
+function resolve(child, context, threadID) {
+  while (React.isValidElement(child)) {
+    // Safe because we just checked it's an element.
+    var element = child;
+    var Component = element.type;
+
+    {
+      pushElementToDebugStack(element);
+    }
+
+    if (typeof Component !== 'function') {
+      break;
+    }
+
+    processChild(element, Component);
+  } // Extra closure so queue and replace can be captured properly
+
+
+  function processChild(element, Component) {
+    var isClass = shouldConstruct(Component);
+    var publicContext = processContext(Component, context, threadID, isClass);
+    var queue = [];
+    var replace = false;
+    var updater = {
+      isMounted: function (publicInstance) {
+        return false;
+      },
+      enqueueForceUpdate: function (publicInstance) {
+        if (queue === null) {
+          warnNoop(publicInstance, 'forceUpdate');
+          return null;
+        }
+      },
+      enqueueReplaceState: function (publicInstance, completeState) {
+        replace = true;
+        queue = [completeState];
+      },
+      enqueueSetState: function (publicInstance, currentPartialState) {
+        if (queue === null) {
+          warnNoop(publicInstance, 'setState');
+          return null;
+        }
+
+        queue.push(currentPartialState);
+      }
+    };
+    var inst;
+
+    if (isClass) {
+      inst = new Component(element.props, publicContext, updater);
+
+      if (typeof Component.getDerivedStateFromProps === 'function') {
+        {
+          if (inst.state === null || inst.state === undefined) {
+            var componentName = getComponentName(Component) || 'Unknown';
+
+            if (!didWarnAboutUninitializedState[componentName]) {
+              error('`%s` uses `getDerivedStateFromProps` but its initial state is ' + '%s. This is not recommended. Instead, define the initial state by ' + 'assigning an object to `this.state` in the constructor of `%s`. ' + 'This ensures that `getDerivedStateFromProps` arguments have a consistent shape.', componentName, inst.state === null ? 'null' : 'undefined', componentName);
+
+              didWarnAboutUninitializedState[componentName] = true;
+            }
+          }
+        }
+
+        var partialState = Component.getDerivedStateFromProps.call(null, element.props, inst.state);
+
+        {
+          if (partialState === undefined) {
+            var _componentName = getComponentName(Component) || 'Unknown';
+
+            if (!didWarnAboutUndefinedDerivedState[_componentName]) {
+              error('%s.getDerivedStateFromProps(): A valid state object (or null) must be returned. ' + 'You have returned undefined.', _componentName);
+
+              didWarnAboutUndefinedDerivedState[_componentName] = true;
+            }
+          }
+        }
+
+        if (partialState != null) {
+          inst.state = _assign({}, inst.state, partialState);
+        }
+      }
+    } else {
+      {
+        if (Component.prototype && typeof Component.prototype.render === 'function') {
+          var _componentName2 = getComponentName(Component) || 'Unknown';
+
+          if (!didWarnAboutBadClass[_componentName2]) {
+            error("The <%s /> component appears to have a render method, but doesn't extend React.Component. " + 'This is likely to cause errors. Change %s to extend React.Component instead.', _componentName2, _componentName2);
+
+            didWarnAboutBadClass[_componentName2] = true;
+          }
+        }
+      }
+
+      var componentIdentity = {};
+      prepareToUseHooks(componentIdentity);
+      inst = Component(element.props, publicContext, updater);
+      inst = finishHooks(Component, element.props, inst, publicContext);
+
+      if (inst == null || inst.render == null) {
+        child = inst;
+        validateRenderResult(child, Component);
+        return;
+      }
+
+      {
+        var _componentName3 = getComponentName(Component) || 'Unknown';
+
+        if (!didWarnAboutModulePatternComponent[_componentName3]) {
+          error('The <%s /> component appears to be a function component that returns a class instance. ' + 'Change %s to a class that extends React.Component instead. ' + "If you can't use a class try assigning the prototype on the function as a workaround. " + "`%s.prototype = React.Component.prototype`. Don't use an arrow function since it " + 'cannot be called with `new` by React.', _componentName3, _componentName3, _componentName3);
+
+          didWarnAboutModulePatternComponent[_componentName3] = true;
+        }
+      }
+    }
+
+    inst.props = element.props;
+    inst.context = publicContext;
+    inst.updater = updater;
+    var initialState = inst.state;
+
+    if (initialState === undefined) {
+      inst.state = initialState = null;
+    }
+
+    if (typeof inst.UNSAFE_componentWillMount === 'function' || typeof inst.componentWillMount === 'function') {
+      if (typeof inst.componentWillMount === 'function') {
+        {
+          if ( inst.componentWillMount.__suppressDeprecationWarning !== true) {
+            var _componentName4 = getComponentName(Component) || 'Unknown';
+
+            if (!didWarnAboutDeprecatedWillMount[_componentName4]) {
+              warn( // keep this warning in sync with ReactStrictModeWarning.js
+              'componentWillMount has been renamed, and is not recommended for use. ' + 'See https://fb.me/react-unsafe-component-lifecycles for details.\n\n' + '* Move code from componentWillMount to componentDidMount (preferred in most cases) ' + 'or the constructor.\n' + '\nPlease update the following components: %s', _componentName4);
+
+              didWarnAboutDeprecatedWillMount[_componentName4] = true;
+            }
+          }
+        } // In order to support react-lifecycles-compat polyfilled components,
+        // Unsafe lifecycles should not be invoked for any component with the new gDSFP.
+
+
+        if (typeof Component.getDerivedStateFromProps !== 'function') {
+          inst.componentWillMount();
+        }
+      }
+
+      if (typeof inst.UNSAFE_componentWillMount === 'function' && typeof Component.getDerivedStateFromProps !== 'function') {
+        // In order to support react-lifecycles-compat polyfilled components,
+        // Unsafe lifecycles should not be invoked for any component with the new gDSFP.
+        inst.UNSAFE_componentWillMount();
+      }
+
+      if (queue.length) {
+        var oldQueue = queue;
+        var oldReplace = replace;
+        queue = null;
+        replace = false;
+
+        if (oldReplace && oldQueue.length === 1) {
+          inst.state = oldQueue[0];
+        } else {
+          var nextState = oldReplace ? oldQueue[0] : inst.state;
+          var dontMutate = true;
+
+          for (var i = oldReplace ? 1 : 0; i < oldQueue.length; i++) {
+            var partial = oldQueue[i];
+
+            var _partialState = typeof partial === 'function' ? partial.call(inst, nextState, element.props, publicContext) : partial;
+
+            if (_partialState != null) {
+              if (dontMutate) {
+                dontMutate = false;
+                nextState = _assign({}, nextState, _partialState);
+              } else {
+                _assign(nextState, _partialState);
+              }
+            }
+          }
+
+          inst.state = nextState;
+        }
+      } else {
+        queue = null;
+      }
+    }
+
+    child = inst.render();
+
+    {
+      if (child === undefined && inst.render._isMockFunction) {
+        // This is probably bad practice. Consider warning here and
+        // deprecating this convenience.
+        child = null;
+      }
+    }
+
+    validateRenderResult(child, Component);
+    var childContext;
+
+    {
+      if (typeof inst.getChildContext === 'function') {
+        var _childContextTypes = Component.childContextTypes;
+
+        if (typeof _childContextTypes === 'object') {
+          childContext = inst.getChildContext();
+
+          for (var contextKey in childContext) {
+            if (!(contextKey in _childContextTypes)) {
+              {
+                throw Error( (getComponentName(Component) || 'Unknown') + ".getChildContext(): key \"" + contextKey + "\" is not defined in childContextTypes." );
+              }
+            }
+          }
+        } else {
+          {
+            error('%s.getChildContext(): childContextTypes must be defined in order to ' + 'use getChildContext().', getComponentName(Component) || 'Unknown');
+          }
+        }
+      }
+
+      if (childContext) {
+        context = _assign({}, context, childContext);
+      }
+    }
+  }
+
+  return {
+    child: child,
+    context: context
+  };
+}
+
+var ReactDOMServerRenderer =
+/*#__PURE__*/
+function () {
+  // TODO: type this more strictly:
+  // DEV-only
+  function ReactDOMServerRenderer(children, makeStaticMarkup) {
+    var flatChildren = flattenTopLevelChildren(children);
+    var topFrame = {
+      type: null,
+      // Assume all trees start in the HTML namespace (not totally true, but
+      // this is what we did historically)
+      domNamespace: Namespaces.html,
+      children: flatChildren,
+      childIndex: 0,
+      context: emptyObject,
+      footer: ''
+    };
+
+    {
+      topFrame.debugElementStack = [];
+    }
+
+    this.threadID = allocThreadID();
+    this.stack = [topFrame];
+    this.exhausted = false;
+    this.currentSelectValue = null;
+    this.previousWasTextNode = false;
+    this.makeStaticMarkup = makeStaticMarkup;
+    this.suspenseDepth = 0; // Context (new API)
+
+    this.contextIndex = -1;
+    this.contextStack = [];
+    this.contextValueStack = [];
+
+    {
+      this.contextProviderStack = [];
+    }
+  }
+
+  var _proto = ReactDOMServerRenderer.prototype;
+
+  _proto.destroy = function destroy() {
+    if (!this.exhausted) {
+      this.exhausted = true;
+      this.clearProviders();
+      freeThreadID(this.threadID);
+    }
+  }
+  /**
+   * Note: We use just two stacks regardless of how many context providers you have.
+   * Providers are always popped in the reverse order to how they were pushed
+   * so we always know on the way down which provider you'll encounter next on the way up.
+   * On the way down, we push the current provider, and its context value *before*
+   * we mutated it, onto the stacks. Therefore, on the way up, we always know which
+   * provider needs to be "restored" to which value.
+   * https://github.com/facebook/react/pull/12985#issuecomment-396301248
+   */
+  ;
+
+  _proto.pushProvider = function pushProvider(provider) {
+    var index = ++this.contextIndex;
+    var context = provider.type._context;
+    var threadID = this.threadID;
+    validateContextBounds(context, threadID);
+    var previousValue = context[threadID]; // Remember which value to restore this context to on our way up.
+
+    this.contextStack[index] = context;
+    this.contextValueStack[index] = previousValue;
+
+    {
+      // Only used for push/pop mismatch warnings.
+      this.contextProviderStack[index] = provider;
+    } // Mutate the current value.
+
+
+    context[threadID] = provider.props.value;
+  };
+
+  _proto.popProvider = function popProvider(provider) {
+    var index = this.contextIndex;
+
+    {
+      if (index < 0 || provider !== this.contextProviderStack[index]) {
+        error('Unexpected pop.');
+      }
+    }
+
+    var context = this.contextStack[index];
+    var previousValue = this.contextValueStack[index]; // "Hide" these null assignments from Flow by using `any`
+    // because conceptually they are deletions--as long as we
+    // promise to never access values beyond `this.contextIndex`.
+
+    this.contextStack[index] = null;
+    this.contextValueStack[index] = null;
+
+    {
+      this.contextProviderStack[index] = null;
+    }
+
+    this.contextIndex--; // Restore to the previous value we stored as we were walking down.
+    // We've already verified that this context has been expanded to accommodate
+    // this thread id, so we don't need to do it again.
+
+    context[this.threadID] = previousValue;
+  };
+
+  _proto.clearProviders = function clearProviders() {
+    // Restore any remaining providers on the stack to previous values
+    for (var index = this.contextIndex; index >= 0; index--) {
+      var context = this.contextStack[index];
+      var previousValue = this.contextValueStack[index];
+      context[this.threadID] = previousValue;
+    }
+  };
+
+  _proto.read = function read(bytes) {
+    if (this.exhausted) {
+      return null;
+    }
+
+    var prevThreadID = currentThreadID;
+    setCurrentThreadID(this.threadID);
+    var prevDispatcher = ReactCurrentDispatcher.current;
+    ReactCurrentDispatcher.current = Dispatcher;
+
+    try {
+      // Markup generated within <Suspense> ends up buffered until we know
+      // nothing in that boundary suspended
+      var out = [''];
+      var suspended = false;
+
+      while (out[0].length < bytes) {
+        if (this.stack.length === 0) {
+          this.exhausted = true;
+          freeThreadID(this.threadID);
+          break;
+        }
+
+        var frame = this.stack[this.stack.length - 1];
+
+        if (suspended || frame.childIndex >= frame.children.length) {
+          var footer = frame.footer;
+
+          if (footer !== '') {
+            this.previousWasTextNode = false;
+          }
+
+          this.stack.pop();
+
+          if (frame.type === 'select') {
+            this.currentSelectValue = null;
+          } else if (frame.type != null && frame.type.type != null && frame.type.type.$$typeof === REACT_PROVIDER_TYPE) {
+            var provider = frame.type;
+            this.popProvider(provider);
+          } else if (frame.type === REACT_SUSPENSE_TYPE) {
+            this.suspenseDepth--;
+            var buffered = out.pop();
+
+            if (suspended) {
+              suspended = false; // If rendering was suspended at this boundary, render the fallbackFrame
+
+              var fallbackFrame = frame.fallbackFrame;
+
+              if (!fallbackFrame) {
+                {
+                  throw Error(true ? "ReactDOMServer did not find an internal fallback frame for Suspense. This is a bug in React. Please file an issue." : formatProdErrorMessage(303));
+                }
+              }
+
+              this.stack.push(fallbackFrame);
+              out[this.suspenseDepth] += '<!--$!-->'; // Skip flushing output since we're switching to the fallback
+
+              continue;
+            } else {
+              out[this.suspenseDepth] += buffered;
+            }
+          } // Flush output
+
+
+          out[this.suspenseDepth] += footer;
+          continue;
+        }
+
+        var child = frame.children[frame.childIndex++];
+        var outBuffer = '';
+
+        if (true) {
+          pushCurrentDebugStack(this.stack); // We're starting work on this frame, so reset its inner stack.
+
+          frame.debugElementStack.length = 0;
+        }
+
+        try {
+          outBuffer += this.render(child, frame.context, frame.domNamespace);
+        } catch (err) {
+          if (err != null && typeof err.then === 'function') {
+            if (enableSuspenseServerRenderer) {
+              if (!(this.suspenseDepth > 0)) {
+                {
+                  throw Error(true ? "A React component suspended while rendering, but no fallback UI was specified.\n\nAdd a <Suspense fallback=...> component higher in the tree to provide a loading indicator or placeholder to display." : formatProdErrorMessage(342));
+                }
+              }
+
+              suspended = true;
+            } else {
+              if (!false) {
+                {
+                  throw Error(true ? "ReactDOMServer does not yet support Suspense." : formatProdErrorMessage(294));
+                }
+              }
+            }
+          } else {
+            throw err;
+          }
+        } finally {
+          if (true) {
+            popCurrentDebugStack();
+          }
+        }
+
+        if (out.length <= this.suspenseDepth) {
+          out.push('');
+        }
+
+        out[this.suspenseDepth] += outBuffer;
+      }
+
+      return out[0];
+    } finally {
+      ReactCurrentDispatcher.current = prevDispatcher;
+      setCurrentThreadID(prevThreadID);
+    }
+  };
+
+  _proto.render = function render(child, context, parentNamespace) {
+    if (typeof child === 'string' || typeof child === 'number') {
+      var text = '' + child;
+
+      if (text === '') {
+        return '';
+      }
+
+      if (this.makeStaticMarkup) {
+        return escapeTextForBrowser(text);
+      }
+
+      if (this.previousWasTextNode) {
+        return '<!-- -->' + escapeTextForBrowser(text);
+      }
+
+      this.previousWasTextNode = true;
+      return escapeTextForBrowser(text);
+    } else {
+      var nextChild;
+
+      var _resolve = resolve(child, context, this.threadID);
+
+      nextChild = _resolve.child;
+      context = _resolve.context;
+
+      if (nextChild === null || nextChild === false) {
+        return '';
+      } else if (!React.isValidElement(nextChild)) {
+        if (nextChild != null && nextChild.$$typeof != null) {
+          // Catch unexpected special types early.
+          var $$typeof = nextChild.$$typeof;
+
+          if (!($$typeof !== REACT_PORTAL_TYPE)) {
+            {
+              throw Error( "Portals are not currently supported by the server renderer. Render them conditionally so that they only appear on the client render." );
+            }
+          } // Catch-all to prevent an infinite loop if React.Children.toArray() supports some new type.
+
+
+          {
+            {
+              throw Error( "Unknown element-like object type: " + $$typeof.toString() + ". This is likely a bug in React. Please file an issue." );
+            }
+          }
+        }
+
+        var nextChildren = toArray(nextChild);
+        var frame = {
+          type: null,
+          domNamespace: parentNamespace,
+          children: nextChildren,
+          childIndex: 0,
+          context: context,
+          footer: ''
+        };
+
+        {
+          frame.debugElementStack = [];
+        }
+
+        this.stack.push(frame);
+        return '';
+      } // Safe because we just checked it's an element.
+
+
+      var nextElement = nextChild;
+      var elementType = nextElement.type;
+
+      if (typeof elementType === 'string') {
+        return this.renderDOM(nextElement, context, parentNamespace);
+      }
+
+      switch (elementType) {
+        case REACT_STRICT_MODE_TYPE:
+        case REACT_CONCURRENT_MODE_TYPE:
+        case REACT_PROFILER_TYPE:
+        case REACT_SUSPENSE_LIST_TYPE:
+        case REACT_FRAGMENT_TYPE:
+          {
+            var _nextChildren = toArray(nextChild.props.children);
+
+            var _frame = {
+              type: null,
+              domNamespace: parentNamespace,
+              children: _nextChildren,
+              childIndex: 0,
+              context: context,
+              footer: ''
+            };
+
+            {
+              _frame.debugElementStack = [];
+            }
+
+            this.stack.push(_frame);
+            return '';
+          }
+
+        case REACT_SUSPENSE_TYPE:
+          {
+            {
+              {
+                {
+                  throw Error( "ReactDOMServer does not yet support Suspense." );
+                }
+              }
+            }
+          }
+      }
+
+      if (typeof elementType === 'object' && elementType !== null) {
+        switch (elementType.$$typeof) {
+          case REACT_FORWARD_REF_TYPE:
+            {
+              var element = nextChild;
+
+              var _nextChildren4;
+
+              var componentIdentity = {};
+              prepareToUseHooks(componentIdentity);
+              _nextChildren4 = elementType.render(element.props, element.ref);
+              _nextChildren4 = finishHooks(elementType.render, element.props, _nextChildren4, element.ref);
+              _nextChildren4 = toArray(_nextChildren4);
+              var _frame4 = {
+                type: null,
+                domNamespace: parentNamespace,
+                children: _nextChildren4,
+                childIndex: 0,
+                context: context,
+                footer: ''
+              };
+
+              {
+                _frame4.debugElementStack = [];
+              }
+
+              this.stack.push(_frame4);
+              return '';
+            }
+
+          case REACT_MEMO_TYPE:
+            {
+              var _element = nextChild;
+              var _nextChildren5 = [React.createElement(elementType.type, _assign({
+                ref: _element.ref
+              }, _element.props))];
+              var _frame5 = {
+                type: null,
+                domNamespace: parentNamespace,
+                children: _nextChildren5,
+                childIndex: 0,
+                context: context,
+                footer: ''
+              };
+
+              {
+                _frame5.debugElementStack = [];
+              }
+
+              this.stack.push(_frame5);
+              return '';
+            }
+
+          case REACT_PROVIDER_TYPE:
+            {
+              var provider = nextChild;
+              var nextProps = provider.props;
+
+              var _nextChildren6 = toArray(nextProps.children);
+
+              var _frame6 = {
+                type: provider,
+                domNamespace: parentNamespace,
+                children: _nextChildren6,
+                childIndex: 0,
+                context: context,
+                footer: ''
+              };
+
+              {
+                _frame6.debugElementStack = [];
+              }
+
+              this.pushProvider(provider);
+              this.stack.push(_frame6);
+              return '';
+            }
+
+          case REACT_CONTEXT_TYPE:
+            {
+              var reactContext = nextChild.type; // The logic below for Context differs depending on PROD or DEV mode. In
+              // DEV mode, we create a separate object for Context.Consumer that acts
+              // like a proxy to Context. This proxy object adds unnecessary code in PROD
+              // so we use the old behaviour (Context.Consumer references Context) to
+              // reduce size and overhead. The separate object references context via
+              // a property called "_context", which also gives us the ability to check
+              // in DEV mode if this property exists or not and warn if it does not.
+
+              {
+                if (reactContext._context === undefined) {
+                  // This may be because it's a Context (rather than a Consumer).
+                  // Or it may be because it's older React where they're the same thing.
+                  // We only want to warn if we're sure it's a new React.
+                  if (reactContext !== reactContext.Consumer) {
+                    if (!hasWarnedAboutUsingContextAsConsumer) {
+                      hasWarnedAboutUsingContextAsConsumer = true;
+
+                      error('Rendering <Context> directly is not supported and will be removed in ' + 'a future major release. Did you mean to render <Context.Consumer> instead?');
+                    }
+                  }
+                } else {
+                  reactContext = reactContext._context;
+                }
+              }
+
+              var _nextProps = nextChild.props;
+              var threadID = this.threadID;
+              validateContextBounds(reactContext, threadID);
+              var nextValue = reactContext[threadID];
+
+              var _nextChildren7 = toArray(_nextProps.children(nextValue));
+
+              var _frame7 = {
+                type: nextChild,
+                domNamespace: parentNamespace,
+                children: _nextChildren7,
+                childIndex: 0,
+                context: context,
+                footer: ''
+              };
+
+              {
+                _frame7.debugElementStack = [];
+              }
+
+              this.stack.push(_frame7);
+              return '';
+            }
+          // eslint-disable-next-line-no-fallthrough
+
+          case REACT_FUNDAMENTAL_TYPE:
+            {
+
+              {
+                {
+                  throw Error( "ReactDOMServer does not yet support the fundamental API." );
+                }
+              }
+            }
+          // eslint-disable-next-line-no-fallthrough
+
+          case REACT_LAZY_TYPE:
+            {
+              var _element2 = nextChild;
+              var lazyComponent = nextChild.type; // Attempt to initialize lazy component regardless of whether the
+              // suspense server-side renderer is enabled so synchronously
+              // resolved constructors are supported.
+
+              initializeLazyComponentType(lazyComponent);
+
+              switch (lazyComponent._status) {
+                case Resolved:
+                  {
+                    var _nextChildren9 = [React.createElement(lazyComponent._result, _assign({
+                      ref: _element2.ref
+                    }, _element2.props))];
+                    var _frame9 = {
+                      type: null,
+                      domNamespace: parentNamespace,
+                      children: _nextChildren9,
+                      childIndex: 0,
+                      context: context,
+                      footer: ''
+                    };
+
+                    {
+                      _frame9.debugElementStack = [];
+                    }
+
+                    this.stack.push(_frame9);
+                    return '';
+                  }
+
+                case Rejected:
+                  throw lazyComponent._result;
+
+                case Pending:
+                default:
+                  {
+                    {
+                      throw Error( "ReactDOMServer does not yet support lazy-loaded components." );
+                    }
+                  }
+
+              }
+            }
+          // eslint-disable-next-line-no-fallthrough
+
+          case REACT_SCOPE_TYPE:
+            {
+
+              {
+                {
+                  throw Error( "ReactDOMServer does not yet support scope components." );
+                }
+              }
+            }
+        }
+      }
+
+      var info = '';
+
+      {
+        var owner = nextElement._owner;
+
+        if (elementType === undefined || typeof elementType === 'object' && elementType !== null && Object.keys(elementType).length === 0) {
+          info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and " + 'named imports.';
+        }
+
+        var ownerName = owner ? getComponentName(owner) : null;
+
+        if (ownerName) {
+          info += '\n\nCheck the render method of `' + ownerName + '`.';
+        }
+      }
+
+      {
+        {
+          throw Error( "Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: " + (elementType == null ? elementType : typeof elementType) + "." + info );
+        }
+      }
+    }
+  };
+
+  _proto.renderDOM = function renderDOM(element, context, parentNamespace) {
+    var tag = element.type.toLowerCase();
+    var namespace = parentNamespace;
+
+    if (parentNamespace === Namespaces.html) {
+      namespace = getIntrinsicNamespace(tag);
+    }
+
+    {
+      if (namespace === Namespaces.html) {
+        // Should this check be gated by parent namespace? Not sure we want to
+        // allow <SVG> or <mATH>.
+        if (tag !== element.type) {
+          error('<%s /> is using incorrect casing. ' + 'Use PascalCase for React components, ' + 'or lowercase for HTML elements.', element.type);
+        }
+      }
+    }
+
+    validateDangerousTag(tag);
+    var props = element.props;
+
+    if (tag === 'input') {
+      {
+        ReactControlledValuePropTypes.checkPropTypes('input', props);
+
+        if (props.checked !== undefined && props.defaultChecked !== undefined && !didWarnDefaultChecked) {
+          error('%s contains an input of type %s with both checked and defaultChecked props. ' + 'Input elements must be either controlled or uncontrolled ' + '(specify either the checked prop, or the defaultChecked prop, but not ' + 'both). Decide between using a controlled or uncontrolled input ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components', 'A component', props.type);
+
+          didWarnDefaultChecked = true;
+        }
+
+        if (props.value !== undefined && props.defaultValue !== undefined && !didWarnDefaultInputValue) {
+          error('%s contains an input of type %s with both value and defaultValue props. ' + 'Input elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled input ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components', 'A component', props.type);
+
+          didWarnDefaultInputValue = true;
+        }
+      }
+
+      props = _assign({
+        type: undefined
+      }, props, {
+        defaultChecked: undefined,
+        defaultValue: undefined,
+        value: props.value != null ? props.value : props.defaultValue,
+        checked: props.checked != null ? props.checked : props.defaultChecked
+      });
+    } else if (tag === 'textarea') {
+      {
+        ReactControlledValuePropTypes.checkPropTypes('textarea', props);
+
+        if (props.value !== undefined && props.defaultValue !== undefined && !didWarnDefaultTextareaValue) {
+          error('Textarea elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled textarea ' + 'and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components');
+
+          didWarnDefaultTextareaValue = true;
+        }
+      }
+
+      var initialValue = props.value;
+
+      if (initialValue == null) {
+        var defaultValue = props.defaultValue; // TODO (yungsters): Remove support for children content in <textarea>.
+
+        var textareaChildren = props.children;
+
+        if (textareaChildren != null) {
+          {
+            error('Use the `defaultValue` or `value` props instead of setting ' + 'children on <textarea>.');
+          }
+
+          if (!(defaultValue == null)) {
+            {
+              throw Error( "If you supply `defaultValue` on a <textarea>, do not pass children." );
+            }
+          }
+
+          if (Array.isArray(textareaChildren)) {
+            if (!(textareaChildren.length <= 1)) {
+              {
+                throw Error( "<textarea> can only have at most one child." );
+              }
+            }
+
+            textareaChildren = textareaChildren[0];
+          }
+
+          defaultValue = '' + textareaChildren;
+        }
+
+        if (defaultValue == null) {
+          defaultValue = '';
+        }
+
+        initialValue = defaultValue;
+      }
+
+      props = _assign({}, props, {
+        value: undefined,
+        children: '' + initialValue
+      });
+    } else if (tag === 'select') {
+      {
+        ReactControlledValuePropTypes.checkPropTypes('select', props);
+
+        for (var i = 0; i < valuePropNames.length; i++) {
+          var propName = valuePropNames[i];
+
+          if (props[propName] == null) {
+            continue;
+          }
+
+          var isArray = Array.isArray(props[propName]);
+
+          if (props.multiple && !isArray) {
+            error('The `%s` prop supplied to <select> must be an array if ' + '`multiple` is true.', propName);
+          } else if (!props.multiple && isArray) {
+            error('The `%s` prop supplied to <select> must be a scalar ' + 'value if `multiple` is false.', propName);
+          }
+        }
+
+        if (props.value !== undefined && props.defaultValue !== undefined && !didWarnDefaultSelectValue) {
+          error('Select elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled select ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components');
+
+          didWarnDefaultSelectValue = true;
+        }
+      }
+
+      this.currentSelectValue = props.value != null ? props.value : props.defaultValue;
+      props = _assign({}, props, {
+        value: undefined
+      });
+    } else if (tag === 'option') {
+      var selected = null;
+      var selectValue = this.currentSelectValue;
+      var optionChildren = flattenOptionChildren(props.children);
+
+      if (selectValue != null) {
+        var value;
+
+        if (props.value != null) {
+          value = props.value + '';
+        } else {
+          value = optionChildren;
+        }
+
+        selected = false;
+
+        if (Array.isArray(selectValue)) {
+          // multiple
+          for (var j = 0; j < selectValue.length; j++) {
+            if ('' + selectValue[j] === value) {
+              selected = true;
+              break;
+            }
+          }
+        } else {
+          selected = '' + selectValue === value;
+        }
+
+        props = _assign({
+          selected: undefined,
+          children: undefined
+        }, props, {
+          selected: selected,
+          children: optionChildren
+        });
+      }
+    }
+
+    {
+      validatePropertiesInDevelopment(tag, props);
+    }
+
+    assertValidProps(tag, props);
+    var out = createOpenTagMarkup(element.type, tag, props, namespace, this.makeStaticMarkup, this.stack.length === 1);
+    var footer = '';
+
+    if (omittedCloseTags.hasOwnProperty(tag)) {
+      out += '/>';
+    } else {
+      out += '>';
+      footer = '</' + element.type + '>';
+    }
+
+    var children;
+    var innerMarkup = getNonChildrenInnerMarkup(props);
+
+    if (innerMarkup != null) {
+      children = [];
+
+      if (newlineEatingTags.hasOwnProperty(tag) && innerMarkup.charAt(0) === '\n') {
+        // text/html ignores the first character in these tags if it's a newline
+        // Prefer to break application/xml over text/html (for now) by adding
+        // a newline specifically to get eaten by the parser. (Alternately for
+        // textareas, replacing "^\n" with "\r\n" doesn't get eaten, and the first
+        // \r is normalized out by HTMLTextAreaElement#value.)
+        // See: <http://www.w3.org/TR/html-polyglot/#newlines-in-textarea-and-pre>
+        // See: <http://www.w3.org/TR/html5/syntax.html#element-restrictions>
+        // See: <http://www.w3.org/TR/html5/syntax.html#newlines>
+        // See: Parsing of "textarea" "listing" and "pre" elements
+        //  from <http://www.w3.org/TR/html5/syntax.html#parsing-main-inbody>
+        out += '\n';
+      }
+
+      out += innerMarkup;
+    } else {
+      children = toArray(props.children);
+    }
+
+    var frame = {
+      domNamespace: getChildNamespace(parentNamespace, element.type),
+      type: tag,
+      children: children,
+      childIndex: 0,
+      context: context,
+      footer: footer
+    };
+
+    {
+      frame.debugElementStack = [];
+    }
+
+    this.stack.push(frame);
+    this.previousWasTextNode = false;
+    return out;
+  };
+
+  return ReactDOMServerRenderer;
+}();
+
+/**
+ * Render a ReactElement to its initial HTML. This should only be used on the
+ * server.
+ * See https://reactjs.org/docs/react-dom-server.html#rendertostring
+ */
+
+function renderToString(element) {
+  var renderer = new ReactDOMServerRenderer(element, false);
+
+  try {
+    var markup = renderer.read(Infinity);
+    return markup;
+  } finally {
+    renderer.destroy();
+  }
+}
+/**
+ * Similar to renderToString, except this doesn't create extra DOM attributes
+ * such as data-react-id that React uses internally.
+ * See https://reactjs.org/docs/react-dom-server.html#rendertostaticmarkup
+ */
+
+function renderToStaticMarkup(element) {
+  var renderer = new ReactDOMServerRenderer(element, true);
+
+  try {
+    var markup = renderer.read(Infinity);
+    return markup;
+  } finally {
+    renderer.destroy();
+  }
+}
+
+function renderToNodeStream() {
+  {
+    {
+      throw Error( "ReactDOMServer.renderToNodeStream(): The streaming API is not available in the browser. Use ReactDOMServer.renderToString() instead." );
+    }
+  }
+}
+
+function renderToStaticNodeStream() {
+  {
+    {
+      throw Error( "ReactDOMServer.renderToStaticNodeStream(): The streaming API is not available in the browser. Use ReactDOMServer.renderToStaticMarkup() instead." );
+    }
+  }
+} // Note: when changing this, also consider https://github.com/facebook/react/issues/11526
+
+
+var ReactDOMServer = {
+  renderToString: renderToString,
+  renderToStaticMarkup: renderToStaticMarkup,
+  renderToNodeStream: renderToNodeStream,
+  renderToStaticNodeStream: renderToStaticNodeStream,
+  version: ReactVersion
+};
+
+// TODO: decide on the top-level export form.
+// This is hacky but makes it work with both Rollup and Jest
+
+
+var server_browser = ReactDOMServer.default || ReactDOMServer;
+
+module.exports = server_browser;
+  })();
+}
diff --git a/igv_component/node_modules/react-dom/cjs/react-dom-server.browser.production.min.js b/igv_component/node_modules/react-dom/cjs/react-dom-server.browser.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..c8c55bb60a0dbed7786d5002244b63f72f1810e3
--- /dev/null
+++ b/igv_component/node_modules/react-dom/cjs/react-dom-server.browser.production.min.js
@@ -0,0 +1,54 @@
+/** @license React v16.14.0
+ * react-dom-server.browser.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';var k=require("object-assign"),l=require("react");function q(a){for(var b="https://reactjs.org/docs/error-decoder.html?invariant="+a,c=1;c<arguments.length;c++)b+="&args[]="+encodeURIComponent(arguments[c]);return"Minified React error #"+a+"; visit "+b+" for the full message or use the non-minified dev environment for full errors and additional helpful warnings."}
+var t="function"===typeof Symbol&&Symbol.for,aa=t?Symbol.for("react.portal"):60106,u=t?Symbol.for("react.fragment"):60107,ba=t?Symbol.for("react.strict_mode"):60108,ca=t?Symbol.for("react.profiler"):60114,v=t?Symbol.for("react.provider"):60109,da=t?Symbol.for("react.context"):60110,ea=t?Symbol.for("react.concurrent_mode"):60111,fa=t?Symbol.for("react.forward_ref"):60112,B=t?Symbol.for("react.suspense"):60113,ha=t?Symbol.for("react.suspense_list"):60120,ia=t?Symbol.for("react.memo"):60115,ja=t?Symbol.for("react.lazy"):
+60116,ka=t?Symbol.for("react.block"):60121,la=t?Symbol.for("react.fundamental"):60117,ma=t?Symbol.for("react.scope"):60119;function na(a){if(-1===a._status){a._status=0;var b=a._ctor;b=b();a._result=b;b.then(function(c){0===a._status&&(c=c.default,a._status=1,a._result=c)},function(c){0===a._status&&(a._status=2,a._result=c)})}}
+function C(a){if(null==a)return null;if("function"===typeof a)return a.displayName||a.name||null;if("string"===typeof a)return a;switch(a){case u:return"Fragment";case aa:return"Portal";case ca:return"Profiler";case ba:return"StrictMode";case B:return"Suspense";case ha:return"SuspenseList"}if("object"===typeof a)switch(a.$$typeof){case da:return"Context.Consumer";case v:return"Context.Provider";case fa:var b=a.render;b=b.displayName||b.name||"";return a.displayName||(""!==b?"ForwardRef("+b+")":"ForwardRef");
+case ia:return C(a.type);case ka:return C(a.render);case ja:if(a=1===a._status?a._result:null)return C(a)}return null}var D=l.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;D.hasOwnProperty("ReactCurrentDispatcher")||(D.ReactCurrentDispatcher={current:null});D.hasOwnProperty("ReactCurrentBatchConfig")||(D.ReactCurrentBatchConfig={suspense:null});var oa={};function E(a,b){for(var c=a._threadCount|0;c<=b;c++)a[c]=a._currentValue2,a._threadCount=c+1}
+function pa(a,b,c,d){if(d&&(d=a.contextType,"object"===typeof d&&null!==d))return E(d,c),d[c];if(a=a.contextTypes){c={};for(var f in a)c[f]=b[f];b=c}else b=oa;return b}for(var F=new Uint16Array(16),H=0;15>H;H++)F[H]=H+1;F[15]=0;
+var qa=/^[:A-Z_a-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD][:A-Z_a-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD\-.0-9\u00B7\u0300-\u036F\u203F-\u2040]*$/,ra=Object.prototype.hasOwnProperty,sa={},ta={};
+function ua(a){if(ra.call(ta,a))return!0;if(ra.call(sa,a))return!1;if(qa.test(a))return ta[a]=!0;sa[a]=!0;return!1}function va(a,b,c,d){if(null!==c&&0===c.type)return!1;switch(typeof b){case "function":case "symbol":return!0;case "boolean":if(d)return!1;if(null!==c)return!c.acceptsBooleans;a=a.toLowerCase().slice(0,5);return"data-"!==a&&"aria-"!==a;default:return!1}}
+function wa(a,b,c,d){if(null===b||"undefined"===typeof b||va(a,b,c,d))return!0;if(d)return!1;if(null!==c)switch(c.type){case 3:return!b;case 4:return!1===b;case 5:return isNaN(b);case 6:return isNaN(b)||1>b}return!1}function J(a,b,c,d,f,g){this.acceptsBooleans=2===b||3===b||4===b;this.attributeName=d;this.attributeNamespace=f;this.mustUseProperty=c;this.propertyName=a;this.type=b;this.sanitizeURL=g}var K={};
+"children dangerouslySetInnerHTML defaultValue defaultChecked innerHTML suppressContentEditableWarning suppressHydrationWarning style".split(" ").forEach(function(a){K[a]=new J(a,0,!1,a,null,!1)});[["acceptCharset","accept-charset"],["className","class"],["htmlFor","for"],["httpEquiv","http-equiv"]].forEach(function(a){var b=a[0];K[b]=new J(b,1,!1,a[1],null,!1)});["contentEditable","draggable","spellCheck","value"].forEach(function(a){K[a]=new J(a,2,!1,a.toLowerCase(),null,!1)});
+["autoReverse","externalResourcesRequired","focusable","preserveAlpha"].forEach(function(a){K[a]=new J(a,2,!1,a,null,!1)});"allowFullScreen async autoFocus autoPlay controls default defer disabled disablePictureInPicture formNoValidate hidden loop noModule noValidate open playsInline readOnly required reversed scoped seamless itemScope".split(" ").forEach(function(a){K[a]=new J(a,3,!1,a.toLowerCase(),null,!1)});
+["checked","multiple","muted","selected"].forEach(function(a){K[a]=new J(a,3,!0,a,null,!1)});["capture","download"].forEach(function(a){K[a]=new J(a,4,!1,a,null,!1)});["cols","rows","size","span"].forEach(function(a){K[a]=new J(a,6,!1,a,null,!1)});["rowSpan","start"].forEach(function(a){K[a]=new J(a,5,!1,a.toLowerCase(),null,!1)});var L=/[\-:]([a-z])/g;function M(a){return a[1].toUpperCase()}
+"accent-height alignment-baseline arabic-form baseline-shift cap-height clip-path clip-rule color-interpolation color-interpolation-filters color-profile color-rendering dominant-baseline enable-background fill-opacity fill-rule flood-color flood-opacity font-family font-size font-size-adjust font-stretch font-style font-variant font-weight glyph-name glyph-orientation-horizontal glyph-orientation-vertical horiz-adv-x horiz-origin-x image-rendering letter-spacing lighting-color marker-end marker-mid marker-start overline-position overline-thickness paint-order panose-1 pointer-events rendering-intent shape-rendering stop-color stop-opacity strikethrough-position strikethrough-thickness stroke-dasharray stroke-dashoffset stroke-linecap stroke-linejoin stroke-miterlimit stroke-opacity stroke-width text-anchor text-decoration text-rendering underline-position underline-thickness unicode-bidi unicode-range units-per-em v-alphabetic v-hanging v-ideographic v-mathematical vector-effect vert-adv-y vert-origin-x vert-origin-y word-spacing writing-mode xmlns:xlink x-height".split(" ").forEach(function(a){var b=a.replace(L,
+M);K[b]=new J(b,1,!1,a,null,!1)});"xlink:actuate xlink:arcrole xlink:role xlink:show xlink:title xlink:type".split(" ").forEach(function(a){var b=a.replace(L,M);K[b]=new J(b,1,!1,a,"http://www.w3.org/1999/xlink",!1)});["xml:base","xml:lang","xml:space"].forEach(function(a){var b=a.replace(L,M);K[b]=new J(b,1,!1,a,"http://www.w3.org/XML/1998/namespace",!1)});["tabIndex","crossOrigin"].forEach(function(a){K[a]=new J(a,1,!1,a.toLowerCase(),null,!1)});
+K.xlinkHref=new J("xlinkHref",1,!1,"xlink:href","http://www.w3.org/1999/xlink",!0);["src","href","action","formAction"].forEach(function(a){K[a]=new J(a,1,!1,a.toLowerCase(),null,!0)});var xa=/["'&<>]/;
+function N(a){if("boolean"===typeof a||"number"===typeof a)return""+a;a=""+a;var b=xa.exec(a);if(b){var c="",d,f=0;for(d=b.index;d<a.length;d++){switch(a.charCodeAt(d)){case 34:b="&quot;";break;case 38:b="&amp;";break;case 39:b="&#x27;";break;case 60:b="&lt;";break;case 62:b="&gt;";break;default:continue}f!==d&&(c+=a.substring(f,d));f=d+1;c+=b}a=f!==d?c+a.substring(f,d):c}return a}
+function ya(a,b){var c=K.hasOwnProperty(a)?K[a]:null;var d;if(d="style"!==a)d=null!==c?0===c.type:!(2<a.length)||"o"!==a[0]&&"O"!==a[0]||"n"!==a[1]&&"N"!==a[1]?!1:!0;if(d||wa(a,b,c,!1))return"";if(null!==c){a=c.attributeName;d=c.type;if(3===d||4===d&&!0===b)return a+'=""';c.sanitizeURL&&(b=""+b);return a+'="'+(N(b)+'"')}return ua(a)?a+'="'+(N(b)+'"'):""}function za(a,b){return a===b&&(0!==a||1/a===1/b)||a!==a&&b!==b}
+var Aa="function"===typeof Object.is?Object.is:za,O=null,P=null,Q=null,R=!1,S=!1,U=null,V=0;function W(){if(null===O)throw Error(q(321));return O}function Ba(){if(0<V)throw Error(q(312));return{memoizedState:null,queue:null,next:null}}function Ca(){null===Q?null===P?(R=!1,P=Q=Ba()):(R=!0,Q=P):null===Q.next?(R=!1,Q=Q.next=Ba()):(R=!0,Q=Q.next);return Q}function Da(a,b,c,d){for(;S;)S=!1,V+=1,Q=null,c=a(b,d);P=O=null;V=0;Q=U=null;return c}function Ea(a,b){return"function"===typeof b?b(a):b}
+function Fa(a,b,c){O=W();Q=Ca();if(R){var d=Q.queue;b=d.dispatch;if(null!==U&&(c=U.get(d),void 0!==c)){U.delete(d);d=Q.memoizedState;do d=a(d,c.action),c=c.next;while(null!==c);Q.memoizedState=d;return[d,b]}return[Q.memoizedState,b]}a=a===Ea?"function"===typeof b?b():b:void 0!==c?c(b):b;Q.memoizedState=a;a=Q.queue={last:null,dispatch:null};a=a.dispatch=Ga.bind(null,O,a);return[Q.memoizedState,a]}
+function Ga(a,b,c){if(!(25>V))throw Error(q(301));if(a===O)if(S=!0,a={action:c,next:null},null===U&&(U=new Map),c=U.get(b),void 0===c)U.set(b,a);else{for(b=c;null!==b.next;)b=b.next;b.next=a}}function Ha(){}
+var X=0,Ia={readContext:function(a){var b=X;E(a,b);return a[b]},useContext:function(a){W();var b=X;E(a,b);return a[b]},useMemo:function(a,b){O=W();Q=Ca();b=void 0===b?null:b;if(null!==Q){var c=Q.memoizedState;if(null!==c&&null!==b){a:{var d=c[1];if(null===d)d=!1;else{for(var f=0;f<d.length&&f<b.length;f++)if(!Aa(b[f],d[f])){d=!1;break a}d=!0}}if(d)return c[0]}}a=a();Q.memoizedState=[a,b];return a},useReducer:Fa,useRef:function(a){O=W();Q=Ca();var b=Q.memoizedState;return null===b?(a={current:a},Q.memoizedState=
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+function Ka(a){switch(a){case "svg":return"http://www.w3.org/2000/svg";case "math":return"http://www.w3.org/1998/Math/MathML";default:return"http://www.w3.org/1999/xhtml"}}
+var La={area:!0,base:!0,br:!0,col:!0,embed:!0,hr:!0,img:!0,input:!0,keygen:!0,link:!0,meta:!0,param:!0,source:!0,track:!0,wbr:!0},Ma=k({menuitem:!0},La),Y={animationIterationCount:!0,borderImageOutset:!0,borderImageSlice:!0,borderImageWidth:!0,boxFlex:!0,boxFlexGroup:!0,boxOrdinalGroup:!0,columnCount:!0,columns:!0,flex:!0,flexGrow:!0,flexPositive:!0,flexShrink:!0,flexNegative:!0,flexOrder:!0,gridArea:!0,gridRow:!0,gridRowEnd:!0,gridRowSpan:!0,gridRowStart:!0,gridColumn:!0,gridColumnEnd:!0,gridColumnSpan:!0,
+gridColumnStart:!0,fontWeight:!0,lineClamp:!0,lineHeight:!0,opacity:!0,order:!0,orphans:!0,tabSize:!0,widows:!0,zIndex:!0,zoom:!0,fillOpacity:!0,floodOpacity:!0,stopOpacity:!0,strokeDasharray:!0,strokeDashoffset:!0,strokeMiterlimit:!0,strokeOpacity:!0,strokeWidth:!0},Na=["Webkit","ms","Moz","O"];Object.keys(Y).forEach(function(a){Na.forEach(function(b){b=b+a.charAt(0).toUpperCase()+a.substring(1);Y[b]=Y[a]})});
+var Oa=/([A-Z])/g,Pa=/^ms-/,Z=l.Children.toArray,Qa=D.ReactCurrentDispatcher,Ra={listing:!0,pre:!0,textarea:!0},Sa=/^[a-zA-Z][a-zA-Z:_\.\-\d]*$/,Ta={},Ua={};function Va(a){if(void 0===a||null===a)return a;var b="";l.Children.forEach(a,function(a){null!=a&&(b+=a)});return b}var Wa=Object.prototype.hasOwnProperty,Xa={children:null,dangerouslySetInnerHTML:null,suppressContentEditableWarning:null,suppressHydrationWarning:null};function Ya(a,b){if(void 0===a)throw Error(q(152,C(b)||"Component"));}
+function Za(a,b,c){function d(d,g){var e=g.prototype&&g.prototype.isReactComponent,f=pa(g,b,c,e),x=[],h=!1,m={isMounted:function(){return!1},enqueueForceUpdate:function(){if(null===x)return null},enqueueReplaceState:function(a,c){h=!0;x=[c]},enqueueSetState:function(a,c){if(null===x)return null;x.push(c)}};if(e){if(e=new g(d.props,f,m),"function"===typeof g.getDerivedStateFromProps){var w=g.getDerivedStateFromProps.call(null,d.props,e.state);null!=w&&(e.state=k({},e.state,w))}}else if(O={},e=g(d.props,
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+h;x=null;h=!1;if(r&&1===m.length)e.state=m[0];else{w=r?m[0]:e.state;var y=!0;for(r=r?1:0;r<m.length;r++){var p=m[r];p="function"===typeof p?p.call(e,w,d.props,f):p;null!=p&&(y?(y=!1,w=k({},w,p)):k(w,p))}e.state=w}}else x=null;a=e.render();Ya(a,g);if("function"===typeof e.getChildContext&&(d=g.childContextTypes,"object"===typeof d)){var A=e.getChildContext();for(var T in A)if(!(T in d))throw Error(q(108,C(g)||"Unknown",T));}A&&(b=k({},b,A))}for(;l.isValidElement(a);){var f=a,g=f.type;if("function"!==
+typeof g)break;d(f,g)}return{child:a,context:b}}
+var $a=function(){function a(a,b){l.isValidElement(a)?a.type!==u?a=[a]:(a=a.props.children,a=l.isValidElement(a)?[a]:Z(a)):a=Z(a);a={type:null,domNamespace:Ja.html,children:a,childIndex:0,context:oa,footer:""};var c=F[0];if(0===c){var g=F;c=g.length;var d=2*c;if(!(65536>=d))throw Error(q(304));var h=new Uint16Array(d);h.set(g);F=h;F[0]=c+1;for(g=c;g<d-1;g++)F[g]=g+1;F[d-1]=0}else F[0]=F[c];this.threadID=c;this.stack=[a];this.exhausted=!1;this.currentSelectValue=null;this.previousWasTextNode=!1;this.makeStaticMarkup=
+b;this.suspenseDepth=0;this.contextIndex=-1;this.contextStack=[];this.contextValueStack=[]}var b=a.prototype;b.destroy=function(){if(!this.exhausted){this.exhausted=!0;this.clearProviders();var a=this.threadID;F[a]=F[0];F[0]=a}};b.pushProvider=function(a){var c=++this.contextIndex,b=a.type._context,g=this.threadID;E(b,g);var x=b[g];this.contextStack[c]=b;this.contextValueStack[c]=x;b[g]=a.props.value};b.popProvider=function(){var a=this.contextIndex,b=this.contextStack[a],f=this.contextValueStack[a];
+this.contextStack[a]=null;this.contextValueStack[a]=null;this.contextIndex--;b[this.threadID]=f};b.clearProviders=function(){for(var a=this.contextIndex;0<=a;a--)this.contextStack[a][this.threadID]=this.contextValueStack[a]};b.read=function(a){if(this.exhausted)return null;var b=X;X=this.threadID;var c=Qa.current;Qa.current=Ia;try{for(var g=[""],x=!1;g[0].length<a;){if(0===this.stack.length){this.exhausted=!0;var h=this.threadID;F[h]=F[0];F[0]=h;break}var e=this.stack[this.stack.length-1];if(x||e.childIndex>=
+e.children.length){var I=e.footer;""!==I&&(this.previousWasTextNode=!1);this.stack.pop();if("select"===e.type)this.currentSelectValue=null;else if(null!=e.type&&null!=e.type.type&&e.type.type.$$typeof===v)this.popProvider(e.type);else if(e.type===B){this.suspenseDepth--;var G=g.pop();if(x){x=!1;var n=e.fallbackFrame;if(!n)throw Error(q(303));this.stack.push(n);g[this.suspenseDepth]+="\x3c!--$!--\x3e";continue}else g[this.suspenseDepth]+=G}g[this.suspenseDepth]+=I}else{var m=e.children[e.childIndex++],
+w="";try{w+=this.render(m,e.context,e.domNamespace)}catch(r){if(null!=r&&"function"===typeof r.then)throw Error(q(294));throw r;}finally{}g.length<=this.suspenseDepth&&g.push("");g[this.suspenseDepth]+=w}}return g[0]}finally{Qa.current=c,X=b}};b.render=function(a,b,f){if("string"===typeof a||"number"===typeof a){f=""+a;if(""===f)return"";if(this.makeStaticMarkup)return N(f);if(this.previousWasTextNode)return"\x3c!-- --\x3e"+N(f);this.previousWasTextNode=!0;return N(f)}b=Za(a,b,this.threadID);a=b.child;
+b=b.context;if(null===a||!1===a)return"";if(!l.isValidElement(a)){if(null!=a&&null!=a.$$typeof){f=a.$$typeof;if(f===aa)throw Error(q(257));throw Error(q(258,f.toString()));}a=Z(a);this.stack.push({type:null,domNamespace:f,children:a,childIndex:0,context:b,footer:""});return""}var c=a.type;if("string"===typeof c)return this.renderDOM(a,b,f);switch(c){case ba:case ea:case ca:case ha:case u:return a=Z(a.props.children),this.stack.push({type:null,domNamespace:f,children:a,childIndex:0,context:b,footer:""}),
+"";case B:throw Error(q(294));}if("object"===typeof c&&null!==c)switch(c.$$typeof){case fa:O={};var d=c.render(a.props,a.ref);d=Da(c.render,a.props,d,a.ref);d=Z(d);this.stack.push({type:null,domNamespace:f,children:d,childIndex:0,context:b,footer:""});return"";case ia:return a=[l.createElement(c.type,k({ref:a.ref},a.props))],this.stack.push({type:null,domNamespace:f,children:a,childIndex:0,context:b,footer:""}),"";case v:return c=Z(a.props.children),f={type:a,domNamespace:f,children:c,childIndex:0,
+context:b,footer:""},this.pushProvider(a),this.stack.push(f),"";case da:c=a.type;d=a.props;var h=this.threadID;E(c,h);c=Z(d.children(c[h]));this.stack.push({type:a,domNamespace:f,children:c,childIndex:0,context:b,footer:""});return"";case la:throw Error(q(338));case ja:switch(c=a.type,na(c),c._status){case 1:return a=[l.createElement(c._result,k({ref:a.ref},a.props))],this.stack.push({type:null,domNamespace:f,children:a,childIndex:0,context:b,footer:""}),"";case 2:throw c._result;default:throw Error(q(295));
+}case ma:throw Error(q(343));}throw Error(q(130,null==c?c:typeof c,""));};b.renderDOM=function(a,b,f){var c=a.type.toLowerCase();f===Ja.html&&Ka(c);if(!Ta.hasOwnProperty(c)){if(!Sa.test(c))throw Error(q(65,c));Ta[c]=!0}var d=a.props;if("input"===c)d=k({type:void 0},d,{defaultChecked:void 0,defaultValue:void 0,value:null!=d.value?d.value:d.defaultValue,checked:null!=d.checked?d.checked:d.defaultChecked});else if("textarea"===c){var h=d.value;if(null==h){h=d.defaultValue;var e=d.children;if(null!=e){if(null!=
+h)throw Error(q(92));if(Array.isArray(e)){if(!(1>=e.length))throw Error(q(93));e=e[0]}h=""+e}null==h&&(h="")}d=k({},d,{value:void 0,children:""+h})}else if("select"===c)this.currentSelectValue=null!=d.value?d.value:d.defaultValue,d=k({},d,{value:void 0});else if("option"===c){e=this.currentSelectValue;var I=Va(d.children);if(null!=e){var G=null!=d.value?d.value+"":I;h=!1;if(Array.isArray(e))for(var n=0;n<e.length;n++){if(""+e[n]===G){h=!0;break}}else h=""+e===G;d=k({selected:void 0,children:void 0},
+d,{selected:h,children:I})}}if(h=d){if(Ma[c]&&(null!=h.children||null!=h.dangerouslySetInnerHTML))throw Error(q(137,c,""));if(null!=h.dangerouslySetInnerHTML){if(null!=h.children)throw Error(q(60));if(!("object"===typeof h.dangerouslySetInnerHTML&&"__html"in h.dangerouslySetInnerHTML))throw Error(q(61));}if(null!=h.style&&"object"!==typeof h.style)throw Error(q(62,""));}h=d;e=this.makeStaticMarkup;I=1===this.stack.length;G="<"+a.type;for(z in h)if(Wa.call(h,z)){var m=h[z];if(null!=m){if("style"===
+z){n=void 0;var w="",r="";for(n in m)if(m.hasOwnProperty(n)){var y=0===n.indexOf("--"),p=m[n];if(null!=p){if(y)var A=n;else if(A=n,Ua.hasOwnProperty(A))A=Ua[A];else{var T=A.replace(Oa,"-$1").toLowerCase().replace(Pa,"-ms-");A=Ua[A]=T}w+=r+A+":";r=n;y=null==p||"boolean"===typeof p||""===p?"":y||"number"!==typeof p||0===p||Y.hasOwnProperty(r)&&Y[r]?(""+p).trim():p+"px";w+=y;r=";"}}m=w||null}n=null;b:if(y=c,p=h,-1===y.indexOf("-"))y="string"===typeof p.is;else switch(y){case "annotation-xml":case "color-profile":case "font-face":case "font-face-src":case "font-face-uri":case "font-face-format":case "font-face-name":case "missing-glyph":y=
+!1;break b;default:y=!0}y?Xa.hasOwnProperty(z)||(n=z,n=ua(n)&&null!=m?n+'="'+(N(m)+'"'):""):n=ya(z,m);n&&(G+=" "+n)}}e||I&&(G+=' data-reactroot=""');var z=G;h="";La.hasOwnProperty(c)?z+="/>":(z+=">",h="</"+a.type+">");a:{e=d.dangerouslySetInnerHTML;if(null!=e){if(null!=e.__html){e=e.__html;break a}}else if(e=d.children,"string"===typeof e||"number"===typeof e){e=N(e);break a}e=null}null!=e?(d=[],Ra.hasOwnProperty(c)&&"\n"===e.charAt(0)&&(z+="\n"),z+=e):d=Z(d.children);a=a.type;f=null==f||"http://www.w3.org/1999/xhtml"===
+f?Ka(a):"http://www.w3.org/2000/svg"===f&&"foreignObject"===a?"http://www.w3.org/1999/xhtml":f;this.stack.push({domNamespace:f,type:c,children:d,childIndex:0,context:b,footer:h});this.previousWasTextNode=!1;return z};return a}(),ab={renderToString:function(a){a=new $a(a,!1);try{return a.read(Infinity)}finally{a.destroy()}},renderToStaticMarkup:function(a){a=new $a(a,!0);try{return a.read(Infinity)}finally{a.destroy()}},renderToNodeStream:function(){throw Error(q(207));},renderToStaticNodeStream:function(){throw Error(q(208));
+},version:"16.14.0"};module.exports=ab.default||ab;
diff --git a/igv_component/node_modules/react-dom/cjs/react-dom-server.node.development.js b/igv_component/node_modules/react-dom/cjs/react-dom-server.node.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..780fbd74bdd80db84528c5e87de51f9da78b3cfd
--- /dev/null
+++ b/igv_component/node_modules/react-dom/cjs/react-dom-server.node.development.js
@@ -0,0 +1,4085 @@
+/** @license React v16.14.0
+ * react-dom-server.node.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+var React = require('react');
+var _assign = require('object-assign');
+var checkPropTypes = require('prop-types/checkPropTypes');
+var stream = require('stream');
+
+var ReactVersion = '16.14.0';
+
+// Do not require this module directly! Use normal `invariant` calls with
+// template literal strings. The messages will be replaced with error codes
+// during build.
+function formatProdErrorMessage(code) {
+  var url = 'https://reactjs.org/docs/error-decoder.html?invariant=' + code;
+
+  for (var i = 1; i < arguments.length; i++) {
+    url += '&args[]=' + encodeURIComponent(arguments[i]);
+  }
+
+  return "Minified React error #" + code + "; visit " + url + " for the full message or " + 'use the non-minified dev environment for full errors and additional ' + 'helpful warnings.';
+}
+
+var ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED; // Prevent newer renderers from RTE when used with older react package versions.
+// Current owner and dispatcher used to share the same ref,
+// but PR #14548 split them out to better support the react-debug-tools package.
+
+if (!ReactSharedInternals.hasOwnProperty('ReactCurrentDispatcher')) {
+  ReactSharedInternals.ReactCurrentDispatcher = {
+    current: null
+  };
+}
+
+if (!ReactSharedInternals.hasOwnProperty('ReactCurrentBatchConfig')) {
+  ReactSharedInternals.ReactCurrentBatchConfig = {
+    suspense: null
+  };
+}
+
+// by calls to these methods by a Babel plugin.
+//
+// In PROD (or in packages without access to React internals),
+// they are left as they are instead.
+
+function warn(format) {
+  {
+    for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+      args[_key - 1] = arguments[_key];
+    }
+
+    printWarning('warn', format, args);
+  }
+}
+function error(format) {
+  {
+    for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+      args[_key2 - 1] = arguments[_key2];
+    }
+
+    printWarning('error', format, args);
+  }
+}
+
+function printWarning(level, format, args) {
+  // When changing this logic, you might want to also
+  // update consoleWithStackDev.www.js as well.
+  {
+    var hasExistingStack = args.length > 0 && typeof args[args.length - 1] === 'string' && args[args.length - 1].indexOf('\n    in') === 0;
+
+    if (!hasExistingStack) {
+      var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+      var stack = ReactDebugCurrentFrame.getStackAddendum();
+
+      if (stack !== '') {
+        format += '%s';
+        args = args.concat([stack]);
+      }
+    }
+
+    var argsWithFormat = args.map(function (item) {
+      return '' + item;
+    }); // Careful: RN currently depends on this prefix
+
+    argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it
+    // breaks IE9: https://github.com/facebook/react/issues/13610
+    // eslint-disable-next-line react-internal/no-production-logging
+
+    Function.prototype.apply.call(console[level], console, argsWithFormat);
+
+    try {
+      // --- Welcome to debugging React ---
+      // This error was thrown as a convenience so that you can use this stack
+      // to find the callsite that caused this warning to fire.
+      var argIndex = 0;
+      var message = 'Warning: ' + format.replace(/%s/g, function () {
+        return args[argIndex++];
+      });
+      throw new Error(message);
+    } catch (x) {}
+  }
+}
+
+// The Symbol used to tag the ReactElement-like types. If there is no native Symbol
+// nor polyfill, then a plain number is used for performance.
+var hasSymbol = typeof Symbol === 'function' && Symbol.for;
+var REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca;
+var REACT_FRAGMENT_TYPE = hasSymbol ? Symbol.for('react.fragment') : 0xeacb;
+var REACT_STRICT_MODE_TYPE = hasSymbol ? Symbol.for('react.strict_mode') : 0xeacc;
+var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for('react.profiler') : 0xead2;
+var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for('react.provider') : 0xeacd;
+var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for('react.context') : 0xeace; // TODO: We don't use AsyncMode or ConcurrentMode anymore. They were temporary
+var REACT_CONCURRENT_MODE_TYPE = hasSymbol ? Symbol.for('react.concurrent_mode') : 0xeacf;
+var REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for('react.forward_ref') : 0xead0;
+var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for('react.suspense') : 0xead1;
+var REACT_SUSPENSE_LIST_TYPE = hasSymbol ? Symbol.for('react.suspense_list') : 0xead8;
+var REACT_MEMO_TYPE = hasSymbol ? Symbol.for('react.memo') : 0xead3;
+var REACT_LAZY_TYPE = hasSymbol ? Symbol.for('react.lazy') : 0xead4;
+var REACT_BLOCK_TYPE = hasSymbol ? Symbol.for('react.block') : 0xead9;
+var REACT_FUNDAMENTAL_TYPE = hasSymbol ? Symbol.for('react.fundamental') : 0xead5;
+var REACT_SCOPE_TYPE = hasSymbol ? Symbol.for('react.scope') : 0xead7;
+
+var Uninitialized = -1;
+var Pending = 0;
+var Resolved = 1;
+var Rejected = 2;
+function refineResolvedLazyComponent(lazyComponent) {
+  return lazyComponent._status === Resolved ? lazyComponent._result : null;
+}
+function initializeLazyComponentType(lazyComponent) {
+  if (lazyComponent._status === Uninitialized) {
+    lazyComponent._status = Pending;
+    var ctor = lazyComponent._ctor;
+    var thenable = ctor();
+    lazyComponent._result = thenable;
+    thenable.then(function (moduleObject) {
+      if (lazyComponent._status === Pending) {
+        var defaultExport = moduleObject.default;
+
+        {
+          if (defaultExport === undefined) {
+            error('lazy: Expected the result of a dynamic import() call. ' + 'Instead received: %s\n\nYour code should look like: \n  ' + "const MyComponent = lazy(() => import('./MyComponent'))", moduleObject);
+          }
+        }
+
+        lazyComponent._status = Resolved;
+        lazyComponent._result = defaultExport;
+      }
+    }, function (error) {
+      if (lazyComponent._status === Pending) {
+        lazyComponent._status = Rejected;
+        lazyComponent._result = error;
+      }
+    });
+  }
+}
+
+function getWrappedName(outerType, innerType, wrapperName) {
+  var functionName = innerType.displayName || innerType.name || '';
+  return outerType.displayName || (functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName);
+}
+
+function getComponentName(type) {
+  if (type == null) {
+    // Host root, text node or just invalid type.
+    return null;
+  }
+
+  {
+    if (typeof type.tag === 'number') {
+      error('Received an unexpected object in getComponentName(). ' + 'This is likely a bug in React. Please file an issue.');
+    }
+  }
+
+  if (typeof type === 'function') {
+    return type.displayName || type.name || null;
+  }
+
+  if (typeof type === 'string') {
+    return type;
+  }
+
+  switch (type) {
+    case REACT_FRAGMENT_TYPE:
+      return 'Fragment';
+
+    case REACT_PORTAL_TYPE:
+      return 'Portal';
+
+    case REACT_PROFILER_TYPE:
+      return "Profiler";
+
+    case REACT_STRICT_MODE_TYPE:
+      return 'StrictMode';
+
+    case REACT_SUSPENSE_TYPE:
+      return 'Suspense';
+
+    case REACT_SUSPENSE_LIST_TYPE:
+      return 'SuspenseList';
+  }
+
+  if (typeof type === 'object') {
+    switch (type.$$typeof) {
+      case REACT_CONTEXT_TYPE:
+        return 'Context.Consumer';
+
+      case REACT_PROVIDER_TYPE:
+        return 'Context.Provider';
+
+      case REACT_FORWARD_REF_TYPE:
+        return getWrappedName(type, type.render, 'ForwardRef');
+
+      case REACT_MEMO_TYPE:
+        return getComponentName(type.type);
+
+      case REACT_BLOCK_TYPE:
+        return getComponentName(type.render);
+
+      case REACT_LAZY_TYPE:
+        {
+          var thenable = type;
+          var resolvedThenable = refineResolvedLazyComponent(thenable);
+
+          if (resolvedThenable) {
+            return getComponentName(resolvedThenable);
+          }
+
+          break;
+        }
+    }
+  }
+
+  return null;
+}
+
+var BEFORE_SLASH_RE = /^(.*)[\\\/]/;
+function describeComponentFrame (name, source, ownerName) {
+  var sourceInfo = '';
+
+  if (source) {
+    var path = source.fileName;
+    var fileName = path.replace(BEFORE_SLASH_RE, '');
+
+    {
+      // In DEV, include code for a common special case:
+      // prefer "folder/index.js" instead of just "index.js".
+      if (/^index\./.test(fileName)) {
+        var match = path.match(BEFORE_SLASH_RE);
+
+        if (match) {
+          var pathBeforeSlash = match[1];
+
+          if (pathBeforeSlash) {
+            var folderName = pathBeforeSlash.replace(BEFORE_SLASH_RE, '');
+            fileName = folderName + '/' + fileName;
+          }
+        }
+      }
+    }
+
+    sourceInfo = ' (at ' + fileName + ':' + source.lineNumber + ')';
+  } else if (ownerName) {
+    sourceInfo = ' (created by ' + ownerName + ')';
+  }
+
+  return '\n    in ' + (name || 'Unknown') + sourceInfo;
+}
+
+var enableSuspenseServerRenderer = false;
+
+var enableDeprecatedFlareAPI = false; // Experimental Host Component support.
+
+var ReactDebugCurrentFrame;
+var didWarnAboutInvalidateContextType;
+
+{
+  ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+  didWarnAboutInvalidateContextType = new Set();
+}
+
+var emptyObject = {};
+
+{
+  Object.freeze(emptyObject);
+}
+
+function maskContext(type, context) {
+  var contextTypes = type.contextTypes;
+
+  if (!contextTypes) {
+    return emptyObject;
+  }
+
+  var maskedContext = {};
+
+  for (var contextName in contextTypes) {
+    maskedContext[contextName] = context[contextName];
+  }
+
+  return maskedContext;
+}
+
+function checkContextTypes(typeSpecs, values, location) {
+  {
+    checkPropTypes(typeSpecs, values, location, 'Component', ReactDebugCurrentFrame.getCurrentStack);
+  }
+}
+
+function validateContextBounds(context, threadID) {
+  // If we don't have enough slots in this context to store this threadID,
+  // fill it in without leaving any holes to ensure that the VM optimizes
+  // this as non-holey index properties.
+  // (Note: If `react` package is < 16.6, _threadCount is undefined.)
+  for (var i = context._threadCount | 0; i <= threadID; i++) {
+    // We assume that this is the same as the defaultValue which might not be
+    // true if we're rendering inside a secondary renderer but they are
+    // secondary because these use cases are very rare.
+    context[i] = context._currentValue2;
+    context._threadCount = i + 1;
+  }
+}
+function processContext(type, context, threadID, isClass) {
+  if (isClass) {
+    var contextType = type.contextType;
+
+    {
+      if ('contextType' in type) {
+        var isValid = // Allow null for conditional declaration
+        contextType === null || contextType !== undefined && contextType.$$typeof === REACT_CONTEXT_TYPE && contextType._context === undefined; // Not a <Context.Consumer>
+
+        if (!isValid && !didWarnAboutInvalidateContextType.has(type)) {
+          didWarnAboutInvalidateContextType.add(type);
+          var addendum = '';
+
+          if (contextType === undefined) {
+            addendum = ' However, it is set to undefined. ' + 'This can be caused by a typo or by mixing up named and default imports. ' + 'This can also happen due to a circular dependency, so ' + 'try moving the createContext() call to a separate file.';
+          } else if (typeof contextType !== 'object') {
+            addendum = ' However, it is set to a ' + typeof contextType + '.';
+          } else if (contextType.$$typeof === REACT_PROVIDER_TYPE) {
+            addendum = ' Did you accidentally pass the Context.Provider instead?';
+          } else if (contextType._context !== undefined) {
+            // <Context.Consumer>
+            addendum = ' Did you accidentally pass the Context.Consumer instead?';
+          } else {
+            addendum = ' However, it is set to an object with keys {' + Object.keys(contextType).join(', ') + '}.';
+          }
+
+          error('%s defines an invalid contextType. ' + 'contextType should point to the Context object returned by React.createContext().%s', getComponentName(type) || 'Component', addendum);
+        }
+      }
+    }
+
+    if (typeof contextType === 'object' && contextType !== null) {
+      validateContextBounds(contextType, threadID);
+      return contextType[threadID];
+    }
+
+    {
+      var maskedContext = maskContext(type, context);
+
+      {
+        if (type.contextTypes) {
+          checkContextTypes(type.contextTypes, maskedContext, 'context');
+        }
+      }
+
+      return maskedContext;
+    }
+  } else {
+    {
+      var _maskedContext = maskContext(type, context);
+
+      {
+        if (type.contextTypes) {
+          checkContextTypes(type.contextTypes, _maskedContext, 'context');
+        }
+      }
+
+      return _maskedContext;
+    }
+  }
+}
+
+var nextAvailableThreadIDs = new Uint16Array(16);
+
+for (var i = 0; i < 15; i++) {
+  nextAvailableThreadIDs[i] = i + 1;
+}
+
+nextAvailableThreadIDs[15] = 0;
+
+function growThreadCountAndReturnNextAvailable() {
+  var oldArray = nextAvailableThreadIDs;
+  var oldSize = oldArray.length;
+  var newSize = oldSize * 2;
+
+  if (!(newSize <= 0x10000)) {
+    {
+      throw Error( "Maximum number of concurrent React renderers exceeded. This can happen if you are not properly destroying the Readable provided by React. Ensure that you call .destroy() on it if you no longer want to read from it, and did not read to the end. If you use .pipe() this should be automatic." );
+    }
+  }
+
+  var newArray = new Uint16Array(newSize);
+  newArray.set(oldArray);
+  nextAvailableThreadIDs = newArray;
+  nextAvailableThreadIDs[0] = oldSize + 1;
+
+  for (var _i = oldSize; _i < newSize - 1; _i++) {
+    nextAvailableThreadIDs[_i] = _i + 1;
+  }
+
+  nextAvailableThreadIDs[newSize - 1] = 0;
+  return oldSize;
+}
+
+function allocThreadID() {
+  var nextID = nextAvailableThreadIDs[0];
+
+  if (nextID === 0) {
+    return growThreadCountAndReturnNextAvailable();
+  }
+
+  nextAvailableThreadIDs[0] = nextAvailableThreadIDs[nextID];
+  return nextID;
+}
+function freeThreadID(id) {
+  nextAvailableThreadIDs[id] = nextAvailableThreadIDs[0];
+  nextAvailableThreadIDs[0] = id;
+}
+
+// A reserved attribute.
+// It is handled by React separately and shouldn't be written to the DOM.
+var RESERVED = 0; // A simple string attribute.
+// Attributes that aren't in the whitelist are presumed to have this type.
+
+var STRING = 1; // A string attribute that accepts booleans in React. In HTML, these are called
+// "enumerated" attributes with "true" and "false" as possible values.
+// When true, it should be set to a "true" string.
+// When false, it should be set to a "false" string.
+
+var BOOLEANISH_STRING = 2; // A real boolean attribute.
+// When true, it should be present (set either to an empty string or its name).
+// When false, it should be omitted.
+
+var BOOLEAN = 3; // An attribute that can be used as a flag as well as with a value.
+// When true, it should be present (set either to an empty string or its name).
+// When false, it should be omitted.
+// For any other value, should be present with that value.
+
+var OVERLOADED_BOOLEAN = 4; // An attribute that must be numeric or parse as a numeric.
+// When falsy, it should be removed.
+
+var NUMERIC = 5; // An attribute that must be positive numeric or parse as a positive numeric.
+// When falsy, it should be removed.
+
+var POSITIVE_NUMERIC = 6;
+
+/* eslint-disable max-len */
+var ATTRIBUTE_NAME_START_CHAR = ":A-Z_a-z\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u02FF\\u0370-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD";
+/* eslint-enable max-len */
+
+var ATTRIBUTE_NAME_CHAR = ATTRIBUTE_NAME_START_CHAR + "\\-.0-9\\u00B7\\u0300-\\u036F\\u203F-\\u2040";
+var ROOT_ATTRIBUTE_NAME = 'data-reactroot';
+var VALID_ATTRIBUTE_NAME_REGEX = new RegExp('^[' + ATTRIBUTE_NAME_START_CHAR + '][' + ATTRIBUTE_NAME_CHAR + ']*$');
+var hasOwnProperty = Object.prototype.hasOwnProperty;
+var illegalAttributeNameCache = {};
+var validatedAttributeNameCache = {};
+function isAttributeNameSafe(attributeName) {
+  if (hasOwnProperty.call(validatedAttributeNameCache, attributeName)) {
+    return true;
+  }
+
+  if (hasOwnProperty.call(illegalAttributeNameCache, attributeName)) {
+    return false;
+  }
+
+  if (VALID_ATTRIBUTE_NAME_REGEX.test(attributeName)) {
+    validatedAttributeNameCache[attributeName] = true;
+    return true;
+  }
+
+  illegalAttributeNameCache[attributeName] = true;
+
+  {
+    error('Invalid attribute name: `%s`', attributeName);
+  }
+
+  return false;
+}
+function shouldIgnoreAttribute(name, propertyInfo, isCustomComponentTag) {
+  if (propertyInfo !== null) {
+    return propertyInfo.type === RESERVED;
+  }
+
+  if (isCustomComponentTag) {
+    return false;
+  }
+
+  if (name.length > 2 && (name[0] === 'o' || name[0] === 'O') && (name[1] === 'n' || name[1] === 'N')) {
+    return true;
+  }
+
+  return false;
+}
+function shouldRemoveAttributeWithWarning(name, value, propertyInfo, isCustomComponentTag) {
+  if (propertyInfo !== null && propertyInfo.type === RESERVED) {
+    return false;
+  }
+
+  switch (typeof value) {
+    case 'function': // $FlowIssue symbol is perfectly valid here
+
+    case 'symbol':
+      // eslint-disable-line
+      return true;
+
+    case 'boolean':
+      {
+        if (isCustomComponentTag) {
+          return false;
+        }
+
+        if (propertyInfo !== null) {
+          return !propertyInfo.acceptsBooleans;
+        } else {
+          var prefix = name.toLowerCase().slice(0, 5);
+          return prefix !== 'data-' && prefix !== 'aria-';
+        }
+      }
+
+    default:
+      return false;
+  }
+}
+function shouldRemoveAttribute(name, value, propertyInfo, isCustomComponentTag) {
+  if (value === null || typeof value === 'undefined') {
+    return true;
+  }
+
+  if (shouldRemoveAttributeWithWarning(name, value, propertyInfo, isCustomComponentTag)) {
+    return true;
+  }
+
+  if (isCustomComponentTag) {
+    return false;
+  }
+
+  if (propertyInfo !== null) {
+    switch (propertyInfo.type) {
+      case BOOLEAN:
+        return !value;
+
+      case OVERLOADED_BOOLEAN:
+        return value === false;
+
+      case NUMERIC:
+        return isNaN(value);
+
+      case POSITIVE_NUMERIC:
+        return isNaN(value) || value < 1;
+    }
+  }
+
+  return false;
+}
+function getPropertyInfo(name) {
+  return properties.hasOwnProperty(name) ? properties[name] : null;
+}
+
+function PropertyInfoRecord(name, type, mustUseProperty, attributeName, attributeNamespace, sanitizeURL) {
+  this.acceptsBooleans = type === BOOLEANISH_STRING || type === BOOLEAN || type === OVERLOADED_BOOLEAN;
+  this.attributeName = attributeName;
+  this.attributeNamespace = attributeNamespace;
+  this.mustUseProperty = mustUseProperty;
+  this.propertyName = name;
+  this.type = type;
+  this.sanitizeURL = sanitizeURL;
+} // When adding attributes to this list, be sure to also add them to
+// the `possibleStandardNames` module to ensure casing and incorrect
+// name warnings.
+
+
+var properties = {}; // These props are reserved by React. They shouldn't be written to the DOM.
+
+var reservedProps = ['children', 'dangerouslySetInnerHTML', // TODO: This prevents the assignment of defaultValue to regular
+// elements (not just inputs). Now that ReactDOMInput assigns to the
+// defaultValue property -- do we need this?
+'defaultValue', 'defaultChecked', 'innerHTML', 'suppressContentEditableWarning', 'suppressHydrationWarning', 'style'];
+
+reservedProps.forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, RESERVED, false, // mustUseProperty
+  name, // attributeName
+  null, // attributeNamespace
+  false);
+}); // A few React string attributes have a different name.
+// This is a mapping from React prop names to the attribute names.
+
+[['acceptCharset', 'accept-charset'], ['className', 'class'], ['htmlFor', 'for'], ['httpEquiv', 'http-equiv']].forEach(function (_ref) {
+  var name = _ref[0],
+      attributeName = _ref[1];
+  properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+  attributeName, // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are "enumerated" HTML attributes that accept "true" and "false".
+// In React, we let users pass `true` and `false` even though technically
+// these aren't boolean attributes (they are coerced to strings).
+
+['contentEditable', 'draggable', 'spellCheck', 'value'].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, BOOLEANISH_STRING, false, // mustUseProperty
+  name.toLowerCase(), // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are "enumerated" SVG attributes that accept "true" and "false".
+// In React, we let users pass `true` and `false` even though technically
+// these aren't boolean attributes (they are coerced to strings).
+// Since these are SVG attributes, their attribute names are case-sensitive.
+
+['autoReverse', 'externalResourcesRequired', 'focusable', 'preserveAlpha'].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, BOOLEANISH_STRING, false, // mustUseProperty
+  name, // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are HTML boolean attributes.
+
+['allowFullScreen', 'async', // Note: there is a special case that prevents it from being written to the DOM
+// on the client side because the browsers are inconsistent. Instead we call focus().
+'autoFocus', 'autoPlay', 'controls', 'default', 'defer', 'disabled', 'disablePictureInPicture', 'formNoValidate', 'hidden', 'loop', 'noModule', 'noValidate', 'open', 'playsInline', 'readOnly', 'required', 'reversed', 'scoped', 'seamless', // Microdata
+'itemScope'].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, BOOLEAN, false, // mustUseProperty
+  name.toLowerCase(), // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are the few React props that we set as DOM properties
+// rather than attributes. These are all booleans.
+
+['checked', // Note: `option.selected` is not updated if `select.multiple` is
+// disabled with `removeAttribute`. We have special logic for handling this.
+'multiple', 'muted', 'selected' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, BOOLEAN, true, // mustUseProperty
+  name, // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are HTML attributes that are "overloaded booleans": they behave like
+// booleans, but can also accept a string value.
+
+['capture', 'download' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, OVERLOADED_BOOLEAN, false, // mustUseProperty
+  name, // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are HTML attributes that must be positive numbers.
+
+['cols', 'rows', 'size', 'span' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, POSITIVE_NUMERIC, false, // mustUseProperty
+  name, // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are HTML attributes that must be numbers.
+
+['rowSpan', 'start'].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, NUMERIC, false, // mustUseProperty
+  name.toLowerCase(), // attributeName
+  null, // attributeNamespace
+  false);
+});
+var CAMELIZE = /[\-\:]([a-z])/g;
+
+var capitalize = function (token) {
+  return token[1].toUpperCase();
+}; // This is a list of all SVG attributes that need special casing, namespacing,
+// or boolean value assignment. Regular attributes that just accept strings
+// and have the same names are omitted, just like in the HTML whitelist.
+// Some of these attributes can be hard to find. This list was created by
+// scraping the MDN documentation.
+
+
+['accent-height', 'alignment-baseline', 'arabic-form', 'baseline-shift', 'cap-height', 'clip-path', 'clip-rule', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'dominant-baseline', 'enable-background', 'fill-opacity', 'fill-rule', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'glyph-name', 'glyph-orientation-horizontal', 'glyph-orientation-vertical', 'horiz-adv-x', 'horiz-origin-x', 'image-rendering', 'letter-spacing', 'lighting-color', 'marker-end', 'marker-mid', 'marker-start', 'overline-position', 'overline-thickness', 'paint-order', 'panose-1', 'pointer-events', 'rendering-intent', 'shape-rendering', 'stop-color', 'stop-opacity', 'strikethrough-position', 'strikethrough-thickness', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'text-anchor', 'text-decoration', 'text-rendering', 'underline-position', 'underline-thickness', 'unicode-bidi', 'unicode-range', 'units-per-em', 'v-alphabetic', 'v-hanging', 'v-ideographic', 'v-mathematical', 'vector-effect', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'word-spacing', 'writing-mode', 'xmlns:xlink', 'x-height' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (attributeName) {
+  var name = attributeName.replace(CAMELIZE, capitalize);
+  properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+  attributeName, null, // attributeNamespace
+  false);
+}); // String SVG attributes with the xlink namespace.
+
+['xlink:actuate', 'xlink:arcrole', 'xlink:role', 'xlink:show', 'xlink:title', 'xlink:type' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (attributeName) {
+  var name = attributeName.replace(CAMELIZE, capitalize);
+  properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+  attributeName, 'http://www.w3.org/1999/xlink', false);
+}); // String SVG attributes with the xml namespace.
+
+['xml:base', 'xml:lang', 'xml:space' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (attributeName) {
+  var name = attributeName.replace(CAMELIZE, capitalize);
+  properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+  attributeName, 'http://www.w3.org/XML/1998/namespace', false);
+}); // These attribute exists both in HTML and SVG.
+// The attribute name is case-sensitive in SVG so we can't just use
+// the React name like we do for attributes that exist only in HTML.
+
+['tabIndex', 'crossOrigin'].forEach(function (attributeName) {
+  properties[attributeName] = new PropertyInfoRecord(attributeName, STRING, false, // mustUseProperty
+  attributeName.toLowerCase(), // attributeName
+  null, // attributeNamespace
+  false);
+}); // These attributes accept URLs. These must not allow javascript: URLS.
+// These will also need to accept Trusted Types object in the future.
+
+var xlinkHref = 'xlinkHref';
+properties[xlinkHref] = new PropertyInfoRecord('xlinkHref', STRING, false, // mustUseProperty
+'xlink:href', 'http://www.w3.org/1999/xlink', true);
+['src', 'href', 'action', 'formAction'].forEach(function (attributeName) {
+  properties[attributeName] = new PropertyInfoRecord(attributeName, STRING, false, // mustUseProperty
+  attributeName.toLowerCase(), // attributeName
+  null, // attributeNamespace
+  true);
+});
+
+var ReactDebugCurrentFrame$1 = null;
+
+{
+  ReactDebugCurrentFrame$1 = ReactSharedInternals.ReactDebugCurrentFrame;
+} // A javascript: URL can contain leading C0 control or \u0020 SPACE,
+// and any newline or tab are filtered out as if they're not part of the URL.
+// https://url.spec.whatwg.org/#url-parsing
+// Tab or newline are defined as \r\n\t:
+// https://infra.spec.whatwg.org/#ascii-tab-or-newline
+// A C0 control is a code point in the range \u0000 NULL to \u001F
+// INFORMATION SEPARATOR ONE, inclusive:
+// https://infra.spec.whatwg.org/#c0-control-or-space
+
+/* eslint-disable max-len */
+
+
+var isJavaScriptProtocol = /^[\u0000-\u001F ]*j[\r\n\t]*a[\r\n\t]*v[\r\n\t]*a[\r\n\t]*s[\r\n\t]*c[\r\n\t]*r[\r\n\t]*i[\r\n\t]*p[\r\n\t]*t[\r\n\t]*\:/i;
+var didWarn = false;
+
+function sanitizeURL(url) {
+  {
+    if (!didWarn && isJavaScriptProtocol.test(url)) {
+      didWarn = true;
+
+      error('A future version of React will block javascript: URLs as a security precaution. ' + 'Use event handlers instead if you can. If you need to generate unsafe HTML try ' + 'using dangerouslySetInnerHTML instead. React was passed %s.', JSON.stringify(url));
+    }
+  }
+}
+
+// code copied and modified from escape-html
+
+/**
+ * Module variables.
+ * @private
+ */
+var matchHtmlRegExp = /["'&<>]/;
+/**
+ * Escapes special characters and HTML entities in a given html string.
+ *
+ * @param  {string} string HTML string to escape for later insertion
+ * @return {string}
+ * @public
+ */
+
+function escapeHtml(string) {
+  var str = '' + string;
+  var match = matchHtmlRegExp.exec(str);
+
+  if (!match) {
+    return str;
+  }
+
+  var escape;
+  var html = '';
+  var index;
+  var lastIndex = 0;
+
+  for (index = match.index; index < str.length; index++) {
+    switch (str.charCodeAt(index)) {
+      case 34:
+        // "
+        escape = '&quot;';
+        break;
+
+      case 38:
+        // &
+        escape = '&amp;';
+        break;
+
+      case 39:
+        // '
+        escape = '&#x27;'; // modified from escape-html; used to be '&#39'
+
+        break;
+
+      case 60:
+        // <
+        escape = '&lt;';
+        break;
+
+      case 62:
+        // >
+        escape = '&gt;';
+        break;
+
+      default:
+        continue;
+    }
+
+    if (lastIndex !== index) {
+      html += str.substring(lastIndex, index);
+    }
+
+    lastIndex = index + 1;
+    html += escape;
+  }
+
+  return lastIndex !== index ? html + str.substring(lastIndex, index) : html;
+} // end code copied and modified from escape-html
+
+/**
+ * Escapes text to prevent scripting attacks.
+ *
+ * @param {*} text Text value to escape.
+ * @return {string} An escaped string.
+ */
+
+
+function escapeTextForBrowser(text) {
+  if (typeof text === 'boolean' || typeof text === 'number') {
+    // this shortcircuit helps perf for types that we know will never have
+    // special characters, especially given that this function is used often
+    // for numeric dom ids.
+    return '' + text;
+  }
+
+  return escapeHtml(text);
+}
+
+/**
+ * Escapes attribute value to prevent scripting attacks.
+ *
+ * @param {*} value Value to escape.
+ * @return {string} An escaped string.
+ */
+
+function quoteAttributeValueForBrowser(value) {
+  return '"' + escapeTextForBrowser(value) + '"';
+}
+
+function createMarkupForRoot() {
+  return ROOT_ATTRIBUTE_NAME + '=""';
+}
+/**
+ * Creates markup for a property.
+ *
+ * @param {string} name
+ * @param {*} value
+ * @return {?string} Markup string, or null if the property was invalid.
+ */
+
+function createMarkupForProperty(name, value) {
+  var propertyInfo = getPropertyInfo(name);
+
+  if (name !== 'style' && shouldIgnoreAttribute(name, propertyInfo, false)) {
+    return '';
+  }
+
+  if (shouldRemoveAttribute(name, value, propertyInfo, false)) {
+    return '';
+  }
+
+  if (propertyInfo !== null) {
+    var attributeName = propertyInfo.attributeName;
+    var type = propertyInfo.type;
+
+    if (type === BOOLEAN || type === OVERLOADED_BOOLEAN && value === true) {
+      return attributeName + '=""';
+    } else {
+      if (propertyInfo.sanitizeURL) {
+        value = '' + value;
+        sanitizeURL(value);
+      }
+
+      return attributeName + '=' + quoteAttributeValueForBrowser(value);
+    }
+  } else if (isAttributeNameSafe(name)) {
+    return name + '=' + quoteAttributeValueForBrowser(value);
+  }
+
+  return '';
+}
+/**
+ * Creates markup for a custom property.
+ *
+ * @param {string} name
+ * @param {*} value
+ * @return {string} Markup string, or empty string if the property was invalid.
+ */
+
+function createMarkupForCustomAttribute(name, value) {
+  if (!isAttributeNameSafe(name) || value == null) {
+    return '';
+  }
+
+  return name + '=' + quoteAttributeValueForBrowser(value);
+}
+
+/**
+ * inlined Object.is polyfill to avoid requiring consumers ship their own
+ * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
+ */
+function is(x, y) {
+  return x === y && (x !== 0 || 1 / x === 1 / y) || x !== x && y !== y // eslint-disable-line no-self-compare
+  ;
+}
+
+var objectIs = typeof Object.is === 'function' ? Object.is : is;
+
+var currentlyRenderingComponent = null;
+var firstWorkInProgressHook = null;
+var workInProgressHook = null; // Whether the work-in-progress hook is a re-rendered hook
+
+var isReRender = false; // Whether an update was scheduled during the currently executing render pass.
+
+var didScheduleRenderPhaseUpdate = false; // Lazily created map of render-phase updates
+
+var renderPhaseUpdates = null; // Counter to prevent infinite loops.
+
+var numberOfReRenders = 0;
+var RE_RENDER_LIMIT = 25;
+var isInHookUserCodeInDev = false; // In DEV, this is the name of the currently executing primitive hook
+
+var currentHookNameInDev;
+
+function resolveCurrentlyRenderingComponent() {
+  if (!(currentlyRenderingComponent !== null)) {
+    {
+      throw Error( "Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons:\n1. You might have mismatching versions of React and the renderer (such as React DOM)\n2. You might be breaking the Rules of Hooks\n3. You might have more than one copy of React in the same app\nSee https://fb.me/react-invalid-hook-call for tips about how to debug and fix this problem." );
+    }
+  }
+
+  {
+    if (isInHookUserCodeInDev) {
+      error('Do not call Hooks inside useEffect(...), useMemo(...), or other built-in Hooks. ' + 'You can only call Hooks at the top level of your React function. ' + 'For more information, see ' + 'https://fb.me/rules-of-hooks');
+    }
+  }
+
+  return currentlyRenderingComponent;
+}
+
+function areHookInputsEqual(nextDeps, prevDeps) {
+  if (prevDeps === null) {
+    {
+      error('%s received a final argument during this render, but not during ' + 'the previous render. Even though the final argument is optional, ' + 'its type cannot change between renders.', currentHookNameInDev);
+    }
+
+    return false;
+  }
+
+  {
+    // Don't bother comparing lengths in prod because these arrays should be
+    // passed inline.
+    if (nextDeps.length !== prevDeps.length) {
+      error('The final argument passed to %s changed size between renders. The ' + 'order and size of this array must remain constant.\n\n' + 'Previous: %s\n' + 'Incoming: %s', currentHookNameInDev, "[" + nextDeps.join(', ') + "]", "[" + prevDeps.join(', ') + "]");
+    }
+  }
+
+  for (var i = 0; i < prevDeps.length && i < nextDeps.length; i++) {
+    if (objectIs(nextDeps[i], prevDeps[i])) {
+      continue;
+    }
+
+    return false;
+  }
+
+  return true;
+}
+
+function createHook() {
+  if (numberOfReRenders > 0) {
+    {
+      {
+        throw Error( "Rendered more hooks than during the previous render" );
+      }
+    }
+  }
+
+  return {
+    memoizedState: null,
+    queue: null,
+    next: null
+  };
+}
+
+function createWorkInProgressHook() {
+  if (workInProgressHook === null) {
+    // This is the first hook in the list
+    if (firstWorkInProgressHook === null) {
+      isReRender = false;
+      firstWorkInProgressHook = workInProgressHook = createHook();
+    } else {
+      // There's already a work-in-progress. Reuse it.
+      isReRender = true;
+      workInProgressHook = firstWorkInProgressHook;
+    }
+  } else {
+    if (workInProgressHook.next === null) {
+      isReRender = false; // Append to the end of the list
+
+      workInProgressHook = workInProgressHook.next = createHook();
+    } else {
+      // There's already a work-in-progress. Reuse it.
+      isReRender = true;
+      workInProgressHook = workInProgressHook.next;
+    }
+  }
+
+  return workInProgressHook;
+}
+
+function prepareToUseHooks(componentIdentity) {
+  currentlyRenderingComponent = componentIdentity;
+
+  {
+    isInHookUserCodeInDev = false;
+  } // The following should have already been reset
+  // didScheduleRenderPhaseUpdate = false;
+  // firstWorkInProgressHook = null;
+  // numberOfReRenders = 0;
+  // renderPhaseUpdates = null;
+  // workInProgressHook = null;
+
+}
+function finishHooks(Component, props, children, refOrContext) {
+  // This must be called after every function component to prevent hooks from
+  // being used in classes.
+  while (didScheduleRenderPhaseUpdate) {
+    // Updates were scheduled during the render phase. They are stored in
+    // the `renderPhaseUpdates` map. Call the component again, reusing the
+    // work-in-progress hooks and applying the additional updates on top. Keep
+    // restarting until no more updates are scheduled.
+    didScheduleRenderPhaseUpdate = false;
+    numberOfReRenders += 1; // Start over from the beginning of the list
+
+    workInProgressHook = null;
+    children = Component(props, refOrContext);
+  }
+
+  currentlyRenderingComponent = null;
+  firstWorkInProgressHook = null;
+  numberOfReRenders = 0;
+  renderPhaseUpdates = null;
+  workInProgressHook = null;
+
+  {
+    isInHookUserCodeInDev = false;
+  } // These were reset above
+  // currentlyRenderingComponent = null;
+  // didScheduleRenderPhaseUpdate = false;
+  // firstWorkInProgressHook = null;
+  // numberOfReRenders = 0;
+  // renderPhaseUpdates = null;
+  // workInProgressHook = null;
+
+
+  return children;
+}
+
+function readContext(context, observedBits) {
+  var threadID = currentThreadID;
+  validateContextBounds(context, threadID);
+
+  {
+    if (isInHookUserCodeInDev) {
+      error('Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().');
+    }
+  }
+
+  return context[threadID];
+}
+
+function useContext(context, observedBits) {
+  {
+    currentHookNameInDev = 'useContext';
+  }
+
+  resolveCurrentlyRenderingComponent();
+  var threadID = currentThreadID;
+  validateContextBounds(context, threadID);
+  return context[threadID];
+}
+
+function basicStateReducer(state, action) {
+  // $FlowFixMe: Flow doesn't like mixed types
+  return typeof action === 'function' ? action(state) : action;
+}
+
+function useState(initialState) {
+  {
+    currentHookNameInDev = 'useState';
+  }
+
+  return useReducer(basicStateReducer, // useReducer has a special case to support lazy useState initializers
+  initialState);
+}
+function useReducer(reducer, initialArg, init) {
+  {
+    if (reducer !== basicStateReducer) {
+      currentHookNameInDev = 'useReducer';
+    }
+  }
+
+  currentlyRenderingComponent = resolveCurrentlyRenderingComponent();
+  workInProgressHook = createWorkInProgressHook();
+
+  if (isReRender) {
+    // This is a re-render. Apply the new render phase updates to the previous
+    // current hook.
+    var queue = workInProgressHook.queue;
+    var dispatch = queue.dispatch;
+
+    if (renderPhaseUpdates !== null) {
+      // Render phase updates are stored in a map of queue -> linked list
+      var firstRenderPhaseUpdate = renderPhaseUpdates.get(queue);
+
+      if (firstRenderPhaseUpdate !== undefined) {
+        renderPhaseUpdates.delete(queue);
+        var newState = workInProgressHook.memoizedState;
+        var update = firstRenderPhaseUpdate;
+
+        do {
+          // Process this render phase update. We don't have to check the
+          // priority because it will always be the same as the current
+          // render's.
+          var action = update.action;
+
+          {
+            isInHookUserCodeInDev = true;
+          }
+
+          newState = reducer(newState, action);
+
+          {
+            isInHookUserCodeInDev = false;
+          }
+
+          update = update.next;
+        } while (update !== null);
+
+        workInProgressHook.memoizedState = newState;
+        return [newState, dispatch];
+      }
+    }
+
+    return [workInProgressHook.memoizedState, dispatch];
+  } else {
+    {
+      isInHookUserCodeInDev = true;
+    }
+
+    var initialState;
+
+    if (reducer === basicStateReducer) {
+      // Special case for `useState`.
+      initialState = typeof initialArg === 'function' ? initialArg() : initialArg;
+    } else {
+      initialState = init !== undefined ? init(initialArg) : initialArg;
+    }
+
+    {
+      isInHookUserCodeInDev = false;
+    }
+
+    workInProgressHook.memoizedState = initialState;
+
+    var _queue = workInProgressHook.queue = {
+      last: null,
+      dispatch: null
+    };
+
+    var _dispatch = _queue.dispatch = dispatchAction.bind(null, currentlyRenderingComponent, _queue);
+
+    return [workInProgressHook.memoizedState, _dispatch];
+  }
+}
+
+function useMemo(nextCreate, deps) {
+  currentlyRenderingComponent = resolveCurrentlyRenderingComponent();
+  workInProgressHook = createWorkInProgressHook();
+  var nextDeps = deps === undefined ? null : deps;
+
+  if (workInProgressHook !== null) {
+    var prevState = workInProgressHook.memoizedState;
+
+    if (prevState !== null) {
+      if (nextDeps !== null) {
+        var prevDeps = prevState[1];
+
+        if (areHookInputsEqual(nextDeps, prevDeps)) {
+          return prevState[0];
+        }
+      }
+    }
+  }
+
+  {
+    isInHookUserCodeInDev = true;
+  }
+
+  var nextValue = nextCreate();
+
+  {
+    isInHookUserCodeInDev = false;
+  }
+
+  workInProgressHook.memoizedState = [nextValue, nextDeps];
+  return nextValue;
+}
+
+function useRef(initialValue) {
+  currentlyRenderingComponent = resolveCurrentlyRenderingComponent();
+  workInProgressHook = createWorkInProgressHook();
+  var previousRef = workInProgressHook.memoizedState;
+
+  if (previousRef === null) {
+    var ref = {
+      current: initialValue
+    };
+
+    {
+      Object.seal(ref);
+    }
+
+    workInProgressHook.memoizedState = ref;
+    return ref;
+  } else {
+    return previousRef;
+  }
+}
+
+function useLayoutEffect(create, inputs) {
+  {
+    currentHookNameInDev = 'useLayoutEffect';
+
+    error('useLayoutEffect does nothing on the server, because its effect cannot ' + "be encoded into the server renderer's output format. This will lead " + 'to a mismatch between the initial, non-hydrated UI and the intended ' + 'UI. To avoid this, useLayoutEffect should only be used in ' + 'components that render exclusively on the client. ' + 'See https://fb.me/react-uselayouteffect-ssr for common fixes.');
+  }
+}
+
+function dispatchAction(componentIdentity, queue, action) {
+  if (!(numberOfReRenders < RE_RENDER_LIMIT)) {
+    {
+      throw Error( "Too many re-renders. React limits the number of renders to prevent an infinite loop." );
+    }
+  }
+
+  if (componentIdentity === currentlyRenderingComponent) {
+    // This is a render phase update. Stash it in a lazily-created map of
+    // queue -> linked list of updates. After this render pass, we'll restart
+    // and apply the stashed updates on top of the work-in-progress hook.
+    didScheduleRenderPhaseUpdate = true;
+    var update = {
+      action: action,
+      next: null
+    };
+
+    if (renderPhaseUpdates === null) {
+      renderPhaseUpdates = new Map();
+    }
+
+    var firstRenderPhaseUpdate = renderPhaseUpdates.get(queue);
+
+    if (firstRenderPhaseUpdate === undefined) {
+      renderPhaseUpdates.set(queue, update);
+    } else {
+      // Append the update to the end of the list.
+      var lastRenderPhaseUpdate = firstRenderPhaseUpdate;
+
+      while (lastRenderPhaseUpdate.next !== null) {
+        lastRenderPhaseUpdate = lastRenderPhaseUpdate.next;
+      }
+
+      lastRenderPhaseUpdate.next = update;
+    }
+  }
+}
+
+function useCallback(callback, deps) {
+  // Callbacks are passed as they are in the server environment.
+  return callback;
+}
+
+function useResponder(responder, props) {
+  return {
+    props: props,
+    responder: responder
+  };
+}
+
+function useDeferredValue(value, config) {
+  resolveCurrentlyRenderingComponent();
+  return value;
+}
+
+function useTransition(config) {
+  resolveCurrentlyRenderingComponent();
+
+  var startTransition = function (callback) {
+    callback();
+  };
+
+  return [startTransition, false];
+}
+
+function noop() {}
+
+var currentThreadID = 0;
+function setCurrentThreadID(threadID) {
+  currentThreadID = threadID;
+}
+var Dispatcher = {
+  readContext: readContext,
+  useContext: useContext,
+  useMemo: useMemo,
+  useReducer: useReducer,
+  useRef: useRef,
+  useState: useState,
+  useLayoutEffect: useLayoutEffect,
+  useCallback: useCallback,
+  // useImperativeHandle is not run in the server environment
+  useImperativeHandle: noop,
+  // Effects are not run in the server environment.
+  useEffect: noop,
+  // Debugging effect
+  useDebugValue: noop,
+  useResponder: useResponder,
+  useDeferredValue: useDeferredValue,
+  useTransition: useTransition
+};
+
+var HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';
+var MATH_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';
+var SVG_NAMESPACE = 'http://www.w3.org/2000/svg';
+var Namespaces = {
+  html: HTML_NAMESPACE,
+  mathml: MATH_NAMESPACE,
+  svg: SVG_NAMESPACE
+}; // Assumes there is no parent namespace.
+
+function getIntrinsicNamespace(type) {
+  switch (type) {
+    case 'svg':
+      return SVG_NAMESPACE;
+
+    case 'math':
+      return MATH_NAMESPACE;
+
+    default:
+      return HTML_NAMESPACE;
+  }
+}
+function getChildNamespace(parentNamespace, type) {
+  if (parentNamespace == null || parentNamespace === HTML_NAMESPACE) {
+    // No (or default) parent namespace: potential entry point.
+    return getIntrinsicNamespace(type);
+  }
+
+  if (parentNamespace === SVG_NAMESPACE && type === 'foreignObject') {
+    // We're leaving SVG.
+    return HTML_NAMESPACE;
+  } // By default, pass namespace below.
+
+
+  return parentNamespace;
+}
+
+var ReactDebugCurrentFrame$2 = null;
+var ReactControlledValuePropTypes = {
+  checkPropTypes: null
+};
+
+{
+  ReactDebugCurrentFrame$2 = ReactSharedInternals.ReactDebugCurrentFrame;
+  var hasReadOnlyValue = {
+    button: true,
+    checkbox: true,
+    image: true,
+    hidden: true,
+    radio: true,
+    reset: true,
+    submit: true
+  };
+  var propTypes = {
+    value: function (props, propName, componentName) {
+      if (hasReadOnlyValue[props.type] || props.onChange || props.readOnly || props.disabled || props[propName] == null || enableDeprecatedFlareAPI ) {
+        return null;
+      }
+
+      return new Error('You provided a `value` prop to a form field without an ' + '`onChange` handler. This will render a read-only field. If ' + 'the field should be mutable use `defaultValue`. Otherwise, ' + 'set either `onChange` or `readOnly`.');
+    },
+    checked: function (props, propName, componentName) {
+      if (props.onChange || props.readOnly || props.disabled || props[propName] == null || enableDeprecatedFlareAPI ) {
+        return null;
+      }
+
+      return new Error('You provided a `checked` prop to a form field without an ' + '`onChange` handler. This will render a read-only field. If ' + 'the field should be mutable use `defaultChecked`. Otherwise, ' + 'set either `onChange` or `readOnly`.');
+    }
+  };
+  /**
+   * Provide a linked `value` attribute for controlled forms. You should not use
+   * this outside of the ReactDOM controlled form components.
+   */
+
+  ReactControlledValuePropTypes.checkPropTypes = function (tagName, props) {
+    checkPropTypes(propTypes, props, 'prop', tagName, ReactDebugCurrentFrame$2.getStackAddendum);
+  };
+}
+
+// For HTML, certain tags should omit their close tag. We keep a whitelist for
+// those special-case tags.
+var omittedCloseTags = {
+  area: true,
+  base: true,
+  br: true,
+  col: true,
+  embed: true,
+  hr: true,
+  img: true,
+  input: true,
+  keygen: true,
+  link: true,
+  meta: true,
+  param: true,
+  source: true,
+  track: true,
+  wbr: true // NOTE: menuitem's close tag should be omitted, but that causes problems.
+
+};
+
+// `omittedCloseTags` except that `menuitem` should still have its closing tag.
+
+var voidElementTags = _assign({
+  menuitem: true
+}, omittedCloseTags);
+
+var HTML = '__html';
+var ReactDebugCurrentFrame$3 = null;
+
+{
+  ReactDebugCurrentFrame$3 = ReactSharedInternals.ReactDebugCurrentFrame;
+}
+
+function assertValidProps(tag, props) {
+  if (!props) {
+    return;
+  } // Note the use of `==` which checks for null or undefined.
+
+
+  if (voidElementTags[tag]) {
+    if (!(props.children == null && props.dangerouslySetInnerHTML == null)) {
+      {
+        throw Error( tag + " is a void element tag and must neither have `children` nor use `dangerouslySetInnerHTML`." + ( ReactDebugCurrentFrame$3.getStackAddendum() ) );
+      }
+    }
+  }
+
+  if (props.dangerouslySetInnerHTML != null) {
+    if (!(props.children == null)) {
+      {
+        throw Error( "Can only set one of `children` or `props.dangerouslySetInnerHTML`." );
+      }
+    }
+
+    if (!(typeof props.dangerouslySetInnerHTML === 'object' && HTML in props.dangerouslySetInnerHTML)) {
+      {
+        throw Error( "`props.dangerouslySetInnerHTML` must be in the form `{__html: ...}`. Please visit https://fb.me/react-invariant-dangerously-set-inner-html for more information." );
+      }
+    }
+  }
+
+  {
+    if (!props.suppressContentEditableWarning && props.contentEditable && props.children != null) {
+      error('A component is `contentEditable` and contains `children` managed by ' + 'React. It is now your responsibility to guarantee that none of ' + 'those nodes are unexpectedly modified or duplicated. This is ' + 'probably not intentional.');
+    }
+  }
+
+  if (!(props.style == null || typeof props.style === 'object')) {
+    {
+      throw Error( "The `style` prop expects a mapping from style properties to values, not a string. For example, style={{marginRight: spacing + 'em'}} when using JSX." + ( ReactDebugCurrentFrame$3.getStackAddendum() ) );
+    }
+  }
+}
+
+/**
+ * CSS properties which accept numbers but are not in units of "px".
+ */
+var isUnitlessNumber = {
+  animationIterationCount: true,
+  borderImageOutset: true,
+  borderImageSlice: true,
+  borderImageWidth: true,
+  boxFlex: true,
+  boxFlexGroup: true,
+  boxOrdinalGroup: true,
+  columnCount: true,
+  columns: true,
+  flex: true,
+  flexGrow: true,
+  flexPositive: true,
+  flexShrink: true,
+  flexNegative: true,
+  flexOrder: true,
+  gridArea: true,
+  gridRow: true,
+  gridRowEnd: true,
+  gridRowSpan: true,
+  gridRowStart: true,
+  gridColumn: true,
+  gridColumnEnd: true,
+  gridColumnSpan: true,
+  gridColumnStart: true,
+  fontWeight: true,
+  lineClamp: true,
+  lineHeight: true,
+  opacity: true,
+  order: true,
+  orphans: true,
+  tabSize: true,
+  widows: true,
+  zIndex: true,
+  zoom: true,
+  // SVG-related properties
+  fillOpacity: true,
+  floodOpacity: true,
+  stopOpacity: true,
+  strokeDasharray: true,
+  strokeDashoffset: true,
+  strokeMiterlimit: true,
+  strokeOpacity: true,
+  strokeWidth: true
+};
+/**
+ * @param {string} prefix vendor-specific prefix, eg: Webkit
+ * @param {string} key style name, eg: transitionDuration
+ * @return {string} style name prefixed with `prefix`, properly camelCased, eg:
+ * WebkitTransitionDuration
+ */
+
+function prefixKey(prefix, key) {
+  return prefix + key.charAt(0).toUpperCase() + key.substring(1);
+}
+/**
+ * Support style names that may come passed in prefixed by adding permutations
+ * of vendor prefixes.
+ */
+
+
+var prefixes = ['Webkit', 'ms', 'Moz', 'O']; // Using Object.keys here, or else the vanilla for-in loop makes IE8 go into an
+// infinite loop, because it iterates over the newly added props too.
+
+Object.keys(isUnitlessNumber).forEach(function (prop) {
+  prefixes.forEach(function (prefix) {
+    isUnitlessNumber[prefixKey(prefix, prop)] = isUnitlessNumber[prop];
+  });
+});
+
+/**
+ * Convert a value into the proper css writable value. The style name `name`
+ * should be logical (no hyphens), as specified
+ * in `CSSProperty.isUnitlessNumber`.
+ *
+ * @param {string} name CSS property name such as `topMargin`.
+ * @param {*} value CSS property value such as `10px`.
+ * @return {string} Normalized style value with dimensions applied.
+ */
+
+function dangerousStyleValue(name, value, isCustomProperty) {
+  // Note that we've removed escapeTextForBrowser() calls here since the
+  // whole string will be escaped when the attribute is injected into
+  // the markup. If you provide unsafe user data here they can inject
+  // arbitrary CSS which may be problematic (I couldn't repro this):
+  // https://www.owasp.org/index.php/XSS_Filter_Evasion_Cheat_Sheet
+  // http://www.thespanner.co.uk/2007/11/26/ultimate-xss-css-injection/
+  // This is not an XSS hole but instead a potential CSS injection issue
+  // which has lead to a greater discussion about how we're going to
+  // trust URLs moving forward. See #2115901
+  var isEmpty = value == null || typeof value === 'boolean' || value === '';
+
+  if (isEmpty) {
+    return '';
+  }
+
+  if (!isCustomProperty && typeof value === 'number' && value !== 0 && !(isUnitlessNumber.hasOwnProperty(name) && isUnitlessNumber[name])) {
+    return value + 'px'; // Presumes implicit 'px' suffix for unitless numbers
+  }
+
+  return ('' + value).trim();
+}
+
+var uppercasePattern = /([A-Z])/g;
+var msPattern = /^ms-/;
+/**
+ * Hyphenates a camelcased CSS property name, for example:
+ *
+ *   > hyphenateStyleName('backgroundColor')
+ *   < "background-color"
+ *   > hyphenateStyleName('MozTransition')
+ *   < "-moz-transition"
+ *   > hyphenateStyleName('msTransition')
+ *   < "-ms-transition"
+ *
+ * As Modernizr suggests (http://modernizr.com/docs/#prefixed), an `ms` prefix
+ * is converted to `-ms-`.
+ */
+
+function hyphenateStyleName(name) {
+  return name.replace(uppercasePattern, '-$1').toLowerCase().replace(msPattern, '-ms-');
+}
+
+function isCustomComponent(tagName, props) {
+  if (tagName.indexOf('-') === -1) {
+    return typeof props.is === 'string';
+  }
+
+  switch (tagName) {
+    // These are reserved SVG and MathML elements.
+    // We don't mind this whitelist too much because we expect it to never grow.
+    // The alternative is to track the namespace in a few places which is convoluted.
+    // https://w3c.github.io/webcomponents/spec/custom/#custom-elements-core-concepts
+    case 'annotation-xml':
+    case 'color-profile':
+    case 'font-face':
+    case 'font-face-src':
+    case 'font-face-uri':
+    case 'font-face-format':
+    case 'font-face-name':
+    case 'missing-glyph':
+      return false;
+
+    default:
+      return true;
+  }
+}
+
+var warnValidStyle = function () {};
+
+{
+  // 'msTransform' is correct, but the other prefixes should be capitalized
+  var badVendoredStyleNamePattern = /^(?:webkit|moz|o)[A-Z]/;
+  var msPattern$1 = /^-ms-/;
+  var hyphenPattern = /-(.)/g; // style values shouldn't contain a semicolon
+
+  var badStyleValueWithSemicolonPattern = /;\s*$/;
+  var warnedStyleNames = {};
+  var warnedStyleValues = {};
+  var warnedForNaNValue = false;
+  var warnedForInfinityValue = false;
+
+  var camelize = function (string) {
+    return string.replace(hyphenPattern, function (_, character) {
+      return character.toUpperCase();
+    });
+  };
+
+  var warnHyphenatedStyleName = function (name) {
+    if (warnedStyleNames.hasOwnProperty(name) && warnedStyleNames[name]) {
+      return;
+    }
+
+    warnedStyleNames[name] = true;
+
+    error('Unsupported style property %s. Did you mean %s?', name, // As Andi Smith suggests
+    // (http://www.andismith.com/blog/2012/02/modernizr-prefixed/), an `-ms` prefix
+    // is converted to lowercase `ms`.
+    camelize(name.replace(msPattern$1, 'ms-')));
+  };
+
+  var warnBadVendoredStyleName = function (name) {
+    if (warnedStyleNames.hasOwnProperty(name) && warnedStyleNames[name]) {
+      return;
+    }
+
+    warnedStyleNames[name] = true;
+
+    error('Unsupported vendor-prefixed style property %s. Did you mean %s?', name, name.charAt(0).toUpperCase() + name.slice(1));
+  };
+
+  var warnStyleValueWithSemicolon = function (name, value) {
+    if (warnedStyleValues.hasOwnProperty(value) && warnedStyleValues[value]) {
+      return;
+    }
+
+    warnedStyleValues[value] = true;
+
+    error("Style property values shouldn't contain a semicolon. " + 'Try "%s: %s" instead.', name, value.replace(badStyleValueWithSemicolonPattern, ''));
+  };
+
+  var warnStyleValueIsNaN = function (name, value) {
+    if (warnedForNaNValue) {
+      return;
+    }
+
+    warnedForNaNValue = true;
+
+    error('`NaN` is an invalid value for the `%s` css style property.', name);
+  };
+
+  var warnStyleValueIsInfinity = function (name, value) {
+    if (warnedForInfinityValue) {
+      return;
+    }
+
+    warnedForInfinityValue = true;
+
+    error('`Infinity` is an invalid value for the `%s` css style property.', name);
+  };
+
+  warnValidStyle = function (name, value) {
+    if (name.indexOf('-') > -1) {
+      warnHyphenatedStyleName(name);
+    } else if (badVendoredStyleNamePattern.test(name)) {
+      warnBadVendoredStyleName(name);
+    } else if (badStyleValueWithSemicolonPattern.test(value)) {
+      warnStyleValueWithSemicolon(name, value);
+    }
+
+    if (typeof value === 'number') {
+      if (isNaN(value)) {
+        warnStyleValueIsNaN(name, value);
+      } else if (!isFinite(value)) {
+        warnStyleValueIsInfinity(name, value);
+      }
+    }
+  };
+}
+
+var warnValidStyle$1 = warnValidStyle;
+
+var ariaProperties = {
+  'aria-current': 0,
+  // state
+  'aria-details': 0,
+  'aria-disabled': 0,
+  // state
+  'aria-hidden': 0,
+  // state
+  'aria-invalid': 0,
+  // state
+  'aria-keyshortcuts': 0,
+  'aria-label': 0,
+  'aria-roledescription': 0,
+  // Widget Attributes
+  'aria-autocomplete': 0,
+  'aria-checked': 0,
+  'aria-expanded': 0,
+  'aria-haspopup': 0,
+  'aria-level': 0,
+  'aria-modal': 0,
+  'aria-multiline': 0,
+  'aria-multiselectable': 0,
+  'aria-orientation': 0,
+  'aria-placeholder': 0,
+  'aria-pressed': 0,
+  'aria-readonly': 0,
+  'aria-required': 0,
+  'aria-selected': 0,
+  'aria-sort': 0,
+  'aria-valuemax': 0,
+  'aria-valuemin': 0,
+  'aria-valuenow': 0,
+  'aria-valuetext': 0,
+  // Live Region Attributes
+  'aria-atomic': 0,
+  'aria-busy': 0,
+  'aria-live': 0,
+  'aria-relevant': 0,
+  // Drag-and-Drop Attributes
+  'aria-dropeffect': 0,
+  'aria-grabbed': 0,
+  // Relationship Attributes
+  'aria-activedescendant': 0,
+  'aria-colcount': 0,
+  'aria-colindex': 0,
+  'aria-colspan': 0,
+  'aria-controls': 0,
+  'aria-describedby': 0,
+  'aria-errormessage': 0,
+  'aria-flowto': 0,
+  'aria-labelledby': 0,
+  'aria-owns': 0,
+  'aria-posinset': 0,
+  'aria-rowcount': 0,
+  'aria-rowindex': 0,
+  'aria-rowspan': 0,
+  'aria-setsize': 0
+};
+
+var warnedProperties = {};
+var rARIA = new RegExp('^(aria)-[' + ATTRIBUTE_NAME_CHAR + ']*$');
+var rARIACamel = new RegExp('^(aria)[A-Z][' + ATTRIBUTE_NAME_CHAR + ']*$');
+var hasOwnProperty$1 = Object.prototype.hasOwnProperty;
+
+function validateProperty(tagName, name) {
+  {
+    if (hasOwnProperty$1.call(warnedProperties, name) && warnedProperties[name]) {
+      return true;
+    }
+
+    if (rARIACamel.test(name)) {
+      var ariaName = 'aria-' + name.slice(4).toLowerCase();
+      var correctName = ariaProperties.hasOwnProperty(ariaName) ? ariaName : null; // If this is an aria-* attribute, but is not listed in the known DOM
+      // DOM properties, then it is an invalid aria-* attribute.
+
+      if (correctName == null) {
+        error('Invalid ARIA attribute `%s`. ARIA attributes follow the pattern aria-* and must be lowercase.', name);
+
+        warnedProperties[name] = true;
+        return true;
+      } // aria-* attributes should be lowercase; suggest the lowercase version.
+
+
+      if (name !== correctName) {
+        error('Invalid ARIA attribute `%s`. Did you mean `%s`?', name, correctName);
+
+        warnedProperties[name] = true;
+        return true;
+      }
+    }
+
+    if (rARIA.test(name)) {
+      var lowerCasedName = name.toLowerCase();
+      var standardName = ariaProperties.hasOwnProperty(lowerCasedName) ? lowerCasedName : null; // If this is an aria-* attribute, but is not listed in the known DOM
+      // DOM properties, then it is an invalid aria-* attribute.
+
+      if (standardName == null) {
+        warnedProperties[name] = true;
+        return false;
+      } // aria-* attributes should be lowercase; suggest the lowercase version.
+
+
+      if (name !== standardName) {
+        error('Unknown ARIA attribute `%s`. Did you mean `%s`?', name, standardName);
+
+        warnedProperties[name] = true;
+        return true;
+      }
+    }
+  }
+
+  return true;
+}
+
+function warnInvalidARIAProps(type, props) {
+  {
+    var invalidProps = [];
+
+    for (var key in props) {
+      var isValid = validateProperty(type, key);
+
+      if (!isValid) {
+        invalidProps.push(key);
+      }
+    }
+
+    var unknownPropString = invalidProps.map(function (prop) {
+      return '`' + prop + '`';
+    }).join(', ');
+
+    if (invalidProps.length === 1) {
+      error('Invalid aria prop %s on <%s> tag. ' + 'For details, see https://fb.me/invalid-aria-prop', unknownPropString, type);
+    } else if (invalidProps.length > 1) {
+      error('Invalid aria props %s on <%s> tag. ' + 'For details, see https://fb.me/invalid-aria-prop', unknownPropString, type);
+    }
+  }
+}
+
+function validateProperties(type, props) {
+  if (isCustomComponent(type, props)) {
+    return;
+  }
+
+  warnInvalidARIAProps(type, props);
+}
+
+var didWarnValueNull = false;
+function validateProperties$1(type, props) {
+  {
+    if (type !== 'input' && type !== 'textarea' && type !== 'select') {
+      return;
+    }
+
+    if (props != null && props.value === null && !didWarnValueNull) {
+      didWarnValueNull = true;
+
+      if (type === 'select' && props.multiple) {
+        error('`value` prop on `%s` should not be null. ' + 'Consider using an empty array when `multiple` is set to `true` ' + 'to clear the component or `undefined` for uncontrolled components.', type);
+      } else {
+        error('`value` prop on `%s` should not be null. ' + 'Consider using an empty string to clear the component or `undefined` ' + 'for uncontrolled components.', type);
+      }
+    }
+  }
+}
+
+/**
+ * Mapping from registration name to plugin module
+ */
+
+var registrationNameModules = {};
+/**
+ * Mapping from lowercase registration names to the properly cased version,
+ * used to warn in the case of missing event handlers. Available
+ * only in true.
+ * @type {Object}
+ */
+
+var possibleRegistrationNames =  {} ; // Trust the developer to only use possibleRegistrationNames in true
+
+// When adding attributes to the HTML or SVG whitelist, be sure to
+// also add them to this module to ensure casing and incorrect name
+// warnings.
+var possibleStandardNames = {
+  // HTML
+  accept: 'accept',
+  acceptcharset: 'acceptCharset',
+  'accept-charset': 'acceptCharset',
+  accesskey: 'accessKey',
+  action: 'action',
+  allowfullscreen: 'allowFullScreen',
+  alt: 'alt',
+  as: 'as',
+  async: 'async',
+  autocapitalize: 'autoCapitalize',
+  autocomplete: 'autoComplete',
+  autocorrect: 'autoCorrect',
+  autofocus: 'autoFocus',
+  autoplay: 'autoPlay',
+  autosave: 'autoSave',
+  capture: 'capture',
+  cellpadding: 'cellPadding',
+  cellspacing: 'cellSpacing',
+  challenge: 'challenge',
+  charset: 'charSet',
+  checked: 'checked',
+  children: 'children',
+  cite: 'cite',
+  class: 'className',
+  classid: 'classID',
+  classname: 'className',
+  cols: 'cols',
+  colspan: 'colSpan',
+  content: 'content',
+  contenteditable: 'contentEditable',
+  contextmenu: 'contextMenu',
+  controls: 'controls',
+  controlslist: 'controlsList',
+  coords: 'coords',
+  crossorigin: 'crossOrigin',
+  dangerouslysetinnerhtml: 'dangerouslySetInnerHTML',
+  data: 'data',
+  datetime: 'dateTime',
+  default: 'default',
+  defaultchecked: 'defaultChecked',
+  defaultvalue: 'defaultValue',
+  defer: 'defer',
+  dir: 'dir',
+  disabled: 'disabled',
+  disablepictureinpicture: 'disablePictureInPicture',
+  download: 'download',
+  draggable: 'draggable',
+  enctype: 'encType',
+  for: 'htmlFor',
+  form: 'form',
+  formmethod: 'formMethod',
+  formaction: 'formAction',
+  formenctype: 'formEncType',
+  formnovalidate: 'formNoValidate',
+  formtarget: 'formTarget',
+  frameborder: 'frameBorder',
+  headers: 'headers',
+  height: 'height',
+  hidden: 'hidden',
+  high: 'high',
+  href: 'href',
+  hreflang: 'hrefLang',
+  htmlfor: 'htmlFor',
+  httpequiv: 'httpEquiv',
+  'http-equiv': 'httpEquiv',
+  icon: 'icon',
+  id: 'id',
+  innerhtml: 'innerHTML',
+  inputmode: 'inputMode',
+  integrity: 'integrity',
+  is: 'is',
+  itemid: 'itemID',
+  itemprop: 'itemProp',
+  itemref: 'itemRef',
+  itemscope: 'itemScope',
+  itemtype: 'itemType',
+  keyparams: 'keyParams',
+  keytype: 'keyType',
+  kind: 'kind',
+  label: 'label',
+  lang: 'lang',
+  list: 'list',
+  loop: 'loop',
+  low: 'low',
+  manifest: 'manifest',
+  marginwidth: 'marginWidth',
+  marginheight: 'marginHeight',
+  max: 'max',
+  maxlength: 'maxLength',
+  media: 'media',
+  mediagroup: 'mediaGroup',
+  method: 'method',
+  min: 'min',
+  minlength: 'minLength',
+  multiple: 'multiple',
+  muted: 'muted',
+  name: 'name',
+  nomodule: 'noModule',
+  nonce: 'nonce',
+  novalidate: 'noValidate',
+  open: 'open',
+  optimum: 'optimum',
+  pattern: 'pattern',
+  placeholder: 'placeholder',
+  playsinline: 'playsInline',
+  poster: 'poster',
+  preload: 'preload',
+  profile: 'profile',
+  radiogroup: 'radioGroup',
+  readonly: 'readOnly',
+  referrerpolicy: 'referrerPolicy',
+  rel: 'rel',
+  required: 'required',
+  reversed: 'reversed',
+  role: 'role',
+  rows: 'rows',
+  rowspan: 'rowSpan',
+  sandbox: 'sandbox',
+  scope: 'scope',
+  scoped: 'scoped',
+  scrolling: 'scrolling',
+  seamless: 'seamless',
+  selected: 'selected',
+  shape: 'shape',
+  size: 'size',
+  sizes: 'sizes',
+  span: 'span',
+  spellcheck: 'spellCheck',
+  src: 'src',
+  srcdoc: 'srcDoc',
+  srclang: 'srcLang',
+  srcset: 'srcSet',
+  start: 'start',
+  step: 'step',
+  style: 'style',
+  summary: 'summary',
+  tabindex: 'tabIndex',
+  target: 'target',
+  title: 'title',
+  type: 'type',
+  usemap: 'useMap',
+  value: 'value',
+  width: 'width',
+  wmode: 'wmode',
+  wrap: 'wrap',
+  // SVG
+  about: 'about',
+  accentheight: 'accentHeight',
+  'accent-height': 'accentHeight',
+  accumulate: 'accumulate',
+  additive: 'additive',
+  alignmentbaseline: 'alignmentBaseline',
+  'alignment-baseline': 'alignmentBaseline',
+  allowreorder: 'allowReorder',
+  alphabetic: 'alphabetic',
+  amplitude: 'amplitude',
+  arabicform: 'arabicForm',
+  'arabic-form': 'arabicForm',
+  ascent: 'ascent',
+  attributename: 'attributeName',
+  attributetype: 'attributeType',
+  autoreverse: 'autoReverse',
+  azimuth: 'azimuth',
+  basefrequency: 'baseFrequency',
+  baselineshift: 'baselineShift',
+  'baseline-shift': 'baselineShift',
+  baseprofile: 'baseProfile',
+  bbox: 'bbox',
+  begin: 'begin',
+  bias: 'bias',
+  by: 'by',
+  calcmode: 'calcMode',
+  capheight: 'capHeight',
+  'cap-height': 'capHeight',
+  clip: 'clip',
+  clippath: 'clipPath',
+  'clip-path': 'clipPath',
+  clippathunits: 'clipPathUnits',
+  cliprule: 'clipRule',
+  'clip-rule': 'clipRule',
+  color: 'color',
+  colorinterpolation: 'colorInterpolation',
+  'color-interpolation': 'colorInterpolation',
+  colorinterpolationfilters: 'colorInterpolationFilters',
+  'color-interpolation-filters': 'colorInterpolationFilters',
+  colorprofile: 'colorProfile',
+  'color-profile': 'colorProfile',
+  colorrendering: 'colorRendering',
+  'color-rendering': 'colorRendering',
+  contentscripttype: 'contentScriptType',
+  contentstyletype: 'contentStyleType',
+  cursor: 'cursor',
+  cx: 'cx',
+  cy: 'cy',
+  d: 'd',
+  datatype: 'datatype',
+  decelerate: 'decelerate',
+  descent: 'descent',
+  diffuseconstant: 'diffuseConstant',
+  direction: 'direction',
+  display: 'display',
+  divisor: 'divisor',
+  dominantbaseline: 'dominantBaseline',
+  'dominant-baseline': 'dominantBaseline',
+  dur: 'dur',
+  dx: 'dx',
+  dy: 'dy',
+  edgemode: 'edgeMode',
+  elevation: 'elevation',
+  enablebackground: 'enableBackground',
+  'enable-background': 'enableBackground',
+  end: 'end',
+  exponent: 'exponent',
+  externalresourcesrequired: 'externalResourcesRequired',
+  fill: 'fill',
+  fillopacity: 'fillOpacity',
+  'fill-opacity': 'fillOpacity',
+  fillrule: 'fillRule',
+  'fill-rule': 'fillRule',
+  filter: 'filter',
+  filterres: 'filterRes',
+  filterunits: 'filterUnits',
+  floodopacity: 'floodOpacity',
+  'flood-opacity': 'floodOpacity',
+  floodcolor: 'floodColor',
+  'flood-color': 'floodColor',
+  focusable: 'focusable',
+  fontfamily: 'fontFamily',
+  'font-family': 'fontFamily',
+  fontsize: 'fontSize',
+  'font-size': 'fontSize',
+  fontsizeadjust: 'fontSizeAdjust',
+  'font-size-adjust': 'fontSizeAdjust',
+  fontstretch: 'fontStretch',
+  'font-stretch': 'fontStretch',
+  fontstyle: 'fontStyle',
+  'font-style': 'fontStyle',
+  fontvariant: 'fontVariant',
+  'font-variant': 'fontVariant',
+  fontweight: 'fontWeight',
+  'font-weight': 'fontWeight',
+  format: 'format',
+  from: 'from',
+  fx: 'fx',
+  fy: 'fy',
+  g1: 'g1',
+  g2: 'g2',
+  glyphname: 'glyphName',
+  'glyph-name': 'glyphName',
+  glyphorientationhorizontal: 'glyphOrientationHorizontal',
+  'glyph-orientation-horizontal': 'glyphOrientationHorizontal',
+  glyphorientationvertical: 'glyphOrientationVertical',
+  'glyph-orientation-vertical': 'glyphOrientationVertical',
+  glyphref: 'glyphRef',
+  gradienttransform: 'gradientTransform',
+  gradientunits: 'gradientUnits',
+  hanging: 'hanging',
+  horizadvx: 'horizAdvX',
+  'horiz-adv-x': 'horizAdvX',
+  horizoriginx: 'horizOriginX',
+  'horiz-origin-x': 'horizOriginX',
+  ideographic: 'ideographic',
+  imagerendering: 'imageRendering',
+  'image-rendering': 'imageRendering',
+  in2: 'in2',
+  in: 'in',
+  inlist: 'inlist',
+  intercept: 'intercept',
+  k1: 'k1',
+  k2: 'k2',
+  k3: 'k3',
+  k4: 'k4',
+  k: 'k',
+  kernelmatrix: 'kernelMatrix',
+  kernelunitlength: 'kernelUnitLength',
+  kerning: 'kerning',
+  keypoints: 'keyPoints',
+  keysplines: 'keySplines',
+  keytimes: 'keyTimes',
+  lengthadjust: 'lengthAdjust',
+  letterspacing: 'letterSpacing',
+  'letter-spacing': 'letterSpacing',
+  lightingcolor: 'lightingColor',
+  'lighting-color': 'lightingColor',
+  limitingconeangle: 'limitingConeAngle',
+  local: 'local',
+  markerend: 'markerEnd',
+  'marker-end': 'markerEnd',
+  markerheight: 'markerHeight',
+  markermid: 'markerMid',
+  'marker-mid': 'markerMid',
+  markerstart: 'markerStart',
+  'marker-start': 'markerStart',
+  markerunits: 'markerUnits',
+  markerwidth: 'markerWidth',
+  mask: 'mask',
+  maskcontentunits: 'maskContentUnits',
+  maskunits: 'maskUnits',
+  mathematical: 'mathematical',
+  mode: 'mode',
+  numoctaves: 'numOctaves',
+  offset: 'offset',
+  opacity: 'opacity',
+  operator: 'operator',
+  order: 'order',
+  orient: 'orient',
+  orientation: 'orientation',
+  origin: 'origin',
+  overflow: 'overflow',
+  overlineposition: 'overlinePosition',
+  'overline-position': 'overlinePosition',
+  overlinethickness: 'overlineThickness',
+  'overline-thickness': 'overlineThickness',
+  paintorder: 'paintOrder',
+  'paint-order': 'paintOrder',
+  panose1: 'panose1',
+  'panose-1': 'panose1',
+  pathlength: 'pathLength',
+  patterncontentunits: 'patternContentUnits',
+  patterntransform: 'patternTransform',
+  patternunits: 'patternUnits',
+  pointerevents: 'pointerEvents',
+  'pointer-events': 'pointerEvents',
+  points: 'points',
+  pointsatx: 'pointsAtX',
+  pointsaty: 'pointsAtY',
+  pointsatz: 'pointsAtZ',
+  prefix: 'prefix',
+  preservealpha: 'preserveAlpha',
+  preserveaspectratio: 'preserveAspectRatio',
+  primitiveunits: 'primitiveUnits',
+  property: 'property',
+  r: 'r',
+  radius: 'radius',
+  refx: 'refX',
+  refy: 'refY',
+  renderingintent: 'renderingIntent',
+  'rendering-intent': 'renderingIntent',
+  repeatcount: 'repeatCount',
+  repeatdur: 'repeatDur',
+  requiredextensions: 'requiredExtensions',
+  requiredfeatures: 'requiredFeatures',
+  resource: 'resource',
+  restart: 'restart',
+  result: 'result',
+  results: 'results',
+  rotate: 'rotate',
+  rx: 'rx',
+  ry: 'ry',
+  scale: 'scale',
+  security: 'security',
+  seed: 'seed',
+  shaperendering: 'shapeRendering',
+  'shape-rendering': 'shapeRendering',
+  slope: 'slope',
+  spacing: 'spacing',
+  specularconstant: 'specularConstant',
+  specularexponent: 'specularExponent',
+  speed: 'speed',
+  spreadmethod: 'spreadMethod',
+  startoffset: 'startOffset',
+  stddeviation: 'stdDeviation',
+  stemh: 'stemh',
+  stemv: 'stemv',
+  stitchtiles: 'stitchTiles',
+  stopcolor: 'stopColor',
+  'stop-color': 'stopColor',
+  stopopacity: 'stopOpacity',
+  'stop-opacity': 'stopOpacity',
+  strikethroughposition: 'strikethroughPosition',
+  'strikethrough-position': 'strikethroughPosition',
+  strikethroughthickness: 'strikethroughThickness',
+  'strikethrough-thickness': 'strikethroughThickness',
+  string: 'string',
+  stroke: 'stroke',
+  strokedasharray: 'strokeDasharray',
+  'stroke-dasharray': 'strokeDasharray',
+  strokedashoffset: 'strokeDashoffset',
+  'stroke-dashoffset': 'strokeDashoffset',
+  strokelinecap: 'strokeLinecap',
+  'stroke-linecap': 'strokeLinecap',
+  strokelinejoin: 'strokeLinejoin',
+  'stroke-linejoin': 'strokeLinejoin',
+  strokemiterlimit: 'strokeMiterlimit',
+  'stroke-miterlimit': 'strokeMiterlimit',
+  strokewidth: 'strokeWidth',
+  'stroke-width': 'strokeWidth',
+  strokeopacity: 'strokeOpacity',
+  'stroke-opacity': 'strokeOpacity',
+  suppresscontenteditablewarning: 'suppressContentEditableWarning',
+  suppresshydrationwarning: 'suppressHydrationWarning',
+  surfacescale: 'surfaceScale',
+  systemlanguage: 'systemLanguage',
+  tablevalues: 'tableValues',
+  targetx: 'targetX',
+  targety: 'targetY',
+  textanchor: 'textAnchor',
+  'text-anchor': 'textAnchor',
+  textdecoration: 'textDecoration',
+  'text-decoration': 'textDecoration',
+  textlength: 'textLength',
+  textrendering: 'textRendering',
+  'text-rendering': 'textRendering',
+  to: 'to',
+  transform: 'transform',
+  typeof: 'typeof',
+  u1: 'u1',
+  u2: 'u2',
+  underlineposition: 'underlinePosition',
+  'underline-position': 'underlinePosition',
+  underlinethickness: 'underlineThickness',
+  'underline-thickness': 'underlineThickness',
+  unicode: 'unicode',
+  unicodebidi: 'unicodeBidi',
+  'unicode-bidi': 'unicodeBidi',
+  unicoderange: 'unicodeRange',
+  'unicode-range': 'unicodeRange',
+  unitsperem: 'unitsPerEm',
+  'units-per-em': 'unitsPerEm',
+  unselectable: 'unselectable',
+  valphabetic: 'vAlphabetic',
+  'v-alphabetic': 'vAlphabetic',
+  values: 'values',
+  vectoreffect: 'vectorEffect',
+  'vector-effect': 'vectorEffect',
+  version: 'version',
+  vertadvy: 'vertAdvY',
+  'vert-adv-y': 'vertAdvY',
+  vertoriginx: 'vertOriginX',
+  'vert-origin-x': 'vertOriginX',
+  vertoriginy: 'vertOriginY',
+  'vert-origin-y': 'vertOriginY',
+  vhanging: 'vHanging',
+  'v-hanging': 'vHanging',
+  videographic: 'vIdeographic',
+  'v-ideographic': 'vIdeographic',
+  viewbox: 'viewBox',
+  viewtarget: 'viewTarget',
+  visibility: 'visibility',
+  vmathematical: 'vMathematical',
+  'v-mathematical': 'vMathematical',
+  vocab: 'vocab',
+  widths: 'widths',
+  wordspacing: 'wordSpacing',
+  'word-spacing': 'wordSpacing',
+  writingmode: 'writingMode',
+  'writing-mode': 'writingMode',
+  x1: 'x1',
+  x2: 'x2',
+  x: 'x',
+  xchannelselector: 'xChannelSelector',
+  xheight: 'xHeight',
+  'x-height': 'xHeight',
+  xlinkactuate: 'xlinkActuate',
+  'xlink:actuate': 'xlinkActuate',
+  xlinkarcrole: 'xlinkArcrole',
+  'xlink:arcrole': 'xlinkArcrole',
+  xlinkhref: 'xlinkHref',
+  'xlink:href': 'xlinkHref',
+  xlinkrole: 'xlinkRole',
+  'xlink:role': 'xlinkRole',
+  xlinkshow: 'xlinkShow',
+  'xlink:show': 'xlinkShow',
+  xlinktitle: 'xlinkTitle',
+  'xlink:title': 'xlinkTitle',
+  xlinktype: 'xlinkType',
+  'xlink:type': 'xlinkType',
+  xmlbase: 'xmlBase',
+  'xml:base': 'xmlBase',
+  xmllang: 'xmlLang',
+  'xml:lang': 'xmlLang',
+  xmlns: 'xmlns',
+  'xml:space': 'xmlSpace',
+  xmlnsxlink: 'xmlnsXlink',
+  'xmlns:xlink': 'xmlnsXlink',
+  xmlspace: 'xmlSpace',
+  y1: 'y1',
+  y2: 'y2',
+  y: 'y',
+  ychannelselector: 'yChannelSelector',
+  z: 'z',
+  zoomandpan: 'zoomAndPan'
+};
+
+var validateProperty$1 = function () {};
+
+{
+  var warnedProperties$1 = {};
+  var _hasOwnProperty = Object.prototype.hasOwnProperty;
+  var EVENT_NAME_REGEX = /^on./;
+  var INVALID_EVENT_NAME_REGEX = /^on[^A-Z]/;
+  var rARIA$1 = new RegExp('^(aria)-[' + ATTRIBUTE_NAME_CHAR + ']*$');
+  var rARIACamel$1 = new RegExp('^(aria)[A-Z][' + ATTRIBUTE_NAME_CHAR + ']*$');
+
+  validateProperty$1 = function (tagName, name, value, canUseEventSystem) {
+    if (_hasOwnProperty.call(warnedProperties$1, name) && warnedProperties$1[name]) {
+      return true;
+    }
+
+    var lowerCasedName = name.toLowerCase();
+
+    if (lowerCasedName === 'onfocusin' || lowerCasedName === 'onfocusout') {
+      error('React uses onFocus and onBlur instead of onFocusIn and onFocusOut. ' + 'All React events are normalized to bubble, so onFocusIn and onFocusOut ' + 'are not needed/supported by React.');
+
+      warnedProperties$1[name] = true;
+      return true;
+    } // We can't rely on the event system being injected on the server.
+
+
+    if (canUseEventSystem) {
+      if (registrationNameModules.hasOwnProperty(name)) {
+        return true;
+      }
+
+      var registrationName = possibleRegistrationNames.hasOwnProperty(lowerCasedName) ? possibleRegistrationNames[lowerCasedName] : null;
+
+      if (registrationName != null) {
+        error('Invalid event handler property `%s`. Did you mean `%s`?', name, registrationName);
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+
+      if (EVENT_NAME_REGEX.test(name)) {
+        error('Unknown event handler property `%s`. It will be ignored.', name);
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+    } else if (EVENT_NAME_REGEX.test(name)) {
+      // If no event plugins have been injected, we are in a server environment.
+      // So we can't tell if the event name is correct for sure, but we can filter
+      // out known bad ones like `onclick`. We can't suggest a specific replacement though.
+      if (INVALID_EVENT_NAME_REGEX.test(name)) {
+        error('Invalid event handler property `%s`. ' + 'React events use the camelCase naming convention, for example `onClick`.', name);
+      }
+
+      warnedProperties$1[name] = true;
+      return true;
+    } // Let the ARIA attribute hook validate ARIA attributes
+
+
+    if (rARIA$1.test(name) || rARIACamel$1.test(name)) {
+      return true;
+    }
+
+    if (lowerCasedName === 'innerhtml') {
+      error('Directly setting property `innerHTML` is not permitted. ' + 'For more information, lookup documentation on `dangerouslySetInnerHTML`.');
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    if (lowerCasedName === 'aria') {
+      error('The `aria` attribute is reserved for future use in React. ' + 'Pass individual `aria-` attributes instead.');
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    if (lowerCasedName === 'is' && value !== null && value !== undefined && typeof value !== 'string') {
+      error('Received a `%s` for a string attribute `is`. If this is expected, cast ' + 'the value to a string.', typeof value);
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    if (typeof value === 'number' && isNaN(value)) {
+      error('Received NaN for the `%s` attribute. If this is expected, cast ' + 'the value to a string.', name);
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    var propertyInfo = getPropertyInfo(name);
+    var isReserved = propertyInfo !== null && propertyInfo.type === RESERVED; // Known attributes should match the casing specified in the property config.
+
+    if (possibleStandardNames.hasOwnProperty(lowerCasedName)) {
+      var standardName = possibleStandardNames[lowerCasedName];
+
+      if (standardName !== name) {
+        error('Invalid DOM property `%s`. Did you mean `%s`?', name, standardName);
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+    } else if (!isReserved && name !== lowerCasedName) {
+      // Unknown attributes should have lowercase casing since that's how they
+      // will be cased anyway with server rendering.
+      error('React does not recognize the `%s` prop on a DOM element. If you ' + 'intentionally want it to appear in the DOM as a custom ' + 'attribute, spell it as lowercase `%s` instead. ' + 'If you accidentally passed it from a parent component, remove ' + 'it from the DOM element.', name, lowerCasedName);
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    if (typeof value === 'boolean' && shouldRemoveAttributeWithWarning(name, value, propertyInfo, false)) {
+      if (value) {
+        error('Received `%s` for a non-boolean attribute `%s`.\n\n' + 'If you want to write it to the DOM, pass a string instead: ' + '%s="%s" or %s={value.toString()}.', value, name, name, value, name);
+      } else {
+        error('Received `%s` for a non-boolean attribute `%s`.\n\n' + 'If you want to write it to the DOM, pass a string instead: ' + '%s="%s" or %s={value.toString()}.\n\n' + 'If you used to conditionally omit it with %s={condition && value}, ' + 'pass %s={condition ? value : undefined} instead.', value, name, name, value, name, name, name);
+      }
+
+      warnedProperties$1[name] = true;
+      return true;
+    } // Now that we've validated casing, do not validate
+    // data types for reserved props
+
+
+    if (isReserved) {
+      return true;
+    } // Warn when a known attribute is a bad type
+
+
+    if (shouldRemoveAttributeWithWarning(name, value, propertyInfo, false)) {
+      warnedProperties$1[name] = true;
+      return false;
+    } // Warn when passing the strings 'false' or 'true' into a boolean prop
+
+
+    if ((value === 'false' || value === 'true') && propertyInfo !== null && propertyInfo.type === BOOLEAN) {
+      error('Received the string `%s` for the boolean attribute `%s`. ' + '%s ' + 'Did you mean %s={%s}?', value, name, value === 'false' ? 'The browser will interpret it as a truthy value.' : 'Although this works, it will not work as expected if you pass the string "false".', name, value);
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    return true;
+  };
+}
+
+var warnUnknownProperties = function (type, props, canUseEventSystem) {
+  {
+    var unknownProps = [];
+
+    for (var key in props) {
+      var isValid = validateProperty$1(type, key, props[key], canUseEventSystem);
+
+      if (!isValid) {
+        unknownProps.push(key);
+      }
+    }
+
+    var unknownPropString = unknownProps.map(function (prop) {
+      return '`' + prop + '`';
+    }).join(', ');
+
+    if (unknownProps.length === 1) {
+      error('Invalid value for prop %s on <%s> tag. Either remove it from the element, ' + 'or pass a string or number value to keep it in the DOM. ' + 'For details, see https://fb.me/react-attribute-behavior', unknownPropString, type);
+    } else if (unknownProps.length > 1) {
+      error('Invalid values for props %s on <%s> tag. Either remove them from the element, ' + 'or pass a string or number value to keep them in the DOM. ' + 'For details, see https://fb.me/react-attribute-behavior', unknownPropString, type);
+    }
+  }
+};
+
+function validateProperties$2(type, props, canUseEventSystem) {
+  if (isCustomComponent(type, props)) {
+    return;
+  }
+
+  warnUnknownProperties(type, props, canUseEventSystem);
+}
+
+var toArray = React.Children.toArray; // This is only used in DEV.
+// Each entry is `this.stack` from a currently executing renderer instance.
+// (There may be more than one because ReactDOMServer is reentrant).
+// Each stack is an array of frames which may contain nested stacks of elements.
+
+var currentDebugStacks = [];
+var ReactCurrentDispatcher = ReactSharedInternals.ReactCurrentDispatcher;
+var ReactDebugCurrentFrame$4;
+var prevGetCurrentStackImpl = null;
+
+var getCurrentServerStackImpl = function () {
+  return '';
+};
+
+var describeStackFrame = function (element) {
+  return '';
+};
+
+var validatePropertiesInDevelopment = function (type, props) {};
+
+var pushCurrentDebugStack = function (stack) {};
+
+var pushElementToDebugStack = function (element) {};
+
+var popCurrentDebugStack = function () {};
+
+var hasWarnedAboutUsingContextAsConsumer = false;
+
+{
+  ReactDebugCurrentFrame$4 = ReactSharedInternals.ReactDebugCurrentFrame;
+
+  validatePropertiesInDevelopment = function (type, props) {
+    validateProperties(type, props);
+    validateProperties$1(type, props);
+    validateProperties$2(type, props,
+    /* canUseEventSystem */
+    false);
+  };
+
+  describeStackFrame = function (element) {
+    var source = element._source;
+    var type = element.type;
+    var name = getComponentName(type);
+    var ownerName = null;
+    return describeComponentFrame(name, source, ownerName);
+  };
+
+  pushCurrentDebugStack = function (stack) {
+    currentDebugStacks.push(stack);
+
+    if (currentDebugStacks.length === 1) {
+      // We are entering a server renderer.
+      // Remember the previous (e.g. client) global stack implementation.
+      prevGetCurrentStackImpl = ReactDebugCurrentFrame$4.getCurrentStack;
+      ReactDebugCurrentFrame$4.getCurrentStack = getCurrentServerStackImpl;
+    }
+  };
+
+  pushElementToDebugStack = function (element) {
+    // For the innermost executing ReactDOMServer call,
+    var stack = currentDebugStacks[currentDebugStacks.length - 1]; // Take the innermost executing frame (e.g. <Foo>),
+
+    var frame = stack[stack.length - 1]; // and record that it has one more element associated with it.
+
+    frame.debugElementStack.push(element); // We only need this because we tail-optimize single-element
+    // children and directly handle them in an inner loop instead of
+    // creating separate frames for them.
+  };
+
+  popCurrentDebugStack = function () {
+    currentDebugStacks.pop();
+
+    if (currentDebugStacks.length === 0) {
+      // We are exiting the server renderer.
+      // Restore the previous (e.g. client) global stack implementation.
+      ReactDebugCurrentFrame$4.getCurrentStack = prevGetCurrentStackImpl;
+      prevGetCurrentStackImpl = null;
+    }
+  };
+
+  getCurrentServerStackImpl = function () {
+    if (currentDebugStacks.length === 0) {
+      // Nothing is currently rendering.
+      return '';
+    } // ReactDOMServer is reentrant so there may be multiple calls at the same time.
+    // Take the frames from the innermost call which is the last in the array.
+
+
+    var frames = currentDebugStacks[currentDebugStacks.length - 1];
+    var stack = ''; // Go through every frame in the stack from the innermost one.
+
+    for (var i = frames.length - 1; i >= 0; i--) {
+      var frame = frames[i]; // Every frame might have more than one debug element stack entry associated with it.
+      // This is because single-child nesting doesn't create materialized frames.
+      // Instead it would push them through `pushElementToDebugStack()`.
+
+      var debugElementStack = frame.debugElementStack;
+
+      for (var ii = debugElementStack.length - 1; ii >= 0; ii--) {
+        stack += describeStackFrame(debugElementStack[ii]);
+      }
+    }
+
+    return stack;
+  };
+}
+
+var didWarnDefaultInputValue = false;
+var didWarnDefaultChecked = false;
+var didWarnDefaultSelectValue = false;
+var didWarnDefaultTextareaValue = false;
+var didWarnInvalidOptionChildren = false;
+var didWarnAboutNoopUpdateForComponent = {};
+var didWarnAboutBadClass = {};
+var didWarnAboutModulePatternComponent = {};
+var didWarnAboutDeprecatedWillMount = {};
+var didWarnAboutUndefinedDerivedState = {};
+var didWarnAboutUninitializedState = {};
+var valuePropNames = ['value', 'defaultValue'];
+var newlineEatingTags = {
+  listing: true,
+  pre: true,
+  textarea: true
+}; // We accept any tag to be rendered but since this gets injected into arbitrary
+// HTML, we want to make sure that it's a safe tag.
+// http://www.w3.org/TR/REC-xml/#NT-Name
+
+var VALID_TAG_REGEX = /^[a-zA-Z][a-zA-Z:_\.\-\d]*$/; // Simplified subset
+
+var validatedTagCache = {};
+
+function validateDangerousTag(tag) {
+  if (!validatedTagCache.hasOwnProperty(tag)) {
+    if (!VALID_TAG_REGEX.test(tag)) {
+      {
+        throw Error( "Invalid tag: " + tag );
+      }
+    }
+
+    validatedTagCache[tag] = true;
+  }
+}
+
+var styleNameCache = {};
+
+var processStyleName = function (styleName) {
+  if (styleNameCache.hasOwnProperty(styleName)) {
+    return styleNameCache[styleName];
+  }
+
+  var result = hyphenateStyleName(styleName);
+  styleNameCache[styleName] = result;
+  return result;
+};
+
+function createMarkupForStyles(styles) {
+  var serialized = '';
+  var delimiter = '';
+
+  for (var styleName in styles) {
+    if (!styles.hasOwnProperty(styleName)) {
+      continue;
+    }
+
+    var isCustomProperty = styleName.indexOf('--') === 0;
+    var styleValue = styles[styleName];
+
+    {
+      if (!isCustomProperty) {
+        warnValidStyle$1(styleName, styleValue);
+      }
+    }
+
+    if (styleValue != null) {
+      serialized += delimiter + (isCustomProperty ? styleName : processStyleName(styleName)) + ':';
+      serialized += dangerousStyleValue(styleName, styleValue, isCustomProperty);
+      delimiter = ';';
+    }
+  }
+
+  return serialized || null;
+}
+
+function warnNoop(publicInstance, callerName) {
+  {
+    var _constructor = publicInstance.constructor;
+    var componentName = _constructor && getComponentName(_constructor) || 'ReactClass';
+    var warningKey = componentName + '.' + callerName;
+
+    if (didWarnAboutNoopUpdateForComponent[warningKey]) {
+      return;
+    }
+
+    error('%s(...): Can only update a mounting component. ' + 'This usually means you called %s() outside componentWillMount() on the server. ' + 'This is a no-op.\n\nPlease check the code for the %s component.', callerName, callerName, componentName);
+
+    didWarnAboutNoopUpdateForComponent[warningKey] = true;
+  }
+}
+
+function shouldConstruct(Component) {
+  return Component.prototype && Component.prototype.isReactComponent;
+}
+
+function getNonChildrenInnerMarkup(props) {
+  var innerHTML = props.dangerouslySetInnerHTML;
+
+  if (innerHTML != null) {
+    if (innerHTML.__html != null) {
+      return innerHTML.__html;
+    }
+  } else {
+    var content = props.children;
+
+    if (typeof content === 'string' || typeof content === 'number') {
+      return escapeTextForBrowser(content);
+    }
+  }
+
+  return null;
+}
+
+function flattenTopLevelChildren(children) {
+  if (!React.isValidElement(children)) {
+    return toArray(children);
+  }
+
+  var element = children;
+
+  if (element.type !== REACT_FRAGMENT_TYPE) {
+    return [element];
+  }
+
+  var fragmentChildren = element.props.children;
+
+  if (!React.isValidElement(fragmentChildren)) {
+    return toArray(fragmentChildren);
+  }
+
+  var fragmentChildElement = fragmentChildren;
+  return [fragmentChildElement];
+}
+
+function flattenOptionChildren(children) {
+  if (children === undefined || children === null) {
+    return children;
+  }
+
+  var content = ''; // Flatten children and warn if they aren't strings or numbers;
+  // invalid types are ignored.
+
+  React.Children.forEach(children, function (child) {
+    if (child == null) {
+      return;
+    }
+
+    content += child;
+
+    {
+      if (!didWarnInvalidOptionChildren && typeof child !== 'string' && typeof child !== 'number') {
+        didWarnInvalidOptionChildren = true;
+
+        error('Only strings and numbers are supported as <option> children.');
+      }
+    }
+  });
+  return content;
+}
+
+var hasOwnProperty$2 = Object.prototype.hasOwnProperty;
+var STYLE = 'style';
+var RESERVED_PROPS = {
+  children: null,
+  dangerouslySetInnerHTML: null,
+  suppressContentEditableWarning: null,
+  suppressHydrationWarning: null
+};
+
+function createOpenTagMarkup(tagVerbatim, tagLowercase, props, namespace, makeStaticMarkup, isRootElement) {
+  var ret = '<' + tagVerbatim;
+
+  for (var propKey in props) {
+    if (!hasOwnProperty$2.call(props, propKey)) {
+      continue;
+    }
+
+    var propValue = props[propKey];
+
+    if (propValue == null) {
+      continue;
+    }
+
+    if (propKey === STYLE) {
+      propValue = createMarkupForStyles(propValue);
+    }
+
+    var markup = null;
+
+    if (isCustomComponent(tagLowercase, props)) {
+      if (!RESERVED_PROPS.hasOwnProperty(propKey)) {
+        markup = createMarkupForCustomAttribute(propKey, propValue);
+      }
+    } else {
+      markup = createMarkupForProperty(propKey, propValue);
+    }
+
+    if (markup) {
+      ret += ' ' + markup;
+    }
+  } // For static pages, no need to put React ID and checksum. Saves lots of
+  // bytes.
+
+
+  if (makeStaticMarkup) {
+    return ret;
+  }
+
+  if (isRootElement) {
+    ret += ' ' + createMarkupForRoot();
+  }
+
+  return ret;
+}
+
+function validateRenderResult(child, type) {
+  if (child === undefined) {
+    {
+      {
+        throw Error( (getComponentName(type) || 'Component') + "(...): Nothing was returned from render. This usually means a return statement is missing. Or, to render nothing, return null." );
+      }
+    }
+  }
+}
+
+function resolve(child, context, threadID) {
+  while (React.isValidElement(child)) {
+    // Safe because we just checked it's an element.
+    var element = child;
+    var Component = element.type;
+
+    {
+      pushElementToDebugStack(element);
+    }
+
+    if (typeof Component !== 'function') {
+      break;
+    }
+
+    processChild(element, Component);
+  } // Extra closure so queue and replace can be captured properly
+
+
+  function processChild(element, Component) {
+    var isClass = shouldConstruct(Component);
+    var publicContext = processContext(Component, context, threadID, isClass);
+    var queue = [];
+    var replace = false;
+    var updater = {
+      isMounted: function (publicInstance) {
+        return false;
+      },
+      enqueueForceUpdate: function (publicInstance) {
+        if (queue === null) {
+          warnNoop(publicInstance, 'forceUpdate');
+          return null;
+        }
+      },
+      enqueueReplaceState: function (publicInstance, completeState) {
+        replace = true;
+        queue = [completeState];
+      },
+      enqueueSetState: function (publicInstance, currentPartialState) {
+        if (queue === null) {
+          warnNoop(publicInstance, 'setState');
+          return null;
+        }
+
+        queue.push(currentPartialState);
+      }
+    };
+    var inst;
+
+    if (isClass) {
+      inst = new Component(element.props, publicContext, updater);
+
+      if (typeof Component.getDerivedStateFromProps === 'function') {
+        {
+          if (inst.state === null || inst.state === undefined) {
+            var componentName = getComponentName(Component) || 'Unknown';
+
+            if (!didWarnAboutUninitializedState[componentName]) {
+              error('`%s` uses `getDerivedStateFromProps` but its initial state is ' + '%s. This is not recommended. Instead, define the initial state by ' + 'assigning an object to `this.state` in the constructor of `%s`. ' + 'This ensures that `getDerivedStateFromProps` arguments have a consistent shape.', componentName, inst.state === null ? 'null' : 'undefined', componentName);
+
+              didWarnAboutUninitializedState[componentName] = true;
+            }
+          }
+        }
+
+        var partialState = Component.getDerivedStateFromProps.call(null, element.props, inst.state);
+
+        {
+          if (partialState === undefined) {
+            var _componentName = getComponentName(Component) || 'Unknown';
+
+            if (!didWarnAboutUndefinedDerivedState[_componentName]) {
+              error('%s.getDerivedStateFromProps(): A valid state object (or null) must be returned. ' + 'You have returned undefined.', _componentName);
+
+              didWarnAboutUndefinedDerivedState[_componentName] = true;
+            }
+          }
+        }
+
+        if (partialState != null) {
+          inst.state = _assign({}, inst.state, partialState);
+        }
+      }
+    } else {
+      {
+        if (Component.prototype && typeof Component.prototype.render === 'function') {
+          var _componentName2 = getComponentName(Component) || 'Unknown';
+
+          if (!didWarnAboutBadClass[_componentName2]) {
+            error("The <%s /> component appears to have a render method, but doesn't extend React.Component. " + 'This is likely to cause errors. Change %s to extend React.Component instead.', _componentName2, _componentName2);
+
+            didWarnAboutBadClass[_componentName2] = true;
+          }
+        }
+      }
+
+      var componentIdentity = {};
+      prepareToUseHooks(componentIdentity);
+      inst = Component(element.props, publicContext, updater);
+      inst = finishHooks(Component, element.props, inst, publicContext);
+
+      if (inst == null || inst.render == null) {
+        child = inst;
+        validateRenderResult(child, Component);
+        return;
+      }
+
+      {
+        var _componentName3 = getComponentName(Component) || 'Unknown';
+
+        if (!didWarnAboutModulePatternComponent[_componentName3]) {
+          error('The <%s /> component appears to be a function component that returns a class instance. ' + 'Change %s to a class that extends React.Component instead. ' + "If you can't use a class try assigning the prototype on the function as a workaround. " + "`%s.prototype = React.Component.prototype`. Don't use an arrow function since it " + 'cannot be called with `new` by React.', _componentName3, _componentName3, _componentName3);
+
+          didWarnAboutModulePatternComponent[_componentName3] = true;
+        }
+      }
+    }
+
+    inst.props = element.props;
+    inst.context = publicContext;
+    inst.updater = updater;
+    var initialState = inst.state;
+
+    if (initialState === undefined) {
+      inst.state = initialState = null;
+    }
+
+    if (typeof inst.UNSAFE_componentWillMount === 'function' || typeof inst.componentWillMount === 'function') {
+      if (typeof inst.componentWillMount === 'function') {
+        {
+          if ( inst.componentWillMount.__suppressDeprecationWarning !== true) {
+            var _componentName4 = getComponentName(Component) || 'Unknown';
+
+            if (!didWarnAboutDeprecatedWillMount[_componentName4]) {
+              warn( // keep this warning in sync with ReactStrictModeWarning.js
+              'componentWillMount has been renamed, and is not recommended for use. ' + 'See https://fb.me/react-unsafe-component-lifecycles for details.\n\n' + '* Move code from componentWillMount to componentDidMount (preferred in most cases) ' + 'or the constructor.\n' + '\nPlease update the following components: %s', _componentName4);
+
+              didWarnAboutDeprecatedWillMount[_componentName4] = true;
+            }
+          }
+        } // In order to support react-lifecycles-compat polyfilled components,
+        // Unsafe lifecycles should not be invoked for any component with the new gDSFP.
+
+
+        if (typeof Component.getDerivedStateFromProps !== 'function') {
+          inst.componentWillMount();
+        }
+      }
+
+      if (typeof inst.UNSAFE_componentWillMount === 'function' && typeof Component.getDerivedStateFromProps !== 'function') {
+        // In order to support react-lifecycles-compat polyfilled components,
+        // Unsafe lifecycles should not be invoked for any component with the new gDSFP.
+        inst.UNSAFE_componentWillMount();
+      }
+
+      if (queue.length) {
+        var oldQueue = queue;
+        var oldReplace = replace;
+        queue = null;
+        replace = false;
+
+        if (oldReplace && oldQueue.length === 1) {
+          inst.state = oldQueue[0];
+        } else {
+          var nextState = oldReplace ? oldQueue[0] : inst.state;
+          var dontMutate = true;
+
+          for (var i = oldReplace ? 1 : 0; i < oldQueue.length; i++) {
+            var partial = oldQueue[i];
+
+            var _partialState = typeof partial === 'function' ? partial.call(inst, nextState, element.props, publicContext) : partial;
+
+            if (_partialState != null) {
+              if (dontMutate) {
+                dontMutate = false;
+                nextState = _assign({}, nextState, _partialState);
+              } else {
+                _assign(nextState, _partialState);
+              }
+            }
+          }
+
+          inst.state = nextState;
+        }
+      } else {
+        queue = null;
+      }
+    }
+
+    child = inst.render();
+
+    {
+      if (child === undefined && inst.render._isMockFunction) {
+        // This is probably bad practice. Consider warning here and
+        // deprecating this convenience.
+        child = null;
+      }
+    }
+
+    validateRenderResult(child, Component);
+    var childContext;
+
+    {
+      if (typeof inst.getChildContext === 'function') {
+        var _childContextTypes = Component.childContextTypes;
+
+        if (typeof _childContextTypes === 'object') {
+          childContext = inst.getChildContext();
+
+          for (var contextKey in childContext) {
+            if (!(contextKey in _childContextTypes)) {
+              {
+                throw Error( (getComponentName(Component) || 'Unknown') + ".getChildContext(): key \"" + contextKey + "\" is not defined in childContextTypes." );
+              }
+            }
+          }
+        } else {
+          {
+            error('%s.getChildContext(): childContextTypes must be defined in order to ' + 'use getChildContext().', getComponentName(Component) || 'Unknown');
+          }
+        }
+      }
+
+      if (childContext) {
+        context = _assign({}, context, childContext);
+      }
+    }
+  }
+
+  return {
+    child: child,
+    context: context
+  };
+}
+
+var ReactDOMServerRenderer =
+/*#__PURE__*/
+function () {
+  // TODO: type this more strictly:
+  // DEV-only
+  function ReactDOMServerRenderer(children, makeStaticMarkup) {
+    var flatChildren = flattenTopLevelChildren(children);
+    var topFrame = {
+      type: null,
+      // Assume all trees start in the HTML namespace (not totally true, but
+      // this is what we did historically)
+      domNamespace: Namespaces.html,
+      children: flatChildren,
+      childIndex: 0,
+      context: emptyObject,
+      footer: ''
+    };
+
+    {
+      topFrame.debugElementStack = [];
+    }
+
+    this.threadID = allocThreadID();
+    this.stack = [topFrame];
+    this.exhausted = false;
+    this.currentSelectValue = null;
+    this.previousWasTextNode = false;
+    this.makeStaticMarkup = makeStaticMarkup;
+    this.suspenseDepth = 0; // Context (new API)
+
+    this.contextIndex = -1;
+    this.contextStack = [];
+    this.contextValueStack = [];
+
+    {
+      this.contextProviderStack = [];
+    }
+  }
+
+  var _proto = ReactDOMServerRenderer.prototype;
+
+  _proto.destroy = function destroy() {
+    if (!this.exhausted) {
+      this.exhausted = true;
+      this.clearProviders();
+      freeThreadID(this.threadID);
+    }
+  }
+  /**
+   * Note: We use just two stacks regardless of how many context providers you have.
+   * Providers are always popped in the reverse order to how they were pushed
+   * so we always know on the way down which provider you'll encounter next on the way up.
+   * On the way down, we push the current provider, and its context value *before*
+   * we mutated it, onto the stacks. Therefore, on the way up, we always know which
+   * provider needs to be "restored" to which value.
+   * https://github.com/facebook/react/pull/12985#issuecomment-396301248
+   */
+  ;
+
+  _proto.pushProvider = function pushProvider(provider) {
+    var index = ++this.contextIndex;
+    var context = provider.type._context;
+    var threadID = this.threadID;
+    validateContextBounds(context, threadID);
+    var previousValue = context[threadID]; // Remember which value to restore this context to on our way up.
+
+    this.contextStack[index] = context;
+    this.contextValueStack[index] = previousValue;
+
+    {
+      // Only used for push/pop mismatch warnings.
+      this.contextProviderStack[index] = provider;
+    } // Mutate the current value.
+
+
+    context[threadID] = provider.props.value;
+  };
+
+  _proto.popProvider = function popProvider(provider) {
+    var index = this.contextIndex;
+
+    {
+      if (index < 0 || provider !== this.contextProviderStack[index]) {
+        error('Unexpected pop.');
+      }
+    }
+
+    var context = this.contextStack[index];
+    var previousValue = this.contextValueStack[index]; // "Hide" these null assignments from Flow by using `any`
+    // because conceptually they are deletions--as long as we
+    // promise to never access values beyond `this.contextIndex`.
+
+    this.contextStack[index] = null;
+    this.contextValueStack[index] = null;
+
+    {
+      this.contextProviderStack[index] = null;
+    }
+
+    this.contextIndex--; // Restore to the previous value we stored as we were walking down.
+    // We've already verified that this context has been expanded to accommodate
+    // this thread id, so we don't need to do it again.
+
+    context[this.threadID] = previousValue;
+  };
+
+  _proto.clearProviders = function clearProviders() {
+    // Restore any remaining providers on the stack to previous values
+    for (var index = this.contextIndex; index >= 0; index--) {
+      var context = this.contextStack[index];
+      var previousValue = this.contextValueStack[index];
+      context[this.threadID] = previousValue;
+    }
+  };
+
+  _proto.read = function read(bytes) {
+    if (this.exhausted) {
+      return null;
+    }
+
+    var prevThreadID = currentThreadID;
+    setCurrentThreadID(this.threadID);
+    var prevDispatcher = ReactCurrentDispatcher.current;
+    ReactCurrentDispatcher.current = Dispatcher;
+
+    try {
+      // Markup generated within <Suspense> ends up buffered until we know
+      // nothing in that boundary suspended
+      var out = [''];
+      var suspended = false;
+
+      while (out[0].length < bytes) {
+        if (this.stack.length === 0) {
+          this.exhausted = true;
+          freeThreadID(this.threadID);
+          break;
+        }
+
+        var frame = this.stack[this.stack.length - 1];
+
+        if (suspended || frame.childIndex >= frame.children.length) {
+          var footer = frame.footer;
+
+          if (footer !== '') {
+            this.previousWasTextNode = false;
+          }
+
+          this.stack.pop();
+
+          if (frame.type === 'select') {
+            this.currentSelectValue = null;
+          } else if (frame.type != null && frame.type.type != null && frame.type.type.$$typeof === REACT_PROVIDER_TYPE) {
+            var provider = frame.type;
+            this.popProvider(provider);
+          } else if (frame.type === REACT_SUSPENSE_TYPE) {
+            this.suspenseDepth--;
+            var buffered = out.pop();
+
+            if (suspended) {
+              suspended = false; // If rendering was suspended at this boundary, render the fallbackFrame
+
+              var fallbackFrame = frame.fallbackFrame;
+
+              if (!fallbackFrame) {
+                {
+                  throw Error(true ? "ReactDOMServer did not find an internal fallback frame for Suspense. This is a bug in React. Please file an issue." : formatProdErrorMessage(303));
+                }
+              }
+
+              this.stack.push(fallbackFrame);
+              out[this.suspenseDepth] += '<!--$!-->'; // Skip flushing output since we're switching to the fallback
+
+              continue;
+            } else {
+              out[this.suspenseDepth] += buffered;
+            }
+          } // Flush output
+
+
+          out[this.suspenseDepth] += footer;
+          continue;
+        }
+
+        var child = frame.children[frame.childIndex++];
+        var outBuffer = '';
+
+        if (true) {
+          pushCurrentDebugStack(this.stack); // We're starting work on this frame, so reset its inner stack.
+
+          frame.debugElementStack.length = 0;
+        }
+
+        try {
+          outBuffer += this.render(child, frame.context, frame.domNamespace);
+        } catch (err) {
+          if (err != null && typeof err.then === 'function') {
+            if (enableSuspenseServerRenderer) {
+              if (!(this.suspenseDepth > 0)) {
+                {
+                  throw Error(true ? "A React component suspended while rendering, but no fallback UI was specified.\n\nAdd a <Suspense fallback=...> component higher in the tree to provide a loading indicator or placeholder to display." : formatProdErrorMessage(342));
+                }
+              }
+
+              suspended = true;
+            } else {
+              if (!false) {
+                {
+                  throw Error(true ? "ReactDOMServer does not yet support Suspense." : formatProdErrorMessage(294));
+                }
+              }
+            }
+          } else {
+            throw err;
+          }
+        } finally {
+          if (true) {
+            popCurrentDebugStack();
+          }
+        }
+
+        if (out.length <= this.suspenseDepth) {
+          out.push('');
+        }
+
+        out[this.suspenseDepth] += outBuffer;
+      }
+
+      return out[0];
+    } finally {
+      ReactCurrentDispatcher.current = prevDispatcher;
+      setCurrentThreadID(prevThreadID);
+    }
+  };
+
+  _proto.render = function render(child, context, parentNamespace) {
+    if (typeof child === 'string' || typeof child === 'number') {
+      var text = '' + child;
+
+      if (text === '') {
+        return '';
+      }
+
+      if (this.makeStaticMarkup) {
+        return escapeTextForBrowser(text);
+      }
+
+      if (this.previousWasTextNode) {
+        return '<!-- -->' + escapeTextForBrowser(text);
+      }
+
+      this.previousWasTextNode = true;
+      return escapeTextForBrowser(text);
+    } else {
+      var nextChild;
+
+      var _resolve = resolve(child, context, this.threadID);
+
+      nextChild = _resolve.child;
+      context = _resolve.context;
+
+      if (nextChild === null || nextChild === false) {
+        return '';
+      } else if (!React.isValidElement(nextChild)) {
+        if (nextChild != null && nextChild.$$typeof != null) {
+          // Catch unexpected special types early.
+          var $$typeof = nextChild.$$typeof;
+
+          if (!($$typeof !== REACT_PORTAL_TYPE)) {
+            {
+              throw Error( "Portals are not currently supported by the server renderer. Render them conditionally so that they only appear on the client render." );
+            }
+          } // Catch-all to prevent an infinite loop if React.Children.toArray() supports some new type.
+
+
+          {
+            {
+              throw Error( "Unknown element-like object type: " + $$typeof.toString() + ". This is likely a bug in React. Please file an issue." );
+            }
+          }
+        }
+
+        var nextChildren = toArray(nextChild);
+        var frame = {
+          type: null,
+          domNamespace: parentNamespace,
+          children: nextChildren,
+          childIndex: 0,
+          context: context,
+          footer: ''
+        };
+
+        {
+          frame.debugElementStack = [];
+        }
+
+        this.stack.push(frame);
+        return '';
+      } // Safe because we just checked it's an element.
+
+
+      var nextElement = nextChild;
+      var elementType = nextElement.type;
+
+      if (typeof elementType === 'string') {
+        return this.renderDOM(nextElement, context, parentNamespace);
+      }
+
+      switch (elementType) {
+        case REACT_STRICT_MODE_TYPE:
+        case REACT_CONCURRENT_MODE_TYPE:
+        case REACT_PROFILER_TYPE:
+        case REACT_SUSPENSE_LIST_TYPE:
+        case REACT_FRAGMENT_TYPE:
+          {
+            var _nextChildren = toArray(nextChild.props.children);
+
+            var _frame = {
+              type: null,
+              domNamespace: parentNamespace,
+              children: _nextChildren,
+              childIndex: 0,
+              context: context,
+              footer: ''
+            };
+
+            {
+              _frame.debugElementStack = [];
+            }
+
+            this.stack.push(_frame);
+            return '';
+          }
+
+        case REACT_SUSPENSE_TYPE:
+          {
+            {
+              {
+                {
+                  throw Error( "ReactDOMServer does not yet support Suspense." );
+                }
+              }
+            }
+          }
+      }
+
+      if (typeof elementType === 'object' && elementType !== null) {
+        switch (elementType.$$typeof) {
+          case REACT_FORWARD_REF_TYPE:
+            {
+              var element = nextChild;
+
+              var _nextChildren4;
+
+              var componentIdentity = {};
+              prepareToUseHooks(componentIdentity);
+              _nextChildren4 = elementType.render(element.props, element.ref);
+              _nextChildren4 = finishHooks(elementType.render, element.props, _nextChildren4, element.ref);
+              _nextChildren4 = toArray(_nextChildren4);
+              var _frame4 = {
+                type: null,
+                domNamespace: parentNamespace,
+                children: _nextChildren4,
+                childIndex: 0,
+                context: context,
+                footer: ''
+              };
+
+              {
+                _frame4.debugElementStack = [];
+              }
+
+              this.stack.push(_frame4);
+              return '';
+            }
+
+          case REACT_MEMO_TYPE:
+            {
+              var _element = nextChild;
+              var _nextChildren5 = [React.createElement(elementType.type, _assign({
+                ref: _element.ref
+              }, _element.props))];
+              var _frame5 = {
+                type: null,
+                domNamespace: parentNamespace,
+                children: _nextChildren5,
+                childIndex: 0,
+                context: context,
+                footer: ''
+              };
+
+              {
+                _frame5.debugElementStack = [];
+              }
+
+              this.stack.push(_frame5);
+              return '';
+            }
+
+          case REACT_PROVIDER_TYPE:
+            {
+              var provider = nextChild;
+              var nextProps = provider.props;
+
+              var _nextChildren6 = toArray(nextProps.children);
+
+              var _frame6 = {
+                type: provider,
+                domNamespace: parentNamespace,
+                children: _nextChildren6,
+                childIndex: 0,
+                context: context,
+                footer: ''
+              };
+
+              {
+                _frame6.debugElementStack = [];
+              }
+
+              this.pushProvider(provider);
+              this.stack.push(_frame6);
+              return '';
+            }
+
+          case REACT_CONTEXT_TYPE:
+            {
+              var reactContext = nextChild.type; // The logic below for Context differs depending on PROD or DEV mode. In
+              // DEV mode, we create a separate object for Context.Consumer that acts
+              // like a proxy to Context. This proxy object adds unnecessary code in PROD
+              // so we use the old behaviour (Context.Consumer references Context) to
+              // reduce size and overhead. The separate object references context via
+              // a property called "_context", which also gives us the ability to check
+              // in DEV mode if this property exists or not and warn if it does not.
+
+              {
+                if (reactContext._context === undefined) {
+                  // This may be because it's a Context (rather than a Consumer).
+                  // Or it may be because it's older React where they're the same thing.
+                  // We only want to warn if we're sure it's a new React.
+                  if (reactContext !== reactContext.Consumer) {
+                    if (!hasWarnedAboutUsingContextAsConsumer) {
+                      hasWarnedAboutUsingContextAsConsumer = true;
+
+                      error('Rendering <Context> directly is not supported and will be removed in ' + 'a future major release. Did you mean to render <Context.Consumer> instead?');
+                    }
+                  }
+                } else {
+                  reactContext = reactContext._context;
+                }
+              }
+
+              var _nextProps = nextChild.props;
+              var threadID = this.threadID;
+              validateContextBounds(reactContext, threadID);
+              var nextValue = reactContext[threadID];
+
+              var _nextChildren7 = toArray(_nextProps.children(nextValue));
+
+              var _frame7 = {
+                type: nextChild,
+                domNamespace: parentNamespace,
+                children: _nextChildren7,
+                childIndex: 0,
+                context: context,
+                footer: ''
+              };
+
+              {
+                _frame7.debugElementStack = [];
+              }
+
+              this.stack.push(_frame7);
+              return '';
+            }
+          // eslint-disable-next-line-no-fallthrough
+
+          case REACT_FUNDAMENTAL_TYPE:
+            {
+
+              {
+                {
+                  throw Error( "ReactDOMServer does not yet support the fundamental API." );
+                }
+              }
+            }
+          // eslint-disable-next-line-no-fallthrough
+
+          case REACT_LAZY_TYPE:
+            {
+              var _element2 = nextChild;
+              var lazyComponent = nextChild.type; // Attempt to initialize lazy component regardless of whether the
+              // suspense server-side renderer is enabled so synchronously
+              // resolved constructors are supported.
+
+              initializeLazyComponentType(lazyComponent);
+
+              switch (lazyComponent._status) {
+                case Resolved:
+                  {
+                    var _nextChildren9 = [React.createElement(lazyComponent._result, _assign({
+                      ref: _element2.ref
+                    }, _element2.props))];
+                    var _frame9 = {
+                      type: null,
+                      domNamespace: parentNamespace,
+                      children: _nextChildren9,
+                      childIndex: 0,
+                      context: context,
+                      footer: ''
+                    };
+
+                    {
+                      _frame9.debugElementStack = [];
+                    }
+
+                    this.stack.push(_frame9);
+                    return '';
+                  }
+
+                case Rejected:
+                  throw lazyComponent._result;
+
+                case Pending:
+                default:
+                  {
+                    {
+                      throw Error( "ReactDOMServer does not yet support lazy-loaded components." );
+                    }
+                  }
+
+              }
+            }
+          // eslint-disable-next-line-no-fallthrough
+
+          case REACT_SCOPE_TYPE:
+            {
+
+              {
+                {
+                  throw Error( "ReactDOMServer does not yet support scope components." );
+                }
+              }
+            }
+        }
+      }
+
+      var info = '';
+
+      {
+        var owner = nextElement._owner;
+
+        if (elementType === undefined || typeof elementType === 'object' && elementType !== null && Object.keys(elementType).length === 0) {
+          info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and " + 'named imports.';
+        }
+
+        var ownerName = owner ? getComponentName(owner) : null;
+
+        if (ownerName) {
+          info += '\n\nCheck the render method of `' + ownerName + '`.';
+        }
+      }
+
+      {
+        {
+          throw Error( "Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: " + (elementType == null ? elementType : typeof elementType) + "." + info );
+        }
+      }
+    }
+  };
+
+  _proto.renderDOM = function renderDOM(element, context, parentNamespace) {
+    var tag = element.type.toLowerCase();
+    var namespace = parentNamespace;
+
+    if (parentNamespace === Namespaces.html) {
+      namespace = getIntrinsicNamespace(tag);
+    }
+
+    {
+      if (namespace === Namespaces.html) {
+        // Should this check be gated by parent namespace? Not sure we want to
+        // allow <SVG> or <mATH>.
+        if (tag !== element.type) {
+          error('<%s /> is using incorrect casing. ' + 'Use PascalCase for React components, ' + 'or lowercase for HTML elements.', element.type);
+        }
+      }
+    }
+
+    validateDangerousTag(tag);
+    var props = element.props;
+
+    if (tag === 'input') {
+      {
+        ReactControlledValuePropTypes.checkPropTypes('input', props);
+
+        if (props.checked !== undefined && props.defaultChecked !== undefined && !didWarnDefaultChecked) {
+          error('%s contains an input of type %s with both checked and defaultChecked props. ' + 'Input elements must be either controlled or uncontrolled ' + '(specify either the checked prop, or the defaultChecked prop, but not ' + 'both). Decide between using a controlled or uncontrolled input ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components', 'A component', props.type);
+
+          didWarnDefaultChecked = true;
+        }
+
+        if (props.value !== undefined && props.defaultValue !== undefined && !didWarnDefaultInputValue) {
+          error('%s contains an input of type %s with both value and defaultValue props. ' + 'Input elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled input ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components', 'A component', props.type);
+
+          didWarnDefaultInputValue = true;
+        }
+      }
+
+      props = _assign({
+        type: undefined
+      }, props, {
+        defaultChecked: undefined,
+        defaultValue: undefined,
+        value: props.value != null ? props.value : props.defaultValue,
+        checked: props.checked != null ? props.checked : props.defaultChecked
+      });
+    } else if (tag === 'textarea') {
+      {
+        ReactControlledValuePropTypes.checkPropTypes('textarea', props);
+
+        if (props.value !== undefined && props.defaultValue !== undefined && !didWarnDefaultTextareaValue) {
+          error('Textarea elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled textarea ' + 'and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components');
+
+          didWarnDefaultTextareaValue = true;
+        }
+      }
+
+      var initialValue = props.value;
+
+      if (initialValue == null) {
+        var defaultValue = props.defaultValue; // TODO (yungsters): Remove support for children content in <textarea>.
+
+        var textareaChildren = props.children;
+
+        if (textareaChildren != null) {
+          {
+            error('Use the `defaultValue` or `value` props instead of setting ' + 'children on <textarea>.');
+          }
+
+          if (!(defaultValue == null)) {
+            {
+              throw Error( "If you supply `defaultValue` on a <textarea>, do not pass children." );
+            }
+          }
+
+          if (Array.isArray(textareaChildren)) {
+            if (!(textareaChildren.length <= 1)) {
+              {
+                throw Error( "<textarea> can only have at most one child." );
+              }
+            }
+
+            textareaChildren = textareaChildren[0];
+          }
+
+          defaultValue = '' + textareaChildren;
+        }
+
+        if (defaultValue == null) {
+          defaultValue = '';
+        }
+
+        initialValue = defaultValue;
+      }
+
+      props = _assign({}, props, {
+        value: undefined,
+        children: '' + initialValue
+      });
+    } else if (tag === 'select') {
+      {
+        ReactControlledValuePropTypes.checkPropTypes('select', props);
+
+        for (var i = 0; i < valuePropNames.length; i++) {
+          var propName = valuePropNames[i];
+
+          if (props[propName] == null) {
+            continue;
+          }
+
+          var isArray = Array.isArray(props[propName]);
+
+          if (props.multiple && !isArray) {
+            error('The `%s` prop supplied to <select> must be an array if ' + '`multiple` is true.', propName);
+          } else if (!props.multiple && isArray) {
+            error('The `%s` prop supplied to <select> must be a scalar ' + 'value if `multiple` is false.', propName);
+          }
+        }
+
+        if (props.value !== undefined && props.defaultValue !== undefined && !didWarnDefaultSelectValue) {
+          error('Select elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled select ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components');
+
+          didWarnDefaultSelectValue = true;
+        }
+      }
+
+      this.currentSelectValue = props.value != null ? props.value : props.defaultValue;
+      props = _assign({}, props, {
+        value: undefined
+      });
+    } else if (tag === 'option') {
+      var selected = null;
+      var selectValue = this.currentSelectValue;
+      var optionChildren = flattenOptionChildren(props.children);
+
+      if (selectValue != null) {
+        var value;
+
+        if (props.value != null) {
+          value = props.value + '';
+        } else {
+          value = optionChildren;
+        }
+
+        selected = false;
+
+        if (Array.isArray(selectValue)) {
+          // multiple
+          for (var j = 0; j < selectValue.length; j++) {
+            if ('' + selectValue[j] === value) {
+              selected = true;
+              break;
+            }
+          }
+        } else {
+          selected = '' + selectValue === value;
+        }
+
+        props = _assign({
+          selected: undefined,
+          children: undefined
+        }, props, {
+          selected: selected,
+          children: optionChildren
+        });
+      }
+    }
+
+    {
+      validatePropertiesInDevelopment(tag, props);
+    }
+
+    assertValidProps(tag, props);
+    var out = createOpenTagMarkup(element.type, tag, props, namespace, this.makeStaticMarkup, this.stack.length === 1);
+    var footer = '';
+
+    if (omittedCloseTags.hasOwnProperty(tag)) {
+      out += '/>';
+    } else {
+      out += '>';
+      footer = '</' + element.type + '>';
+    }
+
+    var children;
+    var innerMarkup = getNonChildrenInnerMarkup(props);
+
+    if (innerMarkup != null) {
+      children = [];
+
+      if (newlineEatingTags.hasOwnProperty(tag) && innerMarkup.charAt(0) === '\n') {
+        // text/html ignores the first character in these tags if it's a newline
+        // Prefer to break application/xml over text/html (for now) by adding
+        // a newline specifically to get eaten by the parser. (Alternately for
+        // textareas, replacing "^\n" with "\r\n" doesn't get eaten, and the first
+        // \r is normalized out by HTMLTextAreaElement#value.)
+        // See: <http://www.w3.org/TR/html-polyglot/#newlines-in-textarea-and-pre>
+        // See: <http://www.w3.org/TR/html5/syntax.html#element-restrictions>
+        // See: <http://www.w3.org/TR/html5/syntax.html#newlines>
+        // See: Parsing of "textarea" "listing" and "pre" elements
+        //  from <http://www.w3.org/TR/html5/syntax.html#parsing-main-inbody>
+        out += '\n';
+      }
+
+      out += innerMarkup;
+    } else {
+      children = toArray(props.children);
+    }
+
+    var frame = {
+      domNamespace: getChildNamespace(parentNamespace, element.type),
+      type: tag,
+      children: children,
+      childIndex: 0,
+      context: context,
+      footer: footer
+    };
+
+    {
+      frame.debugElementStack = [];
+    }
+
+    this.stack.push(frame);
+    this.previousWasTextNode = false;
+    return out;
+  };
+
+  return ReactDOMServerRenderer;
+}();
+
+/**
+ * Render a ReactElement to its initial HTML. This should only be used on the
+ * server.
+ * See https://reactjs.org/docs/react-dom-server.html#rendertostring
+ */
+
+function renderToString(element) {
+  var renderer = new ReactDOMServerRenderer(element, false);
+
+  try {
+    var markup = renderer.read(Infinity);
+    return markup;
+  } finally {
+    renderer.destroy();
+  }
+}
+/**
+ * Similar to renderToString, except this doesn't create extra DOM attributes
+ * such as data-react-id that React uses internally.
+ * See https://reactjs.org/docs/react-dom-server.html#rendertostaticmarkup
+ */
+
+function renderToStaticMarkup(element) {
+  var renderer = new ReactDOMServerRenderer(element, true);
+
+  try {
+    var markup = renderer.read(Infinity);
+    return markup;
+  } finally {
+    renderer.destroy();
+  }
+}
+
+function _inheritsLoose(subClass, superClass) {
+  subClass.prototype = Object.create(superClass.prototype);
+  subClass.prototype.constructor = subClass;
+  subClass.__proto__ = superClass;
+}
+
+var ReactMarkupReadableStream =
+/*#__PURE__*/
+function (_Readable) {
+  _inheritsLoose(ReactMarkupReadableStream, _Readable);
+
+  function ReactMarkupReadableStream(element, makeStaticMarkup) {
+    var _this;
+
+    // Calls the stream.Readable(options) constructor. Consider exposing built-in
+    // features like highWaterMark in the future.
+    _this = _Readable.call(this, {}) || this;
+    _this.partialRenderer = new ReactDOMServerRenderer(element, makeStaticMarkup);
+    return _this;
+  }
+
+  var _proto = ReactMarkupReadableStream.prototype;
+
+  _proto._destroy = function _destroy(err, callback) {
+    this.partialRenderer.destroy();
+    callback(err);
+  };
+
+  _proto._read = function _read(size) {
+    try {
+      this.push(this.partialRenderer.read(size));
+    } catch (err) {
+      this.destroy(err);
+    }
+  };
+
+  return ReactMarkupReadableStream;
+}(stream.Readable);
+/**
+ * Render a ReactElement to its initial HTML. This should only be used on the
+ * server.
+ * See https://reactjs.org/docs/react-dom-server.html#rendertonodestream
+ */
+
+
+function renderToNodeStream(element) {
+  return new ReactMarkupReadableStream(element, false);
+}
+/**
+ * Similar to renderToNodeStream, except this doesn't create extra DOM attributes
+ * such as data-react-id that React uses internally.
+ * See https://reactjs.org/docs/react-dom-server.html#rendertostaticnodestream
+ */
+
+function renderToStaticNodeStream(element) {
+  return new ReactMarkupReadableStream(element, true);
+}
+
+var ReactDOMServer = {
+  renderToString: renderToString,
+  renderToStaticMarkup: renderToStaticMarkup,
+  renderToNodeStream: renderToNodeStream,
+  renderToStaticNodeStream: renderToStaticNodeStream,
+  version: ReactVersion
+};
+
+// TODO: decide on the top-level export form.
+// This is hacky but makes it work with both Rollup and Jest
+
+
+var server_node = ReactDOMServer.default || ReactDOMServer;
+
+module.exports = server_node;
+  })();
+}
diff --git a/igv_component/node_modules/react-dom/cjs/react-dom-server.node.production.min.js b/igv_component/node_modules/react-dom/cjs/react-dom-server.node.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..6f0e871d04035d50dd45fdf70b2190e0548323cb
--- /dev/null
+++ b/igv_component/node_modules/react-dom/cjs/react-dom-server.node.production.min.js
@@ -0,0 +1,55 @@
+/** @license React v16.14.0
+ * react-dom-server.node.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';var k=require("object-assign"),m=require("react"),aa=require("stream");function r(a){for(var b="https://reactjs.org/docs/error-decoder.html?invariant="+a,c=1;c<arguments.length;c++)b+="&args[]="+encodeURIComponent(arguments[c]);return"Minified React error #"+a+"; visit "+b+" for the full message or use the non-minified dev environment for full errors and additional helpful warnings."}
+var u="function"===typeof Symbol&&Symbol.for,ba=u?Symbol.for("react.portal"):60106,v=u?Symbol.for("react.fragment"):60107,ca=u?Symbol.for("react.strict_mode"):60108,da=u?Symbol.for("react.profiler"):60114,w=u?Symbol.for("react.provider"):60109,ea=u?Symbol.for("react.context"):60110,fa=u?Symbol.for("react.concurrent_mode"):60111,ha=u?Symbol.for("react.forward_ref"):60112,B=u?Symbol.for("react.suspense"):60113,ia=u?Symbol.for("react.suspense_list"):60120,ja=u?Symbol.for("react.memo"):60115,ka=u?Symbol.for("react.lazy"):
+60116,la=u?Symbol.for("react.block"):60121,ma=u?Symbol.for("react.fundamental"):60117,na=u?Symbol.for("react.scope"):60119;function oa(a){if(-1===a._status){a._status=0;var b=a._ctor;b=b();a._result=b;b.then(function(c){0===a._status&&(c=c.default,a._status=1,a._result=c)},function(c){0===a._status&&(a._status=2,a._result=c)})}}
+function C(a){if(null==a)return null;if("function"===typeof a)return a.displayName||a.name||null;if("string"===typeof a)return a;switch(a){case v:return"Fragment";case ba:return"Portal";case da:return"Profiler";case ca:return"StrictMode";case B:return"Suspense";case ia:return"SuspenseList"}if("object"===typeof a)switch(a.$$typeof){case ea:return"Context.Consumer";case w:return"Context.Provider";case ha:var b=a.render;b=b.displayName||b.name||"";return a.displayName||(""!==b?"ForwardRef("+b+")":"ForwardRef");
+case ja:return C(a.type);case la:return C(a.render);case ka:if(a=1===a._status?a._result:null)return C(a)}return null}var D=m.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;D.hasOwnProperty("ReactCurrentDispatcher")||(D.ReactCurrentDispatcher={current:null});D.hasOwnProperty("ReactCurrentBatchConfig")||(D.ReactCurrentBatchConfig={suspense:null});var pa={};function E(a,b){for(var c=a._threadCount|0;c<=b;c++)a[c]=a._currentValue2,a._threadCount=c+1}
+function qa(a,b,c,d){if(d&&(d=a.contextType,"object"===typeof d&&null!==d))return E(d,c),d[c];if(a=a.contextTypes){c={};for(var f in a)c[f]=b[f];b=c}else b=pa;return b}for(var F=new Uint16Array(16),H=0;15>H;H++)F[H]=H+1;F[15]=0;
+var ra=/^[:A-Z_a-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD][:A-Z_a-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD\-.0-9\u00B7\u0300-\u036F\u203F-\u2040]*$/,sa=Object.prototype.hasOwnProperty,ta={},ua={};
+function va(a){if(sa.call(ua,a))return!0;if(sa.call(ta,a))return!1;if(ra.test(a))return ua[a]=!0;ta[a]=!0;return!1}function wa(a,b,c,d){if(null!==c&&0===c.type)return!1;switch(typeof b){case "function":case "symbol":return!0;case "boolean":if(d)return!1;if(null!==c)return!c.acceptsBooleans;a=a.toLowerCase().slice(0,5);return"data-"!==a&&"aria-"!==a;default:return!1}}
+function xa(a,b,c,d){if(null===b||"undefined"===typeof b||wa(a,b,c,d))return!0;if(d)return!1;if(null!==c)switch(c.type){case 3:return!b;case 4:return!1===b;case 5:return isNaN(b);case 6:return isNaN(b)||1>b}return!1}function J(a,b,c,d,f,h){this.acceptsBooleans=2===b||3===b||4===b;this.attributeName=d;this.attributeNamespace=f;this.mustUseProperty=c;this.propertyName=a;this.type=b;this.sanitizeURL=h}var K={};
+"children dangerouslySetInnerHTML defaultValue defaultChecked innerHTML suppressContentEditableWarning suppressHydrationWarning style".split(" ").forEach(function(a){K[a]=new J(a,0,!1,a,null,!1)});[["acceptCharset","accept-charset"],["className","class"],["htmlFor","for"],["httpEquiv","http-equiv"]].forEach(function(a){var b=a[0];K[b]=new J(b,1,!1,a[1],null,!1)});["contentEditable","draggable","spellCheck","value"].forEach(function(a){K[a]=new J(a,2,!1,a.toLowerCase(),null,!1)});
+["autoReverse","externalResourcesRequired","focusable","preserveAlpha"].forEach(function(a){K[a]=new J(a,2,!1,a,null,!1)});"allowFullScreen async autoFocus autoPlay controls default defer disabled disablePictureInPicture formNoValidate hidden loop noModule noValidate open playsInline readOnly required reversed scoped seamless itemScope".split(" ").forEach(function(a){K[a]=new J(a,3,!1,a.toLowerCase(),null,!1)});
+["checked","multiple","muted","selected"].forEach(function(a){K[a]=new J(a,3,!0,a,null,!1)});["capture","download"].forEach(function(a){K[a]=new J(a,4,!1,a,null,!1)});["cols","rows","size","span"].forEach(function(a){K[a]=new J(a,6,!1,a,null,!1)});["rowSpan","start"].forEach(function(a){K[a]=new J(a,5,!1,a.toLowerCase(),null,!1)});var L=/[\-:]([a-z])/g;function M(a){return a[1].toUpperCase()}
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+K.xlinkHref=new J("xlinkHref",1,!1,"xlink:href","http://www.w3.org/1999/xlink",!0);["src","href","action","formAction"].forEach(function(a){K[a]=new J(a,1,!1,a.toLowerCase(),null,!0)});var ya=/["'&<>]/;
+function N(a){if("boolean"===typeof a||"number"===typeof a)return""+a;a=""+a;var b=ya.exec(a);if(b){var c="",d,f=0;for(d=b.index;d<a.length;d++){switch(a.charCodeAt(d)){case 34:b="&quot;";break;case 38:b="&amp;";break;case 39:b="&#x27;";break;case 60:b="&lt;";break;case 62:b="&gt;";break;default:continue}f!==d&&(c+=a.substring(f,d));f=d+1;c+=b}a=f!==d?c+a.substring(f,d):c}return a}
+function za(a,b){var c=K.hasOwnProperty(a)?K[a]:null;var d;if(d="style"!==a)d=null!==c?0===c.type:!(2<a.length)||"o"!==a[0]&&"O"!==a[0]||"n"!==a[1]&&"N"!==a[1]?!1:!0;if(d||xa(a,b,c,!1))return"";if(null!==c){a=c.attributeName;d=c.type;if(3===d||4===d&&!0===b)return a+'=""';c.sanitizeURL&&(b=""+b);return a+'="'+(N(b)+'"')}return va(a)?a+'="'+(N(b)+'"'):""}function Aa(a,b){return a===b&&(0!==a||1/a===1/b)||a!==a&&b!==b}
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+function La(a){switch(a){case "svg":return"http://www.w3.org/2000/svg";case "math":return"http://www.w3.org/1998/Math/MathML";default:return"http://www.w3.org/1999/xhtml"}}
+var Ma={area:!0,base:!0,br:!0,col:!0,embed:!0,hr:!0,img:!0,input:!0,keygen:!0,link:!0,meta:!0,param:!0,source:!0,track:!0,wbr:!0},Na=k({menuitem:!0},Ma),Y={animationIterationCount:!0,borderImageOutset:!0,borderImageSlice:!0,borderImageWidth:!0,boxFlex:!0,boxFlexGroup:!0,boxOrdinalGroup:!0,columnCount:!0,columns:!0,flex:!0,flexGrow:!0,flexPositive:!0,flexShrink:!0,flexNegative:!0,flexOrder:!0,gridArea:!0,gridRow:!0,gridRowEnd:!0,gridRowSpan:!0,gridRowStart:!0,gridColumn:!0,gridColumnEnd:!0,gridColumnSpan:!0,
+gridColumnStart:!0,fontWeight:!0,lineClamp:!0,lineHeight:!0,opacity:!0,order:!0,orphans:!0,tabSize:!0,widows:!0,zIndex:!0,zoom:!0,fillOpacity:!0,floodOpacity:!0,stopOpacity:!0,strokeDasharray:!0,strokeDashoffset:!0,strokeMiterlimit:!0,strokeOpacity:!0,strokeWidth:!0},Oa=["Webkit","ms","Moz","O"];Object.keys(Y).forEach(function(a){Oa.forEach(function(b){b=b+a.charAt(0).toUpperCase()+a.substring(1);Y[b]=Y[a]})});
+var Pa=/([A-Z])/g,Qa=/^ms-/,Z=m.Children.toArray,Ra=D.ReactCurrentDispatcher,Sa={listing:!0,pre:!0,textarea:!0},Ta=/^[a-zA-Z][a-zA-Z:_\.\-\d]*$/,Ua={},Va={};function Wa(a){if(void 0===a||null===a)return a;var b="";m.Children.forEach(a,function(a){null!=a&&(b+=a)});return b}var Xa=Object.prototype.hasOwnProperty,Ya={children:null,dangerouslySetInnerHTML:null,suppressContentEditableWarning:null,suppressHydrationWarning:null};function Za(a,b){if(void 0===a)throw Error(r(152,C(b)||"Component"));}
+function $a(a,b,c){function d(d,h){var e=h.prototype&&h.prototype.isReactComponent,f=qa(h,b,c,e),p=[],g=!1,l={isMounted:function(){return!1},enqueueForceUpdate:function(){if(null===p)return null},enqueueReplaceState:function(a,c){g=!0;p=[c]},enqueueSetState:function(a,c){if(null===p)return null;p.push(c)}};if(e){if(e=new h(d.props,f,l),"function"===typeof h.getDerivedStateFromProps){var x=h.getDerivedStateFromProps.call(null,d.props,e.state);null!=x&&(e.state=k({},e.state,x))}}else if(O={},e=h(d.props,
+f,l),e=Ea(h,d.props,e,f),null==e||null==e.render){a=e;Za(a,h);return}e.props=d.props;e.context=f;e.updater=l;l=e.state;void 0===l&&(e.state=l=null);if("function"===typeof e.UNSAFE_componentWillMount||"function"===typeof e.componentWillMount)if("function"===typeof e.componentWillMount&&"function"!==typeof h.getDerivedStateFromProps&&e.componentWillMount(),"function"===typeof e.UNSAFE_componentWillMount&&"function"!==typeof h.getDerivedStateFromProps&&e.UNSAFE_componentWillMount(),p.length){l=p;var t=
+g;p=null;g=!1;if(t&&1===l.length)e.state=l[0];else{x=t?l[0]:e.state;var y=!0;for(t=t?1:0;t<l.length;t++){var q=l[t];q="function"===typeof q?q.call(e,x,d.props,f):q;null!=q&&(y?(y=!1,x=k({},x,q)):k(x,q))}e.state=x}}else p=null;a=e.render();Za(a,h);if("function"===typeof e.getChildContext&&(d=h.childContextTypes,"object"===typeof d)){var A=e.getChildContext();for(var T in A)if(!(T in d))throw Error(r(108,C(h)||"Unknown",T));}A&&(b=k({},b,A))}for(;m.isValidElement(a);){var f=a,h=f.type;if("function"!==
+typeof h)break;d(f,h)}return{child:a,context:b}}
+var ab=function(){function a(a,b){m.isValidElement(a)?a.type!==v?a=[a]:(a=a.props.children,a=m.isValidElement(a)?[a]:Z(a)):a=Z(a);a={type:null,domNamespace:Ka.html,children:a,childIndex:0,context:pa,footer:""};var c=F[0];if(0===c){var d=F;c=d.length;var p=2*c;if(!(65536>=p))throw Error(r(304));var g=new Uint16Array(p);g.set(d);F=g;F[0]=c+1;for(d=c;d<p-1;d++)F[d]=d+1;F[p-1]=0}else F[0]=F[c];this.threadID=c;this.stack=[a];this.exhausted=!1;this.currentSelectValue=null;this.previousWasTextNode=!1;this.makeStaticMarkup=
+b;this.suspenseDepth=0;this.contextIndex=-1;this.contextStack=[];this.contextValueStack=[]}var b=a.prototype;b.destroy=function(){if(!this.exhausted){this.exhausted=!0;this.clearProviders();var a=this.threadID;F[a]=F[0];F[0]=a}};b.pushProvider=function(a){var b=++this.contextIndex,c=a.type._context,h=this.threadID;E(c,h);var p=c[h];this.contextStack[b]=c;this.contextValueStack[b]=p;c[h]=a.props.value};b.popProvider=function(){var a=this.contextIndex,b=this.contextStack[a],f=this.contextValueStack[a];
+this.contextStack[a]=null;this.contextValueStack[a]=null;this.contextIndex--;b[this.threadID]=f};b.clearProviders=function(){for(var a=this.contextIndex;0<=a;a--)this.contextStack[a][this.threadID]=this.contextValueStack[a]};b.read=function(a){if(this.exhausted)return null;var b=X;X=this.threadID;var c=Ra.current;Ra.current=Ja;try{for(var h=[""],p=!1;h[0].length<a;){if(0===this.stack.length){this.exhausted=!0;var g=this.threadID;F[g]=F[0];F[0]=g;break}var e=this.stack[this.stack.length-1];if(p||e.childIndex>=
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+x="";try{x+=this.render(l,e.context,e.domNamespace)}catch(t){if(null!=t&&"function"===typeof t.then)throw Error(r(294));throw t;}finally{}h.length<=this.suspenseDepth&&h.push("");h[this.suspenseDepth]+=x}}return h[0]}finally{Ra.current=c,X=b}};b.render=function(a,b,f){if("string"===typeof a||"number"===typeof a){f=""+a;if(""===f)return"";if(this.makeStaticMarkup)return N(f);if(this.previousWasTextNode)return"\x3c!-- --\x3e"+N(f);this.previousWasTextNode=!0;return N(f)}b=$a(a,b,this.threadID);a=b.child;
+b=b.context;if(null===a||!1===a)return"";if(!m.isValidElement(a)){if(null!=a&&null!=a.$$typeof){f=a.$$typeof;if(f===ba)throw Error(r(257));throw Error(r(258,f.toString()));}a=Z(a);this.stack.push({type:null,domNamespace:f,children:a,childIndex:0,context:b,footer:""});return""}var c=a.type;if("string"===typeof c)return this.renderDOM(a,b,f);switch(c){case ca:case fa:case da:case ia:case v:return a=Z(a.props.children),this.stack.push({type:null,domNamespace:f,children:a,childIndex:0,context:b,footer:""}),
+"";case B:throw Error(r(294));}if("object"===typeof c&&null!==c)switch(c.$$typeof){case ha:O={};var d=c.render(a.props,a.ref);d=Ea(c.render,a.props,d,a.ref);d=Z(d);this.stack.push({type:null,domNamespace:f,children:d,childIndex:0,context:b,footer:""});return"";case ja:return a=[m.createElement(c.type,k({ref:a.ref},a.props))],this.stack.push({type:null,domNamespace:f,children:a,childIndex:0,context:b,footer:""}),"";case w:return c=Z(a.props.children),f={type:a,domNamespace:f,children:c,childIndex:0,
+context:b,footer:""},this.pushProvider(a),this.stack.push(f),"";case ea:c=a.type;d=a.props;var g=this.threadID;E(c,g);c=Z(d.children(c[g]));this.stack.push({type:a,domNamespace:f,children:c,childIndex:0,context:b,footer:""});return"";case ma:throw Error(r(338));case ka:switch(c=a.type,oa(c),c._status){case 1:return a=[m.createElement(c._result,k({ref:a.ref},a.props))],this.stack.push({type:null,domNamespace:f,children:a,childIndex:0,context:b,footer:""}),"";case 2:throw c._result;default:throw Error(r(295));
+}case na:throw Error(r(343));}throw Error(r(130,null==c?c:typeof c,""));};b.renderDOM=function(a,b,f){var c=a.type.toLowerCase();f===Ka.html&&La(c);if(!Ua.hasOwnProperty(c)){if(!Ta.test(c))throw Error(r(65,c));Ua[c]=!0}var d=a.props;if("input"===c)d=k({type:void 0},d,{defaultChecked:void 0,defaultValue:void 0,value:null!=d.value?d.value:d.defaultValue,checked:null!=d.checked?d.checked:d.defaultChecked});else if("textarea"===c){var g=d.value;if(null==g){g=d.defaultValue;var e=d.children;if(null!=e){if(null!=
+g)throw Error(r(92));if(Array.isArray(e)){if(!(1>=e.length))throw Error(r(93));e=e[0]}g=""+e}null==g&&(g="")}d=k({},d,{value:void 0,children:""+g})}else if("select"===c)this.currentSelectValue=null!=d.value?d.value:d.defaultValue,d=k({},d,{value:void 0});else if("option"===c){e=this.currentSelectValue;var I=Wa(d.children);if(null!=e){var G=null!=d.value?d.value+"":I;g=!1;if(Array.isArray(e))for(var n=0;n<e.length;n++){if(""+e[n]===G){g=!0;break}}else g=""+e===G;d=k({selected:void 0,children:void 0},
+d,{selected:g,children:I})}}if(g=d){if(Na[c]&&(null!=g.children||null!=g.dangerouslySetInnerHTML))throw Error(r(137,c,""));if(null!=g.dangerouslySetInnerHTML){if(null!=g.children)throw Error(r(60));if(!("object"===typeof g.dangerouslySetInnerHTML&&"__html"in g.dangerouslySetInnerHTML))throw Error(r(61));}if(null!=g.style&&"object"!==typeof g.style)throw Error(r(62,""));}g=d;e=this.makeStaticMarkup;I=1===this.stack.length;G="<"+a.type;for(z in g)if(Xa.call(g,z)){var l=g[z];if(null!=l){if("style"===
+z){n=void 0;var x="",t="";for(n in l)if(l.hasOwnProperty(n)){var y=0===n.indexOf("--"),q=l[n];if(null!=q){if(y)var A=n;else if(A=n,Va.hasOwnProperty(A))A=Va[A];else{var T=A.replace(Pa,"-$1").toLowerCase().replace(Qa,"-ms-");A=Va[A]=T}x+=t+A+":";t=n;y=null==q||"boolean"===typeof q||""===q?"":y||"number"!==typeof q||0===q||Y.hasOwnProperty(t)&&Y[t]?(""+q).trim():q+"px";x+=y;t=";"}}l=x||null}n=null;b:if(y=c,q=g,-1===y.indexOf("-"))y="string"===typeof q.is;else switch(y){case "annotation-xml":case "color-profile":case "font-face":case "font-face-src":case "font-face-uri":case "font-face-format":case "font-face-name":case "missing-glyph":y=
+!1;break b;default:y=!0}y?Ya.hasOwnProperty(z)||(n=z,n=va(n)&&null!=l?n+'="'+(N(l)+'"'):""):n=za(z,l);n&&(G+=" "+n)}}e||I&&(G+=' data-reactroot=""');var z=G;g="";Ma.hasOwnProperty(c)?z+="/>":(z+=">",g="</"+a.type+">");a:{e=d.dangerouslySetInnerHTML;if(null!=e){if(null!=e.__html){e=e.__html;break a}}else if(e=d.children,"string"===typeof e||"number"===typeof e){e=N(e);break a}e=null}null!=e?(d=[],Sa.hasOwnProperty(c)&&"\n"===e.charAt(0)&&(z+="\n"),z+=e):d=Z(d.children);a=a.type;f=null==f||"http://www.w3.org/1999/xhtml"===
+f?La(a):"http://www.w3.org/2000/svg"===f&&"foreignObject"===a?"http://www.w3.org/1999/xhtml":f;this.stack.push({domNamespace:f,type:c,children:d,childIndex:0,context:b,footer:g});this.previousWasTextNode=!1;return z};return a}();function bb(a,b){a.prototype=Object.create(b.prototype);a.prototype.constructor=a;a.__proto__=b}
+var cb=function(a){function b(b,c){var d=a.call(this,{})||this;d.partialRenderer=new ab(b,c);return d}bb(b,a);var c=b.prototype;c._destroy=function(a,b){this.partialRenderer.destroy();b(a)};c._read=function(a){try{this.push(this.partialRenderer.read(a))}catch(f){this.destroy(f)}};return b}(aa.Readable),db={renderToString:function(a){a=new ab(a,!1);try{return a.read(Infinity)}finally{a.destroy()}},renderToStaticMarkup:function(a){a=new ab(a,!0);try{return a.read(Infinity)}finally{a.destroy()}},renderToNodeStream:function(a){return new cb(a,
+!1)},renderToStaticNodeStream:function(a){return new cb(a,!0)},version:"16.14.0"};module.exports=db.default||db;
diff --git a/igv_component/node_modules/react-dom/cjs/react-dom-test-utils.development.js b/igv_component/node_modules/react-dom/cjs/react-dom-test-utils.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..64529508c15da0412bee02a2375420768fa652a2
--- /dev/null
+++ b/igv_component/node_modules/react-dom/cjs/react-dom-test-utils.development.js
@@ -0,0 +1,1480 @@
+/** @license React v16.14.0
+ * react-dom-test-utils.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+var _assign = require('object-assign');
+var React = require('react');
+var ReactDOM = require('react-dom');
+var Scheduler = require('scheduler');
+
+var ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED; // Prevent newer renderers from RTE when used with older react package versions.
+// Current owner and dispatcher used to share the same ref,
+// but PR #14548 split them out to better support the react-debug-tools package.
+
+if (!ReactSharedInternals.hasOwnProperty('ReactCurrentDispatcher')) {
+  ReactSharedInternals.ReactCurrentDispatcher = {
+    current: null
+  };
+}
+
+if (!ReactSharedInternals.hasOwnProperty('ReactCurrentBatchConfig')) {
+  ReactSharedInternals.ReactCurrentBatchConfig = {
+    suspense: null
+  };
+}
+
+// by calls to these methods by a Babel plugin.
+//
+// In PROD (or in packages without access to React internals),
+// they are left as they are instead.
+
+function warn(format) {
+  {
+    for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+      args[_key - 1] = arguments[_key];
+    }
+
+    printWarning('warn', format, args);
+  }
+}
+function error(format) {
+  {
+    for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+      args[_key2 - 1] = arguments[_key2];
+    }
+
+    printWarning('error', format, args);
+  }
+}
+
+function printWarning(level, format, args) {
+  // When changing this logic, you might want to also
+  // update consoleWithStackDev.www.js as well.
+  {
+    var hasExistingStack = args.length > 0 && typeof args[args.length - 1] === 'string' && args[args.length - 1].indexOf('\n    in') === 0;
+
+    if (!hasExistingStack) {
+      var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+      var stack = ReactDebugCurrentFrame.getStackAddendum();
+
+      if (stack !== '') {
+        format += '%s';
+        args = args.concat([stack]);
+      }
+    }
+
+    var argsWithFormat = args.map(function (item) {
+      return '' + item;
+    }); // Careful: RN currently depends on this prefix
+
+    argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it
+    // breaks IE9: https://github.com/facebook/react/issues/13610
+    // eslint-disable-next-line react-internal/no-production-logging
+
+    Function.prototype.apply.call(console[level], console, argsWithFormat);
+
+    try {
+      // --- Welcome to debugging React ---
+      // This error was thrown as a convenience so that you can use this stack
+      // to find the callsite that caused this warning to fire.
+      var argIndex = 0;
+      var message = 'Warning: ' + format.replace(/%s/g, function () {
+        return args[argIndex++];
+      });
+      throw new Error(message);
+    } catch (x) {}
+  }
+}
+
+/**
+ * `ReactInstanceMap` maintains a mapping from a public facing stateful
+ * instance (key) and the internal representation (value). This allows public
+ * methods to accept the user facing instance as an argument and map them back
+ * to internal methods.
+ *
+ * Note that this module is currently shared and assumed to be stateless.
+ * If this becomes an actual Map, that will break.
+ */
+function get(key) {
+  return key._reactInternalFiber;
+}
+
+var FunctionComponent = 0;
+var ClassComponent = 1;
+
+var HostRoot = 3; // Root of a host tree. Could be nested inside another node.
+
+var HostComponent = 5;
+var HostText = 6;
+
+// Don't change these two values. They're used by React Dev Tools.
+var NoEffect =
+/*              */
+0;
+
+var Placement =
+/*             */
+2;
+var Hydrating =
+/*             */
+1024;
+
+var ReactCurrentOwner = ReactSharedInternals.ReactCurrentOwner;
+function getNearestMountedFiber(fiber) {
+  var node = fiber;
+  var nearestMounted = fiber;
+
+  if (!fiber.alternate) {
+    // If there is no alternate, this might be a new tree that isn't inserted
+    // yet. If it is, then it will have a pending insertion effect on it.
+    var nextNode = node;
+
+    do {
+      node = nextNode;
+
+      if ((node.effectTag & (Placement | Hydrating)) !== NoEffect) {
+        // This is an insertion or in-progress hydration. The nearest possible
+        // mounted fiber is the parent but we need to continue to figure out
+        // if that one is still mounted.
+        nearestMounted = node.return;
+      }
+
+      nextNode = node.return;
+    } while (nextNode);
+  } else {
+    while (node.return) {
+      node = node.return;
+    }
+  }
+
+  if (node.tag === HostRoot) {
+    // TODO: Check if this was a nested HostRoot when used with
+    // renderContainerIntoSubtree.
+    return nearestMounted;
+  } // If we didn't hit the root, that means that we're in an disconnected tree
+  // that has been unmounted.
+
+
+  return null;
+}
+
+function assertIsMounted(fiber) {
+  if (!(getNearestMountedFiber(fiber) === fiber)) {
+    {
+      throw Error( "Unable to find node on an unmounted component." );
+    }
+  }
+}
+
+function findCurrentFiberUsingSlowPath(fiber) {
+  var alternate = fiber.alternate;
+
+  if (!alternate) {
+    // If there is no alternate, then we only need to check if it is mounted.
+    var nearestMounted = getNearestMountedFiber(fiber);
+
+    if (!(nearestMounted !== null)) {
+      {
+        throw Error( "Unable to find node on an unmounted component." );
+      }
+    }
+
+    if (nearestMounted !== fiber) {
+      return null;
+    }
+
+    return fiber;
+  } // If we have two possible branches, we'll walk backwards up to the root
+  // to see what path the root points to. On the way we may hit one of the
+  // special cases and we'll deal with them.
+
+
+  var a = fiber;
+  var b = alternate;
+
+  while (true) {
+    var parentA = a.return;
+
+    if (parentA === null) {
+      // We're at the root.
+      break;
+    }
+
+    var parentB = parentA.alternate;
+
+    if (parentB === null) {
+      // There is no alternate. This is an unusual case. Currently, it only
+      // happens when a Suspense component is hidden. An extra fragment fiber
+      // is inserted in between the Suspense fiber and its children. Skip
+      // over this extra fragment fiber and proceed to the next parent.
+      var nextParent = parentA.return;
+
+      if (nextParent !== null) {
+        a = b = nextParent;
+        continue;
+      } // If there's no parent, we're at the root.
+
+
+      break;
+    } // If both copies of the parent fiber point to the same child, we can
+    // assume that the child is current. This happens when we bailout on low
+    // priority: the bailed out fiber's child reuses the current child.
+
+
+    if (parentA.child === parentB.child) {
+      var child = parentA.child;
+
+      while (child) {
+        if (child === a) {
+          // We've determined that A is the current branch.
+          assertIsMounted(parentA);
+          return fiber;
+        }
+
+        if (child === b) {
+          // We've determined that B is the current branch.
+          assertIsMounted(parentA);
+          return alternate;
+        }
+
+        child = child.sibling;
+      } // We should never have an alternate for any mounting node. So the only
+      // way this could possibly happen is if this was unmounted, if at all.
+
+
+      {
+        {
+          throw Error( "Unable to find node on an unmounted component." );
+        }
+      }
+    }
+
+    if (a.return !== b.return) {
+      // The return pointer of A and the return pointer of B point to different
+      // fibers. We assume that return pointers never criss-cross, so A must
+      // belong to the child set of A.return, and B must belong to the child
+      // set of B.return.
+      a = parentA;
+      b = parentB;
+    } else {
+      // The return pointers point to the same fiber. We'll have to use the
+      // default, slow path: scan the child sets of each parent alternate to see
+      // which child belongs to which set.
+      //
+      // Search parent A's child set
+      var didFindChild = false;
+      var _child = parentA.child;
+
+      while (_child) {
+        if (_child === a) {
+          didFindChild = true;
+          a = parentA;
+          b = parentB;
+          break;
+        }
+
+        if (_child === b) {
+          didFindChild = true;
+          b = parentA;
+          a = parentB;
+          break;
+        }
+
+        _child = _child.sibling;
+      }
+
+      if (!didFindChild) {
+        // Search parent B's child set
+        _child = parentB.child;
+
+        while (_child) {
+          if (_child === a) {
+            didFindChild = true;
+            a = parentB;
+            b = parentA;
+            break;
+          }
+
+          if (_child === b) {
+            didFindChild = true;
+            b = parentB;
+            a = parentA;
+            break;
+          }
+
+          _child = _child.sibling;
+        }
+
+        if (!didFindChild) {
+          {
+            throw Error( "Child was not found in either parent set. This indicates a bug in React related to the return pointer. Please file an issue." );
+          }
+        }
+      }
+    }
+
+    if (!(a.alternate === b)) {
+      {
+        throw Error( "Return fibers should always be each others' alternates. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+  } // If the root is not a host container, we're in a disconnected tree. I.e.
+  // unmounted.
+
+
+  if (!(a.tag === HostRoot)) {
+    {
+      throw Error( "Unable to find node on an unmounted component." );
+    }
+  }
+
+  if (a.stateNode.current === a) {
+    // We've determined that A is the current branch.
+    return fiber;
+  } // Otherwise B has to be current branch.
+
+
+  return alternate;
+}
+
+var EVENT_POOL_SIZE = 10;
+/**
+ * @interface Event
+ * @see http://www.w3.org/TR/DOM-Level-3-Events/
+ */
+
+var EventInterface = {
+  type: null,
+  target: null,
+  // currentTarget is set when dispatching; no use in copying it here
+  currentTarget: function () {
+    return null;
+  },
+  eventPhase: null,
+  bubbles: null,
+  cancelable: null,
+  timeStamp: function (event) {
+    return event.timeStamp || Date.now();
+  },
+  defaultPrevented: null,
+  isTrusted: null
+};
+
+function functionThatReturnsTrue() {
+  return true;
+}
+
+function functionThatReturnsFalse() {
+  return false;
+}
+/**
+ * Synthetic events are dispatched by event plugins, typically in response to a
+ * top-level event delegation handler.
+ *
+ * These systems should generally use pooling to reduce the frequency of garbage
+ * collection. The system should check `isPersistent` to determine whether the
+ * event should be released into the pool after being dispatched. Users that
+ * need a persisted event should invoke `persist`.
+ *
+ * Synthetic events (and subclasses) implement the DOM Level 3 Events API by
+ * normalizing browser quirks. Subclasses do not necessarily have to implement a
+ * DOM interface; custom application-specific events can also subclass this.
+ *
+ * @param {object} dispatchConfig Configuration used to dispatch this event.
+ * @param {*} targetInst Marker identifying the event target.
+ * @param {object} nativeEvent Native browser event.
+ * @param {DOMEventTarget} nativeEventTarget Target node.
+ */
+
+
+function SyntheticEvent(dispatchConfig, targetInst, nativeEvent, nativeEventTarget) {
+  {
+    // these have a getter/setter for warnings
+    delete this.nativeEvent;
+    delete this.preventDefault;
+    delete this.stopPropagation;
+    delete this.isDefaultPrevented;
+    delete this.isPropagationStopped;
+  }
+
+  this.dispatchConfig = dispatchConfig;
+  this._targetInst = targetInst;
+  this.nativeEvent = nativeEvent;
+  var Interface = this.constructor.Interface;
+
+  for (var propName in Interface) {
+    if (!Interface.hasOwnProperty(propName)) {
+      continue;
+    }
+
+    {
+      delete this[propName]; // this has a getter/setter for warnings
+    }
+
+    var normalize = Interface[propName];
+
+    if (normalize) {
+      this[propName] = normalize(nativeEvent);
+    } else {
+      if (propName === 'target') {
+        this.target = nativeEventTarget;
+      } else {
+        this[propName] = nativeEvent[propName];
+      }
+    }
+  }
+
+  var defaultPrevented = nativeEvent.defaultPrevented != null ? nativeEvent.defaultPrevented : nativeEvent.returnValue === false;
+
+  if (defaultPrevented) {
+    this.isDefaultPrevented = functionThatReturnsTrue;
+  } else {
+    this.isDefaultPrevented = functionThatReturnsFalse;
+  }
+
+  this.isPropagationStopped = functionThatReturnsFalse;
+  return this;
+}
+
+_assign(SyntheticEvent.prototype, {
+  preventDefault: function () {
+    this.defaultPrevented = true;
+    var event = this.nativeEvent;
+
+    if (!event) {
+      return;
+    }
+
+    if (event.preventDefault) {
+      event.preventDefault();
+    } else if (typeof event.returnValue !== 'unknown') {
+      event.returnValue = false;
+    }
+
+    this.isDefaultPrevented = functionThatReturnsTrue;
+  },
+  stopPropagation: function () {
+    var event = this.nativeEvent;
+
+    if (!event) {
+      return;
+    }
+
+    if (event.stopPropagation) {
+      event.stopPropagation();
+    } else if (typeof event.cancelBubble !== 'unknown') {
+      // The ChangeEventPlugin registers a "propertychange" event for
+      // IE. This event does not support bubbling or cancelling, and
+      // any references to cancelBubble throw "Member not found".  A
+      // typeof check of "unknown" circumvents this issue (and is also
+      // IE specific).
+      event.cancelBubble = true;
+    }
+
+    this.isPropagationStopped = functionThatReturnsTrue;
+  },
+
+  /**
+   * We release all dispatched `SyntheticEvent`s after each event loop, adding
+   * them back into the pool. This allows a way to hold onto a reference that
+   * won't be added back into the pool.
+   */
+  persist: function () {
+    this.isPersistent = functionThatReturnsTrue;
+  },
+
+  /**
+   * Checks if this event should be released back into the pool.
+   *
+   * @return {boolean} True if this should not be released, false otherwise.
+   */
+  isPersistent: functionThatReturnsFalse,
+
+  /**
+   * `PooledClass` looks for `destructor` on each instance it releases.
+   */
+  destructor: function () {
+    var Interface = this.constructor.Interface;
+
+    for (var propName in Interface) {
+      {
+        Object.defineProperty(this, propName, getPooledWarningPropertyDefinition(propName, Interface[propName]));
+      }
+    }
+
+    this.dispatchConfig = null;
+    this._targetInst = null;
+    this.nativeEvent = null;
+    this.isDefaultPrevented = functionThatReturnsFalse;
+    this.isPropagationStopped = functionThatReturnsFalse;
+    this._dispatchListeners = null;
+    this._dispatchInstances = null;
+
+    {
+      Object.defineProperty(this, 'nativeEvent', getPooledWarningPropertyDefinition('nativeEvent', null));
+      Object.defineProperty(this, 'isDefaultPrevented', getPooledWarningPropertyDefinition('isDefaultPrevented', functionThatReturnsFalse));
+      Object.defineProperty(this, 'isPropagationStopped', getPooledWarningPropertyDefinition('isPropagationStopped', functionThatReturnsFalse));
+      Object.defineProperty(this, 'preventDefault', getPooledWarningPropertyDefinition('preventDefault', function () {}));
+      Object.defineProperty(this, 'stopPropagation', getPooledWarningPropertyDefinition('stopPropagation', function () {}));
+    }
+  }
+});
+
+SyntheticEvent.Interface = EventInterface;
+/**
+ * Helper to reduce boilerplate when creating subclasses.
+ */
+
+SyntheticEvent.extend = function (Interface) {
+  var Super = this;
+
+  var E = function () {};
+
+  E.prototype = Super.prototype;
+  var prototype = new E();
+
+  function Class() {
+    return Super.apply(this, arguments);
+  }
+
+  _assign(prototype, Class.prototype);
+
+  Class.prototype = prototype;
+  Class.prototype.constructor = Class;
+  Class.Interface = _assign({}, Super.Interface, Interface);
+  Class.extend = Super.extend;
+  addEventPoolingTo(Class);
+  return Class;
+};
+
+addEventPoolingTo(SyntheticEvent);
+/**
+ * Helper to nullify syntheticEvent instance properties when destructing
+ *
+ * @param {String} propName
+ * @param {?object} getVal
+ * @return {object} defineProperty object
+ */
+
+function getPooledWarningPropertyDefinition(propName, getVal) {
+  var isFunction = typeof getVal === 'function';
+  return {
+    configurable: true,
+    set: set,
+    get: get
+  };
+
+  function set(val) {
+    var action = isFunction ? 'setting the method' : 'setting the property';
+    warn(action, 'This is effectively a no-op');
+    return val;
+  }
+
+  function get() {
+    var action = isFunction ? 'accessing the method' : 'accessing the property';
+    var result = isFunction ? 'This is a no-op function' : 'This is set to null';
+    warn(action, result);
+    return getVal;
+  }
+
+  function warn(action, result) {
+    {
+      error("This synthetic event is reused for performance reasons. If you're seeing this, " + "you're %s `%s` on a released/nullified synthetic event. %s. " + 'If you must keep the original synthetic event around, use event.persist(). ' + 'See https://fb.me/react-event-pooling for more information.', action, propName, result);
+    }
+  }
+}
+
+function getPooledEvent(dispatchConfig, targetInst, nativeEvent, nativeInst) {
+  var EventConstructor = this;
+
+  if (EventConstructor.eventPool.length) {
+    var instance = EventConstructor.eventPool.pop();
+    EventConstructor.call(instance, dispatchConfig, targetInst, nativeEvent, nativeInst);
+    return instance;
+  }
+
+  return new EventConstructor(dispatchConfig, targetInst, nativeEvent, nativeInst);
+}
+
+function releasePooledEvent(event) {
+  var EventConstructor = this;
+
+  if (!(event instanceof EventConstructor)) {
+    {
+      throw Error( "Trying to release an event instance into a pool of a different type." );
+    }
+  }
+
+  event.destructor();
+
+  if (EventConstructor.eventPool.length < EVENT_POOL_SIZE) {
+    EventConstructor.eventPool.push(event);
+  }
+}
+
+function addEventPoolingTo(EventConstructor) {
+  EventConstructor.eventPool = [];
+  EventConstructor.getPooled = getPooledEvent;
+  EventConstructor.release = releasePooledEvent;
+}
+
+/**
+ * HTML nodeType values that represent the type of the node
+ */
+var ELEMENT_NODE = 1;
+
+// Do not use the below two methods directly!
+// Instead use constants exported from DOMTopLevelEventTypes in ReactDOM.
+// (It is the only module that is allowed to access these methods.)
+function unsafeCastStringToDOMTopLevelType(topLevelType) {
+  return topLevelType;
+}
+
+var canUseDOM = !!(typeof window !== 'undefined' && typeof window.document !== 'undefined' && typeof window.document.createElement !== 'undefined');
+
+/**
+ * Generate a mapping of standard vendor prefixes using the defined style property and event name.
+ *
+ * @param {string} styleProp
+ * @param {string} eventName
+ * @returns {object}
+ */
+
+function makePrefixMap(styleProp, eventName) {
+  var prefixes = {};
+  prefixes[styleProp.toLowerCase()] = eventName.toLowerCase();
+  prefixes['Webkit' + styleProp] = 'webkit' + eventName;
+  prefixes['Moz' + styleProp] = 'moz' + eventName;
+  return prefixes;
+}
+/**
+ * A list of event names to a configurable list of vendor prefixes.
+ */
+
+
+var vendorPrefixes = {
+  animationend: makePrefixMap('Animation', 'AnimationEnd'),
+  animationiteration: makePrefixMap('Animation', 'AnimationIteration'),
+  animationstart: makePrefixMap('Animation', 'AnimationStart'),
+  transitionend: makePrefixMap('Transition', 'TransitionEnd')
+};
+/**
+ * Event names that have already been detected and prefixed (if applicable).
+ */
+
+var prefixedEventNames = {};
+/**
+ * Element to check for prefixes on.
+ */
+
+var style = {};
+/**
+ * Bootstrap if a DOM exists.
+ */
+
+if (canUseDOM) {
+  style = document.createElement('div').style; // On some platforms, in particular some releases of Android 4.x,
+  // the un-prefixed "animation" and "transition" properties are defined on the
+  // style object but the events that fire will still be prefixed, so we need
+  // to check if the un-prefixed events are usable, and if not remove them from the map.
+
+  if (!('AnimationEvent' in window)) {
+    delete vendorPrefixes.animationend.animation;
+    delete vendorPrefixes.animationiteration.animation;
+    delete vendorPrefixes.animationstart.animation;
+  } // Same as above
+
+
+  if (!('TransitionEvent' in window)) {
+    delete vendorPrefixes.transitionend.transition;
+  }
+}
+/**
+ * Attempts to determine the correct vendor prefixed event name.
+ *
+ * @param {string} eventName
+ * @returns {string}
+ */
+
+
+function getVendorPrefixedEventName(eventName) {
+  if (prefixedEventNames[eventName]) {
+    return prefixedEventNames[eventName];
+  } else if (!vendorPrefixes[eventName]) {
+    return eventName;
+  }
+
+  var prefixMap = vendorPrefixes[eventName];
+
+  for (var styleProp in prefixMap) {
+    if (prefixMap.hasOwnProperty(styleProp) && styleProp in style) {
+      return prefixedEventNames[eventName] = prefixMap[styleProp];
+    }
+  }
+
+  return eventName;
+}
+
+/**
+ * To identify top level events in ReactDOM, we use constants defined by this
+ * module. This is the only module that uses the unsafe* methods to express
+ * that the constants actually correspond to the browser event names. This lets
+ * us save some bundle size by avoiding a top level type -> event name map.
+ * The rest of ReactDOM code should import top level types from this file.
+ */
+
+var TOP_ABORT = unsafeCastStringToDOMTopLevelType('abort');
+var TOP_ANIMATION_END = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationend'));
+var TOP_ANIMATION_ITERATION = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationiteration'));
+var TOP_ANIMATION_START = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationstart'));
+var TOP_BLUR = unsafeCastStringToDOMTopLevelType('blur');
+var TOP_CAN_PLAY = unsafeCastStringToDOMTopLevelType('canplay');
+var TOP_CAN_PLAY_THROUGH = unsafeCastStringToDOMTopLevelType('canplaythrough');
+var TOP_CANCEL = unsafeCastStringToDOMTopLevelType('cancel');
+var TOP_CHANGE = unsafeCastStringToDOMTopLevelType('change');
+var TOP_CLICK = unsafeCastStringToDOMTopLevelType('click');
+var TOP_CLOSE = unsafeCastStringToDOMTopLevelType('close');
+var TOP_COMPOSITION_END = unsafeCastStringToDOMTopLevelType('compositionend');
+var TOP_COMPOSITION_START = unsafeCastStringToDOMTopLevelType('compositionstart');
+var TOP_COMPOSITION_UPDATE = unsafeCastStringToDOMTopLevelType('compositionupdate');
+var TOP_CONTEXT_MENU = unsafeCastStringToDOMTopLevelType('contextmenu');
+var TOP_COPY = unsafeCastStringToDOMTopLevelType('copy');
+var TOP_CUT = unsafeCastStringToDOMTopLevelType('cut');
+var TOP_DOUBLE_CLICK = unsafeCastStringToDOMTopLevelType('dblclick');
+var TOP_DRAG = unsafeCastStringToDOMTopLevelType('drag');
+var TOP_DRAG_END = unsafeCastStringToDOMTopLevelType('dragend');
+var TOP_DRAG_ENTER = unsafeCastStringToDOMTopLevelType('dragenter');
+var TOP_DRAG_EXIT = unsafeCastStringToDOMTopLevelType('dragexit');
+var TOP_DRAG_LEAVE = unsafeCastStringToDOMTopLevelType('dragleave');
+var TOP_DRAG_OVER = unsafeCastStringToDOMTopLevelType('dragover');
+var TOP_DRAG_START = unsafeCastStringToDOMTopLevelType('dragstart');
+var TOP_DROP = unsafeCastStringToDOMTopLevelType('drop');
+var TOP_DURATION_CHANGE = unsafeCastStringToDOMTopLevelType('durationchange');
+var TOP_EMPTIED = unsafeCastStringToDOMTopLevelType('emptied');
+var TOP_ENCRYPTED = unsafeCastStringToDOMTopLevelType('encrypted');
+var TOP_ENDED = unsafeCastStringToDOMTopLevelType('ended');
+var TOP_ERROR = unsafeCastStringToDOMTopLevelType('error');
+var TOP_FOCUS = unsafeCastStringToDOMTopLevelType('focus');
+var TOP_INPUT = unsafeCastStringToDOMTopLevelType('input');
+var TOP_KEY_DOWN = unsafeCastStringToDOMTopLevelType('keydown');
+var TOP_KEY_PRESS = unsafeCastStringToDOMTopLevelType('keypress');
+var TOP_KEY_UP = unsafeCastStringToDOMTopLevelType('keyup');
+var TOP_LOAD = unsafeCastStringToDOMTopLevelType('load');
+var TOP_LOAD_START = unsafeCastStringToDOMTopLevelType('loadstart');
+var TOP_LOADED_DATA = unsafeCastStringToDOMTopLevelType('loadeddata');
+var TOP_LOADED_METADATA = unsafeCastStringToDOMTopLevelType('loadedmetadata');
+var TOP_MOUSE_DOWN = unsafeCastStringToDOMTopLevelType('mousedown');
+var TOP_MOUSE_MOVE = unsafeCastStringToDOMTopLevelType('mousemove');
+var TOP_MOUSE_OUT = unsafeCastStringToDOMTopLevelType('mouseout');
+var TOP_MOUSE_OVER = unsafeCastStringToDOMTopLevelType('mouseover');
+var TOP_MOUSE_UP = unsafeCastStringToDOMTopLevelType('mouseup');
+var TOP_PASTE = unsafeCastStringToDOMTopLevelType('paste');
+var TOP_PAUSE = unsafeCastStringToDOMTopLevelType('pause');
+var TOP_PLAY = unsafeCastStringToDOMTopLevelType('play');
+var TOP_PLAYING = unsafeCastStringToDOMTopLevelType('playing');
+var TOP_PROGRESS = unsafeCastStringToDOMTopLevelType('progress');
+var TOP_RATE_CHANGE = unsafeCastStringToDOMTopLevelType('ratechange');
+var TOP_SCROLL = unsafeCastStringToDOMTopLevelType('scroll');
+var TOP_SEEKED = unsafeCastStringToDOMTopLevelType('seeked');
+var TOP_SEEKING = unsafeCastStringToDOMTopLevelType('seeking');
+var TOP_SELECTION_CHANGE = unsafeCastStringToDOMTopLevelType('selectionchange');
+var TOP_STALLED = unsafeCastStringToDOMTopLevelType('stalled');
+var TOP_SUSPEND = unsafeCastStringToDOMTopLevelType('suspend');
+var TOP_TEXT_INPUT = unsafeCastStringToDOMTopLevelType('textInput');
+var TOP_TIME_UPDATE = unsafeCastStringToDOMTopLevelType('timeupdate');
+var TOP_TOGGLE = unsafeCastStringToDOMTopLevelType('toggle');
+var TOP_TOUCH_CANCEL = unsafeCastStringToDOMTopLevelType('touchcancel');
+var TOP_TOUCH_END = unsafeCastStringToDOMTopLevelType('touchend');
+var TOP_TOUCH_MOVE = unsafeCastStringToDOMTopLevelType('touchmove');
+var TOP_TOUCH_START = unsafeCastStringToDOMTopLevelType('touchstart');
+var TOP_TRANSITION_END = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('transitionend'));
+var TOP_VOLUME_CHANGE = unsafeCastStringToDOMTopLevelType('volumechange');
+var TOP_WAITING = unsafeCastStringToDOMTopLevelType('waiting');
+var TOP_WHEEL = unsafeCastStringToDOMTopLevelType('wheel'); // List of events that need to be individually attached to media elements.
+
+var PLUGIN_EVENT_SYSTEM = 1;
+
+var didWarnAboutMessageChannel = false;
+var enqueueTaskImpl = null;
+function enqueueTask(task) {
+  if (enqueueTaskImpl === null) {
+    try {
+      // read require off the module object to get around the bundlers.
+      // we don't want them to detect a require and bundle a Node polyfill.
+      var requireString = ('require' + Math.random()).slice(0, 7);
+      var nodeRequire = module && module[requireString]; // assuming we're in node, let's try to get node's
+      // version of setImmediate, bypassing fake timers if any.
+
+      enqueueTaskImpl = nodeRequire('timers').setImmediate;
+    } catch (_err) {
+      // we're in a browser
+      // we can't use regular timers because they may still be faked
+      // so we try MessageChannel+postMessage instead
+      enqueueTaskImpl = function (callback) {
+        {
+          if (didWarnAboutMessageChannel === false) {
+            didWarnAboutMessageChannel = true;
+
+            if (typeof MessageChannel === 'undefined') {
+              error('This browser does not have a MessageChannel implementation, ' + 'so enqueuing tasks via await act(async () => ...) will fail. ' + 'Please file an issue at https://github.com/facebook/react/issues ' + 'if you encounter this warning.');
+            }
+          }
+        }
+
+        var channel = new MessageChannel();
+        channel.port1.onmessage = callback;
+        channel.port2.postMessage(undefined);
+      };
+    }
+  }
+
+  return enqueueTaskImpl(task);
+}
+
+// ReactDOM.js, and ReactTestUtils.js:
+
+var _ReactDOM$__SECRET_IN = ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Events,
+
+/* eslint-disable no-unused-vars */
+getInstanceFromNode = _ReactDOM$__SECRET_IN[0],
+    getNodeFromInstance = _ReactDOM$__SECRET_IN[1],
+    getFiberCurrentPropsFromNode = _ReactDOM$__SECRET_IN[2],
+    injectEventPluginsByName = _ReactDOM$__SECRET_IN[3],
+    eventNameDispatchConfigs = _ReactDOM$__SECRET_IN[4],
+    accumulateTwoPhaseDispatches = _ReactDOM$__SECRET_IN[5],
+    accumulateDirectDispatches = _ReactDOM$__SECRET_IN[6],
+    enqueueStateRestore = _ReactDOM$__SECRET_IN[7],
+    restoreStateIfNeeded = _ReactDOM$__SECRET_IN[8],
+    dispatchEvent = _ReactDOM$__SECRET_IN[9],
+    runEventsInBatch = _ReactDOM$__SECRET_IN[10],
+
+/* eslint-enable no-unused-vars */
+flushPassiveEffects = _ReactDOM$__SECRET_IN[11],
+    IsThisRendererActing = _ReactDOM$__SECRET_IN[12];
+var batchedUpdates = ReactDOM.unstable_batchedUpdates;
+var IsSomeRendererActing = ReactSharedInternals.IsSomeRendererActing; // this implementation should be exactly the same in
+// ReactTestUtilsAct.js, ReactTestRendererAct.js, createReactNoop.js
+
+var isSchedulerMocked = typeof Scheduler.unstable_flushAllWithoutAsserting === 'function';
+
+var flushWork = Scheduler.unstable_flushAllWithoutAsserting || function () {
+  var didFlushWork = false;
+
+  while (flushPassiveEffects()) {
+    didFlushWork = true;
+  }
+
+  return didFlushWork;
+};
+
+function flushWorkAndMicroTasks(onDone) {
+  try {
+    flushWork();
+    enqueueTask(function () {
+      if (flushWork()) {
+        flushWorkAndMicroTasks(onDone);
+      } else {
+        onDone();
+      }
+    });
+  } catch (err) {
+    onDone(err);
+  }
+} // we track the 'depth' of the act() calls with this counter,
+// so we can tell if any async act() calls try to run in parallel.
+
+
+var actingUpdatesScopeDepth = 0;
+
+function act(callback) {
+
+  var previousActingUpdatesScopeDepth = actingUpdatesScopeDepth;
+  var previousIsSomeRendererActing;
+  var previousIsThisRendererActing;
+  actingUpdatesScopeDepth++;
+  previousIsSomeRendererActing = IsSomeRendererActing.current;
+  previousIsThisRendererActing = IsThisRendererActing.current;
+  IsSomeRendererActing.current = true;
+  IsThisRendererActing.current = true;
+
+  function onDone() {
+    actingUpdatesScopeDepth--;
+    IsSomeRendererActing.current = previousIsSomeRendererActing;
+    IsThisRendererActing.current = previousIsThisRendererActing;
+
+    {
+      if (actingUpdatesScopeDepth > previousActingUpdatesScopeDepth) {
+        // if it's _less than_ previousActingUpdatesScopeDepth, then we can assume the 'other' one has warned
+        error('You seem to have overlapping act() calls, this is not supported. ' + 'Be sure to await previous act() calls before making a new one. ');
+      }
+    }
+  }
+
+  var result;
+
+  try {
+    result = batchedUpdates(callback);
+  } catch (error) {
+    // on sync errors, we still want to 'cleanup' and decrement actingUpdatesScopeDepth
+    onDone();
+    throw error;
+  }
+
+  if (result !== null && typeof result === 'object' && typeof result.then === 'function') {
+    // setup a boolean that gets set to true only
+    // once this act() call is await-ed
+    var called = false;
+
+    {
+      if (typeof Promise !== 'undefined') {
+        //eslint-disable-next-line no-undef
+        Promise.resolve().then(function () {}).then(function () {
+          if (called === false) {
+            error('You called act(async () => ...) without await. ' + 'This could lead to unexpected testing behaviour, interleaving multiple act ' + 'calls and mixing their scopes. You should - await act(async () => ...);');
+          }
+        });
+      }
+    } // in the async case, the returned thenable runs the callback, flushes
+    // effects and  microtasks in a loop until flushPassiveEffects() === false,
+    // and cleans up
+
+
+    return {
+      then: function (resolve, reject) {
+        called = true;
+        result.then(function () {
+          if (actingUpdatesScopeDepth > 1 || isSchedulerMocked === true && previousIsSomeRendererActing === true) {
+            onDone();
+            resolve();
+            return;
+          } // we're about to exit the act() scope,
+          // now's the time to flush tasks/effects
+
+
+          flushWorkAndMicroTasks(function (err) {
+            onDone();
+
+            if (err) {
+              reject(err);
+            } else {
+              resolve();
+            }
+          });
+        }, function (err) {
+          onDone();
+          reject(err);
+        });
+      }
+    };
+  } else {
+    {
+      if (result !== undefined) {
+        error('The callback passed to act(...) function ' + 'must return undefined, or a Promise. You returned %s', result);
+      }
+    } // flush effects until none remain, and cleanup
+
+
+    try {
+      if (actingUpdatesScopeDepth === 1 && (isSchedulerMocked === false || previousIsSomeRendererActing === false)) {
+        // we're about to exit the act() scope,
+        // now's the time to flush effects
+        flushWork();
+      }
+
+      onDone();
+    } catch (err) {
+      onDone();
+      throw err;
+    } // in the sync case, the returned thenable only warns *if* await-ed
+
+
+    return {
+      then: function (resolve) {
+        {
+          error('Do not await the result of calling act(...) with sync logic, it is not a Promise.');
+        }
+
+        resolve();
+      }
+    };
+  }
+}
+
+var findDOMNode = ReactDOM.findDOMNode; // Keep in sync with ReactDOMUnstableNativeDependencies.js
+// ReactDOM.js, and ReactTestUtilsAct.js:
+
+var _ReactDOM$__SECRET_IN$1 = ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Events,
+    getInstanceFromNode$1 = _ReactDOM$__SECRET_IN$1[0],
+
+/* eslint-disable no-unused-vars */
+getNodeFromInstance$1 = _ReactDOM$__SECRET_IN$1[1],
+    getFiberCurrentPropsFromNode$1 = _ReactDOM$__SECRET_IN$1[2],
+    injectEventPluginsByName$1 = _ReactDOM$__SECRET_IN$1[3],
+
+/* eslint-enable no-unused-vars */
+eventNameDispatchConfigs$1 = _ReactDOM$__SECRET_IN$1[4],
+    accumulateTwoPhaseDispatches$1 = _ReactDOM$__SECRET_IN$1[5],
+    accumulateDirectDispatches$1 = _ReactDOM$__SECRET_IN$1[6],
+    enqueueStateRestore$1 = _ReactDOM$__SECRET_IN$1[7],
+    restoreStateIfNeeded$1 = _ReactDOM$__SECRET_IN$1[8],
+    dispatchEvent$1 = _ReactDOM$__SECRET_IN$1[9],
+    runEventsInBatch$1 = _ReactDOM$__SECRET_IN$1[10],
+
+/* eslint-disable no-unused-vars */
+flushPassiveEffects$1 = _ReactDOM$__SECRET_IN$1[11],
+    IsThisRendererActing$1
+/* eslint-enable no-unused-vars */
+= _ReactDOM$__SECRET_IN$1[12];
+
+function Event(suffix) {}
+
+var hasWarnedAboutDeprecatedMockComponent = false;
+/**
+ * @class ReactTestUtils
+ */
+
+/**
+ * Simulates a top level event being dispatched from a raw event that occurred
+ * on an `Element` node.
+ * @param {number} topLevelType A number from `TopLevelEventTypes`
+ * @param {!Element} node The dom to simulate an event occurring on.
+ * @param {?Event} fakeNativeEvent Fake native event to use in SyntheticEvent.
+ */
+
+function simulateNativeEventOnNode(topLevelType, node, fakeNativeEvent) {
+  fakeNativeEvent.target = node;
+  dispatchEvent$1(topLevelType, PLUGIN_EVENT_SYSTEM, document, fakeNativeEvent);
+}
+/**
+ * Simulates a top level event being dispatched from a raw event that occurred
+ * on the `ReactDOMComponent` `comp`.
+ * @param {Object} topLevelType A type from `BrowserEventConstants.topLevelTypes`.
+ * @param {!ReactDOMComponent} comp
+ * @param {?Event} fakeNativeEvent Fake native event to use in SyntheticEvent.
+ */
+
+
+function simulateNativeEventOnDOMComponent(topLevelType, comp, fakeNativeEvent) {
+  simulateNativeEventOnNode(topLevelType, findDOMNode(comp), fakeNativeEvent);
+}
+
+function findAllInRenderedFiberTreeInternal(fiber, test) {
+  if (!fiber) {
+    return [];
+  }
+
+  var currentParent = findCurrentFiberUsingSlowPath(fiber);
+
+  if (!currentParent) {
+    return [];
+  }
+
+  var node = currentParent;
+  var ret = [];
+
+  while (true) {
+    if (node.tag === HostComponent || node.tag === HostText || node.tag === ClassComponent || node.tag === FunctionComponent) {
+      var publicInst = node.stateNode;
+
+      if (test(publicInst)) {
+        ret.push(publicInst);
+      }
+    }
+
+    if (node.child) {
+      node.child.return = node;
+      node = node.child;
+      continue;
+    }
+
+    if (node === currentParent) {
+      return ret;
+    }
+
+    while (!node.sibling) {
+      if (!node.return || node.return === currentParent) {
+        return ret;
+      }
+
+      node = node.return;
+    }
+
+    node.sibling.return = node.return;
+    node = node.sibling;
+  }
+}
+
+function validateClassInstance(inst, methodName) {
+  if (!inst) {
+    // This is probably too relaxed but it's existing behavior.
+    return;
+  }
+
+  if (get(inst)) {
+    // This is a public instance indeed.
+    return;
+  }
+
+  var received;
+  var stringified = '' + inst;
+
+  if (Array.isArray(inst)) {
+    received = 'an array';
+  } else if (inst && inst.nodeType === ELEMENT_NODE && inst.tagName) {
+    received = 'a DOM node';
+  } else if (stringified === '[object Object]') {
+    received = 'object with keys {' + Object.keys(inst).join(', ') + '}';
+  } else {
+    received = stringified;
+  }
+
+  {
+    {
+      throw Error( methodName + "(...): the first argument must be a React class instance. Instead received: " + received + "." );
+    }
+  }
+}
+/**
+ * Utilities for making it easy to test React components.
+ *
+ * See https://reactjs.org/docs/test-utils.html
+ *
+ * Todo: Support the entire DOM.scry query syntax. For now, these simple
+ * utilities will suffice for testing purposes.
+ * @lends ReactTestUtils
+ */
+
+
+var ReactTestUtils = {
+  renderIntoDocument: function (element) {
+    var div = document.createElement('div'); // None of our tests actually require attaching the container to the
+    // DOM, and doing so creates a mess that we rely on test isolation to
+    // clean up, so we're going to stop honoring the name of this method
+    // (and probably rename it eventually) if no problems arise.
+    // document.documentElement.appendChild(div);
+
+    return ReactDOM.render(element, div);
+  },
+  isElement: function (element) {
+    return React.isValidElement(element);
+  },
+  isElementOfType: function (inst, convenienceConstructor) {
+    return React.isValidElement(inst) && inst.type === convenienceConstructor;
+  },
+  isDOMComponent: function (inst) {
+    return !!(inst && inst.nodeType === ELEMENT_NODE && inst.tagName);
+  },
+  isDOMComponentElement: function (inst) {
+    return !!(inst && React.isValidElement(inst) && !!inst.tagName);
+  },
+  isCompositeComponent: function (inst) {
+    if (ReactTestUtils.isDOMComponent(inst)) {
+      // Accessing inst.setState warns; just return false as that'll be what
+      // this returns when we have DOM nodes as refs directly
+      return false;
+    }
+
+    return inst != null && typeof inst.render === 'function' && typeof inst.setState === 'function';
+  },
+  isCompositeComponentWithType: function (inst, type) {
+    if (!ReactTestUtils.isCompositeComponent(inst)) {
+      return false;
+    }
+
+    var internalInstance = get(inst);
+    var constructor = internalInstance.type;
+    return constructor === type;
+  },
+  findAllInRenderedTree: function (inst, test) {
+    validateClassInstance(inst, 'findAllInRenderedTree');
+
+    if (!inst) {
+      return [];
+    }
+
+    var internalInstance = get(inst);
+    return findAllInRenderedFiberTreeInternal(internalInstance, test);
+  },
+
+  /**
+   * Finds all instance of components in the rendered tree that are DOM
+   * components with the class name matching `className`.
+   * @return {array} an array of all the matches.
+   */
+  scryRenderedDOMComponentsWithClass: function (root, classNames) {
+    validateClassInstance(root, 'scryRenderedDOMComponentsWithClass');
+    return ReactTestUtils.findAllInRenderedTree(root, function (inst) {
+      if (ReactTestUtils.isDOMComponent(inst)) {
+        var className = inst.className;
+
+        if (typeof className !== 'string') {
+          // SVG, probably.
+          className = inst.getAttribute('class') || '';
+        }
+
+        var classList = className.split(/\s+/);
+
+        if (!Array.isArray(classNames)) {
+          if (!(classNames !== undefined)) {
+            {
+              throw Error( "TestUtils.scryRenderedDOMComponentsWithClass expects a className as a second argument." );
+            }
+          }
+
+          classNames = classNames.split(/\s+/);
+        }
+
+        return classNames.every(function (name) {
+          return classList.indexOf(name) !== -1;
+        });
+      }
+
+      return false;
+    });
+  },
+
+  /**
+   * Like scryRenderedDOMComponentsWithClass but expects there to be one result,
+   * and returns that one result, or throws exception if there is any other
+   * number of matches besides one.
+   * @return {!ReactDOMComponent} The one match.
+   */
+  findRenderedDOMComponentWithClass: function (root, className) {
+    validateClassInstance(root, 'findRenderedDOMComponentWithClass');
+    var all = ReactTestUtils.scryRenderedDOMComponentsWithClass(root, className);
+
+    if (all.length !== 1) {
+      throw new Error('Did not find exactly one match (found: ' + all.length + ') ' + 'for class:' + className);
+    }
+
+    return all[0];
+  },
+
+  /**
+   * Finds all instance of components in the rendered tree that are DOM
+   * components with the tag name matching `tagName`.
+   * @return {array} an array of all the matches.
+   */
+  scryRenderedDOMComponentsWithTag: function (root, tagName) {
+    validateClassInstance(root, 'scryRenderedDOMComponentsWithTag');
+    return ReactTestUtils.findAllInRenderedTree(root, function (inst) {
+      return ReactTestUtils.isDOMComponent(inst) && inst.tagName.toUpperCase() === tagName.toUpperCase();
+    });
+  },
+
+  /**
+   * Like scryRenderedDOMComponentsWithTag but expects there to be one result,
+   * and returns that one result, or throws exception if there is any other
+   * number of matches besides one.
+   * @return {!ReactDOMComponent} The one match.
+   */
+  findRenderedDOMComponentWithTag: function (root, tagName) {
+    validateClassInstance(root, 'findRenderedDOMComponentWithTag');
+    var all = ReactTestUtils.scryRenderedDOMComponentsWithTag(root, tagName);
+
+    if (all.length !== 1) {
+      throw new Error('Did not find exactly one match (found: ' + all.length + ') ' + 'for tag:' + tagName);
+    }
+
+    return all[0];
+  },
+
+  /**
+   * Finds all instances of components with type equal to `componentType`.
+   * @return {array} an array of all the matches.
+   */
+  scryRenderedComponentsWithType: function (root, componentType) {
+    validateClassInstance(root, 'scryRenderedComponentsWithType');
+    return ReactTestUtils.findAllInRenderedTree(root, function (inst) {
+      return ReactTestUtils.isCompositeComponentWithType(inst, componentType);
+    });
+  },
+
+  /**
+   * Same as `scryRenderedComponentsWithType` but expects there to be one result
+   * and returns that one result, or throws exception if there is any other
+   * number of matches besides one.
+   * @return {!ReactComponent} The one match.
+   */
+  findRenderedComponentWithType: function (root, componentType) {
+    validateClassInstance(root, 'findRenderedComponentWithType');
+    var all = ReactTestUtils.scryRenderedComponentsWithType(root, componentType);
+
+    if (all.length !== 1) {
+      throw new Error('Did not find exactly one match (found: ' + all.length + ') ' + 'for componentType:' + componentType);
+    }
+
+    return all[0];
+  },
+
+  /**
+   * Pass a mocked component module to this method to augment it with
+   * useful methods that allow it to be used as a dummy React component.
+   * Instead of rendering as usual, the component will become a simple
+   * <div> containing any provided children.
+   *
+   * @param {object} module the mock function object exported from a
+   *                        module that defines the component to be mocked
+   * @param {?string} mockTagName optional dummy root tag name to return
+   *                              from render method (overrides
+   *                              module.mockTagName if provided)
+   * @return {object} the ReactTestUtils object (for chaining)
+   */
+  mockComponent: function (module, mockTagName) {
+    {
+      if (!hasWarnedAboutDeprecatedMockComponent) {
+        hasWarnedAboutDeprecatedMockComponent = true;
+
+        warn('ReactTestUtils.mockComponent() is deprecated. ' + 'Use shallow rendering or jest.mock() instead.\n\n' + 'See https://fb.me/test-utils-mock-component for more information.');
+      }
+    }
+
+    mockTagName = mockTagName || module.mockTagName || 'div';
+    module.prototype.render.mockImplementation(function () {
+      return React.createElement(mockTagName, null, this.props.children);
+    });
+    return this;
+  },
+  nativeTouchData: function (x, y) {
+    return {
+      touches: [{
+        pageX: x,
+        pageY: y
+      }]
+    };
+  },
+  Simulate: null,
+  SimulateNative: {},
+  act: act
+};
+/**
+ * Exports:
+ *
+ * - `ReactTestUtils.Simulate.click(Element)`
+ * - `ReactTestUtils.Simulate.mouseMove(Element)`
+ * - `ReactTestUtils.Simulate.change(Element)`
+ * - ... (All keys from event plugin `eventTypes` objects)
+ */
+
+function makeSimulator(eventType) {
+  return function (domNode, eventData) {
+    if (!!React.isValidElement(domNode)) {
+      {
+        throw Error( "TestUtils.Simulate expected a DOM node as the first argument but received a React element. Pass the DOM node you wish to simulate the event on instead. Note that TestUtils.Simulate will not work if you are using shallow rendering." );
+      }
+    }
+
+    if (!!ReactTestUtils.isCompositeComponent(domNode)) {
+      {
+        throw Error( "TestUtils.Simulate expected a DOM node as the first argument but received a component instance. Pass the DOM node you wish to simulate the event on instead." );
+      }
+    }
+
+    var dispatchConfig = eventNameDispatchConfigs$1[eventType];
+    var fakeNativeEvent = new Event();
+    fakeNativeEvent.target = domNode;
+    fakeNativeEvent.type = eventType.toLowerCase(); // We don't use SyntheticEvent.getPooled in order to not have to worry about
+    // properly destroying any properties assigned from `eventData` upon release
+
+    var targetInst = getInstanceFromNode$1(domNode);
+    var event = new SyntheticEvent(dispatchConfig, targetInst, fakeNativeEvent, domNode); // Since we aren't using pooling, always persist the event. This will make
+    // sure it's marked and won't warn when setting additional properties.
+
+    event.persist();
+
+    _assign(event, eventData);
+
+    if (dispatchConfig.phasedRegistrationNames) {
+      accumulateTwoPhaseDispatches$1(event);
+    } else {
+      accumulateDirectDispatches$1(event);
+    }
+
+    ReactDOM.unstable_batchedUpdates(function () {
+      // Normally extractEvent enqueues a state restore, but we'll just always
+      // do that since we're by-passing it here.
+      enqueueStateRestore$1(domNode);
+      runEventsInBatch$1(event);
+    });
+    restoreStateIfNeeded$1();
+  };
+}
+
+function buildSimulators() {
+  ReactTestUtils.Simulate = {};
+  var eventType;
+
+  for (eventType in eventNameDispatchConfigs$1) {
+    /**
+     * @param {!Element|ReactDOMComponent} domComponentOrNode
+     * @param {?object} eventData Fake event data to use in SyntheticEvent.
+     */
+    ReactTestUtils.Simulate[eventType] = makeSimulator(eventType);
+  }
+}
+
+buildSimulators();
+/**
+ * Exports:
+ *
+ * - `ReactTestUtils.SimulateNative.click(Element/ReactDOMComponent)`
+ * - `ReactTestUtils.SimulateNative.mouseMove(Element/ReactDOMComponent)`
+ * - `ReactTestUtils.SimulateNative.mouseIn/ReactDOMComponent)`
+ * - `ReactTestUtils.SimulateNative.mouseOut(Element/ReactDOMComponent)`
+ * - ... (All keys from `BrowserEventConstants.topLevelTypes`)
+ *
+ * Note: Top level event types are a subset of the entire set of handler types
+ * (which include a broader set of "synthetic" events). For example, onDragDone
+ * is a synthetic event. Except when testing an event plugin or React's event
+ * handling code specifically, you probably want to use ReactTestUtils.Simulate
+ * to dispatch synthetic events.
+ */
+
+function makeNativeSimulator(eventType, topLevelType) {
+  return function (domComponentOrNode, nativeEventData) {
+    var fakeNativeEvent = new Event(eventType);
+
+    _assign(fakeNativeEvent, nativeEventData);
+
+    if (ReactTestUtils.isDOMComponent(domComponentOrNode)) {
+      simulateNativeEventOnDOMComponent(topLevelType, domComponentOrNode, fakeNativeEvent);
+    } else if (domComponentOrNode.tagName) {
+      // Will allow on actual dom nodes.
+      simulateNativeEventOnNode(topLevelType, domComponentOrNode, fakeNativeEvent);
+    }
+  };
+}
+
+[[TOP_ABORT, 'abort'], [TOP_ANIMATION_END, 'animationEnd'], [TOP_ANIMATION_ITERATION, 'animationIteration'], [TOP_ANIMATION_START, 'animationStart'], [TOP_BLUR, 'blur'], [TOP_CAN_PLAY_THROUGH, 'canPlayThrough'], [TOP_CAN_PLAY, 'canPlay'], [TOP_CANCEL, 'cancel'], [TOP_CHANGE, 'change'], [TOP_CLICK, 'click'], [TOP_CLOSE, 'close'], [TOP_COMPOSITION_END, 'compositionEnd'], [TOP_COMPOSITION_START, 'compositionStart'], [TOP_COMPOSITION_UPDATE, 'compositionUpdate'], [TOP_CONTEXT_MENU, 'contextMenu'], [TOP_COPY, 'copy'], [TOP_CUT, 'cut'], [TOP_DOUBLE_CLICK, 'doubleClick'], [TOP_DRAG_END, 'dragEnd'], [TOP_DRAG_ENTER, 'dragEnter'], [TOP_DRAG_EXIT, 'dragExit'], [TOP_DRAG_LEAVE, 'dragLeave'], [TOP_DRAG_OVER, 'dragOver'], [TOP_DRAG_START, 'dragStart'], [TOP_DRAG, 'drag'], [TOP_DROP, 'drop'], [TOP_DURATION_CHANGE, 'durationChange'], [TOP_EMPTIED, 'emptied'], [TOP_ENCRYPTED, 'encrypted'], [TOP_ENDED, 'ended'], [TOP_ERROR, 'error'], [TOP_FOCUS, 'focus'], [TOP_INPUT, 'input'], [TOP_KEY_DOWN, 'keyDown'], [TOP_KEY_PRESS, 'keyPress'], [TOP_KEY_UP, 'keyUp'], [TOP_LOAD_START, 'loadStart'], [TOP_LOAD_START, 'loadStart'], [TOP_LOAD, 'load'], [TOP_LOADED_DATA, 'loadedData'], [TOP_LOADED_METADATA, 'loadedMetadata'], [TOP_MOUSE_DOWN, 'mouseDown'], [TOP_MOUSE_MOVE, 'mouseMove'], [TOP_MOUSE_OUT, 'mouseOut'], [TOP_MOUSE_OVER, 'mouseOver'], [TOP_MOUSE_UP, 'mouseUp'], [TOP_PASTE, 'paste'], [TOP_PAUSE, 'pause'], [TOP_PLAY, 'play'], [TOP_PLAYING, 'playing'], [TOP_PROGRESS, 'progress'], [TOP_RATE_CHANGE, 'rateChange'], [TOP_SCROLL, 'scroll'], [TOP_SEEKED, 'seeked'], [TOP_SEEKING, 'seeking'], [TOP_SELECTION_CHANGE, 'selectionChange'], [TOP_STALLED, 'stalled'], [TOP_SUSPEND, 'suspend'], [TOP_TEXT_INPUT, 'textInput'], [TOP_TIME_UPDATE, 'timeUpdate'], [TOP_TOGGLE, 'toggle'], [TOP_TOUCH_CANCEL, 'touchCancel'], [TOP_TOUCH_END, 'touchEnd'], [TOP_TOUCH_MOVE, 'touchMove'], [TOP_TOUCH_START, 'touchStart'], [TOP_TRANSITION_END, 'transitionEnd'], [TOP_VOLUME_CHANGE, 'volumeChange'], [TOP_WAITING, 'waiting'], [TOP_WHEEL, 'wheel']].forEach(function (_ref) {
+  var topLevelType = _ref[0],
+      eventType = _ref[1];
+
+  /**
+   * @param {!Element|ReactDOMComponent} domComponentOrNode
+   * @param {?Event} nativeEventData Fake native event to use in SyntheticEvent.
+   */
+  ReactTestUtils.SimulateNative[eventType] = makeNativeSimulator(eventType, topLevelType);
+});
+
+// TODO: decide on the top-level export form.
+// This is hacky but makes it work with both Rollup and Jest.
+
+
+var testUtils = ReactTestUtils.default || ReactTestUtils;
+
+module.exports = testUtils;
+  })();
+}
diff --git a/igv_component/node_modules/react-dom/cjs/react-dom-test-utils.production.min.js b/igv_component/node_modules/react-dom/cjs/react-dom-test-utils.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..1d00273057945fb8e56d39d87272a2ca4f5a7a83
--- /dev/null
+++ b/igv_component/node_modules/react-dom/cjs/react-dom-test-utils.production.min.js
@@ -0,0 +1,35 @@
+/** @license React v16.14.0
+ * react-dom-test-utils.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';var g=require("object-assign"),k=require("react"),m=require("react-dom"),n=require("scheduler");function p(a){for(var b="https://reactjs.org/docs/error-decoder.html?invariant="+a,c=1;c<arguments.length;c++)b+="&args[]="+encodeURIComponent(arguments[c]);return"Minified React error #"+a+"; visit "+b+" for the full message or use the non-minified dev environment for full errors and additional helpful warnings."}var q=k.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;
+q.hasOwnProperty("ReactCurrentDispatcher")||(q.ReactCurrentDispatcher={current:null});q.hasOwnProperty("ReactCurrentBatchConfig")||(q.ReactCurrentBatchConfig={suspense:null});function r(a){var b=a,c=a;if(a.alternate)for(;b.return;)b=b.return;else{a=b;do b=a,0!==(b.effectTag&1026)&&(c=b.return),a=b.return;while(a)}return 3===b.tag?c:null}function t(a){if(r(a)!==a)throw Error(p(188));}
+function u(a){var b=a.alternate;if(!b){b=r(a);if(null===b)throw Error(p(188));return b!==a?null:a}for(var c=a,e=b;;){var d=c.return;if(null===d)break;var f=d.alternate;if(null===f){e=d.return;if(null!==e){c=e;continue}break}if(d.child===f.child){for(f=d.child;f;){if(f===c)return t(d),a;if(f===e)return t(d),b;f=f.sibling}throw Error(p(188));}if(c.return!==e.return)c=d,e=f;else{for(var h=!1,l=d.child;l;){if(l===c){h=!0;c=d;e=f;break}if(l===e){h=!0;e=d;c=f;break}l=l.sibling}if(!h){for(l=f.child;l;){if(l===
+c){h=!0;c=f;e=d;break}if(l===e){h=!0;e=f;c=d;break}l=l.sibling}if(!h)throw Error(p(189));}}if(c.alternate!==e)throw Error(p(190));}if(3!==c.tag)throw Error(p(188));return c.stateNode.current===c?a:b}function v(){return!0}function w(){return!1}
+function x(a,b,c,e){this.dispatchConfig=a;this._targetInst=b;this.nativeEvent=c;a=this.constructor.Interface;for(var d in a)a.hasOwnProperty(d)&&((b=a[d])?this[d]=b(c):"target"===d?this.target=e:this[d]=c[d]);this.isDefaultPrevented=(null!=c.defaultPrevented?c.defaultPrevented:!1===c.returnValue)?v:w;this.isPropagationStopped=w;return this}
+g(x.prototype,{preventDefault:function(){this.defaultPrevented=!0;var a=this.nativeEvent;a&&(a.preventDefault?a.preventDefault():"unknown"!==typeof a.returnValue&&(a.returnValue=!1),this.isDefaultPrevented=v)},stopPropagation:function(){var a=this.nativeEvent;a&&(a.stopPropagation?a.stopPropagation():"unknown"!==typeof a.cancelBubble&&(a.cancelBubble=!0),this.isPropagationStopped=v)},persist:function(){this.isPersistent=v},isPersistent:w,destructor:function(){var a=this.constructor.Interface,b;for(b in a)this[b]=
+null;this.nativeEvent=this._targetInst=this.dispatchConfig=null;this.isPropagationStopped=this.isDefaultPrevented=w;this._dispatchInstances=this._dispatchListeners=null}});x.Interface={type:null,target:null,currentTarget:function(){return null},eventPhase:null,bubbles:null,cancelable:null,timeStamp:function(a){return a.timeStamp||Date.now()},defaultPrevented:null,isTrusted:null};
+x.extend=function(a){function b(){}function c(){return e.apply(this,arguments)}var e=this;b.prototype=e.prototype;var d=new b;g(d,c.prototype);c.prototype=d;c.prototype.constructor=c;c.Interface=g({},e.Interface,a);c.extend=e.extend;y(c);return c};y(x);function z(a,b,c,e){if(this.eventPool.length){var d=this.eventPool.pop();this.call(d,a,b,c,e);return d}return new this(a,b,c,e)}
+function A(a){if(!(a instanceof this))throw Error(p(279));a.destructor();10>this.eventPool.length&&this.eventPool.push(a)}function y(a){a.eventPool=[];a.getPooled=z;a.release=A}var B=!("undefined"===typeof window||"undefined"===typeof window.document||"undefined"===typeof window.document.createElement);function C(a,b){var c={};c[a.toLowerCase()]=b.toLowerCase();c["Webkit"+a]="webkit"+b;c["Moz"+a]="moz"+b;return c}
+var D={animationend:C("Animation","AnimationEnd"),animationiteration:C("Animation","AnimationIteration"),animationstart:C("Animation","AnimationStart"),transitionend:C("Transition","TransitionEnd")},E={},F={};B&&(F=document.createElement("div").style,"AnimationEvent"in window||(delete D.animationend.animation,delete D.animationiteration.animation,delete D.animationstart.animation),"TransitionEvent"in window||delete D.transitionend.transition);
+function G(a){if(E[a])return E[a];if(!D[a])return a;var b=D[a],c;for(c in b)if(b.hasOwnProperty(c)&&c in F)return E[a]=b[c];return a}var H=G("animationend"),I=G("animationiteration"),J=G("animationstart"),aa=G("transitionend"),K=null;function ba(a){if(null===K)try{var b=("require"+Math.random()).slice(0,7);K=(module&&module[b])("timers").setImmediate}catch(c){K=function(a){var b=new MessageChannel;b.port1.onmessage=a;b.port2.postMessage(void 0)}}return K(a)}
+var L=m.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Events,ca=L[11],M=L[12],da=m.unstable_batchedUpdates,N=q.IsSomeRendererActing,O="function"===typeof n.unstable_flushAllWithoutAsserting,P=n.unstable_flushAllWithoutAsserting||function(){for(var a=!1;ca();)a=!0;return a};function Q(a){try{P(),ba(function(){P()?Q(a):a()})}catch(b){a(b)}}var R=0,S=!1,ea=m.findDOMNode,T=m.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Events,fa=T[0],U=T[4],ha=T[5],ia=T[6],ja=T[7],ka=T[8],V=T[9],la=T[10];
+function W(){}function ma(a,b){if(!a)return[];a=u(a);if(!a)return[];for(var c=a,e=[];;){if(5===c.tag||6===c.tag||1===c.tag||0===c.tag){var d=c.stateNode;b(d)&&e.push(d)}if(c.child)c.child.return=c,c=c.child;else{if(c===a)return e;for(;!c.sibling;){if(!c.return||c.return===a)return e;c=c.return}c.sibling.return=c.return;c=c.sibling}}}
+function X(a,b){if(a&&!a._reactInternalFiber){var c=""+a;a=Array.isArray(a)?"an array":a&&1===a.nodeType&&a.tagName?"a DOM node":"[object Object]"===c?"object with keys {"+Object.keys(a).join(", ")+"}":c;throw Error(p(286,b,a));}}
+var Y={renderIntoDocument:function(a){var b=document.createElement("div");return m.render(a,b)},isElement:function(a){return k.isValidElement(a)},isElementOfType:function(a,b){return k.isValidElement(a)&&a.type===b},isDOMComponent:function(a){return!(!a||1!==a.nodeType||!a.tagName)},isDOMComponentElement:function(a){return!!(a&&k.isValidElement(a)&&a.tagName)},isCompositeComponent:function(a){return Y.isDOMComponent(a)?!1:null!=a&&"function"===typeof a.render&&"function"===typeof a.setState},isCompositeComponentWithType:function(a,
+b){return Y.isCompositeComponent(a)?a._reactInternalFiber.type===b:!1},findAllInRenderedTree:function(a,b){X(a,"findAllInRenderedTree");return a?ma(a._reactInternalFiber,b):[]},scryRenderedDOMComponentsWithClass:function(a,b){X(a,"scryRenderedDOMComponentsWithClass");return Y.findAllInRenderedTree(a,function(a){if(Y.isDOMComponent(a)){var c=a.className;"string"!==typeof c&&(c=a.getAttribute("class")||"");var d=c.split(/\s+/);if(!Array.isArray(b)){if(void 0===b)throw Error(p(11));b=b.split(/\s+/)}return b.every(function(a){return-1!==
+d.indexOf(a)})}return!1})},findRenderedDOMComponentWithClass:function(a,b){X(a,"findRenderedDOMComponentWithClass");a=Y.scryRenderedDOMComponentsWithClass(a,b);if(1!==a.length)throw Error("Did not find exactly one match (found: "+a.length+") for class:"+b);return a[0]},scryRenderedDOMComponentsWithTag:function(a,b){X(a,"scryRenderedDOMComponentsWithTag");return Y.findAllInRenderedTree(a,function(a){return Y.isDOMComponent(a)&&a.tagName.toUpperCase()===b.toUpperCase()})},findRenderedDOMComponentWithTag:function(a,
+b){X(a,"findRenderedDOMComponentWithTag");a=Y.scryRenderedDOMComponentsWithTag(a,b);if(1!==a.length)throw Error("Did not find exactly one match (found: "+a.length+") for tag:"+b);return a[0]},scryRenderedComponentsWithType:function(a,b){X(a,"scryRenderedComponentsWithType");return Y.findAllInRenderedTree(a,function(a){return Y.isCompositeComponentWithType(a,b)})},findRenderedComponentWithType:function(a,b){X(a,"findRenderedComponentWithType");a=Y.scryRenderedComponentsWithType(a,b);if(1!==a.length)throw Error("Did not find exactly one match (found: "+
+a.length+") for componentType:"+b);return a[0]},mockComponent:function(a,b){b=b||a.mockTagName||"div";a.prototype.render.mockImplementation(function(){return k.createElement(b,null,this.props.children)});return this},nativeTouchData:function(a,b){return{touches:[{pageX:a,pageY:b}]}},Simulate:null,SimulateNative:{},act:function(a){function b(){R--;N.current=c;M.current=e}!1===S&&(S=!0,console.error("act(...) is not supported in production builds of React, and might not behave as expected."));R++;var c=
+N.current;var e=M.current;N.current=!0;M.current=!0;try{var d=da(a)}catch(f){throw b(),f;}if(null!==d&&"object"===typeof d&&"function"===typeof d.then)return{then:function(a,e){d.then(function(){1<R||!0===O&&!0===c?(b(),a()):Q(function(c){b();c?e(c):a()})},function(a){b();e(a)})}};try{1!==R||!1!==O&&!1!==c||P(),b()}catch(f){throw b(),f;}return{then:function(a){a()}}}};
+function na(a){return function(b,c){if(k.isValidElement(b))throw Error(p(228));if(Y.isCompositeComponent(b))throw Error(p(229));var e=U[a],d=new W;d.target=b;d.type=a.toLowerCase();var f=fa(b),h=new x(e,f,d,b);h.persist();g(h,c);e.phasedRegistrationNames?ha(h):ia(h);m.unstable_batchedUpdates(function(){ja(b);la(h)});ka()}}Y.Simulate={};for(var Z in U)Y.Simulate[Z]=na(Z);
+function oa(a,b){return function(c,e){var d=new W(a);g(d,e);Y.isDOMComponent(c)?(c=ea(c),d.target=c,V(b,1,document,d)):c.tagName&&(d.target=c,V(b,1,document,d))}}
+[["abort","abort"],[H,"animationEnd"],[I,"animationIteration"],[J,"animationStart"],["blur","blur"],["canplaythrough","canPlayThrough"],["canplay","canPlay"],["cancel","cancel"],["change","change"],["click","click"],["close","close"],["compositionend","compositionEnd"],["compositionstart","compositionStart"],["compositionupdate","compositionUpdate"],["contextmenu","contextMenu"],["copy","copy"],["cut","cut"],["dblclick","doubleClick"],["dragend","dragEnd"],["dragenter","dragEnter"],["dragexit","dragExit"],
+["dragleave","dragLeave"],["dragover","dragOver"],["dragstart","dragStart"],["drag","drag"],["drop","drop"],["durationchange","durationChange"],["emptied","emptied"],["encrypted","encrypted"],["ended","ended"],["error","error"],["focus","focus"],["input","input"],["keydown","keyDown"],["keypress","keyPress"],["keyup","keyUp"],["loadstart","loadStart"],["loadstart","loadStart"],["load","load"],["loadeddata","loadedData"],["loadedmetadata","loadedMetadata"],["mousedown","mouseDown"],["mousemove","mouseMove"],
+["mouseout","mouseOut"],["mouseover","mouseOver"],["mouseup","mouseUp"],["paste","paste"],["pause","pause"],["play","play"],["playing","playing"],["progress","progress"],["ratechange","rateChange"],["scroll","scroll"],["seeked","seeked"],["seeking","seeking"],["selectionchange","selectionChange"],["stalled","stalled"],["suspend","suspend"],["textInput","textInput"],["timeupdate","timeUpdate"],["toggle","toggle"],["touchcancel","touchCancel"],["touchend","touchEnd"],["touchmove","touchMove"],["touchstart",
+"touchStart"],[aa,"transitionEnd"],["volumechange","volumeChange"],["waiting","waiting"],["wheel","wheel"]].forEach(function(a){var b=a[1];Y.SimulateNative[b]=oa(b,a[0])});module.exports=Y.default||Y;
diff --git a/igv_component/node_modules/react-dom/cjs/react-dom-unstable-fizz.browser.development.js b/igv_component/node_modules/react-dom/cjs/react-dom-unstable-fizz.browser.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..0944f7b51a1a9a47f8a103e724101a073bc19e65
--- /dev/null
+++ b/igv_component/node_modules/react-dom/cjs/react-dom-unstable-fizz.browser.development.js
@@ -0,0 +1,141 @@
+/** @license React v16.13.1
+ * react-dom-unstable-fizz.browser.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+function scheduleWork(callback) {
+  callback();
+}
+function flushBuffered(destination) {// WHATWG Streams do not yet have a way to flush the underlying
+  // transform streams. https://github.com/whatwg/streams/issues/960
+}
+function writeChunk(destination, buffer) {
+  destination.enqueue(buffer);
+  return destination.desiredSize > 0;
+}
+function close(destination) {
+  destination.close();
+}
+var textEncoder = new TextEncoder();
+function convertStringToBuffer(content) {
+  return textEncoder.encode(content);
+}
+
+function formatChunkAsString(type, props) {
+  var str = '<' + type + '>';
+
+  if (typeof props.children === 'string') {
+    str += props.children;
+  }
+
+  str += '</' + type + '>';
+  return str;
+}
+function formatChunk(type, props) {
+  return convertStringToBuffer(formatChunkAsString(type, props));
+}
+
+// The Symbol used to tag the ReactElement-like types. If there is no native Symbol
+// nor polyfill, then a plain number is used for performance.
+var hasSymbol = typeof Symbol === 'function' && Symbol.for;
+var REACT_ELEMENT_TYPE = hasSymbol ? Symbol.for('react.element') : 0xeac7;
+
+function createRequest(children, destination) {
+  return {
+    destination: destination,
+    children: children,
+    completedChunks: [],
+    flowing: false
+  };
+}
+
+function performWork(request) {
+  var element = request.children;
+  request.children = null;
+
+  if (element && element.$$typeof !== REACT_ELEMENT_TYPE) {
+    return;
+  }
+
+  var type = element.type;
+  var props = element.props;
+
+  if (typeof type !== 'string') {
+    return;
+  }
+
+  request.completedChunks.push(formatChunk(type, props));
+
+  if (request.flowing) {
+    flushCompletedChunks(request);
+  }
+
+  flushBuffered(request.destination);
+}
+
+function flushCompletedChunks(request) {
+  var destination = request.destination;
+  var chunks = request.completedChunks;
+  request.completedChunks = [];
+
+  try {
+    for (var i = 0; i < chunks.length; i++) {
+      var chunk = chunks[i];
+      writeChunk(destination, chunk);
+    }
+  } finally {
+  }
+
+  close(destination);
+}
+
+function startWork(request) {
+  request.flowing = true;
+  scheduleWork(function () {
+    return performWork(request);
+  });
+}
+function startFlowing(request) {
+  request.flowing = false;
+  flushCompletedChunks(request);
+}
+
+function renderToReadableStream(children) {
+  var request;
+  return new ReadableStream({
+    start: function (controller) {
+      request = createRequest(children, controller);
+      startWork(request);
+    },
+    pull: function (controller) {
+      startFlowing(request);
+    },
+    cancel: function (reason) {}
+  });
+}
+
+var ReactDOMFizzServerBrowser = {
+  renderToReadableStream: renderToReadableStream
+};
+
+// TODO: decide on the top-level export form.
+// This is hacky but makes it work with both Rollup and Jest
+
+
+var unstableFizz_browser = ReactDOMFizzServerBrowser.default || ReactDOMFizzServerBrowser;
+
+module.exports = unstableFizz_browser;
+  })();
+}
diff --git a/igv_component/node_modules/react-dom/cjs/react-dom-unstable-fizz.browser.production.min.js b/igv_component/node_modules/react-dom/cjs/react-dom-unstable-fizz.browser.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..765b8d8366b072b7ea9360f9879fb5cd729ceec1
--- /dev/null
+++ b/igv_component/node_modules/react-dom/cjs/react-dom-unstable-fizz.browser.production.min.js
@@ -0,0 +1,11 @@
+/** @license React v16.13.1
+ * react-dom-unstable-fizz.browser.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';var e=new TextEncoder;function g(b,c){var a="<"+b+">";"string"===typeof c.children&&(a+=c.children);return a+("</"+b+">")}var h="function"===typeof Symbol&&Symbol.for?Symbol.for("react.element"):60103;function k(b){var c=b.destination,a=b.completedChunks;b.completedChunks=[];for(b=0;b<a.length;b++)c.enqueue(a[b]);c.close()}
+var l={renderToReadableStream:function(b){var c;return new ReadableStream({start:function(a){a=c={destination:a,children:b,completedChunks:[],flowing:!1};a.flowing=!0;var d=a.children;a.children=null;if(!d||d.$$typeof===h){var f=d.type;d=d.props;"string"===typeof f&&(a.completedChunks.push(e.encode(g(f,d))),a.flowing&&k(a))}},pull:function(){var a=c;a.flowing=!1;k(a)},cancel:function(){}})}};module.exports=l.default||l;
diff --git a/igv_component/node_modules/react-dom/cjs/react-dom-unstable-fizz.node.development.js b/igv_component/node_modules/react-dom/cjs/react-dom-unstable-fizz.node.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..6e5d719a0389b6820bf69c88d45cc7cbcb3324cc
--- /dev/null
+++ b/igv_component/node_modules/react-dom/cjs/react-dom-unstable-fizz.node.development.js
@@ -0,0 +1,162 @@
+/** @license React v16.13.1
+ * react-dom-unstable-fizz.node.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+function scheduleWork(callback) {
+  setImmediate(callback);
+}
+function flushBuffered(destination) {
+  // If we don't have any more data to send right now.
+  // Flush whatever is in the buffer to the wire.
+  if (typeof destination.flush === 'function') {
+    // http.createServer response have flush(), but it has a different meaning and
+    // is deprecated in favor of flushHeaders(). Detect to avoid a warning.
+    if (typeof destination.flushHeaders !== 'function') {
+      // By convention the Zlib streams provide a flush function for this purpose.
+      destination.flush();
+    }
+  }
+}
+function beginWriting(destination) {
+  // Older Node streams like http.createServer don't have this.
+  if (typeof destination.cork === 'function') {
+    destination.cork();
+  }
+}
+function writeChunk(destination, buffer) {
+  var nodeBuffer = buffer; // close enough
+
+  return destination.write(nodeBuffer);
+}
+function completeWriting(destination) {
+  // Older Node streams like http.createServer don't have this.
+  if (typeof destination.uncork === 'function') {
+    destination.uncork();
+  }
+}
+function close(destination) {
+  destination.end();
+}
+function convertStringToBuffer(content) {
+  return Buffer.from(content, 'utf8');
+}
+
+function formatChunkAsString(type, props) {
+  var str = '<' + type + '>';
+
+  if (typeof props.children === 'string') {
+    str += props.children;
+  }
+
+  str += '</' + type + '>';
+  return str;
+}
+function formatChunk(type, props) {
+  return convertStringToBuffer(formatChunkAsString(type, props));
+}
+
+// The Symbol used to tag the ReactElement-like types. If there is no native Symbol
+// nor polyfill, then a plain number is used for performance.
+var hasSymbol = typeof Symbol === 'function' && Symbol.for;
+var REACT_ELEMENT_TYPE = hasSymbol ? Symbol.for('react.element') : 0xeac7;
+
+function createRequest(children, destination) {
+  return {
+    destination: destination,
+    children: children,
+    completedChunks: [],
+    flowing: false
+  };
+}
+
+function performWork(request) {
+  var element = request.children;
+  request.children = null;
+
+  if (element && element.$$typeof !== REACT_ELEMENT_TYPE) {
+    return;
+  }
+
+  var type = element.type;
+  var props = element.props;
+
+  if (typeof type !== 'string') {
+    return;
+  }
+
+  request.completedChunks.push(formatChunk(type, props));
+
+  if (request.flowing) {
+    flushCompletedChunks(request);
+  }
+
+  flushBuffered(request.destination);
+}
+
+function flushCompletedChunks(request) {
+  var destination = request.destination;
+  var chunks = request.completedChunks;
+  request.completedChunks = [];
+  beginWriting(destination);
+
+  try {
+    for (var i = 0; i < chunks.length; i++) {
+      var chunk = chunks[i];
+      writeChunk(destination, chunk);
+    }
+  } finally {
+    completeWriting(destination);
+  }
+
+  close(destination);
+}
+
+function startWork(request) {
+  request.flowing = true;
+  scheduleWork(function () {
+    return performWork(request);
+  });
+}
+function startFlowing(request) {
+  request.flowing = false;
+  flushCompletedChunks(request);
+}
+
+function createDrainHandler(destination, request) {
+  return function () {
+    return startFlowing(request);
+  };
+}
+
+function pipeToNodeWritable(children, destination) {
+  var request = createRequest(children, destination);
+  destination.on('drain', createDrainHandler(destination, request));
+  startWork(request);
+}
+
+var ReactDOMFizzServerNode = {
+  pipeToNodeWritable: pipeToNodeWritable
+};
+
+// TODO: decide on the top-level export form.
+// This is hacky but makes it work with both Rollup and Jest
+
+
+var unstableFizz_node = ReactDOMFizzServerNode.default || ReactDOMFizzServerNode;
+
+module.exports = unstableFizz_node;
+  })();
+}
diff --git a/igv_component/node_modules/react-dom/cjs/react-dom-unstable-fizz.node.production.min.js b/igv_component/node_modules/react-dom/cjs/react-dom-unstable-fizz.node.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..d15e0754351410b7355652a6affef91aba0943bb
--- /dev/null
+++ b/igv_component/node_modules/react-dom/cjs/react-dom-unstable-fizz.node.production.min.js
@@ -0,0 +1,12 @@
+/** @license React v16.13.1
+ * react-dom-unstable-fizz.node.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';function d(a,b){var c="<"+a+">";"string"===typeof b.children&&(c+=b.children);return c+("</"+a+">")}var e="function"===typeof Symbol&&Symbol.for?Symbol.for("react.element"):60103;function f(a){var b=a.destination,c=a.completedChunks;a.completedChunks=[];"function"===typeof b.cork&&b.cork();try{for(a=0;a<c.length;a++)b.write(c[a])}finally{"function"===typeof b.uncork&&b.uncork()}b.end()}
+function g(a){a.flowing=!0;setImmediate(function(){var b=a.children;a.children=null;if(!b||b.$$typeof===e){var c=b.type;b=b.props;"string"===typeof c&&(a.completedChunks.push(Buffer.from(d(c,b),"utf8")),a.flowing&&f(a),c=a.destination,"function"===typeof c.flush&&"function"!==typeof c.flushHeaders&&c.flush())}})}function h(a,b){return function(){b.flowing=!1;f(b)}}var k={pipeToNodeWritable:function(a,b){a={destination:b,children:a,completedChunks:[],flowing:!1};b.on("drain",h(b,a));g(a)}};
+module.exports=k.default||k;
diff --git a/igv_component/node_modules/react-dom/cjs/react-dom-unstable-native-dependencies.development.js b/igv_component/node_modules/react-dom/cjs/react-dom-unstable-native-dependencies.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..f11a7b84e527548995e16e420807d77ce28f72db
--- /dev/null
+++ b/igv_component/node_modules/react-dom/cjs/react-dom-unstable-native-dependencies.development.js
@@ -0,0 +1,1629 @@
+/** @license React v16.13.1
+ * react-dom-unstable-native-dependencies.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+var ReactDOM = require('react-dom');
+var React = require('react');
+var _assign = require('object-assign');
+
+var ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED; // Prevent newer renderers from RTE when used with older react package versions.
+// Current owner and dispatcher used to share the same ref,
+// but PR #14548 split them out to better support the react-debug-tools package.
+
+if (!ReactSharedInternals.hasOwnProperty('ReactCurrentDispatcher')) {
+  ReactSharedInternals.ReactCurrentDispatcher = {
+    current: null
+  };
+}
+
+if (!ReactSharedInternals.hasOwnProperty('ReactCurrentBatchConfig')) {
+  ReactSharedInternals.ReactCurrentBatchConfig = {
+    suspense: null
+  };
+}
+
+// by calls to these methods by a Babel plugin.
+//
+// In PROD (or in packages without access to React internals),
+// they are left as they are instead.
+
+function warn(format) {
+  {
+    for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+      args[_key - 1] = arguments[_key];
+    }
+
+    printWarning('warn', format, args);
+  }
+}
+function error(format) {
+  {
+    for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+      args[_key2 - 1] = arguments[_key2];
+    }
+
+    printWarning('error', format, args);
+  }
+}
+
+function printWarning(level, format, args) {
+  // When changing this logic, you might want to also
+  // update consoleWithStackDev.www.js as well.
+  {
+    var hasExistingStack = args.length > 0 && typeof args[args.length - 1] === 'string' && args[args.length - 1].indexOf('\n    in') === 0;
+
+    if (!hasExistingStack) {
+      var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+      var stack = ReactDebugCurrentFrame.getStackAddendum();
+
+      if (stack !== '') {
+        format += '%s';
+        args = args.concat([stack]);
+      }
+    }
+
+    var argsWithFormat = args.map(function (item) {
+      return '' + item;
+    }); // Careful: RN currently depends on this prefix
+
+    argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it
+    // breaks IE9: https://github.com/facebook/react/issues/13610
+    // eslint-disable-next-line react-internal/no-production-logging
+
+    Function.prototype.apply.call(console[level], console, argsWithFormat);
+
+    try {
+      // --- Welcome to debugging React ---
+      // This error was thrown as a convenience so that you can use this stack
+      // to find the callsite that caused this warning to fire.
+      var argIndex = 0;
+      var message = 'Warning: ' + format.replace(/%s/g, function () {
+        return args[argIndex++];
+      });
+      throw new Error(message);
+    } catch (x) {}
+  }
+}
+
+{
+  // In DEV mode, we swap out invokeGuardedCallback for a special version
+  // that plays more nicely with the browser's DevTools. The idea is to preserve
+  // "Pause on exceptions" behavior. Because React wraps all user-provided
+  // functions in invokeGuardedCallback, and the production version of
+  // invokeGuardedCallback uses a try-catch, all user exceptions are treated
+  // like caught exceptions, and the DevTools won't pause unless the developer
+  // takes the extra step of enabling pause on caught exceptions. This is
+  // unintuitive, though, because even though React has caught the error, from
+  // the developer's perspective, the error is uncaught.
+  //
+  // To preserve the expected "Pause on exceptions" behavior, we don't use a
+  // try-catch in DEV. Instead, we synchronously dispatch a fake event to a fake
+  // DOM node, and call the user-provided callback from inside an event handler
+  // for that fake event. If the callback throws, the error is "captured" using
+  // a global event handler. But because the error happens in a different
+  // event loop context, it does not interrupt the normal program flow.
+  // Effectively, this gives us try-catch behavior without actually using
+  // try-catch. Neat!
+  // Check that the browser supports the APIs we need to implement our special
+  // DEV version of invokeGuardedCallback
+  if (typeof window !== 'undefined' && typeof window.dispatchEvent === 'function' && typeof document !== 'undefined' && typeof document.createEvent === 'function') {
+    var fakeNode = document.createElement('react');
+  }
+}
+
+var getFiberCurrentPropsFromNode = null;
+var getInstanceFromNode = null;
+var getNodeFromInstance = null;
+function setComponentTree(getFiberCurrentPropsFromNodeImpl, getInstanceFromNodeImpl, getNodeFromInstanceImpl) {
+  getFiberCurrentPropsFromNode = getFiberCurrentPropsFromNodeImpl;
+  getInstanceFromNode = getInstanceFromNodeImpl;
+  getNodeFromInstance = getNodeFromInstanceImpl;
+
+  {
+    if (!getNodeFromInstance || !getInstanceFromNode) {
+      error('EventPluginUtils.setComponentTree(...): Injected ' + 'module is missing getNodeFromInstance or getInstanceFromNode.');
+    }
+  }
+}
+var validateEventDispatches;
+
+{
+  validateEventDispatches = function (event) {
+    var dispatchListeners = event._dispatchListeners;
+    var dispatchInstances = event._dispatchInstances;
+    var listenersIsArr = Array.isArray(dispatchListeners);
+    var listenersLen = listenersIsArr ? dispatchListeners.length : dispatchListeners ? 1 : 0;
+    var instancesIsArr = Array.isArray(dispatchInstances);
+    var instancesLen = instancesIsArr ? dispatchInstances.length : dispatchInstances ? 1 : 0;
+
+    if (instancesIsArr !== listenersIsArr || instancesLen !== listenersLen) {
+      error('EventPluginUtils: Invalid `event`.');
+    }
+  };
+}
+/**
+ * Standard/simple iteration through an event's collected dispatches, but stops
+ * at the first dispatch execution returning true, and returns that id.
+ *
+ * @return {?string} id of the first dispatch execution who's listener returns
+ * true, or null if no listener returned true.
+ */
+
+function executeDispatchesInOrderStopAtTrueImpl(event) {
+  var dispatchListeners = event._dispatchListeners;
+  var dispatchInstances = event._dispatchInstances;
+
+  {
+    validateEventDispatches(event);
+  }
+
+  if (Array.isArray(dispatchListeners)) {
+    for (var i = 0; i < dispatchListeners.length; i++) {
+      if (event.isPropagationStopped()) {
+        break;
+      } // Listeners and Instances are two parallel arrays that are always in sync.
+
+
+      if (dispatchListeners[i](event, dispatchInstances[i])) {
+        return dispatchInstances[i];
+      }
+    }
+  } else if (dispatchListeners) {
+    if (dispatchListeners(event, dispatchInstances)) {
+      return dispatchInstances;
+    }
+  }
+
+  return null;
+}
+/**
+ * @see executeDispatchesInOrderStopAtTrueImpl
+ */
+
+
+function executeDispatchesInOrderStopAtTrue(event) {
+  var ret = executeDispatchesInOrderStopAtTrueImpl(event);
+  event._dispatchInstances = null;
+  event._dispatchListeners = null;
+  return ret;
+}
+/**
+ * Execution of a "direct" dispatch - there must be at most one dispatch
+ * accumulated on the event or it is considered an error. It doesn't really make
+ * sense for an event with multiple dispatches (bubbled) to keep track of the
+ * return values at each dispatch execution, but it does tend to make sense when
+ * dealing with "direct" dispatches.
+ *
+ * @return {*} The return value of executing the single dispatch.
+ */
+
+function executeDirectDispatch(event) {
+  {
+    validateEventDispatches(event);
+  }
+
+  var dispatchListener = event._dispatchListeners;
+  var dispatchInstance = event._dispatchInstances;
+
+  if (!!Array.isArray(dispatchListener)) {
+    {
+      throw Error( "executeDirectDispatch(...): Invalid `event`." );
+    }
+  }
+
+  event.currentTarget = dispatchListener ? getNodeFromInstance(dispatchInstance) : null;
+  var res = dispatchListener ? dispatchListener(event) : null;
+  event.currentTarget = null;
+  event._dispatchListeners = null;
+  event._dispatchInstances = null;
+  return res;
+}
+/**
+ * @param {SyntheticEvent} event
+ * @return {boolean} True iff number of dispatches accumulated is greater than 0.
+ */
+
+function hasDispatches(event) {
+  return !!event._dispatchListeners;
+}
+
+var HostComponent = 5;
+
+function getParent(inst) {
+  do {
+    inst = inst.return; // TODO: If this is a HostRoot we might want to bail out.
+    // That is depending on if we want nested subtrees (layers) to bubble
+    // events to their parent. We could also go through parentNode on the
+    // host node but that wouldn't work for React Native and doesn't let us
+    // do the portal feature.
+  } while (inst && inst.tag !== HostComponent);
+
+  if (inst) {
+    return inst;
+  }
+
+  return null;
+}
+/**
+ * Return the lowest common ancestor of A and B, or null if they are in
+ * different trees.
+ */
+
+
+function getLowestCommonAncestor(instA, instB) {
+  var depthA = 0;
+
+  for (var tempA = instA; tempA; tempA = getParent(tempA)) {
+    depthA++;
+  }
+
+  var depthB = 0;
+
+  for (var tempB = instB; tempB; tempB = getParent(tempB)) {
+    depthB++;
+  } // If A is deeper, crawl up.
+
+
+  while (depthA - depthB > 0) {
+    instA = getParent(instA);
+    depthA--;
+  } // If B is deeper, crawl up.
+
+
+  while (depthB - depthA > 0) {
+    instB = getParent(instB);
+    depthB--;
+  } // Walk in lockstep until we find a match.
+
+
+  var depth = depthA;
+
+  while (depth--) {
+    if (instA === instB || instA === instB.alternate) {
+      return instA;
+    }
+
+    instA = getParent(instA);
+    instB = getParent(instB);
+  }
+
+  return null;
+}
+/**
+ * Return if A is an ancestor of B.
+ */
+
+function isAncestor(instA, instB) {
+  while (instB) {
+    if (instA === instB || instA === instB.alternate) {
+      return true;
+    }
+
+    instB = getParent(instB);
+  }
+
+  return false;
+}
+/**
+ * Return the parent instance of the passed-in instance.
+ */
+
+function getParentInstance(inst) {
+  return getParent(inst);
+}
+/**
+ * Simulates the traversal of a two-phase, capture/bubble event dispatch.
+ */
+
+function traverseTwoPhase(inst, fn, arg) {
+  var path = [];
+
+  while (inst) {
+    path.push(inst);
+    inst = getParent(inst);
+  }
+
+  var i;
+
+  for (i = path.length; i-- > 0;) {
+    fn(path[i], 'captured', arg);
+  }
+
+  for (i = 0; i < path.length; i++) {
+    fn(path[i], 'bubbled', arg);
+  }
+}
+
+function isInteractive(tag) {
+  return tag === 'button' || tag === 'input' || tag === 'select' || tag === 'textarea';
+}
+
+function shouldPreventMouseEvent(name, type, props) {
+  switch (name) {
+    case 'onClick':
+    case 'onClickCapture':
+    case 'onDoubleClick':
+    case 'onDoubleClickCapture':
+    case 'onMouseDown':
+    case 'onMouseDownCapture':
+    case 'onMouseMove':
+    case 'onMouseMoveCapture':
+    case 'onMouseUp':
+    case 'onMouseUpCapture':
+    case 'onMouseEnter':
+      return !!(props.disabled && isInteractive(type));
+
+    default:
+      return false;
+  }
+}
+/**
+ * @param {object} inst The instance, which is the source of events.
+ * @param {string} registrationName Name of listener (e.g. `onClick`).
+ * @return {?function} The stored callback.
+ */
+
+
+function getListener(inst, registrationName) {
+  var listener; // TODO: shouldPreventMouseEvent is DOM-specific and definitely should not
+  // live here; needs to be moved to a better place soon
+
+  var stateNode = inst.stateNode;
+
+  if (!stateNode) {
+    // Work in progress (ex: onload events in incremental mode).
+    return null;
+  }
+
+  var props = getFiberCurrentPropsFromNode(stateNode);
+
+  if (!props) {
+    // Work in progress.
+    return null;
+  }
+
+  listener = props[registrationName];
+
+  if (shouldPreventMouseEvent(registrationName, inst.type, props)) {
+    return null;
+  }
+
+  if (!(!listener || typeof listener === 'function')) {
+    {
+      throw Error( "Expected `" + registrationName + "` listener to be a function, instead got a value of `" + typeof listener + "` type." );
+    }
+  }
+
+  return listener;
+}
+
+/**
+ * Accumulates items that must not be null or undefined into the first one. This
+ * is used to conserve memory by avoiding array allocations, and thus sacrifices
+ * API cleanness. Since `current` can be null before being passed in and not
+ * null after this function, make sure to assign it back to `current`:
+ *
+ * `a = accumulateInto(a, b);`
+ *
+ * This API should be sparingly used. Try `accumulate` for something cleaner.
+ *
+ * @return {*|array<*>} An accumulation of items.
+ */
+
+function accumulateInto(current, next) {
+  if (!(next != null)) {
+    {
+      throw Error( "accumulateInto(...): Accumulated items must not be null or undefined." );
+    }
+  }
+
+  if (current == null) {
+    return next;
+  } // Both are not empty. Warning: Never call x.concat(y) when you are not
+  // certain that x is an Array (x could be a string with concat method).
+
+
+  if (Array.isArray(current)) {
+    if (Array.isArray(next)) {
+      current.push.apply(current, next);
+      return current;
+    }
+
+    current.push(next);
+    return current;
+  }
+
+  if (Array.isArray(next)) {
+    // A bit too dangerous to mutate `next`.
+    return [current].concat(next);
+  }
+
+  return [current, next];
+}
+
+/**
+ * @param {array} arr an "accumulation" of items which is either an Array or
+ * a single item. Useful when paired with the `accumulate` module. This is a
+ * simple utility that allows us to reason about a collection of items, but
+ * handling the case when there is exactly one item (and we do not need to
+ * allocate an array).
+ * @param {function} cb Callback invoked with each element or a collection.
+ * @param {?} [scope] Scope used as `this` in a callback.
+ */
+function forEachAccumulated(arr, cb, scope) {
+  if (Array.isArray(arr)) {
+    arr.forEach(cb, scope);
+  } else if (arr) {
+    cb.call(scope, arr);
+  }
+}
+
+/**
+ * Some event types have a notion of different registration names for different
+ * "phases" of propagation. This finds listeners by a given phase.
+ */
+function listenerAtPhase(inst, event, propagationPhase) {
+  var registrationName = event.dispatchConfig.phasedRegistrationNames[propagationPhase];
+  return getListener(inst, registrationName);
+}
+/**
+ * A small set of propagation patterns, each of which will accept a small amount
+ * of information, and generate a set of "dispatch ready event objects" - which
+ * are sets of events that have already been annotated with a set of dispatched
+ * listener functions/ids. The API is designed this way to discourage these
+ * propagation strategies from actually executing the dispatches, since we
+ * always want to collect the entire set of dispatches before executing even a
+ * single one.
+ */
+
+/**
+ * Tags a `SyntheticEvent` with dispatched listeners. Creating this function
+ * here, allows us to not have to bind or create functions for each event.
+ * Mutating the event's members allows us to not have to create a wrapping
+ * "dispatch" object that pairs the event with the listener.
+ */
+
+
+function accumulateDirectionalDispatches(inst, phase, event) {
+  {
+    if (!inst) {
+      error('Dispatching inst must not be null');
+    }
+  }
+
+  var listener = listenerAtPhase(inst, event, phase);
+
+  if (listener) {
+    event._dispatchListeners = accumulateInto(event._dispatchListeners, listener);
+    event._dispatchInstances = accumulateInto(event._dispatchInstances, inst);
+  }
+}
+/**
+ * Collect dispatches (must be entirely collected before dispatching - see unit
+ * tests). Lazily allocate the array to conserve memory.  We must loop through
+ * each event and perform the traversal for each one. We cannot perform a
+ * single traversal for the entire collection of events because each event may
+ * have a different target.
+ */
+
+
+function accumulateTwoPhaseDispatchesSingle(event) {
+  if (event && event.dispatchConfig.phasedRegistrationNames) {
+    traverseTwoPhase(event._targetInst, accumulateDirectionalDispatches, event);
+  }
+}
+/**
+ * Same as `accumulateTwoPhaseDispatchesSingle`, but skips over the targetID.
+ */
+
+
+function accumulateTwoPhaseDispatchesSingleSkipTarget(event) {
+  if (event && event.dispatchConfig.phasedRegistrationNames) {
+    var targetInst = event._targetInst;
+    var parentInst = targetInst ? getParentInstance(targetInst) : null;
+    traverseTwoPhase(parentInst, accumulateDirectionalDispatches, event);
+  }
+}
+/**
+ * Accumulates without regard to direction, does not look for phased
+ * registration names. Same as `accumulateDirectDispatchesSingle` but without
+ * requiring that the `dispatchMarker` be the same as the dispatched ID.
+ */
+
+
+function accumulateDispatches(inst, ignoredDirection, event) {
+  if (inst && event && event.dispatchConfig.registrationName) {
+    var registrationName = event.dispatchConfig.registrationName;
+    var listener = getListener(inst, registrationName);
+
+    if (listener) {
+      event._dispatchListeners = accumulateInto(event._dispatchListeners, listener);
+      event._dispatchInstances = accumulateInto(event._dispatchInstances, inst);
+    }
+  }
+}
+/**
+ * Accumulates dispatches on an `SyntheticEvent`, but only for the
+ * `dispatchMarker`.
+ * @param {SyntheticEvent} event
+ */
+
+
+function accumulateDirectDispatchesSingle(event) {
+  if (event && event.dispatchConfig.registrationName) {
+    accumulateDispatches(event._targetInst, null, event);
+  }
+}
+
+function accumulateTwoPhaseDispatches(events) {
+  forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle);
+}
+function accumulateTwoPhaseDispatchesSkipTarget(events) {
+  forEachAccumulated(events, accumulateTwoPhaseDispatchesSingleSkipTarget);
+}
+function accumulateDirectDispatches(events) {
+  forEachAccumulated(events, accumulateDirectDispatchesSingle);
+}
+
+var EVENT_POOL_SIZE = 10;
+/**
+ * @interface Event
+ * @see http://www.w3.org/TR/DOM-Level-3-Events/
+ */
+
+var EventInterface = {
+  type: null,
+  target: null,
+  // currentTarget is set when dispatching; no use in copying it here
+  currentTarget: function () {
+    return null;
+  },
+  eventPhase: null,
+  bubbles: null,
+  cancelable: null,
+  timeStamp: function (event) {
+    return event.timeStamp || Date.now();
+  },
+  defaultPrevented: null,
+  isTrusted: null
+};
+
+function functionThatReturnsTrue() {
+  return true;
+}
+
+function functionThatReturnsFalse() {
+  return false;
+}
+/**
+ * Synthetic events are dispatched by event plugins, typically in response to a
+ * top-level event delegation handler.
+ *
+ * These systems should generally use pooling to reduce the frequency of garbage
+ * collection. The system should check `isPersistent` to determine whether the
+ * event should be released into the pool after being dispatched. Users that
+ * need a persisted event should invoke `persist`.
+ *
+ * Synthetic events (and subclasses) implement the DOM Level 3 Events API by
+ * normalizing browser quirks. Subclasses do not necessarily have to implement a
+ * DOM interface; custom application-specific events can also subclass this.
+ *
+ * @param {object} dispatchConfig Configuration used to dispatch this event.
+ * @param {*} targetInst Marker identifying the event target.
+ * @param {object} nativeEvent Native browser event.
+ * @param {DOMEventTarget} nativeEventTarget Target node.
+ */
+
+
+function SyntheticEvent(dispatchConfig, targetInst, nativeEvent, nativeEventTarget) {
+  {
+    // these have a getter/setter for warnings
+    delete this.nativeEvent;
+    delete this.preventDefault;
+    delete this.stopPropagation;
+    delete this.isDefaultPrevented;
+    delete this.isPropagationStopped;
+  }
+
+  this.dispatchConfig = dispatchConfig;
+  this._targetInst = targetInst;
+  this.nativeEvent = nativeEvent;
+  var Interface = this.constructor.Interface;
+
+  for (var propName in Interface) {
+    if (!Interface.hasOwnProperty(propName)) {
+      continue;
+    }
+
+    {
+      delete this[propName]; // this has a getter/setter for warnings
+    }
+
+    var normalize = Interface[propName];
+
+    if (normalize) {
+      this[propName] = normalize(nativeEvent);
+    } else {
+      if (propName === 'target') {
+        this.target = nativeEventTarget;
+      } else {
+        this[propName] = nativeEvent[propName];
+      }
+    }
+  }
+
+  var defaultPrevented = nativeEvent.defaultPrevented != null ? nativeEvent.defaultPrevented : nativeEvent.returnValue === false;
+
+  if (defaultPrevented) {
+    this.isDefaultPrevented = functionThatReturnsTrue;
+  } else {
+    this.isDefaultPrevented = functionThatReturnsFalse;
+  }
+
+  this.isPropagationStopped = functionThatReturnsFalse;
+  return this;
+}
+
+_assign(SyntheticEvent.prototype, {
+  preventDefault: function () {
+    this.defaultPrevented = true;
+    var event = this.nativeEvent;
+
+    if (!event) {
+      return;
+    }
+
+    if (event.preventDefault) {
+      event.preventDefault();
+    } else if (typeof event.returnValue !== 'unknown') {
+      event.returnValue = false;
+    }
+
+    this.isDefaultPrevented = functionThatReturnsTrue;
+  },
+  stopPropagation: function () {
+    var event = this.nativeEvent;
+
+    if (!event) {
+      return;
+    }
+
+    if (event.stopPropagation) {
+      event.stopPropagation();
+    } else if (typeof event.cancelBubble !== 'unknown') {
+      // The ChangeEventPlugin registers a "propertychange" event for
+      // IE. This event does not support bubbling or cancelling, and
+      // any references to cancelBubble throw "Member not found".  A
+      // typeof check of "unknown" circumvents this issue (and is also
+      // IE specific).
+      event.cancelBubble = true;
+    }
+
+    this.isPropagationStopped = functionThatReturnsTrue;
+  },
+
+  /**
+   * We release all dispatched `SyntheticEvent`s after each event loop, adding
+   * them back into the pool. This allows a way to hold onto a reference that
+   * won't be added back into the pool.
+   */
+  persist: function () {
+    this.isPersistent = functionThatReturnsTrue;
+  },
+
+  /**
+   * Checks if this event should be released back into the pool.
+   *
+   * @return {boolean} True if this should not be released, false otherwise.
+   */
+  isPersistent: functionThatReturnsFalse,
+
+  /**
+   * `PooledClass` looks for `destructor` on each instance it releases.
+   */
+  destructor: function () {
+    var Interface = this.constructor.Interface;
+
+    for (var propName in Interface) {
+      {
+        Object.defineProperty(this, propName, getPooledWarningPropertyDefinition(propName, Interface[propName]));
+      }
+    }
+
+    this.dispatchConfig = null;
+    this._targetInst = null;
+    this.nativeEvent = null;
+    this.isDefaultPrevented = functionThatReturnsFalse;
+    this.isPropagationStopped = functionThatReturnsFalse;
+    this._dispatchListeners = null;
+    this._dispatchInstances = null;
+
+    {
+      Object.defineProperty(this, 'nativeEvent', getPooledWarningPropertyDefinition('nativeEvent', null));
+      Object.defineProperty(this, 'isDefaultPrevented', getPooledWarningPropertyDefinition('isDefaultPrevented', functionThatReturnsFalse));
+      Object.defineProperty(this, 'isPropagationStopped', getPooledWarningPropertyDefinition('isPropagationStopped', functionThatReturnsFalse));
+      Object.defineProperty(this, 'preventDefault', getPooledWarningPropertyDefinition('preventDefault', function () {}));
+      Object.defineProperty(this, 'stopPropagation', getPooledWarningPropertyDefinition('stopPropagation', function () {}));
+    }
+  }
+});
+
+SyntheticEvent.Interface = EventInterface;
+/**
+ * Helper to reduce boilerplate when creating subclasses.
+ */
+
+SyntheticEvent.extend = function (Interface) {
+  var Super = this;
+
+  var E = function () {};
+
+  E.prototype = Super.prototype;
+  var prototype = new E();
+
+  function Class() {
+    return Super.apply(this, arguments);
+  }
+
+  _assign(prototype, Class.prototype);
+
+  Class.prototype = prototype;
+  Class.prototype.constructor = Class;
+  Class.Interface = _assign({}, Super.Interface, Interface);
+  Class.extend = Super.extend;
+  addEventPoolingTo(Class);
+  return Class;
+};
+
+addEventPoolingTo(SyntheticEvent);
+/**
+ * Helper to nullify syntheticEvent instance properties when destructing
+ *
+ * @param {String} propName
+ * @param {?object} getVal
+ * @return {object} defineProperty object
+ */
+
+function getPooledWarningPropertyDefinition(propName, getVal) {
+  var isFunction = typeof getVal === 'function';
+  return {
+    configurable: true,
+    set: set,
+    get: get
+  };
+
+  function set(val) {
+    var action = isFunction ? 'setting the method' : 'setting the property';
+    warn(action, 'This is effectively a no-op');
+    return val;
+  }
+
+  function get() {
+    var action = isFunction ? 'accessing the method' : 'accessing the property';
+    var result = isFunction ? 'This is a no-op function' : 'This is set to null';
+    warn(action, result);
+    return getVal;
+  }
+
+  function warn(action, result) {
+    {
+      error("This synthetic event is reused for performance reasons. If you're seeing this, " + "you're %s `%s` on a released/nullified synthetic event. %s. " + 'If you must keep the original synthetic event around, use event.persist(). ' + 'See https://fb.me/react-event-pooling for more information.', action, propName, result);
+    }
+  }
+}
+
+function getPooledEvent(dispatchConfig, targetInst, nativeEvent, nativeInst) {
+  var EventConstructor = this;
+
+  if (EventConstructor.eventPool.length) {
+    var instance = EventConstructor.eventPool.pop();
+    EventConstructor.call(instance, dispatchConfig, targetInst, nativeEvent, nativeInst);
+    return instance;
+  }
+
+  return new EventConstructor(dispatchConfig, targetInst, nativeEvent, nativeInst);
+}
+
+function releasePooledEvent(event) {
+  var EventConstructor = this;
+
+  if (!(event instanceof EventConstructor)) {
+    {
+      throw Error( "Trying to release an event instance into a pool of a different type." );
+    }
+  }
+
+  event.destructor();
+
+  if (EventConstructor.eventPool.length < EVENT_POOL_SIZE) {
+    EventConstructor.eventPool.push(event);
+  }
+}
+
+function addEventPoolingTo(EventConstructor) {
+  EventConstructor.eventPool = [];
+  EventConstructor.getPooled = getPooledEvent;
+  EventConstructor.release = releasePooledEvent;
+}
+
+/**
+ * `touchHistory` isn't actually on the native event, but putting it in the
+ * interface will ensure that it is cleaned up when pooled/destroyed. The
+ * `ResponderEventPlugin` will populate it appropriately.
+ */
+
+var ResponderSyntheticEvent = SyntheticEvent.extend({
+  touchHistory: function (nativeEvent) {
+    return null; // Actually doesn't even look at the native event.
+  }
+});
+
+// Note: ideally these would be imported from DOMTopLevelEventTypes,
+// but our build system currently doesn't let us do that from a fork.
+var TOP_TOUCH_START = 'touchstart';
+var TOP_TOUCH_MOVE = 'touchmove';
+var TOP_TOUCH_END = 'touchend';
+var TOP_TOUCH_CANCEL = 'touchcancel';
+var TOP_SCROLL = 'scroll';
+var TOP_SELECTION_CHANGE = 'selectionchange';
+var TOP_MOUSE_DOWN = 'mousedown';
+var TOP_MOUSE_MOVE = 'mousemove';
+var TOP_MOUSE_UP = 'mouseup';
+function isStartish(topLevelType) {
+  return topLevelType === TOP_TOUCH_START || topLevelType === TOP_MOUSE_DOWN;
+}
+function isMoveish(topLevelType) {
+  return topLevelType === TOP_TOUCH_MOVE || topLevelType === TOP_MOUSE_MOVE;
+}
+function isEndish(topLevelType) {
+  return topLevelType === TOP_TOUCH_END || topLevelType === TOP_TOUCH_CANCEL || topLevelType === TOP_MOUSE_UP;
+}
+var startDependencies = [TOP_TOUCH_START, TOP_MOUSE_DOWN];
+var moveDependencies = [TOP_TOUCH_MOVE, TOP_MOUSE_MOVE];
+var endDependencies = [TOP_TOUCH_CANCEL, TOP_TOUCH_END, TOP_MOUSE_UP];
+
+/**
+ * Tracks the position and time of each active touch by `touch.identifier`. We
+ * should typically only see IDs in the range of 1-20 because IDs get recycled
+ * when touches end and start again.
+ */
+
+var MAX_TOUCH_BANK = 20;
+var touchBank = [];
+var touchHistory = {
+  touchBank: touchBank,
+  numberActiveTouches: 0,
+  // If there is only one active touch, we remember its location. This prevents
+  // us having to loop through all of the touches all the time in the most
+  // common case.
+  indexOfSingleActiveTouch: -1,
+  mostRecentTimeStamp: 0
+};
+
+function timestampForTouch(touch) {
+  // The legacy internal implementation provides "timeStamp", which has been
+  // renamed to "timestamp". Let both work for now while we iron it out
+  // TODO (evv): rename timeStamp to timestamp in internal code
+  return touch.timeStamp || touch.timestamp;
+}
+/**
+ * TODO: Instead of making gestures recompute filtered velocity, we could
+ * include a built in velocity computation that can be reused globally.
+ */
+
+
+function createTouchRecord(touch) {
+  return {
+    touchActive: true,
+    startPageX: touch.pageX,
+    startPageY: touch.pageY,
+    startTimeStamp: timestampForTouch(touch),
+    currentPageX: touch.pageX,
+    currentPageY: touch.pageY,
+    currentTimeStamp: timestampForTouch(touch),
+    previousPageX: touch.pageX,
+    previousPageY: touch.pageY,
+    previousTimeStamp: timestampForTouch(touch)
+  };
+}
+
+function resetTouchRecord(touchRecord, touch) {
+  touchRecord.touchActive = true;
+  touchRecord.startPageX = touch.pageX;
+  touchRecord.startPageY = touch.pageY;
+  touchRecord.startTimeStamp = timestampForTouch(touch);
+  touchRecord.currentPageX = touch.pageX;
+  touchRecord.currentPageY = touch.pageY;
+  touchRecord.currentTimeStamp = timestampForTouch(touch);
+  touchRecord.previousPageX = touch.pageX;
+  touchRecord.previousPageY = touch.pageY;
+  touchRecord.previousTimeStamp = timestampForTouch(touch);
+}
+
+function getTouchIdentifier(_ref) {
+  var identifier = _ref.identifier;
+
+  if (!(identifier != null)) {
+    {
+      throw Error( "Touch object is missing identifier." );
+    }
+  }
+
+  {
+    if (identifier > MAX_TOUCH_BANK) {
+      error('Touch identifier %s is greater than maximum supported %s which causes ' + 'performance issues backfilling array locations for all of the indices.', identifier, MAX_TOUCH_BANK);
+    }
+  }
+
+  return identifier;
+}
+
+function recordTouchStart(touch) {
+  var identifier = getTouchIdentifier(touch);
+  var touchRecord = touchBank[identifier];
+
+  if (touchRecord) {
+    resetTouchRecord(touchRecord, touch);
+  } else {
+    touchBank[identifier] = createTouchRecord(touch);
+  }
+
+  touchHistory.mostRecentTimeStamp = timestampForTouch(touch);
+}
+
+function recordTouchMove(touch) {
+  var touchRecord = touchBank[getTouchIdentifier(touch)];
+
+  if (touchRecord) {
+    touchRecord.touchActive = true;
+    touchRecord.previousPageX = touchRecord.currentPageX;
+    touchRecord.previousPageY = touchRecord.currentPageY;
+    touchRecord.previousTimeStamp = touchRecord.currentTimeStamp;
+    touchRecord.currentPageX = touch.pageX;
+    touchRecord.currentPageY = touch.pageY;
+    touchRecord.currentTimeStamp = timestampForTouch(touch);
+    touchHistory.mostRecentTimeStamp = timestampForTouch(touch);
+  } else {
+    {
+      warn('Cannot record touch move without a touch start.\n' + 'Touch Move: %s\n' + 'Touch Bank: %s', printTouch(touch), printTouchBank());
+    }
+  }
+}
+
+function recordTouchEnd(touch) {
+  var touchRecord = touchBank[getTouchIdentifier(touch)];
+
+  if (touchRecord) {
+    touchRecord.touchActive = false;
+    touchRecord.previousPageX = touchRecord.currentPageX;
+    touchRecord.previousPageY = touchRecord.currentPageY;
+    touchRecord.previousTimeStamp = touchRecord.currentTimeStamp;
+    touchRecord.currentPageX = touch.pageX;
+    touchRecord.currentPageY = touch.pageY;
+    touchRecord.currentTimeStamp = timestampForTouch(touch);
+    touchHistory.mostRecentTimeStamp = timestampForTouch(touch);
+  } else {
+    {
+      warn('Cannot record touch end without a touch start.\n' + 'Touch End: %s\n' + 'Touch Bank: %s', printTouch(touch), printTouchBank());
+    }
+  }
+}
+
+function printTouch(touch) {
+  return JSON.stringify({
+    identifier: touch.identifier,
+    pageX: touch.pageX,
+    pageY: touch.pageY,
+    timestamp: timestampForTouch(touch)
+  });
+}
+
+function printTouchBank() {
+  var printed = JSON.stringify(touchBank.slice(0, MAX_TOUCH_BANK));
+
+  if (touchBank.length > MAX_TOUCH_BANK) {
+    printed += ' (original size: ' + touchBank.length + ')';
+  }
+
+  return printed;
+}
+
+var ResponderTouchHistoryStore = {
+  recordTouchTrack: function (topLevelType, nativeEvent) {
+    if (isMoveish(topLevelType)) {
+      nativeEvent.changedTouches.forEach(recordTouchMove);
+    } else if (isStartish(topLevelType)) {
+      nativeEvent.changedTouches.forEach(recordTouchStart);
+      touchHistory.numberActiveTouches = nativeEvent.touches.length;
+
+      if (touchHistory.numberActiveTouches === 1) {
+        touchHistory.indexOfSingleActiveTouch = nativeEvent.touches[0].identifier;
+      }
+    } else if (isEndish(topLevelType)) {
+      nativeEvent.changedTouches.forEach(recordTouchEnd);
+      touchHistory.numberActiveTouches = nativeEvent.touches.length;
+
+      if (touchHistory.numberActiveTouches === 1) {
+        for (var i = 0; i < touchBank.length; i++) {
+          var touchTrackToCheck = touchBank[i];
+
+          if (touchTrackToCheck != null && touchTrackToCheck.touchActive) {
+            touchHistory.indexOfSingleActiveTouch = i;
+            break;
+          }
+        }
+
+        {
+          var activeRecord = touchBank[touchHistory.indexOfSingleActiveTouch];
+
+          if (activeRecord == null || !activeRecord.touchActive) {
+            error('Cannot find single active touch.');
+          }
+        }
+      }
+    }
+  },
+  touchHistory: touchHistory
+};
+
+/**
+ * Accumulates items that must not be null or undefined.
+ *
+ * This is used to conserve memory by avoiding array allocations.
+ *
+ * @return {*|array<*>} An accumulation of items.
+ */
+
+function accumulate(current, next) {
+  if (!(next != null)) {
+    {
+      throw Error( "accumulate(...): Accumulated items must not be null or undefined." );
+    }
+  }
+
+  if (current == null) {
+    return next;
+  } // Both are not empty. Warning: Never call x.concat(y) when you are not
+  // certain that x is an Array (x could be a string with concat method).
+
+
+  if (Array.isArray(current)) {
+    return current.concat(next);
+  }
+
+  if (Array.isArray(next)) {
+    return [current].concat(next);
+  }
+
+  return [current, next];
+}
+
+/**
+ * Instance of element that should respond to touch/move types of interactions,
+ * as indicated explicitly by relevant callbacks.
+ */
+
+var responderInst = null;
+/**
+ * Count of current touches. A textInput should become responder iff the
+ * selection changes while there is a touch on the screen.
+ */
+
+var trackedTouchCount = 0;
+
+var changeResponder = function (nextResponderInst, blockHostResponder) {
+  var oldResponderInst = responderInst;
+  responderInst = nextResponderInst;
+
+  if (ResponderEventPlugin.GlobalResponderHandler !== null) {
+    ResponderEventPlugin.GlobalResponderHandler.onChange(oldResponderInst, nextResponderInst, blockHostResponder);
+  }
+};
+
+var eventTypes = {
+  /**
+   * On a `touchStart`/`mouseDown`, is it desired that this element become the
+   * responder?
+   */
+  startShouldSetResponder: {
+    phasedRegistrationNames: {
+      bubbled: 'onStartShouldSetResponder',
+      captured: 'onStartShouldSetResponderCapture'
+    },
+    dependencies: startDependencies
+  },
+
+  /**
+   * On a `scroll`, is it desired that this element become the responder? This
+   * is usually not needed, but should be used to retroactively infer that a
+   * `touchStart` had occurred during momentum scroll. During a momentum scroll,
+   * a touch start will be immediately followed by a scroll event if the view is
+   * currently scrolling.
+   *
+   * TODO: This shouldn't bubble.
+   */
+  scrollShouldSetResponder: {
+    phasedRegistrationNames: {
+      bubbled: 'onScrollShouldSetResponder',
+      captured: 'onScrollShouldSetResponderCapture'
+    },
+    dependencies: [TOP_SCROLL]
+  },
+
+  /**
+   * On text selection change, should this element become the responder? This
+   * is needed for text inputs or other views with native selection, so the
+   * JS view can claim the responder.
+   *
+   * TODO: This shouldn't bubble.
+   */
+  selectionChangeShouldSetResponder: {
+    phasedRegistrationNames: {
+      bubbled: 'onSelectionChangeShouldSetResponder',
+      captured: 'onSelectionChangeShouldSetResponderCapture'
+    },
+    dependencies: [TOP_SELECTION_CHANGE]
+  },
+
+  /**
+   * On a `touchMove`/`mouseMove`, is it desired that this element become the
+   * responder?
+   */
+  moveShouldSetResponder: {
+    phasedRegistrationNames: {
+      bubbled: 'onMoveShouldSetResponder',
+      captured: 'onMoveShouldSetResponderCapture'
+    },
+    dependencies: moveDependencies
+  },
+
+  /**
+   * Direct responder events dispatched directly to responder. Do not bubble.
+   */
+  responderStart: {
+    registrationName: 'onResponderStart',
+    dependencies: startDependencies
+  },
+  responderMove: {
+    registrationName: 'onResponderMove',
+    dependencies: moveDependencies
+  },
+  responderEnd: {
+    registrationName: 'onResponderEnd',
+    dependencies: endDependencies
+  },
+  responderRelease: {
+    registrationName: 'onResponderRelease',
+    dependencies: endDependencies
+  },
+  responderTerminationRequest: {
+    registrationName: 'onResponderTerminationRequest',
+    dependencies: []
+  },
+  responderGrant: {
+    registrationName: 'onResponderGrant',
+    dependencies: []
+  },
+  responderReject: {
+    registrationName: 'onResponderReject',
+    dependencies: []
+  },
+  responderTerminate: {
+    registrationName: 'onResponderTerminate',
+    dependencies: []
+  }
+};
+/**
+ *
+ * Responder System:
+ * ----------------
+ *
+ * - A global, solitary "interaction lock" on a view.
+ * - If a node becomes the responder, it should convey visual feedback
+ *   immediately to indicate so, either by highlighting or moving accordingly.
+ * - To be the responder means, that touches are exclusively important to that
+ *   responder view, and no other view.
+ * - While touches are still occurring, the responder lock can be transferred to
+ *   a new view, but only to increasingly "higher" views (meaning ancestors of
+ *   the current responder).
+ *
+ * Responder being granted:
+ * ------------------------
+ *
+ * - Touch starts, moves, and scrolls can cause an ID to become the responder.
+ * - We capture/bubble `startShouldSetResponder`/`moveShouldSetResponder` to
+ *   the "appropriate place".
+ * - If nothing is currently the responder, the "appropriate place" is the
+ *   initiating event's `targetID`.
+ * - If something *is* already the responder, the "appropriate place" is the
+ *   first common ancestor of the event target and the current `responderInst`.
+ * - Some negotiation happens: See the timing diagram below.
+ * - Scrolled views automatically become responder. The reasoning is that a
+ *   platform scroll view that isn't built on top of the responder system has
+ *   began scrolling, and the active responder must now be notified that the
+ *   interaction is no longer locked to it - the system has taken over.
+ *
+ * - Responder being released:
+ *   As soon as no more touches that *started* inside of descendants of the
+ *   *current* responderInst, an `onResponderRelease` event is dispatched to the
+ *   current responder, and the responder lock is released.
+ *
+ * TODO:
+ * - on "end", a callback hook for `onResponderEndShouldRemainResponder` that
+ *   determines if the responder lock should remain.
+ * - If a view shouldn't "remain" the responder, any active touches should by
+ *   default be considered "dead" and do not influence future negotiations or
+ *   bubble paths. It should be as if those touches do not exist.
+ * -- For multitouch: Usually a translate-z will choose to "remain" responder
+ *  after one out of many touches ended. For translate-y, usually the view
+ *  doesn't wish to "remain" responder after one of many touches end.
+ * - Consider building this on top of a `stopPropagation` model similar to
+ *   `W3C` events.
+ * - Ensure that `onResponderTerminate` is called on touch cancels, whether or
+ *   not `onResponderTerminationRequest` returns `true` or `false`.
+ *
+ */
+
+/*                                             Negotiation Performed
+                                             +-----------------------+
+                                            /                         \
+Process low level events to    +     Current Responder      +   wantsResponderID
+determine who to perform negot-|   (if any exists at all)   |
+iation/transition              | Otherwise just pass through|
+-------------------------------+----------------------------+------------------+
+Bubble to find first ID        |                            |
+to return true:wantsResponderID|                            |
+                               |                            |
+     +-------------+           |                            |
+     | onTouchStart|           |                            |
+     +------+------+     none  |                            |
+            |            return|                            |
++-----------v-------------+true| +------------------------+ |
+|onStartShouldSetResponder|----->|onResponderStart (cur)  |<-----------+
++-----------+-------------+    | +------------------------+ |          |
+            |                  |                            | +--------+-------+
+            | returned true for|       false:REJECT +-------->|onResponderReject
+            | wantsResponderID |                    |       | +----------------+
+            | (now attempt     | +------------------+-----+ |
+            |  handoff)        | |   onResponder          | |
+            +------------------->|      TerminationRequest| |
+                               | +------------------+-----+ |
+                               |                    |       | +----------------+
+                               |         true:GRANT +-------->|onResponderGrant|
+                               |                            | +--------+-------+
+                               | +------------------------+ |          |
+                               | |   onResponderTerminate |<-----------+
+                               | +------------------+-----+ |
+                               |                    |       | +----------------+
+                               |                    +-------->|onResponderStart|
+                               |                            | +----------------+
+Bubble to find first ID        |                            |
+to return true:wantsResponderID|                            |
+                               |                            |
+     +-------------+           |                            |
+     | onTouchMove |           |                            |
+     +------+------+     none  |                            |
+            |            return|                            |
++-----------v-------------+true| +------------------------+ |
+|onMoveShouldSetResponder |----->|onResponderMove (cur)   |<-----------+
++-----------+-------------+    | +------------------------+ |          |
+            |                  |                            | +--------+-------+
+            | returned true for|       false:REJECT +-------->|onResponderRejec|
+            | wantsResponderID |                    |       | +----------------+
+            | (now attempt     | +------------------+-----+ |
+            |  handoff)        | |   onResponder          | |
+            +------------------->|      TerminationRequest| |
+                               | +------------------+-----+ |
+                               |                    |       | +----------------+
+                               |         true:GRANT +-------->|onResponderGrant|
+                               |                            | +--------+-------+
+                               | +------------------------+ |          |
+                               | |   onResponderTerminate |<-----------+
+                               | +------------------+-----+ |
+                               |                    |       | +----------------+
+                               |                    +-------->|onResponderMove |
+                               |                            | +----------------+
+                               |                            |
+                               |                            |
+      Some active touch started|                            |
+      inside current responder | +------------------------+ |
+      +------------------------->|      onResponderEnd    | |
+      |                        | +------------------------+ |
+  +---+---------+              |                            |
+  | onTouchEnd  |              |                            |
+  +---+---------+              |                            |
+      |                        | +------------------------+ |
+      +------------------------->|     onResponderEnd     | |
+      No active touches started| +-----------+------------+ |
+      inside current responder |             |              |
+                               |             v              |
+                               | +------------------------+ |
+                               | |    onResponderRelease  | |
+                               | +------------------------+ |
+                               |                            |
+                               +                            + */
+
+/**
+ * A note about event ordering in the `EventPluginRegistry`.
+ *
+ * Suppose plugins are injected in the following order:
+ *
+ * `[R, S, C]`
+ *
+ * To help illustrate the example, assume `S` is `SimpleEventPlugin` (for
+ * `onClick` etc) and `R` is `ResponderEventPlugin`.
+ *
+ * "Deferred-Dispatched Events":
+ *
+ * - The current event plugin system will traverse the list of injected plugins,
+ *   in order, and extract events by collecting the plugin's return value of
+ *   `extractEvents()`.
+ * - These events that are returned from `extractEvents` are "deferred
+ *   dispatched events".
+ * - When returned from `extractEvents`, deferred-dispatched events contain an
+ *   "accumulation" of deferred dispatches.
+ * - These deferred dispatches are accumulated/collected before they are
+ *   returned, but processed at a later time by the `EventPluginRegistry` (hence the
+ *   name deferred).
+ *
+ * In the process of returning their deferred-dispatched events, event plugins
+ * themselves can dispatch events on-demand without returning them from
+ * `extractEvents`. Plugins might want to do this, so that they can use event
+ * dispatching as a tool that helps them decide which events should be extracted
+ * in the first place.
+ *
+ * "On-Demand-Dispatched Events":
+ *
+ * - On-demand-dispatched events are not returned from `extractEvents`.
+ * - On-demand-dispatched events are dispatched during the process of returning
+ *   the deferred-dispatched events.
+ * - They should not have side effects.
+ * - They should be avoided, and/or eventually be replaced with another
+ *   abstraction that allows event plugins to perform multiple "rounds" of event
+ *   extraction.
+ *
+ * Therefore, the sequence of event dispatches becomes:
+ *
+ * - `R`s on-demand events (if any)   (dispatched by `R` on-demand)
+ * - `S`s on-demand events (if any)   (dispatched by `S` on-demand)
+ * - `C`s on-demand events (if any)   (dispatched by `C` on-demand)
+ * - `R`s extracted events (if any)   (dispatched by `EventPluginRegistry`)
+ * - `S`s extracted events (if any)   (dispatched by `EventPluginRegistry`)
+ * - `C`s extracted events (if any)   (dispatched by `EventPluginRegistry`)
+ *
+ * In the case of `ResponderEventPlugin`: If the `startShouldSetResponder`
+ * on-demand dispatch returns `true` (and some other details are satisfied) the
+ * `onResponderGrant` deferred dispatched event is returned from
+ * `extractEvents`. The sequence of dispatch executions in this case
+ * will appear as follows:
+ *
+ * - `startShouldSetResponder` (`ResponderEventPlugin` dispatches on-demand)
+ * - `touchStartCapture`       (`EventPluginRegistry` dispatches as usual)
+ * - `touchStart`              (`EventPluginRegistry` dispatches as usual)
+ * - `responderGrant/Reject`   (`EventPluginRegistry` dispatches as usual)
+ */
+
+function setResponderAndExtractTransfer(topLevelType, targetInst, nativeEvent, nativeEventTarget) {
+  var shouldSetEventType = isStartish(topLevelType) ? eventTypes.startShouldSetResponder : isMoveish(topLevelType) ? eventTypes.moveShouldSetResponder : topLevelType === TOP_SELECTION_CHANGE ? eventTypes.selectionChangeShouldSetResponder : eventTypes.scrollShouldSetResponder; // TODO: stop one short of the current responder.
+
+  var bubbleShouldSetFrom = !responderInst ? targetInst : getLowestCommonAncestor(responderInst, targetInst); // When capturing/bubbling the "shouldSet" event, we want to skip the target
+  // (deepest ID) if it happens to be the current responder. The reasoning:
+  // It's strange to get an `onMoveShouldSetResponder` when you're *already*
+  // the responder.
+
+  var skipOverBubbleShouldSetFrom = bubbleShouldSetFrom === responderInst;
+  var shouldSetEvent = ResponderSyntheticEvent.getPooled(shouldSetEventType, bubbleShouldSetFrom, nativeEvent, nativeEventTarget);
+  shouldSetEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
+
+  if (skipOverBubbleShouldSetFrom) {
+    accumulateTwoPhaseDispatchesSkipTarget(shouldSetEvent);
+  } else {
+    accumulateTwoPhaseDispatches(shouldSetEvent);
+  }
+
+  var wantsResponderInst = executeDispatchesInOrderStopAtTrue(shouldSetEvent);
+
+  if (!shouldSetEvent.isPersistent()) {
+    shouldSetEvent.constructor.release(shouldSetEvent);
+  }
+
+  if (!wantsResponderInst || wantsResponderInst === responderInst) {
+    return null;
+  }
+
+  var extracted;
+  var grantEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderGrant, wantsResponderInst, nativeEvent, nativeEventTarget);
+  grantEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
+  accumulateDirectDispatches(grantEvent);
+  var blockHostResponder = executeDirectDispatch(grantEvent) === true;
+
+  if (responderInst) {
+    var terminationRequestEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderTerminationRequest, responderInst, nativeEvent, nativeEventTarget);
+    terminationRequestEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
+    accumulateDirectDispatches(terminationRequestEvent);
+    var shouldSwitch = !hasDispatches(terminationRequestEvent) || executeDirectDispatch(terminationRequestEvent);
+
+    if (!terminationRequestEvent.isPersistent()) {
+      terminationRequestEvent.constructor.release(terminationRequestEvent);
+    }
+
+    if (shouldSwitch) {
+      var terminateEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderTerminate, responderInst, nativeEvent, nativeEventTarget);
+      terminateEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
+      accumulateDirectDispatches(terminateEvent);
+      extracted = accumulate(extracted, [grantEvent, terminateEvent]);
+      changeResponder(wantsResponderInst, blockHostResponder);
+    } else {
+      var rejectEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderReject, wantsResponderInst, nativeEvent, nativeEventTarget);
+      rejectEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
+      accumulateDirectDispatches(rejectEvent);
+      extracted = accumulate(extracted, rejectEvent);
+    }
+  } else {
+    extracted = accumulate(extracted, grantEvent);
+    changeResponder(wantsResponderInst, blockHostResponder);
+  }
+
+  return extracted;
+}
+/**
+ * A transfer is a negotiation between a currently set responder and the next
+ * element to claim responder status. Any start event could trigger a transfer
+ * of responderInst. Any move event could trigger a transfer.
+ *
+ * @param {string} topLevelType Record from `BrowserEventConstants`.
+ * @return {boolean} True if a transfer of responder could possibly occur.
+ */
+
+
+function canTriggerTransfer(topLevelType, topLevelInst, nativeEvent) {
+  return topLevelInst && ( // responderIgnoreScroll: We are trying to migrate away from specifically
+  // tracking native scroll events here and responderIgnoreScroll indicates we
+  // will send topTouchCancel to handle canceling touch events instead
+  topLevelType === TOP_SCROLL && !nativeEvent.responderIgnoreScroll || trackedTouchCount > 0 && topLevelType === TOP_SELECTION_CHANGE || isStartish(topLevelType) || isMoveish(topLevelType));
+}
+/**
+ * Returns whether or not this touch end event makes it such that there are no
+ * longer any touches that started inside of the current `responderInst`.
+ *
+ * @param {NativeEvent} nativeEvent Native touch end event.
+ * @return {boolean} Whether or not this touch end event ends the responder.
+ */
+
+
+function noResponderTouches(nativeEvent) {
+  var touches = nativeEvent.touches;
+
+  if (!touches || touches.length === 0) {
+    return true;
+  }
+
+  for (var i = 0; i < touches.length; i++) {
+    var activeTouch = touches[i];
+    var target = activeTouch.target;
+
+    if (target !== null && target !== undefined && target !== 0) {
+      // Is the original touch location inside of the current responder?
+      var targetInst = getInstanceFromNode(target);
+
+      if (isAncestor(responderInst, targetInst)) {
+        return false;
+      }
+    }
+  }
+
+  return true;
+}
+
+var ResponderEventPlugin = {
+  /* For unit testing only */
+  _getResponder: function () {
+    return responderInst;
+  },
+  eventTypes: eventTypes,
+
+  /**
+   * We must be resilient to `targetInst` being `null` on `touchMove` or
+   * `touchEnd`. On certain platforms, this means that a native scroll has
+   * assumed control and the original touch targets are destroyed.
+   */
+  extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) {
+    if (isStartish(topLevelType)) {
+      trackedTouchCount += 1;
+    } else if (isEndish(topLevelType)) {
+      if (trackedTouchCount >= 0) {
+        trackedTouchCount -= 1;
+      } else {
+        {
+          warn('Ended a touch event which was not counted in `trackedTouchCount`.');
+        }
+
+        return null;
+      }
+    }
+
+    ResponderTouchHistoryStore.recordTouchTrack(topLevelType, nativeEvent);
+    var extracted = canTriggerTransfer(topLevelType, targetInst, nativeEvent) ? setResponderAndExtractTransfer(topLevelType, targetInst, nativeEvent, nativeEventTarget) : null; // Responder may or may not have transferred on a new touch start/move.
+    // Regardless, whoever is the responder after any potential transfer, we
+    // direct all touch start/move/ends to them in the form of
+    // `onResponderMove/Start/End`. These will be called for *every* additional
+    // finger that move/start/end, dispatched directly to whoever is the
+    // current responder at that moment, until the responder is "released".
+    //
+    // These multiple individual change touch events are are always bookended
+    // by `onResponderGrant`, and one of
+    // (`onResponderRelease/onResponderTerminate`).
+
+    var isResponderTouchStart = responderInst && isStartish(topLevelType);
+    var isResponderTouchMove = responderInst && isMoveish(topLevelType);
+    var isResponderTouchEnd = responderInst && isEndish(topLevelType);
+    var incrementalTouch = isResponderTouchStart ? eventTypes.responderStart : isResponderTouchMove ? eventTypes.responderMove : isResponderTouchEnd ? eventTypes.responderEnd : null;
+
+    if (incrementalTouch) {
+      var gesture = ResponderSyntheticEvent.getPooled(incrementalTouch, responderInst, nativeEvent, nativeEventTarget);
+      gesture.touchHistory = ResponderTouchHistoryStore.touchHistory;
+      accumulateDirectDispatches(gesture);
+      extracted = accumulate(extracted, gesture);
+    }
+
+    var isResponderTerminate = responderInst && topLevelType === TOP_TOUCH_CANCEL;
+    var isResponderRelease = responderInst && !isResponderTerminate && isEndish(topLevelType) && noResponderTouches(nativeEvent);
+    var finalTouch = isResponderTerminate ? eventTypes.responderTerminate : isResponderRelease ? eventTypes.responderRelease : null;
+
+    if (finalTouch) {
+      var finalEvent = ResponderSyntheticEvent.getPooled(finalTouch, responderInst, nativeEvent, nativeEventTarget);
+      finalEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
+      accumulateDirectDispatches(finalEvent);
+      extracted = accumulate(extracted, finalEvent);
+      changeResponder(null);
+    }
+
+    return extracted;
+  },
+  GlobalResponderHandler: null,
+  injection: {
+    /**
+     * @param {{onChange: (ReactID, ReactID) => void} GlobalResponderHandler
+     * Object that handles any change in responder. Use this to inject
+     * integration with an existing touch handling system etc.
+     */
+    injectGlobalResponderHandler: function (GlobalResponderHandler) {
+      ResponderEventPlugin.GlobalResponderHandler = GlobalResponderHandler;
+    }
+  }
+};
+
+// Keep in sync with ReactDOM.js, ReactTestUtils.js, and ReactTestUtilsAct.js:
+
+var _ReactDOM$__SECRET_IN = ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Events,
+    getInstanceFromNode$1 = _ReactDOM$__SECRET_IN[0],
+    getNodeFromInstance$1 = _ReactDOM$__SECRET_IN[1],
+    getFiberCurrentPropsFromNode$1 = _ReactDOM$__SECRET_IN[2],
+    injectEventPluginsByName = _ReactDOM$__SECRET_IN[3];
+setComponentTree(getFiberCurrentPropsFromNode$1, getInstanceFromNode$1, getNodeFromInstance$1);
+
+var ReactDOMUnstableNativeDependencies = /*#__PURE__*/Object.freeze({
+  __proto__: null,
+  ResponderEventPlugin: ResponderEventPlugin,
+  ResponderTouchHistoryStore: ResponderTouchHistoryStore,
+  injectEventPluginsByName: injectEventPluginsByName
+});
+
+var unstableNativeDependencies = ReactDOMUnstableNativeDependencies;
+
+module.exports = unstableNativeDependencies;
+  })();
+}
diff --git a/igv_component/node_modules/react-dom/cjs/react-dom-unstable-native-dependencies.production.min.js b/igv_component/node_modules/react-dom/cjs/react-dom-unstable-native-dependencies.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..1dc56793f3e238a4f31bd4079a74cd80e51d41d3
--- /dev/null
+++ b/igv_component/node_modules/react-dom/cjs/react-dom-unstable-native-dependencies.production.min.js
@@ -0,0 +1,31 @@
+/** @license React v16.13.1
+ * react-dom-unstable-native-dependencies.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';var h=require("react-dom"),k=require("object-assign");function m(a){for(var b="https://reactjs.org/docs/error-decoder.html?invariant="+a,c=1;c<arguments.length;c++)b+="&args[]="+encodeURIComponent(arguments[c]);return"Minified React error #"+a+"; visit "+b+" for the full message or use the non-minified dev environment for full errors and additional helpful warnings."}var n=null,q=null,r=null;
+function t(a){var b=a._dispatchListeners,c=a._dispatchInstances;if(Array.isArray(b))throw Error(m(103));a.currentTarget=b?r(c):null;b=b?b(a):null;a.currentTarget=null;a._dispatchListeners=null;a._dispatchInstances=null;return b}function u(a){do a=a.return;while(a&&5!==a.tag);return a?a:null}function v(a,b,c){for(var f=[];a;)f.push(a),a=u(a);for(a=f.length;0<a--;)b(f[a],"captured",c);for(a=0;a<f.length;a++)b(f[a],"bubbled",c)}
+function w(a,b){var c=a.stateNode;if(!c)return null;var f=n(c);if(!f)return null;c=f[b];a:switch(b){case "onClick":case "onClickCapture":case "onDoubleClick":case "onDoubleClickCapture":case "onMouseDown":case "onMouseDownCapture":case "onMouseMove":case "onMouseMoveCapture":case "onMouseUp":case "onMouseUpCapture":case "onMouseEnter":(f=!f.disabled)||(a=a.type,f=!("button"===a||"input"===a||"select"===a||"textarea"===a));a=!f;break a;default:a=!1}if(a)return null;if(c&&"function"!==typeof c)throw Error(m(231,
+b,typeof c));return c}function x(a,b){if(null==b)throw Error(m(30));if(null==a)return b;if(Array.isArray(a)){if(Array.isArray(b))return a.push.apply(a,b),a;a.push(b);return a}return Array.isArray(b)?[a].concat(b):[a,b]}function y(a,b,c){Array.isArray(a)?a.forEach(b,c):a&&b.call(c,a)}function z(a,b,c){if(b=w(a,c.dispatchConfig.phasedRegistrationNames[b]))c._dispatchListeners=x(c._dispatchListeners,b),c._dispatchInstances=x(c._dispatchInstances,a)}
+function A(a){a&&a.dispatchConfig.phasedRegistrationNames&&v(a._targetInst,z,a)}function aa(a){if(a&&a.dispatchConfig.phasedRegistrationNames){var b=a._targetInst;b=b?u(b):null;v(b,z,a)}}function B(a){if(a&&a.dispatchConfig.registrationName){var b=a._targetInst;if(b&&a&&a.dispatchConfig.registrationName){var c=w(b,a.dispatchConfig.registrationName);c&&(a._dispatchListeners=x(a._dispatchListeners,c),a._dispatchInstances=x(a._dispatchInstances,b))}}}function C(){return!0}function D(){return!1}
+function E(a,b,c,f){this.dispatchConfig=a;this._targetInst=b;this.nativeEvent=c;a=this.constructor.Interface;for(var d in a)a.hasOwnProperty(d)&&((b=a[d])?this[d]=b(c):"target"===d?this.target=f:this[d]=c[d]);this.isDefaultPrevented=(null!=c.defaultPrevented?c.defaultPrevented:!1===c.returnValue)?C:D;this.isPropagationStopped=D;return this}
+k(E.prototype,{preventDefault:function(){this.defaultPrevented=!0;var a=this.nativeEvent;a&&(a.preventDefault?a.preventDefault():"unknown"!==typeof a.returnValue&&(a.returnValue=!1),this.isDefaultPrevented=C)},stopPropagation:function(){var a=this.nativeEvent;a&&(a.stopPropagation?a.stopPropagation():"unknown"!==typeof a.cancelBubble&&(a.cancelBubble=!0),this.isPropagationStopped=C)},persist:function(){this.isPersistent=C},isPersistent:D,destructor:function(){var a=this.constructor.Interface,b;for(b in a)this[b]=
+null;this.nativeEvent=this._targetInst=this.dispatchConfig=null;this.isPropagationStopped=this.isDefaultPrevented=D;this._dispatchInstances=this._dispatchListeners=null}});E.Interface={type:null,target:null,currentTarget:function(){return null},eventPhase:null,bubbles:null,cancelable:null,timeStamp:function(a){return a.timeStamp||Date.now()},defaultPrevented:null,isTrusted:null};
+E.extend=function(a){function b(){}function c(){return f.apply(this,arguments)}var f=this;b.prototype=f.prototype;var d=new b;k(d,c.prototype);c.prototype=d;c.prototype.constructor=c;c.Interface=k({},f.Interface,a);c.extend=f.extend;F(c);return c};F(E);function ba(a,b,c,f){if(this.eventPool.length){var d=this.eventPool.pop();this.call(d,a,b,c,f);return d}return new this(a,b,c,f)}
+function ca(a){if(!(a instanceof this))throw Error(m(279));a.destructor();10>this.eventPool.length&&this.eventPool.push(a)}function F(a){a.eventPool=[];a.getPooled=ba;a.release=ca}var G=E.extend({touchHistory:function(){return null}});function H(a){return"touchstart"===a||"mousedown"===a}function I(a){return"touchmove"===a||"mousemove"===a}function J(a){return"touchend"===a||"touchcancel"===a||"mouseup"===a}
+var K=["touchstart","mousedown"],L=["touchmove","mousemove"],N=["touchcancel","touchend","mouseup"],O=[],P={touchBank:O,numberActiveTouches:0,indexOfSingleActiveTouch:-1,mostRecentTimeStamp:0};function Q(a){return a.timeStamp||a.timestamp}function R(a){a=a.identifier;if(null==a)throw Error(m(138));return a}
+function da(a){var b=R(a),c=O[b];c?(c.touchActive=!0,c.startPageX=a.pageX,c.startPageY=a.pageY,c.startTimeStamp=Q(a),c.currentPageX=a.pageX,c.currentPageY=a.pageY,c.currentTimeStamp=Q(a),c.previousPageX=a.pageX,c.previousPageY=a.pageY,c.previousTimeStamp=Q(a)):(c={touchActive:!0,startPageX:a.pageX,startPageY:a.pageY,startTimeStamp:Q(a),currentPageX:a.pageX,currentPageY:a.pageY,currentTimeStamp:Q(a),previousPageX:a.pageX,previousPageY:a.pageY,previousTimeStamp:Q(a)},O[b]=c);P.mostRecentTimeStamp=Q(a)}
+function ea(a){var b=O[R(a)];b&&(b.touchActive=!0,b.previousPageX=b.currentPageX,b.previousPageY=b.currentPageY,b.previousTimeStamp=b.currentTimeStamp,b.currentPageX=a.pageX,b.currentPageY=a.pageY,b.currentTimeStamp=Q(a),P.mostRecentTimeStamp=Q(a))}function fa(a){var b=O[R(a)];b&&(b.touchActive=!1,b.previousPageX=b.currentPageX,b.previousPageY=b.currentPageY,b.previousTimeStamp=b.currentTimeStamp,b.currentPageX=a.pageX,b.currentPageY=a.pageY,b.currentTimeStamp=Q(a),P.mostRecentTimeStamp=Q(a))}
+var S={recordTouchTrack:function(a,b){if(I(a))b.changedTouches.forEach(ea);else if(H(a))b.changedTouches.forEach(da),P.numberActiveTouches=b.touches.length,1===P.numberActiveTouches&&(P.indexOfSingleActiveTouch=b.touches[0].identifier);else if(J(a)&&(b.changedTouches.forEach(fa),P.numberActiveTouches=b.touches.length,1===P.numberActiveTouches))for(a=0;a<O.length;a++)if(b=O[a],null!=b&&b.touchActive){P.indexOfSingleActiveTouch=a;break}},touchHistory:P};
+function T(a,b){if(null==b)throw Error(m(334));return null==a?b:Array.isArray(a)?a.concat(b):Array.isArray(b)?[a].concat(b):[a,b]}var U=null,V=0;function W(a,b){var c=U;U=a;if(null!==X.GlobalResponderHandler)X.GlobalResponderHandler.onChange(c,a,b)}
+var Y={startShouldSetResponder:{phasedRegistrationNames:{bubbled:"onStartShouldSetResponder",captured:"onStartShouldSetResponderCapture"},dependencies:K},scrollShouldSetResponder:{phasedRegistrationNames:{bubbled:"onScrollShouldSetResponder",captured:"onScrollShouldSetResponderCapture"},dependencies:["scroll"]},selectionChangeShouldSetResponder:{phasedRegistrationNames:{bubbled:"onSelectionChangeShouldSetResponder",captured:"onSelectionChangeShouldSetResponderCapture"},dependencies:["selectionchange"]},
+moveShouldSetResponder:{phasedRegistrationNames:{bubbled:"onMoveShouldSetResponder",captured:"onMoveShouldSetResponderCapture"},dependencies:L},responderStart:{registrationName:"onResponderStart",dependencies:K},responderMove:{registrationName:"onResponderMove",dependencies:L},responderEnd:{registrationName:"onResponderEnd",dependencies:N},responderRelease:{registrationName:"onResponderRelease",dependencies:N},responderTerminationRequest:{registrationName:"onResponderTerminationRequest",dependencies:[]},
+responderGrant:{registrationName:"onResponderGrant",dependencies:[]},responderReject:{registrationName:"onResponderReject",dependencies:[]},responderTerminate:{registrationName:"onResponderTerminate",dependencies:[]}},X={_getResponder:function(){return U},eventTypes:Y,extractEvents:function(a,b,c,f){if(H(a))V+=1;else if(J(a))if(0<=V)--V;else return null;S.recordTouchTrack(a,c);if(b&&("scroll"===a&&!c.responderIgnoreScroll||0<V&&"selectionchange"===a||H(a)||I(a))){var d=H(a)?Y.startShouldSetResponder:
+I(a)?Y.moveShouldSetResponder:"selectionchange"===a?Y.selectionChangeShouldSetResponder:Y.scrollShouldSetResponder;if(U)b:{var e=U;for(var g=0,p=e;p;p=u(p))g++;p=0;for(var M=b;M;M=u(M))p++;for(;0<g-p;)e=u(e),g--;for(;0<p-g;)b=u(b),p--;for(;g--;){if(e===b||e===b.alternate)break b;e=u(e);b=u(b)}e=null}else e=b;b=e===U;e=G.getPooled(d,e,c,f);e.touchHistory=S.touchHistory;b?y(e,aa):y(e,A);b:{d=e._dispatchListeners;b=e._dispatchInstances;if(Array.isArray(d))for(g=0;g<d.length&&!e.isPropagationStopped();g++){if(d[g](e,
+b[g])){d=b[g];break b}}else if(d&&d(e,b)){d=b;break b}d=null}e._dispatchInstances=null;e._dispatchListeners=null;e.isPersistent()||e.constructor.release(e);if(d&&d!==U)if(e=G.getPooled(Y.responderGrant,d,c,f),e.touchHistory=S.touchHistory,y(e,B),b=!0===t(e),U)if(g=G.getPooled(Y.responderTerminationRequest,U,c,f),g.touchHistory=S.touchHistory,y(g,B),p=!g._dispatchListeners||t(g),g.isPersistent()||g.constructor.release(g),p){g=G.getPooled(Y.responderTerminate,U,c,f);g.touchHistory=S.touchHistory;y(g,
+B);var l=T(l,[e,g]);W(d,b)}else d=G.getPooled(Y.responderReject,d,c,f),d.touchHistory=S.touchHistory,y(d,B),l=T(l,d);else l=T(l,e),W(d,b);else l=null}else l=null;d=U&&H(a);e=U&&I(a);b=U&&J(a);if(d=d?Y.responderStart:e?Y.responderMove:b?Y.responderEnd:null)d=G.getPooled(d,U,c,f),d.touchHistory=S.touchHistory,y(d,B),l=T(l,d);d=U&&"touchcancel"===a;if(a=U&&!d&&J(a))a:{if((a=c.touches)&&0!==a.length)for(e=0;e<a.length;e++)if(b=a[e].target,null!==b&&void 0!==b&&0!==b){g=q(b);b:{for(b=U;g;){if(b===g||b===
+g.alternate){b=!0;break b}g=u(g)}b=!1}if(b){a=!1;break a}}a=!0}if(a=d?Y.responderTerminate:a?Y.responderRelease:null)c=G.getPooled(a,U,c,f),c.touchHistory=S.touchHistory,y(c,B),l=T(l,c),W(null);return l},GlobalResponderHandler:null,injection:{injectGlobalResponderHandler:function(a){X.GlobalResponderHandler=a}}},Z=h.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Events,ha=Z[3],ia=Z[0],ja=Z[1];n=Z[2];q=ia;r=ja;module.exports={__proto__:null,ResponderEventPlugin:X,ResponderTouchHistoryStore:S,injectEventPluginsByName:ha};
diff --git a/igv_component/node_modules/react-dom/cjs/react-dom.development.js b/igv_component/node_modules/react-dom/cjs/react-dom.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..b2e8c249db369d4a5849507a9298d0db911560e3
--- /dev/null
+++ b/igv_component/node_modules/react-dom/cjs/react-dom.development.js
@@ -0,0 +1,25012 @@
+/** @license React v16.14.0
+ * react-dom.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+var React = require('react');
+var _assign = require('object-assign');
+var Scheduler = require('scheduler');
+var checkPropTypes = require('prop-types/checkPropTypes');
+var tracing = require('scheduler/tracing');
+
+var ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED; // Prevent newer renderers from RTE when used with older react package versions.
+// Current owner and dispatcher used to share the same ref,
+// but PR #14548 split them out to better support the react-debug-tools package.
+
+if (!ReactSharedInternals.hasOwnProperty('ReactCurrentDispatcher')) {
+  ReactSharedInternals.ReactCurrentDispatcher = {
+    current: null
+  };
+}
+
+if (!ReactSharedInternals.hasOwnProperty('ReactCurrentBatchConfig')) {
+  ReactSharedInternals.ReactCurrentBatchConfig = {
+    suspense: null
+  };
+}
+
+// by calls to these methods by a Babel plugin.
+//
+// In PROD (or in packages without access to React internals),
+// they are left as they are instead.
+
+function warn(format) {
+  {
+    for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+      args[_key - 1] = arguments[_key];
+    }
+
+    printWarning('warn', format, args);
+  }
+}
+function error(format) {
+  {
+    for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+      args[_key2 - 1] = arguments[_key2];
+    }
+
+    printWarning('error', format, args);
+  }
+}
+
+function printWarning(level, format, args) {
+  // When changing this logic, you might want to also
+  // update consoleWithStackDev.www.js as well.
+  {
+    var hasExistingStack = args.length > 0 && typeof args[args.length - 1] === 'string' && args[args.length - 1].indexOf('\n    in') === 0;
+
+    if (!hasExistingStack) {
+      var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+      var stack = ReactDebugCurrentFrame.getStackAddendum();
+
+      if (stack !== '') {
+        format += '%s';
+        args = args.concat([stack]);
+      }
+    }
+
+    var argsWithFormat = args.map(function (item) {
+      return '' + item;
+    }); // Careful: RN currently depends on this prefix
+
+    argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it
+    // breaks IE9: https://github.com/facebook/react/issues/13610
+    // eslint-disable-next-line react-internal/no-production-logging
+
+    Function.prototype.apply.call(console[level], console, argsWithFormat);
+
+    try {
+      // --- Welcome to debugging React ---
+      // This error was thrown as a convenience so that you can use this stack
+      // to find the callsite that caused this warning to fire.
+      var argIndex = 0;
+      var message = 'Warning: ' + format.replace(/%s/g, function () {
+        return args[argIndex++];
+      });
+      throw new Error(message);
+    } catch (x) {}
+  }
+}
+
+if (!React) {
+  {
+    throw Error( "ReactDOM was loaded before React. Make sure you load the React package before loading ReactDOM." );
+  }
+}
+
+var invokeGuardedCallbackImpl = function (name, func, context, a, b, c, d, e, f) {
+  var funcArgs = Array.prototype.slice.call(arguments, 3);
+
+  try {
+    func.apply(context, funcArgs);
+  } catch (error) {
+    this.onError(error);
+  }
+};
+
+{
+  // In DEV mode, we swap out invokeGuardedCallback for a special version
+  // that plays more nicely with the browser's DevTools. The idea is to preserve
+  // "Pause on exceptions" behavior. Because React wraps all user-provided
+  // functions in invokeGuardedCallback, and the production version of
+  // invokeGuardedCallback uses a try-catch, all user exceptions are treated
+  // like caught exceptions, and the DevTools won't pause unless the developer
+  // takes the extra step of enabling pause on caught exceptions. This is
+  // unintuitive, though, because even though React has caught the error, from
+  // the developer's perspective, the error is uncaught.
+  //
+  // To preserve the expected "Pause on exceptions" behavior, we don't use a
+  // try-catch in DEV. Instead, we synchronously dispatch a fake event to a fake
+  // DOM node, and call the user-provided callback from inside an event handler
+  // for that fake event. If the callback throws, the error is "captured" using
+  // a global event handler. But because the error happens in a different
+  // event loop context, it does not interrupt the normal program flow.
+  // Effectively, this gives us try-catch behavior without actually using
+  // try-catch. Neat!
+  // Check that the browser supports the APIs we need to implement our special
+  // DEV version of invokeGuardedCallback
+  if (typeof window !== 'undefined' && typeof window.dispatchEvent === 'function' && typeof document !== 'undefined' && typeof document.createEvent === 'function') {
+    var fakeNode = document.createElement('react');
+
+    var invokeGuardedCallbackDev = function (name, func, context, a, b, c, d, e, f) {
+      // If document doesn't exist we know for sure we will crash in this method
+      // when we call document.createEvent(). However this can cause confusing
+      // errors: https://github.com/facebookincubator/create-react-app/issues/3482
+      // So we preemptively throw with a better message instead.
+      if (!(typeof document !== 'undefined')) {
+        {
+          throw Error( "The `document` global was defined when React was initialized, but is not defined anymore. This can happen in a test environment if a component schedules an update from an asynchronous callback, but the test has already finished running. To solve this, you can either unmount the component at the end of your test (and ensure that any asynchronous operations get canceled in `componentWillUnmount`), or you can change the test itself to be asynchronous." );
+        }
+      }
+
+      var evt = document.createEvent('Event'); // Keeps track of whether the user-provided callback threw an error. We
+      // set this to true at the beginning, then set it to false right after
+      // calling the function. If the function errors, `didError` will never be
+      // set to false. This strategy works even if the browser is flaky and
+      // fails to call our global error handler, because it doesn't rely on
+      // the error event at all.
+
+      var didError = true; // Keeps track of the value of window.event so that we can reset it
+      // during the callback to let user code access window.event in the
+      // browsers that support it.
+
+      var windowEvent = window.event; // Keeps track of the descriptor of window.event to restore it after event
+      // dispatching: https://github.com/facebook/react/issues/13688
+
+      var windowEventDescriptor = Object.getOwnPropertyDescriptor(window, 'event'); // Create an event handler for our fake event. We will synchronously
+      // dispatch our fake event using `dispatchEvent`. Inside the handler, we
+      // call the user-provided callback.
+
+      var funcArgs = Array.prototype.slice.call(arguments, 3);
+
+      function callCallback() {
+        // We immediately remove the callback from event listeners so that
+        // nested `invokeGuardedCallback` calls do not clash. Otherwise, a
+        // nested call would trigger the fake event handlers of any call higher
+        // in the stack.
+        fakeNode.removeEventListener(evtType, callCallback, false); // We check for window.hasOwnProperty('event') to prevent the
+        // window.event assignment in both IE <= 10 as they throw an error
+        // "Member not found" in strict mode, and in Firefox which does not
+        // support window.event.
+
+        if (typeof window.event !== 'undefined' && window.hasOwnProperty('event')) {
+          window.event = windowEvent;
+        }
+
+        func.apply(context, funcArgs);
+        didError = false;
+      } // Create a global error event handler. We use this to capture the value
+      // that was thrown. It's possible that this error handler will fire more
+      // than once; for example, if non-React code also calls `dispatchEvent`
+      // and a handler for that event throws. We should be resilient to most of
+      // those cases. Even if our error event handler fires more than once, the
+      // last error event is always used. If the callback actually does error,
+      // we know that the last error event is the correct one, because it's not
+      // possible for anything else to have happened in between our callback
+      // erroring and the code that follows the `dispatchEvent` call below. If
+      // the callback doesn't error, but the error event was fired, we know to
+      // ignore it because `didError` will be false, as described above.
+
+
+      var error; // Use this to track whether the error event is ever called.
+
+      var didSetError = false;
+      var isCrossOriginError = false;
+
+      function handleWindowError(event) {
+        error = event.error;
+        didSetError = true;
+
+        if (error === null && event.colno === 0 && event.lineno === 0) {
+          isCrossOriginError = true;
+        }
+
+        if (event.defaultPrevented) {
+          // Some other error handler has prevented default.
+          // Browsers silence the error report if this happens.
+          // We'll remember this to later decide whether to log it or not.
+          if (error != null && typeof error === 'object') {
+            try {
+              error._suppressLogging = true;
+            } catch (inner) {// Ignore.
+            }
+          }
+        }
+      } // Create a fake event type.
+
+
+      var evtType = "react-" + (name ? name : 'invokeguardedcallback'); // Attach our event handlers
+
+      window.addEventListener('error', handleWindowError);
+      fakeNode.addEventListener(evtType, callCallback, false); // Synchronously dispatch our fake event. If the user-provided function
+      // errors, it will trigger our global error handler.
+
+      evt.initEvent(evtType, false, false);
+      fakeNode.dispatchEvent(evt);
+
+      if (windowEventDescriptor) {
+        Object.defineProperty(window, 'event', windowEventDescriptor);
+      }
+
+      if (didError) {
+        if (!didSetError) {
+          // The callback errored, but the error event never fired.
+          error = new Error('An error was thrown inside one of your components, but React ' + "doesn't know what it was. This is likely due to browser " + 'flakiness. React does its best to preserve the "Pause on ' + 'exceptions" behavior of the DevTools, which requires some ' + "DEV-mode only tricks. It's possible that these don't work in " + 'your browser. Try triggering the error in production mode, ' + 'or switching to a modern browser. If you suspect that this is ' + 'actually an issue with React, please file an issue.');
+        } else if (isCrossOriginError) {
+          error = new Error("A cross-origin error was thrown. React doesn't have access to " + 'the actual error object in development. ' + 'See https://fb.me/react-crossorigin-error for more information.');
+        }
+
+        this.onError(error);
+      } // Remove our event listeners
+
+
+      window.removeEventListener('error', handleWindowError);
+    };
+
+    invokeGuardedCallbackImpl = invokeGuardedCallbackDev;
+  }
+}
+
+var invokeGuardedCallbackImpl$1 = invokeGuardedCallbackImpl;
+
+var hasError = false;
+var caughtError = null; // Used by event system to capture/rethrow the first error.
+
+var hasRethrowError = false;
+var rethrowError = null;
+var reporter = {
+  onError: function (error) {
+    hasError = true;
+    caughtError = error;
+  }
+};
+/**
+ * Call a function while guarding against errors that happens within it.
+ * Returns an error if it throws, otherwise null.
+ *
+ * In production, this is implemented using a try-catch. The reason we don't
+ * use a try-catch directly is so that we can swap out a different
+ * implementation in DEV mode.
+ *
+ * @param {String} name of the guard to use for logging or debugging
+ * @param {Function} func The function to invoke
+ * @param {*} context The context to use when calling the function
+ * @param {...*} args Arguments for function
+ */
+
+function invokeGuardedCallback(name, func, context, a, b, c, d, e, f) {
+  hasError = false;
+  caughtError = null;
+  invokeGuardedCallbackImpl$1.apply(reporter, arguments);
+}
+/**
+ * Same as invokeGuardedCallback, but instead of returning an error, it stores
+ * it in a global so it can be rethrown by `rethrowCaughtError` later.
+ * TODO: See if caughtError and rethrowError can be unified.
+ *
+ * @param {String} name of the guard to use for logging or debugging
+ * @param {Function} func The function to invoke
+ * @param {*} context The context to use when calling the function
+ * @param {...*} args Arguments for function
+ */
+
+function invokeGuardedCallbackAndCatchFirstError(name, func, context, a, b, c, d, e, f) {
+  invokeGuardedCallback.apply(this, arguments);
+
+  if (hasError) {
+    var error = clearCaughtError();
+
+    if (!hasRethrowError) {
+      hasRethrowError = true;
+      rethrowError = error;
+    }
+  }
+}
+/**
+ * During execution of guarded functions we will capture the first error which
+ * we will rethrow to be handled by the top level error handler.
+ */
+
+function rethrowCaughtError() {
+  if (hasRethrowError) {
+    var error = rethrowError;
+    hasRethrowError = false;
+    rethrowError = null;
+    throw error;
+  }
+}
+function hasCaughtError() {
+  return hasError;
+}
+function clearCaughtError() {
+  if (hasError) {
+    var error = caughtError;
+    hasError = false;
+    caughtError = null;
+    return error;
+  } else {
+    {
+      {
+        throw Error( "clearCaughtError was called but no error was captured. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+  }
+}
+
+var getFiberCurrentPropsFromNode = null;
+var getInstanceFromNode = null;
+var getNodeFromInstance = null;
+function setComponentTree(getFiberCurrentPropsFromNodeImpl, getInstanceFromNodeImpl, getNodeFromInstanceImpl) {
+  getFiberCurrentPropsFromNode = getFiberCurrentPropsFromNodeImpl;
+  getInstanceFromNode = getInstanceFromNodeImpl;
+  getNodeFromInstance = getNodeFromInstanceImpl;
+
+  {
+    if (!getNodeFromInstance || !getInstanceFromNode) {
+      error('EventPluginUtils.setComponentTree(...): Injected ' + 'module is missing getNodeFromInstance or getInstanceFromNode.');
+    }
+  }
+}
+var validateEventDispatches;
+
+{
+  validateEventDispatches = function (event) {
+    var dispatchListeners = event._dispatchListeners;
+    var dispatchInstances = event._dispatchInstances;
+    var listenersIsArr = Array.isArray(dispatchListeners);
+    var listenersLen = listenersIsArr ? dispatchListeners.length : dispatchListeners ? 1 : 0;
+    var instancesIsArr = Array.isArray(dispatchInstances);
+    var instancesLen = instancesIsArr ? dispatchInstances.length : dispatchInstances ? 1 : 0;
+
+    if (instancesIsArr !== listenersIsArr || instancesLen !== listenersLen) {
+      error('EventPluginUtils: Invalid `event`.');
+    }
+  };
+}
+/**
+ * Dispatch the event to the listener.
+ * @param {SyntheticEvent} event SyntheticEvent to handle
+ * @param {function} listener Application-level callback
+ * @param {*} inst Internal component instance
+ */
+
+
+function executeDispatch(event, listener, inst) {
+  var type = event.type || 'unknown-event';
+  event.currentTarget = getNodeFromInstance(inst);
+  invokeGuardedCallbackAndCatchFirstError(type, listener, undefined, event);
+  event.currentTarget = null;
+}
+/**
+ * Standard/simple iteration through an event's collected dispatches.
+ */
+
+function executeDispatchesInOrder(event) {
+  var dispatchListeners = event._dispatchListeners;
+  var dispatchInstances = event._dispatchInstances;
+
+  {
+    validateEventDispatches(event);
+  }
+
+  if (Array.isArray(dispatchListeners)) {
+    for (var i = 0; i < dispatchListeners.length; i++) {
+      if (event.isPropagationStopped()) {
+        break;
+      } // Listeners and Instances are two parallel arrays that are always in sync.
+
+
+      executeDispatch(event, dispatchListeners[i], dispatchInstances[i]);
+    }
+  } else if (dispatchListeners) {
+    executeDispatch(event, dispatchListeners, dispatchInstances);
+  }
+
+  event._dispatchListeners = null;
+  event._dispatchInstances = null;
+}
+
+var FunctionComponent = 0;
+var ClassComponent = 1;
+var IndeterminateComponent = 2; // Before we know whether it is function or class
+
+var HostRoot = 3; // Root of a host tree. Could be nested inside another node.
+
+var HostPortal = 4; // A subtree. Could be an entry point to a different renderer.
+
+var HostComponent = 5;
+var HostText = 6;
+var Fragment = 7;
+var Mode = 8;
+var ContextConsumer = 9;
+var ContextProvider = 10;
+var ForwardRef = 11;
+var Profiler = 12;
+var SuspenseComponent = 13;
+var MemoComponent = 14;
+var SimpleMemoComponent = 15;
+var LazyComponent = 16;
+var IncompleteClassComponent = 17;
+var DehydratedFragment = 18;
+var SuspenseListComponent = 19;
+var FundamentalComponent = 20;
+var ScopeComponent = 21;
+var Block = 22;
+
+/**
+ * Injectable ordering of event plugins.
+ */
+var eventPluginOrder = null;
+/**
+ * Injectable mapping from names to event plugin modules.
+ */
+
+var namesToPlugins = {};
+/**
+ * Recomputes the plugin list using the injected plugins and plugin ordering.
+ *
+ * @private
+ */
+
+function recomputePluginOrdering() {
+  if (!eventPluginOrder) {
+    // Wait until an `eventPluginOrder` is injected.
+    return;
+  }
+
+  for (var pluginName in namesToPlugins) {
+    var pluginModule = namesToPlugins[pluginName];
+    var pluginIndex = eventPluginOrder.indexOf(pluginName);
+
+    if (!(pluginIndex > -1)) {
+      {
+        throw Error( "EventPluginRegistry: Cannot inject event plugins that do not exist in the plugin ordering, `" + pluginName + "`." );
+      }
+    }
+
+    if (plugins[pluginIndex]) {
+      continue;
+    }
+
+    if (!pluginModule.extractEvents) {
+      {
+        throw Error( "EventPluginRegistry: Event plugins must implement an `extractEvents` method, but `" + pluginName + "` does not." );
+      }
+    }
+
+    plugins[pluginIndex] = pluginModule;
+    var publishedEvents = pluginModule.eventTypes;
+
+    for (var eventName in publishedEvents) {
+      if (!publishEventForPlugin(publishedEvents[eventName], pluginModule, eventName)) {
+        {
+          throw Error( "EventPluginRegistry: Failed to publish event `" + eventName + "` for plugin `" + pluginName + "`." );
+        }
+      }
+    }
+  }
+}
+/**
+ * Publishes an event so that it can be dispatched by the supplied plugin.
+ *
+ * @param {object} dispatchConfig Dispatch configuration for the event.
+ * @param {object} PluginModule Plugin publishing the event.
+ * @return {boolean} True if the event was successfully published.
+ * @private
+ */
+
+
+function publishEventForPlugin(dispatchConfig, pluginModule, eventName) {
+  if (!!eventNameDispatchConfigs.hasOwnProperty(eventName)) {
+    {
+      throw Error( "EventPluginRegistry: More than one plugin attempted to publish the same event name, `" + eventName + "`." );
+    }
+  }
+
+  eventNameDispatchConfigs[eventName] = dispatchConfig;
+  var phasedRegistrationNames = dispatchConfig.phasedRegistrationNames;
+
+  if (phasedRegistrationNames) {
+    for (var phaseName in phasedRegistrationNames) {
+      if (phasedRegistrationNames.hasOwnProperty(phaseName)) {
+        var phasedRegistrationName = phasedRegistrationNames[phaseName];
+        publishRegistrationName(phasedRegistrationName, pluginModule, eventName);
+      }
+    }
+
+    return true;
+  } else if (dispatchConfig.registrationName) {
+    publishRegistrationName(dispatchConfig.registrationName, pluginModule, eventName);
+    return true;
+  }
+
+  return false;
+}
+/**
+ * Publishes a registration name that is used to identify dispatched events.
+ *
+ * @param {string} registrationName Registration name to add.
+ * @param {object} PluginModule Plugin publishing the event.
+ * @private
+ */
+
+
+function publishRegistrationName(registrationName, pluginModule, eventName) {
+  if (!!registrationNameModules[registrationName]) {
+    {
+      throw Error( "EventPluginRegistry: More than one plugin attempted to publish the same registration name, `" + registrationName + "`." );
+    }
+  }
+
+  registrationNameModules[registrationName] = pluginModule;
+  registrationNameDependencies[registrationName] = pluginModule.eventTypes[eventName].dependencies;
+
+  {
+    var lowerCasedName = registrationName.toLowerCase();
+    possibleRegistrationNames[lowerCasedName] = registrationName;
+
+    if (registrationName === 'onDoubleClick') {
+      possibleRegistrationNames.ondblclick = registrationName;
+    }
+  }
+}
+/**
+ * Registers plugins so that they can extract and dispatch events.
+ */
+
+/**
+ * Ordered list of injected plugins.
+ */
+
+
+var plugins = [];
+/**
+ * Mapping from event name to dispatch config
+ */
+
+var eventNameDispatchConfigs = {};
+/**
+ * Mapping from registration name to plugin module
+ */
+
+var registrationNameModules = {};
+/**
+ * Mapping from registration name to event name
+ */
+
+var registrationNameDependencies = {};
+/**
+ * Mapping from lowercase registration names to the properly cased version,
+ * used to warn in the case of missing event handlers. Available
+ * only in true.
+ * @type {Object}
+ */
+
+var possibleRegistrationNames =  {} ; // Trust the developer to only use possibleRegistrationNames in true
+
+/**
+ * Injects an ordering of plugins (by plugin name). This allows the ordering
+ * to be decoupled from injection of the actual plugins so that ordering is
+ * always deterministic regardless of packaging, on-the-fly injection, etc.
+ *
+ * @param {array} InjectedEventPluginOrder
+ * @internal
+ */
+
+function injectEventPluginOrder(injectedEventPluginOrder) {
+  if (!!eventPluginOrder) {
+    {
+      throw Error( "EventPluginRegistry: Cannot inject event plugin ordering more than once. You are likely trying to load more than one copy of React." );
+    }
+  } // Clone the ordering so it cannot be dynamically mutated.
+
+
+  eventPluginOrder = Array.prototype.slice.call(injectedEventPluginOrder);
+  recomputePluginOrdering();
+}
+/**
+ * Injects plugins to be used by plugin event system. The plugin names must be
+ * in the ordering injected by `injectEventPluginOrder`.
+ *
+ * Plugins can be injected as part of page initialization or on-the-fly.
+ *
+ * @param {object} injectedNamesToPlugins Map from names to plugin modules.
+ * @internal
+ */
+
+function injectEventPluginsByName(injectedNamesToPlugins) {
+  var isOrderingDirty = false;
+
+  for (var pluginName in injectedNamesToPlugins) {
+    if (!injectedNamesToPlugins.hasOwnProperty(pluginName)) {
+      continue;
+    }
+
+    var pluginModule = injectedNamesToPlugins[pluginName];
+
+    if (!namesToPlugins.hasOwnProperty(pluginName) || namesToPlugins[pluginName] !== pluginModule) {
+      if (!!namesToPlugins[pluginName]) {
+        {
+          throw Error( "EventPluginRegistry: Cannot inject two different event plugins using the same name, `" + pluginName + "`." );
+        }
+      }
+
+      namesToPlugins[pluginName] = pluginModule;
+      isOrderingDirty = true;
+    }
+  }
+
+  if (isOrderingDirty) {
+    recomputePluginOrdering();
+  }
+}
+
+var canUseDOM = !!(typeof window !== 'undefined' && typeof window.document !== 'undefined' && typeof window.document.createElement !== 'undefined');
+
+var PLUGIN_EVENT_SYSTEM = 1;
+var IS_REPLAYED = 1 << 5;
+var IS_FIRST_ANCESTOR = 1 << 6;
+
+var restoreImpl = null;
+var restoreTarget = null;
+var restoreQueue = null;
+
+function restoreStateOfTarget(target) {
+  // We perform this translation at the end of the event loop so that we
+  // always receive the correct fiber here
+  var internalInstance = getInstanceFromNode(target);
+
+  if (!internalInstance) {
+    // Unmounted
+    return;
+  }
+
+  if (!(typeof restoreImpl === 'function')) {
+    {
+      throw Error( "setRestoreImplementation() needs to be called to handle a target for controlled events. This error is likely caused by a bug in React. Please file an issue." );
+    }
+  }
+
+  var stateNode = internalInstance.stateNode; // Guard against Fiber being unmounted.
+
+  if (stateNode) {
+    var _props = getFiberCurrentPropsFromNode(stateNode);
+
+    restoreImpl(internalInstance.stateNode, internalInstance.type, _props);
+  }
+}
+
+function setRestoreImplementation(impl) {
+  restoreImpl = impl;
+}
+function enqueueStateRestore(target) {
+  if (restoreTarget) {
+    if (restoreQueue) {
+      restoreQueue.push(target);
+    } else {
+      restoreQueue = [target];
+    }
+  } else {
+    restoreTarget = target;
+  }
+}
+function needsStateRestore() {
+  return restoreTarget !== null || restoreQueue !== null;
+}
+function restoreStateIfNeeded() {
+  if (!restoreTarget) {
+    return;
+  }
+
+  var target = restoreTarget;
+  var queuedTargets = restoreQueue;
+  restoreTarget = null;
+  restoreQueue = null;
+  restoreStateOfTarget(target);
+
+  if (queuedTargets) {
+    for (var i = 0; i < queuedTargets.length; i++) {
+      restoreStateOfTarget(queuedTargets[i]);
+    }
+  }
+}
+
+var enableProfilerTimer = true; // Trace which interactions trigger each commit.
+
+var enableDeprecatedFlareAPI = false; // Experimental Host Component support.
+
+var enableFundamentalAPI = false; // Experimental Scope support.
+var warnAboutStringRefs = false;
+
+// the renderer. Such as when we're dispatching events or if third party
+// libraries need to call batchedUpdates. Eventually, this API will go away when
+// everything is batched by default. We'll then have a similar API to opt-out of
+// scheduled work and instead do synchronous work.
+// Defaults
+
+var batchedUpdatesImpl = function (fn, bookkeeping) {
+  return fn(bookkeeping);
+};
+
+var discreteUpdatesImpl = function (fn, a, b, c, d) {
+  return fn(a, b, c, d);
+};
+
+var flushDiscreteUpdatesImpl = function () {};
+
+var batchedEventUpdatesImpl = batchedUpdatesImpl;
+var isInsideEventHandler = false;
+var isBatchingEventUpdates = false;
+
+function finishEventHandler() {
+  // Here we wait until all updates have propagated, which is important
+  // when using controlled components within layers:
+  // https://github.com/facebook/react/issues/1698
+  // Then we restore state of any controlled component.
+  var controlledComponentsHavePendingUpdates = needsStateRestore();
+
+  if (controlledComponentsHavePendingUpdates) {
+    // If a controlled event was fired, we may need to restore the state of
+    // the DOM node back to the controlled value. This is necessary when React
+    // bails out of the update without touching the DOM.
+    flushDiscreteUpdatesImpl();
+    restoreStateIfNeeded();
+  }
+}
+
+function batchedUpdates(fn, bookkeeping) {
+  if (isInsideEventHandler) {
+    // If we are currently inside another batch, we need to wait until it
+    // fully completes before restoring state.
+    return fn(bookkeeping);
+  }
+
+  isInsideEventHandler = true;
+
+  try {
+    return batchedUpdatesImpl(fn, bookkeeping);
+  } finally {
+    isInsideEventHandler = false;
+    finishEventHandler();
+  }
+}
+function batchedEventUpdates(fn, a, b) {
+  if (isBatchingEventUpdates) {
+    // If we are currently inside another batch, we need to wait until it
+    // fully completes before restoring state.
+    return fn(a, b);
+  }
+
+  isBatchingEventUpdates = true;
+
+  try {
+    return batchedEventUpdatesImpl(fn, a, b);
+  } finally {
+    isBatchingEventUpdates = false;
+    finishEventHandler();
+  }
+} // This is for the React Flare event system
+function discreteUpdates(fn, a, b, c, d) {
+  var prevIsInsideEventHandler = isInsideEventHandler;
+  isInsideEventHandler = true;
+
+  try {
+    return discreteUpdatesImpl(fn, a, b, c, d);
+  } finally {
+    isInsideEventHandler = prevIsInsideEventHandler;
+
+    if (!isInsideEventHandler) {
+      finishEventHandler();
+    }
+  }
+}
+function flushDiscreteUpdatesIfNeeded(timeStamp) {
+  // event.timeStamp isn't overly reliable due to inconsistencies in
+  // how different browsers have historically provided the time stamp.
+  // Some browsers provide high-resolution time stamps for all events,
+  // some provide low-resolution time stamps for all events. FF < 52
+  // even mixes both time stamps together. Some browsers even report
+  // negative time stamps or time stamps that are 0 (iOS9) in some cases.
+  // Given we are only comparing two time stamps with equality (!==),
+  // we are safe from the resolution differences. If the time stamp is 0
+  // we bail-out of preventing the flush, which can affect semantics,
+  // such as if an earlier flush removes or adds event listeners that
+  // are fired in the subsequent flush. However, this is the same
+  // behaviour as we had before this change, so the risks are low.
+  if (!isInsideEventHandler && (!enableDeprecatedFlareAPI  )) {
+    flushDiscreteUpdatesImpl();
+  }
+}
+function setBatchingImplementation(_batchedUpdatesImpl, _discreteUpdatesImpl, _flushDiscreteUpdatesImpl, _batchedEventUpdatesImpl) {
+  batchedUpdatesImpl = _batchedUpdatesImpl;
+  discreteUpdatesImpl = _discreteUpdatesImpl;
+  flushDiscreteUpdatesImpl = _flushDiscreteUpdatesImpl;
+  batchedEventUpdatesImpl = _batchedEventUpdatesImpl;
+}
+
+var DiscreteEvent = 0;
+var UserBlockingEvent = 1;
+var ContinuousEvent = 2;
+
+// A reserved attribute.
+// It is handled by React separately and shouldn't be written to the DOM.
+var RESERVED = 0; // A simple string attribute.
+// Attributes that aren't in the whitelist are presumed to have this type.
+
+var STRING = 1; // A string attribute that accepts booleans in React. In HTML, these are called
+// "enumerated" attributes with "true" and "false" as possible values.
+// When true, it should be set to a "true" string.
+// When false, it should be set to a "false" string.
+
+var BOOLEANISH_STRING = 2; // A real boolean attribute.
+// When true, it should be present (set either to an empty string or its name).
+// When false, it should be omitted.
+
+var BOOLEAN = 3; // An attribute that can be used as a flag as well as with a value.
+// When true, it should be present (set either to an empty string or its name).
+// When false, it should be omitted.
+// For any other value, should be present with that value.
+
+var OVERLOADED_BOOLEAN = 4; // An attribute that must be numeric or parse as a numeric.
+// When falsy, it should be removed.
+
+var NUMERIC = 5; // An attribute that must be positive numeric or parse as a positive numeric.
+// When falsy, it should be removed.
+
+var POSITIVE_NUMERIC = 6;
+
+/* eslint-disable max-len */
+var ATTRIBUTE_NAME_START_CHAR = ":A-Z_a-z\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u02FF\\u0370-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD";
+/* eslint-enable max-len */
+
+var ATTRIBUTE_NAME_CHAR = ATTRIBUTE_NAME_START_CHAR + "\\-.0-9\\u00B7\\u0300-\\u036F\\u203F-\\u2040";
+var ROOT_ATTRIBUTE_NAME = 'data-reactroot';
+var VALID_ATTRIBUTE_NAME_REGEX = new RegExp('^[' + ATTRIBUTE_NAME_START_CHAR + '][' + ATTRIBUTE_NAME_CHAR + ']*$');
+var hasOwnProperty = Object.prototype.hasOwnProperty;
+var illegalAttributeNameCache = {};
+var validatedAttributeNameCache = {};
+function isAttributeNameSafe(attributeName) {
+  if (hasOwnProperty.call(validatedAttributeNameCache, attributeName)) {
+    return true;
+  }
+
+  if (hasOwnProperty.call(illegalAttributeNameCache, attributeName)) {
+    return false;
+  }
+
+  if (VALID_ATTRIBUTE_NAME_REGEX.test(attributeName)) {
+    validatedAttributeNameCache[attributeName] = true;
+    return true;
+  }
+
+  illegalAttributeNameCache[attributeName] = true;
+
+  {
+    error('Invalid attribute name: `%s`', attributeName);
+  }
+
+  return false;
+}
+function shouldIgnoreAttribute(name, propertyInfo, isCustomComponentTag) {
+  if (propertyInfo !== null) {
+    return propertyInfo.type === RESERVED;
+  }
+
+  if (isCustomComponentTag) {
+    return false;
+  }
+
+  if (name.length > 2 && (name[0] === 'o' || name[0] === 'O') && (name[1] === 'n' || name[1] === 'N')) {
+    return true;
+  }
+
+  return false;
+}
+function shouldRemoveAttributeWithWarning(name, value, propertyInfo, isCustomComponentTag) {
+  if (propertyInfo !== null && propertyInfo.type === RESERVED) {
+    return false;
+  }
+
+  switch (typeof value) {
+    case 'function': // $FlowIssue symbol is perfectly valid here
+
+    case 'symbol':
+      // eslint-disable-line
+      return true;
+
+    case 'boolean':
+      {
+        if (isCustomComponentTag) {
+          return false;
+        }
+
+        if (propertyInfo !== null) {
+          return !propertyInfo.acceptsBooleans;
+        } else {
+          var prefix = name.toLowerCase().slice(0, 5);
+          return prefix !== 'data-' && prefix !== 'aria-';
+        }
+      }
+
+    default:
+      return false;
+  }
+}
+function shouldRemoveAttribute(name, value, propertyInfo, isCustomComponentTag) {
+  if (value === null || typeof value === 'undefined') {
+    return true;
+  }
+
+  if (shouldRemoveAttributeWithWarning(name, value, propertyInfo, isCustomComponentTag)) {
+    return true;
+  }
+
+  if (isCustomComponentTag) {
+    return false;
+  }
+
+  if (propertyInfo !== null) {
+    switch (propertyInfo.type) {
+      case BOOLEAN:
+        return !value;
+
+      case OVERLOADED_BOOLEAN:
+        return value === false;
+
+      case NUMERIC:
+        return isNaN(value);
+
+      case POSITIVE_NUMERIC:
+        return isNaN(value) || value < 1;
+    }
+  }
+
+  return false;
+}
+function getPropertyInfo(name) {
+  return properties.hasOwnProperty(name) ? properties[name] : null;
+}
+
+function PropertyInfoRecord(name, type, mustUseProperty, attributeName, attributeNamespace, sanitizeURL) {
+  this.acceptsBooleans = type === BOOLEANISH_STRING || type === BOOLEAN || type === OVERLOADED_BOOLEAN;
+  this.attributeName = attributeName;
+  this.attributeNamespace = attributeNamespace;
+  this.mustUseProperty = mustUseProperty;
+  this.propertyName = name;
+  this.type = type;
+  this.sanitizeURL = sanitizeURL;
+} // When adding attributes to this list, be sure to also add them to
+// the `possibleStandardNames` module to ensure casing and incorrect
+// name warnings.
+
+
+var properties = {}; // These props are reserved by React. They shouldn't be written to the DOM.
+
+var reservedProps = ['children', 'dangerouslySetInnerHTML', // TODO: This prevents the assignment of defaultValue to regular
+// elements (not just inputs). Now that ReactDOMInput assigns to the
+// defaultValue property -- do we need this?
+'defaultValue', 'defaultChecked', 'innerHTML', 'suppressContentEditableWarning', 'suppressHydrationWarning', 'style'];
+
+reservedProps.forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, RESERVED, false, // mustUseProperty
+  name, // attributeName
+  null, // attributeNamespace
+  false);
+}); // A few React string attributes have a different name.
+// This is a mapping from React prop names to the attribute names.
+
+[['acceptCharset', 'accept-charset'], ['className', 'class'], ['htmlFor', 'for'], ['httpEquiv', 'http-equiv']].forEach(function (_ref) {
+  var name = _ref[0],
+      attributeName = _ref[1];
+  properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+  attributeName, // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are "enumerated" HTML attributes that accept "true" and "false".
+// In React, we let users pass `true` and `false` even though technically
+// these aren't boolean attributes (they are coerced to strings).
+
+['contentEditable', 'draggable', 'spellCheck', 'value'].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, BOOLEANISH_STRING, false, // mustUseProperty
+  name.toLowerCase(), // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are "enumerated" SVG attributes that accept "true" and "false".
+// In React, we let users pass `true` and `false` even though technically
+// these aren't boolean attributes (they are coerced to strings).
+// Since these are SVG attributes, their attribute names are case-sensitive.
+
+['autoReverse', 'externalResourcesRequired', 'focusable', 'preserveAlpha'].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, BOOLEANISH_STRING, false, // mustUseProperty
+  name, // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are HTML boolean attributes.
+
+['allowFullScreen', 'async', // Note: there is a special case that prevents it from being written to the DOM
+// on the client side because the browsers are inconsistent. Instead we call focus().
+'autoFocus', 'autoPlay', 'controls', 'default', 'defer', 'disabled', 'disablePictureInPicture', 'formNoValidate', 'hidden', 'loop', 'noModule', 'noValidate', 'open', 'playsInline', 'readOnly', 'required', 'reversed', 'scoped', 'seamless', // Microdata
+'itemScope'].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, BOOLEAN, false, // mustUseProperty
+  name.toLowerCase(), // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are the few React props that we set as DOM properties
+// rather than attributes. These are all booleans.
+
+['checked', // Note: `option.selected` is not updated if `select.multiple` is
+// disabled with `removeAttribute`. We have special logic for handling this.
+'multiple', 'muted', 'selected' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, BOOLEAN, true, // mustUseProperty
+  name, // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are HTML attributes that are "overloaded booleans": they behave like
+// booleans, but can also accept a string value.
+
+['capture', 'download' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, OVERLOADED_BOOLEAN, false, // mustUseProperty
+  name, // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are HTML attributes that must be positive numbers.
+
+['cols', 'rows', 'size', 'span' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, POSITIVE_NUMERIC, false, // mustUseProperty
+  name, // attributeName
+  null, // attributeNamespace
+  false);
+}); // These are HTML attributes that must be numbers.
+
+['rowSpan', 'start'].forEach(function (name) {
+  properties[name] = new PropertyInfoRecord(name, NUMERIC, false, // mustUseProperty
+  name.toLowerCase(), // attributeName
+  null, // attributeNamespace
+  false);
+});
+var CAMELIZE = /[\-\:]([a-z])/g;
+
+var capitalize = function (token) {
+  return token[1].toUpperCase();
+}; // This is a list of all SVG attributes that need special casing, namespacing,
+// or boolean value assignment. Regular attributes that just accept strings
+// and have the same names are omitted, just like in the HTML whitelist.
+// Some of these attributes can be hard to find. This list was created by
+// scraping the MDN documentation.
+
+
+['accent-height', 'alignment-baseline', 'arabic-form', 'baseline-shift', 'cap-height', 'clip-path', 'clip-rule', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'dominant-baseline', 'enable-background', 'fill-opacity', 'fill-rule', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'glyph-name', 'glyph-orientation-horizontal', 'glyph-orientation-vertical', 'horiz-adv-x', 'horiz-origin-x', 'image-rendering', 'letter-spacing', 'lighting-color', 'marker-end', 'marker-mid', 'marker-start', 'overline-position', 'overline-thickness', 'paint-order', 'panose-1', 'pointer-events', 'rendering-intent', 'shape-rendering', 'stop-color', 'stop-opacity', 'strikethrough-position', 'strikethrough-thickness', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'text-anchor', 'text-decoration', 'text-rendering', 'underline-position', 'underline-thickness', 'unicode-bidi', 'unicode-range', 'units-per-em', 'v-alphabetic', 'v-hanging', 'v-ideographic', 'v-mathematical', 'vector-effect', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'word-spacing', 'writing-mode', 'xmlns:xlink', 'x-height' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (attributeName) {
+  var name = attributeName.replace(CAMELIZE, capitalize);
+  properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+  attributeName, null, // attributeNamespace
+  false);
+}); // String SVG attributes with the xlink namespace.
+
+['xlink:actuate', 'xlink:arcrole', 'xlink:role', 'xlink:show', 'xlink:title', 'xlink:type' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (attributeName) {
+  var name = attributeName.replace(CAMELIZE, capitalize);
+  properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+  attributeName, 'http://www.w3.org/1999/xlink', false);
+}); // String SVG attributes with the xml namespace.
+
+['xml:base', 'xml:lang', 'xml:space' // NOTE: if you add a camelCased prop to this list,
+// you'll need to set attributeName to name.toLowerCase()
+// instead in the assignment below.
+].forEach(function (attributeName) {
+  var name = attributeName.replace(CAMELIZE, capitalize);
+  properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+  attributeName, 'http://www.w3.org/XML/1998/namespace', false);
+}); // These attribute exists both in HTML and SVG.
+// The attribute name is case-sensitive in SVG so we can't just use
+// the React name like we do for attributes that exist only in HTML.
+
+['tabIndex', 'crossOrigin'].forEach(function (attributeName) {
+  properties[attributeName] = new PropertyInfoRecord(attributeName, STRING, false, // mustUseProperty
+  attributeName.toLowerCase(), // attributeName
+  null, // attributeNamespace
+  false);
+}); // These attributes accept URLs. These must not allow javascript: URLS.
+// These will also need to accept Trusted Types object in the future.
+
+var xlinkHref = 'xlinkHref';
+properties[xlinkHref] = new PropertyInfoRecord('xlinkHref', STRING, false, // mustUseProperty
+'xlink:href', 'http://www.w3.org/1999/xlink', true);
+['src', 'href', 'action', 'formAction'].forEach(function (attributeName) {
+  properties[attributeName] = new PropertyInfoRecord(attributeName, STRING, false, // mustUseProperty
+  attributeName.toLowerCase(), // attributeName
+  null, // attributeNamespace
+  true);
+});
+
+var ReactDebugCurrentFrame = null;
+
+{
+  ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+} // A javascript: URL can contain leading C0 control or \u0020 SPACE,
+// and any newline or tab are filtered out as if they're not part of the URL.
+// https://url.spec.whatwg.org/#url-parsing
+// Tab or newline are defined as \r\n\t:
+// https://infra.spec.whatwg.org/#ascii-tab-or-newline
+// A C0 control is a code point in the range \u0000 NULL to \u001F
+// INFORMATION SEPARATOR ONE, inclusive:
+// https://infra.spec.whatwg.org/#c0-control-or-space
+
+/* eslint-disable max-len */
+
+
+var isJavaScriptProtocol = /^[\u0000-\u001F ]*j[\r\n\t]*a[\r\n\t]*v[\r\n\t]*a[\r\n\t]*s[\r\n\t]*c[\r\n\t]*r[\r\n\t]*i[\r\n\t]*p[\r\n\t]*t[\r\n\t]*\:/i;
+var didWarn = false;
+
+function sanitizeURL(url) {
+  {
+    if (!didWarn && isJavaScriptProtocol.test(url)) {
+      didWarn = true;
+
+      error('A future version of React will block javascript: URLs as a security precaution. ' + 'Use event handlers instead if you can. If you need to generate unsafe HTML try ' + 'using dangerouslySetInnerHTML instead. React was passed %s.', JSON.stringify(url));
+    }
+  }
+}
+
+/**
+ * Get the value for a property on a node. Only used in DEV for SSR validation.
+ * The "expected" argument is used as a hint of what the expected value is.
+ * Some properties have multiple equivalent values.
+ */
+function getValueForProperty(node, name, expected, propertyInfo) {
+  {
+    if (propertyInfo.mustUseProperty) {
+      var propertyName = propertyInfo.propertyName;
+      return node[propertyName];
+    } else {
+      if ( propertyInfo.sanitizeURL) {
+        // If we haven't fully disabled javascript: URLs, and if
+        // the hydration is successful of a javascript: URL, we
+        // still want to warn on the client.
+        sanitizeURL('' + expected);
+      }
+
+      var attributeName = propertyInfo.attributeName;
+      var stringValue = null;
+
+      if (propertyInfo.type === OVERLOADED_BOOLEAN) {
+        if (node.hasAttribute(attributeName)) {
+          var value = node.getAttribute(attributeName);
+
+          if (value === '') {
+            return true;
+          }
+
+          if (shouldRemoveAttribute(name, expected, propertyInfo, false)) {
+            return value;
+          }
+
+          if (value === '' + expected) {
+            return expected;
+          }
+
+          return value;
+        }
+      } else if (node.hasAttribute(attributeName)) {
+        if (shouldRemoveAttribute(name, expected, propertyInfo, false)) {
+          // We had an attribute but shouldn't have had one, so read it
+          // for the error message.
+          return node.getAttribute(attributeName);
+        }
+
+        if (propertyInfo.type === BOOLEAN) {
+          // If this was a boolean, it doesn't matter what the value is
+          // the fact that we have it is the same as the expected.
+          return expected;
+        } // Even if this property uses a namespace we use getAttribute
+        // because we assume its namespaced name is the same as our config.
+        // To use getAttributeNS we need the local name which we don't have
+        // in our config atm.
+
+
+        stringValue = node.getAttribute(attributeName);
+      }
+
+      if (shouldRemoveAttribute(name, expected, propertyInfo, false)) {
+        return stringValue === null ? expected : stringValue;
+      } else if (stringValue === '' + expected) {
+        return expected;
+      } else {
+        return stringValue;
+      }
+    }
+  }
+}
+/**
+ * Get the value for a attribute on a node. Only used in DEV for SSR validation.
+ * The third argument is used as a hint of what the expected value is. Some
+ * attributes have multiple equivalent values.
+ */
+
+function getValueForAttribute(node, name, expected) {
+  {
+    if (!isAttributeNameSafe(name)) {
+      return;
+    }
+
+    if (!node.hasAttribute(name)) {
+      return expected === undefined ? undefined : null;
+    }
+
+    var value = node.getAttribute(name);
+
+    if (value === '' + expected) {
+      return expected;
+    }
+
+    return value;
+  }
+}
+/**
+ * Sets the value for a property on a node.
+ *
+ * @param {DOMElement} node
+ * @param {string} name
+ * @param {*} value
+ */
+
+function setValueForProperty(node, name, value, isCustomComponentTag) {
+  var propertyInfo = getPropertyInfo(name);
+
+  if (shouldIgnoreAttribute(name, propertyInfo, isCustomComponentTag)) {
+    return;
+  }
+
+  if (shouldRemoveAttribute(name, value, propertyInfo, isCustomComponentTag)) {
+    value = null;
+  } // If the prop isn't in the special list, treat it as a simple attribute.
+
+
+  if (isCustomComponentTag || propertyInfo === null) {
+    if (isAttributeNameSafe(name)) {
+      var _attributeName = name;
+
+      if (value === null) {
+        node.removeAttribute(_attributeName);
+      } else {
+        node.setAttribute(_attributeName,  '' + value);
+      }
+    }
+
+    return;
+  }
+
+  var mustUseProperty = propertyInfo.mustUseProperty;
+
+  if (mustUseProperty) {
+    var propertyName = propertyInfo.propertyName;
+
+    if (value === null) {
+      var type = propertyInfo.type;
+      node[propertyName] = type === BOOLEAN ? false : '';
+    } else {
+      // Contrary to `setAttribute`, object properties are properly
+      // `toString`ed by IE8/9.
+      node[propertyName] = value;
+    }
+
+    return;
+  } // The rest are treated as attributes with special cases.
+
+
+  var attributeName = propertyInfo.attributeName,
+      attributeNamespace = propertyInfo.attributeNamespace;
+
+  if (value === null) {
+    node.removeAttribute(attributeName);
+  } else {
+    var _type = propertyInfo.type;
+    var attributeValue;
+
+    if (_type === BOOLEAN || _type === OVERLOADED_BOOLEAN && value === true) {
+      // If attribute type is boolean, we know for sure it won't be an execution sink
+      // and we won't require Trusted Type here.
+      attributeValue = '';
+    } else {
+      // `setAttribute` with objects becomes only `[object]` in IE8/9,
+      // ('' + value) makes it output the correct toString()-value.
+      {
+        attributeValue = '' + value;
+      }
+
+      if (propertyInfo.sanitizeURL) {
+        sanitizeURL(attributeValue.toString());
+      }
+    }
+
+    if (attributeNamespace) {
+      node.setAttributeNS(attributeNamespace, attributeName, attributeValue);
+    } else {
+      node.setAttribute(attributeName, attributeValue);
+    }
+  }
+}
+
+var BEFORE_SLASH_RE = /^(.*)[\\\/]/;
+function describeComponentFrame (name, source, ownerName) {
+  var sourceInfo = '';
+
+  if (source) {
+    var path = source.fileName;
+    var fileName = path.replace(BEFORE_SLASH_RE, '');
+
+    {
+      // In DEV, include code for a common special case:
+      // prefer "folder/index.js" instead of just "index.js".
+      if (/^index\./.test(fileName)) {
+        var match = path.match(BEFORE_SLASH_RE);
+
+        if (match) {
+          var pathBeforeSlash = match[1];
+
+          if (pathBeforeSlash) {
+            var folderName = pathBeforeSlash.replace(BEFORE_SLASH_RE, '');
+            fileName = folderName + '/' + fileName;
+          }
+        }
+      }
+    }
+
+    sourceInfo = ' (at ' + fileName + ':' + source.lineNumber + ')';
+  } else if (ownerName) {
+    sourceInfo = ' (created by ' + ownerName + ')';
+  }
+
+  return '\n    in ' + (name || 'Unknown') + sourceInfo;
+}
+
+// The Symbol used to tag the ReactElement-like types. If there is no native Symbol
+// nor polyfill, then a plain number is used for performance.
+var hasSymbol = typeof Symbol === 'function' && Symbol.for;
+var REACT_ELEMENT_TYPE = hasSymbol ? Symbol.for('react.element') : 0xeac7;
+var REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca;
+var REACT_FRAGMENT_TYPE = hasSymbol ? Symbol.for('react.fragment') : 0xeacb;
+var REACT_STRICT_MODE_TYPE = hasSymbol ? Symbol.for('react.strict_mode') : 0xeacc;
+var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for('react.profiler') : 0xead2;
+var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for('react.provider') : 0xeacd;
+var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for('react.context') : 0xeace; // TODO: We don't use AsyncMode or ConcurrentMode anymore. They were temporary
+var REACT_CONCURRENT_MODE_TYPE = hasSymbol ? Symbol.for('react.concurrent_mode') : 0xeacf;
+var REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for('react.forward_ref') : 0xead0;
+var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for('react.suspense') : 0xead1;
+var REACT_SUSPENSE_LIST_TYPE = hasSymbol ? Symbol.for('react.suspense_list') : 0xead8;
+var REACT_MEMO_TYPE = hasSymbol ? Symbol.for('react.memo') : 0xead3;
+var REACT_LAZY_TYPE = hasSymbol ? Symbol.for('react.lazy') : 0xead4;
+var REACT_BLOCK_TYPE = hasSymbol ? Symbol.for('react.block') : 0xead9;
+var MAYBE_ITERATOR_SYMBOL = typeof Symbol === 'function' && Symbol.iterator;
+var FAUX_ITERATOR_SYMBOL = '@@iterator';
+function getIteratorFn(maybeIterable) {
+  if (maybeIterable === null || typeof maybeIterable !== 'object') {
+    return null;
+  }
+
+  var maybeIterator = MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL];
+
+  if (typeof maybeIterator === 'function') {
+    return maybeIterator;
+  }
+
+  return null;
+}
+
+var Uninitialized = -1;
+var Pending = 0;
+var Resolved = 1;
+var Rejected = 2;
+function refineResolvedLazyComponent(lazyComponent) {
+  return lazyComponent._status === Resolved ? lazyComponent._result : null;
+}
+function initializeLazyComponentType(lazyComponent) {
+  if (lazyComponent._status === Uninitialized) {
+    lazyComponent._status = Pending;
+    var ctor = lazyComponent._ctor;
+    var thenable = ctor();
+    lazyComponent._result = thenable;
+    thenable.then(function (moduleObject) {
+      if (lazyComponent._status === Pending) {
+        var defaultExport = moduleObject.default;
+
+        {
+          if (defaultExport === undefined) {
+            error('lazy: Expected the result of a dynamic import() call. ' + 'Instead received: %s\n\nYour code should look like: \n  ' + "const MyComponent = lazy(() => import('./MyComponent'))", moduleObject);
+          }
+        }
+
+        lazyComponent._status = Resolved;
+        lazyComponent._result = defaultExport;
+      }
+    }, function (error) {
+      if (lazyComponent._status === Pending) {
+        lazyComponent._status = Rejected;
+        lazyComponent._result = error;
+      }
+    });
+  }
+}
+
+function getWrappedName(outerType, innerType, wrapperName) {
+  var functionName = innerType.displayName || innerType.name || '';
+  return outerType.displayName || (functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName);
+}
+
+function getComponentName(type) {
+  if (type == null) {
+    // Host root, text node or just invalid type.
+    return null;
+  }
+
+  {
+    if (typeof type.tag === 'number') {
+      error('Received an unexpected object in getComponentName(). ' + 'This is likely a bug in React. Please file an issue.');
+    }
+  }
+
+  if (typeof type === 'function') {
+    return type.displayName || type.name || null;
+  }
+
+  if (typeof type === 'string') {
+    return type;
+  }
+
+  switch (type) {
+    case REACT_FRAGMENT_TYPE:
+      return 'Fragment';
+
+    case REACT_PORTAL_TYPE:
+      return 'Portal';
+
+    case REACT_PROFILER_TYPE:
+      return "Profiler";
+
+    case REACT_STRICT_MODE_TYPE:
+      return 'StrictMode';
+
+    case REACT_SUSPENSE_TYPE:
+      return 'Suspense';
+
+    case REACT_SUSPENSE_LIST_TYPE:
+      return 'SuspenseList';
+  }
+
+  if (typeof type === 'object') {
+    switch (type.$$typeof) {
+      case REACT_CONTEXT_TYPE:
+        return 'Context.Consumer';
+
+      case REACT_PROVIDER_TYPE:
+        return 'Context.Provider';
+
+      case REACT_FORWARD_REF_TYPE:
+        return getWrappedName(type, type.render, 'ForwardRef');
+
+      case REACT_MEMO_TYPE:
+        return getComponentName(type.type);
+
+      case REACT_BLOCK_TYPE:
+        return getComponentName(type.render);
+
+      case REACT_LAZY_TYPE:
+        {
+          var thenable = type;
+          var resolvedThenable = refineResolvedLazyComponent(thenable);
+
+          if (resolvedThenable) {
+            return getComponentName(resolvedThenable);
+          }
+
+          break;
+        }
+    }
+  }
+
+  return null;
+}
+
+var ReactDebugCurrentFrame$1 = ReactSharedInternals.ReactDebugCurrentFrame;
+
+function describeFiber(fiber) {
+  switch (fiber.tag) {
+    case HostRoot:
+    case HostPortal:
+    case HostText:
+    case Fragment:
+    case ContextProvider:
+    case ContextConsumer:
+      return '';
+
+    default:
+      var owner = fiber._debugOwner;
+      var source = fiber._debugSource;
+      var name = getComponentName(fiber.type);
+      var ownerName = null;
+
+      if (owner) {
+        ownerName = getComponentName(owner.type);
+      }
+
+      return describeComponentFrame(name, source, ownerName);
+  }
+}
+
+function getStackByFiberInDevAndProd(workInProgress) {
+  var info = '';
+  var node = workInProgress;
+
+  do {
+    info += describeFiber(node);
+    node = node.return;
+  } while (node);
+
+  return info;
+}
+var current = null;
+var isRendering = false;
+function getCurrentFiberOwnerNameInDevOrNull() {
+  {
+    if (current === null) {
+      return null;
+    }
+
+    var owner = current._debugOwner;
+
+    if (owner !== null && typeof owner !== 'undefined') {
+      return getComponentName(owner.type);
+    }
+  }
+
+  return null;
+}
+function getCurrentFiberStackInDev() {
+  {
+    if (current === null) {
+      return '';
+    } // Safe because if current fiber exists, we are reconciling,
+    // and it is guaranteed to be the work-in-progress version.
+
+
+    return getStackByFiberInDevAndProd(current);
+  }
+}
+function resetCurrentFiber() {
+  {
+    ReactDebugCurrentFrame$1.getCurrentStack = null;
+    current = null;
+    isRendering = false;
+  }
+}
+function setCurrentFiber(fiber) {
+  {
+    ReactDebugCurrentFrame$1.getCurrentStack = getCurrentFiberStackInDev;
+    current = fiber;
+    isRendering = false;
+  }
+}
+function setIsRendering(rendering) {
+  {
+    isRendering = rendering;
+  }
+}
+
+// Flow does not allow string concatenation of most non-string types. To work
+// around this limitation, we use an opaque type that can only be obtained by
+// passing the value through getToStringValue first.
+function toString(value) {
+  return '' + value;
+}
+function getToStringValue(value) {
+  switch (typeof value) {
+    case 'boolean':
+    case 'number':
+    case 'object':
+    case 'string':
+    case 'undefined':
+      return value;
+
+    default:
+      // function, symbol are assigned as empty strings
+      return '';
+  }
+}
+
+var ReactDebugCurrentFrame$2 = null;
+var ReactControlledValuePropTypes = {
+  checkPropTypes: null
+};
+
+{
+  ReactDebugCurrentFrame$2 = ReactSharedInternals.ReactDebugCurrentFrame;
+  var hasReadOnlyValue = {
+    button: true,
+    checkbox: true,
+    image: true,
+    hidden: true,
+    radio: true,
+    reset: true,
+    submit: true
+  };
+  var propTypes = {
+    value: function (props, propName, componentName) {
+      if (hasReadOnlyValue[props.type] || props.onChange || props.readOnly || props.disabled || props[propName] == null || enableDeprecatedFlareAPI ) {
+        return null;
+      }
+
+      return new Error('You provided a `value` prop to a form field without an ' + '`onChange` handler. This will render a read-only field. If ' + 'the field should be mutable use `defaultValue`. Otherwise, ' + 'set either `onChange` or `readOnly`.');
+    },
+    checked: function (props, propName, componentName) {
+      if (props.onChange || props.readOnly || props.disabled || props[propName] == null || enableDeprecatedFlareAPI ) {
+        return null;
+      }
+
+      return new Error('You provided a `checked` prop to a form field without an ' + '`onChange` handler. This will render a read-only field. If ' + 'the field should be mutable use `defaultChecked`. Otherwise, ' + 'set either `onChange` or `readOnly`.');
+    }
+  };
+  /**
+   * Provide a linked `value` attribute for controlled forms. You should not use
+   * this outside of the ReactDOM controlled form components.
+   */
+
+  ReactControlledValuePropTypes.checkPropTypes = function (tagName, props) {
+    checkPropTypes(propTypes, props, 'prop', tagName, ReactDebugCurrentFrame$2.getStackAddendum);
+  };
+}
+
+function isCheckable(elem) {
+  var type = elem.type;
+  var nodeName = elem.nodeName;
+  return nodeName && nodeName.toLowerCase() === 'input' && (type === 'checkbox' || type === 'radio');
+}
+
+function getTracker(node) {
+  return node._valueTracker;
+}
+
+function detachTracker(node) {
+  node._valueTracker = null;
+}
+
+function getValueFromNode(node) {
+  var value = '';
+
+  if (!node) {
+    return value;
+  }
+
+  if (isCheckable(node)) {
+    value = node.checked ? 'true' : 'false';
+  } else {
+    value = node.value;
+  }
+
+  return value;
+}
+
+function trackValueOnNode(node) {
+  var valueField = isCheckable(node) ? 'checked' : 'value';
+  var descriptor = Object.getOwnPropertyDescriptor(node.constructor.prototype, valueField);
+  var currentValue = '' + node[valueField]; // if someone has already defined a value or Safari, then bail
+  // and don't track value will cause over reporting of changes,
+  // but it's better then a hard failure
+  // (needed for certain tests that spyOn input values and Safari)
+
+  if (node.hasOwnProperty(valueField) || typeof descriptor === 'undefined' || typeof descriptor.get !== 'function' || typeof descriptor.set !== 'function') {
+    return;
+  }
+
+  var get = descriptor.get,
+      set = descriptor.set;
+  Object.defineProperty(node, valueField, {
+    configurable: true,
+    get: function () {
+      return get.call(this);
+    },
+    set: function (value) {
+      currentValue = '' + value;
+      set.call(this, value);
+    }
+  }); // We could've passed this the first time
+  // but it triggers a bug in IE11 and Edge 14/15.
+  // Calling defineProperty() again should be equivalent.
+  // https://github.com/facebook/react/issues/11768
+
+  Object.defineProperty(node, valueField, {
+    enumerable: descriptor.enumerable
+  });
+  var tracker = {
+    getValue: function () {
+      return currentValue;
+    },
+    setValue: function (value) {
+      currentValue = '' + value;
+    },
+    stopTracking: function () {
+      detachTracker(node);
+      delete node[valueField];
+    }
+  };
+  return tracker;
+}
+
+function track(node) {
+  if (getTracker(node)) {
+    return;
+  } // TODO: Once it's just Fiber we can move this to node._wrapperState
+
+
+  node._valueTracker = trackValueOnNode(node);
+}
+function updateValueIfChanged(node) {
+  if (!node) {
+    return false;
+  }
+
+  var tracker = getTracker(node); // if there is no tracker at this point it's unlikely
+  // that trying again will succeed
+
+  if (!tracker) {
+    return true;
+  }
+
+  var lastValue = tracker.getValue();
+  var nextValue = getValueFromNode(node);
+
+  if (nextValue !== lastValue) {
+    tracker.setValue(nextValue);
+    return true;
+  }
+
+  return false;
+}
+
+var didWarnValueDefaultValue = false;
+var didWarnCheckedDefaultChecked = false;
+var didWarnControlledToUncontrolled = false;
+var didWarnUncontrolledToControlled = false;
+
+function isControlled(props) {
+  var usesChecked = props.type === 'checkbox' || props.type === 'radio';
+  return usesChecked ? props.checked != null : props.value != null;
+}
+/**
+ * Implements an <input> host component that allows setting these optional
+ * props: `checked`, `value`, `defaultChecked`, and `defaultValue`.
+ *
+ * If `checked` or `value` are not supplied (or null/undefined), user actions
+ * that affect the checked state or value will trigger updates to the element.
+ *
+ * If they are supplied (and not null/undefined), the rendered element will not
+ * trigger updates to the element. Instead, the props must change in order for
+ * the rendered element to be updated.
+ *
+ * The rendered element will be initialized as unchecked (or `defaultChecked`)
+ * with an empty value (or `defaultValue`).
+ *
+ * See http://www.w3.org/TR/2012/WD-html5-20121025/the-input-element.html
+ */
+
+
+function getHostProps(element, props) {
+  var node = element;
+  var checked = props.checked;
+
+  var hostProps = _assign({}, props, {
+    defaultChecked: undefined,
+    defaultValue: undefined,
+    value: undefined,
+    checked: checked != null ? checked : node._wrapperState.initialChecked
+  });
+
+  return hostProps;
+}
+function initWrapperState(element, props) {
+  {
+    ReactControlledValuePropTypes.checkPropTypes('input', props);
+
+    if (props.checked !== undefined && props.defaultChecked !== undefined && !didWarnCheckedDefaultChecked) {
+      error('%s contains an input of type %s with both checked and defaultChecked props. ' + 'Input elements must be either controlled or uncontrolled ' + '(specify either the checked prop, or the defaultChecked prop, but not ' + 'both). Decide between using a controlled or uncontrolled input ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components', getCurrentFiberOwnerNameInDevOrNull() || 'A component', props.type);
+
+      didWarnCheckedDefaultChecked = true;
+    }
+
+    if (props.value !== undefined && props.defaultValue !== undefined && !didWarnValueDefaultValue) {
+      error('%s contains an input of type %s with both value and defaultValue props. ' + 'Input elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled input ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components', getCurrentFiberOwnerNameInDevOrNull() || 'A component', props.type);
+
+      didWarnValueDefaultValue = true;
+    }
+  }
+
+  var node = element;
+  var defaultValue = props.defaultValue == null ? '' : props.defaultValue;
+  node._wrapperState = {
+    initialChecked: props.checked != null ? props.checked : props.defaultChecked,
+    initialValue: getToStringValue(props.value != null ? props.value : defaultValue),
+    controlled: isControlled(props)
+  };
+}
+function updateChecked(element, props) {
+  var node = element;
+  var checked = props.checked;
+
+  if (checked != null) {
+    setValueForProperty(node, 'checked', checked, false);
+  }
+}
+function updateWrapper(element, props) {
+  var node = element;
+
+  {
+    var controlled = isControlled(props);
+
+    if (!node._wrapperState.controlled && controlled && !didWarnUncontrolledToControlled) {
+      error('A component is changing an uncontrolled input of type %s to be controlled. ' + 'Input elements should not switch from uncontrolled to controlled (or vice versa). ' + 'Decide between using a controlled or uncontrolled input ' + 'element for the lifetime of the component. More info: https://fb.me/react-controlled-components', props.type);
+
+      didWarnUncontrolledToControlled = true;
+    }
+
+    if (node._wrapperState.controlled && !controlled && !didWarnControlledToUncontrolled) {
+      error('A component is changing a controlled input of type %s to be uncontrolled. ' + 'Input elements should not switch from controlled to uncontrolled (or vice versa). ' + 'Decide between using a controlled or uncontrolled input ' + 'element for the lifetime of the component. More info: https://fb.me/react-controlled-components', props.type);
+
+      didWarnControlledToUncontrolled = true;
+    }
+  }
+
+  updateChecked(element, props);
+  var value = getToStringValue(props.value);
+  var type = props.type;
+
+  if (value != null) {
+    if (type === 'number') {
+      if (value === 0 && node.value === '' || // We explicitly want to coerce to number here if possible.
+      // eslint-disable-next-line
+      node.value != value) {
+        node.value = toString(value);
+      }
+    } else if (node.value !== toString(value)) {
+      node.value = toString(value);
+    }
+  } else if (type === 'submit' || type === 'reset') {
+    // Submit/reset inputs need the attribute removed completely to avoid
+    // blank-text buttons.
+    node.removeAttribute('value');
+    return;
+  }
+
+  {
+    // When syncing the value attribute, the value comes from a cascade of
+    // properties:
+    //  1. The value React property
+    //  2. The defaultValue React property
+    //  3. Otherwise there should be no change
+    if (props.hasOwnProperty('value')) {
+      setDefaultValue(node, props.type, value);
+    } else if (props.hasOwnProperty('defaultValue')) {
+      setDefaultValue(node, props.type, getToStringValue(props.defaultValue));
+    }
+  }
+
+  {
+    // When syncing the checked attribute, it only changes when it needs
+    // to be removed, such as transitioning from a checkbox into a text input
+    if (props.checked == null && props.defaultChecked != null) {
+      node.defaultChecked = !!props.defaultChecked;
+    }
+  }
+}
+function postMountWrapper(element, props, isHydrating) {
+  var node = element; // Do not assign value if it is already set. This prevents user text input
+  // from being lost during SSR hydration.
+
+  if (props.hasOwnProperty('value') || props.hasOwnProperty('defaultValue')) {
+    var type = props.type;
+    var isButton = type === 'submit' || type === 'reset'; // Avoid setting value attribute on submit/reset inputs as it overrides the
+    // default value provided by the browser. See: #12872
+
+    if (isButton && (props.value === undefined || props.value === null)) {
+      return;
+    }
+
+    var initialValue = toString(node._wrapperState.initialValue); // Do not assign value if it is already set. This prevents user text input
+    // from being lost during SSR hydration.
+
+    if (!isHydrating) {
+      {
+        // When syncing the value attribute, the value property should use
+        // the wrapperState._initialValue property. This uses:
+        //
+        //   1. The value React property when present
+        //   2. The defaultValue React property when present
+        //   3. An empty string
+        if (initialValue !== node.value) {
+          node.value = initialValue;
+        }
+      }
+    }
+
+    {
+      // Otherwise, the value attribute is synchronized to the property,
+      // so we assign defaultValue to the same thing as the value property
+      // assignment step above.
+      node.defaultValue = initialValue;
+    }
+  } // Normally, we'd just do `node.checked = node.checked` upon initial mount, less this bug
+  // this is needed to work around a chrome bug where setting defaultChecked
+  // will sometimes influence the value of checked (even after detachment).
+  // Reference: https://bugs.chromium.org/p/chromium/issues/detail?id=608416
+  // We need to temporarily unset name to avoid disrupting radio button groups.
+
+
+  var name = node.name;
+
+  if (name !== '') {
+    node.name = '';
+  }
+
+  {
+    // When syncing the checked attribute, both the checked property and
+    // attribute are assigned at the same time using defaultChecked. This uses:
+    //
+    //   1. The checked React property when present
+    //   2. The defaultChecked React property when present
+    //   3. Otherwise, false
+    node.defaultChecked = !node.defaultChecked;
+    node.defaultChecked = !!node._wrapperState.initialChecked;
+  }
+
+  if (name !== '') {
+    node.name = name;
+  }
+}
+function restoreControlledState(element, props) {
+  var node = element;
+  updateWrapper(node, props);
+  updateNamedCousins(node, props);
+}
+
+function updateNamedCousins(rootNode, props) {
+  var name = props.name;
+
+  if (props.type === 'radio' && name != null) {
+    var queryRoot = rootNode;
+
+    while (queryRoot.parentNode) {
+      queryRoot = queryRoot.parentNode;
+    } // If `rootNode.form` was non-null, then we could try `form.elements`,
+    // but that sometimes behaves strangely in IE8. We could also try using
+    // `form.getElementsByName`, but that will only return direct children
+    // and won't include inputs that use the HTML5 `form=` attribute. Since
+    // the input might not even be in a form. It might not even be in the
+    // document. Let's just use the local `querySelectorAll` to ensure we don't
+    // miss anything.
+
+
+    var group = queryRoot.querySelectorAll('input[name=' + JSON.stringify('' + name) + '][type="radio"]');
+
+    for (var i = 0; i < group.length; i++) {
+      var otherNode = group[i];
+
+      if (otherNode === rootNode || otherNode.form !== rootNode.form) {
+        continue;
+      } // This will throw if radio buttons rendered by different copies of React
+      // and the same name are rendered into the same form (same as #1939).
+      // That's probably okay; we don't support it just as we don't support
+      // mixing React radio buttons with non-React ones.
+
+
+      var otherProps = getFiberCurrentPropsFromNode$1(otherNode);
+
+      if (!otherProps) {
+        {
+          throw Error( "ReactDOMInput: Mixing React and non-React radio inputs with the same `name` is not supported." );
+        }
+      } // We need update the tracked value on the named cousin since the value
+      // was changed but the input saw no event or value set
+
+
+      updateValueIfChanged(otherNode); // If this is a controlled radio button group, forcing the input that
+      // was previously checked to update will cause it to be come re-checked
+      // as appropriate.
+
+      updateWrapper(otherNode, otherProps);
+    }
+  }
+} // In Chrome, assigning defaultValue to certain input types triggers input validation.
+// For number inputs, the display value loses trailing decimal points. For email inputs,
+// Chrome raises "The specified value <x> is not a valid email address".
+//
+// Here we check to see if the defaultValue has actually changed, avoiding these problems
+// when the user is inputting text
+//
+// https://github.com/facebook/react/issues/7253
+
+
+function setDefaultValue(node, type, value) {
+  if ( // Focused number inputs synchronize on blur. See ChangeEventPlugin.js
+  type !== 'number' || node.ownerDocument.activeElement !== node) {
+    if (value == null) {
+      node.defaultValue = toString(node._wrapperState.initialValue);
+    } else if (node.defaultValue !== toString(value)) {
+      node.defaultValue = toString(value);
+    }
+  }
+}
+
+var didWarnSelectedSetOnOption = false;
+var didWarnInvalidChild = false;
+
+function flattenChildren(children) {
+  var content = ''; // Flatten children. We'll warn if they are invalid
+  // during validateProps() which runs for hydration too.
+  // Note that this would throw on non-element objects.
+  // Elements are stringified (which is normally irrelevant
+  // but matters for <fbt>).
+
+  React.Children.forEach(children, function (child) {
+    if (child == null) {
+      return;
+    }
+
+    content += child; // Note: we don't warn about invalid children here.
+    // Instead, this is done separately below so that
+    // it happens during the hydration codepath too.
+  });
+  return content;
+}
+/**
+ * Implements an <option> host component that warns when `selected` is set.
+ */
+
+
+function validateProps(element, props) {
+  {
+    // This mirrors the codepath above, but runs for hydration too.
+    // Warn about invalid children here so that client and hydration are consistent.
+    // TODO: this seems like it could cause a DEV-only throw for hydration
+    // if children contains a non-element object. We should try to avoid that.
+    if (typeof props.children === 'object' && props.children !== null) {
+      React.Children.forEach(props.children, function (child) {
+        if (child == null) {
+          return;
+        }
+
+        if (typeof child === 'string' || typeof child === 'number') {
+          return;
+        }
+
+        if (typeof child.type !== 'string') {
+          return;
+        }
+
+        if (!didWarnInvalidChild) {
+          didWarnInvalidChild = true;
+
+          error('Only strings and numbers are supported as <option> children.');
+        }
+      });
+    } // TODO: Remove support for `selected` in <option>.
+
+
+    if (props.selected != null && !didWarnSelectedSetOnOption) {
+      error('Use the `defaultValue` or `value` props on <select> instead of ' + 'setting `selected` on <option>.');
+
+      didWarnSelectedSetOnOption = true;
+    }
+  }
+}
+function postMountWrapper$1(element, props) {
+  // value="" should make a value attribute (#6219)
+  if (props.value != null) {
+    element.setAttribute('value', toString(getToStringValue(props.value)));
+  }
+}
+function getHostProps$1(element, props) {
+  var hostProps = _assign({
+    children: undefined
+  }, props);
+
+  var content = flattenChildren(props.children);
+
+  if (content) {
+    hostProps.children = content;
+  }
+
+  return hostProps;
+}
+
+var didWarnValueDefaultValue$1;
+
+{
+  didWarnValueDefaultValue$1 = false;
+}
+
+function getDeclarationErrorAddendum() {
+  var ownerName = getCurrentFiberOwnerNameInDevOrNull();
+
+  if (ownerName) {
+    return '\n\nCheck the render method of `' + ownerName + '`.';
+  }
+
+  return '';
+}
+
+var valuePropNames = ['value', 'defaultValue'];
+/**
+ * Validation function for `value` and `defaultValue`.
+ */
+
+function checkSelectPropTypes(props) {
+  {
+    ReactControlledValuePropTypes.checkPropTypes('select', props);
+
+    for (var i = 0; i < valuePropNames.length; i++) {
+      var propName = valuePropNames[i];
+
+      if (props[propName] == null) {
+        continue;
+      }
+
+      var isArray = Array.isArray(props[propName]);
+
+      if (props.multiple && !isArray) {
+        error('The `%s` prop supplied to <select> must be an array if ' + '`multiple` is true.%s', propName, getDeclarationErrorAddendum());
+      } else if (!props.multiple && isArray) {
+        error('The `%s` prop supplied to <select> must be a scalar ' + 'value if `multiple` is false.%s', propName, getDeclarationErrorAddendum());
+      }
+    }
+  }
+}
+
+function updateOptions(node, multiple, propValue, setDefaultSelected) {
+  var options = node.options;
+
+  if (multiple) {
+    var selectedValues = propValue;
+    var selectedValue = {};
+
+    for (var i = 0; i < selectedValues.length; i++) {
+      // Prefix to avoid chaos with special keys.
+      selectedValue['$' + selectedValues[i]] = true;
+    }
+
+    for (var _i = 0; _i < options.length; _i++) {
+      var selected = selectedValue.hasOwnProperty('$' + options[_i].value);
+
+      if (options[_i].selected !== selected) {
+        options[_i].selected = selected;
+      }
+
+      if (selected && setDefaultSelected) {
+        options[_i].defaultSelected = true;
+      }
+    }
+  } else {
+    // Do not set `select.value` as exact behavior isn't consistent across all
+    // browsers for all cases.
+    var _selectedValue = toString(getToStringValue(propValue));
+
+    var defaultSelected = null;
+
+    for (var _i2 = 0; _i2 < options.length; _i2++) {
+      if (options[_i2].value === _selectedValue) {
+        options[_i2].selected = true;
+
+        if (setDefaultSelected) {
+          options[_i2].defaultSelected = true;
+        }
+
+        return;
+      }
+
+      if (defaultSelected === null && !options[_i2].disabled) {
+        defaultSelected = options[_i2];
+      }
+    }
+
+    if (defaultSelected !== null) {
+      defaultSelected.selected = true;
+    }
+  }
+}
+/**
+ * Implements a <select> host component that allows optionally setting the
+ * props `value` and `defaultValue`. If `multiple` is false, the prop must be a
+ * stringable. If `multiple` is true, the prop must be an array of stringables.
+ *
+ * If `value` is not supplied (or null/undefined), user actions that change the
+ * selected option will trigger updates to the rendered options.
+ *
+ * If it is supplied (and not null/undefined), the rendered options will not
+ * update in response to user actions. Instead, the `value` prop must change in
+ * order for the rendered options to update.
+ *
+ * If `defaultValue` is provided, any options with the supplied values will be
+ * selected.
+ */
+
+
+function getHostProps$2(element, props) {
+  return _assign({}, props, {
+    value: undefined
+  });
+}
+function initWrapperState$1(element, props) {
+  var node = element;
+
+  {
+    checkSelectPropTypes(props);
+  }
+
+  node._wrapperState = {
+    wasMultiple: !!props.multiple
+  };
+
+  {
+    if (props.value !== undefined && props.defaultValue !== undefined && !didWarnValueDefaultValue$1) {
+      error('Select elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled select ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components');
+
+      didWarnValueDefaultValue$1 = true;
+    }
+  }
+}
+function postMountWrapper$2(element, props) {
+  var node = element;
+  node.multiple = !!props.multiple;
+  var value = props.value;
+
+  if (value != null) {
+    updateOptions(node, !!props.multiple, value, false);
+  } else if (props.defaultValue != null) {
+    updateOptions(node, !!props.multiple, props.defaultValue, true);
+  }
+}
+function postUpdateWrapper(element, props) {
+  var node = element;
+  var wasMultiple = node._wrapperState.wasMultiple;
+  node._wrapperState.wasMultiple = !!props.multiple;
+  var value = props.value;
+
+  if (value != null) {
+    updateOptions(node, !!props.multiple, value, false);
+  } else if (wasMultiple !== !!props.multiple) {
+    // For simplicity, reapply `defaultValue` if `multiple` is toggled.
+    if (props.defaultValue != null) {
+      updateOptions(node, !!props.multiple, props.defaultValue, true);
+    } else {
+      // Revert the select back to its default unselected state.
+      updateOptions(node, !!props.multiple, props.multiple ? [] : '', false);
+    }
+  }
+}
+function restoreControlledState$1(element, props) {
+  var node = element;
+  var value = props.value;
+
+  if (value != null) {
+    updateOptions(node, !!props.multiple, value, false);
+  }
+}
+
+var didWarnValDefaultVal = false;
+
+/**
+ * Implements a <textarea> host component that allows setting `value`, and
+ * `defaultValue`. This differs from the traditional DOM API because value is
+ * usually set as PCDATA children.
+ *
+ * If `value` is not supplied (or null/undefined), user actions that affect the
+ * value will trigger updates to the element.
+ *
+ * If `value` is supplied (and not null/undefined), the rendered element will
+ * not trigger updates to the element. Instead, the `value` prop must change in
+ * order for the rendered element to be updated.
+ *
+ * The rendered element will be initialized with an empty value, the prop
+ * `defaultValue` if specified, or the children content (deprecated).
+ */
+function getHostProps$3(element, props) {
+  var node = element;
+
+  if (!(props.dangerouslySetInnerHTML == null)) {
+    {
+      throw Error( "`dangerouslySetInnerHTML` does not make sense on <textarea>." );
+    }
+  } // Always set children to the same thing. In IE9, the selection range will
+  // get reset if `textContent` is mutated.  We could add a check in setTextContent
+  // to only set the value if/when the value differs from the node value (which would
+  // completely solve this IE9 bug), but Sebastian+Sophie seemed to like this
+  // solution. The value can be a boolean or object so that's why it's forced
+  // to be a string.
+
+
+  var hostProps = _assign({}, props, {
+    value: undefined,
+    defaultValue: undefined,
+    children: toString(node._wrapperState.initialValue)
+  });
+
+  return hostProps;
+}
+function initWrapperState$2(element, props) {
+  var node = element;
+
+  {
+    ReactControlledValuePropTypes.checkPropTypes('textarea', props);
+
+    if (props.value !== undefined && props.defaultValue !== undefined && !didWarnValDefaultVal) {
+      error('%s contains a textarea with both value and defaultValue props. ' + 'Textarea elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled textarea ' + 'and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components', getCurrentFiberOwnerNameInDevOrNull() || 'A component');
+
+      didWarnValDefaultVal = true;
+    }
+  }
+
+  var initialValue = props.value; // Only bother fetching default value if we're going to use it
+
+  if (initialValue == null) {
+    var children = props.children,
+        defaultValue = props.defaultValue;
+
+    if (children != null) {
+      {
+        error('Use the `defaultValue` or `value` props instead of setting ' + 'children on <textarea>.');
+      }
+
+      {
+        if (!(defaultValue == null)) {
+          {
+            throw Error( "If you supply `defaultValue` on a <textarea>, do not pass children." );
+          }
+        }
+
+        if (Array.isArray(children)) {
+          if (!(children.length <= 1)) {
+            {
+              throw Error( "<textarea> can only have at most one child." );
+            }
+          }
+
+          children = children[0];
+        }
+
+        defaultValue = children;
+      }
+    }
+
+    if (defaultValue == null) {
+      defaultValue = '';
+    }
+
+    initialValue = defaultValue;
+  }
+
+  node._wrapperState = {
+    initialValue: getToStringValue(initialValue)
+  };
+}
+function updateWrapper$1(element, props) {
+  var node = element;
+  var value = getToStringValue(props.value);
+  var defaultValue = getToStringValue(props.defaultValue);
+
+  if (value != null) {
+    // Cast `value` to a string to ensure the value is set correctly. While
+    // browsers typically do this as necessary, jsdom doesn't.
+    var newValue = toString(value); // To avoid side effects (such as losing text selection), only set value if changed
+
+    if (newValue !== node.value) {
+      node.value = newValue;
+    }
+
+    if (props.defaultValue == null && node.defaultValue !== newValue) {
+      node.defaultValue = newValue;
+    }
+  }
+
+  if (defaultValue != null) {
+    node.defaultValue = toString(defaultValue);
+  }
+}
+function postMountWrapper$3(element, props) {
+  var node = element; // This is in postMount because we need access to the DOM node, which is not
+  // available until after the component has mounted.
+
+  var textContent = node.textContent; // Only set node.value if textContent is equal to the expected
+  // initial value. In IE10/IE11 there is a bug where the placeholder attribute
+  // will populate textContent as well.
+  // https://developer.microsoft.com/microsoft-edge/platform/issues/101525/
+
+  if (textContent === node._wrapperState.initialValue) {
+    if (textContent !== '' && textContent !== null) {
+      node.value = textContent;
+    }
+  }
+}
+function restoreControlledState$2(element, props) {
+  // DOM component is still mounted; update
+  updateWrapper$1(element, props);
+}
+
+var HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';
+var MATH_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';
+var SVG_NAMESPACE = 'http://www.w3.org/2000/svg';
+var Namespaces = {
+  html: HTML_NAMESPACE,
+  mathml: MATH_NAMESPACE,
+  svg: SVG_NAMESPACE
+}; // Assumes there is no parent namespace.
+
+function getIntrinsicNamespace(type) {
+  switch (type) {
+    case 'svg':
+      return SVG_NAMESPACE;
+
+    case 'math':
+      return MATH_NAMESPACE;
+
+    default:
+      return HTML_NAMESPACE;
+  }
+}
+function getChildNamespace(parentNamespace, type) {
+  if (parentNamespace == null || parentNamespace === HTML_NAMESPACE) {
+    // No (or default) parent namespace: potential entry point.
+    return getIntrinsicNamespace(type);
+  }
+
+  if (parentNamespace === SVG_NAMESPACE && type === 'foreignObject') {
+    // We're leaving SVG.
+    return HTML_NAMESPACE;
+  } // By default, pass namespace below.
+
+
+  return parentNamespace;
+}
+
+/* globals MSApp */
+
+/**
+ * Create a function which has 'unsafe' privileges (required by windows8 apps)
+ */
+var createMicrosoftUnsafeLocalFunction = function (func) {
+  if (typeof MSApp !== 'undefined' && MSApp.execUnsafeLocalFunction) {
+    return function (arg0, arg1, arg2, arg3) {
+      MSApp.execUnsafeLocalFunction(function () {
+        return func(arg0, arg1, arg2, arg3);
+      });
+    };
+  } else {
+    return func;
+  }
+};
+
+var reusableSVGContainer;
+/**
+ * Set the innerHTML property of a node
+ *
+ * @param {DOMElement} node
+ * @param {string} html
+ * @internal
+ */
+
+var setInnerHTML = createMicrosoftUnsafeLocalFunction(function (node, html) {
+  if (node.namespaceURI === Namespaces.svg) {
+
+    if (!('innerHTML' in node)) {
+      // IE does not have innerHTML for SVG nodes, so instead we inject the
+      // new markup in a temp node and then move the child nodes across into
+      // the target node
+      reusableSVGContainer = reusableSVGContainer || document.createElement('div');
+      reusableSVGContainer.innerHTML = '<svg>' + html.valueOf().toString() + '</svg>';
+      var svgNode = reusableSVGContainer.firstChild;
+
+      while (node.firstChild) {
+        node.removeChild(node.firstChild);
+      }
+
+      while (svgNode.firstChild) {
+        node.appendChild(svgNode.firstChild);
+      }
+
+      return;
+    }
+  }
+
+  node.innerHTML = html;
+});
+
+/**
+ * HTML nodeType values that represent the type of the node
+ */
+var ELEMENT_NODE = 1;
+var TEXT_NODE = 3;
+var COMMENT_NODE = 8;
+var DOCUMENT_NODE = 9;
+var DOCUMENT_FRAGMENT_NODE = 11;
+
+/**
+ * Set the textContent property of a node. For text updates, it's faster
+ * to set the `nodeValue` of the Text node directly instead of using
+ * `.textContent` which will remove the existing node and create a new one.
+ *
+ * @param {DOMElement} node
+ * @param {string} text
+ * @internal
+ */
+
+var setTextContent = function (node, text) {
+  if (text) {
+    var firstChild = node.firstChild;
+
+    if (firstChild && firstChild === node.lastChild && firstChild.nodeType === TEXT_NODE) {
+      firstChild.nodeValue = text;
+      return;
+    }
+  }
+
+  node.textContent = text;
+};
+
+// Do not use the below two methods directly!
+// Instead use constants exported from DOMTopLevelEventTypes in ReactDOM.
+// (It is the only module that is allowed to access these methods.)
+function unsafeCastStringToDOMTopLevelType(topLevelType) {
+  return topLevelType;
+}
+function unsafeCastDOMTopLevelTypeToString(topLevelType) {
+  return topLevelType;
+}
+
+/**
+ * Generate a mapping of standard vendor prefixes using the defined style property and event name.
+ *
+ * @param {string} styleProp
+ * @param {string} eventName
+ * @returns {object}
+ */
+
+function makePrefixMap(styleProp, eventName) {
+  var prefixes = {};
+  prefixes[styleProp.toLowerCase()] = eventName.toLowerCase();
+  prefixes['Webkit' + styleProp] = 'webkit' + eventName;
+  prefixes['Moz' + styleProp] = 'moz' + eventName;
+  return prefixes;
+}
+/**
+ * A list of event names to a configurable list of vendor prefixes.
+ */
+
+
+var vendorPrefixes = {
+  animationend: makePrefixMap('Animation', 'AnimationEnd'),
+  animationiteration: makePrefixMap('Animation', 'AnimationIteration'),
+  animationstart: makePrefixMap('Animation', 'AnimationStart'),
+  transitionend: makePrefixMap('Transition', 'TransitionEnd')
+};
+/**
+ * Event names that have already been detected and prefixed (if applicable).
+ */
+
+var prefixedEventNames = {};
+/**
+ * Element to check for prefixes on.
+ */
+
+var style = {};
+/**
+ * Bootstrap if a DOM exists.
+ */
+
+if (canUseDOM) {
+  style = document.createElement('div').style; // On some platforms, in particular some releases of Android 4.x,
+  // the un-prefixed "animation" and "transition" properties are defined on the
+  // style object but the events that fire will still be prefixed, so we need
+  // to check if the un-prefixed events are usable, and if not remove them from the map.
+
+  if (!('AnimationEvent' in window)) {
+    delete vendorPrefixes.animationend.animation;
+    delete vendorPrefixes.animationiteration.animation;
+    delete vendorPrefixes.animationstart.animation;
+  } // Same as above
+
+
+  if (!('TransitionEvent' in window)) {
+    delete vendorPrefixes.transitionend.transition;
+  }
+}
+/**
+ * Attempts to determine the correct vendor prefixed event name.
+ *
+ * @param {string} eventName
+ * @returns {string}
+ */
+
+
+function getVendorPrefixedEventName(eventName) {
+  if (prefixedEventNames[eventName]) {
+    return prefixedEventNames[eventName];
+  } else if (!vendorPrefixes[eventName]) {
+    return eventName;
+  }
+
+  var prefixMap = vendorPrefixes[eventName];
+
+  for (var styleProp in prefixMap) {
+    if (prefixMap.hasOwnProperty(styleProp) && styleProp in style) {
+      return prefixedEventNames[eventName] = prefixMap[styleProp];
+    }
+  }
+
+  return eventName;
+}
+
+/**
+ * To identify top level events in ReactDOM, we use constants defined by this
+ * module. This is the only module that uses the unsafe* methods to express
+ * that the constants actually correspond to the browser event names. This lets
+ * us save some bundle size by avoiding a top level type -> event name map.
+ * The rest of ReactDOM code should import top level types from this file.
+ */
+
+var TOP_ABORT = unsafeCastStringToDOMTopLevelType('abort');
+var TOP_ANIMATION_END = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationend'));
+var TOP_ANIMATION_ITERATION = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationiteration'));
+var TOP_ANIMATION_START = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationstart'));
+var TOP_BLUR = unsafeCastStringToDOMTopLevelType('blur');
+var TOP_CAN_PLAY = unsafeCastStringToDOMTopLevelType('canplay');
+var TOP_CAN_PLAY_THROUGH = unsafeCastStringToDOMTopLevelType('canplaythrough');
+var TOP_CANCEL = unsafeCastStringToDOMTopLevelType('cancel');
+var TOP_CHANGE = unsafeCastStringToDOMTopLevelType('change');
+var TOP_CLICK = unsafeCastStringToDOMTopLevelType('click');
+var TOP_CLOSE = unsafeCastStringToDOMTopLevelType('close');
+var TOP_COMPOSITION_END = unsafeCastStringToDOMTopLevelType('compositionend');
+var TOP_COMPOSITION_START = unsafeCastStringToDOMTopLevelType('compositionstart');
+var TOP_COMPOSITION_UPDATE = unsafeCastStringToDOMTopLevelType('compositionupdate');
+var TOP_CONTEXT_MENU = unsafeCastStringToDOMTopLevelType('contextmenu');
+var TOP_COPY = unsafeCastStringToDOMTopLevelType('copy');
+var TOP_CUT = unsafeCastStringToDOMTopLevelType('cut');
+var TOP_DOUBLE_CLICK = unsafeCastStringToDOMTopLevelType('dblclick');
+var TOP_AUX_CLICK = unsafeCastStringToDOMTopLevelType('auxclick');
+var TOP_DRAG = unsafeCastStringToDOMTopLevelType('drag');
+var TOP_DRAG_END = unsafeCastStringToDOMTopLevelType('dragend');
+var TOP_DRAG_ENTER = unsafeCastStringToDOMTopLevelType('dragenter');
+var TOP_DRAG_EXIT = unsafeCastStringToDOMTopLevelType('dragexit');
+var TOP_DRAG_LEAVE = unsafeCastStringToDOMTopLevelType('dragleave');
+var TOP_DRAG_OVER = unsafeCastStringToDOMTopLevelType('dragover');
+var TOP_DRAG_START = unsafeCastStringToDOMTopLevelType('dragstart');
+var TOP_DROP = unsafeCastStringToDOMTopLevelType('drop');
+var TOP_DURATION_CHANGE = unsafeCastStringToDOMTopLevelType('durationchange');
+var TOP_EMPTIED = unsafeCastStringToDOMTopLevelType('emptied');
+var TOP_ENCRYPTED = unsafeCastStringToDOMTopLevelType('encrypted');
+var TOP_ENDED = unsafeCastStringToDOMTopLevelType('ended');
+var TOP_ERROR = unsafeCastStringToDOMTopLevelType('error');
+var TOP_FOCUS = unsafeCastStringToDOMTopLevelType('focus');
+var TOP_GOT_POINTER_CAPTURE = unsafeCastStringToDOMTopLevelType('gotpointercapture');
+var TOP_INPUT = unsafeCastStringToDOMTopLevelType('input');
+var TOP_INVALID = unsafeCastStringToDOMTopLevelType('invalid');
+var TOP_KEY_DOWN = unsafeCastStringToDOMTopLevelType('keydown');
+var TOP_KEY_PRESS = unsafeCastStringToDOMTopLevelType('keypress');
+var TOP_KEY_UP = unsafeCastStringToDOMTopLevelType('keyup');
+var TOP_LOAD = unsafeCastStringToDOMTopLevelType('load');
+var TOP_LOAD_START = unsafeCastStringToDOMTopLevelType('loadstart');
+var TOP_LOADED_DATA = unsafeCastStringToDOMTopLevelType('loadeddata');
+var TOP_LOADED_METADATA = unsafeCastStringToDOMTopLevelType('loadedmetadata');
+var TOP_LOST_POINTER_CAPTURE = unsafeCastStringToDOMTopLevelType('lostpointercapture');
+var TOP_MOUSE_DOWN = unsafeCastStringToDOMTopLevelType('mousedown');
+var TOP_MOUSE_MOVE = unsafeCastStringToDOMTopLevelType('mousemove');
+var TOP_MOUSE_OUT = unsafeCastStringToDOMTopLevelType('mouseout');
+var TOP_MOUSE_OVER = unsafeCastStringToDOMTopLevelType('mouseover');
+var TOP_MOUSE_UP = unsafeCastStringToDOMTopLevelType('mouseup');
+var TOP_PASTE = unsafeCastStringToDOMTopLevelType('paste');
+var TOP_PAUSE = unsafeCastStringToDOMTopLevelType('pause');
+var TOP_PLAY = unsafeCastStringToDOMTopLevelType('play');
+var TOP_PLAYING = unsafeCastStringToDOMTopLevelType('playing');
+var TOP_POINTER_CANCEL = unsafeCastStringToDOMTopLevelType('pointercancel');
+var TOP_POINTER_DOWN = unsafeCastStringToDOMTopLevelType('pointerdown');
+var TOP_POINTER_MOVE = unsafeCastStringToDOMTopLevelType('pointermove');
+var TOP_POINTER_OUT = unsafeCastStringToDOMTopLevelType('pointerout');
+var TOP_POINTER_OVER = unsafeCastStringToDOMTopLevelType('pointerover');
+var TOP_POINTER_UP = unsafeCastStringToDOMTopLevelType('pointerup');
+var TOP_PROGRESS = unsafeCastStringToDOMTopLevelType('progress');
+var TOP_RATE_CHANGE = unsafeCastStringToDOMTopLevelType('ratechange');
+var TOP_RESET = unsafeCastStringToDOMTopLevelType('reset');
+var TOP_SCROLL = unsafeCastStringToDOMTopLevelType('scroll');
+var TOP_SEEKED = unsafeCastStringToDOMTopLevelType('seeked');
+var TOP_SEEKING = unsafeCastStringToDOMTopLevelType('seeking');
+var TOP_SELECTION_CHANGE = unsafeCastStringToDOMTopLevelType('selectionchange');
+var TOP_STALLED = unsafeCastStringToDOMTopLevelType('stalled');
+var TOP_SUBMIT = unsafeCastStringToDOMTopLevelType('submit');
+var TOP_SUSPEND = unsafeCastStringToDOMTopLevelType('suspend');
+var TOP_TEXT_INPUT = unsafeCastStringToDOMTopLevelType('textInput');
+var TOP_TIME_UPDATE = unsafeCastStringToDOMTopLevelType('timeupdate');
+var TOP_TOGGLE = unsafeCastStringToDOMTopLevelType('toggle');
+var TOP_TOUCH_CANCEL = unsafeCastStringToDOMTopLevelType('touchcancel');
+var TOP_TOUCH_END = unsafeCastStringToDOMTopLevelType('touchend');
+var TOP_TOUCH_MOVE = unsafeCastStringToDOMTopLevelType('touchmove');
+var TOP_TOUCH_START = unsafeCastStringToDOMTopLevelType('touchstart');
+var TOP_TRANSITION_END = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('transitionend'));
+var TOP_VOLUME_CHANGE = unsafeCastStringToDOMTopLevelType('volumechange');
+var TOP_WAITING = unsafeCastStringToDOMTopLevelType('waiting');
+var TOP_WHEEL = unsafeCastStringToDOMTopLevelType('wheel'); // List of events that need to be individually attached to media elements.
+// Note that events in this list will *not* be listened to at the top level
+// unless they're explicitly whitelisted in `ReactBrowserEventEmitter.listenTo`.
+
+var mediaEventTypes = [TOP_ABORT, TOP_CAN_PLAY, TOP_CAN_PLAY_THROUGH, TOP_DURATION_CHANGE, TOP_EMPTIED, TOP_ENCRYPTED, TOP_ENDED, TOP_ERROR, TOP_LOADED_DATA, TOP_LOADED_METADATA, TOP_LOAD_START, TOP_PAUSE, TOP_PLAY, TOP_PLAYING, TOP_PROGRESS, TOP_RATE_CHANGE, TOP_SEEKED, TOP_SEEKING, TOP_STALLED, TOP_SUSPEND, TOP_TIME_UPDATE, TOP_VOLUME_CHANGE, TOP_WAITING];
+function getRawEventName(topLevelType) {
+  return unsafeCastDOMTopLevelTypeToString(topLevelType);
+}
+
+var PossiblyWeakMap = typeof WeakMap === 'function' ? WeakMap : Map; // prettier-ignore
+
+var elementListenerMap = new PossiblyWeakMap();
+function getListenerMapForElement(element) {
+  var listenerMap = elementListenerMap.get(element);
+
+  if (listenerMap === undefined) {
+    listenerMap = new Map();
+    elementListenerMap.set(element, listenerMap);
+  }
+
+  return listenerMap;
+}
+
+/**
+ * `ReactInstanceMap` maintains a mapping from a public facing stateful
+ * instance (key) and the internal representation (value). This allows public
+ * methods to accept the user facing instance as an argument and map them back
+ * to internal methods.
+ *
+ * Note that this module is currently shared and assumed to be stateless.
+ * If this becomes an actual Map, that will break.
+ */
+function get(key) {
+  return key._reactInternalFiber;
+}
+function has(key) {
+  return key._reactInternalFiber !== undefined;
+}
+function set(key, value) {
+  key._reactInternalFiber = value;
+}
+
+// Don't change these two values. They're used by React Dev Tools.
+var NoEffect =
+/*              */
+0;
+var PerformedWork =
+/*         */
+1; // You can change the rest (and add more).
+
+var Placement =
+/*             */
+2;
+var Update =
+/*                */
+4;
+var PlacementAndUpdate =
+/*    */
+6;
+var Deletion =
+/*              */
+8;
+var ContentReset =
+/*          */
+16;
+var Callback =
+/*              */
+32;
+var DidCapture =
+/*            */
+64;
+var Ref =
+/*                   */
+128;
+var Snapshot =
+/*              */
+256;
+var Passive =
+/*               */
+512;
+var Hydrating =
+/*             */
+1024;
+var HydratingAndUpdate =
+/*    */
+1028; // Passive & Update & Callback & Ref & Snapshot
+
+var LifecycleEffectMask =
+/*   */
+932; // Union of all host effects
+
+var HostEffectMask =
+/*        */
+2047;
+var Incomplete =
+/*            */
+2048;
+var ShouldCapture =
+/*         */
+4096;
+
+var ReactCurrentOwner = ReactSharedInternals.ReactCurrentOwner;
+function getNearestMountedFiber(fiber) {
+  var node = fiber;
+  var nearestMounted = fiber;
+
+  if (!fiber.alternate) {
+    // If there is no alternate, this might be a new tree that isn't inserted
+    // yet. If it is, then it will have a pending insertion effect on it.
+    var nextNode = node;
+
+    do {
+      node = nextNode;
+
+      if ((node.effectTag & (Placement | Hydrating)) !== NoEffect) {
+        // This is an insertion or in-progress hydration. The nearest possible
+        // mounted fiber is the parent but we need to continue to figure out
+        // if that one is still mounted.
+        nearestMounted = node.return;
+      }
+
+      nextNode = node.return;
+    } while (nextNode);
+  } else {
+    while (node.return) {
+      node = node.return;
+    }
+  }
+
+  if (node.tag === HostRoot) {
+    // TODO: Check if this was a nested HostRoot when used with
+    // renderContainerIntoSubtree.
+    return nearestMounted;
+  } // If we didn't hit the root, that means that we're in an disconnected tree
+  // that has been unmounted.
+
+
+  return null;
+}
+function getSuspenseInstanceFromFiber(fiber) {
+  if (fiber.tag === SuspenseComponent) {
+    var suspenseState = fiber.memoizedState;
+
+    if (suspenseState === null) {
+      var current = fiber.alternate;
+
+      if (current !== null) {
+        suspenseState = current.memoizedState;
+      }
+    }
+
+    if (suspenseState !== null) {
+      return suspenseState.dehydrated;
+    }
+  }
+
+  return null;
+}
+function getContainerFromFiber(fiber) {
+  return fiber.tag === HostRoot ? fiber.stateNode.containerInfo : null;
+}
+function isFiberMounted(fiber) {
+  return getNearestMountedFiber(fiber) === fiber;
+}
+function isMounted(component) {
+  {
+    var owner = ReactCurrentOwner.current;
+
+    if (owner !== null && owner.tag === ClassComponent) {
+      var ownerFiber = owner;
+      var instance = ownerFiber.stateNode;
+
+      if (!instance._warnedAboutRefsInRender) {
+        error('%s is accessing isMounted inside its render() function. ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentName(ownerFiber.type) || 'A component');
+      }
+
+      instance._warnedAboutRefsInRender = true;
+    }
+  }
+
+  var fiber = get(component);
+
+  if (!fiber) {
+    return false;
+  }
+
+  return getNearestMountedFiber(fiber) === fiber;
+}
+
+function assertIsMounted(fiber) {
+  if (!(getNearestMountedFiber(fiber) === fiber)) {
+    {
+      throw Error( "Unable to find node on an unmounted component." );
+    }
+  }
+}
+
+function findCurrentFiberUsingSlowPath(fiber) {
+  var alternate = fiber.alternate;
+
+  if (!alternate) {
+    // If there is no alternate, then we only need to check if it is mounted.
+    var nearestMounted = getNearestMountedFiber(fiber);
+
+    if (!(nearestMounted !== null)) {
+      {
+        throw Error( "Unable to find node on an unmounted component." );
+      }
+    }
+
+    if (nearestMounted !== fiber) {
+      return null;
+    }
+
+    return fiber;
+  } // If we have two possible branches, we'll walk backwards up to the root
+  // to see what path the root points to. On the way we may hit one of the
+  // special cases and we'll deal with them.
+
+
+  var a = fiber;
+  var b = alternate;
+
+  while (true) {
+    var parentA = a.return;
+
+    if (parentA === null) {
+      // We're at the root.
+      break;
+    }
+
+    var parentB = parentA.alternate;
+
+    if (parentB === null) {
+      // There is no alternate. This is an unusual case. Currently, it only
+      // happens when a Suspense component is hidden. An extra fragment fiber
+      // is inserted in between the Suspense fiber and its children. Skip
+      // over this extra fragment fiber and proceed to the next parent.
+      var nextParent = parentA.return;
+
+      if (nextParent !== null) {
+        a = b = nextParent;
+        continue;
+      } // If there's no parent, we're at the root.
+
+
+      break;
+    } // If both copies of the parent fiber point to the same child, we can
+    // assume that the child is current. This happens when we bailout on low
+    // priority: the bailed out fiber's child reuses the current child.
+
+
+    if (parentA.child === parentB.child) {
+      var child = parentA.child;
+
+      while (child) {
+        if (child === a) {
+          // We've determined that A is the current branch.
+          assertIsMounted(parentA);
+          return fiber;
+        }
+
+        if (child === b) {
+          // We've determined that B is the current branch.
+          assertIsMounted(parentA);
+          return alternate;
+        }
+
+        child = child.sibling;
+      } // We should never have an alternate for any mounting node. So the only
+      // way this could possibly happen is if this was unmounted, if at all.
+
+
+      {
+        {
+          throw Error( "Unable to find node on an unmounted component." );
+        }
+      }
+    }
+
+    if (a.return !== b.return) {
+      // The return pointer of A and the return pointer of B point to different
+      // fibers. We assume that return pointers never criss-cross, so A must
+      // belong to the child set of A.return, and B must belong to the child
+      // set of B.return.
+      a = parentA;
+      b = parentB;
+    } else {
+      // The return pointers point to the same fiber. We'll have to use the
+      // default, slow path: scan the child sets of each parent alternate to see
+      // which child belongs to which set.
+      //
+      // Search parent A's child set
+      var didFindChild = false;
+      var _child = parentA.child;
+
+      while (_child) {
+        if (_child === a) {
+          didFindChild = true;
+          a = parentA;
+          b = parentB;
+          break;
+        }
+
+        if (_child === b) {
+          didFindChild = true;
+          b = parentA;
+          a = parentB;
+          break;
+        }
+
+        _child = _child.sibling;
+      }
+
+      if (!didFindChild) {
+        // Search parent B's child set
+        _child = parentB.child;
+
+        while (_child) {
+          if (_child === a) {
+            didFindChild = true;
+            a = parentB;
+            b = parentA;
+            break;
+          }
+
+          if (_child === b) {
+            didFindChild = true;
+            b = parentB;
+            a = parentA;
+            break;
+          }
+
+          _child = _child.sibling;
+        }
+
+        if (!didFindChild) {
+          {
+            throw Error( "Child was not found in either parent set. This indicates a bug in React related to the return pointer. Please file an issue." );
+          }
+        }
+      }
+    }
+
+    if (!(a.alternate === b)) {
+      {
+        throw Error( "Return fibers should always be each others' alternates. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+  } // If the root is not a host container, we're in a disconnected tree. I.e.
+  // unmounted.
+
+
+  if (!(a.tag === HostRoot)) {
+    {
+      throw Error( "Unable to find node on an unmounted component." );
+    }
+  }
+
+  if (a.stateNode.current === a) {
+    // We've determined that A is the current branch.
+    return fiber;
+  } // Otherwise B has to be current branch.
+
+
+  return alternate;
+}
+function findCurrentHostFiber(parent) {
+  var currentParent = findCurrentFiberUsingSlowPath(parent);
+
+  if (!currentParent) {
+    return null;
+  } // Next we'll drill down this component to find the first HostComponent/Text.
+
+
+  var node = currentParent;
+
+  while (true) {
+    if (node.tag === HostComponent || node.tag === HostText) {
+      return node;
+    } else if (node.child) {
+      node.child.return = node;
+      node = node.child;
+      continue;
+    }
+
+    if (node === currentParent) {
+      return null;
+    }
+
+    while (!node.sibling) {
+      if (!node.return || node.return === currentParent) {
+        return null;
+      }
+
+      node = node.return;
+    }
+
+    node.sibling.return = node.return;
+    node = node.sibling;
+  } // Flow needs the return null here, but ESLint complains about it.
+  // eslint-disable-next-line no-unreachable
+
+
+  return null;
+}
+function findCurrentHostFiberWithNoPortals(parent) {
+  var currentParent = findCurrentFiberUsingSlowPath(parent);
+
+  if (!currentParent) {
+    return null;
+  } // Next we'll drill down this component to find the first HostComponent/Text.
+
+
+  var node = currentParent;
+
+  while (true) {
+    if (node.tag === HostComponent || node.tag === HostText || enableFundamentalAPI ) {
+      return node;
+    } else if (node.child && node.tag !== HostPortal) {
+      node.child.return = node;
+      node = node.child;
+      continue;
+    }
+
+    if (node === currentParent) {
+      return null;
+    }
+
+    while (!node.sibling) {
+      if (!node.return || node.return === currentParent) {
+        return null;
+      }
+
+      node = node.return;
+    }
+
+    node.sibling.return = node.return;
+    node = node.sibling;
+  } // Flow needs the return null here, but ESLint complains about it.
+  // eslint-disable-next-line no-unreachable
+
+
+  return null;
+}
+
+/**
+ * Accumulates items that must not be null or undefined into the first one. This
+ * is used to conserve memory by avoiding array allocations, and thus sacrifices
+ * API cleanness. Since `current` can be null before being passed in and not
+ * null after this function, make sure to assign it back to `current`:
+ *
+ * `a = accumulateInto(a, b);`
+ *
+ * This API should be sparingly used. Try `accumulate` for something cleaner.
+ *
+ * @return {*|array<*>} An accumulation of items.
+ */
+
+function accumulateInto(current, next) {
+  if (!(next != null)) {
+    {
+      throw Error( "accumulateInto(...): Accumulated items must not be null or undefined." );
+    }
+  }
+
+  if (current == null) {
+    return next;
+  } // Both are not empty. Warning: Never call x.concat(y) when you are not
+  // certain that x is an Array (x could be a string with concat method).
+
+
+  if (Array.isArray(current)) {
+    if (Array.isArray(next)) {
+      current.push.apply(current, next);
+      return current;
+    }
+
+    current.push(next);
+    return current;
+  }
+
+  if (Array.isArray(next)) {
+    // A bit too dangerous to mutate `next`.
+    return [current].concat(next);
+  }
+
+  return [current, next];
+}
+
+/**
+ * @param {array} arr an "accumulation" of items which is either an Array or
+ * a single item. Useful when paired with the `accumulate` module. This is a
+ * simple utility that allows us to reason about a collection of items, but
+ * handling the case when there is exactly one item (and we do not need to
+ * allocate an array).
+ * @param {function} cb Callback invoked with each element or a collection.
+ * @param {?} [scope] Scope used as `this` in a callback.
+ */
+function forEachAccumulated(arr, cb, scope) {
+  if (Array.isArray(arr)) {
+    arr.forEach(cb, scope);
+  } else if (arr) {
+    cb.call(scope, arr);
+  }
+}
+
+/**
+ * Internal queue of events that have accumulated their dispatches and are
+ * waiting to have their dispatches executed.
+ */
+
+var eventQueue = null;
+/**
+ * Dispatches an event and releases it back into the pool, unless persistent.
+ *
+ * @param {?object} event Synthetic event to be dispatched.
+ * @private
+ */
+
+var executeDispatchesAndRelease = function (event) {
+  if (event) {
+    executeDispatchesInOrder(event);
+
+    if (!event.isPersistent()) {
+      event.constructor.release(event);
+    }
+  }
+};
+
+var executeDispatchesAndReleaseTopLevel = function (e) {
+  return executeDispatchesAndRelease(e);
+};
+
+function runEventsInBatch(events) {
+  if (events !== null) {
+    eventQueue = accumulateInto(eventQueue, events);
+  } // Set `eventQueue` to null before processing it so that we can tell if more
+  // events get enqueued while processing.
+
+
+  var processingEventQueue = eventQueue;
+  eventQueue = null;
+
+  if (!processingEventQueue) {
+    return;
+  }
+
+  forEachAccumulated(processingEventQueue, executeDispatchesAndReleaseTopLevel);
+
+  if (!!eventQueue) {
+    {
+      throw Error( "processEventQueue(): Additional events were enqueued while processing an event queue. Support for this has not yet been implemented." );
+    }
+  } // This would be a good time to rethrow if any of the event handlers threw.
+
+
+  rethrowCaughtError();
+}
+
+/**
+ * Gets the target node from a native browser event by accounting for
+ * inconsistencies in browser DOM APIs.
+ *
+ * @param {object} nativeEvent Native browser event.
+ * @return {DOMEventTarget} Target node.
+ */
+
+function getEventTarget(nativeEvent) {
+  // Fallback to nativeEvent.srcElement for IE9
+  // https://github.com/facebook/react/issues/12506
+  var target = nativeEvent.target || nativeEvent.srcElement || window; // Normalize SVG <use> element events #4963
+
+  if (target.correspondingUseElement) {
+    target = target.correspondingUseElement;
+  } // Safari may fire events on text nodes (Node.TEXT_NODE is 3).
+  // @see http://www.quirksmode.org/js/events_properties.html
+
+
+  return target.nodeType === TEXT_NODE ? target.parentNode : target;
+}
+
+/**
+ * Checks if an event is supported in the current execution environment.
+ *
+ * NOTE: This will not work correctly for non-generic events such as `change`,
+ * `reset`, `load`, `error`, and `select`.
+ *
+ * Borrows from Modernizr.
+ *
+ * @param {string} eventNameSuffix Event name, e.g. "click".
+ * @return {boolean} True if the event is supported.
+ * @internal
+ * @license Modernizr 3.0.0pre (Custom Build) | MIT
+ */
+
+function isEventSupported(eventNameSuffix) {
+  if (!canUseDOM) {
+    return false;
+  }
+
+  var eventName = 'on' + eventNameSuffix;
+  var isSupported = eventName in document;
+
+  if (!isSupported) {
+    var element = document.createElement('div');
+    element.setAttribute(eventName, 'return;');
+    isSupported = typeof element[eventName] === 'function';
+  }
+
+  return isSupported;
+}
+
+/**
+ * Summary of `DOMEventPluginSystem` event handling:
+ *
+ *  - Top-level delegation is used to trap most native browser events. This
+ *    may only occur in the main thread and is the responsibility of
+ *    ReactDOMEventListener, which is injected and can therefore support
+ *    pluggable event sources. This is the only work that occurs in the main
+ *    thread.
+ *
+ *  - We normalize and de-duplicate events to account for browser quirks. This
+ *    may be done in the worker thread.
+ *
+ *  - Forward these native events (with the associated top-level type used to
+ *    trap it) to `EventPluginRegistry`, which in turn will ask plugins if they want
+ *    to extract any synthetic events.
+ *
+ *  - The `EventPluginRegistry` will then process each event by annotating them with
+ *    "dispatches", a sequence of listeners and IDs that care about that event.
+ *
+ *  - The `EventPluginRegistry` then dispatches the events.
+ *
+ * Overview of React and the event system:
+ *
+ * +------------+    .
+ * |    DOM     |    .
+ * +------------+    .
+ *       |           .
+ *       v           .
+ * +------------+    .
+ * | ReactEvent |    .
+ * |  Listener  |    .
+ * +------------+    .                         +-----------+
+ *       |           .               +--------+|SimpleEvent|
+ *       |           .               |         |Plugin     |
+ * +-----|------+    .               v         +-----------+
+ * |     |      |    .    +--------------+                    +------------+
+ * |     +-----------.--->|PluginRegistry|                    |    Event   |
+ * |            |    .    |              |     +-----------+  | Propagators|
+ * | ReactEvent |    .    |              |     |TapEvent   |  |------------|
+ * |  Emitter   |    .    |              |<---+|Plugin     |  |other plugin|
+ * |            |    .    |              |     +-----------+  |  utilities |
+ * |     +-----------.--->|              |                    +------------+
+ * |     |      |    .    +--------------+
+ * +-----|------+    .                ^        +-----------+
+ *       |           .                |        |Enter/Leave|
+ *       +           .                +-------+|Plugin     |
+ * +-------------+   .                         +-----------+
+ * | application |   .
+ * |-------------|   .
+ * |             |   .
+ * |             |   .
+ * +-------------+   .
+ *                   .
+ *    React Core     .  General Purpose Event Plugin System
+ */
+
+var CALLBACK_BOOKKEEPING_POOL_SIZE = 10;
+var callbackBookkeepingPool = [];
+
+function releaseTopLevelCallbackBookKeeping(instance) {
+  instance.topLevelType = null;
+  instance.nativeEvent = null;
+  instance.targetInst = null;
+  instance.ancestors.length = 0;
+
+  if (callbackBookkeepingPool.length < CALLBACK_BOOKKEEPING_POOL_SIZE) {
+    callbackBookkeepingPool.push(instance);
+  }
+} // Used to store ancestor hierarchy in top level callback
+
+
+function getTopLevelCallbackBookKeeping(topLevelType, nativeEvent, targetInst, eventSystemFlags) {
+  if (callbackBookkeepingPool.length) {
+    var instance = callbackBookkeepingPool.pop();
+    instance.topLevelType = topLevelType;
+    instance.eventSystemFlags = eventSystemFlags;
+    instance.nativeEvent = nativeEvent;
+    instance.targetInst = targetInst;
+    return instance;
+  }
+
+  return {
+    topLevelType: topLevelType,
+    eventSystemFlags: eventSystemFlags,
+    nativeEvent: nativeEvent,
+    targetInst: targetInst,
+    ancestors: []
+  };
+}
+/**
+ * Find the deepest React component completely containing the root of the
+ * passed-in instance (for use when entire React trees are nested within each
+ * other). If React trees are not nested, returns null.
+ */
+
+
+function findRootContainerNode(inst) {
+  if (inst.tag === HostRoot) {
+    return inst.stateNode.containerInfo;
+  } // TODO: It may be a good idea to cache this to prevent unnecessary DOM
+  // traversal, but caching is difficult to do correctly without using a
+  // mutation observer to listen for all DOM changes.
+
+
+  while (inst.return) {
+    inst = inst.return;
+  }
+
+  if (inst.tag !== HostRoot) {
+    // This can happen if we're in a detached tree.
+    return null;
+  }
+
+  return inst.stateNode.containerInfo;
+}
+/**
+ * Allows registered plugins an opportunity to extract events from top-level
+ * native browser events.
+ *
+ * @return {*} An accumulation of synthetic events.
+ * @internal
+ */
+
+
+function extractPluginEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) {
+  var events = null;
+
+  for (var i = 0; i < plugins.length; i++) {
+    // Not every plugin in the ordering may be loaded at runtime.
+    var possiblePlugin = plugins[i];
+
+    if (possiblePlugin) {
+      var extractedEvents = possiblePlugin.extractEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags);
+
+      if (extractedEvents) {
+        events = accumulateInto(events, extractedEvents);
+      }
+    }
+  }
+
+  return events;
+}
+
+function runExtractedPluginEventsInBatch(topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) {
+  var events = extractPluginEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags);
+  runEventsInBatch(events);
+}
+
+function handleTopLevel(bookKeeping) {
+  var targetInst = bookKeeping.targetInst; // Loop through the hierarchy, in case there's any nested components.
+  // It's important that we build the array of ancestors before calling any
+  // event handlers, because event handlers can modify the DOM, leading to
+  // inconsistencies with ReactMount's node cache. See #1105.
+
+  var ancestor = targetInst;
+
+  do {
+    if (!ancestor) {
+      var ancestors = bookKeeping.ancestors;
+      ancestors.push(ancestor);
+      break;
+    }
+
+    var root = findRootContainerNode(ancestor);
+
+    if (!root) {
+      break;
+    }
+
+    var tag = ancestor.tag;
+
+    if (tag === HostComponent || tag === HostText) {
+      bookKeeping.ancestors.push(ancestor);
+    }
+
+    ancestor = getClosestInstanceFromNode(root);
+  } while (ancestor);
+
+  for (var i = 0; i < bookKeeping.ancestors.length; i++) {
+    targetInst = bookKeeping.ancestors[i];
+    var eventTarget = getEventTarget(bookKeeping.nativeEvent);
+    var topLevelType = bookKeeping.topLevelType;
+    var nativeEvent = bookKeeping.nativeEvent;
+    var eventSystemFlags = bookKeeping.eventSystemFlags; // If this is the first ancestor, we mark it on the system flags
+
+    if (i === 0) {
+      eventSystemFlags |= IS_FIRST_ANCESTOR;
+    }
+
+    runExtractedPluginEventsInBatch(topLevelType, targetInst, nativeEvent, eventTarget, eventSystemFlags);
+  }
+}
+
+function dispatchEventForLegacyPluginEventSystem(topLevelType, eventSystemFlags, nativeEvent, targetInst) {
+  var bookKeeping = getTopLevelCallbackBookKeeping(topLevelType, nativeEvent, targetInst, eventSystemFlags);
+
+  try {
+    // Event queue being processed in the same cycle allows
+    // `preventDefault`.
+    batchedEventUpdates(handleTopLevel, bookKeeping);
+  } finally {
+    releaseTopLevelCallbackBookKeeping(bookKeeping);
+  }
+}
+/**
+ * We listen for bubbled touch events on the document object.
+ *
+ * Firefox v8.01 (and possibly others) exhibited strange behavior when
+ * mounting `onmousemove` events at some node that was not the document
+ * element. The symptoms were that if your mouse is not moving over something
+ * contained within that mount point (for example on the background) the
+ * top-level listeners for `onmousemove` won't be called. However, if you
+ * register the `mousemove` on the document object, then it will of course
+ * catch all `mousemove`s. This along with iOS quirks, justifies restricting
+ * top-level listeners to the document object only, at least for these
+ * movement types of events and possibly all events.
+ *
+ * @see http://www.quirksmode.org/blog/archives/2010/09/click_event_del.html
+ *
+ * Also, `keyup`/`keypress`/`keydown` do not bubble to the window on IE, but
+ * they bubble to document.
+ *
+ * @param {string} registrationName Name of listener (e.g. `onClick`).
+ * @param {object} mountAt Container where to mount the listener
+ */
+
+function legacyListenToEvent(registrationName, mountAt) {
+  var listenerMap = getListenerMapForElement(mountAt);
+  var dependencies = registrationNameDependencies[registrationName];
+
+  for (var i = 0; i < dependencies.length; i++) {
+    var dependency = dependencies[i];
+    legacyListenToTopLevelEvent(dependency, mountAt, listenerMap);
+  }
+}
+function legacyListenToTopLevelEvent(topLevelType, mountAt, listenerMap) {
+  if (!listenerMap.has(topLevelType)) {
+    switch (topLevelType) {
+      case TOP_SCROLL:
+        trapCapturedEvent(TOP_SCROLL, mountAt);
+        break;
+
+      case TOP_FOCUS:
+      case TOP_BLUR:
+        trapCapturedEvent(TOP_FOCUS, mountAt);
+        trapCapturedEvent(TOP_BLUR, mountAt); // We set the flag for a single dependency later in this function,
+        // but this ensures we mark both as attached rather than just one.
+
+        listenerMap.set(TOP_BLUR, null);
+        listenerMap.set(TOP_FOCUS, null);
+        break;
+
+      case TOP_CANCEL:
+      case TOP_CLOSE:
+        if (isEventSupported(getRawEventName(topLevelType))) {
+          trapCapturedEvent(topLevelType, mountAt);
+        }
+
+        break;
+
+      case TOP_INVALID:
+      case TOP_SUBMIT:
+      case TOP_RESET:
+        // We listen to them on the target DOM elements.
+        // Some of them bubble so we don't want them to fire twice.
+        break;
+
+      default:
+        // By default, listen on the top level to all non-media events.
+        // Media events don't bubble so adding the listener wouldn't do anything.
+        var isMediaEvent = mediaEventTypes.indexOf(topLevelType) !== -1;
+
+        if (!isMediaEvent) {
+          trapBubbledEvent(topLevelType, mountAt);
+        }
+
+        break;
+    }
+
+    listenerMap.set(topLevelType, null);
+  }
+}
+function isListeningToAllDependencies(registrationName, mountAt) {
+  var listenerMap = getListenerMapForElement(mountAt);
+  var dependencies = registrationNameDependencies[registrationName];
+
+  for (var i = 0; i < dependencies.length; i++) {
+    var dependency = dependencies[i];
+
+    if (!listenerMap.has(dependency)) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+var attemptUserBlockingHydration;
+function setAttemptUserBlockingHydration(fn) {
+  attemptUserBlockingHydration = fn;
+}
+var attemptContinuousHydration;
+function setAttemptContinuousHydration(fn) {
+  attemptContinuousHydration = fn;
+}
+var attemptHydrationAtCurrentPriority;
+function setAttemptHydrationAtCurrentPriority(fn) {
+  attemptHydrationAtCurrentPriority = fn;
+} // TODO: Upgrade this definition once we're on a newer version of Flow that
+var hasScheduledReplayAttempt = false; // The queue of discrete events to be replayed.
+
+var queuedDiscreteEvents = []; // Indicates if any continuous event targets are non-null for early bailout.
+// if the last target was dehydrated.
+
+var queuedFocus = null;
+var queuedDrag = null;
+var queuedMouse = null; // For pointer events there can be one latest event per pointerId.
+
+var queuedPointers = new Map();
+var queuedPointerCaptures = new Map(); // We could consider replaying selectionchange and touchmoves too.
+
+var queuedExplicitHydrationTargets = [];
+function hasQueuedDiscreteEvents() {
+  return queuedDiscreteEvents.length > 0;
+}
+var discreteReplayableEvents = [TOP_MOUSE_DOWN, TOP_MOUSE_UP, TOP_TOUCH_CANCEL, TOP_TOUCH_END, TOP_TOUCH_START, TOP_AUX_CLICK, TOP_DOUBLE_CLICK, TOP_POINTER_CANCEL, TOP_POINTER_DOWN, TOP_POINTER_UP, TOP_DRAG_END, TOP_DRAG_START, TOP_DROP, TOP_COMPOSITION_END, TOP_COMPOSITION_START, TOP_KEY_DOWN, TOP_KEY_PRESS, TOP_KEY_UP, TOP_INPUT, TOP_TEXT_INPUT, TOP_CLOSE, TOP_CANCEL, TOP_COPY, TOP_CUT, TOP_PASTE, TOP_CLICK, TOP_CHANGE, TOP_CONTEXT_MENU, TOP_RESET, TOP_SUBMIT];
+var continuousReplayableEvents = [TOP_FOCUS, TOP_BLUR, TOP_DRAG_ENTER, TOP_DRAG_LEAVE, TOP_MOUSE_OVER, TOP_MOUSE_OUT, TOP_POINTER_OVER, TOP_POINTER_OUT, TOP_GOT_POINTER_CAPTURE, TOP_LOST_POINTER_CAPTURE];
+function isReplayableDiscreteEvent(eventType) {
+  return discreteReplayableEvents.indexOf(eventType) > -1;
+}
+
+function trapReplayableEventForDocument(topLevelType, document, listenerMap) {
+  legacyListenToTopLevelEvent(topLevelType, document, listenerMap);
+}
+
+function eagerlyTrapReplayableEvents(container, document) {
+  var listenerMapForDoc = getListenerMapForElement(document); // Discrete
+
+  discreteReplayableEvents.forEach(function (topLevelType) {
+    trapReplayableEventForDocument(topLevelType, document, listenerMapForDoc);
+  }); // Continuous
+
+  continuousReplayableEvents.forEach(function (topLevelType) {
+    trapReplayableEventForDocument(topLevelType, document, listenerMapForDoc);
+  });
+}
+
+function createQueuedReplayableEvent(blockedOn, topLevelType, eventSystemFlags, container, nativeEvent) {
+  return {
+    blockedOn: blockedOn,
+    topLevelType: topLevelType,
+    eventSystemFlags: eventSystemFlags | IS_REPLAYED,
+    nativeEvent: nativeEvent,
+    container: container
+  };
+}
+
+function queueDiscreteEvent(blockedOn, topLevelType, eventSystemFlags, container, nativeEvent) {
+  var queuedEvent = createQueuedReplayableEvent(blockedOn, topLevelType, eventSystemFlags, container, nativeEvent);
+  queuedDiscreteEvents.push(queuedEvent);
+} // Resets the replaying for this type of continuous event to no event.
+
+function clearIfContinuousEvent(topLevelType, nativeEvent) {
+  switch (topLevelType) {
+    case TOP_FOCUS:
+    case TOP_BLUR:
+      queuedFocus = null;
+      break;
+
+    case TOP_DRAG_ENTER:
+    case TOP_DRAG_LEAVE:
+      queuedDrag = null;
+      break;
+
+    case TOP_MOUSE_OVER:
+    case TOP_MOUSE_OUT:
+      queuedMouse = null;
+      break;
+
+    case TOP_POINTER_OVER:
+    case TOP_POINTER_OUT:
+      {
+        var pointerId = nativeEvent.pointerId;
+        queuedPointers.delete(pointerId);
+        break;
+      }
+
+    case TOP_GOT_POINTER_CAPTURE:
+    case TOP_LOST_POINTER_CAPTURE:
+      {
+        var _pointerId = nativeEvent.pointerId;
+        queuedPointerCaptures.delete(_pointerId);
+        break;
+      }
+  }
+}
+
+function accumulateOrCreateContinuousQueuedReplayableEvent(existingQueuedEvent, blockedOn, topLevelType, eventSystemFlags, container, nativeEvent) {
+  if (existingQueuedEvent === null || existingQueuedEvent.nativeEvent !== nativeEvent) {
+    var queuedEvent = createQueuedReplayableEvent(blockedOn, topLevelType, eventSystemFlags, container, nativeEvent);
+
+    if (blockedOn !== null) {
+      var _fiber2 = getInstanceFromNode$1(blockedOn);
+
+      if (_fiber2 !== null) {
+        // Attempt to increase the priority of this target.
+        attemptContinuousHydration(_fiber2);
+      }
+    }
+
+    return queuedEvent;
+  } // If we have already queued this exact event, then it's because
+  // the different event systems have different DOM event listeners.
+  // We can accumulate the flags and store a single event to be
+  // replayed.
+
+
+  existingQueuedEvent.eventSystemFlags |= eventSystemFlags;
+  return existingQueuedEvent;
+}
+
+function queueIfContinuousEvent(blockedOn, topLevelType, eventSystemFlags, container, nativeEvent) {
+  // These set relatedTarget to null because the replayed event will be treated as if we
+  // moved from outside the window (no target) onto the target once it hydrates.
+  // Instead of mutating we could clone the event.
+  switch (topLevelType) {
+    case TOP_FOCUS:
+      {
+        var focusEvent = nativeEvent;
+        queuedFocus = accumulateOrCreateContinuousQueuedReplayableEvent(queuedFocus, blockedOn, topLevelType, eventSystemFlags, container, focusEvent);
+        return true;
+      }
+
+    case TOP_DRAG_ENTER:
+      {
+        var dragEvent = nativeEvent;
+        queuedDrag = accumulateOrCreateContinuousQueuedReplayableEvent(queuedDrag, blockedOn, topLevelType, eventSystemFlags, container, dragEvent);
+        return true;
+      }
+
+    case TOP_MOUSE_OVER:
+      {
+        var mouseEvent = nativeEvent;
+        queuedMouse = accumulateOrCreateContinuousQueuedReplayableEvent(queuedMouse, blockedOn, topLevelType, eventSystemFlags, container, mouseEvent);
+        return true;
+      }
+
+    case TOP_POINTER_OVER:
+      {
+        var pointerEvent = nativeEvent;
+        var pointerId = pointerEvent.pointerId;
+        queuedPointers.set(pointerId, accumulateOrCreateContinuousQueuedReplayableEvent(queuedPointers.get(pointerId) || null, blockedOn, topLevelType, eventSystemFlags, container, pointerEvent));
+        return true;
+      }
+
+    case TOP_GOT_POINTER_CAPTURE:
+      {
+        var _pointerEvent = nativeEvent;
+        var _pointerId2 = _pointerEvent.pointerId;
+        queuedPointerCaptures.set(_pointerId2, accumulateOrCreateContinuousQueuedReplayableEvent(queuedPointerCaptures.get(_pointerId2) || null, blockedOn, topLevelType, eventSystemFlags, container, _pointerEvent));
+        return true;
+      }
+  }
+
+  return false;
+} // Check if this target is unblocked. Returns true if it's unblocked.
+
+function attemptExplicitHydrationTarget(queuedTarget) {
+  // TODO: This function shares a lot of logic with attemptToDispatchEvent.
+  // Try to unify them. It's a bit tricky since it would require two return
+  // values.
+  var targetInst = getClosestInstanceFromNode(queuedTarget.target);
+
+  if (targetInst !== null) {
+    var nearestMounted = getNearestMountedFiber(targetInst);
+
+    if (nearestMounted !== null) {
+      var tag = nearestMounted.tag;
+
+      if (tag === SuspenseComponent) {
+        var instance = getSuspenseInstanceFromFiber(nearestMounted);
+
+        if (instance !== null) {
+          // We're blocked on hydrating this boundary.
+          // Increase its priority.
+          queuedTarget.blockedOn = instance;
+          Scheduler.unstable_runWithPriority(queuedTarget.priority, function () {
+            attemptHydrationAtCurrentPriority(nearestMounted);
+          });
+          return;
+        }
+      } else if (tag === HostRoot) {
+        var root = nearestMounted.stateNode;
+
+        if (root.hydrate) {
+          queuedTarget.blockedOn = getContainerFromFiber(nearestMounted); // We don't currently have a way to increase the priority of
+          // a root other than sync.
+
+          return;
+        }
+      }
+    }
+  }
+
+  queuedTarget.blockedOn = null;
+}
+
+function attemptReplayContinuousQueuedEvent(queuedEvent) {
+  if (queuedEvent.blockedOn !== null) {
+    return false;
+  }
+
+  var nextBlockedOn = attemptToDispatchEvent(queuedEvent.topLevelType, queuedEvent.eventSystemFlags, queuedEvent.container, queuedEvent.nativeEvent);
+
+  if (nextBlockedOn !== null) {
+    // We're still blocked. Try again later.
+    var _fiber3 = getInstanceFromNode$1(nextBlockedOn);
+
+    if (_fiber3 !== null) {
+      attemptContinuousHydration(_fiber3);
+    }
+
+    queuedEvent.blockedOn = nextBlockedOn;
+    return false;
+  }
+
+  return true;
+}
+
+function attemptReplayContinuousQueuedEventInMap(queuedEvent, key, map) {
+  if (attemptReplayContinuousQueuedEvent(queuedEvent)) {
+    map.delete(key);
+  }
+}
+
+function replayUnblockedEvents() {
+  hasScheduledReplayAttempt = false; // First replay discrete events.
+
+  while (queuedDiscreteEvents.length > 0) {
+    var nextDiscreteEvent = queuedDiscreteEvents[0];
+
+    if (nextDiscreteEvent.blockedOn !== null) {
+      // We're still blocked.
+      // Increase the priority of this boundary to unblock
+      // the next discrete event.
+      var _fiber4 = getInstanceFromNode$1(nextDiscreteEvent.blockedOn);
+
+      if (_fiber4 !== null) {
+        attemptUserBlockingHydration(_fiber4);
+      }
+
+      break;
+    }
+
+    var nextBlockedOn = attemptToDispatchEvent(nextDiscreteEvent.topLevelType, nextDiscreteEvent.eventSystemFlags, nextDiscreteEvent.container, nextDiscreteEvent.nativeEvent);
+
+    if (nextBlockedOn !== null) {
+      // We're still blocked. Try again later.
+      nextDiscreteEvent.blockedOn = nextBlockedOn;
+    } else {
+      // We've successfully replayed the first event. Let's try the next one.
+      queuedDiscreteEvents.shift();
+    }
+  } // Next replay any continuous events.
+
+
+  if (queuedFocus !== null && attemptReplayContinuousQueuedEvent(queuedFocus)) {
+    queuedFocus = null;
+  }
+
+  if (queuedDrag !== null && attemptReplayContinuousQueuedEvent(queuedDrag)) {
+    queuedDrag = null;
+  }
+
+  if (queuedMouse !== null && attemptReplayContinuousQueuedEvent(queuedMouse)) {
+    queuedMouse = null;
+  }
+
+  queuedPointers.forEach(attemptReplayContinuousQueuedEventInMap);
+  queuedPointerCaptures.forEach(attemptReplayContinuousQueuedEventInMap);
+}
+
+function scheduleCallbackIfUnblocked(queuedEvent, unblocked) {
+  if (queuedEvent.blockedOn === unblocked) {
+    queuedEvent.blockedOn = null;
+
+    if (!hasScheduledReplayAttempt) {
+      hasScheduledReplayAttempt = true; // Schedule a callback to attempt replaying as many events as are
+      // now unblocked. This first might not actually be unblocked yet.
+      // We could check it early to avoid scheduling an unnecessary callback.
+
+      Scheduler.unstable_scheduleCallback(Scheduler.unstable_NormalPriority, replayUnblockedEvents);
+    }
+  }
+}
+
+function retryIfBlockedOn(unblocked) {
+  // Mark anything that was blocked on this as no longer blocked
+  // and eligible for a replay.
+  if (queuedDiscreteEvents.length > 0) {
+    scheduleCallbackIfUnblocked(queuedDiscreteEvents[0], unblocked); // This is a exponential search for each boundary that commits. I think it's
+    // worth it because we expect very few discrete events to queue up and once
+    // we are actually fully unblocked it will be fast to replay them.
+
+    for (var i = 1; i < queuedDiscreteEvents.length; i++) {
+      var queuedEvent = queuedDiscreteEvents[i];
+
+      if (queuedEvent.blockedOn === unblocked) {
+        queuedEvent.blockedOn = null;
+      }
+    }
+  }
+
+  if (queuedFocus !== null) {
+    scheduleCallbackIfUnblocked(queuedFocus, unblocked);
+  }
+
+  if (queuedDrag !== null) {
+    scheduleCallbackIfUnblocked(queuedDrag, unblocked);
+  }
+
+  if (queuedMouse !== null) {
+    scheduleCallbackIfUnblocked(queuedMouse, unblocked);
+  }
+
+  var unblock = function (queuedEvent) {
+    return scheduleCallbackIfUnblocked(queuedEvent, unblocked);
+  };
+
+  queuedPointers.forEach(unblock);
+  queuedPointerCaptures.forEach(unblock);
+
+  for (var _i = 0; _i < queuedExplicitHydrationTargets.length; _i++) {
+    var queuedTarget = queuedExplicitHydrationTargets[_i];
+
+    if (queuedTarget.blockedOn === unblocked) {
+      queuedTarget.blockedOn = null;
+    }
+  }
+
+  while (queuedExplicitHydrationTargets.length > 0) {
+    var nextExplicitTarget = queuedExplicitHydrationTargets[0];
+
+    if (nextExplicitTarget.blockedOn !== null) {
+      // We're still blocked.
+      break;
+    } else {
+      attemptExplicitHydrationTarget(nextExplicitTarget);
+
+      if (nextExplicitTarget.blockedOn === null) {
+        // We're unblocked.
+        queuedExplicitHydrationTargets.shift();
+      }
+    }
+  }
+}
+
+function addEventBubbleListener(element, eventType, listener) {
+  element.addEventListener(eventType, listener, false);
+}
+function addEventCaptureListener(element, eventType, listener) {
+  element.addEventListener(eventType, listener, true);
+}
+
+// do it in two places, which duplicates logic
+// and increases the bundle size, we do it all
+// here once. If we remove or refactor the
+// SimpleEventPlugin, we should also remove or
+// update the below line.
+
+var simpleEventPluginEventTypes = {};
+var topLevelEventsToDispatchConfig = new Map();
+var eventPriorities = new Map(); // We store most of the events in this module in pairs of two strings so we can re-use
+// the code required to apply the same logic for event prioritization and that of the
+// SimpleEventPlugin. This complicates things slightly, but the aim is to reduce code
+// duplication (for which there would be quite a bit). For the events that are not needed
+// for the SimpleEventPlugin (otherDiscreteEvents) we process them separately as an
+// array of top level events.
+// Lastly, we ignore prettier so we can keep the formatting sane.
+// prettier-ignore
+
+var discreteEventPairsForSimpleEventPlugin = [TOP_BLUR, 'blur', TOP_CANCEL, 'cancel', TOP_CLICK, 'click', TOP_CLOSE, 'close', TOP_CONTEXT_MENU, 'contextMenu', TOP_COPY, 'copy', TOP_CUT, 'cut', TOP_AUX_CLICK, 'auxClick', TOP_DOUBLE_CLICK, 'doubleClick', TOP_DRAG_END, 'dragEnd', TOP_DRAG_START, 'dragStart', TOP_DROP, 'drop', TOP_FOCUS, 'focus', TOP_INPUT, 'input', TOP_INVALID, 'invalid', TOP_KEY_DOWN, 'keyDown', TOP_KEY_PRESS, 'keyPress', TOP_KEY_UP, 'keyUp', TOP_MOUSE_DOWN, 'mouseDown', TOP_MOUSE_UP, 'mouseUp', TOP_PASTE, 'paste', TOP_PAUSE, 'pause', TOP_PLAY, 'play', TOP_POINTER_CANCEL, 'pointerCancel', TOP_POINTER_DOWN, 'pointerDown', TOP_POINTER_UP, 'pointerUp', TOP_RATE_CHANGE, 'rateChange', TOP_RESET, 'reset', TOP_SEEKED, 'seeked', TOP_SUBMIT, 'submit', TOP_TOUCH_CANCEL, 'touchCancel', TOP_TOUCH_END, 'touchEnd', TOP_TOUCH_START, 'touchStart', TOP_VOLUME_CHANGE, 'volumeChange'];
+var otherDiscreteEvents = [TOP_CHANGE, TOP_SELECTION_CHANGE, TOP_TEXT_INPUT, TOP_COMPOSITION_START, TOP_COMPOSITION_END, TOP_COMPOSITION_UPDATE]; // prettier-ignore
+
+var userBlockingPairsForSimpleEventPlugin = [TOP_DRAG, 'drag', TOP_DRAG_ENTER, 'dragEnter', TOP_DRAG_EXIT, 'dragExit', TOP_DRAG_LEAVE, 'dragLeave', TOP_DRAG_OVER, 'dragOver', TOP_MOUSE_MOVE, 'mouseMove', TOP_MOUSE_OUT, 'mouseOut', TOP_MOUSE_OVER, 'mouseOver', TOP_POINTER_MOVE, 'pointerMove', TOP_POINTER_OUT, 'pointerOut', TOP_POINTER_OVER, 'pointerOver', TOP_SCROLL, 'scroll', TOP_TOGGLE, 'toggle', TOP_TOUCH_MOVE, 'touchMove', TOP_WHEEL, 'wheel']; // prettier-ignore
+
+var continuousPairsForSimpleEventPlugin = [TOP_ABORT, 'abort', TOP_ANIMATION_END, 'animationEnd', TOP_ANIMATION_ITERATION, 'animationIteration', TOP_ANIMATION_START, 'animationStart', TOP_CAN_PLAY, 'canPlay', TOP_CAN_PLAY_THROUGH, 'canPlayThrough', TOP_DURATION_CHANGE, 'durationChange', TOP_EMPTIED, 'emptied', TOP_ENCRYPTED, 'encrypted', TOP_ENDED, 'ended', TOP_ERROR, 'error', TOP_GOT_POINTER_CAPTURE, 'gotPointerCapture', TOP_LOAD, 'load', TOP_LOADED_DATA, 'loadedData', TOP_LOADED_METADATA, 'loadedMetadata', TOP_LOAD_START, 'loadStart', TOP_LOST_POINTER_CAPTURE, 'lostPointerCapture', TOP_PLAYING, 'playing', TOP_PROGRESS, 'progress', TOP_SEEKING, 'seeking', TOP_STALLED, 'stalled', TOP_SUSPEND, 'suspend', TOP_TIME_UPDATE, 'timeUpdate', TOP_TRANSITION_END, 'transitionEnd', TOP_WAITING, 'waiting'];
+/**
+ * Turns
+ * ['abort', ...]
+ * into
+ * eventTypes = {
+ *   'abort': {
+ *     phasedRegistrationNames: {
+ *       bubbled: 'onAbort',
+ *       captured: 'onAbortCapture',
+ *     },
+ *     dependencies: [TOP_ABORT],
+ *   },
+ *   ...
+ * };
+ * topLevelEventsToDispatchConfig = new Map([
+ *   [TOP_ABORT, { sameConfig }],
+ * ]);
+ */
+
+function processSimpleEventPluginPairsByPriority(eventTypes, priority) {
+  // As the event types are in pairs of two, we need to iterate
+  // through in twos. The events are in pairs of two to save code
+  // and improve init perf of processing this array, as it will
+  // result in far fewer object allocations and property accesses
+  // if we only use three arrays to process all the categories of
+  // instead of tuples.
+  for (var i = 0; i < eventTypes.length; i += 2) {
+    var topEvent = eventTypes[i];
+    var event = eventTypes[i + 1];
+    var capitalizedEvent = event[0].toUpperCase() + event.slice(1);
+    var onEvent = 'on' + capitalizedEvent;
+    var config = {
+      phasedRegistrationNames: {
+        bubbled: onEvent,
+        captured: onEvent + 'Capture'
+      },
+      dependencies: [topEvent],
+      eventPriority: priority
+    };
+    eventPriorities.set(topEvent, priority);
+    topLevelEventsToDispatchConfig.set(topEvent, config);
+    simpleEventPluginEventTypes[event] = config;
+  }
+}
+
+function processTopEventPairsByPriority(eventTypes, priority) {
+  for (var i = 0; i < eventTypes.length; i++) {
+    eventPriorities.set(eventTypes[i], priority);
+  }
+} // SimpleEventPlugin
+
+
+processSimpleEventPluginPairsByPriority(discreteEventPairsForSimpleEventPlugin, DiscreteEvent);
+processSimpleEventPluginPairsByPriority(userBlockingPairsForSimpleEventPlugin, UserBlockingEvent);
+processSimpleEventPluginPairsByPriority(continuousPairsForSimpleEventPlugin, ContinuousEvent); // Not used by SimpleEventPlugin
+
+processTopEventPairsByPriority(otherDiscreteEvents, DiscreteEvent);
+function getEventPriorityForPluginSystem(topLevelType) {
+  var priority = eventPriorities.get(topLevelType); // Default to a ContinuousEvent. Note: we might
+  // want to warn if we can't detect the priority
+  // for the event.
+
+  return priority === undefined ? ContinuousEvent : priority;
+}
+
+// Intentionally not named imports because Rollup would use dynamic dispatch for
+var UserBlockingPriority = Scheduler.unstable_UserBlockingPriority,
+    runWithPriority = Scheduler.unstable_runWithPriority; // TODO: can we stop exporting these?
+
+var _enabled = true;
+function setEnabled(enabled) {
+  _enabled = !!enabled;
+}
+function isEnabled() {
+  return _enabled;
+}
+function trapBubbledEvent(topLevelType, element) {
+  trapEventForPluginEventSystem(element, topLevelType, false);
+}
+function trapCapturedEvent(topLevelType, element) {
+  trapEventForPluginEventSystem(element, topLevelType, true);
+}
+
+function trapEventForPluginEventSystem(container, topLevelType, capture) {
+  var listener;
+
+  switch (getEventPriorityForPluginSystem(topLevelType)) {
+    case DiscreteEvent:
+      listener = dispatchDiscreteEvent.bind(null, topLevelType, PLUGIN_EVENT_SYSTEM, container);
+      break;
+
+    case UserBlockingEvent:
+      listener = dispatchUserBlockingUpdate.bind(null, topLevelType, PLUGIN_EVENT_SYSTEM, container);
+      break;
+
+    case ContinuousEvent:
+    default:
+      listener = dispatchEvent.bind(null, topLevelType, PLUGIN_EVENT_SYSTEM, container);
+      break;
+  }
+
+  var rawEventName = getRawEventName(topLevelType);
+
+  if (capture) {
+    addEventCaptureListener(container, rawEventName, listener);
+  } else {
+    addEventBubbleListener(container, rawEventName, listener);
+  }
+}
+
+function dispatchDiscreteEvent(topLevelType, eventSystemFlags, container, nativeEvent) {
+  flushDiscreteUpdatesIfNeeded(nativeEvent.timeStamp);
+  discreteUpdates(dispatchEvent, topLevelType, eventSystemFlags, container, nativeEvent);
+}
+
+function dispatchUserBlockingUpdate(topLevelType, eventSystemFlags, container, nativeEvent) {
+  runWithPriority(UserBlockingPriority, dispatchEvent.bind(null, topLevelType, eventSystemFlags, container, nativeEvent));
+}
+
+function dispatchEvent(topLevelType, eventSystemFlags, container, nativeEvent) {
+  if (!_enabled) {
+    return;
+  }
+
+  if (hasQueuedDiscreteEvents() && isReplayableDiscreteEvent(topLevelType)) {
+    // If we already have a queue of discrete events, and this is another discrete
+    // event, then we can't dispatch it regardless of its target, since they
+    // need to dispatch in order.
+    queueDiscreteEvent(null, // Flags that we're not actually blocked on anything as far as we know.
+    topLevelType, eventSystemFlags, container, nativeEvent);
+    return;
+  }
+
+  var blockedOn = attemptToDispatchEvent(topLevelType, eventSystemFlags, container, nativeEvent);
+
+  if (blockedOn === null) {
+    // We successfully dispatched this event.
+    clearIfContinuousEvent(topLevelType, nativeEvent);
+    return;
+  }
+
+  if (isReplayableDiscreteEvent(topLevelType)) {
+    // This this to be replayed later once the target is available.
+    queueDiscreteEvent(blockedOn, topLevelType, eventSystemFlags, container, nativeEvent);
+    return;
+  }
+
+  if (queueIfContinuousEvent(blockedOn, topLevelType, eventSystemFlags, container, nativeEvent)) {
+    return;
+  } // We need to clear only if we didn't queue because
+  // queueing is accummulative.
+
+
+  clearIfContinuousEvent(topLevelType, nativeEvent); // This is not replayable so we'll invoke it but without a target,
+  // in case the event system needs to trace it.
+
+  {
+    dispatchEventForLegacyPluginEventSystem(topLevelType, eventSystemFlags, nativeEvent, null);
+  }
+} // Attempt dispatching an event. Returns a SuspenseInstance or Container if it's blocked.
+
+function attemptToDispatchEvent(topLevelType, eventSystemFlags, container, nativeEvent) {
+  // TODO: Warn if _enabled is false.
+  var nativeEventTarget = getEventTarget(nativeEvent);
+  var targetInst = getClosestInstanceFromNode(nativeEventTarget);
+
+  if (targetInst !== null) {
+    var nearestMounted = getNearestMountedFiber(targetInst);
+
+    if (nearestMounted === null) {
+      // This tree has been unmounted already. Dispatch without a target.
+      targetInst = null;
+    } else {
+      var tag = nearestMounted.tag;
+
+      if (tag === SuspenseComponent) {
+        var instance = getSuspenseInstanceFromFiber(nearestMounted);
+
+        if (instance !== null) {
+          // Queue the event to be replayed later. Abort dispatching since we
+          // don't want this event dispatched twice through the event system.
+          // TODO: If this is the first discrete event in the queue. Schedule an increased
+          // priority for this boundary.
+          return instance;
+        } // This shouldn't happen, something went wrong but to avoid blocking
+        // the whole system, dispatch the event without a target.
+        // TODO: Warn.
+
+
+        targetInst = null;
+      } else if (tag === HostRoot) {
+        var root = nearestMounted.stateNode;
+
+        if (root.hydrate) {
+          // If this happens during a replay something went wrong and it might block
+          // the whole system.
+          return getContainerFromFiber(nearestMounted);
+        }
+
+        targetInst = null;
+      } else if (nearestMounted !== targetInst) {
+        // If we get an event (ex: img onload) before committing that
+        // component's mount, ignore it for now (that is, treat it as if it was an
+        // event on a non-React tree). We might also consider queueing events and
+        // dispatching them after the mount.
+        targetInst = null;
+      }
+    }
+  }
+
+  {
+    dispatchEventForLegacyPluginEventSystem(topLevelType, eventSystemFlags, nativeEvent, targetInst);
+  } // We're not blocked on anything.
+
+
+  return null;
+}
+
+// List derived from Gecko source code:
+// https://github.com/mozilla/gecko-dev/blob/4e638efc71/layout/style/test/property_database.js
+var shorthandToLonghand = {
+  animation: ['animationDelay', 'animationDirection', 'animationDuration', 'animationFillMode', 'animationIterationCount', 'animationName', 'animationPlayState', 'animationTimingFunction'],
+  background: ['backgroundAttachment', 'backgroundClip', 'backgroundColor', 'backgroundImage', 'backgroundOrigin', 'backgroundPositionX', 'backgroundPositionY', 'backgroundRepeat', 'backgroundSize'],
+  backgroundPosition: ['backgroundPositionX', 'backgroundPositionY'],
+  border: ['borderBottomColor', 'borderBottomStyle', 'borderBottomWidth', 'borderImageOutset', 'borderImageRepeat', 'borderImageSlice', 'borderImageSource', 'borderImageWidth', 'borderLeftColor', 'borderLeftStyle', 'borderLeftWidth', 'borderRightColor', 'borderRightStyle', 'borderRightWidth', 'borderTopColor', 'borderTopStyle', 'borderTopWidth'],
+  borderBlockEnd: ['borderBlockEndColor', 'borderBlockEndStyle', 'borderBlockEndWidth'],
+  borderBlockStart: ['borderBlockStartColor', 'borderBlockStartStyle', 'borderBlockStartWidth'],
+  borderBottom: ['borderBottomColor', 'borderBottomStyle', 'borderBottomWidth'],
+  borderColor: ['borderBottomColor', 'borderLeftColor', 'borderRightColor', 'borderTopColor'],
+  borderImage: ['borderImageOutset', 'borderImageRepeat', 'borderImageSlice', 'borderImageSource', 'borderImageWidth'],
+  borderInlineEnd: ['borderInlineEndColor', 'borderInlineEndStyle', 'borderInlineEndWidth'],
+  borderInlineStart: ['borderInlineStartColor', 'borderInlineStartStyle', 'borderInlineStartWidth'],
+  borderLeft: ['borderLeftColor', 'borderLeftStyle', 'borderLeftWidth'],
+  borderRadius: ['borderBottomLeftRadius', 'borderBottomRightRadius', 'borderTopLeftRadius', 'borderTopRightRadius'],
+  borderRight: ['borderRightColor', 'borderRightStyle', 'borderRightWidth'],
+  borderStyle: ['borderBottomStyle', 'borderLeftStyle', 'borderRightStyle', 'borderTopStyle'],
+  borderTop: ['borderTopColor', 'borderTopStyle', 'borderTopWidth'],
+  borderWidth: ['borderBottomWidth', 'borderLeftWidth', 'borderRightWidth', 'borderTopWidth'],
+  columnRule: ['columnRuleColor', 'columnRuleStyle', 'columnRuleWidth'],
+  columns: ['columnCount', 'columnWidth'],
+  flex: ['flexBasis', 'flexGrow', 'flexShrink'],
+  flexFlow: ['flexDirection', 'flexWrap'],
+  font: ['fontFamily', 'fontFeatureSettings', 'fontKerning', 'fontLanguageOverride', 'fontSize', 'fontSizeAdjust', 'fontStretch', 'fontStyle', 'fontVariant', 'fontVariantAlternates', 'fontVariantCaps', 'fontVariantEastAsian', 'fontVariantLigatures', 'fontVariantNumeric', 'fontVariantPosition', 'fontWeight', 'lineHeight'],
+  fontVariant: ['fontVariantAlternates', 'fontVariantCaps', 'fontVariantEastAsian', 'fontVariantLigatures', 'fontVariantNumeric', 'fontVariantPosition'],
+  gap: ['columnGap', 'rowGap'],
+  grid: ['gridAutoColumns', 'gridAutoFlow', 'gridAutoRows', 'gridTemplateAreas', 'gridTemplateColumns', 'gridTemplateRows'],
+  gridArea: ['gridColumnEnd', 'gridColumnStart', 'gridRowEnd', 'gridRowStart'],
+  gridColumn: ['gridColumnEnd', 'gridColumnStart'],
+  gridColumnGap: ['columnGap'],
+  gridGap: ['columnGap', 'rowGap'],
+  gridRow: ['gridRowEnd', 'gridRowStart'],
+  gridRowGap: ['rowGap'],
+  gridTemplate: ['gridTemplateAreas', 'gridTemplateColumns', 'gridTemplateRows'],
+  listStyle: ['listStyleImage', 'listStylePosition', 'listStyleType'],
+  margin: ['marginBottom', 'marginLeft', 'marginRight', 'marginTop'],
+  marker: ['markerEnd', 'markerMid', 'markerStart'],
+  mask: ['maskClip', 'maskComposite', 'maskImage', 'maskMode', 'maskOrigin', 'maskPositionX', 'maskPositionY', 'maskRepeat', 'maskSize'],
+  maskPosition: ['maskPositionX', 'maskPositionY'],
+  outline: ['outlineColor', 'outlineStyle', 'outlineWidth'],
+  overflow: ['overflowX', 'overflowY'],
+  padding: ['paddingBottom', 'paddingLeft', 'paddingRight', 'paddingTop'],
+  placeContent: ['alignContent', 'justifyContent'],
+  placeItems: ['alignItems', 'justifyItems'],
+  placeSelf: ['alignSelf', 'justifySelf'],
+  textDecoration: ['textDecorationColor', 'textDecorationLine', 'textDecorationStyle'],
+  textEmphasis: ['textEmphasisColor', 'textEmphasisStyle'],
+  transition: ['transitionDelay', 'transitionDuration', 'transitionProperty', 'transitionTimingFunction'],
+  wordWrap: ['overflowWrap']
+};
+
+/**
+ * CSS properties which accept numbers but are not in units of "px".
+ */
+var isUnitlessNumber = {
+  animationIterationCount: true,
+  borderImageOutset: true,
+  borderImageSlice: true,
+  borderImageWidth: true,
+  boxFlex: true,
+  boxFlexGroup: true,
+  boxOrdinalGroup: true,
+  columnCount: true,
+  columns: true,
+  flex: true,
+  flexGrow: true,
+  flexPositive: true,
+  flexShrink: true,
+  flexNegative: true,
+  flexOrder: true,
+  gridArea: true,
+  gridRow: true,
+  gridRowEnd: true,
+  gridRowSpan: true,
+  gridRowStart: true,
+  gridColumn: true,
+  gridColumnEnd: true,
+  gridColumnSpan: true,
+  gridColumnStart: true,
+  fontWeight: true,
+  lineClamp: true,
+  lineHeight: true,
+  opacity: true,
+  order: true,
+  orphans: true,
+  tabSize: true,
+  widows: true,
+  zIndex: true,
+  zoom: true,
+  // SVG-related properties
+  fillOpacity: true,
+  floodOpacity: true,
+  stopOpacity: true,
+  strokeDasharray: true,
+  strokeDashoffset: true,
+  strokeMiterlimit: true,
+  strokeOpacity: true,
+  strokeWidth: true
+};
+/**
+ * @param {string} prefix vendor-specific prefix, eg: Webkit
+ * @param {string} key style name, eg: transitionDuration
+ * @return {string} style name prefixed with `prefix`, properly camelCased, eg:
+ * WebkitTransitionDuration
+ */
+
+function prefixKey(prefix, key) {
+  return prefix + key.charAt(0).toUpperCase() + key.substring(1);
+}
+/**
+ * Support style names that may come passed in prefixed by adding permutations
+ * of vendor prefixes.
+ */
+
+
+var prefixes = ['Webkit', 'ms', 'Moz', 'O']; // Using Object.keys here, or else the vanilla for-in loop makes IE8 go into an
+// infinite loop, because it iterates over the newly added props too.
+
+Object.keys(isUnitlessNumber).forEach(function (prop) {
+  prefixes.forEach(function (prefix) {
+    isUnitlessNumber[prefixKey(prefix, prop)] = isUnitlessNumber[prop];
+  });
+});
+
+/**
+ * Convert a value into the proper css writable value. The style name `name`
+ * should be logical (no hyphens), as specified
+ * in `CSSProperty.isUnitlessNumber`.
+ *
+ * @param {string} name CSS property name such as `topMargin`.
+ * @param {*} value CSS property value such as `10px`.
+ * @return {string} Normalized style value with dimensions applied.
+ */
+
+function dangerousStyleValue(name, value, isCustomProperty) {
+  // Note that we've removed escapeTextForBrowser() calls here since the
+  // whole string will be escaped when the attribute is injected into
+  // the markup. If you provide unsafe user data here they can inject
+  // arbitrary CSS which may be problematic (I couldn't repro this):
+  // https://www.owasp.org/index.php/XSS_Filter_Evasion_Cheat_Sheet
+  // http://www.thespanner.co.uk/2007/11/26/ultimate-xss-css-injection/
+  // This is not an XSS hole but instead a potential CSS injection issue
+  // which has lead to a greater discussion about how we're going to
+  // trust URLs moving forward. See #2115901
+  var isEmpty = value == null || typeof value === 'boolean' || value === '';
+
+  if (isEmpty) {
+    return '';
+  }
+
+  if (!isCustomProperty && typeof value === 'number' && value !== 0 && !(isUnitlessNumber.hasOwnProperty(name) && isUnitlessNumber[name])) {
+    return value + 'px'; // Presumes implicit 'px' suffix for unitless numbers
+  }
+
+  return ('' + value).trim();
+}
+
+var uppercasePattern = /([A-Z])/g;
+var msPattern = /^ms-/;
+/**
+ * Hyphenates a camelcased CSS property name, for example:
+ *
+ *   > hyphenateStyleName('backgroundColor')
+ *   < "background-color"
+ *   > hyphenateStyleName('MozTransition')
+ *   < "-moz-transition"
+ *   > hyphenateStyleName('msTransition')
+ *   < "-ms-transition"
+ *
+ * As Modernizr suggests (http://modernizr.com/docs/#prefixed), an `ms` prefix
+ * is converted to `-ms-`.
+ */
+
+function hyphenateStyleName(name) {
+  return name.replace(uppercasePattern, '-$1').toLowerCase().replace(msPattern, '-ms-');
+}
+
+var warnValidStyle = function () {};
+
+{
+  // 'msTransform' is correct, but the other prefixes should be capitalized
+  var badVendoredStyleNamePattern = /^(?:webkit|moz|o)[A-Z]/;
+  var msPattern$1 = /^-ms-/;
+  var hyphenPattern = /-(.)/g; // style values shouldn't contain a semicolon
+
+  var badStyleValueWithSemicolonPattern = /;\s*$/;
+  var warnedStyleNames = {};
+  var warnedStyleValues = {};
+  var warnedForNaNValue = false;
+  var warnedForInfinityValue = false;
+
+  var camelize = function (string) {
+    return string.replace(hyphenPattern, function (_, character) {
+      return character.toUpperCase();
+    });
+  };
+
+  var warnHyphenatedStyleName = function (name) {
+    if (warnedStyleNames.hasOwnProperty(name) && warnedStyleNames[name]) {
+      return;
+    }
+
+    warnedStyleNames[name] = true;
+
+    error('Unsupported style property %s. Did you mean %s?', name, // As Andi Smith suggests
+    // (http://www.andismith.com/blog/2012/02/modernizr-prefixed/), an `-ms` prefix
+    // is converted to lowercase `ms`.
+    camelize(name.replace(msPattern$1, 'ms-')));
+  };
+
+  var warnBadVendoredStyleName = function (name) {
+    if (warnedStyleNames.hasOwnProperty(name) && warnedStyleNames[name]) {
+      return;
+    }
+
+    warnedStyleNames[name] = true;
+
+    error('Unsupported vendor-prefixed style property %s. Did you mean %s?', name, name.charAt(0).toUpperCase() + name.slice(1));
+  };
+
+  var warnStyleValueWithSemicolon = function (name, value) {
+    if (warnedStyleValues.hasOwnProperty(value) && warnedStyleValues[value]) {
+      return;
+    }
+
+    warnedStyleValues[value] = true;
+
+    error("Style property values shouldn't contain a semicolon. " + 'Try "%s: %s" instead.', name, value.replace(badStyleValueWithSemicolonPattern, ''));
+  };
+
+  var warnStyleValueIsNaN = function (name, value) {
+    if (warnedForNaNValue) {
+      return;
+    }
+
+    warnedForNaNValue = true;
+
+    error('`NaN` is an invalid value for the `%s` css style property.', name);
+  };
+
+  var warnStyleValueIsInfinity = function (name, value) {
+    if (warnedForInfinityValue) {
+      return;
+    }
+
+    warnedForInfinityValue = true;
+
+    error('`Infinity` is an invalid value for the `%s` css style property.', name);
+  };
+
+  warnValidStyle = function (name, value) {
+    if (name.indexOf('-') > -1) {
+      warnHyphenatedStyleName(name);
+    } else if (badVendoredStyleNamePattern.test(name)) {
+      warnBadVendoredStyleName(name);
+    } else if (badStyleValueWithSemicolonPattern.test(value)) {
+      warnStyleValueWithSemicolon(name, value);
+    }
+
+    if (typeof value === 'number') {
+      if (isNaN(value)) {
+        warnStyleValueIsNaN(name, value);
+      } else if (!isFinite(value)) {
+        warnStyleValueIsInfinity(name, value);
+      }
+    }
+  };
+}
+
+var warnValidStyle$1 = warnValidStyle;
+
+/**
+ * Operations for dealing with CSS properties.
+ */
+
+/**
+ * This creates a string that is expected to be equivalent to the style
+ * attribute generated by server-side rendering. It by-passes warnings and
+ * security checks so it's not safe to use this value for anything other than
+ * comparison. It is only used in DEV for SSR validation.
+ */
+
+function createDangerousStringForStyles(styles) {
+  {
+    var serialized = '';
+    var delimiter = '';
+
+    for (var styleName in styles) {
+      if (!styles.hasOwnProperty(styleName)) {
+        continue;
+      }
+
+      var styleValue = styles[styleName];
+
+      if (styleValue != null) {
+        var isCustomProperty = styleName.indexOf('--') === 0;
+        serialized += delimiter + (isCustomProperty ? styleName : hyphenateStyleName(styleName)) + ':';
+        serialized += dangerousStyleValue(styleName, styleValue, isCustomProperty);
+        delimiter = ';';
+      }
+    }
+
+    return serialized || null;
+  }
+}
+/**
+ * Sets the value for multiple styles on a node.  If a value is specified as
+ * '' (empty string), the corresponding style property will be unset.
+ *
+ * @param {DOMElement} node
+ * @param {object} styles
+ */
+
+function setValueForStyles(node, styles) {
+  var style = node.style;
+
+  for (var styleName in styles) {
+    if (!styles.hasOwnProperty(styleName)) {
+      continue;
+    }
+
+    var isCustomProperty = styleName.indexOf('--') === 0;
+
+    {
+      if (!isCustomProperty) {
+        warnValidStyle$1(styleName, styles[styleName]);
+      }
+    }
+
+    var styleValue = dangerousStyleValue(styleName, styles[styleName], isCustomProperty);
+
+    if (styleName === 'float') {
+      styleName = 'cssFloat';
+    }
+
+    if (isCustomProperty) {
+      style.setProperty(styleName, styleValue);
+    } else {
+      style[styleName] = styleValue;
+    }
+  }
+}
+
+function isValueEmpty(value) {
+  return value == null || typeof value === 'boolean' || value === '';
+}
+/**
+ * Given {color: 'red', overflow: 'hidden'} returns {
+ *   color: 'color',
+ *   overflowX: 'overflow',
+ *   overflowY: 'overflow',
+ * }. This can be read as "the overflowY property was set by the overflow
+ * shorthand". That is, the values are the property that each was derived from.
+ */
+
+
+function expandShorthandMap(styles) {
+  var expanded = {};
+
+  for (var key in styles) {
+    var longhands = shorthandToLonghand[key] || [key];
+
+    for (var i = 0; i < longhands.length; i++) {
+      expanded[longhands[i]] = key;
+    }
+  }
+
+  return expanded;
+}
+/**
+ * When mixing shorthand and longhand property names, we warn during updates if
+ * we expect an incorrect result to occur. In particular, we warn for:
+ *
+ * Updating a shorthand property (longhand gets overwritten):
+ *   {font: 'foo', fontVariant: 'bar'} -> {font: 'baz', fontVariant: 'bar'}
+ *   becomes .style.font = 'baz'
+ * Removing a shorthand property (longhand gets lost too):
+ *   {font: 'foo', fontVariant: 'bar'} -> {fontVariant: 'bar'}
+ *   becomes .style.font = ''
+ * Removing a longhand property (should revert to shorthand; doesn't):
+ *   {font: 'foo', fontVariant: 'bar'} -> {font: 'foo'}
+ *   becomes .style.fontVariant = ''
+ */
+
+
+function validateShorthandPropertyCollisionInDev(styleUpdates, nextStyles) {
+  {
+
+    if (!nextStyles) {
+      return;
+    }
+
+    var expandedUpdates = expandShorthandMap(styleUpdates);
+    var expandedStyles = expandShorthandMap(nextStyles);
+    var warnedAbout = {};
+
+    for (var key in expandedUpdates) {
+      var originalKey = expandedUpdates[key];
+      var correctOriginalKey = expandedStyles[key];
+
+      if (correctOriginalKey && originalKey !== correctOriginalKey) {
+        var warningKey = originalKey + ',' + correctOriginalKey;
+
+        if (warnedAbout[warningKey]) {
+          continue;
+        }
+
+        warnedAbout[warningKey] = true;
+
+        error('%s a style property during rerender (%s) when a ' + 'conflicting property is set (%s) can lead to styling bugs. To ' + "avoid this, don't mix shorthand and non-shorthand properties " + 'for the same value; instead, replace the shorthand with ' + 'separate values.', isValueEmpty(styleUpdates[originalKey]) ? 'Removing' : 'Updating', originalKey, correctOriginalKey);
+      }
+    }
+  }
+}
+
+// For HTML, certain tags should omit their close tag. We keep a whitelist for
+// those special-case tags.
+var omittedCloseTags = {
+  area: true,
+  base: true,
+  br: true,
+  col: true,
+  embed: true,
+  hr: true,
+  img: true,
+  input: true,
+  keygen: true,
+  link: true,
+  meta: true,
+  param: true,
+  source: true,
+  track: true,
+  wbr: true // NOTE: menuitem's close tag should be omitted, but that causes problems.
+
+};
+
+// `omittedCloseTags` except that `menuitem` should still have its closing tag.
+
+var voidElementTags = _assign({
+  menuitem: true
+}, omittedCloseTags);
+
+var HTML = '__html';
+var ReactDebugCurrentFrame$3 = null;
+
+{
+  ReactDebugCurrentFrame$3 = ReactSharedInternals.ReactDebugCurrentFrame;
+}
+
+function assertValidProps(tag, props) {
+  if (!props) {
+    return;
+  } // Note the use of `==` which checks for null or undefined.
+
+
+  if (voidElementTags[tag]) {
+    if (!(props.children == null && props.dangerouslySetInnerHTML == null)) {
+      {
+        throw Error( tag + " is a void element tag and must neither have `children` nor use `dangerouslySetInnerHTML`." + ( ReactDebugCurrentFrame$3.getStackAddendum() ) );
+      }
+    }
+  }
+
+  if (props.dangerouslySetInnerHTML != null) {
+    if (!(props.children == null)) {
+      {
+        throw Error( "Can only set one of `children` or `props.dangerouslySetInnerHTML`." );
+      }
+    }
+
+    if (!(typeof props.dangerouslySetInnerHTML === 'object' && HTML in props.dangerouslySetInnerHTML)) {
+      {
+        throw Error( "`props.dangerouslySetInnerHTML` must be in the form `{__html: ...}`. Please visit https://fb.me/react-invariant-dangerously-set-inner-html for more information." );
+      }
+    }
+  }
+
+  {
+    if (!props.suppressContentEditableWarning && props.contentEditable && props.children != null) {
+      error('A component is `contentEditable` and contains `children` managed by ' + 'React. It is now your responsibility to guarantee that none of ' + 'those nodes are unexpectedly modified or duplicated. This is ' + 'probably not intentional.');
+    }
+  }
+
+  if (!(props.style == null || typeof props.style === 'object')) {
+    {
+      throw Error( "The `style` prop expects a mapping from style properties to values, not a string. For example, style={{marginRight: spacing + 'em'}} when using JSX." + ( ReactDebugCurrentFrame$3.getStackAddendum() ) );
+    }
+  }
+}
+
+function isCustomComponent(tagName, props) {
+  if (tagName.indexOf('-') === -1) {
+    return typeof props.is === 'string';
+  }
+
+  switch (tagName) {
+    // These are reserved SVG and MathML elements.
+    // We don't mind this whitelist too much because we expect it to never grow.
+    // The alternative is to track the namespace in a few places which is convoluted.
+    // https://w3c.github.io/webcomponents/spec/custom/#custom-elements-core-concepts
+    case 'annotation-xml':
+    case 'color-profile':
+    case 'font-face':
+    case 'font-face-src':
+    case 'font-face-uri':
+    case 'font-face-format':
+    case 'font-face-name':
+    case 'missing-glyph':
+      return false;
+
+    default:
+      return true;
+  }
+}
+
+// When adding attributes to the HTML or SVG whitelist, be sure to
+// also add them to this module to ensure casing and incorrect name
+// warnings.
+var possibleStandardNames = {
+  // HTML
+  accept: 'accept',
+  acceptcharset: 'acceptCharset',
+  'accept-charset': 'acceptCharset',
+  accesskey: 'accessKey',
+  action: 'action',
+  allowfullscreen: 'allowFullScreen',
+  alt: 'alt',
+  as: 'as',
+  async: 'async',
+  autocapitalize: 'autoCapitalize',
+  autocomplete: 'autoComplete',
+  autocorrect: 'autoCorrect',
+  autofocus: 'autoFocus',
+  autoplay: 'autoPlay',
+  autosave: 'autoSave',
+  capture: 'capture',
+  cellpadding: 'cellPadding',
+  cellspacing: 'cellSpacing',
+  challenge: 'challenge',
+  charset: 'charSet',
+  checked: 'checked',
+  children: 'children',
+  cite: 'cite',
+  class: 'className',
+  classid: 'classID',
+  classname: 'className',
+  cols: 'cols',
+  colspan: 'colSpan',
+  content: 'content',
+  contenteditable: 'contentEditable',
+  contextmenu: 'contextMenu',
+  controls: 'controls',
+  controlslist: 'controlsList',
+  coords: 'coords',
+  crossorigin: 'crossOrigin',
+  dangerouslysetinnerhtml: 'dangerouslySetInnerHTML',
+  data: 'data',
+  datetime: 'dateTime',
+  default: 'default',
+  defaultchecked: 'defaultChecked',
+  defaultvalue: 'defaultValue',
+  defer: 'defer',
+  dir: 'dir',
+  disabled: 'disabled',
+  disablepictureinpicture: 'disablePictureInPicture',
+  download: 'download',
+  draggable: 'draggable',
+  enctype: 'encType',
+  for: 'htmlFor',
+  form: 'form',
+  formmethod: 'formMethod',
+  formaction: 'formAction',
+  formenctype: 'formEncType',
+  formnovalidate: 'formNoValidate',
+  formtarget: 'formTarget',
+  frameborder: 'frameBorder',
+  headers: 'headers',
+  height: 'height',
+  hidden: 'hidden',
+  high: 'high',
+  href: 'href',
+  hreflang: 'hrefLang',
+  htmlfor: 'htmlFor',
+  httpequiv: 'httpEquiv',
+  'http-equiv': 'httpEquiv',
+  icon: 'icon',
+  id: 'id',
+  innerhtml: 'innerHTML',
+  inputmode: 'inputMode',
+  integrity: 'integrity',
+  is: 'is',
+  itemid: 'itemID',
+  itemprop: 'itemProp',
+  itemref: 'itemRef',
+  itemscope: 'itemScope',
+  itemtype: 'itemType',
+  keyparams: 'keyParams',
+  keytype: 'keyType',
+  kind: 'kind',
+  label: 'label',
+  lang: 'lang',
+  list: 'list',
+  loop: 'loop',
+  low: 'low',
+  manifest: 'manifest',
+  marginwidth: 'marginWidth',
+  marginheight: 'marginHeight',
+  max: 'max',
+  maxlength: 'maxLength',
+  media: 'media',
+  mediagroup: 'mediaGroup',
+  method: 'method',
+  min: 'min',
+  minlength: 'minLength',
+  multiple: 'multiple',
+  muted: 'muted',
+  name: 'name',
+  nomodule: 'noModule',
+  nonce: 'nonce',
+  novalidate: 'noValidate',
+  open: 'open',
+  optimum: 'optimum',
+  pattern: 'pattern',
+  placeholder: 'placeholder',
+  playsinline: 'playsInline',
+  poster: 'poster',
+  preload: 'preload',
+  profile: 'profile',
+  radiogroup: 'radioGroup',
+  readonly: 'readOnly',
+  referrerpolicy: 'referrerPolicy',
+  rel: 'rel',
+  required: 'required',
+  reversed: 'reversed',
+  role: 'role',
+  rows: 'rows',
+  rowspan: 'rowSpan',
+  sandbox: 'sandbox',
+  scope: 'scope',
+  scoped: 'scoped',
+  scrolling: 'scrolling',
+  seamless: 'seamless',
+  selected: 'selected',
+  shape: 'shape',
+  size: 'size',
+  sizes: 'sizes',
+  span: 'span',
+  spellcheck: 'spellCheck',
+  src: 'src',
+  srcdoc: 'srcDoc',
+  srclang: 'srcLang',
+  srcset: 'srcSet',
+  start: 'start',
+  step: 'step',
+  style: 'style',
+  summary: 'summary',
+  tabindex: 'tabIndex',
+  target: 'target',
+  title: 'title',
+  type: 'type',
+  usemap: 'useMap',
+  value: 'value',
+  width: 'width',
+  wmode: 'wmode',
+  wrap: 'wrap',
+  // SVG
+  about: 'about',
+  accentheight: 'accentHeight',
+  'accent-height': 'accentHeight',
+  accumulate: 'accumulate',
+  additive: 'additive',
+  alignmentbaseline: 'alignmentBaseline',
+  'alignment-baseline': 'alignmentBaseline',
+  allowreorder: 'allowReorder',
+  alphabetic: 'alphabetic',
+  amplitude: 'amplitude',
+  arabicform: 'arabicForm',
+  'arabic-form': 'arabicForm',
+  ascent: 'ascent',
+  attributename: 'attributeName',
+  attributetype: 'attributeType',
+  autoreverse: 'autoReverse',
+  azimuth: 'azimuth',
+  basefrequency: 'baseFrequency',
+  baselineshift: 'baselineShift',
+  'baseline-shift': 'baselineShift',
+  baseprofile: 'baseProfile',
+  bbox: 'bbox',
+  begin: 'begin',
+  bias: 'bias',
+  by: 'by',
+  calcmode: 'calcMode',
+  capheight: 'capHeight',
+  'cap-height': 'capHeight',
+  clip: 'clip',
+  clippath: 'clipPath',
+  'clip-path': 'clipPath',
+  clippathunits: 'clipPathUnits',
+  cliprule: 'clipRule',
+  'clip-rule': 'clipRule',
+  color: 'color',
+  colorinterpolation: 'colorInterpolation',
+  'color-interpolation': 'colorInterpolation',
+  colorinterpolationfilters: 'colorInterpolationFilters',
+  'color-interpolation-filters': 'colorInterpolationFilters',
+  colorprofile: 'colorProfile',
+  'color-profile': 'colorProfile',
+  colorrendering: 'colorRendering',
+  'color-rendering': 'colorRendering',
+  contentscripttype: 'contentScriptType',
+  contentstyletype: 'contentStyleType',
+  cursor: 'cursor',
+  cx: 'cx',
+  cy: 'cy',
+  d: 'd',
+  datatype: 'datatype',
+  decelerate: 'decelerate',
+  descent: 'descent',
+  diffuseconstant: 'diffuseConstant',
+  direction: 'direction',
+  display: 'display',
+  divisor: 'divisor',
+  dominantbaseline: 'dominantBaseline',
+  'dominant-baseline': 'dominantBaseline',
+  dur: 'dur',
+  dx: 'dx',
+  dy: 'dy',
+  edgemode: 'edgeMode',
+  elevation: 'elevation',
+  enablebackground: 'enableBackground',
+  'enable-background': 'enableBackground',
+  end: 'end',
+  exponent: 'exponent',
+  externalresourcesrequired: 'externalResourcesRequired',
+  fill: 'fill',
+  fillopacity: 'fillOpacity',
+  'fill-opacity': 'fillOpacity',
+  fillrule: 'fillRule',
+  'fill-rule': 'fillRule',
+  filter: 'filter',
+  filterres: 'filterRes',
+  filterunits: 'filterUnits',
+  floodopacity: 'floodOpacity',
+  'flood-opacity': 'floodOpacity',
+  floodcolor: 'floodColor',
+  'flood-color': 'floodColor',
+  focusable: 'focusable',
+  fontfamily: 'fontFamily',
+  'font-family': 'fontFamily',
+  fontsize: 'fontSize',
+  'font-size': 'fontSize',
+  fontsizeadjust: 'fontSizeAdjust',
+  'font-size-adjust': 'fontSizeAdjust',
+  fontstretch: 'fontStretch',
+  'font-stretch': 'fontStretch',
+  fontstyle: 'fontStyle',
+  'font-style': 'fontStyle',
+  fontvariant: 'fontVariant',
+  'font-variant': 'fontVariant',
+  fontweight: 'fontWeight',
+  'font-weight': 'fontWeight',
+  format: 'format',
+  from: 'from',
+  fx: 'fx',
+  fy: 'fy',
+  g1: 'g1',
+  g2: 'g2',
+  glyphname: 'glyphName',
+  'glyph-name': 'glyphName',
+  glyphorientationhorizontal: 'glyphOrientationHorizontal',
+  'glyph-orientation-horizontal': 'glyphOrientationHorizontal',
+  glyphorientationvertical: 'glyphOrientationVertical',
+  'glyph-orientation-vertical': 'glyphOrientationVertical',
+  glyphref: 'glyphRef',
+  gradienttransform: 'gradientTransform',
+  gradientunits: 'gradientUnits',
+  hanging: 'hanging',
+  horizadvx: 'horizAdvX',
+  'horiz-adv-x': 'horizAdvX',
+  horizoriginx: 'horizOriginX',
+  'horiz-origin-x': 'horizOriginX',
+  ideographic: 'ideographic',
+  imagerendering: 'imageRendering',
+  'image-rendering': 'imageRendering',
+  in2: 'in2',
+  in: 'in',
+  inlist: 'inlist',
+  intercept: 'intercept',
+  k1: 'k1',
+  k2: 'k2',
+  k3: 'k3',
+  k4: 'k4',
+  k: 'k',
+  kernelmatrix: 'kernelMatrix',
+  kernelunitlength: 'kernelUnitLength',
+  kerning: 'kerning',
+  keypoints: 'keyPoints',
+  keysplines: 'keySplines',
+  keytimes: 'keyTimes',
+  lengthadjust: 'lengthAdjust',
+  letterspacing: 'letterSpacing',
+  'letter-spacing': 'letterSpacing',
+  lightingcolor: 'lightingColor',
+  'lighting-color': 'lightingColor',
+  limitingconeangle: 'limitingConeAngle',
+  local: 'local',
+  markerend: 'markerEnd',
+  'marker-end': 'markerEnd',
+  markerheight: 'markerHeight',
+  markermid: 'markerMid',
+  'marker-mid': 'markerMid',
+  markerstart: 'markerStart',
+  'marker-start': 'markerStart',
+  markerunits: 'markerUnits',
+  markerwidth: 'markerWidth',
+  mask: 'mask',
+  maskcontentunits: 'maskContentUnits',
+  maskunits: 'maskUnits',
+  mathematical: 'mathematical',
+  mode: 'mode',
+  numoctaves: 'numOctaves',
+  offset: 'offset',
+  opacity: 'opacity',
+  operator: 'operator',
+  order: 'order',
+  orient: 'orient',
+  orientation: 'orientation',
+  origin: 'origin',
+  overflow: 'overflow',
+  overlineposition: 'overlinePosition',
+  'overline-position': 'overlinePosition',
+  overlinethickness: 'overlineThickness',
+  'overline-thickness': 'overlineThickness',
+  paintorder: 'paintOrder',
+  'paint-order': 'paintOrder',
+  panose1: 'panose1',
+  'panose-1': 'panose1',
+  pathlength: 'pathLength',
+  patterncontentunits: 'patternContentUnits',
+  patterntransform: 'patternTransform',
+  patternunits: 'patternUnits',
+  pointerevents: 'pointerEvents',
+  'pointer-events': 'pointerEvents',
+  points: 'points',
+  pointsatx: 'pointsAtX',
+  pointsaty: 'pointsAtY',
+  pointsatz: 'pointsAtZ',
+  prefix: 'prefix',
+  preservealpha: 'preserveAlpha',
+  preserveaspectratio: 'preserveAspectRatio',
+  primitiveunits: 'primitiveUnits',
+  property: 'property',
+  r: 'r',
+  radius: 'radius',
+  refx: 'refX',
+  refy: 'refY',
+  renderingintent: 'renderingIntent',
+  'rendering-intent': 'renderingIntent',
+  repeatcount: 'repeatCount',
+  repeatdur: 'repeatDur',
+  requiredextensions: 'requiredExtensions',
+  requiredfeatures: 'requiredFeatures',
+  resource: 'resource',
+  restart: 'restart',
+  result: 'result',
+  results: 'results',
+  rotate: 'rotate',
+  rx: 'rx',
+  ry: 'ry',
+  scale: 'scale',
+  security: 'security',
+  seed: 'seed',
+  shaperendering: 'shapeRendering',
+  'shape-rendering': 'shapeRendering',
+  slope: 'slope',
+  spacing: 'spacing',
+  specularconstant: 'specularConstant',
+  specularexponent: 'specularExponent',
+  speed: 'speed',
+  spreadmethod: 'spreadMethod',
+  startoffset: 'startOffset',
+  stddeviation: 'stdDeviation',
+  stemh: 'stemh',
+  stemv: 'stemv',
+  stitchtiles: 'stitchTiles',
+  stopcolor: 'stopColor',
+  'stop-color': 'stopColor',
+  stopopacity: 'stopOpacity',
+  'stop-opacity': 'stopOpacity',
+  strikethroughposition: 'strikethroughPosition',
+  'strikethrough-position': 'strikethroughPosition',
+  strikethroughthickness: 'strikethroughThickness',
+  'strikethrough-thickness': 'strikethroughThickness',
+  string: 'string',
+  stroke: 'stroke',
+  strokedasharray: 'strokeDasharray',
+  'stroke-dasharray': 'strokeDasharray',
+  strokedashoffset: 'strokeDashoffset',
+  'stroke-dashoffset': 'strokeDashoffset',
+  strokelinecap: 'strokeLinecap',
+  'stroke-linecap': 'strokeLinecap',
+  strokelinejoin: 'strokeLinejoin',
+  'stroke-linejoin': 'strokeLinejoin',
+  strokemiterlimit: 'strokeMiterlimit',
+  'stroke-miterlimit': 'strokeMiterlimit',
+  strokewidth: 'strokeWidth',
+  'stroke-width': 'strokeWidth',
+  strokeopacity: 'strokeOpacity',
+  'stroke-opacity': 'strokeOpacity',
+  suppresscontenteditablewarning: 'suppressContentEditableWarning',
+  suppresshydrationwarning: 'suppressHydrationWarning',
+  surfacescale: 'surfaceScale',
+  systemlanguage: 'systemLanguage',
+  tablevalues: 'tableValues',
+  targetx: 'targetX',
+  targety: 'targetY',
+  textanchor: 'textAnchor',
+  'text-anchor': 'textAnchor',
+  textdecoration: 'textDecoration',
+  'text-decoration': 'textDecoration',
+  textlength: 'textLength',
+  textrendering: 'textRendering',
+  'text-rendering': 'textRendering',
+  to: 'to',
+  transform: 'transform',
+  typeof: 'typeof',
+  u1: 'u1',
+  u2: 'u2',
+  underlineposition: 'underlinePosition',
+  'underline-position': 'underlinePosition',
+  underlinethickness: 'underlineThickness',
+  'underline-thickness': 'underlineThickness',
+  unicode: 'unicode',
+  unicodebidi: 'unicodeBidi',
+  'unicode-bidi': 'unicodeBidi',
+  unicoderange: 'unicodeRange',
+  'unicode-range': 'unicodeRange',
+  unitsperem: 'unitsPerEm',
+  'units-per-em': 'unitsPerEm',
+  unselectable: 'unselectable',
+  valphabetic: 'vAlphabetic',
+  'v-alphabetic': 'vAlphabetic',
+  values: 'values',
+  vectoreffect: 'vectorEffect',
+  'vector-effect': 'vectorEffect',
+  version: 'version',
+  vertadvy: 'vertAdvY',
+  'vert-adv-y': 'vertAdvY',
+  vertoriginx: 'vertOriginX',
+  'vert-origin-x': 'vertOriginX',
+  vertoriginy: 'vertOriginY',
+  'vert-origin-y': 'vertOriginY',
+  vhanging: 'vHanging',
+  'v-hanging': 'vHanging',
+  videographic: 'vIdeographic',
+  'v-ideographic': 'vIdeographic',
+  viewbox: 'viewBox',
+  viewtarget: 'viewTarget',
+  visibility: 'visibility',
+  vmathematical: 'vMathematical',
+  'v-mathematical': 'vMathematical',
+  vocab: 'vocab',
+  widths: 'widths',
+  wordspacing: 'wordSpacing',
+  'word-spacing': 'wordSpacing',
+  writingmode: 'writingMode',
+  'writing-mode': 'writingMode',
+  x1: 'x1',
+  x2: 'x2',
+  x: 'x',
+  xchannelselector: 'xChannelSelector',
+  xheight: 'xHeight',
+  'x-height': 'xHeight',
+  xlinkactuate: 'xlinkActuate',
+  'xlink:actuate': 'xlinkActuate',
+  xlinkarcrole: 'xlinkArcrole',
+  'xlink:arcrole': 'xlinkArcrole',
+  xlinkhref: 'xlinkHref',
+  'xlink:href': 'xlinkHref',
+  xlinkrole: 'xlinkRole',
+  'xlink:role': 'xlinkRole',
+  xlinkshow: 'xlinkShow',
+  'xlink:show': 'xlinkShow',
+  xlinktitle: 'xlinkTitle',
+  'xlink:title': 'xlinkTitle',
+  xlinktype: 'xlinkType',
+  'xlink:type': 'xlinkType',
+  xmlbase: 'xmlBase',
+  'xml:base': 'xmlBase',
+  xmllang: 'xmlLang',
+  'xml:lang': 'xmlLang',
+  xmlns: 'xmlns',
+  'xml:space': 'xmlSpace',
+  xmlnsxlink: 'xmlnsXlink',
+  'xmlns:xlink': 'xmlnsXlink',
+  xmlspace: 'xmlSpace',
+  y1: 'y1',
+  y2: 'y2',
+  y: 'y',
+  ychannelselector: 'yChannelSelector',
+  z: 'z',
+  zoomandpan: 'zoomAndPan'
+};
+
+var ariaProperties = {
+  'aria-current': 0,
+  // state
+  'aria-details': 0,
+  'aria-disabled': 0,
+  // state
+  'aria-hidden': 0,
+  // state
+  'aria-invalid': 0,
+  // state
+  'aria-keyshortcuts': 0,
+  'aria-label': 0,
+  'aria-roledescription': 0,
+  // Widget Attributes
+  'aria-autocomplete': 0,
+  'aria-checked': 0,
+  'aria-expanded': 0,
+  'aria-haspopup': 0,
+  'aria-level': 0,
+  'aria-modal': 0,
+  'aria-multiline': 0,
+  'aria-multiselectable': 0,
+  'aria-orientation': 0,
+  'aria-placeholder': 0,
+  'aria-pressed': 0,
+  'aria-readonly': 0,
+  'aria-required': 0,
+  'aria-selected': 0,
+  'aria-sort': 0,
+  'aria-valuemax': 0,
+  'aria-valuemin': 0,
+  'aria-valuenow': 0,
+  'aria-valuetext': 0,
+  // Live Region Attributes
+  'aria-atomic': 0,
+  'aria-busy': 0,
+  'aria-live': 0,
+  'aria-relevant': 0,
+  // Drag-and-Drop Attributes
+  'aria-dropeffect': 0,
+  'aria-grabbed': 0,
+  // Relationship Attributes
+  'aria-activedescendant': 0,
+  'aria-colcount': 0,
+  'aria-colindex': 0,
+  'aria-colspan': 0,
+  'aria-controls': 0,
+  'aria-describedby': 0,
+  'aria-errormessage': 0,
+  'aria-flowto': 0,
+  'aria-labelledby': 0,
+  'aria-owns': 0,
+  'aria-posinset': 0,
+  'aria-rowcount': 0,
+  'aria-rowindex': 0,
+  'aria-rowspan': 0,
+  'aria-setsize': 0
+};
+
+var warnedProperties = {};
+var rARIA = new RegExp('^(aria)-[' + ATTRIBUTE_NAME_CHAR + ']*$');
+var rARIACamel = new RegExp('^(aria)[A-Z][' + ATTRIBUTE_NAME_CHAR + ']*$');
+var hasOwnProperty$1 = Object.prototype.hasOwnProperty;
+
+function validateProperty(tagName, name) {
+  {
+    if (hasOwnProperty$1.call(warnedProperties, name) && warnedProperties[name]) {
+      return true;
+    }
+
+    if (rARIACamel.test(name)) {
+      var ariaName = 'aria-' + name.slice(4).toLowerCase();
+      var correctName = ariaProperties.hasOwnProperty(ariaName) ? ariaName : null; // If this is an aria-* attribute, but is not listed in the known DOM
+      // DOM properties, then it is an invalid aria-* attribute.
+
+      if (correctName == null) {
+        error('Invalid ARIA attribute `%s`. ARIA attributes follow the pattern aria-* and must be lowercase.', name);
+
+        warnedProperties[name] = true;
+        return true;
+      } // aria-* attributes should be lowercase; suggest the lowercase version.
+
+
+      if (name !== correctName) {
+        error('Invalid ARIA attribute `%s`. Did you mean `%s`?', name, correctName);
+
+        warnedProperties[name] = true;
+        return true;
+      }
+    }
+
+    if (rARIA.test(name)) {
+      var lowerCasedName = name.toLowerCase();
+      var standardName = ariaProperties.hasOwnProperty(lowerCasedName) ? lowerCasedName : null; // If this is an aria-* attribute, but is not listed in the known DOM
+      // DOM properties, then it is an invalid aria-* attribute.
+
+      if (standardName == null) {
+        warnedProperties[name] = true;
+        return false;
+      } // aria-* attributes should be lowercase; suggest the lowercase version.
+
+
+      if (name !== standardName) {
+        error('Unknown ARIA attribute `%s`. Did you mean `%s`?', name, standardName);
+
+        warnedProperties[name] = true;
+        return true;
+      }
+    }
+  }
+
+  return true;
+}
+
+function warnInvalidARIAProps(type, props) {
+  {
+    var invalidProps = [];
+
+    for (var key in props) {
+      var isValid = validateProperty(type, key);
+
+      if (!isValid) {
+        invalidProps.push(key);
+      }
+    }
+
+    var unknownPropString = invalidProps.map(function (prop) {
+      return '`' + prop + '`';
+    }).join(', ');
+
+    if (invalidProps.length === 1) {
+      error('Invalid aria prop %s on <%s> tag. ' + 'For details, see https://fb.me/invalid-aria-prop', unknownPropString, type);
+    } else if (invalidProps.length > 1) {
+      error('Invalid aria props %s on <%s> tag. ' + 'For details, see https://fb.me/invalid-aria-prop', unknownPropString, type);
+    }
+  }
+}
+
+function validateProperties(type, props) {
+  if (isCustomComponent(type, props)) {
+    return;
+  }
+
+  warnInvalidARIAProps(type, props);
+}
+
+var didWarnValueNull = false;
+function validateProperties$1(type, props) {
+  {
+    if (type !== 'input' && type !== 'textarea' && type !== 'select') {
+      return;
+    }
+
+    if (props != null && props.value === null && !didWarnValueNull) {
+      didWarnValueNull = true;
+
+      if (type === 'select' && props.multiple) {
+        error('`value` prop on `%s` should not be null. ' + 'Consider using an empty array when `multiple` is set to `true` ' + 'to clear the component or `undefined` for uncontrolled components.', type);
+      } else {
+        error('`value` prop on `%s` should not be null. ' + 'Consider using an empty string to clear the component or `undefined` ' + 'for uncontrolled components.', type);
+      }
+    }
+  }
+}
+
+var validateProperty$1 = function () {};
+
+{
+  var warnedProperties$1 = {};
+  var _hasOwnProperty = Object.prototype.hasOwnProperty;
+  var EVENT_NAME_REGEX = /^on./;
+  var INVALID_EVENT_NAME_REGEX = /^on[^A-Z]/;
+  var rARIA$1 = new RegExp('^(aria)-[' + ATTRIBUTE_NAME_CHAR + ']*$');
+  var rARIACamel$1 = new RegExp('^(aria)[A-Z][' + ATTRIBUTE_NAME_CHAR + ']*$');
+
+  validateProperty$1 = function (tagName, name, value, canUseEventSystem) {
+    if (_hasOwnProperty.call(warnedProperties$1, name) && warnedProperties$1[name]) {
+      return true;
+    }
+
+    var lowerCasedName = name.toLowerCase();
+
+    if (lowerCasedName === 'onfocusin' || lowerCasedName === 'onfocusout') {
+      error('React uses onFocus and onBlur instead of onFocusIn and onFocusOut. ' + 'All React events are normalized to bubble, so onFocusIn and onFocusOut ' + 'are not needed/supported by React.');
+
+      warnedProperties$1[name] = true;
+      return true;
+    } // We can't rely on the event system being injected on the server.
+
+
+    if (canUseEventSystem) {
+      if (registrationNameModules.hasOwnProperty(name)) {
+        return true;
+      }
+
+      var registrationName = possibleRegistrationNames.hasOwnProperty(lowerCasedName) ? possibleRegistrationNames[lowerCasedName] : null;
+
+      if (registrationName != null) {
+        error('Invalid event handler property `%s`. Did you mean `%s`?', name, registrationName);
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+
+      if (EVENT_NAME_REGEX.test(name)) {
+        error('Unknown event handler property `%s`. It will be ignored.', name);
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+    } else if (EVENT_NAME_REGEX.test(name)) {
+      // If no event plugins have been injected, we are in a server environment.
+      // So we can't tell if the event name is correct for sure, but we can filter
+      // out known bad ones like `onclick`. We can't suggest a specific replacement though.
+      if (INVALID_EVENT_NAME_REGEX.test(name)) {
+        error('Invalid event handler property `%s`. ' + 'React events use the camelCase naming convention, for example `onClick`.', name);
+      }
+
+      warnedProperties$1[name] = true;
+      return true;
+    } // Let the ARIA attribute hook validate ARIA attributes
+
+
+    if (rARIA$1.test(name) || rARIACamel$1.test(name)) {
+      return true;
+    }
+
+    if (lowerCasedName === 'innerhtml') {
+      error('Directly setting property `innerHTML` is not permitted. ' + 'For more information, lookup documentation on `dangerouslySetInnerHTML`.');
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    if (lowerCasedName === 'aria') {
+      error('The `aria` attribute is reserved for future use in React. ' + 'Pass individual `aria-` attributes instead.');
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    if (lowerCasedName === 'is' && value !== null && value !== undefined && typeof value !== 'string') {
+      error('Received a `%s` for a string attribute `is`. If this is expected, cast ' + 'the value to a string.', typeof value);
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    if (typeof value === 'number' && isNaN(value)) {
+      error('Received NaN for the `%s` attribute. If this is expected, cast ' + 'the value to a string.', name);
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    var propertyInfo = getPropertyInfo(name);
+    var isReserved = propertyInfo !== null && propertyInfo.type === RESERVED; // Known attributes should match the casing specified in the property config.
+
+    if (possibleStandardNames.hasOwnProperty(lowerCasedName)) {
+      var standardName = possibleStandardNames[lowerCasedName];
+
+      if (standardName !== name) {
+        error('Invalid DOM property `%s`. Did you mean `%s`?', name, standardName);
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+    } else if (!isReserved && name !== lowerCasedName) {
+      // Unknown attributes should have lowercase casing since that's how they
+      // will be cased anyway with server rendering.
+      error('React does not recognize the `%s` prop on a DOM element. If you ' + 'intentionally want it to appear in the DOM as a custom ' + 'attribute, spell it as lowercase `%s` instead. ' + 'If you accidentally passed it from a parent component, remove ' + 'it from the DOM element.', name, lowerCasedName);
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    if (typeof value === 'boolean' && shouldRemoveAttributeWithWarning(name, value, propertyInfo, false)) {
+      if (value) {
+        error('Received `%s` for a non-boolean attribute `%s`.\n\n' + 'If you want to write it to the DOM, pass a string instead: ' + '%s="%s" or %s={value.toString()}.', value, name, name, value, name);
+      } else {
+        error('Received `%s` for a non-boolean attribute `%s`.\n\n' + 'If you want to write it to the DOM, pass a string instead: ' + '%s="%s" or %s={value.toString()}.\n\n' + 'If you used to conditionally omit it with %s={condition && value}, ' + 'pass %s={condition ? value : undefined} instead.', value, name, name, value, name, name, name);
+      }
+
+      warnedProperties$1[name] = true;
+      return true;
+    } // Now that we've validated casing, do not validate
+    // data types for reserved props
+
+
+    if (isReserved) {
+      return true;
+    } // Warn when a known attribute is a bad type
+
+
+    if (shouldRemoveAttributeWithWarning(name, value, propertyInfo, false)) {
+      warnedProperties$1[name] = true;
+      return false;
+    } // Warn when passing the strings 'false' or 'true' into a boolean prop
+
+
+    if ((value === 'false' || value === 'true') && propertyInfo !== null && propertyInfo.type === BOOLEAN) {
+      error('Received the string `%s` for the boolean attribute `%s`. ' + '%s ' + 'Did you mean %s={%s}?', value, name, value === 'false' ? 'The browser will interpret it as a truthy value.' : 'Although this works, it will not work as expected if you pass the string "false".', name, value);
+
+      warnedProperties$1[name] = true;
+      return true;
+    }
+
+    return true;
+  };
+}
+
+var warnUnknownProperties = function (type, props, canUseEventSystem) {
+  {
+    var unknownProps = [];
+
+    for (var key in props) {
+      var isValid = validateProperty$1(type, key, props[key], canUseEventSystem);
+
+      if (!isValid) {
+        unknownProps.push(key);
+      }
+    }
+
+    var unknownPropString = unknownProps.map(function (prop) {
+      return '`' + prop + '`';
+    }).join(', ');
+
+    if (unknownProps.length === 1) {
+      error('Invalid value for prop %s on <%s> tag. Either remove it from the element, ' + 'or pass a string or number value to keep it in the DOM. ' + 'For details, see https://fb.me/react-attribute-behavior', unknownPropString, type);
+    } else if (unknownProps.length > 1) {
+      error('Invalid values for props %s on <%s> tag. Either remove them from the element, ' + 'or pass a string or number value to keep them in the DOM. ' + 'For details, see https://fb.me/react-attribute-behavior', unknownPropString, type);
+    }
+  }
+};
+
+function validateProperties$2(type, props, canUseEventSystem) {
+  if (isCustomComponent(type, props)) {
+    return;
+  }
+
+  warnUnknownProperties(type, props, canUseEventSystem);
+}
+
+var didWarnInvalidHydration = false;
+var DANGEROUSLY_SET_INNER_HTML = 'dangerouslySetInnerHTML';
+var SUPPRESS_CONTENT_EDITABLE_WARNING = 'suppressContentEditableWarning';
+var SUPPRESS_HYDRATION_WARNING = 'suppressHydrationWarning';
+var AUTOFOCUS = 'autoFocus';
+var CHILDREN = 'children';
+var STYLE = 'style';
+var HTML$1 = '__html';
+var HTML_NAMESPACE$1 = Namespaces.html;
+var warnedUnknownTags;
+var suppressHydrationWarning;
+var validatePropertiesInDevelopment;
+var warnForTextDifference;
+var warnForPropDifference;
+var warnForExtraAttributes;
+var warnForInvalidEventListener;
+var canDiffStyleForHydrationWarning;
+var normalizeMarkupForTextOrAttribute;
+var normalizeHTML;
+
+{
+  warnedUnknownTags = {
+    // Chrome is the only major browser not shipping <time>. But as of July
+    // 2017 it intends to ship it due to widespread usage. We intentionally
+    // *don't* warn for <time> even if it's unrecognized by Chrome because
+    // it soon will be, and many apps have been using it anyway.
+    time: true,
+    // There are working polyfills for <dialog>. Let people use it.
+    dialog: true,
+    // Electron ships a custom <webview> tag to display external web content in
+    // an isolated frame and process.
+    // This tag is not present in non Electron environments such as JSDom which
+    // is often used for testing purposes.
+    // @see https://electronjs.org/docs/api/webview-tag
+    webview: true
+  };
+
+  validatePropertiesInDevelopment = function (type, props) {
+    validateProperties(type, props);
+    validateProperties$1(type, props);
+    validateProperties$2(type, props,
+    /* canUseEventSystem */
+    true);
+  }; // IE 11 parses & normalizes the style attribute as opposed to other
+  // browsers. It adds spaces and sorts the properties in some
+  // non-alphabetical order. Handling that would require sorting CSS
+  // properties in the client & server versions or applying
+  // `expectedStyle` to a temporary DOM node to read its `style` attribute
+  // normalized. Since it only affects IE, we're skipping style warnings
+  // in that browser completely in favor of doing all that work.
+  // See https://github.com/facebook/react/issues/11807
+
+
+  canDiffStyleForHydrationWarning = canUseDOM && !document.documentMode; // HTML parsing normalizes CR and CRLF to LF.
+  // It also can turn \u0000 into \uFFFD inside attributes.
+  // https://www.w3.org/TR/html5/single-page.html#preprocessing-the-input-stream
+  // If we have a mismatch, it might be caused by that.
+  // We will still patch up in this case but not fire the warning.
+
+  var NORMALIZE_NEWLINES_REGEX = /\r\n?/g;
+  var NORMALIZE_NULL_AND_REPLACEMENT_REGEX = /\u0000|\uFFFD/g;
+
+  normalizeMarkupForTextOrAttribute = function (markup) {
+    var markupString = typeof markup === 'string' ? markup : '' + markup;
+    return markupString.replace(NORMALIZE_NEWLINES_REGEX, '\n').replace(NORMALIZE_NULL_AND_REPLACEMENT_REGEX, '');
+  };
+
+  warnForTextDifference = function (serverText, clientText) {
+    if (didWarnInvalidHydration) {
+      return;
+    }
+
+    var normalizedClientText = normalizeMarkupForTextOrAttribute(clientText);
+    var normalizedServerText = normalizeMarkupForTextOrAttribute(serverText);
+
+    if (normalizedServerText === normalizedClientText) {
+      return;
+    }
+
+    didWarnInvalidHydration = true;
+
+    error('Text content did not match. Server: "%s" Client: "%s"', normalizedServerText, normalizedClientText);
+  };
+
+  warnForPropDifference = function (propName, serverValue, clientValue) {
+    if (didWarnInvalidHydration) {
+      return;
+    }
+
+    var normalizedClientValue = normalizeMarkupForTextOrAttribute(clientValue);
+    var normalizedServerValue = normalizeMarkupForTextOrAttribute(serverValue);
+
+    if (normalizedServerValue === normalizedClientValue) {
+      return;
+    }
+
+    didWarnInvalidHydration = true;
+
+    error('Prop `%s` did not match. Server: %s Client: %s', propName, JSON.stringify(normalizedServerValue), JSON.stringify(normalizedClientValue));
+  };
+
+  warnForExtraAttributes = function (attributeNames) {
+    if (didWarnInvalidHydration) {
+      return;
+    }
+
+    didWarnInvalidHydration = true;
+    var names = [];
+    attributeNames.forEach(function (name) {
+      names.push(name);
+    });
+
+    error('Extra attributes from the server: %s', names);
+  };
+
+  warnForInvalidEventListener = function (registrationName, listener) {
+    if (listener === false) {
+      error('Expected `%s` listener to be a function, instead got `false`.\n\n' + 'If you used to conditionally omit it with %s={condition && value}, ' + 'pass %s={condition ? value : undefined} instead.', registrationName, registrationName, registrationName);
+    } else {
+      error('Expected `%s` listener to be a function, instead got a value of `%s` type.', registrationName, typeof listener);
+    }
+  }; // Parse the HTML and read it back to normalize the HTML string so that it
+  // can be used for comparison.
+
+
+  normalizeHTML = function (parent, html) {
+    // We could have created a separate document here to avoid
+    // re-initializing custom elements if they exist. But this breaks
+    // how <noscript> is being handled. So we use the same document.
+    // See the discussion in https://github.com/facebook/react/pull/11157.
+    var testElement = parent.namespaceURI === HTML_NAMESPACE$1 ? parent.ownerDocument.createElement(parent.tagName) : parent.ownerDocument.createElementNS(parent.namespaceURI, parent.tagName);
+    testElement.innerHTML = html;
+    return testElement.innerHTML;
+  };
+}
+
+function ensureListeningTo(rootContainerElement, registrationName) {
+  var isDocumentOrFragment = rootContainerElement.nodeType === DOCUMENT_NODE || rootContainerElement.nodeType === DOCUMENT_FRAGMENT_NODE;
+  var doc = isDocumentOrFragment ? rootContainerElement : rootContainerElement.ownerDocument;
+  legacyListenToEvent(registrationName, doc);
+}
+
+function getOwnerDocumentFromRootContainer(rootContainerElement) {
+  return rootContainerElement.nodeType === DOCUMENT_NODE ? rootContainerElement : rootContainerElement.ownerDocument;
+}
+
+function noop() {}
+
+function trapClickOnNonInteractiveElement(node) {
+  // Mobile Safari does not fire properly bubble click events on
+  // non-interactive elements, which means delegated click listeners do not
+  // fire. The workaround for this bug involves attaching an empty click
+  // listener on the target node.
+  // http://www.quirksmode.org/blog/archives/2010/09/click_event_del.html
+  // Just set it using the onclick property so that we don't have to manage any
+  // bookkeeping for it. Not sure if we need to clear it when the listener is
+  // removed.
+  // TODO: Only do this for the relevant Safaris maybe?
+  node.onclick = noop;
+}
+
+function setInitialDOMProperties(tag, domElement, rootContainerElement, nextProps, isCustomComponentTag) {
+  for (var propKey in nextProps) {
+    if (!nextProps.hasOwnProperty(propKey)) {
+      continue;
+    }
+
+    var nextProp = nextProps[propKey];
+
+    if (propKey === STYLE) {
+      {
+        if (nextProp) {
+          // Freeze the next style object so that we can assume it won't be
+          // mutated. We have already warned for this in the past.
+          Object.freeze(nextProp);
+        }
+      } // Relies on `updateStylesByID` not mutating `styleUpdates`.
+
+
+      setValueForStyles(domElement, nextProp);
+    } else if (propKey === DANGEROUSLY_SET_INNER_HTML) {
+      var nextHtml = nextProp ? nextProp[HTML$1] : undefined;
+
+      if (nextHtml != null) {
+        setInnerHTML(domElement, nextHtml);
+      }
+    } else if (propKey === CHILDREN) {
+      if (typeof nextProp === 'string') {
+        // Avoid setting initial textContent when the text is empty. In IE11 setting
+        // textContent on a <textarea> will cause the placeholder to not
+        // show within the <textarea> until it has been focused and blurred again.
+        // https://github.com/facebook/react/issues/6731#issuecomment-254874553
+        var canSetTextContent = tag !== 'textarea' || nextProp !== '';
+
+        if (canSetTextContent) {
+          setTextContent(domElement, nextProp);
+        }
+      } else if (typeof nextProp === 'number') {
+        setTextContent(domElement, '' + nextProp);
+      }
+    } else if ( propKey === SUPPRESS_CONTENT_EDITABLE_WARNING || propKey === SUPPRESS_HYDRATION_WARNING) ; else if (propKey === AUTOFOCUS) ; else if (registrationNameModules.hasOwnProperty(propKey)) {
+      if (nextProp != null) {
+        if ( typeof nextProp !== 'function') {
+          warnForInvalidEventListener(propKey, nextProp);
+        }
+
+        ensureListeningTo(rootContainerElement, propKey);
+      }
+    } else if (nextProp != null) {
+      setValueForProperty(domElement, propKey, nextProp, isCustomComponentTag);
+    }
+  }
+}
+
+function updateDOMProperties(domElement, updatePayload, wasCustomComponentTag, isCustomComponentTag) {
+  // TODO: Handle wasCustomComponentTag
+  for (var i = 0; i < updatePayload.length; i += 2) {
+    var propKey = updatePayload[i];
+    var propValue = updatePayload[i + 1];
+
+    if (propKey === STYLE) {
+      setValueForStyles(domElement, propValue);
+    } else if (propKey === DANGEROUSLY_SET_INNER_HTML) {
+      setInnerHTML(domElement, propValue);
+    } else if (propKey === CHILDREN) {
+      setTextContent(domElement, propValue);
+    } else {
+      setValueForProperty(domElement, propKey, propValue, isCustomComponentTag);
+    }
+  }
+}
+
+function createElement(type, props, rootContainerElement, parentNamespace) {
+  var isCustomComponentTag; // We create tags in the namespace of their parent container, except HTML
+  // tags get no namespace.
+
+  var ownerDocument = getOwnerDocumentFromRootContainer(rootContainerElement);
+  var domElement;
+  var namespaceURI = parentNamespace;
+
+  if (namespaceURI === HTML_NAMESPACE$1) {
+    namespaceURI = getIntrinsicNamespace(type);
+  }
+
+  if (namespaceURI === HTML_NAMESPACE$1) {
+    {
+      isCustomComponentTag = isCustomComponent(type, props); // Should this check be gated by parent namespace? Not sure we want to
+      // allow <SVG> or <mATH>.
+
+      if (!isCustomComponentTag && type !== type.toLowerCase()) {
+        error('<%s /> is using incorrect casing. ' + 'Use PascalCase for React components, ' + 'or lowercase for HTML elements.', type);
+      }
+    }
+
+    if (type === 'script') {
+      // Create the script via .innerHTML so its "parser-inserted" flag is
+      // set to true and it does not execute
+      var div = ownerDocument.createElement('div');
+
+      div.innerHTML = '<script><' + '/script>'; // eslint-disable-line
+      // This is guaranteed to yield a script element.
+
+      var firstChild = div.firstChild;
+      domElement = div.removeChild(firstChild);
+    } else if (typeof props.is === 'string') {
+      // $FlowIssue `createElement` should be updated for Web Components
+      domElement = ownerDocument.createElement(type, {
+        is: props.is
+      });
+    } else {
+      // Separate else branch instead of using `props.is || undefined` above because of a Firefox bug.
+      // See discussion in https://github.com/facebook/react/pull/6896
+      // and discussion in https://bugzilla.mozilla.org/show_bug.cgi?id=1276240
+      domElement = ownerDocument.createElement(type); // Normally attributes are assigned in `setInitialDOMProperties`, however the `multiple` and `size`
+      // attributes on `select`s needs to be added before `option`s are inserted.
+      // This prevents:
+      // - a bug where the `select` does not scroll to the correct option because singular
+      //  `select` elements automatically pick the first item #13222
+      // - a bug where the `select` set the first item as selected despite the `size` attribute #14239
+      // See https://github.com/facebook/react/issues/13222
+      // and https://github.com/facebook/react/issues/14239
+
+      if (type === 'select') {
+        var node = domElement;
+
+        if (props.multiple) {
+          node.multiple = true;
+        } else if (props.size) {
+          // Setting a size greater than 1 causes a select to behave like `multiple=true`, where
+          // it is possible that no option is selected.
+          //
+          // This is only necessary when a select in "single selection mode".
+          node.size = props.size;
+        }
+      }
+    }
+  } else {
+    domElement = ownerDocument.createElementNS(namespaceURI, type);
+  }
+
+  {
+    if (namespaceURI === HTML_NAMESPACE$1) {
+      if (!isCustomComponentTag && Object.prototype.toString.call(domElement) === '[object HTMLUnknownElement]' && !Object.prototype.hasOwnProperty.call(warnedUnknownTags, type)) {
+        warnedUnknownTags[type] = true;
+
+        error('The tag <%s> is unrecognized in this browser. ' + 'If you meant to render a React component, start its name with ' + 'an uppercase letter.', type);
+      }
+    }
+  }
+
+  return domElement;
+}
+function createTextNode(text, rootContainerElement) {
+  return getOwnerDocumentFromRootContainer(rootContainerElement).createTextNode(text);
+}
+function setInitialProperties(domElement, tag, rawProps, rootContainerElement) {
+  var isCustomComponentTag = isCustomComponent(tag, rawProps);
+
+  {
+    validatePropertiesInDevelopment(tag, rawProps);
+  } // TODO: Make sure that we check isMounted before firing any of these events.
+
+
+  var props;
+
+  switch (tag) {
+    case 'iframe':
+    case 'object':
+    case 'embed':
+      trapBubbledEvent(TOP_LOAD, domElement);
+      props = rawProps;
+      break;
+
+    case 'video':
+    case 'audio':
+      // Create listener for each media event
+      for (var i = 0; i < mediaEventTypes.length; i++) {
+        trapBubbledEvent(mediaEventTypes[i], domElement);
+      }
+
+      props = rawProps;
+      break;
+
+    case 'source':
+      trapBubbledEvent(TOP_ERROR, domElement);
+      props = rawProps;
+      break;
+
+    case 'img':
+    case 'image':
+    case 'link':
+      trapBubbledEvent(TOP_ERROR, domElement);
+      trapBubbledEvent(TOP_LOAD, domElement);
+      props = rawProps;
+      break;
+
+    case 'form':
+      trapBubbledEvent(TOP_RESET, domElement);
+      trapBubbledEvent(TOP_SUBMIT, domElement);
+      props = rawProps;
+      break;
+
+    case 'details':
+      trapBubbledEvent(TOP_TOGGLE, domElement);
+      props = rawProps;
+      break;
+
+    case 'input':
+      initWrapperState(domElement, rawProps);
+      props = getHostProps(domElement, rawProps);
+      trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening
+      // to onChange. Even if there is no listener.
+
+      ensureListeningTo(rootContainerElement, 'onChange');
+      break;
+
+    case 'option':
+      validateProps(domElement, rawProps);
+      props = getHostProps$1(domElement, rawProps);
+      break;
+
+    case 'select':
+      initWrapperState$1(domElement, rawProps);
+      props = getHostProps$2(domElement, rawProps);
+      trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening
+      // to onChange. Even if there is no listener.
+
+      ensureListeningTo(rootContainerElement, 'onChange');
+      break;
+
+    case 'textarea':
+      initWrapperState$2(domElement, rawProps);
+      props = getHostProps$3(domElement, rawProps);
+      trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening
+      // to onChange. Even if there is no listener.
+
+      ensureListeningTo(rootContainerElement, 'onChange');
+      break;
+
+    default:
+      props = rawProps;
+  }
+
+  assertValidProps(tag, props);
+  setInitialDOMProperties(tag, domElement, rootContainerElement, props, isCustomComponentTag);
+
+  switch (tag) {
+    case 'input':
+      // TODO: Make sure we check if this is still unmounted or do any clean
+      // up necessary since we never stop tracking anymore.
+      track(domElement);
+      postMountWrapper(domElement, rawProps, false);
+      break;
+
+    case 'textarea':
+      // TODO: Make sure we check if this is still unmounted or do any clean
+      // up necessary since we never stop tracking anymore.
+      track(domElement);
+      postMountWrapper$3(domElement);
+      break;
+
+    case 'option':
+      postMountWrapper$1(domElement, rawProps);
+      break;
+
+    case 'select':
+      postMountWrapper$2(domElement, rawProps);
+      break;
+
+    default:
+      if (typeof props.onClick === 'function') {
+        // TODO: This cast may not be sound for SVG, MathML or custom elements.
+        trapClickOnNonInteractiveElement(domElement);
+      }
+
+      break;
+  }
+} // Calculate the diff between the two objects.
+
+function diffProperties(domElement, tag, lastRawProps, nextRawProps, rootContainerElement) {
+  {
+    validatePropertiesInDevelopment(tag, nextRawProps);
+  }
+
+  var updatePayload = null;
+  var lastProps;
+  var nextProps;
+
+  switch (tag) {
+    case 'input':
+      lastProps = getHostProps(domElement, lastRawProps);
+      nextProps = getHostProps(domElement, nextRawProps);
+      updatePayload = [];
+      break;
+
+    case 'option':
+      lastProps = getHostProps$1(domElement, lastRawProps);
+      nextProps = getHostProps$1(domElement, nextRawProps);
+      updatePayload = [];
+      break;
+
+    case 'select':
+      lastProps = getHostProps$2(domElement, lastRawProps);
+      nextProps = getHostProps$2(domElement, nextRawProps);
+      updatePayload = [];
+      break;
+
+    case 'textarea':
+      lastProps = getHostProps$3(domElement, lastRawProps);
+      nextProps = getHostProps$3(domElement, nextRawProps);
+      updatePayload = [];
+      break;
+
+    default:
+      lastProps = lastRawProps;
+      nextProps = nextRawProps;
+
+      if (typeof lastProps.onClick !== 'function' && typeof nextProps.onClick === 'function') {
+        // TODO: This cast may not be sound for SVG, MathML or custom elements.
+        trapClickOnNonInteractiveElement(domElement);
+      }
+
+      break;
+  }
+
+  assertValidProps(tag, nextProps);
+  var propKey;
+  var styleName;
+  var styleUpdates = null;
+
+  for (propKey in lastProps) {
+    if (nextProps.hasOwnProperty(propKey) || !lastProps.hasOwnProperty(propKey) || lastProps[propKey] == null) {
+      continue;
+    }
+
+    if (propKey === STYLE) {
+      var lastStyle = lastProps[propKey];
+
+      for (styleName in lastStyle) {
+        if (lastStyle.hasOwnProperty(styleName)) {
+          if (!styleUpdates) {
+            styleUpdates = {};
+          }
+
+          styleUpdates[styleName] = '';
+        }
+      }
+    } else if (propKey === DANGEROUSLY_SET_INNER_HTML || propKey === CHILDREN) ; else if ( propKey === SUPPRESS_CONTENT_EDITABLE_WARNING || propKey === SUPPRESS_HYDRATION_WARNING) ; else if (propKey === AUTOFOCUS) ; else if (registrationNameModules.hasOwnProperty(propKey)) {
+      // This is a special case. If any listener updates we need to ensure
+      // that the "current" fiber pointer gets updated so we need a commit
+      // to update this element.
+      if (!updatePayload) {
+        updatePayload = [];
+      }
+    } else {
+      // For all other deleted properties we add it to the queue. We use
+      // the whitelist in the commit phase instead.
+      (updatePayload = updatePayload || []).push(propKey, null);
+    }
+  }
+
+  for (propKey in nextProps) {
+    var nextProp = nextProps[propKey];
+    var lastProp = lastProps != null ? lastProps[propKey] : undefined;
+
+    if (!nextProps.hasOwnProperty(propKey) || nextProp === lastProp || nextProp == null && lastProp == null) {
+      continue;
+    }
+
+    if (propKey === STYLE) {
+      {
+        if (nextProp) {
+          // Freeze the next style object so that we can assume it won't be
+          // mutated. We have already warned for this in the past.
+          Object.freeze(nextProp);
+        }
+      }
+
+      if (lastProp) {
+        // Unset styles on `lastProp` but not on `nextProp`.
+        for (styleName in lastProp) {
+          if (lastProp.hasOwnProperty(styleName) && (!nextProp || !nextProp.hasOwnProperty(styleName))) {
+            if (!styleUpdates) {
+              styleUpdates = {};
+            }
+
+            styleUpdates[styleName] = '';
+          }
+        } // Update styles that changed since `lastProp`.
+
+
+        for (styleName in nextProp) {
+          if (nextProp.hasOwnProperty(styleName) && lastProp[styleName] !== nextProp[styleName]) {
+            if (!styleUpdates) {
+              styleUpdates = {};
+            }
+
+            styleUpdates[styleName] = nextProp[styleName];
+          }
+        }
+      } else {
+        // Relies on `updateStylesByID` not mutating `styleUpdates`.
+        if (!styleUpdates) {
+          if (!updatePayload) {
+            updatePayload = [];
+          }
+
+          updatePayload.push(propKey, styleUpdates);
+        }
+
+        styleUpdates = nextProp;
+      }
+    } else if (propKey === DANGEROUSLY_SET_INNER_HTML) {
+      var nextHtml = nextProp ? nextProp[HTML$1] : undefined;
+      var lastHtml = lastProp ? lastProp[HTML$1] : undefined;
+
+      if (nextHtml != null) {
+        if (lastHtml !== nextHtml) {
+          (updatePayload = updatePayload || []).push(propKey, nextHtml);
+        }
+      }
+    } else if (propKey === CHILDREN) {
+      if (lastProp !== nextProp && (typeof nextProp === 'string' || typeof nextProp === 'number')) {
+        (updatePayload = updatePayload || []).push(propKey, '' + nextProp);
+      }
+    } else if ( propKey === SUPPRESS_CONTENT_EDITABLE_WARNING || propKey === SUPPRESS_HYDRATION_WARNING) ; else if (registrationNameModules.hasOwnProperty(propKey)) {
+      if (nextProp != null) {
+        // We eagerly listen to this even though we haven't committed yet.
+        if ( typeof nextProp !== 'function') {
+          warnForInvalidEventListener(propKey, nextProp);
+        }
+
+        ensureListeningTo(rootContainerElement, propKey);
+      }
+
+      if (!updatePayload && lastProp !== nextProp) {
+        // This is a special case. If any listener updates we need to ensure
+        // that the "current" props pointer gets updated so we need a commit
+        // to update this element.
+        updatePayload = [];
+      }
+    } else {
+      // For any other property we always add it to the queue and then we
+      // filter it out using the whitelist during the commit.
+      (updatePayload = updatePayload || []).push(propKey, nextProp);
+    }
+  }
+
+  if (styleUpdates) {
+    {
+      validateShorthandPropertyCollisionInDev(styleUpdates, nextProps[STYLE]);
+    }
+
+    (updatePayload = updatePayload || []).push(STYLE, styleUpdates);
+  }
+
+  return updatePayload;
+} // Apply the diff.
+
+function updateProperties(domElement, updatePayload, tag, lastRawProps, nextRawProps) {
+  // Update checked *before* name.
+  // In the middle of an update, it is possible to have multiple checked.
+  // When a checked radio tries to change name, browser makes another radio's checked false.
+  if (tag === 'input' && nextRawProps.type === 'radio' && nextRawProps.name != null) {
+    updateChecked(domElement, nextRawProps);
+  }
+
+  var wasCustomComponentTag = isCustomComponent(tag, lastRawProps);
+  var isCustomComponentTag = isCustomComponent(tag, nextRawProps); // Apply the diff.
+
+  updateDOMProperties(domElement, updatePayload, wasCustomComponentTag, isCustomComponentTag); // TODO: Ensure that an update gets scheduled if any of the special props
+  // changed.
+
+  switch (tag) {
+    case 'input':
+      // Update the wrapper around inputs *after* updating props. This has to
+      // happen after `updateDOMProperties`. Otherwise HTML5 input validations
+      // raise warnings and prevent the new value from being assigned.
+      updateWrapper(domElement, nextRawProps);
+      break;
+
+    case 'textarea':
+      updateWrapper$1(domElement, nextRawProps);
+      break;
+
+    case 'select':
+      // <select> value update needs to occur after <option> children
+      // reconciliation
+      postUpdateWrapper(domElement, nextRawProps);
+      break;
+  }
+}
+
+function getPossibleStandardName(propName) {
+  {
+    var lowerCasedName = propName.toLowerCase();
+
+    if (!possibleStandardNames.hasOwnProperty(lowerCasedName)) {
+      return null;
+    }
+
+    return possibleStandardNames[lowerCasedName] || null;
+  }
+}
+
+function diffHydratedProperties(domElement, tag, rawProps, parentNamespace, rootContainerElement) {
+  var isCustomComponentTag;
+  var extraAttributeNames;
+
+  {
+    suppressHydrationWarning = rawProps[SUPPRESS_HYDRATION_WARNING] === true;
+    isCustomComponentTag = isCustomComponent(tag, rawProps);
+    validatePropertiesInDevelopment(tag, rawProps);
+  } // TODO: Make sure that we check isMounted before firing any of these events.
+
+
+  switch (tag) {
+    case 'iframe':
+    case 'object':
+    case 'embed':
+      trapBubbledEvent(TOP_LOAD, domElement);
+      break;
+
+    case 'video':
+    case 'audio':
+      // Create listener for each media event
+      for (var i = 0; i < mediaEventTypes.length; i++) {
+        trapBubbledEvent(mediaEventTypes[i], domElement);
+      }
+
+      break;
+
+    case 'source':
+      trapBubbledEvent(TOP_ERROR, domElement);
+      break;
+
+    case 'img':
+    case 'image':
+    case 'link':
+      trapBubbledEvent(TOP_ERROR, domElement);
+      trapBubbledEvent(TOP_LOAD, domElement);
+      break;
+
+    case 'form':
+      trapBubbledEvent(TOP_RESET, domElement);
+      trapBubbledEvent(TOP_SUBMIT, domElement);
+      break;
+
+    case 'details':
+      trapBubbledEvent(TOP_TOGGLE, domElement);
+      break;
+
+    case 'input':
+      initWrapperState(domElement, rawProps);
+      trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening
+      // to onChange. Even if there is no listener.
+
+      ensureListeningTo(rootContainerElement, 'onChange');
+      break;
+
+    case 'option':
+      validateProps(domElement, rawProps);
+      break;
+
+    case 'select':
+      initWrapperState$1(domElement, rawProps);
+      trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening
+      // to onChange. Even if there is no listener.
+
+      ensureListeningTo(rootContainerElement, 'onChange');
+      break;
+
+    case 'textarea':
+      initWrapperState$2(domElement, rawProps);
+      trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening
+      // to onChange. Even if there is no listener.
+
+      ensureListeningTo(rootContainerElement, 'onChange');
+      break;
+  }
+
+  assertValidProps(tag, rawProps);
+
+  {
+    extraAttributeNames = new Set();
+    var attributes = domElement.attributes;
+
+    for (var _i = 0; _i < attributes.length; _i++) {
+      var name = attributes[_i].name.toLowerCase();
+
+      switch (name) {
+        // Built-in SSR attribute is whitelisted
+        case 'data-reactroot':
+          break;
+        // Controlled attributes are not validated
+        // TODO: Only ignore them on controlled tags.
+
+        case 'value':
+          break;
+
+        case 'checked':
+          break;
+
+        case 'selected':
+          break;
+
+        default:
+          // Intentionally use the original name.
+          // See discussion in https://github.com/facebook/react/pull/10676.
+          extraAttributeNames.add(attributes[_i].name);
+      }
+    }
+  }
+
+  var updatePayload = null;
+
+  for (var propKey in rawProps) {
+    if (!rawProps.hasOwnProperty(propKey)) {
+      continue;
+    }
+
+    var nextProp = rawProps[propKey];
+
+    if (propKey === CHILDREN) {
+      // For text content children we compare against textContent. This
+      // might match additional HTML that is hidden when we read it using
+      // textContent. E.g. "foo" will match "f<span>oo</span>" but that still
+      // satisfies our requirement. Our requirement is not to produce perfect
+      // HTML and attributes. Ideally we should preserve structure but it's
+      // ok not to if the visible content is still enough to indicate what
+      // even listeners these nodes might be wired up to.
+      // TODO: Warn if there is more than a single textNode as a child.
+      // TODO: Should we use domElement.firstChild.nodeValue to compare?
+      if (typeof nextProp === 'string') {
+        if (domElement.textContent !== nextProp) {
+          if ( !suppressHydrationWarning) {
+            warnForTextDifference(domElement.textContent, nextProp);
+          }
+
+          updatePayload = [CHILDREN, nextProp];
+        }
+      } else if (typeof nextProp === 'number') {
+        if (domElement.textContent !== '' + nextProp) {
+          if ( !suppressHydrationWarning) {
+            warnForTextDifference(domElement.textContent, nextProp);
+          }
+
+          updatePayload = [CHILDREN, '' + nextProp];
+        }
+      }
+    } else if (registrationNameModules.hasOwnProperty(propKey)) {
+      if (nextProp != null) {
+        if ( typeof nextProp !== 'function') {
+          warnForInvalidEventListener(propKey, nextProp);
+        }
+
+        ensureListeningTo(rootContainerElement, propKey);
+      }
+    } else if ( // Convince Flow we've calculated it (it's DEV-only in this method.)
+    typeof isCustomComponentTag === 'boolean') {
+      // Validate that the properties correspond to their expected values.
+      var serverValue = void 0;
+      var propertyInfo = getPropertyInfo(propKey);
+
+      if (suppressHydrationWarning) ; else if ( propKey === SUPPRESS_CONTENT_EDITABLE_WARNING || propKey === SUPPRESS_HYDRATION_WARNING || // Controlled attributes are not validated
+      // TODO: Only ignore them on controlled tags.
+      propKey === 'value' || propKey === 'checked' || propKey === 'selected') ; else if (propKey === DANGEROUSLY_SET_INNER_HTML) {
+        var serverHTML = domElement.innerHTML;
+        var nextHtml = nextProp ? nextProp[HTML$1] : undefined;
+        var expectedHTML = normalizeHTML(domElement, nextHtml != null ? nextHtml : '');
+
+        if (expectedHTML !== serverHTML) {
+          warnForPropDifference(propKey, serverHTML, expectedHTML);
+        }
+      } else if (propKey === STYLE) {
+        // $FlowFixMe - Should be inferred as not undefined.
+        extraAttributeNames.delete(propKey);
+
+        if (canDiffStyleForHydrationWarning) {
+          var expectedStyle = createDangerousStringForStyles(nextProp);
+          serverValue = domElement.getAttribute('style');
+
+          if (expectedStyle !== serverValue) {
+            warnForPropDifference(propKey, serverValue, expectedStyle);
+          }
+        }
+      } else if (isCustomComponentTag) {
+        // $FlowFixMe - Should be inferred as not undefined.
+        extraAttributeNames.delete(propKey.toLowerCase());
+        serverValue = getValueForAttribute(domElement, propKey, nextProp);
+
+        if (nextProp !== serverValue) {
+          warnForPropDifference(propKey, serverValue, nextProp);
+        }
+      } else if (!shouldIgnoreAttribute(propKey, propertyInfo, isCustomComponentTag) && !shouldRemoveAttribute(propKey, nextProp, propertyInfo, isCustomComponentTag)) {
+        var isMismatchDueToBadCasing = false;
+
+        if (propertyInfo !== null) {
+          // $FlowFixMe - Should be inferred as not undefined.
+          extraAttributeNames.delete(propertyInfo.attributeName);
+          serverValue = getValueForProperty(domElement, propKey, nextProp, propertyInfo);
+        } else {
+          var ownNamespace = parentNamespace;
+
+          if (ownNamespace === HTML_NAMESPACE$1) {
+            ownNamespace = getIntrinsicNamespace(tag);
+          }
+
+          if (ownNamespace === HTML_NAMESPACE$1) {
+            // $FlowFixMe - Should be inferred as not undefined.
+            extraAttributeNames.delete(propKey.toLowerCase());
+          } else {
+            var standardName = getPossibleStandardName(propKey);
+
+            if (standardName !== null && standardName !== propKey) {
+              // If an SVG prop is supplied with bad casing, it will
+              // be successfully parsed from HTML, but will produce a mismatch
+              // (and would be incorrectly rendered on the client).
+              // However, we already warn about bad casing elsewhere.
+              // So we'll skip the misleading extra mismatch warning in this case.
+              isMismatchDueToBadCasing = true; // $FlowFixMe - Should be inferred as not undefined.
+
+              extraAttributeNames.delete(standardName);
+            } // $FlowFixMe - Should be inferred as not undefined.
+
+
+            extraAttributeNames.delete(propKey);
+          }
+
+          serverValue = getValueForAttribute(domElement, propKey, nextProp);
+        }
+
+        if (nextProp !== serverValue && !isMismatchDueToBadCasing) {
+          warnForPropDifference(propKey, serverValue, nextProp);
+        }
+      }
+    }
+  }
+
+  {
+    // $FlowFixMe - Should be inferred as not undefined.
+    if (extraAttributeNames.size > 0 && !suppressHydrationWarning) {
+      // $FlowFixMe - Should be inferred as not undefined.
+      warnForExtraAttributes(extraAttributeNames);
+    }
+  }
+
+  switch (tag) {
+    case 'input':
+      // TODO: Make sure we check if this is still unmounted or do any clean
+      // up necessary since we never stop tracking anymore.
+      track(domElement);
+      postMountWrapper(domElement, rawProps, true);
+      break;
+
+    case 'textarea':
+      // TODO: Make sure we check if this is still unmounted or do any clean
+      // up necessary since we never stop tracking anymore.
+      track(domElement);
+      postMountWrapper$3(domElement);
+      break;
+
+    case 'select':
+    case 'option':
+      // For input and textarea we current always set the value property at
+      // post mount to force it to diverge from attributes. However, for
+      // option and select we don't quite do the same thing and select
+      // is not resilient to the DOM state changing so we don't do that here.
+      // TODO: Consider not doing this for input and textarea.
+      break;
+
+    default:
+      if (typeof rawProps.onClick === 'function') {
+        // TODO: This cast may not be sound for SVG, MathML or custom elements.
+        trapClickOnNonInteractiveElement(domElement);
+      }
+
+      break;
+  }
+
+  return updatePayload;
+}
+function diffHydratedText(textNode, text) {
+  var isDifferent = textNode.nodeValue !== text;
+  return isDifferent;
+}
+function warnForUnmatchedText(textNode, text) {
+  {
+    warnForTextDifference(textNode.nodeValue, text);
+  }
+}
+function warnForDeletedHydratableElement(parentNode, child) {
+  {
+    if (didWarnInvalidHydration) {
+      return;
+    }
+
+    didWarnInvalidHydration = true;
+
+    error('Did not expect server HTML to contain a <%s> in <%s>.', child.nodeName.toLowerCase(), parentNode.nodeName.toLowerCase());
+  }
+}
+function warnForDeletedHydratableText(parentNode, child) {
+  {
+    if (didWarnInvalidHydration) {
+      return;
+    }
+
+    didWarnInvalidHydration = true;
+
+    error('Did not expect server HTML to contain the text node "%s" in <%s>.', child.nodeValue, parentNode.nodeName.toLowerCase());
+  }
+}
+function warnForInsertedHydratedElement(parentNode, tag, props) {
+  {
+    if (didWarnInvalidHydration) {
+      return;
+    }
+
+    didWarnInvalidHydration = true;
+
+    error('Expected server HTML to contain a matching <%s> in <%s>.', tag, parentNode.nodeName.toLowerCase());
+  }
+}
+function warnForInsertedHydratedText(parentNode, text) {
+  {
+    if (text === '') {
+      // We expect to insert empty text nodes since they're not represented in
+      // the HTML.
+      // TODO: Remove this special case if we can just avoid inserting empty
+      // text nodes.
+      return;
+    }
+
+    if (didWarnInvalidHydration) {
+      return;
+    }
+
+    didWarnInvalidHydration = true;
+
+    error('Expected server HTML to contain a matching text node for "%s" in <%s>.', text, parentNode.nodeName.toLowerCase());
+  }
+}
+function restoreControlledState$3(domElement, tag, props) {
+  switch (tag) {
+    case 'input':
+      restoreControlledState(domElement, props);
+      return;
+
+    case 'textarea':
+      restoreControlledState$2(domElement, props);
+      return;
+
+    case 'select':
+      restoreControlledState$1(domElement, props);
+      return;
+  }
+}
+
+function getActiveElement(doc) {
+  doc = doc || (typeof document !== 'undefined' ? document : undefined);
+
+  if (typeof doc === 'undefined') {
+    return null;
+  }
+
+  try {
+    return doc.activeElement || doc.body;
+  } catch (e) {
+    return doc.body;
+  }
+}
+
+/**
+ * Given any node return the first leaf node without children.
+ *
+ * @param {DOMElement|DOMTextNode} node
+ * @return {DOMElement|DOMTextNode}
+ */
+
+function getLeafNode(node) {
+  while (node && node.firstChild) {
+    node = node.firstChild;
+  }
+
+  return node;
+}
+/**
+ * Get the next sibling within a container. This will walk up the
+ * DOM if a node's siblings have been exhausted.
+ *
+ * @param {DOMElement|DOMTextNode} node
+ * @return {?DOMElement|DOMTextNode}
+ */
+
+
+function getSiblingNode(node) {
+  while (node) {
+    if (node.nextSibling) {
+      return node.nextSibling;
+    }
+
+    node = node.parentNode;
+  }
+}
+/**
+ * Get object describing the nodes which contain characters at offset.
+ *
+ * @param {DOMElement|DOMTextNode} root
+ * @param {number} offset
+ * @return {?object}
+ */
+
+
+function getNodeForCharacterOffset(root, offset) {
+  var node = getLeafNode(root);
+  var nodeStart = 0;
+  var nodeEnd = 0;
+
+  while (node) {
+    if (node.nodeType === TEXT_NODE) {
+      nodeEnd = nodeStart + node.textContent.length;
+
+      if (nodeStart <= offset && nodeEnd >= offset) {
+        return {
+          node: node,
+          offset: offset - nodeStart
+        };
+      }
+
+      nodeStart = nodeEnd;
+    }
+
+    node = getLeafNode(getSiblingNode(node));
+  }
+}
+
+/**
+ * @param {DOMElement} outerNode
+ * @return {?object}
+ */
+
+function getOffsets(outerNode) {
+  var ownerDocument = outerNode.ownerDocument;
+  var win = ownerDocument && ownerDocument.defaultView || window;
+  var selection = win.getSelection && win.getSelection();
+
+  if (!selection || selection.rangeCount === 0) {
+    return null;
+  }
+
+  var anchorNode = selection.anchorNode,
+      anchorOffset = selection.anchorOffset,
+      focusNode = selection.focusNode,
+      focusOffset = selection.focusOffset; // In Firefox, anchorNode and focusNode can be "anonymous divs", e.g. the
+  // up/down buttons on an <input type="number">. Anonymous divs do not seem to
+  // expose properties, triggering a "Permission denied error" if any of its
+  // properties are accessed. The only seemingly possible way to avoid erroring
+  // is to access a property that typically works for non-anonymous divs and
+  // catch any error that may otherwise arise. See
+  // https://bugzilla.mozilla.org/show_bug.cgi?id=208427
+
+  try {
+    /* eslint-disable no-unused-expressions */
+    anchorNode.nodeType;
+    focusNode.nodeType;
+    /* eslint-enable no-unused-expressions */
+  } catch (e) {
+    return null;
+  }
+
+  return getModernOffsetsFromPoints(outerNode, anchorNode, anchorOffset, focusNode, focusOffset);
+}
+/**
+ * Returns {start, end} where `start` is the character/codepoint index of
+ * (anchorNode, anchorOffset) within the textContent of `outerNode`, and
+ * `end` is the index of (focusNode, focusOffset).
+ *
+ * Returns null if you pass in garbage input but we should probably just crash.
+ *
+ * Exported only for testing.
+ */
+
+function getModernOffsetsFromPoints(outerNode, anchorNode, anchorOffset, focusNode, focusOffset) {
+  var length = 0;
+  var start = -1;
+  var end = -1;
+  var indexWithinAnchor = 0;
+  var indexWithinFocus = 0;
+  var node = outerNode;
+  var parentNode = null;
+
+  outer: while (true) {
+    var next = null;
+
+    while (true) {
+      if (node === anchorNode && (anchorOffset === 0 || node.nodeType === TEXT_NODE)) {
+        start = length + anchorOffset;
+      }
+
+      if (node === focusNode && (focusOffset === 0 || node.nodeType === TEXT_NODE)) {
+        end = length + focusOffset;
+      }
+
+      if (node.nodeType === TEXT_NODE) {
+        length += node.nodeValue.length;
+      }
+
+      if ((next = node.firstChild) === null) {
+        break;
+      } // Moving from `node` to its first child `next`.
+
+
+      parentNode = node;
+      node = next;
+    }
+
+    while (true) {
+      if (node === outerNode) {
+        // If `outerNode` has children, this is always the second time visiting
+        // it. If it has no children, this is still the first loop, and the only
+        // valid selection is anchorNode and focusNode both equal to this node
+        // and both offsets 0, in which case we will have handled above.
+        break outer;
+      }
+
+      if (parentNode === anchorNode && ++indexWithinAnchor === anchorOffset) {
+        start = length;
+      }
+
+      if (parentNode === focusNode && ++indexWithinFocus === focusOffset) {
+        end = length;
+      }
+
+      if ((next = node.nextSibling) !== null) {
+        break;
+      }
+
+      node = parentNode;
+      parentNode = node.parentNode;
+    } // Moving from `node` to its next sibling `next`.
+
+
+    node = next;
+  }
+
+  if (start === -1 || end === -1) {
+    // This should never happen. (Would happen if the anchor/focus nodes aren't
+    // actually inside the passed-in node.)
+    return null;
+  }
+
+  return {
+    start: start,
+    end: end
+  };
+}
+/**
+ * In modern non-IE browsers, we can support both forward and backward
+ * selections.
+ *
+ * Note: IE10+ supports the Selection object, but it does not support
+ * the `extend` method, which means that even in modern IE, it's not possible
+ * to programmatically create a backward selection. Thus, for all IE
+ * versions, we use the old IE API to create our selections.
+ *
+ * @param {DOMElement|DOMTextNode} node
+ * @param {object} offsets
+ */
+
+function setOffsets(node, offsets) {
+  var doc = node.ownerDocument || document;
+  var win = doc && doc.defaultView || window; // Edge fails with "Object expected" in some scenarios.
+  // (For instance: TinyMCE editor used in a list component that supports pasting to add more,
+  // fails when pasting 100+ items)
+
+  if (!win.getSelection) {
+    return;
+  }
+
+  var selection = win.getSelection();
+  var length = node.textContent.length;
+  var start = Math.min(offsets.start, length);
+  var end = offsets.end === undefined ? start : Math.min(offsets.end, length); // IE 11 uses modern selection, but doesn't support the extend method.
+  // Flip backward selections, so we can set with a single range.
+
+  if (!selection.extend && start > end) {
+    var temp = end;
+    end = start;
+    start = temp;
+  }
+
+  var startMarker = getNodeForCharacterOffset(node, start);
+  var endMarker = getNodeForCharacterOffset(node, end);
+
+  if (startMarker && endMarker) {
+    if (selection.rangeCount === 1 && selection.anchorNode === startMarker.node && selection.anchorOffset === startMarker.offset && selection.focusNode === endMarker.node && selection.focusOffset === endMarker.offset) {
+      return;
+    }
+
+    var range = doc.createRange();
+    range.setStart(startMarker.node, startMarker.offset);
+    selection.removeAllRanges();
+
+    if (start > end) {
+      selection.addRange(range);
+      selection.extend(endMarker.node, endMarker.offset);
+    } else {
+      range.setEnd(endMarker.node, endMarker.offset);
+      selection.addRange(range);
+    }
+  }
+}
+
+function isTextNode(node) {
+  return node && node.nodeType === TEXT_NODE;
+}
+
+function containsNode(outerNode, innerNode) {
+  if (!outerNode || !innerNode) {
+    return false;
+  } else if (outerNode === innerNode) {
+    return true;
+  } else if (isTextNode(outerNode)) {
+    return false;
+  } else if (isTextNode(innerNode)) {
+    return containsNode(outerNode, innerNode.parentNode);
+  } else if ('contains' in outerNode) {
+    return outerNode.contains(innerNode);
+  } else if (outerNode.compareDocumentPosition) {
+    return !!(outerNode.compareDocumentPosition(innerNode) & 16);
+  } else {
+    return false;
+  }
+}
+
+function isInDocument(node) {
+  return node && node.ownerDocument && containsNode(node.ownerDocument.documentElement, node);
+}
+
+function isSameOriginFrame(iframe) {
+  try {
+    // Accessing the contentDocument of a HTMLIframeElement can cause the browser
+    // to throw, e.g. if it has a cross-origin src attribute.
+    // Safari will show an error in the console when the access results in "Blocked a frame with origin". e.g:
+    // iframe.contentDocument.defaultView;
+    // A safety way is to access one of the cross origin properties: Window or Location
+    // Which might result in "SecurityError" DOM Exception and it is compatible to Safari.
+    // https://html.spec.whatwg.org/multipage/browsers.html#integration-with-idl
+    return typeof iframe.contentWindow.location.href === 'string';
+  } catch (err) {
+    return false;
+  }
+}
+
+function getActiveElementDeep() {
+  var win = window;
+  var element = getActiveElement();
+
+  while (element instanceof win.HTMLIFrameElement) {
+    if (isSameOriginFrame(element)) {
+      win = element.contentWindow;
+    } else {
+      return element;
+    }
+
+    element = getActiveElement(win.document);
+  }
+
+  return element;
+}
+/**
+ * @ReactInputSelection: React input selection module. Based on Selection.js,
+ * but modified to be suitable for react and has a couple of bug fixes (doesn't
+ * assume buttons have range selections allowed).
+ * Input selection module for React.
+ */
+
+/**
+ * @hasSelectionCapabilities: we get the element types that support selection
+ * from https://html.spec.whatwg.org/#do-not-apply, looking at `selectionStart`
+ * and `selectionEnd` rows.
+ */
+
+
+function hasSelectionCapabilities(elem) {
+  var nodeName = elem && elem.nodeName && elem.nodeName.toLowerCase();
+  return nodeName && (nodeName === 'input' && (elem.type === 'text' || elem.type === 'search' || elem.type === 'tel' || elem.type === 'url' || elem.type === 'password') || nodeName === 'textarea' || elem.contentEditable === 'true');
+}
+function getSelectionInformation() {
+  var focusedElem = getActiveElementDeep();
+  return {
+    // Used by Flare
+    activeElementDetached: null,
+    focusedElem: focusedElem,
+    selectionRange: hasSelectionCapabilities(focusedElem) ? getSelection(focusedElem) : null
+  };
+}
+/**
+ * @restoreSelection: If any selection information was potentially lost,
+ * restore it. This is useful when performing operations that could remove dom
+ * nodes and place them back in, resulting in focus being lost.
+ */
+
+function restoreSelection(priorSelectionInformation) {
+  var curFocusedElem = getActiveElementDeep();
+  var priorFocusedElem = priorSelectionInformation.focusedElem;
+  var priorSelectionRange = priorSelectionInformation.selectionRange;
+
+  if (curFocusedElem !== priorFocusedElem && isInDocument(priorFocusedElem)) {
+    if (priorSelectionRange !== null && hasSelectionCapabilities(priorFocusedElem)) {
+      setSelection(priorFocusedElem, priorSelectionRange);
+    } // Focusing a node can change the scroll position, which is undesirable
+
+
+    var ancestors = [];
+    var ancestor = priorFocusedElem;
+
+    while (ancestor = ancestor.parentNode) {
+      if (ancestor.nodeType === ELEMENT_NODE) {
+        ancestors.push({
+          element: ancestor,
+          left: ancestor.scrollLeft,
+          top: ancestor.scrollTop
+        });
+      }
+    }
+
+    if (typeof priorFocusedElem.focus === 'function') {
+      priorFocusedElem.focus();
+    }
+
+    for (var i = 0; i < ancestors.length; i++) {
+      var info = ancestors[i];
+      info.element.scrollLeft = info.left;
+      info.element.scrollTop = info.top;
+    }
+  }
+}
+/**
+ * @getSelection: Gets the selection bounds of a focused textarea, input or
+ * contentEditable node.
+ * -@input: Look up selection bounds of this input
+ * -@return {start: selectionStart, end: selectionEnd}
+ */
+
+function getSelection(input) {
+  var selection;
+
+  if ('selectionStart' in input) {
+    // Modern browser with input or textarea.
+    selection = {
+      start: input.selectionStart,
+      end: input.selectionEnd
+    };
+  } else {
+    // Content editable or old IE textarea.
+    selection = getOffsets(input);
+  }
+
+  return selection || {
+    start: 0,
+    end: 0
+  };
+}
+/**
+ * @setSelection: Sets the selection bounds of a textarea or input and focuses
+ * the input.
+ * -@input     Set selection bounds of this input or textarea
+ * -@offsets   Object of same form that is returned from get*
+ */
+
+function setSelection(input, offsets) {
+  var start = offsets.start,
+      end = offsets.end;
+
+  if (end === undefined) {
+    end = start;
+  }
+
+  if ('selectionStart' in input) {
+    input.selectionStart = start;
+    input.selectionEnd = Math.min(end, input.value.length);
+  } else {
+    setOffsets(input, offsets);
+  }
+}
+
+var validateDOMNesting = function () {};
+
+var updatedAncestorInfo = function () {};
+
+{
+  // This validation code was written based on the HTML5 parsing spec:
+  // https://html.spec.whatwg.org/multipage/syntax.html#has-an-element-in-scope
+  //
+  // Note: this does not catch all invalid nesting, nor does it try to (as it's
+  // not clear what practical benefit doing so provides); instead, we warn only
+  // for cases where the parser will give a parse tree differing from what React
+  // intended. For example, <b><div></div></b> is invalid but we don't warn
+  // because it still parses correctly; we do warn for other cases like nested
+  // <p> tags where the beginning of the second element implicitly closes the
+  // first, causing a confusing mess.
+  // https://html.spec.whatwg.org/multipage/syntax.html#special
+  var specialTags = ['address', 'applet', 'area', 'article', 'aside', 'base', 'basefont', 'bgsound', 'blockquote', 'body', 'br', 'button', 'caption', 'center', 'col', 'colgroup', 'dd', 'details', 'dir', 'div', 'dl', 'dt', 'embed', 'fieldset', 'figcaption', 'figure', 'footer', 'form', 'frame', 'frameset', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'iframe', 'img', 'input', 'isindex', 'li', 'link', 'listing', 'main', 'marquee', 'menu', 'menuitem', 'meta', 'nav', 'noembed', 'noframes', 'noscript', 'object', 'ol', 'p', 'param', 'plaintext', 'pre', 'script', 'section', 'select', 'source', 'style', 'summary', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'title', 'tr', 'track', 'ul', 'wbr', 'xmp']; // https://html.spec.whatwg.org/multipage/syntax.html#has-an-element-in-scope
+
+  var inScopeTags = ['applet', 'caption', 'html', 'table', 'td', 'th', 'marquee', 'object', 'template', // https://html.spec.whatwg.org/multipage/syntax.html#html-integration-point
+  // TODO: Distinguish by namespace here -- for <title>, including it here
+  // errs on the side of fewer warnings
+  'foreignObject', 'desc', 'title']; // https://html.spec.whatwg.org/multipage/syntax.html#has-an-element-in-button-scope
+
+  var buttonScopeTags = inScopeTags.concat(['button']); // https://html.spec.whatwg.org/multipage/syntax.html#generate-implied-end-tags
+
+  var impliedEndTags = ['dd', 'dt', 'li', 'option', 'optgroup', 'p', 'rp', 'rt'];
+  var emptyAncestorInfo = {
+    current: null,
+    formTag: null,
+    aTagInScope: null,
+    buttonTagInScope: null,
+    nobrTagInScope: null,
+    pTagInButtonScope: null,
+    listItemTagAutoclosing: null,
+    dlItemTagAutoclosing: null
+  };
+
+  updatedAncestorInfo = function (oldInfo, tag) {
+    var ancestorInfo = _assign({}, oldInfo || emptyAncestorInfo);
+
+    var info = {
+      tag: tag
+    };
+
+    if (inScopeTags.indexOf(tag) !== -1) {
+      ancestorInfo.aTagInScope = null;
+      ancestorInfo.buttonTagInScope = null;
+      ancestorInfo.nobrTagInScope = null;
+    }
+
+    if (buttonScopeTags.indexOf(tag) !== -1) {
+      ancestorInfo.pTagInButtonScope = null;
+    } // See rules for 'li', 'dd', 'dt' start tags in
+    // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inbody
+
+
+    if (specialTags.indexOf(tag) !== -1 && tag !== 'address' && tag !== 'div' && tag !== 'p') {
+      ancestorInfo.listItemTagAutoclosing = null;
+      ancestorInfo.dlItemTagAutoclosing = null;
+    }
+
+    ancestorInfo.current = info;
+
+    if (tag === 'form') {
+      ancestorInfo.formTag = info;
+    }
+
+    if (tag === 'a') {
+      ancestorInfo.aTagInScope = info;
+    }
+
+    if (tag === 'button') {
+      ancestorInfo.buttonTagInScope = info;
+    }
+
+    if (tag === 'nobr') {
+      ancestorInfo.nobrTagInScope = info;
+    }
+
+    if (tag === 'p') {
+      ancestorInfo.pTagInButtonScope = info;
+    }
+
+    if (tag === 'li') {
+      ancestorInfo.listItemTagAutoclosing = info;
+    }
+
+    if (tag === 'dd' || tag === 'dt') {
+      ancestorInfo.dlItemTagAutoclosing = info;
+    }
+
+    return ancestorInfo;
+  };
+  /**
+   * Returns whether
+   */
+
+
+  var isTagValidWithParent = function (tag, parentTag) {
+    // First, let's check if we're in an unusual parsing mode...
+    switch (parentTag) {
+      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inselect
+      case 'select':
+        return tag === 'option' || tag === 'optgroup' || tag === '#text';
+
+      case 'optgroup':
+        return tag === 'option' || tag === '#text';
+      // Strictly speaking, seeing an <option> doesn't mean we're in a <select>
+      // but
+
+      case 'option':
+        return tag === '#text';
+      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-intd
+      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-incaption
+      // No special behavior since these rules fall back to "in body" mode for
+      // all except special table nodes which cause bad parsing behavior anyway.
+      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-intr
+
+      case 'tr':
+        return tag === 'th' || tag === 'td' || tag === 'style' || tag === 'script' || tag === 'template';
+      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-intbody
+
+      case 'tbody':
+      case 'thead':
+      case 'tfoot':
+        return tag === 'tr' || tag === 'style' || tag === 'script' || tag === 'template';
+      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-incolgroup
+
+      case 'colgroup':
+        return tag === 'col' || tag === 'template';
+      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-intable
+
+      case 'table':
+        return tag === 'caption' || tag === 'colgroup' || tag === 'tbody' || tag === 'tfoot' || tag === 'thead' || tag === 'style' || tag === 'script' || tag === 'template';
+      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inhead
+
+      case 'head':
+        return tag === 'base' || tag === 'basefont' || tag === 'bgsound' || tag === 'link' || tag === 'meta' || tag === 'title' || tag === 'noscript' || tag === 'noframes' || tag === 'style' || tag === 'script' || tag === 'template';
+      // https://html.spec.whatwg.org/multipage/semantics.html#the-html-element
+
+      case 'html':
+        return tag === 'head' || tag === 'body' || tag === 'frameset';
+
+      case 'frameset':
+        return tag === 'frame';
+
+      case '#document':
+        return tag === 'html';
+    } // Probably in the "in body" parsing mode, so we outlaw only tag combos
+    // where the parsing rules cause implicit opens or closes to be added.
+    // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inbody
+
+
+    switch (tag) {
+      case 'h1':
+      case 'h2':
+      case 'h3':
+      case 'h4':
+      case 'h5':
+      case 'h6':
+        return parentTag !== 'h1' && parentTag !== 'h2' && parentTag !== 'h3' && parentTag !== 'h4' && parentTag !== 'h5' && parentTag !== 'h6';
+
+      case 'rp':
+      case 'rt':
+        return impliedEndTags.indexOf(parentTag) === -1;
+
+      case 'body':
+      case 'caption':
+      case 'col':
+      case 'colgroup':
+      case 'frameset':
+      case 'frame':
+      case 'head':
+      case 'html':
+      case 'tbody':
+      case 'td':
+      case 'tfoot':
+      case 'th':
+      case 'thead':
+      case 'tr':
+        // These tags are only valid with a few parents that have special child
+        // parsing rules -- if we're down here, then none of those matched and
+        // so we allow it only if we don't know what the parent is, as all other
+        // cases are invalid.
+        return parentTag == null;
+    }
+
+    return true;
+  };
+  /**
+   * Returns whether
+   */
+
+
+  var findInvalidAncestorForTag = function (tag, ancestorInfo) {
+    switch (tag) {
+      case 'address':
+      case 'article':
+      case 'aside':
+      case 'blockquote':
+      case 'center':
+      case 'details':
+      case 'dialog':
+      case 'dir':
+      case 'div':
+      case 'dl':
+      case 'fieldset':
+      case 'figcaption':
+      case 'figure':
+      case 'footer':
+      case 'header':
+      case 'hgroup':
+      case 'main':
+      case 'menu':
+      case 'nav':
+      case 'ol':
+      case 'p':
+      case 'section':
+      case 'summary':
+      case 'ul':
+      case 'pre':
+      case 'listing':
+      case 'table':
+      case 'hr':
+      case 'xmp':
+      case 'h1':
+      case 'h2':
+      case 'h3':
+      case 'h4':
+      case 'h5':
+      case 'h6':
+        return ancestorInfo.pTagInButtonScope;
+
+      case 'form':
+        return ancestorInfo.formTag || ancestorInfo.pTagInButtonScope;
+
+      case 'li':
+        return ancestorInfo.listItemTagAutoclosing;
+
+      case 'dd':
+      case 'dt':
+        return ancestorInfo.dlItemTagAutoclosing;
+
+      case 'button':
+        return ancestorInfo.buttonTagInScope;
+
+      case 'a':
+        // Spec says something about storing a list of markers, but it sounds
+        // equivalent to this check.
+        return ancestorInfo.aTagInScope;
+
+      case 'nobr':
+        return ancestorInfo.nobrTagInScope;
+    }
+
+    return null;
+  };
+
+  var didWarn$1 = {};
+
+  validateDOMNesting = function (childTag, childText, ancestorInfo) {
+    ancestorInfo = ancestorInfo || emptyAncestorInfo;
+    var parentInfo = ancestorInfo.current;
+    var parentTag = parentInfo && parentInfo.tag;
+
+    if (childText != null) {
+      if (childTag != null) {
+        error('validateDOMNesting: when childText is passed, childTag should be null');
+      }
+
+      childTag = '#text';
+    }
+
+    var invalidParent = isTagValidWithParent(childTag, parentTag) ? null : parentInfo;
+    var invalidAncestor = invalidParent ? null : findInvalidAncestorForTag(childTag, ancestorInfo);
+    var invalidParentOrAncestor = invalidParent || invalidAncestor;
+
+    if (!invalidParentOrAncestor) {
+      return;
+    }
+
+    var ancestorTag = invalidParentOrAncestor.tag;
+    var addendum = getCurrentFiberStackInDev();
+    var warnKey = !!invalidParent + '|' + childTag + '|' + ancestorTag + '|' + addendum;
+
+    if (didWarn$1[warnKey]) {
+      return;
+    }
+
+    didWarn$1[warnKey] = true;
+    var tagDisplayName = childTag;
+    var whitespaceInfo = '';
+
+    if (childTag === '#text') {
+      if (/\S/.test(childText)) {
+        tagDisplayName = 'Text nodes';
+      } else {
+        tagDisplayName = 'Whitespace text nodes';
+        whitespaceInfo = " Make sure you don't have any extra whitespace between tags on " + 'each line of your source code.';
+      }
+    } else {
+      tagDisplayName = '<' + childTag + '>';
+    }
+
+    if (invalidParent) {
+      var info = '';
+
+      if (ancestorTag === 'table' && childTag === 'tr') {
+        info += ' Add a <tbody>, <thead> or <tfoot> to your code to match the DOM tree generated by ' + 'the browser.';
+      }
+
+      error('validateDOMNesting(...): %s cannot appear as a child of <%s>.%s%s', tagDisplayName, ancestorTag, whitespaceInfo, info);
+    } else {
+      error('validateDOMNesting(...): %s cannot appear as a descendant of ' + '<%s>.', tagDisplayName, ancestorTag);
+    }
+  };
+}
+
+var SUPPRESS_HYDRATION_WARNING$1;
+
+{
+  SUPPRESS_HYDRATION_WARNING$1 = 'suppressHydrationWarning';
+}
+
+var SUSPENSE_START_DATA = '$';
+var SUSPENSE_END_DATA = '/$';
+var SUSPENSE_PENDING_START_DATA = '$?';
+var SUSPENSE_FALLBACK_START_DATA = '$!';
+var STYLE$1 = 'style';
+var eventsEnabled = null;
+var selectionInformation = null;
+
+function shouldAutoFocusHostComponent(type, props) {
+  switch (type) {
+    case 'button':
+    case 'input':
+    case 'select':
+    case 'textarea':
+      return !!props.autoFocus;
+  }
+
+  return false;
+}
+function getRootHostContext(rootContainerInstance) {
+  var type;
+  var namespace;
+  var nodeType = rootContainerInstance.nodeType;
+
+  switch (nodeType) {
+    case DOCUMENT_NODE:
+    case DOCUMENT_FRAGMENT_NODE:
+      {
+        type = nodeType === DOCUMENT_NODE ? '#document' : '#fragment';
+        var root = rootContainerInstance.documentElement;
+        namespace = root ? root.namespaceURI : getChildNamespace(null, '');
+        break;
+      }
+
+    default:
+      {
+        var container = nodeType === COMMENT_NODE ? rootContainerInstance.parentNode : rootContainerInstance;
+        var ownNamespace = container.namespaceURI || null;
+        type = container.tagName;
+        namespace = getChildNamespace(ownNamespace, type);
+        break;
+      }
+  }
+
+  {
+    var validatedTag = type.toLowerCase();
+    var ancestorInfo = updatedAncestorInfo(null, validatedTag);
+    return {
+      namespace: namespace,
+      ancestorInfo: ancestorInfo
+    };
+  }
+}
+function getChildHostContext(parentHostContext, type, rootContainerInstance) {
+  {
+    var parentHostContextDev = parentHostContext;
+    var namespace = getChildNamespace(parentHostContextDev.namespace, type);
+    var ancestorInfo = updatedAncestorInfo(parentHostContextDev.ancestorInfo, type);
+    return {
+      namespace: namespace,
+      ancestorInfo: ancestorInfo
+    };
+  }
+}
+function getPublicInstance(instance) {
+  return instance;
+}
+function prepareForCommit(containerInfo) {
+  eventsEnabled = isEnabled();
+  selectionInformation = getSelectionInformation();
+  setEnabled(false);
+}
+function resetAfterCommit(containerInfo) {
+  restoreSelection(selectionInformation);
+  setEnabled(eventsEnabled);
+  eventsEnabled = null;
+
+  selectionInformation = null;
+}
+function createInstance(type, props, rootContainerInstance, hostContext, internalInstanceHandle) {
+  var parentNamespace;
+
+  {
+    // TODO: take namespace into account when validating.
+    var hostContextDev = hostContext;
+    validateDOMNesting(type, null, hostContextDev.ancestorInfo);
+
+    if (typeof props.children === 'string' || typeof props.children === 'number') {
+      var string = '' + props.children;
+      var ownAncestorInfo = updatedAncestorInfo(hostContextDev.ancestorInfo, type);
+      validateDOMNesting(null, string, ownAncestorInfo);
+    }
+
+    parentNamespace = hostContextDev.namespace;
+  }
+
+  var domElement = createElement(type, props, rootContainerInstance, parentNamespace);
+  precacheFiberNode(internalInstanceHandle, domElement);
+  updateFiberProps(domElement, props);
+  return domElement;
+}
+function appendInitialChild(parentInstance, child) {
+  parentInstance.appendChild(child);
+}
+function finalizeInitialChildren(domElement, type, props, rootContainerInstance, hostContext) {
+  setInitialProperties(domElement, type, props, rootContainerInstance);
+  return shouldAutoFocusHostComponent(type, props);
+}
+function prepareUpdate(domElement, type, oldProps, newProps, rootContainerInstance, hostContext) {
+  {
+    var hostContextDev = hostContext;
+
+    if (typeof newProps.children !== typeof oldProps.children && (typeof newProps.children === 'string' || typeof newProps.children === 'number')) {
+      var string = '' + newProps.children;
+      var ownAncestorInfo = updatedAncestorInfo(hostContextDev.ancestorInfo, type);
+      validateDOMNesting(null, string, ownAncestorInfo);
+    }
+  }
+
+  return diffProperties(domElement, type, oldProps, newProps, rootContainerInstance);
+}
+function shouldSetTextContent(type, props) {
+  return type === 'textarea' || type === 'option' || type === 'noscript' || typeof props.children === 'string' || typeof props.children === 'number' || typeof props.dangerouslySetInnerHTML === 'object' && props.dangerouslySetInnerHTML !== null && props.dangerouslySetInnerHTML.__html != null;
+}
+function shouldDeprioritizeSubtree(type, props) {
+  return !!props.hidden;
+}
+function createTextInstance(text, rootContainerInstance, hostContext, internalInstanceHandle) {
+  {
+    var hostContextDev = hostContext;
+    validateDOMNesting(null, text, hostContextDev.ancestorInfo);
+  }
+
+  var textNode = createTextNode(text, rootContainerInstance);
+  precacheFiberNode(internalInstanceHandle, textNode);
+  return textNode;
+}
+// if a component just imports ReactDOM (e.g. for findDOMNode).
+// Some environments might not have setTimeout or clearTimeout.
+
+var scheduleTimeout = typeof setTimeout === 'function' ? setTimeout : undefined;
+var cancelTimeout = typeof clearTimeout === 'function' ? clearTimeout : undefined;
+var noTimeout = -1; // -------------------
+function commitMount(domElement, type, newProps, internalInstanceHandle) {
+  // Despite the naming that might imply otherwise, this method only
+  // fires if there is an `Update` effect scheduled during mounting.
+  // This happens if `finalizeInitialChildren` returns `true` (which it
+  // does to implement the `autoFocus` attribute on the client). But
+  // there are also other cases when this might happen (such as patching
+  // up text content during hydration mismatch). So we'll check this again.
+  if (shouldAutoFocusHostComponent(type, newProps)) {
+    domElement.focus();
+  }
+}
+function commitUpdate(domElement, updatePayload, type, oldProps, newProps, internalInstanceHandle) {
+  // Update the props handle so that we know which props are the ones with
+  // with current event handlers.
+  updateFiberProps(domElement, newProps); // Apply the diff to the DOM node.
+
+  updateProperties(domElement, updatePayload, type, oldProps, newProps);
+}
+function resetTextContent(domElement) {
+  setTextContent(domElement, '');
+}
+function commitTextUpdate(textInstance, oldText, newText) {
+  textInstance.nodeValue = newText;
+}
+function appendChild(parentInstance, child) {
+  parentInstance.appendChild(child);
+}
+function appendChildToContainer(container, child) {
+  var parentNode;
+
+  if (container.nodeType === COMMENT_NODE) {
+    parentNode = container.parentNode;
+    parentNode.insertBefore(child, container);
+  } else {
+    parentNode = container;
+    parentNode.appendChild(child);
+  } // This container might be used for a portal.
+  // If something inside a portal is clicked, that click should bubble
+  // through the React tree. However, on Mobile Safari the click would
+  // never bubble through the *DOM* tree unless an ancestor with onclick
+  // event exists. So we wouldn't see it and dispatch it.
+  // This is why we ensure that non React root containers have inline onclick
+  // defined.
+  // https://github.com/facebook/react/issues/11918
+
+
+  var reactRootContainer = container._reactRootContainer;
+
+  if ((reactRootContainer === null || reactRootContainer === undefined) && parentNode.onclick === null) {
+    // TODO: This cast may not be sound for SVG, MathML or custom elements.
+    trapClickOnNonInteractiveElement(parentNode);
+  }
+}
+function insertBefore(parentInstance, child, beforeChild) {
+  parentInstance.insertBefore(child, beforeChild);
+}
+function insertInContainerBefore(container, child, beforeChild) {
+  if (container.nodeType === COMMENT_NODE) {
+    container.parentNode.insertBefore(child, beforeChild);
+  } else {
+    container.insertBefore(child, beforeChild);
+  }
+}
+function removeChild(parentInstance, child) {
+  parentInstance.removeChild(child);
+}
+function removeChildFromContainer(container, child) {
+  if (container.nodeType === COMMENT_NODE) {
+    container.parentNode.removeChild(child);
+  } else {
+    container.removeChild(child);
+  }
+}
+
+function hideInstance(instance) {
+  // pass host context to this method?
+
+
+  instance = instance;
+  var style = instance.style;
+
+  if (typeof style.setProperty === 'function') {
+    style.setProperty('display', 'none', 'important');
+  } else {
+    style.display = 'none';
+  }
+}
+function hideTextInstance(textInstance) {
+  textInstance.nodeValue = '';
+}
+function unhideInstance(instance, props) {
+  instance = instance;
+  var styleProp = props[STYLE$1];
+  var display = styleProp !== undefined && styleProp !== null && styleProp.hasOwnProperty('display') ? styleProp.display : null;
+  instance.style.display = dangerousStyleValue('display', display);
+}
+function unhideTextInstance(textInstance, text) {
+  textInstance.nodeValue = text;
+} // -------------------
+function canHydrateInstance(instance, type, props) {
+  if (instance.nodeType !== ELEMENT_NODE || type.toLowerCase() !== instance.nodeName.toLowerCase()) {
+    return null;
+  } // This has now been refined to an element node.
+
+
+  return instance;
+}
+function canHydrateTextInstance(instance, text) {
+  if (text === '' || instance.nodeType !== TEXT_NODE) {
+    // Empty strings are not parsed by HTML so there won't be a correct match here.
+    return null;
+  } // This has now been refined to a text node.
+
+
+  return instance;
+}
+function isSuspenseInstancePending(instance) {
+  return instance.data === SUSPENSE_PENDING_START_DATA;
+}
+function isSuspenseInstanceFallback(instance) {
+  return instance.data === SUSPENSE_FALLBACK_START_DATA;
+}
+
+function getNextHydratable(node) {
+  // Skip non-hydratable nodes.
+  for (; node != null; node = node.nextSibling) {
+    var nodeType = node.nodeType;
+
+    if (nodeType === ELEMENT_NODE || nodeType === TEXT_NODE) {
+      break;
+    }
+  }
+
+  return node;
+}
+
+function getNextHydratableSibling(instance) {
+  return getNextHydratable(instance.nextSibling);
+}
+function getFirstHydratableChild(parentInstance) {
+  return getNextHydratable(parentInstance.firstChild);
+}
+function hydrateInstance(instance, type, props, rootContainerInstance, hostContext, internalInstanceHandle) {
+  precacheFiberNode(internalInstanceHandle, instance); // TODO: Possibly defer this until the commit phase where all the events
+  // get attached.
+
+  updateFiberProps(instance, props);
+  var parentNamespace;
+
+  {
+    var hostContextDev = hostContext;
+    parentNamespace = hostContextDev.namespace;
+  }
+
+  return diffHydratedProperties(instance, type, props, parentNamespace, rootContainerInstance);
+}
+function hydrateTextInstance(textInstance, text, internalInstanceHandle) {
+  precacheFiberNode(internalInstanceHandle, textInstance);
+  return diffHydratedText(textInstance, text);
+}
+function getNextHydratableInstanceAfterSuspenseInstance(suspenseInstance) {
+  var node = suspenseInstance.nextSibling; // Skip past all nodes within this suspense boundary.
+  // There might be nested nodes so we need to keep track of how
+  // deep we are and only break out when we're back on top.
+
+  var depth = 0;
+
+  while (node) {
+    if (node.nodeType === COMMENT_NODE) {
+      var data = node.data;
+
+      if (data === SUSPENSE_END_DATA) {
+        if (depth === 0) {
+          return getNextHydratableSibling(node);
+        } else {
+          depth--;
+        }
+      } else if (data === SUSPENSE_START_DATA || data === SUSPENSE_FALLBACK_START_DATA || data === SUSPENSE_PENDING_START_DATA) {
+        depth++;
+      }
+    }
+
+    node = node.nextSibling;
+  } // TODO: Warn, we didn't find the end comment boundary.
+
+
+  return null;
+} // Returns the SuspenseInstance if this node is a direct child of a
+// SuspenseInstance. I.e. if its previous sibling is a Comment with
+// SUSPENSE_x_START_DATA. Otherwise, null.
+
+function getParentSuspenseInstance(targetInstance) {
+  var node = targetInstance.previousSibling; // Skip past all nodes within this suspense boundary.
+  // There might be nested nodes so we need to keep track of how
+  // deep we are and only break out when we're back on top.
+
+  var depth = 0;
+
+  while (node) {
+    if (node.nodeType === COMMENT_NODE) {
+      var data = node.data;
+
+      if (data === SUSPENSE_START_DATA || data === SUSPENSE_FALLBACK_START_DATA || data === SUSPENSE_PENDING_START_DATA) {
+        if (depth === 0) {
+          return node;
+        } else {
+          depth--;
+        }
+      } else if (data === SUSPENSE_END_DATA) {
+        depth++;
+      }
+    }
+
+    node = node.previousSibling;
+  }
+
+  return null;
+}
+function commitHydratedContainer(container) {
+  // Retry if any event replaying was blocked on this.
+  retryIfBlockedOn(container);
+}
+function commitHydratedSuspenseInstance(suspenseInstance) {
+  // Retry if any event replaying was blocked on this.
+  retryIfBlockedOn(suspenseInstance);
+}
+function didNotMatchHydratedContainerTextInstance(parentContainer, textInstance, text) {
+  {
+    warnForUnmatchedText(textInstance, text);
+  }
+}
+function didNotMatchHydratedTextInstance(parentType, parentProps, parentInstance, textInstance, text) {
+  if ( parentProps[SUPPRESS_HYDRATION_WARNING$1] !== true) {
+    warnForUnmatchedText(textInstance, text);
+  }
+}
+function didNotHydrateContainerInstance(parentContainer, instance) {
+  {
+    if (instance.nodeType === ELEMENT_NODE) {
+      warnForDeletedHydratableElement(parentContainer, instance);
+    } else if (instance.nodeType === COMMENT_NODE) ; else {
+      warnForDeletedHydratableText(parentContainer, instance);
+    }
+  }
+}
+function didNotHydrateInstance(parentType, parentProps, parentInstance, instance) {
+  if ( parentProps[SUPPRESS_HYDRATION_WARNING$1] !== true) {
+    if (instance.nodeType === ELEMENT_NODE) {
+      warnForDeletedHydratableElement(parentInstance, instance);
+    } else if (instance.nodeType === COMMENT_NODE) ; else {
+      warnForDeletedHydratableText(parentInstance, instance);
+    }
+  }
+}
+function didNotFindHydratableContainerInstance(parentContainer, type, props) {
+  {
+    warnForInsertedHydratedElement(parentContainer, type);
+  }
+}
+function didNotFindHydratableContainerTextInstance(parentContainer, text) {
+  {
+    warnForInsertedHydratedText(parentContainer, text);
+  }
+}
+function didNotFindHydratableInstance(parentType, parentProps, parentInstance, type, props) {
+  if ( parentProps[SUPPRESS_HYDRATION_WARNING$1] !== true) {
+    warnForInsertedHydratedElement(parentInstance, type);
+  }
+}
+function didNotFindHydratableTextInstance(parentType, parentProps, parentInstance, text) {
+  if ( parentProps[SUPPRESS_HYDRATION_WARNING$1] !== true) {
+    warnForInsertedHydratedText(parentInstance, text);
+  }
+}
+function didNotFindHydratableSuspenseInstance(parentType, parentProps, parentInstance) {
+  if ( parentProps[SUPPRESS_HYDRATION_WARNING$1] !== true) ;
+}
+
+var randomKey = Math.random().toString(36).slice(2);
+var internalInstanceKey = '__reactInternalInstance$' + randomKey;
+var internalEventHandlersKey = '__reactEventHandlers$' + randomKey;
+var internalContainerInstanceKey = '__reactContainere$' + randomKey;
+function precacheFiberNode(hostInst, node) {
+  node[internalInstanceKey] = hostInst;
+}
+function markContainerAsRoot(hostRoot, node) {
+  node[internalContainerInstanceKey] = hostRoot;
+}
+function unmarkContainerAsRoot(node) {
+  node[internalContainerInstanceKey] = null;
+}
+function isContainerMarkedAsRoot(node) {
+  return !!node[internalContainerInstanceKey];
+} // Given a DOM node, return the closest HostComponent or HostText fiber ancestor.
+// If the target node is part of a hydrated or not yet rendered subtree, then
+// this may also return a SuspenseComponent or HostRoot to indicate that.
+// Conceptually the HostRoot fiber is a child of the Container node. So if you
+// pass the Container node as the targetNode, you will not actually get the
+// HostRoot back. To get to the HostRoot, you need to pass a child of it.
+// The same thing applies to Suspense boundaries.
+
+function getClosestInstanceFromNode(targetNode) {
+  var targetInst = targetNode[internalInstanceKey];
+
+  if (targetInst) {
+    // Don't return HostRoot or SuspenseComponent here.
+    return targetInst;
+  } // If the direct event target isn't a React owned DOM node, we need to look
+  // to see if one of its parents is a React owned DOM node.
+
+
+  var parentNode = targetNode.parentNode;
+
+  while (parentNode) {
+    // We'll check if this is a container root that could include
+    // React nodes in the future. We need to check this first because
+    // if we're a child of a dehydrated container, we need to first
+    // find that inner container before moving on to finding the parent
+    // instance. Note that we don't check this field on  the targetNode
+    // itself because the fibers are conceptually between the container
+    // node and the first child. It isn't surrounding the container node.
+    // If it's not a container, we check if it's an instance.
+    targetInst = parentNode[internalContainerInstanceKey] || parentNode[internalInstanceKey];
+
+    if (targetInst) {
+      // Since this wasn't the direct target of the event, we might have
+      // stepped past dehydrated DOM nodes to get here. However they could
+      // also have been non-React nodes. We need to answer which one.
+      // If we the instance doesn't have any children, then there can't be
+      // a nested suspense boundary within it. So we can use this as a fast
+      // bailout. Most of the time, when people add non-React children to
+      // the tree, it is using a ref to a child-less DOM node.
+      // Normally we'd only need to check one of the fibers because if it
+      // has ever gone from having children to deleting them or vice versa
+      // it would have deleted the dehydrated boundary nested inside already.
+      // However, since the HostRoot starts out with an alternate it might
+      // have one on the alternate so we need to check in case this was a
+      // root.
+      var alternate = targetInst.alternate;
+
+      if (targetInst.child !== null || alternate !== null && alternate.child !== null) {
+        // Next we need to figure out if the node that skipped past is
+        // nested within a dehydrated boundary and if so, which one.
+        var suspenseInstance = getParentSuspenseInstance(targetNode);
+
+        while (suspenseInstance !== null) {
+          // We found a suspense instance. That means that we haven't
+          // hydrated it yet. Even though we leave the comments in the
+          // DOM after hydrating, and there are boundaries in the DOM
+          // that could already be hydrated, we wouldn't have found them
+          // through this pass since if the target is hydrated it would
+          // have had an internalInstanceKey on it.
+          // Let's get the fiber associated with the SuspenseComponent
+          // as the deepest instance.
+          var targetSuspenseInst = suspenseInstance[internalInstanceKey];
+
+          if (targetSuspenseInst) {
+            return targetSuspenseInst;
+          } // If we don't find a Fiber on the comment, it might be because
+          // we haven't gotten to hydrate it yet. There might still be a
+          // parent boundary that hasn't above this one so we need to find
+          // the outer most that is known.
+
+
+          suspenseInstance = getParentSuspenseInstance(suspenseInstance); // If we don't find one, then that should mean that the parent
+          // host component also hasn't hydrated yet. We can return it
+          // below since it will bail out on the isMounted check later.
+        }
+      }
+
+      return targetInst;
+    }
+
+    targetNode = parentNode;
+    parentNode = targetNode.parentNode;
+  }
+
+  return null;
+}
+/**
+ * Given a DOM node, return the ReactDOMComponent or ReactDOMTextComponent
+ * instance, or null if the node was not rendered by this React.
+ */
+
+function getInstanceFromNode$1(node) {
+  var inst = node[internalInstanceKey] || node[internalContainerInstanceKey];
+
+  if (inst) {
+    if (inst.tag === HostComponent || inst.tag === HostText || inst.tag === SuspenseComponent || inst.tag === HostRoot) {
+      return inst;
+    } else {
+      return null;
+    }
+  }
+
+  return null;
+}
+/**
+ * Given a ReactDOMComponent or ReactDOMTextComponent, return the corresponding
+ * DOM node.
+ */
+
+function getNodeFromInstance$1(inst) {
+  if (inst.tag === HostComponent || inst.tag === HostText) {
+    // In Fiber this, is just the state node right now. We assume it will be
+    // a host component or host text.
+    return inst.stateNode;
+  } // Without this first invariant, passing a non-DOM-component triggers the next
+  // invariant for a missing parent, which is super confusing.
+
+
+  {
+    {
+      throw Error( "getNodeFromInstance: Invalid argument." );
+    }
+  }
+}
+function getFiberCurrentPropsFromNode$1(node) {
+  return node[internalEventHandlersKey] || null;
+}
+function updateFiberProps(node, props) {
+  node[internalEventHandlersKey] = props;
+}
+
+function getParent(inst) {
+  do {
+    inst = inst.return; // TODO: If this is a HostRoot we might want to bail out.
+    // That is depending on if we want nested subtrees (layers) to bubble
+    // events to their parent. We could also go through parentNode on the
+    // host node but that wouldn't work for React Native and doesn't let us
+    // do the portal feature.
+  } while (inst && inst.tag !== HostComponent);
+
+  if (inst) {
+    return inst;
+  }
+
+  return null;
+}
+/**
+ * Return the lowest common ancestor of A and B, or null if they are in
+ * different trees.
+ */
+
+
+function getLowestCommonAncestor(instA, instB) {
+  var depthA = 0;
+
+  for (var tempA = instA; tempA; tempA = getParent(tempA)) {
+    depthA++;
+  }
+
+  var depthB = 0;
+
+  for (var tempB = instB; tempB; tempB = getParent(tempB)) {
+    depthB++;
+  } // If A is deeper, crawl up.
+
+
+  while (depthA - depthB > 0) {
+    instA = getParent(instA);
+    depthA--;
+  } // If B is deeper, crawl up.
+
+
+  while (depthB - depthA > 0) {
+    instB = getParent(instB);
+    depthB--;
+  } // Walk in lockstep until we find a match.
+
+
+  var depth = depthA;
+
+  while (depth--) {
+    if (instA === instB || instA === instB.alternate) {
+      return instA;
+    }
+
+    instA = getParent(instA);
+    instB = getParent(instB);
+  }
+
+  return null;
+}
+/**
+ * Simulates the traversal of a two-phase, capture/bubble event dispatch.
+ */
+
+function traverseTwoPhase(inst, fn, arg) {
+  var path = [];
+
+  while (inst) {
+    path.push(inst);
+    inst = getParent(inst);
+  }
+
+  var i;
+
+  for (i = path.length; i-- > 0;) {
+    fn(path[i], 'captured', arg);
+  }
+
+  for (i = 0; i < path.length; i++) {
+    fn(path[i], 'bubbled', arg);
+  }
+}
+/**
+ * Traverses the ID hierarchy and invokes the supplied `cb` on any IDs that
+ * should would receive a `mouseEnter` or `mouseLeave` event.
+ *
+ * Does not invoke the callback on the nearest common ancestor because nothing
+ * "entered" or "left" that element.
+ */
+
+function traverseEnterLeave(from, to, fn, argFrom, argTo) {
+  var common = from && to ? getLowestCommonAncestor(from, to) : null;
+  var pathFrom = [];
+
+  while (true) {
+    if (!from) {
+      break;
+    }
+
+    if (from === common) {
+      break;
+    }
+
+    var alternate = from.alternate;
+
+    if (alternate !== null && alternate === common) {
+      break;
+    }
+
+    pathFrom.push(from);
+    from = getParent(from);
+  }
+
+  var pathTo = [];
+
+  while (true) {
+    if (!to) {
+      break;
+    }
+
+    if (to === common) {
+      break;
+    }
+
+    var _alternate = to.alternate;
+
+    if (_alternate !== null && _alternate === common) {
+      break;
+    }
+
+    pathTo.push(to);
+    to = getParent(to);
+  }
+
+  for (var i = 0; i < pathFrom.length; i++) {
+    fn(pathFrom[i], 'bubbled', argFrom);
+  }
+
+  for (var _i = pathTo.length; _i-- > 0;) {
+    fn(pathTo[_i], 'captured', argTo);
+  }
+}
+
+function isInteractive(tag) {
+  return tag === 'button' || tag === 'input' || tag === 'select' || tag === 'textarea';
+}
+
+function shouldPreventMouseEvent(name, type, props) {
+  switch (name) {
+    case 'onClick':
+    case 'onClickCapture':
+    case 'onDoubleClick':
+    case 'onDoubleClickCapture':
+    case 'onMouseDown':
+    case 'onMouseDownCapture':
+    case 'onMouseMove':
+    case 'onMouseMoveCapture':
+    case 'onMouseUp':
+    case 'onMouseUpCapture':
+    case 'onMouseEnter':
+      return !!(props.disabled && isInteractive(type));
+
+    default:
+      return false;
+  }
+}
+/**
+ * @param {object} inst The instance, which is the source of events.
+ * @param {string} registrationName Name of listener (e.g. `onClick`).
+ * @return {?function} The stored callback.
+ */
+
+
+function getListener(inst, registrationName) {
+  var listener; // TODO: shouldPreventMouseEvent is DOM-specific and definitely should not
+  // live here; needs to be moved to a better place soon
+
+  var stateNode = inst.stateNode;
+
+  if (!stateNode) {
+    // Work in progress (ex: onload events in incremental mode).
+    return null;
+  }
+
+  var props = getFiberCurrentPropsFromNode(stateNode);
+
+  if (!props) {
+    // Work in progress.
+    return null;
+  }
+
+  listener = props[registrationName];
+
+  if (shouldPreventMouseEvent(registrationName, inst.type, props)) {
+    return null;
+  }
+
+  if (!(!listener || typeof listener === 'function')) {
+    {
+      throw Error( "Expected `" + registrationName + "` listener to be a function, instead got a value of `" + typeof listener + "` type." );
+    }
+  }
+
+  return listener;
+}
+
+/**
+ * Some event types have a notion of different registration names for different
+ * "phases" of propagation. This finds listeners by a given phase.
+ */
+function listenerAtPhase(inst, event, propagationPhase) {
+  var registrationName = event.dispatchConfig.phasedRegistrationNames[propagationPhase];
+  return getListener(inst, registrationName);
+}
+/**
+ * A small set of propagation patterns, each of which will accept a small amount
+ * of information, and generate a set of "dispatch ready event objects" - which
+ * are sets of events that have already been annotated with a set of dispatched
+ * listener functions/ids. The API is designed this way to discourage these
+ * propagation strategies from actually executing the dispatches, since we
+ * always want to collect the entire set of dispatches before executing even a
+ * single one.
+ */
+
+/**
+ * Tags a `SyntheticEvent` with dispatched listeners. Creating this function
+ * here, allows us to not have to bind or create functions for each event.
+ * Mutating the event's members allows us to not have to create a wrapping
+ * "dispatch" object that pairs the event with the listener.
+ */
+
+
+function accumulateDirectionalDispatches(inst, phase, event) {
+  {
+    if (!inst) {
+      error('Dispatching inst must not be null');
+    }
+  }
+
+  var listener = listenerAtPhase(inst, event, phase);
+
+  if (listener) {
+    event._dispatchListeners = accumulateInto(event._dispatchListeners, listener);
+    event._dispatchInstances = accumulateInto(event._dispatchInstances, inst);
+  }
+}
+/**
+ * Collect dispatches (must be entirely collected before dispatching - see unit
+ * tests). Lazily allocate the array to conserve memory.  We must loop through
+ * each event and perform the traversal for each one. We cannot perform a
+ * single traversal for the entire collection of events because each event may
+ * have a different target.
+ */
+
+
+function accumulateTwoPhaseDispatchesSingle(event) {
+  if (event && event.dispatchConfig.phasedRegistrationNames) {
+    traverseTwoPhase(event._targetInst, accumulateDirectionalDispatches, event);
+  }
+}
+/**
+ * Accumulates without regard to direction, does not look for phased
+ * registration names. Same as `accumulateDirectDispatchesSingle` but without
+ * requiring that the `dispatchMarker` be the same as the dispatched ID.
+ */
+
+
+function accumulateDispatches(inst, ignoredDirection, event) {
+  if (inst && event && event.dispatchConfig.registrationName) {
+    var registrationName = event.dispatchConfig.registrationName;
+    var listener = getListener(inst, registrationName);
+
+    if (listener) {
+      event._dispatchListeners = accumulateInto(event._dispatchListeners, listener);
+      event._dispatchInstances = accumulateInto(event._dispatchInstances, inst);
+    }
+  }
+}
+/**
+ * Accumulates dispatches on an `SyntheticEvent`, but only for the
+ * `dispatchMarker`.
+ * @param {SyntheticEvent} event
+ */
+
+
+function accumulateDirectDispatchesSingle(event) {
+  if (event && event.dispatchConfig.registrationName) {
+    accumulateDispatches(event._targetInst, null, event);
+  }
+}
+
+function accumulateTwoPhaseDispatches(events) {
+  forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle);
+}
+function accumulateEnterLeaveDispatches(leave, enter, from, to) {
+  traverseEnterLeave(from, to, accumulateDispatches, leave, enter);
+}
+function accumulateDirectDispatches(events) {
+  forEachAccumulated(events, accumulateDirectDispatchesSingle);
+}
+
+/**
+ * These variables store information about text content of a target node,
+ * allowing comparison of content before and after a given event.
+ *
+ * Identify the node where selection currently begins, then observe
+ * both its text content and its current position in the DOM. Since the
+ * browser may natively replace the target node during composition, we can
+ * use its position to find its replacement.
+ *
+ *
+ */
+var root = null;
+var startText = null;
+var fallbackText = null;
+function initialize(nativeEventTarget) {
+  root = nativeEventTarget;
+  startText = getText();
+  return true;
+}
+function reset() {
+  root = null;
+  startText = null;
+  fallbackText = null;
+}
+function getData() {
+  if (fallbackText) {
+    return fallbackText;
+  }
+
+  var start;
+  var startValue = startText;
+  var startLength = startValue.length;
+  var end;
+  var endValue = getText();
+  var endLength = endValue.length;
+
+  for (start = 0; start < startLength; start++) {
+    if (startValue[start] !== endValue[start]) {
+      break;
+    }
+  }
+
+  var minEnd = startLength - start;
+
+  for (end = 1; end <= minEnd; end++) {
+    if (startValue[startLength - end] !== endValue[endLength - end]) {
+      break;
+    }
+  }
+
+  var sliceTail = end > 1 ? 1 - end : undefined;
+  fallbackText = endValue.slice(start, sliceTail);
+  return fallbackText;
+}
+function getText() {
+  if ('value' in root) {
+    return root.value;
+  }
+
+  return root.textContent;
+}
+
+var EVENT_POOL_SIZE = 10;
+/**
+ * @interface Event
+ * @see http://www.w3.org/TR/DOM-Level-3-Events/
+ */
+
+var EventInterface = {
+  type: null,
+  target: null,
+  // currentTarget is set when dispatching; no use in copying it here
+  currentTarget: function () {
+    return null;
+  },
+  eventPhase: null,
+  bubbles: null,
+  cancelable: null,
+  timeStamp: function (event) {
+    return event.timeStamp || Date.now();
+  },
+  defaultPrevented: null,
+  isTrusted: null
+};
+
+function functionThatReturnsTrue() {
+  return true;
+}
+
+function functionThatReturnsFalse() {
+  return false;
+}
+/**
+ * Synthetic events are dispatched by event plugins, typically in response to a
+ * top-level event delegation handler.
+ *
+ * These systems should generally use pooling to reduce the frequency of garbage
+ * collection. The system should check `isPersistent` to determine whether the
+ * event should be released into the pool after being dispatched. Users that
+ * need a persisted event should invoke `persist`.
+ *
+ * Synthetic events (and subclasses) implement the DOM Level 3 Events API by
+ * normalizing browser quirks. Subclasses do not necessarily have to implement a
+ * DOM interface; custom application-specific events can also subclass this.
+ *
+ * @param {object} dispatchConfig Configuration used to dispatch this event.
+ * @param {*} targetInst Marker identifying the event target.
+ * @param {object} nativeEvent Native browser event.
+ * @param {DOMEventTarget} nativeEventTarget Target node.
+ */
+
+
+function SyntheticEvent(dispatchConfig, targetInst, nativeEvent, nativeEventTarget) {
+  {
+    // these have a getter/setter for warnings
+    delete this.nativeEvent;
+    delete this.preventDefault;
+    delete this.stopPropagation;
+    delete this.isDefaultPrevented;
+    delete this.isPropagationStopped;
+  }
+
+  this.dispatchConfig = dispatchConfig;
+  this._targetInst = targetInst;
+  this.nativeEvent = nativeEvent;
+  var Interface = this.constructor.Interface;
+
+  for (var propName in Interface) {
+    if (!Interface.hasOwnProperty(propName)) {
+      continue;
+    }
+
+    {
+      delete this[propName]; // this has a getter/setter for warnings
+    }
+
+    var normalize = Interface[propName];
+
+    if (normalize) {
+      this[propName] = normalize(nativeEvent);
+    } else {
+      if (propName === 'target') {
+        this.target = nativeEventTarget;
+      } else {
+        this[propName] = nativeEvent[propName];
+      }
+    }
+  }
+
+  var defaultPrevented = nativeEvent.defaultPrevented != null ? nativeEvent.defaultPrevented : nativeEvent.returnValue === false;
+
+  if (defaultPrevented) {
+    this.isDefaultPrevented = functionThatReturnsTrue;
+  } else {
+    this.isDefaultPrevented = functionThatReturnsFalse;
+  }
+
+  this.isPropagationStopped = functionThatReturnsFalse;
+  return this;
+}
+
+_assign(SyntheticEvent.prototype, {
+  preventDefault: function () {
+    this.defaultPrevented = true;
+    var event = this.nativeEvent;
+
+    if (!event) {
+      return;
+    }
+
+    if (event.preventDefault) {
+      event.preventDefault();
+    } else if (typeof event.returnValue !== 'unknown') {
+      event.returnValue = false;
+    }
+
+    this.isDefaultPrevented = functionThatReturnsTrue;
+  },
+  stopPropagation: function () {
+    var event = this.nativeEvent;
+
+    if (!event) {
+      return;
+    }
+
+    if (event.stopPropagation) {
+      event.stopPropagation();
+    } else if (typeof event.cancelBubble !== 'unknown') {
+      // The ChangeEventPlugin registers a "propertychange" event for
+      // IE. This event does not support bubbling or cancelling, and
+      // any references to cancelBubble throw "Member not found".  A
+      // typeof check of "unknown" circumvents this issue (and is also
+      // IE specific).
+      event.cancelBubble = true;
+    }
+
+    this.isPropagationStopped = functionThatReturnsTrue;
+  },
+
+  /**
+   * We release all dispatched `SyntheticEvent`s after each event loop, adding
+   * them back into the pool. This allows a way to hold onto a reference that
+   * won't be added back into the pool.
+   */
+  persist: function () {
+    this.isPersistent = functionThatReturnsTrue;
+  },
+
+  /**
+   * Checks if this event should be released back into the pool.
+   *
+   * @return {boolean} True if this should not be released, false otherwise.
+   */
+  isPersistent: functionThatReturnsFalse,
+
+  /**
+   * `PooledClass` looks for `destructor` on each instance it releases.
+   */
+  destructor: function () {
+    var Interface = this.constructor.Interface;
+
+    for (var propName in Interface) {
+      {
+        Object.defineProperty(this, propName, getPooledWarningPropertyDefinition(propName, Interface[propName]));
+      }
+    }
+
+    this.dispatchConfig = null;
+    this._targetInst = null;
+    this.nativeEvent = null;
+    this.isDefaultPrevented = functionThatReturnsFalse;
+    this.isPropagationStopped = functionThatReturnsFalse;
+    this._dispatchListeners = null;
+    this._dispatchInstances = null;
+
+    {
+      Object.defineProperty(this, 'nativeEvent', getPooledWarningPropertyDefinition('nativeEvent', null));
+      Object.defineProperty(this, 'isDefaultPrevented', getPooledWarningPropertyDefinition('isDefaultPrevented', functionThatReturnsFalse));
+      Object.defineProperty(this, 'isPropagationStopped', getPooledWarningPropertyDefinition('isPropagationStopped', functionThatReturnsFalse));
+      Object.defineProperty(this, 'preventDefault', getPooledWarningPropertyDefinition('preventDefault', function () {}));
+      Object.defineProperty(this, 'stopPropagation', getPooledWarningPropertyDefinition('stopPropagation', function () {}));
+    }
+  }
+});
+
+SyntheticEvent.Interface = EventInterface;
+/**
+ * Helper to reduce boilerplate when creating subclasses.
+ */
+
+SyntheticEvent.extend = function (Interface) {
+  var Super = this;
+
+  var E = function () {};
+
+  E.prototype = Super.prototype;
+  var prototype = new E();
+
+  function Class() {
+    return Super.apply(this, arguments);
+  }
+
+  _assign(prototype, Class.prototype);
+
+  Class.prototype = prototype;
+  Class.prototype.constructor = Class;
+  Class.Interface = _assign({}, Super.Interface, Interface);
+  Class.extend = Super.extend;
+  addEventPoolingTo(Class);
+  return Class;
+};
+
+addEventPoolingTo(SyntheticEvent);
+/**
+ * Helper to nullify syntheticEvent instance properties when destructing
+ *
+ * @param {String} propName
+ * @param {?object} getVal
+ * @return {object} defineProperty object
+ */
+
+function getPooledWarningPropertyDefinition(propName, getVal) {
+  var isFunction = typeof getVal === 'function';
+  return {
+    configurable: true,
+    set: set,
+    get: get
+  };
+
+  function set(val) {
+    var action = isFunction ? 'setting the method' : 'setting the property';
+    warn(action, 'This is effectively a no-op');
+    return val;
+  }
+
+  function get() {
+    var action = isFunction ? 'accessing the method' : 'accessing the property';
+    var result = isFunction ? 'This is a no-op function' : 'This is set to null';
+    warn(action, result);
+    return getVal;
+  }
+
+  function warn(action, result) {
+    {
+      error("This synthetic event is reused for performance reasons. If you're seeing this, " + "you're %s `%s` on a released/nullified synthetic event. %s. " + 'If you must keep the original synthetic event around, use event.persist(). ' + 'See https://fb.me/react-event-pooling for more information.', action, propName, result);
+    }
+  }
+}
+
+function getPooledEvent(dispatchConfig, targetInst, nativeEvent, nativeInst) {
+  var EventConstructor = this;
+
+  if (EventConstructor.eventPool.length) {
+    var instance = EventConstructor.eventPool.pop();
+    EventConstructor.call(instance, dispatchConfig, targetInst, nativeEvent, nativeInst);
+    return instance;
+  }
+
+  return new EventConstructor(dispatchConfig, targetInst, nativeEvent, nativeInst);
+}
+
+function releasePooledEvent(event) {
+  var EventConstructor = this;
+
+  if (!(event instanceof EventConstructor)) {
+    {
+      throw Error( "Trying to release an event instance into a pool of a different type." );
+    }
+  }
+
+  event.destructor();
+
+  if (EventConstructor.eventPool.length < EVENT_POOL_SIZE) {
+    EventConstructor.eventPool.push(event);
+  }
+}
+
+function addEventPoolingTo(EventConstructor) {
+  EventConstructor.eventPool = [];
+  EventConstructor.getPooled = getPooledEvent;
+  EventConstructor.release = releasePooledEvent;
+}
+
+/**
+ * @interface Event
+ * @see http://www.w3.org/TR/DOM-Level-3-Events/#events-compositionevents
+ */
+
+var SyntheticCompositionEvent = SyntheticEvent.extend({
+  data: null
+});
+
+/**
+ * @interface Event
+ * @see http://www.w3.org/TR/2013/WD-DOM-Level-3-Events-20131105
+ *      /#events-inputevents
+ */
+
+var SyntheticInputEvent = SyntheticEvent.extend({
+  data: null
+});
+
+var END_KEYCODES = [9, 13, 27, 32]; // Tab, Return, Esc, Space
+
+var START_KEYCODE = 229;
+var canUseCompositionEvent = canUseDOM && 'CompositionEvent' in window;
+var documentMode = null;
+
+if (canUseDOM && 'documentMode' in document) {
+  documentMode = document.documentMode;
+} // Webkit offers a very useful `textInput` event that can be used to
+// directly represent `beforeInput`. The IE `textinput` event is not as
+// useful, so we don't use it.
+
+
+var canUseTextInputEvent = canUseDOM && 'TextEvent' in window && !documentMode; // In IE9+, we have access to composition events, but the data supplied
+// by the native compositionend event may be incorrect. Japanese ideographic
+// spaces, for instance (\u3000) are not recorded correctly.
+
+var useFallbackCompositionData = canUseDOM && (!canUseCompositionEvent || documentMode && documentMode > 8 && documentMode <= 11);
+var SPACEBAR_CODE = 32;
+var SPACEBAR_CHAR = String.fromCharCode(SPACEBAR_CODE); // Events and their corresponding property names.
+
+var eventTypes = {
+  beforeInput: {
+    phasedRegistrationNames: {
+      bubbled: 'onBeforeInput',
+      captured: 'onBeforeInputCapture'
+    },
+    dependencies: [TOP_COMPOSITION_END, TOP_KEY_PRESS, TOP_TEXT_INPUT, TOP_PASTE]
+  },
+  compositionEnd: {
+    phasedRegistrationNames: {
+      bubbled: 'onCompositionEnd',
+      captured: 'onCompositionEndCapture'
+    },
+    dependencies: [TOP_BLUR, TOP_COMPOSITION_END, TOP_KEY_DOWN, TOP_KEY_PRESS, TOP_KEY_UP, TOP_MOUSE_DOWN]
+  },
+  compositionStart: {
+    phasedRegistrationNames: {
+      bubbled: 'onCompositionStart',
+      captured: 'onCompositionStartCapture'
+    },
+    dependencies: [TOP_BLUR, TOP_COMPOSITION_START, TOP_KEY_DOWN, TOP_KEY_PRESS, TOP_KEY_UP, TOP_MOUSE_DOWN]
+  },
+  compositionUpdate: {
+    phasedRegistrationNames: {
+      bubbled: 'onCompositionUpdate',
+      captured: 'onCompositionUpdateCapture'
+    },
+    dependencies: [TOP_BLUR, TOP_COMPOSITION_UPDATE, TOP_KEY_DOWN, TOP_KEY_PRESS, TOP_KEY_UP, TOP_MOUSE_DOWN]
+  }
+}; // Track whether we've ever handled a keypress on the space key.
+
+var hasSpaceKeypress = false;
+/**
+ * Return whether a native keypress event is assumed to be a command.
+ * This is required because Firefox fires `keypress` events for key commands
+ * (cut, copy, select-all, etc.) even though no character is inserted.
+ */
+
+function isKeypressCommand(nativeEvent) {
+  return (nativeEvent.ctrlKey || nativeEvent.altKey || nativeEvent.metaKey) && // ctrlKey && altKey is equivalent to AltGr, and is not a command.
+  !(nativeEvent.ctrlKey && nativeEvent.altKey);
+}
+/**
+ * Translate native top level events into event types.
+ *
+ * @param {string} topLevelType
+ * @return {object}
+ */
+
+
+function getCompositionEventType(topLevelType) {
+  switch (topLevelType) {
+    case TOP_COMPOSITION_START:
+      return eventTypes.compositionStart;
+
+    case TOP_COMPOSITION_END:
+      return eventTypes.compositionEnd;
+
+    case TOP_COMPOSITION_UPDATE:
+      return eventTypes.compositionUpdate;
+  }
+}
+/**
+ * Does our fallback best-guess model think this event signifies that
+ * composition has begun?
+ *
+ * @param {string} topLevelType
+ * @param {object} nativeEvent
+ * @return {boolean}
+ */
+
+
+function isFallbackCompositionStart(topLevelType, nativeEvent) {
+  return topLevelType === TOP_KEY_DOWN && nativeEvent.keyCode === START_KEYCODE;
+}
+/**
+ * Does our fallback mode think that this event is the end of composition?
+ *
+ * @param {string} topLevelType
+ * @param {object} nativeEvent
+ * @return {boolean}
+ */
+
+
+function isFallbackCompositionEnd(topLevelType, nativeEvent) {
+  switch (topLevelType) {
+    case TOP_KEY_UP:
+      // Command keys insert or clear IME input.
+      return END_KEYCODES.indexOf(nativeEvent.keyCode) !== -1;
+
+    case TOP_KEY_DOWN:
+      // Expect IME keyCode on each keydown. If we get any other
+      // code we must have exited earlier.
+      return nativeEvent.keyCode !== START_KEYCODE;
+
+    case TOP_KEY_PRESS:
+    case TOP_MOUSE_DOWN:
+    case TOP_BLUR:
+      // Events are not possible without cancelling IME.
+      return true;
+
+    default:
+      return false;
+  }
+}
+/**
+ * Google Input Tools provides composition data via a CustomEvent,
+ * with the `data` property populated in the `detail` object. If this
+ * is available on the event object, use it. If not, this is a plain
+ * composition event and we have nothing special to extract.
+ *
+ * @param {object} nativeEvent
+ * @return {?string}
+ */
+
+
+function getDataFromCustomEvent(nativeEvent) {
+  var detail = nativeEvent.detail;
+
+  if (typeof detail === 'object' && 'data' in detail) {
+    return detail.data;
+  }
+
+  return null;
+}
+/**
+ * Check if a composition event was triggered by Korean IME.
+ * Our fallback mode does not work well with IE's Korean IME,
+ * so just use native composition events when Korean IME is used.
+ * Although CompositionEvent.locale property is deprecated,
+ * it is available in IE, where our fallback mode is enabled.
+ *
+ * @param {object} nativeEvent
+ * @return {boolean}
+ */
+
+
+function isUsingKoreanIME(nativeEvent) {
+  return nativeEvent.locale === 'ko';
+} // Track the current IME composition status, if any.
+
+
+var isComposing = false;
+/**
+ * @return {?object} A SyntheticCompositionEvent.
+ */
+
+function extractCompositionEvent(topLevelType, targetInst, nativeEvent, nativeEventTarget) {
+  var eventType;
+  var fallbackData;
+
+  if (canUseCompositionEvent) {
+    eventType = getCompositionEventType(topLevelType);
+  } else if (!isComposing) {
+    if (isFallbackCompositionStart(topLevelType, nativeEvent)) {
+      eventType = eventTypes.compositionStart;
+    }
+  } else if (isFallbackCompositionEnd(topLevelType, nativeEvent)) {
+    eventType = eventTypes.compositionEnd;
+  }
+
+  if (!eventType) {
+    return null;
+  }
+
+  if (useFallbackCompositionData && !isUsingKoreanIME(nativeEvent)) {
+    // The current composition is stored statically and must not be
+    // overwritten while composition continues.
+    if (!isComposing && eventType === eventTypes.compositionStart) {
+      isComposing = initialize(nativeEventTarget);
+    } else if (eventType === eventTypes.compositionEnd) {
+      if (isComposing) {
+        fallbackData = getData();
+      }
+    }
+  }
+
+  var event = SyntheticCompositionEvent.getPooled(eventType, targetInst, nativeEvent, nativeEventTarget);
+
+  if (fallbackData) {
+    // Inject data generated from fallback path into the synthetic event.
+    // This matches the property of native CompositionEventInterface.
+    event.data = fallbackData;
+  } else {
+    var customData = getDataFromCustomEvent(nativeEvent);
+
+    if (customData !== null) {
+      event.data = customData;
+    }
+  }
+
+  accumulateTwoPhaseDispatches(event);
+  return event;
+}
+/**
+ * @param {TopLevelType} topLevelType Number from `TopLevelType`.
+ * @param {object} nativeEvent Native browser event.
+ * @return {?string} The string corresponding to this `beforeInput` event.
+ */
+
+
+function getNativeBeforeInputChars(topLevelType, nativeEvent) {
+  switch (topLevelType) {
+    case TOP_COMPOSITION_END:
+      return getDataFromCustomEvent(nativeEvent);
+
+    case TOP_KEY_PRESS:
+      /**
+       * If native `textInput` events are available, our goal is to make
+       * use of them. However, there is a special case: the spacebar key.
+       * In Webkit, preventing default on a spacebar `textInput` event
+       * cancels character insertion, but it *also* causes the browser
+       * to fall back to its default spacebar behavior of scrolling the
+       * page.
+       *
+       * Tracking at:
+       * https://code.google.com/p/chromium/issues/detail?id=355103
+       *
+       * To avoid this issue, use the keypress event as if no `textInput`
+       * event is available.
+       */
+      var which = nativeEvent.which;
+
+      if (which !== SPACEBAR_CODE) {
+        return null;
+      }
+
+      hasSpaceKeypress = true;
+      return SPACEBAR_CHAR;
+
+    case TOP_TEXT_INPUT:
+      // Record the characters to be added to the DOM.
+      var chars = nativeEvent.data; // If it's a spacebar character, assume that we have already handled
+      // it at the keypress level and bail immediately. Android Chrome
+      // doesn't give us keycodes, so we need to ignore it.
+
+      if (chars === SPACEBAR_CHAR && hasSpaceKeypress) {
+        return null;
+      }
+
+      return chars;
+
+    default:
+      // For other native event types, do nothing.
+      return null;
+  }
+}
+/**
+ * For browsers that do not provide the `textInput` event, extract the
+ * appropriate string to use for SyntheticInputEvent.
+ *
+ * @param {number} topLevelType Number from `TopLevelEventTypes`.
+ * @param {object} nativeEvent Native browser event.
+ * @return {?string} The fallback string for this `beforeInput` event.
+ */
+
+
+function getFallbackBeforeInputChars(topLevelType, nativeEvent) {
+  // If we are currently composing (IME) and using a fallback to do so,
+  // try to extract the composed characters from the fallback object.
+  // If composition event is available, we extract a string only at
+  // compositionevent, otherwise extract it at fallback events.
+  if (isComposing) {
+    if (topLevelType === TOP_COMPOSITION_END || !canUseCompositionEvent && isFallbackCompositionEnd(topLevelType, nativeEvent)) {
+      var chars = getData();
+      reset();
+      isComposing = false;
+      return chars;
+    }
+
+    return null;
+  }
+
+  switch (topLevelType) {
+    case TOP_PASTE:
+      // If a paste event occurs after a keypress, throw out the input
+      // chars. Paste events should not lead to BeforeInput events.
+      return null;
+
+    case TOP_KEY_PRESS:
+      /**
+       * As of v27, Firefox may fire keypress events even when no character
+       * will be inserted. A few possibilities:
+       *
+       * - `which` is `0`. Arrow keys, Esc key, etc.
+       *
+       * - `which` is the pressed key code, but no char is available.
+       *   Ex: 'AltGr + d` in Polish. There is no modified character for
+       *   this key combination and no character is inserted into the
+       *   document, but FF fires the keypress for char code `100` anyway.
+       *   No `input` event will occur.
+       *
+       * - `which` is the pressed key code, but a command combination is
+       *   being used. Ex: `Cmd+C`. No character is inserted, and no
+       *   `input` event will occur.
+       */
+      if (!isKeypressCommand(nativeEvent)) {
+        // IE fires the `keypress` event when a user types an emoji via
+        // Touch keyboard of Windows.  In such a case, the `char` property
+        // holds an emoji character like `\uD83D\uDE0A`.  Because its length
+        // is 2, the property `which` does not represent an emoji correctly.
+        // In such a case, we directly return the `char` property instead of
+        // using `which`.
+        if (nativeEvent.char && nativeEvent.char.length > 1) {
+          return nativeEvent.char;
+        } else if (nativeEvent.which) {
+          return String.fromCharCode(nativeEvent.which);
+        }
+      }
+
+      return null;
+
+    case TOP_COMPOSITION_END:
+      return useFallbackCompositionData && !isUsingKoreanIME(nativeEvent) ? null : nativeEvent.data;
+
+    default:
+      return null;
+  }
+}
+/**
+ * Extract a SyntheticInputEvent for `beforeInput`, based on either native
+ * `textInput` or fallback behavior.
+ *
+ * @return {?object} A SyntheticInputEvent.
+ */
+
+
+function extractBeforeInputEvent(topLevelType, targetInst, nativeEvent, nativeEventTarget) {
+  var chars;
+
+  if (canUseTextInputEvent) {
+    chars = getNativeBeforeInputChars(topLevelType, nativeEvent);
+  } else {
+    chars = getFallbackBeforeInputChars(topLevelType, nativeEvent);
+  } // If no characters are being inserted, no BeforeInput event should
+  // be fired.
+
+
+  if (!chars) {
+    return null;
+  }
+
+  var event = SyntheticInputEvent.getPooled(eventTypes.beforeInput, targetInst, nativeEvent, nativeEventTarget);
+  event.data = chars;
+  accumulateTwoPhaseDispatches(event);
+  return event;
+}
+/**
+ * Create an `onBeforeInput` event to match
+ * http://www.w3.org/TR/2013/WD-DOM-Level-3-Events-20131105/#events-inputevents.
+ *
+ * This event plugin is based on the native `textInput` event
+ * available in Chrome, Safari, Opera, and IE. This event fires after
+ * `onKeyPress` and `onCompositionEnd`, but before `onInput`.
+ *
+ * `beforeInput` is spec'd but not implemented in any browsers, and
+ * the `input` event does not provide any useful information about what has
+ * actually been added, contrary to the spec. Thus, `textInput` is the best
+ * available event to identify the characters that have actually been inserted
+ * into the target node.
+ *
+ * This plugin is also responsible for emitting `composition` events, thus
+ * allowing us to share composition fallback code for both `beforeInput` and
+ * `composition` event types.
+ */
+
+
+var BeforeInputEventPlugin = {
+  eventTypes: eventTypes,
+  extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) {
+    var composition = extractCompositionEvent(topLevelType, targetInst, nativeEvent, nativeEventTarget);
+    var beforeInput = extractBeforeInputEvent(topLevelType, targetInst, nativeEvent, nativeEventTarget);
+
+    if (composition === null) {
+      return beforeInput;
+    }
+
+    if (beforeInput === null) {
+      return composition;
+    }
+
+    return [composition, beforeInput];
+  }
+};
+
+/**
+ * @see http://www.whatwg.org/specs/web-apps/current-work/multipage/the-input-element.html#input-type-attr-summary
+ */
+var supportedInputTypes = {
+  color: true,
+  date: true,
+  datetime: true,
+  'datetime-local': true,
+  email: true,
+  month: true,
+  number: true,
+  password: true,
+  range: true,
+  search: true,
+  tel: true,
+  text: true,
+  time: true,
+  url: true,
+  week: true
+};
+
+function isTextInputElement(elem) {
+  var nodeName = elem && elem.nodeName && elem.nodeName.toLowerCase();
+
+  if (nodeName === 'input') {
+    return !!supportedInputTypes[elem.type];
+  }
+
+  if (nodeName === 'textarea') {
+    return true;
+  }
+
+  return false;
+}
+
+var eventTypes$1 = {
+  change: {
+    phasedRegistrationNames: {
+      bubbled: 'onChange',
+      captured: 'onChangeCapture'
+    },
+    dependencies: [TOP_BLUR, TOP_CHANGE, TOP_CLICK, TOP_FOCUS, TOP_INPUT, TOP_KEY_DOWN, TOP_KEY_UP, TOP_SELECTION_CHANGE]
+  }
+};
+
+function createAndAccumulateChangeEvent(inst, nativeEvent, target) {
+  var event = SyntheticEvent.getPooled(eventTypes$1.change, inst, nativeEvent, target);
+  event.type = 'change'; // Flag this event loop as needing state restore.
+
+  enqueueStateRestore(target);
+  accumulateTwoPhaseDispatches(event);
+  return event;
+}
+/**
+ * For IE shims
+ */
+
+
+var activeElement = null;
+var activeElementInst = null;
+/**
+ * SECTION: handle `change` event
+ */
+
+function shouldUseChangeEvent(elem) {
+  var nodeName = elem.nodeName && elem.nodeName.toLowerCase();
+  return nodeName === 'select' || nodeName === 'input' && elem.type === 'file';
+}
+
+function manualDispatchChangeEvent(nativeEvent) {
+  var event = createAndAccumulateChangeEvent(activeElementInst, nativeEvent, getEventTarget(nativeEvent)); // If change and propertychange bubbled, we'd just bind to it like all the
+  // other events and have it go through ReactBrowserEventEmitter. Since it
+  // doesn't, we manually listen for the events and so we have to enqueue and
+  // process the abstract event manually.
+  //
+  // Batching is necessary here in order to ensure that all event handlers run
+  // before the next rerender (including event handlers attached to ancestor
+  // elements instead of directly on the input). Without this, controlled
+  // components don't work properly in conjunction with event bubbling because
+  // the component is rerendered and the value reverted before all the event
+  // handlers can run. See https://github.com/facebook/react/issues/708.
+
+  batchedUpdates(runEventInBatch, event);
+}
+
+function runEventInBatch(event) {
+  runEventsInBatch(event);
+}
+
+function getInstIfValueChanged(targetInst) {
+  var targetNode = getNodeFromInstance$1(targetInst);
+
+  if (updateValueIfChanged(targetNode)) {
+    return targetInst;
+  }
+}
+
+function getTargetInstForChangeEvent(topLevelType, targetInst) {
+  if (topLevelType === TOP_CHANGE) {
+    return targetInst;
+  }
+}
+/**
+ * SECTION: handle `input` event
+ */
+
+
+var isInputEventSupported = false;
+
+if (canUseDOM) {
+  // IE9 claims to support the input event but fails to trigger it when
+  // deleting text, so we ignore its input events.
+  isInputEventSupported = isEventSupported('input') && (!document.documentMode || document.documentMode > 9);
+}
+/**
+ * (For IE <=9) Starts tracking propertychange events on the passed-in element
+ * and override the value property so that we can distinguish user events from
+ * value changes in JS.
+ */
+
+
+function startWatchingForValueChange(target, targetInst) {
+  activeElement = target;
+  activeElementInst = targetInst;
+  activeElement.attachEvent('onpropertychange', handlePropertyChange);
+}
+/**
+ * (For IE <=9) Removes the event listeners from the currently-tracked element,
+ * if any exists.
+ */
+
+
+function stopWatchingForValueChange() {
+  if (!activeElement) {
+    return;
+  }
+
+  activeElement.detachEvent('onpropertychange', handlePropertyChange);
+  activeElement = null;
+  activeElementInst = null;
+}
+/**
+ * (For IE <=9) Handles a propertychange event, sending a `change` event if
+ * the value of the active element has changed.
+ */
+
+
+function handlePropertyChange(nativeEvent) {
+  if (nativeEvent.propertyName !== 'value') {
+    return;
+  }
+
+  if (getInstIfValueChanged(activeElementInst)) {
+    manualDispatchChangeEvent(nativeEvent);
+  }
+}
+
+function handleEventsForInputEventPolyfill(topLevelType, target, targetInst) {
+  if (topLevelType === TOP_FOCUS) {
+    // In IE9, propertychange fires for most input events but is buggy and
+    // doesn't fire when text is deleted, but conveniently, selectionchange
+    // appears to fire in all of the remaining cases so we catch those and
+    // forward the event if the value has changed
+    // In either case, we don't want to call the event handler if the value
+    // is changed from JS so we redefine a setter for `.value` that updates
+    // our activeElementValue variable, allowing us to ignore those changes
+    //
+    // stopWatching() should be a noop here but we call it just in case we
+    // missed a blur event somehow.
+    stopWatchingForValueChange();
+    startWatchingForValueChange(target, targetInst);
+  } else if (topLevelType === TOP_BLUR) {
+    stopWatchingForValueChange();
+  }
+} // For IE8 and IE9.
+
+
+function getTargetInstForInputEventPolyfill(topLevelType, targetInst) {
+  if (topLevelType === TOP_SELECTION_CHANGE || topLevelType === TOP_KEY_UP || topLevelType === TOP_KEY_DOWN) {
+    // On the selectionchange event, the target is just document which isn't
+    // helpful for us so just check activeElement instead.
+    //
+    // 99% of the time, keydown and keyup aren't necessary. IE8 fails to fire
+    // propertychange on the first input event after setting `value` from a
+    // script and fires only keydown, keypress, keyup. Catching keyup usually
+    // gets it and catching keydown lets us fire an event for the first
+    // keystroke if user does a key repeat (it'll be a little delayed: right
+    // before the second keystroke). Other input methods (e.g., paste) seem to
+    // fire selectionchange normally.
+    return getInstIfValueChanged(activeElementInst);
+  }
+}
+/**
+ * SECTION: handle `click` event
+ */
+
+
+function shouldUseClickEvent(elem) {
+  // Use the `click` event to detect changes to checkbox and radio inputs.
+  // This approach works across all browsers, whereas `change` does not fire
+  // until `blur` in IE8.
+  var nodeName = elem.nodeName;
+  return nodeName && nodeName.toLowerCase() === 'input' && (elem.type === 'checkbox' || elem.type === 'radio');
+}
+
+function getTargetInstForClickEvent(topLevelType, targetInst) {
+  if (topLevelType === TOP_CLICK) {
+    return getInstIfValueChanged(targetInst);
+  }
+}
+
+function getTargetInstForInputOrChangeEvent(topLevelType, targetInst) {
+  if (topLevelType === TOP_INPUT || topLevelType === TOP_CHANGE) {
+    return getInstIfValueChanged(targetInst);
+  }
+}
+
+function handleControlledInputBlur(node) {
+  var state = node._wrapperState;
+
+  if (!state || !state.controlled || node.type !== 'number') {
+    return;
+  }
+
+  {
+    // If controlled, assign the value attribute to the current value on blur
+    setDefaultValue(node, 'number', node.value);
+  }
+}
+/**
+ * This plugin creates an `onChange` event that normalizes change events
+ * across form elements. This event fires at a time when it's possible to
+ * change the element's value without seeing a flicker.
+ *
+ * Supported elements are:
+ * - input (see `isTextInputElement`)
+ * - textarea
+ * - select
+ */
+
+
+var ChangeEventPlugin = {
+  eventTypes: eventTypes$1,
+  _isInputEventSupported: isInputEventSupported,
+  extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) {
+    var targetNode = targetInst ? getNodeFromInstance$1(targetInst) : window;
+    var getTargetInstFunc, handleEventFunc;
+
+    if (shouldUseChangeEvent(targetNode)) {
+      getTargetInstFunc = getTargetInstForChangeEvent;
+    } else if (isTextInputElement(targetNode)) {
+      if (isInputEventSupported) {
+        getTargetInstFunc = getTargetInstForInputOrChangeEvent;
+      } else {
+        getTargetInstFunc = getTargetInstForInputEventPolyfill;
+        handleEventFunc = handleEventsForInputEventPolyfill;
+      }
+    } else if (shouldUseClickEvent(targetNode)) {
+      getTargetInstFunc = getTargetInstForClickEvent;
+    }
+
+    if (getTargetInstFunc) {
+      var inst = getTargetInstFunc(topLevelType, targetInst);
+
+      if (inst) {
+        var event = createAndAccumulateChangeEvent(inst, nativeEvent, nativeEventTarget);
+        return event;
+      }
+    }
+
+    if (handleEventFunc) {
+      handleEventFunc(topLevelType, targetNode, targetInst);
+    } // When blurring, set the value attribute for number inputs
+
+
+    if (topLevelType === TOP_BLUR) {
+      handleControlledInputBlur(targetNode);
+    }
+  }
+};
+
+var SyntheticUIEvent = SyntheticEvent.extend({
+  view: null,
+  detail: null
+});
+
+/**
+ * Translation from modifier key to the associated property in the event.
+ * @see http://www.w3.org/TR/DOM-Level-3-Events/#keys-Modifiers
+ */
+var modifierKeyToProp = {
+  Alt: 'altKey',
+  Control: 'ctrlKey',
+  Meta: 'metaKey',
+  Shift: 'shiftKey'
+}; // Older browsers (Safari <= 10, iOS Safari <= 10.2) do not support
+// getModifierState. If getModifierState is not supported, we map it to a set of
+// modifier keys exposed by the event. In this case, Lock-keys are not supported.
+
+function modifierStateGetter(keyArg) {
+  var syntheticEvent = this;
+  var nativeEvent = syntheticEvent.nativeEvent;
+
+  if (nativeEvent.getModifierState) {
+    return nativeEvent.getModifierState(keyArg);
+  }
+
+  var keyProp = modifierKeyToProp[keyArg];
+  return keyProp ? !!nativeEvent[keyProp] : false;
+}
+
+function getEventModifierState(nativeEvent) {
+  return modifierStateGetter;
+}
+
+var previousScreenX = 0;
+var previousScreenY = 0; // Use flags to signal movementX/Y has already been set
+
+var isMovementXSet = false;
+var isMovementYSet = false;
+/**
+ * @interface MouseEvent
+ * @see http://www.w3.org/TR/DOM-Level-3-Events/
+ */
+
+var SyntheticMouseEvent = SyntheticUIEvent.extend({
+  screenX: null,
+  screenY: null,
+  clientX: null,
+  clientY: null,
+  pageX: null,
+  pageY: null,
+  ctrlKey: null,
+  shiftKey: null,
+  altKey: null,
+  metaKey: null,
+  getModifierState: getEventModifierState,
+  button: null,
+  buttons: null,
+  relatedTarget: function (event) {
+    return event.relatedTarget || (event.fromElement === event.srcElement ? event.toElement : event.fromElement);
+  },
+  movementX: function (event) {
+    if ('movementX' in event) {
+      return event.movementX;
+    }
+
+    var screenX = previousScreenX;
+    previousScreenX = event.screenX;
+
+    if (!isMovementXSet) {
+      isMovementXSet = true;
+      return 0;
+    }
+
+    return event.type === 'mousemove' ? event.screenX - screenX : 0;
+  },
+  movementY: function (event) {
+    if ('movementY' in event) {
+      return event.movementY;
+    }
+
+    var screenY = previousScreenY;
+    previousScreenY = event.screenY;
+
+    if (!isMovementYSet) {
+      isMovementYSet = true;
+      return 0;
+    }
+
+    return event.type === 'mousemove' ? event.screenY - screenY : 0;
+  }
+});
+
+/**
+ * @interface PointerEvent
+ * @see http://www.w3.org/TR/pointerevents/
+ */
+
+var SyntheticPointerEvent = SyntheticMouseEvent.extend({
+  pointerId: null,
+  width: null,
+  height: null,
+  pressure: null,
+  tangentialPressure: null,
+  tiltX: null,
+  tiltY: null,
+  twist: null,
+  pointerType: null,
+  isPrimary: null
+});
+
+var eventTypes$2 = {
+  mouseEnter: {
+    registrationName: 'onMouseEnter',
+    dependencies: [TOP_MOUSE_OUT, TOP_MOUSE_OVER]
+  },
+  mouseLeave: {
+    registrationName: 'onMouseLeave',
+    dependencies: [TOP_MOUSE_OUT, TOP_MOUSE_OVER]
+  },
+  pointerEnter: {
+    registrationName: 'onPointerEnter',
+    dependencies: [TOP_POINTER_OUT, TOP_POINTER_OVER]
+  },
+  pointerLeave: {
+    registrationName: 'onPointerLeave',
+    dependencies: [TOP_POINTER_OUT, TOP_POINTER_OVER]
+  }
+};
+var EnterLeaveEventPlugin = {
+  eventTypes: eventTypes$2,
+
+  /**
+   * For almost every interaction we care about, there will be both a top-level
+   * `mouseover` and `mouseout` event that occurs. Only use `mouseout` so that
+   * we do not extract duplicate events. However, moving the mouse into the
+   * browser from outside will not fire a `mouseout` event. In this case, we use
+   * the `mouseover` top-level event.
+   */
+  extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) {
+    var isOverEvent = topLevelType === TOP_MOUSE_OVER || topLevelType === TOP_POINTER_OVER;
+    var isOutEvent = topLevelType === TOP_MOUSE_OUT || topLevelType === TOP_POINTER_OUT;
+
+    if (isOverEvent && (eventSystemFlags & IS_REPLAYED) === 0 && (nativeEvent.relatedTarget || nativeEvent.fromElement)) {
+      // If this is an over event with a target, then we've already dispatched
+      // the event in the out event of the other target. If this is replayed,
+      // then it's because we couldn't dispatch against this target previously
+      // so we have to do it now instead.
+      return null;
+    }
+
+    if (!isOutEvent && !isOverEvent) {
+      // Must not be a mouse or pointer in or out - ignoring.
+      return null;
+    }
+
+    var win;
+
+    if (nativeEventTarget.window === nativeEventTarget) {
+      // `nativeEventTarget` is probably a window object.
+      win = nativeEventTarget;
+    } else {
+      // TODO: Figure out why `ownerDocument` is sometimes undefined in IE8.
+      var doc = nativeEventTarget.ownerDocument;
+
+      if (doc) {
+        win = doc.defaultView || doc.parentWindow;
+      } else {
+        win = window;
+      }
+    }
+
+    var from;
+    var to;
+
+    if (isOutEvent) {
+      from = targetInst;
+      var related = nativeEvent.relatedTarget || nativeEvent.toElement;
+      to = related ? getClosestInstanceFromNode(related) : null;
+
+      if (to !== null) {
+        var nearestMounted = getNearestMountedFiber(to);
+
+        if (to !== nearestMounted || to.tag !== HostComponent && to.tag !== HostText) {
+          to = null;
+        }
+      }
+    } else {
+      // Moving to a node from outside the window.
+      from = null;
+      to = targetInst;
+    }
+
+    if (from === to) {
+      // Nothing pertains to our managed components.
+      return null;
+    }
+
+    var eventInterface, leaveEventType, enterEventType, eventTypePrefix;
+
+    if (topLevelType === TOP_MOUSE_OUT || topLevelType === TOP_MOUSE_OVER) {
+      eventInterface = SyntheticMouseEvent;
+      leaveEventType = eventTypes$2.mouseLeave;
+      enterEventType = eventTypes$2.mouseEnter;
+      eventTypePrefix = 'mouse';
+    } else if (topLevelType === TOP_POINTER_OUT || topLevelType === TOP_POINTER_OVER) {
+      eventInterface = SyntheticPointerEvent;
+      leaveEventType = eventTypes$2.pointerLeave;
+      enterEventType = eventTypes$2.pointerEnter;
+      eventTypePrefix = 'pointer';
+    }
+
+    var fromNode = from == null ? win : getNodeFromInstance$1(from);
+    var toNode = to == null ? win : getNodeFromInstance$1(to);
+    var leave = eventInterface.getPooled(leaveEventType, from, nativeEvent, nativeEventTarget);
+    leave.type = eventTypePrefix + 'leave';
+    leave.target = fromNode;
+    leave.relatedTarget = toNode;
+    var enter = eventInterface.getPooled(enterEventType, to, nativeEvent, nativeEventTarget);
+    enter.type = eventTypePrefix + 'enter';
+    enter.target = toNode;
+    enter.relatedTarget = fromNode;
+    accumulateEnterLeaveDispatches(leave, enter, from, to); // If we are not processing the first ancestor, then we
+    // should not process the same nativeEvent again, as we
+    // will have already processed it in the first ancestor.
+
+    if ((eventSystemFlags & IS_FIRST_ANCESTOR) === 0) {
+      return [leave];
+    }
+
+    return [leave, enter];
+  }
+};
+
+/**
+ * inlined Object.is polyfill to avoid requiring consumers ship their own
+ * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
+ */
+function is(x, y) {
+  return x === y && (x !== 0 || 1 / x === 1 / y) || x !== x && y !== y // eslint-disable-line no-self-compare
+  ;
+}
+
+var objectIs = typeof Object.is === 'function' ? Object.is : is;
+
+var hasOwnProperty$2 = Object.prototype.hasOwnProperty;
+/**
+ * Performs equality by iterating through keys on an object and returning false
+ * when any key has values which are not strictly equal between the arguments.
+ * Returns true when the values of all keys are strictly equal.
+ */
+
+function shallowEqual(objA, objB) {
+  if (objectIs(objA, objB)) {
+    return true;
+  }
+
+  if (typeof objA !== 'object' || objA === null || typeof objB !== 'object' || objB === null) {
+    return false;
+  }
+
+  var keysA = Object.keys(objA);
+  var keysB = Object.keys(objB);
+
+  if (keysA.length !== keysB.length) {
+    return false;
+  } // Test for A's keys different from B.
+
+
+  for (var i = 0; i < keysA.length; i++) {
+    if (!hasOwnProperty$2.call(objB, keysA[i]) || !objectIs(objA[keysA[i]], objB[keysA[i]])) {
+      return false;
+    }
+  }
+
+  return true;
+}
+
+var skipSelectionChangeEvent = canUseDOM && 'documentMode' in document && document.documentMode <= 11;
+var eventTypes$3 = {
+  select: {
+    phasedRegistrationNames: {
+      bubbled: 'onSelect',
+      captured: 'onSelectCapture'
+    },
+    dependencies: [TOP_BLUR, TOP_CONTEXT_MENU, TOP_DRAG_END, TOP_FOCUS, TOP_KEY_DOWN, TOP_KEY_UP, TOP_MOUSE_DOWN, TOP_MOUSE_UP, TOP_SELECTION_CHANGE]
+  }
+};
+var activeElement$1 = null;
+var activeElementInst$1 = null;
+var lastSelection = null;
+var mouseDown = false;
+/**
+ * Get an object which is a unique representation of the current selection.
+ *
+ * The return value will not be consistent across nodes or browsers, but
+ * two identical selections on the same node will return identical objects.
+ *
+ * @param {DOMElement} node
+ * @return {object}
+ */
+
+function getSelection$1(node) {
+  if ('selectionStart' in node && hasSelectionCapabilities(node)) {
+    return {
+      start: node.selectionStart,
+      end: node.selectionEnd
+    };
+  } else {
+    var win = node.ownerDocument && node.ownerDocument.defaultView || window;
+    var selection = win.getSelection();
+    return {
+      anchorNode: selection.anchorNode,
+      anchorOffset: selection.anchorOffset,
+      focusNode: selection.focusNode,
+      focusOffset: selection.focusOffset
+    };
+  }
+}
+/**
+ * Get document associated with the event target.
+ *
+ * @param {object} nativeEventTarget
+ * @return {Document}
+ */
+
+
+function getEventTargetDocument(eventTarget) {
+  return eventTarget.window === eventTarget ? eventTarget.document : eventTarget.nodeType === DOCUMENT_NODE ? eventTarget : eventTarget.ownerDocument;
+}
+/**
+ * Poll selection to see whether it's changed.
+ *
+ * @param {object} nativeEvent
+ * @param {object} nativeEventTarget
+ * @return {?SyntheticEvent}
+ */
+
+
+function constructSelectEvent(nativeEvent, nativeEventTarget) {
+  // Ensure we have the right element, and that the user is not dragging a
+  // selection (this matches native `select` event behavior). In HTML5, select
+  // fires only on input and textarea thus if there's no focused element we
+  // won't dispatch.
+  var doc = getEventTargetDocument(nativeEventTarget);
+
+  if (mouseDown || activeElement$1 == null || activeElement$1 !== getActiveElement(doc)) {
+    return null;
+  } // Only fire when selection has actually changed.
+
+
+  var currentSelection = getSelection$1(activeElement$1);
+
+  if (!lastSelection || !shallowEqual(lastSelection, currentSelection)) {
+    lastSelection = currentSelection;
+    var syntheticEvent = SyntheticEvent.getPooled(eventTypes$3.select, activeElementInst$1, nativeEvent, nativeEventTarget);
+    syntheticEvent.type = 'select';
+    syntheticEvent.target = activeElement$1;
+    accumulateTwoPhaseDispatches(syntheticEvent);
+    return syntheticEvent;
+  }
+
+  return null;
+}
+/**
+ * This plugin creates an `onSelect` event that normalizes select events
+ * across form elements.
+ *
+ * Supported elements are:
+ * - input (see `isTextInputElement`)
+ * - textarea
+ * - contentEditable
+ *
+ * This differs from native browser implementations in the following ways:
+ * - Fires on contentEditable fields as well as inputs.
+ * - Fires for collapsed selection.
+ * - Fires after user input.
+ */
+
+
+var SelectEventPlugin = {
+  eventTypes: eventTypes$3,
+  extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags, container) {
+    var containerOrDoc = container || getEventTargetDocument(nativeEventTarget); // Track whether all listeners exists for this plugin. If none exist, we do
+    // not extract events. See #3639.
+
+    if (!containerOrDoc || !isListeningToAllDependencies('onSelect', containerOrDoc)) {
+      return null;
+    }
+
+    var targetNode = targetInst ? getNodeFromInstance$1(targetInst) : window;
+
+    switch (topLevelType) {
+      // Track the input node that has focus.
+      case TOP_FOCUS:
+        if (isTextInputElement(targetNode) || targetNode.contentEditable === 'true') {
+          activeElement$1 = targetNode;
+          activeElementInst$1 = targetInst;
+          lastSelection = null;
+        }
+
+        break;
+
+      case TOP_BLUR:
+        activeElement$1 = null;
+        activeElementInst$1 = null;
+        lastSelection = null;
+        break;
+      // Don't fire the event while the user is dragging. This matches the
+      // semantics of the native select event.
+
+      case TOP_MOUSE_DOWN:
+        mouseDown = true;
+        break;
+
+      case TOP_CONTEXT_MENU:
+      case TOP_MOUSE_UP:
+      case TOP_DRAG_END:
+        mouseDown = false;
+        return constructSelectEvent(nativeEvent, nativeEventTarget);
+      // Chrome and IE fire non-standard event when selection is changed (and
+      // sometimes when it hasn't). IE's event fires out of order with respect
+      // to key and input events on deletion, so we discard it.
+      //
+      // Firefox doesn't support selectionchange, so check selection status
+      // after each key entry. The selection changes after keydown and before
+      // keyup, but we check on keydown as well in the case of holding down a
+      // key, when multiple keydown events are fired but only one keyup is.
+      // This is also our approach for IE handling, for the reason above.
+
+      case TOP_SELECTION_CHANGE:
+        if (skipSelectionChangeEvent) {
+          break;
+        }
+
+      // falls through
+
+      case TOP_KEY_DOWN:
+      case TOP_KEY_UP:
+        return constructSelectEvent(nativeEvent, nativeEventTarget);
+    }
+
+    return null;
+  }
+};
+
+/**
+ * @interface Event
+ * @see http://www.w3.org/TR/css3-animations/#AnimationEvent-interface
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/AnimationEvent
+ */
+
+var SyntheticAnimationEvent = SyntheticEvent.extend({
+  animationName: null,
+  elapsedTime: null,
+  pseudoElement: null
+});
+
+/**
+ * @interface Event
+ * @see http://www.w3.org/TR/clipboard-apis/
+ */
+
+var SyntheticClipboardEvent = SyntheticEvent.extend({
+  clipboardData: function (event) {
+    return 'clipboardData' in event ? event.clipboardData : window.clipboardData;
+  }
+});
+
+/**
+ * @interface FocusEvent
+ * @see http://www.w3.org/TR/DOM-Level-3-Events/
+ */
+
+var SyntheticFocusEvent = SyntheticUIEvent.extend({
+  relatedTarget: null
+});
+
+/**
+ * `charCode` represents the actual "character code" and is safe to use with
+ * `String.fromCharCode`. As such, only keys that correspond to printable
+ * characters produce a valid `charCode`, the only exception to this is Enter.
+ * The Tab-key is considered non-printable and does not have a `charCode`,
+ * presumably because it does not produce a tab-character in browsers.
+ *
+ * @param {object} nativeEvent Native browser event.
+ * @return {number} Normalized `charCode` property.
+ */
+function getEventCharCode(nativeEvent) {
+  var charCode;
+  var keyCode = nativeEvent.keyCode;
+
+  if ('charCode' in nativeEvent) {
+    charCode = nativeEvent.charCode; // FF does not set `charCode` for the Enter-key, check against `keyCode`.
+
+    if (charCode === 0 && keyCode === 13) {
+      charCode = 13;
+    }
+  } else {
+    // IE8 does not implement `charCode`, but `keyCode` has the correct value.
+    charCode = keyCode;
+  } // IE and Edge (on Windows) and Chrome / Safari (on Windows and Linux)
+  // report Enter as charCode 10 when ctrl is pressed.
+
+
+  if (charCode === 10) {
+    charCode = 13;
+  } // Some non-printable keys are reported in `charCode`/`keyCode`, discard them.
+  // Must not discard the (non-)printable Enter-key.
+
+
+  if (charCode >= 32 || charCode === 13) {
+    return charCode;
+  }
+
+  return 0;
+}
+
+/**
+ * Normalization of deprecated HTML5 `key` values
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent#Key_names
+ */
+
+var normalizeKey = {
+  Esc: 'Escape',
+  Spacebar: ' ',
+  Left: 'ArrowLeft',
+  Up: 'ArrowUp',
+  Right: 'ArrowRight',
+  Down: 'ArrowDown',
+  Del: 'Delete',
+  Win: 'OS',
+  Menu: 'ContextMenu',
+  Apps: 'ContextMenu',
+  Scroll: 'ScrollLock',
+  MozPrintableKey: 'Unidentified'
+};
+/**
+ * Translation from legacy `keyCode` to HTML5 `key`
+ * Only special keys supported, all others depend on keyboard layout or browser
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent#Key_names
+ */
+
+var translateToKey = {
+  '8': 'Backspace',
+  '9': 'Tab',
+  '12': 'Clear',
+  '13': 'Enter',
+  '16': 'Shift',
+  '17': 'Control',
+  '18': 'Alt',
+  '19': 'Pause',
+  '20': 'CapsLock',
+  '27': 'Escape',
+  '32': ' ',
+  '33': 'PageUp',
+  '34': 'PageDown',
+  '35': 'End',
+  '36': 'Home',
+  '37': 'ArrowLeft',
+  '38': 'ArrowUp',
+  '39': 'ArrowRight',
+  '40': 'ArrowDown',
+  '45': 'Insert',
+  '46': 'Delete',
+  '112': 'F1',
+  '113': 'F2',
+  '114': 'F3',
+  '115': 'F4',
+  '116': 'F5',
+  '117': 'F6',
+  '118': 'F7',
+  '119': 'F8',
+  '120': 'F9',
+  '121': 'F10',
+  '122': 'F11',
+  '123': 'F12',
+  '144': 'NumLock',
+  '145': 'ScrollLock',
+  '224': 'Meta'
+};
+/**
+ * @param {object} nativeEvent Native browser event.
+ * @return {string} Normalized `key` property.
+ */
+
+function getEventKey(nativeEvent) {
+  if (nativeEvent.key) {
+    // Normalize inconsistent values reported by browsers due to
+    // implementations of a working draft specification.
+    // FireFox implements `key` but returns `MozPrintableKey` for all
+    // printable characters (normalized to `Unidentified`), ignore it.
+    var key = normalizeKey[nativeEvent.key] || nativeEvent.key;
+
+    if (key !== 'Unidentified') {
+      return key;
+    }
+  } // Browser does not implement `key`, polyfill as much of it as we can.
+
+
+  if (nativeEvent.type === 'keypress') {
+    var charCode = getEventCharCode(nativeEvent); // The enter-key is technically both printable and non-printable and can
+    // thus be captured by `keypress`, no other non-printable key should.
+
+    return charCode === 13 ? 'Enter' : String.fromCharCode(charCode);
+  }
+
+  if (nativeEvent.type === 'keydown' || nativeEvent.type === 'keyup') {
+    // While user keyboard layout determines the actual meaning of each
+    // `keyCode` value, almost all function keys have a universal value.
+    return translateToKey[nativeEvent.keyCode] || 'Unidentified';
+  }
+
+  return '';
+}
+
+/**
+ * @interface KeyboardEvent
+ * @see http://www.w3.org/TR/DOM-Level-3-Events/
+ */
+
+var SyntheticKeyboardEvent = SyntheticUIEvent.extend({
+  key: getEventKey,
+  location: null,
+  ctrlKey: null,
+  shiftKey: null,
+  altKey: null,
+  metaKey: null,
+  repeat: null,
+  locale: null,
+  getModifierState: getEventModifierState,
+  // Legacy Interface
+  charCode: function (event) {
+    // `charCode` is the result of a KeyPress event and represents the value of
+    // the actual printable character.
+    // KeyPress is deprecated, but its replacement is not yet final and not
+    // implemented in any major browser. Only KeyPress has charCode.
+    if (event.type === 'keypress') {
+      return getEventCharCode(event);
+    }
+
+    return 0;
+  },
+  keyCode: function (event) {
+    // `keyCode` is the result of a KeyDown/Up event and represents the value of
+    // physical keyboard key.
+    // The actual meaning of the value depends on the users' keyboard layout
+    // which cannot be detected. Assuming that it is a US keyboard layout
+    // provides a surprisingly accurate mapping for US and European users.
+    // Due to this, it is left to the user to implement at this time.
+    if (event.type === 'keydown' || event.type === 'keyup') {
+      return event.keyCode;
+    }
+
+    return 0;
+  },
+  which: function (event) {
+    // `which` is an alias for either `keyCode` or `charCode` depending on the
+    // type of the event.
+    if (event.type === 'keypress') {
+      return getEventCharCode(event);
+    }
+
+    if (event.type === 'keydown' || event.type === 'keyup') {
+      return event.keyCode;
+    }
+
+    return 0;
+  }
+});
+
+/**
+ * @interface DragEvent
+ * @see http://www.w3.org/TR/DOM-Level-3-Events/
+ */
+
+var SyntheticDragEvent = SyntheticMouseEvent.extend({
+  dataTransfer: null
+});
+
+/**
+ * @interface TouchEvent
+ * @see http://www.w3.org/TR/touch-events/
+ */
+
+var SyntheticTouchEvent = SyntheticUIEvent.extend({
+  touches: null,
+  targetTouches: null,
+  changedTouches: null,
+  altKey: null,
+  metaKey: null,
+  ctrlKey: null,
+  shiftKey: null,
+  getModifierState: getEventModifierState
+});
+
+/**
+ * @interface Event
+ * @see http://www.w3.org/TR/2009/WD-css3-transitions-20090320/#transition-events-
+ * @see https://developer.mozilla.org/en-US/docs/Web/API/TransitionEvent
+ */
+
+var SyntheticTransitionEvent = SyntheticEvent.extend({
+  propertyName: null,
+  elapsedTime: null,
+  pseudoElement: null
+});
+
+/**
+ * @interface WheelEvent
+ * @see http://www.w3.org/TR/DOM-Level-3-Events/
+ */
+
+var SyntheticWheelEvent = SyntheticMouseEvent.extend({
+  deltaX: function (event) {
+    return 'deltaX' in event ? event.deltaX : // Fallback to `wheelDeltaX` for Webkit and normalize (right is positive).
+    'wheelDeltaX' in event ? -event.wheelDeltaX : 0;
+  },
+  deltaY: function (event) {
+    return 'deltaY' in event ? event.deltaY : // Fallback to `wheelDeltaY` for Webkit and normalize (down is positive).
+    'wheelDeltaY' in event ? -event.wheelDeltaY : // Fallback to `wheelDelta` for IE<9 and normalize (down is positive).
+    'wheelDelta' in event ? -event.wheelDelta : 0;
+  },
+  deltaZ: null,
+  // Browsers without "deltaMode" is reporting in raw wheel delta where one
+  // notch on the scroll is always +/- 120, roughly equivalent to pixels.
+  // A good approximation of DOM_DELTA_LINE (1) is 5% of viewport size or
+  // ~40 pixels, for DOM_DELTA_SCREEN (2) it is 87.5% of viewport size.
+  deltaMode: null
+});
+
+var knownHTMLTopLevelTypes = [TOP_ABORT, TOP_CANCEL, TOP_CAN_PLAY, TOP_CAN_PLAY_THROUGH, TOP_CLOSE, TOP_DURATION_CHANGE, TOP_EMPTIED, TOP_ENCRYPTED, TOP_ENDED, TOP_ERROR, TOP_INPUT, TOP_INVALID, TOP_LOAD, TOP_LOADED_DATA, TOP_LOADED_METADATA, TOP_LOAD_START, TOP_PAUSE, TOP_PLAY, TOP_PLAYING, TOP_PROGRESS, TOP_RATE_CHANGE, TOP_RESET, TOP_SEEKED, TOP_SEEKING, TOP_STALLED, TOP_SUBMIT, TOP_SUSPEND, TOP_TIME_UPDATE, TOP_TOGGLE, TOP_VOLUME_CHANGE, TOP_WAITING];
+var SimpleEventPlugin = {
+  // simpleEventPluginEventTypes gets populated from
+  // the DOMEventProperties module.
+  eventTypes: simpleEventPluginEventTypes,
+  extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) {
+    var dispatchConfig = topLevelEventsToDispatchConfig.get(topLevelType);
+
+    if (!dispatchConfig) {
+      return null;
+    }
+
+    var EventConstructor;
+
+    switch (topLevelType) {
+      case TOP_KEY_PRESS:
+        // Firefox creates a keypress event for function keys too. This removes
+        // the unwanted keypress events. Enter is however both printable and
+        // non-printable. One would expect Tab to be as well (but it isn't).
+        if (getEventCharCode(nativeEvent) === 0) {
+          return null;
+        }
+
+      /* falls through */
+
+      case TOP_KEY_DOWN:
+      case TOP_KEY_UP:
+        EventConstructor = SyntheticKeyboardEvent;
+        break;
+
+      case TOP_BLUR:
+      case TOP_FOCUS:
+        EventConstructor = SyntheticFocusEvent;
+        break;
+
+      case TOP_CLICK:
+        // Firefox creates a click event on right mouse clicks. This removes the
+        // unwanted click events.
+        if (nativeEvent.button === 2) {
+          return null;
+        }
+
+      /* falls through */
+
+      case TOP_AUX_CLICK:
+      case TOP_DOUBLE_CLICK:
+      case TOP_MOUSE_DOWN:
+      case TOP_MOUSE_MOVE:
+      case TOP_MOUSE_UP: // TODO: Disabled elements should not respond to mouse events
+
+      /* falls through */
+
+      case TOP_MOUSE_OUT:
+      case TOP_MOUSE_OVER:
+      case TOP_CONTEXT_MENU:
+        EventConstructor = SyntheticMouseEvent;
+        break;
+
+      case TOP_DRAG:
+      case TOP_DRAG_END:
+      case TOP_DRAG_ENTER:
+      case TOP_DRAG_EXIT:
+      case TOP_DRAG_LEAVE:
+      case TOP_DRAG_OVER:
+      case TOP_DRAG_START:
+      case TOP_DROP:
+        EventConstructor = SyntheticDragEvent;
+        break;
+
+      case TOP_TOUCH_CANCEL:
+      case TOP_TOUCH_END:
+      case TOP_TOUCH_MOVE:
+      case TOP_TOUCH_START:
+        EventConstructor = SyntheticTouchEvent;
+        break;
+
+      case TOP_ANIMATION_END:
+      case TOP_ANIMATION_ITERATION:
+      case TOP_ANIMATION_START:
+        EventConstructor = SyntheticAnimationEvent;
+        break;
+
+      case TOP_TRANSITION_END:
+        EventConstructor = SyntheticTransitionEvent;
+        break;
+
+      case TOP_SCROLL:
+        EventConstructor = SyntheticUIEvent;
+        break;
+
+      case TOP_WHEEL:
+        EventConstructor = SyntheticWheelEvent;
+        break;
+
+      case TOP_COPY:
+      case TOP_CUT:
+      case TOP_PASTE:
+        EventConstructor = SyntheticClipboardEvent;
+        break;
+
+      case TOP_GOT_POINTER_CAPTURE:
+      case TOP_LOST_POINTER_CAPTURE:
+      case TOP_POINTER_CANCEL:
+      case TOP_POINTER_DOWN:
+      case TOP_POINTER_MOVE:
+      case TOP_POINTER_OUT:
+      case TOP_POINTER_OVER:
+      case TOP_POINTER_UP:
+        EventConstructor = SyntheticPointerEvent;
+        break;
+
+      default:
+        {
+          if (knownHTMLTopLevelTypes.indexOf(topLevelType) === -1) {
+            error('SimpleEventPlugin: Unhandled event type, `%s`. This warning ' + 'is likely caused by a bug in React. Please file an issue.', topLevelType);
+          }
+        } // HTML Events
+        // @see http://www.w3.org/TR/html5/index.html#events-0
+
+
+        EventConstructor = SyntheticEvent;
+        break;
+    }
+
+    var event = EventConstructor.getPooled(dispatchConfig, targetInst, nativeEvent, nativeEventTarget);
+    accumulateTwoPhaseDispatches(event);
+    return event;
+  }
+};
+
+/**
+ * Specifies a deterministic ordering of `EventPlugin`s. A convenient way to
+ * reason about plugins, without having to package every one of them. This
+ * is better than having plugins be ordered in the same order that they
+ * are injected because that ordering would be influenced by the packaging order.
+ * `ResponderEventPlugin` must occur before `SimpleEventPlugin` so that
+ * preventing default on events is convenient in `SimpleEventPlugin` handlers.
+ */
+
+var DOMEventPluginOrder = ['ResponderEventPlugin', 'SimpleEventPlugin', 'EnterLeaveEventPlugin', 'ChangeEventPlugin', 'SelectEventPlugin', 'BeforeInputEventPlugin'];
+/**
+ * Inject modules for resolving DOM hierarchy and plugin ordering.
+ */
+
+injectEventPluginOrder(DOMEventPluginOrder);
+setComponentTree(getFiberCurrentPropsFromNode$1, getInstanceFromNode$1, getNodeFromInstance$1);
+/**
+ * Some important event plugins included by default (without having to require
+ * them).
+ */
+
+injectEventPluginsByName({
+  SimpleEventPlugin: SimpleEventPlugin,
+  EnterLeaveEventPlugin: EnterLeaveEventPlugin,
+  ChangeEventPlugin: ChangeEventPlugin,
+  SelectEventPlugin: SelectEventPlugin,
+  BeforeInputEventPlugin: BeforeInputEventPlugin
+});
+
+// Prefix measurements so that it's possible to filter them.
+// Longer prefixes are hard to read in DevTools.
+var reactEmoji = "\u269B";
+var warningEmoji = "\u26D4";
+var supportsUserTiming = typeof performance !== 'undefined' && typeof performance.mark === 'function' && typeof performance.clearMarks === 'function' && typeof performance.measure === 'function' && typeof performance.clearMeasures === 'function'; // Keep track of current fiber so that we know the path to unwind on pause.
+// TODO: this looks the same as nextUnitOfWork in scheduler. Can we unify them?
+
+var currentFiber = null; // If we're in the middle of user code, which fiber and method is it?
+// Reusing `currentFiber` would be confusing for this because user code fiber
+// can change during commit phase too, but we don't need to unwind it (since
+// lifecycles in the commit phase don't resemble a tree).
+
+var currentPhase = null;
+var currentPhaseFiber = null; // Did lifecycle hook schedule an update? This is often a performance problem,
+// so we will keep track of it, and include it in the report.
+// Track commits caused by cascading updates.
+
+var isCommitting = false;
+var hasScheduledUpdateInCurrentCommit = false;
+var hasScheduledUpdateInCurrentPhase = false;
+var commitCountInCurrentWorkLoop = 0;
+var effectCountInCurrentCommit = 0;
+// to avoid stretch the commit phase with measurement overhead.
+
+var labelsInCurrentCommit = new Set();
+
+var formatMarkName = function (markName) {
+  return reactEmoji + " " + markName;
+};
+
+var formatLabel = function (label, warning) {
+  var prefix = warning ? warningEmoji + " " : reactEmoji + " ";
+  var suffix = warning ? " Warning: " + warning : '';
+  return "" + prefix + label + suffix;
+};
+
+var beginMark = function (markName) {
+  performance.mark(formatMarkName(markName));
+};
+
+var clearMark = function (markName) {
+  performance.clearMarks(formatMarkName(markName));
+};
+
+var endMark = function (label, markName, warning) {
+  var formattedMarkName = formatMarkName(markName);
+  var formattedLabel = formatLabel(label, warning);
+
+  try {
+    performance.measure(formattedLabel, formattedMarkName);
+  } catch (err) {} // If previous mark was missing for some reason, this will throw.
+  // This could only happen if React crashed in an unexpected place earlier.
+  // Don't pile on with more errors.
+  // Clear marks immediately to avoid growing buffer.
+
+
+  performance.clearMarks(formattedMarkName);
+  performance.clearMeasures(formattedLabel);
+};
+
+var getFiberMarkName = function (label, debugID) {
+  return label + " (#" + debugID + ")";
+};
+
+var getFiberLabel = function (componentName, isMounted, phase) {
+  if (phase === null) {
+    // These are composite component total time measurements.
+    return componentName + " [" + (isMounted ? 'update' : 'mount') + "]";
+  } else {
+    // Composite component methods.
+    return componentName + "." + phase;
+  }
+};
+
+var beginFiberMark = function (fiber, phase) {
+  var componentName = getComponentName(fiber.type) || 'Unknown';
+  var debugID = fiber._debugID;
+  var isMounted = fiber.alternate !== null;
+  var label = getFiberLabel(componentName, isMounted, phase);
+
+  if (isCommitting && labelsInCurrentCommit.has(label)) {
+    // During the commit phase, we don't show duplicate labels because
+    // there is a fixed overhead for every measurement, and we don't
+    // want to stretch the commit phase beyond necessary.
+    return false;
+  }
+
+  labelsInCurrentCommit.add(label);
+  var markName = getFiberMarkName(label, debugID);
+  beginMark(markName);
+  return true;
+};
+
+var clearFiberMark = function (fiber, phase) {
+  var componentName = getComponentName(fiber.type) || 'Unknown';
+  var debugID = fiber._debugID;
+  var isMounted = fiber.alternate !== null;
+  var label = getFiberLabel(componentName, isMounted, phase);
+  var markName = getFiberMarkName(label, debugID);
+  clearMark(markName);
+};
+
+var endFiberMark = function (fiber, phase, warning) {
+  var componentName = getComponentName(fiber.type) || 'Unknown';
+  var debugID = fiber._debugID;
+  var isMounted = fiber.alternate !== null;
+  var label = getFiberLabel(componentName, isMounted, phase);
+  var markName = getFiberMarkName(label, debugID);
+  endMark(label, markName, warning);
+};
+
+var shouldIgnoreFiber = function (fiber) {
+  // Host components should be skipped in the timeline.
+  // We could check typeof fiber.type, but does this work with RN?
+  switch (fiber.tag) {
+    case HostRoot:
+    case HostComponent:
+    case HostText:
+    case HostPortal:
+    case Fragment:
+    case ContextProvider:
+    case ContextConsumer:
+    case Mode:
+      return true;
+
+    default:
+      return false;
+  }
+};
+
+var clearPendingPhaseMeasurement = function () {
+  if (currentPhase !== null && currentPhaseFiber !== null) {
+    clearFiberMark(currentPhaseFiber, currentPhase);
+  }
+
+  currentPhaseFiber = null;
+  currentPhase = null;
+  hasScheduledUpdateInCurrentPhase = false;
+};
+
+var pauseTimers = function () {
+  // Stops all currently active measurements so that they can be resumed
+  // if we continue in a later deferred loop from the same unit of work.
+  var fiber = currentFiber;
+
+  while (fiber) {
+    if (fiber._debugIsCurrentlyTiming) {
+      endFiberMark(fiber, null, null);
+    }
+
+    fiber = fiber.return;
+  }
+};
+
+var resumeTimersRecursively = function (fiber) {
+  if (fiber.return !== null) {
+    resumeTimersRecursively(fiber.return);
+  }
+
+  if (fiber._debugIsCurrentlyTiming) {
+    beginFiberMark(fiber, null);
+  }
+};
+
+var resumeTimers = function () {
+  // Resumes all measurements that were active during the last deferred loop.
+  if (currentFiber !== null) {
+    resumeTimersRecursively(currentFiber);
+  }
+};
+
+function recordEffect() {
+  {
+    effectCountInCurrentCommit++;
+  }
+}
+function recordScheduleUpdate() {
+  {
+    if (isCommitting) {
+      hasScheduledUpdateInCurrentCommit = true;
+    }
+
+    if (currentPhase !== null && currentPhase !== 'componentWillMount' && currentPhase !== 'componentWillReceiveProps') {
+      hasScheduledUpdateInCurrentPhase = true;
+    }
+  }
+}
+function startWorkTimer(fiber) {
+  {
+    if (!supportsUserTiming || shouldIgnoreFiber(fiber)) {
+      return;
+    } // If we pause, this is the fiber to unwind from.
+
+
+    currentFiber = fiber;
+
+    if (!beginFiberMark(fiber, null)) {
+      return;
+    }
+
+    fiber._debugIsCurrentlyTiming = true;
+  }
+}
+function cancelWorkTimer(fiber) {
+  {
+    if (!supportsUserTiming || shouldIgnoreFiber(fiber)) {
+      return;
+    } // Remember we shouldn't complete measurement for this fiber.
+    // Otherwise flamechart will be deep even for small updates.
+
+
+    fiber._debugIsCurrentlyTiming = false;
+    clearFiberMark(fiber, null);
+  }
+}
+function stopWorkTimer(fiber) {
+  {
+    if (!supportsUserTiming || shouldIgnoreFiber(fiber)) {
+      return;
+    } // If we pause, its parent is the fiber to unwind from.
+
+
+    currentFiber = fiber.return;
+
+    if (!fiber._debugIsCurrentlyTiming) {
+      return;
+    }
+
+    fiber._debugIsCurrentlyTiming = false;
+    endFiberMark(fiber, null, null);
+  }
+}
+function stopFailedWorkTimer(fiber) {
+  {
+    if (!supportsUserTiming || shouldIgnoreFiber(fiber)) {
+      return;
+    } // If we pause, its parent is the fiber to unwind from.
+
+
+    currentFiber = fiber.return;
+
+    if (!fiber._debugIsCurrentlyTiming) {
+      return;
+    }
+
+    fiber._debugIsCurrentlyTiming = false;
+    var warning = fiber.tag === SuspenseComponent ? 'Rendering was suspended' : 'An error was thrown inside this error boundary';
+    endFiberMark(fiber, null, warning);
+  }
+}
+function startPhaseTimer(fiber, phase) {
+  {
+    if (!supportsUserTiming) {
+      return;
+    }
+
+    clearPendingPhaseMeasurement();
+
+    if (!beginFiberMark(fiber, phase)) {
+      return;
+    }
+
+    currentPhaseFiber = fiber;
+    currentPhase = phase;
+  }
+}
+function stopPhaseTimer() {
+  {
+    if (!supportsUserTiming) {
+      return;
+    }
+
+    if (currentPhase !== null && currentPhaseFiber !== null) {
+      var warning = hasScheduledUpdateInCurrentPhase ? 'Scheduled a cascading update' : null;
+      endFiberMark(currentPhaseFiber, currentPhase, warning);
+    }
+
+    currentPhase = null;
+    currentPhaseFiber = null;
+  }
+}
+function startWorkLoopTimer(nextUnitOfWork) {
+  {
+    currentFiber = nextUnitOfWork;
+
+    if (!supportsUserTiming) {
+      return;
+    }
+
+    commitCountInCurrentWorkLoop = 0; // This is top level call.
+    // Any other measurements are performed within.
+
+    beginMark('(React Tree Reconciliation)'); // Resume any measurements that were in progress during the last loop.
+
+    resumeTimers();
+  }
+}
+function stopWorkLoopTimer(interruptedBy, didCompleteRoot) {
+  {
+    if (!supportsUserTiming) {
+      return;
+    }
+
+    var warning = null;
+
+    if (interruptedBy !== null) {
+      if (interruptedBy.tag === HostRoot) {
+        warning = 'A top-level update interrupted the previous render';
+      } else {
+        var componentName = getComponentName(interruptedBy.type) || 'Unknown';
+        warning = "An update to " + componentName + " interrupted the previous render";
+      }
+    } else if (commitCountInCurrentWorkLoop > 1) {
+      warning = 'There were cascading updates';
+    }
+
+    commitCountInCurrentWorkLoop = 0;
+    var label = didCompleteRoot ? '(React Tree Reconciliation: Completed Root)' : '(React Tree Reconciliation: Yielded)'; // Pause any measurements until the next loop.
+
+    pauseTimers();
+    endMark(label, '(React Tree Reconciliation)', warning);
+  }
+}
+function startCommitTimer() {
+  {
+    if (!supportsUserTiming) {
+      return;
+    }
+
+    isCommitting = true;
+    hasScheduledUpdateInCurrentCommit = false;
+    labelsInCurrentCommit.clear();
+    beginMark('(Committing Changes)');
+  }
+}
+function stopCommitTimer() {
+  {
+    if (!supportsUserTiming) {
+      return;
+    }
+
+    var warning = null;
+
+    if (hasScheduledUpdateInCurrentCommit) {
+      warning = 'Lifecycle hook scheduled a cascading update';
+    } else if (commitCountInCurrentWorkLoop > 0) {
+      warning = 'Caused by a cascading update in earlier commit';
+    }
+
+    hasScheduledUpdateInCurrentCommit = false;
+    commitCountInCurrentWorkLoop++;
+    isCommitting = false;
+    labelsInCurrentCommit.clear();
+    endMark('(Committing Changes)', '(Committing Changes)', warning);
+  }
+}
+function startCommitSnapshotEffectsTimer() {
+  {
+    if (!supportsUserTiming) {
+      return;
+    }
+
+    effectCountInCurrentCommit = 0;
+    beginMark('(Committing Snapshot Effects)');
+  }
+}
+function stopCommitSnapshotEffectsTimer() {
+  {
+    if (!supportsUserTiming) {
+      return;
+    }
+
+    var count = effectCountInCurrentCommit;
+    effectCountInCurrentCommit = 0;
+    endMark("(Committing Snapshot Effects: " + count + " Total)", '(Committing Snapshot Effects)', null);
+  }
+}
+function startCommitHostEffectsTimer() {
+  {
+    if (!supportsUserTiming) {
+      return;
+    }
+
+    effectCountInCurrentCommit = 0;
+    beginMark('(Committing Host Effects)');
+  }
+}
+function stopCommitHostEffectsTimer() {
+  {
+    if (!supportsUserTiming) {
+      return;
+    }
+
+    var count = effectCountInCurrentCommit;
+    effectCountInCurrentCommit = 0;
+    endMark("(Committing Host Effects: " + count + " Total)", '(Committing Host Effects)', null);
+  }
+}
+function startCommitLifeCyclesTimer() {
+  {
+    if (!supportsUserTiming) {
+      return;
+    }
+
+    effectCountInCurrentCommit = 0;
+    beginMark('(Calling Lifecycle Methods)');
+  }
+}
+function stopCommitLifeCyclesTimer() {
+  {
+    if (!supportsUserTiming) {
+      return;
+    }
+
+    var count = effectCountInCurrentCommit;
+    effectCountInCurrentCommit = 0;
+    endMark("(Calling Lifecycle Methods: " + count + " Total)", '(Calling Lifecycle Methods)', null);
+  }
+}
+
+var valueStack = [];
+var fiberStack;
+
+{
+  fiberStack = [];
+}
+
+var index = -1;
+
+function createCursor(defaultValue) {
+  return {
+    current: defaultValue
+  };
+}
+
+function pop(cursor, fiber) {
+  if (index < 0) {
+    {
+      error('Unexpected pop.');
+    }
+
+    return;
+  }
+
+  {
+    if (fiber !== fiberStack[index]) {
+      error('Unexpected Fiber popped.');
+    }
+  }
+
+  cursor.current = valueStack[index];
+  valueStack[index] = null;
+
+  {
+    fiberStack[index] = null;
+  }
+
+  index--;
+}
+
+function push(cursor, value, fiber) {
+  index++;
+  valueStack[index] = cursor.current;
+
+  {
+    fiberStack[index] = fiber;
+  }
+
+  cursor.current = value;
+}
+
+var warnedAboutMissingGetChildContext;
+
+{
+  warnedAboutMissingGetChildContext = {};
+}
+
+var emptyContextObject = {};
+
+{
+  Object.freeze(emptyContextObject);
+} // A cursor to the current merged context object on the stack.
+
+
+var contextStackCursor = createCursor(emptyContextObject); // A cursor to a boolean indicating whether the context has changed.
+
+var didPerformWorkStackCursor = createCursor(false); // Keep track of the previous context object that was on the stack.
+// We use this to get access to the parent context after we have already
+// pushed the next context provider, and now need to merge their contexts.
+
+var previousContext = emptyContextObject;
+
+function getUnmaskedContext(workInProgress, Component, didPushOwnContextIfProvider) {
+  {
+    if (didPushOwnContextIfProvider && isContextProvider(Component)) {
+      // If the fiber is a context provider itself, when we read its context
+      // we may have already pushed its own child context on the stack. A context
+      // provider should not "see" its own child context. Therefore we read the
+      // previous (parent) context instead for a context provider.
+      return previousContext;
+    }
+
+    return contextStackCursor.current;
+  }
+}
+
+function cacheContext(workInProgress, unmaskedContext, maskedContext) {
+  {
+    var instance = workInProgress.stateNode;
+    instance.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext;
+    instance.__reactInternalMemoizedMaskedChildContext = maskedContext;
+  }
+}
+
+function getMaskedContext(workInProgress, unmaskedContext) {
+  {
+    var type = workInProgress.type;
+    var contextTypes = type.contextTypes;
+
+    if (!contextTypes) {
+      return emptyContextObject;
+    } // Avoid recreating masked context unless unmasked context has changed.
+    // Failing to do this will result in unnecessary calls to componentWillReceiveProps.
+    // This may trigger infinite loops if componentWillReceiveProps calls setState.
+
+
+    var instance = workInProgress.stateNode;
+
+    if (instance && instance.__reactInternalMemoizedUnmaskedChildContext === unmaskedContext) {
+      return instance.__reactInternalMemoizedMaskedChildContext;
+    }
+
+    var context = {};
+
+    for (var key in contextTypes) {
+      context[key] = unmaskedContext[key];
+    }
+
+    {
+      var name = getComponentName(type) || 'Unknown';
+      checkPropTypes(contextTypes, context, 'context', name, getCurrentFiberStackInDev);
+    } // Cache unmasked context so we can avoid recreating masked context unless necessary.
+    // Context is created before the class component is instantiated so check for instance.
+
+
+    if (instance) {
+      cacheContext(workInProgress, unmaskedContext, context);
+    }
+
+    return context;
+  }
+}
+
+function hasContextChanged() {
+  {
+    return didPerformWorkStackCursor.current;
+  }
+}
+
+function isContextProvider(type) {
+  {
+    var childContextTypes = type.childContextTypes;
+    return childContextTypes !== null && childContextTypes !== undefined;
+  }
+}
+
+function popContext(fiber) {
+  {
+    pop(didPerformWorkStackCursor, fiber);
+    pop(contextStackCursor, fiber);
+  }
+}
+
+function popTopLevelContextObject(fiber) {
+  {
+    pop(didPerformWorkStackCursor, fiber);
+    pop(contextStackCursor, fiber);
+  }
+}
+
+function pushTopLevelContextObject(fiber, context, didChange) {
+  {
+    if (!(contextStackCursor.current === emptyContextObject)) {
+      {
+        throw Error( "Unexpected context found on stack. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+
+    push(contextStackCursor, context, fiber);
+    push(didPerformWorkStackCursor, didChange, fiber);
+  }
+}
+
+function processChildContext(fiber, type, parentContext) {
+  {
+    var instance = fiber.stateNode;
+    var childContextTypes = type.childContextTypes; // TODO (bvaughn) Replace this behavior with an invariant() in the future.
+    // It has only been added in Fiber to match the (unintentional) behavior in Stack.
+
+    if (typeof instance.getChildContext !== 'function') {
+      {
+        var componentName = getComponentName(type) || 'Unknown';
+
+        if (!warnedAboutMissingGetChildContext[componentName]) {
+          warnedAboutMissingGetChildContext[componentName] = true;
+
+          error('%s.childContextTypes is specified but there is no getChildContext() method ' + 'on the instance. You can either define getChildContext() on %s or remove ' + 'childContextTypes from it.', componentName, componentName);
+        }
+      }
+
+      return parentContext;
+    }
+
+    var childContext;
+    startPhaseTimer(fiber, 'getChildContext');
+    childContext = instance.getChildContext();
+    stopPhaseTimer();
+
+    for (var contextKey in childContext) {
+      if (!(contextKey in childContextTypes)) {
+        {
+          throw Error( (getComponentName(type) || 'Unknown') + ".getChildContext(): key \"" + contextKey + "\" is not defined in childContextTypes." );
+        }
+      }
+    }
+
+    {
+      var name = getComponentName(type) || 'Unknown';
+      checkPropTypes(childContextTypes, childContext, 'child context', name, // In practice, there is one case in which we won't get a stack. It's when
+      // somebody calls unstable_renderSubtreeIntoContainer() and we process
+      // context from the parent component instance. The stack will be missing
+      // because it's outside of the reconciliation, and so the pointer has not
+      // been set. This is rare and doesn't matter. We'll also remove that API.
+      getCurrentFiberStackInDev);
+    }
+
+    return _assign({}, parentContext, {}, childContext);
+  }
+}
+
+function pushContextProvider(workInProgress) {
+  {
+    var instance = workInProgress.stateNode; // We push the context as early as possible to ensure stack integrity.
+    // If the instance does not exist yet, we will push null at first,
+    // and replace it on the stack later when invalidating the context.
+
+    var memoizedMergedChildContext = instance && instance.__reactInternalMemoizedMergedChildContext || emptyContextObject; // Remember the parent context so we can merge with it later.
+    // Inherit the parent's did-perform-work value to avoid inadvertently blocking updates.
+
+    previousContext = contextStackCursor.current;
+    push(contextStackCursor, memoizedMergedChildContext, workInProgress);
+    push(didPerformWorkStackCursor, didPerformWorkStackCursor.current, workInProgress);
+    return true;
+  }
+}
+
+function invalidateContextProvider(workInProgress, type, didChange) {
+  {
+    var instance = workInProgress.stateNode;
+
+    if (!instance) {
+      {
+        throw Error( "Expected to have an instance by this point. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+
+    if (didChange) {
+      // Merge parent and own context.
+      // Skip this if we're not updating due to sCU.
+      // This avoids unnecessarily recomputing memoized values.
+      var mergedContext = processChildContext(workInProgress, type, previousContext);
+      instance.__reactInternalMemoizedMergedChildContext = mergedContext; // Replace the old (or empty) context with the new one.
+      // It is important to unwind the context in the reverse order.
+
+      pop(didPerformWorkStackCursor, workInProgress);
+      pop(contextStackCursor, workInProgress); // Now push the new context and mark that it has changed.
+
+      push(contextStackCursor, mergedContext, workInProgress);
+      push(didPerformWorkStackCursor, didChange, workInProgress);
+    } else {
+      pop(didPerformWorkStackCursor, workInProgress);
+      push(didPerformWorkStackCursor, didChange, workInProgress);
+    }
+  }
+}
+
+function findCurrentUnmaskedContext(fiber) {
+  {
+    // Currently this is only used with renderSubtreeIntoContainer; not sure if it
+    // makes sense elsewhere
+    if (!(isFiberMounted(fiber) && fiber.tag === ClassComponent)) {
+      {
+        throw Error( "Expected subtree parent to be a mounted class component. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+
+    var node = fiber;
+
+    do {
+      switch (node.tag) {
+        case HostRoot:
+          return node.stateNode.context;
+
+        case ClassComponent:
+          {
+            var Component = node.type;
+
+            if (isContextProvider(Component)) {
+              return node.stateNode.__reactInternalMemoizedMergedChildContext;
+            }
+
+            break;
+          }
+      }
+
+      node = node.return;
+    } while (node !== null);
+
+    {
+      {
+        throw Error( "Found unexpected detached subtree parent. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+  }
+}
+
+var LegacyRoot = 0;
+var BlockingRoot = 1;
+var ConcurrentRoot = 2;
+
+var Scheduler_runWithPriority = Scheduler.unstable_runWithPriority,
+    Scheduler_scheduleCallback = Scheduler.unstable_scheduleCallback,
+    Scheduler_cancelCallback = Scheduler.unstable_cancelCallback,
+    Scheduler_shouldYield = Scheduler.unstable_shouldYield,
+    Scheduler_requestPaint = Scheduler.unstable_requestPaint,
+    Scheduler_now = Scheduler.unstable_now,
+    Scheduler_getCurrentPriorityLevel = Scheduler.unstable_getCurrentPriorityLevel,
+    Scheduler_ImmediatePriority = Scheduler.unstable_ImmediatePriority,
+    Scheduler_UserBlockingPriority = Scheduler.unstable_UserBlockingPriority,
+    Scheduler_NormalPriority = Scheduler.unstable_NormalPriority,
+    Scheduler_LowPriority = Scheduler.unstable_LowPriority,
+    Scheduler_IdlePriority = Scheduler.unstable_IdlePriority;
+
+{
+  // Provide explicit error message when production+profiling bundle of e.g.
+  // react-dom is used with production (non-profiling) bundle of
+  // scheduler/tracing
+  if (!(tracing.__interactionsRef != null && tracing.__interactionsRef.current != null)) {
+    {
+      throw Error( "It is not supported to run the profiling version of a renderer (for example, `react-dom/profiling`) without also replacing the `scheduler/tracing` module with `scheduler/tracing-profiling`. Your bundler might have a setting for aliasing both modules. Learn more at http://fb.me/react-profiling" );
+    }
+  }
+}
+
+var fakeCallbackNode = {}; // Except for NoPriority, these correspond to Scheduler priorities. We use
+// ascending numbers so we can compare them like numbers. They start at 90 to
+// avoid clashing with Scheduler's priorities.
+
+var ImmediatePriority = 99;
+var UserBlockingPriority$1 = 98;
+var NormalPriority = 97;
+var LowPriority = 96;
+var IdlePriority = 95; // NoPriority is the absence of priority. Also React-only.
+
+var NoPriority = 90;
+var shouldYield = Scheduler_shouldYield;
+var requestPaint = // Fall back gracefully if we're running an older version of Scheduler.
+Scheduler_requestPaint !== undefined ? Scheduler_requestPaint : function () {};
+var syncQueue = null;
+var immediateQueueCallbackNode = null;
+var isFlushingSyncQueue = false;
+var initialTimeMs = Scheduler_now(); // If the initial timestamp is reasonably small, use Scheduler's `now` directly.
+// This will be the case for modern browsers that support `performance.now`. In
+// older browsers, Scheduler falls back to `Date.now`, which returns a Unix
+// timestamp. In that case, subtract the module initialization time to simulate
+// the behavior of performance.now and keep our times small enough to fit
+// within 32 bits.
+// TODO: Consider lifting this into Scheduler.
+
+var now = initialTimeMs < 10000 ? Scheduler_now : function () {
+  return Scheduler_now() - initialTimeMs;
+};
+function getCurrentPriorityLevel() {
+  switch (Scheduler_getCurrentPriorityLevel()) {
+    case Scheduler_ImmediatePriority:
+      return ImmediatePriority;
+
+    case Scheduler_UserBlockingPriority:
+      return UserBlockingPriority$1;
+
+    case Scheduler_NormalPriority:
+      return NormalPriority;
+
+    case Scheduler_LowPriority:
+      return LowPriority;
+
+    case Scheduler_IdlePriority:
+      return IdlePriority;
+
+    default:
+      {
+        {
+          throw Error( "Unknown priority level." );
+        }
+      }
+
+  }
+}
+
+function reactPriorityToSchedulerPriority(reactPriorityLevel) {
+  switch (reactPriorityLevel) {
+    case ImmediatePriority:
+      return Scheduler_ImmediatePriority;
+
+    case UserBlockingPriority$1:
+      return Scheduler_UserBlockingPriority;
+
+    case NormalPriority:
+      return Scheduler_NormalPriority;
+
+    case LowPriority:
+      return Scheduler_LowPriority;
+
+    case IdlePriority:
+      return Scheduler_IdlePriority;
+
+    default:
+      {
+        {
+          throw Error( "Unknown priority level." );
+        }
+      }
+
+  }
+}
+
+function runWithPriority$1(reactPriorityLevel, fn) {
+  var priorityLevel = reactPriorityToSchedulerPriority(reactPriorityLevel);
+  return Scheduler_runWithPriority(priorityLevel, fn);
+}
+function scheduleCallback(reactPriorityLevel, callback, options) {
+  var priorityLevel = reactPriorityToSchedulerPriority(reactPriorityLevel);
+  return Scheduler_scheduleCallback(priorityLevel, callback, options);
+}
+function scheduleSyncCallback(callback) {
+  // Push this callback into an internal queue. We'll flush these either in
+  // the next tick, or earlier if something calls `flushSyncCallbackQueue`.
+  if (syncQueue === null) {
+    syncQueue = [callback]; // Flush the queue in the next tick, at the earliest.
+
+    immediateQueueCallbackNode = Scheduler_scheduleCallback(Scheduler_ImmediatePriority, flushSyncCallbackQueueImpl);
+  } else {
+    // Push onto existing queue. Don't need to schedule a callback because
+    // we already scheduled one when we created the queue.
+    syncQueue.push(callback);
+  }
+
+  return fakeCallbackNode;
+}
+function cancelCallback(callbackNode) {
+  if (callbackNode !== fakeCallbackNode) {
+    Scheduler_cancelCallback(callbackNode);
+  }
+}
+function flushSyncCallbackQueue() {
+  if (immediateQueueCallbackNode !== null) {
+    var node = immediateQueueCallbackNode;
+    immediateQueueCallbackNode = null;
+    Scheduler_cancelCallback(node);
+  }
+
+  flushSyncCallbackQueueImpl();
+}
+
+function flushSyncCallbackQueueImpl() {
+  if (!isFlushingSyncQueue && syncQueue !== null) {
+    // Prevent re-entrancy.
+    isFlushingSyncQueue = true;
+    var i = 0;
+
+    try {
+      var _isSync = true;
+      var queue = syncQueue;
+      runWithPriority$1(ImmediatePriority, function () {
+        for (; i < queue.length; i++) {
+          var callback = queue[i];
+
+          do {
+            callback = callback(_isSync);
+          } while (callback !== null);
+        }
+      });
+      syncQueue = null;
+    } catch (error) {
+      // If something throws, leave the remaining callbacks on the queue.
+      if (syncQueue !== null) {
+        syncQueue = syncQueue.slice(i + 1);
+      } // Resume flushing in the next tick
+
+
+      Scheduler_scheduleCallback(Scheduler_ImmediatePriority, flushSyncCallbackQueue);
+      throw error;
+    } finally {
+      isFlushingSyncQueue = false;
+    }
+  }
+}
+
+var NoMode = 0;
+var StrictMode = 1; // TODO: Remove BlockingMode and ConcurrentMode by reading from the root
+// tag instead
+
+var BlockingMode = 2;
+var ConcurrentMode = 4;
+var ProfileMode = 8;
+
+// Max 31 bit integer. The max integer size in V8 for 32-bit systems.
+// Math.pow(2, 30) - 1
+// 0b111111111111111111111111111111
+var MAX_SIGNED_31_BIT_INT = 1073741823;
+
+var NoWork = 0; // TODO: Think of a better name for Never. The key difference with Idle is that
+// Never work can be committed in an inconsistent state without tearing the UI.
+// The main example is offscreen content, like a hidden subtree. So one possible
+// name is Offscreen. However, it also includes dehydrated Suspense boundaries,
+// which are inconsistent in the sense that they haven't finished yet, but
+// aren't visibly inconsistent because the server rendered HTML matches what the
+// hydrated tree would look like.
+
+var Never = 1; // Idle is slightly higher priority than Never. It must completely finish in
+// order to be consistent.
+
+var Idle = 2; // Continuous Hydration is slightly higher than Idle and is used to increase
+// priority of hover targets.
+
+var ContinuousHydration = 3;
+var Sync = MAX_SIGNED_31_BIT_INT;
+var Batched = Sync - 1;
+var UNIT_SIZE = 10;
+var MAGIC_NUMBER_OFFSET = Batched - 1; // 1 unit of expiration time represents 10ms.
+
+function msToExpirationTime(ms) {
+  // Always subtract from the offset so that we don't clash with the magic number for NoWork.
+  return MAGIC_NUMBER_OFFSET - (ms / UNIT_SIZE | 0);
+}
+function expirationTimeToMs(expirationTime) {
+  return (MAGIC_NUMBER_OFFSET - expirationTime) * UNIT_SIZE;
+}
+
+function ceiling(num, precision) {
+  return ((num / precision | 0) + 1) * precision;
+}
+
+function computeExpirationBucket(currentTime, expirationInMs, bucketSizeMs) {
+  return MAGIC_NUMBER_OFFSET - ceiling(MAGIC_NUMBER_OFFSET - currentTime + expirationInMs / UNIT_SIZE, bucketSizeMs / UNIT_SIZE);
+} // TODO: This corresponds to Scheduler's NormalPriority, not LowPriority. Update
+// the names to reflect.
+
+
+var LOW_PRIORITY_EXPIRATION = 5000;
+var LOW_PRIORITY_BATCH_SIZE = 250;
+function computeAsyncExpiration(currentTime) {
+  return computeExpirationBucket(currentTime, LOW_PRIORITY_EXPIRATION, LOW_PRIORITY_BATCH_SIZE);
+}
+function computeSuspenseExpiration(currentTime, timeoutMs) {
+  // TODO: Should we warn if timeoutMs is lower than the normal pri expiration time?
+  return computeExpirationBucket(currentTime, timeoutMs, LOW_PRIORITY_BATCH_SIZE);
+} // We intentionally set a higher expiration time for interactive updates in
+// dev than in production.
+//
+// If the main thread is being blocked so long that you hit the expiration,
+// it's a problem that could be solved with better scheduling.
+//
+// People will be more likely to notice this and fix it with the long
+// expiration time in development.
+//
+// In production we opt for better UX at the risk of masking scheduling
+// problems, by expiring fast.
+
+var HIGH_PRIORITY_EXPIRATION =  500 ;
+var HIGH_PRIORITY_BATCH_SIZE = 100;
+function computeInteractiveExpiration(currentTime) {
+  return computeExpirationBucket(currentTime, HIGH_PRIORITY_EXPIRATION, HIGH_PRIORITY_BATCH_SIZE);
+}
+function inferPriorityFromExpirationTime(currentTime, expirationTime) {
+  if (expirationTime === Sync) {
+    return ImmediatePriority;
+  }
+
+  if (expirationTime === Never || expirationTime === Idle) {
+    return IdlePriority;
+  }
+
+  var msUntil = expirationTimeToMs(expirationTime) - expirationTimeToMs(currentTime);
+
+  if (msUntil <= 0) {
+    return ImmediatePriority;
+  }
+
+  if (msUntil <= HIGH_PRIORITY_EXPIRATION + HIGH_PRIORITY_BATCH_SIZE) {
+    return UserBlockingPriority$1;
+  }
+
+  if (msUntil <= LOW_PRIORITY_EXPIRATION + LOW_PRIORITY_BATCH_SIZE) {
+    return NormalPriority;
+  } // TODO: Handle LowPriority
+  // Assume anything lower has idle priority
+
+
+  return IdlePriority;
+}
+
+var ReactStrictModeWarnings = {
+  recordUnsafeLifecycleWarnings: function (fiber, instance) {},
+  flushPendingUnsafeLifecycleWarnings: function () {},
+  recordLegacyContextWarning: function (fiber, instance) {},
+  flushLegacyContextWarning: function () {},
+  discardPendingWarnings: function () {}
+};
+
+{
+  var findStrictRoot = function (fiber) {
+    var maybeStrictRoot = null;
+    var node = fiber;
+
+    while (node !== null) {
+      if (node.mode & StrictMode) {
+        maybeStrictRoot = node;
+      }
+
+      node = node.return;
+    }
+
+    return maybeStrictRoot;
+  };
+
+  var setToSortedString = function (set) {
+    var array = [];
+    set.forEach(function (value) {
+      array.push(value);
+    });
+    return array.sort().join(', ');
+  };
+
+  var pendingComponentWillMountWarnings = [];
+  var pendingUNSAFE_ComponentWillMountWarnings = [];
+  var pendingComponentWillReceivePropsWarnings = [];
+  var pendingUNSAFE_ComponentWillReceivePropsWarnings = [];
+  var pendingComponentWillUpdateWarnings = [];
+  var pendingUNSAFE_ComponentWillUpdateWarnings = []; // Tracks components we have already warned about.
+
+  var didWarnAboutUnsafeLifecycles = new Set();
+
+  ReactStrictModeWarnings.recordUnsafeLifecycleWarnings = function (fiber, instance) {
+    // Dedup strategy: Warn once per component.
+    if (didWarnAboutUnsafeLifecycles.has(fiber.type)) {
+      return;
+    }
+
+    if (typeof instance.componentWillMount === 'function' && // Don't warn about react-lifecycles-compat polyfilled components.
+    instance.componentWillMount.__suppressDeprecationWarning !== true) {
+      pendingComponentWillMountWarnings.push(fiber);
+    }
+
+    if (fiber.mode & StrictMode && typeof instance.UNSAFE_componentWillMount === 'function') {
+      pendingUNSAFE_ComponentWillMountWarnings.push(fiber);
+    }
+
+    if (typeof instance.componentWillReceiveProps === 'function' && instance.componentWillReceiveProps.__suppressDeprecationWarning !== true) {
+      pendingComponentWillReceivePropsWarnings.push(fiber);
+    }
+
+    if (fiber.mode & StrictMode && typeof instance.UNSAFE_componentWillReceiveProps === 'function') {
+      pendingUNSAFE_ComponentWillReceivePropsWarnings.push(fiber);
+    }
+
+    if (typeof instance.componentWillUpdate === 'function' && instance.componentWillUpdate.__suppressDeprecationWarning !== true) {
+      pendingComponentWillUpdateWarnings.push(fiber);
+    }
+
+    if (fiber.mode & StrictMode && typeof instance.UNSAFE_componentWillUpdate === 'function') {
+      pendingUNSAFE_ComponentWillUpdateWarnings.push(fiber);
+    }
+  };
+
+  ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings = function () {
+    // We do an initial pass to gather component names
+    var componentWillMountUniqueNames = new Set();
+
+    if (pendingComponentWillMountWarnings.length > 0) {
+      pendingComponentWillMountWarnings.forEach(function (fiber) {
+        componentWillMountUniqueNames.add(getComponentName(fiber.type) || 'Component');
+        didWarnAboutUnsafeLifecycles.add(fiber.type);
+      });
+      pendingComponentWillMountWarnings = [];
+    }
+
+    var UNSAFE_componentWillMountUniqueNames = new Set();
+
+    if (pendingUNSAFE_ComponentWillMountWarnings.length > 0) {
+      pendingUNSAFE_ComponentWillMountWarnings.forEach(function (fiber) {
+        UNSAFE_componentWillMountUniqueNames.add(getComponentName(fiber.type) || 'Component');
+        didWarnAboutUnsafeLifecycles.add(fiber.type);
+      });
+      pendingUNSAFE_ComponentWillMountWarnings = [];
+    }
+
+    var componentWillReceivePropsUniqueNames = new Set();
+
+    if (pendingComponentWillReceivePropsWarnings.length > 0) {
+      pendingComponentWillReceivePropsWarnings.forEach(function (fiber) {
+        componentWillReceivePropsUniqueNames.add(getComponentName(fiber.type) || 'Component');
+        didWarnAboutUnsafeLifecycles.add(fiber.type);
+      });
+      pendingComponentWillReceivePropsWarnings = [];
+    }
+
+    var UNSAFE_componentWillReceivePropsUniqueNames = new Set();
+
+    if (pendingUNSAFE_ComponentWillReceivePropsWarnings.length > 0) {
+      pendingUNSAFE_ComponentWillReceivePropsWarnings.forEach(function (fiber) {
+        UNSAFE_componentWillReceivePropsUniqueNames.add(getComponentName(fiber.type) || 'Component');
+        didWarnAboutUnsafeLifecycles.add(fiber.type);
+      });
+      pendingUNSAFE_ComponentWillReceivePropsWarnings = [];
+    }
+
+    var componentWillUpdateUniqueNames = new Set();
+
+    if (pendingComponentWillUpdateWarnings.length > 0) {
+      pendingComponentWillUpdateWarnings.forEach(function (fiber) {
+        componentWillUpdateUniqueNames.add(getComponentName(fiber.type) || 'Component');
+        didWarnAboutUnsafeLifecycles.add(fiber.type);
+      });
+      pendingComponentWillUpdateWarnings = [];
+    }
+
+    var UNSAFE_componentWillUpdateUniqueNames = new Set();
+
+    if (pendingUNSAFE_ComponentWillUpdateWarnings.length > 0) {
+      pendingUNSAFE_ComponentWillUpdateWarnings.forEach(function (fiber) {
+        UNSAFE_componentWillUpdateUniqueNames.add(getComponentName(fiber.type) || 'Component');
+        didWarnAboutUnsafeLifecycles.add(fiber.type);
+      });
+      pendingUNSAFE_ComponentWillUpdateWarnings = [];
+    } // Finally, we flush all the warnings
+    // UNSAFE_ ones before the deprecated ones, since they'll be 'louder'
+
+
+    if (UNSAFE_componentWillMountUniqueNames.size > 0) {
+      var sortedNames = setToSortedString(UNSAFE_componentWillMountUniqueNames);
+
+      error('Using UNSAFE_componentWillMount in strict mode is not recommended and may indicate bugs in your code. ' + 'See https://fb.me/react-unsafe-component-lifecycles for details.\n\n' + '* Move code with side effects to componentDidMount, and set initial state in the constructor.\n' + '\nPlease update the following components: %s', sortedNames);
+    }
+
+    if (UNSAFE_componentWillReceivePropsUniqueNames.size > 0) {
+      var _sortedNames = setToSortedString(UNSAFE_componentWillReceivePropsUniqueNames);
+
+      error('Using UNSAFE_componentWillReceiveProps in strict mode is not recommended ' + 'and may indicate bugs in your code. ' + 'See https://fb.me/react-unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + "* If you're updating state whenever props change, " + 'refactor your code to use memoization techniques or move it to ' + 'static getDerivedStateFromProps. Learn more at: https://fb.me/react-derived-state\n' + '\nPlease update the following components: %s', _sortedNames);
+    }
+
+    if (UNSAFE_componentWillUpdateUniqueNames.size > 0) {
+      var _sortedNames2 = setToSortedString(UNSAFE_componentWillUpdateUniqueNames);
+
+      error('Using UNSAFE_componentWillUpdate in strict mode is not recommended ' + 'and may indicate bugs in your code. ' + 'See https://fb.me/react-unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + '\nPlease update the following components: %s', _sortedNames2);
+    }
+
+    if (componentWillMountUniqueNames.size > 0) {
+      var _sortedNames3 = setToSortedString(componentWillMountUniqueNames);
+
+      warn('componentWillMount has been renamed, and is not recommended for use. ' + 'See https://fb.me/react-unsafe-component-lifecycles for details.\n\n' + '* Move code with side effects to componentDidMount, and set initial state in the constructor.\n' + '* Rename componentWillMount to UNSAFE_componentWillMount to suppress ' + 'this warning in non-strict mode. In React 17.x, only the UNSAFE_ name will work. ' + 'To rename all deprecated lifecycles to their new names, you can run ' + '`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n' + '\nPlease update the following components: %s', _sortedNames3);
+    }
+
+    if (componentWillReceivePropsUniqueNames.size > 0) {
+      var _sortedNames4 = setToSortedString(componentWillReceivePropsUniqueNames);
+
+      warn('componentWillReceiveProps has been renamed, and is not recommended for use. ' + 'See https://fb.me/react-unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + "* If you're updating state whenever props change, refactor your " + 'code to use memoization techniques or move it to ' + 'static getDerivedStateFromProps. Learn more at: https://fb.me/react-derived-state\n' + '* Rename componentWillReceiveProps to UNSAFE_componentWillReceiveProps to suppress ' + 'this warning in non-strict mode. In React 17.x, only the UNSAFE_ name will work. ' + 'To rename all deprecated lifecycles to their new names, you can run ' + '`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n' + '\nPlease update the following components: %s', _sortedNames4);
+    }
+
+    if (componentWillUpdateUniqueNames.size > 0) {
+      var _sortedNames5 = setToSortedString(componentWillUpdateUniqueNames);
+
+      warn('componentWillUpdate has been renamed, and is not recommended for use. ' + 'See https://fb.me/react-unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + '* Rename componentWillUpdate to UNSAFE_componentWillUpdate to suppress ' + 'this warning in non-strict mode. In React 17.x, only the UNSAFE_ name will work. ' + 'To rename all deprecated lifecycles to their new names, you can run ' + '`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n' + '\nPlease update the following components: %s', _sortedNames5);
+    }
+  };
+
+  var pendingLegacyContextWarning = new Map(); // Tracks components we have already warned about.
+
+  var didWarnAboutLegacyContext = new Set();
+
+  ReactStrictModeWarnings.recordLegacyContextWarning = function (fiber, instance) {
+    var strictRoot = findStrictRoot(fiber);
+
+    if (strictRoot === null) {
+      error('Expected to find a StrictMode component in a strict mode tree. ' + 'This error is likely caused by a bug in React. Please file an issue.');
+
+      return;
+    } // Dedup strategy: Warn once per component.
+
+
+    if (didWarnAboutLegacyContext.has(fiber.type)) {
+      return;
+    }
+
+    var warningsForRoot = pendingLegacyContextWarning.get(strictRoot);
+
+    if (fiber.type.contextTypes != null || fiber.type.childContextTypes != null || instance !== null && typeof instance.getChildContext === 'function') {
+      if (warningsForRoot === undefined) {
+        warningsForRoot = [];
+        pendingLegacyContextWarning.set(strictRoot, warningsForRoot);
+      }
+
+      warningsForRoot.push(fiber);
+    }
+  };
+
+  ReactStrictModeWarnings.flushLegacyContextWarning = function () {
+    pendingLegacyContextWarning.forEach(function (fiberArray, strictRoot) {
+      if (fiberArray.length === 0) {
+        return;
+      }
+
+      var firstFiber = fiberArray[0];
+      var uniqueNames = new Set();
+      fiberArray.forEach(function (fiber) {
+        uniqueNames.add(getComponentName(fiber.type) || 'Component');
+        didWarnAboutLegacyContext.add(fiber.type);
+      });
+      var sortedNames = setToSortedString(uniqueNames);
+      var firstComponentStack = getStackByFiberInDevAndProd(firstFiber);
+
+      error('Legacy context API has been detected within a strict-mode tree.' + '\n\nThe old API will be supported in all 16.x releases, but applications ' + 'using it should migrate to the new version.' + '\n\nPlease update the following components: %s' + '\n\nLearn more about this warning here: https://fb.me/react-legacy-context' + '%s', sortedNames, firstComponentStack);
+    });
+  };
+
+  ReactStrictModeWarnings.discardPendingWarnings = function () {
+    pendingComponentWillMountWarnings = [];
+    pendingUNSAFE_ComponentWillMountWarnings = [];
+    pendingComponentWillReceivePropsWarnings = [];
+    pendingUNSAFE_ComponentWillReceivePropsWarnings = [];
+    pendingComponentWillUpdateWarnings = [];
+    pendingUNSAFE_ComponentWillUpdateWarnings = [];
+    pendingLegacyContextWarning = new Map();
+  };
+}
+
+var resolveFamily = null; // $FlowFixMe Flow gets confused by a WeakSet feature check below.
+
+var failedBoundaries = null;
+var setRefreshHandler = function (handler) {
+  {
+    resolveFamily = handler;
+  }
+};
+function resolveFunctionForHotReloading(type) {
+  {
+    if (resolveFamily === null) {
+      // Hot reloading is disabled.
+      return type;
+    }
+
+    var family = resolveFamily(type);
+
+    if (family === undefined) {
+      return type;
+    } // Use the latest known implementation.
+
+
+    return family.current;
+  }
+}
+function resolveClassForHotReloading(type) {
+  // No implementation differences.
+  return resolveFunctionForHotReloading(type);
+}
+function resolveForwardRefForHotReloading(type) {
+  {
+    if (resolveFamily === null) {
+      // Hot reloading is disabled.
+      return type;
+    }
+
+    var family = resolveFamily(type);
+
+    if (family === undefined) {
+      // Check if we're dealing with a real forwardRef. Don't want to crash early.
+      if (type !== null && type !== undefined && typeof type.render === 'function') {
+        // ForwardRef is special because its resolved .type is an object,
+        // but it's possible that we only have its inner render function in the map.
+        // If that inner render function is different, we'll build a new forwardRef type.
+        var currentRender = resolveFunctionForHotReloading(type.render);
+
+        if (type.render !== currentRender) {
+          var syntheticType = {
+            $$typeof: REACT_FORWARD_REF_TYPE,
+            render: currentRender
+          };
+
+          if (type.displayName !== undefined) {
+            syntheticType.displayName = type.displayName;
+          }
+
+          return syntheticType;
+        }
+      }
+
+      return type;
+    } // Use the latest known implementation.
+
+
+    return family.current;
+  }
+}
+function isCompatibleFamilyForHotReloading(fiber, element) {
+  {
+    if (resolveFamily === null) {
+      // Hot reloading is disabled.
+      return false;
+    }
+
+    var prevType = fiber.elementType;
+    var nextType = element.type; // If we got here, we know types aren't === equal.
+
+    var needsCompareFamilies = false;
+    var $$typeofNextType = typeof nextType === 'object' && nextType !== null ? nextType.$$typeof : null;
+
+    switch (fiber.tag) {
+      case ClassComponent:
+        {
+          if (typeof nextType === 'function') {
+            needsCompareFamilies = true;
+          }
+
+          break;
+        }
+
+      case FunctionComponent:
+        {
+          if (typeof nextType === 'function') {
+            needsCompareFamilies = true;
+          } else if ($$typeofNextType === REACT_LAZY_TYPE) {
+            // We don't know the inner type yet.
+            // We're going to assume that the lazy inner type is stable,
+            // and so it is sufficient to avoid reconciling it away.
+            // We're not going to unwrap or actually use the new lazy type.
+            needsCompareFamilies = true;
+          }
+
+          break;
+        }
+
+      case ForwardRef:
+        {
+          if ($$typeofNextType === REACT_FORWARD_REF_TYPE) {
+            needsCompareFamilies = true;
+          } else if ($$typeofNextType === REACT_LAZY_TYPE) {
+            needsCompareFamilies = true;
+          }
+
+          break;
+        }
+
+      case MemoComponent:
+      case SimpleMemoComponent:
+        {
+          if ($$typeofNextType === REACT_MEMO_TYPE) {
+            // TODO: if it was but can no longer be simple,
+            // we shouldn't set this.
+            needsCompareFamilies = true;
+          } else if ($$typeofNextType === REACT_LAZY_TYPE) {
+            needsCompareFamilies = true;
+          }
+
+          break;
+        }
+
+      default:
+        return false;
+    } // Check if both types have a family and it's the same one.
+
+
+    if (needsCompareFamilies) {
+      // Note: memo() and forwardRef() we'll compare outer rather than inner type.
+      // This means both of them need to be registered to preserve state.
+      // If we unwrapped and compared the inner types for wrappers instead,
+      // then we would risk falsely saying two separate memo(Foo)
+      // calls are equivalent because they wrap the same Foo function.
+      var prevFamily = resolveFamily(prevType);
+
+      if (prevFamily !== undefined && prevFamily === resolveFamily(nextType)) {
+        return true;
+      }
+    }
+
+    return false;
+  }
+}
+function markFailedErrorBoundaryForHotReloading(fiber) {
+  {
+    if (resolveFamily === null) {
+      // Hot reloading is disabled.
+      return;
+    }
+
+    if (typeof WeakSet !== 'function') {
+      return;
+    }
+
+    if (failedBoundaries === null) {
+      failedBoundaries = new WeakSet();
+    }
+
+    failedBoundaries.add(fiber);
+  }
+}
+var scheduleRefresh = function (root, update) {
+  {
+    if (resolveFamily === null) {
+      // Hot reloading is disabled.
+      return;
+    }
+
+    var staleFamilies = update.staleFamilies,
+        updatedFamilies = update.updatedFamilies;
+    flushPassiveEffects();
+    flushSync(function () {
+      scheduleFibersWithFamiliesRecursively(root.current, updatedFamilies, staleFamilies);
+    });
+  }
+};
+var scheduleRoot = function (root, element) {
+  {
+    if (root.context !== emptyContextObject) {
+      // Super edge case: root has a legacy _renderSubtree context
+      // but we don't know the parentComponent so we can't pass it.
+      // Just ignore. We'll delete this with _renderSubtree code path later.
+      return;
+    }
+
+    flushPassiveEffects();
+    syncUpdates(function () {
+      updateContainer(element, root, null, null);
+    });
+  }
+};
+
+function scheduleFibersWithFamiliesRecursively(fiber, updatedFamilies, staleFamilies) {
+  {
+    var alternate = fiber.alternate,
+        child = fiber.child,
+        sibling = fiber.sibling,
+        tag = fiber.tag,
+        type = fiber.type;
+    var candidateType = null;
+
+    switch (tag) {
+      case FunctionComponent:
+      case SimpleMemoComponent:
+      case ClassComponent:
+        candidateType = type;
+        break;
+
+      case ForwardRef:
+        candidateType = type.render;
+        break;
+    }
+
+    if (resolveFamily === null) {
+      throw new Error('Expected resolveFamily to be set during hot reload.');
+    }
+
+    var needsRender = false;
+    var needsRemount = false;
+
+    if (candidateType !== null) {
+      var family = resolveFamily(candidateType);
+
+      if (family !== undefined) {
+        if (staleFamilies.has(family)) {
+          needsRemount = true;
+        } else if (updatedFamilies.has(family)) {
+          if (tag === ClassComponent) {
+            needsRemount = true;
+          } else {
+            needsRender = true;
+          }
+        }
+      }
+    }
+
+    if (failedBoundaries !== null) {
+      if (failedBoundaries.has(fiber) || alternate !== null && failedBoundaries.has(alternate)) {
+        needsRemount = true;
+      }
+    }
+
+    if (needsRemount) {
+      fiber._debugNeedsRemount = true;
+    }
+
+    if (needsRemount || needsRender) {
+      scheduleWork(fiber, Sync);
+    }
+
+    if (child !== null && !needsRemount) {
+      scheduleFibersWithFamiliesRecursively(child, updatedFamilies, staleFamilies);
+    }
+
+    if (sibling !== null) {
+      scheduleFibersWithFamiliesRecursively(sibling, updatedFamilies, staleFamilies);
+    }
+  }
+}
+
+var findHostInstancesForRefresh = function (root, families) {
+  {
+    var hostInstances = new Set();
+    var types = new Set(families.map(function (family) {
+      return family.current;
+    }));
+    findHostInstancesForMatchingFibersRecursively(root.current, types, hostInstances);
+    return hostInstances;
+  }
+};
+
+function findHostInstancesForMatchingFibersRecursively(fiber, types, hostInstances) {
+  {
+    var child = fiber.child,
+        sibling = fiber.sibling,
+        tag = fiber.tag,
+        type = fiber.type;
+    var candidateType = null;
+
+    switch (tag) {
+      case FunctionComponent:
+      case SimpleMemoComponent:
+      case ClassComponent:
+        candidateType = type;
+        break;
+
+      case ForwardRef:
+        candidateType = type.render;
+        break;
+    }
+
+    var didMatch = false;
+
+    if (candidateType !== null) {
+      if (types.has(candidateType)) {
+        didMatch = true;
+      }
+    }
+
+    if (didMatch) {
+      // We have a match. This only drills down to the closest host components.
+      // There's no need to search deeper because for the purpose of giving
+      // visual feedback, "flashing" outermost parent rectangles is sufficient.
+      findHostInstancesForFiberShallowly(fiber, hostInstances);
+    } else {
+      // If there's no match, maybe there will be one further down in the child tree.
+      if (child !== null) {
+        findHostInstancesForMatchingFibersRecursively(child, types, hostInstances);
+      }
+    }
+
+    if (sibling !== null) {
+      findHostInstancesForMatchingFibersRecursively(sibling, types, hostInstances);
+    }
+  }
+}
+
+function findHostInstancesForFiberShallowly(fiber, hostInstances) {
+  {
+    var foundHostInstances = findChildHostInstancesForFiberShallowly(fiber, hostInstances);
+
+    if (foundHostInstances) {
+      return;
+    } // If we didn't find any host children, fallback to closest host parent.
+
+
+    var node = fiber;
+
+    while (true) {
+      switch (node.tag) {
+        case HostComponent:
+          hostInstances.add(node.stateNode);
+          return;
+
+        case HostPortal:
+          hostInstances.add(node.stateNode.containerInfo);
+          return;
+
+        case HostRoot:
+          hostInstances.add(node.stateNode.containerInfo);
+          return;
+      }
+
+      if (node.return === null) {
+        throw new Error('Expected to reach root first.');
+      }
+
+      node = node.return;
+    }
+  }
+}
+
+function findChildHostInstancesForFiberShallowly(fiber, hostInstances) {
+  {
+    var node = fiber;
+    var foundHostInstances = false;
+
+    while (true) {
+      if (node.tag === HostComponent) {
+        // We got a match.
+        foundHostInstances = true;
+        hostInstances.add(node.stateNode); // There may still be more, so keep searching.
+      } else if (node.child !== null) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+
+      if (node === fiber) {
+        return foundHostInstances;
+      }
+
+      while (node.sibling === null) {
+        if (node.return === null || node.return === fiber) {
+          return foundHostInstances;
+        }
+
+        node = node.return;
+      }
+
+      node.sibling.return = node.return;
+      node = node.sibling;
+    }
+  }
+
+  return false;
+}
+
+function resolveDefaultProps(Component, baseProps) {
+  if (Component && Component.defaultProps) {
+    // Resolve default props. Taken from ReactElement
+    var props = _assign({}, baseProps);
+
+    var defaultProps = Component.defaultProps;
+
+    for (var propName in defaultProps) {
+      if (props[propName] === undefined) {
+        props[propName] = defaultProps[propName];
+      }
+    }
+
+    return props;
+  }
+
+  return baseProps;
+}
+function readLazyComponentType(lazyComponent) {
+  initializeLazyComponentType(lazyComponent);
+
+  if (lazyComponent._status !== Resolved) {
+    throw lazyComponent._result;
+  }
+
+  return lazyComponent._result;
+}
+
+var valueCursor = createCursor(null);
+var rendererSigil;
+
+{
+  // Use this to detect multiple renderers using the same context
+  rendererSigil = {};
+}
+
+var currentlyRenderingFiber = null;
+var lastContextDependency = null;
+var lastContextWithAllBitsObserved = null;
+var isDisallowedContextReadInDEV = false;
+function resetContextDependencies() {
+  // This is called right before React yields execution, to ensure `readContext`
+  // cannot be called outside the render phase.
+  currentlyRenderingFiber = null;
+  lastContextDependency = null;
+  lastContextWithAllBitsObserved = null;
+
+  {
+    isDisallowedContextReadInDEV = false;
+  }
+}
+function enterDisallowedContextReadInDEV() {
+  {
+    isDisallowedContextReadInDEV = true;
+  }
+}
+function exitDisallowedContextReadInDEV() {
+  {
+    isDisallowedContextReadInDEV = false;
+  }
+}
+function pushProvider(providerFiber, nextValue) {
+  var context = providerFiber.type._context;
+
+  {
+    push(valueCursor, context._currentValue, providerFiber);
+    context._currentValue = nextValue;
+
+    {
+      if (context._currentRenderer !== undefined && context._currentRenderer !== null && context._currentRenderer !== rendererSigil) {
+        error('Detected multiple renderers concurrently rendering the ' + 'same context provider. This is currently unsupported.');
+      }
+
+      context._currentRenderer = rendererSigil;
+    }
+  }
+}
+function popProvider(providerFiber) {
+  var currentValue = valueCursor.current;
+  pop(valueCursor, providerFiber);
+  var context = providerFiber.type._context;
+
+  {
+    context._currentValue = currentValue;
+  }
+}
+function calculateChangedBits(context, newValue, oldValue) {
+  if (objectIs(oldValue, newValue)) {
+    // No change
+    return 0;
+  } else {
+    var changedBits = typeof context._calculateChangedBits === 'function' ? context._calculateChangedBits(oldValue, newValue) : MAX_SIGNED_31_BIT_INT;
+
+    {
+      if ((changedBits & MAX_SIGNED_31_BIT_INT) !== changedBits) {
+        error('calculateChangedBits: Expected the return value to be a ' + '31-bit integer. Instead received: %s', changedBits);
+      }
+    }
+
+    return changedBits | 0;
+  }
+}
+function scheduleWorkOnParentPath(parent, renderExpirationTime) {
+  // Update the child expiration time of all the ancestors, including
+  // the alternates.
+  var node = parent;
+
+  while (node !== null) {
+    var alternate = node.alternate;
+
+    if (node.childExpirationTime < renderExpirationTime) {
+      node.childExpirationTime = renderExpirationTime;
+
+      if (alternate !== null && alternate.childExpirationTime < renderExpirationTime) {
+        alternate.childExpirationTime = renderExpirationTime;
+      }
+    } else if (alternate !== null && alternate.childExpirationTime < renderExpirationTime) {
+      alternate.childExpirationTime = renderExpirationTime;
+    } else {
+      // Neither alternate was updated, which means the rest of the
+      // ancestor path already has sufficient priority.
+      break;
+    }
+
+    node = node.return;
+  }
+}
+function propagateContextChange(workInProgress, context, changedBits, renderExpirationTime) {
+  var fiber = workInProgress.child;
+
+  if (fiber !== null) {
+    // Set the return pointer of the child to the work-in-progress fiber.
+    fiber.return = workInProgress;
+  }
+
+  while (fiber !== null) {
+    var nextFiber = void 0; // Visit this fiber.
+
+    var list = fiber.dependencies;
+
+    if (list !== null) {
+      nextFiber = fiber.child;
+      var dependency = list.firstContext;
+
+      while (dependency !== null) {
+        // Check if the context matches.
+        if (dependency.context === context && (dependency.observedBits & changedBits) !== 0) {
+          // Match! Schedule an update on this fiber.
+          if (fiber.tag === ClassComponent) {
+            // Schedule a force update on the work-in-progress.
+            var update = createUpdate(renderExpirationTime, null);
+            update.tag = ForceUpdate; // TODO: Because we don't have a work-in-progress, this will add the
+            // update to the current fiber, too, which means it will persist even if
+            // this render is thrown away. Since it's a race condition, not sure it's
+            // worth fixing.
+
+            enqueueUpdate(fiber, update);
+          }
+
+          if (fiber.expirationTime < renderExpirationTime) {
+            fiber.expirationTime = renderExpirationTime;
+          }
+
+          var alternate = fiber.alternate;
+
+          if (alternate !== null && alternate.expirationTime < renderExpirationTime) {
+            alternate.expirationTime = renderExpirationTime;
+          }
+
+          scheduleWorkOnParentPath(fiber.return, renderExpirationTime); // Mark the expiration time on the list, too.
+
+          if (list.expirationTime < renderExpirationTime) {
+            list.expirationTime = renderExpirationTime;
+          } // Since we already found a match, we can stop traversing the
+          // dependency list.
+
+
+          break;
+        }
+
+        dependency = dependency.next;
+      }
+    } else if (fiber.tag === ContextProvider) {
+      // Don't scan deeper if this is a matching provider
+      nextFiber = fiber.type === workInProgress.type ? null : fiber.child;
+    } else {
+      // Traverse down.
+      nextFiber = fiber.child;
+    }
+
+    if (nextFiber !== null) {
+      // Set the return pointer of the child to the work-in-progress fiber.
+      nextFiber.return = fiber;
+    } else {
+      // No child. Traverse to next sibling.
+      nextFiber = fiber;
+
+      while (nextFiber !== null) {
+        if (nextFiber === workInProgress) {
+          // We're back to the root of this subtree. Exit.
+          nextFiber = null;
+          break;
+        }
+
+        var sibling = nextFiber.sibling;
+
+        if (sibling !== null) {
+          // Set the return pointer of the sibling to the work-in-progress fiber.
+          sibling.return = nextFiber.return;
+          nextFiber = sibling;
+          break;
+        } // No more siblings. Traverse up.
+
+
+        nextFiber = nextFiber.return;
+      }
+    }
+
+    fiber = nextFiber;
+  }
+}
+function prepareToReadContext(workInProgress, renderExpirationTime) {
+  currentlyRenderingFiber = workInProgress;
+  lastContextDependency = null;
+  lastContextWithAllBitsObserved = null;
+  var dependencies = workInProgress.dependencies;
+
+  if (dependencies !== null) {
+    var firstContext = dependencies.firstContext;
+
+    if (firstContext !== null) {
+      if (dependencies.expirationTime >= renderExpirationTime) {
+        // Context list has a pending update. Mark that this fiber performed work.
+        markWorkInProgressReceivedUpdate();
+      } // Reset the work-in-progress list
+
+
+      dependencies.firstContext = null;
+    }
+  }
+}
+function readContext(context, observedBits) {
+  {
+    // This warning would fire if you read context inside a Hook like useMemo.
+    // Unlike the class check below, it's not enforced in production for perf.
+    if (isDisallowedContextReadInDEV) {
+      error('Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().');
+    }
+  }
+
+  if (lastContextWithAllBitsObserved === context) ; else if (observedBits === false || observedBits === 0) ; else {
+    var resolvedObservedBits; // Avoid deopting on observable arguments or heterogeneous types.
+
+    if (typeof observedBits !== 'number' || observedBits === MAX_SIGNED_31_BIT_INT) {
+      // Observe all updates.
+      lastContextWithAllBitsObserved = context;
+      resolvedObservedBits = MAX_SIGNED_31_BIT_INT;
+    } else {
+      resolvedObservedBits = observedBits;
+    }
+
+    var contextItem = {
+      context: context,
+      observedBits: resolvedObservedBits,
+      next: null
+    };
+
+    if (lastContextDependency === null) {
+      if (!(currentlyRenderingFiber !== null)) {
+        {
+          throw Error( "Context can only be read while React is rendering. In classes, you can read it in the render method or getDerivedStateFromProps. In function components, you can read it directly in the function body, but not inside Hooks like useReducer() or useMemo()." );
+        }
+      } // This is the first dependency for this component. Create a new list.
+
+
+      lastContextDependency = contextItem;
+      currentlyRenderingFiber.dependencies = {
+        expirationTime: NoWork,
+        firstContext: contextItem,
+        responders: null
+      };
+    } else {
+      // Append a new context item.
+      lastContextDependency = lastContextDependency.next = contextItem;
+    }
+  }
+
+  return  context._currentValue ;
+}
+
+var UpdateState = 0;
+var ReplaceState = 1;
+var ForceUpdate = 2;
+var CaptureUpdate = 3; // Global state that is reset at the beginning of calling `processUpdateQueue`.
+// It should only be read right after calling `processUpdateQueue`, via
+// `checkHasForceUpdateAfterProcessing`.
+
+var hasForceUpdate = false;
+var didWarnUpdateInsideUpdate;
+var currentlyProcessingQueue;
+
+{
+  didWarnUpdateInsideUpdate = false;
+  currentlyProcessingQueue = null;
+}
+
+function initializeUpdateQueue(fiber) {
+  var queue = {
+    baseState: fiber.memoizedState,
+    baseQueue: null,
+    shared: {
+      pending: null
+    },
+    effects: null
+  };
+  fiber.updateQueue = queue;
+}
+function cloneUpdateQueue(current, workInProgress) {
+  // Clone the update queue from current. Unless it's already a clone.
+  var queue = workInProgress.updateQueue;
+  var currentQueue = current.updateQueue;
+
+  if (queue === currentQueue) {
+    var clone = {
+      baseState: currentQueue.baseState,
+      baseQueue: currentQueue.baseQueue,
+      shared: currentQueue.shared,
+      effects: currentQueue.effects
+    };
+    workInProgress.updateQueue = clone;
+  }
+}
+function createUpdate(expirationTime, suspenseConfig) {
+  var update = {
+    expirationTime: expirationTime,
+    suspenseConfig: suspenseConfig,
+    tag: UpdateState,
+    payload: null,
+    callback: null,
+    next: null
+  };
+  update.next = update;
+
+  {
+    update.priority = getCurrentPriorityLevel();
+  }
+
+  return update;
+}
+function enqueueUpdate(fiber, update) {
+  var updateQueue = fiber.updateQueue;
+
+  if (updateQueue === null) {
+    // Only occurs if the fiber has been unmounted.
+    return;
+  }
+
+  var sharedQueue = updateQueue.shared;
+  var pending = sharedQueue.pending;
+
+  if (pending === null) {
+    // This is the first update. Create a circular list.
+    update.next = update;
+  } else {
+    update.next = pending.next;
+    pending.next = update;
+  }
+
+  sharedQueue.pending = update;
+
+  {
+    if (currentlyProcessingQueue === sharedQueue && !didWarnUpdateInsideUpdate) {
+      error('An update (setState, replaceState, or forceUpdate) was scheduled ' + 'from inside an update function. Update functions should be pure, ' + 'with zero side-effects. Consider using componentDidUpdate or a ' + 'callback.');
+
+      didWarnUpdateInsideUpdate = true;
+    }
+  }
+}
+function enqueueCapturedUpdate(workInProgress, update) {
+  var current = workInProgress.alternate;
+
+  if (current !== null) {
+    // Ensure the work-in-progress queue is a clone
+    cloneUpdateQueue(current, workInProgress);
+  } // Captured updates go only on the work-in-progress queue.
+
+
+  var queue = workInProgress.updateQueue; // Append the update to the end of the list.
+
+  var last = queue.baseQueue;
+
+  if (last === null) {
+    queue.baseQueue = update.next = update;
+    update.next = update;
+  } else {
+    update.next = last.next;
+    last.next = update;
+  }
+}
+
+function getStateFromUpdate(workInProgress, queue, update, prevState, nextProps, instance) {
+  switch (update.tag) {
+    case ReplaceState:
+      {
+        var payload = update.payload;
+
+        if (typeof payload === 'function') {
+          // Updater function
+          {
+            enterDisallowedContextReadInDEV();
+
+            if ( workInProgress.mode & StrictMode) {
+              payload.call(instance, prevState, nextProps);
+            }
+          }
+
+          var nextState = payload.call(instance, prevState, nextProps);
+
+          {
+            exitDisallowedContextReadInDEV();
+          }
+
+          return nextState;
+        } // State object
+
+
+        return payload;
+      }
+
+    case CaptureUpdate:
+      {
+        workInProgress.effectTag = workInProgress.effectTag & ~ShouldCapture | DidCapture;
+      }
+    // Intentional fallthrough
+
+    case UpdateState:
+      {
+        var _payload = update.payload;
+        var partialState;
+
+        if (typeof _payload === 'function') {
+          // Updater function
+          {
+            enterDisallowedContextReadInDEV();
+
+            if ( workInProgress.mode & StrictMode) {
+              _payload.call(instance, prevState, nextProps);
+            }
+          }
+
+          partialState = _payload.call(instance, prevState, nextProps);
+
+          {
+            exitDisallowedContextReadInDEV();
+          }
+        } else {
+          // Partial state object
+          partialState = _payload;
+        }
+
+        if (partialState === null || partialState === undefined) {
+          // Null and undefined are treated as no-ops.
+          return prevState;
+        } // Merge the partial state and the previous state.
+
+
+        return _assign({}, prevState, partialState);
+      }
+
+    case ForceUpdate:
+      {
+        hasForceUpdate = true;
+        return prevState;
+      }
+  }
+
+  return prevState;
+}
+
+function processUpdateQueue(workInProgress, props, instance, renderExpirationTime) {
+  // This is always non-null on a ClassComponent or HostRoot
+  var queue = workInProgress.updateQueue;
+  hasForceUpdate = false;
+
+  {
+    currentlyProcessingQueue = queue.shared;
+  } // The last rebase update that is NOT part of the base state.
+
+
+  var baseQueue = queue.baseQueue; // The last pending update that hasn't been processed yet.
+
+  var pendingQueue = queue.shared.pending;
+
+  if (pendingQueue !== null) {
+    // We have new updates that haven't been processed yet.
+    // We'll add them to the base queue.
+    if (baseQueue !== null) {
+      // Merge the pending queue and the base queue.
+      var baseFirst = baseQueue.next;
+      var pendingFirst = pendingQueue.next;
+      baseQueue.next = pendingFirst;
+      pendingQueue.next = baseFirst;
+    }
+
+    baseQueue = pendingQueue;
+    queue.shared.pending = null; // TODO: Pass `current` as argument
+
+    var current = workInProgress.alternate;
+
+    if (current !== null) {
+      var currentQueue = current.updateQueue;
+
+      if (currentQueue !== null) {
+        currentQueue.baseQueue = pendingQueue;
+      }
+    }
+  } // These values may change as we process the queue.
+
+
+  if (baseQueue !== null) {
+    var first = baseQueue.next; // Iterate through the list of updates to compute the result.
+
+    var newState = queue.baseState;
+    var newExpirationTime = NoWork;
+    var newBaseState = null;
+    var newBaseQueueFirst = null;
+    var newBaseQueueLast = null;
+
+    if (first !== null) {
+      var update = first;
+
+      do {
+        var updateExpirationTime = update.expirationTime;
+
+        if (updateExpirationTime < renderExpirationTime) {
+          // Priority is insufficient. Skip this update. If this is the first
+          // skipped update, the previous update/state is the new base
+          // update/state.
+          var clone = {
+            expirationTime: update.expirationTime,
+            suspenseConfig: update.suspenseConfig,
+            tag: update.tag,
+            payload: update.payload,
+            callback: update.callback,
+            next: null
+          };
+
+          if (newBaseQueueLast === null) {
+            newBaseQueueFirst = newBaseQueueLast = clone;
+            newBaseState = newState;
+          } else {
+            newBaseQueueLast = newBaseQueueLast.next = clone;
+          } // Update the remaining priority in the queue.
+
+
+          if (updateExpirationTime > newExpirationTime) {
+            newExpirationTime = updateExpirationTime;
+          }
+        } else {
+          // This update does have sufficient priority.
+          if (newBaseQueueLast !== null) {
+            var _clone = {
+              expirationTime: Sync,
+              // This update is going to be committed so we never want uncommit it.
+              suspenseConfig: update.suspenseConfig,
+              tag: update.tag,
+              payload: update.payload,
+              callback: update.callback,
+              next: null
+            };
+            newBaseQueueLast = newBaseQueueLast.next = _clone;
+          } // Mark the event time of this update as relevant to this render pass.
+          // TODO: This should ideally use the true event time of this update rather than
+          // its priority which is a derived and not reverseable value.
+          // TODO: We should skip this update if it was already committed but currently
+          // we have no way of detecting the difference between a committed and suspended
+          // update here.
+
+
+          markRenderEventTimeAndConfig(updateExpirationTime, update.suspenseConfig); // Process this update.
+
+          newState = getStateFromUpdate(workInProgress, queue, update, newState, props, instance);
+          var callback = update.callback;
+
+          if (callback !== null) {
+            workInProgress.effectTag |= Callback;
+            var effects = queue.effects;
+
+            if (effects === null) {
+              queue.effects = [update];
+            } else {
+              effects.push(update);
+            }
+          }
+        }
+
+        update = update.next;
+
+        if (update === null || update === first) {
+          pendingQueue = queue.shared.pending;
+
+          if (pendingQueue === null) {
+            break;
+          } else {
+            // An update was scheduled from inside a reducer. Add the new
+            // pending updates to the end of the list and keep processing.
+            update = baseQueue.next = pendingQueue.next;
+            pendingQueue.next = first;
+            queue.baseQueue = baseQueue = pendingQueue;
+            queue.shared.pending = null;
+          }
+        }
+      } while (true);
+    }
+
+    if (newBaseQueueLast === null) {
+      newBaseState = newState;
+    } else {
+      newBaseQueueLast.next = newBaseQueueFirst;
+    }
+
+    queue.baseState = newBaseState;
+    queue.baseQueue = newBaseQueueLast; // Set the remaining expiration time to be whatever is remaining in the queue.
+    // This should be fine because the only two other things that contribute to
+    // expiration time are props and context. We're already in the middle of the
+    // begin phase by the time we start processing the queue, so we've already
+    // dealt with the props. Context in components that specify
+    // shouldComponentUpdate is tricky; but we'll have to account for
+    // that regardless.
+
+    markUnprocessedUpdateTime(newExpirationTime);
+    workInProgress.expirationTime = newExpirationTime;
+    workInProgress.memoizedState = newState;
+  }
+
+  {
+    currentlyProcessingQueue = null;
+  }
+}
+
+function callCallback(callback, context) {
+  if (!(typeof callback === 'function')) {
+    {
+      throw Error( "Invalid argument passed as callback. Expected a function. Instead received: " + callback );
+    }
+  }
+
+  callback.call(context);
+}
+
+function resetHasForceUpdateBeforeProcessing() {
+  hasForceUpdate = false;
+}
+function checkHasForceUpdateAfterProcessing() {
+  return hasForceUpdate;
+}
+function commitUpdateQueue(finishedWork, finishedQueue, instance) {
+  // Commit the effects
+  var effects = finishedQueue.effects;
+  finishedQueue.effects = null;
+
+  if (effects !== null) {
+    for (var i = 0; i < effects.length; i++) {
+      var effect = effects[i];
+      var callback = effect.callback;
+
+      if (callback !== null) {
+        effect.callback = null;
+        callCallback(callback, instance);
+      }
+    }
+  }
+}
+
+var ReactCurrentBatchConfig = ReactSharedInternals.ReactCurrentBatchConfig;
+function requestCurrentSuspenseConfig() {
+  return ReactCurrentBatchConfig.suspense;
+}
+
+var fakeInternalInstance = {};
+var isArray = Array.isArray; // React.Component uses a shared frozen object by default.
+// We'll use it to determine whether we need to initialize legacy refs.
+
+var emptyRefsObject = new React.Component().refs;
+var didWarnAboutStateAssignmentForComponent;
+var didWarnAboutUninitializedState;
+var didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate;
+var didWarnAboutLegacyLifecyclesAndDerivedState;
+var didWarnAboutUndefinedDerivedState;
+var warnOnUndefinedDerivedState;
+var warnOnInvalidCallback;
+var didWarnAboutDirectlyAssigningPropsToState;
+var didWarnAboutContextTypeAndContextTypes;
+var didWarnAboutInvalidateContextType;
+
+{
+  didWarnAboutStateAssignmentForComponent = new Set();
+  didWarnAboutUninitializedState = new Set();
+  didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate = new Set();
+  didWarnAboutLegacyLifecyclesAndDerivedState = new Set();
+  didWarnAboutDirectlyAssigningPropsToState = new Set();
+  didWarnAboutUndefinedDerivedState = new Set();
+  didWarnAboutContextTypeAndContextTypes = new Set();
+  didWarnAboutInvalidateContextType = new Set();
+  var didWarnOnInvalidCallback = new Set();
+
+  warnOnInvalidCallback = function (callback, callerName) {
+    if (callback === null || typeof callback === 'function') {
+      return;
+    }
+
+    var key = callerName + "_" + callback;
+
+    if (!didWarnOnInvalidCallback.has(key)) {
+      didWarnOnInvalidCallback.add(key);
+
+      error('%s(...): Expected the last optional `callback` argument to be a ' + 'function. Instead received: %s.', callerName, callback);
+    }
+  };
+
+  warnOnUndefinedDerivedState = function (type, partialState) {
+    if (partialState === undefined) {
+      var componentName = getComponentName(type) || 'Component';
+
+      if (!didWarnAboutUndefinedDerivedState.has(componentName)) {
+        didWarnAboutUndefinedDerivedState.add(componentName);
+
+        error('%s.getDerivedStateFromProps(): A valid state object (or null) must be returned. ' + 'You have returned undefined.', componentName);
+      }
+    }
+  }; // This is so gross but it's at least non-critical and can be removed if
+  // it causes problems. This is meant to give a nicer error message for
+  // ReactDOM15.unstable_renderSubtreeIntoContainer(reactDOM16Component,
+  // ...)) which otherwise throws a "_processChildContext is not a function"
+  // exception.
+
+
+  Object.defineProperty(fakeInternalInstance, '_processChildContext', {
+    enumerable: false,
+    value: function () {
+      {
+        {
+          throw Error( "_processChildContext is not available in React 16+. This likely means you have multiple copies of React and are attempting to nest a React 15 tree inside a React 16 tree using unstable_renderSubtreeIntoContainer, which isn't supported. Try to make sure you have only one copy of React (and ideally, switch to ReactDOM.createPortal)." );
+        }
+      }
+    }
+  });
+  Object.freeze(fakeInternalInstance);
+}
+
+function applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, nextProps) {
+  var prevState = workInProgress.memoizedState;
+
+  {
+    if ( workInProgress.mode & StrictMode) {
+      // Invoke the function an extra time to help detect side-effects.
+      getDerivedStateFromProps(nextProps, prevState);
+    }
+  }
+
+  var partialState = getDerivedStateFromProps(nextProps, prevState);
+
+  {
+    warnOnUndefinedDerivedState(ctor, partialState);
+  } // Merge the partial state and the previous state.
+
+
+  var memoizedState = partialState === null || partialState === undefined ? prevState : _assign({}, prevState, partialState);
+  workInProgress.memoizedState = memoizedState; // Once the update queue is empty, persist the derived state onto the
+  // base state.
+
+  if (workInProgress.expirationTime === NoWork) {
+    // Queue is always non-null for classes
+    var updateQueue = workInProgress.updateQueue;
+    updateQueue.baseState = memoizedState;
+  }
+}
+var classComponentUpdater = {
+  isMounted: isMounted,
+  enqueueSetState: function (inst, payload, callback) {
+    var fiber = get(inst);
+    var currentTime = requestCurrentTimeForUpdate();
+    var suspenseConfig = requestCurrentSuspenseConfig();
+    var expirationTime = computeExpirationForFiber(currentTime, fiber, suspenseConfig);
+    var update = createUpdate(expirationTime, suspenseConfig);
+    update.payload = payload;
+
+    if (callback !== undefined && callback !== null) {
+      {
+        warnOnInvalidCallback(callback, 'setState');
+      }
+
+      update.callback = callback;
+    }
+
+    enqueueUpdate(fiber, update);
+    scheduleWork(fiber, expirationTime);
+  },
+  enqueueReplaceState: function (inst, payload, callback) {
+    var fiber = get(inst);
+    var currentTime = requestCurrentTimeForUpdate();
+    var suspenseConfig = requestCurrentSuspenseConfig();
+    var expirationTime = computeExpirationForFiber(currentTime, fiber, suspenseConfig);
+    var update = createUpdate(expirationTime, suspenseConfig);
+    update.tag = ReplaceState;
+    update.payload = payload;
+
+    if (callback !== undefined && callback !== null) {
+      {
+        warnOnInvalidCallback(callback, 'replaceState');
+      }
+
+      update.callback = callback;
+    }
+
+    enqueueUpdate(fiber, update);
+    scheduleWork(fiber, expirationTime);
+  },
+  enqueueForceUpdate: function (inst, callback) {
+    var fiber = get(inst);
+    var currentTime = requestCurrentTimeForUpdate();
+    var suspenseConfig = requestCurrentSuspenseConfig();
+    var expirationTime = computeExpirationForFiber(currentTime, fiber, suspenseConfig);
+    var update = createUpdate(expirationTime, suspenseConfig);
+    update.tag = ForceUpdate;
+
+    if (callback !== undefined && callback !== null) {
+      {
+        warnOnInvalidCallback(callback, 'forceUpdate');
+      }
+
+      update.callback = callback;
+    }
+
+    enqueueUpdate(fiber, update);
+    scheduleWork(fiber, expirationTime);
+  }
+};
+
+function checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext) {
+  var instance = workInProgress.stateNode;
+
+  if (typeof instance.shouldComponentUpdate === 'function') {
+    {
+      if ( workInProgress.mode & StrictMode) {
+        // Invoke the function an extra time to help detect side-effects.
+        instance.shouldComponentUpdate(newProps, newState, nextContext);
+      }
+    }
+
+    startPhaseTimer(workInProgress, 'shouldComponentUpdate');
+    var shouldUpdate = instance.shouldComponentUpdate(newProps, newState, nextContext);
+    stopPhaseTimer();
+
+    {
+      if (shouldUpdate === undefined) {
+        error('%s.shouldComponentUpdate(): Returned undefined instead of a ' + 'boolean value. Make sure to return true or false.', getComponentName(ctor) || 'Component');
+      }
+    }
+
+    return shouldUpdate;
+  }
+
+  if (ctor.prototype && ctor.prototype.isPureReactComponent) {
+    return !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState);
+  }
+
+  return true;
+}
+
+function checkClassInstance(workInProgress, ctor, newProps) {
+  var instance = workInProgress.stateNode;
+
+  {
+    var name = getComponentName(ctor) || 'Component';
+    var renderPresent = instance.render;
+
+    if (!renderPresent) {
+      if (ctor.prototype && typeof ctor.prototype.render === 'function') {
+        error('%s(...): No `render` method found on the returned component ' + 'instance: did you accidentally return an object from the constructor?', name);
+      } else {
+        error('%s(...): No `render` method found on the returned component ' + 'instance: you may have forgotten to define `render`.', name);
+      }
+    }
+
+    if (instance.getInitialState && !instance.getInitialState.isReactClassApproved && !instance.state) {
+      error('getInitialState was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Did you mean to define a state property instead?', name);
+    }
+
+    if (instance.getDefaultProps && !instance.getDefaultProps.isReactClassApproved) {
+      error('getDefaultProps was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Use a static property to define defaultProps instead.', name);
+    }
+
+    if (instance.propTypes) {
+      error('propTypes was defined as an instance property on %s. Use a static ' + 'property to define propTypes instead.', name);
+    }
+
+    if (instance.contextType) {
+      error('contextType was defined as an instance property on %s. Use a static ' + 'property to define contextType instead.', name);
+    }
+
+    {
+      if (instance.contextTypes) {
+        error('contextTypes was defined as an instance property on %s. Use a static ' + 'property to define contextTypes instead.', name);
+      }
+
+      if (ctor.contextType && ctor.contextTypes && !didWarnAboutContextTypeAndContextTypes.has(ctor)) {
+        didWarnAboutContextTypeAndContextTypes.add(ctor);
+
+        error('%s declares both contextTypes and contextType static properties. ' + 'The legacy contextTypes property will be ignored.', name);
+      }
+    }
+
+    if (typeof instance.componentShouldUpdate === 'function') {
+      error('%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', name);
+    }
+
+    if (ctor.prototype && ctor.prototype.isPureReactComponent && typeof instance.shouldComponentUpdate !== 'undefined') {
+      error('%s has a method called shouldComponentUpdate(). ' + 'shouldComponentUpdate should not be used when extending React.PureComponent. ' + 'Please extend React.Component if shouldComponentUpdate is used.', getComponentName(ctor) || 'A pure component');
+    }
+
+    if (typeof instance.componentDidUnmount === 'function') {
+      error('%s has a method called ' + 'componentDidUnmount(). But there is no such lifecycle method. ' + 'Did you mean componentWillUnmount()?', name);
+    }
+
+    if (typeof instance.componentDidReceiveProps === 'function') {
+      error('%s has a method called ' + 'componentDidReceiveProps(). But there is no such lifecycle method. ' + 'If you meant to update the state in response to changing props, ' + 'use componentWillReceiveProps(). If you meant to fetch data or ' + 'run side-effects or mutations after React has updated the UI, use componentDidUpdate().', name);
+    }
+
+    if (typeof instance.componentWillRecieveProps === 'function') {
+      error('%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', name);
+    }
+
+    if (typeof instance.UNSAFE_componentWillRecieveProps === 'function') {
+      error('%s has a method called ' + 'UNSAFE_componentWillRecieveProps(). Did you mean UNSAFE_componentWillReceiveProps()?', name);
+    }
+
+    var hasMutatedProps = instance.props !== newProps;
+
+    if (instance.props !== undefined && hasMutatedProps) {
+      error('%s(...): When calling super() in `%s`, make sure to pass ' + "up the same props that your component's constructor was passed.", name, name);
+    }
+
+    if (instance.defaultProps) {
+      error('Setting defaultProps as an instance property on %s is not supported and will be ignored.' + ' Instead, define defaultProps as a static property on %s.', name, name);
+    }
+
+    if (typeof instance.getSnapshotBeforeUpdate === 'function' && typeof instance.componentDidUpdate !== 'function' && !didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.has(ctor)) {
+      didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.add(ctor);
+
+      error('%s: getSnapshotBeforeUpdate() should be used with componentDidUpdate(). ' + 'This component defines getSnapshotBeforeUpdate() only.', getComponentName(ctor));
+    }
+
+    if (typeof instance.getDerivedStateFromProps === 'function') {
+      error('%s: getDerivedStateFromProps() is defined as an instance method ' + 'and will be ignored. Instead, declare it as a static method.', name);
+    }
+
+    if (typeof instance.getDerivedStateFromError === 'function') {
+      error('%s: getDerivedStateFromError() is defined as an instance method ' + 'and will be ignored. Instead, declare it as a static method.', name);
+    }
+
+    if (typeof ctor.getSnapshotBeforeUpdate === 'function') {
+      error('%s: getSnapshotBeforeUpdate() is defined as a static method ' + 'and will be ignored. Instead, declare it as an instance method.', name);
+    }
+
+    var _state = instance.state;
+
+    if (_state && (typeof _state !== 'object' || isArray(_state))) {
+      error('%s.state: must be set to an object or null', name);
+    }
+
+    if (typeof instance.getChildContext === 'function' && typeof ctor.childContextTypes !== 'object') {
+      error('%s.getChildContext(): childContextTypes must be defined in order to ' + 'use getChildContext().', name);
+    }
+  }
+}
+
+function adoptClassInstance(workInProgress, instance) {
+  instance.updater = classComponentUpdater;
+  workInProgress.stateNode = instance; // The instance needs access to the fiber so that it can schedule updates
+
+  set(instance, workInProgress);
+
+  {
+    instance._reactInternalInstance = fakeInternalInstance;
+  }
+}
+
+function constructClassInstance(workInProgress, ctor, props) {
+  var isLegacyContextConsumer = false;
+  var unmaskedContext = emptyContextObject;
+  var context = emptyContextObject;
+  var contextType = ctor.contextType;
+
+  {
+    if ('contextType' in ctor) {
+      var isValid = // Allow null for conditional declaration
+      contextType === null || contextType !== undefined && contextType.$$typeof === REACT_CONTEXT_TYPE && contextType._context === undefined; // Not a <Context.Consumer>
+
+      if (!isValid && !didWarnAboutInvalidateContextType.has(ctor)) {
+        didWarnAboutInvalidateContextType.add(ctor);
+        var addendum = '';
+
+        if (contextType === undefined) {
+          addendum = ' However, it is set to undefined. ' + 'This can be caused by a typo or by mixing up named and default imports. ' + 'This can also happen due to a circular dependency, so ' + 'try moving the createContext() call to a separate file.';
+        } else if (typeof contextType !== 'object') {
+          addendum = ' However, it is set to a ' + typeof contextType + '.';
+        } else if (contextType.$$typeof === REACT_PROVIDER_TYPE) {
+          addendum = ' Did you accidentally pass the Context.Provider instead?';
+        } else if (contextType._context !== undefined) {
+          // <Context.Consumer>
+          addendum = ' Did you accidentally pass the Context.Consumer instead?';
+        } else {
+          addendum = ' However, it is set to an object with keys {' + Object.keys(contextType).join(', ') + '}.';
+        }
+
+        error('%s defines an invalid contextType. ' + 'contextType should point to the Context object returned by React.createContext().%s', getComponentName(ctor) || 'Component', addendum);
+      }
+    }
+  }
+
+  if (typeof contextType === 'object' && contextType !== null) {
+    context = readContext(contextType);
+  } else {
+    unmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
+    var contextTypes = ctor.contextTypes;
+    isLegacyContextConsumer = contextTypes !== null && contextTypes !== undefined;
+    context = isLegacyContextConsumer ? getMaskedContext(workInProgress, unmaskedContext) : emptyContextObject;
+  } // Instantiate twice to help detect side-effects.
+
+
+  {
+    if ( workInProgress.mode & StrictMode) {
+      new ctor(props, context); // eslint-disable-line no-new
+    }
+  }
+
+  var instance = new ctor(props, context);
+  var state = workInProgress.memoizedState = instance.state !== null && instance.state !== undefined ? instance.state : null;
+  adoptClassInstance(workInProgress, instance);
+
+  {
+    if (typeof ctor.getDerivedStateFromProps === 'function' && state === null) {
+      var componentName = getComponentName(ctor) || 'Component';
+
+      if (!didWarnAboutUninitializedState.has(componentName)) {
+        didWarnAboutUninitializedState.add(componentName);
+
+        error('`%s` uses `getDerivedStateFromProps` but its initial state is ' + '%s. This is not recommended. Instead, define the initial state by ' + 'assigning an object to `this.state` in the constructor of `%s`. ' + 'This ensures that `getDerivedStateFromProps` arguments have a consistent shape.', componentName, instance.state === null ? 'null' : 'undefined', componentName);
+      }
+    } // If new component APIs are defined, "unsafe" lifecycles won't be called.
+    // Warn about these lifecycles if they are present.
+    // Don't warn about react-lifecycles-compat polyfilled methods though.
+
+
+    if (typeof ctor.getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function') {
+      var foundWillMountName = null;
+      var foundWillReceivePropsName = null;
+      var foundWillUpdateName = null;
+
+      if (typeof instance.componentWillMount === 'function' && instance.componentWillMount.__suppressDeprecationWarning !== true) {
+        foundWillMountName = 'componentWillMount';
+      } else if (typeof instance.UNSAFE_componentWillMount === 'function') {
+        foundWillMountName = 'UNSAFE_componentWillMount';
+      }
+
+      if (typeof instance.componentWillReceiveProps === 'function' && instance.componentWillReceiveProps.__suppressDeprecationWarning !== true) {
+        foundWillReceivePropsName = 'componentWillReceiveProps';
+      } else if (typeof instance.UNSAFE_componentWillReceiveProps === 'function') {
+        foundWillReceivePropsName = 'UNSAFE_componentWillReceiveProps';
+      }
+
+      if (typeof instance.componentWillUpdate === 'function' && instance.componentWillUpdate.__suppressDeprecationWarning !== true) {
+        foundWillUpdateName = 'componentWillUpdate';
+      } else if (typeof instance.UNSAFE_componentWillUpdate === 'function') {
+        foundWillUpdateName = 'UNSAFE_componentWillUpdate';
+      }
+
+      if (foundWillMountName !== null || foundWillReceivePropsName !== null || foundWillUpdateName !== null) {
+        var _componentName = getComponentName(ctor) || 'Component';
+
+        var newApiName = typeof ctor.getDerivedStateFromProps === 'function' ? 'getDerivedStateFromProps()' : 'getSnapshotBeforeUpdate()';
+
+        if (!didWarnAboutLegacyLifecyclesAndDerivedState.has(_componentName)) {
+          didWarnAboutLegacyLifecyclesAndDerivedState.add(_componentName);
+
+          error('Unsafe legacy lifecycles will not be called for components using new component APIs.\n\n' + '%s uses %s but also contains the following legacy lifecycles:%s%s%s\n\n' + 'The above lifecycles should be removed. Learn more about this warning here:\n' + 'https://fb.me/react-unsafe-component-lifecycles', _componentName, newApiName, foundWillMountName !== null ? "\n  " + foundWillMountName : '', foundWillReceivePropsName !== null ? "\n  " + foundWillReceivePropsName : '', foundWillUpdateName !== null ? "\n  " + foundWillUpdateName : '');
+        }
+      }
+    }
+  } // Cache unmasked context so we can avoid recreating masked context unless necessary.
+  // ReactFiberContext usually updates this cache but can't for newly-created instances.
+
+
+  if (isLegacyContextConsumer) {
+    cacheContext(workInProgress, unmaskedContext, context);
+  }
+
+  return instance;
+}
+
+function callComponentWillMount(workInProgress, instance) {
+  startPhaseTimer(workInProgress, 'componentWillMount');
+  var oldState = instance.state;
+
+  if (typeof instance.componentWillMount === 'function') {
+    instance.componentWillMount();
+  }
+
+  if (typeof instance.UNSAFE_componentWillMount === 'function') {
+    instance.UNSAFE_componentWillMount();
+  }
+
+  stopPhaseTimer();
+
+  if (oldState !== instance.state) {
+    {
+      error('%s.componentWillMount(): Assigning directly to this.state is ' + "deprecated (except inside a component's " + 'constructor). Use setState instead.', getComponentName(workInProgress.type) || 'Component');
+    }
+
+    classComponentUpdater.enqueueReplaceState(instance, instance.state, null);
+  }
+}
+
+function callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext) {
+  var oldState = instance.state;
+  startPhaseTimer(workInProgress, 'componentWillReceiveProps');
+
+  if (typeof instance.componentWillReceiveProps === 'function') {
+    instance.componentWillReceiveProps(newProps, nextContext);
+  }
+
+  if (typeof instance.UNSAFE_componentWillReceiveProps === 'function') {
+    instance.UNSAFE_componentWillReceiveProps(newProps, nextContext);
+  }
+
+  stopPhaseTimer();
+
+  if (instance.state !== oldState) {
+    {
+      var componentName = getComponentName(workInProgress.type) || 'Component';
+
+      if (!didWarnAboutStateAssignmentForComponent.has(componentName)) {
+        didWarnAboutStateAssignmentForComponent.add(componentName);
+
+        error('%s.componentWillReceiveProps(): Assigning directly to ' + "this.state is deprecated (except inside a component's " + 'constructor). Use setState instead.', componentName);
+      }
+    }
+
+    classComponentUpdater.enqueueReplaceState(instance, instance.state, null);
+  }
+} // Invokes the mount life-cycles on a previously never rendered instance.
+
+
+function mountClassInstance(workInProgress, ctor, newProps, renderExpirationTime) {
+  {
+    checkClassInstance(workInProgress, ctor, newProps);
+  }
+
+  var instance = workInProgress.stateNode;
+  instance.props = newProps;
+  instance.state = workInProgress.memoizedState;
+  instance.refs = emptyRefsObject;
+  initializeUpdateQueue(workInProgress);
+  var contextType = ctor.contextType;
+
+  if (typeof contextType === 'object' && contextType !== null) {
+    instance.context = readContext(contextType);
+  } else {
+    var unmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
+    instance.context = getMaskedContext(workInProgress, unmaskedContext);
+  }
+
+  {
+    if (instance.state === newProps) {
+      var componentName = getComponentName(ctor) || 'Component';
+
+      if (!didWarnAboutDirectlyAssigningPropsToState.has(componentName)) {
+        didWarnAboutDirectlyAssigningPropsToState.add(componentName);
+
+        error('%s: It is not recommended to assign props directly to state ' + "because updates to props won't be reflected in state. " + 'In most cases, it is better to use props directly.', componentName);
+      }
+    }
+
+    if (workInProgress.mode & StrictMode) {
+      ReactStrictModeWarnings.recordLegacyContextWarning(workInProgress, instance);
+    }
+
+    {
+      ReactStrictModeWarnings.recordUnsafeLifecycleWarnings(workInProgress, instance);
+    }
+  }
+
+  processUpdateQueue(workInProgress, newProps, instance, renderExpirationTime);
+  instance.state = workInProgress.memoizedState;
+  var getDerivedStateFromProps = ctor.getDerivedStateFromProps;
+
+  if (typeof getDerivedStateFromProps === 'function') {
+    applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps);
+    instance.state = workInProgress.memoizedState;
+  } // In order to support react-lifecycles-compat polyfilled components,
+  // Unsafe lifecycles should not be invoked for components using the new APIs.
+
+
+  if (typeof ctor.getDerivedStateFromProps !== 'function' && typeof instance.getSnapshotBeforeUpdate !== 'function' && (typeof instance.UNSAFE_componentWillMount === 'function' || typeof instance.componentWillMount === 'function')) {
+    callComponentWillMount(workInProgress, instance); // If we had additional state updates during this life-cycle, let's
+    // process them now.
+
+    processUpdateQueue(workInProgress, newProps, instance, renderExpirationTime);
+    instance.state = workInProgress.memoizedState;
+  }
+
+  if (typeof instance.componentDidMount === 'function') {
+    workInProgress.effectTag |= Update;
+  }
+}
+
+function resumeMountClassInstance(workInProgress, ctor, newProps, renderExpirationTime) {
+  var instance = workInProgress.stateNode;
+  var oldProps = workInProgress.memoizedProps;
+  instance.props = oldProps;
+  var oldContext = instance.context;
+  var contextType = ctor.contextType;
+  var nextContext = emptyContextObject;
+
+  if (typeof contextType === 'object' && contextType !== null) {
+    nextContext = readContext(contextType);
+  } else {
+    var nextLegacyUnmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
+    nextContext = getMaskedContext(workInProgress, nextLegacyUnmaskedContext);
+  }
+
+  var getDerivedStateFromProps = ctor.getDerivedStateFromProps;
+  var hasNewLifecycles = typeof getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function'; // Note: During these life-cycles, instance.props/instance.state are what
+  // ever the previously attempted to render - not the "current". However,
+  // during componentDidUpdate we pass the "current" props.
+  // In order to support react-lifecycles-compat polyfilled components,
+  // Unsafe lifecycles should not be invoked for components using the new APIs.
+
+  if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillReceiveProps === 'function' || typeof instance.componentWillReceiveProps === 'function')) {
+    if (oldProps !== newProps || oldContext !== nextContext) {
+      callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext);
+    }
+  }
+
+  resetHasForceUpdateBeforeProcessing();
+  var oldState = workInProgress.memoizedState;
+  var newState = instance.state = oldState;
+  processUpdateQueue(workInProgress, newProps, instance, renderExpirationTime);
+  newState = workInProgress.memoizedState;
+
+  if (oldProps === newProps && oldState === newState && !hasContextChanged() && !checkHasForceUpdateAfterProcessing()) {
+    // If an update was already in progress, we should schedule an Update
+    // effect even though we're bailing out, so that cWU/cDU are called.
+    if (typeof instance.componentDidMount === 'function') {
+      workInProgress.effectTag |= Update;
+    }
+
+    return false;
+  }
+
+  if (typeof getDerivedStateFromProps === 'function') {
+    applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps);
+    newState = workInProgress.memoizedState;
+  }
+
+  var shouldUpdate = checkHasForceUpdateAfterProcessing() || checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext);
+
+  if (shouldUpdate) {
+    // In order to support react-lifecycles-compat polyfilled components,
+    // Unsafe lifecycles should not be invoked for components using the new APIs.
+    if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillMount === 'function' || typeof instance.componentWillMount === 'function')) {
+      startPhaseTimer(workInProgress, 'componentWillMount');
+
+      if (typeof instance.componentWillMount === 'function') {
+        instance.componentWillMount();
+      }
+
+      if (typeof instance.UNSAFE_componentWillMount === 'function') {
+        instance.UNSAFE_componentWillMount();
+      }
+
+      stopPhaseTimer();
+    }
+
+    if (typeof instance.componentDidMount === 'function') {
+      workInProgress.effectTag |= Update;
+    }
+  } else {
+    // If an update was already in progress, we should schedule an Update
+    // effect even though we're bailing out, so that cWU/cDU are called.
+    if (typeof instance.componentDidMount === 'function') {
+      workInProgress.effectTag |= Update;
+    } // If shouldComponentUpdate returned false, we should still update the
+    // memoized state to indicate that this work can be reused.
+
+
+    workInProgress.memoizedProps = newProps;
+    workInProgress.memoizedState = newState;
+  } // Update the existing instance's state, props, and context pointers even
+  // if shouldComponentUpdate returns false.
+
+
+  instance.props = newProps;
+  instance.state = newState;
+  instance.context = nextContext;
+  return shouldUpdate;
+} // Invokes the update life-cycles and returns false if it shouldn't rerender.
+
+
+function updateClassInstance(current, workInProgress, ctor, newProps, renderExpirationTime) {
+  var instance = workInProgress.stateNode;
+  cloneUpdateQueue(current, workInProgress);
+  var oldProps = workInProgress.memoizedProps;
+  instance.props = workInProgress.type === workInProgress.elementType ? oldProps : resolveDefaultProps(workInProgress.type, oldProps);
+  var oldContext = instance.context;
+  var contextType = ctor.contextType;
+  var nextContext = emptyContextObject;
+
+  if (typeof contextType === 'object' && contextType !== null) {
+    nextContext = readContext(contextType);
+  } else {
+    var nextUnmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
+    nextContext = getMaskedContext(workInProgress, nextUnmaskedContext);
+  }
+
+  var getDerivedStateFromProps = ctor.getDerivedStateFromProps;
+  var hasNewLifecycles = typeof getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function'; // Note: During these life-cycles, instance.props/instance.state are what
+  // ever the previously attempted to render - not the "current". However,
+  // during componentDidUpdate we pass the "current" props.
+  // In order to support react-lifecycles-compat polyfilled components,
+  // Unsafe lifecycles should not be invoked for components using the new APIs.
+
+  if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillReceiveProps === 'function' || typeof instance.componentWillReceiveProps === 'function')) {
+    if (oldProps !== newProps || oldContext !== nextContext) {
+      callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext);
+    }
+  }
+
+  resetHasForceUpdateBeforeProcessing();
+  var oldState = workInProgress.memoizedState;
+  var newState = instance.state = oldState;
+  processUpdateQueue(workInProgress, newProps, instance, renderExpirationTime);
+  newState = workInProgress.memoizedState;
+
+  if (oldProps === newProps && oldState === newState && !hasContextChanged() && !checkHasForceUpdateAfterProcessing()) {
+    // If an update was already in progress, we should schedule an Update
+    // effect even though we're bailing out, so that cWU/cDU are called.
+    if (typeof instance.componentDidUpdate === 'function') {
+      if (oldProps !== current.memoizedProps || oldState !== current.memoizedState) {
+        workInProgress.effectTag |= Update;
+      }
+    }
+
+    if (typeof instance.getSnapshotBeforeUpdate === 'function') {
+      if (oldProps !== current.memoizedProps || oldState !== current.memoizedState) {
+        workInProgress.effectTag |= Snapshot;
+      }
+    }
+
+    return false;
+  }
+
+  if (typeof getDerivedStateFromProps === 'function') {
+    applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps);
+    newState = workInProgress.memoizedState;
+  }
+
+  var shouldUpdate = checkHasForceUpdateAfterProcessing() || checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext);
+
+  if (shouldUpdate) {
+    // In order to support react-lifecycles-compat polyfilled components,
+    // Unsafe lifecycles should not be invoked for components using the new APIs.
+    if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillUpdate === 'function' || typeof instance.componentWillUpdate === 'function')) {
+      startPhaseTimer(workInProgress, 'componentWillUpdate');
+
+      if (typeof instance.componentWillUpdate === 'function') {
+        instance.componentWillUpdate(newProps, newState, nextContext);
+      }
+
+      if (typeof instance.UNSAFE_componentWillUpdate === 'function') {
+        instance.UNSAFE_componentWillUpdate(newProps, newState, nextContext);
+      }
+
+      stopPhaseTimer();
+    }
+
+    if (typeof instance.componentDidUpdate === 'function') {
+      workInProgress.effectTag |= Update;
+    }
+
+    if (typeof instance.getSnapshotBeforeUpdate === 'function') {
+      workInProgress.effectTag |= Snapshot;
+    }
+  } else {
+    // If an update was already in progress, we should schedule an Update
+    // effect even though we're bailing out, so that cWU/cDU are called.
+    if (typeof instance.componentDidUpdate === 'function') {
+      if (oldProps !== current.memoizedProps || oldState !== current.memoizedState) {
+        workInProgress.effectTag |= Update;
+      }
+    }
+
+    if (typeof instance.getSnapshotBeforeUpdate === 'function') {
+      if (oldProps !== current.memoizedProps || oldState !== current.memoizedState) {
+        workInProgress.effectTag |= Snapshot;
+      }
+    } // If shouldComponentUpdate returned false, we should still update the
+    // memoized props/state to indicate that this work can be reused.
+
+
+    workInProgress.memoizedProps = newProps;
+    workInProgress.memoizedState = newState;
+  } // Update the existing instance's state, props, and context pointers even
+  // if shouldComponentUpdate returns false.
+
+
+  instance.props = newProps;
+  instance.state = newState;
+  instance.context = nextContext;
+  return shouldUpdate;
+}
+
+var didWarnAboutMaps;
+var didWarnAboutGenerators;
+var didWarnAboutStringRefs;
+var ownerHasKeyUseWarning;
+var ownerHasFunctionTypeWarning;
+
+var warnForMissingKey = function (child) {};
+
+{
+  didWarnAboutMaps = false;
+  didWarnAboutGenerators = false;
+  didWarnAboutStringRefs = {};
+  /**
+   * Warn if there's no key explicitly set on dynamic arrays of children or
+   * object keys are not valid. This allows us to keep track of children between
+   * updates.
+   */
+
+  ownerHasKeyUseWarning = {};
+  ownerHasFunctionTypeWarning = {};
+
+  warnForMissingKey = function (child) {
+    if (child === null || typeof child !== 'object') {
+      return;
+    }
+
+    if (!child._store || child._store.validated || child.key != null) {
+      return;
+    }
+
+    if (!(typeof child._store === 'object')) {
+      {
+        throw Error( "React Component in warnForMissingKey should have a _store. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+
+    child._store.validated = true;
+    var currentComponentErrorInfo = 'Each child in a list should have a unique ' + '"key" prop. See https://fb.me/react-warning-keys for ' + 'more information.' + getCurrentFiberStackInDev();
+
+    if (ownerHasKeyUseWarning[currentComponentErrorInfo]) {
+      return;
+    }
+
+    ownerHasKeyUseWarning[currentComponentErrorInfo] = true;
+
+    error('Each child in a list should have a unique ' + '"key" prop. See https://fb.me/react-warning-keys for ' + 'more information.');
+  };
+}
+
+var isArray$1 = Array.isArray;
+
+function coerceRef(returnFiber, current, element) {
+  var mixedRef = element.ref;
+
+  if (mixedRef !== null && typeof mixedRef !== 'function' && typeof mixedRef !== 'object') {
+    {
+      // TODO: Clean this up once we turn on the string ref warning for
+      // everyone, because the strict mode case will no longer be relevant
+      if ((returnFiber.mode & StrictMode || warnAboutStringRefs) && // We warn in ReactElement.js if owner and self are equal for string refs
+      // because these cannot be automatically converted to an arrow function
+      // using a codemod. Therefore, we don't have to warn about string refs again.
+      !(element._owner && element._self && element._owner.stateNode !== element._self)) {
+        var componentName = getComponentName(returnFiber.type) || 'Component';
+
+        if (!didWarnAboutStringRefs[componentName]) {
+          {
+            error('A string ref, "%s", has been found within a strict mode tree. ' + 'String refs are a source of potential bugs and should be avoided. ' + 'We recommend using useRef() or createRef() instead. ' + 'Learn more about using refs safely here: ' + 'https://fb.me/react-strict-mode-string-ref%s', mixedRef, getStackByFiberInDevAndProd(returnFiber));
+          }
+
+          didWarnAboutStringRefs[componentName] = true;
+        }
+      }
+    }
+
+    if (element._owner) {
+      var owner = element._owner;
+      var inst;
+
+      if (owner) {
+        var ownerFiber = owner;
+
+        if (!(ownerFiber.tag === ClassComponent)) {
+          {
+            throw Error( "Function components cannot have string refs. We recommend using useRef() instead. Learn more about using refs safely here: https://fb.me/react-strict-mode-string-ref" );
+          }
+        }
+
+        inst = ownerFiber.stateNode;
+      }
+
+      if (!inst) {
+        {
+          throw Error( "Missing owner for string ref " + mixedRef + ". This error is likely caused by a bug in React. Please file an issue." );
+        }
+      }
+
+      var stringRef = '' + mixedRef; // Check if previous string ref matches new string ref
+
+      if (current !== null && current.ref !== null && typeof current.ref === 'function' && current.ref._stringRef === stringRef) {
+        return current.ref;
+      }
+
+      var ref = function (value) {
+        var refs = inst.refs;
+
+        if (refs === emptyRefsObject) {
+          // This is a lazy pooled frozen object, so we need to initialize.
+          refs = inst.refs = {};
+        }
+
+        if (value === null) {
+          delete refs[stringRef];
+        } else {
+          refs[stringRef] = value;
+        }
+      };
+
+      ref._stringRef = stringRef;
+      return ref;
+    } else {
+      if (!(typeof mixedRef === 'string')) {
+        {
+          throw Error( "Expected ref to be a function, a string, an object returned by React.createRef(), or null." );
+        }
+      }
+
+      if (!element._owner) {
+        {
+          throw Error( "Element ref was specified as a string (" + mixedRef + ") but no owner was set. This could happen for one of the following reasons:\n1. You may be adding a ref to a function component\n2. You may be adding a ref to a component that was not created inside a component's render method\n3. You have multiple copies of React loaded\nSee https://fb.me/react-refs-must-have-owner for more information." );
+        }
+      }
+    }
+  }
+
+  return mixedRef;
+}
+
+function throwOnInvalidObjectType(returnFiber, newChild) {
+  if (returnFiber.type !== 'textarea') {
+    var addendum = '';
+
+    {
+      addendum = ' If you meant to render a collection of children, use an array ' + 'instead.' + getCurrentFiberStackInDev();
+    }
+
+    {
+      {
+        throw Error( "Objects are not valid as a React child (found: " + (Object.prototype.toString.call(newChild) === '[object Object]' ? 'object with keys {' + Object.keys(newChild).join(', ') + '}' : newChild) + ")." + addendum );
+      }
+    }
+  }
+}
+
+function warnOnFunctionType() {
+  {
+    var currentComponentErrorInfo = 'Functions are not valid as a React child. This may happen if ' + 'you return a Component instead of <Component /> from render. ' + 'Or maybe you meant to call this function rather than return it.' + getCurrentFiberStackInDev();
+
+    if (ownerHasFunctionTypeWarning[currentComponentErrorInfo]) {
+      return;
+    }
+
+    ownerHasFunctionTypeWarning[currentComponentErrorInfo] = true;
+
+    error('Functions are not valid as a React child. This may happen if ' + 'you return a Component instead of <Component /> from render. ' + 'Or maybe you meant to call this function rather than return it.');
+  }
+} // This wrapper function exists because I expect to clone the code in each path
+// to be able to optimize each path individually by branching early. This needs
+// a compiler or we can do it manually. Helpers that don't need this branching
+// live outside of this function.
+
+
+function ChildReconciler(shouldTrackSideEffects) {
+  function deleteChild(returnFiber, childToDelete) {
+    if (!shouldTrackSideEffects) {
+      // Noop.
+      return;
+    } // Deletions are added in reversed order so we add it to the front.
+    // At this point, the return fiber's effect list is empty except for
+    // deletions, so we can just append the deletion to the list. The remaining
+    // effects aren't added until the complete phase. Once we implement
+    // resuming, this may not be true.
+
+
+    var last = returnFiber.lastEffect;
+
+    if (last !== null) {
+      last.nextEffect = childToDelete;
+      returnFiber.lastEffect = childToDelete;
+    } else {
+      returnFiber.firstEffect = returnFiber.lastEffect = childToDelete;
+    }
+
+    childToDelete.nextEffect = null;
+    childToDelete.effectTag = Deletion;
+  }
+
+  function deleteRemainingChildren(returnFiber, currentFirstChild) {
+    if (!shouldTrackSideEffects) {
+      // Noop.
+      return null;
+    } // TODO: For the shouldClone case, this could be micro-optimized a bit by
+    // assuming that after the first child we've already added everything.
+
+
+    var childToDelete = currentFirstChild;
+
+    while (childToDelete !== null) {
+      deleteChild(returnFiber, childToDelete);
+      childToDelete = childToDelete.sibling;
+    }
+
+    return null;
+  }
+
+  function mapRemainingChildren(returnFiber, currentFirstChild) {
+    // Add the remaining children to a temporary map so that we can find them by
+    // keys quickly. Implicit (null) keys get added to this set with their index
+    // instead.
+    var existingChildren = new Map();
+    var existingChild = currentFirstChild;
+
+    while (existingChild !== null) {
+      if (existingChild.key !== null) {
+        existingChildren.set(existingChild.key, existingChild);
+      } else {
+        existingChildren.set(existingChild.index, existingChild);
+      }
+
+      existingChild = existingChild.sibling;
+    }
+
+    return existingChildren;
+  }
+
+  function useFiber(fiber, pendingProps) {
+    // We currently set sibling to null and index to 0 here because it is easy
+    // to forget to do before returning it. E.g. for the single child case.
+    var clone = createWorkInProgress(fiber, pendingProps);
+    clone.index = 0;
+    clone.sibling = null;
+    return clone;
+  }
+
+  function placeChild(newFiber, lastPlacedIndex, newIndex) {
+    newFiber.index = newIndex;
+
+    if (!shouldTrackSideEffects) {
+      // Noop.
+      return lastPlacedIndex;
+    }
+
+    var current = newFiber.alternate;
+
+    if (current !== null) {
+      var oldIndex = current.index;
+
+      if (oldIndex < lastPlacedIndex) {
+        // This is a move.
+        newFiber.effectTag = Placement;
+        return lastPlacedIndex;
+      } else {
+        // This item can stay in place.
+        return oldIndex;
+      }
+    } else {
+      // This is an insertion.
+      newFiber.effectTag = Placement;
+      return lastPlacedIndex;
+    }
+  }
+
+  function placeSingleChild(newFiber) {
+    // This is simpler for the single child case. We only need to do a
+    // placement for inserting new children.
+    if (shouldTrackSideEffects && newFiber.alternate === null) {
+      newFiber.effectTag = Placement;
+    }
+
+    return newFiber;
+  }
+
+  function updateTextNode(returnFiber, current, textContent, expirationTime) {
+    if (current === null || current.tag !== HostText) {
+      // Insert
+      var created = createFiberFromText(textContent, returnFiber.mode, expirationTime);
+      created.return = returnFiber;
+      return created;
+    } else {
+      // Update
+      var existing = useFiber(current, textContent);
+      existing.return = returnFiber;
+      return existing;
+    }
+  }
+
+  function updateElement(returnFiber, current, element, expirationTime) {
+    if (current !== null) {
+      if (current.elementType === element.type || ( // Keep this check inline so it only runs on the false path:
+       isCompatibleFamilyForHotReloading(current, element) )) {
+        // Move based on index
+        var existing = useFiber(current, element.props);
+        existing.ref = coerceRef(returnFiber, current, element);
+        existing.return = returnFiber;
+
+        {
+          existing._debugSource = element._source;
+          existing._debugOwner = element._owner;
+        }
+
+        return existing;
+      }
+    } // Insert
+
+
+    var created = createFiberFromElement(element, returnFiber.mode, expirationTime);
+    created.ref = coerceRef(returnFiber, current, element);
+    created.return = returnFiber;
+    return created;
+  }
+
+  function updatePortal(returnFiber, current, portal, expirationTime) {
+    if (current === null || current.tag !== HostPortal || current.stateNode.containerInfo !== portal.containerInfo || current.stateNode.implementation !== portal.implementation) {
+      // Insert
+      var created = createFiberFromPortal(portal, returnFiber.mode, expirationTime);
+      created.return = returnFiber;
+      return created;
+    } else {
+      // Update
+      var existing = useFiber(current, portal.children || []);
+      existing.return = returnFiber;
+      return existing;
+    }
+  }
+
+  function updateFragment(returnFiber, current, fragment, expirationTime, key) {
+    if (current === null || current.tag !== Fragment) {
+      // Insert
+      var created = createFiberFromFragment(fragment, returnFiber.mode, expirationTime, key);
+      created.return = returnFiber;
+      return created;
+    } else {
+      // Update
+      var existing = useFiber(current, fragment);
+      existing.return = returnFiber;
+      return existing;
+    }
+  }
+
+  function createChild(returnFiber, newChild, expirationTime) {
+    if (typeof newChild === 'string' || typeof newChild === 'number') {
+      // Text nodes don't have keys. If the previous node is implicitly keyed
+      // we can continue to replace it without aborting even if it is not a text
+      // node.
+      var created = createFiberFromText('' + newChild, returnFiber.mode, expirationTime);
+      created.return = returnFiber;
+      return created;
+    }
+
+    if (typeof newChild === 'object' && newChild !== null) {
+      switch (newChild.$$typeof) {
+        case REACT_ELEMENT_TYPE:
+          {
+            var _created = createFiberFromElement(newChild, returnFiber.mode, expirationTime);
+
+            _created.ref = coerceRef(returnFiber, null, newChild);
+            _created.return = returnFiber;
+            return _created;
+          }
+
+        case REACT_PORTAL_TYPE:
+          {
+            var _created2 = createFiberFromPortal(newChild, returnFiber.mode, expirationTime);
+
+            _created2.return = returnFiber;
+            return _created2;
+          }
+      }
+
+      if (isArray$1(newChild) || getIteratorFn(newChild)) {
+        var _created3 = createFiberFromFragment(newChild, returnFiber.mode, expirationTime, null);
+
+        _created3.return = returnFiber;
+        return _created3;
+      }
+
+      throwOnInvalidObjectType(returnFiber, newChild);
+    }
+
+    {
+      if (typeof newChild === 'function') {
+        warnOnFunctionType();
+      }
+    }
+
+    return null;
+  }
+
+  function updateSlot(returnFiber, oldFiber, newChild, expirationTime) {
+    // Update the fiber if the keys match, otherwise return null.
+    var key = oldFiber !== null ? oldFiber.key : null;
+
+    if (typeof newChild === 'string' || typeof newChild === 'number') {
+      // Text nodes don't have keys. If the previous node is implicitly keyed
+      // we can continue to replace it without aborting even if it is not a text
+      // node.
+      if (key !== null) {
+        return null;
+      }
+
+      return updateTextNode(returnFiber, oldFiber, '' + newChild, expirationTime);
+    }
+
+    if (typeof newChild === 'object' && newChild !== null) {
+      switch (newChild.$$typeof) {
+        case REACT_ELEMENT_TYPE:
+          {
+            if (newChild.key === key) {
+              if (newChild.type === REACT_FRAGMENT_TYPE) {
+                return updateFragment(returnFiber, oldFiber, newChild.props.children, expirationTime, key);
+              }
+
+              return updateElement(returnFiber, oldFiber, newChild, expirationTime);
+            } else {
+              return null;
+            }
+          }
+
+        case REACT_PORTAL_TYPE:
+          {
+            if (newChild.key === key) {
+              return updatePortal(returnFiber, oldFiber, newChild, expirationTime);
+            } else {
+              return null;
+            }
+          }
+      }
+
+      if (isArray$1(newChild) || getIteratorFn(newChild)) {
+        if (key !== null) {
+          return null;
+        }
+
+        return updateFragment(returnFiber, oldFiber, newChild, expirationTime, null);
+      }
+
+      throwOnInvalidObjectType(returnFiber, newChild);
+    }
+
+    {
+      if (typeof newChild === 'function') {
+        warnOnFunctionType();
+      }
+    }
+
+    return null;
+  }
+
+  function updateFromMap(existingChildren, returnFiber, newIdx, newChild, expirationTime) {
+    if (typeof newChild === 'string' || typeof newChild === 'number') {
+      // Text nodes don't have keys, so we neither have to check the old nor
+      // new node for the key. If both are text nodes, they match.
+      var matchedFiber = existingChildren.get(newIdx) || null;
+      return updateTextNode(returnFiber, matchedFiber, '' + newChild, expirationTime);
+    }
+
+    if (typeof newChild === 'object' && newChild !== null) {
+      switch (newChild.$$typeof) {
+        case REACT_ELEMENT_TYPE:
+          {
+            var _matchedFiber = existingChildren.get(newChild.key === null ? newIdx : newChild.key) || null;
+
+            if (newChild.type === REACT_FRAGMENT_TYPE) {
+              return updateFragment(returnFiber, _matchedFiber, newChild.props.children, expirationTime, newChild.key);
+            }
+
+            return updateElement(returnFiber, _matchedFiber, newChild, expirationTime);
+          }
+
+        case REACT_PORTAL_TYPE:
+          {
+            var _matchedFiber2 = existingChildren.get(newChild.key === null ? newIdx : newChild.key) || null;
+
+            return updatePortal(returnFiber, _matchedFiber2, newChild, expirationTime);
+          }
+      }
+
+      if (isArray$1(newChild) || getIteratorFn(newChild)) {
+        var _matchedFiber3 = existingChildren.get(newIdx) || null;
+
+        return updateFragment(returnFiber, _matchedFiber3, newChild, expirationTime, null);
+      }
+
+      throwOnInvalidObjectType(returnFiber, newChild);
+    }
+
+    {
+      if (typeof newChild === 'function') {
+        warnOnFunctionType();
+      }
+    }
+
+    return null;
+  }
+  /**
+   * Warns if there is a duplicate or missing key
+   */
+
+
+  function warnOnInvalidKey(child, knownKeys) {
+    {
+      if (typeof child !== 'object' || child === null) {
+        return knownKeys;
+      }
+
+      switch (child.$$typeof) {
+        case REACT_ELEMENT_TYPE:
+        case REACT_PORTAL_TYPE:
+          warnForMissingKey(child);
+          var key = child.key;
+
+          if (typeof key !== 'string') {
+            break;
+          }
+
+          if (knownKeys === null) {
+            knownKeys = new Set();
+            knownKeys.add(key);
+            break;
+          }
+
+          if (!knownKeys.has(key)) {
+            knownKeys.add(key);
+            break;
+          }
+
+          error('Encountered two children with the same key, `%s`. ' + 'Keys should be unique so that components maintain their identity ' + 'across updates. Non-unique keys may cause children to be ' + 'duplicated and/or omitted — the behavior is unsupported and ' + 'could change in a future version.', key);
+
+          break;
+      }
+    }
+
+    return knownKeys;
+  }
+
+  function reconcileChildrenArray(returnFiber, currentFirstChild, newChildren, expirationTime) {
+    // This algorithm can't optimize by searching from both ends since we
+    // don't have backpointers on fibers. I'm trying to see how far we can get
+    // with that model. If it ends up not being worth the tradeoffs, we can
+    // add it later.
+    // Even with a two ended optimization, we'd want to optimize for the case
+    // where there are few changes and brute force the comparison instead of
+    // going for the Map. It'd like to explore hitting that path first in
+    // forward-only mode and only go for the Map once we notice that we need
+    // lots of look ahead. This doesn't handle reversal as well as two ended
+    // search but that's unusual. Besides, for the two ended optimization to
+    // work on Iterables, we'd need to copy the whole set.
+    // In this first iteration, we'll just live with hitting the bad case
+    // (adding everything to a Map) in for every insert/move.
+    // If you change this code, also update reconcileChildrenIterator() which
+    // uses the same algorithm.
+    {
+      // First, validate keys.
+      var knownKeys = null;
+
+      for (var i = 0; i < newChildren.length; i++) {
+        var child = newChildren[i];
+        knownKeys = warnOnInvalidKey(child, knownKeys);
+      }
+    }
+
+    var resultingFirstChild = null;
+    var previousNewFiber = null;
+    var oldFiber = currentFirstChild;
+    var lastPlacedIndex = 0;
+    var newIdx = 0;
+    var nextOldFiber = null;
+
+    for (; oldFiber !== null && newIdx < newChildren.length; newIdx++) {
+      if (oldFiber.index > newIdx) {
+        nextOldFiber = oldFiber;
+        oldFiber = null;
+      } else {
+        nextOldFiber = oldFiber.sibling;
+      }
+
+      var newFiber = updateSlot(returnFiber, oldFiber, newChildren[newIdx], expirationTime);
+
+      if (newFiber === null) {
+        // TODO: This breaks on empty slots like null children. That's
+        // unfortunate because it triggers the slow path all the time. We need
+        // a better way to communicate whether this was a miss or null,
+        // boolean, undefined, etc.
+        if (oldFiber === null) {
+          oldFiber = nextOldFiber;
+        }
+
+        break;
+      }
+
+      if (shouldTrackSideEffects) {
+        if (oldFiber && newFiber.alternate === null) {
+          // We matched the slot, but we didn't reuse the existing fiber, so we
+          // need to delete the existing child.
+          deleteChild(returnFiber, oldFiber);
+        }
+      }
+
+      lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx);
+
+      if (previousNewFiber === null) {
+        // TODO: Move out of the loop. This only happens for the first run.
+        resultingFirstChild = newFiber;
+      } else {
+        // TODO: Defer siblings if we're not at the right index for this slot.
+        // I.e. if we had null values before, then we want to defer this
+        // for each null value. However, we also don't want to call updateSlot
+        // with the previous one.
+        previousNewFiber.sibling = newFiber;
+      }
+
+      previousNewFiber = newFiber;
+      oldFiber = nextOldFiber;
+    }
+
+    if (newIdx === newChildren.length) {
+      // We've reached the end of the new children. We can delete the rest.
+      deleteRemainingChildren(returnFiber, oldFiber);
+      return resultingFirstChild;
+    }
+
+    if (oldFiber === null) {
+      // If we don't have any more existing children we can choose a fast path
+      // since the rest will all be insertions.
+      for (; newIdx < newChildren.length; newIdx++) {
+        var _newFiber = createChild(returnFiber, newChildren[newIdx], expirationTime);
+
+        if (_newFiber === null) {
+          continue;
+        }
+
+        lastPlacedIndex = placeChild(_newFiber, lastPlacedIndex, newIdx);
+
+        if (previousNewFiber === null) {
+          // TODO: Move out of the loop. This only happens for the first run.
+          resultingFirstChild = _newFiber;
+        } else {
+          previousNewFiber.sibling = _newFiber;
+        }
+
+        previousNewFiber = _newFiber;
+      }
+
+      return resultingFirstChild;
+    } // Add all children to a key map for quick lookups.
+
+
+    var existingChildren = mapRemainingChildren(returnFiber, oldFiber); // Keep scanning and use the map to restore deleted items as moves.
+
+    for (; newIdx < newChildren.length; newIdx++) {
+      var _newFiber2 = updateFromMap(existingChildren, returnFiber, newIdx, newChildren[newIdx], expirationTime);
+
+      if (_newFiber2 !== null) {
+        if (shouldTrackSideEffects) {
+          if (_newFiber2.alternate !== null) {
+            // The new fiber is a work in progress, but if there exists a
+            // current, that means that we reused the fiber. We need to delete
+            // it from the child list so that we don't add it to the deletion
+            // list.
+            existingChildren.delete(_newFiber2.key === null ? newIdx : _newFiber2.key);
+          }
+        }
+
+        lastPlacedIndex = placeChild(_newFiber2, lastPlacedIndex, newIdx);
+
+        if (previousNewFiber === null) {
+          resultingFirstChild = _newFiber2;
+        } else {
+          previousNewFiber.sibling = _newFiber2;
+        }
+
+        previousNewFiber = _newFiber2;
+      }
+    }
+
+    if (shouldTrackSideEffects) {
+      // Any existing children that weren't consumed above were deleted. We need
+      // to add them to the deletion list.
+      existingChildren.forEach(function (child) {
+        return deleteChild(returnFiber, child);
+      });
+    }
+
+    return resultingFirstChild;
+  }
+
+  function reconcileChildrenIterator(returnFiber, currentFirstChild, newChildrenIterable, expirationTime) {
+    // This is the same implementation as reconcileChildrenArray(),
+    // but using the iterator instead.
+    var iteratorFn = getIteratorFn(newChildrenIterable);
+
+    if (!(typeof iteratorFn === 'function')) {
+      {
+        throw Error( "An object is not an iterable. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+
+    {
+      // We don't support rendering Generators because it's a mutation.
+      // See https://github.com/facebook/react/issues/12995
+      if (typeof Symbol === 'function' && // $FlowFixMe Flow doesn't know about toStringTag
+      newChildrenIterable[Symbol.toStringTag] === 'Generator') {
+        if (!didWarnAboutGenerators) {
+          error('Using Generators as children is unsupported and will likely yield ' + 'unexpected results because enumerating a generator mutates it. ' + 'You may convert it to an array with `Array.from()` or the ' + '`[...spread]` operator before rendering. Keep in mind ' + 'you might need to polyfill these features for older browsers.');
+        }
+
+        didWarnAboutGenerators = true;
+      } // Warn about using Maps as children
+
+
+      if (newChildrenIterable.entries === iteratorFn) {
+        if (!didWarnAboutMaps) {
+          error('Using Maps as children is unsupported and will likely yield ' + 'unexpected results. Convert it to a sequence/iterable of keyed ' + 'ReactElements instead.');
+        }
+
+        didWarnAboutMaps = true;
+      } // First, validate keys.
+      // We'll get a different iterator later for the main pass.
+
+
+      var _newChildren = iteratorFn.call(newChildrenIterable);
+
+      if (_newChildren) {
+        var knownKeys = null;
+
+        var _step = _newChildren.next();
+
+        for (; !_step.done; _step = _newChildren.next()) {
+          var child = _step.value;
+          knownKeys = warnOnInvalidKey(child, knownKeys);
+        }
+      }
+    }
+
+    var newChildren = iteratorFn.call(newChildrenIterable);
+
+    if (!(newChildren != null)) {
+      {
+        throw Error( "An iterable object provided no iterator." );
+      }
+    }
+
+    var resultingFirstChild = null;
+    var previousNewFiber = null;
+    var oldFiber = currentFirstChild;
+    var lastPlacedIndex = 0;
+    var newIdx = 0;
+    var nextOldFiber = null;
+    var step = newChildren.next();
+
+    for (; oldFiber !== null && !step.done; newIdx++, step = newChildren.next()) {
+      if (oldFiber.index > newIdx) {
+        nextOldFiber = oldFiber;
+        oldFiber = null;
+      } else {
+        nextOldFiber = oldFiber.sibling;
+      }
+
+      var newFiber = updateSlot(returnFiber, oldFiber, step.value, expirationTime);
+
+      if (newFiber === null) {
+        // TODO: This breaks on empty slots like null children. That's
+        // unfortunate because it triggers the slow path all the time. We need
+        // a better way to communicate whether this was a miss or null,
+        // boolean, undefined, etc.
+        if (oldFiber === null) {
+          oldFiber = nextOldFiber;
+        }
+
+        break;
+      }
+
+      if (shouldTrackSideEffects) {
+        if (oldFiber && newFiber.alternate === null) {
+          // We matched the slot, but we didn't reuse the existing fiber, so we
+          // need to delete the existing child.
+          deleteChild(returnFiber, oldFiber);
+        }
+      }
+
+      lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx);
+
+      if (previousNewFiber === null) {
+        // TODO: Move out of the loop. This only happens for the first run.
+        resultingFirstChild = newFiber;
+      } else {
+        // TODO: Defer siblings if we're not at the right index for this slot.
+        // I.e. if we had null values before, then we want to defer this
+        // for each null value. However, we also don't want to call updateSlot
+        // with the previous one.
+        previousNewFiber.sibling = newFiber;
+      }
+
+      previousNewFiber = newFiber;
+      oldFiber = nextOldFiber;
+    }
+
+    if (step.done) {
+      // We've reached the end of the new children. We can delete the rest.
+      deleteRemainingChildren(returnFiber, oldFiber);
+      return resultingFirstChild;
+    }
+
+    if (oldFiber === null) {
+      // If we don't have any more existing children we can choose a fast path
+      // since the rest will all be insertions.
+      for (; !step.done; newIdx++, step = newChildren.next()) {
+        var _newFiber3 = createChild(returnFiber, step.value, expirationTime);
+
+        if (_newFiber3 === null) {
+          continue;
+        }
+
+        lastPlacedIndex = placeChild(_newFiber3, lastPlacedIndex, newIdx);
+
+        if (previousNewFiber === null) {
+          // TODO: Move out of the loop. This only happens for the first run.
+          resultingFirstChild = _newFiber3;
+        } else {
+          previousNewFiber.sibling = _newFiber3;
+        }
+
+        previousNewFiber = _newFiber3;
+      }
+
+      return resultingFirstChild;
+    } // Add all children to a key map for quick lookups.
+
+
+    var existingChildren = mapRemainingChildren(returnFiber, oldFiber); // Keep scanning and use the map to restore deleted items as moves.
+
+    for (; !step.done; newIdx++, step = newChildren.next()) {
+      var _newFiber4 = updateFromMap(existingChildren, returnFiber, newIdx, step.value, expirationTime);
+
+      if (_newFiber4 !== null) {
+        if (shouldTrackSideEffects) {
+          if (_newFiber4.alternate !== null) {
+            // The new fiber is a work in progress, but if there exists a
+            // current, that means that we reused the fiber. We need to delete
+            // it from the child list so that we don't add it to the deletion
+            // list.
+            existingChildren.delete(_newFiber4.key === null ? newIdx : _newFiber4.key);
+          }
+        }
+
+        lastPlacedIndex = placeChild(_newFiber4, lastPlacedIndex, newIdx);
+
+        if (previousNewFiber === null) {
+          resultingFirstChild = _newFiber4;
+        } else {
+          previousNewFiber.sibling = _newFiber4;
+        }
+
+        previousNewFiber = _newFiber4;
+      }
+    }
+
+    if (shouldTrackSideEffects) {
+      // Any existing children that weren't consumed above were deleted. We need
+      // to add them to the deletion list.
+      existingChildren.forEach(function (child) {
+        return deleteChild(returnFiber, child);
+      });
+    }
+
+    return resultingFirstChild;
+  }
+
+  function reconcileSingleTextNode(returnFiber, currentFirstChild, textContent, expirationTime) {
+    // There's no need to check for keys on text nodes since we don't have a
+    // way to define them.
+    if (currentFirstChild !== null && currentFirstChild.tag === HostText) {
+      // We already have an existing node so let's just update it and delete
+      // the rest.
+      deleteRemainingChildren(returnFiber, currentFirstChild.sibling);
+      var existing = useFiber(currentFirstChild, textContent);
+      existing.return = returnFiber;
+      return existing;
+    } // The existing first child is not a text node so we need to create one
+    // and delete the existing ones.
+
+
+    deleteRemainingChildren(returnFiber, currentFirstChild);
+    var created = createFiberFromText(textContent, returnFiber.mode, expirationTime);
+    created.return = returnFiber;
+    return created;
+  }
+
+  function reconcileSingleElement(returnFiber, currentFirstChild, element, expirationTime) {
+    var key = element.key;
+    var child = currentFirstChild;
+
+    while (child !== null) {
+      // TODO: If key === null and child.key === null, then this only applies to
+      // the first item in the list.
+      if (child.key === key) {
+        switch (child.tag) {
+          case Fragment:
+            {
+              if (element.type === REACT_FRAGMENT_TYPE) {
+                deleteRemainingChildren(returnFiber, child.sibling);
+                var existing = useFiber(child, element.props.children);
+                existing.return = returnFiber;
+
+                {
+                  existing._debugSource = element._source;
+                  existing._debugOwner = element._owner;
+                }
+
+                return existing;
+              }
+
+              break;
+            }
+
+          case Block:
+
+          // We intentionally fallthrough here if enableBlocksAPI is not on.
+          // eslint-disable-next-lined no-fallthrough
+
+          default:
+            {
+              if (child.elementType === element.type || ( // Keep this check inline so it only runs on the false path:
+               isCompatibleFamilyForHotReloading(child, element) )) {
+                deleteRemainingChildren(returnFiber, child.sibling);
+
+                var _existing3 = useFiber(child, element.props);
+
+                _existing3.ref = coerceRef(returnFiber, child, element);
+                _existing3.return = returnFiber;
+
+                {
+                  _existing3._debugSource = element._source;
+                  _existing3._debugOwner = element._owner;
+                }
+
+                return _existing3;
+              }
+
+              break;
+            }
+        } // Didn't match.
+
+
+        deleteRemainingChildren(returnFiber, child);
+        break;
+      } else {
+        deleteChild(returnFiber, child);
+      }
+
+      child = child.sibling;
+    }
+
+    if (element.type === REACT_FRAGMENT_TYPE) {
+      var created = createFiberFromFragment(element.props.children, returnFiber.mode, expirationTime, element.key);
+      created.return = returnFiber;
+      return created;
+    } else {
+      var _created4 = createFiberFromElement(element, returnFiber.mode, expirationTime);
+
+      _created4.ref = coerceRef(returnFiber, currentFirstChild, element);
+      _created4.return = returnFiber;
+      return _created4;
+    }
+  }
+
+  function reconcileSinglePortal(returnFiber, currentFirstChild, portal, expirationTime) {
+    var key = portal.key;
+    var child = currentFirstChild;
+
+    while (child !== null) {
+      // TODO: If key === null and child.key === null, then this only applies to
+      // the first item in the list.
+      if (child.key === key) {
+        if (child.tag === HostPortal && child.stateNode.containerInfo === portal.containerInfo && child.stateNode.implementation === portal.implementation) {
+          deleteRemainingChildren(returnFiber, child.sibling);
+          var existing = useFiber(child, portal.children || []);
+          existing.return = returnFiber;
+          return existing;
+        } else {
+          deleteRemainingChildren(returnFiber, child);
+          break;
+        }
+      } else {
+        deleteChild(returnFiber, child);
+      }
+
+      child = child.sibling;
+    }
+
+    var created = createFiberFromPortal(portal, returnFiber.mode, expirationTime);
+    created.return = returnFiber;
+    return created;
+  } // This API will tag the children with the side-effect of the reconciliation
+  // itself. They will be added to the side-effect list as we pass through the
+  // children and the parent.
+
+
+  function reconcileChildFibers(returnFiber, currentFirstChild, newChild, expirationTime) {
+    // This function is not recursive.
+    // If the top level item is an array, we treat it as a set of children,
+    // not as a fragment. Nested arrays on the other hand will be treated as
+    // fragment nodes. Recursion happens at the normal flow.
+    // Handle top level unkeyed fragments as if they were arrays.
+    // This leads to an ambiguity between <>{[...]}</> and <>...</>.
+    // We treat the ambiguous cases above the same.
+    var isUnkeyedTopLevelFragment = typeof newChild === 'object' && newChild !== null && newChild.type === REACT_FRAGMENT_TYPE && newChild.key === null;
+
+    if (isUnkeyedTopLevelFragment) {
+      newChild = newChild.props.children;
+    } // Handle object types
+
+
+    var isObject = typeof newChild === 'object' && newChild !== null;
+
+    if (isObject) {
+      switch (newChild.$$typeof) {
+        case REACT_ELEMENT_TYPE:
+          return placeSingleChild(reconcileSingleElement(returnFiber, currentFirstChild, newChild, expirationTime));
+
+        case REACT_PORTAL_TYPE:
+          return placeSingleChild(reconcileSinglePortal(returnFiber, currentFirstChild, newChild, expirationTime));
+      }
+    }
+
+    if (typeof newChild === 'string' || typeof newChild === 'number') {
+      return placeSingleChild(reconcileSingleTextNode(returnFiber, currentFirstChild, '' + newChild, expirationTime));
+    }
+
+    if (isArray$1(newChild)) {
+      return reconcileChildrenArray(returnFiber, currentFirstChild, newChild, expirationTime);
+    }
+
+    if (getIteratorFn(newChild)) {
+      return reconcileChildrenIterator(returnFiber, currentFirstChild, newChild, expirationTime);
+    }
+
+    if (isObject) {
+      throwOnInvalidObjectType(returnFiber, newChild);
+    }
+
+    {
+      if (typeof newChild === 'function') {
+        warnOnFunctionType();
+      }
+    }
+
+    if (typeof newChild === 'undefined' && !isUnkeyedTopLevelFragment) {
+      // If the new child is undefined, and the return fiber is a composite
+      // component, throw an error. If Fiber return types are disabled,
+      // we already threw above.
+      switch (returnFiber.tag) {
+        case ClassComponent:
+          {
+            {
+              var instance = returnFiber.stateNode;
+
+              if (instance.render._isMockFunction) {
+                // We allow auto-mocks to proceed as if they're returning null.
+                break;
+              }
+            }
+          }
+        // Intentionally fall through to the next case, which handles both
+        // functions and classes
+        // eslint-disable-next-lined no-fallthrough
+
+        case FunctionComponent:
+          {
+            var Component = returnFiber.type;
+
+            {
+              {
+                throw Error( (Component.displayName || Component.name || 'Component') + "(...): Nothing was returned from render. This usually means a return statement is missing. Or, to render nothing, return null." );
+              }
+            }
+          }
+      }
+    } // Remaining cases are all treated as empty.
+
+
+    return deleteRemainingChildren(returnFiber, currentFirstChild);
+  }
+
+  return reconcileChildFibers;
+}
+
+var reconcileChildFibers = ChildReconciler(true);
+var mountChildFibers = ChildReconciler(false);
+function cloneChildFibers(current, workInProgress) {
+  if (!(current === null || workInProgress.child === current.child)) {
+    {
+      throw Error( "Resuming work not yet implemented." );
+    }
+  }
+
+  if (workInProgress.child === null) {
+    return;
+  }
+
+  var currentChild = workInProgress.child;
+  var newChild = createWorkInProgress(currentChild, currentChild.pendingProps);
+  workInProgress.child = newChild;
+  newChild.return = workInProgress;
+
+  while (currentChild.sibling !== null) {
+    currentChild = currentChild.sibling;
+    newChild = newChild.sibling = createWorkInProgress(currentChild, currentChild.pendingProps);
+    newChild.return = workInProgress;
+  }
+
+  newChild.sibling = null;
+} // Reset a workInProgress child set to prepare it for a second pass.
+
+function resetChildFibers(workInProgress, renderExpirationTime) {
+  var child = workInProgress.child;
+
+  while (child !== null) {
+    resetWorkInProgress(child, renderExpirationTime);
+    child = child.sibling;
+  }
+}
+
+var NO_CONTEXT = {};
+var contextStackCursor$1 = createCursor(NO_CONTEXT);
+var contextFiberStackCursor = createCursor(NO_CONTEXT);
+var rootInstanceStackCursor = createCursor(NO_CONTEXT);
+
+function requiredContext(c) {
+  if (!(c !== NO_CONTEXT)) {
+    {
+      throw Error( "Expected host context to exist. This error is likely caused by a bug in React. Please file an issue." );
+    }
+  }
+
+  return c;
+}
+
+function getRootHostContainer() {
+  var rootInstance = requiredContext(rootInstanceStackCursor.current);
+  return rootInstance;
+}
+
+function pushHostContainer(fiber, nextRootInstance) {
+  // Push current root instance onto the stack;
+  // This allows us to reset root when portals are popped.
+  push(rootInstanceStackCursor, nextRootInstance, fiber); // Track the context and the Fiber that provided it.
+  // This enables us to pop only Fibers that provide unique contexts.
+
+  push(contextFiberStackCursor, fiber, fiber); // Finally, we need to push the host context to the stack.
+  // However, we can't just call getRootHostContext() and push it because
+  // we'd have a different number of entries on the stack depending on
+  // whether getRootHostContext() throws somewhere in renderer code or not.
+  // So we push an empty value first. This lets us safely unwind on errors.
+
+  push(contextStackCursor$1, NO_CONTEXT, fiber);
+  var nextRootContext = getRootHostContext(nextRootInstance); // Now that we know this function doesn't throw, replace it.
+
+  pop(contextStackCursor$1, fiber);
+  push(contextStackCursor$1, nextRootContext, fiber);
+}
+
+function popHostContainer(fiber) {
+  pop(contextStackCursor$1, fiber);
+  pop(contextFiberStackCursor, fiber);
+  pop(rootInstanceStackCursor, fiber);
+}
+
+function getHostContext() {
+  var context = requiredContext(contextStackCursor$1.current);
+  return context;
+}
+
+function pushHostContext(fiber) {
+  var rootInstance = requiredContext(rootInstanceStackCursor.current);
+  var context = requiredContext(contextStackCursor$1.current);
+  var nextContext = getChildHostContext(context, fiber.type); // Don't push this Fiber's context unless it's unique.
+
+  if (context === nextContext) {
+    return;
+  } // Track the context and the Fiber that provided it.
+  // This enables us to pop only Fibers that provide unique contexts.
+
+
+  push(contextFiberStackCursor, fiber, fiber);
+  push(contextStackCursor$1, nextContext, fiber);
+}
+
+function popHostContext(fiber) {
+  // Do not pop unless this Fiber provided the current context.
+  // pushHostContext() only pushes Fibers that provide unique contexts.
+  if (contextFiberStackCursor.current !== fiber) {
+    return;
+  }
+
+  pop(contextStackCursor$1, fiber);
+  pop(contextFiberStackCursor, fiber);
+}
+
+var DefaultSuspenseContext = 0; // The Suspense Context is split into two parts. The lower bits is
+// inherited deeply down the subtree. The upper bits only affect
+// this immediate suspense boundary and gets reset each new
+// boundary or suspense list.
+
+var SubtreeSuspenseContextMask = 1; // Subtree Flags:
+// InvisibleParentSuspenseContext indicates that one of our parent Suspense
+// boundaries is not currently showing visible main content.
+// Either because it is already showing a fallback or is not mounted at all.
+// We can use this to determine if it is desirable to trigger a fallback at
+// the parent. If not, then we might need to trigger undesirable boundaries
+// and/or suspend the commit to avoid hiding the parent content.
+
+var InvisibleParentSuspenseContext = 1; // Shallow Flags:
+// ForceSuspenseFallback can be used by SuspenseList to force newly added
+// items into their fallback state during one of the render passes.
+
+var ForceSuspenseFallback = 2;
+var suspenseStackCursor = createCursor(DefaultSuspenseContext);
+function hasSuspenseContext(parentContext, flag) {
+  return (parentContext & flag) !== 0;
+}
+function setDefaultShallowSuspenseContext(parentContext) {
+  return parentContext & SubtreeSuspenseContextMask;
+}
+function setShallowSuspenseContext(parentContext, shallowContext) {
+  return parentContext & SubtreeSuspenseContextMask | shallowContext;
+}
+function addSubtreeSuspenseContext(parentContext, subtreeContext) {
+  return parentContext | subtreeContext;
+}
+function pushSuspenseContext(fiber, newContext) {
+  push(suspenseStackCursor, newContext, fiber);
+}
+function popSuspenseContext(fiber) {
+  pop(suspenseStackCursor, fiber);
+}
+
+function shouldCaptureSuspense(workInProgress, hasInvisibleParent) {
+  // If it was the primary children that just suspended, capture and render the
+  // fallback. Otherwise, don't capture and bubble to the next boundary.
+  var nextState = workInProgress.memoizedState;
+
+  if (nextState !== null) {
+    if (nextState.dehydrated !== null) {
+      // A dehydrated boundary always captures.
+      return true;
+    }
+
+    return false;
+  }
+
+  var props = workInProgress.memoizedProps; // In order to capture, the Suspense component must have a fallback prop.
+
+  if (props.fallback === undefined) {
+    return false;
+  } // Regular boundaries always capture.
+
+
+  if (props.unstable_avoidThisFallback !== true) {
+    return true;
+  } // If it's a boundary we should avoid, then we prefer to bubble up to the
+  // parent boundary if it is currently invisible.
+
+
+  if (hasInvisibleParent) {
+    return false;
+  } // If the parent is not able to handle it, we must handle it.
+
+
+  return true;
+}
+function findFirstSuspended(row) {
+  var node = row;
+
+  while (node !== null) {
+    if (node.tag === SuspenseComponent) {
+      var state = node.memoizedState;
+
+      if (state !== null) {
+        var dehydrated = state.dehydrated;
+
+        if (dehydrated === null || isSuspenseInstancePending(dehydrated) || isSuspenseInstanceFallback(dehydrated)) {
+          return node;
+        }
+      }
+    } else if (node.tag === SuspenseListComponent && // revealOrder undefined can't be trusted because it don't
+    // keep track of whether it suspended or not.
+    node.memoizedProps.revealOrder !== undefined) {
+      var didSuspend = (node.effectTag & DidCapture) !== NoEffect;
+
+      if (didSuspend) {
+        return node;
+      }
+    } else if (node.child !== null) {
+      node.child.return = node;
+      node = node.child;
+      continue;
+    }
+
+    if (node === row) {
+      return null;
+    }
+
+    while (node.sibling === null) {
+      if (node.return === null || node.return === row) {
+        return null;
+      }
+
+      node = node.return;
+    }
+
+    node.sibling.return = node.return;
+    node = node.sibling;
+  }
+
+  return null;
+}
+
+function createDeprecatedResponderListener(responder, props) {
+  var eventResponderListener = {
+    responder: responder,
+    props: props
+  };
+
+  {
+    Object.freeze(eventResponderListener);
+  }
+
+  return eventResponderListener;
+}
+
+var HasEffect =
+/* */
+1; // Represents the phase in which the effect (not the clean-up) fires.
+
+var Layout =
+/*    */
+2;
+var Passive$1 =
+/*   */
+4;
+
+var ReactCurrentDispatcher = ReactSharedInternals.ReactCurrentDispatcher,
+    ReactCurrentBatchConfig$1 = ReactSharedInternals.ReactCurrentBatchConfig;
+var didWarnAboutMismatchedHooksForComponent;
+
+{
+  didWarnAboutMismatchedHooksForComponent = new Set();
+}
+
+// These are set right before calling the component.
+var renderExpirationTime = NoWork; // The work-in-progress fiber. I've named it differently to distinguish it from
+// the work-in-progress hook.
+
+var currentlyRenderingFiber$1 = null; // Hooks are stored as a linked list on the fiber's memoizedState field. The
+// current hook list is the list that belongs to the current fiber. The
+// work-in-progress hook list is a new list that will be added to the
+// work-in-progress fiber.
+
+var currentHook = null;
+var workInProgressHook = null; // Whether an update was scheduled at any point during the render phase. This
+// does not get reset if we do another render pass; only when we're completely
+// finished evaluating this component. This is an optimization so we know
+// whether we need to clear render phase updates after a throw.
+
+var didScheduleRenderPhaseUpdate = false;
+var RE_RENDER_LIMIT = 25; // In DEV, this is the name of the currently executing primitive hook
+
+var currentHookNameInDev = null; // In DEV, this list ensures that hooks are called in the same order between renders.
+// The list stores the order of hooks used during the initial render (mount).
+// Subsequent renders (updates) reference this list.
+
+var hookTypesDev = null;
+var hookTypesUpdateIndexDev = -1; // In DEV, this tracks whether currently rendering component needs to ignore
+// the dependencies for Hooks that need them (e.g. useEffect or useMemo).
+// When true, such Hooks will always be "remounted". Only used during hot reload.
+
+var ignorePreviousDependencies = false;
+
+function mountHookTypesDev() {
+  {
+    var hookName = currentHookNameInDev;
+
+    if (hookTypesDev === null) {
+      hookTypesDev = [hookName];
+    } else {
+      hookTypesDev.push(hookName);
+    }
+  }
+}
+
+function updateHookTypesDev() {
+  {
+    var hookName = currentHookNameInDev;
+
+    if (hookTypesDev !== null) {
+      hookTypesUpdateIndexDev++;
+
+      if (hookTypesDev[hookTypesUpdateIndexDev] !== hookName) {
+        warnOnHookMismatchInDev(hookName);
+      }
+    }
+  }
+}
+
+function checkDepsAreArrayDev(deps) {
+  {
+    if (deps !== undefined && deps !== null && !Array.isArray(deps)) {
+      // Verify deps, but only on mount to avoid extra checks.
+      // It's unlikely their type would change as usually you define them inline.
+      error('%s received a final argument that is not an array (instead, received `%s`). When ' + 'specified, the final argument must be an array.', currentHookNameInDev, typeof deps);
+    }
+  }
+}
+
+function warnOnHookMismatchInDev(currentHookName) {
+  {
+    var componentName = getComponentName(currentlyRenderingFiber$1.type);
+
+    if (!didWarnAboutMismatchedHooksForComponent.has(componentName)) {
+      didWarnAboutMismatchedHooksForComponent.add(componentName);
+
+      if (hookTypesDev !== null) {
+        var table = '';
+        var secondColumnStart = 30;
+
+        for (var i = 0; i <= hookTypesUpdateIndexDev; i++) {
+          var oldHookName = hookTypesDev[i];
+          var newHookName = i === hookTypesUpdateIndexDev ? currentHookName : oldHookName;
+          var row = i + 1 + ". " + oldHookName; // Extra space so second column lines up
+          // lol @ IE not supporting String#repeat
+
+          while (row.length < secondColumnStart) {
+            row += ' ';
+          }
+
+          row += newHookName + '\n';
+          table += row;
+        }
+
+        error('React has detected a change in the order of Hooks called by %s. ' + 'This will lead to bugs and errors if not fixed. ' + 'For more information, read the Rules of Hooks: https://fb.me/rules-of-hooks\n\n' + '   Previous render            Next render\n' + '   ------------------------------------------------------\n' + '%s' + '   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n', componentName, table);
+      }
+    }
+  }
+}
+
+function throwInvalidHookError() {
+  {
+    {
+      throw Error( "Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons:\n1. You might have mismatching versions of React and the renderer (such as React DOM)\n2. You might be breaking the Rules of Hooks\n3. You might have more than one copy of React in the same app\nSee https://fb.me/react-invalid-hook-call for tips about how to debug and fix this problem." );
+    }
+  }
+}
+
+function areHookInputsEqual(nextDeps, prevDeps) {
+  {
+    if (ignorePreviousDependencies) {
+      // Only true when this component is being hot reloaded.
+      return false;
+    }
+  }
+
+  if (prevDeps === null) {
+    {
+      error('%s received a final argument during this render, but not during ' + 'the previous render. Even though the final argument is optional, ' + 'its type cannot change between renders.', currentHookNameInDev);
+    }
+
+    return false;
+  }
+
+  {
+    // Don't bother comparing lengths in prod because these arrays should be
+    // passed inline.
+    if (nextDeps.length !== prevDeps.length) {
+      error('The final argument passed to %s changed size between renders. The ' + 'order and size of this array must remain constant.\n\n' + 'Previous: %s\n' + 'Incoming: %s', currentHookNameInDev, "[" + prevDeps.join(', ') + "]", "[" + nextDeps.join(', ') + "]");
+    }
+  }
+
+  for (var i = 0; i < prevDeps.length && i < nextDeps.length; i++) {
+    if (objectIs(nextDeps[i], prevDeps[i])) {
+      continue;
+    }
+
+    return false;
+  }
+
+  return true;
+}
+
+function renderWithHooks(current, workInProgress, Component, props, secondArg, nextRenderExpirationTime) {
+  renderExpirationTime = nextRenderExpirationTime;
+  currentlyRenderingFiber$1 = workInProgress;
+
+  {
+    hookTypesDev = current !== null ? current._debugHookTypes : null;
+    hookTypesUpdateIndexDev = -1; // Used for hot reloading:
+
+    ignorePreviousDependencies = current !== null && current.type !== workInProgress.type;
+  }
+
+  workInProgress.memoizedState = null;
+  workInProgress.updateQueue = null;
+  workInProgress.expirationTime = NoWork; // The following should have already been reset
+  // currentHook = null;
+  // workInProgressHook = null;
+  // didScheduleRenderPhaseUpdate = false;
+  // TODO Warn if no hooks are used at all during mount, then some are used during update.
+  // Currently we will identify the update render as a mount because memoizedState === null.
+  // This is tricky because it's valid for certain types of components (e.g. React.lazy)
+  // Using memoizedState to differentiate between mount/update only works if at least one stateful hook is used.
+  // Non-stateful hooks (e.g. context) don't get added to memoizedState,
+  // so memoizedState would be null during updates and mounts.
+
+  {
+    if (current !== null && current.memoizedState !== null) {
+      ReactCurrentDispatcher.current = HooksDispatcherOnUpdateInDEV;
+    } else if (hookTypesDev !== null) {
+      // This dispatcher handles an edge case where a component is updating,
+      // but no stateful hooks have been used.
+      // We want to match the production code behavior (which will use HooksDispatcherOnMount),
+      // but with the extra DEV validation to ensure hooks ordering hasn't changed.
+      // This dispatcher does that.
+      ReactCurrentDispatcher.current = HooksDispatcherOnMountWithHookTypesInDEV;
+    } else {
+      ReactCurrentDispatcher.current = HooksDispatcherOnMountInDEV;
+    }
+  }
+
+  var children = Component(props, secondArg); // Check if there was a render phase update
+
+  if (workInProgress.expirationTime === renderExpirationTime) {
+    // Keep rendering in a loop for as long as render phase updates continue to
+    // be scheduled. Use a counter to prevent infinite loops.
+    var numberOfReRenders = 0;
+
+    do {
+      workInProgress.expirationTime = NoWork;
+
+      if (!(numberOfReRenders < RE_RENDER_LIMIT)) {
+        {
+          throw Error( "Too many re-renders. React limits the number of renders to prevent an infinite loop." );
+        }
+      }
+
+      numberOfReRenders += 1;
+
+      {
+        // Even when hot reloading, allow dependencies to stabilize
+        // after first render to prevent infinite render phase updates.
+        ignorePreviousDependencies = false;
+      } // Start over from the beginning of the list
+
+
+      currentHook = null;
+      workInProgressHook = null;
+      workInProgress.updateQueue = null;
+
+      {
+        // Also validate hook order for cascading updates.
+        hookTypesUpdateIndexDev = -1;
+      }
+
+      ReactCurrentDispatcher.current =  HooksDispatcherOnRerenderInDEV ;
+      children = Component(props, secondArg);
+    } while (workInProgress.expirationTime === renderExpirationTime);
+  } // We can assume the previous dispatcher is always this one, since we set it
+  // at the beginning of the render phase and there's no re-entrancy.
+
+
+  ReactCurrentDispatcher.current = ContextOnlyDispatcher;
+
+  {
+    workInProgress._debugHookTypes = hookTypesDev;
+  } // This check uses currentHook so that it works the same in DEV and prod bundles.
+  // hookTypesDev could catch more cases (e.g. context) but only in DEV bundles.
+
+
+  var didRenderTooFewHooks = currentHook !== null && currentHook.next !== null;
+  renderExpirationTime = NoWork;
+  currentlyRenderingFiber$1 = null;
+  currentHook = null;
+  workInProgressHook = null;
+
+  {
+    currentHookNameInDev = null;
+    hookTypesDev = null;
+    hookTypesUpdateIndexDev = -1;
+  }
+
+  didScheduleRenderPhaseUpdate = false;
+
+  if (!!didRenderTooFewHooks) {
+    {
+      throw Error( "Rendered fewer hooks than expected. This may be caused by an accidental early return statement." );
+    }
+  }
+
+  return children;
+}
+function bailoutHooks(current, workInProgress, expirationTime) {
+  workInProgress.updateQueue = current.updateQueue;
+  workInProgress.effectTag &= ~(Passive | Update);
+
+  if (current.expirationTime <= expirationTime) {
+    current.expirationTime = NoWork;
+  }
+}
+function resetHooksAfterThrow() {
+  // We can assume the previous dispatcher is always this one, since we set it
+  // at the beginning of the render phase and there's no re-entrancy.
+  ReactCurrentDispatcher.current = ContextOnlyDispatcher;
+
+  if (didScheduleRenderPhaseUpdate) {
+    // There were render phase updates. These are only valid for this render
+    // phase, which we are now aborting. Remove the updates from the queues so
+    // they do not persist to the next render. Do not remove updates from hooks
+    // that weren't processed.
+    //
+    // Only reset the updates from the queue if it has a clone. If it does
+    // not have a clone, that means it wasn't processed, and the updates were
+    // scheduled before we entered the render phase.
+    var hook = currentlyRenderingFiber$1.memoizedState;
+
+    while (hook !== null) {
+      var queue = hook.queue;
+
+      if (queue !== null) {
+        queue.pending = null;
+      }
+
+      hook = hook.next;
+    }
+  }
+
+  renderExpirationTime = NoWork;
+  currentlyRenderingFiber$1 = null;
+  currentHook = null;
+  workInProgressHook = null;
+
+  {
+    hookTypesDev = null;
+    hookTypesUpdateIndexDev = -1;
+    currentHookNameInDev = null;
+  }
+
+  didScheduleRenderPhaseUpdate = false;
+}
+
+function mountWorkInProgressHook() {
+  var hook = {
+    memoizedState: null,
+    baseState: null,
+    baseQueue: null,
+    queue: null,
+    next: null
+  };
+
+  if (workInProgressHook === null) {
+    // This is the first hook in the list
+    currentlyRenderingFiber$1.memoizedState = workInProgressHook = hook;
+  } else {
+    // Append to the end of the list
+    workInProgressHook = workInProgressHook.next = hook;
+  }
+
+  return workInProgressHook;
+}
+
+function updateWorkInProgressHook() {
+  // This function is used both for updates and for re-renders triggered by a
+  // render phase update. It assumes there is either a current hook we can
+  // clone, or a work-in-progress hook from a previous render pass that we can
+  // use as a base. When we reach the end of the base list, we must switch to
+  // the dispatcher used for mounts.
+  var nextCurrentHook;
+
+  if (currentHook === null) {
+    var current = currentlyRenderingFiber$1.alternate;
+
+    if (current !== null) {
+      nextCurrentHook = current.memoizedState;
+    } else {
+      nextCurrentHook = null;
+    }
+  } else {
+    nextCurrentHook = currentHook.next;
+  }
+
+  var nextWorkInProgressHook;
+
+  if (workInProgressHook === null) {
+    nextWorkInProgressHook = currentlyRenderingFiber$1.memoizedState;
+  } else {
+    nextWorkInProgressHook = workInProgressHook.next;
+  }
+
+  if (nextWorkInProgressHook !== null) {
+    // There's already a work-in-progress. Reuse it.
+    workInProgressHook = nextWorkInProgressHook;
+    nextWorkInProgressHook = workInProgressHook.next;
+    currentHook = nextCurrentHook;
+  } else {
+    // Clone from the current hook.
+    if (!(nextCurrentHook !== null)) {
+      {
+        throw Error( "Rendered more hooks than during the previous render." );
+      }
+    }
+
+    currentHook = nextCurrentHook;
+    var newHook = {
+      memoizedState: currentHook.memoizedState,
+      baseState: currentHook.baseState,
+      baseQueue: currentHook.baseQueue,
+      queue: currentHook.queue,
+      next: null
+    };
+
+    if (workInProgressHook === null) {
+      // This is the first hook in the list.
+      currentlyRenderingFiber$1.memoizedState = workInProgressHook = newHook;
+    } else {
+      // Append to the end of the list.
+      workInProgressHook = workInProgressHook.next = newHook;
+    }
+  }
+
+  return workInProgressHook;
+}
+
+function createFunctionComponentUpdateQueue() {
+  return {
+    lastEffect: null
+  };
+}
+
+function basicStateReducer(state, action) {
+  // $FlowFixMe: Flow doesn't like mixed types
+  return typeof action === 'function' ? action(state) : action;
+}
+
+function mountReducer(reducer, initialArg, init) {
+  var hook = mountWorkInProgressHook();
+  var initialState;
+
+  if (init !== undefined) {
+    initialState = init(initialArg);
+  } else {
+    initialState = initialArg;
+  }
+
+  hook.memoizedState = hook.baseState = initialState;
+  var queue = hook.queue = {
+    pending: null,
+    dispatch: null,
+    lastRenderedReducer: reducer,
+    lastRenderedState: initialState
+  };
+  var dispatch = queue.dispatch = dispatchAction.bind(null, currentlyRenderingFiber$1, queue);
+  return [hook.memoizedState, dispatch];
+}
+
+function updateReducer(reducer, initialArg, init) {
+  var hook = updateWorkInProgressHook();
+  var queue = hook.queue;
+
+  if (!(queue !== null)) {
+    {
+      throw Error( "Should have a queue. This is likely a bug in React. Please file an issue." );
+    }
+  }
+
+  queue.lastRenderedReducer = reducer;
+  var current = currentHook; // The last rebase update that is NOT part of the base state.
+
+  var baseQueue = current.baseQueue; // The last pending update that hasn't been processed yet.
+
+  var pendingQueue = queue.pending;
+
+  if (pendingQueue !== null) {
+    // We have new updates that haven't been processed yet.
+    // We'll add them to the base queue.
+    if (baseQueue !== null) {
+      // Merge the pending queue and the base queue.
+      var baseFirst = baseQueue.next;
+      var pendingFirst = pendingQueue.next;
+      baseQueue.next = pendingFirst;
+      pendingQueue.next = baseFirst;
+    }
+
+    current.baseQueue = baseQueue = pendingQueue;
+    queue.pending = null;
+  }
+
+  if (baseQueue !== null) {
+    // We have a queue to process.
+    var first = baseQueue.next;
+    var newState = current.baseState;
+    var newBaseState = null;
+    var newBaseQueueFirst = null;
+    var newBaseQueueLast = null;
+    var update = first;
+
+    do {
+      var updateExpirationTime = update.expirationTime;
+
+      if (updateExpirationTime < renderExpirationTime) {
+        // Priority is insufficient. Skip this update. If this is the first
+        // skipped update, the previous update/state is the new base
+        // update/state.
+        var clone = {
+          expirationTime: update.expirationTime,
+          suspenseConfig: update.suspenseConfig,
+          action: update.action,
+          eagerReducer: update.eagerReducer,
+          eagerState: update.eagerState,
+          next: null
+        };
+
+        if (newBaseQueueLast === null) {
+          newBaseQueueFirst = newBaseQueueLast = clone;
+          newBaseState = newState;
+        } else {
+          newBaseQueueLast = newBaseQueueLast.next = clone;
+        } // Update the remaining priority in the queue.
+
+
+        if (updateExpirationTime > currentlyRenderingFiber$1.expirationTime) {
+          currentlyRenderingFiber$1.expirationTime = updateExpirationTime;
+          markUnprocessedUpdateTime(updateExpirationTime);
+        }
+      } else {
+        // This update does have sufficient priority.
+        if (newBaseQueueLast !== null) {
+          var _clone = {
+            expirationTime: Sync,
+            // This update is going to be committed so we never want uncommit it.
+            suspenseConfig: update.suspenseConfig,
+            action: update.action,
+            eagerReducer: update.eagerReducer,
+            eagerState: update.eagerState,
+            next: null
+          };
+          newBaseQueueLast = newBaseQueueLast.next = _clone;
+        } // Mark the event time of this update as relevant to this render pass.
+        // TODO: This should ideally use the true event time of this update rather than
+        // its priority which is a derived and not reverseable value.
+        // TODO: We should skip this update if it was already committed but currently
+        // we have no way of detecting the difference between a committed and suspended
+        // update here.
+
+
+        markRenderEventTimeAndConfig(updateExpirationTime, update.suspenseConfig); // Process this update.
+
+        if (update.eagerReducer === reducer) {
+          // If this update was processed eagerly, and its reducer matches the
+          // current reducer, we can use the eagerly computed state.
+          newState = update.eagerState;
+        } else {
+          var action = update.action;
+          newState = reducer(newState, action);
+        }
+      }
+
+      update = update.next;
+    } while (update !== null && update !== first);
+
+    if (newBaseQueueLast === null) {
+      newBaseState = newState;
+    } else {
+      newBaseQueueLast.next = newBaseQueueFirst;
+    } // Mark that the fiber performed work, but only if the new state is
+    // different from the current state.
+
+
+    if (!objectIs(newState, hook.memoizedState)) {
+      markWorkInProgressReceivedUpdate();
+    }
+
+    hook.memoizedState = newState;
+    hook.baseState = newBaseState;
+    hook.baseQueue = newBaseQueueLast;
+    queue.lastRenderedState = newState;
+  }
+
+  var dispatch = queue.dispatch;
+  return [hook.memoizedState, dispatch];
+}
+
+function rerenderReducer(reducer, initialArg, init) {
+  var hook = updateWorkInProgressHook();
+  var queue = hook.queue;
+
+  if (!(queue !== null)) {
+    {
+      throw Error( "Should have a queue. This is likely a bug in React. Please file an issue." );
+    }
+  }
+
+  queue.lastRenderedReducer = reducer; // This is a re-render. Apply the new render phase updates to the previous
+  // work-in-progress hook.
+
+  var dispatch = queue.dispatch;
+  var lastRenderPhaseUpdate = queue.pending;
+  var newState = hook.memoizedState;
+
+  if (lastRenderPhaseUpdate !== null) {
+    // The queue doesn't persist past this render pass.
+    queue.pending = null;
+    var firstRenderPhaseUpdate = lastRenderPhaseUpdate.next;
+    var update = firstRenderPhaseUpdate;
+
+    do {
+      // Process this render phase update. We don't have to check the
+      // priority because it will always be the same as the current
+      // render's.
+      var action = update.action;
+      newState = reducer(newState, action);
+      update = update.next;
+    } while (update !== firstRenderPhaseUpdate); // Mark that the fiber performed work, but only if the new state is
+    // different from the current state.
+
+
+    if (!objectIs(newState, hook.memoizedState)) {
+      markWorkInProgressReceivedUpdate();
+    }
+
+    hook.memoizedState = newState; // Don't persist the state accumulated from the render phase updates to
+    // the base state unless the queue is empty.
+    // TODO: Not sure if this is the desired semantics, but it's what we
+    // do for gDSFP. I can't remember why.
+
+    if (hook.baseQueue === null) {
+      hook.baseState = newState;
+    }
+
+    queue.lastRenderedState = newState;
+  }
+
+  return [newState, dispatch];
+}
+
+function mountState(initialState) {
+  var hook = mountWorkInProgressHook();
+
+  if (typeof initialState === 'function') {
+    // $FlowFixMe: Flow doesn't like mixed types
+    initialState = initialState();
+  }
+
+  hook.memoizedState = hook.baseState = initialState;
+  var queue = hook.queue = {
+    pending: null,
+    dispatch: null,
+    lastRenderedReducer: basicStateReducer,
+    lastRenderedState: initialState
+  };
+  var dispatch = queue.dispatch = dispatchAction.bind(null, currentlyRenderingFiber$1, queue);
+  return [hook.memoizedState, dispatch];
+}
+
+function updateState(initialState) {
+  return updateReducer(basicStateReducer);
+}
+
+function rerenderState(initialState) {
+  return rerenderReducer(basicStateReducer);
+}
+
+function pushEffect(tag, create, destroy, deps) {
+  var effect = {
+    tag: tag,
+    create: create,
+    destroy: destroy,
+    deps: deps,
+    // Circular
+    next: null
+  };
+  var componentUpdateQueue = currentlyRenderingFiber$1.updateQueue;
+
+  if (componentUpdateQueue === null) {
+    componentUpdateQueue = createFunctionComponentUpdateQueue();
+    currentlyRenderingFiber$1.updateQueue = componentUpdateQueue;
+    componentUpdateQueue.lastEffect = effect.next = effect;
+  } else {
+    var lastEffect = componentUpdateQueue.lastEffect;
+
+    if (lastEffect === null) {
+      componentUpdateQueue.lastEffect = effect.next = effect;
+    } else {
+      var firstEffect = lastEffect.next;
+      lastEffect.next = effect;
+      effect.next = firstEffect;
+      componentUpdateQueue.lastEffect = effect;
+    }
+  }
+
+  return effect;
+}
+
+function mountRef(initialValue) {
+  var hook = mountWorkInProgressHook();
+  var ref = {
+    current: initialValue
+  };
+
+  {
+    Object.seal(ref);
+  }
+
+  hook.memoizedState = ref;
+  return ref;
+}
+
+function updateRef(initialValue) {
+  var hook = updateWorkInProgressHook();
+  return hook.memoizedState;
+}
+
+function mountEffectImpl(fiberEffectTag, hookEffectTag, create, deps) {
+  var hook = mountWorkInProgressHook();
+  var nextDeps = deps === undefined ? null : deps;
+  currentlyRenderingFiber$1.effectTag |= fiberEffectTag;
+  hook.memoizedState = pushEffect(HasEffect | hookEffectTag, create, undefined, nextDeps);
+}
+
+function updateEffectImpl(fiberEffectTag, hookEffectTag, create, deps) {
+  var hook = updateWorkInProgressHook();
+  var nextDeps = deps === undefined ? null : deps;
+  var destroy = undefined;
+
+  if (currentHook !== null) {
+    var prevEffect = currentHook.memoizedState;
+    destroy = prevEffect.destroy;
+
+    if (nextDeps !== null) {
+      var prevDeps = prevEffect.deps;
+
+      if (areHookInputsEqual(nextDeps, prevDeps)) {
+        pushEffect(hookEffectTag, create, destroy, nextDeps);
+        return;
+      }
+    }
+  }
+
+  currentlyRenderingFiber$1.effectTag |= fiberEffectTag;
+  hook.memoizedState = pushEffect(HasEffect | hookEffectTag, create, destroy, nextDeps);
+}
+
+function mountEffect(create, deps) {
+  {
+    // $FlowExpectedError - jest isn't a global, and isn't recognized outside of tests
+    if ('undefined' !== typeof jest) {
+      warnIfNotCurrentlyActingEffectsInDEV(currentlyRenderingFiber$1);
+    }
+  }
+
+  return mountEffectImpl(Update | Passive, Passive$1, create, deps);
+}
+
+function updateEffect(create, deps) {
+  {
+    // $FlowExpectedError - jest isn't a global, and isn't recognized outside of tests
+    if ('undefined' !== typeof jest) {
+      warnIfNotCurrentlyActingEffectsInDEV(currentlyRenderingFiber$1);
+    }
+  }
+
+  return updateEffectImpl(Update | Passive, Passive$1, create, deps);
+}
+
+function mountLayoutEffect(create, deps) {
+  return mountEffectImpl(Update, Layout, create, deps);
+}
+
+function updateLayoutEffect(create, deps) {
+  return updateEffectImpl(Update, Layout, create, deps);
+}
+
+function imperativeHandleEffect(create, ref) {
+  if (typeof ref === 'function') {
+    var refCallback = ref;
+
+    var _inst = create();
+
+    refCallback(_inst);
+    return function () {
+      refCallback(null);
+    };
+  } else if (ref !== null && ref !== undefined) {
+    var refObject = ref;
+
+    {
+      if (!refObject.hasOwnProperty('current')) {
+        error('Expected useImperativeHandle() first argument to either be a ' + 'ref callback or React.createRef() object. Instead received: %s.', 'an object with keys {' + Object.keys(refObject).join(', ') + '}');
+      }
+    }
+
+    var _inst2 = create();
+
+    refObject.current = _inst2;
+    return function () {
+      refObject.current = null;
+    };
+  }
+}
+
+function mountImperativeHandle(ref, create, deps) {
+  {
+    if (typeof create !== 'function') {
+      error('Expected useImperativeHandle() second argument to be a function ' + 'that creates a handle. Instead received: %s.', create !== null ? typeof create : 'null');
+    }
+  } // TODO: If deps are provided, should we skip comparing the ref itself?
+
+
+  var effectDeps = deps !== null && deps !== undefined ? deps.concat([ref]) : null;
+  return mountEffectImpl(Update, Layout, imperativeHandleEffect.bind(null, create, ref), effectDeps);
+}
+
+function updateImperativeHandle(ref, create, deps) {
+  {
+    if (typeof create !== 'function') {
+      error('Expected useImperativeHandle() second argument to be a function ' + 'that creates a handle. Instead received: %s.', create !== null ? typeof create : 'null');
+    }
+  } // TODO: If deps are provided, should we skip comparing the ref itself?
+
+
+  var effectDeps = deps !== null && deps !== undefined ? deps.concat([ref]) : null;
+  return updateEffectImpl(Update, Layout, imperativeHandleEffect.bind(null, create, ref), effectDeps);
+}
+
+function mountDebugValue(value, formatterFn) {// This hook is normally a no-op.
+  // The react-debug-hooks package injects its own implementation
+  // so that e.g. DevTools can display custom hook values.
+}
+
+var updateDebugValue = mountDebugValue;
+
+function mountCallback(callback, deps) {
+  var hook = mountWorkInProgressHook();
+  var nextDeps = deps === undefined ? null : deps;
+  hook.memoizedState = [callback, nextDeps];
+  return callback;
+}
+
+function updateCallback(callback, deps) {
+  var hook = updateWorkInProgressHook();
+  var nextDeps = deps === undefined ? null : deps;
+  var prevState = hook.memoizedState;
+
+  if (prevState !== null) {
+    if (nextDeps !== null) {
+      var prevDeps = prevState[1];
+
+      if (areHookInputsEqual(nextDeps, prevDeps)) {
+        return prevState[0];
+      }
+    }
+  }
+
+  hook.memoizedState = [callback, nextDeps];
+  return callback;
+}
+
+function mountMemo(nextCreate, deps) {
+  var hook = mountWorkInProgressHook();
+  var nextDeps = deps === undefined ? null : deps;
+  var nextValue = nextCreate();
+  hook.memoizedState = [nextValue, nextDeps];
+  return nextValue;
+}
+
+function updateMemo(nextCreate, deps) {
+  var hook = updateWorkInProgressHook();
+  var nextDeps = deps === undefined ? null : deps;
+  var prevState = hook.memoizedState;
+
+  if (prevState !== null) {
+    // Assume these are defined. If they're not, areHookInputsEqual will warn.
+    if (nextDeps !== null) {
+      var prevDeps = prevState[1];
+
+      if (areHookInputsEqual(nextDeps, prevDeps)) {
+        return prevState[0];
+      }
+    }
+  }
+
+  var nextValue = nextCreate();
+  hook.memoizedState = [nextValue, nextDeps];
+  return nextValue;
+}
+
+function mountDeferredValue(value, config) {
+  var _mountState = mountState(value),
+      prevValue = _mountState[0],
+      setValue = _mountState[1];
+
+  mountEffect(function () {
+    var previousConfig = ReactCurrentBatchConfig$1.suspense;
+    ReactCurrentBatchConfig$1.suspense = config === undefined ? null : config;
+
+    try {
+      setValue(value);
+    } finally {
+      ReactCurrentBatchConfig$1.suspense = previousConfig;
+    }
+  }, [value, config]);
+  return prevValue;
+}
+
+function updateDeferredValue(value, config) {
+  var _updateState = updateState(),
+      prevValue = _updateState[0],
+      setValue = _updateState[1];
+
+  updateEffect(function () {
+    var previousConfig = ReactCurrentBatchConfig$1.suspense;
+    ReactCurrentBatchConfig$1.suspense = config === undefined ? null : config;
+
+    try {
+      setValue(value);
+    } finally {
+      ReactCurrentBatchConfig$1.suspense = previousConfig;
+    }
+  }, [value, config]);
+  return prevValue;
+}
+
+function rerenderDeferredValue(value, config) {
+  var _rerenderState = rerenderState(),
+      prevValue = _rerenderState[0],
+      setValue = _rerenderState[1];
+
+  updateEffect(function () {
+    var previousConfig = ReactCurrentBatchConfig$1.suspense;
+    ReactCurrentBatchConfig$1.suspense = config === undefined ? null : config;
+
+    try {
+      setValue(value);
+    } finally {
+      ReactCurrentBatchConfig$1.suspense = previousConfig;
+    }
+  }, [value, config]);
+  return prevValue;
+}
+
+function startTransition(setPending, config, callback) {
+  var priorityLevel = getCurrentPriorityLevel();
+  runWithPriority$1(priorityLevel < UserBlockingPriority$1 ? UserBlockingPriority$1 : priorityLevel, function () {
+    setPending(true);
+  });
+  runWithPriority$1(priorityLevel > NormalPriority ? NormalPriority : priorityLevel, function () {
+    var previousConfig = ReactCurrentBatchConfig$1.suspense;
+    ReactCurrentBatchConfig$1.suspense = config === undefined ? null : config;
+
+    try {
+      setPending(false);
+      callback();
+    } finally {
+      ReactCurrentBatchConfig$1.suspense = previousConfig;
+    }
+  });
+}
+
+function mountTransition(config) {
+  var _mountState2 = mountState(false),
+      isPending = _mountState2[0],
+      setPending = _mountState2[1];
+
+  var start = mountCallback(startTransition.bind(null, setPending, config), [setPending, config]);
+  return [start, isPending];
+}
+
+function updateTransition(config) {
+  var _updateState2 = updateState(),
+      isPending = _updateState2[0],
+      setPending = _updateState2[1];
+
+  var start = updateCallback(startTransition.bind(null, setPending, config), [setPending, config]);
+  return [start, isPending];
+}
+
+function rerenderTransition(config) {
+  var _rerenderState2 = rerenderState(),
+      isPending = _rerenderState2[0],
+      setPending = _rerenderState2[1];
+
+  var start = updateCallback(startTransition.bind(null, setPending, config), [setPending, config]);
+  return [start, isPending];
+}
+
+function dispatchAction(fiber, queue, action) {
+  {
+    if (typeof arguments[3] === 'function') {
+      error("State updates from the useState() and useReducer() Hooks don't support the " + 'second callback argument. To execute a side effect after ' + 'rendering, declare it in the component body with useEffect().');
+    }
+  }
+
+  var currentTime = requestCurrentTimeForUpdate();
+  var suspenseConfig = requestCurrentSuspenseConfig();
+  var expirationTime = computeExpirationForFiber(currentTime, fiber, suspenseConfig);
+  var update = {
+    expirationTime: expirationTime,
+    suspenseConfig: suspenseConfig,
+    action: action,
+    eagerReducer: null,
+    eagerState: null,
+    next: null
+  };
+
+  {
+    update.priority = getCurrentPriorityLevel();
+  } // Append the update to the end of the list.
+
+
+  var pending = queue.pending;
+
+  if (pending === null) {
+    // This is the first update. Create a circular list.
+    update.next = update;
+  } else {
+    update.next = pending.next;
+    pending.next = update;
+  }
+
+  queue.pending = update;
+  var alternate = fiber.alternate;
+
+  if (fiber === currentlyRenderingFiber$1 || alternate !== null && alternate === currentlyRenderingFiber$1) {
+    // This is a render phase update. Stash it in a lazily-created map of
+    // queue -> linked list of updates. After this render pass, we'll restart
+    // and apply the stashed updates on top of the work-in-progress hook.
+    didScheduleRenderPhaseUpdate = true;
+    update.expirationTime = renderExpirationTime;
+    currentlyRenderingFiber$1.expirationTime = renderExpirationTime;
+  } else {
+    if (fiber.expirationTime === NoWork && (alternate === null || alternate.expirationTime === NoWork)) {
+      // The queue is currently empty, which means we can eagerly compute the
+      // next state before entering the render phase. If the new state is the
+      // same as the current state, we may be able to bail out entirely.
+      var lastRenderedReducer = queue.lastRenderedReducer;
+
+      if (lastRenderedReducer !== null) {
+        var prevDispatcher;
+
+        {
+          prevDispatcher = ReactCurrentDispatcher.current;
+          ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+        }
+
+        try {
+          var currentState = queue.lastRenderedState;
+          var eagerState = lastRenderedReducer(currentState, action); // Stash the eagerly computed state, and the reducer used to compute
+          // it, on the update object. If the reducer hasn't changed by the
+          // time we enter the render phase, then the eager state can be used
+          // without calling the reducer again.
+
+          update.eagerReducer = lastRenderedReducer;
+          update.eagerState = eagerState;
+
+          if (objectIs(eagerState, currentState)) {
+            // Fast path. We can bail out without scheduling React to re-render.
+            // It's still possible that we'll need to rebase this update later,
+            // if the component re-renders for a different reason and by that
+            // time the reducer has changed.
+            return;
+          }
+        } catch (error) {// Suppress the error. It will throw again in the render phase.
+        } finally {
+          {
+            ReactCurrentDispatcher.current = prevDispatcher;
+          }
+        }
+      }
+    }
+
+    {
+      // $FlowExpectedError - jest isn't a global, and isn't recognized outside of tests
+      if ('undefined' !== typeof jest) {
+        warnIfNotScopedWithMatchingAct(fiber);
+        warnIfNotCurrentlyActingUpdatesInDev(fiber);
+      }
+    }
+
+    scheduleWork(fiber, expirationTime);
+  }
+}
+
+var ContextOnlyDispatcher = {
+  readContext: readContext,
+  useCallback: throwInvalidHookError,
+  useContext: throwInvalidHookError,
+  useEffect: throwInvalidHookError,
+  useImperativeHandle: throwInvalidHookError,
+  useLayoutEffect: throwInvalidHookError,
+  useMemo: throwInvalidHookError,
+  useReducer: throwInvalidHookError,
+  useRef: throwInvalidHookError,
+  useState: throwInvalidHookError,
+  useDebugValue: throwInvalidHookError,
+  useResponder: throwInvalidHookError,
+  useDeferredValue: throwInvalidHookError,
+  useTransition: throwInvalidHookError
+};
+var HooksDispatcherOnMountInDEV = null;
+var HooksDispatcherOnMountWithHookTypesInDEV = null;
+var HooksDispatcherOnUpdateInDEV = null;
+var HooksDispatcherOnRerenderInDEV = null;
+var InvalidNestedHooksDispatcherOnMountInDEV = null;
+var InvalidNestedHooksDispatcherOnUpdateInDEV = null;
+var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
+
+{
+  var warnInvalidContextAccess = function () {
+    error('Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().');
+  };
+
+  var warnInvalidHookAccess = function () {
+    error('Do not call Hooks inside useEffect(...), useMemo(...), or other built-in Hooks. ' + 'You can only call Hooks at the top level of your React function. ' + 'For more information, see ' + 'https://fb.me/rules-of-hooks');
+  };
+
+  HooksDispatcherOnMountInDEV = {
+    readContext: function (context, observedBits) {
+      return readContext(context, observedBits);
+    },
+    useCallback: function (callback, deps) {
+      currentHookNameInDev = 'useCallback';
+      mountHookTypesDev();
+      checkDepsAreArrayDev(deps);
+      return mountCallback(callback, deps);
+    },
+    useContext: function (context, observedBits) {
+      currentHookNameInDev = 'useContext';
+      mountHookTypesDev();
+      return readContext(context, observedBits);
+    },
+    useEffect: function (create, deps) {
+      currentHookNameInDev = 'useEffect';
+      mountHookTypesDev();
+      checkDepsAreArrayDev(deps);
+      return mountEffect(create, deps);
+    },
+    useImperativeHandle: function (ref, create, deps) {
+      currentHookNameInDev = 'useImperativeHandle';
+      mountHookTypesDev();
+      checkDepsAreArrayDev(deps);
+      return mountImperativeHandle(ref, create, deps);
+    },
+    useLayoutEffect: function (create, deps) {
+      currentHookNameInDev = 'useLayoutEffect';
+      mountHookTypesDev();
+      checkDepsAreArrayDev(deps);
+      return mountLayoutEffect(create, deps);
+    },
+    useMemo: function (create, deps) {
+      currentHookNameInDev = 'useMemo';
+      mountHookTypesDev();
+      checkDepsAreArrayDev(deps);
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+      try {
+        return mountMemo(create, deps);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useReducer: function (reducer, initialArg, init) {
+      currentHookNameInDev = 'useReducer';
+      mountHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+      try {
+        return mountReducer(reducer, initialArg, init);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useRef: function (initialValue) {
+      currentHookNameInDev = 'useRef';
+      mountHookTypesDev();
+      return mountRef(initialValue);
+    },
+    useState: function (initialState) {
+      currentHookNameInDev = 'useState';
+      mountHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+      try {
+        return mountState(initialState);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useDebugValue: function (value, formatterFn) {
+      currentHookNameInDev = 'useDebugValue';
+      mountHookTypesDev();
+      return mountDebugValue();
+    },
+    useResponder: function (responder, props) {
+      currentHookNameInDev = 'useResponder';
+      mountHookTypesDev();
+      return createDeprecatedResponderListener(responder, props);
+    },
+    useDeferredValue: function (value, config) {
+      currentHookNameInDev = 'useDeferredValue';
+      mountHookTypesDev();
+      return mountDeferredValue(value, config);
+    },
+    useTransition: function (config) {
+      currentHookNameInDev = 'useTransition';
+      mountHookTypesDev();
+      return mountTransition(config);
+    }
+  };
+  HooksDispatcherOnMountWithHookTypesInDEV = {
+    readContext: function (context, observedBits) {
+      return readContext(context, observedBits);
+    },
+    useCallback: function (callback, deps) {
+      currentHookNameInDev = 'useCallback';
+      updateHookTypesDev();
+      return mountCallback(callback, deps);
+    },
+    useContext: function (context, observedBits) {
+      currentHookNameInDev = 'useContext';
+      updateHookTypesDev();
+      return readContext(context, observedBits);
+    },
+    useEffect: function (create, deps) {
+      currentHookNameInDev = 'useEffect';
+      updateHookTypesDev();
+      return mountEffect(create, deps);
+    },
+    useImperativeHandle: function (ref, create, deps) {
+      currentHookNameInDev = 'useImperativeHandle';
+      updateHookTypesDev();
+      return mountImperativeHandle(ref, create, deps);
+    },
+    useLayoutEffect: function (create, deps) {
+      currentHookNameInDev = 'useLayoutEffect';
+      updateHookTypesDev();
+      return mountLayoutEffect(create, deps);
+    },
+    useMemo: function (create, deps) {
+      currentHookNameInDev = 'useMemo';
+      updateHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+      try {
+        return mountMemo(create, deps);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useReducer: function (reducer, initialArg, init) {
+      currentHookNameInDev = 'useReducer';
+      updateHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+      try {
+        return mountReducer(reducer, initialArg, init);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useRef: function (initialValue) {
+      currentHookNameInDev = 'useRef';
+      updateHookTypesDev();
+      return mountRef(initialValue);
+    },
+    useState: function (initialState) {
+      currentHookNameInDev = 'useState';
+      updateHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+      try {
+        return mountState(initialState);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useDebugValue: function (value, formatterFn) {
+      currentHookNameInDev = 'useDebugValue';
+      updateHookTypesDev();
+      return mountDebugValue();
+    },
+    useResponder: function (responder, props) {
+      currentHookNameInDev = 'useResponder';
+      updateHookTypesDev();
+      return createDeprecatedResponderListener(responder, props);
+    },
+    useDeferredValue: function (value, config) {
+      currentHookNameInDev = 'useDeferredValue';
+      updateHookTypesDev();
+      return mountDeferredValue(value, config);
+    },
+    useTransition: function (config) {
+      currentHookNameInDev = 'useTransition';
+      updateHookTypesDev();
+      return mountTransition(config);
+    }
+  };
+  HooksDispatcherOnUpdateInDEV = {
+    readContext: function (context, observedBits) {
+      return readContext(context, observedBits);
+    },
+    useCallback: function (callback, deps) {
+      currentHookNameInDev = 'useCallback';
+      updateHookTypesDev();
+      return updateCallback(callback, deps);
+    },
+    useContext: function (context, observedBits) {
+      currentHookNameInDev = 'useContext';
+      updateHookTypesDev();
+      return readContext(context, observedBits);
+    },
+    useEffect: function (create, deps) {
+      currentHookNameInDev = 'useEffect';
+      updateHookTypesDev();
+      return updateEffect(create, deps);
+    },
+    useImperativeHandle: function (ref, create, deps) {
+      currentHookNameInDev = 'useImperativeHandle';
+      updateHookTypesDev();
+      return updateImperativeHandle(ref, create, deps);
+    },
+    useLayoutEffect: function (create, deps) {
+      currentHookNameInDev = 'useLayoutEffect';
+      updateHookTypesDev();
+      return updateLayoutEffect(create, deps);
+    },
+    useMemo: function (create, deps) {
+      currentHookNameInDev = 'useMemo';
+      updateHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+      try {
+        return updateMemo(create, deps);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useReducer: function (reducer, initialArg, init) {
+      currentHookNameInDev = 'useReducer';
+      updateHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+      try {
+        return updateReducer(reducer, initialArg, init);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useRef: function (initialValue) {
+      currentHookNameInDev = 'useRef';
+      updateHookTypesDev();
+      return updateRef();
+    },
+    useState: function (initialState) {
+      currentHookNameInDev = 'useState';
+      updateHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+      try {
+        return updateState(initialState);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useDebugValue: function (value, formatterFn) {
+      currentHookNameInDev = 'useDebugValue';
+      updateHookTypesDev();
+      return updateDebugValue();
+    },
+    useResponder: function (responder, props) {
+      currentHookNameInDev = 'useResponder';
+      updateHookTypesDev();
+      return createDeprecatedResponderListener(responder, props);
+    },
+    useDeferredValue: function (value, config) {
+      currentHookNameInDev = 'useDeferredValue';
+      updateHookTypesDev();
+      return updateDeferredValue(value, config);
+    },
+    useTransition: function (config) {
+      currentHookNameInDev = 'useTransition';
+      updateHookTypesDev();
+      return updateTransition(config);
+    }
+  };
+  HooksDispatcherOnRerenderInDEV = {
+    readContext: function (context, observedBits) {
+      return readContext(context, observedBits);
+    },
+    useCallback: function (callback, deps) {
+      currentHookNameInDev = 'useCallback';
+      updateHookTypesDev();
+      return updateCallback(callback, deps);
+    },
+    useContext: function (context, observedBits) {
+      currentHookNameInDev = 'useContext';
+      updateHookTypesDev();
+      return readContext(context, observedBits);
+    },
+    useEffect: function (create, deps) {
+      currentHookNameInDev = 'useEffect';
+      updateHookTypesDev();
+      return updateEffect(create, deps);
+    },
+    useImperativeHandle: function (ref, create, deps) {
+      currentHookNameInDev = 'useImperativeHandle';
+      updateHookTypesDev();
+      return updateImperativeHandle(ref, create, deps);
+    },
+    useLayoutEffect: function (create, deps) {
+      currentHookNameInDev = 'useLayoutEffect';
+      updateHookTypesDev();
+      return updateLayoutEffect(create, deps);
+    },
+    useMemo: function (create, deps) {
+      currentHookNameInDev = 'useMemo';
+      updateHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnRerenderInDEV;
+
+      try {
+        return updateMemo(create, deps);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useReducer: function (reducer, initialArg, init) {
+      currentHookNameInDev = 'useReducer';
+      updateHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnRerenderInDEV;
+
+      try {
+        return rerenderReducer(reducer, initialArg, init);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useRef: function (initialValue) {
+      currentHookNameInDev = 'useRef';
+      updateHookTypesDev();
+      return updateRef();
+    },
+    useState: function (initialState) {
+      currentHookNameInDev = 'useState';
+      updateHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnRerenderInDEV;
+
+      try {
+        return rerenderState(initialState);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useDebugValue: function (value, formatterFn) {
+      currentHookNameInDev = 'useDebugValue';
+      updateHookTypesDev();
+      return updateDebugValue();
+    },
+    useResponder: function (responder, props) {
+      currentHookNameInDev = 'useResponder';
+      updateHookTypesDev();
+      return createDeprecatedResponderListener(responder, props);
+    },
+    useDeferredValue: function (value, config) {
+      currentHookNameInDev = 'useDeferredValue';
+      updateHookTypesDev();
+      return rerenderDeferredValue(value, config);
+    },
+    useTransition: function (config) {
+      currentHookNameInDev = 'useTransition';
+      updateHookTypesDev();
+      return rerenderTransition(config);
+    }
+  };
+  InvalidNestedHooksDispatcherOnMountInDEV = {
+    readContext: function (context, observedBits) {
+      warnInvalidContextAccess();
+      return readContext(context, observedBits);
+    },
+    useCallback: function (callback, deps) {
+      currentHookNameInDev = 'useCallback';
+      warnInvalidHookAccess();
+      mountHookTypesDev();
+      return mountCallback(callback, deps);
+    },
+    useContext: function (context, observedBits) {
+      currentHookNameInDev = 'useContext';
+      warnInvalidHookAccess();
+      mountHookTypesDev();
+      return readContext(context, observedBits);
+    },
+    useEffect: function (create, deps) {
+      currentHookNameInDev = 'useEffect';
+      warnInvalidHookAccess();
+      mountHookTypesDev();
+      return mountEffect(create, deps);
+    },
+    useImperativeHandle: function (ref, create, deps) {
+      currentHookNameInDev = 'useImperativeHandle';
+      warnInvalidHookAccess();
+      mountHookTypesDev();
+      return mountImperativeHandle(ref, create, deps);
+    },
+    useLayoutEffect: function (create, deps) {
+      currentHookNameInDev = 'useLayoutEffect';
+      warnInvalidHookAccess();
+      mountHookTypesDev();
+      return mountLayoutEffect(create, deps);
+    },
+    useMemo: function (create, deps) {
+      currentHookNameInDev = 'useMemo';
+      warnInvalidHookAccess();
+      mountHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+      try {
+        return mountMemo(create, deps);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useReducer: function (reducer, initialArg, init) {
+      currentHookNameInDev = 'useReducer';
+      warnInvalidHookAccess();
+      mountHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+      try {
+        return mountReducer(reducer, initialArg, init);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useRef: function (initialValue) {
+      currentHookNameInDev = 'useRef';
+      warnInvalidHookAccess();
+      mountHookTypesDev();
+      return mountRef(initialValue);
+    },
+    useState: function (initialState) {
+      currentHookNameInDev = 'useState';
+      warnInvalidHookAccess();
+      mountHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+      try {
+        return mountState(initialState);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useDebugValue: function (value, formatterFn) {
+      currentHookNameInDev = 'useDebugValue';
+      warnInvalidHookAccess();
+      mountHookTypesDev();
+      return mountDebugValue();
+    },
+    useResponder: function (responder, props) {
+      currentHookNameInDev = 'useResponder';
+      warnInvalidHookAccess();
+      mountHookTypesDev();
+      return createDeprecatedResponderListener(responder, props);
+    },
+    useDeferredValue: function (value, config) {
+      currentHookNameInDev = 'useDeferredValue';
+      warnInvalidHookAccess();
+      mountHookTypesDev();
+      return mountDeferredValue(value, config);
+    },
+    useTransition: function (config) {
+      currentHookNameInDev = 'useTransition';
+      warnInvalidHookAccess();
+      mountHookTypesDev();
+      return mountTransition(config);
+    }
+  };
+  InvalidNestedHooksDispatcherOnUpdateInDEV = {
+    readContext: function (context, observedBits) {
+      warnInvalidContextAccess();
+      return readContext(context, observedBits);
+    },
+    useCallback: function (callback, deps) {
+      currentHookNameInDev = 'useCallback';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return updateCallback(callback, deps);
+    },
+    useContext: function (context, observedBits) {
+      currentHookNameInDev = 'useContext';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return readContext(context, observedBits);
+    },
+    useEffect: function (create, deps) {
+      currentHookNameInDev = 'useEffect';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return updateEffect(create, deps);
+    },
+    useImperativeHandle: function (ref, create, deps) {
+      currentHookNameInDev = 'useImperativeHandle';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return updateImperativeHandle(ref, create, deps);
+    },
+    useLayoutEffect: function (create, deps) {
+      currentHookNameInDev = 'useLayoutEffect';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return updateLayoutEffect(create, deps);
+    },
+    useMemo: function (create, deps) {
+      currentHookNameInDev = 'useMemo';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+      try {
+        return updateMemo(create, deps);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useReducer: function (reducer, initialArg, init) {
+      currentHookNameInDev = 'useReducer';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+      try {
+        return updateReducer(reducer, initialArg, init);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useRef: function (initialValue) {
+      currentHookNameInDev = 'useRef';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return updateRef();
+    },
+    useState: function (initialState) {
+      currentHookNameInDev = 'useState';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+      try {
+        return updateState(initialState);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useDebugValue: function (value, formatterFn) {
+      currentHookNameInDev = 'useDebugValue';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return updateDebugValue();
+    },
+    useResponder: function (responder, props) {
+      currentHookNameInDev = 'useResponder';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return createDeprecatedResponderListener(responder, props);
+    },
+    useDeferredValue: function (value, config) {
+      currentHookNameInDev = 'useDeferredValue';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return updateDeferredValue(value, config);
+    },
+    useTransition: function (config) {
+      currentHookNameInDev = 'useTransition';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return updateTransition(config);
+    }
+  };
+  InvalidNestedHooksDispatcherOnRerenderInDEV = {
+    readContext: function (context, observedBits) {
+      warnInvalidContextAccess();
+      return readContext(context, observedBits);
+    },
+    useCallback: function (callback, deps) {
+      currentHookNameInDev = 'useCallback';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return updateCallback(callback, deps);
+    },
+    useContext: function (context, observedBits) {
+      currentHookNameInDev = 'useContext';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return readContext(context, observedBits);
+    },
+    useEffect: function (create, deps) {
+      currentHookNameInDev = 'useEffect';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return updateEffect(create, deps);
+    },
+    useImperativeHandle: function (ref, create, deps) {
+      currentHookNameInDev = 'useImperativeHandle';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return updateImperativeHandle(ref, create, deps);
+    },
+    useLayoutEffect: function (create, deps) {
+      currentHookNameInDev = 'useLayoutEffect';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return updateLayoutEffect(create, deps);
+    },
+    useMemo: function (create, deps) {
+      currentHookNameInDev = 'useMemo';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+      try {
+        return updateMemo(create, deps);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useReducer: function (reducer, initialArg, init) {
+      currentHookNameInDev = 'useReducer';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+      try {
+        return rerenderReducer(reducer, initialArg, init);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useRef: function (initialValue) {
+      currentHookNameInDev = 'useRef';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return updateRef();
+    },
+    useState: function (initialState) {
+      currentHookNameInDev = 'useState';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+      try {
+        return rerenderState(initialState);
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+      }
+    },
+    useDebugValue: function (value, formatterFn) {
+      currentHookNameInDev = 'useDebugValue';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return updateDebugValue();
+    },
+    useResponder: function (responder, props) {
+      currentHookNameInDev = 'useResponder';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return createDeprecatedResponderListener(responder, props);
+    },
+    useDeferredValue: function (value, config) {
+      currentHookNameInDev = 'useDeferredValue';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return rerenderDeferredValue(value, config);
+    },
+    useTransition: function (config) {
+      currentHookNameInDev = 'useTransition';
+      warnInvalidHookAccess();
+      updateHookTypesDev();
+      return rerenderTransition(config);
+    }
+  };
+}
+
+var now$1 = Scheduler.unstable_now;
+var commitTime = 0;
+var profilerStartTime = -1;
+
+function getCommitTime() {
+  return commitTime;
+}
+
+function recordCommitTime() {
+
+  commitTime = now$1();
+}
+
+function startProfilerTimer(fiber) {
+
+  profilerStartTime = now$1();
+
+  if (fiber.actualStartTime < 0) {
+    fiber.actualStartTime = now$1();
+  }
+}
+
+function stopProfilerTimerIfRunning(fiber) {
+
+  profilerStartTime = -1;
+}
+
+function stopProfilerTimerIfRunningAndRecordDelta(fiber, overrideBaseTime) {
+
+  if (profilerStartTime >= 0) {
+    var elapsedTime = now$1() - profilerStartTime;
+    fiber.actualDuration += elapsedTime;
+
+    if (overrideBaseTime) {
+      fiber.selfBaseDuration = elapsedTime;
+    }
+
+    profilerStartTime = -1;
+  }
+}
+
+// This may have been an insertion or a hydration.
+
+var hydrationParentFiber = null;
+var nextHydratableInstance = null;
+var isHydrating = false;
+
+function enterHydrationState(fiber) {
+
+  var parentInstance = fiber.stateNode.containerInfo;
+  nextHydratableInstance = getFirstHydratableChild(parentInstance);
+  hydrationParentFiber = fiber;
+  isHydrating = true;
+  return true;
+}
+
+function deleteHydratableInstance(returnFiber, instance) {
+  {
+    switch (returnFiber.tag) {
+      case HostRoot:
+        didNotHydrateContainerInstance(returnFiber.stateNode.containerInfo, instance);
+        break;
+
+      case HostComponent:
+        didNotHydrateInstance(returnFiber.type, returnFiber.memoizedProps, returnFiber.stateNode, instance);
+        break;
+    }
+  }
+
+  var childToDelete = createFiberFromHostInstanceForDeletion();
+  childToDelete.stateNode = instance;
+  childToDelete.return = returnFiber;
+  childToDelete.effectTag = Deletion; // This might seem like it belongs on progressedFirstDeletion. However,
+  // these children are not part of the reconciliation list of children.
+  // Even if we abort and rereconcile the children, that will try to hydrate
+  // again and the nodes are still in the host tree so these will be
+  // recreated.
+
+  if (returnFiber.lastEffect !== null) {
+    returnFiber.lastEffect.nextEffect = childToDelete;
+    returnFiber.lastEffect = childToDelete;
+  } else {
+    returnFiber.firstEffect = returnFiber.lastEffect = childToDelete;
+  }
+}
+
+function insertNonHydratedInstance(returnFiber, fiber) {
+  fiber.effectTag = fiber.effectTag & ~Hydrating | Placement;
+
+  {
+    switch (returnFiber.tag) {
+      case HostRoot:
+        {
+          var parentContainer = returnFiber.stateNode.containerInfo;
+
+          switch (fiber.tag) {
+            case HostComponent:
+              var type = fiber.type;
+              var props = fiber.pendingProps;
+              didNotFindHydratableContainerInstance(parentContainer, type);
+              break;
+
+            case HostText:
+              var text = fiber.pendingProps;
+              didNotFindHydratableContainerTextInstance(parentContainer, text);
+              break;
+          }
+
+          break;
+        }
+
+      case HostComponent:
+        {
+          var parentType = returnFiber.type;
+          var parentProps = returnFiber.memoizedProps;
+          var parentInstance = returnFiber.stateNode;
+
+          switch (fiber.tag) {
+            case HostComponent:
+              var _type = fiber.type;
+              var _props = fiber.pendingProps;
+              didNotFindHydratableInstance(parentType, parentProps, parentInstance, _type);
+              break;
+
+            case HostText:
+              var _text = fiber.pendingProps;
+              didNotFindHydratableTextInstance(parentType, parentProps, parentInstance, _text);
+              break;
+
+            case SuspenseComponent:
+              didNotFindHydratableSuspenseInstance(parentType, parentProps);
+              break;
+          }
+
+          break;
+        }
+
+      default:
+        return;
+    }
+  }
+}
+
+function tryHydrate(fiber, nextInstance) {
+  switch (fiber.tag) {
+    case HostComponent:
+      {
+        var type = fiber.type;
+        var props = fiber.pendingProps;
+        var instance = canHydrateInstance(nextInstance, type);
+
+        if (instance !== null) {
+          fiber.stateNode = instance;
+          return true;
+        }
+
+        return false;
+      }
+
+    case HostText:
+      {
+        var text = fiber.pendingProps;
+        var textInstance = canHydrateTextInstance(nextInstance, text);
+
+        if (textInstance !== null) {
+          fiber.stateNode = textInstance;
+          return true;
+        }
+
+        return false;
+      }
+
+    case SuspenseComponent:
+      {
+
+        return false;
+      }
+
+    default:
+      return false;
+  }
+}
+
+function tryToClaimNextHydratableInstance(fiber) {
+  if (!isHydrating) {
+    return;
+  }
+
+  var nextInstance = nextHydratableInstance;
+
+  if (!nextInstance) {
+    // Nothing to hydrate. Make it an insertion.
+    insertNonHydratedInstance(hydrationParentFiber, fiber);
+    isHydrating = false;
+    hydrationParentFiber = fiber;
+    return;
+  }
+
+  var firstAttemptedInstance = nextInstance;
+
+  if (!tryHydrate(fiber, nextInstance)) {
+    // If we can't hydrate this instance let's try the next one.
+    // We use this as a heuristic. It's based on intuition and not data so it
+    // might be flawed or unnecessary.
+    nextInstance = getNextHydratableSibling(firstAttemptedInstance);
+
+    if (!nextInstance || !tryHydrate(fiber, nextInstance)) {
+      // Nothing to hydrate. Make it an insertion.
+      insertNonHydratedInstance(hydrationParentFiber, fiber);
+      isHydrating = false;
+      hydrationParentFiber = fiber;
+      return;
+    } // We matched the next one, we'll now assume that the first one was
+    // superfluous and we'll delete it. Since we can't eagerly delete it
+    // we'll have to schedule a deletion. To do that, this node needs a dummy
+    // fiber associated with it.
+
+
+    deleteHydratableInstance(hydrationParentFiber, firstAttemptedInstance);
+  }
+
+  hydrationParentFiber = fiber;
+  nextHydratableInstance = getFirstHydratableChild(nextInstance);
+}
+
+function prepareToHydrateHostInstance(fiber, rootContainerInstance, hostContext) {
+
+  var instance = fiber.stateNode;
+  var updatePayload = hydrateInstance(instance, fiber.type, fiber.memoizedProps, rootContainerInstance, hostContext, fiber); // TODO: Type this specific to this type of component.
+
+  fiber.updateQueue = updatePayload; // If the update payload indicates that there is a change or if there
+  // is a new ref we mark this as an update.
+
+  if (updatePayload !== null) {
+    return true;
+  }
+
+  return false;
+}
+
+function prepareToHydrateHostTextInstance(fiber) {
+
+  var textInstance = fiber.stateNode;
+  var textContent = fiber.memoizedProps;
+  var shouldUpdate = hydrateTextInstance(textInstance, textContent, fiber);
+
+  {
+    if (shouldUpdate) {
+      // We assume that prepareToHydrateHostTextInstance is called in a context where the
+      // hydration parent is the parent host component of this host text.
+      var returnFiber = hydrationParentFiber;
+
+      if (returnFiber !== null) {
+        switch (returnFiber.tag) {
+          case HostRoot:
+            {
+              var parentContainer = returnFiber.stateNode.containerInfo;
+              didNotMatchHydratedContainerTextInstance(parentContainer, textInstance, textContent);
+              break;
+            }
+
+          case HostComponent:
+            {
+              var parentType = returnFiber.type;
+              var parentProps = returnFiber.memoizedProps;
+              var parentInstance = returnFiber.stateNode;
+              didNotMatchHydratedTextInstance(parentType, parentProps, parentInstance, textInstance, textContent);
+              break;
+            }
+        }
+      }
+    }
+  }
+
+  return shouldUpdate;
+}
+
+function skipPastDehydratedSuspenseInstance(fiber) {
+
+  var suspenseState = fiber.memoizedState;
+  var suspenseInstance = suspenseState !== null ? suspenseState.dehydrated : null;
+
+  if (!suspenseInstance) {
+    {
+      throw Error( "Expected to have a hydrated suspense instance. This error is likely caused by a bug in React. Please file an issue." );
+    }
+  }
+
+  return getNextHydratableInstanceAfterSuspenseInstance(suspenseInstance);
+}
+
+function popToNextHostParent(fiber) {
+  var parent = fiber.return;
+
+  while (parent !== null && parent.tag !== HostComponent && parent.tag !== HostRoot && parent.tag !== SuspenseComponent) {
+    parent = parent.return;
+  }
+
+  hydrationParentFiber = parent;
+}
+
+function popHydrationState(fiber) {
+
+  if (fiber !== hydrationParentFiber) {
+    // We're deeper than the current hydration context, inside an inserted
+    // tree.
+    return false;
+  }
+
+  if (!isHydrating) {
+    // If we're not currently hydrating but we're in a hydration context, then
+    // we were an insertion and now need to pop up reenter hydration of our
+    // siblings.
+    popToNextHostParent(fiber);
+    isHydrating = true;
+    return false;
+  }
+
+  var type = fiber.type; // If we have any remaining hydratable nodes, we need to delete them now.
+  // We only do this deeper than head and body since they tend to have random
+  // other nodes in them. We also ignore components with pure text content in
+  // side of them.
+  // TODO: Better heuristic.
+
+  if (fiber.tag !== HostComponent || type !== 'head' && type !== 'body' && !shouldSetTextContent(type, fiber.memoizedProps)) {
+    var nextInstance = nextHydratableInstance;
+
+    while (nextInstance) {
+      deleteHydratableInstance(fiber, nextInstance);
+      nextInstance = getNextHydratableSibling(nextInstance);
+    }
+  }
+
+  popToNextHostParent(fiber);
+
+  if (fiber.tag === SuspenseComponent) {
+    nextHydratableInstance = skipPastDehydratedSuspenseInstance(fiber);
+  } else {
+    nextHydratableInstance = hydrationParentFiber ? getNextHydratableSibling(fiber.stateNode) : null;
+  }
+
+  return true;
+}
+
+function resetHydrationState() {
+
+  hydrationParentFiber = null;
+  nextHydratableInstance = null;
+  isHydrating = false;
+}
+
+var ReactCurrentOwner$1 = ReactSharedInternals.ReactCurrentOwner;
+var didReceiveUpdate = false;
+var didWarnAboutBadClass;
+var didWarnAboutModulePatternComponent;
+var didWarnAboutContextTypeOnFunctionComponent;
+var didWarnAboutGetDerivedStateOnFunctionComponent;
+var didWarnAboutFunctionRefs;
+var didWarnAboutReassigningProps;
+var didWarnAboutRevealOrder;
+var didWarnAboutTailOptions;
+
+{
+  didWarnAboutBadClass = {};
+  didWarnAboutModulePatternComponent = {};
+  didWarnAboutContextTypeOnFunctionComponent = {};
+  didWarnAboutGetDerivedStateOnFunctionComponent = {};
+  didWarnAboutFunctionRefs = {};
+  didWarnAboutReassigningProps = false;
+  didWarnAboutRevealOrder = {};
+  didWarnAboutTailOptions = {};
+}
+
+function reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime) {
+  if (current === null) {
+    // If this is a fresh new component that hasn't been rendered yet, we
+    // won't update its child set by applying minimal side-effects. Instead,
+    // we will add them all to the child before it gets rendered. That means
+    // we can optimize this reconciliation pass by not tracking side-effects.
+    workInProgress.child = mountChildFibers(workInProgress, null, nextChildren, renderExpirationTime);
+  } else {
+    // If the current child is the same as the work in progress, it means that
+    // we haven't yet started any work on these children. Therefore, we use
+    // the clone algorithm to create a copy of all the current children.
+    // If we had any progressed work already, that is invalid at this point so
+    // let's throw it out.
+    workInProgress.child = reconcileChildFibers(workInProgress, current.child, nextChildren, renderExpirationTime);
+  }
+}
+
+function forceUnmountCurrentAndReconcile(current, workInProgress, nextChildren, renderExpirationTime) {
+  // This function is fork of reconcileChildren. It's used in cases where we
+  // want to reconcile without matching against the existing set. This has the
+  // effect of all current children being unmounted; even if the type and key
+  // are the same, the old child is unmounted and a new child is created.
+  //
+  // To do this, we're going to go through the reconcile algorithm twice. In
+  // the first pass, we schedule a deletion for all the current children by
+  // passing null.
+  workInProgress.child = reconcileChildFibers(workInProgress, current.child, null, renderExpirationTime); // In the second pass, we mount the new children. The trick here is that we
+  // pass null in place of where we usually pass the current child set. This has
+  // the effect of remounting all children regardless of whether their
+  // identities match.
+
+  workInProgress.child = reconcileChildFibers(workInProgress, null, nextChildren, renderExpirationTime);
+}
+
+function updateForwardRef(current, workInProgress, Component, nextProps, renderExpirationTime) {
+  // TODO: current can be non-null here even if the component
+  // hasn't yet mounted. This happens after the first render suspends.
+  // We'll need to figure out if this is fine or can cause issues.
+  {
+    if (workInProgress.type !== workInProgress.elementType) {
+      // Lazy component props can't be validated in createElement
+      // because they're only guaranteed to be resolved here.
+      var innerPropTypes = Component.propTypes;
+
+      if (innerPropTypes) {
+        checkPropTypes(innerPropTypes, nextProps, // Resolved props
+        'prop', getComponentName(Component), getCurrentFiberStackInDev);
+      }
+    }
+  }
+
+  var render = Component.render;
+  var ref = workInProgress.ref; // The rest is a fork of updateFunctionComponent
+
+  var nextChildren;
+  prepareToReadContext(workInProgress, renderExpirationTime);
+
+  {
+    ReactCurrentOwner$1.current = workInProgress;
+    setIsRendering(true);
+    nextChildren = renderWithHooks(current, workInProgress, render, nextProps, ref, renderExpirationTime);
+
+    if ( workInProgress.mode & StrictMode) {
+      // Only double-render components with Hooks
+      if (workInProgress.memoizedState !== null) {
+        nextChildren = renderWithHooks(current, workInProgress, render, nextProps, ref, renderExpirationTime);
+      }
+    }
+
+    setIsRendering(false);
+  }
+
+  if (current !== null && !didReceiveUpdate) {
+    bailoutHooks(current, workInProgress, renderExpirationTime);
+    return bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+  } // React DevTools reads this flag.
+
+
+  workInProgress.effectTag |= PerformedWork;
+  reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+  return workInProgress.child;
+}
+
+function updateMemoComponent(current, workInProgress, Component, nextProps, updateExpirationTime, renderExpirationTime) {
+  if (current === null) {
+    var type = Component.type;
+
+    if (isSimpleFunctionComponent(type) && Component.compare === null && // SimpleMemoComponent codepath doesn't resolve outer props either.
+    Component.defaultProps === undefined) {
+      var resolvedType = type;
+
+      {
+        resolvedType = resolveFunctionForHotReloading(type);
+      } // If this is a plain function component without default props,
+      // and with only the default shallow comparison, we upgrade it
+      // to a SimpleMemoComponent to allow fast path updates.
+
+
+      workInProgress.tag = SimpleMemoComponent;
+      workInProgress.type = resolvedType;
+
+      {
+        validateFunctionComponentInDev(workInProgress, type);
+      }
+
+      return updateSimpleMemoComponent(current, workInProgress, resolvedType, nextProps, updateExpirationTime, renderExpirationTime);
+    }
+
+    {
+      var innerPropTypes = type.propTypes;
+
+      if (innerPropTypes) {
+        // Inner memo component props aren't currently validated in createElement.
+        // We could move it there, but we'd still need this for lazy code path.
+        checkPropTypes(innerPropTypes, nextProps, // Resolved props
+        'prop', getComponentName(type), getCurrentFiberStackInDev);
+      }
+    }
+
+    var child = createFiberFromTypeAndProps(Component.type, null, nextProps, null, workInProgress.mode, renderExpirationTime);
+    child.ref = workInProgress.ref;
+    child.return = workInProgress;
+    workInProgress.child = child;
+    return child;
+  }
+
+  {
+    var _type = Component.type;
+    var _innerPropTypes = _type.propTypes;
+
+    if (_innerPropTypes) {
+      // Inner memo component props aren't currently validated in createElement.
+      // We could move it there, but we'd still need this for lazy code path.
+      checkPropTypes(_innerPropTypes, nextProps, // Resolved props
+      'prop', getComponentName(_type), getCurrentFiberStackInDev);
+    }
+  }
+
+  var currentChild = current.child; // This is always exactly one child
+
+  if (updateExpirationTime < renderExpirationTime) {
+    // This will be the props with resolved defaultProps,
+    // unlike current.memoizedProps which will be the unresolved ones.
+    var prevProps = currentChild.memoizedProps; // Default to shallow comparison
+
+    var compare = Component.compare;
+    compare = compare !== null ? compare : shallowEqual;
+
+    if (compare(prevProps, nextProps) && current.ref === workInProgress.ref) {
+      return bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+    }
+  } // React DevTools reads this flag.
+
+
+  workInProgress.effectTag |= PerformedWork;
+  var newChild = createWorkInProgress(currentChild, nextProps);
+  newChild.ref = workInProgress.ref;
+  newChild.return = workInProgress;
+  workInProgress.child = newChild;
+  return newChild;
+}
+
+function updateSimpleMemoComponent(current, workInProgress, Component, nextProps, updateExpirationTime, renderExpirationTime) {
+  // TODO: current can be non-null here even if the component
+  // hasn't yet mounted. This happens when the inner render suspends.
+  // We'll need to figure out if this is fine or can cause issues.
+  {
+    if (workInProgress.type !== workInProgress.elementType) {
+      // Lazy component props can't be validated in createElement
+      // because they're only guaranteed to be resolved here.
+      var outerMemoType = workInProgress.elementType;
+
+      if (outerMemoType.$$typeof === REACT_LAZY_TYPE) {
+        // We warn when you define propTypes on lazy()
+        // so let's just skip over it to find memo() outer wrapper.
+        // Inner props for memo are validated later.
+        outerMemoType = refineResolvedLazyComponent(outerMemoType);
+      }
+
+      var outerPropTypes = outerMemoType && outerMemoType.propTypes;
+
+      if (outerPropTypes) {
+        checkPropTypes(outerPropTypes, nextProps, // Resolved (SimpleMemoComponent has no defaultProps)
+        'prop', getComponentName(outerMemoType), getCurrentFiberStackInDev);
+      } // Inner propTypes will be validated in the function component path.
+
+    }
+  }
+
+  if (current !== null) {
+    var prevProps = current.memoizedProps;
+
+    if (shallowEqual(prevProps, nextProps) && current.ref === workInProgress.ref && ( // Prevent bailout if the implementation changed due to hot reload.
+     workInProgress.type === current.type )) {
+      didReceiveUpdate = false;
+
+      if (updateExpirationTime < renderExpirationTime) {
+        // The pending update priority was cleared at the beginning of
+        // beginWork. We're about to bail out, but there might be additional
+        // updates at a lower priority. Usually, the priority level of the
+        // remaining updates is accumlated during the evaluation of the
+        // component (i.e. when processing the update queue). But since since
+        // we're bailing out early *without* evaluating the component, we need
+        // to account for it here, too. Reset to the value of the current fiber.
+        // NOTE: This only applies to SimpleMemoComponent, not MemoComponent,
+        // because a MemoComponent fiber does not have hooks or an update queue;
+        // rather, it wraps around an inner component, which may or may not
+        // contains hooks.
+        // TODO: Move the reset at in beginWork out of the common path so that
+        // this is no longer necessary.
+        workInProgress.expirationTime = current.expirationTime;
+        return bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+      }
+    }
+  }
+
+  return updateFunctionComponent(current, workInProgress, Component, nextProps, renderExpirationTime);
+}
+
+function updateFragment(current, workInProgress, renderExpirationTime) {
+  var nextChildren = workInProgress.pendingProps;
+  reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+  return workInProgress.child;
+}
+
+function updateMode(current, workInProgress, renderExpirationTime) {
+  var nextChildren = workInProgress.pendingProps.children;
+  reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+  return workInProgress.child;
+}
+
+function updateProfiler(current, workInProgress, renderExpirationTime) {
+  {
+    workInProgress.effectTag |= Update;
+  }
+
+  var nextProps = workInProgress.pendingProps;
+  var nextChildren = nextProps.children;
+  reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+  return workInProgress.child;
+}
+
+function markRef(current, workInProgress) {
+  var ref = workInProgress.ref;
+
+  if (current === null && ref !== null || current !== null && current.ref !== ref) {
+    // Schedule a Ref effect
+    workInProgress.effectTag |= Ref;
+  }
+}
+
+function updateFunctionComponent(current, workInProgress, Component, nextProps, renderExpirationTime) {
+  {
+    if (workInProgress.type !== workInProgress.elementType) {
+      // Lazy component props can't be validated in createElement
+      // because they're only guaranteed to be resolved here.
+      var innerPropTypes = Component.propTypes;
+
+      if (innerPropTypes) {
+        checkPropTypes(innerPropTypes, nextProps, // Resolved props
+        'prop', getComponentName(Component), getCurrentFiberStackInDev);
+      }
+    }
+  }
+
+  var context;
+
+  {
+    var unmaskedContext = getUnmaskedContext(workInProgress, Component, true);
+    context = getMaskedContext(workInProgress, unmaskedContext);
+  }
+
+  var nextChildren;
+  prepareToReadContext(workInProgress, renderExpirationTime);
+
+  {
+    ReactCurrentOwner$1.current = workInProgress;
+    setIsRendering(true);
+    nextChildren = renderWithHooks(current, workInProgress, Component, nextProps, context, renderExpirationTime);
+
+    if ( workInProgress.mode & StrictMode) {
+      // Only double-render components with Hooks
+      if (workInProgress.memoizedState !== null) {
+        nextChildren = renderWithHooks(current, workInProgress, Component, nextProps, context, renderExpirationTime);
+      }
+    }
+
+    setIsRendering(false);
+  }
+
+  if (current !== null && !didReceiveUpdate) {
+    bailoutHooks(current, workInProgress, renderExpirationTime);
+    return bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+  } // React DevTools reads this flag.
+
+
+  workInProgress.effectTag |= PerformedWork;
+  reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+  return workInProgress.child;
+}
+
+function updateClassComponent(current, workInProgress, Component, nextProps, renderExpirationTime) {
+  {
+    if (workInProgress.type !== workInProgress.elementType) {
+      // Lazy component props can't be validated in createElement
+      // because they're only guaranteed to be resolved here.
+      var innerPropTypes = Component.propTypes;
+
+      if (innerPropTypes) {
+        checkPropTypes(innerPropTypes, nextProps, // Resolved props
+        'prop', getComponentName(Component), getCurrentFiberStackInDev);
+      }
+    }
+  } // Push context providers early to prevent context stack mismatches.
+  // During mounting we don't know the child context yet as the instance doesn't exist.
+  // We will invalidate the child context in finishClassComponent() right after rendering.
+
+
+  var hasContext;
+
+  if (isContextProvider(Component)) {
+    hasContext = true;
+    pushContextProvider(workInProgress);
+  } else {
+    hasContext = false;
+  }
+
+  prepareToReadContext(workInProgress, renderExpirationTime);
+  var instance = workInProgress.stateNode;
+  var shouldUpdate;
+
+  if (instance === null) {
+    if (current !== null) {
+      // A class component without an instance only mounts if it suspended
+      // inside a non-concurrent tree, in an inconsistent state. We want to
+      // treat it like a new mount, even though an empty version of it already
+      // committed. Disconnect the alternate pointers.
+      current.alternate = null;
+      workInProgress.alternate = null; // Since this is conceptually a new fiber, schedule a Placement effect
+
+      workInProgress.effectTag |= Placement;
+    } // In the initial pass we might need to construct the instance.
+
+
+    constructClassInstance(workInProgress, Component, nextProps);
+    mountClassInstance(workInProgress, Component, nextProps, renderExpirationTime);
+    shouldUpdate = true;
+  } else if (current === null) {
+    // In a resume, we'll already have an instance we can reuse.
+    shouldUpdate = resumeMountClassInstance(workInProgress, Component, nextProps, renderExpirationTime);
+  } else {
+    shouldUpdate = updateClassInstance(current, workInProgress, Component, nextProps, renderExpirationTime);
+  }
+
+  var nextUnitOfWork = finishClassComponent(current, workInProgress, Component, shouldUpdate, hasContext, renderExpirationTime);
+
+  {
+    var inst = workInProgress.stateNode;
+
+    if (inst.props !== nextProps) {
+      if (!didWarnAboutReassigningProps) {
+        error('It looks like %s is reassigning its own `this.props` while rendering. ' + 'This is not supported and can lead to confusing bugs.', getComponentName(workInProgress.type) || 'a component');
+      }
+
+      didWarnAboutReassigningProps = true;
+    }
+  }
+
+  return nextUnitOfWork;
+}
+
+function finishClassComponent(current, workInProgress, Component, shouldUpdate, hasContext, renderExpirationTime) {
+  // Refs should update even if shouldComponentUpdate returns false
+  markRef(current, workInProgress);
+  var didCaptureError = (workInProgress.effectTag & DidCapture) !== NoEffect;
+
+  if (!shouldUpdate && !didCaptureError) {
+    // Context providers should defer to sCU for rendering
+    if (hasContext) {
+      invalidateContextProvider(workInProgress, Component, false);
+    }
+
+    return bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+  }
+
+  var instance = workInProgress.stateNode; // Rerender
+
+  ReactCurrentOwner$1.current = workInProgress;
+  var nextChildren;
+
+  if (didCaptureError && typeof Component.getDerivedStateFromError !== 'function') {
+    // If we captured an error, but getDerivedStateFromError is not defined,
+    // unmount all the children. componentDidCatch will schedule an update to
+    // re-render a fallback. This is temporary until we migrate everyone to
+    // the new API.
+    // TODO: Warn in a future release.
+    nextChildren = null;
+
+    {
+      stopProfilerTimerIfRunning();
+    }
+  } else {
+    {
+      setIsRendering(true);
+      nextChildren = instance.render();
+
+      if ( workInProgress.mode & StrictMode) {
+        instance.render();
+      }
+
+      setIsRendering(false);
+    }
+  } // React DevTools reads this flag.
+
+
+  workInProgress.effectTag |= PerformedWork;
+
+  if (current !== null && didCaptureError) {
+    // If we're recovering from an error, reconcile without reusing any of
+    // the existing children. Conceptually, the normal children and the children
+    // that are shown on error are two different sets, so we shouldn't reuse
+    // normal children even if their identities match.
+    forceUnmountCurrentAndReconcile(current, workInProgress, nextChildren, renderExpirationTime);
+  } else {
+    reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+  } // Memoize state using the values we just used to render.
+  // TODO: Restructure so we never read values from the instance.
+
+
+  workInProgress.memoizedState = instance.state; // The context might have changed so we need to recalculate it.
+
+  if (hasContext) {
+    invalidateContextProvider(workInProgress, Component, true);
+  }
+
+  return workInProgress.child;
+}
+
+function pushHostRootContext(workInProgress) {
+  var root = workInProgress.stateNode;
+
+  if (root.pendingContext) {
+    pushTopLevelContextObject(workInProgress, root.pendingContext, root.pendingContext !== root.context);
+  } else if (root.context) {
+    // Should always be set
+    pushTopLevelContextObject(workInProgress, root.context, false);
+  }
+
+  pushHostContainer(workInProgress, root.containerInfo);
+}
+
+function updateHostRoot(current, workInProgress, renderExpirationTime) {
+  pushHostRootContext(workInProgress);
+  var updateQueue = workInProgress.updateQueue;
+
+  if (!(current !== null && updateQueue !== null)) {
+    {
+      throw Error( "If the root does not have an updateQueue, we should have already bailed out. This error is likely caused by a bug in React. Please file an issue." );
+    }
+  }
+
+  var nextProps = workInProgress.pendingProps;
+  var prevState = workInProgress.memoizedState;
+  var prevChildren = prevState !== null ? prevState.element : null;
+  cloneUpdateQueue(current, workInProgress);
+  processUpdateQueue(workInProgress, nextProps, null, renderExpirationTime);
+  var nextState = workInProgress.memoizedState; // Caution: React DevTools currently depends on this property
+  // being called "element".
+
+  var nextChildren = nextState.element;
+
+  if (nextChildren === prevChildren) {
+    // If the state is the same as before, that's a bailout because we had
+    // no work that expires at this time.
+    resetHydrationState();
+    return bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+  }
+
+  var root = workInProgress.stateNode;
+
+  if (root.hydrate && enterHydrationState(workInProgress)) {
+    // If we don't have any current children this might be the first pass.
+    // We always try to hydrate. If this isn't a hydration pass there won't
+    // be any children to hydrate which is effectively the same thing as
+    // not hydrating.
+    var child = mountChildFibers(workInProgress, null, nextChildren, renderExpirationTime);
+    workInProgress.child = child;
+    var node = child;
+
+    while (node) {
+      // Mark each child as hydrating. This is a fast path to know whether this
+      // tree is part of a hydrating tree. This is used to determine if a child
+      // node has fully mounted yet, and for scheduling event replaying.
+      // Conceptually this is similar to Placement in that a new subtree is
+      // inserted into the React tree here. It just happens to not need DOM
+      // mutations because it already exists.
+      node.effectTag = node.effectTag & ~Placement | Hydrating;
+      node = node.sibling;
+    }
+  } else {
+    // Otherwise reset hydration state in case we aborted and resumed another
+    // root.
+    reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+    resetHydrationState();
+  }
+
+  return workInProgress.child;
+}
+
+function updateHostComponent(current, workInProgress, renderExpirationTime) {
+  pushHostContext(workInProgress);
+
+  if (current === null) {
+    tryToClaimNextHydratableInstance(workInProgress);
+  }
+
+  var type = workInProgress.type;
+  var nextProps = workInProgress.pendingProps;
+  var prevProps = current !== null ? current.memoizedProps : null;
+  var nextChildren = nextProps.children;
+  var isDirectTextChild = shouldSetTextContent(type, nextProps);
+
+  if (isDirectTextChild) {
+    // We special case a direct text child of a host node. This is a common
+    // case. We won't handle it as a reified child. We will instead handle
+    // this in the host environment that also has access to this prop. That
+    // avoids allocating another HostText fiber and traversing it.
+    nextChildren = null;
+  } else if (prevProps !== null && shouldSetTextContent(type, prevProps)) {
+    // If we're switching from a direct text child to a normal child, or to
+    // empty, we need to schedule the text content to be reset.
+    workInProgress.effectTag |= ContentReset;
+  }
+
+  markRef(current, workInProgress); // Check the host config to see if the children are offscreen/hidden.
+
+  if (workInProgress.mode & ConcurrentMode && renderExpirationTime !== Never && shouldDeprioritizeSubtree(type, nextProps)) {
+    {
+      markSpawnedWork(Never);
+    } // Schedule this fiber to re-render at offscreen priority. Then bailout.
+
+
+    workInProgress.expirationTime = workInProgress.childExpirationTime = Never;
+    return null;
+  }
+
+  reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+  return workInProgress.child;
+}
+
+function updateHostText(current, workInProgress) {
+  if (current === null) {
+    tryToClaimNextHydratableInstance(workInProgress);
+  } // Nothing to do here. This is terminal. We'll do the completion step
+  // immediately after.
+
+
+  return null;
+}
+
+function mountLazyComponent(_current, workInProgress, elementType, updateExpirationTime, renderExpirationTime) {
+  if (_current !== null) {
+    // A lazy component only mounts if it suspended inside a non-
+    // concurrent tree, in an inconsistent state. We want to treat it like
+    // a new mount, even though an empty version of it already committed.
+    // Disconnect the alternate pointers.
+    _current.alternate = null;
+    workInProgress.alternate = null; // Since this is conceptually a new fiber, schedule a Placement effect
+
+    workInProgress.effectTag |= Placement;
+  }
+
+  var props = workInProgress.pendingProps; // We can't start a User Timing measurement with correct label yet.
+  // Cancel and resume right after we know the tag.
+
+  cancelWorkTimer(workInProgress);
+  var Component = readLazyComponentType(elementType); // Store the unwrapped component in the type.
+
+  workInProgress.type = Component;
+  var resolvedTag = workInProgress.tag = resolveLazyComponentTag(Component);
+  startWorkTimer(workInProgress);
+  var resolvedProps = resolveDefaultProps(Component, props);
+  var child;
+
+  switch (resolvedTag) {
+    case FunctionComponent:
+      {
+        {
+          validateFunctionComponentInDev(workInProgress, Component);
+          workInProgress.type = Component = resolveFunctionForHotReloading(Component);
+        }
+
+        child = updateFunctionComponent(null, workInProgress, Component, resolvedProps, renderExpirationTime);
+        return child;
+      }
+
+    case ClassComponent:
+      {
+        {
+          workInProgress.type = Component = resolveClassForHotReloading(Component);
+        }
+
+        child = updateClassComponent(null, workInProgress, Component, resolvedProps, renderExpirationTime);
+        return child;
+      }
+
+    case ForwardRef:
+      {
+        {
+          workInProgress.type = Component = resolveForwardRefForHotReloading(Component);
+        }
+
+        child = updateForwardRef(null, workInProgress, Component, resolvedProps, renderExpirationTime);
+        return child;
+      }
+
+    case MemoComponent:
+      {
+        {
+          if (workInProgress.type !== workInProgress.elementType) {
+            var outerPropTypes = Component.propTypes;
+
+            if (outerPropTypes) {
+              checkPropTypes(outerPropTypes, resolvedProps, // Resolved for outer only
+              'prop', getComponentName(Component), getCurrentFiberStackInDev);
+            }
+          }
+        }
+
+        child = updateMemoComponent(null, workInProgress, Component, resolveDefaultProps(Component.type, resolvedProps), // The inner type can have defaults too
+        updateExpirationTime, renderExpirationTime);
+        return child;
+      }
+  }
+
+  var hint = '';
+
+  {
+    if (Component !== null && typeof Component === 'object' && Component.$$typeof === REACT_LAZY_TYPE) {
+      hint = ' Did you wrap a component in React.lazy() more than once?';
+    }
+  } // This message intentionally doesn't mention ForwardRef or MemoComponent
+  // because the fact that it's a separate type of work is an
+  // implementation detail.
+
+
+  {
+    {
+      throw Error( "Element type is invalid. Received a promise that resolves to: " + Component + ". Lazy element type must resolve to a class or function." + hint );
+    }
+  }
+}
+
+function mountIncompleteClassComponent(_current, workInProgress, Component, nextProps, renderExpirationTime) {
+  if (_current !== null) {
+    // An incomplete component only mounts if it suspended inside a non-
+    // concurrent tree, in an inconsistent state. We want to treat it like
+    // a new mount, even though an empty version of it already committed.
+    // Disconnect the alternate pointers.
+    _current.alternate = null;
+    workInProgress.alternate = null; // Since this is conceptually a new fiber, schedule a Placement effect
+
+    workInProgress.effectTag |= Placement;
+  } // Promote the fiber to a class and try rendering again.
+
+
+  workInProgress.tag = ClassComponent; // The rest of this function is a fork of `updateClassComponent`
+  // Push context providers early to prevent context stack mismatches.
+  // During mounting we don't know the child context yet as the instance doesn't exist.
+  // We will invalidate the child context in finishClassComponent() right after rendering.
+
+  var hasContext;
+
+  if (isContextProvider(Component)) {
+    hasContext = true;
+    pushContextProvider(workInProgress);
+  } else {
+    hasContext = false;
+  }
+
+  prepareToReadContext(workInProgress, renderExpirationTime);
+  constructClassInstance(workInProgress, Component, nextProps);
+  mountClassInstance(workInProgress, Component, nextProps, renderExpirationTime);
+  return finishClassComponent(null, workInProgress, Component, true, hasContext, renderExpirationTime);
+}
+
+function mountIndeterminateComponent(_current, workInProgress, Component, renderExpirationTime) {
+  if (_current !== null) {
+    // An indeterminate component only mounts if it suspended inside a non-
+    // concurrent tree, in an inconsistent state. We want to treat it like
+    // a new mount, even though an empty version of it already committed.
+    // Disconnect the alternate pointers.
+    _current.alternate = null;
+    workInProgress.alternate = null; // Since this is conceptually a new fiber, schedule a Placement effect
+
+    workInProgress.effectTag |= Placement;
+  }
+
+  var props = workInProgress.pendingProps;
+  var context;
+
+  {
+    var unmaskedContext = getUnmaskedContext(workInProgress, Component, false);
+    context = getMaskedContext(workInProgress, unmaskedContext);
+  }
+
+  prepareToReadContext(workInProgress, renderExpirationTime);
+  var value;
+
+  {
+    if (Component.prototype && typeof Component.prototype.render === 'function') {
+      var componentName = getComponentName(Component) || 'Unknown';
+
+      if (!didWarnAboutBadClass[componentName]) {
+        error("The <%s /> component appears to have a render method, but doesn't extend React.Component. " + 'This is likely to cause errors. Change %s to extend React.Component instead.', componentName, componentName);
+
+        didWarnAboutBadClass[componentName] = true;
+      }
+    }
+
+    if (workInProgress.mode & StrictMode) {
+      ReactStrictModeWarnings.recordLegacyContextWarning(workInProgress, null);
+    }
+
+    setIsRendering(true);
+    ReactCurrentOwner$1.current = workInProgress;
+    value = renderWithHooks(null, workInProgress, Component, props, context, renderExpirationTime);
+    setIsRendering(false);
+  } // React DevTools reads this flag.
+
+
+  workInProgress.effectTag |= PerformedWork;
+
+  if (typeof value === 'object' && value !== null && typeof value.render === 'function' && value.$$typeof === undefined) {
+    {
+      var _componentName = getComponentName(Component) || 'Unknown';
+
+      if (!didWarnAboutModulePatternComponent[_componentName]) {
+        error('The <%s /> component appears to be a function component that returns a class instance. ' + 'Change %s to a class that extends React.Component instead. ' + "If you can't use a class try assigning the prototype on the function as a workaround. " + "`%s.prototype = React.Component.prototype`. Don't use an arrow function since it " + 'cannot be called with `new` by React.', _componentName, _componentName, _componentName);
+
+        didWarnAboutModulePatternComponent[_componentName] = true;
+      }
+    } // Proceed under the assumption that this is a class instance
+
+
+    workInProgress.tag = ClassComponent; // Throw out any hooks that were used.
+
+    workInProgress.memoizedState = null;
+    workInProgress.updateQueue = null; // Push context providers early to prevent context stack mismatches.
+    // During mounting we don't know the child context yet as the instance doesn't exist.
+    // We will invalidate the child context in finishClassComponent() right after rendering.
+
+    var hasContext = false;
+
+    if (isContextProvider(Component)) {
+      hasContext = true;
+      pushContextProvider(workInProgress);
+    } else {
+      hasContext = false;
+    }
+
+    workInProgress.memoizedState = value.state !== null && value.state !== undefined ? value.state : null;
+    initializeUpdateQueue(workInProgress);
+    var getDerivedStateFromProps = Component.getDerivedStateFromProps;
+
+    if (typeof getDerivedStateFromProps === 'function') {
+      applyDerivedStateFromProps(workInProgress, Component, getDerivedStateFromProps, props);
+    }
+
+    adoptClassInstance(workInProgress, value);
+    mountClassInstance(workInProgress, Component, props, renderExpirationTime);
+    return finishClassComponent(null, workInProgress, Component, true, hasContext, renderExpirationTime);
+  } else {
+    // Proceed under the assumption that this is a function component
+    workInProgress.tag = FunctionComponent;
+
+    {
+
+      if ( workInProgress.mode & StrictMode) {
+        // Only double-render components with Hooks
+        if (workInProgress.memoizedState !== null) {
+          value = renderWithHooks(null, workInProgress, Component, props, context, renderExpirationTime);
+        }
+      }
+    }
+
+    reconcileChildren(null, workInProgress, value, renderExpirationTime);
+
+    {
+      validateFunctionComponentInDev(workInProgress, Component);
+    }
+
+    return workInProgress.child;
+  }
+}
+
+function validateFunctionComponentInDev(workInProgress, Component) {
+  {
+    if (Component) {
+      if (Component.childContextTypes) {
+        error('%s(...): childContextTypes cannot be defined on a function component.', Component.displayName || Component.name || 'Component');
+      }
+    }
+
+    if (workInProgress.ref !== null) {
+      var info = '';
+      var ownerName = getCurrentFiberOwnerNameInDevOrNull();
+
+      if (ownerName) {
+        info += '\n\nCheck the render method of `' + ownerName + '`.';
+      }
+
+      var warningKey = ownerName || workInProgress._debugID || '';
+      var debugSource = workInProgress._debugSource;
+
+      if (debugSource) {
+        warningKey = debugSource.fileName + ':' + debugSource.lineNumber;
+      }
+
+      if (!didWarnAboutFunctionRefs[warningKey]) {
+        didWarnAboutFunctionRefs[warningKey] = true;
+
+        error('Function components cannot be given refs. ' + 'Attempts to access this ref will fail. ' + 'Did you mean to use React.forwardRef()?%s', info);
+      }
+    }
+
+    if (typeof Component.getDerivedStateFromProps === 'function') {
+      var _componentName2 = getComponentName(Component) || 'Unknown';
+
+      if (!didWarnAboutGetDerivedStateOnFunctionComponent[_componentName2]) {
+        error('%s: Function components do not support getDerivedStateFromProps.', _componentName2);
+
+        didWarnAboutGetDerivedStateOnFunctionComponent[_componentName2] = true;
+      }
+    }
+
+    if (typeof Component.contextType === 'object' && Component.contextType !== null) {
+      var _componentName3 = getComponentName(Component) || 'Unknown';
+
+      if (!didWarnAboutContextTypeOnFunctionComponent[_componentName3]) {
+        error('%s: Function components do not support contextType.', _componentName3);
+
+        didWarnAboutContextTypeOnFunctionComponent[_componentName3] = true;
+      }
+    }
+  }
+}
+
+var SUSPENDED_MARKER = {
+  dehydrated: null,
+  retryTime: NoWork
+};
+
+function shouldRemainOnFallback(suspenseContext, current, workInProgress) {
+  // If the context is telling us that we should show a fallback, and we're not
+  // already showing content, then we should show the fallback instead.
+  return hasSuspenseContext(suspenseContext, ForceSuspenseFallback) && (current === null || current.memoizedState !== null);
+}
+
+function updateSuspenseComponent(current, workInProgress, renderExpirationTime) {
+  var mode = workInProgress.mode;
+  var nextProps = workInProgress.pendingProps; // This is used by DevTools to force a boundary to suspend.
+
+  {
+    if (shouldSuspend(workInProgress)) {
+      workInProgress.effectTag |= DidCapture;
+    }
+  }
+
+  var suspenseContext = suspenseStackCursor.current;
+  var nextDidTimeout = false;
+  var didSuspend = (workInProgress.effectTag & DidCapture) !== NoEffect;
+
+  if (didSuspend || shouldRemainOnFallback(suspenseContext, current)) {
+    // Something in this boundary's subtree already suspended. Switch to
+    // rendering the fallback children.
+    nextDidTimeout = true;
+    workInProgress.effectTag &= ~DidCapture;
+  } else {
+    // Attempting the main content
+    if (current === null || current.memoizedState !== null) {
+      // This is a new mount or this boundary is already showing a fallback state.
+      // Mark this subtree context as having at least one invisible parent that could
+      // handle the fallback state.
+      // Boundaries without fallbacks or should be avoided are not considered since
+      // they cannot handle preferred fallback states.
+      if (nextProps.fallback !== undefined && nextProps.unstable_avoidThisFallback !== true) {
+        suspenseContext = addSubtreeSuspenseContext(suspenseContext, InvisibleParentSuspenseContext);
+      }
+    }
+  }
+
+  suspenseContext = setDefaultShallowSuspenseContext(suspenseContext);
+  pushSuspenseContext(workInProgress, suspenseContext); // This next part is a bit confusing. If the children timeout, we switch to
+  // showing the fallback children in place of the "primary" children.
+  // However, we don't want to delete the primary children because then their
+  // state will be lost (both the React state and the host state, e.g.
+  // uncontrolled form inputs). Instead we keep them mounted and hide them.
+  // Both the fallback children AND the primary children are rendered at the
+  // same time. Once the primary children are un-suspended, we can delete
+  // the fallback children — don't need to preserve their state.
+  //
+  // The two sets of children are siblings in the host environment, but
+  // semantically, for purposes of reconciliation, they are two separate sets.
+  // So we store them using two fragment fibers.
+  //
+  // However, we want to avoid allocating extra fibers for every placeholder.
+  // They're only necessary when the children time out, because that's the
+  // only time when both sets are mounted.
+  //
+  // So, the extra fragment fibers are only used if the children time out.
+  // Otherwise, we render the primary children directly. This requires some
+  // custom reconciliation logic to preserve the state of the primary
+  // children. It's essentially a very basic form of re-parenting.
+
+  if (current === null) {
+    // If we're currently hydrating, try to hydrate this boundary.
+    // But only if this has a fallback.
+    if (nextProps.fallback !== undefined) {
+      tryToClaimNextHydratableInstance(workInProgress); // This could've been a dehydrated suspense component.
+    } // This is the initial mount. This branch is pretty simple because there's
+    // no previous state that needs to be preserved.
+
+
+    if (nextDidTimeout) {
+      // Mount separate fragments for primary and fallback children.
+      var nextFallbackChildren = nextProps.fallback;
+      var primaryChildFragment = createFiberFromFragment(null, mode, NoWork, null);
+      primaryChildFragment.return = workInProgress;
+
+      if ((workInProgress.mode & BlockingMode) === NoMode) {
+        // Outside of blocking mode, we commit the effects from the
+        // partially completed, timed-out tree, too.
+        var progressedState = workInProgress.memoizedState;
+        var progressedPrimaryChild = progressedState !== null ? workInProgress.child.child : workInProgress.child;
+        primaryChildFragment.child = progressedPrimaryChild;
+        var progressedChild = progressedPrimaryChild;
+
+        while (progressedChild !== null) {
+          progressedChild.return = primaryChildFragment;
+          progressedChild = progressedChild.sibling;
+        }
+      }
+
+      var fallbackChildFragment = createFiberFromFragment(nextFallbackChildren, mode, renderExpirationTime, null);
+      fallbackChildFragment.return = workInProgress;
+      primaryChildFragment.sibling = fallbackChildFragment; // Skip the primary children, and continue working on the
+      // fallback children.
+
+      workInProgress.memoizedState = SUSPENDED_MARKER;
+      workInProgress.child = primaryChildFragment;
+      return fallbackChildFragment;
+    } else {
+      // Mount the primary children without an intermediate fragment fiber.
+      var nextPrimaryChildren = nextProps.children;
+      workInProgress.memoizedState = null;
+      return workInProgress.child = mountChildFibers(workInProgress, null, nextPrimaryChildren, renderExpirationTime);
+    }
+  } else {
+    // This is an update. This branch is more complicated because we need to
+    // ensure the state of the primary children is preserved.
+    var prevState = current.memoizedState;
+
+    if (prevState !== null) {
+      // wrapped in a fragment fiber.
+
+
+      var currentPrimaryChildFragment = current.child;
+      var currentFallbackChildFragment = currentPrimaryChildFragment.sibling;
+
+      if (nextDidTimeout) {
+        // Still timed out. Reuse the current primary children by cloning
+        // its fragment. We're going to skip over these entirely.
+        var _nextFallbackChildren2 = nextProps.fallback;
+
+        var _primaryChildFragment2 = createWorkInProgress(currentPrimaryChildFragment, currentPrimaryChildFragment.pendingProps);
+
+        _primaryChildFragment2.return = workInProgress;
+
+        if ((workInProgress.mode & BlockingMode) === NoMode) {
+          // Outside of blocking mode, we commit the effects from the
+          // partially completed, timed-out tree, too.
+          var _progressedState = workInProgress.memoizedState;
+
+          var _progressedPrimaryChild = _progressedState !== null ? workInProgress.child.child : workInProgress.child;
+
+          if (_progressedPrimaryChild !== currentPrimaryChildFragment.child) {
+            _primaryChildFragment2.child = _progressedPrimaryChild;
+            var _progressedChild2 = _progressedPrimaryChild;
+
+            while (_progressedChild2 !== null) {
+              _progressedChild2.return = _primaryChildFragment2;
+              _progressedChild2 = _progressedChild2.sibling;
+            }
+          }
+        } // Because primaryChildFragment is a new fiber that we're inserting as the
+        // parent of a new tree, we need to set its treeBaseDuration.
+
+
+        if ( workInProgress.mode & ProfileMode) {
+          // treeBaseDuration is the sum of all the child tree base durations.
+          var _treeBaseDuration = 0;
+          var _hiddenChild = _primaryChildFragment2.child;
+
+          while (_hiddenChild !== null) {
+            _treeBaseDuration += _hiddenChild.treeBaseDuration;
+            _hiddenChild = _hiddenChild.sibling;
+          }
+
+          _primaryChildFragment2.treeBaseDuration = _treeBaseDuration;
+        } // Clone the fallback child fragment, too. These we'll continue
+        // working on.
+
+
+        var _fallbackChildFragment2 = createWorkInProgress(currentFallbackChildFragment, _nextFallbackChildren2);
+
+        _fallbackChildFragment2.return = workInProgress;
+        _primaryChildFragment2.sibling = _fallbackChildFragment2;
+        _primaryChildFragment2.childExpirationTime = NoWork; // Skip the primary children, and continue working on the
+        // fallback children.
+
+        workInProgress.memoizedState = SUSPENDED_MARKER;
+        workInProgress.child = _primaryChildFragment2;
+        return _fallbackChildFragment2;
+      } else {
+        // No longer suspended. Switch back to showing the primary children,
+        // and remove the intermediate fragment fiber.
+        var _nextPrimaryChildren = nextProps.children;
+        var currentPrimaryChild = currentPrimaryChildFragment.child;
+        var primaryChild = reconcileChildFibers(workInProgress, currentPrimaryChild, _nextPrimaryChildren, renderExpirationTime); // If this render doesn't suspend, we need to delete the fallback
+        // children. Wait until the complete phase, after we've confirmed the
+        // fallback is no longer needed.
+        // TODO: Would it be better to store the fallback fragment on
+        // the stateNode?
+        // Continue rendering the children, like we normally do.
+
+        workInProgress.memoizedState = null;
+        return workInProgress.child = primaryChild;
+      }
+    } else {
+      // The current tree has not already timed out. That means the primary
+      // children are not wrapped in a fragment fiber.
+      var _currentPrimaryChild = current.child;
+
+      if (nextDidTimeout) {
+        // Timed out. Wrap the children in a fragment fiber to keep them
+        // separate from the fallback children.
+        var _nextFallbackChildren3 = nextProps.fallback;
+
+        var _primaryChildFragment3 = createFiberFromFragment( // It shouldn't matter what the pending props are because we aren't
+        // going to render this fragment.
+        null, mode, NoWork, null);
+
+        _primaryChildFragment3.return = workInProgress;
+        _primaryChildFragment3.child = _currentPrimaryChild;
+
+        if (_currentPrimaryChild !== null) {
+          _currentPrimaryChild.return = _primaryChildFragment3;
+        } // Even though we're creating a new fiber, there are no new children,
+        // because we're reusing an already mounted tree. So we don't need to
+        // schedule a placement.
+        // primaryChildFragment.effectTag |= Placement;
+
+
+        if ((workInProgress.mode & BlockingMode) === NoMode) {
+          // Outside of blocking mode, we commit the effects from the
+          // partially completed, timed-out tree, too.
+          var _progressedState2 = workInProgress.memoizedState;
+
+          var _progressedPrimaryChild2 = _progressedState2 !== null ? workInProgress.child.child : workInProgress.child;
+
+          _primaryChildFragment3.child = _progressedPrimaryChild2;
+          var _progressedChild3 = _progressedPrimaryChild2;
+
+          while (_progressedChild3 !== null) {
+            _progressedChild3.return = _primaryChildFragment3;
+            _progressedChild3 = _progressedChild3.sibling;
+          }
+        } // Because primaryChildFragment is a new fiber that we're inserting as the
+        // parent of a new tree, we need to set its treeBaseDuration.
+
+
+        if ( workInProgress.mode & ProfileMode) {
+          // treeBaseDuration is the sum of all the child tree base durations.
+          var _treeBaseDuration2 = 0;
+          var _hiddenChild2 = _primaryChildFragment3.child;
+
+          while (_hiddenChild2 !== null) {
+            _treeBaseDuration2 += _hiddenChild2.treeBaseDuration;
+            _hiddenChild2 = _hiddenChild2.sibling;
+          }
+
+          _primaryChildFragment3.treeBaseDuration = _treeBaseDuration2;
+        } // Create a fragment from the fallback children, too.
+
+
+        var _fallbackChildFragment3 = createFiberFromFragment(_nextFallbackChildren3, mode, renderExpirationTime, null);
+
+        _fallbackChildFragment3.return = workInProgress;
+        _primaryChildFragment3.sibling = _fallbackChildFragment3;
+        _fallbackChildFragment3.effectTag |= Placement;
+        _primaryChildFragment3.childExpirationTime = NoWork; // Skip the primary children, and continue working on the
+        // fallback children.
+
+        workInProgress.memoizedState = SUSPENDED_MARKER;
+        workInProgress.child = _primaryChildFragment3;
+        return _fallbackChildFragment3;
+      } else {
+        // Still haven't timed out. Continue rendering the children, like we
+        // normally do.
+        workInProgress.memoizedState = null;
+        var _nextPrimaryChildren2 = nextProps.children;
+        return workInProgress.child = reconcileChildFibers(workInProgress, _currentPrimaryChild, _nextPrimaryChildren2, renderExpirationTime);
+      }
+    }
+  }
+}
+
+function scheduleWorkOnFiber(fiber, renderExpirationTime) {
+  if (fiber.expirationTime < renderExpirationTime) {
+    fiber.expirationTime = renderExpirationTime;
+  }
+
+  var alternate = fiber.alternate;
+
+  if (alternate !== null && alternate.expirationTime < renderExpirationTime) {
+    alternate.expirationTime = renderExpirationTime;
+  }
+
+  scheduleWorkOnParentPath(fiber.return, renderExpirationTime);
+}
+
+function propagateSuspenseContextChange(workInProgress, firstChild, renderExpirationTime) {
+  // Mark any Suspense boundaries with fallbacks as having work to do.
+  // If they were previously forced into fallbacks, they may now be able
+  // to unblock.
+  var node = firstChild;
+
+  while (node !== null) {
+    if (node.tag === SuspenseComponent) {
+      var state = node.memoizedState;
+
+      if (state !== null) {
+        scheduleWorkOnFiber(node, renderExpirationTime);
+      }
+    } else if (node.tag === SuspenseListComponent) {
+      // If the tail is hidden there might not be an Suspense boundaries
+      // to schedule work on. In this case we have to schedule it on the
+      // list itself.
+      // We don't have to traverse to the children of the list since
+      // the list will propagate the change when it rerenders.
+      scheduleWorkOnFiber(node, renderExpirationTime);
+    } else if (node.child !== null) {
+      node.child.return = node;
+      node = node.child;
+      continue;
+    }
+
+    if (node === workInProgress) {
+      return;
+    }
+
+    while (node.sibling === null) {
+      if (node.return === null || node.return === workInProgress) {
+        return;
+      }
+
+      node = node.return;
+    }
+
+    node.sibling.return = node.return;
+    node = node.sibling;
+  }
+}
+
+function findLastContentRow(firstChild) {
+  // This is going to find the last row among these children that is already
+  // showing content on the screen, as opposed to being in fallback state or
+  // new. If a row has multiple Suspense boundaries, any of them being in the
+  // fallback state, counts as the whole row being in a fallback state.
+  // Note that the "rows" will be workInProgress, but any nested children
+  // will still be current since we haven't rendered them yet. The mounted
+  // order may not be the same as the new order. We use the new order.
+  var row = firstChild;
+  var lastContentRow = null;
+
+  while (row !== null) {
+    var currentRow = row.alternate; // New rows can't be content rows.
+
+    if (currentRow !== null && findFirstSuspended(currentRow) === null) {
+      lastContentRow = row;
+    }
+
+    row = row.sibling;
+  }
+
+  return lastContentRow;
+}
+
+function validateRevealOrder(revealOrder) {
+  {
+    if (revealOrder !== undefined && revealOrder !== 'forwards' && revealOrder !== 'backwards' && revealOrder !== 'together' && !didWarnAboutRevealOrder[revealOrder]) {
+      didWarnAboutRevealOrder[revealOrder] = true;
+
+      if (typeof revealOrder === 'string') {
+        switch (revealOrder.toLowerCase()) {
+          case 'together':
+          case 'forwards':
+          case 'backwards':
+            {
+              error('"%s" is not a valid value for revealOrder on <SuspenseList />. ' + 'Use lowercase "%s" instead.', revealOrder, revealOrder.toLowerCase());
+
+              break;
+            }
+
+          case 'forward':
+          case 'backward':
+            {
+              error('"%s" is not a valid value for revealOrder on <SuspenseList />. ' + 'React uses the -s suffix in the spelling. Use "%ss" instead.', revealOrder, revealOrder.toLowerCase());
+
+              break;
+            }
+
+          default:
+            error('"%s" is not a supported revealOrder on <SuspenseList />. ' + 'Did you mean "together", "forwards" or "backwards"?', revealOrder);
+
+            break;
+        }
+      } else {
+        error('%s is not a supported value for revealOrder on <SuspenseList />. ' + 'Did you mean "together", "forwards" or "backwards"?', revealOrder);
+      }
+    }
+  }
+}
+
+function validateTailOptions(tailMode, revealOrder) {
+  {
+    if (tailMode !== undefined && !didWarnAboutTailOptions[tailMode]) {
+      if (tailMode !== 'collapsed' && tailMode !== 'hidden') {
+        didWarnAboutTailOptions[tailMode] = true;
+
+        error('"%s" is not a supported value for tail on <SuspenseList />. ' + 'Did you mean "collapsed" or "hidden"?', tailMode);
+      } else if (revealOrder !== 'forwards' && revealOrder !== 'backwards') {
+        didWarnAboutTailOptions[tailMode] = true;
+
+        error('<SuspenseList tail="%s" /> is only valid if revealOrder is ' + '"forwards" or "backwards". ' + 'Did you mean to specify revealOrder="forwards"?', tailMode);
+      }
+    }
+  }
+}
+
+function validateSuspenseListNestedChild(childSlot, index) {
+  {
+    var isArray = Array.isArray(childSlot);
+    var isIterable = !isArray && typeof getIteratorFn(childSlot) === 'function';
+
+    if (isArray || isIterable) {
+      var type = isArray ? 'array' : 'iterable';
+
+      error('A nested %s was passed to row #%s in <SuspenseList />. Wrap it in ' + 'an additional SuspenseList to configure its revealOrder: ' + '<SuspenseList revealOrder=...> ... ' + '<SuspenseList revealOrder=...>{%s}</SuspenseList> ... ' + '</SuspenseList>', type, index, type);
+
+      return false;
+    }
+  }
+
+  return true;
+}
+
+function validateSuspenseListChildren(children, revealOrder) {
+  {
+    if ((revealOrder === 'forwards' || revealOrder === 'backwards') && children !== undefined && children !== null && children !== false) {
+      if (Array.isArray(children)) {
+        for (var i = 0; i < children.length; i++) {
+          if (!validateSuspenseListNestedChild(children[i], i)) {
+            return;
+          }
+        }
+      } else {
+        var iteratorFn = getIteratorFn(children);
+
+        if (typeof iteratorFn === 'function') {
+          var childrenIterator = iteratorFn.call(children);
+
+          if (childrenIterator) {
+            var step = childrenIterator.next();
+            var _i = 0;
+
+            for (; !step.done; step = childrenIterator.next()) {
+              if (!validateSuspenseListNestedChild(step.value, _i)) {
+                return;
+              }
+
+              _i++;
+            }
+          }
+        } else {
+          error('A single row was passed to a <SuspenseList revealOrder="%s" />. ' + 'This is not useful since it needs multiple rows. ' + 'Did you mean to pass multiple children or an array?', revealOrder);
+        }
+      }
+    }
+  }
+}
+
+function initSuspenseListRenderState(workInProgress, isBackwards, tail, lastContentRow, tailMode, lastEffectBeforeRendering) {
+  var renderState = workInProgress.memoizedState;
+
+  if (renderState === null) {
+    workInProgress.memoizedState = {
+      isBackwards: isBackwards,
+      rendering: null,
+      renderingStartTime: 0,
+      last: lastContentRow,
+      tail: tail,
+      tailExpiration: 0,
+      tailMode: tailMode,
+      lastEffect: lastEffectBeforeRendering
+    };
+  } else {
+    // We can reuse the existing object from previous renders.
+    renderState.isBackwards = isBackwards;
+    renderState.rendering = null;
+    renderState.renderingStartTime = 0;
+    renderState.last = lastContentRow;
+    renderState.tail = tail;
+    renderState.tailExpiration = 0;
+    renderState.tailMode = tailMode;
+    renderState.lastEffect = lastEffectBeforeRendering;
+  }
+} // This can end up rendering this component multiple passes.
+// The first pass splits the children fibers into two sets. A head and tail.
+// We first render the head. If anything is in fallback state, we do another
+// pass through beginWork to rerender all children (including the tail) with
+// the force suspend context. If the first render didn't have anything in
+// in fallback state. Then we render each row in the tail one-by-one.
+// That happens in the completeWork phase without going back to beginWork.
+
+
+function updateSuspenseListComponent(current, workInProgress, renderExpirationTime) {
+  var nextProps = workInProgress.pendingProps;
+  var revealOrder = nextProps.revealOrder;
+  var tailMode = nextProps.tail;
+  var newChildren = nextProps.children;
+  validateRevealOrder(revealOrder);
+  validateTailOptions(tailMode, revealOrder);
+  validateSuspenseListChildren(newChildren, revealOrder);
+  reconcileChildren(current, workInProgress, newChildren, renderExpirationTime);
+  var suspenseContext = suspenseStackCursor.current;
+  var shouldForceFallback = hasSuspenseContext(suspenseContext, ForceSuspenseFallback);
+
+  if (shouldForceFallback) {
+    suspenseContext = setShallowSuspenseContext(suspenseContext, ForceSuspenseFallback);
+    workInProgress.effectTag |= DidCapture;
+  } else {
+    var didSuspendBefore = current !== null && (current.effectTag & DidCapture) !== NoEffect;
+
+    if (didSuspendBefore) {
+      // If we previously forced a fallback, we need to schedule work
+      // on any nested boundaries to let them know to try to render
+      // again. This is the same as context updating.
+      propagateSuspenseContextChange(workInProgress, workInProgress.child, renderExpirationTime);
+    }
+
+    suspenseContext = setDefaultShallowSuspenseContext(suspenseContext);
+  }
+
+  pushSuspenseContext(workInProgress, suspenseContext);
+
+  if ((workInProgress.mode & BlockingMode) === NoMode) {
+    // Outside of blocking mode, SuspenseList doesn't work so we just
+    // use make it a noop by treating it as the default revealOrder.
+    workInProgress.memoizedState = null;
+  } else {
+    switch (revealOrder) {
+      case 'forwards':
+        {
+          var lastContentRow = findLastContentRow(workInProgress.child);
+          var tail;
+
+          if (lastContentRow === null) {
+            // The whole list is part of the tail.
+            // TODO: We could fast path by just rendering the tail now.
+            tail = workInProgress.child;
+            workInProgress.child = null;
+          } else {
+            // Disconnect the tail rows after the content row.
+            // We're going to render them separately later.
+            tail = lastContentRow.sibling;
+            lastContentRow.sibling = null;
+          }
+
+          initSuspenseListRenderState(workInProgress, false, // isBackwards
+          tail, lastContentRow, tailMode, workInProgress.lastEffect);
+          break;
+        }
+
+      case 'backwards':
+        {
+          // We're going to find the first row that has existing content.
+          // At the same time we're going to reverse the list of everything
+          // we pass in the meantime. That's going to be our tail in reverse
+          // order.
+          var _tail = null;
+          var row = workInProgress.child;
+          workInProgress.child = null;
+
+          while (row !== null) {
+            var currentRow = row.alternate; // New rows can't be content rows.
+
+            if (currentRow !== null && findFirstSuspended(currentRow) === null) {
+              // This is the beginning of the main content.
+              workInProgress.child = row;
+              break;
+            }
+
+            var nextRow = row.sibling;
+            row.sibling = _tail;
+            _tail = row;
+            row = nextRow;
+          } // TODO: If workInProgress.child is null, we can continue on the tail immediately.
+
+
+          initSuspenseListRenderState(workInProgress, true, // isBackwards
+          _tail, null, // last
+          tailMode, workInProgress.lastEffect);
+          break;
+        }
+
+      case 'together':
+        {
+          initSuspenseListRenderState(workInProgress, false, // isBackwards
+          null, // tail
+          null, // last
+          undefined, workInProgress.lastEffect);
+          break;
+        }
+
+      default:
+        {
+          // The default reveal order is the same as not having
+          // a boundary.
+          workInProgress.memoizedState = null;
+        }
+    }
+  }
+
+  return workInProgress.child;
+}
+
+function updatePortalComponent(current, workInProgress, renderExpirationTime) {
+  pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo);
+  var nextChildren = workInProgress.pendingProps;
+
+  if (current === null) {
+    // Portals are special because we don't append the children during mount
+    // but at commit. Therefore we need to track insertions which the normal
+    // flow doesn't do during mount. This doesn't happen at the root because
+    // the root always starts with a "current" with a null child.
+    // TODO: Consider unifying this with how the root works.
+    workInProgress.child = reconcileChildFibers(workInProgress, null, nextChildren, renderExpirationTime);
+  } else {
+    reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+  }
+
+  return workInProgress.child;
+}
+
+function updateContextProvider(current, workInProgress, renderExpirationTime) {
+  var providerType = workInProgress.type;
+  var context = providerType._context;
+  var newProps = workInProgress.pendingProps;
+  var oldProps = workInProgress.memoizedProps;
+  var newValue = newProps.value;
+
+  {
+    var providerPropTypes = workInProgress.type.propTypes;
+
+    if (providerPropTypes) {
+      checkPropTypes(providerPropTypes, newProps, 'prop', 'Context.Provider', getCurrentFiberStackInDev);
+    }
+  }
+
+  pushProvider(workInProgress, newValue);
+
+  if (oldProps !== null) {
+    var oldValue = oldProps.value;
+    var changedBits = calculateChangedBits(context, newValue, oldValue);
+
+    if (changedBits === 0) {
+      // No change. Bailout early if children are the same.
+      if (oldProps.children === newProps.children && !hasContextChanged()) {
+        return bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+      }
+    } else {
+      // The context value changed. Search for matching consumers and schedule
+      // them to update.
+      propagateContextChange(workInProgress, context, changedBits, renderExpirationTime);
+    }
+  }
+
+  var newChildren = newProps.children;
+  reconcileChildren(current, workInProgress, newChildren, renderExpirationTime);
+  return workInProgress.child;
+}
+
+var hasWarnedAboutUsingContextAsConsumer = false;
+
+function updateContextConsumer(current, workInProgress, renderExpirationTime) {
+  var context = workInProgress.type; // The logic below for Context differs depending on PROD or DEV mode. In
+  // DEV mode, we create a separate object for Context.Consumer that acts
+  // like a proxy to Context. This proxy object adds unnecessary code in PROD
+  // so we use the old behaviour (Context.Consumer references Context) to
+  // reduce size and overhead. The separate object references context via
+  // a property called "_context", which also gives us the ability to check
+  // in DEV mode if this property exists or not and warn if it does not.
+
+  {
+    if (context._context === undefined) {
+      // This may be because it's a Context (rather than a Consumer).
+      // Or it may be because it's older React where they're the same thing.
+      // We only want to warn if we're sure it's a new React.
+      if (context !== context.Consumer) {
+        if (!hasWarnedAboutUsingContextAsConsumer) {
+          hasWarnedAboutUsingContextAsConsumer = true;
+
+          error('Rendering <Context> directly is not supported and will be removed in ' + 'a future major release. Did you mean to render <Context.Consumer> instead?');
+        }
+      }
+    } else {
+      context = context._context;
+    }
+  }
+
+  var newProps = workInProgress.pendingProps;
+  var render = newProps.children;
+
+  {
+    if (typeof render !== 'function') {
+      error('A context consumer was rendered with multiple children, or a child ' + "that isn't a function. A context consumer expects a single child " + 'that is a function. If you did pass a function, make sure there ' + 'is no trailing or leading whitespace around it.');
+    }
+  }
+
+  prepareToReadContext(workInProgress, renderExpirationTime);
+  var newValue = readContext(context, newProps.unstable_observedBits);
+  var newChildren;
+
+  {
+    ReactCurrentOwner$1.current = workInProgress;
+    setIsRendering(true);
+    newChildren = render(newValue);
+    setIsRendering(false);
+  } // React DevTools reads this flag.
+
+
+  workInProgress.effectTag |= PerformedWork;
+  reconcileChildren(current, workInProgress, newChildren, renderExpirationTime);
+  return workInProgress.child;
+}
+
+function markWorkInProgressReceivedUpdate() {
+  didReceiveUpdate = true;
+}
+
+function bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime) {
+  cancelWorkTimer(workInProgress);
+
+  if (current !== null) {
+    // Reuse previous dependencies
+    workInProgress.dependencies = current.dependencies;
+  }
+
+  {
+    // Don't update "base" render times for bailouts.
+    stopProfilerTimerIfRunning();
+  }
+
+  var updateExpirationTime = workInProgress.expirationTime;
+
+  if (updateExpirationTime !== NoWork) {
+    markUnprocessedUpdateTime(updateExpirationTime);
+  } // Check if the children have any pending work.
+
+
+  var childExpirationTime = workInProgress.childExpirationTime;
+
+  if (childExpirationTime < renderExpirationTime) {
+    // The children don't have any work either. We can skip them.
+    // TODO: Once we add back resuming, we should check if the children are
+    // a work-in-progress set. If so, we need to transfer their effects.
+    return null;
+  } else {
+    // This fiber doesn't have work, but its subtree does. Clone the child
+    // fibers and continue.
+    cloneChildFibers(current, workInProgress);
+    return workInProgress.child;
+  }
+}
+
+function remountFiber(current, oldWorkInProgress, newWorkInProgress) {
+  {
+    var returnFiber = oldWorkInProgress.return;
+
+    if (returnFiber === null) {
+      throw new Error('Cannot swap the root fiber.');
+    } // Disconnect from the old current.
+    // It will get deleted.
+
+
+    current.alternate = null;
+    oldWorkInProgress.alternate = null; // Connect to the new tree.
+
+    newWorkInProgress.index = oldWorkInProgress.index;
+    newWorkInProgress.sibling = oldWorkInProgress.sibling;
+    newWorkInProgress.return = oldWorkInProgress.return;
+    newWorkInProgress.ref = oldWorkInProgress.ref; // Replace the child/sibling pointers above it.
+
+    if (oldWorkInProgress === returnFiber.child) {
+      returnFiber.child = newWorkInProgress;
+    } else {
+      var prevSibling = returnFiber.child;
+
+      if (prevSibling === null) {
+        throw new Error('Expected parent to have a child.');
+      }
+
+      while (prevSibling.sibling !== oldWorkInProgress) {
+        prevSibling = prevSibling.sibling;
+
+        if (prevSibling === null) {
+          throw new Error('Expected to find the previous sibling.');
+        }
+      }
+
+      prevSibling.sibling = newWorkInProgress;
+    } // Delete the old fiber and place the new one.
+    // Since the old fiber is disconnected, we have to schedule it manually.
+
+
+    var last = returnFiber.lastEffect;
+
+    if (last !== null) {
+      last.nextEffect = current;
+      returnFiber.lastEffect = current;
+    } else {
+      returnFiber.firstEffect = returnFiber.lastEffect = current;
+    }
+
+    current.nextEffect = null;
+    current.effectTag = Deletion;
+    newWorkInProgress.effectTag |= Placement; // Restart work from the new fiber.
+
+    return newWorkInProgress;
+  }
+}
+
+function beginWork(current, workInProgress, renderExpirationTime) {
+  var updateExpirationTime = workInProgress.expirationTime;
+
+  {
+    if (workInProgress._debugNeedsRemount && current !== null) {
+      // This will restart the begin phase with a new fiber.
+      return remountFiber(current, workInProgress, createFiberFromTypeAndProps(workInProgress.type, workInProgress.key, workInProgress.pendingProps, workInProgress._debugOwner || null, workInProgress.mode, workInProgress.expirationTime));
+    }
+  }
+
+  if (current !== null) {
+    var oldProps = current.memoizedProps;
+    var newProps = workInProgress.pendingProps;
+
+    if (oldProps !== newProps || hasContextChanged() || ( // Force a re-render if the implementation changed due to hot reload:
+     workInProgress.type !== current.type )) {
+      // If props or context changed, mark the fiber as having performed work.
+      // This may be unset if the props are determined to be equal later (memo).
+      didReceiveUpdate = true;
+    } else if (updateExpirationTime < renderExpirationTime) {
+      didReceiveUpdate = false; // This fiber does not have any pending work. Bailout without entering
+      // the begin phase. There's still some bookkeeping we that needs to be done
+      // in this optimized path, mostly pushing stuff onto the stack.
+
+      switch (workInProgress.tag) {
+        case HostRoot:
+          pushHostRootContext(workInProgress);
+          resetHydrationState();
+          break;
+
+        case HostComponent:
+          pushHostContext(workInProgress);
+
+          if (workInProgress.mode & ConcurrentMode && renderExpirationTime !== Never && shouldDeprioritizeSubtree(workInProgress.type, newProps)) {
+            {
+              markSpawnedWork(Never);
+            } // Schedule this fiber to re-render at offscreen priority. Then bailout.
+
+
+            workInProgress.expirationTime = workInProgress.childExpirationTime = Never;
+            return null;
+          }
+
+          break;
+
+        case ClassComponent:
+          {
+            var Component = workInProgress.type;
+
+            if (isContextProvider(Component)) {
+              pushContextProvider(workInProgress);
+            }
+
+            break;
+          }
+
+        case HostPortal:
+          pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo);
+          break;
+
+        case ContextProvider:
+          {
+            var newValue = workInProgress.memoizedProps.value;
+            pushProvider(workInProgress, newValue);
+            break;
+          }
+
+        case Profiler:
+          {
+            // Profiler should only call onRender when one of its descendants actually rendered.
+            var hasChildWork = workInProgress.childExpirationTime >= renderExpirationTime;
+
+            if (hasChildWork) {
+              workInProgress.effectTag |= Update;
+            }
+          }
+
+          break;
+
+        case SuspenseComponent:
+          {
+            var state = workInProgress.memoizedState;
+
+            if (state !== null) {
+              // whether to retry the primary children, or to skip over it and
+              // go straight to the fallback. Check the priority of the primary
+              // child fragment.
+
+
+              var primaryChildFragment = workInProgress.child;
+              var primaryChildExpirationTime = primaryChildFragment.childExpirationTime;
+
+              if (primaryChildExpirationTime !== NoWork && primaryChildExpirationTime >= renderExpirationTime) {
+                // The primary children have pending work. Use the normal path
+                // to attempt to render the primary children again.
+                return updateSuspenseComponent(current, workInProgress, renderExpirationTime);
+              } else {
+                pushSuspenseContext(workInProgress, setDefaultShallowSuspenseContext(suspenseStackCursor.current)); // The primary children do not have pending work with sufficient
+                // priority. Bailout.
+
+                var child = bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+
+                if (child !== null) {
+                  // The fallback children have pending work. Skip over the
+                  // primary children and work on the fallback.
+                  return child.sibling;
+                } else {
+                  return null;
+                }
+              }
+            } else {
+              pushSuspenseContext(workInProgress, setDefaultShallowSuspenseContext(suspenseStackCursor.current));
+            }
+
+            break;
+          }
+
+        case SuspenseListComponent:
+          {
+            var didSuspendBefore = (current.effectTag & DidCapture) !== NoEffect;
+
+            var _hasChildWork = workInProgress.childExpirationTime >= renderExpirationTime;
+
+            if (didSuspendBefore) {
+              if (_hasChildWork) {
+                // If something was in fallback state last time, and we have all the
+                // same children then we're still in progressive loading state.
+                // Something might get unblocked by state updates or retries in the
+                // tree which will affect the tail. So we need to use the normal
+                // path to compute the correct tail.
+                return updateSuspenseListComponent(current, workInProgress, renderExpirationTime);
+              } // If none of the children had any work, that means that none of
+              // them got retried so they'll still be blocked in the same way
+              // as before. We can fast bail out.
+
+
+              workInProgress.effectTag |= DidCapture;
+            } // If nothing suspended before and we're rendering the same children,
+            // then the tail doesn't matter. Anything new that suspends will work
+            // in the "together" mode, so we can continue from the state we had.
+
+
+            var renderState = workInProgress.memoizedState;
+
+            if (renderState !== null) {
+              // Reset to the "together" mode in case we've started a different
+              // update in the past but didn't complete it.
+              renderState.rendering = null;
+              renderState.tail = null;
+            }
+
+            pushSuspenseContext(workInProgress, suspenseStackCursor.current);
+
+            if (_hasChildWork) {
+              break;
+            } else {
+              // If none of the children had any work, that means that none of
+              // them got retried so they'll still be blocked in the same way
+              // as before. We can fast bail out.
+              return null;
+            }
+          }
+      }
+
+      return bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+    } else {
+      // An update was scheduled on this fiber, but there are no new props
+      // nor legacy context. Set this to false. If an update queue or context
+      // consumer produces a changed value, it will set this to true. Otherwise,
+      // the component will assume the children have not changed and bail out.
+      didReceiveUpdate = false;
+    }
+  } else {
+    didReceiveUpdate = false;
+  } // Before entering the begin phase, clear pending update priority.
+  // TODO: This assumes that we're about to evaluate the component and process
+  // the update queue. However, there's an exception: SimpleMemoComponent
+  // sometimes bails out later in the begin phase. This indicates that we should
+  // move this assignment out of the common path and into each branch.
+
+
+  workInProgress.expirationTime = NoWork;
+
+  switch (workInProgress.tag) {
+    case IndeterminateComponent:
+      {
+        return mountIndeterminateComponent(current, workInProgress, workInProgress.type, renderExpirationTime);
+      }
+
+    case LazyComponent:
+      {
+        var elementType = workInProgress.elementType;
+        return mountLazyComponent(current, workInProgress, elementType, updateExpirationTime, renderExpirationTime);
+      }
+
+    case FunctionComponent:
+      {
+        var _Component = workInProgress.type;
+        var unresolvedProps = workInProgress.pendingProps;
+        var resolvedProps = workInProgress.elementType === _Component ? unresolvedProps : resolveDefaultProps(_Component, unresolvedProps);
+        return updateFunctionComponent(current, workInProgress, _Component, resolvedProps, renderExpirationTime);
+      }
+
+    case ClassComponent:
+      {
+        var _Component2 = workInProgress.type;
+        var _unresolvedProps = workInProgress.pendingProps;
+
+        var _resolvedProps = workInProgress.elementType === _Component2 ? _unresolvedProps : resolveDefaultProps(_Component2, _unresolvedProps);
+
+        return updateClassComponent(current, workInProgress, _Component2, _resolvedProps, renderExpirationTime);
+      }
+
+    case HostRoot:
+      return updateHostRoot(current, workInProgress, renderExpirationTime);
+
+    case HostComponent:
+      return updateHostComponent(current, workInProgress, renderExpirationTime);
+
+    case HostText:
+      return updateHostText(current, workInProgress);
+
+    case SuspenseComponent:
+      return updateSuspenseComponent(current, workInProgress, renderExpirationTime);
+
+    case HostPortal:
+      return updatePortalComponent(current, workInProgress, renderExpirationTime);
+
+    case ForwardRef:
+      {
+        var type = workInProgress.type;
+        var _unresolvedProps2 = workInProgress.pendingProps;
+
+        var _resolvedProps2 = workInProgress.elementType === type ? _unresolvedProps2 : resolveDefaultProps(type, _unresolvedProps2);
+
+        return updateForwardRef(current, workInProgress, type, _resolvedProps2, renderExpirationTime);
+      }
+
+    case Fragment:
+      return updateFragment(current, workInProgress, renderExpirationTime);
+
+    case Mode:
+      return updateMode(current, workInProgress, renderExpirationTime);
+
+    case Profiler:
+      return updateProfiler(current, workInProgress, renderExpirationTime);
+
+    case ContextProvider:
+      return updateContextProvider(current, workInProgress, renderExpirationTime);
+
+    case ContextConsumer:
+      return updateContextConsumer(current, workInProgress, renderExpirationTime);
+
+    case MemoComponent:
+      {
+        var _type2 = workInProgress.type;
+        var _unresolvedProps3 = workInProgress.pendingProps; // Resolve outer props first, then resolve inner props.
+
+        var _resolvedProps3 = resolveDefaultProps(_type2, _unresolvedProps3);
+
+        {
+          if (workInProgress.type !== workInProgress.elementType) {
+            var outerPropTypes = _type2.propTypes;
+
+            if (outerPropTypes) {
+              checkPropTypes(outerPropTypes, _resolvedProps3, // Resolved for outer only
+              'prop', getComponentName(_type2), getCurrentFiberStackInDev);
+            }
+          }
+        }
+
+        _resolvedProps3 = resolveDefaultProps(_type2.type, _resolvedProps3);
+        return updateMemoComponent(current, workInProgress, _type2, _resolvedProps3, updateExpirationTime, renderExpirationTime);
+      }
+
+    case SimpleMemoComponent:
+      {
+        return updateSimpleMemoComponent(current, workInProgress, workInProgress.type, workInProgress.pendingProps, updateExpirationTime, renderExpirationTime);
+      }
+
+    case IncompleteClassComponent:
+      {
+        var _Component3 = workInProgress.type;
+        var _unresolvedProps4 = workInProgress.pendingProps;
+
+        var _resolvedProps4 = workInProgress.elementType === _Component3 ? _unresolvedProps4 : resolveDefaultProps(_Component3, _unresolvedProps4);
+
+        return mountIncompleteClassComponent(current, workInProgress, _Component3, _resolvedProps4, renderExpirationTime);
+      }
+
+    case SuspenseListComponent:
+      {
+        return updateSuspenseListComponent(current, workInProgress, renderExpirationTime);
+      }
+  }
+
+  {
+    {
+      throw Error( "Unknown unit of work tag (" + workInProgress.tag + "). This error is likely caused by a bug in React. Please file an issue." );
+    }
+  }
+}
+
+function markUpdate(workInProgress) {
+  // Tag the fiber with an update effect. This turns a Placement into
+  // a PlacementAndUpdate.
+  workInProgress.effectTag |= Update;
+}
+
+function markRef$1(workInProgress) {
+  workInProgress.effectTag |= Ref;
+}
+
+var appendAllChildren;
+var updateHostContainer;
+var updateHostComponent$1;
+var updateHostText$1;
+
+{
+  // Mutation mode
+  appendAllChildren = function (parent, workInProgress, needsVisibilityToggle, isHidden) {
+    // We only have the top Fiber that was created but we need recurse down its
+    // children to find all the terminal nodes.
+    var node = workInProgress.child;
+
+    while (node !== null) {
+      if (node.tag === HostComponent || node.tag === HostText) {
+        appendInitialChild(parent, node.stateNode);
+      } else if (node.tag === HostPortal) ; else if (node.child !== null) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+
+      if (node === workInProgress) {
+        return;
+      }
+
+      while (node.sibling === null) {
+        if (node.return === null || node.return === workInProgress) {
+          return;
+        }
+
+        node = node.return;
+      }
+
+      node.sibling.return = node.return;
+      node = node.sibling;
+    }
+  };
+
+  updateHostContainer = function (workInProgress) {// Noop
+  };
+
+  updateHostComponent$1 = function (current, workInProgress, type, newProps, rootContainerInstance) {
+    // If we have an alternate, that means this is an update and we need to
+    // schedule a side-effect to do the updates.
+    var oldProps = current.memoizedProps;
+
+    if (oldProps === newProps) {
+      // In mutation mode, this is sufficient for a bailout because
+      // we won't touch this node even if children changed.
+      return;
+    } // If we get updated because one of our children updated, we don't
+    // have newProps so we'll have to reuse them.
+    // TODO: Split the update API as separate for the props vs. children.
+    // Even better would be if children weren't special cased at all tho.
+
+
+    var instance = workInProgress.stateNode;
+    var currentHostContext = getHostContext(); // TODO: Experiencing an error where oldProps is null. Suggests a host
+    // component is hitting the resume path. Figure out why. Possibly
+    // related to `hidden`.
+
+    var updatePayload = prepareUpdate(instance, type, oldProps, newProps, rootContainerInstance, currentHostContext); // TODO: Type this specific to this type of component.
+
+    workInProgress.updateQueue = updatePayload; // If the update payload indicates that there is a change or if there
+    // is a new ref we mark this as an update. All the work is done in commitWork.
+
+    if (updatePayload) {
+      markUpdate(workInProgress);
+    }
+  };
+
+  updateHostText$1 = function (current, workInProgress, oldText, newText) {
+    // If the text differs, mark it as an update. All the work in done in commitWork.
+    if (oldText !== newText) {
+      markUpdate(workInProgress);
+    }
+  };
+}
+
+function cutOffTailIfNeeded(renderState, hasRenderedATailFallback) {
+  switch (renderState.tailMode) {
+    case 'hidden':
+      {
+        // Any insertions at the end of the tail list after this point
+        // should be invisible. If there are already mounted boundaries
+        // anything before them are not considered for collapsing.
+        // Therefore we need to go through the whole tail to find if
+        // there are any.
+        var tailNode = renderState.tail;
+        var lastTailNode = null;
+
+        while (tailNode !== null) {
+          if (tailNode.alternate !== null) {
+            lastTailNode = tailNode;
+          }
+
+          tailNode = tailNode.sibling;
+        } // Next we're simply going to delete all insertions after the
+        // last rendered item.
+
+
+        if (lastTailNode === null) {
+          // All remaining items in the tail are insertions.
+          renderState.tail = null;
+        } else {
+          // Detach the insertion after the last node that was already
+          // inserted.
+          lastTailNode.sibling = null;
+        }
+
+        break;
+      }
+
+    case 'collapsed':
+      {
+        // Any insertions at the end of the tail list after this point
+        // should be invisible. If there are already mounted boundaries
+        // anything before them are not considered for collapsing.
+        // Therefore we need to go through the whole tail to find if
+        // there are any.
+        var _tailNode = renderState.tail;
+        var _lastTailNode = null;
+
+        while (_tailNode !== null) {
+          if (_tailNode.alternate !== null) {
+            _lastTailNode = _tailNode;
+          }
+
+          _tailNode = _tailNode.sibling;
+        } // Next we're simply going to delete all insertions after the
+        // last rendered item.
+
+
+        if (_lastTailNode === null) {
+          // All remaining items in the tail are insertions.
+          if (!hasRenderedATailFallback && renderState.tail !== null) {
+            // We suspended during the head. We want to show at least one
+            // row at the tail. So we'll keep on and cut off the rest.
+            renderState.tail.sibling = null;
+          } else {
+            renderState.tail = null;
+          }
+        } else {
+          // Detach the insertion after the last node that was already
+          // inserted.
+          _lastTailNode.sibling = null;
+        }
+
+        break;
+      }
+  }
+}
+
+function completeWork(current, workInProgress, renderExpirationTime) {
+  var newProps = workInProgress.pendingProps;
+
+  switch (workInProgress.tag) {
+    case IndeterminateComponent:
+    case LazyComponent:
+    case SimpleMemoComponent:
+    case FunctionComponent:
+    case ForwardRef:
+    case Fragment:
+    case Mode:
+    case Profiler:
+    case ContextConsumer:
+    case MemoComponent:
+      return null;
+
+    case ClassComponent:
+      {
+        var Component = workInProgress.type;
+
+        if (isContextProvider(Component)) {
+          popContext(workInProgress);
+        }
+
+        return null;
+      }
+
+    case HostRoot:
+      {
+        popHostContainer(workInProgress);
+        popTopLevelContextObject(workInProgress);
+        var fiberRoot = workInProgress.stateNode;
+
+        if (fiberRoot.pendingContext) {
+          fiberRoot.context = fiberRoot.pendingContext;
+          fiberRoot.pendingContext = null;
+        }
+
+        if (current === null || current.child === null) {
+          // If we hydrated, pop so that we can delete any remaining children
+          // that weren't hydrated.
+          var wasHydrated = popHydrationState(workInProgress);
+
+          if (wasHydrated) {
+            // If we hydrated, then we'll need to schedule an update for
+            // the commit side-effects on the root.
+            markUpdate(workInProgress);
+          }
+        }
+
+        updateHostContainer(workInProgress);
+        return null;
+      }
+
+    case HostComponent:
+      {
+        popHostContext(workInProgress);
+        var rootContainerInstance = getRootHostContainer();
+        var type = workInProgress.type;
+
+        if (current !== null && workInProgress.stateNode != null) {
+          updateHostComponent$1(current, workInProgress, type, newProps, rootContainerInstance);
+
+          if (current.ref !== workInProgress.ref) {
+            markRef$1(workInProgress);
+          }
+        } else {
+          if (!newProps) {
+            if (!(workInProgress.stateNode !== null)) {
+              {
+                throw Error( "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue." );
+              }
+            } // This can happen when we abort work.
+
+
+            return null;
+          }
+
+          var currentHostContext = getHostContext(); // TODO: Move createInstance to beginWork and keep it on a context
+          // "stack" as the parent. Then append children as we go in beginWork
+          // or completeWork depending on whether we want to add them top->down or
+          // bottom->up. Top->down is faster in IE11.
+
+          var _wasHydrated = popHydrationState(workInProgress);
+
+          if (_wasHydrated) {
+            // TODO: Move this and createInstance step into the beginPhase
+            // to consolidate.
+            if (prepareToHydrateHostInstance(workInProgress, rootContainerInstance, currentHostContext)) {
+              // If changes to the hydrated node need to be applied at the
+              // commit-phase we mark this as such.
+              markUpdate(workInProgress);
+            }
+          } else {
+            var instance = createInstance(type, newProps, rootContainerInstance, currentHostContext, workInProgress);
+            appendAllChildren(instance, workInProgress, false, false); // This needs to be set before we mount Flare event listeners
+
+            workInProgress.stateNode = instance;
+            // (eg DOM renderer supports auto-focus for certain elements).
+            // Make sure such renderers get scheduled for later work.
+
+
+            if (finalizeInitialChildren(instance, type, newProps, rootContainerInstance)) {
+              markUpdate(workInProgress);
+            }
+          }
+
+          if (workInProgress.ref !== null) {
+            // If there is a ref on a host node we need to schedule a callback
+            markRef$1(workInProgress);
+          }
+        }
+
+        return null;
+      }
+
+    case HostText:
+      {
+        var newText = newProps;
+
+        if (current && workInProgress.stateNode != null) {
+          var oldText = current.memoizedProps; // If we have an alternate, that means this is an update and we need
+          // to schedule a side-effect to do the updates.
+
+          updateHostText$1(current, workInProgress, oldText, newText);
+        } else {
+          if (typeof newText !== 'string') {
+            if (!(workInProgress.stateNode !== null)) {
+              {
+                throw Error( "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue." );
+              }
+            } // This can happen when we abort work.
+
+          }
+
+          var _rootContainerInstance = getRootHostContainer();
+
+          var _currentHostContext = getHostContext();
+
+          var _wasHydrated2 = popHydrationState(workInProgress);
+
+          if (_wasHydrated2) {
+            if (prepareToHydrateHostTextInstance(workInProgress)) {
+              markUpdate(workInProgress);
+            }
+          } else {
+            workInProgress.stateNode = createTextInstance(newText, _rootContainerInstance, _currentHostContext, workInProgress);
+          }
+        }
+
+        return null;
+      }
+
+    case SuspenseComponent:
+      {
+        popSuspenseContext(workInProgress);
+        var nextState = workInProgress.memoizedState;
+
+        if ((workInProgress.effectTag & DidCapture) !== NoEffect) {
+          // Something suspended. Re-render with the fallback children.
+          workInProgress.expirationTime = renderExpirationTime; // Do not reset the effect list.
+
+          return workInProgress;
+        }
+
+        var nextDidTimeout = nextState !== null;
+        var prevDidTimeout = false;
+
+        if (current === null) {
+          if (workInProgress.memoizedProps.fallback !== undefined) {
+            popHydrationState(workInProgress);
+          }
+        } else {
+          var prevState = current.memoizedState;
+          prevDidTimeout = prevState !== null;
+
+          if (!nextDidTimeout && prevState !== null) {
+            // We just switched from the fallback to the normal children.
+            // Delete the fallback.
+            // TODO: Would it be better to store the fallback fragment on
+            // the stateNode during the begin phase?
+            var currentFallbackChild = current.child.sibling;
+
+            if (currentFallbackChild !== null) {
+              // Deletions go at the beginning of the return fiber's effect list
+              var first = workInProgress.firstEffect;
+
+              if (first !== null) {
+                workInProgress.firstEffect = currentFallbackChild;
+                currentFallbackChild.nextEffect = first;
+              } else {
+                workInProgress.firstEffect = workInProgress.lastEffect = currentFallbackChild;
+                currentFallbackChild.nextEffect = null;
+              }
+
+              currentFallbackChild.effectTag = Deletion;
+            }
+          }
+        }
+
+        if (nextDidTimeout && !prevDidTimeout) {
+          // If this subtreee is running in blocking mode we can suspend,
+          // otherwise we won't suspend.
+          // TODO: This will still suspend a synchronous tree if anything
+          // in the concurrent tree already suspended during this render.
+          // This is a known bug.
+          if ((workInProgress.mode & BlockingMode) !== NoMode) {
+            // TODO: Move this back to throwException because this is too late
+            // if this is a large tree which is common for initial loads. We
+            // don't know if we should restart a render or not until we get
+            // this marker, and this is too late.
+            // If this render already had a ping or lower pri updates,
+            // and this is the first time we know we're going to suspend we
+            // should be able to immediately restart from within throwException.
+            var hasInvisibleChildContext = current === null && workInProgress.memoizedProps.unstable_avoidThisFallback !== true;
+
+            if (hasInvisibleChildContext || hasSuspenseContext(suspenseStackCursor.current, InvisibleParentSuspenseContext)) {
+              // If this was in an invisible tree or a new render, then showing
+              // this boundary is ok.
+              renderDidSuspend();
+            } else {
+              // Otherwise, we're going to have to hide content so we should
+              // suspend for longer if possible.
+              renderDidSuspendDelayIfPossible();
+            }
+          }
+        }
+
+        {
+          // TODO: Only schedule updates if these values are non equal, i.e. it changed.
+          if (nextDidTimeout || prevDidTimeout) {
+            // If this boundary just timed out, schedule an effect to attach a
+            // retry listener to the promise. This flag is also used to hide the
+            // primary children. In mutation mode, we also need the flag to
+            // *unhide* children that were previously hidden, so check if this
+            // is currently timed out, too.
+            workInProgress.effectTag |= Update;
+          }
+        }
+
+        return null;
+      }
+
+    case HostPortal:
+      popHostContainer(workInProgress);
+      updateHostContainer(workInProgress);
+      return null;
+
+    case ContextProvider:
+      // Pop provider fiber
+      popProvider(workInProgress);
+      return null;
+
+    case IncompleteClassComponent:
+      {
+        // Same as class component case. I put it down here so that the tags are
+        // sequential to ensure this switch is compiled to a jump table.
+        var _Component = workInProgress.type;
+
+        if (isContextProvider(_Component)) {
+          popContext(workInProgress);
+        }
+
+        return null;
+      }
+
+    case SuspenseListComponent:
+      {
+        popSuspenseContext(workInProgress);
+        var renderState = workInProgress.memoizedState;
+
+        if (renderState === null) {
+          // We're running in the default, "independent" mode.
+          // We don't do anything in this mode.
+          return null;
+        }
+
+        var didSuspendAlready = (workInProgress.effectTag & DidCapture) !== NoEffect;
+        var renderedTail = renderState.rendering;
+
+        if (renderedTail === null) {
+          // We just rendered the head.
+          if (!didSuspendAlready) {
+            // This is the first pass. We need to figure out if anything is still
+            // suspended in the rendered set.
+            // If new content unsuspended, but there's still some content that
+            // didn't. Then we need to do a second pass that forces everything
+            // to keep showing their fallbacks.
+            // We might be suspended if something in this render pass suspended, or
+            // something in the previous committed pass suspended. Otherwise,
+            // there's no chance so we can skip the expensive call to
+            // findFirstSuspended.
+            var cannotBeSuspended = renderHasNotSuspendedYet() && (current === null || (current.effectTag & DidCapture) === NoEffect);
+
+            if (!cannotBeSuspended) {
+              var row = workInProgress.child;
+
+              while (row !== null) {
+                var suspended = findFirstSuspended(row);
+
+                if (suspended !== null) {
+                  didSuspendAlready = true;
+                  workInProgress.effectTag |= DidCapture;
+                  cutOffTailIfNeeded(renderState, false); // If this is a newly suspended tree, it might not get committed as
+                  // part of the second pass. In that case nothing will subscribe to
+                  // its thennables. Instead, we'll transfer its thennables to the
+                  // SuspenseList so that it can retry if they resolve.
+                  // There might be multiple of these in the list but since we're
+                  // going to wait for all of them anyway, it doesn't really matter
+                  // which ones gets to ping. In theory we could get clever and keep
+                  // track of how many dependencies remain but it gets tricky because
+                  // in the meantime, we can add/remove/change items and dependencies.
+                  // We might bail out of the loop before finding any but that
+                  // doesn't matter since that means that the other boundaries that
+                  // we did find already has their listeners attached.
+
+                  var newThennables = suspended.updateQueue;
+
+                  if (newThennables !== null) {
+                    workInProgress.updateQueue = newThennables;
+                    workInProgress.effectTag |= Update;
+                  } // Rerender the whole list, but this time, we'll force fallbacks
+                  // to stay in place.
+                  // Reset the effect list before doing the second pass since that's now invalid.
+
+
+                  if (renderState.lastEffect === null) {
+                    workInProgress.firstEffect = null;
+                  }
+
+                  workInProgress.lastEffect = renderState.lastEffect; // Reset the child fibers to their original state.
+
+                  resetChildFibers(workInProgress, renderExpirationTime); // Set up the Suspense Context to force suspense and immediately
+                  // rerender the children.
+
+                  pushSuspenseContext(workInProgress, setShallowSuspenseContext(suspenseStackCursor.current, ForceSuspenseFallback));
+                  return workInProgress.child;
+                }
+
+                row = row.sibling;
+              }
+            }
+          } else {
+            cutOffTailIfNeeded(renderState, false);
+          } // Next we're going to render the tail.
+
+        } else {
+          // Append the rendered row to the child list.
+          if (!didSuspendAlready) {
+            var _suspended = findFirstSuspended(renderedTail);
+
+            if (_suspended !== null) {
+              workInProgress.effectTag |= DidCapture;
+              didSuspendAlready = true; // Ensure we transfer the update queue to the parent so that it doesn't
+              // get lost if this row ends up dropped during a second pass.
+
+              var _newThennables = _suspended.updateQueue;
+
+              if (_newThennables !== null) {
+                workInProgress.updateQueue = _newThennables;
+                workInProgress.effectTag |= Update;
+              }
+
+              cutOffTailIfNeeded(renderState, true); // This might have been modified.
+
+              if (renderState.tail === null && renderState.tailMode === 'hidden' && !renderedTail.alternate) {
+                // We need to delete the row we just rendered.
+                // Reset the effect list to what it was before we rendered this
+                // child. The nested children have already appended themselves.
+                var lastEffect = workInProgress.lastEffect = renderState.lastEffect; // Remove any effects that were appended after this point.
+
+                if (lastEffect !== null) {
+                  lastEffect.nextEffect = null;
+                } // We're done.
+
+
+                return null;
+              }
+            } else if ( // The time it took to render last row is greater than time until
+            // the expiration.
+            now() * 2 - renderState.renderingStartTime > renderState.tailExpiration && renderExpirationTime > Never) {
+              // We have now passed our CPU deadline and we'll just give up further
+              // attempts to render the main content and only render fallbacks.
+              // The assumption is that this is usually faster.
+              workInProgress.effectTag |= DidCapture;
+              didSuspendAlready = true;
+              cutOffTailIfNeeded(renderState, false); // Since nothing actually suspended, there will nothing to ping this
+              // to get it started back up to attempt the next item. If we can show
+              // them, then they really have the same priority as this render.
+              // So we'll pick it back up the very next render pass once we've had
+              // an opportunity to yield for paint.
+
+              var nextPriority = renderExpirationTime - 1;
+              workInProgress.expirationTime = workInProgress.childExpirationTime = nextPriority;
+
+              {
+                markSpawnedWork(nextPriority);
+              }
+            }
+          }
+
+          if (renderState.isBackwards) {
+            // The effect list of the backwards tail will have been added
+            // to the end. This breaks the guarantee that life-cycles fire in
+            // sibling order but that isn't a strong guarantee promised by React.
+            // Especially since these might also just pop in during future commits.
+            // Append to the beginning of the list.
+            renderedTail.sibling = workInProgress.child;
+            workInProgress.child = renderedTail;
+          } else {
+            var previousSibling = renderState.last;
+
+            if (previousSibling !== null) {
+              previousSibling.sibling = renderedTail;
+            } else {
+              workInProgress.child = renderedTail;
+            }
+
+            renderState.last = renderedTail;
+          }
+        }
+
+        if (renderState.tail !== null) {
+          // We still have tail rows to render.
+          if (renderState.tailExpiration === 0) {
+            // Heuristic for how long we're willing to spend rendering rows
+            // until we just give up and show what we have so far.
+            var TAIL_EXPIRATION_TIMEOUT_MS = 500;
+            renderState.tailExpiration = now() + TAIL_EXPIRATION_TIMEOUT_MS; // TODO: This is meant to mimic the train model or JND but this
+            // is a per component value. It should really be since the start
+            // of the total render or last commit. Consider using something like
+            // globalMostRecentFallbackTime. That doesn't account for being
+            // suspended for part of the time or when it's a new render.
+            // It should probably use a global start time value instead.
+          } // Pop a row.
+
+
+          var next = renderState.tail;
+          renderState.rendering = next;
+          renderState.tail = next.sibling;
+          renderState.lastEffect = workInProgress.lastEffect;
+          renderState.renderingStartTime = now();
+          next.sibling = null; // Restore the context.
+          // TODO: We can probably just avoid popping it instead and only
+          // setting it the first time we go from not suspended to suspended.
+
+          var suspenseContext = suspenseStackCursor.current;
+
+          if (didSuspendAlready) {
+            suspenseContext = setShallowSuspenseContext(suspenseContext, ForceSuspenseFallback);
+          } else {
+            suspenseContext = setDefaultShallowSuspenseContext(suspenseContext);
+          }
+
+          pushSuspenseContext(workInProgress, suspenseContext); // Do a pass over the next row.
+
+          return next;
+        }
+
+        return null;
+      }
+  }
+
+  {
+    {
+      throw Error( "Unknown unit of work tag (" + workInProgress.tag + "). This error is likely caused by a bug in React. Please file an issue." );
+    }
+  }
+}
+
+function unwindWork(workInProgress, renderExpirationTime) {
+  switch (workInProgress.tag) {
+    case ClassComponent:
+      {
+        var Component = workInProgress.type;
+
+        if (isContextProvider(Component)) {
+          popContext(workInProgress);
+        }
+
+        var effectTag = workInProgress.effectTag;
+
+        if (effectTag & ShouldCapture) {
+          workInProgress.effectTag = effectTag & ~ShouldCapture | DidCapture;
+          return workInProgress;
+        }
+
+        return null;
+      }
+
+    case HostRoot:
+      {
+        popHostContainer(workInProgress);
+        popTopLevelContextObject(workInProgress);
+        var _effectTag = workInProgress.effectTag;
+
+        if (!((_effectTag & DidCapture) === NoEffect)) {
+          {
+            throw Error( "The root failed to unmount after an error. This is likely a bug in React. Please file an issue." );
+          }
+        }
+
+        workInProgress.effectTag = _effectTag & ~ShouldCapture | DidCapture;
+        return workInProgress;
+      }
+
+    case HostComponent:
+      {
+        // TODO: popHydrationState
+        popHostContext(workInProgress);
+        return null;
+      }
+
+    case SuspenseComponent:
+      {
+        popSuspenseContext(workInProgress);
+
+        var _effectTag2 = workInProgress.effectTag;
+
+        if (_effectTag2 & ShouldCapture) {
+          workInProgress.effectTag = _effectTag2 & ~ShouldCapture | DidCapture; // Captured a suspense effect. Re-render the boundary.
+
+          return workInProgress;
+        }
+
+        return null;
+      }
+
+    case SuspenseListComponent:
+      {
+        popSuspenseContext(workInProgress); // SuspenseList doesn't actually catch anything. It should've been
+        // caught by a nested boundary. If not, it should bubble through.
+
+        return null;
+      }
+
+    case HostPortal:
+      popHostContainer(workInProgress);
+      return null;
+
+    case ContextProvider:
+      popProvider(workInProgress);
+      return null;
+
+    default:
+      return null;
+  }
+}
+
+function unwindInterruptedWork(interruptedWork) {
+  switch (interruptedWork.tag) {
+    case ClassComponent:
+      {
+        var childContextTypes = interruptedWork.type.childContextTypes;
+
+        if (childContextTypes !== null && childContextTypes !== undefined) {
+          popContext(interruptedWork);
+        }
+
+        break;
+      }
+
+    case HostRoot:
+      {
+        popHostContainer(interruptedWork);
+        popTopLevelContextObject(interruptedWork);
+        break;
+      }
+
+    case HostComponent:
+      {
+        popHostContext(interruptedWork);
+        break;
+      }
+
+    case HostPortal:
+      popHostContainer(interruptedWork);
+      break;
+
+    case SuspenseComponent:
+      popSuspenseContext(interruptedWork);
+      break;
+
+    case SuspenseListComponent:
+      popSuspenseContext(interruptedWork);
+      break;
+
+    case ContextProvider:
+      popProvider(interruptedWork);
+      break;
+  }
+}
+
+function createCapturedValue(value, source) {
+  // If the value is an error, call this function immediately after it is thrown
+  // so the stack is accurate.
+  return {
+    value: value,
+    source: source,
+    stack: getStackByFiberInDevAndProd(source)
+  };
+}
+
+function logCapturedError(capturedError) {
+
+  var error = capturedError.error;
+
+  {
+    var componentName = capturedError.componentName,
+        componentStack = capturedError.componentStack,
+        errorBoundaryName = capturedError.errorBoundaryName,
+        errorBoundaryFound = capturedError.errorBoundaryFound,
+        willRetry = capturedError.willRetry; // Browsers support silencing uncaught errors by calling
+    // `preventDefault()` in window `error` handler.
+    // We record this information as an expando on the error.
+
+    if (error != null && error._suppressLogging) {
+      if (errorBoundaryFound && willRetry) {
+        // The error is recoverable and was silenced.
+        // Ignore it and don't print the stack addendum.
+        // This is handy for testing error boundaries without noise.
+        return;
+      } // The error is fatal. Since the silencing might have
+      // been accidental, we'll surface it anyway.
+      // However, the browser would have silenced the original error
+      // so we'll print it first, and then print the stack addendum.
+
+
+      console['error'](error); // Don't transform to our wrapper
+      // For a more detailed description of this block, see:
+      // https://github.com/facebook/react/pull/13384
+    }
+
+    var componentNameMessage = componentName ? "The above error occurred in the <" + componentName + "> component:" : 'The above error occurred in one of your React components:';
+    var errorBoundaryMessage; // errorBoundaryFound check is sufficient; errorBoundaryName check is to satisfy Flow.
+
+    if (errorBoundaryFound && errorBoundaryName) {
+      if (willRetry) {
+        errorBoundaryMessage = "React will try to recreate this component tree from scratch " + ("using the error boundary you provided, " + errorBoundaryName + ".");
+      } else {
+        errorBoundaryMessage = "This error was initially handled by the error boundary " + errorBoundaryName + ".\n" + "Recreating the tree from scratch failed so React will unmount the tree.";
+      }
+    } else {
+      errorBoundaryMessage = 'Consider adding an error boundary to your tree to customize error handling behavior.\n' + 'Visit https://fb.me/react-error-boundaries to learn more about error boundaries.';
+    }
+
+    var combinedMessage = "" + componentNameMessage + componentStack + "\n\n" + ("" + errorBoundaryMessage); // In development, we provide our own message with just the component stack.
+    // We don't include the original error message and JS stack because the browser
+    // has already printed it. Even if the application swallows the error, it is still
+    // displayed by the browser thanks to the DEV-only fake event trick in ReactErrorUtils.
+
+    console['error'](combinedMessage); // Don't transform to our wrapper
+  }
+}
+
+var didWarnAboutUndefinedSnapshotBeforeUpdate = null;
+
+{
+  didWarnAboutUndefinedSnapshotBeforeUpdate = new Set();
+}
+
+var PossiblyWeakSet = typeof WeakSet === 'function' ? WeakSet : Set;
+function logError(boundary, errorInfo) {
+  var source = errorInfo.source;
+  var stack = errorInfo.stack;
+
+  if (stack === null && source !== null) {
+    stack = getStackByFiberInDevAndProd(source);
+  }
+
+  var capturedError = {
+    componentName: source !== null ? getComponentName(source.type) : null,
+    componentStack: stack !== null ? stack : '',
+    error: errorInfo.value,
+    errorBoundary: null,
+    errorBoundaryName: null,
+    errorBoundaryFound: false,
+    willRetry: false
+  };
+
+  if (boundary !== null && boundary.tag === ClassComponent) {
+    capturedError.errorBoundary = boundary.stateNode;
+    capturedError.errorBoundaryName = getComponentName(boundary.type);
+    capturedError.errorBoundaryFound = true;
+    capturedError.willRetry = true;
+  }
+
+  try {
+    logCapturedError(capturedError);
+  } catch (e) {
+    // This method must not throw, or React internal state will get messed up.
+    // If console.error is overridden, or logCapturedError() shows a dialog that throws,
+    // we want to report this error outside of the normal stack as a last resort.
+    // https://github.com/facebook/react/issues/13188
+    setTimeout(function () {
+      throw e;
+    });
+  }
+}
+
+var callComponentWillUnmountWithTimer = function (current, instance) {
+  startPhaseTimer(current, 'componentWillUnmount');
+  instance.props = current.memoizedProps;
+  instance.state = current.memoizedState;
+  instance.componentWillUnmount();
+  stopPhaseTimer();
+}; // Capture errors so they don't interrupt unmounting.
+
+
+function safelyCallComponentWillUnmount(current, instance) {
+  {
+    invokeGuardedCallback(null, callComponentWillUnmountWithTimer, null, current, instance);
+
+    if (hasCaughtError()) {
+      var unmountError = clearCaughtError();
+      captureCommitPhaseError(current, unmountError);
+    }
+  }
+}
+
+function safelyDetachRef(current) {
+  var ref = current.ref;
+
+  if (ref !== null) {
+    if (typeof ref === 'function') {
+      {
+        invokeGuardedCallback(null, ref, null, null);
+
+        if (hasCaughtError()) {
+          var refError = clearCaughtError();
+          captureCommitPhaseError(current, refError);
+        }
+      }
+    } else {
+      ref.current = null;
+    }
+  }
+}
+
+function safelyCallDestroy(current, destroy) {
+  {
+    invokeGuardedCallback(null, destroy, null);
+
+    if (hasCaughtError()) {
+      var error = clearCaughtError();
+      captureCommitPhaseError(current, error);
+    }
+  }
+}
+
+function commitBeforeMutationLifeCycles(current, finishedWork) {
+  switch (finishedWork.tag) {
+    case FunctionComponent:
+    case ForwardRef:
+    case SimpleMemoComponent:
+    case Block:
+      {
+        return;
+      }
+
+    case ClassComponent:
+      {
+        if (finishedWork.effectTag & Snapshot) {
+          if (current !== null) {
+            var prevProps = current.memoizedProps;
+            var prevState = current.memoizedState;
+            startPhaseTimer(finishedWork, 'getSnapshotBeforeUpdate');
+            var instance = finishedWork.stateNode; // We could update instance props and state here,
+            // but instead we rely on them being set during last render.
+            // TODO: revisit this when we implement resuming.
+
+            {
+              if (finishedWork.type === finishedWork.elementType && !didWarnAboutReassigningProps) {
+                if (instance.props !== finishedWork.memoizedProps) {
+                  error('Expected %s props to match memoized props before ' + 'getSnapshotBeforeUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance');
+                }
+
+                if (instance.state !== finishedWork.memoizedState) {
+                  error('Expected %s state to match memoized state before ' + 'getSnapshotBeforeUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance');
+                }
+              }
+            }
+
+            var snapshot = instance.getSnapshotBeforeUpdate(finishedWork.elementType === finishedWork.type ? prevProps : resolveDefaultProps(finishedWork.type, prevProps), prevState);
+
+            {
+              var didWarnSet = didWarnAboutUndefinedSnapshotBeforeUpdate;
+
+              if (snapshot === undefined && !didWarnSet.has(finishedWork.type)) {
+                didWarnSet.add(finishedWork.type);
+
+                error('%s.getSnapshotBeforeUpdate(): A snapshot value (or null) ' + 'must be returned. You have returned undefined.', getComponentName(finishedWork.type));
+              }
+            }
+
+            instance.__reactInternalSnapshotBeforeUpdate = snapshot;
+            stopPhaseTimer();
+          }
+        }
+
+        return;
+      }
+
+    case HostRoot:
+    case HostComponent:
+    case HostText:
+    case HostPortal:
+    case IncompleteClassComponent:
+      // Nothing to do for these component types
+      return;
+  }
+
+  {
+    {
+      throw Error( "This unit of work tag should not have side-effects. This error is likely caused by a bug in React. Please file an issue." );
+    }
+  }
+}
+
+function commitHookEffectListUnmount(tag, finishedWork) {
+  var updateQueue = finishedWork.updateQueue;
+  var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null;
+
+  if (lastEffect !== null) {
+    var firstEffect = lastEffect.next;
+    var effect = firstEffect;
+
+    do {
+      if ((effect.tag & tag) === tag) {
+        // Unmount
+        var destroy = effect.destroy;
+        effect.destroy = undefined;
+
+        if (destroy !== undefined) {
+          destroy();
+        }
+      }
+
+      effect = effect.next;
+    } while (effect !== firstEffect);
+  }
+}
+
+function commitHookEffectListMount(tag, finishedWork) {
+  var updateQueue = finishedWork.updateQueue;
+  var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null;
+
+  if (lastEffect !== null) {
+    var firstEffect = lastEffect.next;
+    var effect = firstEffect;
+
+    do {
+      if ((effect.tag & tag) === tag) {
+        // Mount
+        var create = effect.create;
+        effect.destroy = create();
+
+        {
+          var destroy = effect.destroy;
+
+          if (destroy !== undefined && typeof destroy !== 'function') {
+            var addendum = void 0;
+
+            if (destroy === null) {
+              addendum = ' You returned null. If your effect does not require clean ' + 'up, return undefined (or nothing).';
+            } else if (typeof destroy.then === 'function') {
+              addendum = '\n\nIt looks like you wrote useEffect(async () => ...) or returned a Promise. ' + 'Instead, write the async function inside your effect ' + 'and call it immediately:\n\n' + 'useEffect(() => {\n' + '  async function fetchData() {\n' + '    // You can await here\n' + '    const response = await MyAPI.getData(someId);\n' + '    // ...\n' + '  }\n' + '  fetchData();\n' + "}, [someId]); // Or [] if effect doesn't need props or state\n\n" + 'Learn more about data fetching with Hooks: https://fb.me/react-hooks-data-fetching';
+            } else {
+              addendum = ' You returned: ' + destroy;
+            }
+
+            error('An effect function must not return anything besides a function, ' + 'which is used for clean-up.%s%s', addendum, getStackByFiberInDevAndProd(finishedWork));
+          }
+        }
+      }
+
+      effect = effect.next;
+    } while (effect !== firstEffect);
+  }
+}
+
+function commitPassiveHookEffects(finishedWork) {
+  if ((finishedWork.effectTag & Passive) !== NoEffect) {
+    switch (finishedWork.tag) {
+      case FunctionComponent:
+      case ForwardRef:
+      case SimpleMemoComponent:
+      case Block:
+        {
+          // TODO (#17945) We should call all passive destroy functions (for all fibers)
+          // before calling any create functions. The current approach only serializes
+          // these for a single fiber.
+          commitHookEffectListUnmount(Passive$1 | HasEffect, finishedWork);
+          commitHookEffectListMount(Passive$1 | HasEffect, finishedWork);
+          break;
+        }
+    }
+  }
+}
+
+function commitLifeCycles(finishedRoot, current, finishedWork, committedExpirationTime) {
+  switch (finishedWork.tag) {
+    case FunctionComponent:
+    case ForwardRef:
+    case SimpleMemoComponent:
+    case Block:
+      {
+        // At this point layout effects have already been destroyed (during mutation phase).
+        // This is done to prevent sibling component effects from interfering with each other,
+        // e.g. a destroy function in one component should never override a ref set
+        // by a create function in another component during the same commit.
+        commitHookEffectListMount(Layout | HasEffect, finishedWork);
+
+        return;
+      }
+
+    case ClassComponent:
+      {
+        var instance = finishedWork.stateNode;
+
+        if (finishedWork.effectTag & Update) {
+          if (current === null) {
+            startPhaseTimer(finishedWork, 'componentDidMount'); // We could update instance props and state here,
+            // but instead we rely on them being set during last render.
+            // TODO: revisit this when we implement resuming.
+
+            {
+              if (finishedWork.type === finishedWork.elementType && !didWarnAboutReassigningProps) {
+                if (instance.props !== finishedWork.memoizedProps) {
+                  error('Expected %s props to match memoized props before ' + 'componentDidMount. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance');
+                }
+
+                if (instance.state !== finishedWork.memoizedState) {
+                  error('Expected %s state to match memoized state before ' + 'componentDidMount. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance');
+                }
+              }
+            }
+
+            instance.componentDidMount();
+            stopPhaseTimer();
+          } else {
+            var prevProps = finishedWork.elementType === finishedWork.type ? current.memoizedProps : resolveDefaultProps(finishedWork.type, current.memoizedProps);
+            var prevState = current.memoizedState;
+            startPhaseTimer(finishedWork, 'componentDidUpdate'); // We could update instance props and state here,
+            // but instead we rely on them being set during last render.
+            // TODO: revisit this when we implement resuming.
+
+            {
+              if (finishedWork.type === finishedWork.elementType && !didWarnAboutReassigningProps) {
+                if (instance.props !== finishedWork.memoizedProps) {
+                  error('Expected %s props to match memoized props before ' + 'componentDidUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance');
+                }
+
+                if (instance.state !== finishedWork.memoizedState) {
+                  error('Expected %s state to match memoized state before ' + 'componentDidUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance');
+                }
+              }
+            }
+
+            instance.componentDidUpdate(prevProps, prevState, instance.__reactInternalSnapshotBeforeUpdate);
+            stopPhaseTimer();
+          }
+        }
+
+        var updateQueue = finishedWork.updateQueue;
+
+        if (updateQueue !== null) {
+          {
+            if (finishedWork.type === finishedWork.elementType && !didWarnAboutReassigningProps) {
+              if (instance.props !== finishedWork.memoizedProps) {
+                error('Expected %s props to match memoized props before ' + 'processing the update queue. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance');
+              }
+
+              if (instance.state !== finishedWork.memoizedState) {
+                error('Expected %s state to match memoized state before ' + 'processing the update queue. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance');
+              }
+            }
+          } // We could update instance props and state here,
+          // but instead we rely on them being set during last render.
+          // TODO: revisit this when we implement resuming.
+
+
+          commitUpdateQueue(finishedWork, updateQueue, instance);
+        }
+
+        return;
+      }
+
+    case HostRoot:
+      {
+        var _updateQueue = finishedWork.updateQueue;
+
+        if (_updateQueue !== null) {
+          var _instance = null;
+
+          if (finishedWork.child !== null) {
+            switch (finishedWork.child.tag) {
+              case HostComponent:
+                _instance = getPublicInstance(finishedWork.child.stateNode);
+                break;
+
+              case ClassComponent:
+                _instance = finishedWork.child.stateNode;
+                break;
+            }
+          }
+
+          commitUpdateQueue(finishedWork, _updateQueue, _instance);
+        }
+
+        return;
+      }
+
+    case HostComponent:
+      {
+        var _instance2 = finishedWork.stateNode; // Renderers may schedule work to be done after host components are mounted
+        // (eg DOM renderer may schedule auto-focus for inputs and form controls).
+        // These effects should only be committed when components are first mounted,
+        // aka when there is no current/alternate.
+
+        if (current === null && finishedWork.effectTag & Update) {
+          var type = finishedWork.type;
+          var props = finishedWork.memoizedProps;
+          commitMount(_instance2, type, props);
+        }
+
+        return;
+      }
+
+    case HostText:
+      {
+        // We have no life-cycles associated with text.
+        return;
+      }
+
+    case HostPortal:
+      {
+        // We have no life-cycles associated with portals.
+        return;
+      }
+
+    case Profiler:
+      {
+        {
+          var onRender = finishedWork.memoizedProps.onRender;
+
+          if (typeof onRender === 'function') {
+            {
+              onRender(finishedWork.memoizedProps.id, current === null ? 'mount' : 'update', finishedWork.actualDuration, finishedWork.treeBaseDuration, finishedWork.actualStartTime, getCommitTime(), finishedRoot.memoizedInteractions);
+            }
+          }
+        }
+
+        return;
+      }
+
+    case SuspenseComponent:
+      {
+        commitSuspenseHydrationCallbacks(finishedRoot, finishedWork);
+        return;
+      }
+
+    case SuspenseListComponent:
+    case IncompleteClassComponent:
+    case FundamentalComponent:
+    case ScopeComponent:
+      return;
+  }
+
+  {
+    {
+      throw Error( "This unit of work tag should not have side-effects. This error is likely caused by a bug in React. Please file an issue." );
+    }
+  }
+}
+
+function hideOrUnhideAllChildren(finishedWork, isHidden) {
+  {
+    // We only have the top Fiber that was inserted but we need to recurse down its
+    // children to find all the terminal nodes.
+    var node = finishedWork;
+
+    while (true) {
+      if (node.tag === HostComponent) {
+        var instance = node.stateNode;
+
+        if (isHidden) {
+          hideInstance(instance);
+        } else {
+          unhideInstance(node.stateNode, node.memoizedProps);
+        }
+      } else if (node.tag === HostText) {
+        var _instance3 = node.stateNode;
+
+        if (isHidden) {
+          hideTextInstance(_instance3);
+        } else {
+          unhideTextInstance(_instance3, node.memoizedProps);
+        }
+      } else if (node.tag === SuspenseComponent && node.memoizedState !== null && node.memoizedState.dehydrated === null) {
+        // Found a nested Suspense component that timed out. Skip over the
+        // primary child fragment, which should remain hidden.
+        var fallbackChildFragment = node.child.sibling;
+        fallbackChildFragment.return = node;
+        node = fallbackChildFragment;
+        continue;
+      } else if (node.child !== null) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+
+      if (node === finishedWork) {
+        return;
+      }
+
+      while (node.sibling === null) {
+        if (node.return === null || node.return === finishedWork) {
+          return;
+        }
+
+        node = node.return;
+      }
+
+      node.sibling.return = node.return;
+      node = node.sibling;
+    }
+  }
+}
+
+function commitAttachRef(finishedWork) {
+  var ref = finishedWork.ref;
+
+  if (ref !== null) {
+    var instance = finishedWork.stateNode;
+    var instanceToUse;
+
+    switch (finishedWork.tag) {
+      case HostComponent:
+        instanceToUse = getPublicInstance(instance);
+        break;
+
+      default:
+        instanceToUse = instance;
+    } // Moved outside to ensure DCE works with this flag
+
+    if (typeof ref === 'function') {
+      ref(instanceToUse);
+    } else {
+      {
+        if (!ref.hasOwnProperty('current')) {
+          error('Unexpected ref object provided for %s. ' + 'Use either a ref-setter function or React.createRef().%s', getComponentName(finishedWork.type), getStackByFiberInDevAndProd(finishedWork));
+        }
+      }
+
+      ref.current = instanceToUse;
+    }
+  }
+}
+
+function commitDetachRef(current) {
+  var currentRef = current.ref;
+
+  if (currentRef !== null) {
+    if (typeof currentRef === 'function') {
+      currentRef(null);
+    } else {
+      currentRef.current = null;
+    }
+  }
+} // User-originating errors (lifecycles and refs) should not interrupt
+// deletion, so don't let them throw. Host-originating errors should
+// interrupt deletion, so it's okay
+
+
+function commitUnmount(finishedRoot, current, renderPriorityLevel) {
+  onCommitUnmount(current);
+
+  switch (current.tag) {
+    case FunctionComponent:
+    case ForwardRef:
+    case MemoComponent:
+    case SimpleMemoComponent:
+    case Block:
+      {
+        var updateQueue = current.updateQueue;
+
+        if (updateQueue !== null) {
+          var lastEffect = updateQueue.lastEffect;
+
+          if (lastEffect !== null) {
+            var firstEffect = lastEffect.next;
+
+            {
+              // When the owner fiber is deleted, the destroy function of a passive
+              // effect hook is called during the synchronous commit phase. This is
+              // a concession to implementation complexity. Calling it in the
+              // passive effect phase (like they usually are, when dependencies
+              // change during an update) would require either traversing the
+              // children of the deleted fiber again, or including unmount effects
+              // as part of the fiber effect list.
+              //
+              // Because this is during the sync commit phase, we need to change
+              // the priority.
+              //
+              // TODO: Reconsider this implementation trade off.
+              var priorityLevel = renderPriorityLevel > NormalPriority ? NormalPriority : renderPriorityLevel;
+              runWithPriority$1(priorityLevel, function () {
+                var effect = firstEffect;
+
+                do {
+                  var _destroy = effect.destroy;
+
+                  if (_destroy !== undefined) {
+                    safelyCallDestroy(current, _destroy);
+                  }
+
+                  effect = effect.next;
+                } while (effect !== firstEffect);
+              });
+            }
+          }
+        }
+
+        return;
+      }
+
+    case ClassComponent:
+      {
+        safelyDetachRef(current);
+        var instance = current.stateNode;
+
+        if (typeof instance.componentWillUnmount === 'function') {
+          safelyCallComponentWillUnmount(current, instance);
+        }
+
+        return;
+      }
+
+    case HostComponent:
+      {
+
+        safelyDetachRef(current);
+        return;
+      }
+
+    case HostPortal:
+      {
+        // TODO: this is recursive.
+        // We are also not using this parent because
+        // the portal will get pushed immediately.
+        {
+          unmountHostComponents(finishedRoot, current, renderPriorityLevel);
+        }
+
+        return;
+      }
+
+    case FundamentalComponent:
+      {
+
+        return;
+      }
+
+    case DehydratedFragment:
+      {
+
+        return;
+      }
+
+    case ScopeComponent:
+      {
+
+        return;
+      }
+  }
+}
+
+function commitNestedUnmounts(finishedRoot, root, renderPriorityLevel) {
+  // While we're inside a removed host node we don't want to call
+  // removeChild on the inner nodes because they're removed by the top
+  // call anyway. We also want to call componentWillUnmount on all
+  // composites before this host node is removed from the tree. Therefore
+  // we do an inner loop while we're still inside the host node.
+  var node = root;
+
+  while (true) {
+    commitUnmount(finishedRoot, node, renderPriorityLevel); // Visit children because they may contain more composite or host nodes.
+    // Skip portals because commitUnmount() currently visits them recursively.
+
+    if (node.child !== null && ( // If we use mutation we drill down into portals using commitUnmount above.
+    // If we don't use mutation we drill down into portals here instead.
+     node.tag !== HostPortal)) {
+      node.child.return = node;
+      node = node.child;
+      continue;
+    }
+
+    if (node === root) {
+      return;
+    }
+
+    while (node.sibling === null) {
+      if (node.return === null || node.return === root) {
+        return;
+      }
+
+      node = node.return;
+    }
+
+    node.sibling.return = node.return;
+    node = node.sibling;
+  }
+}
+
+function detachFiber(current) {
+  var alternate = current.alternate; // Cut off the return pointers to disconnect it from the tree. Ideally, we
+  // should clear the child pointer of the parent alternate to let this
+  // get GC:ed but we don't know which for sure which parent is the current
+  // one so we'll settle for GC:ing the subtree of this child. This child
+  // itself will be GC:ed when the parent updates the next time.
+
+  current.return = null;
+  current.child = null;
+  current.memoizedState = null;
+  current.updateQueue = null;
+  current.dependencies = null;
+  current.alternate = null;
+  current.firstEffect = null;
+  current.lastEffect = null;
+  current.pendingProps = null;
+  current.memoizedProps = null;
+  current.stateNode = null;
+
+  if (alternate !== null) {
+    detachFiber(alternate);
+  }
+}
+
+function getHostParentFiber(fiber) {
+  var parent = fiber.return;
+
+  while (parent !== null) {
+    if (isHostParent(parent)) {
+      return parent;
+    }
+
+    parent = parent.return;
+  }
+
+  {
+    {
+      throw Error( "Expected to find a host parent. This error is likely caused by a bug in React. Please file an issue." );
+    }
+  }
+}
+
+function isHostParent(fiber) {
+  return fiber.tag === HostComponent || fiber.tag === HostRoot || fiber.tag === HostPortal;
+}
+
+function getHostSibling(fiber) {
+  // We're going to search forward into the tree until we find a sibling host
+  // node. Unfortunately, if multiple insertions are done in a row we have to
+  // search past them. This leads to exponential search for the next sibling.
+  // TODO: Find a more efficient way to do this.
+  var node = fiber;
+
+  siblings: while (true) {
+    // If we didn't find anything, let's try the next sibling.
+    while (node.sibling === null) {
+      if (node.return === null || isHostParent(node.return)) {
+        // If we pop out of the root or hit the parent the fiber we are the
+        // last sibling.
+        return null;
+      }
+
+      node = node.return;
+    }
+
+    node.sibling.return = node.return;
+    node = node.sibling;
+
+    while (node.tag !== HostComponent && node.tag !== HostText && node.tag !== DehydratedFragment) {
+      // If it is not host node and, we might have a host node inside it.
+      // Try to search down until we find one.
+      if (node.effectTag & Placement) {
+        // If we don't have a child, try the siblings instead.
+        continue siblings;
+      } // If we don't have a child, try the siblings instead.
+      // We also skip portals because they are not part of this host tree.
+
+
+      if (node.child === null || node.tag === HostPortal) {
+        continue siblings;
+      } else {
+        node.child.return = node;
+        node = node.child;
+      }
+    } // Check if this host node is stable or about to be placed.
+
+
+    if (!(node.effectTag & Placement)) {
+      // Found it!
+      return node.stateNode;
+    }
+  }
+}
+
+function commitPlacement(finishedWork) {
+
+
+  var parentFiber = getHostParentFiber(finishedWork); // Note: these two variables *must* always be updated together.
+
+  var parent;
+  var isContainer;
+  var parentStateNode = parentFiber.stateNode;
+
+  switch (parentFiber.tag) {
+    case HostComponent:
+      parent = parentStateNode;
+      isContainer = false;
+      break;
+
+    case HostRoot:
+      parent = parentStateNode.containerInfo;
+      isContainer = true;
+      break;
+
+    case HostPortal:
+      parent = parentStateNode.containerInfo;
+      isContainer = true;
+      break;
+
+    case FundamentalComponent:
+
+    // eslint-disable-next-line-no-fallthrough
+
+    default:
+      {
+        {
+          throw Error( "Invalid host parent fiber. This error is likely caused by a bug in React. Please file an issue." );
+        }
+      }
+
+  }
+
+  if (parentFiber.effectTag & ContentReset) {
+    // Reset the text content of the parent before doing any insertions
+    resetTextContent(parent); // Clear ContentReset from the effect tag
+
+    parentFiber.effectTag &= ~ContentReset;
+  }
+
+  var before = getHostSibling(finishedWork); // We only have the top Fiber that was inserted but we need to recurse down its
+  // children to find all the terminal nodes.
+
+  if (isContainer) {
+    insertOrAppendPlacementNodeIntoContainer(finishedWork, before, parent);
+  } else {
+    insertOrAppendPlacementNode(finishedWork, before, parent);
+  }
+}
+
+function insertOrAppendPlacementNodeIntoContainer(node, before, parent) {
+  var tag = node.tag;
+  var isHost = tag === HostComponent || tag === HostText;
+
+  if (isHost || enableFundamentalAPI ) {
+    var stateNode = isHost ? node.stateNode : node.stateNode.instance;
+
+    if (before) {
+      insertInContainerBefore(parent, stateNode, before);
+    } else {
+      appendChildToContainer(parent, stateNode);
+    }
+  } else if (tag === HostPortal) ; else {
+    var child = node.child;
+
+    if (child !== null) {
+      insertOrAppendPlacementNodeIntoContainer(child, before, parent);
+      var sibling = child.sibling;
+
+      while (sibling !== null) {
+        insertOrAppendPlacementNodeIntoContainer(sibling, before, parent);
+        sibling = sibling.sibling;
+      }
+    }
+  }
+}
+
+function insertOrAppendPlacementNode(node, before, parent) {
+  var tag = node.tag;
+  var isHost = tag === HostComponent || tag === HostText;
+
+  if (isHost || enableFundamentalAPI ) {
+    var stateNode = isHost ? node.stateNode : node.stateNode.instance;
+
+    if (before) {
+      insertBefore(parent, stateNode, before);
+    } else {
+      appendChild(parent, stateNode);
+    }
+  } else if (tag === HostPortal) ; else {
+    var child = node.child;
+
+    if (child !== null) {
+      insertOrAppendPlacementNode(child, before, parent);
+      var sibling = child.sibling;
+
+      while (sibling !== null) {
+        insertOrAppendPlacementNode(sibling, before, parent);
+        sibling = sibling.sibling;
+      }
+    }
+  }
+}
+
+function unmountHostComponents(finishedRoot, current, renderPriorityLevel) {
+  // We only have the top Fiber that was deleted but we need to recurse down its
+  // children to find all the terminal nodes.
+  var node = current; // Each iteration, currentParent is populated with node's host parent if not
+  // currentParentIsValid.
+
+  var currentParentIsValid = false; // Note: these two variables *must* always be updated together.
+
+  var currentParent;
+  var currentParentIsContainer;
+
+  while (true) {
+    if (!currentParentIsValid) {
+      var parent = node.return;
+
+      findParent: while (true) {
+        if (!(parent !== null)) {
+          {
+            throw Error( "Expected to find a host parent. This error is likely caused by a bug in React. Please file an issue." );
+          }
+        }
+
+        var parentStateNode = parent.stateNode;
+
+        switch (parent.tag) {
+          case HostComponent:
+            currentParent = parentStateNode;
+            currentParentIsContainer = false;
+            break findParent;
+
+          case HostRoot:
+            currentParent = parentStateNode.containerInfo;
+            currentParentIsContainer = true;
+            break findParent;
+
+          case HostPortal:
+            currentParent = parentStateNode.containerInfo;
+            currentParentIsContainer = true;
+            break findParent;
+
+        }
+
+        parent = parent.return;
+      }
+
+      currentParentIsValid = true;
+    }
+
+    if (node.tag === HostComponent || node.tag === HostText) {
+      commitNestedUnmounts(finishedRoot, node, renderPriorityLevel); // After all the children have unmounted, it is now safe to remove the
+      // node from the tree.
+
+      if (currentParentIsContainer) {
+        removeChildFromContainer(currentParent, node.stateNode);
+      } else {
+        removeChild(currentParent, node.stateNode);
+      } // Don't visit children because we already visited them.
+
+    } else if (node.tag === HostPortal) {
+      if (node.child !== null) {
+        // When we go into a portal, it becomes the parent to remove from.
+        // We will reassign it back when we pop the portal on the way up.
+        currentParent = node.stateNode.containerInfo;
+        currentParentIsContainer = true; // Visit children because portals might contain host components.
+
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+    } else {
+      commitUnmount(finishedRoot, node, renderPriorityLevel); // Visit children because we may find more host components below.
+
+      if (node.child !== null) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+    }
+
+    if (node === current) {
+      return;
+    }
+
+    while (node.sibling === null) {
+      if (node.return === null || node.return === current) {
+        return;
+      }
+
+      node = node.return;
+
+      if (node.tag === HostPortal) {
+        // When we go out of the portal, we need to restore the parent.
+        // Since we don't keep a stack of them, we will search for it.
+        currentParentIsValid = false;
+      }
+    }
+
+    node.sibling.return = node.return;
+    node = node.sibling;
+  }
+}
+
+function commitDeletion(finishedRoot, current, renderPriorityLevel) {
+  {
+    // Recursively delete all host nodes from the parent.
+    // Detach refs and call componentWillUnmount() on the whole subtree.
+    unmountHostComponents(finishedRoot, current, renderPriorityLevel);
+  }
+
+  detachFiber(current);
+}
+
+function commitWork(current, finishedWork) {
+
+  switch (finishedWork.tag) {
+    case FunctionComponent:
+    case ForwardRef:
+    case MemoComponent:
+    case SimpleMemoComponent:
+    case Block:
+      {
+        // Layout effects are destroyed during the mutation phase so that all
+        // destroy functions for all fibers are called before any create functions.
+        // This prevents sibling component effects from interfering with each other,
+        // e.g. a destroy function in one component should never override a ref set
+        // by a create function in another component during the same commit.
+        commitHookEffectListUnmount(Layout | HasEffect, finishedWork);
+        return;
+      }
+
+    case ClassComponent:
+      {
+        return;
+      }
+
+    case HostComponent:
+      {
+        var instance = finishedWork.stateNode;
+
+        if (instance != null) {
+          // Commit the work prepared earlier.
+          var newProps = finishedWork.memoizedProps; // For hydration we reuse the update path but we treat the oldProps
+          // as the newProps. The updatePayload will contain the real change in
+          // this case.
+
+          var oldProps = current !== null ? current.memoizedProps : newProps;
+          var type = finishedWork.type; // TODO: Type the updateQueue to be specific to host components.
+
+          var updatePayload = finishedWork.updateQueue;
+          finishedWork.updateQueue = null;
+
+          if (updatePayload !== null) {
+            commitUpdate(instance, updatePayload, type, oldProps, newProps);
+          }
+        }
+
+        return;
+      }
+
+    case HostText:
+      {
+        if (!(finishedWork.stateNode !== null)) {
+          {
+            throw Error( "This should have a text node initialized. This error is likely caused by a bug in React. Please file an issue." );
+          }
+        }
+
+        var textInstance = finishedWork.stateNode;
+        var newText = finishedWork.memoizedProps; // For hydration we reuse the update path but we treat the oldProps
+        // as the newProps. The updatePayload will contain the real change in
+        // this case.
+
+        var oldText = current !== null ? current.memoizedProps : newText;
+        commitTextUpdate(textInstance, oldText, newText);
+        return;
+      }
+
+    case HostRoot:
+      {
+        {
+          var _root = finishedWork.stateNode;
+
+          if (_root.hydrate) {
+            // We've just hydrated. No need to hydrate again.
+            _root.hydrate = false;
+            commitHydratedContainer(_root.containerInfo);
+          }
+        }
+
+        return;
+      }
+
+    case Profiler:
+      {
+        return;
+      }
+
+    case SuspenseComponent:
+      {
+        commitSuspenseComponent(finishedWork);
+        attachSuspenseRetryListeners(finishedWork);
+        return;
+      }
+
+    case SuspenseListComponent:
+      {
+        attachSuspenseRetryListeners(finishedWork);
+        return;
+      }
+
+    case IncompleteClassComponent:
+      {
+        return;
+      }
+  }
+
+  {
+    {
+      throw Error( "This unit of work tag should not have side-effects. This error is likely caused by a bug in React. Please file an issue." );
+    }
+  }
+}
+
+function commitSuspenseComponent(finishedWork) {
+  var newState = finishedWork.memoizedState;
+  var newDidTimeout;
+  var primaryChildParent = finishedWork;
+
+  if (newState === null) {
+    newDidTimeout = false;
+  } else {
+    newDidTimeout = true;
+    primaryChildParent = finishedWork.child;
+    markCommitTimeOfFallback();
+  }
+
+  if ( primaryChildParent !== null) {
+    hideOrUnhideAllChildren(primaryChildParent, newDidTimeout);
+  }
+}
+
+function commitSuspenseHydrationCallbacks(finishedRoot, finishedWork) {
+
+  var newState = finishedWork.memoizedState;
+
+  if (newState === null) {
+    var current = finishedWork.alternate;
+
+    if (current !== null) {
+      var prevState = current.memoizedState;
+
+      if (prevState !== null) {
+        var suspenseInstance = prevState.dehydrated;
+
+        if (suspenseInstance !== null) {
+          commitHydratedSuspenseInstance(suspenseInstance);
+        }
+      }
+    }
+  }
+}
+
+function attachSuspenseRetryListeners(finishedWork) {
+  // If this boundary just timed out, then it will have a set of thenables.
+  // For each thenable, attach a listener so that when it resolves, React
+  // attempts to re-render the boundary in the primary (pre-timeout) state.
+  var thenables = finishedWork.updateQueue;
+
+  if (thenables !== null) {
+    finishedWork.updateQueue = null;
+    var retryCache = finishedWork.stateNode;
+
+    if (retryCache === null) {
+      retryCache = finishedWork.stateNode = new PossiblyWeakSet();
+    }
+
+    thenables.forEach(function (thenable) {
+      // Memoize using the boundary fiber to prevent redundant listeners.
+      var retry = resolveRetryThenable.bind(null, finishedWork, thenable);
+
+      if (!retryCache.has(thenable)) {
+        {
+          if (thenable.__reactDoNotTraceInteractions !== true) {
+            retry = tracing.unstable_wrap(retry);
+          }
+        }
+
+        retryCache.add(thenable);
+        thenable.then(retry, retry);
+      }
+    });
+  }
+}
+
+function commitResetTextContent(current) {
+
+  resetTextContent(current.stateNode);
+}
+
+var PossiblyWeakMap$1 = typeof WeakMap === 'function' ? WeakMap : Map;
+
+function createRootErrorUpdate(fiber, errorInfo, expirationTime) {
+  var update = createUpdate(expirationTime, null); // Unmount the root by rendering null.
+
+  update.tag = CaptureUpdate; // Caution: React DevTools currently depends on this property
+  // being called "element".
+
+  update.payload = {
+    element: null
+  };
+  var error = errorInfo.value;
+
+  update.callback = function () {
+    onUncaughtError(error);
+    logError(fiber, errorInfo);
+  };
+
+  return update;
+}
+
+function createClassErrorUpdate(fiber, errorInfo, expirationTime) {
+  var update = createUpdate(expirationTime, null);
+  update.tag = CaptureUpdate;
+  var getDerivedStateFromError = fiber.type.getDerivedStateFromError;
+
+  if (typeof getDerivedStateFromError === 'function') {
+    var error$1 = errorInfo.value;
+
+    update.payload = function () {
+      logError(fiber, errorInfo);
+      return getDerivedStateFromError(error$1);
+    };
+  }
+
+  var inst = fiber.stateNode;
+
+  if (inst !== null && typeof inst.componentDidCatch === 'function') {
+    update.callback = function callback() {
+      {
+        markFailedErrorBoundaryForHotReloading(fiber);
+      }
+
+      if (typeof getDerivedStateFromError !== 'function') {
+        // To preserve the preexisting retry behavior of error boundaries,
+        // we keep track of which ones already failed during this batch.
+        // This gets reset before we yield back to the browser.
+        // TODO: Warn in strict mode if getDerivedStateFromError is
+        // not defined.
+        markLegacyErrorBoundaryAsFailed(this); // Only log here if componentDidCatch is the only error boundary method defined
+
+        logError(fiber, errorInfo);
+      }
+
+      var error$1 = errorInfo.value;
+      var stack = errorInfo.stack;
+      this.componentDidCatch(error$1, {
+        componentStack: stack !== null ? stack : ''
+      });
+
+      {
+        if (typeof getDerivedStateFromError !== 'function') {
+          // If componentDidCatch is the only error boundary method defined,
+          // then it needs to call setState to recover from errors.
+          // If no state update is scheduled then the boundary will swallow the error.
+          if (fiber.expirationTime !== Sync) {
+            error('%s: Error boundaries should implement getDerivedStateFromError(). ' + 'In that method, return a state update to display an error message or fallback UI.', getComponentName(fiber.type) || 'Unknown');
+          }
+        }
+      }
+    };
+  } else {
+    update.callback = function () {
+      markFailedErrorBoundaryForHotReloading(fiber);
+    };
+  }
+
+  return update;
+}
+
+function attachPingListener(root, renderExpirationTime, thenable) {
+  // Attach a listener to the promise to "ping" the root and retry. But
+  // only if one does not already exist for the current render expiration
+  // time (which acts like a "thread ID" here).
+  var pingCache = root.pingCache;
+  var threadIDs;
+
+  if (pingCache === null) {
+    pingCache = root.pingCache = new PossiblyWeakMap$1();
+    threadIDs = new Set();
+    pingCache.set(thenable, threadIDs);
+  } else {
+    threadIDs = pingCache.get(thenable);
+
+    if (threadIDs === undefined) {
+      threadIDs = new Set();
+      pingCache.set(thenable, threadIDs);
+    }
+  }
+
+  if (!threadIDs.has(renderExpirationTime)) {
+    // Memoize using the thread ID to prevent redundant listeners.
+    threadIDs.add(renderExpirationTime);
+    var ping = pingSuspendedRoot.bind(null, root, thenable, renderExpirationTime);
+    thenable.then(ping, ping);
+  }
+}
+
+function throwException(root, returnFiber, sourceFiber, value, renderExpirationTime) {
+  // The source fiber did not complete.
+  sourceFiber.effectTag |= Incomplete; // Its effect list is no longer valid.
+
+  sourceFiber.firstEffect = sourceFiber.lastEffect = null;
+
+  if (value !== null && typeof value === 'object' && typeof value.then === 'function') {
+    // This is a thenable.
+    var thenable = value;
+
+    if ((sourceFiber.mode & BlockingMode) === NoMode) {
+      // Reset the memoizedState to what it was before we attempted
+      // to render it.
+      var currentSource = sourceFiber.alternate;
+
+      if (currentSource) {
+        sourceFiber.updateQueue = currentSource.updateQueue;
+        sourceFiber.memoizedState = currentSource.memoizedState;
+        sourceFiber.expirationTime = currentSource.expirationTime;
+      } else {
+        sourceFiber.updateQueue = null;
+        sourceFiber.memoizedState = null;
+      }
+    }
+
+    var hasInvisibleParentBoundary = hasSuspenseContext(suspenseStackCursor.current, InvisibleParentSuspenseContext); // Schedule the nearest Suspense to re-render the timed out view.
+
+    var _workInProgress = returnFiber;
+
+    do {
+      if (_workInProgress.tag === SuspenseComponent && shouldCaptureSuspense(_workInProgress, hasInvisibleParentBoundary)) {
+        // Found the nearest boundary.
+        // Stash the promise on the boundary fiber. If the boundary times out, we'll
+        // attach another listener to flip the boundary back to its normal state.
+        var thenables = _workInProgress.updateQueue;
+
+        if (thenables === null) {
+          var updateQueue = new Set();
+          updateQueue.add(thenable);
+          _workInProgress.updateQueue = updateQueue;
+        } else {
+          thenables.add(thenable);
+        } // If the boundary is outside of blocking mode, we should *not*
+        // suspend the commit. Pretend as if the suspended component rendered
+        // null and keep rendering. In the commit phase, we'll schedule a
+        // subsequent synchronous update to re-render the Suspense.
+        //
+        // Note: It doesn't matter whether the component that suspended was
+        // inside a blocking mode tree. If the Suspense is outside of it, we
+        // should *not* suspend the commit.
+
+
+        if ((_workInProgress.mode & BlockingMode) === NoMode) {
+          _workInProgress.effectTag |= DidCapture; // We're going to commit this fiber even though it didn't complete.
+          // But we shouldn't call any lifecycle methods or callbacks. Remove
+          // all lifecycle effect tags.
+
+          sourceFiber.effectTag &= ~(LifecycleEffectMask | Incomplete);
+
+          if (sourceFiber.tag === ClassComponent) {
+            var currentSourceFiber = sourceFiber.alternate;
+
+            if (currentSourceFiber === null) {
+              // This is a new mount. Change the tag so it's not mistaken for a
+              // completed class component. For example, we should not call
+              // componentWillUnmount if it is deleted.
+              sourceFiber.tag = IncompleteClassComponent;
+            } else {
+              // When we try rendering again, we should not reuse the current fiber,
+              // since it's known to be in an inconsistent state. Use a force update to
+              // prevent a bail out.
+              var update = createUpdate(Sync, null);
+              update.tag = ForceUpdate;
+              enqueueUpdate(sourceFiber, update);
+            }
+          } // The source fiber did not complete. Mark it with Sync priority to
+          // indicate that it still has pending work.
+
+
+          sourceFiber.expirationTime = Sync; // Exit without suspending.
+
+          return;
+        } // Confirmed that the boundary is in a concurrent mode tree. Continue
+        // with the normal suspend path.
+        //
+        // After this we'll use a set of heuristics to determine whether this
+        // render pass will run to completion or restart or "suspend" the commit.
+        // The actual logic for this is spread out in different places.
+        //
+        // This first principle is that if we're going to suspend when we complete
+        // a root, then we should also restart if we get an update or ping that
+        // might unsuspend it, and vice versa. The only reason to suspend is
+        // because you think you might want to restart before committing. However,
+        // it doesn't make sense to restart only while in the period we're suspended.
+        //
+        // Restarting too aggressively is also not good because it starves out any
+        // intermediate loading state. So we use heuristics to determine when.
+        // Suspense Heuristics
+        //
+        // If nothing threw a Promise or all the same fallbacks are already showing,
+        // then don't suspend/restart.
+        //
+        // If this is an initial render of a new tree of Suspense boundaries and
+        // those trigger a fallback, then don't suspend/restart. We want to ensure
+        // that we can show the initial loading state as quickly as possible.
+        //
+        // If we hit a "Delayed" case, such as when we'd switch from content back into
+        // a fallback, then we should always suspend/restart. SuspenseConfig applies to
+        // this case. If none is defined, JND is used instead.
+        //
+        // If we're already showing a fallback and it gets "retried", allowing us to show
+        // another level, but there's still an inner boundary that would show a fallback,
+        // then we suspend/restart for 500ms since the last time we showed a fallback
+        // anywhere in the tree. This effectively throttles progressive loading into a
+        // consistent train of commits. This also gives us an opportunity to restart to
+        // get to the completed state slightly earlier.
+        //
+        // If there's ambiguity due to batching it's resolved in preference of:
+        // 1) "delayed", 2) "initial render", 3) "retry".
+        //
+        // We want to ensure that a "busy" state doesn't get force committed. We want to
+        // ensure that new initial loading states can commit as soon as possible.
+
+
+        attachPingListener(root, renderExpirationTime, thenable);
+        _workInProgress.effectTag |= ShouldCapture;
+        _workInProgress.expirationTime = renderExpirationTime;
+        return;
+      } // This boundary already captured during this render. Continue to the next
+      // boundary.
+
+
+      _workInProgress = _workInProgress.return;
+    } while (_workInProgress !== null); // No boundary was found. Fallthrough to error mode.
+    // TODO: Use invariant so the message is stripped in prod?
+
+
+    value = new Error((getComponentName(sourceFiber.type) || 'A React component') + ' suspended while rendering, but no fallback UI was specified.\n' + '\n' + 'Add a <Suspense fallback=...> component higher in the tree to ' + 'provide a loading indicator or placeholder to display.' + getStackByFiberInDevAndProd(sourceFiber));
+  } // We didn't find a boundary that could handle this type of exception. Start
+  // over and traverse parent path again, this time treating the exception
+  // as an error.
+
+
+  renderDidError();
+  value = createCapturedValue(value, sourceFiber);
+  var workInProgress = returnFiber;
+
+  do {
+    switch (workInProgress.tag) {
+      case HostRoot:
+        {
+          var _errorInfo = value;
+          workInProgress.effectTag |= ShouldCapture;
+          workInProgress.expirationTime = renderExpirationTime;
+
+          var _update = createRootErrorUpdate(workInProgress, _errorInfo, renderExpirationTime);
+
+          enqueueCapturedUpdate(workInProgress, _update);
+          return;
+        }
+
+      case ClassComponent:
+        // Capture and retry
+        var errorInfo = value;
+        var ctor = workInProgress.type;
+        var instance = workInProgress.stateNode;
+
+        if ((workInProgress.effectTag & DidCapture) === NoEffect && (typeof ctor.getDerivedStateFromError === 'function' || instance !== null && typeof instance.componentDidCatch === 'function' && !isAlreadyFailedLegacyErrorBoundary(instance))) {
+          workInProgress.effectTag |= ShouldCapture;
+          workInProgress.expirationTime = renderExpirationTime; // Schedule the error boundary to re-render using updated state
+
+          var _update2 = createClassErrorUpdate(workInProgress, errorInfo, renderExpirationTime);
+
+          enqueueCapturedUpdate(workInProgress, _update2);
+          return;
+        }
+
+        break;
+    }
+
+    workInProgress = workInProgress.return;
+  } while (workInProgress !== null);
+}
+
+var ceil = Math.ceil;
+var ReactCurrentDispatcher$1 = ReactSharedInternals.ReactCurrentDispatcher,
+    ReactCurrentOwner$2 = ReactSharedInternals.ReactCurrentOwner,
+    IsSomeRendererActing = ReactSharedInternals.IsSomeRendererActing;
+var NoContext =
+/*                    */
+0;
+var BatchedContext =
+/*               */
+1;
+var EventContext =
+/*                 */
+2;
+var DiscreteEventContext =
+/*         */
+4;
+var LegacyUnbatchedContext =
+/*       */
+8;
+var RenderContext =
+/*                */
+16;
+var CommitContext =
+/*                */
+32;
+var RootIncomplete = 0;
+var RootFatalErrored = 1;
+var RootErrored = 2;
+var RootSuspended = 3;
+var RootSuspendedWithDelay = 4;
+var RootCompleted = 5;
+// Describes where we are in the React execution stack
+var executionContext = NoContext; // The root we're working on
+
+var workInProgressRoot = null; // The fiber we're working on
+
+var workInProgress = null; // The expiration time we're rendering
+
+var renderExpirationTime$1 = NoWork; // Whether to root completed, errored, suspended, etc.
+
+var workInProgressRootExitStatus = RootIncomplete; // A fatal error, if one is thrown
+
+var workInProgressRootFatalError = null; // Most recent event time among processed updates during this render.
+// This is conceptually a time stamp but expressed in terms of an ExpirationTime
+// because we deal mostly with expiration times in the hot path, so this avoids
+// the conversion happening in the hot path.
+
+var workInProgressRootLatestProcessedExpirationTime = Sync;
+var workInProgressRootLatestSuspenseTimeout = Sync;
+var workInProgressRootCanSuspendUsingConfig = null; // The work left over by components that were visited during this render. Only
+// includes unprocessed updates, not work in bailed out children.
+
+var workInProgressRootNextUnprocessedUpdateTime = NoWork; // If we're pinged while rendering we don't always restart immediately.
+// This flag determines if it might be worthwhile to restart if an opportunity
+// happens latere.
+
+var workInProgressRootHasPendingPing = false; // The most recent time we committed a fallback. This lets us ensure a train
+// model where we don't commit new loading states in too quick succession.
+
+var globalMostRecentFallbackTime = 0;
+var FALLBACK_THROTTLE_MS = 500;
+var nextEffect = null;
+var hasUncaughtError = false;
+var firstUncaughtError = null;
+var legacyErrorBoundariesThatAlreadyFailed = null;
+var rootDoesHavePassiveEffects = false;
+var rootWithPendingPassiveEffects = null;
+var pendingPassiveEffectsRenderPriority = NoPriority;
+var pendingPassiveEffectsExpirationTime = NoWork;
+var rootsWithPendingDiscreteUpdates = null; // Use these to prevent an infinite loop of nested updates
+
+var NESTED_UPDATE_LIMIT = 50;
+var nestedUpdateCount = 0;
+var rootWithNestedUpdates = null;
+var NESTED_PASSIVE_UPDATE_LIMIT = 50;
+var nestedPassiveUpdateCount = 0;
+var interruptedBy = null; // Marks the need to reschedule pending interactions at these expiration times
+// during the commit phase. This enables them to be traced across components
+// that spawn new work during render. E.g. hidden boundaries, suspended SSR
+// hydration or SuspenseList.
+
+var spawnedWorkDuringRender = null; // Expiration times are computed by adding to the current time (the start
+// time). However, if two updates are scheduled within the same event, we
+// should treat their start times as simultaneous, even if the actual clock
+// time has advanced between the first and second call.
+// In other words, because expiration times determine how updates are batched,
+// we want all updates of like priority that occur within the same event to
+// receive the same expiration time. Otherwise we get tearing.
+
+var currentEventTime = NoWork;
+function requestCurrentTimeForUpdate() {
+  if ((executionContext & (RenderContext | CommitContext)) !== NoContext) {
+    // We're inside React, so it's fine to read the actual time.
+    return msToExpirationTime(now());
+  } // We're not inside React, so we may be in the middle of a browser event.
+
+
+  if (currentEventTime !== NoWork) {
+    // Use the same start time for all updates until we enter React again.
+    return currentEventTime;
+  } // This is the first update since React yielded. Compute a new start time.
+
+
+  currentEventTime = msToExpirationTime(now());
+  return currentEventTime;
+}
+function getCurrentTime() {
+  return msToExpirationTime(now());
+}
+function computeExpirationForFiber(currentTime, fiber, suspenseConfig) {
+  var mode = fiber.mode;
+
+  if ((mode & BlockingMode) === NoMode) {
+    return Sync;
+  }
+
+  var priorityLevel = getCurrentPriorityLevel();
+
+  if ((mode & ConcurrentMode) === NoMode) {
+    return priorityLevel === ImmediatePriority ? Sync : Batched;
+  }
+
+  if ((executionContext & RenderContext) !== NoContext) {
+    // Use whatever time we're already rendering
+    // TODO: Should there be a way to opt out, like with `runWithPriority`?
+    return renderExpirationTime$1;
+  }
+
+  var expirationTime;
+
+  if (suspenseConfig !== null) {
+    // Compute an expiration time based on the Suspense timeout.
+    expirationTime = computeSuspenseExpiration(currentTime, suspenseConfig.timeoutMs | 0 || LOW_PRIORITY_EXPIRATION);
+  } else {
+    // Compute an expiration time based on the Scheduler priority.
+    switch (priorityLevel) {
+      case ImmediatePriority:
+        expirationTime = Sync;
+        break;
+
+      case UserBlockingPriority$1:
+        // TODO: Rename this to computeUserBlockingExpiration
+        expirationTime = computeInteractiveExpiration(currentTime);
+        break;
+
+      case NormalPriority:
+      case LowPriority:
+        // TODO: Handle LowPriority
+        // TODO: Rename this to... something better.
+        expirationTime = computeAsyncExpiration(currentTime);
+        break;
+
+      case IdlePriority:
+        expirationTime = Idle;
+        break;
+
+      default:
+        {
+          {
+            throw Error( "Expected a valid priority level" );
+          }
+        }
+
+    }
+  } // If we're in the middle of rendering a tree, do not update at the same
+  // expiration time that is already rendering.
+  // TODO: We shouldn't have to do this if the update is on a different root.
+  // Refactor computeExpirationForFiber + scheduleUpdate so we have access to
+  // the root when we check for this condition.
+
+
+  if (workInProgressRoot !== null && expirationTime === renderExpirationTime$1) {
+    // This is a trick to move this update into a separate batch
+    expirationTime -= 1;
+  }
+
+  return expirationTime;
+}
+function scheduleUpdateOnFiber(fiber, expirationTime) {
+  checkForNestedUpdates();
+  warnAboutRenderPhaseUpdatesInDEV(fiber);
+  var root = markUpdateTimeFromFiberToRoot(fiber, expirationTime);
+
+  if (root === null) {
+    warnAboutUpdateOnUnmountedFiberInDEV(fiber);
+    return;
+  }
+
+  checkForInterruption(fiber, expirationTime);
+  recordScheduleUpdate(); // TODO: computeExpirationForFiber also reads the priority. Pass the
+  // priority as an argument to that function and this one.
+
+  var priorityLevel = getCurrentPriorityLevel();
+
+  if (expirationTime === Sync) {
+    if ( // Check if we're inside unbatchedUpdates
+    (executionContext & LegacyUnbatchedContext) !== NoContext && // Check if we're not already rendering
+    (executionContext & (RenderContext | CommitContext)) === NoContext) {
+      // Register pending interactions on the root to avoid losing traced interaction data.
+      schedulePendingInteractions(root, expirationTime); // This is a legacy edge case. The initial mount of a ReactDOM.render-ed
+      // root inside of batchedUpdates should be synchronous, but layout updates
+      // should be deferred until the end of the batch.
+
+      performSyncWorkOnRoot(root);
+    } else {
+      ensureRootIsScheduled(root);
+      schedulePendingInteractions(root, expirationTime);
+
+      if (executionContext === NoContext) {
+        // Flush the synchronous work now, unless we're already working or inside
+        // a batch. This is intentionally inside scheduleUpdateOnFiber instead of
+        // scheduleCallbackForFiber to preserve the ability to schedule a callback
+        // without immediately flushing it. We only do this for user-initiated
+        // updates, to preserve historical behavior of legacy mode.
+        flushSyncCallbackQueue();
+      }
+    }
+  } else {
+    ensureRootIsScheduled(root);
+    schedulePendingInteractions(root, expirationTime);
+  }
+
+  if ((executionContext & DiscreteEventContext) !== NoContext && ( // Only updates at user-blocking priority or greater are considered
+  // discrete, even inside a discrete event.
+  priorityLevel === UserBlockingPriority$1 || priorityLevel === ImmediatePriority)) {
+    // This is the result of a discrete event. Track the lowest priority
+    // discrete update per root so we can flush them early, if needed.
+    if (rootsWithPendingDiscreteUpdates === null) {
+      rootsWithPendingDiscreteUpdates = new Map([[root, expirationTime]]);
+    } else {
+      var lastDiscreteTime = rootsWithPendingDiscreteUpdates.get(root);
+
+      if (lastDiscreteTime === undefined || lastDiscreteTime > expirationTime) {
+        rootsWithPendingDiscreteUpdates.set(root, expirationTime);
+      }
+    }
+  }
+}
+var scheduleWork = scheduleUpdateOnFiber; // This is split into a separate function so we can mark a fiber with pending
+// work without treating it as a typical update that originates from an event;
+// e.g. retrying a Suspense boundary isn't an update, but it does schedule work
+// on a fiber.
+
+function markUpdateTimeFromFiberToRoot(fiber, expirationTime) {
+  // Update the source fiber's expiration time
+  if (fiber.expirationTime < expirationTime) {
+    fiber.expirationTime = expirationTime;
+  }
+
+  var alternate = fiber.alternate;
+
+  if (alternate !== null && alternate.expirationTime < expirationTime) {
+    alternate.expirationTime = expirationTime;
+  } // Walk the parent path to the root and update the child expiration time.
+
+
+  var node = fiber.return;
+  var root = null;
+
+  if (node === null && fiber.tag === HostRoot) {
+    root = fiber.stateNode;
+  } else {
+    while (node !== null) {
+      alternate = node.alternate;
+
+      if (node.childExpirationTime < expirationTime) {
+        node.childExpirationTime = expirationTime;
+
+        if (alternate !== null && alternate.childExpirationTime < expirationTime) {
+          alternate.childExpirationTime = expirationTime;
+        }
+      } else if (alternate !== null && alternate.childExpirationTime < expirationTime) {
+        alternate.childExpirationTime = expirationTime;
+      }
+
+      if (node.return === null && node.tag === HostRoot) {
+        root = node.stateNode;
+        break;
+      }
+
+      node = node.return;
+    }
+  }
+
+  if (root !== null) {
+    if (workInProgressRoot === root) {
+      // Received an update to a tree that's in the middle of rendering. Mark
+      // that's unprocessed work on this root.
+      markUnprocessedUpdateTime(expirationTime);
+
+      if (workInProgressRootExitStatus === RootSuspendedWithDelay) {
+        // The root already suspended with a delay, which means this render
+        // definitely won't finish. Since we have a new update, let's mark it as
+        // suspended now, right before marking the incoming update. This has the
+        // effect of interrupting the current render and switching to the update.
+        // TODO: This happens to work when receiving an update during the render
+        // phase, because of the trick inside computeExpirationForFiber to
+        // subtract 1 from `renderExpirationTime` to move it into a
+        // separate bucket. But we should probably model it with an exception,
+        // using the same mechanism we use to force hydration of a subtree.
+        // TODO: This does not account for low pri updates that were already
+        // scheduled before the root started rendering. Need to track the next
+        // pending expiration time (perhaps by backtracking the return path) and
+        // then trigger a restart in the `renderDidSuspendDelayIfPossible` path.
+        markRootSuspendedAtTime(root, renderExpirationTime$1);
+      }
+    } // Mark that the root has a pending update.
+
+
+    markRootUpdatedAtTime(root, expirationTime);
+  }
+
+  return root;
+}
+
+function getNextRootExpirationTimeToWorkOn(root) {
+  // Determines the next expiration time that the root should render, taking
+  // into account levels that may be suspended, or levels that may have
+  // received a ping.
+  var lastExpiredTime = root.lastExpiredTime;
+
+  if (lastExpiredTime !== NoWork) {
+    return lastExpiredTime;
+  } // "Pending" refers to any update that hasn't committed yet, including if it
+  // suspended. The "suspended" range is therefore a subset.
+
+
+  var firstPendingTime = root.firstPendingTime;
+
+  if (!isRootSuspendedAtTime(root, firstPendingTime)) {
+    // The highest priority pending time is not suspended. Let's work on that.
+    return firstPendingTime;
+  } // If the first pending time is suspended, check if there's a lower priority
+  // pending level that we know about. Or check if we received a ping. Work
+  // on whichever is higher priority.
+
+
+  var lastPingedTime = root.lastPingedTime;
+  var nextKnownPendingLevel = root.nextKnownPendingLevel;
+  var nextLevel = lastPingedTime > nextKnownPendingLevel ? lastPingedTime : nextKnownPendingLevel;
+
+  if ( nextLevel <= Idle && firstPendingTime !== nextLevel) {
+    // Don't work on Idle/Never priority unless everything else is committed.
+    return NoWork;
+  }
+
+  return nextLevel;
+} // Use this function to schedule a task for a root. There's only one task per
+// root; if a task was already scheduled, we'll check to make sure the
+// expiration time of the existing task is the same as the expiration time of
+// the next level that the root has work on. This function is called on every
+// update, and right before exiting a task.
+
+
+function ensureRootIsScheduled(root) {
+  var lastExpiredTime = root.lastExpiredTime;
+
+  if (lastExpiredTime !== NoWork) {
+    // Special case: Expired work should flush synchronously.
+    root.callbackExpirationTime = Sync;
+    root.callbackPriority = ImmediatePriority;
+    root.callbackNode = scheduleSyncCallback(performSyncWorkOnRoot.bind(null, root));
+    return;
+  }
+
+  var expirationTime = getNextRootExpirationTimeToWorkOn(root);
+  var existingCallbackNode = root.callbackNode;
+
+  if (expirationTime === NoWork) {
+    // There's nothing to work on.
+    if (existingCallbackNode !== null) {
+      root.callbackNode = null;
+      root.callbackExpirationTime = NoWork;
+      root.callbackPriority = NoPriority;
+    }
+
+    return;
+  } // TODO: If this is an update, we already read the current time. Pass the
+  // time as an argument.
+
+
+  var currentTime = requestCurrentTimeForUpdate();
+  var priorityLevel = inferPriorityFromExpirationTime(currentTime, expirationTime); // If there's an existing render task, confirm it has the correct priority and
+  // expiration time. Otherwise, we'll cancel it and schedule a new one.
+
+  if (existingCallbackNode !== null) {
+    var existingCallbackPriority = root.callbackPriority;
+    var existingCallbackExpirationTime = root.callbackExpirationTime;
+
+    if ( // Callback must have the exact same expiration time.
+    existingCallbackExpirationTime === expirationTime && // Callback must have greater or equal priority.
+    existingCallbackPriority >= priorityLevel) {
+      // Existing callback is sufficient.
+      return;
+    } // Need to schedule a new task.
+    // TODO: Instead of scheduling a new task, we should be able to change the
+    // priority of the existing one.
+
+
+    cancelCallback(existingCallbackNode);
+  }
+
+  root.callbackExpirationTime = expirationTime;
+  root.callbackPriority = priorityLevel;
+  var callbackNode;
+
+  if (expirationTime === Sync) {
+    // Sync React callbacks are scheduled on a special internal queue
+    callbackNode = scheduleSyncCallback(performSyncWorkOnRoot.bind(null, root));
+  } else {
+    callbackNode = scheduleCallback(priorityLevel, performConcurrentWorkOnRoot.bind(null, root), // Compute a task timeout based on the expiration time. This also affects
+    // ordering because tasks are processed in timeout order.
+    {
+      timeout: expirationTimeToMs(expirationTime) - now()
+    });
+  }
+
+  root.callbackNode = callbackNode;
+} // This is the entry point for every concurrent task, i.e. anything that
+// goes through Scheduler.
+
+
+function performConcurrentWorkOnRoot(root, didTimeout) {
+  // Since we know we're in a React event, we can clear the current
+  // event time. The next update will compute a new event time.
+  currentEventTime = NoWork;
+
+  if (didTimeout) {
+    // The render task took too long to complete. Mark the current time as
+    // expired to synchronously render all expired work in a single batch.
+    var currentTime = requestCurrentTimeForUpdate();
+    markRootExpiredAtTime(root, currentTime); // This will schedule a synchronous callback.
+
+    ensureRootIsScheduled(root);
+    return null;
+  } // Determine the next expiration time to work on, using the fields stored
+  // on the root.
+
+
+  var expirationTime = getNextRootExpirationTimeToWorkOn(root);
+
+  if (expirationTime !== NoWork) {
+    var originalCallbackNode = root.callbackNode;
+
+    if (!((executionContext & (RenderContext | CommitContext)) === NoContext)) {
+      {
+        throw Error( "Should not already be working." );
+      }
+    }
+
+    flushPassiveEffects(); // If the root or expiration time have changed, throw out the existing stack
+    // and prepare a fresh one. Otherwise we'll continue where we left off.
+
+    if (root !== workInProgressRoot || expirationTime !== renderExpirationTime$1) {
+      prepareFreshStack(root, expirationTime);
+      startWorkOnPendingInteractions(root, expirationTime);
+    } // If we have a work-in-progress fiber, it means there's still work to do
+    // in this root.
+
+
+    if (workInProgress !== null) {
+      var prevExecutionContext = executionContext;
+      executionContext |= RenderContext;
+      var prevDispatcher = pushDispatcher();
+      var prevInteractions = pushInteractions(root);
+      startWorkLoopTimer(workInProgress);
+
+      do {
+        try {
+          workLoopConcurrent();
+          break;
+        } catch (thrownValue) {
+          handleError(root, thrownValue);
+        }
+      } while (true);
+
+      resetContextDependencies();
+      executionContext = prevExecutionContext;
+      popDispatcher(prevDispatcher);
+
+      {
+        popInteractions(prevInteractions);
+      }
+
+      if (workInProgressRootExitStatus === RootFatalErrored) {
+        var fatalError = workInProgressRootFatalError;
+        stopInterruptedWorkLoopTimer();
+        prepareFreshStack(root, expirationTime);
+        markRootSuspendedAtTime(root, expirationTime);
+        ensureRootIsScheduled(root);
+        throw fatalError;
+      }
+
+      if (workInProgress !== null) {
+        // There's still work left over. Exit without committing.
+        stopInterruptedWorkLoopTimer();
+      } else {
+        // We now have a consistent tree. The next step is either to commit it,
+        // or, if something suspended, wait to commit it after a timeout.
+        stopFinishedWorkLoopTimer();
+        var finishedWork = root.finishedWork = root.current.alternate;
+        root.finishedExpirationTime = expirationTime;
+        finishConcurrentRender(root, finishedWork, workInProgressRootExitStatus, expirationTime);
+      }
+
+      ensureRootIsScheduled(root);
+
+      if (root.callbackNode === originalCallbackNode) {
+        // The task node scheduled for this root is the same one that's
+        // currently executed. Need to return a continuation.
+        return performConcurrentWorkOnRoot.bind(null, root);
+      }
+    }
+  }
+
+  return null;
+}
+
+function finishConcurrentRender(root, finishedWork, exitStatus, expirationTime) {
+  // Set this to null to indicate there's no in-progress render.
+  workInProgressRoot = null;
+
+  switch (exitStatus) {
+    case RootIncomplete:
+    case RootFatalErrored:
+      {
+        {
+          {
+            throw Error( "Root did not complete. This is a bug in React." );
+          }
+        }
+      }
+    // Flow knows about invariant, so it complains if I add a break
+    // statement, but eslint doesn't know about invariant, so it complains
+    // if I do. eslint-disable-next-line no-fallthrough
+
+    case RootErrored:
+      {
+        // If this was an async render, the error may have happened due to
+        // a mutation in a concurrent event. Try rendering one more time,
+        // synchronously, to see if the error goes away. If there are
+        // lower priority updates, let's include those, too, in case they
+        // fix the inconsistency. Render at Idle to include all updates.
+        // If it was Idle or Never or some not-yet-invented time, render
+        // at that time.
+        markRootExpiredAtTime(root, expirationTime > Idle ? Idle : expirationTime); // We assume that this second render pass will be synchronous
+        // and therefore not hit this path again.
+
+        break;
+      }
+
+    case RootSuspended:
+      {
+        markRootSuspendedAtTime(root, expirationTime);
+        var lastSuspendedTime = root.lastSuspendedTime;
+
+        if (expirationTime === lastSuspendedTime) {
+          root.nextKnownPendingLevel = getRemainingExpirationTime(finishedWork);
+        } // We have an acceptable loading state. We need to figure out if we
+        // should immediately commit it or wait a bit.
+        // If we have processed new updates during this render, we may now
+        // have a new loading state ready. We want to ensure that we commit
+        // that as soon as possible.
+
+
+        var hasNotProcessedNewUpdates = workInProgressRootLatestProcessedExpirationTime === Sync;
+
+        if (hasNotProcessedNewUpdates && // do not delay if we're inside an act() scope
+        !( IsThisRendererActing.current)) {
+          // If we have not processed any new updates during this pass, then
+          // this is either a retry of an existing fallback state or a
+          // hidden tree. Hidden trees shouldn't be batched with other work
+          // and after that's fixed it can only be a retry. We're going to
+          // throttle committing retries so that we don't show too many
+          // loading states too quickly.
+          var msUntilTimeout = globalMostRecentFallbackTime + FALLBACK_THROTTLE_MS - now(); // Don't bother with a very short suspense time.
+
+          if (msUntilTimeout > 10) {
+            if (workInProgressRootHasPendingPing) {
+              var lastPingedTime = root.lastPingedTime;
+
+              if (lastPingedTime === NoWork || lastPingedTime >= expirationTime) {
+                // This render was pinged but we didn't get to restart
+                // earlier so try restarting now instead.
+                root.lastPingedTime = expirationTime;
+                prepareFreshStack(root, expirationTime);
+                break;
+              }
+            }
+
+            var nextTime = getNextRootExpirationTimeToWorkOn(root);
+
+            if (nextTime !== NoWork && nextTime !== expirationTime) {
+              // There's additional work on this root.
+              break;
+            }
+
+            if (lastSuspendedTime !== NoWork && lastSuspendedTime !== expirationTime) {
+              // We should prefer to render the fallback of at the last
+              // suspended level. Ping the last suspended level to try
+              // rendering it again.
+              root.lastPingedTime = lastSuspendedTime;
+              break;
+            } // The render is suspended, it hasn't timed out, and there's no
+            // lower priority work to do. Instead of committing the fallback
+            // immediately, wait for more data to arrive.
+
+
+            root.timeoutHandle = scheduleTimeout(commitRoot.bind(null, root), msUntilTimeout);
+            break;
+          }
+        } // The work expired. Commit immediately.
+
+
+        commitRoot(root);
+        break;
+      }
+
+    case RootSuspendedWithDelay:
+      {
+        markRootSuspendedAtTime(root, expirationTime);
+        var _lastSuspendedTime = root.lastSuspendedTime;
+
+        if (expirationTime === _lastSuspendedTime) {
+          root.nextKnownPendingLevel = getRemainingExpirationTime(finishedWork);
+        }
+
+        if ( // do not delay if we're inside an act() scope
+        !( IsThisRendererActing.current)) {
+          // We're suspended in a state that should be avoided. We'll try to
+          // avoid committing it for as long as the timeouts let us.
+          if (workInProgressRootHasPendingPing) {
+            var _lastPingedTime = root.lastPingedTime;
+
+            if (_lastPingedTime === NoWork || _lastPingedTime >= expirationTime) {
+              // This render was pinged but we didn't get to restart earlier
+              // so try restarting now instead.
+              root.lastPingedTime = expirationTime;
+              prepareFreshStack(root, expirationTime);
+              break;
+            }
+          }
+
+          var _nextTime = getNextRootExpirationTimeToWorkOn(root);
+
+          if (_nextTime !== NoWork && _nextTime !== expirationTime) {
+            // There's additional work on this root.
+            break;
+          }
+
+          if (_lastSuspendedTime !== NoWork && _lastSuspendedTime !== expirationTime) {
+            // We should prefer to render the fallback of at the last
+            // suspended level. Ping the last suspended level to try
+            // rendering it again.
+            root.lastPingedTime = _lastSuspendedTime;
+            break;
+          }
+
+          var _msUntilTimeout;
+
+          if (workInProgressRootLatestSuspenseTimeout !== Sync) {
+            // We have processed a suspense config whose expiration time we
+            // can use as the timeout.
+            _msUntilTimeout = expirationTimeToMs(workInProgressRootLatestSuspenseTimeout) - now();
+          } else if (workInProgressRootLatestProcessedExpirationTime === Sync) {
+            // This should never normally happen because only new updates
+            // cause delayed states, so we should have processed something.
+            // However, this could also happen in an offscreen tree.
+            _msUntilTimeout = 0;
+          } else {
+            // If we don't have a suspense config, we're going to use a
+            // heuristic to determine how long we can suspend.
+            var eventTimeMs = inferTimeFromExpirationTime(workInProgressRootLatestProcessedExpirationTime);
+            var currentTimeMs = now();
+            var timeUntilExpirationMs = expirationTimeToMs(expirationTime) - currentTimeMs;
+            var timeElapsed = currentTimeMs - eventTimeMs;
+
+            if (timeElapsed < 0) {
+              // We get this wrong some time since we estimate the time.
+              timeElapsed = 0;
+            }
+
+            _msUntilTimeout = jnd(timeElapsed) - timeElapsed; // Clamp the timeout to the expiration time. TODO: Once the
+            // event time is exact instead of inferred from expiration time
+            // we don't need this.
+
+            if (timeUntilExpirationMs < _msUntilTimeout) {
+              _msUntilTimeout = timeUntilExpirationMs;
+            }
+          } // Don't bother with a very short suspense time.
+
+
+          if (_msUntilTimeout > 10) {
+            // The render is suspended, it hasn't timed out, and there's no
+            // lower priority work to do. Instead of committing the fallback
+            // immediately, wait for more data to arrive.
+            root.timeoutHandle = scheduleTimeout(commitRoot.bind(null, root), _msUntilTimeout);
+            break;
+          }
+        } // The work expired. Commit immediately.
+
+
+        commitRoot(root);
+        break;
+      }
+
+    case RootCompleted:
+      {
+        // The work completed. Ready to commit.
+        if ( // do not delay if we're inside an act() scope
+        !( IsThisRendererActing.current) && workInProgressRootLatestProcessedExpirationTime !== Sync && workInProgressRootCanSuspendUsingConfig !== null) {
+          // If we have exceeded the minimum loading delay, which probably
+          // means we have shown a spinner already, we might have to suspend
+          // a bit longer to ensure that the spinner is shown for
+          // enough time.
+          var _msUntilTimeout2 = computeMsUntilSuspenseLoadingDelay(workInProgressRootLatestProcessedExpirationTime, expirationTime, workInProgressRootCanSuspendUsingConfig);
+
+          if (_msUntilTimeout2 > 10) {
+            markRootSuspendedAtTime(root, expirationTime);
+            root.timeoutHandle = scheduleTimeout(commitRoot.bind(null, root), _msUntilTimeout2);
+            break;
+          }
+        }
+
+        commitRoot(root);
+        break;
+      }
+
+    default:
+      {
+        {
+          {
+            throw Error( "Unknown root exit status." );
+          }
+        }
+      }
+  }
+} // This is the entry point for synchronous tasks that don't go
+// through Scheduler
+
+
+function performSyncWorkOnRoot(root) {
+  // Check if there's expired work on this root. Otherwise, render at Sync.
+  var lastExpiredTime = root.lastExpiredTime;
+  var expirationTime = lastExpiredTime !== NoWork ? lastExpiredTime : Sync;
+
+  if (!((executionContext & (RenderContext | CommitContext)) === NoContext)) {
+    {
+      throw Error( "Should not already be working." );
+    }
+  }
+
+  flushPassiveEffects(); // If the root or expiration time have changed, throw out the existing stack
+  // and prepare a fresh one. Otherwise we'll continue where we left off.
+
+  if (root !== workInProgressRoot || expirationTime !== renderExpirationTime$1) {
+    prepareFreshStack(root, expirationTime);
+    startWorkOnPendingInteractions(root, expirationTime);
+  } // If we have a work-in-progress fiber, it means there's still work to do
+  // in this root.
+
+
+  if (workInProgress !== null) {
+    var prevExecutionContext = executionContext;
+    executionContext |= RenderContext;
+    var prevDispatcher = pushDispatcher();
+    var prevInteractions = pushInteractions(root);
+    startWorkLoopTimer(workInProgress);
+
+    do {
+      try {
+        workLoopSync();
+        break;
+      } catch (thrownValue) {
+        handleError(root, thrownValue);
+      }
+    } while (true);
+
+    resetContextDependencies();
+    executionContext = prevExecutionContext;
+    popDispatcher(prevDispatcher);
+
+    {
+      popInteractions(prevInteractions);
+    }
+
+    if (workInProgressRootExitStatus === RootFatalErrored) {
+      var fatalError = workInProgressRootFatalError;
+      stopInterruptedWorkLoopTimer();
+      prepareFreshStack(root, expirationTime);
+      markRootSuspendedAtTime(root, expirationTime);
+      ensureRootIsScheduled(root);
+      throw fatalError;
+    }
+
+    if (workInProgress !== null) {
+      // This is a sync render, so we should have finished the whole tree.
+      {
+        {
+          throw Error( "Cannot commit an incomplete root. This error is likely caused by a bug in React. Please file an issue." );
+        }
+      }
+    } else {
+      // We now have a consistent tree. Because this is a sync render, we
+      // will commit it even if something suspended.
+      stopFinishedWorkLoopTimer();
+      root.finishedWork = root.current.alternate;
+      root.finishedExpirationTime = expirationTime;
+      finishSyncRender(root);
+    } // Before exiting, make sure there's a callback scheduled for the next
+    // pending level.
+
+
+    ensureRootIsScheduled(root);
+  }
+
+  return null;
+}
+
+function finishSyncRender(root) {
+  // Set this to null to indicate there's no in-progress render.
+  workInProgressRoot = null;
+  commitRoot(root);
+}
+function flushDiscreteUpdates() {
+  // TODO: Should be able to flush inside batchedUpdates, but not inside `act`.
+  // However, `act` uses `batchedUpdates`, so there's no way to distinguish
+  // those two cases. Need to fix this before exposing flushDiscreteUpdates
+  // as a public API.
+  if ((executionContext & (BatchedContext | RenderContext | CommitContext)) !== NoContext) {
+    {
+      if ((executionContext & RenderContext) !== NoContext) {
+        error('unstable_flushDiscreteUpdates: Cannot flush updates when React is ' + 'already rendering.');
+      }
+    } // We're already rendering, so we can't synchronously flush pending work.
+    // This is probably a nested event dispatch triggered by a lifecycle/effect,
+    // like `el.focus()`. Exit.
+
+
+    return;
+  }
+
+  flushPendingDiscreteUpdates(); // If the discrete updates scheduled passive effects, flush them now so that
+  // they fire before the next serial event.
+
+  flushPassiveEffects();
+}
+function syncUpdates(fn, a, b, c) {
+  return runWithPriority$1(ImmediatePriority, fn.bind(null, a, b, c));
+}
+
+function flushPendingDiscreteUpdates() {
+  if (rootsWithPendingDiscreteUpdates !== null) {
+    // For each root with pending discrete updates, schedule a callback to
+    // immediately flush them.
+    var roots = rootsWithPendingDiscreteUpdates;
+    rootsWithPendingDiscreteUpdates = null;
+    roots.forEach(function (expirationTime, root) {
+      markRootExpiredAtTime(root, expirationTime);
+      ensureRootIsScheduled(root);
+    }); // Now flush the immediate queue.
+
+    flushSyncCallbackQueue();
+  }
+}
+
+function batchedUpdates$1(fn, a) {
+  var prevExecutionContext = executionContext;
+  executionContext |= BatchedContext;
+
+  try {
+    return fn(a);
+  } finally {
+    executionContext = prevExecutionContext;
+
+    if (executionContext === NoContext) {
+      // Flush the immediate callbacks that were scheduled during this batch
+      flushSyncCallbackQueue();
+    }
+  }
+}
+function batchedEventUpdates$1(fn, a) {
+  var prevExecutionContext = executionContext;
+  executionContext |= EventContext;
+
+  try {
+    return fn(a);
+  } finally {
+    executionContext = prevExecutionContext;
+
+    if (executionContext === NoContext) {
+      // Flush the immediate callbacks that were scheduled during this batch
+      flushSyncCallbackQueue();
+    }
+  }
+}
+function discreteUpdates$1(fn, a, b, c, d) {
+  var prevExecutionContext = executionContext;
+  executionContext |= DiscreteEventContext;
+
+  try {
+    // Should this
+    return runWithPriority$1(UserBlockingPriority$1, fn.bind(null, a, b, c, d));
+  } finally {
+    executionContext = prevExecutionContext;
+
+    if (executionContext === NoContext) {
+      // Flush the immediate callbacks that were scheduled during this batch
+      flushSyncCallbackQueue();
+    }
+  }
+}
+function unbatchedUpdates(fn, a) {
+  var prevExecutionContext = executionContext;
+  executionContext &= ~BatchedContext;
+  executionContext |= LegacyUnbatchedContext;
+
+  try {
+    return fn(a);
+  } finally {
+    executionContext = prevExecutionContext;
+
+    if (executionContext === NoContext) {
+      // Flush the immediate callbacks that were scheduled during this batch
+      flushSyncCallbackQueue();
+    }
+  }
+}
+function flushSync(fn, a) {
+  if ((executionContext & (RenderContext | CommitContext)) !== NoContext) {
+    {
+      {
+        throw Error( "flushSync was called from inside a lifecycle method. It cannot be called when React is already rendering." );
+      }
+    }
+  }
+
+  var prevExecutionContext = executionContext;
+  executionContext |= BatchedContext;
+
+  try {
+    return runWithPriority$1(ImmediatePriority, fn.bind(null, a));
+  } finally {
+    executionContext = prevExecutionContext; // Flush the immediate callbacks that were scheduled during this batch.
+    // Note that this will happen even if batchedUpdates is higher up
+    // the stack.
+
+    flushSyncCallbackQueue();
+  }
+}
+
+function prepareFreshStack(root, expirationTime) {
+  root.finishedWork = null;
+  root.finishedExpirationTime = NoWork;
+  var timeoutHandle = root.timeoutHandle;
+
+  if (timeoutHandle !== noTimeout) {
+    // The root previous suspended and scheduled a timeout to commit a fallback
+    // state. Now that we have additional work, cancel the timeout.
+    root.timeoutHandle = noTimeout; // $FlowFixMe Complains noTimeout is not a TimeoutID, despite the check above
+
+    cancelTimeout(timeoutHandle);
+  }
+
+  if (workInProgress !== null) {
+    var interruptedWork = workInProgress.return;
+
+    while (interruptedWork !== null) {
+      unwindInterruptedWork(interruptedWork);
+      interruptedWork = interruptedWork.return;
+    }
+  }
+
+  workInProgressRoot = root;
+  workInProgress = createWorkInProgress(root.current, null);
+  renderExpirationTime$1 = expirationTime;
+  workInProgressRootExitStatus = RootIncomplete;
+  workInProgressRootFatalError = null;
+  workInProgressRootLatestProcessedExpirationTime = Sync;
+  workInProgressRootLatestSuspenseTimeout = Sync;
+  workInProgressRootCanSuspendUsingConfig = null;
+  workInProgressRootNextUnprocessedUpdateTime = NoWork;
+  workInProgressRootHasPendingPing = false;
+
+  {
+    spawnedWorkDuringRender = null;
+  }
+
+  {
+    ReactStrictModeWarnings.discardPendingWarnings();
+  }
+}
+
+function handleError(root, thrownValue) {
+  do {
+    try {
+      // Reset module-level state that was set during the render phase.
+      resetContextDependencies();
+      resetHooksAfterThrow();
+      resetCurrentFiber();
+
+      if (workInProgress === null || workInProgress.return === null) {
+        // Expected to be working on a non-root fiber. This is a fatal error
+        // because there's no ancestor that can handle it; the root is
+        // supposed to capture all errors that weren't caught by an error
+        // boundary.
+        workInProgressRootExitStatus = RootFatalErrored;
+        workInProgressRootFatalError = thrownValue; // Set `workInProgress` to null. This represents advancing to the next
+        // sibling, or the parent if there are no siblings. But since the root
+        // has no siblings nor a parent, we set it to null. Usually this is
+        // handled by `completeUnitOfWork` or `unwindWork`, but since we're
+        // interntionally not calling those, we need set it here.
+        // TODO: Consider calling `unwindWork` to pop the contexts.
+
+        workInProgress = null;
+        return null;
+      }
+
+      if (enableProfilerTimer && workInProgress.mode & ProfileMode) {
+        // Record the time spent rendering before an error was thrown. This
+        // avoids inaccurate Profiler durations in the case of a
+        // suspended render.
+        stopProfilerTimerIfRunningAndRecordDelta(workInProgress, true);
+      }
+
+      throwException(root, workInProgress.return, workInProgress, thrownValue, renderExpirationTime$1);
+      workInProgress = completeUnitOfWork(workInProgress);
+    } catch (yetAnotherThrownValue) {
+      // Something in the return path also threw.
+      thrownValue = yetAnotherThrownValue;
+      continue;
+    } // Return to the normal work loop.
+
+
+    return;
+  } while (true);
+}
+
+function pushDispatcher(root) {
+  var prevDispatcher = ReactCurrentDispatcher$1.current;
+  ReactCurrentDispatcher$1.current = ContextOnlyDispatcher;
+
+  if (prevDispatcher === null) {
+    // The React isomorphic package does not include a default dispatcher.
+    // Instead the first renderer will lazily attach one, in order to give
+    // nicer error messages.
+    return ContextOnlyDispatcher;
+  } else {
+    return prevDispatcher;
+  }
+}
+
+function popDispatcher(prevDispatcher) {
+  ReactCurrentDispatcher$1.current = prevDispatcher;
+}
+
+function pushInteractions(root) {
+  {
+    var prevInteractions = tracing.__interactionsRef.current;
+    tracing.__interactionsRef.current = root.memoizedInteractions;
+    return prevInteractions;
+  }
+}
+
+function popInteractions(prevInteractions) {
+  {
+    tracing.__interactionsRef.current = prevInteractions;
+  }
+}
+
+function markCommitTimeOfFallback() {
+  globalMostRecentFallbackTime = now();
+}
+function markRenderEventTimeAndConfig(expirationTime, suspenseConfig) {
+  if (expirationTime < workInProgressRootLatestProcessedExpirationTime && expirationTime > Idle) {
+    workInProgressRootLatestProcessedExpirationTime = expirationTime;
+  }
+
+  if (suspenseConfig !== null) {
+    if (expirationTime < workInProgressRootLatestSuspenseTimeout && expirationTime > Idle) {
+      workInProgressRootLatestSuspenseTimeout = expirationTime; // Most of the time we only have one config and getting wrong is not bad.
+
+      workInProgressRootCanSuspendUsingConfig = suspenseConfig;
+    }
+  }
+}
+function markUnprocessedUpdateTime(expirationTime) {
+  if (expirationTime > workInProgressRootNextUnprocessedUpdateTime) {
+    workInProgressRootNextUnprocessedUpdateTime = expirationTime;
+  }
+}
+function renderDidSuspend() {
+  if (workInProgressRootExitStatus === RootIncomplete) {
+    workInProgressRootExitStatus = RootSuspended;
+  }
+}
+function renderDidSuspendDelayIfPossible() {
+  if (workInProgressRootExitStatus === RootIncomplete || workInProgressRootExitStatus === RootSuspended) {
+    workInProgressRootExitStatus = RootSuspendedWithDelay;
+  } // Check if there's a lower priority update somewhere else in the tree.
+
+
+  if (workInProgressRootNextUnprocessedUpdateTime !== NoWork && workInProgressRoot !== null) {
+    // Mark the current render as suspended, and then mark that there's a
+    // pending update.
+    // TODO: This should immediately interrupt the current render, instead
+    // of waiting until the next time we yield.
+    markRootSuspendedAtTime(workInProgressRoot, renderExpirationTime$1);
+    markRootUpdatedAtTime(workInProgressRoot, workInProgressRootNextUnprocessedUpdateTime);
+  }
+}
+function renderDidError() {
+  if (workInProgressRootExitStatus !== RootCompleted) {
+    workInProgressRootExitStatus = RootErrored;
+  }
+} // Called during render to determine if anything has suspended.
+// Returns false if we're not sure.
+
+function renderHasNotSuspendedYet() {
+  // If something errored or completed, we can't really be sure,
+  // so those are false.
+  return workInProgressRootExitStatus === RootIncomplete;
+}
+
+function inferTimeFromExpirationTime(expirationTime) {
+  // We don't know exactly when the update was scheduled, but we can infer an
+  // approximate start time from the expiration time.
+  var earliestExpirationTimeMs = expirationTimeToMs(expirationTime);
+  return earliestExpirationTimeMs - LOW_PRIORITY_EXPIRATION;
+}
+
+function inferTimeFromExpirationTimeWithSuspenseConfig(expirationTime, suspenseConfig) {
+  // We don't know exactly when the update was scheduled, but we can infer an
+  // approximate start time from the expiration time by subtracting the timeout
+  // that was added to the event time.
+  var earliestExpirationTimeMs = expirationTimeToMs(expirationTime);
+  return earliestExpirationTimeMs - (suspenseConfig.timeoutMs | 0 || LOW_PRIORITY_EXPIRATION);
+} // The work loop is an extremely hot path. Tell Closure not to inline it.
+
+/** @noinline */
+
+
+function workLoopSync() {
+  // Already timed out, so perform work without checking if we need to yield.
+  while (workInProgress !== null) {
+    workInProgress = performUnitOfWork(workInProgress);
+  }
+}
+/** @noinline */
+
+
+function workLoopConcurrent() {
+  // Perform work until Scheduler asks us to yield
+  while (workInProgress !== null && !shouldYield()) {
+    workInProgress = performUnitOfWork(workInProgress);
+  }
+}
+
+function performUnitOfWork(unitOfWork) {
+  // The current, flushed, state of this fiber is the alternate. Ideally
+  // nothing should rely on this, but relying on it here means that we don't
+  // need an additional field on the work in progress.
+  var current = unitOfWork.alternate;
+  startWorkTimer(unitOfWork);
+  setCurrentFiber(unitOfWork);
+  var next;
+
+  if ( (unitOfWork.mode & ProfileMode) !== NoMode) {
+    startProfilerTimer(unitOfWork);
+    next = beginWork$1(current, unitOfWork, renderExpirationTime$1);
+    stopProfilerTimerIfRunningAndRecordDelta(unitOfWork, true);
+  } else {
+    next = beginWork$1(current, unitOfWork, renderExpirationTime$1);
+  }
+
+  resetCurrentFiber();
+  unitOfWork.memoizedProps = unitOfWork.pendingProps;
+
+  if (next === null) {
+    // If this doesn't spawn new work, complete the current work.
+    next = completeUnitOfWork(unitOfWork);
+  }
+
+  ReactCurrentOwner$2.current = null;
+  return next;
+}
+
+function completeUnitOfWork(unitOfWork) {
+  // Attempt to complete the current unit of work, then move to the next
+  // sibling. If there are no more siblings, return to the parent fiber.
+  workInProgress = unitOfWork;
+
+  do {
+    // The current, flushed, state of this fiber is the alternate. Ideally
+    // nothing should rely on this, but relying on it here means that we don't
+    // need an additional field on the work in progress.
+    var current = workInProgress.alternate;
+    var returnFiber = workInProgress.return; // Check if the work completed or if something threw.
+
+    if ((workInProgress.effectTag & Incomplete) === NoEffect) {
+      setCurrentFiber(workInProgress);
+      var next = void 0;
+
+      if ( (workInProgress.mode & ProfileMode) === NoMode) {
+        next = completeWork(current, workInProgress, renderExpirationTime$1);
+      } else {
+        startProfilerTimer(workInProgress);
+        next = completeWork(current, workInProgress, renderExpirationTime$1); // Update render duration assuming we didn't error.
+
+        stopProfilerTimerIfRunningAndRecordDelta(workInProgress, false);
+      }
+
+      stopWorkTimer(workInProgress);
+      resetCurrentFiber();
+      resetChildExpirationTime(workInProgress);
+
+      if (next !== null) {
+        // Completing this fiber spawned new work. Work on that next.
+        return next;
+      }
+
+      if (returnFiber !== null && // Do not append effects to parents if a sibling failed to complete
+      (returnFiber.effectTag & Incomplete) === NoEffect) {
+        // Append all the effects of the subtree and this fiber onto the effect
+        // list of the parent. The completion order of the children affects the
+        // side-effect order.
+        if (returnFiber.firstEffect === null) {
+          returnFiber.firstEffect = workInProgress.firstEffect;
+        }
+
+        if (workInProgress.lastEffect !== null) {
+          if (returnFiber.lastEffect !== null) {
+            returnFiber.lastEffect.nextEffect = workInProgress.firstEffect;
+          }
+
+          returnFiber.lastEffect = workInProgress.lastEffect;
+        } // If this fiber had side-effects, we append it AFTER the children's
+        // side-effects. We can perform certain side-effects earlier if needed,
+        // by doing multiple passes over the effect list. We don't want to
+        // schedule our own side-effect on our own list because if end up
+        // reusing children we'll schedule this effect onto itself since we're
+        // at the end.
+
+
+        var effectTag = workInProgress.effectTag; // Skip both NoWork and PerformedWork tags when creating the effect
+        // list. PerformedWork effect is read by React DevTools but shouldn't be
+        // committed.
+
+        if (effectTag > PerformedWork) {
+          if (returnFiber.lastEffect !== null) {
+            returnFiber.lastEffect.nextEffect = workInProgress;
+          } else {
+            returnFiber.firstEffect = workInProgress;
+          }
+
+          returnFiber.lastEffect = workInProgress;
+        }
+      }
+    } else {
+      // This fiber did not complete because something threw. Pop values off
+      // the stack without entering the complete phase. If this is a boundary,
+      // capture values if possible.
+      var _next = unwindWork(workInProgress); // Because this fiber did not complete, don't reset its expiration time.
+
+
+      if ( (workInProgress.mode & ProfileMode) !== NoMode) {
+        // Record the render duration for the fiber that errored.
+        stopProfilerTimerIfRunningAndRecordDelta(workInProgress, false); // Include the time spent working on failed children before continuing.
+
+        var actualDuration = workInProgress.actualDuration;
+        var child = workInProgress.child;
+
+        while (child !== null) {
+          actualDuration += child.actualDuration;
+          child = child.sibling;
+        }
+
+        workInProgress.actualDuration = actualDuration;
+      }
+
+      if (_next !== null) {
+        // If completing this work spawned new work, do that next. We'll come
+        // back here again.
+        // Since we're restarting, remove anything that is not a host effect
+        // from the effect tag.
+        // TODO: The name stopFailedWorkTimer is misleading because Suspense
+        // also captures and restarts.
+        stopFailedWorkTimer(workInProgress);
+        _next.effectTag &= HostEffectMask;
+        return _next;
+      }
+
+      stopWorkTimer(workInProgress);
+
+      if (returnFiber !== null) {
+        // Mark the parent fiber as incomplete and clear its effect list.
+        returnFiber.firstEffect = returnFiber.lastEffect = null;
+        returnFiber.effectTag |= Incomplete;
+      }
+    }
+
+    var siblingFiber = workInProgress.sibling;
+
+    if (siblingFiber !== null) {
+      // If there is more work to do in this returnFiber, do that next.
+      return siblingFiber;
+    } // Otherwise, return to the parent
+
+
+    workInProgress = returnFiber;
+  } while (workInProgress !== null); // We've reached the root.
+
+
+  if (workInProgressRootExitStatus === RootIncomplete) {
+    workInProgressRootExitStatus = RootCompleted;
+  }
+
+  return null;
+}
+
+function getRemainingExpirationTime(fiber) {
+  var updateExpirationTime = fiber.expirationTime;
+  var childExpirationTime = fiber.childExpirationTime;
+  return updateExpirationTime > childExpirationTime ? updateExpirationTime : childExpirationTime;
+}
+
+function resetChildExpirationTime(completedWork) {
+  if (renderExpirationTime$1 !== Never && completedWork.childExpirationTime === Never) {
+    // The children of this component are hidden. Don't bubble their
+    // expiration times.
+    return;
+  }
+
+  var newChildExpirationTime = NoWork; // Bubble up the earliest expiration time.
+
+  if ( (completedWork.mode & ProfileMode) !== NoMode) {
+    // In profiling mode, resetChildExpirationTime is also used to reset
+    // profiler durations.
+    var actualDuration = completedWork.actualDuration;
+    var treeBaseDuration = completedWork.selfBaseDuration; // When a fiber is cloned, its actualDuration is reset to 0. This value will
+    // only be updated if work is done on the fiber (i.e. it doesn't bailout).
+    // When work is done, it should bubble to the parent's actualDuration. If
+    // the fiber has not been cloned though, (meaning no work was done), then
+    // this value will reflect the amount of time spent working on a previous
+    // render. In that case it should not bubble. We determine whether it was
+    // cloned by comparing the child pointer.
+
+    var shouldBubbleActualDurations = completedWork.alternate === null || completedWork.child !== completedWork.alternate.child;
+    var child = completedWork.child;
+
+    while (child !== null) {
+      var childUpdateExpirationTime = child.expirationTime;
+      var childChildExpirationTime = child.childExpirationTime;
+
+      if (childUpdateExpirationTime > newChildExpirationTime) {
+        newChildExpirationTime = childUpdateExpirationTime;
+      }
+
+      if (childChildExpirationTime > newChildExpirationTime) {
+        newChildExpirationTime = childChildExpirationTime;
+      }
+
+      if (shouldBubbleActualDurations) {
+        actualDuration += child.actualDuration;
+      }
+
+      treeBaseDuration += child.treeBaseDuration;
+      child = child.sibling;
+    }
+
+    completedWork.actualDuration = actualDuration;
+    completedWork.treeBaseDuration = treeBaseDuration;
+  } else {
+    var _child = completedWork.child;
+
+    while (_child !== null) {
+      var _childUpdateExpirationTime = _child.expirationTime;
+      var _childChildExpirationTime = _child.childExpirationTime;
+
+      if (_childUpdateExpirationTime > newChildExpirationTime) {
+        newChildExpirationTime = _childUpdateExpirationTime;
+      }
+
+      if (_childChildExpirationTime > newChildExpirationTime) {
+        newChildExpirationTime = _childChildExpirationTime;
+      }
+
+      _child = _child.sibling;
+    }
+  }
+
+  completedWork.childExpirationTime = newChildExpirationTime;
+}
+
+function commitRoot(root) {
+  var renderPriorityLevel = getCurrentPriorityLevel();
+  runWithPriority$1(ImmediatePriority, commitRootImpl.bind(null, root, renderPriorityLevel));
+  return null;
+}
+
+function commitRootImpl(root, renderPriorityLevel) {
+  do {
+    // `flushPassiveEffects` will call `flushSyncUpdateQueue` at the end, which
+    // means `flushPassiveEffects` will sometimes result in additional
+    // passive effects. So we need to keep flushing in a loop until there are
+    // no more pending effects.
+    // TODO: Might be better if `flushPassiveEffects` did not automatically
+    // flush synchronous work at the end, to avoid factoring hazards like this.
+    flushPassiveEffects();
+  } while (rootWithPendingPassiveEffects !== null);
+
+  flushRenderPhaseStrictModeWarningsInDEV();
+
+  if (!((executionContext & (RenderContext | CommitContext)) === NoContext)) {
+    {
+      throw Error( "Should not already be working." );
+    }
+  }
+
+  var finishedWork = root.finishedWork;
+  var expirationTime = root.finishedExpirationTime;
+
+  if (finishedWork === null) {
+    return null;
+  }
+
+  root.finishedWork = null;
+  root.finishedExpirationTime = NoWork;
+
+  if (!(finishedWork !== root.current)) {
+    {
+      throw Error( "Cannot commit the same tree as before. This error is likely caused by a bug in React. Please file an issue." );
+    }
+  } // commitRoot never returns a continuation; it always finishes synchronously.
+  // So we can clear these now to allow a new callback to be scheduled.
+
+
+  root.callbackNode = null;
+  root.callbackExpirationTime = NoWork;
+  root.callbackPriority = NoPriority;
+  root.nextKnownPendingLevel = NoWork;
+  startCommitTimer(); // Update the first and last pending times on this root. The new first
+  // pending time is whatever is left on the root fiber.
+
+  var remainingExpirationTimeBeforeCommit = getRemainingExpirationTime(finishedWork);
+  markRootFinishedAtTime(root, expirationTime, remainingExpirationTimeBeforeCommit);
+
+  if (root === workInProgressRoot) {
+    // We can reset these now that they are finished.
+    workInProgressRoot = null;
+    workInProgress = null;
+    renderExpirationTime$1 = NoWork;
+  } // This indicates that the last root we worked on is not the same one that
+  // we're committing now. This most commonly happens when a suspended root
+  // times out.
+  // Get the list of effects.
+
+
+  var firstEffect;
+
+  if (finishedWork.effectTag > PerformedWork) {
+    // A fiber's effect list consists only of its children, not itself. So if
+    // the root has an effect, we need to add it to the end of the list. The
+    // resulting list is the set that would belong to the root's parent, if it
+    // had one; that is, all the effects in the tree including the root.
+    if (finishedWork.lastEffect !== null) {
+      finishedWork.lastEffect.nextEffect = finishedWork;
+      firstEffect = finishedWork.firstEffect;
+    } else {
+      firstEffect = finishedWork;
+    }
+  } else {
+    // There is no effect on the root.
+    firstEffect = finishedWork.firstEffect;
+  }
+
+  if (firstEffect !== null) {
+    var prevExecutionContext = executionContext;
+    executionContext |= CommitContext;
+    var prevInteractions = pushInteractions(root); // Reset this to null before calling lifecycles
+
+    ReactCurrentOwner$2.current = null; // The commit phase is broken into several sub-phases. We do a separate pass
+    // of the effect list for each phase: all mutation effects come before all
+    // layout effects, and so on.
+    // The first phase a "before mutation" phase. We use this phase to read the
+    // state of the host tree right before we mutate it. This is where
+    // getSnapshotBeforeUpdate is called.
+
+    startCommitSnapshotEffectsTimer();
+    prepareForCommit(root.containerInfo);
+    nextEffect = firstEffect;
+
+    do {
+      {
+        invokeGuardedCallback(null, commitBeforeMutationEffects, null);
+
+        if (hasCaughtError()) {
+          if (!(nextEffect !== null)) {
+            {
+              throw Error( "Should be working on an effect." );
+            }
+          }
+
+          var error = clearCaughtError();
+          captureCommitPhaseError(nextEffect, error);
+          nextEffect = nextEffect.nextEffect;
+        }
+      }
+    } while (nextEffect !== null);
+
+    stopCommitSnapshotEffectsTimer();
+
+    {
+      // Mark the current commit time to be shared by all Profilers in this
+      // batch. This enables them to be grouped later.
+      recordCommitTime();
+    } // The next phase is the mutation phase, where we mutate the host tree.
+
+
+    startCommitHostEffectsTimer();
+    nextEffect = firstEffect;
+
+    do {
+      {
+        invokeGuardedCallback(null, commitMutationEffects, null, root, renderPriorityLevel);
+
+        if (hasCaughtError()) {
+          if (!(nextEffect !== null)) {
+            {
+              throw Error( "Should be working on an effect." );
+            }
+          }
+
+          var _error = clearCaughtError();
+
+          captureCommitPhaseError(nextEffect, _error);
+          nextEffect = nextEffect.nextEffect;
+        }
+      }
+    } while (nextEffect !== null);
+
+    stopCommitHostEffectsTimer();
+    resetAfterCommit(root.containerInfo); // The work-in-progress tree is now the current tree. This must come after
+    // the mutation phase, so that the previous tree is still current during
+    // componentWillUnmount, but before the layout phase, so that the finished
+    // work is current during componentDidMount/Update.
+
+    root.current = finishedWork; // The next phase is the layout phase, where we call effects that read
+    // the host tree after it's been mutated. The idiomatic use case for this is
+    // layout, but class component lifecycles also fire here for legacy reasons.
+
+    startCommitLifeCyclesTimer();
+    nextEffect = firstEffect;
+
+    do {
+      {
+        invokeGuardedCallback(null, commitLayoutEffects, null, root, expirationTime);
+
+        if (hasCaughtError()) {
+          if (!(nextEffect !== null)) {
+            {
+              throw Error( "Should be working on an effect." );
+            }
+          }
+
+          var _error2 = clearCaughtError();
+
+          captureCommitPhaseError(nextEffect, _error2);
+          nextEffect = nextEffect.nextEffect;
+        }
+      }
+    } while (nextEffect !== null);
+
+    stopCommitLifeCyclesTimer();
+    nextEffect = null; // Tell Scheduler to yield at the end of the frame, so the browser has an
+    // opportunity to paint.
+
+    requestPaint();
+
+    {
+      popInteractions(prevInteractions);
+    }
+
+    executionContext = prevExecutionContext;
+  } else {
+    // No effects.
+    root.current = finishedWork; // Measure these anyway so the flamegraph explicitly shows that there were
+    // no effects.
+    // TODO: Maybe there's a better way to report this.
+
+    startCommitSnapshotEffectsTimer();
+    stopCommitSnapshotEffectsTimer();
+
+    {
+      recordCommitTime();
+    }
+
+    startCommitHostEffectsTimer();
+    stopCommitHostEffectsTimer();
+    startCommitLifeCyclesTimer();
+    stopCommitLifeCyclesTimer();
+  }
+
+  stopCommitTimer();
+  var rootDidHavePassiveEffects = rootDoesHavePassiveEffects;
+
+  if (rootDoesHavePassiveEffects) {
+    // This commit has passive effects. Stash a reference to them. But don't
+    // schedule a callback until after flushing layout work.
+    rootDoesHavePassiveEffects = false;
+    rootWithPendingPassiveEffects = root;
+    pendingPassiveEffectsExpirationTime = expirationTime;
+    pendingPassiveEffectsRenderPriority = renderPriorityLevel;
+  } else {
+    // We are done with the effect chain at this point so let's clear the
+    // nextEffect pointers to assist with GC. If we have passive effects, we'll
+    // clear this in flushPassiveEffects.
+    nextEffect = firstEffect;
+
+    while (nextEffect !== null) {
+      var nextNextEffect = nextEffect.nextEffect;
+      nextEffect.nextEffect = null;
+      nextEffect = nextNextEffect;
+    }
+  } // Check if there's remaining work on this root
+
+
+  var remainingExpirationTime = root.firstPendingTime;
+
+  if (remainingExpirationTime !== NoWork) {
+    {
+      if (spawnedWorkDuringRender !== null) {
+        var expirationTimes = spawnedWorkDuringRender;
+        spawnedWorkDuringRender = null;
+
+        for (var i = 0; i < expirationTimes.length; i++) {
+          scheduleInteractions(root, expirationTimes[i], root.memoizedInteractions);
+        }
+      }
+
+      schedulePendingInteractions(root, remainingExpirationTime);
+    }
+  } else {
+    // If there's no remaining work, we can clear the set of already failed
+    // error boundaries.
+    legacyErrorBoundariesThatAlreadyFailed = null;
+  }
+
+  {
+    if (!rootDidHavePassiveEffects) {
+      // If there are no passive effects, then we can complete the pending interactions.
+      // Otherwise, we'll wait until after the passive effects are flushed.
+      // Wait to do this until after remaining work has been scheduled,
+      // so that we don't prematurely signal complete for interactions when there's e.g. hidden work.
+      finishPendingInteractions(root, expirationTime);
+    }
+  }
+
+  if (remainingExpirationTime === Sync) {
+    // Count the number of times the root synchronously re-renders without
+    // finishing. If there are too many, it indicates an infinite update loop.
+    if (root === rootWithNestedUpdates) {
+      nestedUpdateCount++;
+    } else {
+      nestedUpdateCount = 0;
+      rootWithNestedUpdates = root;
+    }
+  } else {
+    nestedUpdateCount = 0;
+  }
+
+  onCommitRoot(finishedWork.stateNode, expirationTime); // Always call this before exiting `commitRoot`, to ensure that any
+  // additional work on this root is scheduled.
+
+  ensureRootIsScheduled(root);
+
+  if (hasUncaughtError) {
+    hasUncaughtError = false;
+    var _error3 = firstUncaughtError;
+    firstUncaughtError = null;
+    throw _error3;
+  }
+
+  if ((executionContext & LegacyUnbatchedContext) !== NoContext) {
+    // This is a legacy edge case. We just committed the initial mount of
+    // a ReactDOM.render-ed root inside of batchedUpdates. The commit fired
+    // synchronously, but layout updates should be deferred until the end
+    // of the batch.
+    return null;
+  } // If layout work was scheduled, flush it now.
+
+
+  flushSyncCallbackQueue();
+  return null;
+}
+
+function commitBeforeMutationEffects() {
+  while (nextEffect !== null) {
+    var effectTag = nextEffect.effectTag;
+
+    if ((effectTag & Snapshot) !== NoEffect) {
+      setCurrentFiber(nextEffect);
+      recordEffect();
+      var current = nextEffect.alternate;
+      commitBeforeMutationLifeCycles(current, nextEffect);
+      resetCurrentFiber();
+    }
+
+    if ((effectTag & Passive) !== NoEffect) {
+      // If there are passive effects, schedule a callback to flush at
+      // the earliest opportunity.
+      if (!rootDoesHavePassiveEffects) {
+        rootDoesHavePassiveEffects = true;
+        scheduleCallback(NormalPriority, function () {
+          flushPassiveEffects();
+          return null;
+        });
+      }
+    }
+
+    nextEffect = nextEffect.nextEffect;
+  }
+}
+
+function commitMutationEffects(root, renderPriorityLevel) {
+  // TODO: Should probably move the bulk of this function to commitWork.
+  while (nextEffect !== null) {
+    setCurrentFiber(nextEffect);
+    var effectTag = nextEffect.effectTag;
+
+    if (effectTag & ContentReset) {
+      commitResetTextContent(nextEffect);
+    }
+
+    if (effectTag & Ref) {
+      var current = nextEffect.alternate;
+
+      if (current !== null) {
+        commitDetachRef(current);
+      }
+    } // The following switch statement is only concerned about placement,
+    // updates, and deletions. To avoid needing to add a case for every possible
+    // bitmap value, we remove the secondary effects from the effect tag and
+    // switch on that value.
+
+
+    var primaryEffectTag = effectTag & (Placement | Update | Deletion | Hydrating);
+
+    switch (primaryEffectTag) {
+      case Placement:
+        {
+          commitPlacement(nextEffect); // Clear the "placement" from effect tag so that we know that this is
+          // inserted, before any life-cycles like componentDidMount gets called.
+          // TODO: findDOMNode doesn't rely on this any more but isMounted does
+          // and isMounted is deprecated anyway so we should be able to kill this.
+
+          nextEffect.effectTag &= ~Placement;
+          break;
+        }
+
+      case PlacementAndUpdate:
+        {
+          // Placement
+          commitPlacement(nextEffect); // Clear the "placement" from effect tag so that we know that this is
+          // inserted, before any life-cycles like componentDidMount gets called.
+
+          nextEffect.effectTag &= ~Placement; // Update
+
+          var _current = nextEffect.alternate;
+          commitWork(_current, nextEffect);
+          break;
+        }
+
+      case Hydrating:
+        {
+          nextEffect.effectTag &= ~Hydrating;
+          break;
+        }
+
+      case HydratingAndUpdate:
+        {
+          nextEffect.effectTag &= ~Hydrating; // Update
+
+          var _current2 = nextEffect.alternate;
+          commitWork(_current2, nextEffect);
+          break;
+        }
+
+      case Update:
+        {
+          var _current3 = nextEffect.alternate;
+          commitWork(_current3, nextEffect);
+          break;
+        }
+
+      case Deletion:
+        {
+          commitDeletion(root, nextEffect, renderPriorityLevel);
+          break;
+        }
+    } // TODO: Only record a mutation effect if primaryEffectTag is non-zero.
+
+
+    recordEffect();
+    resetCurrentFiber();
+    nextEffect = nextEffect.nextEffect;
+  }
+}
+
+function commitLayoutEffects(root, committedExpirationTime) {
+  // TODO: Should probably move the bulk of this function to commitWork.
+  while (nextEffect !== null) {
+    setCurrentFiber(nextEffect);
+    var effectTag = nextEffect.effectTag;
+
+    if (effectTag & (Update | Callback)) {
+      recordEffect();
+      var current = nextEffect.alternate;
+      commitLifeCycles(root, current, nextEffect);
+    }
+
+    if (effectTag & Ref) {
+      recordEffect();
+      commitAttachRef(nextEffect);
+    }
+
+    resetCurrentFiber();
+    nextEffect = nextEffect.nextEffect;
+  }
+}
+
+function flushPassiveEffects() {
+  if (pendingPassiveEffectsRenderPriority !== NoPriority) {
+    var priorityLevel = pendingPassiveEffectsRenderPriority > NormalPriority ? NormalPriority : pendingPassiveEffectsRenderPriority;
+    pendingPassiveEffectsRenderPriority = NoPriority;
+    return runWithPriority$1(priorityLevel, flushPassiveEffectsImpl);
+  }
+}
+
+function flushPassiveEffectsImpl() {
+  if (rootWithPendingPassiveEffects === null) {
+    return false;
+  }
+
+  var root = rootWithPendingPassiveEffects;
+  var expirationTime = pendingPassiveEffectsExpirationTime;
+  rootWithPendingPassiveEffects = null;
+  pendingPassiveEffectsExpirationTime = NoWork;
+
+  if (!((executionContext & (RenderContext | CommitContext)) === NoContext)) {
+    {
+      throw Error( "Cannot flush passive effects while already rendering." );
+    }
+  }
+
+  var prevExecutionContext = executionContext;
+  executionContext |= CommitContext;
+  var prevInteractions = pushInteractions(root);
+
+  {
+    // Note: This currently assumes there are no passive effects on the root fiber
+    // because the root is not part of its own effect list.
+    // This could change in the future.
+    var _effect2 = root.current.firstEffect;
+
+    while (_effect2 !== null) {
+      {
+        setCurrentFiber(_effect2);
+        invokeGuardedCallback(null, commitPassiveHookEffects, null, _effect2);
+
+        if (hasCaughtError()) {
+          if (!(_effect2 !== null)) {
+            {
+              throw Error( "Should be working on an effect." );
+            }
+          }
+
+          var _error5 = clearCaughtError();
+
+          captureCommitPhaseError(_effect2, _error5);
+        }
+
+        resetCurrentFiber();
+      }
+
+      var nextNextEffect = _effect2.nextEffect; // Remove nextEffect pointer to assist GC
+
+      _effect2.nextEffect = null;
+      _effect2 = nextNextEffect;
+    }
+  }
+
+  {
+    popInteractions(prevInteractions);
+    finishPendingInteractions(root, expirationTime);
+  }
+
+  executionContext = prevExecutionContext;
+  flushSyncCallbackQueue(); // If additional passive effects were scheduled, increment a counter. If this
+  // exceeds the limit, we'll fire a warning.
+
+  nestedPassiveUpdateCount = rootWithPendingPassiveEffects === null ? 0 : nestedPassiveUpdateCount + 1;
+  return true;
+}
+
+function isAlreadyFailedLegacyErrorBoundary(instance) {
+  return legacyErrorBoundariesThatAlreadyFailed !== null && legacyErrorBoundariesThatAlreadyFailed.has(instance);
+}
+function markLegacyErrorBoundaryAsFailed(instance) {
+  if (legacyErrorBoundariesThatAlreadyFailed === null) {
+    legacyErrorBoundariesThatAlreadyFailed = new Set([instance]);
+  } else {
+    legacyErrorBoundariesThatAlreadyFailed.add(instance);
+  }
+}
+
+function prepareToThrowUncaughtError(error) {
+  if (!hasUncaughtError) {
+    hasUncaughtError = true;
+    firstUncaughtError = error;
+  }
+}
+
+var onUncaughtError = prepareToThrowUncaughtError;
+
+function captureCommitPhaseErrorOnRoot(rootFiber, sourceFiber, error) {
+  var errorInfo = createCapturedValue(error, sourceFiber);
+  var update = createRootErrorUpdate(rootFiber, errorInfo, Sync);
+  enqueueUpdate(rootFiber, update);
+  var root = markUpdateTimeFromFiberToRoot(rootFiber, Sync);
+
+  if (root !== null) {
+    ensureRootIsScheduled(root);
+    schedulePendingInteractions(root, Sync);
+  }
+}
+
+function captureCommitPhaseError(sourceFiber, error) {
+  if (sourceFiber.tag === HostRoot) {
+    // Error was thrown at the root. There is no parent, so the root
+    // itself should capture it.
+    captureCommitPhaseErrorOnRoot(sourceFiber, sourceFiber, error);
+    return;
+  }
+
+  var fiber = sourceFiber.return;
+
+  while (fiber !== null) {
+    if (fiber.tag === HostRoot) {
+      captureCommitPhaseErrorOnRoot(fiber, sourceFiber, error);
+      return;
+    } else if (fiber.tag === ClassComponent) {
+      var ctor = fiber.type;
+      var instance = fiber.stateNode;
+
+      if (typeof ctor.getDerivedStateFromError === 'function' || typeof instance.componentDidCatch === 'function' && !isAlreadyFailedLegacyErrorBoundary(instance)) {
+        var errorInfo = createCapturedValue(error, sourceFiber);
+        var update = createClassErrorUpdate(fiber, errorInfo, // TODO: This is always sync
+        Sync);
+        enqueueUpdate(fiber, update);
+        var root = markUpdateTimeFromFiberToRoot(fiber, Sync);
+
+        if (root !== null) {
+          ensureRootIsScheduled(root);
+          schedulePendingInteractions(root, Sync);
+        }
+
+        return;
+      }
+    }
+
+    fiber = fiber.return;
+  }
+}
+function pingSuspendedRoot(root, thenable, suspendedTime) {
+  var pingCache = root.pingCache;
+
+  if (pingCache !== null) {
+    // The thenable resolved, so we no longer need to memoize, because it will
+    // never be thrown again.
+    pingCache.delete(thenable);
+  }
+
+  if (workInProgressRoot === root && renderExpirationTime$1 === suspendedTime) {
+    // Received a ping at the same priority level at which we're currently
+    // rendering. We might want to restart this render. This should mirror
+    // the logic of whether or not a root suspends once it completes.
+    // TODO: If we're rendering sync either due to Sync, Batched or expired,
+    // we should probably never restart.
+    // If we're suspended with delay, we'll always suspend so we can always
+    // restart. If we're suspended without any updates, it might be a retry.
+    // If it's early in the retry we can restart. We can't know for sure
+    // whether we'll eventually process an update during this render pass,
+    // but it's somewhat unlikely that we get to a ping before that, since
+    // getting to the root most update is usually very fast.
+    if (workInProgressRootExitStatus === RootSuspendedWithDelay || workInProgressRootExitStatus === RootSuspended && workInProgressRootLatestProcessedExpirationTime === Sync && now() - globalMostRecentFallbackTime < FALLBACK_THROTTLE_MS) {
+      // Restart from the root. Don't need to schedule a ping because
+      // we're already working on this tree.
+      prepareFreshStack(root, renderExpirationTime$1);
+    } else {
+      // Even though we can't restart right now, we might get an
+      // opportunity later. So we mark this render as having a ping.
+      workInProgressRootHasPendingPing = true;
+    }
+
+    return;
+  }
+
+  if (!isRootSuspendedAtTime(root, suspendedTime)) {
+    // The root is no longer suspended at this time.
+    return;
+  }
+
+  var lastPingedTime = root.lastPingedTime;
+
+  if (lastPingedTime !== NoWork && lastPingedTime < suspendedTime) {
+    // There's already a lower priority ping scheduled.
+    return;
+  } // Mark the time at which this ping was scheduled.
+
+
+  root.lastPingedTime = suspendedTime;
+
+  ensureRootIsScheduled(root);
+  schedulePendingInteractions(root, suspendedTime);
+}
+
+function retryTimedOutBoundary(boundaryFiber, retryTime) {
+  // The boundary fiber (a Suspense component or SuspenseList component)
+  // previously was rendered in its fallback state. One of the promises that
+  // suspended it has resolved, which means at least part of the tree was
+  // likely unblocked. Try rendering again, at a new expiration time.
+  if (retryTime === NoWork) {
+    var suspenseConfig = null; // Retries don't carry over the already committed update.
+
+    var currentTime = requestCurrentTimeForUpdate();
+    retryTime = computeExpirationForFiber(currentTime, boundaryFiber, suspenseConfig);
+  } // TODO: Special case idle priority?
+
+
+  var root = markUpdateTimeFromFiberToRoot(boundaryFiber, retryTime);
+
+  if (root !== null) {
+    ensureRootIsScheduled(root);
+    schedulePendingInteractions(root, retryTime);
+  }
+}
+function resolveRetryThenable(boundaryFiber, thenable) {
+  var retryTime = NoWork; // Default
+
+  var retryCache;
+
+  {
+    retryCache = boundaryFiber.stateNode;
+  }
+
+  if (retryCache !== null) {
+    // The thenable resolved, so we no longer need to memoize, because it will
+    // never be thrown again.
+    retryCache.delete(thenable);
+  }
+
+  retryTimedOutBoundary(boundaryFiber, retryTime);
+} // Computes the next Just Noticeable Difference (JND) boundary.
+// The theory is that a person can't tell the difference between small differences in time.
+// Therefore, if we wait a bit longer than necessary that won't translate to a noticeable
+// difference in the experience. However, waiting for longer might mean that we can avoid
+// showing an intermediate loading state. The longer we have already waited, the harder it
+// is to tell small differences in time. Therefore, the longer we've already waited,
+// the longer we can wait additionally. At some point we have to give up though.
+// We pick a train model where the next boundary commits at a consistent schedule.
+// These particular numbers are vague estimates. We expect to adjust them based on research.
+
+function jnd(timeElapsed) {
+  return timeElapsed < 120 ? 120 : timeElapsed < 480 ? 480 : timeElapsed < 1080 ? 1080 : timeElapsed < 1920 ? 1920 : timeElapsed < 3000 ? 3000 : timeElapsed < 4320 ? 4320 : ceil(timeElapsed / 1960) * 1960;
+}
+
+function computeMsUntilSuspenseLoadingDelay(mostRecentEventTime, committedExpirationTime, suspenseConfig) {
+  var busyMinDurationMs = suspenseConfig.busyMinDurationMs | 0;
+
+  if (busyMinDurationMs <= 0) {
+    return 0;
+  }
+
+  var busyDelayMs = suspenseConfig.busyDelayMs | 0; // Compute the time until this render pass would expire.
+
+  var currentTimeMs = now();
+  var eventTimeMs = inferTimeFromExpirationTimeWithSuspenseConfig(mostRecentEventTime, suspenseConfig);
+  var timeElapsed = currentTimeMs - eventTimeMs;
+
+  if (timeElapsed <= busyDelayMs) {
+    // If we haven't yet waited longer than the initial delay, we don't
+    // have to wait any additional time.
+    return 0;
+  }
+
+  var msUntilTimeout = busyDelayMs + busyMinDurationMs - timeElapsed; // This is the value that is passed to `setTimeout`.
+
+  return msUntilTimeout;
+}
+
+function checkForNestedUpdates() {
+  if (nestedUpdateCount > NESTED_UPDATE_LIMIT) {
+    nestedUpdateCount = 0;
+    rootWithNestedUpdates = null;
+
+    {
+      {
+        throw Error( "Maximum update depth exceeded. This can happen when a component repeatedly calls setState inside componentWillUpdate or componentDidUpdate. React limits the number of nested updates to prevent infinite loops." );
+      }
+    }
+  }
+
+  {
+    if (nestedPassiveUpdateCount > NESTED_PASSIVE_UPDATE_LIMIT) {
+      nestedPassiveUpdateCount = 0;
+
+      error('Maximum update depth exceeded. This can happen when a component ' + "calls setState inside useEffect, but useEffect either doesn't " + 'have a dependency array, or one of the dependencies changes on ' + 'every render.');
+    }
+  }
+}
+
+function flushRenderPhaseStrictModeWarningsInDEV() {
+  {
+    ReactStrictModeWarnings.flushLegacyContextWarning();
+
+    {
+      ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings();
+    }
+  }
+}
+
+function stopFinishedWorkLoopTimer() {
+  var didCompleteRoot = true;
+  stopWorkLoopTimer(interruptedBy, didCompleteRoot);
+  interruptedBy = null;
+}
+
+function stopInterruptedWorkLoopTimer() {
+  // TODO: Track which fiber caused the interruption.
+  var didCompleteRoot = false;
+  stopWorkLoopTimer(interruptedBy, didCompleteRoot);
+  interruptedBy = null;
+}
+
+function checkForInterruption(fiberThatReceivedUpdate, updateExpirationTime) {
+  if ( workInProgressRoot !== null && updateExpirationTime > renderExpirationTime$1) {
+    interruptedBy = fiberThatReceivedUpdate;
+  }
+}
+
+var didWarnStateUpdateForUnmountedComponent = null;
+
+function warnAboutUpdateOnUnmountedFiberInDEV(fiber) {
+  {
+    var tag = fiber.tag;
+
+    if (tag !== HostRoot && tag !== ClassComponent && tag !== FunctionComponent && tag !== ForwardRef && tag !== MemoComponent && tag !== SimpleMemoComponent && tag !== Block) {
+      // Only warn for user-defined components, not internal ones like Suspense.
+      return;
+    }
+    // the problematic code almost always lies inside that component.
+
+
+    var componentName = getComponentName(fiber.type) || 'ReactComponent';
+
+    if (didWarnStateUpdateForUnmountedComponent !== null) {
+      if (didWarnStateUpdateForUnmountedComponent.has(componentName)) {
+        return;
+      }
+
+      didWarnStateUpdateForUnmountedComponent.add(componentName);
+    } else {
+      didWarnStateUpdateForUnmountedComponent = new Set([componentName]);
+    }
+
+    error("Can't perform a React state update on an unmounted component. This " + 'is a no-op, but it indicates a memory leak in your application. To ' + 'fix, cancel all subscriptions and asynchronous tasks in %s.%s', tag === ClassComponent ? 'the componentWillUnmount method' : 'a useEffect cleanup function', getStackByFiberInDevAndProd(fiber));
+  }
+}
+
+var beginWork$1;
+
+{
+  var dummyFiber = null;
+
+  beginWork$1 = function (current, unitOfWork, expirationTime) {
+    // If a component throws an error, we replay it again in a synchronously
+    // dispatched event, so that the debugger will treat it as an uncaught
+    // error See ReactErrorUtils for more information.
+    // Before entering the begin phase, copy the work-in-progress onto a dummy
+    // fiber. If beginWork throws, we'll use this to reset the state.
+    var originalWorkInProgressCopy = assignFiberPropertiesInDEV(dummyFiber, unitOfWork);
+
+    try {
+      return beginWork(current, unitOfWork, expirationTime);
+    } catch (originalError) {
+      if (originalError !== null && typeof originalError === 'object' && typeof originalError.then === 'function') {
+        // Don't replay promises. Treat everything else like an error.
+        throw originalError;
+      } // Keep this code in sync with handleError; any changes here must have
+      // corresponding changes there.
+
+
+      resetContextDependencies();
+      resetHooksAfterThrow(); // Don't reset current debug fiber, since we're about to work on the
+      // same fiber again.
+      // Unwind the failed stack frame
+
+      unwindInterruptedWork(unitOfWork); // Restore the original properties of the fiber.
+
+      assignFiberPropertiesInDEV(unitOfWork, originalWorkInProgressCopy);
+
+      if ( unitOfWork.mode & ProfileMode) {
+        // Reset the profiler timer.
+        startProfilerTimer(unitOfWork);
+      } // Run beginWork again.
+
+
+      invokeGuardedCallback(null, beginWork, null, current, unitOfWork, expirationTime);
+
+      if (hasCaughtError()) {
+        var replayError = clearCaughtError(); // `invokeGuardedCallback` sometimes sets an expando `_suppressLogging`.
+        // Rethrow this error instead of the original one.
+
+        throw replayError;
+      } else {
+        // This branch is reachable if the render phase is impure.
+        throw originalError;
+      }
+    }
+  };
+}
+
+var didWarnAboutUpdateInRender = false;
+var didWarnAboutUpdateInRenderForAnotherComponent;
+
+{
+  didWarnAboutUpdateInRenderForAnotherComponent = new Set();
+}
+
+function warnAboutRenderPhaseUpdatesInDEV(fiber) {
+  {
+    if (isRendering && (executionContext & RenderContext) !== NoContext) {
+      switch (fiber.tag) {
+        case FunctionComponent:
+        case ForwardRef:
+        case SimpleMemoComponent:
+          {
+            var renderingComponentName = workInProgress && getComponentName(workInProgress.type) || 'Unknown'; // Dedupe by the rendering component because it's the one that needs to be fixed.
+
+            var dedupeKey = renderingComponentName;
+
+            if (!didWarnAboutUpdateInRenderForAnotherComponent.has(dedupeKey)) {
+              didWarnAboutUpdateInRenderForAnotherComponent.add(dedupeKey);
+              var setStateComponentName = getComponentName(fiber.type) || 'Unknown';
+
+              error('Cannot update a component (`%s`) while rendering a ' + 'different component (`%s`). To locate the bad setState() call inside `%s`, ' + 'follow the stack trace as described in https://fb.me/setstate-in-render', setStateComponentName, renderingComponentName, renderingComponentName);
+            }
+
+            break;
+          }
+
+        case ClassComponent:
+          {
+            if (!didWarnAboutUpdateInRender) {
+              error('Cannot update during an existing state transition (such as ' + 'within `render`). Render methods should be a pure ' + 'function of props and state.');
+
+              didWarnAboutUpdateInRender = true;
+            }
+
+            break;
+          }
+      }
+    }
+  }
+} // a 'shared' variable that changes when act() opens/closes in tests.
+
+
+var IsThisRendererActing = {
+  current: false
+};
+function warnIfNotScopedWithMatchingAct(fiber) {
+  {
+    if ( IsSomeRendererActing.current === true && IsThisRendererActing.current !== true) {
+      error("It looks like you're using the wrong act() around your test interactions.\n" + 'Be sure to use the matching version of act() corresponding to your renderer:\n\n' + '// for react-dom:\n' + "import {act} from 'react-dom/test-utils';\n" + '// ...\n' + 'act(() => ...);\n\n' + '// for react-test-renderer:\n' + "import TestRenderer from 'react-test-renderer';\n" + 'const {act} = TestRenderer;\n' + '// ...\n' + 'act(() => ...);' + '%s', getStackByFiberInDevAndProd(fiber));
+    }
+  }
+}
+function warnIfNotCurrentlyActingEffectsInDEV(fiber) {
+  {
+    if ( (fiber.mode & StrictMode) !== NoMode && IsSomeRendererActing.current === false && IsThisRendererActing.current === false) {
+      error('An update to %s ran an effect, but was not wrapped in act(...).\n\n' + 'When testing, code that causes React state updates should be ' + 'wrapped into act(...):\n\n' + 'act(() => {\n' + '  /* fire events that update state */\n' + '});\n' + '/* assert on the output */\n\n' + "This ensures that you're testing the behavior the user would see " + 'in the browser.' + ' Learn more at https://fb.me/react-wrap-tests-with-act' + '%s', getComponentName(fiber.type), getStackByFiberInDevAndProd(fiber));
+    }
+  }
+}
+
+function warnIfNotCurrentlyActingUpdatesInDEV(fiber) {
+  {
+    if ( executionContext === NoContext && IsSomeRendererActing.current === false && IsThisRendererActing.current === false) {
+      error('An update to %s inside a test was not wrapped in act(...).\n\n' + 'When testing, code that causes React state updates should be ' + 'wrapped into act(...):\n\n' + 'act(() => {\n' + '  /* fire events that update state */\n' + '});\n' + '/* assert on the output */\n\n' + "This ensures that you're testing the behavior the user would see " + 'in the browser.' + ' Learn more at https://fb.me/react-wrap-tests-with-act' + '%s', getComponentName(fiber.type), getStackByFiberInDevAndProd(fiber));
+    }
+  }
+}
+
+var warnIfNotCurrentlyActingUpdatesInDev = warnIfNotCurrentlyActingUpdatesInDEV; // In tests, we want to enforce a mocked scheduler.
+
+var didWarnAboutUnmockedScheduler = false; // TODO Before we release concurrent mode, revisit this and decide whether a mocked
+// scheduler is the actual recommendation. The alternative could be a testing build,
+// a new lib, or whatever; we dunno just yet. This message is for early adopters
+// to get their tests right.
+
+function warnIfUnmockedScheduler(fiber) {
+  {
+    if (didWarnAboutUnmockedScheduler === false && Scheduler.unstable_flushAllWithoutAsserting === undefined) {
+      if (fiber.mode & BlockingMode || fiber.mode & ConcurrentMode) {
+        didWarnAboutUnmockedScheduler = true;
+
+        error('In Concurrent or Sync modes, the "scheduler" module needs to be mocked ' + 'to guarantee consistent behaviour across tests and browsers. ' + 'For example, with jest: \n' + "jest.mock('scheduler', () => require('scheduler/unstable_mock'));\n\n" + 'For more info, visit https://fb.me/react-mock-scheduler');
+      }
+    }
+  }
+}
+
+function computeThreadID(root, expirationTime) {
+  // Interaction threads are unique per root and expiration time.
+  return expirationTime * 1000 + root.interactionThreadID;
+}
+
+function markSpawnedWork(expirationTime) {
+
+  if (spawnedWorkDuringRender === null) {
+    spawnedWorkDuringRender = [expirationTime];
+  } else {
+    spawnedWorkDuringRender.push(expirationTime);
+  }
+}
+
+function scheduleInteractions(root, expirationTime, interactions) {
+
+  if (interactions.size > 0) {
+    var pendingInteractionMap = root.pendingInteractionMap;
+    var pendingInteractions = pendingInteractionMap.get(expirationTime);
+
+    if (pendingInteractions != null) {
+      interactions.forEach(function (interaction) {
+        if (!pendingInteractions.has(interaction)) {
+          // Update the pending async work count for previously unscheduled interaction.
+          interaction.__count++;
+        }
+
+        pendingInteractions.add(interaction);
+      });
+    } else {
+      pendingInteractionMap.set(expirationTime, new Set(interactions)); // Update the pending async work count for the current interactions.
+
+      interactions.forEach(function (interaction) {
+        interaction.__count++;
+      });
+    }
+
+    var subscriber = tracing.__subscriberRef.current;
+
+    if (subscriber !== null) {
+      var threadID = computeThreadID(root, expirationTime);
+      subscriber.onWorkScheduled(interactions, threadID);
+    }
+  }
+}
+
+function schedulePendingInteractions(root, expirationTime) {
+
+  scheduleInteractions(root, expirationTime, tracing.__interactionsRef.current);
+}
+
+function startWorkOnPendingInteractions(root, expirationTime) {
+  // we can accurately attribute time spent working on it, And so that cascading
+  // work triggered during the render phase will be associated with it.
+
+
+  var interactions = new Set();
+  root.pendingInteractionMap.forEach(function (scheduledInteractions, scheduledExpirationTime) {
+    if (scheduledExpirationTime >= expirationTime) {
+      scheduledInteractions.forEach(function (interaction) {
+        return interactions.add(interaction);
+      });
+    }
+  }); // Store the current set of interactions on the FiberRoot for a few reasons:
+  // We can re-use it in hot functions like performConcurrentWorkOnRoot()
+  // without having to recalculate it. We will also use it in commitWork() to
+  // pass to any Profiler onRender() hooks. This also provides DevTools with a
+  // way to access it when the onCommitRoot() hook is called.
+
+  root.memoizedInteractions = interactions;
+
+  if (interactions.size > 0) {
+    var subscriber = tracing.__subscriberRef.current;
+
+    if (subscriber !== null) {
+      var threadID = computeThreadID(root, expirationTime);
+
+      try {
+        subscriber.onWorkStarted(interactions, threadID);
+      } catch (error) {
+        // If the subscriber throws, rethrow it in a separate task
+        scheduleCallback(ImmediatePriority, function () {
+          throw error;
+        });
+      }
+    }
+  }
+}
+
+function finishPendingInteractions(root, committedExpirationTime) {
+
+  var earliestRemainingTimeAfterCommit = root.firstPendingTime;
+  var subscriber;
+
+  try {
+    subscriber = tracing.__subscriberRef.current;
+
+    if (subscriber !== null && root.memoizedInteractions.size > 0) {
+      var threadID = computeThreadID(root, committedExpirationTime);
+      subscriber.onWorkStopped(root.memoizedInteractions, threadID);
+    }
+  } catch (error) {
+    // If the subscriber throws, rethrow it in a separate task
+    scheduleCallback(ImmediatePriority, function () {
+      throw error;
+    });
+  } finally {
+    // Clear completed interactions from the pending Map.
+    // Unless the render was suspended or cascading work was scheduled,
+    // In which case– leave pending interactions until the subsequent render.
+    var pendingInteractionMap = root.pendingInteractionMap;
+    pendingInteractionMap.forEach(function (scheduledInteractions, scheduledExpirationTime) {
+      // Only decrement the pending interaction count if we're done.
+      // If there's still work at the current priority,
+      // That indicates that we are waiting for suspense data.
+      if (scheduledExpirationTime > earliestRemainingTimeAfterCommit) {
+        pendingInteractionMap.delete(scheduledExpirationTime);
+        scheduledInteractions.forEach(function (interaction) {
+          interaction.__count--;
+
+          if (subscriber !== null && interaction.__count === 0) {
+            try {
+              subscriber.onInteractionScheduledWorkCompleted(interaction);
+            } catch (error) {
+              // If the subscriber throws, rethrow it in a separate task
+              scheduleCallback(ImmediatePriority, function () {
+                throw error;
+              });
+            }
+          }
+        });
+      }
+    });
+  }
+}
+
+var onScheduleFiberRoot = null;
+var onCommitFiberRoot = null;
+var onCommitFiberUnmount = null;
+var hasLoggedError = false;
+var isDevToolsPresent = typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined';
+function injectInternals(internals) {
+  if (typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === 'undefined') {
+    // No DevTools
+    return false;
+  }
+
+  var hook = __REACT_DEVTOOLS_GLOBAL_HOOK__;
+
+  if (hook.isDisabled) {
+    // This isn't a real property on the hook, but it can be set to opt out
+    // of DevTools integration and associated warnings and logs.
+    // https://github.com/facebook/react/issues/3877
+    return true;
+  }
+
+  if (!hook.supportsFiber) {
+    {
+      error('The installed version of React DevTools is too old and will not work ' + 'with the current version of React. Please update React DevTools. ' + 'https://fb.me/react-devtools');
+    } // DevTools exists, even though it doesn't support Fiber.
+
+
+    return true;
+  }
+
+  try {
+    var rendererID = hook.inject(internals); // We have successfully injected, so now it is safe to set up hooks.
+
+    if (true) {
+      // Only used by Fast Refresh
+      if (typeof hook.onScheduleFiberRoot === 'function') {
+        onScheduleFiberRoot = function (root, children) {
+          try {
+            hook.onScheduleFiberRoot(rendererID, root, children);
+          } catch (err) {
+            if (true && !hasLoggedError) {
+              hasLoggedError = true;
+
+              error('React instrumentation encountered an error: %s', err);
+            }
+          }
+        };
+      }
+    }
+
+    onCommitFiberRoot = function (root, expirationTime) {
+      try {
+        var didError = (root.current.effectTag & DidCapture) === DidCapture;
+
+        if (enableProfilerTimer) {
+          var currentTime = getCurrentTime();
+          var priorityLevel = inferPriorityFromExpirationTime(currentTime, expirationTime);
+          hook.onCommitFiberRoot(rendererID, root, priorityLevel, didError);
+        } else {
+          hook.onCommitFiberRoot(rendererID, root, undefined, didError);
+        }
+      } catch (err) {
+        if (true) {
+          if (!hasLoggedError) {
+            hasLoggedError = true;
+
+            error('React instrumentation encountered an error: %s', err);
+          }
+        }
+      }
+    };
+
+    onCommitFiberUnmount = function (fiber) {
+      try {
+        hook.onCommitFiberUnmount(rendererID, fiber);
+      } catch (err) {
+        if (true) {
+          if (!hasLoggedError) {
+            hasLoggedError = true;
+
+            error('React instrumentation encountered an error: %s', err);
+          }
+        }
+      }
+    };
+  } catch (err) {
+    // Catch all errors because it is unsafe to throw during initialization.
+    {
+      error('React instrumentation encountered an error: %s.', err);
+    }
+  } // DevTools exists
+
+
+  return true;
+}
+function onScheduleRoot(root, children) {
+  if (typeof onScheduleFiberRoot === 'function') {
+    onScheduleFiberRoot(root, children);
+  }
+}
+function onCommitRoot(root, expirationTime) {
+  if (typeof onCommitFiberRoot === 'function') {
+    onCommitFiberRoot(root, expirationTime);
+  }
+}
+function onCommitUnmount(fiber) {
+  if (typeof onCommitFiberUnmount === 'function') {
+    onCommitFiberUnmount(fiber);
+  }
+}
+
+var hasBadMapPolyfill;
+
+{
+  hasBadMapPolyfill = false;
+
+  try {
+    var nonExtensibleObject = Object.preventExtensions({});
+    var testMap = new Map([[nonExtensibleObject, null]]);
+    var testSet = new Set([nonExtensibleObject]); // This is necessary for Rollup to not consider these unused.
+    // https://github.com/rollup/rollup/issues/1771
+    // TODO: we can remove these if Rollup fixes the bug.
+
+    testMap.set(0, 0);
+    testSet.add(0);
+  } catch (e) {
+    // TODO: Consider warning about bad polyfills
+    hasBadMapPolyfill = true;
+  }
+}
+
+var debugCounter = 1;
+
+function FiberNode(tag, pendingProps, key, mode) {
+  // Instance
+  this.tag = tag;
+  this.key = key;
+  this.elementType = null;
+  this.type = null;
+  this.stateNode = null; // Fiber
+
+  this.return = null;
+  this.child = null;
+  this.sibling = null;
+  this.index = 0;
+  this.ref = null;
+  this.pendingProps = pendingProps;
+  this.memoizedProps = null;
+  this.updateQueue = null;
+  this.memoizedState = null;
+  this.dependencies = null;
+  this.mode = mode; // Effects
+
+  this.effectTag = NoEffect;
+  this.nextEffect = null;
+  this.firstEffect = null;
+  this.lastEffect = null;
+  this.expirationTime = NoWork;
+  this.childExpirationTime = NoWork;
+  this.alternate = null;
+
+  {
+    // Note: The following is done to avoid a v8 performance cliff.
+    //
+    // Initializing the fields below to smis and later updating them with
+    // double values will cause Fibers to end up having separate shapes.
+    // This behavior/bug has something to do with Object.preventExtension().
+    // Fortunately this only impacts DEV builds.
+    // Unfortunately it makes React unusably slow for some applications.
+    // To work around this, initialize the fields below with doubles.
+    //
+    // Learn more about this here:
+    // https://github.com/facebook/react/issues/14365
+    // https://bugs.chromium.org/p/v8/issues/detail?id=8538
+    this.actualDuration = Number.NaN;
+    this.actualStartTime = Number.NaN;
+    this.selfBaseDuration = Number.NaN;
+    this.treeBaseDuration = Number.NaN; // It's okay to replace the initial doubles with smis after initialization.
+    // This won't trigger the performance cliff mentioned above,
+    // and it simplifies other profiler code (including DevTools).
+
+    this.actualDuration = 0;
+    this.actualStartTime = -1;
+    this.selfBaseDuration = 0;
+    this.treeBaseDuration = 0;
+  } // This is normally DEV-only except www when it adds listeners.
+  // TODO: remove the User Timing integration in favor of Root Events.
+
+
+  {
+    this._debugID = debugCounter++;
+    this._debugIsCurrentlyTiming = false;
+  }
+
+  {
+    this._debugSource = null;
+    this._debugOwner = null;
+    this._debugNeedsRemount = false;
+    this._debugHookTypes = null;
+
+    if (!hasBadMapPolyfill && typeof Object.preventExtensions === 'function') {
+      Object.preventExtensions(this);
+    }
+  }
+} // This is a constructor function, rather than a POJO constructor, still
+// please ensure we do the following:
+// 1) Nobody should add any instance methods on this. Instance methods can be
+//    more difficult to predict when they get optimized and they are almost
+//    never inlined properly in static compilers.
+// 2) Nobody should rely on `instanceof Fiber` for type testing. We should
+//    always know when it is a fiber.
+// 3) We might want to experiment with using numeric keys since they are easier
+//    to optimize in a non-JIT environment.
+// 4) We can easily go from a constructor to a createFiber object literal if that
+//    is faster.
+// 5) It should be easy to port this to a C struct and keep a C implementation
+//    compatible.
+
+
+var createFiber = function (tag, pendingProps, key, mode) {
+  // $FlowFixMe: the shapes are exact here but Flow doesn't like constructors
+  return new FiberNode(tag, pendingProps, key, mode);
+};
+
+function shouldConstruct(Component) {
+  var prototype = Component.prototype;
+  return !!(prototype && prototype.isReactComponent);
+}
+
+function isSimpleFunctionComponent(type) {
+  return typeof type === 'function' && !shouldConstruct(type) && type.defaultProps === undefined;
+}
+function resolveLazyComponentTag(Component) {
+  if (typeof Component === 'function') {
+    return shouldConstruct(Component) ? ClassComponent : FunctionComponent;
+  } else if (Component !== undefined && Component !== null) {
+    var $$typeof = Component.$$typeof;
+
+    if ($$typeof === REACT_FORWARD_REF_TYPE) {
+      return ForwardRef;
+    }
+
+    if ($$typeof === REACT_MEMO_TYPE) {
+      return MemoComponent;
+    }
+  }
+
+  return IndeterminateComponent;
+} // This is used to create an alternate fiber to do work on.
+
+function createWorkInProgress(current, pendingProps) {
+  var workInProgress = current.alternate;
+
+  if (workInProgress === null) {
+    // We use a double buffering pooling technique because we know that we'll
+    // only ever need at most two versions of a tree. We pool the "other" unused
+    // node that we're free to reuse. This is lazily created to avoid allocating
+    // extra objects for things that are never updated. It also allow us to
+    // reclaim the extra memory if needed.
+    workInProgress = createFiber(current.tag, pendingProps, current.key, current.mode);
+    workInProgress.elementType = current.elementType;
+    workInProgress.type = current.type;
+    workInProgress.stateNode = current.stateNode;
+
+    {
+      // DEV-only fields
+      {
+        workInProgress._debugID = current._debugID;
+      }
+
+      workInProgress._debugSource = current._debugSource;
+      workInProgress._debugOwner = current._debugOwner;
+      workInProgress._debugHookTypes = current._debugHookTypes;
+    }
+
+    workInProgress.alternate = current;
+    current.alternate = workInProgress;
+  } else {
+    workInProgress.pendingProps = pendingProps; // We already have an alternate.
+    // Reset the effect tag.
+
+    workInProgress.effectTag = NoEffect; // The effect list is no longer valid.
+
+    workInProgress.nextEffect = null;
+    workInProgress.firstEffect = null;
+    workInProgress.lastEffect = null;
+
+    {
+      // We intentionally reset, rather than copy, actualDuration & actualStartTime.
+      // This prevents time from endlessly accumulating in new commits.
+      // This has the downside of resetting values for different priority renders,
+      // But works for yielding (the common case) and should support resuming.
+      workInProgress.actualDuration = 0;
+      workInProgress.actualStartTime = -1;
+    }
+  }
+
+  workInProgress.childExpirationTime = current.childExpirationTime;
+  workInProgress.expirationTime = current.expirationTime;
+  workInProgress.child = current.child;
+  workInProgress.memoizedProps = current.memoizedProps;
+  workInProgress.memoizedState = current.memoizedState;
+  workInProgress.updateQueue = current.updateQueue; // Clone the dependencies object. This is mutated during the render phase, so
+  // it cannot be shared with the current fiber.
+
+  var currentDependencies = current.dependencies;
+  workInProgress.dependencies = currentDependencies === null ? null : {
+    expirationTime: currentDependencies.expirationTime,
+    firstContext: currentDependencies.firstContext,
+    responders: currentDependencies.responders
+  }; // These will be overridden during the parent's reconciliation
+
+  workInProgress.sibling = current.sibling;
+  workInProgress.index = current.index;
+  workInProgress.ref = current.ref;
+
+  {
+    workInProgress.selfBaseDuration = current.selfBaseDuration;
+    workInProgress.treeBaseDuration = current.treeBaseDuration;
+  }
+
+  {
+    workInProgress._debugNeedsRemount = current._debugNeedsRemount;
+
+    switch (workInProgress.tag) {
+      case IndeterminateComponent:
+      case FunctionComponent:
+      case SimpleMemoComponent:
+        workInProgress.type = resolveFunctionForHotReloading(current.type);
+        break;
+
+      case ClassComponent:
+        workInProgress.type = resolveClassForHotReloading(current.type);
+        break;
+
+      case ForwardRef:
+        workInProgress.type = resolveForwardRefForHotReloading(current.type);
+        break;
+    }
+  }
+
+  return workInProgress;
+} // Used to reuse a Fiber for a second pass.
+
+function resetWorkInProgress(workInProgress, renderExpirationTime) {
+  // This resets the Fiber to what createFiber or createWorkInProgress would
+  // have set the values to before during the first pass. Ideally this wouldn't
+  // be necessary but unfortunately many code paths reads from the workInProgress
+  // when they should be reading from current and writing to workInProgress.
+  // We assume pendingProps, index, key, ref, return are still untouched to
+  // avoid doing another reconciliation.
+  // Reset the effect tag but keep any Placement tags, since that's something
+  // that child fiber is setting, not the reconciliation.
+  workInProgress.effectTag &= Placement; // The effect list is no longer valid.
+
+  workInProgress.nextEffect = null;
+  workInProgress.firstEffect = null;
+  workInProgress.lastEffect = null;
+  var current = workInProgress.alternate;
+
+  if (current === null) {
+    // Reset to createFiber's initial values.
+    workInProgress.childExpirationTime = NoWork;
+    workInProgress.expirationTime = renderExpirationTime;
+    workInProgress.child = null;
+    workInProgress.memoizedProps = null;
+    workInProgress.memoizedState = null;
+    workInProgress.updateQueue = null;
+    workInProgress.dependencies = null;
+
+    {
+      // Note: We don't reset the actualTime counts. It's useful to accumulate
+      // actual time across multiple render passes.
+      workInProgress.selfBaseDuration = 0;
+      workInProgress.treeBaseDuration = 0;
+    }
+  } else {
+    // Reset to the cloned values that createWorkInProgress would've.
+    workInProgress.childExpirationTime = current.childExpirationTime;
+    workInProgress.expirationTime = current.expirationTime;
+    workInProgress.child = current.child;
+    workInProgress.memoizedProps = current.memoizedProps;
+    workInProgress.memoizedState = current.memoizedState;
+    workInProgress.updateQueue = current.updateQueue; // Clone the dependencies object. This is mutated during the render phase, so
+    // it cannot be shared with the current fiber.
+
+    var currentDependencies = current.dependencies;
+    workInProgress.dependencies = currentDependencies === null ? null : {
+      expirationTime: currentDependencies.expirationTime,
+      firstContext: currentDependencies.firstContext,
+      responders: currentDependencies.responders
+    };
+
+    {
+      // Note: We don't reset the actualTime counts. It's useful to accumulate
+      // actual time across multiple render passes.
+      workInProgress.selfBaseDuration = current.selfBaseDuration;
+      workInProgress.treeBaseDuration = current.treeBaseDuration;
+    }
+  }
+
+  return workInProgress;
+}
+function createHostRootFiber(tag) {
+  var mode;
+
+  if (tag === ConcurrentRoot) {
+    mode = ConcurrentMode | BlockingMode | StrictMode;
+  } else if (tag === BlockingRoot) {
+    mode = BlockingMode | StrictMode;
+  } else {
+    mode = NoMode;
+  }
+
+  if ( isDevToolsPresent) {
+    // Always collect profile timings when DevTools are present.
+    // This enables DevTools to start capturing timing at any point–
+    // Without some nodes in the tree having empty base times.
+    mode |= ProfileMode;
+  }
+
+  return createFiber(HostRoot, null, null, mode);
+}
+function createFiberFromTypeAndProps(type, // React$ElementType
+key, pendingProps, owner, mode, expirationTime) {
+  var fiber;
+  var fiberTag = IndeterminateComponent; // The resolved type is set if we know what the final type will be. I.e. it's not lazy.
+
+  var resolvedType = type;
+
+  if (typeof type === 'function') {
+    if (shouldConstruct(type)) {
+      fiberTag = ClassComponent;
+
+      {
+        resolvedType = resolveClassForHotReloading(resolvedType);
+      }
+    } else {
+      {
+        resolvedType = resolveFunctionForHotReloading(resolvedType);
+      }
+    }
+  } else if (typeof type === 'string') {
+    fiberTag = HostComponent;
+  } else {
+    getTag: switch (type) {
+      case REACT_FRAGMENT_TYPE:
+        return createFiberFromFragment(pendingProps.children, mode, expirationTime, key);
+
+      case REACT_CONCURRENT_MODE_TYPE:
+        fiberTag = Mode;
+        mode |= ConcurrentMode | BlockingMode | StrictMode;
+        break;
+
+      case REACT_STRICT_MODE_TYPE:
+        fiberTag = Mode;
+        mode |= StrictMode;
+        break;
+
+      case REACT_PROFILER_TYPE:
+        return createFiberFromProfiler(pendingProps, mode, expirationTime, key);
+
+      case REACT_SUSPENSE_TYPE:
+        return createFiberFromSuspense(pendingProps, mode, expirationTime, key);
+
+      case REACT_SUSPENSE_LIST_TYPE:
+        return createFiberFromSuspenseList(pendingProps, mode, expirationTime, key);
+
+      default:
+        {
+          if (typeof type === 'object' && type !== null) {
+            switch (type.$$typeof) {
+              case REACT_PROVIDER_TYPE:
+                fiberTag = ContextProvider;
+                break getTag;
+
+              case REACT_CONTEXT_TYPE:
+                // This is a consumer
+                fiberTag = ContextConsumer;
+                break getTag;
+
+              case REACT_FORWARD_REF_TYPE:
+                fiberTag = ForwardRef;
+
+                {
+                  resolvedType = resolveForwardRefForHotReloading(resolvedType);
+                }
+
+                break getTag;
+
+              case REACT_MEMO_TYPE:
+                fiberTag = MemoComponent;
+                break getTag;
+
+              case REACT_LAZY_TYPE:
+                fiberTag = LazyComponent;
+                resolvedType = null;
+                break getTag;
+
+              case REACT_BLOCK_TYPE:
+                fiberTag = Block;
+                break getTag;
+
+            }
+          }
+
+          var info = '';
+
+          {
+            if (type === undefined || typeof type === 'object' && type !== null && Object.keys(type).length === 0) {
+              info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and " + 'named imports.';
+            }
+
+            var ownerName = owner ? getComponentName(owner.type) : null;
+
+            if (ownerName) {
+              info += '\n\nCheck the render method of `' + ownerName + '`.';
+            }
+          }
+
+          {
+            {
+              throw Error( "Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: " + (type == null ? type : typeof type) + "." + info );
+            }
+          }
+        }
+    }
+  }
+
+  fiber = createFiber(fiberTag, pendingProps, key, mode);
+  fiber.elementType = type;
+  fiber.type = resolvedType;
+  fiber.expirationTime = expirationTime;
+  return fiber;
+}
+function createFiberFromElement(element, mode, expirationTime) {
+  var owner = null;
+
+  {
+    owner = element._owner;
+  }
+
+  var type = element.type;
+  var key = element.key;
+  var pendingProps = element.props;
+  var fiber = createFiberFromTypeAndProps(type, key, pendingProps, owner, mode, expirationTime);
+
+  {
+    fiber._debugSource = element._source;
+    fiber._debugOwner = element._owner;
+  }
+
+  return fiber;
+}
+function createFiberFromFragment(elements, mode, expirationTime, key) {
+  var fiber = createFiber(Fragment, elements, key, mode);
+  fiber.expirationTime = expirationTime;
+  return fiber;
+}
+
+function createFiberFromProfiler(pendingProps, mode, expirationTime, key) {
+  {
+    if (typeof pendingProps.id !== 'string' || typeof pendingProps.onRender !== 'function') {
+      error('Profiler must specify an "id" string and "onRender" function as props');
+    }
+  }
+
+  var fiber = createFiber(Profiler, pendingProps, key, mode | ProfileMode); // TODO: The Profiler fiber shouldn't have a type. It has a tag.
+
+  fiber.elementType = REACT_PROFILER_TYPE;
+  fiber.type = REACT_PROFILER_TYPE;
+  fiber.expirationTime = expirationTime;
+  return fiber;
+}
+
+function createFiberFromSuspense(pendingProps, mode, expirationTime, key) {
+  var fiber = createFiber(SuspenseComponent, pendingProps, key, mode); // TODO: The SuspenseComponent fiber shouldn't have a type. It has a tag.
+  // This needs to be fixed in getComponentName so that it relies on the tag
+  // instead.
+
+  fiber.type = REACT_SUSPENSE_TYPE;
+  fiber.elementType = REACT_SUSPENSE_TYPE;
+  fiber.expirationTime = expirationTime;
+  return fiber;
+}
+function createFiberFromSuspenseList(pendingProps, mode, expirationTime, key) {
+  var fiber = createFiber(SuspenseListComponent, pendingProps, key, mode);
+
+  {
+    // TODO: The SuspenseListComponent fiber shouldn't have a type. It has a tag.
+    // This needs to be fixed in getComponentName so that it relies on the tag
+    // instead.
+    fiber.type = REACT_SUSPENSE_LIST_TYPE;
+  }
+
+  fiber.elementType = REACT_SUSPENSE_LIST_TYPE;
+  fiber.expirationTime = expirationTime;
+  return fiber;
+}
+function createFiberFromText(content, mode, expirationTime) {
+  var fiber = createFiber(HostText, content, null, mode);
+  fiber.expirationTime = expirationTime;
+  return fiber;
+}
+function createFiberFromHostInstanceForDeletion() {
+  var fiber = createFiber(HostComponent, null, null, NoMode); // TODO: These should not need a type.
+
+  fiber.elementType = 'DELETED';
+  fiber.type = 'DELETED';
+  return fiber;
+}
+function createFiberFromPortal(portal, mode, expirationTime) {
+  var pendingProps = portal.children !== null ? portal.children : [];
+  var fiber = createFiber(HostPortal, pendingProps, portal.key, mode);
+  fiber.expirationTime = expirationTime;
+  fiber.stateNode = {
+    containerInfo: portal.containerInfo,
+    pendingChildren: null,
+    // Used by persistent updates
+    implementation: portal.implementation
+  };
+  return fiber;
+} // Used for stashing WIP properties to replay failed work in DEV.
+
+function assignFiberPropertiesInDEV(target, source) {
+  if (target === null) {
+    // This Fiber's initial properties will always be overwritten.
+    // We only use a Fiber to ensure the same hidden class so DEV isn't slow.
+    target = createFiber(IndeterminateComponent, null, null, NoMode);
+  } // This is intentionally written as a list of all properties.
+  // We tried to use Object.assign() instead but this is called in
+  // the hottest path, and Object.assign() was too slow:
+  // https://github.com/facebook/react/issues/12502
+  // This code is DEV-only so size is not a concern.
+
+
+  target.tag = source.tag;
+  target.key = source.key;
+  target.elementType = source.elementType;
+  target.type = source.type;
+  target.stateNode = source.stateNode;
+  target.return = source.return;
+  target.child = source.child;
+  target.sibling = source.sibling;
+  target.index = source.index;
+  target.ref = source.ref;
+  target.pendingProps = source.pendingProps;
+  target.memoizedProps = source.memoizedProps;
+  target.updateQueue = source.updateQueue;
+  target.memoizedState = source.memoizedState;
+  target.dependencies = source.dependencies;
+  target.mode = source.mode;
+  target.effectTag = source.effectTag;
+  target.nextEffect = source.nextEffect;
+  target.firstEffect = source.firstEffect;
+  target.lastEffect = source.lastEffect;
+  target.expirationTime = source.expirationTime;
+  target.childExpirationTime = source.childExpirationTime;
+  target.alternate = source.alternate;
+
+  {
+    target.actualDuration = source.actualDuration;
+    target.actualStartTime = source.actualStartTime;
+    target.selfBaseDuration = source.selfBaseDuration;
+    target.treeBaseDuration = source.treeBaseDuration;
+  }
+
+  {
+    target._debugID = source._debugID;
+  }
+
+  target._debugSource = source._debugSource;
+  target._debugOwner = source._debugOwner;
+  target._debugIsCurrentlyTiming = source._debugIsCurrentlyTiming;
+  target._debugNeedsRemount = source._debugNeedsRemount;
+  target._debugHookTypes = source._debugHookTypes;
+  return target;
+}
+
+function FiberRootNode(containerInfo, tag, hydrate) {
+  this.tag = tag;
+  this.current = null;
+  this.containerInfo = containerInfo;
+  this.pendingChildren = null;
+  this.pingCache = null;
+  this.finishedExpirationTime = NoWork;
+  this.finishedWork = null;
+  this.timeoutHandle = noTimeout;
+  this.context = null;
+  this.pendingContext = null;
+  this.hydrate = hydrate;
+  this.callbackNode = null;
+  this.callbackPriority = NoPriority;
+  this.firstPendingTime = NoWork;
+  this.firstSuspendedTime = NoWork;
+  this.lastSuspendedTime = NoWork;
+  this.nextKnownPendingLevel = NoWork;
+  this.lastPingedTime = NoWork;
+  this.lastExpiredTime = NoWork;
+
+  {
+    this.interactionThreadID = tracing.unstable_getThreadID();
+    this.memoizedInteractions = new Set();
+    this.pendingInteractionMap = new Map();
+  }
+}
+
+function createFiberRoot(containerInfo, tag, hydrate, hydrationCallbacks) {
+  var root = new FiberRootNode(containerInfo, tag, hydrate);
+  // stateNode is any.
+
+
+  var uninitializedFiber = createHostRootFiber(tag);
+  root.current = uninitializedFiber;
+  uninitializedFiber.stateNode = root;
+  initializeUpdateQueue(uninitializedFiber);
+  return root;
+}
+function isRootSuspendedAtTime(root, expirationTime) {
+  var firstSuspendedTime = root.firstSuspendedTime;
+  var lastSuspendedTime = root.lastSuspendedTime;
+  return firstSuspendedTime !== NoWork && firstSuspendedTime >= expirationTime && lastSuspendedTime <= expirationTime;
+}
+function markRootSuspendedAtTime(root, expirationTime) {
+  var firstSuspendedTime = root.firstSuspendedTime;
+  var lastSuspendedTime = root.lastSuspendedTime;
+
+  if (firstSuspendedTime < expirationTime) {
+    root.firstSuspendedTime = expirationTime;
+  }
+
+  if (lastSuspendedTime > expirationTime || firstSuspendedTime === NoWork) {
+    root.lastSuspendedTime = expirationTime;
+  }
+
+  if (expirationTime <= root.lastPingedTime) {
+    root.lastPingedTime = NoWork;
+  }
+
+  if (expirationTime <= root.lastExpiredTime) {
+    root.lastExpiredTime = NoWork;
+  }
+}
+function markRootUpdatedAtTime(root, expirationTime) {
+  // Update the range of pending times
+  var firstPendingTime = root.firstPendingTime;
+
+  if (expirationTime > firstPendingTime) {
+    root.firstPendingTime = expirationTime;
+  } // Update the range of suspended times. Treat everything lower priority or
+  // equal to this update as unsuspended.
+
+
+  var firstSuspendedTime = root.firstSuspendedTime;
+
+  if (firstSuspendedTime !== NoWork) {
+    if (expirationTime >= firstSuspendedTime) {
+      // The entire suspended range is now unsuspended.
+      root.firstSuspendedTime = root.lastSuspendedTime = root.nextKnownPendingLevel = NoWork;
+    } else if (expirationTime >= root.lastSuspendedTime) {
+      root.lastSuspendedTime = expirationTime + 1;
+    } // This is a pending level. Check if it's higher priority than the next
+    // known pending level.
+
+
+    if (expirationTime > root.nextKnownPendingLevel) {
+      root.nextKnownPendingLevel = expirationTime;
+    }
+  }
+}
+function markRootFinishedAtTime(root, finishedExpirationTime, remainingExpirationTime) {
+  // Update the range of pending times
+  root.firstPendingTime = remainingExpirationTime; // Update the range of suspended times. Treat everything higher priority or
+  // equal to this update as unsuspended.
+
+  if (finishedExpirationTime <= root.lastSuspendedTime) {
+    // The entire suspended range is now unsuspended.
+    root.firstSuspendedTime = root.lastSuspendedTime = root.nextKnownPendingLevel = NoWork;
+  } else if (finishedExpirationTime <= root.firstSuspendedTime) {
+    // Part of the suspended range is now unsuspended. Narrow the range to
+    // include everything between the unsuspended time (non-inclusive) and the
+    // last suspended time.
+    root.firstSuspendedTime = finishedExpirationTime - 1;
+  }
+
+  if (finishedExpirationTime <= root.lastPingedTime) {
+    // Clear the pinged time
+    root.lastPingedTime = NoWork;
+  }
+
+  if (finishedExpirationTime <= root.lastExpiredTime) {
+    // Clear the expired time
+    root.lastExpiredTime = NoWork;
+  }
+}
+function markRootExpiredAtTime(root, expirationTime) {
+  var lastExpiredTime = root.lastExpiredTime;
+
+  if (lastExpiredTime === NoWork || lastExpiredTime > expirationTime) {
+    root.lastExpiredTime = expirationTime;
+  }
+}
+
+var didWarnAboutNestedUpdates;
+var didWarnAboutFindNodeInStrictMode;
+
+{
+  didWarnAboutNestedUpdates = false;
+  didWarnAboutFindNodeInStrictMode = {};
+}
+
+function getContextForSubtree(parentComponent) {
+  if (!parentComponent) {
+    return emptyContextObject;
+  }
+
+  var fiber = get(parentComponent);
+  var parentContext = findCurrentUnmaskedContext(fiber);
+
+  if (fiber.tag === ClassComponent) {
+    var Component = fiber.type;
+
+    if (isContextProvider(Component)) {
+      return processChildContext(fiber, Component, parentContext);
+    }
+  }
+
+  return parentContext;
+}
+
+function findHostInstanceWithWarning(component, methodName) {
+  {
+    var fiber = get(component);
+
+    if (fiber === undefined) {
+      if (typeof component.render === 'function') {
+        {
+          {
+            throw Error( "Unable to find node on an unmounted component." );
+          }
+        }
+      } else {
+        {
+          {
+            throw Error( "Argument appears to not be a ReactComponent. Keys: " + Object.keys(component) );
+          }
+        }
+      }
+    }
+
+    var hostFiber = findCurrentHostFiber(fiber);
+
+    if (hostFiber === null) {
+      return null;
+    }
+
+    if (hostFiber.mode & StrictMode) {
+      var componentName = getComponentName(fiber.type) || 'Component';
+
+      if (!didWarnAboutFindNodeInStrictMode[componentName]) {
+        didWarnAboutFindNodeInStrictMode[componentName] = true;
+
+        if (fiber.mode & StrictMode) {
+          error('%s is deprecated in StrictMode. ' + '%s was passed an instance of %s which is inside StrictMode. ' + 'Instead, add a ref directly to the element you want to reference. ' + 'Learn more about using refs safely here: ' + 'https://fb.me/react-strict-mode-find-node%s', methodName, methodName, componentName, getStackByFiberInDevAndProd(hostFiber));
+        } else {
+          error('%s is deprecated in StrictMode. ' + '%s was passed an instance of %s which renders StrictMode children. ' + 'Instead, add a ref directly to the element you want to reference. ' + 'Learn more about using refs safely here: ' + 'https://fb.me/react-strict-mode-find-node%s', methodName, methodName, componentName, getStackByFiberInDevAndProd(hostFiber));
+        }
+      }
+    }
+
+    return hostFiber.stateNode;
+  }
+}
+
+function createContainer(containerInfo, tag, hydrate, hydrationCallbacks) {
+  return createFiberRoot(containerInfo, tag, hydrate);
+}
+function updateContainer(element, container, parentComponent, callback) {
+  {
+    onScheduleRoot(container, element);
+  }
+
+  var current$1 = container.current;
+  var currentTime = requestCurrentTimeForUpdate();
+
+  {
+    // $FlowExpectedError - jest isn't a global, and isn't recognized outside of tests
+    if ('undefined' !== typeof jest) {
+      warnIfUnmockedScheduler(current$1);
+      warnIfNotScopedWithMatchingAct(current$1);
+    }
+  }
+
+  var suspenseConfig = requestCurrentSuspenseConfig();
+  var expirationTime = computeExpirationForFiber(currentTime, current$1, suspenseConfig);
+  var context = getContextForSubtree(parentComponent);
+
+  if (container.context === null) {
+    container.context = context;
+  } else {
+    container.pendingContext = context;
+  }
+
+  {
+    if (isRendering && current !== null && !didWarnAboutNestedUpdates) {
+      didWarnAboutNestedUpdates = true;
+
+      error('Render methods should be a pure function of props and state; ' + 'triggering nested component updates from render is not allowed. ' + 'If necessary, trigger nested updates in componentDidUpdate.\n\n' + 'Check the render method of %s.', getComponentName(current.type) || 'Unknown');
+    }
+  }
+
+  var update = createUpdate(expirationTime, suspenseConfig); // Caution: React DevTools currently depends on this property
+  // being called "element".
+
+  update.payload = {
+    element: element
+  };
+  callback = callback === undefined ? null : callback;
+
+  if (callback !== null) {
+    {
+      if (typeof callback !== 'function') {
+        error('render(...): Expected the last optional `callback` argument to be a ' + 'function. Instead received: %s.', callback);
+      }
+    }
+
+    update.callback = callback;
+  }
+
+  enqueueUpdate(current$1, update);
+  scheduleWork(current$1, expirationTime);
+  return expirationTime;
+}
+function getPublicRootInstance(container) {
+  var containerFiber = container.current;
+
+  if (!containerFiber.child) {
+    return null;
+  }
+
+  switch (containerFiber.child.tag) {
+    case HostComponent:
+      return getPublicInstance(containerFiber.child.stateNode);
+
+    default:
+      return containerFiber.child.stateNode;
+  }
+}
+
+function markRetryTimeImpl(fiber, retryTime) {
+  var suspenseState = fiber.memoizedState;
+
+  if (suspenseState !== null && suspenseState.dehydrated !== null) {
+    if (suspenseState.retryTime < retryTime) {
+      suspenseState.retryTime = retryTime;
+    }
+  }
+} // Increases the priority of thennables when they resolve within this boundary.
+
+
+function markRetryTimeIfNotHydrated(fiber, retryTime) {
+  markRetryTimeImpl(fiber, retryTime);
+  var alternate = fiber.alternate;
+
+  if (alternate) {
+    markRetryTimeImpl(alternate, retryTime);
+  }
+}
+
+function attemptUserBlockingHydration$1(fiber) {
+  if (fiber.tag !== SuspenseComponent) {
+    // We ignore HostRoots here because we can't increase
+    // their priority and they should not suspend on I/O,
+    // since you have to wrap anything that might suspend in
+    // Suspense.
+    return;
+  }
+
+  var expTime = computeInteractiveExpiration(requestCurrentTimeForUpdate());
+  scheduleWork(fiber, expTime);
+  markRetryTimeIfNotHydrated(fiber, expTime);
+}
+function attemptContinuousHydration$1(fiber) {
+  if (fiber.tag !== SuspenseComponent) {
+    // We ignore HostRoots here because we can't increase
+    // their priority and they should not suspend on I/O,
+    // since you have to wrap anything that might suspend in
+    // Suspense.
+    return;
+  }
+
+  scheduleWork(fiber, ContinuousHydration);
+  markRetryTimeIfNotHydrated(fiber, ContinuousHydration);
+}
+function attemptHydrationAtCurrentPriority$1(fiber) {
+  if (fiber.tag !== SuspenseComponent) {
+    // We ignore HostRoots here because we can't increase
+    // their priority other than synchronously flush it.
+    return;
+  }
+
+  var currentTime = requestCurrentTimeForUpdate();
+  var expTime = computeExpirationForFiber(currentTime, fiber, null);
+  scheduleWork(fiber, expTime);
+  markRetryTimeIfNotHydrated(fiber, expTime);
+}
+function findHostInstanceWithNoPortals(fiber) {
+  var hostFiber = findCurrentHostFiberWithNoPortals(fiber);
+
+  if (hostFiber === null) {
+    return null;
+  }
+
+  if (hostFiber.tag === FundamentalComponent) {
+    return hostFiber.stateNode.instance;
+  }
+
+  return hostFiber.stateNode;
+}
+
+var shouldSuspendImpl = function (fiber) {
+  return false;
+};
+
+function shouldSuspend(fiber) {
+  return shouldSuspendImpl(fiber);
+}
+var overrideHookState = null;
+var overrideProps = null;
+var scheduleUpdate = null;
+var setSuspenseHandler = null;
+
+{
+  var copyWithSetImpl = function (obj, path, idx, value) {
+    if (idx >= path.length) {
+      return value;
+    }
+
+    var key = path[idx];
+    var updated = Array.isArray(obj) ? obj.slice() : _assign({}, obj); // $FlowFixMe number or string is fine here
+
+    updated[key] = copyWithSetImpl(obj[key], path, idx + 1, value);
+    return updated;
+  };
+
+  var copyWithSet = function (obj, path, value) {
+    return copyWithSetImpl(obj, path, 0, value);
+  }; // Support DevTools editable values for useState and useReducer.
+
+
+  overrideHookState = function (fiber, id, path, value) {
+    // For now, the "id" of stateful hooks is just the stateful hook index.
+    // This may change in the future with e.g. nested hooks.
+    var currentHook = fiber.memoizedState;
+
+    while (currentHook !== null && id > 0) {
+      currentHook = currentHook.next;
+      id--;
+    }
+
+    if (currentHook !== null) {
+      var newState = copyWithSet(currentHook.memoizedState, path, value);
+      currentHook.memoizedState = newState;
+      currentHook.baseState = newState; // We aren't actually adding an update to the queue,
+      // because there is no update we can add for useReducer hooks that won't trigger an error.
+      // (There's no appropriate action type for DevTools overrides.)
+      // As a result though, React will see the scheduled update as a noop and bailout.
+      // Shallow cloning props works as a workaround for now to bypass the bailout check.
+
+      fiber.memoizedProps = _assign({}, fiber.memoizedProps);
+      scheduleWork(fiber, Sync);
+    }
+  }; // Support DevTools props for function components, forwardRef, memo, host components, etc.
+
+
+  overrideProps = function (fiber, path, value) {
+    fiber.pendingProps = copyWithSet(fiber.memoizedProps, path, value);
+
+    if (fiber.alternate) {
+      fiber.alternate.pendingProps = fiber.pendingProps;
+    }
+
+    scheduleWork(fiber, Sync);
+  };
+
+  scheduleUpdate = function (fiber) {
+    scheduleWork(fiber, Sync);
+  };
+
+  setSuspenseHandler = function (newShouldSuspendImpl) {
+    shouldSuspendImpl = newShouldSuspendImpl;
+  };
+}
+
+function injectIntoDevTools(devToolsConfig) {
+  var findFiberByHostInstance = devToolsConfig.findFiberByHostInstance;
+  var ReactCurrentDispatcher = ReactSharedInternals.ReactCurrentDispatcher;
+  return injectInternals(_assign({}, devToolsConfig, {
+    overrideHookState: overrideHookState,
+    overrideProps: overrideProps,
+    setSuspenseHandler: setSuspenseHandler,
+    scheduleUpdate: scheduleUpdate,
+    currentDispatcherRef: ReactCurrentDispatcher,
+    findHostInstanceByFiber: function (fiber) {
+      var hostFiber = findCurrentHostFiber(fiber);
+
+      if (hostFiber === null) {
+        return null;
+      }
+
+      return hostFiber.stateNode;
+    },
+    findFiberByHostInstance: function (instance) {
+      if (!findFiberByHostInstance) {
+        // Might not be implemented by the renderer.
+        return null;
+      }
+
+      return findFiberByHostInstance(instance);
+    },
+    // React Refresh
+    findHostInstancesForRefresh:  findHostInstancesForRefresh ,
+    scheduleRefresh:  scheduleRefresh ,
+    scheduleRoot:  scheduleRoot ,
+    setRefreshHandler:  setRefreshHandler ,
+    // Enables DevTools to append owner stacks to error messages in DEV mode.
+    getCurrentFiber:  function () {
+      return current;
+    }
+  }));
+}
+var IsSomeRendererActing$1 = ReactSharedInternals.IsSomeRendererActing;
+
+function ReactDOMRoot(container, options) {
+  this._internalRoot = createRootImpl(container, ConcurrentRoot, options);
+}
+
+function ReactDOMBlockingRoot(container, tag, options) {
+  this._internalRoot = createRootImpl(container, tag, options);
+}
+
+ReactDOMRoot.prototype.render = ReactDOMBlockingRoot.prototype.render = function (children) {
+  var root = this._internalRoot;
+
+  {
+    if (typeof arguments[1] === 'function') {
+      error('render(...): does not support the second callback argument. ' + 'To execute a side effect after rendering, declare it in a component body with useEffect().');
+    }
+
+    var container = root.containerInfo;
+
+    if (container.nodeType !== COMMENT_NODE) {
+      var hostInstance = findHostInstanceWithNoPortals(root.current);
+
+      if (hostInstance) {
+        if (hostInstance.parentNode !== container) {
+          error('render(...): It looks like the React-rendered content of the ' + 'root container was removed without using React. This is not ' + 'supported and will cause errors. Instead, call ' + "root.unmount() to empty a root's container.");
+        }
+      }
+    }
+  }
+
+  updateContainer(children, root, null, null);
+};
+
+ReactDOMRoot.prototype.unmount = ReactDOMBlockingRoot.prototype.unmount = function () {
+  {
+    if (typeof arguments[0] === 'function') {
+      error('unmount(...): does not support a callback argument. ' + 'To execute a side effect after rendering, declare it in a component body with useEffect().');
+    }
+  }
+
+  var root = this._internalRoot;
+  var container = root.containerInfo;
+  updateContainer(null, root, null, function () {
+    unmarkContainerAsRoot(container);
+  });
+};
+
+function createRootImpl(container, tag, options) {
+  // Tag is either LegacyRoot or Concurrent Root
+  var hydrate = options != null && options.hydrate === true;
+  var hydrationCallbacks = options != null && options.hydrationOptions || null;
+  var root = createContainer(container, tag, hydrate);
+  markContainerAsRoot(root.current, container);
+
+  if (hydrate && tag !== LegacyRoot) {
+    var doc = container.nodeType === DOCUMENT_NODE ? container : container.ownerDocument;
+    eagerlyTrapReplayableEvents(container, doc);
+  }
+
+  return root;
+}
+function createLegacyRoot(container, options) {
+  return new ReactDOMBlockingRoot(container, LegacyRoot, options);
+}
+function isValidContainer(node) {
+  return !!(node && (node.nodeType === ELEMENT_NODE || node.nodeType === DOCUMENT_NODE || node.nodeType === DOCUMENT_FRAGMENT_NODE || node.nodeType === COMMENT_NODE && node.nodeValue === ' react-mount-point-unstable '));
+}
+
+var ReactCurrentOwner$3 = ReactSharedInternals.ReactCurrentOwner;
+var topLevelUpdateWarnings;
+var warnedAboutHydrateAPI = false;
+
+{
+  topLevelUpdateWarnings = function (container) {
+    if (container._reactRootContainer && container.nodeType !== COMMENT_NODE) {
+      var hostInstance = findHostInstanceWithNoPortals(container._reactRootContainer._internalRoot.current);
+
+      if (hostInstance) {
+        if (hostInstance.parentNode !== container) {
+          error('render(...): It looks like the React-rendered content of this ' + 'container was removed without using React. This is not ' + 'supported and will cause errors. Instead, call ' + 'ReactDOM.unmountComponentAtNode to empty a container.');
+        }
+      }
+    }
+
+    var isRootRenderedBySomeReact = !!container._reactRootContainer;
+    var rootEl = getReactRootElementInContainer(container);
+    var hasNonRootReactChild = !!(rootEl && getInstanceFromNode$1(rootEl));
+
+    if (hasNonRootReactChild && !isRootRenderedBySomeReact) {
+      error('render(...): Replacing React-rendered children with a new root ' + 'component. If you intended to update the children of this node, ' + 'you should instead have the existing children update their state ' + 'and render the new components instead of calling ReactDOM.render.');
+    }
+
+    if (container.nodeType === ELEMENT_NODE && container.tagName && container.tagName.toUpperCase() === 'BODY') {
+      error('render(): Rendering components directly into document.body is ' + 'discouraged, since its children are often manipulated by third-party ' + 'scripts and browser extensions. This may lead to subtle ' + 'reconciliation issues. Try rendering into a container element created ' + 'for your app.');
+    }
+  };
+}
+
+function getReactRootElementInContainer(container) {
+  if (!container) {
+    return null;
+  }
+
+  if (container.nodeType === DOCUMENT_NODE) {
+    return container.documentElement;
+  } else {
+    return container.firstChild;
+  }
+}
+
+function shouldHydrateDueToLegacyHeuristic(container) {
+  var rootElement = getReactRootElementInContainer(container);
+  return !!(rootElement && rootElement.nodeType === ELEMENT_NODE && rootElement.hasAttribute(ROOT_ATTRIBUTE_NAME));
+}
+
+function legacyCreateRootFromDOMContainer(container, forceHydrate) {
+  var shouldHydrate = forceHydrate || shouldHydrateDueToLegacyHeuristic(container); // First clear any existing content.
+
+  if (!shouldHydrate) {
+    var warned = false;
+    var rootSibling;
+
+    while (rootSibling = container.lastChild) {
+      {
+        if (!warned && rootSibling.nodeType === ELEMENT_NODE && rootSibling.hasAttribute(ROOT_ATTRIBUTE_NAME)) {
+          warned = true;
+
+          error('render(): Target node has markup rendered by React, but there ' + 'are unrelated nodes as well. This is most commonly caused by ' + 'white-space inserted around server-rendered markup.');
+        }
+      }
+
+      container.removeChild(rootSibling);
+    }
+  }
+
+  {
+    if (shouldHydrate && !forceHydrate && !warnedAboutHydrateAPI) {
+      warnedAboutHydrateAPI = true;
+
+      warn('render(): Calling ReactDOM.render() to hydrate server-rendered markup ' + 'will stop working in React v17. Replace the ReactDOM.render() call ' + 'with ReactDOM.hydrate() if you want React to attach to the server HTML.');
+    }
+  }
+
+  return createLegacyRoot(container, shouldHydrate ? {
+    hydrate: true
+  } : undefined);
+}
+
+function warnOnInvalidCallback$1(callback, callerName) {
+  {
+    if (callback !== null && typeof callback !== 'function') {
+      error('%s(...): Expected the last optional `callback` argument to be a ' + 'function. Instead received: %s.', callerName, callback);
+    }
+  }
+}
+
+function legacyRenderSubtreeIntoContainer(parentComponent, children, container, forceHydrate, callback) {
+  {
+    topLevelUpdateWarnings(container);
+    warnOnInvalidCallback$1(callback === undefined ? null : callback, 'render');
+  } // TODO: Without `any` type, Flow says "Property cannot be accessed on any
+  // member of intersection type." Whyyyyyy.
+
+
+  var root = container._reactRootContainer;
+  var fiberRoot;
+
+  if (!root) {
+    // Initial mount
+    root = container._reactRootContainer = legacyCreateRootFromDOMContainer(container, forceHydrate);
+    fiberRoot = root._internalRoot;
+
+    if (typeof callback === 'function') {
+      var originalCallback = callback;
+
+      callback = function () {
+        var instance = getPublicRootInstance(fiberRoot);
+        originalCallback.call(instance);
+      };
+    } // Initial mount should not be batched.
+
+
+    unbatchedUpdates(function () {
+      updateContainer(children, fiberRoot, parentComponent, callback);
+    });
+  } else {
+    fiberRoot = root._internalRoot;
+
+    if (typeof callback === 'function') {
+      var _originalCallback = callback;
+
+      callback = function () {
+        var instance = getPublicRootInstance(fiberRoot);
+
+        _originalCallback.call(instance);
+      };
+    } // Update
+
+
+    updateContainer(children, fiberRoot, parentComponent, callback);
+  }
+
+  return getPublicRootInstance(fiberRoot);
+}
+
+function findDOMNode(componentOrElement) {
+  {
+    var owner = ReactCurrentOwner$3.current;
+
+    if (owner !== null && owner.stateNode !== null) {
+      var warnedAboutRefsInRender = owner.stateNode._warnedAboutRefsInRender;
+
+      if (!warnedAboutRefsInRender) {
+        error('%s is accessing findDOMNode inside its render(). ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentName(owner.type) || 'A component');
+      }
+
+      owner.stateNode._warnedAboutRefsInRender = true;
+    }
+  }
+
+  if (componentOrElement == null) {
+    return null;
+  }
+
+  if (componentOrElement.nodeType === ELEMENT_NODE) {
+    return componentOrElement;
+  }
+
+  {
+    return findHostInstanceWithWarning(componentOrElement, 'findDOMNode');
+  }
+}
+function hydrate(element, container, callback) {
+  if (!isValidContainer(container)) {
+    {
+      throw Error( "Target container is not a DOM element." );
+    }
+  }
+
+  {
+    var isModernRoot = isContainerMarkedAsRoot(container) && container._reactRootContainer === undefined;
+
+    if (isModernRoot) {
+      error('You are calling ReactDOM.hydrate() on a container that was previously ' + 'passed to ReactDOM.createRoot(). This is not supported. ' + 'Did you mean to call createRoot(container, {hydrate: true}).render(element)?');
+    }
+  } // TODO: throw or warn if we couldn't hydrate?
+
+
+  return legacyRenderSubtreeIntoContainer(null, element, container, true, callback);
+}
+function render(element, container, callback) {
+  if (!isValidContainer(container)) {
+    {
+      throw Error( "Target container is not a DOM element." );
+    }
+  }
+
+  {
+    var isModernRoot = isContainerMarkedAsRoot(container) && container._reactRootContainer === undefined;
+
+    if (isModernRoot) {
+      error('You are calling ReactDOM.render() on a container that was previously ' + 'passed to ReactDOM.createRoot(). This is not supported. ' + 'Did you mean to call root.render(element)?');
+    }
+  }
+
+  return legacyRenderSubtreeIntoContainer(null, element, container, false, callback);
+}
+function unstable_renderSubtreeIntoContainer(parentComponent, element, containerNode, callback) {
+  if (!isValidContainer(containerNode)) {
+    {
+      throw Error( "Target container is not a DOM element." );
+    }
+  }
+
+  if (!(parentComponent != null && has(parentComponent))) {
+    {
+      throw Error( "parentComponent must be a valid React Component" );
+    }
+  }
+
+  return legacyRenderSubtreeIntoContainer(parentComponent, element, containerNode, false, callback);
+}
+function unmountComponentAtNode(container) {
+  if (!isValidContainer(container)) {
+    {
+      throw Error( "unmountComponentAtNode(...): Target container is not a DOM element." );
+    }
+  }
+
+  {
+    var isModernRoot = isContainerMarkedAsRoot(container) && container._reactRootContainer === undefined;
+
+    if (isModernRoot) {
+      error('You are calling ReactDOM.unmountComponentAtNode() on a container that was previously ' + 'passed to ReactDOM.createRoot(). This is not supported. Did you mean to call root.unmount()?');
+    }
+  }
+
+  if (container._reactRootContainer) {
+    {
+      var rootEl = getReactRootElementInContainer(container);
+      var renderedByDifferentReact = rootEl && !getInstanceFromNode$1(rootEl);
+
+      if (renderedByDifferentReact) {
+        error("unmountComponentAtNode(): The node you're attempting to unmount " + 'was rendered by another copy of React.');
+      }
+    } // Unmount should not be batched.
+
+
+    unbatchedUpdates(function () {
+      legacyRenderSubtreeIntoContainer(null, null, container, false, function () {
+        // $FlowFixMe This should probably use `delete container._reactRootContainer`
+        container._reactRootContainer = null;
+        unmarkContainerAsRoot(container);
+      });
+    }); // If you call unmountComponentAtNode twice in quick succession, you'll
+    // get `true` twice. That's probably fine?
+
+    return true;
+  } else {
+    {
+      var _rootEl = getReactRootElementInContainer(container);
+
+      var hasNonRootReactChild = !!(_rootEl && getInstanceFromNode$1(_rootEl)); // Check if the container itself is a React root node.
+
+      var isContainerReactRoot = container.nodeType === ELEMENT_NODE && isValidContainer(container.parentNode) && !!container.parentNode._reactRootContainer;
+
+      if (hasNonRootReactChild) {
+        error("unmountComponentAtNode(): The node you're attempting to unmount " + 'was rendered by React and is not a top-level container. %s', isContainerReactRoot ? 'You may have accidentally passed in a React root node instead ' + 'of its container.' : 'Instead, have the parent component update its state and ' + 'rerender in order to remove this component.');
+      }
+    }
+
+    return false;
+  }
+}
+
+function createPortal(children, containerInfo, // TODO: figure out the API for cross-renderer implementation.
+implementation) {
+  var key = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;
+  return {
+    // This tag allow us to uniquely identify this as a React Portal
+    $$typeof: REACT_PORTAL_TYPE,
+    key: key == null ? null : '' + key,
+    children: children,
+    containerInfo: containerInfo,
+    implementation: implementation
+  };
+}
+
+var ReactVersion = '16.14.0';
+
+setAttemptUserBlockingHydration(attemptUserBlockingHydration$1);
+setAttemptContinuousHydration(attemptContinuousHydration$1);
+setAttemptHydrationAtCurrentPriority(attemptHydrationAtCurrentPriority$1);
+var didWarnAboutUnstableCreatePortal = false;
+
+{
+  if (typeof Map !== 'function' || // $FlowIssue Flow incorrectly thinks Map has no prototype
+  Map.prototype == null || typeof Map.prototype.forEach !== 'function' || typeof Set !== 'function' || // $FlowIssue Flow incorrectly thinks Set has no prototype
+  Set.prototype == null || typeof Set.prototype.clear !== 'function' || typeof Set.prototype.forEach !== 'function') {
+    error('React depends on Map and Set built-in types. Make sure that you load a ' + 'polyfill in older browsers. https://fb.me/react-polyfills');
+  }
+}
+
+setRestoreImplementation(restoreControlledState$3);
+setBatchingImplementation(batchedUpdates$1, discreteUpdates$1, flushDiscreteUpdates, batchedEventUpdates$1);
+
+function createPortal$1(children, container) {
+  var key = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;
+
+  if (!isValidContainer(container)) {
+    {
+      throw Error( "Target container is not a DOM element." );
+    }
+  } // TODO: pass ReactDOM portal implementation as third argument
+  // $FlowFixMe The Flow type is opaque but there's no way to actually create it.
+
+
+  return createPortal(children, container, null, key);
+}
+
+function renderSubtreeIntoContainer(parentComponent, element, containerNode, callback) {
+
+  return unstable_renderSubtreeIntoContainer(parentComponent, element, containerNode, callback);
+}
+
+function unstable_createPortal(children, container) {
+  var key = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;
+
+  {
+    if (!didWarnAboutUnstableCreatePortal) {
+      didWarnAboutUnstableCreatePortal = true;
+
+      warn('The ReactDOM.unstable_createPortal() alias has been deprecated, ' + 'and will be removed in React 17+. Update your code to use ' + 'ReactDOM.createPortal() instead. It has the exact same API, ' + 'but without the "unstable_" prefix.');
+    }
+  }
+
+  return createPortal$1(children, container, key);
+}
+
+var Internals = {
+  // Keep in sync with ReactDOMUnstableNativeDependencies.js
+  // ReactTestUtils.js, and ReactTestUtilsAct.js. This is an array for better minification.
+  Events: [getInstanceFromNode$1, getNodeFromInstance$1, getFiberCurrentPropsFromNode$1, injectEventPluginsByName, eventNameDispatchConfigs, accumulateTwoPhaseDispatches, accumulateDirectDispatches, enqueueStateRestore, restoreStateIfNeeded, dispatchEvent, runEventsInBatch, flushPassiveEffects, IsThisRendererActing]
+};
+var foundDevTools = injectIntoDevTools({
+  findFiberByHostInstance: getClosestInstanceFromNode,
+  bundleType:  1 ,
+  version: ReactVersion,
+  rendererPackageName: 'react-dom'
+});
+
+{
+  if (!foundDevTools && canUseDOM && window.top === window.self) {
+    // If we're in Chrome or Firefox, provide a download link if not installed.
+    if (navigator.userAgent.indexOf('Chrome') > -1 && navigator.userAgent.indexOf('Edge') === -1 || navigator.userAgent.indexOf('Firefox') > -1) {
+      var protocol = window.location.protocol; // Don't warn in exotic cases like chrome-extension://.
+
+      if (/^(https?|file):$/.test(protocol)) {
+        // eslint-disable-next-line react-internal/no-production-logging
+        console.info('%cDownload the React DevTools ' + 'for a better development experience: ' + 'https://fb.me/react-devtools' + (protocol === 'file:' ? '\nYou might need to use a local HTTP server (instead of file://): ' + 'https://fb.me/react-devtools-faq' : ''), 'font-weight:bold');
+      }
+    }
+  }
+}
+
+exports.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED = Internals;
+exports.createPortal = createPortal$1;
+exports.findDOMNode = findDOMNode;
+exports.flushSync = flushSync;
+exports.hydrate = hydrate;
+exports.render = render;
+exports.unmountComponentAtNode = unmountComponentAtNode;
+exports.unstable_batchedUpdates = batchedUpdates$1;
+exports.unstable_createPortal = unstable_createPortal;
+exports.unstable_renderSubtreeIntoContainer = renderSubtreeIntoContainer;
+exports.version = ReactVersion;
+  })();
+}
diff --git a/igv_component/node_modules/react-dom/cjs/react-dom.production.min.js b/igv_component/node_modules/react-dom/cjs/react-dom.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..a57da8b1949129374eb748f7e2062aa7967fe9f8
--- /dev/null
+++ b/igv_component/node_modules/react-dom/cjs/react-dom.production.min.js
@@ -0,0 +1,292 @@
+/** @license React v16.14.0
+ * react-dom.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/*
+ Modernizr 3.0.0pre (Custom Build) | MIT
+*/
+'use strict';var aa=require("react"),n=require("object-assign"),r=require("scheduler");function u(a){for(var b="https://reactjs.org/docs/error-decoder.html?invariant="+a,c=1;c<arguments.length;c++)b+="&args[]="+encodeURIComponent(arguments[c]);return"Minified React error #"+a+"; visit "+b+" for the full message or use the non-minified dev environment for full errors and additional helpful warnings."}if(!aa)throw Error(u(227));
+function ba(a,b,c,d,e,f,g,h,k){var l=Array.prototype.slice.call(arguments,3);try{b.apply(c,l)}catch(m){this.onError(m)}}var da=!1,ea=null,fa=!1,ha=null,ia={onError:function(a){da=!0;ea=a}};function ja(a,b,c,d,e,f,g,h,k){da=!1;ea=null;ba.apply(ia,arguments)}function ka(a,b,c,d,e,f,g,h,k){ja.apply(this,arguments);if(da){if(da){var l=ea;da=!1;ea=null}else throw Error(u(198));fa||(fa=!0,ha=l)}}var la=null,ma=null,na=null;
+function oa(a,b,c){var d=a.type||"unknown-event";a.currentTarget=na(c);ka(d,b,void 0,a);a.currentTarget=null}var pa=null,qa={};
+function ra(){if(pa)for(var a in qa){var b=qa[a],c=pa.indexOf(a);if(!(-1<c))throw Error(u(96,a));if(!sa[c]){if(!b.extractEvents)throw Error(u(97,a));sa[c]=b;c=b.eventTypes;for(var d in c){var e=void 0;var f=c[d],g=b,h=d;if(ta.hasOwnProperty(h))throw Error(u(99,h));ta[h]=f;var k=f.phasedRegistrationNames;if(k){for(e in k)k.hasOwnProperty(e)&&ua(k[e],g,h);e=!0}else f.registrationName?(ua(f.registrationName,g,h),e=!0):e=!1;if(!e)throw Error(u(98,d,a));}}}}
+function ua(a,b,c){if(va[a])throw Error(u(100,a));va[a]=b;wa[a]=b.eventTypes[c].dependencies}var sa=[],ta={},va={},wa={};function xa(a){var b=!1,c;for(c in a)if(a.hasOwnProperty(c)){var d=a[c];if(!qa.hasOwnProperty(c)||qa[c]!==d){if(qa[c])throw Error(u(102,c));qa[c]=d;b=!0}}b&&ra()}var ya=!("undefined"===typeof window||"undefined"===typeof window.document||"undefined"===typeof window.document.createElement),za=null,Aa=null,Ba=null;
+function Ca(a){if(a=ma(a)){if("function"!==typeof za)throw Error(u(280));var b=a.stateNode;b&&(b=la(b),za(a.stateNode,a.type,b))}}function Da(a){Aa?Ba?Ba.push(a):Ba=[a]:Aa=a}function Ea(){if(Aa){var a=Aa,b=Ba;Ba=Aa=null;Ca(a);if(b)for(a=0;a<b.length;a++)Ca(b[a])}}function Fa(a,b){return a(b)}function Ga(a,b,c,d,e){return a(b,c,d,e)}function Ha(){}var Ia=Fa,Ja=!1,Ka=!1;function La(){if(null!==Aa||null!==Ba)Ha(),Ea()}
+function Ma(a,b,c){if(Ka)return a(b,c);Ka=!0;try{return Ia(a,b,c)}finally{Ka=!1,La()}}var Na=/^[:A-Z_a-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD][:A-Z_a-z\u00C0-\u00D6\u00D8-\u00F6\u00F8-\u02FF\u0370-\u037D\u037F-\u1FFF\u200C-\u200D\u2070-\u218F\u2C00-\u2FEF\u3001-\uD7FF\uF900-\uFDCF\uFDF0-\uFFFD\-.0-9\u00B7\u0300-\u036F\u203F-\u2040]*$/,Oa=Object.prototype.hasOwnProperty,Pa={},Qa={};
+function Ra(a){if(Oa.call(Qa,a))return!0;if(Oa.call(Pa,a))return!1;if(Na.test(a))return Qa[a]=!0;Pa[a]=!0;return!1}function Sa(a,b,c,d){if(null!==c&&0===c.type)return!1;switch(typeof b){case "function":case "symbol":return!0;case "boolean":if(d)return!1;if(null!==c)return!c.acceptsBooleans;a=a.toLowerCase().slice(0,5);return"data-"!==a&&"aria-"!==a;default:return!1}}
+function Ta(a,b,c,d){if(null===b||"undefined"===typeof b||Sa(a,b,c,d))return!0;if(d)return!1;if(null!==c)switch(c.type){case 3:return!b;case 4:return!1===b;case 5:return isNaN(b);case 6:return isNaN(b)||1>b}return!1}function v(a,b,c,d,e,f){this.acceptsBooleans=2===b||3===b||4===b;this.attributeName=d;this.attributeNamespace=e;this.mustUseProperty=c;this.propertyName=a;this.type=b;this.sanitizeURL=f}var C={};
+"children dangerouslySetInnerHTML defaultValue defaultChecked innerHTML suppressContentEditableWarning suppressHydrationWarning style".split(" ").forEach(function(a){C[a]=new v(a,0,!1,a,null,!1)});[["acceptCharset","accept-charset"],["className","class"],["htmlFor","for"],["httpEquiv","http-equiv"]].forEach(function(a){var b=a[0];C[b]=new v(b,1,!1,a[1],null,!1)});["contentEditable","draggable","spellCheck","value"].forEach(function(a){C[a]=new v(a,2,!1,a.toLowerCase(),null,!1)});
+["autoReverse","externalResourcesRequired","focusable","preserveAlpha"].forEach(function(a){C[a]=new v(a,2,!1,a,null,!1)});"allowFullScreen async autoFocus autoPlay controls default defer disabled disablePictureInPicture formNoValidate hidden loop noModule noValidate open playsInline readOnly required reversed scoped seamless itemScope".split(" ").forEach(function(a){C[a]=new v(a,3,!1,a.toLowerCase(),null,!1)});
+["checked","multiple","muted","selected"].forEach(function(a){C[a]=new v(a,3,!0,a,null,!1)});["capture","download"].forEach(function(a){C[a]=new v(a,4,!1,a,null,!1)});["cols","rows","size","span"].forEach(function(a){C[a]=new v(a,6,!1,a,null,!1)});["rowSpan","start"].forEach(function(a){C[a]=new v(a,5,!1,a.toLowerCase(),null,!1)});var Ua=/[\-:]([a-z])/g;function Va(a){return a[1].toUpperCase()}
+"accent-height alignment-baseline arabic-form baseline-shift cap-height clip-path clip-rule color-interpolation color-interpolation-filters color-profile color-rendering dominant-baseline enable-background fill-opacity fill-rule flood-color flood-opacity font-family font-size font-size-adjust font-stretch font-style font-variant font-weight glyph-name glyph-orientation-horizontal glyph-orientation-vertical horiz-adv-x horiz-origin-x image-rendering letter-spacing lighting-color marker-end marker-mid marker-start overline-position overline-thickness paint-order panose-1 pointer-events rendering-intent shape-rendering stop-color stop-opacity strikethrough-position strikethrough-thickness stroke-dasharray stroke-dashoffset stroke-linecap stroke-linejoin stroke-miterlimit stroke-opacity stroke-width text-anchor text-decoration text-rendering underline-position underline-thickness unicode-bidi unicode-range units-per-em v-alphabetic v-hanging v-ideographic v-mathematical vector-effect vert-adv-y vert-origin-x vert-origin-y word-spacing writing-mode xmlns:xlink x-height".split(" ").forEach(function(a){var b=a.replace(Ua,
+Va);C[b]=new v(b,1,!1,a,null,!1)});"xlink:actuate xlink:arcrole xlink:role xlink:show xlink:title xlink:type".split(" ").forEach(function(a){var b=a.replace(Ua,Va);C[b]=new v(b,1,!1,a,"http://www.w3.org/1999/xlink",!1)});["xml:base","xml:lang","xml:space"].forEach(function(a){var b=a.replace(Ua,Va);C[b]=new v(b,1,!1,a,"http://www.w3.org/XML/1998/namespace",!1)});["tabIndex","crossOrigin"].forEach(function(a){C[a]=new v(a,1,!1,a.toLowerCase(),null,!1)});
+C.xlinkHref=new v("xlinkHref",1,!1,"xlink:href","http://www.w3.org/1999/xlink",!0);["src","href","action","formAction"].forEach(function(a){C[a]=new v(a,1,!1,a.toLowerCase(),null,!0)});var Wa=aa.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;Wa.hasOwnProperty("ReactCurrentDispatcher")||(Wa.ReactCurrentDispatcher={current:null});Wa.hasOwnProperty("ReactCurrentBatchConfig")||(Wa.ReactCurrentBatchConfig={suspense:null});
+function Xa(a,b,c,d){var e=C.hasOwnProperty(b)?C[b]:null;var f=null!==e?0===e.type:d?!1:!(2<b.length)||"o"!==b[0]&&"O"!==b[0]||"n"!==b[1]&&"N"!==b[1]?!1:!0;f||(Ta(b,c,e,d)&&(c=null),d||null===e?Ra(b)&&(null===c?a.removeAttribute(b):a.setAttribute(b,""+c)):e.mustUseProperty?a[e.propertyName]=null===c?3===e.type?!1:"":c:(b=e.attributeName,d=e.attributeNamespace,null===c?a.removeAttribute(b):(e=e.type,c=3===e||4===e&&!0===c?"":""+c,d?a.setAttributeNS(d,b,c):a.setAttribute(b,c))))}
+var Ya=/^(.*)[\\\/]/,E="function"===typeof Symbol&&Symbol.for,Za=E?Symbol.for("react.element"):60103,$a=E?Symbol.for("react.portal"):60106,ab=E?Symbol.for("react.fragment"):60107,bb=E?Symbol.for("react.strict_mode"):60108,cb=E?Symbol.for("react.profiler"):60114,db=E?Symbol.for("react.provider"):60109,eb=E?Symbol.for("react.context"):60110,fb=E?Symbol.for("react.concurrent_mode"):60111,gb=E?Symbol.for("react.forward_ref"):60112,hb=E?Symbol.for("react.suspense"):60113,ib=E?Symbol.for("react.suspense_list"):
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+function pb(a){if(null==a)return null;if("function"===typeof a)return a.displayName||a.name||null;if("string"===typeof a)return a;switch(a){case ab:return"Fragment";case $a:return"Portal";case cb:return"Profiler";case bb:return"StrictMode";case hb:return"Suspense";case ib:return"SuspenseList"}if("object"===typeof a)switch(a.$$typeof){case eb:return"Context.Consumer";case db:return"Context.Provider";case gb:var b=a.render;b=b.displayName||b.name||"";return a.displayName||(""!==b?"ForwardRef("+b+")":
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+function rb(a){switch(typeof a){case "boolean":case "number":case "object":case "string":case "undefined":return a;default:return""}}function sb(a){var b=a.type;return(a=a.nodeName)&&"input"===a.toLowerCase()&&("checkbox"===b||"radio"===b)}
+function tb(a){var b=sb(a)?"checked":"value",c=Object.getOwnPropertyDescriptor(a.constructor.prototype,b),d=""+a[b];if(!a.hasOwnProperty(b)&&"undefined"!==typeof c&&"function"===typeof c.get&&"function"===typeof c.set){var e=c.get,f=c.set;Object.defineProperty(a,b,{configurable:!0,get:function(){return e.call(this)},set:function(a){d=""+a;f.call(this,a)}});Object.defineProperty(a,b,{enumerable:c.enumerable});return{getValue:function(){return d},setValue:function(a){d=""+a},stopTracking:function(){a._valueTracker=
+null;delete a[b]}}}}function xb(a){a._valueTracker||(a._valueTracker=tb(a))}function yb(a){if(!a)return!1;var b=a._valueTracker;if(!b)return!0;var c=b.getValue();var d="";a&&(d=sb(a)?a.checked?"true":"false":a.value);a=d;return a!==c?(b.setValue(a),!0):!1}function zb(a,b){var c=b.checked;return n({},b,{defaultChecked:void 0,defaultValue:void 0,value:void 0,checked:null!=c?c:a._wrapperState.initialChecked})}
+function Ab(a,b){var c=null==b.defaultValue?"":b.defaultValue,d=null!=b.checked?b.checked:b.defaultChecked;c=rb(null!=b.value?b.value:c);a._wrapperState={initialChecked:d,initialValue:c,controlled:"checkbox"===b.type||"radio"===b.type?null!=b.checked:null!=b.value}}function Bb(a,b){b=b.checked;null!=b&&Xa(a,"checked",b,!1)}
+function Cb(a,b){Bb(a,b);var c=rb(b.value),d=b.type;if(null!=c)if("number"===d){if(0===c&&""===a.value||a.value!=c)a.value=""+c}else a.value!==""+c&&(a.value=""+c);else if("submit"===d||"reset"===d){a.removeAttribute("value");return}b.hasOwnProperty("value")?Db(a,b.type,c):b.hasOwnProperty("defaultValue")&&Db(a,b.type,rb(b.defaultValue));null==b.checked&&null!=b.defaultChecked&&(a.defaultChecked=!!b.defaultChecked)}
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diff --git a/igv_component/node_modules/react-dom/cjs/react-dom.profiling.min.js b/igv_component/node_modules/react-dom/cjs/react-dom.profiling.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..a3ba16d2107e1f06c6b2cc3eaeba6b23a3d0e31c
--- /dev/null
+++ b/igv_component/node_modules/react-dom/cjs/react-dom.profiling.min.js
@@ -0,0 +1,299 @@
+/** @license React v16.14.0
+ * react-dom.profiling.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/*
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+*/
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+di(a,b,d,e,c);case 7:return ci(a,b,b.pendingProps,c),b.child;case 8:return ci(a,b,b.pendingProps.children,c),b.child;case 12:return b.effectTag|=4,ci(a,b,b.pendingProps.children,c),b.child;case 10:a:{d=b.type._context;e=b.pendingProps;g=b.memoizedProps;f=e.value;var h=b.type._context;I(hg,h._currentValue);h._currentValue=f;if(null!==g)if(h=g.value,f=Ye(h,f)?0:("function"===typeof d._calculateChangedBits?d._calculateChangedBits(h,f):1073741823)|0,0===f){if(g.children===e.children&&!K.current){b=ei(a,
+b,c);break a}}else for(h=b.child,null!==h&&(h.return=b);null!==h;){var k=h.dependencies;if(null!==k){g=h.child;for(var l=k.firstContext;null!==l;){if(l.context===d&&0!==(l.observedBits&f)){1===h.tag&&(l=ug(c,null),l.tag=2,vg(h,l));h.expirationTime<c&&(h.expirationTime=c);l=h.alternate;null!==l&&l.expirationTime<c&&(l.expirationTime=c);ng(h.return,c);k.expirationTime<c&&(k.expirationTime=c);break}l=l.next}}else g=10===h.tag?h.type===b.type?null:h.child:h.child;if(null!==g)g.return=h;else for(g=h;null!==
+g;){if(g===b){g=null;break}h=g.sibling;if(null!==h){h.return=g.return;g=h;break}g=g.return}h=g}ci(a,b,e.children,c);b=b.child}return b;case 9:return e=b.type,f=b.pendingProps,d=f.children,og(b,c),e=qg(e,f.unstable_observedBits),d=d(e),b.effectTag|=1,ci(a,b,d,c),b.child;case 14:return e=b.type,f=gg(e,b.pendingProps),f=gg(e.type,f),fi(a,b,e,f,d,c);case 15:return hi(a,b,b.type,b.pendingProps,d,c);case 17:return d=b.type,e=b.pendingProps,e=b.elementType===d?e:gg(d,e),null!==a&&(a.alternate=null,b.alternate=
+null,b.effectTag|=2),b.tag=1,M(d)?(a=!0,Ef(b)):a=!1,og(b,c),Jg(b,d,e),Lg(b,d,e,c),li(null,b,d,!0,a,c);case 19:return ri(a,b,c)}throw Error(u(156,b.tag));};function Fi(a){null===Ej?Ej=[a]:Ej.push(a)}function hk(a,b,c){if(0<c.size){var d=a.pendingInteractionMap,e=d.get(b);null!=e?c.forEach(function(a){e.has(a)||a.__count++;e.add(a)}):(d.set(b,new Set(c)),c.forEach(function(a){a.__count++}));d=t.__subscriberRef.current;if(null!==d)d.onWorkScheduled(c,1E3*b+a.interactionThreadID)}}
+function Hj(a,b){hk(a,b,t.__interactionsRef.current)}function Qj(a,b){var c=new Set;a.pendingInteractionMap.forEach(function(a,d){d>=b&&a.forEach(function(a){return c.add(a)})});a.memoizedInteractions=c;if(0<c.size){var d=t.__subscriberRef.current;if(null!==d){a=1E3*b+a.interactionThreadID;try{d.onWorkStarted(c,a)}catch(e){ag(99,function(){throw e;})}}}}
+function ik(a,b){var c=a.firstPendingTime;try{var d=t.__subscriberRef.current;if(null!==d&&0<a.memoizedInteractions.size)d.onWorkStopped(a.memoizedInteractions,1E3*b+a.interactionThreadID)}catch(f){ag(99,function(){throw f;})}finally{var e=a.pendingInteractionMap;e.forEach(function(a,b){b>c&&(e.delete(b),a.forEach(function(a){a.__count--;if(null!==d&&0===a.__count)try{d.onInteractionScheduledWorkCompleted(a)}catch(k){ag(99,function(){throw k;})}}))})}}var jk=null,Si=null,nk="undefined"!==typeof __REACT_DEVTOOLS_GLOBAL_HOOK__;
+function ok(a){if("undefined"===typeof __REACT_DEVTOOLS_GLOBAL_HOOK__)return!1;var b=__REACT_DEVTOOLS_GLOBAL_HOOK__;if(b.isDisabled||!b.supportsFiber)return!0;try{var c=b.inject(a);jk=function(a,e){try{var d=64===(a.current.effectTag&64),g=1073741821-(N()/10|0),h=fg(g,e);b.onCommitFiberRoot(c,a,h,d)}catch(k){}};Si=function(a){try{b.onCommitFiberUnmount(c,a)}catch(e){}}}catch(d){}return!0}
+function pk(a,b,c,d){this.tag=a;this.key=c;this.sibling=this.child=this.return=this.stateNode=this.type=this.elementType=null;this.index=0;this.ref=null;this.pendingProps=b;this.dependencies=this.memoizedState=this.updateQueue=this.memoizedProps=null;this.mode=d;this.effectTag=0;this.lastEffect=this.firstEffect=this.nextEffect=null;this.childExpirationTime=this.expirationTime=0;this.alternate=null;this.actualDuration=0;this.actualStartTime=-1;this.treeBaseDuration=this.selfBaseDuration=0}
+function Wh(a,b,c,d){return new pk(a,b,c,d)}function gi(a){a=a.prototype;return!(!a||!a.isReactComponent)}function mk(a){if("function"===typeof a)return gi(a)?1:0;if(void 0!==a&&null!==a){a=a.$$typeof;if(a===gb)return 11;if(a===jb)return 14}return 2}
+function Qg(a,b){var c=a.alternate;null===c?(c=Wh(a.tag,b,a.key,a.mode),c.elementType=a.elementType,c.type=a.type,c.stateNode=a.stateNode,c.alternate=a,a.alternate=c):(c.pendingProps=b,c.effectTag=0,c.nextEffect=null,c.firstEffect=null,c.lastEffect=null,c.actualDuration=0,c.actualStartTime=-1);c.childExpirationTime=a.childExpirationTime;c.expirationTime=a.expirationTime;c.child=a.child;c.memoizedProps=a.memoizedProps;c.memoizedState=a.memoizedState;c.updateQueue=a.updateQueue;b=a.dependencies;c.dependencies=
+null===b?null:{expirationTime:b.expirationTime,firstContext:b.firstContext,responders:b.responders};c.sibling=a.sibling;c.index=a.index;c.ref=a.ref;c.selfBaseDuration=a.selfBaseDuration;c.treeBaseDuration=a.treeBaseDuration;return c}
+function Sg(a,b,c,d,e,f){var g=2;d=a;if("function"===typeof a)gi(a)&&(g=1);else if("string"===typeof a)g=5;else a:switch(a){case ab:return Ug(c.children,e,f,b);case fb:g=8;e|=7;break;case bb:g=8;e|=1;break;case cb:return a=Wh(12,c,b,e|8),a.elementType=cb,a.type=cb,a.expirationTime=f,a;case hb:return a=Wh(13,c,b,e),a.type=hb,a.elementType=hb,a.expirationTime=f,a;case ib:return a=Wh(19,c,b,e),a.elementType=ib,a.expirationTime=f,a;default:if("object"===typeof a&&null!==a)switch(a.$$typeof){case db:g=
+10;break a;case eb:g=9;break a;case gb:g=11;break a;case jb:g=14;break a;case kb:g=16;d=null;break a;case lb:g=22;break a}throw Error(u(130,null==a?a:typeof a,""));}b=Wh(g,c,b,e);b.elementType=a;b.type=d;b.expirationTime=f;return b}function Ug(a,b,c,d){a=Wh(7,a,d,b);a.expirationTime=c;return a}function Rg(a,b,c){a=Wh(6,a,null,b);a.expirationTime=c;return a}
+function Tg(a,b,c){b=Wh(4,null!==a.children?a.children:[],a.key,b);b.expirationTime=c;b.stateNode={containerInfo:a.containerInfo,pendingChildren:null,implementation:a.implementation};return b}
+function qk(a,b,c){this.tag=b;this.current=null;this.containerInfo=a;this.pingCache=this.pendingChildren=null;this.finishedExpirationTime=0;this.finishedWork=null;this.timeoutHandle=-1;this.pendingContext=this.context=null;this.hydrate=c;this.callbackNode=null;this.callbackPriority=90;this.lastExpiredTime=this.lastPingedTime=this.nextKnownPendingLevel=this.lastSuspendedTime=this.firstSuspendedTime=this.firstPendingTime=0;this.interactionThreadID=t.unstable_getThreadID();this.memoizedInteractions=
+new Set;this.pendingInteractionMap=new Map}function Lj(a,b){var c=a.firstSuspendedTime;a=a.lastSuspendedTime;return 0!==c&&c>=b&&a<=b}function Di(a,b){var c=a.firstSuspendedTime,d=a.lastSuspendedTime;c<b&&(a.firstSuspendedTime=b);if(d>b||0===c)a.lastSuspendedTime=b;b<=a.lastPingedTime&&(a.lastPingedTime=0);b<=a.lastExpiredTime&&(a.lastExpiredTime=0)}
+function Ei(a,b){b>a.firstPendingTime&&(a.firstPendingTime=b);var c=a.firstSuspendedTime;0!==c&&(b>=c?a.firstSuspendedTime=a.lastSuspendedTime=a.nextKnownPendingLevel=0:b>=a.lastSuspendedTime&&(a.lastSuspendedTime=b+1),b>a.nextKnownPendingLevel&&(a.nextKnownPendingLevel=b))}function Nj(a,b){var c=a.lastExpiredTime;if(0===c||c>b)a.lastExpiredTime=b}
+function rk(a,b,c,d){var e=b.current,f=Eg(),g=Bg.suspense;f=Fg(f,e,g);a:if(c){c=c._reactInternalFiber;b:{if(cc(c)!==c||1!==c.tag)throw Error(u(170));var h=c;do{switch(h.tag){case 3:h=h.stateNode.context;break b;case 1:if(M(h.type)){h=h.stateNode.__reactInternalMemoizedMergedChildContext;break b}}h=h.return}while(null!==h);throw Error(u(171));}if(1===c.tag){var k=c.type;if(M(k)){c=Df(c,k,h);break a}}c=h}else c=yf;null===b.context?b.context=c:b.pendingContext=c;b=ug(f,g);b.payload={element:a};d=void 0===
+d?null:d;null!==d&&(b.callback=d);vg(e,b);Gg(e,f);return f}function sk(a){a=a.current;if(!a.child)return null;switch(a.child.tag){case 5:return a.child.stateNode;default:return a.child.stateNode}}function tk(a,b){a=a.memoizedState;null!==a&&null!==a.dehydrated&&a.retryTime<b&&(a.retryTime=b)}function uk(a,b){tk(a,b);(a=a.alternate)&&tk(a,b)}
+function vk(a,b,c){c=null!=c&&!0===c.hydrate;var d=new qk(a,b,c);var e=2===b?7:1===b?3:0;nk&&(e|=8);e=Wh(3,null,null,e);d.current=e;e.stateNode=d;sg(e);a[Md]=d.current;c&&0!==b&&Ic(a,9===a.nodeType?a:a.ownerDocument);this._internalRoot=d}vk.prototype.render=function(a){rk(a,this._internalRoot,null,null)};vk.prototype.unmount=function(){var a=this._internalRoot,b=a.containerInfo;rk(null,a,null,function(){b[Md]=null})};
+function wk(a){return!(!a||1!==a.nodeType&&9!==a.nodeType&&11!==a.nodeType&&(8!==a.nodeType||" react-mount-point-unstable "!==a.nodeValue))}function xk(a,b){b||(b=a?9===a.nodeType?a.documentElement:a.firstChild:null,b=!(!b||1!==b.nodeType||!b.hasAttribute("data-reactroot")));if(!b)for(var c;c=a.lastChild;)a.removeChild(c);return new vk(a,0,b?{hydrate:!0}:void 0)}
+function yk(a,b,c,d,e){var f=c._reactRootContainer;if(f){var g=f._internalRoot;if("function"===typeof e){var h=e;e=function(){var a=sk(g);h.call(a)}}rk(b,g,a,e)}else{f=c._reactRootContainer=xk(c,d);g=f._internalRoot;if("function"===typeof e){var k=e;e=function(){var a=sk(g);k.call(a)}}ak(function(){rk(b,g,a,e)})}return sk(g)}function zk(a,b,c){var d=3<arguments.length&&void 0!==arguments[3]?arguments[3]:null;return{$$typeof:$a,key:null==d?null:""+d,children:a,containerInfo:b,implementation:c}}
+vc=function(a){if(13===a.tag){var b=eg(Eg(),150,100);Gg(a,b);uk(a,b)}};wc=function(a){13===a.tag&&(Gg(a,3),uk(a,3))};xc=function(a){if(13===a.tag){var b=Eg();b=Fg(b,a,null);Gg(a,b);uk(a,b)}};
+za=function(a,b,c){switch(b){case "input":zb(a,c);b=c.name;if("radio"===c.type&&null!=b){for(c=a;c.parentNode;)c=c.parentNode;c=c.querySelectorAll("input[name="+JSON.stringify(""+b)+'][type="radio"]');for(b=0;b<c.length;b++){var d=c[b];if(d!==a&&d.form===a.form){var e=Od(d);if(!e)throw Error(u(90));vb(d);zb(d,e)}}}break;case "textarea":Jb(a,c);break;case "select":b=c.value,null!=b&&Gb(a,!!c.multiple,b,!1)}};Fa=Zj;
+Ga=function(a,b,c,d,e){var f=W;W|=4;try{return $f(98,a.bind(null,b,c,d,e))}finally{W=f,W===V&&dg()}};Ha=function(){(W&(1|mj|nj))===V&&(Yj(),Oj())};Ia=function(a,b){var c=W;W|=2;try{return a(b)}finally{W=c,W===V&&dg()}};function Ak(a,b){var c=2<arguments.length&&void 0!==arguments[2]?arguments[2]:null;if(!wk(b))throw Error(u(200));return zk(a,b,null,c)}var Bk={Events:[Mc,Nd,Od,xa,ta,Vd,function(a){ic(a,Ud)},Da,Ea,gd,lc,Oj,{current:!1}]};
+(function(a){var b=a.findFiberByHostInstance;return ok(n({},a,{overrideHookState:null,overrideProps:null,setSuspenseHandler:null,scheduleUpdate:null,currentDispatcherRef:Wa.ReactCurrentDispatcher,findHostInstanceByFiber:function(a){a=gc(a);return null===a?null:a.stateNode},findFiberByHostInstance:function(a){return b?b(a):null},findHostInstancesForRefresh:null,scheduleRefresh:null,scheduleRoot:null,setRefreshHandler:null,getCurrentFiber:null}))})({findFiberByHostInstance:sc,bundleType:0,version:"16.14.0",
+rendererPackageName:"react-dom"});exports.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED=Bk;exports.createPortal=Ak;exports.findDOMNode=function(a){if(null==a)return null;if(1===a.nodeType)return a;var b=a._reactInternalFiber;if(void 0===b){if("function"===typeof a.render)throw Error(u(188));throw Error(u(268,Object.keys(a)));}a=gc(b);a=null===a?null:a.stateNode;return a};
+exports.flushSync=function(a,b){if((W&(mj|nj))!==V)throw Error(u(187));var c=W;W|=1;try{return $f(99,a.bind(null,b))}finally{W=c,dg()}};exports.hydrate=function(a,b,c){if(!wk(b))throw Error(u(200));return yk(null,a,b,!0,c)};exports.render=function(a,b,c){if(!wk(b))throw Error(u(200));return yk(null,a,b,!1,c)};
+exports.unmountComponentAtNode=function(a){if(!wk(a))throw Error(u(40));return a._reactRootContainer?(ak(function(){yk(null,null,a,!1,function(){a._reactRootContainer=null;a[Md]=null})}),!0):!1};exports.unstable_batchedUpdates=Zj;exports.unstable_createPortal=function(a,b){return Ak(a,b,2<arguments.length&&void 0!==arguments[2]?arguments[2]:null)};
+exports.unstable_renderSubtreeIntoContainer=function(a,b,c,d){if(!wk(c))throw Error(u(200));if(null==a||void 0===a._reactInternalFiber)throw Error(u(38));return yk(a,b,c,!1,d)};exports.version="16.14.0";
diff --git a/igv_component/node_modules/react-dom/index.js b/igv_component/node_modules/react-dom/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..0eb376e9d5c394daedd1edafc021f556d0bf123b
--- /dev/null
+++ b/igv_component/node_modules/react-dom/index.js
@@ -0,0 +1,38 @@
+'use strict';
+
+function checkDCE() {
+  /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */
+  if (
+    typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === 'undefined' ||
+    typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.checkDCE !== 'function'
+  ) {
+    return;
+  }
+  if (process.env.NODE_ENV !== 'production') {
+    // This branch is unreachable because this function is only called
+    // in production, but the condition is true only in development.
+    // Therefore if the branch is still here, dead code elimination wasn't
+    // properly applied.
+    // Don't change the message. React DevTools relies on it. Also make sure
+    // this message doesn't occur elsewhere in this function, or it will cause
+    // a false positive.
+    throw new Error('^_^');
+  }
+  try {
+    // Verify that the code above has been dead code eliminated (DCE'd).
+    __REACT_DEVTOOLS_GLOBAL_HOOK__.checkDCE(checkDCE);
+  } catch (err) {
+    // DevTools shouldn't crash React, no matter what.
+    // We should still report in case we break this code.
+    console.error(err);
+  }
+}
+
+if (process.env.NODE_ENV === 'production') {
+  // DCE check should happen before ReactDOM bundle executes so that
+  // DevTools can report bad minification during injection.
+  checkDCE();
+  module.exports = require('./cjs/react-dom.production.min.js');
+} else {
+  module.exports = require('./cjs/react-dom.development.js');
+}
diff --git a/igv_component/node_modules/react-dom/package.json b/igv_component/node_modules/react-dom/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..b2fb01f82a1a3f18d3b84cba1fef3d18702c55ab
--- /dev/null
+++ b/igv_component/node_modules/react-dom/package.json
@@ -0,0 +1,60 @@
+{
+  "browser": {
+    "./server.js": "./server.browser.js",
+    "./unstable-fizz.js": "./unstable-fizz.browser.js"
+  },
+  "browserify": {
+    "transform": [
+      "loose-envify"
+    ]
+  },
+  "bugs": {
+    "url": "https://github.com/facebook/react/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "loose-envify": "^1.1.0",
+    "object-assign": "^4.1.1",
+    "prop-types": "^15.6.2",
+    "scheduler": "^0.19.1"
+  },
+  "deprecated": false,
+  "description": "React package for working with the DOM.",
+  "files": [
+    "LICENSE",
+    "README.md",
+    "build-info.json",
+    "index.js",
+    "profiling.js",
+    "server.js",
+    "server.browser.js",
+    "server.node.js",
+    "test-utils.js",
+    "unstable-fire.js",
+    "unstable-fizz.js",
+    "unstable-fizz.browser.js",
+    "unstable-fizz.node.js",
+    "unstable-native-dependencies.js",
+    "cjs/",
+    "umd/"
+  ],
+  "homepage": "https://reactjs.org/",
+  "keywords": [
+    "react"
+  ],
+  "license": "MIT",
+  "main": "index.js",
+  "name": "react-dom",
+  "peerDependencies": {
+    "react": "^16.14.0"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/facebook/react.git",
+    "directory": "packages/react-dom"
+  },
+  "scripts": {
+    "start": "node server.js"
+  },
+  "version": "16.14.0"
+}
diff --git a/igv_component/node_modules/react-dom/profiling.js b/igv_component/node_modules/react-dom/profiling.js
new file mode 100644
index 0000000000000000000000000000000000000000..91f89f07ffe130242acba7fd84aff62e3336875a
--- /dev/null
+++ b/igv_component/node_modules/react-dom/profiling.js
@@ -0,0 +1,38 @@
+'use strict';
+
+function checkDCE() {
+  /* global __REACT_DEVTOOLS_GLOBAL_HOOK__ */
+  if (
+    typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === 'undefined' ||
+    typeof __REACT_DEVTOOLS_GLOBAL_HOOK__.checkDCE !== 'function'
+  ) {
+    return;
+  }
+  if (process.env.NODE_ENV !== 'production') {
+    // This branch is unreachable because this function is only called
+    // in production, but the condition is true only in development.
+    // Therefore if the branch is still here, dead code elimination wasn't
+    // properly applied.
+    // Don't change the message. React DevTools relies on it. Also make sure
+    // this message doesn't occur elsewhere in this function, or it will cause
+    // a false positive.
+    throw new Error('^_^');
+  }
+  try {
+    // Verify that the code above has been dead code eliminated (DCE'd).
+    __REACT_DEVTOOLS_GLOBAL_HOOK__.checkDCE(checkDCE);
+  } catch (err) {
+    // DevTools shouldn't crash React, no matter what.
+    // We should still report in case we break this code.
+    console.error(err);
+  }
+}
+
+if (process.env.NODE_ENV === 'production') {
+  // DCE check should happen before ReactDOM bundle executes so that
+  // DevTools can report bad minification during injection.
+  checkDCE();
+  module.exports = require('./cjs/react-dom.profiling.min.js');
+} else {
+  module.exports = require('./cjs/react-dom.development.js');
+}
diff --git a/igv_component/node_modules/react-dom/server.browser.js b/igv_component/node_modules/react-dom/server.browser.js
new file mode 100644
index 0000000000000000000000000000000000000000..32b4953bb35002f13aec7c2ad01456036e27e2d0
--- /dev/null
+++ b/igv_component/node_modules/react-dom/server.browser.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/react-dom-server.browser.production.min.js');
+} else {
+  module.exports = require('./cjs/react-dom-server.browser.development.js');
+}
diff --git a/igv_component/node_modules/react-dom/server.js b/igv_component/node_modules/react-dom/server.js
new file mode 100644
index 0000000000000000000000000000000000000000..02f1553990a22b9d0d1995c994fbb363512fef26
--- /dev/null
+++ b/igv_component/node_modules/react-dom/server.js
@@ -0,0 +1,3 @@
+'use strict';
+
+module.exports = require('./server.node');
diff --git a/igv_component/node_modules/react-dom/server.node.js b/igv_component/node_modules/react-dom/server.node.js
new file mode 100644
index 0000000000000000000000000000000000000000..c45c37af6f37ca71595032e2e91547ea30af7907
--- /dev/null
+++ b/igv_component/node_modules/react-dom/server.node.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/react-dom-server.node.production.min.js');
+} else {
+  module.exports = require('./cjs/react-dom-server.node.development.js');
+}
diff --git a/igv_component/node_modules/react-dom/test-utils.js b/igv_component/node_modules/react-dom/test-utils.js
new file mode 100644
index 0000000000000000000000000000000000000000..bc23ebec478923bc8c23656c04dbee74cc49d9d8
--- /dev/null
+++ b/igv_component/node_modules/react-dom/test-utils.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/react-dom-test-utils.production.min.js');
+} else {
+  module.exports = require('./cjs/react-dom-test-utils.development.js');
+}
diff --git a/igv_component/node_modules/react-dom/umd/react-dom-server.browser.development.js b/igv_component/node_modules/react-dom/umd/react-dom-server.browser.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..3c10dd6619c85a2e0609dda8089e9f46a639bd14
--- /dev/null
+++ b/igv_component/node_modules/react-dom/umd/react-dom-server.browser.development.js
@@ -0,0 +1,4147 @@
+/** @license React v16.14.0
+ * react-dom-server.browser.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('react')) :
+  typeof define === 'function' && define.amd ? define(['react'], factory) :
+  (global = global || self, global.ReactDOMServer = factory(global.React));
+}(this, (function (React) { 'use strict';
+
+  // Do not require this module directly! Use normal `invariant` calls with
+  // template literal strings. The messages will be replaced with error codes
+  // during build.
+  function formatProdErrorMessage(code) {
+    var url = 'https://reactjs.org/docs/error-decoder.html?invariant=' + code;
+
+    for (var i = 1; i < arguments.length; i++) {
+      url += '&args[]=' + encodeURIComponent(arguments[i]);
+    }
+
+    return "Minified React error #" + code + "; visit " + url + " for the full message or " + 'use the non-minified dev environment for full errors and additional ' + 'helpful warnings.';
+  }
+
+  var ReactVersion = '16.14.0';
+
+  var ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED; // Prevent newer renderers from RTE when used with older react package versions.
+  // Current owner and dispatcher used to share the same ref,
+  // but PR #14548 split them out to better support the react-debug-tools package.
+
+  if (!ReactSharedInternals.hasOwnProperty('ReactCurrentDispatcher')) {
+    ReactSharedInternals.ReactCurrentDispatcher = {
+      current: null
+    };
+  }
+
+  if (!ReactSharedInternals.hasOwnProperty('ReactCurrentBatchConfig')) {
+    ReactSharedInternals.ReactCurrentBatchConfig = {
+      suspense: null
+    };
+  }
+
+  // by calls to these methods by a Babel plugin.
+  //
+  // In PROD (or in packages without access to React internals),
+  // they are left as they are instead.
+
+  function warn(format) {
+    {
+      for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+        args[_key - 1] = arguments[_key];
+      }
+
+      printWarning('warn', format, args);
+    }
+  }
+  function error(format) {
+    {
+      for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+        args[_key2 - 1] = arguments[_key2];
+      }
+
+      printWarning('error', format, args);
+    }
+  }
+
+  function printWarning(level, format, args) {
+    // When changing this logic, you might want to also
+    // update consoleWithStackDev.www.js as well.
+    {
+      var hasExistingStack = args.length > 0 && typeof args[args.length - 1] === 'string' && args[args.length - 1].indexOf('\n    in') === 0;
+
+      if (!hasExistingStack) {
+        var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+        var stack = ReactDebugCurrentFrame.getStackAddendum();
+
+        if (stack !== '') {
+          format += '%s';
+          args = args.concat([stack]);
+        }
+      }
+
+      var argsWithFormat = args.map(function (item) {
+        return '' + item;
+      }); // Careful: RN currently depends on this prefix
+
+      argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it
+      // breaks IE9: https://github.com/facebook/react/issues/13610
+      // eslint-disable-next-line react-internal/no-production-logging
+
+      Function.prototype.apply.call(console[level], console, argsWithFormat);
+
+      try {
+        // --- Welcome to debugging React ---
+        // This error was thrown as a convenience so that you can use this stack
+        // to find the callsite that caused this warning to fire.
+        var argIndex = 0;
+        var message = 'Warning: ' + format.replace(/%s/g, function () {
+          return args[argIndex++];
+        });
+        throw new Error(message);
+      } catch (x) {}
+    }
+  }
+
+  var ReactInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;
+  var _assign = ReactInternals.assign;
+
+  // The Symbol used to tag the ReactElement-like types. If there is no native Symbol
+  // nor polyfill, then a plain number is used for performance.
+  var hasSymbol = typeof Symbol === 'function' && Symbol.for;
+  var REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca;
+  var REACT_FRAGMENT_TYPE = hasSymbol ? Symbol.for('react.fragment') : 0xeacb;
+  var REACT_STRICT_MODE_TYPE = hasSymbol ? Symbol.for('react.strict_mode') : 0xeacc;
+  var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for('react.profiler') : 0xead2;
+  var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for('react.provider') : 0xeacd;
+  var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for('react.context') : 0xeace; // TODO: We don't use AsyncMode or ConcurrentMode anymore. They were temporary
+  var REACT_CONCURRENT_MODE_TYPE = hasSymbol ? Symbol.for('react.concurrent_mode') : 0xeacf;
+  var REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for('react.forward_ref') : 0xead0;
+  var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for('react.suspense') : 0xead1;
+  var REACT_SUSPENSE_LIST_TYPE = hasSymbol ? Symbol.for('react.suspense_list') : 0xead8;
+  var REACT_MEMO_TYPE = hasSymbol ? Symbol.for('react.memo') : 0xead3;
+  var REACT_LAZY_TYPE = hasSymbol ? Symbol.for('react.lazy') : 0xead4;
+  var REACT_BLOCK_TYPE = hasSymbol ? Symbol.for('react.block') : 0xead9;
+  var REACT_FUNDAMENTAL_TYPE = hasSymbol ? Symbol.for('react.fundamental') : 0xead5;
+  var REACT_SCOPE_TYPE = hasSymbol ? Symbol.for('react.scope') : 0xead7;
+
+  var Uninitialized = -1;
+  var Pending = 0;
+  var Resolved = 1;
+  var Rejected = 2;
+  function refineResolvedLazyComponent(lazyComponent) {
+    return lazyComponent._status === Resolved ? lazyComponent._result : null;
+  }
+  function initializeLazyComponentType(lazyComponent) {
+    if (lazyComponent._status === Uninitialized) {
+      lazyComponent._status = Pending;
+      var ctor = lazyComponent._ctor;
+      var thenable = ctor();
+      lazyComponent._result = thenable;
+      thenable.then(function (moduleObject) {
+        if (lazyComponent._status === Pending) {
+          var defaultExport = moduleObject.default;
+
+          {
+            if (defaultExport === undefined) {
+              error('lazy: Expected the result of a dynamic import() call. ' + 'Instead received: %s\n\nYour code should look like: \n  ' + "const MyComponent = lazy(() => import('./MyComponent'))", moduleObject);
+            }
+          }
+
+          lazyComponent._status = Resolved;
+          lazyComponent._result = defaultExport;
+        }
+      }, function (error) {
+        if (lazyComponent._status === Pending) {
+          lazyComponent._status = Rejected;
+          lazyComponent._result = error;
+        }
+      });
+    }
+  }
+
+  function getWrappedName(outerType, innerType, wrapperName) {
+    var functionName = innerType.displayName || innerType.name || '';
+    return outerType.displayName || (functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName);
+  }
+
+  function getComponentName(type) {
+    if (type == null) {
+      // Host root, text node or just invalid type.
+      return null;
+    }
+
+    {
+      if (typeof type.tag === 'number') {
+        error('Received an unexpected object in getComponentName(). ' + 'This is likely a bug in React. Please file an issue.');
+      }
+    }
+
+    if (typeof type === 'function') {
+      return type.displayName || type.name || null;
+    }
+
+    if (typeof type === 'string') {
+      return type;
+    }
+
+    switch (type) {
+      case REACT_FRAGMENT_TYPE:
+        return 'Fragment';
+
+      case REACT_PORTAL_TYPE:
+        return 'Portal';
+
+      case REACT_PROFILER_TYPE:
+        return "Profiler";
+
+      case REACT_STRICT_MODE_TYPE:
+        return 'StrictMode';
+
+      case REACT_SUSPENSE_TYPE:
+        return 'Suspense';
+
+      case REACT_SUSPENSE_LIST_TYPE:
+        return 'SuspenseList';
+    }
+
+    if (typeof type === 'object') {
+      switch (type.$$typeof) {
+        case REACT_CONTEXT_TYPE:
+          return 'Context.Consumer';
+
+        case REACT_PROVIDER_TYPE:
+          return 'Context.Provider';
+
+        case REACT_FORWARD_REF_TYPE:
+          return getWrappedName(type, type.render, 'ForwardRef');
+
+        case REACT_MEMO_TYPE:
+          return getComponentName(type.type);
+
+        case REACT_BLOCK_TYPE:
+          return getComponentName(type.render);
+
+        case REACT_LAZY_TYPE:
+          {
+            var thenable = type;
+            var resolvedThenable = refineResolvedLazyComponent(thenable);
+
+            if (resolvedThenable) {
+              return getComponentName(resolvedThenable);
+            }
+
+            break;
+          }
+      }
+    }
+
+    return null;
+  }
+
+  var BEFORE_SLASH_RE = /^(.*)[\\\/]/;
+  function describeComponentFrame (name, source, ownerName) {
+    var sourceInfo = '';
+
+    if (source) {
+      var path = source.fileName;
+      var fileName = path.replace(BEFORE_SLASH_RE, '');
+
+      {
+        // In DEV, include code for a common special case:
+        // prefer "folder/index.js" instead of just "index.js".
+        if (/^index\./.test(fileName)) {
+          var match = path.match(BEFORE_SLASH_RE);
+
+          if (match) {
+            var pathBeforeSlash = match[1];
+
+            if (pathBeforeSlash) {
+              var folderName = pathBeforeSlash.replace(BEFORE_SLASH_RE, '');
+              fileName = folderName + '/' + fileName;
+            }
+          }
+        }
+      }
+
+      sourceInfo = ' (at ' + fileName + ':' + source.lineNumber + ')';
+    } else if (ownerName) {
+      sourceInfo = ' (created by ' + ownerName + ')';
+    }
+
+    return '\n    in ' + (name || 'Unknown') + sourceInfo;
+  }
+
+  var enableSuspenseServerRenderer = false;
+
+  var enableDeprecatedFlareAPI = false; // Experimental Host Component support.
+
+  /**
+   * Copyright (c) 2013-present, Facebook, Inc.
+   *
+   * This source code is licensed under the MIT license found in the
+   * LICENSE file in the root directory of this source tree.
+   */
+
+  var ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';
+
+  var ReactPropTypesSecret_1 = ReactPropTypesSecret;
+
+  var printWarning$1 = function() {};
+
+  {
+    var ReactPropTypesSecret$1 = ReactPropTypesSecret_1;
+    var loggedTypeFailures = {};
+    var has = Function.call.bind(Object.prototype.hasOwnProperty);
+
+    printWarning$1 = function(text) {
+      var message = 'Warning: ' + text;
+      if (typeof console !== 'undefined') {
+        console.error(message);
+      }
+      try {
+        // --- Welcome to debugging React ---
+        // This error was thrown as a convenience so that you can use this stack
+        // to find the callsite that caused this warning to fire.
+        throw new Error(message);
+      } catch (x) {}
+    };
+  }
+
+  /**
+   * Assert that the values match with the type specs.
+   * Error messages are memorized and will only be shown once.
+   *
+   * @param {object} typeSpecs Map of name to a ReactPropType
+   * @param {object} values Runtime values that need to be type-checked
+   * @param {string} location e.g. "prop", "context", "child context"
+   * @param {string} componentName Name of the component for error messages.
+   * @param {?Function} getStack Returns the component stack.
+   * @private
+   */
+  function checkPropTypes(typeSpecs, values, location, componentName, getStack) {
+    {
+      for (var typeSpecName in typeSpecs) {
+        if (has(typeSpecs, typeSpecName)) {
+          var error;
+          // Prop type validation may throw. In case they do, we don't want to
+          // fail the render phase where it didn't fail before. So we log it.
+          // After these have been cleaned up, we'll let them throw.
+          try {
+            // This is intentionally an invariant that gets caught. It's the same
+            // behavior as without this statement except with a better message.
+            if (typeof typeSpecs[typeSpecName] !== 'function') {
+              var err = Error(
+                (componentName || 'React class') + ': ' + location + ' type `' + typeSpecName + '` is invalid; ' +
+                'it must be a function, usually from the `prop-types` package, but received `' + typeof typeSpecs[typeSpecName] + '`.'
+              );
+              err.name = 'Invariant Violation';
+              throw err;
+            }
+            error = typeSpecs[typeSpecName](values, typeSpecName, componentName, location, null, ReactPropTypesSecret$1);
+          } catch (ex) {
+            error = ex;
+          }
+          if (error && !(error instanceof Error)) {
+            printWarning$1(
+              (componentName || 'React class') + ': type specification of ' +
+              location + ' `' + typeSpecName + '` is invalid; the type checker ' +
+              'function must return `null` or an `Error` but returned a ' + typeof error + '. ' +
+              'You may have forgotten to pass an argument to the type checker ' +
+              'creator (arrayOf, instanceOf, objectOf, oneOf, oneOfType, and ' +
+              'shape all require an argument).'
+            );
+          }
+          if (error instanceof Error && !(error.message in loggedTypeFailures)) {
+            // Only monitor this failure once because there tends to be a lot of the
+            // same error.
+            loggedTypeFailures[error.message] = true;
+
+            var stack = getStack ? getStack() : '';
+
+            printWarning$1(
+              'Failed ' + location + ' type: ' + error.message + (stack != null ? stack : '')
+            );
+          }
+        }
+      }
+    }
+  }
+
+  /**
+   * Resets warning cache when testing.
+   *
+   * @private
+   */
+  checkPropTypes.resetWarningCache = function() {
+    {
+      loggedTypeFailures = {};
+    }
+  };
+
+  var checkPropTypes_1 = checkPropTypes;
+
+  var ReactDebugCurrentFrame;
+  var didWarnAboutInvalidateContextType;
+
+  {
+    ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+    didWarnAboutInvalidateContextType = new Set();
+  }
+
+  var emptyObject = {};
+
+  {
+    Object.freeze(emptyObject);
+  }
+
+  function maskContext(type, context) {
+    var contextTypes = type.contextTypes;
+
+    if (!contextTypes) {
+      return emptyObject;
+    }
+
+    var maskedContext = {};
+
+    for (var contextName in contextTypes) {
+      maskedContext[contextName] = context[contextName];
+    }
+
+    return maskedContext;
+  }
+
+  function checkContextTypes(typeSpecs, values, location) {
+    {
+      checkPropTypes_1(typeSpecs, values, location, 'Component', ReactDebugCurrentFrame.getCurrentStack);
+    }
+  }
+
+  function validateContextBounds(context, threadID) {
+    // If we don't have enough slots in this context to store this threadID,
+    // fill it in without leaving any holes to ensure that the VM optimizes
+    // this as non-holey index properties.
+    // (Note: If `react` package is < 16.6, _threadCount is undefined.)
+    for (var i = context._threadCount | 0; i <= threadID; i++) {
+      // We assume that this is the same as the defaultValue which might not be
+      // true if we're rendering inside a secondary renderer but they are
+      // secondary because these use cases are very rare.
+      context[i] = context._currentValue2;
+      context._threadCount = i + 1;
+    }
+  }
+  function processContext(type, context, threadID, isClass) {
+    if (isClass) {
+      var contextType = type.contextType;
+
+      {
+        if ('contextType' in type) {
+          var isValid = // Allow null for conditional declaration
+          contextType === null || contextType !== undefined && contextType.$$typeof === REACT_CONTEXT_TYPE && contextType._context === undefined; // Not a <Context.Consumer>
+
+          if (!isValid && !didWarnAboutInvalidateContextType.has(type)) {
+            didWarnAboutInvalidateContextType.add(type);
+            var addendum = '';
+
+            if (contextType === undefined) {
+              addendum = ' However, it is set to undefined. ' + 'This can be caused by a typo or by mixing up named and default imports. ' + 'This can also happen due to a circular dependency, so ' + 'try moving the createContext() call to a separate file.';
+            } else if (typeof contextType !== 'object') {
+              addendum = ' However, it is set to a ' + typeof contextType + '.';
+            } else if (contextType.$$typeof === REACT_PROVIDER_TYPE) {
+              addendum = ' Did you accidentally pass the Context.Provider instead?';
+            } else if (contextType._context !== undefined) {
+              // <Context.Consumer>
+              addendum = ' Did you accidentally pass the Context.Consumer instead?';
+            } else {
+              addendum = ' However, it is set to an object with keys {' + Object.keys(contextType).join(', ') + '}.';
+            }
+
+            error('%s defines an invalid contextType. ' + 'contextType should point to the Context object returned by React.createContext().%s', getComponentName(type) || 'Component', addendum);
+          }
+        }
+      }
+
+      if (typeof contextType === 'object' && contextType !== null) {
+        validateContextBounds(contextType, threadID);
+        return contextType[threadID];
+      }
+
+      {
+        var maskedContext = maskContext(type, context);
+
+        {
+          if (type.contextTypes) {
+            checkContextTypes(type.contextTypes, maskedContext, 'context');
+          }
+        }
+
+        return maskedContext;
+      }
+    } else {
+      {
+        var _maskedContext = maskContext(type, context);
+
+        {
+          if (type.contextTypes) {
+            checkContextTypes(type.contextTypes, _maskedContext, 'context');
+          }
+        }
+
+        return _maskedContext;
+      }
+    }
+  }
+
+  var nextAvailableThreadIDs = new Uint16Array(16);
+
+  for (var i = 0; i < 15; i++) {
+    nextAvailableThreadIDs[i] = i + 1;
+  }
+
+  nextAvailableThreadIDs[15] = 0;
+
+  function growThreadCountAndReturnNextAvailable() {
+    var oldArray = nextAvailableThreadIDs;
+    var oldSize = oldArray.length;
+    var newSize = oldSize * 2;
+
+    if (!(newSize <= 0x10000)) {
+      {
+        throw Error( "Maximum number of concurrent React renderers exceeded. This can happen if you are not properly destroying the Readable provided by React. Ensure that you call .destroy() on it if you no longer want to read from it, and did not read to the end. If you use .pipe() this should be automatic." );
+      }
+    }
+
+    var newArray = new Uint16Array(newSize);
+    newArray.set(oldArray);
+    nextAvailableThreadIDs = newArray;
+    nextAvailableThreadIDs[0] = oldSize + 1;
+
+    for (var _i = oldSize; _i < newSize - 1; _i++) {
+      nextAvailableThreadIDs[_i] = _i + 1;
+    }
+
+    nextAvailableThreadIDs[newSize - 1] = 0;
+    return oldSize;
+  }
+
+  function allocThreadID() {
+    var nextID = nextAvailableThreadIDs[0];
+
+    if (nextID === 0) {
+      return growThreadCountAndReturnNextAvailable();
+    }
+
+    nextAvailableThreadIDs[0] = nextAvailableThreadIDs[nextID];
+    return nextID;
+  }
+  function freeThreadID(id) {
+    nextAvailableThreadIDs[id] = nextAvailableThreadIDs[0];
+    nextAvailableThreadIDs[0] = id;
+  }
+
+  // A reserved attribute.
+  // It is handled by React separately and shouldn't be written to the DOM.
+  var RESERVED = 0; // A simple string attribute.
+  // Attributes that aren't in the whitelist are presumed to have this type.
+
+  var STRING = 1; // A string attribute that accepts booleans in React. In HTML, these are called
+  // "enumerated" attributes with "true" and "false" as possible values.
+  // When true, it should be set to a "true" string.
+  // When false, it should be set to a "false" string.
+
+  var BOOLEANISH_STRING = 2; // A real boolean attribute.
+  // When true, it should be present (set either to an empty string or its name).
+  // When false, it should be omitted.
+
+  var BOOLEAN = 3; // An attribute that can be used as a flag as well as with a value.
+  // When true, it should be present (set either to an empty string or its name).
+  // When false, it should be omitted.
+  // For any other value, should be present with that value.
+
+  var OVERLOADED_BOOLEAN = 4; // An attribute that must be numeric or parse as a numeric.
+  // When falsy, it should be removed.
+
+  var NUMERIC = 5; // An attribute that must be positive numeric or parse as a positive numeric.
+  // When falsy, it should be removed.
+
+  var POSITIVE_NUMERIC = 6;
+
+  /* eslint-disable max-len */
+  var ATTRIBUTE_NAME_START_CHAR = ":A-Z_a-z\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u02FF\\u0370-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD";
+  /* eslint-enable max-len */
+
+  var ATTRIBUTE_NAME_CHAR = ATTRIBUTE_NAME_START_CHAR + "\\-.0-9\\u00B7\\u0300-\\u036F\\u203F-\\u2040";
+  var ROOT_ATTRIBUTE_NAME = 'data-reactroot';
+  var VALID_ATTRIBUTE_NAME_REGEX = new RegExp('^[' + ATTRIBUTE_NAME_START_CHAR + '][' + ATTRIBUTE_NAME_CHAR + ']*$');
+  var hasOwnProperty = Object.prototype.hasOwnProperty;
+  var illegalAttributeNameCache = {};
+  var validatedAttributeNameCache = {};
+  function isAttributeNameSafe(attributeName) {
+    if (hasOwnProperty.call(validatedAttributeNameCache, attributeName)) {
+      return true;
+    }
+
+    if (hasOwnProperty.call(illegalAttributeNameCache, attributeName)) {
+      return false;
+    }
+
+    if (VALID_ATTRIBUTE_NAME_REGEX.test(attributeName)) {
+      validatedAttributeNameCache[attributeName] = true;
+      return true;
+    }
+
+    illegalAttributeNameCache[attributeName] = true;
+
+    {
+      error('Invalid attribute name: `%s`', attributeName);
+    }
+
+    return false;
+  }
+  function shouldIgnoreAttribute(name, propertyInfo, isCustomComponentTag) {
+    if (propertyInfo !== null) {
+      return propertyInfo.type === RESERVED;
+    }
+
+    if (isCustomComponentTag) {
+      return false;
+    }
+
+    if (name.length > 2 && (name[0] === 'o' || name[0] === 'O') && (name[1] === 'n' || name[1] === 'N')) {
+      return true;
+    }
+
+    return false;
+  }
+  function shouldRemoveAttributeWithWarning(name, value, propertyInfo, isCustomComponentTag) {
+    if (propertyInfo !== null && propertyInfo.type === RESERVED) {
+      return false;
+    }
+
+    switch (typeof value) {
+      case 'function': // $FlowIssue symbol is perfectly valid here
+
+      case 'symbol':
+        // eslint-disable-line
+        return true;
+
+      case 'boolean':
+        {
+          if (isCustomComponentTag) {
+            return false;
+          }
+
+          if (propertyInfo !== null) {
+            return !propertyInfo.acceptsBooleans;
+          } else {
+            var prefix = name.toLowerCase().slice(0, 5);
+            return prefix !== 'data-' && prefix !== 'aria-';
+          }
+        }
+
+      default:
+        return false;
+    }
+  }
+  function shouldRemoveAttribute(name, value, propertyInfo, isCustomComponentTag) {
+    if (value === null || typeof value === 'undefined') {
+      return true;
+    }
+
+    if (shouldRemoveAttributeWithWarning(name, value, propertyInfo, isCustomComponentTag)) {
+      return true;
+    }
+
+    if (isCustomComponentTag) {
+      return false;
+    }
+
+    if (propertyInfo !== null) {
+      switch (propertyInfo.type) {
+        case BOOLEAN:
+          return !value;
+
+        case OVERLOADED_BOOLEAN:
+          return value === false;
+
+        case NUMERIC:
+          return isNaN(value);
+
+        case POSITIVE_NUMERIC:
+          return isNaN(value) || value < 1;
+      }
+    }
+
+    return false;
+  }
+  function getPropertyInfo(name) {
+    return properties.hasOwnProperty(name) ? properties[name] : null;
+  }
+
+  function PropertyInfoRecord(name, type, mustUseProperty, attributeName, attributeNamespace, sanitizeURL) {
+    this.acceptsBooleans = type === BOOLEANISH_STRING || type === BOOLEAN || type === OVERLOADED_BOOLEAN;
+    this.attributeName = attributeName;
+    this.attributeNamespace = attributeNamespace;
+    this.mustUseProperty = mustUseProperty;
+    this.propertyName = name;
+    this.type = type;
+    this.sanitizeURL = sanitizeURL;
+  } // When adding attributes to this list, be sure to also add them to
+  // the `possibleStandardNames` module to ensure casing and incorrect
+  // name warnings.
+
+
+  var properties = {}; // These props are reserved by React. They shouldn't be written to the DOM.
+
+  var reservedProps = ['children', 'dangerouslySetInnerHTML', // TODO: This prevents the assignment of defaultValue to regular
+  // elements (not just inputs). Now that ReactDOMInput assigns to the
+  // defaultValue property -- do we need this?
+  'defaultValue', 'defaultChecked', 'innerHTML', 'suppressContentEditableWarning', 'suppressHydrationWarning', 'style'];
+
+  reservedProps.forEach(function (name) {
+    properties[name] = new PropertyInfoRecord(name, RESERVED, false, // mustUseProperty
+    name, // attributeName
+    null, // attributeNamespace
+    false);
+  }); // A few React string attributes have a different name.
+  // This is a mapping from React prop names to the attribute names.
+
+  [['acceptCharset', 'accept-charset'], ['className', 'class'], ['htmlFor', 'for'], ['httpEquiv', 'http-equiv']].forEach(function (_ref) {
+    var name = _ref[0],
+        attributeName = _ref[1];
+    properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+    attributeName, // attributeName
+    null, // attributeNamespace
+    false);
+  }); // These are "enumerated" HTML attributes that accept "true" and "false".
+  // In React, we let users pass `true` and `false` even though technically
+  // these aren't boolean attributes (they are coerced to strings).
+
+  ['contentEditable', 'draggable', 'spellCheck', 'value'].forEach(function (name) {
+    properties[name] = new PropertyInfoRecord(name, BOOLEANISH_STRING, false, // mustUseProperty
+    name.toLowerCase(), // attributeName
+    null, // attributeNamespace
+    false);
+  }); // These are "enumerated" SVG attributes that accept "true" and "false".
+  // In React, we let users pass `true` and `false` even though technically
+  // these aren't boolean attributes (they are coerced to strings).
+  // Since these are SVG attributes, their attribute names are case-sensitive.
+
+  ['autoReverse', 'externalResourcesRequired', 'focusable', 'preserveAlpha'].forEach(function (name) {
+    properties[name] = new PropertyInfoRecord(name, BOOLEANISH_STRING, false, // mustUseProperty
+    name, // attributeName
+    null, // attributeNamespace
+    false);
+  }); // These are HTML boolean attributes.
+
+  ['allowFullScreen', 'async', // Note: there is a special case that prevents it from being written to the DOM
+  // on the client side because the browsers are inconsistent. Instead we call focus().
+  'autoFocus', 'autoPlay', 'controls', 'default', 'defer', 'disabled', 'disablePictureInPicture', 'formNoValidate', 'hidden', 'loop', 'noModule', 'noValidate', 'open', 'playsInline', 'readOnly', 'required', 'reversed', 'scoped', 'seamless', // Microdata
+  'itemScope'].forEach(function (name) {
+    properties[name] = new PropertyInfoRecord(name, BOOLEAN, false, // mustUseProperty
+    name.toLowerCase(), // attributeName
+    null, // attributeNamespace
+    false);
+  }); // These are the few React props that we set as DOM properties
+  // rather than attributes. These are all booleans.
+
+  ['checked', // Note: `option.selected` is not updated if `select.multiple` is
+  // disabled with `removeAttribute`. We have special logic for handling this.
+  'multiple', 'muted', 'selected' // NOTE: if you add a camelCased prop to this list,
+  // you'll need to set attributeName to name.toLowerCase()
+  // instead in the assignment below.
+  ].forEach(function (name) {
+    properties[name] = new PropertyInfoRecord(name, BOOLEAN, true, // mustUseProperty
+    name, // attributeName
+    null, // attributeNamespace
+    false);
+  }); // These are HTML attributes that are "overloaded booleans": they behave like
+  // booleans, but can also accept a string value.
+
+  ['capture', 'download' // NOTE: if you add a camelCased prop to this list,
+  // you'll need to set attributeName to name.toLowerCase()
+  // instead in the assignment below.
+  ].forEach(function (name) {
+    properties[name] = new PropertyInfoRecord(name, OVERLOADED_BOOLEAN, false, // mustUseProperty
+    name, // attributeName
+    null, // attributeNamespace
+    false);
+  }); // These are HTML attributes that must be positive numbers.
+
+  ['cols', 'rows', 'size', 'span' // NOTE: if you add a camelCased prop to this list,
+  // you'll need to set attributeName to name.toLowerCase()
+  // instead in the assignment below.
+  ].forEach(function (name) {
+    properties[name] = new PropertyInfoRecord(name, POSITIVE_NUMERIC, false, // mustUseProperty
+    name, // attributeName
+    null, // attributeNamespace
+    false);
+  }); // These are HTML attributes that must be numbers.
+
+  ['rowSpan', 'start'].forEach(function (name) {
+    properties[name] = new PropertyInfoRecord(name, NUMERIC, false, // mustUseProperty
+    name.toLowerCase(), // attributeName
+    null, // attributeNamespace
+    false);
+  });
+  var CAMELIZE = /[\-\:]([a-z])/g;
+
+  var capitalize = function (token) {
+    return token[1].toUpperCase();
+  }; // This is a list of all SVG attributes that need special casing, namespacing,
+  // or boolean value assignment. Regular attributes that just accept strings
+  // and have the same names are omitted, just like in the HTML whitelist.
+  // Some of these attributes can be hard to find. This list was created by
+  // scraping the MDN documentation.
+
+
+  ['accent-height', 'alignment-baseline', 'arabic-form', 'baseline-shift', 'cap-height', 'clip-path', 'clip-rule', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'dominant-baseline', 'enable-background', 'fill-opacity', 'fill-rule', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'glyph-name', 'glyph-orientation-horizontal', 'glyph-orientation-vertical', 'horiz-adv-x', 'horiz-origin-x', 'image-rendering', 'letter-spacing', 'lighting-color', 'marker-end', 'marker-mid', 'marker-start', 'overline-position', 'overline-thickness', 'paint-order', 'panose-1', 'pointer-events', 'rendering-intent', 'shape-rendering', 'stop-color', 'stop-opacity', 'strikethrough-position', 'strikethrough-thickness', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'text-anchor', 'text-decoration', 'text-rendering', 'underline-position', 'underline-thickness', 'unicode-bidi', 'unicode-range', 'units-per-em', 'v-alphabetic', 'v-hanging', 'v-ideographic', 'v-mathematical', 'vector-effect', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'word-spacing', 'writing-mode', 'xmlns:xlink', 'x-height' // NOTE: if you add a camelCased prop to this list,
+  // you'll need to set attributeName to name.toLowerCase()
+  // instead in the assignment below.
+  ].forEach(function (attributeName) {
+    var name = attributeName.replace(CAMELIZE, capitalize);
+    properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+    attributeName, null, // attributeNamespace
+    false);
+  }); // String SVG attributes with the xlink namespace.
+
+  ['xlink:actuate', 'xlink:arcrole', 'xlink:role', 'xlink:show', 'xlink:title', 'xlink:type' // NOTE: if you add a camelCased prop to this list,
+  // you'll need to set attributeName to name.toLowerCase()
+  // instead in the assignment below.
+  ].forEach(function (attributeName) {
+    var name = attributeName.replace(CAMELIZE, capitalize);
+    properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+    attributeName, 'http://www.w3.org/1999/xlink', false);
+  }); // String SVG attributes with the xml namespace.
+
+  ['xml:base', 'xml:lang', 'xml:space' // NOTE: if you add a camelCased prop to this list,
+  // you'll need to set attributeName to name.toLowerCase()
+  // instead in the assignment below.
+  ].forEach(function (attributeName) {
+    var name = attributeName.replace(CAMELIZE, capitalize);
+    properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+    attributeName, 'http://www.w3.org/XML/1998/namespace', false);
+  }); // These attribute exists both in HTML and SVG.
+  // The attribute name is case-sensitive in SVG so we can't just use
+  // the React name like we do for attributes that exist only in HTML.
+
+  ['tabIndex', 'crossOrigin'].forEach(function (attributeName) {
+    properties[attributeName] = new PropertyInfoRecord(attributeName, STRING, false, // mustUseProperty
+    attributeName.toLowerCase(), // attributeName
+    null, // attributeNamespace
+    false);
+  }); // These attributes accept URLs. These must not allow javascript: URLS.
+  // These will also need to accept Trusted Types object in the future.
+
+  var xlinkHref = 'xlinkHref';
+  properties[xlinkHref] = new PropertyInfoRecord('xlinkHref', STRING, false, // mustUseProperty
+  'xlink:href', 'http://www.w3.org/1999/xlink', true);
+  ['src', 'href', 'action', 'formAction'].forEach(function (attributeName) {
+    properties[attributeName] = new PropertyInfoRecord(attributeName, STRING, false, // mustUseProperty
+    attributeName.toLowerCase(), // attributeName
+    null, // attributeNamespace
+    true);
+  });
+
+  var ReactDebugCurrentFrame$1 = null;
+
+  {
+    ReactDebugCurrentFrame$1 = ReactSharedInternals.ReactDebugCurrentFrame;
+  } // A javascript: URL can contain leading C0 control or \u0020 SPACE,
+  // and any newline or tab are filtered out as if they're not part of the URL.
+  // https://url.spec.whatwg.org/#url-parsing
+  // Tab or newline are defined as \r\n\t:
+  // https://infra.spec.whatwg.org/#ascii-tab-or-newline
+  // A C0 control is a code point in the range \u0000 NULL to \u001F
+  // INFORMATION SEPARATOR ONE, inclusive:
+  // https://infra.spec.whatwg.org/#c0-control-or-space
+
+  /* eslint-disable max-len */
+
+
+  var isJavaScriptProtocol = /^[\u0000-\u001F ]*j[\r\n\t]*a[\r\n\t]*v[\r\n\t]*a[\r\n\t]*s[\r\n\t]*c[\r\n\t]*r[\r\n\t]*i[\r\n\t]*p[\r\n\t]*t[\r\n\t]*\:/i;
+  var didWarn = false;
+
+  function sanitizeURL(url) {
+    {
+      if (!didWarn && isJavaScriptProtocol.test(url)) {
+        didWarn = true;
+
+        error('A future version of React will block javascript: URLs as a security precaution. ' + 'Use event handlers instead if you can. If you need to generate unsafe HTML try ' + 'using dangerouslySetInnerHTML instead. React was passed %s.', JSON.stringify(url));
+      }
+    }
+  }
+
+  // code copied and modified from escape-html
+
+  /**
+   * Module variables.
+   * @private
+   */
+  var matchHtmlRegExp = /["'&<>]/;
+  /**
+   * Escapes special characters and HTML entities in a given html string.
+   *
+   * @param  {string} string HTML string to escape for later insertion
+   * @return {string}
+   * @public
+   */
+
+  function escapeHtml(string) {
+    var str = '' + string;
+    var match = matchHtmlRegExp.exec(str);
+
+    if (!match) {
+      return str;
+    }
+
+    var escape;
+    var html = '';
+    var index;
+    var lastIndex = 0;
+
+    for (index = match.index; index < str.length; index++) {
+      switch (str.charCodeAt(index)) {
+        case 34:
+          // "
+          escape = '&quot;';
+          break;
+
+        case 38:
+          // &
+          escape = '&amp;';
+          break;
+
+        case 39:
+          // '
+          escape = '&#x27;'; // modified from escape-html; used to be '&#39'
+
+          break;
+
+        case 60:
+          // <
+          escape = '&lt;';
+          break;
+
+        case 62:
+          // >
+          escape = '&gt;';
+          break;
+
+        default:
+          continue;
+      }
+
+      if (lastIndex !== index) {
+        html += str.substring(lastIndex, index);
+      }
+
+      lastIndex = index + 1;
+      html += escape;
+    }
+
+    return lastIndex !== index ? html + str.substring(lastIndex, index) : html;
+  } // end code copied and modified from escape-html
+
+  /**
+   * Escapes text to prevent scripting attacks.
+   *
+   * @param {*} text Text value to escape.
+   * @return {string} An escaped string.
+   */
+
+
+  function escapeTextForBrowser(text) {
+    if (typeof text === 'boolean' || typeof text === 'number') {
+      // this shortcircuit helps perf for types that we know will never have
+      // special characters, especially given that this function is used often
+      // for numeric dom ids.
+      return '' + text;
+    }
+
+    return escapeHtml(text);
+  }
+
+  /**
+   * Escapes attribute value to prevent scripting attacks.
+   *
+   * @param {*} value Value to escape.
+   * @return {string} An escaped string.
+   */
+
+  function quoteAttributeValueForBrowser(value) {
+    return '"' + escapeTextForBrowser(value) + '"';
+  }
+
+  function createMarkupForRoot() {
+    return ROOT_ATTRIBUTE_NAME + '=""';
+  }
+  /**
+   * Creates markup for a property.
+   *
+   * @param {string} name
+   * @param {*} value
+   * @return {?string} Markup string, or null if the property was invalid.
+   */
+
+  function createMarkupForProperty(name, value) {
+    var propertyInfo = getPropertyInfo(name);
+
+    if (name !== 'style' && shouldIgnoreAttribute(name, propertyInfo, false)) {
+      return '';
+    }
+
+    if (shouldRemoveAttribute(name, value, propertyInfo, false)) {
+      return '';
+    }
+
+    if (propertyInfo !== null) {
+      var attributeName = propertyInfo.attributeName;
+      var type = propertyInfo.type;
+
+      if (type === BOOLEAN || type === OVERLOADED_BOOLEAN && value === true) {
+        return attributeName + '=""';
+      } else {
+        if (propertyInfo.sanitizeURL) {
+          value = '' + value;
+          sanitizeURL(value);
+        }
+
+        return attributeName + '=' + quoteAttributeValueForBrowser(value);
+      }
+    } else if (isAttributeNameSafe(name)) {
+      return name + '=' + quoteAttributeValueForBrowser(value);
+    }
+
+    return '';
+  }
+  /**
+   * Creates markup for a custom property.
+   *
+   * @param {string} name
+   * @param {*} value
+   * @return {string} Markup string, or empty string if the property was invalid.
+   */
+
+  function createMarkupForCustomAttribute(name, value) {
+    if (!isAttributeNameSafe(name) || value == null) {
+      return '';
+    }
+
+    return name + '=' + quoteAttributeValueForBrowser(value);
+  }
+
+  /**
+   * inlined Object.is polyfill to avoid requiring consumers ship their own
+   * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
+   */
+  function is(x, y) {
+    return x === y && (x !== 0 || 1 / x === 1 / y) || x !== x && y !== y // eslint-disable-line no-self-compare
+    ;
+  }
+
+  var objectIs = typeof Object.is === 'function' ? Object.is : is;
+
+  var currentlyRenderingComponent = null;
+  var firstWorkInProgressHook = null;
+  var workInProgressHook = null; // Whether the work-in-progress hook is a re-rendered hook
+
+  var isReRender = false; // Whether an update was scheduled during the currently executing render pass.
+
+  var didScheduleRenderPhaseUpdate = false; // Lazily created map of render-phase updates
+
+  var renderPhaseUpdates = null; // Counter to prevent infinite loops.
+
+  var numberOfReRenders = 0;
+  var RE_RENDER_LIMIT = 25;
+  var isInHookUserCodeInDev = false; // In DEV, this is the name of the currently executing primitive hook
+
+  var currentHookNameInDev;
+
+  function resolveCurrentlyRenderingComponent() {
+    if (!(currentlyRenderingComponent !== null)) {
+      {
+        throw Error( "Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons:\n1. You might have mismatching versions of React and the renderer (such as React DOM)\n2. You might be breaking the Rules of Hooks\n3. You might have more than one copy of React in the same app\nSee https://fb.me/react-invalid-hook-call for tips about how to debug and fix this problem." );
+      }
+    }
+
+    {
+      if (isInHookUserCodeInDev) {
+        error('Do not call Hooks inside useEffect(...), useMemo(...), or other built-in Hooks. ' + 'You can only call Hooks at the top level of your React function. ' + 'For more information, see ' + 'https://fb.me/rules-of-hooks');
+      }
+    }
+
+    return currentlyRenderingComponent;
+  }
+
+  function areHookInputsEqual(nextDeps, prevDeps) {
+    if (prevDeps === null) {
+      {
+        error('%s received a final argument during this render, but not during ' + 'the previous render. Even though the final argument is optional, ' + 'its type cannot change between renders.', currentHookNameInDev);
+      }
+
+      return false;
+    }
+
+    {
+      // Don't bother comparing lengths in prod because these arrays should be
+      // passed inline.
+      if (nextDeps.length !== prevDeps.length) {
+        error('The final argument passed to %s changed size between renders. The ' + 'order and size of this array must remain constant.\n\n' + 'Previous: %s\n' + 'Incoming: %s', currentHookNameInDev, "[" + nextDeps.join(', ') + "]", "[" + prevDeps.join(', ') + "]");
+      }
+    }
+
+    for (var i = 0; i < prevDeps.length && i < nextDeps.length; i++) {
+      if (objectIs(nextDeps[i], prevDeps[i])) {
+        continue;
+      }
+
+      return false;
+    }
+
+    return true;
+  }
+
+  function createHook() {
+    if (numberOfReRenders > 0) {
+      {
+        {
+          throw Error( "Rendered more hooks than during the previous render" );
+        }
+      }
+    }
+
+    return {
+      memoizedState: null,
+      queue: null,
+      next: null
+    };
+  }
+
+  function createWorkInProgressHook() {
+    if (workInProgressHook === null) {
+      // This is the first hook in the list
+      if (firstWorkInProgressHook === null) {
+        isReRender = false;
+        firstWorkInProgressHook = workInProgressHook = createHook();
+      } else {
+        // There's already a work-in-progress. Reuse it.
+        isReRender = true;
+        workInProgressHook = firstWorkInProgressHook;
+      }
+    } else {
+      if (workInProgressHook.next === null) {
+        isReRender = false; // Append to the end of the list
+
+        workInProgressHook = workInProgressHook.next = createHook();
+      } else {
+        // There's already a work-in-progress. Reuse it.
+        isReRender = true;
+        workInProgressHook = workInProgressHook.next;
+      }
+    }
+
+    return workInProgressHook;
+  }
+
+  function prepareToUseHooks(componentIdentity) {
+    currentlyRenderingComponent = componentIdentity;
+
+    {
+      isInHookUserCodeInDev = false;
+    } // The following should have already been reset
+    // didScheduleRenderPhaseUpdate = false;
+    // firstWorkInProgressHook = null;
+    // numberOfReRenders = 0;
+    // renderPhaseUpdates = null;
+    // workInProgressHook = null;
+
+  }
+  function finishHooks(Component, props, children, refOrContext) {
+    // This must be called after every function component to prevent hooks from
+    // being used in classes.
+    while (didScheduleRenderPhaseUpdate) {
+      // Updates were scheduled during the render phase. They are stored in
+      // the `renderPhaseUpdates` map. Call the component again, reusing the
+      // work-in-progress hooks and applying the additional updates on top. Keep
+      // restarting until no more updates are scheduled.
+      didScheduleRenderPhaseUpdate = false;
+      numberOfReRenders += 1; // Start over from the beginning of the list
+
+      workInProgressHook = null;
+      children = Component(props, refOrContext);
+    }
+
+    currentlyRenderingComponent = null;
+    firstWorkInProgressHook = null;
+    numberOfReRenders = 0;
+    renderPhaseUpdates = null;
+    workInProgressHook = null;
+
+    {
+      isInHookUserCodeInDev = false;
+    } // These were reset above
+    // currentlyRenderingComponent = null;
+    // didScheduleRenderPhaseUpdate = false;
+    // firstWorkInProgressHook = null;
+    // numberOfReRenders = 0;
+    // renderPhaseUpdates = null;
+    // workInProgressHook = null;
+
+
+    return children;
+  }
+
+  function readContext(context, observedBits) {
+    var threadID = currentThreadID;
+    validateContextBounds(context, threadID);
+
+    {
+      if (isInHookUserCodeInDev) {
+        error('Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().');
+      }
+    }
+
+    return context[threadID];
+  }
+
+  function useContext(context, observedBits) {
+    {
+      currentHookNameInDev = 'useContext';
+    }
+
+    resolveCurrentlyRenderingComponent();
+    var threadID = currentThreadID;
+    validateContextBounds(context, threadID);
+    return context[threadID];
+  }
+
+  function basicStateReducer(state, action) {
+    // $FlowFixMe: Flow doesn't like mixed types
+    return typeof action === 'function' ? action(state) : action;
+  }
+
+  function useState(initialState) {
+    {
+      currentHookNameInDev = 'useState';
+    }
+
+    return useReducer(basicStateReducer, // useReducer has a special case to support lazy useState initializers
+    initialState);
+  }
+  function useReducer(reducer, initialArg, init) {
+    {
+      if (reducer !== basicStateReducer) {
+        currentHookNameInDev = 'useReducer';
+      }
+    }
+
+    currentlyRenderingComponent = resolveCurrentlyRenderingComponent();
+    workInProgressHook = createWorkInProgressHook();
+
+    if (isReRender) {
+      // This is a re-render. Apply the new render phase updates to the previous
+      // current hook.
+      var queue = workInProgressHook.queue;
+      var dispatch = queue.dispatch;
+
+      if (renderPhaseUpdates !== null) {
+        // Render phase updates are stored in a map of queue -> linked list
+        var firstRenderPhaseUpdate = renderPhaseUpdates.get(queue);
+
+        if (firstRenderPhaseUpdate !== undefined) {
+          renderPhaseUpdates.delete(queue);
+          var newState = workInProgressHook.memoizedState;
+          var update = firstRenderPhaseUpdate;
+
+          do {
+            // Process this render phase update. We don't have to check the
+            // priority because it will always be the same as the current
+            // render's.
+            var action = update.action;
+
+            {
+              isInHookUserCodeInDev = true;
+            }
+
+            newState = reducer(newState, action);
+
+            {
+              isInHookUserCodeInDev = false;
+            }
+
+            update = update.next;
+          } while (update !== null);
+
+          workInProgressHook.memoizedState = newState;
+          return [newState, dispatch];
+        }
+      }
+
+      return [workInProgressHook.memoizedState, dispatch];
+    } else {
+      {
+        isInHookUserCodeInDev = true;
+      }
+
+      var initialState;
+
+      if (reducer === basicStateReducer) {
+        // Special case for `useState`.
+        initialState = typeof initialArg === 'function' ? initialArg() : initialArg;
+      } else {
+        initialState = init !== undefined ? init(initialArg) : initialArg;
+      }
+
+      {
+        isInHookUserCodeInDev = false;
+      }
+
+      workInProgressHook.memoizedState = initialState;
+
+      var _queue = workInProgressHook.queue = {
+        last: null,
+        dispatch: null
+      };
+
+      var _dispatch = _queue.dispatch = dispatchAction.bind(null, currentlyRenderingComponent, _queue);
+
+      return [workInProgressHook.memoizedState, _dispatch];
+    }
+  }
+
+  function useMemo(nextCreate, deps) {
+    currentlyRenderingComponent = resolveCurrentlyRenderingComponent();
+    workInProgressHook = createWorkInProgressHook();
+    var nextDeps = deps === undefined ? null : deps;
+
+    if (workInProgressHook !== null) {
+      var prevState = workInProgressHook.memoizedState;
+
+      if (prevState !== null) {
+        if (nextDeps !== null) {
+          var prevDeps = prevState[1];
+
+          if (areHookInputsEqual(nextDeps, prevDeps)) {
+            return prevState[0];
+          }
+        }
+      }
+    }
+
+    {
+      isInHookUserCodeInDev = true;
+    }
+
+    var nextValue = nextCreate();
+
+    {
+      isInHookUserCodeInDev = false;
+    }
+
+    workInProgressHook.memoizedState = [nextValue, nextDeps];
+    return nextValue;
+  }
+
+  function useRef(initialValue) {
+    currentlyRenderingComponent = resolveCurrentlyRenderingComponent();
+    workInProgressHook = createWorkInProgressHook();
+    var previousRef = workInProgressHook.memoizedState;
+
+    if (previousRef === null) {
+      var ref = {
+        current: initialValue
+      };
+
+      {
+        Object.seal(ref);
+      }
+
+      workInProgressHook.memoizedState = ref;
+      return ref;
+    } else {
+      return previousRef;
+    }
+  }
+
+  function useLayoutEffect(create, inputs) {
+    {
+      currentHookNameInDev = 'useLayoutEffect';
+
+      error('useLayoutEffect does nothing on the server, because its effect cannot ' + "be encoded into the server renderer's output format. This will lead " + 'to a mismatch between the initial, non-hydrated UI and the intended ' + 'UI. To avoid this, useLayoutEffect should only be used in ' + 'components that render exclusively on the client. ' + 'See https://fb.me/react-uselayouteffect-ssr for common fixes.');
+    }
+  }
+
+  function dispatchAction(componentIdentity, queue, action) {
+    if (!(numberOfReRenders < RE_RENDER_LIMIT)) {
+      {
+        throw Error( "Too many re-renders. React limits the number of renders to prevent an infinite loop." );
+      }
+    }
+
+    if (componentIdentity === currentlyRenderingComponent) {
+      // This is a render phase update. Stash it in a lazily-created map of
+      // queue -> linked list of updates. After this render pass, we'll restart
+      // and apply the stashed updates on top of the work-in-progress hook.
+      didScheduleRenderPhaseUpdate = true;
+      var update = {
+        action: action,
+        next: null
+      };
+
+      if (renderPhaseUpdates === null) {
+        renderPhaseUpdates = new Map();
+      }
+
+      var firstRenderPhaseUpdate = renderPhaseUpdates.get(queue);
+
+      if (firstRenderPhaseUpdate === undefined) {
+        renderPhaseUpdates.set(queue, update);
+      } else {
+        // Append the update to the end of the list.
+        var lastRenderPhaseUpdate = firstRenderPhaseUpdate;
+
+        while (lastRenderPhaseUpdate.next !== null) {
+          lastRenderPhaseUpdate = lastRenderPhaseUpdate.next;
+        }
+
+        lastRenderPhaseUpdate.next = update;
+      }
+    }
+  }
+
+  function useCallback(callback, deps) {
+    // Callbacks are passed as they are in the server environment.
+    return callback;
+  }
+
+  function useResponder(responder, props) {
+    return {
+      props: props,
+      responder: responder
+    };
+  }
+
+  function useDeferredValue(value, config) {
+    resolveCurrentlyRenderingComponent();
+    return value;
+  }
+
+  function useTransition(config) {
+    resolveCurrentlyRenderingComponent();
+
+    var startTransition = function (callback) {
+      callback();
+    };
+
+    return [startTransition, false];
+  }
+
+  function noop() {}
+
+  var currentThreadID = 0;
+  function setCurrentThreadID(threadID) {
+    currentThreadID = threadID;
+  }
+  var Dispatcher = {
+    readContext: readContext,
+    useContext: useContext,
+    useMemo: useMemo,
+    useReducer: useReducer,
+    useRef: useRef,
+    useState: useState,
+    useLayoutEffect: useLayoutEffect,
+    useCallback: useCallback,
+    // useImperativeHandle is not run in the server environment
+    useImperativeHandle: noop,
+    // Effects are not run in the server environment.
+    useEffect: noop,
+    // Debugging effect
+    useDebugValue: noop,
+    useResponder: useResponder,
+    useDeferredValue: useDeferredValue,
+    useTransition: useTransition
+  };
+
+  var HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';
+  var MATH_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';
+  var SVG_NAMESPACE = 'http://www.w3.org/2000/svg';
+  var Namespaces = {
+    html: HTML_NAMESPACE,
+    mathml: MATH_NAMESPACE,
+    svg: SVG_NAMESPACE
+  }; // Assumes there is no parent namespace.
+
+  function getIntrinsicNamespace(type) {
+    switch (type) {
+      case 'svg':
+        return SVG_NAMESPACE;
+
+      case 'math':
+        return MATH_NAMESPACE;
+
+      default:
+        return HTML_NAMESPACE;
+    }
+  }
+  function getChildNamespace(parentNamespace, type) {
+    if (parentNamespace == null || parentNamespace === HTML_NAMESPACE) {
+      // No (or default) parent namespace: potential entry point.
+      return getIntrinsicNamespace(type);
+    }
+
+    if (parentNamespace === SVG_NAMESPACE && type === 'foreignObject') {
+      // We're leaving SVG.
+      return HTML_NAMESPACE;
+    } // By default, pass namespace below.
+
+
+    return parentNamespace;
+  }
+
+  var ReactDebugCurrentFrame$2 = null;
+  var ReactControlledValuePropTypes = {
+    checkPropTypes: null
+  };
+
+  {
+    ReactDebugCurrentFrame$2 = ReactSharedInternals.ReactDebugCurrentFrame;
+    var hasReadOnlyValue = {
+      button: true,
+      checkbox: true,
+      image: true,
+      hidden: true,
+      radio: true,
+      reset: true,
+      submit: true
+    };
+    var propTypes = {
+      value: function (props, propName, componentName) {
+        if (hasReadOnlyValue[props.type] || props.onChange || props.readOnly || props.disabled || props[propName] == null || enableDeprecatedFlareAPI ) {
+          return null;
+        }
+
+        return new Error('You provided a `value` prop to a form field without an ' + '`onChange` handler. This will render a read-only field. If ' + 'the field should be mutable use `defaultValue`. Otherwise, ' + 'set either `onChange` or `readOnly`.');
+      },
+      checked: function (props, propName, componentName) {
+        if (props.onChange || props.readOnly || props.disabled || props[propName] == null || enableDeprecatedFlareAPI ) {
+          return null;
+        }
+
+        return new Error('You provided a `checked` prop to a form field without an ' + '`onChange` handler. This will render a read-only field. If ' + 'the field should be mutable use `defaultChecked`. Otherwise, ' + 'set either `onChange` or `readOnly`.');
+      }
+    };
+    /**
+     * Provide a linked `value` attribute for controlled forms. You should not use
+     * this outside of the ReactDOM controlled form components.
+     */
+
+    ReactControlledValuePropTypes.checkPropTypes = function (tagName, props) {
+      checkPropTypes_1(propTypes, props, 'prop', tagName, ReactDebugCurrentFrame$2.getStackAddendum);
+    };
+  }
+
+  // For HTML, certain tags should omit their close tag. We keep a whitelist for
+  // those special-case tags.
+  var omittedCloseTags = {
+    area: true,
+    base: true,
+    br: true,
+    col: true,
+    embed: true,
+    hr: true,
+    img: true,
+    input: true,
+    keygen: true,
+    link: true,
+    meta: true,
+    param: true,
+    source: true,
+    track: true,
+    wbr: true // NOTE: menuitem's close tag should be omitted, but that causes problems.
+
+  };
+
+  // `omittedCloseTags` except that `menuitem` should still have its closing tag.
+
+  var voidElementTags = _assign({
+    menuitem: true
+  }, omittedCloseTags);
+
+  var HTML = '__html';
+  var ReactDebugCurrentFrame$3 = null;
+
+  {
+    ReactDebugCurrentFrame$3 = ReactSharedInternals.ReactDebugCurrentFrame;
+  }
+
+  function assertValidProps(tag, props) {
+    if (!props) {
+      return;
+    } // Note the use of `==` which checks for null or undefined.
+
+
+    if (voidElementTags[tag]) {
+      if (!(props.children == null && props.dangerouslySetInnerHTML == null)) {
+        {
+          throw Error( tag + " is a void element tag and must neither have `children` nor use `dangerouslySetInnerHTML`." + ( ReactDebugCurrentFrame$3.getStackAddendum() ) );
+        }
+      }
+    }
+
+    if (props.dangerouslySetInnerHTML != null) {
+      if (!(props.children == null)) {
+        {
+          throw Error( "Can only set one of `children` or `props.dangerouslySetInnerHTML`." );
+        }
+      }
+
+      if (!(typeof props.dangerouslySetInnerHTML === 'object' && HTML in props.dangerouslySetInnerHTML)) {
+        {
+          throw Error( "`props.dangerouslySetInnerHTML` must be in the form `{__html: ...}`. Please visit https://fb.me/react-invariant-dangerously-set-inner-html for more information." );
+        }
+      }
+    }
+
+    {
+      if (!props.suppressContentEditableWarning && props.contentEditable && props.children != null) {
+        error('A component is `contentEditable` and contains `children` managed by ' + 'React. It is now your responsibility to guarantee that none of ' + 'those nodes are unexpectedly modified or duplicated. This is ' + 'probably not intentional.');
+      }
+    }
+
+    if (!(props.style == null || typeof props.style === 'object')) {
+      {
+        throw Error( "The `style` prop expects a mapping from style properties to values, not a string. For example, style={{marginRight: spacing + 'em'}} when using JSX." + ( ReactDebugCurrentFrame$3.getStackAddendum() ) );
+      }
+    }
+  }
+
+  /**
+   * CSS properties which accept numbers but are not in units of "px".
+   */
+  var isUnitlessNumber = {
+    animationIterationCount: true,
+    borderImageOutset: true,
+    borderImageSlice: true,
+    borderImageWidth: true,
+    boxFlex: true,
+    boxFlexGroup: true,
+    boxOrdinalGroup: true,
+    columnCount: true,
+    columns: true,
+    flex: true,
+    flexGrow: true,
+    flexPositive: true,
+    flexShrink: true,
+    flexNegative: true,
+    flexOrder: true,
+    gridArea: true,
+    gridRow: true,
+    gridRowEnd: true,
+    gridRowSpan: true,
+    gridRowStart: true,
+    gridColumn: true,
+    gridColumnEnd: true,
+    gridColumnSpan: true,
+    gridColumnStart: true,
+    fontWeight: true,
+    lineClamp: true,
+    lineHeight: true,
+    opacity: true,
+    order: true,
+    orphans: true,
+    tabSize: true,
+    widows: true,
+    zIndex: true,
+    zoom: true,
+    // SVG-related properties
+    fillOpacity: true,
+    floodOpacity: true,
+    stopOpacity: true,
+    strokeDasharray: true,
+    strokeDashoffset: true,
+    strokeMiterlimit: true,
+    strokeOpacity: true,
+    strokeWidth: true
+  };
+  /**
+   * @param {string} prefix vendor-specific prefix, eg: Webkit
+   * @param {string} key style name, eg: transitionDuration
+   * @return {string} style name prefixed with `prefix`, properly camelCased, eg:
+   * WebkitTransitionDuration
+   */
+
+  function prefixKey(prefix, key) {
+    return prefix + key.charAt(0).toUpperCase() + key.substring(1);
+  }
+  /**
+   * Support style names that may come passed in prefixed by adding permutations
+   * of vendor prefixes.
+   */
+
+
+  var prefixes = ['Webkit', 'ms', 'Moz', 'O']; // Using Object.keys here, or else the vanilla for-in loop makes IE8 go into an
+  // infinite loop, because it iterates over the newly added props too.
+
+  Object.keys(isUnitlessNumber).forEach(function (prop) {
+    prefixes.forEach(function (prefix) {
+      isUnitlessNumber[prefixKey(prefix, prop)] = isUnitlessNumber[prop];
+    });
+  });
+
+  /**
+   * Convert a value into the proper css writable value. The style name `name`
+   * should be logical (no hyphens), as specified
+   * in `CSSProperty.isUnitlessNumber`.
+   *
+   * @param {string} name CSS property name such as `topMargin`.
+   * @param {*} value CSS property value such as `10px`.
+   * @return {string} Normalized style value with dimensions applied.
+   */
+
+  function dangerousStyleValue(name, value, isCustomProperty) {
+    // Note that we've removed escapeTextForBrowser() calls here since the
+    // whole string will be escaped when the attribute is injected into
+    // the markup. If you provide unsafe user data here they can inject
+    // arbitrary CSS which may be problematic (I couldn't repro this):
+    // https://www.owasp.org/index.php/XSS_Filter_Evasion_Cheat_Sheet
+    // http://www.thespanner.co.uk/2007/11/26/ultimate-xss-css-injection/
+    // This is not an XSS hole but instead a potential CSS injection issue
+    // which has lead to a greater discussion about how we're going to
+    // trust URLs moving forward. See #2115901
+    var isEmpty = value == null || typeof value === 'boolean' || value === '';
+
+    if (isEmpty) {
+      return '';
+    }
+
+    if (!isCustomProperty && typeof value === 'number' && value !== 0 && !(isUnitlessNumber.hasOwnProperty(name) && isUnitlessNumber[name])) {
+      return value + 'px'; // Presumes implicit 'px' suffix for unitless numbers
+    }
+
+    return ('' + value).trim();
+  }
+
+  var uppercasePattern = /([A-Z])/g;
+  var msPattern = /^ms-/;
+  /**
+   * Hyphenates a camelcased CSS property name, for example:
+   *
+   *   > hyphenateStyleName('backgroundColor')
+   *   < "background-color"
+   *   > hyphenateStyleName('MozTransition')
+   *   < "-moz-transition"
+   *   > hyphenateStyleName('msTransition')
+   *   < "-ms-transition"
+   *
+   * As Modernizr suggests (http://modernizr.com/docs/#prefixed), an `ms` prefix
+   * is converted to `-ms-`.
+   */
+
+  function hyphenateStyleName(name) {
+    return name.replace(uppercasePattern, '-$1').toLowerCase().replace(msPattern, '-ms-');
+  }
+
+  function isCustomComponent(tagName, props) {
+    if (tagName.indexOf('-') === -1) {
+      return typeof props.is === 'string';
+    }
+
+    switch (tagName) {
+      // These are reserved SVG and MathML elements.
+      // We don't mind this whitelist too much because we expect it to never grow.
+      // The alternative is to track the namespace in a few places which is convoluted.
+      // https://w3c.github.io/webcomponents/spec/custom/#custom-elements-core-concepts
+      case 'annotation-xml':
+      case 'color-profile':
+      case 'font-face':
+      case 'font-face-src':
+      case 'font-face-uri':
+      case 'font-face-format':
+      case 'font-face-name':
+      case 'missing-glyph':
+        return false;
+
+      default:
+        return true;
+    }
+  }
+
+  var warnValidStyle = function () {};
+
+  {
+    // 'msTransform' is correct, but the other prefixes should be capitalized
+    var badVendoredStyleNamePattern = /^(?:webkit|moz|o)[A-Z]/;
+    var msPattern$1 = /^-ms-/;
+    var hyphenPattern = /-(.)/g; // style values shouldn't contain a semicolon
+
+    var badStyleValueWithSemicolonPattern = /;\s*$/;
+    var warnedStyleNames = {};
+    var warnedStyleValues = {};
+    var warnedForNaNValue = false;
+    var warnedForInfinityValue = false;
+
+    var camelize = function (string) {
+      return string.replace(hyphenPattern, function (_, character) {
+        return character.toUpperCase();
+      });
+    };
+
+    var warnHyphenatedStyleName = function (name) {
+      if (warnedStyleNames.hasOwnProperty(name) && warnedStyleNames[name]) {
+        return;
+      }
+
+      warnedStyleNames[name] = true;
+
+      error('Unsupported style property %s. Did you mean %s?', name, // As Andi Smith suggests
+      // (http://www.andismith.com/blog/2012/02/modernizr-prefixed/), an `-ms` prefix
+      // is converted to lowercase `ms`.
+      camelize(name.replace(msPattern$1, 'ms-')));
+    };
+
+    var warnBadVendoredStyleName = function (name) {
+      if (warnedStyleNames.hasOwnProperty(name) && warnedStyleNames[name]) {
+        return;
+      }
+
+      warnedStyleNames[name] = true;
+
+      error('Unsupported vendor-prefixed style property %s. Did you mean %s?', name, name.charAt(0).toUpperCase() + name.slice(1));
+    };
+
+    var warnStyleValueWithSemicolon = function (name, value) {
+      if (warnedStyleValues.hasOwnProperty(value) && warnedStyleValues[value]) {
+        return;
+      }
+
+      warnedStyleValues[value] = true;
+
+      error("Style property values shouldn't contain a semicolon. " + 'Try "%s: %s" instead.', name, value.replace(badStyleValueWithSemicolonPattern, ''));
+    };
+
+    var warnStyleValueIsNaN = function (name, value) {
+      if (warnedForNaNValue) {
+        return;
+      }
+
+      warnedForNaNValue = true;
+
+      error('`NaN` is an invalid value for the `%s` css style property.', name);
+    };
+
+    var warnStyleValueIsInfinity = function (name, value) {
+      if (warnedForInfinityValue) {
+        return;
+      }
+
+      warnedForInfinityValue = true;
+
+      error('`Infinity` is an invalid value for the `%s` css style property.', name);
+    };
+
+    warnValidStyle = function (name, value) {
+      if (name.indexOf('-') > -1) {
+        warnHyphenatedStyleName(name);
+      } else if (badVendoredStyleNamePattern.test(name)) {
+        warnBadVendoredStyleName(name);
+      } else if (badStyleValueWithSemicolonPattern.test(value)) {
+        warnStyleValueWithSemicolon(name, value);
+      }
+
+      if (typeof value === 'number') {
+        if (isNaN(value)) {
+          warnStyleValueIsNaN(name, value);
+        } else if (!isFinite(value)) {
+          warnStyleValueIsInfinity(name, value);
+        }
+      }
+    };
+  }
+
+  var warnValidStyle$1 = warnValidStyle;
+
+  var ariaProperties = {
+    'aria-current': 0,
+    // state
+    'aria-details': 0,
+    'aria-disabled': 0,
+    // state
+    'aria-hidden': 0,
+    // state
+    'aria-invalid': 0,
+    // state
+    'aria-keyshortcuts': 0,
+    'aria-label': 0,
+    'aria-roledescription': 0,
+    // Widget Attributes
+    'aria-autocomplete': 0,
+    'aria-checked': 0,
+    'aria-expanded': 0,
+    'aria-haspopup': 0,
+    'aria-level': 0,
+    'aria-modal': 0,
+    'aria-multiline': 0,
+    'aria-multiselectable': 0,
+    'aria-orientation': 0,
+    'aria-placeholder': 0,
+    'aria-pressed': 0,
+    'aria-readonly': 0,
+    'aria-required': 0,
+    'aria-selected': 0,
+    'aria-sort': 0,
+    'aria-valuemax': 0,
+    'aria-valuemin': 0,
+    'aria-valuenow': 0,
+    'aria-valuetext': 0,
+    // Live Region Attributes
+    'aria-atomic': 0,
+    'aria-busy': 0,
+    'aria-live': 0,
+    'aria-relevant': 0,
+    // Drag-and-Drop Attributes
+    'aria-dropeffect': 0,
+    'aria-grabbed': 0,
+    // Relationship Attributes
+    'aria-activedescendant': 0,
+    'aria-colcount': 0,
+    'aria-colindex': 0,
+    'aria-colspan': 0,
+    'aria-controls': 0,
+    'aria-describedby': 0,
+    'aria-errormessage': 0,
+    'aria-flowto': 0,
+    'aria-labelledby': 0,
+    'aria-owns': 0,
+    'aria-posinset': 0,
+    'aria-rowcount': 0,
+    'aria-rowindex': 0,
+    'aria-rowspan': 0,
+    'aria-setsize': 0
+  };
+
+  var warnedProperties = {};
+  var rARIA = new RegExp('^(aria)-[' + ATTRIBUTE_NAME_CHAR + ']*$');
+  var rARIACamel = new RegExp('^(aria)[A-Z][' + ATTRIBUTE_NAME_CHAR + ']*$');
+  var hasOwnProperty$1 = Object.prototype.hasOwnProperty;
+
+  function validateProperty(tagName, name) {
+    {
+      if (hasOwnProperty$1.call(warnedProperties, name) && warnedProperties[name]) {
+        return true;
+      }
+
+      if (rARIACamel.test(name)) {
+        var ariaName = 'aria-' + name.slice(4).toLowerCase();
+        var correctName = ariaProperties.hasOwnProperty(ariaName) ? ariaName : null; // If this is an aria-* attribute, but is not listed in the known DOM
+        // DOM properties, then it is an invalid aria-* attribute.
+
+        if (correctName == null) {
+          error('Invalid ARIA attribute `%s`. ARIA attributes follow the pattern aria-* and must be lowercase.', name);
+
+          warnedProperties[name] = true;
+          return true;
+        } // aria-* attributes should be lowercase; suggest the lowercase version.
+
+
+        if (name !== correctName) {
+          error('Invalid ARIA attribute `%s`. Did you mean `%s`?', name, correctName);
+
+          warnedProperties[name] = true;
+          return true;
+        }
+      }
+
+      if (rARIA.test(name)) {
+        var lowerCasedName = name.toLowerCase();
+        var standardName = ariaProperties.hasOwnProperty(lowerCasedName) ? lowerCasedName : null; // If this is an aria-* attribute, but is not listed in the known DOM
+        // DOM properties, then it is an invalid aria-* attribute.
+
+        if (standardName == null) {
+          warnedProperties[name] = true;
+          return false;
+        } // aria-* attributes should be lowercase; suggest the lowercase version.
+
+
+        if (name !== standardName) {
+          error('Unknown ARIA attribute `%s`. Did you mean `%s`?', name, standardName);
+
+          warnedProperties[name] = true;
+          return true;
+        }
+      }
+    }
+
+    return true;
+  }
+
+  function warnInvalidARIAProps(type, props) {
+    {
+      var invalidProps = [];
+
+      for (var key in props) {
+        var isValid = validateProperty(type, key);
+
+        if (!isValid) {
+          invalidProps.push(key);
+        }
+      }
+
+      var unknownPropString = invalidProps.map(function (prop) {
+        return '`' + prop + '`';
+      }).join(', ');
+
+      if (invalidProps.length === 1) {
+        error('Invalid aria prop %s on <%s> tag. ' + 'For details, see https://fb.me/invalid-aria-prop', unknownPropString, type);
+      } else if (invalidProps.length > 1) {
+        error('Invalid aria props %s on <%s> tag. ' + 'For details, see https://fb.me/invalid-aria-prop', unknownPropString, type);
+      }
+    }
+  }
+
+  function validateProperties(type, props) {
+    if (isCustomComponent(type, props)) {
+      return;
+    }
+
+    warnInvalidARIAProps(type, props);
+  }
+
+  var didWarnValueNull = false;
+  function validateProperties$1(type, props) {
+    {
+      if (type !== 'input' && type !== 'textarea' && type !== 'select') {
+        return;
+      }
+
+      if (props != null && props.value === null && !didWarnValueNull) {
+        didWarnValueNull = true;
+
+        if (type === 'select' && props.multiple) {
+          error('`value` prop on `%s` should not be null. ' + 'Consider using an empty array when `multiple` is set to `true` ' + 'to clear the component or `undefined` for uncontrolled components.', type);
+        } else {
+          error('`value` prop on `%s` should not be null. ' + 'Consider using an empty string to clear the component or `undefined` ' + 'for uncontrolled components.', type);
+        }
+      }
+    }
+  }
+
+  /**
+   * Mapping from registration name to plugin module
+   */
+
+  var registrationNameModules = {};
+  /**
+   * Mapping from lowercase registration names to the properly cased version,
+   * used to warn in the case of missing event handlers. Available
+   * only in true.
+   * @type {Object}
+   */
+
+  var possibleRegistrationNames =  {} ; // Trust the developer to only use possibleRegistrationNames in true
+
+  // When adding attributes to the HTML or SVG whitelist, be sure to
+  // also add them to this module to ensure casing and incorrect name
+  // warnings.
+  var possibleStandardNames = {
+    // HTML
+    accept: 'accept',
+    acceptcharset: 'acceptCharset',
+    'accept-charset': 'acceptCharset',
+    accesskey: 'accessKey',
+    action: 'action',
+    allowfullscreen: 'allowFullScreen',
+    alt: 'alt',
+    as: 'as',
+    async: 'async',
+    autocapitalize: 'autoCapitalize',
+    autocomplete: 'autoComplete',
+    autocorrect: 'autoCorrect',
+    autofocus: 'autoFocus',
+    autoplay: 'autoPlay',
+    autosave: 'autoSave',
+    capture: 'capture',
+    cellpadding: 'cellPadding',
+    cellspacing: 'cellSpacing',
+    challenge: 'challenge',
+    charset: 'charSet',
+    checked: 'checked',
+    children: 'children',
+    cite: 'cite',
+    class: 'className',
+    classid: 'classID',
+    classname: 'className',
+    cols: 'cols',
+    colspan: 'colSpan',
+    content: 'content',
+    contenteditable: 'contentEditable',
+    contextmenu: 'contextMenu',
+    controls: 'controls',
+    controlslist: 'controlsList',
+    coords: 'coords',
+    crossorigin: 'crossOrigin',
+    dangerouslysetinnerhtml: 'dangerouslySetInnerHTML',
+    data: 'data',
+    datetime: 'dateTime',
+    default: 'default',
+    defaultchecked: 'defaultChecked',
+    defaultvalue: 'defaultValue',
+    defer: 'defer',
+    dir: 'dir',
+    disabled: 'disabled',
+    disablepictureinpicture: 'disablePictureInPicture',
+    download: 'download',
+    draggable: 'draggable',
+    enctype: 'encType',
+    for: 'htmlFor',
+    form: 'form',
+    formmethod: 'formMethod',
+    formaction: 'formAction',
+    formenctype: 'formEncType',
+    formnovalidate: 'formNoValidate',
+    formtarget: 'formTarget',
+    frameborder: 'frameBorder',
+    headers: 'headers',
+    height: 'height',
+    hidden: 'hidden',
+    high: 'high',
+    href: 'href',
+    hreflang: 'hrefLang',
+    htmlfor: 'htmlFor',
+    httpequiv: 'httpEquiv',
+    'http-equiv': 'httpEquiv',
+    icon: 'icon',
+    id: 'id',
+    innerhtml: 'innerHTML',
+    inputmode: 'inputMode',
+    integrity: 'integrity',
+    is: 'is',
+    itemid: 'itemID',
+    itemprop: 'itemProp',
+    itemref: 'itemRef',
+    itemscope: 'itemScope',
+    itemtype: 'itemType',
+    keyparams: 'keyParams',
+    keytype: 'keyType',
+    kind: 'kind',
+    label: 'label',
+    lang: 'lang',
+    list: 'list',
+    loop: 'loop',
+    low: 'low',
+    manifest: 'manifest',
+    marginwidth: 'marginWidth',
+    marginheight: 'marginHeight',
+    max: 'max',
+    maxlength: 'maxLength',
+    media: 'media',
+    mediagroup: 'mediaGroup',
+    method: 'method',
+    min: 'min',
+    minlength: 'minLength',
+    multiple: 'multiple',
+    muted: 'muted',
+    name: 'name',
+    nomodule: 'noModule',
+    nonce: 'nonce',
+    novalidate: 'noValidate',
+    open: 'open',
+    optimum: 'optimum',
+    pattern: 'pattern',
+    placeholder: 'placeholder',
+    playsinline: 'playsInline',
+    poster: 'poster',
+    preload: 'preload',
+    profile: 'profile',
+    radiogroup: 'radioGroup',
+    readonly: 'readOnly',
+    referrerpolicy: 'referrerPolicy',
+    rel: 'rel',
+    required: 'required',
+    reversed: 'reversed',
+    role: 'role',
+    rows: 'rows',
+    rowspan: 'rowSpan',
+    sandbox: 'sandbox',
+    scope: 'scope',
+    scoped: 'scoped',
+    scrolling: 'scrolling',
+    seamless: 'seamless',
+    selected: 'selected',
+    shape: 'shape',
+    size: 'size',
+    sizes: 'sizes',
+    span: 'span',
+    spellcheck: 'spellCheck',
+    src: 'src',
+    srcdoc: 'srcDoc',
+    srclang: 'srcLang',
+    srcset: 'srcSet',
+    start: 'start',
+    step: 'step',
+    style: 'style',
+    summary: 'summary',
+    tabindex: 'tabIndex',
+    target: 'target',
+    title: 'title',
+    type: 'type',
+    usemap: 'useMap',
+    value: 'value',
+    width: 'width',
+    wmode: 'wmode',
+    wrap: 'wrap',
+    // SVG
+    about: 'about',
+    accentheight: 'accentHeight',
+    'accent-height': 'accentHeight',
+    accumulate: 'accumulate',
+    additive: 'additive',
+    alignmentbaseline: 'alignmentBaseline',
+    'alignment-baseline': 'alignmentBaseline',
+    allowreorder: 'allowReorder',
+    alphabetic: 'alphabetic',
+    amplitude: 'amplitude',
+    arabicform: 'arabicForm',
+    'arabic-form': 'arabicForm',
+    ascent: 'ascent',
+    attributename: 'attributeName',
+    attributetype: 'attributeType',
+    autoreverse: 'autoReverse',
+    azimuth: 'azimuth',
+    basefrequency: 'baseFrequency',
+    baselineshift: 'baselineShift',
+    'baseline-shift': 'baselineShift',
+    baseprofile: 'baseProfile',
+    bbox: 'bbox',
+    begin: 'begin',
+    bias: 'bias',
+    by: 'by',
+    calcmode: 'calcMode',
+    capheight: 'capHeight',
+    'cap-height': 'capHeight',
+    clip: 'clip',
+    clippath: 'clipPath',
+    'clip-path': 'clipPath',
+    clippathunits: 'clipPathUnits',
+    cliprule: 'clipRule',
+    'clip-rule': 'clipRule',
+    color: 'color',
+    colorinterpolation: 'colorInterpolation',
+    'color-interpolation': 'colorInterpolation',
+    colorinterpolationfilters: 'colorInterpolationFilters',
+    'color-interpolation-filters': 'colorInterpolationFilters',
+    colorprofile: 'colorProfile',
+    'color-profile': 'colorProfile',
+    colorrendering: 'colorRendering',
+    'color-rendering': 'colorRendering',
+    contentscripttype: 'contentScriptType',
+    contentstyletype: 'contentStyleType',
+    cursor: 'cursor',
+    cx: 'cx',
+    cy: 'cy',
+    d: 'd',
+    datatype: 'datatype',
+    decelerate: 'decelerate',
+    descent: 'descent',
+    diffuseconstant: 'diffuseConstant',
+    direction: 'direction',
+    display: 'display',
+    divisor: 'divisor',
+    dominantbaseline: 'dominantBaseline',
+    'dominant-baseline': 'dominantBaseline',
+    dur: 'dur',
+    dx: 'dx',
+    dy: 'dy',
+    edgemode: 'edgeMode',
+    elevation: 'elevation',
+    enablebackground: 'enableBackground',
+    'enable-background': 'enableBackground',
+    end: 'end',
+    exponent: 'exponent',
+    externalresourcesrequired: 'externalResourcesRequired',
+    fill: 'fill',
+    fillopacity: 'fillOpacity',
+    'fill-opacity': 'fillOpacity',
+    fillrule: 'fillRule',
+    'fill-rule': 'fillRule',
+    filter: 'filter',
+    filterres: 'filterRes',
+    filterunits: 'filterUnits',
+    floodopacity: 'floodOpacity',
+    'flood-opacity': 'floodOpacity',
+    floodcolor: 'floodColor',
+    'flood-color': 'floodColor',
+    focusable: 'focusable',
+    fontfamily: 'fontFamily',
+    'font-family': 'fontFamily',
+    fontsize: 'fontSize',
+    'font-size': 'fontSize',
+    fontsizeadjust: 'fontSizeAdjust',
+    'font-size-adjust': 'fontSizeAdjust',
+    fontstretch: 'fontStretch',
+    'font-stretch': 'fontStretch',
+    fontstyle: 'fontStyle',
+    'font-style': 'fontStyle',
+    fontvariant: 'fontVariant',
+    'font-variant': 'fontVariant',
+    fontweight: 'fontWeight',
+    'font-weight': 'fontWeight',
+    format: 'format',
+    from: 'from',
+    fx: 'fx',
+    fy: 'fy',
+    g1: 'g1',
+    g2: 'g2',
+    glyphname: 'glyphName',
+    'glyph-name': 'glyphName',
+    glyphorientationhorizontal: 'glyphOrientationHorizontal',
+    'glyph-orientation-horizontal': 'glyphOrientationHorizontal',
+    glyphorientationvertical: 'glyphOrientationVertical',
+    'glyph-orientation-vertical': 'glyphOrientationVertical',
+    glyphref: 'glyphRef',
+    gradienttransform: 'gradientTransform',
+    gradientunits: 'gradientUnits',
+    hanging: 'hanging',
+    horizadvx: 'horizAdvX',
+    'horiz-adv-x': 'horizAdvX',
+    horizoriginx: 'horizOriginX',
+    'horiz-origin-x': 'horizOriginX',
+    ideographic: 'ideographic',
+    imagerendering: 'imageRendering',
+    'image-rendering': 'imageRendering',
+    in2: 'in2',
+    in: 'in',
+    inlist: 'inlist',
+    intercept: 'intercept',
+    k1: 'k1',
+    k2: 'k2',
+    k3: 'k3',
+    k4: 'k4',
+    k: 'k',
+    kernelmatrix: 'kernelMatrix',
+    kernelunitlength: 'kernelUnitLength',
+    kerning: 'kerning',
+    keypoints: 'keyPoints',
+    keysplines: 'keySplines',
+    keytimes: 'keyTimes',
+    lengthadjust: 'lengthAdjust',
+    letterspacing: 'letterSpacing',
+    'letter-spacing': 'letterSpacing',
+    lightingcolor: 'lightingColor',
+    'lighting-color': 'lightingColor',
+    limitingconeangle: 'limitingConeAngle',
+    local: 'local',
+    markerend: 'markerEnd',
+    'marker-end': 'markerEnd',
+    markerheight: 'markerHeight',
+    markermid: 'markerMid',
+    'marker-mid': 'markerMid',
+    markerstart: 'markerStart',
+    'marker-start': 'markerStart',
+    markerunits: 'markerUnits',
+    markerwidth: 'markerWidth',
+    mask: 'mask',
+    maskcontentunits: 'maskContentUnits',
+    maskunits: 'maskUnits',
+    mathematical: 'mathematical',
+    mode: 'mode',
+    numoctaves: 'numOctaves',
+    offset: 'offset',
+    opacity: 'opacity',
+    operator: 'operator',
+    order: 'order',
+    orient: 'orient',
+    orientation: 'orientation',
+    origin: 'origin',
+    overflow: 'overflow',
+    overlineposition: 'overlinePosition',
+    'overline-position': 'overlinePosition',
+    overlinethickness: 'overlineThickness',
+    'overline-thickness': 'overlineThickness',
+    paintorder: 'paintOrder',
+    'paint-order': 'paintOrder',
+    panose1: 'panose1',
+    'panose-1': 'panose1',
+    pathlength: 'pathLength',
+    patterncontentunits: 'patternContentUnits',
+    patterntransform: 'patternTransform',
+    patternunits: 'patternUnits',
+    pointerevents: 'pointerEvents',
+    'pointer-events': 'pointerEvents',
+    points: 'points',
+    pointsatx: 'pointsAtX',
+    pointsaty: 'pointsAtY',
+    pointsatz: 'pointsAtZ',
+    prefix: 'prefix',
+    preservealpha: 'preserveAlpha',
+    preserveaspectratio: 'preserveAspectRatio',
+    primitiveunits: 'primitiveUnits',
+    property: 'property',
+    r: 'r',
+    radius: 'radius',
+    refx: 'refX',
+    refy: 'refY',
+    renderingintent: 'renderingIntent',
+    'rendering-intent': 'renderingIntent',
+    repeatcount: 'repeatCount',
+    repeatdur: 'repeatDur',
+    requiredextensions: 'requiredExtensions',
+    requiredfeatures: 'requiredFeatures',
+    resource: 'resource',
+    restart: 'restart',
+    result: 'result',
+    results: 'results',
+    rotate: 'rotate',
+    rx: 'rx',
+    ry: 'ry',
+    scale: 'scale',
+    security: 'security',
+    seed: 'seed',
+    shaperendering: 'shapeRendering',
+    'shape-rendering': 'shapeRendering',
+    slope: 'slope',
+    spacing: 'spacing',
+    specularconstant: 'specularConstant',
+    specularexponent: 'specularExponent',
+    speed: 'speed',
+    spreadmethod: 'spreadMethod',
+    startoffset: 'startOffset',
+    stddeviation: 'stdDeviation',
+    stemh: 'stemh',
+    stemv: 'stemv',
+    stitchtiles: 'stitchTiles',
+    stopcolor: 'stopColor',
+    'stop-color': 'stopColor',
+    stopopacity: 'stopOpacity',
+    'stop-opacity': 'stopOpacity',
+    strikethroughposition: 'strikethroughPosition',
+    'strikethrough-position': 'strikethroughPosition',
+    strikethroughthickness: 'strikethroughThickness',
+    'strikethrough-thickness': 'strikethroughThickness',
+    string: 'string',
+    stroke: 'stroke',
+    strokedasharray: 'strokeDasharray',
+    'stroke-dasharray': 'strokeDasharray',
+    strokedashoffset: 'strokeDashoffset',
+    'stroke-dashoffset': 'strokeDashoffset',
+    strokelinecap: 'strokeLinecap',
+    'stroke-linecap': 'strokeLinecap',
+    strokelinejoin: 'strokeLinejoin',
+    'stroke-linejoin': 'strokeLinejoin',
+    strokemiterlimit: 'strokeMiterlimit',
+    'stroke-miterlimit': 'strokeMiterlimit',
+    strokewidth: 'strokeWidth',
+    'stroke-width': 'strokeWidth',
+    strokeopacity: 'strokeOpacity',
+    'stroke-opacity': 'strokeOpacity',
+    suppresscontenteditablewarning: 'suppressContentEditableWarning',
+    suppresshydrationwarning: 'suppressHydrationWarning',
+    surfacescale: 'surfaceScale',
+    systemlanguage: 'systemLanguage',
+    tablevalues: 'tableValues',
+    targetx: 'targetX',
+    targety: 'targetY',
+    textanchor: 'textAnchor',
+    'text-anchor': 'textAnchor',
+    textdecoration: 'textDecoration',
+    'text-decoration': 'textDecoration',
+    textlength: 'textLength',
+    textrendering: 'textRendering',
+    'text-rendering': 'textRendering',
+    to: 'to',
+    transform: 'transform',
+    typeof: 'typeof',
+    u1: 'u1',
+    u2: 'u2',
+    underlineposition: 'underlinePosition',
+    'underline-position': 'underlinePosition',
+    underlinethickness: 'underlineThickness',
+    'underline-thickness': 'underlineThickness',
+    unicode: 'unicode',
+    unicodebidi: 'unicodeBidi',
+    'unicode-bidi': 'unicodeBidi',
+    unicoderange: 'unicodeRange',
+    'unicode-range': 'unicodeRange',
+    unitsperem: 'unitsPerEm',
+    'units-per-em': 'unitsPerEm',
+    unselectable: 'unselectable',
+    valphabetic: 'vAlphabetic',
+    'v-alphabetic': 'vAlphabetic',
+    values: 'values',
+    vectoreffect: 'vectorEffect',
+    'vector-effect': 'vectorEffect',
+    version: 'version',
+    vertadvy: 'vertAdvY',
+    'vert-adv-y': 'vertAdvY',
+    vertoriginx: 'vertOriginX',
+    'vert-origin-x': 'vertOriginX',
+    vertoriginy: 'vertOriginY',
+    'vert-origin-y': 'vertOriginY',
+    vhanging: 'vHanging',
+    'v-hanging': 'vHanging',
+    videographic: 'vIdeographic',
+    'v-ideographic': 'vIdeographic',
+    viewbox: 'viewBox',
+    viewtarget: 'viewTarget',
+    visibility: 'visibility',
+    vmathematical: 'vMathematical',
+    'v-mathematical': 'vMathematical',
+    vocab: 'vocab',
+    widths: 'widths',
+    wordspacing: 'wordSpacing',
+    'word-spacing': 'wordSpacing',
+    writingmode: 'writingMode',
+    'writing-mode': 'writingMode',
+    x1: 'x1',
+    x2: 'x2',
+    x: 'x',
+    xchannelselector: 'xChannelSelector',
+    xheight: 'xHeight',
+    'x-height': 'xHeight',
+    xlinkactuate: 'xlinkActuate',
+    'xlink:actuate': 'xlinkActuate',
+    xlinkarcrole: 'xlinkArcrole',
+    'xlink:arcrole': 'xlinkArcrole',
+    xlinkhref: 'xlinkHref',
+    'xlink:href': 'xlinkHref',
+    xlinkrole: 'xlinkRole',
+    'xlink:role': 'xlinkRole',
+    xlinkshow: 'xlinkShow',
+    'xlink:show': 'xlinkShow',
+    xlinktitle: 'xlinkTitle',
+    'xlink:title': 'xlinkTitle',
+    xlinktype: 'xlinkType',
+    'xlink:type': 'xlinkType',
+    xmlbase: 'xmlBase',
+    'xml:base': 'xmlBase',
+    xmllang: 'xmlLang',
+    'xml:lang': 'xmlLang',
+    xmlns: 'xmlns',
+    'xml:space': 'xmlSpace',
+    xmlnsxlink: 'xmlnsXlink',
+    'xmlns:xlink': 'xmlnsXlink',
+    xmlspace: 'xmlSpace',
+    y1: 'y1',
+    y2: 'y2',
+    y: 'y',
+    ychannelselector: 'yChannelSelector',
+    z: 'z',
+    zoomandpan: 'zoomAndPan'
+  };
+
+  var validateProperty$1 = function () {};
+
+  {
+    var warnedProperties$1 = {};
+    var _hasOwnProperty = Object.prototype.hasOwnProperty;
+    var EVENT_NAME_REGEX = /^on./;
+    var INVALID_EVENT_NAME_REGEX = /^on[^A-Z]/;
+    var rARIA$1 = new RegExp('^(aria)-[' + ATTRIBUTE_NAME_CHAR + ']*$');
+    var rARIACamel$1 = new RegExp('^(aria)[A-Z][' + ATTRIBUTE_NAME_CHAR + ']*$');
+
+    validateProperty$1 = function (tagName, name, value, canUseEventSystem) {
+      if (_hasOwnProperty.call(warnedProperties$1, name) && warnedProperties$1[name]) {
+        return true;
+      }
+
+      var lowerCasedName = name.toLowerCase();
+
+      if (lowerCasedName === 'onfocusin' || lowerCasedName === 'onfocusout') {
+        error('React uses onFocus and onBlur instead of onFocusIn and onFocusOut. ' + 'All React events are normalized to bubble, so onFocusIn and onFocusOut ' + 'are not needed/supported by React.');
+
+        warnedProperties$1[name] = true;
+        return true;
+      } // We can't rely on the event system being injected on the server.
+
+
+      if (canUseEventSystem) {
+        if (registrationNameModules.hasOwnProperty(name)) {
+          return true;
+        }
+
+        var registrationName = possibleRegistrationNames.hasOwnProperty(lowerCasedName) ? possibleRegistrationNames[lowerCasedName] : null;
+
+        if (registrationName != null) {
+          error('Invalid event handler property `%s`. Did you mean `%s`?', name, registrationName);
+
+          warnedProperties$1[name] = true;
+          return true;
+        }
+
+        if (EVENT_NAME_REGEX.test(name)) {
+          error('Unknown event handler property `%s`. It will be ignored.', name);
+
+          warnedProperties$1[name] = true;
+          return true;
+        }
+      } else if (EVENT_NAME_REGEX.test(name)) {
+        // If no event plugins have been injected, we are in a server environment.
+        // So we can't tell if the event name is correct for sure, but we can filter
+        // out known bad ones like `onclick`. We can't suggest a specific replacement though.
+        if (INVALID_EVENT_NAME_REGEX.test(name)) {
+          error('Invalid event handler property `%s`. ' + 'React events use the camelCase naming convention, for example `onClick`.', name);
+        }
+
+        warnedProperties$1[name] = true;
+        return true;
+      } // Let the ARIA attribute hook validate ARIA attributes
+
+
+      if (rARIA$1.test(name) || rARIACamel$1.test(name)) {
+        return true;
+      }
+
+      if (lowerCasedName === 'innerhtml') {
+        error('Directly setting property `innerHTML` is not permitted. ' + 'For more information, lookup documentation on `dangerouslySetInnerHTML`.');
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+
+      if (lowerCasedName === 'aria') {
+        error('The `aria` attribute is reserved for future use in React. ' + 'Pass individual `aria-` attributes instead.');
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+
+      if (lowerCasedName === 'is' && value !== null && value !== undefined && typeof value !== 'string') {
+        error('Received a `%s` for a string attribute `is`. If this is expected, cast ' + 'the value to a string.', typeof value);
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+
+      if (typeof value === 'number' && isNaN(value)) {
+        error('Received NaN for the `%s` attribute. If this is expected, cast ' + 'the value to a string.', name);
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+
+      var propertyInfo = getPropertyInfo(name);
+      var isReserved = propertyInfo !== null && propertyInfo.type === RESERVED; // Known attributes should match the casing specified in the property config.
+
+      if (possibleStandardNames.hasOwnProperty(lowerCasedName)) {
+        var standardName = possibleStandardNames[lowerCasedName];
+
+        if (standardName !== name) {
+          error('Invalid DOM property `%s`. Did you mean `%s`?', name, standardName);
+
+          warnedProperties$1[name] = true;
+          return true;
+        }
+      } else if (!isReserved && name !== lowerCasedName) {
+        // Unknown attributes should have lowercase casing since that's how they
+        // will be cased anyway with server rendering.
+        error('React does not recognize the `%s` prop on a DOM element. If you ' + 'intentionally want it to appear in the DOM as a custom ' + 'attribute, spell it as lowercase `%s` instead. ' + 'If you accidentally passed it from a parent component, remove ' + 'it from the DOM element.', name, lowerCasedName);
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+
+      if (typeof value === 'boolean' && shouldRemoveAttributeWithWarning(name, value, propertyInfo, false)) {
+        if (value) {
+          error('Received `%s` for a non-boolean attribute `%s`.\n\n' + 'If you want to write it to the DOM, pass a string instead: ' + '%s="%s" or %s={value.toString()}.', value, name, name, value, name);
+        } else {
+          error('Received `%s` for a non-boolean attribute `%s`.\n\n' + 'If you want to write it to the DOM, pass a string instead: ' + '%s="%s" or %s={value.toString()}.\n\n' + 'If you used to conditionally omit it with %s={condition && value}, ' + 'pass %s={condition ? value : undefined} instead.', value, name, name, value, name, name, name);
+        }
+
+        warnedProperties$1[name] = true;
+        return true;
+      } // Now that we've validated casing, do not validate
+      // data types for reserved props
+
+
+      if (isReserved) {
+        return true;
+      } // Warn when a known attribute is a bad type
+
+
+      if (shouldRemoveAttributeWithWarning(name, value, propertyInfo, false)) {
+        warnedProperties$1[name] = true;
+        return false;
+      } // Warn when passing the strings 'false' or 'true' into a boolean prop
+
+
+      if ((value === 'false' || value === 'true') && propertyInfo !== null && propertyInfo.type === BOOLEAN) {
+        error('Received the string `%s` for the boolean attribute `%s`. ' + '%s ' + 'Did you mean %s={%s}?', value, name, value === 'false' ? 'The browser will interpret it as a truthy value.' : 'Although this works, it will not work as expected if you pass the string "false".', name, value);
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+
+      return true;
+    };
+  }
+
+  var warnUnknownProperties = function (type, props, canUseEventSystem) {
+    {
+      var unknownProps = [];
+
+      for (var key in props) {
+        var isValid = validateProperty$1(type, key, props[key], canUseEventSystem);
+
+        if (!isValid) {
+          unknownProps.push(key);
+        }
+      }
+
+      var unknownPropString = unknownProps.map(function (prop) {
+        return '`' + prop + '`';
+      }).join(', ');
+
+      if (unknownProps.length === 1) {
+        error('Invalid value for prop %s on <%s> tag. Either remove it from the element, ' + 'or pass a string or number value to keep it in the DOM. ' + 'For details, see https://fb.me/react-attribute-behavior', unknownPropString, type);
+      } else if (unknownProps.length > 1) {
+        error('Invalid values for props %s on <%s> tag. Either remove them from the element, ' + 'or pass a string or number value to keep them in the DOM. ' + 'For details, see https://fb.me/react-attribute-behavior', unknownPropString, type);
+      }
+    }
+  };
+
+  function validateProperties$2(type, props, canUseEventSystem) {
+    if (isCustomComponent(type, props)) {
+      return;
+    }
+
+    warnUnknownProperties(type, props, canUseEventSystem);
+  }
+
+  var toArray = React.Children.toArray; // This is only used in DEV.
+  // Each entry is `this.stack` from a currently executing renderer instance.
+  // (There may be more than one because ReactDOMServer is reentrant).
+  // Each stack is an array of frames which may contain nested stacks of elements.
+
+  var currentDebugStacks = [];
+  var ReactCurrentDispatcher = ReactSharedInternals.ReactCurrentDispatcher;
+  var ReactDebugCurrentFrame$4;
+  var prevGetCurrentStackImpl = null;
+
+  var getCurrentServerStackImpl = function () {
+    return '';
+  };
+
+  var describeStackFrame = function (element) {
+    return '';
+  };
+
+  var validatePropertiesInDevelopment = function (type, props) {};
+
+  var pushCurrentDebugStack = function (stack) {};
+
+  var pushElementToDebugStack = function (element) {};
+
+  var popCurrentDebugStack = function () {};
+
+  var hasWarnedAboutUsingContextAsConsumer = false;
+
+  {
+    ReactDebugCurrentFrame$4 = ReactSharedInternals.ReactDebugCurrentFrame;
+
+    validatePropertiesInDevelopment = function (type, props) {
+      validateProperties(type, props);
+      validateProperties$1(type, props);
+      validateProperties$2(type, props,
+      /* canUseEventSystem */
+      false);
+    };
+
+    describeStackFrame = function (element) {
+      var source = element._source;
+      var type = element.type;
+      var name = getComponentName(type);
+      var ownerName = null;
+      return describeComponentFrame(name, source, ownerName);
+    };
+
+    pushCurrentDebugStack = function (stack) {
+      currentDebugStacks.push(stack);
+
+      if (currentDebugStacks.length === 1) {
+        // We are entering a server renderer.
+        // Remember the previous (e.g. client) global stack implementation.
+        prevGetCurrentStackImpl = ReactDebugCurrentFrame$4.getCurrentStack;
+        ReactDebugCurrentFrame$4.getCurrentStack = getCurrentServerStackImpl;
+      }
+    };
+
+    pushElementToDebugStack = function (element) {
+      // For the innermost executing ReactDOMServer call,
+      var stack = currentDebugStacks[currentDebugStacks.length - 1]; // Take the innermost executing frame (e.g. <Foo>),
+
+      var frame = stack[stack.length - 1]; // and record that it has one more element associated with it.
+
+      frame.debugElementStack.push(element); // We only need this because we tail-optimize single-element
+      // children and directly handle them in an inner loop instead of
+      // creating separate frames for them.
+    };
+
+    popCurrentDebugStack = function () {
+      currentDebugStacks.pop();
+
+      if (currentDebugStacks.length === 0) {
+        // We are exiting the server renderer.
+        // Restore the previous (e.g. client) global stack implementation.
+        ReactDebugCurrentFrame$4.getCurrentStack = prevGetCurrentStackImpl;
+        prevGetCurrentStackImpl = null;
+      }
+    };
+
+    getCurrentServerStackImpl = function () {
+      if (currentDebugStacks.length === 0) {
+        // Nothing is currently rendering.
+        return '';
+      } // ReactDOMServer is reentrant so there may be multiple calls at the same time.
+      // Take the frames from the innermost call which is the last in the array.
+
+
+      var frames = currentDebugStacks[currentDebugStacks.length - 1];
+      var stack = ''; // Go through every frame in the stack from the innermost one.
+
+      for (var i = frames.length - 1; i >= 0; i--) {
+        var frame = frames[i]; // Every frame might have more than one debug element stack entry associated with it.
+        // This is because single-child nesting doesn't create materialized frames.
+        // Instead it would push them through `pushElementToDebugStack()`.
+
+        var debugElementStack = frame.debugElementStack;
+
+        for (var ii = debugElementStack.length - 1; ii >= 0; ii--) {
+          stack += describeStackFrame(debugElementStack[ii]);
+        }
+      }
+
+      return stack;
+    };
+  }
+
+  var didWarnDefaultInputValue = false;
+  var didWarnDefaultChecked = false;
+  var didWarnDefaultSelectValue = false;
+  var didWarnDefaultTextareaValue = false;
+  var didWarnInvalidOptionChildren = false;
+  var didWarnAboutNoopUpdateForComponent = {};
+  var didWarnAboutBadClass = {};
+  var didWarnAboutModulePatternComponent = {};
+  var didWarnAboutDeprecatedWillMount = {};
+  var didWarnAboutUndefinedDerivedState = {};
+  var didWarnAboutUninitializedState = {};
+  var valuePropNames = ['value', 'defaultValue'];
+  var newlineEatingTags = {
+    listing: true,
+    pre: true,
+    textarea: true
+  }; // We accept any tag to be rendered but since this gets injected into arbitrary
+  // HTML, we want to make sure that it's a safe tag.
+  // http://www.w3.org/TR/REC-xml/#NT-Name
+
+  var VALID_TAG_REGEX = /^[a-zA-Z][a-zA-Z:_\.\-\d]*$/; // Simplified subset
+
+  var validatedTagCache = {};
+
+  function validateDangerousTag(tag) {
+    if (!validatedTagCache.hasOwnProperty(tag)) {
+      if (!VALID_TAG_REGEX.test(tag)) {
+        {
+          throw Error( "Invalid tag: " + tag );
+        }
+      }
+
+      validatedTagCache[tag] = true;
+    }
+  }
+
+  var styleNameCache = {};
+
+  var processStyleName = function (styleName) {
+    if (styleNameCache.hasOwnProperty(styleName)) {
+      return styleNameCache[styleName];
+    }
+
+    var result = hyphenateStyleName(styleName);
+    styleNameCache[styleName] = result;
+    return result;
+  };
+
+  function createMarkupForStyles(styles) {
+    var serialized = '';
+    var delimiter = '';
+
+    for (var styleName in styles) {
+      if (!styles.hasOwnProperty(styleName)) {
+        continue;
+      }
+
+      var isCustomProperty = styleName.indexOf('--') === 0;
+      var styleValue = styles[styleName];
+
+      {
+        if (!isCustomProperty) {
+          warnValidStyle$1(styleName, styleValue);
+        }
+      }
+
+      if (styleValue != null) {
+        serialized += delimiter + (isCustomProperty ? styleName : processStyleName(styleName)) + ':';
+        serialized += dangerousStyleValue(styleName, styleValue, isCustomProperty);
+        delimiter = ';';
+      }
+    }
+
+    return serialized || null;
+  }
+
+  function warnNoop(publicInstance, callerName) {
+    {
+      var _constructor = publicInstance.constructor;
+      var componentName = _constructor && getComponentName(_constructor) || 'ReactClass';
+      var warningKey = componentName + '.' + callerName;
+
+      if (didWarnAboutNoopUpdateForComponent[warningKey]) {
+        return;
+      }
+
+      error('%s(...): Can only update a mounting component. ' + 'This usually means you called %s() outside componentWillMount() on the server. ' + 'This is a no-op.\n\nPlease check the code for the %s component.', callerName, callerName, componentName);
+
+      didWarnAboutNoopUpdateForComponent[warningKey] = true;
+    }
+  }
+
+  function shouldConstruct(Component) {
+    return Component.prototype && Component.prototype.isReactComponent;
+  }
+
+  function getNonChildrenInnerMarkup(props) {
+    var innerHTML = props.dangerouslySetInnerHTML;
+
+    if (innerHTML != null) {
+      if (innerHTML.__html != null) {
+        return innerHTML.__html;
+      }
+    } else {
+      var content = props.children;
+
+      if (typeof content === 'string' || typeof content === 'number') {
+        return escapeTextForBrowser(content);
+      }
+    }
+
+    return null;
+  }
+
+  function flattenTopLevelChildren(children) {
+    if (!React.isValidElement(children)) {
+      return toArray(children);
+    }
+
+    var element = children;
+
+    if (element.type !== REACT_FRAGMENT_TYPE) {
+      return [element];
+    }
+
+    var fragmentChildren = element.props.children;
+
+    if (!React.isValidElement(fragmentChildren)) {
+      return toArray(fragmentChildren);
+    }
+
+    var fragmentChildElement = fragmentChildren;
+    return [fragmentChildElement];
+  }
+
+  function flattenOptionChildren(children) {
+    if (children === undefined || children === null) {
+      return children;
+    }
+
+    var content = ''; // Flatten children and warn if they aren't strings or numbers;
+    // invalid types are ignored.
+
+    React.Children.forEach(children, function (child) {
+      if (child == null) {
+        return;
+      }
+
+      content += child;
+
+      {
+        if (!didWarnInvalidOptionChildren && typeof child !== 'string' && typeof child !== 'number') {
+          didWarnInvalidOptionChildren = true;
+
+          error('Only strings and numbers are supported as <option> children.');
+        }
+      }
+    });
+    return content;
+  }
+
+  var hasOwnProperty$2 = Object.prototype.hasOwnProperty;
+  var STYLE = 'style';
+  var RESERVED_PROPS = {
+    children: null,
+    dangerouslySetInnerHTML: null,
+    suppressContentEditableWarning: null,
+    suppressHydrationWarning: null
+  };
+
+  function createOpenTagMarkup(tagVerbatim, tagLowercase, props, namespace, makeStaticMarkup, isRootElement) {
+    var ret = '<' + tagVerbatim;
+
+    for (var propKey in props) {
+      if (!hasOwnProperty$2.call(props, propKey)) {
+        continue;
+      }
+
+      var propValue = props[propKey];
+
+      if (propValue == null) {
+        continue;
+      }
+
+      if (propKey === STYLE) {
+        propValue = createMarkupForStyles(propValue);
+      }
+
+      var markup = null;
+
+      if (isCustomComponent(tagLowercase, props)) {
+        if (!RESERVED_PROPS.hasOwnProperty(propKey)) {
+          markup = createMarkupForCustomAttribute(propKey, propValue);
+        }
+      } else {
+        markup = createMarkupForProperty(propKey, propValue);
+      }
+
+      if (markup) {
+        ret += ' ' + markup;
+      }
+    } // For static pages, no need to put React ID and checksum. Saves lots of
+    // bytes.
+
+
+    if (makeStaticMarkup) {
+      return ret;
+    }
+
+    if (isRootElement) {
+      ret += ' ' + createMarkupForRoot();
+    }
+
+    return ret;
+  }
+
+  function validateRenderResult(child, type) {
+    if (child === undefined) {
+      {
+        {
+          throw Error( (getComponentName(type) || 'Component') + "(...): Nothing was returned from render. This usually means a return statement is missing. Or, to render nothing, return null." );
+        }
+      }
+    }
+  }
+
+  function resolve(child, context, threadID) {
+    while (React.isValidElement(child)) {
+      // Safe because we just checked it's an element.
+      var element = child;
+      var Component = element.type;
+
+      {
+        pushElementToDebugStack(element);
+      }
+
+      if (typeof Component !== 'function') {
+        break;
+      }
+
+      processChild(element, Component);
+    } // Extra closure so queue and replace can be captured properly
+
+
+    function processChild(element, Component) {
+      var isClass = shouldConstruct(Component);
+      var publicContext = processContext(Component, context, threadID, isClass);
+      var queue = [];
+      var replace = false;
+      var updater = {
+        isMounted: function (publicInstance) {
+          return false;
+        },
+        enqueueForceUpdate: function (publicInstance) {
+          if (queue === null) {
+            warnNoop(publicInstance, 'forceUpdate');
+            return null;
+          }
+        },
+        enqueueReplaceState: function (publicInstance, completeState) {
+          replace = true;
+          queue = [completeState];
+        },
+        enqueueSetState: function (publicInstance, currentPartialState) {
+          if (queue === null) {
+            warnNoop(publicInstance, 'setState');
+            return null;
+          }
+
+          queue.push(currentPartialState);
+        }
+      };
+      var inst;
+
+      if (isClass) {
+        inst = new Component(element.props, publicContext, updater);
+
+        if (typeof Component.getDerivedStateFromProps === 'function') {
+          {
+            if (inst.state === null || inst.state === undefined) {
+              var componentName = getComponentName(Component) || 'Unknown';
+
+              if (!didWarnAboutUninitializedState[componentName]) {
+                error('`%s` uses `getDerivedStateFromProps` but its initial state is ' + '%s. This is not recommended. Instead, define the initial state by ' + 'assigning an object to `this.state` in the constructor of `%s`. ' + 'This ensures that `getDerivedStateFromProps` arguments have a consistent shape.', componentName, inst.state === null ? 'null' : 'undefined', componentName);
+
+                didWarnAboutUninitializedState[componentName] = true;
+              }
+            }
+          }
+
+          var partialState = Component.getDerivedStateFromProps.call(null, element.props, inst.state);
+
+          {
+            if (partialState === undefined) {
+              var _componentName = getComponentName(Component) || 'Unknown';
+
+              if (!didWarnAboutUndefinedDerivedState[_componentName]) {
+                error('%s.getDerivedStateFromProps(): A valid state object (or null) must be returned. ' + 'You have returned undefined.', _componentName);
+
+                didWarnAboutUndefinedDerivedState[_componentName] = true;
+              }
+            }
+          }
+
+          if (partialState != null) {
+            inst.state = _assign({}, inst.state, partialState);
+          }
+        }
+      } else {
+        {
+          if (Component.prototype && typeof Component.prototype.render === 'function') {
+            var _componentName2 = getComponentName(Component) || 'Unknown';
+
+            if (!didWarnAboutBadClass[_componentName2]) {
+              error("The <%s /> component appears to have a render method, but doesn't extend React.Component. " + 'This is likely to cause errors. Change %s to extend React.Component instead.', _componentName2, _componentName2);
+
+              didWarnAboutBadClass[_componentName2] = true;
+            }
+          }
+        }
+
+        var componentIdentity = {};
+        prepareToUseHooks(componentIdentity);
+        inst = Component(element.props, publicContext, updater);
+        inst = finishHooks(Component, element.props, inst, publicContext);
+
+        if (inst == null || inst.render == null) {
+          child = inst;
+          validateRenderResult(child, Component);
+          return;
+        }
+
+        {
+          var _componentName3 = getComponentName(Component) || 'Unknown';
+
+          if (!didWarnAboutModulePatternComponent[_componentName3]) {
+            error('The <%s /> component appears to be a function component that returns a class instance. ' + 'Change %s to a class that extends React.Component instead. ' + "If you can't use a class try assigning the prototype on the function as a workaround. " + "`%s.prototype = React.Component.prototype`. Don't use an arrow function since it " + 'cannot be called with `new` by React.', _componentName3, _componentName3, _componentName3);
+
+            didWarnAboutModulePatternComponent[_componentName3] = true;
+          }
+        }
+      }
+
+      inst.props = element.props;
+      inst.context = publicContext;
+      inst.updater = updater;
+      var initialState = inst.state;
+
+      if (initialState === undefined) {
+        inst.state = initialState = null;
+      }
+
+      if (typeof inst.UNSAFE_componentWillMount === 'function' || typeof inst.componentWillMount === 'function') {
+        if (typeof inst.componentWillMount === 'function') {
+          {
+            if ( inst.componentWillMount.__suppressDeprecationWarning !== true) {
+              var _componentName4 = getComponentName(Component) || 'Unknown';
+
+              if (!didWarnAboutDeprecatedWillMount[_componentName4]) {
+                warn( // keep this warning in sync with ReactStrictModeWarning.js
+                'componentWillMount has been renamed, and is not recommended for use. ' + 'See https://fb.me/react-unsafe-component-lifecycles for details.\n\n' + '* Move code from componentWillMount to componentDidMount (preferred in most cases) ' + 'or the constructor.\n' + '\nPlease update the following components: %s', _componentName4);
+
+                didWarnAboutDeprecatedWillMount[_componentName4] = true;
+              }
+            }
+          } // In order to support react-lifecycles-compat polyfilled components,
+          // Unsafe lifecycles should not be invoked for any component with the new gDSFP.
+
+
+          if (typeof Component.getDerivedStateFromProps !== 'function') {
+            inst.componentWillMount();
+          }
+        }
+
+        if (typeof inst.UNSAFE_componentWillMount === 'function' && typeof Component.getDerivedStateFromProps !== 'function') {
+          // In order to support react-lifecycles-compat polyfilled components,
+          // Unsafe lifecycles should not be invoked for any component with the new gDSFP.
+          inst.UNSAFE_componentWillMount();
+        }
+
+        if (queue.length) {
+          var oldQueue = queue;
+          var oldReplace = replace;
+          queue = null;
+          replace = false;
+
+          if (oldReplace && oldQueue.length === 1) {
+            inst.state = oldQueue[0];
+          } else {
+            var nextState = oldReplace ? oldQueue[0] : inst.state;
+            var dontMutate = true;
+
+            for (var i = oldReplace ? 1 : 0; i < oldQueue.length; i++) {
+              var partial = oldQueue[i];
+
+              var _partialState = typeof partial === 'function' ? partial.call(inst, nextState, element.props, publicContext) : partial;
+
+              if (_partialState != null) {
+                if (dontMutate) {
+                  dontMutate = false;
+                  nextState = _assign({}, nextState, _partialState);
+                } else {
+                  _assign(nextState, _partialState);
+                }
+              }
+            }
+
+            inst.state = nextState;
+          }
+        } else {
+          queue = null;
+        }
+      }
+
+      child = inst.render();
+
+      {
+        if (child === undefined && inst.render._isMockFunction) {
+          // This is probably bad practice. Consider warning here and
+          // deprecating this convenience.
+          child = null;
+        }
+      }
+
+      validateRenderResult(child, Component);
+      var childContext;
+
+      {
+        if (typeof inst.getChildContext === 'function') {
+          var _childContextTypes = Component.childContextTypes;
+
+          if (typeof _childContextTypes === 'object') {
+            childContext = inst.getChildContext();
+
+            for (var contextKey in childContext) {
+              if (!(contextKey in _childContextTypes)) {
+                {
+                  throw Error( (getComponentName(Component) || 'Unknown') + ".getChildContext(): key \"" + contextKey + "\" is not defined in childContextTypes." );
+                }
+              }
+            }
+          } else {
+            {
+              error('%s.getChildContext(): childContextTypes must be defined in order to ' + 'use getChildContext().', getComponentName(Component) || 'Unknown');
+            }
+          }
+        }
+
+        if (childContext) {
+          context = _assign({}, context, childContext);
+        }
+      }
+    }
+
+    return {
+      child: child,
+      context: context
+    };
+  }
+
+  var ReactDOMServerRenderer =
+  /*#__PURE__*/
+  function () {
+    // TODO: type this more strictly:
+    // DEV-only
+    function ReactDOMServerRenderer(children, makeStaticMarkup) {
+      var flatChildren = flattenTopLevelChildren(children);
+      var topFrame = {
+        type: null,
+        // Assume all trees start in the HTML namespace (not totally true, but
+        // this is what we did historically)
+        domNamespace: Namespaces.html,
+        children: flatChildren,
+        childIndex: 0,
+        context: emptyObject,
+        footer: ''
+      };
+
+      {
+        topFrame.debugElementStack = [];
+      }
+
+      this.threadID = allocThreadID();
+      this.stack = [topFrame];
+      this.exhausted = false;
+      this.currentSelectValue = null;
+      this.previousWasTextNode = false;
+      this.makeStaticMarkup = makeStaticMarkup;
+      this.suspenseDepth = 0; // Context (new API)
+
+      this.contextIndex = -1;
+      this.contextStack = [];
+      this.contextValueStack = [];
+
+      {
+        this.contextProviderStack = [];
+      }
+    }
+
+    var _proto = ReactDOMServerRenderer.prototype;
+
+    _proto.destroy = function destroy() {
+      if (!this.exhausted) {
+        this.exhausted = true;
+        this.clearProviders();
+        freeThreadID(this.threadID);
+      }
+    }
+    /**
+     * Note: We use just two stacks regardless of how many context providers you have.
+     * Providers are always popped in the reverse order to how they were pushed
+     * so we always know on the way down which provider you'll encounter next on the way up.
+     * On the way down, we push the current provider, and its context value *before*
+     * we mutated it, onto the stacks. Therefore, on the way up, we always know which
+     * provider needs to be "restored" to which value.
+     * https://github.com/facebook/react/pull/12985#issuecomment-396301248
+     */
+    ;
+
+    _proto.pushProvider = function pushProvider(provider) {
+      var index = ++this.contextIndex;
+      var context = provider.type._context;
+      var threadID = this.threadID;
+      validateContextBounds(context, threadID);
+      var previousValue = context[threadID]; // Remember which value to restore this context to on our way up.
+
+      this.contextStack[index] = context;
+      this.contextValueStack[index] = previousValue;
+
+      {
+        // Only used for push/pop mismatch warnings.
+        this.contextProviderStack[index] = provider;
+      } // Mutate the current value.
+
+
+      context[threadID] = provider.props.value;
+    };
+
+    _proto.popProvider = function popProvider(provider) {
+      var index = this.contextIndex;
+
+      {
+        if (index < 0 || provider !== this.contextProviderStack[index]) {
+          error('Unexpected pop.');
+        }
+      }
+
+      var context = this.contextStack[index];
+      var previousValue = this.contextValueStack[index]; // "Hide" these null assignments from Flow by using `any`
+      // because conceptually they are deletions--as long as we
+      // promise to never access values beyond `this.contextIndex`.
+
+      this.contextStack[index] = null;
+      this.contextValueStack[index] = null;
+
+      {
+        this.contextProviderStack[index] = null;
+      }
+
+      this.contextIndex--; // Restore to the previous value we stored as we were walking down.
+      // We've already verified that this context has been expanded to accommodate
+      // this thread id, so we don't need to do it again.
+
+      context[this.threadID] = previousValue;
+    };
+
+    _proto.clearProviders = function clearProviders() {
+      // Restore any remaining providers on the stack to previous values
+      for (var index = this.contextIndex; index >= 0; index--) {
+        var context = this.contextStack[index];
+        var previousValue = this.contextValueStack[index];
+        context[this.threadID] = previousValue;
+      }
+    };
+
+    _proto.read = function read(bytes) {
+      if (this.exhausted) {
+        return null;
+      }
+
+      var prevThreadID = currentThreadID;
+      setCurrentThreadID(this.threadID);
+      var prevDispatcher = ReactCurrentDispatcher.current;
+      ReactCurrentDispatcher.current = Dispatcher;
+
+      try {
+        // Markup generated within <Suspense> ends up buffered until we know
+        // nothing in that boundary suspended
+        var out = [''];
+        var suspended = false;
+
+        while (out[0].length < bytes) {
+          if (this.stack.length === 0) {
+            this.exhausted = true;
+            freeThreadID(this.threadID);
+            break;
+          }
+
+          var frame = this.stack[this.stack.length - 1];
+
+          if (suspended || frame.childIndex >= frame.children.length) {
+            var footer = frame.footer;
+
+            if (footer !== '') {
+              this.previousWasTextNode = false;
+            }
+
+            this.stack.pop();
+
+            if (frame.type === 'select') {
+              this.currentSelectValue = null;
+            } else if (frame.type != null && frame.type.type != null && frame.type.type.$$typeof === REACT_PROVIDER_TYPE) {
+              var provider = frame.type;
+              this.popProvider(provider);
+            } else if (frame.type === REACT_SUSPENSE_TYPE) {
+              this.suspenseDepth--;
+              var buffered = out.pop();
+
+              if (suspended) {
+                suspended = false; // If rendering was suspended at this boundary, render the fallbackFrame
+
+                var fallbackFrame = frame.fallbackFrame;
+
+                if (!fallbackFrame) {
+                  {
+                    throw Error(true ? "ReactDOMServer did not find an internal fallback frame for Suspense. This is a bug in React. Please file an issue." : formatProdErrorMessage(303));
+                  }
+                }
+
+                this.stack.push(fallbackFrame);
+                out[this.suspenseDepth] += '<!--$!-->'; // Skip flushing output since we're switching to the fallback
+
+                continue;
+              } else {
+                out[this.suspenseDepth] += buffered;
+              }
+            } // Flush output
+
+
+            out[this.suspenseDepth] += footer;
+            continue;
+          }
+
+          var child = frame.children[frame.childIndex++];
+          var outBuffer = '';
+
+          if (true) {
+            pushCurrentDebugStack(this.stack); // We're starting work on this frame, so reset its inner stack.
+
+            frame.debugElementStack.length = 0;
+          }
+
+          try {
+            outBuffer += this.render(child, frame.context, frame.domNamespace);
+          } catch (err) {
+            if (err != null && typeof err.then === 'function') {
+              if (enableSuspenseServerRenderer) {
+                if (!(this.suspenseDepth > 0)) {
+                  {
+                    throw Error(true ? "A React component suspended while rendering, but no fallback UI was specified.\n\nAdd a <Suspense fallback=...> component higher in the tree to provide a loading indicator or placeholder to display." : formatProdErrorMessage(342));
+                  }
+                }
+
+                suspended = true;
+              } else {
+                if (!false) {
+                  {
+                    throw Error(true ? "ReactDOMServer does not yet support Suspense." : formatProdErrorMessage(294));
+                  }
+                }
+              }
+            } else {
+              throw err;
+            }
+          } finally {
+            if (true) {
+              popCurrentDebugStack();
+            }
+          }
+
+          if (out.length <= this.suspenseDepth) {
+            out.push('');
+          }
+
+          out[this.suspenseDepth] += outBuffer;
+        }
+
+        return out[0];
+      } finally {
+        ReactCurrentDispatcher.current = prevDispatcher;
+        setCurrentThreadID(prevThreadID);
+      }
+    };
+
+    _proto.render = function render(child, context, parentNamespace) {
+      if (typeof child === 'string' || typeof child === 'number') {
+        var text = '' + child;
+
+        if (text === '') {
+          return '';
+        }
+
+        if (this.makeStaticMarkup) {
+          return escapeTextForBrowser(text);
+        }
+
+        if (this.previousWasTextNode) {
+          return '<!-- -->' + escapeTextForBrowser(text);
+        }
+
+        this.previousWasTextNode = true;
+        return escapeTextForBrowser(text);
+      } else {
+        var nextChild;
+
+        var _resolve = resolve(child, context, this.threadID);
+
+        nextChild = _resolve.child;
+        context = _resolve.context;
+
+        if (nextChild === null || nextChild === false) {
+          return '';
+        } else if (!React.isValidElement(nextChild)) {
+          if (nextChild != null && nextChild.$$typeof != null) {
+            // Catch unexpected special types early.
+            var $$typeof = nextChild.$$typeof;
+
+            if (!($$typeof !== REACT_PORTAL_TYPE)) {
+              {
+                throw Error( "Portals are not currently supported by the server renderer. Render them conditionally so that they only appear on the client render." );
+              }
+            } // Catch-all to prevent an infinite loop if React.Children.toArray() supports some new type.
+
+
+            {
+              {
+                throw Error( "Unknown element-like object type: " + $$typeof.toString() + ". This is likely a bug in React. Please file an issue." );
+              }
+            }
+          }
+
+          var nextChildren = toArray(nextChild);
+          var frame = {
+            type: null,
+            domNamespace: parentNamespace,
+            children: nextChildren,
+            childIndex: 0,
+            context: context,
+            footer: ''
+          };
+
+          {
+            frame.debugElementStack = [];
+          }
+
+          this.stack.push(frame);
+          return '';
+        } // Safe because we just checked it's an element.
+
+
+        var nextElement = nextChild;
+        var elementType = nextElement.type;
+
+        if (typeof elementType === 'string') {
+          return this.renderDOM(nextElement, context, parentNamespace);
+        }
+
+        switch (elementType) {
+          case REACT_STRICT_MODE_TYPE:
+          case REACT_CONCURRENT_MODE_TYPE:
+          case REACT_PROFILER_TYPE:
+          case REACT_SUSPENSE_LIST_TYPE:
+          case REACT_FRAGMENT_TYPE:
+            {
+              var _nextChildren = toArray(nextChild.props.children);
+
+              var _frame = {
+                type: null,
+                domNamespace: parentNamespace,
+                children: _nextChildren,
+                childIndex: 0,
+                context: context,
+                footer: ''
+              };
+
+              {
+                _frame.debugElementStack = [];
+              }
+
+              this.stack.push(_frame);
+              return '';
+            }
+
+          case REACT_SUSPENSE_TYPE:
+            {
+              {
+                {
+                  {
+                    throw Error( "ReactDOMServer does not yet support Suspense." );
+                  }
+                }
+              }
+            }
+        }
+
+        if (typeof elementType === 'object' && elementType !== null) {
+          switch (elementType.$$typeof) {
+            case REACT_FORWARD_REF_TYPE:
+              {
+                var element = nextChild;
+
+                var _nextChildren4;
+
+                var componentIdentity = {};
+                prepareToUseHooks(componentIdentity);
+                _nextChildren4 = elementType.render(element.props, element.ref);
+                _nextChildren4 = finishHooks(elementType.render, element.props, _nextChildren4, element.ref);
+                _nextChildren4 = toArray(_nextChildren4);
+                var _frame4 = {
+                  type: null,
+                  domNamespace: parentNamespace,
+                  children: _nextChildren4,
+                  childIndex: 0,
+                  context: context,
+                  footer: ''
+                };
+
+                {
+                  _frame4.debugElementStack = [];
+                }
+
+                this.stack.push(_frame4);
+                return '';
+              }
+
+            case REACT_MEMO_TYPE:
+              {
+                var _element = nextChild;
+                var _nextChildren5 = [React.createElement(elementType.type, _assign({
+                  ref: _element.ref
+                }, _element.props))];
+                var _frame5 = {
+                  type: null,
+                  domNamespace: parentNamespace,
+                  children: _nextChildren5,
+                  childIndex: 0,
+                  context: context,
+                  footer: ''
+                };
+
+                {
+                  _frame5.debugElementStack = [];
+                }
+
+                this.stack.push(_frame5);
+                return '';
+              }
+
+            case REACT_PROVIDER_TYPE:
+              {
+                var provider = nextChild;
+                var nextProps = provider.props;
+
+                var _nextChildren6 = toArray(nextProps.children);
+
+                var _frame6 = {
+                  type: provider,
+                  domNamespace: parentNamespace,
+                  children: _nextChildren6,
+                  childIndex: 0,
+                  context: context,
+                  footer: ''
+                };
+
+                {
+                  _frame6.debugElementStack = [];
+                }
+
+                this.pushProvider(provider);
+                this.stack.push(_frame6);
+                return '';
+              }
+
+            case REACT_CONTEXT_TYPE:
+              {
+                var reactContext = nextChild.type; // The logic below for Context differs depending on PROD or DEV mode. In
+                // DEV mode, we create a separate object for Context.Consumer that acts
+                // like a proxy to Context. This proxy object adds unnecessary code in PROD
+                // so we use the old behaviour (Context.Consumer references Context) to
+                // reduce size and overhead. The separate object references context via
+                // a property called "_context", which also gives us the ability to check
+                // in DEV mode if this property exists or not and warn if it does not.
+
+                {
+                  if (reactContext._context === undefined) {
+                    // This may be because it's a Context (rather than a Consumer).
+                    // Or it may be because it's older React where they're the same thing.
+                    // We only want to warn if we're sure it's a new React.
+                    if (reactContext !== reactContext.Consumer) {
+                      if (!hasWarnedAboutUsingContextAsConsumer) {
+                        hasWarnedAboutUsingContextAsConsumer = true;
+
+                        error('Rendering <Context> directly is not supported and will be removed in ' + 'a future major release. Did you mean to render <Context.Consumer> instead?');
+                      }
+                    }
+                  } else {
+                    reactContext = reactContext._context;
+                  }
+                }
+
+                var _nextProps = nextChild.props;
+                var threadID = this.threadID;
+                validateContextBounds(reactContext, threadID);
+                var nextValue = reactContext[threadID];
+
+                var _nextChildren7 = toArray(_nextProps.children(nextValue));
+
+                var _frame7 = {
+                  type: nextChild,
+                  domNamespace: parentNamespace,
+                  children: _nextChildren7,
+                  childIndex: 0,
+                  context: context,
+                  footer: ''
+                };
+
+                {
+                  _frame7.debugElementStack = [];
+                }
+
+                this.stack.push(_frame7);
+                return '';
+              }
+            // eslint-disable-next-line-no-fallthrough
+
+            case REACT_FUNDAMENTAL_TYPE:
+              {
+
+                {
+                  {
+                    throw Error( "ReactDOMServer does not yet support the fundamental API." );
+                  }
+                }
+              }
+            // eslint-disable-next-line-no-fallthrough
+
+            case REACT_LAZY_TYPE:
+              {
+                var _element2 = nextChild;
+                var lazyComponent = nextChild.type; // Attempt to initialize lazy component regardless of whether the
+                // suspense server-side renderer is enabled so synchronously
+                // resolved constructors are supported.
+
+                initializeLazyComponentType(lazyComponent);
+
+                switch (lazyComponent._status) {
+                  case Resolved:
+                    {
+                      var _nextChildren9 = [React.createElement(lazyComponent._result, _assign({
+                        ref: _element2.ref
+                      }, _element2.props))];
+                      var _frame9 = {
+                        type: null,
+                        domNamespace: parentNamespace,
+                        children: _nextChildren9,
+                        childIndex: 0,
+                        context: context,
+                        footer: ''
+                      };
+
+                      {
+                        _frame9.debugElementStack = [];
+                      }
+
+                      this.stack.push(_frame9);
+                      return '';
+                    }
+
+                  case Rejected:
+                    throw lazyComponent._result;
+
+                  case Pending:
+                  default:
+                    {
+                      {
+                        throw Error( "ReactDOMServer does not yet support lazy-loaded components." );
+                      }
+                    }
+
+                }
+              }
+            // eslint-disable-next-line-no-fallthrough
+
+            case REACT_SCOPE_TYPE:
+              {
+
+                {
+                  {
+                    throw Error( "ReactDOMServer does not yet support scope components." );
+                  }
+                }
+              }
+          }
+        }
+
+        var info = '';
+
+        {
+          var owner = nextElement._owner;
+
+          if (elementType === undefined || typeof elementType === 'object' && elementType !== null && Object.keys(elementType).length === 0) {
+            info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and " + 'named imports.';
+          }
+
+          var ownerName = owner ? getComponentName(owner) : null;
+
+          if (ownerName) {
+            info += '\n\nCheck the render method of `' + ownerName + '`.';
+          }
+        }
+
+        {
+          {
+            throw Error( "Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: " + (elementType == null ? elementType : typeof elementType) + "." + info );
+          }
+        }
+      }
+    };
+
+    _proto.renderDOM = function renderDOM(element, context, parentNamespace) {
+      var tag = element.type.toLowerCase();
+      var namespace = parentNamespace;
+
+      if (parentNamespace === Namespaces.html) {
+        namespace = getIntrinsicNamespace(tag);
+      }
+
+      {
+        if (namespace === Namespaces.html) {
+          // Should this check be gated by parent namespace? Not sure we want to
+          // allow <SVG> or <mATH>.
+          if (tag !== element.type) {
+            error('<%s /> is using incorrect casing. ' + 'Use PascalCase for React components, ' + 'or lowercase for HTML elements.', element.type);
+          }
+        }
+      }
+
+      validateDangerousTag(tag);
+      var props = element.props;
+
+      if (tag === 'input') {
+        {
+          ReactControlledValuePropTypes.checkPropTypes('input', props);
+
+          if (props.checked !== undefined && props.defaultChecked !== undefined && !didWarnDefaultChecked) {
+            error('%s contains an input of type %s with both checked and defaultChecked props. ' + 'Input elements must be either controlled or uncontrolled ' + '(specify either the checked prop, or the defaultChecked prop, but not ' + 'both). Decide between using a controlled or uncontrolled input ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components', 'A component', props.type);
+
+            didWarnDefaultChecked = true;
+          }
+
+          if (props.value !== undefined && props.defaultValue !== undefined && !didWarnDefaultInputValue) {
+            error('%s contains an input of type %s with both value and defaultValue props. ' + 'Input elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled input ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components', 'A component', props.type);
+
+            didWarnDefaultInputValue = true;
+          }
+        }
+
+        props = _assign({
+          type: undefined
+        }, props, {
+          defaultChecked: undefined,
+          defaultValue: undefined,
+          value: props.value != null ? props.value : props.defaultValue,
+          checked: props.checked != null ? props.checked : props.defaultChecked
+        });
+      } else if (tag === 'textarea') {
+        {
+          ReactControlledValuePropTypes.checkPropTypes('textarea', props);
+
+          if (props.value !== undefined && props.defaultValue !== undefined && !didWarnDefaultTextareaValue) {
+            error('Textarea elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled textarea ' + 'and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components');
+
+            didWarnDefaultTextareaValue = true;
+          }
+        }
+
+        var initialValue = props.value;
+
+        if (initialValue == null) {
+          var defaultValue = props.defaultValue; // TODO (yungsters): Remove support for children content in <textarea>.
+
+          var textareaChildren = props.children;
+
+          if (textareaChildren != null) {
+            {
+              error('Use the `defaultValue` or `value` props instead of setting ' + 'children on <textarea>.');
+            }
+
+            if (!(defaultValue == null)) {
+              {
+                throw Error( "If you supply `defaultValue` on a <textarea>, do not pass children." );
+              }
+            }
+
+            if (Array.isArray(textareaChildren)) {
+              if (!(textareaChildren.length <= 1)) {
+                {
+                  throw Error( "<textarea> can only have at most one child." );
+                }
+              }
+
+              textareaChildren = textareaChildren[0];
+            }
+
+            defaultValue = '' + textareaChildren;
+          }
+
+          if (defaultValue == null) {
+            defaultValue = '';
+          }
+
+          initialValue = defaultValue;
+        }
+
+        props = _assign({}, props, {
+          value: undefined,
+          children: '' + initialValue
+        });
+      } else if (tag === 'select') {
+        {
+          ReactControlledValuePropTypes.checkPropTypes('select', props);
+
+          for (var i = 0; i < valuePropNames.length; i++) {
+            var propName = valuePropNames[i];
+
+            if (props[propName] == null) {
+              continue;
+            }
+
+            var isArray = Array.isArray(props[propName]);
+
+            if (props.multiple && !isArray) {
+              error('The `%s` prop supplied to <select> must be an array if ' + '`multiple` is true.', propName);
+            } else if (!props.multiple && isArray) {
+              error('The `%s` prop supplied to <select> must be a scalar ' + 'value if `multiple` is false.', propName);
+            }
+          }
+
+          if (props.value !== undefined && props.defaultValue !== undefined && !didWarnDefaultSelectValue) {
+            error('Select elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled select ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components');
+
+            didWarnDefaultSelectValue = true;
+          }
+        }
+
+        this.currentSelectValue = props.value != null ? props.value : props.defaultValue;
+        props = _assign({}, props, {
+          value: undefined
+        });
+      } else if (tag === 'option') {
+        var selected = null;
+        var selectValue = this.currentSelectValue;
+        var optionChildren = flattenOptionChildren(props.children);
+
+        if (selectValue != null) {
+          var value;
+
+          if (props.value != null) {
+            value = props.value + '';
+          } else {
+            value = optionChildren;
+          }
+
+          selected = false;
+
+          if (Array.isArray(selectValue)) {
+            // multiple
+            for (var j = 0; j < selectValue.length; j++) {
+              if ('' + selectValue[j] === value) {
+                selected = true;
+                break;
+              }
+            }
+          } else {
+            selected = '' + selectValue === value;
+          }
+
+          props = _assign({
+            selected: undefined,
+            children: undefined
+          }, props, {
+            selected: selected,
+            children: optionChildren
+          });
+        }
+      }
+
+      {
+        validatePropertiesInDevelopment(tag, props);
+      }
+
+      assertValidProps(tag, props);
+      var out = createOpenTagMarkup(element.type, tag, props, namespace, this.makeStaticMarkup, this.stack.length === 1);
+      var footer = '';
+
+      if (omittedCloseTags.hasOwnProperty(tag)) {
+        out += '/>';
+      } else {
+        out += '>';
+        footer = '</' + element.type + '>';
+      }
+
+      var children;
+      var innerMarkup = getNonChildrenInnerMarkup(props);
+
+      if (innerMarkup != null) {
+        children = [];
+
+        if (newlineEatingTags.hasOwnProperty(tag) && innerMarkup.charAt(0) === '\n') {
+          // text/html ignores the first character in these tags if it's a newline
+          // Prefer to break application/xml over text/html (for now) by adding
+          // a newline specifically to get eaten by the parser. (Alternately for
+          // textareas, replacing "^\n" with "\r\n" doesn't get eaten, and the first
+          // \r is normalized out by HTMLTextAreaElement#value.)
+          // See: <http://www.w3.org/TR/html-polyglot/#newlines-in-textarea-and-pre>
+          // See: <http://www.w3.org/TR/html5/syntax.html#element-restrictions>
+          // See: <http://www.w3.org/TR/html5/syntax.html#newlines>
+          // See: Parsing of "textarea" "listing" and "pre" elements
+          //  from <http://www.w3.org/TR/html5/syntax.html#parsing-main-inbody>
+          out += '\n';
+        }
+
+        out += innerMarkup;
+      } else {
+        children = toArray(props.children);
+      }
+
+      var frame = {
+        domNamespace: getChildNamespace(parentNamespace, element.type),
+        type: tag,
+        children: children,
+        childIndex: 0,
+        context: context,
+        footer: footer
+      };
+
+      {
+        frame.debugElementStack = [];
+      }
+
+      this.stack.push(frame);
+      this.previousWasTextNode = false;
+      return out;
+    };
+
+    return ReactDOMServerRenderer;
+  }();
+
+  /**
+   * Render a ReactElement to its initial HTML. This should only be used on the
+   * server.
+   * See https://reactjs.org/docs/react-dom-server.html#rendertostring
+   */
+
+  function renderToString(element) {
+    var renderer = new ReactDOMServerRenderer(element, false);
+
+    try {
+      var markup = renderer.read(Infinity);
+      return markup;
+    } finally {
+      renderer.destroy();
+    }
+  }
+  /**
+   * Similar to renderToString, except this doesn't create extra DOM attributes
+   * such as data-react-id that React uses internally.
+   * See https://reactjs.org/docs/react-dom-server.html#rendertostaticmarkup
+   */
+
+  function renderToStaticMarkup(element) {
+    var renderer = new ReactDOMServerRenderer(element, true);
+
+    try {
+      var markup = renderer.read(Infinity);
+      return markup;
+    } finally {
+      renderer.destroy();
+    }
+  }
+
+  function renderToNodeStream() {
+    {
+      {
+        throw Error( "ReactDOMServer.renderToNodeStream(): The streaming API is not available in the browser. Use ReactDOMServer.renderToString() instead." );
+      }
+    }
+  }
+
+  function renderToStaticNodeStream() {
+    {
+      {
+        throw Error( "ReactDOMServer.renderToStaticNodeStream(): The streaming API is not available in the browser. Use ReactDOMServer.renderToStaticMarkup() instead." );
+      }
+    }
+  } // Note: when changing this, also consider https://github.com/facebook/react/issues/11526
+
+
+  var ReactDOMServer = {
+    renderToString: renderToString,
+    renderToStaticMarkup: renderToStaticMarkup,
+    renderToNodeStream: renderToNodeStream,
+    renderToStaticNodeStream: renderToStaticNodeStream,
+    version: ReactVersion
+  };
+
+  // TODO: decide on the top-level export form.
+  // This is hacky but makes it work with both Rollup and Jest
+
+
+  var server_browser = ReactDOMServer.default || ReactDOMServer;
+
+  return server_browser;
+
+})));
diff --git a/igv_component/node_modules/react-dom/umd/react-dom-server.browser.production.min.js b/igv_component/node_modules/react-dom/umd/react-dom-server.browser.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..34d7a7ba8b2720b7fb3306e6346af37802268fb2
--- /dev/null
+++ b/igv_component/node_modules/react-dom/umd/react-dom-server.browser.production.min.js
@@ -0,0 +1,45 @@
+/** @license React v16.14.0
+ * react-dom-server.browser.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';(function(k,p){"object"===typeof exports&&"undefined"!==typeof module?module.exports=p(require("react")):"function"===typeof define&&define.amd?define(["react"],p):(k=k||self,k.ReactDOMServer=p(k.React))})(this,function(k){function p(a){for(var b="https://reactjs.org/docs/error-decoder.html?invariant="+a,c=1;c<arguments.length;c++)b+="&args[]="+encodeURIComponent(arguments[c]);return"Minified React error #"+a+"; visit "+b+" for the full message or use the non-minified dev environment for full errors and additional helpful warnings."}
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+var l=Da(d.children);if(null!=f){var m=null!=d.value?d.value+"":l;e=!1;if(Array.isArray(f))for(var k=0;k<f.length;k++){if(""+f[k]===m){e=!0;break}}else e=""+f===m;d=x({selected:void 0,children:void 0},d,{selected:e,children:l})}}if(e=d){if(Ka[c]&&(null!=e.children||null!=e.dangerouslySetInnerHTML))throw Error(p(137,c,""));if(null!=e.dangerouslySetInnerHTML){if(null!=e.children)throw Error(p(60));if(!("object"===typeof e.dangerouslySetInnerHTML&&"__html"in e.dangerouslySetInnerHTML))throw Error(p(61));
+}if(null!=e.style&&"object"!==typeof e.style)throw Error(p(62,""));}e=d;f=this.makeStaticMarkup;l=1===this.stack.length;m="<"+a.type;for(w in e)if(Qa.call(e,w)){var n=e[w];if(null!=n){if("style"===w){k=void 0;var q="",u="";for(k in n)if(n.hasOwnProperty(k)){var y=0===k.indexOf("--"),r=n[k];if(null!=r){if(y)var t=k;else if(t=k,V.hasOwnProperty(t))t=V[t];else{var A=t.replace(Ma,"-$1").toLowerCase().replace(Na,"-ms-");t=V[t]=A}q+=u+t+":";u=k;y=null==r||"boolean"===typeof r||""===r?"":y||"number"!==typeof r||
+0===r||H.hasOwnProperty(u)&&H[u]?(""+r).trim():r+"px";q+=y;u=";"}}n=q||null}k=null;b:if(y=c,r=e,-1===y.indexOf("-"))y="string"===typeof r.is;else switch(y){case "annotation-xml":case "color-profile":case "font-face":case "font-face-src":case "font-face-uri":case "font-face-format":case "font-face-name":case "missing-glyph":y=!1;break b;default:y=!0}y?Ra.hasOwnProperty(w)||(k=w,k=fa(k)&&null!=n?k+'="'+(C(n)+'"'):""):k=Aa(w,n);k&&(m+=" "+k)}}f||l&&(m+=' data-reactroot=""');var w=m;e="";qa.hasOwnProperty(c)?
+w+="/>":(w+=">",e="</"+a.type+">");a:{f=d.dangerouslySetInnerHTML;if(null!=f){if(null!=f.__html){f=f.__html;break a}}else if(f=d.children,"string"===typeof f||"number"===typeof f){f=C(f);break a}f=null}null!=f?(d=[],Oa.hasOwnProperty(c)&&"\n"===f.charAt(0)&&(w+="\n"),w+=f):d=B(d.children);a=a.type;g=null==g||"http://www.w3.org/1999/xhtml"===g?oa(a):"http://www.w3.org/2000/svg"===g&&"foreignObject"===a?"http://www.w3.org/1999/xhtml":g;this.stack.push({domNamespace:g,type:c,children:d,childIndex:0,
+context:b,footer:e});this.previousWasTextNode=!1;return w};return a}();l={renderToString:function(a){a=new sa(a,!1);try{return a.read(Infinity)}finally{a.destroy()}},renderToStaticMarkup:function(a){a=new sa(a,!0);try{return a.read(Infinity)}finally{a.destroy()}},renderToNodeStream:function(){throw Error(p(207));},renderToStaticNodeStream:function(){throw Error(p(208));},version:"16.14.0"};return l.default||l});
diff --git a/igv_component/node_modules/react-dom/umd/react-dom-test-utils.development.js b/igv_component/node_modules/react-dom/umd/react-dom-test-utils.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..645f28b6ac7b879ad60b0f9798151da94110a8d0
--- /dev/null
+++ b/igv_component/node_modules/react-dom/umd/react-dom-test-utils.development.js
@@ -0,0 +1,1499 @@
+/** @license React v16.14.0
+ * react-dom-test-utils.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('react'), require('react-dom')) :
+  typeof define === 'function' && define.amd ? define(['react', 'react-dom'], factory) :
+  (global = global || self, global.ReactTestUtils = factory(global.React, global.ReactDOM));
+}(this, (function (React, ReactDOM) { 'use strict';
+
+  var ReactInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;
+  var _assign = ReactInternals.assign;
+
+  var ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED; // Prevent newer renderers from RTE when used with older react package versions.
+  // Current owner and dispatcher used to share the same ref,
+  // but PR #14548 split them out to better support the react-debug-tools package.
+
+  if (!ReactSharedInternals.hasOwnProperty('ReactCurrentDispatcher')) {
+    ReactSharedInternals.ReactCurrentDispatcher = {
+      current: null
+    };
+  }
+
+  if (!ReactSharedInternals.hasOwnProperty('ReactCurrentBatchConfig')) {
+    ReactSharedInternals.ReactCurrentBatchConfig = {
+      suspense: null
+    };
+  }
+
+  // by calls to these methods by a Babel plugin.
+  //
+  // In PROD (or in packages without access to React internals),
+  // they are left as they are instead.
+
+  function warn(format) {
+    {
+      for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+        args[_key - 1] = arguments[_key];
+      }
+
+      printWarning('warn', format, args);
+    }
+  }
+  function error(format) {
+    {
+      for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+        args[_key2 - 1] = arguments[_key2];
+      }
+
+      printWarning('error', format, args);
+    }
+  }
+
+  function printWarning(level, format, args) {
+    // When changing this logic, you might want to also
+    // update consoleWithStackDev.www.js as well.
+    {
+      var hasExistingStack = args.length > 0 && typeof args[args.length - 1] === 'string' && args[args.length - 1].indexOf('\n    in') === 0;
+
+      if (!hasExistingStack) {
+        var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+        var stack = ReactDebugCurrentFrame.getStackAddendum();
+
+        if (stack !== '') {
+          format += '%s';
+          args = args.concat([stack]);
+        }
+      }
+
+      var argsWithFormat = args.map(function (item) {
+        return '' + item;
+      }); // Careful: RN currently depends on this prefix
+
+      argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it
+      // breaks IE9: https://github.com/facebook/react/issues/13610
+      // eslint-disable-next-line react-internal/no-production-logging
+
+      Function.prototype.apply.call(console[level], console, argsWithFormat);
+
+      try {
+        // --- Welcome to debugging React ---
+        // This error was thrown as a convenience so that you can use this stack
+        // to find the callsite that caused this warning to fire.
+        var argIndex = 0;
+        var message = 'Warning: ' + format.replace(/%s/g, function () {
+          return args[argIndex++];
+        });
+        throw new Error(message);
+      } catch (x) {}
+    }
+  }
+
+  /**
+   * `ReactInstanceMap` maintains a mapping from a public facing stateful
+   * instance (key) and the internal representation (value). This allows public
+   * methods to accept the user facing instance as an argument and map them back
+   * to internal methods.
+   *
+   * Note that this module is currently shared and assumed to be stateless.
+   * If this becomes an actual Map, that will break.
+   */
+  function get(key) {
+    return key._reactInternalFiber;
+  }
+
+  var FunctionComponent = 0;
+  var ClassComponent = 1;
+
+  var HostRoot = 3; // Root of a host tree. Could be nested inside another node.
+
+  var HostComponent = 5;
+  var HostText = 6;
+
+  // Don't change these two values. They're used by React Dev Tools.
+  var NoEffect =
+  /*              */
+  0;
+
+  var Placement =
+  /*             */
+  2;
+  var Hydrating =
+  /*             */
+  1024;
+
+  var ReactCurrentOwner = ReactSharedInternals.ReactCurrentOwner;
+  function getNearestMountedFiber(fiber) {
+    var node = fiber;
+    var nearestMounted = fiber;
+
+    if (!fiber.alternate) {
+      // If there is no alternate, this might be a new tree that isn't inserted
+      // yet. If it is, then it will have a pending insertion effect on it.
+      var nextNode = node;
+
+      do {
+        node = nextNode;
+
+        if ((node.effectTag & (Placement | Hydrating)) !== NoEffect) {
+          // This is an insertion or in-progress hydration. The nearest possible
+          // mounted fiber is the parent but we need to continue to figure out
+          // if that one is still mounted.
+          nearestMounted = node.return;
+        }
+
+        nextNode = node.return;
+      } while (nextNode);
+    } else {
+      while (node.return) {
+        node = node.return;
+      }
+    }
+
+    if (node.tag === HostRoot) {
+      // TODO: Check if this was a nested HostRoot when used with
+      // renderContainerIntoSubtree.
+      return nearestMounted;
+    } // If we didn't hit the root, that means that we're in an disconnected tree
+    // that has been unmounted.
+
+
+    return null;
+  }
+
+  function assertIsMounted(fiber) {
+    if (!(getNearestMountedFiber(fiber) === fiber)) {
+      {
+        throw Error( "Unable to find node on an unmounted component." );
+      }
+    }
+  }
+
+  function findCurrentFiberUsingSlowPath(fiber) {
+    var alternate = fiber.alternate;
+
+    if (!alternate) {
+      // If there is no alternate, then we only need to check if it is mounted.
+      var nearestMounted = getNearestMountedFiber(fiber);
+
+      if (!(nearestMounted !== null)) {
+        {
+          throw Error( "Unable to find node on an unmounted component." );
+        }
+      }
+
+      if (nearestMounted !== fiber) {
+        return null;
+      }
+
+      return fiber;
+    } // If we have two possible branches, we'll walk backwards up to the root
+    // to see what path the root points to. On the way we may hit one of the
+    // special cases and we'll deal with them.
+
+
+    var a = fiber;
+    var b = alternate;
+
+    while (true) {
+      var parentA = a.return;
+
+      if (parentA === null) {
+        // We're at the root.
+        break;
+      }
+
+      var parentB = parentA.alternate;
+
+      if (parentB === null) {
+        // There is no alternate. This is an unusual case. Currently, it only
+        // happens when a Suspense component is hidden. An extra fragment fiber
+        // is inserted in between the Suspense fiber and its children. Skip
+        // over this extra fragment fiber and proceed to the next parent.
+        var nextParent = parentA.return;
+
+        if (nextParent !== null) {
+          a = b = nextParent;
+          continue;
+        } // If there's no parent, we're at the root.
+
+
+        break;
+      } // If both copies of the parent fiber point to the same child, we can
+      // assume that the child is current. This happens when we bailout on low
+      // priority: the bailed out fiber's child reuses the current child.
+
+
+      if (parentA.child === parentB.child) {
+        var child = parentA.child;
+
+        while (child) {
+          if (child === a) {
+            // We've determined that A is the current branch.
+            assertIsMounted(parentA);
+            return fiber;
+          }
+
+          if (child === b) {
+            // We've determined that B is the current branch.
+            assertIsMounted(parentA);
+            return alternate;
+          }
+
+          child = child.sibling;
+        } // We should never have an alternate for any mounting node. So the only
+        // way this could possibly happen is if this was unmounted, if at all.
+
+
+        {
+          {
+            throw Error( "Unable to find node on an unmounted component." );
+          }
+        }
+      }
+
+      if (a.return !== b.return) {
+        // The return pointer of A and the return pointer of B point to different
+        // fibers. We assume that return pointers never criss-cross, so A must
+        // belong to the child set of A.return, and B must belong to the child
+        // set of B.return.
+        a = parentA;
+        b = parentB;
+      } else {
+        // The return pointers point to the same fiber. We'll have to use the
+        // default, slow path: scan the child sets of each parent alternate to see
+        // which child belongs to which set.
+        //
+        // Search parent A's child set
+        var didFindChild = false;
+        var _child = parentA.child;
+
+        while (_child) {
+          if (_child === a) {
+            didFindChild = true;
+            a = parentA;
+            b = parentB;
+            break;
+          }
+
+          if (_child === b) {
+            didFindChild = true;
+            b = parentA;
+            a = parentB;
+            break;
+          }
+
+          _child = _child.sibling;
+        }
+
+        if (!didFindChild) {
+          // Search parent B's child set
+          _child = parentB.child;
+
+          while (_child) {
+            if (_child === a) {
+              didFindChild = true;
+              a = parentB;
+              b = parentA;
+              break;
+            }
+
+            if (_child === b) {
+              didFindChild = true;
+              b = parentB;
+              a = parentA;
+              break;
+            }
+
+            _child = _child.sibling;
+          }
+
+          if (!didFindChild) {
+            {
+              throw Error( "Child was not found in either parent set. This indicates a bug in React related to the return pointer. Please file an issue." );
+            }
+          }
+        }
+      }
+
+      if (!(a.alternate === b)) {
+        {
+          throw Error( "Return fibers should always be each others' alternates. This error is likely caused by a bug in React. Please file an issue." );
+        }
+      }
+    } // If the root is not a host container, we're in a disconnected tree. I.e.
+    // unmounted.
+
+
+    if (!(a.tag === HostRoot)) {
+      {
+        throw Error( "Unable to find node on an unmounted component." );
+      }
+    }
+
+    if (a.stateNode.current === a) {
+      // We've determined that A is the current branch.
+      return fiber;
+    } // Otherwise B has to be current branch.
+
+
+    return alternate;
+  }
+
+  var EVENT_POOL_SIZE = 10;
+  /**
+   * @interface Event
+   * @see http://www.w3.org/TR/DOM-Level-3-Events/
+   */
+
+  var EventInterface = {
+    type: null,
+    target: null,
+    // currentTarget is set when dispatching; no use in copying it here
+    currentTarget: function () {
+      return null;
+    },
+    eventPhase: null,
+    bubbles: null,
+    cancelable: null,
+    timeStamp: function (event) {
+      return event.timeStamp || Date.now();
+    },
+    defaultPrevented: null,
+    isTrusted: null
+  };
+
+  function functionThatReturnsTrue() {
+    return true;
+  }
+
+  function functionThatReturnsFalse() {
+    return false;
+  }
+  /**
+   * Synthetic events are dispatched by event plugins, typically in response to a
+   * top-level event delegation handler.
+   *
+   * These systems should generally use pooling to reduce the frequency of garbage
+   * collection. The system should check `isPersistent` to determine whether the
+   * event should be released into the pool after being dispatched. Users that
+   * need a persisted event should invoke `persist`.
+   *
+   * Synthetic events (and subclasses) implement the DOM Level 3 Events API by
+   * normalizing browser quirks. Subclasses do not necessarily have to implement a
+   * DOM interface; custom application-specific events can also subclass this.
+   *
+   * @param {object} dispatchConfig Configuration used to dispatch this event.
+   * @param {*} targetInst Marker identifying the event target.
+   * @param {object} nativeEvent Native browser event.
+   * @param {DOMEventTarget} nativeEventTarget Target node.
+   */
+
+
+  function SyntheticEvent(dispatchConfig, targetInst, nativeEvent, nativeEventTarget) {
+    {
+      // these have a getter/setter for warnings
+      delete this.nativeEvent;
+      delete this.preventDefault;
+      delete this.stopPropagation;
+      delete this.isDefaultPrevented;
+      delete this.isPropagationStopped;
+    }
+
+    this.dispatchConfig = dispatchConfig;
+    this._targetInst = targetInst;
+    this.nativeEvent = nativeEvent;
+    var Interface = this.constructor.Interface;
+
+    for (var propName in Interface) {
+      if (!Interface.hasOwnProperty(propName)) {
+        continue;
+      }
+
+      {
+        delete this[propName]; // this has a getter/setter for warnings
+      }
+
+      var normalize = Interface[propName];
+
+      if (normalize) {
+        this[propName] = normalize(nativeEvent);
+      } else {
+        if (propName === 'target') {
+          this.target = nativeEventTarget;
+        } else {
+          this[propName] = nativeEvent[propName];
+        }
+      }
+    }
+
+    var defaultPrevented = nativeEvent.defaultPrevented != null ? nativeEvent.defaultPrevented : nativeEvent.returnValue === false;
+
+    if (defaultPrevented) {
+      this.isDefaultPrevented = functionThatReturnsTrue;
+    } else {
+      this.isDefaultPrevented = functionThatReturnsFalse;
+    }
+
+    this.isPropagationStopped = functionThatReturnsFalse;
+    return this;
+  }
+
+  _assign(SyntheticEvent.prototype, {
+    preventDefault: function () {
+      this.defaultPrevented = true;
+      var event = this.nativeEvent;
+
+      if (!event) {
+        return;
+      }
+
+      if (event.preventDefault) {
+        event.preventDefault();
+      } else if (typeof event.returnValue !== 'unknown') {
+        event.returnValue = false;
+      }
+
+      this.isDefaultPrevented = functionThatReturnsTrue;
+    },
+    stopPropagation: function () {
+      var event = this.nativeEvent;
+
+      if (!event) {
+        return;
+      }
+
+      if (event.stopPropagation) {
+        event.stopPropagation();
+      } else if (typeof event.cancelBubble !== 'unknown') {
+        // The ChangeEventPlugin registers a "propertychange" event for
+        // IE. This event does not support bubbling or cancelling, and
+        // any references to cancelBubble throw "Member not found".  A
+        // typeof check of "unknown" circumvents this issue (and is also
+        // IE specific).
+        event.cancelBubble = true;
+      }
+
+      this.isPropagationStopped = functionThatReturnsTrue;
+    },
+
+    /**
+     * We release all dispatched `SyntheticEvent`s after each event loop, adding
+     * them back into the pool. This allows a way to hold onto a reference that
+     * won't be added back into the pool.
+     */
+    persist: function () {
+      this.isPersistent = functionThatReturnsTrue;
+    },
+
+    /**
+     * Checks if this event should be released back into the pool.
+     *
+     * @return {boolean} True if this should not be released, false otherwise.
+     */
+    isPersistent: functionThatReturnsFalse,
+
+    /**
+     * `PooledClass` looks for `destructor` on each instance it releases.
+     */
+    destructor: function () {
+      var Interface = this.constructor.Interface;
+
+      for (var propName in Interface) {
+        {
+          Object.defineProperty(this, propName, getPooledWarningPropertyDefinition(propName, Interface[propName]));
+        }
+      }
+
+      this.dispatchConfig = null;
+      this._targetInst = null;
+      this.nativeEvent = null;
+      this.isDefaultPrevented = functionThatReturnsFalse;
+      this.isPropagationStopped = functionThatReturnsFalse;
+      this._dispatchListeners = null;
+      this._dispatchInstances = null;
+
+      {
+        Object.defineProperty(this, 'nativeEvent', getPooledWarningPropertyDefinition('nativeEvent', null));
+        Object.defineProperty(this, 'isDefaultPrevented', getPooledWarningPropertyDefinition('isDefaultPrevented', functionThatReturnsFalse));
+        Object.defineProperty(this, 'isPropagationStopped', getPooledWarningPropertyDefinition('isPropagationStopped', functionThatReturnsFalse));
+        Object.defineProperty(this, 'preventDefault', getPooledWarningPropertyDefinition('preventDefault', function () {}));
+        Object.defineProperty(this, 'stopPropagation', getPooledWarningPropertyDefinition('stopPropagation', function () {}));
+      }
+    }
+  });
+
+  SyntheticEvent.Interface = EventInterface;
+  /**
+   * Helper to reduce boilerplate when creating subclasses.
+   */
+
+  SyntheticEvent.extend = function (Interface) {
+    var Super = this;
+
+    var E = function () {};
+
+    E.prototype = Super.prototype;
+    var prototype = new E();
+
+    function Class() {
+      return Super.apply(this, arguments);
+    }
+
+    _assign(prototype, Class.prototype);
+
+    Class.prototype = prototype;
+    Class.prototype.constructor = Class;
+    Class.Interface = _assign({}, Super.Interface, Interface);
+    Class.extend = Super.extend;
+    addEventPoolingTo(Class);
+    return Class;
+  };
+
+  addEventPoolingTo(SyntheticEvent);
+  /**
+   * Helper to nullify syntheticEvent instance properties when destructing
+   *
+   * @param {String} propName
+   * @param {?object} getVal
+   * @return {object} defineProperty object
+   */
+
+  function getPooledWarningPropertyDefinition(propName, getVal) {
+    var isFunction = typeof getVal === 'function';
+    return {
+      configurable: true,
+      set: set,
+      get: get
+    };
+
+    function set(val) {
+      var action = isFunction ? 'setting the method' : 'setting the property';
+      warn(action, 'This is effectively a no-op');
+      return val;
+    }
+
+    function get() {
+      var action = isFunction ? 'accessing the method' : 'accessing the property';
+      var result = isFunction ? 'This is a no-op function' : 'This is set to null';
+      warn(action, result);
+      return getVal;
+    }
+
+    function warn(action, result) {
+      {
+        error("This synthetic event is reused for performance reasons. If you're seeing this, " + "you're %s `%s` on a released/nullified synthetic event. %s. " + 'If you must keep the original synthetic event around, use event.persist(). ' + 'See https://fb.me/react-event-pooling for more information.', action, propName, result);
+      }
+    }
+  }
+
+  function getPooledEvent(dispatchConfig, targetInst, nativeEvent, nativeInst) {
+    var EventConstructor = this;
+
+    if (EventConstructor.eventPool.length) {
+      var instance = EventConstructor.eventPool.pop();
+      EventConstructor.call(instance, dispatchConfig, targetInst, nativeEvent, nativeInst);
+      return instance;
+    }
+
+    return new EventConstructor(dispatchConfig, targetInst, nativeEvent, nativeInst);
+  }
+
+  function releasePooledEvent(event) {
+    var EventConstructor = this;
+
+    if (!(event instanceof EventConstructor)) {
+      {
+        throw Error( "Trying to release an event instance into a pool of a different type." );
+      }
+    }
+
+    event.destructor();
+
+    if (EventConstructor.eventPool.length < EVENT_POOL_SIZE) {
+      EventConstructor.eventPool.push(event);
+    }
+  }
+
+  function addEventPoolingTo(EventConstructor) {
+    EventConstructor.eventPool = [];
+    EventConstructor.getPooled = getPooledEvent;
+    EventConstructor.release = releasePooledEvent;
+  }
+
+  /**
+   * HTML nodeType values that represent the type of the node
+   */
+  var ELEMENT_NODE = 1;
+
+  // Do not use the below two methods directly!
+  // Instead use constants exported from DOMTopLevelEventTypes in ReactDOM.
+  // (It is the only module that is allowed to access these methods.)
+  function unsafeCastStringToDOMTopLevelType(topLevelType) {
+    return topLevelType;
+  }
+
+  var canUseDOM = !!(typeof window !== 'undefined' && typeof window.document !== 'undefined' && typeof window.document.createElement !== 'undefined');
+
+  /**
+   * Generate a mapping of standard vendor prefixes using the defined style property and event name.
+   *
+   * @param {string} styleProp
+   * @param {string} eventName
+   * @returns {object}
+   */
+
+  function makePrefixMap(styleProp, eventName) {
+    var prefixes = {};
+    prefixes[styleProp.toLowerCase()] = eventName.toLowerCase();
+    prefixes['Webkit' + styleProp] = 'webkit' + eventName;
+    prefixes['Moz' + styleProp] = 'moz' + eventName;
+    return prefixes;
+  }
+  /**
+   * A list of event names to a configurable list of vendor prefixes.
+   */
+
+
+  var vendorPrefixes = {
+    animationend: makePrefixMap('Animation', 'AnimationEnd'),
+    animationiteration: makePrefixMap('Animation', 'AnimationIteration'),
+    animationstart: makePrefixMap('Animation', 'AnimationStart'),
+    transitionend: makePrefixMap('Transition', 'TransitionEnd')
+  };
+  /**
+   * Event names that have already been detected and prefixed (if applicable).
+   */
+
+  var prefixedEventNames = {};
+  /**
+   * Element to check for prefixes on.
+   */
+
+  var style = {};
+  /**
+   * Bootstrap if a DOM exists.
+   */
+
+  if (canUseDOM) {
+    style = document.createElement('div').style; // On some platforms, in particular some releases of Android 4.x,
+    // the un-prefixed "animation" and "transition" properties are defined on the
+    // style object but the events that fire will still be prefixed, so we need
+    // to check if the un-prefixed events are usable, and if not remove them from the map.
+
+    if (!('AnimationEvent' in window)) {
+      delete vendorPrefixes.animationend.animation;
+      delete vendorPrefixes.animationiteration.animation;
+      delete vendorPrefixes.animationstart.animation;
+    } // Same as above
+
+
+    if (!('TransitionEvent' in window)) {
+      delete vendorPrefixes.transitionend.transition;
+    }
+  }
+  /**
+   * Attempts to determine the correct vendor prefixed event name.
+   *
+   * @param {string} eventName
+   * @returns {string}
+   */
+
+
+  function getVendorPrefixedEventName(eventName) {
+    if (prefixedEventNames[eventName]) {
+      return prefixedEventNames[eventName];
+    } else if (!vendorPrefixes[eventName]) {
+      return eventName;
+    }
+
+    var prefixMap = vendorPrefixes[eventName];
+
+    for (var styleProp in prefixMap) {
+      if (prefixMap.hasOwnProperty(styleProp) && styleProp in style) {
+        return prefixedEventNames[eventName] = prefixMap[styleProp];
+      }
+    }
+
+    return eventName;
+  }
+
+  /**
+   * To identify top level events in ReactDOM, we use constants defined by this
+   * module. This is the only module that uses the unsafe* methods to express
+   * that the constants actually correspond to the browser event names. This lets
+   * us save some bundle size by avoiding a top level type -> event name map.
+   * The rest of ReactDOM code should import top level types from this file.
+   */
+
+  var TOP_ABORT = unsafeCastStringToDOMTopLevelType('abort');
+  var TOP_ANIMATION_END = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationend'));
+  var TOP_ANIMATION_ITERATION = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationiteration'));
+  var TOP_ANIMATION_START = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationstart'));
+  var TOP_BLUR = unsafeCastStringToDOMTopLevelType('blur');
+  var TOP_CAN_PLAY = unsafeCastStringToDOMTopLevelType('canplay');
+  var TOP_CAN_PLAY_THROUGH = unsafeCastStringToDOMTopLevelType('canplaythrough');
+  var TOP_CANCEL = unsafeCastStringToDOMTopLevelType('cancel');
+  var TOP_CHANGE = unsafeCastStringToDOMTopLevelType('change');
+  var TOP_CLICK = unsafeCastStringToDOMTopLevelType('click');
+  var TOP_CLOSE = unsafeCastStringToDOMTopLevelType('close');
+  var TOP_COMPOSITION_END = unsafeCastStringToDOMTopLevelType('compositionend');
+  var TOP_COMPOSITION_START = unsafeCastStringToDOMTopLevelType('compositionstart');
+  var TOP_COMPOSITION_UPDATE = unsafeCastStringToDOMTopLevelType('compositionupdate');
+  var TOP_CONTEXT_MENU = unsafeCastStringToDOMTopLevelType('contextmenu');
+  var TOP_COPY = unsafeCastStringToDOMTopLevelType('copy');
+  var TOP_CUT = unsafeCastStringToDOMTopLevelType('cut');
+  var TOP_DOUBLE_CLICK = unsafeCastStringToDOMTopLevelType('dblclick');
+  var TOP_DRAG = unsafeCastStringToDOMTopLevelType('drag');
+  var TOP_DRAG_END = unsafeCastStringToDOMTopLevelType('dragend');
+  var TOP_DRAG_ENTER = unsafeCastStringToDOMTopLevelType('dragenter');
+  var TOP_DRAG_EXIT = unsafeCastStringToDOMTopLevelType('dragexit');
+  var TOP_DRAG_LEAVE = unsafeCastStringToDOMTopLevelType('dragleave');
+  var TOP_DRAG_OVER = unsafeCastStringToDOMTopLevelType('dragover');
+  var TOP_DRAG_START = unsafeCastStringToDOMTopLevelType('dragstart');
+  var TOP_DROP = unsafeCastStringToDOMTopLevelType('drop');
+  var TOP_DURATION_CHANGE = unsafeCastStringToDOMTopLevelType('durationchange');
+  var TOP_EMPTIED = unsafeCastStringToDOMTopLevelType('emptied');
+  var TOP_ENCRYPTED = unsafeCastStringToDOMTopLevelType('encrypted');
+  var TOP_ENDED = unsafeCastStringToDOMTopLevelType('ended');
+  var TOP_ERROR = unsafeCastStringToDOMTopLevelType('error');
+  var TOP_FOCUS = unsafeCastStringToDOMTopLevelType('focus');
+  var TOP_INPUT = unsafeCastStringToDOMTopLevelType('input');
+  var TOP_KEY_DOWN = unsafeCastStringToDOMTopLevelType('keydown');
+  var TOP_KEY_PRESS = unsafeCastStringToDOMTopLevelType('keypress');
+  var TOP_KEY_UP = unsafeCastStringToDOMTopLevelType('keyup');
+  var TOP_LOAD = unsafeCastStringToDOMTopLevelType('load');
+  var TOP_LOAD_START = unsafeCastStringToDOMTopLevelType('loadstart');
+  var TOP_LOADED_DATA = unsafeCastStringToDOMTopLevelType('loadeddata');
+  var TOP_LOADED_METADATA = unsafeCastStringToDOMTopLevelType('loadedmetadata');
+  var TOP_MOUSE_DOWN = unsafeCastStringToDOMTopLevelType('mousedown');
+  var TOP_MOUSE_MOVE = unsafeCastStringToDOMTopLevelType('mousemove');
+  var TOP_MOUSE_OUT = unsafeCastStringToDOMTopLevelType('mouseout');
+  var TOP_MOUSE_OVER = unsafeCastStringToDOMTopLevelType('mouseover');
+  var TOP_MOUSE_UP = unsafeCastStringToDOMTopLevelType('mouseup');
+  var TOP_PASTE = unsafeCastStringToDOMTopLevelType('paste');
+  var TOP_PAUSE = unsafeCastStringToDOMTopLevelType('pause');
+  var TOP_PLAY = unsafeCastStringToDOMTopLevelType('play');
+  var TOP_PLAYING = unsafeCastStringToDOMTopLevelType('playing');
+  var TOP_PROGRESS = unsafeCastStringToDOMTopLevelType('progress');
+  var TOP_RATE_CHANGE = unsafeCastStringToDOMTopLevelType('ratechange');
+  var TOP_SCROLL = unsafeCastStringToDOMTopLevelType('scroll');
+  var TOP_SEEKED = unsafeCastStringToDOMTopLevelType('seeked');
+  var TOP_SEEKING = unsafeCastStringToDOMTopLevelType('seeking');
+  var TOP_SELECTION_CHANGE = unsafeCastStringToDOMTopLevelType('selectionchange');
+  var TOP_STALLED = unsafeCastStringToDOMTopLevelType('stalled');
+  var TOP_SUSPEND = unsafeCastStringToDOMTopLevelType('suspend');
+  var TOP_TEXT_INPUT = unsafeCastStringToDOMTopLevelType('textInput');
+  var TOP_TIME_UPDATE = unsafeCastStringToDOMTopLevelType('timeupdate');
+  var TOP_TOGGLE = unsafeCastStringToDOMTopLevelType('toggle');
+  var TOP_TOUCH_CANCEL = unsafeCastStringToDOMTopLevelType('touchcancel');
+  var TOP_TOUCH_END = unsafeCastStringToDOMTopLevelType('touchend');
+  var TOP_TOUCH_MOVE = unsafeCastStringToDOMTopLevelType('touchmove');
+  var TOP_TOUCH_START = unsafeCastStringToDOMTopLevelType('touchstart');
+  var TOP_TRANSITION_END = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('transitionend'));
+  var TOP_VOLUME_CHANGE = unsafeCastStringToDOMTopLevelType('volumechange');
+  var TOP_WAITING = unsafeCastStringToDOMTopLevelType('waiting');
+  var TOP_WHEEL = unsafeCastStringToDOMTopLevelType('wheel'); // List of events that need to be individually attached to media elements.
+
+  var PLUGIN_EVENT_SYSTEM = 1;
+
+  var didWarnAboutMessageChannel = false;
+  var enqueueTaskImpl = null;
+  function enqueueTask(task) {
+    if (enqueueTaskImpl === null) {
+      try {
+        // read require off the module object to get around the bundlers.
+        // we don't want them to detect a require and bundle a Node polyfill.
+        var requireString = ('require' + Math.random()).slice(0, 7);
+        var nodeRequire = module && module[requireString]; // assuming we're in node, let's try to get node's
+        // version of setImmediate, bypassing fake timers if any.
+
+        enqueueTaskImpl = nodeRequire('timers').setImmediate;
+      } catch (_err) {
+        // we're in a browser
+        // we can't use regular timers because they may still be faked
+        // so we try MessageChannel+postMessage instead
+        enqueueTaskImpl = function (callback) {
+          {
+            if (didWarnAboutMessageChannel === false) {
+              didWarnAboutMessageChannel = true;
+
+              if (typeof MessageChannel === 'undefined') {
+                error('This browser does not have a MessageChannel implementation, ' + 'so enqueuing tasks via await act(async () => ...) will fail. ' + 'Please file an issue at https://github.com/facebook/react/issues ' + 'if you encounter this warning.');
+              }
+            }
+          }
+
+          var channel = new MessageChannel();
+          channel.port1.onmessage = callback;
+          channel.port2.postMessage(undefined);
+        };
+      }
+    }
+
+    return enqueueTaskImpl(task);
+  }
+
+  var ReactInternals$1 = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;
+  var _ReactInternals$Sched = ReactInternals$1.Scheduler,
+      unstable_cancelCallback = _ReactInternals$Sched.unstable_cancelCallback,
+      unstable_now = _ReactInternals$Sched.unstable_now,
+      unstable_scheduleCallback = _ReactInternals$Sched.unstable_scheduleCallback,
+      unstable_shouldYield = _ReactInternals$Sched.unstable_shouldYield,
+      unstable_requestPaint = _ReactInternals$Sched.unstable_requestPaint,
+      unstable_getFirstCallbackNode = _ReactInternals$Sched.unstable_getFirstCallbackNode,
+      unstable_runWithPriority = _ReactInternals$Sched.unstable_runWithPriority,
+      unstable_next = _ReactInternals$Sched.unstable_next,
+      unstable_continueExecution = _ReactInternals$Sched.unstable_continueExecution,
+      unstable_pauseExecution = _ReactInternals$Sched.unstable_pauseExecution,
+      unstable_getCurrentPriorityLevel = _ReactInternals$Sched.unstable_getCurrentPriorityLevel,
+      unstable_ImmediatePriority = _ReactInternals$Sched.unstable_ImmediatePriority,
+      unstable_UserBlockingPriority = _ReactInternals$Sched.unstable_UserBlockingPriority,
+      unstable_NormalPriority = _ReactInternals$Sched.unstable_NormalPriority,
+      unstable_LowPriority = _ReactInternals$Sched.unstable_LowPriority,
+      unstable_IdlePriority = _ReactInternals$Sched.unstable_IdlePriority,
+      unstable_forceFrameRate = _ReactInternals$Sched.unstable_forceFrameRate,
+      unstable_flushAllWithoutAsserting = _ReactInternals$Sched.unstable_flushAllWithoutAsserting;
+
+  // ReactDOM.js, and ReactTestUtils.js:
+
+  var _ReactDOM$__SECRET_IN = ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Events,
+
+  /* eslint-disable no-unused-vars */
+  getInstanceFromNode = _ReactDOM$__SECRET_IN[0],
+      getNodeFromInstance = _ReactDOM$__SECRET_IN[1],
+      getFiberCurrentPropsFromNode = _ReactDOM$__SECRET_IN[2],
+      injectEventPluginsByName = _ReactDOM$__SECRET_IN[3],
+      eventNameDispatchConfigs = _ReactDOM$__SECRET_IN[4],
+      accumulateTwoPhaseDispatches = _ReactDOM$__SECRET_IN[5],
+      accumulateDirectDispatches = _ReactDOM$__SECRET_IN[6],
+      enqueueStateRestore = _ReactDOM$__SECRET_IN[7],
+      restoreStateIfNeeded = _ReactDOM$__SECRET_IN[8],
+      dispatchEvent = _ReactDOM$__SECRET_IN[9],
+      runEventsInBatch = _ReactDOM$__SECRET_IN[10],
+
+  /* eslint-enable no-unused-vars */
+  flushPassiveEffects = _ReactDOM$__SECRET_IN[11],
+      IsThisRendererActing = _ReactDOM$__SECRET_IN[12];
+  var batchedUpdates = ReactDOM.unstable_batchedUpdates;
+  var IsSomeRendererActing = ReactSharedInternals.IsSomeRendererActing; // this implementation should be exactly the same in
+  // ReactTestUtilsAct.js, ReactTestRendererAct.js, createReactNoop.js
+
+  var isSchedulerMocked = typeof unstable_flushAllWithoutAsserting === 'function';
+
+  var flushWork = unstable_flushAllWithoutAsserting || function () {
+    var didFlushWork = false;
+
+    while (flushPassiveEffects()) {
+      didFlushWork = true;
+    }
+
+    return didFlushWork;
+  };
+
+  function flushWorkAndMicroTasks(onDone) {
+    try {
+      flushWork();
+      enqueueTask(function () {
+        if (flushWork()) {
+          flushWorkAndMicroTasks(onDone);
+        } else {
+          onDone();
+        }
+      });
+    } catch (err) {
+      onDone(err);
+    }
+  } // we track the 'depth' of the act() calls with this counter,
+  // so we can tell if any async act() calls try to run in parallel.
+
+
+  var actingUpdatesScopeDepth = 0;
+
+  function act(callback) {
+
+    var previousActingUpdatesScopeDepth = actingUpdatesScopeDepth;
+    var previousIsSomeRendererActing;
+    var previousIsThisRendererActing;
+    actingUpdatesScopeDepth++;
+    previousIsSomeRendererActing = IsSomeRendererActing.current;
+    previousIsThisRendererActing = IsThisRendererActing.current;
+    IsSomeRendererActing.current = true;
+    IsThisRendererActing.current = true;
+
+    function onDone() {
+      actingUpdatesScopeDepth--;
+      IsSomeRendererActing.current = previousIsSomeRendererActing;
+      IsThisRendererActing.current = previousIsThisRendererActing;
+
+      {
+        if (actingUpdatesScopeDepth > previousActingUpdatesScopeDepth) {
+          // if it's _less than_ previousActingUpdatesScopeDepth, then we can assume the 'other' one has warned
+          error('You seem to have overlapping act() calls, this is not supported. ' + 'Be sure to await previous act() calls before making a new one. ');
+        }
+      }
+    }
+
+    var result;
+
+    try {
+      result = batchedUpdates(callback);
+    } catch (error) {
+      // on sync errors, we still want to 'cleanup' and decrement actingUpdatesScopeDepth
+      onDone();
+      throw error;
+    }
+
+    if (result !== null && typeof result === 'object' && typeof result.then === 'function') {
+      // setup a boolean that gets set to true only
+      // once this act() call is await-ed
+      var called = false;
+
+      {
+        if (typeof Promise !== 'undefined') {
+          //eslint-disable-next-line no-undef
+          Promise.resolve().then(function () {}).then(function () {
+            if (called === false) {
+              error('You called act(async () => ...) without await. ' + 'This could lead to unexpected testing behaviour, interleaving multiple act ' + 'calls and mixing their scopes. You should - await act(async () => ...);');
+            }
+          });
+        }
+      } // in the async case, the returned thenable runs the callback, flushes
+      // effects and  microtasks in a loop until flushPassiveEffects() === false,
+      // and cleans up
+
+
+      return {
+        then: function (resolve, reject) {
+          called = true;
+          result.then(function () {
+            if (actingUpdatesScopeDepth > 1 || isSchedulerMocked === true && previousIsSomeRendererActing === true) {
+              onDone();
+              resolve();
+              return;
+            } // we're about to exit the act() scope,
+            // now's the time to flush tasks/effects
+
+
+            flushWorkAndMicroTasks(function (err) {
+              onDone();
+
+              if (err) {
+                reject(err);
+              } else {
+                resolve();
+              }
+            });
+          }, function (err) {
+            onDone();
+            reject(err);
+          });
+        }
+      };
+    } else {
+      {
+        if (result !== undefined) {
+          error('The callback passed to act(...) function ' + 'must return undefined, or a Promise. You returned %s', result);
+        }
+      } // flush effects until none remain, and cleanup
+
+
+      try {
+        if (actingUpdatesScopeDepth === 1 && (isSchedulerMocked === false || previousIsSomeRendererActing === false)) {
+          // we're about to exit the act() scope,
+          // now's the time to flush effects
+          flushWork();
+        }
+
+        onDone();
+      } catch (err) {
+        onDone();
+        throw err;
+      } // in the sync case, the returned thenable only warns *if* await-ed
+
+
+      return {
+        then: function (resolve) {
+          {
+            error('Do not await the result of calling act(...) with sync logic, it is not a Promise.');
+          }
+
+          resolve();
+        }
+      };
+    }
+  }
+
+  var findDOMNode = ReactDOM.findDOMNode; // Keep in sync with ReactDOMUnstableNativeDependencies.js
+  // ReactDOM.js, and ReactTestUtilsAct.js:
+
+  var _ReactDOM$__SECRET_IN$1 = ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Events,
+      getInstanceFromNode$1 = _ReactDOM$__SECRET_IN$1[0],
+
+  /* eslint-disable no-unused-vars */
+  getNodeFromInstance$1 = _ReactDOM$__SECRET_IN$1[1],
+      getFiberCurrentPropsFromNode$1 = _ReactDOM$__SECRET_IN$1[2],
+      injectEventPluginsByName$1 = _ReactDOM$__SECRET_IN$1[3],
+
+  /* eslint-enable no-unused-vars */
+  eventNameDispatchConfigs$1 = _ReactDOM$__SECRET_IN$1[4],
+      accumulateTwoPhaseDispatches$1 = _ReactDOM$__SECRET_IN$1[5],
+      accumulateDirectDispatches$1 = _ReactDOM$__SECRET_IN$1[6],
+      enqueueStateRestore$1 = _ReactDOM$__SECRET_IN$1[7],
+      restoreStateIfNeeded$1 = _ReactDOM$__SECRET_IN$1[8],
+      dispatchEvent$1 = _ReactDOM$__SECRET_IN$1[9],
+      runEventsInBatch$1 = _ReactDOM$__SECRET_IN$1[10],
+
+  /* eslint-disable no-unused-vars */
+  flushPassiveEffects$1 = _ReactDOM$__SECRET_IN$1[11],
+      IsThisRendererActing$1
+  /* eslint-enable no-unused-vars */
+  = _ReactDOM$__SECRET_IN$1[12];
+
+  function Event(suffix) {}
+
+  var hasWarnedAboutDeprecatedMockComponent = false;
+  /**
+   * @class ReactTestUtils
+   */
+
+  /**
+   * Simulates a top level event being dispatched from a raw event that occurred
+   * on an `Element` node.
+   * @param {number} topLevelType A number from `TopLevelEventTypes`
+   * @param {!Element} node The dom to simulate an event occurring on.
+   * @param {?Event} fakeNativeEvent Fake native event to use in SyntheticEvent.
+   */
+
+  function simulateNativeEventOnNode(topLevelType, node, fakeNativeEvent) {
+    fakeNativeEvent.target = node;
+    dispatchEvent$1(topLevelType, PLUGIN_EVENT_SYSTEM, document, fakeNativeEvent);
+  }
+  /**
+   * Simulates a top level event being dispatched from a raw event that occurred
+   * on the `ReactDOMComponent` `comp`.
+   * @param {Object} topLevelType A type from `BrowserEventConstants.topLevelTypes`.
+   * @param {!ReactDOMComponent} comp
+   * @param {?Event} fakeNativeEvent Fake native event to use in SyntheticEvent.
+   */
+
+
+  function simulateNativeEventOnDOMComponent(topLevelType, comp, fakeNativeEvent) {
+    simulateNativeEventOnNode(topLevelType, findDOMNode(comp), fakeNativeEvent);
+  }
+
+  function findAllInRenderedFiberTreeInternal(fiber, test) {
+    if (!fiber) {
+      return [];
+    }
+
+    var currentParent = findCurrentFiberUsingSlowPath(fiber);
+
+    if (!currentParent) {
+      return [];
+    }
+
+    var node = currentParent;
+    var ret = [];
+
+    while (true) {
+      if (node.tag === HostComponent || node.tag === HostText || node.tag === ClassComponent || node.tag === FunctionComponent) {
+        var publicInst = node.stateNode;
+
+        if (test(publicInst)) {
+          ret.push(publicInst);
+        }
+      }
+
+      if (node.child) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+
+      if (node === currentParent) {
+        return ret;
+      }
+
+      while (!node.sibling) {
+        if (!node.return || node.return === currentParent) {
+          return ret;
+        }
+
+        node = node.return;
+      }
+
+      node.sibling.return = node.return;
+      node = node.sibling;
+    }
+  }
+
+  function validateClassInstance(inst, methodName) {
+    if (!inst) {
+      // This is probably too relaxed but it's existing behavior.
+      return;
+    }
+
+    if (get(inst)) {
+      // This is a public instance indeed.
+      return;
+    }
+
+    var received;
+    var stringified = '' + inst;
+
+    if (Array.isArray(inst)) {
+      received = 'an array';
+    } else if (inst && inst.nodeType === ELEMENT_NODE && inst.tagName) {
+      received = 'a DOM node';
+    } else if (stringified === '[object Object]') {
+      received = 'object with keys {' + Object.keys(inst).join(', ') + '}';
+    } else {
+      received = stringified;
+    }
+
+    {
+      {
+        throw Error( methodName + "(...): the first argument must be a React class instance. Instead received: " + received + "." );
+      }
+    }
+  }
+  /**
+   * Utilities for making it easy to test React components.
+   *
+   * See https://reactjs.org/docs/test-utils.html
+   *
+   * Todo: Support the entire DOM.scry query syntax. For now, these simple
+   * utilities will suffice for testing purposes.
+   * @lends ReactTestUtils
+   */
+
+
+  var ReactTestUtils = {
+    renderIntoDocument: function (element) {
+      var div = document.createElement('div'); // None of our tests actually require attaching the container to the
+      // DOM, and doing so creates a mess that we rely on test isolation to
+      // clean up, so we're going to stop honoring the name of this method
+      // (and probably rename it eventually) if no problems arise.
+      // document.documentElement.appendChild(div);
+
+      return ReactDOM.render(element, div);
+    },
+    isElement: function (element) {
+      return React.isValidElement(element);
+    },
+    isElementOfType: function (inst, convenienceConstructor) {
+      return React.isValidElement(inst) && inst.type === convenienceConstructor;
+    },
+    isDOMComponent: function (inst) {
+      return !!(inst && inst.nodeType === ELEMENT_NODE && inst.tagName);
+    },
+    isDOMComponentElement: function (inst) {
+      return !!(inst && React.isValidElement(inst) && !!inst.tagName);
+    },
+    isCompositeComponent: function (inst) {
+      if (ReactTestUtils.isDOMComponent(inst)) {
+        // Accessing inst.setState warns; just return false as that'll be what
+        // this returns when we have DOM nodes as refs directly
+        return false;
+      }
+
+      return inst != null && typeof inst.render === 'function' && typeof inst.setState === 'function';
+    },
+    isCompositeComponentWithType: function (inst, type) {
+      if (!ReactTestUtils.isCompositeComponent(inst)) {
+        return false;
+      }
+
+      var internalInstance = get(inst);
+      var constructor = internalInstance.type;
+      return constructor === type;
+    },
+    findAllInRenderedTree: function (inst, test) {
+      validateClassInstance(inst, 'findAllInRenderedTree');
+
+      if (!inst) {
+        return [];
+      }
+
+      var internalInstance = get(inst);
+      return findAllInRenderedFiberTreeInternal(internalInstance, test);
+    },
+
+    /**
+     * Finds all instance of components in the rendered tree that are DOM
+     * components with the class name matching `className`.
+     * @return {array} an array of all the matches.
+     */
+    scryRenderedDOMComponentsWithClass: function (root, classNames) {
+      validateClassInstance(root, 'scryRenderedDOMComponentsWithClass');
+      return ReactTestUtils.findAllInRenderedTree(root, function (inst) {
+        if (ReactTestUtils.isDOMComponent(inst)) {
+          var className = inst.className;
+
+          if (typeof className !== 'string') {
+            // SVG, probably.
+            className = inst.getAttribute('class') || '';
+          }
+
+          var classList = className.split(/\s+/);
+
+          if (!Array.isArray(classNames)) {
+            if (!(classNames !== undefined)) {
+              {
+                throw Error( "TestUtils.scryRenderedDOMComponentsWithClass expects a className as a second argument." );
+              }
+            }
+
+            classNames = classNames.split(/\s+/);
+          }
+
+          return classNames.every(function (name) {
+            return classList.indexOf(name) !== -1;
+          });
+        }
+
+        return false;
+      });
+    },
+
+    /**
+     * Like scryRenderedDOMComponentsWithClass but expects there to be one result,
+     * and returns that one result, or throws exception if there is any other
+     * number of matches besides one.
+     * @return {!ReactDOMComponent} The one match.
+     */
+    findRenderedDOMComponentWithClass: function (root, className) {
+      validateClassInstance(root, 'findRenderedDOMComponentWithClass');
+      var all = ReactTestUtils.scryRenderedDOMComponentsWithClass(root, className);
+
+      if (all.length !== 1) {
+        throw new Error('Did not find exactly one match (found: ' + all.length + ') ' + 'for class:' + className);
+      }
+
+      return all[0];
+    },
+
+    /**
+     * Finds all instance of components in the rendered tree that are DOM
+     * components with the tag name matching `tagName`.
+     * @return {array} an array of all the matches.
+     */
+    scryRenderedDOMComponentsWithTag: function (root, tagName) {
+      validateClassInstance(root, 'scryRenderedDOMComponentsWithTag');
+      return ReactTestUtils.findAllInRenderedTree(root, function (inst) {
+        return ReactTestUtils.isDOMComponent(inst) && inst.tagName.toUpperCase() === tagName.toUpperCase();
+      });
+    },
+
+    /**
+     * Like scryRenderedDOMComponentsWithTag but expects there to be one result,
+     * and returns that one result, or throws exception if there is any other
+     * number of matches besides one.
+     * @return {!ReactDOMComponent} The one match.
+     */
+    findRenderedDOMComponentWithTag: function (root, tagName) {
+      validateClassInstance(root, 'findRenderedDOMComponentWithTag');
+      var all = ReactTestUtils.scryRenderedDOMComponentsWithTag(root, tagName);
+
+      if (all.length !== 1) {
+        throw new Error('Did not find exactly one match (found: ' + all.length + ') ' + 'for tag:' + tagName);
+      }
+
+      return all[0];
+    },
+
+    /**
+     * Finds all instances of components with type equal to `componentType`.
+     * @return {array} an array of all the matches.
+     */
+    scryRenderedComponentsWithType: function (root, componentType) {
+      validateClassInstance(root, 'scryRenderedComponentsWithType');
+      return ReactTestUtils.findAllInRenderedTree(root, function (inst) {
+        return ReactTestUtils.isCompositeComponentWithType(inst, componentType);
+      });
+    },
+
+    /**
+     * Same as `scryRenderedComponentsWithType` but expects there to be one result
+     * and returns that one result, or throws exception if there is any other
+     * number of matches besides one.
+     * @return {!ReactComponent} The one match.
+     */
+    findRenderedComponentWithType: function (root, componentType) {
+      validateClassInstance(root, 'findRenderedComponentWithType');
+      var all = ReactTestUtils.scryRenderedComponentsWithType(root, componentType);
+
+      if (all.length !== 1) {
+        throw new Error('Did not find exactly one match (found: ' + all.length + ') ' + 'for componentType:' + componentType);
+      }
+
+      return all[0];
+    },
+
+    /**
+     * Pass a mocked component module to this method to augment it with
+     * useful methods that allow it to be used as a dummy React component.
+     * Instead of rendering as usual, the component will become a simple
+     * <div> containing any provided children.
+     *
+     * @param {object} module the mock function object exported from a
+     *                        module that defines the component to be mocked
+     * @param {?string} mockTagName optional dummy root tag name to return
+     *                              from render method (overrides
+     *                              module.mockTagName if provided)
+     * @return {object} the ReactTestUtils object (for chaining)
+     */
+    mockComponent: function (module, mockTagName) {
+      {
+        if (!hasWarnedAboutDeprecatedMockComponent) {
+          hasWarnedAboutDeprecatedMockComponent = true;
+
+          warn('ReactTestUtils.mockComponent() is deprecated. ' + 'Use shallow rendering or jest.mock() instead.\n\n' + 'See https://fb.me/test-utils-mock-component for more information.');
+        }
+      }
+
+      mockTagName = mockTagName || module.mockTagName || 'div';
+      module.prototype.render.mockImplementation(function () {
+        return React.createElement(mockTagName, null, this.props.children);
+      });
+      return this;
+    },
+    nativeTouchData: function (x, y) {
+      return {
+        touches: [{
+          pageX: x,
+          pageY: y
+        }]
+      };
+    },
+    Simulate: null,
+    SimulateNative: {},
+    act: act
+  };
+  /**
+   * Exports:
+   *
+   * - `ReactTestUtils.Simulate.click(Element)`
+   * - `ReactTestUtils.Simulate.mouseMove(Element)`
+   * - `ReactTestUtils.Simulate.change(Element)`
+   * - ... (All keys from event plugin `eventTypes` objects)
+   */
+
+  function makeSimulator(eventType) {
+    return function (domNode, eventData) {
+      if (!!React.isValidElement(domNode)) {
+        {
+          throw Error( "TestUtils.Simulate expected a DOM node as the first argument but received a React element. Pass the DOM node you wish to simulate the event on instead. Note that TestUtils.Simulate will not work if you are using shallow rendering." );
+        }
+      }
+
+      if (!!ReactTestUtils.isCompositeComponent(domNode)) {
+        {
+          throw Error( "TestUtils.Simulate expected a DOM node as the first argument but received a component instance. Pass the DOM node you wish to simulate the event on instead." );
+        }
+      }
+
+      var dispatchConfig = eventNameDispatchConfigs$1[eventType];
+      var fakeNativeEvent = new Event();
+      fakeNativeEvent.target = domNode;
+      fakeNativeEvent.type = eventType.toLowerCase(); // We don't use SyntheticEvent.getPooled in order to not have to worry about
+      // properly destroying any properties assigned from `eventData` upon release
+
+      var targetInst = getInstanceFromNode$1(domNode);
+      var event = new SyntheticEvent(dispatchConfig, targetInst, fakeNativeEvent, domNode); // Since we aren't using pooling, always persist the event. This will make
+      // sure it's marked and won't warn when setting additional properties.
+
+      event.persist();
+
+      _assign(event, eventData);
+
+      if (dispatchConfig.phasedRegistrationNames) {
+        accumulateTwoPhaseDispatches$1(event);
+      } else {
+        accumulateDirectDispatches$1(event);
+      }
+
+      ReactDOM.unstable_batchedUpdates(function () {
+        // Normally extractEvent enqueues a state restore, but we'll just always
+        // do that since we're by-passing it here.
+        enqueueStateRestore$1(domNode);
+        runEventsInBatch$1(event);
+      });
+      restoreStateIfNeeded$1();
+    };
+  }
+
+  function buildSimulators() {
+    ReactTestUtils.Simulate = {};
+    var eventType;
+
+    for (eventType in eventNameDispatchConfigs$1) {
+      /**
+       * @param {!Element|ReactDOMComponent} domComponentOrNode
+       * @param {?object} eventData Fake event data to use in SyntheticEvent.
+       */
+      ReactTestUtils.Simulate[eventType] = makeSimulator(eventType);
+    }
+  }
+
+  buildSimulators();
+  /**
+   * Exports:
+   *
+   * - `ReactTestUtils.SimulateNative.click(Element/ReactDOMComponent)`
+   * - `ReactTestUtils.SimulateNative.mouseMove(Element/ReactDOMComponent)`
+   * - `ReactTestUtils.SimulateNative.mouseIn/ReactDOMComponent)`
+   * - `ReactTestUtils.SimulateNative.mouseOut(Element/ReactDOMComponent)`
+   * - ... (All keys from `BrowserEventConstants.topLevelTypes`)
+   *
+   * Note: Top level event types are a subset of the entire set of handler types
+   * (which include a broader set of "synthetic" events). For example, onDragDone
+   * is a synthetic event. Except when testing an event plugin or React's event
+   * handling code specifically, you probably want to use ReactTestUtils.Simulate
+   * to dispatch synthetic events.
+   */
+
+  function makeNativeSimulator(eventType, topLevelType) {
+    return function (domComponentOrNode, nativeEventData) {
+      var fakeNativeEvent = new Event(eventType);
+
+      _assign(fakeNativeEvent, nativeEventData);
+
+      if (ReactTestUtils.isDOMComponent(domComponentOrNode)) {
+        simulateNativeEventOnDOMComponent(topLevelType, domComponentOrNode, fakeNativeEvent);
+      } else if (domComponentOrNode.tagName) {
+        // Will allow on actual dom nodes.
+        simulateNativeEventOnNode(topLevelType, domComponentOrNode, fakeNativeEvent);
+      }
+    };
+  }
+
+  [[TOP_ABORT, 'abort'], [TOP_ANIMATION_END, 'animationEnd'], [TOP_ANIMATION_ITERATION, 'animationIteration'], [TOP_ANIMATION_START, 'animationStart'], [TOP_BLUR, 'blur'], [TOP_CAN_PLAY_THROUGH, 'canPlayThrough'], [TOP_CAN_PLAY, 'canPlay'], [TOP_CANCEL, 'cancel'], [TOP_CHANGE, 'change'], [TOP_CLICK, 'click'], [TOP_CLOSE, 'close'], [TOP_COMPOSITION_END, 'compositionEnd'], [TOP_COMPOSITION_START, 'compositionStart'], [TOP_COMPOSITION_UPDATE, 'compositionUpdate'], [TOP_CONTEXT_MENU, 'contextMenu'], [TOP_COPY, 'copy'], [TOP_CUT, 'cut'], [TOP_DOUBLE_CLICK, 'doubleClick'], [TOP_DRAG_END, 'dragEnd'], [TOP_DRAG_ENTER, 'dragEnter'], [TOP_DRAG_EXIT, 'dragExit'], [TOP_DRAG_LEAVE, 'dragLeave'], [TOP_DRAG_OVER, 'dragOver'], [TOP_DRAG_START, 'dragStart'], [TOP_DRAG, 'drag'], [TOP_DROP, 'drop'], [TOP_DURATION_CHANGE, 'durationChange'], [TOP_EMPTIED, 'emptied'], [TOP_ENCRYPTED, 'encrypted'], [TOP_ENDED, 'ended'], [TOP_ERROR, 'error'], [TOP_FOCUS, 'focus'], [TOP_INPUT, 'input'], [TOP_KEY_DOWN, 'keyDown'], [TOP_KEY_PRESS, 'keyPress'], [TOP_KEY_UP, 'keyUp'], [TOP_LOAD_START, 'loadStart'], [TOP_LOAD_START, 'loadStart'], [TOP_LOAD, 'load'], [TOP_LOADED_DATA, 'loadedData'], [TOP_LOADED_METADATA, 'loadedMetadata'], [TOP_MOUSE_DOWN, 'mouseDown'], [TOP_MOUSE_MOVE, 'mouseMove'], [TOP_MOUSE_OUT, 'mouseOut'], [TOP_MOUSE_OVER, 'mouseOver'], [TOP_MOUSE_UP, 'mouseUp'], [TOP_PASTE, 'paste'], [TOP_PAUSE, 'pause'], [TOP_PLAY, 'play'], [TOP_PLAYING, 'playing'], [TOP_PROGRESS, 'progress'], [TOP_RATE_CHANGE, 'rateChange'], [TOP_SCROLL, 'scroll'], [TOP_SEEKED, 'seeked'], [TOP_SEEKING, 'seeking'], [TOP_SELECTION_CHANGE, 'selectionChange'], [TOP_STALLED, 'stalled'], [TOP_SUSPEND, 'suspend'], [TOP_TEXT_INPUT, 'textInput'], [TOP_TIME_UPDATE, 'timeUpdate'], [TOP_TOGGLE, 'toggle'], [TOP_TOUCH_CANCEL, 'touchCancel'], [TOP_TOUCH_END, 'touchEnd'], [TOP_TOUCH_MOVE, 'touchMove'], [TOP_TOUCH_START, 'touchStart'], [TOP_TRANSITION_END, 'transitionEnd'], [TOP_VOLUME_CHANGE, 'volumeChange'], [TOP_WAITING, 'waiting'], [TOP_WHEEL, 'wheel']].forEach(function (_ref) {
+    var topLevelType = _ref[0],
+        eventType = _ref[1];
+
+    /**
+     * @param {!Element|ReactDOMComponent} domComponentOrNode
+     * @param {?Event} nativeEventData Fake native event to use in SyntheticEvent.
+     */
+    ReactTestUtils.SimulateNative[eventType] = makeNativeSimulator(eventType, topLevelType);
+  });
+
+  // TODO: decide on the top-level export form.
+  // This is hacky but makes it work with both Rollup and Jest.
+
+
+  var testUtils = ReactTestUtils.default || ReactTestUtils;
+
+  return testUtils;
+
+})));
diff --git a/igv_component/node_modules/react-dom/umd/react-dom-test-utils.production.min.js b/igv_component/node_modules/react-dom/umd/react-dom-test-utils.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..af0ef98469b81262fcc0cf1cfe8eadab3bc5e7b3
--- /dev/null
+++ b/igv_component/node_modules/react-dom/umd/react-dom-test-utils.production.min.js
@@ -0,0 +1,30 @@
+/** @license React v16.14.0
+ * react-dom-test-utils.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';(function(k,n){"object"===typeof exports&&"undefined"!==typeof module?module.exports=n(require("react"),require("react-dom")):"function"===typeof define&&define.amd?define(["react","react-dom"],n):(k=k||self,k.ReactTestUtils=n(k.React,k.ReactDOM))})(this,function(k,n){function l(a){for(var b="https://reactjs.org/docs/error-decoder.html?invariant="+a,c=1;c<arguments.length;c++)b+="&args[]="+encodeURIComponent(arguments[c]);return"Minified React error #"+a+"; visit "+b+" for the full message or use the non-minified dev environment for full errors and additional helpful warnings."}
+function F(a){var b=a,c=a;if(a.alternate)for(;b.return;)b=b.return;else{a=b;do b=a,0!==(b.effectTag&1026)&&(c=b.return),a=b.return;while(a)}return 3===b.tag?c:null}function G(a){if(F(a)!==a)throw Error(l(188));}function R(a){var b=a.alternate;if(!b){b=F(a);if(null===b)throw Error(l(188));return b!==a?null:a}for(var c=a,e=b;;){var d=c.return;if(null===d)break;var g=d.alternate;if(null===g){e=d.return;if(null!==e){c=e;continue}break}if(d.child===g.child){for(g=d.child;g;){if(g===c)return G(d),a;if(g===
+e)return G(d),b;g=g.sibling}throw Error(l(188));}if(c.return!==e.return)c=d,e=g;else{for(var f=!1,m=d.child;m;){if(m===c){f=!0;c=d;e=g;break}if(m===e){f=!0;e=d;c=g;break}m=m.sibling}if(!f){for(m=g.child;m;){if(m===c){f=!0;c=g;e=d;break}if(m===e){f=!0;e=g;c=d;break}m=m.sibling}if(!f)throw Error(l(189));}}if(c.alternate!==e)throw Error(l(190));}if(3!==c.tag)throw Error(l(188));return c.stateNode.current===c?a:b}function u(){return!0}function v(){return!1}function r(a,b,c,e){this.dispatchConfig=a;this._targetInst=
+b;this.nativeEvent=c;a=this.constructor.Interface;for(var d in a)a.hasOwnProperty(d)&&((b=a[d])?this[d]=b(c):"target"===d?this.target=e:this[d]=c[d]);this.isDefaultPrevented=(null!=c.defaultPrevented?c.defaultPrevented:!1===c.returnValue)?u:v;this.isPropagationStopped=v;return this}function S(a,b,c,e){if(this.eventPool.length){var d=this.eventPool.pop();this.call(d,a,b,c,e);return d}return new this(a,b,c,e)}function T(a){if(!(a instanceof this))throw Error(l(279));a.destructor();10>this.eventPool.length&&
+this.eventPool.push(a)}function H(a){a.eventPool=[];a.getPooled=S;a.release=T}function w(a,b){var c={};c[a.toLowerCase()]=b.toLowerCase();c["Webkit"+a]="webkit"+b;c["Moz"+a]="moz"+b;return c}function x(a){if(A[a])return A[a];if(!q[a])return a;var b=q[a],c;for(c in b)if(b.hasOwnProperty(c)&&c in I)return A[a]=b[c];return a}function U(a){if(null===y)try{var b=("require"+Math.random()).slice(0,7);y=(module&&module[b])("timers").setImmediate}catch(c){y=function(a){var b=new MessageChannel;b.port1.onmessage=
+a;b.port2.postMessage(void 0)}}return y(a)}function J(a){try{B(),U(function(){B()?J(a):a()})}catch(b){a(b)}}function K(a){}function V(a,b){if(!a)return[];a=R(a);if(!a)return[];for(var c=a,e=[];;){if(5===c.tag||6===c.tag||1===c.tag||0===c.tag){var d=c.stateNode;b(d)&&e.push(d)}if(c.child)c.child.return=c,c=c.child;else{if(c===a)return e;for(;!c.sibling;){if(!c.return||c.return===a)return e;c=c.return}c.sibling.return=c.return;c=c.sibling}}}function p(a,b){if(a&&!a._reactInternalFiber){var c=""+a;a=
+Array.isArray(a)?"an array":a&&1===a.nodeType&&a.tagName?"a DOM node":"[object Object]"===c?"object with keys {"+Object.keys(a).join(", ")+"}":c;throw Error(l(286,b,a));}}function W(a){return function(b,c){if(k.isValidElement(b))throw Error(l(228));if(f.isCompositeComponent(b))throw Error(l(229));var e=L[a],d=new K;d.target=b;d.type=a.toLowerCase();var g=X(b),h=new r(e,g,d,b);h.persist();t(h,c);e.phasedRegistrationNames?Y(h):Z(h);n.unstable_batchedUpdates(function(){aa(b);ba(h)});ca()}}function da(a,
+b){return function(c,e){var d=new K(a);t(d,e);f.isDOMComponent(c)?(c=ea(c),d.target=c,M(b,1,document,d)):c.tagName&&(d.target=c,M(b,1,document,d))}}var t=k.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.assign,h=k.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;h.hasOwnProperty("ReactCurrentDispatcher")||(h.ReactCurrentDispatcher={current:null});h.hasOwnProperty("ReactCurrentBatchConfig")||(h.ReactCurrentBatchConfig={suspense:null});t(r.prototype,{preventDefault:function(){this.defaultPrevented=
+!0;var a=this.nativeEvent;a&&(a.preventDefault?a.preventDefault():"unknown"!==typeof a.returnValue&&(a.returnValue=!1),this.isDefaultPrevented=u)},stopPropagation:function(){var a=this.nativeEvent;a&&(a.stopPropagation?a.stopPropagation():"unknown"!==typeof a.cancelBubble&&(a.cancelBubble=!0),this.isPropagationStopped=u)},persist:function(){this.isPersistent=u},isPersistent:v,destructor:function(){var a=this.constructor.Interface,b;for(b in a)this[b]=null;this.nativeEvent=this._targetInst=this.dispatchConfig=
+null;this.isPropagationStopped=this.isDefaultPrevented=v;this._dispatchInstances=this._dispatchListeners=null}});r.Interface={type:null,target:null,currentTarget:function(){return null},eventPhase:null,bubbles:null,cancelable:null,timeStamp:function(a){return a.timeStamp||Date.now()},defaultPrevented:null,isTrusted:null};r.extend=function(a){function b(){return c.apply(this,arguments)}var c=this,e=function(){};e.prototype=c.prototype;e=new e;t(e,b.prototype);b.prototype=e;b.prototype.constructor=
+b;b.Interface=t({},c.Interface,a);b.extend=c.extend;H(b);return b};H(r);var C=!("undefined"===typeof window||"undefined"===typeof window.document||"undefined"===typeof window.document.createElement),q={animationend:w("Animation","AnimationEnd"),animationiteration:w("Animation","AnimationIteration"),animationstart:w("Animation","AnimationStart"),transitionend:w("Transition","TransitionEnd")},A={},I={};C&&(I=document.createElement("div").style,"AnimationEvent"in window||(delete q.animationend.animation,
+delete q.animationiteration.animation,delete q.animationstart.animation),"TransitionEvent"in window||delete q.transitionend.transition);C=x("animationend");var fa=x("animationiteration"),ha=x("animationstart"),ia=x("transitionend"),y=null,N=k.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_flushAllWithoutAsserting,O=n.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Events,ja=O[11],D=O[12],ka=n.unstable_batchedUpdates,E=h.IsSomeRendererActing,P="function"===typeof N,B=N||function(){for(var a=
+!1;ja();)a=!0;return a},z=0,Q=!1,ea=n.findDOMNode;h=n.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Events;var X=h[0],L=h[4],Y=h[5],Z=h[6],aa=h[7],ca=h[8],M=h[9],ba=h[10],f={renderIntoDocument:function(a){var b=document.createElement("div");return n.render(a,b)},isElement:function(a){return k.isValidElement(a)},isElementOfType:function(a,b){return k.isValidElement(a)&&a.type===b},isDOMComponent:function(a){return!(!a||1!==a.nodeType||!a.tagName)},isDOMComponentElement:function(a){return!!(a&&
+k.isValidElement(a)&&a.tagName)},isCompositeComponent:function(a){return f.isDOMComponent(a)?!1:null!=a&&"function"===typeof a.render&&"function"===typeof a.setState},isCompositeComponentWithType:function(a,b){return f.isCompositeComponent(a)?a._reactInternalFiber.type===b:!1},findAllInRenderedTree:function(a,b){p(a,"findAllInRenderedTree");return a?V(a._reactInternalFiber,b):[]},scryRenderedDOMComponentsWithClass:function(a,b){p(a,"scryRenderedDOMComponentsWithClass");return f.findAllInRenderedTree(a,
+function(a){if(f.isDOMComponent(a)){var c=a.className;"string"!==typeof c&&(c=a.getAttribute("class")||"");var d=c.split(/\s+/);if(!Array.isArray(b)){if(void 0===b)throw Error(l(11));b=b.split(/\s+/)}return b.every(function(a){return-1!==d.indexOf(a)})}return!1})},findRenderedDOMComponentWithClass:function(a,b){p(a,"findRenderedDOMComponentWithClass");a=f.scryRenderedDOMComponentsWithClass(a,b);if(1!==a.length)throw Error("Did not find exactly one match (found: "+a.length+") for class:"+b);return a[0]},
+scryRenderedDOMComponentsWithTag:function(a,b){p(a,"scryRenderedDOMComponentsWithTag");return f.findAllInRenderedTree(a,function(a){return f.isDOMComponent(a)&&a.tagName.toUpperCase()===b.toUpperCase()})},findRenderedDOMComponentWithTag:function(a,b){p(a,"findRenderedDOMComponentWithTag");a=f.scryRenderedDOMComponentsWithTag(a,b);if(1!==a.length)throw Error("Did not find exactly one match (found: "+a.length+") for tag:"+b);return a[0]},scryRenderedComponentsWithType:function(a,b){p(a,"scryRenderedComponentsWithType");
+return f.findAllInRenderedTree(a,function(a){return f.isCompositeComponentWithType(a,b)})},findRenderedComponentWithType:function(a,b){p(a,"findRenderedComponentWithType");a=f.scryRenderedComponentsWithType(a,b);if(1!==a.length)throw Error("Did not find exactly one match (found: "+a.length+") for componentType:"+b);return a[0]},mockComponent:function(a,b){b=b||a.mockTagName||"div";a.prototype.render.mockImplementation(function(){return k.createElement(b,null,this.props.children)});return this},nativeTouchData:function(a,
+b){return{touches:[{pageX:a,pageY:b}]}},Simulate:null,SimulateNative:{},act:function(a){function b(){z--;E.current=c;D.current=e}!1===Q&&(Q=!0,console.error("act(...) is not supported in production builds of React, and might not behave as expected."));z++;var c=E.current;var e=D.current;E.current=!0;D.current=!0;try{var d=ka(a)}catch(g){throw b(),g;}if(null!==d&&"object"===typeof d&&"function"===typeof d.then)return{then:function(a,e){d.then(function(){1<z||!0===P&&!0===c?(b(),a()):J(function(c){b();
+c?e(c):a()})},function(a){b();e(a)})}};try{1!==z||!1!==P&&!1!==c||B(),b()}catch(g){throw b(),g;}return{then:function(a){a()}}}};(function(){f.Simulate={};for(var a in L)f.Simulate[a]=W(a)})();[["abort","abort"],[C,"animationEnd"],[fa,"animationIteration"],[ha,"animationStart"],["blur","blur"],["canplaythrough","canPlayThrough"],["canplay","canPlay"],["cancel","cancel"],["change","change"],["click","click"],["close","close"],["compositionend","compositionEnd"],["compositionstart","compositionStart"],
+["compositionupdate","compositionUpdate"],["contextmenu","contextMenu"],["copy","copy"],["cut","cut"],["dblclick","doubleClick"],["dragend","dragEnd"],["dragenter","dragEnter"],["dragexit","dragExit"],["dragleave","dragLeave"],["dragover","dragOver"],["dragstart","dragStart"],["drag","drag"],["drop","drop"],["durationchange","durationChange"],["emptied","emptied"],["encrypted","encrypted"],["ended","ended"],["error","error"],["focus","focus"],["input","input"],["keydown","keyDown"],["keypress","keyPress"],
+["keyup","keyUp"],["loadstart","loadStart"],["loadstart","loadStart"],["load","load"],["loadeddata","loadedData"],["loadedmetadata","loadedMetadata"],["mousedown","mouseDown"],["mousemove","mouseMove"],["mouseout","mouseOut"],["mouseover","mouseOver"],["mouseup","mouseUp"],["paste","paste"],["pause","pause"],["play","play"],["playing","playing"],["progress","progress"],["ratechange","rateChange"],["scroll","scroll"],["seeked","seeked"],["seeking","seeking"],["selectionchange","selectionChange"],["stalled",
+"stalled"],["suspend","suspend"],["textInput","textInput"],["timeupdate","timeUpdate"],["toggle","toggle"],["touchcancel","touchCancel"],["touchend","touchEnd"],["touchmove","touchMove"],["touchstart","touchStart"],[ia,"transitionEnd"],["volumechange","volumeChange"],["waiting","waiting"],["wheel","wheel"]].forEach(function(a){var b=a[1];f.SimulateNative[b]=da(b,a[0])});return f.default||f});
diff --git a/igv_component/node_modules/react-dom/umd/react-dom-unstable-fizz.browser.development.js b/igv_component/node_modules/react-dom/umd/react-dom-unstable-fizz.browser.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..b204cc7c8ad7db8eff3eba810259ff14218d2567
--- /dev/null
+++ b/igv_component/node_modules/react-dom/umd/react-dom-unstable-fizz.browser.development.js
@@ -0,0 +1,141 @@
+/** @license React v16.13.1
+ * react-dom-unstable-fizz.browser.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global = global || self, global.ReactDOMFizzServer = factory());
+}(this, (function () { 'use strict';
+
+  function scheduleWork(callback) {
+    callback();
+  }
+  function flushBuffered(destination) {// WHATWG Streams do not yet have a way to flush the underlying
+    // transform streams. https://github.com/whatwg/streams/issues/960
+  }
+  function writeChunk(destination, buffer) {
+    destination.enqueue(buffer);
+    return destination.desiredSize > 0;
+  }
+  function close(destination) {
+    destination.close();
+  }
+  var textEncoder = new TextEncoder();
+  function convertStringToBuffer(content) {
+    return textEncoder.encode(content);
+  }
+
+  function formatChunkAsString(type, props) {
+    var str = '<' + type + '>';
+
+    if (typeof props.children === 'string') {
+      str += props.children;
+    }
+
+    str += '</' + type + '>';
+    return str;
+  }
+  function formatChunk(type, props) {
+    return convertStringToBuffer(formatChunkAsString(type, props));
+  }
+
+  // The Symbol used to tag the ReactElement-like types. If there is no native Symbol
+  // nor polyfill, then a plain number is used for performance.
+  var hasSymbol = typeof Symbol === 'function' && Symbol.for;
+  var REACT_ELEMENT_TYPE = hasSymbol ? Symbol.for('react.element') : 0xeac7;
+
+  function createRequest(children, destination) {
+    return {
+      destination: destination,
+      children: children,
+      completedChunks: [],
+      flowing: false
+    };
+  }
+
+  function performWork(request) {
+    var element = request.children;
+    request.children = null;
+
+    if (element && element.$$typeof !== REACT_ELEMENT_TYPE) {
+      return;
+    }
+
+    var type = element.type;
+    var props = element.props;
+
+    if (typeof type !== 'string') {
+      return;
+    }
+
+    request.completedChunks.push(formatChunk(type, props));
+
+    if (request.flowing) {
+      flushCompletedChunks(request);
+    }
+
+    flushBuffered(request.destination);
+  }
+
+  function flushCompletedChunks(request) {
+    var destination = request.destination;
+    var chunks = request.completedChunks;
+    request.completedChunks = [];
+
+    try {
+      for (var i = 0; i < chunks.length; i++) {
+        var chunk = chunks[i];
+        writeChunk(destination, chunk);
+      }
+    } finally {
+    }
+
+    close(destination);
+  }
+
+  function startWork(request) {
+    request.flowing = true;
+    scheduleWork(function () {
+      return performWork(request);
+    });
+  }
+  function startFlowing(request) {
+    request.flowing = false;
+    flushCompletedChunks(request);
+  }
+
+  function renderToReadableStream(children) {
+    var request;
+    return new ReadableStream({
+      start: function (controller) {
+        request = createRequest(children, controller);
+        startWork(request);
+      },
+      pull: function (controller) {
+        startFlowing(request);
+      },
+      cancel: function (reason) {}
+    });
+  }
+
+  var ReactDOMFizzServerBrowser = {
+    renderToReadableStream: renderToReadableStream
+  };
+
+  // TODO: decide on the top-level export form.
+  // This is hacky but makes it work with both Rollup and Jest
+
+
+  var unstableFizz_browser = ReactDOMFizzServerBrowser.default || ReactDOMFizzServerBrowser;
+
+  return unstableFizz_browser;
+
+})));
diff --git a/igv_component/node_modules/react-dom/umd/react-dom-unstable-fizz.browser.production.min.js b/igv_component/node_modules/react-dom/umd/react-dom-unstable-fizz.browser.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..8f687a81cda8917e3ff32af8b839f11e54235e07
--- /dev/null
+++ b/igv_component/node_modules/react-dom/umd/react-dom-unstable-fizz.browser.production.min.js
@@ -0,0 +1,10 @@
+/** @license React v16.13.1
+ * react-dom-unstable-fizz.browser.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';(function(f,d){"object"===typeof exports&&"undefined"!==typeof module?module.exports=d():"function"===typeof define&&define.amd?define(d):(f=f||self,f.ReactDOMFizzServer=d())})(this,function(){function f(b,c){var a="<"+b+">";"string"===typeof c.children&&(a+=c.children);return a+("</"+b+">")}function d(b){var c=b.destination,a=b.completedChunks;b.completedChunks=[];for(b=0;b<a.length;b++)c.enqueue(a[b]);c.close()}var h=new TextEncoder,k="function"===typeof Symbol&&Symbol.for?Symbol.for("react.element"):
+60103,g={renderToReadableStream:function(b){var c;return new ReadableStream({start:function(a){a=c={destination:a,children:b,completedChunks:[],flowing:!1};a.flowing=!0;var e=a.children;a.children=null;if(!e||e.$$typeof===k){var g=e.type;e=e.props;"string"===typeof g&&(a.completedChunks.push(h.encode(f(g,e))),a.flowing&&d(a))}},pull:function(a){a=c;a.flowing=!1;d(a)},cancel:function(a){}})}};return g.default||g});
diff --git a/igv_component/node_modules/react-dom/umd/react-dom-unstable-native-dependencies.development.js b/igv_component/node_modules/react-dom/umd/react-dom-unstable-native-dependencies.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..06ecd18aecdadb3334b56425a7490f9f00b2b9f6
--- /dev/null
+++ b/igv_component/node_modules/react-dom/umd/react-dom-unstable-native-dependencies.development.js
@@ -0,0 +1,1628 @@
+/** @license React v16.13.1
+ * react-dom-unstable-native-dependencies.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory(require('react-dom'), require('react')) :
+  typeof define === 'function' && define.amd ? define(['react-dom', 'react'], factory) :
+  (global = global || self, global.ReactDOMUnstableNativeDependencies = factory(global.ReactDOM, global.React));
+}(this, (function (ReactDOM, React) { 'use strict';
+
+  var ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED; // Prevent newer renderers from RTE when used with older react package versions.
+  // Current owner and dispatcher used to share the same ref,
+  // but PR #14548 split them out to better support the react-debug-tools package.
+
+  if (!ReactSharedInternals.hasOwnProperty('ReactCurrentDispatcher')) {
+    ReactSharedInternals.ReactCurrentDispatcher = {
+      current: null
+    };
+  }
+
+  if (!ReactSharedInternals.hasOwnProperty('ReactCurrentBatchConfig')) {
+    ReactSharedInternals.ReactCurrentBatchConfig = {
+      suspense: null
+    };
+  }
+
+  // by calls to these methods by a Babel plugin.
+  //
+  // In PROD (or in packages without access to React internals),
+  // they are left as they are instead.
+
+  function warn(format) {
+    {
+      for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+        args[_key - 1] = arguments[_key];
+      }
+
+      printWarning('warn', format, args);
+    }
+  }
+  function error(format) {
+    {
+      for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+        args[_key2 - 1] = arguments[_key2];
+      }
+
+      printWarning('error', format, args);
+    }
+  }
+
+  function printWarning(level, format, args) {
+    // When changing this logic, you might want to also
+    // update consoleWithStackDev.www.js as well.
+    {
+      var hasExistingStack = args.length > 0 && typeof args[args.length - 1] === 'string' && args[args.length - 1].indexOf('\n    in') === 0;
+
+      if (!hasExistingStack) {
+        var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+        var stack = ReactDebugCurrentFrame.getStackAddendum();
+
+        if (stack !== '') {
+          format += '%s';
+          args = args.concat([stack]);
+        }
+      }
+
+      var argsWithFormat = args.map(function (item) {
+        return '' + item;
+      }); // Careful: RN currently depends on this prefix
+
+      argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it
+      // breaks IE9: https://github.com/facebook/react/issues/13610
+      // eslint-disable-next-line react-internal/no-production-logging
+
+      Function.prototype.apply.call(console[level], console, argsWithFormat);
+
+      try {
+        // --- Welcome to debugging React ---
+        // This error was thrown as a convenience so that you can use this stack
+        // to find the callsite that caused this warning to fire.
+        var argIndex = 0;
+        var message = 'Warning: ' + format.replace(/%s/g, function () {
+          return args[argIndex++];
+        });
+        throw new Error(message);
+      } catch (x) {}
+    }
+  }
+
+  {
+    // In DEV mode, we swap out invokeGuardedCallback for a special version
+    // that plays more nicely with the browser's DevTools. The idea is to preserve
+    // "Pause on exceptions" behavior. Because React wraps all user-provided
+    // functions in invokeGuardedCallback, and the production version of
+    // invokeGuardedCallback uses a try-catch, all user exceptions are treated
+    // like caught exceptions, and the DevTools won't pause unless the developer
+    // takes the extra step of enabling pause on caught exceptions. This is
+    // unintuitive, though, because even though React has caught the error, from
+    // the developer's perspective, the error is uncaught.
+    //
+    // To preserve the expected "Pause on exceptions" behavior, we don't use a
+    // try-catch in DEV. Instead, we synchronously dispatch a fake event to a fake
+    // DOM node, and call the user-provided callback from inside an event handler
+    // for that fake event. If the callback throws, the error is "captured" using
+    // a global event handler. But because the error happens in a different
+    // event loop context, it does not interrupt the normal program flow.
+    // Effectively, this gives us try-catch behavior without actually using
+    // try-catch. Neat!
+    // Check that the browser supports the APIs we need to implement our special
+    // DEV version of invokeGuardedCallback
+    if (typeof window !== 'undefined' && typeof window.dispatchEvent === 'function' && typeof document !== 'undefined' && typeof document.createEvent === 'function') {
+      var fakeNode = document.createElement('react');
+    }
+  }
+
+  var getFiberCurrentPropsFromNode = null;
+  var getInstanceFromNode = null;
+  var getNodeFromInstance = null;
+  function setComponentTree(getFiberCurrentPropsFromNodeImpl, getInstanceFromNodeImpl, getNodeFromInstanceImpl) {
+    getFiberCurrentPropsFromNode = getFiberCurrentPropsFromNodeImpl;
+    getInstanceFromNode = getInstanceFromNodeImpl;
+    getNodeFromInstance = getNodeFromInstanceImpl;
+
+    {
+      if (!getNodeFromInstance || !getInstanceFromNode) {
+        error('EventPluginUtils.setComponentTree(...): Injected ' + 'module is missing getNodeFromInstance or getInstanceFromNode.');
+      }
+    }
+  }
+  var validateEventDispatches;
+
+  {
+    validateEventDispatches = function (event) {
+      var dispatchListeners = event._dispatchListeners;
+      var dispatchInstances = event._dispatchInstances;
+      var listenersIsArr = Array.isArray(dispatchListeners);
+      var listenersLen = listenersIsArr ? dispatchListeners.length : dispatchListeners ? 1 : 0;
+      var instancesIsArr = Array.isArray(dispatchInstances);
+      var instancesLen = instancesIsArr ? dispatchInstances.length : dispatchInstances ? 1 : 0;
+
+      if (instancesIsArr !== listenersIsArr || instancesLen !== listenersLen) {
+        error('EventPluginUtils: Invalid `event`.');
+      }
+    };
+  }
+  /**
+   * Standard/simple iteration through an event's collected dispatches, but stops
+   * at the first dispatch execution returning true, and returns that id.
+   *
+   * @return {?string} id of the first dispatch execution who's listener returns
+   * true, or null if no listener returned true.
+   */
+
+  function executeDispatchesInOrderStopAtTrueImpl(event) {
+    var dispatchListeners = event._dispatchListeners;
+    var dispatchInstances = event._dispatchInstances;
+
+    {
+      validateEventDispatches(event);
+    }
+
+    if (Array.isArray(dispatchListeners)) {
+      for (var i = 0; i < dispatchListeners.length; i++) {
+        if (event.isPropagationStopped()) {
+          break;
+        } // Listeners and Instances are two parallel arrays that are always in sync.
+
+
+        if (dispatchListeners[i](event, dispatchInstances[i])) {
+          return dispatchInstances[i];
+        }
+      }
+    } else if (dispatchListeners) {
+      if (dispatchListeners(event, dispatchInstances)) {
+        return dispatchInstances;
+      }
+    }
+
+    return null;
+  }
+  /**
+   * @see executeDispatchesInOrderStopAtTrueImpl
+   */
+
+
+  function executeDispatchesInOrderStopAtTrue(event) {
+    var ret = executeDispatchesInOrderStopAtTrueImpl(event);
+    event._dispatchInstances = null;
+    event._dispatchListeners = null;
+    return ret;
+  }
+  /**
+   * Execution of a "direct" dispatch - there must be at most one dispatch
+   * accumulated on the event or it is considered an error. It doesn't really make
+   * sense for an event with multiple dispatches (bubbled) to keep track of the
+   * return values at each dispatch execution, but it does tend to make sense when
+   * dealing with "direct" dispatches.
+   *
+   * @return {*} The return value of executing the single dispatch.
+   */
+
+  function executeDirectDispatch(event) {
+    {
+      validateEventDispatches(event);
+    }
+
+    var dispatchListener = event._dispatchListeners;
+    var dispatchInstance = event._dispatchInstances;
+
+    if (!!Array.isArray(dispatchListener)) {
+      {
+        throw Error( "executeDirectDispatch(...): Invalid `event`." );
+      }
+    }
+
+    event.currentTarget = dispatchListener ? getNodeFromInstance(dispatchInstance) : null;
+    var res = dispatchListener ? dispatchListener(event) : null;
+    event.currentTarget = null;
+    event._dispatchListeners = null;
+    event._dispatchInstances = null;
+    return res;
+  }
+  /**
+   * @param {SyntheticEvent} event
+   * @return {boolean} True iff number of dispatches accumulated is greater than 0.
+   */
+
+  function hasDispatches(event) {
+    return !!event._dispatchListeners;
+  }
+
+  var HostComponent = 5;
+
+  function getParent(inst) {
+    do {
+      inst = inst.return; // TODO: If this is a HostRoot we might want to bail out.
+      // That is depending on if we want nested subtrees (layers) to bubble
+      // events to their parent. We could also go through parentNode on the
+      // host node but that wouldn't work for React Native and doesn't let us
+      // do the portal feature.
+    } while (inst && inst.tag !== HostComponent);
+
+    if (inst) {
+      return inst;
+    }
+
+    return null;
+  }
+  /**
+   * Return the lowest common ancestor of A and B, or null if they are in
+   * different trees.
+   */
+
+
+  function getLowestCommonAncestor(instA, instB) {
+    var depthA = 0;
+
+    for (var tempA = instA; tempA; tempA = getParent(tempA)) {
+      depthA++;
+    }
+
+    var depthB = 0;
+
+    for (var tempB = instB; tempB; tempB = getParent(tempB)) {
+      depthB++;
+    } // If A is deeper, crawl up.
+
+
+    while (depthA - depthB > 0) {
+      instA = getParent(instA);
+      depthA--;
+    } // If B is deeper, crawl up.
+
+
+    while (depthB - depthA > 0) {
+      instB = getParent(instB);
+      depthB--;
+    } // Walk in lockstep until we find a match.
+
+
+    var depth = depthA;
+
+    while (depth--) {
+      if (instA === instB || instA === instB.alternate) {
+        return instA;
+      }
+
+      instA = getParent(instA);
+      instB = getParent(instB);
+    }
+
+    return null;
+  }
+  /**
+   * Return if A is an ancestor of B.
+   */
+
+  function isAncestor(instA, instB) {
+    while (instB) {
+      if (instA === instB || instA === instB.alternate) {
+        return true;
+      }
+
+      instB = getParent(instB);
+    }
+
+    return false;
+  }
+  /**
+   * Return the parent instance of the passed-in instance.
+   */
+
+  function getParentInstance(inst) {
+    return getParent(inst);
+  }
+  /**
+   * Simulates the traversal of a two-phase, capture/bubble event dispatch.
+   */
+
+  function traverseTwoPhase(inst, fn, arg) {
+    var path = [];
+
+    while (inst) {
+      path.push(inst);
+      inst = getParent(inst);
+    }
+
+    var i;
+
+    for (i = path.length; i-- > 0;) {
+      fn(path[i], 'captured', arg);
+    }
+
+    for (i = 0; i < path.length; i++) {
+      fn(path[i], 'bubbled', arg);
+    }
+  }
+
+  function isInteractive(tag) {
+    return tag === 'button' || tag === 'input' || tag === 'select' || tag === 'textarea';
+  }
+
+  function shouldPreventMouseEvent(name, type, props) {
+    switch (name) {
+      case 'onClick':
+      case 'onClickCapture':
+      case 'onDoubleClick':
+      case 'onDoubleClickCapture':
+      case 'onMouseDown':
+      case 'onMouseDownCapture':
+      case 'onMouseMove':
+      case 'onMouseMoveCapture':
+      case 'onMouseUp':
+      case 'onMouseUpCapture':
+      case 'onMouseEnter':
+        return !!(props.disabled && isInteractive(type));
+
+      default:
+        return false;
+    }
+  }
+  /**
+   * @param {object} inst The instance, which is the source of events.
+   * @param {string} registrationName Name of listener (e.g. `onClick`).
+   * @return {?function} The stored callback.
+   */
+
+
+  function getListener(inst, registrationName) {
+    var listener; // TODO: shouldPreventMouseEvent is DOM-specific and definitely should not
+    // live here; needs to be moved to a better place soon
+
+    var stateNode = inst.stateNode;
+
+    if (!stateNode) {
+      // Work in progress (ex: onload events in incremental mode).
+      return null;
+    }
+
+    var props = getFiberCurrentPropsFromNode(stateNode);
+
+    if (!props) {
+      // Work in progress.
+      return null;
+    }
+
+    listener = props[registrationName];
+
+    if (shouldPreventMouseEvent(registrationName, inst.type, props)) {
+      return null;
+    }
+
+    if (!(!listener || typeof listener === 'function')) {
+      {
+        throw Error( "Expected `" + registrationName + "` listener to be a function, instead got a value of `" + typeof listener + "` type." );
+      }
+    }
+
+    return listener;
+  }
+
+  /**
+   * Accumulates items that must not be null or undefined into the first one. This
+   * is used to conserve memory by avoiding array allocations, and thus sacrifices
+   * API cleanness. Since `current` can be null before being passed in and not
+   * null after this function, make sure to assign it back to `current`:
+   *
+   * `a = accumulateInto(a, b);`
+   *
+   * This API should be sparingly used. Try `accumulate` for something cleaner.
+   *
+   * @return {*|array<*>} An accumulation of items.
+   */
+
+  function accumulateInto(current, next) {
+    if (!(next != null)) {
+      {
+        throw Error( "accumulateInto(...): Accumulated items must not be null or undefined." );
+      }
+    }
+
+    if (current == null) {
+      return next;
+    } // Both are not empty. Warning: Never call x.concat(y) when you are not
+    // certain that x is an Array (x could be a string with concat method).
+
+
+    if (Array.isArray(current)) {
+      if (Array.isArray(next)) {
+        current.push.apply(current, next);
+        return current;
+      }
+
+      current.push(next);
+      return current;
+    }
+
+    if (Array.isArray(next)) {
+      // A bit too dangerous to mutate `next`.
+      return [current].concat(next);
+    }
+
+    return [current, next];
+  }
+
+  /**
+   * @param {array} arr an "accumulation" of items which is either an Array or
+   * a single item. Useful when paired with the `accumulate` module. This is a
+   * simple utility that allows us to reason about a collection of items, but
+   * handling the case when there is exactly one item (and we do not need to
+   * allocate an array).
+   * @param {function} cb Callback invoked with each element or a collection.
+   * @param {?} [scope] Scope used as `this` in a callback.
+   */
+  function forEachAccumulated(arr, cb, scope) {
+    if (Array.isArray(arr)) {
+      arr.forEach(cb, scope);
+    } else if (arr) {
+      cb.call(scope, arr);
+    }
+  }
+
+  /**
+   * Some event types have a notion of different registration names for different
+   * "phases" of propagation. This finds listeners by a given phase.
+   */
+  function listenerAtPhase(inst, event, propagationPhase) {
+    var registrationName = event.dispatchConfig.phasedRegistrationNames[propagationPhase];
+    return getListener(inst, registrationName);
+  }
+  /**
+   * A small set of propagation patterns, each of which will accept a small amount
+   * of information, and generate a set of "dispatch ready event objects" - which
+   * are sets of events that have already been annotated with a set of dispatched
+   * listener functions/ids. The API is designed this way to discourage these
+   * propagation strategies from actually executing the dispatches, since we
+   * always want to collect the entire set of dispatches before executing even a
+   * single one.
+   */
+
+  /**
+   * Tags a `SyntheticEvent` with dispatched listeners. Creating this function
+   * here, allows us to not have to bind or create functions for each event.
+   * Mutating the event's members allows us to not have to create a wrapping
+   * "dispatch" object that pairs the event with the listener.
+   */
+
+
+  function accumulateDirectionalDispatches(inst, phase, event) {
+    {
+      if (!inst) {
+        error('Dispatching inst must not be null');
+      }
+    }
+
+    var listener = listenerAtPhase(inst, event, phase);
+
+    if (listener) {
+      event._dispatchListeners = accumulateInto(event._dispatchListeners, listener);
+      event._dispatchInstances = accumulateInto(event._dispatchInstances, inst);
+    }
+  }
+  /**
+   * Collect dispatches (must be entirely collected before dispatching - see unit
+   * tests). Lazily allocate the array to conserve memory.  We must loop through
+   * each event and perform the traversal for each one. We cannot perform a
+   * single traversal for the entire collection of events because each event may
+   * have a different target.
+   */
+
+
+  function accumulateTwoPhaseDispatchesSingle(event) {
+    if (event && event.dispatchConfig.phasedRegistrationNames) {
+      traverseTwoPhase(event._targetInst, accumulateDirectionalDispatches, event);
+    }
+  }
+  /**
+   * Same as `accumulateTwoPhaseDispatchesSingle`, but skips over the targetID.
+   */
+
+
+  function accumulateTwoPhaseDispatchesSingleSkipTarget(event) {
+    if (event && event.dispatchConfig.phasedRegistrationNames) {
+      var targetInst = event._targetInst;
+      var parentInst = targetInst ? getParentInstance(targetInst) : null;
+      traverseTwoPhase(parentInst, accumulateDirectionalDispatches, event);
+    }
+  }
+  /**
+   * Accumulates without regard to direction, does not look for phased
+   * registration names. Same as `accumulateDirectDispatchesSingle` but without
+   * requiring that the `dispatchMarker` be the same as the dispatched ID.
+   */
+
+
+  function accumulateDispatches(inst, ignoredDirection, event) {
+    if (inst && event && event.dispatchConfig.registrationName) {
+      var registrationName = event.dispatchConfig.registrationName;
+      var listener = getListener(inst, registrationName);
+
+      if (listener) {
+        event._dispatchListeners = accumulateInto(event._dispatchListeners, listener);
+        event._dispatchInstances = accumulateInto(event._dispatchInstances, inst);
+      }
+    }
+  }
+  /**
+   * Accumulates dispatches on an `SyntheticEvent`, but only for the
+   * `dispatchMarker`.
+   * @param {SyntheticEvent} event
+   */
+
+
+  function accumulateDirectDispatchesSingle(event) {
+    if (event && event.dispatchConfig.registrationName) {
+      accumulateDispatches(event._targetInst, null, event);
+    }
+  }
+
+  function accumulateTwoPhaseDispatches(events) {
+    forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle);
+  }
+  function accumulateTwoPhaseDispatchesSkipTarget(events) {
+    forEachAccumulated(events, accumulateTwoPhaseDispatchesSingleSkipTarget);
+  }
+  function accumulateDirectDispatches(events) {
+    forEachAccumulated(events, accumulateDirectDispatchesSingle);
+  }
+
+  var ReactInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;
+  var _assign = ReactInternals.assign;
+
+  var EVENT_POOL_SIZE = 10;
+  /**
+   * @interface Event
+   * @see http://www.w3.org/TR/DOM-Level-3-Events/
+   */
+
+  var EventInterface = {
+    type: null,
+    target: null,
+    // currentTarget is set when dispatching; no use in copying it here
+    currentTarget: function () {
+      return null;
+    },
+    eventPhase: null,
+    bubbles: null,
+    cancelable: null,
+    timeStamp: function (event) {
+      return event.timeStamp || Date.now();
+    },
+    defaultPrevented: null,
+    isTrusted: null
+  };
+
+  function functionThatReturnsTrue() {
+    return true;
+  }
+
+  function functionThatReturnsFalse() {
+    return false;
+  }
+  /**
+   * Synthetic events are dispatched by event plugins, typically in response to a
+   * top-level event delegation handler.
+   *
+   * These systems should generally use pooling to reduce the frequency of garbage
+   * collection. The system should check `isPersistent` to determine whether the
+   * event should be released into the pool after being dispatched. Users that
+   * need a persisted event should invoke `persist`.
+   *
+   * Synthetic events (and subclasses) implement the DOM Level 3 Events API by
+   * normalizing browser quirks. Subclasses do not necessarily have to implement a
+   * DOM interface; custom application-specific events can also subclass this.
+   *
+   * @param {object} dispatchConfig Configuration used to dispatch this event.
+   * @param {*} targetInst Marker identifying the event target.
+   * @param {object} nativeEvent Native browser event.
+   * @param {DOMEventTarget} nativeEventTarget Target node.
+   */
+
+
+  function SyntheticEvent(dispatchConfig, targetInst, nativeEvent, nativeEventTarget) {
+    {
+      // these have a getter/setter for warnings
+      delete this.nativeEvent;
+      delete this.preventDefault;
+      delete this.stopPropagation;
+      delete this.isDefaultPrevented;
+      delete this.isPropagationStopped;
+    }
+
+    this.dispatchConfig = dispatchConfig;
+    this._targetInst = targetInst;
+    this.nativeEvent = nativeEvent;
+    var Interface = this.constructor.Interface;
+
+    for (var propName in Interface) {
+      if (!Interface.hasOwnProperty(propName)) {
+        continue;
+      }
+
+      {
+        delete this[propName]; // this has a getter/setter for warnings
+      }
+
+      var normalize = Interface[propName];
+
+      if (normalize) {
+        this[propName] = normalize(nativeEvent);
+      } else {
+        if (propName === 'target') {
+          this.target = nativeEventTarget;
+        } else {
+          this[propName] = nativeEvent[propName];
+        }
+      }
+    }
+
+    var defaultPrevented = nativeEvent.defaultPrevented != null ? nativeEvent.defaultPrevented : nativeEvent.returnValue === false;
+
+    if (defaultPrevented) {
+      this.isDefaultPrevented = functionThatReturnsTrue;
+    } else {
+      this.isDefaultPrevented = functionThatReturnsFalse;
+    }
+
+    this.isPropagationStopped = functionThatReturnsFalse;
+    return this;
+  }
+
+  _assign(SyntheticEvent.prototype, {
+    preventDefault: function () {
+      this.defaultPrevented = true;
+      var event = this.nativeEvent;
+
+      if (!event) {
+        return;
+      }
+
+      if (event.preventDefault) {
+        event.preventDefault();
+      } else if (typeof event.returnValue !== 'unknown') {
+        event.returnValue = false;
+      }
+
+      this.isDefaultPrevented = functionThatReturnsTrue;
+    },
+    stopPropagation: function () {
+      var event = this.nativeEvent;
+
+      if (!event) {
+        return;
+      }
+
+      if (event.stopPropagation) {
+        event.stopPropagation();
+      } else if (typeof event.cancelBubble !== 'unknown') {
+        // The ChangeEventPlugin registers a "propertychange" event for
+        // IE. This event does not support bubbling or cancelling, and
+        // any references to cancelBubble throw "Member not found".  A
+        // typeof check of "unknown" circumvents this issue (and is also
+        // IE specific).
+        event.cancelBubble = true;
+      }
+
+      this.isPropagationStopped = functionThatReturnsTrue;
+    },
+
+    /**
+     * We release all dispatched `SyntheticEvent`s after each event loop, adding
+     * them back into the pool. This allows a way to hold onto a reference that
+     * won't be added back into the pool.
+     */
+    persist: function () {
+      this.isPersistent = functionThatReturnsTrue;
+    },
+
+    /**
+     * Checks if this event should be released back into the pool.
+     *
+     * @return {boolean} True if this should not be released, false otherwise.
+     */
+    isPersistent: functionThatReturnsFalse,
+
+    /**
+     * `PooledClass` looks for `destructor` on each instance it releases.
+     */
+    destructor: function () {
+      var Interface = this.constructor.Interface;
+
+      for (var propName in Interface) {
+        {
+          Object.defineProperty(this, propName, getPooledWarningPropertyDefinition(propName, Interface[propName]));
+        }
+      }
+
+      this.dispatchConfig = null;
+      this._targetInst = null;
+      this.nativeEvent = null;
+      this.isDefaultPrevented = functionThatReturnsFalse;
+      this.isPropagationStopped = functionThatReturnsFalse;
+      this._dispatchListeners = null;
+      this._dispatchInstances = null;
+
+      {
+        Object.defineProperty(this, 'nativeEvent', getPooledWarningPropertyDefinition('nativeEvent', null));
+        Object.defineProperty(this, 'isDefaultPrevented', getPooledWarningPropertyDefinition('isDefaultPrevented', functionThatReturnsFalse));
+        Object.defineProperty(this, 'isPropagationStopped', getPooledWarningPropertyDefinition('isPropagationStopped', functionThatReturnsFalse));
+        Object.defineProperty(this, 'preventDefault', getPooledWarningPropertyDefinition('preventDefault', function () {}));
+        Object.defineProperty(this, 'stopPropagation', getPooledWarningPropertyDefinition('stopPropagation', function () {}));
+      }
+    }
+  });
+
+  SyntheticEvent.Interface = EventInterface;
+  /**
+   * Helper to reduce boilerplate when creating subclasses.
+   */
+
+  SyntheticEvent.extend = function (Interface) {
+    var Super = this;
+
+    var E = function () {};
+
+    E.prototype = Super.prototype;
+    var prototype = new E();
+
+    function Class() {
+      return Super.apply(this, arguments);
+    }
+
+    _assign(prototype, Class.prototype);
+
+    Class.prototype = prototype;
+    Class.prototype.constructor = Class;
+    Class.Interface = _assign({}, Super.Interface, Interface);
+    Class.extend = Super.extend;
+    addEventPoolingTo(Class);
+    return Class;
+  };
+
+  addEventPoolingTo(SyntheticEvent);
+  /**
+   * Helper to nullify syntheticEvent instance properties when destructing
+   *
+   * @param {String} propName
+   * @param {?object} getVal
+   * @return {object} defineProperty object
+   */
+
+  function getPooledWarningPropertyDefinition(propName, getVal) {
+    var isFunction = typeof getVal === 'function';
+    return {
+      configurable: true,
+      set: set,
+      get: get
+    };
+
+    function set(val) {
+      var action = isFunction ? 'setting the method' : 'setting the property';
+      warn(action, 'This is effectively a no-op');
+      return val;
+    }
+
+    function get() {
+      var action = isFunction ? 'accessing the method' : 'accessing the property';
+      var result = isFunction ? 'This is a no-op function' : 'This is set to null';
+      warn(action, result);
+      return getVal;
+    }
+
+    function warn(action, result) {
+      {
+        error("This synthetic event is reused for performance reasons. If you're seeing this, " + "you're %s `%s` on a released/nullified synthetic event. %s. " + 'If you must keep the original synthetic event around, use event.persist(). ' + 'See https://fb.me/react-event-pooling for more information.', action, propName, result);
+      }
+    }
+  }
+
+  function getPooledEvent(dispatchConfig, targetInst, nativeEvent, nativeInst) {
+    var EventConstructor = this;
+
+    if (EventConstructor.eventPool.length) {
+      var instance = EventConstructor.eventPool.pop();
+      EventConstructor.call(instance, dispatchConfig, targetInst, nativeEvent, nativeInst);
+      return instance;
+    }
+
+    return new EventConstructor(dispatchConfig, targetInst, nativeEvent, nativeInst);
+  }
+
+  function releasePooledEvent(event) {
+    var EventConstructor = this;
+
+    if (!(event instanceof EventConstructor)) {
+      {
+        throw Error( "Trying to release an event instance into a pool of a different type." );
+      }
+    }
+
+    event.destructor();
+
+    if (EventConstructor.eventPool.length < EVENT_POOL_SIZE) {
+      EventConstructor.eventPool.push(event);
+    }
+  }
+
+  function addEventPoolingTo(EventConstructor) {
+    EventConstructor.eventPool = [];
+    EventConstructor.getPooled = getPooledEvent;
+    EventConstructor.release = releasePooledEvent;
+  }
+
+  /**
+   * `touchHistory` isn't actually on the native event, but putting it in the
+   * interface will ensure that it is cleaned up when pooled/destroyed. The
+   * `ResponderEventPlugin` will populate it appropriately.
+   */
+
+  var ResponderSyntheticEvent = SyntheticEvent.extend({
+    touchHistory: function (nativeEvent) {
+      return null; // Actually doesn't even look at the native event.
+    }
+  });
+
+  // Note: ideally these would be imported from DOMTopLevelEventTypes,
+  // but our build system currently doesn't let us do that from a fork.
+  var TOP_TOUCH_START = 'touchstart';
+  var TOP_TOUCH_MOVE = 'touchmove';
+  var TOP_TOUCH_END = 'touchend';
+  var TOP_TOUCH_CANCEL = 'touchcancel';
+  var TOP_SCROLL = 'scroll';
+  var TOP_SELECTION_CHANGE = 'selectionchange';
+  var TOP_MOUSE_DOWN = 'mousedown';
+  var TOP_MOUSE_MOVE = 'mousemove';
+  var TOP_MOUSE_UP = 'mouseup';
+  function isStartish(topLevelType) {
+    return topLevelType === TOP_TOUCH_START || topLevelType === TOP_MOUSE_DOWN;
+  }
+  function isMoveish(topLevelType) {
+    return topLevelType === TOP_TOUCH_MOVE || topLevelType === TOP_MOUSE_MOVE;
+  }
+  function isEndish(topLevelType) {
+    return topLevelType === TOP_TOUCH_END || topLevelType === TOP_TOUCH_CANCEL || topLevelType === TOP_MOUSE_UP;
+  }
+  var startDependencies = [TOP_TOUCH_START, TOP_MOUSE_DOWN];
+  var moveDependencies = [TOP_TOUCH_MOVE, TOP_MOUSE_MOVE];
+  var endDependencies = [TOP_TOUCH_CANCEL, TOP_TOUCH_END, TOP_MOUSE_UP];
+
+  /**
+   * Tracks the position and time of each active touch by `touch.identifier`. We
+   * should typically only see IDs in the range of 1-20 because IDs get recycled
+   * when touches end and start again.
+   */
+
+  var MAX_TOUCH_BANK = 20;
+  var touchBank = [];
+  var touchHistory = {
+    touchBank: touchBank,
+    numberActiveTouches: 0,
+    // If there is only one active touch, we remember its location. This prevents
+    // us having to loop through all of the touches all the time in the most
+    // common case.
+    indexOfSingleActiveTouch: -1,
+    mostRecentTimeStamp: 0
+  };
+
+  function timestampForTouch(touch) {
+    // The legacy internal implementation provides "timeStamp", which has been
+    // renamed to "timestamp". Let both work for now while we iron it out
+    // TODO (evv): rename timeStamp to timestamp in internal code
+    return touch.timeStamp || touch.timestamp;
+  }
+  /**
+   * TODO: Instead of making gestures recompute filtered velocity, we could
+   * include a built in velocity computation that can be reused globally.
+   */
+
+
+  function createTouchRecord(touch) {
+    return {
+      touchActive: true,
+      startPageX: touch.pageX,
+      startPageY: touch.pageY,
+      startTimeStamp: timestampForTouch(touch),
+      currentPageX: touch.pageX,
+      currentPageY: touch.pageY,
+      currentTimeStamp: timestampForTouch(touch),
+      previousPageX: touch.pageX,
+      previousPageY: touch.pageY,
+      previousTimeStamp: timestampForTouch(touch)
+    };
+  }
+
+  function resetTouchRecord(touchRecord, touch) {
+    touchRecord.touchActive = true;
+    touchRecord.startPageX = touch.pageX;
+    touchRecord.startPageY = touch.pageY;
+    touchRecord.startTimeStamp = timestampForTouch(touch);
+    touchRecord.currentPageX = touch.pageX;
+    touchRecord.currentPageY = touch.pageY;
+    touchRecord.currentTimeStamp = timestampForTouch(touch);
+    touchRecord.previousPageX = touch.pageX;
+    touchRecord.previousPageY = touch.pageY;
+    touchRecord.previousTimeStamp = timestampForTouch(touch);
+  }
+
+  function getTouchIdentifier(_ref) {
+    var identifier = _ref.identifier;
+
+    if (!(identifier != null)) {
+      {
+        throw Error( "Touch object is missing identifier." );
+      }
+    }
+
+    {
+      if (identifier > MAX_TOUCH_BANK) {
+        error('Touch identifier %s is greater than maximum supported %s which causes ' + 'performance issues backfilling array locations for all of the indices.', identifier, MAX_TOUCH_BANK);
+      }
+    }
+
+    return identifier;
+  }
+
+  function recordTouchStart(touch) {
+    var identifier = getTouchIdentifier(touch);
+    var touchRecord = touchBank[identifier];
+
+    if (touchRecord) {
+      resetTouchRecord(touchRecord, touch);
+    } else {
+      touchBank[identifier] = createTouchRecord(touch);
+    }
+
+    touchHistory.mostRecentTimeStamp = timestampForTouch(touch);
+  }
+
+  function recordTouchMove(touch) {
+    var touchRecord = touchBank[getTouchIdentifier(touch)];
+
+    if (touchRecord) {
+      touchRecord.touchActive = true;
+      touchRecord.previousPageX = touchRecord.currentPageX;
+      touchRecord.previousPageY = touchRecord.currentPageY;
+      touchRecord.previousTimeStamp = touchRecord.currentTimeStamp;
+      touchRecord.currentPageX = touch.pageX;
+      touchRecord.currentPageY = touch.pageY;
+      touchRecord.currentTimeStamp = timestampForTouch(touch);
+      touchHistory.mostRecentTimeStamp = timestampForTouch(touch);
+    } else {
+      {
+        warn('Cannot record touch move without a touch start.\n' + 'Touch Move: %s\n' + 'Touch Bank: %s', printTouch(touch), printTouchBank());
+      }
+    }
+  }
+
+  function recordTouchEnd(touch) {
+    var touchRecord = touchBank[getTouchIdentifier(touch)];
+
+    if (touchRecord) {
+      touchRecord.touchActive = false;
+      touchRecord.previousPageX = touchRecord.currentPageX;
+      touchRecord.previousPageY = touchRecord.currentPageY;
+      touchRecord.previousTimeStamp = touchRecord.currentTimeStamp;
+      touchRecord.currentPageX = touch.pageX;
+      touchRecord.currentPageY = touch.pageY;
+      touchRecord.currentTimeStamp = timestampForTouch(touch);
+      touchHistory.mostRecentTimeStamp = timestampForTouch(touch);
+    } else {
+      {
+        warn('Cannot record touch end without a touch start.\n' + 'Touch End: %s\n' + 'Touch Bank: %s', printTouch(touch), printTouchBank());
+      }
+    }
+  }
+
+  function printTouch(touch) {
+    return JSON.stringify({
+      identifier: touch.identifier,
+      pageX: touch.pageX,
+      pageY: touch.pageY,
+      timestamp: timestampForTouch(touch)
+    });
+  }
+
+  function printTouchBank() {
+    var printed = JSON.stringify(touchBank.slice(0, MAX_TOUCH_BANK));
+
+    if (touchBank.length > MAX_TOUCH_BANK) {
+      printed += ' (original size: ' + touchBank.length + ')';
+    }
+
+    return printed;
+  }
+
+  var ResponderTouchHistoryStore = {
+    recordTouchTrack: function (topLevelType, nativeEvent) {
+      if (isMoveish(topLevelType)) {
+        nativeEvent.changedTouches.forEach(recordTouchMove);
+      } else if (isStartish(topLevelType)) {
+        nativeEvent.changedTouches.forEach(recordTouchStart);
+        touchHistory.numberActiveTouches = nativeEvent.touches.length;
+
+        if (touchHistory.numberActiveTouches === 1) {
+          touchHistory.indexOfSingleActiveTouch = nativeEvent.touches[0].identifier;
+        }
+      } else if (isEndish(topLevelType)) {
+        nativeEvent.changedTouches.forEach(recordTouchEnd);
+        touchHistory.numberActiveTouches = nativeEvent.touches.length;
+
+        if (touchHistory.numberActiveTouches === 1) {
+          for (var i = 0; i < touchBank.length; i++) {
+            var touchTrackToCheck = touchBank[i];
+
+            if (touchTrackToCheck != null && touchTrackToCheck.touchActive) {
+              touchHistory.indexOfSingleActiveTouch = i;
+              break;
+            }
+          }
+
+          {
+            var activeRecord = touchBank[touchHistory.indexOfSingleActiveTouch];
+
+            if (activeRecord == null || !activeRecord.touchActive) {
+              error('Cannot find single active touch.');
+            }
+          }
+        }
+      }
+    },
+    touchHistory: touchHistory
+  };
+
+  /**
+   * Accumulates items that must not be null or undefined.
+   *
+   * This is used to conserve memory by avoiding array allocations.
+   *
+   * @return {*|array<*>} An accumulation of items.
+   */
+
+  function accumulate(current, next) {
+    if (!(next != null)) {
+      {
+        throw Error( "accumulate(...): Accumulated items must not be null or undefined." );
+      }
+    }
+
+    if (current == null) {
+      return next;
+    } // Both are not empty. Warning: Never call x.concat(y) when you are not
+    // certain that x is an Array (x could be a string with concat method).
+
+
+    if (Array.isArray(current)) {
+      return current.concat(next);
+    }
+
+    if (Array.isArray(next)) {
+      return [current].concat(next);
+    }
+
+    return [current, next];
+  }
+
+  /**
+   * Instance of element that should respond to touch/move types of interactions,
+   * as indicated explicitly by relevant callbacks.
+   */
+
+  var responderInst = null;
+  /**
+   * Count of current touches. A textInput should become responder iff the
+   * selection changes while there is a touch on the screen.
+   */
+
+  var trackedTouchCount = 0;
+
+  var changeResponder = function (nextResponderInst, blockHostResponder) {
+    var oldResponderInst = responderInst;
+    responderInst = nextResponderInst;
+
+    if (ResponderEventPlugin.GlobalResponderHandler !== null) {
+      ResponderEventPlugin.GlobalResponderHandler.onChange(oldResponderInst, nextResponderInst, blockHostResponder);
+    }
+  };
+
+  var eventTypes = {
+    /**
+     * On a `touchStart`/`mouseDown`, is it desired that this element become the
+     * responder?
+     */
+    startShouldSetResponder: {
+      phasedRegistrationNames: {
+        bubbled: 'onStartShouldSetResponder',
+        captured: 'onStartShouldSetResponderCapture'
+      },
+      dependencies: startDependencies
+    },
+
+    /**
+     * On a `scroll`, is it desired that this element become the responder? This
+     * is usually not needed, but should be used to retroactively infer that a
+     * `touchStart` had occurred during momentum scroll. During a momentum scroll,
+     * a touch start will be immediately followed by a scroll event if the view is
+     * currently scrolling.
+     *
+     * TODO: This shouldn't bubble.
+     */
+    scrollShouldSetResponder: {
+      phasedRegistrationNames: {
+        bubbled: 'onScrollShouldSetResponder',
+        captured: 'onScrollShouldSetResponderCapture'
+      },
+      dependencies: [TOP_SCROLL]
+    },
+
+    /**
+     * On text selection change, should this element become the responder? This
+     * is needed for text inputs or other views with native selection, so the
+     * JS view can claim the responder.
+     *
+     * TODO: This shouldn't bubble.
+     */
+    selectionChangeShouldSetResponder: {
+      phasedRegistrationNames: {
+        bubbled: 'onSelectionChangeShouldSetResponder',
+        captured: 'onSelectionChangeShouldSetResponderCapture'
+      },
+      dependencies: [TOP_SELECTION_CHANGE]
+    },
+
+    /**
+     * On a `touchMove`/`mouseMove`, is it desired that this element become the
+     * responder?
+     */
+    moveShouldSetResponder: {
+      phasedRegistrationNames: {
+        bubbled: 'onMoveShouldSetResponder',
+        captured: 'onMoveShouldSetResponderCapture'
+      },
+      dependencies: moveDependencies
+    },
+
+    /**
+     * Direct responder events dispatched directly to responder. Do not bubble.
+     */
+    responderStart: {
+      registrationName: 'onResponderStart',
+      dependencies: startDependencies
+    },
+    responderMove: {
+      registrationName: 'onResponderMove',
+      dependencies: moveDependencies
+    },
+    responderEnd: {
+      registrationName: 'onResponderEnd',
+      dependencies: endDependencies
+    },
+    responderRelease: {
+      registrationName: 'onResponderRelease',
+      dependencies: endDependencies
+    },
+    responderTerminationRequest: {
+      registrationName: 'onResponderTerminationRequest',
+      dependencies: []
+    },
+    responderGrant: {
+      registrationName: 'onResponderGrant',
+      dependencies: []
+    },
+    responderReject: {
+      registrationName: 'onResponderReject',
+      dependencies: []
+    },
+    responderTerminate: {
+      registrationName: 'onResponderTerminate',
+      dependencies: []
+    }
+  };
+  /**
+   *
+   * Responder System:
+   * ----------------
+   *
+   * - A global, solitary "interaction lock" on a view.
+   * - If a node becomes the responder, it should convey visual feedback
+   *   immediately to indicate so, either by highlighting or moving accordingly.
+   * - To be the responder means, that touches are exclusively important to that
+   *   responder view, and no other view.
+   * - While touches are still occurring, the responder lock can be transferred to
+   *   a new view, but only to increasingly "higher" views (meaning ancestors of
+   *   the current responder).
+   *
+   * Responder being granted:
+   * ------------------------
+   *
+   * - Touch starts, moves, and scrolls can cause an ID to become the responder.
+   * - We capture/bubble `startShouldSetResponder`/`moveShouldSetResponder` to
+   *   the "appropriate place".
+   * - If nothing is currently the responder, the "appropriate place" is the
+   *   initiating event's `targetID`.
+   * - If something *is* already the responder, the "appropriate place" is the
+   *   first common ancestor of the event target and the current `responderInst`.
+   * - Some negotiation happens: See the timing diagram below.
+   * - Scrolled views automatically become responder. The reasoning is that a
+   *   platform scroll view that isn't built on top of the responder system has
+   *   began scrolling, and the active responder must now be notified that the
+   *   interaction is no longer locked to it - the system has taken over.
+   *
+   * - Responder being released:
+   *   As soon as no more touches that *started* inside of descendants of the
+   *   *current* responderInst, an `onResponderRelease` event is dispatched to the
+   *   current responder, and the responder lock is released.
+   *
+   * TODO:
+   * - on "end", a callback hook for `onResponderEndShouldRemainResponder` that
+   *   determines if the responder lock should remain.
+   * - If a view shouldn't "remain" the responder, any active touches should by
+   *   default be considered "dead" and do not influence future negotiations or
+   *   bubble paths. It should be as if those touches do not exist.
+   * -- For multitouch: Usually a translate-z will choose to "remain" responder
+   *  after one out of many touches ended. For translate-y, usually the view
+   *  doesn't wish to "remain" responder after one of many touches end.
+   * - Consider building this on top of a `stopPropagation` model similar to
+   *   `W3C` events.
+   * - Ensure that `onResponderTerminate` is called on touch cancels, whether or
+   *   not `onResponderTerminationRequest` returns `true` or `false`.
+   *
+   */
+
+  /*                                             Negotiation Performed
+                                               +-----------------------+
+                                              /                         \
+  Process low level events to    +     Current Responder      +   wantsResponderID
+  determine who to perform negot-|   (if any exists at all)   |
+  iation/transition              | Otherwise just pass through|
+  -------------------------------+----------------------------+------------------+
+  Bubble to find first ID        |                            |
+  to return true:wantsResponderID|                            |
+                                 |                            |
+       +-------------+           |                            |
+       | onTouchStart|           |                            |
+       +------+------+     none  |                            |
+              |            return|                            |
+  +-----------v-------------+true| +------------------------+ |
+  |onStartShouldSetResponder|----->|onResponderStart (cur)  |<-----------+
+  +-----------+-------------+    | +------------------------+ |          |
+              |                  |                            | +--------+-------+
+              | returned true for|       false:REJECT +-------->|onResponderReject
+              | wantsResponderID |                    |       | +----------------+
+              | (now attempt     | +------------------+-----+ |
+              |  handoff)        | |   onResponder          | |
+              +------------------->|      TerminationRequest| |
+                                 | +------------------+-----+ |
+                                 |                    |       | +----------------+
+                                 |         true:GRANT +-------->|onResponderGrant|
+                                 |                            | +--------+-------+
+                                 | +------------------------+ |          |
+                                 | |   onResponderTerminate |<-----------+
+                                 | +------------------+-----+ |
+                                 |                    |       | +----------------+
+                                 |                    +-------->|onResponderStart|
+                                 |                            | +----------------+
+  Bubble to find first ID        |                            |
+  to return true:wantsResponderID|                            |
+                                 |                            |
+       +-------------+           |                            |
+       | onTouchMove |           |                            |
+       +------+------+     none  |                            |
+              |            return|                            |
+  +-----------v-------------+true| +------------------------+ |
+  |onMoveShouldSetResponder |----->|onResponderMove (cur)   |<-----------+
+  +-----------+-------------+    | +------------------------+ |          |
+              |                  |                            | +--------+-------+
+              | returned true for|       false:REJECT +-------->|onResponderRejec|
+              | wantsResponderID |                    |       | +----------------+
+              | (now attempt     | +------------------+-----+ |
+              |  handoff)        | |   onResponder          | |
+              +------------------->|      TerminationRequest| |
+                                 | +------------------+-----+ |
+                                 |                    |       | +----------------+
+                                 |         true:GRANT +-------->|onResponderGrant|
+                                 |                            | +--------+-------+
+                                 | +------------------------+ |          |
+                                 | |   onResponderTerminate |<-----------+
+                                 | +------------------+-----+ |
+                                 |                    |       | +----------------+
+                                 |                    +-------->|onResponderMove |
+                                 |                            | +----------------+
+                                 |                            |
+                                 |                            |
+        Some active touch started|                            |
+        inside current responder | +------------------------+ |
+        +------------------------->|      onResponderEnd    | |
+        |                        | +------------------------+ |
+    +---+---------+              |                            |
+    | onTouchEnd  |              |                            |
+    +---+---------+              |                            |
+        |                        | +------------------------+ |
+        +------------------------->|     onResponderEnd     | |
+        No active touches started| +-----------+------------+ |
+        inside current responder |             |              |
+                                 |             v              |
+                                 | +------------------------+ |
+                                 | |    onResponderRelease  | |
+                                 | +------------------------+ |
+                                 |                            |
+                                 +                            + */
+
+  /**
+   * A note about event ordering in the `EventPluginRegistry`.
+   *
+   * Suppose plugins are injected in the following order:
+   *
+   * `[R, S, C]`
+   *
+   * To help illustrate the example, assume `S` is `SimpleEventPlugin` (for
+   * `onClick` etc) and `R` is `ResponderEventPlugin`.
+   *
+   * "Deferred-Dispatched Events":
+   *
+   * - The current event plugin system will traverse the list of injected plugins,
+   *   in order, and extract events by collecting the plugin's return value of
+   *   `extractEvents()`.
+   * - These events that are returned from `extractEvents` are "deferred
+   *   dispatched events".
+   * - When returned from `extractEvents`, deferred-dispatched events contain an
+   *   "accumulation" of deferred dispatches.
+   * - These deferred dispatches are accumulated/collected before they are
+   *   returned, but processed at a later time by the `EventPluginRegistry` (hence the
+   *   name deferred).
+   *
+   * In the process of returning their deferred-dispatched events, event plugins
+   * themselves can dispatch events on-demand without returning them from
+   * `extractEvents`. Plugins might want to do this, so that they can use event
+   * dispatching as a tool that helps them decide which events should be extracted
+   * in the first place.
+   *
+   * "On-Demand-Dispatched Events":
+   *
+   * - On-demand-dispatched events are not returned from `extractEvents`.
+   * - On-demand-dispatched events are dispatched during the process of returning
+   *   the deferred-dispatched events.
+   * - They should not have side effects.
+   * - They should be avoided, and/or eventually be replaced with another
+   *   abstraction that allows event plugins to perform multiple "rounds" of event
+   *   extraction.
+   *
+   * Therefore, the sequence of event dispatches becomes:
+   *
+   * - `R`s on-demand events (if any)   (dispatched by `R` on-demand)
+   * - `S`s on-demand events (if any)   (dispatched by `S` on-demand)
+   * - `C`s on-demand events (if any)   (dispatched by `C` on-demand)
+   * - `R`s extracted events (if any)   (dispatched by `EventPluginRegistry`)
+   * - `S`s extracted events (if any)   (dispatched by `EventPluginRegistry`)
+   * - `C`s extracted events (if any)   (dispatched by `EventPluginRegistry`)
+   *
+   * In the case of `ResponderEventPlugin`: If the `startShouldSetResponder`
+   * on-demand dispatch returns `true` (and some other details are satisfied) the
+   * `onResponderGrant` deferred dispatched event is returned from
+   * `extractEvents`. The sequence of dispatch executions in this case
+   * will appear as follows:
+   *
+   * - `startShouldSetResponder` (`ResponderEventPlugin` dispatches on-demand)
+   * - `touchStartCapture`       (`EventPluginRegistry` dispatches as usual)
+   * - `touchStart`              (`EventPluginRegistry` dispatches as usual)
+   * - `responderGrant/Reject`   (`EventPluginRegistry` dispatches as usual)
+   */
+
+  function setResponderAndExtractTransfer(topLevelType, targetInst, nativeEvent, nativeEventTarget) {
+    var shouldSetEventType = isStartish(topLevelType) ? eventTypes.startShouldSetResponder : isMoveish(topLevelType) ? eventTypes.moveShouldSetResponder : topLevelType === TOP_SELECTION_CHANGE ? eventTypes.selectionChangeShouldSetResponder : eventTypes.scrollShouldSetResponder; // TODO: stop one short of the current responder.
+
+    var bubbleShouldSetFrom = !responderInst ? targetInst : getLowestCommonAncestor(responderInst, targetInst); // When capturing/bubbling the "shouldSet" event, we want to skip the target
+    // (deepest ID) if it happens to be the current responder. The reasoning:
+    // It's strange to get an `onMoveShouldSetResponder` when you're *already*
+    // the responder.
+
+    var skipOverBubbleShouldSetFrom = bubbleShouldSetFrom === responderInst;
+    var shouldSetEvent = ResponderSyntheticEvent.getPooled(shouldSetEventType, bubbleShouldSetFrom, nativeEvent, nativeEventTarget);
+    shouldSetEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
+
+    if (skipOverBubbleShouldSetFrom) {
+      accumulateTwoPhaseDispatchesSkipTarget(shouldSetEvent);
+    } else {
+      accumulateTwoPhaseDispatches(shouldSetEvent);
+    }
+
+    var wantsResponderInst = executeDispatchesInOrderStopAtTrue(shouldSetEvent);
+
+    if (!shouldSetEvent.isPersistent()) {
+      shouldSetEvent.constructor.release(shouldSetEvent);
+    }
+
+    if (!wantsResponderInst || wantsResponderInst === responderInst) {
+      return null;
+    }
+
+    var extracted;
+    var grantEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderGrant, wantsResponderInst, nativeEvent, nativeEventTarget);
+    grantEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
+    accumulateDirectDispatches(grantEvent);
+    var blockHostResponder = executeDirectDispatch(grantEvent) === true;
+
+    if (responderInst) {
+      var terminationRequestEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderTerminationRequest, responderInst, nativeEvent, nativeEventTarget);
+      terminationRequestEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
+      accumulateDirectDispatches(terminationRequestEvent);
+      var shouldSwitch = !hasDispatches(terminationRequestEvent) || executeDirectDispatch(terminationRequestEvent);
+
+      if (!terminationRequestEvent.isPersistent()) {
+        terminationRequestEvent.constructor.release(terminationRequestEvent);
+      }
+
+      if (shouldSwitch) {
+        var terminateEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderTerminate, responderInst, nativeEvent, nativeEventTarget);
+        terminateEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
+        accumulateDirectDispatches(terminateEvent);
+        extracted = accumulate(extracted, [grantEvent, terminateEvent]);
+        changeResponder(wantsResponderInst, blockHostResponder);
+      } else {
+        var rejectEvent = ResponderSyntheticEvent.getPooled(eventTypes.responderReject, wantsResponderInst, nativeEvent, nativeEventTarget);
+        rejectEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
+        accumulateDirectDispatches(rejectEvent);
+        extracted = accumulate(extracted, rejectEvent);
+      }
+    } else {
+      extracted = accumulate(extracted, grantEvent);
+      changeResponder(wantsResponderInst, blockHostResponder);
+    }
+
+    return extracted;
+  }
+  /**
+   * A transfer is a negotiation between a currently set responder and the next
+   * element to claim responder status. Any start event could trigger a transfer
+   * of responderInst. Any move event could trigger a transfer.
+   *
+   * @param {string} topLevelType Record from `BrowserEventConstants`.
+   * @return {boolean} True if a transfer of responder could possibly occur.
+   */
+
+
+  function canTriggerTransfer(topLevelType, topLevelInst, nativeEvent) {
+    return topLevelInst && ( // responderIgnoreScroll: We are trying to migrate away from specifically
+    // tracking native scroll events here and responderIgnoreScroll indicates we
+    // will send topTouchCancel to handle canceling touch events instead
+    topLevelType === TOP_SCROLL && !nativeEvent.responderIgnoreScroll || trackedTouchCount > 0 && topLevelType === TOP_SELECTION_CHANGE || isStartish(topLevelType) || isMoveish(topLevelType));
+  }
+  /**
+   * Returns whether or not this touch end event makes it such that there are no
+   * longer any touches that started inside of the current `responderInst`.
+   *
+   * @param {NativeEvent} nativeEvent Native touch end event.
+   * @return {boolean} Whether or not this touch end event ends the responder.
+   */
+
+
+  function noResponderTouches(nativeEvent) {
+    var touches = nativeEvent.touches;
+
+    if (!touches || touches.length === 0) {
+      return true;
+    }
+
+    for (var i = 0; i < touches.length; i++) {
+      var activeTouch = touches[i];
+      var target = activeTouch.target;
+
+      if (target !== null && target !== undefined && target !== 0) {
+        // Is the original touch location inside of the current responder?
+        var targetInst = getInstanceFromNode(target);
+
+        if (isAncestor(responderInst, targetInst)) {
+          return false;
+        }
+      }
+    }
+
+    return true;
+  }
+
+  var ResponderEventPlugin = {
+    /* For unit testing only */
+    _getResponder: function () {
+      return responderInst;
+    },
+    eventTypes: eventTypes,
+
+    /**
+     * We must be resilient to `targetInst` being `null` on `touchMove` or
+     * `touchEnd`. On certain platforms, this means that a native scroll has
+     * assumed control and the original touch targets are destroyed.
+     */
+    extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) {
+      if (isStartish(topLevelType)) {
+        trackedTouchCount += 1;
+      } else if (isEndish(topLevelType)) {
+        if (trackedTouchCount >= 0) {
+          trackedTouchCount -= 1;
+        } else {
+          {
+            warn('Ended a touch event which was not counted in `trackedTouchCount`.');
+          }
+
+          return null;
+        }
+      }
+
+      ResponderTouchHistoryStore.recordTouchTrack(topLevelType, nativeEvent);
+      var extracted = canTriggerTransfer(topLevelType, targetInst, nativeEvent) ? setResponderAndExtractTransfer(topLevelType, targetInst, nativeEvent, nativeEventTarget) : null; // Responder may or may not have transferred on a new touch start/move.
+      // Regardless, whoever is the responder after any potential transfer, we
+      // direct all touch start/move/ends to them in the form of
+      // `onResponderMove/Start/End`. These will be called for *every* additional
+      // finger that move/start/end, dispatched directly to whoever is the
+      // current responder at that moment, until the responder is "released".
+      //
+      // These multiple individual change touch events are are always bookended
+      // by `onResponderGrant`, and one of
+      // (`onResponderRelease/onResponderTerminate`).
+
+      var isResponderTouchStart = responderInst && isStartish(topLevelType);
+      var isResponderTouchMove = responderInst && isMoveish(topLevelType);
+      var isResponderTouchEnd = responderInst && isEndish(topLevelType);
+      var incrementalTouch = isResponderTouchStart ? eventTypes.responderStart : isResponderTouchMove ? eventTypes.responderMove : isResponderTouchEnd ? eventTypes.responderEnd : null;
+
+      if (incrementalTouch) {
+        var gesture = ResponderSyntheticEvent.getPooled(incrementalTouch, responderInst, nativeEvent, nativeEventTarget);
+        gesture.touchHistory = ResponderTouchHistoryStore.touchHistory;
+        accumulateDirectDispatches(gesture);
+        extracted = accumulate(extracted, gesture);
+      }
+
+      var isResponderTerminate = responderInst && topLevelType === TOP_TOUCH_CANCEL;
+      var isResponderRelease = responderInst && !isResponderTerminate && isEndish(topLevelType) && noResponderTouches(nativeEvent);
+      var finalTouch = isResponderTerminate ? eventTypes.responderTerminate : isResponderRelease ? eventTypes.responderRelease : null;
+
+      if (finalTouch) {
+        var finalEvent = ResponderSyntheticEvent.getPooled(finalTouch, responderInst, nativeEvent, nativeEventTarget);
+        finalEvent.touchHistory = ResponderTouchHistoryStore.touchHistory;
+        accumulateDirectDispatches(finalEvent);
+        extracted = accumulate(extracted, finalEvent);
+        changeResponder(null);
+      }
+
+      return extracted;
+    },
+    GlobalResponderHandler: null,
+    injection: {
+      /**
+       * @param {{onChange: (ReactID, ReactID) => void} GlobalResponderHandler
+       * Object that handles any change in responder. Use this to inject
+       * integration with an existing touch handling system etc.
+       */
+      injectGlobalResponderHandler: function (GlobalResponderHandler) {
+        ResponderEventPlugin.GlobalResponderHandler = GlobalResponderHandler;
+      }
+    }
+  };
+
+  // Keep in sync with ReactDOM.js, ReactTestUtils.js, and ReactTestUtilsAct.js:
+
+  var _ReactDOM$__SECRET_IN = ReactDOM.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Events,
+      getInstanceFromNode$1 = _ReactDOM$__SECRET_IN[0],
+      getNodeFromInstance$1 = _ReactDOM$__SECRET_IN[1],
+      getFiberCurrentPropsFromNode$1 = _ReactDOM$__SECRET_IN[2],
+      injectEventPluginsByName = _ReactDOM$__SECRET_IN[3];
+  setComponentTree(getFiberCurrentPropsFromNode$1, getInstanceFromNode$1, getNodeFromInstance$1);
+
+  var ReactDOMUnstableNativeDependencies = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    ResponderEventPlugin: ResponderEventPlugin,
+    ResponderTouchHistoryStore: ResponderTouchHistoryStore,
+    injectEventPluginsByName: injectEventPluginsByName
+  });
+
+  var unstableNativeDependencies = ReactDOMUnstableNativeDependencies;
+
+  return unstableNativeDependencies;
+
+})));
diff --git a/igv_component/node_modules/react-dom/umd/react-dom-unstable-native-dependencies.production.min.js b/igv_component/node_modules/react-dom/umd/react-dom-unstable-native-dependencies.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..1cc4e51b84f0261a2912d721f9c36da20af7ac0b
--- /dev/null
+++ b/igv_component/node_modules/react-dom/umd/react-dom-unstable-native-dependencies.production.min.js
@@ -0,0 +1,28 @@
+/** @license React v16.13.1
+ * react-dom-unstable-native-dependencies.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';(function(h,p){"object"===typeof exports&&"undefined"!==typeof module?module.exports=p(require("react-dom"),require("react")):"function"===typeof define&&define.amd?define(["react-dom","react"],p):(h=h||self,h.ReactDOMUnstableNativeDependencies=p(h.ReactDOM,h.React))})(this,function(h,p){function x(a){for(var b="https://reactjs.org/docs/error-decoder.html?invariant="+a,c=1;c<arguments.length;c++)b+="&args[]="+encodeURIComponent(arguments[c]);return"Minified React error #"+a+"; visit "+
+b+" for the full message or use the non-minified dev environment for full errors and additional helpful warnings."}function M(a){var b=a._dispatchListeners,c=a._dispatchInstances;if(Array.isArray(b))throw Error(x(103));a.currentTarget=b?N(c):null;b=b?b(a):null;a.currentTarget=null;a._dispatchListeners=null;a._dispatchInstances=null;return b}function r(a){do a=a.return;while(a&&5!==a.tag);return a?a:null}function O(a,b,c){for(var f=[];a;)f.push(a),a=r(a);for(a=f.length;0<a--;)b(f[a],"captured",c);
+for(a=0;a<f.length;a++)b(f[a],"bubbled",c)}function P(a,b){var c=a.stateNode;if(!c)return null;var f=Q(c);if(!f)return null;c=f[b];a:switch(b){case "onClick":case "onClickCapture":case "onDoubleClick":case "onDoubleClickCapture":case "onMouseDown":case "onMouseDownCapture":case "onMouseMove":case "onMouseMoveCapture":case "onMouseUp":case "onMouseUpCapture":case "onMouseEnter":(f=!f.disabled)||(a=a.type,f=!("button"===a||"input"===a||"select"===a||"textarea"===a));a=!f;break a;default:a=!1}if(a)return null;
+if(c&&"function"!==typeof c)throw Error(x(231,b,typeof c));return c}function C(a,b){if(null==b)throw Error(x(30));if(null==a)return b;if(Array.isArray(a)){if(Array.isArray(b))return a.push.apply(a,b),a;a.push(b);return a}return Array.isArray(b)?[a].concat(b):[a,b]}function u(a,b,c){Array.isArray(a)?a.forEach(b,c):a&&b.call(c,a)}function R(a,b,c){if(b=P(a,c.dispatchConfig.phasedRegistrationNames[b]))c._dispatchListeners=C(c._dispatchListeners,b),c._dispatchInstances=C(c._dispatchInstances,a)}function W(a){a&&
+a.dispatchConfig.phasedRegistrationNames&&O(a._targetInst,R,a)}function X(a){if(a&&a.dispatchConfig.phasedRegistrationNames){var b=a._targetInst;b=b?r(b):null;O(b,R,a)}}function y(a){if(a&&a.dispatchConfig.registrationName){var b=a._targetInst;if(b&&a&&a.dispatchConfig.registrationName){var c=P(b,a.dispatchConfig.registrationName);c&&(a._dispatchListeners=C(a._dispatchListeners,c),a._dispatchInstances=C(a._dispatchInstances,b))}}}function D(){return!0}function E(){return!1}function z(a,b,c,f){this.dispatchConfig=
+a;this._targetInst=b;this.nativeEvent=c;a=this.constructor.Interface;for(var d in a)a.hasOwnProperty(d)&&((b=a[d])?this[d]=b(c):"target"===d?this.target=f:this[d]=c[d]);this.isDefaultPrevented=(null!=c.defaultPrevented?c.defaultPrevented:!1===c.returnValue)?D:E;this.isPropagationStopped=E;return this}function Y(a,b,c,f){if(this.eventPool.length){var d=this.eventPool.pop();this.call(d,a,b,c,f);return d}return new this(a,b,c,f)}function Z(a){if(!(a instanceof this))throw Error(x(279));a.destructor();
+10>this.eventPool.length&&this.eventPool.push(a)}function S(a){a.eventPool=[];a.getPooled=Y;a.release=Z}function A(a){return"touchstart"===a||"mousedown"===a}function F(a){return"touchmove"===a||"mousemove"===a}function G(a){return"touchend"===a||"touchcancel"===a||"mouseup"===a}function l(a){return a.timeStamp||a.timestamp}function J(a){a=a.identifier;if(null==a)throw Error(x(138));return a}function aa(a){var b=J(a),c=v[b];c?(c.touchActive=!0,c.startPageX=a.pageX,c.startPageY=a.pageY,c.startTimeStamp=
+l(a),c.currentPageX=a.pageX,c.currentPageY=a.pageY,c.currentTimeStamp=l(a),c.previousPageX=a.pageX,c.previousPageY=a.pageY,c.previousTimeStamp=l(a)):(c={touchActive:!0,startPageX:a.pageX,startPageY:a.pageY,startTimeStamp:l(a),currentPageX:a.pageX,currentPageY:a.pageY,currentTimeStamp:l(a),previousPageX:a.pageX,previousPageY:a.pageY,previousTimeStamp:l(a)},v[b]=c);q.mostRecentTimeStamp=l(a)}function ba(a){var b=v[J(a)];b&&(b.touchActive=!0,b.previousPageX=b.currentPageX,b.previousPageY=b.currentPageY,
+b.previousTimeStamp=b.currentTimeStamp,b.currentPageX=a.pageX,b.currentPageY=a.pageY,b.currentTimeStamp=l(a),q.mostRecentTimeStamp=l(a))}function ca(a){var b=v[J(a)];b&&(b.touchActive=!1,b.previousPageX=b.currentPageX,b.previousPageY=b.currentPageY,b.previousTimeStamp=b.currentTimeStamp,b.currentPageX=a.pageX,b.currentPageY=a.pageY,b.currentTimeStamp=l(a),q.mostRecentTimeStamp=l(a))}function B(a,b){if(null==b)throw Error(x(334));return null==a?b:Array.isArray(a)?a.concat(b):Array.isArray(b)?[a].concat(b):
+[a,b]}var Q=null,T=null,N=null,K=p.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.assign;K(z.prototype,{preventDefault:function(){this.defaultPrevented=!0;var a=this.nativeEvent;a&&(a.preventDefault?a.preventDefault():"unknown"!==typeof a.returnValue&&(a.returnValue=!1),this.isDefaultPrevented=D)},stopPropagation:function(){var a=this.nativeEvent;a&&(a.stopPropagation?a.stopPropagation():"unknown"!==typeof a.cancelBubble&&(a.cancelBubble=!0),this.isPropagationStopped=D)},persist:function(){this.isPersistent=
+D},isPersistent:E,destructor:function(){var a=this.constructor.Interface,b;for(b in a)this[b]=null;this.nativeEvent=this._targetInst=this.dispatchConfig=null;this.isPropagationStopped=this.isDefaultPrevented=E;this._dispatchInstances=this._dispatchListeners=null}});z.Interface={type:null,target:null,currentTarget:function(){return null},eventPhase:null,bubbles:null,cancelable:null,timeStamp:function(a){return a.timeStamp||Date.now()},defaultPrevented:null,isTrusted:null};z.extend=function(a){function b(){return c.apply(this,
+arguments)}var c=this,f=function(){};f.prototype=c.prototype;f=new f;K(f,b.prototype);b.prototype=f;b.prototype.constructor=b;b.Interface=K({},c.Interface,a);b.extend=c.extend;S(b);return b};S(z);var w=z.extend({touchHistory:function(a){return null}});p=["touchstart","mousedown"];var U=["touchmove","mousemove"],V=["touchcancel","touchend","mouseup"],v=[],q={touchBank:v,numberActiveTouches:0,indexOfSingleActiveTouch:-1,mostRecentTimeStamp:0},t={recordTouchTrack:function(a,b){if(F(a))b.changedTouches.forEach(ba);
+else if(A(a))b.changedTouches.forEach(aa),q.numberActiveTouches=b.touches.length,1===q.numberActiveTouches&&(q.indexOfSingleActiveTouch=b.touches[0].identifier);else if(G(a)&&(b.changedTouches.forEach(ca),q.numberActiveTouches=b.touches.length,1===q.numberActiveTouches))for(a=0;a<v.length;a++)if(b=v[a],null!=b&&b.touchActive){q.indexOfSingleActiveTouch=a;break}},touchHistory:q},k=null,H=0,L=function(a,b){var c=k;k=a;if(null!==I.GlobalResponderHandler)I.GlobalResponderHandler.onChange(c,a,b)},m={startShouldSetResponder:{phasedRegistrationNames:{bubbled:"onStartShouldSetResponder",
+captured:"onStartShouldSetResponderCapture"},dependencies:p},scrollShouldSetResponder:{phasedRegistrationNames:{bubbled:"onScrollShouldSetResponder",captured:"onScrollShouldSetResponderCapture"},dependencies:["scroll"]},selectionChangeShouldSetResponder:{phasedRegistrationNames:{bubbled:"onSelectionChangeShouldSetResponder",captured:"onSelectionChangeShouldSetResponderCapture"},dependencies:["selectionchange"]},moveShouldSetResponder:{phasedRegistrationNames:{bubbled:"onMoveShouldSetResponder",captured:"onMoveShouldSetResponderCapture"},
+dependencies:U},responderStart:{registrationName:"onResponderStart",dependencies:p},responderMove:{registrationName:"onResponderMove",dependencies:U},responderEnd:{registrationName:"onResponderEnd",dependencies:V},responderRelease:{registrationName:"onResponderRelease",dependencies:V},responderTerminationRequest:{registrationName:"onResponderTerminationRequest",dependencies:[]},responderGrant:{registrationName:"onResponderGrant",dependencies:[]},responderReject:{registrationName:"onResponderReject",
+dependencies:[]},responderTerminate:{registrationName:"onResponderTerminate",dependencies:[]}},I={_getResponder:function(){return k},eventTypes:m,extractEvents:function(a,b,c,f,d){if(A(a))H+=1;else if(G(a))if(0<=H)--H;else return null;t.recordTouchTrack(a,c);if(b&&("scroll"===a&&!c.responderIgnoreScroll||0<H&&"selectionchange"===a||A(a)||F(a))){d=A(a)?m.startShouldSetResponder:F(a)?m.moveShouldSetResponder:"selectionchange"===a?m.selectionChangeShouldSetResponder:m.scrollShouldSetResponder;if(k)b:{var e=
+k;for(var g=0,h=e;h;h=r(h))g++;h=0;for(var l=b;l;l=r(l))h++;for(;0<g-h;)e=r(e),g--;for(;0<h-g;)b=r(b),h--;for(;g--;){if(e===b||e===b.alternate)break b;e=r(e);b=r(b)}e=null}else e=b;b=e===k;e=w.getPooled(d,e,c,f);e.touchHistory=t.touchHistory;b?u(e,X):u(e,W);b:{d=e._dispatchListeners;b=e._dispatchInstances;if(Array.isArray(d))for(g=0;g<d.length&&!e.isPropagationStopped();g++){if(d[g](e,b[g])){d=b[g];break b}}else if(d&&d(e,b)){d=b;break b}d=null}e._dispatchInstances=null;e._dispatchListeners=null;
+e.isPersistent()||e.constructor.release(e);if(d&&d!==k)if(e=w.getPooled(m.responderGrant,d,c,f),e.touchHistory=t.touchHistory,u(e,y),b=!0===M(e),k)if(g=w.getPooled(m.responderTerminationRequest,k,c,f),g.touchHistory=t.touchHistory,u(g,y),h=!g._dispatchListeners||M(g),g.isPersistent()||g.constructor.release(g),h){g=w.getPooled(m.responderTerminate,k,c,f);g.touchHistory=t.touchHistory;u(g,y);var n=B(n,[e,g]);L(d,b)}else d=w.getPooled(m.responderReject,d,c,f),d.touchHistory=t.touchHistory,u(d,y),n=B(n,
+d);else n=B(n,e),L(d,b);else n=null}else n=null;d=k&&A(a);e=k&&F(a);b=k&&G(a);if(d=d?m.responderStart:e?m.responderMove:b?m.responderEnd:null)d=w.getPooled(d,k,c,f),d.touchHistory=t.touchHistory,u(d,y),n=B(n,d);d=k&&"touchcancel"===a;if(a=k&&!d&&G(a))a:{if((a=c.touches)&&0!==a.length)for(e=0;e<a.length;e++)if(b=a[e].target,null!==b&&void 0!==b&&0!==b){g=T(b);b:{for(b=k;g;){if(b===g||b===g.alternate){b=!0;break b}g=r(g)}b=!1}if(b){a=!1;break a}}a=!0}if(a=d?m.responderTerminate:a?m.responderRelease:
+null)c=w.getPooled(a,k,c,f),c.touchHistory=t.touchHistory,u(c,y),n=B(n,c),L(null);return n},GlobalResponderHandler:null,injection:{injectGlobalResponderHandler:function(a){I.GlobalResponderHandler=a}}};h=h.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Events;p=h[3];(function(a,b,c){Q=a;T=b;N=c})(h[2],h[0],h[1]);return{__proto__:null,ResponderEventPlugin:I,ResponderTouchHistoryStore:t,injectEventPluginsByName:p}});
diff --git a/igv_component/node_modules/react-dom/umd/react-dom.development.js b/igv_component/node_modules/react-dom/umd/react-dom.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..24b86831f6275218dbe77cf56f4446b7addb9534
--- /dev/null
+++ b/igv_component/node_modules/react-dom/umd/react-dom.development.js
@@ -0,0 +1,25147 @@
+/** @license React v16.14.0
+ * react-dom.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports, require('react')) :
+  typeof define === 'function' && define.amd ? define(['exports', 'react'], factory) :
+  (global = global || self, factory(global.ReactDOM = {}, global.React));
+}(this, (function (exports, React) { 'use strict';
+
+  var ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED; // Prevent newer renderers from RTE when used with older react package versions.
+  // Current owner and dispatcher used to share the same ref,
+  // but PR #14548 split them out to better support the react-debug-tools package.
+
+  if (!ReactSharedInternals.hasOwnProperty('ReactCurrentDispatcher')) {
+    ReactSharedInternals.ReactCurrentDispatcher = {
+      current: null
+    };
+  }
+
+  if (!ReactSharedInternals.hasOwnProperty('ReactCurrentBatchConfig')) {
+    ReactSharedInternals.ReactCurrentBatchConfig = {
+      suspense: null
+    };
+  }
+
+  // by calls to these methods by a Babel plugin.
+  //
+  // In PROD (or in packages without access to React internals),
+  // they are left as they are instead.
+
+  function warn(format) {
+    {
+      for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+        args[_key - 1] = arguments[_key];
+      }
+
+      printWarning('warn', format, args);
+    }
+  }
+  function error(format) {
+    {
+      for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+        args[_key2 - 1] = arguments[_key2];
+      }
+
+      printWarning('error', format, args);
+    }
+  }
+
+  function printWarning(level, format, args) {
+    // When changing this logic, you might want to also
+    // update consoleWithStackDev.www.js as well.
+    {
+      var hasExistingStack = args.length > 0 && typeof args[args.length - 1] === 'string' && args[args.length - 1].indexOf('\n    in') === 0;
+
+      if (!hasExistingStack) {
+        var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+        var stack = ReactDebugCurrentFrame.getStackAddendum();
+
+        if (stack !== '') {
+          format += '%s';
+          args = args.concat([stack]);
+        }
+      }
+
+      var argsWithFormat = args.map(function (item) {
+        return '' + item;
+      }); // Careful: RN currently depends on this prefix
+
+      argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it
+      // breaks IE9: https://github.com/facebook/react/issues/13610
+      // eslint-disable-next-line react-internal/no-production-logging
+
+      Function.prototype.apply.call(console[level], console, argsWithFormat);
+
+      try {
+        // --- Welcome to debugging React ---
+        // This error was thrown as a convenience so that you can use this stack
+        // to find the callsite that caused this warning to fire.
+        var argIndex = 0;
+        var message = 'Warning: ' + format.replace(/%s/g, function () {
+          return args[argIndex++];
+        });
+        throw new Error(message);
+      } catch (x) {}
+    }
+  }
+
+  if (!React) {
+    {
+      throw Error( "ReactDOM was loaded before React. Make sure you load the React package before loading ReactDOM." );
+    }
+  }
+
+  var invokeGuardedCallbackImpl = function (name, func, context, a, b, c, d, e, f) {
+    var funcArgs = Array.prototype.slice.call(arguments, 3);
+
+    try {
+      func.apply(context, funcArgs);
+    } catch (error) {
+      this.onError(error);
+    }
+  };
+
+  {
+    // In DEV mode, we swap out invokeGuardedCallback for a special version
+    // that plays more nicely with the browser's DevTools. The idea is to preserve
+    // "Pause on exceptions" behavior. Because React wraps all user-provided
+    // functions in invokeGuardedCallback, and the production version of
+    // invokeGuardedCallback uses a try-catch, all user exceptions are treated
+    // like caught exceptions, and the DevTools won't pause unless the developer
+    // takes the extra step of enabling pause on caught exceptions. This is
+    // unintuitive, though, because even though React has caught the error, from
+    // the developer's perspective, the error is uncaught.
+    //
+    // To preserve the expected "Pause on exceptions" behavior, we don't use a
+    // try-catch in DEV. Instead, we synchronously dispatch a fake event to a fake
+    // DOM node, and call the user-provided callback from inside an event handler
+    // for that fake event. If the callback throws, the error is "captured" using
+    // a global event handler. But because the error happens in a different
+    // event loop context, it does not interrupt the normal program flow.
+    // Effectively, this gives us try-catch behavior without actually using
+    // try-catch. Neat!
+    // Check that the browser supports the APIs we need to implement our special
+    // DEV version of invokeGuardedCallback
+    if (typeof window !== 'undefined' && typeof window.dispatchEvent === 'function' && typeof document !== 'undefined' && typeof document.createEvent === 'function') {
+      var fakeNode = document.createElement('react');
+
+      var invokeGuardedCallbackDev = function (name, func, context, a, b, c, d, e, f) {
+        // If document doesn't exist we know for sure we will crash in this method
+        // when we call document.createEvent(). However this can cause confusing
+        // errors: https://github.com/facebookincubator/create-react-app/issues/3482
+        // So we preemptively throw with a better message instead.
+        if (!(typeof document !== 'undefined')) {
+          {
+            throw Error( "The `document` global was defined when React was initialized, but is not defined anymore. This can happen in a test environment if a component schedules an update from an asynchronous callback, but the test has already finished running. To solve this, you can either unmount the component at the end of your test (and ensure that any asynchronous operations get canceled in `componentWillUnmount`), or you can change the test itself to be asynchronous." );
+          }
+        }
+
+        var evt = document.createEvent('Event'); // Keeps track of whether the user-provided callback threw an error. We
+        // set this to true at the beginning, then set it to false right after
+        // calling the function. If the function errors, `didError` will never be
+        // set to false. This strategy works even if the browser is flaky and
+        // fails to call our global error handler, because it doesn't rely on
+        // the error event at all.
+
+        var didError = true; // Keeps track of the value of window.event so that we can reset it
+        // during the callback to let user code access window.event in the
+        // browsers that support it.
+
+        var windowEvent = window.event; // Keeps track of the descriptor of window.event to restore it after event
+        // dispatching: https://github.com/facebook/react/issues/13688
+
+        var windowEventDescriptor = Object.getOwnPropertyDescriptor(window, 'event'); // Create an event handler for our fake event. We will synchronously
+        // dispatch our fake event using `dispatchEvent`. Inside the handler, we
+        // call the user-provided callback.
+
+        var funcArgs = Array.prototype.slice.call(arguments, 3);
+
+        function callCallback() {
+          // We immediately remove the callback from event listeners so that
+          // nested `invokeGuardedCallback` calls do not clash. Otherwise, a
+          // nested call would trigger the fake event handlers of any call higher
+          // in the stack.
+          fakeNode.removeEventListener(evtType, callCallback, false); // We check for window.hasOwnProperty('event') to prevent the
+          // window.event assignment in both IE <= 10 as they throw an error
+          // "Member not found" in strict mode, and in Firefox which does not
+          // support window.event.
+
+          if (typeof window.event !== 'undefined' && window.hasOwnProperty('event')) {
+            window.event = windowEvent;
+          }
+
+          func.apply(context, funcArgs);
+          didError = false;
+        } // Create a global error event handler. We use this to capture the value
+        // that was thrown. It's possible that this error handler will fire more
+        // than once; for example, if non-React code also calls `dispatchEvent`
+        // and a handler for that event throws. We should be resilient to most of
+        // those cases. Even if our error event handler fires more than once, the
+        // last error event is always used. If the callback actually does error,
+        // we know that the last error event is the correct one, because it's not
+        // possible for anything else to have happened in between our callback
+        // erroring and the code that follows the `dispatchEvent` call below. If
+        // the callback doesn't error, but the error event was fired, we know to
+        // ignore it because `didError` will be false, as described above.
+
+
+        var error; // Use this to track whether the error event is ever called.
+
+        var didSetError = false;
+        var isCrossOriginError = false;
+
+        function handleWindowError(event) {
+          error = event.error;
+          didSetError = true;
+
+          if (error === null && event.colno === 0 && event.lineno === 0) {
+            isCrossOriginError = true;
+          }
+
+          if (event.defaultPrevented) {
+            // Some other error handler has prevented default.
+            // Browsers silence the error report if this happens.
+            // We'll remember this to later decide whether to log it or not.
+            if (error != null && typeof error === 'object') {
+              try {
+                error._suppressLogging = true;
+              } catch (inner) {// Ignore.
+              }
+            }
+          }
+        } // Create a fake event type.
+
+
+        var evtType = "react-" + (name ? name : 'invokeguardedcallback'); // Attach our event handlers
+
+        window.addEventListener('error', handleWindowError);
+        fakeNode.addEventListener(evtType, callCallback, false); // Synchronously dispatch our fake event. If the user-provided function
+        // errors, it will trigger our global error handler.
+
+        evt.initEvent(evtType, false, false);
+        fakeNode.dispatchEvent(evt);
+
+        if (windowEventDescriptor) {
+          Object.defineProperty(window, 'event', windowEventDescriptor);
+        }
+
+        if (didError) {
+          if (!didSetError) {
+            // The callback errored, but the error event never fired.
+            error = new Error('An error was thrown inside one of your components, but React ' + "doesn't know what it was. This is likely due to browser " + 'flakiness. React does its best to preserve the "Pause on ' + 'exceptions" behavior of the DevTools, which requires some ' + "DEV-mode only tricks. It's possible that these don't work in " + 'your browser. Try triggering the error in production mode, ' + 'or switching to a modern browser. If you suspect that this is ' + 'actually an issue with React, please file an issue.');
+          } else if (isCrossOriginError) {
+            error = new Error("A cross-origin error was thrown. React doesn't have access to " + 'the actual error object in development. ' + 'See https://fb.me/react-crossorigin-error for more information.');
+          }
+
+          this.onError(error);
+        } // Remove our event listeners
+
+
+        window.removeEventListener('error', handleWindowError);
+      };
+
+      invokeGuardedCallbackImpl = invokeGuardedCallbackDev;
+    }
+  }
+
+  var invokeGuardedCallbackImpl$1 = invokeGuardedCallbackImpl;
+
+  var hasError = false;
+  var caughtError = null; // Used by event system to capture/rethrow the first error.
+
+  var hasRethrowError = false;
+  var rethrowError = null;
+  var reporter = {
+    onError: function (error) {
+      hasError = true;
+      caughtError = error;
+    }
+  };
+  /**
+   * Call a function while guarding against errors that happens within it.
+   * Returns an error if it throws, otherwise null.
+   *
+   * In production, this is implemented using a try-catch. The reason we don't
+   * use a try-catch directly is so that we can swap out a different
+   * implementation in DEV mode.
+   *
+   * @param {String} name of the guard to use for logging or debugging
+   * @param {Function} func The function to invoke
+   * @param {*} context The context to use when calling the function
+   * @param {...*} args Arguments for function
+   */
+
+  function invokeGuardedCallback(name, func, context, a, b, c, d, e, f) {
+    hasError = false;
+    caughtError = null;
+    invokeGuardedCallbackImpl$1.apply(reporter, arguments);
+  }
+  /**
+   * Same as invokeGuardedCallback, but instead of returning an error, it stores
+   * it in a global so it can be rethrown by `rethrowCaughtError` later.
+   * TODO: See if caughtError and rethrowError can be unified.
+   *
+   * @param {String} name of the guard to use for logging or debugging
+   * @param {Function} func The function to invoke
+   * @param {*} context The context to use when calling the function
+   * @param {...*} args Arguments for function
+   */
+
+  function invokeGuardedCallbackAndCatchFirstError(name, func, context, a, b, c, d, e, f) {
+    invokeGuardedCallback.apply(this, arguments);
+
+    if (hasError) {
+      var error = clearCaughtError();
+
+      if (!hasRethrowError) {
+        hasRethrowError = true;
+        rethrowError = error;
+      }
+    }
+  }
+  /**
+   * During execution of guarded functions we will capture the first error which
+   * we will rethrow to be handled by the top level error handler.
+   */
+
+  function rethrowCaughtError() {
+    if (hasRethrowError) {
+      var error = rethrowError;
+      hasRethrowError = false;
+      rethrowError = null;
+      throw error;
+    }
+  }
+  function hasCaughtError() {
+    return hasError;
+  }
+  function clearCaughtError() {
+    if (hasError) {
+      var error = caughtError;
+      hasError = false;
+      caughtError = null;
+      return error;
+    } else {
+      {
+        {
+          throw Error( "clearCaughtError was called but no error was captured. This error is likely caused by a bug in React. Please file an issue." );
+        }
+      }
+    }
+  }
+
+  var getFiberCurrentPropsFromNode = null;
+  var getInstanceFromNode = null;
+  var getNodeFromInstance = null;
+  function setComponentTree(getFiberCurrentPropsFromNodeImpl, getInstanceFromNodeImpl, getNodeFromInstanceImpl) {
+    getFiberCurrentPropsFromNode = getFiberCurrentPropsFromNodeImpl;
+    getInstanceFromNode = getInstanceFromNodeImpl;
+    getNodeFromInstance = getNodeFromInstanceImpl;
+
+    {
+      if (!getNodeFromInstance || !getInstanceFromNode) {
+        error('EventPluginUtils.setComponentTree(...): Injected ' + 'module is missing getNodeFromInstance or getInstanceFromNode.');
+      }
+    }
+  }
+  var validateEventDispatches;
+
+  {
+    validateEventDispatches = function (event) {
+      var dispatchListeners = event._dispatchListeners;
+      var dispatchInstances = event._dispatchInstances;
+      var listenersIsArr = Array.isArray(dispatchListeners);
+      var listenersLen = listenersIsArr ? dispatchListeners.length : dispatchListeners ? 1 : 0;
+      var instancesIsArr = Array.isArray(dispatchInstances);
+      var instancesLen = instancesIsArr ? dispatchInstances.length : dispatchInstances ? 1 : 0;
+
+      if (instancesIsArr !== listenersIsArr || instancesLen !== listenersLen) {
+        error('EventPluginUtils: Invalid `event`.');
+      }
+    };
+  }
+  /**
+   * Dispatch the event to the listener.
+   * @param {SyntheticEvent} event SyntheticEvent to handle
+   * @param {function} listener Application-level callback
+   * @param {*} inst Internal component instance
+   */
+
+
+  function executeDispatch(event, listener, inst) {
+    var type = event.type || 'unknown-event';
+    event.currentTarget = getNodeFromInstance(inst);
+    invokeGuardedCallbackAndCatchFirstError(type, listener, undefined, event);
+    event.currentTarget = null;
+  }
+  /**
+   * Standard/simple iteration through an event's collected dispatches.
+   */
+
+  function executeDispatchesInOrder(event) {
+    var dispatchListeners = event._dispatchListeners;
+    var dispatchInstances = event._dispatchInstances;
+
+    {
+      validateEventDispatches(event);
+    }
+
+    if (Array.isArray(dispatchListeners)) {
+      for (var i = 0; i < dispatchListeners.length; i++) {
+        if (event.isPropagationStopped()) {
+          break;
+        } // Listeners and Instances are two parallel arrays that are always in sync.
+
+
+        executeDispatch(event, dispatchListeners[i], dispatchInstances[i]);
+      }
+    } else if (dispatchListeners) {
+      executeDispatch(event, dispatchListeners, dispatchInstances);
+    }
+
+    event._dispatchListeners = null;
+    event._dispatchInstances = null;
+  }
+
+  var FunctionComponent = 0;
+  var ClassComponent = 1;
+  var IndeterminateComponent = 2; // Before we know whether it is function or class
+
+  var HostRoot = 3; // Root of a host tree. Could be nested inside another node.
+
+  var HostPortal = 4; // A subtree. Could be an entry point to a different renderer.
+
+  var HostComponent = 5;
+  var HostText = 6;
+  var Fragment = 7;
+  var Mode = 8;
+  var ContextConsumer = 9;
+  var ContextProvider = 10;
+  var ForwardRef = 11;
+  var Profiler = 12;
+  var SuspenseComponent = 13;
+  var MemoComponent = 14;
+  var SimpleMemoComponent = 15;
+  var LazyComponent = 16;
+  var IncompleteClassComponent = 17;
+  var DehydratedFragment = 18;
+  var SuspenseListComponent = 19;
+  var FundamentalComponent = 20;
+  var ScopeComponent = 21;
+  var Block = 22;
+
+  /**
+   * Injectable ordering of event plugins.
+   */
+  var eventPluginOrder = null;
+  /**
+   * Injectable mapping from names to event plugin modules.
+   */
+
+  var namesToPlugins = {};
+  /**
+   * Recomputes the plugin list using the injected plugins and plugin ordering.
+   *
+   * @private
+   */
+
+  function recomputePluginOrdering() {
+    if (!eventPluginOrder) {
+      // Wait until an `eventPluginOrder` is injected.
+      return;
+    }
+
+    for (var pluginName in namesToPlugins) {
+      var pluginModule = namesToPlugins[pluginName];
+      var pluginIndex = eventPluginOrder.indexOf(pluginName);
+
+      if (!(pluginIndex > -1)) {
+        {
+          throw Error( "EventPluginRegistry: Cannot inject event plugins that do not exist in the plugin ordering, `" + pluginName + "`." );
+        }
+      }
+
+      if (plugins[pluginIndex]) {
+        continue;
+      }
+
+      if (!pluginModule.extractEvents) {
+        {
+          throw Error( "EventPluginRegistry: Event plugins must implement an `extractEvents` method, but `" + pluginName + "` does not." );
+        }
+      }
+
+      plugins[pluginIndex] = pluginModule;
+      var publishedEvents = pluginModule.eventTypes;
+
+      for (var eventName in publishedEvents) {
+        if (!publishEventForPlugin(publishedEvents[eventName], pluginModule, eventName)) {
+          {
+            throw Error( "EventPluginRegistry: Failed to publish event `" + eventName + "` for plugin `" + pluginName + "`." );
+          }
+        }
+      }
+    }
+  }
+  /**
+   * Publishes an event so that it can be dispatched by the supplied plugin.
+   *
+   * @param {object} dispatchConfig Dispatch configuration for the event.
+   * @param {object} PluginModule Plugin publishing the event.
+   * @return {boolean} True if the event was successfully published.
+   * @private
+   */
+
+
+  function publishEventForPlugin(dispatchConfig, pluginModule, eventName) {
+    if (!!eventNameDispatchConfigs.hasOwnProperty(eventName)) {
+      {
+        throw Error( "EventPluginRegistry: More than one plugin attempted to publish the same event name, `" + eventName + "`." );
+      }
+    }
+
+    eventNameDispatchConfigs[eventName] = dispatchConfig;
+    var phasedRegistrationNames = dispatchConfig.phasedRegistrationNames;
+
+    if (phasedRegistrationNames) {
+      for (var phaseName in phasedRegistrationNames) {
+        if (phasedRegistrationNames.hasOwnProperty(phaseName)) {
+          var phasedRegistrationName = phasedRegistrationNames[phaseName];
+          publishRegistrationName(phasedRegistrationName, pluginModule, eventName);
+        }
+      }
+
+      return true;
+    } else if (dispatchConfig.registrationName) {
+      publishRegistrationName(dispatchConfig.registrationName, pluginModule, eventName);
+      return true;
+    }
+
+    return false;
+  }
+  /**
+   * Publishes a registration name that is used to identify dispatched events.
+   *
+   * @param {string} registrationName Registration name to add.
+   * @param {object} PluginModule Plugin publishing the event.
+   * @private
+   */
+
+
+  function publishRegistrationName(registrationName, pluginModule, eventName) {
+    if (!!registrationNameModules[registrationName]) {
+      {
+        throw Error( "EventPluginRegistry: More than one plugin attempted to publish the same registration name, `" + registrationName + "`." );
+      }
+    }
+
+    registrationNameModules[registrationName] = pluginModule;
+    registrationNameDependencies[registrationName] = pluginModule.eventTypes[eventName].dependencies;
+
+    {
+      var lowerCasedName = registrationName.toLowerCase();
+      possibleRegistrationNames[lowerCasedName] = registrationName;
+
+      if (registrationName === 'onDoubleClick') {
+        possibleRegistrationNames.ondblclick = registrationName;
+      }
+    }
+  }
+  /**
+   * Registers plugins so that they can extract and dispatch events.
+   */
+
+  /**
+   * Ordered list of injected plugins.
+   */
+
+
+  var plugins = [];
+  /**
+   * Mapping from event name to dispatch config
+   */
+
+  var eventNameDispatchConfigs = {};
+  /**
+   * Mapping from registration name to plugin module
+   */
+
+  var registrationNameModules = {};
+  /**
+   * Mapping from registration name to event name
+   */
+
+  var registrationNameDependencies = {};
+  /**
+   * Mapping from lowercase registration names to the properly cased version,
+   * used to warn in the case of missing event handlers. Available
+   * only in true.
+   * @type {Object}
+   */
+
+  var possibleRegistrationNames =  {} ; // Trust the developer to only use possibleRegistrationNames in true
+
+  /**
+   * Injects an ordering of plugins (by plugin name). This allows the ordering
+   * to be decoupled from injection of the actual plugins so that ordering is
+   * always deterministic regardless of packaging, on-the-fly injection, etc.
+   *
+   * @param {array} InjectedEventPluginOrder
+   * @internal
+   */
+
+  function injectEventPluginOrder(injectedEventPluginOrder) {
+    if (!!eventPluginOrder) {
+      {
+        throw Error( "EventPluginRegistry: Cannot inject event plugin ordering more than once. You are likely trying to load more than one copy of React." );
+      }
+    } // Clone the ordering so it cannot be dynamically mutated.
+
+
+    eventPluginOrder = Array.prototype.slice.call(injectedEventPluginOrder);
+    recomputePluginOrdering();
+  }
+  /**
+   * Injects plugins to be used by plugin event system. The plugin names must be
+   * in the ordering injected by `injectEventPluginOrder`.
+   *
+   * Plugins can be injected as part of page initialization or on-the-fly.
+   *
+   * @param {object} injectedNamesToPlugins Map from names to plugin modules.
+   * @internal
+   */
+
+  function injectEventPluginsByName(injectedNamesToPlugins) {
+    var isOrderingDirty = false;
+
+    for (var pluginName in injectedNamesToPlugins) {
+      if (!injectedNamesToPlugins.hasOwnProperty(pluginName)) {
+        continue;
+      }
+
+      var pluginModule = injectedNamesToPlugins[pluginName];
+
+      if (!namesToPlugins.hasOwnProperty(pluginName) || namesToPlugins[pluginName] !== pluginModule) {
+        if (!!namesToPlugins[pluginName]) {
+          {
+            throw Error( "EventPluginRegistry: Cannot inject two different event plugins using the same name, `" + pluginName + "`." );
+          }
+        }
+
+        namesToPlugins[pluginName] = pluginModule;
+        isOrderingDirty = true;
+      }
+    }
+
+    if (isOrderingDirty) {
+      recomputePluginOrdering();
+    }
+  }
+
+  var canUseDOM = !!(typeof window !== 'undefined' && typeof window.document !== 'undefined' && typeof window.document.createElement !== 'undefined');
+
+  var ReactInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;
+  var _assign = ReactInternals.assign;
+
+  var PLUGIN_EVENT_SYSTEM = 1;
+  var IS_REPLAYED = 1 << 5;
+  var IS_FIRST_ANCESTOR = 1 << 6;
+
+  var restoreImpl = null;
+  var restoreTarget = null;
+  var restoreQueue = null;
+
+  function restoreStateOfTarget(target) {
+    // We perform this translation at the end of the event loop so that we
+    // always receive the correct fiber here
+    var internalInstance = getInstanceFromNode(target);
+
+    if (!internalInstance) {
+      // Unmounted
+      return;
+    }
+
+    if (!(typeof restoreImpl === 'function')) {
+      {
+        throw Error( "setRestoreImplementation() needs to be called to handle a target for controlled events. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+
+    var stateNode = internalInstance.stateNode; // Guard against Fiber being unmounted.
+
+    if (stateNode) {
+      var _props = getFiberCurrentPropsFromNode(stateNode);
+
+      restoreImpl(internalInstance.stateNode, internalInstance.type, _props);
+    }
+  }
+
+  function setRestoreImplementation(impl) {
+    restoreImpl = impl;
+  }
+  function enqueueStateRestore(target) {
+    if (restoreTarget) {
+      if (restoreQueue) {
+        restoreQueue.push(target);
+      } else {
+        restoreQueue = [target];
+      }
+    } else {
+      restoreTarget = target;
+    }
+  }
+  function needsStateRestore() {
+    return restoreTarget !== null || restoreQueue !== null;
+  }
+  function restoreStateIfNeeded() {
+    if (!restoreTarget) {
+      return;
+    }
+
+    var target = restoreTarget;
+    var queuedTargets = restoreQueue;
+    restoreTarget = null;
+    restoreQueue = null;
+    restoreStateOfTarget(target);
+
+    if (queuedTargets) {
+      for (var i = 0; i < queuedTargets.length; i++) {
+        restoreStateOfTarget(queuedTargets[i]);
+      }
+    }
+  }
+
+  var enableProfilerTimer = true; // Trace which interactions trigger each commit.
+
+  var enableDeprecatedFlareAPI = false; // Experimental Host Component support.
+
+  var enableFundamentalAPI = false; // Experimental Scope support.
+  var warnAboutStringRefs = false;
+
+  // the renderer. Such as when we're dispatching events or if third party
+  // libraries need to call batchedUpdates. Eventually, this API will go away when
+  // everything is batched by default. We'll then have a similar API to opt-out of
+  // scheduled work and instead do synchronous work.
+  // Defaults
+
+  var batchedUpdatesImpl = function (fn, bookkeeping) {
+    return fn(bookkeeping);
+  };
+
+  var discreteUpdatesImpl = function (fn, a, b, c, d) {
+    return fn(a, b, c, d);
+  };
+
+  var flushDiscreteUpdatesImpl = function () {};
+
+  var batchedEventUpdatesImpl = batchedUpdatesImpl;
+  var isInsideEventHandler = false;
+  var isBatchingEventUpdates = false;
+
+  function finishEventHandler() {
+    // Here we wait until all updates have propagated, which is important
+    // when using controlled components within layers:
+    // https://github.com/facebook/react/issues/1698
+    // Then we restore state of any controlled component.
+    var controlledComponentsHavePendingUpdates = needsStateRestore();
+
+    if (controlledComponentsHavePendingUpdates) {
+      // If a controlled event was fired, we may need to restore the state of
+      // the DOM node back to the controlled value. This is necessary when React
+      // bails out of the update without touching the DOM.
+      flushDiscreteUpdatesImpl();
+      restoreStateIfNeeded();
+    }
+  }
+
+  function batchedUpdates(fn, bookkeeping) {
+    if (isInsideEventHandler) {
+      // If we are currently inside another batch, we need to wait until it
+      // fully completes before restoring state.
+      return fn(bookkeeping);
+    }
+
+    isInsideEventHandler = true;
+
+    try {
+      return batchedUpdatesImpl(fn, bookkeeping);
+    } finally {
+      isInsideEventHandler = false;
+      finishEventHandler();
+    }
+  }
+  function batchedEventUpdates(fn, a, b) {
+    if (isBatchingEventUpdates) {
+      // If we are currently inside another batch, we need to wait until it
+      // fully completes before restoring state.
+      return fn(a, b);
+    }
+
+    isBatchingEventUpdates = true;
+
+    try {
+      return batchedEventUpdatesImpl(fn, a, b);
+    } finally {
+      isBatchingEventUpdates = false;
+      finishEventHandler();
+    }
+  } // This is for the React Flare event system
+  function discreteUpdates(fn, a, b, c, d) {
+    var prevIsInsideEventHandler = isInsideEventHandler;
+    isInsideEventHandler = true;
+
+    try {
+      return discreteUpdatesImpl(fn, a, b, c, d);
+    } finally {
+      isInsideEventHandler = prevIsInsideEventHandler;
+
+      if (!isInsideEventHandler) {
+        finishEventHandler();
+      }
+    }
+  }
+  function flushDiscreteUpdatesIfNeeded(timeStamp) {
+    // event.timeStamp isn't overly reliable due to inconsistencies in
+    // how different browsers have historically provided the time stamp.
+    // Some browsers provide high-resolution time stamps for all events,
+    // some provide low-resolution time stamps for all events. FF < 52
+    // even mixes both time stamps together. Some browsers even report
+    // negative time stamps or time stamps that are 0 (iOS9) in some cases.
+    // Given we are only comparing two time stamps with equality (!==),
+    // we are safe from the resolution differences. If the time stamp is 0
+    // we bail-out of preventing the flush, which can affect semantics,
+    // such as if an earlier flush removes or adds event listeners that
+    // are fired in the subsequent flush. However, this is the same
+    // behaviour as we had before this change, so the risks are low.
+    if (!isInsideEventHandler && (!enableDeprecatedFlareAPI  )) {
+      flushDiscreteUpdatesImpl();
+    }
+  }
+  function setBatchingImplementation(_batchedUpdatesImpl, _discreteUpdatesImpl, _flushDiscreteUpdatesImpl, _batchedEventUpdatesImpl) {
+    batchedUpdatesImpl = _batchedUpdatesImpl;
+    discreteUpdatesImpl = _discreteUpdatesImpl;
+    flushDiscreteUpdatesImpl = _flushDiscreteUpdatesImpl;
+    batchedEventUpdatesImpl = _batchedEventUpdatesImpl;
+  }
+
+  var DiscreteEvent = 0;
+  var UserBlockingEvent = 1;
+  var ContinuousEvent = 2;
+
+  var ReactInternals$1 = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;
+  var _ReactInternals$Sched = ReactInternals$1.Scheduler,
+      unstable_cancelCallback = _ReactInternals$Sched.unstable_cancelCallback,
+      unstable_now = _ReactInternals$Sched.unstable_now,
+      unstable_scheduleCallback = _ReactInternals$Sched.unstable_scheduleCallback,
+      unstable_shouldYield = _ReactInternals$Sched.unstable_shouldYield,
+      unstable_requestPaint = _ReactInternals$Sched.unstable_requestPaint,
+      unstable_getFirstCallbackNode = _ReactInternals$Sched.unstable_getFirstCallbackNode,
+      unstable_runWithPriority = _ReactInternals$Sched.unstable_runWithPriority,
+      unstable_next = _ReactInternals$Sched.unstable_next,
+      unstable_continueExecution = _ReactInternals$Sched.unstable_continueExecution,
+      unstable_pauseExecution = _ReactInternals$Sched.unstable_pauseExecution,
+      unstable_getCurrentPriorityLevel = _ReactInternals$Sched.unstable_getCurrentPriorityLevel,
+      unstable_ImmediatePriority = _ReactInternals$Sched.unstable_ImmediatePriority,
+      unstable_UserBlockingPriority = _ReactInternals$Sched.unstable_UserBlockingPriority,
+      unstable_NormalPriority = _ReactInternals$Sched.unstable_NormalPriority,
+      unstable_LowPriority = _ReactInternals$Sched.unstable_LowPriority,
+      unstable_IdlePriority = _ReactInternals$Sched.unstable_IdlePriority,
+      unstable_forceFrameRate = _ReactInternals$Sched.unstable_forceFrameRate,
+      unstable_flushAllWithoutAsserting = _ReactInternals$Sched.unstable_flushAllWithoutAsserting;
+
+  // A reserved attribute.
+  // It is handled by React separately and shouldn't be written to the DOM.
+  var RESERVED = 0; // A simple string attribute.
+  // Attributes that aren't in the whitelist are presumed to have this type.
+
+  var STRING = 1; // A string attribute that accepts booleans in React. In HTML, these are called
+  // "enumerated" attributes with "true" and "false" as possible values.
+  // When true, it should be set to a "true" string.
+  // When false, it should be set to a "false" string.
+
+  var BOOLEANISH_STRING = 2; // A real boolean attribute.
+  // When true, it should be present (set either to an empty string or its name).
+  // When false, it should be omitted.
+
+  var BOOLEAN = 3; // An attribute that can be used as a flag as well as with a value.
+  // When true, it should be present (set either to an empty string or its name).
+  // When false, it should be omitted.
+  // For any other value, should be present with that value.
+
+  var OVERLOADED_BOOLEAN = 4; // An attribute that must be numeric or parse as a numeric.
+  // When falsy, it should be removed.
+
+  var NUMERIC = 5; // An attribute that must be positive numeric or parse as a positive numeric.
+  // When falsy, it should be removed.
+
+  var POSITIVE_NUMERIC = 6;
+
+  /* eslint-disable max-len */
+  var ATTRIBUTE_NAME_START_CHAR = ":A-Z_a-z\\u00C0-\\u00D6\\u00D8-\\u00F6\\u00F8-\\u02FF\\u0370-\\u037D\\u037F-\\u1FFF\\u200C-\\u200D\\u2070-\\u218F\\u2C00-\\u2FEF\\u3001-\\uD7FF\\uF900-\\uFDCF\\uFDF0-\\uFFFD";
+  /* eslint-enable max-len */
+
+  var ATTRIBUTE_NAME_CHAR = ATTRIBUTE_NAME_START_CHAR + "\\-.0-9\\u00B7\\u0300-\\u036F\\u203F-\\u2040";
+  var ROOT_ATTRIBUTE_NAME = 'data-reactroot';
+  var VALID_ATTRIBUTE_NAME_REGEX = new RegExp('^[' + ATTRIBUTE_NAME_START_CHAR + '][' + ATTRIBUTE_NAME_CHAR + ']*$');
+  var hasOwnProperty = Object.prototype.hasOwnProperty;
+  var illegalAttributeNameCache = {};
+  var validatedAttributeNameCache = {};
+  function isAttributeNameSafe(attributeName) {
+    if (hasOwnProperty.call(validatedAttributeNameCache, attributeName)) {
+      return true;
+    }
+
+    if (hasOwnProperty.call(illegalAttributeNameCache, attributeName)) {
+      return false;
+    }
+
+    if (VALID_ATTRIBUTE_NAME_REGEX.test(attributeName)) {
+      validatedAttributeNameCache[attributeName] = true;
+      return true;
+    }
+
+    illegalAttributeNameCache[attributeName] = true;
+
+    {
+      error('Invalid attribute name: `%s`', attributeName);
+    }
+
+    return false;
+  }
+  function shouldIgnoreAttribute(name, propertyInfo, isCustomComponentTag) {
+    if (propertyInfo !== null) {
+      return propertyInfo.type === RESERVED;
+    }
+
+    if (isCustomComponentTag) {
+      return false;
+    }
+
+    if (name.length > 2 && (name[0] === 'o' || name[0] === 'O') && (name[1] === 'n' || name[1] === 'N')) {
+      return true;
+    }
+
+    return false;
+  }
+  function shouldRemoveAttributeWithWarning(name, value, propertyInfo, isCustomComponentTag) {
+    if (propertyInfo !== null && propertyInfo.type === RESERVED) {
+      return false;
+    }
+
+    switch (typeof value) {
+      case 'function': // $FlowIssue symbol is perfectly valid here
+
+      case 'symbol':
+        // eslint-disable-line
+        return true;
+
+      case 'boolean':
+        {
+          if (isCustomComponentTag) {
+            return false;
+          }
+
+          if (propertyInfo !== null) {
+            return !propertyInfo.acceptsBooleans;
+          } else {
+            var prefix = name.toLowerCase().slice(0, 5);
+            return prefix !== 'data-' && prefix !== 'aria-';
+          }
+        }
+
+      default:
+        return false;
+    }
+  }
+  function shouldRemoveAttribute(name, value, propertyInfo, isCustomComponentTag) {
+    if (value === null || typeof value === 'undefined') {
+      return true;
+    }
+
+    if (shouldRemoveAttributeWithWarning(name, value, propertyInfo, isCustomComponentTag)) {
+      return true;
+    }
+
+    if (isCustomComponentTag) {
+      return false;
+    }
+
+    if (propertyInfo !== null) {
+      switch (propertyInfo.type) {
+        case BOOLEAN:
+          return !value;
+
+        case OVERLOADED_BOOLEAN:
+          return value === false;
+
+        case NUMERIC:
+          return isNaN(value);
+
+        case POSITIVE_NUMERIC:
+          return isNaN(value) || value < 1;
+      }
+    }
+
+    return false;
+  }
+  function getPropertyInfo(name) {
+    return properties.hasOwnProperty(name) ? properties[name] : null;
+  }
+
+  function PropertyInfoRecord(name, type, mustUseProperty, attributeName, attributeNamespace, sanitizeURL) {
+    this.acceptsBooleans = type === BOOLEANISH_STRING || type === BOOLEAN || type === OVERLOADED_BOOLEAN;
+    this.attributeName = attributeName;
+    this.attributeNamespace = attributeNamespace;
+    this.mustUseProperty = mustUseProperty;
+    this.propertyName = name;
+    this.type = type;
+    this.sanitizeURL = sanitizeURL;
+  } // When adding attributes to this list, be sure to also add them to
+  // the `possibleStandardNames` module to ensure casing and incorrect
+  // name warnings.
+
+
+  var properties = {}; // These props are reserved by React. They shouldn't be written to the DOM.
+
+  var reservedProps = ['children', 'dangerouslySetInnerHTML', // TODO: This prevents the assignment of defaultValue to regular
+  // elements (not just inputs). Now that ReactDOMInput assigns to the
+  // defaultValue property -- do we need this?
+  'defaultValue', 'defaultChecked', 'innerHTML', 'suppressContentEditableWarning', 'suppressHydrationWarning', 'style'];
+
+  reservedProps.forEach(function (name) {
+    properties[name] = new PropertyInfoRecord(name, RESERVED, false, // mustUseProperty
+    name, // attributeName
+    null, // attributeNamespace
+    false);
+  }); // A few React string attributes have a different name.
+  // This is a mapping from React prop names to the attribute names.
+
+  [['acceptCharset', 'accept-charset'], ['className', 'class'], ['htmlFor', 'for'], ['httpEquiv', 'http-equiv']].forEach(function (_ref) {
+    var name = _ref[0],
+        attributeName = _ref[1];
+    properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+    attributeName, // attributeName
+    null, // attributeNamespace
+    false);
+  }); // These are "enumerated" HTML attributes that accept "true" and "false".
+  // In React, we let users pass `true` and `false` even though technically
+  // these aren't boolean attributes (they are coerced to strings).
+
+  ['contentEditable', 'draggable', 'spellCheck', 'value'].forEach(function (name) {
+    properties[name] = new PropertyInfoRecord(name, BOOLEANISH_STRING, false, // mustUseProperty
+    name.toLowerCase(), // attributeName
+    null, // attributeNamespace
+    false);
+  }); // These are "enumerated" SVG attributes that accept "true" and "false".
+  // In React, we let users pass `true` and `false` even though technically
+  // these aren't boolean attributes (they are coerced to strings).
+  // Since these are SVG attributes, their attribute names are case-sensitive.
+
+  ['autoReverse', 'externalResourcesRequired', 'focusable', 'preserveAlpha'].forEach(function (name) {
+    properties[name] = new PropertyInfoRecord(name, BOOLEANISH_STRING, false, // mustUseProperty
+    name, // attributeName
+    null, // attributeNamespace
+    false);
+  }); // These are HTML boolean attributes.
+
+  ['allowFullScreen', 'async', // Note: there is a special case that prevents it from being written to the DOM
+  // on the client side because the browsers are inconsistent. Instead we call focus().
+  'autoFocus', 'autoPlay', 'controls', 'default', 'defer', 'disabled', 'disablePictureInPicture', 'formNoValidate', 'hidden', 'loop', 'noModule', 'noValidate', 'open', 'playsInline', 'readOnly', 'required', 'reversed', 'scoped', 'seamless', // Microdata
+  'itemScope'].forEach(function (name) {
+    properties[name] = new PropertyInfoRecord(name, BOOLEAN, false, // mustUseProperty
+    name.toLowerCase(), // attributeName
+    null, // attributeNamespace
+    false);
+  }); // These are the few React props that we set as DOM properties
+  // rather than attributes. These are all booleans.
+
+  ['checked', // Note: `option.selected` is not updated if `select.multiple` is
+  // disabled with `removeAttribute`. We have special logic for handling this.
+  'multiple', 'muted', 'selected' // NOTE: if you add a camelCased prop to this list,
+  // you'll need to set attributeName to name.toLowerCase()
+  // instead in the assignment below.
+  ].forEach(function (name) {
+    properties[name] = new PropertyInfoRecord(name, BOOLEAN, true, // mustUseProperty
+    name, // attributeName
+    null, // attributeNamespace
+    false);
+  }); // These are HTML attributes that are "overloaded booleans": they behave like
+  // booleans, but can also accept a string value.
+
+  ['capture', 'download' // NOTE: if you add a camelCased prop to this list,
+  // you'll need to set attributeName to name.toLowerCase()
+  // instead in the assignment below.
+  ].forEach(function (name) {
+    properties[name] = new PropertyInfoRecord(name, OVERLOADED_BOOLEAN, false, // mustUseProperty
+    name, // attributeName
+    null, // attributeNamespace
+    false);
+  }); // These are HTML attributes that must be positive numbers.
+
+  ['cols', 'rows', 'size', 'span' // NOTE: if you add a camelCased prop to this list,
+  // you'll need to set attributeName to name.toLowerCase()
+  // instead in the assignment below.
+  ].forEach(function (name) {
+    properties[name] = new PropertyInfoRecord(name, POSITIVE_NUMERIC, false, // mustUseProperty
+    name, // attributeName
+    null, // attributeNamespace
+    false);
+  }); // These are HTML attributes that must be numbers.
+
+  ['rowSpan', 'start'].forEach(function (name) {
+    properties[name] = new PropertyInfoRecord(name, NUMERIC, false, // mustUseProperty
+    name.toLowerCase(), // attributeName
+    null, // attributeNamespace
+    false);
+  });
+  var CAMELIZE = /[\-\:]([a-z])/g;
+
+  var capitalize = function (token) {
+    return token[1].toUpperCase();
+  }; // This is a list of all SVG attributes that need special casing, namespacing,
+  // or boolean value assignment. Regular attributes that just accept strings
+  // and have the same names are omitted, just like in the HTML whitelist.
+  // Some of these attributes can be hard to find. This list was created by
+  // scraping the MDN documentation.
+
+
+  ['accent-height', 'alignment-baseline', 'arabic-form', 'baseline-shift', 'cap-height', 'clip-path', 'clip-rule', 'color-interpolation', 'color-interpolation-filters', 'color-profile', 'color-rendering', 'dominant-baseline', 'enable-background', 'fill-opacity', 'fill-rule', 'flood-color', 'flood-opacity', 'font-family', 'font-size', 'font-size-adjust', 'font-stretch', 'font-style', 'font-variant', 'font-weight', 'glyph-name', 'glyph-orientation-horizontal', 'glyph-orientation-vertical', 'horiz-adv-x', 'horiz-origin-x', 'image-rendering', 'letter-spacing', 'lighting-color', 'marker-end', 'marker-mid', 'marker-start', 'overline-position', 'overline-thickness', 'paint-order', 'panose-1', 'pointer-events', 'rendering-intent', 'shape-rendering', 'stop-color', 'stop-opacity', 'strikethrough-position', 'strikethrough-thickness', 'stroke-dasharray', 'stroke-dashoffset', 'stroke-linecap', 'stroke-linejoin', 'stroke-miterlimit', 'stroke-opacity', 'stroke-width', 'text-anchor', 'text-decoration', 'text-rendering', 'underline-position', 'underline-thickness', 'unicode-bidi', 'unicode-range', 'units-per-em', 'v-alphabetic', 'v-hanging', 'v-ideographic', 'v-mathematical', 'vector-effect', 'vert-adv-y', 'vert-origin-x', 'vert-origin-y', 'word-spacing', 'writing-mode', 'xmlns:xlink', 'x-height' // NOTE: if you add a camelCased prop to this list,
+  // you'll need to set attributeName to name.toLowerCase()
+  // instead in the assignment below.
+  ].forEach(function (attributeName) {
+    var name = attributeName.replace(CAMELIZE, capitalize);
+    properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+    attributeName, null, // attributeNamespace
+    false);
+  }); // String SVG attributes with the xlink namespace.
+
+  ['xlink:actuate', 'xlink:arcrole', 'xlink:role', 'xlink:show', 'xlink:title', 'xlink:type' // NOTE: if you add a camelCased prop to this list,
+  // you'll need to set attributeName to name.toLowerCase()
+  // instead in the assignment below.
+  ].forEach(function (attributeName) {
+    var name = attributeName.replace(CAMELIZE, capitalize);
+    properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+    attributeName, 'http://www.w3.org/1999/xlink', false);
+  }); // String SVG attributes with the xml namespace.
+
+  ['xml:base', 'xml:lang', 'xml:space' // NOTE: if you add a camelCased prop to this list,
+  // you'll need to set attributeName to name.toLowerCase()
+  // instead in the assignment below.
+  ].forEach(function (attributeName) {
+    var name = attributeName.replace(CAMELIZE, capitalize);
+    properties[name] = new PropertyInfoRecord(name, STRING, false, // mustUseProperty
+    attributeName, 'http://www.w3.org/XML/1998/namespace', false);
+  }); // These attribute exists both in HTML and SVG.
+  // The attribute name is case-sensitive in SVG so we can't just use
+  // the React name like we do for attributes that exist only in HTML.
+
+  ['tabIndex', 'crossOrigin'].forEach(function (attributeName) {
+    properties[attributeName] = new PropertyInfoRecord(attributeName, STRING, false, // mustUseProperty
+    attributeName.toLowerCase(), // attributeName
+    null, // attributeNamespace
+    false);
+  }); // These attributes accept URLs. These must not allow javascript: URLS.
+  // These will also need to accept Trusted Types object in the future.
+
+  var xlinkHref = 'xlinkHref';
+  properties[xlinkHref] = new PropertyInfoRecord('xlinkHref', STRING, false, // mustUseProperty
+  'xlink:href', 'http://www.w3.org/1999/xlink', true);
+  ['src', 'href', 'action', 'formAction'].forEach(function (attributeName) {
+    properties[attributeName] = new PropertyInfoRecord(attributeName, STRING, false, // mustUseProperty
+    attributeName.toLowerCase(), // attributeName
+    null, // attributeNamespace
+    true);
+  });
+
+  var ReactDebugCurrentFrame = null;
+
+  {
+    ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+  } // A javascript: URL can contain leading C0 control or \u0020 SPACE,
+  // and any newline or tab are filtered out as if they're not part of the URL.
+  // https://url.spec.whatwg.org/#url-parsing
+  // Tab or newline are defined as \r\n\t:
+  // https://infra.spec.whatwg.org/#ascii-tab-or-newline
+  // A C0 control is a code point in the range \u0000 NULL to \u001F
+  // INFORMATION SEPARATOR ONE, inclusive:
+  // https://infra.spec.whatwg.org/#c0-control-or-space
+
+  /* eslint-disable max-len */
+
+
+  var isJavaScriptProtocol = /^[\u0000-\u001F ]*j[\r\n\t]*a[\r\n\t]*v[\r\n\t]*a[\r\n\t]*s[\r\n\t]*c[\r\n\t]*r[\r\n\t]*i[\r\n\t]*p[\r\n\t]*t[\r\n\t]*\:/i;
+  var didWarn = false;
+
+  function sanitizeURL(url) {
+    {
+      if (!didWarn && isJavaScriptProtocol.test(url)) {
+        didWarn = true;
+
+        error('A future version of React will block javascript: URLs as a security precaution. ' + 'Use event handlers instead if you can. If you need to generate unsafe HTML try ' + 'using dangerouslySetInnerHTML instead. React was passed %s.', JSON.stringify(url));
+      }
+    }
+  }
+
+  /**
+   * Get the value for a property on a node. Only used in DEV for SSR validation.
+   * The "expected" argument is used as a hint of what the expected value is.
+   * Some properties have multiple equivalent values.
+   */
+  function getValueForProperty(node, name, expected, propertyInfo) {
+    {
+      if (propertyInfo.mustUseProperty) {
+        var propertyName = propertyInfo.propertyName;
+        return node[propertyName];
+      } else {
+        if ( propertyInfo.sanitizeURL) {
+          // If we haven't fully disabled javascript: URLs, and if
+          // the hydration is successful of a javascript: URL, we
+          // still want to warn on the client.
+          sanitizeURL('' + expected);
+        }
+
+        var attributeName = propertyInfo.attributeName;
+        var stringValue = null;
+
+        if (propertyInfo.type === OVERLOADED_BOOLEAN) {
+          if (node.hasAttribute(attributeName)) {
+            var value = node.getAttribute(attributeName);
+
+            if (value === '') {
+              return true;
+            }
+
+            if (shouldRemoveAttribute(name, expected, propertyInfo, false)) {
+              return value;
+            }
+
+            if (value === '' + expected) {
+              return expected;
+            }
+
+            return value;
+          }
+        } else if (node.hasAttribute(attributeName)) {
+          if (shouldRemoveAttribute(name, expected, propertyInfo, false)) {
+            // We had an attribute but shouldn't have had one, so read it
+            // for the error message.
+            return node.getAttribute(attributeName);
+          }
+
+          if (propertyInfo.type === BOOLEAN) {
+            // If this was a boolean, it doesn't matter what the value is
+            // the fact that we have it is the same as the expected.
+            return expected;
+          } // Even if this property uses a namespace we use getAttribute
+          // because we assume its namespaced name is the same as our config.
+          // To use getAttributeNS we need the local name which we don't have
+          // in our config atm.
+
+
+          stringValue = node.getAttribute(attributeName);
+        }
+
+        if (shouldRemoveAttribute(name, expected, propertyInfo, false)) {
+          return stringValue === null ? expected : stringValue;
+        } else if (stringValue === '' + expected) {
+          return expected;
+        } else {
+          return stringValue;
+        }
+      }
+    }
+  }
+  /**
+   * Get the value for a attribute on a node. Only used in DEV for SSR validation.
+   * The third argument is used as a hint of what the expected value is. Some
+   * attributes have multiple equivalent values.
+   */
+
+  function getValueForAttribute(node, name, expected) {
+    {
+      if (!isAttributeNameSafe(name)) {
+        return;
+      }
+
+      if (!node.hasAttribute(name)) {
+        return expected === undefined ? undefined : null;
+      }
+
+      var value = node.getAttribute(name);
+
+      if (value === '' + expected) {
+        return expected;
+      }
+
+      return value;
+    }
+  }
+  /**
+   * Sets the value for a property on a node.
+   *
+   * @param {DOMElement} node
+   * @param {string} name
+   * @param {*} value
+   */
+
+  function setValueForProperty(node, name, value, isCustomComponentTag) {
+    var propertyInfo = getPropertyInfo(name);
+
+    if (shouldIgnoreAttribute(name, propertyInfo, isCustomComponentTag)) {
+      return;
+    }
+
+    if (shouldRemoveAttribute(name, value, propertyInfo, isCustomComponentTag)) {
+      value = null;
+    } // If the prop isn't in the special list, treat it as a simple attribute.
+
+
+    if (isCustomComponentTag || propertyInfo === null) {
+      if (isAttributeNameSafe(name)) {
+        var _attributeName = name;
+
+        if (value === null) {
+          node.removeAttribute(_attributeName);
+        } else {
+          node.setAttribute(_attributeName,  '' + value);
+        }
+      }
+
+      return;
+    }
+
+    var mustUseProperty = propertyInfo.mustUseProperty;
+
+    if (mustUseProperty) {
+      var propertyName = propertyInfo.propertyName;
+
+      if (value === null) {
+        var type = propertyInfo.type;
+        node[propertyName] = type === BOOLEAN ? false : '';
+      } else {
+        // Contrary to `setAttribute`, object properties are properly
+        // `toString`ed by IE8/9.
+        node[propertyName] = value;
+      }
+
+      return;
+    } // The rest are treated as attributes with special cases.
+
+
+    var attributeName = propertyInfo.attributeName,
+        attributeNamespace = propertyInfo.attributeNamespace;
+
+    if (value === null) {
+      node.removeAttribute(attributeName);
+    } else {
+      var _type = propertyInfo.type;
+      var attributeValue;
+
+      if (_type === BOOLEAN || _type === OVERLOADED_BOOLEAN && value === true) {
+        // If attribute type is boolean, we know for sure it won't be an execution sink
+        // and we won't require Trusted Type here.
+        attributeValue = '';
+      } else {
+        // `setAttribute` with objects becomes only `[object]` in IE8/9,
+        // ('' + value) makes it output the correct toString()-value.
+        {
+          attributeValue = '' + value;
+        }
+
+        if (propertyInfo.sanitizeURL) {
+          sanitizeURL(attributeValue.toString());
+        }
+      }
+
+      if (attributeNamespace) {
+        node.setAttributeNS(attributeNamespace, attributeName, attributeValue);
+      } else {
+        node.setAttribute(attributeName, attributeValue);
+      }
+    }
+  }
+
+  var BEFORE_SLASH_RE = /^(.*)[\\\/]/;
+  function describeComponentFrame (name, source, ownerName) {
+    var sourceInfo = '';
+
+    if (source) {
+      var path = source.fileName;
+      var fileName = path.replace(BEFORE_SLASH_RE, '');
+
+      {
+        // In DEV, include code for a common special case:
+        // prefer "folder/index.js" instead of just "index.js".
+        if (/^index\./.test(fileName)) {
+          var match = path.match(BEFORE_SLASH_RE);
+
+          if (match) {
+            var pathBeforeSlash = match[1];
+
+            if (pathBeforeSlash) {
+              var folderName = pathBeforeSlash.replace(BEFORE_SLASH_RE, '');
+              fileName = folderName + '/' + fileName;
+            }
+          }
+        }
+      }
+
+      sourceInfo = ' (at ' + fileName + ':' + source.lineNumber + ')';
+    } else if (ownerName) {
+      sourceInfo = ' (created by ' + ownerName + ')';
+    }
+
+    return '\n    in ' + (name || 'Unknown') + sourceInfo;
+  }
+
+  // The Symbol used to tag the ReactElement-like types. If there is no native Symbol
+  // nor polyfill, then a plain number is used for performance.
+  var hasSymbol = typeof Symbol === 'function' && Symbol.for;
+  var REACT_ELEMENT_TYPE = hasSymbol ? Symbol.for('react.element') : 0xeac7;
+  var REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca;
+  var REACT_FRAGMENT_TYPE = hasSymbol ? Symbol.for('react.fragment') : 0xeacb;
+  var REACT_STRICT_MODE_TYPE = hasSymbol ? Symbol.for('react.strict_mode') : 0xeacc;
+  var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for('react.profiler') : 0xead2;
+  var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for('react.provider') : 0xeacd;
+  var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for('react.context') : 0xeace; // TODO: We don't use AsyncMode or ConcurrentMode anymore. They were temporary
+  var REACT_CONCURRENT_MODE_TYPE = hasSymbol ? Symbol.for('react.concurrent_mode') : 0xeacf;
+  var REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for('react.forward_ref') : 0xead0;
+  var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for('react.suspense') : 0xead1;
+  var REACT_SUSPENSE_LIST_TYPE = hasSymbol ? Symbol.for('react.suspense_list') : 0xead8;
+  var REACT_MEMO_TYPE = hasSymbol ? Symbol.for('react.memo') : 0xead3;
+  var REACT_LAZY_TYPE = hasSymbol ? Symbol.for('react.lazy') : 0xead4;
+  var REACT_BLOCK_TYPE = hasSymbol ? Symbol.for('react.block') : 0xead9;
+  var MAYBE_ITERATOR_SYMBOL = typeof Symbol === 'function' && Symbol.iterator;
+  var FAUX_ITERATOR_SYMBOL = '@@iterator';
+  function getIteratorFn(maybeIterable) {
+    if (maybeIterable === null || typeof maybeIterable !== 'object') {
+      return null;
+    }
+
+    var maybeIterator = MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL];
+
+    if (typeof maybeIterator === 'function') {
+      return maybeIterator;
+    }
+
+    return null;
+  }
+
+  var Uninitialized = -1;
+  var Pending = 0;
+  var Resolved = 1;
+  var Rejected = 2;
+  function refineResolvedLazyComponent(lazyComponent) {
+    return lazyComponent._status === Resolved ? lazyComponent._result : null;
+  }
+  function initializeLazyComponentType(lazyComponent) {
+    if (lazyComponent._status === Uninitialized) {
+      lazyComponent._status = Pending;
+      var ctor = lazyComponent._ctor;
+      var thenable = ctor();
+      lazyComponent._result = thenable;
+      thenable.then(function (moduleObject) {
+        if (lazyComponent._status === Pending) {
+          var defaultExport = moduleObject.default;
+
+          {
+            if (defaultExport === undefined) {
+              error('lazy: Expected the result of a dynamic import() call. ' + 'Instead received: %s\n\nYour code should look like: \n  ' + "const MyComponent = lazy(() => import('./MyComponent'))", moduleObject);
+            }
+          }
+
+          lazyComponent._status = Resolved;
+          lazyComponent._result = defaultExport;
+        }
+      }, function (error) {
+        if (lazyComponent._status === Pending) {
+          lazyComponent._status = Rejected;
+          lazyComponent._result = error;
+        }
+      });
+    }
+  }
+
+  function getWrappedName(outerType, innerType, wrapperName) {
+    var functionName = innerType.displayName || innerType.name || '';
+    return outerType.displayName || (functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName);
+  }
+
+  function getComponentName(type) {
+    if (type == null) {
+      // Host root, text node or just invalid type.
+      return null;
+    }
+
+    {
+      if (typeof type.tag === 'number') {
+        error('Received an unexpected object in getComponentName(). ' + 'This is likely a bug in React. Please file an issue.');
+      }
+    }
+
+    if (typeof type === 'function') {
+      return type.displayName || type.name || null;
+    }
+
+    if (typeof type === 'string') {
+      return type;
+    }
+
+    switch (type) {
+      case REACT_FRAGMENT_TYPE:
+        return 'Fragment';
+
+      case REACT_PORTAL_TYPE:
+        return 'Portal';
+
+      case REACT_PROFILER_TYPE:
+        return "Profiler";
+
+      case REACT_STRICT_MODE_TYPE:
+        return 'StrictMode';
+
+      case REACT_SUSPENSE_TYPE:
+        return 'Suspense';
+
+      case REACT_SUSPENSE_LIST_TYPE:
+        return 'SuspenseList';
+    }
+
+    if (typeof type === 'object') {
+      switch (type.$$typeof) {
+        case REACT_CONTEXT_TYPE:
+          return 'Context.Consumer';
+
+        case REACT_PROVIDER_TYPE:
+          return 'Context.Provider';
+
+        case REACT_FORWARD_REF_TYPE:
+          return getWrappedName(type, type.render, 'ForwardRef');
+
+        case REACT_MEMO_TYPE:
+          return getComponentName(type.type);
+
+        case REACT_BLOCK_TYPE:
+          return getComponentName(type.render);
+
+        case REACT_LAZY_TYPE:
+          {
+            var thenable = type;
+            var resolvedThenable = refineResolvedLazyComponent(thenable);
+
+            if (resolvedThenable) {
+              return getComponentName(resolvedThenable);
+            }
+
+            break;
+          }
+      }
+    }
+
+    return null;
+  }
+
+  var ReactDebugCurrentFrame$1 = ReactSharedInternals.ReactDebugCurrentFrame;
+
+  function describeFiber(fiber) {
+    switch (fiber.tag) {
+      case HostRoot:
+      case HostPortal:
+      case HostText:
+      case Fragment:
+      case ContextProvider:
+      case ContextConsumer:
+        return '';
+
+      default:
+        var owner = fiber._debugOwner;
+        var source = fiber._debugSource;
+        var name = getComponentName(fiber.type);
+        var ownerName = null;
+
+        if (owner) {
+          ownerName = getComponentName(owner.type);
+        }
+
+        return describeComponentFrame(name, source, ownerName);
+    }
+  }
+
+  function getStackByFiberInDevAndProd(workInProgress) {
+    var info = '';
+    var node = workInProgress;
+
+    do {
+      info += describeFiber(node);
+      node = node.return;
+    } while (node);
+
+    return info;
+  }
+  var current = null;
+  var isRendering = false;
+  function getCurrentFiberOwnerNameInDevOrNull() {
+    {
+      if (current === null) {
+        return null;
+      }
+
+      var owner = current._debugOwner;
+
+      if (owner !== null && typeof owner !== 'undefined') {
+        return getComponentName(owner.type);
+      }
+    }
+
+    return null;
+  }
+  function getCurrentFiberStackInDev() {
+    {
+      if (current === null) {
+        return '';
+      } // Safe because if current fiber exists, we are reconciling,
+      // and it is guaranteed to be the work-in-progress version.
+
+
+      return getStackByFiberInDevAndProd(current);
+    }
+  }
+  function resetCurrentFiber() {
+    {
+      ReactDebugCurrentFrame$1.getCurrentStack = null;
+      current = null;
+      isRendering = false;
+    }
+  }
+  function setCurrentFiber(fiber) {
+    {
+      ReactDebugCurrentFrame$1.getCurrentStack = getCurrentFiberStackInDev;
+      current = fiber;
+      isRendering = false;
+    }
+  }
+  function setIsRendering(rendering) {
+    {
+      isRendering = rendering;
+    }
+  }
+
+  // Flow does not allow string concatenation of most non-string types. To work
+  // around this limitation, we use an opaque type that can only be obtained by
+  // passing the value through getToStringValue first.
+  function toString(value) {
+    return '' + value;
+  }
+  function getToStringValue(value) {
+    switch (typeof value) {
+      case 'boolean':
+      case 'number':
+      case 'object':
+      case 'string':
+      case 'undefined':
+        return value;
+
+      default:
+        // function, symbol are assigned as empty strings
+        return '';
+    }
+  }
+
+  /**
+   * Copyright (c) 2013-present, Facebook, Inc.
+   *
+   * This source code is licensed under the MIT license found in the
+   * LICENSE file in the root directory of this source tree.
+   */
+
+  var ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';
+
+  var ReactPropTypesSecret_1 = ReactPropTypesSecret;
+
+  var printWarning$1 = function() {};
+
+  {
+    var ReactPropTypesSecret$1 = ReactPropTypesSecret_1;
+    var loggedTypeFailures = {};
+    var has = Function.call.bind(Object.prototype.hasOwnProperty);
+
+    printWarning$1 = function(text) {
+      var message = 'Warning: ' + text;
+      if (typeof console !== 'undefined') {
+        console.error(message);
+      }
+      try {
+        // --- Welcome to debugging React ---
+        // This error was thrown as a convenience so that you can use this stack
+        // to find the callsite that caused this warning to fire.
+        throw new Error(message);
+      } catch (x) {}
+    };
+  }
+
+  /**
+   * Assert that the values match with the type specs.
+   * Error messages are memorized and will only be shown once.
+   *
+   * @param {object} typeSpecs Map of name to a ReactPropType
+   * @param {object} values Runtime values that need to be type-checked
+   * @param {string} location e.g. "prop", "context", "child context"
+   * @param {string} componentName Name of the component for error messages.
+   * @param {?Function} getStack Returns the component stack.
+   * @private
+   */
+  function checkPropTypes(typeSpecs, values, location, componentName, getStack) {
+    {
+      for (var typeSpecName in typeSpecs) {
+        if (has(typeSpecs, typeSpecName)) {
+          var error;
+          // Prop type validation may throw. In case they do, we don't want to
+          // fail the render phase where it didn't fail before. So we log it.
+          // After these have been cleaned up, we'll let them throw.
+          try {
+            // This is intentionally an invariant that gets caught. It's the same
+            // behavior as without this statement except with a better message.
+            if (typeof typeSpecs[typeSpecName] !== 'function') {
+              var err = Error(
+                (componentName || 'React class') + ': ' + location + ' type `' + typeSpecName + '` is invalid; ' +
+                'it must be a function, usually from the `prop-types` package, but received `' + typeof typeSpecs[typeSpecName] + '`.'
+              );
+              err.name = 'Invariant Violation';
+              throw err;
+            }
+            error = typeSpecs[typeSpecName](values, typeSpecName, componentName, location, null, ReactPropTypesSecret$1);
+          } catch (ex) {
+            error = ex;
+          }
+          if (error && !(error instanceof Error)) {
+            printWarning$1(
+              (componentName || 'React class') + ': type specification of ' +
+              location + ' `' + typeSpecName + '` is invalid; the type checker ' +
+              'function must return `null` or an `Error` but returned a ' + typeof error + '. ' +
+              'You may have forgotten to pass an argument to the type checker ' +
+              'creator (arrayOf, instanceOf, objectOf, oneOf, oneOfType, and ' +
+              'shape all require an argument).'
+            );
+          }
+          if (error instanceof Error && !(error.message in loggedTypeFailures)) {
+            // Only monitor this failure once because there tends to be a lot of the
+            // same error.
+            loggedTypeFailures[error.message] = true;
+
+            var stack = getStack ? getStack() : '';
+
+            printWarning$1(
+              'Failed ' + location + ' type: ' + error.message + (stack != null ? stack : '')
+            );
+          }
+        }
+      }
+    }
+  }
+
+  /**
+   * Resets warning cache when testing.
+   *
+   * @private
+   */
+  checkPropTypes.resetWarningCache = function() {
+    {
+      loggedTypeFailures = {};
+    }
+  };
+
+  var checkPropTypes_1 = checkPropTypes;
+
+  var ReactDebugCurrentFrame$2 = null;
+  var ReactControlledValuePropTypes = {
+    checkPropTypes: null
+  };
+
+  {
+    ReactDebugCurrentFrame$2 = ReactSharedInternals.ReactDebugCurrentFrame;
+    var hasReadOnlyValue = {
+      button: true,
+      checkbox: true,
+      image: true,
+      hidden: true,
+      radio: true,
+      reset: true,
+      submit: true
+    };
+    var propTypes = {
+      value: function (props, propName, componentName) {
+        if (hasReadOnlyValue[props.type] || props.onChange || props.readOnly || props.disabled || props[propName] == null || enableDeprecatedFlareAPI ) {
+          return null;
+        }
+
+        return new Error('You provided a `value` prop to a form field without an ' + '`onChange` handler. This will render a read-only field. If ' + 'the field should be mutable use `defaultValue`. Otherwise, ' + 'set either `onChange` or `readOnly`.');
+      },
+      checked: function (props, propName, componentName) {
+        if (props.onChange || props.readOnly || props.disabled || props[propName] == null || enableDeprecatedFlareAPI ) {
+          return null;
+        }
+
+        return new Error('You provided a `checked` prop to a form field without an ' + '`onChange` handler. This will render a read-only field. If ' + 'the field should be mutable use `defaultChecked`. Otherwise, ' + 'set either `onChange` or `readOnly`.');
+      }
+    };
+    /**
+     * Provide a linked `value` attribute for controlled forms. You should not use
+     * this outside of the ReactDOM controlled form components.
+     */
+
+    ReactControlledValuePropTypes.checkPropTypes = function (tagName, props) {
+      checkPropTypes_1(propTypes, props, 'prop', tagName, ReactDebugCurrentFrame$2.getStackAddendum);
+    };
+  }
+
+  function isCheckable(elem) {
+    var type = elem.type;
+    var nodeName = elem.nodeName;
+    return nodeName && nodeName.toLowerCase() === 'input' && (type === 'checkbox' || type === 'radio');
+  }
+
+  function getTracker(node) {
+    return node._valueTracker;
+  }
+
+  function detachTracker(node) {
+    node._valueTracker = null;
+  }
+
+  function getValueFromNode(node) {
+    var value = '';
+
+    if (!node) {
+      return value;
+    }
+
+    if (isCheckable(node)) {
+      value = node.checked ? 'true' : 'false';
+    } else {
+      value = node.value;
+    }
+
+    return value;
+  }
+
+  function trackValueOnNode(node) {
+    var valueField = isCheckable(node) ? 'checked' : 'value';
+    var descriptor = Object.getOwnPropertyDescriptor(node.constructor.prototype, valueField);
+    var currentValue = '' + node[valueField]; // if someone has already defined a value or Safari, then bail
+    // and don't track value will cause over reporting of changes,
+    // but it's better then a hard failure
+    // (needed for certain tests that spyOn input values and Safari)
+
+    if (node.hasOwnProperty(valueField) || typeof descriptor === 'undefined' || typeof descriptor.get !== 'function' || typeof descriptor.set !== 'function') {
+      return;
+    }
+
+    var get = descriptor.get,
+        set = descriptor.set;
+    Object.defineProperty(node, valueField, {
+      configurable: true,
+      get: function () {
+        return get.call(this);
+      },
+      set: function (value) {
+        currentValue = '' + value;
+        set.call(this, value);
+      }
+    }); // We could've passed this the first time
+    // but it triggers a bug in IE11 and Edge 14/15.
+    // Calling defineProperty() again should be equivalent.
+    // https://github.com/facebook/react/issues/11768
+
+    Object.defineProperty(node, valueField, {
+      enumerable: descriptor.enumerable
+    });
+    var tracker = {
+      getValue: function () {
+        return currentValue;
+      },
+      setValue: function (value) {
+        currentValue = '' + value;
+      },
+      stopTracking: function () {
+        detachTracker(node);
+        delete node[valueField];
+      }
+    };
+    return tracker;
+  }
+
+  function track(node) {
+    if (getTracker(node)) {
+      return;
+    } // TODO: Once it's just Fiber we can move this to node._wrapperState
+
+
+    node._valueTracker = trackValueOnNode(node);
+  }
+  function updateValueIfChanged(node) {
+    if (!node) {
+      return false;
+    }
+
+    var tracker = getTracker(node); // if there is no tracker at this point it's unlikely
+    // that trying again will succeed
+
+    if (!tracker) {
+      return true;
+    }
+
+    var lastValue = tracker.getValue();
+    var nextValue = getValueFromNode(node);
+
+    if (nextValue !== lastValue) {
+      tracker.setValue(nextValue);
+      return true;
+    }
+
+    return false;
+  }
+
+  var didWarnValueDefaultValue = false;
+  var didWarnCheckedDefaultChecked = false;
+  var didWarnControlledToUncontrolled = false;
+  var didWarnUncontrolledToControlled = false;
+
+  function isControlled(props) {
+    var usesChecked = props.type === 'checkbox' || props.type === 'radio';
+    return usesChecked ? props.checked != null : props.value != null;
+  }
+  /**
+   * Implements an <input> host component that allows setting these optional
+   * props: `checked`, `value`, `defaultChecked`, and `defaultValue`.
+   *
+   * If `checked` or `value` are not supplied (or null/undefined), user actions
+   * that affect the checked state or value will trigger updates to the element.
+   *
+   * If they are supplied (and not null/undefined), the rendered element will not
+   * trigger updates to the element. Instead, the props must change in order for
+   * the rendered element to be updated.
+   *
+   * The rendered element will be initialized as unchecked (or `defaultChecked`)
+   * with an empty value (or `defaultValue`).
+   *
+   * See http://www.w3.org/TR/2012/WD-html5-20121025/the-input-element.html
+   */
+
+
+  function getHostProps(element, props) {
+    var node = element;
+    var checked = props.checked;
+
+    var hostProps = _assign({}, props, {
+      defaultChecked: undefined,
+      defaultValue: undefined,
+      value: undefined,
+      checked: checked != null ? checked : node._wrapperState.initialChecked
+    });
+
+    return hostProps;
+  }
+  function initWrapperState(element, props) {
+    {
+      ReactControlledValuePropTypes.checkPropTypes('input', props);
+
+      if (props.checked !== undefined && props.defaultChecked !== undefined && !didWarnCheckedDefaultChecked) {
+        error('%s contains an input of type %s with both checked and defaultChecked props. ' + 'Input elements must be either controlled or uncontrolled ' + '(specify either the checked prop, or the defaultChecked prop, but not ' + 'both). Decide between using a controlled or uncontrolled input ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components', getCurrentFiberOwnerNameInDevOrNull() || 'A component', props.type);
+
+        didWarnCheckedDefaultChecked = true;
+      }
+
+      if (props.value !== undefined && props.defaultValue !== undefined && !didWarnValueDefaultValue) {
+        error('%s contains an input of type %s with both value and defaultValue props. ' + 'Input elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled input ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components', getCurrentFiberOwnerNameInDevOrNull() || 'A component', props.type);
+
+        didWarnValueDefaultValue = true;
+      }
+    }
+
+    var node = element;
+    var defaultValue = props.defaultValue == null ? '' : props.defaultValue;
+    node._wrapperState = {
+      initialChecked: props.checked != null ? props.checked : props.defaultChecked,
+      initialValue: getToStringValue(props.value != null ? props.value : defaultValue),
+      controlled: isControlled(props)
+    };
+  }
+  function updateChecked(element, props) {
+    var node = element;
+    var checked = props.checked;
+
+    if (checked != null) {
+      setValueForProperty(node, 'checked', checked, false);
+    }
+  }
+  function updateWrapper(element, props) {
+    var node = element;
+
+    {
+      var controlled = isControlled(props);
+
+      if (!node._wrapperState.controlled && controlled && !didWarnUncontrolledToControlled) {
+        error('A component is changing an uncontrolled input of type %s to be controlled. ' + 'Input elements should not switch from uncontrolled to controlled (or vice versa). ' + 'Decide between using a controlled or uncontrolled input ' + 'element for the lifetime of the component. More info: https://fb.me/react-controlled-components', props.type);
+
+        didWarnUncontrolledToControlled = true;
+      }
+
+      if (node._wrapperState.controlled && !controlled && !didWarnControlledToUncontrolled) {
+        error('A component is changing a controlled input of type %s to be uncontrolled. ' + 'Input elements should not switch from controlled to uncontrolled (or vice versa). ' + 'Decide between using a controlled or uncontrolled input ' + 'element for the lifetime of the component. More info: https://fb.me/react-controlled-components', props.type);
+
+        didWarnControlledToUncontrolled = true;
+      }
+    }
+
+    updateChecked(element, props);
+    var value = getToStringValue(props.value);
+    var type = props.type;
+
+    if (value != null) {
+      if (type === 'number') {
+        if (value === 0 && node.value === '' || // We explicitly want to coerce to number here if possible.
+        // eslint-disable-next-line
+        node.value != value) {
+          node.value = toString(value);
+        }
+      } else if (node.value !== toString(value)) {
+        node.value = toString(value);
+      }
+    } else if (type === 'submit' || type === 'reset') {
+      // Submit/reset inputs need the attribute removed completely to avoid
+      // blank-text buttons.
+      node.removeAttribute('value');
+      return;
+    }
+
+    {
+      // When syncing the value attribute, the value comes from a cascade of
+      // properties:
+      //  1. The value React property
+      //  2. The defaultValue React property
+      //  3. Otherwise there should be no change
+      if (props.hasOwnProperty('value')) {
+        setDefaultValue(node, props.type, value);
+      } else if (props.hasOwnProperty('defaultValue')) {
+        setDefaultValue(node, props.type, getToStringValue(props.defaultValue));
+      }
+    }
+
+    {
+      // When syncing the checked attribute, it only changes when it needs
+      // to be removed, such as transitioning from a checkbox into a text input
+      if (props.checked == null && props.defaultChecked != null) {
+        node.defaultChecked = !!props.defaultChecked;
+      }
+    }
+  }
+  function postMountWrapper(element, props, isHydrating) {
+    var node = element; // Do not assign value if it is already set. This prevents user text input
+    // from being lost during SSR hydration.
+
+    if (props.hasOwnProperty('value') || props.hasOwnProperty('defaultValue')) {
+      var type = props.type;
+      var isButton = type === 'submit' || type === 'reset'; // Avoid setting value attribute on submit/reset inputs as it overrides the
+      // default value provided by the browser. See: #12872
+
+      if (isButton && (props.value === undefined || props.value === null)) {
+        return;
+      }
+
+      var initialValue = toString(node._wrapperState.initialValue); // Do not assign value if it is already set. This prevents user text input
+      // from being lost during SSR hydration.
+
+      if (!isHydrating) {
+        {
+          // When syncing the value attribute, the value property should use
+          // the wrapperState._initialValue property. This uses:
+          //
+          //   1. The value React property when present
+          //   2. The defaultValue React property when present
+          //   3. An empty string
+          if (initialValue !== node.value) {
+            node.value = initialValue;
+          }
+        }
+      }
+
+      {
+        // Otherwise, the value attribute is synchronized to the property,
+        // so we assign defaultValue to the same thing as the value property
+        // assignment step above.
+        node.defaultValue = initialValue;
+      }
+    } // Normally, we'd just do `node.checked = node.checked` upon initial mount, less this bug
+    // this is needed to work around a chrome bug where setting defaultChecked
+    // will sometimes influence the value of checked (even after detachment).
+    // Reference: https://bugs.chromium.org/p/chromium/issues/detail?id=608416
+    // We need to temporarily unset name to avoid disrupting radio button groups.
+
+
+    var name = node.name;
+
+    if (name !== '') {
+      node.name = '';
+    }
+
+    {
+      // When syncing the checked attribute, both the checked property and
+      // attribute are assigned at the same time using defaultChecked. This uses:
+      //
+      //   1. The checked React property when present
+      //   2. The defaultChecked React property when present
+      //   3. Otherwise, false
+      node.defaultChecked = !node.defaultChecked;
+      node.defaultChecked = !!node._wrapperState.initialChecked;
+    }
+
+    if (name !== '') {
+      node.name = name;
+    }
+  }
+  function restoreControlledState(element, props) {
+    var node = element;
+    updateWrapper(node, props);
+    updateNamedCousins(node, props);
+  }
+
+  function updateNamedCousins(rootNode, props) {
+    var name = props.name;
+
+    if (props.type === 'radio' && name != null) {
+      var queryRoot = rootNode;
+
+      while (queryRoot.parentNode) {
+        queryRoot = queryRoot.parentNode;
+      } // If `rootNode.form` was non-null, then we could try `form.elements`,
+      // but that sometimes behaves strangely in IE8. We could also try using
+      // `form.getElementsByName`, but that will only return direct children
+      // and won't include inputs that use the HTML5 `form=` attribute. Since
+      // the input might not even be in a form. It might not even be in the
+      // document. Let's just use the local `querySelectorAll` to ensure we don't
+      // miss anything.
+
+
+      var group = queryRoot.querySelectorAll('input[name=' + JSON.stringify('' + name) + '][type="radio"]');
+
+      for (var i = 0; i < group.length; i++) {
+        var otherNode = group[i];
+
+        if (otherNode === rootNode || otherNode.form !== rootNode.form) {
+          continue;
+        } // This will throw if radio buttons rendered by different copies of React
+        // and the same name are rendered into the same form (same as #1939).
+        // That's probably okay; we don't support it just as we don't support
+        // mixing React radio buttons with non-React ones.
+
+
+        var otherProps = getFiberCurrentPropsFromNode$1(otherNode);
+
+        if (!otherProps) {
+          {
+            throw Error( "ReactDOMInput: Mixing React and non-React radio inputs with the same `name` is not supported." );
+          }
+        } // We need update the tracked value on the named cousin since the value
+        // was changed but the input saw no event or value set
+
+
+        updateValueIfChanged(otherNode); // If this is a controlled radio button group, forcing the input that
+        // was previously checked to update will cause it to be come re-checked
+        // as appropriate.
+
+        updateWrapper(otherNode, otherProps);
+      }
+    }
+  } // In Chrome, assigning defaultValue to certain input types triggers input validation.
+  // For number inputs, the display value loses trailing decimal points. For email inputs,
+  // Chrome raises "The specified value <x> is not a valid email address".
+  //
+  // Here we check to see if the defaultValue has actually changed, avoiding these problems
+  // when the user is inputting text
+  //
+  // https://github.com/facebook/react/issues/7253
+
+
+  function setDefaultValue(node, type, value) {
+    if ( // Focused number inputs synchronize on blur. See ChangeEventPlugin.js
+    type !== 'number' || node.ownerDocument.activeElement !== node) {
+      if (value == null) {
+        node.defaultValue = toString(node._wrapperState.initialValue);
+      } else if (node.defaultValue !== toString(value)) {
+        node.defaultValue = toString(value);
+      }
+    }
+  }
+
+  var didWarnSelectedSetOnOption = false;
+  var didWarnInvalidChild = false;
+
+  function flattenChildren(children) {
+    var content = ''; // Flatten children. We'll warn if they are invalid
+    // during validateProps() which runs for hydration too.
+    // Note that this would throw on non-element objects.
+    // Elements are stringified (which is normally irrelevant
+    // but matters for <fbt>).
+
+    React.Children.forEach(children, function (child) {
+      if (child == null) {
+        return;
+      }
+
+      content += child; // Note: we don't warn about invalid children here.
+      // Instead, this is done separately below so that
+      // it happens during the hydration codepath too.
+    });
+    return content;
+  }
+  /**
+   * Implements an <option> host component that warns when `selected` is set.
+   */
+
+
+  function validateProps(element, props) {
+    {
+      // This mirrors the codepath above, but runs for hydration too.
+      // Warn about invalid children here so that client and hydration are consistent.
+      // TODO: this seems like it could cause a DEV-only throw for hydration
+      // if children contains a non-element object. We should try to avoid that.
+      if (typeof props.children === 'object' && props.children !== null) {
+        React.Children.forEach(props.children, function (child) {
+          if (child == null) {
+            return;
+          }
+
+          if (typeof child === 'string' || typeof child === 'number') {
+            return;
+          }
+
+          if (typeof child.type !== 'string') {
+            return;
+          }
+
+          if (!didWarnInvalidChild) {
+            didWarnInvalidChild = true;
+
+            error('Only strings and numbers are supported as <option> children.');
+          }
+        });
+      } // TODO: Remove support for `selected` in <option>.
+
+
+      if (props.selected != null && !didWarnSelectedSetOnOption) {
+        error('Use the `defaultValue` or `value` props on <select> instead of ' + 'setting `selected` on <option>.');
+
+        didWarnSelectedSetOnOption = true;
+      }
+    }
+  }
+  function postMountWrapper$1(element, props) {
+    // value="" should make a value attribute (#6219)
+    if (props.value != null) {
+      element.setAttribute('value', toString(getToStringValue(props.value)));
+    }
+  }
+  function getHostProps$1(element, props) {
+    var hostProps = _assign({
+      children: undefined
+    }, props);
+
+    var content = flattenChildren(props.children);
+
+    if (content) {
+      hostProps.children = content;
+    }
+
+    return hostProps;
+  }
+
+  var didWarnValueDefaultValue$1;
+
+  {
+    didWarnValueDefaultValue$1 = false;
+  }
+
+  function getDeclarationErrorAddendum() {
+    var ownerName = getCurrentFiberOwnerNameInDevOrNull();
+
+    if (ownerName) {
+      return '\n\nCheck the render method of `' + ownerName + '`.';
+    }
+
+    return '';
+  }
+
+  var valuePropNames = ['value', 'defaultValue'];
+  /**
+   * Validation function for `value` and `defaultValue`.
+   */
+
+  function checkSelectPropTypes(props) {
+    {
+      ReactControlledValuePropTypes.checkPropTypes('select', props);
+
+      for (var i = 0; i < valuePropNames.length; i++) {
+        var propName = valuePropNames[i];
+
+        if (props[propName] == null) {
+          continue;
+        }
+
+        var isArray = Array.isArray(props[propName]);
+
+        if (props.multiple && !isArray) {
+          error('The `%s` prop supplied to <select> must be an array if ' + '`multiple` is true.%s', propName, getDeclarationErrorAddendum());
+        } else if (!props.multiple && isArray) {
+          error('The `%s` prop supplied to <select> must be a scalar ' + 'value if `multiple` is false.%s', propName, getDeclarationErrorAddendum());
+        }
+      }
+    }
+  }
+
+  function updateOptions(node, multiple, propValue, setDefaultSelected) {
+    var options = node.options;
+
+    if (multiple) {
+      var selectedValues = propValue;
+      var selectedValue = {};
+
+      for (var i = 0; i < selectedValues.length; i++) {
+        // Prefix to avoid chaos with special keys.
+        selectedValue['$' + selectedValues[i]] = true;
+      }
+
+      for (var _i = 0; _i < options.length; _i++) {
+        var selected = selectedValue.hasOwnProperty('$' + options[_i].value);
+
+        if (options[_i].selected !== selected) {
+          options[_i].selected = selected;
+        }
+
+        if (selected && setDefaultSelected) {
+          options[_i].defaultSelected = true;
+        }
+      }
+    } else {
+      // Do not set `select.value` as exact behavior isn't consistent across all
+      // browsers for all cases.
+      var _selectedValue = toString(getToStringValue(propValue));
+
+      var defaultSelected = null;
+
+      for (var _i2 = 0; _i2 < options.length; _i2++) {
+        if (options[_i2].value === _selectedValue) {
+          options[_i2].selected = true;
+
+          if (setDefaultSelected) {
+            options[_i2].defaultSelected = true;
+          }
+
+          return;
+        }
+
+        if (defaultSelected === null && !options[_i2].disabled) {
+          defaultSelected = options[_i2];
+        }
+      }
+
+      if (defaultSelected !== null) {
+        defaultSelected.selected = true;
+      }
+    }
+  }
+  /**
+   * Implements a <select> host component that allows optionally setting the
+   * props `value` and `defaultValue`. If `multiple` is false, the prop must be a
+   * stringable. If `multiple` is true, the prop must be an array of stringables.
+   *
+   * If `value` is not supplied (or null/undefined), user actions that change the
+   * selected option will trigger updates to the rendered options.
+   *
+   * If it is supplied (and not null/undefined), the rendered options will not
+   * update in response to user actions. Instead, the `value` prop must change in
+   * order for the rendered options to update.
+   *
+   * If `defaultValue` is provided, any options with the supplied values will be
+   * selected.
+   */
+
+
+  function getHostProps$2(element, props) {
+    return _assign({}, props, {
+      value: undefined
+    });
+  }
+  function initWrapperState$1(element, props) {
+    var node = element;
+
+    {
+      checkSelectPropTypes(props);
+    }
+
+    node._wrapperState = {
+      wasMultiple: !!props.multiple
+    };
+
+    {
+      if (props.value !== undefined && props.defaultValue !== undefined && !didWarnValueDefaultValue$1) {
+        error('Select elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled select ' + 'element and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components');
+
+        didWarnValueDefaultValue$1 = true;
+      }
+    }
+  }
+  function postMountWrapper$2(element, props) {
+    var node = element;
+    node.multiple = !!props.multiple;
+    var value = props.value;
+
+    if (value != null) {
+      updateOptions(node, !!props.multiple, value, false);
+    } else if (props.defaultValue != null) {
+      updateOptions(node, !!props.multiple, props.defaultValue, true);
+    }
+  }
+  function postUpdateWrapper(element, props) {
+    var node = element;
+    var wasMultiple = node._wrapperState.wasMultiple;
+    node._wrapperState.wasMultiple = !!props.multiple;
+    var value = props.value;
+
+    if (value != null) {
+      updateOptions(node, !!props.multiple, value, false);
+    } else if (wasMultiple !== !!props.multiple) {
+      // For simplicity, reapply `defaultValue` if `multiple` is toggled.
+      if (props.defaultValue != null) {
+        updateOptions(node, !!props.multiple, props.defaultValue, true);
+      } else {
+        // Revert the select back to its default unselected state.
+        updateOptions(node, !!props.multiple, props.multiple ? [] : '', false);
+      }
+    }
+  }
+  function restoreControlledState$1(element, props) {
+    var node = element;
+    var value = props.value;
+
+    if (value != null) {
+      updateOptions(node, !!props.multiple, value, false);
+    }
+  }
+
+  var didWarnValDefaultVal = false;
+
+  /**
+   * Implements a <textarea> host component that allows setting `value`, and
+   * `defaultValue`. This differs from the traditional DOM API because value is
+   * usually set as PCDATA children.
+   *
+   * If `value` is not supplied (or null/undefined), user actions that affect the
+   * value will trigger updates to the element.
+   *
+   * If `value` is supplied (and not null/undefined), the rendered element will
+   * not trigger updates to the element. Instead, the `value` prop must change in
+   * order for the rendered element to be updated.
+   *
+   * The rendered element will be initialized with an empty value, the prop
+   * `defaultValue` if specified, or the children content (deprecated).
+   */
+  function getHostProps$3(element, props) {
+    var node = element;
+
+    if (!(props.dangerouslySetInnerHTML == null)) {
+      {
+        throw Error( "`dangerouslySetInnerHTML` does not make sense on <textarea>." );
+      }
+    } // Always set children to the same thing. In IE9, the selection range will
+    // get reset if `textContent` is mutated.  We could add a check in setTextContent
+    // to only set the value if/when the value differs from the node value (which would
+    // completely solve this IE9 bug), but Sebastian+Sophie seemed to like this
+    // solution. The value can be a boolean or object so that's why it's forced
+    // to be a string.
+
+
+    var hostProps = _assign({}, props, {
+      value: undefined,
+      defaultValue: undefined,
+      children: toString(node._wrapperState.initialValue)
+    });
+
+    return hostProps;
+  }
+  function initWrapperState$2(element, props) {
+    var node = element;
+
+    {
+      ReactControlledValuePropTypes.checkPropTypes('textarea', props);
+
+      if (props.value !== undefined && props.defaultValue !== undefined && !didWarnValDefaultVal) {
+        error('%s contains a textarea with both value and defaultValue props. ' + 'Textarea elements must be either controlled or uncontrolled ' + '(specify either the value prop, or the defaultValue prop, but not ' + 'both). Decide between using a controlled or uncontrolled textarea ' + 'and remove one of these props. More info: ' + 'https://fb.me/react-controlled-components', getCurrentFiberOwnerNameInDevOrNull() || 'A component');
+
+        didWarnValDefaultVal = true;
+      }
+    }
+
+    var initialValue = props.value; // Only bother fetching default value if we're going to use it
+
+    if (initialValue == null) {
+      var children = props.children,
+          defaultValue = props.defaultValue;
+
+      if (children != null) {
+        {
+          error('Use the `defaultValue` or `value` props instead of setting ' + 'children on <textarea>.');
+        }
+
+        {
+          if (!(defaultValue == null)) {
+            {
+              throw Error( "If you supply `defaultValue` on a <textarea>, do not pass children." );
+            }
+          }
+
+          if (Array.isArray(children)) {
+            if (!(children.length <= 1)) {
+              {
+                throw Error( "<textarea> can only have at most one child." );
+              }
+            }
+
+            children = children[0];
+          }
+
+          defaultValue = children;
+        }
+      }
+
+      if (defaultValue == null) {
+        defaultValue = '';
+      }
+
+      initialValue = defaultValue;
+    }
+
+    node._wrapperState = {
+      initialValue: getToStringValue(initialValue)
+    };
+  }
+  function updateWrapper$1(element, props) {
+    var node = element;
+    var value = getToStringValue(props.value);
+    var defaultValue = getToStringValue(props.defaultValue);
+
+    if (value != null) {
+      // Cast `value` to a string to ensure the value is set correctly. While
+      // browsers typically do this as necessary, jsdom doesn't.
+      var newValue = toString(value); // To avoid side effects (such as losing text selection), only set value if changed
+
+      if (newValue !== node.value) {
+        node.value = newValue;
+      }
+
+      if (props.defaultValue == null && node.defaultValue !== newValue) {
+        node.defaultValue = newValue;
+      }
+    }
+
+    if (defaultValue != null) {
+      node.defaultValue = toString(defaultValue);
+    }
+  }
+  function postMountWrapper$3(element, props) {
+    var node = element; // This is in postMount because we need access to the DOM node, which is not
+    // available until after the component has mounted.
+
+    var textContent = node.textContent; // Only set node.value if textContent is equal to the expected
+    // initial value. In IE10/IE11 there is a bug where the placeholder attribute
+    // will populate textContent as well.
+    // https://developer.microsoft.com/microsoft-edge/platform/issues/101525/
+
+    if (textContent === node._wrapperState.initialValue) {
+      if (textContent !== '' && textContent !== null) {
+        node.value = textContent;
+      }
+    }
+  }
+  function restoreControlledState$2(element, props) {
+    // DOM component is still mounted; update
+    updateWrapper$1(element, props);
+  }
+
+  var HTML_NAMESPACE = 'http://www.w3.org/1999/xhtml';
+  var MATH_NAMESPACE = 'http://www.w3.org/1998/Math/MathML';
+  var SVG_NAMESPACE = 'http://www.w3.org/2000/svg';
+  var Namespaces = {
+    html: HTML_NAMESPACE,
+    mathml: MATH_NAMESPACE,
+    svg: SVG_NAMESPACE
+  }; // Assumes there is no parent namespace.
+
+  function getIntrinsicNamespace(type) {
+    switch (type) {
+      case 'svg':
+        return SVG_NAMESPACE;
+
+      case 'math':
+        return MATH_NAMESPACE;
+
+      default:
+        return HTML_NAMESPACE;
+    }
+  }
+  function getChildNamespace(parentNamespace, type) {
+    if (parentNamespace == null || parentNamespace === HTML_NAMESPACE) {
+      // No (or default) parent namespace: potential entry point.
+      return getIntrinsicNamespace(type);
+    }
+
+    if (parentNamespace === SVG_NAMESPACE && type === 'foreignObject') {
+      // We're leaving SVG.
+      return HTML_NAMESPACE;
+    } // By default, pass namespace below.
+
+
+    return parentNamespace;
+  }
+
+  /* globals MSApp */
+
+  /**
+   * Create a function which has 'unsafe' privileges (required by windows8 apps)
+   */
+  var createMicrosoftUnsafeLocalFunction = function (func) {
+    if (typeof MSApp !== 'undefined' && MSApp.execUnsafeLocalFunction) {
+      return function (arg0, arg1, arg2, arg3) {
+        MSApp.execUnsafeLocalFunction(function () {
+          return func(arg0, arg1, arg2, arg3);
+        });
+      };
+    } else {
+      return func;
+    }
+  };
+
+  var reusableSVGContainer;
+  /**
+   * Set the innerHTML property of a node
+   *
+   * @param {DOMElement} node
+   * @param {string} html
+   * @internal
+   */
+
+  var setInnerHTML = createMicrosoftUnsafeLocalFunction(function (node, html) {
+    if (node.namespaceURI === Namespaces.svg) {
+
+      if (!('innerHTML' in node)) {
+        // IE does not have innerHTML for SVG nodes, so instead we inject the
+        // new markup in a temp node and then move the child nodes across into
+        // the target node
+        reusableSVGContainer = reusableSVGContainer || document.createElement('div');
+        reusableSVGContainer.innerHTML = '<svg>' + html.valueOf().toString() + '</svg>';
+        var svgNode = reusableSVGContainer.firstChild;
+
+        while (node.firstChild) {
+          node.removeChild(node.firstChild);
+        }
+
+        while (svgNode.firstChild) {
+          node.appendChild(svgNode.firstChild);
+        }
+
+        return;
+      }
+    }
+
+    node.innerHTML = html;
+  });
+
+  /**
+   * HTML nodeType values that represent the type of the node
+   */
+  var ELEMENT_NODE = 1;
+  var TEXT_NODE = 3;
+  var COMMENT_NODE = 8;
+  var DOCUMENT_NODE = 9;
+  var DOCUMENT_FRAGMENT_NODE = 11;
+
+  /**
+   * Set the textContent property of a node. For text updates, it's faster
+   * to set the `nodeValue` of the Text node directly instead of using
+   * `.textContent` which will remove the existing node and create a new one.
+   *
+   * @param {DOMElement} node
+   * @param {string} text
+   * @internal
+   */
+
+  var setTextContent = function (node, text) {
+    if (text) {
+      var firstChild = node.firstChild;
+
+      if (firstChild && firstChild === node.lastChild && firstChild.nodeType === TEXT_NODE) {
+        firstChild.nodeValue = text;
+        return;
+      }
+    }
+
+    node.textContent = text;
+  };
+
+  // Do not use the below two methods directly!
+  // Instead use constants exported from DOMTopLevelEventTypes in ReactDOM.
+  // (It is the only module that is allowed to access these methods.)
+  function unsafeCastStringToDOMTopLevelType(topLevelType) {
+    return topLevelType;
+  }
+  function unsafeCastDOMTopLevelTypeToString(topLevelType) {
+    return topLevelType;
+  }
+
+  /**
+   * Generate a mapping of standard vendor prefixes using the defined style property and event name.
+   *
+   * @param {string} styleProp
+   * @param {string} eventName
+   * @returns {object}
+   */
+
+  function makePrefixMap(styleProp, eventName) {
+    var prefixes = {};
+    prefixes[styleProp.toLowerCase()] = eventName.toLowerCase();
+    prefixes['Webkit' + styleProp] = 'webkit' + eventName;
+    prefixes['Moz' + styleProp] = 'moz' + eventName;
+    return prefixes;
+  }
+  /**
+   * A list of event names to a configurable list of vendor prefixes.
+   */
+
+
+  var vendorPrefixes = {
+    animationend: makePrefixMap('Animation', 'AnimationEnd'),
+    animationiteration: makePrefixMap('Animation', 'AnimationIteration'),
+    animationstart: makePrefixMap('Animation', 'AnimationStart'),
+    transitionend: makePrefixMap('Transition', 'TransitionEnd')
+  };
+  /**
+   * Event names that have already been detected and prefixed (if applicable).
+   */
+
+  var prefixedEventNames = {};
+  /**
+   * Element to check for prefixes on.
+   */
+
+  var style = {};
+  /**
+   * Bootstrap if a DOM exists.
+   */
+
+  if (canUseDOM) {
+    style = document.createElement('div').style; // On some platforms, in particular some releases of Android 4.x,
+    // the un-prefixed "animation" and "transition" properties are defined on the
+    // style object but the events that fire will still be prefixed, so we need
+    // to check if the un-prefixed events are usable, and if not remove them from the map.
+
+    if (!('AnimationEvent' in window)) {
+      delete vendorPrefixes.animationend.animation;
+      delete vendorPrefixes.animationiteration.animation;
+      delete vendorPrefixes.animationstart.animation;
+    } // Same as above
+
+
+    if (!('TransitionEvent' in window)) {
+      delete vendorPrefixes.transitionend.transition;
+    }
+  }
+  /**
+   * Attempts to determine the correct vendor prefixed event name.
+   *
+   * @param {string} eventName
+   * @returns {string}
+   */
+
+
+  function getVendorPrefixedEventName(eventName) {
+    if (prefixedEventNames[eventName]) {
+      return prefixedEventNames[eventName];
+    } else if (!vendorPrefixes[eventName]) {
+      return eventName;
+    }
+
+    var prefixMap = vendorPrefixes[eventName];
+
+    for (var styleProp in prefixMap) {
+      if (prefixMap.hasOwnProperty(styleProp) && styleProp in style) {
+        return prefixedEventNames[eventName] = prefixMap[styleProp];
+      }
+    }
+
+    return eventName;
+  }
+
+  /**
+   * To identify top level events in ReactDOM, we use constants defined by this
+   * module. This is the only module that uses the unsafe* methods to express
+   * that the constants actually correspond to the browser event names. This lets
+   * us save some bundle size by avoiding a top level type -> event name map.
+   * The rest of ReactDOM code should import top level types from this file.
+   */
+
+  var TOP_ABORT = unsafeCastStringToDOMTopLevelType('abort');
+  var TOP_ANIMATION_END = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationend'));
+  var TOP_ANIMATION_ITERATION = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationiteration'));
+  var TOP_ANIMATION_START = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('animationstart'));
+  var TOP_BLUR = unsafeCastStringToDOMTopLevelType('blur');
+  var TOP_CAN_PLAY = unsafeCastStringToDOMTopLevelType('canplay');
+  var TOP_CAN_PLAY_THROUGH = unsafeCastStringToDOMTopLevelType('canplaythrough');
+  var TOP_CANCEL = unsafeCastStringToDOMTopLevelType('cancel');
+  var TOP_CHANGE = unsafeCastStringToDOMTopLevelType('change');
+  var TOP_CLICK = unsafeCastStringToDOMTopLevelType('click');
+  var TOP_CLOSE = unsafeCastStringToDOMTopLevelType('close');
+  var TOP_COMPOSITION_END = unsafeCastStringToDOMTopLevelType('compositionend');
+  var TOP_COMPOSITION_START = unsafeCastStringToDOMTopLevelType('compositionstart');
+  var TOP_COMPOSITION_UPDATE = unsafeCastStringToDOMTopLevelType('compositionupdate');
+  var TOP_CONTEXT_MENU = unsafeCastStringToDOMTopLevelType('contextmenu');
+  var TOP_COPY = unsafeCastStringToDOMTopLevelType('copy');
+  var TOP_CUT = unsafeCastStringToDOMTopLevelType('cut');
+  var TOP_DOUBLE_CLICK = unsafeCastStringToDOMTopLevelType('dblclick');
+  var TOP_AUX_CLICK = unsafeCastStringToDOMTopLevelType('auxclick');
+  var TOP_DRAG = unsafeCastStringToDOMTopLevelType('drag');
+  var TOP_DRAG_END = unsafeCastStringToDOMTopLevelType('dragend');
+  var TOP_DRAG_ENTER = unsafeCastStringToDOMTopLevelType('dragenter');
+  var TOP_DRAG_EXIT = unsafeCastStringToDOMTopLevelType('dragexit');
+  var TOP_DRAG_LEAVE = unsafeCastStringToDOMTopLevelType('dragleave');
+  var TOP_DRAG_OVER = unsafeCastStringToDOMTopLevelType('dragover');
+  var TOP_DRAG_START = unsafeCastStringToDOMTopLevelType('dragstart');
+  var TOP_DROP = unsafeCastStringToDOMTopLevelType('drop');
+  var TOP_DURATION_CHANGE = unsafeCastStringToDOMTopLevelType('durationchange');
+  var TOP_EMPTIED = unsafeCastStringToDOMTopLevelType('emptied');
+  var TOP_ENCRYPTED = unsafeCastStringToDOMTopLevelType('encrypted');
+  var TOP_ENDED = unsafeCastStringToDOMTopLevelType('ended');
+  var TOP_ERROR = unsafeCastStringToDOMTopLevelType('error');
+  var TOP_FOCUS = unsafeCastStringToDOMTopLevelType('focus');
+  var TOP_GOT_POINTER_CAPTURE = unsafeCastStringToDOMTopLevelType('gotpointercapture');
+  var TOP_INPUT = unsafeCastStringToDOMTopLevelType('input');
+  var TOP_INVALID = unsafeCastStringToDOMTopLevelType('invalid');
+  var TOP_KEY_DOWN = unsafeCastStringToDOMTopLevelType('keydown');
+  var TOP_KEY_PRESS = unsafeCastStringToDOMTopLevelType('keypress');
+  var TOP_KEY_UP = unsafeCastStringToDOMTopLevelType('keyup');
+  var TOP_LOAD = unsafeCastStringToDOMTopLevelType('load');
+  var TOP_LOAD_START = unsafeCastStringToDOMTopLevelType('loadstart');
+  var TOP_LOADED_DATA = unsafeCastStringToDOMTopLevelType('loadeddata');
+  var TOP_LOADED_METADATA = unsafeCastStringToDOMTopLevelType('loadedmetadata');
+  var TOP_LOST_POINTER_CAPTURE = unsafeCastStringToDOMTopLevelType('lostpointercapture');
+  var TOP_MOUSE_DOWN = unsafeCastStringToDOMTopLevelType('mousedown');
+  var TOP_MOUSE_MOVE = unsafeCastStringToDOMTopLevelType('mousemove');
+  var TOP_MOUSE_OUT = unsafeCastStringToDOMTopLevelType('mouseout');
+  var TOP_MOUSE_OVER = unsafeCastStringToDOMTopLevelType('mouseover');
+  var TOP_MOUSE_UP = unsafeCastStringToDOMTopLevelType('mouseup');
+  var TOP_PASTE = unsafeCastStringToDOMTopLevelType('paste');
+  var TOP_PAUSE = unsafeCastStringToDOMTopLevelType('pause');
+  var TOP_PLAY = unsafeCastStringToDOMTopLevelType('play');
+  var TOP_PLAYING = unsafeCastStringToDOMTopLevelType('playing');
+  var TOP_POINTER_CANCEL = unsafeCastStringToDOMTopLevelType('pointercancel');
+  var TOP_POINTER_DOWN = unsafeCastStringToDOMTopLevelType('pointerdown');
+  var TOP_POINTER_MOVE = unsafeCastStringToDOMTopLevelType('pointermove');
+  var TOP_POINTER_OUT = unsafeCastStringToDOMTopLevelType('pointerout');
+  var TOP_POINTER_OVER = unsafeCastStringToDOMTopLevelType('pointerover');
+  var TOP_POINTER_UP = unsafeCastStringToDOMTopLevelType('pointerup');
+  var TOP_PROGRESS = unsafeCastStringToDOMTopLevelType('progress');
+  var TOP_RATE_CHANGE = unsafeCastStringToDOMTopLevelType('ratechange');
+  var TOP_RESET = unsafeCastStringToDOMTopLevelType('reset');
+  var TOP_SCROLL = unsafeCastStringToDOMTopLevelType('scroll');
+  var TOP_SEEKED = unsafeCastStringToDOMTopLevelType('seeked');
+  var TOP_SEEKING = unsafeCastStringToDOMTopLevelType('seeking');
+  var TOP_SELECTION_CHANGE = unsafeCastStringToDOMTopLevelType('selectionchange');
+  var TOP_STALLED = unsafeCastStringToDOMTopLevelType('stalled');
+  var TOP_SUBMIT = unsafeCastStringToDOMTopLevelType('submit');
+  var TOP_SUSPEND = unsafeCastStringToDOMTopLevelType('suspend');
+  var TOP_TEXT_INPUT = unsafeCastStringToDOMTopLevelType('textInput');
+  var TOP_TIME_UPDATE = unsafeCastStringToDOMTopLevelType('timeupdate');
+  var TOP_TOGGLE = unsafeCastStringToDOMTopLevelType('toggle');
+  var TOP_TOUCH_CANCEL = unsafeCastStringToDOMTopLevelType('touchcancel');
+  var TOP_TOUCH_END = unsafeCastStringToDOMTopLevelType('touchend');
+  var TOP_TOUCH_MOVE = unsafeCastStringToDOMTopLevelType('touchmove');
+  var TOP_TOUCH_START = unsafeCastStringToDOMTopLevelType('touchstart');
+  var TOP_TRANSITION_END = unsafeCastStringToDOMTopLevelType(getVendorPrefixedEventName('transitionend'));
+  var TOP_VOLUME_CHANGE = unsafeCastStringToDOMTopLevelType('volumechange');
+  var TOP_WAITING = unsafeCastStringToDOMTopLevelType('waiting');
+  var TOP_WHEEL = unsafeCastStringToDOMTopLevelType('wheel'); // List of events that need to be individually attached to media elements.
+  // Note that events in this list will *not* be listened to at the top level
+  // unless they're explicitly whitelisted in `ReactBrowserEventEmitter.listenTo`.
+
+  var mediaEventTypes = [TOP_ABORT, TOP_CAN_PLAY, TOP_CAN_PLAY_THROUGH, TOP_DURATION_CHANGE, TOP_EMPTIED, TOP_ENCRYPTED, TOP_ENDED, TOP_ERROR, TOP_LOADED_DATA, TOP_LOADED_METADATA, TOP_LOAD_START, TOP_PAUSE, TOP_PLAY, TOP_PLAYING, TOP_PROGRESS, TOP_RATE_CHANGE, TOP_SEEKED, TOP_SEEKING, TOP_STALLED, TOP_SUSPEND, TOP_TIME_UPDATE, TOP_VOLUME_CHANGE, TOP_WAITING];
+  function getRawEventName(topLevelType) {
+    return unsafeCastDOMTopLevelTypeToString(topLevelType);
+  }
+
+  var PossiblyWeakMap = typeof WeakMap === 'function' ? WeakMap : Map; // prettier-ignore
+
+  var elementListenerMap = new PossiblyWeakMap();
+  function getListenerMapForElement(element) {
+    var listenerMap = elementListenerMap.get(element);
+
+    if (listenerMap === undefined) {
+      listenerMap = new Map();
+      elementListenerMap.set(element, listenerMap);
+    }
+
+    return listenerMap;
+  }
+
+  /**
+   * `ReactInstanceMap` maintains a mapping from a public facing stateful
+   * instance (key) and the internal representation (value). This allows public
+   * methods to accept the user facing instance as an argument and map them back
+   * to internal methods.
+   *
+   * Note that this module is currently shared and assumed to be stateless.
+   * If this becomes an actual Map, that will break.
+   */
+  function get(key) {
+    return key._reactInternalFiber;
+  }
+  function has$1(key) {
+    return key._reactInternalFiber !== undefined;
+  }
+  function set(key, value) {
+    key._reactInternalFiber = value;
+  }
+
+  // Don't change these two values. They're used by React Dev Tools.
+  var NoEffect =
+  /*              */
+  0;
+  var PerformedWork =
+  /*         */
+  1; // You can change the rest (and add more).
+
+  var Placement =
+  /*             */
+  2;
+  var Update =
+  /*                */
+  4;
+  var PlacementAndUpdate =
+  /*    */
+  6;
+  var Deletion =
+  /*              */
+  8;
+  var ContentReset =
+  /*          */
+  16;
+  var Callback =
+  /*              */
+  32;
+  var DidCapture =
+  /*            */
+  64;
+  var Ref =
+  /*                   */
+  128;
+  var Snapshot =
+  /*              */
+  256;
+  var Passive =
+  /*               */
+  512;
+  var Hydrating =
+  /*             */
+  1024;
+  var HydratingAndUpdate =
+  /*    */
+  1028; // Passive & Update & Callback & Ref & Snapshot
+
+  var LifecycleEffectMask =
+  /*   */
+  932; // Union of all host effects
+
+  var HostEffectMask =
+  /*        */
+  2047;
+  var Incomplete =
+  /*            */
+  2048;
+  var ShouldCapture =
+  /*         */
+  4096;
+
+  var ReactCurrentOwner = ReactSharedInternals.ReactCurrentOwner;
+  function getNearestMountedFiber(fiber) {
+    var node = fiber;
+    var nearestMounted = fiber;
+
+    if (!fiber.alternate) {
+      // If there is no alternate, this might be a new tree that isn't inserted
+      // yet. If it is, then it will have a pending insertion effect on it.
+      var nextNode = node;
+
+      do {
+        node = nextNode;
+
+        if ((node.effectTag & (Placement | Hydrating)) !== NoEffect) {
+          // This is an insertion or in-progress hydration. The nearest possible
+          // mounted fiber is the parent but we need to continue to figure out
+          // if that one is still mounted.
+          nearestMounted = node.return;
+        }
+
+        nextNode = node.return;
+      } while (nextNode);
+    } else {
+      while (node.return) {
+        node = node.return;
+      }
+    }
+
+    if (node.tag === HostRoot) {
+      // TODO: Check if this was a nested HostRoot when used with
+      // renderContainerIntoSubtree.
+      return nearestMounted;
+    } // If we didn't hit the root, that means that we're in an disconnected tree
+    // that has been unmounted.
+
+
+    return null;
+  }
+  function getSuspenseInstanceFromFiber(fiber) {
+    if (fiber.tag === SuspenseComponent) {
+      var suspenseState = fiber.memoizedState;
+
+      if (suspenseState === null) {
+        var current = fiber.alternate;
+
+        if (current !== null) {
+          suspenseState = current.memoizedState;
+        }
+      }
+
+      if (suspenseState !== null) {
+        return suspenseState.dehydrated;
+      }
+    }
+
+    return null;
+  }
+  function getContainerFromFiber(fiber) {
+    return fiber.tag === HostRoot ? fiber.stateNode.containerInfo : null;
+  }
+  function isFiberMounted(fiber) {
+    return getNearestMountedFiber(fiber) === fiber;
+  }
+  function isMounted(component) {
+    {
+      var owner = ReactCurrentOwner.current;
+
+      if (owner !== null && owner.tag === ClassComponent) {
+        var ownerFiber = owner;
+        var instance = ownerFiber.stateNode;
+
+        if (!instance._warnedAboutRefsInRender) {
+          error('%s is accessing isMounted inside its render() function. ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentName(ownerFiber.type) || 'A component');
+        }
+
+        instance._warnedAboutRefsInRender = true;
+      }
+    }
+
+    var fiber = get(component);
+
+    if (!fiber) {
+      return false;
+    }
+
+    return getNearestMountedFiber(fiber) === fiber;
+  }
+
+  function assertIsMounted(fiber) {
+    if (!(getNearestMountedFiber(fiber) === fiber)) {
+      {
+        throw Error( "Unable to find node on an unmounted component." );
+      }
+    }
+  }
+
+  function findCurrentFiberUsingSlowPath(fiber) {
+    var alternate = fiber.alternate;
+
+    if (!alternate) {
+      // If there is no alternate, then we only need to check if it is mounted.
+      var nearestMounted = getNearestMountedFiber(fiber);
+
+      if (!(nearestMounted !== null)) {
+        {
+          throw Error( "Unable to find node on an unmounted component." );
+        }
+      }
+
+      if (nearestMounted !== fiber) {
+        return null;
+      }
+
+      return fiber;
+    } // If we have two possible branches, we'll walk backwards up to the root
+    // to see what path the root points to. On the way we may hit one of the
+    // special cases and we'll deal with them.
+
+
+    var a = fiber;
+    var b = alternate;
+
+    while (true) {
+      var parentA = a.return;
+
+      if (parentA === null) {
+        // We're at the root.
+        break;
+      }
+
+      var parentB = parentA.alternate;
+
+      if (parentB === null) {
+        // There is no alternate. This is an unusual case. Currently, it only
+        // happens when a Suspense component is hidden. An extra fragment fiber
+        // is inserted in between the Suspense fiber and its children. Skip
+        // over this extra fragment fiber and proceed to the next parent.
+        var nextParent = parentA.return;
+
+        if (nextParent !== null) {
+          a = b = nextParent;
+          continue;
+        } // If there's no parent, we're at the root.
+
+
+        break;
+      } // If both copies of the parent fiber point to the same child, we can
+      // assume that the child is current. This happens when we bailout on low
+      // priority: the bailed out fiber's child reuses the current child.
+
+
+      if (parentA.child === parentB.child) {
+        var child = parentA.child;
+
+        while (child) {
+          if (child === a) {
+            // We've determined that A is the current branch.
+            assertIsMounted(parentA);
+            return fiber;
+          }
+
+          if (child === b) {
+            // We've determined that B is the current branch.
+            assertIsMounted(parentA);
+            return alternate;
+          }
+
+          child = child.sibling;
+        } // We should never have an alternate for any mounting node. So the only
+        // way this could possibly happen is if this was unmounted, if at all.
+
+
+        {
+          {
+            throw Error( "Unable to find node on an unmounted component." );
+          }
+        }
+      }
+
+      if (a.return !== b.return) {
+        // The return pointer of A and the return pointer of B point to different
+        // fibers. We assume that return pointers never criss-cross, so A must
+        // belong to the child set of A.return, and B must belong to the child
+        // set of B.return.
+        a = parentA;
+        b = parentB;
+      } else {
+        // The return pointers point to the same fiber. We'll have to use the
+        // default, slow path: scan the child sets of each parent alternate to see
+        // which child belongs to which set.
+        //
+        // Search parent A's child set
+        var didFindChild = false;
+        var _child = parentA.child;
+
+        while (_child) {
+          if (_child === a) {
+            didFindChild = true;
+            a = parentA;
+            b = parentB;
+            break;
+          }
+
+          if (_child === b) {
+            didFindChild = true;
+            b = parentA;
+            a = parentB;
+            break;
+          }
+
+          _child = _child.sibling;
+        }
+
+        if (!didFindChild) {
+          // Search parent B's child set
+          _child = parentB.child;
+
+          while (_child) {
+            if (_child === a) {
+              didFindChild = true;
+              a = parentB;
+              b = parentA;
+              break;
+            }
+
+            if (_child === b) {
+              didFindChild = true;
+              b = parentB;
+              a = parentA;
+              break;
+            }
+
+            _child = _child.sibling;
+          }
+
+          if (!didFindChild) {
+            {
+              throw Error( "Child was not found in either parent set. This indicates a bug in React related to the return pointer. Please file an issue." );
+            }
+          }
+        }
+      }
+
+      if (!(a.alternate === b)) {
+        {
+          throw Error( "Return fibers should always be each others' alternates. This error is likely caused by a bug in React. Please file an issue." );
+        }
+      }
+    } // If the root is not a host container, we're in a disconnected tree. I.e.
+    // unmounted.
+
+
+    if (!(a.tag === HostRoot)) {
+      {
+        throw Error( "Unable to find node on an unmounted component." );
+      }
+    }
+
+    if (a.stateNode.current === a) {
+      // We've determined that A is the current branch.
+      return fiber;
+    } // Otherwise B has to be current branch.
+
+
+    return alternate;
+  }
+  function findCurrentHostFiber(parent) {
+    var currentParent = findCurrentFiberUsingSlowPath(parent);
+
+    if (!currentParent) {
+      return null;
+    } // Next we'll drill down this component to find the first HostComponent/Text.
+
+
+    var node = currentParent;
+
+    while (true) {
+      if (node.tag === HostComponent || node.tag === HostText) {
+        return node;
+      } else if (node.child) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+
+      if (node === currentParent) {
+        return null;
+      }
+
+      while (!node.sibling) {
+        if (!node.return || node.return === currentParent) {
+          return null;
+        }
+
+        node = node.return;
+      }
+
+      node.sibling.return = node.return;
+      node = node.sibling;
+    } // Flow needs the return null here, but ESLint complains about it.
+    // eslint-disable-next-line no-unreachable
+
+
+    return null;
+  }
+  function findCurrentHostFiberWithNoPortals(parent) {
+    var currentParent = findCurrentFiberUsingSlowPath(parent);
+
+    if (!currentParent) {
+      return null;
+    } // Next we'll drill down this component to find the first HostComponent/Text.
+
+
+    var node = currentParent;
+
+    while (true) {
+      if (node.tag === HostComponent || node.tag === HostText || enableFundamentalAPI ) {
+        return node;
+      } else if (node.child && node.tag !== HostPortal) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+
+      if (node === currentParent) {
+        return null;
+      }
+
+      while (!node.sibling) {
+        if (!node.return || node.return === currentParent) {
+          return null;
+        }
+
+        node = node.return;
+      }
+
+      node.sibling.return = node.return;
+      node = node.sibling;
+    } // Flow needs the return null here, but ESLint complains about it.
+    // eslint-disable-next-line no-unreachable
+
+
+    return null;
+  }
+
+  /**
+   * Accumulates items that must not be null or undefined into the first one. This
+   * is used to conserve memory by avoiding array allocations, and thus sacrifices
+   * API cleanness. Since `current` can be null before being passed in and not
+   * null after this function, make sure to assign it back to `current`:
+   *
+   * `a = accumulateInto(a, b);`
+   *
+   * This API should be sparingly used. Try `accumulate` for something cleaner.
+   *
+   * @return {*|array<*>} An accumulation of items.
+   */
+
+  function accumulateInto(current, next) {
+    if (!(next != null)) {
+      {
+        throw Error( "accumulateInto(...): Accumulated items must not be null or undefined." );
+      }
+    }
+
+    if (current == null) {
+      return next;
+    } // Both are not empty. Warning: Never call x.concat(y) when you are not
+    // certain that x is an Array (x could be a string with concat method).
+
+
+    if (Array.isArray(current)) {
+      if (Array.isArray(next)) {
+        current.push.apply(current, next);
+        return current;
+      }
+
+      current.push(next);
+      return current;
+    }
+
+    if (Array.isArray(next)) {
+      // A bit too dangerous to mutate `next`.
+      return [current].concat(next);
+    }
+
+    return [current, next];
+  }
+
+  /**
+   * @param {array} arr an "accumulation" of items which is either an Array or
+   * a single item. Useful when paired with the `accumulate` module. This is a
+   * simple utility that allows us to reason about a collection of items, but
+   * handling the case when there is exactly one item (and we do not need to
+   * allocate an array).
+   * @param {function} cb Callback invoked with each element or a collection.
+   * @param {?} [scope] Scope used as `this` in a callback.
+   */
+  function forEachAccumulated(arr, cb, scope) {
+    if (Array.isArray(arr)) {
+      arr.forEach(cb, scope);
+    } else if (arr) {
+      cb.call(scope, arr);
+    }
+  }
+
+  /**
+   * Internal queue of events that have accumulated their dispatches and are
+   * waiting to have their dispatches executed.
+   */
+
+  var eventQueue = null;
+  /**
+   * Dispatches an event and releases it back into the pool, unless persistent.
+   *
+   * @param {?object} event Synthetic event to be dispatched.
+   * @private
+   */
+
+  var executeDispatchesAndRelease = function (event) {
+    if (event) {
+      executeDispatchesInOrder(event);
+
+      if (!event.isPersistent()) {
+        event.constructor.release(event);
+      }
+    }
+  };
+
+  var executeDispatchesAndReleaseTopLevel = function (e) {
+    return executeDispatchesAndRelease(e);
+  };
+
+  function runEventsInBatch(events) {
+    if (events !== null) {
+      eventQueue = accumulateInto(eventQueue, events);
+    } // Set `eventQueue` to null before processing it so that we can tell if more
+    // events get enqueued while processing.
+
+
+    var processingEventQueue = eventQueue;
+    eventQueue = null;
+
+    if (!processingEventQueue) {
+      return;
+    }
+
+    forEachAccumulated(processingEventQueue, executeDispatchesAndReleaseTopLevel);
+
+    if (!!eventQueue) {
+      {
+        throw Error( "processEventQueue(): Additional events were enqueued while processing an event queue. Support for this has not yet been implemented." );
+      }
+    } // This would be a good time to rethrow if any of the event handlers threw.
+
+
+    rethrowCaughtError();
+  }
+
+  /**
+   * Gets the target node from a native browser event by accounting for
+   * inconsistencies in browser DOM APIs.
+   *
+   * @param {object} nativeEvent Native browser event.
+   * @return {DOMEventTarget} Target node.
+   */
+
+  function getEventTarget(nativeEvent) {
+    // Fallback to nativeEvent.srcElement for IE9
+    // https://github.com/facebook/react/issues/12506
+    var target = nativeEvent.target || nativeEvent.srcElement || window; // Normalize SVG <use> element events #4963
+
+    if (target.correspondingUseElement) {
+      target = target.correspondingUseElement;
+    } // Safari may fire events on text nodes (Node.TEXT_NODE is 3).
+    // @see http://www.quirksmode.org/js/events_properties.html
+
+
+    return target.nodeType === TEXT_NODE ? target.parentNode : target;
+  }
+
+  /**
+   * Checks if an event is supported in the current execution environment.
+   *
+   * NOTE: This will not work correctly for non-generic events such as `change`,
+   * `reset`, `load`, `error`, and `select`.
+   *
+   * Borrows from Modernizr.
+   *
+   * @param {string} eventNameSuffix Event name, e.g. "click".
+   * @return {boolean} True if the event is supported.
+   * @internal
+   * @license Modernizr 3.0.0pre (Custom Build) | MIT
+   */
+
+  function isEventSupported(eventNameSuffix) {
+    if (!canUseDOM) {
+      return false;
+    }
+
+    var eventName = 'on' + eventNameSuffix;
+    var isSupported = eventName in document;
+
+    if (!isSupported) {
+      var element = document.createElement('div');
+      element.setAttribute(eventName, 'return;');
+      isSupported = typeof element[eventName] === 'function';
+    }
+
+    return isSupported;
+  }
+
+  /**
+   * Summary of `DOMEventPluginSystem` event handling:
+   *
+   *  - Top-level delegation is used to trap most native browser events. This
+   *    may only occur in the main thread and is the responsibility of
+   *    ReactDOMEventListener, which is injected and can therefore support
+   *    pluggable event sources. This is the only work that occurs in the main
+   *    thread.
+   *
+   *  - We normalize and de-duplicate events to account for browser quirks. This
+   *    may be done in the worker thread.
+   *
+   *  - Forward these native events (with the associated top-level type used to
+   *    trap it) to `EventPluginRegistry`, which in turn will ask plugins if they want
+   *    to extract any synthetic events.
+   *
+   *  - The `EventPluginRegistry` will then process each event by annotating them with
+   *    "dispatches", a sequence of listeners and IDs that care about that event.
+   *
+   *  - The `EventPluginRegistry` then dispatches the events.
+   *
+   * Overview of React and the event system:
+   *
+   * +------------+    .
+   * |    DOM     |    .
+   * +------------+    .
+   *       |           .
+   *       v           .
+   * +------------+    .
+   * | ReactEvent |    .
+   * |  Listener  |    .
+   * +------------+    .                         +-----------+
+   *       |           .               +--------+|SimpleEvent|
+   *       |           .               |         |Plugin     |
+   * +-----|------+    .               v         +-----------+
+   * |     |      |    .    +--------------+                    +------------+
+   * |     +-----------.--->|PluginRegistry|                    |    Event   |
+   * |            |    .    |              |     +-----------+  | Propagators|
+   * | ReactEvent |    .    |              |     |TapEvent   |  |------------|
+   * |  Emitter   |    .    |              |<---+|Plugin     |  |other plugin|
+   * |            |    .    |              |     +-----------+  |  utilities |
+   * |     +-----------.--->|              |                    +------------+
+   * |     |      |    .    +--------------+
+   * +-----|------+    .                ^        +-----------+
+   *       |           .                |        |Enter/Leave|
+   *       +           .                +-------+|Plugin     |
+   * +-------------+   .                         +-----------+
+   * | application |   .
+   * |-------------|   .
+   * |             |   .
+   * |             |   .
+   * +-------------+   .
+   *                   .
+   *    React Core     .  General Purpose Event Plugin System
+   */
+
+  var CALLBACK_BOOKKEEPING_POOL_SIZE = 10;
+  var callbackBookkeepingPool = [];
+
+  function releaseTopLevelCallbackBookKeeping(instance) {
+    instance.topLevelType = null;
+    instance.nativeEvent = null;
+    instance.targetInst = null;
+    instance.ancestors.length = 0;
+
+    if (callbackBookkeepingPool.length < CALLBACK_BOOKKEEPING_POOL_SIZE) {
+      callbackBookkeepingPool.push(instance);
+    }
+  } // Used to store ancestor hierarchy in top level callback
+
+
+  function getTopLevelCallbackBookKeeping(topLevelType, nativeEvent, targetInst, eventSystemFlags) {
+    if (callbackBookkeepingPool.length) {
+      var instance = callbackBookkeepingPool.pop();
+      instance.topLevelType = topLevelType;
+      instance.eventSystemFlags = eventSystemFlags;
+      instance.nativeEvent = nativeEvent;
+      instance.targetInst = targetInst;
+      return instance;
+    }
+
+    return {
+      topLevelType: topLevelType,
+      eventSystemFlags: eventSystemFlags,
+      nativeEvent: nativeEvent,
+      targetInst: targetInst,
+      ancestors: []
+    };
+  }
+  /**
+   * Find the deepest React component completely containing the root of the
+   * passed-in instance (for use when entire React trees are nested within each
+   * other). If React trees are not nested, returns null.
+   */
+
+
+  function findRootContainerNode(inst) {
+    if (inst.tag === HostRoot) {
+      return inst.stateNode.containerInfo;
+    } // TODO: It may be a good idea to cache this to prevent unnecessary DOM
+    // traversal, but caching is difficult to do correctly without using a
+    // mutation observer to listen for all DOM changes.
+
+
+    while (inst.return) {
+      inst = inst.return;
+    }
+
+    if (inst.tag !== HostRoot) {
+      // This can happen if we're in a detached tree.
+      return null;
+    }
+
+    return inst.stateNode.containerInfo;
+  }
+  /**
+   * Allows registered plugins an opportunity to extract events from top-level
+   * native browser events.
+   *
+   * @return {*} An accumulation of synthetic events.
+   * @internal
+   */
+
+
+  function extractPluginEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) {
+    var events = null;
+
+    for (var i = 0; i < plugins.length; i++) {
+      // Not every plugin in the ordering may be loaded at runtime.
+      var possiblePlugin = plugins[i];
+
+      if (possiblePlugin) {
+        var extractedEvents = possiblePlugin.extractEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags);
+
+        if (extractedEvents) {
+          events = accumulateInto(events, extractedEvents);
+        }
+      }
+    }
+
+    return events;
+  }
+
+  function runExtractedPluginEventsInBatch(topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) {
+    var events = extractPluginEvents(topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags);
+    runEventsInBatch(events);
+  }
+
+  function handleTopLevel(bookKeeping) {
+    var targetInst = bookKeeping.targetInst; // Loop through the hierarchy, in case there's any nested components.
+    // It's important that we build the array of ancestors before calling any
+    // event handlers, because event handlers can modify the DOM, leading to
+    // inconsistencies with ReactMount's node cache. See #1105.
+
+    var ancestor = targetInst;
+
+    do {
+      if (!ancestor) {
+        var ancestors = bookKeeping.ancestors;
+        ancestors.push(ancestor);
+        break;
+      }
+
+      var root = findRootContainerNode(ancestor);
+
+      if (!root) {
+        break;
+      }
+
+      var tag = ancestor.tag;
+
+      if (tag === HostComponent || tag === HostText) {
+        bookKeeping.ancestors.push(ancestor);
+      }
+
+      ancestor = getClosestInstanceFromNode(root);
+    } while (ancestor);
+
+    for (var i = 0; i < bookKeeping.ancestors.length; i++) {
+      targetInst = bookKeeping.ancestors[i];
+      var eventTarget = getEventTarget(bookKeeping.nativeEvent);
+      var topLevelType = bookKeeping.topLevelType;
+      var nativeEvent = bookKeeping.nativeEvent;
+      var eventSystemFlags = bookKeeping.eventSystemFlags; // If this is the first ancestor, we mark it on the system flags
+
+      if (i === 0) {
+        eventSystemFlags |= IS_FIRST_ANCESTOR;
+      }
+
+      runExtractedPluginEventsInBatch(topLevelType, targetInst, nativeEvent, eventTarget, eventSystemFlags);
+    }
+  }
+
+  function dispatchEventForLegacyPluginEventSystem(topLevelType, eventSystemFlags, nativeEvent, targetInst) {
+    var bookKeeping = getTopLevelCallbackBookKeeping(topLevelType, nativeEvent, targetInst, eventSystemFlags);
+
+    try {
+      // Event queue being processed in the same cycle allows
+      // `preventDefault`.
+      batchedEventUpdates(handleTopLevel, bookKeeping);
+    } finally {
+      releaseTopLevelCallbackBookKeeping(bookKeeping);
+    }
+  }
+  /**
+   * We listen for bubbled touch events on the document object.
+   *
+   * Firefox v8.01 (and possibly others) exhibited strange behavior when
+   * mounting `onmousemove` events at some node that was not the document
+   * element. The symptoms were that if your mouse is not moving over something
+   * contained within that mount point (for example on the background) the
+   * top-level listeners for `onmousemove` won't be called. However, if you
+   * register the `mousemove` on the document object, then it will of course
+   * catch all `mousemove`s. This along with iOS quirks, justifies restricting
+   * top-level listeners to the document object only, at least for these
+   * movement types of events and possibly all events.
+   *
+   * @see http://www.quirksmode.org/blog/archives/2010/09/click_event_del.html
+   *
+   * Also, `keyup`/`keypress`/`keydown` do not bubble to the window on IE, but
+   * they bubble to document.
+   *
+   * @param {string} registrationName Name of listener (e.g. `onClick`).
+   * @param {object} mountAt Container where to mount the listener
+   */
+
+  function legacyListenToEvent(registrationName, mountAt) {
+    var listenerMap = getListenerMapForElement(mountAt);
+    var dependencies = registrationNameDependencies[registrationName];
+
+    for (var i = 0; i < dependencies.length; i++) {
+      var dependency = dependencies[i];
+      legacyListenToTopLevelEvent(dependency, mountAt, listenerMap);
+    }
+  }
+  function legacyListenToTopLevelEvent(topLevelType, mountAt, listenerMap) {
+    if (!listenerMap.has(topLevelType)) {
+      switch (topLevelType) {
+        case TOP_SCROLL:
+          trapCapturedEvent(TOP_SCROLL, mountAt);
+          break;
+
+        case TOP_FOCUS:
+        case TOP_BLUR:
+          trapCapturedEvent(TOP_FOCUS, mountAt);
+          trapCapturedEvent(TOP_BLUR, mountAt); // We set the flag for a single dependency later in this function,
+          // but this ensures we mark both as attached rather than just one.
+
+          listenerMap.set(TOP_BLUR, null);
+          listenerMap.set(TOP_FOCUS, null);
+          break;
+
+        case TOP_CANCEL:
+        case TOP_CLOSE:
+          if (isEventSupported(getRawEventName(topLevelType))) {
+            trapCapturedEvent(topLevelType, mountAt);
+          }
+
+          break;
+
+        case TOP_INVALID:
+        case TOP_SUBMIT:
+        case TOP_RESET:
+          // We listen to them on the target DOM elements.
+          // Some of them bubble so we don't want them to fire twice.
+          break;
+
+        default:
+          // By default, listen on the top level to all non-media events.
+          // Media events don't bubble so adding the listener wouldn't do anything.
+          var isMediaEvent = mediaEventTypes.indexOf(topLevelType) !== -1;
+
+          if (!isMediaEvent) {
+            trapBubbledEvent(topLevelType, mountAt);
+          }
+
+          break;
+      }
+
+      listenerMap.set(topLevelType, null);
+    }
+  }
+  function isListeningToAllDependencies(registrationName, mountAt) {
+    var listenerMap = getListenerMapForElement(mountAt);
+    var dependencies = registrationNameDependencies[registrationName];
+
+    for (var i = 0; i < dependencies.length; i++) {
+      var dependency = dependencies[i];
+
+      if (!listenerMap.has(dependency)) {
+        return false;
+      }
+    }
+
+    return true;
+  }
+
+  var attemptUserBlockingHydration;
+  function setAttemptUserBlockingHydration(fn) {
+    attemptUserBlockingHydration = fn;
+  }
+  var attemptContinuousHydration;
+  function setAttemptContinuousHydration(fn) {
+    attemptContinuousHydration = fn;
+  }
+  var attemptHydrationAtCurrentPriority;
+  function setAttemptHydrationAtCurrentPriority(fn) {
+    attemptHydrationAtCurrentPriority = fn;
+  } // TODO: Upgrade this definition once we're on a newer version of Flow that
+  var hasScheduledReplayAttempt = false; // The queue of discrete events to be replayed.
+
+  var queuedDiscreteEvents = []; // Indicates if any continuous event targets are non-null for early bailout.
+  // if the last target was dehydrated.
+
+  var queuedFocus = null;
+  var queuedDrag = null;
+  var queuedMouse = null; // For pointer events there can be one latest event per pointerId.
+
+  var queuedPointers = new Map();
+  var queuedPointerCaptures = new Map(); // We could consider replaying selectionchange and touchmoves too.
+
+  var queuedExplicitHydrationTargets = [];
+  function hasQueuedDiscreteEvents() {
+    return queuedDiscreteEvents.length > 0;
+  }
+  var discreteReplayableEvents = [TOP_MOUSE_DOWN, TOP_MOUSE_UP, TOP_TOUCH_CANCEL, TOP_TOUCH_END, TOP_TOUCH_START, TOP_AUX_CLICK, TOP_DOUBLE_CLICK, TOP_POINTER_CANCEL, TOP_POINTER_DOWN, TOP_POINTER_UP, TOP_DRAG_END, TOP_DRAG_START, TOP_DROP, TOP_COMPOSITION_END, TOP_COMPOSITION_START, TOP_KEY_DOWN, TOP_KEY_PRESS, TOP_KEY_UP, TOP_INPUT, TOP_TEXT_INPUT, TOP_CLOSE, TOP_CANCEL, TOP_COPY, TOP_CUT, TOP_PASTE, TOP_CLICK, TOP_CHANGE, TOP_CONTEXT_MENU, TOP_RESET, TOP_SUBMIT];
+  var continuousReplayableEvents = [TOP_FOCUS, TOP_BLUR, TOP_DRAG_ENTER, TOP_DRAG_LEAVE, TOP_MOUSE_OVER, TOP_MOUSE_OUT, TOP_POINTER_OVER, TOP_POINTER_OUT, TOP_GOT_POINTER_CAPTURE, TOP_LOST_POINTER_CAPTURE];
+  function isReplayableDiscreteEvent(eventType) {
+    return discreteReplayableEvents.indexOf(eventType) > -1;
+  }
+
+  function trapReplayableEventForDocument(topLevelType, document, listenerMap) {
+    legacyListenToTopLevelEvent(topLevelType, document, listenerMap);
+  }
+
+  function eagerlyTrapReplayableEvents(container, document) {
+    var listenerMapForDoc = getListenerMapForElement(document); // Discrete
+
+    discreteReplayableEvents.forEach(function (topLevelType) {
+      trapReplayableEventForDocument(topLevelType, document, listenerMapForDoc);
+    }); // Continuous
+
+    continuousReplayableEvents.forEach(function (topLevelType) {
+      trapReplayableEventForDocument(topLevelType, document, listenerMapForDoc);
+    });
+  }
+
+  function createQueuedReplayableEvent(blockedOn, topLevelType, eventSystemFlags, container, nativeEvent) {
+    return {
+      blockedOn: blockedOn,
+      topLevelType: topLevelType,
+      eventSystemFlags: eventSystemFlags | IS_REPLAYED,
+      nativeEvent: nativeEvent,
+      container: container
+    };
+  }
+
+  function queueDiscreteEvent(blockedOn, topLevelType, eventSystemFlags, container, nativeEvent) {
+    var queuedEvent = createQueuedReplayableEvent(blockedOn, topLevelType, eventSystemFlags, container, nativeEvent);
+    queuedDiscreteEvents.push(queuedEvent);
+  } // Resets the replaying for this type of continuous event to no event.
+
+  function clearIfContinuousEvent(topLevelType, nativeEvent) {
+    switch (topLevelType) {
+      case TOP_FOCUS:
+      case TOP_BLUR:
+        queuedFocus = null;
+        break;
+
+      case TOP_DRAG_ENTER:
+      case TOP_DRAG_LEAVE:
+        queuedDrag = null;
+        break;
+
+      case TOP_MOUSE_OVER:
+      case TOP_MOUSE_OUT:
+        queuedMouse = null;
+        break;
+
+      case TOP_POINTER_OVER:
+      case TOP_POINTER_OUT:
+        {
+          var pointerId = nativeEvent.pointerId;
+          queuedPointers.delete(pointerId);
+          break;
+        }
+
+      case TOP_GOT_POINTER_CAPTURE:
+      case TOP_LOST_POINTER_CAPTURE:
+        {
+          var _pointerId = nativeEvent.pointerId;
+          queuedPointerCaptures.delete(_pointerId);
+          break;
+        }
+    }
+  }
+
+  function accumulateOrCreateContinuousQueuedReplayableEvent(existingQueuedEvent, blockedOn, topLevelType, eventSystemFlags, container, nativeEvent) {
+    if (existingQueuedEvent === null || existingQueuedEvent.nativeEvent !== nativeEvent) {
+      var queuedEvent = createQueuedReplayableEvent(blockedOn, topLevelType, eventSystemFlags, container, nativeEvent);
+
+      if (blockedOn !== null) {
+        var _fiber2 = getInstanceFromNode$1(blockedOn);
+
+        if (_fiber2 !== null) {
+          // Attempt to increase the priority of this target.
+          attemptContinuousHydration(_fiber2);
+        }
+      }
+
+      return queuedEvent;
+    } // If we have already queued this exact event, then it's because
+    // the different event systems have different DOM event listeners.
+    // We can accumulate the flags and store a single event to be
+    // replayed.
+
+
+    existingQueuedEvent.eventSystemFlags |= eventSystemFlags;
+    return existingQueuedEvent;
+  }
+
+  function queueIfContinuousEvent(blockedOn, topLevelType, eventSystemFlags, container, nativeEvent) {
+    // These set relatedTarget to null because the replayed event will be treated as if we
+    // moved from outside the window (no target) onto the target once it hydrates.
+    // Instead of mutating we could clone the event.
+    switch (topLevelType) {
+      case TOP_FOCUS:
+        {
+          var focusEvent = nativeEvent;
+          queuedFocus = accumulateOrCreateContinuousQueuedReplayableEvent(queuedFocus, blockedOn, topLevelType, eventSystemFlags, container, focusEvent);
+          return true;
+        }
+
+      case TOP_DRAG_ENTER:
+        {
+          var dragEvent = nativeEvent;
+          queuedDrag = accumulateOrCreateContinuousQueuedReplayableEvent(queuedDrag, blockedOn, topLevelType, eventSystemFlags, container, dragEvent);
+          return true;
+        }
+
+      case TOP_MOUSE_OVER:
+        {
+          var mouseEvent = nativeEvent;
+          queuedMouse = accumulateOrCreateContinuousQueuedReplayableEvent(queuedMouse, blockedOn, topLevelType, eventSystemFlags, container, mouseEvent);
+          return true;
+        }
+
+      case TOP_POINTER_OVER:
+        {
+          var pointerEvent = nativeEvent;
+          var pointerId = pointerEvent.pointerId;
+          queuedPointers.set(pointerId, accumulateOrCreateContinuousQueuedReplayableEvent(queuedPointers.get(pointerId) || null, blockedOn, topLevelType, eventSystemFlags, container, pointerEvent));
+          return true;
+        }
+
+      case TOP_GOT_POINTER_CAPTURE:
+        {
+          var _pointerEvent = nativeEvent;
+          var _pointerId2 = _pointerEvent.pointerId;
+          queuedPointerCaptures.set(_pointerId2, accumulateOrCreateContinuousQueuedReplayableEvent(queuedPointerCaptures.get(_pointerId2) || null, blockedOn, topLevelType, eventSystemFlags, container, _pointerEvent));
+          return true;
+        }
+    }
+
+    return false;
+  } // Check if this target is unblocked. Returns true if it's unblocked.
+
+  function attemptExplicitHydrationTarget(queuedTarget) {
+    // TODO: This function shares a lot of logic with attemptToDispatchEvent.
+    // Try to unify them. It's a bit tricky since it would require two return
+    // values.
+    var targetInst = getClosestInstanceFromNode(queuedTarget.target);
+
+    if (targetInst !== null) {
+      var nearestMounted = getNearestMountedFiber(targetInst);
+
+      if (nearestMounted !== null) {
+        var tag = nearestMounted.tag;
+
+        if (tag === SuspenseComponent) {
+          var instance = getSuspenseInstanceFromFiber(nearestMounted);
+
+          if (instance !== null) {
+            // We're blocked on hydrating this boundary.
+            // Increase its priority.
+            queuedTarget.blockedOn = instance;
+            unstable_runWithPriority(queuedTarget.priority, function () {
+              attemptHydrationAtCurrentPriority(nearestMounted);
+            });
+            return;
+          }
+        } else if (tag === HostRoot) {
+          var root = nearestMounted.stateNode;
+
+          if (root.hydrate) {
+            queuedTarget.blockedOn = getContainerFromFiber(nearestMounted); // We don't currently have a way to increase the priority of
+            // a root other than sync.
+
+            return;
+          }
+        }
+      }
+    }
+
+    queuedTarget.blockedOn = null;
+  }
+
+  function attemptReplayContinuousQueuedEvent(queuedEvent) {
+    if (queuedEvent.blockedOn !== null) {
+      return false;
+    }
+
+    var nextBlockedOn = attemptToDispatchEvent(queuedEvent.topLevelType, queuedEvent.eventSystemFlags, queuedEvent.container, queuedEvent.nativeEvent);
+
+    if (nextBlockedOn !== null) {
+      // We're still blocked. Try again later.
+      var _fiber3 = getInstanceFromNode$1(nextBlockedOn);
+
+      if (_fiber3 !== null) {
+        attemptContinuousHydration(_fiber3);
+      }
+
+      queuedEvent.blockedOn = nextBlockedOn;
+      return false;
+    }
+
+    return true;
+  }
+
+  function attemptReplayContinuousQueuedEventInMap(queuedEvent, key, map) {
+    if (attemptReplayContinuousQueuedEvent(queuedEvent)) {
+      map.delete(key);
+    }
+  }
+
+  function replayUnblockedEvents() {
+    hasScheduledReplayAttempt = false; // First replay discrete events.
+
+    while (queuedDiscreteEvents.length > 0) {
+      var nextDiscreteEvent = queuedDiscreteEvents[0];
+
+      if (nextDiscreteEvent.blockedOn !== null) {
+        // We're still blocked.
+        // Increase the priority of this boundary to unblock
+        // the next discrete event.
+        var _fiber4 = getInstanceFromNode$1(nextDiscreteEvent.blockedOn);
+
+        if (_fiber4 !== null) {
+          attemptUserBlockingHydration(_fiber4);
+        }
+
+        break;
+      }
+
+      var nextBlockedOn = attemptToDispatchEvent(nextDiscreteEvent.topLevelType, nextDiscreteEvent.eventSystemFlags, nextDiscreteEvent.container, nextDiscreteEvent.nativeEvent);
+
+      if (nextBlockedOn !== null) {
+        // We're still blocked. Try again later.
+        nextDiscreteEvent.blockedOn = nextBlockedOn;
+      } else {
+        // We've successfully replayed the first event. Let's try the next one.
+        queuedDiscreteEvents.shift();
+      }
+    } // Next replay any continuous events.
+
+
+    if (queuedFocus !== null && attemptReplayContinuousQueuedEvent(queuedFocus)) {
+      queuedFocus = null;
+    }
+
+    if (queuedDrag !== null && attemptReplayContinuousQueuedEvent(queuedDrag)) {
+      queuedDrag = null;
+    }
+
+    if (queuedMouse !== null && attemptReplayContinuousQueuedEvent(queuedMouse)) {
+      queuedMouse = null;
+    }
+
+    queuedPointers.forEach(attemptReplayContinuousQueuedEventInMap);
+    queuedPointerCaptures.forEach(attemptReplayContinuousQueuedEventInMap);
+  }
+
+  function scheduleCallbackIfUnblocked(queuedEvent, unblocked) {
+    if (queuedEvent.blockedOn === unblocked) {
+      queuedEvent.blockedOn = null;
+
+      if (!hasScheduledReplayAttempt) {
+        hasScheduledReplayAttempt = true; // Schedule a callback to attempt replaying as many events as are
+        // now unblocked. This first might not actually be unblocked yet.
+        // We could check it early to avoid scheduling an unnecessary callback.
+
+        unstable_scheduleCallback(unstable_NormalPriority, replayUnblockedEvents);
+      }
+    }
+  }
+
+  function retryIfBlockedOn(unblocked) {
+    // Mark anything that was blocked on this as no longer blocked
+    // and eligible for a replay.
+    if (queuedDiscreteEvents.length > 0) {
+      scheduleCallbackIfUnblocked(queuedDiscreteEvents[0], unblocked); // This is a exponential search for each boundary that commits. I think it's
+      // worth it because we expect very few discrete events to queue up and once
+      // we are actually fully unblocked it will be fast to replay them.
+
+      for (var i = 1; i < queuedDiscreteEvents.length; i++) {
+        var queuedEvent = queuedDiscreteEvents[i];
+
+        if (queuedEvent.blockedOn === unblocked) {
+          queuedEvent.blockedOn = null;
+        }
+      }
+    }
+
+    if (queuedFocus !== null) {
+      scheduleCallbackIfUnblocked(queuedFocus, unblocked);
+    }
+
+    if (queuedDrag !== null) {
+      scheduleCallbackIfUnblocked(queuedDrag, unblocked);
+    }
+
+    if (queuedMouse !== null) {
+      scheduleCallbackIfUnblocked(queuedMouse, unblocked);
+    }
+
+    var unblock = function (queuedEvent) {
+      return scheduleCallbackIfUnblocked(queuedEvent, unblocked);
+    };
+
+    queuedPointers.forEach(unblock);
+    queuedPointerCaptures.forEach(unblock);
+
+    for (var _i = 0; _i < queuedExplicitHydrationTargets.length; _i++) {
+      var queuedTarget = queuedExplicitHydrationTargets[_i];
+
+      if (queuedTarget.blockedOn === unblocked) {
+        queuedTarget.blockedOn = null;
+      }
+    }
+
+    while (queuedExplicitHydrationTargets.length > 0) {
+      var nextExplicitTarget = queuedExplicitHydrationTargets[0];
+
+      if (nextExplicitTarget.blockedOn !== null) {
+        // We're still blocked.
+        break;
+      } else {
+        attemptExplicitHydrationTarget(nextExplicitTarget);
+
+        if (nextExplicitTarget.blockedOn === null) {
+          // We're unblocked.
+          queuedExplicitHydrationTargets.shift();
+        }
+      }
+    }
+  }
+
+  function addEventBubbleListener(element, eventType, listener) {
+    element.addEventListener(eventType, listener, false);
+  }
+  function addEventCaptureListener(element, eventType, listener) {
+    element.addEventListener(eventType, listener, true);
+  }
+
+  // do it in two places, which duplicates logic
+  // and increases the bundle size, we do it all
+  // here once. If we remove or refactor the
+  // SimpleEventPlugin, we should also remove or
+  // update the below line.
+
+  var simpleEventPluginEventTypes = {};
+  var topLevelEventsToDispatchConfig = new Map();
+  var eventPriorities = new Map(); // We store most of the events in this module in pairs of two strings so we can re-use
+  // the code required to apply the same logic for event prioritization and that of the
+  // SimpleEventPlugin. This complicates things slightly, but the aim is to reduce code
+  // duplication (for which there would be quite a bit). For the events that are not needed
+  // for the SimpleEventPlugin (otherDiscreteEvents) we process them separately as an
+  // array of top level events.
+  // Lastly, we ignore prettier so we can keep the formatting sane.
+  // prettier-ignore
+
+  var discreteEventPairsForSimpleEventPlugin = [TOP_BLUR, 'blur', TOP_CANCEL, 'cancel', TOP_CLICK, 'click', TOP_CLOSE, 'close', TOP_CONTEXT_MENU, 'contextMenu', TOP_COPY, 'copy', TOP_CUT, 'cut', TOP_AUX_CLICK, 'auxClick', TOP_DOUBLE_CLICK, 'doubleClick', TOP_DRAG_END, 'dragEnd', TOP_DRAG_START, 'dragStart', TOP_DROP, 'drop', TOP_FOCUS, 'focus', TOP_INPUT, 'input', TOP_INVALID, 'invalid', TOP_KEY_DOWN, 'keyDown', TOP_KEY_PRESS, 'keyPress', TOP_KEY_UP, 'keyUp', TOP_MOUSE_DOWN, 'mouseDown', TOP_MOUSE_UP, 'mouseUp', TOP_PASTE, 'paste', TOP_PAUSE, 'pause', TOP_PLAY, 'play', TOP_POINTER_CANCEL, 'pointerCancel', TOP_POINTER_DOWN, 'pointerDown', TOP_POINTER_UP, 'pointerUp', TOP_RATE_CHANGE, 'rateChange', TOP_RESET, 'reset', TOP_SEEKED, 'seeked', TOP_SUBMIT, 'submit', TOP_TOUCH_CANCEL, 'touchCancel', TOP_TOUCH_END, 'touchEnd', TOP_TOUCH_START, 'touchStart', TOP_VOLUME_CHANGE, 'volumeChange'];
+  var otherDiscreteEvents = [TOP_CHANGE, TOP_SELECTION_CHANGE, TOP_TEXT_INPUT, TOP_COMPOSITION_START, TOP_COMPOSITION_END, TOP_COMPOSITION_UPDATE]; // prettier-ignore
+
+  var userBlockingPairsForSimpleEventPlugin = [TOP_DRAG, 'drag', TOP_DRAG_ENTER, 'dragEnter', TOP_DRAG_EXIT, 'dragExit', TOP_DRAG_LEAVE, 'dragLeave', TOP_DRAG_OVER, 'dragOver', TOP_MOUSE_MOVE, 'mouseMove', TOP_MOUSE_OUT, 'mouseOut', TOP_MOUSE_OVER, 'mouseOver', TOP_POINTER_MOVE, 'pointerMove', TOP_POINTER_OUT, 'pointerOut', TOP_POINTER_OVER, 'pointerOver', TOP_SCROLL, 'scroll', TOP_TOGGLE, 'toggle', TOP_TOUCH_MOVE, 'touchMove', TOP_WHEEL, 'wheel']; // prettier-ignore
+
+  var continuousPairsForSimpleEventPlugin = [TOP_ABORT, 'abort', TOP_ANIMATION_END, 'animationEnd', TOP_ANIMATION_ITERATION, 'animationIteration', TOP_ANIMATION_START, 'animationStart', TOP_CAN_PLAY, 'canPlay', TOP_CAN_PLAY_THROUGH, 'canPlayThrough', TOP_DURATION_CHANGE, 'durationChange', TOP_EMPTIED, 'emptied', TOP_ENCRYPTED, 'encrypted', TOP_ENDED, 'ended', TOP_ERROR, 'error', TOP_GOT_POINTER_CAPTURE, 'gotPointerCapture', TOP_LOAD, 'load', TOP_LOADED_DATA, 'loadedData', TOP_LOADED_METADATA, 'loadedMetadata', TOP_LOAD_START, 'loadStart', TOP_LOST_POINTER_CAPTURE, 'lostPointerCapture', TOP_PLAYING, 'playing', TOP_PROGRESS, 'progress', TOP_SEEKING, 'seeking', TOP_STALLED, 'stalled', TOP_SUSPEND, 'suspend', TOP_TIME_UPDATE, 'timeUpdate', TOP_TRANSITION_END, 'transitionEnd', TOP_WAITING, 'waiting'];
+  /**
+   * Turns
+   * ['abort', ...]
+   * into
+   * eventTypes = {
+   *   'abort': {
+   *     phasedRegistrationNames: {
+   *       bubbled: 'onAbort',
+   *       captured: 'onAbortCapture',
+   *     },
+   *     dependencies: [TOP_ABORT],
+   *   },
+   *   ...
+   * };
+   * topLevelEventsToDispatchConfig = new Map([
+   *   [TOP_ABORT, { sameConfig }],
+   * ]);
+   */
+
+  function processSimpleEventPluginPairsByPriority(eventTypes, priority) {
+    // As the event types are in pairs of two, we need to iterate
+    // through in twos. The events are in pairs of two to save code
+    // and improve init perf of processing this array, as it will
+    // result in far fewer object allocations and property accesses
+    // if we only use three arrays to process all the categories of
+    // instead of tuples.
+    for (var i = 0; i < eventTypes.length; i += 2) {
+      var topEvent = eventTypes[i];
+      var event = eventTypes[i + 1];
+      var capitalizedEvent = event[0].toUpperCase() + event.slice(1);
+      var onEvent = 'on' + capitalizedEvent;
+      var config = {
+        phasedRegistrationNames: {
+          bubbled: onEvent,
+          captured: onEvent + 'Capture'
+        },
+        dependencies: [topEvent],
+        eventPriority: priority
+      };
+      eventPriorities.set(topEvent, priority);
+      topLevelEventsToDispatchConfig.set(topEvent, config);
+      simpleEventPluginEventTypes[event] = config;
+    }
+  }
+
+  function processTopEventPairsByPriority(eventTypes, priority) {
+    for (var i = 0; i < eventTypes.length; i++) {
+      eventPriorities.set(eventTypes[i], priority);
+    }
+  } // SimpleEventPlugin
+
+
+  processSimpleEventPluginPairsByPriority(discreteEventPairsForSimpleEventPlugin, DiscreteEvent);
+  processSimpleEventPluginPairsByPriority(userBlockingPairsForSimpleEventPlugin, UserBlockingEvent);
+  processSimpleEventPluginPairsByPriority(continuousPairsForSimpleEventPlugin, ContinuousEvent); // Not used by SimpleEventPlugin
+
+  processTopEventPairsByPriority(otherDiscreteEvents, DiscreteEvent);
+  function getEventPriorityForPluginSystem(topLevelType) {
+    var priority = eventPriorities.get(topLevelType); // Default to a ContinuousEvent. Note: we might
+    // want to warn if we can't detect the priority
+    // for the event.
+
+    return priority === undefined ? ContinuousEvent : priority;
+  }
+
+  // Intentionally not named imports because Rollup would use dynamic dispatch for
+  var UserBlockingPriority = unstable_UserBlockingPriority,
+      runWithPriority = unstable_runWithPriority; // TODO: can we stop exporting these?
+
+  var _enabled = true;
+  function setEnabled(enabled) {
+    _enabled = !!enabled;
+  }
+  function isEnabled() {
+    return _enabled;
+  }
+  function trapBubbledEvent(topLevelType, element) {
+    trapEventForPluginEventSystem(element, topLevelType, false);
+  }
+  function trapCapturedEvent(topLevelType, element) {
+    trapEventForPluginEventSystem(element, topLevelType, true);
+  }
+
+  function trapEventForPluginEventSystem(container, topLevelType, capture) {
+    var listener;
+
+    switch (getEventPriorityForPluginSystem(topLevelType)) {
+      case DiscreteEvent:
+        listener = dispatchDiscreteEvent.bind(null, topLevelType, PLUGIN_EVENT_SYSTEM, container);
+        break;
+
+      case UserBlockingEvent:
+        listener = dispatchUserBlockingUpdate.bind(null, topLevelType, PLUGIN_EVENT_SYSTEM, container);
+        break;
+
+      case ContinuousEvent:
+      default:
+        listener = dispatchEvent.bind(null, topLevelType, PLUGIN_EVENT_SYSTEM, container);
+        break;
+    }
+
+    var rawEventName = getRawEventName(topLevelType);
+
+    if (capture) {
+      addEventCaptureListener(container, rawEventName, listener);
+    } else {
+      addEventBubbleListener(container, rawEventName, listener);
+    }
+  }
+
+  function dispatchDiscreteEvent(topLevelType, eventSystemFlags, container, nativeEvent) {
+    flushDiscreteUpdatesIfNeeded(nativeEvent.timeStamp);
+    discreteUpdates(dispatchEvent, topLevelType, eventSystemFlags, container, nativeEvent);
+  }
+
+  function dispatchUserBlockingUpdate(topLevelType, eventSystemFlags, container, nativeEvent) {
+    runWithPriority(UserBlockingPriority, dispatchEvent.bind(null, topLevelType, eventSystemFlags, container, nativeEvent));
+  }
+
+  function dispatchEvent(topLevelType, eventSystemFlags, container, nativeEvent) {
+    if (!_enabled) {
+      return;
+    }
+
+    if (hasQueuedDiscreteEvents() && isReplayableDiscreteEvent(topLevelType)) {
+      // If we already have a queue of discrete events, and this is another discrete
+      // event, then we can't dispatch it regardless of its target, since they
+      // need to dispatch in order.
+      queueDiscreteEvent(null, // Flags that we're not actually blocked on anything as far as we know.
+      topLevelType, eventSystemFlags, container, nativeEvent);
+      return;
+    }
+
+    var blockedOn = attemptToDispatchEvent(topLevelType, eventSystemFlags, container, nativeEvent);
+
+    if (blockedOn === null) {
+      // We successfully dispatched this event.
+      clearIfContinuousEvent(topLevelType, nativeEvent);
+      return;
+    }
+
+    if (isReplayableDiscreteEvent(topLevelType)) {
+      // This this to be replayed later once the target is available.
+      queueDiscreteEvent(blockedOn, topLevelType, eventSystemFlags, container, nativeEvent);
+      return;
+    }
+
+    if (queueIfContinuousEvent(blockedOn, topLevelType, eventSystemFlags, container, nativeEvent)) {
+      return;
+    } // We need to clear only if we didn't queue because
+    // queueing is accummulative.
+
+
+    clearIfContinuousEvent(topLevelType, nativeEvent); // This is not replayable so we'll invoke it but without a target,
+    // in case the event system needs to trace it.
+
+    {
+      dispatchEventForLegacyPluginEventSystem(topLevelType, eventSystemFlags, nativeEvent, null);
+    }
+  } // Attempt dispatching an event. Returns a SuspenseInstance or Container if it's blocked.
+
+  function attemptToDispatchEvent(topLevelType, eventSystemFlags, container, nativeEvent) {
+    // TODO: Warn if _enabled is false.
+    var nativeEventTarget = getEventTarget(nativeEvent);
+    var targetInst = getClosestInstanceFromNode(nativeEventTarget);
+
+    if (targetInst !== null) {
+      var nearestMounted = getNearestMountedFiber(targetInst);
+
+      if (nearestMounted === null) {
+        // This tree has been unmounted already. Dispatch without a target.
+        targetInst = null;
+      } else {
+        var tag = nearestMounted.tag;
+
+        if (tag === SuspenseComponent) {
+          var instance = getSuspenseInstanceFromFiber(nearestMounted);
+
+          if (instance !== null) {
+            // Queue the event to be replayed later. Abort dispatching since we
+            // don't want this event dispatched twice through the event system.
+            // TODO: If this is the first discrete event in the queue. Schedule an increased
+            // priority for this boundary.
+            return instance;
+          } // This shouldn't happen, something went wrong but to avoid blocking
+          // the whole system, dispatch the event without a target.
+          // TODO: Warn.
+
+
+          targetInst = null;
+        } else if (tag === HostRoot) {
+          var root = nearestMounted.stateNode;
+
+          if (root.hydrate) {
+            // If this happens during a replay something went wrong and it might block
+            // the whole system.
+            return getContainerFromFiber(nearestMounted);
+          }
+
+          targetInst = null;
+        } else if (nearestMounted !== targetInst) {
+          // If we get an event (ex: img onload) before committing that
+          // component's mount, ignore it for now (that is, treat it as if it was an
+          // event on a non-React tree). We might also consider queueing events and
+          // dispatching them after the mount.
+          targetInst = null;
+        }
+      }
+    }
+
+    {
+      dispatchEventForLegacyPluginEventSystem(topLevelType, eventSystemFlags, nativeEvent, targetInst);
+    } // We're not blocked on anything.
+
+
+    return null;
+  }
+
+  // List derived from Gecko source code:
+  // https://github.com/mozilla/gecko-dev/blob/4e638efc71/layout/style/test/property_database.js
+  var shorthandToLonghand = {
+    animation: ['animationDelay', 'animationDirection', 'animationDuration', 'animationFillMode', 'animationIterationCount', 'animationName', 'animationPlayState', 'animationTimingFunction'],
+    background: ['backgroundAttachment', 'backgroundClip', 'backgroundColor', 'backgroundImage', 'backgroundOrigin', 'backgroundPositionX', 'backgroundPositionY', 'backgroundRepeat', 'backgroundSize'],
+    backgroundPosition: ['backgroundPositionX', 'backgroundPositionY'],
+    border: ['borderBottomColor', 'borderBottomStyle', 'borderBottomWidth', 'borderImageOutset', 'borderImageRepeat', 'borderImageSlice', 'borderImageSource', 'borderImageWidth', 'borderLeftColor', 'borderLeftStyle', 'borderLeftWidth', 'borderRightColor', 'borderRightStyle', 'borderRightWidth', 'borderTopColor', 'borderTopStyle', 'borderTopWidth'],
+    borderBlockEnd: ['borderBlockEndColor', 'borderBlockEndStyle', 'borderBlockEndWidth'],
+    borderBlockStart: ['borderBlockStartColor', 'borderBlockStartStyle', 'borderBlockStartWidth'],
+    borderBottom: ['borderBottomColor', 'borderBottomStyle', 'borderBottomWidth'],
+    borderColor: ['borderBottomColor', 'borderLeftColor', 'borderRightColor', 'borderTopColor'],
+    borderImage: ['borderImageOutset', 'borderImageRepeat', 'borderImageSlice', 'borderImageSource', 'borderImageWidth'],
+    borderInlineEnd: ['borderInlineEndColor', 'borderInlineEndStyle', 'borderInlineEndWidth'],
+    borderInlineStart: ['borderInlineStartColor', 'borderInlineStartStyle', 'borderInlineStartWidth'],
+    borderLeft: ['borderLeftColor', 'borderLeftStyle', 'borderLeftWidth'],
+    borderRadius: ['borderBottomLeftRadius', 'borderBottomRightRadius', 'borderTopLeftRadius', 'borderTopRightRadius'],
+    borderRight: ['borderRightColor', 'borderRightStyle', 'borderRightWidth'],
+    borderStyle: ['borderBottomStyle', 'borderLeftStyle', 'borderRightStyle', 'borderTopStyle'],
+    borderTop: ['borderTopColor', 'borderTopStyle', 'borderTopWidth'],
+    borderWidth: ['borderBottomWidth', 'borderLeftWidth', 'borderRightWidth', 'borderTopWidth'],
+    columnRule: ['columnRuleColor', 'columnRuleStyle', 'columnRuleWidth'],
+    columns: ['columnCount', 'columnWidth'],
+    flex: ['flexBasis', 'flexGrow', 'flexShrink'],
+    flexFlow: ['flexDirection', 'flexWrap'],
+    font: ['fontFamily', 'fontFeatureSettings', 'fontKerning', 'fontLanguageOverride', 'fontSize', 'fontSizeAdjust', 'fontStretch', 'fontStyle', 'fontVariant', 'fontVariantAlternates', 'fontVariantCaps', 'fontVariantEastAsian', 'fontVariantLigatures', 'fontVariantNumeric', 'fontVariantPosition', 'fontWeight', 'lineHeight'],
+    fontVariant: ['fontVariantAlternates', 'fontVariantCaps', 'fontVariantEastAsian', 'fontVariantLigatures', 'fontVariantNumeric', 'fontVariantPosition'],
+    gap: ['columnGap', 'rowGap'],
+    grid: ['gridAutoColumns', 'gridAutoFlow', 'gridAutoRows', 'gridTemplateAreas', 'gridTemplateColumns', 'gridTemplateRows'],
+    gridArea: ['gridColumnEnd', 'gridColumnStart', 'gridRowEnd', 'gridRowStart'],
+    gridColumn: ['gridColumnEnd', 'gridColumnStart'],
+    gridColumnGap: ['columnGap'],
+    gridGap: ['columnGap', 'rowGap'],
+    gridRow: ['gridRowEnd', 'gridRowStart'],
+    gridRowGap: ['rowGap'],
+    gridTemplate: ['gridTemplateAreas', 'gridTemplateColumns', 'gridTemplateRows'],
+    listStyle: ['listStyleImage', 'listStylePosition', 'listStyleType'],
+    margin: ['marginBottom', 'marginLeft', 'marginRight', 'marginTop'],
+    marker: ['markerEnd', 'markerMid', 'markerStart'],
+    mask: ['maskClip', 'maskComposite', 'maskImage', 'maskMode', 'maskOrigin', 'maskPositionX', 'maskPositionY', 'maskRepeat', 'maskSize'],
+    maskPosition: ['maskPositionX', 'maskPositionY'],
+    outline: ['outlineColor', 'outlineStyle', 'outlineWidth'],
+    overflow: ['overflowX', 'overflowY'],
+    padding: ['paddingBottom', 'paddingLeft', 'paddingRight', 'paddingTop'],
+    placeContent: ['alignContent', 'justifyContent'],
+    placeItems: ['alignItems', 'justifyItems'],
+    placeSelf: ['alignSelf', 'justifySelf'],
+    textDecoration: ['textDecorationColor', 'textDecorationLine', 'textDecorationStyle'],
+    textEmphasis: ['textEmphasisColor', 'textEmphasisStyle'],
+    transition: ['transitionDelay', 'transitionDuration', 'transitionProperty', 'transitionTimingFunction'],
+    wordWrap: ['overflowWrap']
+  };
+
+  /**
+   * CSS properties which accept numbers but are not in units of "px".
+   */
+  var isUnitlessNumber = {
+    animationIterationCount: true,
+    borderImageOutset: true,
+    borderImageSlice: true,
+    borderImageWidth: true,
+    boxFlex: true,
+    boxFlexGroup: true,
+    boxOrdinalGroup: true,
+    columnCount: true,
+    columns: true,
+    flex: true,
+    flexGrow: true,
+    flexPositive: true,
+    flexShrink: true,
+    flexNegative: true,
+    flexOrder: true,
+    gridArea: true,
+    gridRow: true,
+    gridRowEnd: true,
+    gridRowSpan: true,
+    gridRowStart: true,
+    gridColumn: true,
+    gridColumnEnd: true,
+    gridColumnSpan: true,
+    gridColumnStart: true,
+    fontWeight: true,
+    lineClamp: true,
+    lineHeight: true,
+    opacity: true,
+    order: true,
+    orphans: true,
+    tabSize: true,
+    widows: true,
+    zIndex: true,
+    zoom: true,
+    // SVG-related properties
+    fillOpacity: true,
+    floodOpacity: true,
+    stopOpacity: true,
+    strokeDasharray: true,
+    strokeDashoffset: true,
+    strokeMiterlimit: true,
+    strokeOpacity: true,
+    strokeWidth: true
+  };
+  /**
+   * @param {string} prefix vendor-specific prefix, eg: Webkit
+   * @param {string} key style name, eg: transitionDuration
+   * @return {string} style name prefixed with `prefix`, properly camelCased, eg:
+   * WebkitTransitionDuration
+   */
+
+  function prefixKey(prefix, key) {
+    return prefix + key.charAt(0).toUpperCase() + key.substring(1);
+  }
+  /**
+   * Support style names that may come passed in prefixed by adding permutations
+   * of vendor prefixes.
+   */
+
+
+  var prefixes = ['Webkit', 'ms', 'Moz', 'O']; // Using Object.keys here, or else the vanilla for-in loop makes IE8 go into an
+  // infinite loop, because it iterates over the newly added props too.
+
+  Object.keys(isUnitlessNumber).forEach(function (prop) {
+    prefixes.forEach(function (prefix) {
+      isUnitlessNumber[prefixKey(prefix, prop)] = isUnitlessNumber[prop];
+    });
+  });
+
+  /**
+   * Convert a value into the proper css writable value. The style name `name`
+   * should be logical (no hyphens), as specified
+   * in `CSSProperty.isUnitlessNumber`.
+   *
+   * @param {string} name CSS property name such as `topMargin`.
+   * @param {*} value CSS property value such as `10px`.
+   * @return {string} Normalized style value with dimensions applied.
+   */
+
+  function dangerousStyleValue(name, value, isCustomProperty) {
+    // Note that we've removed escapeTextForBrowser() calls here since the
+    // whole string will be escaped when the attribute is injected into
+    // the markup. If you provide unsafe user data here they can inject
+    // arbitrary CSS which may be problematic (I couldn't repro this):
+    // https://www.owasp.org/index.php/XSS_Filter_Evasion_Cheat_Sheet
+    // http://www.thespanner.co.uk/2007/11/26/ultimate-xss-css-injection/
+    // This is not an XSS hole but instead a potential CSS injection issue
+    // which has lead to a greater discussion about how we're going to
+    // trust URLs moving forward. See #2115901
+    var isEmpty = value == null || typeof value === 'boolean' || value === '';
+
+    if (isEmpty) {
+      return '';
+    }
+
+    if (!isCustomProperty && typeof value === 'number' && value !== 0 && !(isUnitlessNumber.hasOwnProperty(name) && isUnitlessNumber[name])) {
+      return value + 'px'; // Presumes implicit 'px' suffix for unitless numbers
+    }
+
+    return ('' + value).trim();
+  }
+
+  var uppercasePattern = /([A-Z])/g;
+  var msPattern = /^ms-/;
+  /**
+   * Hyphenates a camelcased CSS property name, for example:
+   *
+   *   > hyphenateStyleName('backgroundColor')
+   *   < "background-color"
+   *   > hyphenateStyleName('MozTransition')
+   *   < "-moz-transition"
+   *   > hyphenateStyleName('msTransition')
+   *   < "-ms-transition"
+   *
+   * As Modernizr suggests (http://modernizr.com/docs/#prefixed), an `ms` prefix
+   * is converted to `-ms-`.
+   */
+
+  function hyphenateStyleName(name) {
+    return name.replace(uppercasePattern, '-$1').toLowerCase().replace(msPattern, '-ms-');
+  }
+
+  var warnValidStyle = function () {};
+
+  {
+    // 'msTransform' is correct, but the other prefixes should be capitalized
+    var badVendoredStyleNamePattern = /^(?:webkit|moz|o)[A-Z]/;
+    var msPattern$1 = /^-ms-/;
+    var hyphenPattern = /-(.)/g; // style values shouldn't contain a semicolon
+
+    var badStyleValueWithSemicolonPattern = /;\s*$/;
+    var warnedStyleNames = {};
+    var warnedStyleValues = {};
+    var warnedForNaNValue = false;
+    var warnedForInfinityValue = false;
+
+    var camelize = function (string) {
+      return string.replace(hyphenPattern, function (_, character) {
+        return character.toUpperCase();
+      });
+    };
+
+    var warnHyphenatedStyleName = function (name) {
+      if (warnedStyleNames.hasOwnProperty(name) && warnedStyleNames[name]) {
+        return;
+      }
+
+      warnedStyleNames[name] = true;
+
+      error('Unsupported style property %s. Did you mean %s?', name, // As Andi Smith suggests
+      // (http://www.andismith.com/blog/2012/02/modernizr-prefixed/), an `-ms` prefix
+      // is converted to lowercase `ms`.
+      camelize(name.replace(msPattern$1, 'ms-')));
+    };
+
+    var warnBadVendoredStyleName = function (name) {
+      if (warnedStyleNames.hasOwnProperty(name) && warnedStyleNames[name]) {
+        return;
+      }
+
+      warnedStyleNames[name] = true;
+
+      error('Unsupported vendor-prefixed style property %s. Did you mean %s?', name, name.charAt(0).toUpperCase() + name.slice(1));
+    };
+
+    var warnStyleValueWithSemicolon = function (name, value) {
+      if (warnedStyleValues.hasOwnProperty(value) && warnedStyleValues[value]) {
+        return;
+      }
+
+      warnedStyleValues[value] = true;
+
+      error("Style property values shouldn't contain a semicolon. " + 'Try "%s: %s" instead.', name, value.replace(badStyleValueWithSemicolonPattern, ''));
+    };
+
+    var warnStyleValueIsNaN = function (name, value) {
+      if (warnedForNaNValue) {
+        return;
+      }
+
+      warnedForNaNValue = true;
+
+      error('`NaN` is an invalid value for the `%s` css style property.', name);
+    };
+
+    var warnStyleValueIsInfinity = function (name, value) {
+      if (warnedForInfinityValue) {
+        return;
+      }
+
+      warnedForInfinityValue = true;
+
+      error('`Infinity` is an invalid value for the `%s` css style property.', name);
+    };
+
+    warnValidStyle = function (name, value) {
+      if (name.indexOf('-') > -1) {
+        warnHyphenatedStyleName(name);
+      } else if (badVendoredStyleNamePattern.test(name)) {
+        warnBadVendoredStyleName(name);
+      } else if (badStyleValueWithSemicolonPattern.test(value)) {
+        warnStyleValueWithSemicolon(name, value);
+      }
+
+      if (typeof value === 'number') {
+        if (isNaN(value)) {
+          warnStyleValueIsNaN(name, value);
+        } else if (!isFinite(value)) {
+          warnStyleValueIsInfinity(name, value);
+        }
+      }
+    };
+  }
+
+  var warnValidStyle$1 = warnValidStyle;
+
+  /**
+   * Operations for dealing with CSS properties.
+   */
+
+  /**
+   * This creates a string that is expected to be equivalent to the style
+   * attribute generated by server-side rendering. It by-passes warnings and
+   * security checks so it's not safe to use this value for anything other than
+   * comparison. It is only used in DEV for SSR validation.
+   */
+
+  function createDangerousStringForStyles(styles) {
+    {
+      var serialized = '';
+      var delimiter = '';
+
+      for (var styleName in styles) {
+        if (!styles.hasOwnProperty(styleName)) {
+          continue;
+        }
+
+        var styleValue = styles[styleName];
+
+        if (styleValue != null) {
+          var isCustomProperty = styleName.indexOf('--') === 0;
+          serialized += delimiter + (isCustomProperty ? styleName : hyphenateStyleName(styleName)) + ':';
+          serialized += dangerousStyleValue(styleName, styleValue, isCustomProperty);
+          delimiter = ';';
+        }
+      }
+
+      return serialized || null;
+    }
+  }
+  /**
+   * Sets the value for multiple styles on a node.  If a value is specified as
+   * '' (empty string), the corresponding style property will be unset.
+   *
+   * @param {DOMElement} node
+   * @param {object} styles
+   */
+
+  function setValueForStyles(node, styles) {
+    var style = node.style;
+
+    for (var styleName in styles) {
+      if (!styles.hasOwnProperty(styleName)) {
+        continue;
+      }
+
+      var isCustomProperty = styleName.indexOf('--') === 0;
+
+      {
+        if (!isCustomProperty) {
+          warnValidStyle$1(styleName, styles[styleName]);
+        }
+      }
+
+      var styleValue = dangerousStyleValue(styleName, styles[styleName], isCustomProperty);
+
+      if (styleName === 'float') {
+        styleName = 'cssFloat';
+      }
+
+      if (isCustomProperty) {
+        style.setProperty(styleName, styleValue);
+      } else {
+        style[styleName] = styleValue;
+      }
+    }
+  }
+
+  function isValueEmpty(value) {
+    return value == null || typeof value === 'boolean' || value === '';
+  }
+  /**
+   * Given {color: 'red', overflow: 'hidden'} returns {
+   *   color: 'color',
+   *   overflowX: 'overflow',
+   *   overflowY: 'overflow',
+   * }. This can be read as "the overflowY property was set by the overflow
+   * shorthand". That is, the values are the property that each was derived from.
+   */
+
+
+  function expandShorthandMap(styles) {
+    var expanded = {};
+
+    for (var key in styles) {
+      var longhands = shorthandToLonghand[key] || [key];
+
+      for (var i = 0; i < longhands.length; i++) {
+        expanded[longhands[i]] = key;
+      }
+    }
+
+    return expanded;
+  }
+  /**
+   * When mixing shorthand and longhand property names, we warn during updates if
+   * we expect an incorrect result to occur. In particular, we warn for:
+   *
+   * Updating a shorthand property (longhand gets overwritten):
+   *   {font: 'foo', fontVariant: 'bar'} -> {font: 'baz', fontVariant: 'bar'}
+   *   becomes .style.font = 'baz'
+   * Removing a shorthand property (longhand gets lost too):
+   *   {font: 'foo', fontVariant: 'bar'} -> {fontVariant: 'bar'}
+   *   becomes .style.font = ''
+   * Removing a longhand property (should revert to shorthand; doesn't):
+   *   {font: 'foo', fontVariant: 'bar'} -> {font: 'foo'}
+   *   becomes .style.fontVariant = ''
+   */
+
+
+  function validateShorthandPropertyCollisionInDev(styleUpdates, nextStyles) {
+    {
+
+      if (!nextStyles) {
+        return;
+      }
+
+      var expandedUpdates = expandShorthandMap(styleUpdates);
+      var expandedStyles = expandShorthandMap(nextStyles);
+      var warnedAbout = {};
+
+      for (var key in expandedUpdates) {
+        var originalKey = expandedUpdates[key];
+        var correctOriginalKey = expandedStyles[key];
+
+        if (correctOriginalKey && originalKey !== correctOriginalKey) {
+          var warningKey = originalKey + ',' + correctOriginalKey;
+
+          if (warnedAbout[warningKey]) {
+            continue;
+          }
+
+          warnedAbout[warningKey] = true;
+
+          error('%s a style property during rerender (%s) when a ' + 'conflicting property is set (%s) can lead to styling bugs. To ' + "avoid this, don't mix shorthand and non-shorthand properties " + 'for the same value; instead, replace the shorthand with ' + 'separate values.', isValueEmpty(styleUpdates[originalKey]) ? 'Removing' : 'Updating', originalKey, correctOriginalKey);
+        }
+      }
+    }
+  }
+
+  // For HTML, certain tags should omit their close tag. We keep a whitelist for
+  // those special-case tags.
+  var omittedCloseTags = {
+    area: true,
+    base: true,
+    br: true,
+    col: true,
+    embed: true,
+    hr: true,
+    img: true,
+    input: true,
+    keygen: true,
+    link: true,
+    meta: true,
+    param: true,
+    source: true,
+    track: true,
+    wbr: true // NOTE: menuitem's close tag should be omitted, but that causes problems.
+
+  };
+
+  // `omittedCloseTags` except that `menuitem` should still have its closing tag.
+
+  var voidElementTags = _assign({
+    menuitem: true
+  }, omittedCloseTags);
+
+  var HTML = '__html';
+  var ReactDebugCurrentFrame$3 = null;
+
+  {
+    ReactDebugCurrentFrame$3 = ReactSharedInternals.ReactDebugCurrentFrame;
+  }
+
+  function assertValidProps(tag, props) {
+    if (!props) {
+      return;
+    } // Note the use of `==` which checks for null or undefined.
+
+
+    if (voidElementTags[tag]) {
+      if (!(props.children == null && props.dangerouslySetInnerHTML == null)) {
+        {
+          throw Error( tag + " is a void element tag and must neither have `children` nor use `dangerouslySetInnerHTML`." + ( ReactDebugCurrentFrame$3.getStackAddendum() ) );
+        }
+      }
+    }
+
+    if (props.dangerouslySetInnerHTML != null) {
+      if (!(props.children == null)) {
+        {
+          throw Error( "Can only set one of `children` or `props.dangerouslySetInnerHTML`." );
+        }
+      }
+
+      if (!(typeof props.dangerouslySetInnerHTML === 'object' && HTML in props.dangerouslySetInnerHTML)) {
+        {
+          throw Error( "`props.dangerouslySetInnerHTML` must be in the form `{__html: ...}`. Please visit https://fb.me/react-invariant-dangerously-set-inner-html for more information." );
+        }
+      }
+    }
+
+    {
+      if (!props.suppressContentEditableWarning && props.contentEditable && props.children != null) {
+        error('A component is `contentEditable` and contains `children` managed by ' + 'React. It is now your responsibility to guarantee that none of ' + 'those nodes are unexpectedly modified or duplicated. This is ' + 'probably not intentional.');
+      }
+    }
+
+    if (!(props.style == null || typeof props.style === 'object')) {
+      {
+        throw Error( "The `style` prop expects a mapping from style properties to values, not a string. For example, style={{marginRight: spacing + 'em'}} when using JSX." + ( ReactDebugCurrentFrame$3.getStackAddendum() ) );
+      }
+    }
+  }
+
+  function isCustomComponent(tagName, props) {
+    if (tagName.indexOf('-') === -1) {
+      return typeof props.is === 'string';
+    }
+
+    switch (tagName) {
+      // These are reserved SVG and MathML elements.
+      // We don't mind this whitelist too much because we expect it to never grow.
+      // The alternative is to track the namespace in a few places which is convoluted.
+      // https://w3c.github.io/webcomponents/spec/custom/#custom-elements-core-concepts
+      case 'annotation-xml':
+      case 'color-profile':
+      case 'font-face':
+      case 'font-face-src':
+      case 'font-face-uri':
+      case 'font-face-format':
+      case 'font-face-name':
+      case 'missing-glyph':
+        return false;
+
+      default:
+        return true;
+    }
+  }
+
+  // When adding attributes to the HTML or SVG whitelist, be sure to
+  // also add them to this module to ensure casing and incorrect name
+  // warnings.
+  var possibleStandardNames = {
+    // HTML
+    accept: 'accept',
+    acceptcharset: 'acceptCharset',
+    'accept-charset': 'acceptCharset',
+    accesskey: 'accessKey',
+    action: 'action',
+    allowfullscreen: 'allowFullScreen',
+    alt: 'alt',
+    as: 'as',
+    async: 'async',
+    autocapitalize: 'autoCapitalize',
+    autocomplete: 'autoComplete',
+    autocorrect: 'autoCorrect',
+    autofocus: 'autoFocus',
+    autoplay: 'autoPlay',
+    autosave: 'autoSave',
+    capture: 'capture',
+    cellpadding: 'cellPadding',
+    cellspacing: 'cellSpacing',
+    challenge: 'challenge',
+    charset: 'charSet',
+    checked: 'checked',
+    children: 'children',
+    cite: 'cite',
+    class: 'className',
+    classid: 'classID',
+    classname: 'className',
+    cols: 'cols',
+    colspan: 'colSpan',
+    content: 'content',
+    contenteditable: 'contentEditable',
+    contextmenu: 'contextMenu',
+    controls: 'controls',
+    controlslist: 'controlsList',
+    coords: 'coords',
+    crossorigin: 'crossOrigin',
+    dangerouslysetinnerhtml: 'dangerouslySetInnerHTML',
+    data: 'data',
+    datetime: 'dateTime',
+    default: 'default',
+    defaultchecked: 'defaultChecked',
+    defaultvalue: 'defaultValue',
+    defer: 'defer',
+    dir: 'dir',
+    disabled: 'disabled',
+    disablepictureinpicture: 'disablePictureInPicture',
+    download: 'download',
+    draggable: 'draggable',
+    enctype: 'encType',
+    for: 'htmlFor',
+    form: 'form',
+    formmethod: 'formMethod',
+    formaction: 'formAction',
+    formenctype: 'formEncType',
+    formnovalidate: 'formNoValidate',
+    formtarget: 'formTarget',
+    frameborder: 'frameBorder',
+    headers: 'headers',
+    height: 'height',
+    hidden: 'hidden',
+    high: 'high',
+    href: 'href',
+    hreflang: 'hrefLang',
+    htmlfor: 'htmlFor',
+    httpequiv: 'httpEquiv',
+    'http-equiv': 'httpEquiv',
+    icon: 'icon',
+    id: 'id',
+    innerhtml: 'innerHTML',
+    inputmode: 'inputMode',
+    integrity: 'integrity',
+    is: 'is',
+    itemid: 'itemID',
+    itemprop: 'itemProp',
+    itemref: 'itemRef',
+    itemscope: 'itemScope',
+    itemtype: 'itemType',
+    keyparams: 'keyParams',
+    keytype: 'keyType',
+    kind: 'kind',
+    label: 'label',
+    lang: 'lang',
+    list: 'list',
+    loop: 'loop',
+    low: 'low',
+    manifest: 'manifest',
+    marginwidth: 'marginWidth',
+    marginheight: 'marginHeight',
+    max: 'max',
+    maxlength: 'maxLength',
+    media: 'media',
+    mediagroup: 'mediaGroup',
+    method: 'method',
+    min: 'min',
+    minlength: 'minLength',
+    multiple: 'multiple',
+    muted: 'muted',
+    name: 'name',
+    nomodule: 'noModule',
+    nonce: 'nonce',
+    novalidate: 'noValidate',
+    open: 'open',
+    optimum: 'optimum',
+    pattern: 'pattern',
+    placeholder: 'placeholder',
+    playsinline: 'playsInline',
+    poster: 'poster',
+    preload: 'preload',
+    profile: 'profile',
+    radiogroup: 'radioGroup',
+    readonly: 'readOnly',
+    referrerpolicy: 'referrerPolicy',
+    rel: 'rel',
+    required: 'required',
+    reversed: 'reversed',
+    role: 'role',
+    rows: 'rows',
+    rowspan: 'rowSpan',
+    sandbox: 'sandbox',
+    scope: 'scope',
+    scoped: 'scoped',
+    scrolling: 'scrolling',
+    seamless: 'seamless',
+    selected: 'selected',
+    shape: 'shape',
+    size: 'size',
+    sizes: 'sizes',
+    span: 'span',
+    spellcheck: 'spellCheck',
+    src: 'src',
+    srcdoc: 'srcDoc',
+    srclang: 'srcLang',
+    srcset: 'srcSet',
+    start: 'start',
+    step: 'step',
+    style: 'style',
+    summary: 'summary',
+    tabindex: 'tabIndex',
+    target: 'target',
+    title: 'title',
+    type: 'type',
+    usemap: 'useMap',
+    value: 'value',
+    width: 'width',
+    wmode: 'wmode',
+    wrap: 'wrap',
+    // SVG
+    about: 'about',
+    accentheight: 'accentHeight',
+    'accent-height': 'accentHeight',
+    accumulate: 'accumulate',
+    additive: 'additive',
+    alignmentbaseline: 'alignmentBaseline',
+    'alignment-baseline': 'alignmentBaseline',
+    allowreorder: 'allowReorder',
+    alphabetic: 'alphabetic',
+    amplitude: 'amplitude',
+    arabicform: 'arabicForm',
+    'arabic-form': 'arabicForm',
+    ascent: 'ascent',
+    attributename: 'attributeName',
+    attributetype: 'attributeType',
+    autoreverse: 'autoReverse',
+    azimuth: 'azimuth',
+    basefrequency: 'baseFrequency',
+    baselineshift: 'baselineShift',
+    'baseline-shift': 'baselineShift',
+    baseprofile: 'baseProfile',
+    bbox: 'bbox',
+    begin: 'begin',
+    bias: 'bias',
+    by: 'by',
+    calcmode: 'calcMode',
+    capheight: 'capHeight',
+    'cap-height': 'capHeight',
+    clip: 'clip',
+    clippath: 'clipPath',
+    'clip-path': 'clipPath',
+    clippathunits: 'clipPathUnits',
+    cliprule: 'clipRule',
+    'clip-rule': 'clipRule',
+    color: 'color',
+    colorinterpolation: 'colorInterpolation',
+    'color-interpolation': 'colorInterpolation',
+    colorinterpolationfilters: 'colorInterpolationFilters',
+    'color-interpolation-filters': 'colorInterpolationFilters',
+    colorprofile: 'colorProfile',
+    'color-profile': 'colorProfile',
+    colorrendering: 'colorRendering',
+    'color-rendering': 'colorRendering',
+    contentscripttype: 'contentScriptType',
+    contentstyletype: 'contentStyleType',
+    cursor: 'cursor',
+    cx: 'cx',
+    cy: 'cy',
+    d: 'd',
+    datatype: 'datatype',
+    decelerate: 'decelerate',
+    descent: 'descent',
+    diffuseconstant: 'diffuseConstant',
+    direction: 'direction',
+    display: 'display',
+    divisor: 'divisor',
+    dominantbaseline: 'dominantBaseline',
+    'dominant-baseline': 'dominantBaseline',
+    dur: 'dur',
+    dx: 'dx',
+    dy: 'dy',
+    edgemode: 'edgeMode',
+    elevation: 'elevation',
+    enablebackground: 'enableBackground',
+    'enable-background': 'enableBackground',
+    end: 'end',
+    exponent: 'exponent',
+    externalresourcesrequired: 'externalResourcesRequired',
+    fill: 'fill',
+    fillopacity: 'fillOpacity',
+    'fill-opacity': 'fillOpacity',
+    fillrule: 'fillRule',
+    'fill-rule': 'fillRule',
+    filter: 'filter',
+    filterres: 'filterRes',
+    filterunits: 'filterUnits',
+    floodopacity: 'floodOpacity',
+    'flood-opacity': 'floodOpacity',
+    floodcolor: 'floodColor',
+    'flood-color': 'floodColor',
+    focusable: 'focusable',
+    fontfamily: 'fontFamily',
+    'font-family': 'fontFamily',
+    fontsize: 'fontSize',
+    'font-size': 'fontSize',
+    fontsizeadjust: 'fontSizeAdjust',
+    'font-size-adjust': 'fontSizeAdjust',
+    fontstretch: 'fontStretch',
+    'font-stretch': 'fontStretch',
+    fontstyle: 'fontStyle',
+    'font-style': 'fontStyle',
+    fontvariant: 'fontVariant',
+    'font-variant': 'fontVariant',
+    fontweight: 'fontWeight',
+    'font-weight': 'fontWeight',
+    format: 'format',
+    from: 'from',
+    fx: 'fx',
+    fy: 'fy',
+    g1: 'g1',
+    g2: 'g2',
+    glyphname: 'glyphName',
+    'glyph-name': 'glyphName',
+    glyphorientationhorizontal: 'glyphOrientationHorizontal',
+    'glyph-orientation-horizontal': 'glyphOrientationHorizontal',
+    glyphorientationvertical: 'glyphOrientationVertical',
+    'glyph-orientation-vertical': 'glyphOrientationVertical',
+    glyphref: 'glyphRef',
+    gradienttransform: 'gradientTransform',
+    gradientunits: 'gradientUnits',
+    hanging: 'hanging',
+    horizadvx: 'horizAdvX',
+    'horiz-adv-x': 'horizAdvX',
+    horizoriginx: 'horizOriginX',
+    'horiz-origin-x': 'horizOriginX',
+    ideographic: 'ideographic',
+    imagerendering: 'imageRendering',
+    'image-rendering': 'imageRendering',
+    in2: 'in2',
+    in: 'in',
+    inlist: 'inlist',
+    intercept: 'intercept',
+    k1: 'k1',
+    k2: 'k2',
+    k3: 'k3',
+    k4: 'k4',
+    k: 'k',
+    kernelmatrix: 'kernelMatrix',
+    kernelunitlength: 'kernelUnitLength',
+    kerning: 'kerning',
+    keypoints: 'keyPoints',
+    keysplines: 'keySplines',
+    keytimes: 'keyTimes',
+    lengthadjust: 'lengthAdjust',
+    letterspacing: 'letterSpacing',
+    'letter-spacing': 'letterSpacing',
+    lightingcolor: 'lightingColor',
+    'lighting-color': 'lightingColor',
+    limitingconeangle: 'limitingConeAngle',
+    local: 'local',
+    markerend: 'markerEnd',
+    'marker-end': 'markerEnd',
+    markerheight: 'markerHeight',
+    markermid: 'markerMid',
+    'marker-mid': 'markerMid',
+    markerstart: 'markerStart',
+    'marker-start': 'markerStart',
+    markerunits: 'markerUnits',
+    markerwidth: 'markerWidth',
+    mask: 'mask',
+    maskcontentunits: 'maskContentUnits',
+    maskunits: 'maskUnits',
+    mathematical: 'mathematical',
+    mode: 'mode',
+    numoctaves: 'numOctaves',
+    offset: 'offset',
+    opacity: 'opacity',
+    operator: 'operator',
+    order: 'order',
+    orient: 'orient',
+    orientation: 'orientation',
+    origin: 'origin',
+    overflow: 'overflow',
+    overlineposition: 'overlinePosition',
+    'overline-position': 'overlinePosition',
+    overlinethickness: 'overlineThickness',
+    'overline-thickness': 'overlineThickness',
+    paintorder: 'paintOrder',
+    'paint-order': 'paintOrder',
+    panose1: 'panose1',
+    'panose-1': 'panose1',
+    pathlength: 'pathLength',
+    patterncontentunits: 'patternContentUnits',
+    patterntransform: 'patternTransform',
+    patternunits: 'patternUnits',
+    pointerevents: 'pointerEvents',
+    'pointer-events': 'pointerEvents',
+    points: 'points',
+    pointsatx: 'pointsAtX',
+    pointsaty: 'pointsAtY',
+    pointsatz: 'pointsAtZ',
+    prefix: 'prefix',
+    preservealpha: 'preserveAlpha',
+    preserveaspectratio: 'preserveAspectRatio',
+    primitiveunits: 'primitiveUnits',
+    property: 'property',
+    r: 'r',
+    radius: 'radius',
+    refx: 'refX',
+    refy: 'refY',
+    renderingintent: 'renderingIntent',
+    'rendering-intent': 'renderingIntent',
+    repeatcount: 'repeatCount',
+    repeatdur: 'repeatDur',
+    requiredextensions: 'requiredExtensions',
+    requiredfeatures: 'requiredFeatures',
+    resource: 'resource',
+    restart: 'restart',
+    result: 'result',
+    results: 'results',
+    rotate: 'rotate',
+    rx: 'rx',
+    ry: 'ry',
+    scale: 'scale',
+    security: 'security',
+    seed: 'seed',
+    shaperendering: 'shapeRendering',
+    'shape-rendering': 'shapeRendering',
+    slope: 'slope',
+    spacing: 'spacing',
+    specularconstant: 'specularConstant',
+    specularexponent: 'specularExponent',
+    speed: 'speed',
+    spreadmethod: 'spreadMethod',
+    startoffset: 'startOffset',
+    stddeviation: 'stdDeviation',
+    stemh: 'stemh',
+    stemv: 'stemv',
+    stitchtiles: 'stitchTiles',
+    stopcolor: 'stopColor',
+    'stop-color': 'stopColor',
+    stopopacity: 'stopOpacity',
+    'stop-opacity': 'stopOpacity',
+    strikethroughposition: 'strikethroughPosition',
+    'strikethrough-position': 'strikethroughPosition',
+    strikethroughthickness: 'strikethroughThickness',
+    'strikethrough-thickness': 'strikethroughThickness',
+    string: 'string',
+    stroke: 'stroke',
+    strokedasharray: 'strokeDasharray',
+    'stroke-dasharray': 'strokeDasharray',
+    strokedashoffset: 'strokeDashoffset',
+    'stroke-dashoffset': 'strokeDashoffset',
+    strokelinecap: 'strokeLinecap',
+    'stroke-linecap': 'strokeLinecap',
+    strokelinejoin: 'strokeLinejoin',
+    'stroke-linejoin': 'strokeLinejoin',
+    strokemiterlimit: 'strokeMiterlimit',
+    'stroke-miterlimit': 'strokeMiterlimit',
+    strokewidth: 'strokeWidth',
+    'stroke-width': 'strokeWidth',
+    strokeopacity: 'strokeOpacity',
+    'stroke-opacity': 'strokeOpacity',
+    suppresscontenteditablewarning: 'suppressContentEditableWarning',
+    suppresshydrationwarning: 'suppressHydrationWarning',
+    surfacescale: 'surfaceScale',
+    systemlanguage: 'systemLanguage',
+    tablevalues: 'tableValues',
+    targetx: 'targetX',
+    targety: 'targetY',
+    textanchor: 'textAnchor',
+    'text-anchor': 'textAnchor',
+    textdecoration: 'textDecoration',
+    'text-decoration': 'textDecoration',
+    textlength: 'textLength',
+    textrendering: 'textRendering',
+    'text-rendering': 'textRendering',
+    to: 'to',
+    transform: 'transform',
+    typeof: 'typeof',
+    u1: 'u1',
+    u2: 'u2',
+    underlineposition: 'underlinePosition',
+    'underline-position': 'underlinePosition',
+    underlinethickness: 'underlineThickness',
+    'underline-thickness': 'underlineThickness',
+    unicode: 'unicode',
+    unicodebidi: 'unicodeBidi',
+    'unicode-bidi': 'unicodeBidi',
+    unicoderange: 'unicodeRange',
+    'unicode-range': 'unicodeRange',
+    unitsperem: 'unitsPerEm',
+    'units-per-em': 'unitsPerEm',
+    unselectable: 'unselectable',
+    valphabetic: 'vAlphabetic',
+    'v-alphabetic': 'vAlphabetic',
+    values: 'values',
+    vectoreffect: 'vectorEffect',
+    'vector-effect': 'vectorEffect',
+    version: 'version',
+    vertadvy: 'vertAdvY',
+    'vert-adv-y': 'vertAdvY',
+    vertoriginx: 'vertOriginX',
+    'vert-origin-x': 'vertOriginX',
+    vertoriginy: 'vertOriginY',
+    'vert-origin-y': 'vertOriginY',
+    vhanging: 'vHanging',
+    'v-hanging': 'vHanging',
+    videographic: 'vIdeographic',
+    'v-ideographic': 'vIdeographic',
+    viewbox: 'viewBox',
+    viewtarget: 'viewTarget',
+    visibility: 'visibility',
+    vmathematical: 'vMathematical',
+    'v-mathematical': 'vMathematical',
+    vocab: 'vocab',
+    widths: 'widths',
+    wordspacing: 'wordSpacing',
+    'word-spacing': 'wordSpacing',
+    writingmode: 'writingMode',
+    'writing-mode': 'writingMode',
+    x1: 'x1',
+    x2: 'x2',
+    x: 'x',
+    xchannelselector: 'xChannelSelector',
+    xheight: 'xHeight',
+    'x-height': 'xHeight',
+    xlinkactuate: 'xlinkActuate',
+    'xlink:actuate': 'xlinkActuate',
+    xlinkarcrole: 'xlinkArcrole',
+    'xlink:arcrole': 'xlinkArcrole',
+    xlinkhref: 'xlinkHref',
+    'xlink:href': 'xlinkHref',
+    xlinkrole: 'xlinkRole',
+    'xlink:role': 'xlinkRole',
+    xlinkshow: 'xlinkShow',
+    'xlink:show': 'xlinkShow',
+    xlinktitle: 'xlinkTitle',
+    'xlink:title': 'xlinkTitle',
+    xlinktype: 'xlinkType',
+    'xlink:type': 'xlinkType',
+    xmlbase: 'xmlBase',
+    'xml:base': 'xmlBase',
+    xmllang: 'xmlLang',
+    'xml:lang': 'xmlLang',
+    xmlns: 'xmlns',
+    'xml:space': 'xmlSpace',
+    xmlnsxlink: 'xmlnsXlink',
+    'xmlns:xlink': 'xmlnsXlink',
+    xmlspace: 'xmlSpace',
+    y1: 'y1',
+    y2: 'y2',
+    y: 'y',
+    ychannelselector: 'yChannelSelector',
+    z: 'z',
+    zoomandpan: 'zoomAndPan'
+  };
+
+  var ariaProperties = {
+    'aria-current': 0,
+    // state
+    'aria-details': 0,
+    'aria-disabled': 0,
+    // state
+    'aria-hidden': 0,
+    // state
+    'aria-invalid': 0,
+    // state
+    'aria-keyshortcuts': 0,
+    'aria-label': 0,
+    'aria-roledescription': 0,
+    // Widget Attributes
+    'aria-autocomplete': 0,
+    'aria-checked': 0,
+    'aria-expanded': 0,
+    'aria-haspopup': 0,
+    'aria-level': 0,
+    'aria-modal': 0,
+    'aria-multiline': 0,
+    'aria-multiselectable': 0,
+    'aria-orientation': 0,
+    'aria-placeholder': 0,
+    'aria-pressed': 0,
+    'aria-readonly': 0,
+    'aria-required': 0,
+    'aria-selected': 0,
+    'aria-sort': 0,
+    'aria-valuemax': 0,
+    'aria-valuemin': 0,
+    'aria-valuenow': 0,
+    'aria-valuetext': 0,
+    // Live Region Attributes
+    'aria-atomic': 0,
+    'aria-busy': 0,
+    'aria-live': 0,
+    'aria-relevant': 0,
+    // Drag-and-Drop Attributes
+    'aria-dropeffect': 0,
+    'aria-grabbed': 0,
+    // Relationship Attributes
+    'aria-activedescendant': 0,
+    'aria-colcount': 0,
+    'aria-colindex': 0,
+    'aria-colspan': 0,
+    'aria-controls': 0,
+    'aria-describedby': 0,
+    'aria-errormessage': 0,
+    'aria-flowto': 0,
+    'aria-labelledby': 0,
+    'aria-owns': 0,
+    'aria-posinset': 0,
+    'aria-rowcount': 0,
+    'aria-rowindex': 0,
+    'aria-rowspan': 0,
+    'aria-setsize': 0
+  };
+
+  var warnedProperties = {};
+  var rARIA = new RegExp('^(aria)-[' + ATTRIBUTE_NAME_CHAR + ']*$');
+  var rARIACamel = new RegExp('^(aria)[A-Z][' + ATTRIBUTE_NAME_CHAR + ']*$');
+  var hasOwnProperty$1 = Object.prototype.hasOwnProperty;
+
+  function validateProperty(tagName, name) {
+    {
+      if (hasOwnProperty$1.call(warnedProperties, name) && warnedProperties[name]) {
+        return true;
+      }
+
+      if (rARIACamel.test(name)) {
+        var ariaName = 'aria-' + name.slice(4).toLowerCase();
+        var correctName = ariaProperties.hasOwnProperty(ariaName) ? ariaName : null; // If this is an aria-* attribute, but is not listed in the known DOM
+        // DOM properties, then it is an invalid aria-* attribute.
+
+        if (correctName == null) {
+          error('Invalid ARIA attribute `%s`. ARIA attributes follow the pattern aria-* and must be lowercase.', name);
+
+          warnedProperties[name] = true;
+          return true;
+        } // aria-* attributes should be lowercase; suggest the lowercase version.
+
+
+        if (name !== correctName) {
+          error('Invalid ARIA attribute `%s`. Did you mean `%s`?', name, correctName);
+
+          warnedProperties[name] = true;
+          return true;
+        }
+      }
+
+      if (rARIA.test(name)) {
+        var lowerCasedName = name.toLowerCase();
+        var standardName = ariaProperties.hasOwnProperty(lowerCasedName) ? lowerCasedName : null; // If this is an aria-* attribute, but is not listed in the known DOM
+        // DOM properties, then it is an invalid aria-* attribute.
+
+        if (standardName == null) {
+          warnedProperties[name] = true;
+          return false;
+        } // aria-* attributes should be lowercase; suggest the lowercase version.
+
+
+        if (name !== standardName) {
+          error('Unknown ARIA attribute `%s`. Did you mean `%s`?', name, standardName);
+
+          warnedProperties[name] = true;
+          return true;
+        }
+      }
+    }
+
+    return true;
+  }
+
+  function warnInvalidARIAProps(type, props) {
+    {
+      var invalidProps = [];
+
+      for (var key in props) {
+        var isValid = validateProperty(type, key);
+
+        if (!isValid) {
+          invalidProps.push(key);
+        }
+      }
+
+      var unknownPropString = invalidProps.map(function (prop) {
+        return '`' + prop + '`';
+      }).join(', ');
+
+      if (invalidProps.length === 1) {
+        error('Invalid aria prop %s on <%s> tag. ' + 'For details, see https://fb.me/invalid-aria-prop', unknownPropString, type);
+      } else if (invalidProps.length > 1) {
+        error('Invalid aria props %s on <%s> tag. ' + 'For details, see https://fb.me/invalid-aria-prop', unknownPropString, type);
+      }
+    }
+  }
+
+  function validateProperties(type, props) {
+    if (isCustomComponent(type, props)) {
+      return;
+    }
+
+    warnInvalidARIAProps(type, props);
+  }
+
+  var didWarnValueNull = false;
+  function validateProperties$1(type, props) {
+    {
+      if (type !== 'input' && type !== 'textarea' && type !== 'select') {
+        return;
+      }
+
+      if (props != null && props.value === null && !didWarnValueNull) {
+        didWarnValueNull = true;
+
+        if (type === 'select' && props.multiple) {
+          error('`value` prop on `%s` should not be null. ' + 'Consider using an empty array when `multiple` is set to `true` ' + 'to clear the component or `undefined` for uncontrolled components.', type);
+        } else {
+          error('`value` prop on `%s` should not be null. ' + 'Consider using an empty string to clear the component or `undefined` ' + 'for uncontrolled components.', type);
+        }
+      }
+    }
+  }
+
+  var validateProperty$1 = function () {};
+
+  {
+    var warnedProperties$1 = {};
+    var _hasOwnProperty = Object.prototype.hasOwnProperty;
+    var EVENT_NAME_REGEX = /^on./;
+    var INVALID_EVENT_NAME_REGEX = /^on[^A-Z]/;
+    var rARIA$1 = new RegExp('^(aria)-[' + ATTRIBUTE_NAME_CHAR + ']*$');
+    var rARIACamel$1 = new RegExp('^(aria)[A-Z][' + ATTRIBUTE_NAME_CHAR + ']*$');
+
+    validateProperty$1 = function (tagName, name, value, canUseEventSystem) {
+      if (_hasOwnProperty.call(warnedProperties$1, name) && warnedProperties$1[name]) {
+        return true;
+      }
+
+      var lowerCasedName = name.toLowerCase();
+
+      if (lowerCasedName === 'onfocusin' || lowerCasedName === 'onfocusout') {
+        error('React uses onFocus and onBlur instead of onFocusIn and onFocusOut. ' + 'All React events are normalized to bubble, so onFocusIn and onFocusOut ' + 'are not needed/supported by React.');
+
+        warnedProperties$1[name] = true;
+        return true;
+      } // We can't rely on the event system being injected on the server.
+
+
+      if (canUseEventSystem) {
+        if (registrationNameModules.hasOwnProperty(name)) {
+          return true;
+        }
+
+        var registrationName = possibleRegistrationNames.hasOwnProperty(lowerCasedName) ? possibleRegistrationNames[lowerCasedName] : null;
+
+        if (registrationName != null) {
+          error('Invalid event handler property `%s`. Did you mean `%s`?', name, registrationName);
+
+          warnedProperties$1[name] = true;
+          return true;
+        }
+
+        if (EVENT_NAME_REGEX.test(name)) {
+          error('Unknown event handler property `%s`. It will be ignored.', name);
+
+          warnedProperties$1[name] = true;
+          return true;
+        }
+      } else if (EVENT_NAME_REGEX.test(name)) {
+        // If no event plugins have been injected, we are in a server environment.
+        // So we can't tell if the event name is correct for sure, but we can filter
+        // out known bad ones like `onclick`. We can't suggest a specific replacement though.
+        if (INVALID_EVENT_NAME_REGEX.test(name)) {
+          error('Invalid event handler property `%s`. ' + 'React events use the camelCase naming convention, for example `onClick`.', name);
+        }
+
+        warnedProperties$1[name] = true;
+        return true;
+      } // Let the ARIA attribute hook validate ARIA attributes
+
+
+      if (rARIA$1.test(name) || rARIACamel$1.test(name)) {
+        return true;
+      }
+
+      if (lowerCasedName === 'innerhtml') {
+        error('Directly setting property `innerHTML` is not permitted. ' + 'For more information, lookup documentation on `dangerouslySetInnerHTML`.');
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+
+      if (lowerCasedName === 'aria') {
+        error('The `aria` attribute is reserved for future use in React. ' + 'Pass individual `aria-` attributes instead.');
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+
+      if (lowerCasedName === 'is' && value !== null && value !== undefined && typeof value !== 'string') {
+        error('Received a `%s` for a string attribute `is`. If this is expected, cast ' + 'the value to a string.', typeof value);
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+
+      if (typeof value === 'number' && isNaN(value)) {
+        error('Received NaN for the `%s` attribute. If this is expected, cast ' + 'the value to a string.', name);
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+
+      var propertyInfo = getPropertyInfo(name);
+      var isReserved = propertyInfo !== null && propertyInfo.type === RESERVED; // Known attributes should match the casing specified in the property config.
+
+      if (possibleStandardNames.hasOwnProperty(lowerCasedName)) {
+        var standardName = possibleStandardNames[lowerCasedName];
+
+        if (standardName !== name) {
+          error('Invalid DOM property `%s`. Did you mean `%s`?', name, standardName);
+
+          warnedProperties$1[name] = true;
+          return true;
+        }
+      } else if (!isReserved && name !== lowerCasedName) {
+        // Unknown attributes should have lowercase casing since that's how they
+        // will be cased anyway with server rendering.
+        error('React does not recognize the `%s` prop on a DOM element. If you ' + 'intentionally want it to appear in the DOM as a custom ' + 'attribute, spell it as lowercase `%s` instead. ' + 'If you accidentally passed it from a parent component, remove ' + 'it from the DOM element.', name, lowerCasedName);
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+
+      if (typeof value === 'boolean' && shouldRemoveAttributeWithWarning(name, value, propertyInfo, false)) {
+        if (value) {
+          error('Received `%s` for a non-boolean attribute `%s`.\n\n' + 'If you want to write it to the DOM, pass a string instead: ' + '%s="%s" or %s={value.toString()}.', value, name, name, value, name);
+        } else {
+          error('Received `%s` for a non-boolean attribute `%s`.\n\n' + 'If you want to write it to the DOM, pass a string instead: ' + '%s="%s" or %s={value.toString()}.\n\n' + 'If you used to conditionally omit it with %s={condition && value}, ' + 'pass %s={condition ? value : undefined} instead.', value, name, name, value, name, name, name);
+        }
+
+        warnedProperties$1[name] = true;
+        return true;
+      } // Now that we've validated casing, do not validate
+      // data types for reserved props
+
+
+      if (isReserved) {
+        return true;
+      } // Warn when a known attribute is a bad type
+
+
+      if (shouldRemoveAttributeWithWarning(name, value, propertyInfo, false)) {
+        warnedProperties$1[name] = true;
+        return false;
+      } // Warn when passing the strings 'false' or 'true' into a boolean prop
+
+
+      if ((value === 'false' || value === 'true') && propertyInfo !== null && propertyInfo.type === BOOLEAN) {
+        error('Received the string `%s` for the boolean attribute `%s`. ' + '%s ' + 'Did you mean %s={%s}?', value, name, value === 'false' ? 'The browser will interpret it as a truthy value.' : 'Although this works, it will not work as expected if you pass the string "false".', name, value);
+
+        warnedProperties$1[name] = true;
+        return true;
+      }
+
+      return true;
+    };
+  }
+
+  var warnUnknownProperties = function (type, props, canUseEventSystem) {
+    {
+      var unknownProps = [];
+
+      for (var key in props) {
+        var isValid = validateProperty$1(type, key, props[key], canUseEventSystem);
+
+        if (!isValid) {
+          unknownProps.push(key);
+        }
+      }
+
+      var unknownPropString = unknownProps.map(function (prop) {
+        return '`' + prop + '`';
+      }).join(', ');
+
+      if (unknownProps.length === 1) {
+        error('Invalid value for prop %s on <%s> tag. Either remove it from the element, ' + 'or pass a string or number value to keep it in the DOM. ' + 'For details, see https://fb.me/react-attribute-behavior', unknownPropString, type);
+      } else if (unknownProps.length > 1) {
+        error('Invalid values for props %s on <%s> tag. Either remove them from the element, ' + 'or pass a string or number value to keep them in the DOM. ' + 'For details, see https://fb.me/react-attribute-behavior', unknownPropString, type);
+      }
+    }
+  };
+
+  function validateProperties$2(type, props, canUseEventSystem) {
+    if (isCustomComponent(type, props)) {
+      return;
+    }
+
+    warnUnknownProperties(type, props, canUseEventSystem);
+  }
+
+  var didWarnInvalidHydration = false;
+  var DANGEROUSLY_SET_INNER_HTML = 'dangerouslySetInnerHTML';
+  var SUPPRESS_CONTENT_EDITABLE_WARNING = 'suppressContentEditableWarning';
+  var SUPPRESS_HYDRATION_WARNING = 'suppressHydrationWarning';
+  var AUTOFOCUS = 'autoFocus';
+  var CHILDREN = 'children';
+  var STYLE = 'style';
+  var HTML$1 = '__html';
+  var HTML_NAMESPACE$1 = Namespaces.html;
+  var warnedUnknownTags;
+  var suppressHydrationWarning;
+  var validatePropertiesInDevelopment;
+  var warnForTextDifference;
+  var warnForPropDifference;
+  var warnForExtraAttributes;
+  var warnForInvalidEventListener;
+  var canDiffStyleForHydrationWarning;
+  var normalizeMarkupForTextOrAttribute;
+  var normalizeHTML;
+
+  {
+    warnedUnknownTags = {
+      // Chrome is the only major browser not shipping <time>. But as of July
+      // 2017 it intends to ship it due to widespread usage. We intentionally
+      // *don't* warn for <time> even if it's unrecognized by Chrome because
+      // it soon will be, and many apps have been using it anyway.
+      time: true,
+      // There are working polyfills for <dialog>. Let people use it.
+      dialog: true,
+      // Electron ships a custom <webview> tag to display external web content in
+      // an isolated frame and process.
+      // This tag is not present in non Electron environments such as JSDom which
+      // is often used for testing purposes.
+      // @see https://electronjs.org/docs/api/webview-tag
+      webview: true
+    };
+
+    validatePropertiesInDevelopment = function (type, props) {
+      validateProperties(type, props);
+      validateProperties$1(type, props);
+      validateProperties$2(type, props,
+      /* canUseEventSystem */
+      true);
+    }; // IE 11 parses & normalizes the style attribute as opposed to other
+    // browsers. It adds spaces and sorts the properties in some
+    // non-alphabetical order. Handling that would require sorting CSS
+    // properties in the client & server versions or applying
+    // `expectedStyle` to a temporary DOM node to read its `style` attribute
+    // normalized. Since it only affects IE, we're skipping style warnings
+    // in that browser completely in favor of doing all that work.
+    // See https://github.com/facebook/react/issues/11807
+
+
+    canDiffStyleForHydrationWarning = canUseDOM && !document.documentMode; // HTML parsing normalizes CR and CRLF to LF.
+    // It also can turn \u0000 into \uFFFD inside attributes.
+    // https://www.w3.org/TR/html5/single-page.html#preprocessing-the-input-stream
+    // If we have a mismatch, it might be caused by that.
+    // We will still patch up in this case but not fire the warning.
+
+    var NORMALIZE_NEWLINES_REGEX = /\r\n?/g;
+    var NORMALIZE_NULL_AND_REPLACEMENT_REGEX = /\u0000|\uFFFD/g;
+
+    normalizeMarkupForTextOrAttribute = function (markup) {
+      var markupString = typeof markup === 'string' ? markup : '' + markup;
+      return markupString.replace(NORMALIZE_NEWLINES_REGEX, '\n').replace(NORMALIZE_NULL_AND_REPLACEMENT_REGEX, '');
+    };
+
+    warnForTextDifference = function (serverText, clientText) {
+      if (didWarnInvalidHydration) {
+        return;
+      }
+
+      var normalizedClientText = normalizeMarkupForTextOrAttribute(clientText);
+      var normalizedServerText = normalizeMarkupForTextOrAttribute(serverText);
+
+      if (normalizedServerText === normalizedClientText) {
+        return;
+      }
+
+      didWarnInvalidHydration = true;
+
+      error('Text content did not match. Server: "%s" Client: "%s"', normalizedServerText, normalizedClientText);
+    };
+
+    warnForPropDifference = function (propName, serverValue, clientValue) {
+      if (didWarnInvalidHydration) {
+        return;
+      }
+
+      var normalizedClientValue = normalizeMarkupForTextOrAttribute(clientValue);
+      var normalizedServerValue = normalizeMarkupForTextOrAttribute(serverValue);
+
+      if (normalizedServerValue === normalizedClientValue) {
+        return;
+      }
+
+      didWarnInvalidHydration = true;
+
+      error('Prop `%s` did not match. Server: %s Client: %s', propName, JSON.stringify(normalizedServerValue), JSON.stringify(normalizedClientValue));
+    };
+
+    warnForExtraAttributes = function (attributeNames) {
+      if (didWarnInvalidHydration) {
+        return;
+      }
+
+      didWarnInvalidHydration = true;
+      var names = [];
+      attributeNames.forEach(function (name) {
+        names.push(name);
+      });
+
+      error('Extra attributes from the server: %s', names);
+    };
+
+    warnForInvalidEventListener = function (registrationName, listener) {
+      if (listener === false) {
+        error('Expected `%s` listener to be a function, instead got `false`.\n\n' + 'If you used to conditionally omit it with %s={condition && value}, ' + 'pass %s={condition ? value : undefined} instead.', registrationName, registrationName, registrationName);
+      } else {
+        error('Expected `%s` listener to be a function, instead got a value of `%s` type.', registrationName, typeof listener);
+      }
+    }; // Parse the HTML and read it back to normalize the HTML string so that it
+    // can be used for comparison.
+
+
+    normalizeHTML = function (parent, html) {
+      // We could have created a separate document here to avoid
+      // re-initializing custom elements if they exist. But this breaks
+      // how <noscript> is being handled. So we use the same document.
+      // See the discussion in https://github.com/facebook/react/pull/11157.
+      var testElement = parent.namespaceURI === HTML_NAMESPACE$1 ? parent.ownerDocument.createElement(parent.tagName) : parent.ownerDocument.createElementNS(parent.namespaceURI, parent.tagName);
+      testElement.innerHTML = html;
+      return testElement.innerHTML;
+    };
+  }
+
+  function ensureListeningTo(rootContainerElement, registrationName) {
+    var isDocumentOrFragment = rootContainerElement.nodeType === DOCUMENT_NODE || rootContainerElement.nodeType === DOCUMENT_FRAGMENT_NODE;
+    var doc = isDocumentOrFragment ? rootContainerElement : rootContainerElement.ownerDocument;
+    legacyListenToEvent(registrationName, doc);
+  }
+
+  function getOwnerDocumentFromRootContainer(rootContainerElement) {
+    return rootContainerElement.nodeType === DOCUMENT_NODE ? rootContainerElement : rootContainerElement.ownerDocument;
+  }
+
+  function noop() {}
+
+  function trapClickOnNonInteractiveElement(node) {
+    // Mobile Safari does not fire properly bubble click events on
+    // non-interactive elements, which means delegated click listeners do not
+    // fire. The workaround for this bug involves attaching an empty click
+    // listener on the target node.
+    // http://www.quirksmode.org/blog/archives/2010/09/click_event_del.html
+    // Just set it using the onclick property so that we don't have to manage any
+    // bookkeeping for it. Not sure if we need to clear it when the listener is
+    // removed.
+    // TODO: Only do this for the relevant Safaris maybe?
+    node.onclick = noop;
+  }
+
+  function setInitialDOMProperties(tag, domElement, rootContainerElement, nextProps, isCustomComponentTag) {
+    for (var propKey in nextProps) {
+      if (!nextProps.hasOwnProperty(propKey)) {
+        continue;
+      }
+
+      var nextProp = nextProps[propKey];
+
+      if (propKey === STYLE) {
+        {
+          if (nextProp) {
+            // Freeze the next style object so that we can assume it won't be
+            // mutated. We have already warned for this in the past.
+            Object.freeze(nextProp);
+          }
+        } // Relies on `updateStylesByID` not mutating `styleUpdates`.
+
+
+        setValueForStyles(domElement, nextProp);
+      } else if (propKey === DANGEROUSLY_SET_INNER_HTML) {
+        var nextHtml = nextProp ? nextProp[HTML$1] : undefined;
+
+        if (nextHtml != null) {
+          setInnerHTML(domElement, nextHtml);
+        }
+      } else if (propKey === CHILDREN) {
+        if (typeof nextProp === 'string') {
+          // Avoid setting initial textContent when the text is empty. In IE11 setting
+          // textContent on a <textarea> will cause the placeholder to not
+          // show within the <textarea> until it has been focused and blurred again.
+          // https://github.com/facebook/react/issues/6731#issuecomment-254874553
+          var canSetTextContent = tag !== 'textarea' || nextProp !== '';
+
+          if (canSetTextContent) {
+            setTextContent(domElement, nextProp);
+          }
+        } else if (typeof nextProp === 'number') {
+          setTextContent(domElement, '' + nextProp);
+        }
+      } else if ( propKey === SUPPRESS_CONTENT_EDITABLE_WARNING || propKey === SUPPRESS_HYDRATION_WARNING) ; else if (propKey === AUTOFOCUS) ; else if (registrationNameModules.hasOwnProperty(propKey)) {
+        if (nextProp != null) {
+          if ( typeof nextProp !== 'function') {
+            warnForInvalidEventListener(propKey, nextProp);
+          }
+
+          ensureListeningTo(rootContainerElement, propKey);
+        }
+      } else if (nextProp != null) {
+        setValueForProperty(domElement, propKey, nextProp, isCustomComponentTag);
+      }
+    }
+  }
+
+  function updateDOMProperties(domElement, updatePayload, wasCustomComponentTag, isCustomComponentTag) {
+    // TODO: Handle wasCustomComponentTag
+    for (var i = 0; i < updatePayload.length; i += 2) {
+      var propKey = updatePayload[i];
+      var propValue = updatePayload[i + 1];
+
+      if (propKey === STYLE) {
+        setValueForStyles(domElement, propValue);
+      } else if (propKey === DANGEROUSLY_SET_INNER_HTML) {
+        setInnerHTML(domElement, propValue);
+      } else if (propKey === CHILDREN) {
+        setTextContent(domElement, propValue);
+      } else {
+        setValueForProperty(domElement, propKey, propValue, isCustomComponentTag);
+      }
+    }
+  }
+
+  function createElement(type, props, rootContainerElement, parentNamespace) {
+    var isCustomComponentTag; // We create tags in the namespace of their parent container, except HTML
+    // tags get no namespace.
+
+    var ownerDocument = getOwnerDocumentFromRootContainer(rootContainerElement);
+    var domElement;
+    var namespaceURI = parentNamespace;
+
+    if (namespaceURI === HTML_NAMESPACE$1) {
+      namespaceURI = getIntrinsicNamespace(type);
+    }
+
+    if (namespaceURI === HTML_NAMESPACE$1) {
+      {
+        isCustomComponentTag = isCustomComponent(type, props); // Should this check be gated by parent namespace? Not sure we want to
+        // allow <SVG> or <mATH>.
+
+        if (!isCustomComponentTag && type !== type.toLowerCase()) {
+          error('<%s /> is using incorrect casing. ' + 'Use PascalCase for React components, ' + 'or lowercase for HTML elements.', type);
+        }
+      }
+
+      if (type === 'script') {
+        // Create the script via .innerHTML so its "parser-inserted" flag is
+        // set to true and it does not execute
+        var div = ownerDocument.createElement('div');
+
+        div.innerHTML = '<script><' + '/script>'; // eslint-disable-line
+        // This is guaranteed to yield a script element.
+
+        var firstChild = div.firstChild;
+        domElement = div.removeChild(firstChild);
+      } else if (typeof props.is === 'string') {
+        // $FlowIssue `createElement` should be updated for Web Components
+        domElement = ownerDocument.createElement(type, {
+          is: props.is
+        });
+      } else {
+        // Separate else branch instead of using `props.is || undefined` above because of a Firefox bug.
+        // See discussion in https://github.com/facebook/react/pull/6896
+        // and discussion in https://bugzilla.mozilla.org/show_bug.cgi?id=1276240
+        domElement = ownerDocument.createElement(type); // Normally attributes are assigned in `setInitialDOMProperties`, however the `multiple` and `size`
+        // attributes on `select`s needs to be added before `option`s are inserted.
+        // This prevents:
+        // - a bug where the `select` does not scroll to the correct option because singular
+        //  `select` elements automatically pick the first item #13222
+        // - a bug where the `select` set the first item as selected despite the `size` attribute #14239
+        // See https://github.com/facebook/react/issues/13222
+        // and https://github.com/facebook/react/issues/14239
+
+        if (type === 'select') {
+          var node = domElement;
+
+          if (props.multiple) {
+            node.multiple = true;
+          } else if (props.size) {
+            // Setting a size greater than 1 causes a select to behave like `multiple=true`, where
+            // it is possible that no option is selected.
+            //
+            // This is only necessary when a select in "single selection mode".
+            node.size = props.size;
+          }
+        }
+      }
+    } else {
+      domElement = ownerDocument.createElementNS(namespaceURI, type);
+    }
+
+    {
+      if (namespaceURI === HTML_NAMESPACE$1) {
+        if (!isCustomComponentTag && Object.prototype.toString.call(domElement) === '[object HTMLUnknownElement]' && !Object.prototype.hasOwnProperty.call(warnedUnknownTags, type)) {
+          warnedUnknownTags[type] = true;
+
+          error('The tag <%s> is unrecognized in this browser. ' + 'If you meant to render a React component, start its name with ' + 'an uppercase letter.', type);
+        }
+      }
+    }
+
+    return domElement;
+  }
+  function createTextNode(text, rootContainerElement) {
+    return getOwnerDocumentFromRootContainer(rootContainerElement).createTextNode(text);
+  }
+  function setInitialProperties(domElement, tag, rawProps, rootContainerElement) {
+    var isCustomComponentTag = isCustomComponent(tag, rawProps);
+
+    {
+      validatePropertiesInDevelopment(tag, rawProps);
+    } // TODO: Make sure that we check isMounted before firing any of these events.
+
+
+    var props;
+
+    switch (tag) {
+      case 'iframe':
+      case 'object':
+      case 'embed':
+        trapBubbledEvent(TOP_LOAD, domElement);
+        props = rawProps;
+        break;
+
+      case 'video':
+      case 'audio':
+        // Create listener for each media event
+        for (var i = 0; i < mediaEventTypes.length; i++) {
+          trapBubbledEvent(mediaEventTypes[i], domElement);
+        }
+
+        props = rawProps;
+        break;
+
+      case 'source':
+        trapBubbledEvent(TOP_ERROR, domElement);
+        props = rawProps;
+        break;
+
+      case 'img':
+      case 'image':
+      case 'link':
+        trapBubbledEvent(TOP_ERROR, domElement);
+        trapBubbledEvent(TOP_LOAD, domElement);
+        props = rawProps;
+        break;
+
+      case 'form':
+        trapBubbledEvent(TOP_RESET, domElement);
+        trapBubbledEvent(TOP_SUBMIT, domElement);
+        props = rawProps;
+        break;
+
+      case 'details':
+        trapBubbledEvent(TOP_TOGGLE, domElement);
+        props = rawProps;
+        break;
+
+      case 'input':
+        initWrapperState(domElement, rawProps);
+        props = getHostProps(domElement, rawProps);
+        trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening
+        // to onChange. Even if there is no listener.
+
+        ensureListeningTo(rootContainerElement, 'onChange');
+        break;
+
+      case 'option':
+        validateProps(domElement, rawProps);
+        props = getHostProps$1(domElement, rawProps);
+        break;
+
+      case 'select':
+        initWrapperState$1(domElement, rawProps);
+        props = getHostProps$2(domElement, rawProps);
+        trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening
+        // to onChange. Even if there is no listener.
+
+        ensureListeningTo(rootContainerElement, 'onChange');
+        break;
+
+      case 'textarea':
+        initWrapperState$2(domElement, rawProps);
+        props = getHostProps$3(domElement, rawProps);
+        trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening
+        // to onChange. Even if there is no listener.
+
+        ensureListeningTo(rootContainerElement, 'onChange');
+        break;
+
+      default:
+        props = rawProps;
+    }
+
+    assertValidProps(tag, props);
+    setInitialDOMProperties(tag, domElement, rootContainerElement, props, isCustomComponentTag);
+
+    switch (tag) {
+      case 'input':
+        // TODO: Make sure we check if this is still unmounted or do any clean
+        // up necessary since we never stop tracking anymore.
+        track(domElement);
+        postMountWrapper(domElement, rawProps, false);
+        break;
+
+      case 'textarea':
+        // TODO: Make sure we check if this is still unmounted or do any clean
+        // up necessary since we never stop tracking anymore.
+        track(domElement);
+        postMountWrapper$3(domElement);
+        break;
+
+      case 'option':
+        postMountWrapper$1(domElement, rawProps);
+        break;
+
+      case 'select':
+        postMountWrapper$2(domElement, rawProps);
+        break;
+
+      default:
+        if (typeof props.onClick === 'function') {
+          // TODO: This cast may not be sound for SVG, MathML or custom elements.
+          trapClickOnNonInteractiveElement(domElement);
+        }
+
+        break;
+    }
+  } // Calculate the diff between the two objects.
+
+  function diffProperties(domElement, tag, lastRawProps, nextRawProps, rootContainerElement) {
+    {
+      validatePropertiesInDevelopment(tag, nextRawProps);
+    }
+
+    var updatePayload = null;
+    var lastProps;
+    var nextProps;
+
+    switch (tag) {
+      case 'input':
+        lastProps = getHostProps(domElement, lastRawProps);
+        nextProps = getHostProps(domElement, nextRawProps);
+        updatePayload = [];
+        break;
+
+      case 'option':
+        lastProps = getHostProps$1(domElement, lastRawProps);
+        nextProps = getHostProps$1(domElement, nextRawProps);
+        updatePayload = [];
+        break;
+
+      case 'select':
+        lastProps = getHostProps$2(domElement, lastRawProps);
+        nextProps = getHostProps$2(domElement, nextRawProps);
+        updatePayload = [];
+        break;
+
+      case 'textarea':
+        lastProps = getHostProps$3(domElement, lastRawProps);
+        nextProps = getHostProps$3(domElement, nextRawProps);
+        updatePayload = [];
+        break;
+
+      default:
+        lastProps = lastRawProps;
+        nextProps = nextRawProps;
+
+        if (typeof lastProps.onClick !== 'function' && typeof nextProps.onClick === 'function') {
+          // TODO: This cast may not be sound for SVG, MathML or custom elements.
+          trapClickOnNonInteractiveElement(domElement);
+        }
+
+        break;
+    }
+
+    assertValidProps(tag, nextProps);
+    var propKey;
+    var styleName;
+    var styleUpdates = null;
+
+    for (propKey in lastProps) {
+      if (nextProps.hasOwnProperty(propKey) || !lastProps.hasOwnProperty(propKey) || lastProps[propKey] == null) {
+        continue;
+      }
+
+      if (propKey === STYLE) {
+        var lastStyle = lastProps[propKey];
+
+        for (styleName in lastStyle) {
+          if (lastStyle.hasOwnProperty(styleName)) {
+            if (!styleUpdates) {
+              styleUpdates = {};
+            }
+
+            styleUpdates[styleName] = '';
+          }
+        }
+      } else if (propKey === DANGEROUSLY_SET_INNER_HTML || propKey === CHILDREN) ; else if ( propKey === SUPPRESS_CONTENT_EDITABLE_WARNING || propKey === SUPPRESS_HYDRATION_WARNING) ; else if (propKey === AUTOFOCUS) ; else if (registrationNameModules.hasOwnProperty(propKey)) {
+        // This is a special case. If any listener updates we need to ensure
+        // that the "current" fiber pointer gets updated so we need a commit
+        // to update this element.
+        if (!updatePayload) {
+          updatePayload = [];
+        }
+      } else {
+        // For all other deleted properties we add it to the queue. We use
+        // the whitelist in the commit phase instead.
+        (updatePayload = updatePayload || []).push(propKey, null);
+      }
+    }
+
+    for (propKey in nextProps) {
+      var nextProp = nextProps[propKey];
+      var lastProp = lastProps != null ? lastProps[propKey] : undefined;
+
+      if (!nextProps.hasOwnProperty(propKey) || nextProp === lastProp || nextProp == null && lastProp == null) {
+        continue;
+      }
+
+      if (propKey === STYLE) {
+        {
+          if (nextProp) {
+            // Freeze the next style object so that we can assume it won't be
+            // mutated. We have already warned for this in the past.
+            Object.freeze(nextProp);
+          }
+        }
+
+        if (lastProp) {
+          // Unset styles on `lastProp` but not on `nextProp`.
+          for (styleName in lastProp) {
+            if (lastProp.hasOwnProperty(styleName) && (!nextProp || !nextProp.hasOwnProperty(styleName))) {
+              if (!styleUpdates) {
+                styleUpdates = {};
+              }
+
+              styleUpdates[styleName] = '';
+            }
+          } // Update styles that changed since `lastProp`.
+
+
+          for (styleName in nextProp) {
+            if (nextProp.hasOwnProperty(styleName) && lastProp[styleName] !== nextProp[styleName]) {
+              if (!styleUpdates) {
+                styleUpdates = {};
+              }
+
+              styleUpdates[styleName] = nextProp[styleName];
+            }
+          }
+        } else {
+          // Relies on `updateStylesByID` not mutating `styleUpdates`.
+          if (!styleUpdates) {
+            if (!updatePayload) {
+              updatePayload = [];
+            }
+
+            updatePayload.push(propKey, styleUpdates);
+          }
+
+          styleUpdates = nextProp;
+        }
+      } else if (propKey === DANGEROUSLY_SET_INNER_HTML) {
+        var nextHtml = nextProp ? nextProp[HTML$1] : undefined;
+        var lastHtml = lastProp ? lastProp[HTML$1] : undefined;
+
+        if (nextHtml != null) {
+          if (lastHtml !== nextHtml) {
+            (updatePayload = updatePayload || []).push(propKey, nextHtml);
+          }
+        }
+      } else if (propKey === CHILDREN) {
+        if (lastProp !== nextProp && (typeof nextProp === 'string' || typeof nextProp === 'number')) {
+          (updatePayload = updatePayload || []).push(propKey, '' + nextProp);
+        }
+      } else if ( propKey === SUPPRESS_CONTENT_EDITABLE_WARNING || propKey === SUPPRESS_HYDRATION_WARNING) ; else if (registrationNameModules.hasOwnProperty(propKey)) {
+        if (nextProp != null) {
+          // We eagerly listen to this even though we haven't committed yet.
+          if ( typeof nextProp !== 'function') {
+            warnForInvalidEventListener(propKey, nextProp);
+          }
+
+          ensureListeningTo(rootContainerElement, propKey);
+        }
+
+        if (!updatePayload && lastProp !== nextProp) {
+          // This is a special case. If any listener updates we need to ensure
+          // that the "current" props pointer gets updated so we need a commit
+          // to update this element.
+          updatePayload = [];
+        }
+      } else {
+        // For any other property we always add it to the queue and then we
+        // filter it out using the whitelist during the commit.
+        (updatePayload = updatePayload || []).push(propKey, nextProp);
+      }
+    }
+
+    if (styleUpdates) {
+      {
+        validateShorthandPropertyCollisionInDev(styleUpdates, nextProps[STYLE]);
+      }
+
+      (updatePayload = updatePayload || []).push(STYLE, styleUpdates);
+    }
+
+    return updatePayload;
+  } // Apply the diff.
+
+  function updateProperties(domElement, updatePayload, tag, lastRawProps, nextRawProps) {
+    // Update checked *before* name.
+    // In the middle of an update, it is possible to have multiple checked.
+    // When a checked radio tries to change name, browser makes another radio's checked false.
+    if (tag === 'input' && nextRawProps.type === 'radio' && nextRawProps.name != null) {
+      updateChecked(domElement, nextRawProps);
+    }
+
+    var wasCustomComponentTag = isCustomComponent(tag, lastRawProps);
+    var isCustomComponentTag = isCustomComponent(tag, nextRawProps); // Apply the diff.
+
+    updateDOMProperties(domElement, updatePayload, wasCustomComponentTag, isCustomComponentTag); // TODO: Ensure that an update gets scheduled if any of the special props
+    // changed.
+
+    switch (tag) {
+      case 'input':
+        // Update the wrapper around inputs *after* updating props. This has to
+        // happen after `updateDOMProperties`. Otherwise HTML5 input validations
+        // raise warnings and prevent the new value from being assigned.
+        updateWrapper(domElement, nextRawProps);
+        break;
+
+      case 'textarea':
+        updateWrapper$1(domElement, nextRawProps);
+        break;
+
+      case 'select':
+        // <select> value update needs to occur after <option> children
+        // reconciliation
+        postUpdateWrapper(domElement, nextRawProps);
+        break;
+    }
+  }
+
+  function getPossibleStandardName(propName) {
+    {
+      var lowerCasedName = propName.toLowerCase();
+
+      if (!possibleStandardNames.hasOwnProperty(lowerCasedName)) {
+        return null;
+      }
+
+      return possibleStandardNames[lowerCasedName] || null;
+    }
+  }
+
+  function diffHydratedProperties(domElement, tag, rawProps, parentNamespace, rootContainerElement) {
+    var isCustomComponentTag;
+    var extraAttributeNames;
+
+    {
+      suppressHydrationWarning = rawProps[SUPPRESS_HYDRATION_WARNING] === true;
+      isCustomComponentTag = isCustomComponent(tag, rawProps);
+      validatePropertiesInDevelopment(tag, rawProps);
+    } // TODO: Make sure that we check isMounted before firing any of these events.
+
+
+    switch (tag) {
+      case 'iframe':
+      case 'object':
+      case 'embed':
+        trapBubbledEvent(TOP_LOAD, domElement);
+        break;
+
+      case 'video':
+      case 'audio':
+        // Create listener for each media event
+        for (var i = 0; i < mediaEventTypes.length; i++) {
+          trapBubbledEvent(mediaEventTypes[i], domElement);
+        }
+
+        break;
+
+      case 'source':
+        trapBubbledEvent(TOP_ERROR, domElement);
+        break;
+
+      case 'img':
+      case 'image':
+      case 'link':
+        trapBubbledEvent(TOP_ERROR, domElement);
+        trapBubbledEvent(TOP_LOAD, domElement);
+        break;
+
+      case 'form':
+        trapBubbledEvent(TOP_RESET, domElement);
+        trapBubbledEvent(TOP_SUBMIT, domElement);
+        break;
+
+      case 'details':
+        trapBubbledEvent(TOP_TOGGLE, domElement);
+        break;
+
+      case 'input':
+        initWrapperState(domElement, rawProps);
+        trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening
+        // to onChange. Even if there is no listener.
+
+        ensureListeningTo(rootContainerElement, 'onChange');
+        break;
+
+      case 'option':
+        validateProps(domElement, rawProps);
+        break;
+
+      case 'select':
+        initWrapperState$1(domElement, rawProps);
+        trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening
+        // to onChange. Even if there is no listener.
+
+        ensureListeningTo(rootContainerElement, 'onChange');
+        break;
+
+      case 'textarea':
+        initWrapperState$2(domElement, rawProps);
+        trapBubbledEvent(TOP_INVALID, domElement); // For controlled components we always need to ensure we're listening
+        // to onChange. Even if there is no listener.
+
+        ensureListeningTo(rootContainerElement, 'onChange');
+        break;
+    }
+
+    assertValidProps(tag, rawProps);
+
+    {
+      extraAttributeNames = new Set();
+      var attributes = domElement.attributes;
+
+      for (var _i = 0; _i < attributes.length; _i++) {
+        var name = attributes[_i].name.toLowerCase();
+
+        switch (name) {
+          // Built-in SSR attribute is whitelisted
+          case 'data-reactroot':
+            break;
+          // Controlled attributes are not validated
+          // TODO: Only ignore them on controlled tags.
+
+          case 'value':
+            break;
+
+          case 'checked':
+            break;
+
+          case 'selected':
+            break;
+
+          default:
+            // Intentionally use the original name.
+            // See discussion in https://github.com/facebook/react/pull/10676.
+            extraAttributeNames.add(attributes[_i].name);
+        }
+      }
+    }
+
+    var updatePayload = null;
+
+    for (var propKey in rawProps) {
+      if (!rawProps.hasOwnProperty(propKey)) {
+        continue;
+      }
+
+      var nextProp = rawProps[propKey];
+
+      if (propKey === CHILDREN) {
+        // For text content children we compare against textContent. This
+        // might match additional HTML that is hidden when we read it using
+        // textContent. E.g. "foo" will match "f<span>oo</span>" but that still
+        // satisfies our requirement. Our requirement is not to produce perfect
+        // HTML and attributes. Ideally we should preserve structure but it's
+        // ok not to if the visible content is still enough to indicate what
+        // even listeners these nodes might be wired up to.
+        // TODO: Warn if there is more than a single textNode as a child.
+        // TODO: Should we use domElement.firstChild.nodeValue to compare?
+        if (typeof nextProp === 'string') {
+          if (domElement.textContent !== nextProp) {
+            if ( !suppressHydrationWarning) {
+              warnForTextDifference(domElement.textContent, nextProp);
+            }
+
+            updatePayload = [CHILDREN, nextProp];
+          }
+        } else if (typeof nextProp === 'number') {
+          if (domElement.textContent !== '' + nextProp) {
+            if ( !suppressHydrationWarning) {
+              warnForTextDifference(domElement.textContent, nextProp);
+            }
+
+            updatePayload = [CHILDREN, '' + nextProp];
+          }
+        }
+      } else if (registrationNameModules.hasOwnProperty(propKey)) {
+        if (nextProp != null) {
+          if ( typeof nextProp !== 'function') {
+            warnForInvalidEventListener(propKey, nextProp);
+          }
+
+          ensureListeningTo(rootContainerElement, propKey);
+        }
+      } else if ( // Convince Flow we've calculated it (it's DEV-only in this method.)
+      typeof isCustomComponentTag === 'boolean') {
+        // Validate that the properties correspond to their expected values.
+        var serverValue = void 0;
+        var propertyInfo = getPropertyInfo(propKey);
+
+        if (suppressHydrationWarning) ; else if ( propKey === SUPPRESS_CONTENT_EDITABLE_WARNING || propKey === SUPPRESS_HYDRATION_WARNING || // Controlled attributes are not validated
+        // TODO: Only ignore them on controlled tags.
+        propKey === 'value' || propKey === 'checked' || propKey === 'selected') ; else if (propKey === DANGEROUSLY_SET_INNER_HTML) {
+          var serverHTML = domElement.innerHTML;
+          var nextHtml = nextProp ? nextProp[HTML$1] : undefined;
+          var expectedHTML = normalizeHTML(domElement, nextHtml != null ? nextHtml : '');
+
+          if (expectedHTML !== serverHTML) {
+            warnForPropDifference(propKey, serverHTML, expectedHTML);
+          }
+        } else if (propKey === STYLE) {
+          // $FlowFixMe - Should be inferred as not undefined.
+          extraAttributeNames.delete(propKey);
+
+          if (canDiffStyleForHydrationWarning) {
+            var expectedStyle = createDangerousStringForStyles(nextProp);
+            serverValue = domElement.getAttribute('style');
+
+            if (expectedStyle !== serverValue) {
+              warnForPropDifference(propKey, serverValue, expectedStyle);
+            }
+          }
+        } else if (isCustomComponentTag) {
+          // $FlowFixMe - Should be inferred as not undefined.
+          extraAttributeNames.delete(propKey.toLowerCase());
+          serverValue = getValueForAttribute(domElement, propKey, nextProp);
+
+          if (nextProp !== serverValue) {
+            warnForPropDifference(propKey, serverValue, nextProp);
+          }
+        } else if (!shouldIgnoreAttribute(propKey, propertyInfo, isCustomComponentTag) && !shouldRemoveAttribute(propKey, nextProp, propertyInfo, isCustomComponentTag)) {
+          var isMismatchDueToBadCasing = false;
+
+          if (propertyInfo !== null) {
+            // $FlowFixMe - Should be inferred as not undefined.
+            extraAttributeNames.delete(propertyInfo.attributeName);
+            serverValue = getValueForProperty(domElement, propKey, nextProp, propertyInfo);
+          } else {
+            var ownNamespace = parentNamespace;
+
+            if (ownNamespace === HTML_NAMESPACE$1) {
+              ownNamespace = getIntrinsicNamespace(tag);
+            }
+
+            if (ownNamespace === HTML_NAMESPACE$1) {
+              // $FlowFixMe - Should be inferred as not undefined.
+              extraAttributeNames.delete(propKey.toLowerCase());
+            } else {
+              var standardName = getPossibleStandardName(propKey);
+
+              if (standardName !== null && standardName !== propKey) {
+                // If an SVG prop is supplied with bad casing, it will
+                // be successfully parsed from HTML, but will produce a mismatch
+                // (and would be incorrectly rendered on the client).
+                // However, we already warn about bad casing elsewhere.
+                // So we'll skip the misleading extra mismatch warning in this case.
+                isMismatchDueToBadCasing = true; // $FlowFixMe - Should be inferred as not undefined.
+
+                extraAttributeNames.delete(standardName);
+              } // $FlowFixMe - Should be inferred as not undefined.
+
+
+              extraAttributeNames.delete(propKey);
+            }
+
+            serverValue = getValueForAttribute(domElement, propKey, nextProp);
+          }
+
+          if (nextProp !== serverValue && !isMismatchDueToBadCasing) {
+            warnForPropDifference(propKey, serverValue, nextProp);
+          }
+        }
+      }
+    }
+
+    {
+      // $FlowFixMe - Should be inferred as not undefined.
+      if (extraAttributeNames.size > 0 && !suppressHydrationWarning) {
+        // $FlowFixMe - Should be inferred as not undefined.
+        warnForExtraAttributes(extraAttributeNames);
+      }
+    }
+
+    switch (tag) {
+      case 'input':
+        // TODO: Make sure we check if this is still unmounted or do any clean
+        // up necessary since we never stop tracking anymore.
+        track(domElement);
+        postMountWrapper(domElement, rawProps, true);
+        break;
+
+      case 'textarea':
+        // TODO: Make sure we check if this is still unmounted or do any clean
+        // up necessary since we never stop tracking anymore.
+        track(domElement);
+        postMountWrapper$3(domElement);
+        break;
+
+      case 'select':
+      case 'option':
+        // For input and textarea we current always set the value property at
+        // post mount to force it to diverge from attributes. However, for
+        // option and select we don't quite do the same thing and select
+        // is not resilient to the DOM state changing so we don't do that here.
+        // TODO: Consider not doing this for input and textarea.
+        break;
+
+      default:
+        if (typeof rawProps.onClick === 'function') {
+          // TODO: This cast may not be sound for SVG, MathML or custom elements.
+          trapClickOnNonInteractiveElement(domElement);
+        }
+
+        break;
+    }
+
+    return updatePayload;
+  }
+  function diffHydratedText(textNode, text) {
+    var isDifferent = textNode.nodeValue !== text;
+    return isDifferent;
+  }
+  function warnForUnmatchedText(textNode, text) {
+    {
+      warnForTextDifference(textNode.nodeValue, text);
+    }
+  }
+  function warnForDeletedHydratableElement(parentNode, child) {
+    {
+      if (didWarnInvalidHydration) {
+        return;
+      }
+
+      didWarnInvalidHydration = true;
+
+      error('Did not expect server HTML to contain a <%s> in <%s>.', child.nodeName.toLowerCase(), parentNode.nodeName.toLowerCase());
+    }
+  }
+  function warnForDeletedHydratableText(parentNode, child) {
+    {
+      if (didWarnInvalidHydration) {
+        return;
+      }
+
+      didWarnInvalidHydration = true;
+
+      error('Did not expect server HTML to contain the text node "%s" in <%s>.', child.nodeValue, parentNode.nodeName.toLowerCase());
+    }
+  }
+  function warnForInsertedHydratedElement(parentNode, tag, props) {
+    {
+      if (didWarnInvalidHydration) {
+        return;
+      }
+
+      didWarnInvalidHydration = true;
+
+      error('Expected server HTML to contain a matching <%s> in <%s>.', tag, parentNode.nodeName.toLowerCase());
+    }
+  }
+  function warnForInsertedHydratedText(parentNode, text) {
+    {
+      if (text === '') {
+        // We expect to insert empty text nodes since they're not represented in
+        // the HTML.
+        // TODO: Remove this special case if we can just avoid inserting empty
+        // text nodes.
+        return;
+      }
+
+      if (didWarnInvalidHydration) {
+        return;
+      }
+
+      didWarnInvalidHydration = true;
+
+      error('Expected server HTML to contain a matching text node for "%s" in <%s>.', text, parentNode.nodeName.toLowerCase());
+    }
+  }
+  function restoreControlledState$3(domElement, tag, props) {
+    switch (tag) {
+      case 'input':
+        restoreControlledState(domElement, props);
+        return;
+
+      case 'textarea':
+        restoreControlledState$2(domElement, props);
+        return;
+
+      case 'select':
+        restoreControlledState$1(domElement, props);
+        return;
+    }
+  }
+
+  function getActiveElement(doc) {
+    doc = doc || (typeof document !== 'undefined' ? document : undefined);
+
+    if (typeof doc === 'undefined') {
+      return null;
+    }
+
+    try {
+      return doc.activeElement || doc.body;
+    } catch (e) {
+      return doc.body;
+    }
+  }
+
+  /**
+   * Given any node return the first leaf node without children.
+   *
+   * @param {DOMElement|DOMTextNode} node
+   * @return {DOMElement|DOMTextNode}
+   */
+
+  function getLeafNode(node) {
+    while (node && node.firstChild) {
+      node = node.firstChild;
+    }
+
+    return node;
+  }
+  /**
+   * Get the next sibling within a container. This will walk up the
+   * DOM if a node's siblings have been exhausted.
+   *
+   * @param {DOMElement|DOMTextNode} node
+   * @return {?DOMElement|DOMTextNode}
+   */
+
+
+  function getSiblingNode(node) {
+    while (node) {
+      if (node.nextSibling) {
+        return node.nextSibling;
+      }
+
+      node = node.parentNode;
+    }
+  }
+  /**
+   * Get object describing the nodes which contain characters at offset.
+   *
+   * @param {DOMElement|DOMTextNode} root
+   * @param {number} offset
+   * @return {?object}
+   */
+
+
+  function getNodeForCharacterOffset(root, offset) {
+    var node = getLeafNode(root);
+    var nodeStart = 0;
+    var nodeEnd = 0;
+
+    while (node) {
+      if (node.nodeType === TEXT_NODE) {
+        nodeEnd = nodeStart + node.textContent.length;
+
+        if (nodeStart <= offset && nodeEnd >= offset) {
+          return {
+            node: node,
+            offset: offset - nodeStart
+          };
+        }
+
+        nodeStart = nodeEnd;
+      }
+
+      node = getLeafNode(getSiblingNode(node));
+    }
+  }
+
+  /**
+   * @param {DOMElement} outerNode
+   * @return {?object}
+   */
+
+  function getOffsets(outerNode) {
+    var ownerDocument = outerNode.ownerDocument;
+    var win = ownerDocument && ownerDocument.defaultView || window;
+    var selection = win.getSelection && win.getSelection();
+
+    if (!selection || selection.rangeCount === 0) {
+      return null;
+    }
+
+    var anchorNode = selection.anchorNode,
+        anchorOffset = selection.anchorOffset,
+        focusNode = selection.focusNode,
+        focusOffset = selection.focusOffset; // In Firefox, anchorNode and focusNode can be "anonymous divs", e.g. the
+    // up/down buttons on an <input type="number">. Anonymous divs do not seem to
+    // expose properties, triggering a "Permission denied error" if any of its
+    // properties are accessed. The only seemingly possible way to avoid erroring
+    // is to access a property that typically works for non-anonymous divs and
+    // catch any error that may otherwise arise. See
+    // https://bugzilla.mozilla.org/show_bug.cgi?id=208427
+
+    try {
+      /* eslint-disable no-unused-expressions */
+      anchorNode.nodeType;
+      focusNode.nodeType;
+      /* eslint-enable no-unused-expressions */
+    } catch (e) {
+      return null;
+    }
+
+    return getModernOffsetsFromPoints(outerNode, anchorNode, anchorOffset, focusNode, focusOffset);
+  }
+  /**
+   * Returns {start, end} where `start` is the character/codepoint index of
+   * (anchorNode, anchorOffset) within the textContent of `outerNode`, and
+   * `end` is the index of (focusNode, focusOffset).
+   *
+   * Returns null if you pass in garbage input but we should probably just crash.
+   *
+   * Exported only for testing.
+   */
+
+  function getModernOffsetsFromPoints(outerNode, anchorNode, anchorOffset, focusNode, focusOffset) {
+    var length = 0;
+    var start = -1;
+    var end = -1;
+    var indexWithinAnchor = 0;
+    var indexWithinFocus = 0;
+    var node = outerNode;
+    var parentNode = null;
+
+    outer: while (true) {
+      var next = null;
+
+      while (true) {
+        if (node === anchorNode && (anchorOffset === 0 || node.nodeType === TEXT_NODE)) {
+          start = length + anchorOffset;
+        }
+
+        if (node === focusNode && (focusOffset === 0 || node.nodeType === TEXT_NODE)) {
+          end = length + focusOffset;
+        }
+
+        if (node.nodeType === TEXT_NODE) {
+          length += node.nodeValue.length;
+        }
+
+        if ((next = node.firstChild) === null) {
+          break;
+        } // Moving from `node` to its first child `next`.
+
+
+        parentNode = node;
+        node = next;
+      }
+
+      while (true) {
+        if (node === outerNode) {
+          // If `outerNode` has children, this is always the second time visiting
+          // it. If it has no children, this is still the first loop, and the only
+          // valid selection is anchorNode and focusNode both equal to this node
+          // and both offsets 0, in which case we will have handled above.
+          break outer;
+        }
+
+        if (parentNode === anchorNode && ++indexWithinAnchor === anchorOffset) {
+          start = length;
+        }
+
+        if (parentNode === focusNode && ++indexWithinFocus === focusOffset) {
+          end = length;
+        }
+
+        if ((next = node.nextSibling) !== null) {
+          break;
+        }
+
+        node = parentNode;
+        parentNode = node.parentNode;
+      } // Moving from `node` to its next sibling `next`.
+
+
+      node = next;
+    }
+
+    if (start === -1 || end === -1) {
+      // This should never happen. (Would happen if the anchor/focus nodes aren't
+      // actually inside the passed-in node.)
+      return null;
+    }
+
+    return {
+      start: start,
+      end: end
+    };
+  }
+  /**
+   * In modern non-IE browsers, we can support both forward and backward
+   * selections.
+   *
+   * Note: IE10+ supports the Selection object, but it does not support
+   * the `extend` method, which means that even in modern IE, it's not possible
+   * to programmatically create a backward selection. Thus, for all IE
+   * versions, we use the old IE API to create our selections.
+   *
+   * @param {DOMElement|DOMTextNode} node
+   * @param {object} offsets
+   */
+
+  function setOffsets(node, offsets) {
+    var doc = node.ownerDocument || document;
+    var win = doc && doc.defaultView || window; // Edge fails with "Object expected" in some scenarios.
+    // (For instance: TinyMCE editor used in a list component that supports pasting to add more,
+    // fails when pasting 100+ items)
+
+    if (!win.getSelection) {
+      return;
+    }
+
+    var selection = win.getSelection();
+    var length = node.textContent.length;
+    var start = Math.min(offsets.start, length);
+    var end = offsets.end === undefined ? start : Math.min(offsets.end, length); // IE 11 uses modern selection, but doesn't support the extend method.
+    // Flip backward selections, so we can set with a single range.
+
+    if (!selection.extend && start > end) {
+      var temp = end;
+      end = start;
+      start = temp;
+    }
+
+    var startMarker = getNodeForCharacterOffset(node, start);
+    var endMarker = getNodeForCharacterOffset(node, end);
+
+    if (startMarker && endMarker) {
+      if (selection.rangeCount === 1 && selection.anchorNode === startMarker.node && selection.anchorOffset === startMarker.offset && selection.focusNode === endMarker.node && selection.focusOffset === endMarker.offset) {
+        return;
+      }
+
+      var range = doc.createRange();
+      range.setStart(startMarker.node, startMarker.offset);
+      selection.removeAllRanges();
+
+      if (start > end) {
+        selection.addRange(range);
+        selection.extend(endMarker.node, endMarker.offset);
+      } else {
+        range.setEnd(endMarker.node, endMarker.offset);
+        selection.addRange(range);
+      }
+    }
+  }
+
+  function isTextNode(node) {
+    return node && node.nodeType === TEXT_NODE;
+  }
+
+  function containsNode(outerNode, innerNode) {
+    if (!outerNode || !innerNode) {
+      return false;
+    } else if (outerNode === innerNode) {
+      return true;
+    } else if (isTextNode(outerNode)) {
+      return false;
+    } else if (isTextNode(innerNode)) {
+      return containsNode(outerNode, innerNode.parentNode);
+    } else if ('contains' in outerNode) {
+      return outerNode.contains(innerNode);
+    } else if (outerNode.compareDocumentPosition) {
+      return !!(outerNode.compareDocumentPosition(innerNode) & 16);
+    } else {
+      return false;
+    }
+  }
+
+  function isInDocument(node) {
+    return node && node.ownerDocument && containsNode(node.ownerDocument.documentElement, node);
+  }
+
+  function isSameOriginFrame(iframe) {
+    try {
+      // Accessing the contentDocument of a HTMLIframeElement can cause the browser
+      // to throw, e.g. if it has a cross-origin src attribute.
+      // Safari will show an error in the console when the access results in "Blocked a frame with origin". e.g:
+      // iframe.contentDocument.defaultView;
+      // A safety way is to access one of the cross origin properties: Window or Location
+      // Which might result in "SecurityError" DOM Exception and it is compatible to Safari.
+      // https://html.spec.whatwg.org/multipage/browsers.html#integration-with-idl
+      return typeof iframe.contentWindow.location.href === 'string';
+    } catch (err) {
+      return false;
+    }
+  }
+
+  function getActiveElementDeep() {
+    var win = window;
+    var element = getActiveElement();
+
+    while (element instanceof win.HTMLIFrameElement) {
+      if (isSameOriginFrame(element)) {
+        win = element.contentWindow;
+      } else {
+        return element;
+      }
+
+      element = getActiveElement(win.document);
+    }
+
+    return element;
+  }
+  /**
+   * @ReactInputSelection: React input selection module. Based on Selection.js,
+   * but modified to be suitable for react and has a couple of bug fixes (doesn't
+   * assume buttons have range selections allowed).
+   * Input selection module for React.
+   */
+
+  /**
+   * @hasSelectionCapabilities: we get the element types that support selection
+   * from https://html.spec.whatwg.org/#do-not-apply, looking at `selectionStart`
+   * and `selectionEnd` rows.
+   */
+
+
+  function hasSelectionCapabilities(elem) {
+    var nodeName = elem && elem.nodeName && elem.nodeName.toLowerCase();
+    return nodeName && (nodeName === 'input' && (elem.type === 'text' || elem.type === 'search' || elem.type === 'tel' || elem.type === 'url' || elem.type === 'password') || nodeName === 'textarea' || elem.contentEditable === 'true');
+  }
+  function getSelectionInformation() {
+    var focusedElem = getActiveElementDeep();
+    return {
+      // Used by Flare
+      activeElementDetached: null,
+      focusedElem: focusedElem,
+      selectionRange: hasSelectionCapabilities(focusedElem) ? getSelection(focusedElem) : null
+    };
+  }
+  /**
+   * @restoreSelection: If any selection information was potentially lost,
+   * restore it. This is useful when performing operations that could remove dom
+   * nodes and place them back in, resulting in focus being lost.
+   */
+
+  function restoreSelection(priorSelectionInformation) {
+    var curFocusedElem = getActiveElementDeep();
+    var priorFocusedElem = priorSelectionInformation.focusedElem;
+    var priorSelectionRange = priorSelectionInformation.selectionRange;
+
+    if (curFocusedElem !== priorFocusedElem && isInDocument(priorFocusedElem)) {
+      if (priorSelectionRange !== null && hasSelectionCapabilities(priorFocusedElem)) {
+        setSelection(priorFocusedElem, priorSelectionRange);
+      } // Focusing a node can change the scroll position, which is undesirable
+
+
+      var ancestors = [];
+      var ancestor = priorFocusedElem;
+
+      while (ancestor = ancestor.parentNode) {
+        if (ancestor.nodeType === ELEMENT_NODE) {
+          ancestors.push({
+            element: ancestor,
+            left: ancestor.scrollLeft,
+            top: ancestor.scrollTop
+          });
+        }
+      }
+
+      if (typeof priorFocusedElem.focus === 'function') {
+        priorFocusedElem.focus();
+      }
+
+      for (var i = 0; i < ancestors.length; i++) {
+        var info = ancestors[i];
+        info.element.scrollLeft = info.left;
+        info.element.scrollTop = info.top;
+      }
+    }
+  }
+  /**
+   * @getSelection: Gets the selection bounds of a focused textarea, input or
+   * contentEditable node.
+   * -@input: Look up selection bounds of this input
+   * -@return {start: selectionStart, end: selectionEnd}
+   */
+
+  function getSelection(input) {
+    var selection;
+
+    if ('selectionStart' in input) {
+      // Modern browser with input or textarea.
+      selection = {
+        start: input.selectionStart,
+        end: input.selectionEnd
+      };
+    } else {
+      // Content editable or old IE textarea.
+      selection = getOffsets(input);
+    }
+
+    return selection || {
+      start: 0,
+      end: 0
+    };
+  }
+  /**
+   * @setSelection: Sets the selection bounds of a textarea or input and focuses
+   * the input.
+   * -@input     Set selection bounds of this input or textarea
+   * -@offsets   Object of same form that is returned from get*
+   */
+
+  function setSelection(input, offsets) {
+    var start = offsets.start,
+        end = offsets.end;
+
+    if (end === undefined) {
+      end = start;
+    }
+
+    if ('selectionStart' in input) {
+      input.selectionStart = start;
+      input.selectionEnd = Math.min(end, input.value.length);
+    } else {
+      setOffsets(input, offsets);
+    }
+  }
+
+  var validateDOMNesting = function () {};
+
+  var updatedAncestorInfo = function () {};
+
+  {
+    // This validation code was written based on the HTML5 parsing spec:
+    // https://html.spec.whatwg.org/multipage/syntax.html#has-an-element-in-scope
+    //
+    // Note: this does not catch all invalid nesting, nor does it try to (as it's
+    // not clear what practical benefit doing so provides); instead, we warn only
+    // for cases where the parser will give a parse tree differing from what React
+    // intended. For example, <b><div></div></b> is invalid but we don't warn
+    // because it still parses correctly; we do warn for other cases like nested
+    // <p> tags where the beginning of the second element implicitly closes the
+    // first, causing a confusing mess.
+    // https://html.spec.whatwg.org/multipage/syntax.html#special
+    var specialTags = ['address', 'applet', 'area', 'article', 'aside', 'base', 'basefont', 'bgsound', 'blockquote', 'body', 'br', 'button', 'caption', 'center', 'col', 'colgroup', 'dd', 'details', 'dir', 'div', 'dl', 'dt', 'embed', 'fieldset', 'figcaption', 'figure', 'footer', 'form', 'frame', 'frameset', 'h1', 'h2', 'h3', 'h4', 'h5', 'h6', 'head', 'header', 'hgroup', 'hr', 'html', 'iframe', 'img', 'input', 'isindex', 'li', 'link', 'listing', 'main', 'marquee', 'menu', 'menuitem', 'meta', 'nav', 'noembed', 'noframes', 'noscript', 'object', 'ol', 'p', 'param', 'plaintext', 'pre', 'script', 'section', 'select', 'source', 'style', 'summary', 'table', 'tbody', 'td', 'template', 'textarea', 'tfoot', 'th', 'thead', 'title', 'tr', 'track', 'ul', 'wbr', 'xmp']; // https://html.spec.whatwg.org/multipage/syntax.html#has-an-element-in-scope
+
+    var inScopeTags = ['applet', 'caption', 'html', 'table', 'td', 'th', 'marquee', 'object', 'template', // https://html.spec.whatwg.org/multipage/syntax.html#html-integration-point
+    // TODO: Distinguish by namespace here -- for <title>, including it here
+    // errs on the side of fewer warnings
+    'foreignObject', 'desc', 'title']; // https://html.spec.whatwg.org/multipage/syntax.html#has-an-element-in-button-scope
+
+    var buttonScopeTags = inScopeTags.concat(['button']); // https://html.spec.whatwg.org/multipage/syntax.html#generate-implied-end-tags
+
+    var impliedEndTags = ['dd', 'dt', 'li', 'option', 'optgroup', 'p', 'rp', 'rt'];
+    var emptyAncestorInfo = {
+      current: null,
+      formTag: null,
+      aTagInScope: null,
+      buttonTagInScope: null,
+      nobrTagInScope: null,
+      pTagInButtonScope: null,
+      listItemTagAutoclosing: null,
+      dlItemTagAutoclosing: null
+    };
+
+    updatedAncestorInfo = function (oldInfo, tag) {
+      var ancestorInfo = _assign({}, oldInfo || emptyAncestorInfo);
+
+      var info = {
+        tag: tag
+      };
+
+      if (inScopeTags.indexOf(tag) !== -1) {
+        ancestorInfo.aTagInScope = null;
+        ancestorInfo.buttonTagInScope = null;
+        ancestorInfo.nobrTagInScope = null;
+      }
+
+      if (buttonScopeTags.indexOf(tag) !== -1) {
+        ancestorInfo.pTagInButtonScope = null;
+      } // See rules for 'li', 'dd', 'dt' start tags in
+      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inbody
+
+
+      if (specialTags.indexOf(tag) !== -1 && tag !== 'address' && tag !== 'div' && tag !== 'p') {
+        ancestorInfo.listItemTagAutoclosing = null;
+        ancestorInfo.dlItemTagAutoclosing = null;
+      }
+
+      ancestorInfo.current = info;
+
+      if (tag === 'form') {
+        ancestorInfo.formTag = info;
+      }
+
+      if (tag === 'a') {
+        ancestorInfo.aTagInScope = info;
+      }
+
+      if (tag === 'button') {
+        ancestorInfo.buttonTagInScope = info;
+      }
+
+      if (tag === 'nobr') {
+        ancestorInfo.nobrTagInScope = info;
+      }
+
+      if (tag === 'p') {
+        ancestorInfo.pTagInButtonScope = info;
+      }
+
+      if (tag === 'li') {
+        ancestorInfo.listItemTagAutoclosing = info;
+      }
+
+      if (tag === 'dd' || tag === 'dt') {
+        ancestorInfo.dlItemTagAutoclosing = info;
+      }
+
+      return ancestorInfo;
+    };
+    /**
+     * Returns whether
+     */
+
+
+    var isTagValidWithParent = function (tag, parentTag) {
+      // First, let's check if we're in an unusual parsing mode...
+      switch (parentTag) {
+        // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inselect
+        case 'select':
+          return tag === 'option' || tag === 'optgroup' || tag === '#text';
+
+        case 'optgroup':
+          return tag === 'option' || tag === '#text';
+        // Strictly speaking, seeing an <option> doesn't mean we're in a <select>
+        // but
+
+        case 'option':
+          return tag === '#text';
+        // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-intd
+        // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-incaption
+        // No special behavior since these rules fall back to "in body" mode for
+        // all except special table nodes which cause bad parsing behavior anyway.
+        // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-intr
+
+        case 'tr':
+          return tag === 'th' || tag === 'td' || tag === 'style' || tag === 'script' || tag === 'template';
+        // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-intbody
+
+        case 'tbody':
+        case 'thead':
+        case 'tfoot':
+          return tag === 'tr' || tag === 'style' || tag === 'script' || tag === 'template';
+        // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-incolgroup
+
+        case 'colgroup':
+          return tag === 'col' || tag === 'template';
+        // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-intable
+
+        case 'table':
+          return tag === 'caption' || tag === 'colgroup' || tag === 'tbody' || tag === 'tfoot' || tag === 'thead' || tag === 'style' || tag === 'script' || tag === 'template';
+        // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inhead
+
+        case 'head':
+          return tag === 'base' || tag === 'basefont' || tag === 'bgsound' || tag === 'link' || tag === 'meta' || tag === 'title' || tag === 'noscript' || tag === 'noframes' || tag === 'style' || tag === 'script' || tag === 'template';
+        // https://html.spec.whatwg.org/multipage/semantics.html#the-html-element
+
+        case 'html':
+          return tag === 'head' || tag === 'body' || tag === 'frameset';
+
+        case 'frameset':
+          return tag === 'frame';
+
+        case '#document':
+          return tag === 'html';
+      } // Probably in the "in body" parsing mode, so we outlaw only tag combos
+      // where the parsing rules cause implicit opens or closes to be added.
+      // https://html.spec.whatwg.org/multipage/syntax.html#parsing-main-inbody
+
+
+      switch (tag) {
+        case 'h1':
+        case 'h2':
+        case 'h3':
+        case 'h4':
+        case 'h5':
+        case 'h6':
+          return parentTag !== 'h1' && parentTag !== 'h2' && parentTag !== 'h3' && parentTag !== 'h4' && parentTag !== 'h5' && parentTag !== 'h6';
+
+        case 'rp':
+        case 'rt':
+          return impliedEndTags.indexOf(parentTag) === -1;
+
+        case 'body':
+        case 'caption':
+        case 'col':
+        case 'colgroup':
+        case 'frameset':
+        case 'frame':
+        case 'head':
+        case 'html':
+        case 'tbody':
+        case 'td':
+        case 'tfoot':
+        case 'th':
+        case 'thead':
+        case 'tr':
+          // These tags are only valid with a few parents that have special child
+          // parsing rules -- if we're down here, then none of those matched and
+          // so we allow it only if we don't know what the parent is, as all other
+          // cases are invalid.
+          return parentTag == null;
+      }
+
+      return true;
+    };
+    /**
+     * Returns whether
+     */
+
+
+    var findInvalidAncestorForTag = function (tag, ancestorInfo) {
+      switch (tag) {
+        case 'address':
+        case 'article':
+        case 'aside':
+        case 'blockquote':
+        case 'center':
+        case 'details':
+        case 'dialog':
+        case 'dir':
+        case 'div':
+        case 'dl':
+        case 'fieldset':
+        case 'figcaption':
+        case 'figure':
+        case 'footer':
+        case 'header':
+        case 'hgroup':
+        case 'main':
+        case 'menu':
+        case 'nav':
+        case 'ol':
+        case 'p':
+        case 'section':
+        case 'summary':
+        case 'ul':
+        case 'pre':
+        case 'listing':
+        case 'table':
+        case 'hr':
+        case 'xmp':
+        case 'h1':
+        case 'h2':
+        case 'h3':
+        case 'h4':
+        case 'h5':
+        case 'h6':
+          return ancestorInfo.pTagInButtonScope;
+
+        case 'form':
+          return ancestorInfo.formTag || ancestorInfo.pTagInButtonScope;
+
+        case 'li':
+          return ancestorInfo.listItemTagAutoclosing;
+
+        case 'dd':
+        case 'dt':
+          return ancestorInfo.dlItemTagAutoclosing;
+
+        case 'button':
+          return ancestorInfo.buttonTagInScope;
+
+        case 'a':
+          // Spec says something about storing a list of markers, but it sounds
+          // equivalent to this check.
+          return ancestorInfo.aTagInScope;
+
+        case 'nobr':
+          return ancestorInfo.nobrTagInScope;
+      }
+
+      return null;
+    };
+
+    var didWarn$1 = {};
+
+    validateDOMNesting = function (childTag, childText, ancestorInfo) {
+      ancestorInfo = ancestorInfo || emptyAncestorInfo;
+      var parentInfo = ancestorInfo.current;
+      var parentTag = parentInfo && parentInfo.tag;
+
+      if (childText != null) {
+        if (childTag != null) {
+          error('validateDOMNesting: when childText is passed, childTag should be null');
+        }
+
+        childTag = '#text';
+      }
+
+      var invalidParent = isTagValidWithParent(childTag, parentTag) ? null : parentInfo;
+      var invalidAncestor = invalidParent ? null : findInvalidAncestorForTag(childTag, ancestorInfo);
+      var invalidParentOrAncestor = invalidParent || invalidAncestor;
+
+      if (!invalidParentOrAncestor) {
+        return;
+      }
+
+      var ancestorTag = invalidParentOrAncestor.tag;
+      var addendum = getCurrentFiberStackInDev();
+      var warnKey = !!invalidParent + '|' + childTag + '|' + ancestorTag + '|' + addendum;
+
+      if (didWarn$1[warnKey]) {
+        return;
+      }
+
+      didWarn$1[warnKey] = true;
+      var tagDisplayName = childTag;
+      var whitespaceInfo = '';
+
+      if (childTag === '#text') {
+        if (/\S/.test(childText)) {
+          tagDisplayName = 'Text nodes';
+        } else {
+          tagDisplayName = 'Whitespace text nodes';
+          whitespaceInfo = " Make sure you don't have any extra whitespace between tags on " + 'each line of your source code.';
+        }
+      } else {
+        tagDisplayName = '<' + childTag + '>';
+      }
+
+      if (invalidParent) {
+        var info = '';
+
+        if (ancestorTag === 'table' && childTag === 'tr') {
+          info += ' Add a <tbody>, <thead> or <tfoot> to your code to match the DOM tree generated by ' + 'the browser.';
+        }
+
+        error('validateDOMNesting(...): %s cannot appear as a child of <%s>.%s%s', tagDisplayName, ancestorTag, whitespaceInfo, info);
+      } else {
+        error('validateDOMNesting(...): %s cannot appear as a descendant of ' + '<%s>.', tagDisplayName, ancestorTag);
+      }
+    };
+  }
+
+  var SUPPRESS_HYDRATION_WARNING$1;
+
+  {
+    SUPPRESS_HYDRATION_WARNING$1 = 'suppressHydrationWarning';
+  }
+
+  var SUSPENSE_START_DATA = '$';
+  var SUSPENSE_END_DATA = '/$';
+  var SUSPENSE_PENDING_START_DATA = '$?';
+  var SUSPENSE_FALLBACK_START_DATA = '$!';
+  var STYLE$1 = 'style';
+  var eventsEnabled = null;
+  var selectionInformation = null;
+
+  function shouldAutoFocusHostComponent(type, props) {
+    switch (type) {
+      case 'button':
+      case 'input':
+      case 'select':
+      case 'textarea':
+        return !!props.autoFocus;
+    }
+
+    return false;
+  }
+  function getRootHostContext(rootContainerInstance) {
+    var type;
+    var namespace;
+    var nodeType = rootContainerInstance.nodeType;
+
+    switch (nodeType) {
+      case DOCUMENT_NODE:
+      case DOCUMENT_FRAGMENT_NODE:
+        {
+          type = nodeType === DOCUMENT_NODE ? '#document' : '#fragment';
+          var root = rootContainerInstance.documentElement;
+          namespace = root ? root.namespaceURI : getChildNamespace(null, '');
+          break;
+        }
+
+      default:
+        {
+          var container = nodeType === COMMENT_NODE ? rootContainerInstance.parentNode : rootContainerInstance;
+          var ownNamespace = container.namespaceURI || null;
+          type = container.tagName;
+          namespace = getChildNamespace(ownNamespace, type);
+          break;
+        }
+    }
+
+    {
+      var validatedTag = type.toLowerCase();
+      var ancestorInfo = updatedAncestorInfo(null, validatedTag);
+      return {
+        namespace: namespace,
+        ancestorInfo: ancestorInfo
+      };
+    }
+  }
+  function getChildHostContext(parentHostContext, type, rootContainerInstance) {
+    {
+      var parentHostContextDev = parentHostContext;
+      var namespace = getChildNamespace(parentHostContextDev.namespace, type);
+      var ancestorInfo = updatedAncestorInfo(parentHostContextDev.ancestorInfo, type);
+      return {
+        namespace: namespace,
+        ancestorInfo: ancestorInfo
+      };
+    }
+  }
+  function getPublicInstance(instance) {
+    return instance;
+  }
+  function prepareForCommit(containerInfo) {
+    eventsEnabled = isEnabled();
+    selectionInformation = getSelectionInformation();
+    setEnabled(false);
+  }
+  function resetAfterCommit(containerInfo) {
+    restoreSelection(selectionInformation);
+    setEnabled(eventsEnabled);
+    eventsEnabled = null;
+
+    selectionInformation = null;
+  }
+  function createInstance(type, props, rootContainerInstance, hostContext, internalInstanceHandle) {
+    var parentNamespace;
+
+    {
+      // TODO: take namespace into account when validating.
+      var hostContextDev = hostContext;
+      validateDOMNesting(type, null, hostContextDev.ancestorInfo);
+
+      if (typeof props.children === 'string' || typeof props.children === 'number') {
+        var string = '' + props.children;
+        var ownAncestorInfo = updatedAncestorInfo(hostContextDev.ancestorInfo, type);
+        validateDOMNesting(null, string, ownAncestorInfo);
+      }
+
+      parentNamespace = hostContextDev.namespace;
+    }
+
+    var domElement = createElement(type, props, rootContainerInstance, parentNamespace);
+    precacheFiberNode(internalInstanceHandle, domElement);
+    updateFiberProps(domElement, props);
+    return domElement;
+  }
+  function appendInitialChild(parentInstance, child) {
+    parentInstance.appendChild(child);
+  }
+  function finalizeInitialChildren(domElement, type, props, rootContainerInstance, hostContext) {
+    setInitialProperties(domElement, type, props, rootContainerInstance);
+    return shouldAutoFocusHostComponent(type, props);
+  }
+  function prepareUpdate(domElement, type, oldProps, newProps, rootContainerInstance, hostContext) {
+    {
+      var hostContextDev = hostContext;
+
+      if (typeof newProps.children !== typeof oldProps.children && (typeof newProps.children === 'string' || typeof newProps.children === 'number')) {
+        var string = '' + newProps.children;
+        var ownAncestorInfo = updatedAncestorInfo(hostContextDev.ancestorInfo, type);
+        validateDOMNesting(null, string, ownAncestorInfo);
+      }
+    }
+
+    return diffProperties(domElement, type, oldProps, newProps, rootContainerInstance);
+  }
+  function shouldSetTextContent(type, props) {
+    return type === 'textarea' || type === 'option' || type === 'noscript' || typeof props.children === 'string' || typeof props.children === 'number' || typeof props.dangerouslySetInnerHTML === 'object' && props.dangerouslySetInnerHTML !== null && props.dangerouslySetInnerHTML.__html != null;
+  }
+  function shouldDeprioritizeSubtree(type, props) {
+    return !!props.hidden;
+  }
+  function createTextInstance(text, rootContainerInstance, hostContext, internalInstanceHandle) {
+    {
+      var hostContextDev = hostContext;
+      validateDOMNesting(null, text, hostContextDev.ancestorInfo);
+    }
+
+    var textNode = createTextNode(text, rootContainerInstance);
+    precacheFiberNode(internalInstanceHandle, textNode);
+    return textNode;
+  }
+  // if a component just imports ReactDOM (e.g. for findDOMNode).
+  // Some environments might not have setTimeout or clearTimeout.
+
+  var scheduleTimeout = typeof setTimeout === 'function' ? setTimeout : undefined;
+  var cancelTimeout = typeof clearTimeout === 'function' ? clearTimeout : undefined;
+  var noTimeout = -1; // -------------------
+  function commitMount(domElement, type, newProps, internalInstanceHandle) {
+    // Despite the naming that might imply otherwise, this method only
+    // fires if there is an `Update` effect scheduled during mounting.
+    // This happens if `finalizeInitialChildren` returns `true` (which it
+    // does to implement the `autoFocus` attribute on the client). But
+    // there are also other cases when this might happen (such as patching
+    // up text content during hydration mismatch). So we'll check this again.
+    if (shouldAutoFocusHostComponent(type, newProps)) {
+      domElement.focus();
+    }
+  }
+  function commitUpdate(domElement, updatePayload, type, oldProps, newProps, internalInstanceHandle) {
+    // Update the props handle so that we know which props are the ones with
+    // with current event handlers.
+    updateFiberProps(domElement, newProps); // Apply the diff to the DOM node.
+
+    updateProperties(domElement, updatePayload, type, oldProps, newProps);
+  }
+  function resetTextContent(domElement) {
+    setTextContent(domElement, '');
+  }
+  function commitTextUpdate(textInstance, oldText, newText) {
+    textInstance.nodeValue = newText;
+  }
+  function appendChild(parentInstance, child) {
+    parentInstance.appendChild(child);
+  }
+  function appendChildToContainer(container, child) {
+    var parentNode;
+
+    if (container.nodeType === COMMENT_NODE) {
+      parentNode = container.parentNode;
+      parentNode.insertBefore(child, container);
+    } else {
+      parentNode = container;
+      parentNode.appendChild(child);
+    } // This container might be used for a portal.
+    // If something inside a portal is clicked, that click should bubble
+    // through the React tree. However, on Mobile Safari the click would
+    // never bubble through the *DOM* tree unless an ancestor with onclick
+    // event exists. So we wouldn't see it and dispatch it.
+    // This is why we ensure that non React root containers have inline onclick
+    // defined.
+    // https://github.com/facebook/react/issues/11918
+
+
+    var reactRootContainer = container._reactRootContainer;
+
+    if ((reactRootContainer === null || reactRootContainer === undefined) && parentNode.onclick === null) {
+      // TODO: This cast may not be sound for SVG, MathML or custom elements.
+      trapClickOnNonInteractiveElement(parentNode);
+    }
+  }
+  function insertBefore(parentInstance, child, beforeChild) {
+    parentInstance.insertBefore(child, beforeChild);
+  }
+  function insertInContainerBefore(container, child, beforeChild) {
+    if (container.nodeType === COMMENT_NODE) {
+      container.parentNode.insertBefore(child, beforeChild);
+    } else {
+      container.insertBefore(child, beforeChild);
+    }
+  }
+  function removeChild(parentInstance, child) {
+    parentInstance.removeChild(child);
+  }
+  function removeChildFromContainer(container, child) {
+    if (container.nodeType === COMMENT_NODE) {
+      container.parentNode.removeChild(child);
+    } else {
+      container.removeChild(child);
+    }
+  }
+
+  function hideInstance(instance) {
+    // pass host context to this method?
+
+
+    instance = instance;
+    var style = instance.style;
+
+    if (typeof style.setProperty === 'function') {
+      style.setProperty('display', 'none', 'important');
+    } else {
+      style.display = 'none';
+    }
+  }
+  function hideTextInstance(textInstance) {
+    textInstance.nodeValue = '';
+  }
+  function unhideInstance(instance, props) {
+    instance = instance;
+    var styleProp = props[STYLE$1];
+    var display = styleProp !== undefined && styleProp !== null && styleProp.hasOwnProperty('display') ? styleProp.display : null;
+    instance.style.display = dangerousStyleValue('display', display);
+  }
+  function unhideTextInstance(textInstance, text) {
+    textInstance.nodeValue = text;
+  } // -------------------
+  function canHydrateInstance(instance, type, props) {
+    if (instance.nodeType !== ELEMENT_NODE || type.toLowerCase() !== instance.nodeName.toLowerCase()) {
+      return null;
+    } // This has now been refined to an element node.
+
+
+    return instance;
+  }
+  function canHydrateTextInstance(instance, text) {
+    if (text === '' || instance.nodeType !== TEXT_NODE) {
+      // Empty strings are not parsed by HTML so there won't be a correct match here.
+      return null;
+    } // This has now been refined to a text node.
+
+
+    return instance;
+  }
+  function isSuspenseInstancePending(instance) {
+    return instance.data === SUSPENSE_PENDING_START_DATA;
+  }
+  function isSuspenseInstanceFallback(instance) {
+    return instance.data === SUSPENSE_FALLBACK_START_DATA;
+  }
+
+  function getNextHydratable(node) {
+    // Skip non-hydratable nodes.
+    for (; node != null; node = node.nextSibling) {
+      var nodeType = node.nodeType;
+
+      if (nodeType === ELEMENT_NODE || nodeType === TEXT_NODE) {
+        break;
+      }
+    }
+
+    return node;
+  }
+
+  function getNextHydratableSibling(instance) {
+    return getNextHydratable(instance.nextSibling);
+  }
+  function getFirstHydratableChild(parentInstance) {
+    return getNextHydratable(parentInstance.firstChild);
+  }
+  function hydrateInstance(instance, type, props, rootContainerInstance, hostContext, internalInstanceHandle) {
+    precacheFiberNode(internalInstanceHandle, instance); // TODO: Possibly defer this until the commit phase where all the events
+    // get attached.
+
+    updateFiberProps(instance, props);
+    var parentNamespace;
+
+    {
+      var hostContextDev = hostContext;
+      parentNamespace = hostContextDev.namespace;
+    }
+
+    return diffHydratedProperties(instance, type, props, parentNamespace, rootContainerInstance);
+  }
+  function hydrateTextInstance(textInstance, text, internalInstanceHandle) {
+    precacheFiberNode(internalInstanceHandle, textInstance);
+    return diffHydratedText(textInstance, text);
+  }
+  function getNextHydratableInstanceAfterSuspenseInstance(suspenseInstance) {
+    var node = suspenseInstance.nextSibling; // Skip past all nodes within this suspense boundary.
+    // There might be nested nodes so we need to keep track of how
+    // deep we are and only break out when we're back on top.
+
+    var depth = 0;
+
+    while (node) {
+      if (node.nodeType === COMMENT_NODE) {
+        var data = node.data;
+
+        if (data === SUSPENSE_END_DATA) {
+          if (depth === 0) {
+            return getNextHydratableSibling(node);
+          } else {
+            depth--;
+          }
+        } else if (data === SUSPENSE_START_DATA || data === SUSPENSE_FALLBACK_START_DATA || data === SUSPENSE_PENDING_START_DATA) {
+          depth++;
+        }
+      }
+
+      node = node.nextSibling;
+    } // TODO: Warn, we didn't find the end comment boundary.
+
+
+    return null;
+  } // Returns the SuspenseInstance if this node is a direct child of a
+  // SuspenseInstance. I.e. if its previous sibling is a Comment with
+  // SUSPENSE_x_START_DATA. Otherwise, null.
+
+  function getParentSuspenseInstance(targetInstance) {
+    var node = targetInstance.previousSibling; // Skip past all nodes within this suspense boundary.
+    // There might be nested nodes so we need to keep track of how
+    // deep we are and only break out when we're back on top.
+
+    var depth = 0;
+
+    while (node) {
+      if (node.nodeType === COMMENT_NODE) {
+        var data = node.data;
+
+        if (data === SUSPENSE_START_DATA || data === SUSPENSE_FALLBACK_START_DATA || data === SUSPENSE_PENDING_START_DATA) {
+          if (depth === 0) {
+            return node;
+          } else {
+            depth--;
+          }
+        } else if (data === SUSPENSE_END_DATA) {
+          depth++;
+        }
+      }
+
+      node = node.previousSibling;
+    }
+
+    return null;
+  }
+  function commitHydratedContainer(container) {
+    // Retry if any event replaying was blocked on this.
+    retryIfBlockedOn(container);
+  }
+  function commitHydratedSuspenseInstance(suspenseInstance) {
+    // Retry if any event replaying was blocked on this.
+    retryIfBlockedOn(suspenseInstance);
+  }
+  function didNotMatchHydratedContainerTextInstance(parentContainer, textInstance, text) {
+    {
+      warnForUnmatchedText(textInstance, text);
+    }
+  }
+  function didNotMatchHydratedTextInstance(parentType, parentProps, parentInstance, textInstance, text) {
+    if ( parentProps[SUPPRESS_HYDRATION_WARNING$1] !== true) {
+      warnForUnmatchedText(textInstance, text);
+    }
+  }
+  function didNotHydrateContainerInstance(parentContainer, instance) {
+    {
+      if (instance.nodeType === ELEMENT_NODE) {
+        warnForDeletedHydratableElement(parentContainer, instance);
+      } else if (instance.nodeType === COMMENT_NODE) ; else {
+        warnForDeletedHydratableText(parentContainer, instance);
+      }
+    }
+  }
+  function didNotHydrateInstance(parentType, parentProps, parentInstance, instance) {
+    if ( parentProps[SUPPRESS_HYDRATION_WARNING$1] !== true) {
+      if (instance.nodeType === ELEMENT_NODE) {
+        warnForDeletedHydratableElement(parentInstance, instance);
+      } else if (instance.nodeType === COMMENT_NODE) ; else {
+        warnForDeletedHydratableText(parentInstance, instance);
+      }
+    }
+  }
+  function didNotFindHydratableContainerInstance(parentContainer, type, props) {
+    {
+      warnForInsertedHydratedElement(parentContainer, type);
+    }
+  }
+  function didNotFindHydratableContainerTextInstance(parentContainer, text) {
+    {
+      warnForInsertedHydratedText(parentContainer, text);
+    }
+  }
+  function didNotFindHydratableInstance(parentType, parentProps, parentInstance, type, props) {
+    if ( parentProps[SUPPRESS_HYDRATION_WARNING$1] !== true) {
+      warnForInsertedHydratedElement(parentInstance, type);
+    }
+  }
+  function didNotFindHydratableTextInstance(parentType, parentProps, parentInstance, text) {
+    if ( parentProps[SUPPRESS_HYDRATION_WARNING$1] !== true) {
+      warnForInsertedHydratedText(parentInstance, text);
+    }
+  }
+  function didNotFindHydratableSuspenseInstance(parentType, parentProps, parentInstance) {
+    if ( parentProps[SUPPRESS_HYDRATION_WARNING$1] !== true) ;
+  }
+
+  var randomKey = Math.random().toString(36).slice(2);
+  var internalInstanceKey = '__reactInternalInstance$' + randomKey;
+  var internalEventHandlersKey = '__reactEventHandlers$' + randomKey;
+  var internalContainerInstanceKey = '__reactContainere$' + randomKey;
+  function precacheFiberNode(hostInst, node) {
+    node[internalInstanceKey] = hostInst;
+  }
+  function markContainerAsRoot(hostRoot, node) {
+    node[internalContainerInstanceKey] = hostRoot;
+  }
+  function unmarkContainerAsRoot(node) {
+    node[internalContainerInstanceKey] = null;
+  }
+  function isContainerMarkedAsRoot(node) {
+    return !!node[internalContainerInstanceKey];
+  } // Given a DOM node, return the closest HostComponent or HostText fiber ancestor.
+  // If the target node is part of a hydrated or not yet rendered subtree, then
+  // this may also return a SuspenseComponent or HostRoot to indicate that.
+  // Conceptually the HostRoot fiber is a child of the Container node. So if you
+  // pass the Container node as the targetNode, you will not actually get the
+  // HostRoot back. To get to the HostRoot, you need to pass a child of it.
+  // The same thing applies to Suspense boundaries.
+
+  function getClosestInstanceFromNode(targetNode) {
+    var targetInst = targetNode[internalInstanceKey];
+
+    if (targetInst) {
+      // Don't return HostRoot or SuspenseComponent here.
+      return targetInst;
+    } // If the direct event target isn't a React owned DOM node, we need to look
+    // to see if one of its parents is a React owned DOM node.
+
+
+    var parentNode = targetNode.parentNode;
+
+    while (parentNode) {
+      // We'll check if this is a container root that could include
+      // React nodes in the future. We need to check this first because
+      // if we're a child of a dehydrated container, we need to first
+      // find that inner container before moving on to finding the parent
+      // instance. Note that we don't check this field on  the targetNode
+      // itself because the fibers are conceptually between the container
+      // node and the first child. It isn't surrounding the container node.
+      // If it's not a container, we check if it's an instance.
+      targetInst = parentNode[internalContainerInstanceKey] || parentNode[internalInstanceKey];
+
+      if (targetInst) {
+        // Since this wasn't the direct target of the event, we might have
+        // stepped past dehydrated DOM nodes to get here. However they could
+        // also have been non-React nodes. We need to answer which one.
+        // If we the instance doesn't have any children, then there can't be
+        // a nested suspense boundary within it. So we can use this as a fast
+        // bailout. Most of the time, when people add non-React children to
+        // the tree, it is using a ref to a child-less DOM node.
+        // Normally we'd only need to check one of the fibers because if it
+        // has ever gone from having children to deleting them or vice versa
+        // it would have deleted the dehydrated boundary nested inside already.
+        // However, since the HostRoot starts out with an alternate it might
+        // have one on the alternate so we need to check in case this was a
+        // root.
+        var alternate = targetInst.alternate;
+
+        if (targetInst.child !== null || alternate !== null && alternate.child !== null) {
+          // Next we need to figure out if the node that skipped past is
+          // nested within a dehydrated boundary and if so, which one.
+          var suspenseInstance = getParentSuspenseInstance(targetNode);
+
+          while (suspenseInstance !== null) {
+            // We found a suspense instance. That means that we haven't
+            // hydrated it yet. Even though we leave the comments in the
+            // DOM after hydrating, and there are boundaries in the DOM
+            // that could already be hydrated, we wouldn't have found them
+            // through this pass since if the target is hydrated it would
+            // have had an internalInstanceKey on it.
+            // Let's get the fiber associated with the SuspenseComponent
+            // as the deepest instance.
+            var targetSuspenseInst = suspenseInstance[internalInstanceKey];
+
+            if (targetSuspenseInst) {
+              return targetSuspenseInst;
+            } // If we don't find a Fiber on the comment, it might be because
+            // we haven't gotten to hydrate it yet. There might still be a
+            // parent boundary that hasn't above this one so we need to find
+            // the outer most that is known.
+
+
+            suspenseInstance = getParentSuspenseInstance(suspenseInstance); // If we don't find one, then that should mean that the parent
+            // host component also hasn't hydrated yet. We can return it
+            // below since it will bail out on the isMounted check later.
+          }
+        }
+
+        return targetInst;
+      }
+
+      targetNode = parentNode;
+      parentNode = targetNode.parentNode;
+    }
+
+    return null;
+  }
+  /**
+   * Given a DOM node, return the ReactDOMComponent or ReactDOMTextComponent
+   * instance, or null if the node was not rendered by this React.
+   */
+
+  function getInstanceFromNode$1(node) {
+    var inst = node[internalInstanceKey] || node[internalContainerInstanceKey];
+
+    if (inst) {
+      if (inst.tag === HostComponent || inst.tag === HostText || inst.tag === SuspenseComponent || inst.tag === HostRoot) {
+        return inst;
+      } else {
+        return null;
+      }
+    }
+
+    return null;
+  }
+  /**
+   * Given a ReactDOMComponent or ReactDOMTextComponent, return the corresponding
+   * DOM node.
+   */
+
+  function getNodeFromInstance$1(inst) {
+    if (inst.tag === HostComponent || inst.tag === HostText) {
+      // In Fiber this, is just the state node right now. We assume it will be
+      // a host component or host text.
+      return inst.stateNode;
+    } // Without this first invariant, passing a non-DOM-component triggers the next
+    // invariant for a missing parent, which is super confusing.
+
+
+    {
+      {
+        throw Error( "getNodeFromInstance: Invalid argument." );
+      }
+    }
+  }
+  function getFiberCurrentPropsFromNode$1(node) {
+    return node[internalEventHandlersKey] || null;
+  }
+  function updateFiberProps(node, props) {
+    node[internalEventHandlersKey] = props;
+  }
+
+  function getParent(inst) {
+    do {
+      inst = inst.return; // TODO: If this is a HostRoot we might want to bail out.
+      // That is depending on if we want nested subtrees (layers) to bubble
+      // events to their parent. We could also go through parentNode on the
+      // host node but that wouldn't work for React Native and doesn't let us
+      // do the portal feature.
+    } while (inst && inst.tag !== HostComponent);
+
+    if (inst) {
+      return inst;
+    }
+
+    return null;
+  }
+  /**
+   * Return the lowest common ancestor of A and B, or null if they are in
+   * different trees.
+   */
+
+
+  function getLowestCommonAncestor(instA, instB) {
+    var depthA = 0;
+
+    for (var tempA = instA; tempA; tempA = getParent(tempA)) {
+      depthA++;
+    }
+
+    var depthB = 0;
+
+    for (var tempB = instB; tempB; tempB = getParent(tempB)) {
+      depthB++;
+    } // If A is deeper, crawl up.
+
+
+    while (depthA - depthB > 0) {
+      instA = getParent(instA);
+      depthA--;
+    } // If B is deeper, crawl up.
+
+
+    while (depthB - depthA > 0) {
+      instB = getParent(instB);
+      depthB--;
+    } // Walk in lockstep until we find a match.
+
+
+    var depth = depthA;
+
+    while (depth--) {
+      if (instA === instB || instA === instB.alternate) {
+        return instA;
+      }
+
+      instA = getParent(instA);
+      instB = getParent(instB);
+    }
+
+    return null;
+  }
+  /**
+   * Simulates the traversal of a two-phase, capture/bubble event dispatch.
+   */
+
+  function traverseTwoPhase(inst, fn, arg) {
+    var path = [];
+
+    while (inst) {
+      path.push(inst);
+      inst = getParent(inst);
+    }
+
+    var i;
+
+    for (i = path.length; i-- > 0;) {
+      fn(path[i], 'captured', arg);
+    }
+
+    for (i = 0; i < path.length; i++) {
+      fn(path[i], 'bubbled', arg);
+    }
+  }
+  /**
+   * Traverses the ID hierarchy and invokes the supplied `cb` on any IDs that
+   * should would receive a `mouseEnter` or `mouseLeave` event.
+   *
+   * Does not invoke the callback on the nearest common ancestor because nothing
+   * "entered" or "left" that element.
+   */
+
+  function traverseEnterLeave(from, to, fn, argFrom, argTo) {
+    var common = from && to ? getLowestCommonAncestor(from, to) : null;
+    var pathFrom = [];
+
+    while (true) {
+      if (!from) {
+        break;
+      }
+
+      if (from === common) {
+        break;
+      }
+
+      var alternate = from.alternate;
+
+      if (alternate !== null && alternate === common) {
+        break;
+      }
+
+      pathFrom.push(from);
+      from = getParent(from);
+    }
+
+    var pathTo = [];
+
+    while (true) {
+      if (!to) {
+        break;
+      }
+
+      if (to === common) {
+        break;
+      }
+
+      var _alternate = to.alternate;
+
+      if (_alternate !== null && _alternate === common) {
+        break;
+      }
+
+      pathTo.push(to);
+      to = getParent(to);
+    }
+
+    for (var i = 0; i < pathFrom.length; i++) {
+      fn(pathFrom[i], 'bubbled', argFrom);
+    }
+
+    for (var _i = pathTo.length; _i-- > 0;) {
+      fn(pathTo[_i], 'captured', argTo);
+    }
+  }
+
+  function isInteractive(tag) {
+    return tag === 'button' || tag === 'input' || tag === 'select' || tag === 'textarea';
+  }
+
+  function shouldPreventMouseEvent(name, type, props) {
+    switch (name) {
+      case 'onClick':
+      case 'onClickCapture':
+      case 'onDoubleClick':
+      case 'onDoubleClickCapture':
+      case 'onMouseDown':
+      case 'onMouseDownCapture':
+      case 'onMouseMove':
+      case 'onMouseMoveCapture':
+      case 'onMouseUp':
+      case 'onMouseUpCapture':
+      case 'onMouseEnter':
+        return !!(props.disabled && isInteractive(type));
+
+      default:
+        return false;
+    }
+  }
+  /**
+   * @param {object} inst The instance, which is the source of events.
+   * @param {string} registrationName Name of listener (e.g. `onClick`).
+   * @return {?function} The stored callback.
+   */
+
+
+  function getListener(inst, registrationName) {
+    var listener; // TODO: shouldPreventMouseEvent is DOM-specific and definitely should not
+    // live here; needs to be moved to a better place soon
+
+    var stateNode = inst.stateNode;
+
+    if (!stateNode) {
+      // Work in progress (ex: onload events in incremental mode).
+      return null;
+    }
+
+    var props = getFiberCurrentPropsFromNode(stateNode);
+
+    if (!props) {
+      // Work in progress.
+      return null;
+    }
+
+    listener = props[registrationName];
+
+    if (shouldPreventMouseEvent(registrationName, inst.type, props)) {
+      return null;
+    }
+
+    if (!(!listener || typeof listener === 'function')) {
+      {
+        throw Error( "Expected `" + registrationName + "` listener to be a function, instead got a value of `" + typeof listener + "` type." );
+      }
+    }
+
+    return listener;
+  }
+
+  /**
+   * Some event types have a notion of different registration names for different
+   * "phases" of propagation. This finds listeners by a given phase.
+   */
+  function listenerAtPhase(inst, event, propagationPhase) {
+    var registrationName = event.dispatchConfig.phasedRegistrationNames[propagationPhase];
+    return getListener(inst, registrationName);
+  }
+  /**
+   * A small set of propagation patterns, each of which will accept a small amount
+   * of information, and generate a set of "dispatch ready event objects" - which
+   * are sets of events that have already been annotated with a set of dispatched
+   * listener functions/ids. The API is designed this way to discourage these
+   * propagation strategies from actually executing the dispatches, since we
+   * always want to collect the entire set of dispatches before executing even a
+   * single one.
+   */
+
+  /**
+   * Tags a `SyntheticEvent` with dispatched listeners. Creating this function
+   * here, allows us to not have to bind or create functions for each event.
+   * Mutating the event's members allows us to not have to create a wrapping
+   * "dispatch" object that pairs the event with the listener.
+   */
+
+
+  function accumulateDirectionalDispatches(inst, phase, event) {
+    {
+      if (!inst) {
+        error('Dispatching inst must not be null');
+      }
+    }
+
+    var listener = listenerAtPhase(inst, event, phase);
+
+    if (listener) {
+      event._dispatchListeners = accumulateInto(event._dispatchListeners, listener);
+      event._dispatchInstances = accumulateInto(event._dispatchInstances, inst);
+    }
+  }
+  /**
+   * Collect dispatches (must be entirely collected before dispatching - see unit
+   * tests). Lazily allocate the array to conserve memory.  We must loop through
+   * each event and perform the traversal for each one. We cannot perform a
+   * single traversal for the entire collection of events because each event may
+   * have a different target.
+   */
+
+
+  function accumulateTwoPhaseDispatchesSingle(event) {
+    if (event && event.dispatchConfig.phasedRegistrationNames) {
+      traverseTwoPhase(event._targetInst, accumulateDirectionalDispatches, event);
+    }
+  }
+  /**
+   * Accumulates without regard to direction, does not look for phased
+   * registration names. Same as `accumulateDirectDispatchesSingle` but without
+   * requiring that the `dispatchMarker` be the same as the dispatched ID.
+   */
+
+
+  function accumulateDispatches(inst, ignoredDirection, event) {
+    if (inst && event && event.dispatchConfig.registrationName) {
+      var registrationName = event.dispatchConfig.registrationName;
+      var listener = getListener(inst, registrationName);
+
+      if (listener) {
+        event._dispatchListeners = accumulateInto(event._dispatchListeners, listener);
+        event._dispatchInstances = accumulateInto(event._dispatchInstances, inst);
+      }
+    }
+  }
+  /**
+   * Accumulates dispatches on an `SyntheticEvent`, but only for the
+   * `dispatchMarker`.
+   * @param {SyntheticEvent} event
+   */
+
+
+  function accumulateDirectDispatchesSingle(event) {
+    if (event && event.dispatchConfig.registrationName) {
+      accumulateDispatches(event._targetInst, null, event);
+    }
+  }
+
+  function accumulateTwoPhaseDispatches(events) {
+    forEachAccumulated(events, accumulateTwoPhaseDispatchesSingle);
+  }
+  function accumulateEnterLeaveDispatches(leave, enter, from, to) {
+    traverseEnterLeave(from, to, accumulateDispatches, leave, enter);
+  }
+  function accumulateDirectDispatches(events) {
+    forEachAccumulated(events, accumulateDirectDispatchesSingle);
+  }
+
+  /**
+   * These variables store information about text content of a target node,
+   * allowing comparison of content before and after a given event.
+   *
+   * Identify the node where selection currently begins, then observe
+   * both its text content and its current position in the DOM. Since the
+   * browser may natively replace the target node during composition, we can
+   * use its position to find its replacement.
+   *
+   *
+   */
+  var root = null;
+  var startText = null;
+  var fallbackText = null;
+  function initialize(nativeEventTarget) {
+    root = nativeEventTarget;
+    startText = getText();
+    return true;
+  }
+  function reset() {
+    root = null;
+    startText = null;
+    fallbackText = null;
+  }
+  function getData() {
+    if (fallbackText) {
+      return fallbackText;
+    }
+
+    var start;
+    var startValue = startText;
+    var startLength = startValue.length;
+    var end;
+    var endValue = getText();
+    var endLength = endValue.length;
+
+    for (start = 0; start < startLength; start++) {
+      if (startValue[start] !== endValue[start]) {
+        break;
+      }
+    }
+
+    var minEnd = startLength - start;
+
+    for (end = 1; end <= minEnd; end++) {
+      if (startValue[startLength - end] !== endValue[endLength - end]) {
+        break;
+      }
+    }
+
+    var sliceTail = end > 1 ? 1 - end : undefined;
+    fallbackText = endValue.slice(start, sliceTail);
+    return fallbackText;
+  }
+  function getText() {
+    if ('value' in root) {
+      return root.value;
+    }
+
+    return root.textContent;
+  }
+
+  var EVENT_POOL_SIZE = 10;
+  /**
+   * @interface Event
+   * @see http://www.w3.org/TR/DOM-Level-3-Events/
+   */
+
+  var EventInterface = {
+    type: null,
+    target: null,
+    // currentTarget is set when dispatching; no use in copying it here
+    currentTarget: function () {
+      return null;
+    },
+    eventPhase: null,
+    bubbles: null,
+    cancelable: null,
+    timeStamp: function (event) {
+      return event.timeStamp || Date.now();
+    },
+    defaultPrevented: null,
+    isTrusted: null
+  };
+
+  function functionThatReturnsTrue() {
+    return true;
+  }
+
+  function functionThatReturnsFalse() {
+    return false;
+  }
+  /**
+   * Synthetic events are dispatched by event plugins, typically in response to a
+   * top-level event delegation handler.
+   *
+   * These systems should generally use pooling to reduce the frequency of garbage
+   * collection. The system should check `isPersistent` to determine whether the
+   * event should be released into the pool after being dispatched. Users that
+   * need a persisted event should invoke `persist`.
+   *
+   * Synthetic events (and subclasses) implement the DOM Level 3 Events API by
+   * normalizing browser quirks. Subclasses do not necessarily have to implement a
+   * DOM interface; custom application-specific events can also subclass this.
+   *
+   * @param {object} dispatchConfig Configuration used to dispatch this event.
+   * @param {*} targetInst Marker identifying the event target.
+   * @param {object} nativeEvent Native browser event.
+   * @param {DOMEventTarget} nativeEventTarget Target node.
+   */
+
+
+  function SyntheticEvent(dispatchConfig, targetInst, nativeEvent, nativeEventTarget) {
+    {
+      // these have a getter/setter for warnings
+      delete this.nativeEvent;
+      delete this.preventDefault;
+      delete this.stopPropagation;
+      delete this.isDefaultPrevented;
+      delete this.isPropagationStopped;
+    }
+
+    this.dispatchConfig = dispatchConfig;
+    this._targetInst = targetInst;
+    this.nativeEvent = nativeEvent;
+    var Interface = this.constructor.Interface;
+
+    for (var propName in Interface) {
+      if (!Interface.hasOwnProperty(propName)) {
+        continue;
+      }
+
+      {
+        delete this[propName]; // this has a getter/setter for warnings
+      }
+
+      var normalize = Interface[propName];
+
+      if (normalize) {
+        this[propName] = normalize(nativeEvent);
+      } else {
+        if (propName === 'target') {
+          this.target = nativeEventTarget;
+        } else {
+          this[propName] = nativeEvent[propName];
+        }
+      }
+    }
+
+    var defaultPrevented = nativeEvent.defaultPrevented != null ? nativeEvent.defaultPrevented : nativeEvent.returnValue === false;
+
+    if (defaultPrevented) {
+      this.isDefaultPrevented = functionThatReturnsTrue;
+    } else {
+      this.isDefaultPrevented = functionThatReturnsFalse;
+    }
+
+    this.isPropagationStopped = functionThatReturnsFalse;
+    return this;
+  }
+
+  _assign(SyntheticEvent.prototype, {
+    preventDefault: function () {
+      this.defaultPrevented = true;
+      var event = this.nativeEvent;
+
+      if (!event) {
+        return;
+      }
+
+      if (event.preventDefault) {
+        event.preventDefault();
+      } else if (typeof event.returnValue !== 'unknown') {
+        event.returnValue = false;
+      }
+
+      this.isDefaultPrevented = functionThatReturnsTrue;
+    },
+    stopPropagation: function () {
+      var event = this.nativeEvent;
+
+      if (!event) {
+        return;
+      }
+
+      if (event.stopPropagation) {
+        event.stopPropagation();
+      } else if (typeof event.cancelBubble !== 'unknown') {
+        // The ChangeEventPlugin registers a "propertychange" event for
+        // IE. This event does not support bubbling or cancelling, and
+        // any references to cancelBubble throw "Member not found".  A
+        // typeof check of "unknown" circumvents this issue (and is also
+        // IE specific).
+        event.cancelBubble = true;
+      }
+
+      this.isPropagationStopped = functionThatReturnsTrue;
+    },
+
+    /**
+     * We release all dispatched `SyntheticEvent`s after each event loop, adding
+     * them back into the pool. This allows a way to hold onto a reference that
+     * won't be added back into the pool.
+     */
+    persist: function () {
+      this.isPersistent = functionThatReturnsTrue;
+    },
+
+    /**
+     * Checks if this event should be released back into the pool.
+     *
+     * @return {boolean} True if this should not be released, false otherwise.
+     */
+    isPersistent: functionThatReturnsFalse,
+
+    /**
+     * `PooledClass` looks for `destructor` on each instance it releases.
+     */
+    destructor: function () {
+      var Interface = this.constructor.Interface;
+
+      for (var propName in Interface) {
+        {
+          Object.defineProperty(this, propName, getPooledWarningPropertyDefinition(propName, Interface[propName]));
+        }
+      }
+
+      this.dispatchConfig = null;
+      this._targetInst = null;
+      this.nativeEvent = null;
+      this.isDefaultPrevented = functionThatReturnsFalse;
+      this.isPropagationStopped = functionThatReturnsFalse;
+      this._dispatchListeners = null;
+      this._dispatchInstances = null;
+
+      {
+        Object.defineProperty(this, 'nativeEvent', getPooledWarningPropertyDefinition('nativeEvent', null));
+        Object.defineProperty(this, 'isDefaultPrevented', getPooledWarningPropertyDefinition('isDefaultPrevented', functionThatReturnsFalse));
+        Object.defineProperty(this, 'isPropagationStopped', getPooledWarningPropertyDefinition('isPropagationStopped', functionThatReturnsFalse));
+        Object.defineProperty(this, 'preventDefault', getPooledWarningPropertyDefinition('preventDefault', function () {}));
+        Object.defineProperty(this, 'stopPropagation', getPooledWarningPropertyDefinition('stopPropagation', function () {}));
+      }
+    }
+  });
+
+  SyntheticEvent.Interface = EventInterface;
+  /**
+   * Helper to reduce boilerplate when creating subclasses.
+   */
+
+  SyntheticEvent.extend = function (Interface) {
+    var Super = this;
+
+    var E = function () {};
+
+    E.prototype = Super.prototype;
+    var prototype = new E();
+
+    function Class() {
+      return Super.apply(this, arguments);
+    }
+
+    _assign(prototype, Class.prototype);
+
+    Class.prototype = prototype;
+    Class.prototype.constructor = Class;
+    Class.Interface = _assign({}, Super.Interface, Interface);
+    Class.extend = Super.extend;
+    addEventPoolingTo(Class);
+    return Class;
+  };
+
+  addEventPoolingTo(SyntheticEvent);
+  /**
+   * Helper to nullify syntheticEvent instance properties when destructing
+   *
+   * @param {String} propName
+   * @param {?object} getVal
+   * @return {object} defineProperty object
+   */
+
+  function getPooledWarningPropertyDefinition(propName, getVal) {
+    var isFunction = typeof getVal === 'function';
+    return {
+      configurable: true,
+      set: set,
+      get: get
+    };
+
+    function set(val) {
+      var action = isFunction ? 'setting the method' : 'setting the property';
+      warn(action, 'This is effectively a no-op');
+      return val;
+    }
+
+    function get() {
+      var action = isFunction ? 'accessing the method' : 'accessing the property';
+      var result = isFunction ? 'This is a no-op function' : 'This is set to null';
+      warn(action, result);
+      return getVal;
+    }
+
+    function warn(action, result) {
+      {
+        error("This synthetic event is reused for performance reasons. If you're seeing this, " + "you're %s `%s` on a released/nullified synthetic event. %s. " + 'If you must keep the original synthetic event around, use event.persist(). ' + 'See https://fb.me/react-event-pooling for more information.', action, propName, result);
+      }
+    }
+  }
+
+  function getPooledEvent(dispatchConfig, targetInst, nativeEvent, nativeInst) {
+    var EventConstructor = this;
+
+    if (EventConstructor.eventPool.length) {
+      var instance = EventConstructor.eventPool.pop();
+      EventConstructor.call(instance, dispatchConfig, targetInst, nativeEvent, nativeInst);
+      return instance;
+    }
+
+    return new EventConstructor(dispatchConfig, targetInst, nativeEvent, nativeInst);
+  }
+
+  function releasePooledEvent(event) {
+    var EventConstructor = this;
+
+    if (!(event instanceof EventConstructor)) {
+      {
+        throw Error( "Trying to release an event instance into a pool of a different type." );
+      }
+    }
+
+    event.destructor();
+
+    if (EventConstructor.eventPool.length < EVENT_POOL_SIZE) {
+      EventConstructor.eventPool.push(event);
+    }
+  }
+
+  function addEventPoolingTo(EventConstructor) {
+    EventConstructor.eventPool = [];
+    EventConstructor.getPooled = getPooledEvent;
+    EventConstructor.release = releasePooledEvent;
+  }
+
+  /**
+   * @interface Event
+   * @see http://www.w3.org/TR/DOM-Level-3-Events/#events-compositionevents
+   */
+
+  var SyntheticCompositionEvent = SyntheticEvent.extend({
+    data: null
+  });
+
+  /**
+   * @interface Event
+   * @see http://www.w3.org/TR/2013/WD-DOM-Level-3-Events-20131105
+   *      /#events-inputevents
+   */
+
+  var SyntheticInputEvent = SyntheticEvent.extend({
+    data: null
+  });
+
+  var END_KEYCODES = [9, 13, 27, 32]; // Tab, Return, Esc, Space
+
+  var START_KEYCODE = 229;
+  var canUseCompositionEvent = canUseDOM && 'CompositionEvent' in window;
+  var documentMode = null;
+
+  if (canUseDOM && 'documentMode' in document) {
+    documentMode = document.documentMode;
+  } // Webkit offers a very useful `textInput` event that can be used to
+  // directly represent `beforeInput`. The IE `textinput` event is not as
+  // useful, so we don't use it.
+
+
+  var canUseTextInputEvent = canUseDOM && 'TextEvent' in window && !documentMode; // In IE9+, we have access to composition events, but the data supplied
+  // by the native compositionend event may be incorrect. Japanese ideographic
+  // spaces, for instance (\u3000) are not recorded correctly.
+
+  var useFallbackCompositionData = canUseDOM && (!canUseCompositionEvent || documentMode && documentMode > 8 && documentMode <= 11);
+  var SPACEBAR_CODE = 32;
+  var SPACEBAR_CHAR = String.fromCharCode(SPACEBAR_CODE); // Events and their corresponding property names.
+
+  var eventTypes = {
+    beforeInput: {
+      phasedRegistrationNames: {
+        bubbled: 'onBeforeInput',
+        captured: 'onBeforeInputCapture'
+      },
+      dependencies: [TOP_COMPOSITION_END, TOP_KEY_PRESS, TOP_TEXT_INPUT, TOP_PASTE]
+    },
+    compositionEnd: {
+      phasedRegistrationNames: {
+        bubbled: 'onCompositionEnd',
+        captured: 'onCompositionEndCapture'
+      },
+      dependencies: [TOP_BLUR, TOP_COMPOSITION_END, TOP_KEY_DOWN, TOP_KEY_PRESS, TOP_KEY_UP, TOP_MOUSE_DOWN]
+    },
+    compositionStart: {
+      phasedRegistrationNames: {
+        bubbled: 'onCompositionStart',
+        captured: 'onCompositionStartCapture'
+      },
+      dependencies: [TOP_BLUR, TOP_COMPOSITION_START, TOP_KEY_DOWN, TOP_KEY_PRESS, TOP_KEY_UP, TOP_MOUSE_DOWN]
+    },
+    compositionUpdate: {
+      phasedRegistrationNames: {
+        bubbled: 'onCompositionUpdate',
+        captured: 'onCompositionUpdateCapture'
+      },
+      dependencies: [TOP_BLUR, TOP_COMPOSITION_UPDATE, TOP_KEY_DOWN, TOP_KEY_PRESS, TOP_KEY_UP, TOP_MOUSE_DOWN]
+    }
+  }; // Track whether we've ever handled a keypress on the space key.
+
+  var hasSpaceKeypress = false;
+  /**
+   * Return whether a native keypress event is assumed to be a command.
+   * This is required because Firefox fires `keypress` events for key commands
+   * (cut, copy, select-all, etc.) even though no character is inserted.
+   */
+
+  function isKeypressCommand(nativeEvent) {
+    return (nativeEvent.ctrlKey || nativeEvent.altKey || nativeEvent.metaKey) && // ctrlKey && altKey is equivalent to AltGr, and is not a command.
+    !(nativeEvent.ctrlKey && nativeEvent.altKey);
+  }
+  /**
+   * Translate native top level events into event types.
+   *
+   * @param {string} topLevelType
+   * @return {object}
+   */
+
+
+  function getCompositionEventType(topLevelType) {
+    switch (topLevelType) {
+      case TOP_COMPOSITION_START:
+        return eventTypes.compositionStart;
+
+      case TOP_COMPOSITION_END:
+        return eventTypes.compositionEnd;
+
+      case TOP_COMPOSITION_UPDATE:
+        return eventTypes.compositionUpdate;
+    }
+  }
+  /**
+   * Does our fallback best-guess model think this event signifies that
+   * composition has begun?
+   *
+   * @param {string} topLevelType
+   * @param {object} nativeEvent
+   * @return {boolean}
+   */
+
+
+  function isFallbackCompositionStart(topLevelType, nativeEvent) {
+    return topLevelType === TOP_KEY_DOWN && nativeEvent.keyCode === START_KEYCODE;
+  }
+  /**
+   * Does our fallback mode think that this event is the end of composition?
+   *
+   * @param {string} topLevelType
+   * @param {object} nativeEvent
+   * @return {boolean}
+   */
+
+
+  function isFallbackCompositionEnd(topLevelType, nativeEvent) {
+    switch (topLevelType) {
+      case TOP_KEY_UP:
+        // Command keys insert or clear IME input.
+        return END_KEYCODES.indexOf(nativeEvent.keyCode) !== -1;
+
+      case TOP_KEY_DOWN:
+        // Expect IME keyCode on each keydown. If we get any other
+        // code we must have exited earlier.
+        return nativeEvent.keyCode !== START_KEYCODE;
+
+      case TOP_KEY_PRESS:
+      case TOP_MOUSE_DOWN:
+      case TOP_BLUR:
+        // Events are not possible without cancelling IME.
+        return true;
+
+      default:
+        return false;
+    }
+  }
+  /**
+   * Google Input Tools provides composition data via a CustomEvent,
+   * with the `data` property populated in the `detail` object. If this
+   * is available on the event object, use it. If not, this is a plain
+   * composition event and we have nothing special to extract.
+   *
+   * @param {object} nativeEvent
+   * @return {?string}
+   */
+
+
+  function getDataFromCustomEvent(nativeEvent) {
+    var detail = nativeEvent.detail;
+
+    if (typeof detail === 'object' && 'data' in detail) {
+      return detail.data;
+    }
+
+    return null;
+  }
+  /**
+   * Check if a composition event was triggered by Korean IME.
+   * Our fallback mode does not work well with IE's Korean IME,
+   * so just use native composition events when Korean IME is used.
+   * Although CompositionEvent.locale property is deprecated,
+   * it is available in IE, where our fallback mode is enabled.
+   *
+   * @param {object} nativeEvent
+   * @return {boolean}
+   */
+
+
+  function isUsingKoreanIME(nativeEvent) {
+    return nativeEvent.locale === 'ko';
+  } // Track the current IME composition status, if any.
+
+
+  var isComposing = false;
+  /**
+   * @return {?object} A SyntheticCompositionEvent.
+   */
+
+  function extractCompositionEvent(topLevelType, targetInst, nativeEvent, nativeEventTarget) {
+    var eventType;
+    var fallbackData;
+
+    if (canUseCompositionEvent) {
+      eventType = getCompositionEventType(topLevelType);
+    } else if (!isComposing) {
+      if (isFallbackCompositionStart(topLevelType, nativeEvent)) {
+        eventType = eventTypes.compositionStart;
+      }
+    } else if (isFallbackCompositionEnd(topLevelType, nativeEvent)) {
+      eventType = eventTypes.compositionEnd;
+    }
+
+    if (!eventType) {
+      return null;
+    }
+
+    if (useFallbackCompositionData && !isUsingKoreanIME(nativeEvent)) {
+      // The current composition is stored statically and must not be
+      // overwritten while composition continues.
+      if (!isComposing && eventType === eventTypes.compositionStart) {
+        isComposing = initialize(nativeEventTarget);
+      } else if (eventType === eventTypes.compositionEnd) {
+        if (isComposing) {
+          fallbackData = getData();
+        }
+      }
+    }
+
+    var event = SyntheticCompositionEvent.getPooled(eventType, targetInst, nativeEvent, nativeEventTarget);
+
+    if (fallbackData) {
+      // Inject data generated from fallback path into the synthetic event.
+      // This matches the property of native CompositionEventInterface.
+      event.data = fallbackData;
+    } else {
+      var customData = getDataFromCustomEvent(nativeEvent);
+
+      if (customData !== null) {
+        event.data = customData;
+      }
+    }
+
+    accumulateTwoPhaseDispatches(event);
+    return event;
+  }
+  /**
+   * @param {TopLevelType} topLevelType Number from `TopLevelType`.
+   * @param {object} nativeEvent Native browser event.
+   * @return {?string} The string corresponding to this `beforeInput` event.
+   */
+
+
+  function getNativeBeforeInputChars(topLevelType, nativeEvent) {
+    switch (topLevelType) {
+      case TOP_COMPOSITION_END:
+        return getDataFromCustomEvent(nativeEvent);
+
+      case TOP_KEY_PRESS:
+        /**
+         * If native `textInput` events are available, our goal is to make
+         * use of them. However, there is a special case: the spacebar key.
+         * In Webkit, preventing default on a spacebar `textInput` event
+         * cancels character insertion, but it *also* causes the browser
+         * to fall back to its default spacebar behavior of scrolling the
+         * page.
+         *
+         * Tracking at:
+         * https://code.google.com/p/chromium/issues/detail?id=355103
+         *
+         * To avoid this issue, use the keypress event as if no `textInput`
+         * event is available.
+         */
+        var which = nativeEvent.which;
+
+        if (which !== SPACEBAR_CODE) {
+          return null;
+        }
+
+        hasSpaceKeypress = true;
+        return SPACEBAR_CHAR;
+
+      case TOP_TEXT_INPUT:
+        // Record the characters to be added to the DOM.
+        var chars = nativeEvent.data; // If it's a spacebar character, assume that we have already handled
+        // it at the keypress level and bail immediately. Android Chrome
+        // doesn't give us keycodes, so we need to ignore it.
+
+        if (chars === SPACEBAR_CHAR && hasSpaceKeypress) {
+          return null;
+        }
+
+        return chars;
+
+      default:
+        // For other native event types, do nothing.
+        return null;
+    }
+  }
+  /**
+   * For browsers that do not provide the `textInput` event, extract the
+   * appropriate string to use for SyntheticInputEvent.
+   *
+   * @param {number} topLevelType Number from `TopLevelEventTypes`.
+   * @param {object} nativeEvent Native browser event.
+   * @return {?string} The fallback string for this `beforeInput` event.
+   */
+
+
+  function getFallbackBeforeInputChars(topLevelType, nativeEvent) {
+    // If we are currently composing (IME) and using a fallback to do so,
+    // try to extract the composed characters from the fallback object.
+    // If composition event is available, we extract a string only at
+    // compositionevent, otherwise extract it at fallback events.
+    if (isComposing) {
+      if (topLevelType === TOP_COMPOSITION_END || !canUseCompositionEvent && isFallbackCompositionEnd(topLevelType, nativeEvent)) {
+        var chars = getData();
+        reset();
+        isComposing = false;
+        return chars;
+      }
+
+      return null;
+    }
+
+    switch (topLevelType) {
+      case TOP_PASTE:
+        // If a paste event occurs after a keypress, throw out the input
+        // chars. Paste events should not lead to BeforeInput events.
+        return null;
+
+      case TOP_KEY_PRESS:
+        /**
+         * As of v27, Firefox may fire keypress events even when no character
+         * will be inserted. A few possibilities:
+         *
+         * - `which` is `0`. Arrow keys, Esc key, etc.
+         *
+         * - `which` is the pressed key code, but no char is available.
+         *   Ex: 'AltGr + d` in Polish. There is no modified character for
+         *   this key combination and no character is inserted into the
+         *   document, but FF fires the keypress for char code `100` anyway.
+         *   No `input` event will occur.
+         *
+         * - `which` is the pressed key code, but a command combination is
+         *   being used. Ex: `Cmd+C`. No character is inserted, and no
+         *   `input` event will occur.
+         */
+        if (!isKeypressCommand(nativeEvent)) {
+          // IE fires the `keypress` event when a user types an emoji via
+          // Touch keyboard of Windows.  In such a case, the `char` property
+          // holds an emoji character like `\uD83D\uDE0A`.  Because its length
+          // is 2, the property `which` does not represent an emoji correctly.
+          // In such a case, we directly return the `char` property instead of
+          // using `which`.
+          if (nativeEvent.char && nativeEvent.char.length > 1) {
+            return nativeEvent.char;
+          } else if (nativeEvent.which) {
+            return String.fromCharCode(nativeEvent.which);
+          }
+        }
+
+        return null;
+
+      case TOP_COMPOSITION_END:
+        return useFallbackCompositionData && !isUsingKoreanIME(nativeEvent) ? null : nativeEvent.data;
+
+      default:
+        return null;
+    }
+  }
+  /**
+   * Extract a SyntheticInputEvent for `beforeInput`, based on either native
+   * `textInput` or fallback behavior.
+   *
+   * @return {?object} A SyntheticInputEvent.
+   */
+
+
+  function extractBeforeInputEvent(topLevelType, targetInst, nativeEvent, nativeEventTarget) {
+    var chars;
+
+    if (canUseTextInputEvent) {
+      chars = getNativeBeforeInputChars(topLevelType, nativeEvent);
+    } else {
+      chars = getFallbackBeforeInputChars(topLevelType, nativeEvent);
+    } // If no characters are being inserted, no BeforeInput event should
+    // be fired.
+
+
+    if (!chars) {
+      return null;
+    }
+
+    var event = SyntheticInputEvent.getPooled(eventTypes.beforeInput, targetInst, nativeEvent, nativeEventTarget);
+    event.data = chars;
+    accumulateTwoPhaseDispatches(event);
+    return event;
+  }
+  /**
+   * Create an `onBeforeInput` event to match
+   * http://www.w3.org/TR/2013/WD-DOM-Level-3-Events-20131105/#events-inputevents.
+   *
+   * This event plugin is based on the native `textInput` event
+   * available in Chrome, Safari, Opera, and IE. This event fires after
+   * `onKeyPress` and `onCompositionEnd`, but before `onInput`.
+   *
+   * `beforeInput` is spec'd but not implemented in any browsers, and
+   * the `input` event does not provide any useful information about what has
+   * actually been added, contrary to the spec. Thus, `textInput` is the best
+   * available event to identify the characters that have actually been inserted
+   * into the target node.
+   *
+   * This plugin is also responsible for emitting `composition` events, thus
+   * allowing us to share composition fallback code for both `beforeInput` and
+   * `composition` event types.
+   */
+
+
+  var BeforeInputEventPlugin = {
+    eventTypes: eventTypes,
+    extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) {
+      var composition = extractCompositionEvent(topLevelType, targetInst, nativeEvent, nativeEventTarget);
+      var beforeInput = extractBeforeInputEvent(topLevelType, targetInst, nativeEvent, nativeEventTarget);
+
+      if (composition === null) {
+        return beforeInput;
+      }
+
+      if (beforeInput === null) {
+        return composition;
+      }
+
+      return [composition, beforeInput];
+    }
+  };
+
+  /**
+   * @see http://www.whatwg.org/specs/web-apps/current-work/multipage/the-input-element.html#input-type-attr-summary
+   */
+  var supportedInputTypes = {
+    color: true,
+    date: true,
+    datetime: true,
+    'datetime-local': true,
+    email: true,
+    month: true,
+    number: true,
+    password: true,
+    range: true,
+    search: true,
+    tel: true,
+    text: true,
+    time: true,
+    url: true,
+    week: true
+  };
+
+  function isTextInputElement(elem) {
+    var nodeName = elem && elem.nodeName && elem.nodeName.toLowerCase();
+
+    if (nodeName === 'input') {
+      return !!supportedInputTypes[elem.type];
+    }
+
+    if (nodeName === 'textarea') {
+      return true;
+    }
+
+    return false;
+  }
+
+  var eventTypes$1 = {
+    change: {
+      phasedRegistrationNames: {
+        bubbled: 'onChange',
+        captured: 'onChangeCapture'
+      },
+      dependencies: [TOP_BLUR, TOP_CHANGE, TOP_CLICK, TOP_FOCUS, TOP_INPUT, TOP_KEY_DOWN, TOP_KEY_UP, TOP_SELECTION_CHANGE]
+    }
+  };
+
+  function createAndAccumulateChangeEvent(inst, nativeEvent, target) {
+    var event = SyntheticEvent.getPooled(eventTypes$1.change, inst, nativeEvent, target);
+    event.type = 'change'; // Flag this event loop as needing state restore.
+
+    enqueueStateRestore(target);
+    accumulateTwoPhaseDispatches(event);
+    return event;
+  }
+  /**
+   * For IE shims
+   */
+
+
+  var activeElement = null;
+  var activeElementInst = null;
+  /**
+   * SECTION: handle `change` event
+   */
+
+  function shouldUseChangeEvent(elem) {
+    var nodeName = elem.nodeName && elem.nodeName.toLowerCase();
+    return nodeName === 'select' || nodeName === 'input' && elem.type === 'file';
+  }
+
+  function manualDispatchChangeEvent(nativeEvent) {
+    var event = createAndAccumulateChangeEvent(activeElementInst, nativeEvent, getEventTarget(nativeEvent)); // If change and propertychange bubbled, we'd just bind to it like all the
+    // other events and have it go through ReactBrowserEventEmitter. Since it
+    // doesn't, we manually listen for the events and so we have to enqueue and
+    // process the abstract event manually.
+    //
+    // Batching is necessary here in order to ensure that all event handlers run
+    // before the next rerender (including event handlers attached to ancestor
+    // elements instead of directly on the input). Without this, controlled
+    // components don't work properly in conjunction with event bubbling because
+    // the component is rerendered and the value reverted before all the event
+    // handlers can run. See https://github.com/facebook/react/issues/708.
+
+    batchedUpdates(runEventInBatch, event);
+  }
+
+  function runEventInBatch(event) {
+    runEventsInBatch(event);
+  }
+
+  function getInstIfValueChanged(targetInst) {
+    var targetNode = getNodeFromInstance$1(targetInst);
+
+    if (updateValueIfChanged(targetNode)) {
+      return targetInst;
+    }
+  }
+
+  function getTargetInstForChangeEvent(topLevelType, targetInst) {
+    if (topLevelType === TOP_CHANGE) {
+      return targetInst;
+    }
+  }
+  /**
+   * SECTION: handle `input` event
+   */
+
+
+  var isInputEventSupported = false;
+
+  if (canUseDOM) {
+    // IE9 claims to support the input event but fails to trigger it when
+    // deleting text, so we ignore its input events.
+    isInputEventSupported = isEventSupported('input') && (!document.documentMode || document.documentMode > 9);
+  }
+  /**
+   * (For IE <=9) Starts tracking propertychange events on the passed-in element
+   * and override the value property so that we can distinguish user events from
+   * value changes in JS.
+   */
+
+
+  function startWatchingForValueChange(target, targetInst) {
+    activeElement = target;
+    activeElementInst = targetInst;
+    activeElement.attachEvent('onpropertychange', handlePropertyChange);
+  }
+  /**
+   * (For IE <=9) Removes the event listeners from the currently-tracked element,
+   * if any exists.
+   */
+
+
+  function stopWatchingForValueChange() {
+    if (!activeElement) {
+      return;
+    }
+
+    activeElement.detachEvent('onpropertychange', handlePropertyChange);
+    activeElement = null;
+    activeElementInst = null;
+  }
+  /**
+   * (For IE <=9) Handles a propertychange event, sending a `change` event if
+   * the value of the active element has changed.
+   */
+
+
+  function handlePropertyChange(nativeEvent) {
+    if (nativeEvent.propertyName !== 'value') {
+      return;
+    }
+
+    if (getInstIfValueChanged(activeElementInst)) {
+      manualDispatchChangeEvent(nativeEvent);
+    }
+  }
+
+  function handleEventsForInputEventPolyfill(topLevelType, target, targetInst) {
+    if (topLevelType === TOP_FOCUS) {
+      // In IE9, propertychange fires for most input events but is buggy and
+      // doesn't fire when text is deleted, but conveniently, selectionchange
+      // appears to fire in all of the remaining cases so we catch those and
+      // forward the event if the value has changed
+      // In either case, we don't want to call the event handler if the value
+      // is changed from JS so we redefine a setter for `.value` that updates
+      // our activeElementValue variable, allowing us to ignore those changes
+      //
+      // stopWatching() should be a noop here but we call it just in case we
+      // missed a blur event somehow.
+      stopWatchingForValueChange();
+      startWatchingForValueChange(target, targetInst);
+    } else if (topLevelType === TOP_BLUR) {
+      stopWatchingForValueChange();
+    }
+  } // For IE8 and IE9.
+
+
+  function getTargetInstForInputEventPolyfill(topLevelType, targetInst) {
+    if (topLevelType === TOP_SELECTION_CHANGE || topLevelType === TOP_KEY_UP || topLevelType === TOP_KEY_DOWN) {
+      // On the selectionchange event, the target is just document which isn't
+      // helpful for us so just check activeElement instead.
+      //
+      // 99% of the time, keydown and keyup aren't necessary. IE8 fails to fire
+      // propertychange on the first input event after setting `value` from a
+      // script and fires only keydown, keypress, keyup. Catching keyup usually
+      // gets it and catching keydown lets us fire an event for the first
+      // keystroke if user does a key repeat (it'll be a little delayed: right
+      // before the second keystroke). Other input methods (e.g., paste) seem to
+      // fire selectionchange normally.
+      return getInstIfValueChanged(activeElementInst);
+    }
+  }
+  /**
+   * SECTION: handle `click` event
+   */
+
+
+  function shouldUseClickEvent(elem) {
+    // Use the `click` event to detect changes to checkbox and radio inputs.
+    // This approach works across all browsers, whereas `change` does not fire
+    // until `blur` in IE8.
+    var nodeName = elem.nodeName;
+    return nodeName && nodeName.toLowerCase() === 'input' && (elem.type === 'checkbox' || elem.type === 'radio');
+  }
+
+  function getTargetInstForClickEvent(topLevelType, targetInst) {
+    if (topLevelType === TOP_CLICK) {
+      return getInstIfValueChanged(targetInst);
+    }
+  }
+
+  function getTargetInstForInputOrChangeEvent(topLevelType, targetInst) {
+    if (topLevelType === TOP_INPUT || topLevelType === TOP_CHANGE) {
+      return getInstIfValueChanged(targetInst);
+    }
+  }
+
+  function handleControlledInputBlur(node) {
+    var state = node._wrapperState;
+
+    if (!state || !state.controlled || node.type !== 'number') {
+      return;
+    }
+
+    {
+      // If controlled, assign the value attribute to the current value on blur
+      setDefaultValue(node, 'number', node.value);
+    }
+  }
+  /**
+   * This plugin creates an `onChange` event that normalizes change events
+   * across form elements. This event fires at a time when it's possible to
+   * change the element's value without seeing a flicker.
+   *
+   * Supported elements are:
+   * - input (see `isTextInputElement`)
+   * - textarea
+   * - select
+   */
+
+
+  var ChangeEventPlugin = {
+    eventTypes: eventTypes$1,
+    _isInputEventSupported: isInputEventSupported,
+    extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) {
+      var targetNode = targetInst ? getNodeFromInstance$1(targetInst) : window;
+      var getTargetInstFunc, handleEventFunc;
+
+      if (shouldUseChangeEvent(targetNode)) {
+        getTargetInstFunc = getTargetInstForChangeEvent;
+      } else if (isTextInputElement(targetNode)) {
+        if (isInputEventSupported) {
+          getTargetInstFunc = getTargetInstForInputOrChangeEvent;
+        } else {
+          getTargetInstFunc = getTargetInstForInputEventPolyfill;
+          handleEventFunc = handleEventsForInputEventPolyfill;
+        }
+      } else if (shouldUseClickEvent(targetNode)) {
+        getTargetInstFunc = getTargetInstForClickEvent;
+      }
+
+      if (getTargetInstFunc) {
+        var inst = getTargetInstFunc(topLevelType, targetInst);
+
+        if (inst) {
+          var event = createAndAccumulateChangeEvent(inst, nativeEvent, nativeEventTarget);
+          return event;
+        }
+      }
+
+      if (handleEventFunc) {
+        handleEventFunc(topLevelType, targetNode, targetInst);
+      } // When blurring, set the value attribute for number inputs
+
+
+      if (topLevelType === TOP_BLUR) {
+        handleControlledInputBlur(targetNode);
+      }
+    }
+  };
+
+  var SyntheticUIEvent = SyntheticEvent.extend({
+    view: null,
+    detail: null
+  });
+
+  /**
+   * Translation from modifier key to the associated property in the event.
+   * @see http://www.w3.org/TR/DOM-Level-3-Events/#keys-Modifiers
+   */
+  var modifierKeyToProp = {
+    Alt: 'altKey',
+    Control: 'ctrlKey',
+    Meta: 'metaKey',
+    Shift: 'shiftKey'
+  }; // Older browsers (Safari <= 10, iOS Safari <= 10.2) do not support
+  // getModifierState. If getModifierState is not supported, we map it to a set of
+  // modifier keys exposed by the event. In this case, Lock-keys are not supported.
+
+  function modifierStateGetter(keyArg) {
+    var syntheticEvent = this;
+    var nativeEvent = syntheticEvent.nativeEvent;
+
+    if (nativeEvent.getModifierState) {
+      return nativeEvent.getModifierState(keyArg);
+    }
+
+    var keyProp = modifierKeyToProp[keyArg];
+    return keyProp ? !!nativeEvent[keyProp] : false;
+  }
+
+  function getEventModifierState(nativeEvent) {
+    return modifierStateGetter;
+  }
+
+  var previousScreenX = 0;
+  var previousScreenY = 0; // Use flags to signal movementX/Y has already been set
+
+  var isMovementXSet = false;
+  var isMovementYSet = false;
+  /**
+   * @interface MouseEvent
+   * @see http://www.w3.org/TR/DOM-Level-3-Events/
+   */
+
+  var SyntheticMouseEvent = SyntheticUIEvent.extend({
+    screenX: null,
+    screenY: null,
+    clientX: null,
+    clientY: null,
+    pageX: null,
+    pageY: null,
+    ctrlKey: null,
+    shiftKey: null,
+    altKey: null,
+    metaKey: null,
+    getModifierState: getEventModifierState,
+    button: null,
+    buttons: null,
+    relatedTarget: function (event) {
+      return event.relatedTarget || (event.fromElement === event.srcElement ? event.toElement : event.fromElement);
+    },
+    movementX: function (event) {
+      if ('movementX' in event) {
+        return event.movementX;
+      }
+
+      var screenX = previousScreenX;
+      previousScreenX = event.screenX;
+
+      if (!isMovementXSet) {
+        isMovementXSet = true;
+        return 0;
+      }
+
+      return event.type === 'mousemove' ? event.screenX - screenX : 0;
+    },
+    movementY: function (event) {
+      if ('movementY' in event) {
+        return event.movementY;
+      }
+
+      var screenY = previousScreenY;
+      previousScreenY = event.screenY;
+
+      if (!isMovementYSet) {
+        isMovementYSet = true;
+        return 0;
+      }
+
+      return event.type === 'mousemove' ? event.screenY - screenY : 0;
+    }
+  });
+
+  /**
+   * @interface PointerEvent
+   * @see http://www.w3.org/TR/pointerevents/
+   */
+
+  var SyntheticPointerEvent = SyntheticMouseEvent.extend({
+    pointerId: null,
+    width: null,
+    height: null,
+    pressure: null,
+    tangentialPressure: null,
+    tiltX: null,
+    tiltY: null,
+    twist: null,
+    pointerType: null,
+    isPrimary: null
+  });
+
+  var eventTypes$2 = {
+    mouseEnter: {
+      registrationName: 'onMouseEnter',
+      dependencies: [TOP_MOUSE_OUT, TOP_MOUSE_OVER]
+    },
+    mouseLeave: {
+      registrationName: 'onMouseLeave',
+      dependencies: [TOP_MOUSE_OUT, TOP_MOUSE_OVER]
+    },
+    pointerEnter: {
+      registrationName: 'onPointerEnter',
+      dependencies: [TOP_POINTER_OUT, TOP_POINTER_OVER]
+    },
+    pointerLeave: {
+      registrationName: 'onPointerLeave',
+      dependencies: [TOP_POINTER_OUT, TOP_POINTER_OVER]
+    }
+  };
+  var EnterLeaveEventPlugin = {
+    eventTypes: eventTypes$2,
+
+    /**
+     * For almost every interaction we care about, there will be both a top-level
+     * `mouseover` and `mouseout` event that occurs. Only use `mouseout` so that
+     * we do not extract duplicate events. However, moving the mouse into the
+     * browser from outside will not fire a `mouseout` event. In this case, we use
+     * the `mouseover` top-level event.
+     */
+    extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) {
+      var isOverEvent = topLevelType === TOP_MOUSE_OVER || topLevelType === TOP_POINTER_OVER;
+      var isOutEvent = topLevelType === TOP_MOUSE_OUT || topLevelType === TOP_POINTER_OUT;
+
+      if (isOverEvent && (eventSystemFlags & IS_REPLAYED) === 0 && (nativeEvent.relatedTarget || nativeEvent.fromElement)) {
+        // If this is an over event with a target, then we've already dispatched
+        // the event in the out event of the other target. If this is replayed,
+        // then it's because we couldn't dispatch against this target previously
+        // so we have to do it now instead.
+        return null;
+      }
+
+      if (!isOutEvent && !isOverEvent) {
+        // Must not be a mouse or pointer in or out - ignoring.
+        return null;
+      }
+
+      var win;
+
+      if (nativeEventTarget.window === nativeEventTarget) {
+        // `nativeEventTarget` is probably a window object.
+        win = nativeEventTarget;
+      } else {
+        // TODO: Figure out why `ownerDocument` is sometimes undefined in IE8.
+        var doc = nativeEventTarget.ownerDocument;
+
+        if (doc) {
+          win = doc.defaultView || doc.parentWindow;
+        } else {
+          win = window;
+        }
+      }
+
+      var from;
+      var to;
+
+      if (isOutEvent) {
+        from = targetInst;
+        var related = nativeEvent.relatedTarget || nativeEvent.toElement;
+        to = related ? getClosestInstanceFromNode(related) : null;
+
+        if (to !== null) {
+          var nearestMounted = getNearestMountedFiber(to);
+
+          if (to !== nearestMounted || to.tag !== HostComponent && to.tag !== HostText) {
+            to = null;
+          }
+        }
+      } else {
+        // Moving to a node from outside the window.
+        from = null;
+        to = targetInst;
+      }
+
+      if (from === to) {
+        // Nothing pertains to our managed components.
+        return null;
+      }
+
+      var eventInterface, leaveEventType, enterEventType, eventTypePrefix;
+
+      if (topLevelType === TOP_MOUSE_OUT || topLevelType === TOP_MOUSE_OVER) {
+        eventInterface = SyntheticMouseEvent;
+        leaveEventType = eventTypes$2.mouseLeave;
+        enterEventType = eventTypes$2.mouseEnter;
+        eventTypePrefix = 'mouse';
+      } else if (topLevelType === TOP_POINTER_OUT || topLevelType === TOP_POINTER_OVER) {
+        eventInterface = SyntheticPointerEvent;
+        leaveEventType = eventTypes$2.pointerLeave;
+        enterEventType = eventTypes$2.pointerEnter;
+        eventTypePrefix = 'pointer';
+      }
+
+      var fromNode = from == null ? win : getNodeFromInstance$1(from);
+      var toNode = to == null ? win : getNodeFromInstance$1(to);
+      var leave = eventInterface.getPooled(leaveEventType, from, nativeEvent, nativeEventTarget);
+      leave.type = eventTypePrefix + 'leave';
+      leave.target = fromNode;
+      leave.relatedTarget = toNode;
+      var enter = eventInterface.getPooled(enterEventType, to, nativeEvent, nativeEventTarget);
+      enter.type = eventTypePrefix + 'enter';
+      enter.target = toNode;
+      enter.relatedTarget = fromNode;
+      accumulateEnterLeaveDispatches(leave, enter, from, to); // If we are not processing the first ancestor, then we
+      // should not process the same nativeEvent again, as we
+      // will have already processed it in the first ancestor.
+
+      if ((eventSystemFlags & IS_FIRST_ANCESTOR) === 0) {
+        return [leave];
+      }
+
+      return [leave, enter];
+    }
+  };
+
+  /**
+   * inlined Object.is polyfill to avoid requiring consumers ship their own
+   * https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/is
+   */
+  function is(x, y) {
+    return x === y && (x !== 0 || 1 / x === 1 / y) || x !== x && y !== y // eslint-disable-line no-self-compare
+    ;
+  }
+
+  var objectIs = typeof Object.is === 'function' ? Object.is : is;
+
+  var hasOwnProperty$2 = Object.prototype.hasOwnProperty;
+  /**
+   * Performs equality by iterating through keys on an object and returning false
+   * when any key has values which are not strictly equal between the arguments.
+   * Returns true when the values of all keys are strictly equal.
+   */
+
+  function shallowEqual(objA, objB) {
+    if (objectIs(objA, objB)) {
+      return true;
+    }
+
+    if (typeof objA !== 'object' || objA === null || typeof objB !== 'object' || objB === null) {
+      return false;
+    }
+
+    var keysA = Object.keys(objA);
+    var keysB = Object.keys(objB);
+
+    if (keysA.length !== keysB.length) {
+      return false;
+    } // Test for A's keys different from B.
+
+
+    for (var i = 0; i < keysA.length; i++) {
+      if (!hasOwnProperty$2.call(objB, keysA[i]) || !objectIs(objA[keysA[i]], objB[keysA[i]])) {
+        return false;
+      }
+    }
+
+    return true;
+  }
+
+  var skipSelectionChangeEvent = canUseDOM && 'documentMode' in document && document.documentMode <= 11;
+  var eventTypes$3 = {
+    select: {
+      phasedRegistrationNames: {
+        bubbled: 'onSelect',
+        captured: 'onSelectCapture'
+      },
+      dependencies: [TOP_BLUR, TOP_CONTEXT_MENU, TOP_DRAG_END, TOP_FOCUS, TOP_KEY_DOWN, TOP_KEY_UP, TOP_MOUSE_DOWN, TOP_MOUSE_UP, TOP_SELECTION_CHANGE]
+    }
+  };
+  var activeElement$1 = null;
+  var activeElementInst$1 = null;
+  var lastSelection = null;
+  var mouseDown = false;
+  /**
+   * Get an object which is a unique representation of the current selection.
+   *
+   * The return value will not be consistent across nodes or browsers, but
+   * two identical selections on the same node will return identical objects.
+   *
+   * @param {DOMElement} node
+   * @return {object}
+   */
+
+  function getSelection$1(node) {
+    if ('selectionStart' in node && hasSelectionCapabilities(node)) {
+      return {
+        start: node.selectionStart,
+        end: node.selectionEnd
+      };
+    } else {
+      var win = node.ownerDocument && node.ownerDocument.defaultView || window;
+      var selection = win.getSelection();
+      return {
+        anchorNode: selection.anchorNode,
+        anchorOffset: selection.anchorOffset,
+        focusNode: selection.focusNode,
+        focusOffset: selection.focusOffset
+      };
+    }
+  }
+  /**
+   * Get document associated with the event target.
+   *
+   * @param {object} nativeEventTarget
+   * @return {Document}
+   */
+
+
+  function getEventTargetDocument(eventTarget) {
+    return eventTarget.window === eventTarget ? eventTarget.document : eventTarget.nodeType === DOCUMENT_NODE ? eventTarget : eventTarget.ownerDocument;
+  }
+  /**
+   * Poll selection to see whether it's changed.
+   *
+   * @param {object} nativeEvent
+   * @param {object} nativeEventTarget
+   * @return {?SyntheticEvent}
+   */
+
+
+  function constructSelectEvent(nativeEvent, nativeEventTarget) {
+    // Ensure we have the right element, and that the user is not dragging a
+    // selection (this matches native `select` event behavior). In HTML5, select
+    // fires only on input and textarea thus if there's no focused element we
+    // won't dispatch.
+    var doc = getEventTargetDocument(nativeEventTarget);
+
+    if (mouseDown || activeElement$1 == null || activeElement$1 !== getActiveElement(doc)) {
+      return null;
+    } // Only fire when selection has actually changed.
+
+
+    var currentSelection = getSelection$1(activeElement$1);
+
+    if (!lastSelection || !shallowEqual(lastSelection, currentSelection)) {
+      lastSelection = currentSelection;
+      var syntheticEvent = SyntheticEvent.getPooled(eventTypes$3.select, activeElementInst$1, nativeEvent, nativeEventTarget);
+      syntheticEvent.type = 'select';
+      syntheticEvent.target = activeElement$1;
+      accumulateTwoPhaseDispatches(syntheticEvent);
+      return syntheticEvent;
+    }
+
+    return null;
+  }
+  /**
+   * This plugin creates an `onSelect` event that normalizes select events
+   * across form elements.
+   *
+   * Supported elements are:
+   * - input (see `isTextInputElement`)
+   * - textarea
+   * - contentEditable
+   *
+   * This differs from native browser implementations in the following ways:
+   * - Fires on contentEditable fields as well as inputs.
+   * - Fires for collapsed selection.
+   * - Fires after user input.
+   */
+
+
+  var SelectEventPlugin = {
+    eventTypes: eventTypes$3,
+    extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags, container) {
+      var containerOrDoc = container || getEventTargetDocument(nativeEventTarget); // Track whether all listeners exists for this plugin. If none exist, we do
+      // not extract events. See #3639.
+
+      if (!containerOrDoc || !isListeningToAllDependencies('onSelect', containerOrDoc)) {
+        return null;
+      }
+
+      var targetNode = targetInst ? getNodeFromInstance$1(targetInst) : window;
+
+      switch (topLevelType) {
+        // Track the input node that has focus.
+        case TOP_FOCUS:
+          if (isTextInputElement(targetNode) || targetNode.contentEditable === 'true') {
+            activeElement$1 = targetNode;
+            activeElementInst$1 = targetInst;
+            lastSelection = null;
+          }
+
+          break;
+
+        case TOP_BLUR:
+          activeElement$1 = null;
+          activeElementInst$1 = null;
+          lastSelection = null;
+          break;
+        // Don't fire the event while the user is dragging. This matches the
+        // semantics of the native select event.
+
+        case TOP_MOUSE_DOWN:
+          mouseDown = true;
+          break;
+
+        case TOP_CONTEXT_MENU:
+        case TOP_MOUSE_UP:
+        case TOP_DRAG_END:
+          mouseDown = false;
+          return constructSelectEvent(nativeEvent, nativeEventTarget);
+        // Chrome and IE fire non-standard event when selection is changed (and
+        // sometimes when it hasn't). IE's event fires out of order with respect
+        // to key and input events on deletion, so we discard it.
+        //
+        // Firefox doesn't support selectionchange, so check selection status
+        // after each key entry. The selection changes after keydown and before
+        // keyup, but we check on keydown as well in the case of holding down a
+        // key, when multiple keydown events are fired but only one keyup is.
+        // This is also our approach for IE handling, for the reason above.
+
+        case TOP_SELECTION_CHANGE:
+          if (skipSelectionChangeEvent) {
+            break;
+          }
+
+        // falls through
+
+        case TOP_KEY_DOWN:
+        case TOP_KEY_UP:
+          return constructSelectEvent(nativeEvent, nativeEventTarget);
+      }
+
+      return null;
+    }
+  };
+
+  /**
+   * @interface Event
+   * @see http://www.w3.org/TR/css3-animations/#AnimationEvent-interface
+   * @see https://developer.mozilla.org/en-US/docs/Web/API/AnimationEvent
+   */
+
+  var SyntheticAnimationEvent = SyntheticEvent.extend({
+    animationName: null,
+    elapsedTime: null,
+    pseudoElement: null
+  });
+
+  /**
+   * @interface Event
+   * @see http://www.w3.org/TR/clipboard-apis/
+   */
+
+  var SyntheticClipboardEvent = SyntheticEvent.extend({
+    clipboardData: function (event) {
+      return 'clipboardData' in event ? event.clipboardData : window.clipboardData;
+    }
+  });
+
+  /**
+   * @interface FocusEvent
+   * @see http://www.w3.org/TR/DOM-Level-3-Events/
+   */
+
+  var SyntheticFocusEvent = SyntheticUIEvent.extend({
+    relatedTarget: null
+  });
+
+  /**
+   * `charCode` represents the actual "character code" and is safe to use with
+   * `String.fromCharCode`. As such, only keys that correspond to printable
+   * characters produce a valid `charCode`, the only exception to this is Enter.
+   * The Tab-key is considered non-printable and does not have a `charCode`,
+   * presumably because it does not produce a tab-character in browsers.
+   *
+   * @param {object} nativeEvent Native browser event.
+   * @return {number} Normalized `charCode` property.
+   */
+  function getEventCharCode(nativeEvent) {
+    var charCode;
+    var keyCode = nativeEvent.keyCode;
+
+    if ('charCode' in nativeEvent) {
+      charCode = nativeEvent.charCode; // FF does not set `charCode` for the Enter-key, check against `keyCode`.
+
+      if (charCode === 0 && keyCode === 13) {
+        charCode = 13;
+      }
+    } else {
+      // IE8 does not implement `charCode`, but `keyCode` has the correct value.
+      charCode = keyCode;
+    } // IE and Edge (on Windows) and Chrome / Safari (on Windows and Linux)
+    // report Enter as charCode 10 when ctrl is pressed.
+
+
+    if (charCode === 10) {
+      charCode = 13;
+    } // Some non-printable keys are reported in `charCode`/`keyCode`, discard them.
+    // Must not discard the (non-)printable Enter-key.
+
+
+    if (charCode >= 32 || charCode === 13) {
+      return charCode;
+    }
+
+    return 0;
+  }
+
+  /**
+   * Normalization of deprecated HTML5 `key` values
+   * @see https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent#Key_names
+   */
+
+  var normalizeKey = {
+    Esc: 'Escape',
+    Spacebar: ' ',
+    Left: 'ArrowLeft',
+    Up: 'ArrowUp',
+    Right: 'ArrowRight',
+    Down: 'ArrowDown',
+    Del: 'Delete',
+    Win: 'OS',
+    Menu: 'ContextMenu',
+    Apps: 'ContextMenu',
+    Scroll: 'ScrollLock',
+    MozPrintableKey: 'Unidentified'
+  };
+  /**
+   * Translation from legacy `keyCode` to HTML5 `key`
+   * Only special keys supported, all others depend on keyboard layout or browser
+   * @see https://developer.mozilla.org/en-US/docs/Web/API/KeyboardEvent#Key_names
+   */
+
+  var translateToKey = {
+    '8': 'Backspace',
+    '9': 'Tab',
+    '12': 'Clear',
+    '13': 'Enter',
+    '16': 'Shift',
+    '17': 'Control',
+    '18': 'Alt',
+    '19': 'Pause',
+    '20': 'CapsLock',
+    '27': 'Escape',
+    '32': ' ',
+    '33': 'PageUp',
+    '34': 'PageDown',
+    '35': 'End',
+    '36': 'Home',
+    '37': 'ArrowLeft',
+    '38': 'ArrowUp',
+    '39': 'ArrowRight',
+    '40': 'ArrowDown',
+    '45': 'Insert',
+    '46': 'Delete',
+    '112': 'F1',
+    '113': 'F2',
+    '114': 'F3',
+    '115': 'F4',
+    '116': 'F5',
+    '117': 'F6',
+    '118': 'F7',
+    '119': 'F8',
+    '120': 'F9',
+    '121': 'F10',
+    '122': 'F11',
+    '123': 'F12',
+    '144': 'NumLock',
+    '145': 'ScrollLock',
+    '224': 'Meta'
+  };
+  /**
+   * @param {object} nativeEvent Native browser event.
+   * @return {string} Normalized `key` property.
+   */
+
+  function getEventKey(nativeEvent) {
+    if (nativeEvent.key) {
+      // Normalize inconsistent values reported by browsers due to
+      // implementations of a working draft specification.
+      // FireFox implements `key` but returns `MozPrintableKey` for all
+      // printable characters (normalized to `Unidentified`), ignore it.
+      var key = normalizeKey[nativeEvent.key] || nativeEvent.key;
+
+      if (key !== 'Unidentified') {
+        return key;
+      }
+    } // Browser does not implement `key`, polyfill as much of it as we can.
+
+
+    if (nativeEvent.type === 'keypress') {
+      var charCode = getEventCharCode(nativeEvent); // The enter-key is technically both printable and non-printable and can
+      // thus be captured by `keypress`, no other non-printable key should.
+
+      return charCode === 13 ? 'Enter' : String.fromCharCode(charCode);
+    }
+
+    if (nativeEvent.type === 'keydown' || nativeEvent.type === 'keyup') {
+      // While user keyboard layout determines the actual meaning of each
+      // `keyCode` value, almost all function keys have a universal value.
+      return translateToKey[nativeEvent.keyCode] || 'Unidentified';
+    }
+
+    return '';
+  }
+
+  /**
+   * @interface KeyboardEvent
+   * @see http://www.w3.org/TR/DOM-Level-3-Events/
+   */
+
+  var SyntheticKeyboardEvent = SyntheticUIEvent.extend({
+    key: getEventKey,
+    location: null,
+    ctrlKey: null,
+    shiftKey: null,
+    altKey: null,
+    metaKey: null,
+    repeat: null,
+    locale: null,
+    getModifierState: getEventModifierState,
+    // Legacy Interface
+    charCode: function (event) {
+      // `charCode` is the result of a KeyPress event and represents the value of
+      // the actual printable character.
+      // KeyPress is deprecated, but its replacement is not yet final and not
+      // implemented in any major browser. Only KeyPress has charCode.
+      if (event.type === 'keypress') {
+        return getEventCharCode(event);
+      }
+
+      return 0;
+    },
+    keyCode: function (event) {
+      // `keyCode` is the result of a KeyDown/Up event and represents the value of
+      // physical keyboard key.
+      // The actual meaning of the value depends on the users' keyboard layout
+      // which cannot be detected. Assuming that it is a US keyboard layout
+      // provides a surprisingly accurate mapping for US and European users.
+      // Due to this, it is left to the user to implement at this time.
+      if (event.type === 'keydown' || event.type === 'keyup') {
+        return event.keyCode;
+      }
+
+      return 0;
+    },
+    which: function (event) {
+      // `which` is an alias for either `keyCode` or `charCode` depending on the
+      // type of the event.
+      if (event.type === 'keypress') {
+        return getEventCharCode(event);
+      }
+
+      if (event.type === 'keydown' || event.type === 'keyup') {
+        return event.keyCode;
+      }
+
+      return 0;
+    }
+  });
+
+  /**
+   * @interface DragEvent
+   * @see http://www.w3.org/TR/DOM-Level-3-Events/
+   */
+
+  var SyntheticDragEvent = SyntheticMouseEvent.extend({
+    dataTransfer: null
+  });
+
+  /**
+   * @interface TouchEvent
+   * @see http://www.w3.org/TR/touch-events/
+   */
+
+  var SyntheticTouchEvent = SyntheticUIEvent.extend({
+    touches: null,
+    targetTouches: null,
+    changedTouches: null,
+    altKey: null,
+    metaKey: null,
+    ctrlKey: null,
+    shiftKey: null,
+    getModifierState: getEventModifierState
+  });
+
+  /**
+   * @interface Event
+   * @see http://www.w3.org/TR/2009/WD-css3-transitions-20090320/#transition-events-
+   * @see https://developer.mozilla.org/en-US/docs/Web/API/TransitionEvent
+   */
+
+  var SyntheticTransitionEvent = SyntheticEvent.extend({
+    propertyName: null,
+    elapsedTime: null,
+    pseudoElement: null
+  });
+
+  /**
+   * @interface WheelEvent
+   * @see http://www.w3.org/TR/DOM-Level-3-Events/
+   */
+
+  var SyntheticWheelEvent = SyntheticMouseEvent.extend({
+    deltaX: function (event) {
+      return 'deltaX' in event ? event.deltaX : // Fallback to `wheelDeltaX` for Webkit and normalize (right is positive).
+      'wheelDeltaX' in event ? -event.wheelDeltaX : 0;
+    },
+    deltaY: function (event) {
+      return 'deltaY' in event ? event.deltaY : // Fallback to `wheelDeltaY` for Webkit and normalize (down is positive).
+      'wheelDeltaY' in event ? -event.wheelDeltaY : // Fallback to `wheelDelta` for IE<9 and normalize (down is positive).
+      'wheelDelta' in event ? -event.wheelDelta : 0;
+    },
+    deltaZ: null,
+    // Browsers without "deltaMode" is reporting in raw wheel delta where one
+    // notch on the scroll is always +/- 120, roughly equivalent to pixels.
+    // A good approximation of DOM_DELTA_LINE (1) is 5% of viewport size or
+    // ~40 pixels, for DOM_DELTA_SCREEN (2) it is 87.5% of viewport size.
+    deltaMode: null
+  });
+
+  var knownHTMLTopLevelTypes = [TOP_ABORT, TOP_CANCEL, TOP_CAN_PLAY, TOP_CAN_PLAY_THROUGH, TOP_CLOSE, TOP_DURATION_CHANGE, TOP_EMPTIED, TOP_ENCRYPTED, TOP_ENDED, TOP_ERROR, TOP_INPUT, TOP_INVALID, TOP_LOAD, TOP_LOADED_DATA, TOP_LOADED_METADATA, TOP_LOAD_START, TOP_PAUSE, TOP_PLAY, TOP_PLAYING, TOP_PROGRESS, TOP_RATE_CHANGE, TOP_RESET, TOP_SEEKED, TOP_SEEKING, TOP_STALLED, TOP_SUBMIT, TOP_SUSPEND, TOP_TIME_UPDATE, TOP_TOGGLE, TOP_VOLUME_CHANGE, TOP_WAITING];
+  var SimpleEventPlugin = {
+    // simpleEventPluginEventTypes gets populated from
+    // the DOMEventProperties module.
+    eventTypes: simpleEventPluginEventTypes,
+    extractEvents: function (topLevelType, targetInst, nativeEvent, nativeEventTarget, eventSystemFlags) {
+      var dispatchConfig = topLevelEventsToDispatchConfig.get(topLevelType);
+
+      if (!dispatchConfig) {
+        return null;
+      }
+
+      var EventConstructor;
+
+      switch (topLevelType) {
+        case TOP_KEY_PRESS:
+          // Firefox creates a keypress event for function keys too. This removes
+          // the unwanted keypress events. Enter is however both printable and
+          // non-printable. One would expect Tab to be as well (but it isn't).
+          if (getEventCharCode(nativeEvent) === 0) {
+            return null;
+          }
+
+        /* falls through */
+
+        case TOP_KEY_DOWN:
+        case TOP_KEY_UP:
+          EventConstructor = SyntheticKeyboardEvent;
+          break;
+
+        case TOP_BLUR:
+        case TOP_FOCUS:
+          EventConstructor = SyntheticFocusEvent;
+          break;
+
+        case TOP_CLICK:
+          // Firefox creates a click event on right mouse clicks. This removes the
+          // unwanted click events.
+          if (nativeEvent.button === 2) {
+            return null;
+          }
+
+        /* falls through */
+
+        case TOP_AUX_CLICK:
+        case TOP_DOUBLE_CLICK:
+        case TOP_MOUSE_DOWN:
+        case TOP_MOUSE_MOVE:
+        case TOP_MOUSE_UP: // TODO: Disabled elements should not respond to mouse events
+
+        /* falls through */
+
+        case TOP_MOUSE_OUT:
+        case TOP_MOUSE_OVER:
+        case TOP_CONTEXT_MENU:
+          EventConstructor = SyntheticMouseEvent;
+          break;
+
+        case TOP_DRAG:
+        case TOP_DRAG_END:
+        case TOP_DRAG_ENTER:
+        case TOP_DRAG_EXIT:
+        case TOP_DRAG_LEAVE:
+        case TOP_DRAG_OVER:
+        case TOP_DRAG_START:
+        case TOP_DROP:
+          EventConstructor = SyntheticDragEvent;
+          break;
+
+        case TOP_TOUCH_CANCEL:
+        case TOP_TOUCH_END:
+        case TOP_TOUCH_MOVE:
+        case TOP_TOUCH_START:
+          EventConstructor = SyntheticTouchEvent;
+          break;
+
+        case TOP_ANIMATION_END:
+        case TOP_ANIMATION_ITERATION:
+        case TOP_ANIMATION_START:
+          EventConstructor = SyntheticAnimationEvent;
+          break;
+
+        case TOP_TRANSITION_END:
+          EventConstructor = SyntheticTransitionEvent;
+          break;
+
+        case TOP_SCROLL:
+          EventConstructor = SyntheticUIEvent;
+          break;
+
+        case TOP_WHEEL:
+          EventConstructor = SyntheticWheelEvent;
+          break;
+
+        case TOP_COPY:
+        case TOP_CUT:
+        case TOP_PASTE:
+          EventConstructor = SyntheticClipboardEvent;
+          break;
+
+        case TOP_GOT_POINTER_CAPTURE:
+        case TOP_LOST_POINTER_CAPTURE:
+        case TOP_POINTER_CANCEL:
+        case TOP_POINTER_DOWN:
+        case TOP_POINTER_MOVE:
+        case TOP_POINTER_OUT:
+        case TOP_POINTER_OVER:
+        case TOP_POINTER_UP:
+          EventConstructor = SyntheticPointerEvent;
+          break;
+
+        default:
+          {
+            if (knownHTMLTopLevelTypes.indexOf(topLevelType) === -1) {
+              error('SimpleEventPlugin: Unhandled event type, `%s`. This warning ' + 'is likely caused by a bug in React. Please file an issue.', topLevelType);
+            }
+          } // HTML Events
+          // @see http://www.w3.org/TR/html5/index.html#events-0
+
+
+          EventConstructor = SyntheticEvent;
+          break;
+      }
+
+      var event = EventConstructor.getPooled(dispatchConfig, targetInst, nativeEvent, nativeEventTarget);
+      accumulateTwoPhaseDispatches(event);
+      return event;
+    }
+  };
+
+  /**
+   * Specifies a deterministic ordering of `EventPlugin`s. A convenient way to
+   * reason about plugins, without having to package every one of them. This
+   * is better than having plugins be ordered in the same order that they
+   * are injected because that ordering would be influenced by the packaging order.
+   * `ResponderEventPlugin` must occur before `SimpleEventPlugin` so that
+   * preventing default on events is convenient in `SimpleEventPlugin` handlers.
+   */
+
+  var DOMEventPluginOrder = ['ResponderEventPlugin', 'SimpleEventPlugin', 'EnterLeaveEventPlugin', 'ChangeEventPlugin', 'SelectEventPlugin', 'BeforeInputEventPlugin'];
+  /**
+   * Inject modules for resolving DOM hierarchy and plugin ordering.
+   */
+
+  injectEventPluginOrder(DOMEventPluginOrder);
+  setComponentTree(getFiberCurrentPropsFromNode$1, getInstanceFromNode$1, getNodeFromInstance$1);
+  /**
+   * Some important event plugins included by default (without having to require
+   * them).
+   */
+
+  injectEventPluginsByName({
+    SimpleEventPlugin: SimpleEventPlugin,
+    EnterLeaveEventPlugin: EnterLeaveEventPlugin,
+    ChangeEventPlugin: ChangeEventPlugin,
+    SelectEventPlugin: SelectEventPlugin,
+    BeforeInputEventPlugin: BeforeInputEventPlugin
+  });
+
+  // Prefix measurements so that it's possible to filter them.
+  // Longer prefixes are hard to read in DevTools.
+  var reactEmoji = "\u269B";
+  var warningEmoji = "\u26D4";
+  var supportsUserTiming = typeof performance !== 'undefined' && typeof performance.mark === 'function' && typeof performance.clearMarks === 'function' && typeof performance.measure === 'function' && typeof performance.clearMeasures === 'function'; // Keep track of current fiber so that we know the path to unwind on pause.
+  // TODO: this looks the same as nextUnitOfWork in scheduler. Can we unify them?
+
+  var currentFiber = null; // If we're in the middle of user code, which fiber and method is it?
+  // Reusing `currentFiber` would be confusing for this because user code fiber
+  // can change during commit phase too, but we don't need to unwind it (since
+  // lifecycles in the commit phase don't resemble a tree).
+
+  var currentPhase = null;
+  var currentPhaseFiber = null; // Did lifecycle hook schedule an update? This is often a performance problem,
+  // so we will keep track of it, and include it in the report.
+  // Track commits caused by cascading updates.
+
+  var isCommitting = false;
+  var hasScheduledUpdateInCurrentCommit = false;
+  var hasScheduledUpdateInCurrentPhase = false;
+  var commitCountInCurrentWorkLoop = 0;
+  var effectCountInCurrentCommit = 0;
+  // to avoid stretch the commit phase with measurement overhead.
+
+  var labelsInCurrentCommit = new Set();
+
+  var formatMarkName = function (markName) {
+    return reactEmoji + " " + markName;
+  };
+
+  var formatLabel = function (label, warning) {
+    var prefix = warning ? warningEmoji + " " : reactEmoji + " ";
+    var suffix = warning ? " Warning: " + warning : '';
+    return "" + prefix + label + suffix;
+  };
+
+  var beginMark = function (markName) {
+    performance.mark(formatMarkName(markName));
+  };
+
+  var clearMark = function (markName) {
+    performance.clearMarks(formatMarkName(markName));
+  };
+
+  var endMark = function (label, markName, warning) {
+    var formattedMarkName = formatMarkName(markName);
+    var formattedLabel = formatLabel(label, warning);
+
+    try {
+      performance.measure(formattedLabel, formattedMarkName);
+    } catch (err) {} // If previous mark was missing for some reason, this will throw.
+    // This could only happen if React crashed in an unexpected place earlier.
+    // Don't pile on with more errors.
+    // Clear marks immediately to avoid growing buffer.
+
+
+    performance.clearMarks(formattedMarkName);
+    performance.clearMeasures(formattedLabel);
+  };
+
+  var getFiberMarkName = function (label, debugID) {
+    return label + " (#" + debugID + ")";
+  };
+
+  var getFiberLabel = function (componentName, isMounted, phase) {
+    if (phase === null) {
+      // These are composite component total time measurements.
+      return componentName + " [" + (isMounted ? 'update' : 'mount') + "]";
+    } else {
+      // Composite component methods.
+      return componentName + "." + phase;
+    }
+  };
+
+  var beginFiberMark = function (fiber, phase) {
+    var componentName = getComponentName(fiber.type) || 'Unknown';
+    var debugID = fiber._debugID;
+    var isMounted = fiber.alternate !== null;
+    var label = getFiberLabel(componentName, isMounted, phase);
+
+    if (isCommitting && labelsInCurrentCommit.has(label)) {
+      // During the commit phase, we don't show duplicate labels because
+      // there is a fixed overhead for every measurement, and we don't
+      // want to stretch the commit phase beyond necessary.
+      return false;
+    }
+
+    labelsInCurrentCommit.add(label);
+    var markName = getFiberMarkName(label, debugID);
+    beginMark(markName);
+    return true;
+  };
+
+  var clearFiberMark = function (fiber, phase) {
+    var componentName = getComponentName(fiber.type) || 'Unknown';
+    var debugID = fiber._debugID;
+    var isMounted = fiber.alternate !== null;
+    var label = getFiberLabel(componentName, isMounted, phase);
+    var markName = getFiberMarkName(label, debugID);
+    clearMark(markName);
+  };
+
+  var endFiberMark = function (fiber, phase, warning) {
+    var componentName = getComponentName(fiber.type) || 'Unknown';
+    var debugID = fiber._debugID;
+    var isMounted = fiber.alternate !== null;
+    var label = getFiberLabel(componentName, isMounted, phase);
+    var markName = getFiberMarkName(label, debugID);
+    endMark(label, markName, warning);
+  };
+
+  var shouldIgnoreFiber = function (fiber) {
+    // Host components should be skipped in the timeline.
+    // We could check typeof fiber.type, but does this work with RN?
+    switch (fiber.tag) {
+      case HostRoot:
+      case HostComponent:
+      case HostText:
+      case HostPortal:
+      case Fragment:
+      case ContextProvider:
+      case ContextConsumer:
+      case Mode:
+        return true;
+
+      default:
+        return false;
+    }
+  };
+
+  var clearPendingPhaseMeasurement = function () {
+    if (currentPhase !== null && currentPhaseFiber !== null) {
+      clearFiberMark(currentPhaseFiber, currentPhase);
+    }
+
+    currentPhaseFiber = null;
+    currentPhase = null;
+    hasScheduledUpdateInCurrentPhase = false;
+  };
+
+  var pauseTimers = function () {
+    // Stops all currently active measurements so that they can be resumed
+    // if we continue in a later deferred loop from the same unit of work.
+    var fiber = currentFiber;
+
+    while (fiber) {
+      if (fiber._debugIsCurrentlyTiming) {
+        endFiberMark(fiber, null, null);
+      }
+
+      fiber = fiber.return;
+    }
+  };
+
+  var resumeTimersRecursively = function (fiber) {
+    if (fiber.return !== null) {
+      resumeTimersRecursively(fiber.return);
+    }
+
+    if (fiber._debugIsCurrentlyTiming) {
+      beginFiberMark(fiber, null);
+    }
+  };
+
+  var resumeTimers = function () {
+    // Resumes all measurements that were active during the last deferred loop.
+    if (currentFiber !== null) {
+      resumeTimersRecursively(currentFiber);
+    }
+  };
+
+  function recordEffect() {
+    {
+      effectCountInCurrentCommit++;
+    }
+  }
+  function recordScheduleUpdate() {
+    {
+      if (isCommitting) {
+        hasScheduledUpdateInCurrentCommit = true;
+      }
+
+      if (currentPhase !== null && currentPhase !== 'componentWillMount' && currentPhase !== 'componentWillReceiveProps') {
+        hasScheduledUpdateInCurrentPhase = true;
+      }
+    }
+  }
+  function startWorkTimer(fiber) {
+    {
+      if (!supportsUserTiming || shouldIgnoreFiber(fiber)) {
+        return;
+      } // If we pause, this is the fiber to unwind from.
+
+
+      currentFiber = fiber;
+
+      if (!beginFiberMark(fiber, null)) {
+        return;
+      }
+
+      fiber._debugIsCurrentlyTiming = true;
+    }
+  }
+  function cancelWorkTimer(fiber) {
+    {
+      if (!supportsUserTiming || shouldIgnoreFiber(fiber)) {
+        return;
+      } // Remember we shouldn't complete measurement for this fiber.
+      // Otherwise flamechart will be deep even for small updates.
+
+
+      fiber._debugIsCurrentlyTiming = false;
+      clearFiberMark(fiber, null);
+    }
+  }
+  function stopWorkTimer(fiber) {
+    {
+      if (!supportsUserTiming || shouldIgnoreFiber(fiber)) {
+        return;
+      } // If we pause, its parent is the fiber to unwind from.
+
+
+      currentFiber = fiber.return;
+
+      if (!fiber._debugIsCurrentlyTiming) {
+        return;
+      }
+
+      fiber._debugIsCurrentlyTiming = false;
+      endFiberMark(fiber, null, null);
+    }
+  }
+  function stopFailedWorkTimer(fiber) {
+    {
+      if (!supportsUserTiming || shouldIgnoreFiber(fiber)) {
+        return;
+      } // If we pause, its parent is the fiber to unwind from.
+
+
+      currentFiber = fiber.return;
+
+      if (!fiber._debugIsCurrentlyTiming) {
+        return;
+      }
+
+      fiber._debugIsCurrentlyTiming = false;
+      var warning = fiber.tag === SuspenseComponent ? 'Rendering was suspended' : 'An error was thrown inside this error boundary';
+      endFiberMark(fiber, null, warning);
+    }
+  }
+  function startPhaseTimer(fiber, phase) {
+    {
+      if (!supportsUserTiming) {
+        return;
+      }
+
+      clearPendingPhaseMeasurement();
+
+      if (!beginFiberMark(fiber, phase)) {
+        return;
+      }
+
+      currentPhaseFiber = fiber;
+      currentPhase = phase;
+    }
+  }
+  function stopPhaseTimer() {
+    {
+      if (!supportsUserTiming) {
+        return;
+      }
+
+      if (currentPhase !== null && currentPhaseFiber !== null) {
+        var warning = hasScheduledUpdateInCurrentPhase ? 'Scheduled a cascading update' : null;
+        endFiberMark(currentPhaseFiber, currentPhase, warning);
+      }
+
+      currentPhase = null;
+      currentPhaseFiber = null;
+    }
+  }
+  function startWorkLoopTimer(nextUnitOfWork) {
+    {
+      currentFiber = nextUnitOfWork;
+
+      if (!supportsUserTiming) {
+        return;
+      }
+
+      commitCountInCurrentWorkLoop = 0; // This is top level call.
+      // Any other measurements are performed within.
+
+      beginMark('(React Tree Reconciliation)'); // Resume any measurements that were in progress during the last loop.
+
+      resumeTimers();
+    }
+  }
+  function stopWorkLoopTimer(interruptedBy, didCompleteRoot) {
+    {
+      if (!supportsUserTiming) {
+        return;
+      }
+
+      var warning = null;
+
+      if (interruptedBy !== null) {
+        if (interruptedBy.tag === HostRoot) {
+          warning = 'A top-level update interrupted the previous render';
+        } else {
+          var componentName = getComponentName(interruptedBy.type) || 'Unknown';
+          warning = "An update to " + componentName + " interrupted the previous render";
+        }
+      } else if (commitCountInCurrentWorkLoop > 1) {
+        warning = 'There were cascading updates';
+      }
+
+      commitCountInCurrentWorkLoop = 0;
+      var label = didCompleteRoot ? '(React Tree Reconciliation: Completed Root)' : '(React Tree Reconciliation: Yielded)'; // Pause any measurements until the next loop.
+
+      pauseTimers();
+      endMark(label, '(React Tree Reconciliation)', warning);
+    }
+  }
+  function startCommitTimer() {
+    {
+      if (!supportsUserTiming) {
+        return;
+      }
+
+      isCommitting = true;
+      hasScheduledUpdateInCurrentCommit = false;
+      labelsInCurrentCommit.clear();
+      beginMark('(Committing Changes)');
+    }
+  }
+  function stopCommitTimer() {
+    {
+      if (!supportsUserTiming) {
+        return;
+      }
+
+      var warning = null;
+
+      if (hasScheduledUpdateInCurrentCommit) {
+        warning = 'Lifecycle hook scheduled a cascading update';
+      } else if (commitCountInCurrentWorkLoop > 0) {
+        warning = 'Caused by a cascading update in earlier commit';
+      }
+
+      hasScheduledUpdateInCurrentCommit = false;
+      commitCountInCurrentWorkLoop++;
+      isCommitting = false;
+      labelsInCurrentCommit.clear();
+      endMark('(Committing Changes)', '(Committing Changes)', warning);
+    }
+  }
+  function startCommitSnapshotEffectsTimer() {
+    {
+      if (!supportsUserTiming) {
+        return;
+      }
+
+      effectCountInCurrentCommit = 0;
+      beginMark('(Committing Snapshot Effects)');
+    }
+  }
+  function stopCommitSnapshotEffectsTimer() {
+    {
+      if (!supportsUserTiming) {
+        return;
+      }
+
+      var count = effectCountInCurrentCommit;
+      effectCountInCurrentCommit = 0;
+      endMark("(Committing Snapshot Effects: " + count + " Total)", '(Committing Snapshot Effects)', null);
+    }
+  }
+  function startCommitHostEffectsTimer() {
+    {
+      if (!supportsUserTiming) {
+        return;
+      }
+
+      effectCountInCurrentCommit = 0;
+      beginMark('(Committing Host Effects)');
+    }
+  }
+  function stopCommitHostEffectsTimer() {
+    {
+      if (!supportsUserTiming) {
+        return;
+      }
+
+      var count = effectCountInCurrentCommit;
+      effectCountInCurrentCommit = 0;
+      endMark("(Committing Host Effects: " + count + " Total)", '(Committing Host Effects)', null);
+    }
+  }
+  function startCommitLifeCyclesTimer() {
+    {
+      if (!supportsUserTiming) {
+        return;
+      }
+
+      effectCountInCurrentCommit = 0;
+      beginMark('(Calling Lifecycle Methods)');
+    }
+  }
+  function stopCommitLifeCyclesTimer() {
+    {
+      if (!supportsUserTiming) {
+        return;
+      }
+
+      var count = effectCountInCurrentCommit;
+      effectCountInCurrentCommit = 0;
+      endMark("(Calling Lifecycle Methods: " + count + " Total)", '(Calling Lifecycle Methods)', null);
+    }
+  }
+
+  var valueStack = [];
+  var fiberStack;
+
+  {
+    fiberStack = [];
+  }
+
+  var index = -1;
+
+  function createCursor(defaultValue) {
+    return {
+      current: defaultValue
+    };
+  }
+
+  function pop(cursor, fiber) {
+    if (index < 0) {
+      {
+        error('Unexpected pop.');
+      }
+
+      return;
+    }
+
+    {
+      if (fiber !== fiberStack[index]) {
+        error('Unexpected Fiber popped.');
+      }
+    }
+
+    cursor.current = valueStack[index];
+    valueStack[index] = null;
+
+    {
+      fiberStack[index] = null;
+    }
+
+    index--;
+  }
+
+  function push(cursor, value, fiber) {
+    index++;
+    valueStack[index] = cursor.current;
+
+    {
+      fiberStack[index] = fiber;
+    }
+
+    cursor.current = value;
+  }
+
+  var warnedAboutMissingGetChildContext;
+
+  {
+    warnedAboutMissingGetChildContext = {};
+  }
+
+  var emptyContextObject = {};
+
+  {
+    Object.freeze(emptyContextObject);
+  } // A cursor to the current merged context object on the stack.
+
+
+  var contextStackCursor = createCursor(emptyContextObject); // A cursor to a boolean indicating whether the context has changed.
+
+  var didPerformWorkStackCursor = createCursor(false); // Keep track of the previous context object that was on the stack.
+  // We use this to get access to the parent context after we have already
+  // pushed the next context provider, and now need to merge their contexts.
+
+  var previousContext = emptyContextObject;
+
+  function getUnmaskedContext(workInProgress, Component, didPushOwnContextIfProvider) {
+    {
+      if (didPushOwnContextIfProvider && isContextProvider(Component)) {
+        // If the fiber is a context provider itself, when we read its context
+        // we may have already pushed its own child context on the stack. A context
+        // provider should not "see" its own child context. Therefore we read the
+        // previous (parent) context instead for a context provider.
+        return previousContext;
+      }
+
+      return contextStackCursor.current;
+    }
+  }
+
+  function cacheContext(workInProgress, unmaskedContext, maskedContext) {
+    {
+      var instance = workInProgress.stateNode;
+      instance.__reactInternalMemoizedUnmaskedChildContext = unmaskedContext;
+      instance.__reactInternalMemoizedMaskedChildContext = maskedContext;
+    }
+  }
+
+  function getMaskedContext(workInProgress, unmaskedContext) {
+    {
+      var type = workInProgress.type;
+      var contextTypes = type.contextTypes;
+
+      if (!contextTypes) {
+        return emptyContextObject;
+      } // Avoid recreating masked context unless unmasked context has changed.
+      // Failing to do this will result in unnecessary calls to componentWillReceiveProps.
+      // This may trigger infinite loops if componentWillReceiveProps calls setState.
+
+
+      var instance = workInProgress.stateNode;
+
+      if (instance && instance.__reactInternalMemoizedUnmaskedChildContext === unmaskedContext) {
+        return instance.__reactInternalMemoizedMaskedChildContext;
+      }
+
+      var context = {};
+
+      for (var key in contextTypes) {
+        context[key] = unmaskedContext[key];
+      }
+
+      {
+        var name = getComponentName(type) || 'Unknown';
+        checkPropTypes_1(contextTypes, context, 'context', name, getCurrentFiberStackInDev);
+      } // Cache unmasked context so we can avoid recreating masked context unless necessary.
+      // Context is created before the class component is instantiated so check for instance.
+
+
+      if (instance) {
+        cacheContext(workInProgress, unmaskedContext, context);
+      }
+
+      return context;
+    }
+  }
+
+  function hasContextChanged() {
+    {
+      return didPerformWorkStackCursor.current;
+    }
+  }
+
+  function isContextProvider(type) {
+    {
+      var childContextTypes = type.childContextTypes;
+      return childContextTypes !== null && childContextTypes !== undefined;
+    }
+  }
+
+  function popContext(fiber) {
+    {
+      pop(didPerformWorkStackCursor, fiber);
+      pop(contextStackCursor, fiber);
+    }
+  }
+
+  function popTopLevelContextObject(fiber) {
+    {
+      pop(didPerformWorkStackCursor, fiber);
+      pop(contextStackCursor, fiber);
+    }
+  }
+
+  function pushTopLevelContextObject(fiber, context, didChange) {
+    {
+      if (!(contextStackCursor.current === emptyContextObject)) {
+        {
+          throw Error( "Unexpected context found on stack. This error is likely caused by a bug in React. Please file an issue." );
+        }
+      }
+
+      push(contextStackCursor, context, fiber);
+      push(didPerformWorkStackCursor, didChange, fiber);
+    }
+  }
+
+  function processChildContext(fiber, type, parentContext) {
+    {
+      var instance = fiber.stateNode;
+      var childContextTypes = type.childContextTypes; // TODO (bvaughn) Replace this behavior with an invariant() in the future.
+      // It has only been added in Fiber to match the (unintentional) behavior in Stack.
+
+      if (typeof instance.getChildContext !== 'function') {
+        {
+          var componentName = getComponentName(type) || 'Unknown';
+
+          if (!warnedAboutMissingGetChildContext[componentName]) {
+            warnedAboutMissingGetChildContext[componentName] = true;
+
+            error('%s.childContextTypes is specified but there is no getChildContext() method ' + 'on the instance. You can either define getChildContext() on %s or remove ' + 'childContextTypes from it.', componentName, componentName);
+          }
+        }
+
+        return parentContext;
+      }
+
+      var childContext;
+      startPhaseTimer(fiber, 'getChildContext');
+      childContext = instance.getChildContext();
+      stopPhaseTimer();
+
+      for (var contextKey in childContext) {
+        if (!(contextKey in childContextTypes)) {
+          {
+            throw Error( (getComponentName(type) || 'Unknown') + ".getChildContext(): key \"" + contextKey + "\" is not defined in childContextTypes." );
+          }
+        }
+      }
+
+      {
+        var name = getComponentName(type) || 'Unknown';
+        checkPropTypes_1(childContextTypes, childContext, 'child context', name, // In practice, there is one case in which we won't get a stack. It's when
+        // somebody calls unstable_renderSubtreeIntoContainer() and we process
+        // context from the parent component instance. The stack will be missing
+        // because it's outside of the reconciliation, and so the pointer has not
+        // been set. This is rare and doesn't matter. We'll also remove that API.
+        getCurrentFiberStackInDev);
+      }
+
+      return _assign({}, parentContext, {}, childContext);
+    }
+  }
+
+  function pushContextProvider(workInProgress) {
+    {
+      var instance = workInProgress.stateNode; // We push the context as early as possible to ensure stack integrity.
+      // If the instance does not exist yet, we will push null at first,
+      // and replace it on the stack later when invalidating the context.
+
+      var memoizedMergedChildContext = instance && instance.__reactInternalMemoizedMergedChildContext || emptyContextObject; // Remember the parent context so we can merge with it later.
+      // Inherit the parent's did-perform-work value to avoid inadvertently blocking updates.
+
+      previousContext = contextStackCursor.current;
+      push(contextStackCursor, memoizedMergedChildContext, workInProgress);
+      push(didPerformWorkStackCursor, didPerformWorkStackCursor.current, workInProgress);
+      return true;
+    }
+  }
+
+  function invalidateContextProvider(workInProgress, type, didChange) {
+    {
+      var instance = workInProgress.stateNode;
+
+      if (!instance) {
+        {
+          throw Error( "Expected to have an instance by this point. This error is likely caused by a bug in React. Please file an issue." );
+        }
+      }
+
+      if (didChange) {
+        // Merge parent and own context.
+        // Skip this if we're not updating due to sCU.
+        // This avoids unnecessarily recomputing memoized values.
+        var mergedContext = processChildContext(workInProgress, type, previousContext);
+        instance.__reactInternalMemoizedMergedChildContext = mergedContext; // Replace the old (or empty) context with the new one.
+        // It is important to unwind the context in the reverse order.
+
+        pop(didPerformWorkStackCursor, workInProgress);
+        pop(contextStackCursor, workInProgress); // Now push the new context and mark that it has changed.
+
+        push(contextStackCursor, mergedContext, workInProgress);
+        push(didPerformWorkStackCursor, didChange, workInProgress);
+      } else {
+        pop(didPerformWorkStackCursor, workInProgress);
+        push(didPerformWorkStackCursor, didChange, workInProgress);
+      }
+    }
+  }
+
+  function findCurrentUnmaskedContext(fiber) {
+    {
+      // Currently this is only used with renderSubtreeIntoContainer; not sure if it
+      // makes sense elsewhere
+      if (!(isFiberMounted(fiber) && fiber.tag === ClassComponent)) {
+        {
+          throw Error( "Expected subtree parent to be a mounted class component. This error is likely caused by a bug in React. Please file an issue." );
+        }
+      }
+
+      var node = fiber;
+
+      do {
+        switch (node.tag) {
+          case HostRoot:
+            return node.stateNode.context;
+
+          case ClassComponent:
+            {
+              var Component = node.type;
+
+              if (isContextProvider(Component)) {
+                return node.stateNode.__reactInternalMemoizedMergedChildContext;
+              }
+
+              break;
+            }
+        }
+
+        node = node.return;
+      } while (node !== null);
+
+      {
+        {
+          throw Error( "Found unexpected detached subtree parent. This error is likely caused by a bug in React. Please file an issue." );
+        }
+      }
+    }
+  }
+
+  var LegacyRoot = 0;
+  var BlockingRoot = 1;
+  var ConcurrentRoot = 2;
+
+  var ReactInternals$2 = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;
+  var _ReactInternals$Sched$1 = ReactInternals$2.SchedulerTracing,
+      __interactionsRef = _ReactInternals$Sched$1.__interactionsRef,
+      __subscriberRef = _ReactInternals$Sched$1.__subscriberRef,
+      unstable_clear = _ReactInternals$Sched$1.unstable_clear,
+      unstable_getCurrent = _ReactInternals$Sched$1.unstable_getCurrent,
+      unstable_getThreadID = _ReactInternals$Sched$1.unstable_getThreadID,
+      unstable_subscribe = _ReactInternals$Sched$1.unstable_subscribe,
+      unstable_trace = _ReactInternals$Sched$1.unstable_trace,
+      unstable_unsubscribe = _ReactInternals$Sched$1.unstable_unsubscribe,
+      unstable_wrap = _ReactInternals$Sched$1.unstable_wrap;
+
+  var Scheduler_runWithPriority = unstable_runWithPriority,
+      Scheduler_scheduleCallback = unstable_scheduleCallback,
+      Scheduler_cancelCallback = unstable_cancelCallback,
+      Scheduler_shouldYield = unstable_shouldYield,
+      Scheduler_requestPaint = unstable_requestPaint,
+      Scheduler_now = unstable_now,
+      Scheduler_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel,
+      Scheduler_ImmediatePriority = unstable_ImmediatePriority,
+      Scheduler_UserBlockingPriority = unstable_UserBlockingPriority,
+      Scheduler_NormalPriority = unstable_NormalPriority,
+      Scheduler_LowPriority = unstable_LowPriority,
+      Scheduler_IdlePriority = unstable_IdlePriority;
+
+  {
+    // Provide explicit error message when production+profiling bundle of e.g.
+    // react-dom is used with production (non-profiling) bundle of
+    // scheduler/tracing
+    if (!(__interactionsRef != null && __interactionsRef.current != null)) {
+      {
+        throw Error( "It is not supported to run the profiling version of a renderer (for example, `react-dom/profiling`) without also replacing the `scheduler/tracing` module with `scheduler/tracing-profiling`. Your bundler might have a setting for aliasing both modules. Learn more at http://fb.me/react-profiling" );
+      }
+    }
+  }
+
+  var fakeCallbackNode = {}; // Except for NoPriority, these correspond to Scheduler priorities. We use
+  // ascending numbers so we can compare them like numbers. They start at 90 to
+  // avoid clashing with Scheduler's priorities.
+
+  var ImmediatePriority = 99;
+  var UserBlockingPriority$1 = 98;
+  var NormalPriority = 97;
+  var LowPriority = 96;
+  var IdlePriority = 95; // NoPriority is the absence of priority. Also React-only.
+
+  var NoPriority = 90;
+  var shouldYield = Scheduler_shouldYield;
+  var requestPaint = // Fall back gracefully if we're running an older version of Scheduler.
+  Scheduler_requestPaint !== undefined ? Scheduler_requestPaint : function () {};
+  var syncQueue = null;
+  var immediateQueueCallbackNode = null;
+  var isFlushingSyncQueue = false;
+  var initialTimeMs = Scheduler_now(); // If the initial timestamp is reasonably small, use Scheduler's `now` directly.
+  // This will be the case for modern browsers that support `performance.now`. In
+  // older browsers, Scheduler falls back to `Date.now`, which returns a Unix
+  // timestamp. In that case, subtract the module initialization time to simulate
+  // the behavior of performance.now and keep our times small enough to fit
+  // within 32 bits.
+  // TODO: Consider lifting this into Scheduler.
+
+  var now = initialTimeMs < 10000 ? Scheduler_now : function () {
+    return Scheduler_now() - initialTimeMs;
+  };
+  function getCurrentPriorityLevel() {
+    switch (Scheduler_getCurrentPriorityLevel()) {
+      case Scheduler_ImmediatePriority:
+        return ImmediatePriority;
+
+      case Scheduler_UserBlockingPriority:
+        return UserBlockingPriority$1;
+
+      case Scheduler_NormalPriority:
+        return NormalPriority;
+
+      case Scheduler_LowPriority:
+        return LowPriority;
+
+      case Scheduler_IdlePriority:
+        return IdlePriority;
+
+      default:
+        {
+          {
+            throw Error( "Unknown priority level." );
+          }
+        }
+
+    }
+  }
+
+  function reactPriorityToSchedulerPriority(reactPriorityLevel) {
+    switch (reactPriorityLevel) {
+      case ImmediatePriority:
+        return Scheduler_ImmediatePriority;
+
+      case UserBlockingPriority$1:
+        return Scheduler_UserBlockingPriority;
+
+      case NormalPriority:
+        return Scheduler_NormalPriority;
+
+      case LowPriority:
+        return Scheduler_LowPriority;
+
+      case IdlePriority:
+        return Scheduler_IdlePriority;
+
+      default:
+        {
+          {
+            throw Error( "Unknown priority level." );
+          }
+        }
+
+    }
+  }
+
+  function runWithPriority$1(reactPriorityLevel, fn) {
+    var priorityLevel = reactPriorityToSchedulerPriority(reactPriorityLevel);
+    return Scheduler_runWithPriority(priorityLevel, fn);
+  }
+  function scheduleCallback(reactPriorityLevel, callback, options) {
+    var priorityLevel = reactPriorityToSchedulerPriority(reactPriorityLevel);
+    return Scheduler_scheduleCallback(priorityLevel, callback, options);
+  }
+  function scheduleSyncCallback(callback) {
+    // Push this callback into an internal queue. We'll flush these either in
+    // the next tick, or earlier if something calls `flushSyncCallbackQueue`.
+    if (syncQueue === null) {
+      syncQueue = [callback]; // Flush the queue in the next tick, at the earliest.
+
+      immediateQueueCallbackNode = Scheduler_scheduleCallback(Scheduler_ImmediatePriority, flushSyncCallbackQueueImpl);
+    } else {
+      // Push onto existing queue. Don't need to schedule a callback because
+      // we already scheduled one when we created the queue.
+      syncQueue.push(callback);
+    }
+
+    return fakeCallbackNode;
+  }
+  function cancelCallback(callbackNode) {
+    if (callbackNode !== fakeCallbackNode) {
+      Scheduler_cancelCallback(callbackNode);
+    }
+  }
+  function flushSyncCallbackQueue() {
+    if (immediateQueueCallbackNode !== null) {
+      var node = immediateQueueCallbackNode;
+      immediateQueueCallbackNode = null;
+      Scheduler_cancelCallback(node);
+    }
+
+    flushSyncCallbackQueueImpl();
+  }
+
+  function flushSyncCallbackQueueImpl() {
+    if (!isFlushingSyncQueue && syncQueue !== null) {
+      // Prevent re-entrancy.
+      isFlushingSyncQueue = true;
+      var i = 0;
+
+      try {
+        var _isSync = true;
+        var queue = syncQueue;
+        runWithPriority$1(ImmediatePriority, function () {
+          for (; i < queue.length; i++) {
+            var callback = queue[i];
+
+            do {
+              callback = callback(_isSync);
+            } while (callback !== null);
+          }
+        });
+        syncQueue = null;
+      } catch (error) {
+        // If something throws, leave the remaining callbacks on the queue.
+        if (syncQueue !== null) {
+          syncQueue = syncQueue.slice(i + 1);
+        } // Resume flushing in the next tick
+
+
+        Scheduler_scheduleCallback(Scheduler_ImmediatePriority, flushSyncCallbackQueue);
+        throw error;
+      } finally {
+        isFlushingSyncQueue = false;
+      }
+    }
+  }
+
+  var NoMode = 0;
+  var StrictMode = 1; // TODO: Remove BlockingMode and ConcurrentMode by reading from the root
+  // tag instead
+
+  var BlockingMode = 2;
+  var ConcurrentMode = 4;
+  var ProfileMode = 8;
+
+  // Max 31 bit integer. The max integer size in V8 for 32-bit systems.
+  // Math.pow(2, 30) - 1
+  // 0b111111111111111111111111111111
+  var MAX_SIGNED_31_BIT_INT = 1073741823;
+
+  var NoWork = 0; // TODO: Think of a better name for Never. The key difference with Idle is that
+  // Never work can be committed in an inconsistent state without tearing the UI.
+  // The main example is offscreen content, like a hidden subtree. So one possible
+  // name is Offscreen. However, it also includes dehydrated Suspense boundaries,
+  // which are inconsistent in the sense that they haven't finished yet, but
+  // aren't visibly inconsistent because the server rendered HTML matches what the
+  // hydrated tree would look like.
+
+  var Never = 1; // Idle is slightly higher priority than Never. It must completely finish in
+  // order to be consistent.
+
+  var Idle = 2; // Continuous Hydration is slightly higher than Idle and is used to increase
+  // priority of hover targets.
+
+  var ContinuousHydration = 3;
+  var Sync = MAX_SIGNED_31_BIT_INT;
+  var Batched = Sync - 1;
+  var UNIT_SIZE = 10;
+  var MAGIC_NUMBER_OFFSET = Batched - 1; // 1 unit of expiration time represents 10ms.
+
+  function msToExpirationTime(ms) {
+    // Always subtract from the offset so that we don't clash with the magic number for NoWork.
+    return MAGIC_NUMBER_OFFSET - (ms / UNIT_SIZE | 0);
+  }
+  function expirationTimeToMs(expirationTime) {
+    return (MAGIC_NUMBER_OFFSET - expirationTime) * UNIT_SIZE;
+  }
+
+  function ceiling(num, precision) {
+    return ((num / precision | 0) + 1) * precision;
+  }
+
+  function computeExpirationBucket(currentTime, expirationInMs, bucketSizeMs) {
+    return MAGIC_NUMBER_OFFSET - ceiling(MAGIC_NUMBER_OFFSET - currentTime + expirationInMs / UNIT_SIZE, bucketSizeMs / UNIT_SIZE);
+  } // TODO: This corresponds to Scheduler's NormalPriority, not LowPriority. Update
+  // the names to reflect.
+
+
+  var LOW_PRIORITY_EXPIRATION = 5000;
+  var LOW_PRIORITY_BATCH_SIZE = 250;
+  function computeAsyncExpiration(currentTime) {
+    return computeExpirationBucket(currentTime, LOW_PRIORITY_EXPIRATION, LOW_PRIORITY_BATCH_SIZE);
+  }
+  function computeSuspenseExpiration(currentTime, timeoutMs) {
+    // TODO: Should we warn if timeoutMs is lower than the normal pri expiration time?
+    return computeExpirationBucket(currentTime, timeoutMs, LOW_PRIORITY_BATCH_SIZE);
+  } // We intentionally set a higher expiration time for interactive updates in
+  // dev than in production.
+  //
+  // If the main thread is being blocked so long that you hit the expiration,
+  // it's a problem that could be solved with better scheduling.
+  //
+  // People will be more likely to notice this and fix it with the long
+  // expiration time in development.
+  //
+  // In production we opt for better UX at the risk of masking scheduling
+  // problems, by expiring fast.
+
+  var HIGH_PRIORITY_EXPIRATION =  500 ;
+  var HIGH_PRIORITY_BATCH_SIZE = 100;
+  function computeInteractiveExpiration(currentTime) {
+    return computeExpirationBucket(currentTime, HIGH_PRIORITY_EXPIRATION, HIGH_PRIORITY_BATCH_SIZE);
+  }
+  function inferPriorityFromExpirationTime(currentTime, expirationTime) {
+    if (expirationTime === Sync) {
+      return ImmediatePriority;
+    }
+
+    if (expirationTime === Never || expirationTime === Idle) {
+      return IdlePriority;
+    }
+
+    var msUntil = expirationTimeToMs(expirationTime) - expirationTimeToMs(currentTime);
+
+    if (msUntil <= 0) {
+      return ImmediatePriority;
+    }
+
+    if (msUntil <= HIGH_PRIORITY_EXPIRATION + HIGH_PRIORITY_BATCH_SIZE) {
+      return UserBlockingPriority$1;
+    }
+
+    if (msUntil <= LOW_PRIORITY_EXPIRATION + LOW_PRIORITY_BATCH_SIZE) {
+      return NormalPriority;
+    } // TODO: Handle LowPriority
+    // Assume anything lower has idle priority
+
+
+    return IdlePriority;
+  }
+
+  var ReactStrictModeWarnings = {
+    recordUnsafeLifecycleWarnings: function (fiber, instance) {},
+    flushPendingUnsafeLifecycleWarnings: function () {},
+    recordLegacyContextWarning: function (fiber, instance) {},
+    flushLegacyContextWarning: function () {},
+    discardPendingWarnings: function () {}
+  };
+
+  {
+    var findStrictRoot = function (fiber) {
+      var maybeStrictRoot = null;
+      var node = fiber;
+
+      while (node !== null) {
+        if (node.mode & StrictMode) {
+          maybeStrictRoot = node;
+        }
+
+        node = node.return;
+      }
+
+      return maybeStrictRoot;
+    };
+
+    var setToSortedString = function (set) {
+      var array = [];
+      set.forEach(function (value) {
+        array.push(value);
+      });
+      return array.sort().join(', ');
+    };
+
+    var pendingComponentWillMountWarnings = [];
+    var pendingUNSAFE_ComponentWillMountWarnings = [];
+    var pendingComponentWillReceivePropsWarnings = [];
+    var pendingUNSAFE_ComponentWillReceivePropsWarnings = [];
+    var pendingComponentWillUpdateWarnings = [];
+    var pendingUNSAFE_ComponentWillUpdateWarnings = []; // Tracks components we have already warned about.
+
+    var didWarnAboutUnsafeLifecycles = new Set();
+
+    ReactStrictModeWarnings.recordUnsafeLifecycleWarnings = function (fiber, instance) {
+      // Dedup strategy: Warn once per component.
+      if (didWarnAboutUnsafeLifecycles.has(fiber.type)) {
+        return;
+      }
+
+      if (typeof instance.componentWillMount === 'function' && // Don't warn about react-lifecycles-compat polyfilled components.
+      instance.componentWillMount.__suppressDeprecationWarning !== true) {
+        pendingComponentWillMountWarnings.push(fiber);
+      }
+
+      if (fiber.mode & StrictMode && typeof instance.UNSAFE_componentWillMount === 'function') {
+        pendingUNSAFE_ComponentWillMountWarnings.push(fiber);
+      }
+
+      if (typeof instance.componentWillReceiveProps === 'function' && instance.componentWillReceiveProps.__suppressDeprecationWarning !== true) {
+        pendingComponentWillReceivePropsWarnings.push(fiber);
+      }
+
+      if (fiber.mode & StrictMode && typeof instance.UNSAFE_componentWillReceiveProps === 'function') {
+        pendingUNSAFE_ComponentWillReceivePropsWarnings.push(fiber);
+      }
+
+      if (typeof instance.componentWillUpdate === 'function' && instance.componentWillUpdate.__suppressDeprecationWarning !== true) {
+        pendingComponentWillUpdateWarnings.push(fiber);
+      }
+
+      if (fiber.mode & StrictMode && typeof instance.UNSAFE_componentWillUpdate === 'function') {
+        pendingUNSAFE_ComponentWillUpdateWarnings.push(fiber);
+      }
+    };
+
+    ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings = function () {
+      // We do an initial pass to gather component names
+      var componentWillMountUniqueNames = new Set();
+
+      if (pendingComponentWillMountWarnings.length > 0) {
+        pendingComponentWillMountWarnings.forEach(function (fiber) {
+          componentWillMountUniqueNames.add(getComponentName(fiber.type) || 'Component');
+          didWarnAboutUnsafeLifecycles.add(fiber.type);
+        });
+        pendingComponentWillMountWarnings = [];
+      }
+
+      var UNSAFE_componentWillMountUniqueNames = new Set();
+
+      if (pendingUNSAFE_ComponentWillMountWarnings.length > 0) {
+        pendingUNSAFE_ComponentWillMountWarnings.forEach(function (fiber) {
+          UNSAFE_componentWillMountUniqueNames.add(getComponentName(fiber.type) || 'Component');
+          didWarnAboutUnsafeLifecycles.add(fiber.type);
+        });
+        pendingUNSAFE_ComponentWillMountWarnings = [];
+      }
+
+      var componentWillReceivePropsUniqueNames = new Set();
+
+      if (pendingComponentWillReceivePropsWarnings.length > 0) {
+        pendingComponentWillReceivePropsWarnings.forEach(function (fiber) {
+          componentWillReceivePropsUniqueNames.add(getComponentName(fiber.type) || 'Component');
+          didWarnAboutUnsafeLifecycles.add(fiber.type);
+        });
+        pendingComponentWillReceivePropsWarnings = [];
+      }
+
+      var UNSAFE_componentWillReceivePropsUniqueNames = new Set();
+
+      if (pendingUNSAFE_ComponentWillReceivePropsWarnings.length > 0) {
+        pendingUNSAFE_ComponentWillReceivePropsWarnings.forEach(function (fiber) {
+          UNSAFE_componentWillReceivePropsUniqueNames.add(getComponentName(fiber.type) || 'Component');
+          didWarnAboutUnsafeLifecycles.add(fiber.type);
+        });
+        pendingUNSAFE_ComponentWillReceivePropsWarnings = [];
+      }
+
+      var componentWillUpdateUniqueNames = new Set();
+
+      if (pendingComponentWillUpdateWarnings.length > 0) {
+        pendingComponentWillUpdateWarnings.forEach(function (fiber) {
+          componentWillUpdateUniqueNames.add(getComponentName(fiber.type) || 'Component');
+          didWarnAboutUnsafeLifecycles.add(fiber.type);
+        });
+        pendingComponentWillUpdateWarnings = [];
+      }
+
+      var UNSAFE_componentWillUpdateUniqueNames = new Set();
+
+      if (pendingUNSAFE_ComponentWillUpdateWarnings.length > 0) {
+        pendingUNSAFE_ComponentWillUpdateWarnings.forEach(function (fiber) {
+          UNSAFE_componentWillUpdateUniqueNames.add(getComponentName(fiber.type) || 'Component');
+          didWarnAboutUnsafeLifecycles.add(fiber.type);
+        });
+        pendingUNSAFE_ComponentWillUpdateWarnings = [];
+      } // Finally, we flush all the warnings
+      // UNSAFE_ ones before the deprecated ones, since they'll be 'louder'
+
+
+      if (UNSAFE_componentWillMountUniqueNames.size > 0) {
+        var sortedNames = setToSortedString(UNSAFE_componentWillMountUniqueNames);
+
+        error('Using UNSAFE_componentWillMount in strict mode is not recommended and may indicate bugs in your code. ' + 'See https://fb.me/react-unsafe-component-lifecycles for details.\n\n' + '* Move code with side effects to componentDidMount, and set initial state in the constructor.\n' + '\nPlease update the following components: %s', sortedNames);
+      }
+
+      if (UNSAFE_componentWillReceivePropsUniqueNames.size > 0) {
+        var _sortedNames = setToSortedString(UNSAFE_componentWillReceivePropsUniqueNames);
+
+        error('Using UNSAFE_componentWillReceiveProps in strict mode is not recommended ' + 'and may indicate bugs in your code. ' + 'See https://fb.me/react-unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + "* If you're updating state whenever props change, " + 'refactor your code to use memoization techniques or move it to ' + 'static getDerivedStateFromProps. Learn more at: https://fb.me/react-derived-state\n' + '\nPlease update the following components: %s', _sortedNames);
+      }
+
+      if (UNSAFE_componentWillUpdateUniqueNames.size > 0) {
+        var _sortedNames2 = setToSortedString(UNSAFE_componentWillUpdateUniqueNames);
+
+        error('Using UNSAFE_componentWillUpdate in strict mode is not recommended ' + 'and may indicate bugs in your code. ' + 'See https://fb.me/react-unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + '\nPlease update the following components: %s', _sortedNames2);
+      }
+
+      if (componentWillMountUniqueNames.size > 0) {
+        var _sortedNames3 = setToSortedString(componentWillMountUniqueNames);
+
+        warn('componentWillMount has been renamed, and is not recommended for use. ' + 'See https://fb.me/react-unsafe-component-lifecycles for details.\n\n' + '* Move code with side effects to componentDidMount, and set initial state in the constructor.\n' + '* Rename componentWillMount to UNSAFE_componentWillMount to suppress ' + 'this warning in non-strict mode. In React 17.x, only the UNSAFE_ name will work. ' + 'To rename all deprecated lifecycles to their new names, you can run ' + '`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n' + '\nPlease update the following components: %s', _sortedNames3);
+      }
+
+      if (componentWillReceivePropsUniqueNames.size > 0) {
+        var _sortedNames4 = setToSortedString(componentWillReceivePropsUniqueNames);
+
+        warn('componentWillReceiveProps has been renamed, and is not recommended for use. ' + 'See https://fb.me/react-unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + "* If you're updating state whenever props change, refactor your " + 'code to use memoization techniques or move it to ' + 'static getDerivedStateFromProps. Learn more at: https://fb.me/react-derived-state\n' + '* Rename componentWillReceiveProps to UNSAFE_componentWillReceiveProps to suppress ' + 'this warning in non-strict mode. In React 17.x, only the UNSAFE_ name will work. ' + 'To rename all deprecated lifecycles to their new names, you can run ' + '`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n' + '\nPlease update the following components: %s', _sortedNames4);
+      }
+
+      if (componentWillUpdateUniqueNames.size > 0) {
+        var _sortedNames5 = setToSortedString(componentWillUpdateUniqueNames);
+
+        warn('componentWillUpdate has been renamed, and is not recommended for use. ' + 'See https://fb.me/react-unsafe-component-lifecycles for details.\n\n' + '* Move data fetching code or side effects to componentDidUpdate.\n' + '* Rename componentWillUpdate to UNSAFE_componentWillUpdate to suppress ' + 'this warning in non-strict mode. In React 17.x, only the UNSAFE_ name will work. ' + 'To rename all deprecated lifecycles to their new names, you can run ' + '`npx react-codemod rename-unsafe-lifecycles` in your project source folder.\n' + '\nPlease update the following components: %s', _sortedNames5);
+      }
+    };
+
+    var pendingLegacyContextWarning = new Map(); // Tracks components we have already warned about.
+
+    var didWarnAboutLegacyContext = new Set();
+
+    ReactStrictModeWarnings.recordLegacyContextWarning = function (fiber, instance) {
+      var strictRoot = findStrictRoot(fiber);
+
+      if (strictRoot === null) {
+        error('Expected to find a StrictMode component in a strict mode tree. ' + 'This error is likely caused by a bug in React. Please file an issue.');
+
+        return;
+      } // Dedup strategy: Warn once per component.
+
+
+      if (didWarnAboutLegacyContext.has(fiber.type)) {
+        return;
+      }
+
+      var warningsForRoot = pendingLegacyContextWarning.get(strictRoot);
+
+      if (fiber.type.contextTypes != null || fiber.type.childContextTypes != null || instance !== null && typeof instance.getChildContext === 'function') {
+        if (warningsForRoot === undefined) {
+          warningsForRoot = [];
+          pendingLegacyContextWarning.set(strictRoot, warningsForRoot);
+        }
+
+        warningsForRoot.push(fiber);
+      }
+    };
+
+    ReactStrictModeWarnings.flushLegacyContextWarning = function () {
+      pendingLegacyContextWarning.forEach(function (fiberArray, strictRoot) {
+        if (fiberArray.length === 0) {
+          return;
+        }
+
+        var firstFiber = fiberArray[0];
+        var uniqueNames = new Set();
+        fiberArray.forEach(function (fiber) {
+          uniqueNames.add(getComponentName(fiber.type) || 'Component');
+          didWarnAboutLegacyContext.add(fiber.type);
+        });
+        var sortedNames = setToSortedString(uniqueNames);
+        var firstComponentStack = getStackByFiberInDevAndProd(firstFiber);
+
+        error('Legacy context API has been detected within a strict-mode tree.' + '\n\nThe old API will be supported in all 16.x releases, but applications ' + 'using it should migrate to the new version.' + '\n\nPlease update the following components: %s' + '\n\nLearn more about this warning here: https://fb.me/react-legacy-context' + '%s', sortedNames, firstComponentStack);
+      });
+    };
+
+    ReactStrictModeWarnings.discardPendingWarnings = function () {
+      pendingComponentWillMountWarnings = [];
+      pendingUNSAFE_ComponentWillMountWarnings = [];
+      pendingComponentWillReceivePropsWarnings = [];
+      pendingUNSAFE_ComponentWillReceivePropsWarnings = [];
+      pendingComponentWillUpdateWarnings = [];
+      pendingUNSAFE_ComponentWillUpdateWarnings = [];
+      pendingLegacyContextWarning = new Map();
+    };
+  }
+
+  var resolveFamily = null; // $FlowFixMe Flow gets confused by a WeakSet feature check below.
+
+  var failedBoundaries = null;
+  var setRefreshHandler = function (handler) {
+    {
+      resolveFamily = handler;
+    }
+  };
+  function resolveFunctionForHotReloading(type) {
+    {
+      if (resolveFamily === null) {
+        // Hot reloading is disabled.
+        return type;
+      }
+
+      var family = resolveFamily(type);
+
+      if (family === undefined) {
+        return type;
+      } // Use the latest known implementation.
+
+
+      return family.current;
+    }
+  }
+  function resolveClassForHotReloading(type) {
+    // No implementation differences.
+    return resolveFunctionForHotReloading(type);
+  }
+  function resolveForwardRefForHotReloading(type) {
+    {
+      if (resolveFamily === null) {
+        // Hot reloading is disabled.
+        return type;
+      }
+
+      var family = resolveFamily(type);
+
+      if (family === undefined) {
+        // Check if we're dealing with a real forwardRef. Don't want to crash early.
+        if (type !== null && type !== undefined && typeof type.render === 'function') {
+          // ForwardRef is special because its resolved .type is an object,
+          // but it's possible that we only have its inner render function in the map.
+          // If that inner render function is different, we'll build a new forwardRef type.
+          var currentRender = resolveFunctionForHotReloading(type.render);
+
+          if (type.render !== currentRender) {
+            var syntheticType = {
+              $$typeof: REACT_FORWARD_REF_TYPE,
+              render: currentRender
+            };
+
+            if (type.displayName !== undefined) {
+              syntheticType.displayName = type.displayName;
+            }
+
+            return syntheticType;
+          }
+        }
+
+        return type;
+      } // Use the latest known implementation.
+
+
+      return family.current;
+    }
+  }
+  function isCompatibleFamilyForHotReloading(fiber, element) {
+    {
+      if (resolveFamily === null) {
+        // Hot reloading is disabled.
+        return false;
+      }
+
+      var prevType = fiber.elementType;
+      var nextType = element.type; // If we got here, we know types aren't === equal.
+
+      var needsCompareFamilies = false;
+      var $$typeofNextType = typeof nextType === 'object' && nextType !== null ? nextType.$$typeof : null;
+
+      switch (fiber.tag) {
+        case ClassComponent:
+          {
+            if (typeof nextType === 'function') {
+              needsCompareFamilies = true;
+            }
+
+            break;
+          }
+
+        case FunctionComponent:
+          {
+            if (typeof nextType === 'function') {
+              needsCompareFamilies = true;
+            } else if ($$typeofNextType === REACT_LAZY_TYPE) {
+              // We don't know the inner type yet.
+              // We're going to assume that the lazy inner type is stable,
+              // and so it is sufficient to avoid reconciling it away.
+              // We're not going to unwrap or actually use the new lazy type.
+              needsCompareFamilies = true;
+            }
+
+            break;
+          }
+
+        case ForwardRef:
+          {
+            if ($$typeofNextType === REACT_FORWARD_REF_TYPE) {
+              needsCompareFamilies = true;
+            } else if ($$typeofNextType === REACT_LAZY_TYPE) {
+              needsCompareFamilies = true;
+            }
+
+            break;
+          }
+
+        case MemoComponent:
+        case SimpleMemoComponent:
+          {
+            if ($$typeofNextType === REACT_MEMO_TYPE) {
+              // TODO: if it was but can no longer be simple,
+              // we shouldn't set this.
+              needsCompareFamilies = true;
+            } else if ($$typeofNextType === REACT_LAZY_TYPE) {
+              needsCompareFamilies = true;
+            }
+
+            break;
+          }
+
+        default:
+          return false;
+      } // Check if both types have a family and it's the same one.
+
+
+      if (needsCompareFamilies) {
+        // Note: memo() and forwardRef() we'll compare outer rather than inner type.
+        // This means both of them need to be registered to preserve state.
+        // If we unwrapped and compared the inner types for wrappers instead,
+        // then we would risk falsely saying two separate memo(Foo)
+        // calls are equivalent because they wrap the same Foo function.
+        var prevFamily = resolveFamily(prevType);
+
+        if (prevFamily !== undefined && prevFamily === resolveFamily(nextType)) {
+          return true;
+        }
+      }
+
+      return false;
+    }
+  }
+  function markFailedErrorBoundaryForHotReloading(fiber) {
+    {
+      if (resolveFamily === null) {
+        // Hot reloading is disabled.
+        return;
+      }
+
+      if (typeof WeakSet !== 'function') {
+        return;
+      }
+
+      if (failedBoundaries === null) {
+        failedBoundaries = new WeakSet();
+      }
+
+      failedBoundaries.add(fiber);
+    }
+  }
+  var scheduleRefresh = function (root, update) {
+    {
+      if (resolveFamily === null) {
+        // Hot reloading is disabled.
+        return;
+      }
+
+      var staleFamilies = update.staleFamilies,
+          updatedFamilies = update.updatedFamilies;
+      flushPassiveEffects();
+      flushSync(function () {
+        scheduleFibersWithFamiliesRecursively(root.current, updatedFamilies, staleFamilies);
+      });
+    }
+  };
+  var scheduleRoot = function (root, element) {
+    {
+      if (root.context !== emptyContextObject) {
+        // Super edge case: root has a legacy _renderSubtree context
+        // but we don't know the parentComponent so we can't pass it.
+        // Just ignore. We'll delete this with _renderSubtree code path later.
+        return;
+      }
+
+      flushPassiveEffects();
+      syncUpdates(function () {
+        updateContainer(element, root, null, null);
+      });
+    }
+  };
+
+  function scheduleFibersWithFamiliesRecursively(fiber, updatedFamilies, staleFamilies) {
+    {
+      var alternate = fiber.alternate,
+          child = fiber.child,
+          sibling = fiber.sibling,
+          tag = fiber.tag,
+          type = fiber.type;
+      var candidateType = null;
+
+      switch (tag) {
+        case FunctionComponent:
+        case SimpleMemoComponent:
+        case ClassComponent:
+          candidateType = type;
+          break;
+
+        case ForwardRef:
+          candidateType = type.render;
+          break;
+      }
+
+      if (resolveFamily === null) {
+        throw new Error('Expected resolveFamily to be set during hot reload.');
+      }
+
+      var needsRender = false;
+      var needsRemount = false;
+
+      if (candidateType !== null) {
+        var family = resolveFamily(candidateType);
+
+        if (family !== undefined) {
+          if (staleFamilies.has(family)) {
+            needsRemount = true;
+          } else if (updatedFamilies.has(family)) {
+            if (tag === ClassComponent) {
+              needsRemount = true;
+            } else {
+              needsRender = true;
+            }
+          }
+        }
+      }
+
+      if (failedBoundaries !== null) {
+        if (failedBoundaries.has(fiber) || alternate !== null && failedBoundaries.has(alternate)) {
+          needsRemount = true;
+        }
+      }
+
+      if (needsRemount) {
+        fiber._debugNeedsRemount = true;
+      }
+
+      if (needsRemount || needsRender) {
+        scheduleWork(fiber, Sync);
+      }
+
+      if (child !== null && !needsRemount) {
+        scheduleFibersWithFamiliesRecursively(child, updatedFamilies, staleFamilies);
+      }
+
+      if (sibling !== null) {
+        scheduleFibersWithFamiliesRecursively(sibling, updatedFamilies, staleFamilies);
+      }
+    }
+  }
+
+  var findHostInstancesForRefresh = function (root, families) {
+    {
+      var hostInstances = new Set();
+      var types = new Set(families.map(function (family) {
+        return family.current;
+      }));
+      findHostInstancesForMatchingFibersRecursively(root.current, types, hostInstances);
+      return hostInstances;
+    }
+  };
+
+  function findHostInstancesForMatchingFibersRecursively(fiber, types, hostInstances) {
+    {
+      var child = fiber.child,
+          sibling = fiber.sibling,
+          tag = fiber.tag,
+          type = fiber.type;
+      var candidateType = null;
+
+      switch (tag) {
+        case FunctionComponent:
+        case SimpleMemoComponent:
+        case ClassComponent:
+          candidateType = type;
+          break;
+
+        case ForwardRef:
+          candidateType = type.render;
+          break;
+      }
+
+      var didMatch = false;
+
+      if (candidateType !== null) {
+        if (types.has(candidateType)) {
+          didMatch = true;
+        }
+      }
+
+      if (didMatch) {
+        // We have a match. This only drills down to the closest host components.
+        // There's no need to search deeper because for the purpose of giving
+        // visual feedback, "flashing" outermost parent rectangles is sufficient.
+        findHostInstancesForFiberShallowly(fiber, hostInstances);
+      } else {
+        // If there's no match, maybe there will be one further down in the child tree.
+        if (child !== null) {
+          findHostInstancesForMatchingFibersRecursively(child, types, hostInstances);
+        }
+      }
+
+      if (sibling !== null) {
+        findHostInstancesForMatchingFibersRecursively(sibling, types, hostInstances);
+      }
+    }
+  }
+
+  function findHostInstancesForFiberShallowly(fiber, hostInstances) {
+    {
+      var foundHostInstances = findChildHostInstancesForFiberShallowly(fiber, hostInstances);
+
+      if (foundHostInstances) {
+        return;
+      } // If we didn't find any host children, fallback to closest host parent.
+
+
+      var node = fiber;
+
+      while (true) {
+        switch (node.tag) {
+          case HostComponent:
+            hostInstances.add(node.stateNode);
+            return;
+
+          case HostPortal:
+            hostInstances.add(node.stateNode.containerInfo);
+            return;
+
+          case HostRoot:
+            hostInstances.add(node.stateNode.containerInfo);
+            return;
+        }
+
+        if (node.return === null) {
+          throw new Error('Expected to reach root first.');
+        }
+
+        node = node.return;
+      }
+    }
+  }
+
+  function findChildHostInstancesForFiberShallowly(fiber, hostInstances) {
+    {
+      var node = fiber;
+      var foundHostInstances = false;
+
+      while (true) {
+        if (node.tag === HostComponent) {
+          // We got a match.
+          foundHostInstances = true;
+          hostInstances.add(node.stateNode); // There may still be more, so keep searching.
+        } else if (node.child !== null) {
+          node.child.return = node;
+          node = node.child;
+          continue;
+        }
+
+        if (node === fiber) {
+          return foundHostInstances;
+        }
+
+        while (node.sibling === null) {
+          if (node.return === null || node.return === fiber) {
+            return foundHostInstances;
+          }
+
+          node = node.return;
+        }
+
+        node.sibling.return = node.return;
+        node = node.sibling;
+      }
+    }
+
+    return false;
+  }
+
+  function resolveDefaultProps(Component, baseProps) {
+    if (Component && Component.defaultProps) {
+      // Resolve default props. Taken from ReactElement
+      var props = _assign({}, baseProps);
+
+      var defaultProps = Component.defaultProps;
+
+      for (var propName in defaultProps) {
+        if (props[propName] === undefined) {
+          props[propName] = defaultProps[propName];
+        }
+      }
+
+      return props;
+    }
+
+    return baseProps;
+  }
+  function readLazyComponentType(lazyComponent) {
+    initializeLazyComponentType(lazyComponent);
+
+    if (lazyComponent._status !== Resolved) {
+      throw lazyComponent._result;
+    }
+
+    return lazyComponent._result;
+  }
+
+  var valueCursor = createCursor(null);
+  var rendererSigil;
+
+  {
+    // Use this to detect multiple renderers using the same context
+    rendererSigil = {};
+  }
+
+  var currentlyRenderingFiber = null;
+  var lastContextDependency = null;
+  var lastContextWithAllBitsObserved = null;
+  var isDisallowedContextReadInDEV = false;
+  function resetContextDependencies() {
+    // This is called right before React yields execution, to ensure `readContext`
+    // cannot be called outside the render phase.
+    currentlyRenderingFiber = null;
+    lastContextDependency = null;
+    lastContextWithAllBitsObserved = null;
+
+    {
+      isDisallowedContextReadInDEV = false;
+    }
+  }
+  function enterDisallowedContextReadInDEV() {
+    {
+      isDisallowedContextReadInDEV = true;
+    }
+  }
+  function exitDisallowedContextReadInDEV() {
+    {
+      isDisallowedContextReadInDEV = false;
+    }
+  }
+  function pushProvider(providerFiber, nextValue) {
+    var context = providerFiber.type._context;
+
+    {
+      push(valueCursor, context._currentValue, providerFiber);
+      context._currentValue = nextValue;
+
+      {
+        if (context._currentRenderer !== undefined && context._currentRenderer !== null && context._currentRenderer !== rendererSigil) {
+          error('Detected multiple renderers concurrently rendering the ' + 'same context provider. This is currently unsupported.');
+        }
+
+        context._currentRenderer = rendererSigil;
+      }
+    }
+  }
+  function popProvider(providerFiber) {
+    var currentValue = valueCursor.current;
+    pop(valueCursor, providerFiber);
+    var context = providerFiber.type._context;
+
+    {
+      context._currentValue = currentValue;
+    }
+  }
+  function calculateChangedBits(context, newValue, oldValue) {
+    if (objectIs(oldValue, newValue)) {
+      // No change
+      return 0;
+    } else {
+      var changedBits = typeof context._calculateChangedBits === 'function' ? context._calculateChangedBits(oldValue, newValue) : MAX_SIGNED_31_BIT_INT;
+
+      {
+        if ((changedBits & MAX_SIGNED_31_BIT_INT) !== changedBits) {
+          error('calculateChangedBits: Expected the return value to be a ' + '31-bit integer. Instead received: %s', changedBits);
+        }
+      }
+
+      return changedBits | 0;
+    }
+  }
+  function scheduleWorkOnParentPath(parent, renderExpirationTime) {
+    // Update the child expiration time of all the ancestors, including
+    // the alternates.
+    var node = parent;
+
+    while (node !== null) {
+      var alternate = node.alternate;
+
+      if (node.childExpirationTime < renderExpirationTime) {
+        node.childExpirationTime = renderExpirationTime;
+
+        if (alternate !== null && alternate.childExpirationTime < renderExpirationTime) {
+          alternate.childExpirationTime = renderExpirationTime;
+        }
+      } else if (alternate !== null && alternate.childExpirationTime < renderExpirationTime) {
+        alternate.childExpirationTime = renderExpirationTime;
+      } else {
+        // Neither alternate was updated, which means the rest of the
+        // ancestor path already has sufficient priority.
+        break;
+      }
+
+      node = node.return;
+    }
+  }
+  function propagateContextChange(workInProgress, context, changedBits, renderExpirationTime) {
+    var fiber = workInProgress.child;
+
+    if (fiber !== null) {
+      // Set the return pointer of the child to the work-in-progress fiber.
+      fiber.return = workInProgress;
+    }
+
+    while (fiber !== null) {
+      var nextFiber = void 0; // Visit this fiber.
+
+      var list = fiber.dependencies;
+
+      if (list !== null) {
+        nextFiber = fiber.child;
+        var dependency = list.firstContext;
+
+        while (dependency !== null) {
+          // Check if the context matches.
+          if (dependency.context === context && (dependency.observedBits & changedBits) !== 0) {
+            // Match! Schedule an update on this fiber.
+            if (fiber.tag === ClassComponent) {
+              // Schedule a force update on the work-in-progress.
+              var update = createUpdate(renderExpirationTime, null);
+              update.tag = ForceUpdate; // TODO: Because we don't have a work-in-progress, this will add the
+              // update to the current fiber, too, which means it will persist even if
+              // this render is thrown away. Since it's a race condition, not sure it's
+              // worth fixing.
+
+              enqueueUpdate(fiber, update);
+            }
+
+            if (fiber.expirationTime < renderExpirationTime) {
+              fiber.expirationTime = renderExpirationTime;
+            }
+
+            var alternate = fiber.alternate;
+
+            if (alternate !== null && alternate.expirationTime < renderExpirationTime) {
+              alternate.expirationTime = renderExpirationTime;
+            }
+
+            scheduleWorkOnParentPath(fiber.return, renderExpirationTime); // Mark the expiration time on the list, too.
+
+            if (list.expirationTime < renderExpirationTime) {
+              list.expirationTime = renderExpirationTime;
+            } // Since we already found a match, we can stop traversing the
+            // dependency list.
+
+
+            break;
+          }
+
+          dependency = dependency.next;
+        }
+      } else if (fiber.tag === ContextProvider) {
+        // Don't scan deeper if this is a matching provider
+        nextFiber = fiber.type === workInProgress.type ? null : fiber.child;
+      } else {
+        // Traverse down.
+        nextFiber = fiber.child;
+      }
+
+      if (nextFiber !== null) {
+        // Set the return pointer of the child to the work-in-progress fiber.
+        nextFiber.return = fiber;
+      } else {
+        // No child. Traverse to next sibling.
+        nextFiber = fiber;
+
+        while (nextFiber !== null) {
+          if (nextFiber === workInProgress) {
+            // We're back to the root of this subtree. Exit.
+            nextFiber = null;
+            break;
+          }
+
+          var sibling = nextFiber.sibling;
+
+          if (sibling !== null) {
+            // Set the return pointer of the sibling to the work-in-progress fiber.
+            sibling.return = nextFiber.return;
+            nextFiber = sibling;
+            break;
+          } // No more siblings. Traverse up.
+
+
+          nextFiber = nextFiber.return;
+        }
+      }
+
+      fiber = nextFiber;
+    }
+  }
+  function prepareToReadContext(workInProgress, renderExpirationTime) {
+    currentlyRenderingFiber = workInProgress;
+    lastContextDependency = null;
+    lastContextWithAllBitsObserved = null;
+    var dependencies = workInProgress.dependencies;
+
+    if (dependencies !== null) {
+      var firstContext = dependencies.firstContext;
+
+      if (firstContext !== null) {
+        if (dependencies.expirationTime >= renderExpirationTime) {
+          // Context list has a pending update. Mark that this fiber performed work.
+          markWorkInProgressReceivedUpdate();
+        } // Reset the work-in-progress list
+
+
+        dependencies.firstContext = null;
+      }
+    }
+  }
+  function readContext(context, observedBits) {
+    {
+      // This warning would fire if you read context inside a Hook like useMemo.
+      // Unlike the class check below, it's not enforced in production for perf.
+      if (isDisallowedContextReadInDEV) {
+        error('Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().');
+      }
+    }
+
+    if (lastContextWithAllBitsObserved === context) ; else if (observedBits === false || observedBits === 0) ; else {
+      var resolvedObservedBits; // Avoid deopting on observable arguments or heterogeneous types.
+
+      if (typeof observedBits !== 'number' || observedBits === MAX_SIGNED_31_BIT_INT) {
+        // Observe all updates.
+        lastContextWithAllBitsObserved = context;
+        resolvedObservedBits = MAX_SIGNED_31_BIT_INT;
+      } else {
+        resolvedObservedBits = observedBits;
+      }
+
+      var contextItem = {
+        context: context,
+        observedBits: resolvedObservedBits,
+        next: null
+      };
+
+      if (lastContextDependency === null) {
+        if (!(currentlyRenderingFiber !== null)) {
+          {
+            throw Error( "Context can only be read while React is rendering. In classes, you can read it in the render method or getDerivedStateFromProps. In function components, you can read it directly in the function body, but not inside Hooks like useReducer() or useMemo()." );
+          }
+        } // This is the first dependency for this component. Create a new list.
+
+
+        lastContextDependency = contextItem;
+        currentlyRenderingFiber.dependencies = {
+          expirationTime: NoWork,
+          firstContext: contextItem,
+          responders: null
+        };
+      } else {
+        // Append a new context item.
+        lastContextDependency = lastContextDependency.next = contextItem;
+      }
+    }
+
+    return  context._currentValue ;
+  }
+
+  var UpdateState = 0;
+  var ReplaceState = 1;
+  var ForceUpdate = 2;
+  var CaptureUpdate = 3; // Global state that is reset at the beginning of calling `processUpdateQueue`.
+  // It should only be read right after calling `processUpdateQueue`, via
+  // `checkHasForceUpdateAfterProcessing`.
+
+  var hasForceUpdate = false;
+  var didWarnUpdateInsideUpdate;
+  var currentlyProcessingQueue;
+
+  {
+    didWarnUpdateInsideUpdate = false;
+    currentlyProcessingQueue = null;
+  }
+
+  function initializeUpdateQueue(fiber) {
+    var queue = {
+      baseState: fiber.memoizedState,
+      baseQueue: null,
+      shared: {
+        pending: null
+      },
+      effects: null
+    };
+    fiber.updateQueue = queue;
+  }
+  function cloneUpdateQueue(current, workInProgress) {
+    // Clone the update queue from current. Unless it's already a clone.
+    var queue = workInProgress.updateQueue;
+    var currentQueue = current.updateQueue;
+
+    if (queue === currentQueue) {
+      var clone = {
+        baseState: currentQueue.baseState,
+        baseQueue: currentQueue.baseQueue,
+        shared: currentQueue.shared,
+        effects: currentQueue.effects
+      };
+      workInProgress.updateQueue = clone;
+    }
+  }
+  function createUpdate(expirationTime, suspenseConfig) {
+    var update = {
+      expirationTime: expirationTime,
+      suspenseConfig: suspenseConfig,
+      tag: UpdateState,
+      payload: null,
+      callback: null,
+      next: null
+    };
+    update.next = update;
+
+    {
+      update.priority = getCurrentPriorityLevel();
+    }
+
+    return update;
+  }
+  function enqueueUpdate(fiber, update) {
+    var updateQueue = fiber.updateQueue;
+
+    if (updateQueue === null) {
+      // Only occurs if the fiber has been unmounted.
+      return;
+    }
+
+    var sharedQueue = updateQueue.shared;
+    var pending = sharedQueue.pending;
+
+    if (pending === null) {
+      // This is the first update. Create a circular list.
+      update.next = update;
+    } else {
+      update.next = pending.next;
+      pending.next = update;
+    }
+
+    sharedQueue.pending = update;
+
+    {
+      if (currentlyProcessingQueue === sharedQueue && !didWarnUpdateInsideUpdate) {
+        error('An update (setState, replaceState, or forceUpdate) was scheduled ' + 'from inside an update function. Update functions should be pure, ' + 'with zero side-effects. Consider using componentDidUpdate or a ' + 'callback.');
+
+        didWarnUpdateInsideUpdate = true;
+      }
+    }
+  }
+  function enqueueCapturedUpdate(workInProgress, update) {
+    var current = workInProgress.alternate;
+
+    if (current !== null) {
+      // Ensure the work-in-progress queue is a clone
+      cloneUpdateQueue(current, workInProgress);
+    } // Captured updates go only on the work-in-progress queue.
+
+
+    var queue = workInProgress.updateQueue; // Append the update to the end of the list.
+
+    var last = queue.baseQueue;
+
+    if (last === null) {
+      queue.baseQueue = update.next = update;
+      update.next = update;
+    } else {
+      update.next = last.next;
+      last.next = update;
+    }
+  }
+
+  function getStateFromUpdate(workInProgress, queue, update, prevState, nextProps, instance) {
+    switch (update.tag) {
+      case ReplaceState:
+        {
+          var payload = update.payload;
+
+          if (typeof payload === 'function') {
+            // Updater function
+            {
+              enterDisallowedContextReadInDEV();
+
+              if ( workInProgress.mode & StrictMode) {
+                payload.call(instance, prevState, nextProps);
+              }
+            }
+
+            var nextState = payload.call(instance, prevState, nextProps);
+
+            {
+              exitDisallowedContextReadInDEV();
+            }
+
+            return nextState;
+          } // State object
+
+
+          return payload;
+        }
+
+      case CaptureUpdate:
+        {
+          workInProgress.effectTag = workInProgress.effectTag & ~ShouldCapture | DidCapture;
+        }
+      // Intentional fallthrough
+
+      case UpdateState:
+        {
+          var _payload = update.payload;
+          var partialState;
+
+          if (typeof _payload === 'function') {
+            // Updater function
+            {
+              enterDisallowedContextReadInDEV();
+
+              if ( workInProgress.mode & StrictMode) {
+                _payload.call(instance, prevState, nextProps);
+              }
+            }
+
+            partialState = _payload.call(instance, prevState, nextProps);
+
+            {
+              exitDisallowedContextReadInDEV();
+            }
+          } else {
+            // Partial state object
+            partialState = _payload;
+          }
+
+          if (partialState === null || partialState === undefined) {
+            // Null and undefined are treated as no-ops.
+            return prevState;
+          } // Merge the partial state and the previous state.
+
+
+          return _assign({}, prevState, partialState);
+        }
+
+      case ForceUpdate:
+        {
+          hasForceUpdate = true;
+          return prevState;
+        }
+    }
+
+    return prevState;
+  }
+
+  function processUpdateQueue(workInProgress, props, instance, renderExpirationTime) {
+    // This is always non-null on a ClassComponent or HostRoot
+    var queue = workInProgress.updateQueue;
+    hasForceUpdate = false;
+
+    {
+      currentlyProcessingQueue = queue.shared;
+    } // The last rebase update that is NOT part of the base state.
+
+
+    var baseQueue = queue.baseQueue; // The last pending update that hasn't been processed yet.
+
+    var pendingQueue = queue.shared.pending;
+
+    if (pendingQueue !== null) {
+      // We have new updates that haven't been processed yet.
+      // We'll add them to the base queue.
+      if (baseQueue !== null) {
+        // Merge the pending queue and the base queue.
+        var baseFirst = baseQueue.next;
+        var pendingFirst = pendingQueue.next;
+        baseQueue.next = pendingFirst;
+        pendingQueue.next = baseFirst;
+      }
+
+      baseQueue = pendingQueue;
+      queue.shared.pending = null; // TODO: Pass `current` as argument
+
+      var current = workInProgress.alternate;
+
+      if (current !== null) {
+        var currentQueue = current.updateQueue;
+
+        if (currentQueue !== null) {
+          currentQueue.baseQueue = pendingQueue;
+        }
+      }
+    } // These values may change as we process the queue.
+
+
+    if (baseQueue !== null) {
+      var first = baseQueue.next; // Iterate through the list of updates to compute the result.
+
+      var newState = queue.baseState;
+      var newExpirationTime = NoWork;
+      var newBaseState = null;
+      var newBaseQueueFirst = null;
+      var newBaseQueueLast = null;
+
+      if (first !== null) {
+        var update = first;
+
+        do {
+          var updateExpirationTime = update.expirationTime;
+
+          if (updateExpirationTime < renderExpirationTime) {
+            // Priority is insufficient. Skip this update. If this is the first
+            // skipped update, the previous update/state is the new base
+            // update/state.
+            var clone = {
+              expirationTime: update.expirationTime,
+              suspenseConfig: update.suspenseConfig,
+              tag: update.tag,
+              payload: update.payload,
+              callback: update.callback,
+              next: null
+            };
+
+            if (newBaseQueueLast === null) {
+              newBaseQueueFirst = newBaseQueueLast = clone;
+              newBaseState = newState;
+            } else {
+              newBaseQueueLast = newBaseQueueLast.next = clone;
+            } // Update the remaining priority in the queue.
+
+
+            if (updateExpirationTime > newExpirationTime) {
+              newExpirationTime = updateExpirationTime;
+            }
+          } else {
+            // This update does have sufficient priority.
+            if (newBaseQueueLast !== null) {
+              var _clone = {
+                expirationTime: Sync,
+                // This update is going to be committed so we never want uncommit it.
+                suspenseConfig: update.suspenseConfig,
+                tag: update.tag,
+                payload: update.payload,
+                callback: update.callback,
+                next: null
+              };
+              newBaseQueueLast = newBaseQueueLast.next = _clone;
+            } // Mark the event time of this update as relevant to this render pass.
+            // TODO: This should ideally use the true event time of this update rather than
+            // its priority which is a derived and not reverseable value.
+            // TODO: We should skip this update if it was already committed but currently
+            // we have no way of detecting the difference between a committed and suspended
+            // update here.
+
+
+            markRenderEventTimeAndConfig(updateExpirationTime, update.suspenseConfig); // Process this update.
+
+            newState = getStateFromUpdate(workInProgress, queue, update, newState, props, instance);
+            var callback = update.callback;
+
+            if (callback !== null) {
+              workInProgress.effectTag |= Callback;
+              var effects = queue.effects;
+
+              if (effects === null) {
+                queue.effects = [update];
+              } else {
+                effects.push(update);
+              }
+            }
+          }
+
+          update = update.next;
+
+          if (update === null || update === first) {
+            pendingQueue = queue.shared.pending;
+
+            if (pendingQueue === null) {
+              break;
+            } else {
+              // An update was scheduled from inside a reducer. Add the new
+              // pending updates to the end of the list and keep processing.
+              update = baseQueue.next = pendingQueue.next;
+              pendingQueue.next = first;
+              queue.baseQueue = baseQueue = pendingQueue;
+              queue.shared.pending = null;
+            }
+          }
+        } while (true);
+      }
+
+      if (newBaseQueueLast === null) {
+        newBaseState = newState;
+      } else {
+        newBaseQueueLast.next = newBaseQueueFirst;
+      }
+
+      queue.baseState = newBaseState;
+      queue.baseQueue = newBaseQueueLast; // Set the remaining expiration time to be whatever is remaining in the queue.
+      // This should be fine because the only two other things that contribute to
+      // expiration time are props and context. We're already in the middle of the
+      // begin phase by the time we start processing the queue, so we've already
+      // dealt with the props. Context in components that specify
+      // shouldComponentUpdate is tricky; but we'll have to account for
+      // that regardless.
+
+      markUnprocessedUpdateTime(newExpirationTime);
+      workInProgress.expirationTime = newExpirationTime;
+      workInProgress.memoizedState = newState;
+    }
+
+    {
+      currentlyProcessingQueue = null;
+    }
+  }
+
+  function callCallback(callback, context) {
+    if (!(typeof callback === 'function')) {
+      {
+        throw Error( "Invalid argument passed as callback. Expected a function. Instead received: " + callback );
+      }
+    }
+
+    callback.call(context);
+  }
+
+  function resetHasForceUpdateBeforeProcessing() {
+    hasForceUpdate = false;
+  }
+  function checkHasForceUpdateAfterProcessing() {
+    return hasForceUpdate;
+  }
+  function commitUpdateQueue(finishedWork, finishedQueue, instance) {
+    // Commit the effects
+    var effects = finishedQueue.effects;
+    finishedQueue.effects = null;
+
+    if (effects !== null) {
+      for (var i = 0; i < effects.length; i++) {
+        var effect = effects[i];
+        var callback = effect.callback;
+
+        if (callback !== null) {
+          effect.callback = null;
+          callCallback(callback, instance);
+        }
+      }
+    }
+  }
+
+  var ReactCurrentBatchConfig = ReactSharedInternals.ReactCurrentBatchConfig;
+  function requestCurrentSuspenseConfig() {
+    return ReactCurrentBatchConfig.suspense;
+  }
+
+  var fakeInternalInstance = {};
+  var isArray = Array.isArray; // React.Component uses a shared frozen object by default.
+  // We'll use it to determine whether we need to initialize legacy refs.
+
+  var emptyRefsObject = new React.Component().refs;
+  var didWarnAboutStateAssignmentForComponent;
+  var didWarnAboutUninitializedState;
+  var didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate;
+  var didWarnAboutLegacyLifecyclesAndDerivedState;
+  var didWarnAboutUndefinedDerivedState;
+  var warnOnUndefinedDerivedState;
+  var warnOnInvalidCallback;
+  var didWarnAboutDirectlyAssigningPropsToState;
+  var didWarnAboutContextTypeAndContextTypes;
+  var didWarnAboutInvalidateContextType;
+
+  {
+    didWarnAboutStateAssignmentForComponent = new Set();
+    didWarnAboutUninitializedState = new Set();
+    didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate = new Set();
+    didWarnAboutLegacyLifecyclesAndDerivedState = new Set();
+    didWarnAboutDirectlyAssigningPropsToState = new Set();
+    didWarnAboutUndefinedDerivedState = new Set();
+    didWarnAboutContextTypeAndContextTypes = new Set();
+    didWarnAboutInvalidateContextType = new Set();
+    var didWarnOnInvalidCallback = new Set();
+
+    warnOnInvalidCallback = function (callback, callerName) {
+      if (callback === null || typeof callback === 'function') {
+        return;
+      }
+
+      var key = callerName + "_" + callback;
+
+      if (!didWarnOnInvalidCallback.has(key)) {
+        didWarnOnInvalidCallback.add(key);
+
+        error('%s(...): Expected the last optional `callback` argument to be a ' + 'function. Instead received: %s.', callerName, callback);
+      }
+    };
+
+    warnOnUndefinedDerivedState = function (type, partialState) {
+      if (partialState === undefined) {
+        var componentName = getComponentName(type) || 'Component';
+
+        if (!didWarnAboutUndefinedDerivedState.has(componentName)) {
+          didWarnAboutUndefinedDerivedState.add(componentName);
+
+          error('%s.getDerivedStateFromProps(): A valid state object (or null) must be returned. ' + 'You have returned undefined.', componentName);
+        }
+      }
+    }; // This is so gross but it's at least non-critical and can be removed if
+    // it causes problems. This is meant to give a nicer error message for
+    // ReactDOM15.unstable_renderSubtreeIntoContainer(reactDOM16Component,
+    // ...)) which otherwise throws a "_processChildContext is not a function"
+    // exception.
+
+
+    Object.defineProperty(fakeInternalInstance, '_processChildContext', {
+      enumerable: false,
+      value: function () {
+        {
+          {
+            throw Error( "_processChildContext is not available in React 16+. This likely means you have multiple copies of React and are attempting to nest a React 15 tree inside a React 16 tree using unstable_renderSubtreeIntoContainer, which isn't supported. Try to make sure you have only one copy of React (and ideally, switch to ReactDOM.createPortal)." );
+          }
+        }
+      }
+    });
+    Object.freeze(fakeInternalInstance);
+  }
+
+  function applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, nextProps) {
+    var prevState = workInProgress.memoizedState;
+
+    {
+      if ( workInProgress.mode & StrictMode) {
+        // Invoke the function an extra time to help detect side-effects.
+        getDerivedStateFromProps(nextProps, prevState);
+      }
+    }
+
+    var partialState = getDerivedStateFromProps(nextProps, prevState);
+
+    {
+      warnOnUndefinedDerivedState(ctor, partialState);
+    } // Merge the partial state and the previous state.
+
+
+    var memoizedState = partialState === null || partialState === undefined ? prevState : _assign({}, prevState, partialState);
+    workInProgress.memoizedState = memoizedState; // Once the update queue is empty, persist the derived state onto the
+    // base state.
+
+    if (workInProgress.expirationTime === NoWork) {
+      // Queue is always non-null for classes
+      var updateQueue = workInProgress.updateQueue;
+      updateQueue.baseState = memoizedState;
+    }
+  }
+  var classComponentUpdater = {
+    isMounted: isMounted,
+    enqueueSetState: function (inst, payload, callback) {
+      var fiber = get(inst);
+      var currentTime = requestCurrentTimeForUpdate();
+      var suspenseConfig = requestCurrentSuspenseConfig();
+      var expirationTime = computeExpirationForFiber(currentTime, fiber, suspenseConfig);
+      var update = createUpdate(expirationTime, suspenseConfig);
+      update.payload = payload;
+
+      if (callback !== undefined && callback !== null) {
+        {
+          warnOnInvalidCallback(callback, 'setState');
+        }
+
+        update.callback = callback;
+      }
+
+      enqueueUpdate(fiber, update);
+      scheduleWork(fiber, expirationTime);
+    },
+    enqueueReplaceState: function (inst, payload, callback) {
+      var fiber = get(inst);
+      var currentTime = requestCurrentTimeForUpdate();
+      var suspenseConfig = requestCurrentSuspenseConfig();
+      var expirationTime = computeExpirationForFiber(currentTime, fiber, suspenseConfig);
+      var update = createUpdate(expirationTime, suspenseConfig);
+      update.tag = ReplaceState;
+      update.payload = payload;
+
+      if (callback !== undefined && callback !== null) {
+        {
+          warnOnInvalidCallback(callback, 'replaceState');
+        }
+
+        update.callback = callback;
+      }
+
+      enqueueUpdate(fiber, update);
+      scheduleWork(fiber, expirationTime);
+    },
+    enqueueForceUpdate: function (inst, callback) {
+      var fiber = get(inst);
+      var currentTime = requestCurrentTimeForUpdate();
+      var suspenseConfig = requestCurrentSuspenseConfig();
+      var expirationTime = computeExpirationForFiber(currentTime, fiber, suspenseConfig);
+      var update = createUpdate(expirationTime, suspenseConfig);
+      update.tag = ForceUpdate;
+
+      if (callback !== undefined && callback !== null) {
+        {
+          warnOnInvalidCallback(callback, 'forceUpdate');
+        }
+
+        update.callback = callback;
+      }
+
+      enqueueUpdate(fiber, update);
+      scheduleWork(fiber, expirationTime);
+    }
+  };
+
+  function checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext) {
+    var instance = workInProgress.stateNode;
+
+    if (typeof instance.shouldComponentUpdate === 'function') {
+      {
+        if ( workInProgress.mode & StrictMode) {
+          // Invoke the function an extra time to help detect side-effects.
+          instance.shouldComponentUpdate(newProps, newState, nextContext);
+        }
+      }
+
+      startPhaseTimer(workInProgress, 'shouldComponentUpdate');
+      var shouldUpdate = instance.shouldComponentUpdate(newProps, newState, nextContext);
+      stopPhaseTimer();
+
+      {
+        if (shouldUpdate === undefined) {
+          error('%s.shouldComponentUpdate(): Returned undefined instead of a ' + 'boolean value. Make sure to return true or false.', getComponentName(ctor) || 'Component');
+        }
+      }
+
+      return shouldUpdate;
+    }
+
+    if (ctor.prototype && ctor.prototype.isPureReactComponent) {
+      return !shallowEqual(oldProps, newProps) || !shallowEqual(oldState, newState);
+    }
+
+    return true;
+  }
+
+  function checkClassInstance(workInProgress, ctor, newProps) {
+    var instance = workInProgress.stateNode;
+
+    {
+      var name = getComponentName(ctor) || 'Component';
+      var renderPresent = instance.render;
+
+      if (!renderPresent) {
+        if (ctor.prototype && typeof ctor.prototype.render === 'function') {
+          error('%s(...): No `render` method found on the returned component ' + 'instance: did you accidentally return an object from the constructor?', name);
+        } else {
+          error('%s(...): No `render` method found on the returned component ' + 'instance: you may have forgotten to define `render`.', name);
+        }
+      }
+
+      if (instance.getInitialState && !instance.getInitialState.isReactClassApproved && !instance.state) {
+        error('getInitialState was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Did you mean to define a state property instead?', name);
+      }
+
+      if (instance.getDefaultProps && !instance.getDefaultProps.isReactClassApproved) {
+        error('getDefaultProps was defined on %s, a plain JavaScript class. ' + 'This is only supported for classes created using React.createClass. ' + 'Use a static property to define defaultProps instead.', name);
+      }
+
+      if (instance.propTypes) {
+        error('propTypes was defined as an instance property on %s. Use a static ' + 'property to define propTypes instead.', name);
+      }
+
+      if (instance.contextType) {
+        error('contextType was defined as an instance property on %s. Use a static ' + 'property to define contextType instead.', name);
+      }
+
+      {
+        if (instance.contextTypes) {
+          error('contextTypes was defined as an instance property on %s. Use a static ' + 'property to define contextTypes instead.', name);
+        }
+
+        if (ctor.contextType && ctor.contextTypes && !didWarnAboutContextTypeAndContextTypes.has(ctor)) {
+          didWarnAboutContextTypeAndContextTypes.add(ctor);
+
+          error('%s declares both contextTypes and contextType static properties. ' + 'The legacy contextTypes property will be ignored.', name);
+        }
+      }
+
+      if (typeof instance.componentShouldUpdate === 'function') {
+        error('%s has a method called ' + 'componentShouldUpdate(). Did you mean shouldComponentUpdate()? ' + 'The name is phrased as a question because the function is ' + 'expected to return a value.', name);
+      }
+
+      if (ctor.prototype && ctor.prototype.isPureReactComponent && typeof instance.shouldComponentUpdate !== 'undefined') {
+        error('%s has a method called shouldComponentUpdate(). ' + 'shouldComponentUpdate should not be used when extending React.PureComponent. ' + 'Please extend React.Component if shouldComponentUpdate is used.', getComponentName(ctor) || 'A pure component');
+      }
+
+      if (typeof instance.componentDidUnmount === 'function') {
+        error('%s has a method called ' + 'componentDidUnmount(). But there is no such lifecycle method. ' + 'Did you mean componentWillUnmount()?', name);
+      }
+
+      if (typeof instance.componentDidReceiveProps === 'function') {
+        error('%s has a method called ' + 'componentDidReceiveProps(). But there is no such lifecycle method. ' + 'If you meant to update the state in response to changing props, ' + 'use componentWillReceiveProps(). If you meant to fetch data or ' + 'run side-effects or mutations after React has updated the UI, use componentDidUpdate().', name);
+      }
+
+      if (typeof instance.componentWillRecieveProps === 'function') {
+        error('%s has a method called ' + 'componentWillRecieveProps(). Did you mean componentWillReceiveProps()?', name);
+      }
+
+      if (typeof instance.UNSAFE_componentWillRecieveProps === 'function') {
+        error('%s has a method called ' + 'UNSAFE_componentWillRecieveProps(). Did you mean UNSAFE_componentWillReceiveProps()?', name);
+      }
+
+      var hasMutatedProps = instance.props !== newProps;
+
+      if (instance.props !== undefined && hasMutatedProps) {
+        error('%s(...): When calling super() in `%s`, make sure to pass ' + "up the same props that your component's constructor was passed.", name, name);
+      }
+
+      if (instance.defaultProps) {
+        error('Setting defaultProps as an instance property on %s is not supported and will be ignored.' + ' Instead, define defaultProps as a static property on %s.', name, name);
+      }
+
+      if (typeof instance.getSnapshotBeforeUpdate === 'function' && typeof instance.componentDidUpdate !== 'function' && !didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.has(ctor)) {
+        didWarnAboutGetSnapshotBeforeUpdateWithoutDidUpdate.add(ctor);
+
+        error('%s: getSnapshotBeforeUpdate() should be used with componentDidUpdate(). ' + 'This component defines getSnapshotBeforeUpdate() only.', getComponentName(ctor));
+      }
+
+      if (typeof instance.getDerivedStateFromProps === 'function') {
+        error('%s: getDerivedStateFromProps() is defined as an instance method ' + 'and will be ignored. Instead, declare it as a static method.', name);
+      }
+
+      if (typeof instance.getDerivedStateFromError === 'function') {
+        error('%s: getDerivedStateFromError() is defined as an instance method ' + 'and will be ignored. Instead, declare it as a static method.', name);
+      }
+
+      if (typeof ctor.getSnapshotBeforeUpdate === 'function') {
+        error('%s: getSnapshotBeforeUpdate() is defined as a static method ' + 'and will be ignored. Instead, declare it as an instance method.', name);
+      }
+
+      var _state = instance.state;
+
+      if (_state && (typeof _state !== 'object' || isArray(_state))) {
+        error('%s.state: must be set to an object or null', name);
+      }
+
+      if (typeof instance.getChildContext === 'function' && typeof ctor.childContextTypes !== 'object') {
+        error('%s.getChildContext(): childContextTypes must be defined in order to ' + 'use getChildContext().', name);
+      }
+    }
+  }
+
+  function adoptClassInstance(workInProgress, instance) {
+    instance.updater = classComponentUpdater;
+    workInProgress.stateNode = instance; // The instance needs access to the fiber so that it can schedule updates
+
+    set(instance, workInProgress);
+
+    {
+      instance._reactInternalInstance = fakeInternalInstance;
+    }
+  }
+
+  function constructClassInstance(workInProgress, ctor, props) {
+    var isLegacyContextConsumer = false;
+    var unmaskedContext = emptyContextObject;
+    var context = emptyContextObject;
+    var contextType = ctor.contextType;
+
+    {
+      if ('contextType' in ctor) {
+        var isValid = // Allow null for conditional declaration
+        contextType === null || contextType !== undefined && contextType.$$typeof === REACT_CONTEXT_TYPE && contextType._context === undefined; // Not a <Context.Consumer>
+
+        if (!isValid && !didWarnAboutInvalidateContextType.has(ctor)) {
+          didWarnAboutInvalidateContextType.add(ctor);
+          var addendum = '';
+
+          if (contextType === undefined) {
+            addendum = ' However, it is set to undefined. ' + 'This can be caused by a typo or by mixing up named and default imports. ' + 'This can also happen due to a circular dependency, so ' + 'try moving the createContext() call to a separate file.';
+          } else if (typeof contextType !== 'object') {
+            addendum = ' However, it is set to a ' + typeof contextType + '.';
+          } else if (contextType.$$typeof === REACT_PROVIDER_TYPE) {
+            addendum = ' Did you accidentally pass the Context.Provider instead?';
+          } else if (contextType._context !== undefined) {
+            // <Context.Consumer>
+            addendum = ' Did you accidentally pass the Context.Consumer instead?';
+          } else {
+            addendum = ' However, it is set to an object with keys {' + Object.keys(contextType).join(', ') + '}.';
+          }
+
+          error('%s defines an invalid contextType. ' + 'contextType should point to the Context object returned by React.createContext().%s', getComponentName(ctor) || 'Component', addendum);
+        }
+      }
+    }
+
+    if (typeof contextType === 'object' && contextType !== null) {
+      context = readContext(contextType);
+    } else {
+      unmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
+      var contextTypes = ctor.contextTypes;
+      isLegacyContextConsumer = contextTypes !== null && contextTypes !== undefined;
+      context = isLegacyContextConsumer ? getMaskedContext(workInProgress, unmaskedContext) : emptyContextObject;
+    } // Instantiate twice to help detect side-effects.
+
+
+    {
+      if ( workInProgress.mode & StrictMode) {
+        new ctor(props, context); // eslint-disable-line no-new
+      }
+    }
+
+    var instance = new ctor(props, context);
+    var state = workInProgress.memoizedState = instance.state !== null && instance.state !== undefined ? instance.state : null;
+    adoptClassInstance(workInProgress, instance);
+
+    {
+      if (typeof ctor.getDerivedStateFromProps === 'function' && state === null) {
+        var componentName = getComponentName(ctor) || 'Component';
+
+        if (!didWarnAboutUninitializedState.has(componentName)) {
+          didWarnAboutUninitializedState.add(componentName);
+
+          error('`%s` uses `getDerivedStateFromProps` but its initial state is ' + '%s. This is not recommended. Instead, define the initial state by ' + 'assigning an object to `this.state` in the constructor of `%s`. ' + 'This ensures that `getDerivedStateFromProps` arguments have a consistent shape.', componentName, instance.state === null ? 'null' : 'undefined', componentName);
+        }
+      } // If new component APIs are defined, "unsafe" lifecycles won't be called.
+      // Warn about these lifecycles if they are present.
+      // Don't warn about react-lifecycles-compat polyfilled methods though.
+
+
+      if (typeof ctor.getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function') {
+        var foundWillMountName = null;
+        var foundWillReceivePropsName = null;
+        var foundWillUpdateName = null;
+
+        if (typeof instance.componentWillMount === 'function' && instance.componentWillMount.__suppressDeprecationWarning !== true) {
+          foundWillMountName = 'componentWillMount';
+        } else if (typeof instance.UNSAFE_componentWillMount === 'function') {
+          foundWillMountName = 'UNSAFE_componentWillMount';
+        }
+
+        if (typeof instance.componentWillReceiveProps === 'function' && instance.componentWillReceiveProps.__suppressDeprecationWarning !== true) {
+          foundWillReceivePropsName = 'componentWillReceiveProps';
+        } else if (typeof instance.UNSAFE_componentWillReceiveProps === 'function') {
+          foundWillReceivePropsName = 'UNSAFE_componentWillReceiveProps';
+        }
+
+        if (typeof instance.componentWillUpdate === 'function' && instance.componentWillUpdate.__suppressDeprecationWarning !== true) {
+          foundWillUpdateName = 'componentWillUpdate';
+        } else if (typeof instance.UNSAFE_componentWillUpdate === 'function') {
+          foundWillUpdateName = 'UNSAFE_componentWillUpdate';
+        }
+
+        if (foundWillMountName !== null || foundWillReceivePropsName !== null || foundWillUpdateName !== null) {
+          var _componentName = getComponentName(ctor) || 'Component';
+
+          var newApiName = typeof ctor.getDerivedStateFromProps === 'function' ? 'getDerivedStateFromProps()' : 'getSnapshotBeforeUpdate()';
+
+          if (!didWarnAboutLegacyLifecyclesAndDerivedState.has(_componentName)) {
+            didWarnAboutLegacyLifecyclesAndDerivedState.add(_componentName);
+
+            error('Unsafe legacy lifecycles will not be called for components using new component APIs.\n\n' + '%s uses %s but also contains the following legacy lifecycles:%s%s%s\n\n' + 'The above lifecycles should be removed. Learn more about this warning here:\n' + 'https://fb.me/react-unsafe-component-lifecycles', _componentName, newApiName, foundWillMountName !== null ? "\n  " + foundWillMountName : '', foundWillReceivePropsName !== null ? "\n  " + foundWillReceivePropsName : '', foundWillUpdateName !== null ? "\n  " + foundWillUpdateName : '');
+          }
+        }
+      }
+    } // Cache unmasked context so we can avoid recreating masked context unless necessary.
+    // ReactFiberContext usually updates this cache but can't for newly-created instances.
+
+
+    if (isLegacyContextConsumer) {
+      cacheContext(workInProgress, unmaskedContext, context);
+    }
+
+    return instance;
+  }
+
+  function callComponentWillMount(workInProgress, instance) {
+    startPhaseTimer(workInProgress, 'componentWillMount');
+    var oldState = instance.state;
+
+    if (typeof instance.componentWillMount === 'function') {
+      instance.componentWillMount();
+    }
+
+    if (typeof instance.UNSAFE_componentWillMount === 'function') {
+      instance.UNSAFE_componentWillMount();
+    }
+
+    stopPhaseTimer();
+
+    if (oldState !== instance.state) {
+      {
+        error('%s.componentWillMount(): Assigning directly to this.state is ' + "deprecated (except inside a component's " + 'constructor). Use setState instead.', getComponentName(workInProgress.type) || 'Component');
+      }
+
+      classComponentUpdater.enqueueReplaceState(instance, instance.state, null);
+    }
+  }
+
+  function callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext) {
+    var oldState = instance.state;
+    startPhaseTimer(workInProgress, 'componentWillReceiveProps');
+
+    if (typeof instance.componentWillReceiveProps === 'function') {
+      instance.componentWillReceiveProps(newProps, nextContext);
+    }
+
+    if (typeof instance.UNSAFE_componentWillReceiveProps === 'function') {
+      instance.UNSAFE_componentWillReceiveProps(newProps, nextContext);
+    }
+
+    stopPhaseTimer();
+
+    if (instance.state !== oldState) {
+      {
+        var componentName = getComponentName(workInProgress.type) || 'Component';
+
+        if (!didWarnAboutStateAssignmentForComponent.has(componentName)) {
+          didWarnAboutStateAssignmentForComponent.add(componentName);
+
+          error('%s.componentWillReceiveProps(): Assigning directly to ' + "this.state is deprecated (except inside a component's " + 'constructor). Use setState instead.', componentName);
+        }
+      }
+
+      classComponentUpdater.enqueueReplaceState(instance, instance.state, null);
+    }
+  } // Invokes the mount life-cycles on a previously never rendered instance.
+
+
+  function mountClassInstance(workInProgress, ctor, newProps, renderExpirationTime) {
+    {
+      checkClassInstance(workInProgress, ctor, newProps);
+    }
+
+    var instance = workInProgress.stateNode;
+    instance.props = newProps;
+    instance.state = workInProgress.memoizedState;
+    instance.refs = emptyRefsObject;
+    initializeUpdateQueue(workInProgress);
+    var contextType = ctor.contextType;
+
+    if (typeof contextType === 'object' && contextType !== null) {
+      instance.context = readContext(contextType);
+    } else {
+      var unmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
+      instance.context = getMaskedContext(workInProgress, unmaskedContext);
+    }
+
+    {
+      if (instance.state === newProps) {
+        var componentName = getComponentName(ctor) || 'Component';
+
+        if (!didWarnAboutDirectlyAssigningPropsToState.has(componentName)) {
+          didWarnAboutDirectlyAssigningPropsToState.add(componentName);
+
+          error('%s: It is not recommended to assign props directly to state ' + "because updates to props won't be reflected in state. " + 'In most cases, it is better to use props directly.', componentName);
+        }
+      }
+
+      if (workInProgress.mode & StrictMode) {
+        ReactStrictModeWarnings.recordLegacyContextWarning(workInProgress, instance);
+      }
+
+      {
+        ReactStrictModeWarnings.recordUnsafeLifecycleWarnings(workInProgress, instance);
+      }
+    }
+
+    processUpdateQueue(workInProgress, newProps, instance, renderExpirationTime);
+    instance.state = workInProgress.memoizedState;
+    var getDerivedStateFromProps = ctor.getDerivedStateFromProps;
+
+    if (typeof getDerivedStateFromProps === 'function') {
+      applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps);
+      instance.state = workInProgress.memoizedState;
+    } // In order to support react-lifecycles-compat polyfilled components,
+    // Unsafe lifecycles should not be invoked for components using the new APIs.
+
+
+    if (typeof ctor.getDerivedStateFromProps !== 'function' && typeof instance.getSnapshotBeforeUpdate !== 'function' && (typeof instance.UNSAFE_componentWillMount === 'function' || typeof instance.componentWillMount === 'function')) {
+      callComponentWillMount(workInProgress, instance); // If we had additional state updates during this life-cycle, let's
+      // process them now.
+
+      processUpdateQueue(workInProgress, newProps, instance, renderExpirationTime);
+      instance.state = workInProgress.memoizedState;
+    }
+
+    if (typeof instance.componentDidMount === 'function') {
+      workInProgress.effectTag |= Update;
+    }
+  }
+
+  function resumeMountClassInstance(workInProgress, ctor, newProps, renderExpirationTime) {
+    var instance = workInProgress.stateNode;
+    var oldProps = workInProgress.memoizedProps;
+    instance.props = oldProps;
+    var oldContext = instance.context;
+    var contextType = ctor.contextType;
+    var nextContext = emptyContextObject;
+
+    if (typeof contextType === 'object' && contextType !== null) {
+      nextContext = readContext(contextType);
+    } else {
+      var nextLegacyUnmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
+      nextContext = getMaskedContext(workInProgress, nextLegacyUnmaskedContext);
+    }
+
+    var getDerivedStateFromProps = ctor.getDerivedStateFromProps;
+    var hasNewLifecycles = typeof getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function'; // Note: During these life-cycles, instance.props/instance.state are what
+    // ever the previously attempted to render - not the "current". However,
+    // during componentDidUpdate we pass the "current" props.
+    // In order to support react-lifecycles-compat polyfilled components,
+    // Unsafe lifecycles should not be invoked for components using the new APIs.
+
+    if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillReceiveProps === 'function' || typeof instance.componentWillReceiveProps === 'function')) {
+      if (oldProps !== newProps || oldContext !== nextContext) {
+        callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext);
+      }
+    }
+
+    resetHasForceUpdateBeforeProcessing();
+    var oldState = workInProgress.memoizedState;
+    var newState = instance.state = oldState;
+    processUpdateQueue(workInProgress, newProps, instance, renderExpirationTime);
+    newState = workInProgress.memoizedState;
+
+    if (oldProps === newProps && oldState === newState && !hasContextChanged() && !checkHasForceUpdateAfterProcessing()) {
+      // If an update was already in progress, we should schedule an Update
+      // effect even though we're bailing out, so that cWU/cDU are called.
+      if (typeof instance.componentDidMount === 'function') {
+        workInProgress.effectTag |= Update;
+      }
+
+      return false;
+    }
+
+    if (typeof getDerivedStateFromProps === 'function') {
+      applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps);
+      newState = workInProgress.memoizedState;
+    }
+
+    var shouldUpdate = checkHasForceUpdateAfterProcessing() || checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext);
+
+    if (shouldUpdate) {
+      // In order to support react-lifecycles-compat polyfilled components,
+      // Unsafe lifecycles should not be invoked for components using the new APIs.
+      if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillMount === 'function' || typeof instance.componentWillMount === 'function')) {
+        startPhaseTimer(workInProgress, 'componentWillMount');
+
+        if (typeof instance.componentWillMount === 'function') {
+          instance.componentWillMount();
+        }
+
+        if (typeof instance.UNSAFE_componentWillMount === 'function') {
+          instance.UNSAFE_componentWillMount();
+        }
+
+        stopPhaseTimer();
+      }
+
+      if (typeof instance.componentDidMount === 'function') {
+        workInProgress.effectTag |= Update;
+      }
+    } else {
+      // If an update was already in progress, we should schedule an Update
+      // effect even though we're bailing out, so that cWU/cDU are called.
+      if (typeof instance.componentDidMount === 'function') {
+        workInProgress.effectTag |= Update;
+      } // If shouldComponentUpdate returned false, we should still update the
+      // memoized state to indicate that this work can be reused.
+
+
+      workInProgress.memoizedProps = newProps;
+      workInProgress.memoizedState = newState;
+    } // Update the existing instance's state, props, and context pointers even
+    // if shouldComponentUpdate returns false.
+
+
+    instance.props = newProps;
+    instance.state = newState;
+    instance.context = nextContext;
+    return shouldUpdate;
+  } // Invokes the update life-cycles and returns false if it shouldn't rerender.
+
+
+  function updateClassInstance(current, workInProgress, ctor, newProps, renderExpirationTime) {
+    var instance = workInProgress.stateNode;
+    cloneUpdateQueue(current, workInProgress);
+    var oldProps = workInProgress.memoizedProps;
+    instance.props = workInProgress.type === workInProgress.elementType ? oldProps : resolveDefaultProps(workInProgress.type, oldProps);
+    var oldContext = instance.context;
+    var contextType = ctor.contextType;
+    var nextContext = emptyContextObject;
+
+    if (typeof contextType === 'object' && contextType !== null) {
+      nextContext = readContext(contextType);
+    } else {
+      var nextUnmaskedContext = getUnmaskedContext(workInProgress, ctor, true);
+      nextContext = getMaskedContext(workInProgress, nextUnmaskedContext);
+    }
+
+    var getDerivedStateFromProps = ctor.getDerivedStateFromProps;
+    var hasNewLifecycles = typeof getDerivedStateFromProps === 'function' || typeof instance.getSnapshotBeforeUpdate === 'function'; // Note: During these life-cycles, instance.props/instance.state are what
+    // ever the previously attempted to render - not the "current". However,
+    // during componentDidUpdate we pass the "current" props.
+    // In order to support react-lifecycles-compat polyfilled components,
+    // Unsafe lifecycles should not be invoked for components using the new APIs.
+
+    if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillReceiveProps === 'function' || typeof instance.componentWillReceiveProps === 'function')) {
+      if (oldProps !== newProps || oldContext !== nextContext) {
+        callComponentWillReceiveProps(workInProgress, instance, newProps, nextContext);
+      }
+    }
+
+    resetHasForceUpdateBeforeProcessing();
+    var oldState = workInProgress.memoizedState;
+    var newState = instance.state = oldState;
+    processUpdateQueue(workInProgress, newProps, instance, renderExpirationTime);
+    newState = workInProgress.memoizedState;
+
+    if (oldProps === newProps && oldState === newState && !hasContextChanged() && !checkHasForceUpdateAfterProcessing()) {
+      // If an update was already in progress, we should schedule an Update
+      // effect even though we're bailing out, so that cWU/cDU are called.
+      if (typeof instance.componentDidUpdate === 'function') {
+        if (oldProps !== current.memoizedProps || oldState !== current.memoizedState) {
+          workInProgress.effectTag |= Update;
+        }
+      }
+
+      if (typeof instance.getSnapshotBeforeUpdate === 'function') {
+        if (oldProps !== current.memoizedProps || oldState !== current.memoizedState) {
+          workInProgress.effectTag |= Snapshot;
+        }
+      }
+
+      return false;
+    }
+
+    if (typeof getDerivedStateFromProps === 'function') {
+      applyDerivedStateFromProps(workInProgress, ctor, getDerivedStateFromProps, newProps);
+      newState = workInProgress.memoizedState;
+    }
+
+    var shouldUpdate = checkHasForceUpdateAfterProcessing() || checkShouldComponentUpdate(workInProgress, ctor, oldProps, newProps, oldState, newState, nextContext);
+
+    if (shouldUpdate) {
+      // In order to support react-lifecycles-compat polyfilled components,
+      // Unsafe lifecycles should not be invoked for components using the new APIs.
+      if (!hasNewLifecycles && (typeof instance.UNSAFE_componentWillUpdate === 'function' || typeof instance.componentWillUpdate === 'function')) {
+        startPhaseTimer(workInProgress, 'componentWillUpdate');
+
+        if (typeof instance.componentWillUpdate === 'function') {
+          instance.componentWillUpdate(newProps, newState, nextContext);
+        }
+
+        if (typeof instance.UNSAFE_componentWillUpdate === 'function') {
+          instance.UNSAFE_componentWillUpdate(newProps, newState, nextContext);
+        }
+
+        stopPhaseTimer();
+      }
+
+      if (typeof instance.componentDidUpdate === 'function') {
+        workInProgress.effectTag |= Update;
+      }
+
+      if (typeof instance.getSnapshotBeforeUpdate === 'function') {
+        workInProgress.effectTag |= Snapshot;
+      }
+    } else {
+      // If an update was already in progress, we should schedule an Update
+      // effect even though we're bailing out, so that cWU/cDU are called.
+      if (typeof instance.componentDidUpdate === 'function') {
+        if (oldProps !== current.memoizedProps || oldState !== current.memoizedState) {
+          workInProgress.effectTag |= Update;
+        }
+      }
+
+      if (typeof instance.getSnapshotBeforeUpdate === 'function') {
+        if (oldProps !== current.memoizedProps || oldState !== current.memoizedState) {
+          workInProgress.effectTag |= Snapshot;
+        }
+      } // If shouldComponentUpdate returned false, we should still update the
+      // memoized props/state to indicate that this work can be reused.
+
+
+      workInProgress.memoizedProps = newProps;
+      workInProgress.memoizedState = newState;
+    } // Update the existing instance's state, props, and context pointers even
+    // if shouldComponentUpdate returns false.
+
+
+    instance.props = newProps;
+    instance.state = newState;
+    instance.context = nextContext;
+    return shouldUpdate;
+  }
+
+  var didWarnAboutMaps;
+  var didWarnAboutGenerators;
+  var didWarnAboutStringRefs;
+  var ownerHasKeyUseWarning;
+  var ownerHasFunctionTypeWarning;
+
+  var warnForMissingKey = function (child) {};
+
+  {
+    didWarnAboutMaps = false;
+    didWarnAboutGenerators = false;
+    didWarnAboutStringRefs = {};
+    /**
+     * Warn if there's no key explicitly set on dynamic arrays of children or
+     * object keys are not valid. This allows us to keep track of children between
+     * updates.
+     */
+
+    ownerHasKeyUseWarning = {};
+    ownerHasFunctionTypeWarning = {};
+
+    warnForMissingKey = function (child) {
+      if (child === null || typeof child !== 'object') {
+        return;
+      }
+
+      if (!child._store || child._store.validated || child.key != null) {
+        return;
+      }
+
+      if (!(typeof child._store === 'object')) {
+        {
+          throw Error( "React Component in warnForMissingKey should have a _store. This error is likely caused by a bug in React. Please file an issue." );
+        }
+      }
+
+      child._store.validated = true;
+      var currentComponentErrorInfo = 'Each child in a list should have a unique ' + '"key" prop. See https://fb.me/react-warning-keys for ' + 'more information.' + getCurrentFiberStackInDev();
+
+      if (ownerHasKeyUseWarning[currentComponentErrorInfo]) {
+        return;
+      }
+
+      ownerHasKeyUseWarning[currentComponentErrorInfo] = true;
+
+      error('Each child in a list should have a unique ' + '"key" prop. See https://fb.me/react-warning-keys for ' + 'more information.');
+    };
+  }
+
+  var isArray$1 = Array.isArray;
+
+  function coerceRef(returnFiber, current, element) {
+    var mixedRef = element.ref;
+
+    if (mixedRef !== null && typeof mixedRef !== 'function' && typeof mixedRef !== 'object') {
+      {
+        // TODO: Clean this up once we turn on the string ref warning for
+        // everyone, because the strict mode case will no longer be relevant
+        if ((returnFiber.mode & StrictMode || warnAboutStringRefs) && // We warn in ReactElement.js if owner and self are equal for string refs
+        // because these cannot be automatically converted to an arrow function
+        // using a codemod. Therefore, we don't have to warn about string refs again.
+        !(element._owner && element._self && element._owner.stateNode !== element._self)) {
+          var componentName = getComponentName(returnFiber.type) || 'Component';
+
+          if (!didWarnAboutStringRefs[componentName]) {
+            {
+              error('A string ref, "%s", has been found within a strict mode tree. ' + 'String refs are a source of potential bugs and should be avoided. ' + 'We recommend using useRef() or createRef() instead. ' + 'Learn more about using refs safely here: ' + 'https://fb.me/react-strict-mode-string-ref%s', mixedRef, getStackByFiberInDevAndProd(returnFiber));
+            }
+
+            didWarnAboutStringRefs[componentName] = true;
+          }
+        }
+      }
+
+      if (element._owner) {
+        var owner = element._owner;
+        var inst;
+
+        if (owner) {
+          var ownerFiber = owner;
+
+          if (!(ownerFiber.tag === ClassComponent)) {
+            {
+              throw Error( "Function components cannot have string refs. We recommend using useRef() instead. Learn more about using refs safely here: https://fb.me/react-strict-mode-string-ref" );
+            }
+          }
+
+          inst = ownerFiber.stateNode;
+        }
+
+        if (!inst) {
+          {
+            throw Error( "Missing owner for string ref " + mixedRef + ". This error is likely caused by a bug in React. Please file an issue." );
+          }
+        }
+
+        var stringRef = '' + mixedRef; // Check if previous string ref matches new string ref
+
+        if (current !== null && current.ref !== null && typeof current.ref === 'function' && current.ref._stringRef === stringRef) {
+          return current.ref;
+        }
+
+        var ref = function (value) {
+          var refs = inst.refs;
+
+          if (refs === emptyRefsObject) {
+            // This is a lazy pooled frozen object, so we need to initialize.
+            refs = inst.refs = {};
+          }
+
+          if (value === null) {
+            delete refs[stringRef];
+          } else {
+            refs[stringRef] = value;
+          }
+        };
+
+        ref._stringRef = stringRef;
+        return ref;
+      } else {
+        if (!(typeof mixedRef === 'string')) {
+          {
+            throw Error( "Expected ref to be a function, a string, an object returned by React.createRef(), or null." );
+          }
+        }
+
+        if (!element._owner) {
+          {
+            throw Error( "Element ref was specified as a string (" + mixedRef + ") but no owner was set. This could happen for one of the following reasons:\n1. You may be adding a ref to a function component\n2. You may be adding a ref to a component that was not created inside a component's render method\n3. You have multiple copies of React loaded\nSee https://fb.me/react-refs-must-have-owner for more information." );
+          }
+        }
+      }
+    }
+
+    return mixedRef;
+  }
+
+  function throwOnInvalidObjectType(returnFiber, newChild) {
+    if (returnFiber.type !== 'textarea') {
+      var addendum = '';
+
+      {
+        addendum = ' If you meant to render a collection of children, use an array ' + 'instead.' + getCurrentFiberStackInDev();
+      }
+
+      {
+        {
+          throw Error( "Objects are not valid as a React child (found: " + (Object.prototype.toString.call(newChild) === '[object Object]' ? 'object with keys {' + Object.keys(newChild).join(', ') + '}' : newChild) + ")." + addendum );
+        }
+      }
+    }
+  }
+
+  function warnOnFunctionType() {
+    {
+      var currentComponentErrorInfo = 'Functions are not valid as a React child. This may happen if ' + 'you return a Component instead of <Component /> from render. ' + 'Or maybe you meant to call this function rather than return it.' + getCurrentFiberStackInDev();
+
+      if (ownerHasFunctionTypeWarning[currentComponentErrorInfo]) {
+        return;
+      }
+
+      ownerHasFunctionTypeWarning[currentComponentErrorInfo] = true;
+
+      error('Functions are not valid as a React child. This may happen if ' + 'you return a Component instead of <Component /> from render. ' + 'Or maybe you meant to call this function rather than return it.');
+    }
+  } // This wrapper function exists because I expect to clone the code in each path
+  // to be able to optimize each path individually by branching early. This needs
+  // a compiler or we can do it manually. Helpers that don't need this branching
+  // live outside of this function.
+
+
+  function ChildReconciler(shouldTrackSideEffects) {
+    function deleteChild(returnFiber, childToDelete) {
+      if (!shouldTrackSideEffects) {
+        // Noop.
+        return;
+      } // Deletions are added in reversed order so we add it to the front.
+      // At this point, the return fiber's effect list is empty except for
+      // deletions, so we can just append the deletion to the list. The remaining
+      // effects aren't added until the complete phase. Once we implement
+      // resuming, this may not be true.
+
+
+      var last = returnFiber.lastEffect;
+
+      if (last !== null) {
+        last.nextEffect = childToDelete;
+        returnFiber.lastEffect = childToDelete;
+      } else {
+        returnFiber.firstEffect = returnFiber.lastEffect = childToDelete;
+      }
+
+      childToDelete.nextEffect = null;
+      childToDelete.effectTag = Deletion;
+    }
+
+    function deleteRemainingChildren(returnFiber, currentFirstChild) {
+      if (!shouldTrackSideEffects) {
+        // Noop.
+        return null;
+      } // TODO: For the shouldClone case, this could be micro-optimized a bit by
+      // assuming that after the first child we've already added everything.
+
+
+      var childToDelete = currentFirstChild;
+
+      while (childToDelete !== null) {
+        deleteChild(returnFiber, childToDelete);
+        childToDelete = childToDelete.sibling;
+      }
+
+      return null;
+    }
+
+    function mapRemainingChildren(returnFiber, currentFirstChild) {
+      // Add the remaining children to a temporary map so that we can find them by
+      // keys quickly. Implicit (null) keys get added to this set with their index
+      // instead.
+      var existingChildren = new Map();
+      var existingChild = currentFirstChild;
+
+      while (existingChild !== null) {
+        if (existingChild.key !== null) {
+          existingChildren.set(existingChild.key, existingChild);
+        } else {
+          existingChildren.set(existingChild.index, existingChild);
+        }
+
+        existingChild = existingChild.sibling;
+      }
+
+      return existingChildren;
+    }
+
+    function useFiber(fiber, pendingProps) {
+      // We currently set sibling to null and index to 0 here because it is easy
+      // to forget to do before returning it. E.g. for the single child case.
+      var clone = createWorkInProgress(fiber, pendingProps);
+      clone.index = 0;
+      clone.sibling = null;
+      return clone;
+    }
+
+    function placeChild(newFiber, lastPlacedIndex, newIndex) {
+      newFiber.index = newIndex;
+
+      if (!shouldTrackSideEffects) {
+        // Noop.
+        return lastPlacedIndex;
+      }
+
+      var current = newFiber.alternate;
+
+      if (current !== null) {
+        var oldIndex = current.index;
+
+        if (oldIndex < lastPlacedIndex) {
+          // This is a move.
+          newFiber.effectTag = Placement;
+          return lastPlacedIndex;
+        } else {
+          // This item can stay in place.
+          return oldIndex;
+        }
+      } else {
+        // This is an insertion.
+        newFiber.effectTag = Placement;
+        return lastPlacedIndex;
+      }
+    }
+
+    function placeSingleChild(newFiber) {
+      // This is simpler for the single child case. We only need to do a
+      // placement for inserting new children.
+      if (shouldTrackSideEffects && newFiber.alternate === null) {
+        newFiber.effectTag = Placement;
+      }
+
+      return newFiber;
+    }
+
+    function updateTextNode(returnFiber, current, textContent, expirationTime) {
+      if (current === null || current.tag !== HostText) {
+        // Insert
+        var created = createFiberFromText(textContent, returnFiber.mode, expirationTime);
+        created.return = returnFiber;
+        return created;
+      } else {
+        // Update
+        var existing = useFiber(current, textContent);
+        existing.return = returnFiber;
+        return existing;
+      }
+    }
+
+    function updateElement(returnFiber, current, element, expirationTime) {
+      if (current !== null) {
+        if (current.elementType === element.type || ( // Keep this check inline so it only runs on the false path:
+         isCompatibleFamilyForHotReloading(current, element) )) {
+          // Move based on index
+          var existing = useFiber(current, element.props);
+          existing.ref = coerceRef(returnFiber, current, element);
+          existing.return = returnFiber;
+
+          {
+            existing._debugSource = element._source;
+            existing._debugOwner = element._owner;
+          }
+
+          return existing;
+        }
+      } // Insert
+
+
+      var created = createFiberFromElement(element, returnFiber.mode, expirationTime);
+      created.ref = coerceRef(returnFiber, current, element);
+      created.return = returnFiber;
+      return created;
+    }
+
+    function updatePortal(returnFiber, current, portal, expirationTime) {
+      if (current === null || current.tag !== HostPortal || current.stateNode.containerInfo !== portal.containerInfo || current.stateNode.implementation !== portal.implementation) {
+        // Insert
+        var created = createFiberFromPortal(portal, returnFiber.mode, expirationTime);
+        created.return = returnFiber;
+        return created;
+      } else {
+        // Update
+        var existing = useFiber(current, portal.children || []);
+        existing.return = returnFiber;
+        return existing;
+      }
+    }
+
+    function updateFragment(returnFiber, current, fragment, expirationTime, key) {
+      if (current === null || current.tag !== Fragment) {
+        // Insert
+        var created = createFiberFromFragment(fragment, returnFiber.mode, expirationTime, key);
+        created.return = returnFiber;
+        return created;
+      } else {
+        // Update
+        var existing = useFiber(current, fragment);
+        existing.return = returnFiber;
+        return existing;
+      }
+    }
+
+    function createChild(returnFiber, newChild, expirationTime) {
+      if (typeof newChild === 'string' || typeof newChild === 'number') {
+        // Text nodes don't have keys. If the previous node is implicitly keyed
+        // we can continue to replace it without aborting even if it is not a text
+        // node.
+        var created = createFiberFromText('' + newChild, returnFiber.mode, expirationTime);
+        created.return = returnFiber;
+        return created;
+      }
+
+      if (typeof newChild === 'object' && newChild !== null) {
+        switch (newChild.$$typeof) {
+          case REACT_ELEMENT_TYPE:
+            {
+              var _created = createFiberFromElement(newChild, returnFiber.mode, expirationTime);
+
+              _created.ref = coerceRef(returnFiber, null, newChild);
+              _created.return = returnFiber;
+              return _created;
+            }
+
+          case REACT_PORTAL_TYPE:
+            {
+              var _created2 = createFiberFromPortal(newChild, returnFiber.mode, expirationTime);
+
+              _created2.return = returnFiber;
+              return _created2;
+            }
+        }
+
+        if (isArray$1(newChild) || getIteratorFn(newChild)) {
+          var _created3 = createFiberFromFragment(newChild, returnFiber.mode, expirationTime, null);
+
+          _created3.return = returnFiber;
+          return _created3;
+        }
+
+        throwOnInvalidObjectType(returnFiber, newChild);
+      }
+
+      {
+        if (typeof newChild === 'function') {
+          warnOnFunctionType();
+        }
+      }
+
+      return null;
+    }
+
+    function updateSlot(returnFiber, oldFiber, newChild, expirationTime) {
+      // Update the fiber if the keys match, otherwise return null.
+      var key = oldFiber !== null ? oldFiber.key : null;
+
+      if (typeof newChild === 'string' || typeof newChild === 'number') {
+        // Text nodes don't have keys. If the previous node is implicitly keyed
+        // we can continue to replace it without aborting even if it is not a text
+        // node.
+        if (key !== null) {
+          return null;
+        }
+
+        return updateTextNode(returnFiber, oldFiber, '' + newChild, expirationTime);
+      }
+
+      if (typeof newChild === 'object' && newChild !== null) {
+        switch (newChild.$$typeof) {
+          case REACT_ELEMENT_TYPE:
+            {
+              if (newChild.key === key) {
+                if (newChild.type === REACT_FRAGMENT_TYPE) {
+                  return updateFragment(returnFiber, oldFiber, newChild.props.children, expirationTime, key);
+                }
+
+                return updateElement(returnFiber, oldFiber, newChild, expirationTime);
+              } else {
+                return null;
+              }
+            }
+
+          case REACT_PORTAL_TYPE:
+            {
+              if (newChild.key === key) {
+                return updatePortal(returnFiber, oldFiber, newChild, expirationTime);
+              } else {
+                return null;
+              }
+            }
+        }
+
+        if (isArray$1(newChild) || getIteratorFn(newChild)) {
+          if (key !== null) {
+            return null;
+          }
+
+          return updateFragment(returnFiber, oldFiber, newChild, expirationTime, null);
+        }
+
+        throwOnInvalidObjectType(returnFiber, newChild);
+      }
+
+      {
+        if (typeof newChild === 'function') {
+          warnOnFunctionType();
+        }
+      }
+
+      return null;
+    }
+
+    function updateFromMap(existingChildren, returnFiber, newIdx, newChild, expirationTime) {
+      if (typeof newChild === 'string' || typeof newChild === 'number') {
+        // Text nodes don't have keys, so we neither have to check the old nor
+        // new node for the key. If both are text nodes, they match.
+        var matchedFiber = existingChildren.get(newIdx) || null;
+        return updateTextNode(returnFiber, matchedFiber, '' + newChild, expirationTime);
+      }
+
+      if (typeof newChild === 'object' && newChild !== null) {
+        switch (newChild.$$typeof) {
+          case REACT_ELEMENT_TYPE:
+            {
+              var _matchedFiber = existingChildren.get(newChild.key === null ? newIdx : newChild.key) || null;
+
+              if (newChild.type === REACT_FRAGMENT_TYPE) {
+                return updateFragment(returnFiber, _matchedFiber, newChild.props.children, expirationTime, newChild.key);
+              }
+
+              return updateElement(returnFiber, _matchedFiber, newChild, expirationTime);
+            }
+
+          case REACT_PORTAL_TYPE:
+            {
+              var _matchedFiber2 = existingChildren.get(newChild.key === null ? newIdx : newChild.key) || null;
+
+              return updatePortal(returnFiber, _matchedFiber2, newChild, expirationTime);
+            }
+        }
+
+        if (isArray$1(newChild) || getIteratorFn(newChild)) {
+          var _matchedFiber3 = existingChildren.get(newIdx) || null;
+
+          return updateFragment(returnFiber, _matchedFiber3, newChild, expirationTime, null);
+        }
+
+        throwOnInvalidObjectType(returnFiber, newChild);
+      }
+
+      {
+        if (typeof newChild === 'function') {
+          warnOnFunctionType();
+        }
+      }
+
+      return null;
+    }
+    /**
+     * Warns if there is a duplicate or missing key
+     */
+
+
+    function warnOnInvalidKey(child, knownKeys) {
+      {
+        if (typeof child !== 'object' || child === null) {
+          return knownKeys;
+        }
+
+        switch (child.$$typeof) {
+          case REACT_ELEMENT_TYPE:
+          case REACT_PORTAL_TYPE:
+            warnForMissingKey(child);
+            var key = child.key;
+
+            if (typeof key !== 'string') {
+              break;
+            }
+
+            if (knownKeys === null) {
+              knownKeys = new Set();
+              knownKeys.add(key);
+              break;
+            }
+
+            if (!knownKeys.has(key)) {
+              knownKeys.add(key);
+              break;
+            }
+
+            error('Encountered two children with the same key, `%s`. ' + 'Keys should be unique so that components maintain their identity ' + 'across updates. Non-unique keys may cause children to be ' + 'duplicated and/or omitted — the behavior is unsupported and ' + 'could change in a future version.', key);
+
+            break;
+        }
+      }
+
+      return knownKeys;
+    }
+
+    function reconcileChildrenArray(returnFiber, currentFirstChild, newChildren, expirationTime) {
+      // This algorithm can't optimize by searching from both ends since we
+      // don't have backpointers on fibers. I'm trying to see how far we can get
+      // with that model. If it ends up not being worth the tradeoffs, we can
+      // add it later.
+      // Even with a two ended optimization, we'd want to optimize for the case
+      // where there are few changes and brute force the comparison instead of
+      // going for the Map. It'd like to explore hitting that path first in
+      // forward-only mode and only go for the Map once we notice that we need
+      // lots of look ahead. This doesn't handle reversal as well as two ended
+      // search but that's unusual. Besides, for the two ended optimization to
+      // work on Iterables, we'd need to copy the whole set.
+      // In this first iteration, we'll just live with hitting the bad case
+      // (adding everything to a Map) in for every insert/move.
+      // If you change this code, also update reconcileChildrenIterator() which
+      // uses the same algorithm.
+      {
+        // First, validate keys.
+        var knownKeys = null;
+
+        for (var i = 0; i < newChildren.length; i++) {
+          var child = newChildren[i];
+          knownKeys = warnOnInvalidKey(child, knownKeys);
+        }
+      }
+
+      var resultingFirstChild = null;
+      var previousNewFiber = null;
+      var oldFiber = currentFirstChild;
+      var lastPlacedIndex = 0;
+      var newIdx = 0;
+      var nextOldFiber = null;
+
+      for (; oldFiber !== null && newIdx < newChildren.length; newIdx++) {
+        if (oldFiber.index > newIdx) {
+          nextOldFiber = oldFiber;
+          oldFiber = null;
+        } else {
+          nextOldFiber = oldFiber.sibling;
+        }
+
+        var newFiber = updateSlot(returnFiber, oldFiber, newChildren[newIdx], expirationTime);
+
+        if (newFiber === null) {
+          // TODO: This breaks on empty slots like null children. That's
+          // unfortunate because it triggers the slow path all the time. We need
+          // a better way to communicate whether this was a miss or null,
+          // boolean, undefined, etc.
+          if (oldFiber === null) {
+            oldFiber = nextOldFiber;
+          }
+
+          break;
+        }
+
+        if (shouldTrackSideEffects) {
+          if (oldFiber && newFiber.alternate === null) {
+            // We matched the slot, but we didn't reuse the existing fiber, so we
+            // need to delete the existing child.
+            deleteChild(returnFiber, oldFiber);
+          }
+        }
+
+        lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx);
+
+        if (previousNewFiber === null) {
+          // TODO: Move out of the loop. This only happens for the first run.
+          resultingFirstChild = newFiber;
+        } else {
+          // TODO: Defer siblings if we're not at the right index for this slot.
+          // I.e. if we had null values before, then we want to defer this
+          // for each null value. However, we also don't want to call updateSlot
+          // with the previous one.
+          previousNewFiber.sibling = newFiber;
+        }
+
+        previousNewFiber = newFiber;
+        oldFiber = nextOldFiber;
+      }
+
+      if (newIdx === newChildren.length) {
+        // We've reached the end of the new children. We can delete the rest.
+        deleteRemainingChildren(returnFiber, oldFiber);
+        return resultingFirstChild;
+      }
+
+      if (oldFiber === null) {
+        // If we don't have any more existing children we can choose a fast path
+        // since the rest will all be insertions.
+        for (; newIdx < newChildren.length; newIdx++) {
+          var _newFiber = createChild(returnFiber, newChildren[newIdx], expirationTime);
+
+          if (_newFiber === null) {
+            continue;
+          }
+
+          lastPlacedIndex = placeChild(_newFiber, lastPlacedIndex, newIdx);
+
+          if (previousNewFiber === null) {
+            // TODO: Move out of the loop. This only happens for the first run.
+            resultingFirstChild = _newFiber;
+          } else {
+            previousNewFiber.sibling = _newFiber;
+          }
+
+          previousNewFiber = _newFiber;
+        }
+
+        return resultingFirstChild;
+      } // Add all children to a key map for quick lookups.
+
+
+      var existingChildren = mapRemainingChildren(returnFiber, oldFiber); // Keep scanning and use the map to restore deleted items as moves.
+
+      for (; newIdx < newChildren.length; newIdx++) {
+        var _newFiber2 = updateFromMap(existingChildren, returnFiber, newIdx, newChildren[newIdx], expirationTime);
+
+        if (_newFiber2 !== null) {
+          if (shouldTrackSideEffects) {
+            if (_newFiber2.alternate !== null) {
+              // The new fiber is a work in progress, but if there exists a
+              // current, that means that we reused the fiber. We need to delete
+              // it from the child list so that we don't add it to the deletion
+              // list.
+              existingChildren.delete(_newFiber2.key === null ? newIdx : _newFiber2.key);
+            }
+          }
+
+          lastPlacedIndex = placeChild(_newFiber2, lastPlacedIndex, newIdx);
+
+          if (previousNewFiber === null) {
+            resultingFirstChild = _newFiber2;
+          } else {
+            previousNewFiber.sibling = _newFiber2;
+          }
+
+          previousNewFiber = _newFiber2;
+        }
+      }
+
+      if (shouldTrackSideEffects) {
+        // Any existing children that weren't consumed above were deleted. We need
+        // to add them to the deletion list.
+        existingChildren.forEach(function (child) {
+          return deleteChild(returnFiber, child);
+        });
+      }
+
+      return resultingFirstChild;
+    }
+
+    function reconcileChildrenIterator(returnFiber, currentFirstChild, newChildrenIterable, expirationTime) {
+      // This is the same implementation as reconcileChildrenArray(),
+      // but using the iterator instead.
+      var iteratorFn = getIteratorFn(newChildrenIterable);
+
+      if (!(typeof iteratorFn === 'function')) {
+        {
+          throw Error( "An object is not an iterable. This error is likely caused by a bug in React. Please file an issue." );
+        }
+      }
+
+      {
+        // We don't support rendering Generators because it's a mutation.
+        // See https://github.com/facebook/react/issues/12995
+        if (typeof Symbol === 'function' && // $FlowFixMe Flow doesn't know about toStringTag
+        newChildrenIterable[Symbol.toStringTag] === 'Generator') {
+          if (!didWarnAboutGenerators) {
+            error('Using Generators as children is unsupported and will likely yield ' + 'unexpected results because enumerating a generator mutates it. ' + 'You may convert it to an array with `Array.from()` or the ' + '`[...spread]` operator before rendering. Keep in mind ' + 'you might need to polyfill these features for older browsers.');
+          }
+
+          didWarnAboutGenerators = true;
+        } // Warn about using Maps as children
+
+
+        if (newChildrenIterable.entries === iteratorFn) {
+          if (!didWarnAboutMaps) {
+            error('Using Maps as children is unsupported and will likely yield ' + 'unexpected results. Convert it to a sequence/iterable of keyed ' + 'ReactElements instead.');
+          }
+
+          didWarnAboutMaps = true;
+        } // First, validate keys.
+        // We'll get a different iterator later for the main pass.
+
+
+        var _newChildren = iteratorFn.call(newChildrenIterable);
+
+        if (_newChildren) {
+          var knownKeys = null;
+
+          var _step = _newChildren.next();
+
+          for (; !_step.done; _step = _newChildren.next()) {
+            var child = _step.value;
+            knownKeys = warnOnInvalidKey(child, knownKeys);
+          }
+        }
+      }
+
+      var newChildren = iteratorFn.call(newChildrenIterable);
+
+      if (!(newChildren != null)) {
+        {
+          throw Error( "An iterable object provided no iterator." );
+        }
+      }
+
+      var resultingFirstChild = null;
+      var previousNewFiber = null;
+      var oldFiber = currentFirstChild;
+      var lastPlacedIndex = 0;
+      var newIdx = 0;
+      var nextOldFiber = null;
+      var step = newChildren.next();
+
+      for (; oldFiber !== null && !step.done; newIdx++, step = newChildren.next()) {
+        if (oldFiber.index > newIdx) {
+          nextOldFiber = oldFiber;
+          oldFiber = null;
+        } else {
+          nextOldFiber = oldFiber.sibling;
+        }
+
+        var newFiber = updateSlot(returnFiber, oldFiber, step.value, expirationTime);
+
+        if (newFiber === null) {
+          // TODO: This breaks on empty slots like null children. That's
+          // unfortunate because it triggers the slow path all the time. We need
+          // a better way to communicate whether this was a miss or null,
+          // boolean, undefined, etc.
+          if (oldFiber === null) {
+            oldFiber = nextOldFiber;
+          }
+
+          break;
+        }
+
+        if (shouldTrackSideEffects) {
+          if (oldFiber && newFiber.alternate === null) {
+            // We matched the slot, but we didn't reuse the existing fiber, so we
+            // need to delete the existing child.
+            deleteChild(returnFiber, oldFiber);
+          }
+        }
+
+        lastPlacedIndex = placeChild(newFiber, lastPlacedIndex, newIdx);
+
+        if (previousNewFiber === null) {
+          // TODO: Move out of the loop. This only happens for the first run.
+          resultingFirstChild = newFiber;
+        } else {
+          // TODO: Defer siblings if we're not at the right index for this slot.
+          // I.e. if we had null values before, then we want to defer this
+          // for each null value. However, we also don't want to call updateSlot
+          // with the previous one.
+          previousNewFiber.sibling = newFiber;
+        }
+
+        previousNewFiber = newFiber;
+        oldFiber = nextOldFiber;
+      }
+
+      if (step.done) {
+        // We've reached the end of the new children. We can delete the rest.
+        deleteRemainingChildren(returnFiber, oldFiber);
+        return resultingFirstChild;
+      }
+
+      if (oldFiber === null) {
+        // If we don't have any more existing children we can choose a fast path
+        // since the rest will all be insertions.
+        for (; !step.done; newIdx++, step = newChildren.next()) {
+          var _newFiber3 = createChild(returnFiber, step.value, expirationTime);
+
+          if (_newFiber3 === null) {
+            continue;
+          }
+
+          lastPlacedIndex = placeChild(_newFiber3, lastPlacedIndex, newIdx);
+
+          if (previousNewFiber === null) {
+            // TODO: Move out of the loop. This only happens for the first run.
+            resultingFirstChild = _newFiber3;
+          } else {
+            previousNewFiber.sibling = _newFiber3;
+          }
+
+          previousNewFiber = _newFiber3;
+        }
+
+        return resultingFirstChild;
+      } // Add all children to a key map for quick lookups.
+
+
+      var existingChildren = mapRemainingChildren(returnFiber, oldFiber); // Keep scanning and use the map to restore deleted items as moves.
+
+      for (; !step.done; newIdx++, step = newChildren.next()) {
+        var _newFiber4 = updateFromMap(existingChildren, returnFiber, newIdx, step.value, expirationTime);
+
+        if (_newFiber4 !== null) {
+          if (shouldTrackSideEffects) {
+            if (_newFiber4.alternate !== null) {
+              // The new fiber is a work in progress, but if there exists a
+              // current, that means that we reused the fiber. We need to delete
+              // it from the child list so that we don't add it to the deletion
+              // list.
+              existingChildren.delete(_newFiber4.key === null ? newIdx : _newFiber4.key);
+            }
+          }
+
+          lastPlacedIndex = placeChild(_newFiber4, lastPlacedIndex, newIdx);
+
+          if (previousNewFiber === null) {
+            resultingFirstChild = _newFiber4;
+          } else {
+            previousNewFiber.sibling = _newFiber4;
+          }
+
+          previousNewFiber = _newFiber4;
+        }
+      }
+
+      if (shouldTrackSideEffects) {
+        // Any existing children that weren't consumed above were deleted. We need
+        // to add them to the deletion list.
+        existingChildren.forEach(function (child) {
+          return deleteChild(returnFiber, child);
+        });
+      }
+
+      return resultingFirstChild;
+    }
+
+    function reconcileSingleTextNode(returnFiber, currentFirstChild, textContent, expirationTime) {
+      // There's no need to check for keys on text nodes since we don't have a
+      // way to define them.
+      if (currentFirstChild !== null && currentFirstChild.tag === HostText) {
+        // We already have an existing node so let's just update it and delete
+        // the rest.
+        deleteRemainingChildren(returnFiber, currentFirstChild.sibling);
+        var existing = useFiber(currentFirstChild, textContent);
+        existing.return = returnFiber;
+        return existing;
+      } // The existing first child is not a text node so we need to create one
+      // and delete the existing ones.
+
+
+      deleteRemainingChildren(returnFiber, currentFirstChild);
+      var created = createFiberFromText(textContent, returnFiber.mode, expirationTime);
+      created.return = returnFiber;
+      return created;
+    }
+
+    function reconcileSingleElement(returnFiber, currentFirstChild, element, expirationTime) {
+      var key = element.key;
+      var child = currentFirstChild;
+
+      while (child !== null) {
+        // TODO: If key === null and child.key === null, then this only applies to
+        // the first item in the list.
+        if (child.key === key) {
+          switch (child.tag) {
+            case Fragment:
+              {
+                if (element.type === REACT_FRAGMENT_TYPE) {
+                  deleteRemainingChildren(returnFiber, child.sibling);
+                  var existing = useFiber(child, element.props.children);
+                  existing.return = returnFiber;
+
+                  {
+                    existing._debugSource = element._source;
+                    existing._debugOwner = element._owner;
+                  }
+
+                  return existing;
+                }
+
+                break;
+              }
+
+            case Block:
+
+            // We intentionally fallthrough here if enableBlocksAPI is not on.
+            // eslint-disable-next-lined no-fallthrough
+
+            default:
+              {
+                if (child.elementType === element.type || ( // Keep this check inline so it only runs on the false path:
+                 isCompatibleFamilyForHotReloading(child, element) )) {
+                  deleteRemainingChildren(returnFiber, child.sibling);
+
+                  var _existing3 = useFiber(child, element.props);
+
+                  _existing3.ref = coerceRef(returnFiber, child, element);
+                  _existing3.return = returnFiber;
+
+                  {
+                    _existing3._debugSource = element._source;
+                    _existing3._debugOwner = element._owner;
+                  }
+
+                  return _existing3;
+                }
+
+                break;
+              }
+          } // Didn't match.
+
+
+          deleteRemainingChildren(returnFiber, child);
+          break;
+        } else {
+          deleteChild(returnFiber, child);
+        }
+
+        child = child.sibling;
+      }
+
+      if (element.type === REACT_FRAGMENT_TYPE) {
+        var created = createFiberFromFragment(element.props.children, returnFiber.mode, expirationTime, element.key);
+        created.return = returnFiber;
+        return created;
+      } else {
+        var _created4 = createFiberFromElement(element, returnFiber.mode, expirationTime);
+
+        _created4.ref = coerceRef(returnFiber, currentFirstChild, element);
+        _created4.return = returnFiber;
+        return _created4;
+      }
+    }
+
+    function reconcileSinglePortal(returnFiber, currentFirstChild, portal, expirationTime) {
+      var key = portal.key;
+      var child = currentFirstChild;
+
+      while (child !== null) {
+        // TODO: If key === null and child.key === null, then this only applies to
+        // the first item in the list.
+        if (child.key === key) {
+          if (child.tag === HostPortal && child.stateNode.containerInfo === portal.containerInfo && child.stateNode.implementation === portal.implementation) {
+            deleteRemainingChildren(returnFiber, child.sibling);
+            var existing = useFiber(child, portal.children || []);
+            existing.return = returnFiber;
+            return existing;
+          } else {
+            deleteRemainingChildren(returnFiber, child);
+            break;
+          }
+        } else {
+          deleteChild(returnFiber, child);
+        }
+
+        child = child.sibling;
+      }
+
+      var created = createFiberFromPortal(portal, returnFiber.mode, expirationTime);
+      created.return = returnFiber;
+      return created;
+    } // This API will tag the children with the side-effect of the reconciliation
+    // itself. They will be added to the side-effect list as we pass through the
+    // children and the parent.
+
+
+    function reconcileChildFibers(returnFiber, currentFirstChild, newChild, expirationTime) {
+      // This function is not recursive.
+      // If the top level item is an array, we treat it as a set of children,
+      // not as a fragment. Nested arrays on the other hand will be treated as
+      // fragment nodes. Recursion happens at the normal flow.
+      // Handle top level unkeyed fragments as if they were arrays.
+      // This leads to an ambiguity between <>{[...]}</> and <>...</>.
+      // We treat the ambiguous cases above the same.
+      var isUnkeyedTopLevelFragment = typeof newChild === 'object' && newChild !== null && newChild.type === REACT_FRAGMENT_TYPE && newChild.key === null;
+
+      if (isUnkeyedTopLevelFragment) {
+        newChild = newChild.props.children;
+      } // Handle object types
+
+
+      var isObject = typeof newChild === 'object' && newChild !== null;
+
+      if (isObject) {
+        switch (newChild.$$typeof) {
+          case REACT_ELEMENT_TYPE:
+            return placeSingleChild(reconcileSingleElement(returnFiber, currentFirstChild, newChild, expirationTime));
+
+          case REACT_PORTAL_TYPE:
+            return placeSingleChild(reconcileSinglePortal(returnFiber, currentFirstChild, newChild, expirationTime));
+        }
+      }
+
+      if (typeof newChild === 'string' || typeof newChild === 'number') {
+        return placeSingleChild(reconcileSingleTextNode(returnFiber, currentFirstChild, '' + newChild, expirationTime));
+      }
+
+      if (isArray$1(newChild)) {
+        return reconcileChildrenArray(returnFiber, currentFirstChild, newChild, expirationTime);
+      }
+
+      if (getIteratorFn(newChild)) {
+        return reconcileChildrenIterator(returnFiber, currentFirstChild, newChild, expirationTime);
+      }
+
+      if (isObject) {
+        throwOnInvalidObjectType(returnFiber, newChild);
+      }
+
+      {
+        if (typeof newChild === 'function') {
+          warnOnFunctionType();
+        }
+      }
+
+      if (typeof newChild === 'undefined' && !isUnkeyedTopLevelFragment) {
+        // If the new child is undefined, and the return fiber is a composite
+        // component, throw an error. If Fiber return types are disabled,
+        // we already threw above.
+        switch (returnFiber.tag) {
+          case ClassComponent:
+            {
+              {
+                var instance = returnFiber.stateNode;
+
+                if (instance.render._isMockFunction) {
+                  // We allow auto-mocks to proceed as if they're returning null.
+                  break;
+                }
+              }
+            }
+          // Intentionally fall through to the next case, which handles both
+          // functions and classes
+          // eslint-disable-next-lined no-fallthrough
+
+          case FunctionComponent:
+            {
+              var Component = returnFiber.type;
+
+              {
+                {
+                  throw Error( (Component.displayName || Component.name || 'Component') + "(...): Nothing was returned from render. This usually means a return statement is missing. Or, to render nothing, return null." );
+                }
+              }
+            }
+        }
+      } // Remaining cases are all treated as empty.
+
+
+      return deleteRemainingChildren(returnFiber, currentFirstChild);
+    }
+
+    return reconcileChildFibers;
+  }
+
+  var reconcileChildFibers = ChildReconciler(true);
+  var mountChildFibers = ChildReconciler(false);
+  function cloneChildFibers(current, workInProgress) {
+    if (!(current === null || workInProgress.child === current.child)) {
+      {
+        throw Error( "Resuming work not yet implemented." );
+      }
+    }
+
+    if (workInProgress.child === null) {
+      return;
+    }
+
+    var currentChild = workInProgress.child;
+    var newChild = createWorkInProgress(currentChild, currentChild.pendingProps);
+    workInProgress.child = newChild;
+    newChild.return = workInProgress;
+
+    while (currentChild.sibling !== null) {
+      currentChild = currentChild.sibling;
+      newChild = newChild.sibling = createWorkInProgress(currentChild, currentChild.pendingProps);
+      newChild.return = workInProgress;
+    }
+
+    newChild.sibling = null;
+  } // Reset a workInProgress child set to prepare it for a second pass.
+
+  function resetChildFibers(workInProgress, renderExpirationTime) {
+    var child = workInProgress.child;
+
+    while (child !== null) {
+      resetWorkInProgress(child, renderExpirationTime);
+      child = child.sibling;
+    }
+  }
+
+  var NO_CONTEXT = {};
+  var contextStackCursor$1 = createCursor(NO_CONTEXT);
+  var contextFiberStackCursor = createCursor(NO_CONTEXT);
+  var rootInstanceStackCursor = createCursor(NO_CONTEXT);
+
+  function requiredContext(c) {
+    if (!(c !== NO_CONTEXT)) {
+      {
+        throw Error( "Expected host context to exist. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+
+    return c;
+  }
+
+  function getRootHostContainer() {
+    var rootInstance = requiredContext(rootInstanceStackCursor.current);
+    return rootInstance;
+  }
+
+  function pushHostContainer(fiber, nextRootInstance) {
+    // Push current root instance onto the stack;
+    // This allows us to reset root when portals are popped.
+    push(rootInstanceStackCursor, nextRootInstance, fiber); // Track the context and the Fiber that provided it.
+    // This enables us to pop only Fibers that provide unique contexts.
+
+    push(contextFiberStackCursor, fiber, fiber); // Finally, we need to push the host context to the stack.
+    // However, we can't just call getRootHostContext() and push it because
+    // we'd have a different number of entries on the stack depending on
+    // whether getRootHostContext() throws somewhere in renderer code or not.
+    // So we push an empty value first. This lets us safely unwind on errors.
+
+    push(contextStackCursor$1, NO_CONTEXT, fiber);
+    var nextRootContext = getRootHostContext(nextRootInstance); // Now that we know this function doesn't throw, replace it.
+
+    pop(contextStackCursor$1, fiber);
+    push(contextStackCursor$1, nextRootContext, fiber);
+  }
+
+  function popHostContainer(fiber) {
+    pop(contextStackCursor$1, fiber);
+    pop(contextFiberStackCursor, fiber);
+    pop(rootInstanceStackCursor, fiber);
+  }
+
+  function getHostContext() {
+    var context = requiredContext(contextStackCursor$1.current);
+    return context;
+  }
+
+  function pushHostContext(fiber) {
+    var rootInstance = requiredContext(rootInstanceStackCursor.current);
+    var context = requiredContext(contextStackCursor$1.current);
+    var nextContext = getChildHostContext(context, fiber.type); // Don't push this Fiber's context unless it's unique.
+
+    if (context === nextContext) {
+      return;
+    } // Track the context and the Fiber that provided it.
+    // This enables us to pop only Fibers that provide unique contexts.
+
+
+    push(contextFiberStackCursor, fiber, fiber);
+    push(contextStackCursor$1, nextContext, fiber);
+  }
+
+  function popHostContext(fiber) {
+    // Do not pop unless this Fiber provided the current context.
+    // pushHostContext() only pushes Fibers that provide unique contexts.
+    if (contextFiberStackCursor.current !== fiber) {
+      return;
+    }
+
+    pop(contextStackCursor$1, fiber);
+    pop(contextFiberStackCursor, fiber);
+  }
+
+  var DefaultSuspenseContext = 0; // The Suspense Context is split into two parts. The lower bits is
+  // inherited deeply down the subtree. The upper bits only affect
+  // this immediate suspense boundary and gets reset each new
+  // boundary or suspense list.
+
+  var SubtreeSuspenseContextMask = 1; // Subtree Flags:
+  // InvisibleParentSuspenseContext indicates that one of our parent Suspense
+  // boundaries is not currently showing visible main content.
+  // Either because it is already showing a fallback or is not mounted at all.
+  // We can use this to determine if it is desirable to trigger a fallback at
+  // the parent. If not, then we might need to trigger undesirable boundaries
+  // and/or suspend the commit to avoid hiding the parent content.
+
+  var InvisibleParentSuspenseContext = 1; // Shallow Flags:
+  // ForceSuspenseFallback can be used by SuspenseList to force newly added
+  // items into their fallback state during one of the render passes.
+
+  var ForceSuspenseFallback = 2;
+  var suspenseStackCursor = createCursor(DefaultSuspenseContext);
+  function hasSuspenseContext(parentContext, flag) {
+    return (parentContext & flag) !== 0;
+  }
+  function setDefaultShallowSuspenseContext(parentContext) {
+    return parentContext & SubtreeSuspenseContextMask;
+  }
+  function setShallowSuspenseContext(parentContext, shallowContext) {
+    return parentContext & SubtreeSuspenseContextMask | shallowContext;
+  }
+  function addSubtreeSuspenseContext(parentContext, subtreeContext) {
+    return parentContext | subtreeContext;
+  }
+  function pushSuspenseContext(fiber, newContext) {
+    push(suspenseStackCursor, newContext, fiber);
+  }
+  function popSuspenseContext(fiber) {
+    pop(suspenseStackCursor, fiber);
+  }
+
+  function shouldCaptureSuspense(workInProgress, hasInvisibleParent) {
+    // If it was the primary children that just suspended, capture and render the
+    // fallback. Otherwise, don't capture and bubble to the next boundary.
+    var nextState = workInProgress.memoizedState;
+
+    if (nextState !== null) {
+      if (nextState.dehydrated !== null) {
+        // A dehydrated boundary always captures.
+        return true;
+      }
+
+      return false;
+    }
+
+    var props = workInProgress.memoizedProps; // In order to capture, the Suspense component must have a fallback prop.
+
+    if (props.fallback === undefined) {
+      return false;
+    } // Regular boundaries always capture.
+
+
+    if (props.unstable_avoidThisFallback !== true) {
+      return true;
+    } // If it's a boundary we should avoid, then we prefer to bubble up to the
+    // parent boundary if it is currently invisible.
+
+
+    if (hasInvisibleParent) {
+      return false;
+    } // If the parent is not able to handle it, we must handle it.
+
+
+    return true;
+  }
+  function findFirstSuspended(row) {
+    var node = row;
+
+    while (node !== null) {
+      if (node.tag === SuspenseComponent) {
+        var state = node.memoizedState;
+
+        if (state !== null) {
+          var dehydrated = state.dehydrated;
+
+          if (dehydrated === null || isSuspenseInstancePending(dehydrated) || isSuspenseInstanceFallback(dehydrated)) {
+            return node;
+          }
+        }
+      } else if (node.tag === SuspenseListComponent && // revealOrder undefined can't be trusted because it don't
+      // keep track of whether it suspended or not.
+      node.memoizedProps.revealOrder !== undefined) {
+        var didSuspend = (node.effectTag & DidCapture) !== NoEffect;
+
+        if (didSuspend) {
+          return node;
+        }
+      } else if (node.child !== null) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+
+      if (node === row) {
+        return null;
+      }
+
+      while (node.sibling === null) {
+        if (node.return === null || node.return === row) {
+          return null;
+        }
+
+        node = node.return;
+      }
+
+      node.sibling.return = node.return;
+      node = node.sibling;
+    }
+
+    return null;
+  }
+
+  function createDeprecatedResponderListener(responder, props) {
+    var eventResponderListener = {
+      responder: responder,
+      props: props
+    };
+
+    {
+      Object.freeze(eventResponderListener);
+    }
+
+    return eventResponderListener;
+  }
+
+  var HasEffect =
+  /* */
+  1; // Represents the phase in which the effect (not the clean-up) fires.
+
+  var Layout =
+  /*    */
+  2;
+  var Passive$1 =
+  /*   */
+  4;
+
+  var ReactCurrentDispatcher = ReactSharedInternals.ReactCurrentDispatcher,
+      ReactCurrentBatchConfig$1 = ReactSharedInternals.ReactCurrentBatchConfig;
+  var didWarnAboutMismatchedHooksForComponent;
+
+  {
+    didWarnAboutMismatchedHooksForComponent = new Set();
+  }
+
+  // These are set right before calling the component.
+  var renderExpirationTime = NoWork; // The work-in-progress fiber. I've named it differently to distinguish it from
+  // the work-in-progress hook.
+
+  var currentlyRenderingFiber$1 = null; // Hooks are stored as a linked list on the fiber's memoizedState field. The
+  // current hook list is the list that belongs to the current fiber. The
+  // work-in-progress hook list is a new list that will be added to the
+  // work-in-progress fiber.
+
+  var currentHook = null;
+  var workInProgressHook = null; // Whether an update was scheduled at any point during the render phase. This
+  // does not get reset if we do another render pass; only when we're completely
+  // finished evaluating this component. This is an optimization so we know
+  // whether we need to clear render phase updates after a throw.
+
+  var didScheduleRenderPhaseUpdate = false;
+  var RE_RENDER_LIMIT = 25; // In DEV, this is the name of the currently executing primitive hook
+
+  var currentHookNameInDev = null; // In DEV, this list ensures that hooks are called in the same order between renders.
+  // The list stores the order of hooks used during the initial render (mount).
+  // Subsequent renders (updates) reference this list.
+
+  var hookTypesDev = null;
+  var hookTypesUpdateIndexDev = -1; // In DEV, this tracks whether currently rendering component needs to ignore
+  // the dependencies for Hooks that need them (e.g. useEffect or useMemo).
+  // When true, such Hooks will always be "remounted". Only used during hot reload.
+
+  var ignorePreviousDependencies = false;
+
+  function mountHookTypesDev() {
+    {
+      var hookName = currentHookNameInDev;
+
+      if (hookTypesDev === null) {
+        hookTypesDev = [hookName];
+      } else {
+        hookTypesDev.push(hookName);
+      }
+    }
+  }
+
+  function updateHookTypesDev() {
+    {
+      var hookName = currentHookNameInDev;
+
+      if (hookTypesDev !== null) {
+        hookTypesUpdateIndexDev++;
+
+        if (hookTypesDev[hookTypesUpdateIndexDev] !== hookName) {
+          warnOnHookMismatchInDev(hookName);
+        }
+      }
+    }
+  }
+
+  function checkDepsAreArrayDev(deps) {
+    {
+      if (deps !== undefined && deps !== null && !Array.isArray(deps)) {
+        // Verify deps, but only on mount to avoid extra checks.
+        // It's unlikely their type would change as usually you define them inline.
+        error('%s received a final argument that is not an array (instead, received `%s`). When ' + 'specified, the final argument must be an array.', currentHookNameInDev, typeof deps);
+      }
+    }
+  }
+
+  function warnOnHookMismatchInDev(currentHookName) {
+    {
+      var componentName = getComponentName(currentlyRenderingFiber$1.type);
+
+      if (!didWarnAboutMismatchedHooksForComponent.has(componentName)) {
+        didWarnAboutMismatchedHooksForComponent.add(componentName);
+
+        if (hookTypesDev !== null) {
+          var table = '';
+          var secondColumnStart = 30;
+
+          for (var i = 0; i <= hookTypesUpdateIndexDev; i++) {
+            var oldHookName = hookTypesDev[i];
+            var newHookName = i === hookTypesUpdateIndexDev ? currentHookName : oldHookName;
+            var row = i + 1 + ". " + oldHookName; // Extra space so second column lines up
+            // lol @ IE not supporting String#repeat
+
+            while (row.length < secondColumnStart) {
+              row += ' ';
+            }
+
+            row += newHookName + '\n';
+            table += row;
+          }
+
+          error('React has detected a change in the order of Hooks called by %s. ' + 'This will lead to bugs and errors if not fixed. ' + 'For more information, read the Rules of Hooks: https://fb.me/rules-of-hooks\n\n' + '   Previous render            Next render\n' + '   ------------------------------------------------------\n' + '%s' + '   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^\n', componentName, table);
+        }
+      }
+    }
+  }
+
+  function throwInvalidHookError() {
+    {
+      {
+        throw Error( "Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons:\n1. You might have mismatching versions of React and the renderer (such as React DOM)\n2. You might be breaking the Rules of Hooks\n3. You might have more than one copy of React in the same app\nSee https://fb.me/react-invalid-hook-call for tips about how to debug and fix this problem." );
+      }
+    }
+  }
+
+  function areHookInputsEqual(nextDeps, prevDeps) {
+    {
+      if (ignorePreviousDependencies) {
+        // Only true when this component is being hot reloaded.
+        return false;
+      }
+    }
+
+    if (prevDeps === null) {
+      {
+        error('%s received a final argument during this render, but not during ' + 'the previous render. Even though the final argument is optional, ' + 'its type cannot change between renders.', currentHookNameInDev);
+      }
+
+      return false;
+    }
+
+    {
+      // Don't bother comparing lengths in prod because these arrays should be
+      // passed inline.
+      if (nextDeps.length !== prevDeps.length) {
+        error('The final argument passed to %s changed size between renders. The ' + 'order and size of this array must remain constant.\n\n' + 'Previous: %s\n' + 'Incoming: %s', currentHookNameInDev, "[" + prevDeps.join(', ') + "]", "[" + nextDeps.join(', ') + "]");
+      }
+    }
+
+    for (var i = 0; i < prevDeps.length && i < nextDeps.length; i++) {
+      if (objectIs(nextDeps[i], prevDeps[i])) {
+        continue;
+      }
+
+      return false;
+    }
+
+    return true;
+  }
+
+  function renderWithHooks(current, workInProgress, Component, props, secondArg, nextRenderExpirationTime) {
+    renderExpirationTime = nextRenderExpirationTime;
+    currentlyRenderingFiber$1 = workInProgress;
+
+    {
+      hookTypesDev = current !== null ? current._debugHookTypes : null;
+      hookTypesUpdateIndexDev = -1; // Used for hot reloading:
+
+      ignorePreviousDependencies = current !== null && current.type !== workInProgress.type;
+    }
+
+    workInProgress.memoizedState = null;
+    workInProgress.updateQueue = null;
+    workInProgress.expirationTime = NoWork; // The following should have already been reset
+    // currentHook = null;
+    // workInProgressHook = null;
+    // didScheduleRenderPhaseUpdate = false;
+    // TODO Warn if no hooks are used at all during mount, then some are used during update.
+    // Currently we will identify the update render as a mount because memoizedState === null.
+    // This is tricky because it's valid for certain types of components (e.g. React.lazy)
+    // Using memoizedState to differentiate between mount/update only works if at least one stateful hook is used.
+    // Non-stateful hooks (e.g. context) don't get added to memoizedState,
+    // so memoizedState would be null during updates and mounts.
+
+    {
+      if (current !== null && current.memoizedState !== null) {
+        ReactCurrentDispatcher.current = HooksDispatcherOnUpdateInDEV;
+      } else if (hookTypesDev !== null) {
+        // This dispatcher handles an edge case where a component is updating,
+        // but no stateful hooks have been used.
+        // We want to match the production code behavior (which will use HooksDispatcherOnMount),
+        // but with the extra DEV validation to ensure hooks ordering hasn't changed.
+        // This dispatcher does that.
+        ReactCurrentDispatcher.current = HooksDispatcherOnMountWithHookTypesInDEV;
+      } else {
+        ReactCurrentDispatcher.current = HooksDispatcherOnMountInDEV;
+      }
+    }
+
+    var children = Component(props, secondArg); // Check if there was a render phase update
+
+    if (workInProgress.expirationTime === renderExpirationTime) {
+      // Keep rendering in a loop for as long as render phase updates continue to
+      // be scheduled. Use a counter to prevent infinite loops.
+      var numberOfReRenders = 0;
+
+      do {
+        workInProgress.expirationTime = NoWork;
+
+        if (!(numberOfReRenders < RE_RENDER_LIMIT)) {
+          {
+            throw Error( "Too many re-renders. React limits the number of renders to prevent an infinite loop." );
+          }
+        }
+
+        numberOfReRenders += 1;
+
+        {
+          // Even when hot reloading, allow dependencies to stabilize
+          // after first render to prevent infinite render phase updates.
+          ignorePreviousDependencies = false;
+        } // Start over from the beginning of the list
+
+
+        currentHook = null;
+        workInProgressHook = null;
+        workInProgress.updateQueue = null;
+
+        {
+          // Also validate hook order for cascading updates.
+          hookTypesUpdateIndexDev = -1;
+        }
+
+        ReactCurrentDispatcher.current =  HooksDispatcherOnRerenderInDEV ;
+        children = Component(props, secondArg);
+      } while (workInProgress.expirationTime === renderExpirationTime);
+    } // We can assume the previous dispatcher is always this one, since we set it
+    // at the beginning of the render phase and there's no re-entrancy.
+
+
+    ReactCurrentDispatcher.current = ContextOnlyDispatcher;
+
+    {
+      workInProgress._debugHookTypes = hookTypesDev;
+    } // This check uses currentHook so that it works the same in DEV and prod bundles.
+    // hookTypesDev could catch more cases (e.g. context) but only in DEV bundles.
+
+
+    var didRenderTooFewHooks = currentHook !== null && currentHook.next !== null;
+    renderExpirationTime = NoWork;
+    currentlyRenderingFiber$1 = null;
+    currentHook = null;
+    workInProgressHook = null;
+
+    {
+      currentHookNameInDev = null;
+      hookTypesDev = null;
+      hookTypesUpdateIndexDev = -1;
+    }
+
+    didScheduleRenderPhaseUpdate = false;
+
+    if (!!didRenderTooFewHooks) {
+      {
+        throw Error( "Rendered fewer hooks than expected. This may be caused by an accidental early return statement." );
+      }
+    }
+
+    return children;
+  }
+  function bailoutHooks(current, workInProgress, expirationTime) {
+    workInProgress.updateQueue = current.updateQueue;
+    workInProgress.effectTag &= ~(Passive | Update);
+
+    if (current.expirationTime <= expirationTime) {
+      current.expirationTime = NoWork;
+    }
+  }
+  function resetHooksAfterThrow() {
+    // We can assume the previous dispatcher is always this one, since we set it
+    // at the beginning of the render phase and there's no re-entrancy.
+    ReactCurrentDispatcher.current = ContextOnlyDispatcher;
+
+    if (didScheduleRenderPhaseUpdate) {
+      // There were render phase updates. These are only valid for this render
+      // phase, which we are now aborting. Remove the updates from the queues so
+      // they do not persist to the next render. Do not remove updates from hooks
+      // that weren't processed.
+      //
+      // Only reset the updates from the queue if it has a clone. If it does
+      // not have a clone, that means it wasn't processed, and the updates were
+      // scheduled before we entered the render phase.
+      var hook = currentlyRenderingFiber$1.memoizedState;
+
+      while (hook !== null) {
+        var queue = hook.queue;
+
+        if (queue !== null) {
+          queue.pending = null;
+        }
+
+        hook = hook.next;
+      }
+    }
+
+    renderExpirationTime = NoWork;
+    currentlyRenderingFiber$1 = null;
+    currentHook = null;
+    workInProgressHook = null;
+
+    {
+      hookTypesDev = null;
+      hookTypesUpdateIndexDev = -1;
+      currentHookNameInDev = null;
+    }
+
+    didScheduleRenderPhaseUpdate = false;
+  }
+
+  function mountWorkInProgressHook() {
+    var hook = {
+      memoizedState: null,
+      baseState: null,
+      baseQueue: null,
+      queue: null,
+      next: null
+    };
+
+    if (workInProgressHook === null) {
+      // This is the first hook in the list
+      currentlyRenderingFiber$1.memoizedState = workInProgressHook = hook;
+    } else {
+      // Append to the end of the list
+      workInProgressHook = workInProgressHook.next = hook;
+    }
+
+    return workInProgressHook;
+  }
+
+  function updateWorkInProgressHook() {
+    // This function is used both for updates and for re-renders triggered by a
+    // render phase update. It assumes there is either a current hook we can
+    // clone, or a work-in-progress hook from a previous render pass that we can
+    // use as a base. When we reach the end of the base list, we must switch to
+    // the dispatcher used for mounts.
+    var nextCurrentHook;
+
+    if (currentHook === null) {
+      var current = currentlyRenderingFiber$1.alternate;
+
+      if (current !== null) {
+        nextCurrentHook = current.memoizedState;
+      } else {
+        nextCurrentHook = null;
+      }
+    } else {
+      nextCurrentHook = currentHook.next;
+    }
+
+    var nextWorkInProgressHook;
+
+    if (workInProgressHook === null) {
+      nextWorkInProgressHook = currentlyRenderingFiber$1.memoizedState;
+    } else {
+      nextWorkInProgressHook = workInProgressHook.next;
+    }
+
+    if (nextWorkInProgressHook !== null) {
+      // There's already a work-in-progress. Reuse it.
+      workInProgressHook = nextWorkInProgressHook;
+      nextWorkInProgressHook = workInProgressHook.next;
+      currentHook = nextCurrentHook;
+    } else {
+      // Clone from the current hook.
+      if (!(nextCurrentHook !== null)) {
+        {
+          throw Error( "Rendered more hooks than during the previous render." );
+        }
+      }
+
+      currentHook = nextCurrentHook;
+      var newHook = {
+        memoizedState: currentHook.memoizedState,
+        baseState: currentHook.baseState,
+        baseQueue: currentHook.baseQueue,
+        queue: currentHook.queue,
+        next: null
+      };
+
+      if (workInProgressHook === null) {
+        // This is the first hook in the list.
+        currentlyRenderingFiber$1.memoizedState = workInProgressHook = newHook;
+      } else {
+        // Append to the end of the list.
+        workInProgressHook = workInProgressHook.next = newHook;
+      }
+    }
+
+    return workInProgressHook;
+  }
+
+  function createFunctionComponentUpdateQueue() {
+    return {
+      lastEffect: null
+    };
+  }
+
+  function basicStateReducer(state, action) {
+    // $FlowFixMe: Flow doesn't like mixed types
+    return typeof action === 'function' ? action(state) : action;
+  }
+
+  function mountReducer(reducer, initialArg, init) {
+    var hook = mountWorkInProgressHook();
+    var initialState;
+
+    if (init !== undefined) {
+      initialState = init(initialArg);
+    } else {
+      initialState = initialArg;
+    }
+
+    hook.memoizedState = hook.baseState = initialState;
+    var queue = hook.queue = {
+      pending: null,
+      dispatch: null,
+      lastRenderedReducer: reducer,
+      lastRenderedState: initialState
+    };
+    var dispatch = queue.dispatch = dispatchAction.bind(null, currentlyRenderingFiber$1, queue);
+    return [hook.memoizedState, dispatch];
+  }
+
+  function updateReducer(reducer, initialArg, init) {
+    var hook = updateWorkInProgressHook();
+    var queue = hook.queue;
+
+    if (!(queue !== null)) {
+      {
+        throw Error( "Should have a queue. This is likely a bug in React. Please file an issue." );
+      }
+    }
+
+    queue.lastRenderedReducer = reducer;
+    var current = currentHook; // The last rebase update that is NOT part of the base state.
+
+    var baseQueue = current.baseQueue; // The last pending update that hasn't been processed yet.
+
+    var pendingQueue = queue.pending;
+
+    if (pendingQueue !== null) {
+      // We have new updates that haven't been processed yet.
+      // We'll add them to the base queue.
+      if (baseQueue !== null) {
+        // Merge the pending queue and the base queue.
+        var baseFirst = baseQueue.next;
+        var pendingFirst = pendingQueue.next;
+        baseQueue.next = pendingFirst;
+        pendingQueue.next = baseFirst;
+      }
+
+      current.baseQueue = baseQueue = pendingQueue;
+      queue.pending = null;
+    }
+
+    if (baseQueue !== null) {
+      // We have a queue to process.
+      var first = baseQueue.next;
+      var newState = current.baseState;
+      var newBaseState = null;
+      var newBaseQueueFirst = null;
+      var newBaseQueueLast = null;
+      var update = first;
+
+      do {
+        var updateExpirationTime = update.expirationTime;
+
+        if (updateExpirationTime < renderExpirationTime) {
+          // Priority is insufficient. Skip this update. If this is the first
+          // skipped update, the previous update/state is the new base
+          // update/state.
+          var clone = {
+            expirationTime: update.expirationTime,
+            suspenseConfig: update.suspenseConfig,
+            action: update.action,
+            eagerReducer: update.eagerReducer,
+            eagerState: update.eagerState,
+            next: null
+          };
+
+          if (newBaseQueueLast === null) {
+            newBaseQueueFirst = newBaseQueueLast = clone;
+            newBaseState = newState;
+          } else {
+            newBaseQueueLast = newBaseQueueLast.next = clone;
+          } // Update the remaining priority in the queue.
+
+
+          if (updateExpirationTime > currentlyRenderingFiber$1.expirationTime) {
+            currentlyRenderingFiber$1.expirationTime = updateExpirationTime;
+            markUnprocessedUpdateTime(updateExpirationTime);
+          }
+        } else {
+          // This update does have sufficient priority.
+          if (newBaseQueueLast !== null) {
+            var _clone = {
+              expirationTime: Sync,
+              // This update is going to be committed so we never want uncommit it.
+              suspenseConfig: update.suspenseConfig,
+              action: update.action,
+              eagerReducer: update.eagerReducer,
+              eagerState: update.eagerState,
+              next: null
+            };
+            newBaseQueueLast = newBaseQueueLast.next = _clone;
+          } // Mark the event time of this update as relevant to this render pass.
+          // TODO: This should ideally use the true event time of this update rather than
+          // its priority which is a derived and not reverseable value.
+          // TODO: We should skip this update if it was already committed but currently
+          // we have no way of detecting the difference between a committed and suspended
+          // update here.
+
+
+          markRenderEventTimeAndConfig(updateExpirationTime, update.suspenseConfig); // Process this update.
+
+          if (update.eagerReducer === reducer) {
+            // If this update was processed eagerly, and its reducer matches the
+            // current reducer, we can use the eagerly computed state.
+            newState = update.eagerState;
+          } else {
+            var action = update.action;
+            newState = reducer(newState, action);
+          }
+        }
+
+        update = update.next;
+      } while (update !== null && update !== first);
+
+      if (newBaseQueueLast === null) {
+        newBaseState = newState;
+      } else {
+        newBaseQueueLast.next = newBaseQueueFirst;
+      } // Mark that the fiber performed work, but only if the new state is
+      // different from the current state.
+
+
+      if (!objectIs(newState, hook.memoizedState)) {
+        markWorkInProgressReceivedUpdate();
+      }
+
+      hook.memoizedState = newState;
+      hook.baseState = newBaseState;
+      hook.baseQueue = newBaseQueueLast;
+      queue.lastRenderedState = newState;
+    }
+
+    var dispatch = queue.dispatch;
+    return [hook.memoizedState, dispatch];
+  }
+
+  function rerenderReducer(reducer, initialArg, init) {
+    var hook = updateWorkInProgressHook();
+    var queue = hook.queue;
+
+    if (!(queue !== null)) {
+      {
+        throw Error( "Should have a queue. This is likely a bug in React. Please file an issue." );
+      }
+    }
+
+    queue.lastRenderedReducer = reducer; // This is a re-render. Apply the new render phase updates to the previous
+    // work-in-progress hook.
+
+    var dispatch = queue.dispatch;
+    var lastRenderPhaseUpdate = queue.pending;
+    var newState = hook.memoizedState;
+
+    if (lastRenderPhaseUpdate !== null) {
+      // The queue doesn't persist past this render pass.
+      queue.pending = null;
+      var firstRenderPhaseUpdate = lastRenderPhaseUpdate.next;
+      var update = firstRenderPhaseUpdate;
+
+      do {
+        // Process this render phase update. We don't have to check the
+        // priority because it will always be the same as the current
+        // render's.
+        var action = update.action;
+        newState = reducer(newState, action);
+        update = update.next;
+      } while (update !== firstRenderPhaseUpdate); // Mark that the fiber performed work, but only if the new state is
+      // different from the current state.
+
+
+      if (!objectIs(newState, hook.memoizedState)) {
+        markWorkInProgressReceivedUpdate();
+      }
+
+      hook.memoizedState = newState; // Don't persist the state accumulated from the render phase updates to
+      // the base state unless the queue is empty.
+      // TODO: Not sure if this is the desired semantics, but it's what we
+      // do for gDSFP. I can't remember why.
+
+      if (hook.baseQueue === null) {
+        hook.baseState = newState;
+      }
+
+      queue.lastRenderedState = newState;
+    }
+
+    return [newState, dispatch];
+  }
+
+  function mountState(initialState) {
+    var hook = mountWorkInProgressHook();
+
+    if (typeof initialState === 'function') {
+      // $FlowFixMe: Flow doesn't like mixed types
+      initialState = initialState();
+    }
+
+    hook.memoizedState = hook.baseState = initialState;
+    var queue = hook.queue = {
+      pending: null,
+      dispatch: null,
+      lastRenderedReducer: basicStateReducer,
+      lastRenderedState: initialState
+    };
+    var dispatch = queue.dispatch = dispatchAction.bind(null, currentlyRenderingFiber$1, queue);
+    return [hook.memoizedState, dispatch];
+  }
+
+  function updateState(initialState) {
+    return updateReducer(basicStateReducer);
+  }
+
+  function rerenderState(initialState) {
+    return rerenderReducer(basicStateReducer);
+  }
+
+  function pushEffect(tag, create, destroy, deps) {
+    var effect = {
+      tag: tag,
+      create: create,
+      destroy: destroy,
+      deps: deps,
+      // Circular
+      next: null
+    };
+    var componentUpdateQueue = currentlyRenderingFiber$1.updateQueue;
+
+    if (componentUpdateQueue === null) {
+      componentUpdateQueue = createFunctionComponentUpdateQueue();
+      currentlyRenderingFiber$1.updateQueue = componentUpdateQueue;
+      componentUpdateQueue.lastEffect = effect.next = effect;
+    } else {
+      var lastEffect = componentUpdateQueue.lastEffect;
+
+      if (lastEffect === null) {
+        componentUpdateQueue.lastEffect = effect.next = effect;
+      } else {
+        var firstEffect = lastEffect.next;
+        lastEffect.next = effect;
+        effect.next = firstEffect;
+        componentUpdateQueue.lastEffect = effect;
+      }
+    }
+
+    return effect;
+  }
+
+  function mountRef(initialValue) {
+    var hook = mountWorkInProgressHook();
+    var ref = {
+      current: initialValue
+    };
+
+    {
+      Object.seal(ref);
+    }
+
+    hook.memoizedState = ref;
+    return ref;
+  }
+
+  function updateRef(initialValue) {
+    var hook = updateWorkInProgressHook();
+    return hook.memoizedState;
+  }
+
+  function mountEffectImpl(fiberEffectTag, hookEffectTag, create, deps) {
+    var hook = mountWorkInProgressHook();
+    var nextDeps = deps === undefined ? null : deps;
+    currentlyRenderingFiber$1.effectTag |= fiberEffectTag;
+    hook.memoizedState = pushEffect(HasEffect | hookEffectTag, create, undefined, nextDeps);
+  }
+
+  function updateEffectImpl(fiberEffectTag, hookEffectTag, create, deps) {
+    var hook = updateWorkInProgressHook();
+    var nextDeps = deps === undefined ? null : deps;
+    var destroy = undefined;
+
+    if (currentHook !== null) {
+      var prevEffect = currentHook.memoizedState;
+      destroy = prevEffect.destroy;
+
+      if (nextDeps !== null) {
+        var prevDeps = prevEffect.deps;
+
+        if (areHookInputsEqual(nextDeps, prevDeps)) {
+          pushEffect(hookEffectTag, create, destroy, nextDeps);
+          return;
+        }
+      }
+    }
+
+    currentlyRenderingFiber$1.effectTag |= fiberEffectTag;
+    hook.memoizedState = pushEffect(HasEffect | hookEffectTag, create, destroy, nextDeps);
+  }
+
+  function mountEffect(create, deps) {
+    {
+      // $FlowExpectedError - jest isn't a global, and isn't recognized outside of tests
+      if ('undefined' !== typeof jest) {
+        warnIfNotCurrentlyActingEffectsInDEV(currentlyRenderingFiber$1);
+      }
+    }
+
+    return mountEffectImpl(Update | Passive, Passive$1, create, deps);
+  }
+
+  function updateEffect(create, deps) {
+    {
+      // $FlowExpectedError - jest isn't a global, and isn't recognized outside of tests
+      if ('undefined' !== typeof jest) {
+        warnIfNotCurrentlyActingEffectsInDEV(currentlyRenderingFiber$1);
+      }
+    }
+
+    return updateEffectImpl(Update | Passive, Passive$1, create, deps);
+  }
+
+  function mountLayoutEffect(create, deps) {
+    return mountEffectImpl(Update, Layout, create, deps);
+  }
+
+  function updateLayoutEffect(create, deps) {
+    return updateEffectImpl(Update, Layout, create, deps);
+  }
+
+  function imperativeHandleEffect(create, ref) {
+    if (typeof ref === 'function') {
+      var refCallback = ref;
+
+      var _inst = create();
+
+      refCallback(_inst);
+      return function () {
+        refCallback(null);
+      };
+    } else if (ref !== null && ref !== undefined) {
+      var refObject = ref;
+
+      {
+        if (!refObject.hasOwnProperty('current')) {
+          error('Expected useImperativeHandle() first argument to either be a ' + 'ref callback or React.createRef() object. Instead received: %s.', 'an object with keys {' + Object.keys(refObject).join(', ') + '}');
+        }
+      }
+
+      var _inst2 = create();
+
+      refObject.current = _inst2;
+      return function () {
+        refObject.current = null;
+      };
+    }
+  }
+
+  function mountImperativeHandle(ref, create, deps) {
+    {
+      if (typeof create !== 'function') {
+        error('Expected useImperativeHandle() second argument to be a function ' + 'that creates a handle. Instead received: %s.', create !== null ? typeof create : 'null');
+      }
+    } // TODO: If deps are provided, should we skip comparing the ref itself?
+
+
+    var effectDeps = deps !== null && deps !== undefined ? deps.concat([ref]) : null;
+    return mountEffectImpl(Update, Layout, imperativeHandleEffect.bind(null, create, ref), effectDeps);
+  }
+
+  function updateImperativeHandle(ref, create, deps) {
+    {
+      if (typeof create !== 'function') {
+        error('Expected useImperativeHandle() second argument to be a function ' + 'that creates a handle. Instead received: %s.', create !== null ? typeof create : 'null');
+      }
+    } // TODO: If deps are provided, should we skip comparing the ref itself?
+
+
+    var effectDeps = deps !== null && deps !== undefined ? deps.concat([ref]) : null;
+    return updateEffectImpl(Update, Layout, imperativeHandleEffect.bind(null, create, ref), effectDeps);
+  }
+
+  function mountDebugValue(value, formatterFn) {// This hook is normally a no-op.
+    // The react-debug-hooks package injects its own implementation
+    // so that e.g. DevTools can display custom hook values.
+  }
+
+  var updateDebugValue = mountDebugValue;
+
+  function mountCallback(callback, deps) {
+    var hook = mountWorkInProgressHook();
+    var nextDeps = deps === undefined ? null : deps;
+    hook.memoizedState = [callback, nextDeps];
+    return callback;
+  }
+
+  function updateCallback(callback, deps) {
+    var hook = updateWorkInProgressHook();
+    var nextDeps = deps === undefined ? null : deps;
+    var prevState = hook.memoizedState;
+
+    if (prevState !== null) {
+      if (nextDeps !== null) {
+        var prevDeps = prevState[1];
+
+        if (areHookInputsEqual(nextDeps, prevDeps)) {
+          return prevState[0];
+        }
+      }
+    }
+
+    hook.memoizedState = [callback, nextDeps];
+    return callback;
+  }
+
+  function mountMemo(nextCreate, deps) {
+    var hook = mountWorkInProgressHook();
+    var nextDeps = deps === undefined ? null : deps;
+    var nextValue = nextCreate();
+    hook.memoizedState = [nextValue, nextDeps];
+    return nextValue;
+  }
+
+  function updateMemo(nextCreate, deps) {
+    var hook = updateWorkInProgressHook();
+    var nextDeps = deps === undefined ? null : deps;
+    var prevState = hook.memoizedState;
+
+    if (prevState !== null) {
+      // Assume these are defined. If they're not, areHookInputsEqual will warn.
+      if (nextDeps !== null) {
+        var prevDeps = prevState[1];
+
+        if (areHookInputsEqual(nextDeps, prevDeps)) {
+          return prevState[0];
+        }
+      }
+    }
+
+    var nextValue = nextCreate();
+    hook.memoizedState = [nextValue, nextDeps];
+    return nextValue;
+  }
+
+  function mountDeferredValue(value, config) {
+    var _mountState = mountState(value),
+        prevValue = _mountState[0],
+        setValue = _mountState[1];
+
+    mountEffect(function () {
+      var previousConfig = ReactCurrentBatchConfig$1.suspense;
+      ReactCurrentBatchConfig$1.suspense = config === undefined ? null : config;
+
+      try {
+        setValue(value);
+      } finally {
+        ReactCurrentBatchConfig$1.suspense = previousConfig;
+      }
+    }, [value, config]);
+    return prevValue;
+  }
+
+  function updateDeferredValue(value, config) {
+    var _updateState = updateState(),
+        prevValue = _updateState[0],
+        setValue = _updateState[1];
+
+    updateEffect(function () {
+      var previousConfig = ReactCurrentBatchConfig$1.suspense;
+      ReactCurrentBatchConfig$1.suspense = config === undefined ? null : config;
+
+      try {
+        setValue(value);
+      } finally {
+        ReactCurrentBatchConfig$1.suspense = previousConfig;
+      }
+    }, [value, config]);
+    return prevValue;
+  }
+
+  function rerenderDeferredValue(value, config) {
+    var _rerenderState = rerenderState(),
+        prevValue = _rerenderState[0],
+        setValue = _rerenderState[1];
+
+    updateEffect(function () {
+      var previousConfig = ReactCurrentBatchConfig$1.suspense;
+      ReactCurrentBatchConfig$1.suspense = config === undefined ? null : config;
+
+      try {
+        setValue(value);
+      } finally {
+        ReactCurrentBatchConfig$1.suspense = previousConfig;
+      }
+    }, [value, config]);
+    return prevValue;
+  }
+
+  function startTransition(setPending, config, callback) {
+    var priorityLevel = getCurrentPriorityLevel();
+    runWithPriority$1(priorityLevel < UserBlockingPriority$1 ? UserBlockingPriority$1 : priorityLevel, function () {
+      setPending(true);
+    });
+    runWithPriority$1(priorityLevel > NormalPriority ? NormalPriority : priorityLevel, function () {
+      var previousConfig = ReactCurrentBatchConfig$1.suspense;
+      ReactCurrentBatchConfig$1.suspense = config === undefined ? null : config;
+
+      try {
+        setPending(false);
+        callback();
+      } finally {
+        ReactCurrentBatchConfig$1.suspense = previousConfig;
+      }
+    });
+  }
+
+  function mountTransition(config) {
+    var _mountState2 = mountState(false),
+        isPending = _mountState2[0],
+        setPending = _mountState2[1];
+
+    var start = mountCallback(startTransition.bind(null, setPending, config), [setPending, config]);
+    return [start, isPending];
+  }
+
+  function updateTransition(config) {
+    var _updateState2 = updateState(),
+        isPending = _updateState2[0],
+        setPending = _updateState2[1];
+
+    var start = updateCallback(startTransition.bind(null, setPending, config), [setPending, config]);
+    return [start, isPending];
+  }
+
+  function rerenderTransition(config) {
+    var _rerenderState2 = rerenderState(),
+        isPending = _rerenderState2[0],
+        setPending = _rerenderState2[1];
+
+    var start = updateCallback(startTransition.bind(null, setPending, config), [setPending, config]);
+    return [start, isPending];
+  }
+
+  function dispatchAction(fiber, queue, action) {
+    {
+      if (typeof arguments[3] === 'function') {
+        error("State updates from the useState() and useReducer() Hooks don't support the " + 'second callback argument. To execute a side effect after ' + 'rendering, declare it in the component body with useEffect().');
+      }
+    }
+
+    var currentTime = requestCurrentTimeForUpdate();
+    var suspenseConfig = requestCurrentSuspenseConfig();
+    var expirationTime = computeExpirationForFiber(currentTime, fiber, suspenseConfig);
+    var update = {
+      expirationTime: expirationTime,
+      suspenseConfig: suspenseConfig,
+      action: action,
+      eagerReducer: null,
+      eagerState: null,
+      next: null
+    };
+
+    {
+      update.priority = getCurrentPriorityLevel();
+    } // Append the update to the end of the list.
+
+
+    var pending = queue.pending;
+
+    if (pending === null) {
+      // This is the first update. Create a circular list.
+      update.next = update;
+    } else {
+      update.next = pending.next;
+      pending.next = update;
+    }
+
+    queue.pending = update;
+    var alternate = fiber.alternate;
+
+    if (fiber === currentlyRenderingFiber$1 || alternate !== null && alternate === currentlyRenderingFiber$1) {
+      // This is a render phase update. Stash it in a lazily-created map of
+      // queue -> linked list of updates. After this render pass, we'll restart
+      // and apply the stashed updates on top of the work-in-progress hook.
+      didScheduleRenderPhaseUpdate = true;
+      update.expirationTime = renderExpirationTime;
+      currentlyRenderingFiber$1.expirationTime = renderExpirationTime;
+    } else {
+      if (fiber.expirationTime === NoWork && (alternate === null || alternate.expirationTime === NoWork)) {
+        // The queue is currently empty, which means we can eagerly compute the
+        // next state before entering the render phase. If the new state is the
+        // same as the current state, we may be able to bail out entirely.
+        var lastRenderedReducer = queue.lastRenderedReducer;
+
+        if (lastRenderedReducer !== null) {
+          var prevDispatcher;
+
+          {
+            prevDispatcher = ReactCurrentDispatcher.current;
+            ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+          }
+
+          try {
+            var currentState = queue.lastRenderedState;
+            var eagerState = lastRenderedReducer(currentState, action); // Stash the eagerly computed state, and the reducer used to compute
+            // it, on the update object. If the reducer hasn't changed by the
+            // time we enter the render phase, then the eager state can be used
+            // without calling the reducer again.
+
+            update.eagerReducer = lastRenderedReducer;
+            update.eagerState = eagerState;
+
+            if (objectIs(eagerState, currentState)) {
+              // Fast path. We can bail out without scheduling React to re-render.
+              // It's still possible that we'll need to rebase this update later,
+              // if the component re-renders for a different reason and by that
+              // time the reducer has changed.
+              return;
+            }
+          } catch (error) {// Suppress the error. It will throw again in the render phase.
+          } finally {
+            {
+              ReactCurrentDispatcher.current = prevDispatcher;
+            }
+          }
+        }
+      }
+
+      {
+        // $FlowExpectedError - jest isn't a global, and isn't recognized outside of tests
+        if ('undefined' !== typeof jest) {
+          warnIfNotScopedWithMatchingAct(fiber);
+          warnIfNotCurrentlyActingUpdatesInDev(fiber);
+        }
+      }
+
+      scheduleWork(fiber, expirationTime);
+    }
+  }
+
+  var ContextOnlyDispatcher = {
+    readContext: readContext,
+    useCallback: throwInvalidHookError,
+    useContext: throwInvalidHookError,
+    useEffect: throwInvalidHookError,
+    useImperativeHandle: throwInvalidHookError,
+    useLayoutEffect: throwInvalidHookError,
+    useMemo: throwInvalidHookError,
+    useReducer: throwInvalidHookError,
+    useRef: throwInvalidHookError,
+    useState: throwInvalidHookError,
+    useDebugValue: throwInvalidHookError,
+    useResponder: throwInvalidHookError,
+    useDeferredValue: throwInvalidHookError,
+    useTransition: throwInvalidHookError
+  };
+  var HooksDispatcherOnMountInDEV = null;
+  var HooksDispatcherOnMountWithHookTypesInDEV = null;
+  var HooksDispatcherOnUpdateInDEV = null;
+  var HooksDispatcherOnRerenderInDEV = null;
+  var InvalidNestedHooksDispatcherOnMountInDEV = null;
+  var InvalidNestedHooksDispatcherOnUpdateInDEV = null;
+  var InvalidNestedHooksDispatcherOnRerenderInDEV = null;
+
+  {
+    var warnInvalidContextAccess = function () {
+      error('Context can only be read while React is rendering. ' + 'In classes, you can read it in the render method or getDerivedStateFromProps. ' + 'In function components, you can read it directly in the function body, but not ' + 'inside Hooks like useReducer() or useMemo().');
+    };
+
+    var warnInvalidHookAccess = function () {
+      error('Do not call Hooks inside useEffect(...), useMemo(...), or other built-in Hooks. ' + 'You can only call Hooks at the top level of your React function. ' + 'For more information, see ' + 'https://fb.me/rules-of-hooks');
+    };
+
+    HooksDispatcherOnMountInDEV = {
+      readContext: function (context, observedBits) {
+        return readContext(context, observedBits);
+      },
+      useCallback: function (callback, deps) {
+        currentHookNameInDev = 'useCallback';
+        mountHookTypesDev();
+        checkDepsAreArrayDev(deps);
+        return mountCallback(callback, deps);
+      },
+      useContext: function (context, observedBits) {
+        currentHookNameInDev = 'useContext';
+        mountHookTypesDev();
+        return readContext(context, observedBits);
+      },
+      useEffect: function (create, deps) {
+        currentHookNameInDev = 'useEffect';
+        mountHookTypesDev();
+        checkDepsAreArrayDev(deps);
+        return mountEffect(create, deps);
+      },
+      useImperativeHandle: function (ref, create, deps) {
+        currentHookNameInDev = 'useImperativeHandle';
+        mountHookTypesDev();
+        checkDepsAreArrayDev(deps);
+        return mountImperativeHandle(ref, create, deps);
+      },
+      useLayoutEffect: function (create, deps) {
+        currentHookNameInDev = 'useLayoutEffect';
+        mountHookTypesDev();
+        checkDepsAreArrayDev(deps);
+        return mountLayoutEffect(create, deps);
+      },
+      useMemo: function (create, deps) {
+        currentHookNameInDev = 'useMemo';
+        mountHookTypesDev();
+        checkDepsAreArrayDev(deps);
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+        try {
+          return mountMemo(create, deps);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useReducer: function (reducer, initialArg, init) {
+        currentHookNameInDev = 'useReducer';
+        mountHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+        try {
+          return mountReducer(reducer, initialArg, init);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useRef: function (initialValue) {
+        currentHookNameInDev = 'useRef';
+        mountHookTypesDev();
+        return mountRef(initialValue);
+      },
+      useState: function (initialState) {
+        currentHookNameInDev = 'useState';
+        mountHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+        try {
+          return mountState(initialState);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useDebugValue: function (value, formatterFn) {
+        currentHookNameInDev = 'useDebugValue';
+        mountHookTypesDev();
+        return mountDebugValue();
+      },
+      useResponder: function (responder, props) {
+        currentHookNameInDev = 'useResponder';
+        mountHookTypesDev();
+        return createDeprecatedResponderListener(responder, props);
+      },
+      useDeferredValue: function (value, config) {
+        currentHookNameInDev = 'useDeferredValue';
+        mountHookTypesDev();
+        return mountDeferredValue(value, config);
+      },
+      useTransition: function (config) {
+        currentHookNameInDev = 'useTransition';
+        mountHookTypesDev();
+        return mountTransition(config);
+      }
+    };
+    HooksDispatcherOnMountWithHookTypesInDEV = {
+      readContext: function (context, observedBits) {
+        return readContext(context, observedBits);
+      },
+      useCallback: function (callback, deps) {
+        currentHookNameInDev = 'useCallback';
+        updateHookTypesDev();
+        return mountCallback(callback, deps);
+      },
+      useContext: function (context, observedBits) {
+        currentHookNameInDev = 'useContext';
+        updateHookTypesDev();
+        return readContext(context, observedBits);
+      },
+      useEffect: function (create, deps) {
+        currentHookNameInDev = 'useEffect';
+        updateHookTypesDev();
+        return mountEffect(create, deps);
+      },
+      useImperativeHandle: function (ref, create, deps) {
+        currentHookNameInDev = 'useImperativeHandle';
+        updateHookTypesDev();
+        return mountImperativeHandle(ref, create, deps);
+      },
+      useLayoutEffect: function (create, deps) {
+        currentHookNameInDev = 'useLayoutEffect';
+        updateHookTypesDev();
+        return mountLayoutEffect(create, deps);
+      },
+      useMemo: function (create, deps) {
+        currentHookNameInDev = 'useMemo';
+        updateHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+        try {
+          return mountMemo(create, deps);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useReducer: function (reducer, initialArg, init) {
+        currentHookNameInDev = 'useReducer';
+        updateHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+        try {
+          return mountReducer(reducer, initialArg, init);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useRef: function (initialValue) {
+        currentHookNameInDev = 'useRef';
+        updateHookTypesDev();
+        return mountRef(initialValue);
+      },
+      useState: function (initialState) {
+        currentHookNameInDev = 'useState';
+        updateHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+        try {
+          return mountState(initialState);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useDebugValue: function (value, formatterFn) {
+        currentHookNameInDev = 'useDebugValue';
+        updateHookTypesDev();
+        return mountDebugValue();
+      },
+      useResponder: function (responder, props) {
+        currentHookNameInDev = 'useResponder';
+        updateHookTypesDev();
+        return createDeprecatedResponderListener(responder, props);
+      },
+      useDeferredValue: function (value, config) {
+        currentHookNameInDev = 'useDeferredValue';
+        updateHookTypesDev();
+        return mountDeferredValue(value, config);
+      },
+      useTransition: function (config) {
+        currentHookNameInDev = 'useTransition';
+        updateHookTypesDev();
+        return mountTransition(config);
+      }
+    };
+    HooksDispatcherOnUpdateInDEV = {
+      readContext: function (context, observedBits) {
+        return readContext(context, observedBits);
+      },
+      useCallback: function (callback, deps) {
+        currentHookNameInDev = 'useCallback';
+        updateHookTypesDev();
+        return updateCallback(callback, deps);
+      },
+      useContext: function (context, observedBits) {
+        currentHookNameInDev = 'useContext';
+        updateHookTypesDev();
+        return readContext(context, observedBits);
+      },
+      useEffect: function (create, deps) {
+        currentHookNameInDev = 'useEffect';
+        updateHookTypesDev();
+        return updateEffect(create, deps);
+      },
+      useImperativeHandle: function (ref, create, deps) {
+        currentHookNameInDev = 'useImperativeHandle';
+        updateHookTypesDev();
+        return updateImperativeHandle(ref, create, deps);
+      },
+      useLayoutEffect: function (create, deps) {
+        currentHookNameInDev = 'useLayoutEffect';
+        updateHookTypesDev();
+        return updateLayoutEffect(create, deps);
+      },
+      useMemo: function (create, deps) {
+        currentHookNameInDev = 'useMemo';
+        updateHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+        try {
+          return updateMemo(create, deps);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useReducer: function (reducer, initialArg, init) {
+        currentHookNameInDev = 'useReducer';
+        updateHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+        try {
+          return updateReducer(reducer, initialArg, init);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useRef: function (initialValue) {
+        currentHookNameInDev = 'useRef';
+        updateHookTypesDev();
+        return updateRef();
+      },
+      useState: function (initialState) {
+        currentHookNameInDev = 'useState';
+        updateHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+        try {
+          return updateState(initialState);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useDebugValue: function (value, formatterFn) {
+        currentHookNameInDev = 'useDebugValue';
+        updateHookTypesDev();
+        return updateDebugValue();
+      },
+      useResponder: function (responder, props) {
+        currentHookNameInDev = 'useResponder';
+        updateHookTypesDev();
+        return createDeprecatedResponderListener(responder, props);
+      },
+      useDeferredValue: function (value, config) {
+        currentHookNameInDev = 'useDeferredValue';
+        updateHookTypesDev();
+        return updateDeferredValue(value, config);
+      },
+      useTransition: function (config) {
+        currentHookNameInDev = 'useTransition';
+        updateHookTypesDev();
+        return updateTransition(config);
+      }
+    };
+    HooksDispatcherOnRerenderInDEV = {
+      readContext: function (context, observedBits) {
+        return readContext(context, observedBits);
+      },
+      useCallback: function (callback, deps) {
+        currentHookNameInDev = 'useCallback';
+        updateHookTypesDev();
+        return updateCallback(callback, deps);
+      },
+      useContext: function (context, observedBits) {
+        currentHookNameInDev = 'useContext';
+        updateHookTypesDev();
+        return readContext(context, observedBits);
+      },
+      useEffect: function (create, deps) {
+        currentHookNameInDev = 'useEffect';
+        updateHookTypesDev();
+        return updateEffect(create, deps);
+      },
+      useImperativeHandle: function (ref, create, deps) {
+        currentHookNameInDev = 'useImperativeHandle';
+        updateHookTypesDev();
+        return updateImperativeHandle(ref, create, deps);
+      },
+      useLayoutEffect: function (create, deps) {
+        currentHookNameInDev = 'useLayoutEffect';
+        updateHookTypesDev();
+        return updateLayoutEffect(create, deps);
+      },
+      useMemo: function (create, deps) {
+        currentHookNameInDev = 'useMemo';
+        updateHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnRerenderInDEV;
+
+        try {
+          return updateMemo(create, deps);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useReducer: function (reducer, initialArg, init) {
+        currentHookNameInDev = 'useReducer';
+        updateHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnRerenderInDEV;
+
+        try {
+          return rerenderReducer(reducer, initialArg, init);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useRef: function (initialValue) {
+        currentHookNameInDev = 'useRef';
+        updateHookTypesDev();
+        return updateRef();
+      },
+      useState: function (initialState) {
+        currentHookNameInDev = 'useState';
+        updateHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnRerenderInDEV;
+
+        try {
+          return rerenderState(initialState);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useDebugValue: function (value, formatterFn) {
+        currentHookNameInDev = 'useDebugValue';
+        updateHookTypesDev();
+        return updateDebugValue();
+      },
+      useResponder: function (responder, props) {
+        currentHookNameInDev = 'useResponder';
+        updateHookTypesDev();
+        return createDeprecatedResponderListener(responder, props);
+      },
+      useDeferredValue: function (value, config) {
+        currentHookNameInDev = 'useDeferredValue';
+        updateHookTypesDev();
+        return rerenderDeferredValue(value, config);
+      },
+      useTransition: function (config) {
+        currentHookNameInDev = 'useTransition';
+        updateHookTypesDev();
+        return rerenderTransition(config);
+      }
+    };
+    InvalidNestedHooksDispatcherOnMountInDEV = {
+      readContext: function (context, observedBits) {
+        warnInvalidContextAccess();
+        return readContext(context, observedBits);
+      },
+      useCallback: function (callback, deps) {
+        currentHookNameInDev = 'useCallback';
+        warnInvalidHookAccess();
+        mountHookTypesDev();
+        return mountCallback(callback, deps);
+      },
+      useContext: function (context, observedBits) {
+        currentHookNameInDev = 'useContext';
+        warnInvalidHookAccess();
+        mountHookTypesDev();
+        return readContext(context, observedBits);
+      },
+      useEffect: function (create, deps) {
+        currentHookNameInDev = 'useEffect';
+        warnInvalidHookAccess();
+        mountHookTypesDev();
+        return mountEffect(create, deps);
+      },
+      useImperativeHandle: function (ref, create, deps) {
+        currentHookNameInDev = 'useImperativeHandle';
+        warnInvalidHookAccess();
+        mountHookTypesDev();
+        return mountImperativeHandle(ref, create, deps);
+      },
+      useLayoutEffect: function (create, deps) {
+        currentHookNameInDev = 'useLayoutEffect';
+        warnInvalidHookAccess();
+        mountHookTypesDev();
+        return mountLayoutEffect(create, deps);
+      },
+      useMemo: function (create, deps) {
+        currentHookNameInDev = 'useMemo';
+        warnInvalidHookAccess();
+        mountHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+        try {
+          return mountMemo(create, deps);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useReducer: function (reducer, initialArg, init) {
+        currentHookNameInDev = 'useReducer';
+        warnInvalidHookAccess();
+        mountHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+        try {
+          return mountReducer(reducer, initialArg, init);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useRef: function (initialValue) {
+        currentHookNameInDev = 'useRef';
+        warnInvalidHookAccess();
+        mountHookTypesDev();
+        return mountRef(initialValue);
+      },
+      useState: function (initialState) {
+        currentHookNameInDev = 'useState';
+        warnInvalidHookAccess();
+        mountHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnMountInDEV;
+
+        try {
+          return mountState(initialState);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useDebugValue: function (value, formatterFn) {
+        currentHookNameInDev = 'useDebugValue';
+        warnInvalidHookAccess();
+        mountHookTypesDev();
+        return mountDebugValue();
+      },
+      useResponder: function (responder, props) {
+        currentHookNameInDev = 'useResponder';
+        warnInvalidHookAccess();
+        mountHookTypesDev();
+        return createDeprecatedResponderListener(responder, props);
+      },
+      useDeferredValue: function (value, config) {
+        currentHookNameInDev = 'useDeferredValue';
+        warnInvalidHookAccess();
+        mountHookTypesDev();
+        return mountDeferredValue(value, config);
+      },
+      useTransition: function (config) {
+        currentHookNameInDev = 'useTransition';
+        warnInvalidHookAccess();
+        mountHookTypesDev();
+        return mountTransition(config);
+      }
+    };
+    InvalidNestedHooksDispatcherOnUpdateInDEV = {
+      readContext: function (context, observedBits) {
+        warnInvalidContextAccess();
+        return readContext(context, observedBits);
+      },
+      useCallback: function (callback, deps) {
+        currentHookNameInDev = 'useCallback';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return updateCallback(callback, deps);
+      },
+      useContext: function (context, observedBits) {
+        currentHookNameInDev = 'useContext';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return readContext(context, observedBits);
+      },
+      useEffect: function (create, deps) {
+        currentHookNameInDev = 'useEffect';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return updateEffect(create, deps);
+      },
+      useImperativeHandle: function (ref, create, deps) {
+        currentHookNameInDev = 'useImperativeHandle';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return updateImperativeHandle(ref, create, deps);
+      },
+      useLayoutEffect: function (create, deps) {
+        currentHookNameInDev = 'useLayoutEffect';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return updateLayoutEffect(create, deps);
+      },
+      useMemo: function (create, deps) {
+        currentHookNameInDev = 'useMemo';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+        try {
+          return updateMemo(create, deps);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useReducer: function (reducer, initialArg, init) {
+        currentHookNameInDev = 'useReducer';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+        try {
+          return updateReducer(reducer, initialArg, init);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useRef: function (initialValue) {
+        currentHookNameInDev = 'useRef';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return updateRef();
+      },
+      useState: function (initialState) {
+        currentHookNameInDev = 'useState';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+        try {
+          return updateState(initialState);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useDebugValue: function (value, formatterFn) {
+        currentHookNameInDev = 'useDebugValue';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return updateDebugValue();
+      },
+      useResponder: function (responder, props) {
+        currentHookNameInDev = 'useResponder';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return createDeprecatedResponderListener(responder, props);
+      },
+      useDeferredValue: function (value, config) {
+        currentHookNameInDev = 'useDeferredValue';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return updateDeferredValue(value, config);
+      },
+      useTransition: function (config) {
+        currentHookNameInDev = 'useTransition';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return updateTransition(config);
+      }
+    };
+    InvalidNestedHooksDispatcherOnRerenderInDEV = {
+      readContext: function (context, observedBits) {
+        warnInvalidContextAccess();
+        return readContext(context, observedBits);
+      },
+      useCallback: function (callback, deps) {
+        currentHookNameInDev = 'useCallback';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return updateCallback(callback, deps);
+      },
+      useContext: function (context, observedBits) {
+        currentHookNameInDev = 'useContext';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return readContext(context, observedBits);
+      },
+      useEffect: function (create, deps) {
+        currentHookNameInDev = 'useEffect';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return updateEffect(create, deps);
+      },
+      useImperativeHandle: function (ref, create, deps) {
+        currentHookNameInDev = 'useImperativeHandle';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return updateImperativeHandle(ref, create, deps);
+      },
+      useLayoutEffect: function (create, deps) {
+        currentHookNameInDev = 'useLayoutEffect';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return updateLayoutEffect(create, deps);
+      },
+      useMemo: function (create, deps) {
+        currentHookNameInDev = 'useMemo';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+        try {
+          return updateMemo(create, deps);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useReducer: function (reducer, initialArg, init) {
+        currentHookNameInDev = 'useReducer';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+        try {
+          return rerenderReducer(reducer, initialArg, init);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useRef: function (initialValue) {
+        currentHookNameInDev = 'useRef';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return updateRef();
+      },
+      useState: function (initialState) {
+        currentHookNameInDev = 'useState';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        var prevDispatcher = ReactCurrentDispatcher.current;
+        ReactCurrentDispatcher.current = InvalidNestedHooksDispatcherOnUpdateInDEV;
+
+        try {
+          return rerenderState(initialState);
+        } finally {
+          ReactCurrentDispatcher.current = prevDispatcher;
+        }
+      },
+      useDebugValue: function (value, formatterFn) {
+        currentHookNameInDev = 'useDebugValue';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return updateDebugValue();
+      },
+      useResponder: function (responder, props) {
+        currentHookNameInDev = 'useResponder';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return createDeprecatedResponderListener(responder, props);
+      },
+      useDeferredValue: function (value, config) {
+        currentHookNameInDev = 'useDeferredValue';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return rerenderDeferredValue(value, config);
+      },
+      useTransition: function (config) {
+        currentHookNameInDev = 'useTransition';
+        warnInvalidHookAccess();
+        updateHookTypesDev();
+        return rerenderTransition(config);
+      }
+    };
+  }
+
+  var now$1 = unstable_now;
+  var commitTime = 0;
+  var profilerStartTime = -1;
+
+  function getCommitTime() {
+    return commitTime;
+  }
+
+  function recordCommitTime() {
+
+    commitTime = now$1();
+  }
+
+  function startProfilerTimer(fiber) {
+
+    profilerStartTime = now$1();
+
+    if (fiber.actualStartTime < 0) {
+      fiber.actualStartTime = now$1();
+    }
+  }
+
+  function stopProfilerTimerIfRunning(fiber) {
+
+    profilerStartTime = -1;
+  }
+
+  function stopProfilerTimerIfRunningAndRecordDelta(fiber, overrideBaseTime) {
+
+    if (profilerStartTime >= 0) {
+      var elapsedTime = now$1() - profilerStartTime;
+      fiber.actualDuration += elapsedTime;
+
+      if (overrideBaseTime) {
+        fiber.selfBaseDuration = elapsedTime;
+      }
+
+      profilerStartTime = -1;
+    }
+  }
+
+  // This may have been an insertion or a hydration.
+
+  var hydrationParentFiber = null;
+  var nextHydratableInstance = null;
+  var isHydrating = false;
+
+  function enterHydrationState(fiber) {
+
+    var parentInstance = fiber.stateNode.containerInfo;
+    nextHydratableInstance = getFirstHydratableChild(parentInstance);
+    hydrationParentFiber = fiber;
+    isHydrating = true;
+    return true;
+  }
+
+  function deleteHydratableInstance(returnFiber, instance) {
+    {
+      switch (returnFiber.tag) {
+        case HostRoot:
+          didNotHydrateContainerInstance(returnFiber.stateNode.containerInfo, instance);
+          break;
+
+        case HostComponent:
+          didNotHydrateInstance(returnFiber.type, returnFiber.memoizedProps, returnFiber.stateNode, instance);
+          break;
+      }
+    }
+
+    var childToDelete = createFiberFromHostInstanceForDeletion();
+    childToDelete.stateNode = instance;
+    childToDelete.return = returnFiber;
+    childToDelete.effectTag = Deletion; // This might seem like it belongs on progressedFirstDeletion. However,
+    // these children are not part of the reconciliation list of children.
+    // Even if we abort and rereconcile the children, that will try to hydrate
+    // again and the nodes are still in the host tree so these will be
+    // recreated.
+
+    if (returnFiber.lastEffect !== null) {
+      returnFiber.lastEffect.nextEffect = childToDelete;
+      returnFiber.lastEffect = childToDelete;
+    } else {
+      returnFiber.firstEffect = returnFiber.lastEffect = childToDelete;
+    }
+  }
+
+  function insertNonHydratedInstance(returnFiber, fiber) {
+    fiber.effectTag = fiber.effectTag & ~Hydrating | Placement;
+
+    {
+      switch (returnFiber.tag) {
+        case HostRoot:
+          {
+            var parentContainer = returnFiber.stateNode.containerInfo;
+
+            switch (fiber.tag) {
+              case HostComponent:
+                var type = fiber.type;
+                var props = fiber.pendingProps;
+                didNotFindHydratableContainerInstance(parentContainer, type);
+                break;
+
+              case HostText:
+                var text = fiber.pendingProps;
+                didNotFindHydratableContainerTextInstance(parentContainer, text);
+                break;
+            }
+
+            break;
+          }
+
+        case HostComponent:
+          {
+            var parentType = returnFiber.type;
+            var parentProps = returnFiber.memoizedProps;
+            var parentInstance = returnFiber.stateNode;
+
+            switch (fiber.tag) {
+              case HostComponent:
+                var _type = fiber.type;
+                var _props = fiber.pendingProps;
+                didNotFindHydratableInstance(parentType, parentProps, parentInstance, _type);
+                break;
+
+              case HostText:
+                var _text = fiber.pendingProps;
+                didNotFindHydratableTextInstance(parentType, parentProps, parentInstance, _text);
+                break;
+
+              case SuspenseComponent:
+                didNotFindHydratableSuspenseInstance(parentType, parentProps);
+                break;
+            }
+
+            break;
+          }
+
+        default:
+          return;
+      }
+    }
+  }
+
+  function tryHydrate(fiber, nextInstance) {
+    switch (fiber.tag) {
+      case HostComponent:
+        {
+          var type = fiber.type;
+          var props = fiber.pendingProps;
+          var instance = canHydrateInstance(nextInstance, type);
+
+          if (instance !== null) {
+            fiber.stateNode = instance;
+            return true;
+          }
+
+          return false;
+        }
+
+      case HostText:
+        {
+          var text = fiber.pendingProps;
+          var textInstance = canHydrateTextInstance(nextInstance, text);
+
+          if (textInstance !== null) {
+            fiber.stateNode = textInstance;
+            return true;
+          }
+
+          return false;
+        }
+
+      case SuspenseComponent:
+        {
+
+          return false;
+        }
+
+      default:
+        return false;
+    }
+  }
+
+  function tryToClaimNextHydratableInstance(fiber) {
+    if (!isHydrating) {
+      return;
+    }
+
+    var nextInstance = nextHydratableInstance;
+
+    if (!nextInstance) {
+      // Nothing to hydrate. Make it an insertion.
+      insertNonHydratedInstance(hydrationParentFiber, fiber);
+      isHydrating = false;
+      hydrationParentFiber = fiber;
+      return;
+    }
+
+    var firstAttemptedInstance = nextInstance;
+
+    if (!tryHydrate(fiber, nextInstance)) {
+      // If we can't hydrate this instance let's try the next one.
+      // We use this as a heuristic. It's based on intuition and not data so it
+      // might be flawed or unnecessary.
+      nextInstance = getNextHydratableSibling(firstAttemptedInstance);
+
+      if (!nextInstance || !tryHydrate(fiber, nextInstance)) {
+        // Nothing to hydrate. Make it an insertion.
+        insertNonHydratedInstance(hydrationParentFiber, fiber);
+        isHydrating = false;
+        hydrationParentFiber = fiber;
+        return;
+      } // We matched the next one, we'll now assume that the first one was
+      // superfluous and we'll delete it. Since we can't eagerly delete it
+      // we'll have to schedule a deletion. To do that, this node needs a dummy
+      // fiber associated with it.
+
+
+      deleteHydratableInstance(hydrationParentFiber, firstAttemptedInstance);
+    }
+
+    hydrationParentFiber = fiber;
+    nextHydratableInstance = getFirstHydratableChild(nextInstance);
+  }
+
+  function prepareToHydrateHostInstance(fiber, rootContainerInstance, hostContext) {
+
+    var instance = fiber.stateNode;
+    var updatePayload = hydrateInstance(instance, fiber.type, fiber.memoizedProps, rootContainerInstance, hostContext, fiber); // TODO: Type this specific to this type of component.
+
+    fiber.updateQueue = updatePayload; // If the update payload indicates that there is a change or if there
+    // is a new ref we mark this as an update.
+
+    if (updatePayload !== null) {
+      return true;
+    }
+
+    return false;
+  }
+
+  function prepareToHydrateHostTextInstance(fiber) {
+
+    var textInstance = fiber.stateNode;
+    var textContent = fiber.memoizedProps;
+    var shouldUpdate = hydrateTextInstance(textInstance, textContent, fiber);
+
+    {
+      if (shouldUpdate) {
+        // We assume that prepareToHydrateHostTextInstance is called in a context where the
+        // hydration parent is the parent host component of this host text.
+        var returnFiber = hydrationParentFiber;
+
+        if (returnFiber !== null) {
+          switch (returnFiber.tag) {
+            case HostRoot:
+              {
+                var parentContainer = returnFiber.stateNode.containerInfo;
+                didNotMatchHydratedContainerTextInstance(parentContainer, textInstance, textContent);
+                break;
+              }
+
+            case HostComponent:
+              {
+                var parentType = returnFiber.type;
+                var parentProps = returnFiber.memoizedProps;
+                var parentInstance = returnFiber.stateNode;
+                didNotMatchHydratedTextInstance(parentType, parentProps, parentInstance, textInstance, textContent);
+                break;
+              }
+          }
+        }
+      }
+    }
+
+    return shouldUpdate;
+  }
+
+  function skipPastDehydratedSuspenseInstance(fiber) {
+
+    var suspenseState = fiber.memoizedState;
+    var suspenseInstance = suspenseState !== null ? suspenseState.dehydrated : null;
+
+    if (!suspenseInstance) {
+      {
+        throw Error( "Expected to have a hydrated suspense instance. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+
+    return getNextHydratableInstanceAfterSuspenseInstance(suspenseInstance);
+  }
+
+  function popToNextHostParent(fiber) {
+    var parent = fiber.return;
+
+    while (parent !== null && parent.tag !== HostComponent && parent.tag !== HostRoot && parent.tag !== SuspenseComponent) {
+      parent = parent.return;
+    }
+
+    hydrationParentFiber = parent;
+  }
+
+  function popHydrationState(fiber) {
+
+    if (fiber !== hydrationParentFiber) {
+      // We're deeper than the current hydration context, inside an inserted
+      // tree.
+      return false;
+    }
+
+    if (!isHydrating) {
+      // If we're not currently hydrating but we're in a hydration context, then
+      // we were an insertion and now need to pop up reenter hydration of our
+      // siblings.
+      popToNextHostParent(fiber);
+      isHydrating = true;
+      return false;
+    }
+
+    var type = fiber.type; // If we have any remaining hydratable nodes, we need to delete them now.
+    // We only do this deeper than head and body since they tend to have random
+    // other nodes in them. We also ignore components with pure text content in
+    // side of them.
+    // TODO: Better heuristic.
+
+    if (fiber.tag !== HostComponent || type !== 'head' && type !== 'body' && !shouldSetTextContent(type, fiber.memoizedProps)) {
+      var nextInstance = nextHydratableInstance;
+
+      while (nextInstance) {
+        deleteHydratableInstance(fiber, nextInstance);
+        nextInstance = getNextHydratableSibling(nextInstance);
+      }
+    }
+
+    popToNextHostParent(fiber);
+
+    if (fiber.tag === SuspenseComponent) {
+      nextHydratableInstance = skipPastDehydratedSuspenseInstance(fiber);
+    } else {
+      nextHydratableInstance = hydrationParentFiber ? getNextHydratableSibling(fiber.stateNode) : null;
+    }
+
+    return true;
+  }
+
+  function resetHydrationState() {
+
+    hydrationParentFiber = null;
+    nextHydratableInstance = null;
+    isHydrating = false;
+  }
+
+  var ReactCurrentOwner$1 = ReactSharedInternals.ReactCurrentOwner;
+  var didReceiveUpdate = false;
+  var didWarnAboutBadClass;
+  var didWarnAboutModulePatternComponent;
+  var didWarnAboutContextTypeOnFunctionComponent;
+  var didWarnAboutGetDerivedStateOnFunctionComponent;
+  var didWarnAboutFunctionRefs;
+  var didWarnAboutReassigningProps;
+  var didWarnAboutRevealOrder;
+  var didWarnAboutTailOptions;
+
+  {
+    didWarnAboutBadClass = {};
+    didWarnAboutModulePatternComponent = {};
+    didWarnAboutContextTypeOnFunctionComponent = {};
+    didWarnAboutGetDerivedStateOnFunctionComponent = {};
+    didWarnAboutFunctionRefs = {};
+    didWarnAboutReassigningProps = false;
+    didWarnAboutRevealOrder = {};
+    didWarnAboutTailOptions = {};
+  }
+
+  function reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime) {
+    if (current === null) {
+      // If this is a fresh new component that hasn't been rendered yet, we
+      // won't update its child set by applying minimal side-effects. Instead,
+      // we will add them all to the child before it gets rendered. That means
+      // we can optimize this reconciliation pass by not tracking side-effects.
+      workInProgress.child = mountChildFibers(workInProgress, null, nextChildren, renderExpirationTime);
+    } else {
+      // If the current child is the same as the work in progress, it means that
+      // we haven't yet started any work on these children. Therefore, we use
+      // the clone algorithm to create a copy of all the current children.
+      // If we had any progressed work already, that is invalid at this point so
+      // let's throw it out.
+      workInProgress.child = reconcileChildFibers(workInProgress, current.child, nextChildren, renderExpirationTime);
+    }
+  }
+
+  function forceUnmountCurrentAndReconcile(current, workInProgress, nextChildren, renderExpirationTime) {
+    // This function is fork of reconcileChildren. It's used in cases where we
+    // want to reconcile without matching against the existing set. This has the
+    // effect of all current children being unmounted; even if the type and key
+    // are the same, the old child is unmounted and a new child is created.
+    //
+    // To do this, we're going to go through the reconcile algorithm twice. In
+    // the first pass, we schedule a deletion for all the current children by
+    // passing null.
+    workInProgress.child = reconcileChildFibers(workInProgress, current.child, null, renderExpirationTime); // In the second pass, we mount the new children. The trick here is that we
+    // pass null in place of where we usually pass the current child set. This has
+    // the effect of remounting all children regardless of whether their
+    // identities match.
+
+    workInProgress.child = reconcileChildFibers(workInProgress, null, nextChildren, renderExpirationTime);
+  }
+
+  function updateForwardRef(current, workInProgress, Component, nextProps, renderExpirationTime) {
+    // TODO: current can be non-null here even if the component
+    // hasn't yet mounted. This happens after the first render suspends.
+    // We'll need to figure out if this is fine or can cause issues.
+    {
+      if (workInProgress.type !== workInProgress.elementType) {
+        // Lazy component props can't be validated in createElement
+        // because they're only guaranteed to be resolved here.
+        var innerPropTypes = Component.propTypes;
+
+        if (innerPropTypes) {
+          checkPropTypes_1(innerPropTypes, nextProps, // Resolved props
+          'prop', getComponentName(Component), getCurrentFiberStackInDev);
+        }
+      }
+    }
+
+    var render = Component.render;
+    var ref = workInProgress.ref; // The rest is a fork of updateFunctionComponent
+
+    var nextChildren;
+    prepareToReadContext(workInProgress, renderExpirationTime);
+
+    {
+      ReactCurrentOwner$1.current = workInProgress;
+      setIsRendering(true);
+      nextChildren = renderWithHooks(current, workInProgress, render, nextProps, ref, renderExpirationTime);
+
+      if ( workInProgress.mode & StrictMode) {
+        // Only double-render components with Hooks
+        if (workInProgress.memoizedState !== null) {
+          nextChildren = renderWithHooks(current, workInProgress, render, nextProps, ref, renderExpirationTime);
+        }
+      }
+
+      setIsRendering(false);
+    }
+
+    if (current !== null && !didReceiveUpdate) {
+      bailoutHooks(current, workInProgress, renderExpirationTime);
+      return bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+    } // React DevTools reads this flag.
+
+
+    workInProgress.effectTag |= PerformedWork;
+    reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+    return workInProgress.child;
+  }
+
+  function updateMemoComponent(current, workInProgress, Component, nextProps, updateExpirationTime, renderExpirationTime) {
+    if (current === null) {
+      var type = Component.type;
+
+      if (isSimpleFunctionComponent(type) && Component.compare === null && // SimpleMemoComponent codepath doesn't resolve outer props either.
+      Component.defaultProps === undefined) {
+        var resolvedType = type;
+
+        {
+          resolvedType = resolveFunctionForHotReloading(type);
+        } // If this is a plain function component without default props,
+        // and with only the default shallow comparison, we upgrade it
+        // to a SimpleMemoComponent to allow fast path updates.
+
+
+        workInProgress.tag = SimpleMemoComponent;
+        workInProgress.type = resolvedType;
+
+        {
+          validateFunctionComponentInDev(workInProgress, type);
+        }
+
+        return updateSimpleMemoComponent(current, workInProgress, resolvedType, nextProps, updateExpirationTime, renderExpirationTime);
+      }
+
+      {
+        var innerPropTypes = type.propTypes;
+
+        if (innerPropTypes) {
+          // Inner memo component props aren't currently validated in createElement.
+          // We could move it there, but we'd still need this for lazy code path.
+          checkPropTypes_1(innerPropTypes, nextProps, // Resolved props
+          'prop', getComponentName(type), getCurrentFiberStackInDev);
+        }
+      }
+
+      var child = createFiberFromTypeAndProps(Component.type, null, nextProps, null, workInProgress.mode, renderExpirationTime);
+      child.ref = workInProgress.ref;
+      child.return = workInProgress;
+      workInProgress.child = child;
+      return child;
+    }
+
+    {
+      var _type = Component.type;
+      var _innerPropTypes = _type.propTypes;
+
+      if (_innerPropTypes) {
+        // Inner memo component props aren't currently validated in createElement.
+        // We could move it there, but we'd still need this for lazy code path.
+        checkPropTypes_1(_innerPropTypes, nextProps, // Resolved props
+        'prop', getComponentName(_type), getCurrentFiberStackInDev);
+      }
+    }
+
+    var currentChild = current.child; // This is always exactly one child
+
+    if (updateExpirationTime < renderExpirationTime) {
+      // This will be the props with resolved defaultProps,
+      // unlike current.memoizedProps which will be the unresolved ones.
+      var prevProps = currentChild.memoizedProps; // Default to shallow comparison
+
+      var compare = Component.compare;
+      compare = compare !== null ? compare : shallowEqual;
+
+      if (compare(prevProps, nextProps) && current.ref === workInProgress.ref) {
+        return bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+      }
+    } // React DevTools reads this flag.
+
+
+    workInProgress.effectTag |= PerformedWork;
+    var newChild = createWorkInProgress(currentChild, nextProps);
+    newChild.ref = workInProgress.ref;
+    newChild.return = workInProgress;
+    workInProgress.child = newChild;
+    return newChild;
+  }
+
+  function updateSimpleMemoComponent(current, workInProgress, Component, nextProps, updateExpirationTime, renderExpirationTime) {
+    // TODO: current can be non-null here even if the component
+    // hasn't yet mounted. This happens when the inner render suspends.
+    // We'll need to figure out if this is fine or can cause issues.
+    {
+      if (workInProgress.type !== workInProgress.elementType) {
+        // Lazy component props can't be validated in createElement
+        // because they're only guaranteed to be resolved here.
+        var outerMemoType = workInProgress.elementType;
+
+        if (outerMemoType.$$typeof === REACT_LAZY_TYPE) {
+          // We warn when you define propTypes on lazy()
+          // so let's just skip over it to find memo() outer wrapper.
+          // Inner props for memo are validated later.
+          outerMemoType = refineResolvedLazyComponent(outerMemoType);
+        }
+
+        var outerPropTypes = outerMemoType && outerMemoType.propTypes;
+
+        if (outerPropTypes) {
+          checkPropTypes_1(outerPropTypes, nextProps, // Resolved (SimpleMemoComponent has no defaultProps)
+          'prop', getComponentName(outerMemoType), getCurrentFiberStackInDev);
+        } // Inner propTypes will be validated in the function component path.
+
+      }
+    }
+
+    if (current !== null) {
+      var prevProps = current.memoizedProps;
+
+      if (shallowEqual(prevProps, nextProps) && current.ref === workInProgress.ref && ( // Prevent bailout if the implementation changed due to hot reload.
+       workInProgress.type === current.type )) {
+        didReceiveUpdate = false;
+
+        if (updateExpirationTime < renderExpirationTime) {
+          // The pending update priority was cleared at the beginning of
+          // beginWork. We're about to bail out, but there might be additional
+          // updates at a lower priority. Usually, the priority level of the
+          // remaining updates is accumlated during the evaluation of the
+          // component (i.e. when processing the update queue). But since since
+          // we're bailing out early *without* evaluating the component, we need
+          // to account for it here, too. Reset to the value of the current fiber.
+          // NOTE: This only applies to SimpleMemoComponent, not MemoComponent,
+          // because a MemoComponent fiber does not have hooks or an update queue;
+          // rather, it wraps around an inner component, which may or may not
+          // contains hooks.
+          // TODO: Move the reset at in beginWork out of the common path so that
+          // this is no longer necessary.
+          workInProgress.expirationTime = current.expirationTime;
+          return bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+        }
+      }
+    }
+
+    return updateFunctionComponent(current, workInProgress, Component, nextProps, renderExpirationTime);
+  }
+
+  function updateFragment(current, workInProgress, renderExpirationTime) {
+    var nextChildren = workInProgress.pendingProps;
+    reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+    return workInProgress.child;
+  }
+
+  function updateMode(current, workInProgress, renderExpirationTime) {
+    var nextChildren = workInProgress.pendingProps.children;
+    reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+    return workInProgress.child;
+  }
+
+  function updateProfiler(current, workInProgress, renderExpirationTime) {
+    {
+      workInProgress.effectTag |= Update;
+    }
+
+    var nextProps = workInProgress.pendingProps;
+    var nextChildren = nextProps.children;
+    reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+    return workInProgress.child;
+  }
+
+  function markRef(current, workInProgress) {
+    var ref = workInProgress.ref;
+
+    if (current === null && ref !== null || current !== null && current.ref !== ref) {
+      // Schedule a Ref effect
+      workInProgress.effectTag |= Ref;
+    }
+  }
+
+  function updateFunctionComponent(current, workInProgress, Component, nextProps, renderExpirationTime) {
+    {
+      if (workInProgress.type !== workInProgress.elementType) {
+        // Lazy component props can't be validated in createElement
+        // because they're only guaranteed to be resolved here.
+        var innerPropTypes = Component.propTypes;
+
+        if (innerPropTypes) {
+          checkPropTypes_1(innerPropTypes, nextProps, // Resolved props
+          'prop', getComponentName(Component), getCurrentFiberStackInDev);
+        }
+      }
+    }
+
+    var context;
+
+    {
+      var unmaskedContext = getUnmaskedContext(workInProgress, Component, true);
+      context = getMaskedContext(workInProgress, unmaskedContext);
+    }
+
+    var nextChildren;
+    prepareToReadContext(workInProgress, renderExpirationTime);
+
+    {
+      ReactCurrentOwner$1.current = workInProgress;
+      setIsRendering(true);
+      nextChildren = renderWithHooks(current, workInProgress, Component, nextProps, context, renderExpirationTime);
+
+      if ( workInProgress.mode & StrictMode) {
+        // Only double-render components with Hooks
+        if (workInProgress.memoizedState !== null) {
+          nextChildren = renderWithHooks(current, workInProgress, Component, nextProps, context, renderExpirationTime);
+        }
+      }
+
+      setIsRendering(false);
+    }
+
+    if (current !== null && !didReceiveUpdate) {
+      bailoutHooks(current, workInProgress, renderExpirationTime);
+      return bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+    } // React DevTools reads this flag.
+
+
+    workInProgress.effectTag |= PerformedWork;
+    reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+    return workInProgress.child;
+  }
+
+  function updateClassComponent(current, workInProgress, Component, nextProps, renderExpirationTime) {
+    {
+      if (workInProgress.type !== workInProgress.elementType) {
+        // Lazy component props can't be validated in createElement
+        // because they're only guaranteed to be resolved here.
+        var innerPropTypes = Component.propTypes;
+
+        if (innerPropTypes) {
+          checkPropTypes_1(innerPropTypes, nextProps, // Resolved props
+          'prop', getComponentName(Component), getCurrentFiberStackInDev);
+        }
+      }
+    } // Push context providers early to prevent context stack mismatches.
+    // During mounting we don't know the child context yet as the instance doesn't exist.
+    // We will invalidate the child context in finishClassComponent() right after rendering.
+
+
+    var hasContext;
+
+    if (isContextProvider(Component)) {
+      hasContext = true;
+      pushContextProvider(workInProgress);
+    } else {
+      hasContext = false;
+    }
+
+    prepareToReadContext(workInProgress, renderExpirationTime);
+    var instance = workInProgress.stateNode;
+    var shouldUpdate;
+
+    if (instance === null) {
+      if (current !== null) {
+        // A class component without an instance only mounts if it suspended
+        // inside a non-concurrent tree, in an inconsistent state. We want to
+        // treat it like a new mount, even though an empty version of it already
+        // committed. Disconnect the alternate pointers.
+        current.alternate = null;
+        workInProgress.alternate = null; // Since this is conceptually a new fiber, schedule a Placement effect
+
+        workInProgress.effectTag |= Placement;
+      } // In the initial pass we might need to construct the instance.
+
+
+      constructClassInstance(workInProgress, Component, nextProps);
+      mountClassInstance(workInProgress, Component, nextProps, renderExpirationTime);
+      shouldUpdate = true;
+    } else if (current === null) {
+      // In a resume, we'll already have an instance we can reuse.
+      shouldUpdate = resumeMountClassInstance(workInProgress, Component, nextProps, renderExpirationTime);
+    } else {
+      shouldUpdate = updateClassInstance(current, workInProgress, Component, nextProps, renderExpirationTime);
+    }
+
+    var nextUnitOfWork = finishClassComponent(current, workInProgress, Component, shouldUpdate, hasContext, renderExpirationTime);
+
+    {
+      var inst = workInProgress.stateNode;
+
+      if (inst.props !== nextProps) {
+        if (!didWarnAboutReassigningProps) {
+          error('It looks like %s is reassigning its own `this.props` while rendering. ' + 'This is not supported and can lead to confusing bugs.', getComponentName(workInProgress.type) || 'a component');
+        }
+
+        didWarnAboutReassigningProps = true;
+      }
+    }
+
+    return nextUnitOfWork;
+  }
+
+  function finishClassComponent(current, workInProgress, Component, shouldUpdate, hasContext, renderExpirationTime) {
+    // Refs should update even if shouldComponentUpdate returns false
+    markRef(current, workInProgress);
+    var didCaptureError = (workInProgress.effectTag & DidCapture) !== NoEffect;
+
+    if (!shouldUpdate && !didCaptureError) {
+      // Context providers should defer to sCU for rendering
+      if (hasContext) {
+        invalidateContextProvider(workInProgress, Component, false);
+      }
+
+      return bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+    }
+
+    var instance = workInProgress.stateNode; // Rerender
+
+    ReactCurrentOwner$1.current = workInProgress;
+    var nextChildren;
+
+    if (didCaptureError && typeof Component.getDerivedStateFromError !== 'function') {
+      // If we captured an error, but getDerivedStateFromError is not defined,
+      // unmount all the children. componentDidCatch will schedule an update to
+      // re-render a fallback. This is temporary until we migrate everyone to
+      // the new API.
+      // TODO: Warn in a future release.
+      nextChildren = null;
+
+      {
+        stopProfilerTimerIfRunning();
+      }
+    } else {
+      {
+        setIsRendering(true);
+        nextChildren = instance.render();
+
+        if ( workInProgress.mode & StrictMode) {
+          instance.render();
+        }
+
+        setIsRendering(false);
+      }
+    } // React DevTools reads this flag.
+
+
+    workInProgress.effectTag |= PerformedWork;
+
+    if (current !== null && didCaptureError) {
+      // If we're recovering from an error, reconcile without reusing any of
+      // the existing children. Conceptually, the normal children and the children
+      // that are shown on error are two different sets, so we shouldn't reuse
+      // normal children even if their identities match.
+      forceUnmountCurrentAndReconcile(current, workInProgress, nextChildren, renderExpirationTime);
+    } else {
+      reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+    } // Memoize state using the values we just used to render.
+    // TODO: Restructure so we never read values from the instance.
+
+
+    workInProgress.memoizedState = instance.state; // The context might have changed so we need to recalculate it.
+
+    if (hasContext) {
+      invalidateContextProvider(workInProgress, Component, true);
+    }
+
+    return workInProgress.child;
+  }
+
+  function pushHostRootContext(workInProgress) {
+    var root = workInProgress.stateNode;
+
+    if (root.pendingContext) {
+      pushTopLevelContextObject(workInProgress, root.pendingContext, root.pendingContext !== root.context);
+    } else if (root.context) {
+      // Should always be set
+      pushTopLevelContextObject(workInProgress, root.context, false);
+    }
+
+    pushHostContainer(workInProgress, root.containerInfo);
+  }
+
+  function updateHostRoot(current, workInProgress, renderExpirationTime) {
+    pushHostRootContext(workInProgress);
+    var updateQueue = workInProgress.updateQueue;
+
+    if (!(current !== null && updateQueue !== null)) {
+      {
+        throw Error( "If the root does not have an updateQueue, we should have already bailed out. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+
+    var nextProps = workInProgress.pendingProps;
+    var prevState = workInProgress.memoizedState;
+    var prevChildren = prevState !== null ? prevState.element : null;
+    cloneUpdateQueue(current, workInProgress);
+    processUpdateQueue(workInProgress, nextProps, null, renderExpirationTime);
+    var nextState = workInProgress.memoizedState; // Caution: React DevTools currently depends on this property
+    // being called "element".
+
+    var nextChildren = nextState.element;
+
+    if (nextChildren === prevChildren) {
+      // If the state is the same as before, that's a bailout because we had
+      // no work that expires at this time.
+      resetHydrationState();
+      return bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+    }
+
+    var root = workInProgress.stateNode;
+
+    if (root.hydrate && enterHydrationState(workInProgress)) {
+      // If we don't have any current children this might be the first pass.
+      // We always try to hydrate. If this isn't a hydration pass there won't
+      // be any children to hydrate which is effectively the same thing as
+      // not hydrating.
+      var child = mountChildFibers(workInProgress, null, nextChildren, renderExpirationTime);
+      workInProgress.child = child;
+      var node = child;
+
+      while (node) {
+        // Mark each child as hydrating. This is a fast path to know whether this
+        // tree is part of a hydrating tree. This is used to determine if a child
+        // node has fully mounted yet, and for scheduling event replaying.
+        // Conceptually this is similar to Placement in that a new subtree is
+        // inserted into the React tree here. It just happens to not need DOM
+        // mutations because it already exists.
+        node.effectTag = node.effectTag & ~Placement | Hydrating;
+        node = node.sibling;
+      }
+    } else {
+      // Otherwise reset hydration state in case we aborted and resumed another
+      // root.
+      reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+      resetHydrationState();
+    }
+
+    return workInProgress.child;
+  }
+
+  function updateHostComponent(current, workInProgress, renderExpirationTime) {
+    pushHostContext(workInProgress);
+
+    if (current === null) {
+      tryToClaimNextHydratableInstance(workInProgress);
+    }
+
+    var type = workInProgress.type;
+    var nextProps = workInProgress.pendingProps;
+    var prevProps = current !== null ? current.memoizedProps : null;
+    var nextChildren = nextProps.children;
+    var isDirectTextChild = shouldSetTextContent(type, nextProps);
+
+    if (isDirectTextChild) {
+      // We special case a direct text child of a host node. This is a common
+      // case. We won't handle it as a reified child. We will instead handle
+      // this in the host environment that also has access to this prop. That
+      // avoids allocating another HostText fiber and traversing it.
+      nextChildren = null;
+    } else if (prevProps !== null && shouldSetTextContent(type, prevProps)) {
+      // If we're switching from a direct text child to a normal child, or to
+      // empty, we need to schedule the text content to be reset.
+      workInProgress.effectTag |= ContentReset;
+    }
+
+    markRef(current, workInProgress); // Check the host config to see if the children are offscreen/hidden.
+
+    if (workInProgress.mode & ConcurrentMode && renderExpirationTime !== Never && shouldDeprioritizeSubtree(type, nextProps)) {
+      {
+        markSpawnedWork(Never);
+      } // Schedule this fiber to re-render at offscreen priority. Then bailout.
+
+
+      workInProgress.expirationTime = workInProgress.childExpirationTime = Never;
+      return null;
+    }
+
+    reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+    return workInProgress.child;
+  }
+
+  function updateHostText(current, workInProgress) {
+    if (current === null) {
+      tryToClaimNextHydratableInstance(workInProgress);
+    } // Nothing to do here. This is terminal. We'll do the completion step
+    // immediately after.
+
+
+    return null;
+  }
+
+  function mountLazyComponent(_current, workInProgress, elementType, updateExpirationTime, renderExpirationTime) {
+    if (_current !== null) {
+      // A lazy component only mounts if it suspended inside a non-
+      // concurrent tree, in an inconsistent state. We want to treat it like
+      // a new mount, even though an empty version of it already committed.
+      // Disconnect the alternate pointers.
+      _current.alternate = null;
+      workInProgress.alternate = null; // Since this is conceptually a new fiber, schedule a Placement effect
+
+      workInProgress.effectTag |= Placement;
+    }
+
+    var props = workInProgress.pendingProps; // We can't start a User Timing measurement with correct label yet.
+    // Cancel and resume right after we know the tag.
+
+    cancelWorkTimer(workInProgress);
+    var Component = readLazyComponentType(elementType); // Store the unwrapped component in the type.
+
+    workInProgress.type = Component;
+    var resolvedTag = workInProgress.tag = resolveLazyComponentTag(Component);
+    startWorkTimer(workInProgress);
+    var resolvedProps = resolveDefaultProps(Component, props);
+    var child;
+
+    switch (resolvedTag) {
+      case FunctionComponent:
+        {
+          {
+            validateFunctionComponentInDev(workInProgress, Component);
+            workInProgress.type = Component = resolveFunctionForHotReloading(Component);
+          }
+
+          child = updateFunctionComponent(null, workInProgress, Component, resolvedProps, renderExpirationTime);
+          return child;
+        }
+
+      case ClassComponent:
+        {
+          {
+            workInProgress.type = Component = resolveClassForHotReloading(Component);
+          }
+
+          child = updateClassComponent(null, workInProgress, Component, resolvedProps, renderExpirationTime);
+          return child;
+        }
+
+      case ForwardRef:
+        {
+          {
+            workInProgress.type = Component = resolveForwardRefForHotReloading(Component);
+          }
+
+          child = updateForwardRef(null, workInProgress, Component, resolvedProps, renderExpirationTime);
+          return child;
+        }
+
+      case MemoComponent:
+        {
+          {
+            if (workInProgress.type !== workInProgress.elementType) {
+              var outerPropTypes = Component.propTypes;
+
+              if (outerPropTypes) {
+                checkPropTypes_1(outerPropTypes, resolvedProps, // Resolved for outer only
+                'prop', getComponentName(Component), getCurrentFiberStackInDev);
+              }
+            }
+          }
+
+          child = updateMemoComponent(null, workInProgress, Component, resolveDefaultProps(Component.type, resolvedProps), // The inner type can have defaults too
+          updateExpirationTime, renderExpirationTime);
+          return child;
+        }
+    }
+
+    var hint = '';
+
+    {
+      if (Component !== null && typeof Component === 'object' && Component.$$typeof === REACT_LAZY_TYPE) {
+        hint = ' Did you wrap a component in React.lazy() more than once?';
+      }
+    } // This message intentionally doesn't mention ForwardRef or MemoComponent
+    // because the fact that it's a separate type of work is an
+    // implementation detail.
+
+
+    {
+      {
+        throw Error( "Element type is invalid. Received a promise that resolves to: " + Component + ". Lazy element type must resolve to a class or function." + hint );
+      }
+    }
+  }
+
+  function mountIncompleteClassComponent(_current, workInProgress, Component, nextProps, renderExpirationTime) {
+    if (_current !== null) {
+      // An incomplete component only mounts if it suspended inside a non-
+      // concurrent tree, in an inconsistent state. We want to treat it like
+      // a new mount, even though an empty version of it already committed.
+      // Disconnect the alternate pointers.
+      _current.alternate = null;
+      workInProgress.alternate = null; // Since this is conceptually a new fiber, schedule a Placement effect
+
+      workInProgress.effectTag |= Placement;
+    } // Promote the fiber to a class and try rendering again.
+
+
+    workInProgress.tag = ClassComponent; // The rest of this function is a fork of `updateClassComponent`
+    // Push context providers early to prevent context stack mismatches.
+    // During mounting we don't know the child context yet as the instance doesn't exist.
+    // We will invalidate the child context in finishClassComponent() right after rendering.
+
+    var hasContext;
+
+    if (isContextProvider(Component)) {
+      hasContext = true;
+      pushContextProvider(workInProgress);
+    } else {
+      hasContext = false;
+    }
+
+    prepareToReadContext(workInProgress, renderExpirationTime);
+    constructClassInstance(workInProgress, Component, nextProps);
+    mountClassInstance(workInProgress, Component, nextProps, renderExpirationTime);
+    return finishClassComponent(null, workInProgress, Component, true, hasContext, renderExpirationTime);
+  }
+
+  function mountIndeterminateComponent(_current, workInProgress, Component, renderExpirationTime) {
+    if (_current !== null) {
+      // An indeterminate component only mounts if it suspended inside a non-
+      // concurrent tree, in an inconsistent state. We want to treat it like
+      // a new mount, even though an empty version of it already committed.
+      // Disconnect the alternate pointers.
+      _current.alternate = null;
+      workInProgress.alternate = null; // Since this is conceptually a new fiber, schedule a Placement effect
+
+      workInProgress.effectTag |= Placement;
+    }
+
+    var props = workInProgress.pendingProps;
+    var context;
+
+    {
+      var unmaskedContext = getUnmaskedContext(workInProgress, Component, false);
+      context = getMaskedContext(workInProgress, unmaskedContext);
+    }
+
+    prepareToReadContext(workInProgress, renderExpirationTime);
+    var value;
+
+    {
+      if (Component.prototype && typeof Component.prototype.render === 'function') {
+        var componentName = getComponentName(Component) || 'Unknown';
+
+        if (!didWarnAboutBadClass[componentName]) {
+          error("The <%s /> component appears to have a render method, but doesn't extend React.Component. " + 'This is likely to cause errors. Change %s to extend React.Component instead.', componentName, componentName);
+
+          didWarnAboutBadClass[componentName] = true;
+        }
+      }
+
+      if (workInProgress.mode & StrictMode) {
+        ReactStrictModeWarnings.recordLegacyContextWarning(workInProgress, null);
+      }
+
+      setIsRendering(true);
+      ReactCurrentOwner$1.current = workInProgress;
+      value = renderWithHooks(null, workInProgress, Component, props, context, renderExpirationTime);
+      setIsRendering(false);
+    } // React DevTools reads this flag.
+
+
+    workInProgress.effectTag |= PerformedWork;
+
+    if (typeof value === 'object' && value !== null && typeof value.render === 'function' && value.$$typeof === undefined) {
+      {
+        var _componentName = getComponentName(Component) || 'Unknown';
+
+        if (!didWarnAboutModulePatternComponent[_componentName]) {
+          error('The <%s /> component appears to be a function component that returns a class instance. ' + 'Change %s to a class that extends React.Component instead. ' + "If you can't use a class try assigning the prototype on the function as a workaround. " + "`%s.prototype = React.Component.prototype`. Don't use an arrow function since it " + 'cannot be called with `new` by React.', _componentName, _componentName, _componentName);
+
+          didWarnAboutModulePatternComponent[_componentName] = true;
+        }
+      } // Proceed under the assumption that this is a class instance
+
+
+      workInProgress.tag = ClassComponent; // Throw out any hooks that were used.
+
+      workInProgress.memoizedState = null;
+      workInProgress.updateQueue = null; // Push context providers early to prevent context stack mismatches.
+      // During mounting we don't know the child context yet as the instance doesn't exist.
+      // We will invalidate the child context in finishClassComponent() right after rendering.
+
+      var hasContext = false;
+
+      if (isContextProvider(Component)) {
+        hasContext = true;
+        pushContextProvider(workInProgress);
+      } else {
+        hasContext = false;
+      }
+
+      workInProgress.memoizedState = value.state !== null && value.state !== undefined ? value.state : null;
+      initializeUpdateQueue(workInProgress);
+      var getDerivedStateFromProps = Component.getDerivedStateFromProps;
+
+      if (typeof getDerivedStateFromProps === 'function') {
+        applyDerivedStateFromProps(workInProgress, Component, getDerivedStateFromProps, props);
+      }
+
+      adoptClassInstance(workInProgress, value);
+      mountClassInstance(workInProgress, Component, props, renderExpirationTime);
+      return finishClassComponent(null, workInProgress, Component, true, hasContext, renderExpirationTime);
+    } else {
+      // Proceed under the assumption that this is a function component
+      workInProgress.tag = FunctionComponent;
+
+      {
+
+        if ( workInProgress.mode & StrictMode) {
+          // Only double-render components with Hooks
+          if (workInProgress.memoizedState !== null) {
+            value = renderWithHooks(null, workInProgress, Component, props, context, renderExpirationTime);
+          }
+        }
+      }
+
+      reconcileChildren(null, workInProgress, value, renderExpirationTime);
+
+      {
+        validateFunctionComponentInDev(workInProgress, Component);
+      }
+
+      return workInProgress.child;
+    }
+  }
+
+  function validateFunctionComponentInDev(workInProgress, Component) {
+    {
+      if (Component) {
+        if (Component.childContextTypes) {
+          error('%s(...): childContextTypes cannot be defined on a function component.', Component.displayName || Component.name || 'Component');
+        }
+      }
+
+      if (workInProgress.ref !== null) {
+        var info = '';
+        var ownerName = getCurrentFiberOwnerNameInDevOrNull();
+
+        if (ownerName) {
+          info += '\n\nCheck the render method of `' + ownerName + '`.';
+        }
+
+        var warningKey = ownerName || workInProgress._debugID || '';
+        var debugSource = workInProgress._debugSource;
+
+        if (debugSource) {
+          warningKey = debugSource.fileName + ':' + debugSource.lineNumber;
+        }
+
+        if (!didWarnAboutFunctionRefs[warningKey]) {
+          didWarnAboutFunctionRefs[warningKey] = true;
+
+          error('Function components cannot be given refs. ' + 'Attempts to access this ref will fail. ' + 'Did you mean to use React.forwardRef()?%s', info);
+        }
+      }
+
+      if (typeof Component.getDerivedStateFromProps === 'function') {
+        var _componentName2 = getComponentName(Component) || 'Unknown';
+
+        if (!didWarnAboutGetDerivedStateOnFunctionComponent[_componentName2]) {
+          error('%s: Function components do not support getDerivedStateFromProps.', _componentName2);
+
+          didWarnAboutGetDerivedStateOnFunctionComponent[_componentName2] = true;
+        }
+      }
+
+      if (typeof Component.contextType === 'object' && Component.contextType !== null) {
+        var _componentName3 = getComponentName(Component) || 'Unknown';
+
+        if (!didWarnAboutContextTypeOnFunctionComponent[_componentName3]) {
+          error('%s: Function components do not support contextType.', _componentName3);
+
+          didWarnAboutContextTypeOnFunctionComponent[_componentName3] = true;
+        }
+      }
+    }
+  }
+
+  var SUSPENDED_MARKER = {
+    dehydrated: null,
+    retryTime: NoWork
+  };
+
+  function shouldRemainOnFallback(suspenseContext, current, workInProgress) {
+    // If the context is telling us that we should show a fallback, and we're not
+    // already showing content, then we should show the fallback instead.
+    return hasSuspenseContext(suspenseContext, ForceSuspenseFallback) && (current === null || current.memoizedState !== null);
+  }
+
+  function updateSuspenseComponent(current, workInProgress, renderExpirationTime) {
+    var mode = workInProgress.mode;
+    var nextProps = workInProgress.pendingProps; // This is used by DevTools to force a boundary to suspend.
+
+    {
+      if (shouldSuspend(workInProgress)) {
+        workInProgress.effectTag |= DidCapture;
+      }
+    }
+
+    var suspenseContext = suspenseStackCursor.current;
+    var nextDidTimeout = false;
+    var didSuspend = (workInProgress.effectTag & DidCapture) !== NoEffect;
+
+    if (didSuspend || shouldRemainOnFallback(suspenseContext, current)) {
+      // Something in this boundary's subtree already suspended. Switch to
+      // rendering the fallback children.
+      nextDidTimeout = true;
+      workInProgress.effectTag &= ~DidCapture;
+    } else {
+      // Attempting the main content
+      if (current === null || current.memoizedState !== null) {
+        // This is a new mount or this boundary is already showing a fallback state.
+        // Mark this subtree context as having at least one invisible parent that could
+        // handle the fallback state.
+        // Boundaries without fallbacks or should be avoided are not considered since
+        // they cannot handle preferred fallback states.
+        if (nextProps.fallback !== undefined && nextProps.unstable_avoidThisFallback !== true) {
+          suspenseContext = addSubtreeSuspenseContext(suspenseContext, InvisibleParentSuspenseContext);
+        }
+      }
+    }
+
+    suspenseContext = setDefaultShallowSuspenseContext(suspenseContext);
+    pushSuspenseContext(workInProgress, suspenseContext); // This next part is a bit confusing. If the children timeout, we switch to
+    // showing the fallback children in place of the "primary" children.
+    // However, we don't want to delete the primary children because then their
+    // state will be lost (both the React state and the host state, e.g.
+    // uncontrolled form inputs). Instead we keep them mounted and hide them.
+    // Both the fallback children AND the primary children are rendered at the
+    // same time. Once the primary children are un-suspended, we can delete
+    // the fallback children — don't need to preserve their state.
+    //
+    // The two sets of children are siblings in the host environment, but
+    // semantically, for purposes of reconciliation, they are two separate sets.
+    // So we store them using two fragment fibers.
+    //
+    // However, we want to avoid allocating extra fibers for every placeholder.
+    // They're only necessary when the children time out, because that's the
+    // only time when both sets are mounted.
+    //
+    // So, the extra fragment fibers are only used if the children time out.
+    // Otherwise, we render the primary children directly. This requires some
+    // custom reconciliation logic to preserve the state of the primary
+    // children. It's essentially a very basic form of re-parenting.
+
+    if (current === null) {
+      // If we're currently hydrating, try to hydrate this boundary.
+      // But only if this has a fallback.
+      if (nextProps.fallback !== undefined) {
+        tryToClaimNextHydratableInstance(workInProgress); // This could've been a dehydrated suspense component.
+      } // This is the initial mount. This branch is pretty simple because there's
+      // no previous state that needs to be preserved.
+
+
+      if (nextDidTimeout) {
+        // Mount separate fragments for primary and fallback children.
+        var nextFallbackChildren = nextProps.fallback;
+        var primaryChildFragment = createFiberFromFragment(null, mode, NoWork, null);
+        primaryChildFragment.return = workInProgress;
+
+        if ((workInProgress.mode & BlockingMode) === NoMode) {
+          // Outside of blocking mode, we commit the effects from the
+          // partially completed, timed-out tree, too.
+          var progressedState = workInProgress.memoizedState;
+          var progressedPrimaryChild = progressedState !== null ? workInProgress.child.child : workInProgress.child;
+          primaryChildFragment.child = progressedPrimaryChild;
+          var progressedChild = progressedPrimaryChild;
+
+          while (progressedChild !== null) {
+            progressedChild.return = primaryChildFragment;
+            progressedChild = progressedChild.sibling;
+          }
+        }
+
+        var fallbackChildFragment = createFiberFromFragment(nextFallbackChildren, mode, renderExpirationTime, null);
+        fallbackChildFragment.return = workInProgress;
+        primaryChildFragment.sibling = fallbackChildFragment; // Skip the primary children, and continue working on the
+        // fallback children.
+
+        workInProgress.memoizedState = SUSPENDED_MARKER;
+        workInProgress.child = primaryChildFragment;
+        return fallbackChildFragment;
+      } else {
+        // Mount the primary children without an intermediate fragment fiber.
+        var nextPrimaryChildren = nextProps.children;
+        workInProgress.memoizedState = null;
+        return workInProgress.child = mountChildFibers(workInProgress, null, nextPrimaryChildren, renderExpirationTime);
+      }
+    } else {
+      // This is an update. This branch is more complicated because we need to
+      // ensure the state of the primary children is preserved.
+      var prevState = current.memoizedState;
+
+      if (prevState !== null) {
+        // wrapped in a fragment fiber.
+
+
+        var currentPrimaryChildFragment = current.child;
+        var currentFallbackChildFragment = currentPrimaryChildFragment.sibling;
+
+        if (nextDidTimeout) {
+          // Still timed out. Reuse the current primary children by cloning
+          // its fragment. We're going to skip over these entirely.
+          var _nextFallbackChildren2 = nextProps.fallback;
+
+          var _primaryChildFragment2 = createWorkInProgress(currentPrimaryChildFragment, currentPrimaryChildFragment.pendingProps);
+
+          _primaryChildFragment2.return = workInProgress;
+
+          if ((workInProgress.mode & BlockingMode) === NoMode) {
+            // Outside of blocking mode, we commit the effects from the
+            // partially completed, timed-out tree, too.
+            var _progressedState = workInProgress.memoizedState;
+
+            var _progressedPrimaryChild = _progressedState !== null ? workInProgress.child.child : workInProgress.child;
+
+            if (_progressedPrimaryChild !== currentPrimaryChildFragment.child) {
+              _primaryChildFragment2.child = _progressedPrimaryChild;
+              var _progressedChild2 = _progressedPrimaryChild;
+
+              while (_progressedChild2 !== null) {
+                _progressedChild2.return = _primaryChildFragment2;
+                _progressedChild2 = _progressedChild2.sibling;
+              }
+            }
+          } // Because primaryChildFragment is a new fiber that we're inserting as the
+          // parent of a new tree, we need to set its treeBaseDuration.
+
+
+          if ( workInProgress.mode & ProfileMode) {
+            // treeBaseDuration is the sum of all the child tree base durations.
+            var _treeBaseDuration = 0;
+            var _hiddenChild = _primaryChildFragment2.child;
+
+            while (_hiddenChild !== null) {
+              _treeBaseDuration += _hiddenChild.treeBaseDuration;
+              _hiddenChild = _hiddenChild.sibling;
+            }
+
+            _primaryChildFragment2.treeBaseDuration = _treeBaseDuration;
+          } // Clone the fallback child fragment, too. These we'll continue
+          // working on.
+
+
+          var _fallbackChildFragment2 = createWorkInProgress(currentFallbackChildFragment, _nextFallbackChildren2);
+
+          _fallbackChildFragment2.return = workInProgress;
+          _primaryChildFragment2.sibling = _fallbackChildFragment2;
+          _primaryChildFragment2.childExpirationTime = NoWork; // Skip the primary children, and continue working on the
+          // fallback children.
+
+          workInProgress.memoizedState = SUSPENDED_MARKER;
+          workInProgress.child = _primaryChildFragment2;
+          return _fallbackChildFragment2;
+        } else {
+          // No longer suspended. Switch back to showing the primary children,
+          // and remove the intermediate fragment fiber.
+          var _nextPrimaryChildren = nextProps.children;
+          var currentPrimaryChild = currentPrimaryChildFragment.child;
+          var primaryChild = reconcileChildFibers(workInProgress, currentPrimaryChild, _nextPrimaryChildren, renderExpirationTime); // If this render doesn't suspend, we need to delete the fallback
+          // children. Wait until the complete phase, after we've confirmed the
+          // fallback is no longer needed.
+          // TODO: Would it be better to store the fallback fragment on
+          // the stateNode?
+          // Continue rendering the children, like we normally do.
+
+          workInProgress.memoizedState = null;
+          return workInProgress.child = primaryChild;
+        }
+      } else {
+        // The current tree has not already timed out. That means the primary
+        // children are not wrapped in a fragment fiber.
+        var _currentPrimaryChild = current.child;
+
+        if (nextDidTimeout) {
+          // Timed out. Wrap the children in a fragment fiber to keep them
+          // separate from the fallback children.
+          var _nextFallbackChildren3 = nextProps.fallback;
+
+          var _primaryChildFragment3 = createFiberFromFragment( // It shouldn't matter what the pending props are because we aren't
+          // going to render this fragment.
+          null, mode, NoWork, null);
+
+          _primaryChildFragment3.return = workInProgress;
+          _primaryChildFragment3.child = _currentPrimaryChild;
+
+          if (_currentPrimaryChild !== null) {
+            _currentPrimaryChild.return = _primaryChildFragment3;
+          } // Even though we're creating a new fiber, there are no new children,
+          // because we're reusing an already mounted tree. So we don't need to
+          // schedule a placement.
+          // primaryChildFragment.effectTag |= Placement;
+
+
+          if ((workInProgress.mode & BlockingMode) === NoMode) {
+            // Outside of blocking mode, we commit the effects from the
+            // partially completed, timed-out tree, too.
+            var _progressedState2 = workInProgress.memoizedState;
+
+            var _progressedPrimaryChild2 = _progressedState2 !== null ? workInProgress.child.child : workInProgress.child;
+
+            _primaryChildFragment3.child = _progressedPrimaryChild2;
+            var _progressedChild3 = _progressedPrimaryChild2;
+
+            while (_progressedChild3 !== null) {
+              _progressedChild3.return = _primaryChildFragment3;
+              _progressedChild3 = _progressedChild3.sibling;
+            }
+          } // Because primaryChildFragment is a new fiber that we're inserting as the
+          // parent of a new tree, we need to set its treeBaseDuration.
+
+
+          if ( workInProgress.mode & ProfileMode) {
+            // treeBaseDuration is the sum of all the child tree base durations.
+            var _treeBaseDuration2 = 0;
+            var _hiddenChild2 = _primaryChildFragment3.child;
+
+            while (_hiddenChild2 !== null) {
+              _treeBaseDuration2 += _hiddenChild2.treeBaseDuration;
+              _hiddenChild2 = _hiddenChild2.sibling;
+            }
+
+            _primaryChildFragment3.treeBaseDuration = _treeBaseDuration2;
+          } // Create a fragment from the fallback children, too.
+
+
+          var _fallbackChildFragment3 = createFiberFromFragment(_nextFallbackChildren3, mode, renderExpirationTime, null);
+
+          _fallbackChildFragment3.return = workInProgress;
+          _primaryChildFragment3.sibling = _fallbackChildFragment3;
+          _fallbackChildFragment3.effectTag |= Placement;
+          _primaryChildFragment3.childExpirationTime = NoWork; // Skip the primary children, and continue working on the
+          // fallback children.
+
+          workInProgress.memoizedState = SUSPENDED_MARKER;
+          workInProgress.child = _primaryChildFragment3;
+          return _fallbackChildFragment3;
+        } else {
+          // Still haven't timed out. Continue rendering the children, like we
+          // normally do.
+          workInProgress.memoizedState = null;
+          var _nextPrimaryChildren2 = nextProps.children;
+          return workInProgress.child = reconcileChildFibers(workInProgress, _currentPrimaryChild, _nextPrimaryChildren2, renderExpirationTime);
+        }
+      }
+    }
+  }
+
+  function scheduleWorkOnFiber(fiber, renderExpirationTime) {
+    if (fiber.expirationTime < renderExpirationTime) {
+      fiber.expirationTime = renderExpirationTime;
+    }
+
+    var alternate = fiber.alternate;
+
+    if (alternate !== null && alternate.expirationTime < renderExpirationTime) {
+      alternate.expirationTime = renderExpirationTime;
+    }
+
+    scheduleWorkOnParentPath(fiber.return, renderExpirationTime);
+  }
+
+  function propagateSuspenseContextChange(workInProgress, firstChild, renderExpirationTime) {
+    // Mark any Suspense boundaries with fallbacks as having work to do.
+    // If they were previously forced into fallbacks, they may now be able
+    // to unblock.
+    var node = firstChild;
+
+    while (node !== null) {
+      if (node.tag === SuspenseComponent) {
+        var state = node.memoizedState;
+
+        if (state !== null) {
+          scheduleWorkOnFiber(node, renderExpirationTime);
+        }
+      } else if (node.tag === SuspenseListComponent) {
+        // If the tail is hidden there might not be an Suspense boundaries
+        // to schedule work on. In this case we have to schedule it on the
+        // list itself.
+        // We don't have to traverse to the children of the list since
+        // the list will propagate the change when it rerenders.
+        scheduleWorkOnFiber(node, renderExpirationTime);
+      } else if (node.child !== null) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+
+      if (node === workInProgress) {
+        return;
+      }
+
+      while (node.sibling === null) {
+        if (node.return === null || node.return === workInProgress) {
+          return;
+        }
+
+        node = node.return;
+      }
+
+      node.sibling.return = node.return;
+      node = node.sibling;
+    }
+  }
+
+  function findLastContentRow(firstChild) {
+    // This is going to find the last row among these children that is already
+    // showing content on the screen, as opposed to being in fallback state or
+    // new. If a row has multiple Suspense boundaries, any of them being in the
+    // fallback state, counts as the whole row being in a fallback state.
+    // Note that the "rows" will be workInProgress, but any nested children
+    // will still be current since we haven't rendered them yet. The mounted
+    // order may not be the same as the new order. We use the new order.
+    var row = firstChild;
+    var lastContentRow = null;
+
+    while (row !== null) {
+      var currentRow = row.alternate; // New rows can't be content rows.
+
+      if (currentRow !== null && findFirstSuspended(currentRow) === null) {
+        lastContentRow = row;
+      }
+
+      row = row.sibling;
+    }
+
+    return lastContentRow;
+  }
+
+  function validateRevealOrder(revealOrder) {
+    {
+      if (revealOrder !== undefined && revealOrder !== 'forwards' && revealOrder !== 'backwards' && revealOrder !== 'together' && !didWarnAboutRevealOrder[revealOrder]) {
+        didWarnAboutRevealOrder[revealOrder] = true;
+
+        if (typeof revealOrder === 'string') {
+          switch (revealOrder.toLowerCase()) {
+            case 'together':
+            case 'forwards':
+            case 'backwards':
+              {
+                error('"%s" is not a valid value for revealOrder on <SuspenseList />. ' + 'Use lowercase "%s" instead.', revealOrder, revealOrder.toLowerCase());
+
+                break;
+              }
+
+            case 'forward':
+            case 'backward':
+              {
+                error('"%s" is not a valid value for revealOrder on <SuspenseList />. ' + 'React uses the -s suffix in the spelling. Use "%ss" instead.', revealOrder, revealOrder.toLowerCase());
+
+                break;
+              }
+
+            default:
+              error('"%s" is not a supported revealOrder on <SuspenseList />. ' + 'Did you mean "together", "forwards" or "backwards"?', revealOrder);
+
+              break;
+          }
+        } else {
+          error('%s is not a supported value for revealOrder on <SuspenseList />. ' + 'Did you mean "together", "forwards" or "backwards"?', revealOrder);
+        }
+      }
+    }
+  }
+
+  function validateTailOptions(tailMode, revealOrder) {
+    {
+      if (tailMode !== undefined && !didWarnAboutTailOptions[tailMode]) {
+        if (tailMode !== 'collapsed' && tailMode !== 'hidden') {
+          didWarnAboutTailOptions[tailMode] = true;
+
+          error('"%s" is not a supported value for tail on <SuspenseList />. ' + 'Did you mean "collapsed" or "hidden"?', tailMode);
+        } else if (revealOrder !== 'forwards' && revealOrder !== 'backwards') {
+          didWarnAboutTailOptions[tailMode] = true;
+
+          error('<SuspenseList tail="%s" /> is only valid if revealOrder is ' + '"forwards" or "backwards". ' + 'Did you mean to specify revealOrder="forwards"?', tailMode);
+        }
+      }
+    }
+  }
+
+  function validateSuspenseListNestedChild(childSlot, index) {
+    {
+      var isArray = Array.isArray(childSlot);
+      var isIterable = !isArray && typeof getIteratorFn(childSlot) === 'function';
+
+      if (isArray || isIterable) {
+        var type = isArray ? 'array' : 'iterable';
+
+        error('A nested %s was passed to row #%s in <SuspenseList />. Wrap it in ' + 'an additional SuspenseList to configure its revealOrder: ' + '<SuspenseList revealOrder=...> ... ' + '<SuspenseList revealOrder=...>{%s}</SuspenseList> ... ' + '</SuspenseList>', type, index, type);
+
+        return false;
+      }
+    }
+
+    return true;
+  }
+
+  function validateSuspenseListChildren(children, revealOrder) {
+    {
+      if ((revealOrder === 'forwards' || revealOrder === 'backwards') && children !== undefined && children !== null && children !== false) {
+        if (Array.isArray(children)) {
+          for (var i = 0; i < children.length; i++) {
+            if (!validateSuspenseListNestedChild(children[i], i)) {
+              return;
+            }
+          }
+        } else {
+          var iteratorFn = getIteratorFn(children);
+
+          if (typeof iteratorFn === 'function') {
+            var childrenIterator = iteratorFn.call(children);
+
+            if (childrenIterator) {
+              var step = childrenIterator.next();
+              var _i = 0;
+
+              for (; !step.done; step = childrenIterator.next()) {
+                if (!validateSuspenseListNestedChild(step.value, _i)) {
+                  return;
+                }
+
+                _i++;
+              }
+            }
+          } else {
+            error('A single row was passed to a <SuspenseList revealOrder="%s" />. ' + 'This is not useful since it needs multiple rows. ' + 'Did you mean to pass multiple children or an array?', revealOrder);
+          }
+        }
+      }
+    }
+  }
+
+  function initSuspenseListRenderState(workInProgress, isBackwards, tail, lastContentRow, tailMode, lastEffectBeforeRendering) {
+    var renderState = workInProgress.memoizedState;
+
+    if (renderState === null) {
+      workInProgress.memoizedState = {
+        isBackwards: isBackwards,
+        rendering: null,
+        renderingStartTime: 0,
+        last: lastContentRow,
+        tail: tail,
+        tailExpiration: 0,
+        tailMode: tailMode,
+        lastEffect: lastEffectBeforeRendering
+      };
+    } else {
+      // We can reuse the existing object from previous renders.
+      renderState.isBackwards = isBackwards;
+      renderState.rendering = null;
+      renderState.renderingStartTime = 0;
+      renderState.last = lastContentRow;
+      renderState.tail = tail;
+      renderState.tailExpiration = 0;
+      renderState.tailMode = tailMode;
+      renderState.lastEffect = lastEffectBeforeRendering;
+    }
+  } // This can end up rendering this component multiple passes.
+  // The first pass splits the children fibers into two sets. A head and tail.
+  // We first render the head. If anything is in fallback state, we do another
+  // pass through beginWork to rerender all children (including the tail) with
+  // the force suspend context. If the first render didn't have anything in
+  // in fallback state. Then we render each row in the tail one-by-one.
+  // That happens in the completeWork phase without going back to beginWork.
+
+
+  function updateSuspenseListComponent(current, workInProgress, renderExpirationTime) {
+    var nextProps = workInProgress.pendingProps;
+    var revealOrder = nextProps.revealOrder;
+    var tailMode = nextProps.tail;
+    var newChildren = nextProps.children;
+    validateRevealOrder(revealOrder);
+    validateTailOptions(tailMode, revealOrder);
+    validateSuspenseListChildren(newChildren, revealOrder);
+    reconcileChildren(current, workInProgress, newChildren, renderExpirationTime);
+    var suspenseContext = suspenseStackCursor.current;
+    var shouldForceFallback = hasSuspenseContext(suspenseContext, ForceSuspenseFallback);
+
+    if (shouldForceFallback) {
+      suspenseContext = setShallowSuspenseContext(suspenseContext, ForceSuspenseFallback);
+      workInProgress.effectTag |= DidCapture;
+    } else {
+      var didSuspendBefore = current !== null && (current.effectTag & DidCapture) !== NoEffect;
+
+      if (didSuspendBefore) {
+        // If we previously forced a fallback, we need to schedule work
+        // on any nested boundaries to let them know to try to render
+        // again. This is the same as context updating.
+        propagateSuspenseContextChange(workInProgress, workInProgress.child, renderExpirationTime);
+      }
+
+      suspenseContext = setDefaultShallowSuspenseContext(suspenseContext);
+    }
+
+    pushSuspenseContext(workInProgress, suspenseContext);
+
+    if ((workInProgress.mode & BlockingMode) === NoMode) {
+      // Outside of blocking mode, SuspenseList doesn't work so we just
+      // use make it a noop by treating it as the default revealOrder.
+      workInProgress.memoizedState = null;
+    } else {
+      switch (revealOrder) {
+        case 'forwards':
+          {
+            var lastContentRow = findLastContentRow(workInProgress.child);
+            var tail;
+
+            if (lastContentRow === null) {
+              // The whole list is part of the tail.
+              // TODO: We could fast path by just rendering the tail now.
+              tail = workInProgress.child;
+              workInProgress.child = null;
+            } else {
+              // Disconnect the tail rows after the content row.
+              // We're going to render them separately later.
+              tail = lastContentRow.sibling;
+              lastContentRow.sibling = null;
+            }
+
+            initSuspenseListRenderState(workInProgress, false, // isBackwards
+            tail, lastContentRow, tailMode, workInProgress.lastEffect);
+            break;
+          }
+
+        case 'backwards':
+          {
+            // We're going to find the first row that has existing content.
+            // At the same time we're going to reverse the list of everything
+            // we pass in the meantime. That's going to be our tail in reverse
+            // order.
+            var _tail = null;
+            var row = workInProgress.child;
+            workInProgress.child = null;
+
+            while (row !== null) {
+              var currentRow = row.alternate; // New rows can't be content rows.
+
+              if (currentRow !== null && findFirstSuspended(currentRow) === null) {
+                // This is the beginning of the main content.
+                workInProgress.child = row;
+                break;
+              }
+
+              var nextRow = row.sibling;
+              row.sibling = _tail;
+              _tail = row;
+              row = nextRow;
+            } // TODO: If workInProgress.child is null, we can continue on the tail immediately.
+
+
+            initSuspenseListRenderState(workInProgress, true, // isBackwards
+            _tail, null, // last
+            tailMode, workInProgress.lastEffect);
+            break;
+          }
+
+        case 'together':
+          {
+            initSuspenseListRenderState(workInProgress, false, // isBackwards
+            null, // tail
+            null, // last
+            undefined, workInProgress.lastEffect);
+            break;
+          }
+
+        default:
+          {
+            // The default reveal order is the same as not having
+            // a boundary.
+            workInProgress.memoizedState = null;
+          }
+      }
+    }
+
+    return workInProgress.child;
+  }
+
+  function updatePortalComponent(current, workInProgress, renderExpirationTime) {
+    pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo);
+    var nextChildren = workInProgress.pendingProps;
+
+    if (current === null) {
+      // Portals are special because we don't append the children during mount
+      // but at commit. Therefore we need to track insertions which the normal
+      // flow doesn't do during mount. This doesn't happen at the root because
+      // the root always starts with a "current" with a null child.
+      // TODO: Consider unifying this with how the root works.
+      workInProgress.child = reconcileChildFibers(workInProgress, null, nextChildren, renderExpirationTime);
+    } else {
+      reconcileChildren(current, workInProgress, nextChildren, renderExpirationTime);
+    }
+
+    return workInProgress.child;
+  }
+
+  function updateContextProvider(current, workInProgress, renderExpirationTime) {
+    var providerType = workInProgress.type;
+    var context = providerType._context;
+    var newProps = workInProgress.pendingProps;
+    var oldProps = workInProgress.memoizedProps;
+    var newValue = newProps.value;
+
+    {
+      var providerPropTypes = workInProgress.type.propTypes;
+
+      if (providerPropTypes) {
+        checkPropTypes_1(providerPropTypes, newProps, 'prop', 'Context.Provider', getCurrentFiberStackInDev);
+      }
+    }
+
+    pushProvider(workInProgress, newValue);
+
+    if (oldProps !== null) {
+      var oldValue = oldProps.value;
+      var changedBits = calculateChangedBits(context, newValue, oldValue);
+
+      if (changedBits === 0) {
+        // No change. Bailout early if children are the same.
+        if (oldProps.children === newProps.children && !hasContextChanged()) {
+          return bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+        }
+      } else {
+        // The context value changed. Search for matching consumers and schedule
+        // them to update.
+        propagateContextChange(workInProgress, context, changedBits, renderExpirationTime);
+      }
+    }
+
+    var newChildren = newProps.children;
+    reconcileChildren(current, workInProgress, newChildren, renderExpirationTime);
+    return workInProgress.child;
+  }
+
+  var hasWarnedAboutUsingContextAsConsumer = false;
+
+  function updateContextConsumer(current, workInProgress, renderExpirationTime) {
+    var context = workInProgress.type; // The logic below for Context differs depending on PROD or DEV mode. In
+    // DEV mode, we create a separate object for Context.Consumer that acts
+    // like a proxy to Context. This proxy object adds unnecessary code in PROD
+    // so we use the old behaviour (Context.Consumer references Context) to
+    // reduce size and overhead. The separate object references context via
+    // a property called "_context", which also gives us the ability to check
+    // in DEV mode if this property exists or not and warn if it does not.
+
+    {
+      if (context._context === undefined) {
+        // This may be because it's a Context (rather than a Consumer).
+        // Or it may be because it's older React where they're the same thing.
+        // We only want to warn if we're sure it's a new React.
+        if (context !== context.Consumer) {
+          if (!hasWarnedAboutUsingContextAsConsumer) {
+            hasWarnedAboutUsingContextAsConsumer = true;
+
+            error('Rendering <Context> directly is not supported and will be removed in ' + 'a future major release. Did you mean to render <Context.Consumer> instead?');
+          }
+        }
+      } else {
+        context = context._context;
+      }
+    }
+
+    var newProps = workInProgress.pendingProps;
+    var render = newProps.children;
+
+    {
+      if (typeof render !== 'function') {
+        error('A context consumer was rendered with multiple children, or a child ' + "that isn't a function. A context consumer expects a single child " + 'that is a function. If you did pass a function, make sure there ' + 'is no trailing or leading whitespace around it.');
+      }
+    }
+
+    prepareToReadContext(workInProgress, renderExpirationTime);
+    var newValue = readContext(context, newProps.unstable_observedBits);
+    var newChildren;
+
+    {
+      ReactCurrentOwner$1.current = workInProgress;
+      setIsRendering(true);
+      newChildren = render(newValue);
+      setIsRendering(false);
+    } // React DevTools reads this flag.
+
+
+    workInProgress.effectTag |= PerformedWork;
+    reconcileChildren(current, workInProgress, newChildren, renderExpirationTime);
+    return workInProgress.child;
+  }
+
+  function markWorkInProgressReceivedUpdate() {
+    didReceiveUpdate = true;
+  }
+
+  function bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime) {
+    cancelWorkTimer(workInProgress);
+
+    if (current !== null) {
+      // Reuse previous dependencies
+      workInProgress.dependencies = current.dependencies;
+    }
+
+    {
+      // Don't update "base" render times for bailouts.
+      stopProfilerTimerIfRunning();
+    }
+
+    var updateExpirationTime = workInProgress.expirationTime;
+
+    if (updateExpirationTime !== NoWork) {
+      markUnprocessedUpdateTime(updateExpirationTime);
+    } // Check if the children have any pending work.
+
+
+    var childExpirationTime = workInProgress.childExpirationTime;
+
+    if (childExpirationTime < renderExpirationTime) {
+      // The children don't have any work either. We can skip them.
+      // TODO: Once we add back resuming, we should check if the children are
+      // a work-in-progress set. If so, we need to transfer their effects.
+      return null;
+    } else {
+      // This fiber doesn't have work, but its subtree does. Clone the child
+      // fibers and continue.
+      cloneChildFibers(current, workInProgress);
+      return workInProgress.child;
+    }
+  }
+
+  function remountFiber(current, oldWorkInProgress, newWorkInProgress) {
+    {
+      var returnFiber = oldWorkInProgress.return;
+
+      if (returnFiber === null) {
+        throw new Error('Cannot swap the root fiber.');
+      } // Disconnect from the old current.
+      // It will get deleted.
+
+
+      current.alternate = null;
+      oldWorkInProgress.alternate = null; // Connect to the new tree.
+
+      newWorkInProgress.index = oldWorkInProgress.index;
+      newWorkInProgress.sibling = oldWorkInProgress.sibling;
+      newWorkInProgress.return = oldWorkInProgress.return;
+      newWorkInProgress.ref = oldWorkInProgress.ref; // Replace the child/sibling pointers above it.
+
+      if (oldWorkInProgress === returnFiber.child) {
+        returnFiber.child = newWorkInProgress;
+      } else {
+        var prevSibling = returnFiber.child;
+
+        if (prevSibling === null) {
+          throw new Error('Expected parent to have a child.');
+        }
+
+        while (prevSibling.sibling !== oldWorkInProgress) {
+          prevSibling = prevSibling.sibling;
+
+          if (prevSibling === null) {
+            throw new Error('Expected to find the previous sibling.');
+          }
+        }
+
+        prevSibling.sibling = newWorkInProgress;
+      } // Delete the old fiber and place the new one.
+      // Since the old fiber is disconnected, we have to schedule it manually.
+
+
+      var last = returnFiber.lastEffect;
+
+      if (last !== null) {
+        last.nextEffect = current;
+        returnFiber.lastEffect = current;
+      } else {
+        returnFiber.firstEffect = returnFiber.lastEffect = current;
+      }
+
+      current.nextEffect = null;
+      current.effectTag = Deletion;
+      newWorkInProgress.effectTag |= Placement; // Restart work from the new fiber.
+
+      return newWorkInProgress;
+    }
+  }
+
+  function beginWork(current, workInProgress, renderExpirationTime) {
+    var updateExpirationTime = workInProgress.expirationTime;
+
+    {
+      if (workInProgress._debugNeedsRemount && current !== null) {
+        // This will restart the begin phase with a new fiber.
+        return remountFiber(current, workInProgress, createFiberFromTypeAndProps(workInProgress.type, workInProgress.key, workInProgress.pendingProps, workInProgress._debugOwner || null, workInProgress.mode, workInProgress.expirationTime));
+      }
+    }
+
+    if (current !== null) {
+      var oldProps = current.memoizedProps;
+      var newProps = workInProgress.pendingProps;
+
+      if (oldProps !== newProps || hasContextChanged() || ( // Force a re-render if the implementation changed due to hot reload:
+       workInProgress.type !== current.type )) {
+        // If props or context changed, mark the fiber as having performed work.
+        // This may be unset if the props are determined to be equal later (memo).
+        didReceiveUpdate = true;
+      } else if (updateExpirationTime < renderExpirationTime) {
+        didReceiveUpdate = false; // This fiber does not have any pending work. Bailout without entering
+        // the begin phase. There's still some bookkeeping we that needs to be done
+        // in this optimized path, mostly pushing stuff onto the stack.
+
+        switch (workInProgress.tag) {
+          case HostRoot:
+            pushHostRootContext(workInProgress);
+            resetHydrationState();
+            break;
+
+          case HostComponent:
+            pushHostContext(workInProgress);
+
+            if (workInProgress.mode & ConcurrentMode && renderExpirationTime !== Never && shouldDeprioritizeSubtree(workInProgress.type, newProps)) {
+              {
+                markSpawnedWork(Never);
+              } // Schedule this fiber to re-render at offscreen priority. Then bailout.
+
+
+              workInProgress.expirationTime = workInProgress.childExpirationTime = Never;
+              return null;
+            }
+
+            break;
+
+          case ClassComponent:
+            {
+              var Component = workInProgress.type;
+
+              if (isContextProvider(Component)) {
+                pushContextProvider(workInProgress);
+              }
+
+              break;
+            }
+
+          case HostPortal:
+            pushHostContainer(workInProgress, workInProgress.stateNode.containerInfo);
+            break;
+
+          case ContextProvider:
+            {
+              var newValue = workInProgress.memoizedProps.value;
+              pushProvider(workInProgress, newValue);
+              break;
+            }
+
+          case Profiler:
+            {
+              // Profiler should only call onRender when one of its descendants actually rendered.
+              var hasChildWork = workInProgress.childExpirationTime >= renderExpirationTime;
+
+              if (hasChildWork) {
+                workInProgress.effectTag |= Update;
+              }
+            }
+
+            break;
+
+          case SuspenseComponent:
+            {
+              var state = workInProgress.memoizedState;
+
+              if (state !== null) {
+                // whether to retry the primary children, or to skip over it and
+                // go straight to the fallback. Check the priority of the primary
+                // child fragment.
+
+
+                var primaryChildFragment = workInProgress.child;
+                var primaryChildExpirationTime = primaryChildFragment.childExpirationTime;
+
+                if (primaryChildExpirationTime !== NoWork && primaryChildExpirationTime >= renderExpirationTime) {
+                  // The primary children have pending work. Use the normal path
+                  // to attempt to render the primary children again.
+                  return updateSuspenseComponent(current, workInProgress, renderExpirationTime);
+                } else {
+                  pushSuspenseContext(workInProgress, setDefaultShallowSuspenseContext(suspenseStackCursor.current)); // The primary children do not have pending work with sufficient
+                  // priority. Bailout.
+
+                  var child = bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+
+                  if (child !== null) {
+                    // The fallback children have pending work. Skip over the
+                    // primary children and work on the fallback.
+                    return child.sibling;
+                  } else {
+                    return null;
+                  }
+                }
+              } else {
+                pushSuspenseContext(workInProgress, setDefaultShallowSuspenseContext(suspenseStackCursor.current));
+              }
+
+              break;
+            }
+
+          case SuspenseListComponent:
+            {
+              var didSuspendBefore = (current.effectTag & DidCapture) !== NoEffect;
+
+              var _hasChildWork = workInProgress.childExpirationTime >= renderExpirationTime;
+
+              if (didSuspendBefore) {
+                if (_hasChildWork) {
+                  // If something was in fallback state last time, and we have all the
+                  // same children then we're still in progressive loading state.
+                  // Something might get unblocked by state updates or retries in the
+                  // tree which will affect the tail. So we need to use the normal
+                  // path to compute the correct tail.
+                  return updateSuspenseListComponent(current, workInProgress, renderExpirationTime);
+                } // If none of the children had any work, that means that none of
+                // them got retried so they'll still be blocked in the same way
+                // as before. We can fast bail out.
+
+
+                workInProgress.effectTag |= DidCapture;
+              } // If nothing suspended before and we're rendering the same children,
+              // then the tail doesn't matter. Anything new that suspends will work
+              // in the "together" mode, so we can continue from the state we had.
+
+
+              var renderState = workInProgress.memoizedState;
+
+              if (renderState !== null) {
+                // Reset to the "together" mode in case we've started a different
+                // update in the past but didn't complete it.
+                renderState.rendering = null;
+                renderState.tail = null;
+              }
+
+              pushSuspenseContext(workInProgress, suspenseStackCursor.current);
+
+              if (_hasChildWork) {
+                break;
+              } else {
+                // If none of the children had any work, that means that none of
+                // them got retried so they'll still be blocked in the same way
+                // as before. We can fast bail out.
+                return null;
+              }
+            }
+        }
+
+        return bailoutOnAlreadyFinishedWork(current, workInProgress, renderExpirationTime);
+      } else {
+        // An update was scheduled on this fiber, but there are no new props
+        // nor legacy context. Set this to false. If an update queue or context
+        // consumer produces a changed value, it will set this to true. Otherwise,
+        // the component will assume the children have not changed and bail out.
+        didReceiveUpdate = false;
+      }
+    } else {
+      didReceiveUpdate = false;
+    } // Before entering the begin phase, clear pending update priority.
+    // TODO: This assumes that we're about to evaluate the component and process
+    // the update queue. However, there's an exception: SimpleMemoComponent
+    // sometimes bails out later in the begin phase. This indicates that we should
+    // move this assignment out of the common path and into each branch.
+
+
+    workInProgress.expirationTime = NoWork;
+
+    switch (workInProgress.tag) {
+      case IndeterminateComponent:
+        {
+          return mountIndeterminateComponent(current, workInProgress, workInProgress.type, renderExpirationTime);
+        }
+
+      case LazyComponent:
+        {
+          var elementType = workInProgress.elementType;
+          return mountLazyComponent(current, workInProgress, elementType, updateExpirationTime, renderExpirationTime);
+        }
+
+      case FunctionComponent:
+        {
+          var _Component = workInProgress.type;
+          var unresolvedProps = workInProgress.pendingProps;
+          var resolvedProps = workInProgress.elementType === _Component ? unresolvedProps : resolveDefaultProps(_Component, unresolvedProps);
+          return updateFunctionComponent(current, workInProgress, _Component, resolvedProps, renderExpirationTime);
+        }
+
+      case ClassComponent:
+        {
+          var _Component2 = workInProgress.type;
+          var _unresolvedProps = workInProgress.pendingProps;
+
+          var _resolvedProps = workInProgress.elementType === _Component2 ? _unresolvedProps : resolveDefaultProps(_Component2, _unresolvedProps);
+
+          return updateClassComponent(current, workInProgress, _Component2, _resolvedProps, renderExpirationTime);
+        }
+
+      case HostRoot:
+        return updateHostRoot(current, workInProgress, renderExpirationTime);
+
+      case HostComponent:
+        return updateHostComponent(current, workInProgress, renderExpirationTime);
+
+      case HostText:
+        return updateHostText(current, workInProgress);
+
+      case SuspenseComponent:
+        return updateSuspenseComponent(current, workInProgress, renderExpirationTime);
+
+      case HostPortal:
+        return updatePortalComponent(current, workInProgress, renderExpirationTime);
+
+      case ForwardRef:
+        {
+          var type = workInProgress.type;
+          var _unresolvedProps2 = workInProgress.pendingProps;
+
+          var _resolvedProps2 = workInProgress.elementType === type ? _unresolvedProps2 : resolveDefaultProps(type, _unresolvedProps2);
+
+          return updateForwardRef(current, workInProgress, type, _resolvedProps2, renderExpirationTime);
+        }
+
+      case Fragment:
+        return updateFragment(current, workInProgress, renderExpirationTime);
+
+      case Mode:
+        return updateMode(current, workInProgress, renderExpirationTime);
+
+      case Profiler:
+        return updateProfiler(current, workInProgress, renderExpirationTime);
+
+      case ContextProvider:
+        return updateContextProvider(current, workInProgress, renderExpirationTime);
+
+      case ContextConsumer:
+        return updateContextConsumer(current, workInProgress, renderExpirationTime);
+
+      case MemoComponent:
+        {
+          var _type2 = workInProgress.type;
+          var _unresolvedProps3 = workInProgress.pendingProps; // Resolve outer props first, then resolve inner props.
+
+          var _resolvedProps3 = resolveDefaultProps(_type2, _unresolvedProps3);
+
+          {
+            if (workInProgress.type !== workInProgress.elementType) {
+              var outerPropTypes = _type2.propTypes;
+
+              if (outerPropTypes) {
+                checkPropTypes_1(outerPropTypes, _resolvedProps3, // Resolved for outer only
+                'prop', getComponentName(_type2), getCurrentFiberStackInDev);
+              }
+            }
+          }
+
+          _resolvedProps3 = resolveDefaultProps(_type2.type, _resolvedProps3);
+          return updateMemoComponent(current, workInProgress, _type2, _resolvedProps3, updateExpirationTime, renderExpirationTime);
+        }
+
+      case SimpleMemoComponent:
+        {
+          return updateSimpleMemoComponent(current, workInProgress, workInProgress.type, workInProgress.pendingProps, updateExpirationTime, renderExpirationTime);
+        }
+
+      case IncompleteClassComponent:
+        {
+          var _Component3 = workInProgress.type;
+          var _unresolvedProps4 = workInProgress.pendingProps;
+
+          var _resolvedProps4 = workInProgress.elementType === _Component3 ? _unresolvedProps4 : resolveDefaultProps(_Component3, _unresolvedProps4);
+
+          return mountIncompleteClassComponent(current, workInProgress, _Component3, _resolvedProps4, renderExpirationTime);
+        }
+
+      case SuspenseListComponent:
+        {
+          return updateSuspenseListComponent(current, workInProgress, renderExpirationTime);
+        }
+    }
+
+    {
+      {
+        throw Error( "Unknown unit of work tag (" + workInProgress.tag + "). This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+  }
+
+  function markUpdate(workInProgress) {
+    // Tag the fiber with an update effect. This turns a Placement into
+    // a PlacementAndUpdate.
+    workInProgress.effectTag |= Update;
+  }
+
+  function markRef$1(workInProgress) {
+    workInProgress.effectTag |= Ref;
+  }
+
+  var appendAllChildren;
+  var updateHostContainer;
+  var updateHostComponent$1;
+  var updateHostText$1;
+
+  {
+    // Mutation mode
+    appendAllChildren = function (parent, workInProgress, needsVisibilityToggle, isHidden) {
+      // We only have the top Fiber that was created but we need recurse down its
+      // children to find all the terminal nodes.
+      var node = workInProgress.child;
+
+      while (node !== null) {
+        if (node.tag === HostComponent || node.tag === HostText) {
+          appendInitialChild(parent, node.stateNode);
+        } else if (node.tag === HostPortal) ; else if (node.child !== null) {
+          node.child.return = node;
+          node = node.child;
+          continue;
+        }
+
+        if (node === workInProgress) {
+          return;
+        }
+
+        while (node.sibling === null) {
+          if (node.return === null || node.return === workInProgress) {
+            return;
+          }
+
+          node = node.return;
+        }
+
+        node.sibling.return = node.return;
+        node = node.sibling;
+      }
+    };
+
+    updateHostContainer = function (workInProgress) {// Noop
+    };
+
+    updateHostComponent$1 = function (current, workInProgress, type, newProps, rootContainerInstance) {
+      // If we have an alternate, that means this is an update and we need to
+      // schedule a side-effect to do the updates.
+      var oldProps = current.memoizedProps;
+
+      if (oldProps === newProps) {
+        // In mutation mode, this is sufficient for a bailout because
+        // we won't touch this node even if children changed.
+        return;
+      } // If we get updated because one of our children updated, we don't
+      // have newProps so we'll have to reuse them.
+      // TODO: Split the update API as separate for the props vs. children.
+      // Even better would be if children weren't special cased at all tho.
+
+
+      var instance = workInProgress.stateNode;
+      var currentHostContext = getHostContext(); // TODO: Experiencing an error where oldProps is null. Suggests a host
+      // component is hitting the resume path. Figure out why. Possibly
+      // related to `hidden`.
+
+      var updatePayload = prepareUpdate(instance, type, oldProps, newProps, rootContainerInstance, currentHostContext); // TODO: Type this specific to this type of component.
+
+      workInProgress.updateQueue = updatePayload; // If the update payload indicates that there is a change or if there
+      // is a new ref we mark this as an update. All the work is done in commitWork.
+
+      if (updatePayload) {
+        markUpdate(workInProgress);
+      }
+    };
+
+    updateHostText$1 = function (current, workInProgress, oldText, newText) {
+      // If the text differs, mark it as an update. All the work in done in commitWork.
+      if (oldText !== newText) {
+        markUpdate(workInProgress);
+      }
+    };
+  }
+
+  function cutOffTailIfNeeded(renderState, hasRenderedATailFallback) {
+    switch (renderState.tailMode) {
+      case 'hidden':
+        {
+          // Any insertions at the end of the tail list after this point
+          // should be invisible. If there are already mounted boundaries
+          // anything before them are not considered for collapsing.
+          // Therefore we need to go through the whole tail to find if
+          // there are any.
+          var tailNode = renderState.tail;
+          var lastTailNode = null;
+
+          while (tailNode !== null) {
+            if (tailNode.alternate !== null) {
+              lastTailNode = tailNode;
+            }
+
+            tailNode = tailNode.sibling;
+          } // Next we're simply going to delete all insertions after the
+          // last rendered item.
+
+
+          if (lastTailNode === null) {
+            // All remaining items in the tail are insertions.
+            renderState.tail = null;
+          } else {
+            // Detach the insertion after the last node that was already
+            // inserted.
+            lastTailNode.sibling = null;
+          }
+
+          break;
+        }
+
+      case 'collapsed':
+        {
+          // Any insertions at the end of the tail list after this point
+          // should be invisible. If there are already mounted boundaries
+          // anything before them are not considered for collapsing.
+          // Therefore we need to go through the whole tail to find if
+          // there are any.
+          var _tailNode = renderState.tail;
+          var _lastTailNode = null;
+
+          while (_tailNode !== null) {
+            if (_tailNode.alternate !== null) {
+              _lastTailNode = _tailNode;
+            }
+
+            _tailNode = _tailNode.sibling;
+          } // Next we're simply going to delete all insertions after the
+          // last rendered item.
+
+
+          if (_lastTailNode === null) {
+            // All remaining items in the tail are insertions.
+            if (!hasRenderedATailFallback && renderState.tail !== null) {
+              // We suspended during the head. We want to show at least one
+              // row at the tail. So we'll keep on and cut off the rest.
+              renderState.tail.sibling = null;
+            } else {
+              renderState.tail = null;
+            }
+          } else {
+            // Detach the insertion after the last node that was already
+            // inserted.
+            _lastTailNode.sibling = null;
+          }
+
+          break;
+        }
+    }
+  }
+
+  function completeWork(current, workInProgress, renderExpirationTime) {
+    var newProps = workInProgress.pendingProps;
+
+    switch (workInProgress.tag) {
+      case IndeterminateComponent:
+      case LazyComponent:
+      case SimpleMemoComponent:
+      case FunctionComponent:
+      case ForwardRef:
+      case Fragment:
+      case Mode:
+      case Profiler:
+      case ContextConsumer:
+      case MemoComponent:
+        return null;
+
+      case ClassComponent:
+        {
+          var Component = workInProgress.type;
+
+          if (isContextProvider(Component)) {
+            popContext(workInProgress);
+          }
+
+          return null;
+        }
+
+      case HostRoot:
+        {
+          popHostContainer(workInProgress);
+          popTopLevelContextObject(workInProgress);
+          var fiberRoot = workInProgress.stateNode;
+
+          if (fiberRoot.pendingContext) {
+            fiberRoot.context = fiberRoot.pendingContext;
+            fiberRoot.pendingContext = null;
+          }
+
+          if (current === null || current.child === null) {
+            // If we hydrated, pop so that we can delete any remaining children
+            // that weren't hydrated.
+            var wasHydrated = popHydrationState(workInProgress);
+
+            if (wasHydrated) {
+              // If we hydrated, then we'll need to schedule an update for
+              // the commit side-effects on the root.
+              markUpdate(workInProgress);
+            }
+          }
+
+          updateHostContainer(workInProgress);
+          return null;
+        }
+
+      case HostComponent:
+        {
+          popHostContext(workInProgress);
+          var rootContainerInstance = getRootHostContainer();
+          var type = workInProgress.type;
+
+          if (current !== null && workInProgress.stateNode != null) {
+            updateHostComponent$1(current, workInProgress, type, newProps, rootContainerInstance);
+
+            if (current.ref !== workInProgress.ref) {
+              markRef$1(workInProgress);
+            }
+          } else {
+            if (!newProps) {
+              if (!(workInProgress.stateNode !== null)) {
+                {
+                  throw Error( "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue." );
+                }
+              } // This can happen when we abort work.
+
+
+              return null;
+            }
+
+            var currentHostContext = getHostContext(); // TODO: Move createInstance to beginWork and keep it on a context
+            // "stack" as the parent. Then append children as we go in beginWork
+            // or completeWork depending on whether we want to add them top->down or
+            // bottom->up. Top->down is faster in IE11.
+
+            var _wasHydrated = popHydrationState(workInProgress);
+
+            if (_wasHydrated) {
+              // TODO: Move this and createInstance step into the beginPhase
+              // to consolidate.
+              if (prepareToHydrateHostInstance(workInProgress, rootContainerInstance, currentHostContext)) {
+                // If changes to the hydrated node need to be applied at the
+                // commit-phase we mark this as such.
+                markUpdate(workInProgress);
+              }
+            } else {
+              var instance = createInstance(type, newProps, rootContainerInstance, currentHostContext, workInProgress);
+              appendAllChildren(instance, workInProgress, false, false); // This needs to be set before we mount Flare event listeners
+
+              workInProgress.stateNode = instance;
+              // (eg DOM renderer supports auto-focus for certain elements).
+              // Make sure such renderers get scheduled for later work.
+
+
+              if (finalizeInitialChildren(instance, type, newProps, rootContainerInstance)) {
+                markUpdate(workInProgress);
+              }
+            }
+
+            if (workInProgress.ref !== null) {
+              // If there is a ref on a host node we need to schedule a callback
+              markRef$1(workInProgress);
+            }
+          }
+
+          return null;
+        }
+
+      case HostText:
+        {
+          var newText = newProps;
+
+          if (current && workInProgress.stateNode != null) {
+            var oldText = current.memoizedProps; // If we have an alternate, that means this is an update and we need
+            // to schedule a side-effect to do the updates.
+
+            updateHostText$1(current, workInProgress, oldText, newText);
+          } else {
+            if (typeof newText !== 'string') {
+              if (!(workInProgress.stateNode !== null)) {
+                {
+                  throw Error( "We must have new props for new mounts. This error is likely caused by a bug in React. Please file an issue." );
+                }
+              } // This can happen when we abort work.
+
+            }
+
+            var _rootContainerInstance = getRootHostContainer();
+
+            var _currentHostContext = getHostContext();
+
+            var _wasHydrated2 = popHydrationState(workInProgress);
+
+            if (_wasHydrated2) {
+              if (prepareToHydrateHostTextInstance(workInProgress)) {
+                markUpdate(workInProgress);
+              }
+            } else {
+              workInProgress.stateNode = createTextInstance(newText, _rootContainerInstance, _currentHostContext, workInProgress);
+            }
+          }
+
+          return null;
+        }
+
+      case SuspenseComponent:
+        {
+          popSuspenseContext(workInProgress);
+          var nextState = workInProgress.memoizedState;
+
+          if ((workInProgress.effectTag & DidCapture) !== NoEffect) {
+            // Something suspended. Re-render with the fallback children.
+            workInProgress.expirationTime = renderExpirationTime; // Do not reset the effect list.
+
+            return workInProgress;
+          }
+
+          var nextDidTimeout = nextState !== null;
+          var prevDidTimeout = false;
+
+          if (current === null) {
+            if (workInProgress.memoizedProps.fallback !== undefined) {
+              popHydrationState(workInProgress);
+            }
+          } else {
+            var prevState = current.memoizedState;
+            prevDidTimeout = prevState !== null;
+
+            if (!nextDidTimeout && prevState !== null) {
+              // We just switched from the fallback to the normal children.
+              // Delete the fallback.
+              // TODO: Would it be better to store the fallback fragment on
+              // the stateNode during the begin phase?
+              var currentFallbackChild = current.child.sibling;
+
+              if (currentFallbackChild !== null) {
+                // Deletions go at the beginning of the return fiber's effect list
+                var first = workInProgress.firstEffect;
+
+                if (first !== null) {
+                  workInProgress.firstEffect = currentFallbackChild;
+                  currentFallbackChild.nextEffect = first;
+                } else {
+                  workInProgress.firstEffect = workInProgress.lastEffect = currentFallbackChild;
+                  currentFallbackChild.nextEffect = null;
+                }
+
+                currentFallbackChild.effectTag = Deletion;
+              }
+            }
+          }
+
+          if (nextDidTimeout && !prevDidTimeout) {
+            // If this subtreee is running in blocking mode we can suspend,
+            // otherwise we won't suspend.
+            // TODO: This will still suspend a synchronous tree if anything
+            // in the concurrent tree already suspended during this render.
+            // This is a known bug.
+            if ((workInProgress.mode & BlockingMode) !== NoMode) {
+              // TODO: Move this back to throwException because this is too late
+              // if this is a large tree which is common for initial loads. We
+              // don't know if we should restart a render or not until we get
+              // this marker, and this is too late.
+              // If this render already had a ping or lower pri updates,
+              // and this is the first time we know we're going to suspend we
+              // should be able to immediately restart from within throwException.
+              var hasInvisibleChildContext = current === null && workInProgress.memoizedProps.unstable_avoidThisFallback !== true;
+
+              if (hasInvisibleChildContext || hasSuspenseContext(suspenseStackCursor.current, InvisibleParentSuspenseContext)) {
+                // If this was in an invisible tree or a new render, then showing
+                // this boundary is ok.
+                renderDidSuspend();
+              } else {
+                // Otherwise, we're going to have to hide content so we should
+                // suspend for longer if possible.
+                renderDidSuspendDelayIfPossible();
+              }
+            }
+          }
+
+          {
+            // TODO: Only schedule updates if these values are non equal, i.e. it changed.
+            if (nextDidTimeout || prevDidTimeout) {
+              // If this boundary just timed out, schedule an effect to attach a
+              // retry listener to the promise. This flag is also used to hide the
+              // primary children. In mutation mode, we also need the flag to
+              // *unhide* children that were previously hidden, so check if this
+              // is currently timed out, too.
+              workInProgress.effectTag |= Update;
+            }
+          }
+
+          return null;
+        }
+
+      case HostPortal:
+        popHostContainer(workInProgress);
+        updateHostContainer(workInProgress);
+        return null;
+
+      case ContextProvider:
+        // Pop provider fiber
+        popProvider(workInProgress);
+        return null;
+
+      case IncompleteClassComponent:
+        {
+          // Same as class component case. I put it down here so that the tags are
+          // sequential to ensure this switch is compiled to a jump table.
+          var _Component = workInProgress.type;
+
+          if (isContextProvider(_Component)) {
+            popContext(workInProgress);
+          }
+
+          return null;
+        }
+
+      case SuspenseListComponent:
+        {
+          popSuspenseContext(workInProgress);
+          var renderState = workInProgress.memoizedState;
+
+          if (renderState === null) {
+            // We're running in the default, "independent" mode.
+            // We don't do anything in this mode.
+            return null;
+          }
+
+          var didSuspendAlready = (workInProgress.effectTag & DidCapture) !== NoEffect;
+          var renderedTail = renderState.rendering;
+
+          if (renderedTail === null) {
+            // We just rendered the head.
+            if (!didSuspendAlready) {
+              // This is the first pass. We need to figure out if anything is still
+              // suspended in the rendered set.
+              // If new content unsuspended, but there's still some content that
+              // didn't. Then we need to do a second pass that forces everything
+              // to keep showing their fallbacks.
+              // We might be suspended if something in this render pass suspended, or
+              // something in the previous committed pass suspended. Otherwise,
+              // there's no chance so we can skip the expensive call to
+              // findFirstSuspended.
+              var cannotBeSuspended = renderHasNotSuspendedYet() && (current === null || (current.effectTag & DidCapture) === NoEffect);
+
+              if (!cannotBeSuspended) {
+                var row = workInProgress.child;
+
+                while (row !== null) {
+                  var suspended = findFirstSuspended(row);
+
+                  if (suspended !== null) {
+                    didSuspendAlready = true;
+                    workInProgress.effectTag |= DidCapture;
+                    cutOffTailIfNeeded(renderState, false); // If this is a newly suspended tree, it might not get committed as
+                    // part of the second pass. In that case nothing will subscribe to
+                    // its thennables. Instead, we'll transfer its thennables to the
+                    // SuspenseList so that it can retry if they resolve.
+                    // There might be multiple of these in the list but since we're
+                    // going to wait for all of them anyway, it doesn't really matter
+                    // which ones gets to ping. In theory we could get clever and keep
+                    // track of how many dependencies remain but it gets tricky because
+                    // in the meantime, we can add/remove/change items and dependencies.
+                    // We might bail out of the loop before finding any but that
+                    // doesn't matter since that means that the other boundaries that
+                    // we did find already has their listeners attached.
+
+                    var newThennables = suspended.updateQueue;
+
+                    if (newThennables !== null) {
+                      workInProgress.updateQueue = newThennables;
+                      workInProgress.effectTag |= Update;
+                    } // Rerender the whole list, but this time, we'll force fallbacks
+                    // to stay in place.
+                    // Reset the effect list before doing the second pass since that's now invalid.
+
+
+                    if (renderState.lastEffect === null) {
+                      workInProgress.firstEffect = null;
+                    }
+
+                    workInProgress.lastEffect = renderState.lastEffect; // Reset the child fibers to their original state.
+
+                    resetChildFibers(workInProgress, renderExpirationTime); // Set up the Suspense Context to force suspense and immediately
+                    // rerender the children.
+
+                    pushSuspenseContext(workInProgress, setShallowSuspenseContext(suspenseStackCursor.current, ForceSuspenseFallback));
+                    return workInProgress.child;
+                  }
+
+                  row = row.sibling;
+                }
+              }
+            } else {
+              cutOffTailIfNeeded(renderState, false);
+            } // Next we're going to render the tail.
+
+          } else {
+            // Append the rendered row to the child list.
+            if (!didSuspendAlready) {
+              var _suspended = findFirstSuspended(renderedTail);
+
+              if (_suspended !== null) {
+                workInProgress.effectTag |= DidCapture;
+                didSuspendAlready = true; // Ensure we transfer the update queue to the parent so that it doesn't
+                // get lost if this row ends up dropped during a second pass.
+
+                var _newThennables = _suspended.updateQueue;
+
+                if (_newThennables !== null) {
+                  workInProgress.updateQueue = _newThennables;
+                  workInProgress.effectTag |= Update;
+                }
+
+                cutOffTailIfNeeded(renderState, true); // This might have been modified.
+
+                if (renderState.tail === null && renderState.tailMode === 'hidden' && !renderedTail.alternate) {
+                  // We need to delete the row we just rendered.
+                  // Reset the effect list to what it was before we rendered this
+                  // child. The nested children have already appended themselves.
+                  var lastEffect = workInProgress.lastEffect = renderState.lastEffect; // Remove any effects that were appended after this point.
+
+                  if (lastEffect !== null) {
+                    lastEffect.nextEffect = null;
+                  } // We're done.
+
+
+                  return null;
+                }
+              } else if ( // The time it took to render last row is greater than time until
+              // the expiration.
+              now() * 2 - renderState.renderingStartTime > renderState.tailExpiration && renderExpirationTime > Never) {
+                // We have now passed our CPU deadline and we'll just give up further
+                // attempts to render the main content and only render fallbacks.
+                // The assumption is that this is usually faster.
+                workInProgress.effectTag |= DidCapture;
+                didSuspendAlready = true;
+                cutOffTailIfNeeded(renderState, false); // Since nothing actually suspended, there will nothing to ping this
+                // to get it started back up to attempt the next item. If we can show
+                // them, then they really have the same priority as this render.
+                // So we'll pick it back up the very next render pass once we've had
+                // an opportunity to yield for paint.
+
+                var nextPriority = renderExpirationTime - 1;
+                workInProgress.expirationTime = workInProgress.childExpirationTime = nextPriority;
+
+                {
+                  markSpawnedWork(nextPriority);
+                }
+              }
+            }
+
+            if (renderState.isBackwards) {
+              // The effect list of the backwards tail will have been added
+              // to the end. This breaks the guarantee that life-cycles fire in
+              // sibling order but that isn't a strong guarantee promised by React.
+              // Especially since these might also just pop in during future commits.
+              // Append to the beginning of the list.
+              renderedTail.sibling = workInProgress.child;
+              workInProgress.child = renderedTail;
+            } else {
+              var previousSibling = renderState.last;
+
+              if (previousSibling !== null) {
+                previousSibling.sibling = renderedTail;
+              } else {
+                workInProgress.child = renderedTail;
+              }
+
+              renderState.last = renderedTail;
+            }
+          }
+
+          if (renderState.tail !== null) {
+            // We still have tail rows to render.
+            if (renderState.tailExpiration === 0) {
+              // Heuristic for how long we're willing to spend rendering rows
+              // until we just give up and show what we have so far.
+              var TAIL_EXPIRATION_TIMEOUT_MS = 500;
+              renderState.tailExpiration = now() + TAIL_EXPIRATION_TIMEOUT_MS; // TODO: This is meant to mimic the train model or JND but this
+              // is a per component value. It should really be since the start
+              // of the total render or last commit. Consider using something like
+              // globalMostRecentFallbackTime. That doesn't account for being
+              // suspended for part of the time or when it's a new render.
+              // It should probably use a global start time value instead.
+            } // Pop a row.
+
+
+            var next = renderState.tail;
+            renderState.rendering = next;
+            renderState.tail = next.sibling;
+            renderState.lastEffect = workInProgress.lastEffect;
+            renderState.renderingStartTime = now();
+            next.sibling = null; // Restore the context.
+            // TODO: We can probably just avoid popping it instead and only
+            // setting it the first time we go from not suspended to suspended.
+
+            var suspenseContext = suspenseStackCursor.current;
+
+            if (didSuspendAlready) {
+              suspenseContext = setShallowSuspenseContext(suspenseContext, ForceSuspenseFallback);
+            } else {
+              suspenseContext = setDefaultShallowSuspenseContext(suspenseContext);
+            }
+
+            pushSuspenseContext(workInProgress, suspenseContext); // Do a pass over the next row.
+
+            return next;
+          }
+
+          return null;
+        }
+    }
+
+    {
+      {
+        throw Error( "Unknown unit of work tag (" + workInProgress.tag + "). This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+  }
+
+  function unwindWork(workInProgress, renderExpirationTime) {
+    switch (workInProgress.tag) {
+      case ClassComponent:
+        {
+          var Component = workInProgress.type;
+
+          if (isContextProvider(Component)) {
+            popContext(workInProgress);
+          }
+
+          var effectTag = workInProgress.effectTag;
+
+          if (effectTag & ShouldCapture) {
+            workInProgress.effectTag = effectTag & ~ShouldCapture | DidCapture;
+            return workInProgress;
+          }
+
+          return null;
+        }
+
+      case HostRoot:
+        {
+          popHostContainer(workInProgress);
+          popTopLevelContextObject(workInProgress);
+          var _effectTag = workInProgress.effectTag;
+
+          if (!((_effectTag & DidCapture) === NoEffect)) {
+            {
+              throw Error( "The root failed to unmount after an error. This is likely a bug in React. Please file an issue." );
+            }
+          }
+
+          workInProgress.effectTag = _effectTag & ~ShouldCapture | DidCapture;
+          return workInProgress;
+        }
+
+      case HostComponent:
+        {
+          // TODO: popHydrationState
+          popHostContext(workInProgress);
+          return null;
+        }
+
+      case SuspenseComponent:
+        {
+          popSuspenseContext(workInProgress);
+
+          var _effectTag2 = workInProgress.effectTag;
+
+          if (_effectTag2 & ShouldCapture) {
+            workInProgress.effectTag = _effectTag2 & ~ShouldCapture | DidCapture; // Captured a suspense effect. Re-render the boundary.
+
+            return workInProgress;
+          }
+
+          return null;
+        }
+
+      case SuspenseListComponent:
+        {
+          popSuspenseContext(workInProgress); // SuspenseList doesn't actually catch anything. It should've been
+          // caught by a nested boundary. If not, it should bubble through.
+
+          return null;
+        }
+
+      case HostPortal:
+        popHostContainer(workInProgress);
+        return null;
+
+      case ContextProvider:
+        popProvider(workInProgress);
+        return null;
+
+      default:
+        return null;
+    }
+  }
+
+  function unwindInterruptedWork(interruptedWork) {
+    switch (interruptedWork.tag) {
+      case ClassComponent:
+        {
+          var childContextTypes = interruptedWork.type.childContextTypes;
+
+          if (childContextTypes !== null && childContextTypes !== undefined) {
+            popContext(interruptedWork);
+          }
+
+          break;
+        }
+
+      case HostRoot:
+        {
+          popHostContainer(interruptedWork);
+          popTopLevelContextObject(interruptedWork);
+          break;
+        }
+
+      case HostComponent:
+        {
+          popHostContext(interruptedWork);
+          break;
+        }
+
+      case HostPortal:
+        popHostContainer(interruptedWork);
+        break;
+
+      case SuspenseComponent:
+        popSuspenseContext(interruptedWork);
+        break;
+
+      case SuspenseListComponent:
+        popSuspenseContext(interruptedWork);
+        break;
+
+      case ContextProvider:
+        popProvider(interruptedWork);
+        break;
+    }
+  }
+
+  function createCapturedValue(value, source) {
+    // If the value is an error, call this function immediately after it is thrown
+    // so the stack is accurate.
+    return {
+      value: value,
+      source: source,
+      stack: getStackByFiberInDevAndProd(source)
+    };
+  }
+
+  function logCapturedError(capturedError) {
+
+    var error = capturedError.error;
+
+    {
+      var componentName = capturedError.componentName,
+          componentStack = capturedError.componentStack,
+          errorBoundaryName = capturedError.errorBoundaryName,
+          errorBoundaryFound = capturedError.errorBoundaryFound,
+          willRetry = capturedError.willRetry; // Browsers support silencing uncaught errors by calling
+      // `preventDefault()` in window `error` handler.
+      // We record this information as an expando on the error.
+
+      if (error != null && error._suppressLogging) {
+        if (errorBoundaryFound && willRetry) {
+          // The error is recoverable and was silenced.
+          // Ignore it and don't print the stack addendum.
+          // This is handy for testing error boundaries without noise.
+          return;
+        } // The error is fatal. Since the silencing might have
+        // been accidental, we'll surface it anyway.
+        // However, the browser would have silenced the original error
+        // so we'll print it first, and then print the stack addendum.
+
+
+        console['error'](error); // Don't transform to our wrapper
+        // For a more detailed description of this block, see:
+        // https://github.com/facebook/react/pull/13384
+      }
+
+      var componentNameMessage = componentName ? "The above error occurred in the <" + componentName + "> component:" : 'The above error occurred in one of your React components:';
+      var errorBoundaryMessage; // errorBoundaryFound check is sufficient; errorBoundaryName check is to satisfy Flow.
+
+      if (errorBoundaryFound && errorBoundaryName) {
+        if (willRetry) {
+          errorBoundaryMessage = "React will try to recreate this component tree from scratch " + ("using the error boundary you provided, " + errorBoundaryName + ".");
+        } else {
+          errorBoundaryMessage = "This error was initially handled by the error boundary " + errorBoundaryName + ".\n" + "Recreating the tree from scratch failed so React will unmount the tree.";
+        }
+      } else {
+        errorBoundaryMessage = 'Consider adding an error boundary to your tree to customize error handling behavior.\n' + 'Visit https://fb.me/react-error-boundaries to learn more about error boundaries.';
+      }
+
+      var combinedMessage = "" + componentNameMessage + componentStack + "\n\n" + ("" + errorBoundaryMessage); // In development, we provide our own message with just the component stack.
+      // We don't include the original error message and JS stack because the browser
+      // has already printed it. Even if the application swallows the error, it is still
+      // displayed by the browser thanks to the DEV-only fake event trick in ReactErrorUtils.
+
+      console['error'](combinedMessage); // Don't transform to our wrapper
+    }
+  }
+
+  var didWarnAboutUndefinedSnapshotBeforeUpdate = null;
+
+  {
+    didWarnAboutUndefinedSnapshotBeforeUpdate = new Set();
+  }
+
+  var PossiblyWeakSet = typeof WeakSet === 'function' ? WeakSet : Set;
+  function logError(boundary, errorInfo) {
+    var source = errorInfo.source;
+    var stack = errorInfo.stack;
+
+    if (stack === null && source !== null) {
+      stack = getStackByFiberInDevAndProd(source);
+    }
+
+    var capturedError = {
+      componentName: source !== null ? getComponentName(source.type) : null,
+      componentStack: stack !== null ? stack : '',
+      error: errorInfo.value,
+      errorBoundary: null,
+      errorBoundaryName: null,
+      errorBoundaryFound: false,
+      willRetry: false
+    };
+
+    if (boundary !== null && boundary.tag === ClassComponent) {
+      capturedError.errorBoundary = boundary.stateNode;
+      capturedError.errorBoundaryName = getComponentName(boundary.type);
+      capturedError.errorBoundaryFound = true;
+      capturedError.willRetry = true;
+    }
+
+    try {
+      logCapturedError(capturedError);
+    } catch (e) {
+      // This method must not throw, or React internal state will get messed up.
+      // If console.error is overridden, or logCapturedError() shows a dialog that throws,
+      // we want to report this error outside of the normal stack as a last resort.
+      // https://github.com/facebook/react/issues/13188
+      setTimeout(function () {
+        throw e;
+      });
+    }
+  }
+
+  var callComponentWillUnmountWithTimer = function (current, instance) {
+    startPhaseTimer(current, 'componentWillUnmount');
+    instance.props = current.memoizedProps;
+    instance.state = current.memoizedState;
+    instance.componentWillUnmount();
+    stopPhaseTimer();
+  }; // Capture errors so they don't interrupt unmounting.
+
+
+  function safelyCallComponentWillUnmount(current, instance) {
+    {
+      invokeGuardedCallback(null, callComponentWillUnmountWithTimer, null, current, instance);
+
+      if (hasCaughtError()) {
+        var unmountError = clearCaughtError();
+        captureCommitPhaseError(current, unmountError);
+      }
+    }
+  }
+
+  function safelyDetachRef(current) {
+    var ref = current.ref;
+
+    if (ref !== null) {
+      if (typeof ref === 'function') {
+        {
+          invokeGuardedCallback(null, ref, null, null);
+
+          if (hasCaughtError()) {
+            var refError = clearCaughtError();
+            captureCommitPhaseError(current, refError);
+          }
+        }
+      } else {
+        ref.current = null;
+      }
+    }
+  }
+
+  function safelyCallDestroy(current, destroy) {
+    {
+      invokeGuardedCallback(null, destroy, null);
+
+      if (hasCaughtError()) {
+        var error = clearCaughtError();
+        captureCommitPhaseError(current, error);
+      }
+    }
+  }
+
+  function commitBeforeMutationLifeCycles(current, finishedWork) {
+    switch (finishedWork.tag) {
+      case FunctionComponent:
+      case ForwardRef:
+      case SimpleMemoComponent:
+      case Block:
+        {
+          return;
+        }
+
+      case ClassComponent:
+        {
+          if (finishedWork.effectTag & Snapshot) {
+            if (current !== null) {
+              var prevProps = current.memoizedProps;
+              var prevState = current.memoizedState;
+              startPhaseTimer(finishedWork, 'getSnapshotBeforeUpdate');
+              var instance = finishedWork.stateNode; // We could update instance props and state here,
+              // but instead we rely on them being set during last render.
+              // TODO: revisit this when we implement resuming.
+
+              {
+                if (finishedWork.type === finishedWork.elementType && !didWarnAboutReassigningProps) {
+                  if (instance.props !== finishedWork.memoizedProps) {
+                    error('Expected %s props to match memoized props before ' + 'getSnapshotBeforeUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance');
+                  }
+
+                  if (instance.state !== finishedWork.memoizedState) {
+                    error('Expected %s state to match memoized state before ' + 'getSnapshotBeforeUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance');
+                  }
+                }
+              }
+
+              var snapshot = instance.getSnapshotBeforeUpdate(finishedWork.elementType === finishedWork.type ? prevProps : resolveDefaultProps(finishedWork.type, prevProps), prevState);
+
+              {
+                var didWarnSet = didWarnAboutUndefinedSnapshotBeforeUpdate;
+
+                if (snapshot === undefined && !didWarnSet.has(finishedWork.type)) {
+                  didWarnSet.add(finishedWork.type);
+
+                  error('%s.getSnapshotBeforeUpdate(): A snapshot value (or null) ' + 'must be returned. You have returned undefined.', getComponentName(finishedWork.type));
+                }
+              }
+
+              instance.__reactInternalSnapshotBeforeUpdate = snapshot;
+              stopPhaseTimer();
+            }
+          }
+
+          return;
+        }
+
+      case HostRoot:
+      case HostComponent:
+      case HostText:
+      case HostPortal:
+      case IncompleteClassComponent:
+        // Nothing to do for these component types
+        return;
+    }
+
+    {
+      {
+        throw Error( "This unit of work tag should not have side-effects. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+  }
+
+  function commitHookEffectListUnmount(tag, finishedWork) {
+    var updateQueue = finishedWork.updateQueue;
+    var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null;
+
+    if (lastEffect !== null) {
+      var firstEffect = lastEffect.next;
+      var effect = firstEffect;
+
+      do {
+        if ((effect.tag & tag) === tag) {
+          // Unmount
+          var destroy = effect.destroy;
+          effect.destroy = undefined;
+
+          if (destroy !== undefined) {
+            destroy();
+          }
+        }
+
+        effect = effect.next;
+      } while (effect !== firstEffect);
+    }
+  }
+
+  function commitHookEffectListMount(tag, finishedWork) {
+    var updateQueue = finishedWork.updateQueue;
+    var lastEffect = updateQueue !== null ? updateQueue.lastEffect : null;
+
+    if (lastEffect !== null) {
+      var firstEffect = lastEffect.next;
+      var effect = firstEffect;
+
+      do {
+        if ((effect.tag & tag) === tag) {
+          // Mount
+          var create = effect.create;
+          effect.destroy = create();
+
+          {
+            var destroy = effect.destroy;
+
+            if (destroy !== undefined && typeof destroy !== 'function') {
+              var addendum = void 0;
+
+              if (destroy === null) {
+                addendum = ' You returned null. If your effect does not require clean ' + 'up, return undefined (or nothing).';
+              } else if (typeof destroy.then === 'function') {
+                addendum = '\n\nIt looks like you wrote useEffect(async () => ...) or returned a Promise. ' + 'Instead, write the async function inside your effect ' + 'and call it immediately:\n\n' + 'useEffect(() => {\n' + '  async function fetchData() {\n' + '    // You can await here\n' + '    const response = await MyAPI.getData(someId);\n' + '    // ...\n' + '  }\n' + '  fetchData();\n' + "}, [someId]); // Or [] if effect doesn't need props or state\n\n" + 'Learn more about data fetching with Hooks: https://fb.me/react-hooks-data-fetching';
+              } else {
+                addendum = ' You returned: ' + destroy;
+              }
+
+              error('An effect function must not return anything besides a function, ' + 'which is used for clean-up.%s%s', addendum, getStackByFiberInDevAndProd(finishedWork));
+            }
+          }
+        }
+
+        effect = effect.next;
+      } while (effect !== firstEffect);
+    }
+  }
+
+  function commitPassiveHookEffects(finishedWork) {
+    if ((finishedWork.effectTag & Passive) !== NoEffect) {
+      switch (finishedWork.tag) {
+        case FunctionComponent:
+        case ForwardRef:
+        case SimpleMemoComponent:
+        case Block:
+          {
+            // TODO (#17945) We should call all passive destroy functions (for all fibers)
+            // before calling any create functions. The current approach only serializes
+            // these for a single fiber.
+            commitHookEffectListUnmount(Passive$1 | HasEffect, finishedWork);
+            commitHookEffectListMount(Passive$1 | HasEffect, finishedWork);
+            break;
+          }
+      }
+    }
+  }
+
+  function commitLifeCycles(finishedRoot, current, finishedWork, committedExpirationTime) {
+    switch (finishedWork.tag) {
+      case FunctionComponent:
+      case ForwardRef:
+      case SimpleMemoComponent:
+      case Block:
+        {
+          // At this point layout effects have already been destroyed (during mutation phase).
+          // This is done to prevent sibling component effects from interfering with each other,
+          // e.g. a destroy function in one component should never override a ref set
+          // by a create function in another component during the same commit.
+          commitHookEffectListMount(Layout | HasEffect, finishedWork);
+
+          return;
+        }
+
+      case ClassComponent:
+        {
+          var instance = finishedWork.stateNode;
+
+          if (finishedWork.effectTag & Update) {
+            if (current === null) {
+              startPhaseTimer(finishedWork, 'componentDidMount'); // We could update instance props and state here,
+              // but instead we rely on them being set during last render.
+              // TODO: revisit this when we implement resuming.
+
+              {
+                if (finishedWork.type === finishedWork.elementType && !didWarnAboutReassigningProps) {
+                  if (instance.props !== finishedWork.memoizedProps) {
+                    error('Expected %s props to match memoized props before ' + 'componentDidMount. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance');
+                  }
+
+                  if (instance.state !== finishedWork.memoizedState) {
+                    error('Expected %s state to match memoized state before ' + 'componentDidMount. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance');
+                  }
+                }
+              }
+
+              instance.componentDidMount();
+              stopPhaseTimer();
+            } else {
+              var prevProps = finishedWork.elementType === finishedWork.type ? current.memoizedProps : resolveDefaultProps(finishedWork.type, current.memoizedProps);
+              var prevState = current.memoizedState;
+              startPhaseTimer(finishedWork, 'componentDidUpdate'); // We could update instance props and state here,
+              // but instead we rely on them being set during last render.
+              // TODO: revisit this when we implement resuming.
+
+              {
+                if (finishedWork.type === finishedWork.elementType && !didWarnAboutReassigningProps) {
+                  if (instance.props !== finishedWork.memoizedProps) {
+                    error('Expected %s props to match memoized props before ' + 'componentDidUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance');
+                  }
+
+                  if (instance.state !== finishedWork.memoizedState) {
+                    error('Expected %s state to match memoized state before ' + 'componentDidUpdate. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance');
+                  }
+                }
+              }
+
+              instance.componentDidUpdate(prevProps, prevState, instance.__reactInternalSnapshotBeforeUpdate);
+              stopPhaseTimer();
+            }
+          }
+
+          var updateQueue = finishedWork.updateQueue;
+
+          if (updateQueue !== null) {
+            {
+              if (finishedWork.type === finishedWork.elementType && !didWarnAboutReassigningProps) {
+                if (instance.props !== finishedWork.memoizedProps) {
+                  error('Expected %s props to match memoized props before ' + 'processing the update queue. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance');
+                }
+
+                if (instance.state !== finishedWork.memoizedState) {
+                  error('Expected %s state to match memoized state before ' + 'processing the update queue. ' + 'This might either be because of a bug in React, or because ' + 'a component reassigns its own `this.props`. ' + 'Please file an issue.', getComponentName(finishedWork.type) || 'instance');
+                }
+              }
+            } // We could update instance props and state here,
+            // but instead we rely on them being set during last render.
+            // TODO: revisit this when we implement resuming.
+
+
+            commitUpdateQueue(finishedWork, updateQueue, instance);
+          }
+
+          return;
+        }
+
+      case HostRoot:
+        {
+          var _updateQueue = finishedWork.updateQueue;
+
+          if (_updateQueue !== null) {
+            var _instance = null;
+
+            if (finishedWork.child !== null) {
+              switch (finishedWork.child.tag) {
+                case HostComponent:
+                  _instance = getPublicInstance(finishedWork.child.stateNode);
+                  break;
+
+                case ClassComponent:
+                  _instance = finishedWork.child.stateNode;
+                  break;
+              }
+            }
+
+            commitUpdateQueue(finishedWork, _updateQueue, _instance);
+          }
+
+          return;
+        }
+
+      case HostComponent:
+        {
+          var _instance2 = finishedWork.stateNode; // Renderers may schedule work to be done after host components are mounted
+          // (eg DOM renderer may schedule auto-focus for inputs and form controls).
+          // These effects should only be committed when components are first mounted,
+          // aka when there is no current/alternate.
+
+          if (current === null && finishedWork.effectTag & Update) {
+            var type = finishedWork.type;
+            var props = finishedWork.memoizedProps;
+            commitMount(_instance2, type, props);
+          }
+
+          return;
+        }
+
+      case HostText:
+        {
+          // We have no life-cycles associated with text.
+          return;
+        }
+
+      case HostPortal:
+        {
+          // We have no life-cycles associated with portals.
+          return;
+        }
+
+      case Profiler:
+        {
+          {
+            var onRender = finishedWork.memoizedProps.onRender;
+
+            if (typeof onRender === 'function') {
+              {
+                onRender(finishedWork.memoizedProps.id, current === null ? 'mount' : 'update', finishedWork.actualDuration, finishedWork.treeBaseDuration, finishedWork.actualStartTime, getCommitTime(), finishedRoot.memoizedInteractions);
+              }
+            }
+          }
+
+          return;
+        }
+
+      case SuspenseComponent:
+        {
+          commitSuspenseHydrationCallbacks(finishedRoot, finishedWork);
+          return;
+        }
+
+      case SuspenseListComponent:
+      case IncompleteClassComponent:
+      case FundamentalComponent:
+      case ScopeComponent:
+        return;
+    }
+
+    {
+      {
+        throw Error( "This unit of work tag should not have side-effects. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+  }
+
+  function hideOrUnhideAllChildren(finishedWork, isHidden) {
+    {
+      // We only have the top Fiber that was inserted but we need to recurse down its
+      // children to find all the terminal nodes.
+      var node = finishedWork;
+
+      while (true) {
+        if (node.tag === HostComponent) {
+          var instance = node.stateNode;
+
+          if (isHidden) {
+            hideInstance(instance);
+          } else {
+            unhideInstance(node.stateNode, node.memoizedProps);
+          }
+        } else if (node.tag === HostText) {
+          var _instance3 = node.stateNode;
+
+          if (isHidden) {
+            hideTextInstance(_instance3);
+          } else {
+            unhideTextInstance(_instance3, node.memoizedProps);
+          }
+        } else if (node.tag === SuspenseComponent && node.memoizedState !== null && node.memoizedState.dehydrated === null) {
+          // Found a nested Suspense component that timed out. Skip over the
+          // primary child fragment, which should remain hidden.
+          var fallbackChildFragment = node.child.sibling;
+          fallbackChildFragment.return = node;
+          node = fallbackChildFragment;
+          continue;
+        } else if (node.child !== null) {
+          node.child.return = node;
+          node = node.child;
+          continue;
+        }
+
+        if (node === finishedWork) {
+          return;
+        }
+
+        while (node.sibling === null) {
+          if (node.return === null || node.return === finishedWork) {
+            return;
+          }
+
+          node = node.return;
+        }
+
+        node.sibling.return = node.return;
+        node = node.sibling;
+      }
+    }
+  }
+
+  function commitAttachRef(finishedWork) {
+    var ref = finishedWork.ref;
+
+    if (ref !== null) {
+      var instance = finishedWork.stateNode;
+      var instanceToUse;
+
+      switch (finishedWork.tag) {
+        case HostComponent:
+          instanceToUse = getPublicInstance(instance);
+          break;
+
+        default:
+          instanceToUse = instance;
+      } // Moved outside to ensure DCE works with this flag
+
+      if (typeof ref === 'function') {
+        ref(instanceToUse);
+      } else {
+        {
+          if (!ref.hasOwnProperty('current')) {
+            error('Unexpected ref object provided for %s. ' + 'Use either a ref-setter function or React.createRef().%s', getComponentName(finishedWork.type), getStackByFiberInDevAndProd(finishedWork));
+          }
+        }
+
+        ref.current = instanceToUse;
+      }
+    }
+  }
+
+  function commitDetachRef(current) {
+    var currentRef = current.ref;
+
+    if (currentRef !== null) {
+      if (typeof currentRef === 'function') {
+        currentRef(null);
+      } else {
+        currentRef.current = null;
+      }
+    }
+  } // User-originating errors (lifecycles and refs) should not interrupt
+  // deletion, so don't let them throw. Host-originating errors should
+  // interrupt deletion, so it's okay
+
+
+  function commitUnmount(finishedRoot, current, renderPriorityLevel) {
+    onCommitUnmount(current);
+
+    switch (current.tag) {
+      case FunctionComponent:
+      case ForwardRef:
+      case MemoComponent:
+      case SimpleMemoComponent:
+      case Block:
+        {
+          var updateQueue = current.updateQueue;
+
+          if (updateQueue !== null) {
+            var lastEffect = updateQueue.lastEffect;
+
+            if (lastEffect !== null) {
+              var firstEffect = lastEffect.next;
+
+              {
+                // When the owner fiber is deleted, the destroy function of a passive
+                // effect hook is called during the synchronous commit phase. This is
+                // a concession to implementation complexity. Calling it in the
+                // passive effect phase (like they usually are, when dependencies
+                // change during an update) would require either traversing the
+                // children of the deleted fiber again, or including unmount effects
+                // as part of the fiber effect list.
+                //
+                // Because this is during the sync commit phase, we need to change
+                // the priority.
+                //
+                // TODO: Reconsider this implementation trade off.
+                var priorityLevel = renderPriorityLevel > NormalPriority ? NormalPriority : renderPriorityLevel;
+                runWithPriority$1(priorityLevel, function () {
+                  var effect = firstEffect;
+
+                  do {
+                    var _destroy = effect.destroy;
+
+                    if (_destroy !== undefined) {
+                      safelyCallDestroy(current, _destroy);
+                    }
+
+                    effect = effect.next;
+                  } while (effect !== firstEffect);
+                });
+              }
+            }
+          }
+
+          return;
+        }
+
+      case ClassComponent:
+        {
+          safelyDetachRef(current);
+          var instance = current.stateNode;
+
+          if (typeof instance.componentWillUnmount === 'function') {
+            safelyCallComponentWillUnmount(current, instance);
+          }
+
+          return;
+        }
+
+      case HostComponent:
+        {
+
+          safelyDetachRef(current);
+          return;
+        }
+
+      case HostPortal:
+        {
+          // TODO: this is recursive.
+          // We are also not using this parent because
+          // the portal will get pushed immediately.
+          {
+            unmountHostComponents(finishedRoot, current, renderPriorityLevel);
+          }
+
+          return;
+        }
+
+      case FundamentalComponent:
+        {
+
+          return;
+        }
+
+      case DehydratedFragment:
+        {
+
+          return;
+        }
+
+      case ScopeComponent:
+        {
+
+          return;
+        }
+    }
+  }
+
+  function commitNestedUnmounts(finishedRoot, root, renderPriorityLevel) {
+    // While we're inside a removed host node we don't want to call
+    // removeChild on the inner nodes because they're removed by the top
+    // call anyway. We also want to call componentWillUnmount on all
+    // composites before this host node is removed from the tree. Therefore
+    // we do an inner loop while we're still inside the host node.
+    var node = root;
+
+    while (true) {
+      commitUnmount(finishedRoot, node, renderPriorityLevel); // Visit children because they may contain more composite or host nodes.
+      // Skip portals because commitUnmount() currently visits them recursively.
+
+      if (node.child !== null && ( // If we use mutation we drill down into portals using commitUnmount above.
+      // If we don't use mutation we drill down into portals here instead.
+       node.tag !== HostPortal)) {
+        node.child.return = node;
+        node = node.child;
+        continue;
+      }
+
+      if (node === root) {
+        return;
+      }
+
+      while (node.sibling === null) {
+        if (node.return === null || node.return === root) {
+          return;
+        }
+
+        node = node.return;
+      }
+
+      node.sibling.return = node.return;
+      node = node.sibling;
+    }
+  }
+
+  function detachFiber(current) {
+    var alternate = current.alternate; // Cut off the return pointers to disconnect it from the tree. Ideally, we
+    // should clear the child pointer of the parent alternate to let this
+    // get GC:ed but we don't know which for sure which parent is the current
+    // one so we'll settle for GC:ing the subtree of this child. This child
+    // itself will be GC:ed when the parent updates the next time.
+
+    current.return = null;
+    current.child = null;
+    current.memoizedState = null;
+    current.updateQueue = null;
+    current.dependencies = null;
+    current.alternate = null;
+    current.firstEffect = null;
+    current.lastEffect = null;
+    current.pendingProps = null;
+    current.memoizedProps = null;
+    current.stateNode = null;
+
+    if (alternate !== null) {
+      detachFiber(alternate);
+    }
+  }
+
+  function getHostParentFiber(fiber) {
+    var parent = fiber.return;
+
+    while (parent !== null) {
+      if (isHostParent(parent)) {
+        return parent;
+      }
+
+      parent = parent.return;
+    }
+
+    {
+      {
+        throw Error( "Expected to find a host parent. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+  }
+
+  function isHostParent(fiber) {
+    return fiber.tag === HostComponent || fiber.tag === HostRoot || fiber.tag === HostPortal;
+  }
+
+  function getHostSibling(fiber) {
+    // We're going to search forward into the tree until we find a sibling host
+    // node. Unfortunately, if multiple insertions are done in a row we have to
+    // search past them. This leads to exponential search for the next sibling.
+    // TODO: Find a more efficient way to do this.
+    var node = fiber;
+
+    siblings: while (true) {
+      // If we didn't find anything, let's try the next sibling.
+      while (node.sibling === null) {
+        if (node.return === null || isHostParent(node.return)) {
+          // If we pop out of the root or hit the parent the fiber we are the
+          // last sibling.
+          return null;
+        }
+
+        node = node.return;
+      }
+
+      node.sibling.return = node.return;
+      node = node.sibling;
+
+      while (node.tag !== HostComponent && node.tag !== HostText && node.tag !== DehydratedFragment) {
+        // If it is not host node and, we might have a host node inside it.
+        // Try to search down until we find one.
+        if (node.effectTag & Placement) {
+          // If we don't have a child, try the siblings instead.
+          continue siblings;
+        } // If we don't have a child, try the siblings instead.
+        // We also skip portals because they are not part of this host tree.
+
+
+        if (node.child === null || node.tag === HostPortal) {
+          continue siblings;
+        } else {
+          node.child.return = node;
+          node = node.child;
+        }
+      } // Check if this host node is stable or about to be placed.
+
+
+      if (!(node.effectTag & Placement)) {
+        // Found it!
+        return node.stateNode;
+      }
+    }
+  }
+
+  function commitPlacement(finishedWork) {
+
+
+    var parentFiber = getHostParentFiber(finishedWork); // Note: these two variables *must* always be updated together.
+
+    var parent;
+    var isContainer;
+    var parentStateNode = parentFiber.stateNode;
+
+    switch (parentFiber.tag) {
+      case HostComponent:
+        parent = parentStateNode;
+        isContainer = false;
+        break;
+
+      case HostRoot:
+        parent = parentStateNode.containerInfo;
+        isContainer = true;
+        break;
+
+      case HostPortal:
+        parent = parentStateNode.containerInfo;
+        isContainer = true;
+        break;
+
+      case FundamentalComponent:
+
+      // eslint-disable-next-line-no-fallthrough
+
+      default:
+        {
+          {
+            throw Error( "Invalid host parent fiber. This error is likely caused by a bug in React. Please file an issue." );
+          }
+        }
+
+    }
+
+    if (parentFiber.effectTag & ContentReset) {
+      // Reset the text content of the parent before doing any insertions
+      resetTextContent(parent); // Clear ContentReset from the effect tag
+
+      parentFiber.effectTag &= ~ContentReset;
+    }
+
+    var before = getHostSibling(finishedWork); // We only have the top Fiber that was inserted but we need to recurse down its
+    // children to find all the terminal nodes.
+
+    if (isContainer) {
+      insertOrAppendPlacementNodeIntoContainer(finishedWork, before, parent);
+    } else {
+      insertOrAppendPlacementNode(finishedWork, before, parent);
+    }
+  }
+
+  function insertOrAppendPlacementNodeIntoContainer(node, before, parent) {
+    var tag = node.tag;
+    var isHost = tag === HostComponent || tag === HostText;
+
+    if (isHost || enableFundamentalAPI ) {
+      var stateNode = isHost ? node.stateNode : node.stateNode.instance;
+
+      if (before) {
+        insertInContainerBefore(parent, stateNode, before);
+      } else {
+        appendChildToContainer(parent, stateNode);
+      }
+    } else if (tag === HostPortal) ; else {
+      var child = node.child;
+
+      if (child !== null) {
+        insertOrAppendPlacementNodeIntoContainer(child, before, parent);
+        var sibling = child.sibling;
+
+        while (sibling !== null) {
+          insertOrAppendPlacementNodeIntoContainer(sibling, before, parent);
+          sibling = sibling.sibling;
+        }
+      }
+    }
+  }
+
+  function insertOrAppendPlacementNode(node, before, parent) {
+    var tag = node.tag;
+    var isHost = tag === HostComponent || tag === HostText;
+
+    if (isHost || enableFundamentalAPI ) {
+      var stateNode = isHost ? node.stateNode : node.stateNode.instance;
+
+      if (before) {
+        insertBefore(parent, stateNode, before);
+      } else {
+        appendChild(parent, stateNode);
+      }
+    } else if (tag === HostPortal) ; else {
+      var child = node.child;
+
+      if (child !== null) {
+        insertOrAppendPlacementNode(child, before, parent);
+        var sibling = child.sibling;
+
+        while (sibling !== null) {
+          insertOrAppendPlacementNode(sibling, before, parent);
+          sibling = sibling.sibling;
+        }
+      }
+    }
+  }
+
+  function unmountHostComponents(finishedRoot, current, renderPriorityLevel) {
+    // We only have the top Fiber that was deleted but we need to recurse down its
+    // children to find all the terminal nodes.
+    var node = current; // Each iteration, currentParent is populated with node's host parent if not
+    // currentParentIsValid.
+
+    var currentParentIsValid = false; // Note: these two variables *must* always be updated together.
+
+    var currentParent;
+    var currentParentIsContainer;
+
+    while (true) {
+      if (!currentParentIsValid) {
+        var parent = node.return;
+
+        findParent: while (true) {
+          if (!(parent !== null)) {
+            {
+              throw Error( "Expected to find a host parent. This error is likely caused by a bug in React. Please file an issue." );
+            }
+          }
+
+          var parentStateNode = parent.stateNode;
+
+          switch (parent.tag) {
+            case HostComponent:
+              currentParent = parentStateNode;
+              currentParentIsContainer = false;
+              break findParent;
+
+            case HostRoot:
+              currentParent = parentStateNode.containerInfo;
+              currentParentIsContainer = true;
+              break findParent;
+
+            case HostPortal:
+              currentParent = parentStateNode.containerInfo;
+              currentParentIsContainer = true;
+              break findParent;
+
+          }
+
+          parent = parent.return;
+        }
+
+        currentParentIsValid = true;
+      }
+
+      if (node.tag === HostComponent || node.tag === HostText) {
+        commitNestedUnmounts(finishedRoot, node, renderPriorityLevel); // After all the children have unmounted, it is now safe to remove the
+        // node from the tree.
+
+        if (currentParentIsContainer) {
+          removeChildFromContainer(currentParent, node.stateNode);
+        } else {
+          removeChild(currentParent, node.stateNode);
+        } // Don't visit children because we already visited them.
+
+      } else if (node.tag === HostPortal) {
+        if (node.child !== null) {
+          // When we go into a portal, it becomes the parent to remove from.
+          // We will reassign it back when we pop the portal on the way up.
+          currentParent = node.stateNode.containerInfo;
+          currentParentIsContainer = true; // Visit children because portals might contain host components.
+
+          node.child.return = node;
+          node = node.child;
+          continue;
+        }
+      } else {
+        commitUnmount(finishedRoot, node, renderPriorityLevel); // Visit children because we may find more host components below.
+
+        if (node.child !== null) {
+          node.child.return = node;
+          node = node.child;
+          continue;
+        }
+      }
+
+      if (node === current) {
+        return;
+      }
+
+      while (node.sibling === null) {
+        if (node.return === null || node.return === current) {
+          return;
+        }
+
+        node = node.return;
+
+        if (node.tag === HostPortal) {
+          // When we go out of the portal, we need to restore the parent.
+          // Since we don't keep a stack of them, we will search for it.
+          currentParentIsValid = false;
+        }
+      }
+
+      node.sibling.return = node.return;
+      node = node.sibling;
+    }
+  }
+
+  function commitDeletion(finishedRoot, current, renderPriorityLevel) {
+    {
+      // Recursively delete all host nodes from the parent.
+      // Detach refs and call componentWillUnmount() on the whole subtree.
+      unmountHostComponents(finishedRoot, current, renderPriorityLevel);
+    }
+
+    detachFiber(current);
+  }
+
+  function commitWork(current, finishedWork) {
+
+    switch (finishedWork.tag) {
+      case FunctionComponent:
+      case ForwardRef:
+      case MemoComponent:
+      case SimpleMemoComponent:
+      case Block:
+        {
+          // Layout effects are destroyed during the mutation phase so that all
+          // destroy functions for all fibers are called before any create functions.
+          // This prevents sibling component effects from interfering with each other,
+          // e.g. a destroy function in one component should never override a ref set
+          // by a create function in another component during the same commit.
+          commitHookEffectListUnmount(Layout | HasEffect, finishedWork);
+          return;
+        }
+
+      case ClassComponent:
+        {
+          return;
+        }
+
+      case HostComponent:
+        {
+          var instance = finishedWork.stateNode;
+
+          if (instance != null) {
+            // Commit the work prepared earlier.
+            var newProps = finishedWork.memoizedProps; // For hydration we reuse the update path but we treat the oldProps
+            // as the newProps. The updatePayload will contain the real change in
+            // this case.
+
+            var oldProps = current !== null ? current.memoizedProps : newProps;
+            var type = finishedWork.type; // TODO: Type the updateQueue to be specific to host components.
+
+            var updatePayload = finishedWork.updateQueue;
+            finishedWork.updateQueue = null;
+
+            if (updatePayload !== null) {
+              commitUpdate(instance, updatePayload, type, oldProps, newProps);
+            }
+          }
+
+          return;
+        }
+
+      case HostText:
+        {
+          if (!(finishedWork.stateNode !== null)) {
+            {
+              throw Error( "This should have a text node initialized. This error is likely caused by a bug in React. Please file an issue." );
+            }
+          }
+
+          var textInstance = finishedWork.stateNode;
+          var newText = finishedWork.memoizedProps; // For hydration we reuse the update path but we treat the oldProps
+          // as the newProps. The updatePayload will contain the real change in
+          // this case.
+
+          var oldText = current !== null ? current.memoizedProps : newText;
+          commitTextUpdate(textInstance, oldText, newText);
+          return;
+        }
+
+      case HostRoot:
+        {
+          {
+            var _root = finishedWork.stateNode;
+
+            if (_root.hydrate) {
+              // We've just hydrated. No need to hydrate again.
+              _root.hydrate = false;
+              commitHydratedContainer(_root.containerInfo);
+            }
+          }
+
+          return;
+        }
+
+      case Profiler:
+        {
+          return;
+        }
+
+      case SuspenseComponent:
+        {
+          commitSuspenseComponent(finishedWork);
+          attachSuspenseRetryListeners(finishedWork);
+          return;
+        }
+
+      case SuspenseListComponent:
+        {
+          attachSuspenseRetryListeners(finishedWork);
+          return;
+        }
+
+      case IncompleteClassComponent:
+        {
+          return;
+        }
+    }
+
+    {
+      {
+        throw Error( "This unit of work tag should not have side-effects. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    }
+  }
+
+  function commitSuspenseComponent(finishedWork) {
+    var newState = finishedWork.memoizedState;
+    var newDidTimeout;
+    var primaryChildParent = finishedWork;
+
+    if (newState === null) {
+      newDidTimeout = false;
+    } else {
+      newDidTimeout = true;
+      primaryChildParent = finishedWork.child;
+      markCommitTimeOfFallback();
+    }
+
+    if ( primaryChildParent !== null) {
+      hideOrUnhideAllChildren(primaryChildParent, newDidTimeout);
+    }
+  }
+
+  function commitSuspenseHydrationCallbacks(finishedRoot, finishedWork) {
+
+    var newState = finishedWork.memoizedState;
+
+    if (newState === null) {
+      var current = finishedWork.alternate;
+
+      if (current !== null) {
+        var prevState = current.memoizedState;
+
+        if (prevState !== null) {
+          var suspenseInstance = prevState.dehydrated;
+
+          if (suspenseInstance !== null) {
+            commitHydratedSuspenseInstance(suspenseInstance);
+          }
+        }
+      }
+    }
+  }
+
+  function attachSuspenseRetryListeners(finishedWork) {
+    // If this boundary just timed out, then it will have a set of thenables.
+    // For each thenable, attach a listener so that when it resolves, React
+    // attempts to re-render the boundary in the primary (pre-timeout) state.
+    var thenables = finishedWork.updateQueue;
+
+    if (thenables !== null) {
+      finishedWork.updateQueue = null;
+      var retryCache = finishedWork.stateNode;
+
+      if (retryCache === null) {
+        retryCache = finishedWork.stateNode = new PossiblyWeakSet();
+      }
+
+      thenables.forEach(function (thenable) {
+        // Memoize using the boundary fiber to prevent redundant listeners.
+        var retry = resolveRetryThenable.bind(null, finishedWork, thenable);
+
+        if (!retryCache.has(thenable)) {
+          {
+            if (thenable.__reactDoNotTraceInteractions !== true) {
+              retry = unstable_wrap(retry);
+            }
+          }
+
+          retryCache.add(thenable);
+          thenable.then(retry, retry);
+        }
+      });
+    }
+  }
+
+  function commitResetTextContent(current) {
+
+    resetTextContent(current.stateNode);
+  }
+
+  var PossiblyWeakMap$1 = typeof WeakMap === 'function' ? WeakMap : Map;
+
+  function createRootErrorUpdate(fiber, errorInfo, expirationTime) {
+    var update = createUpdate(expirationTime, null); // Unmount the root by rendering null.
+
+    update.tag = CaptureUpdate; // Caution: React DevTools currently depends on this property
+    // being called "element".
+
+    update.payload = {
+      element: null
+    };
+    var error = errorInfo.value;
+
+    update.callback = function () {
+      onUncaughtError(error);
+      logError(fiber, errorInfo);
+    };
+
+    return update;
+  }
+
+  function createClassErrorUpdate(fiber, errorInfo, expirationTime) {
+    var update = createUpdate(expirationTime, null);
+    update.tag = CaptureUpdate;
+    var getDerivedStateFromError = fiber.type.getDerivedStateFromError;
+
+    if (typeof getDerivedStateFromError === 'function') {
+      var error$1 = errorInfo.value;
+
+      update.payload = function () {
+        logError(fiber, errorInfo);
+        return getDerivedStateFromError(error$1);
+      };
+    }
+
+    var inst = fiber.stateNode;
+
+    if (inst !== null && typeof inst.componentDidCatch === 'function') {
+      update.callback = function callback() {
+        {
+          markFailedErrorBoundaryForHotReloading(fiber);
+        }
+
+        if (typeof getDerivedStateFromError !== 'function') {
+          // To preserve the preexisting retry behavior of error boundaries,
+          // we keep track of which ones already failed during this batch.
+          // This gets reset before we yield back to the browser.
+          // TODO: Warn in strict mode if getDerivedStateFromError is
+          // not defined.
+          markLegacyErrorBoundaryAsFailed(this); // Only log here if componentDidCatch is the only error boundary method defined
+
+          logError(fiber, errorInfo);
+        }
+
+        var error$1 = errorInfo.value;
+        var stack = errorInfo.stack;
+        this.componentDidCatch(error$1, {
+          componentStack: stack !== null ? stack : ''
+        });
+
+        {
+          if (typeof getDerivedStateFromError !== 'function') {
+            // If componentDidCatch is the only error boundary method defined,
+            // then it needs to call setState to recover from errors.
+            // If no state update is scheduled then the boundary will swallow the error.
+            if (fiber.expirationTime !== Sync) {
+              error('%s: Error boundaries should implement getDerivedStateFromError(). ' + 'In that method, return a state update to display an error message or fallback UI.', getComponentName(fiber.type) || 'Unknown');
+            }
+          }
+        }
+      };
+    } else {
+      update.callback = function () {
+        markFailedErrorBoundaryForHotReloading(fiber);
+      };
+    }
+
+    return update;
+  }
+
+  function attachPingListener(root, renderExpirationTime, thenable) {
+    // Attach a listener to the promise to "ping" the root and retry. But
+    // only if one does not already exist for the current render expiration
+    // time (which acts like a "thread ID" here).
+    var pingCache = root.pingCache;
+    var threadIDs;
+
+    if (pingCache === null) {
+      pingCache = root.pingCache = new PossiblyWeakMap$1();
+      threadIDs = new Set();
+      pingCache.set(thenable, threadIDs);
+    } else {
+      threadIDs = pingCache.get(thenable);
+
+      if (threadIDs === undefined) {
+        threadIDs = new Set();
+        pingCache.set(thenable, threadIDs);
+      }
+    }
+
+    if (!threadIDs.has(renderExpirationTime)) {
+      // Memoize using the thread ID to prevent redundant listeners.
+      threadIDs.add(renderExpirationTime);
+      var ping = pingSuspendedRoot.bind(null, root, thenable, renderExpirationTime);
+      thenable.then(ping, ping);
+    }
+  }
+
+  function throwException(root, returnFiber, sourceFiber, value, renderExpirationTime) {
+    // The source fiber did not complete.
+    sourceFiber.effectTag |= Incomplete; // Its effect list is no longer valid.
+
+    sourceFiber.firstEffect = sourceFiber.lastEffect = null;
+
+    if (value !== null && typeof value === 'object' && typeof value.then === 'function') {
+      // This is a thenable.
+      var thenable = value;
+
+      if ((sourceFiber.mode & BlockingMode) === NoMode) {
+        // Reset the memoizedState to what it was before we attempted
+        // to render it.
+        var currentSource = sourceFiber.alternate;
+
+        if (currentSource) {
+          sourceFiber.updateQueue = currentSource.updateQueue;
+          sourceFiber.memoizedState = currentSource.memoizedState;
+          sourceFiber.expirationTime = currentSource.expirationTime;
+        } else {
+          sourceFiber.updateQueue = null;
+          sourceFiber.memoizedState = null;
+        }
+      }
+
+      var hasInvisibleParentBoundary = hasSuspenseContext(suspenseStackCursor.current, InvisibleParentSuspenseContext); // Schedule the nearest Suspense to re-render the timed out view.
+
+      var _workInProgress = returnFiber;
+
+      do {
+        if (_workInProgress.tag === SuspenseComponent && shouldCaptureSuspense(_workInProgress, hasInvisibleParentBoundary)) {
+          // Found the nearest boundary.
+          // Stash the promise on the boundary fiber. If the boundary times out, we'll
+          // attach another listener to flip the boundary back to its normal state.
+          var thenables = _workInProgress.updateQueue;
+
+          if (thenables === null) {
+            var updateQueue = new Set();
+            updateQueue.add(thenable);
+            _workInProgress.updateQueue = updateQueue;
+          } else {
+            thenables.add(thenable);
+          } // If the boundary is outside of blocking mode, we should *not*
+          // suspend the commit. Pretend as if the suspended component rendered
+          // null and keep rendering. In the commit phase, we'll schedule a
+          // subsequent synchronous update to re-render the Suspense.
+          //
+          // Note: It doesn't matter whether the component that suspended was
+          // inside a blocking mode tree. If the Suspense is outside of it, we
+          // should *not* suspend the commit.
+
+
+          if ((_workInProgress.mode & BlockingMode) === NoMode) {
+            _workInProgress.effectTag |= DidCapture; // We're going to commit this fiber even though it didn't complete.
+            // But we shouldn't call any lifecycle methods or callbacks. Remove
+            // all lifecycle effect tags.
+
+            sourceFiber.effectTag &= ~(LifecycleEffectMask | Incomplete);
+
+            if (sourceFiber.tag === ClassComponent) {
+              var currentSourceFiber = sourceFiber.alternate;
+
+              if (currentSourceFiber === null) {
+                // This is a new mount. Change the tag so it's not mistaken for a
+                // completed class component. For example, we should not call
+                // componentWillUnmount if it is deleted.
+                sourceFiber.tag = IncompleteClassComponent;
+              } else {
+                // When we try rendering again, we should not reuse the current fiber,
+                // since it's known to be in an inconsistent state. Use a force update to
+                // prevent a bail out.
+                var update = createUpdate(Sync, null);
+                update.tag = ForceUpdate;
+                enqueueUpdate(sourceFiber, update);
+              }
+            } // The source fiber did not complete. Mark it with Sync priority to
+            // indicate that it still has pending work.
+
+
+            sourceFiber.expirationTime = Sync; // Exit without suspending.
+
+            return;
+          } // Confirmed that the boundary is in a concurrent mode tree. Continue
+          // with the normal suspend path.
+          //
+          // After this we'll use a set of heuristics to determine whether this
+          // render pass will run to completion or restart or "suspend" the commit.
+          // The actual logic for this is spread out in different places.
+          //
+          // This first principle is that if we're going to suspend when we complete
+          // a root, then we should also restart if we get an update or ping that
+          // might unsuspend it, and vice versa. The only reason to suspend is
+          // because you think you might want to restart before committing. However,
+          // it doesn't make sense to restart only while in the period we're suspended.
+          //
+          // Restarting too aggressively is also not good because it starves out any
+          // intermediate loading state. So we use heuristics to determine when.
+          // Suspense Heuristics
+          //
+          // If nothing threw a Promise or all the same fallbacks are already showing,
+          // then don't suspend/restart.
+          //
+          // If this is an initial render of a new tree of Suspense boundaries and
+          // those trigger a fallback, then don't suspend/restart. We want to ensure
+          // that we can show the initial loading state as quickly as possible.
+          //
+          // If we hit a "Delayed" case, such as when we'd switch from content back into
+          // a fallback, then we should always suspend/restart. SuspenseConfig applies to
+          // this case. If none is defined, JND is used instead.
+          //
+          // If we're already showing a fallback and it gets "retried", allowing us to show
+          // another level, but there's still an inner boundary that would show a fallback,
+          // then we suspend/restart for 500ms since the last time we showed a fallback
+          // anywhere in the tree. This effectively throttles progressive loading into a
+          // consistent train of commits. This also gives us an opportunity to restart to
+          // get to the completed state slightly earlier.
+          //
+          // If there's ambiguity due to batching it's resolved in preference of:
+          // 1) "delayed", 2) "initial render", 3) "retry".
+          //
+          // We want to ensure that a "busy" state doesn't get force committed. We want to
+          // ensure that new initial loading states can commit as soon as possible.
+
+
+          attachPingListener(root, renderExpirationTime, thenable);
+          _workInProgress.effectTag |= ShouldCapture;
+          _workInProgress.expirationTime = renderExpirationTime;
+          return;
+        } // This boundary already captured during this render. Continue to the next
+        // boundary.
+
+
+        _workInProgress = _workInProgress.return;
+      } while (_workInProgress !== null); // No boundary was found. Fallthrough to error mode.
+      // TODO: Use invariant so the message is stripped in prod?
+
+
+      value = new Error((getComponentName(sourceFiber.type) || 'A React component') + ' suspended while rendering, but no fallback UI was specified.\n' + '\n' + 'Add a <Suspense fallback=...> component higher in the tree to ' + 'provide a loading indicator or placeholder to display.' + getStackByFiberInDevAndProd(sourceFiber));
+    } // We didn't find a boundary that could handle this type of exception. Start
+    // over and traverse parent path again, this time treating the exception
+    // as an error.
+
+
+    renderDidError();
+    value = createCapturedValue(value, sourceFiber);
+    var workInProgress = returnFiber;
+
+    do {
+      switch (workInProgress.tag) {
+        case HostRoot:
+          {
+            var _errorInfo = value;
+            workInProgress.effectTag |= ShouldCapture;
+            workInProgress.expirationTime = renderExpirationTime;
+
+            var _update = createRootErrorUpdate(workInProgress, _errorInfo, renderExpirationTime);
+
+            enqueueCapturedUpdate(workInProgress, _update);
+            return;
+          }
+
+        case ClassComponent:
+          // Capture and retry
+          var errorInfo = value;
+          var ctor = workInProgress.type;
+          var instance = workInProgress.stateNode;
+
+          if ((workInProgress.effectTag & DidCapture) === NoEffect && (typeof ctor.getDerivedStateFromError === 'function' || instance !== null && typeof instance.componentDidCatch === 'function' && !isAlreadyFailedLegacyErrorBoundary(instance))) {
+            workInProgress.effectTag |= ShouldCapture;
+            workInProgress.expirationTime = renderExpirationTime; // Schedule the error boundary to re-render using updated state
+
+            var _update2 = createClassErrorUpdate(workInProgress, errorInfo, renderExpirationTime);
+
+            enqueueCapturedUpdate(workInProgress, _update2);
+            return;
+          }
+
+          break;
+      }
+
+      workInProgress = workInProgress.return;
+    } while (workInProgress !== null);
+  }
+
+  var ceil = Math.ceil;
+  var ReactCurrentDispatcher$1 = ReactSharedInternals.ReactCurrentDispatcher,
+      ReactCurrentOwner$2 = ReactSharedInternals.ReactCurrentOwner,
+      IsSomeRendererActing = ReactSharedInternals.IsSomeRendererActing;
+  var NoContext =
+  /*                    */
+  0;
+  var BatchedContext =
+  /*               */
+  1;
+  var EventContext =
+  /*                 */
+  2;
+  var DiscreteEventContext =
+  /*         */
+  4;
+  var LegacyUnbatchedContext =
+  /*       */
+  8;
+  var RenderContext =
+  /*                */
+  16;
+  var CommitContext =
+  /*                */
+  32;
+  var RootIncomplete = 0;
+  var RootFatalErrored = 1;
+  var RootErrored = 2;
+  var RootSuspended = 3;
+  var RootSuspendedWithDelay = 4;
+  var RootCompleted = 5;
+  // Describes where we are in the React execution stack
+  var executionContext = NoContext; // The root we're working on
+
+  var workInProgressRoot = null; // The fiber we're working on
+
+  var workInProgress = null; // The expiration time we're rendering
+
+  var renderExpirationTime$1 = NoWork; // Whether to root completed, errored, suspended, etc.
+
+  var workInProgressRootExitStatus = RootIncomplete; // A fatal error, if one is thrown
+
+  var workInProgressRootFatalError = null; // Most recent event time among processed updates during this render.
+  // This is conceptually a time stamp but expressed in terms of an ExpirationTime
+  // because we deal mostly with expiration times in the hot path, so this avoids
+  // the conversion happening in the hot path.
+
+  var workInProgressRootLatestProcessedExpirationTime = Sync;
+  var workInProgressRootLatestSuspenseTimeout = Sync;
+  var workInProgressRootCanSuspendUsingConfig = null; // The work left over by components that were visited during this render. Only
+  // includes unprocessed updates, not work in bailed out children.
+
+  var workInProgressRootNextUnprocessedUpdateTime = NoWork; // If we're pinged while rendering we don't always restart immediately.
+  // This flag determines if it might be worthwhile to restart if an opportunity
+  // happens latere.
+
+  var workInProgressRootHasPendingPing = false; // The most recent time we committed a fallback. This lets us ensure a train
+  // model where we don't commit new loading states in too quick succession.
+
+  var globalMostRecentFallbackTime = 0;
+  var FALLBACK_THROTTLE_MS = 500;
+  var nextEffect = null;
+  var hasUncaughtError = false;
+  var firstUncaughtError = null;
+  var legacyErrorBoundariesThatAlreadyFailed = null;
+  var rootDoesHavePassiveEffects = false;
+  var rootWithPendingPassiveEffects = null;
+  var pendingPassiveEffectsRenderPriority = NoPriority;
+  var pendingPassiveEffectsExpirationTime = NoWork;
+  var rootsWithPendingDiscreteUpdates = null; // Use these to prevent an infinite loop of nested updates
+
+  var NESTED_UPDATE_LIMIT = 50;
+  var nestedUpdateCount = 0;
+  var rootWithNestedUpdates = null;
+  var NESTED_PASSIVE_UPDATE_LIMIT = 50;
+  var nestedPassiveUpdateCount = 0;
+  var interruptedBy = null; // Marks the need to reschedule pending interactions at these expiration times
+  // during the commit phase. This enables them to be traced across components
+  // that spawn new work during render. E.g. hidden boundaries, suspended SSR
+  // hydration or SuspenseList.
+
+  var spawnedWorkDuringRender = null; // Expiration times are computed by adding to the current time (the start
+  // time). However, if two updates are scheduled within the same event, we
+  // should treat their start times as simultaneous, even if the actual clock
+  // time has advanced between the first and second call.
+  // In other words, because expiration times determine how updates are batched,
+  // we want all updates of like priority that occur within the same event to
+  // receive the same expiration time. Otherwise we get tearing.
+
+  var currentEventTime = NoWork;
+  function requestCurrentTimeForUpdate() {
+    if ((executionContext & (RenderContext | CommitContext)) !== NoContext) {
+      // We're inside React, so it's fine to read the actual time.
+      return msToExpirationTime(now());
+    } // We're not inside React, so we may be in the middle of a browser event.
+
+
+    if (currentEventTime !== NoWork) {
+      // Use the same start time for all updates until we enter React again.
+      return currentEventTime;
+    } // This is the first update since React yielded. Compute a new start time.
+
+
+    currentEventTime = msToExpirationTime(now());
+    return currentEventTime;
+  }
+  function getCurrentTime() {
+    return msToExpirationTime(now());
+  }
+  function computeExpirationForFiber(currentTime, fiber, suspenseConfig) {
+    var mode = fiber.mode;
+
+    if ((mode & BlockingMode) === NoMode) {
+      return Sync;
+    }
+
+    var priorityLevel = getCurrentPriorityLevel();
+
+    if ((mode & ConcurrentMode) === NoMode) {
+      return priorityLevel === ImmediatePriority ? Sync : Batched;
+    }
+
+    if ((executionContext & RenderContext) !== NoContext) {
+      // Use whatever time we're already rendering
+      // TODO: Should there be a way to opt out, like with `runWithPriority`?
+      return renderExpirationTime$1;
+    }
+
+    var expirationTime;
+
+    if (suspenseConfig !== null) {
+      // Compute an expiration time based on the Suspense timeout.
+      expirationTime = computeSuspenseExpiration(currentTime, suspenseConfig.timeoutMs | 0 || LOW_PRIORITY_EXPIRATION);
+    } else {
+      // Compute an expiration time based on the Scheduler priority.
+      switch (priorityLevel) {
+        case ImmediatePriority:
+          expirationTime = Sync;
+          break;
+
+        case UserBlockingPriority$1:
+          // TODO: Rename this to computeUserBlockingExpiration
+          expirationTime = computeInteractiveExpiration(currentTime);
+          break;
+
+        case NormalPriority:
+        case LowPriority:
+          // TODO: Handle LowPriority
+          // TODO: Rename this to... something better.
+          expirationTime = computeAsyncExpiration(currentTime);
+          break;
+
+        case IdlePriority:
+          expirationTime = Idle;
+          break;
+
+        default:
+          {
+            {
+              throw Error( "Expected a valid priority level" );
+            }
+          }
+
+      }
+    } // If we're in the middle of rendering a tree, do not update at the same
+    // expiration time that is already rendering.
+    // TODO: We shouldn't have to do this if the update is on a different root.
+    // Refactor computeExpirationForFiber + scheduleUpdate so we have access to
+    // the root when we check for this condition.
+
+
+    if (workInProgressRoot !== null && expirationTime === renderExpirationTime$1) {
+      // This is a trick to move this update into a separate batch
+      expirationTime -= 1;
+    }
+
+    return expirationTime;
+  }
+  function scheduleUpdateOnFiber(fiber, expirationTime) {
+    checkForNestedUpdates();
+    warnAboutRenderPhaseUpdatesInDEV(fiber);
+    var root = markUpdateTimeFromFiberToRoot(fiber, expirationTime);
+
+    if (root === null) {
+      warnAboutUpdateOnUnmountedFiberInDEV(fiber);
+      return;
+    }
+
+    checkForInterruption(fiber, expirationTime);
+    recordScheduleUpdate(); // TODO: computeExpirationForFiber also reads the priority. Pass the
+    // priority as an argument to that function and this one.
+
+    var priorityLevel = getCurrentPriorityLevel();
+
+    if (expirationTime === Sync) {
+      if ( // Check if we're inside unbatchedUpdates
+      (executionContext & LegacyUnbatchedContext) !== NoContext && // Check if we're not already rendering
+      (executionContext & (RenderContext | CommitContext)) === NoContext) {
+        // Register pending interactions on the root to avoid losing traced interaction data.
+        schedulePendingInteractions(root, expirationTime); // This is a legacy edge case. The initial mount of a ReactDOM.render-ed
+        // root inside of batchedUpdates should be synchronous, but layout updates
+        // should be deferred until the end of the batch.
+
+        performSyncWorkOnRoot(root);
+      } else {
+        ensureRootIsScheduled(root);
+        schedulePendingInteractions(root, expirationTime);
+
+        if (executionContext === NoContext) {
+          // Flush the synchronous work now, unless we're already working or inside
+          // a batch. This is intentionally inside scheduleUpdateOnFiber instead of
+          // scheduleCallbackForFiber to preserve the ability to schedule a callback
+          // without immediately flushing it. We only do this for user-initiated
+          // updates, to preserve historical behavior of legacy mode.
+          flushSyncCallbackQueue();
+        }
+      }
+    } else {
+      ensureRootIsScheduled(root);
+      schedulePendingInteractions(root, expirationTime);
+    }
+
+    if ((executionContext & DiscreteEventContext) !== NoContext && ( // Only updates at user-blocking priority or greater are considered
+    // discrete, even inside a discrete event.
+    priorityLevel === UserBlockingPriority$1 || priorityLevel === ImmediatePriority)) {
+      // This is the result of a discrete event. Track the lowest priority
+      // discrete update per root so we can flush them early, if needed.
+      if (rootsWithPendingDiscreteUpdates === null) {
+        rootsWithPendingDiscreteUpdates = new Map([[root, expirationTime]]);
+      } else {
+        var lastDiscreteTime = rootsWithPendingDiscreteUpdates.get(root);
+
+        if (lastDiscreteTime === undefined || lastDiscreteTime > expirationTime) {
+          rootsWithPendingDiscreteUpdates.set(root, expirationTime);
+        }
+      }
+    }
+  }
+  var scheduleWork = scheduleUpdateOnFiber; // This is split into a separate function so we can mark a fiber with pending
+  // work without treating it as a typical update that originates from an event;
+  // e.g. retrying a Suspense boundary isn't an update, but it does schedule work
+  // on a fiber.
+
+  function markUpdateTimeFromFiberToRoot(fiber, expirationTime) {
+    // Update the source fiber's expiration time
+    if (fiber.expirationTime < expirationTime) {
+      fiber.expirationTime = expirationTime;
+    }
+
+    var alternate = fiber.alternate;
+
+    if (alternate !== null && alternate.expirationTime < expirationTime) {
+      alternate.expirationTime = expirationTime;
+    } // Walk the parent path to the root and update the child expiration time.
+
+
+    var node = fiber.return;
+    var root = null;
+
+    if (node === null && fiber.tag === HostRoot) {
+      root = fiber.stateNode;
+    } else {
+      while (node !== null) {
+        alternate = node.alternate;
+
+        if (node.childExpirationTime < expirationTime) {
+          node.childExpirationTime = expirationTime;
+
+          if (alternate !== null && alternate.childExpirationTime < expirationTime) {
+            alternate.childExpirationTime = expirationTime;
+          }
+        } else if (alternate !== null && alternate.childExpirationTime < expirationTime) {
+          alternate.childExpirationTime = expirationTime;
+        }
+
+        if (node.return === null && node.tag === HostRoot) {
+          root = node.stateNode;
+          break;
+        }
+
+        node = node.return;
+      }
+    }
+
+    if (root !== null) {
+      if (workInProgressRoot === root) {
+        // Received an update to a tree that's in the middle of rendering. Mark
+        // that's unprocessed work on this root.
+        markUnprocessedUpdateTime(expirationTime);
+
+        if (workInProgressRootExitStatus === RootSuspendedWithDelay) {
+          // The root already suspended with a delay, which means this render
+          // definitely won't finish. Since we have a new update, let's mark it as
+          // suspended now, right before marking the incoming update. This has the
+          // effect of interrupting the current render and switching to the update.
+          // TODO: This happens to work when receiving an update during the render
+          // phase, because of the trick inside computeExpirationForFiber to
+          // subtract 1 from `renderExpirationTime` to move it into a
+          // separate bucket. But we should probably model it with an exception,
+          // using the same mechanism we use to force hydration of a subtree.
+          // TODO: This does not account for low pri updates that were already
+          // scheduled before the root started rendering. Need to track the next
+          // pending expiration time (perhaps by backtracking the return path) and
+          // then trigger a restart in the `renderDidSuspendDelayIfPossible` path.
+          markRootSuspendedAtTime(root, renderExpirationTime$1);
+        }
+      } // Mark that the root has a pending update.
+
+
+      markRootUpdatedAtTime(root, expirationTime);
+    }
+
+    return root;
+  }
+
+  function getNextRootExpirationTimeToWorkOn(root) {
+    // Determines the next expiration time that the root should render, taking
+    // into account levels that may be suspended, or levels that may have
+    // received a ping.
+    var lastExpiredTime = root.lastExpiredTime;
+
+    if (lastExpiredTime !== NoWork) {
+      return lastExpiredTime;
+    } // "Pending" refers to any update that hasn't committed yet, including if it
+    // suspended. The "suspended" range is therefore a subset.
+
+
+    var firstPendingTime = root.firstPendingTime;
+
+    if (!isRootSuspendedAtTime(root, firstPendingTime)) {
+      // The highest priority pending time is not suspended. Let's work on that.
+      return firstPendingTime;
+    } // If the first pending time is suspended, check if there's a lower priority
+    // pending level that we know about. Or check if we received a ping. Work
+    // on whichever is higher priority.
+
+
+    var lastPingedTime = root.lastPingedTime;
+    var nextKnownPendingLevel = root.nextKnownPendingLevel;
+    var nextLevel = lastPingedTime > nextKnownPendingLevel ? lastPingedTime : nextKnownPendingLevel;
+
+    if ( nextLevel <= Idle && firstPendingTime !== nextLevel) {
+      // Don't work on Idle/Never priority unless everything else is committed.
+      return NoWork;
+    }
+
+    return nextLevel;
+  } // Use this function to schedule a task for a root. There's only one task per
+  // root; if a task was already scheduled, we'll check to make sure the
+  // expiration time of the existing task is the same as the expiration time of
+  // the next level that the root has work on. This function is called on every
+  // update, and right before exiting a task.
+
+
+  function ensureRootIsScheduled(root) {
+    var lastExpiredTime = root.lastExpiredTime;
+
+    if (lastExpiredTime !== NoWork) {
+      // Special case: Expired work should flush synchronously.
+      root.callbackExpirationTime = Sync;
+      root.callbackPriority = ImmediatePriority;
+      root.callbackNode = scheduleSyncCallback(performSyncWorkOnRoot.bind(null, root));
+      return;
+    }
+
+    var expirationTime = getNextRootExpirationTimeToWorkOn(root);
+    var existingCallbackNode = root.callbackNode;
+
+    if (expirationTime === NoWork) {
+      // There's nothing to work on.
+      if (existingCallbackNode !== null) {
+        root.callbackNode = null;
+        root.callbackExpirationTime = NoWork;
+        root.callbackPriority = NoPriority;
+      }
+
+      return;
+    } // TODO: If this is an update, we already read the current time. Pass the
+    // time as an argument.
+
+
+    var currentTime = requestCurrentTimeForUpdate();
+    var priorityLevel = inferPriorityFromExpirationTime(currentTime, expirationTime); // If there's an existing render task, confirm it has the correct priority and
+    // expiration time. Otherwise, we'll cancel it and schedule a new one.
+
+    if (existingCallbackNode !== null) {
+      var existingCallbackPriority = root.callbackPriority;
+      var existingCallbackExpirationTime = root.callbackExpirationTime;
+
+      if ( // Callback must have the exact same expiration time.
+      existingCallbackExpirationTime === expirationTime && // Callback must have greater or equal priority.
+      existingCallbackPriority >= priorityLevel) {
+        // Existing callback is sufficient.
+        return;
+      } // Need to schedule a new task.
+      // TODO: Instead of scheduling a new task, we should be able to change the
+      // priority of the existing one.
+
+
+      cancelCallback(existingCallbackNode);
+    }
+
+    root.callbackExpirationTime = expirationTime;
+    root.callbackPriority = priorityLevel;
+    var callbackNode;
+
+    if (expirationTime === Sync) {
+      // Sync React callbacks are scheduled on a special internal queue
+      callbackNode = scheduleSyncCallback(performSyncWorkOnRoot.bind(null, root));
+    } else {
+      callbackNode = scheduleCallback(priorityLevel, performConcurrentWorkOnRoot.bind(null, root), // Compute a task timeout based on the expiration time. This also affects
+      // ordering because tasks are processed in timeout order.
+      {
+        timeout: expirationTimeToMs(expirationTime) - now()
+      });
+    }
+
+    root.callbackNode = callbackNode;
+  } // This is the entry point for every concurrent task, i.e. anything that
+  // goes through Scheduler.
+
+
+  function performConcurrentWorkOnRoot(root, didTimeout) {
+    // Since we know we're in a React event, we can clear the current
+    // event time. The next update will compute a new event time.
+    currentEventTime = NoWork;
+
+    if (didTimeout) {
+      // The render task took too long to complete. Mark the current time as
+      // expired to synchronously render all expired work in a single batch.
+      var currentTime = requestCurrentTimeForUpdate();
+      markRootExpiredAtTime(root, currentTime); // This will schedule a synchronous callback.
+
+      ensureRootIsScheduled(root);
+      return null;
+    } // Determine the next expiration time to work on, using the fields stored
+    // on the root.
+
+
+    var expirationTime = getNextRootExpirationTimeToWorkOn(root);
+
+    if (expirationTime !== NoWork) {
+      var originalCallbackNode = root.callbackNode;
+
+      if (!((executionContext & (RenderContext | CommitContext)) === NoContext)) {
+        {
+          throw Error( "Should not already be working." );
+        }
+      }
+
+      flushPassiveEffects(); // If the root or expiration time have changed, throw out the existing stack
+      // and prepare a fresh one. Otherwise we'll continue where we left off.
+
+      if (root !== workInProgressRoot || expirationTime !== renderExpirationTime$1) {
+        prepareFreshStack(root, expirationTime);
+        startWorkOnPendingInteractions(root, expirationTime);
+      } // If we have a work-in-progress fiber, it means there's still work to do
+      // in this root.
+
+
+      if (workInProgress !== null) {
+        var prevExecutionContext = executionContext;
+        executionContext |= RenderContext;
+        var prevDispatcher = pushDispatcher();
+        var prevInteractions = pushInteractions(root);
+        startWorkLoopTimer(workInProgress);
+
+        do {
+          try {
+            workLoopConcurrent();
+            break;
+          } catch (thrownValue) {
+            handleError(root, thrownValue);
+          }
+        } while (true);
+
+        resetContextDependencies();
+        executionContext = prevExecutionContext;
+        popDispatcher(prevDispatcher);
+
+        {
+          popInteractions(prevInteractions);
+        }
+
+        if (workInProgressRootExitStatus === RootFatalErrored) {
+          var fatalError = workInProgressRootFatalError;
+          stopInterruptedWorkLoopTimer();
+          prepareFreshStack(root, expirationTime);
+          markRootSuspendedAtTime(root, expirationTime);
+          ensureRootIsScheduled(root);
+          throw fatalError;
+        }
+
+        if (workInProgress !== null) {
+          // There's still work left over. Exit without committing.
+          stopInterruptedWorkLoopTimer();
+        } else {
+          // We now have a consistent tree. The next step is either to commit it,
+          // or, if something suspended, wait to commit it after a timeout.
+          stopFinishedWorkLoopTimer();
+          var finishedWork = root.finishedWork = root.current.alternate;
+          root.finishedExpirationTime = expirationTime;
+          finishConcurrentRender(root, finishedWork, workInProgressRootExitStatus, expirationTime);
+        }
+
+        ensureRootIsScheduled(root);
+
+        if (root.callbackNode === originalCallbackNode) {
+          // The task node scheduled for this root is the same one that's
+          // currently executed. Need to return a continuation.
+          return performConcurrentWorkOnRoot.bind(null, root);
+        }
+      }
+    }
+
+    return null;
+  }
+
+  function finishConcurrentRender(root, finishedWork, exitStatus, expirationTime) {
+    // Set this to null to indicate there's no in-progress render.
+    workInProgressRoot = null;
+
+    switch (exitStatus) {
+      case RootIncomplete:
+      case RootFatalErrored:
+        {
+          {
+            {
+              throw Error( "Root did not complete. This is a bug in React." );
+            }
+          }
+        }
+      // Flow knows about invariant, so it complains if I add a break
+      // statement, but eslint doesn't know about invariant, so it complains
+      // if I do. eslint-disable-next-line no-fallthrough
+
+      case RootErrored:
+        {
+          // If this was an async render, the error may have happened due to
+          // a mutation in a concurrent event. Try rendering one more time,
+          // synchronously, to see if the error goes away. If there are
+          // lower priority updates, let's include those, too, in case they
+          // fix the inconsistency. Render at Idle to include all updates.
+          // If it was Idle or Never or some not-yet-invented time, render
+          // at that time.
+          markRootExpiredAtTime(root, expirationTime > Idle ? Idle : expirationTime); // We assume that this second render pass will be synchronous
+          // and therefore not hit this path again.
+
+          break;
+        }
+
+      case RootSuspended:
+        {
+          markRootSuspendedAtTime(root, expirationTime);
+          var lastSuspendedTime = root.lastSuspendedTime;
+
+          if (expirationTime === lastSuspendedTime) {
+            root.nextKnownPendingLevel = getRemainingExpirationTime(finishedWork);
+          } // We have an acceptable loading state. We need to figure out if we
+          // should immediately commit it or wait a bit.
+          // If we have processed new updates during this render, we may now
+          // have a new loading state ready. We want to ensure that we commit
+          // that as soon as possible.
+
+
+          var hasNotProcessedNewUpdates = workInProgressRootLatestProcessedExpirationTime === Sync;
+
+          if (hasNotProcessedNewUpdates && // do not delay if we're inside an act() scope
+          !( IsThisRendererActing.current)) {
+            // If we have not processed any new updates during this pass, then
+            // this is either a retry of an existing fallback state or a
+            // hidden tree. Hidden trees shouldn't be batched with other work
+            // and after that's fixed it can only be a retry. We're going to
+            // throttle committing retries so that we don't show too many
+            // loading states too quickly.
+            var msUntilTimeout = globalMostRecentFallbackTime + FALLBACK_THROTTLE_MS - now(); // Don't bother with a very short suspense time.
+
+            if (msUntilTimeout > 10) {
+              if (workInProgressRootHasPendingPing) {
+                var lastPingedTime = root.lastPingedTime;
+
+                if (lastPingedTime === NoWork || lastPingedTime >= expirationTime) {
+                  // This render was pinged but we didn't get to restart
+                  // earlier so try restarting now instead.
+                  root.lastPingedTime = expirationTime;
+                  prepareFreshStack(root, expirationTime);
+                  break;
+                }
+              }
+
+              var nextTime = getNextRootExpirationTimeToWorkOn(root);
+
+              if (nextTime !== NoWork && nextTime !== expirationTime) {
+                // There's additional work on this root.
+                break;
+              }
+
+              if (lastSuspendedTime !== NoWork && lastSuspendedTime !== expirationTime) {
+                // We should prefer to render the fallback of at the last
+                // suspended level. Ping the last suspended level to try
+                // rendering it again.
+                root.lastPingedTime = lastSuspendedTime;
+                break;
+              } // The render is suspended, it hasn't timed out, and there's no
+              // lower priority work to do. Instead of committing the fallback
+              // immediately, wait for more data to arrive.
+
+
+              root.timeoutHandle = scheduleTimeout(commitRoot.bind(null, root), msUntilTimeout);
+              break;
+            }
+          } // The work expired. Commit immediately.
+
+
+          commitRoot(root);
+          break;
+        }
+
+      case RootSuspendedWithDelay:
+        {
+          markRootSuspendedAtTime(root, expirationTime);
+          var _lastSuspendedTime = root.lastSuspendedTime;
+
+          if (expirationTime === _lastSuspendedTime) {
+            root.nextKnownPendingLevel = getRemainingExpirationTime(finishedWork);
+          }
+
+          if ( // do not delay if we're inside an act() scope
+          !( IsThisRendererActing.current)) {
+            // We're suspended in a state that should be avoided. We'll try to
+            // avoid committing it for as long as the timeouts let us.
+            if (workInProgressRootHasPendingPing) {
+              var _lastPingedTime = root.lastPingedTime;
+
+              if (_lastPingedTime === NoWork || _lastPingedTime >= expirationTime) {
+                // This render was pinged but we didn't get to restart earlier
+                // so try restarting now instead.
+                root.lastPingedTime = expirationTime;
+                prepareFreshStack(root, expirationTime);
+                break;
+              }
+            }
+
+            var _nextTime = getNextRootExpirationTimeToWorkOn(root);
+
+            if (_nextTime !== NoWork && _nextTime !== expirationTime) {
+              // There's additional work on this root.
+              break;
+            }
+
+            if (_lastSuspendedTime !== NoWork && _lastSuspendedTime !== expirationTime) {
+              // We should prefer to render the fallback of at the last
+              // suspended level. Ping the last suspended level to try
+              // rendering it again.
+              root.lastPingedTime = _lastSuspendedTime;
+              break;
+            }
+
+            var _msUntilTimeout;
+
+            if (workInProgressRootLatestSuspenseTimeout !== Sync) {
+              // We have processed a suspense config whose expiration time we
+              // can use as the timeout.
+              _msUntilTimeout = expirationTimeToMs(workInProgressRootLatestSuspenseTimeout) - now();
+            } else if (workInProgressRootLatestProcessedExpirationTime === Sync) {
+              // This should never normally happen because only new updates
+              // cause delayed states, so we should have processed something.
+              // However, this could also happen in an offscreen tree.
+              _msUntilTimeout = 0;
+            } else {
+              // If we don't have a suspense config, we're going to use a
+              // heuristic to determine how long we can suspend.
+              var eventTimeMs = inferTimeFromExpirationTime(workInProgressRootLatestProcessedExpirationTime);
+              var currentTimeMs = now();
+              var timeUntilExpirationMs = expirationTimeToMs(expirationTime) - currentTimeMs;
+              var timeElapsed = currentTimeMs - eventTimeMs;
+
+              if (timeElapsed < 0) {
+                // We get this wrong some time since we estimate the time.
+                timeElapsed = 0;
+              }
+
+              _msUntilTimeout = jnd(timeElapsed) - timeElapsed; // Clamp the timeout to the expiration time. TODO: Once the
+              // event time is exact instead of inferred from expiration time
+              // we don't need this.
+
+              if (timeUntilExpirationMs < _msUntilTimeout) {
+                _msUntilTimeout = timeUntilExpirationMs;
+              }
+            } // Don't bother with a very short suspense time.
+
+
+            if (_msUntilTimeout > 10) {
+              // The render is suspended, it hasn't timed out, and there's no
+              // lower priority work to do. Instead of committing the fallback
+              // immediately, wait for more data to arrive.
+              root.timeoutHandle = scheduleTimeout(commitRoot.bind(null, root), _msUntilTimeout);
+              break;
+            }
+          } // The work expired. Commit immediately.
+
+
+          commitRoot(root);
+          break;
+        }
+
+      case RootCompleted:
+        {
+          // The work completed. Ready to commit.
+          if ( // do not delay if we're inside an act() scope
+          !( IsThisRendererActing.current) && workInProgressRootLatestProcessedExpirationTime !== Sync && workInProgressRootCanSuspendUsingConfig !== null) {
+            // If we have exceeded the minimum loading delay, which probably
+            // means we have shown a spinner already, we might have to suspend
+            // a bit longer to ensure that the spinner is shown for
+            // enough time.
+            var _msUntilTimeout2 = computeMsUntilSuspenseLoadingDelay(workInProgressRootLatestProcessedExpirationTime, expirationTime, workInProgressRootCanSuspendUsingConfig);
+
+            if (_msUntilTimeout2 > 10) {
+              markRootSuspendedAtTime(root, expirationTime);
+              root.timeoutHandle = scheduleTimeout(commitRoot.bind(null, root), _msUntilTimeout2);
+              break;
+            }
+          }
+
+          commitRoot(root);
+          break;
+        }
+
+      default:
+        {
+          {
+            {
+              throw Error( "Unknown root exit status." );
+            }
+          }
+        }
+    }
+  } // This is the entry point for synchronous tasks that don't go
+  // through Scheduler
+
+
+  function performSyncWorkOnRoot(root) {
+    // Check if there's expired work on this root. Otherwise, render at Sync.
+    var lastExpiredTime = root.lastExpiredTime;
+    var expirationTime = lastExpiredTime !== NoWork ? lastExpiredTime : Sync;
+
+    if (!((executionContext & (RenderContext | CommitContext)) === NoContext)) {
+      {
+        throw Error( "Should not already be working." );
+      }
+    }
+
+    flushPassiveEffects(); // If the root or expiration time have changed, throw out the existing stack
+    // and prepare a fresh one. Otherwise we'll continue where we left off.
+
+    if (root !== workInProgressRoot || expirationTime !== renderExpirationTime$1) {
+      prepareFreshStack(root, expirationTime);
+      startWorkOnPendingInteractions(root, expirationTime);
+    } // If we have a work-in-progress fiber, it means there's still work to do
+    // in this root.
+
+
+    if (workInProgress !== null) {
+      var prevExecutionContext = executionContext;
+      executionContext |= RenderContext;
+      var prevDispatcher = pushDispatcher();
+      var prevInteractions = pushInteractions(root);
+      startWorkLoopTimer(workInProgress);
+
+      do {
+        try {
+          workLoopSync();
+          break;
+        } catch (thrownValue) {
+          handleError(root, thrownValue);
+        }
+      } while (true);
+
+      resetContextDependencies();
+      executionContext = prevExecutionContext;
+      popDispatcher(prevDispatcher);
+
+      {
+        popInteractions(prevInteractions);
+      }
+
+      if (workInProgressRootExitStatus === RootFatalErrored) {
+        var fatalError = workInProgressRootFatalError;
+        stopInterruptedWorkLoopTimer();
+        prepareFreshStack(root, expirationTime);
+        markRootSuspendedAtTime(root, expirationTime);
+        ensureRootIsScheduled(root);
+        throw fatalError;
+      }
+
+      if (workInProgress !== null) {
+        // This is a sync render, so we should have finished the whole tree.
+        {
+          {
+            throw Error( "Cannot commit an incomplete root. This error is likely caused by a bug in React. Please file an issue." );
+          }
+        }
+      } else {
+        // We now have a consistent tree. Because this is a sync render, we
+        // will commit it even if something suspended.
+        stopFinishedWorkLoopTimer();
+        root.finishedWork = root.current.alternate;
+        root.finishedExpirationTime = expirationTime;
+        finishSyncRender(root);
+      } // Before exiting, make sure there's a callback scheduled for the next
+      // pending level.
+
+
+      ensureRootIsScheduled(root);
+    }
+
+    return null;
+  }
+
+  function finishSyncRender(root) {
+    // Set this to null to indicate there's no in-progress render.
+    workInProgressRoot = null;
+    commitRoot(root);
+  }
+  function flushDiscreteUpdates() {
+    // TODO: Should be able to flush inside batchedUpdates, but not inside `act`.
+    // However, `act` uses `batchedUpdates`, so there's no way to distinguish
+    // those two cases. Need to fix this before exposing flushDiscreteUpdates
+    // as a public API.
+    if ((executionContext & (BatchedContext | RenderContext | CommitContext)) !== NoContext) {
+      {
+        if ((executionContext & RenderContext) !== NoContext) {
+          error('unstable_flushDiscreteUpdates: Cannot flush updates when React is ' + 'already rendering.');
+        }
+      } // We're already rendering, so we can't synchronously flush pending work.
+      // This is probably a nested event dispatch triggered by a lifecycle/effect,
+      // like `el.focus()`. Exit.
+
+
+      return;
+    }
+
+    flushPendingDiscreteUpdates(); // If the discrete updates scheduled passive effects, flush them now so that
+    // they fire before the next serial event.
+
+    flushPassiveEffects();
+  }
+  function syncUpdates(fn, a, b, c) {
+    return runWithPriority$1(ImmediatePriority, fn.bind(null, a, b, c));
+  }
+
+  function flushPendingDiscreteUpdates() {
+    if (rootsWithPendingDiscreteUpdates !== null) {
+      // For each root with pending discrete updates, schedule a callback to
+      // immediately flush them.
+      var roots = rootsWithPendingDiscreteUpdates;
+      rootsWithPendingDiscreteUpdates = null;
+      roots.forEach(function (expirationTime, root) {
+        markRootExpiredAtTime(root, expirationTime);
+        ensureRootIsScheduled(root);
+      }); // Now flush the immediate queue.
+
+      flushSyncCallbackQueue();
+    }
+  }
+
+  function batchedUpdates$1(fn, a) {
+    var prevExecutionContext = executionContext;
+    executionContext |= BatchedContext;
+
+    try {
+      return fn(a);
+    } finally {
+      executionContext = prevExecutionContext;
+
+      if (executionContext === NoContext) {
+        // Flush the immediate callbacks that were scheduled during this batch
+        flushSyncCallbackQueue();
+      }
+    }
+  }
+  function batchedEventUpdates$1(fn, a) {
+    var prevExecutionContext = executionContext;
+    executionContext |= EventContext;
+
+    try {
+      return fn(a);
+    } finally {
+      executionContext = prevExecutionContext;
+
+      if (executionContext === NoContext) {
+        // Flush the immediate callbacks that were scheduled during this batch
+        flushSyncCallbackQueue();
+      }
+    }
+  }
+  function discreteUpdates$1(fn, a, b, c, d) {
+    var prevExecutionContext = executionContext;
+    executionContext |= DiscreteEventContext;
+
+    try {
+      // Should this
+      return runWithPriority$1(UserBlockingPriority$1, fn.bind(null, a, b, c, d));
+    } finally {
+      executionContext = prevExecutionContext;
+
+      if (executionContext === NoContext) {
+        // Flush the immediate callbacks that were scheduled during this batch
+        flushSyncCallbackQueue();
+      }
+    }
+  }
+  function unbatchedUpdates(fn, a) {
+    var prevExecutionContext = executionContext;
+    executionContext &= ~BatchedContext;
+    executionContext |= LegacyUnbatchedContext;
+
+    try {
+      return fn(a);
+    } finally {
+      executionContext = prevExecutionContext;
+
+      if (executionContext === NoContext) {
+        // Flush the immediate callbacks that were scheduled during this batch
+        flushSyncCallbackQueue();
+      }
+    }
+  }
+  function flushSync(fn, a) {
+    if ((executionContext & (RenderContext | CommitContext)) !== NoContext) {
+      {
+        {
+          throw Error( "flushSync was called from inside a lifecycle method. It cannot be called when React is already rendering." );
+        }
+      }
+    }
+
+    var prevExecutionContext = executionContext;
+    executionContext |= BatchedContext;
+
+    try {
+      return runWithPriority$1(ImmediatePriority, fn.bind(null, a));
+    } finally {
+      executionContext = prevExecutionContext; // Flush the immediate callbacks that were scheduled during this batch.
+      // Note that this will happen even if batchedUpdates is higher up
+      // the stack.
+
+      flushSyncCallbackQueue();
+    }
+  }
+
+  function prepareFreshStack(root, expirationTime) {
+    root.finishedWork = null;
+    root.finishedExpirationTime = NoWork;
+    var timeoutHandle = root.timeoutHandle;
+
+    if (timeoutHandle !== noTimeout) {
+      // The root previous suspended and scheduled a timeout to commit a fallback
+      // state. Now that we have additional work, cancel the timeout.
+      root.timeoutHandle = noTimeout; // $FlowFixMe Complains noTimeout is not a TimeoutID, despite the check above
+
+      cancelTimeout(timeoutHandle);
+    }
+
+    if (workInProgress !== null) {
+      var interruptedWork = workInProgress.return;
+
+      while (interruptedWork !== null) {
+        unwindInterruptedWork(interruptedWork);
+        interruptedWork = interruptedWork.return;
+      }
+    }
+
+    workInProgressRoot = root;
+    workInProgress = createWorkInProgress(root.current, null);
+    renderExpirationTime$1 = expirationTime;
+    workInProgressRootExitStatus = RootIncomplete;
+    workInProgressRootFatalError = null;
+    workInProgressRootLatestProcessedExpirationTime = Sync;
+    workInProgressRootLatestSuspenseTimeout = Sync;
+    workInProgressRootCanSuspendUsingConfig = null;
+    workInProgressRootNextUnprocessedUpdateTime = NoWork;
+    workInProgressRootHasPendingPing = false;
+
+    {
+      spawnedWorkDuringRender = null;
+    }
+
+    {
+      ReactStrictModeWarnings.discardPendingWarnings();
+    }
+  }
+
+  function handleError(root, thrownValue) {
+    do {
+      try {
+        // Reset module-level state that was set during the render phase.
+        resetContextDependencies();
+        resetHooksAfterThrow();
+        resetCurrentFiber();
+
+        if (workInProgress === null || workInProgress.return === null) {
+          // Expected to be working on a non-root fiber. This is a fatal error
+          // because there's no ancestor that can handle it; the root is
+          // supposed to capture all errors that weren't caught by an error
+          // boundary.
+          workInProgressRootExitStatus = RootFatalErrored;
+          workInProgressRootFatalError = thrownValue; // Set `workInProgress` to null. This represents advancing to the next
+          // sibling, or the parent if there are no siblings. But since the root
+          // has no siblings nor a parent, we set it to null. Usually this is
+          // handled by `completeUnitOfWork` or `unwindWork`, but since we're
+          // interntionally not calling those, we need set it here.
+          // TODO: Consider calling `unwindWork` to pop the contexts.
+
+          workInProgress = null;
+          return null;
+        }
+
+        if (enableProfilerTimer && workInProgress.mode & ProfileMode) {
+          // Record the time spent rendering before an error was thrown. This
+          // avoids inaccurate Profiler durations in the case of a
+          // suspended render.
+          stopProfilerTimerIfRunningAndRecordDelta(workInProgress, true);
+        }
+
+        throwException(root, workInProgress.return, workInProgress, thrownValue, renderExpirationTime$1);
+        workInProgress = completeUnitOfWork(workInProgress);
+      } catch (yetAnotherThrownValue) {
+        // Something in the return path also threw.
+        thrownValue = yetAnotherThrownValue;
+        continue;
+      } // Return to the normal work loop.
+
+
+      return;
+    } while (true);
+  }
+
+  function pushDispatcher(root) {
+    var prevDispatcher = ReactCurrentDispatcher$1.current;
+    ReactCurrentDispatcher$1.current = ContextOnlyDispatcher;
+
+    if (prevDispatcher === null) {
+      // The React isomorphic package does not include a default dispatcher.
+      // Instead the first renderer will lazily attach one, in order to give
+      // nicer error messages.
+      return ContextOnlyDispatcher;
+    } else {
+      return prevDispatcher;
+    }
+  }
+
+  function popDispatcher(prevDispatcher) {
+    ReactCurrentDispatcher$1.current = prevDispatcher;
+  }
+
+  function pushInteractions(root) {
+    {
+      var prevInteractions = __interactionsRef.current;
+      __interactionsRef.current = root.memoizedInteractions;
+      return prevInteractions;
+    }
+  }
+
+  function popInteractions(prevInteractions) {
+    {
+      __interactionsRef.current = prevInteractions;
+    }
+  }
+
+  function markCommitTimeOfFallback() {
+    globalMostRecentFallbackTime = now();
+  }
+  function markRenderEventTimeAndConfig(expirationTime, suspenseConfig) {
+    if (expirationTime < workInProgressRootLatestProcessedExpirationTime && expirationTime > Idle) {
+      workInProgressRootLatestProcessedExpirationTime = expirationTime;
+    }
+
+    if (suspenseConfig !== null) {
+      if (expirationTime < workInProgressRootLatestSuspenseTimeout && expirationTime > Idle) {
+        workInProgressRootLatestSuspenseTimeout = expirationTime; // Most of the time we only have one config and getting wrong is not bad.
+
+        workInProgressRootCanSuspendUsingConfig = suspenseConfig;
+      }
+    }
+  }
+  function markUnprocessedUpdateTime(expirationTime) {
+    if (expirationTime > workInProgressRootNextUnprocessedUpdateTime) {
+      workInProgressRootNextUnprocessedUpdateTime = expirationTime;
+    }
+  }
+  function renderDidSuspend() {
+    if (workInProgressRootExitStatus === RootIncomplete) {
+      workInProgressRootExitStatus = RootSuspended;
+    }
+  }
+  function renderDidSuspendDelayIfPossible() {
+    if (workInProgressRootExitStatus === RootIncomplete || workInProgressRootExitStatus === RootSuspended) {
+      workInProgressRootExitStatus = RootSuspendedWithDelay;
+    } // Check if there's a lower priority update somewhere else in the tree.
+
+
+    if (workInProgressRootNextUnprocessedUpdateTime !== NoWork && workInProgressRoot !== null) {
+      // Mark the current render as suspended, and then mark that there's a
+      // pending update.
+      // TODO: This should immediately interrupt the current render, instead
+      // of waiting until the next time we yield.
+      markRootSuspendedAtTime(workInProgressRoot, renderExpirationTime$1);
+      markRootUpdatedAtTime(workInProgressRoot, workInProgressRootNextUnprocessedUpdateTime);
+    }
+  }
+  function renderDidError() {
+    if (workInProgressRootExitStatus !== RootCompleted) {
+      workInProgressRootExitStatus = RootErrored;
+    }
+  } // Called during render to determine if anything has suspended.
+  // Returns false if we're not sure.
+
+  function renderHasNotSuspendedYet() {
+    // If something errored or completed, we can't really be sure,
+    // so those are false.
+    return workInProgressRootExitStatus === RootIncomplete;
+  }
+
+  function inferTimeFromExpirationTime(expirationTime) {
+    // We don't know exactly when the update was scheduled, but we can infer an
+    // approximate start time from the expiration time.
+    var earliestExpirationTimeMs = expirationTimeToMs(expirationTime);
+    return earliestExpirationTimeMs - LOW_PRIORITY_EXPIRATION;
+  }
+
+  function inferTimeFromExpirationTimeWithSuspenseConfig(expirationTime, suspenseConfig) {
+    // We don't know exactly when the update was scheduled, but we can infer an
+    // approximate start time from the expiration time by subtracting the timeout
+    // that was added to the event time.
+    var earliestExpirationTimeMs = expirationTimeToMs(expirationTime);
+    return earliestExpirationTimeMs - (suspenseConfig.timeoutMs | 0 || LOW_PRIORITY_EXPIRATION);
+  } // The work loop is an extremely hot path. Tell Closure not to inline it.
+
+  /** @noinline */
+
+
+  function workLoopSync() {
+    // Already timed out, so perform work without checking if we need to yield.
+    while (workInProgress !== null) {
+      workInProgress = performUnitOfWork(workInProgress);
+    }
+  }
+  /** @noinline */
+
+
+  function workLoopConcurrent() {
+    // Perform work until Scheduler asks us to yield
+    while (workInProgress !== null && !shouldYield()) {
+      workInProgress = performUnitOfWork(workInProgress);
+    }
+  }
+
+  function performUnitOfWork(unitOfWork) {
+    // The current, flushed, state of this fiber is the alternate. Ideally
+    // nothing should rely on this, but relying on it here means that we don't
+    // need an additional field on the work in progress.
+    var current = unitOfWork.alternate;
+    startWorkTimer(unitOfWork);
+    setCurrentFiber(unitOfWork);
+    var next;
+
+    if ( (unitOfWork.mode & ProfileMode) !== NoMode) {
+      startProfilerTimer(unitOfWork);
+      next = beginWork$1(current, unitOfWork, renderExpirationTime$1);
+      stopProfilerTimerIfRunningAndRecordDelta(unitOfWork, true);
+    } else {
+      next = beginWork$1(current, unitOfWork, renderExpirationTime$1);
+    }
+
+    resetCurrentFiber();
+    unitOfWork.memoizedProps = unitOfWork.pendingProps;
+
+    if (next === null) {
+      // If this doesn't spawn new work, complete the current work.
+      next = completeUnitOfWork(unitOfWork);
+    }
+
+    ReactCurrentOwner$2.current = null;
+    return next;
+  }
+
+  function completeUnitOfWork(unitOfWork) {
+    // Attempt to complete the current unit of work, then move to the next
+    // sibling. If there are no more siblings, return to the parent fiber.
+    workInProgress = unitOfWork;
+
+    do {
+      // The current, flushed, state of this fiber is the alternate. Ideally
+      // nothing should rely on this, but relying on it here means that we don't
+      // need an additional field on the work in progress.
+      var current = workInProgress.alternate;
+      var returnFiber = workInProgress.return; // Check if the work completed or if something threw.
+
+      if ((workInProgress.effectTag & Incomplete) === NoEffect) {
+        setCurrentFiber(workInProgress);
+        var next = void 0;
+
+        if ( (workInProgress.mode & ProfileMode) === NoMode) {
+          next = completeWork(current, workInProgress, renderExpirationTime$1);
+        } else {
+          startProfilerTimer(workInProgress);
+          next = completeWork(current, workInProgress, renderExpirationTime$1); // Update render duration assuming we didn't error.
+
+          stopProfilerTimerIfRunningAndRecordDelta(workInProgress, false);
+        }
+
+        stopWorkTimer(workInProgress);
+        resetCurrentFiber();
+        resetChildExpirationTime(workInProgress);
+
+        if (next !== null) {
+          // Completing this fiber spawned new work. Work on that next.
+          return next;
+        }
+
+        if (returnFiber !== null && // Do not append effects to parents if a sibling failed to complete
+        (returnFiber.effectTag & Incomplete) === NoEffect) {
+          // Append all the effects of the subtree and this fiber onto the effect
+          // list of the parent. The completion order of the children affects the
+          // side-effect order.
+          if (returnFiber.firstEffect === null) {
+            returnFiber.firstEffect = workInProgress.firstEffect;
+          }
+
+          if (workInProgress.lastEffect !== null) {
+            if (returnFiber.lastEffect !== null) {
+              returnFiber.lastEffect.nextEffect = workInProgress.firstEffect;
+            }
+
+            returnFiber.lastEffect = workInProgress.lastEffect;
+          } // If this fiber had side-effects, we append it AFTER the children's
+          // side-effects. We can perform certain side-effects earlier if needed,
+          // by doing multiple passes over the effect list. We don't want to
+          // schedule our own side-effect on our own list because if end up
+          // reusing children we'll schedule this effect onto itself since we're
+          // at the end.
+
+
+          var effectTag = workInProgress.effectTag; // Skip both NoWork and PerformedWork tags when creating the effect
+          // list. PerformedWork effect is read by React DevTools but shouldn't be
+          // committed.
+
+          if (effectTag > PerformedWork) {
+            if (returnFiber.lastEffect !== null) {
+              returnFiber.lastEffect.nextEffect = workInProgress;
+            } else {
+              returnFiber.firstEffect = workInProgress;
+            }
+
+            returnFiber.lastEffect = workInProgress;
+          }
+        }
+      } else {
+        // This fiber did not complete because something threw. Pop values off
+        // the stack without entering the complete phase. If this is a boundary,
+        // capture values if possible.
+        var _next = unwindWork(workInProgress); // Because this fiber did not complete, don't reset its expiration time.
+
+
+        if ( (workInProgress.mode & ProfileMode) !== NoMode) {
+          // Record the render duration for the fiber that errored.
+          stopProfilerTimerIfRunningAndRecordDelta(workInProgress, false); // Include the time spent working on failed children before continuing.
+
+          var actualDuration = workInProgress.actualDuration;
+          var child = workInProgress.child;
+
+          while (child !== null) {
+            actualDuration += child.actualDuration;
+            child = child.sibling;
+          }
+
+          workInProgress.actualDuration = actualDuration;
+        }
+
+        if (_next !== null) {
+          // If completing this work spawned new work, do that next. We'll come
+          // back here again.
+          // Since we're restarting, remove anything that is not a host effect
+          // from the effect tag.
+          // TODO: The name stopFailedWorkTimer is misleading because Suspense
+          // also captures and restarts.
+          stopFailedWorkTimer(workInProgress);
+          _next.effectTag &= HostEffectMask;
+          return _next;
+        }
+
+        stopWorkTimer(workInProgress);
+
+        if (returnFiber !== null) {
+          // Mark the parent fiber as incomplete and clear its effect list.
+          returnFiber.firstEffect = returnFiber.lastEffect = null;
+          returnFiber.effectTag |= Incomplete;
+        }
+      }
+
+      var siblingFiber = workInProgress.sibling;
+
+      if (siblingFiber !== null) {
+        // If there is more work to do in this returnFiber, do that next.
+        return siblingFiber;
+      } // Otherwise, return to the parent
+
+
+      workInProgress = returnFiber;
+    } while (workInProgress !== null); // We've reached the root.
+
+
+    if (workInProgressRootExitStatus === RootIncomplete) {
+      workInProgressRootExitStatus = RootCompleted;
+    }
+
+    return null;
+  }
+
+  function getRemainingExpirationTime(fiber) {
+    var updateExpirationTime = fiber.expirationTime;
+    var childExpirationTime = fiber.childExpirationTime;
+    return updateExpirationTime > childExpirationTime ? updateExpirationTime : childExpirationTime;
+  }
+
+  function resetChildExpirationTime(completedWork) {
+    if (renderExpirationTime$1 !== Never && completedWork.childExpirationTime === Never) {
+      // The children of this component are hidden. Don't bubble their
+      // expiration times.
+      return;
+    }
+
+    var newChildExpirationTime = NoWork; // Bubble up the earliest expiration time.
+
+    if ( (completedWork.mode & ProfileMode) !== NoMode) {
+      // In profiling mode, resetChildExpirationTime is also used to reset
+      // profiler durations.
+      var actualDuration = completedWork.actualDuration;
+      var treeBaseDuration = completedWork.selfBaseDuration; // When a fiber is cloned, its actualDuration is reset to 0. This value will
+      // only be updated if work is done on the fiber (i.e. it doesn't bailout).
+      // When work is done, it should bubble to the parent's actualDuration. If
+      // the fiber has not been cloned though, (meaning no work was done), then
+      // this value will reflect the amount of time spent working on a previous
+      // render. In that case it should not bubble. We determine whether it was
+      // cloned by comparing the child pointer.
+
+      var shouldBubbleActualDurations = completedWork.alternate === null || completedWork.child !== completedWork.alternate.child;
+      var child = completedWork.child;
+
+      while (child !== null) {
+        var childUpdateExpirationTime = child.expirationTime;
+        var childChildExpirationTime = child.childExpirationTime;
+
+        if (childUpdateExpirationTime > newChildExpirationTime) {
+          newChildExpirationTime = childUpdateExpirationTime;
+        }
+
+        if (childChildExpirationTime > newChildExpirationTime) {
+          newChildExpirationTime = childChildExpirationTime;
+        }
+
+        if (shouldBubbleActualDurations) {
+          actualDuration += child.actualDuration;
+        }
+
+        treeBaseDuration += child.treeBaseDuration;
+        child = child.sibling;
+      }
+
+      completedWork.actualDuration = actualDuration;
+      completedWork.treeBaseDuration = treeBaseDuration;
+    } else {
+      var _child = completedWork.child;
+
+      while (_child !== null) {
+        var _childUpdateExpirationTime = _child.expirationTime;
+        var _childChildExpirationTime = _child.childExpirationTime;
+
+        if (_childUpdateExpirationTime > newChildExpirationTime) {
+          newChildExpirationTime = _childUpdateExpirationTime;
+        }
+
+        if (_childChildExpirationTime > newChildExpirationTime) {
+          newChildExpirationTime = _childChildExpirationTime;
+        }
+
+        _child = _child.sibling;
+      }
+    }
+
+    completedWork.childExpirationTime = newChildExpirationTime;
+  }
+
+  function commitRoot(root) {
+    var renderPriorityLevel = getCurrentPriorityLevel();
+    runWithPriority$1(ImmediatePriority, commitRootImpl.bind(null, root, renderPriorityLevel));
+    return null;
+  }
+
+  function commitRootImpl(root, renderPriorityLevel) {
+    do {
+      // `flushPassiveEffects` will call `flushSyncUpdateQueue` at the end, which
+      // means `flushPassiveEffects` will sometimes result in additional
+      // passive effects. So we need to keep flushing in a loop until there are
+      // no more pending effects.
+      // TODO: Might be better if `flushPassiveEffects` did not automatically
+      // flush synchronous work at the end, to avoid factoring hazards like this.
+      flushPassiveEffects();
+    } while (rootWithPendingPassiveEffects !== null);
+
+    flushRenderPhaseStrictModeWarningsInDEV();
+
+    if (!((executionContext & (RenderContext | CommitContext)) === NoContext)) {
+      {
+        throw Error( "Should not already be working." );
+      }
+    }
+
+    var finishedWork = root.finishedWork;
+    var expirationTime = root.finishedExpirationTime;
+
+    if (finishedWork === null) {
+      return null;
+    }
+
+    root.finishedWork = null;
+    root.finishedExpirationTime = NoWork;
+
+    if (!(finishedWork !== root.current)) {
+      {
+        throw Error( "Cannot commit the same tree as before. This error is likely caused by a bug in React. Please file an issue." );
+      }
+    } // commitRoot never returns a continuation; it always finishes synchronously.
+    // So we can clear these now to allow a new callback to be scheduled.
+
+
+    root.callbackNode = null;
+    root.callbackExpirationTime = NoWork;
+    root.callbackPriority = NoPriority;
+    root.nextKnownPendingLevel = NoWork;
+    startCommitTimer(); // Update the first and last pending times on this root. The new first
+    // pending time is whatever is left on the root fiber.
+
+    var remainingExpirationTimeBeforeCommit = getRemainingExpirationTime(finishedWork);
+    markRootFinishedAtTime(root, expirationTime, remainingExpirationTimeBeforeCommit);
+
+    if (root === workInProgressRoot) {
+      // We can reset these now that they are finished.
+      workInProgressRoot = null;
+      workInProgress = null;
+      renderExpirationTime$1 = NoWork;
+    } // This indicates that the last root we worked on is not the same one that
+    // we're committing now. This most commonly happens when a suspended root
+    // times out.
+    // Get the list of effects.
+
+
+    var firstEffect;
+
+    if (finishedWork.effectTag > PerformedWork) {
+      // A fiber's effect list consists only of its children, not itself. So if
+      // the root has an effect, we need to add it to the end of the list. The
+      // resulting list is the set that would belong to the root's parent, if it
+      // had one; that is, all the effects in the tree including the root.
+      if (finishedWork.lastEffect !== null) {
+        finishedWork.lastEffect.nextEffect = finishedWork;
+        firstEffect = finishedWork.firstEffect;
+      } else {
+        firstEffect = finishedWork;
+      }
+    } else {
+      // There is no effect on the root.
+      firstEffect = finishedWork.firstEffect;
+    }
+
+    if (firstEffect !== null) {
+      var prevExecutionContext = executionContext;
+      executionContext |= CommitContext;
+      var prevInteractions = pushInteractions(root); // Reset this to null before calling lifecycles
+
+      ReactCurrentOwner$2.current = null; // The commit phase is broken into several sub-phases. We do a separate pass
+      // of the effect list for each phase: all mutation effects come before all
+      // layout effects, and so on.
+      // The first phase a "before mutation" phase. We use this phase to read the
+      // state of the host tree right before we mutate it. This is where
+      // getSnapshotBeforeUpdate is called.
+
+      startCommitSnapshotEffectsTimer();
+      prepareForCommit(root.containerInfo);
+      nextEffect = firstEffect;
+
+      do {
+        {
+          invokeGuardedCallback(null, commitBeforeMutationEffects, null);
+
+          if (hasCaughtError()) {
+            if (!(nextEffect !== null)) {
+              {
+                throw Error( "Should be working on an effect." );
+              }
+            }
+
+            var error = clearCaughtError();
+            captureCommitPhaseError(nextEffect, error);
+            nextEffect = nextEffect.nextEffect;
+          }
+        }
+      } while (nextEffect !== null);
+
+      stopCommitSnapshotEffectsTimer();
+
+      {
+        // Mark the current commit time to be shared by all Profilers in this
+        // batch. This enables them to be grouped later.
+        recordCommitTime();
+      } // The next phase is the mutation phase, where we mutate the host tree.
+
+
+      startCommitHostEffectsTimer();
+      nextEffect = firstEffect;
+
+      do {
+        {
+          invokeGuardedCallback(null, commitMutationEffects, null, root, renderPriorityLevel);
+
+          if (hasCaughtError()) {
+            if (!(nextEffect !== null)) {
+              {
+                throw Error( "Should be working on an effect." );
+              }
+            }
+
+            var _error = clearCaughtError();
+
+            captureCommitPhaseError(nextEffect, _error);
+            nextEffect = nextEffect.nextEffect;
+          }
+        }
+      } while (nextEffect !== null);
+
+      stopCommitHostEffectsTimer();
+      resetAfterCommit(root.containerInfo); // The work-in-progress tree is now the current tree. This must come after
+      // the mutation phase, so that the previous tree is still current during
+      // componentWillUnmount, but before the layout phase, so that the finished
+      // work is current during componentDidMount/Update.
+
+      root.current = finishedWork; // The next phase is the layout phase, where we call effects that read
+      // the host tree after it's been mutated. The idiomatic use case for this is
+      // layout, but class component lifecycles also fire here for legacy reasons.
+
+      startCommitLifeCyclesTimer();
+      nextEffect = firstEffect;
+
+      do {
+        {
+          invokeGuardedCallback(null, commitLayoutEffects, null, root, expirationTime);
+
+          if (hasCaughtError()) {
+            if (!(nextEffect !== null)) {
+              {
+                throw Error( "Should be working on an effect." );
+              }
+            }
+
+            var _error2 = clearCaughtError();
+
+            captureCommitPhaseError(nextEffect, _error2);
+            nextEffect = nextEffect.nextEffect;
+          }
+        }
+      } while (nextEffect !== null);
+
+      stopCommitLifeCyclesTimer();
+      nextEffect = null; // Tell Scheduler to yield at the end of the frame, so the browser has an
+      // opportunity to paint.
+
+      requestPaint();
+
+      {
+        popInteractions(prevInteractions);
+      }
+
+      executionContext = prevExecutionContext;
+    } else {
+      // No effects.
+      root.current = finishedWork; // Measure these anyway so the flamegraph explicitly shows that there were
+      // no effects.
+      // TODO: Maybe there's a better way to report this.
+
+      startCommitSnapshotEffectsTimer();
+      stopCommitSnapshotEffectsTimer();
+
+      {
+        recordCommitTime();
+      }
+
+      startCommitHostEffectsTimer();
+      stopCommitHostEffectsTimer();
+      startCommitLifeCyclesTimer();
+      stopCommitLifeCyclesTimer();
+    }
+
+    stopCommitTimer();
+    var rootDidHavePassiveEffects = rootDoesHavePassiveEffects;
+
+    if (rootDoesHavePassiveEffects) {
+      // This commit has passive effects. Stash a reference to them. But don't
+      // schedule a callback until after flushing layout work.
+      rootDoesHavePassiveEffects = false;
+      rootWithPendingPassiveEffects = root;
+      pendingPassiveEffectsExpirationTime = expirationTime;
+      pendingPassiveEffectsRenderPriority = renderPriorityLevel;
+    } else {
+      // We are done with the effect chain at this point so let's clear the
+      // nextEffect pointers to assist with GC. If we have passive effects, we'll
+      // clear this in flushPassiveEffects.
+      nextEffect = firstEffect;
+
+      while (nextEffect !== null) {
+        var nextNextEffect = nextEffect.nextEffect;
+        nextEffect.nextEffect = null;
+        nextEffect = nextNextEffect;
+      }
+    } // Check if there's remaining work on this root
+
+
+    var remainingExpirationTime = root.firstPendingTime;
+
+    if (remainingExpirationTime !== NoWork) {
+      {
+        if (spawnedWorkDuringRender !== null) {
+          var expirationTimes = spawnedWorkDuringRender;
+          spawnedWorkDuringRender = null;
+
+          for (var i = 0; i < expirationTimes.length; i++) {
+            scheduleInteractions(root, expirationTimes[i], root.memoizedInteractions);
+          }
+        }
+
+        schedulePendingInteractions(root, remainingExpirationTime);
+      }
+    } else {
+      // If there's no remaining work, we can clear the set of already failed
+      // error boundaries.
+      legacyErrorBoundariesThatAlreadyFailed = null;
+    }
+
+    {
+      if (!rootDidHavePassiveEffects) {
+        // If there are no passive effects, then we can complete the pending interactions.
+        // Otherwise, we'll wait until after the passive effects are flushed.
+        // Wait to do this until after remaining work has been scheduled,
+        // so that we don't prematurely signal complete for interactions when there's e.g. hidden work.
+        finishPendingInteractions(root, expirationTime);
+      }
+    }
+
+    if (remainingExpirationTime === Sync) {
+      // Count the number of times the root synchronously re-renders without
+      // finishing. If there are too many, it indicates an infinite update loop.
+      if (root === rootWithNestedUpdates) {
+        nestedUpdateCount++;
+      } else {
+        nestedUpdateCount = 0;
+        rootWithNestedUpdates = root;
+      }
+    } else {
+      nestedUpdateCount = 0;
+    }
+
+    onCommitRoot(finishedWork.stateNode, expirationTime); // Always call this before exiting `commitRoot`, to ensure that any
+    // additional work on this root is scheduled.
+
+    ensureRootIsScheduled(root);
+
+    if (hasUncaughtError) {
+      hasUncaughtError = false;
+      var _error3 = firstUncaughtError;
+      firstUncaughtError = null;
+      throw _error3;
+    }
+
+    if ((executionContext & LegacyUnbatchedContext) !== NoContext) {
+      // This is a legacy edge case. We just committed the initial mount of
+      // a ReactDOM.render-ed root inside of batchedUpdates. The commit fired
+      // synchronously, but layout updates should be deferred until the end
+      // of the batch.
+      return null;
+    } // If layout work was scheduled, flush it now.
+
+
+    flushSyncCallbackQueue();
+    return null;
+  }
+
+  function commitBeforeMutationEffects() {
+    while (nextEffect !== null) {
+      var effectTag = nextEffect.effectTag;
+
+      if ((effectTag & Snapshot) !== NoEffect) {
+        setCurrentFiber(nextEffect);
+        recordEffect();
+        var current = nextEffect.alternate;
+        commitBeforeMutationLifeCycles(current, nextEffect);
+        resetCurrentFiber();
+      }
+
+      if ((effectTag & Passive) !== NoEffect) {
+        // If there are passive effects, schedule a callback to flush at
+        // the earliest opportunity.
+        if (!rootDoesHavePassiveEffects) {
+          rootDoesHavePassiveEffects = true;
+          scheduleCallback(NormalPriority, function () {
+            flushPassiveEffects();
+            return null;
+          });
+        }
+      }
+
+      nextEffect = nextEffect.nextEffect;
+    }
+  }
+
+  function commitMutationEffects(root, renderPriorityLevel) {
+    // TODO: Should probably move the bulk of this function to commitWork.
+    while (nextEffect !== null) {
+      setCurrentFiber(nextEffect);
+      var effectTag = nextEffect.effectTag;
+
+      if (effectTag & ContentReset) {
+        commitResetTextContent(nextEffect);
+      }
+
+      if (effectTag & Ref) {
+        var current = nextEffect.alternate;
+
+        if (current !== null) {
+          commitDetachRef(current);
+        }
+      } // The following switch statement is only concerned about placement,
+      // updates, and deletions. To avoid needing to add a case for every possible
+      // bitmap value, we remove the secondary effects from the effect tag and
+      // switch on that value.
+
+
+      var primaryEffectTag = effectTag & (Placement | Update | Deletion | Hydrating);
+
+      switch (primaryEffectTag) {
+        case Placement:
+          {
+            commitPlacement(nextEffect); // Clear the "placement" from effect tag so that we know that this is
+            // inserted, before any life-cycles like componentDidMount gets called.
+            // TODO: findDOMNode doesn't rely on this any more but isMounted does
+            // and isMounted is deprecated anyway so we should be able to kill this.
+
+            nextEffect.effectTag &= ~Placement;
+            break;
+          }
+
+        case PlacementAndUpdate:
+          {
+            // Placement
+            commitPlacement(nextEffect); // Clear the "placement" from effect tag so that we know that this is
+            // inserted, before any life-cycles like componentDidMount gets called.
+
+            nextEffect.effectTag &= ~Placement; // Update
+
+            var _current = nextEffect.alternate;
+            commitWork(_current, nextEffect);
+            break;
+          }
+
+        case Hydrating:
+          {
+            nextEffect.effectTag &= ~Hydrating;
+            break;
+          }
+
+        case HydratingAndUpdate:
+          {
+            nextEffect.effectTag &= ~Hydrating; // Update
+
+            var _current2 = nextEffect.alternate;
+            commitWork(_current2, nextEffect);
+            break;
+          }
+
+        case Update:
+          {
+            var _current3 = nextEffect.alternate;
+            commitWork(_current3, nextEffect);
+            break;
+          }
+
+        case Deletion:
+          {
+            commitDeletion(root, nextEffect, renderPriorityLevel);
+            break;
+          }
+      } // TODO: Only record a mutation effect if primaryEffectTag is non-zero.
+
+
+      recordEffect();
+      resetCurrentFiber();
+      nextEffect = nextEffect.nextEffect;
+    }
+  }
+
+  function commitLayoutEffects(root, committedExpirationTime) {
+    // TODO: Should probably move the bulk of this function to commitWork.
+    while (nextEffect !== null) {
+      setCurrentFiber(nextEffect);
+      var effectTag = nextEffect.effectTag;
+
+      if (effectTag & (Update | Callback)) {
+        recordEffect();
+        var current = nextEffect.alternate;
+        commitLifeCycles(root, current, nextEffect);
+      }
+
+      if (effectTag & Ref) {
+        recordEffect();
+        commitAttachRef(nextEffect);
+      }
+
+      resetCurrentFiber();
+      nextEffect = nextEffect.nextEffect;
+    }
+  }
+
+  function flushPassiveEffects() {
+    if (pendingPassiveEffectsRenderPriority !== NoPriority) {
+      var priorityLevel = pendingPassiveEffectsRenderPriority > NormalPriority ? NormalPriority : pendingPassiveEffectsRenderPriority;
+      pendingPassiveEffectsRenderPriority = NoPriority;
+      return runWithPriority$1(priorityLevel, flushPassiveEffectsImpl);
+    }
+  }
+
+  function flushPassiveEffectsImpl() {
+    if (rootWithPendingPassiveEffects === null) {
+      return false;
+    }
+
+    var root = rootWithPendingPassiveEffects;
+    var expirationTime = pendingPassiveEffectsExpirationTime;
+    rootWithPendingPassiveEffects = null;
+    pendingPassiveEffectsExpirationTime = NoWork;
+
+    if (!((executionContext & (RenderContext | CommitContext)) === NoContext)) {
+      {
+        throw Error( "Cannot flush passive effects while already rendering." );
+      }
+    }
+
+    var prevExecutionContext = executionContext;
+    executionContext |= CommitContext;
+    var prevInteractions = pushInteractions(root);
+
+    {
+      // Note: This currently assumes there are no passive effects on the root fiber
+      // because the root is not part of its own effect list.
+      // This could change in the future.
+      var _effect2 = root.current.firstEffect;
+
+      while (_effect2 !== null) {
+        {
+          setCurrentFiber(_effect2);
+          invokeGuardedCallback(null, commitPassiveHookEffects, null, _effect2);
+
+          if (hasCaughtError()) {
+            if (!(_effect2 !== null)) {
+              {
+                throw Error( "Should be working on an effect." );
+              }
+            }
+
+            var _error5 = clearCaughtError();
+
+            captureCommitPhaseError(_effect2, _error5);
+          }
+
+          resetCurrentFiber();
+        }
+
+        var nextNextEffect = _effect2.nextEffect; // Remove nextEffect pointer to assist GC
+
+        _effect2.nextEffect = null;
+        _effect2 = nextNextEffect;
+      }
+    }
+
+    {
+      popInteractions(prevInteractions);
+      finishPendingInteractions(root, expirationTime);
+    }
+
+    executionContext = prevExecutionContext;
+    flushSyncCallbackQueue(); // If additional passive effects were scheduled, increment a counter. If this
+    // exceeds the limit, we'll fire a warning.
+
+    nestedPassiveUpdateCount = rootWithPendingPassiveEffects === null ? 0 : nestedPassiveUpdateCount + 1;
+    return true;
+  }
+
+  function isAlreadyFailedLegacyErrorBoundary(instance) {
+    return legacyErrorBoundariesThatAlreadyFailed !== null && legacyErrorBoundariesThatAlreadyFailed.has(instance);
+  }
+  function markLegacyErrorBoundaryAsFailed(instance) {
+    if (legacyErrorBoundariesThatAlreadyFailed === null) {
+      legacyErrorBoundariesThatAlreadyFailed = new Set([instance]);
+    } else {
+      legacyErrorBoundariesThatAlreadyFailed.add(instance);
+    }
+  }
+
+  function prepareToThrowUncaughtError(error) {
+    if (!hasUncaughtError) {
+      hasUncaughtError = true;
+      firstUncaughtError = error;
+    }
+  }
+
+  var onUncaughtError = prepareToThrowUncaughtError;
+
+  function captureCommitPhaseErrorOnRoot(rootFiber, sourceFiber, error) {
+    var errorInfo = createCapturedValue(error, sourceFiber);
+    var update = createRootErrorUpdate(rootFiber, errorInfo, Sync);
+    enqueueUpdate(rootFiber, update);
+    var root = markUpdateTimeFromFiberToRoot(rootFiber, Sync);
+
+    if (root !== null) {
+      ensureRootIsScheduled(root);
+      schedulePendingInteractions(root, Sync);
+    }
+  }
+
+  function captureCommitPhaseError(sourceFiber, error) {
+    if (sourceFiber.tag === HostRoot) {
+      // Error was thrown at the root. There is no parent, so the root
+      // itself should capture it.
+      captureCommitPhaseErrorOnRoot(sourceFiber, sourceFiber, error);
+      return;
+    }
+
+    var fiber = sourceFiber.return;
+
+    while (fiber !== null) {
+      if (fiber.tag === HostRoot) {
+        captureCommitPhaseErrorOnRoot(fiber, sourceFiber, error);
+        return;
+      } else if (fiber.tag === ClassComponent) {
+        var ctor = fiber.type;
+        var instance = fiber.stateNode;
+
+        if (typeof ctor.getDerivedStateFromError === 'function' || typeof instance.componentDidCatch === 'function' && !isAlreadyFailedLegacyErrorBoundary(instance)) {
+          var errorInfo = createCapturedValue(error, sourceFiber);
+          var update = createClassErrorUpdate(fiber, errorInfo, // TODO: This is always sync
+          Sync);
+          enqueueUpdate(fiber, update);
+          var root = markUpdateTimeFromFiberToRoot(fiber, Sync);
+
+          if (root !== null) {
+            ensureRootIsScheduled(root);
+            schedulePendingInteractions(root, Sync);
+          }
+
+          return;
+        }
+      }
+
+      fiber = fiber.return;
+    }
+  }
+  function pingSuspendedRoot(root, thenable, suspendedTime) {
+    var pingCache = root.pingCache;
+
+    if (pingCache !== null) {
+      // The thenable resolved, so we no longer need to memoize, because it will
+      // never be thrown again.
+      pingCache.delete(thenable);
+    }
+
+    if (workInProgressRoot === root && renderExpirationTime$1 === suspendedTime) {
+      // Received a ping at the same priority level at which we're currently
+      // rendering. We might want to restart this render. This should mirror
+      // the logic of whether or not a root suspends once it completes.
+      // TODO: If we're rendering sync either due to Sync, Batched or expired,
+      // we should probably never restart.
+      // If we're suspended with delay, we'll always suspend so we can always
+      // restart. If we're suspended without any updates, it might be a retry.
+      // If it's early in the retry we can restart. We can't know for sure
+      // whether we'll eventually process an update during this render pass,
+      // but it's somewhat unlikely that we get to a ping before that, since
+      // getting to the root most update is usually very fast.
+      if (workInProgressRootExitStatus === RootSuspendedWithDelay || workInProgressRootExitStatus === RootSuspended && workInProgressRootLatestProcessedExpirationTime === Sync && now() - globalMostRecentFallbackTime < FALLBACK_THROTTLE_MS) {
+        // Restart from the root. Don't need to schedule a ping because
+        // we're already working on this tree.
+        prepareFreshStack(root, renderExpirationTime$1);
+      } else {
+        // Even though we can't restart right now, we might get an
+        // opportunity later. So we mark this render as having a ping.
+        workInProgressRootHasPendingPing = true;
+      }
+
+      return;
+    }
+
+    if (!isRootSuspendedAtTime(root, suspendedTime)) {
+      // The root is no longer suspended at this time.
+      return;
+    }
+
+    var lastPingedTime = root.lastPingedTime;
+
+    if (lastPingedTime !== NoWork && lastPingedTime < suspendedTime) {
+      // There's already a lower priority ping scheduled.
+      return;
+    } // Mark the time at which this ping was scheduled.
+
+
+    root.lastPingedTime = suspendedTime;
+
+    ensureRootIsScheduled(root);
+    schedulePendingInteractions(root, suspendedTime);
+  }
+
+  function retryTimedOutBoundary(boundaryFiber, retryTime) {
+    // The boundary fiber (a Suspense component or SuspenseList component)
+    // previously was rendered in its fallback state. One of the promises that
+    // suspended it has resolved, which means at least part of the tree was
+    // likely unblocked. Try rendering again, at a new expiration time.
+    if (retryTime === NoWork) {
+      var suspenseConfig = null; // Retries don't carry over the already committed update.
+
+      var currentTime = requestCurrentTimeForUpdate();
+      retryTime = computeExpirationForFiber(currentTime, boundaryFiber, suspenseConfig);
+    } // TODO: Special case idle priority?
+
+
+    var root = markUpdateTimeFromFiberToRoot(boundaryFiber, retryTime);
+
+    if (root !== null) {
+      ensureRootIsScheduled(root);
+      schedulePendingInteractions(root, retryTime);
+    }
+  }
+  function resolveRetryThenable(boundaryFiber, thenable) {
+    var retryTime = NoWork; // Default
+
+    var retryCache;
+
+    {
+      retryCache = boundaryFiber.stateNode;
+    }
+
+    if (retryCache !== null) {
+      // The thenable resolved, so we no longer need to memoize, because it will
+      // never be thrown again.
+      retryCache.delete(thenable);
+    }
+
+    retryTimedOutBoundary(boundaryFiber, retryTime);
+  } // Computes the next Just Noticeable Difference (JND) boundary.
+  // The theory is that a person can't tell the difference between small differences in time.
+  // Therefore, if we wait a bit longer than necessary that won't translate to a noticeable
+  // difference in the experience. However, waiting for longer might mean that we can avoid
+  // showing an intermediate loading state. The longer we have already waited, the harder it
+  // is to tell small differences in time. Therefore, the longer we've already waited,
+  // the longer we can wait additionally. At some point we have to give up though.
+  // We pick a train model where the next boundary commits at a consistent schedule.
+  // These particular numbers are vague estimates. We expect to adjust them based on research.
+
+  function jnd(timeElapsed) {
+    return timeElapsed < 120 ? 120 : timeElapsed < 480 ? 480 : timeElapsed < 1080 ? 1080 : timeElapsed < 1920 ? 1920 : timeElapsed < 3000 ? 3000 : timeElapsed < 4320 ? 4320 : ceil(timeElapsed / 1960) * 1960;
+  }
+
+  function computeMsUntilSuspenseLoadingDelay(mostRecentEventTime, committedExpirationTime, suspenseConfig) {
+    var busyMinDurationMs = suspenseConfig.busyMinDurationMs | 0;
+
+    if (busyMinDurationMs <= 0) {
+      return 0;
+    }
+
+    var busyDelayMs = suspenseConfig.busyDelayMs | 0; // Compute the time until this render pass would expire.
+
+    var currentTimeMs = now();
+    var eventTimeMs = inferTimeFromExpirationTimeWithSuspenseConfig(mostRecentEventTime, suspenseConfig);
+    var timeElapsed = currentTimeMs - eventTimeMs;
+
+    if (timeElapsed <= busyDelayMs) {
+      // If we haven't yet waited longer than the initial delay, we don't
+      // have to wait any additional time.
+      return 0;
+    }
+
+    var msUntilTimeout = busyDelayMs + busyMinDurationMs - timeElapsed; // This is the value that is passed to `setTimeout`.
+
+    return msUntilTimeout;
+  }
+
+  function checkForNestedUpdates() {
+    if (nestedUpdateCount > NESTED_UPDATE_LIMIT) {
+      nestedUpdateCount = 0;
+      rootWithNestedUpdates = null;
+
+      {
+        {
+          throw Error( "Maximum update depth exceeded. This can happen when a component repeatedly calls setState inside componentWillUpdate or componentDidUpdate. React limits the number of nested updates to prevent infinite loops." );
+        }
+      }
+    }
+
+    {
+      if (nestedPassiveUpdateCount > NESTED_PASSIVE_UPDATE_LIMIT) {
+        nestedPassiveUpdateCount = 0;
+
+        error('Maximum update depth exceeded. This can happen when a component ' + "calls setState inside useEffect, but useEffect either doesn't " + 'have a dependency array, or one of the dependencies changes on ' + 'every render.');
+      }
+    }
+  }
+
+  function flushRenderPhaseStrictModeWarningsInDEV() {
+    {
+      ReactStrictModeWarnings.flushLegacyContextWarning();
+
+      {
+        ReactStrictModeWarnings.flushPendingUnsafeLifecycleWarnings();
+      }
+    }
+  }
+
+  function stopFinishedWorkLoopTimer() {
+    var didCompleteRoot = true;
+    stopWorkLoopTimer(interruptedBy, didCompleteRoot);
+    interruptedBy = null;
+  }
+
+  function stopInterruptedWorkLoopTimer() {
+    // TODO: Track which fiber caused the interruption.
+    var didCompleteRoot = false;
+    stopWorkLoopTimer(interruptedBy, didCompleteRoot);
+    interruptedBy = null;
+  }
+
+  function checkForInterruption(fiberThatReceivedUpdate, updateExpirationTime) {
+    if ( workInProgressRoot !== null && updateExpirationTime > renderExpirationTime$1) {
+      interruptedBy = fiberThatReceivedUpdate;
+    }
+  }
+
+  var didWarnStateUpdateForUnmountedComponent = null;
+
+  function warnAboutUpdateOnUnmountedFiberInDEV(fiber) {
+    {
+      var tag = fiber.tag;
+
+      if (tag !== HostRoot && tag !== ClassComponent && tag !== FunctionComponent && tag !== ForwardRef && tag !== MemoComponent && tag !== SimpleMemoComponent && tag !== Block) {
+        // Only warn for user-defined components, not internal ones like Suspense.
+        return;
+      }
+      // the problematic code almost always lies inside that component.
+
+
+      var componentName = getComponentName(fiber.type) || 'ReactComponent';
+
+      if (didWarnStateUpdateForUnmountedComponent !== null) {
+        if (didWarnStateUpdateForUnmountedComponent.has(componentName)) {
+          return;
+        }
+
+        didWarnStateUpdateForUnmountedComponent.add(componentName);
+      } else {
+        didWarnStateUpdateForUnmountedComponent = new Set([componentName]);
+      }
+
+      error("Can't perform a React state update on an unmounted component. This " + 'is a no-op, but it indicates a memory leak in your application. To ' + 'fix, cancel all subscriptions and asynchronous tasks in %s.%s', tag === ClassComponent ? 'the componentWillUnmount method' : 'a useEffect cleanup function', getStackByFiberInDevAndProd(fiber));
+    }
+  }
+
+  var beginWork$1;
+
+  {
+    var dummyFiber = null;
+
+    beginWork$1 = function (current, unitOfWork, expirationTime) {
+      // If a component throws an error, we replay it again in a synchronously
+      // dispatched event, so that the debugger will treat it as an uncaught
+      // error See ReactErrorUtils for more information.
+      // Before entering the begin phase, copy the work-in-progress onto a dummy
+      // fiber. If beginWork throws, we'll use this to reset the state.
+      var originalWorkInProgressCopy = assignFiberPropertiesInDEV(dummyFiber, unitOfWork);
+
+      try {
+        return beginWork(current, unitOfWork, expirationTime);
+      } catch (originalError) {
+        if (originalError !== null && typeof originalError === 'object' && typeof originalError.then === 'function') {
+          // Don't replay promises. Treat everything else like an error.
+          throw originalError;
+        } // Keep this code in sync with handleError; any changes here must have
+        // corresponding changes there.
+
+
+        resetContextDependencies();
+        resetHooksAfterThrow(); // Don't reset current debug fiber, since we're about to work on the
+        // same fiber again.
+        // Unwind the failed stack frame
+
+        unwindInterruptedWork(unitOfWork); // Restore the original properties of the fiber.
+
+        assignFiberPropertiesInDEV(unitOfWork, originalWorkInProgressCopy);
+
+        if ( unitOfWork.mode & ProfileMode) {
+          // Reset the profiler timer.
+          startProfilerTimer(unitOfWork);
+        } // Run beginWork again.
+
+
+        invokeGuardedCallback(null, beginWork, null, current, unitOfWork, expirationTime);
+
+        if (hasCaughtError()) {
+          var replayError = clearCaughtError(); // `invokeGuardedCallback` sometimes sets an expando `_suppressLogging`.
+          // Rethrow this error instead of the original one.
+
+          throw replayError;
+        } else {
+          // This branch is reachable if the render phase is impure.
+          throw originalError;
+        }
+      }
+    };
+  }
+
+  var didWarnAboutUpdateInRender = false;
+  var didWarnAboutUpdateInRenderForAnotherComponent;
+
+  {
+    didWarnAboutUpdateInRenderForAnotherComponent = new Set();
+  }
+
+  function warnAboutRenderPhaseUpdatesInDEV(fiber) {
+    {
+      if (isRendering && (executionContext & RenderContext) !== NoContext) {
+        switch (fiber.tag) {
+          case FunctionComponent:
+          case ForwardRef:
+          case SimpleMemoComponent:
+            {
+              var renderingComponentName = workInProgress && getComponentName(workInProgress.type) || 'Unknown'; // Dedupe by the rendering component because it's the one that needs to be fixed.
+
+              var dedupeKey = renderingComponentName;
+
+              if (!didWarnAboutUpdateInRenderForAnotherComponent.has(dedupeKey)) {
+                didWarnAboutUpdateInRenderForAnotherComponent.add(dedupeKey);
+                var setStateComponentName = getComponentName(fiber.type) || 'Unknown';
+
+                error('Cannot update a component (`%s`) while rendering a ' + 'different component (`%s`). To locate the bad setState() call inside `%s`, ' + 'follow the stack trace as described in https://fb.me/setstate-in-render', setStateComponentName, renderingComponentName, renderingComponentName);
+              }
+
+              break;
+            }
+
+          case ClassComponent:
+            {
+              if (!didWarnAboutUpdateInRender) {
+                error('Cannot update during an existing state transition (such as ' + 'within `render`). Render methods should be a pure ' + 'function of props and state.');
+
+                didWarnAboutUpdateInRender = true;
+              }
+
+              break;
+            }
+        }
+      }
+    }
+  } // a 'shared' variable that changes when act() opens/closes in tests.
+
+
+  var IsThisRendererActing = {
+    current: false
+  };
+  function warnIfNotScopedWithMatchingAct(fiber) {
+    {
+      if ( IsSomeRendererActing.current === true && IsThisRendererActing.current !== true) {
+        error("It looks like you're using the wrong act() around your test interactions.\n" + 'Be sure to use the matching version of act() corresponding to your renderer:\n\n' + '// for react-dom:\n' + "import {act} from 'react-dom/test-utils';\n" + '// ...\n' + 'act(() => ...);\n\n' + '// for react-test-renderer:\n' + "import TestRenderer from 'react-test-renderer';\n" + 'const {act} = TestRenderer;\n' + '// ...\n' + 'act(() => ...);' + '%s', getStackByFiberInDevAndProd(fiber));
+      }
+    }
+  }
+  function warnIfNotCurrentlyActingEffectsInDEV(fiber) {
+    {
+      if ( (fiber.mode & StrictMode) !== NoMode && IsSomeRendererActing.current === false && IsThisRendererActing.current === false) {
+        error('An update to %s ran an effect, but was not wrapped in act(...).\n\n' + 'When testing, code that causes React state updates should be ' + 'wrapped into act(...):\n\n' + 'act(() => {\n' + '  /* fire events that update state */\n' + '});\n' + '/* assert on the output */\n\n' + "This ensures that you're testing the behavior the user would see " + 'in the browser.' + ' Learn more at https://fb.me/react-wrap-tests-with-act' + '%s', getComponentName(fiber.type), getStackByFiberInDevAndProd(fiber));
+      }
+    }
+  }
+
+  function warnIfNotCurrentlyActingUpdatesInDEV(fiber) {
+    {
+      if ( executionContext === NoContext && IsSomeRendererActing.current === false && IsThisRendererActing.current === false) {
+        error('An update to %s inside a test was not wrapped in act(...).\n\n' + 'When testing, code that causes React state updates should be ' + 'wrapped into act(...):\n\n' + 'act(() => {\n' + '  /* fire events that update state */\n' + '});\n' + '/* assert on the output */\n\n' + "This ensures that you're testing the behavior the user would see " + 'in the browser.' + ' Learn more at https://fb.me/react-wrap-tests-with-act' + '%s', getComponentName(fiber.type), getStackByFiberInDevAndProd(fiber));
+      }
+    }
+  }
+
+  var warnIfNotCurrentlyActingUpdatesInDev = warnIfNotCurrentlyActingUpdatesInDEV; // In tests, we want to enforce a mocked scheduler.
+
+  var didWarnAboutUnmockedScheduler = false; // TODO Before we release concurrent mode, revisit this and decide whether a mocked
+  // scheduler is the actual recommendation. The alternative could be a testing build,
+  // a new lib, or whatever; we dunno just yet. This message is for early adopters
+  // to get their tests right.
+
+  function warnIfUnmockedScheduler(fiber) {
+    {
+      if (didWarnAboutUnmockedScheduler === false && unstable_flushAllWithoutAsserting === undefined) {
+        if (fiber.mode & BlockingMode || fiber.mode & ConcurrentMode) {
+          didWarnAboutUnmockedScheduler = true;
+
+          error('In Concurrent or Sync modes, the "scheduler" module needs to be mocked ' + 'to guarantee consistent behaviour across tests and browsers. ' + 'For example, with jest: \n' + "jest.mock('scheduler', () => require('scheduler/unstable_mock'));\n\n" + 'For more info, visit https://fb.me/react-mock-scheduler');
+        }
+      }
+    }
+  }
+
+  function computeThreadID(root, expirationTime) {
+    // Interaction threads are unique per root and expiration time.
+    return expirationTime * 1000 + root.interactionThreadID;
+  }
+
+  function markSpawnedWork(expirationTime) {
+
+    if (spawnedWorkDuringRender === null) {
+      spawnedWorkDuringRender = [expirationTime];
+    } else {
+      spawnedWorkDuringRender.push(expirationTime);
+    }
+  }
+
+  function scheduleInteractions(root, expirationTime, interactions) {
+
+    if (interactions.size > 0) {
+      var pendingInteractionMap = root.pendingInteractionMap;
+      var pendingInteractions = pendingInteractionMap.get(expirationTime);
+
+      if (pendingInteractions != null) {
+        interactions.forEach(function (interaction) {
+          if (!pendingInteractions.has(interaction)) {
+            // Update the pending async work count for previously unscheduled interaction.
+            interaction.__count++;
+          }
+
+          pendingInteractions.add(interaction);
+        });
+      } else {
+        pendingInteractionMap.set(expirationTime, new Set(interactions)); // Update the pending async work count for the current interactions.
+
+        interactions.forEach(function (interaction) {
+          interaction.__count++;
+        });
+      }
+
+      var subscriber = __subscriberRef.current;
+
+      if (subscriber !== null) {
+        var threadID = computeThreadID(root, expirationTime);
+        subscriber.onWorkScheduled(interactions, threadID);
+      }
+    }
+  }
+
+  function schedulePendingInteractions(root, expirationTime) {
+
+    scheduleInteractions(root, expirationTime, __interactionsRef.current);
+  }
+
+  function startWorkOnPendingInteractions(root, expirationTime) {
+    // we can accurately attribute time spent working on it, And so that cascading
+    // work triggered during the render phase will be associated with it.
+
+
+    var interactions = new Set();
+    root.pendingInteractionMap.forEach(function (scheduledInteractions, scheduledExpirationTime) {
+      if (scheduledExpirationTime >= expirationTime) {
+        scheduledInteractions.forEach(function (interaction) {
+          return interactions.add(interaction);
+        });
+      }
+    }); // Store the current set of interactions on the FiberRoot for a few reasons:
+    // We can re-use it in hot functions like performConcurrentWorkOnRoot()
+    // without having to recalculate it. We will also use it in commitWork() to
+    // pass to any Profiler onRender() hooks. This also provides DevTools with a
+    // way to access it when the onCommitRoot() hook is called.
+
+    root.memoizedInteractions = interactions;
+
+    if (interactions.size > 0) {
+      var subscriber = __subscriberRef.current;
+
+      if (subscriber !== null) {
+        var threadID = computeThreadID(root, expirationTime);
+
+        try {
+          subscriber.onWorkStarted(interactions, threadID);
+        } catch (error) {
+          // If the subscriber throws, rethrow it in a separate task
+          scheduleCallback(ImmediatePriority, function () {
+            throw error;
+          });
+        }
+      }
+    }
+  }
+
+  function finishPendingInteractions(root, committedExpirationTime) {
+
+    var earliestRemainingTimeAfterCommit = root.firstPendingTime;
+    var subscriber;
+
+    try {
+      subscriber = __subscriberRef.current;
+
+      if (subscriber !== null && root.memoizedInteractions.size > 0) {
+        var threadID = computeThreadID(root, committedExpirationTime);
+        subscriber.onWorkStopped(root.memoizedInteractions, threadID);
+      }
+    } catch (error) {
+      // If the subscriber throws, rethrow it in a separate task
+      scheduleCallback(ImmediatePriority, function () {
+        throw error;
+      });
+    } finally {
+      // Clear completed interactions from the pending Map.
+      // Unless the render was suspended or cascading work was scheduled,
+      // In which case– leave pending interactions until the subsequent render.
+      var pendingInteractionMap = root.pendingInteractionMap;
+      pendingInteractionMap.forEach(function (scheduledInteractions, scheduledExpirationTime) {
+        // Only decrement the pending interaction count if we're done.
+        // If there's still work at the current priority,
+        // That indicates that we are waiting for suspense data.
+        if (scheduledExpirationTime > earliestRemainingTimeAfterCommit) {
+          pendingInteractionMap.delete(scheduledExpirationTime);
+          scheduledInteractions.forEach(function (interaction) {
+            interaction.__count--;
+
+            if (subscriber !== null && interaction.__count === 0) {
+              try {
+                subscriber.onInteractionScheduledWorkCompleted(interaction);
+              } catch (error) {
+                // If the subscriber throws, rethrow it in a separate task
+                scheduleCallback(ImmediatePriority, function () {
+                  throw error;
+                });
+              }
+            }
+          });
+        }
+      });
+    }
+  }
+
+  var onScheduleFiberRoot = null;
+  var onCommitFiberRoot = null;
+  var onCommitFiberUnmount = null;
+  var hasLoggedError = false;
+  var isDevToolsPresent = typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ !== 'undefined';
+  function injectInternals(internals) {
+    if (typeof __REACT_DEVTOOLS_GLOBAL_HOOK__ === 'undefined') {
+      // No DevTools
+      return false;
+    }
+
+    var hook = __REACT_DEVTOOLS_GLOBAL_HOOK__;
+
+    if (hook.isDisabled) {
+      // This isn't a real property on the hook, but it can be set to opt out
+      // of DevTools integration and associated warnings and logs.
+      // https://github.com/facebook/react/issues/3877
+      return true;
+    }
+
+    if (!hook.supportsFiber) {
+      {
+        error('The installed version of React DevTools is too old and will not work ' + 'with the current version of React. Please update React DevTools. ' + 'https://fb.me/react-devtools');
+      } // DevTools exists, even though it doesn't support Fiber.
+
+
+      return true;
+    }
+
+    try {
+      var rendererID = hook.inject(internals); // We have successfully injected, so now it is safe to set up hooks.
+
+      if (true) {
+        // Only used by Fast Refresh
+        if (typeof hook.onScheduleFiberRoot === 'function') {
+          onScheduleFiberRoot = function (root, children) {
+            try {
+              hook.onScheduleFiberRoot(rendererID, root, children);
+            } catch (err) {
+              if (true && !hasLoggedError) {
+                hasLoggedError = true;
+
+                error('React instrumentation encountered an error: %s', err);
+              }
+            }
+          };
+        }
+      }
+
+      onCommitFiberRoot = function (root, expirationTime) {
+        try {
+          var didError = (root.current.effectTag & DidCapture) === DidCapture;
+
+          if (enableProfilerTimer) {
+            var currentTime = getCurrentTime();
+            var priorityLevel = inferPriorityFromExpirationTime(currentTime, expirationTime);
+            hook.onCommitFiberRoot(rendererID, root, priorityLevel, didError);
+          } else {
+            hook.onCommitFiberRoot(rendererID, root, undefined, didError);
+          }
+        } catch (err) {
+          if (true) {
+            if (!hasLoggedError) {
+              hasLoggedError = true;
+
+              error('React instrumentation encountered an error: %s', err);
+            }
+          }
+        }
+      };
+
+      onCommitFiberUnmount = function (fiber) {
+        try {
+          hook.onCommitFiberUnmount(rendererID, fiber);
+        } catch (err) {
+          if (true) {
+            if (!hasLoggedError) {
+              hasLoggedError = true;
+
+              error('React instrumentation encountered an error: %s', err);
+            }
+          }
+        }
+      };
+    } catch (err) {
+      // Catch all errors because it is unsafe to throw during initialization.
+      {
+        error('React instrumentation encountered an error: %s.', err);
+      }
+    } // DevTools exists
+
+
+    return true;
+  }
+  function onScheduleRoot(root, children) {
+    if (typeof onScheduleFiberRoot === 'function') {
+      onScheduleFiberRoot(root, children);
+    }
+  }
+  function onCommitRoot(root, expirationTime) {
+    if (typeof onCommitFiberRoot === 'function') {
+      onCommitFiberRoot(root, expirationTime);
+    }
+  }
+  function onCommitUnmount(fiber) {
+    if (typeof onCommitFiberUnmount === 'function') {
+      onCommitFiberUnmount(fiber);
+    }
+  }
+
+  var hasBadMapPolyfill;
+
+  {
+    hasBadMapPolyfill = false;
+
+    try {
+      var nonExtensibleObject = Object.preventExtensions({});
+      var testMap = new Map([[nonExtensibleObject, null]]);
+      var testSet = new Set([nonExtensibleObject]); // This is necessary for Rollup to not consider these unused.
+      // https://github.com/rollup/rollup/issues/1771
+      // TODO: we can remove these if Rollup fixes the bug.
+
+      testMap.set(0, 0);
+      testSet.add(0);
+    } catch (e) {
+      // TODO: Consider warning about bad polyfills
+      hasBadMapPolyfill = true;
+    }
+  }
+
+  var debugCounter = 1;
+
+  function FiberNode(tag, pendingProps, key, mode) {
+    // Instance
+    this.tag = tag;
+    this.key = key;
+    this.elementType = null;
+    this.type = null;
+    this.stateNode = null; // Fiber
+
+    this.return = null;
+    this.child = null;
+    this.sibling = null;
+    this.index = 0;
+    this.ref = null;
+    this.pendingProps = pendingProps;
+    this.memoizedProps = null;
+    this.updateQueue = null;
+    this.memoizedState = null;
+    this.dependencies = null;
+    this.mode = mode; // Effects
+
+    this.effectTag = NoEffect;
+    this.nextEffect = null;
+    this.firstEffect = null;
+    this.lastEffect = null;
+    this.expirationTime = NoWork;
+    this.childExpirationTime = NoWork;
+    this.alternate = null;
+
+    {
+      // Note: The following is done to avoid a v8 performance cliff.
+      //
+      // Initializing the fields below to smis and later updating them with
+      // double values will cause Fibers to end up having separate shapes.
+      // This behavior/bug has something to do with Object.preventExtension().
+      // Fortunately this only impacts DEV builds.
+      // Unfortunately it makes React unusably slow for some applications.
+      // To work around this, initialize the fields below with doubles.
+      //
+      // Learn more about this here:
+      // https://github.com/facebook/react/issues/14365
+      // https://bugs.chromium.org/p/v8/issues/detail?id=8538
+      this.actualDuration = Number.NaN;
+      this.actualStartTime = Number.NaN;
+      this.selfBaseDuration = Number.NaN;
+      this.treeBaseDuration = Number.NaN; // It's okay to replace the initial doubles with smis after initialization.
+      // This won't trigger the performance cliff mentioned above,
+      // and it simplifies other profiler code (including DevTools).
+
+      this.actualDuration = 0;
+      this.actualStartTime = -1;
+      this.selfBaseDuration = 0;
+      this.treeBaseDuration = 0;
+    } // This is normally DEV-only except www when it adds listeners.
+    // TODO: remove the User Timing integration in favor of Root Events.
+
+
+    {
+      this._debugID = debugCounter++;
+      this._debugIsCurrentlyTiming = false;
+    }
+
+    {
+      this._debugSource = null;
+      this._debugOwner = null;
+      this._debugNeedsRemount = false;
+      this._debugHookTypes = null;
+
+      if (!hasBadMapPolyfill && typeof Object.preventExtensions === 'function') {
+        Object.preventExtensions(this);
+      }
+    }
+  } // This is a constructor function, rather than a POJO constructor, still
+  // please ensure we do the following:
+  // 1) Nobody should add any instance methods on this. Instance methods can be
+  //    more difficult to predict when they get optimized and they are almost
+  //    never inlined properly in static compilers.
+  // 2) Nobody should rely on `instanceof Fiber` for type testing. We should
+  //    always know when it is a fiber.
+  // 3) We might want to experiment with using numeric keys since they are easier
+  //    to optimize in a non-JIT environment.
+  // 4) We can easily go from a constructor to a createFiber object literal if that
+  //    is faster.
+  // 5) It should be easy to port this to a C struct and keep a C implementation
+  //    compatible.
+
+
+  var createFiber = function (tag, pendingProps, key, mode) {
+    // $FlowFixMe: the shapes are exact here but Flow doesn't like constructors
+    return new FiberNode(tag, pendingProps, key, mode);
+  };
+
+  function shouldConstruct(Component) {
+    var prototype = Component.prototype;
+    return !!(prototype && prototype.isReactComponent);
+  }
+
+  function isSimpleFunctionComponent(type) {
+    return typeof type === 'function' && !shouldConstruct(type) && type.defaultProps === undefined;
+  }
+  function resolveLazyComponentTag(Component) {
+    if (typeof Component === 'function') {
+      return shouldConstruct(Component) ? ClassComponent : FunctionComponent;
+    } else if (Component !== undefined && Component !== null) {
+      var $$typeof = Component.$$typeof;
+
+      if ($$typeof === REACT_FORWARD_REF_TYPE) {
+        return ForwardRef;
+      }
+
+      if ($$typeof === REACT_MEMO_TYPE) {
+        return MemoComponent;
+      }
+    }
+
+    return IndeterminateComponent;
+  } // This is used to create an alternate fiber to do work on.
+
+  function createWorkInProgress(current, pendingProps) {
+    var workInProgress = current.alternate;
+
+    if (workInProgress === null) {
+      // We use a double buffering pooling technique because we know that we'll
+      // only ever need at most two versions of a tree. We pool the "other" unused
+      // node that we're free to reuse. This is lazily created to avoid allocating
+      // extra objects for things that are never updated. It also allow us to
+      // reclaim the extra memory if needed.
+      workInProgress = createFiber(current.tag, pendingProps, current.key, current.mode);
+      workInProgress.elementType = current.elementType;
+      workInProgress.type = current.type;
+      workInProgress.stateNode = current.stateNode;
+
+      {
+        // DEV-only fields
+        {
+          workInProgress._debugID = current._debugID;
+        }
+
+        workInProgress._debugSource = current._debugSource;
+        workInProgress._debugOwner = current._debugOwner;
+        workInProgress._debugHookTypes = current._debugHookTypes;
+      }
+
+      workInProgress.alternate = current;
+      current.alternate = workInProgress;
+    } else {
+      workInProgress.pendingProps = pendingProps; // We already have an alternate.
+      // Reset the effect tag.
+
+      workInProgress.effectTag = NoEffect; // The effect list is no longer valid.
+
+      workInProgress.nextEffect = null;
+      workInProgress.firstEffect = null;
+      workInProgress.lastEffect = null;
+
+      {
+        // We intentionally reset, rather than copy, actualDuration & actualStartTime.
+        // This prevents time from endlessly accumulating in new commits.
+        // This has the downside of resetting values for different priority renders,
+        // But works for yielding (the common case) and should support resuming.
+        workInProgress.actualDuration = 0;
+        workInProgress.actualStartTime = -1;
+      }
+    }
+
+    workInProgress.childExpirationTime = current.childExpirationTime;
+    workInProgress.expirationTime = current.expirationTime;
+    workInProgress.child = current.child;
+    workInProgress.memoizedProps = current.memoizedProps;
+    workInProgress.memoizedState = current.memoizedState;
+    workInProgress.updateQueue = current.updateQueue; // Clone the dependencies object. This is mutated during the render phase, so
+    // it cannot be shared with the current fiber.
+
+    var currentDependencies = current.dependencies;
+    workInProgress.dependencies = currentDependencies === null ? null : {
+      expirationTime: currentDependencies.expirationTime,
+      firstContext: currentDependencies.firstContext,
+      responders: currentDependencies.responders
+    }; // These will be overridden during the parent's reconciliation
+
+    workInProgress.sibling = current.sibling;
+    workInProgress.index = current.index;
+    workInProgress.ref = current.ref;
+
+    {
+      workInProgress.selfBaseDuration = current.selfBaseDuration;
+      workInProgress.treeBaseDuration = current.treeBaseDuration;
+    }
+
+    {
+      workInProgress._debugNeedsRemount = current._debugNeedsRemount;
+
+      switch (workInProgress.tag) {
+        case IndeterminateComponent:
+        case FunctionComponent:
+        case SimpleMemoComponent:
+          workInProgress.type = resolveFunctionForHotReloading(current.type);
+          break;
+
+        case ClassComponent:
+          workInProgress.type = resolveClassForHotReloading(current.type);
+          break;
+
+        case ForwardRef:
+          workInProgress.type = resolveForwardRefForHotReloading(current.type);
+          break;
+      }
+    }
+
+    return workInProgress;
+  } // Used to reuse a Fiber for a second pass.
+
+  function resetWorkInProgress(workInProgress, renderExpirationTime) {
+    // This resets the Fiber to what createFiber or createWorkInProgress would
+    // have set the values to before during the first pass. Ideally this wouldn't
+    // be necessary but unfortunately many code paths reads from the workInProgress
+    // when they should be reading from current and writing to workInProgress.
+    // We assume pendingProps, index, key, ref, return are still untouched to
+    // avoid doing another reconciliation.
+    // Reset the effect tag but keep any Placement tags, since that's something
+    // that child fiber is setting, not the reconciliation.
+    workInProgress.effectTag &= Placement; // The effect list is no longer valid.
+
+    workInProgress.nextEffect = null;
+    workInProgress.firstEffect = null;
+    workInProgress.lastEffect = null;
+    var current = workInProgress.alternate;
+
+    if (current === null) {
+      // Reset to createFiber's initial values.
+      workInProgress.childExpirationTime = NoWork;
+      workInProgress.expirationTime = renderExpirationTime;
+      workInProgress.child = null;
+      workInProgress.memoizedProps = null;
+      workInProgress.memoizedState = null;
+      workInProgress.updateQueue = null;
+      workInProgress.dependencies = null;
+
+      {
+        // Note: We don't reset the actualTime counts. It's useful to accumulate
+        // actual time across multiple render passes.
+        workInProgress.selfBaseDuration = 0;
+        workInProgress.treeBaseDuration = 0;
+      }
+    } else {
+      // Reset to the cloned values that createWorkInProgress would've.
+      workInProgress.childExpirationTime = current.childExpirationTime;
+      workInProgress.expirationTime = current.expirationTime;
+      workInProgress.child = current.child;
+      workInProgress.memoizedProps = current.memoizedProps;
+      workInProgress.memoizedState = current.memoizedState;
+      workInProgress.updateQueue = current.updateQueue; // Clone the dependencies object. This is mutated during the render phase, so
+      // it cannot be shared with the current fiber.
+
+      var currentDependencies = current.dependencies;
+      workInProgress.dependencies = currentDependencies === null ? null : {
+        expirationTime: currentDependencies.expirationTime,
+        firstContext: currentDependencies.firstContext,
+        responders: currentDependencies.responders
+      };
+
+      {
+        // Note: We don't reset the actualTime counts. It's useful to accumulate
+        // actual time across multiple render passes.
+        workInProgress.selfBaseDuration = current.selfBaseDuration;
+        workInProgress.treeBaseDuration = current.treeBaseDuration;
+      }
+    }
+
+    return workInProgress;
+  }
+  function createHostRootFiber(tag) {
+    var mode;
+
+    if (tag === ConcurrentRoot) {
+      mode = ConcurrentMode | BlockingMode | StrictMode;
+    } else if (tag === BlockingRoot) {
+      mode = BlockingMode | StrictMode;
+    } else {
+      mode = NoMode;
+    }
+
+    if ( isDevToolsPresent) {
+      // Always collect profile timings when DevTools are present.
+      // This enables DevTools to start capturing timing at any point–
+      // Without some nodes in the tree having empty base times.
+      mode |= ProfileMode;
+    }
+
+    return createFiber(HostRoot, null, null, mode);
+  }
+  function createFiberFromTypeAndProps(type, // React$ElementType
+  key, pendingProps, owner, mode, expirationTime) {
+    var fiber;
+    var fiberTag = IndeterminateComponent; // The resolved type is set if we know what the final type will be. I.e. it's not lazy.
+
+    var resolvedType = type;
+
+    if (typeof type === 'function') {
+      if (shouldConstruct(type)) {
+        fiberTag = ClassComponent;
+
+        {
+          resolvedType = resolveClassForHotReloading(resolvedType);
+        }
+      } else {
+        {
+          resolvedType = resolveFunctionForHotReloading(resolvedType);
+        }
+      }
+    } else if (typeof type === 'string') {
+      fiberTag = HostComponent;
+    } else {
+      getTag: switch (type) {
+        case REACT_FRAGMENT_TYPE:
+          return createFiberFromFragment(pendingProps.children, mode, expirationTime, key);
+
+        case REACT_CONCURRENT_MODE_TYPE:
+          fiberTag = Mode;
+          mode |= ConcurrentMode | BlockingMode | StrictMode;
+          break;
+
+        case REACT_STRICT_MODE_TYPE:
+          fiberTag = Mode;
+          mode |= StrictMode;
+          break;
+
+        case REACT_PROFILER_TYPE:
+          return createFiberFromProfiler(pendingProps, mode, expirationTime, key);
+
+        case REACT_SUSPENSE_TYPE:
+          return createFiberFromSuspense(pendingProps, mode, expirationTime, key);
+
+        case REACT_SUSPENSE_LIST_TYPE:
+          return createFiberFromSuspenseList(pendingProps, mode, expirationTime, key);
+
+        default:
+          {
+            if (typeof type === 'object' && type !== null) {
+              switch (type.$$typeof) {
+                case REACT_PROVIDER_TYPE:
+                  fiberTag = ContextProvider;
+                  break getTag;
+
+                case REACT_CONTEXT_TYPE:
+                  // This is a consumer
+                  fiberTag = ContextConsumer;
+                  break getTag;
+
+                case REACT_FORWARD_REF_TYPE:
+                  fiberTag = ForwardRef;
+
+                  {
+                    resolvedType = resolveForwardRefForHotReloading(resolvedType);
+                  }
+
+                  break getTag;
+
+                case REACT_MEMO_TYPE:
+                  fiberTag = MemoComponent;
+                  break getTag;
+
+                case REACT_LAZY_TYPE:
+                  fiberTag = LazyComponent;
+                  resolvedType = null;
+                  break getTag;
+
+                case REACT_BLOCK_TYPE:
+                  fiberTag = Block;
+                  break getTag;
+
+              }
+            }
+
+            var info = '';
+
+            {
+              if (type === undefined || typeof type === 'object' && type !== null && Object.keys(type).length === 0) {
+                info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and " + 'named imports.';
+              }
+
+              var ownerName = owner ? getComponentName(owner.type) : null;
+
+              if (ownerName) {
+                info += '\n\nCheck the render method of `' + ownerName + '`.';
+              }
+            }
+
+            {
+              {
+                throw Error( "Element type is invalid: expected a string (for built-in components) or a class/function (for composite components) but got: " + (type == null ? type : typeof type) + "." + info );
+              }
+            }
+          }
+      }
+    }
+
+    fiber = createFiber(fiberTag, pendingProps, key, mode);
+    fiber.elementType = type;
+    fiber.type = resolvedType;
+    fiber.expirationTime = expirationTime;
+    return fiber;
+  }
+  function createFiberFromElement(element, mode, expirationTime) {
+    var owner = null;
+
+    {
+      owner = element._owner;
+    }
+
+    var type = element.type;
+    var key = element.key;
+    var pendingProps = element.props;
+    var fiber = createFiberFromTypeAndProps(type, key, pendingProps, owner, mode, expirationTime);
+
+    {
+      fiber._debugSource = element._source;
+      fiber._debugOwner = element._owner;
+    }
+
+    return fiber;
+  }
+  function createFiberFromFragment(elements, mode, expirationTime, key) {
+    var fiber = createFiber(Fragment, elements, key, mode);
+    fiber.expirationTime = expirationTime;
+    return fiber;
+  }
+
+  function createFiberFromProfiler(pendingProps, mode, expirationTime, key) {
+    {
+      if (typeof pendingProps.id !== 'string' || typeof pendingProps.onRender !== 'function') {
+        error('Profiler must specify an "id" string and "onRender" function as props');
+      }
+    }
+
+    var fiber = createFiber(Profiler, pendingProps, key, mode | ProfileMode); // TODO: The Profiler fiber shouldn't have a type. It has a tag.
+
+    fiber.elementType = REACT_PROFILER_TYPE;
+    fiber.type = REACT_PROFILER_TYPE;
+    fiber.expirationTime = expirationTime;
+    return fiber;
+  }
+
+  function createFiberFromSuspense(pendingProps, mode, expirationTime, key) {
+    var fiber = createFiber(SuspenseComponent, pendingProps, key, mode); // TODO: The SuspenseComponent fiber shouldn't have a type. It has a tag.
+    // This needs to be fixed in getComponentName so that it relies on the tag
+    // instead.
+
+    fiber.type = REACT_SUSPENSE_TYPE;
+    fiber.elementType = REACT_SUSPENSE_TYPE;
+    fiber.expirationTime = expirationTime;
+    return fiber;
+  }
+  function createFiberFromSuspenseList(pendingProps, mode, expirationTime, key) {
+    var fiber = createFiber(SuspenseListComponent, pendingProps, key, mode);
+
+    {
+      // TODO: The SuspenseListComponent fiber shouldn't have a type. It has a tag.
+      // This needs to be fixed in getComponentName so that it relies on the tag
+      // instead.
+      fiber.type = REACT_SUSPENSE_LIST_TYPE;
+    }
+
+    fiber.elementType = REACT_SUSPENSE_LIST_TYPE;
+    fiber.expirationTime = expirationTime;
+    return fiber;
+  }
+  function createFiberFromText(content, mode, expirationTime) {
+    var fiber = createFiber(HostText, content, null, mode);
+    fiber.expirationTime = expirationTime;
+    return fiber;
+  }
+  function createFiberFromHostInstanceForDeletion() {
+    var fiber = createFiber(HostComponent, null, null, NoMode); // TODO: These should not need a type.
+
+    fiber.elementType = 'DELETED';
+    fiber.type = 'DELETED';
+    return fiber;
+  }
+  function createFiberFromPortal(portal, mode, expirationTime) {
+    var pendingProps = portal.children !== null ? portal.children : [];
+    var fiber = createFiber(HostPortal, pendingProps, portal.key, mode);
+    fiber.expirationTime = expirationTime;
+    fiber.stateNode = {
+      containerInfo: portal.containerInfo,
+      pendingChildren: null,
+      // Used by persistent updates
+      implementation: portal.implementation
+    };
+    return fiber;
+  } // Used for stashing WIP properties to replay failed work in DEV.
+
+  function assignFiberPropertiesInDEV(target, source) {
+    if (target === null) {
+      // This Fiber's initial properties will always be overwritten.
+      // We only use a Fiber to ensure the same hidden class so DEV isn't slow.
+      target = createFiber(IndeterminateComponent, null, null, NoMode);
+    } // This is intentionally written as a list of all properties.
+    // We tried to use Object.assign() instead but this is called in
+    // the hottest path, and Object.assign() was too slow:
+    // https://github.com/facebook/react/issues/12502
+    // This code is DEV-only so size is not a concern.
+
+
+    target.tag = source.tag;
+    target.key = source.key;
+    target.elementType = source.elementType;
+    target.type = source.type;
+    target.stateNode = source.stateNode;
+    target.return = source.return;
+    target.child = source.child;
+    target.sibling = source.sibling;
+    target.index = source.index;
+    target.ref = source.ref;
+    target.pendingProps = source.pendingProps;
+    target.memoizedProps = source.memoizedProps;
+    target.updateQueue = source.updateQueue;
+    target.memoizedState = source.memoizedState;
+    target.dependencies = source.dependencies;
+    target.mode = source.mode;
+    target.effectTag = source.effectTag;
+    target.nextEffect = source.nextEffect;
+    target.firstEffect = source.firstEffect;
+    target.lastEffect = source.lastEffect;
+    target.expirationTime = source.expirationTime;
+    target.childExpirationTime = source.childExpirationTime;
+    target.alternate = source.alternate;
+
+    {
+      target.actualDuration = source.actualDuration;
+      target.actualStartTime = source.actualStartTime;
+      target.selfBaseDuration = source.selfBaseDuration;
+      target.treeBaseDuration = source.treeBaseDuration;
+    }
+
+    {
+      target._debugID = source._debugID;
+    }
+
+    target._debugSource = source._debugSource;
+    target._debugOwner = source._debugOwner;
+    target._debugIsCurrentlyTiming = source._debugIsCurrentlyTiming;
+    target._debugNeedsRemount = source._debugNeedsRemount;
+    target._debugHookTypes = source._debugHookTypes;
+    return target;
+  }
+
+  function FiberRootNode(containerInfo, tag, hydrate) {
+    this.tag = tag;
+    this.current = null;
+    this.containerInfo = containerInfo;
+    this.pendingChildren = null;
+    this.pingCache = null;
+    this.finishedExpirationTime = NoWork;
+    this.finishedWork = null;
+    this.timeoutHandle = noTimeout;
+    this.context = null;
+    this.pendingContext = null;
+    this.hydrate = hydrate;
+    this.callbackNode = null;
+    this.callbackPriority = NoPriority;
+    this.firstPendingTime = NoWork;
+    this.firstSuspendedTime = NoWork;
+    this.lastSuspendedTime = NoWork;
+    this.nextKnownPendingLevel = NoWork;
+    this.lastPingedTime = NoWork;
+    this.lastExpiredTime = NoWork;
+
+    {
+      this.interactionThreadID = unstable_getThreadID();
+      this.memoizedInteractions = new Set();
+      this.pendingInteractionMap = new Map();
+    }
+  }
+
+  function createFiberRoot(containerInfo, tag, hydrate, hydrationCallbacks) {
+    var root = new FiberRootNode(containerInfo, tag, hydrate);
+    // stateNode is any.
+
+
+    var uninitializedFiber = createHostRootFiber(tag);
+    root.current = uninitializedFiber;
+    uninitializedFiber.stateNode = root;
+    initializeUpdateQueue(uninitializedFiber);
+    return root;
+  }
+  function isRootSuspendedAtTime(root, expirationTime) {
+    var firstSuspendedTime = root.firstSuspendedTime;
+    var lastSuspendedTime = root.lastSuspendedTime;
+    return firstSuspendedTime !== NoWork && firstSuspendedTime >= expirationTime && lastSuspendedTime <= expirationTime;
+  }
+  function markRootSuspendedAtTime(root, expirationTime) {
+    var firstSuspendedTime = root.firstSuspendedTime;
+    var lastSuspendedTime = root.lastSuspendedTime;
+
+    if (firstSuspendedTime < expirationTime) {
+      root.firstSuspendedTime = expirationTime;
+    }
+
+    if (lastSuspendedTime > expirationTime || firstSuspendedTime === NoWork) {
+      root.lastSuspendedTime = expirationTime;
+    }
+
+    if (expirationTime <= root.lastPingedTime) {
+      root.lastPingedTime = NoWork;
+    }
+
+    if (expirationTime <= root.lastExpiredTime) {
+      root.lastExpiredTime = NoWork;
+    }
+  }
+  function markRootUpdatedAtTime(root, expirationTime) {
+    // Update the range of pending times
+    var firstPendingTime = root.firstPendingTime;
+
+    if (expirationTime > firstPendingTime) {
+      root.firstPendingTime = expirationTime;
+    } // Update the range of suspended times. Treat everything lower priority or
+    // equal to this update as unsuspended.
+
+
+    var firstSuspendedTime = root.firstSuspendedTime;
+
+    if (firstSuspendedTime !== NoWork) {
+      if (expirationTime >= firstSuspendedTime) {
+        // The entire suspended range is now unsuspended.
+        root.firstSuspendedTime = root.lastSuspendedTime = root.nextKnownPendingLevel = NoWork;
+      } else if (expirationTime >= root.lastSuspendedTime) {
+        root.lastSuspendedTime = expirationTime + 1;
+      } // This is a pending level. Check if it's higher priority than the next
+      // known pending level.
+
+
+      if (expirationTime > root.nextKnownPendingLevel) {
+        root.nextKnownPendingLevel = expirationTime;
+      }
+    }
+  }
+  function markRootFinishedAtTime(root, finishedExpirationTime, remainingExpirationTime) {
+    // Update the range of pending times
+    root.firstPendingTime = remainingExpirationTime; // Update the range of suspended times. Treat everything higher priority or
+    // equal to this update as unsuspended.
+
+    if (finishedExpirationTime <= root.lastSuspendedTime) {
+      // The entire suspended range is now unsuspended.
+      root.firstSuspendedTime = root.lastSuspendedTime = root.nextKnownPendingLevel = NoWork;
+    } else if (finishedExpirationTime <= root.firstSuspendedTime) {
+      // Part of the suspended range is now unsuspended. Narrow the range to
+      // include everything between the unsuspended time (non-inclusive) and the
+      // last suspended time.
+      root.firstSuspendedTime = finishedExpirationTime - 1;
+    }
+
+    if (finishedExpirationTime <= root.lastPingedTime) {
+      // Clear the pinged time
+      root.lastPingedTime = NoWork;
+    }
+
+    if (finishedExpirationTime <= root.lastExpiredTime) {
+      // Clear the expired time
+      root.lastExpiredTime = NoWork;
+    }
+  }
+  function markRootExpiredAtTime(root, expirationTime) {
+    var lastExpiredTime = root.lastExpiredTime;
+
+    if (lastExpiredTime === NoWork || lastExpiredTime > expirationTime) {
+      root.lastExpiredTime = expirationTime;
+    }
+  }
+
+  var didWarnAboutNestedUpdates;
+  var didWarnAboutFindNodeInStrictMode;
+
+  {
+    didWarnAboutNestedUpdates = false;
+    didWarnAboutFindNodeInStrictMode = {};
+  }
+
+  function getContextForSubtree(parentComponent) {
+    if (!parentComponent) {
+      return emptyContextObject;
+    }
+
+    var fiber = get(parentComponent);
+    var parentContext = findCurrentUnmaskedContext(fiber);
+
+    if (fiber.tag === ClassComponent) {
+      var Component = fiber.type;
+
+      if (isContextProvider(Component)) {
+        return processChildContext(fiber, Component, parentContext);
+      }
+    }
+
+    return parentContext;
+  }
+
+  function findHostInstanceWithWarning(component, methodName) {
+    {
+      var fiber = get(component);
+
+      if (fiber === undefined) {
+        if (typeof component.render === 'function') {
+          {
+            {
+              throw Error( "Unable to find node on an unmounted component." );
+            }
+          }
+        } else {
+          {
+            {
+              throw Error( "Argument appears to not be a ReactComponent. Keys: " + Object.keys(component) );
+            }
+          }
+        }
+      }
+
+      var hostFiber = findCurrentHostFiber(fiber);
+
+      if (hostFiber === null) {
+        return null;
+      }
+
+      if (hostFiber.mode & StrictMode) {
+        var componentName = getComponentName(fiber.type) || 'Component';
+
+        if (!didWarnAboutFindNodeInStrictMode[componentName]) {
+          didWarnAboutFindNodeInStrictMode[componentName] = true;
+
+          if (fiber.mode & StrictMode) {
+            error('%s is deprecated in StrictMode. ' + '%s was passed an instance of %s which is inside StrictMode. ' + 'Instead, add a ref directly to the element you want to reference. ' + 'Learn more about using refs safely here: ' + 'https://fb.me/react-strict-mode-find-node%s', methodName, methodName, componentName, getStackByFiberInDevAndProd(hostFiber));
+          } else {
+            error('%s is deprecated in StrictMode. ' + '%s was passed an instance of %s which renders StrictMode children. ' + 'Instead, add a ref directly to the element you want to reference. ' + 'Learn more about using refs safely here: ' + 'https://fb.me/react-strict-mode-find-node%s', methodName, methodName, componentName, getStackByFiberInDevAndProd(hostFiber));
+          }
+        }
+      }
+
+      return hostFiber.stateNode;
+    }
+  }
+
+  function createContainer(containerInfo, tag, hydrate, hydrationCallbacks) {
+    return createFiberRoot(containerInfo, tag, hydrate);
+  }
+  function updateContainer(element, container, parentComponent, callback) {
+    {
+      onScheduleRoot(container, element);
+    }
+
+    var current$1 = container.current;
+    var currentTime = requestCurrentTimeForUpdate();
+
+    {
+      // $FlowExpectedError - jest isn't a global, and isn't recognized outside of tests
+      if ('undefined' !== typeof jest) {
+        warnIfUnmockedScheduler(current$1);
+        warnIfNotScopedWithMatchingAct(current$1);
+      }
+    }
+
+    var suspenseConfig = requestCurrentSuspenseConfig();
+    var expirationTime = computeExpirationForFiber(currentTime, current$1, suspenseConfig);
+    var context = getContextForSubtree(parentComponent);
+
+    if (container.context === null) {
+      container.context = context;
+    } else {
+      container.pendingContext = context;
+    }
+
+    {
+      if (isRendering && current !== null && !didWarnAboutNestedUpdates) {
+        didWarnAboutNestedUpdates = true;
+
+        error('Render methods should be a pure function of props and state; ' + 'triggering nested component updates from render is not allowed. ' + 'If necessary, trigger nested updates in componentDidUpdate.\n\n' + 'Check the render method of %s.', getComponentName(current.type) || 'Unknown');
+      }
+    }
+
+    var update = createUpdate(expirationTime, suspenseConfig); // Caution: React DevTools currently depends on this property
+    // being called "element".
+
+    update.payload = {
+      element: element
+    };
+    callback = callback === undefined ? null : callback;
+
+    if (callback !== null) {
+      {
+        if (typeof callback !== 'function') {
+          error('render(...): Expected the last optional `callback` argument to be a ' + 'function. Instead received: %s.', callback);
+        }
+      }
+
+      update.callback = callback;
+    }
+
+    enqueueUpdate(current$1, update);
+    scheduleWork(current$1, expirationTime);
+    return expirationTime;
+  }
+  function getPublicRootInstance(container) {
+    var containerFiber = container.current;
+
+    if (!containerFiber.child) {
+      return null;
+    }
+
+    switch (containerFiber.child.tag) {
+      case HostComponent:
+        return getPublicInstance(containerFiber.child.stateNode);
+
+      default:
+        return containerFiber.child.stateNode;
+    }
+  }
+
+  function markRetryTimeImpl(fiber, retryTime) {
+    var suspenseState = fiber.memoizedState;
+
+    if (suspenseState !== null && suspenseState.dehydrated !== null) {
+      if (suspenseState.retryTime < retryTime) {
+        suspenseState.retryTime = retryTime;
+      }
+    }
+  } // Increases the priority of thennables when they resolve within this boundary.
+
+
+  function markRetryTimeIfNotHydrated(fiber, retryTime) {
+    markRetryTimeImpl(fiber, retryTime);
+    var alternate = fiber.alternate;
+
+    if (alternate) {
+      markRetryTimeImpl(alternate, retryTime);
+    }
+  }
+
+  function attemptUserBlockingHydration$1(fiber) {
+    if (fiber.tag !== SuspenseComponent) {
+      // We ignore HostRoots here because we can't increase
+      // their priority and they should not suspend on I/O,
+      // since you have to wrap anything that might suspend in
+      // Suspense.
+      return;
+    }
+
+    var expTime = computeInteractiveExpiration(requestCurrentTimeForUpdate());
+    scheduleWork(fiber, expTime);
+    markRetryTimeIfNotHydrated(fiber, expTime);
+  }
+  function attemptContinuousHydration$1(fiber) {
+    if (fiber.tag !== SuspenseComponent) {
+      // We ignore HostRoots here because we can't increase
+      // their priority and they should not suspend on I/O,
+      // since you have to wrap anything that might suspend in
+      // Suspense.
+      return;
+    }
+
+    scheduleWork(fiber, ContinuousHydration);
+    markRetryTimeIfNotHydrated(fiber, ContinuousHydration);
+  }
+  function attemptHydrationAtCurrentPriority$1(fiber) {
+    if (fiber.tag !== SuspenseComponent) {
+      // We ignore HostRoots here because we can't increase
+      // their priority other than synchronously flush it.
+      return;
+    }
+
+    var currentTime = requestCurrentTimeForUpdate();
+    var expTime = computeExpirationForFiber(currentTime, fiber, null);
+    scheduleWork(fiber, expTime);
+    markRetryTimeIfNotHydrated(fiber, expTime);
+  }
+  function findHostInstanceWithNoPortals(fiber) {
+    var hostFiber = findCurrentHostFiberWithNoPortals(fiber);
+
+    if (hostFiber === null) {
+      return null;
+    }
+
+    if (hostFiber.tag === FundamentalComponent) {
+      return hostFiber.stateNode.instance;
+    }
+
+    return hostFiber.stateNode;
+  }
+
+  var shouldSuspendImpl = function (fiber) {
+    return false;
+  };
+
+  function shouldSuspend(fiber) {
+    return shouldSuspendImpl(fiber);
+  }
+  var overrideHookState = null;
+  var overrideProps = null;
+  var scheduleUpdate = null;
+  var setSuspenseHandler = null;
+
+  {
+    var copyWithSetImpl = function (obj, path, idx, value) {
+      if (idx >= path.length) {
+        return value;
+      }
+
+      var key = path[idx];
+      var updated = Array.isArray(obj) ? obj.slice() : _assign({}, obj); // $FlowFixMe number or string is fine here
+
+      updated[key] = copyWithSetImpl(obj[key], path, idx + 1, value);
+      return updated;
+    };
+
+    var copyWithSet = function (obj, path, value) {
+      return copyWithSetImpl(obj, path, 0, value);
+    }; // Support DevTools editable values for useState and useReducer.
+
+
+    overrideHookState = function (fiber, id, path, value) {
+      // For now, the "id" of stateful hooks is just the stateful hook index.
+      // This may change in the future with e.g. nested hooks.
+      var currentHook = fiber.memoizedState;
+
+      while (currentHook !== null && id > 0) {
+        currentHook = currentHook.next;
+        id--;
+      }
+
+      if (currentHook !== null) {
+        var newState = copyWithSet(currentHook.memoizedState, path, value);
+        currentHook.memoizedState = newState;
+        currentHook.baseState = newState; // We aren't actually adding an update to the queue,
+        // because there is no update we can add for useReducer hooks that won't trigger an error.
+        // (There's no appropriate action type for DevTools overrides.)
+        // As a result though, React will see the scheduled update as a noop and bailout.
+        // Shallow cloning props works as a workaround for now to bypass the bailout check.
+
+        fiber.memoizedProps = _assign({}, fiber.memoizedProps);
+        scheduleWork(fiber, Sync);
+      }
+    }; // Support DevTools props for function components, forwardRef, memo, host components, etc.
+
+
+    overrideProps = function (fiber, path, value) {
+      fiber.pendingProps = copyWithSet(fiber.memoizedProps, path, value);
+
+      if (fiber.alternate) {
+        fiber.alternate.pendingProps = fiber.pendingProps;
+      }
+
+      scheduleWork(fiber, Sync);
+    };
+
+    scheduleUpdate = function (fiber) {
+      scheduleWork(fiber, Sync);
+    };
+
+    setSuspenseHandler = function (newShouldSuspendImpl) {
+      shouldSuspendImpl = newShouldSuspendImpl;
+    };
+  }
+
+  function injectIntoDevTools(devToolsConfig) {
+    var findFiberByHostInstance = devToolsConfig.findFiberByHostInstance;
+    var ReactCurrentDispatcher = ReactSharedInternals.ReactCurrentDispatcher;
+    return injectInternals(_assign({}, devToolsConfig, {
+      overrideHookState: overrideHookState,
+      overrideProps: overrideProps,
+      setSuspenseHandler: setSuspenseHandler,
+      scheduleUpdate: scheduleUpdate,
+      currentDispatcherRef: ReactCurrentDispatcher,
+      findHostInstanceByFiber: function (fiber) {
+        var hostFiber = findCurrentHostFiber(fiber);
+
+        if (hostFiber === null) {
+          return null;
+        }
+
+        return hostFiber.stateNode;
+      },
+      findFiberByHostInstance: function (instance) {
+        if (!findFiberByHostInstance) {
+          // Might not be implemented by the renderer.
+          return null;
+        }
+
+        return findFiberByHostInstance(instance);
+      },
+      // React Refresh
+      findHostInstancesForRefresh:  findHostInstancesForRefresh ,
+      scheduleRefresh:  scheduleRefresh ,
+      scheduleRoot:  scheduleRoot ,
+      setRefreshHandler:  setRefreshHandler ,
+      // Enables DevTools to append owner stacks to error messages in DEV mode.
+      getCurrentFiber:  function () {
+        return current;
+      }
+    }));
+  }
+  var IsSomeRendererActing$1 = ReactSharedInternals.IsSomeRendererActing;
+
+  function ReactDOMRoot(container, options) {
+    this._internalRoot = createRootImpl(container, ConcurrentRoot, options);
+  }
+
+  function ReactDOMBlockingRoot(container, tag, options) {
+    this._internalRoot = createRootImpl(container, tag, options);
+  }
+
+  ReactDOMRoot.prototype.render = ReactDOMBlockingRoot.prototype.render = function (children) {
+    var root = this._internalRoot;
+
+    {
+      if (typeof arguments[1] === 'function') {
+        error('render(...): does not support the second callback argument. ' + 'To execute a side effect after rendering, declare it in a component body with useEffect().');
+      }
+
+      var container = root.containerInfo;
+
+      if (container.nodeType !== COMMENT_NODE) {
+        var hostInstance = findHostInstanceWithNoPortals(root.current);
+
+        if (hostInstance) {
+          if (hostInstance.parentNode !== container) {
+            error('render(...): It looks like the React-rendered content of the ' + 'root container was removed without using React. This is not ' + 'supported and will cause errors. Instead, call ' + "root.unmount() to empty a root's container.");
+          }
+        }
+      }
+    }
+
+    updateContainer(children, root, null, null);
+  };
+
+  ReactDOMRoot.prototype.unmount = ReactDOMBlockingRoot.prototype.unmount = function () {
+    {
+      if (typeof arguments[0] === 'function') {
+        error('unmount(...): does not support a callback argument. ' + 'To execute a side effect after rendering, declare it in a component body with useEffect().');
+      }
+    }
+
+    var root = this._internalRoot;
+    var container = root.containerInfo;
+    updateContainer(null, root, null, function () {
+      unmarkContainerAsRoot(container);
+    });
+  };
+
+  function createRootImpl(container, tag, options) {
+    // Tag is either LegacyRoot or Concurrent Root
+    var hydrate = options != null && options.hydrate === true;
+    var hydrationCallbacks = options != null && options.hydrationOptions || null;
+    var root = createContainer(container, tag, hydrate);
+    markContainerAsRoot(root.current, container);
+
+    if (hydrate && tag !== LegacyRoot) {
+      var doc = container.nodeType === DOCUMENT_NODE ? container : container.ownerDocument;
+      eagerlyTrapReplayableEvents(container, doc);
+    }
+
+    return root;
+  }
+  function createLegacyRoot(container, options) {
+    return new ReactDOMBlockingRoot(container, LegacyRoot, options);
+  }
+  function isValidContainer(node) {
+    return !!(node && (node.nodeType === ELEMENT_NODE || node.nodeType === DOCUMENT_NODE || node.nodeType === DOCUMENT_FRAGMENT_NODE || node.nodeType === COMMENT_NODE && node.nodeValue === ' react-mount-point-unstable '));
+  }
+
+  var ReactCurrentOwner$3 = ReactSharedInternals.ReactCurrentOwner;
+  var topLevelUpdateWarnings;
+  var warnedAboutHydrateAPI = false;
+
+  {
+    topLevelUpdateWarnings = function (container) {
+      if (container._reactRootContainer && container.nodeType !== COMMENT_NODE) {
+        var hostInstance = findHostInstanceWithNoPortals(container._reactRootContainer._internalRoot.current);
+
+        if (hostInstance) {
+          if (hostInstance.parentNode !== container) {
+            error('render(...): It looks like the React-rendered content of this ' + 'container was removed without using React. This is not ' + 'supported and will cause errors. Instead, call ' + 'ReactDOM.unmountComponentAtNode to empty a container.');
+          }
+        }
+      }
+
+      var isRootRenderedBySomeReact = !!container._reactRootContainer;
+      var rootEl = getReactRootElementInContainer(container);
+      var hasNonRootReactChild = !!(rootEl && getInstanceFromNode$1(rootEl));
+
+      if (hasNonRootReactChild && !isRootRenderedBySomeReact) {
+        error('render(...): Replacing React-rendered children with a new root ' + 'component. If you intended to update the children of this node, ' + 'you should instead have the existing children update their state ' + 'and render the new components instead of calling ReactDOM.render.');
+      }
+
+      if (container.nodeType === ELEMENT_NODE && container.tagName && container.tagName.toUpperCase() === 'BODY') {
+        error('render(): Rendering components directly into document.body is ' + 'discouraged, since its children are often manipulated by third-party ' + 'scripts and browser extensions. This may lead to subtle ' + 'reconciliation issues. Try rendering into a container element created ' + 'for your app.');
+      }
+    };
+  }
+
+  function getReactRootElementInContainer(container) {
+    if (!container) {
+      return null;
+    }
+
+    if (container.nodeType === DOCUMENT_NODE) {
+      return container.documentElement;
+    } else {
+      return container.firstChild;
+    }
+  }
+
+  function shouldHydrateDueToLegacyHeuristic(container) {
+    var rootElement = getReactRootElementInContainer(container);
+    return !!(rootElement && rootElement.nodeType === ELEMENT_NODE && rootElement.hasAttribute(ROOT_ATTRIBUTE_NAME));
+  }
+
+  function legacyCreateRootFromDOMContainer(container, forceHydrate) {
+    var shouldHydrate = forceHydrate || shouldHydrateDueToLegacyHeuristic(container); // First clear any existing content.
+
+    if (!shouldHydrate) {
+      var warned = false;
+      var rootSibling;
+
+      while (rootSibling = container.lastChild) {
+        {
+          if (!warned && rootSibling.nodeType === ELEMENT_NODE && rootSibling.hasAttribute(ROOT_ATTRIBUTE_NAME)) {
+            warned = true;
+
+            error('render(): Target node has markup rendered by React, but there ' + 'are unrelated nodes as well. This is most commonly caused by ' + 'white-space inserted around server-rendered markup.');
+          }
+        }
+
+        container.removeChild(rootSibling);
+      }
+    }
+
+    {
+      if (shouldHydrate && !forceHydrate && !warnedAboutHydrateAPI) {
+        warnedAboutHydrateAPI = true;
+
+        warn('render(): Calling ReactDOM.render() to hydrate server-rendered markup ' + 'will stop working in React v17. Replace the ReactDOM.render() call ' + 'with ReactDOM.hydrate() if you want React to attach to the server HTML.');
+      }
+    }
+
+    return createLegacyRoot(container, shouldHydrate ? {
+      hydrate: true
+    } : undefined);
+  }
+
+  function warnOnInvalidCallback$1(callback, callerName) {
+    {
+      if (callback !== null && typeof callback !== 'function') {
+        error('%s(...): Expected the last optional `callback` argument to be a ' + 'function. Instead received: %s.', callerName, callback);
+      }
+    }
+  }
+
+  function legacyRenderSubtreeIntoContainer(parentComponent, children, container, forceHydrate, callback) {
+    {
+      topLevelUpdateWarnings(container);
+      warnOnInvalidCallback$1(callback === undefined ? null : callback, 'render');
+    } // TODO: Without `any` type, Flow says "Property cannot be accessed on any
+    // member of intersection type." Whyyyyyy.
+
+
+    var root = container._reactRootContainer;
+    var fiberRoot;
+
+    if (!root) {
+      // Initial mount
+      root = container._reactRootContainer = legacyCreateRootFromDOMContainer(container, forceHydrate);
+      fiberRoot = root._internalRoot;
+
+      if (typeof callback === 'function') {
+        var originalCallback = callback;
+
+        callback = function () {
+          var instance = getPublicRootInstance(fiberRoot);
+          originalCallback.call(instance);
+        };
+      } // Initial mount should not be batched.
+
+
+      unbatchedUpdates(function () {
+        updateContainer(children, fiberRoot, parentComponent, callback);
+      });
+    } else {
+      fiberRoot = root._internalRoot;
+
+      if (typeof callback === 'function') {
+        var _originalCallback = callback;
+
+        callback = function () {
+          var instance = getPublicRootInstance(fiberRoot);
+
+          _originalCallback.call(instance);
+        };
+      } // Update
+
+
+      updateContainer(children, fiberRoot, parentComponent, callback);
+    }
+
+    return getPublicRootInstance(fiberRoot);
+  }
+
+  function findDOMNode(componentOrElement) {
+    {
+      var owner = ReactCurrentOwner$3.current;
+
+      if (owner !== null && owner.stateNode !== null) {
+        var warnedAboutRefsInRender = owner.stateNode._warnedAboutRefsInRender;
+
+        if (!warnedAboutRefsInRender) {
+          error('%s is accessing findDOMNode inside its render(). ' + 'render() should be a pure function of props and state. It should ' + 'never access something that requires stale data from the previous ' + 'render, such as refs. Move this logic to componentDidMount and ' + 'componentDidUpdate instead.', getComponentName(owner.type) || 'A component');
+        }
+
+        owner.stateNode._warnedAboutRefsInRender = true;
+      }
+    }
+
+    if (componentOrElement == null) {
+      return null;
+    }
+
+    if (componentOrElement.nodeType === ELEMENT_NODE) {
+      return componentOrElement;
+    }
+
+    {
+      return findHostInstanceWithWarning(componentOrElement, 'findDOMNode');
+    }
+  }
+  function hydrate(element, container, callback) {
+    if (!isValidContainer(container)) {
+      {
+        throw Error( "Target container is not a DOM element." );
+      }
+    }
+
+    {
+      var isModernRoot = isContainerMarkedAsRoot(container) && container._reactRootContainer === undefined;
+
+      if (isModernRoot) {
+        error('You are calling ReactDOM.hydrate() on a container that was previously ' + 'passed to ReactDOM.createRoot(). This is not supported. ' + 'Did you mean to call createRoot(container, {hydrate: true}).render(element)?');
+      }
+    } // TODO: throw or warn if we couldn't hydrate?
+
+
+    return legacyRenderSubtreeIntoContainer(null, element, container, true, callback);
+  }
+  function render(element, container, callback) {
+    if (!isValidContainer(container)) {
+      {
+        throw Error( "Target container is not a DOM element." );
+      }
+    }
+
+    {
+      var isModernRoot = isContainerMarkedAsRoot(container) && container._reactRootContainer === undefined;
+
+      if (isModernRoot) {
+        error('You are calling ReactDOM.render() on a container that was previously ' + 'passed to ReactDOM.createRoot(). This is not supported. ' + 'Did you mean to call root.render(element)?');
+      }
+    }
+
+    return legacyRenderSubtreeIntoContainer(null, element, container, false, callback);
+  }
+  function unstable_renderSubtreeIntoContainer(parentComponent, element, containerNode, callback) {
+    if (!isValidContainer(containerNode)) {
+      {
+        throw Error( "Target container is not a DOM element." );
+      }
+    }
+
+    if (!(parentComponent != null && has$1(parentComponent))) {
+      {
+        throw Error( "parentComponent must be a valid React Component" );
+      }
+    }
+
+    return legacyRenderSubtreeIntoContainer(parentComponent, element, containerNode, false, callback);
+  }
+  function unmountComponentAtNode(container) {
+    if (!isValidContainer(container)) {
+      {
+        throw Error( "unmountComponentAtNode(...): Target container is not a DOM element." );
+      }
+    }
+
+    {
+      var isModernRoot = isContainerMarkedAsRoot(container) && container._reactRootContainer === undefined;
+
+      if (isModernRoot) {
+        error('You are calling ReactDOM.unmountComponentAtNode() on a container that was previously ' + 'passed to ReactDOM.createRoot(). This is not supported. Did you mean to call root.unmount()?');
+      }
+    }
+
+    if (container._reactRootContainer) {
+      {
+        var rootEl = getReactRootElementInContainer(container);
+        var renderedByDifferentReact = rootEl && !getInstanceFromNode$1(rootEl);
+
+        if (renderedByDifferentReact) {
+          error("unmountComponentAtNode(): The node you're attempting to unmount " + 'was rendered by another copy of React.');
+        }
+      } // Unmount should not be batched.
+
+
+      unbatchedUpdates(function () {
+        legacyRenderSubtreeIntoContainer(null, null, container, false, function () {
+          // $FlowFixMe This should probably use `delete container._reactRootContainer`
+          container._reactRootContainer = null;
+          unmarkContainerAsRoot(container);
+        });
+      }); // If you call unmountComponentAtNode twice in quick succession, you'll
+      // get `true` twice. That's probably fine?
+
+      return true;
+    } else {
+      {
+        var _rootEl = getReactRootElementInContainer(container);
+
+        var hasNonRootReactChild = !!(_rootEl && getInstanceFromNode$1(_rootEl)); // Check if the container itself is a React root node.
+
+        var isContainerReactRoot = container.nodeType === ELEMENT_NODE && isValidContainer(container.parentNode) && !!container.parentNode._reactRootContainer;
+
+        if (hasNonRootReactChild) {
+          error("unmountComponentAtNode(): The node you're attempting to unmount " + 'was rendered by React and is not a top-level container. %s', isContainerReactRoot ? 'You may have accidentally passed in a React root node instead ' + 'of its container.' : 'Instead, have the parent component update its state and ' + 'rerender in order to remove this component.');
+        }
+      }
+
+      return false;
+    }
+  }
+
+  function createPortal(children, containerInfo, // TODO: figure out the API for cross-renderer implementation.
+  implementation) {
+    var key = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : null;
+    return {
+      // This tag allow us to uniquely identify this as a React Portal
+      $$typeof: REACT_PORTAL_TYPE,
+      key: key == null ? null : '' + key,
+      children: children,
+      containerInfo: containerInfo,
+      implementation: implementation
+    };
+  }
+
+  var ReactVersion = '16.14.0';
+
+  setAttemptUserBlockingHydration(attemptUserBlockingHydration$1);
+  setAttemptContinuousHydration(attemptContinuousHydration$1);
+  setAttemptHydrationAtCurrentPriority(attemptHydrationAtCurrentPriority$1);
+  var didWarnAboutUnstableCreatePortal = false;
+
+  {
+    if (typeof Map !== 'function' || // $FlowIssue Flow incorrectly thinks Map has no prototype
+    Map.prototype == null || typeof Map.prototype.forEach !== 'function' || typeof Set !== 'function' || // $FlowIssue Flow incorrectly thinks Set has no prototype
+    Set.prototype == null || typeof Set.prototype.clear !== 'function' || typeof Set.prototype.forEach !== 'function') {
+      error('React depends on Map and Set built-in types. Make sure that you load a ' + 'polyfill in older browsers. https://fb.me/react-polyfills');
+    }
+  }
+
+  setRestoreImplementation(restoreControlledState$3);
+  setBatchingImplementation(batchedUpdates$1, discreteUpdates$1, flushDiscreteUpdates, batchedEventUpdates$1);
+
+  function createPortal$1(children, container) {
+    var key = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;
+
+    if (!isValidContainer(container)) {
+      {
+        throw Error( "Target container is not a DOM element." );
+      }
+    } // TODO: pass ReactDOM portal implementation as third argument
+    // $FlowFixMe The Flow type is opaque but there's no way to actually create it.
+
+
+    return createPortal(children, container, null, key);
+  }
+
+  function renderSubtreeIntoContainer(parentComponent, element, containerNode, callback) {
+
+    return unstable_renderSubtreeIntoContainer(parentComponent, element, containerNode, callback);
+  }
+
+  function unstable_createPortal(children, container) {
+    var key = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : null;
+
+    {
+      if (!didWarnAboutUnstableCreatePortal) {
+        didWarnAboutUnstableCreatePortal = true;
+
+        warn('The ReactDOM.unstable_createPortal() alias has been deprecated, ' + 'and will be removed in React 17+. Update your code to use ' + 'ReactDOM.createPortal() instead. It has the exact same API, ' + 'but without the "unstable_" prefix.');
+      }
+    }
+
+    return createPortal$1(children, container, key);
+  }
+
+  var Internals = {
+    // Keep in sync with ReactDOMUnstableNativeDependencies.js
+    // ReactTestUtils.js, and ReactTestUtilsAct.js. This is an array for better minification.
+    Events: [getInstanceFromNode$1, getNodeFromInstance$1, getFiberCurrentPropsFromNode$1, injectEventPluginsByName, eventNameDispatchConfigs, accumulateTwoPhaseDispatches, accumulateDirectDispatches, enqueueStateRestore, restoreStateIfNeeded, dispatchEvent, runEventsInBatch, flushPassiveEffects, IsThisRendererActing]
+  };
+  var foundDevTools = injectIntoDevTools({
+    findFiberByHostInstance: getClosestInstanceFromNode,
+    bundleType:  1 ,
+    version: ReactVersion,
+    rendererPackageName: 'react-dom'
+  });
+
+  {
+    if (!foundDevTools && canUseDOM && window.top === window.self) {
+      // If we're in Chrome or Firefox, provide a download link if not installed.
+      if (navigator.userAgent.indexOf('Chrome') > -1 && navigator.userAgent.indexOf('Edge') === -1 || navigator.userAgent.indexOf('Firefox') > -1) {
+        var protocol = window.location.protocol; // Don't warn in exotic cases like chrome-extension://.
+
+        if (/^(https?|file):$/.test(protocol)) {
+          // eslint-disable-next-line react-internal/no-production-logging
+          console.info('%cDownload the React DevTools ' + 'for a better development experience: ' + 'https://fb.me/react-devtools' + (protocol === 'file:' ? '\nYou might need to use a local HTTP server (instead of file://): ' + 'https://fb.me/react-devtools-faq' : ''), 'font-weight:bold');
+        }
+      }
+    }
+  }
+
+  exports.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED = Internals;
+  exports.createPortal = createPortal$1;
+  exports.findDOMNode = findDOMNode;
+  exports.flushSync = flushSync;
+  exports.hydrate = hydrate;
+  exports.render = render;
+  exports.unmountComponentAtNode = unmountComponentAtNode;
+  exports.unstable_batchedUpdates = batchedUpdates$1;
+  exports.unstable_createPortal = unstable_createPortal;
+  exports.unstable_renderSubtreeIntoContainer = renderSubtreeIntoContainer;
+  exports.version = ReactVersion;
+
+})));
diff --git a/igv_component/node_modules/react-dom/umd/react-dom.production.min.js b/igv_component/node_modules/react-dom/umd/react-dom.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..e6eecc7f08ba937a68d1002c02c8da628fc42a2a
--- /dev/null
+++ b/igv_component/node_modules/react-dom/umd/react-dom.production.min.js
@@ -0,0 +1,239 @@
+/** @license React v16.14.0
+ * react-dom.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+/*
+ Modernizr 3.0.0pre (Custom Build) | MIT
+*/
+'use strict';(function(I,ea){"object"===typeof exports&&"undefined"!==typeof module?ea(exports,require("react")):"function"===typeof define&&define.amd?define(["exports","react"],ea):(I=I||self,ea(I.ReactDOM={},I.React))})(this,function(I,ea){function k(a){for(var b="https://reactjs.org/docs/error-decoder.html?invariant="+a,c=1;c<arguments.length;c++)b+="&args[]="+encodeURIComponent(arguments[c]);return"Minified React error #"+a+"; visit "+b+" for the full message or use the non-minified dev environment for full errors and additional helpful warnings."}
+function ji(a,b,c,d,e,f,g,h,m){yb=!1;gc=null;ki.apply(li,arguments)}function mi(a,b,c,d,e,f,g,h,m){ji.apply(this,arguments);if(yb){if(yb){var n=gc;yb=!1;gc=null}else throw Error(k(198));hc||(hc=!0,pd=n)}}function lf(a,b,c){var d=a.type||"unknown-event";a.currentTarget=mf(c);mi(d,b,void 0,a);a.currentTarget=null}function nf(){if(ic)for(var a in cb){var b=cb[a],c=ic.indexOf(a);if(!(-1<c))throw Error(k(96,a));if(!jc[c]){if(!b.extractEvents)throw Error(k(97,a));jc[c]=b;c=b.eventTypes;for(var d in c){var e=
+void 0;var f=c[d],g=b,h=d;if(qd.hasOwnProperty(h))throw Error(k(99,h));qd[h]=f;var m=f.phasedRegistrationNames;if(m){for(e in m)m.hasOwnProperty(e)&&of(m[e],g,h);e=!0}else f.registrationName?(of(f.registrationName,g,h),e=!0):e=!1;if(!e)throw Error(k(98,d,a));}}}}function of(a,b,c){if(db[a])throw Error(k(100,a));db[a]=b;rd[a]=b.eventTypes[c].dependencies}function pf(a){var b=!1,c;for(c in a)if(a.hasOwnProperty(c)){var d=a[c];if(!cb.hasOwnProperty(c)||cb[c]!==d){if(cb[c])throw Error(k(102,c));cb[c]=
+d;b=!0}}b&&nf()}function qf(a){if(a=rf(a)){if("function"!==typeof sd)throw Error(k(280));var b=a.stateNode;b&&(b=td(b),sd(a.stateNode,a.type,b))}}function sf(a){eb?fb?fb.push(a):fb=[a]:eb=a}function tf(){if(eb){var a=eb,b=fb;fb=eb=null;qf(a);if(b)for(a=0;a<b.length;a++)qf(b[a])}}function ud(){if(null!==eb||null!==fb)vd(),tf()}function uf(a,b,c){if(wd)return a(b,c);wd=!0;try{return vf(a,b,c)}finally{wd=!1,ud()}}function ni(a){if(wf.call(xf,a))return!0;if(wf.call(yf,a))return!1;if(oi.test(a))return xf[a]=
+!0;yf[a]=!0;return!1}function pi(a,b,c,d){if(null!==c&&0===c.type)return!1;switch(typeof b){case "function":case "symbol":return!0;case "boolean":if(d)return!1;if(null!==c)return!c.acceptsBooleans;a=a.toLowerCase().slice(0,5);return"data-"!==a&&"aria-"!==a;default:return!1}}function qi(a,b,c,d){if(null===b||"undefined"===typeof b||pi(a,b,c,d))return!0;if(d)return!1;if(null!==c)switch(c.type){case 3:return!b;case 4:return!1===b;case 5:return isNaN(b);case 6:return isNaN(b)||1>b}return!1}function L(a,
+b,c,d,e,f){this.acceptsBooleans=2===b||3===b||4===b;this.attributeName=d;this.attributeNamespace=e;this.mustUseProperty=c;this.propertyName=a;this.type=b;this.sanitizeURL=f}function xd(a,b,c,d){var e=E.hasOwnProperty(b)?E[b]:null;var f=null!==e?0===e.type:d?!1:!(2<b.length)||"o"!==b[0]&&"O"!==b[0]||"n"!==b[1]&&"N"!==b[1]?!1:!0;f||(qi(b,c,e,d)&&(c=null),d||null===e?ni(b)&&(null===c?a.removeAttribute(b):a.setAttribute(b,""+c)):e.mustUseProperty?a[e.propertyName]=null===c?3===e.type?!1:"":c:(b=e.attributeName,
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diff --git a/igv_component/node_modules/react-dom/umd/react-dom.profiling.min.js b/igv_component/node_modules/react-dom/umd/react-dom.profiling.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..b18526a46568de2e177d200cfe0d3f64b746c97e
--- /dev/null
+++ b/igv_component/node_modules/react-dom/umd/react-dom.profiling.min.js
@@ -0,0 +1,247 @@
+/** @license React v16.14.0
+ * react-dom.profiling.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+/*
+ Modernizr 3.0.0pre (Custom Build) | MIT
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+b=null):(S(a,b,g,c),b=b.child),b;case 6:return null===a&&Ne(b),null;case 13:return Gh(a,b,c);case 4:return Ce(b,b.stateNode.containerInfo),d=b.pendingProps,null===a?b.child=Ab(b,null,d,c):S(a,b,d,c),b.child;case 11:return d=b.type,e=b.pendingProps,e=b.elementType===d?e:aa(d,e),Ah(a,b,d,e,c);case 7:return S(a,b,b.pendingProps,c),b.child;case 8:return S(a,b,b.pendingProps.children,c),b.child;case 12:return b.effectTag|=4,S(a,b,b.pendingProps.children,c),b.child;case 10:a:{d=b.type._context;e=b.pendingProps;
+g=b.memoizedProps;f=e.value;var h=b.type._context;z(Oc,h._currentValue);h._currentValue=f;if(null!==g)if(h=g.value,f=Qa(h,f)?0:("function"===typeof d._calculateChangedBits?d._calculateChangedBits(h,f):1073741823)|0,0===f){if(g.children===e.children&&!C.current){b=qa(a,b,c);break a}}else for(h=b.child,null!==h&&(h.return=b);null!==h;){var k=h.dependencies;if(null!==k){g=h.child;for(var m=k.firstContext;null!==m;){if(m.context===d&&0!==(m.observedBits&f)){1===h.tag&&(m=Da(c,null),m.tag=Pc,Ea(h,m));
+h.expirationTime<c&&(h.expirationTime=c);m=h.alternate;null!==m&&m.expirationTime<c&&(m.expirationTime=c);eh(h.return,c);k.expirationTime<c&&(k.expirationTime=c);break}m=m.next}}else g=10===h.tag?h.type===b.type?null:h.child:h.child;if(null!==g)g.return=h;else for(g=h;null!==g;){if(g===b){g=null;break}h=g.sibling;if(null!==h){h.return=g.return;g=h;break}g=g.return}h=g}S(a,b,e.children,c);b=b.child}return b;case 9:return e=b.type,f=b.pendingProps,d=f.children,ub(b,c),e=W(e,f.unstable_observedBits),
+d=d(e),b.effectTag|=1,S(a,b,d,c),b.child;case 14:return e=b.type,f=aa(e,b.pendingProps),f=aa(e.type,f),Bh(a,b,e,f,d,c);case 15:return Ch(a,b,b.type,b.pendingProps,d,c);case 17:return d=b.type,e=b.pendingProps,e=b.elementType===d?e:aa(d,e),null!==a&&(a.alternate=null,b.alternate=null,b.effectTag|=2),b.tag=1,O(d)?(a=!0,Hc(b)):a=!1,ub(b,c),kh(b,d,e),ze(b,d,e,c),Se(null,b,d,!0,a,c);case 19:return Ih(a,b,c)}throw Error(l(156,b.tag));};var pf=null,Ze=null,bk="undefined"!==typeof __REACT_DEVTOOLS_GLOBAL_HOOK__,
+ja=function(a,b,c,d){return new Wj(a,b,c,d)};tf.prototype.render=function(a){ud(a,this._internalRoot,null,null)};tf.prototype.unmount=function(){var a=this._internalRoot,b=a.containerInfo;ud(null,a,null,function(){b[Pb]=null})};var Vi=function(a){if(13===a.tag){var b=Lc(ia(),150,100);Ia(a,b);sf(a,b)}};var kg=function(a){13===a.tag&&(Ia(a,3),sf(a,3))};var Ti=function(a){if(13===a.tag){var b=ia();b=Va(b,a,null);Ia(a,b);sf(a,b)}};Cd=function(a,b,c){switch(b){case "input":Nd(a,c);b=c.name;if("radio"===
+c.type&&null!=b){for(c=a;c.parentNode;)c=c.parentNode;c=c.querySelectorAll("input[name="+JSON.stringify(""+b)+'][type="radio"]');for(b=0;b<c.length;b++){var d=c[b];if(d!==a&&d.form===a.form){var e=ke(d);if(!e)throw Error(l(90));Tf(d);Nd(d,e)}}}break;case "textarea":Yf(a,c);break;case "select":b=c.value,null!=b&&kb(a,!!c.multiple,b,!1)}};(function(a,b,c,d){oe=a;rg=b;Fd=c;If=d})(ei,function(a,b,c,d,e){var f=r;r|=4;try{return Ca(98,a.bind(null,b,c,d,e))}finally{r=f,r===H&&ea()}},function(){(r&(1|ba|
+ka))===H&&(Mj(),Bb())},function(a,b){var c=r;r|=2;try{return a(b)}finally{r=c,r===H&&ea()}});var Fk={Events:[Lb,Pa,ke,Cf,Ad,ob,function(a){Ud(a,bj)},Ff,Gf,yc,vc,Bb,{current:!1}]};(function(a){var b=a.findFiberByHostInstance;return Vj(N({},a,{overrideHookState:null,overrideProps:null,setSuspenseHandler:null,scheduleUpdate:null,currentDispatcherRef:ca.ReactCurrentDispatcher,findHostInstanceByFiber:function(a){a=eg(a);return null===a?null:a.stateNode},findFiberByHostInstance:function(a){return b?b(a):
+null},findHostInstancesForRefresh:null,scheduleRefresh:null,scheduleRoot:null,setRefreshHandler:null,getCurrentFiber:null}))})({findFiberByHostInstance:Fb,bundleType:0,version:"16.14.0",rendererPackageName:"react-dom"});I.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED=Fk;I.createPortal=oi;I.findDOMNode=function(a){if(null==a)return null;if(1===a.nodeType)return a;var b=a._reactInternalFiber;if(void 0===b){if("function"===typeof a.render)throw Error(l(188));throw Error(l(268,Object.keys(a)));
+}a=eg(b);a=null===a?null:a.stateNode;return a};I.flushSync=function(a,b){if((r&(ba|ka))!==H)throw Error(l(187));var c=r;r|=1;try{return Ca(99,a.bind(null,b))}finally{r=c,ea()}};I.hydrate=function(a,b,c){if(!hc(b))throw Error(l(200));return vd(null,a,b,!0,c)};I.render=function(a,b,c){if(!hc(b))throw Error(l(200));return vd(null,a,b,!1,c)};I.unmountComponentAtNode=function(a){if(!hc(a))throw Error(l(40));return a._reactRootContainer?(fi(function(){vd(null,null,a,!1,function(){a._reactRootContainer=
+null;a[Pb]=null})}),!0):!1};I.unstable_batchedUpdates=ei;I.unstable_createPortal=function(a,b){return oi(a,b,2<arguments.length&&void 0!==arguments[2]?arguments[2]:null)};I.unstable_renderSubtreeIntoContainer=function(a,b,c,d){if(!hc(c))throw Error(l(200));if(null==a||void 0===a._reactInternalFiber)throw Error(l(38));return vd(a,b,c,!1,d)};I.version="16.14.0"});
diff --git a/igv_component/node_modules/react-dom/unstable-fizz.browser.js b/igv_component/node_modules/react-dom/unstable-fizz.browser.js
new file mode 100644
index 0000000000000000000000000000000000000000..976fac7eca51c9f44e03396dacd8df0dfdab2e76
--- /dev/null
+++ b/igv_component/node_modules/react-dom/unstable-fizz.browser.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/react-dom-unstable-fizz.browser.production.min.js');
+} else {
+  module.exports = require('./cjs/react-dom-unstable-fizz.browser.development.js');
+}
diff --git a/igv_component/node_modules/react-dom/unstable-fizz.js b/igv_component/node_modules/react-dom/unstable-fizz.js
new file mode 100644
index 0000000000000000000000000000000000000000..ca4135d36b87cd1ade97dae2c9f4589c50903787
--- /dev/null
+++ b/igv_component/node_modules/react-dom/unstable-fizz.js
@@ -0,0 +1,3 @@
+'use strict';
+
+module.exports = require('./unstable-fizz.node');
diff --git a/igv_component/node_modules/react-dom/unstable-fizz.node.js b/igv_component/node_modules/react-dom/unstable-fizz.node.js
new file mode 100644
index 0000000000000000000000000000000000000000..038a3fd0fb495da01d0d5f43825d30b253c4f383
--- /dev/null
+++ b/igv_component/node_modules/react-dom/unstable-fizz.node.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/react-dom-unstable-fizz.node.production.min.js');
+} else {
+  module.exports = require('./cjs/react-dom-unstable-fizz.node.development.js');
+}
diff --git a/igv_component/node_modules/react-dom/unstable-native-dependencies.js b/igv_component/node_modules/react-dom/unstable-native-dependencies.js
new file mode 100644
index 0000000000000000000000000000000000000000..6a498a3686e6aeba298ff52bcfd9c8ba8d692f24
--- /dev/null
+++ b/igv_component/node_modules/react-dom/unstable-native-dependencies.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/react-dom-unstable-native-dependencies.production.min.js');
+} else {
+  module.exports = require('./cjs/react-dom-unstable-native-dependencies.development.js');
+}
diff --git a/igv_component/node_modules/react-is/LICENSE b/igv_component/node_modules/react-is/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..b96dcb0480a0b0be0727976e5202a1e7b23edc3f
--- /dev/null
+++ b/igv_component/node_modules/react-is/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) Facebook, Inc. and its affiliates.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/igv_component/node_modules/react-is/README.md b/igv_component/node_modules/react-is/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..d25597761817812537077127533a7bc6dbd0d3d8
--- /dev/null
+++ b/igv_component/node_modules/react-is/README.md
@@ -0,0 +1,104 @@
+# `react-is`
+
+This package allows you to test arbitrary values and see if they're a particular React element type.
+
+## Installation
+
+```sh
+# Yarn
+yarn add react-is
+
+# NPM
+npm install react-is
+```
+
+## Usage
+
+### Determining if a Component is Valid
+
+```js
+import React from "react";
+import * as ReactIs from "react-is";
+
+class ClassComponent extends React.Component {
+  render() {
+    return React.createElement("div");
+  }
+}
+
+const FunctionComponent = () => React.createElement("div");
+
+const ForwardRefComponent = React.forwardRef((props, ref) =>
+  React.createElement(Component, { forwardedRef: ref, ...props })
+);
+
+const Context = React.createContext(false);
+
+ReactIs.isValidElementType("div"); // true
+ReactIs.isValidElementType(ClassComponent); // true
+ReactIs.isValidElementType(FunctionComponent); // true
+ReactIs.isValidElementType(ForwardRefComponent); // true
+ReactIs.isValidElementType(Context.Provider); // true
+ReactIs.isValidElementType(Context.Consumer); // true
+ReactIs.isValidElementType(React.createFactory("div")); // true
+```
+
+### Determining an Element's Type
+
+#### Context
+
+```js
+import React from "react";
+import * as ReactIs from 'react-is';
+
+const ThemeContext = React.createContext("blue");
+
+ReactIs.isContextConsumer(<ThemeContext.Consumer />); // true
+ReactIs.isContextProvider(<ThemeContext.Provider />); // true
+ReactIs.typeOf(<ThemeContext.Provider />) === ReactIs.ContextProvider; // true
+ReactIs.typeOf(<ThemeContext.Consumer />) === ReactIs.ContextConsumer; // true
+```
+
+#### Element
+
+```js
+import React from "react";
+import * as ReactIs from 'react-is';
+
+ReactIs.isElement(<div />); // true
+ReactIs.typeOf(<div />) === ReactIs.Element; // true
+```
+
+#### Fragment
+
+```js
+import React from "react";
+import * as ReactIs from 'react-is';
+
+ReactIs.isFragment(<></>); // true
+ReactIs.typeOf(<></>) === ReactIs.Fragment; // true
+```
+
+#### Portal
+
+```js
+import React from "react";
+import ReactDOM from "react-dom";
+import * as ReactIs from 'react-is';
+
+const div = document.createElement("div");
+const portal = ReactDOM.createPortal(<div />, div);
+
+ReactIs.isPortal(portal); // true
+ReactIs.typeOf(portal) === ReactIs.Portal; // true
+```
+
+#### StrictMode
+
+```js
+import React from "react";
+import * as ReactIs from 'react-is';
+
+ReactIs.isStrictMode(<React.StrictMode />); // true
+ReactIs.typeOf(<React.StrictMode />) === ReactIs.StrictMode; // true
+```
diff --git a/igv_component/node_modules/react-is/build-info.json b/igv_component/node_modules/react-is/build-info.json
new file mode 100644
index 0000000000000000000000000000000000000000..4094da67d566d1c3d90b17a78d5ec8fc7dff8efe
--- /dev/null
+++ b/igv_component/node_modules/react-is/build-info.json
@@ -0,0 +1,8 @@
+{
+  "branch": "pull/18344",
+  "buildNumber": "106499",
+  "checksum": "7fe5a2e",
+  "commit": "da834083c",
+  "environment": "ci",
+  "reactVersion": "16.12.0-da834083c"
+}
diff --git a/igv_component/node_modules/react-is/cjs/react-is.development.js b/igv_component/node_modules/react-is/cjs/react-is.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..8a80b768ad6dcae1ed085e550dc82fb94727eccc
--- /dev/null
+++ b/igv_component/node_modules/react-is/cjs/react-is.development.js
@@ -0,0 +1,181 @@
+/** @license React v16.13.1
+ * react-is.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+// The Symbol used to tag the ReactElement-like types. If there is no native Symbol
+// nor polyfill, then a plain number is used for performance.
+var hasSymbol = typeof Symbol === 'function' && Symbol.for;
+var REACT_ELEMENT_TYPE = hasSymbol ? Symbol.for('react.element') : 0xeac7;
+var REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca;
+var REACT_FRAGMENT_TYPE = hasSymbol ? Symbol.for('react.fragment') : 0xeacb;
+var REACT_STRICT_MODE_TYPE = hasSymbol ? Symbol.for('react.strict_mode') : 0xeacc;
+var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for('react.profiler') : 0xead2;
+var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for('react.provider') : 0xeacd;
+var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for('react.context') : 0xeace; // TODO: We don't use AsyncMode or ConcurrentMode anymore. They were temporary
+// (unstable) APIs that have been removed. Can we remove the symbols?
+
+var REACT_ASYNC_MODE_TYPE = hasSymbol ? Symbol.for('react.async_mode') : 0xeacf;
+var REACT_CONCURRENT_MODE_TYPE = hasSymbol ? Symbol.for('react.concurrent_mode') : 0xeacf;
+var REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for('react.forward_ref') : 0xead0;
+var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for('react.suspense') : 0xead1;
+var REACT_SUSPENSE_LIST_TYPE = hasSymbol ? Symbol.for('react.suspense_list') : 0xead8;
+var REACT_MEMO_TYPE = hasSymbol ? Symbol.for('react.memo') : 0xead3;
+var REACT_LAZY_TYPE = hasSymbol ? Symbol.for('react.lazy') : 0xead4;
+var REACT_BLOCK_TYPE = hasSymbol ? Symbol.for('react.block') : 0xead9;
+var REACT_FUNDAMENTAL_TYPE = hasSymbol ? Symbol.for('react.fundamental') : 0xead5;
+var REACT_RESPONDER_TYPE = hasSymbol ? Symbol.for('react.responder') : 0xead6;
+var REACT_SCOPE_TYPE = hasSymbol ? Symbol.for('react.scope') : 0xead7;
+
+function isValidElementType(type) {
+  return typeof type === 'string' || typeof type === 'function' || // Note: its typeof might be other than 'symbol' or 'number' if it's a polyfill.
+  type === REACT_FRAGMENT_TYPE || type === REACT_CONCURRENT_MODE_TYPE || type === REACT_PROFILER_TYPE || type === REACT_STRICT_MODE_TYPE || type === REACT_SUSPENSE_TYPE || type === REACT_SUSPENSE_LIST_TYPE || typeof type === 'object' && type !== null && (type.$$typeof === REACT_LAZY_TYPE || type.$$typeof === REACT_MEMO_TYPE || type.$$typeof === REACT_PROVIDER_TYPE || type.$$typeof === REACT_CONTEXT_TYPE || type.$$typeof === REACT_FORWARD_REF_TYPE || type.$$typeof === REACT_FUNDAMENTAL_TYPE || type.$$typeof === REACT_RESPONDER_TYPE || type.$$typeof === REACT_SCOPE_TYPE || type.$$typeof === REACT_BLOCK_TYPE);
+}
+
+function typeOf(object) {
+  if (typeof object === 'object' && object !== null) {
+    var $$typeof = object.$$typeof;
+
+    switch ($$typeof) {
+      case REACT_ELEMENT_TYPE:
+        var type = object.type;
+
+        switch (type) {
+          case REACT_ASYNC_MODE_TYPE:
+          case REACT_CONCURRENT_MODE_TYPE:
+          case REACT_FRAGMENT_TYPE:
+          case REACT_PROFILER_TYPE:
+          case REACT_STRICT_MODE_TYPE:
+          case REACT_SUSPENSE_TYPE:
+            return type;
+
+          default:
+            var $$typeofType = type && type.$$typeof;
+
+            switch ($$typeofType) {
+              case REACT_CONTEXT_TYPE:
+              case REACT_FORWARD_REF_TYPE:
+              case REACT_LAZY_TYPE:
+              case REACT_MEMO_TYPE:
+              case REACT_PROVIDER_TYPE:
+                return $$typeofType;
+
+              default:
+                return $$typeof;
+            }
+
+        }
+
+      case REACT_PORTAL_TYPE:
+        return $$typeof;
+    }
+  }
+
+  return undefined;
+} // AsyncMode is deprecated along with isAsyncMode
+
+var AsyncMode = REACT_ASYNC_MODE_TYPE;
+var ConcurrentMode = REACT_CONCURRENT_MODE_TYPE;
+var ContextConsumer = REACT_CONTEXT_TYPE;
+var ContextProvider = REACT_PROVIDER_TYPE;
+var Element = REACT_ELEMENT_TYPE;
+var ForwardRef = REACT_FORWARD_REF_TYPE;
+var Fragment = REACT_FRAGMENT_TYPE;
+var Lazy = REACT_LAZY_TYPE;
+var Memo = REACT_MEMO_TYPE;
+var Portal = REACT_PORTAL_TYPE;
+var Profiler = REACT_PROFILER_TYPE;
+var StrictMode = REACT_STRICT_MODE_TYPE;
+var Suspense = REACT_SUSPENSE_TYPE;
+var hasWarnedAboutDeprecatedIsAsyncMode = false; // AsyncMode should be deprecated
+
+function isAsyncMode(object) {
+  {
+    if (!hasWarnedAboutDeprecatedIsAsyncMode) {
+      hasWarnedAboutDeprecatedIsAsyncMode = true; // Using console['warn'] to evade Babel and ESLint
+
+      console['warn']('The ReactIs.isAsyncMode() alias has been deprecated, ' + 'and will be removed in React 17+. Update your code to use ' + 'ReactIs.isConcurrentMode() instead. It has the exact same API.');
+    }
+  }
+
+  return isConcurrentMode(object) || typeOf(object) === REACT_ASYNC_MODE_TYPE;
+}
+function isConcurrentMode(object) {
+  return typeOf(object) === REACT_CONCURRENT_MODE_TYPE;
+}
+function isContextConsumer(object) {
+  return typeOf(object) === REACT_CONTEXT_TYPE;
+}
+function isContextProvider(object) {
+  return typeOf(object) === REACT_PROVIDER_TYPE;
+}
+function isElement(object) {
+  return typeof object === 'object' && object !== null && object.$$typeof === REACT_ELEMENT_TYPE;
+}
+function isForwardRef(object) {
+  return typeOf(object) === REACT_FORWARD_REF_TYPE;
+}
+function isFragment(object) {
+  return typeOf(object) === REACT_FRAGMENT_TYPE;
+}
+function isLazy(object) {
+  return typeOf(object) === REACT_LAZY_TYPE;
+}
+function isMemo(object) {
+  return typeOf(object) === REACT_MEMO_TYPE;
+}
+function isPortal(object) {
+  return typeOf(object) === REACT_PORTAL_TYPE;
+}
+function isProfiler(object) {
+  return typeOf(object) === REACT_PROFILER_TYPE;
+}
+function isStrictMode(object) {
+  return typeOf(object) === REACT_STRICT_MODE_TYPE;
+}
+function isSuspense(object) {
+  return typeOf(object) === REACT_SUSPENSE_TYPE;
+}
+
+exports.AsyncMode = AsyncMode;
+exports.ConcurrentMode = ConcurrentMode;
+exports.ContextConsumer = ContextConsumer;
+exports.ContextProvider = ContextProvider;
+exports.Element = Element;
+exports.ForwardRef = ForwardRef;
+exports.Fragment = Fragment;
+exports.Lazy = Lazy;
+exports.Memo = Memo;
+exports.Portal = Portal;
+exports.Profiler = Profiler;
+exports.StrictMode = StrictMode;
+exports.Suspense = Suspense;
+exports.isAsyncMode = isAsyncMode;
+exports.isConcurrentMode = isConcurrentMode;
+exports.isContextConsumer = isContextConsumer;
+exports.isContextProvider = isContextProvider;
+exports.isElement = isElement;
+exports.isForwardRef = isForwardRef;
+exports.isFragment = isFragment;
+exports.isLazy = isLazy;
+exports.isMemo = isMemo;
+exports.isPortal = isPortal;
+exports.isProfiler = isProfiler;
+exports.isStrictMode = isStrictMode;
+exports.isSuspense = isSuspense;
+exports.isValidElementType = isValidElementType;
+exports.typeOf = typeOf;
+  })();
+}
diff --git a/igv_component/node_modules/react-is/cjs/react-is.production.min.js b/igv_component/node_modules/react-is/cjs/react-is.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..3e83c7ab4916a7914b866a437d96d0352d8bfb88
--- /dev/null
+++ b/igv_component/node_modules/react-is/cjs/react-is.production.min.js
@@ -0,0 +1,15 @@
+/** @license React v16.13.1
+ * react-is.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';var b="function"===typeof Symbol&&Symbol.for,c=b?Symbol.for("react.element"):60103,d=b?Symbol.for("react.portal"):60106,e=b?Symbol.for("react.fragment"):60107,f=b?Symbol.for("react.strict_mode"):60108,g=b?Symbol.for("react.profiler"):60114,h=b?Symbol.for("react.provider"):60109,k=b?Symbol.for("react.context"):60110,l=b?Symbol.for("react.async_mode"):60111,m=b?Symbol.for("react.concurrent_mode"):60111,n=b?Symbol.for("react.forward_ref"):60112,p=b?Symbol.for("react.suspense"):60113,q=b?
+Symbol.for("react.suspense_list"):60120,r=b?Symbol.for("react.memo"):60115,t=b?Symbol.for("react.lazy"):60116,v=b?Symbol.for("react.block"):60121,w=b?Symbol.for("react.fundamental"):60117,x=b?Symbol.for("react.responder"):60118,y=b?Symbol.for("react.scope"):60119;
+function z(a){if("object"===typeof a&&null!==a){var u=a.$$typeof;switch(u){case c:switch(a=a.type,a){case l:case m:case e:case g:case f:case p:return a;default:switch(a=a&&a.$$typeof,a){case k:case n:case t:case r:case h:return a;default:return u}}case d:return u}}}function A(a){return z(a)===m}exports.AsyncMode=l;exports.ConcurrentMode=m;exports.ContextConsumer=k;exports.ContextProvider=h;exports.Element=c;exports.ForwardRef=n;exports.Fragment=e;exports.Lazy=t;exports.Memo=r;exports.Portal=d;
+exports.Profiler=g;exports.StrictMode=f;exports.Suspense=p;exports.isAsyncMode=function(a){return A(a)||z(a)===l};exports.isConcurrentMode=A;exports.isContextConsumer=function(a){return z(a)===k};exports.isContextProvider=function(a){return z(a)===h};exports.isElement=function(a){return"object"===typeof a&&null!==a&&a.$$typeof===c};exports.isForwardRef=function(a){return z(a)===n};exports.isFragment=function(a){return z(a)===e};exports.isLazy=function(a){return z(a)===t};
+exports.isMemo=function(a){return z(a)===r};exports.isPortal=function(a){return z(a)===d};exports.isProfiler=function(a){return z(a)===g};exports.isStrictMode=function(a){return z(a)===f};exports.isSuspense=function(a){return z(a)===p};
+exports.isValidElementType=function(a){return"string"===typeof a||"function"===typeof a||a===e||a===m||a===g||a===f||a===p||a===q||"object"===typeof a&&null!==a&&(a.$$typeof===t||a.$$typeof===r||a.$$typeof===h||a.$$typeof===k||a.$$typeof===n||a.$$typeof===w||a.$$typeof===x||a.$$typeof===y||a.$$typeof===v)};exports.typeOf=z;
diff --git a/igv_component/node_modules/react-is/index.js b/igv_component/node_modules/react-is/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..3ae098d078776a29e40a87a5f98edd1f697594ea
--- /dev/null
+++ b/igv_component/node_modules/react-is/index.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/react-is.production.min.js');
+} else {
+  module.exports = require('./cjs/react-is.development.js');
+}
diff --git a/igv_component/node_modules/react-is/package.json b/igv_component/node_modules/react-is/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..5f32de2e857a4df0c443df4096e44360b17235fd
--- /dev/null
+++ b/igv_component/node_modules/react-is/package.json
@@ -0,0 +1,27 @@
+{
+  "name": "react-is",
+  "version": "16.13.1",
+  "description": "Brand checking of React Elements.",
+  "main": "index.js",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/facebook/react.git",
+    "directory": "packages/react-is"
+  },
+  "keywords": [
+    "react"
+  ],
+  "license": "MIT",
+  "bugs": {
+    "url": "https://github.com/facebook/react/issues"
+  },
+  "homepage": "https://reactjs.org/",
+  "files": [
+    "LICENSE",
+    "README.md",
+    "build-info.json",
+    "index.js",
+    "cjs/",
+    "umd/"
+  ]
+}
diff --git a/igv_component/node_modules/react-is/umd/react-is.development.js b/igv_component/node_modules/react-is/umd/react-is.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..a6bc018a740ea4dfd6127b4dc57873ee54b2a355
--- /dev/null
+++ b/igv_component/node_modules/react-is/umd/react-is.development.js
@@ -0,0 +1,181 @@
+/** @license React v16.13.1
+ * react-is.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+  (global = global || self, factory(global.ReactIs = {}));
+}(this, (function (exports) { 'use strict';
+
+  // The Symbol used to tag the ReactElement-like types. If there is no native Symbol
+  // nor polyfill, then a plain number is used for performance.
+  var hasSymbol = typeof Symbol === 'function' && Symbol.for;
+  var REACT_ELEMENT_TYPE = hasSymbol ? Symbol.for('react.element') : 0xeac7;
+  var REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca;
+  var REACT_FRAGMENT_TYPE = hasSymbol ? Symbol.for('react.fragment') : 0xeacb;
+  var REACT_STRICT_MODE_TYPE = hasSymbol ? Symbol.for('react.strict_mode') : 0xeacc;
+  var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for('react.profiler') : 0xead2;
+  var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for('react.provider') : 0xeacd;
+  var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for('react.context') : 0xeace; // TODO: We don't use AsyncMode or ConcurrentMode anymore. They were temporary
+  // (unstable) APIs that have been removed. Can we remove the symbols?
+
+  var REACT_ASYNC_MODE_TYPE = hasSymbol ? Symbol.for('react.async_mode') : 0xeacf;
+  var REACT_CONCURRENT_MODE_TYPE = hasSymbol ? Symbol.for('react.concurrent_mode') : 0xeacf;
+  var REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for('react.forward_ref') : 0xead0;
+  var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for('react.suspense') : 0xead1;
+  var REACT_SUSPENSE_LIST_TYPE = hasSymbol ? Symbol.for('react.suspense_list') : 0xead8;
+  var REACT_MEMO_TYPE = hasSymbol ? Symbol.for('react.memo') : 0xead3;
+  var REACT_LAZY_TYPE = hasSymbol ? Symbol.for('react.lazy') : 0xead4;
+  var REACT_BLOCK_TYPE = hasSymbol ? Symbol.for('react.block') : 0xead9;
+  var REACT_FUNDAMENTAL_TYPE = hasSymbol ? Symbol.for('react.fundamental') : 0xead5;
+  var REACT_RESPONDER_TYPE = hasSymbol ? Symbol.for('react.responder') : 0xead6;
+  var REACT_SCOPE_TYPE = hasSymbol ? Symbol.for('react.scope') : 0xead7;
+
+  function isValidElementType(type) {
+    return typeof type === 'string' || typeof type === 'function' || // Note: its typeof might be other than 'symbol' or 'number' if it's a polyfill.
+    type === REACT_FRAGMENT_TYPE || type === REACT_CONCURRENT_MODE_TYPE || type === REACT_PROFILER_TYPE || type === REACT_STRICT_MODE_TYPE || type === REACT_SUSPENSE_TYPE || type === REACT_SUSPENSE_LIST_TYPE || typeof type === 'object' && type !== null && (type.$$typeof === REACT_LAZY_TYPE || type.$$typeof === REACT_MEMO_TYPE || type.$$typeof === REACT_PROVIDER_TYPE || type.$$typeof === REACT_CONTEXT_TYPE || type.$$typeof === REACT_FORWARD_REF_TYPE || type.$$typeof === REACT_FUNDAMENTAL_TYPE || type.$$typeof === REACT_RESPONDER_TYPE || type.$$typeof === REACT_SCOPE_TYPE || type.$$typeof === REACT_BLOCK_TYPE);
+  }
+
+  function typeOf(object) {
+    if (typeof object === 'object' && object !== null) {
+      var $$typeof = object.$$typeof;
+
+      switch ($$typeof) {
+        case REACT_ELEMENT_TYPE:
+          var type = object.type;
+
+          switch (type) {
+            case REACT_ASYNC_MODE_TYPE:
+            case REACT_CONCURRENT_MODE_TYPE:
+            case REACT_FRAGMENT_TYPE:
+            case REACT_PROFILER_TYPE:
+            case REACT_STRICT_MODE_TYPE:
+            case REACT_SUSPENSE_TYPE:
+              return type;
+
+            default:
+              var $$typeofType = type && type.$$typeof;
+
+              switch ($$typeofType) {
+                case REACT_CONTEXT_TYPE:
+                case REACT_FORWARD_REF_TYPE:
+                case REACT_LAZY_TYPE:
+                case REACT_MEMO_TYPE:
+                case REACT_PROVIDER_TYPE:
+                  return $$typeofType;
+
+                default:
+                  return $$typeof;
+              }
+
+          }
+
+        case REACT_PORTAL_TYPE:
+          return $$typeof;
+      }
+    }
+
+    return undefined;
+  } // AsyncMode is deprecated along with isAsyncMode
+
+  var AsyncMode = REACT_ASYNC_MODE_TYPE;
+  var ConcurrentMode = REACT_CONCURRENT_MODE_TYPE;
+  var ContextConsumer = REACT_CONTEXT_TYPE;
+  var ContextProvider = REACT_PROVIDER_TYPE;
+  var Element = REACT_ELEMENT_TYPE;
+  var ForwardRef = REACT_FORWARD_REF_TYPE;
+  var Fragment = REACT_FRAGMENT_TYPE;
+  var Lazy = REACT_LAZY_TYPE;
+  var Memo = REACT_MEMO_TYPE;
+  var Portal = REACT_PORTAL_TYPE;
+  var Profiler = REACT_PROFILER_TYPE;
+  var StrictMode = REACT_STRICT_MODE_TYPE;
+  var Suspense = REACT_SUSPENSE_TYPE;
+  var hasWarnedAboutDeprecatedIsAsyncMode = false; // AsyncMode should be deprecated
+
+  function isAsyncMode(object) {
+    {
+      if (!hasWarnedAboutDeprecatedIsAsyncMode) {
+        hasWarnedAboutDeprecatedIsAsyncMode = true; // Using console['warn'] to evade Babel and ESLint
+
+        console['warn']('The ReactIs.isAsyncMode() alias has been deprecated, ' + 'and will be removed in React 17+. Update your code to use ' + 'ReactIs.isConcurrentMode() instead. It has the exact same API.');
+      }
+    }
+
+    return isConcurrentMode(object) || typeOf(object) === REACT_ASYNC_MODE_TYPE;
+  }
+  function isConcurrentMode(object) {
+    return typeOf(object) === REACT_CONCURRENT_MODE_TYPE;
+  }
+  function isContextConsumer(object) {
+    return typeOf(object) === REACT_CONTEXT_TYPE;
+  }
+  function isContextProvider(object) {
+    return typeOf(object) === REACT_PROVIDER_TYPE;
+  }
+  function isElement(object) {
+    return typeof object === 'object' && object !== null && object.$$typeof === REACT_ELEMENT_TYPE;
+  }
+  function isForwardRef(object) {
+    return typeOf(object) === REACT_FORWARD_REF_TYPE;
+  }
+  function isFragment(object) {
+    return typeOf(object) === REACT_FRAGMENT_TYPE;
+  }
+  function isLazy(object) {
+    return typeOf(object) === REACT_LAZY_TYPE;
+  }
+  function isMemo(object) {
+    return typeOf(object) === REACT_MEMO_TYPE;
+  }
+  function isPortal(object) {
+    return typeOf(object) === REACT_PORTAL_TYPE;
+  }
+  function isProfiler(object) {
+    return typeOf(object) === REACT_PROFILER_TYPE;
+  }
+  function isStrictMode(object) {
+    return typeOf(object) === REACT_STRICT_MODE_TYPE;
+  }
+  function isSuspense(object) {
+    return typeOf(object) === REACT_SUSPENSE_TYPE;
+  }
+
+  exports.AsyncMode = AsyncMode;
+  exports.ConcurrentMode = ConcurrentMode;
+  exports.ContextConsumer = ContextConsumer;
+  exports.ContextProvider = ContextProvider;
+  exports.Element = Element;
+  exports.ForwardRef = ForwardRef;
+  exports.Fragment = Fragment;
+  exports.Lazy = Lazy;
+  exports.Memo = Memo;
+  exports.Portal = Portal;
+  exports.Profiler = Profiler;
+  exports.StrictMode = StrictMode;
+  exports.Suspense = Suspense;
+  exports.isAsyncMode = isAsyncMode;
+  exports.isConcurrentMode = isConcurrentMode;
+  exports.isContextConsumer = isContextConsumer;
+  exports.isContextProvider = isContextProvider;
+  exports.isElement = isElement;
+  exports.isForwardRef = isForwardRef;
+  exports.isFragment = isFragment;
+  exports.isLazy = isLazy;
+  exports.isMemo = isMemo;
+  exports.isPortal = isPortal;
+  exports.isProfiler = isProfiler;
+  exports.isStrictMode = isStrictMode;
+  exports.isSuspense = isSuspense;
+  exports.isValidElementType = isValidElementType;
+  exports.typeOf = typeOf;
+
+})));
diff --git a/igv_component/node_modules/react-is/umd/react-is.production.min.js b/igv_component/node_modules/react-is/umd/react-is.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..62fe6b226e12631d571d071bd0b7a8b6c3170549
--- /dev/null
+++ b/igv_component/node_modules/react-is/umd/react-is.production.min.js
@@ -0,0 +1,13 @@
+/** @license React v16.13.1
+ * react-is.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';(function(b,d){"object"===typeof exports&&"undefined"!==typeof module?d(exports):"function"===typeof define&&define.amd?define(["exports"],d):(b=b||self,d(b.ReactIs={}))})(this,function(b){function d(a){if("object"===typeof a&&null!==a){var b=a.$$typeof;switch(b){case r:switch(a=a.type,a){case t:case e:case f:case g:case h:case k:return a;default:switch(a=a&&a.$$typeof,a){case l:case m:case n:case p:case q:return a;default:return b}}case u:return b}}}function v(a){return d(a)===e}var c=
+"function"===typeof Symbol&&Symbol.for,r=c?Symbol.for("react.element"):60103,u=c?Symbol.for("react.portal"):60106,f=c?Symbol.for("react.fragment"):60107,h=c?Symbol.for("react.strict_mode"):60108,g=c?Symbol.for("react.profiler"):60114,q=c?Symbol.for("react.provider"):60109,l=c?Symbol.for("react.context"):60110,t=c?Symbol.for("react.async_mode"):60111,e=c?Symbol.for("react.concurrent_mode"):60111,m=c?Symbol.for("react.forward_ref"):60112,k=c?Symbol.for("react.suspense"):60113,w=c?Symbol.for("react.suspense_list"):
+60120,p=c?Symbol.for("react.memo"):60115,n=c?Symbol.for("react.lazy"):60116,x=c?Symbol.for("react.block"):60121,y=c?Symbol.for("react.fundamental"):60117,z=c?Symbol.for("react.responder"):60118,A=c?Symbol.for("react.scope"):60119;b.AsyncMode=t;b.ConcurrentMode=e;b.ContextConsumer=l;b.ContextProvider=q;b.Element=r;b.ForwardRef=m;b.Fragment=f;b.Lazy=n;b.Memo=p;b.Portal=u;b.Profiler=g;b.StrictMode=h;b.Suspense=k;b.isAsyncMode=function(a){return v(a)||d(a)===t};b.isConcurrentMode=v;b.isContextConsumer=
+function(a){return d(a)===l};b.isContextProvider=function(a){return d(a)===q};b.isElement=function(a){return"object"===typeof a&&null!==a&&a.$$typeof===r};b.isForwardRef=function(a){return d(a)===m};b.isFragment=function(a){return d(a)===f};b.isLazy=function(a){return d(a)===n};b.isMemo=function(a){return d(a)===p};b.isPortal=function(a){return d(a)===u};b.isProfiler=function(a){return d(a)===g};b.isStrictMode=function(a){return d(a)===h};b.isSuspense=function(a){return d(a)===k};b.isValidElementType=
+function(a){return"string"===typeof a||"function"===typeof a||a===f||a===e||a===g||a===h||a===k||a===w||"object"===typeof a&&null!==a&&(a.$$typeof===n||a.$$typeof===p||a.$$typeof===q||a.$$typeof===l||a.$$typeof===m||a.$$typeof===y||a.$$typeof===z||a.$$typeof===A||a.$$typeof===x)};b.typeOf=d});
diff --git a/igv_component/node_modules/react/LICENSE b/igv_component/node_modules/react/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..b96dcb0480a0b0be0727976e5202a1e7b23edc3f
--- /dev/null
+++ b/igv_component/node_modules/react/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) Facebook, Inc. and its affiliates.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/igv_component/node_modules/react/README.md b/igv_component/node_modules/react/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..0033e23bd8873ca5e9ea736b6aa659608e5681ae
--- /dev/null
+++ b/igv_component/node_modules/react/README.md
@@ -0,0 +1,13 @@
+# `react`
+
+React is a JavaScript library for creating user interfaces.
+
+The `react` package contains only the functionality necessary to define React components. It is typically used together with a React renderer like `react-dom` for the web, or `react-native` for the native environments.
+
+**Note:** by default, React will be in development mode. The development version includes extra warnings about common mistakes, whereas the production version includes extra performance optimizations and strips all error messages. Don't forget to use the [production build](https://reactjs.org/docs/optimizing-performance.html#use-the-production-build) when deploying your application.
+
+## Example Usage
+
+```js
+var React = require('react');
+```
diff --git a/igv_component/node_modules/react/build-info.json b/igv_component/node_modules/react/build-info.json
new file mode 100644
index 0000000000000000000000000000000000000000..4094da67d566d1c3d90b17a78d5ec8fc7dff8efe
--- /dev/null
+++ b/igv_component/node_modules/react/build-info.json
@@ -0,0 +1,8 @@
+{
+  "branch": "pull/18344",
+  "buildNumber": "106499",
+  "checksum": "7fe5a2e",
+  "commit": "da834083c",
+  "environment": "ci",
+  "reactVersion": "16.12.0-da834083c"
+}
diff --git a/igv_component/node_modules/react/cjs/.DS_Store b/igv_component/node_modules/react/cjs/.DS_Store
new file mode 100644
index 0000000000000000000000000000000000000000..5008ddfcf53c02e82d7eee2e57c38e5672ef89f6
Binary files /dev/null and b/igv_component/node_modules/react/cjs/.DS_Store differ
diff --git a/igv_component/node_modules/react/cjs/react-jsx-dev-runtime.development.js b/igv_component/node_modules/react/cjs/react-jsx-dev-runtime.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..880e9b652f0ba6c7505e0fd7f630ce8257fcbb19
--- /dev/null
+++ b/igv_component/node_modules/react/cjs/react-jsx-dev-runtime.development.js
@@ -0,0 +1,889 @@
+/** @license React v16.14.0
+ * react-jsx-dev-runtime.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+var React = require('react');
+
+// ATTENTION
+// When adding new symbols to this file,
+// Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols'
+// The Symbol used to tag the ReactElement-like types. If there is no native Symbol
+// nor polyfill, then a plain number is used for performance.
+var REACT_ELEMENT_TYPE = 0xeac7;
+var REACT_PORTAL_TYPE = 0xeaca;
+exports.Fragment = 0xeacb;
+var REACT_STRICT_MODE_TYPE = 0xeacc;
+var REACT_PROFILER_TYPE = 0xead2;
+var REACT_PROVIDER_TYPE = 0xeacd;
+var REACT_CONTEXT_TYPE = 0xeace;
+var REACT_FORWARD_REF_TYPE = 0xead0;
+var REACT_SUSPENSE_TYPE = 0xead1;
+var REACT_SUSPENSE_LIST_TYPE = 0xead8;
+var REACT_MEMO_TYPE = 0xead3;
+var REACT_LAZY_TYPE = 0xead4;
+var REACT_BLOCK_TYPE = 0xead9;
+var REACT_SERVER_BLOCK_TYPE = 0xeada;
+var REACT_FUNDAMENTAL_TYPE = 0xead5;
+var REACT_SCOPE_TYPE = 0xead7;
+var REACT_OPAQUE_ID_TYPE = 0xeae0;
+var REACT_DEBUG_TRACING_MODE_TYPE = 0xeae1;
+var REACT_OFFSCREEN_TYPE = 0xeae2;
+var REACT_LEGACY_HIDDEN_TYPE = 0xeae3;
+
+if (typeof Symbol === 'function' && Symbol.for) {
+  var symbolFor = Symbol.for;
+  REACT_ELEMENT_TYPE = symbolFor('react.element');
+  REACT_PORTAL_TYPE = symbolFor('react.portal');
+  exports.Fragment = symbolFor('react.fragment');
+  REACT_STRICT_MODE_TYPE = symbolFor('react.strict_mode');
+  REACT_PROFILER_TYPE = symbolFor('react.profiler');
+  REACT_PROVIDER_TYPE = symbolFor('react.provider');
+  REACT_CONTEXT_TYPE = symbolFor('react.context');
+  REACT_FORWARD_REF_TYPE = symbolFor('react.forward_ref');
+  REACT_SUSPENSE_TYPE = symbolFor('react.suspense');
+  REACT_SUSPENSE_LIST_TYPE = symbolFor('react.suspense_list');
+  REACT_MEMO_TYPE = symbolFor('react.memo');
+  REACT_LAZY_TYPE = symbolFor('react.lazy');
+  REACT_BLOCK_TYPE = symbolFor('react.block');
+  REACT_SERVER_BLOCK_TYPE = symbolFor('react.server.block');
+  REACT_FUNDAMENTAL_TYPE = symbolFor('react.fundamental');
+  REACT_SCOPE_TYPE = symbolFor('react.scope');
+  REACT_OPAQUE_ID_TYPE = symbolFor('react.opaque.id');
+  REACT_DEBUG_TRACING_MODE_TYPE = symbolFor('react.debug_trace_mode');
+  REACT_OFFSCREEN_TYPE = symbolFor('react.offscreen');
+  REACT_LEGACY_HIDDEN_TYPE = symbolFor('react.legacy_hidden');
+}
+
+var MAYBE_ITERATOR_SYMBOL = typeof Symbol === 'function' && Symbol.iterator;
+var FAUX_ITERATOR_SYMBOL = '@@iterator';
+function getIteratorFn(maybeIterable) {
+  if (maybeIterable === null || typeof maybeIterable !== 'object') {
+    return null;
+  }
+
+  var maybeIterator = MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL];
+
+  if (typeof maybeIterator === 'function') {
+    return maybeIterator;
+  }
+
+  return null;
+}
+
+var ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;
+
+function error(format) {
+  {
+    for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+      args[_key2 - 1] = arguments[_key2];
+    }
+
+    printWarning('error', format, args);
+  }
+}
+
+function printWarning(level, format, args) {
+  // When changing this logic, you might want to also
+  // update consoleWithStackDev.www.js as well.
+  {
+    var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+    var stack = '';
+
+    if (currentlyValidatingElement) {
+      var name = getComponentName(currentlyValidatingElement.type);
+      var owner = currentlyValidatingElement._owner;
+      stack += describeComponentFrame(name, currentlyValidatingElement._source, owner && getComponentName(owner.type));
+    }
+
+    stack += ReactDebugCurrentFrame.getStackAddendum();
+
+
+    if (stack !== '') {
+      format += '%s';
+      args = args.concat([stack]);
+    }
+
+    var argsWithFormat = args.map(function (item) {
+      return '' + item;
+    }); // Careful: RN currently depends on this prefix
+
+    argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it
+    // breaks IE9: https://github.com/facebook/react/issues/13610
+    // eslint-disable-next-line react-internal/no-production-logging
+
+    Function.prototype.apply.call(console[level], console, argsWithFormat);
+  }
+}
+
+// Filter certain DOM attributes (e.g. src, href) if their values are empty strings.
+
+var enableScopeAPI = false; // Experimental Create Event Handle API.
+
+function isValidElementType(type) {
+  if (typeof type === 'string' || typeof type === 'function') {
+    return true;
+  } // Note: typeof might be other than 'symbol' or 'number' (e.g. if it's a polyfill).
+
+
+  if (type === exports.Fragment || type === REACT_PROFILER_TYPE || type === REACT_DEBUG_TRACING_MODE_TYPE || type === REACT_STRICT_MODE_TYPE || type === REACT_SUSPENSE_TYPE || type === REACT_SUSPENSE_LIST_TYPE || type === REACT_LEGACY_HIDDEN_TYPE || enableScopeAPI ) {
+    return true;
+  }
+
+  if (typeof type === 'object' && type !== null) {
+    if (type.$$typeof === REACT_LAZY_TYPE || type.$$typeof === REACT_MEMO_TYPE || type.$$typeof === REACT_PROVIDER_TYPE || type.$$typeof === REACT_CONTEXT_TYPE || type.$$typeof === REACT_FORWARD_REF_TYPE || type.$$typeof === REACT_FUNDAMENTAL_TYPE || type.$$typeof === REACT_BLOCK_TYPE || type[0] === REACT_SERVER_BLOCK_TYPE) {
+      return true;
+    }
+  }
+
+  return false;
+}
+var BEFORE_SLASH_RE = /^(.*)[\\\/]/;
+function describeComponentFrame (name, source, ownerName) {
+  var sourceInfo = '';
+
+  if (source) {
+    var path = source.fileName;
+    var fileName = path.replace(BEFORE_SLASH_RE, '');
+
+    {
+      // In DEV, include code for a common special case:
+      // prefer "folder/index.js" instead of just "index.js".
+      if (/^index\./.test(fileName)) {
+        var match = path.match(BEFORE_SLASH_RE);
+
+        if (match) {
+          var pathBeforeSlash = match[1];
+
+          if (pathBeforeSlash) {
+            var folderName = pathBeforeSlash.replace(BEFORE_SLASH_RE, '');
+            fileName = folderName + '/' + fileName;
+          }
+        }
+      }
+    }
+
+    sourceInfo = ' (at ' + fileName + ':' + source.lineNumber + ')';
+  } else if (ownerName) {
+    sourceInfo = ' (created by ' + ownerName + ')';
+  }
+
+  return '\n    in ' + (name || 'Unknown') + sourceInfo;
+}
+
+var Resolved = 1;
+function refineResolvedLazyComponent(lazyComponent) {
+  return lazyComponent._status === Resolved ? lazyComponent._result : null;
+}
+
+function getWrappedName(outerType, innerType, wrapperName) {
+  var functionName = innerType.displayName || innerType.name || '';
+  return outerType.displayName || (functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName);
+}
+
+function getComponentName(type) {
+  if (type == null) {
+    // Host root, text node or just invalid type.
+    return null;
+  }
+
+  {
+    if (typeof type.tag === 'number') {
+      error('Received an unexpected object in getComponentName(). ' + 'This is likely a bug in React. Please file an issue.');
+    }
+  }
+
+  if (typeof type === 'function') {
+    return type.displayName || type.name || null;
+  }
+
+  if (typeof type === 'string') {
+    return type;
+  }
+
+  switch (type) {
+    case exports.Fragment:
+      return 'Fragment';
+
+    case REACT_PORTAL_TYPE:
+      return 'Portal';
+
+    case REACT_PROFILER_TYPE:
+      return "Profiler";
+
+    case REACT_STRICT_MODE_TYPE:
+      return 'StrictMode';
+
+    case REACT_SUSPENSE_TYPE:
+      return 'Suspense';
+
+    case REACT_SUSPENSE_LIST_TYPE:
+      return 'SuspenseList';
+  }
+
+  if (typeof type === 'object') {
+    switch (type.$$typeof) {
+      case REACT_CONTEXT_TYPE:
+        return 'Context.Consumer';
+
+      case REACT_PROVIDER_TYPE:
+        return 'Context.Provider';
+
+      case REACT_FORWARD_REF_TYPE:
+        return getWrappedName(type, type.render, 'ForwardRef');
+
+      case REACT_MEMO_TYPE:
+        return getComponentName(type.type);
+
+      case REACT_BLOCK_TYPE:
+        return getComponentName(type.render);
+
+      case REACT_LAZY_TYPE:
+        {
+          var thenable = type;
+          var resolvedThenable = refineResolvedLazyComponent(thenable);
+
+          if (resolvedThenable) {
+            return getComponentName(resolvedThenable);
+          }
+
+          break;
+        }
+    }
+  }
+
+  return null;
+}
+var loggedTypeFailures = {};
+var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+var currentlyValidatingElement = null;
+
+function setCurrentlyValidatingElement(element) {
+  currentlyValidatingElement = element;
+}
+
+function checkPropTypes(typeSpecs, values, location, componentName, element) {
+  {
+    // $FlowFixMe This is okay but Flow doesn't know it.
+    var has = Function.call.bind(Object.prototype.hasOwnProperty);
+
+    for (var typeSpecName in typeSpecs) {
+      if (has(typeSpecs, typeSpecName)) {
+        var error$1 = void 0; // Prop type validation may throw. In case they do, we don't want to
+        // fail the render phase where it didn't fail before. So we log it.
+        // After these have been cleaned up, we'll let them throw.
+
+        try {
+          // This is intentionally an invariant that gets caught. It's the same
+          // behavior as without this statement except with a better message.
+          if (typeof typeSpecs[typeSpecName] !== 'function') {
+            var err = Error((componentName || 'React class') + ': ' + location + ' type `' + typeSpecName + '` is invalid; ' + 'it must be a function, usually from the `prop-types` package, but received `' + typeof typeSpecs[typeSpecName] + '`.' + 'This often happens because of typos such as `PropTypes.function` instead of `PropTypes.func`.');
+            err.name = 'Invariant Violation';
+            throw err;
+          }
+
+          error$1 = typeSpecs[typeSpecName](values, typeSpecName, componentName, location, null, 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED');
+        } catch (ex) {
+          error$1 = ex;
+        }
+
+        if (error$1 && !(error$1 instanceof Error)) {
+          setCurrentlyValidatingElement(element);
+
+          error('%s: type specification of %s' + ' `%s` is invalid; the type checker ' + 'function must return `null` or an `Error` but returned a %s. ' + 'You may have forgotten to pass an argument to the type checker ' + 'creator (arrayOf, instanceOf, objectOf, oneOf, oneOfType, and ' + 'shape all require an argument).', componentName || 'React class', location, typeSpecName, typeof error$1);
+
+          setCurrentlyValidatingElement(null);
+        }
+
+        if (error$1 instanceof Error && !(error$1.message in loggedTypeFailures)) {
+          // Only monitor this failure once because there tends to be a lot of the
+          // same error.
+          loggedTypeFailures[error$1.message] = true;
+          setCurrentlyValidatingElement(element);
+
+          error('Failed %s type: %s', location, error$1.message);
+
+          setCurrentlyValidatingElement(null);
+        }
+      }
+    }
+  }
+}
+
+var ReactCurrentOwner = ReactSharedInternals.ReactCurrentOwner;
+var hasOwnProperty = Object.prototype.hasOwnProperty;
+var RESERVED_PROPS = {
+  key: true,
+  ref: true,
+  __self: true,
+  __source: true
+};
+var specialPropKeyWarningShown;
+var specialPropRefWarningShown;
+var didWarnAboutStringRefs;
+
+{
+  didWarnAboutStringRefs = {};
+}
+
+function hasValidRef(config) {
+  {
+    if (hasOwnProperty.call(config, 'ref')) {
+      var getter = Object.getOwnPropertyDescriptor(config, 'ref').get;
+
+      if (getter && getter.isReactWarning) {
+        return false;
+      }
+    }
+  }
+
+  return config.ref !== undefined;
+}
+
+function hasValidKey(config) {
+  {
+    if (hasOwnProperty.call(config, 'key')) {
+      var getter = Object.getOwnPropertyDescriptor(config, 'key').get;
+
+      if (getter && getter.isReactWarning) {
+        return false;
+      }
+    }
+  }
+
+  return config.key !== undefined;
+}
+
+function warnIfStringRefCannotBeAutoConverted(config, self) {
+  {
+    if (typeof config.ref === 'string' && ReactCurrentOwner.current && self && ReactCurrentOwner.current.stateNode !== self) {
+      var componentName = getComponentName(ReactCurrentOwner.current.type);
+
+      if (!didWarnAboutStringRefs[componentName]) {
+        error('Component "%s" contains the string ref "%s". ' + 'Support for string refs will be removed in a future major release. ' + 'This case cannot be automatically converted to an arrow function. ' + 'We ask you to manually fix this case by using useRef() or createRef() instead. ' + 'Learn more about using refs safely here: ' + 'https://reactjs.org/link/strict-mode-string-ref', getComponentName(ReactCurrentOwner.current.type), config.ref);
+
+        didWarnAboutStringRefs[componentName] = true;
+      }
+    }
+  }
+}
+
+function defineKeyPropWarningGetter(props, displayName) {
+  {
+    var warnAboutAccessingKey = function () {
+      if (!specialPropKeyWarningShown) {
+        specialPropKeyWarningShown = true;
+
+        error('%s: `key` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https://reactjs.org/link/special-props)', displayName);
+      }
+    };
+
+    warnAboutAccessingKey.isReactWarning = true;
+    Object.defineProperty(props, 'key', {
+      get: warnAboutAccessingKey,
+      configurable: true
+    });
+  }
+}
+
+function defineRefPropWarningGetter(props, displayName) {
+  {
+    var warnAboutAccessingRef = function () {
+      if (!specialPropRefWarningShown) {
+        specialPropRefWarningShown = true;
+
+        error('%s: `ref` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https://reactjs.org/link/special-props)', displayName);
+      }
+    };
+
+    warnAboutAccessingRef.isReactWarning = true;
+    Object.defineProperty(props, 'ref', {
+      get: warnAboutAccessingRef,
+      configurable: true
+    });
+  }
+}
+/**
+ * Factory method to create a new React element. This no longer adheres to
+ * the class pattern, so do not use new to call it. Also, instanceof check
+ * will not work. Instead test $$typeof field against Symbol.for('react.element') to check
+ * if something is a React Element.
+ *
+ * @param {*} type
+ * @param {*} props
+ * @param {*} key
+ * @param {string|object} ref
+ * @param {*} owner
+ * @param {*} self A *temporary* helper to detect places where `this` is
+ * different from the `owner` when React.createElement is called, so that we
+ * can warn. We want to get rid of owner and replace string `ref`s with arrow
+ * functions, and as long as `this` and owner are the same, there will be no
+ * change in behavior.
+ * @param {*} source An annotation object (added by a transpiler or otherwise)
+ * indicating filename, line number, and/or other information.
+ * @internal
+ */
+
+
+var ReactElement = function (type, key, ref, self, source, owner, props) {
+  var element = {
+    // This tag allows us to uniquely identify this as a React Element
+    $$typeof: REACT_ELEMENT_TYPE,
+    // Built-in properties that belong on the element
+    type: type,
+    key: key,
+    ref: ref,
+    props: props,
+    // Record the component responsible for creating this element.
+    _owner: owner
+  };
+
+  {
+    // The validation flag is currently mutative. We put it on
+    // an external backing store so that we can freeze the whole object.
+    // This can be replaced with a WeakMap once they are implemented in
+    // commonly used development environments.
+    element._store = {}; // To make comparing ReactElements easier for testing purposes, we make
+    // the validation flag non-enumerable (where possible, which should
+    // include every environment we run tests in), so the test framework
+    // ignores it.
+
+    Object.defineProperty(element._store, 'validated', {
+      configurable: false,
+      enumerable: false,
+      writable: true,
+      value: false
+    }); // self and source are DEV only properties.
+
+    Object.defineProperty(element, '_self', {
+      configurable: false,
+      enumerable: false,
+      writable: false,
+      value: self
+    }); // Two elements created in two different places should be considered
+    // equal for testing purposes and therefore we hide it from enumeration.
+
+    Object.defineProperty(element, '_source', {
+      configurable: false,
+      enumerable: false,
+      writable: false,
+      value: source
+    });
+
+    if (Object.freeze) {
+      Object.freeze(element.props);
+      Object.freeze(element);
+    }
+  }
+
+  return element;
+};
+/**
+ * https://github.com/reactjs/rfcs/pull/107
+ * @param {*} type
+ * @param {object} props
+ * @param {string} key
+ */
+
+function jsxDEV(type, config, maybeKey, source, self) {
+  {
+    var propName; // Reserved names are extracted
+
+    var props = {};
+    var key = null;
+    var ref = null; // Currently, key can be spread in as a prop. This causes a potential
+    // issue if key is also explicitly declared (ie. <div {...props} key="Hi" />
+    // or <div key="Hi" {...props} /> ). We want to deprecate key spread,
+    // but as an intermediary step, we will use jsxDEV for everything except
+    // <div {...props} key="Hi" />, because we aren't currently able to tell if
+    // key is explicitly declared to be undefined or not.
+
+    if (maybeKey !== undefined) {
+      key = '' + maybeKey;
+    }
+
+    if (hasValidKey(config)) {
+      key = '' + config.key;
+    }
+
+    if (hasValidRef(config)) {
+      ref = config.ref;
+      warnIfStringRefCannotBeAutoConverted(config, self);
+    } // Remaining properties are added to a new props object
+
+
+    for (propName in config) {
+      if (hasOwnProperty.call(config, propName) && !RESERVED_PROPS.hasOwnProperty(propName)) {
+        props[propName] = config[propName];
+      }
+    } // Resolve default props
+
+
+    if (type && type.defaultProps) {
+      var defaultProps = type.defaultProps;
+
+      for (propName in defaultProps) {
+        if (props[propName] === undefined) {
+          props[propName] = defaultProps[propName];
+        }
+      }
+    }
+
+    if (key || ref) {
+      var displayName = typeof type === 'function' ? type.displayName || type.name || 'Unknown' : type;
+
+      if (key) {
+        defineKeyPropWarningGetter(props, displayName);
+      }
+
+      if (ref) {
+        defineRefPropWarningGetter(props, displayName);
+      }
+    }
+
+    return ReactElement(type, key, ref, self, source, ReactCurrentOwner.current, props);
+  }
+}
+
+var ReactCurrentOwner$1 = ReactSharedInternals.ReactCurrentOwner;
+var ReactDebugCurrentFrame$1 = ReactSharedInternals.ReactDebugCurrentFrame;
+
+function setCurrentlyValidatingElement$1(element) {
+  currentlyValidatingElement = element;
+}
+
+var propTypesMisspellWarningShown;
+
+{
+  propTypesMisspellWarningShown = false;
+}
+/**
+ * Verifies the object is a ReactElement.
+ * See https://reactjs.org/docs/react-api.html#isvalidelement
+ * @param {?object} object
+ * @return {boolean} True if `object` is a ReactElement.
+ * @final
+ */
+
+function isValidElement(object) {
+  {
+    return typeof object === 'object' && object !== null && object.$$typeof === REACT_ELEMENT_TYPE;
+  }
+}
+
+function getDeclarationErrorAddendum() {
+  {
+    if (ReactCurrentOwner$1.current) {
+      var name = getComponentName(ReactCurrentOwner$1.current.type);
+
+      if (name) {
+        return '\n\nCheck the render method of `' + name + '`.';
+      }
+    }
+
+    return '';
+  }
+}
+
+function getSourceInfoErrorAddendum(source) {
+  {
+    if (source !== undefined) {
+      var fileName = source.fileName.replace(/^.*[\\\/]/, '');
+      var lineNumber = source.lineNumber;
+      return '\n\nCheck your code at ' + fileName + ':' + lineNumber + '.';
+    }
+
+    return '';
+  }
+}
+/**
+ * Warn if there's no key explicitly set on dynamic arrays of children or
+ * object keys are not valid. This allows us to keep track of children between
+ * updates.
+ */
+
+
+var ownerHasKeyUseWarning = {};
+
+function getCurrentComponentErrorInfo(parentType) {
+  {
+    var info = getDeclarationErrorAddendum();
+
+    if (!info) {
+      var parentName = typeof parentType === 'string' ? parentType : parentType.displayName || parentType.name;
+
+      if (parentName) {
+        info = "\n\nCheck the top-level render call using <" + parentName + ">.";
+      }
+    }
+
+    return info;
+  }
+}
+/**
+ * Warn if the element doesn't have an explicit key assigned to it.
+ * This element is in an array. The array could grow and shrink or be
+ * reordered. All children that haven't already been validated are required to
+ * have a "key" property assigned to it. Error statuses are cached so a warning
+ * will only be shown once.
+ *
+ * @internal
+ * @param {ReactElement} element Element that requires a key.
+ * @param {*} parentType element's parent's type.
+ */
+
+
+function validateExplicitKey(element, parentType) {
+  {
+    if (!element._store || element._store.validated || element.key != null) {
+      return;
+    }
+
+    element._store.validated = true;
+    var currentComponentErrorInfo = getCurrentComponentErrorInfo(parentType);
+
+    if (ownerHasKeyUseWarning[currentComponentErrorInfo]) {
+      return;
+    }
+
+    ownerHasKeyUseWarning[currentComponentErrorInfo] = true; // Usually the current owner is the offender, but if it accepts children as a
+    // property, it may be the creator of the child that's responsible for
+    // assigning it a key.
+
+    var childOwner = '';
+
+    if (element && element._owner && element._owner !== ReactCurrentOwner$1.current) {
+      // Give the component that originally created this child.
+      childOwner = " It was passed a child from " + getComponentName(element._owner.type) + ".";
+    }
+
+    setCurrentlyValidatingElement$1(element);
+
+    error('Each child in a list should have a unique "key" prop.' + '%s%s See https://reactjs.org/link/warning-keys for more information.', currentComponentErrorInfo, childOwner);
+
+    setCurrentlyValidatingElement$1(null);
+  }
+}
+/**
+ * Ensure that every element either is passed in a static location, in an
+ * array with an explicit keys property defined, or in an object literal
+ * with valid key property.
+ *
+ * @internal
+ * @param {ReactNode} node Statically passed child of any type.
+ * @param {*} parentType node's parent's type.
+ */
+
+
+function validateChildKeys(node, parentType) {
+  {
+    if (typeof node !== 'object') {
+      return;
+    }
+
+    if (Array.isArray(node)) {
+      for (var i = 0; i < node.length; i++) {
+        var child = node[i];
+
+        if (isValidElement(child)) {
+          validateExplicitKey(child, parentType);
+        }
+      }
+    } else if (isValidElement(node)) {
+      // This element was passed in a valid location.
+      if (node._store) {
+        node._store.validated = true;
+      }
+    } else if (node) {
+      var iteratorFn = getIteratorFn(node);
+
+      if (typeof iteratorFn === 'function') {
+        // Entry iterators used to provide implicit keys,
+        // but now we print a separate warning for them later.
+        if (iteratorFn !== node.entries) {
+          var iterator = iteratorFn.call(node);
+          var step;
+
+          while (!(step = iterator.next()).done) {
+            if (isValidElement(step.value)) {
+              validateExplicitKey(step.value, parentType);
+            }
+          }
+        }
+      }
+    }
+  }
+}
+/**
+ * Given an element, validate that its props follow the propTypes definition,
+ * provided by the type.
+ *
+ * @param {ReactElement} element
+ */
+
+
+function validatePropTypes(element) {
+  {
+    var type = element.type;
+
+    if (type === null || type === undefined || typeof type === 'string') {
+      return;
+    }
+
+    var propTypes;
+
+    if (typeof type === 'function') {
+      propTypes = type.propTypes;
+    } else if (typeof type === 'object' && (type.$$typeof === REACT_FORWARD_REF_TYPE || // Note: Memo only checks outer props here.
+    // Inner props are checked in the reconciler.
+    type.$$typeof === REACT_MEMO_TYPE)) {
+      propTypes = type.propTypes;
+    } else {
+      return;
+    }
+
+    if (propTypes) {
+      // Intentionally inside to avoid triggering lazy initializers:
+      var name = getComponentName(type);
+      checkPropTypes(propTypes, element.props, 'prop', name, element);
+    } else if (type.PropTypes !== undefined && !propTypesMisspellWarningShown) {
+      propTypesMisspellWarningShown = true; // Intentionally inside to avoid triggering lazy initializers:
+
+      var _name = getComponentName(type);
+
+      error('Component %s declared `PropTypes` instead of `propTypes`. Did you misspell the property assignment?', _name || 'Unknown');
+    }
+
+    if (typeof type.getDefaultProps === 'function' && !type.getDefaultProps.isReactClassApproved) {
+      error('getDefaultProps is only used on classic React.createClass ' + 'definitions. Use a static property named `defaultProps` instead.');
+    }
+  }
+}
+/**
+ * Given a fragment, validate that it can only be provided with fragment props
+ * @param {ReactElement} fragment
+ */
+
+
+function validateFragmentProps(fragment) {
+  {
+    var keys = Object.keys(fragment.props);
+
+    for (var i = 0; i < keys.length; i++) {
+      var key = keys[i];
+
+      if (key !== 'children' && key !== 'key') {
+        setCurrentlyValidatingElement$1(fragment);
+
+        error('Invalid prop `%s` supplied to `React.Fragment`. ' + 'React.Fragment can only have `key` and `children` props.', key);
+
+        setCurrentlyValidatingElement$1(null);
+        break;
+      }
+    }
+
+    if (fragment.ref !== null) {
+      setCurrentlyValidatingElement$1(fragment);
+
+      error('Invalid attribute `ref` supplied to `React.Fragment`.');
+
+      setCurrentlyValidatingElement$1(null);
+    }
+  }
+}
+
+function jsxWithValidation(type, props, key, isStaticChildren, source, self) {
+  {
+    var validType = isValidElementType(type); // We warn in this case but don't throw. We expect the element creation to
+    // succeed and there will likely be errors in render.
+
+    if (!validType) {
+      var info = '';
+
+      if (type === undefined || typeof type === 'object' && type !== null && Object.keys(type).length === 0) {
+        info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and named imports.";
+      }
+
+      var sourceInfo = getSourceInfoErrorAddendum(source);
+
+      if (sourceInfo) {
+        info += sourceInfo;
+      } else {
+        info += getDeclarationErrorAddendum();
+      }
+
+      var typeString;
+
+      if (type === null) {
+        typeString = 'null';
+      } else if (Array.isArray(type)) {
+        typeString = 'array';
+      } else if (type !== undefined && type.$$typeof === REACT_ELEMENT_TYPE) {
+        typeString = "<" + (getComponentName(type.type) || 'Unknown') + " />";
+        info = ' Did you accidentally export a JSX literal instead of a component?';
+      } else {
+        typeString = typeof type;
+      }
+
+      error('React.jsx: type is invalid -- expected a string (for ' + 'built-in components) or a class/function (for composite ' + 'components) but got: %s.%s', typeString, info);
+    }
+
+    var element = jsxDEV(type, props, key, source, self); // The result can be nullish if a mock or a custom function is used.
+    // TODO: Drop this when these are no longer allowed as the type argument.
+
+    if (element == null) {
+      return element;
+    } // Skip key warning if the type isn't valid since our key validation logic
+    // doesn't expect a non-string/function type and can throw confusing errors.
+    // We don't want exception behavior to differ between dev and prod.
+    // (Rendering will throw with a helpful message and as soon as the type is
+    // fixed, the key warnings will appear.)
+
+
+    if (validType) {
+      var children = props.children;
+
+      if (children !== undefined) {
+        if (isStaticChildren) {
+          if (Array.isArray(children)) {
+            for (var i = 0; i < children.length; i++) {
+              validateChildKeys(children[i], type);
+            }
+
+            if (Object.freeze) {
+              Object.freeze(children);
+            }
+          } else {
+            error('React.jsx: Static children should always be an array. ' + 'You are likely explicitly calling React.jsxs or React.jsxDEV. ' + 'Use the Babel transform instead.');
+          }
+        } else {
+          validateChildKeys(children, type);
+        }
+      }
+    }
+
+    if (type === exports.Fragment) {
+      validateFragmentProps(element);
+    } else {
+      validatePropTypes(element);
+    }
+
+    return element;
+  }
+} // These two functions exist to still get child warnings in dev
+
+var jsxDEV$1 =  jsxWithValidation ;
+
+exports.jsxDEV = jsxDEV$1;
+  })();
+}
diff --git a/igv_component/node_modules/react/cjs/react-jsx-dev-runtime.production.min.js b/igv_component/node_modules/react/cjs/react-jsx-dev-runtime.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..a20e4b9242b9e08bd93aec5117b804288abd56a1
--- /dev/null
+++ b/igv_component/node_modules/react/cjs/react-jsx-dev-runtime.production.min.js
@@ -0,0 +1,9 @@
+/** @license React v16.14.0
+ * react-jsx-dev-runtime.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';require("react");exports.Fragment=60107;if("function"===typeof Symbol&&Symbol.for){var a=Symbol.for;exports.Fragment=a("react.fragment")}exports.jsxDEV=void 0;
diff --git a/igv_component/node_modules/react/cjs/react-jsx-runtime.development.js b/igv_component/node_modules/react/cjs/react-jsx-runtime.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..76e6f2457b9c4fdc6ef3329acf0ea638dc4d1aff
--- /dev/null
+++ b/igv_component/node_modules/react/cjs/react-jsx-runtime.development.js
@@ -0,0 +1,911 @@
+/** @license React v16.14.0
+ * react-jsx-runtime.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+var React = require('react');
+
+// ATTENTION
+// When adding new symbols to this file,
+// Please consider also adding to 'react-devtools-shared/src/backend/ReactSymbols'
+// The Symbol used to tag the ReactElement-like types. If there is no native Symbol
+// nor polyfill, then a plain number is used for performance.
+var REACT_ELEMENT_TYPE = 0xeac7;
+var REACT_PORTAL_TYPE = 0xeaca;
+exports.Fragment = 0xeacb;
+var REACT_STRICT_MODE_TYPE = 0xeacc;
+var REACT_PROFILER_TYPE = 0xead2;
+var REACT_PROVIDER_TYPE = 0xeacd;
+var REACT_CONTEXT_TYPE = 0xeace;
+var REACT_FORWARD_REF_TYPE = 0xead0;
+var REACT_SUSPENSE_TYPE = 0xead1;
+var REACT_SUSPENSE_LIST_TYPE = 0xead8;
+var REACT_MEMO_TYPE = 0xead3;
+var REACT_LAZY_TYPE = 0xead4;
+var REACT_BLOCK_TYPE = 0xead9;
+var REACT_SERVER_BLOCK_TYPE = 0xeada;
+var REACT_FUNDAMENTAL_TYPE = 0xead5;
+var REACT_SCOPE_TYPE = 0xead7;
+var REACT_OPAQUE_ID_TYPE = 0xeae0;
+var REACT_DEBUG_TRACING_MODE_TYPE = 0xeae1;
+var REACT_OFFSCREEN_TYPE = 0xeae2;
+var REACT_LEGACY_HIDDEN_TYPE = 0xeae3;
+
+if (typeof Symbol === 'function' && Symbol.for) {
+  var symbolFor = Symbol.for;
+  REACT_ELEMENT_TYPE = symbolFor('react.element');
+  REACT_PORTAL_TYPE = symbolFor('react.portal');
+  exports.Fragment = symbolFor('react.fragment');
+  REACT_STRICT_MODE_TYPE = symbolFor('react.strict_mode');
+  REACT_PROFILER_TYPE = symbolFor('react.profiler');
+  REACT_PROVIDER_TYPE = symbolFor('react.provider');
+  REACT_CONTEXT_TYPE = symbolFor('react.context');
+  REACT_FORWARD_REF_TYPE = symbolFor('react.forward_ref');
+  REACT_SUSPENSE_TYPE = symbolFor('react.suspense');
+  REACT_SUSPENSE_LIST_TYPE = symbolFor('react.suspense_list');
+  REACT_MEMO_TYPE = symbolFor('react.memo');
+  REACT_LAZY_TYPE = symbolFor('react.lazy');
+  REACT_BLOCK_TYPE = symbolFor('react.block');
+  REACT_SERVER_BLOCK_TYPE = symbolFor('react.server.block');
+  REACT_FUNDAMENTAL_TYPE = symbolFor('react.fundamental');
+  REACT_SCOPE_TYPE = symbolFor('react.scope');
+  REACT_OPAQUE_ID_TYPE = symbolFor('react.opaque.id');
+  REACT_DEBUG_TRACING_MODE_TYPE = symbolFor('react.debug_trace_mode');
+  REACT_OFFSCREEN_TYPE = symbolFor('react.offscreen');
+  REACT_LEGACY_HIDDEN_TYPE = symbolFor('react.legacy_hidden');
+}
+
+var MAYBE_ITERATOR_SYMBOL = typeof Symbol === 'function' && Symbol.iterator;
+var FAUX_ITERATOR_SYMBOL = '@@iterator';
+function getIteratorFn(maybeIterable) {
+  if (maybeIterable === null || typeof maybeIterable !== 'object') {
+    return null;
+  }
+
+  var maybeIterator = MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL];
+
+  if (typeof maybeIterator === 'function') {
+    return maybeIterator;
+  }
+
+  return null;
+}
+
+var ReactSharedInternals = React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED;
+
+function error(format) {
+  {
+    for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+      args[_key2 - 1] = arguments[_key2];
+    }
+
+    printWarning('error', format, args);
+  }
+}
+
+function printWarning(level, format, args) {
+  // When changing this logic, you might want to also
+  // update consoleWithStackDev.www.js as well.
+  {
+    var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+    var stack = '';
+
+    if (currentlyValidatingElement) {
+      var name = getComponentName(currentlyValidatingElement.type);
+      var owner = currentlyValidatingElement._owner;
+      stack += describeComponentFrame(name, currentlyValidatingElement._source, owner && getComponentName(owner.type));
+    }
+
+    stack += ReactDebugCurrentFrame.getStackAddendum();
+
+    if (stack !== '') {
+      format += '%s';
+      args = args.concat([stack]);
+    }
+
+    var argsWithFormat = args.map(function (item) {
+      return '' + item;
+    }); // Careful: RN currently depends on this prefix
+
+    argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it
+    // breaks IE9: https://github.com/facebook/react/issues/13610
+    // eslint-disable-next-line react-internal/no-production-logging
+
+    Function.prototype.apply.call(console[level], console, argsWithFormat);
+  }
+}
+
+// Filter certain DOM attributes (e.g. src, href) if their values are empty strings.
+
+var enableScopeAPI = false; // Experimental Create Event Handle API.
+
+function isValidElementType(type) {
+  if (typeof type === 'string' || typeof type === 'function') {
+    return true;
+  } // Note: typeof might be other than 'symbol' or 'number' (e.g. if it's a polyfill).
+
+
+  if (type === exports.Fragment || type === REACT_PROFILER_TYPE || type === REACT_DEBUG_TRACING_MODE_TYPE || type === REACT_STRICT_MODE_TYPE || type === REACT_SUSPENSE_TYPE || type === REACT_SUSPENSE_LIST_TYPE || type === REACT_LEGACY_HIDDEN_TYPE || enableScopeAPI ) {
+    return true;
+  }
+
+  if (typeof type === 'object' && type !== null) {
+    if (type.$$typeof === REACT_LAZY_TYPE || type.$$typeof === REACT_MEMO_TYPE || type.$$typeof === REACT_PROVIDER_TYPE || type.$$typeof === REACT_CONTEXT_TYPE || type.$$typeof === REACT_FORWARD_REF_TYPE || type.$$typeof === REACT_FUNDAMENTAL_TYPE || type.$$typeof === REACT_BLOCK_TYPE || type[0] === REACT_SERVER_BLOCK_TYPE) {
+      return true;
+    }
+  }
+
+  return false;
+}
+
+
+var BEFORE_SLASH_RE = /^(.*)[\\\/]/;
+function describeComponentFrame (name, source, ownerName) {
+  var sourceInfo = '';
+
+  if (source) {
+    var path = source.fileName;
+    var fileName = path.replace(BEFORE_SLASH_RE, '');
+
+    {
+      // In DEV, include code for a common special case:
+      // prefer "folder/index.js" instead of just "index.js".
+      if (/^index\./.test(fileName)) {
+        var match = path.match(BEFORE_SLASH_RE);
+
+        if (match) {
+          var pathBeforeSlash = match[1];
+
+          if (pathBeforeSlash) {
+            var folderName = pathBeforeSlash.replace(BEFORE_SLASH_RE, '');
+            fileName = folderName + '/' + fileName;
+          }
+        }
+      }
+    }
+
+    sourceInfo = ' (at ' + fileName + ':' + source.lineNumber + ')';
+  } else if (ownerName) {
+    sourceInfo = ' (created by ' + ownerName + ')';
+  }
+
+  return '\n    in ' + (name || 'Unknown') + sourceInfo;
+}
+
+var Resolved = 1;
+function refineResolvedLazyComponent(lazyComponent) {
+  return lazyComponent._status === Resolved ? lazyComponent._result : null;
+}
+
+function getWrappedName(outerType, innerType, wrapperName) {
+  var functionName = innerType.displayName || innerType.name || '';
+  return outerType.displayName || (functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName);
+}
+
+function getComponentName(type) {
+  if (type == null) {
+    // Host root, text node or just invalid type.
+    return null;
+  }
+
+  {
+    if (typeof type.tag === 'number') {
+      error('Received an unexpected object in getComponentName(). ' + 'This is likely a bug in React. Please file an issue.');
+    }
+  }
+
+  if (typeof type === 'function') {
+    return type.displayName || type.name || null;
+  }
+
+  if (typeof type === 'string') {
+    return type;
+  }
+
+  switch (type) {
+    case exports.Fragment:
+      return 'Fragment';
+
+    case REACT_PORTAL_TYPE:
+      return 'Portal';
+
+    case REACT_PROFILER_TYPE:
+      return "Profiler";
+
+    case REACT_STRICT_MODE_TYPE:
+      return 'StrictMode';
+
+    case REACT_SUSPENSE_TYPE:
+      return 'Suspense';
+
+    case REACT_SUSPENSE_LIST_TYPE:
+      return 'SuspenseList';
+  }
+
+  if (typeof type === 'object') {
+    switch (type.$$typeof) {
+      case REACT_CONTEXT_TYPE:
+        return 'Context.Consumer';
+
+      case REACT_PROVIDER_TYPE:
+        return 'Context.Provider';
+
+      case REACT_FORWARD_REF_TYPE:
+        return getWrappedName(type, type.render, 'ForwardRef');
+
+      case REACT_MEMO_TYPE:
+        return getComponentName(type.type);
+
+      case REACT_BLOCK_TYPE:
+        return getComponentName(type.render);
+
+      case REACT_LAZY_TYPE:
+        {
+          var thenable = type;
+          var resolvedThenable = refineResolvedLazyComponent(thenable);
+
+          if (resolvedThenable) {
+            return getComponentName(resolvedThenable);
+          }
+
+          break;
+        }
+    }
+  }
+
+  return null;
+}
+
+var loggedTypeFailures = {};
+var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+var currentlyValidatingElement = null;
+
+function setCurrentlyValidatingElement(element) {
+  {
+    currentlyValidatingElement = element;
+  }
+}
+
+function checkPropTypes(typeSpecs, values, location, componentName, element) {
+  {
+    // $FlowFixMe This is okay but Flow doesn't know it.
+    var has = Function.call.bind(Object.prototype.hasOwnProperty);
+
+    for (var typeSpecName in typeSpecs) {
+      if (has(typeSpecs, typeSpecName)) {
+        var error$1 = void 0; // Prop type validation may throw. In case they do, we don't want to
+        // fail the render phase where it didn't fail before. So we log it.
+        // After these have been cleaned up, we'll let them throw.
+
+        try {
+          // This is intentionally an invariant that gets caught. It's the same
+          // behavior as without this statement except with a better message.
+          if (typeof typeSpecs[typeSpecName] !== 'function') {
+            var err = Error((componentName || 'React class') + ': ' + location + ' type `' + typeSpecName + '` is invalid; ' + 'it must be a function, usually from the `prop-types` package, but received `' + typeof typeSpecs[typeSpecName] + '`.' + 'This often happens because of typos such as `PropTypes.function` instead of `PropTypes.func`.');
+            err.name = 'Invariant Violation';
+            throw err;
+          }
+
+          error$1 = typeSpecs[typeSpecName](values, typeSpecName, componentName, location, null, 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED');
+        } catch (ex) {
+          error$1 = ex;
+        }
+
+        if (error$1 && !(error$1 instanceof Error)) {
+          setCurrentlyValidatingElement(element);
+
+          error('%s: type specification of %s' + ' `%s` is invalid; the type checker ' + 'function must return `null` or an `Error` but returned a %s. ' + 'You may have forgotten to pass an argument to the type checker ' + 'creator (arrayOf, instanceOf, objectOf, oneOf, oneOfType, and ' + 'shape all require an argument).', componentName || 'React class', location, typeSpecName, typeof error$1);
+
+          setCurrentlyValidatingElement(null);
+        }
+
+        if (error$1 instanceof Error && !(error$1.message in loggedTypeFailures)) {
+          // Only monitor this failure once because there tends to be a lot of the
+          // same error.
+          loggedTypeFailures[error$1.message] = true;
+          setCurrentlyValidatingElement(element);
+
+          error('Failed %s type: %s', location, error$1.message);
+
+          setCurrentlyValidatingElement(null);
+        }
+      }
+    }
+  }
+}
+
+var ReactCurrentOwner = ReactSharedInternals.ReactCurrentOwner;
+var hasOwnProperty = Object.prototype.hasOwnProperty;
+var RESERVED_PROPS = {
+  key: true,
+  ref: true,
+  __self: true,
+  __source: true
+};
+var specialPropKeyWarningShown;
+var specialPropRefWarningShown;
+var didWarnAboutStringRefs;
+
+{
+  didWarnAboutStringRefs = {};
+}
+
+function hasValidRef(config) {
+  {
+    if (hasOwnProperty.call(config, 'ref')) {
+      var getter = Object.getOwnPropertyDescriptor(config, 'ref').get;
+
+      if (getter && getter.isReactWarning) {
+        return false;
+      }
+    }
+  }
+
+  return config.ref !== undefined;
+}
+
+function hasValidKey(config) {
+  {
+    if (hasOwnProperty.call(config, 'key')) {
+      var getter = Object.getOwnPropertyDescriptor(config, 'key').get;
+
+      if (getter && getter.isReactWarning) {
+        return false;
+      }
+    }
+  }
+
+  return config.key !== undefined;
+}
+
+function warnIfStringRefCannotBeAutoConverted(config, self) {
+  {
+    if (typeof config.ref === 'string' && ReactCurrentOwner.current && self && ReactCurrentOwner.current.stateNode !== self) {
+      var componentName = getComponentName(ReactCurrentOwner.current.type);
+
+      if (!didWarnAboutStringRefs[componentName]) {
+        error('Component "%s" contains the string ref "%s". ' + 'Support for string refs will be removed in a future major release. ' + 'This case cannot be automatically converted to an arrow function. ' + 'We ask you to manually fix this case by using useRef() or createRef() instead. ' + 'Learn more about using refs safely here: ' + 'https://reactjs.org/link/strict-mode-string-ref', getComponentName(ReactCurrentOwner.current.type), config.ref);
+
+        didWarnAboutStringRefs[componentName] = true;
+      }
+    }
+  }
+}
+
+function defineKeyPropWarningGetter(props, displayName) {
+  {
+    var warnAboutAccessingKey = function () {
+      if (!specialPropKeyWarningShown) {
+        specialPropKeyWarningShown = true;
+
+        error('%s: `key` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https://reactjs.org/link/special-props)', displayName);
+      }
+    };
+
+    warnAboutAccessingKey.isReactWarning = true;
+    Object.defineProperty(props, 'key', {
+      get: warnAboutAccessingKey,
+      configurable: true
+    });
+  }
+}
+
+function defineRefPropWarningGetter(props, displayName) {
+  {
+    var warnAboutAccessingRef = function () {
+      if (!specialPropRefWarningShown) {
+        specialPropRefWarningShown = true;
+
+        error('%s: `ref` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https://reactjs.org/link/special-props)', displayName);
+      }
+    };
+
+    warnAboutAccessingRef.isReactWarning = true;
+    Object.defineProperty(props, 'ref', {
+      get: warnAboutAccessingRef,
+      configurable: true
+    });
+  }
+}
+/**
+ * Factory method to create a new React element. This no longer adheres to
+ * the class pattern, so do not use new to call it. Also, instanceof check
+ * will not work. Instead test $$typeof field against Symbol.for('react.element') to check
+ * if something is a React Element.
+ *
+ * @param {*} type
+ * @param {*} props
+ * @param {*} key
+ * @param {string|object} ref
+ * @param {*} owner
+ * @param {*} self A *temporary* helper to detect places where `this` is
+ * different from the `owner` when React.createElement is called, so that we
+ * can warn. We want to get rid of owner and replace string `ref`s with arrow
+ * functions, and as long as `this` and owner are the same, there will be no
+ * change in behavior.
+ * @param {*} source An annotation object (added by a transpiler or otherwise)
+ * indicating filename, line number, and/or other information.
+ * @internal
+ */
+
+
+var ReactElement = function (type, key, ref, self, source, owner, props) {
+  var element = {
+    // This tag allows us to uniquely identify this as a React Element
+    $$typeof: REACT_ELEMENT_TYPE,
+    // Built-in properties that belong on the element
+    type: type,
+    key: key,
+    ref: ref,
+    props: props,
+    // Record the component responsible for creating this element.
+    _owner: owner
+  };
+
+  {
+    // The validation flag is currently mutative. We put it on
+    // an external backing store so that we can freeze the whole object.
+    // This can be replaced with a WeakMap once they are implemented in
+    // commonly used development environments.
+    element._store = {}; // To make comparing ReactElements easier for testing purposes, we make
+    // the validation flag non-enumerable (where possible, which should
+    // include every environment we run tests in), so the test framework
+    // ignores it.
+
+    Object.defineProperty(element._store, 'validated', {
+      configurable: false,
+      enumerable: false,
+      writable: true,
+      value: false
+    }); // self and source are DEV only properties.
+
+    Object.defineProperty(element, '_self', {
+      configurable: false,
+      enumerable: false,
+      writable: false,
+      value: self
+    }); // Two elements created in two different places should be considered
+    // equal for testing purposes and therefore we hide it from enumeration.
+
+    Object.defineProperty(element, '_source', {
+      configurable: false,
+      enumerable: false,
+      writable: false,
+      value: source
+    });
+
+    if (Object.freeze) {
+      Object.freeze(element.props);
+      Object.freeze(element);
+    }
+  }
+
+  return element;
+};
+/**
+ * https://github.com/reactjs/rfcs/pull/107
+ * @param {*} type
+ * @param {object} props
+ * @param {string} key
+ */
+
+function jsxDEV(type, config, maybeKey, source, self) {
+  {
+    var propName; // Reserved names are extracted
+
+    var props = {};
+    var key = null;
+    var ref = null; // Currently, key can be spread in as a prop. This causes a potential
+    // issue if key is also explicitly declared (ie. <div {...props} key="Hi" />
+    // or <div key="Hi" {...props} /> ). We want to deprecate key spread,
+    // but as an intermediary step, we will use jsxDEV for everything except
+    // <div {...props} key="Hi" />, because we aren't currently able to tell if
+    // key is explicitly declared to be undefined or not.
+
+    if (maybeKey !== undefined) {
+      key = '' + maybeKey;
+    }
+
+    if (hasValidKey(config)) {
+      key = '' + config.key;
+    }
+
+    if (hasValidRef(config)) {
+      ref = config.ref;
+      warnIfStringRefCannotBeAutoConverted(config, self);
+    } // Remaining properties are added to a new props object
+
+
+    for (propName in config) {
+      if (hasOwnProperty.call(config, propName) && !RESERVED_PROPS.hasOwnProperty(propName)) {
+        props[propName] = config[propName];
+      }
+    } // Resolve default props
+
+
+    if (type && type.defaultProps) {
+      var defaultProps = type.defaultProps;
+
+      for (propName in defaultProps) {
+        if (props[propName] === undefined) {
+          props[propName] = defaultProps[propName];
+        }
+      }
+    }
+
+    if (key || ref) {
+      var displayName = typeof type === 'function' ? type.displayName || type.name || 'Unknown' : type;
+
+      if (key) {
+        defineKeyPropWarningGetter(props, displayName);
+      }
+
+      if (ref) {
+        defineRefPropWarningGetter(props, displayName);
+      }
+    }
+
+    return ReactElement(type, key, ref, self, source, ReactCurrentOwner.current, props);
+  }
+}
+
+var ReactCurrentOwner$1 = ReactSharedInternals.ReactCurrentOwner;
+var ReactDebugCurrentFrame$1 = ReactSharedInternals.ReactDebugCurrentFrame;
+
+function setCurrentlyValidatingElement$1(element) {
+  currentlyValidatingElement = element;
+}
+
+var propTypesMisspellWarningShown;
+
+{
+  propTypesMisspellWarningShown = false;
+}
+/**
+ * Verifies the object is a ReactElement.
+ * See https://reactjs.org/docs/react-api.html#isvalidelement
+ * @param {?object} object
+ * @return {boolean} True if `object` is a ReactElement.
+ * @final
+ */
+
+function isValidElement(object) {
+  {
+    return typeof object === 'object' && object !== null && object.$$typeof === REACT_ELEMENT_TYPE;
+  }
+}
+
+function getDeclarationErrorAddendum() {
+  {
+    if (ReactCurrentOwner$1.current) {
+      var name = getComponentName(ReactCurrentOwner$1.current.type);
+
+      if (name) {
+        return '\n\nCheck the render method of `' + name + '`.';
+      }
+    }
+
+    return '';
+  }
+}
+
+function getSourceInfoErrorAddendum(source) {
+  {
+    if (source !== undefined) {
+      var fileName = source.fileName.replace(/^.*[\\\/]/, '');
+      var lineNumber = source.lineNumber;
+      return '\n\nCheck your code at ' + fileName + ':' + lineNumber + '.';
+    }
+
+    return '';
+  }
+}
+/**
+ * Warn if there's no key explicitly set on dynamic arrays of children or
+ * object keys are not valid. This allows us to keep track of children between
+ * updates.
+ */
+
+
+var ownerHasKeyUseWarning = {};
+
+function getCurrentComponentErrorInfo(parentType) {
+  {
+    var info = getDeclarationErrorAddendum();
+
+    if (!info) {
+      var parentName = typeof parentType === 'string' ? parentType : parentType.displayName || parentType.name;
+
+      if (parentName) {
+        info = "\n\nCheck the top-level render call using <" + parentName + ">.";
+      }
+    }
+
+    return info;
+  }
+}
+/**
+ * Warn if the element doesn't have an explicit key assigned to it.
+ * This element is in an array. The array could grow and shrink or be
+ * reordered. All children that haven't already been validated are required to
+ * have a "key" property assigned to it. Error statuses are cached so a warning
+ * will only be shown once.
+ *
+ * @internal
+ * @param {ReactElement} element Element that requires a key.
+ * @param {*} parentType element's parent's type.
+ */
+
+
+function validateExplicitKey(element, parentType) {
+  {
+    if (!element._store || element._store.validated || element.key != null) {
+      return;
+    }
+
+    element._store.validated = true;
+    var currentComponentErrorInfo = getCurrentComponentErrorInfo(parentType);
+
+    if (ownerHasKeyUseWarning[currentComponentErrorInfo]) {
+      return;
+    }
+
+    ownerHasKeyUseWarning[currentComponentErrorInfo] = true; // Usually the current owner is the offender, but if it accepts children as a
+    // property, it may be the creator of the child that's responsible for
+    // assigning it a key.
+
+    var childOwner = '';
+
+    if (element && element._owner && element._owner !== ReactCurrentOwner$1.current) {
+      // Give the component that originally created this child.
+      childOwner = " It was passed a child from " + getComponentName(element._owner.type) + ".";
+    }
+
+    setCurrentlyValidatingElement$1(element);
+
+    error('Each child in a list should have a unique "key" prop.' + '%s%s See https://reactjs.org/link/warning-keys for more information.', currentComponentErrorInfo, childOwner);
+
+    setCurrentlyValidatingElement$1(null);
+  }
+}
+/**
+ * Ensure that every element either is passed in a static location, in an
+ * array with an explicit keys property defined, or in an object literal
+ * with valid key property.
+ *
+ * @internal
+ * @param {ReactNode} node Statically passed child of any type.
+ * @param {*} parentType node's parent's type.
+ */
+
+
+function validateChildKeys(node, parentType) {
+  {
+    if (typeof node !== 'object') {
+      return;
+    }
+
+    if (Array.isArray(node)) {
+      for (var i = 0; i < node.length; i++) {
+        var child = node[i];
+
+        if (isValidElement(child)) {
+          validateExplicitKey(child, parentType);
+        }
+      }
+    } else if (isValidElement(node)) {
+      // This element was passed in a valid location.
+      if (node._store) {
+        node._store.validated = true;
+      }
+    } else if (node) {
+      var iteratorFn = getIteratorFn(node);
+
+      if (typeof iteratorFn === 'function') {
+        // Entry iterators used to provide implicit keys,
+        // but now we print a separate warning for them later.
+        if (iteratorFn !== node.entries) {
+          var iterator = iteratorFn.call(node);
+          var step;
+
+          while (!(step = iterator.next()).done) {
+            if (isValidElement(step.value)) {
+              validateExplicitKey(step.value, parentType);
+            }
+          }
+        }
+      }
+    }
+  }
+}
+/**
+ * Given an element, validate that its props follow the propTypes definition,
+ * provided by the type.
+ *
+ * @param {ReactElement} element
+ */
+
+
+function validatePropTypes(element) {
+  {
+    var type = element.type;
+
+    if (type === null || type === undefined || typeof type === 'string') {
+      return;
+    }
+
+    var propTypes;
+
+    if (typeof type === 'function') {
+      propTypes = type.propTypes;
+    } else if (typeof type === 'object' && (type.$$typeof === REACT_FORWARD_REF_TYPE || // Note: Memo only checks outer props here.
+    // Inner props are checked in the reconciler.
+    type.$$typeof === REACT_MEMO_TYPE)) {
+      propTypes = type.propTypes;
+    } else {
+      return;
+    }
+
+    if (propTypes) {
+      // Intentionally inside to avoid triggering lazy initializers:
+      var name = getComponentName(type);
+      checkPropTypes(propTypes, element.props, 'prop', name, element);
+    } else if (type.PropTypes !== undefined && !propTypesMisspellWarningShown) {
+      propTypesMisspellWarningShown = true; // Intentionally inside to avoid triggering lazy initializers:
+
+      var _name = getComponentName(type);
+
+      error('Component %s declared `PropTypes` instead of `propTypes`. Did you misspell the property assignment?', _name || 'Unknown');
+    }
+
+    if (typeof type.getDefaultProps === 'function' && !type.getDefaultProps.isReactClassApproved) {
+      error('getDefaultProps is only used on classic React.createClass ' + 'definitions. Use a static property named `defaultProps` instead.');
+    }
+  }
+}
+/**
+ * Given a fragment, validate that it can only be provided with fragment props
+ * @param {ReactElement} fragment
+ */
+
+
+function validateFragmentProps(fragment) {
+  {
+    var keys = Object.keys(fragment.props);
+
+    for (var i = 0; i < keys.length; i++) {
+      var key = keys[i];
+
+      if (key !== 'children' && key !== 'key') {
+        setCurrentlyValidatingElement$1(fragment);
+
+        error('Invalid prop `%s` supplied to `React.Fragment`. ' + 'React.Fragment can only have `key` and `children` props.', key);
+
+        setCurrentlyValidatingElement$1(null);
+        break;
+      }
+    }
+
+    if (fragment.ref !== null) {
+      setCurrentlyValidatingElement$1(fragment);
+
+      error('Invalid attribute `ref` supplied to `React.Fragment`.');
+
+      setCurrentlyValidatingElement$1(null);
+    }
+  }
+}
+
+function jsxWithValidation(type, props, key, isStaticChildren, source, self) {
+  {
+    var validType = isValidElementType(type); // We warn in this case but don't throw. We expect the element creation to
+    // succeed and there will likely be errors in render.
+
+    if (!validType) {
+      var info = '';
+
+      if (type === undefined || typeof type === 'object' && type !== null && Object.keys(type).length === 0) {
+        info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and named imports.";
+      }
+
+      var sourceInfo = getSourceInfoErrorAddendum(source);
+
+      if (sourceInfo) {
+        info += sourceInfo;
+      } else {
+        info += getDeclarationErrorAddendum();
+      }
+
+      var typeString;
+
+      if (type === null) {
+        typeString = 'null';
+      } else if (Array.isArray(type)) {
+        typeString = 'array';
+      } else if (type !== undefined && type.$$typeof === REACT_ELEMENT_TYPE) {
+        typeString = "<" + (getComponentName(type.type) || 'Unknown') + " />";
+        info = ' Did you accidentally export a JSX literal instead of a component?';
+      } else {
+        typeString = typeof type;
+      }
+
+      error('React.jsx: type is invalid -- expected a string (for ' + 'built-in components) or a class/function (for composite ' + 'components) but got: %s.%s', typeString, info);
+    }
+
+    var element = jsxDEV(type, props, key, source, self); // The result can be nullish if a mock or a custom function is used.
+    // TODO: Drop this when these are no longer allowed as the type argument.
+
+    if (element == null) {
+      return element;
+    } // Skip key warning if the type isn't valid since our key validation logic
+    // doesn't expect a non-string/function type and can throw confusing errors.
+    // We don't want exception behavior to differ between dev and prod.
+    // (Rendering will throw with a helpful message and as soon as the type is
+    // fixed, the key warnings will appear.)
+
+
+    if (validType) {
+      var children = props.children;
+
+      if (children !== undefined) {
+        if (isStaticChildren) {
+          if (Array.isArray(children)) {
+            for (var i = 0; i < children.length; i++) {
+              validateChildKeys(children[i], type);
+            }
+
+            if (Object.freeze) {
+              Object.freeze(children);
+            }
+          } else {
+            error('React.jsx: Static children should always be an array. ' + 'You are likely explicitly calling React.jsxs or React.jsxDEV. ' + 'Use the Babel transform instead.');
+          }
+        } else {
+          validateChildKeys(children, type);
+        }
+      }
+    }
+
+    if (type === exports.Fragment) {
+      validateFragmentProps(element);
+    } else {
+      validatePropTypes(element);
+    }
+
+    return element;
+  }
+} // These two functions exist to still get child warnings in dev
+// even with the prod transform. This means that jsxDEV is purely
+// opt-in behavior for better messages but that we won't stop
+// giving you warnings if you use production apis.
+
+function jsxWithValidationStatic(type, props, key) {
+  {
+    return jsxWithValidation(type, props, key, true);
+  }
+}
+function jsxWithValidationDynamic(type, props, key) {
+  {
+    return jsxWithValidation(type, props, key, false);
+  }
+}
+
+var jsx =  jsxWithValidationDynamic ; // we may want to special case jsxs internally to take advantage of static children.
+// for now we can ship identical prod functions
+
+var jsxs =  jsxWithValidationStatic ;
+
+exports.jsx = jsx;
+exports.jsxs = jsxs;
+  })();
+}
diff --git a/igv_component/node_modules/react/cjs/react-jsx-runtime.production.min.js b/igv_component/node_modules/react/cjs/react-jsx-runtime.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..cbc6bf496a528d6af332f8a6a179bb42696a4bad
--- /dev/null
+++ b/igv_component/node_modules/react/cjs/react-jsx-runtime.production.min.js
@@ -0,0 +1,10 @@
+/** @license React v16.14.0
+ * react-jsx-runtime.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';var f=require("react"),g=60103;exports.Fragment=60107;if("function"===typeof Symbol&&Symbol.for){var h=Symbol.for;g=h("react.element");exports.Fragment=h("react.fragment")}var m=f.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.ReactCurrentOwner,n=Object.prototype.hasOwnProperty,p={key:!0,ref:!0,__self:!0,__source:!0};
+function q(c,a,k){var b,d={},e=null,l=null;void 0!==k&&(e=""+k);void 0!==a.key&&(e=""+a.key);void 0!==a.ref&&(l=a.ref);for(b in a)n.call(a,b)&&!p.hasOwnProperty(b)&&(d[b]=a[b]);if(c&&c.defaultProps)for(b in a=c.defaultProps,a)void 0===d[b]&&(d[b]=a[b]);return{$$typeof:g,type:c,key:e,ref:l,props:d,_owner:m.current}}exports.jsx=q;exports.jsxs=q;
diff --git a/igv_component/node_modules/react/cjs/react.development.js b/igv_component/node_modules/react/cjs/react.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..3bb78976e91bb263afe8c01ea50866c927fc0ecf
--- /dev/null
+++ b/igv_component/node_modules/react/cjs/react.development.js
@@ -0,0 +1,1912 @@
+/** @license React v16.14.0
+ * react.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+var _assign = require('object-assign');
+var checkPropTypes = require('prop-types/checkPropTypes');
+
+var ReactVersion = '16.14.0';
+
+// The Symbol used to tag the ReactElement-like types. If there is no native Symbol
+// nor polyfill, then a plain number is used for performance.
+var hasSymbol = typeof Symbol === 'function' && Symbol.for;
+var REACT_ELEMENT_TYPE = hasSymbol ? Symbol.for('react.element') : 0xeac7;
+var REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca;
+var REACT_FRAGMENT_TYPE = hasSymbol ? Symbol.for('react.fragment') : 0xeacb;
+var REACT_STRICT_MODE_TYPE = hasSymbol ? Symbol.for('react.strict_mode') : 0xeacc;
+var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for('react.profiler') : 0xead2;
+var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for('react.provider') : 0xeacd;
+var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for('react.context') : 0xeace; // TODO: We don't use AsyncMode or ConcurrentMode anymore. They were temporary
+var REACT_CONCURRENT_MODE_TYPE = hasSymbol ? Symbol.for('react.concurrent_mode') : 0xeacf;
+var REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for('react.forward_ref') : 0xead0;
+var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for('react.suspense') : 0xead1;
+var REACT_SUSPENSE_LIST_TYPE = hasSymbol ? Symbol.for('react.suspense_list') : 0xead8;
+var REACT_MEMO_TYPE = hasSymbol ? Symbol.for('react.memo') : 0xead3;
+var REACT_LAZY_TYPE = hasSymbol ? Symbol.for('react.lazy') : 0xead4;
+var REACT_BLOCK_TYPE = hasSymbol ? Symbol.for('react.block') : 0xead9;
+var REACT_FUNDAMENTAL_TYPE = hasSymbol ? Symbol.for('react.fundamental') : 0xead5;
+var REACT_RESPONDER_TYPE = hasSymbol ? Symbol.for('react.responder') : 0xead6;
+var REACT_SCOPE_TYPE = hasSymbol ? Symbol.for('react.scope') : 0xead7;
+var MAYBE_ITERATOR_SYMBOL = typeof Symbol === 'function' && Symbol.iterator;
+var FAUX_ITERATOR_SYMBOL = '@@iterator';
+function getIteratorFn(maybeIterable) {
+  if (maybeIterable === null || typeof maybeIterable !== 'object') {
+    return null;
+  }
+
+  var maybeIterator = MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL];
+
+  if (typeof maybeIterator === 'function') {
+    return maybeIterator;
+  }
+
+  return null;
+}
+
+/**
+ * Keeps track of the current dispatcher.
+ */
+var ReactCurrentDispatcher = {
+  /**
+   * @internal
+   * @type {ReactComponent}
+   */
+  current: null
+};
+
+/**
+ * Keeps track of the current batch's configuration such as how long an update
+ * should suspend for if it needs to.
+ */
+var ReactCurrentBatchConfig = {
+  suspense: null
+};
+
+/**
+ * Keeps track of the current owner.
+ *
+ * The current owner is the component who should own any components that are
+ * currently being constructed.
+ */
+var ReactCurrentOwner = {
+  /**
+   * @internal
+   * @type {ReactComponent}
+   */
+  current: null
+};
+
+var BEFORE_SLASH_RE = /^(.*)[\\\/]/;
+function describeComponentFrame (name, source, ownerName) {
+  var sourceInfo = '';
+
+  if (source) {
+    var path = source.fileName;
+    var fileName = path.replace(BEFORE_SLASH_RE, '');
+
+    {
+      // In DEV, include code for a common special case:
+      // prefer "folder/index.js" instead of just "index.js".
+      if (/^index\./.test(fileName)) {
+        var match = path.match(BEFORE_SLASH_RE);
+
+        if (match) {
+          var pathBeforeSlash = match[1];
+
+          if (pathBeforeSlash) {
+            var folderName = pathBeforeSlash.replace(BEFORE_SLASH_RE, '');
+            fileName = folderName + '/' + fileName;
+          }
+        }
+      }
+    }
+
+    sourceInfo = ' (at ' + fileName + ':' + source.lineNumber + ')';
+  } else if (ownerName) {
+    sourceInfo = ' (created by ' + ownerName + ')';
+  }
+
+  return '\n    in ' + (name || 'Unknown') + sourceInfo;
+}
+
+var Resolved = 1;
+function refineResolvedLazyComponent(lazyComponent) {
+  return lazyComponent._status === Resolved ? lazyComponent._result : null;
+}
+
+function getWrappedName(outerType, innerType, wrapperName) {
+  var functionName = innerType.displayName || innerType.name || '';
+  return outerType.displayName || (functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName);
+}
+
+function getComponentName(type) {
+  if (type == null) {
+    // Host root, text node or just invalid type.
+    return null;
+  }
+
+  {
+    if (typeof type.tag === 'number') {
+      error('Received an unexpected object in getComponentName(). ' + 'This is likely a bug in React. Please file an issue.');
+    }
+  }
+
+  if (typeof type === 'function') {
+    return type.displayName || type.name || null;
+  }
+
+  if (typeof type === 'string') {
+    return type;
+  }
+
+  switch (type) {
+    case REACT_FRAGMENT_TYPE:
+      return 'Fragment';
+
+    case REACT_PORTAL_TYPE:
+      return 'Portal';
+
+    case REACT_PROFILER_TYPE:
+      return "Profiler";
+
+    case REACT_STRICT_MODE_TYPE:
+      return 'StrictMode';
+
+    case REACT_SUSPENSE_TYPE:
+      return 'Suspense';
+
+    case REACT_SUSPENSE_LIST_TYPE:
+      return 'SuspenseList';
+  }
+
+  if (typeof type === 'object') {
+    switch (type.$$typeof) {
+      case REACT_CONTEXT_TYPE:
+        return 'Context.Consumer';
+
+      case REACT_PROVIDER_TYPE:
+        return 'Context.Provider';
+
+      case REACT_FORWARD_REF_TYPE:
+        return getWrappedName(type, type.render, 'ForwardRef');
+
+      case REACT_MEMO_TYPE:
+        return getComponentName(type.type);
+
+      case REACT_BLOCK_TYPE:
+        return getComponentName(type.render);
+
+      case REACT_LAZY_TYPE:
+        {
+          var thenable = type;
+          var resolvedThenable = refineResolvedLazyComponent(thenable);
+
+          if (resolvedThenable) {
+            return getComponentName(resolvedThenable);
+          }
+
+          break;
+        }
+    }
+  }
+
+  return null;
+}
+
+var ReactDebugCurrentFrame = {};
+var currentlyValidatingElement = null;
+function setCurrentlyValidatingElement(element) {
+  {
+    currentlyValidatingElement = element;
+  }
+}
+
+{
+  // Stack implementation injected by the current renderer.
+  ReactDebugCurrentFrame.getCurrentStack = null;
+
+  ReactDebugCurrentFrame.getStackAddendum = function () {
+    var stack = ''; // Add an extra top frame while an element is being validated
+
+    if (currentlyValidatingElement) {
+      var name = getComponentName(currentlyValidatingElement.type);
+      var owner = currentlyValidatingElement._owner;
+      stack += describeComponentFrame(name, currentlyValidatingElement._source, owner && getComponentName(owner.type));
+    } // Delegate to the injected renderer-specific implementation
+
+
+    var impl = ReactDebugCurrentFrame.getCurrentStack;
+
+    if (impl) {
+      stack += impl() || '';
+    }
+
+    return stack;
+  };
+}
+
+/**
+ * Used by act() to track whether you're inside an act() scope.
+ */
+var IsSomeRendererActing = {
+  current: false
+};
+
+var ReactSharedInternals = {
+  ReactCurrentDispatcher: ReactCurrentDispatcher,
+  ReactCurrentBatchConfig: ReactCurrentBatchConfig,
+  ReactCurrentOwner: ReactCurrentOwner,
+  IsSomeRendererActing: IsSomeRendererActing,
+  // Used by renderers to avoid bundling object-assign twice in UMD bundles:
+  assign: _assign
+};
+
+{
+  _assign(ReactSharedInternals, {
+    // These should not be included in production.
+    ReactDebugCurrentFrame: ReactDebugCurrentFrame,
+    // Shim for React DOM 16.0.0 which still destructured (but not used) this.
+    // TODO: remove in React 17.0.
+    ReactComponentTreeHook: {}
+  });
+}
+
+// by calls to these methods by a Babel plugin.
+//
+// In PROD (or in packages without access to React internals),
+// they are left as they are instead.
+
+function warn(format) {
+  {
+    for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+      args[_key - 1] = arguments[_key];
+    }
+
+    printWarning('warn', format, args);
+  }
+}
+function error(format) {
+  {
+    for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+      args[_key2 - 1] = arguments[_key2];
+    }
+
+    printWarning('error', format, args);
+  }
+}
+
+function printWarning(level, format, args) {
+  // When changing this logic, you might want to also
+  // update consoleWithStackDev.www.js as well.
+  {
+    var hasExistingStack = args.length > 0 && typeof args[args.length - 1] === 'string' && args[args.length - 1].indexOf('\n    in') === 0;
+
+    if (!hasExistingStack) {
+      var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+      var stack = ReactDebugCurrentFrame.getStackAddendum();
+
+      if (stack !== '') {
+        format += '%s';
+        args = args.concat([stack]);
+      }
+    }
+
+    var argsWithFormat = args.map(function (item) {
+      return '' + item;
+    }); // Careful: RN currently depends on this prefix
+
+    argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it
+    // breaks IE9: https://github.com/facebook/react/issues/13610
+    // eslint-disable-next-line react-internal/no-production-logging
+
+    Function.prototype.apply.call(console[level], console, argsWithFormat);
+
+    try {
+      // --- Welcome to debugging React ---
+      // This error was thrown as a convenience so that you can use this stack
+      // to find the callsite that caused this warning to fire.
+      var argIndex = 0;
+      var message = 'Warning: ' + format.replace(/%s/g, function () {
+        return args[argIndex++];
+      });
+      throw new Error(message);
+    } catch (x) {}
+  }
+}
+
+var didWarnStateUpdateForUnmountedComponent = {};
+
+function warnNoop(publicInstance, callerName) {
+  {
+    var _constructor = publicInstance.constructor;
+    var componentName = _constructor && (_constructor.displayName || _constructor.name) || 'ReactClass';
+    var warningKey = componentName + "." + callerName;
+
+    if (didWarnStateUpdateForUnmountedComponent[warningKey]) {
+      return;
+    }
+
+    error("Can't call %s on a component that is not yet mounted. " + 'This is a no-op, but it might indicate a bug in your application. ' + 'Instead, assign to `this.state` directly or define a `state = {};` ' + 'class property with the desired state in the %s component.', callerName, componentName);
+
+    didWarnStateUpdateForUnmountedComponent[warningKey] = true;
+  }
+}
+/**
+ * This is the abstract API for an update queue.
+ */
+
+
+var ReactNoopUpdateQueue = {
+  /**
+   * Checks whether or not this composite component is mounted.
+   * @param {ReactClass} publicInstance The instance we want to test.
+   * @return {boolean} True if mounted, false otherwise.
+   * @protected
+   * @final
+   */
+  isMounted: function (publicInstance) {
+    return false;
+  },
+
+  /**
+   * Forces an update. This should only be invoked when it is known with
+   * certainty that we are **not** in a DOM transaction.
+   *
+   * You may want to call this when you know that some deeper aspect of the
+   * component's state has changed but `setState` was not called.
+   *
+   * This will not invoke `shouldComponentUpdate`, but it will invoke
+   * `componentWillUpdate` and `componentDidUpdate`.
+   *
+   * @param {ReactClass} publicInstance The instance that should rerender.
+   * @param {?function} callback Called after component is updated.
+   * @param {?string} callerName name of the calling function in the public API.
+   * @internal
+   */
+  enqueueForceUpdate: function (publicInstance, callback, callerName) {
+    warnNoop(publicInstance, 'forceUpdate');
+  },
+
+  /**
+   * Replaces all of the state. Always use this or `setState` to mutate state.
+   * You should treat `this.state` as immutable.
+   *
+   * There is no guarantee that `this.state` will be immediately updated, so
+   * accessing `this.state` after calling this method may return the old value.
+   *
+   * @param {ReactClass} publicInstance The instance that should rerender.
+   * @param {object} completeState Next state.
+   * @param {?function} callback Called after component is updated.
+   * @param {?string} callerName name of the calling function in the public API.
+   * @internal
+   */
+  enqueueReplaceState: function (publicInstance, completeState, callback, callerName) {
+    warnNoop(publicInstance, 'replaceState');
+  },
+
+  /**
+   * Sets a subset of the state. This only exists because _pendingState is
+   * internal. This provides a merging strategy that is not available to deep
+   * properties which is confusing. TODO: Expose pendingState or don't use it
+   * during the merge.
+   *
+   * @param {ReactClass} publicInstance The instance that should rerender.
+   * @param {object} partialState Next partial state to be merged with state.
+   * @param {?function} callback Called after component is updated.
+   * @param {?string} Name of the calling function in the public API.
+   * @internal
+   */
+  enqueueSetState: function (publicInstance, partialState, callback, callerName) {
+    warnNoop(publicInstance, 'setState');
+  }
+};
+
+var emptyObject = {};
+
+{
+  Object.freeze(emptyObject);
+}
+/**
+ * Base class helpers for the updating state of a component.
+ */
+
+
+function Component(props, context, updater) {
+  this.props = props;
+  this.context = context; // If a component has string refs, we will assign a different object later.
+
+  this.refs = emptyObject; // We initialize the default updater but the real one gets injected by the
+  // renderer.
+
+  this.updater = updater || ReactNoopUpdateQueue;
+}
+
+Component.prototype.isReactComponent = {};
+/**
+ * Sets a subset of the state. Always use this to mutate
+ * state. You should treat `this.state` as immutable.
+ *
+ * There is no guarantee that `this.state` will be immediately updated, so
+ * accessing `this.state` after calling this method may return the old value.
+ *
+ * There is no guarantee that calls to `setState` will run synchronously,
+ * as they may eventually be batched together.  You can provide an optional
+ * callback that will be executed when the call to setState is actually
+ * completed.
+ *
+ * When a function is provided to setState, it will be called at some point in
+ * the future (not synchronously). It will be called with the up to date
+ * component arguments (state, props, context). These values can be different
+ * from this.* because your function may be called after receiveProps but before
+ * shouldComponentUpdate, and this new state, props, and context will not yet be
+ * assigned to this.
+ *
+ * @param {object|function} partialState Next partial state or function to
+ *        produce next partial state to be merged with current state.
+ * @param {?function} callback Called after state is updated.
+ * @final
+ * @protected
+ */
+
+Component.prototype.setState = function (partialState, callback) {
+  if (!(typeof partialState === 'object' || typeof partialState === 'function' || partialState == null)) {
+    {
+      throw Error( "setState(...): takes an object of state variables to update or a function which returns an object of state variables." );
+    }
+  }
+
+  this.updater.enqueueSetState(this, partialState, callback, 'setState');
+};
+/**
+ * Forces an update. This should only be invoked when it is known with
+ * certainty that we are **not** in a DOM transaction.
+ *
+ * You may want to call this when you know that some deeper aspect of the
+ * component's state has changed but `setState` was not called.
+ *
+ * This will not invoke `shouldComponentUpdate`, but it will invoke
+ * `componentWillUpdate` and `componentDidUpdate`.
+ *
+ * @param {?function} callback Called after update is complete.
+ * @final
+ * @protected
+ */
+
+
+Component.prototype.forceUpdate = function (callback) {
+  this.updater.enqueueForceUpdate(this, callback, 'forceUpdate');
+};
+/**
+ * Deprecated APIs. These APIs used to exist on classic React classes but since
+ * we would like to deprecate them, we're not going to move them over to this
+ * modern base class. Instead, we define a getter that warns if it's accessed.
+ */
+
+
+{
+  var deprecatedAPIs = {
+    isMounted: ['isMounted', 'Instead, make sure to clean up subscriptions and pending requests in ' + 'componentWillUnmount to prevent memory leaks.'],
+    replaceState: ['replaceState', 'Refactor your code to use setState instead (see ' + 'https://github.com/facebook/react/issues/3236).']
+  };
+
+  var defineDeprecationWarning = function (methodName, info) {
+    Object.defineProperty(Component.prototype, methodName, {
+      get: function () {
+        warn('%s(...) is deprecated in plain JavaScript React classes. %s', info[0], info[1]);
+
+        return undefined;
+      }
+    });
+  };
+
+  for (var fnName in deprecatedAPIs) {
+    if (deprecatedAPIs.hasOwnProperty(fnName)) {
+      defineDeprecationWarning(fnName, deprecatedAPIs[fnName]);
+    }
+  }
+}
+
+function ComponentDummy() {}
+
+ComponentDummy.prototype = Component.prototype;
+/**
+ * Convenience component with default shallow equality check for sCU.
+ */
+
+function PureComponent(props, context, updater) {
+  this.props = props;
+  this.context = context; // If a component has string refs, we will assign a different object later.
+
+  this.refs = emptyObject;
+  this.updater = updater || ReactNoopUpdateQueue;
+}
+
+var pureComponentPrototype = PureComponent.prototype = new ComponentDummy();
+pureComponentPrototype.constructor = PureComponent; // Avoid an extra prototype jump for these methods.
+
+_assign(pureComponentPrototype, Component.prototype);
+
+pureComponentPrototype.isPureReactComponent = true;
+
+// an immutable object with a single mutable value
+function createRef() {
+  var refObject = {
+    current: null
+  };
+
+  {
+    Object.seal(refObject);
+  }
+
+  return refObject;
+}
+
+var hasOwnProperty = Object.prototype.hasOwnProperty;
+var RESERVED_PROPS = {
+  key: true,
+  ref: true,
+  __self: true,
+  __source: true
+};
+var specialPropKeyWarningShown, specialPropRefWarningShown, didWarnAboutStringRefs;
+
+{
+  didWarnAboutStringRefs = {};
+}
+
+function hasValidRef(config) {
+  {
+    if (hasOwnProperty.call(config, 'ref')) {
+      var getter = Object.getOwnPropertyDescriptor(config, 'ref').get;
+
+      if (getter && getter.isReactWarning) {
+        return false;
+      }
+    }
+  }
+
+  return config.ref !== undefined;
+}
+
+function hasValidKey(config) {
+  {
+    if (hasOwnProperty.call(config, 'key')) {
+      var getter = Object.getOwnPropertyDescriptor(config, 'key').get;
+
+      if (getter && getter.isReactWarning) {
+        return false;
+      }
+    }
+  }
+
+  return config.key !== undefined;
+}
+
+function defineKeyPropWarningGetter(props, displayName) {
+  var warnAboutAccessingKey = function () {
+    {
+      if (!specialPropKeyWarningShown) {
+        specialPropKeyWarningShown = true;
+
+        error('%s: `key` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https://fb.me/react-special-props)', displayName);
+      }
+    }
+  };
+
+  warnAboutAccessingKey.isReactWarning = true;
+  Object.defineProperty(props, 'key', {
+    get: warnAboutAccessingKey,
+    configurable: true
+  });
+}
+
+function defineRefPropWarningGetter(props, displayName) {
+  var warnAboutAccessingRef = function () {
+    {
+      if (!specialPropRefWarningShown) {
+        specialPropRefWarningShown = true;
+
+        error('%s: `ref` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https://fb.me/react-special-props)', displayName);
+      }
+    }
+  };
+
+  warnAboutAccessingRef.isReactWarning = true;
+  Object.defineProperty(props, 'ref', {
+    get: warnAboutAccessingRef,
+    configurable: true
+  });
+}
+
+function warnIfStringRefCannotBeAutoConverted(config) {
+  {
+    if (typeof config.ref === 'string' && ReactCurrentOwner.current && config.__self && ReactCurrentOwner.current.stateNode !== config.__self) {
+      var componentName = getComponentName(ReactCurrentOwner.current.type);
+
+      if (!didWarnAboutStringRefs[componentName]) {
+        error('Component "%s" contains the string ref "%s". ' + 'Support for string refs will be removed in a future major release. ' + 'This case cannot be automatically converted to an arrow function. ' + 'We ask you to manually fix this case by using useRef() or createRef() instead. ' + 'Learn more about using refs safely here: ' + 'https://fb.me/react-strict-mode-string-ref', getComponentName(ReactCurrentOwner.current.type), config.ref);
+
+        didWarnAboutStringRefs[componentName] = true;
+      }
+    }
+  }
+}
+/**
+ * Factory method to create a new React element. This no longer adheres to
+ * the class pattern, so do not use new to call it. Also, instanceof check
+ * will not work. Instead test $$typeof field against Symbol.for('react.element') to check
+ * if something is a React Element.
+ *
+ * @param {*} type
+ * @param {*} props
+ * @param {*} key
+ * @param {string|object} ref
+ * @param {*} owner
+ * @param {*} self A *temporary* helper to detect places where `this` is
+ * different from the `owner` when React.createElement is called, so that we
+ * can warn. We want to get rid of owner and replace string `ref`s with arrow
+ * functions, and as long as `this` and owner are the same, there will be no
+ * change in behavior.
+ * @param {*} source An annotation object (added by a transpiler or otherwise)
+ * indicating filename, line number, and/or other information.
+ * @internal
+ */
+
+
+var ReactElement = function (type, key, ref, self, source, owner, props) {
+  var element = {
+    // This tag allows us to uniquely identify this as a React Element
+    $$typeof: REACT_ELEMENT_TYPE,
+    // Built-in properties that belong on the element
+    type: type,
+    key: key,
+    ref: ref,
+    props: props,
+    // Record the component responsible for creating this element.
+    _owner: owner
+  };
+
+  {
+    // The validation flag is currently mutative. We put it on
+    // an external backing store so that we can freeze the whole object.
+    // This can be replaced with a WeakMap once they are implemented in
+    // commonly used development environments.
+    element._store = {}; // To make comparing ReactElements easier for testing purposes, we make
+    // the validation flag non-enumerable (where possible, which should
+    // include every environment we run tests in), so the test framework
+    // ignores it.
+
+    Object.defineProperty(element._store, 'validated', {
+      configurable: false,
+      enumerable: false,
+      writable: true,
+      value: false
+    }); // self and source are DEV only properties.
+
+    Object.defineProperty(element, '_self', {
+      configurable: false,
+      enumerable: false,
+      writable: false,
+      value: self
+    }); // Two elements created in two different places should be considered
+    // equal for testing purposes and therefore we hide it from enumeration.
+
+    Object.defineProperty(element, '_source', {
+      configurable: false,
+      enumerable: false,
+      writable: false,
+      value: source
+    });
+
+    if (Object.freeze) {
+      Object.freeze(element.props);
+      Object.freeze(element);
+    }
+  }
+
+  return element;
+};
+/**
+ * Create and return a new ReactElement of the given type.
+ * See https://reactjs.org/docs/react-api.html#createelement
+ */
+
+function createElement(type, config, children) {
+  var propName; // Reserved names are extracted
+
+  var props = {};
+  var key = null;
+  var ref = null;
+  var self = null;
+  var source = null;
+
+  if (config != null) {
+    if (hasValidRef(config)) {
+      ref = config.ref;
+
+      {
+        warnIfStringRefCannotBeAutoConverted(config);
+      }
+    }
+
+    if (hasValidKey(config)) {
+      key = '' + config.key;
+    }
+
+    self = config.__self === undefined ? null : config.__self;
+    source = config.__source === undefined ? null : config.__source; // Remaining properties are added to a new props object
+
+    for (propName in config) {
+      if (hasOwnProperty.call(config, propName) && !RESERVED_PROPS.hasOwnProperty(propName)) {
+        props[propName] = config[propName];
+      }
+    }
+  } // Children can be more than one argument, and those are transferred onto
+  // the newly allocated props object.
+
+
+  var childrenLength = arguments.length - 2;
+
+  if (childrenLength === 1) {
+    props.children = children;
+  } else if (childrenLength > 1) {
+    var childArray = Array(childrenLength);
+
+    for (var i = 0; i < childrenLength; i++) {
+      childArray[i] = arguments[i + 2];
+    }
+
+    {
+      if (Object.freeze) {
+        Object.freeze(childArray);
+      }
+    }
+
+    props.children = childArray;
+  } // Resolve default props
+
+
+  if (type && type.defaultProps) {
+    var defaultProps = type.defaultProps;
+
+    for (propName in defaultProps) {
+      if (props[propName] === undefined) {
+        props[propName] = defaultProps[propName];
+      }
+    }
+  }
+
+  {
+    if (key || ref) {
+      var displayName = typeof type === 'function' ? type.displayName || type.name || 'Unknown' : type;
+
+      if (key) {
+        defineKeyPropWarningGetter(props, displayName);
+      }
+
+      if (ref) {
+        defineRefPropWarningGetter(props, displayName);
+      }
+    }
+  }
+
+  return ReactElement(type, key, ref, self, source, ReactCurrentOwner.current, props);
+}
+function cloneAndReplaceKey(oldElement, newKey) {
+  var newElement = ReactElement(oldElement.type, newKey, oldElement.ref, oldElement._self, oldElement._source, oldElement._owner, oldElement.props);
+  return newElement;
+}
+/**
+ * Clone and return a new ReactElement using element as the starting point.
+ * See https://reactjs.org/docs/react-api.html#cloneelement
+ */
+
+function cloneElement(element, config, children) {
+  if (!!(element === null || element === undefined)) {
+    {
+      throw Error( "React.cloneElement(...): The argument must be a React element, but you passed " + element + "." );
+    }
+  }
+
+  var propName; // Original props are copied
+
+  var props = _assign({}, element.props); // Reserved names are extracted
+
+
+  var key = element.key;
+  var ref = element.ref; // Self is preserved since the owner is preserved.
+
+  var self = element._self; // Source is preserved since cloneElement is unlikely to be targeted by a
+  // transpiler, and the original source is probably a better indicator of the
+  // true owner.
+
+  var source = element._source; // Owner will be preserved, unless ref is overridden
+
+  var owner = element._owner;
+
+  if (config != null) {
+    if (hasValidRef(config)) {
+      // Silently steal the ref from the parent.
+      ref = config.ref;
+      owner = ReactCurrentOwner.current;
+    }
+
+    if (hasValidKey(config)) {
+      key = '' + config.key;
+    } // Remaining properties override existing props
+
+
+    var defaultProps;
+
+    if (element.type && element.type.defaultProps) {
+      defaultProps = element.type.defaultProps;
+    }
+
+    for (propName in config) {
+      if (hasOwnProperty.call(config, propName) && !RESERVED_PROPS.hasOwnProperty(propName)) {
+        if (config[propName] === undefined && defaultProps !== undefined) {
+          // Resolve default props
+          props[propName] = defaultProps[propName];
+        } else {
+          props[propName] = config[propName];
+        }
+      }
+    }
+  } // Children can be more than one argument, and those are transferred onto
+  // the newly allocated props object.
+
+
+  var childrenLength = arguments.length - 2;
+
+  if (childrenLength === 1) {
+    props.children = children;
+  } else if (childrenLength > 1) {
+    var childArray = Array(childrenLength);
+
+    for (var i = 0; i < childrenLength; i++) {
+      childArray[i] = arguments[i + 2];
+    }
+
+    props.children = childArray;
+  }
+
+  return ReactElement(element.type, key, ref, self, source, owner, props);
+}
+/**
+ * Verifies the object is a ReactElement.
+ * See https://reactjs.org/docs/react-api.html#isvalidelement
+ * @param {?object} object
+ * @return {boolean} True if `object` is a ReactElement.
+ * @final
+ */
+
+function isValidElement(object) {
+  return typeof object === 'object' && object !== null && object.$$typeof === REACT_ELEMENT_TYPE;
+}
+
+var SEPARATOR = '.';
+var SUBSEPARATOR = ':';
+/**
+ * Escape and wrap key so it is safe to use as a reactid
+ *
+ * @param {string} key to be escaped.
+ * @return {string} the escaped key.
+ */
+
+function escape(key) {
+  var escapeRegex = /[=:]/g;
+  var escaperLookup = {
+    '=': '=0',
+    ':': '=2'
+  };
+  var escapedString = ('' + key).replace(escapeRegex, function (match) {
+    return escaperLookup[match];
+  });
+  return '$' + escapedString;
+}
+/**
+ * TODO: Test that a single child and an array with one item have the same key
+ * pattern.
+ */
+
+
+var didWarnAboutMaps = false;
+var userProvidedKeyEscapeRegex = /\/+/g;
+
+function escapeUserProvidedKey(text) {
+  return ('' + text).replace(userProvidedKeyEscapeRegex, '$&/');
+}
+
+var POOL_SIZE = 10;
+var traverseContextPool = [];
+
+function getPooledTraverseContext(mapResult, keyPrefix, mapFunction, mapContext) {
+  if (traverseContextPool.length) {
+    var traverseContext = traverseContextPool.pop();
+    traverseContext.result = mapResult;
+    traverseContext.keyPrefix = keyPrefix;
+    traverseContext.func = mapFunction;
+    traverseContext.context = mapContext;
+    traverseContext.count = 0;
+    return traverseContext;
+  } else {
+    return {
+      result: mapResult,
+      keyPrefix: keyPrefix,
+      func: mapFunction,
+      context: mapContext,
+      count: 0
+    };
+  }
+}
+
+function releaseTraverseContext(traverseContext) {
+  traverseContext.result = null;
+  traverseContext.keyPrefix = null;
+  traverseContext.func = null;
+  traverseContext.context = null;
+  traverseContext.count = 0;
+
+  if (traverseContextPool.length < POOL_SIZE) {
+    traverseContextPool.push(traverseContext);
+  }
+}
+/**
+ * @param {?*} children Children tree container.
+ * @param {!string} nameSoFar Name of the key path so far.
+ * @param {!function} callback Callback to invoke with each child found.
+ * @param {?*} traverseContext Used to pass information throughout the traversal
+ * process.
+ * @return {!number} The number of children in this subtree.
+ */
+
+
+function traverseAllChildrenImpl(children, nameSoFar, callback, traverseContext) {
+  var type = typeof children;
+
+  if (type === 'undefined' || type === 'boolean') {
+    // All of the above are perceived as null.
+    children = null;
+  }
+
+  var invokeCallback = false;
+
+  if (children === null) {
+    invokeCallback = true;
+  } else {
+    switch (type) {
+      case 'string':
+      case 'number':
+        invokeCallback = true;
+        break;
+
+      case 'object':
+        switch (children.$$typeof) {
+          case REACT_ELEMENT_TYPE:
+          case REACT_PORTAL_TYPE:
+            invokeCallback = true;
+        }
+
+    }
+  }
+
+  if (invokeCallback) {
+    callback(traverseContext, children, // If it's the only child, treat the name as if it was wrapped in an array
+    // so that it's consistent if the number of children grows.
+    nameSoFar === '' ? SEPARATOR + getComponentKey(children, 0) : nameSoFar);
+    return 1;
+  }
+
+  var child;
+  var nextName;
+  var subtreeCount = 0; // Count of children found in the current subtree.
+
+  var nextNamePrefix = nameSoFar === '' ? SEPARATOR : nameSoFar + SUBSEPARATOR;
+
+  if (Array.isArray(children)) {
+    for (var i = 0; i < children.length; i++) {
+      child = children[i];
+      nextName = nextNamePrefix + getComponentKey(child, i);
+      subtreeCount += traverseAllChildrenImpl(child, nextName, callback, traverseContext);
+    }
+  } else {
+    var iteratorFn = getIteratorFn(children);
+
+    if (typeof iteratorFn === 'function') {
+
+      {
+        // Warn about using Maps as children
+        if (iteratorFn === children.entries) {
+          if (!didWarnAboutMaps) {
+            warn('Using Maps as children is deprecated and will be removed in ' + 'a future major release. Consider converting children to ' + 'an array of keyed ReactElements instead.');
+          }
+
+          didWarnAboutMaps = true;
+        }
+      }
+
+      var iterator = iteratorFn.call(children);
+      var step;
+      var ii = 0;
+
+      while (!(step = iterator.next()).done) {
+        child = step.value;
+        nextName = nextNamePrefix + getComponentKey(child, ii++);
+        subtreeCount += traverseAllChildrenImpl(child, nextName, callback, traverseContext);
+      }
+    } else if (type === 'object') {
+      var addendum = '';
+
+      {
+        addendum = ' If you meant to render a collection of children, use an array ' + 'instead.' + ReactDebugCurrentFrame.getStackAddendum();
+      }
+
+      var childrenString = '' + children;
+
+      {
+        {
+          throw Error( "Objects are not valid as a React child (found: " + (childrenString === '[object Object]' ? 'object with keys {' + Object.keys(children).join(', ') + '}' : childrenString) + ")." + addendum );
+        }
+      }
+    }
+  }
+
+  return subtreeCount;
+}
+/**
+ * Traverses children that are typically specified as `props.children`, but
+ * might also be specified through attributes:
+ *
+ * - `traverseAllChildren(this.props.children, ...)`
+ * - `traverseAllChildren(this.props.leftPanelChildren, ...)`
+ *
+ * The `traverseContext` is an optional argument that is passed through the
+ * entire traversal. It can be used to store accumulations or anything else that
+ * the callback might find relevant.
+ *
+ * @param {?*} children Children tree object.
+ * @param {!function} callback To invoke upon traversing each child.
+ * @param {?*} traverseContext Context for traversal.
+ * @return {!number} The number of children in this subtree.
+ */
+
+
+function traverseAllChildren(children, callback, traverseContext) {
+  if (children == null) {
+    return 0;
+  }
+
+  return traverseAllChildrenImpl(children, '', callback, traverseContext);
+}
+/**
+ * Generate a key string that identifies a component within a set.
+ *
+ * @param {*} component A component that could contain a manual key.
+ * @param {number} index Index that is used if a manual key is not provided.
+ * @return {string}
+ */
+
+
+function getComponentKey(component, index) {
+  // Do some typechecking here since we call this blindly. We want to ensure
+  // that we don't block potential future ES APIs.
+  if (typeof component === 'object' && component !== null && component.key != null) {
+    // Explicit key
+    return escape(component.key);
+  } // Implicit key determined by the index in the set
+
+
+  return index.toString(36);
+}
+
+function forEachSingleChild(bookKeeping, child, name) {
+  var func = bookKeeping.func,
+      context = bookKeeping.context;
+  func.call(context, child, bookKeeping.count++);
+}
+/**
+ * Iterates through children that are typically specified as `props.children`.
+ *
+ * See https://reactjs.org/docs/react-api.html#reactchildrenforeach
+ *
+ * The provided forEachFunc(child, index) will be called for each
+ * leaf child.
+ *
+ * @param {?*} children Children tree container.
+ * @param {function(*, int)} forEachFunc
+ * @param {*} forEachContext Context for forEachContext.
+ */
+
+
+function forEachChildren(children, forEachFunc, forEachContext) {
+  if (children == null) {
+    return children;
+  }
+
+  var traverseContext = getPooledTraverseContext(null, null, forEachFunc, forEachContext);
+  traverseAllChildren(children, forEachSingleChild, traverseContext);
+  releaseTraverseContext(traverseContext);
+}
+
+function mapSingleChildIntoContext(bookKeeping, child, childKey) {
+  var result = bookKeeping.result,
+      keyPrefix = bookKeeping.keyPrefix,
+      func = bookKeeping.func,
+      context = bookKeeping.context;
+  var mappedChild = func.call(context, child, bookKeeping.count++);
+
+  if (Array.isArray(mappedChild)) {
+    mapIntoWithKeyPrefixInternal(mappedChild, result, childKey, function (c) {
+      return c;
+    });
+  } else if (mappedChild != null) {
+    if (isValidElement(mappedChild)) {
+      mappedChild = cloneAndReplaceKey(mappedChild, // Keep both the (mapped) and old keys if they differ, just as
+      // traverseAllChildren used to do for objects as children
+      keyPrefix + (mappedChild.key && (!child || child.key !== mappedChild.key) ? escapeUserProvidedKey(mappedChild.key) + '/' : '') + childKey);
+    }
+
+    result.push(mappedChild);
+  }
+}
+
+function mapIntoWithKeyPrefixInternal(children, array, prefix, func, context) {
+  var escapedPrefix = '';
+
+  if (prefix != null) {
+    escapedPrefix = escapeUserProvidedKey(prefix) + '/';
+  }
+
+  var traverseContext = getPooledTraverseContext(array, escapedPrefix, func, context);
+  traverseAllChildren(children, mapSingleChildIntoContext, traverseContext);
+  releaseTraverseContext(traverseContext);
+}
+/**
+ * Maps children that are typically specified as `props.children`.
+ *
+ * See https://reactjs.org/docs/react-api.html#reactchildrenmap
+ *
+ * The provided mapFunction(child, key, index) will be called for each
+ * leaf child.
+ *
+ * @param {?*} children Children tree container.
+ * @param {function(*, int)} func The map function.
+ * @param {*} context Context for mapFunction.
+ * @return {object} Object containing the ordered map of results.
+ */
+
+
+function mapChildren(children, func, context) {
+  if (children == null) {
+    return children;
+  }
+
+  var result = [];
+  mapIntoWithKeyPrefixInternal(children, result, null, func, context);
+  return result;
+}
+/**
+ * Count the number of children that are typically specified as
+ * `props.children`.
+ *
+ * See https://reactjs.org/docs/react-api.html#reactchildrencount
+ *
+ * @param {?*} children Children tree container.
+ * @return {number} The number of children.
+ */
+
+
+function countChildren(children) {
+  return traverseAllChildren(children, function () {
+    return null;
+  }, null);
+}
+/**
+ * Flatten a children object (typically specified as `props.children`) and
+ * return an array with appropriately re-keyed children.
+ *
+ * See https://reactjs.org/docs/react-api.html#reactchildrentoarray
+ */
+
+
+function toArray(children) {
+  var result = [];
+  mapIntoWithKeyPrefixInternal(children, result, null, function (child) {
+    return child;
+  });
+  return result;
+}
+/**
+ * Returns the first child in a collection of children and verifies that there
+ * is only one child in the collection.
+ *
+ * See https://reactjs.org/docs/react-api.html#reactchildrenonly
+ *
+ * The current implementation of this function assumes that a single child gets
+ * passed without a wrapper, but the purpose of this helper function is to
+ * abstract away the particular structure of children.
+ *
+ * @param {?object} children Child collection structure.
+ * @return {ReactElement} The first and only `ReactElement` contained in the
+ * structure.
+ */
+
+
+function onlyChild(children) {
+  if (!isValidElement(children)) {
+    {
+      throw Error( "React.Children.only expected to receive a single React element child." );
+    }
+  }
+
+  return children;
+}
+
+function createContext(defaultValue, calculateChangedBits) {
+  if (calculateChangedBits === undefined) {
+    calculateChangedBits = null;
+  } else {
+    {
+      if (calculateChangedBits !== null && typeof calculateChangedBits !== 'function') {
+        error('createContext: Expected the optional second argument to be a ' + 'function. Instead received: %s', calculateChangedBits);
+      }
+    }
+  }
+
+  var context = {
+    $$typeof: REACT_CONTEXT_TYPE,
+    _calculateChangedBits: calculateChangedBits,
+    // As a workaround to support multiple concurrent renderers, we categorize
+    // some renderers as primary and others as secondary. We only expect
+    // there to be two concurrent renderers at most: React Native (primary) and
+    // Fabric (secondary); React DOM (primary) and React ART (secondary).
+    // Secondary renderers store their context values on separate fields.
+    _currentValue: defaultValue,
+    _currentValue2: defaultValue,
+    // Used to track how many concurrent renderers this context currently
+    // supports within in a single renderer. Such as parallel server rendering.
+    _threadCount: 0,
+    // These are circular
+    Provider: null,
+    Consumer: null
+  };
+  context.Provider = {
+    $$typeof: REACT_PROVIDER_TYPE,
+    _context: context
+  };
+  var hasWarnedAboutUsingNestedContextConsumers = false;
+  var hasWarnedAboutUsingConsumerProvider = false;
+
+  {
+    // A separate object, but proxies back to the original context object for
+    // backwards compatibility. It has a different $$typeof, so we can properly
+    // warn for the incorrect usage of Context as a Consumer.
+    var Consumer = {
+      $$typeof: REACT_CONTEXT_TYPE,
+      _context: context,
+      _calculateChangedBits: context._calculateChangedBits
+    }; // $FlowFixMe: Flow complains about not setting a value, which is intentional here
+
+    Object.defineProperties(Consumer, {
+      Provider: {
+        get: function () {
+          if (!hasWarnedAboutUsingConsumerProvider) {
+            hasWarnedAboutUsingConsumerProvider = true;
+
+            error('Rendering <Context.Consumer.Provider> is not supported and will be removed in ' + 'a future major release. Did you mean to render <Context.Provider> instead?');
+          }
+
+          return context.Provider;
+        },
+        set: function (_Provider) {
+          context.Provider = _Provider;
+        }
+      },
+      _currentValue: {
+        get: function () {
+          return context._currentValue;
+        },
+        set: function (_currentValue) {
+          context._currentValue = _currentValue;
+        }
+      },
+      _currentValue2: {
+        get: function () {
+          return context._currentValue2;
+        },
+        set: function (_currentValue2) {
+          context._currentValue2 = _currentValue2;
+        }
+      },
+      _threadCount: {
+        get: function () {
+          return context._threadCount;
+        },
+        set: function (_threadCount) {
+          context._threadCount = _threadCount;
+        }
+      },
+      Consumer: {
+        get: function () {
+          if (!hasWarnedAboutUsingNestedContextConsumers) {
+            hasWarnedAboutUsingNestedContextConsumers = true;
+
+            error('Rendering <Context.Consumer.Consumer> is not supported and will be removed in ' + 'a future major release. Did you mean to render <Context.Consumer> instead?');
+          }
+
+          return context.Consumer;
+        }
+      }
+    }); // $FlowFixMe: Flow complains about missing properties because it doesn't understand defineProperty
+
+    context.Consumer = Consumer;
+  }
+
+  {
+    context._currentRenderer = null;
+    context._currentRenderer2 = null;
+  }
+
+  return context;
+}
+
+function lazy(ctor) {
+  var lazyType = {
+    $$typeof: REACT_LAZY_TYPE,
+    _ctor: ctor,
+    // React uses these fields to store the result.
+    _status: -1,
+    _result: null
+  };
+
+  {
+    // In production, this would just set it on the object.
+    var defaultProps;
+    var propTypes;
+    Object.defineProperties(lazyType, {
+      defaultProps: {
+        configurable: true,
+        get: function () {
+          return defaultProps;
+        },
+        set: function (newDefaultProps) {
+          error('React.lazy(...): It is not supported to assign `defaultProps` to ' + 'a lazy component import. Either specify them where the component ' + 'is defined, or create a wrapping component around it.');
+
+          defaultProps = newDefaultProps; // Match production behavior more closely:
+
+          Object.defineProperty(lazyType, 'defaultProps', {
+            enumerable: true
+          });
+        }
+      },
+      propTypes: {
+        configurable: true,
+        get: function () {
+          return propTypes;
+        },
+        set: function (newPropTypes) {
+          error('React.lazy(...): It is not supported to assign `propTypes` to ' + 'a lazy component import. Either specify them where the component ' + 'is defined, or create a wrapping component around it.');
+
+          propTypes = newPropTypes; // Match production behavior more closely:
+
+          Object.defineProperty(lazyType, 'propTypes', {
+            enumerable: true
+          });
+        }
+      }
+    });
+  }
+
+  return lazyType;
+}
+
+function forwardRef(render) {
+  {
+    if (render != null && render.$$typeof === REACT_MEMO_TYPE) {
+      error('forwardRef requires a render function but received a `memo` ' + 'component. Instead of forwardRef(memo(...)), use ' + 'memo(forwardRef(...)).');
+    } else if (typeof render !== 'function') {
+      error('forwardRef requires a render function but was given %s.', render === null ? 'null' : typeof render);
+    } else {
+      if (render.length !== 0 && render.length !== 2) {
+        error('forwardRef render functions accept exactly two parameters: props and ref. %s', render.length === 1 ? 'Did you forget to use the ref parameter?' : 'Any additional parameter will be undefined.');
+      }
+    }
+
+    if (render != null) {
+      if (render.defaultProps != null || render.propTypes != null) {
+        error('forwardRef render functions do not support propTypes or defaultProps. ' + 'Did you accidentally pass a React component?');
+      }
+    }
+  }
+
+  return {
+    $$typeof: REACT_FORWARD_REF_TYPE,
+    render: render
+  };
+}
+
+function isValidElementType(type) {
+  return typeof type === 'string' || typeof type === 'function' || // Note: its typeof might be other than 'symbol' or 'number' if it's a polyfill.
+  type === REACT_FRAGMENT_TYPE || type === REACT_CONCURRENT_MODE_TYPE || type === REACT_PROFILER_TYPE || type === REACT_STRICT_MODE_TYPE || type === REACT_SUSPENSE_TYPE || type === REACT_SUSPENSE_LIST_TYPE || typeof type === 'object' && type !== null && (type.$$typeof === REACT_LAZY_TYPE || type.$$typeof === REACT_MEMO_TYPE || type.$$typeof === REACT_PROVIDER_TYPE || type.$$typeof === REACT_CONTEXT_TYPE || type.$$typeof === REACT_FORWARD_REF_TYPE || type.$$typeof === REACT_FUNDAMENTAL_TYPE || type.$$typeof === REACT_RESPONDER_TYPE || type.$$typeof === REACT_SCOPE_TYPE || type.$$typeof === REACT_BLOCK_TYPE);
+}
+
+function memo(type, compare) {
+  {
+    if (!isValidElementType(type)) {
+      error('memo: The first argument must be a component. Instead ' + 'received: %s', type === null ? 'null' : typeof type);
+    }
+  }
+
+  return {
+    $$typeof: REACT_MEMO_TYPE,
+    type: type,
+    compare: compare === undefined ? null : compare
+  };
+}
+
+function resolveDispatcher() {
+  var dispatcher = ReactCurrentDispatcher.current;
+
+  if (!(dispatcher !== null)) {
+    {
+      throw Error( "Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons:\n1. You might have mismatching versions of React and the renderer (such as React DOM)\n2. You might be breaking the Rules of Hooks\n3. You might have more than one copy of React in the same app\nSee https://fb.me/react-invalid-hook-call for tips about how to debug and fix this problem." );
+    }
+  }
+
+  return dispatcher;
+}
+
+function useContext(Context, unstable_observedBits) {
+  var dispatcher = resolveDispatcher();
+
+  {
+    if (unstable_observedBits !== undefined) {
+      error('useContext() second argument is reserved for future ' + 'use in React. Passing it is not supported. ' + 'You passed: %s.%s', unstable_observedBits, typeof unstable_observedBits === 'number' && Array.isArray(arguments[2]) ? '\n\nDid you call array.map(useContext)? ' + 'Calling Hooks inside a loop is not supported. ' + 'Learn more at https://fb.me/rules-of-hooks' : '');
+    } // TODO: add a more generic warning for invalid values.
+
+
+    if (Context._context !== undefined) {
+      var realContext = Context._context; // Don't deduplicate because this legitimately causes bugs
+      // and nobody should be using this in existing code.
+
+      if (realContext.Consumer === Context) {
+        error('Calling useContext(Context.Consumer) is not supported, may cause bugs, and will be ' + 'removed in a future major release. Did you mean to call useContext(Context) instead?');
+      } else if (realContext.Provider === Context) {
+        error('Calling useContext(Context.Provider) is not supported. ' + 'Did you mean to call useContext(Context) instead?');
+      }
+    }
+  }
+
+  return dispatcher.useContext(Context, unstable_observedBits);
+}
+function useState(initialState) {
+  var dispatcher = resolveDispatcher();
+  return dispatcher.useState(initialState);
+}
+function useReducer(reducer, initialArg, init) {
+  var dispatcher = resolveDispatcher();
+  return dispatcher.useReducer(reducer, initialArg, init);
+}
+function useRef(initialValue) {
+  var dispatcher = resolveDispatcher();
+  return dispatcher.useRef(initialValue);
+}
+function useEffect(create, deps) {
+  var dispatcher = resolveDispatcher();
+  return dispatcher.useEffect(create, deps);
+}
+function useLayoutEffect(create, deps) {
+  var dispatcher = resolveDispatcher();
+  return dispatcher.useLayoutEffect(create, deps);
+}
+function useCallback(callback, deps) {
+  var dispatcher = resolveDispatcher();
+  return dispatcher.useCallback(callback, deps);
+}
+function useMemo(create, deps) {
+  var dispatcher = resolveDispatcher();
+  return dispatcher.useMemo(create, deps);
+}
+function useImperativeHandle(ref, create, deps) {
+  var dispatcher = resolveDispatcher();
+  return dispatcher.useImperativeHandle(ref, create, deps);
+}
+function useDebugValue(value, formatterFn) {
+  {
+    var dispatcher = resolveDispatcher();
+    return dispatcher.useDebugValue(value, formatterFn);
+  }
+}
+
+var propTypesMisspellWarningShown;
+
+{
+  propTypesMisspellWarningShown = false;
+}
+
+function getDeclarationErrorAddendum() {
+  if (ReactCurrentOwner.current) {
+    var name = getComponentName(ReactCurrentOwner.current.type);
+
+    if (name) {
+      return '\n\nCheck the render method of `' + name + '`.';
+    }
+  }
+
+  return '';
+}
+
+function getSourceInfoErrorAddendum(source) {
+  if (source !== undefined) {
+    var fileName = source.fileName.replace(/^.*[\\\/]/, '');
+    var lineNumber = source.lineNumber;
+    return '\n\nCheck your code at ' + fileName + ':' + lineNumber + '.';
+  }
+
+  return '';
+}
+
+function getSourceInfoErrorAddendumForProps(elementProps) {
+  if (elementProps !== null && elementProps !== undefined) {
+    return getSourceInfoErrorAddendum(elementProps.__source);
+  }
+
+  return '';
+}
+/**
+ * Warn if there's no key explicitly set on dynamic arrays of children or
+ * object keys are not valid. This allows us to keep track of children between
+ * updates.
+ */
+
+
+var ownerHasKeyUseWarning = {};
+
+function getCurrentComponentErrorInfo(parentType) {
+  var info = getDeclarationErrorAddendum();
+
+  if (!info) {
+    var parentName = typeof parentType === 'string' ? parentType : parentType.displayName || parentType.name;
+
+    if (parentName) {
+      info = "\n\nCheck the top-level render call using <" + parentName + ">.";
+    }
+  }
+
+  return info;
+}
+/**
+ * Warn if the element doesn't have an explicit key assigned to it.
+ * This element is in an array. The array could grow and shrink or be
+ * reordered. All children that haven't already been validated are required to
+ * have a "key" property assigned to it. Error statuses are cached so a warning
+ * will only be shown once.
+ *
+ * @internal
+ * @param {ReactElement} element Element that requires a key.
+ * @param {*} parentType element's parent's type.
+ */
+
+
+function validateExplicitKey(element, parentType) {
+  if (!element._store || element._store.validated || element.key != null) {
+    return;
+  }
+
+  element._store.validated = true;
+  var currentComponentErrorInfo = getCurrentComponentErrorInfo(parentType);
+
+  if (ownerHasKeyUseWarning[currentComponentErrorInfo]) {
+    return;
+  }
+
+  ownerHasKeyUseWarning[currentComponentErrorInfo] = true; // Usually the current owner is the offender, but if it accepts children as a
+  // property, it may be the creator of the child that's responsible for
+  // assigning it a key.
+
+  var childOwner = '';
+
+  if (element && element._owner && element._owner !== ReactCurrentOwner.current) {
+    // Give the component that originally created this child.
+    childOwner = " It was passed a child from " + getComponentName(element._owner.type) + ".";
+  }
+
+  setCurrentlyValidatingElement(element);
+
+  {
+    error('Each child in a list should have a unique "key" prop.' + '%s%s See https://fb.me/react-warning-keys for more information.', currentComponentErrorInfo, childOwner);
+  }
+
+  setCurrentlyValidatingElement(null);
+}
+/**
+ * Ensure that every element either is passed in a static location, in an
+ * array with an explicit keys property defined, or in an object literal
+ * with valid key property.
+ *
+ * @internal
+ * @param {ReactNode} node Statically passed child of any type.
+ * @param {*} parentType node's parent's type.
+ */
+
+
+function validateChildKeys(node, parentType) {
+  if (typeof node !== 'object') {
+    return;
+  }
+
+  if (Array.isArray(node)) {
+    for (var i = 0; i < node.length; i++) {
+      var child = node[i];
+
+      if (isValidElement(child)) {
+        validateExplicitKey(child, parentType);
+      }
+    }
+  } else if (isValidElement(node)) {
+    // This element was passed in a valid location.
+    if (node._store) {
+      node._store.validated = true;
+    }
+  } else if (node) {
+    var iteratorFn = getIteratorFn(node);
+
+    if (typeof iteratorFn === 'function') {
+      // Entry iterators used to provide implicit keys,
+      // but now we print a separate warning for them later.
+      if (iteratorFn !== node.entries) {
+        var iterator = iteratorFn.call(node);
+        var step;
+
+        while (!(step = iterator.next()).done) {
+          if (isValidElement(step.value)) {
+            validateExplicitKey(step.value, parentType);
+          }
+        }
+      }
+    }
+  }
+}
+/**
+ * Given an element, validate that its props follow the propTypes definition,
+ * provided by the type.
+ *
+ * @param {ReactElement} element
+ */
+
+
+function validatePropTypes(element) {
+  {
+    var type = element.type;
+
+    if (type === null || type === undefined || typeof type === 'string') {
+      return;
+    }
+
+    var name = getComponentName(type);
+    var propTypes;
+
+    if (typeof type === 'function') {
+      propTypes = type.propTypes;
+    } else if (typeof type === 'object' && (type.$$typeof === REACT_FORWARD_REF_TYPE || // Note: Memo only checks outer props here.
+    // Inner props are checked in the reconciler.
+    type.$$typeof === REACT_MEMO_TYPE)) {
+      propTypes = type.propTypes;
+    } else {
+      return;
+    }
+
+    if (propTypes) {
+      setCurrentlyValidatingElement(element);
+      checkPropTypes(propTypes, element.props, 'prop', name, ReactDebugCurrentFrame.getStackAddendum);
+      setCurrentlyValidatingElement(null);
+    } else if (type.PropTypes !== undefined && !propTypesMisspellWarningShown) {
+      propTypesMisspellWarningShown = true;
+
+      error('Component %s declared `PropTypes` instead of `propTypes`. Did you misspell the property assignment?', name || 'Unknown');
+    }
+
+    if (typeof type.getDefaultProps === 'function' && !type.getDefaultProps.isReactClassApproved) {
+      error('getDefaultProps is only used on classic React.createClass ' + 'definitions. Use a static property named `defaultProps` instead.');
+    }
+  }
+}
+/**
+ * Given a fragment, validate that it can only be provided with fragment props
+ * @param {ReactElement} fragment
+ */
+
+
+function validateFragmentProps(fragment) {
+  {
+    setCurrentlyValidatingElement(fragment);
+    var keys = Object.keys(fragment.props);
+
+    for (var i = 0; i < keys.length; i++) {
+      var key = keys[i];
+
+      if (key !== 'children' && key !== 'key') {
+        error('Invalid prop `%s` supplied to `React.Fragment`. ' + 'React.Fragment can only have `key` and `children` props.', key);
+
+        break;
+      }
+    }
+
+    if (fragment.ref !== null) {
+      error('Invalid attribute `ref` supplied to `React.Fragment`.');
+    }
+
+    setCurrentlyValidatingElement(null);
+  }
+}
+function createElementWithValidation(type, props, children) {
+  var validType = isValidElementType(type); // We warn in this case but don't throw. We expect the element creation to
+  // succeed and there will likely be errors in render.
+
+  if (!validType) {
+    var info = '';
+
+    if (type === undefined || typeof type === 'object' && type !== null && Object.keys(type).length === 0) {
+      info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and named imports.";
+    }
+
+    var sourceInfo = getSourceInfoErrorAddendumForProps(props);
+
+    if (sourceInfo) {
+      info += sourceInfo;
+    } else {
+      info += getDeclarationErrorAddendum();
+    }
+
+    var typeString;
+
+    if (type === null) {
+      typeString = 'null';
+    } else if (Array.isArray(type)) {
+      typeString = 'array';
+    } else if (type !== undefined && type.$$typeof === REACT_ELEMENT_TYPE) {
+      typeString = "<" + (getComponentName(type.type) || 'Unknown') + " />";
+      info = ' Did you accidentally export a JSX literal instead of a component?';
+    } else {
+      typeString = typeof type;
+    }
+
+    {
+      error('React.createElement: type is invalid -- expected a string (for ' + 'built-in components) or a class/function (for composite ' + 'components) but got: %s.%s', typeString, info);
+    }
+  }
+
+  var element = createElement.apply(this, arguments); // The result can be nullish if a mock or a custom function is used.
+  // TODO: Drop this when these are no longer allowed as the type argument.
+
+  if (element == null) {
+    return element;
+  } // Skip key warning if the type isn't valid since our key validation logic
+  // doesn't expect a non-string/function type and can throw confusing errors.
+  // We don't want exception behavior to differ between dev and prod.
+  // (Rendering will throw with a helpful message and as soon as the type is
+  // fixed, the key warnings will appear.)
+
+
+  if (validType) {
+    for (var i = 2; i < arguments.length; i++) {
+      validateChildKeys(arguments[i], type);
+    }
+  }
+
+  if (type === REACT_FRAGMENT_TYPE) {
+    validateFragmentProps(element);
+  } else {
+    validatePropTypes(element);
+  }
+
+  return element;
+}
+var didWarnAboutDeprecatedCreateFactory = false;
+function createFactoryWithValidation(type) {
+  var validatedFactory = createElementWithValidation.bind(null, type);
+  validatedFactory.type = type;
+
+  {
+    if (!didWarnAboutDeprecatedCreateFactory) {
+      didWarnAboutDeprecatedCreateFactory = true;
+
+      warn('React.createFactory() is deprecated and will be removed in ' + 'a future major release. Consider using JSX ' + 'or use React.createElement() directly instead.');
+    } // Legacy hook: remove it
+
+
+    Object.defineProperty(validatedFactory, 'type', {
+      enumerable: false,
+      get: function () {
+        warn('Factory.type is deprecated. Access the class directly ' + 'before passing it to createFactory.');
+
+        Object.defineProperty(this, 'type', {
+          value: type
+        });
+        return type;
+      }
+    });
+  }
+
+  return validatedFactory;
+}
+function cloneElementWithValidation(element, props, children) {
+  var newElement = cloneElement.apply(this, arguments);
+
+  for (var i = 2; i < arguments.length; i++) {
+    validateChildKeys(arguments[i], newElement.type);
+  }
+
+  validatePropTypes(newElement);
+  return newElement;
+}
+
+{
+
+  try {
+    var frozenObject = Object.freeze({});
+    var testMap = new Map([[frozenObject, null]]);
+    var testSet = new Set([frozenObject]); // This is necessary for Rollup to not consider these unused.
+    // https://github.com/rollup/rollup/issues/1771
+    // TODO: we can remove these if Rollup fixes the bug.
+
+    testMap.set(0, 0);
+    testSet.add(0);
+  } catch (e) {
+  }
+}
+
+var createElement$1 =  createElementWithValidation ;
+var cloneElement$1 =  cloneElementWithValidation ;
+var createFactory =  createFactoryWithValidation ;
+var Children = {
+  map: mapChildren,
+  forEach: forEachChildren,
+  count: countChildren,
+  toArray: toArray,
+  only: onlyChild
+};
+
+exports.Children = Children;
+exports.Component = Component;
+exports.Fragment = REACT_FRAGMENT_TYPE;
+exports.Profiler = REACT_PROFILER_TYPE;
+exports.PureComponent = PureComponent;
+exports.StrictMode = REACT_STRICT_MODE_TYPE;
+exports.Suspense = REACT_SUSPENSE_TYPE;
+exports.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED = ReactSharedInternals;
+exports.cloneElement = cloneElement$1;
+exports.createContext = createContext;
+exports.createElement = createElement$1;
+exports.createFactory = createFactory;
+exports.createRef = createRef;
+exports.forwardRef = forwardRef;
+exports.isValidElement = isValidElement;
+exports.lazy = lazy;
+exports.memo = memo;
+exports.useCallback = useCallback;
+exports.useContext = useContext;
+exports.useDebugValue = useDebugValue;
+exports.useEffect = useEffect;
+exports.useImperativeHandle = useImperativeHandle;
+exports.useLayoutEffect = useLayoutEffect;
+exports.useMemo = useMemo;
+exports.useReducer = useReducer;
+exports.useRef = useRef;
+exports.useState = useState;
+exports.version = ReactVersion;
+  })();
+}
diff --git a/igv_component/node_modules/react/cjs/react.production.min.js b/igv_component/node_modules/react/cjs/react.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..6373ad0b628230636033c83c56ba37e07f67da77
--- /dev/null
+++ b/igv_component/node_modules/react/cjs/react.production.min.js
@@ -0,0 +1,25 @@
+/** @license React v16.14.0
+ * react.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';var l=require("object-assign"),n="function"===typeof Symbol&&Symbol.for,p=n?Symbol.for("react.element"):60103,q=n?Symbol.for("react.portal"):60106,r=n?Symbol.for("react.fragment"):60107,t=n?Symbol.for("react.strict_mode"):60108,u=n?Symbol.for("react.profiler"):60114,v=n?Symbol.for("react.provider"):60109,w=n?Symbol.for("react.context"):60110,x=n?Symbol.for("react.forward_ref"):60112,y=n?Symbol.for("react.suspense"):60113,z=n?Symbol.for("react.memo"):60115,A=n?Symbol.for("react.lazy"):
+60116,B="function"===typeof Symbol&&Symbol.iterator;function C(a){for(var b="https://reactjs.org/docs/error-decoder.html?invariant="+a,c=1;c<arguments.length;c++)b+="&args[]="+encodeURIComponent(arguments[c]);return"Minified React error #"+a+"; visit "+b+" for the full message or use the non-minified dev environment for full errors and additional helpful warnings."}
+var D={isMounted:function(){return!1},enqueueForceUpdate:function(){},enqueueReplaceState:function(){},enqueueSetState:function(){}},E={};function F(a,b,c){this.props=a;this.context=b;this.refs=E;this.updater=c||D}F.prototype.isReactComponent={};F.prototype.setState=function(a,b){if("object"!==typeof a&&"function"!==typeof a&&null!=a)throw Error(C(85));this.updater.enqueueSetState(this,a,b,"setState")};F.prototype.forceUpdate=function(a){this.updater.enqueueForceUpdate(this,a,"forceUpdate")};
+function G(){}G.prototype=F.prototype;function H(a,b,c){this.props=a;this.context=b;this.refs=E;this.updater=c||D}var I=H.prototype=new G;I.constructor=H;l(I,F.prototype);I.isPureReactComponent=!0;var J={current:null},K=Object.prototype.hasOwnProperty,L={key:!0,ref:!0,__self:!0,__source:!0};
+function M(a,b,c){var e,d={},g=null,k=null;if(null!=b)for(e in void 0!==b.ref&&(k=b.ref),void 0!==b.key&&(g=""+b.key),b)K.call(b,e)&&!L.hasOwnProperty(e)&&(d[e]=b[e]);var f=arguments.length-2;if(1===f)d.children=c;else if(1<f){for(var h=Array(f),m=0;m<f;m++)h[m]=arguments[m+2];d.children=h}if(a&&a.defaultProps)for(e in f=a.defaultProps,f)void 0===d[e]&&(d[e]=f[e]);return{$$typeof:p,type:a,key:g,ref:k,props:d,_owner:J.current}}
+function N(a,b){return{$$typeof:p,type:a.type,key:b,ref:a.ref,props:a.props,_owner:a._owner}}function O(a){return"object"===typeof a&&null!==a&&a.$$typeof===p}function escape(a){var b={"=":"=0",":":"=2"};return"$"+(""+a).replace(/[=:]/g,function(a){return b[a]})}var P=/\/+/g,Q=[];function R(a,b,c,e){if(Q.length){var d=Q.pop();d.result=a;d.keyPrefix=b;d.func=c;d.context=e;d.count=0;return d}return{result:a,keyPrefix:b,func:c,context:e,count:0}}
+function S(a){a.result=null;a.keyPrefix=null;a.func=null;a.context=null;a.count=0;10>Q.length&&Q.push(a)}
+function T(a,b,c,e){var d=typeof a;if("undefined"===d||"boolean"===d)a=null;var g=!1;if(null===a)g=!0;else switch(d){case "string":case "number":g=!0;break;case "object":switch(a.$$typeof){case p:case q:g=!0}}if(g)return c(e,a,""===b?"."+U(a,0):b),1;g=0;b=""===b?".":b+":";if(Array.isArray(a))for(var k=0;k<a.length;k++){d=a[k];var f=b+U(d,k);g+=T(d,f,c,e)}else if(null===a||"object"!==typeof a?f=null:(f=B&&a[B]||a["@@iterator"],f="function"===typeof f?f:null),"function"===typeof f)for(a=f.call(a),k=
+0;!(d=a.next()).done;)d=d.value,f=b+U(d,k++),g+=T(d,f,c,e);else if("object"===d)throw c=""+a,Error(C(31,"[object Object]"===c?"object with keys {"+Object.keys(a).join(", ")+"}":c,""));return g}function V(a,b,c){return null==a?0:T(a,"",b,c)}function U(a,b){return"object"===typeof a&&null!==a&&null!=a.key?escape(a.key):b.toString(36)}function W(a,b){a.func.call(a.context,b,a.count++)}
+function aa(a,b,c){var e=a.result,d=a.keyPrefix;a=a.func.call(a.context,b,a.count++);Array.isArray(a)?X(a,e,c,function(a){return a}):null!=a&&(O(a)&&(a=N(a,d+(!a.key||b&&b.key===a.key?"":(""+a.key).replace(P,"$&/")+"/")+c)),e.push(a))}function X(a,b,c,e,d){var g="";null!=c&&(g=(""+c).replace(P,"$&/")+"/");b=R(b,g,e,d);V(a,aa,b);S(b)}var Y={current:null};function Z(){var a=Y.current;if(null===a)throw Error(C(321));return a}
+var ba={ReactCurrentDispatcher:Y,ReactCurrentBatchConfig:{suspense:null},ReactCurrentOwner:J,IsSomeRendererActing:{current:!1},assign:l};exports.Children={map:function(a,b,c){if(null==a)return a;var e=[];X(a,e,null,b,c);return e},forEach:function(a,b,c){if(null==a)return a;b=R(null,null,b,c);V(a,W,b);S(b)},count:function(a){return V(a,function(){return null},null)},toArray:function(a){var b=[];X(a,b,null,function(a){return a});return b},only:function(a){if(!O(a))throw Error(C(143));return a}};
+exports.Component=F;exports.Fragment=r;exports.Profiler=u;exports.PureComponent=H;exports.StrictMode=t;exports.Suspense=y;exports.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED=ba;
+exports.cloneElement=function(a,b,c){if(null===a||void 0===a)throw Error(C(267,a));var e=l({},a.props),d=a.key,g=a.ref,k=a._owner;if(null!=b){void 0!==b.ref&&(g=b.ref,k=J.current);void 0!==b.key&&(d=""+b.key);if(a.type&&a.type.defaultProps)var f=a.type.defaultProps;for(h in b)K.call(b,h)&&!L.hasOwnProperty(h)&&(e[h]=void 0===b[h]&&void 0!==f?f[h]:b[h])}var h=arguments.length-2;if(1===h)e.children=c;else if(1<h){f=Array(h);for(var m=0;m<h;m++)f[m]=arguments[m+2];e.children=f}return{$$typeof:p,type:a.type,
+key:d,ref:g,props:e,_owner:k}};exports.createContext=function(a,b){void 0===b&&(b=null);a={$$typeof:w,_calculateChangedBits:b,_currentValue:a,_currentValue2:a,_threadCount:0,Provider:null,Consumer:null};a.Provider={$$typeof:v,_context:a};return a.Consumer=a};exports.createElement=M;exports.createFactory=function(a){var b=M.bind(null,a);b.type=a;return b};exports.createRef=function(){return{current:null}};exports.forwardRef=function(a){return{$$typeof:x,render:a}};exports.isValidElement=O;
+exports.lazy=function(a){return{$$typeof:A,_ctor:a,_status:-1,_result:null}};exports.memo=function(a,b){return{$$typeof:z,type:a,compare:void 0===b?null:b}};exports.useCallback=function(a,b){return Z().useCallback(a,b)};exports.useContext=function(a,b){return Z().useContext(a,b)};exports.useDebugValue=function(){};exports.useEffect=function(a,b){return Z().useEffect(a,b)};exports.useImperativeHandle=function(a,b,c){return Z().useImperativeHandle(a,b,c)};
+exports.useLayoutEffect=function(a,b){return Z().useLayoutEffect(a,b)};exports.useMemo=function(a,b){return Z().useMemo(a,b)};exports.useReducer=function(a,b,c){return Z().useReducer(a,b,c)};exports.useRef=function(a){return Z().useRef(a)};exports.useState=function(a){return Z().useState(a)};exports.version="16.14.0";
diff --git a/igv_component/node_modules/react/index.js b/igv_component/node_modules/react/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..999ead77897d1726c100686831187fff3041fc2e
--- /dev/null
+++ b/igv_component/node_modules/react/index.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/react.production.min.js');
+} else {
+  module.exports = require('./cjs/react.development.js');
+}
diff --git a/igv_component/node_modules/react/jsx-dev-runtime.js b/igv_component/node_modules/react/jsx-dev-runtime.js
new file mode 100644
index 0000000000000000000000000000000000000000..324eb11e5992df2a5402481db28a2359c72017a4
--- /dev/null
+++ b/igv_component/node_modules/react/jsx-dev-runtime.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/react-jsx-dev-runtime.production.min.js');
+} else {
+  module.exports = require('./cjs/react-jsx-dev-runtime.development.js');
+}
diff --git a/igv_component/node_modules/react/jsx-runtime.js b/igv_component/node_modules/react/jsx-runtime.js
new file mode 100644
index 0000000000000000000000000000000000000000..0416df54291a872971e1f51c5dff0f2d83d2a85e
--- /dev/null
+++ b/igv_component/node_modules/react/jsx-runtime.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/react-jsx-runtime.production.min.js');
+} else {
+  module.exports = require('./cjs/react-jsx-runtime.development.js');
+}
diff --git a/igv_component/node_modules/react/package.json b/igv_component/node_modules/react/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..937eaadfbf28f9fd424b46aee72cc53c135937d5
--- /dev/null
+++ b/igv_component/node_modules/react/package.json
@@ -0,0 +1,44 @@
+{
+  "browserify": {
+    "transform": [
+      "loose-envify"
+    ]
+  },
+  "bugs": {
+    "url": "https://github.com/facebook/react/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "loose-envify": "^1.1.0",
+    "object-assign": "^4.1.1",
+    "prop-types": "^15.6.2"
+  },
+  "deprecated": false,
+  "description": "React is a JavaScript library for building user interfaces.",
+  "engines": {
+    "node": ">=0.10.0"
+  },
+  "files": [
+    "LICENSE",
+    "README.md",
+    "build-info.json",
+    "index.js",
+    "cjs/",
+    "umd/",
+    "jsx-runtime.js",
+    "jsx-dev-runtime.js"
+  ],
+  "homepage": "https://reactjs.org/",
+  "keywords": [
+    "react"
+  ],
+  "license": "MIT",
+  "main": "index.js",
+  "name": "react",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/facebook/react.git",
+    "directory": "packages/react"
+  },
+  "version": "16.14.0"
+}
diff --git a/igv_component/node_modules/react/umd/react.development.js b/igv_component/node_modules/react/umd/react.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..7177a4874254cda7855d74d9b5d08727bba97efb
--- /dev/null
+++ b/igv_component/node_modules/react/umd/react.development.js
@@ -0,0 +1,3318 @@
+/** @license React v16.14.0
+ * react.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+  (global = global || self, factory(global.React = {}));
+}(this, (function (exports) { 'use strict';
+
+  var ReactVersion = '16.14.0';
+
+  // The Symbol used to tag the ReactElement-like types. If there is no native Symbol
+  // nor polyfill, then a plain number is used for performance.
+  var hasSymbol = typeof Symbol === 'function' && Symbol.for;
+  var REACT_ELEMENT_TYPE = hasSymbol ? Symbol.for('react.element') : 0xeac7;
+  var REACT_PORTAL_TYPE = hasSymbol ? Symbol.for('react.portal') : 0xeaca;
+  var REACT_FRAGMENT_TYPE = hasSymbol ? Symbol.for('react.fragment') : 0xeacb;
+  var REACT_STRICT_MODE_TYPE = hasSymbol ? Symbol.for('react.strict_mode') : 0xeacc;
+  var REACT_PROFILER_TYPE = hasSymbol ? Symbol.for('react.profiler') : 0xead2;
+  var REACT_PROVIDER_TYPE = hasSymbol ? Symbol.for('react.provider') : 0xeacd;
+  var REACT_CONTEXT_TYPE = hasSymbol ? Symbol.for('react.context') : 0xeace; // TODO: We don't use AsyncMode or ConcurrentMode anymore. They were temporary
+  var REACT_CONCURRENT_MODE_TYPE = hasSymbol ? Symbol.for('react.concurrent_mode') : 0xeacf;
+  var REACT_FORWARD_REF_TYPE = hasSymbol ? Symbol.for('react.forward_ref') : 0xead0;
+  var REACT_SUSPENSE_TYPE = hasSymbol ? Symbol.for('react.suspense') : 0xead1;
+  var REACT_SUSPENSE_LIST_TYPE = hasSymbol ? Symbol.for('react.suspense_list') : 0xead8;
+  var REACT_MEMO_TYPE = hasSymbol ? Symbol.for('react.memo') : 0xead3;
+  var REACT_LAZY_TYPE = hasSymbol ? Symbol.for('react.lazy') : 0xead4;
+  var REACT_BLOCK_TYPE = hasSymbol ? Symbol.for('react.block') : 0xead9;
+  var REACT_FUNDAMENTAL_TYPE = hasSymbol ? Symbol.for('react.fundamental') : 0xead5;
+  var REACT_RESPONDER_TYPE = hasSymbol ? Symbol.for('react.responder') : 0xead6;
+  var REACT_SCOPE_TYPE = hasSymbol ? Symbol.for('react.scope') : 0xead7;
+  var MAYBE_ITERATOR_SYMBOL = typeof Symbol === 'function' && Symbol.iterator;
+  var FAUX_ITERATOR_SYMBOL = '@@iterator';
+  function getIteratorFn(maybeIterable) {
+    if (maybeIterable === null || typeof maybeIterable !== 'object') {
+      return null;
+    }
+
+    var maybeIterator = MAYBE_ITERATOR_SYMBOL && maybeIterable[MAYBE_ITERATOR_SYMBOL] || maybeIterable[FAUX_ITERATOR_SYMBOL];
+
+    if (typeof maybeIterator === 'function') {
+      return maybeIterator;
+    }
+
+    return null;
+  }
+
+  /*
+  object-assign
+  (c) Sindre Sorhus
+  @license MIT
+  */
+  /* eslint-disable no-unused-vars */
+  var getOwnPropertySymbols = Object.getOwnPropertySymbols;
+  var hasOwnProperty = Object.prototype.hasOwnProperty;
+  var propIsEnumerable = Object.prototype.propertyIsEnumerable;
+
+  function toObject(val) {
+  	if (val === null || val === undefined) {
+  		throw new TypeError('Object.assign cannot be called with null or undefined');
+  	}
+
+  	return Object(val);
+  }
+
+  function shouldUseNative() {
+  	try {
+  		if (!Object.assign) {
+  			return false;
+  		}
+
+  		// Detect buggy property enumeration order in older V8 versions.
+
+  		// https://bugs.chromium.org/p/v8/issues/detail?id=4118
+  		var test1 = new String('abc');  // eslint-disable-line no-new-wrappers
+  		test1[5] = 'de';
+  		if (Object.getOwnPropertyNames(test1)[0] === '5') {
+  			return false;
+  		}
+
+  		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
+  		var test2 = {};
+  		for (var i = 0; i < 10; i++) {
+  			test2['_' + String.fromCharCode(i)] = i;
+  		}
+  		var order2 = Object.getOwnPropertyNames(test2).map(function (n) {
+  			return test2[n];
+  		});
+  		if (order2.join('') !== '0123456789') {
+  			return false;
+  		}
+
+  		// https://bugs.chromium.org/p/v8/issues/detail?id=3056
+  		var test3 = {};
+  		'abcdefghijklmnopqrst'.split('').forEach(function (letter) {
+  			test3[letter] = letter;
+  		});
+  		if (Object.keys(Object.assign({}, test3)).join('') !==
+  				'abcdefghijklmnopqrst') {
+  			return false;
+  		}
+
+  		return true;
+  	} catch (err) {
+  		// We don't expect any of the above to throw, but better to be safe.
+  		return false;
+  	}
+  }
+
+  var objectAssign = shouldUseNative() ? Object.assign : function (target, source) {
+  	var from;
+  	var to = toObject(target);
+  	var symbols;
+
+  	for (var s = 1; s < arguments.length; s++) {
+  		from = Object(arguments[s]);
+
+  		for (var key in from) {
+  			if (hasOwnProperty.call(from, key)) {
+  				to[key] = from[key];
+  			}
+  		}
+
+  		if (getOwnPropertySymbols) {
+  			symbols = getOwnPropertySymbols(from);
+  			for (var i = 0; i < symbols.length; i++) {
+  				if (propIsEnumerable.call(from, symbols[i])) {
+  					to[symbols[i]] = from[symbols[i]];
+  				}
+  			}
+  		}
+  	}
+
+  	return to;
+  };
+
+  /**
+   * Keeps track of the current dispatcher.
+   */
+  var ReactCurrentDispatcher = {
+    /**
+     * @internal
+     * @type {ReactComponent}
+     */
+    current: null
+  };
+
+  /**
+   * Keeps track of the current batch's configuration such as how long an update
+   * should suspend for if it needs to.
+   */
+  var ReactCurrentBatchConfig = {
+    suspense: null
+  };
+
+  /**
+   * Keeps track of the current owner.
+   *
+   * The current owner is the component who should own any components that are
+   * currently being constructed.
+   */
+  var ReactCurrentOwner = {
+    /**
+     * @internal
+     * @type {ReactComponent}
+     */
+    current: null
+  };
+
+  var BEFORE_SLASH_RE = /^(.*)[\\\/]/;
+  function describeComponentFrame (name, source, ownerName) {
+    var sourceInfo = '';
+
+    if (source) {
+      var path = source.fileName;
+      var fileName = path.replace(BEFORE_SLASH_RE, '');
+
+      {
+        // In DEV, include code for a common special case:
+        // prefer "folder/index.js" instead of just "index.js".
+        if (/^index\./.test(fileName)) {
+          var match = path.match(BEFORE_SLASH_RE);
+
+          if (match) {
+            var pathBeforeSlash = match[1];
+
+            if (pathBeforeSlash) {
+              var folderName = pathBeforeSlash.replace(BEFORE_SLASH_RE, '');
+              fileName = folderName + '/' + fileName;
+            }
+          }
+        }
+      }
+
+      sourceInfo = ' (at ' + fileName + ':' + source.lineNumber + ')';
+    } else if (ownerName) {
+      sourceInfo = ' (created by ' + ownerName + ')';
+    }
+
+    return '\n    in ' + (name || 'Unknown') + sourceInfo;
+  }
+
+  var Resolved = 1;
+  function refineResolvedLazyComponent(lazyComponent) {
+    return lazyComponent._status === Resolved ? lazyComponent._result : null;
+  }
+
+  function getWrappedName(outerType, innerType, wrapperName) {
+    var functionName = innerType.displayName || innerType.name || '';
+    return outerType.displayName || (functionName !== '' ? wrapperName + "(" + functionName + ")" : wrapperName);
+  }
+
+  function getComponentName(type) {
+    if (type == null) {
+      // Host root, text node or just invalid type.
+      return null;
+    }
+
+    {
+      if (typeof type.tag === 'number') {
+        error('Received an unexpected object in getComponentName(). ' + 'This is likely a bug in React. Please file an issue.');
+      }
+    }
+
+    if (typeof type === 'function') {
+      return type.displayName || type.name || null;
+    }
+
+    if (typeof type === 'string') {
+      return type;
+    }
+
+    switch (type) {
+      case REACT_FRAGMENT_TYPE:
+        return 'Fragment';
+
+      case REACT_PORTAL_TYPE:
+        return 'Portal';
+
+      case REACT_PROFILER_TYPE:
+        return "Profiler";
+
+      case REACT_STRICT_MODE_TYPE:
+        return 'StrictMode';
+
+      case REACT_SUSPENSE_TYPE:
+        return 'Suspense';
+
+      case REACT_SUSPENSE_LIST_TYPE:
+        return 'SuspenseList';
+    }
+
+    if (typeof type === 'object') {
+      switch (type.$$typeof) {
+        case REACT_CONTEXT_TYPE:
+          return 'Context.Consumer';
+
+        case REACT_PROVIDER_TYPE:
+          return 'Context.Provider';
+
+        case REACT_FORWARD_REF_TYPE:
+          return getWrappedName(type, type.render, 'ForwardRef');
+
+        case REACT_MEMO_TYPE:
+          return getComponentName(type.type);
+
+        case REACT_BLOCK_TYPE:
+          return getComponentName(type.render);
+
+        case REACT_LAZY_TYPE:
+          {
+            var thenable = type;
+            var resolvedThenable = refineResolvedLazyComponent(thenable);
+
+            if (resolvedThenable) {
+              return getComponentName(resolvedThenable);
+            }
+
+            break;
+          }
+      }
+    }
+
+    return null;
+  }
+
+  var ReactDebugCurrentFrame = {};
+  var currentlyValidatingElement = null;
+  function setCurrentlyValidatingElement(element) {
+    {
+      currentlyValidatingElement = element;
+    }
+  }
+
+  {
+    // Stack implementation injected by the current renderer.
+    ReactDebugCurrentFrame.getCurrentStack = null;
+
+    ReactDebugCurrentFrame.getStackAddendum = function () {
+      var stack = ''; // Add an extra top frame while an element is being validated
+
+      if (currentlyValidatingElement) {
+        var name = getComponentName(currentlyValidatingElement.type);
+        var owner = currentlyValidatingElement._owner;
+        stack += describeComponentFrame(name, currentlyValidatingElement._source, owner && getComponentName(owner.type));
+      } // Delegate to the injected renderer-specific implementation
+
+
+      var impl = ReactDebugCurrentFrame.getCurrentStack;
+
+      if (impl) {
+        stack += impl() || '';
+      }
+
+      return stack;
+    };
+  }
+
+  /**
+   * Used by act() to track whether you're inside an act() scope.
+   */
+  var IsSomeRendererActing = {
+    current: false
+  };
+
+  var ReactSharedInternals = {
+    ReactCurrentDispatcher: ReactCurrentDispatcher,
+    ReactCurrentBatchConfig: ReactCurrentBatchConfig,
+    ReactCurrentOwner: ReactCurrentOwner,
+    IsSomeRendererActing: IsSomeRendererActing,
+    // Used by renderers to avoid bundling object-assign twice in UMD bundles:
+    assign: objectAssign
+  };
+
+  {
+    objectAssign(ReactSharedInternals, {
+      // These should not be included in production.
+      ReactDebugCurrentFrame: ReactDebugCurrentFrame,
+      // Shim for React DOM 16.0.0 which still destructured (but not used) this.
+      // TODO: remove in React 17.0.
+      ReactComponentTreeHook: {}
+    });
+  }
+
+  // by calls to these methods by a Babel plugin.
+  //
+  // In PROD (or in packages without access to React internals),
+  // they are left as they are instead.
+
+  function warn(format) {
+    {
+      for (var _len = arguments.length, args = new Array(_len > 1 ? _len - 1 : 0), _key = 1; _key < _len; _key++) {
+        args[_key - 1] = arguments[_key];
+      }
+
+      printWarning('warn', format, args);
+    }
+  }
+  function error(format) {
+    {
+      for (var _len2 = arguments.length, args = new Array(_len2 > 1 ? _len2 - 1 : 0), _key2 = 1; _key2 < _len2; _key2++) {
+        args[_key2 - 1] = arguments[_key2];
+      }
+
+      printWarning('error', format, args);
+    }
+  }
+
+  function printWarning(level, format, args) {
+    // When changing this logic, you might want to also
+    // update consoleWithStackDev.www.js as well.
+    {
+      var hasExistingStack = args.length > 0 && typeof args[args.length - 1] === 'string' && args[args.length - 1].indexOf('\n    in') === 0;
+
+      if (!hasExistingStack) {
+        var ReactDebugCurrentFrame = ReactSharedInternals.ReactDebugCurrentFrame;
+        var stack = ReactDebugCurrentFrame.getStackAddendum();
+
+        if (stack !== '') {
+          format += '%s';
+          args = args.concat([stack]);
+        }
+      }
+
+      var argsWithFormat = args.map(function (item) {
+        return '' + item;
+      }); // Careful: RN currently depends on this prefix
+
+      argsWithFormat.unshift('Warning: ' + format); // We intentionally don't use spread (or .apply) directly because it
+      // breaks IE9: https://github.com/facebook/react/issues/13610
+      // eslint-disable-next-line react-internal/no-production-logging
+
+      Function.prototype.apply.call(console[level], console, argsWithFormat);
+
+      try {
+        // --- Welcome to debugging React ---
+        // This error was thrown as a convenience so that you can use this stack
+        // to find the callsite that caused this warning to fire.
+        var argIndex = 0;
+        var message = 'Warning: ' + format.replace(/%s/g, function () {
+          return args[argIndex++];
+        });
+        throw new Error(message);
+      } catch (x) {}
+    }
+  }
+
+  var didWarnStateUpdateForUnmountedComponent = {};
+
+  function warnNoop(publicInstance, callerName) {
+    {
+      var _constructor = publicInstance.constructor;
+      var componentName = _constructor && (_constructor.displayName || _constructor.name) || 'ReactClass';
+      var warningKey = componentName + "." + callerName;
+
+      if (didWarnStateUpdateForUnmountedComponent[warningKey]) {
+        return;
+      }
+
+      error("Can't call %s on a component that is not yet mounted. " + 'This is a no-op, but it might indicate a bug in your application. ' + 'Instead, assign to `this.state` directly or define a `state = {};` ' + 'class property with the desired state in the %s component.', callerName, componentName);
+
+      didWarnStateUpdateForUnmountedComponent[warningKey] = true;
+    }
+  }
+  /**
+   * This is the abstract API for an update queue.
+   */
+
+
+  var ReactNoopUpdateQueue = {
+    /**
+     * Checks whether or not this composite component is mounted.
+     * @param {ReactClass} publicInstance The instance we want to test.
+     * @return {boolean} True if mounted, false otherwise.
+     * @protected
+     * @final
+     */
+    isMounted: function (publicInstance) {
+      return false;
+    },
+
+    /**
+     * Forces an update. This should only be invoked when it is known with
+     * certainty that we are **not** in a DOM transaction.
+     *
+     * You may want to call this when you know that some deeper aspect of the
+     * component's state has changed but `setState` was not called.
+     *
+     * This will not invoke `shouldComponentUpdate`, but it will invoke
+     * `componentWillUpdate` and `componentDidUpdate`.
+     *
+     * @param {ReactClass} publicInstance The instance that should rerender.
+     * @param {?function} callback Called after component is updated.
+     * @param {?string} callerName name of the calling function in the public API.
+     * @internal
+     */
+    enqueueForceUpdate: function (publicInstance, callback, callerName) {
+      warnNoop(publicInstance, 'forceUpdate');
+    },
+
+    /**
+     * Replaces all of the state. Always use this or `setState` to mutate state.
+     * You should treat `this.state` as immutable.
+     *
+     * There is no guarantee that `this.state` will be immediately updated, so
+     * accessing `this.state` after calling this method may return the old value.
+     *
+     * @param {ReactClass} publicInstance The instance that should rerender.
+     * @param {object} completeState Next state.
+     * @param {?function} callback Called after component is updated.
+     * @param {?string} callerName name of the calling function in the public API.
+     * @internal
+     */
+    enqueueReplaceState: function (publicInstance, completeState, callback, callerName) {
+      warnNoop(publicInstance, 'replaceState');
+    },
+
+    /**
+     * Sets a subset of the state. This only exists because _pendingState is
+     * internal. This provides a merging strategy that is not available to deep
+     * properties which is confusing. TODO: Expose pendingState or don't use it
+     * during the merge.
+     *
+     * @param {ReactClass} publicInstance The instance that should rerender.
+     * @param {object} partialState Next partial state to be merged with state.
+     * @param {?function} callback Called after component is updated.
+     * @param {?string} Name of the calling function in the public API.
+     * @internal
+     */
+    enqueueSetState: function (publicInstance, partialState, callback, callerName) {
+      warnNoop(publicInstance, 'setState');
+    }
+  };
+
+  var emptyObject = {};
+
+  {
+    Object.freeze(emptyObject);
+  }
+  /**
+   * Base class helpers for the updating state of a component.
+   */
+
+
+  function Component(props, context, updater) {
+    this.props = props;
+    this.context = context; // If a component has string refs, we will assign a different object later.
+
+    this.refs = emptyObject; // We initialize the default updater but the real one gets injected by the
+    // renderer.
+
+    this.updater = updater || ReactNoopUpdateQueue;
+  }
+
+  Component.prototype.isReactComponent = {};
+  /**
+   * Sets a subset of the state. Always use this to mutate
+   * state. You should treat `this.state` as immutable.
+   *
+   * There is no guarantee that `this.state` will be immediately updated, so
+   * accessing `this.state` after calling this method may return the old value.
+   *
+   * There is no guarantee that calls to `setState` will run synchronously,
+   * as they may eventually be batched together.  You can provide an optional
+   * callback that will be executed when the call to setState is actually
+   * completed.
+   *
+   * When a function is provided to setState, it will be called at some point in
+   * the future (not synchronously). It will be called with the up to date
+   * component arguments (state, props, context). These values can be different
+   * from this.* because your function may be called after receiveProps but before
+   * shouldComponentUpdate, and this new state, props, and context will not yet be
+   * assigned to this.
+   *
+   * @param {object|function} partialState Next partial state or function to
+   *        produce next partial state to be merged with current state.
+   * @param {?function} callback Called after state is updated.
+   * @final
+   * @protected
+   */
+
+  Component.prototype.setState = function (partialState, callback) {
+    if (!(typeof partialState === 'object' || typeof partialState === 'function' || partialState == null)) {
+      {
+        throw Error( "setState(...): takes an object of state variables to update or a function which returns an object of state variables." );
+      }
+    }
+
+    this.updater.enqueueSetState(this, partialState, callback, 'setState');
+  };
+  /**
+   * Forces an update. This should only be invoked when it is known with
+   * certainty that we are **not** in a DOM transaction.
+   *
+   * You may want to call this when you know that some deeper aspect of the
+   * component's state has changed but `setState` was not called.
+   *
+   * This will not invoke `shouldComponentUpdate`, but it will invoke
+   * `componentWillUpdate` and `componentDidUpdate`.
+   *
+   * @param {?function} callback Called after update is complete.
+   * @final
+   * @protected
+   */
+
+
+  Component.prototype.forceUpdate = function (callback) {
+    this.updater.enqueueForceUpdate(this, callback, 'forceUpdate');
+  };
+  /**
+   * Deprecated APIs. These APIs used to exist on classic React classes but since
+   * we would like to deprecate them, we're not going to move them over to this
+   * modern base class. Instead, we define a getter that warns if it's accessed.
+   */
+
+
+  {
+    var deprecatedAPIs = {
+      isMounted: ['isMounted', 'Instead, make sure to clean up subscriptions and pending requests in ' + 'componentWillUnmount to prevent memory leaks.'],
+      replaceState: ['replaceState', 'Refactor your code to use setState instead (see ' + 'https://github.com/facebook/react/issues/3236).']
+    };
+
+    var defineDeprecationWarning = function (methodName, info) {
+      Object.defineProperty(Component.prototype, methodName, {
+        get: function () {
+          warn('%s(...) is deprecated in plain JavaScript React classes. %s', info[0], info[1]);
+
+          return undefined;
+        }
+      });
+    };
+
+    for (var fnName in deprecatedAPIs) {
+      if (deprecatedAPIs.hasOwnProperty(fnName)) {
+        defineDeprecationWarning(fnName, deprecatedAPIs[fnName]);
+      }
+    }
+  }
+
+  function ComponentDummy() {}
+
+  ComponentDummy.prototype = Component.prototype;
+  /**
+   * Convenience component with default shallow equality check for sCU.
+   */
+
+  function PureComponent(props, context, updater) {
+    this.props = props;
+    this.context = context; // If a component has string refs, we will assign a different object later.
+
+    this.refs = emptyObject;
+    this.updater = updater || ReactNoopUpdateQueue;
+  }
+
+  var pureComponentPrototype = PureComponent.prototype = new ComponentDummy();
+  pureComponentPrototype.constructor = PureComponent; // Avoid an extra prototype jump for these methods.
+
+  objectAssign(pureComponentPrototype, Component.prototype);
+
+  pureComponentPrototype.isPureReactComponent = true;
+
+  // an immutable object with a single mutable value
+  function createRef() {
+    var refObject = {
+      current: null
+    };
+
+    {
+      Object.seal(refObject);
+    }
+
+    return refObject;
+  }
+
+  var hasOwnProperty$1 = Object.prototype.hasOwnProperty;
+  var RESERVED_PROPS = {
+    key: true,
+    ref: true,
+    __self: true,
+    __source: true
+  };
+  var specialPropKeyWarningShown, specialPropRefWarningShown, didWarnAboutStringRefs;
+
+  {
+    didWarnAboutStringRefs = {};
+  }
+
+  function hasValidRef(config) {
+    {
+      if (hasOwnProperty$1.call(config, 'ref')) {
+        var getter = Object.getOwnPropertyDescriptor(config, 'ref').get;
+
+        if (getter && getter.isReactWarning) {
+          return false;
+        }
+      }
+    }
+
+    return config.ref !== undefined;
+  }
+
+  function hasValidKey(config) {
+    {
+      if (hasOwnProperty$1.call(config, 'key')) {
+        var getter = Object.getOwnPropertyDescriptor(config, 'key').get;
+
+        if (getter && getter.isReactWarning) {
+          return false;
+        }
+      }
+    }
+
+    return config.key !== undefined;
+  }
+
+  function defineKeyPropWarningGetter(props, displayName) {
+    var warnAboutAccessingKey = function () {
+      {
+        if (!specialPropKeyWarningShown) {
+          specialPropKeyWarningShown = true;
+
+          error('%s: `key` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https://fb.me/react-special-props)', displayName);
+        }
+      }
+    };
+
+    warnAboutAccessingKey.isReactWarning = true;
+    Object.defineProperty(props, 'key', {
+      get: warnAboutAccessingKey,
+      configurable: true
+    });
+  }
+
+  function defineRefPropWarningGetter(props, displayName) {
+    var warnAboutAccessingRef = function () {
+      {
+        if (!specialPropRefWarningShown) {
+          specialPropRefWarningShown = true;
+
+          error('%s: `ref` is not a prop. Trying to access it will result ' + 'in `undefined` being returned. If you need to access the same ' + 'value within the child component, you should pass it as a different ' + 'prop. (https://fb.me/react-special-props)', displayName);
+        }
+      }
+    };
+
+    warnAboutAccessingRef.isReactWarning = true;
+    Object.defineProperty(props, 'ref', {
+      get: warnAboutAccessingRef,
+      configurable: true
+    });
+  }
+
+  function warnIfStringRefCannotBeAutoConverted(config) {
+    {
+      if (typeof config.ref === 'string' && ReactCurrentOwner.current && config.__self && ReactCurrentOwner.current.stateNode !== config.__self) {
+        var componentName = getComponentName(ReactCurrentOwner.current.type);
+
+        if (!didWarnAboutStringRefs[componentName]) {
+          error('Component "%s" contains the string ref "%s". ' + 'Support for string refs will be removed in a future major release. ' + 'This case cannot be automatically converted to an arrow function. ' + 'We ask you to manually fix this case by using useRef() or createRef() instead. ' + 'Learn more about using refs safely here: ' + 'https://fb.me/react-strict-mode-string-ref', getComponentName(ReactCurrentOwner.current.type), config.ref);
+
+          didWarnAboutStringRefs[componentName] = true;
+        }
+      }
+    }
+  }
+  /**
+   * Factory method to create a new React element. This no longer adheres to
+   * the class pattern, so do not use new to call it. Also, instanceof check
+   * will not work. Instead test $$typeof field against Symbol.for('react.element') to check
+   * if something is a React Element.
+   *
+   * @param {*} type
+   * @param {*} props
+   * @param {*} key
+   * @param {string|object} ref
+   * @param {*} owner
+   * @param {*} self A *temporary* helper to detect places where `this` is
+   * different from the `owner` when React.createElement is called, so that we
+   * can warn. We want to get rid of owner and replace string `ref`s with arrow
+   * functions, and as long as `this` and owner are the same, there will be no
+   * change in behavior.
+   * @param {*} source An annotation object (added by a transpiler or otherwise)
+   * indicating filename, line number, and/or other information.
+   * @internal
+   */
+
+
+  var ReactElement = function (type, key, ref, self, source, owner, props) {
+    var element = {
+      // This tag allows us to uniquely identify this as a React Element
+      $$typeof: REACT_ELEMENT_TYPE,
+      // Built-in properties that belong on the element
+      type: type,
+      key: key,
+      ref: ref,
+      props: props,
+      // Record the component responsible for creating this element.
+      _owner: owner
+    };
+
+    {
+      // The validation flag is currently mutative. We put it on
+      // an external backing store so that we can freeze the whole object.
+      // This can be replaced with a WeakMap once they are implemented in
+      // commonly used development environments.
+      element._store = {}; // To make comparing ReactElements easier for testing purposes, we make
+      // the validation flag non-enumerable (where possible, which should
+      // include every environment we run tests in), so the test framework
+      // ignores it.
+
+      Object.defineProperty(element._store, 'validated', {
+        configurable: false,
+        enumerable: false,
+        writable: true,
+        value: false
+      }); // self and source are DEV only properties.
+
+      Object.defineProperty(element, '_self', {
+        configurable: false,
+        enumerable: false,
+        writable: false,
+        value: self
+      }); // Two elements created in two different places should be considered
+      // equal for testing purposes and therefore we hide it from enumeration.
+
+      Object.defineProperty(element, '_source', {
+        configurable: false,
+        enumerable: false,
+        writable: false,
+        value: source
+      });
+
+      if (Object.freeze) {
+        Object.freeze(element.props);
+        Object.freeze(element);
+      }
+    }
+
+    return element;
+  };
+  /**
+   * Create and return a new ReactElement of the given type.
+   * See https://reactjs.org/docs/react-api.html#createelement
+   */
+
+  function createElement(type, config, children) {
+    var propName; // Reserved names are extracted
+
+    var props = {};
+    var key = null;
+    var ref = null;
+    var self = null;
+    var source = null;
+
+    if (config != null) {
+      if (hasValidRef(config)) {
+        ref = config.ref;
+
+        {
+          warnIfStringRefCannotBeAutoConverted(config);
+        }
+      }
+
+      if (hasValidKey(config)) {
+        key = '' + config.key;
+      }
+
+      self = config.__self === undefined ? null : config.__self;
+      source = config.__source === undefined ? null : config.__source; // Remaining properties are added to a new props object
+
+      for (propName in config) {
+        if (hasOwnProperty$1.call(config, propName) && !RESERVED_PROPS.hasOwnProperty(propName)) {
+          props[propName] = config[propName];
+        }
+      }
+    } // Children can be more than one argument, and those are transferred onto
+    // the newly allocated props object.
+
+
+    var childrenLength = arguments.length - 2;
+
+    if (childrenLength === 1) {
+      props.children = children;
+    } else if (childrenLength > 1) {
+      var childArray = Array(childrenLength);
+
+      for (var i = 0; i < childrenLength; i++) {
+        childArray[i] = arguments[i + 2];
+      }
+
+      {
+        if (Object.freeze) {
+          Object.freeze(childArray);
+        }
+      }
+
+      props.children = childArray;
+    } // Resolve default props
+
+
+    if (type && type.defaultProps) {
+      var defaultProps = type.defaultProps;
+
+      for (propName in defaultProps) {
+        if (props[propName] === undefined) {
+          props[propName] = defaultProps[propName];
+        }
+      }
+    }
+
+    {
+      if (key || ref) {
+        var displayName = typeof type === 'function' ? type.displayName || type.name || 'Unknown' : type;
+
+        if (key) {
+          defineKeyPropWarningGetter(props, displayName);
+        }
+
+        if (ref) {
+          defineRefPropWarningGetter(props, displayName);
+        }
+      }
+    }
+
+    return ReactElement(type, key, ref, self, source, ReactCurrentOwner.current, props);
+  }
+  function cloneAndReplaceKey(oldElement, newKey) {
+    var newElement = ReactElement(oldElement.type, newKey, oldElement.ref, oldElement._self, oldElement._source, oldElement._owner, oldElement.props);
+    return newElement;
+  }
+  /**
+   * Clone and return a new ReactElement using element as the starting point.
+   * See https://reactjs.org/docs/react-api.html#cloneelement
+   */
+
+  function cloneElement(element, config, children) {
+    if (!!(element === null || element === undefined)) {
+      {
+        throw Error( "React.cloneElement(...): The argument must be a React element, but you passed " + element + "." );
+      }
+    }
+
+    var propName; // Original props are copied
+
+    var props = objectAssign({}, element.props); // Reserved names are extracted
+
+
+    var key = element.key;
+    var ref = element.ref; // Self is preserved since the owner is preserved.
+
+    var self = element._self; // Source is preserved since cloneElement is unlikely to be targeted by a
+    // transpiler, and the original source is probably a better indicator of the
+    // true owner.
+
+    var source = element._source; // Owner will be preserved, unless ref is overridden
+
+    var owner = element._owner;
+
+    if (config != null) {
+      if (hasValidRef(config)) {
+        // Silently steal the ref from the parent.
+        ref = config.ref;
+        owner = ReactCurrentOwner.current;
+      }
+
+      if (hasValidKey(config)) {
+        key = '' + config.key;
+      } // Remaining properties override existing props
+
+
+      var defaultProps;
+
+      if (element.type && element.type.defaultProps) {
+        defaultProps = element.type.defaultProps;
+      }
+
+      for (propName in config) {
+        if (hasOwnProperty$1.call(config, propName) && !RESERVED_PROPS.hasOwnProperty(propName)) {
+          if (config[propName] === undefined && defaultProps !== undefined) {
+            // Resolve default props
+            props[propName] = defaultProps[propName];
+          } else {
+            props[propName] = config[propName];
+          }
+        }
+      }
+    } // Children can be more than one argument, and those are transferred onto
+    // the newly allocated props object.
+
+
+    var childrenLength = arguments.length - 2;
+
+    if (childrenLength === 1) {
+      props.children = children;
+    } else if (childrenLength > 1) {
+      var childArray = Array(childrenLength);
+
+      for (var i = 0; i < childrenLength; i++) {
+        childArray[i] = arguments[i + 2];
+      }
+
+      props.children = childArray;
+    }
+
+    return ReactElement(element.type, key, ref, self, source, owner, props);
+  }
+  /**
+   * Verifies the object is a ReactElement.
+   * See https://reactjs.org/docs/react-api.html#isvalidelement
+   * @param {?object} object
+   * @return {boolean} True if `object` is a ReactElement.
+   * @final
+   */
+
+  function isValidElement(object) {
+    return typeof object === 'object' && object !== null && object.$$typeof === REACT_ELEMENT_TYPE;
+  }
+
+  var SEPARATOR = '.';
+  var SUBSEPARATOR = ':';
+  /**
+   * Escape and wrap key so it is safe to use as a reactid
+   *
+   * @param {string} key to be escaped.
+   * @return {string} the escaped key.
+   */
+
+  function escape(key) {
+    var escapeRegex = /[=:]/g;
+    var escaperLookup = {
+      '=': '=0',
+      ':': '=2'
+    };
+    var escapedString = ('' + key).replace(escapeRegex, function (match) {
+      return escaperLookup[match];
+    });
+    return '$' + escapedString;
+  }
+  /**
+   * TODO: Test that a single child and an array with one item have the same key
+   * pattern.
+   */
+
+
+  var didWarnAboutMaps = false;
+  var userProvidedKeyEscapeRegex = /\/+/g;
+
+  function escapeUserProvidedKey(text) {
+    return ('' + text).replace(userProvidedKeyEscapeRegex, '$&/');
+  }
+
+  var POOL_SIZE = 10;
+  var traverseContextPool = [];
+
+  function getPooledTraverseContext(mapResult, keyPrefix, mapFunction, mapContext) {
+    if (traverseContextPool.length) {
+      var traverseContext = traverseContextPool.pop();
+      traverseContext.result = mapResult;
+      traverseContext.keyPrefix = keyPrefix;
+      traverseContext.func = mapFunction;
+      traverseContext.context = mapContext;
+      traverseContext.count = 0;
+      return traverseContext;
+    } else {
+      return {
+        result: mapResult,
+        keyPrefix: keyPrefix,
+        func: mapFunction,
+        context: mapContext,
+        count: 0
+      };
+    }
+  }
+
+  function releaseTraverseContext(traverseContext) {
+    traverseContext.result = null;
+    traverseContext.keyPrefix = null;
+    traverseContext.func = null;
+    traverseContext.context = null;
+    traverseContext.count = 0;
+
+    if (traverseContextPool.length < POOL_SIZE) {
+      traverseContextPool.push(traverseContext);
+    }
+  }
+  /**
+   * @param {?*} children Children tree container.
+   * @param {!string} nameSoFar Name of the key path so far.
+   * @param {!function} callback Callback to invoke with each child found.
+   * @param {?*} traverseContext Used to pass information throughout the traversal
+   * process.
+   * @return {!number} The number of children in this subtree.
+   */
+
+
+  function traverseAllChildrenImpl(children, nameSoFar, callback, traverseContext) {
+    var type = typeof children;
+
+    if (type === 'undefined' || type === 'boolean') {
+      // All of the above are perceived as null.
+      children = null;
+    }
+
+    var invokeCallback = false;
+
+    if (children === null) {
+      invokeCallback = true;
+    } else {
+      switch (type) {
+        case 'string':
+        case 'number':
+          invokeCallback = true;
+          break;
+
+        case 'object':
+          switch (children.$$typeof) {
+            case REACT_ELEMENT_TYPE:
+            case REACT_PORTAL_TYPE:
+              invokeCallback = true;
+          }
+
+      }
+    }
+
+    if (invokeCallback) {
+      callback(traverseContext, children, // If it's the only child, treat the name as if it was wrapped in an array
+      // so that it's consistent if the number of children grows.
+      nameSoFar === '' ? SEPARATOR + getComponentKey(children, 0) : nameSoFar);
+      return 1;
+    }
+
+    var child;
+    var nextName;
+    var subtreeCount = 0; // Count of children found in the current subtree.
+
+    var nextNamePrefix = nameSoFar === '' ? SEPARATOR : nameSoFar + SUBSEPARATOR;
+
+    if (Array.isArray(children)) {
+      for (var i = 0; i < children.length; i++) {
+        child = children[i];
+        nextName = nextNamePrefix + getComponentKey(child, i);
+        subtreeCount += traverseAllChildrenImpl(child, nextName, callback, traverseContext);
+      }
+    } else {
+      var iteratorFn = getIteratorFn(children);
+
+      if (typeof iteratorFn === 'function') {
+
+        {
+          // Warn about using Maps as children
+          if (iteratorFn === children.entries) {
+            if (!didWarnAboutMaps) {
+              warn('Using Maps as children is deprecated and will be removed in ' + 'a future major release. Consider converting children to ' + 'an array of keyed ReactElements instead.');
+            }
+
+            didWarnAboutMaps = true;
+          }
+        }
+
+        var iterator = iteratorFn.call(children);
+        var step;
+        var ii = 0;
+
+        while (!(step = iterator.next()).done) {
+          child = step.value;
+          nextName = nextNamePrefix + getComponentKey(child, ii++);
+          subtreeCount += traverseAllChildrenImpl(child, nextName, callback, traverseContext);
+        }
+      } else if (type === 'object') {
+        var addendum = '';
+
+        {
+          addendum = ' If you meant to render a collection of children, use an array ' + 'instead.' + ReactDebugCurrentFrame.getStackAddendum();
+        }
+
+        var childrenString = '' + children;
+
+        {
+          {
+            throw Error( "Objects are not valid as a React child (found: " + (childrenString === '[object Object]' ? 'object with keys {' + Object.keys(children).join(', ') + '}' : childrenString) + ")." + addendum );
+          }
+        }
+      }
+    }
+
+    return subtreeCount;
+  }
+  /**
+   * Traverses children that are typically specified as `props.children`, but
+   * might also be specified through attributes:
+   *
+   * - `traverseAllChildren(this.props.children, ...)`
+   * - `traverseAllChildren(this.props.leftPanelChildren, ...)`
+   *
+   * The `traverseContext` is an optional argument that is passed through the
+   * entire traversal. It can be used to store accumulations or anything else that
+   * the callback might find relevant.
+   *
+   * @param {?*} children Children tree object.
+   * @param {!function} callback To invoke upon traversing each child.
+   * @param {?*} traverseContext Context for traversal.
+   * @return {!number} The number of children in this subtree.
+   */
+
+
+  function traverseAllChildren(children, callback, traverseContext) {
+    if (children == null) {
+      return 0;
+    }
+
+    return traverseAllChildrenImpl(children, '', callback, traverseContext);
+  }
+  /**
+   * Generate a key string that identifies a component within a set.
+   *
+   * @param {*} component A component that could contain a manual key.
+   * @param {number} index Index that is used if a manual key is not provided.
+   * @return {string}
+   */
+
+
+  function getComponentKey(component, index) {
+    // Do some typechecking here since we call this blindly. We want to ensure
+    // that we don't block potential future ES APIs.
+    if (typeof component === 'object' && component !== null && component.key != null) {
+      // Explicit key
+      return escape(component.key);
+    } // Implicit key determined by the index in the set
+
+
+    return index.toString(36);
+  }
+
+  function forEachSingleChild(bookKeeping, child, name) {
+    var func = bookKeeping.func,
+        context = bookKeeping.context;
+    func.call(context, child, bookKeeping.count++);
+  }
+  /**
+   * Iterates through children that are typically specified as `props.children`.
+   *
+   * See https://reactjs.org/docs/react-api.html#reactchildrenforeach
+   *
+   * The provided forEachFunc(child, index) will be called for each
+   * leaf child.
+   *
+   * @param {?*} children Children tree container.
+   * @param {function(*, int)} forEachFunc
+   * @param {*} forEachContext Context for forEachContext.
+   */
+
+
+  function forEachChildren(children, forEachFunc, forEachContext) {
+    if (children == null) {
+      return children;
+    }
+
+    var traverseContext = getPooledTraverseContext(null, null, forEachFunc, forEachContext);
+    traverseAllChildren(children, forEachSingleChild, traverseContext);
+    releaseTraverseContext(traverseContext);
+  }
+
+  function mapSingleChildIntoContext(bookKeeping, child, childKey) {
+    var result = bookKeeping.result,
+        keyPrefix = bookKeeping.keyPrefix,
+        func = bookKeeping.func,
+        context = bookKeeping.context;
+    var mappedChild = func.call(context, child, bookKeeping.count++);
+
+    if (Array.isArray(mappedChild)) {
+      mapIntoWithKeyPrefixInternal(mappedChild, result, childKey, function (c) {
+        return c;
+      });
+    } else if (mappedChild != null) {
+      if (isValidElement(mappedChild)) {
+        mappedChild = cloneAndReplaceKey(mappedChild, // Keep both the (mapped) and old keys if they differ, just as
+        // traverseAllChildren used to do for objects as children
+        keyPrefix + (mappedChild.key && (!child || child.key !== mappedChild.key) ? escapeUserProvidedKey(mappedChild.key) + '/' : '') + childKey);
+      }
+
+      result.push(mappedChild);
+    }
+  }
+
+  function mapIntoWithKeyPrefixInternal(children, array, prefix, func, context) {
+    var escapedPrefix = '';
+
+    if (prefix != null) {
+      escapedPrefix = escapeUserProvidedKey(prefix) + '/';
+    }
+
+    var traverseContext = getPooledTraverseContext(array, escapedPrefix, func, context);
+    traverseAllChildren(children, mapSingleChildIntoContext, traverseContext);
+    releaseTraverseContext(traverseContext);
+  }
+  /**
+   * Maps children that are typically specified as `props.children`.
+   *
+   * See https://reactjs.org/docs/react-api.html#reactchildrenmap
+   *
+   * The provided mapFunction(child, key, index) will be called for each
+   * leaf child.
+   *
+   * @param {?*} children Children tree container.
+   * @param {function(*, int)} func The map function.
+   * @param {*} context Context for mapFunction.
+   * @return {object} Object containing the ordered map of results.
+   */
+
+
+  function mapChildren(children, func, context) {
+    if (children == null) {
+      return children;
+    }
+
+    var result = [];
+    mapIntoWithKeyPrefixInternal(children, result, null, func, context);
+    return result;
+  }
+  /**
+   * Count the number of children that are typically specified as
+   * `props.children`.
+   *
+   * See https://reactjs.org/docs/react-api.html#reactchildrencount
+   *
+   * @param {?*} children Children tree container.
+   * @return {number} The number of children.
+   */
+
+
+  function countChildren(children) {
+    return traverseAllChildren(children, function () {
+      return null;
+    }, null);
+  }
+  /**
+   * Flatten a children object (typically specified as `props.children`) and
+   * return an array with appropriately re-keyed children.
+   *
+   * See https://reactjs.org/docs/react-api.html#reactchildrentoarray
+   */
+
+
+  function toArray(children) {
+    var result = [];
+    mapIntoWithKeyPrefixInternal(children, result, null, function (child) {
+      return child;
+    });
+    return result;
+  }
+  /**
+   * Returns the first child in a collection of children and verifies that there
+   * is only one child in the collection.
+   *
+   * See https://reactjs.org/docs/react-api.html#reactchildrenonly
+   *
+   * The current implementation of this function assumes that a single child gets
+   * passed without a wrapper, but the purpose of this helper function is to
+   * abstract away the particular structure of children.
+   *
+   * @param {?object} children Child collection structure.
+   * @return {ReactElement} The first and only `ReactElement` contained in the
+   * structure.
+   */
+
+
+  function onlyChild(children) {
+    if (!isValidElement(children)) {
+      {
+        throw Error( "React.Children.only expected to receive a single React element child." );
+      }
+    }
+
+    return children;
+  }
+
+  function createContext(defaultValue, calculateChangedBits) {
+    if (calculateChangedBits === undefined) {
+      calculateChangedBits = null;
+    } else {
+      {
+        if (calculateChangedBits !== null && typeof calculateChangedBits !== 'function') {
+          error('createContext: Expected the optional second argument to be a ' + 'function. Instead received: %s', calculateChangedBits);
+        }
+      }
+    }
+
+    var context = {
+      $$typeof: REACT_CONTEXT_TYPE,
+      _calculateChangedBits: calculateChangedBits,
+      // As a workaround to support multiple concurrent renderers, we categorize
+      // some renderers as primary and others as secondary. We only expect
+      // there to be two concurrent renderers at most: React Native (primary) and
+      // Fabric (secondary); React DOM (primary) and React ART (secondary).
+      // Secondary renderers store their context values on separate fields.
+      _currentValue: defaultValue,
+      _currentValue2: defaultValue,
+      // Used to track how many concurrent renderers this context currently
+      // supports within in a single renderer. Such as parallel server rendering.
+      _threadCount: 0,
+      // These are circular
+      Provider: null,
+      Consumer: null
+    };
+    context.Provider = {
+      $$typeof: REACT_PROVIDER_TYPE,
+      _context: context
+    };
+    var hasWarnedAboutUsingNestedContextConsumers = false;
+    var hasWarnedAboutUsingConsumerProvider = false;
+
+    {
+      // A separate object, but proxies back to the original context object for
+      // backwards compatibility. It has a different $$typeof, so we can properly
+      // warn for the incorrect usage of Context as a Consumer.
+      var Consumer = {
+        $$typeof: REACT_CONTEXT_TYPE,
+        _context: context,
+        _calculateChangedBits: context._calculateChangedBits
+      }; // $FlowFixMe: Flow complains about not setting a value, which is intentional here
+
+      Object.defineProperties(Consumer, {
+        Provider: {
+          get: function () {
+            if (!hasWarnedAboutUsingConsumerProvider) {
+              hasWarnedAboutUsingConsumerProvider = true;
+
+              error('Rendering <Context.Consumer.Provider> is not supported and will be removed in ' + 'a future major release. Did you mean to render <Context.Provider> instead?');
+            }
+
+            return context.Provider;
+          },
+          set: function (_Provider) {
+            context.Provider = _Provider;
+          }
+        },
+        _currentValue: {
+          get: function () {
+            return context._currentValue;
+          },
+          set: function (_currentValue) {
+            context._currentValue = _currentValue;
+          }
+        },
+        _currentValue2: {
+          get: function () {
+            return context._currentValue2;
+          },
+          set: function (_currentValue2) {
+            context._currentValue2 = _currentValue2;
+          }
+        },
+        _threadCount: {
+          get: function () {
+            return context._threadCount;
+          },
+          set: function (_threadCount) {
+            context._threadCount = _threadCount;
+          }
+        },
+        Consumer: {
+          get: function () {
+            if (!hasWarnedAboutUsingNestedContextConsumers) {
+              hasWarnedAboutUsingNestedContextConsumers = true;
+
+              error('Rendering <Context.Consumer.Consumer> is not supported and will be removed in ' + 'a future major release. Did you mean to render <Context.Consumer> instead?');
+            }
+
+            return context.Consumer;
+          }
+        }
+      }); // $FlowFixMe: Flow complains about missing properties because it doesn't understand defineProperty
+
+      context.Consumer = Consumer;
+    }
+
+    {
+      context._currentRenderer = null;
+      context._currentRenderer2 = null;
+    }
+
+    return context;
+  }
+
+  function lazy(ctor) {
+    var lazyType = {
+      $$typeof: REACT_LAZY_TYPE,
+      _ctor: ctor,
+      // React uses these fields to store the result.
+      _status: -1,
+      _result: null
+    };
+
+    {
+      // In production, this would just set it on the object.
+      var defaultProps;
+      var propTypes;
+      Object.defineProperties(lazyType, {
+        defaultProps: {
+          configurable: true,
+          get: function () {
+            return defaultProps;
+          },
+          set: function (newDefaultProps) {
+            error('React.lazy(...): It is not supported to assign `defaultProps` to ' + 'a lazy component import. Either specify them where the component ' + 'is defined, or create a wrapping component around it.');
+
+            defaultProps = newDefaultProps; // Match production behavior more closely:
+
+            Object.defineProperty(lazyType, 'defaultProps', {
+              enumerable: true
+            });
+          }
+        },
+        propTypes: {
+          configurable: true,
+          get: function () {
+            return propTypes;
+          },
+          set: function (newPropTypes) {
+            error('React.lazy(...): It is not supported to assign `propTypes` to ' + 'a lazy component import. Either specify them where the component ' + 'is defined, or create a wrapping component around it.');
+
+            propTypes = newPropTypes; // Match production behavior more closely:
+
+            Object.defineProperty(lazyType, 'propTypes', {
+              enumerable: true
+            });
+          }
+        }
+      });
+    }
+
+    return lazyType;
+  }
+
+  function forwardRef(render) {
+    {
+      if (render != null && render.$$typeof === REACT_MEMO_TYPE) {
+        error('forwardRef requires a render function but received a `memo` ' + 'component. Instead of forwardRef(memo(...)), use ' + 'memo(forwardRef(...)).');
+      } else if (typeof render !== 'function') {
+        error('forwardRef requires a render function but was given %s.', render === null ? 'null' : typeof render);
+      } else {
+        if (render.length !== 0 && render.length !== 2) {
+          error('forwardRef render functions accept exactly two parameters: props and ref. %s', render.length === 1 ? 'Did you forget to use the ref parameter?' : 'Any additional parameter will be undefined.');
+        }
+      }
+
+      if (render != null) {
+        if (render.defaultProps != null || render.propTypes != null) {
+          error('forwardRef render functions do not support propTypes or defaultProps. ' + 'Did you accidentally pass a React component?');
+        }
+      }
+    }
+
+    return {
+      $$typeof: REACT_FORWARD_REF_TYPE,
+      render: render
+    };
+  }
+
+  function isValidElementType(type) {
+    return typeof type === 'string' || typeof type === 'function' || // Note: its typeof might be other than 'symbol' or 'number' if it's a polyfill.
+    type === REACT_FRAGMENT_TYPE || type === REACT_CONCURRENT_MODE_TYPE || type === REACT_PROFILER_TYPE || type === REACT_STRICT_MODE_TYPE || type === REACT_SUSPENSE_TYPE || type === REACT_SUSPENSE_LIST_TYPE || typeof type === 'object' && type !== null && (type.$$typeof === REACT_LAZY_TYPE || type.$$typeof === REACT_MEMO_TYPE || type.$$typeof === REACT_PROVIDER_TYPE || type.$$typeof === REACT_CONTEXT_TYPE || type.$$typeof === REACT_FORWARD_REF_TYPE || type.$$typeof === REACT_FUNDAMENTAL_TYPE || type.$$typeof === REACT_RESPONDER_TYPE || type.$$typeof === REACT_SCOPE_TYPE || type.$$typeof === REACT_BLOCK_TYPE);
+  }
+
+  function memo(type, compare) {
+    {
+      if (!isValidElementType(type)) {
+        error('memo: The first argument must be a component. Instead ' + 'received: %s', type === null ? 'null' : typeof type);
+      }
+    }
+
+    return {
+      $$typeof: REACT_MEMO_TYPE,
+      type: type,
+      compare: compare === undefined ? null : compare
+    };
+  }
+
+  function resolveDispatcher() {
+    var dispatcher = ReactCurrentDispatcher.current;
+
+    if (!(dispatcher !== null)) {
+      {
+        throw Error( "Invalid hook call. Hooks can only be called inside of the body of a function component. This could happen for one of the following reasons:\n1. You might have mismatching versions of React and the renderer (such as React DOM)\n2. You might be breaking the Rules of Hooks\n3. You might have more than one copy of React in the same app\nSee https://fb.me/react-invalid-hook-call for tips about how to debug and fix this problem." );
+      }
+    }
+
+    return dispatcher;
+  }
+
+  function useContext(Context, unstable_observedBits) {
+    var dispatcher = resolveDispatcher();
+
+    {
+      if (unstable_observedBits !== undefined) {
+        error('useContext() second argument is reserved for future ' + 'use in React. Passing it is not supported. ' + 'You passed: %s.%s', unstable_observedBits, typeof unstable_observedBits === 'number' && Array.isArray(arguments[2]) ? '\n\nDid you call array.map(useContext)? ' + 'Calling Hooks inside a loop is not supported. ' + 'Learn more at https://fb.me/rules-of-hooks' : '');
+      } // TODO: add a more generic warning for invalid values.
+
+
+      if (Context._context !== undefined) {
+        var realContext = Context._context; // Don't deduplicate because this legitimately causes bugs
+        // and nobody should be using this in existing code.
+
+        if (realContext.Consumer === Context) {
+          error('Calling useContext(Context.Consumer) is not supported, may cause bugs, and will be ' + 'removed in a future major release. Did you mean to call useContext(Context) instead?');
+        } else if (realContext.Provider === Context) {
+          error('Calling useContext(Context.Provider) is not supported. ' + 'Did you mean to call useContext(Context) instead?');
+        }
+      }
+    }
+
+    return dispatcher.useContext(Context, unstable_observedBits);
+  }
+  function useState(initialState) {
+    var dispatcher = resolveDispatcher();
+    return dispatcher.useState(initialState);
+  }
+  function useReducer(reducer, initialArg, init) {
+    var dispatcher = resolveDispatcher();
+    return dispatcher.useReducer(reducer, initialArg, init);
+  }
+  function useRef(initialValue) {
+    var dispatcher = resolveDispatcher();
+    return dispatcher.useRef(initialValue);
+  }
+  function useEffect(create, deps) {
+    var dispatcher = resolveDispatcher();
+    return dispatcher.useEffect(create, deps);
+  }
+  function useLayoutEffect(create, deps) {
+    var dispatcher = resolveDispatcher();
+    return dispatcher.useLayoutEffect(create, deps);
+  }
+  function useCallback(callback, deps) {
+    var dispatcher = resolveDispatcher();
+    return dispatcher.useCallback(callback, deps);
+  }
+  function useMemo(create, deps) {
+    var dispatcher = resolveDispatcher();
+    return dispatcher.useMemo(create, deps);
+  }
+  function useImperativeHandle(ref, create, deps) {
+    var dispatcher = resolveDispatcher();
+    return dispatcher.useImperativeHandle(ref, create, deps);
+  }
+  function useDebugValue(value, formatterFn) {
+    {
+      var dispatcher = resolveDispatcher();
+      return dispatcher.useDebugValue(value, formatterFn);
+    }
+  }
+
+  /**
+   * Copyright (c) 2013-present, Facebook, Inc.
+   *
+   * This source code is licensed under the MIT license found in the
+   * LICENSE file in the root directory of this source tree.
+   */
+
+  var ReactPropTypesSecret = 'SECRET_DO_NOT_PASS_THIS_OR_YOU_WILL_BE_FIRED';
+
+  var ReactPropTypesSecret_1 = ReactPropTypesSecret;
+
+  var printWarning$1 = function() {};
+
+  {
+    var ReactPropTypesSecret$1 = ReactPropTypesSecret_1;
+    var loggedTypeFailures = {};
+    var has = Function.call.bind(Object.prototype.hasOwnProperty);
+
+    printWarning$1 = function(text) {
+      var message = 'Warning: ' + text;
+      if (typeof console !== 'undefined') {
+        console.error(message);
+      }
+      try {
+        // --- Welcome to debugging React ---
+        // This error was thrown as a convenience so that you can use this stack
+        // to find the callsite that caused this warning to fire.
+        throw new Error(message);
+      } catch (x) {}
+    };
+  }
+
+  /**
+   * Assert that the values match with the type specs.
+   * Error messages are memorized and will only be shown once.
+   *
+   * @param {object} typeSpecs Map of name to a ReactPropType
+   * @param {object} values Runtime values that need to be type-checked
+   * @param {string} location e.g. "prop", "context", "child context"
+   * @param {string} componentName Name of the component for error messages.
+   * @param {?Function} getStack Returns the component stack.
+   * @private
+   */
+  function checkPropTypes(typeSpecs, values, location, componentName, getStack) {
+    {
+      for (var typeSpecName in typeSpecs) {
+        if (has(typeSpecs, typeSpecName)) {
+          var error;
+          // Prop type validation may throw. In case they do, we don't want to
+          // fail the render phase where it didn't fail before. So we log it.
+          // After these have been cleaned up, we'll let them throw.
+          try {
+            // This is intentionally an invariant that gets caught. It's the same
+            // behavior as without this statement except with a better message.
+            if (typeof typeSpecs[typeSpecName] !== 'function') {
+              var err = Error(
+                (componentName || 'React class') + ': ' + location + ' type `' + typeSpecName + '` is invalid; ' +
+                'it must be a function, usually from the `prop-types` package, but received `' + typeof typeSpecs[typeSpecName] + '`.'
+              );
+              err.name = 'Invariant Violation';
+              throw err;
+            }
+            error = typeSpecs[typeSpecName](values, typeSpecName, componentName, location, null, ReactPropTypesSecret$1);
+          } catch (ex) {
+            error = ex;
+          }
+          if (error && !(error instanceof Error)) {
+            printWarning$1(
+              (componentName || 'React class') + ': type specification of ' +
+              location + ' `' + typeSpecName + '` is invalid; the type checker ' +
+              'function must return `null` or an `Error` but returned a ' + typeof error + '. ' +
+              'You may have forgotten to pass an argument to the type checker ' +
+              'creator (arrayOf, instanceOf, objectOf, oneOf, oneOfType, and ' +
+              'shape all require an argument).'
+            );
+          }
+          if (error instanceof Error && !(error.message in loggedTypeFailures)) {
+            // Only monitor this failure once because there tends to be a lot of the
+            // same error.
+            loggedTypeFailures[error.message] = true;
+
+            var stack = getStack ? getStack() : '';
+
+            printWarning$1(
+              'Failed ' + location + ' type: ' + error.message + (stack != null ? stack : '')
+            );
+          }
+        }
+      }
+    }
+  }
+
+  /**
+   * Resets warning cache when testing.
+   *
+   * @private
+   */
+  checkPropTypes.resetWarningCache = function() {
+    {
+      loggedTypeFailures = {};
+    }
+  };
+
+  var checkPropTypes_1 = checkPropTypes;
+
+  var propTypesMisspellWarningShown;
+
+  {
+    propTypesMisspellWarningShown = false;
+  }
+
+  function getDeclarationErrorAddendum() {
+    if (ReactCurrentOwner.current) {
+      var name = getComponentName(ReactCurrentOwner.current.type);
+
+      if (name) {
+        return '\n\nCheck the render method of `' + name + '`.';
+      }
+    }
+
+    return '';
+  }
+
+  function getSourceInfoErrorAddendum(source) {
+    if (source !== undefined) {
+      var fileName = source.fileName.replace(/^.*[\\\/]/, '');
+      var lineNumber = source.lineNumber;
+      return '\n\nCheck your code at ' + fileName + ':' + lineNumber + '.';
+    }
+
+    return '';
+  }
+
+  function getSourceInfoErrorAddendumForProps(elementProps) {
+    if (elementProps !== null && elementProps !== undefined) {
+      return getSourceInfoErrorAddendum(elementProps.__source);
+    }
+
+    return '';
+  }
+  /**
+   * Warn if there's no key explicitly set on dynamic arrays of children or
+   * object keys are not valid. This allows us to keep track of children between
+   * updates.
+   */
+
+
+  var ownerHasKeyUseWarning = {};
+
+  function getCurrentComponentErrorInfo(parentType) {
+    var info = getDeclarationErrorAddendum();
+
+    if (!info) {
+      var parentName = typeof parentType === 'string' ? parentType : parentType.displayName || parentType.name;
+
+      if (parentName) {
+        info = "\n\nCheck the top-level render call using <" + parentName + ">.";
+      }
+    }
+
+    return info;
+  }
+  /**
+   * Warn if the element doesn't have an explicit key assigned to it.
+   * This element is in an array. The array could grow and shrink or be
+   * reordered. All children that haven't already been validated are required to
+   * have a "key" property assigned to it. Error statuses are cached so a warning
+   * will only be shown once.
+   *
+   * @internal
+   * @param {ReactElement} element Element that requires a key.
+   * @param {*} parentType element's parent's type.
+   */
+
+
+  function validateExplicitKey(element, parentType) {
+    if (!element._store || element._store.validated || element.key != null) {
+      return;
+    }
+
+    element._store.validated = true;
+    var currentComponentErrorInfo = getCurrentComponentErrorInfo(parentType);
+
+    if (ownerHasKeyUseWarning[currentComponentErrorInfo]) {
+      return;
+    }
+
+    ownerHasKeyUseWarning[currentComponentErrorInfo] = true; // Usually the current owner is the offender, but if it accepts children as a
+    // property, it may be the creator of the child that's responsible for
+    // assigning it a key.
+
+    var childOwner = '';
+
+    if (element && element._owner && element._owner !== ReactCurrentOwner.current) {
+      // Give the component that originally created this child.
+      childOwner = " It was passed a child from " + getComponentName(element._owner.type) + ".";
+    }
+
+    setCurrentlyValidatingElement(element);
+
+    {
+      error('Each child in a list should have a unique "key" prop.' + '%s%s See https://fb.me/react-warning-keys for more information.', currentComponentErrorInfo, childOwner);
+    }
+
+    setCurrentlyValidatingElement(null);
+  }
+  /**
+   * Ensure that every element either is passed in a static location, in an
+   * array with an explicit keys property defined, or in an object literal
+   * with valid key property.
+   *
+   * @internal
+   * @param {ReactNode} node Statically passed child of any type.
+   * @param {*} parentType node's parent's type.
+   */
+
+
+  function validateChildKeys(node, parentType) {
+    if (typeof node !== 'object') {
+      return;
+    }
+
+    if (Array.isArray(node)) {
+      for (var i = 0; i < node.length; i++) {
+        var child = node[i];
+
+        if (isValidElement(child)) {
+          validateExplicitKey(child, parentType);
+        }
+      }
+    } else if (isValidElement(node)) {
+      // This element was passed in a valid location.
+      if (node._store) {
+        node._store.validated = true;
+      }
+    } else if (node) {
+      var iteratorFn = getIteratorFn(node);
+
+      if (typeof iteratorFn === 'function') {
+        // Entry iterators used to provide implicit keys,
+        // but now we print a separate warning for them later.
+        if (iteratorFn !== node.entries) {
+          var iterator = iteratorFn.call(node);
+          var step;
+
+          while (!(step = iterator.next()).done) {
+            if (isValidElement(step.value)) {
+              validateExplicitKey(step.value, parentType);
+            }
+          }
+        }
+      }
+    }
+  }
+  /**
+   * Given an element, validate that its props follow the propTypes definition,
+   * provided by the type.
+   *
+   * @param {ReactElement} element
+   */
+
+
+  function validatePropTypes(element) {
+    {
+      var type = element.type;
+
+      if (type === null || type === undefined || typeof type === 'string') {
+        return;
+      }
+
+      var name = getComponentName(type);
+      var propTypes;
+
+      if (typeof type === 'function') {
+        propTypes = type.propTypes;
+      } else if (typeof type === 'object' && (type.$$typeof === REACT_FORWARD_REF_TYPE || // Note: Memo only checks outer props here.
+      // Inner props are checked in the reconciler.
+      type.$$typeof === REACT_MEMO_TYPE)) {
+        propTypes = type.propTypes;
+      } else {
+        return;
+      }
+
+      if (propTypes) {
+        setCurrentlyValidatingElement(element);
+        checkPropTypes_1(propTypes, element.props, 'prop', name, ReactDebugCurrentFrame.getStackAddendum);
+        setCurrentlyValidatingElement(null);
+      } else if (type.PropTypes !== undefined && !propTypesMisspellWarningShown) {
+        propTypesMisspellWarningShown = true;
+
+        error('Component %s declared `PropTypes` instead of `propTypes`. Did you misspell the property assignment?', name || 'Unknown');
+      }
+
+      if (typeof type.getDefaultProps === 'function' && !type.getDefaultProps.isReactClassApproved) {
+        error('getDefaultProps is only used on classic React.createClass ' + 'definitions. Use a static property named `defaultProps` instead.');
+      }
+    }
+  }
+  /**
+   * Given a fragment, validate that it can only be provided with fragment props
+   * @param {ReactElement} fragment
+   */
+
+
+  function validateFragmentProps(fragment) {
+    {
+      setCurrentlyValidatingElement(fragment);
+      var keys = Object.keys(fragment.props);
+
+      for (var i = 0; i < keys.length; i++) {
+        var key = keys[i];
+
+        if (key !== 'children' && key !== 'key') {
+          error('Invalid prop `%s` supplied to `React.Fragment`. ' + 'React.Fragment can only have `key` and `children` props.', key);
+
+          break;
+        }
+      }
+
+      if (fragment.ref !== null) {
+        error('Invalid attribute `ref` supplied to `React.Fragment`.');
+      }
+
+      setCurrentlyValidatingElement(null);
+    }
+  }
+  function createElementWithValidation(type, props, children) {
+    var validType = isValidElementType(type); // We warn in this case but don't throw. We expect the element creation to
+    // succeed and there will likely be errors in render.
+
+    if (!validType) {
+      var info = '';
+
+      if (type === undefined || typeof type === 'object' && type !== null && Object.keys(type).length === 0) {
+        info += ' You likely forgot to export your component from the file ' + "it's defined in, or you might have mixed up default and named imports.";
+      }
+
+      var sourceInfo = getSourceInfoErrorAddendumForProps(props);
+
+      if (sourceInfo) {
+        info += sourceInfo;
+      } else {
+        info += getDeclarationErrorAddendum();
+      }
+
+      var typeString;
+
+      if (type === null) {
+        typeString = 'null';
+      } else if (Array.isArray(type)) {
+        typeString = 'array';
+      } else if (type !== undefined && type.$$typeof === REACT_ELEMENT_TYPE) {
+        typeString = "<" + (getComponentName(type.type) || 'Unknown') + " />";
+        info = ' Did you accidentally export a JSX literal instead of a component?';
+      } else {
+        typeString = typeof type;
+      }
+
+      {
+        error('React.createElement: type is invalid -- expected a string (for ' + 'built-in components) or a class/function (for composite ' + 'components) but got: %s.%s', typeString, info);
+      }
+    }
+
+    var element = createElement.apply(this, arguments); // The result can be nullish if a mock or a custom function is used.
+    // TODO: Drop this when these are no longer allowed as the type argument.
+
+    if (element == null) {
+      return element;
+    } // Skip key warning if the type isn't valid since our key validation logic
+    // doesn't expect a non-string/function type and can throw confusing errors.
+    // We don't want exception behavior to differ between dev and prod.
+    // (Rendering will throw with a helpful message and as soon as the type is
+    // fixed, the key warnings will appear.)
+
+
+    if (validType) {
+      for (var i = 2; i < arguments.length; i++) {
+        validateChildKeys(arguments[i], type);
+      }
+    }
+
+    if (type === REACT_FRAGMENT_TYPE) {
+      validateFragmentProps(element);
+    } else {
+      validatePropTypes(element);
+    }
+
+    return element;
+  }
+  var didWarnAboutDeprecatedCreateFactory = false;
+  function createFactoryWithValidation(type) {
+    var validatedFactory = createElementWithValidation.bind(null, type);
+    validatedFactory.type = type;
+
+    {
+      if (!didWarnAboutDeprecatedCreateFactory) {
+        didWarnAboutDeprecatedCreateFactory = true;
+
+        warn('React.createFactory() is deprecated and will be removed in ' + 'a future major release. Consider using JSX ' + 'or use React.createElement() directly instead.');
+      } // Legacy hook: remove it
+
+
+      Object.defineProperty(validatedFactory, 'type', {
+        enumerable: false,
+        get: function () {
+          warn('Factory.type is deprecated. Access the class directly ' + 'before passing it to createFactory.');
+
+          Object.defineProperty(this, 'type', {
+            value: type
+          });
+          return type;
+        }
+      });
+    }
+
+    return validatedFactory;
+  }
+  function cloneElementWithValidation(element, props, children) {
+    var newElement = cloneElement.apply(this, arguments);
+
+    for (var i = 2; i < arguments.length; i++) {
+      validateChildKeys(arguments[i], newElement.type);
+    }
+
+    validatePropTypes(newElement);
+    return newElement;
+  }
+
+  var enableSchedulerDebugging = false;
+  var enableProfiling = true;
+
+  var requestHostCallback;
+  var requestHostTimeout;
+  var cancelHostTimeout;
+  var shouldYieldToHost;
+  var requestPaint;
+  var getCurrentTime;
+  var forceFrameRate;
+
+  if ( // If Scheduler runs in a non-DOM environment, it falls back to a naive
+  // implementation using setTimeout.
+  typeof window === 'undefined' || // Check if MessageChannel is supported, too.
+  typeof MessageChannel !== 'function') {
+    // If this accidentally gets imported in a non-browser environment, e.g. JavaScriptCore,
+    // fallback to a naive implementation.
+    var _callback = null;
+    var _timeoutID = null;
+
+    var _flushCallback = function () {
+      if (_callback !== null) {
+        try {
+          var currentTime = getCurrentTime();
+          var hasRemainingTime = true;
+
+          _callback(hasRemainingTime, currentTime);
+
+          _callback = null;
+        } catch (e) {
+          setTimeout(_flushCallback, 0);
+          throw e;
+        }
+      }
+    };
+
+    var initialTime = Date.now();
+
+    getCurrentTime = function () {
+      return Date.now() - initialTime;
+    };
+
+    requestHostCallback = function (cb) {
+      if (_callback !== null) {
+        // Protect against re-entrancy.
+        setTimeout(requestHostCallback, 0, cb);
+      } else {
+        _callback = cb;
+        setTimeout(_flushCallback, 0);
+      }
+    };
+
+    requestHostTimeout = function (cb, ms) {
+      _timeoutID = setTimeout(cb, ms);
+    };
+
+    cancelHostTimeout = function () {
+      clearTimeout(_timeoutID);
+    };
+
+    shouldYieldToHost = function () {
+      return false;
+    };
+
+    requestPaint = forceFrameRate = function () {};
+  } else {
+    // Capture local references to native APIs, in case a polyfill overrides them.
+    var performance = window.performance;
+    var _Date = window.Date;
+    var _setTimeout = window.setTimeout;
+    var _clearTimeout = window.clearTimeout;
+
+    if (typeof console !== 'undefined') {
+      // TODO: Scheduler no longer requires these methods to be polyfilled. But
+      // maybe we want to continue warning if they don't exist, to preserve the
+      // option to rely on it in the future?
+      var requestAnimationFrame = window.requestAnimationFrame;
+      var cancelAnimationFrame = window.cancelAnimationFrame; // TODO: Remove fb.me link
+
+      if (typeof requestAnimationFrame !== 'function') {
+        // Using console['error'] to evade Babel and ESLint
+        console['error']("This browser doesn't support requestAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://fb.me/react-polyfills');
+      }
+
+      if (typeof cancelAnimationFrame !== 'function') {
+        // Using console['error'] to evade Babel and ESLint
+        console['error']("This browser doesn't support cancelAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://fb.me/react-polyfills');
+      }
+    }
+
+    if (typeof performance === 'object' && typeof performance.now === 'function') {
+      getCurrentTime = function () {
+        return performance.now();
+      };
+    } else {
+      var _initialTime = _Date.now();
+
+      getCurrentTime = function () {
+        return _Date.now() - _initialTime;
+      };
+    }
+
+    var isMessageLoopRunning = false;
+    var scheduledHostCallback = null;
+    var taskTimeoutID = -1; // Scheduler periodically yields in case there is other work on the main
+    // thread, like user events. By default, it yields multiple times per frame.
+    // It does not attempt to align with frame boundaries, since most tasks don't
+    // need to be frame aligned; for those that do, use requestAnimationFrame.
+
+    var yieldInterval = 5;
+    var deadline = 0; // TODO: Make this configurable
+
+    {
+      // `isInputPending` is not available. Since we have no way of knowing if
+      // there's pending input, always yield at the end of the frame.
+      shouldYieldToHost = function () {
+        return getCurrentTime() >= deadline;
+      }; // Since we yield every frame regardless, `requestPaint` has no effect.
+
+
+      requestPaint = function () {};
+    }
+
+    forceFrameRate = function (fps) {
+      if (fps < 0 || fps > 125) {
+        // Using console['error'] to evade Babel and ESLint
+        console['error']('forceFrameRate takes a positive int between 0 and 125, ' + 'forcing framerates higher than 125 fps is not unsupported');
+        return;
+      }
+
+      if (fps > 0) {
+        yieldInterval = Math.floor(1000 / fps);
+      } else {
+        // reset the framerate
+        yieldInterval = 5;
+      }
+    };
+
+    var performWorkUntilDeadline = function () {
+      if (scheduledHostCallback !== null) {
+        var currentTime = getCurrentTime(); // Yield after `yieldInterval` ms, regardless of where we are in the vsync
+        // cycle. This means there's always time remaining at the beginning of
+        // the message event.
+
+        deadline = currentTime + yieldInterval;
+        var hasTimeRemaining = true;
+
+        try {
+          var hasMoreWork = scheduledHostCallback(hasTimeRemaining, currentTime);
+
+          if (!hasMoreWork) {
+            isMessageLoopRunning = false;
+            scheduledHostCallback = null;
+          } else {
+            // If there's more work, schedule the next message event at the end
+            // of the preceding one.
+            port.postMessage(null);
+          }
+        } catch (error) {
+          // If a scheduler task throws, exit the current browser task so the
+          // error can be observed.
+          port.postMessage(null);
+          throw error;
+        }
+      } else {
+        isMessageLoopRunning = false;
+      } // Yielding to the browser will give it a chance to paint, so we can
+    };
+
+    var channel = new MessageChannel();
+    var port = channel.port2;
+    channel.port1.onmessage = performWorkUntilDeadline;
+
+    requestHostCallback = function (callback) {
+      scheduledHostCallback = callback;
+
+      if (!isMessageLoopRunning) {
+        isMessageLoopRunning = true;
+        port.postMessage(null);
+      }
+    };
+
+    requestHostTimeout = function (callback, ms) {
+      taskTimeoutID = _setTimeout(function () {
+        callback(getCurrentTime());
+      }, ms);
+    };
+
+    cancelHostTimeout = function () {
+      _clearTimeout(taskTimeoutID);
+
+      taskTimeoutID = -1;
+    };
+  }
+
+  function push(heap, node) {
+    var index = heap.length;
+    heap.push(node);
+    siftUp(heap, node, index);
+  }
+  function peek(heap) {
+    var first = heap[0];
+    return first === undefined ? null : first;
+  }
+  function pop(heap) {
+    var first = heap[0];
+
+    if (first !== undefined) {
+      var last = heap.pop();
+
+      if (last !== first) {
+        heap[0] = last;
+        siftDown(heap, last, 0);
+      }
+
+      return first;
+    } else {
+      return null;
+    }
+  }
+
+  function siftUp(heap, node, i) {
+    var index = i;
+
+    while (true) {
+      var parentIndex = index - 1 >>> 1;
+      var parent = heap[parentIndex];
+
+      if (parent !== undefined && compare(parent, node) > 0) {
+        // The parent is larger. Swap positions.
+        heap[parentIndex] = node;
+        heap[index] = parent;
+        index = parentIndex;
+      } else {
+        // The parent is smaller. Exit.
+        return;
+      }
+    }
+  }
+
+  function siftDown(heap, node, i) {
+    var index = i;
+    var length = heap.length;
+
+    while (index < length) {
+      var leftIndex = (index + 1) * 2 - 1;
+      var left = heap[leftIndex];
+      var rightIndex = leftIndex + 1;
+      var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those.
+
+      if (left !== undefined && compare(left, node) < 0) {
+        if (right !== undefined && compare(right, left) < 0) {
+          heap[index] = right;
+          heap[rightIndex] = node;
+          index = rightIndex;
+        } else {
+          heap[index] = left;
+          heap[leftIndex] = node;
+          index = leftIndex;
+        }
+      } else if (right !== undefined && compare(right, node) < 0) {
+        heap[index] = right;
+        heap[rightIndex] = node;
+        index = rightIndex;
+      } else {
+        // Neither child is smaller. Exit.
+        return;
+      }
+    }
+  }
+
+  function compare(a, b) {
+    // Compare sort index first, then task id.
+    var diff = a.sortIndex - b.sortIndex;
+    return diff !== 0 ? diff : a.id - b.id;
+  }
+
+  // TODO: Use symbols?
+  var NoPriority = 0;
+  var ImmediatePriority = 1;
+  var UserBlockingPriority = 2;
+  var NormalPriority = 3;
+  var LowPriority = 4;
+  var IdlePriority = 5;
+
+  var runIdCounter = 0;
+  var mainThreadIdCounter = 0;
+  var profilingStateSize = 4;
+  var sharedProfilingBuffer =  // $FlowFixMe Flow doesn't know about SharedArrayBuffer
+  typeof SharedArrayBuffer === 'function' ? new SharedArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : // $FlowFixMe Flow doesn't know about ArrayBuffer
+  typeof ArrayBuffer === 'function' ? new ArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : null // Don't crash the init path on IE9
+  ;
+  var profilingState =  sharedProfilingBuffer !== null ? new Int32Array(sharedProfilingBuffer) : []; // We can't read this but it helps save bytes for null checks
+
+  var PRIORITY = 0;
+  var CURRENT_TASK_ID = 1;
+  var CURRENT_RUN_ID = 2;
+  var QUEUE_SIZE = 3;
+
+  {
+    profilingState[PRIORITY] = NoPriority; // This is maintained with a counter, because the size of the priority queue
+    // array might include canceled tasks.
+
+    profilingState[QUEUE_SIZE] = 0;
+    profilingState[CURRENT_TASK_ID] = 0;
+  } // Bytes per element is 4
+
+
+  var INITIAL_EVENT_LOG_SIZE = 131072;
+  var MAX_EVENT_LOG_SIZE = 524288; // Equivalent to 2 megabytes
+
+  var eventLogSize = 0;
+  var eventLogBuffer = null;
+  var eventLog = null;
+  var eventLogIndex = 0;
+  var TaskStartEvent = 1;
+  var TaskCompleteEvent = 2;
+  var TaskErrorEvent = 3;
+  var TaskCancelEvent = 4;
+  var TaskRunEvent = 5;
+  var TaskYieldEvent = 6;
+  var SchedulerSuspendEvent = 7;
+  var SchedulerResumeEvent = 8;
+
+  function logEvent(entries) {
+    if (eventLog !== null) {
+      var offset = eventLogIndex;
+      eventLogIndex += entries.length;
+
+      if (eventLogIndex + 1 > eventLogSize) {
+        eventLogSize *= 2;
+
+        if (eventLogSize > MAX_EVENT_LOG_SIZE) {
+          // Using console['error'] to evade Babel and ESLint
+          console['error']("Scheduler Profiling: Event log exceeded maximum size. Don't " + 'forget to call `stopLoggingProfilingEvents()`.');
+          stopLoggingProfilingEvents();
+          return;
+        }
+
+        var newEventLog = new Int32Array(eventLogSize * 4);
+        newEventLog.set(eventLog);
+        eventLogBuffer = newEventLog.buffer;
+        eventLog = newEventLog;
+      }
+
+      eventLog.set(entries, offset);
+    }
+  }
+
+  function startLoggingProfilingEvents() {
+    eventLogSize = INITIAL_EVENT_LOG_SIZE;
+    eventLogBuffer = new ArrayBuffer(eventLogSize * 4);
+    eventLog = new Int32Array(eventLogBuffer);
+    eventLogIndex = 0;
+  }
+  function stopLoggingProfilingEvents() {
+    var buffer = eventLogBuffer;
+    eventLogSize = 0;
+    eventLogBuffer = null;
+    eventLog = null;
+    eventLogIndex = 0;
+    return buffer;
+  }
+  function markTaskStart(task, ms) {
+    {
+      profilingState[QUEUE_SIZE]++;
+
+      if (eventLog !== null) {
+        // performance.now returns a float, representing milliseconds. When the
+        // event is logged, it's coerced to an int. Convert to microseconds to
+        // maintain extra degrees of precision.
+        logEvent([TaskStartEvent, ms * 1000, task.id, task.priorityLevel]);
+      }
+    }
+  }
+  function markTaskCompleted(task, ms) {
+    {
+      profilingState[PRIORITY] = NoPriority;
+      profilingState[CURRENT_TASK_ID] = 0;
+      profilingState[QUEUE_SIZE]--;
+
+      if (eventLog !== null) {
+        logEvent([TaskCompleteEvent, ms * 1000, task.id]);
+      }
+    }
+  }
+  function markTaskCanceled(task, ms) {
+    {
+      profilingState[QUEUE_SIZE]--;
+
+      if (eventLog !== null) {
+        logEvent([TaskCancelEvent, ms * 1000, task.id]);
+      }
+    }
+  }
+  function markTaskErrored(task, ms) {
+    {
+      profilingState[PRIORITY] = NoPriority;
+      profilingState[CURRENT_TASK_ID] = 0;
+      profilingState[QUEUE_SIZE]--;
+
+      if (eventLog !== null) {
+        logEvent([TaskErrorEvent, ms * 1000, task.id]);
+      }
+    }
+  }
+  function markTaskRun(task, ms) {
+    {
+      runIdCounter++;
+      profilingState[PRIORITY] = task.priorityLevel;
+      profilingState[CURRENT_TASK_ID] = task.id;
+      profilingState[CURRENT_RUN_ID] = runIdCounter;
+
+      if (eventLog !== null) {
+        logEvent([TaskRunEvent, ms * 1000, task.id, runIdCounter]);
+      }
+    }
+  }
+  function markTaskYield(task, ms) {
+    {
+      profilingState[PRIORITY] = NoPriority;
+      profilingState[CURRENT_TASK_ID] = 0;
+      profilingState[CURRENT_RUN_ID] = 0;
+
+      if (eventLog !== null) {
+        logEvent([TaskYieldEvent, ms * 1000, task.id, runIdCounter]);
+      }
+    }
+  }
+  function markSchedulerSuspended(ms) {
+    {
+      mainThreadIdCounter++;
+
+      if (eventLog !== null) {
+        logEvent([SchedulerSuspendEvent, ms * 1000, mainThreadIdCounter]);
+      }
+    }
+  }
+  function markSchedulerUnsuspended(ms) {
+    {
+      if (eventLog !== null) {
+        logEvent([SchedulerResumeEvent, ms * 1000, mainThreadIdCounter]);
+      }
+    }
+  }
+
+  /* eslint-disable no-var */
+  // Math.pow(2, 30) - 1
+  // 0b111111111111111111111111111111
+
+  var maxSigned31BitInt = 1073741823; // Times out immediately
+
+  var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out
+
+  var USER_BLOCKING_PRIORITY = 250;
+  var NORMAL_PRIORITY_TIMEOUT = 5000;
+  var LOW_PRIORITY_TIMEOUT = 10000; // Never times out
+
+  var IDLE_PRIORITY = maxSigned31BitInt; // Tasks are stored on a min heap
+
+  var taskQueue = [];
+  var timerQueue = []; // Incrementing id counter. Used to maintain insertion order.
+
+  var taskIdCounter = 1; // Pausing the scheduler is useful for debugging.
+  var currentTask = null;
+  var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy.
+
+  var isPerformingWork = false;
+  var isHostCallbackScheduled = false;
+  var isHostTimeoutScheduled = false;
+
+  function advanceTimers(currentTime) {
+    // Check for tasks that are no longer delayed and add them to the queue.
+    var timer = peek(timerQueue);
+
+    while (timer !== null) {
+      if (timer.callback === null) {
+        // Timer was cancelled.
+        pop(timerQueue);
+      } else if (timer.startTime <= currentTime) {
+        // Timer fired. Transfer to the task queue.
+        pop(timerQueue);
+        timer.sortIndex = timer.expirationTime;
+        push(taskQueue, timer);
+
+        {
+          markTaskStart(timer, currentTime);
+          timer.isQueued = true;
+        }
+      } else {
+        // Remaining timers are pending.
+        return;
+      }
+
+      timer = peek(timerQueue);
+    }
+  }
+
+  function handleTimeout(currentTime) {
+    isHostTimeoutScheduled = false;
+    advanceTimers(currentTime);
+
+    if (!isHostCallbackScheduled) {
+      if (peek(taskQueue) !== null) {
+        isHostCallbackScheduled = true;
+        requestHostCallback(flushWork);
+      } else {
+        var firstTimer = peek(timerQueue);
+
+        if (firstTimer !== null) {
+          requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+        }
+      }
+    }
+  }
+
+  function flushWork(hasTimeRemaining, initialTime) {
+    {
+      markSchedulerUnsuspended(initialTime);
+    } // We'll need a host callback the next time work is scheduled.
+
+
+    isHostCallbackScheduled = false;
+
+    if (isHostTimeoutScheduled) {
+      // We scheduled a timeout but it's no longer needed. Cancel it.
+      isHostTimeoutScheduled = false;
+      cancelHostTimeout();
+    }
+
+    isPerformingWork = true;
+    var previousPriorityLevel = currentPriorityLevel;
+
+    try {
+      if (enableProfiling) {
+        try {
+          return workLoop(hasTimeRemaining, initialTime);
+        } catch (error) {
+          if (currentTask !== null) {
+            var currentTime = getCurrentTime();
+            markTaskErrored(currentTask, currentTime);
+            currentTask.isQueued = false;
+          }
+
+          throw error;
+        }
+      } else {
+        // No catch in prod codepath.
+        return workLoop(hasTimeRemaining, initialTime);
+      }
+    } finally {
+      currentTask = null;
+      currentPriorityLevel = previousPriorityLevel;
+      isPerformingWork = false;
+
+      {
+        var _currentTime = getCurrentTime();
+
+        markSchedulerSuspended(_currentTime);
+      }
+    }
+  }
+
+  function workLoop(hasTimeRemaining, initialTime) {
+    var currentTime = initialTime;
+    advanceTimers(currentTime);
+    currentTask = peek(taskQueue);
+
+    while (currentTask !== null && !(enableSchedulerDebugging )) {
+      if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) {
+        // This currentTask hasn't expired, and we've reached the deadline.
+        break;
+      }
+
+      var callback = currentTask.callback;
+
+      if (callback !== null) {
+        currentTask.callback = null;
+        currentPriorityLevel = currentTask.priorityLevel;
+        var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
+        markTaskRun(currentTask, currentTime);
+        var continuationCallback = callback(didUserCallbackTimeout);
+        currentTime = getCurrentTime();
+
+        if (typeof continuationCallback === 'function') {
+          currentTask.callback = continuationCallback;
+          markTaskYield(currentTask, currentTime);
+        } else {
+          {
+            markTaskCompleted(currentTask, currentTime);
+            currentTask.isQueued = false;
+          }
+
+          if (currentTask === peek(taskQueue)) {
+            pop(taskQueue);
+          }
+        }
+
+        advanceTimers(currentTime);
+      } else {
+        pop(taskQueue);
+      }
+
+      currentTask = peek(taskQueue);
+    } // Return whether there's additional work
+
+
+    if (currentTask !== null) {
+      return true;
+    } else {
+      var firstTimer = peek(timerQueue);
+
+      if (firstTimer !== null) {
+        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+      }
+
+      return false;
+    }
+  }
+
+  function unstable_runWithPriority(priorityLevel, eventHandler) {
+    switch (priorityLevel) {
+      case ImmediatePriority:
+      case UserBlockingPriority:
+      case NormalPriority:
+      case LowPriority:
+      case IdlePriority:
+        break;
+
+      default:
+        priorityLevel = NormalPriority;
+    }
+
+    var previousPriorityLevel = currentPriorityLevel;
+    currentPriorityLevel = priorityLevel;
+
+    try {
+      return eventHandler();
+    } finally {
+      currentPriorityLevel = previousPriorityLevel;
+    }
+  }
+
+  function unstable_next(eventHandler) {
+    var priorityLevel;
+
+    switch (currentPriorityLevel) {
+      case ImmediatePriority:
+      case UserBlockingPriority:
+      case NormalPriority:
+        // Shift down to normal priority
+        priorityLevel = NormalPriority;
+        break;
+
+      default:
+        // Anything lower than normal priority should remain at the current level.
+        priorityLevel = currentPriorityLevel;
+        break;
+    }
+
+    var previousPriorityLevel = currentPriorityLevel;
+    currentPriorityLevel = priorityLevel;
+
+    try {
+      return eventHandler();
+    } finally {
+      currentPriorityLevel = previousPriorityLevel;
+    }
+  }
+
+  function unstable_wrapCallback(callback) {
+    var parentPriorityLevel = currentPriorityLevel;
+    return function () {
+      // This is a fork of runWithPriority, inlined for performance.
+      var previousPriorityLevel = currentPriorityLevel;
+      currentPriorityLevel = parentPriorityLevel;
+
+      try {
+        return callback.apply(this, arguments);
+      } finally {
+        currentPriorityLevel = previousPriorityLevel;
+      }
+    };
+  }
+
+  function timeoutForPriorityLevel(priorityLevel) {
+    switch (priorityLevel) {
+      case ImmediatePriority:
+        return IMMEDIATE_PRIORITY_TIMEOUT;
+
+      case UserBlockingPriority:
+        return USER_BLOCKING_PRIORITY;
+
+      case IdlePriority:
+        return IDLE_PRIORITY;
+
+      case LowPriority:
+        return LOW_PRIORITY_TIMEOUT;
+
+      case NormalPriority:
+      default:
+        return NORMAL_PRIORITY_TIMEOUT;
+    }
+  }
+
+  function unstable_scheduleCallback(priorityLevel, callback, options) {
+    var currentTime = getCurrentTime();
+    var startTime;
+    var timeout;
+
+    if (typeof options === 'object' && options !== null) {
+      var delay = options.delay;
+
+      if (typeof delay === 'number' && delay > 0) {
+        startTime = currentTime + delay;
+      } else {
+        startTime = currentTime;
+      }
+
+      timeout = typeof options.timeout === 'number' ? options.timeout : timeoutForPriorityLevel(priorityLevel);
+    } else {
+      timeout = timeoutForPriorityLevel(priorityLevel);
+      startTime = currentTime;
+    }
+
+    var expirationTime = startTime + timeout;
+    var newTask = {
+      id: taskIdCounter++,
+      callback: callback,
+      priorityLevel: priorityLevel,
+      startTime: startTime,
+      expirationTime: expirationTime,
+      sortIndex: -1
+    };
+
+    {
+      newTask.isQueued = false;
+    }
+
+    if (startTime > currentTime) {
+      // This is a delayed task.
+      newTask.sortIndex = startTime;
+      push(timerQueue, newTask);
+
+      if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
+        // All tasks are delayed, and this is the task with the earliest delay.
+        if (isHostTimeoutScheduled) {
+          // Cancel an existing timeout.
+          cancelHostTimeout();
+        } else {
+          isHostTimeoutScheduled = true;
+        } // Schedule a timeout.
+
+
+        requestHostTimeout(handleTimeout, startTime - currentTime);
+      }
+    } else {
+      newTask.sortIndex = expirationTime;
+      push(taskQueue, newTask);
+
+      {
+        markTaskStart(newTask, currentTime);
+        newTask.isQueued = true;
+      } // Schedule a host callback, if needed. If we're already performing work,
+      // wait until the next time we yield.
+
+
+      if (!isHostCallbackScheduled && !isPerformingWork) {
+        isHostCallbackScheduled = true;
+        requestHostCallback(flushWork);
+      }
+    }
+
+    return newTask;
+  }
+
+  function unstable_pauseExecution() {
+  }
+
+  function unstable_continueExecution() {
+
+    if (!isHostCallbackScheduled && !isPerformingWork) {
+      isHostCallbackScheduled = true;
+      requestHostCallback(flushWork);
+    }
+  }
+
+  function unstable_getFirstCallbackNode() {
+    return peek(taskQueue);
+  }
+
+  function unstable_cancelCallback(task) {
+    {
+      if (task.isQueued) {
+        var currentTime = getCurrentTime();
+        markTaskCanceled(task, currentTime);
+        task.isQueued = false;
+      }
+    } // Null out the callback to indicate the task has been canceled. (Can't
+    // remove from the queue because you can't remove arbitrary nodes from an
+    // array based heap, only the first one.)
+
+
+    task.callback = null;
+  }
+
+  function unstable_getCurrentPriorityLevel() {
+    return currentPriorityLevel;
+  }
+
+  function unstable_shouldYield() {
+    var currentTime = getCurrentTime();
+    advanceTimers(currentTime);
+    var firstTask = peek(taskQueue);
+    return firstTask !== currentTask && currentTask !== null && firstTask !== null && firstTask.callback !== null && firstTask.startTime <= currentTime && firstTask.expirationTime < currentTask.expirationTime || shouldYieldToHost();
+  }
+
+  var unstable_requestPaint = requestPaint;
+  var unstable_Profiling =  {
+    startLoggingProfilingEvents: startLoggingProfilingEvents,
+    stopLoggingProfilingEvents: stopLoggingProfilingEvents,
+    sharedProfilingBuffer: sharedProfilingBuffer
+  } ;
+
+
+
+  var Scheduler = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    unstable_ImmediatePriority: ImmediatePriority,
+    unstable_UserBlockingPriority: UserBlockingPriority,
+    unstable_NormalPriority: NormalPriority,
+    unstable_IdlePriority: IdlePriority,
+    unstable_LowPriority: LowPriority,
+    unstable_runWithPriority: unstable_runWithPriority,
+    unstable_next: unstable_next,
+    unstable_scheduleCallback: unstable_scheduleCallback,
+    unstable_cancelCallback: unstable_cancelCallback,
+    unstable_wrapCallback: unstable_wrapCallback,
+    unstable_getCurrentPriorityLevel: unstable_getCurrentPriorityLevel,
+    unstable_shouldYield: unstable_shouldYield,
+    unstable_requestPaint: unstable_requestPaint,
+    unstable_continueExecution: unstable_continueExecution,
+    unstable_pauseExecution: unstable_pauseExecution,
+    unstable_getFirstCallbackNode: unstable_getFirstCallbackNode,
+    get unstable_now () { return getCurrentTime; },
+    get unstable_forceFrameRate () { return forceFrameRate; },
+    unstable_Profiling: unstable_Profiling
+  });
+
+  var DEFAULT_THREAD_ID = 0; // Counters used to generate unique IDs.
+
+  var interactionIDCounter = 0;
+  var threadIDCounter = 0; // Set of currently traced interactions.
+  // Interactions "stack"–
+  // Meaning that newly traced interactions are appended to the previously active set.
+  // When an interaction goes out of scope, the previous set (if any) is restored.
+
+  var interactionsRef = null; // Listener(s) to notify when interactions begin and end.
+
+  var subscriberRef = null;
+
+  {
+    interactionsRef = {
+      current: new Set()
+    };
+    subscriberRef = {
+      current: null
+    };
+  }
+  function unstable_clear(callback) {
+
+    var prevInteractions = interactionsRef.current;
+    interactionsRef.current = new Set();
+
+    try {
+      return callback();
+    } finally {
+      interactionsRef.current = prevInteractions;
+    }
+  }
+  function unstable_getCurrent() {
+    {
+      return interactionsRef.current;
+    }
+  }
+  function unstable_getThreadID() {
+    return ++threadIDCounter;
+  }
+  function unstable_trace(name, timestamp, callback) {
+    var threadID = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : DEFAULT_THREAD_ID;
+
+    var interaction = {
+      __count: 1,
+      id: interactionIDCounter++,
+      name: name,
+      timestamp: timestamp
+    };
+    var prevInteractions = interactionsRef.current; // Traced interactions should stack/accumulate.
+    // To do that, clone the current interactions.
+    // The previous set will be restored upon completion.
+
+    var interactions = new Set(prevInteractions);
+    interactions.add(interaction);
+    interactionsRef.current = interactions;
+    var subscriber = subscriberRef.current;
+    var returnValue;
+
+    try {
+      if (subscriber !== null) {
+        subscriber.onInteractionTraced(interaction);
+      }
+    } finally {
+      try {
+        if (subscriber !== null) {
+          subscriber.onWorkStarted(interactions, threadID);
+        }
+      } finally {
+        try {
+          returnValue = callback();
+        } finally {
+          interactionsRef.current = prevInteractions;
+
+          try {
+            if (subscriber !== null) {
+              subscriber.onWorkStopped(interactions, threadID);
+            }
+          } finally {
+            interaction.__count--; // If no async work was scheduled for this interaction,
+            // Notify subscribers that it's completed.
+
+            if (subscriber !== null && interaction.__count === 0) {
+              subscriber.onInteractionScheduledWorkCompleted(interaction);
+            }
+          }
+        }
+      }
+    }
+
+    return returnValue;
+  }
+  function unstable_wrap(callback) {
+    var threadID = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : DEFAULT_THREAD_ID;
+
+    var wrappedInteractions = interactionsRef.current;
+    var subscriber = subscriberRef.current;
+
+    if (subscriber !== null) {
+      subscriber.onWorkScheduled(wrappedInteractions, threadID);
+    } // Update the pending async work count for the current interactions.
+    // Update after calling subscribers in case of error.
+
+
+    wrappedInteractions.forEach(function (interaction) {
+      interaction.__count++;
+    });
+    var hasRun = false;
+
+    function wrapped() {
+      var prevInteractions = interactionsRef.current;
+      interactionsRef.current = wrappedInteractions;
+      subscriber = subscriberRef.current;
+
+      try {
+        var returnValue;
+
+        try {
+          if (subscriber !== null) {
+            subscriber.onWorkStarted(wrappedInteractions, threadID);
+          }
+        } finally {
+          try {
+            returnValue = callback.apply(undefined, arguments);
+          } finally {
+            interactionsRef.current = prevInteractions;
+
+            if (subscriber !== null) {
+              subscriber.onWorkStopped(wrappedInteractions, threadID);
+            }
+          }
+        }
+
+        return returnValue;
+      } finally {
+        if (!hasRun) {
+          // We only expect a wrapped function to be executed once,
+          // But in the event that it's executed more than once–
+          // Only decrement the outstanding interaction counts once.
+          hasRun = true; // Update pending async counts for all wrapped interactions.
+          // If this was the last scheduled async work for any of them,
+          // Mark them as completed.
+
+          wrappedInteractions.forEach(function (interaction) {
+            interaction.__count--;
+
+            if (subscriber !== null && interaction.__count === 0) {
+              subscriber.onInteractionScheduledWorkCompleted(interaction);
+            }
+          });
+        }
+      }
+    }
+
+    wrapped.cancel = function cancel() {
+      subscriber = subscriberRef.current;
+
+      try {
+        if (subscriber !== null) {
+          subscriber.onWorkCanceled(wrappedInteractions, threadID);
+        }
+      } finally {
+        // Update pending async counts for all wrapped interactions.
+        // If this was the last scheduled async work for any of them,
+        // Mark them as completed.
+        wrappedInteractions.forEach(function (interaction) {
+          interaction.__count--;
+
+          if (subscriber && interaction.__count === 0) {
+            subscriber.onInteractionScheduledWorkCompleted(interaction);
+          }
+        });
+      }
+    };
+
+    return wrapped;
+  }
+
+  var subscribers = null;
+
+  {
+    subscribers = new Set();
+  }
+
+  function unstable_subscribe(subscriber) {
+    {
+      subscribers.add(subscriber);
+
+      if (subscribers.size === 1) {
+        subscriberRef.current = {
+          onInteractionScheduledWorkCompleted: onInteractionScheduledWorkCompleted,
+          onInteractionTraced: onInteractionTraced,
+          onWorkCanceled: onWorkCanceled,
+          onWorkScheduled: onWorkScheduled,
+          onWorkStarted: onWorkStarted,
+          onWorkStopped: onWorkStopped
+        };
+      }
+    }
+  }
+  function unstable_unsubscribe(subscriber) {
+    {
+      subscribers.delete(subscriber);
+
+      if (subscribers.size === 0) {
+        subscriberRef.current = null;
+      }
+    }
+  }
+
+  function onInteractionTraced(interaction) {
+    var didCatchError = false;
+    var caughtError = null;
+    subscribers.forEach(function (subscriber) {
+      try {
+        subscriber.onInteractionTraced(interaction);
+      } catch (error) {
+        if (!didCatchError) {
+          didCatchError = true;
+          caughtError = error;
+        }
+      }
+    });
+
+    if (didCatchError) {
+      throw caughtError;
+    }
+  }
+
+  function onInteractionScheduledWorkCompleted(interaction) {
+    var didCatchError = false;
+    var caughtError = null;
+    subscribers.forEach(function (subscriber) {
+      try {
+        subscriber.onInteractionScheduledWorkCompleted(interaction);
+      } catch (error) {
+        if (!didCatchError) {
+          didCatchError = true;
+          caughtError = error;
+        }
+      }
+    });
+
+    if (didCatchError) {
+      throw caughtError;
+    }
+  }
+
+  function onWorkScheduled(interactions, threadID) {
+    var didCatchError = false;
+    var caughtError = null;
+    subscribers.forEach(function (subscriber) {
+      try {
+        subscriber.onWorkScheduled(interactions, threadID);
+      } catch (error) {
+        if (!didCatchError) {
+          didCatchError = true;
+          caughtError = error;
+        }
+      }
+    });
+
+    if (didCatchError) {
+      throw caughtError;
+    }
+  }
+
+  function onWorkStarted(interactions, threadID) {
+    var didCatchError = false;
+    var caughtError = null;
+    subscribers.forEach(function (subscriber) {
+      try {
+        subscriber.onWorkStarted(interactions, threadID);
+      } catch (error) {
+        if (!didCatchError) {
+          didCatchError = true;
+          caughtError = error;
+        }
+      }
+    });
+
+    if (didCatchError) {
+      throw caughtError;
+    }
+  }
+
+  function onWorkStopped(interactions, threadID) {
+    var didCatchError = false;
+    var caughtError = null;
+    subscribers.forEach(function (subscriber) {
+      try {
+        subscriber.onWorkStopped(interactions, threadID);
+      } catch (error) {
+        if (!didCatchError) {
+          didCatchError = true;
+          caughtError = error;
+        }
+      }
+    });
+
+    if (didCatchError) {
+      throw caughtError;
+    }
+  }
+
+  function onWorkCanceled(interactions, threadID) {
+    var didCatchError = false;
+    var caughtError = null;
+    subscribers.forEach(function (subscriber) {
+      try {
+        subscriber.onWorkCanceled(interactions, threadID);
+      } catch (error) {
+        if (!didCatchError) {
+          didCatchError = true;
+          caughtError = error;
+        }
+      }
+    });
+
+    if (didCatchError) {
+      throw caughtError;
+    }
+  }
+
+
+
+  var SchedulerTracing = /*#__PURE__*/Object.freeze({
+    __proto__: null,
+    get __interactionsRef () { return interactionsRef; },
+    get __subscriberRef () { return subscriberRef; },
+    unstable_clear: unstable_clear,
+    unstable_getCurrent: unstable_getCurrent,
+    unstable_getThreadID: unstable_getThreadID,
+    unstable_trace: unstable_trace,
+    unstable_wrap: unstable_wrap,
+    unstable_subscribe: unstable_subscribe,
+    unstable_unsubscribe: unstable_unsubscribe
+  });
+
+  var ReactSharedInternals$1 = {
+    ReactCurrentDispatcher: ReactCurrentDispatcher,
+    ReactCurrentOwner: ReactCurrentOwner,
+    IsSomeRendererActing: IsSomeRendererActing,
+    // Used by renderers to avoid bundling object-assign twice in UMD bundles:
+    assign: objectAssign
+  };
+
+  {
+    objectAssign(ReactSharedInternals$1, {
+      // These should not be included in production.
+      ReactDebugCurrentFrame: ReactDebugCurrentFrame,
+      // Shim for React DOM 16.0.0 which still destructured (but not used) this.
+      // TODO: remove in React 17.0.
+      ReactComponentTreeHook: {}
+    });
+  } // Re-export the schedule API(s) for UMD bundles.
+  // This avoids introducing a dependency on a new UMD global in a minor update,
+  // Since that would be a breaking change (e.g. for all existing CodeSandboxes).
+  // This re-export is only required for UMD bundles;
+  // CJS bundles use the shared NPM package.
+
+
+  objectAssign(ReactSharedInternals$1, {
+    Scheduler: Scheduler,
+    SchedulerTracing: SchedulerTracing
+  });
+
+  {
+
+    try {
+      var frozenObject = Object.freeze({});
+      var testMap = new Map([[frozenObject, null]]);
+      var testSet = new Set([frozenObject]); // This is necessary for Rollup to not consider these unused.
+      // https://github.com/rollup/rollup/issues/1771
+      // TODO: we can remove these if Rollup fixes the bug.
+
+      testMap.set(0, 0);
+      testSet.add(0);
+    } catch (e) {
+    }
+  }
+
+  var createElement$1 =  createElementWithValidation ;
+  var cloneElement$1 =  cloneElementWithValidation ;
+  var createFactory =  createFactoryWithValidation ;
+  var Children = {
+    map: mapChildren,
+    forEach: forEachChildren,
+    count: countChildren,
+    toArray: toArray,
+    only: onlyChild
+  };
+
+  exports.Children = Children;
+  exports.Component = Component;
+  exports.Fragment = REACT_FRAGMENT_TYPE;
+  exports.Profiler = REACT_PROFILER_TYPE;
+  exports.PureComponent = PureComponent;
+  exports.StrictMode = REACT_STRICT_MODE_TYPE;
+  exports.Suspense = REACT_SUSPENSE_TYPE;
+  exports.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED = ReactSharedInternals$1;
+  exports.cloneElement = cloneElement$1;
+  exports.createContext = createContext;
+  exports.createElement = createElement$1;
+  exports.createFactory = createFactory;
+  exports.createRef = createRef;
+  exports.forwardRef = forwardRef;
+  exports.isValidElement = isValidElement;
+  exports.lazy = lazy;
+  exports.memo = memo;
+  exports.useCallback = useCallback;
+  exports.useContext = useContext;
+  exports.useDebugValue = useDebugValue;
+  exports.useEffect = useEffect;
+  exports.useImperativeHandle = useImperativeHandle;
+  exports.useLayoutEffect = useLayoutEffect;
+  exports.useMemo = useMemo;
+  exports.useReducer = useReducer;
+  exports.useRef = useRef;
+  exports.useState = useState;
+  exports.version = ReactVersion;
+
+})));
diff --git a/igv_component/node_modules/react/umd/react.production.min.js b/igv_component/node_modules/react/umd/react.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..39ae78de382c45a8ebdb4b63be8a4e88979ab63a
--- /dev/null
+++ b/igv_component/node_modules/react/umd/react.production.min.js
@@ -0,0 +1,32 @@
+/** @license React v16.14.0
+ * react.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';(function(d,r){"object"===typeof exports&&"undefined"!==typeof module?r(exports):"function"===typeof define&&define.amd?define(["exports"],r):(d=d||self,r(d.React={}))})(this,function(d){function r(a){for(var b="https://reactjs.org/docs/error-decoder.html?invariant="+a,c=1;c<arguments.length;c++)b+="&args[]="+encodeURIComponent(arguments[c]);return"Minified React error #"+a+"; visit "+b+" for the full message or use the non-minified dev environment for full errors and additional helpful warnings."}
+function w(a,b,c){this.props=a;this.context=b;this.refs=ba;this.updater=c||ca}function da(){}function L(a,b,c){this.props=a;this.context=b;this.refs=ba;this.updater=c||ca}function ea(a,b,c){var g,e={},fa=null,d=null;if(null!=b)for(g in void 0!==b.ref&&(d=b.ref),void 0!==b.key&&(fa=""+b.key),b)ha.call(b,g)&&!ia.hasOwnProperty(g)&&(e[g]=b[g]);var h=arguments.length-2;if(1===h)e.children=c;else if(1<h){for(var k=Array(h),f=0;f<h;f++)k[f]=arguments[f+2];e.children=k}if(a&&a.defaultProps)for(g in h=a.defaultProps,
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+context:g,count:0}}function ka(a){a.result=null;a.keyPrefix=null;a.func=null;a.context=null;a.count=0;10>C.length&&C.push(a)}function O(a,b,c,g){var e=typeof a;if("undefined"===e||"boolean"===e)a=null;var d=!1;if(null===a)d=!0;else switch(e){case "string":case "number":d=!0;break;case "object":switch(a.$$typeof){case x:case xa:d=!0}}if(d)return c(g,a,""===b?"."+P(a,0):b),1;d=0;b=""===b?".":b+":";if(Array.isArray(a))for(var f=0;f<a.length;f++){e=a[f];var h=b+P(e,f);d+=O(e,h,c,g)}else if(null===a||
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+a.count++)}function za(a,b,c){var g=a.result,e=a.keyPrefix;a=a.func.call(a.context,b,a.count++);Array.isArray(a)?R(a,g,c,function(a){return a}):null!=a&&(N(a)&&(a=va(a,e+(!a.key||b&&b.key===a.key?"":(""+a.key).replace(ma,"$&/")+"/")+c)),g.push(a))}function R(a,b,c,g,e){var d="";null!=c&&(d=(""+c).replace(ma,"$&/")+"/");b=ja(b,d,g,e);Q(a,za,b);ka(b)}function t(){var a=na.current;if(null===a)throw Error(r(321));return a}function S(a,b){var c=a.length;a.push(b);a:for(;;){var g=c-1>>>1,e=a[g];if(void 0!==
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+Ea=f?Symbol.for("react.context"):60110,Fa=f?Symbol.for("react.forward_ref"):60112,Ga=f?Symbol.for("react.suspense"):60113,Ha=f?Symbol.for("react.memo"):60115,Ia=f?Symbol.for("react.lazy"):60116,la="function"===typeof Symbol&&Symbol.iterator,pa=Object.getOwnPropertySymbols,Ja=Object.prototype.hasOwnProperty,Ka=Object.prototype.propertyIsEnumerable,I=function(){try{if(!Object.assign)return!1;var a=new String("abc");a[5]="de";if("5"===Object.getOwnPropertyNames(a)[0])return!1;var b={};for(a=0;10>a;a++)b["_"+
+String.fromCharCode(a)]=a;if("0123456789"!==Object.getOwnPropertyNames(b).map(function(a){return b[a]}).join(""))return!1;var c={};"abcdefghijklmnopqrst".split("").forEach(function(a){c[a]=a});return"abcdefghijklmnopqrst"!==Object.keys(Object.assign({},c)).join("")?!1:!0}catch(g){return!1}}()?Object.assign:function(a,b){if(null===a||void 0===a)throw new TypeError("Object.assign cannot be called with null or undefined");var c=Object(a);for(var g,e=1;e<arguments.length;e++){var d=Object(arguments[e]);
+for(var f in d)Ja.call(d,f)&&(c[f]=d[f]);if(pa){g=pa(d);for(var h=0;h<g.length;h++)Ka.call(d,g[h])&&(c[g[h]]=d[g[h]])}}return c},ca={isMounted:function(a){return!1},enqueueForceUpdate:function(a,b,c){},enqueueReplaceState:function(a,b,c,d){},enqueueSetState:function(a,b,c,d){}},ba={};w.prototype.isReactComponent={};w.prototype.setState=function(a,b){if("object"!==typeof a&&"function"!==typeof a&&null!=a)throw Error(r(85));this.updater.enqueueSetState(this,a,b,"setState")};w.prototype.forceUpdate=
+function(a){this.updater.enqueueForceUpdate(this,a,"forceUpdate")};da.prototype=w.prototype;f=L.prototype=new da;f.constructor=L;I(f,w.prototype);f.isPureReactComponent=!0;var M={current:null},ha=Object.prototype.hasOwnProperty,ia={key:!0,ref:!0,__self:!0,__source:!0},ma=/\/+/g,C=[],na={current:null},X;if("undefined"===typeof window||"function"!==typeof MessageChannel){var A=null,qa=null,ra=function(){if(null!==A)try{var a=q();A(!0,a);A=null}catch(b){throw setTimeout(ra,0),b;}},La=Date.now();var q=
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+unstable_shouldYield:function(){var a=q();F(a);var b=n(p);return b!==l&&null!==l&&null!==b&&null!==b.callback&&b.startTime<=a&&b.expirationTime<l.expirationTime||W()},unstable_requestPaint:f,unstable_continueExecution:function(){v||H||(v=!0,z(U))},unstable_pauseExecution:function(){},unstable_getFirstCallbackNode:function(){return n(p)},get unstable_now(){return q},get unstable_forceFrameRate(){return X},unstable_Profiling:null},SchedulerTracing:{__proto__:null,__interactionsRef:null,__subscriberRef:null,
+unstable_clear:function(a){return a()},unstable_getCurrent:function(){return null},unstable_getThreadID:function(){return++Qa},unstable_trace:function(a,b,c){return c()},unstable_wrap:function(a){return a},unstable_subscribe:function(a){},unstable_unsubscribe:function(a){}}});d.Children={map:function(a,b,c){if(null==a)return a;var d=[];R(a,d,null,b,c);return d},forEach:function(a,b,c){if(null==a)return a;b=ja(null,null,b,c);Q(a,ya,b);ka(b)},count:function(a){return Q(a,function(){return null},null)},
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+d.useEffect=function(a,b){return t().useEffect(a,b)};d.useImperativeHandle=function(a,b,c){return t().useImperativeHandle(a,b,c)};d.useLayoutEffect=function(a,b){return t().useLayoutEffect(a,b)};d.useMemo=function(a,b){return t().useMemo(a,b)};d.useReducer=function(a,b,c){return t().useReducer(a,b,c)};d.useRef=function(a){return t().useRef(a)};d.useState=function(a){return t().useState(a)};d.version="16.14.0"});
diff --git a/igv_component/node_modules/react/umd/react.profiling.min.js b/igv_component/node_modules/react/umd/react.profiling.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..eb2d9cf65e46e60a87c7eca39e93f60d9ef4ef2d
--- /dev/null
+++ b/igv_component/node_modules/react/umd/react.profiling.min.js
@@ -0,0 +1,39 @@
+/** @license React v16.14.0
+ * react.profiling.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';(function(f,x){"object"===typeof exports&&"undefined"!==typeof module?x(exports):"function"===typeof define&&define.amd?define(["exports"],x):(f=f||self,x(f.React={}))})(this,function(f){function x(a){for(var b="https://reactjs.org/docs/error-decoder.html?invariant="+a,c=1;c<arguments.length;c++)b+="&args[]="+encodeURIComponent(arguments[c]);return"Minified React error #"+a+"; visit "+b+" for the full message or use the non-minified dev environment for full errors and additional helpful warnings."}
+function E(a,b,c){this.props=a;this.context=b;this.refs=pa;this.updater=c||qa}function ra(){}function V(a,b,c){this.props=a;this.context=b;this.refs=pa;this.updater=c||qa}function sa(a,b,c){var d,e={},h=null,n=null;if(null!=b)for(d in void 0!==b.ref&&(n=b.ref),void 0!==b.key&&(h=""+b.key),b)ta.call(b,d)&&!ua.hasOwnProperty(d)&&(e[d]=b[d]);var g=arguments.length-2;if(1===g)e.children=c;else if(1<g){for(var f=Array(g),k=0;k<g;k++)f[k]=arguments[k+2];e.children=f}if(a&&a.defaultProps)for(d in g=a.defaultProps,
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diff --git a/igv_component/node_modules/reduce-flatten/.travis.yml b/igv_component/node_modules/reduce-flatten/.travis.yml
new file mode 100644
index 0000000000000000000000000000000000000000..0517f822b562076e3ac965dcc9359a902e20c7c4
--- /dev/null
+++ b/igv_component/node_modules/reduce-flatten/.travis.yml
@@ -0,0 +1,7 @@
+language: node_js
+node_js:
+  - 6
+  - 7
+  - 8
+  - 9
+  - 10
diff --git a/igv_component/node_modules/reduce-flatten/LICENSE b/igv_component/node_modules/reduce-flatten/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..fb6a17a6c654e4b68b68d1e65893b9e852e0baee
--- /dev/null
+++ b/igv_component/node_modules/reduce-flatten/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2016-18 Lloyd Brookes <75pound@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/igv_component/node_modules/reduce-flatten/README.hbs b/igv_component/node_modules/reduce-flatten/README.hbs
new file mode 100644
index 0000000000000000000000000000000000000000..aecf981c77783d04f7668047b4acf58527ab5671
--- /dev/null
+++ b/igv_component/node_modules/reduce-flatten/README.hbs
@@ -0,0 +1,11 @@
+[![view on npm](http://img.shields.io/npm/v/reduce-flatten.svg)](https://www.npmjs.org/package/reduce-flatten)
+[![npm module downloads](http://img.shields.io/npm/dt/reduce-flatten.svg)](https://www.npmjs.org/package/reduce-flatten)
+[![Build Status](https://travis-ci.org/75lb/reduce-flatten.svg?branch=master)](https://travis-ci.org/75lb/reduce-flatten)
+[![Dependency Status](https://david-dm.org/75lb/reduce-flatten.svg)](https://david-dm.org/75lb/reduce-flatten)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+{{>main}}
+
+* * *
+
+&copy; 2016-18 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/reduce-flatten/README.md b/igv_component/node_modules/reduce-flatten/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..a3200061f9981c52ad9159666cb404ff5e4a4bf4
--- /dev/null
+++ b/igv_component/node_modules/reduce-flatten/README.md
@@ -0,0 +1,29 @@
+[![view on npm](http://img.shields.io/npm/v/reduce-flatten.svg)](https://www.npmjs.org/package/reduce-flatten)
+[![npm module downloads](http://img.shields.io/npm/dt/reduce-flatten.svg)](https://www.npmjs.org/package/reduce-flatten)
+[![Build Status](https://travis-ci.org/75lb/reduce-flatten.svg?branch=master)](https://travis-ci.org/75lb/reduce-flatten)
+[![Dependency Status](https://david-dm.org/75lb/reduce-flatten.svg)](https://david-dm.org/75lb/reduce-flatten)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+<a name="module_reduce-flatten"></a>
+
+## reduce-flatten
+Flatten an array into the supplied array.
+
+**Example**  
+```js
+const flatten = require('reduce-flatten')
+```
+<a name="exp_module_reduce-flatten--flatten"></a>
+
+### flatten() ⏏
+**Kind**: Exported function  
+**Example**  
+```js
+> numbers = [ 1, 2, [ 3, 4 ], 5 ]
+> numbers.reduce(flatten, [])
+[ 1, 2, 3, 4, 5 ]
+```
+
+* * *
+
+&copy; 2016-18 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/reduce-flatten/index.js b/igv_component/node_modules/reduce-flatten/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..f2ee9ed5f17072edb1cefcc921df6e1648cffa50
--- /dev/null
+++ b/igv_component/node_modules/reduce-flatten/index.js
@@ -0,0 +1,19 @@
+/**
+ * Flatten an array into the supplied array.
+ *
+ * @module reduce-flatten
+ * @example
+ * const flatten = require('reduce-flatten')
+ */
+module.exports = flatten
+
+/**
+ * @alias module:reduce-flatten
+ * @example
+ * > numbers = [ 1, 2, [ 3, 4 ], 5 ]
+ * > numbers.reduce(flatten, [])
+ * [ 1, 2, 3, 4, 5 ]
+ */
+function flatten (prev, curr) {
+  return prev.concat(curr)
+}
diff --git a/igv_component/node_modules/reduce-flatten/package.json b/igv_component/node_modules/reduce-flatten/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..fcb9e5020be877c569bbc8efd94e7d7684570887
--- /dev/null
+++ b/igv_component/node_modules/reduce-flatten/package.json
@@ -0,0 +1,24 @@
+{
+  "name": "reduce-flatten",
+  "author": "Lloyd Brookes <75pound@gmail.com>",
+  "version": "2.0.0",
+  "description": "Flatten an array into the supplied array.",
+  "repository": "https://github.com/75lb/reduce-flatten.git",
+  "license": "MIT",
+  "keywords": [
+    "array",
+    "reduce",
+    "flatten"
+  ],
+  "engines": {
+    "node": ">=6"
+  },
+  "scripts": {
+    "test": "test-runner test.js",
+    "docs": "jsdoc2md -t README.hbs index.js > README.md; echo"
+  },
+  "devDependencies": {
+    "jsdoc-to-markdown": "^4.0.1",
+    "test-runner": "^0.5.0"
+  }
+}
diff --git a/igv_component/node_modules/reduce-flatten/test.js b/igv_component/node_modules/reduce-flatten/test.js
new file mode 100644
index 0000000000000000000000000000000000000000..db2fe68ed7da9f575d8a97f5b7f400c5ec8df936
--- /dev/null
+++ b/igv_component/node_modules/reduce-flatten/test.js
@@ -0,0 +1,11 @@
+const flatten = require('./')
+const TestRunner = require('test-runner')
+const a = require('assert')
+
+const runner = new TestRunner()
+
+runner.test('flatten', function () {
+  const numbers = [ 1, 2, [ 3, 4 ], 5 ]
+  const result = numbers.reduce(flatten, [])
+  a.deepStrictEqual(result, [ 1, 2, 3, 4, 5 ])
+})
diff --git a/igv_component/node_modules/repeat-string/LICENSE b/igv_component/node_modules/repeat-string/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..39245ac1c6061324d8a844c8bddb426208d06d9f
--- /dev/null
+++ b/igv_component/node_modules/repeat-string/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2014-2016, Jon Schlinkert.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
diff --git a/igv_component/node_modules/repeat-string/README.md b/igv_component/node_modules/repeat-string/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..aaa5e91c7a7f91ea47622761d634b591959eb3be
--- /dev/null
+++ b/igv_component/node_modules/repeat-string/README.md
@@ -0,0 +1,136 @@
+# repeat-string [![NPM version](https://img.shields.io/npm/v/repeat-string.svg?style=flat)](https://www.npmjs.com/package/repeat-string) [![NPM monthly downloads](https://img.shields.io/npm/dm/repeat-string.svg?style=flat)](https://npmjs.org/package/repeat-string)  [![NPM total downloads](https://img.shields.io/npm/dt/repeat-string.svg?style=flat)](https://npmjs.org/package/repeat-string) [![Linux Build Status](https://img.shields.io/travis/jonschlinkert/repeat-string.svg?style=flat&label=Travis)](https://travis-ci.org/jonschlinkert/repeat-string)
+
+> Repeat the given string n times. Fastest implementation for repeating a string.
+
+## Install
+
+Install with [npm](https://www.npmjs.com/):
+
+```sh
+$ npm install --save repeat-string
+```
+
+## Usage
+
+### [repeat](index.js#L41)
+
+Repeat the given `string` the specified `number` of times.
+
+**Example:**
+
+**Example**
+
+```js
+var repeat = require('repeat-string');
+repeat('A', 5);
+//=> AAAAA
+```
+
+**Params**
+
+* `string` **{String}**: The string to repeat
+* `number` **{Number}**: The number of times to repeat the string
+* `returns` **{String}**: Repeated string
+
+## Benchmarks
+
+Repeat string is significantly faster than the native method (which is itself faster than [repeating](https://github.com/sindresorhus/repeating)):
+
+```sh
+# 2x
+repeat-string  █████████████████████████  (26,953,977 ops/sec)
+repeating      █████████                  (9,855,695 ops/sec)
+native         ██████████████████         (19,453,895 ops/sec)
+
+# 3x
+repeat-string  █████████████████████████  (19,445,252 ops/sec)
+repeating      ███████████                (8,661,565 ops/sec)
+native         ████████████████████       (16,020,598 ops/sec)
+
+# 10x
+repeat-string  █████████████████████████  (23,792,521 ops/sec)
+repeating      █████████                  (8,571,332 ops/sec)
+native         ███████████████            (14,582,955 ops/sec)
+
+# 50x
+repeat-string  █████████████████████████  (23,640,179 ops/sec)
+repeating      █████                      (5,505,509 ops/sec)
+native         ██████████                 (10,085,557 ops/sec)
+
+# 250x
+repeat-string  █████████████████████████  (23,489,618 ops/sec)
+repeating      ████                       (3,962,937 ops/sec)
+native         ████████                   (7,724,892 ops/sec)
+
+# 2000x
+repeat-string  █████████████████████████  (20,315,172 ops/sec)
+repeating      ████                       (3,297,079 ops/sec)
+native         ███████                    (6,203,331 ops/sec)
+
+# 20000x
+repeat-string  █████████████████████████  (23,382,915 ops/sec)
+repeating      ███                        (2,980,058 ops/sec)
+native         █████                      (5,578,808 ops/sec)
+```
+
+**Run the benchmarks**
+
+Install dev dependencies:
+
+```sh
+npm i -d && node benchmark
+```
+
+## About
+
+### Related projects
+
+[repeat-element](https://www.npmjs.com/package/repeat-element): Create an array by repeating the given value n times. | [homepage](https://github.com/jonschlinkert/repeat-element "Create an array by repeating the given value n times.")
+
+### Contributing
+
+Pull requests and stars are always welcome. For bugs and feature requests, [please create an issue](../../issues/new).
+
+### Contributors
+
+| **Commits** | **Contributor**<br/> | 
+| --- | --- |
+| 51 | [jonschlinkert](https://github.com/jonschlinkert) |
+| 2 | [LinusU](https://github.com/LinusU) |
+| 2 | [tbusser](https://github.com/tbusser) |
+| 1 | [doowb](https://github.com/doowb) |
+| 1 | [wooorm](https://github.com/wooorm) |
+
+### Building docs
+
+_(This document was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme) (a [verb](https://github.com/verbose/verb) generator), please don't edit the readme directly. Any changes to the readme must be made in [.verb.md](.verb.md).)_
+
+To generate the readme and API documentation with [verb](https://github.com/verbose/verb):
+
+```sh
+$ npm install -g verb verb-generate-readme && verb
+```
+
+### Running tests
+
+Install dev dependencies:
+
+```sh
+$ npm install -d && npm test
+```
+
+### Author
+
+**Jon Schlinkert**
+
+* [github/jonschlinkert](https://github.com/jonschlinkert)
+* [twitter/jonschlinkert](http://twitter.com/jonschlinkert)
+
+### License
+
+Copyright © 2016, [Jon Schlinkert](http://github.com/jonschlinkert).
+Released under the [MIT license](https://github.com/jonschlinkert/repeat-string/blob/master/LICENSE).
+
+***
+
+_This file was generated by [verb-generate-readme](https://github.com/verbose/verb-generate-readme), v0.2.0, on October 23, 2016._
\ No newline at end of file
diff --git a/igv_component/node_modules/repeat-string/index.js b/igv_component/node_modules/repeat-string/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..4459afd8016e3188ea86f813367fab2acafbeb4d
--- /dev/null
+++ b/igv_component/node_modules/repeat-string/index.js
@@ -0,0 +1,70 @@
+/*!
+ * repeat-string <https://github.com/jonschlinkert/repeat-string>
+ *
+ * Copyright (c) 2014-2015, Jon Schlinkert.
+ * Licensed under the MIT License.
+ */
+
+'use strict';
+
+/**
+ * Results cache
+ */
+
+var res = '';
+var cache;
+
+/**
+ * Expose `repeat`
+ */
+
+module.exports = repeat;
+
+/**
+ * Repeat the given `string` the specified `number`
+ * of times.
+ *
+ * **Example:**
+ *
+ * ```js
+ * var repeat = require('repeat-string');
+ * repeat('A', 5);
+ * //=> AAAAA
+ * ```
+ *
+ * @param {String} `string` The string to repeat
+ * @param {Number} `number` The number of times to repeat the string
+ * @return {String} Repeated string
+ * @api public
+ */
+
+function repeat(str, num) {
+  if (typeof str !== 'string') {
+    throw new TypeError('expected a string');
+  }
+
+  // cover common, quick use cases
+  if (num === 1) return str;
+  if (num === 2) return str + str;
+
+  var max = str.length * num;
+  if (cache !== str || typeof cache === 'undefined') {
+    cache = str;
+    res = '';
+  } else if (res.length >= max) {
+    return res.substr(0, max);
+  }
+
+  while (max > res.length && num > 1) {
+    if (num & 1) {
+      res += str;
+    }
+
+    num >>= 1;
+    str += str;
+  }
+
+  res += str;
+  res = res.substr(0, max);
+  return res;
+}
diff --git a/igv_component/node_modules/repeat-string/package.json b/igv_component/node_modules/repeat-string/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..09f889299b6683e26294f6a48a49d283046e927e
--- /dev/null
+++ b/igv_component/node_modules/repeat-string/package.json
@@ -0,0 +1,77 @@
+{
+  "name": "repeat-string",
+  "description": "Repeat the given string n times. Fastest implementation for repeating a string.",
+  "version": "1.6.1",
+  "homepage": "https://github.com/jonschlinkert/repeat-string",
+  "author": "Jon Schlinkert (http://github.com/jonschlinkert)",
+  "contributors": [
+    "Brian Woodward <brian.woodward@gmail.com> (https://github.com/doowb)",
+    "Jon Schlinkert <jon.schlinkert@sellside.com> (http://twitter.com/jonschlinkert)",
+    "Linus Unnebäck <linus@folkdatorn.se> (http://linus.unnebäck.se)",
+    "Thijs Busser <tbusser@gmail.com> (http://tbusser.net)",
+    "Titus <tituswormer@gmail.com> (wooorm.com)"
+  ],
+  "repository": "jonschlinkert/repeat-string",
+  "bugs": {
+    "url": "https://github.com/jonschlinkert/repeat-string/issues"
+  },
+  "license": "MIT",
+  "files": [
+    "index.js"
+  ],
+  "main": "index.js",
+  "engines": {
+    "node": ">=0.10"
+  },
+  "scripts": {
+    "test": "mocha"
+  },
+  "devDependencies": {
+    "ansi-cyan": "^0.1.1",
+    "benchmarked": "^0.2.5",
+    "gulp-format-md": "^0.1.11",
+    "isobject": "^2.1.0",
+    "mocha": "^3.1.2",
+    "repeating": "^3.0.0",
+    "text-table": "^0.2.0",
+    "yargs-parser": "^4.0.2"
+  },
+  "keywords": [
+    "fast",
+    "fastest",
+    "fill",
+    "left",
+    "left-pad",
+    "multiple",
+    "pad",
+    "padding",
+    "repeat",
+    "repeating",
+    "repetition",
+    "right",
+    "right-pad",
+    "string",
+    "times"
+  ],
+  "verb": {
+    "toc": false,
+    "layout": "default",
+    "tasks": [
+      "readme"
+    ],
+    "plugins": [
+      "gulp-format-md"
+    ],
+    "related": {
+      "list": [
+        "repeat-element"
+      ]
+    },
+    "helpers": [
+      "./benchmark/helper.js"
+    ],
+    "reflinks": [
+      "verb"
+    ]
+  }
+}
diff --git a/igv_component/node_modules/scheduler/LICENSE b/igv_component/node_modules/scheduler/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..b96dcb0480a0b0be0727976e5202a1e7b23edc3f
--- /dev/null
+++ b/igv_component/node_modules/scheduler/LICENSE
@@ -0,0 +1,21 @@
+MIT License
+
+Copyright (c) Facebook, Inc. and its affiliates.
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/igv_component/node_modules/scheduler/README.md b/igv_component/node_modules/scheduler/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..10e4937a05b96f627c0ee16e9fa51e4fe9a815b3
--- /dev/null
+++ b/igv_component/node_modules/scheduler/README.md
@@ -0,0 +1,9 @@
+# `scheduler`
+
+This is a package for cooperative scheduling in a browser environment. It is currently used internally by React, but we plan to make it more generic.
+
+The public API for this package is not yet finalized.
+
+### Thanks
+
+The React team thanks [Anton Podviaznikov](https://podviaznikov.com/) for donating the `scheduler` package name.
diff --git a/igv_component/node_modules/scheduler/build-info.json b/igv_component/node_modules/scheduler/build-info.json
new file mode 100644
index 0000000000000000000000000000000000000000..4094da67d566d1c3d90b17a78d5ec8fc7dff8efe
--- /dev/null
+++ b/igv_component/node_modules/scheduler/build-info.json
@@ -0,0 +1,8 @@
+{
+  "branch": "pull/18344",
+  "buildNumber": "106499",
+  "checksum": "7fe5a2e",
+  "commit": "da834083c",
+  "environment": "ci",
+  "reactVersion": "16.12.0-da834083c"
+}
diff --git a/igv_component/node_modules/scheduler/cjs/scheduler-tracing.development.js b/igv_component/node_modules/scheduler/cjs/scheduler-tracing.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..2dc852c0322f1de2bdcf9281573d817e303501ba
--- /dev/null
+++ b/igv_component/node_modules/scheduler/cjs/scheduler-tracing.development.js
@@ -0,0 +1,349 @@
+/** @license React v0.19.1
+ * scheduler-tracing.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+var DEFAULT_THREAD_ID = 0; // Counters used to generate unique IDs.
+
+var interactionIDCounter = 0;
+var threadIDCounter = 0; // Set of currently traced interactions.
+// Interactions "stack"–
+// Meaning that newly traced interactions are appended to the previously active set.
+// When an interaction goes out of scope, the previous set (if any) is restored.
+
+exports.__interactionsRef = null; // Listener(s) to notify when interactions begin and end.
+
+exports.__subscriberRef = null;
+
+{
+  exports.__interactionsRef = {
+    current: new Set()
+  };
+  exports.__subscriberRef = {
+    current: null
+  };
+}
+function unstable_clear(callback) {
+
+  var prevInteractions = exports.__interactionsRef.current;
+  exports.__interactionsRef.current = new Set();
+
+  try {
+    return callback();
+  } finally {
+    exports.__interactionsRef.current = prevInteractions;
+  }
+}
+function unstable_getCurrent() {
+  {
+    return exports.__interactionsRef.current;
+  }
+}
+function unstable_getThreadID() {
+  return ++threadIDCounter;
+}
+function unstable_trace(name, timestamp, callback) {
+  var threadID = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : DEFAULT_THREAD_ID;
+
+  var interaction = {
+    __count: 1,
+    id: interactionIDCounter++,
+    name: name,
+    timestamp: timestamp
+  };
+  var prevInteractions = exports.__interactionsRef.current; // Traced interactions should stack/accumulate.
+  // To do that, clone the current interactions.
+  // The previous set will be restored upon completion.
+
+  var interactions = new Set(prevInteractions);
+  interactions.add(interaction);
+  exports.__interactionsRef.current = interactions;
+  var subscriber = exports.__subscriberRef.current;
+  var returnValue;
+
+  try {
+    if (subscriber !== null) {
+      subscriber.onInteractionTraced(interaction);
+    }
+  } finally {
+    try {
+      if (subscriber !== null) {
+        subscriber.onWorkStarted(interactions, threadID);
+      }
+    } finally {
+      try {
+        returnValue = callback();
+      } finally {
+        exports.__interactionsRef.current = prevInteractions;
+
+        try {
+          if (subscriber !== null) {
+            subscriber.onWorkStopped(interactions, threadID);
+          }
+        } finally {
+          interaction.__count--; // If no async work was scheduled for this interaction,
+          // Notify subscribers that it's completed.
+
+          if (subscriber !== null && interaction.__count === 0) {
+            subscriber.onInteractionScheduledWorkCompleted(interaction);
+          }
+        }
+      }
+    }
+  }
+
+  return returnValue;
+}
+function unstable_wrap(callback) {
+  var threadID = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : DEFAULT_THREAD_ID;
+
+  var wrappedInteractions = exports.__interactionsRef.current;
+  var subscriber = exports.__subscriberRef.current;
+
+  if (subscriber !== null) {
+    subscriber.onWorkScheduled(wrappedInteractions, threadID);
+  } // Update the pending async work count for the current interactions.
+  // Update after calling subscribers in case of error.
+
+
+  wrappedInteractions.forEach(function (interaction) {
+    interaction.__count++;
+  });
+  var hasRun = false;
+
+  function wrapped() {
+    var prevInteractions = exports.__interactionsRef.current;
+    exports.__interactionsRef.current = wrappedInteractions;
+    subscriber = exports.__subscriberRef.current;
+
+    try {
+      var returnValue;
+
+      try {
+        if (subscriber !== null) {
+          subscriber.onWorkStarted(wrappedInteractions, threadID);
+        }
+      } finally {
+        try {
+          returnValue = callback.apply(undefined, arguments);
+        } finally {
+          exports.__interactionsRef.current = prevInteractions;
+
+          if (subscriber !== null) {
+            subscriber.onWorkStopped(wrappedInteractions, threadID);
+          }
+        }
+      }
+
+      return returnValue;
+    } finally {
+      if (!hasRun) {
+        // We only expect a wrapped function to be executed once,
+        // But in the event that it's executed more than once–
+        // Only decrement the outstanding interaction counts once.
+        hasRun = true; // Update pending async counts for all wrapped interactions.
+        // If this was the last scheduled async work for any of them,
+        // Mark them as completed.
+
+        wrappedInteractions.forEach(function (interaction) {
+          interaction.__count--;
+
+          if (subscriber !== null && interaction.__count === 0) {
+            subscriber.onInteractionScheduledWorkCompleted(interaction);
+          }
+        });
+      }
+    }
+  }
+
+  wrapped.cancel = function cancel() {
+    subscriber = exports.__subscriberRef.current;
+
+    try {
+      if (subscriber !== null) {
+        subscriber.onWorkCanceled(wrappedInteractions, threadID);
+      }
+    } finally {
+      // Update pending async counts for all wrapped interactions.
+      // If this was the last scheduled async work for any of them,
+      // Mark them as completed.
+      wrappedInteractions.forEach(function (interaction) {
+        interaction.__count--;
+
+        if (subscriber && interaction.__count === 0) {
+          subscriber.onInteractionScheduledWorkCompleted(interaction);
+        }
+      });
+    }
+  };
+
+  return wrapped;
+}
+
+var subscribers = null;
+
+{
+  subscribers = new Set();
+}
+
+function unstable_subscribe(subscriber) {
+  {
+    subscribers.add(subscriber);
+
+    if (subscribers.size === 1) {
+      exports.__subscriberRef.current = {
+        onInteractionScheduledWorkCompleted: onInteractionScheduledWorkCompleted,
+        onInteractionTraced: onInteractionTraced,
+        onWorkCanceled: onWorkCanceled,
+        onWorkScheduled: onWorkScheduled,
+        onWorkStarted: onWorkStarted,
+        onWorkStopped: onWorkStopped
+      };
+    }
+  }
+}
+function unstable_unsubscribe(subscriber) {
+  {
+    subscribers.delete(subscriber);
+
+    if (subscribers.size === 0) {
+      exports.__subscriberRef.current = null;
+    }
+  }
+}
+
+function onInteractionTraced(interaction) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onInteractionTraced(interaction);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onInteractionScheduledWorkCompleted(interaction) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onInteractionScheduledWorkCompleted(interaction);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onWorkScheduled(interactions, threadID) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onWorkScheduled(interactions, threadID);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onWorkStarted(interactions, threadID) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onWorkStarted(interactions, threadID);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onWorkStopped(interactions, threadID) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onWorkStopped(interactions, threadID);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+function onWorkCanceled(interactions, threadID) {
+  var didCatchError = false;
+  var caughtError = null;
+  subscribers.forEach(function (subscriber) {
+    try {
+      subscriber.onWorkCanceled(interactions, threadID);
+    } catch (error) {
+      if (!didCatchError) {
+        didCatchError = true;
+        caughtError = error;
+      }
+    }
+  });
+
+  if (didCatchError) {
+    throw caughtError;
+  }
+}
+
+exports.unstable_clear = unstable_clear;
+exports.unstable_getCurrent = unstable_getCurrent;
+exports.unstable_getThreadID = unstable_getThreadID;
+exports.unstable_subscribe = unstable_subscribe;
+exports.unstable_trace = unstable_trace;
+exports.unstable_unsubscribe = unstable_unsubscribe;
+exports.unstable_wrap = unstable_wrap;
+  })();
+}
diff --git a/igv_component/node_modules/scheduler/cjs/scheduler-tracing.production.min.js b/igv_component/node_modules/scheduler/cjs/scheduler-tracing.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..71c5b0af0dd9e96b6d786ce693896244d6796625
--- /dev/null
+++ b/igv_component/node_modules/scheduler/cjs/scheduler-tracing.production.min.js
@@ -0,0 +1,10 @@
+/** @license React v0.19.1
+ * scheduler-tracing.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';var b=0;exports.__interactionsRef=null;exports.__subscriberRef=null;exports.unstable_clear=function(a){return a()};exports.unstable_getCurrent=function(){return null};exports.unstable_getThreadID=function(){return++b};exports.unstable_subscribe=function(){};exports.unstable_trace=function(a,d,c){return c()};exports.unstable_unsubscribe=function(){};exports.unstable_wrap=function(a){return a};
diff --git a/igv_component/node_modules/scheduler/cjs/scheduler-tracing.profiling.min.js b/igv_component/node_modules/scheduler/cjs/scheduler-tracing.profiling.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..0e228ac7513d30d6172ca15c7fa0fa9511be6a67
--- /dev/null
+++ b/igv_component/node_modules/scheduler/cjs/scheduler-tracing.profiling.min.js
@@ -0,0 +1,17 @@
+/** @license React v0.19.1
+ * scheduler-tracing.profiling.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';var g=0,l=0;exports.__interactionsRef=null;exports.__subscriberRef=null;exports.__interactionsRef={current:new Set};exports.__subscriberRef={current:null};var m=null;m=new Set;function n(e){var d=!1,a=null;m.forEach(function(c){try{c.onInteractionTraced(e)}catch(b){d||(d=!0,a=b)}});if(d)throw a;}function p(e){var d=!1,a=null;m.forEach(function(c){try{c.onInteractionScheduledWorkCompleted(e)}catch(b){d||(d=!0,a=b)}});if(d)throw a;}
+function q(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkScheduled(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}function r(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkStarted(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}function t(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkStopped(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}function u(e,d){var a=!1,c=null;m.forEach(function(b){try{b.onWorkCanceled(e,d)}catch(f){a||(a=!0,c=f)}});if(a)throw c;}
+exports.unstable_clear=function(e){var d=exports.__interactionsRef.current;exports.__interactionsRef.current=new Set;try{return e()}finally{exports.__interactionsRef.current=d}};exports.unstable_getCurrent=function(){return exports.__interactionsRef.current};exports.unstable_getThreadID=function(){return++l};
+exports.unstable_subscribe=function(e){m.add(e);1===m.size&&(exports.__subscriberRef.current={onInteractionScheduledWorkCompleted:p,onInteractionTraced:n,onWorkCanceled:u,onWorkScheduled:q,onWorkStarted:r,onWorkStopped:t})};
+exports.unstable_trace=function(e,d,a){var c=3<arguments.length&&void 0!==arguments[3]?arguments[3]:0,b={__count:1,id:g++,name:e,timestamp:d},f=exports.__interactionsRef.current,k=new Set(f);k.add(b);exports.__interactionsRef.current=k;var h=exports.__subscriberRef.current;try{if(null!==h)h.onInteractionTraced(b)}finally{try{if(null!==h)h.onWorkStarted(k,c)}finally{try{var v=a()}finally{exports.__interactionsRef.current=f;try{if(null!==h)h.onWorkStopped(k,c)}finally{if(b.__count--,null!==h&&0===b.__count)h.onInteractionScheduledWorkCompleted(b)}}}}return v};
+exports.unstable_unsubscribe=function(e){m.delete(e);0===m.size&&(exports.__subscriberRef.current=null)};
+exports.unstable_wrap=function(e){function d(){var d=exports.__interactionsRef.current;exports.__interactionsRef.current=c;b=exports.__subscriberRef.current;try{try{if(null!==b)b.onWorkStarted(c,a)}finally{try{var h=e.apply(void 0,arguments)}finally{if(exports.__interactionsRef.current=d,null!==b)b.onWorkStopped(c,a)}}return h}finally{f||(f=!0,c.forEach(function(a){a.__count--;if(null!==b&&0===a.__count)b.onInteractionScheduledWorkCompleted(a)}))}}var a=1<arguments.length&&void 0!==arguments[1]?arguments[1]:
+0,c=exports.__interactionsRef.current,b=exports.__subscriberRef.current;if(null!==b)b.onWorkScheduled(c,a);c.forEach(function(a){a.__count++});var f=!1;d.cancel=function(){b=exports.__subscriberRef.current;try{if(null!==b)b.onWorkCanceled(c,a)}finally{c.forEach(function(a){a.__count--;if(b&&0===a.__count)b.onInteractionScheduledWorkCompleted(a)})}};return d};
diff --git a/igv_component/node_modules/scheduler/cjs/scheduler-unstable_mock.development.js b/igv_component/node_modules/scheduler/cjs/scheduler-unstable_mock.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..a143004fd30361da8243c9f62abd9c8f26d64317
--- /dev/null
+++ b/igv_component/node_modules/scheduler/cjs/scheduler-unstable_mock.development.js
@@ -0,0 +1,857 @@
+/** @license React v0.19.1
+ * scheduler-unstable_mock.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+var enableSchedulerDebugging = false;
+var enableProfiling = true;
+
+var currentTime = 0;
+var scheduledCallback = null;
+var scheduledTimeout = null;
+var timeoutTime = -1;
+var yieldedValues = null;
+var expectedNumberOfYields = -1;
+var didStop = false;
+var isFlushing = false;
+var needsPaint = false;
+var shouldYieldForPaint = false;
+function requestHostCallback(callback) {
+  scheduledCallback = callback;
+}
+function requestHostTimeout(callback, ms) {
+  scheduledTimeout = callback;
+  timeoutTime = currentTime + ms;
+}
+function cancelHostTimeout() {
+  scheduledTimeout = null;
+  timeoutTime = -1;
+}
+function shouldYieldToHost() {
+  if (expectedNumberOfYields !== -1 && yieldedValues !== null && yieldedValues.length >= expectedNumberOfYields || shouldYieldForPaint && needsPaint) {
+    // We yielded at least as many values as expected. Stop flushing.
+    didStop = true;
+    return true;
+  }
+
+  return false;
+}
+function getCurrentTime() {
+  return currentTime;
+}
+function forceFrameRate() {// No-op
+}
+
+function unstable_flushNumberOfYields(count) {
+  if (isFlushing) {
+    throw new Error('Already flushing work.');
+  }
+
+  if (scheduledCallback !== null) {
+    var cb = scheduledCallback;
+    expectedNumberOfYields = count;
+    isFlushing = true;
+
+    try {
+      var hasMoreWork = true;
+
+      do {
+        hasMoreWork = cb(true, currentTime);
+      } while (hasMoreWork && !didStop);
+
+      if (!hasMoreWork) {
+        scheduledCallback = null;
+      }
+    } finally {
+      expectedNumberOfYields = -1;
+      didStop = false;
+      isFlushing = false;
+    }
+  }
+}
+function unstable_flushUntilNextPaint() {
+  if (isFlushing) {
+    throw new Error('Already flushing work.');
+  }
+
+  if (scheduledCallback !== null) {
+    var cb = scheduledCallback;
+    shouldYieldForPaint = true;
+    needsPaint = false;
+    isFlushing = true;
+
+    try {
+      var hasMoreWork = true;
+
+      do {
+        hasMoreWork = cb(true, currentTime);
+      } while (hasMoreWork && !didStop);
+
+      if (!hasMoreWork) {
+        scheduledCallback = null;
+      }
+    } finally {
+      shouldYieldForPaint = false;
+      didStop = false;
+      isFlushing = false;
+    }
+  }
+}
+function unstable_flushExpired() {
+  if (isFlushing) {
+    throw new Error('Already flushing work.');
+  }
+
+  if (scheduledCallback !== null) {
+    isFlushing = true;
+
+    try {
+      var hasMoreWork = scheduledCallback(false, currentTime);
+
+      if (!hasMoreWork) {
+        scheduledCallback = null;
+      }
+    } finally {
+      isFlushing = false;
+    }
+  }
+}
+function unstable_flushAllWithoutAsserting() {
+  // Returns false if no work was flushed.
+  if (isFlushing) {
+    throw new Error('Already flushing work.');
+  }
+
+  if (scheduledCallback !== null) {
+    var cb = scheduledCallback;
+    isFlushing = true;
+
+    try {
+      var hasMoreWork = true;
+
+      do {
+        hasMoreWork = cb(true, currentTime);
+      } while (hasMoreWork);
+
+      if (!hasMoreWork) {
+        scheduledCallback = null;
+      }
+
+      return true;
+    } finally {
+      isFlushing = false;
+    }
+  } else {
+    return false;
+  }
+}
+function unstable_clearYields() {
+  if (yieldedValues === null) {
+    return [];
+  }
+
+  var values = yieldedValues;
+  yieldedValues = null;
+  return values;
+}
+function unstable_flushAll() {
+  if (yieldedValues !== null) {
+    throw new Error('Log is not empty. Assert on the log of yielded values before ' + 'flushing additional work.');
+  }
+
+  unstable_flushAllWithoutAsserting();
+
+  if (yieldedValues !== null) {
+    throw new Error('While flushing work, something yielded a value. Use an ' + 'assertion helper to assert on the log of yielded values, e.g. ' + 'expect(Scheduler).toFlushAndYield([...])');
+  }
+}
+function unstable_yieldValue(value) {
+  if (yieldedValues === null) {
+    yieldedValues = [value];
+  } else {
+    yieldedValues.push(value);
+  }
+}
+function unstable_advanceTime(ms) {
+  currentTime += ms;
+
+  if (scheduledTimeout !== null && timeoutTime <= currentTime) {
+    scheduledTimeout(currentTime);
+    timeoutTime = -1;
+    scheduledTimeout = null;
+  }
+}
+function requestPaint() {
+  needsPaint = true;
+}
+
+function push(heap, node) {
+  var index = heap.length;
+  heap.push(node);
+  siftUp(heap, node, index);
+}
+function peek(heap) {
+  var first = heap[0];
+  return first === undefined ? null : first;
+}
+function pop(heap) {
+  var first = heap[0];
+
+  if (first !== undefined) {
+    var last = heap.pop();
+
+    if (last !== first) {
+      heap[0] = last;
+      siftDown(heap, last, 0);
+    }
+
+    return first;
+  } else {
+    return null;
+  }
+}
+
+function siftUp(heap, node, i) {
+  var index = i;
+
+  while (true) {
+    var parentIndex = index - 1 >>> 1;
+    var parent = heap[parentIndex];
+
+    if (parent !== undefined && compare(parent, node) > 0) {
+      // The parent is larger. Swap positions.
+      heap[parentIndex] = node;
+      heap[index] = parent;
+      index = parentIndex;
+    } else {
+      // The parent is smaller. Exit.
+      return;
+    }
+  }
+}
+
+function siftDown(heap, node, i) {
+  var index = i;
+  var length = heap.length;
+
+  while (index < length) {
+    var leftIndex = (index + 1) * 2 - 1;
+    var left = heap[leftIndex];
+    var rightIndex = leftIndex + 1;
+    var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those.
+
+    if (left !== undefined && compare(left, node) < 0) {
+      if (right !== undefined && compare(right, left) < 0) {
+        heap[index] = right;
+        heap[rightIndex] = node;
+        index = rightIndex;
+      } else {
+        heap[index] = left;
+        heap[leftIndex] = node;
+        index = leftIndex;
+      }
+    } else if (right !== undefined && compare(right, node) < 0) {
+      heap[index] = right;
+      heap[rightIndex] = node;
+      index = rightIndex;
+    } else {
+      // Neither child is smaller. Exit.
+      return;
+    }
+  }
+}
+
+function compare(a, b) {
+  // Compare sort index first, then task id.
+  var diff = a.sortIndex - b.sortIndex;
+  return diff !== 0 ? diff : a.id - b.id;
+}
+
+// TODO: Use symbols?
+var NoPriority = 0;
+var ImmediatePriority = 1;
+var UserBlockingPriority = 2;
+var NormalPriority = 3;
+var LowPriority = 4;
+var IdlePriority = 5;
+
+var runIdCounter = 0;
+var mainThreadIdCounter = 0;
+var profilingStateSize = 4;
+var sharedProfilingBuffer =  // $FlowFixMe Flow doesn't know about SharedArrayBuffer
+typeof SharedArrayBuffer === 'function' ? new SharedArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : // $FlowFixMe Flow doesn't know about ArrayBuffer
+typeof ArrayBuffer === 'function' ? new ArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : null // Don't crash the init path on IE9
+;
+var profilingState =  sharedProfilingBuffer !== null ? new Int32Array(sharedProfilingBuffer) : []; // We can't read this but it helps save bytes for null checks
+
+var PRIORITY = 0;
+var CURRENT_TASK_ID = 1;
+var CURRENT_RUN_ID = 2;
+var QUEUE_SIZE = 3;
+
+{
+  profilingState[PRIORITY] = NoPriority; // This is maintained with a counter, because the size of the priority queue
+  // array might include canceled tasks.
+
+  profilingState[QUEUE_SIZE] = 0;
+  profilingState[CURRENT_TASK_ID] = 0;
+} // Bytes per element is 4
+
+
+var INITIAL_EVENT_LOG_SIZE = 131072;
+var MAX_EVENT_LOG_SIZE = 524288; // Equivalent to 2 megabytes
+
+var eventLogSize = 0;
+var eventLogBuffer = null;
+var eventLog = null;
+var eventLogIndex = 0;
+var TaskStartEvent = 1;
+var TaskCompleteEvent = 2;
+var TaskErrorEvent = 3;
+var TaskCancelEvent = 4;
+var TaskRunEvent = 5;
+var TaskYieldEvent = 6;
+var SchedulerSuspendEvent = 7;
+var SchedulerResumeEvent = 8;
+
+function logEvent(entries) {
+  if (eventLog !== null) {
+    var offset = eventLogIndex;
+    eventLogIndex += entries.length;
+
+    if (eventLogIndex + 1 > eventLogSize) {
+      eventLogSize *= 2;
+
+      if (eventLogSize > MAX_EVENT_LOG_SIZE) {
+        // Using console['error'] to evade Babel and ESLint
+        console['error']("Scheduler Profiling: Event log exceeded maximum size. Don't " + 'forget to call `stopLoggingProfilingEvents()`.');
+        stopLoggingProfilingEvents();
+        return;
+      }
+
+      var newEventLog = new Int32Array(eventLogSize * 4);
+      newEventLog.set(eventLog);
+      eventLogBuffer = newEventLog.buffer;
+      eventLog = newEventLog;
+    }
+
+    eventLog.set(entries, offset);
+  }
+}
+
+function startLoggingProfilingEvents() {
+  eventLogSize = INITIAL_EVENT_LOG_SIZE;
+  eventLogBuffer = new ArrayBuffer(eventLogSize * 4);
+  eventLog = new Int32Array(eventLogBuffer);
+  eventLogIndex = 0;
+}
+function stopLoggingProfilingEvents() {
+  var buffer = eventLogBuffer;
+  eventLogSize = 0;
+  eventLogBuffer = null;
+  eventLog = null;
+  eventLogIndex = 0;
+  return buffer;
+}
+function markTaskStart(task, ms) {
+  {
+    profilingState[QUEUE_SIZE]++;
+
+    if (eventLog !== null) {
+      // performance.now returns a float, representing milliseconds. When the
+      // event is logged, it's coerced to an int. Convert to microseconds to
+      // maintain extra degrees of precision.
+      logEvent([TaskStartEvent, ms * 1000, task.id, task.priorityLevel]);
+    }
+  }
+}
+function markTaskCompleted(task, ms) {
+  {
+    profilingState[PRIORITY] = NoPriority;
+    profilingState[CURRENT_TASK_ID] = 0;
+    profilingState[QUEUE_SIZE]--;
+
+    if (eventLog !== null) {
+      logEvent([TaskCompleteEvent, ms * 1000, task.id]);
+    }
+  }
+}
+function markTaskCanceled(task, ms) {
+  {
+    profilingState[QUEUE_SIZE]--;
+
+    if (eventLog !== null) {
+      logEvent([TaskCancelEvent, ms * 1000, task.id]);
+    }
+  }
+}
+function markTaskErrored(task, ms) {
+  {
+    profilingState[PRIORITY] = NoPriority;
+    profilingState[CURRENT_TASK_ID] = 0;
+    profilingState[QUEUE_SIZE]--;
+
+    if (eventLog !== null) {
+      logEvent([TaskErrorEvent, ms * 1000, task.id]);
+    }
+  }
+}
+function markTaskRun(task, ms) {
+  {
+    runIdCounter++;
+    profilingState[PRIORITY] = task.priorityLevel;
+    profilingState[CURRENT_TASK_ID] = task.id;
+    profilingState[CURRENT_RUN_ID] = runIdCounter;
+
+    if (eventLog !== null) {
+      logEvent([TaskRunEvent, ms * 1000, task.id, runIdCounter]);
+    }
+  }
+}
+function markTaskYield(task, ms) {
+  {
+    profilingState[PRIORITY] = NoPriority;
+    profilingState[CURRENT_TASK_ID] = 0;
+    profilingState[CURRENT_RUN_ID] = 0;
+
+    if (eventLog !== null) {
+      logEvent([TaskYieldEvent, ms * 1000, task.id, runIdCounter]);
+    }
+  }
+}
+function markSchedulerSuspended(ms) {
+  {
+    mainThreadIdCounter++;
+
+    if (eventLog !== null) {
+      logEvent([SchedulerSuspendEvent, ms * 1000, mainThreadIdCounter]);
+    }
+  }
+}
+function markSchedulerUnsuspended(ms) {
+  {
+    if (eventLog !== null) {
+      logEvent([SchedulerResumeEvent, ms * 1000, mainThreadIdCounter]);
+    }
+  }
+}
+
+/* eslint-disable no-var */
+// Math.pow(2, 30) - 1
+// 0b111111111111111111111111111111
+
+var maxSigned31BitInt = 1073741823; // Times out immediately
+
+var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out
+
+var USER_BLOCKING_PRIORITY = 250;
+var NORMAL_PRIORITY_TIMEOUT = 5000;
+var LOW_PRIORITY_TIMEOUT = 10000; // Never times out
+
+var IDLE_PRIORITY = maxSigned31BitInt; // Tasks are stored on a min heap
+
+var taskQueue = [];
+var timerQueue = []; // Incrementing id counter. Used to maintain insertion order.
+
+var taskIdCounter = 1; // Pausing the scheduler is useful for debugging.
+var currentTask = null;
+var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy.
+
+var isPerformingWork = false;
+var isHostCallbackScheduled = false;
+var isHostTimeoutScheduled = false;
+
+function advanceTimers(currentTime) {
+  // Check for tasks that are no longer delayed and add them to the queue.
+  var timer = peek(timerQueue);
+
+  while (timer !== null) {
+    if (timer.callback === null) {
+      // Timer was cancelled.
+      pop(timerQueue);
+    } else if (timer.startTime <= currentTime) {
+      // Timer fired. Transfer to the task queue.
+      pop(timerQueue);
+      timer.sortIndex = timer.expirationTime;
+      push(taskQueue, timer);
+
+      {
+        markTaskStart(timer, currentTime);
+        timer.isQueued = true;
+      }
+    } else {
+      // Remaining timers are pending.
+      return;
+    }
+
+    timer = peek(timerQueue);
+  }
+}
+
+function handleTimeout(currentTime) {
+  isHostTimeoutScheduled = false;
+  advanceTimers(currentTime);
+
+  if (!isHostCallbackScheduled) {
+    if (peek(taskQueue) !== null) {
+      isHostCallbackScheduled = true;
+      requestHostCallback(flushWork);
+    } else {
+      var firstTimer = peek(timerQueue);
+
+      if (firstTimer !== null) {
+        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+      }
+    }
+  }
+}
+
+function flushWork(hasTimeRemaining, initialTime) {
+  {
+    markSchedulerUnsuspended(initialTime);
+  } // We'll need a host callback the next time work is scheduled.
+
+
+  isHostCallbackScheduled = false;
+
+  if (isHostTimeoutScheduled) {
+    // We scheduled a timeout but it's no longer needed. Cancel it.
+    isHostTimeoutScheduled = false;
+    cancelHostTimeout();
+  }
+
+  isPerformingWork = true;
+  var previousPriorityLevel = currentPriorityLevel;
+
+  try {
+    if (enableProfiling) {
+      try {
+        return workLoop(hasTimeRemaining, initialTime);
+      } catch (error) {
+        if (currentTask !== null) {
+          var currentTime = getCurrentTime();
+          markTaskErrored(currentTask, currentTime);
+          currentTask.isQueued = false;
+        }
+
+        throw error;
+      }
+    } else {
+      // No catch in prod codepath.
+      return workLoop(hasTimeRemaining, initialTime);
+    }
+  } finally {
+    currentTask = null;
+    currentPriorityLevel = previousPriorityLevel;
+    isPerformingWork = false;
+
+    {
+      var _currentTime = getCurrentTime();
+
+      markSchedulerSuspended(_currentTime);
+    }
+  }
+}
+
+function workLoop(hasTimeRemaining, initialTime) {
+  var currentTime = initialTime;
+  advanceTimers(currentTime);
+  currentTask = peek(taskQueue);
+
+  while (currentTask !== null && !(enableSchedulerDebugging )) {
+    if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) {
+      // This currentTask hasn't expired, and we've reached the deadline.
+      break;
+    }
+
+    var callback = currentTask.callback;
+
+    if (callback !== null) {
+      currentTask.callback = null;
+      currentPriorityLevel = currentTask.priorityLevel;
+      var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
+      markTaskRun(currentTask, currentTime);
+      var continuationCallback = callback(didUserCallbackTimeout);
+      currentTime = getCurrentTime();
+
+      if (typeof continuationCallback === 'function') {
+        currentTask.callback = continuationCallback;
+        markTaskYield(currentTask, currentTime);
+      } else {
+        {
+          markTaskCompleted(currentTask, currentTime);
+          currentTask.isQueued = false;
+        }
+
+        if (currentTask === peek(taskQueue)) {
+          pop(taskQueue);
+        }
+      }
+
+      advanceTimers(currentTime);
+    } else {
+      pop(taskQueue);
+    }
+
+    currentTask = peek(taskQueue);
+  } // Return whether there's additional work
+
+
+  if (currentTask !== null) {
+    return true;
+  } else {
+    var firstTimer = peek(timerQueue);
+
+    if (firstTimer !== null) {
+      requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+    }
+
+    return false;
+  }
+}
+
+function unstable_runWithPriority(priorityLevel, eventHandler) {
+  switch (priorityLevel) {
+    case ImmediatePriority:
+    case UserBlockingPriority:
+    case NormalPriority:
+    case LowPriority:
+    case IdlePriority:
+      break;
+
+    default:
+      priorityLevel = NormalPriority;
+  }
+
+  var previousPriorityLevel = currentPriorityLevel;
+  currentPriorityLevel = priorityLevel;
+
+  try {
+    return eventHandler();
+  } finally {
+    currentPriorityLevel = previousPriorityLevel;
+  }
+}
+
+function unstable_next(eventHandler) {
+  var priorityLevel;
+
+  switch (currentPriorityLevel) {
+    case ImmediatePriority:
+    case UserBlockingPriority:
+    case NormalPriority:
+      // Shift down to normal priority
+      priorityLevel = NormalPriority;
+      break;
+
+    default:
+      // Anything lower than normal priority should remain at the current level.
+      priorityLevel = currentPriorityLevel;
+      break;
+  }
+
+  var previousPriorityLevel = currentPriorityLevel;
+  currentPriorityLevel = priorityLevel;
+
+  try {
+    return eventHandler();
+  } finally {
+    currentPriorityLevel = previousPriorityLevel;
+  }
+}
+
+function unstable_wrapCallback(callback) {
+  var parentPriorityLevel = currentPriorityLevel;
+  return function () {
+    // This is a fork of runWithPriority, inlined for performance.
+    var previousPriorityLevel = currentPriorityLevel;
+    currentPriorityLevel = parentPriorityLevel;
+
+    try {
+      return callback.apply(this, arguments);
+    } finally {
+      currentPriorityLevel = previousPriorityLevel;
+    }
+  };
+}
+
+function timeoutForPriorityLevel(priorityLevel) {
+  switch (priorityLevel) {
+    case ImmediatePriority:
+      return IMMEDIATE_PRIORITY_TIMEOUT;
+
+    case UserBlockingPriority:
+      return USER_BLOCKING_PRIORITY;
+
+    case IdlePriority:
+      return IDLE_PRIORITY;
+
+    case LowPriority:
+      return LOW_PRIORITY_TIMEOUT;
+
+    case NormalPriority:
+    default:
+      return NORMAL_PRIORITY_TIMEOUT;
+  }
+}
+
+function unstable_scheduleCallback(priorityLevel, callback, options) {
+  var currentTime = getCurrentTime();
+  var startTime;
+  var timeout;
+
+  if (typeof options === 'object' && options !== null) {
+    var delay = options.delay;
+
+    if (typeof delay === 'number' && delay > 0) {
+      startTime = currentTime + delay;
+    } else {
+      startTime = currentTime;
+    }
+
+    timeout = typeof options.timeout === 'number' ? options.timeout : timeoutForPriorityLevel(priorityLevel);
+  } else {
+    timeout = timeoutForPriorityLevel(priorityLevel);
+    startTime = currentTime;
+  }
+
+  var expirationTime = startTime + timeout;
+  var newTask = {
+    id: taskIdCounter++,
+    callback: callback,
+    priorityLevel: priorityLevel,
+    startTime: startTime,
+    expirationTime: expirationTime,
+    sortIndex: -1
+  };
+
+  {
+    newTask.isQueued = false;
+  }
+
+  if (startTime > currentTime) {
+    // This is a delayed task.
+    newTask.sortIndex = startTime;
+    push(timerQueue, newTask);
+
+    if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
+      // All tasks are delayed, and this is the task with the earliest delay.
+      if (isHostTimeoutScheduled) {
+        // Cancel an existing timeout.
+        cancelHostTimeout();
+      } else {
+        isHostTimeoutScheduled = true;
+      } // Schedule a timeout.
+
+
+      requestHostTimeout(handleTimeout, startTime - currentTime);
+    }
+  } else {
+    newTask.sortIndex = expirationTime;
+    push(taskQueue, newTask);
+
+    {
+      markTaskStart(newTask, currentTime);
+      newTask.isQueued = true;
+    } // Schedule a host callback, if needed. If we're already performing work,
+    // wait until the next time we yield.
+
+
+    if (!isHostCallbackScheduled && !isPerformingWork) {
+      isHostCallbackScheduled = true;
+      requestHostCallback(flushWork);
+    }
+  }
+
+  return newTask;
+}
+
+function unstable_pauseExecution() {
+}
+
+function unstable_continueExecution() {
+
+  if (!isHostCallbackScheduled && !isPerformingWork) {
+    isHostCallbackScheduled = true;
+    requestHostCallback(flushWork);
+  }
+}
+
+function unstable_getFirstCallbackNode() {
+  return peek(taskQueue);
+}
+
+function unstable_cancelCallback(task) {
+  {
+    if (task.isQueued) {
+      var currentTime = getCurrentTime();
+      markTaskCanceled(task, currentTime);
+      task.isQueued = false;
+    }
+  } // Null out the callback to indicate the task has been canceled. (Can't
+  // remove from the queue because you can't remove arbitrary nodes from an
+  // array based heap, only the first one.)
+
+
+  task.callback = null;
+}
+
+function unstable_getCurrentPriorityLevel() {
+  return currentPriorityLevel;
+}
+
+function unstable_shouldYield() {
+  var currentTime = getCurrentTime();
+  advanceTimers(currentTime);
+  var firstTask = peek(taskQueue);
+  return firstTask !== currentTask && currentTask !== null && firstTask !== null && firstTask.callback !== null && firstTask.startTime <= currentTime && firstTask.expirationTime < currentTask.expirationTime || shouldYieldToHost();
+}
+
+var unstable_requestPaint = requestPaint;
+var unstable_Profiling =  {
+  startLoggingProfilingEvents: startLoggingProfilingEvents,
+  stopLoggingProfilingEvents: stopLoggingProfilingEvents,
+  sharedProfilingBuffer: sharedProfilingBuffer
+} ;
+
+exports.unstable_IdlePriority = IdlePriority;
+exports.unstable_ImmediatePriority = ImmediatePriority;
+exports.unstable_LowPriority = LowPriority;
+exports.unstable_NormalPriority = NormalPriority;
+exports.unstable_Profiling = unstable_Profiling;
+exports.unstable_UserBlockingPriority = UserBlockingPriority;
+exports.unstable_advanceTime = unstable_advanceTime;
+exports.unstable_cancelCallback = unstable_cancelCallback;
+exports.unstable_clearYields = unstable_clearYields;
+exports.unstable_continueExecution = unstable_continueExecution;
+exports.unstable_flushAll = unstable_flushAll;
+exports.unstable_flushAllWithoutAsserting = unstable_flushAllWithoutAsserting;
+exports.unstable_flushExpired = unstable_flushExpired;
+exports.unstable_flushNumberOfYields = unstable_flushNumberOfYields;
+exports.unstable_flushUntilNextPaint = unstable_flushUntilNextPaint;
+exports.unstable_forceFrameRate = forceFrameRate;
+exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
+exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
+exports.unstable_next = unstable_next;
+exports.unstable_now = getCurrentTime;
+exports.unstable_pauseExecution = unstable_pauseExecution;
+exports.unstable_requestPaint = unstable_requestPaint;
+exports.unstable_runWithPriority = unstable_runWithPriority;
+exports.unstable_scheduleCallback = unstable_scheduleCallback;
+exports.unstable_shouldYield = unstable_shouldYield;
+exports.unstable_wrapCallback = unstable_wrapCallback;
+exports.unstable_yieldValue = unstable_yieldValue;
+  })();
+}
diff --git a/igv_component/node_modules/scheduler/cjs/scheduler-unstable_mock.production.min.js b/igv_component/node_modules/scheduler/cjs/scheduler-unstable_mock.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..4c5d1bbda41d6ca57eda8798b67a36c966a6a692
--- /dev/null
+++ b/igv_component/node_modules/scheduler/cjs/scheduler-unstable_mock.production.min.js
@@ -0,0 +1,20 @@
+/** @license React v0.19.1
+ * scheduler-unstable_mock.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';var f=0,g=null,h=null,k=-1,l=null,m=-1,n=!1,p=!1,q=!1,r=!1;function t(){return-1!==m&&null!==l&&l.length>=m||r&&q?n=!0:!1}function x(){if(p)throw Error("Already flushing work.");if(null!==g){var a=g;p=!0;try{var b=!0;do b=a(!0,f);while(b);b||(g=null);return!0}finally{p=!1}}else return!1}function z(a,b){var c=a.length;a.push(b);a:for(;;){var d=c-1>>>1,e=a[d];if(void 0!==e&&0<A(e,b))a[d]=b,a[c]=e,c=d;else break a}}function B(a){a=a[0];return void 0===a?null:a}
+function C(a){var b=a[0];if(void 0!==b){var c=a.pop();if(c!==b){a[0]=c;a:for(var d=0,e=a.length;d<e;){var u=2*(d+1)-1,v=a[u],w=u+1,y=a[w];if(void 0!==v&&0>A(v,c))void 0!==y&&0>A(y,v)?(a[d]=y,a[w]=c,d=w):(a[d]=v,a[u]=c,d=u);else if(void 0!==y&&0>A(y,c))a[d]=y,a[w]=c,d=w;else break a}}return b}return null}function A(a,b){var c=a.sortIndex-b.sortIndex;return 0!==c?c:a.id-b.id}var D=[],E=[],F=1,G=null,H=3,I=!1,J=!1,K=!1;
+function L(a){for(var b=B(E);null!==b;){if(null===b.callback)C(E);else if(b.startTime<=a)C(E),b.sortIndex=b.expirationTime,z(D,b);else break;b=B(E)}}function M(a){K=!1;L(a);if(!J)if(null!==B(D))J=!0,g=N;else{var b=B(E);null!==b&&(a=b.startTime-a,h=M,k=f+a)}}
+function N(a,b){J=!1;K&&(K=!1,h=null,k=-1);I=!0;var c=H;try{L(b);for(G=B(D);null!==G&&(!(G.expirationTime>b)||a&&!t());){var d=G.callback;if(null!==d){G.callback=null;H=G.priorityLevel;var e=d(G.expirationTime<=b);b=f;"function"===typeof e?G.callback=e:G===B(D)&&C(D);L(b)}else C(D);G=B(D)}if(null!==G)var u=!0;else{var v=B(E);if(null!==v){var w=v.startTime-b;h=M;k=f+w}u=!1}return u}finally{G=null,H=c,I=!1}}
+function O(a){switch(a){case 1:return-1;case 2:return 250;case 5:return 1073741823;case 4:return 1E4;default:return 5E3}}exports.unstable_IdlePriority=5;exports.unstable_ImmediatePriority=1;exports.unstable_LowPriority=4;exports.unstable_NormalPriority=3;exports.unstable_Profiling=null;exports.unstable_UserBlockingPriority=2;exports.unstable_advanceTime=function(a){f+=a;null!==h&&k<=f&&(h(f),k=-1,h=null)};exports.unstable_cancelCallback=function(a){a.callback=null};
+exports.unstable_clearYields=function(){if(null===l)return[];var a=l;l=null;return a};exports.unstable_continueExecution=function(){J||I||(J=!0,g=N)};exports.unstable_flushAll=function(){if(null!==l)throw Error("Log is not empty. Assert on the log of yielded values before flushing additional work.");x();if(null!==l)throw Error("While flushing work, something yielded a value. Use an assertion helper to assert on the log of yielded values, e.g. expect(Scheduler).toFlushAndYield([...])");};
+exports.unstable_flushAllWithoutAsserting=x;exports.unstable_flushExpired=function(){if(p)throw Error("Already flushing work.");if(null!==g){p=!0;try{g(!1,f)||(g=null)}finally{p=!1}}};exports.unstable_flushNumberOfYields=function(a){if(p)throw Error("Already flushing work.");if(null!==g){var b=g;m=a;p=!0;try{a=!0;do a=b(!0,f);while(a&&!n);a||(g=null)}finally{m=-1,p=n=!1}}};
+exports.unstable_flushUntilNextPaint=function(){if(p)throw Error("Already flushing work.");if(null!==g){var a=g;r=!0;q=!1;p=!0;try{var b=!0;do b=a(!0,f);while(b&&!n);b||(g=null)}finally{p=n=r=!1}}};exports.unstable_forceFrameRate=function(){};exports.unstable_getCurrentPriorityLevel=function(){return H};exports.unstable_getFirstCallbackNode=function(){return B(D)};exports.unstable_next=function(a){switch(H){case 1:case 2:case 3:var b=3;break;default:b=H}var c=H;H=b;try{return a()}finally{H=c}};
+exports.unstable_now=function(){return f};exports.unstable_pauseExecution=function(){};exports.unstable_requestPaint=function(){q=!0};exports.unstable_runWithPriority=function(a,b){switch(a){case 1:case 2:case 3:case 4:case 5:break;default:a=3}var c=H;H=a;try{return b()}finally{H=c}};
+exports.unstable_scheduleCallback=function(a,b,c){var d=f;if("object"===typeof c&&null!==c){var e=c.delay;e="number"===typeof e&&0<e?d+e:d;c="number"===typeof c.timeout?c.timeout:O(a)}else c=O(a),e=d;c=e+c;a={id:F++,callback:b,priorityLevel:a,startTime:e,expirationTime:c,sortIndex:-1};e>d?(a.sortIndex=e,z(E,a),null===B(D)&&a===B(E)&&(K?(h=null,k=-1):K=!0,h=M,k=f+(e-d))):(a.sortIndex=c,z(D,a),J||I||(J=!0,g=N));return a};
+exports.unstable_shouldYield=function(){var a=f;L(a);var b=B(D);return b!==G&&null!==G&&null!==b&&null!==b.callback&&b.startTime<=a&&b.expirationTime<G.expirationTime||t()};exports.unstable_wrapCallback=function(a){var b=H;return function(){var c=H;H=b;try{return a.apply(this,arguments)}finally{H=c}}};exports.unstable_yieldValue=function(a){null===l?l=[a]:l.push(a)};
diff --git a/igv_component/node_modules/scheduler/cjs/scheduler.development.js b/igv_component/node_modules/scheduler/cjs/scheduler.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..bfc99a2f682b3eda5f4bfba0061946b74a8e7a7c
--- /dev/null
+++ b/igv_component/node_modules/scheduler/cjs/scheduler.development.js
@@ -0,0 +1,858 @@
+/** @license React v0.19.1
+ * scheduler.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+
+
+if (process.env.NODE_ENV !== "production") {
+  (function() {
+'use strict';
+
+var enableSchedulerDebugging = false;
+var enableProfiling = true;
+
+var requestHostCallback;
+var requestHostTimeout;
+var cancelHostTimeout;
+var shouldYieldToHost;
+var requestPaint;
+
+if ( // If Scheduler runs in a non-DOM environment, it falls back to a naive
+// implementation using setTimeout.
+typeof window === 'undefined' || // Check if MessageChannel is supported, too.
+typeof MessageChannel !== 'function') {
+  // If this accidentally gets imported in a non-browser environment, e.g. JavaScriptCore,
+  // fallback to a naive implementation.
+  var _callback = null;
+  var _timeoutID = null;
+
+  var _flushCallback = function () {
+    if (_callback !== null) {
+      try {
+        var currentTime = exports.unstable_now();
+        var hasRemainingTime = true;
+
+        _callback(hasRemainingTime, currentTime);
+
+        _callback = null;
+      } catch (e) {
+        setTimeout(_flushCallback, 0);
+        throw e;
+      }
+    }
+  };
+
+  var initialTime = Date.now();
+
+  exports.unstable_now = function () {
+    return Date.now() - initialTime;
+  };
+
+  requestHostCallback = function (cb) {
+    if (_callback !== null) {
+      // Protect against re-entrancy.
+      setTimeout(requestHostCallback, 0, cb);
+    } else {
+      _callback = cb;
+      setTimeout(_flushCallback, 0);
+    }
+  };
+
+  requestHostTimeout = function (cb, ms) {
+    _timeoutID = setTimeout(cb, ms);
+  };
+
+  cancelHostTimeout = function () {
+    clearTimeout(_timeoutID);
+  };
+
+  shouldYieldToHost = function () {
+    return false;
+  };
+
+  requestPaint = exports.unstable_forceFrameRate = function () {};
+} else {
+  // Capture local references to native APIs, in case a polyfill overrides them.
+  var performance = window.performance;
+  var _Date = window.Date;
+  var _setTimeout = window.setTimeout;
+  var _clearTimeout = window.clearTimeout;
+
+  if (typeof console !== 'undefined') {
+    // TODO: Scheduler no longer requires these methods to be polyfilled. But
+    // maybe we want to continue warning if they don't exist, to preserve the
+    // option to rely on it in the future?
+    var requestAnimationFrame = window.requestAnimationFrame;
+    var cancelAnimationFrame = window.cancelAnimationFrame; // TODO: Remove fb.me link
+
+    if (typeof requestAnimationFrame !== 'function') {
+      // Using console['error'] to evade Babel and ESLint
+      console['error']("This browser doesn't support requestAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://fb.me/react-polyfills');
+    }
+
+    if (typeof cancelAnimationFrame !== 'function') {
+      // Using console['error'] to evade Babel and ESLint
+      console['error']("This browser doesn't support cancelAnimationFrame. " + 'Make sure that you load a ' + 'polyfill in older browsers. https://fb.me/react-polyfills');
+    }
+  }
+
+  if (typeof performance === 'object' && typeof performance.now === 'function') {
+    exports.unstable_now = function () {
+      return performance.now();
+    };
+  } else {
+    var _initialTime = _Date.now();
+
+    exports.unstable_now = function () {
+      return _Date.now() - _initialTime;
+    };
+  }
+
+  var isMessageLoopRunning = false;
+  var scheduledHostCallback = null;
+  var taskTimeoutID = -1; // Scheduler periodically yields in case there is other work on the main
+  // thread, like user events. By default, it yields multiple times per frame.
+  // It does not attempt to align with frame boundaries, since most tasks don't
+  // need to be frame aligned; for those that do, use requestAnimationFrame.
+
+  var yieldInterval = 5;
+  var deadline = 0; // TODO: Make this configurable
+
+  {
+    // `isInputPending` is not available. Since we have no way of knowing if
+    // there's pending input, always yield at the end of the frame.
+    shouldYieldToHost = function () {
+      return exports.unstable_now() >= deadline;
+    }; // Since we yield every frame regardless, `requestPaint` has no effect.
+
+
+    requestPaint = function () {};
+  }
+
+  exports.unstable_forceFrameRate = function (fps) {
+    if (fps < 0 || fps > 125) {
+      // Using console['error'] to evade Babel and ESLint
+      console['error']('forceFrameRate takes a positive int between 0 and 125, ' + 'forcing framerates higher than 125 fps is not unsupported');
+      return;
+    }
+
+    if (fps > 0) {
+      yieldInterval = Math.floor(1000 / fps);
+    } else {
+      // reset the framerate
+      yieldInterval = 5;
+    }
+  };
+
+  var performWorkUntilDeadline = function () {
+    if (scheduledHostCallback !== null) {
+      var currentTime = exports.unstable_now(); // Yield after `yieldInterval` ms, regardless of where we are in the vsync
+      // cycle. This means there's always time remaining at the beginning of
+      // the message event.
+
+      deadline = currentTime + yieldInterval;
+      var hasTimeRemaining = true;
+
+      try {
+        var hasMoreWork = scheduledHostCallback(hasTimeRemaining, currentTime);
+
+        if (!hasMoreWork) {
+          isMessageLoopRunning = false;
+          scheduledHostCallback = null;
+        } else {
+          // If there's more work, schedule the next message event at the end
+          // of the preceding one.
+          port.postMessage(null);
+        }
+      } catch (error) {
+        // If a scheduler task throws, exit the current browser task so the
+        // error can be observed.
+        port.postMessage(null);
+        throw error;
+      }
+    } else {
+      isMessageLoopRunning = false;
+    } // Yielding to the browser will give it a chance to paint, so we can
+  };
+
+  var channel = new MessageChannel();
+  var port = channel.port2;
+  channel.port1.onmessage = performWorkUntilDeadline;
+
+  requestHostCallback = function (callback) {
+    scheduledHostCallback = callback;
+
+    if (!isMessageLoopRunning) {
+      isMessageLoopRunning = true;
+      port.postMessage(null);
+    }
+  };
+
+  requestHostTimeout = function (callback, ms) {
+    taskTimeoutID = _setTimeout(function () {
+      callback(exports.unstable_now());
+    }, ms);
+  };
+
+  cancelHostTimeout = function () {
+    _clearTimeout(taskTimeoutID);
+
+    taskTimeoutID = -1;
+  };
+}
+
+function push(heap, node) {
+  var index = heap.length;
+  heap.push(node);
+  siftUp(heap, node, index);
+}
+function peek(heap) {
+  var first = heap[0];
+  return first === undefined ? null : first;
+}
+function pop(heap) {
+  var first = heap[0];
+
+  if (first !== undefined) {
+    var last = heap.pop();
+
+    if (last !== first) {
+      heap[0] = last;
+      siftDown(heap, last, 0);
+    }
+
+    return first;
+  } else {
+    return null;
+  }
+}
+
+function siftUp(heap, node, i) {
+  var index = i;
+
+  while (true) {
+    var parentIndex = index - 1 >>> 1;
+    var parent = heap[parentIndex];
+
+    if (parent !== undefined && compare(parent, node) > 0) {
+      // The parent is larger. Swap positions.
+      heap[parentIndex] = node;
+      heap[index] = parent;
+      index = parentIndex;
+    } else {
+      // The parent is smaller. Exit.
+      return;
+    }
+  }
+}
+
+function siftDown(heap, node, i) {
+  var index = i;
+  var length = heap.length;
+
+  while (index < length) {
+    var leftIndex = (index + 1) * 2 - 1;
+    var left = heap[leftIndex];
+    var rightIndex = leftIndex + 1;
+    var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those.
+
+    if (left !== undefined && compare(left, node) < 0) {
+      if (right !== undefined && compare(right, left) < 0) {
+        heap[index] = right;
+        heap[rightIndex] = node;
+        index = rightIndex;
+      } else {
+        heap[index] = left;
+        heap[leftIndex] = node;
+        index = leftIndex;
+      }
+    } else if (right !== undefined && compare(right, node) < 0) {
+      heap[index] = right;
+      heap[rightIndex] = node;
+      index = rightIndex;
+    } else {
+      // Neither child is smaller. Exit.
+      return;
+    }
+  }
+}
+
+function compare(a, b) {
+  // Compare sort index first, then task id.
+  var diff = a.sortIndex - b.sortIndex;
+  return diff !== 0 ? diff : a.id - b.id;
+}
+
+// TODO: Use symbols?
+var NoPriority = 0;
+var ImmediatePriority = 1;
+var UserBlockingPriority = 2;
+var NormalPriority = 3;
+var LowPriority = 4;
+var IdlePriority = 5;
+
+var runIdCounter = 0;
+var mainThreadIdCounter = 0;
+var profilingStateSize = 4;
+var sharedProfilingBuffer =  // $FlowFixMe Flow doesn't know about SharedArrayBuffer
+typeof SharedArrayBuffer === 'function' ? new SharedArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : // $FlowFixMe Flow doesn't know about ArrayBuffer
+typeof ArrayBuffer === 'function' ? new ArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : null // Don't crash the init path on IE9
+;
+var profilingState =  sharedProfilingBuffer !== null ? new Int32Array(sharedProfilingBuffer) : []; // We can't read this but it helps save bytes for null checks
+
+var PRIORITY = 0;
+var CURRENT_TASK_ID = 1;
+var CURRENT_RUN_ID = 2;
+var QUEUE_SIZE = 3;
+
+{
+  profilingState[PRIORITY] = NoPriority; // This is maintained with a counter, because the size of the priority queue
+  // array might include canceled tasks.
+
+  profilingState[QUEUE_SIZE] = 0;
+  profilingState[CURRENT_TASK_ID] = 0;
+} // Bytes per element is 4
+
+
+var INITIAL_EVENT_LOG_SIZE = 131072;
+var MAX_EVENT_LOG_SIZE = 524288; // Equivalent to 2 megabytes
+
+var eventLogSize = 0;
+var eventLogBuffer = null;
+var eventLog = null;
+var eventLogIndex = 0;
+var TaskStartEvent = 1;
+var TaskCompleteEvent = 2;
+var TaskErrorEvent = 3;
+var TaskCancelEvent = 4;
+var TaskRunEvent = 5;
+var TaskYieldEvent = 6;
+var SchedulerSuspendEvent = 7;
+var SchedulerResumeEvent = 8;
+
+function logEvent(entries) {
+  if (eventLog !== null) {
+    var offset = eventLogIndex;
+    eventLogIndex += entries.length;
+
+    if (eventLogIndex + 1 > eventLogSize) {
+      eventLogSize *= 2;
+
+      if (eventLogSize > MAX_EVENT_LOG_SIZE) {
+        // Using console['error'] to evade Babel and ESLint
+        console['error']("Scheduler Profiling: Event log exceeded maximum size. Don't " + 'forget to call `stopLoggingProfilingEvents()`.');
+        stopLoggingProfilingEvents();
+        return;
+      }
+
+      var newEventLog = new Int32Array(eventLogSize * 4);
+      newEventLog.set(eventLog);
+      eventLogBuffer = newEventLog.buffer;
+      eventLog = newEventLog;
+    }
+
+    eventLog.set(entries, offset);
+  }
+}
+
+function startLoggingProfilingEvents() {
+  eventLogSize = INITIAL_EVENT_LOG_SIZE;
+  eventLogBuffer = new ArrayBuffer(eventLogSize * 4);
+  eventLog = new Int32Array(eventLogBuffer);
+  eventLogIndex = 0;
+}
+function stopLoggingProfilingEvents() {
+  var buffer = eventLogBuffer;
+  eventLogSize = 0;
+  eventLogBuffer = null;
+  eventLog = null;
+  eventLogIndex = 0;
+  return buffer;
+}
+function markTaskStart(task, ms) {
+  {
+    profilingState[QUEUE_SIZE]++;
+
+    if (eventLog !== null) {
+      // performance.now returns a float, representing milliseconds. When the
+      // event is logged, it's coerced to an int. Convert to microseconds to
+      // maintain extra degrees of precision.
+      logEvent([TaskStartEvent, ms * 1000, task.id, task.priorityLevel]);
+    }
+  }
+}
+function markTaskCompleted(task, ms) {
+  {
+    profilingState[PRIORITY] = NoPriority;
+    profilingState[CURRENT_TASK_ID] = 0;
+    profilingState[QUEUE_SIZE]--;
+
+    if (eventLog !== null) {
+      logEvent([TaskCompleteEvent, ms * 1000, task.id]);
+    }
+  }
+}
+function markTaskCanceled(task, ms) {
+  {
+    profilingState[QUEUE_SIZE]--;
+
+    if (eventLog !== null) {
+      logEvent([TaskCancelEvent, ms * 1000, task.id]);
+    }
+  }
+}
+function markTaskErrored(task, ms) {
+  {
+    profilingState[PRIORITY] = NoPriority;
+    profilingState[CURRENT_TASK_ID] = 0;
+    profilingState[QUEUE_SIZE]--;
+
+    if (eventLog !== null) {
+      logEvent([TaskErrorEvent, ms * 1000, task.id]);
+    }
+  }
+}
+function markTaskRun(task, ms) {
+  {
+    runIdCounter++;
+    profilingState[PRIORITY] = task.priorityLevel;
+    profilingState[CURRENT_TASK_ID] = task.id;
+    profilingState[CURRENT_RUN_ID] = runIdCounter;
+
+    if (eventLog !== null) {
+      logEvent([TaskRunEvent, ms * 1000, task.id, runIdCounter]);
+    }
+  }
+}
+function markTaskYield(task, ms) {
+  {
+    profilingState[PRIORITY] = NoPriority;
+    profilingState[CURRENT_TASK_ID] = 0;
+    profilingState[CURRENT_RUN_ID] = 0;
+
+    if (eventLog !== null) {
+      logEvent([TaskYieldEvent, ms * 1000, task.id, runIdCounter]);
+    }
+  }
+}
+function markSchedulerSuspended(ms) {
+  {
+    mainThreadIdCounter++;
+
+    if (eventLog !== null) {
+      logEvent([SchedulerSuspendEvent, ms * 1000, mainThreadIdCounter]);
+    }
+  }
+}
+function markSchedulerUnsuspended(ms) {
+  {
+    if (eventLog !== null) {
+      logEvent([SchedulerResumeEvent, ms * 1000, mainThreadIdCounter]);
+    }
+  }
+}
+
+/* eslint-disable no-var */
+// Math.pow(2, 30) - 1
+// 0b111111111111111111111111111111
+
+var maxSigned31BitInt = 1073741823; // Times out immediately
+
+var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out
+
+var USER_BLOCKING_PRIORITY = 250;
+var NORMAL_PRIORITY_TIMEOUT = 5000;
+var LOW_PRIORITY_TIMEOUT = 10000; // Never times out
+
+var IDLE_PRIORITY = maxSigned31BitInt; // Tasks are stored on a min heap
+
+var taskQueue = [];
+var timerQueue = []; // Incrementing id counter. Used to maintain insertion order.
+
+var taskIdCounter = 1; // Pausing the scheduler is useful for debugging.
+var currentTask = null;
+var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy.
+
+var isPerformingWork = false;
+var isHostCallbackScheduled = false;
+var isHostTimeoutScheduled = false;
+
+function advanceTimers(currentTime) {
+  // Check for tasks that are no longer delayed and add them to the queue.
+  var timer = peek(timerQueue);
+
+  while (timer !== null) {
+    if (timer.callback === null) {
+      // Timer was cancelled.
+      pop(timerQueue);
+    } else if (timer.startTime <= currentTime) {
+      // Timer fired. Transfer to the task queue.
+      pop(timerQueue);
+      timer.sortIndex = timer.expirationTime;
+      push(taskQueue, timer);
+
+      {
+        markTaskStart(timer, currentTime);
+        timer.isQueued = true;
+      }
+    } else {
+      // Remaining timers are pending.
+      return;
+    }
+
+    timer = peek(timerQueue);
+  }
+}
+
+function handleTimeout(currentTime) {
+  isHostTimeoutScheduled = false;
+  advanceTimers(currentTime);
+
+  if (!isHostCallbackScheduled) {
+    if (peek(taskQueue) !== null) {
+      isHostCallbackScheduled = true;
+      requestHostCallback(flushWork);
+    } else {
+      var firstTimer = peek(timerQueue);
+
+      if (firstTimer !== null) {
+        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+      }
+    }
+  }
+}
+
+function flushWork(hasTimeRemaining, initialTime) {
+  {
+    markSchedulerUnsuspended(initialTime);
+  } // We'll need a host callback the next time work is scheduled.
+
+
+  isHostCallbackScheduled = false;
+
+  if (isHostTimeoutScheduled) {
+    // We scheduled a timeout but it's no longer needed. Cancel it.
+    isHostTimeoutScheduled = false;
+    cancelHostTimeout();
+  }
+
+  isPerformingWork = true;
+  var previousPriorityLevel = currentPriorityLevel;
+
+  try {
+    if (enableProfiling) {
+      try {
+        return workLoop(hasTimeRemaining, initialTime);
+      } catch (error) {
+        if (currentTask !== null) {
+          var currentTime = exports.unstable_now();
+          markTaskErrored(currentTask, currentTime);
+          currentTask.isQueued = false;
+        }
+
+        throw error;
+      }
+    } else {
+      // No catch in prod codepath.
+      return workLoop(hasTimeRemaining, initialTime);
+    }
+  } finally {
+    currentTask = null;
+    currentPriorityLevel = previousPriorityLevel;
+    isPerformingWork = false;
+
+    {
+      var _currentTime = exports.unstable_now();
+
+      markSchedulerSuspended(_currentTime);
+    }
+  }
+}
+
+function workLoop(hasTimeRemaining, initialTime) {
+  var currentTime = initialTime;
+  advanceTimers(currentTime);
+  currentTask = peek(taskQueue);
+
+  while (currentTask !== null && !(enableSchedulerDebugging )) {
+    if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) {
+      // This currentTask hasn't expired, and we've reached the deadline.
+      break;
+    }
+
+    var callback = currentTask.callback;
+
+    if (callback !== null) {
+      currentTask.callback = null;
+      currentPriorityLevel = currentTask.priorityLevel;
+      var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
+      markTaskRun(currentTask, currentTime);
+      var continuationCallback = callback(didUserCallbackTimeout);
+      currentTime = exports.unstable_now();
+
+      if (typeof continuationCallback === 'function') {
+        currentTask.callback = continuationCallback;
+        markTaskYield(currentTask, currentTime);
+      } else {
+        {
+          markTaskCompleted(currentTask, currentTime);
+          currentTask.isQueued = false;
+        }
+
+        if (currentTask === peek(taskQueue)) {
+          pop(taskQueue);
+        }
+      }
+
+      advanceTimers(currentTime);
+    } else {
+      pop(taskQueue);
+    }
+
+    currentTask = peek(taskQueue);
+  } // Return whether there's additional work
+
+
+  if (currentTask !== null) {
+    return true;
+  } else {
+    var firstTimer = peek(timerQueue);
+
+    if (firstTimer !== null) {
+      requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+    }
+
+    return false;
+  }
+}
+
+function unstable_runWithPriority(priorityLevel, eventHandler) {
+  switch (priorityLevel) {
+    case ImmediatePriority:
+    case UserBlockingPriority:
+    case NormalPriority:
+    case LowPriority:
+    case IdlePriority:
+      break;
+
+    default:
+      priorityLevel = NormalPriority;
+  }
+
+  var previousPriorityLevel = currentPriorityLevel;
+  currentPriorityLevel = priorityLevel;
+
+  try {
+    return eventHandler();
+  } finally {
+    currentPriorityLevel = previousPriorityLevel;
+  }
+}
+
+function unstable_next(eventHandler) {
+  var priorityLevel;
+
+  switch (currentPriorityLevel) {
+    case ImmediatePriority:
+    case UserBlockingPriority:
+    case NormalPriority:
+      // Shift down to normal priority
+      priorityLevel = NormalPriority;
+      break;
+
+    default:
+      // Anything lower than normal priority should remain at the current level.
+      priorityLevel = currentPriorityLevel;
+      break;
+  }
+
+  var previousPriorityLevel = currentPriorityLevel;
+  currentPriorityLevel = priorityLevel;
+
+  try {
+    return eventHandler();
+  } finally {
+    currentPriorityLevel = previousPriorityLevel;
+  }
+}
+
+function unstable_wrapCallback(callback) {
+  var parentPriorityLevel = currentPriorityLevel;
+  return function () {
+    // This is a fork of runWithPriority, inlined for performance.
+    var previousPriorityLevel = currentPriorityLevel;
+    currentPriorityLevel = parentPriorityLevel;
+
+    try {
+      return callback.apply(this, arguments);
+    } finally {
+      currentPriorityLevel = previousPriorityLevel;
+    }
+  };
+}
+
+function timeoutForPriorityLevel(priorityLevel) {
+  switch (priorityLevel) {
+    case ImmediatePriority:
+      return IMMEDIATE_PRIORITY_TIMEOUT;
+
+    case UserBlockingPriority:
+      return USER_BLOCKING_PRIORITY;
+
+    case IdlePriority:
+      return IDLE_PRIORITY;
+
+    case LowPriority:
+      return LOW_PRIORITY_TIMEOUT;
+
+    case NormalPriority:
+    default:
+      return NORMAL_PRIORITY_TIMEOUT;
+  }
+}
+
+function unstable_scheduleCallback(priorityLevel, callback, options) {
+  var currentTime = exports.unstable_now();
+  var startTime;
+  var timeout;
+
+  if (typeof options === 'object' && options !== null) {
+    var delay = options.delay;
+
+    if (typeof delay === 'number' && delay > 0) {
+      startTime = currentTime + delay;
+    } else {
+      startTime = currentTime;
+    }
+
+    timeout = typeof options.timeout === 'number' ? options.timeout : timeoutForPriorityLevel(priorityLevel);
+  } else {
+    timeout = timeoutForPriorityLevel(priorityLevel);
+    startTime = currentTime;
+  }
+
+  var expirationTime = startTime + timeout;
+  var newTask = {
+    id: taskIdCounter++,
+    callback: callback,
+    priorityLevel: priorityLevel,
+    startTime: startTime,
+    expirationTime: expirationTime,
+    sortIndex: -1
+  };
+
+  {
+    newTask.isQueued = false;
+  }
+
+  if (startTime > currentTime) {
+    // This is a delayed task.
+    newTask.sortIndex = startTime;
+    push(timerQueue, newTask);
+
+    if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
+      // All tasks are delayed, and this is the task with the earliest delay.
+      if (isHostTimeoutScheduled) {
+        // Cancel an existing timeout.
+        cancelHostTimeout();
+      } else {
+        isHostTimeoutScheduled = true;
+      } // Schedule a timeout.
+
+
+      requestHostTimeout(handleTimeout, startTime - currentTime);
+    }
+  } else {
+    newTask.sortIndex = expirationTime;
+    push(taskQueue, newTask);
+
+    {
+      markTaskStart(newTask, currentTime);
+      newTask.isQueued = true;
+    } // Schedule a host callback, if needed. If we're already performing work,
+    // wait until the next time we yield.
+
+
+    if (!isHostCallbackScheduled && !isPerformingWork) {
+      isHostCallbackScheduled = true;
+      requestHostCallback(flushWork);
+    }
+  }
+
+  return newTask;
+}
+
+function unstable_pauseExecution() {
+}
+
+function unstable_continueExecution() {
+
+  if (!isHostCallbackScheduled && !isPerformingWork) {
+    isHostCallbackScheduled = true;
+    requestHostCallback(flushWork);
+  }
+}
+
+function unstable_getFirstCallbackNode() {
+  return peek(taskQueue);
+}
+
+function unstable_cancelCallback(task) {
+  {
+    if (task.isQueued) {
+      var currentTime = exports.unstable_now();
+      markTaskCanceled(task, currentTime);
+      task.isQueued = false;
+    }
+  } // Null out the callback to indicate the task has been canceled. (Can't
+  // remove from the queue because you can't remove arbitrary nodes from an
+  // array based heap, only the first one.)
+
+
+  task.callback = null;
+}
+
+function unstable_getCurrentPriorityLevel() {
+  return currentPriorityLevel;
+}
+
+function unstable_shouldYield() {
+  var currentTime = exports.unstable_now();
+  advanceTimers(currentTime);
+  var firstTask = peek(taskQueue);
+  return firstTask !== currentTask && currentTask !== null && firstTask !== null && firstTask.callback !== null && firstTask.startTime <= currentTime && firstTask.expirationTime < currentTask.expirationTime || shouldYieldToHost();
+}
+
+var unstable_requestPaint = requestPaint;
+var unstable_Profiling =  {
+  startLoggingProfilingEvents: startLoggingProfilingEvents,
+  stopLoggingProfilingEvents: stopLoggingProfilingEvents,
+  sharedProfilingBuffer: sharedProfilingBuffer
+} ;
+
+exports.unstable_IdlePriority = IdlePriority;
+exports.unstable_ImmediatePriority = ImmediatePriority;
+exports.unstable_LowPriority = LowPriority;
+exports.unstable_NormalPriority = NormalPriority;
+exports.unstable_Profiling = unstable_Profiling;
+exports.unstable_UserBlockingPriority = UserBlockingPriority;
+exports.unstable_cancelCallback = unstable_cancelCallback;
+exports.unstable_continueExecution = unstable_continueExecution;
+exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
+exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
+exports.unstable_next = unstable_next;
+exports.unstable_pauseExecution = unstable_pauseExecution;
+exports.unstable_requestPaint = unstable_requestPaint;
+exports.unstable_runWithPriority = unstable_runWithPriority;
+exports.unstable_scheduleCallback = unstable_scheduleCallback;
+exports.unstable_shouldYield = unstable_shouldYield;
+exports.unstable_wrapCallback = unstable_wrapCallback;
+  })();
+}
diff --git a/igv_component/node_modules/scheduler/cjs/scheduler.production.min.js b/igv_component/node_modules/scheduler/cjs/scheduler.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..1c116d85db3d3f59419324dcf80d47a6b4c15432
--- /dev/null
+++ b/igv_component/node_modules/scheduler/cjs/scheduler.production.min.js
@@ -0,0 +1,21 @@
+/** @license React v0.19.1
+ * scheduler.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';var f,g,h,k,l;
+if("undefined"===typeof window||"function"!==typeof MessageChannel){var p=null,q=null,t=function(){if(null!==p)try{var a=exports.unstable_now();p(!0,a);p=null}catch(b){throw setTimeout(t,0),b;}},u=Date.now();exports.unstable_now=function(){return Date.now()-u};f=function(a){null!==p?setTimeout(f,0,a):(p=a,setTimeout(t,0))};g=function(a,b){q=setTimeout(a,b)};h=function(){clearTimeout(q)};k=function(){return!1};l=exports.unstable_forceFrameRate=function(){}}else{var w=window.performance,x=window.Date,
+y=window.setTimeout,z=window.clearTimeout;if("undefined"!==typeof console){var A=window.cancelAnimationFrame;"function"!==typeof window.requestAnimationFrame&&console.error("This browser doesn't support requestAnimationFrame. Make sure that you load a polyfill in older browsers. https://fb.me/react-polyfills");"function"!==typeof A&&console.error("This browser doesn't support cancelAnimationFrame. Make sure that you load a polyfill in older browsers. https://fb.me/react-polyfills")}if("object"===
+typeof w&&"function"===typeof w.now)exports.unstable_now=function(){return w.now()};else{var B=x.now();exports.unstable_now=function(){return x.now()-B}}var C=!1,D=null,E=-1,F=5,G=0;k=function(){return exports.unstable_now()>=G};l=function(){};exports.unstable_forceFrameRate=function(a){0>a||125<a?console.error("forceFrameRate takes a positive int between 0 and 125, forcing framerates higher than 125 fps is not unsupported"):F=0<a?Math.floor(1E3/a):5};var H=new MessageChannel,I=H.port2;H.port1.onmessage=
+function(){if(null!==D){var a=exports.unstable_now();G=a+F;try{D(!0,a)?I.postMessage(null):(C=!1,D=null)}catch(b){throw I.postMessage(null),b;}}else C=!1};f=function(a){D=a;C||(C=!0,I.postMessage(null))};g=function(a,b){E=y(function(){a(exports.unstable_now())},b)};h=function(){z(E);E=-1}}function J(a,b){var c=a.length;a.push(b);a:for(;;){var d=c-1>>>1,e=a[d];if(void 0!==e&&0<K(e,b))a[d]=b,a[c]=e,c=d;else break a}}function L(a){a=a[0];return void 0===a?null:a}
+function M(a){var b=a[0];if(void 0!==b){var c=a.pop();if(c!==b){a[0]=c;a:for(var d=0,e=a.length;d<e;){var m=2*(d+1)-1,n=a[m],v=m+1,r=a[v];if(void 0!==n&&0>K(n,c))void 0!==r&&0>K(r,n)?(a[d]=r,a[v]=c,d=v):(a[d]=n,a[m]=c,d=m);else if(void 0!==r&&0>K(r,c))a[d]=r,a[v]=c,d=v;else break a}}return b}return null}function K(a,b){var c=a.sortIndex-b.sortIndex;return 0!==c?c:a.id-b.id}var N=[],O=[],P=1,Q=null,R=3,S=!1,T=!1,U=!1;
+function V(a){for(var b=L(O);null!==b;){if(null===b.callback)M(O);else if(b.startTime<=a)M(O),b.sortIndex=b.expirationTime,J(N,b);else break;b=L(O)}}function W(a){U=!1;V(a);if(!T)if(null!==L(N))T=!0,f(X);else{var b=L(O);null!==b&&g(W,b.startTime-a)}}
+function X(a,b){T=!1;U&&(U=!1,h());S=!0;var c=R;try{V(b);for(Q=L(N);null!==Q&&(!(Q.expirationTime>b)||a&&!k());){var d=Q.callback;if(null!==d){Q.callback=null;R=Q.priorityLevel;var e=d(Q.expirationTime<=b);b=exports.unstable_now();"function"===typeof e?Q.callback=e:Q===L(N)&&M(N);V(b)}else M(N);Q=L(N)}if(null!==Q)var m=!0;else{var n=L(O);null!==n&&g(W,n.startTime-b);m=!1}return m}finally{Q=null,R=c,S=!1}}
+function Y(a){switch(a){case 1:return-1;case 2:return 250;case 5:return 1073741823;case 4:return 1E4;default:return 5E3}}var Z=l;exports.unstable_IdlePriority=5;exports.unstable_ImmediatePriority=1;exports.unstable_LowPriority=4;exports.unstable_NormalPriority=3;exports.unstable_Profiling=null;exports.unstable_UserBlockingPriority=2;exports.unstable_cancelCallback=function(a){a.callback=null};exports.unstable_continueExecution=function(){T||S||(T=!0,f(X))};
+exports.unstable_getCurrentPriorityLevel=function(){return R};exports.unstable_getFirstCallbackNode=function(){return L(N)};exports.unstable_next=function(a){switch(R){case 1:case 2:case 3:var b=3;break;default:b=R}var c=R;R=b;try{return a()}finally{R=c}};exports.unstable_pauseExecution=function(){};exports.unstable_requestPaint=Z;exports.unstable_runWithPriority=function(a,b){switch(a){case 1:case 2:case 3:case 4:case 5:break;default:a=3}var c=R;R=a;try{return b()}finally{R=c}};
+exports.unstable_scheduleCallback=function(a,b,c){var d=exports.unstable_now();if("object"===typeof c&&null!==c){var e=c.delay;e="number"===typeof e&&0<e?d+e:d;c="number"===typeof c.timeout?c.timeout:Y(a)}else c=Y(a),e=d;c=e+c;a={id:P++,callback:b,priorityLevel:a,startTime:e,expirationTime:c,sortIndex:-1};e>d?(a.sortIndex=e,J(O,a),null===L(N)&&a===L(O)&&(U?h():U=!0,g(W,e-d))):(a.sortIndex=c,J(N,a),T||S||(T=!0,f(X)));return a};
+exports.unstable_shouldYield=function(){var a=exports.unstable_now();V(a);var b=L(N);return b!==Q&&null!==Q&&null!==b&&null!==b.callback&&b.startTime<=a&&b.expirationTime<Q.expirationTime||k()};exports.unstable_wrapCallback=function(a){var b=R;return function(){var c=R;R=b;try{return a.apply(this,arguments)}finally{R=c}}};
diff --git a/igv_component/node_modules/scheduler/index.js b/igv_component/node_modules/scheduler/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..77770b0c219e236cb5a306e441672f5573e909e3
--- /dev/null
+++ b/igv_component/node_modules/scheduler/index.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/scheduler.production.min.js');
+} else {
+  module.exports = require('./cjs/scheduler.development.js');
+}
diff --git a/igv_component/node_modules/scheduler/package.json b/igv_component/node_modules/scheduler/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..d016d73c87e932a52c724b05aabaedaecf9c8a02
--- /dev/null
+++ b/igv_component/node_modules/scheduler/package.json
@@ -0,0 +1,39 @@
+{
+  "name": "scheduler",
+  "version": "0.19.1",
+  "description": "Cooperative scheduler for the browser environment.",
+  "main": "index.js",
+  "repository": {
+    "type": "git",
+    "url": "https://github.com/facebook/react.git",
+    "directory": "packages/scheduler"
+  },
+  "license": "MIT",
+  "keywords": [
+    "react"
+  ],
+  "bugs": {
+    "url": "https://github.com/facebook/react/issues"
+  },
+  "homepage": "https://reactjs.org/",
+  "dependencies": {
+    "loose-envify": "^1.1.0",
+    "object-assign": "^4.1.1"
+  },
+  "files": [
+    "LICENSE",
+    "README.md",
+    "build-info.json",
+    "index.js",
+    "tracing.js",
+    "tracing-profiling.js",
+    "unstable_mock.js",
+    "cjs/",
+    "umd/"
+  ],
+  "browserify": {
+    "transform": [
+      "loose-envify"
+    ]
+  }
+}
diff --git a/igv_component/node_modules/scheduler/tracing-profiling.js b/igv_component/node_modules/scheduler/tracing-profiling.js
new file mode 100644
index 0000000000000000000000000000000000000000..cb2d20c02522637b6f643e6c59826314a7dba78e
--- /dev/null
+++ b/igv_component/node_modules/scheduler/tracing-profiling.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/scheduler-tracing.profiling.min.js');
+} else {
+  module.exports = require('./cjs/scheduler-tracing.development.js');
+}
diff --git a/igv_component/node_modules/scheduler/tracing.js b/igv_component/node_modules/scheduler/tracing.js
new file mode 100644
index 0000000000000000000000000000000000000000..1e318bd901b5d75d9a730293266f61d0de7d1bda
--- /dev/null
+++ b/igv_component/node_modules/scheduler/tracing.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/scheduler-tracing.production.min.js');
+} else {
+  module.exports = require('./cjs/scheduler-tracing.development.js');
+}
diff --git a/igv_component/node_modules/scheduler/umd/scheduler-tracing.development.js b/igv_component/node_modules/scheduler/umd/scheduler-tracing.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..a81bf8fe2f98d1dd98a09e1214eb80fa638a60f3
--- /dev/null
+++ b/igv_component/node_modules/scheduler/umd/scheduler-tracing.development.js
@@ -0,0 +1,80 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.SchedulerTracing = factory(global));
+})(this, function(global) {
+  function unstable_clear() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_clear.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrent() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getCurrent.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getThreadID() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getThreadID.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_subscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_subscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_trace() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_trace.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_unsubscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_unsubscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrap() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_wrap.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_clear: unstable_clear,
+    unstable_getCurrent: unstable_getCurrent,
+    unstable_getThreadID: unstable_getThreadID,
+    unstable_subscribe: unstable_subscribe,
+    unstable_trace: unstable_trace,
+    unstable_unsubscribe: unstable_unsubscribe,
+    unstable_wrap: unstable_wrap,
+  });
+});
diff --git a/igv_component/node_modules/scheduler/umd/scheduler-tracing.production.min.js b/igv_component/node_modules/scheduler/umd/scheduler-tracing.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..a81bf8fe2f98d1dd98a09e1214eb80fa638a60f3
--- /dev/null
+++ b/igv_component/node_modules/scheduler/umd/scheduler-tracing.production.min.js
@@ -0,0 +1,80 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.SchedulerTracing = factory(global));
+})(this, function(global) {
+  function unstable_clear() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_clear.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrent() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getCurrent.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getThreadID() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getThreadID.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_subscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_subscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_trace() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_trace.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_unsubscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_unsubscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrap() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_wrap.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_clear: unstable_clear,
+    unstable_getCurrent: unstable_getCurrent,
+    unstable_getThreadID: unstable_getThreadID,
+    unstable_subscribe: unstable_subscribe,
+    unstable_trace: unstable_trace,
+    unstable_unsubscribe: unstable_unsubscribe,
+    unstable_wrap: unstable_wrap,
+  });
+});
diff --git a/igv_component/node_modules/scheduler/umd/scheduler-tracing.profiling.min.js b/igv_component/node_modules/scheduler/umd/scheduler-tracing.profiling.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..a81bf8fe2f98d1dd98a09e1214eb80fa638a60f3
--- /dev/null
+++ b/igv_component/node_modules/scheduler/umd/scheduler-tracing.profiling.min.js
@@ -0,0 +1,80 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.SchedulerTracing = factory(global));
+})(this, function(global) {
+  function unstable_clear() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_clear.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrent() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getCurrent.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getThreadID() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_getThreadID.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_subscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_subscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_trace() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_trace.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_unsubscribe() {
+    // eslint-disable-next-line max-len
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_unsubscribe.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrap() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.SchedulerTracing.unstable_wrap.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_clear: unstable_clear,
+    unstable_getCurrent: unstable_getCurrent,
+    unstable_getThreadID: unstable_getThreadID,
+    unstable_subscribe: unstable_subscribe,
+    unstable_trace: unstable_trace,
+    unstable_unsubscribe: unstable_unsubscribe,
+    unstable_wrap: unstable_wrap,
+  });
+});
diff --git a/igv_component/node_modules/scheduler/umd/scheduler-unstable_mock.development.js b/igv_component/node_modules/scheduler/umd/scheduler-unstable_mock.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..30a80f115cde06bad3da3b7f731ead803d79bb8f
--- /dev/null
+++ b/igv_component/node_modules/scheduler/umd/scheduler-unstable_mock.development.js
@@ -0,0 +1,857 @@
+/** @license React v0.19.1
+ * scheduler-unstable_mock.development.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+'use strict';
+
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+  (global = global || self, factory(global.SchedulerMock = {}));
+}(this, (function (exports) { 'use strict';
+
+  var enableSchedulerDebugging = false;
+  var enableProfiling = true;
+
+  var currentTime = 0;
+  var scheduledCallback = null;
+  var scheduledTimeout = null;
+  var timeoutTime = -1;
+  var yieldedValues = null;
+  var expectedNumberOfYields = -1;
+  var didStop = false;
+  var isFlushing = false;
+  var needsPaint = false;
+  var shouldYieldForPaint = false;
+  function requestHostCallback(callback) {
+    scheduledCallback = callback;
+  }
+  function requestHostTimeout(callback, ms) {
+    scheduledTimeout = callback;
+    timeoutTime = currentTime + ms;
+  }
+  function cancelHostTimeout() {
+    scheduledTimeout = null;
+    timeoutTime = -1;
+  }
+  function shouldYieldToHost() {
+    if (expectedNumberOfYields !== -1 && yieldedValues !== null && yieldedValues.length >= expectedNumberOfYields || shouldYieldForPaint && needsPaint) {
+      // We yielded at least as many values as expected. Stop flushing.
+      didStop = true;
+      return true;
+    }
+
+    return false;
+  }
+  function getCurrentTime() {
+    return currentTime;
+  }
+  function forceFrameRate() {// No-op
+  }
+
+  function unstable_flushNumberOfYields(count) {
+    if (isFlushing) {
+      throw new Error('Already flushing work.');
+    }
+
+    if (scheduledCallback !== null) {
+      var cb = scheduledCallback;
+      expectedNumberOfYields = count;
+      isFlushing = true;
+
+      try {
+        var hasMoreWork = true;
+
+        do {
+          hasMoreWork = cb(true, currentTime);
+        } while (hasMoreWork && !didStop);
+
+        if (!hasMoreWork) {
+          scheduledCallback = null;
+        }
+      } finally {
+        expectedNumberOfYields = -1;
+        didStop = false;
+        isFlushing = false;
+      }
+    }
+  }
+  function unstable_flushUntilNextPaint() {
+    if (isFlushing) {
+      throw new Error('Already flushing work.');
+    }
+
+    if (scheduledCallback !== null) {
+      var cb = scheduledCallback;
+      shouldYieldForPaint = true;
+      needsPaint = false;
+      isFlushing = true;
+
+      try {
+        var hasMoreWork = true;
+
+        do {
+          hasMoreWork = cb(true, currentTime);
+        } while (hasMoreWork && !didStop);
+
+        if (!hasMoreWork) {
+          scheduledCallback = null;
+        }
+      } finally {
+        shouldYieldForPaint = false;
+        didStop = false;
+        isFlushing = false;
+      }
+    }
+  }
+  function unstable_flushExpired() {
+    if (isFlushing) {
+      throw new Error('Already flushing work.');
+    }
+
+    if (scheduledCallback !== null) {
+      isFlushing = true;
+
+      try {
+        var hasMoreWork = scheduledCallback(false, currentTime);
+
+        if (!hasMoreWork) {
+          scheduledCallback = null;
+        }
+      } finally {
+        isFlushing = false;
+      }
+    }
+  }
+  function unstable_flushAllWithoutAsserting() {
+    // Returns false if no work was flushed.
+    if (isFlushing) {
+      throw new Error('Already flushing work.');
+    }
+
+    if (scheduledCallback !== null) {
+      var cb = scheduledCallback;
+      isFlushing = true;
+
+      try {
+        var hasMoreWork = true;
+
+        do {
+          hasMoreWork = cb(true, currentTime);
+        } while (hasMoreWork);
+
+        if (!hasMoreWork) {
+          scheduledCallback = null;
+        }
+
+        return true;
+      } finally {
+        isFlushing = false;
+      }
+    } else {
+      return false;
+    }
+  }
+  function unstable_clearYields() {
+    if (yieldedValues === null) {
+      return [];
+    }
+
+    var values = yieldedValues;
+    yieldedValues = null;
+    return values;
+  }
+  function unstable_flushAll() {
+    if (yieldedValues !== null) {
+      throw new Error('Log is not empty. Assert on the log of yielded values before ' + 'flushing additional work.');
+    }
+
+    unstable_flushAllWithoutAsserting();
+
+    if (yieldedValues !== null) {
+      throw new Error('While flushing work, something yielded a value. Use an ' + 'assertion helper to assert on the log of yielded values, e.g. ' + 'expect(Scheduler).toFlushAndYield([...])');
+    }
+  }
+  function unstable_yieldValue(value) {
+    if (yieldedValues === null) {
+      yieldedValues = [value];
+    } else {
+      yieldedValues.push(value);
+    }
+  }
+  function unstable_advanceTime(ms) {
+    currentTime += ms;
+
+    if (scheduledTimeout !== null && timeoutTime <= currentTime) {
+      scheduledTimeout(currentTime);
+      timeoutTime = -1;
+      scheduledTimeout = null;
+    }
+  }
+  function requestPaint() {
+    needsPaint = true;
+  }
+
+  function push(heap, node) {
+    var index = heap.length;
+    heap.push(node);
+    siftUp(heap, node, index);
+  }
+  function peek(heap) {
+    var first = heap[0];
+    return first === undefined ? null : first;
+  }
+  function pop(heap) {
+    var first = heap[0];
+
+    if (first !== undefined) {
+      var last = heap.pop();
+
+      if (last !== first) {
+        heap[0] = last;
+        siftDown(heap, last, 0);
+      }
+
+      return first;
+    } else {
+      return null;
+    }
+  }
+
+  function siftUp(heap, node, i) {
+    var index = i;
+
+    while (true) {
+      var parentIndex = index - 1 >>> 1;
+      var parent = heap[parentIndex];
+
+      if (parent !== undefined && compare(parent, node) > 0) {
+        // The parent is larger. Swap positions.
+        heap[parentIndex] = node;
+        heap[index] = parent;
+        index = parentIndex;
+      } else {
+        // The parent is smaller. Exit.
+        return;
+      }
+    }
+  }
+
+  function siftDown(heap, node, i) {
+    var index = i;
+    var length = heap.length;
+
+    while (index < length) {
+      var leftIndex = (index + 1) * 2 - 1;
+      var left = heap[leftIndex];
+      var rightIndex = leftIndex + 1;
+      var right = heap[rightIndex]; // If the left or right node is smaller, swap with the smaller of those.
+
+      if (left !== undefined && compare(left, node) < 0) {
+        if (right !== undefined && compare(right, left) < 0) {
+          heap[index] = right;
+          heap[rightIndex] = node;
+          index = rightIndex;
+        } else {
+          heap[index] = left;
+          heap[leftIndex] = node;
+          index = leftIndex;
+        }
+      } else if (right !== undefined && compare(right, node) < 0) {
+        heap[index] = right;
+        heap[rightIndex] = node;
+        index = rightIndex;
+      } else {
+        // Neither child is smaller. Exit.
+        return;
+      }
+    }
+  }
+
+  function compare(a, b) {
+    // Compare sort index first, then task id.
+    var diff = a.sortIndex - b.sortIndex;
+    return diff !== 0 ? diff : a.id - b.id;
+  }
+
+  // TODO: Use symbols?
+  var NoPriority = 0;
+  var ImmediatePriority = 1;
+  var UserBlockingPriority = 2;
+  var NormalPriority = 3;
+  var LowPriority = 4;
+  var IdlePriority = 5;
+
+  var runIdCounter = 0;
+  var mainThreadIdCounter = 0;
+  var profilingStateSize = 4;
+  var sharedProfilingBuffer =  // $FlowFixMe Flow doesn't know about SharedArrayBuffer
+  typeof SharedArrayBuffer === 'function' ? new SharedArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : // $FlowFixMe Flow doesn't know about ArrayBuffer
+  typeof ArrayBuffer === 'function' ? new ArrayBuffer(profilingStateSize * Int32Array.BYTES_PER_ELEMENT) : null // Don't crash the init path on IE9
+  ;
+  var profilingState =  sharedProfilingBuffer !== null ? new Int32Array(sharedProfilingBuffer) : []; // We can't read this but it helps save bytes for null checks
+
+  var PRIORITY = 0;
+  var CURRENT_TASK_ID = 1;
+  var CURRENT_RUN_ID = 2;
+  var QUEUE_SIZE = 3;
+
+  {
+    profilingState[PRIORITY] = NoPriority; // This is maintained with a counter, because the size of the priority queue
+    // array might include canceled tasks.
+
+    profilingState[QUEUE_SIZE] = 0;
+    profilingState[CURRENT_TASK_ID] = 0;
+  } // Bytes per element is 4
+
+
+  var INITIAL_EVENT_LOG_SIZE = 131072;
+  var MAX_EVENT_LOG_SIZE = 524288; // Equivalent to 2 megabytes
+
+  var eventLogSize = 0;
+  var eventLogBuffer = null;
+  var eventLog = null;
+  var eventLogIndex = 0;
+  var TaskStartEvent = 1;
+  var TaskCompleteEvent = 2;
+  var TaskErrorEvent = 3;
+  var TaskCancelEvent = 4;
+  var TaskRunEvent = 5;
+  var TaskYieldEvent = 6;
+  var SchedulerSuspendEvent = 7;
+  var SchedulerResumeEvent = 8;
+
+  function logEvent(entries) {
+    if (eventLog !== null) {
+      var offset = eventLogIndex;
+      eventLogIndex += entries.length;
+
+      if (eventLogIndex + 1 > eventLogSize) {
+        eventLogSize *= 2;
+
+        if (eventLogSize > MAX_EVENT_LOG_SIZE) {
+          // Using console['error'] to evade Babel and ESLint
+          console['error']("Scheduler Profiling: Event log exceeded maximum size. Don't " + 'forget to call `stopLoggingProfilingEvents()`.');
+          stopLoggingProfilingEvents();
+          return;
+        }
+
+        var newEventLog = new Int32Array(eventLogSize * 4);
+        newEventLog.set(eventLog);
+        eventLogBuffer = newEventLog.buffer;
+        eventLog = newEventLog;
+      }
+
+      eventLog.set(entries, offset);
+    }
+  }
+
+  function startLoggingProfilingEvents() {
+    eventLogSize = INITIAL_EVENT_LOG_SIZE;
+    eventLogBuffer = new ArrayBuffer(eventLogSize * 4);
+    eventLog = new Int32Array(eventLogBuffer);
+    eventLogIndex = 0;
+  }
+  function stopLoggingProfilingEvents() {
+    var buffer = eventLogBuffer;
+    eventLogSize = 0;
+    eventLogBuffer = null;
+    eventLog = null;
+    eventLogIndex = 0;
+    return buffer;
+  }
+  function markTaskStart(task, ms) {
+    {
+      profilingState[QUEUE_SIZE]++;
+
+      if (eventLog !== null) {
+        // performance.now returns a float, representing milliseconds. When the
+        // event is logged, it's coerced to an int. Convert to microseconds to
+        // maintain extra degrees of precision.
+        logEvent([TaskStartEvent, ms * 1000, task.id, task.priorityLevel]);
+      }
+    }
+  }
+  function markTaskCompleted(task, ms) {
+    {
+      profilingState[PRIORITY] = NoPriority;
+      profilingState[CURRENT_TASK_ID] = 0;
+      profilingState[QUEUE_SIZE]--;
+
+      if (eventLog !== null) {
+        logEvent([TaskCompleteEvent, ms * 1000, task.id]);
+      }
+    }
+  }
+  function markTaskCanceled(task, ms) {
+    {
+      profilingState[QUEUE_SIZE]--;
+
+      if (eventLog !== null) {
+        logEvent([TaskCancelEvent, ms * 1000, task.id]);
+      }
+    }
+  }
+  function markTaskErrored(task, ms) {
+    {
+      profilingState[PRIORITY] = NoPriority;
+      profilingState[CURRENT_TASK_ID] = 0;
+      profilingState[QUEUE_SIZE]--;
+
+      if (eventLog !== null) {
+        logEvent([TaskErrorEvent, ms * 1000, task.id]);
+      }
+    }
+  }
+  function markTaskRun(task, ms) {
+    {
+      runIdCounter++;
+      profilingState[PRIORITY] = task.priorityLevel;
+      profilingState[CURRENT_TASK_ID] = task.id;
+      profilingState[CURRENT_RUN_ID] = runIdCounter;
+
+      if (eventLog !== null) {
+        logEvent([TaskRunEvent, ms * 1000, task.id, runIdCounter]);
+      }
+    }
+  }
+  function markTaskYield(task, ms) {
+    {
+      profilingState[PRIORITY] = NoPriority;
+      profilingState[CURRENT_TASK_ID] = 0;
+      profilingState[CURRENT_RUN_ID] = 0;
+
+      if (eventLog !== null) {
+        logEvent([TaskYieldEvent, ms * 1000, task.id, runIdCounter]);
+      }
+    }
+  }
+  function markSchedulerSuspended(ms) {
+    {
+      mainThreadIdCounter++;
+
+      if (eventLog !== null) {
+        logEvent([SchedulerSuspendEvent, ms * 1000, mainThreadIdCounter]);
+      }
+    }
+  }
+  function markSchedulerUnsuspended(ms) {
+    {
+      if (eventLog !== null) {
+        logEvent([SchedulerResumeEvent, ms * 1000, mainThreadIdCounter]);
+      }
+    }
+  }
+
+  /* eslint-disable no-var */
+  // Math.pow(2, 30) - 1
+  // 0b111111111111111111111111111111
+
+  var maxSigned31BitInt = 1073741823; // Times out immediately
+
+  var IMMEDIATE_PRIORITY_TIMEOUT = -1; // Eventually times out
+
+  var USER_BLOCKING_PRIORITY = 250;
+  var NORMAL_PRIORITY_TIMEOUT = 5000;
+  var LOW_PRIORITY_TIMEOUT = 10000; // Never times out
+
+  var IDLE_PRIORITY = maxSigned31BitInt; // Tasks are stored on a min heap
+
+  var taskQueue = [];
+  var timerQueue = []; // Incrementing id counter. Used to maintain insertion order.
+
+  var taskIdCounter = 1; // Pausing the scheduler is useful for debugging.
+  var currentTask = null;
+  var currentPriorityLevel = NormalPriority; // This is set while performing work, to prevent re-entrancy.
+
+  var isPerformingWork = false;
+  var isHostCallbackScheduled = false;
+  var isHostTimeoutScheduled = false;
+
+  function advanceTimers(currentTime) {
+    // Check for tasks that are no longer delayed and add them to the queue.
+    var timer = peek(timerQueue);
+
+    while (timer !== null) {
+      if (timer.callback === null) {
+        // Timer was cancelled.
+        pop(timerQueue);
+      } else if (timer.startTime <= currentTime) {
+        // Timer fired. Transfer to the task queue.
+        pop(timerQueue);
+        timer.sortIndex = timer.expirationTime;
+        push(taskQueue, timer);
+
+        {
+          markTaskStart(timer, currentTime);
+          timer.isQueued = true;
+        }
+      } else {
+        // Remaining timers are pending.
+        return;
+      }
+
+      timer = peek(timerQueue);
+    }
+  }
+
+  function handleTimeout(currentTime) {
+    isHostTimeoutScheduled = false;
+    advanceTimers(currentTime);
+
+    if (!isHostCallbackScheduled) {
+      if (peek(taskQueue) !== null) {
+        isHostCallbackScheduled = true;
+        requestHostCallback(flushWork);
+      } else {
+        var firstTimer = peek(timerQueue);
+
+        if (firstTimer !== null) {
+          requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+        }
+      }
+    }
+  }
+
+  function flushWork(hasTimeRemaining, initialTime) {
+    {
+      markSchedulerUnsuspended(initialTime);
+    } // We'll need a host callback the next time work is scheduled.
+
+
+    isHostCallbackScheduled = false;
+
+    if (isHostTimeoutScheduled) {
+      // We scheduled a timeout but it's no longer needed. Cancel it.
+      isHostTimeoutScheduled = false;
+      cancelHostTimeout();
+    }
+
+    isPerformingWork = true;
+    var previousPriorityLevel = currentPriorityLevel;
+
+    try {
+      if (enableProfiling) {
+        try {
+          return workLoop(hasTimeRemaining, initialTime);
+        } catch (error) {
+          if (currentTask !== null) {
+            var currentTime = getCurrentTime();
+            markTaskErrored(currentTask, currentTime);
+            currentTask.isQueued = false;
+          }
+
+          throw error;
+        }
+      } else {
+        // No catch in prod codepath.
+        return workLoop(hasTimeRemaining, initialTime);
+      }
+    } finally {
+      currentTask = null;
+      currentPriorityLevel = previousPriorityLevel;
+      isPerformingWork = false;
+
+      {
+        var _currentTime = getCurrentTime();
+
+        markSchedulerSuspended(_currentTime);
+      }
+    }
+  }
+
+  function workLoop(hasTimeRemaining, initialTime) {
+    var currentTime = initialTime;
+    advanceTimers(currentTime);
+    currentTask = peek(taskQueue);
+
+    while (currentTask !== null && !(enableSchedulerDebugging )) {
+      if (currentTask.expirationTime > currentTime && (!hasTimeRemaining || shouldYieldToHost())) {
+        // This currentTask hasn't expired, and we've reached the deadline.
+        break;
+      }
+
+      var callback = currentTask.callback;
+
+      if (callback !== null) {
+        currentTask.callback = null;
+        currentPriorityLevel = currentTask.priorityLevel;
+        var didUserCallbackTimeout = currentTask.expirationTime <= currentTime;
+        markTaskRun(currentTask, currentTime);
+        var continuationCallback = callback(didUserCallbackTimeout);
+        currentTime = getCurrentTime();
+
+        if (typeof continuationCallback === 'function') {
+          currentTask.callback = continuationCallback;
+          markTaskYield(currentTask, currentTime);
+        } else {
+          {
+            markTaskCompleted(currentTask, currentTime);
+            currentTask.isQueued = false;
+          }
+
+          if (currentTask === peek(taskQueue)) {
+            pop(taskQueue);
+          }
+        }
+
+        advanceTimers(currentTime);
+      } else {
+        pop(taskQueue);
+      }
+
+      currentTask = peek(taskQueue);
+    } // Return whether there's additional work
+
+
+    if (currentTask !== null) {
+      return true;
+    } else {
+      var firstTimer = peek(timerQueue);
+
+      if (firstTimer !== null) {
+        requestHostTimeout(handleTimeout, firstTimer.startTime - currentTime);
+      }
+
+      return false;
+    }
+  }
+
+  function unstable_runWithPriority(priorityLevel, eventHandler) {
+    switch (priorityLevel) {
+      case ImmediatePriority:
+      case UserBlockingPriority:
+      case NormalPriority:
+      case LowPriority:
+      case IdlePriority:
+        break;
+
+      default:
+        priorityLevel = NormalPriority;
+    }
+
+    var previousPriorityLevel = currentPriorityLevel;
+    currentPriorityLevel = priorityLevel;
+
+    try {
+      return eventHandler();
+    } finally {
+      currentPriorityLevel = previousPriorityLevel;
+    }
+  }
+
+  function unstable_next(eventHandler) {
+    var priorityLevel;
+
+    switch (currentPriorityLevel) {
+      case ImmediatePriority:
+      case UserBlockingPriority:
+      case NormalPriority:
+        // Shift down to normal priority
+        priorityLevel = NormalPriority;
+        break;
+
+      default:
+        // Anything lower than normal priority should remain at the current level.
+        priorityLevel = currentPriorityLevel;
+        break;
+    }
+
+    var previousPriorityLevel = currentPriorityLevel;
+    currentPriorityLevel = priorityLevel;
+
+    try {
+      return eventHandler();
+    } finally {
+      currentPriorityLevel = previousPriorityLevel;
+    }
+  }
+
+  function unstable_wrapCallback(callback) {
+    var parentPriorityLevel = currentPriorityLevel;
+    return function () {
+      // This is a fork of runWithPriority, inlined for performance.
+      var previousPriorityLevel = currentPriorityLevel;
+      currentPriorityLevel = parentPriorityLevel;
+
+      try {
+        return callback.apply(this, arguments);
+      } finally {
+        currentPriorityLevel = previousPriorityLevel;
+      }
+    };
+  }
+
+  function timeoutForPriorityLevel(priorityLevel) {
+    switch (priorityLevel) {
+      case ImmediatePriority:
+        return IMMEDIATE_PRIORITY_TIMEOUT;
+
+      case UserBlockingPriority:
+        return USER_BLOCKING_PRIORITY;
+
+      case IdlePriority:
+        return IDLE_PRIORITY;
+
+      case LowPriority:
+        return LOW_PRIORITY_TIMEOUT;
+
+      case NormalPriority:
+      default:
+        return NORMAL_PRIORITY_TIMEOUT;
+    }
+  }
+
+  function unstable_scheduleCallback(priorityLevel, callback, options) {
+    var currentTime = getCurrentTime();
+    var startTime;
+    var timeout;
+
+    if (typeof options === 'object' && options !== null) {
+      var delay = options.delay;
+
+      if (typeof delay === 'number' && delay > 0) {
+        startTime = currentTime + delay;
+      } else {
+        startTime = currentTime;
+      }
+
+      timeout = typeof options.timeout === 'number' ? options.timeout : timeoutForPriorityLevel(priorityLevel);
+    } else {
+      timeout = timeoutForPriorityLevel(priorityLevel);
+      startTime = currentTime;
+    }
+
+    var expirationTime = startTime + timeout;
+    var newTask = {
+      id: taskIdCounter++,
+      callback: callback,
+      priorityLevel: priorityLevel,
+      startTime: startTime,
+      expirationTime: expirationTime,
+      sortIndex: -1
+    };
+
+    {
+      newTask.isQueued = false;
+    }
+
+    if (startTime > currentTime) {
+      // This is a delayed task.
+      newTask.sortIndex = startTime;
+      push(timerQueue, newTask);
+
+      if (peek(taskQueue) === null && newTask === peek(timerQueue)) {
+        // All tasks are delayed, and this is the task with the earliest delay.
+        if (isHostTimeoutScheduled) {
+          // Cancel an existing timeout.
+          cancelHostTimeout();
+        } else {
+          isHostTimeoutScheduled = true;
+        } // Schedule a timeout.
+
+
+        requestHostTimeout(handleTimeout, startTime - currentTime);
+      }
+    } else {
+      newTask.sortIndex = expirationTime;
+      push(taskQueue, newTask);
+
+      {
+        markTaskStart(newTask, currentTime);
+        newTask.isQueued = true;
+      } // Schedule a host callback, if needed. If we're already performing work,
+      // wait until the next time we yield.
+
+
+      if (!isHostCallbackScheduled && !isPerformingWork) {
+        isHostCallbackScheduled = true;
+        requestHostCallback(flushWork);
+      }
+    }
+
+    return newTask;
+  }
+
+  function unstable_pauseExecution() {
+  }
+
+  function unstable_continueExecution() {
+
+    if (!isHostCallbackScheduled && !isPerformingWork) {
+      isHostCallbackScheduled = true;
+      requestHostCallback(flushWork);
+    }
+  }
+
+  function unstable_getFirstCallbackNode() {
+    return peek(taskQueue);
+  }
+
+  function unstable_cancelCallback(task) {
+    {
+      if (task.isQueued) {
+        var currentTime = getCurrentTime();
+        markTaskCanceled(task, currentTime);
+        task.isQueued = false;
+      }
+    } // Null out the callback to indicate the task has been canceled. (Can't
+    // remove from the queue because you can't remove arbitrary nodes from an
+    // array based heap, only the first one.)
+
+
+    task.callback = null;
+  }
+
+  function unstable_getCurrentPriorityLevel() {
+    return currentPriorityLevel;
+  }
+
+  function unstable_shouldYield() {
+    var currentTime = getCurrentTime();
+    advanceTimers(currentTime);
+    var firstTask = peek(taskQueue);
+    return firstTask !== currentTask && currentTask !== null && firstTask !== null && firstTask.callback !== null && firstTask.startTime <= currentTime && firstTask.expirationTime < currentTask.expirationTime || shouldYieldToHost();
+  }
+
+  var unstable_requestPaint = requestPaint;
+  var unstable_Profiling =  {
+    startLoggingProfilingEvents: startLoggingProfilingEvents,
+    stopLoggingProfilingEvents: stopLoggingProfilingEvents,
+    sharedProfilingBuffer: sharedProfilingBuffer
+  } ;
+
+  exports.unstable_IdlePriority = IdlePriority;
+  exports.unstable_ImmediatePriority = ImmediatePriority;
+  exports.unstable_LowPriority = LowPriority;
+  exports.unstable_NormalPriority = NormalPriority;
+  exports.unstable_Profiling = unstable_Profiling;
+  exports.unstable_UserBlockingPriority = UserBlockingPriority;
+  exports.unstable_advanceTime = unstable_advanceTime;
+  exports.unstable_cancelCallback = unstable_cancelCallback;
+  exports.unstable_clearYields = unstable_clearYields;
+  exports.unstable_continueExecution = unstable_continueExecution;
+  exports.unstable_flushAll = unstable_flushAll;
+  exports.unstable_flushAllWithoutAsserting = unstable_flushAllWithoutAsserting;
+  exports.unstable_flushExpired = unstable_flushExpired;
+  exports.unstable_flushNumberOfYields = unstable_flushNumberOfYields;
+  exports.unstable_flushUntilNextPaint = unstable_flushUntilNextPaint;
+  exports.unstable_forceFrameRate = forceFrameRate;
+  exports.unstable_getCurrentPriorityLevel = unstable_getCurrentPriorityLevel;
+  exports.unstable_getFirstCallbackNode = unstable_getFirstCallbackNode;
+  exports.unstable_next = unstable_next;
+  exports.unstable_now = getCurrentTime;
+  exports.unstable_pauseExecution = unstable_pauseExecution;
+  exports.unstable_requestPaint = unstable_requestPaint;
+  exports.unstable_runWithPriority = unstable_runWithPriority;
+  exports.unstable_scheduleCallback = unstable_scheduleCallback;
+  exports.unstable_shouldYield = unstable_shouldYield;
+  exports.unstable_wrapCallback = unstable_wrapCallback;
+  exports.unstable_yieldValue = unstable_yieldValue;
+
+})));
diff --git a/igv_component/node_modules/scheduler/umd/scheduler-unstable_mock.production.min.js b/igv_component/node_modules/scheduler/umd/scheduler-unstable_mock.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..db7a1283558cb7227c8bf3b9add679dbb4df396b
--- /dev/null
+++ b/igv_component/node_modules/scheduler/umd/scheduler-unstable_mock.production.min.js
@@ -0,0 +1,17 @@
+/** @license React v0.19.1
+ * scheduler-unstable_mock.production.min.js
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+'use strict';(function(b,w){"object"===typeof exports&&"undefined"!==typeof module?w(exports):"function"===typeof define&&define.amd?define(["exports"],w):(b=b||self,w(b.SchedulerMock={}))})(this,function(b){function w(){return-1!==y&&null!==k&&k.length>=y||D&&E?t=!0:!1}function J(){if(h)throw Error("Already flushing work.");if(null!==f){var a=f;h=!0;try{var c=!0;do c=a(!0,g);while(c);c||(f=null);return!0}finally{h=!1}}else return!1}function F(a,c){var G=a.length;a.push(c);a:for(;;){var b=G-1>>>1,
+p=a[b];if(void 0!==p&&0<z(p,c))a[b]=c,a[G]=p,G=b;else break a}}function l(a){a=a[0];return void 0===a?null:a}function A(a){var c=a[0];if(void 0!==c){var b=a.pop();if(b!==c){a[0]=b;a:for(var n=0,p=a.length;n<p;){var e=2*(n+1)-1,f=a[e],d=e+1,g=a[d];if(void 0!==f&&0>z(f,b))void 0!==g&&0>z(g,f)?(a[n]=g,a[d]=b,n=d):(a[n]=f,a[e]=b,n=e);else if(void 0!==g&&0>z(g,b))a[n]=g,a[d]=b,n=d;else break a}}return c}return null}function z(a,c){var b=a.sortIndex-c.sortIndex;return 0!==b?b:a.id-c.id}function B(a){for(var c=
+l(q);null!==c;){if(null===c.callback)A(q);else if(c.startTime<=a)A(q),c.sortIndex=c.expirationTime,F(m,c);else break;c=l(q)}}function H(a){x=!1;B(a);if(!u)if(null!==l(m))u=!0,f=I;else{var c=l(q);null!==c&&(a=c.startTime-a,r=H,v=g+a)}}function I(a,c){u=!1;x&&(x=!1,r=null,v=-1);C=!0;var b=e;try{B(c);for(d=l(m);null!==d&&(!(d.expirationTime>c)||a&&!w());){var f=d.callback;if(null!==f){d.callback=null;e=d.priorityLevel;var p=f(d.expirationTime<=c);c=g;"function"===typeof p?d.callback=p:d===l(m)&&A(m);
+B(c)}else A(m);d=l(m)}if(null!==d)var h=!0;else{var k=l(q);if(null!==k){var t=k.startTime-c;r=H;v=g+t}h=!1}return h}finally{d=null,e=b,C=!1}}function K(a){switch(a){case 1:return-1;case 2:return 250;case 5:return 1073741823;case 4:return 1E4;default:return 5E3}}var g=0,f=null,r=null,v=-1,k=null,y=-1,t=!1,h=!1,E=!1,D=!1,m=[],q=[],L=1,d=null,e=3,C=!1,u=!1,x=!1;b.unstable_IdlePriority=5;b.unstable_ImmediatePriority=1;b.unstable_LowPriority=4;b.unstable_NormalPriority=3;b.unstable_Profiling=null;b.unstable_UserBlockingPriority=
+2;b.unstable_advanceTime=function(a){g+=a;null!==r&&v<=g&&(r(g),v=-1,r=null)};b.unstable_cancelCallback=function(a){a.callback=null};b.unstable_clearYields=function(){if(null===k)return[];var a=k;k=null;return a};b.unstable_continueExecution=function(){u||C||(u=!0,f=I)};b.unstable_flushAll=function(){if(null!==k)throw Error("Log is not empty. Assert on the log of yielded values before flushing additional work.");J();if(null!==k)throw Error("While flushing work, something yielded a value. Use an assertion helper to assert on the log of yielded values, e.g. expect(Scheduler).toFlushAndYield([...])");
+};b.unstable_flushAllWithoutAsserting=J;b.unstable_flushExpired=function(){if(h)throw Error("Already flushing work.");if(null!==f){h=!0;try{f(!1,g)||(f=null)}finally{h=!1}}};b.unstable_flushNumberOfYields=function(a){if(h)throw Error("Already flushing work.");if(null!==f){var c=f;y=a;h=!0;try{a=!0;do a=c(!0,g);while(a&&!t);a||(f=null)}finally{y=-1,h=t=!1}}};b.unstable_flushUntilNextPaint=function(){if(h)throw Error("Already flushing work.");if(null!==f){var a=f;D=!0;E=!1;h=!0;try{var c=!0;do c=a(!0,
+g);while(c&&!t);c||(f=null)}finally{h=t=D=!1}}};b.unstable_forceFrameRate=function(){};b.unstable_getCurrentPriorityLevel=function(){return e};b.unstable_getFirstCallbackNode=function(){return l(m)};b.unstable_next=function(a){switch(e){case 1:case 2:case 3:var c=3;break;default:c=e}var b=e;e=c;try{return a()}finally{e=b}};b.unstable_now=function(){return g};b.unstable_pauseExecution=function(){};b.unstable_requestPaint=function(){E=!0};b.unstable_runWithPriority=function(a,c){switch(a){case 1:case 2:case 3:case 4:case 5:break;
+default:a=3}var b=e;e=a;try{return c()}finally{e=b}};b.unstable_scheduleCallback=function(a,c,b){var e=g;if("object"===typeof b&&null!==b){var d=b.delay;d="number"===typeof d&&0<d?e+d:e;b="number"===typeof b.timeout?b.timeout:K(a)}else b=K(a),d=e;b=d+b;a={id:L++,callback:c,priorityLevel:a,startTime:d,expirationTime:b,sortIndex:-1};d>e?(a.sortIndex=d,F(q,a),null===l(m)&&a===l(q)&&(x?(r=null,v=-1):x=!0,r=H,v=g+(d-e))):(a.sortIndex=b,F(m,a),u||C||(u=!0,f=I));return a};b.unstable_shouldYield=function(){var a=
+g;B(a);var b=l(m);return b!==d&&null!==d&&null!==b&&null!==b.callback&&b.startTime<=a&&b.expirationTime<d.expirationTime||w()};b.unstable_wrapCallback=function(a){var b=e;return function(){var c=e;e=b;try{return a.apply(this,arguments)}finally{e=c}}};b.unstable_yieldValue=function(a){null===k?k=[a]:k.push(a)}});
diff --git a/igv_component/node_modules/scheduler/umd/scheduler.development.js b/igv_component/node_modules/scheduler/umd/scheduler.development.js
new file mode 100644
index 0000000000000000000000000000000000000000..b960dc91132e73fb31bff288ce5bbdf870bab29d
--- /dev/null
+++ b/igv_component/node_modules/scheduler/umd/scheduler.development.js
@@ -0,0 +1,152 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/* eslint-disable max-len */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.Scheduler = factory(global));
+})(this, function(global) {
+  function unstable_now() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_now.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_scheduleCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_scheduleCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_cancelCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_cancelCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_shouldYield() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_shouldYield.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_requestPaint() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_requestPaint.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_runWithPriority() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_runWithPriority.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_next() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_next.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrapCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_wrapCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrentPriorityLevel() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getCurrentPriorityLevel.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getFirstCallbackNode() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getFirstCallbackNode.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_pauseExecution() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_pauseExecution.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_continueExecution() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_continueExecution.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_forceFrameRate() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_forceFrameRate.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_now: unstable_now,
+    unstable_scheduleCallback: unstable_scheduleCallback,
+    unstable_cancelCallback: unstable_cancelCallback,
+    unstable_shouldYield: unstable_shouldYield,
+    unstable_requestPaint: unstable_requestPaint,
+    unstable_runWithPriority: unstable_runWithPriority,
+    unstable_next: unstable_next,
+    unstable_wrapCallback: unstable_wrapCallback,
+    unstable_getCurrentPriorityLevel: unstable_getCurrentPriorityLevel,
+    unstable_continueExecution: unstable_continueExecution,
+    unstable_pauseExecution: unstable_pauseExecution,
+    unstable_getFirstCallbackNode: unstable_getFirstCallbackNode,
+    unstable_forceFrameRate: unstable_forceFrameRate,
+    get unstable_IdlePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_IdlePriority;
+    },
+    get unstable_ImmediatePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_ImmediatePriority;
+    },
+    get unstable_LowPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_LowPriority;
+    },
+    get unstable_NormalPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_NormalPriority;
+    },
+    get unstable_UserBlockingPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_UserBlockingPriority;
+    },
+    get unstable_Profiling() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_Profiling;
+    },
+  });
+});
diff --git a/igv_component/node_modules/scheduler/umd/scheduler.production.min.js b/igv_component/node_modules/scheduler/umd/scheduler.production.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..0c2584331b8471d17fd5acea3d0747dcdea556d5
--- /dev/null
+++ b/igv_component/node_modules/scheduler/umd/scheduler.production.min.js
@@ -0,0 +1,146 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/* eslint-disable max-len */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.Scheduler = factory(global));
+})(this, function(global) {
+  function unstable_now() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_now.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_scheduleCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_scheduleCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_cancelCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_cancelCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_shouldYield() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_shouldYield.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_requestPaint() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_requestPaint.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_runWithPriority() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_runWithPriority.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_next() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_next.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrapCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_wrapCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrentPriorityLevel() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getCurrentPriorityLevel.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getFirstCallbackNode() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getFirstCallbackNode.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_pauseExecution() {
+    return undefined;
+  }
+
+  function unstable_continueExecution() {
+    return undefined;
+  }
+
+  function unstable_forceFrameRate() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_forceFrameRate.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_now: unstable_now,
+    unstable_scheduleCallback: unstable_scheduleCallback,
+    unstable_cancelCallback: unstable_cancelCallback,
+    unstable_shouldYield: unstable_shouldYield,
+    unstable_requestPaint: unstable_requestPaint,
+    unstable_runWithPriority: unstable_runWithPriority,
+    unstable_next: unstable_next,
+    unstable_wrapCallback: unstable_wrapCallback,
+    unstable_getCurrentPriorityLevel: unstable_getCurrentPriorityLevel,
+    unstable_continueExecution: unstable_continueExecution,
+    unstable_pauseExecution: unstable_pauseExecution,
+    unstable_getFirstCallbackNode: unstable_getFirstCallbackNode,
+    unstable_forceFrameRate: unstable_forceFrameRate,
+    get unstable_IdlePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_IdlePriority;
+    },
+    get unstable_ImmediatePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_ImmediatePriority;
+    },
+    get unstable_LowPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_LowPriority;
+    },
+    get unstable_NormalPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_NormalPriority;
+    },
+    get unstable_UserBlockingPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_UserBlockingPriority;
+    },
+    get unstable_Profiling() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_Profiling;
+    },
+  });
+});
diff --git a/igv_component/node_modules/scheduler/umd/scheduler.profiling.min.js b/igv_component/node_modules/scheduler/umd/scheduler.profiling.min.js
new file mode 100644
index 0000000000000000000000000000000000000000..0c2584331b8471d17fd5acea3d0747dcdea556d5
--- /dev/null
+++ b/igv_component/node_modules/scheduler/umd/scheduler.profiling.min.js
@@ -0,0 +1,146 @@
+/**
+ * @license React
+ *
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ */
+
+/* eslint-disable max-len */
+
+'use strict';
+
+(function(global, factory) {
+  // eslint-disable-next-line no-unused-expressions
+  typeof exports === 'object' && typeof module !== 'undefined'
+    ? (module.exports = factory(require('react')))
+    : typeof define === 'function' && define.amd // eslint-disable-line no-undef
+    ? define(['react'], factory) // eslint-disable-line no-undef
+    : (global.Scheduler = factory(global));
+})(this, function(global) {
+  function unstable_now() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_now.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_scheduleCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_scheduleCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_cancelCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_cancelCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_shouldYield() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_shouldYield.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_requestPaint() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_requestPaint.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_runWithPriority() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_runWithPriority.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_next() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_next.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_wrapCallback() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_wrapCallback.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getCurrentPriorityLevel() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getCurrentPriorityLevel.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_getFirstCallbackNode() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_getFirstCallbackNode.apply(
+      this,
+      arguments
+    );
+  }
+
+  function unstable_pauseExecution() {
+    return undefined;
+  }
+
+  function unstable_continueExecution() {
+    return undefined;
+  }
+
+  function unstable_forceFrameRate() {
+    return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED.Scheduler.unstable_forceFrameRate.apply(
+      this,
+      arguments
+    );
+  }
+
+  return Object.freeze({
+    unstable_now: unstable_now,
+    unstable_scheduleCallback: unstable_scheduleCallback,
+    unstable_cancelCallback: unstable_cancelCallback,
+    unstable_shouldYield: unstable_shouldYield,
+    unstable_requestPaint: unstable_requestPaint,
+    unstable_runWithPriority: unstable_runWithPriority,
+    unstable_next: unstable_next,
+    unstable_wrapCallback: unstable_wrapCallback,
+    unstable_getCurrentPriorityLevel: unstable_getCurrentPriorityLevel,
+    unstable_continueExecution: unstable_continueExecution,
+    unstable_pauseExecution: unstable_pauseExecution,
+    unstable_getFirstCallbackNode: unstable_getFirstCallbackNode,
+    unstable_forceFrameRate: unstable_forceFrameRate,
+    get unstable_IdlePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_IdlePriority;
+    },
+    get unstable_ImmediatePriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_ImmediatePriority;
+    },
+    get unstable_LowPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_LowPriority;
+    },
+    get unstable_NormalPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_NormalPriority;
+    },
+    get unstable_UserBlockingPriority() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_UserBlockingPriority;
+    },
+    get unstable_Profiling() {
+      return global.React.__SECRET_INTERNALS_DO_NOT_USE_OR_YOU_WILL_BE_FIRED
+        .Scheduler.unstable_Profiling;
+    },
+  });
+});
diff --git a/igv_component/node_modules/scheduler/unstable_mock.js b/igv_component/node_modules/scheduler/unstable_mock.js
new file mode 100644
index 0000000000000000000000000000000000000000..e72ea3186f005763ec26d0f2e4bbfc62dd976a7e
--- /dev/null
+++ b/igv_component/node_modules/scheduler/unstable_mock.js
@@ -0,0 +1,7 @@
+'use strict';
+
+if (process.env.NODE_ENV === 'production') {
+  module.exports = require('./cjs/scheduler-unstable_mock.production.min.js');
+} else {
+  module.exports = require('./cjs/scheduler-unstable_mock.development.js');
+}
diff --git a/igv_component/node_modules/streamlit-component-lib/README.md b/igv_component/node_modules/streamlit-component-lib/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..35ef49a6603470eca22c7263397c59e9cbe9f5d7
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/README.md
@@ -0,0 +1,5 @@
+# Streamlit Component Library
+
+An npm package that provides support code for creating [Streamlit Components](https://docs.streamlit.io/library/components).
+
+The fastest way to start writing a Streamlit Component is to use our [Component Template repo](https://github.com/streamlit/component-template), which contains templates and example code.
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/ArrowTable.d.ts b/igv_component/node_modules/streamlit-component-lib/dist/ArrowTable.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..e8930a98a356e0c33673f3615193d2272da9ed69
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/ArrowTable.d.ts
@@ -0,0 +1,72 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { Table, Vector, StructRow } from "apache-arrow";
+export type CellType = "blank" | "index" | "columns" | "data";
+/** Data types used by ArrowJS. */
+export type DataType = null | boolean | number | string | Date | Int32Array | Uint8Array | Vector | StructRow;
+export interface ArrowDataframeProto {
+    data: ArrowTableProto;
+    height: string;
+    width: string;
+}
+export interface ArrowTableProto {
+    data: Uint8Array;
+    index: Uint8Array;
+    columns: Uint8Array;
+    styler?: Styler;
+}
+export interface Cell {
+    classNames: string;
+    content: DataType;
+    id?: string;
+    type: CellType;
+}
+export interface Styler {
+    caption?: string;
+    displayValuesTable: Table;
+    styles?: string;
+    uuid: string;
+}
+export declare class ArrowTable {
+    private readonly dataTable;
+    private readonly indexTable;
+    private readonly columnsTable;
+    private readonly styler?;
+    constructor(dataBuffer: Uint8Array, indexBuffer: Uint8Array, columnsBuffer: Uint8Array, styler?: any);
+    get rows(): number;
+    get columns(): number;
+    get headerRows(): number;
+    get headerColumns(): number;
+    get dataRows(): number;
+    get dataColumns(): number;
+    get uuid(): string | undefined;
+    get caption(): string | undefined;
+    get styles(): string | undefined;
+    get table(): Table;
+    get index(): Table;
+    get columnTable(): Table;
+    getCell: (rowIndex: number, columnIndex: number) => Cell;
+    getContent: (table: Table, rowIndex: number, columnIndex: number) => DataType;
+    /**
+     * Serialize arrow table.
+     */
+    serialize(): ArrowTableProto;
+    /**
+     * Returns apache-arrow specific typeId of column.
+     */
+    private getColumnTypeId;
+    private nanosToDate;
+}
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/ArrowTable.js b/igv_component/node_modules/streamlit-component-lib/dist/ArrowTable.js
new file mode 100644
index 0000000000000000000000000000000000000000..f274640ea78cea15c511283abddc96c7c4650b50
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/ArrowTable.js
@@ -0,0 +1,213 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { tableToIPC, tableFromIPC, Type } from "apache-arrow";
+var ArrowTable = /** @class */ (function () {
+    function ArrowTable(dataBuffer, indexBuffer, columnsBuffer, styler) {
+        var _this = this;
+        this.getCell = function (rowIndex, columnIndex) {
+            var isBlankCell = rowIndex < _this.headerRows && columnIndex < _this.headerColumns;
+            var isIndexCell = rowIndex >= _this.headerRows && columnIndex < _this.headerColumns;
+            var isColumnsCell = rowIndex < _this.headerRows && columnIndex >= _this.headerColumns;
+            if (isBlankCell) {
+                var classNames = ["blank"];
+                if (columnIndex > 0) {
+                    classNames.push("level" + rowIndex);
+                }
+                return {
+                    type: "blank",
+                    classNames: classNames.join(" "),
+                    content: ""
+                };
+            }
+            else if (isColumnsCell) {
+                var dataColumnIndex = columnIndex - _this.headerColumns;
+                var classNames = [
+                    "col_heading",
+                    "level" + rowIndex,
+                    "col" + dataColumnIndex
+                ];
+                return {
+                    type: "columns",
+                    classNames: classNames.join(" "),
+                    content: _this.getContent(_this.columnsTable, dataColumnIndex, rowIndex)
+                };
+            }
+            else if (isIndexCell) {
+                var dataRowIndex = rowIndex - _this.headerRows;
+                var classNames = [
+                    "row_heading",
+                    "level" + columnIndex,
+                    "row" + dataRowIndex
+                ];
+                return {
+                    type: "index",
+                    id: "T_".concat(_this.uuid, "level").concat(columnIndex, "_row").concat(dataRowIndex),
+                    classNames: classNames.join(" "),
+                    content: _this.getContent(_this.indexTable, dataRowIndex, columnIndex)
+                };
+            }
+            else {
+                var dataRowIndex = rowIndex - _this.headerRows;
+                var dataColumnIndex = columnIndex - _this.headerColumns;
+                var classNames = [
+                    "data",
+                    "row" + dataRowIndex,
+                    "col" + dataColumnIndex
+                ];
+                var content = _this.styler
+                    ? _this.getContent(_this.styler.displayValuesTable, dataRowIndex, dataColumnIndex)
+                    : _this.getContent(_this.dataTable, dataRowIndex, dataColumnIndex);
+                return {
+                    type: "data",
+                    id: "T_".concat(_this.uuid, "row").concat(dataRowIndex, "_col").concat(dataColumnIndex),
+                    classNames: classNames.join(" "),
+                    content: content
+                };
+            }
+        };
+        this.getContent = function (table, rowIndex, columnIndex) {
+            var column = table.getChildAt(columnIndex);
+            if (column === null) {
+                return "";
+            }
+            var columnTypeId = _this.getColumnTypeId(table, columnIndex);
+            switch (columnTypeId) {
+                case Type.Timestamp: {
+                    return _this.nanosToDate(column.get(rowIndex));
+                }
+                default: {
+                    return column.get(rowIndex);
+                }
+            }
+        };
+        this.dataTable = tableFromIPC(dataBuffer);
+        this.indexTable = tableFromIPC(indexBuffer);
+        this.columnsTable = tableFromIPC(columnsBuffer);
+        this.styler = styler
+            ? {
+                caption: styler.caption,
+                displayValuesTable: tableFromIPC(styler.displayValues),
+                styles: styler.styles,
+                uuid: styler.uuid
+            }
+            : undefined;
+    }
+    Object.defineProperty(ArrowTable.prototype, "rows", {
+        get: function () {
+            return this.indexTable.numRows + this.columnsTable.numCols;
+        },
+        enumerable: false,
+        configurable: true
+    });
+    Object.defineProperty(ArrowTable.prototype, "columns", {
+        get: function () {
+            return this.indexTable.numCols + this.columnsTable.numRows;
+        },
+        enumerable: false,
+        configurable: true
+    });
+    Object.defineProperty(ArrowTable.prototype, "headerRows", {
+        get: function () {
+            return this.rows - this.dataRows;
+        },
+        enumerable: false,
+        configurable: true
+    });
+    Object.defineProperty(ArrowTable.prototype, "headerColumns", {
+        get: function () {
+            return this.columns - this.dataColumns;
+        },
+        enumerable: false,
+        configurable: true
+    });
+    Object.defineProperty(ArrowTable.prototype, "dataRows", {
+        get: function () {
+            return this.dataTable.numRows;
+        },
+        enumerable: false,
+        configurable: true
+    });
+    Object.defineProperty(ArrowTable.prototype, "dataColumns", {
+        get: function () {
+            return this.dataTable.numCols;
+        },
+        enumerable: false,
+        configurable: true
+    });
+    Object.defineProperty(ArrowTable.prototype, "uuid", {
+        get: function () {
+            return this.styler && this.styler.uuid;
+        },
+        enumerable: false,
+        configurable: true
+    });
+    Object.defineProperty(ArrowTable.prototype, "caption", {
+        get: function () {
+            return this.styler && this.styler.caption;
+        },
+        enumerable: false,
+        configurable: true
+    });
+    Object.defineProperty(ArrowTable.prototype, "styles", {
+        get: function () {
+            return this.styler && this.styler.styles;
+        },
+        enumerable: false,
+        configurable: true
+    });
+    Object.defineProperty(ArrowTable.prototype, "table", {
+        get: function () {
+            return this.dataTable;
+        },
+        enumerable: false,
+        configurable: true
+    });
+    Object.defineProperty(ArrowTable.prototype, "index", {
+        get: function () {
+            return this.indexTable;
+        },
+        enumerable: false,
+        configurable: true
+    });
+    Object.defineProperty(ArrowTable.prototype, "columnTable", {
+        get: function () {
+            return this.columnsTable;
+        },
+        enumerable: false,
+        configurable: true
+    });
+    /**
+     * Serialize arrow table.
+     */
+    ArrowTable.prototype.serialize = function () {
+        return {
+            data: tableToIPC(this.dataTable),
+            index: tableToIPC(this.indexTable),
+            columns: tableToIPC(this.columnsTable)
+        };
+    };
+    /**
+     * Returns apache-arrow specific typeId of column.
+     */
+    ArrowTable.prototype.getColumnTypeId = function (table, columnIndex) {
+        return table.schema.fields[columnIndex].type.typeId;
+    };
+    ArrowTable.prototype.nanosToDate = function (nanos) {
+        return new Date(nanos / 1e6);
+    };
+    return ArrowTable;
+}());
+export { ArrowTable };
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/ArrowTable.test.d.ts b/igv_component/node_modules/streamlit-component-lib/dist/ArrowTable.test.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a1a7b16fa69ccb2c8ee470c4ef39e0b478bbb084
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/ArrowTable.test.d.ts
@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export {};
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/ArrowTable.test.js b/igv_component/node_modules/streamlit-component-lib/dist/ArrowTable.test.js
new file mode 100644
index 0000000000000000000000000000000000000000..593f0fb2aaff3da5cfbe789e66eaa2d3588a337f
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/ArrowTable.test.js
@@ -0,0 +1,143 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { ArrowTable } from "./ArrowTable";
+import { EXAMPLE_DF } from "./mock_data";
+var range = function (startAt, endAt) {
+    if (startAt === void 0) { startAt = 0; }
+    if (endAt === void 0) { endAt = 0; }
+    return Array(endAt - startAt)
+        .fill(0)
+        .map(function (_, i) { return i + startAt; });
+};
+describe("ArrowTable", function () {
+    var table = new ArrowTable(EXAMPLE_DF.data, EXAMPLE_DF.index, EXAMPLE_DF.columns);
+    test("basic getters should returns values for basic table", function () {
+        expect(table.rows).toEqual(6);
+        expect(table.columns).toEqual(4);
+        expect(table.headerRows).toEqual(1);
+        expect(table.headerColumns).toEqual(1);
+        expect(table.dataRows).toEqual(5);
+        expect(table.dataColumns).toEqual(3);
+        expect(table.uuid).toEqual(undefined);
+        expect(table.caption).toEqual(undefined);
+        expect(table.styles).toEqual(undefined);
+        expect(table.table).toBeDefined();
+        expect(table.index).toBeDefined();
+        expect(table.columnTable).toBeDefined();
+    });
+    test.each([
+        {
+            rowIndex: 0,
+            columnIndex: 0,
+            expectedResult: {
+                classNames: "blank",
+                content: "",
+                type: "blank",
+            },
+        },
+        {
+            rowIndex: 0,
+            columnIndex: 1,
+            expectedResult: {
+                classNames: "col_heading level0 col0",
+                content: "First Name",
+                type: "columns",
+            },
+        },
+        {
+            rowIndex: 1,
+            columnIndex: 0,
+            expectedResult: {
+                classNames: "row_heading level0 row0",
+                content: BigInt(0),
+                id: "T_undefinedlevel0_row0",
+                type: "index",
+            },
+        },
+        {
+            rowIndex: 1,
+            columnIndex: 1,
+            expectedResult: {
+                classNames: "data row0 col0",
+                content: "Jason",
+                id: "T_undefinedrow0_col0",
+                type: "data",
+            },
+        },
+        {
+            rowIndex: 5,
+            columnIndex: 3,
+            expectedResult: {
+                classNames: "data row4 col2",
+                content: BigInt(73),
+                id: "T_undefinedrow4_col2",
+                type: "data",
+            },
+        },
+    ])("getCell should return cell metadata", function (_a) {
+        var rowIndex = _a.rowIndex, columnIndex = _a.columnIndex, expectedResult = _a.expectedResult;
+        expect(table.getCell(rowIndex, columnIndex)).toEqual(expectedResult);
+    });
+    test("getCell should return cell content", function () {
+        var celContents = range(0, table.rows).map(function (rowIndex) {
+            return range(0, table.columns).map(function (columnIndex) { return table.getCell(rowIndex, columnIndex).content; });
+        });
+        expect(celContents).toEqual([
+            ["", "First Name", "Last Name", "Age"],
+            [
+                BigInt(0),
+                "Jason",
+                "Miller",
+                BigInt(42),
+            ],
+            [
+                BigInt(1),
+                "Molly",
+                "Jacobson",
+                BigInt(52),
+            ],
+            [
+                BigInt(2),
+                "Tina",
+                "Ali",
+                BigInt(36),
+            ],
+            [
+                BigInt(3),
+                "Jake",
+                "Milner",
+                BigInt(24),
+            ],
+            [
+                BigInt(4),
+                "Amy",
+                "Smith",
+                BigInt(73),
+            ],
+        ]);
+    });
+    test("serialize should returns Uint8Array", function () {
+        var _a = table.serialize(), data = _a.data, index = _a.index, columns = _a.columns;
+        expect(data).toBeInstanceOf(Uint8Array);
+        expect(index).toBeInstanceOf(Uint8Array);
+        expect(columns).toBeInstanceOf(Uint8Array);
+        var new_table = new ArrowTable(data, index, columns);
+        expect(new_table.rows).toEqual(6);
+        expect(new_table.columns).toEqual(4);
+        expect(new_table.headerRows).toEqual(1);
+        expect(new_table.headerColumns).toEqual(1);
+    });
+});
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/StreamlitReact.d.ts b/igv_component/node_modules/streamlit-component-lib/dist/StreamlitReact.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..52eee9c65375d8e341e3590196f038430a449b8f
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/StreamlitReact.d.ts
@@ -0,0 +1,52 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import React from "react";
+import { Theme } from "./streamlit";
+/**
+ * Props passed to custom Streamlit components.
+ */
+export interface ComponentProps<ArgType = any> {
+    /** Named dictionary of arguments passed from Python. */
+    args: ArgType;
+    /** The component's width. */
+    width: number;
+    /**
+     * True if the component should be disabled.
+     * All components get disabled while the app is being re-run,
+     * and become re-enabled when the re-run has finished.
+     */
+    disabled: boolean;
+    /** Theme definition dictionary passed from the main client.*/
+    theme?: Theme;
+}
+/**
+ * Optional Streamlit React-based component base class.
+ *
+ * You are not required to extend this base class to create a Streamlit
+ * component. If you decide not to extend it, you should implement the
+ * `componentDidMount` and `componentDidUpdate` functions in your own class,
+ * so that your plugin properly resizes.
+ */
+export declare class StreamlitComponentBase<S = {}, ArgType = any> extends React.PureComponent<ComponentProps<ArgType>, S> {
+    componentDidMount(): void;
+    componentDidUpdate(): void;
+}
+/**
+ * Wrapper for React-based Streamlit components.
+ *
+ * Bootstraps the communication interface between Streamlit and the component.
+ */
+export declare function withStreamlitConnection<ArgType = any>(WrappedComponent: React.ComponentType<ComponentProps>): React.ComponentType;
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/StreamlitReact.js b/igv_component/node_modules/streamlit-component-lib/dist/StreamlitReact.js
new file mode 100644
index 0000000000000000000000000000000000000000..945c1f64cfdadd4f84af7f85f4e413faaf61b04b
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/StreamlitReact.js
@@ -0,0 +1,126 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+var __extends = (this && this.__extends) || (function () {
+    var extendStatics = function (d, b) {
+        extendStatics = Object.setPrototypeOf ||
+            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+            function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
+        return extendStatics(d, b);
+    };
+    return function (d, b) {
+        if (typeof b !== "function" && b !== null)
+            throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
+        extendStatics(d, b);
+        function __() { this.constructor = d; }
+        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+    };
+})();
+import hoistNonReactStatics from "hoist-non-react-statics";
+import React from "react";
+import { Streamlit } from "./streamlit";
+/**
+ * Optional Streamlit React-based component base class.
+ *
+ * You are not required to extend this base class to create a Streamlit
+ * component. If you decide not to extend it, you should implement the
+ * `componentDidMount` and `componentDidUpdate` functions in your own class,
+ * so that your plugin properly resizes.
+ */
+var StreamlitComponentBase = /** @class */ (function (_super) {
+    __extends(StreamlitComponentBase, _super);
+    function StreamlitComponentBase() {
+        return _super !== null && _super.apply(this, arguments) || this;
+    }
+    StreamlitComponentBase.prototype.componentDidMount = function () {
+        // After we're rendered for the first time, tell Streamlit that our height
+        // has changed.
+        Streamlit.setFrameHeight();
+    };
+    StreamlitComponentBase.prototype.componentDidUpdate = function () {
+        // After we're updated, tell Streamlit that our height may have changed.
+        Streamlit.setFrameHeight();
+    };
+    return StreamlitComponentBase;
+}(React.PureComponent));
+export { StreamlitComponentBase };
+/**
+ * Wrapper for React-based Streamlit components.
+ *
+ * Bootstraps the communication interface between Streamlit and the component.
+ */
+export function withStreamlitConnection(WrappedComponent) {
+    var ComponentWrapper = /** @class */ (function (_super) {
+        __extends(ComponentWrapper, _super);
+        function ComponentWrapper(props) {
+            var _this = _super.call(this, props) || this;
+            _this.componentDidMount = function () {
+                // Set up event listeners, and signal to Streamlit that we're ready.
+                // We won't render the component until we receive the first RENDER_EVENT.
+                Streamlit.events.addEventListener(Streamlit.RENDER_EVENT, _this.onRenderEvent);
+                Streamlit.setComponentReady();
+            };
+            _this.componentDidUpdate = function () {
+                // If our child threw an error, we display it in render(). In this
+                // case, the child won't be mounted and therefore won't call
+                // `setFrameHeight` on its own. We do it here so that the rendered
+                // error will be visible.
+                if (_this.state.componentError != null) {
+                    Streamlit.setFrameHeight();
+                }
+            };
+            _this.componentWillUnmount = function () {
+                Streamlit.events.removeEventListener(Streamlit.RENDER_EVENT, _this.onRenderEvent);
+            };
+            /**
+             * Streamlit is telling this component to redraw.
+             * We save the render data in State, so that it can be passed to the
+             * component in our own render() function.
+             */
+            _this.onRenderEvent = function (event) {
+                // Update our state with the newest render data
+                _this.setState({ renderData: event.detail });
+            };
+            _this.state = {
+                renderData: undefined,
+                componentError: undefined
+            };
+            return _this;
+        }
+        ComponentWrapper.prototype.render = function () {
+            // If our wrapped component threw an error, display it.
+            if (this.state.componentError != null) {
+                return (React.createElement("div", null,
+                    React.createElement("h1", null, "Component Error"),
+                    React.createElement("span", null, this.state.componentError.message)));
+            }
+            // Don't render until we've gotten our first RENDER_EVENT from Streamlit.
+            if (this.state.renderData == null) {
+                return null;
+            }
+            return (React.createElement(WrappedComponent, { width: window.innerWidth, disabled: this.state.renderData.disabled, args: this.state.renderData.args, theme: this.state.renderData.theme }));
+        };
+        /**
+         * Error boundary function. This will be called if our wrapped
+         * component throws an error. We store the caught error in our state,
+         * and display it in the next render().
+         */
+        ComponentWrapper.getDerivedStateFromError = function (error) {
+            return { componentError: error };
+        };
+        return ComponentWrapper;
+    }(React.PureComponent));
+    return hoistNonReactStatics(ComponentWrapper, WrappedComponent);
+}
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/StreamlitReact.test.d.ts b/igv_component/node_modules/streamlit-component-lib/dist/StreamlitReact.test.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a1a7b16fa69ccb2c8ee470c4ef39e0b478bbb084
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/StreamlitReact.test.d.ts
@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export {};
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/StreamlitReact.test.js b/igv_component/node_modules/streamlit-component-lib/dist/StreamlitReact.test.js
new file mode 100644
index 0000000000000000000000000000000000000000..c766cce878c19a216c7b9fdaa8496b6be0bff939
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/StreamlitReact.test.js
@@ -0,0 +1,259 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+var __extends = (this && this.__extends) || (function () {
+    var extendStatics = function (d, b) {
+        extendStatics = Object.setPrototypeOf ||
+            ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+            function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
+        return extendStatics(d, b);
+    };
+    return function (d, b) {
+        if (typeof b !== "function" && b !== null)
+            throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
+        extendStatics(d, b);
+        function __() { this.constructor = d; }
+        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+    };
+})();
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+var __generator = (this && this.__generator) || function (thisArg, body) {
+    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
+    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
+    function verb(n) { return function (v) { return step([n, v]); }; }
+    function step(op) {
+        if (f) throw new TypeError("Generator is already executing.");
+        while (g && (g = 0, op[0] && (_ = 0)), _) try {
+            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
+            if (y = 0, t) op = [op[0] & 2, t.value];
+            switch (op[0]) {
+                case 0: case 1: t = op; break;
+                case 4: _.label++; return { value: op[1], done: false };
+                case 5: _.label++; y = op[1]; op = [0]; continue;
+                case 7: op = _.ops.pop(); _.trys.pop(); continue;
+                default:
+                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
+                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
+                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
+                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
+                    if (t[2]) _.ops.pop();
+                    _.trys.pop(); continue;
+            }
+            op = body.call(thisArg, _);
+        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
+        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
+    }
+};
+import { StreamlitComponentBase, withStreamlitConnection, } from "./StreamlitReact";
+import * as React from "react";
+import { render } from "@testing-library/react";
+import { tick } from "./test_utils";
+import { EXAMPLE_DF } from "./mock_data";
+import { Streamlit } from "./streamlit";
+var StaticComponent = /** @class */ (function (_super) {
+    __extends(StaticComponent, _super);
+    function StaticComponent() {
+        return _super !== null && _super.apply(this, arguments) || this;
+    }
+    StaticComponent.prototype.render = function () {
+        return React.createElement(React.Fragment, null, "Static component");
+    };
+    return StaticComponent;
+}(StreamlitComponentBase));
+describe("StreamlitReact", function () {
+    test("the component should be empty initially", function () {
+        var StreamlitComponent = withStreamlitConnection(StaticComponent);
+        expect(document.body.innerHTML).toEqual("");
+        render(React.createElement(StreamlitComponent, null));
+        expect(document.body.innerHTML).toEqual("<div></div>");
+    });
+    test("the component should be visible after initialization", function () { return __awaiter(void 0, void 0, void 0, function () {
+        var StreamlitComponent, getByText;
+        return __generator(this, function (_a) {
+            switch (_a.label) {
+                case 0:
+                    StreamlitComponent = withStreamlitConnection(StaticComponent);
+                    expect(document.body.innerHTML).toEqual("");
+                    getByText = render(React.createElement(StreamlitComponent, null)).getByText;
+                    window.postMessage({ type: "streamlit:render", args: {} }, "*");
+                    return [4 /*yield*/, tick()];
+                case 1:
+                    _a.sent();
+                    expect(getByText("Static component")).toBeInTheDocument();
+                    return [2 /*return*/];
+            }
+        });
+    }); });
+    test("the component should receive arguments from the parent frame", function () { return __awaiter(void 0, void 0, void 0, function () {
+        var ComponentWithArguments, Component, getByText;
+        return __generator(this, function (_a) {
+            switch (_a.label) {
+                case 0:
+                    ComponentWithArguments = /** @class */ (function (_super) {
+                        __extends(ComponentWithArguments, _super);
+                        function ComponentWithArguments() {
+                            return _super !== null && _super.apply(this, arguments) || this;
+                        }
+                        ComponentWithArguments.prototype.render = function () {
+                            return React.createElement("p", null, this.props.args.firstArg);
+                        };
+                        return ComponentWithArguments;
+                    }(StreamlitComponentBase));
+                    Component = withStreamlitConnection(ComponentWithArguments);
+                    getByText = render(React.createElement(Component, null)).getByText;
+                    window.postMessage({ type: "streamlit:render", args: { firstArg: "Argument text 123" } }, "*");
+                    return [4 /*yield*/, tick()];
+                case 1:
+                    _a.sent();
+                    expect(getByText("Argument text 123")).toBeInTheDocument();
+                    return [2 /*return*/];
+            }
+        });
+    }); });
+    test("the component should receive dataframe from the parent frame", function () { return __awaiter(void 0, void 0, void 0, function () {
+        var DataframeComponent, Component, getByText;
+        return __generator(this, function (_a) {
+            switch (_a.label) {
+                case 0:
+                    DataframeComponent = /** @class */ (function (_super) {
+                        __extends(DataframeComponent, _super);
+                        function DataframeComponent() {
+                            return _super !== null && _super.apply(this, arguments) || this;
+                        }
+                        DataframeComponent.prototype.render = function () {
+                            var firstArg = this.props.args.firstArg;
+                            var content = firstArg.getCell(1, 1).content;
+                            return React.createElement(React.Fragment, null, String(content));
+                        };
+                        return DataframeComponent;
+                    }(StreamlitComponentBase));
+                    Component = withStreamlitConnection(DataframeComponent);
+                    getByText = render(React.createElement(Component, null)).getByText;
+                    window.postMessage({
+                        type: "streamlit:render",
+                        args: {},
+                        dfs: [
+                            {
+                                key: "firstArg",
+                                value: {
+                                    data: {
+                                        data: EXAMPLE_DF.data,
+                                        index: EXAMPLE_DF.index,
+                                        columns: EXAMPLE_DF.columns,
+                                    },
+                                },
+                            },
+                        ],
+                    }, "*");
+                    return [4 /*yield*/, tick()];
+                case 1:
+                    _a.sent();
+                    expect(getByText("Jason")).toBeInTheDocument();
+                    return [2 /*return*/];
+            }
+        });
+    }); });
+    test("the component error should be visible", function () { return __awaiter(void 0, void 0, void 0, function () {
+        var BrokenComponent, Component, getByText;
+        return __generator(this, function (_a) {
+            switch (_a.label) {
+                case 0:
+                    BrokenComponent = /** @class */ (function (_super) {
+                        __extends(BrokenComponent, _super);
+                        function BrokenComponent() {
+                            return _super !== null && _super.apply(this, arguments) || this;
+                        }
+                        BrokenComponent.prototype.render = function () {
+                            throw new Error("Error in component");
+                        };
+                        return BrokenComponent;
+                    }(StreamlitComponentBase));
+                    jest.spyOn(console, 'error').mockImplementation(function () { });
+                    Component = withStreamlitConnection(BrokenComponent);
+                    getByText = render(React.createElement(Component, null)).getByText;
+                    window.postMessage({
+                        type: "streamlit:render",
+                        args: {},
+                    }, "*");
+                    return [4 /*yield*/, tick()];
+                case 1:
+                    _a.sent();
+                    expect(getByText("Component Error")).toBeInTheDocument();
+                    expect(getByText("Error in component")).toBeInTheDocument();
+                    expect(jest.mocked(console.error).mock.calls).toHaveLength(2);
+                    return [2 /*return*/];
+            }
+        });
+    }); });
+    test("the component should update the frame height intiailly", function () { return __awaiter(void 0, void 0, void 0, function () {
+        var Component, getByText;
+        return __generator(this, function (_a) {
+            switch (_a.label) {
+                case 0:
+                    jest.spyOn(Streamlit, 'setFrameHeight');
+                    Component = withStreamlitConnection(StaticComponent);
+                    getByText = render(React.createElement(Component, null)).getByText;
+                    window.postMessage({
+                        type: "streamlit:render",
+                        args: {},
+                    }, "*");
+                    return [4 /*yield*/, tick()];
+                case 1:
+                    _a.sent();
+                    expect(jest.mocked(Streamlit.setFrameHeight).mock.calls).toHaveLength(1);
+                    expect(getByText("Static component")).toBeInTheDocument();
+                    return [2 /*return*/];
+            }
+        });
+    }); });
+    test("the component should update the frame height after updating the arguments", function () { return __awaiter(void 0, void 0, void 0, function () {
+        var Component, _i, _a, value;
+        return __generator(this, function (_b) {
+            switch (_b.label) {
+                case 0:
+                    jest.spyOn(Streamlit, 'setFrameHeight');
+                    Component = withStreamlitConnection(StaticComponent);
+                    render(React.createElement(Component, null));
+                    _i = 0, _a = [1, 2, 3];
+                    _b.label = 1;
+                case 1:
+                    if (!(_i < _a.length)) return [3 /*break*/, 4];
+                    value = _a[_i];
+                    window.postMessage({
+                        type: "streamlit:render",
+                        args: { value: value },
+                    }, "*");
+                    return [4 /*yield*/, tick()];
+                case 2:
+                    _b.sent();
+                    _b.label = 3;
+                case 3:
+                    _i++;
+                    return [3 /*break*/, 1];
+                case 4:
+                    expect(jest.mocked(Streamlit.setFrameHeight).mock.calls).toHaveLength(3);
+                    return [2 /*return*/];
+            }
+        });
+    }); });
+});
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/index.d.ts b/igv_component/node_modules/streamlit-component-lib/dist/index.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..ae801d3e4fb8a48fbf7572bc467bbf3c5b73ae25
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/index.d.ts
@@ -0,0 +1,23 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { ComponentProps as ComponentProps_ } from "./StreamlitReact";
+import { RenderData as RenderData_, Theme as Theme_ } from "./streamlit";
+export { StreamlitComponentBase, withStreamlitConnection } from "./StreamlitReact";
+export { ArrowTable } from "./ArrowTable";
+export { Streamlit } from "./streamlit";
+export type ComponentProps = ComponentProps_;
+export type RenderData<ArgType = any> = RenderData_<ArgType>;
+export type Theme = Theme_;
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/index.js b/igv_component/node_modules/streamlit-component-lib/dist/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..9c5a4b803ee211e5f5685b4115cb9e4d9039eaf4
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/index.js
@@ -0,0 +1,18 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export { StreamlitComponentBase, withStreamlitConnection } from "./StreamlitReact";
+export { ArrowTable } from "./ArrowTable";
+export { Streamlit } from "./streamlit";
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/mock_data.d.ts b/igv_component/node_modules/streamlit-component-lib/dist/mock_data.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..6937a8973ffa8c7a1f3417ddf40cf37c5da0167c
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/mock_data.d.ts
@@ -0,0 +1,20 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export declare const EXAMPLE_DF: {
+    data: Uint8Array;
+    index: Uint8Array;
+    columns: Uint8Array;
+};
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/mock_data.js b/igv_component/node_modules/streamlit-component-lib/dist/mock_data.js
new file mode 100644
index 0000000000000000000000000000000000000000..d809793c47fd015dfb0940d1c2316c243bae84c5
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/mock_data.js
@@ -0,0 +1,181 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// Raw data (in Apache Arrow format) for a dataframe
+// that uses `Int64Index` for both `index` and `columns` attributes.
+//
+// raw_data = {
+//   "First Name": ["Jason", "Molly", "Tina", "Jake", "Amy"],
+//   "Last Name": ["Miller", "Jacobson", "Ali", "Milner", "Smith"],
+//   "Age": [42, 52, 36, 24, 73],
+// }
+//
+// df = pd.DataFrame(raw_data, columns=["First Name", "Last Name", "Age"])
+export var EXAMPLE_DF = {
+    data: new Uint8Array([
+        255, 255, 255, 255, 96, 3, 0, 0, 16, 0, 0, 0, 0, 0, 10, 0, 14, 0, 6, 0, 5,
+        0, 8, 0, 10, 0, 0, 0, 0, 1, 4, 0, 16, 0, 0, 0, 0, 0, 10, 0, 12, 0, 0, 0, 4,
+        0, 8, 0, 10, 0, 0, 0, 148, 2, 0, 0, 4, 0, 0, 0, 1, 0, 0, 0, 12, 0, 0, 0, 8,
+        0, 12, 0, 4, 0, 8, 0, 8, 0, 0, 0, 108, 2, 0, 0, 4, 0, 0, 0, 95, 2, 0, 0,
+        123, 34, 105, 110, 100, 101, 120, 95, 99, 111, 108, 117, 109, 110, 115, 34,
+        58, 32, 91, 123, 34, 107, 105, 110, 100, 34, 58, 32, 34, 114, 97, 110, 103,
+        101, 34, 44, 32, 34, 110, 97, 109, 101, 34, 58, 32, 110, 117, 108, 108, 44,
+        32, 34, 115, 116, 97, 114, 116, 34, 58, 32, 48, 44, 32, 34, 115, 116, 111,
+        112, 34, 58, 32, 53, 44, 32, 34, 115, 116, 101, 112, 34, 58, 32, 49, 125,
+        93, 44, 32, 34, 99, 111, 108, 117, 109, 110, 95, 105, 110, 100, 101, 120,
+        101, 115, 34, 58, 32, 91, 123, 34, 110, 97, 109, 101, 34, 58, 32, 110, 117,
+        108, 108, 44, 32, 34, 102, 105, 101, 108, 100, 95, 110, 97, 109, 101, 34,
+        58, 32, 110, 117, 108, 108, 44, 32, 34, 112, 97, 110, 100, 97, 115, 95, 116,
+        121, 112, 101, 34, 58, 32, 34, 105, 110, 116, 54, 52, 34, 44, 32, 34, 110,
+        117, 109, 112, 121, 95, 116, 121, 112, 101, 34, 58, 32, 34, 105, 110, 116,
+        54, 52, 34, 44, 32, 34, 109, 101, 116, 97, 100, 97, 116, 97, 34, 58, 32,
+        110, 117, 108, 108, 125, 93, 44, 32, 34, 99, 111, 108, 117, 109, 110, 115,
+        34, 58, 32, 91, 123, 34, 110, 97, 109, 101, 34, 58, 32, 34, 48, 34, 44, 32,
+        34, 102, 105, 101, 108, 100, 95, 110, 97, 109, 101, 34, 58, 32, 34, 48, 34,
+        44, 32, 34, 112, 97, 110, 100, 97, 115, 95, 116, 121, 112, 101, 34, 58, 32,
+        34, 117, 110, 105, 99, 111, 100, 101, 34, 44, 32, 34, 110, 117, 109, 112,
+        121, 95, 116, 121, 112, 101, 34, 58, 32, 34, 111, 98, 106, 101, 99, 116, 34,
+        44, 32, 34, 109, 101, 116, 97, 100, 97, 116, 97, 34, 58, 32, 110, 117, 108,
+        108, 125, 44, 32, 123, 34, 110, 97, 109, 101, 34, 58, 32, 34, 49, 34, 44,
+        32, 34, 102, 105, 101, 108, 100, 95, 110, 97, 109, 101, 34, 58, 32, 34, 49,
+        34, 44, 32, 34, 112, 97, 110, 100, 97, 115, 95, 116, 121, 112, 101, 34, 58,
+        32, 34, 117, 110, 105, 99, 111, 100, 101, 34, 44, 32, 34, 110, 117, 109,
+        112, 121, 95, 116, 121, 112, 101, 34, 58, 32, 34, 111, 98, 106, 101, 99,
+        116, 34, 44, 32, 34, 109, 101, 116, 97, 100, 97, 116, 97, 34, 58, 32, 110,
+        117, 108, 108, 125, 44, 32, 123, 34, 110, 97, 109, 101, 34, 58, 32, 34, 50,
+        34, 44, 32, 34, 102, 105, 101, 108, 100, 95, 110, 97, 109, 101, 34, 58, 32,
+        34, 50, 34, 44, 32, 34, 112, 97, 110, 100, 97, 115, 95, 116, 121, 112, 101,
+        34, 58, 32, 34, 105, 110, 116, 54, 52, 34, 44, 32, 34, 110, 117, 109, 112,
+        121, 95, 116, 121, 112, 101, 34, 58, 32, 34, 111, 98, 106, 101, 99, 116, 34,
+        44, 32, 34, 109, 101, 116, 97, 100, 97, 116, 97, 34, 58, 32, 110, 117, 108,
+        108, 125, 93, 44, 32, 34, 99, 114, 101, 97, 116, 111, 114, 34, 58, 32, 123,
+        34, 108, 105, 98, 114, 97, 114, 121, 34, 58, 32, 34, 112, 121, 97, 114, 114,
+        111, 119, 34, 44, 32, 34, 118, 101, 114, 115, 105, 111, 110, 34, 58, 32, 34,
+        49, 49, 46, 48, 46, 48, 34, 125, 44, 32, 34, 112, 97, 110, 100, 97, 115, 95,
+        118, 101, 114, 115, 105, 111, 110, 34, 58, 32, 34, 49, 46, 51, 46, 53, 34,
+        125, 0, 6, 0, 0, 0, 112, 97, 110, 100, 97, 115, 0, 0, 3, 0, 0, 0, 116, 0, 0,
+        0, 60, 0, 0, 0, 4, 0, 0, 0, 168, 255, 255, 255, 0, 0, 1, 2, 16, 0, 0, 0, 28,
+        0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 50, 0, 0, 0, 8, 0, 12, 0, 8, 0,
+        7, 0, 8, 0, 0, 0, 0, 0, 0, 1, 64, 0, 0, 0, 220, 255, 255, 255, 0, 0, 1, 5,
+        16, 0, 0, 0, 20, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 49, 0, 0, 0,
+        204, 255, 255, 255, 16, 0, 20, 0, 8, 0, 6, 0, 7, 0, 12, 0, 0, 0, 16, 0, 16,
+        0, 0, 0, 0, 0, 1, 5, 16, 0, 0, 0, 24, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 1, 0,
+        0, 0, 48, 0, 0, 0, 4, 0, 4, 0, 4, 0, 0, 0, 255, 255, 255, 255, 8, 1, 0, 0,
+        20, 0, 0, 0, 0, 0, 0, 0, 12, 0, 22, 0, 6, 0, 5, 0, 8, 0, 12, 0, 12, 0, 0, 0,
+        0, 3, 4, 0, 24, 0, 0, 0, 144, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, 24, 0, 12,
+        0, 4, 0, 8, 0, 10, 0, 0, 0, 156, 0, 0, 0, 16, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 8, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 24, 0, 0, 0, 0, 0, 0, 0, 24, 0, 0, 0, 0, 0, 0, 0,
+        21, 0, 0, 0, 0, 0, 0, 0, 48, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        48, 0, 0, 0, 0, 0, 0, 0, 24, 0, 0, 0, 0, 0, 0, 0, 72, 0, 0, 0, 0, 0, 0, 0,
+        28, 0, 0, 0, 0, 0, 0, 0, 104, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        104, 0, 0, 0, 0, 0, 0, 0, 40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0,
+        5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 5, 0, 0, 0, 10, 0, 0, 0, 14, 0, 0, 0, 18, 0, 0, 0, 21, 0, 0, 0, 74,
+        97, 115, 111, 110, 77, 111, 108, 108, 121, 84, 105, 110, 97, 74, 97, 107,
+        101, 65, 109, 121, 0, 0, 0, 0, 0, 0, 0, 6, 0, 0, 0, 14, 0, 0, 0, 17, 0, 0,
+        0, 23, 0, 0, 0, 28, 0, 0, 0, 77, 105, 108, 108, 101, 114, 74, 97, 99, 111,
+        98, 115, 111, 110, 65, 108, 105, 77, 105, 108, 110, 101, 114, 83, 109, 105,
+        116, 104, 0, 0, 0, 0, 42, 0, 0, 0, 0, 0, 0, 0, 52, 0, 0, 0, 0, 0, 0, 0, 36,
+        0, 0, 0, 0, 0, 0, 0, 24, 0, 0, 0, 0, 0, 0, 0, 73, 0, 0, 0, 0, 0, 0, 0, 255,
+        255, 255, 255, 0, 0, 0, 0,
+    ]),
+    index: new Uint8Array([
+        255, 255, 255, 255, 64, 2, 0, 0, 16, 0, 0, 0, 0, 0, 10, 0, 14, 0, 6, 0, 5,
+        0, 8, 0, 10, 0, 0, 0, 0, 1, 4, 0, 16, 0, 0, 0, 0, 0, 10, 0, 12, 0, 0, 0, 4,
+        0, 8, 0, 10, 0, 0, 0, 200, 1, 0, 0, 4, 0, 0, 0, 1, 0, 0, 0, 12, 0, 0, 0, 8,
+        0, 12, 0, 4, 0, 8, 0, 8, 0, 0, 0, 160, 1, 0, 0, 4, 0, 0, 0, 146, 1, 0, 0,
+        123, 34, 105, 110, 100, 101, 120, 95, 99, 111, 108, 117, 109, 110, 115, 34,
+        58, 32, 91, 123, 34, 107, 105, 110, 100, 34, 58, 32, 34, 114, 97, 110, 103,
+        101, 34, 44, 32, 34, 110, 97, 109, 101, 34, 58, 32, 110, 117, 108, 108, 44,
+        32, 34, 115, 116, 97, 114, 116, 34, 58, 32, 48, 44, 32, 34, 115, 116, 111,
+        112, 34, 58, 32, 53, 44, 32, 34, 115, 116, 101, 112, 34, 58, 32, 49, 125,
+        93, 44, 32, 34, 99, 111, 108, 117, 109, 110, 95, 105, 110, 100, 101, 120,
+        101, 115, 34, 58, 32, 91, 123, 34, 110, 97, 109, 101, 34, 58, 32, 110, 117,
+        108, 108, 44, 32, 34, 102, 105, 101, 108, 100, 95, 110, 97, 109, 101, 34,
+        58, 32, 110, 117, 108, 108, 44, 32, 34, 112, 97, 110, 100, 97, 115, 95, 116,
+        121, 112, 101, 34, 58, 32, 34, 105, 110, 116, 54, 52, 34, 44, 32, 34, 110,
+        117, 109, 112, 121, 95, 116, 121, 112, 101, 34, 58, 32, 34, 105, 110, 116,
+        54, 52, 34, 44, 32, 34, 109, 101, 116, 97, 100, 97, 116, 97, 34, 58, 32,
+        110, 117, 108, 108, 125, 93, 44, 32, 34, 99, 111, 108, 117, 109, 110, 115,
+        34, 58, 32, 91, 123, 34, 110, 97, 109, 101, 34, 58, 32, 34, 48, 34, 44, 32,
+        34, 102, 105, 101, 108, 100, 95, 110, 97, 109, 101, 34, 58, 32, 34, 48, 34,
+        44, 32, 34, 112, 97, 110, 100, 97, 115, 95, 116, 121, 112, 101, 34, 58, 32,
+        34, 105, 110, 116, 54, 52, 34, 44, 32, 34, 110, 117, 109, 112, 121, 95, 116,
+        121, 112, 101, 34, 58, 32, 34, 105, 110, 116, 54, 52, 34, 44, 32, 34, 109,
+        101, 116, 97, 100, 97, 116, 97, 34, 58, 32, 110, 117, 108, 108, 125, 93, 44,
+        32, 34, 99, 114, 101, 97, 116, 111, 114, 34, 58, 32, 123, 34, 108, 105, 98,
+        114, 97, 114, 121, 34, 58, 32, 34, 112, 121, 97, 114, 114, 111, 119, 34, 44,
+        32, 34, 118, 101, 114, 115, 105, 111, 110, 34, 58, 32, 34, 49, 49, 46, 48,
+        46, 48, 34, 125, 44, 32, 34, 112, 97, 110, 100, 97, 115, 95, 118, 101, 114,
+        115, 105, 111, 110, 34, 58, 32, 34, 49, 46, 51, 46, 53, 34, 125, 0, 0, 6, 0,
+        0, 0, 112, 97, 110, 100, 97, 115, 0, 0, 1, 0, 0, 0, 20, 0, 0, 0, 16, 0, 20,
+        0, 8, 0, 6, 0, 7, 0, 12, 0, 0, 0, 16, 0, 16, 0, 0, 0, 0, 0, 1, 2, 16, 0, 0,
+        0, 28, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 48, 0, 0, 0, 8, 0, 12,
+        0, 8, 0, 7, 0, 8, 0, 0, 0, 0, 0, 0, 1, 64, 0, 0, 0, 255, 255, 255, 255, 136,
+        0, 0, 0, 20, 0, 0, 0, 0, 0, 0, 0, 12, 0, 22, 0, 6, 0, 5, 0, 8, 0, 12, 0, 12,
+        0, 0, 0, 0, 3, 4, 0, 24, 0, 0, 0, 40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, 24,
+        0, 12, 0, 4, 0, 8, 0, 10, 0, 0, 0, 60, 0, 0, 0, 16, 0, 0, 0, 5, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0,
+        0, 5, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        1, 0, 0, 0, 0, 0, 0, 0, 2, 0, 0, 0, 0, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 4,
+        0, 0, 0, 0, 0, 0, 0, 255, 255, 255, 255, 0, 0, 0, 0,
+    ]),
+    columns: new Uint8Array([
+        255, 255, 255, 255, 56, 2, 0, 0, 16, 0, 0, 0, 0, 0, 10, 0, 14, 0, 6, 0, 5,
+        0, 8, 0, 10, 0, 0, 0, 0, 1, 4, 0, 16, 0, 0, 0, 0, 0, 10, 0, 12, 0, 0, 0, 4,
+        0, 8, 0, 10, 0, 0, 0, 204, 1, 0, 0, 4, 0, 0, 0, 1, 0, 0, 0, 12, 0, 0, 0, 8,
+        0, 12, 0, 4, 0, 8, 0, 8, 0, 0, 0, 164, 1, 0, 0, 4, 0, 0, 0, 149, 1, 0, 0,
+        123, 34, 105, 110, 100, 101, 120, 95, 99, 111, 108, 117, 109, 110, 115, 34,
+        58, 32, 91, 123, 34, 107, 105, 110, 100, 34, 58, 32, 34, 114, 97, 110, 103,
+        101, 34, 44, 32, 34, 110, 97, 109, 101, 34, 58, 32, 110, 117, 108, 108, 44,
+        32, 34, 115, 116, 97, 114, 116, 34, 58, 32, 48, 44, 32, 34, 115, 116, 111,
+        112, 34, 58, 32, 51, 44, 32, 34, 115, 116, 101, 112, 34, 58, 32, 49, 125,
+        93, 44, 32, 34, 99, 111, 108, 117, 109, 110, 95, 105, 110, 100, 101, 120,
+        101, 115, 34, 58, 32, 91, 123, 34, 110, 97, 109, 101, 34, 58, 32, 110, 117,
+        108, 108, 44, 32, 34, 102, 105, 101, 108, 100, 95, 110, 97, 109, 101, 34,
+        58, 32, 110, 117, 108, 108, 44, 32, 34, 112, 97, 110, 100, 97, 115, 95, 116,
+        121, 112, 101, 34, 58, 32, 34, 105, 110, 116, 54, 52, 34, 44, 32, 34, 110,
+        117, 109, 112, 121, 95, 116, 121, 112, 101, 34, 58, 32, 34, 105, 110, 116,
+        54, 52, 34, 44, 32, 34, 109, 101, 116, 97, 100, 97, 116, 97, 34, 58, 32,
+        110, 117, 108, 108, 125, 93, 44, 32, 34, 99, 111, 108, 117, 109, 110, 115,
+        34, 58, 32, 91, 123, 34, 110, 97, 109, 101, 34, 58, 32, 34, 48, 34, 44, 32,
+        34, 102, 105, 101, 108, 100, 95, 110, 97, 109, 101, 34, 58, 32, 34, 48, 34,
+        44, 32, 34, 112, 97, 110, 100, 97, 115, 95, 116, 121, 112, 101, 34, 58, 32,
+        34, 117, 110, 105, 99, 111, 100, 101, 34, 44, 32, 34, 110, 117, 109, 112,
+        121, 95, 116, 121, 112, 101, 34, 58, 32, 34, 111, 98, 106, 101, 99, 116, 34,
+        44, 32, 34, 109, 101, 116, 97, 100, 97, 116, 97, 34, 58, 32, 110, 117, 108,
+        108, 125, 93, 44, 32, 34, 99, 114, 101, 97, 116, 111, 114, 34, 58, 32, 123,
+        34, 108, 105, 98, 114, 97, 114, 121, 34, 58, 32, 34, 112, 121, 97, 114, 114,
+        111, 119, 34, 44, 32, 34, 118, 101, 114, 115, 105, 111, 110, 34, 58, 32, 34,
+        49, 49, 46, 48, 46, 48, 34, 125, 44, 32, 34, 112, 97, 110, 100, 97, 115, 95,
+        118, 101, 114, 115, 105, 111, 110, 34, 58, 32, 34, 49, 46, 51, 46, 53, 34,
+        125, 0, 0, 0, 6, 0, 0, 0, 112, 97, 110, 100, 97, 115, 0, 0, 1, 0, 0, 0, 20,
+        0, 0, 0, 16, 0, 20, 0, 8, 0, 6, 0, 7, 0, 12, 0, 0, 0, 16, 0, 16, 0, 0, 0, 0,
+        0, 1, 5, 16, 0, 0, 0, 24, 0, 0, 0, 4, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 48,
+        0, 0, 0, 4, 0, 4, 0, 4, 0, 0, 0, 255, 255, 255, 255, 152, 0, 0, 0, 20, 0, 0,
+        0, 0, 0, 0, 0, 12, 0, 22, 0, 6, 0, 5, 0, 8, 0, 12, 0, 12, 0, 0, 0, 0, 3, 4,
+        0, 24, 0, 0, 0, 40, 0, 0, 0, 0, 0, 0, 0, 0, 0, 10, 0, 24, 0, 12, 0, 4, 0, 8,
+        0, 10, 0, 0, 0, 76, 0, 0, 0, 16, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0, 16, 0, 0, 0, 0, 0, 0, 0, 22, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 3, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
+        0, 0, 0, 0, 0, 0, 0, 10, 0, 0, 0, 19, 0, 0, 0, 22, 0, 0, 0, 70, 105, 114,
+        115, 116, 32, 78, 97, 109, 101, 76, 97, 115, 116, 32, 78, 97, 109, 101, 65,
+        103, 101, 0, 0, 255, 255, 255, 255, 0, 0, 0, 0,
+    ]),
+};
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/setupTests.d.ts b/igv_component/node_modules/streamlit-component-lib/dist/setupTests.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a1a7b16fa69ccb2c8ee470c4ef39e0b478bbb084
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/setupTests.d.ts
@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export {};
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/setupTests.js b/igv_component/node_modules/streamlit-component-lib/dist/setupTests.js
new file mode 100644
index 0000000000000000000000000000000000000000..6ec90fe80a13f805302742e56ea354475189ffde
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/setupTests.js
@@ -0,0 +1,34 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { TextEncoder, TextDecoder } from "util";
+global.TextEncoder = TextEncoder;
+// @ts-expect-error
+global.TextDecoder = TextDecoder;
+beforeEach(function () {
+    // The Streamlit class defines several static fields. To avoid side effects,
+    // we restore them to their original state.
+    var Streamlit = require('./streamlit').Streamlit;
+    Object.defineProperty(Streamlit, 'registeredMessageListener', {
+        value: false,
+        configurable: true,
+        writable: true
+    });
+    Object.defineProperty(Streamlit, 'lastFrameHeight', {
+        value: null,
+        configurable: true,
+        writable: true
+    });
+});
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/streamlit.d.ts b/igv_component/node_modules/streamlit-component-lib/dist/streamlit.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..df0ede9b0d9af1e0ab52297eac955d138bb21689
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/streamlit.d.ts
@@ -0,0 +1,92 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+import { ArrowTable } from "./ArrowTable";
+/** Object defining the currently set theme. */
+export interface Theme {
+    base: string;
+    primaryColor: string;
+    backgroundColor: string;
+    secondaryBackgroundColor: string;
+    textColor: string;
+    font: string;
+}
+/** Data sent in the custom Streamlit render event. */
+export interface RenderData<ArgType = any> {
+    args: ArgType;
+    disabled: boolean;
+    theme?: Theme;
+}
+type ComponentValue = ArrowTable | TypedArray | ArrayBuffer | any;
+/**
+ * Streamlit communication API.
+ *
+ * Components can send data to Streamlit via the functions defined here,
+ * and receive data from Streamlit via the `events` property.
+ */
+export declare class Streamlit {
+    /**
+     * The Streamlit component API version we're targeting.
+     * There's currently only 1!
+     */
+    static readonly API_VERSION = 1;
+    static readonly RENDER_EVENT = "streamlit:render";
+    /** Dispatches events received from Streamlit. */
+    static readonly events: EventTarget;
+    private static registeredMessageListener;
+    private static lastFrameHeight?;
+    /**
+     * Tell Streamlit that the component is ready to start receiving data.
+     * Streamlit will defer emitting RENDER events until it receives the
+     * COMPONENT_READY message.
+     */
+    static setComponentReady: () => void;
+    /**
+     * Report the component's height to Streamlit.
+     * This should be called every time the component changes its DOM - that is,
+     * when it's first loaded, and any time it updates.
+     */
+    static setFrameHeight: (height?: number) => void;
+    /**
+     * Set the component's value. This value will be returned to the Python
+     * script, and the script will be re-run.
+     *
+     * For example:
+     *
+     * JavaScript:
+     * Streamlit.setComponentValue("ahoy!")
+     *
+     * Python:
+     * value = st.my_component(...)
+     * st.write(value) # -> "ahoy!"
+     *
+     * The value must be an ArrowTable, a typed array, an ArrayBuffer, or be
+     * serializable to JSON.
+     */
+    static setComponentValue: (value: ComponentValue) => void;
+    /** Receive a ForwardMsg from the Streamlit app */
+    private static onMessageEvent;
+    /**
+     * Handle an untyped Streamlit render event and redispatch it as a
+     * StreamlitRenderEvent.
+     */
+    private static onRenderMessage;
+    private static argsDataframeToObject;
+    private static toArrowTable;
+    /** Post a message to the Streamlit app. */
+    private static sendBackMsg;
+}
+type TypedArray = Int8Array | Uint8Array | Uint8ClampedArray | Int16Array | Uint16Array | Int32Array | Uint32Array | Float32Array | Float64Array | BigInt64Array | BigUint64Array;
+export {};
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/streamlit.js b/igv_component/node_modules/streamlit-component-lib/dist/streamlit.js
new file mode 100644
index 0000000000000000000000000000000000000000..9f07d96a952dd368c0ddf0bc4fc94964c690c1a5
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/streamlit.js
@@ -0,0 +1,216 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+var __assign = (this && this.__assign) || function () {
+    __assign = Object.assign || function(t) {
+        for (var s, i = 1, n = arguments.length; i < n; i++) {
+            s = arguments[i];
+            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
+                t[p] = s[p];
+        }
+        return t;
+    };
+    return __assign.apply(this, arguments);
+};
+// Safari doesn't support the EventTarget class, so we use a shim.
+import { ArrowTable } from "./ArrowTable";
+/** Messages from Component -> Streamlit */
+var ComponentMessageType;
+(function (ComponentMessageType) {
+    // A component sends this message when it's ready to receive messages
+    // from Streamlit. Streamlit won't send any messages until it gets this.
+    // Data: { apiVersion: number }
+    ComponentMessageType["COMPONENT_READY"] = "streamlit:componentReady";
+    // The component has a new widget value. Send it back to Streamlit, which
+    // will then re-run the app.
+    // Data: { value: any }
+    ComponentMessageType["SET_COMPONENT_VALUE"] = "streamlit:setComponentValue";
+    // The component has a new height for its iframe.
+    // Data: { height: number }
+    ComponentMessageType["SET_FRAME_HEIGHT"] = "streamlit:setFrameHeight";
+})(ComponentMessageType || (ComponentMessageType = {}));
+/**
+ * Streamlit communication API.
+ *
+ * Components can send data to Streamlit via the functions defined here,
+ * and receive data from Streamlit via the `events` property.
+ */
+export var Streamlit = /** @class */ (function () {
+    function Streamlit() {
+    }
+    /**
+     * The Streamlit component API version we're targeting.
+     * There's currently only 1!
+     */
+    Streamlit.API_VERSION = 1;
+    Streamlit.RENDER_EVENT = "streamlit:render";
+    /** Dispatches events received from Streamlit. */
+    Streamlit.events = new EventTarget();
+    Streamlit.registeredMessageListener = false;
+    /**
+     * Tell Streamlit that the component is ready to start receiving data.
+     * Streamlit will defer emitting RENDER events until it receives the
+     * COMPONENT_READY message.
+     */
+    Streamlit.setComponentReady = function () {
+        if (!Streamlit.registeredMessageListener) {
+            // Register for message events if we haven't already
+            window.addEventListener("message", Streamlit.onMessageEvent);
+            Streamlit.registeredMessageListener = true;
+        }
+        Streamlit.sendBackMsg(ComponentMessageType.COMPONENT_READY, {
+            apiVersion: Streamlit.API_VERSION
+        });
+    };
+    /**
+     * Report the component's height to Streamlit.
+     * This should be called every time the component changes its DOM - that is,
+     * when it's first loaded, and any time it updates.
+     */
+    Streamlit.setFrameHeight = function (height) {
+        if (height === undefined) {
+            // `height` is optional. If undefined, it defaults to scrollHeight,
+            // which is the entire height of the element minus its border,
+            // scrollbar, and margin.
+            height = document.body.scrollHeight;
+        }
+        if (height === Streamlit.lastFrameHeight) {
+            // Don't bother updating if our height hasn't changed.
+            return;
+        }
+        Streamlit.lastFrameHeight = height;
+        Streamlit.sendBackMsg(ComponentMessageType.SET_FRAME_HEIGHT, { height: height });
+    };
+    /**
+     * Set the component's value. This value will be returned to the Python
+     * script, and the script will be re-run.
+     *
+     * For example:
+     *
+     * JavaScript:
+     * Streamlit.setComponentValue("ahoy!")
+     *
+     * Python:
+     * value = st.my_component(...)
+     * st.write(value) # -> "ahoy!"
+     *
+     * The value must be an ArrowTable, a typed array, an ArrayBuffer, or be
+     * serializable to JSON.
+     */
+    Streamlit.setComponentValue = function (value) {
+        var dataType;
+        if (value instanceof ArrowTable) {
+            dataType = "dataframe";
+            value = value.serialize();
+        }
+        else if (isTypedArray(value)) {
+            // All typed arrays get sent as Uint8Array, because that's what our
+            // protobuf library uses for the "bytes" field type.
+            dataType = "bytes";
+            value = new Uint8Array(value.buffer);
+        }
+        else if (value instanceof ArrayBuffer) {
+            dataType = "bytes";
+            value = new Uint8Array(value);
+        }
+        else {
+            dataType = "json";
+        }
+        Streamlit.sendBackMsg(ComponentMessageType.SET_COMPONENT_VALUE, {
+            value: value,
+            dataType: dataType
+        });
+    };
+    /** Receive a ForwardMsg from the Streamlit app */
+    Streamlit.onMessageEvent = function (event) {
+        var type = event.data["type"];
+        switch (type) {
+            case Streamlit.RENDER_EVENT:
+                Streamlit.onRenderMessage(event.data);
+                break;
+        }
+    };
+    /**
+     * Handle an untyped Streamlit render event and redispatch it as a
+     * StreamlitRenderEvent.
+     */
+    Streamlit.onRenderMessage = function (data) {
+        var args = data["args"];
+        if (args == null) {
+            console.error("Got null args in onRenderMessage. This should never happen");
+            args = {};
+        }
+        // Parse our dataframe arguments with arrow, and merge them into our args dict
+        var dataframeArgs = data["dfs"] && data["dfs"].length > 0
+            ? Streamlit.argsDataframeToObject(data["dfs"])
+            : {};
+        args = __assign(__assign({}, args), dataframeArgs);
+        var disabled = Boolean(data["disabled"]);
+        var theme = data["theme"];
+        if (theme) {
+            _injectTheme(theme);
+        }
+        // Dispatch a render event!
+        var eventData = { disabled: disabled, args: args, theme: theme };
+        var event = new CustomEvent(Streamlit.RENDER_EVENT, {
+            detail: eventData
+        });
+        Streamlit.events.dispatchEvent(event);
+    };
+    Streamlit.argsDataframeToObject = function (argsDataframe) {
+        var argsDataframeArrow = argsDataframe.map(function (_a) {
+            var key = _a.key, value = _a.value;
+            return [key, Streamlit.toArrowTable(value)];
+        });
+        return Object.fromEntries(argsDataframeArrow);
+    };
+    Streamlit.toArrowTable = function (df) {
+        var _a;
+        var data = (_a = df.data, _a.data), index = _a.index, columns = _a.columns, styler = _a.styler;
+        return new ArrowTable(data, index, columns, styler);
+    };
+    /** Post a message to the Streamlit app. */
+    Streamlit.sendBackMsg = function (type, data) {
+        window.parent.postMessage(__assign({ isStreamlitMessage: true, type: type }, data), "*");
+    };
+    return Streamlit;
+}());
+var _injectTheme = function (theme) {
+    var style = document.createElement("style");
+    document.head.appendChild(style);
+    style.innerHTML = "\n    :root {\n      --primary-color: ".concat(theme.primaryColor, ";\n      --background-color: ").concat(theme.backgroundColor, ";\n      --secondary-background-color: ").concat(theme.secondaryBackgroundColor, ";\n      --text-color: ").concat(theme.textColor, ";\n      --font: ").concat(theme.font, ";\n    }\n\n    body {\n      background-color: var(--background-color);\n      color: var(--text-color);\n    }\n  ");
+};
+/** True if the value is a TypedArray. */
+function isTypedArray(value) {
+    var isBigIntArray = false;
+    try {
+        isBigIntArray =
+            value instanceof BigInt64Array || value instanceof BigUint64Array;
+    }
+    catch (e) {
+        // Ignore cause Safari does not support this
+        // https://caniuse.com/mdn-javascript_builtins_bigint64array
+    }
+    return (value instanceof Int8Array ||
+        value instanceof Uint8Array ||
+        value instanceof Uint8ClampedArray ||
+        value instanceof Int16Array ||
+        value instanceof Uint16Array ||
+        value instanceof Int32Array ||
+        value instanceof Uint32Array ||
+        value instanceof Float32Array ||
+        value instanceof Float64Array ||
+        isBigIntArray);
+}
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/streamlit.test.d.ts b/igv_component/node_modules/streamlit-component-lib/dist/streamlit.test.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..a1a7b16fa69ccb2c8ee470c4ef39e0b478bbb084
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/streamlit.test.d.ts
@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export {};
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/streamlit.test.js b/igv_component/node_modules/streamlit-component-lib/dist/streamlit.test.js
new file mode 100644
index 0000000000000000000000000000000000000000..ab0c127cd7e3b7dc8eb8928e5756dcf3f7659c89
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/streamlit.test.js
@@ -0,0 +1,325 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+var __awaiter = (this && this.__awaiter) || function (thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+};
+var __generator = (this && this.__generator) || function (thisArg, body) {
+    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
+    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
+    function verb(n) { return function (v) { return step([n, v]); }; }
+    function step(op) {
+        if (f) throw new TypeError("Generator is already executing.");
+        while (g && (g = 0, op[0] && (_ = 0)), _) try {
+            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
+            if (y = 0, t) op = [op[0] & 2, t.value];
+            switch (op[0]) {
+                case 0: case 1: t = op; break;
+                case 4: _.label++; return { value: op[1], done: false };
+                case 5: _.label++; y = op[1]; op = [0]; continue;
+                case 7: op = _.ops.pop(); _.trys.pop(); continue;
+                default:
+                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
+                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
+                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
+                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
+                    if (t[2]) _.ops.pop();
+                    _.trys.pop(); continue;
+            }
+            op = body.call(thisArg, _);
+        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
+        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
+    }
+};
+import { Streamlit } from "./streamlit";
+import { ArrowTable } from "./ArrowTable";
+import { EXAMPLE_DF } from "./mock_data";
+import { tick } from "./test_utils";
+describe("Streamlit", function () {
+    test("setComponentReady register listeners only once", function () {
+        jest.spyOn(window, "addEventListener");
+        Streamlit.setComponentReady();
+        Streamlit.setComponentReady();
+        expect(jest.mocked(window.addEventListener).mock.calls).toHaveLength(1);
+    });
+    test("setComponentReady sends message to parent window", function () {
+        jest.spyOn(window.parent, "postMessage");
+        Streamlit.setComponentReady();
+        Streamlit.setComponentReady();
+        expect(jest.mocked(window.parent.postMessage).mock.calls).toEqual([
+            [
+                {
+                    apiVersion: 1,
+                    isStreamlitMessage: true,
+                    type: "streamlit:componentReady",
+                },
+                "*",
+            ],
+            [
+                {
+                    apiVersion: 1,
+                    isStreamlitMessage: true,
+                    type: "streamlit:componentReady",
+                },
+                "*",
+            ],
+        ]);
+    });
+    test("setFrameHeight sends height to parent window", function () {
+        jest.spyOn(window.parent, "postMessage");
+        Object.defineProperty(document.body, "scrollHeight", {
+            value: 42,
+            configurable: true,
+        });
+        Streamlit.setFrameHeight();
+        expect(jest.mocked(window.parent.postMessage).mock.calls[0]).toEqual([
+            {
+                height: 42,
+                isStreamlitMessage: true,
+                type: "streamlit:setFrameHeight",
+            },
+            "*",
+        ]);
+        // @ts-expect-error
+        delete document.body.scrollHeight;
+    });
+    test("setFrameHeight sends height to parent window only if changed", function () {
+        jest.spyOn(window.parent, "postMessage");
+        var scrollHeight = 42;
+        Object.defineProperty(document.body, "scrollHeight", {
+            get: function () { return scrollHeight; },
+            configurable: true,
+        });
+        Streamlit.setFrameHeight();
+        expect(jest.mocked(window.parent.postMessage).mock.calls).toHaveLength(1);
+        // Assert that the value is not sent again if height does not change
+        Streamlit.setFrameHeight();
+        expect(jest.mocked(window.parent.postMessage).mock.calls).toHaveLength(1);
+        // Ensure that the NEW value is sent again
+        scrollHeight = 420;
+        Streamlit.setFrameHeight();
+        expect(jest.mocked(window.parent.postMessage).mock.calls).toHaveLength(2);
+        expect(jest.mocked(window.parent.postMessage).mock.calls[1][0].height).toEqual(scrollHeight);
+    });
+    test("setComponentValue should support arrowTable", function () {
+        jest.spyOn(window.parent, "postMessage");
+        var table = new ArrowTable(EXAMPLE_DF.data, EXAMPLE_DF.index, EXAMPLE_DF.columns);
+        Streamlit.setComponentValue(table);
+        expect(jest.mocked(window.parent.postMessage).mock.calls).toHaveLength(1);
+        var parentMessage = jest.mocked(window.parent.postMessage).mock
+            .calls[0][0];
+        // Assert content of message except value. The value is too complex for
+        // a simple assertion, so we will validate it separately
+        var value = parentMessage.value;
+        delete parentMessage.value;
+        expect(parentMessage).toEqual({
+            dataType: "dataframe",
+            isStreamlitMessage: true,
+            type: "streamlit:setComponentValue",
+        });
+        // Assert that the table has the expected characteristic.
+        var newTable = new ArrowTable(value.data, value.index, value.columns);
+        expect(newTable.rows).toEqual(6);
+        expect(newTable.columns).toEqual(4);
+        expect(newTable.headerRows).toEqual(1);
+        expect(newTable.headerColumns).toEqual(1);
+    });
+    test("setComponentValue should support JSON values", function () {
+        jest.spyOn(window.parent, "postMessage");
+        Streamlit.setComponentValue("123");
+        expect(jest.mocked(window.parent.postMessage).mock.calls).toHaveLength(1);
+        expect(jest.mocked(window.parent.postMessage).mock.calls[0]).toEqual([
+            {
+                dataType: "json",
+                isStreamlitMessage: true,
+                type: "streamlit:setComponentValue",
+                value: "123",
+            },
+            "*",
+        ]);
+    });
+    test("setComponentValue should support array buffers", function () {
+        jest.spyOn(window.parent, "postMessage");
+        var value = new Uint8Array([1, 2]).buffer;
+        Streamlit.setComponentValue(value);
+        expect(jest.mocked(window.parent.postMessage).mock.calls).toHaveLength(1);
+        expect(jest.mocked(window.parent.postMessage).mock.calls[0]).toEqual([
+            {
+                dataType: "bytes",
+                isStreamlitMessage: true,
+                type: "streamlit:setComponentValue",
+                value: new Uint8Array([1, 2]),
+            },
+            "*",
+        ]);
+    });
+    test("setComponentValue should support typed arrays", function () {
+        jest.spyOn(window.parent, "postMessage");
+        var value = new Uint8Array([1, 2]);
+        Streamlit.setComponentValue(value);
+        expect(jest.mocked(window.parent.postMessage).mock.calls).toHaveLength(1);
+        expect(jest.mocked(window.parent.postMessage).mock.calls[0]).toEqual([
+            {
+                dataType: "bytes",
+                isStreamlitMessage: true,
+                type: "streamlit:setComponentValue",
+                value: new Uint8Array([1, 2]),
+            },
+            "*",
+        ]);
+    });
+    test("data from the parent frame is received and propagated as an event", function () { return __awaiter(void 0, void 0, void 0, function () {
+        var streamlitEventsListener, renderEvent;
+        return __generator(this, function (_a) {
+            switch (_a.label) {
+                case 0:
+                    streamlitEventsListener = jest.fn();
+                    Streamlit.events.addEventListener("streamlit:render", streamlitEventsListener);
+                    Streamlit.setComponentReady();
+                    window.postMessage({ type: "streamlit:render", args: {} }, "*");
+                    return [4 /*yield*/, tick()];
+                case 1:
+                    _a.sent();
+                    expect(streamlitEventsListener.mock.calls).toHaveLength(1);
+                    renderEvent = streamlitEventsListener.mock.calls[0][0];
+                    expect(renderEvent.detail).toEqual({
+                        args: {},
+                        disabled: false,
+                        theme: undefined,
+                    });
+                    return [2 /*return*/];
+            }
+        });
+    }); });
+    test("The parent frame can set the theme", function () { return __awaiter(void 0, void 0, void 0, function () {
+        var streamlitEventsListener, theme, renderEvent;
+        return __generator(this, function (_a) {
+            switch (_a.label) {
+                case 0:
+                    streamlitEventsListener = jest.fn();
+                    Streamlit.events.addEventListener("streamlit:render", streamlitEventsListener);
+                    Streamlit.setComponentReady();
+                    theme = {
+                        base: "red",
+                        primaryColor: "blue",
+                        backgroundColor: "green",
+                        secondaryBackgroundColor: "purple",
+                        textColor: "black",
+                        font: "Courier New",
+                    };
+                    window.postMessage({ type: "streamlit:render", args: {}, theme: theme }, "*");
+                    return [4 /*yield*/, tick()];
+                case 1:
+                    _a.sent();
+                    expect(streamlitEventsListener.mock.calls).toHaveLength(1);
+                    renderEvent = streamlitEventsListener.mock.calls[0][0];
+                    expect(renderEvent.detail.theme).toEqual(theme);
+                    expect(getComputedStyle(document.documentElement).getPropertyValue("--primary-color")).toEqual(theme.primaryColor);
+                    expect(getComputedStyle(document.documentElement).getPropertyValue("--background-color")).toEqual(theme.backgroundColor);
+                    expect(getComputedStyle(document.documentElement).getPropertyValue("--secondary-background-color")).toEqual(theme.secondaryBackgroundColor);
+                    expect(getComputedStyle(document.documentElement).getPropertyValue("--text-color")).toEqual(theme.textColor);
+                    return [2 /*return*/];
+            }
+        });
+    }); });
+    test("The parent frame can sent plain arguments", function () { return __awaiter(void 0, void 0, void 0, function () {
+        var streamlitEventsListener, renderEvent;
+        return __generator(this, function (_a) {
+            switch (_a.label) {
+                case 0:
+                    streamlitEventsListener = jest.fn();
+                    Streamlit.events.addEventListener("streamlit:render", streamlitEventsListener);
+                    Streamlit.setComponentReady();
+                    window.postMessage({
+                        type: "streamlit:render",
+                        args: { textValue: "smile", numberValue: 42 },
+                    }, "*");
+                    return [4 /*yield*/, tick()];
+                case 1:
+                    _a.sent();
+                    expect(streamlitEventsListener.mock.calls).toHaveLength(1);
+                    renderEvent = streamlitEventsListener.mock.calls[0][0];
+                    expect(renderEvent.detail.args).toEqual({
+                        numberValue: 42,
+                        textValue: "smile",
+                    });
+                    return [2 /*return*/];
+            }
+        });
+    }); });
+    test("The parent frame can sent dataframe", function () { return __awaiter(void 0, void 0, void 0, function () {
+        var streamlitEventsListener, renderEvent, arrowTable;
+        return __generator(this, function (_a) {
+            switch (_a.label) {
+                case 0:
+                    streamlitEventsListener = jest.fn();
+                    Streamlit.events.addEventListener("streamlit:render", streamlitEventsListener);
+                    Streamlit.setComponentReady();
+                    window.postMessage({
+                        type: "streamlit:render",
+                        args: {},
+                        dfs: [
+                            {
+                                key: "first-df",
+                                value: {
+                                    data: {
+                                        data: EXAMPLE_DF.data,
+                                        index: EXAMPLE_DF.index,
+                                        columns: EXAMPLE_DF.columns,
+                                    },
+                                },
+                            },
+                        ],
+                    }, "*");
+                    return [4 /*yield*/, tick()];
+                case 1:
+                    _a.sent();
+                    expect(streamlitEventsListener.mock.calls).toHaveLength(1);
+                    renderEvent = streamlitEventsListener.mock.calls[0][0];
+                    arrowTable = renderEvent.detail.args["first-df"];
+                    expect(arrowTable.rows).toEqual(6);
+                    expect(arrowTable.columns).toEqual(4);
+                    expect(arrowTable.headerRows).toEqual(1);
+                    expect(arrowTable.headerColumns).toEqual(1);
+                    return [2 /*return*/];
+            }
+        });
+    }); });
+    test("The parent frame can disable component", function () { return __awaiter(void 0, void 0, void 0, function () {
+        var streamlitEventsListener, renderEvent;
+        return __generator(this, function (_a) {
+            switch (_a.label) {
+                case 0:
+                    streamlitEventsListener = jest.fn();
+                    Streamlit.events.addEventListener("streamlit:render", streamlitEventsListener);
+                    Streamlit.setComponentReady();
+                    window.postMessage({ type: "streamlit:render", args: {}, disabled: true }, "*");
+                    return [4 /*yield*/, tick()];
+                case 1:
+                    _a.sent();
+                    expect(streamlitEventsListener.mock.calls).toHaveLength(1);
+                    renderEvent = streamlitEventsListener.mock.calls[0][0];
+                    expect(renderEvent.detail.disabled).toEqual(true);
+                    return [2 /*return*/];
+            }
+        });
+    }); });
+});
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/test_utils.d.ts b/igv_component/node_modules/streamlit-component-lib/dist/test_utils.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..5ca8066dc6e55e088b590f921679a0d7026cd54d
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/test_utils.d.ts
@@ -0,0 +1,16 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+export declare const tick: () => Promise<unknown>;
diff --git a/igv_component/node_modules/streamlit-component-lib/dist/test_utils.js b/igv_component/node_modules/streamlit-component-lib/dist/test_utils.js
new file mode 100644
index 0000000000000000000000000000000000000000..0a710f27580d1287cfbcaafef39a66d5e98dc4d1
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/dist/test_utils.js
@@ -0,0 +1,26 @@
+/**
+ * Copyright (c) Streamlit Inc. (2018-2022) Snowflake Inc. (2022)
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+// A function that doesn't do anything, but allows you to release
+// handlers so that pending events can be executed.
+//
+// MDN explains this as well:
+//
+// postMessage() schedules the MessageEvent to be dispatched only after all pending execution
+// contexts have finished. For example, if postMessage() is invoked in an event handler,
+// that event handler will run to completion, as will any remaining handlers for that same
+// event, before the MessageEvent is dispatched.
+// Source: https://developer.mozilla.org/en-US/docs/Web/API/Window/postMessage
+export var tick = function () { return new Promise(function (resolve) { return setTimeout(function () { return resolve(0); }, 0); }); };
diff --git a/igv_component/node_modules/streamlit-component-lib/package.json b/igv_component/node_modules/streamlit-component-lib/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..405233baa210d75ef49a48ca137a7b1a14504c30
--- /dev/null
+++ b/igv_component/node_modules/streamlit-component-lib/package.json
@@ -0,0 +1,54 @@
+{
+  "name": "streamlit-component-lib",
+  "version": "2.0.0",
+  "description": "Support code for Streamlit Components",
+  "main": "dist/index.js",
+  "types": "dist/index.d.ts",
+  "files": [
+    "dist"
+  ],
+  "scripts": {
+    "build": "tsc",
+    "test": "jest ./src"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/streamlit/streamlit.git"
+  },
+  "keywords": [
+    "streamlit"
+  ],
+  "author": "Streamlit",
+  "license": "Apache-2.0",
+  "bugs": {
+    "url": "https://github.com/streamlit/streamlit/issues"
+  },
+  "homepage": "https://github.com/streamlit/streamlit#readme",
+  "dependencies": {
+    "apache-arrow": "^11.0.0",
+    "hoist-non-react-statics": "^3.3.2",
+    "react": "^16.14.0",
+    "react-dom": "^16.14.0"
+  },
+  "devDependencies": {
+    "@babel/preset-env": "^7.21.4",
+    "@babel/preset-react": "^7.18.6",
+    "@babel/preset-typescript": "^7.21.4",
+    "@testing-library/jest-dom": "^5.16.5",
+    "@testing-library/react": "<13",
+    "@types/hoist-non-react-statics": "^3.3.1",
+    "@types/jest": "^29.5.0",
+    "@types/node": "^12.0.0",
+    "@types/react": "16.14.41",
+    "@types/react-dom": "^16.9.0",
+    "babel-jest": "^29.5.0",
+    "jest": "^29.5.0",
+    "jest-environment-jsdom": "^29.5.0",
+    "ts-node": "^10.9.1",
+    "typescript": "^5.0.4"
+  },
+  "resolutions": {
+    "@types/hoist-non-react-statics/**/@types/react": "16.14.41",
+    "@testing-library/react/**/@types/react": "16.14.41"
+  }
+}
diff --git a/igv_component/node_modules/supports-color/browser.js b/igv_component/node_modules/supports-color/browser.js
new file mode 100644
index 0000000000000000000000000000000000000000..62afa3a7425dc6a1eeafd1333afc15d429c5d10d
--- /dev/null
+++ b/igv_component/node_modules/supports-color/browser.js
@@ -0,0 +1,5 @@
+'use strict';
+module.exports = {
+	stdout: false,
+	stderr: false
+};
diff --git a/igv_component/node_modules/supports-color/index.js b/igv_component/node_modules/supports-color/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..1704131bdf6c8f1bddd360ed0ce42185590d2787
--- /dev/null
+++ b/igv_component/node_modules/supports-color/index.js
@@ -0,0 +1,131 @@
+'use strict';
+const os = require('os');
+const hasFlag = require('has-flag');
+
+const env = process.env;
+
+let forceColor;
+if (hasFlag('no-color') ||
+	hasFlag('no-colors') ||
+	hasFlag('color=false')) {
+	forceColor = false;
+} else if (hasFlag('color') ||
+	hasFlag('colors') ||
+	hasFlag('color=true') ||
+	hasFlag('color=always')) {
+	forceColor = true;
+}
+if ('FORCE_COLOR' in env) {
+	forceColor = env.FORCE_COLOR.length === 0 || parseInt(env.FORCE_COLOR, 10) !== 0;
+}
+
+function translateLevel(level) {
+	if (level === 0) {
+		return false;
+	}
+
+	return {
+		level,
+		hasBasic: true,
+		has256: level >= 2,
+		has16m: level >= 3
+	};
+}
+
+function supportsColor(stream) {
+	if (forceColor === false) {
+		return 0;
+	}
+
+	if (hasFlag('color=16m') ||
+		hasFlag('color=full') ||
+		hasFlag('color=truecolor')) {
+		return 3;
+	}
+
+	if (hasFlag('color=256')) {
+		return 2;
+	}
+
+	if (stream && !stream.isTTY && forceColor !== true) {
+		return 0;
+	}
+
+	const min = forceColor ? 1 : 0;
+
+	if (process.platform === 'win32') {
+		// Node.js 7.5.0 is the first version of Node.js to include a patch to
+		// libuv that enables 256 color output on Windows. Anything earlier and it
+		// won't work. However, here we target Node.js 8 at minimum as it is an LTS
+		// release, and Node.js 7 is not. Windows 10 build 10586 is the first Windows
+		// release that supports 256 colors. Windows 10 build 14931 is the first release
+		// that supports 16m/TrueColor.
+		const osRelease = os.release().split('.');
+		if (
+			Number(process.versions.node.split('.')[0]) >= 8 &&
+			Number(osRelease[0]) >= 10 &&
+			Number(osRelease[2]) >= 10586
+		) {
+			return Number(osRelease[2]) >= 14931 ? 3 : 2;
+		}
+
+		return 1;
+	}
+
+	if ('CI' in env) {
+		if (['TRAVIS', 'CIRCLECI', 'APPVEYOR', 'GITLAB_CI'].some(sign => sign in env) || env.CI_NAME === 'codeship') {
+			return 1;
+		}
+
+		return min;
+	}
+
+	if ('TEAMCITY_VERSION' in env) {
+		return /^(9\.(0*[1-9]\d*)\.|\d{2,}\.)/.test(env.TEAMCITY_VERSION) ? 1 : 0;
+	}
+
+	if (env.COLORTERM === 'truecolor') {
+		return 3;
+	}
+
+	if ('TERM_PROGRAM' in env) {
+		const version = parseInt((env.TERM_PROGRAM_VERSION || '').split('.')[0], 10);
+
+		switch (env.TERM_PROGRAM) {
+			case 'iTerm.app':
+				return version >= 3 ? 3 : 2;
+			case 'Apple_Terminal':
+				return 2;
+			// No default
+		}
+	}
+
+	if (/-256(color)?$/i.test(env.TERM)) {
+		return 2;
+	}
+
+	if (/^screen|^xterm|^vt100|^vt220|^rxvt|color|ansi|cygwin|linux/i.test(env.TERM)) {
+		return 1;
+	}
+
+	if ('COLORTERM' in env) {
+		return 1;
+	}
+
+	if (env.TERM === 'dumb') {
+		return min;
+	}
+
+	return min;
+}
+
+function getSupportLevel(stream) {
+	const level = supportsColor(stream);
+	return translateLevel(level);
+}
+
+module.exports = {
+	supportsColor: getSupportLevel,
+	stdout: getSupportLevel(process.stdout),
+	stderr: getSupportLevel(process.stderr)
+};
diff --git a/igv_component/node_modules/supports-color/license b/igv_component/node_modules/supports-color/license
new file mode 100644
index 0000000000000000000000000000000000000000..e7af2f77107d73046421ef56c4684cbfdd3c1e89
--- /dev/null
+++ b/igv_component/node_modules/supports-color/license
@@ -0,0 +1,9 @@
+MIT License
+
+Copyright (c) Sindre Sorhus <sindresorhus@gmail.com> (sindresorhus.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
diff --git a/igv_component/node_modules/supports-color/package.json b/igv_component/node_modules/supports-color/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..ad199f5cdb0436335d11d8650821e394bd276e56
--- /dev/null
+++ b/igv_component/node_modules/supports-color/package.json
@@ -0,0 +1,53 @@
+{
+	"name": "supports-color",
+	"version": "5.5.0",
+	"description": "Detect whether a terminal supports color",
+	"license": "MIT",
+	"repository": "chalk/supports-color",
+	"author": {
+		"name": "Sindre Sorhus",
+		"email": "sindresorhus@gmail.com",
+		"url": "sindresorhus.com"
+	},
+	"engines": {
+		"node": ">=4"
+	},
+	"scripts": {
+		"test": "xo && ava"
+	},
+	"files": [
+		"index.js",
+		"browser.js"
+	],
+	"keywords": [
+		"color",
+		"colour",
+		"colors",
+		"terminal",
+		"console",
+		"cli",
+		"ansi",
+		"styles",
+		"tty",
+		"rgb",
+		"256",
+		"shell",
+		"xterm",
+		"command-line",
+		"support",
+		"supports",
+		"capability",
+		"detect",
+		"truecolor",
+		"16m"
+	],
+	"dependencies": {
+		"has-flag": "^3.0.0"
+	},
+	"devDependencies": {
+		"ava": "^0.25.0",
+		"import-fresh": "^2.0.0",
+		"xo": "^0.20.0"
+	},
+	"browser": "browser.js"
+}
diff --git a/igv_component/node_modules/supports-color/readme.md b/igv_component/node_modules/supports-color/readme.md
new file mode 100644
index 0000000000000000000000000000000000000000..f6e40195730ae8c665bdd898cfe0442e9ac08105
--- /dev/null
+++ b/igv_component/node_modules/supports-color/readme.md
@@ -0,0 +1,66 @@
+# supports-color [![Build Status](https://travis-ci.org/chalk/supports-color.svg?branch=master)](https://travis-ci.org/chalk/supports-color)
+
+> Detect whether a terminal supports color
+
+
+## Install
+
+```
+$ npm install supports-color
+```
+
+
+## Usage
+
+```js
+const supportsColor = require('supports-color');
+
+if (supportsColor.stdout) {
+	console.log('Terminal stdout supports color');
+}
+
+if (supportsColor.stdout.has256) {
+	console.log('Terminal stdout supports 256 colors');
+}
+
+if (supportsColor.stderr.has16m) {
+	console.log('Terminal stderr supports 16 million colors (truecolor)');
+}
+```
+
+
+## API
+
+Returns an `Object` with a `stdout` and `stderr` property for testing either streams. Each property is an `Object`, or `false` if color is not supported.
+
+The `stdout`/`stderr` objects specifies a level of support for color through a `.level` property and a corresponding flag:
+
+- `.level = 1` and `.hasBasic = true`: Basic color support (16 colors)
+- `.level = 2` and `.has256 = true`: 256 color support
+- `.level = 3` and `.has16m = true`: Truecolor support (16 million colors)
+
+
+## Info
+
+It obeys the `--color` and `--no-color` CLI flags.
+
+Can be overridden by the user with the flags `--color` and `--no-color`. For situations where using `--color` is not possible, add the environment variable `FORCE_COLOR=1` to forcefully enable color or `FORCE_COLOR=0` to forcefully disable. The use of `FORCE_COLOR` overrides all other color support checks.
+
+Explicit 256/Truecolor mode can be enabled using the `--color=256` and `--color=16m` flags, respectively.
+
+
+## Related
+
+- [supports-color-cli](https://github.com/chalk/supports-color-cli) - CLI for this module
+- [chalk](https://github.com/chalk/chalk) - Terminal string styling done right
+
+
+## Maintainers
+
+- [Sindre Sorhus](https://github.com/sindresorhus)
+- [Josh Junon](https://github.com/qix-)
+
+
+## License
+
+MIT
diff --git a/igv_component/node_modules/table-layout/LICENSE b/igv_component/node_modules/table-layout/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..9d2d6dbc3c0c1868cb4070f7c0af7a496f2f01f0
--- /dev/null
+++ b/igv_component/node_modules/table-layout/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015-21 Lloyd Brookes <75pound@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/igv_component/node_modules/table-layout/README.hbs b/igv_component/node_modules/table-layout/README.hbs
new file mode 100644
index 0000000000000000000000000000000000000000..022e4eff0fbcbfca2cb59e6b0a1f2ba3bbd30975
--- /dev/null
+++ b/igv_component/node_modules/table-layout/README.hbs
@@ -0,0 +1,84 @@
+[![view on npm](https://badgen.net/npm/v/table-layout)](https://www.npmjs.org/package/table-layout)
+[![npm module downloads](https://badgen.net/npm/dt/table-layout)](https://www.npmjs.org/package/table-layout)
+[![Gihub repo dependents](https://badgen.net/github/dependents-repo/75lb/table-layout)](https://github.com/75lb/table-layout/network/dependents?dependent_type=REPOSITORY)
+[![Gihub package dependents](https://badgen.net/github/dependents-pkg/75lb/table-layout)](https://github.com/75lb/table-layout/network/dependents?dependent_type=PACKAGE)
+[![Build Status](https://travis-ci.org/75lb/table-layout.svg?branch=master)](https://travis-ci.org/75lb/table-layout)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/table-layout/badge.svg)](https://coveralls.io/github/75lb/table-layout)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+# table-layout
+
+Generates plain-text tables from JSON recordset input (array of objects). Useful for presenting text in column layout or data in table layout in text-based user interfaces. Also [available as a command-line tool](https://github.com/75lb/table-layout-cli).
+
+## Synopsis
+
+Where input looks like this:
+
+```json
+[
+  {
+    "number": 15134,
+    "title": "Coveralls has no source available ",
+    "login": "ndelangen",
+    "comments": 0
+  },
+  {
+    "number": 15133,
+    "title": "Fixing --preserve-symlinks. Enhancing node to exploit.",
+    "login": "phestermcs",
+    "comments": 0
+  },
+  {
+    "number": 15131,
+    "title": "Question - Confused about NPM's local installation philosophy",
+    "login": "the1mills",
+    "comments": 0
+  },
+  {
+    "number": 15130,
+    "title": "Question - global npm cache directory if user is root?",
+    "login": "ORESoftware",
+    "comments": 0
+  }
+]
+```
+
+This code...
+
+```js
+const Table = require('table-layout')
+const issues = require('./issues.json')
+const table = new Table(issues, { maxWidth: 60 })
+console.log(table.toString())
+```
+
+...produces this output:
+
+```
+ 15134  Coveralls has no source available   ndelangen     0
+ 15133  Fixing --preserve-symlinks.         phestermcs    0
+        Enhancing node to exploit.
+ 15131  Question - Confused about NPM's     the1mills     0
+        local installation philosophy
+ 15130  Question - global npm cache         ORESoftware   0
+        directory if user is root?
+ 15127  how to installa gulp fontfacegen    aramgreat     0
+        on Windows 10
+ 15097  Cannot install package from         mastertinner  3
+        tarball out of package.json entry
+        generated by npm
+ 15067  npm "SELF_SIGNED_CERT_IN_CHAIN"     LegendsLyfe   3
+        error when installing discord.js
+        with .log
+```
+
+## API Reference
+{{#module name="table-layout"}}
+{{>body~}}
+{{>member-index~}}
+{{>members~}}
+{{/module}}
+
+* * *
+
+&copy; 2015-21 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/table-layout/README.md b/igv_component/node_modules/table-layout/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..71b884d255703f8682e720e63269393ad51aa6dc
--- /dev/null
+++ b/igv_component/node_modules/table-layout/README.md
@@ -0,0 +1,154 @@
+[![view on npm](https://badgen.net/npm/v/table-layout)](https://www.npmjs.org/package/table-layout)
+[![npm module downloads](https://badgen.net/npm/dt/table-layout)](https://www.npmjs.org/package/table-layout)
+[![Gihub repo dependents](https://badgen.net/github/dependents-repo/75lb/table-layout)](https://github.com/75lb/table-layout/network/dependents?dependent_type=REPOSITORY)
+[![Gihub package dependents](https://badgen.net/github/dependents-pkg/75lb/table-layout)](https://github.com/75lb/table-layout/network/dependents?dependent_type=PACKAGE)
+[![Build Status](https://travis-ci.org/75lb/table-layout.svg?branch=master)](https://travis-ci.org/75lb/table-layout)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/table-layout/badge.svg)](https://coveralls.io/github/75lb/table-layout)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+# table-layout
+
+Generates plain-text tables from JSON recordset input (array of objects). Useful for presenting text in column layout or data in table layout in text-based user interfaces. Also [available as a command-line tool](https://github.com/75lb/table-layout-cli).
+
+## Synopsis
+
+Where input looks like this:
+
+```json
+[
+  {
+    "number": 15134,
+    "title": "Coveralls has no source available ",
+    "login": "ndelangen",
+    "comments": 0
+  },
+  {
+    "number": 15133,
+    "title": "Fixing --preserve-symlinks. Enhancing node to exploit.",
+    "login": "phestermcs",
+    "comments": 0
+  },
+  {
+    "number": 15131,
+    "title": "Question - Confused about NPM's local installation philosophy",
+    "login": "the1mills",
+    "comments": 0
+  },
+  {
+    "number": 15130,
+    "title": "Question - global npm cache directory if user is root?",
+    "login": "ORESoftware",
+    "comments": 0
+  }
+]
+```
+
+This code...
+
+```js
+const Table = require('table-layout')
+const issues = require('./issues.json')
+const table = new Table(issues, { maxWidth: 60 })
+console.log(table.toString())
+```
+
+...produces this output:
+
+```
+ 15134  Coveralls has no source available   ndelangen     0
+ 15133  Fixing --preserve-symlinks.         phestermcs    0
+        Enhancing node to exploit.
+ 15131  Question - Confused about NPM's     the1mills     0
+        local installation philosophy
+ 15130  Question - global npm cache         ORESoftware   0
+        directory if user is root?
+ 15127  how to installa gulp fontfacegen    aramgreat     0
+        on Windows 10
+ 15097  Cannot install package from         mastertinner  3
+        tarball out of package.json entry
+        generated by npm
+ 15067  npm "SELF_SIGNED_CERT_IN_CHAIN"     LegendsLyfe   3
+        error when installing discord.js
+        with .log
+```
+
+## API Reference
+
+* [table-layout](#module_table-layout)
+    * [Table](#exp_module_table-layout--Table) ⏏
+        * [new Table(data, [options])](#new_module_table-layout--Table_new)
+        * [table.renderLines()](#module_table-layout--Table+renderLines) ⇒ <code>Array.&lt;string&gt;</code>
+        * [table.toString()](#module_table-layout--Table+toString) ⇒ <code>string</code>
+        * [Table~columnOption](#module_table-layout--Table..columnOption)
+
+<a name="exp_module_table-layout--Table"></a>
+
+### Table ⏏
+Recordset data in (array of objects), text table out.
+
+**Kind**: Exported class  
+<a name="new_module_table-layout--Table_new"></a>
+
+#### new Table(data, [options])
+**Params**
+
+- data <code>Array.&lt;object&gt;</code> - input data
+- [options] <code>object</code> - optional settings
+    - [.maxWidth] <code>number</code> - maximum width of layout
+    - [.noWrap] <code>boolean</code> - disable wrapping on all columns
+    - [.noTrim] <code>boolean</code> - disable line-trimming
+    - [.break] <code>boolean</code> - enable word-breaking on all columns
+    - [.columns] [<code>columnOption</code>](#module_table-layout--Table..columnOption) - array of column-specific options
+    - [.ignoreEmptyColumns] <code>boolean</code> - if set, empty columns or columns containing only whitespace are not rendered.
+    - [.padding] <code>object</code> - Padding values to set on each column. Per-column overrides can be set in the `options.columns` array.
+        - [.left] <code>string</code> - Defaults to a single space.
+        - [.right] <code>string</code> - Defaults to a single space.
+
+**Example**  
+```js
+> Table = require('table-layout')
+> jsonData = [{
+  col1: 'Some text you wish to read in table layout',
+  col2: 'And some more text in column two. '
+}]
+> table = new Table(jsonData, { maxWidth: 30 })
+> console.log(table.toString())
+ Some text you  And some more
+ wish to read   text in
+ in table      column two.
+ layout
+```
+<a name="module_table-layout--Table+renderLines"></a>
+
+#### table.renderLines() ⇒ <code>Array.&lt;string&gt;</code>
+Identical to `.toString()` with the exception that the result will be an array of lines, rather than a single, multi-line string.
+
+**Kind**: instance method of [<code>Table</code>](#exp_module_table-layout--Table)  
+<a name="module_table-layout--Table+toString"></a>
+
+#### table.toString() ⇒ <code>string</code>
+Returns the input data as a text table.
+
+**Kind**: instance method of [<code>Table</code>](#exp_module_table-layout--Table)  
+<a name="module_table-layout--Table..columnOption"></a>
+
+#### Table~columnOption
+**Kind**: inner typedef of [<code>Table</code>](#exp_module_table-layout--Table)  
+**Properties**
+
+| Name | Type | Description |
+| --- | --- | --- |
+| name | <code>string</code> | column name, must match a property name in the input |
+| [width] | <code>number</code> | A specific column width. Supply either this or a min and/or max width. |
+| [minWidth] | <code>number</code> | column min width |
+| [maxWidth] | <code>number</code> | column max width |
+| [nowrap] | <code>boolean</code> | disable wrapping for this column |
+| [break] | <code>boolean</code> | enable word-breaking for this columns |
+| [padding] | <code>object</code> | padding options |
+| [padding.left] | <code>string</code> | a string to pad the left of each cell (default: `' '`) |
+| [padding.right] | <code>string</code> | a string to pad the right of each cell (default: `' '`) |
+
+
+* * *
+
+&copy; 2015-21 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/table-layout/index.js b/igv_component/node_modules/table-layout/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..7a94692ab97ad4cd86b81d0ac279dfe93ff5c0fc
--- /dev/null
+++ b/igv_component/node_modules/table-layout/index.js
@@ -0,0 +1,197 @@
+const os = require('os')
+
+/**
+ * @module table-layout
+ */
+
+/**
+ * Recordset data in (array of objects), text table out.
+ * @alias module:table-layout
+ * @example
+ * > Table = require('table-layout')
+ * > jsonData = [{
+ *   col1: 'Some text you wish to read in table layout',
+ *   col2: 'And some more text in column two. '
+ * }]
+ * > table = new Table(jsonData, { maxWidth: 30 })
+ * > console.log(table.toString())
+ *  Some text you  And some more
+ *  wish to read   text in
+ *  in table      column two.
+ *  layout
+ */
+class Table {
+  /**
+   * @param {object[]} - input data
+   * @param [options] {object} - optional settings
+   * @param [options.maxWidth] {number} - maximum width of layout
+   * @param [options.noWrap] {boolean} - disable wrapping on all columns
+   * @param [options.noTrim] {boolean} - disable line-trimming
+   * @param [options.break] {boolean} - enable word-breaking on all columns
+   * @param [options.columns] {module:table-layout~columnOption} - array of column-specific options
+   * @param [options.ignoreEmptyColumns] {boolean} - if set, empty columns or columns containing only whitespace are not rendered.
+   * @param [options.padding] {object} - Padding values to set on each column. Per-column overrides can be set in the `options.columns` array.
+   * @param [options.padding.left] {string} - Defaults to a single space.
+   * @param [options.padding.right] {string} - Defaults to a single space.
+   * @alias module:table-layout
+   */
+  constructor (data, options) {
+    let ttyWidth = (process && (process.stdout.columns || process.stderr.columns)) || 0
+
+    /* Windows quirk workaround  */
+    if (ttyWidth && os.platform() === 'win32') ttyWidth--
+
+    let defaults = {
+      padding: {
+        left: ' ',
+        right: ' '
+      },
+      maxWidth: ttyWidth || 80,
+      columns: []
+    }
+
+    const extend = require('deep-extend')
+    this.options = extend(defaults, options)
+    this.load(data)
+  }
+
+  load (data) {
+    const Rows = require('./lib/rows')
+    const Columns = require('./lib/columns')
+
+    let options = this.options
+
+    /* remove empty columns */
+    if (options.ignoreEmptyColumns) {
+      data = Rows.removeEmptyColumns(data)
+    }
+
+    this.columns = Columns.getColumns(data)
+    this.rows = new Rows(data, this.columns)
+
+    /* load default column properties from options */
+    this.columns.maxWidth = options.maxWidth
+    this.columns.list.forEach(column => {
+      if (options.padding) column.padding = options.padding
+      if (options.noWrap) column.noWrap = options.noWrap
+      if (options.break) {
+        column.break = options.break
+        column.contentWrappable = true
+      }
+    })
+
+    /* load column properties from options.columns */
+    options.columns.forEach(optionColumn => {
+      let column = this.columns.get(optionColumn.name)
+      if (column) {
+        if (optionColumn.padding) {
+          column.padding.left = optionColumn.padding.left
+          column.padding.right = optionColumn.padding.right
+        }
+        if (optionColumn.width) column.width = optionColumn.width
+        if (optionColumn.maxWidth) column.maxWidth = optionColumn.maxWidth
+        if (optionColumn.minWidth) column.minWidth = optionColumn.minWidth
+        if (optionColumn.noWrap) column.noWrap = optionColumn.noWrap
+        if (optionColumn.break) {
+          column.break = optionColumn.break
+          column.contentWrappable = true
+        }
+      }
+    })
+
+    this.columns.autoSize()
+    return this
+  }
+
+  getWrapped () {
+    const wrap = require('wordwrapjs')
+
+    this.columns.autoSize()
+    return this.rows.list.map(row => {
+      let line = []
+      row.forEach((cell, column) => {
+        if (column.noWrap) {
+          line.push(cell.value.split(/\r\n?|\n/))
+        } else {
+          line.push(wrap.lines(cell.value, {
+            width: column.wrappedContentWidth,
+            break: column.break,
+            noTrim: this.options.noTrim
+          }))
+        }
+      })
+      return line
+    })
+  }
+
+  getLines () {
+    var wrappedLines = this.getWrapped()
+    var lines = []
+    wrappedLines.forEach(wrapped => {
+      let mostLines = getLongestArray(wrapped)
+      for (let i = 0; i < mostLines; i++) {
+        let line = []
+        wrapped.forEach(cell => {
+          line.push(cell[i] || '')
+        })
+        lines.push(line)
+      }
+    })
+    return lines
+  }
+
+  /**
+   * Identical to `.toString()` with the exception that the result will be an array of lines, rather than a single, multi-line string.
+   * @returns {string[]}
+   */
+  renderLines () {
+    var lines = this.getLines()
+    return lines.map(line => {
+      return line.reduce((prev, cell, index) => {
+        let column = this.columns.list[index]
+        return prev + padCell(cell, column.padding, column.generatedWidth)
+      }, '')
+    })
+  }
+
+  /**
+   * Returns the input data as a text table.
+   * @returns {string}
+   */
+  toString () {
+    return this.renderLines().join(os.EOL) + os.EOL
+  }
+}
+
+/**
+ * Array of arrays in.. Returns the length of the longest one
+ * @returns {number}
+ * @private
+ */
+function getLongestArray (arrays) {
+  var lengths = arrays.map(array => array.length)
+  return Math.max.apply(null, lengths)
+}
+
+function padCell (cellValue, padding, width) {
+  const ansi = require('./lib/ansi')
+  var ansiLength = cellValue.length - ansi.remove(cellValue).length
+  cellValue = cellValue || ''
+  return (padding.left || '') +
+  cellValue.padEnd(width - padding.length() + ansiLength) + (padding.right || '')
+}
+
+/**
+ * @typedef module:table-layout~columnOption
+ * @property name {string} - column name, must match a property name in the input
+ * @property [width] {number} - A specific column width. Supply either this or a min and/or max width.
+ * @property [minWidth] {number} - column min width
+ * @property [maxWidth] {number} - column max width
+ * @property [nowrap] {boolean} - disable wrapping for this column
+ * @property [break] {boolean} - enable word-breaking for this columns
+ * @property [padding] {object} - padding options
+ * @property [padding.left] {string} - a string to pad the left of each cell (default: `' '`)
+ * @property [padding.right] {string} - a string to pad the right of each cell (default: `' '`)
+ */
+
+module.exports = Table
diff --git a/igv_component/node_modules/table-layout/lib/ansi.js b/igv_component/node_modules/table-layout/lib/ansi.js
new file mode 100644
index 0000000000000000000000000000000000000000..e98aa6d67ac778190e63f156a32263ad92f76488
--- /dev/null
+++ b/igv_component/node_modules/table-layout/lib/ansi.js
@@ -0,0 +1,15 @@
+const ansiEscapeSequence = /\u001b.*?m/g
+
+/**
+ * @module ansi
+ */
+exports.remove = remove
+exports.has = has
+
+function remove (input) {
+  return input.replace(ansiEscapeSequence, '')
+}
+
+function has (input) {
+  return ansiEscapeSequence.test(input)
+}
diff --git a/igv_component/node_modules/table-layout/lib/cell.js b/igv_component/node_modules/table-layout/lib/cell.js
new file mode 100644
index 0000000000000000000000000000000000000000..4351e8d67f8424f27638960abe8c98058f2a93c1
--- /dev/null
+++ b/igv_component/node_modules/table-layout/lib/cell.js
@@ -0,0 +1,28 @@
+const t = require('typical')
+
+const _value = new WeakMap()
+const _column = new WeakMap()
+
+class Cell {
+  constructor (value, column) {
+    this.value = value
+    _column.set(this, column)
+  }
+
+  set value (val) {
+    _value.set(this, val)
+  }
+
+  get value () {
+    let cellValue = _value.get(this)
+    if (typeof cellValue === 'function') cellValue = cellValue.call(_column.get(this))
+    if (cellValue === undefined) {
+      cellValue = ''
+    } else {
+      cellValue = String(cellValue)
+    }
+    return cellValue
+  }
+}
+
+module.exports = Cell
diff --git a/igv_component/node_modules/table-layout/lib/column.js b/igv_component/node_modules/table-layout/lib/column.js
new file mode 100644
index 0000000000000000000000000000000000000000..8defc889e82ab8efe610d891861192febf26f517
--- /dev/null
+++ b/igv_component/node_modules/table-layout/lib/column.js
@@ -0,0 +1,67 @@
+const t = require('typical')
+const Padding = require('./padding')
+
+/**
+ * @module column
+ */
+
+const _padding = new WeakMap()
+
+// setting any column property which is a factor of the width should trigger autoSize()
+
+/**
+ * Represents a table column
+ */
+class Column {
+  constructor (column) {
+    /**
+     * @type {string}
+     */
+    if (t.isDefined(column.name)) this.name = column.name
+    /**
+     * @type {number}
+     */
+    if (t.isDefined(column.width)) this.width = column.width
+    if (t.isDefined(column.maxWidth)) this.maxWidth = column.maxWidth
+    if (t.isDefined(column.minWidth)) this.minWidth = column.minWidth
+    if (t.isDefined(column.noWrap)) this.noWrap = column.noWrap
+    if (t.isDefined(column.break)) this.break = column.break
+    if (t.isDefined(column.contentWrappable)) this.contentWrappable = column.contentWrappable
+    if (t.isDefined(column.contentWidth)) this.contentWidth = column.contentWidth
+    if (t.isDefined(column.minContentWidth)) this.minContentWidth = column.minContentWidth
+    this.padding = column.padding || { left: ' ', right: ' ' }
+    this.generatedWidth = null
+  }
+
+  set padding (padding) {
+    _padding.set(this, new Padding(padding))
+  }
+  get padding () {
+    return _padding.get(this)
+  }
+
+  /**
+   * the width of the content (excluding padding) after being wrapped
+   */
+  get wrappedContentWidth () {
+    return Math.max(this.generatedWidth - this.padding.length(), 0)
+  }
+
+  isResizable () {
+    return !this.isFixed()
+  }
+
+  isFixed () {
+    return t.isDefined(this.width) || this.noWrap || !this.contentWrappable
+  }
+
+  generateWidth () {
+    this.generatedWidth = this.width || (this.contentWidth + this.padding.length())
+  }
+
+  generateMinWidth () {
+    this.minWidth = this.minContentWidth + this.padding.length()
+  }
+}
+
+module.exports = Column
diff --git a/igv_component/node_modules/table-layout/lib/columns.js b/igv_component/node_modules/table-layout/lib/columns.js
new file mode 100644
index 0000000000000000000000000000000000000000..5135ffda52523dfa11d096a2dd1c77e019a54f3b
--- /dev/null
+++ b/igv_component/node_modules/table-layout/lib/columns.js
@@ -0,0 +1,156 @@
+const t = require('typical')
+const arrayify = require('array-back')
+const Column = require('./column')
+const wrap = require('wordwrapjs')
+const Cell = require('./cell')
+const ansi = require('./ansi')
+
+const _maxWidth = new WeakMap()
+
+/**
+ * @module columns
+ */
+
+class Columns {
+  constructor (columns) {
+    this.list = []
+    arrayify(columns).forEach(this.add.bind(this))
+  }
+
+  /**
+   * sum of all generatedWidth fields
+   * @return {number}
+   */
+  totalWidth () {
+    return this.list.length
+      ? this.list.map(col => col.generatedWidth).reduce((a, b) => a + b)
+      : 0
+  }
+
+  totalFixedWidth () {
+    return this.getFixed()
+      .map(col => col.generatedWidth)
+      .reduce((a, b) => a + b, 0)
+  }
+
+  get (columnName) {
+    return this.list.find(column => column.name === columnName)
+  }
+
+  getResizable () {
+    return this.list.filter(column => column.isResizable())
+  }
+
+  getFixed () {
+    return this.list.filter(column => column.isFixed())
+  }
+
+  add (column) {
+    const col = column instanceof Column ? column : new Column(column)
+    this.list.push(col)
+    return col
+  }
+
+  set maxWidth (val) {
+    _maxWidth.set(this, val)
+  }
+
+  /**
+   * sets `generatedWidth` for each column
+   * @chainable
+   */
+  autoSize () {
+    const maxWidth = _maxWidth.get(this)
+
+    /* size */
+    this.list.forEach(column => {
+      column.generateWidth()
+      column.generateMinWidth()
+    })
+
+    /* adjust if user set a min or maxWidth */
+    this.list.forEach(column => {
+      if (t.isDefined(column.maxWidth) && column.generatedWidth > column.maxWidth) {
+        column.generatedWidth = column.maxWidth
+      }
+
+      if (t.isDefined(column.minWidth) && column.generatedWidth < column.minWidth) {
+        column.generatedWidth = column.minWidth
+      }
+    })
+
+    const width = {
+      total: this.totalWidth(),
+      view: maxWidth,
+      diff: this.totalWidth() - maxWidth,
+      totalFixed: this.totalFixedWidth(),
+      totalResizable: Math.max(maxWidth - this.totalFixedWidth(), 0)
+    }
+
+    /* adjust if short of space */
+    if (width.diff > 0) {
+      /* share the available space between resizeable columns */
+      let resizableColumns = this.getResizable()
+      resizableColumns.forEach(column => {
+        column.generatedWidth = Math.floor(width.totalResizable / resizableColumns.length)
+      })
+
+      /* at this point, the generatedWidth should never end up bigger than the contentWidth */
+      const grownColumns = this.list.filter(column => column.generatedWidth > column.contentWidth)
+      const shrunkenColumns = this.list.filter(column => column.generatedWidth < column.contentWidth)
+      let salvagedSpace = 0
+      grownColumns.forEach(column => {
+        const currentGeneratedWidth = column.generatedWidth
+        column.generateWidth()
+        salvagedSpace += currentGeneratedWidth - column.generatedWidth
+      })
+      shrunkenColumns.forEach(column => {
+        column.generatedWidth += Math.floor(salvagedSpace / shrunkenColumns.length)
+      })
+
+    /* if, after autosizing, we still don't fit within maxWidth then give up */
+    }
+
+    return this
+  }
+
+  /**
+   * Factory method returning all distinct columns from input
+   * @param  {object[]} - input recordset
+   * @return {module:columns}
+   */
+  static getColumns (rows) {
+    var columns = new Columns()
+    arrayify(rows).forEach(row => {
+      for (let columnName in row) {
+        let column = columns.get(columnName)
+        if (!column) {
+          column = columns.add({ name: columnName, contentWidth: 0, minContentWidth: 0 })
+        }
+        let cell = new Cell(row[columnName], column)
+        let cellValue = cell.value
+        if (ansi.has(cellValue)) {
+          cellValue = ansi.remove(cellValue)
+        }
+
+        if (cellValue.length > column.contentWidth) column.contentWidth = cellValue.length
+
+        let longestWord = getLongestWord(cellValue)
+        if (longestWord > column.minContentWidth) {
+          column.minContentWidth = longestWord
+        }
+        if (!column.contentWrappable) column.contentWrappable = wrap.isWrappable(cellValue)
+      }
+    })
+    return columns
+  }
+}
+
+function getLongestWord (line) {
+  const words = wrap.getChunks(line)
+  return words.reduce((max, word) => {
+    return Math.max(word.length, max)
+  }, 0)
+}
+
+module.exports = Columns
diff --git a/igv_component/node_modules/table-layout/lib/padding.js b/igv_component/node_modules/table-layout/lib/padding.js
new file mode 100644
index 0000000000000000000000000000000000000000..4af79109fbffa59e82e3a0a409f4a01678061a09
--- /dev/null
+++ b/igv_component/node_modules/table-layout/lib/padding.js
@@ -0,0 +1,14 @@
+class Padding {
+  constructor (padding) {
+    this.left = padding.left
+    this.right = padding.right
+  }
+  length () {
+    return this.left.length + this.right.length
+  }
+}
+
+/**
+@module padding
+*/
+module.exports = Padding
diff --git a/igv_component/node_modules/table-layout/lib/rows.js b/igv_component/node_modules/table-layout/lib/rows.js
new file mode 100644
index 0000000000000000000000000000000000000000..3972f07c3d51ddc394d590c74213ac430f0c6387
--- /dev/null
+++ b/igv_component/node_modules/table-layout/lib/rows.js
@@ -0,0 +1,52 @@
+const arrayify = require('array-back')
+const Cell = require('./cell')
+const t = require('typical')
+
+/**
+ *
+ */
+class Rows {
+  constructor (rows, columns) {
+    this.list = []
+    this.load(rows, columns)
+  }
+
+  load (rows, columns) {
+    arrayify(rows).forEach(row => {
+      this.list.push(new Map(objectToIterable(row, columns)))
+    })
+  }
+
+  static removeEmptyColumns (data) {
+    const distinctColumnNames = data.reduce((columnNames, row) => {
+      Object.keys(row).forEach(key => {
+        if (columnNames.indexOf(key) === -1) columnNames.push(key)
+      })
+      return columnNames
+    }, [])
+
+    const emptyColumns = distinctColumnNames.filter(columnName => {
+      const hasValue = data.some(row => {
+        const value = row[columnName]
+        return (t.isDefined(value) && typeof value !== 'string') || (typeof value === 'string' && /\S+/.test(value))
+      })
+      return !hasValue
+    })
+
+    return data.map(row => {
+      emptyColumns.forEach(emptyCol => delete row[emptyCol])
+      return row
+    })
+  }
+}
+
+function objectToIterable (row, columns) {
+  return columns.list.map(column => {
+    return [ column, new Cell(row[column.name], column) ]
+  })
+}
+
+/**
+ * @module rows
+ */
+module.exports = Rows
diff --git a/igv_component/node_modules/table-layout/node_modules/array-back/LICENSE b/igv_component/node_modules/table-layout/node_modules/array-back/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..203018f1e665160f2a3a51ff1fe91e9717af0b78
--- /dev/null
+++ b/igv_component/node_modules/table-layout/node_modules/array-back/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015-19 Lloyd Brookes <75pound@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/igv_component/node_modules/table-layout/node_modules/array-back/README.hbs b/igv_component/node_modules/table-layout/node_modules/array-back/README.hbs
new file mode 100644
index 0000000000000000000000000000000000000000..7d84bd250b9769a604c996d6ef1e8f055e762591
--- /dev/null
+++ b/igv_component/node_modules/table-layout/node_modules/array-back/README.hbs
@@ -0,0 +1,40 @@
+[![view on npm](https://img.shields.io/npm/v/array-back.svg)](https://www.npmjs.org/package/array-back)
+[![npm module downloads](https://img.shields.io/npm/dt/array-back.svg)](https://www.npmjs.org/package/array-back)
+[![Build Status](https://travis-ci.org/75lb/array-back.svg?branch=master)](https://travis-ci.org/75lb/array-back)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/array-back/badge.svg?branch=master)](https://coveralls.io/github/75lb/array-back?branch=master)
+[![Dependency Status](https://badgen.net/david/dep/75lb/array-back)](https://david-dm.org/75lb/array-back)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+{{>main}}
+
+### Load anywhere
+
+This library is compatible with Node.js, the Web and any style of module loader. It can be loaded anywhere, natively without transpilation.
+
+Node.js:
+
+```js
+const arrayify = require('array-back')
+```
+
+Within Node.js with ECMAScript Module support enabled:
+
+```js
+import arrayify from 'array-back'
+```
+
+Within an modern browser ECMAScript Module:
+
+```js
+import arrayify from './node_modules/array-back/index.mjs'
+```
+
+Old browser (adds `window.arrayBack`):
+
+```html
+<script nomodule src="./node_modules/array-back/dist/index.js"></script>
+```
+
+* * *
+
+&copy; 2015-19 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/75lb/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/table-layout/node_modules/array-back/README.md b/igv_component/node_modules/table-layout/node_modules/array-back/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..431339e10279f7bb648e45ea92dadc75e2cb0d27
--- /dev/null
+++ b/igv_component/node_modules/table-layout/node_modules/array-back/README.md
@@ -0,0 +1,81 @@
+[![view on npm](https://img.shields.io/npm/v/array-back.svg)](https://www.npmjs.org/package/array-back)
+[![npm module downloads](https://img.shields.io/npm/dt/array-back.svg)](https://www.npmjs.org/package/array-back)
+[![Build Status](https://travis-ci.org/75lb/array-back.svg?branch=master)](https://travis-ci.org/75lb/array-back)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/array-back/badge.svg?branch=master)](https://coveralls.io/github/75lb/array-back?branch=master)
+[![Dependency Status](https://badgen.net/david/dep/75lb/array-back)](https://david-dm.org/75lb/array-back)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+<a name="module_array-back"></a>
+
+## array-back
+Takes any input and guarantees an array back.
+
+- Converts array-like objects (e.g. `arguments`, `Set`) to a real array.
+- Converts `undefined` to an empty array.
+- Converts any another other, singular value (including `null`, objects and iterables other than `Set`) into an array containing that value.
+- Ignores input which is already an array.
+
+**Example**  
+```js
+> const arrayify = require('array-back')
+
+> arrayify(undefined)
+[]
+
+> arrayify(null)
+[ null ]
+
+> arrayify(0)
+[ 0 ]
+
+> arrayify([ 1, 2 ])
+[ 1, 2 ]
+
+> arrayify(new Set([ 1, 2 ]))
+[ 1, 2 ]
+
+> function f(){ return arrayify(arguments); }
+> f(1,2,3)
+[ 1, 2, 3 ]
+```
+<a name="exp_module_array-back--arrayify"></a>
+
+### arrayify(input) ⇒ <code>Array</code> ⏏
+**Kind**: Exported function  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | The input value to convert to an array |
+
+
+### Load anywhere
+
+This library is compatible with Node.js, the Web and any style of module loader. It can be loaded anywhere, natively without transpilation.
+
+Node.js:
+
+```js
+const arrayify = require('array-back')
+```
+
+Within Node.js with ECMAScript Module support enabled:
+
+```js
+import arrayify from 'array-back'
+```
+
+Within an modern browser ECMAScript Module:
+
+```js
+import arrayify from './node_modules/array-back/index.mjs'
+```
+
+Old browser (adds `window.arrayBack`):
+
+```html
+<script nomodule src="./node_modules/array-back/dist/index.js"></script>
+```
+
+* * *
+
+&copy; 2015-19 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/75lb/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/table-layout/node_modules/array-back/dist/index.js b/igv_component/node_modules/table-layout/node_modules/array-back/dist/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..3b97b84c92f3af5f87e55f43021bbf8ab49eb86d
--- /dev/null
+++ b/igv_component/node_modules/table-layout/node_modules/array-back/dist/index.js
@@ -0,0 +1,70 @@
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global = global || self, global.arrayBack = factory());
+}(this, (function () { 'use strict';
+
+  /**
+   * Takes any input and guarantees an array back.
+   *
+   * - Converts array-like objects (e.g. `arguments`, `Set`) to a real array.
+   * - Converts `undefined` to an empty array.
+   * - Converts any another other, singular value (including `null`, objects and iterables other than `Set`) into an array containing that value.
+   * - Ignores input which is already an array.
+   *
+   * @module array-back
+   * @example
+   * > const arrayify = require('array-back')
+   *
+   * > arrayify(undefined)
+   * []
+   *
+   * > arrayify(null)
+   * [ null ]
+   *
+   * > arrayify(0)
+   * [ 0 ]
+   *
+   * > arrayify([ 1, 2 ])
+   * [ 1, 2 ]
+   *
+   * > arrayify(new Set([ 1, 2 ]))
+   * [ 1, 2 ]
+   *
+   * > function f(){ return arrayify(arguments); }
+   * > f(1,2,3)
+   * [ 1, 2, 3 ]
+   */
+
+  function isObject (input) {
+    return typeof input === 'object' && input !== null
+  }
+
+  function isArrayLike (input) {
+    return isObject(input) && typeof input.length === 'number'
+  }
+
+  /**
+   * @param {*} - The input value to convert to an array
+   * @returns {Array}
+   * @alias module:array-back
+   */
+  function arrayify (input) {
+    if (Array.isArray(input)) {
+      return input
+    }
+
+    if (input === undefined) {
+      return []
+    }
+
+    if (isArrayLike(input) || input instanceof Set) {
+      return Array.from(input)
+    }
+
+    return [input]
+  }
+
+  return arrayify;
+
+})));
diff --git a/igv_component/node_modules/table-layout/node_modules/array-back/index.mjs b/igv_component/node_modules/table-layout/node_modules/array-back/index.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..1090399e71097900dddd9c89e398f093a9136ada
--- /dev/null
+++ b/igv_component/node_modules/table-layout/node_modules/array-back/index.mjs
@@ -0,0 +1,62 @@
+/**
+ * Takes any input and guarantees an array back.
+ *
+ * - Converts array-like objects (e.g. `arguments`, `Set`) to a real array.
+ * - Converts `undefined` to an empty array.
+ * - Converts any another other, singular value (including `null`, objects and iterables other than `Set`) into an array containing that value.
+ * - Ignores input which is already an array.
+ *
+ * @module array-back
+ * @example
+ * > const arrayify = require('array-back')
+ *
+ * > arrayify(undefined)
+ * []
+ *
+ * > arrayify(null)
+ * [ null ]
+ *
+ * > arrayify(0)
+ * [ 0 ]
+ *
+ * > arrayify([ 1, 2 ])
+ * [ 1, 2 ]
+ *
+ * > arrayify(new Set([ 1, 2 ]))
+ * [ 1, 2 ]
+ *
+ * > function f(){ return arrayify(arguments); }
+ * > f(1,2,3)
+ * [ 1, 2, 3 ]
+ */
+
+function isObject (input) {
+  return typeof input === 'object' && input !== null
+}
+
+function isArrayLike (input) {
+  return isObject(input) && typeof input.length === 'number'
+}
+
+/**
+ * @param {*} - The input value to convert to an array
+ * @returns {Array}
+ * @alias module:array-back
+ */
+function arrayify (input) {
+  if (Array.isArray(input)) {
+    return input
+  }
+
+  if (input === undefined) {
+    return []
+  }
+
+  if (isArrayLike(input) || input instanceof Set) {
+    return Array.from(input)
+  }
+
+  return [input]
+}
+
+export default arrayify
diff --git a/igv_component/node_modules/table-layout/node_modules/array-back/package.json b/igv_component/node_modules/table-layout/node_modules/array-back/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..a677a103f1126f57dc99c79ee86b5c095347e9da
--- /dev/null
+++ b/igv_component/node_modules/table-layout/node_modules/array-back/package.json
@@ -0,0 +1,46 @@
+{
+  "name": "array-back",
+  "author": "Lloyd Brookes <75pound@gmail.com>",
+  "version": "4.0.2",
+  "description": "Guarantees an array back",
+  "repository": "https://github.com/75lb/array-back.git",
+  "license": "MIT",
+  "main": "dist/index.js",
+  "keywords": [
+    "to",
+    "convert",
+    "return",
+    "array",
+    "arrayify"
+  ],
+  "engines": {
+    "node": ">=8"
+  },
+  "files": [
+    "index.mjs",
+    "dist/index.js"
+  ],
+  "scripts": {
+    "test": "npm run dist && npm run test:esm && npm run test:web",
+    "test:esm": "esm-runner test.mjs",
+    "test:web": "web-runner test.mjs",
+    "docs": "jsdoc2md -t README.hbs index.mjs -c jsdoc.conf > README.md",
+    "dist": "rollup -f umd -n arrayBack -o dist/index.js index.mjs",
+    "cover": "c8 npm run test:esm && c8 report --reporter=text-lcov | coveralls"
+  },
+  "dependencies": {},
+  "devDependencies": {
+    "@test-runner/web": "^0.2.1",
+    "c8": "^6.0.1",
+    "coveralls": "^3.0.7",
+    "esm-runner": "^0.2.0",
+    "isomorphic-assert": "^0.1.1",
+    "jsdoc-to-markdown": "^5.0.2",
+    "rollup": "^1.26.5"
+  },
+  "standard": {
+    "ignore": [
+      "dist"
+    ]
+  }
+}
diff --git a/igv_component/node_modules/table-layout/node_modules/typical/LICENSE b/igv_component/node_modules/table-layout/node_modules/typical/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..700561a5e23e90694da01df6f8f09ee295bf9977
--- /dev/null
+++ b/igv_component/node_modules/table-layout/node_modules/typical/LICENSE
@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2014-19 Lloyd Brookes <75pound@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
diff --git a/igv_component/node_modules/table-layout/node_modules/typical/README.hbs b/igv_component/node_modules/table-layout/node_modules/typical/README.hbs
new file mode 100644
index 0000000000000000000000000000000000000000..bb092a1f3da6af5ad9c7f7a407b69b0f822d740d
--- /dev/null
+++ b/igv_component/node_modules/table-layout/node_modules/typical/README.hbs
@@ -0,0 +1,40 @@
+[![view on npm](http://img.shields.io/npm/v/typical.svg)](https://www.npmjs.org/package/typical)
+[![npm module downloads](http://img.shields.io/npm/dt/typical.svg)](https://www.npmjs.org/package/typical)
+[![Build Status](https://travis-ci.org/75lb/typical.svg?branch=master)](https://travis-ci.org/75lb/typical)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/typical/badge.svg?branch=master)](https://coveralls.io/github/75lb/typical?branch=master)
+[![Dependency Status](https://badgen.net/david/dep/75lb/typical)](https://david-dm.org/75lb/typical)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+{{>main}}
+
+## Load anywhere
+
+This library is compatible with Node.js, the Web and any style of module loader. It can be loaded anywhere, natively without transpilation.
+
+Node.js:
+
+```js
+const typical = require('typical')
+```
+
+Within Node.js with ECMAScript Module support enabled:
+
+```js
+import typical from 'typical'
+```
+
+Within a modern browser ECMAScript Module:
+
+```js
+import typical from './node_modules/typical/index.mjs'
+```
+
+Old browser (adds `window.typical`):
+
+```html
+<script nomodule src="./node_modules/typical/dist/index.js"></script>
+```
+
+* * *
+
+&copy; 2014-19 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/table-layout/node_modules/typical/README.md b/igv_component/node_modules/table-layout/node_modules/typical/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..6e3d513ceb7aea75148c8e5786fc4defbdd2839c
--- /dev/null
+++ b/igv_component/node_modules/table-layout/node_modules/typical/README.md
@@ -0,0 +1,302 @@
+[![view on npm](http://img.shields.io/npm/v/typical.svg)](https://www.npmjs.org/package/typical)
+[![npm module downloads](http://img.shields.io/npm/dt/typical.svg)](https://www.npmjs.org/package/typical)
+[![Build Status](https://travis-ci.org/75lb/typical.svg?branch=master)](https://travis-ci.org/75lb/typical)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/typical/badge.svg?branch=master)](https://coveralls.io/github/75lb/typical?branch=master)
+[![Dependency Status](https://badgen.net/david/dep/75lb/typical)](https://david-dm.org/75lb/typical)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+<a name="module_typical"></a>
+
+## typical
+Isomorphic, functional type-checking for Javascript.
+
+**Example**  
+```js
+const t = require('typical')
+const allDefined = array.every(t.isDefined)
+```
+
+* [typical](#module_typical)
+    * [.isNumber(n)](#module_typical.isNumber) ⇒ <code>boolean</code>
+    * [.isPlainObject(input)](#module_typical.isPlainObject) ⇒ <code>boolean</code>
+    * [.isArrayLike(input)](#module_typical.isArrayLike) ⇒ <code>boolean</code>
+    * [.isObject(input)](#module_typical.isObject) ⇒ <code>boolean</code>
+    * [.isDefined(input)](#module_typical.isDefined) ⇒ <code>boolean</code>
+    * [.isUndefined(input)](#module_typical.isUndefined) ⇒ <code>boolean</code>
+    * [.isNull(input)](#module_typical.isNull) ⇒ <code>boolean</code>
+    * [.isDefinedValue(input)](#module_typical.isDefinedValue) ⇒ <code>boolean</code>
+    * [.isClass(input)](#module_typical.isClass) ⇒ <code>boolean</code>
+    * [.isPrimitive(input)](#module_typical.isPrimitive) ⇒ <code>boolean</code>
+    * [.isPromise(input)](#module_typical.isPromise) ⇒ <code>boolean</code>
+    * [.isIterable(input)](#module_typical.isIterable) ⇒ <code>boolean</code>
+    * [.isString(input)](#module_typical.isString) ⇒ <code>boolean</code>
+    * [.isFunction(input)](#module_typical.isFunction) ⇒ <code>boolean</code>
+
+<a name="module_typical.isNumber"></a>
+
+### t.isNumber(n) ⇒ <code>boolean</code>
+Returns true if input is a number. It is a more reasonable alternative to `typeof n` which returns `number` for `NaN` and `Infinity`.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| n | <code>\*</code> | the input to test |
+
+**Example**  
+```js
+> t.isNumber(0)
+true
+> t.isNumber(1)
+true
+> t.isNumber(1.1)
+true
+> t.isNumber(0xff)
+true
+> t.isNumber(0644)
+true
+> t.isNumber(6.2e5)
+true
+> t.isNumber(NaN)
+false
+> t.isNumber(Infinity)
+false
+```
+<a name="module_typical.isPlainObject"></a>
+
+### t.isPlainObject(input) ⇒ <code>boolean</code>
+A plain object is a simple object literal, it is not an instance of a class. Returns true if the input `typeof` is `object` and directly decends from `Object`.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+**Example**  
+```js
+> t.isPlainObject({ something: 'one' })
+true
+> t.isPlainObject(new Date())
+false
+> t.isPlainObject([ 0, 1 ])
+false
+> t.isPlainObject(/test/)
+false
+> t.isPlainObject(1)
+false
+> t.isPlainObject('one')
+false
+> t.isPlainObject(null)
+false
+> t.isPlainObject((function * () {})())
+false
+> t.isPlainObject(function * () {})
+false
+```
+<a name="module_typical.isArrayLike"></a>
+
+### t.isArrayLike(input) ⇒ <code>boolean</code>
+An array-like value has all the properties of an array yet is not an array instance. An example is the `arguments` object. Returns `true`` if the input value is an object, not `null`` and has a `length` property set with a numeric value.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+**Example**  
+```js
+function sum(x, y){
+  console.log(t.isArrayLike(arguments))
+  // prints `true`
+}
+```
+<a name="module_typical.isObject"></a>
+
+### t.isObject(input) ⇒ <code>boolean</code>
+Returns true if the typeof input is `'object'` but not null.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isDefined"></a>
+
+### t.isDefined(input) ⇒ <code>boolean</code>
+Returns true if the input value is defined.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isUndefined"></a>
+
+### t.isUndefined(input) ⇒ <code>boolean</code>
+Returns true if the input value is undefined.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isNull"></a>
+
+### t.isNull(input) ⇒ <code>boolean</code>
+Returns true if the input value is null.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isDefinedValue"></a>
+
+### t.isDefinedValue(input) ⇒ <code>boolean</code>
+Returns true if the input value is not one of `undefined`, `null`, or `NaN`.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isClass"></a>
+
+### t.isClass(input) ⇒ <code>boolean</code>
+Returns true if the input value is an ES2015 `class`.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isPrimitive"></a>
+
+### t.isPrimitive(input) ⇒ <code>boolean</code>
+Returns true if the input is a string, number, symbol, boolean, null or undefined value.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isPromise"></a>
+
+### t.isPromise(input) ⇒ <code>boolean</code>
+Returns true if the input is a Promise.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isIterable"></a>
+
+### t.isIterable(input) ⇒ <code>boolean</code>
+Returns true if the input is an iterable (`Map`, `Set`, `Array`, Generator etc.).
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+**Example**  
+```js
+> t.isIterable('string')
+true
+> t.isIterable(new Map())
+true
+> t.isIterable([])
+true
+> t.isIterable((function * () {})())
+true
+> t.isIterable(Promise.resolve())
+false
+> t.isIterable(Promise)
+false
+> t.isIterable(true)
+false
+> t.isIterable({})
+false
+> t.isIterable(0)
+false
+> t.isIterable(1.1)
+false
+> t.isIterable(NaN)
+false
+> t.isIterable(Infinity)
+false
+> t.isIterable(function () {})
+false
+> t.isIterable(Date)
+false
+> t.isIterable()
+false
+> t.isIterable({ then: function () {} })
+false
+```
+<a name="module_typical.isString"></a>
+
+### t.isString(input) ⇒ <code>boolean</code>
+Returns true if the input value is a string. The equivalent of `typeof input === 'string'` for use in funcitonal contexts.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isFunction"></a>
+
+### t.isFunction(input) ⇒ <code>boolean</code>
+Returns true if the input value is a function. The equivalent of `typeof input === 'function'` for use in funcitonal contexts.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+
+## Load anywhere
+
+This library is compatible with Node.js, the Web and any style of module loader. It can be loaded anywhere, natively without transpilation.
+
+Node.js:
+
+```js
+const typical = require('typical')
+```
+
+Within Node.js with ECMAScript Module support enabled:
+
+```js
+import typical from 'typical'
+```
+
+Within a modern browser ECMAScript Module:
+
+```js
+import typical from './node_modules/typical/index.mjs'
+```
+
+Old browser (adds `window.typical`):
+
+```html
+<script nomodule src="./node_modules/typical/dist/index.js"></script>
+```
+
+* * *
+
+&copy; 2014-19 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/table-layout/node_modules/typical/dist/index.js b/igv_component/node_modules/table-layout/node_modules/typical/dist/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..ed8b168638511d4db203730c6a592e2aa1f622a3
--- /dev/null
+++ b/igv_component/node_modules/table-layout/node_modules/typical/dist/index.js
@@ -0,0 +1,295 @@
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+  (global = global || self, factory(global.typical = {}));
+}(this, function (exports) { 'use strict';
+
+  /**
+   * Isomorphic, functional type-checking for Javascript.
+   * @module typical
+   * @typicalname t
+   * @example
+   * const t = require('typical')
+   * const allDefined = array.every(t.isDefined)
+   */
+
+  /**
+   * Returns true if input is a number. It is a more reasonable alternative to `typeof n` which returns `number` for `NaN` and `Infinity`.
+   *
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   * @example
+   * > t.isNumber(0)
+   * true
+   * > t.isNumber(1)
+   * true
+   * > t.isNumber(1.1)
+   * true
+   * > t.isNumber(0xff)
+   * true
+   * > t.isNumber(0644)
+   * true
+   * > t.isNumber(6.2e5)
+   * true
+   * > t.isNumber(NaN)
+   * false
+   * > t.isNumber(Infinity)
+   * false
+   */
+  function isNumber (n) {
+    return !isNaN(parseFloat(n)) && isFinite(n)
+  }
+
+  /**
+   * A plain object is a simple object literal, it is not an instance of a class. Returns true if the input `typeof` is `object` and directly decends from `Object`.
+   *
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   * @example
+   * > t.isPlainObject({ something: 'one' })
+   * true
+   * > t.isPlainObject(new Date())
+   * false
+   * > t.isPlainObject([ 0, 1 ])
+   * false
+   * > t.isPlainObject(/test/)
+   * false
+   * > t.isPlainObject(1)
+   * false
+   * > t.isPlainObject('one')
+   * false
+   * > t.isPlainObject(null)
+   * false
+   * > t.isPlainObject((function * () {})())
+   * false
+   * > t.isPlainObject(function * () {})
+   * false
+   */
+  function isPlainObject (input) {
+    return input !== null && typeof input === 'object' && input.constructor === Object
+  }
+
+  /**
+   * An array-like value has all the properties of an array yet is not an array instance. An example is the `arguments` object. Returns `true`` if the input value is an object, not `null`` and has a `length` property set with a numeric value.
+   *
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   * @example
+   * function sum(x, y){
+   *   console.log(t.isArrayLike(arguments))
+   *   // prints `true`
+   * }
+   */
+  function isArrayLike (input) {
+    return isObject(input) && typeof input.length === 'number'
+  }
+
+  /**
+   * Returns true if the typeof input is `'object'` but not null.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isObject (input) {
+    return typeof input === 'object' && input !== null
+  }
+
+  /**
+   * Returns true if the input value is defined.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isDefined (input) {
+    return typeof input !== 'undefined'
+  }
+
+  /**
+   * Returns true if the input value is undefined.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isUndefined (input) {
+    return !isDefined(input)
+  }
+
+  /**
+   * Returns true if the input value is null.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isNull (input) {
+   return input === null
+  }
+
+  /**
+   * Returns true if the input value is both defined and not null.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isDefinedValue (input) {
+   return isDefined(input) && !isNull(input) && !Number.isNaN(input)
+  }
+
+  /**
+   * Returns true if the input value is an ES2015 `class`.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isClass (input) {
+    if (typeof input === 'function') {
+      return /^class /.test(Function.prototype.toString.call(input))
+    } else {
+      return false
+    }
+  }
+
+  /**
+   * Returns true if the input is a string, number, symbol, boolean, null or undefined value.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isPrimitive (input) {
+    if (input === null) return true
+    switch (typeof input) {
+      case 'string':
+      case 'number':
+      case 'symbol':
+      case 'undefined':
+      case 'boolean':
+        return true
+      default:
+        return false
+    }
+  }
+
+  /**
+   * Returns true if the input is a Promise.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isPromise (input) {
+    if (input) {
+      const isPromise = isDefined(Promise) && input instanceof Promise;
+      const isThenable = input.then && typeof input.then === 'function';
+      return !!(isPromise || isThenable)
+    } else {
+      return false
+    }
+  }
+
+  /**
+   * Returns true if the input is an iterable (`Map`, `Set`, `Array`, Generator etc.).
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   * @example
+   * > t.isIterable('string')
+   * true
+   * > t.isIterable(new Map())
+   * true
+   * > t.isIterable([])
+   * true
+   * > t.isIterable((function * () {})())
+   * true
+   * > t.isIterable(Promise.resolve())
+   * false
+   * > t.isIterable(Promise)
+   * false
+   * > t.isIterable(true)
+   * false
+   * > t.isIterable({})
+   * false
+   * > t.isIterable(0)
+   * false
+   * > t.isIterable(1.1)
+   * false
+   * > t.isIterable(NaN)
+   * false
+   * > t.isIterable(Infinity)
+   * false
+   * > t.isIterable(function () {})
+   * false
+   * > t.isIterable(Date)
+   * false
+   * > t.isIterable()
+   * false
+   * > t.isIterable({ then: function () {} })
+   * false
+   */
+  function isIterable (input) {
+    if (input === null || !isDefined(input)) {
+      return false
+    } else {
+      return (
+        typeof input[Symbol.iterator] === 'function' ||
+        typeof input[Symbol.asyncIterator] === 'function'
+      )
+    }
+  }
+
+  /**
+   * Returns true if the input value is a string. The equivalent of `typeof input === 'string'` for use in funcitonal contexts.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isString (input) {
+    return typeof input === 'string'
+  }
+
+  /**
+   * Returns true if the input value is a function. The equivalent of `typeof input === 'function'` for use in funcitonal contexts.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isFunction (input) {
+    return typeof input === 'function'
+  }
+
+  var index = {
+    isNumber,
+    isPlainObject,
+    isArrayLike,
+    isObject,
+    isDefined,
+    isUndefined,
+    isNull,
+    isDefinedValue,
+    isClass,
+    isPrimitive,
+    isPromise,
+    isIterable,
+    isString,
+    isFunction
+  };
+
+  exports.default = index;
+  exports.isArrayLike = isArrayLike;
+  exports.isClass = isClass;
+  exports.isDefined = isDefined;
+  exports.isDefinedValue = isDefinedValue;
+  exports.isFunction = isFunction;
+  exports.isIterable = isIterable;
+  exports.isNull = isNull;
+  exports.isNumber = isNumber;
+  exports.isObject = isObject;
+  exports.isPlainObject = isPlainObject;
+  exports.isPrimitive = isPrimitive;
+  exports.isPromise = isPromise;
+  exports.isString = isString;
+  exports.isUndefined = isUndefined;
+
+  Object.defineProperty(exports, '__esModule', { value: true });
+
+}));
diff --git a/igv_component/node_modules/table-layout/node_modules/typical/index.mjs b/igv_component/node_modules/table-layout/node_modules/typical/index.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..d3468a97fb50bc919fa70b7ff0d6b5e5ba384216
--- /dev/null
+++ b/igv_component/node_modules/table-layout/node_modules/typical/index.mjs
@@ -0,0 +1,269 @@
+/**
+ * Isomorphic, functional type-checking for Javascript.
+ * @module typical
+ * @typicalname t
+ * @example
+ * const t = require('typical')
+ * const allDefined = array.every(t.isDefined)
+ */
+
+/**
+ * Returns true if input is a number. It is a more reasonable alternative to `typeof n` which returns `number` for `NaN` and `Infinity`.
+ *
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isNumber(0)
+ * true
+ * > t.isNumber(1)
+ * true
+ * > t.isNumber(1.1)
+ * true
+ * > t.isNumber(0xff)
+ * true
+ * > t.isNumber(0644)
+ * true
+ * > t.isNumber(6.2e5)
+ * true
+ * > t.isNumber(NaN)
+ * false
+ * > t.isNumber(Infinity)
+ * false
+ */
+export function isNumber (n) {
+  return !isNaN(parseFloat(n)) && isFinite(n)
+}
+
+/**
+ * A plain object is a simple object literal, it is not an instance of a class. Returns true if the input `typeof` is `object` and directly decends from `Object`.
+ *
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isPlainObject({ something: 'one' })
+ * true
+ * > t.isPlainObject(new Date())
+ * false
+ * > t.isPlainObject([ 0, 1 ])
+ * false
+ * > t.isPlainObject(/test/)
+ * false
+ * > t.isPlainObject(1)
+ * false
+ * > t.isPlainObject('one')
+ * false
+ * > t.isPlainObject(null)
+ * false
+ * > t.isPlainObject((function * () {})())
+ * false
+ * > t.isPlainObject(function * () {})
+ * false
+ */
+export function isPlainObject (input) {
+  return input !== null && typeof input === 'object' && input.constructor === Object
+}
+
+/**
+ * An array-like value has all the properties of an array yet is not an array instance. An example is the `arguments` object. Returns `true`` if the input value is an object, not `null`` and has a `length` property set with a numeric value.
+ *
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * function sum(x, y){
+ *   console.log(t.isArrayLike(arguments))
+ *   // prints `true`
+ * }
+ */
+export function isArrayLike (input) {
+  return isObject(input) && typeof input.length === 'number'
+}
+
+/**
+ * Returns true if the typeof input is `'object'` but not null.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isObject (input) {
+  return typeof input === 'object' && input !== null
+}
+
+/**
+ * Returns true if the input value is defined.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isDefined (input) {
+  return typeof input !== 'undefined'
+}
+
+/**
+ * Returns true if the input value is undefined.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isUndefined (input) {
+  return !isDefined(input)
+}
+
+/**
+ * Returns true if the input value is null.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isNull (input) {
+ return input === null
+}
+
+/**
+ * Returns true if the input value is not one of `undefined`, `null`, or `NaN`.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isDefinedValue (input) {
+ return isDefined(input) && !isNull(input) && !Number.isNaN(input)
+}
+
+/**
+ * Returns true if the input value is an ES2015 `class`.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isClass (input) {
+  if (typeof input === 'function') {
+    return /^class /.test(Function.prototype.toString.call(input))
+  } else {
+    return false
+  }
+}
+
+/**
+ * Returns true if the input is a string, number, symbol, boolean, null or undefined value.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isPrimitive (input) {
+  if (input === null) return true
+  switch (typeof input) {
+    case 'string':
+    case 'number':
+    case 'symbol':
+    case 'undefined':
+    case 'boolean':
+      return true
+    default:
+      return false
+  }
+}
+
+/**
+ * Returns true if the input is a Promise.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isPromise (input) {
+  if (input) {
+    const isPromise = isDefined(Promise) && input instanceof Promise
+    const isThenable = input.then && typeof input.then === 'function'
+    return !!(isPromise || isThenable)
+  } else {
+    return false
+  }
+}
+
+/**
+ * Returns true if the input is an iterable (`Map`, `Set`, `Array`, Generator etc.).
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isIterable('string')
+ * true
+ * > t.isIterable(new Map())
+ * true
+ * > t.isIterable([])
+ * true
+ * > t.isIterable((function * () {})())
+ * true
+ * > t.isIterable(Promise.resolve())
+ * false
+ * > t.isIterable(Promise)
+ * false
+ * > t.isIterable(true)
+ * false
+ * > t.isIterable({})
+ * false
+ * > t.isIterable(0)
+ * false
+ * > t.isIterable(1.1)
+ * false
+ * > t.isIterable(NaN)
+ * false
+ * > t.isIterable(Infinity)
+ * false
+ * > t.isIterable(function () {})
+ * false
+ * > t.isIterable(Date)
+ * false
+ * > t.isIterable()
+ * false
+ * > t.isIterable({ then: function () {} })
+ * false
+ */
+export function isIterable (input) {
+  if (input === null || !isDefined(input)) {
+    return false
+  } else {
+    return (
+      typeof input[Symbol.iterator] === 'function' ||
+      typeof input[Symbol.asyncIterator] === 'function'
+    )
+  }
+}
+
+/**
+ * Returns true if the input value is a string. The equivalent of `typeof input === 'string'` for use in funcitonal contexts.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isString (input) {
+  return typeof input === 'string'
+}
+
+/**
+ * Returns true if the input value is a function. The equivalent of `typeof input === 'function'` for use in funcitonal contexts.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isFunction (input) {
+  return typeof input === 'function'
+}
+
+export default {
+  isNumber,
+  isPlainObject,
+  isArrayLike,
+  isObject,
+  isDefined,
+  isUndefined,
+  isNull,
+  isDefinedValue,
+  isClass,
+  isPrimitive,
+  isPromise,
+  isIterable,
+  isString,
+  isFunction
+}
diff --git a/igv_component/node_modules/table-layout/node_modules/typical/package.json b/igv_component/node_modules/table-layout/node_modules/typical/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..d664f1bd14c678bbde674c8e4e7a5efc6ab77b6e
--- /dev/null
+++ b/igv_component/node_modules/table-layout/node_modules/typical/package.json
@@ -0,0 +1,63 @@
+{
+  "name": "typical",
+  "author": "Lloyd Brookes <75pound@gmail.com>",
+  "version": "5.2.0",
+  "description": "Isomorphic, functional type-checking for Javascript",
+  "repository": "https://github.com/75lb/typical",
+  "license": "MIT",
+  "main": "dist/index.js",
+  "keywords": [
+    "type",
+    "checking",
+    "check",
+    "value",
+    "valid",
+    "is",
+    "number",
+    "object",
+    "plainobject",
+    "array",
+    "like",
+    "defined",
+    "string",
+    "boolean",
+    "function",
+    "promise",
+    "iterable",
+    "class",
+    "primitive",
+    "isstring",
+    "isclass",
+    "isiterable",
+    "isdefined",
+    "isobject",
+    "isomorphic"
+  ],
+  "engines": {
+    "node": ">=8"
+  },
+  "scripts": {
+    "test": "npm run dist && npm run test:js && npm run test:esm",
+    "test:all": "npm run test:js && npm run test:esm && npm run test:web",
+    "test:js": "rollup test/*.mjs -f cjs -d tmp/test -e assert && test-runner tmp/test/test*.js",
+    "test:esm": "esm-runner test/*.mjs",
+    "test:web": "web-runner test/test.mjs",
+    "test:v8": "rollup test/test.mjs test/test-default.mjs -f cjs -d tmp/testv8 && test-runner tmp/testv8/test*.js",
+    "dist": "rollup index.mjs -f umd -n typical -o dist/index.js --exports named",
+    "docs": "jsdoc2md -c jsdoc.conf -t README.hbs index.mjs > README.md; echo",
+    "cover": "nyc npm test && nyc report --reporter=text-lcov | coveralls"
+  },
+  "devDependencies": {
+    "coveralls": "^3.0.7",
+    "esm-runner": "^0.1.5",
+    "jsdoc-to-markdown": "^5.0.2",
+    "nyc": "^14.1.1",
+    "rollup": "^1.25.1",
+    "test-object-model": "^0.4.4",
+    "test-runner": "^0.6.0"
+  },
+  "files": [
+    "index.mjs",
+    "dist/index.js"
+  ]
+}
diff --git a/igv_component/node_modules/table-layout/package.json b/igv_component/node_modules/table-layout/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..efd03e1e90ebef8a1507c770f1d2f7732c380966
--- /dev/null
+++ b/igv_component/node_modules/table-layout/package.json
@@ -0,0 +1,41 @@
+{
+  "name": "table-layout",
+  "author": "Lloyd Brookes <75pound@gmail.com>",
+  "version": "1.0.2",
+  "description": "Stylable text tables, handling ansi colour. Useful for console output.",
+  "repository": "https://github.com/75lb/table-layout.git",
+  "license": "MIT",
+  "keywords": [
+    "wrap",
+    "terminal",
+    "data",
+    "columns",
+    "format",
+    "json",
+    "command line"
+  ],
+  "engines": {
+    "node": ">=8.0.0"
+  },
+  "scripts": {
+    "test": "test-runner test/*.js",
+    "docs": "jsdoc2md -t README.hbs index.js -p list --member-index-format list > README.md; echo",
+    "cover": "nyc npm test && nyc report --reporter=text-lcov | coveralls"
+  },
+  "dependencies": {
+    "array-back": "^4.0.1",
+    "deep-extend": "~0.6.0",
+    "typical": "^5.2.0",
+    "wordwrapjs": "^4.0.0"
+  },
+  "devDependencies": {
+    "coveralls": "^3.1.0",
+    "jsdoc-to-markdown": "^7.0.0",
+    "nyc": "^15.1.0",
+    "test-runner": "^0.6.3"
+  },
+  "files": [
+    "index.js",
+    "lib/*.js"
+  ]
+}
diff --git a/igv_component/node_modules/tslib/CopyrightNotice.txt b/igv_component/node_modules/tslib/CopyrightNotice.txt
new file mode 100644
index 0000000000000000000000000000000000000000..5d7d2d9ceef9ad9ea38818cc7d2392f1a9b7af10
--- /dev/null
+++ b/igv_component/node_modules/tslib/CopyrightNotice.txt
@@ -0,0 +1,15 @@
+/******************************************************************************
+Copyright (c) Microsoft Corporation.
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.
+***************************************************************************** */
+
diff --git a/igv_component/node_modules/tslib/LICENSE.txt b/igv_component/node_modules/tslib/LICENSE.txt
new file mode 100644
index 0000000000000000000000000000000000000000..fa7d1bdf94d541b1754132c52ec3868d1fe4cdaf
--- /dev/null
+++ b/igv_component/node_modules/tslib/LICENSE.txt
@@ -0,0 +1,12 @@
+Copyright (c) Microsoft Corporation.
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.
\ No newline at end of file
diff --git a/igv_component/node_modules/tslib/README.md b/igv_component/node_modules/tslib/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..14b9a83dcce1d653dfa798ae622dfc7c0c6ebd41
--- /dev/null
+++ b/igv_component/node_modules/tslib/README.md
@@ -0,0 +1,164 @@
+# tslib
+
+This is a runtime library for [TypeScript](https://www.typescriptlang.org/) that contains all of the TypeScript helper functions.
+
+This library is primarily used by the `--importHelpers` flag in TypeScript.
+When using `--importHelpers`, a module that uses helper functions like `__extends` and `__assign` in the following emitted file:
+
+```ts
+var __assign = (this && this.__assign) || Object.assign || function(t) {
+    for (var s, i = 1, n = arguments.length; i < n; i++) {
+        s = arguments[i];
+        for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p))
+            t[p] = s[p];
+    }
+    return t;
+};
+exports.x = {};
+exports.y = __assign({}, exports.x);
+
+```
+
+will instead be emitted as something like the following:
+
+```ts
+var tslib_1 = require("tslib");
+exports.x = {};
+exports.y = tslib_1.__assign({}, exports.x);
+```
+
+Because this can avoid duplicate declarations of things like `__extends`, `__assign`, etc., this means delivering users smaller files on average, as well as less runtime overhead.
+For optimized bundles with TypeScript, you should absolutely consider using `tslib` and `--importHelpers`.
+
+# Installing
+
+For the latest stable version, run:
+
+## npm
+
+```sh
+# TypeScript 3.9.2 or later
+npm install tslib
+
+# TypeScript 3.8.4 or earlier
+npm install tslib@^1
+
+# TypeScript 2.3.2 or earlier
+npm install tslib@1.6.1
+```
+
+## yarn
+
+```sh
+# TypeScript 3.9.2 or later
+yarn add tslib
+
+# TypeScript 3.8.4 or earlier
+yarn add tslib@^1
+
+# TypeScript 2.3.2 or earlier
+yarn add tslib@1.6.1
+```
+
+## bower
+
+```sh
+# TypeScript 3.9.2 or later
+bower install tslib
+
+# TypeScript 3.8.4 or earlier
+bower install tslib@^1
+
+# TypeScript 2.3.2 or earlier
+bower install tslib@1.6.1
+```
+
+## JSPM
+
+```sh
+# TypeScript 3.9.2 or later
+jspm install tslib
+
+# TypeScript 3.8.4 or earlier
+jspm install tslib@^1
+
+# TypeScript 2.3.2 or earlier
+jspm install tslib@1.6.1
+```
+
+# Usage
+
+Set the `importHelpers` compiler option on the command line:
+
+```
+tsc --importHelpers file.ts
+```
+
+or in your tsconfig.json:
+
+```json
+{
+    "compilerOptions": {
+        "importHelpers": true
+    }
+}
+```
+
+#### For bower and JSPM users
+
+You will need to add a `paths` mapping for `tslib`, e.g. For Bower users:
+
+```json
+{
+    "compilerOptions": {
+        "module": "amd",
+        "importHelpers": true,
+        "baseUrl": "./",
+        "paths": {
+            "tslib" : ["bower_components/tslib/tslib.d.ts"]
+        }
+    }
+}
+```
+
+For JSPM users:
+
+```json
+{
+    "compilerOptions": {
+        "module": "system",
+        "importHelpers": true,
+        "baseUrl": "./",
+        "paths": {
+            "tslib" : ["jspm_packages/npm/tslib@2.x.y/tslib.d.ts"]
+        }
+    }
+}
+```
+
+## Deployment
+
+- Choose your new version number
+- Set it in `package.json` and `bower.json`
+- Create a tag: `git tag [version]`
+- Push the tag: `git push --tags`
+- Create a [release in GitHub](https://github.com/microsoft/tslib/releases)
+- Run the [publish to npm](https://github.com/microsoft/tslib/actions?query=workflow%3A%22Publish+to+NPM%22) workflow
+
+Done.
+
+# Contribute
+
+There are many ways to [contribute](https://github.com/Microsoft/TypeScript/blob/master/CONTRIBUTING.md) to TypeScript.
+
+* [Submit bugs](https://github.com/Microsoft/TypeScript/issues) and help us verify fixes as they are checked in.
+* Review the [source code changes](https://github.com/Microsoft/TypeScript/pulls).
+* Engage with other TypeScript users and developers on [StackOverflow](http://stackoverflow.com/questions/tagged/typescript).
+* Join the [#typescript](http://twitter.com/#!/search/realtime/%23typescript) discussion on Twitter.
+* [Contribute bug fixes](https://github.com/Microsoft/TypeScript/blob/master/CONTRIBUTING.md).
+
+# Documentation
+
+* [Quick tutorial](http://www.typescriptlang.org/Tutorial)
+* [Programming handbook](http://www.typescriptlang.org/Handbook)
+* [Homepage](http://www.typescriptlang.org/)
diff --git a/igv_component/node_modules/tslib/SECURITY.md b/igv_component/node_modules/tslib/SECURITY.md
new file mode 100644
index 0000000000000000000000000000000000000000..869fdfe2b246991a053fab9cfec1bed3ab532ab1
--- /dev/null
+++ b/igv_component/node_modules/tslib/SECURITY.md
@@ -0,0 +1,41 @@
+<!-- BEGIN MICROSOFT SECURITY.MD V0.0.7 BLOCK -->
+
+## Security
+
+Microsoft takes the security of our software products and services seriously, which includes all source code repositories managed through our GitHub organizations, which include [Microsoft](https://github.com/Microsoft), [Azure](https://github.com/Azure), [DotNet](https://github.com/dotnet), [AspNet](https://github.com/aspnet), [Xamarin](https://github.com/xamarin), and [our GitHub organizations](https://opensource.microsoft.com/).
+
+If you believe you have found a security vulnerability in any Microsoft-owned repository that meets [Microsoft's definition of a security vulnerability](https://aka.ms/opensource/security/definition), please report it to us as described below.
+
+## Reporting Security Issues
+
+**Please do not report security vulnerabilities through public GitHub issues.**
+
+Instead, please report them to the Microsoft Security Response Center (MSRC) at [https://msrc.microsoft.com/create-report](https://aka.ms/opensource/security/create-report).
+
+If you prefer to submit without logging in, send email to [secure@microsoft.com](mailto:secure@microsoft.com).  If possible, encrypt your message with our PGP key; please download it from the [Microsoft Security Response Center PGP Key page](https://aka.ms/opensource/security/pgpkey).
+
+You should receive a response within 24 hours. If for some reason you do not, please follow up via email to ensure we received your original message. Additional information can be found at [microsoft.com/msrc](https://aka.ms/opensource/security/msrc). 
+
+Please include the requested information listed below (as much as you can provide) to help us better understand the nature and scope of the possible issue:
+
+  * Type of issue (e.g. buffer overflow, SQL injection, cross-site scripting, etc.)
+  * Full paths of source file(s) related to the manifestation of the issue
+  * The location of the affected source code (tag/branch/commit or direct URL)
+  * Any special configuration required to reproduce the issue
+  * Step-by-step instructions to reproduce the issue
+  * Proof-of-concept or exploit code (if possible)
+  * Impact of the issue, including how an attacker might exploit the issue
+
+This information will help us triage your report more quickly.
+
+If you are reporting for a bug bounty, more complete reports can contribute to a higher bounty award. Please visit our [Microsoft Bug Bounty Program](https://aka.ms/opensource/security/bounty) page for more details about our active programs.
+
+## Preferred Languages
+
+We prefer all communications to be in English.
+
+## Policy
+
+Microsoft follows the principle of [Coordinated Vulnerability Disclosure](https://aka.ms/opensource/security/cvd).
+
+<!-- END MICROSOFT SECURITY.MD BLOCK -->
diff --git a/igv_component/node_modules/tslib/modules/index.d.ts b/igv_component/node_modules/tslib/modules/index.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..0fedae881e90c72426faeb49caee45a0afb0474d
--- /dev/null
+++ b/igv_component/node_modules/tslib/modules/index.d.ts
@@ -0,0 +1,37 @@
+// Note: named reexports are used instead of `export *` because
+// TypeScript itself doesn't resolve the `export *` when checking
+// if a particular helper exists.
+export {
+  __extends,
+  __assign,
+  __rest,
+  __decorate,
+  __param,
+  __esDecorate,
+  __runInitializers,
+  __propKey,
+  __setFunctionName,
+  __metadata,
+  __awaiter,
+  __generator,
+  __exportStar,
+  __values,
+  __read,
+  __spread,
+  __spreadArrays,
+  __spreadArray,
+  __await,
+  __asyncGenerator,
+  __asyncDelegator,
+  __asyncValues,
+  __makeTemplateObject,
+  __importStar,
+  __importDefault,
+  __classPrivateFieldGet,
+  __classPrivateFieldSet,
+  __classPrivateFieldIn,
+  __createBinding,
+  __addDisposableResource,
+  __disposeResources,
+} from '../tslib.js';
+export * as default from '../tslib.js';
diff --git a/igv_component/node_modules/tslib/modules/index.js b/igv_component/node_modules/tslib/modules/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..0c9dcd5f59ea71bcdbb01749b3885b9d0e2fcddd
--- /dev/null
+++ b/igv_component/node_modules/tslib/modules/index.js
@@ -0,0 +1,68 @@
+import tslib from '../tslib.js';
+const {
+    __extends,
+    __assign,
+    __rest,
+    __decorate,
+    __param,
+    __esDecorate,
+    __runInitializers,
+    __propKey,
+    __setFunctionName,
+    __metadata,
+    __awaiter,
+    __generator,
+    __exportStar,
+    __createBinding,
+    __values,
+    __read,
+    __spread,
+    __spreadArrays,
+    __spreadArray,
+    __await,
+    __asyncGenerator,
+    __asyncDelegator,
+    __asyncValues,
+    __makeTemplateObject,
+    __importStar,
+    __importDefault,
+    __classPrivateFieldGet,
+    __classPrivateFieldSet,
+    __classPrivateFieldIn,
+    __addDisposableResource,
+    __disposeResources,
+} = tslib;
+export {
+    __extends,
+    __assign,
+    __rest,
+    __decorate,
+    __param,
+    __esDecorate,
+    __runInitializers,
+    __propKey,
+    __setFunctionName,
+    __metadata,
+    __awaiter,
+    __generator,
+    __exportStar,
+    __createBinding,
+    __values,
+    __read,
+    __spread,
+    __spreadArrays,
+    __spreadArray,
+    __await,
+    __asyncGenerator,
+    __asyncDelegator,
+    __asyncValues,
+    __makeTemplateObject,
+    __importStar,
+    __importDefault,
+    __classPrivateFieldGet,
+    __classPrivateFieldSet,
+    __classPrivateFieldIn,
+    __addDisposableResource,
+    __disposeResources,
+};
+export default tslib;
diff --git a/igv_component/node_modules/tslib/modules/package.json b/igv_component/node_modules/tslib/modules/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..96ae6e57eb3980436bae7749ddbdca84b4978cc2
--- /dev/null
+++ b/igv_component/node_modules/tslib/modules/package.json
@@ -0,0 +1,3 @@
+{
+    "type": "module"
+}
\ No newline at end of file
diff --git a/igv_component/node_modules/tslib/package.json b/igv_component/node_modules/tslib/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..0a1fdec5de01e074b9966f1b85a5e2a27ae74edf
--- /dev/null
+++ b/igv_component/node_modules/tslib/package.json
@@ -0,0 +1,47 @@
+{
+    "name": "tslib",
+    "author": "Microsoft Corp.",
+    "homepage": "https://www.typescriptlang.org/",
+    "version": "2.6.2",
+    "license": "0BSD",
+    "description": "Runtime library for TypeScript helper functions",
+    "keywords": [
+        "TypeScript",
+        "Microsoft",
+        "compiler",
+        "language",
+        "javascript",
+        "tslib",
+        "runtime"
+    ],
+    "bugs": {
+        "url": "https://github.com/Microsoft/TypeScript/issues"
+    },
+    "repository": {
+        "type": "git",
+        "url": "https://github.com/Microsoft/tslib.git"
+    },
+    "main": "tslib.js",
+    "module": "tslib.es6.js",
+    "jsnext:main": "tslib.es6.js",
+    "typings": "tslib.d.ts",
+    "sideEffects": false,
+    "exports": {
+        ".": {
+            "module": {
+                "types": "./modules/index.d.ts",
+                "default": "./tslib.es6.mjs"
+            },
+            "import": {
+                "node": "./modules/index.js",
+                "default": {
+                    "types": "./modules/index.d.ts",
+                    "default": "./tslib.es6.mjs"
+                }
+            },
+            "default": "./tslib.js"
+        },
+        "./*": "./*",
+        "./": "./"
+    }
+}
diff --git a/igv_component/node_modules/tslib/tslib.d.ts b/igv_component/node_modules/tslib/tslib.d.ts
new file mode 100644
index 0000000000000000000000000000000000000000..95cbc4ffd5cefe5dd2a5144be63ca8d5d3d60668
--- /dev/null
+++ b/igv_component/node_modules/tslib/tslib.d.ts
@@ -0,0 +1,453 @@
+/******************************************************************************
+Copyright (c) Microsoft Corporation.
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.
+***************************************************************************** */
+
+/**
+ * Used to shim class extends.
+ *
+ * @param d The derived class.
+ * @param b The base class.
+ */
+export declare function __extends(d: Function, b: Function): void;
+
+/**
+ * Copy the values of all of the enumerable own properties from one or more source objects to a
+ * target object. Returns the target object.
+ *
+ * @param t The target object to copy to.
+ * @param sources One or more source objects from which to copy properties
+ */
+export declare function __assign(t: any, ...sources: any[]): any;
+
+/**
+ * Performs a rest spread on an object.
+ *
+ * @param t The source value.
+ * @param propertyNames The property names excluded from the rest spread.
+ */
+export declare function __rest(t: any, propertyNames: (string | symbol)[]): any;
+
+/**
+ * Applies decorators to a target object
+ *
+ * @param decorators The set of decorators to apply.
+ * @param target The target object.
+ * @param key If specified, the own property to apply the decorators to.
+ * @param desc The property descriptor, defaults to fetching the descriptor from the target object.
+ * @experimental
+ */
+export declare function __decorate(decorators: Function[], target: any, key?: string | symbol, desc?: any): any;
+
+/**
+ * Creates an observing function decorator from a parameter decorator.
+ *
+ * @param paramIndex The parameter index to apply the decorator to.
+ * @param decorator The parameter decorator to apply. Note that the return value is ignored.
+ * @experimental
+ */
+export declare function __param(paramIndex: number, decorator: Function): Function;
+
+/**
+ * Applies decorators to a class or class member, following the native ECMAScript decorator specification.
+ * @param ctor For non-field class members, the class constructor. Otherwise, `null`.
+ * @param descriptorIn The `PropertyDescriptor` to use when unable to look up the property from `ctor`.
+ * @param decorators The decorators to apply
+ * @param contextIn The `DecoratorContext` to clone for each decorator application.
+ * @param initializers An array of field initializer mutation functions into which new initializers are written.
+ * @param extraInitializers An array of extra initializer functions into which new initializers are written.
+ */
+export declare function __esDecorate(ctor: Function | null, descriptorIn: object | null, decorators: Function[], contextIn: object, initializers: Function[] | null, extraInitializers: Function[]): void;
+
+/**
+ * Runs field initializers or extra initializers generated by `__esDecorate`.
+ * @param thisArg The `this` argument to use.
+ * @param initializers The array of initializers to evaluate.
+ * @param value The initial value to pass to the initializers.
+ */
+export declare function __runInitializers(thisArg: unknown, initializers: Function[], value?: any): any;
+
+/**
+ * Converts a computed property name into a `string` or `symbol` value.
+ */
+export declare function __propKey(x: any): string | symbol;
+
+/**
+ * Assigns the name of a function derived from the left-hand side of an assignment.
+ * @param f The function to rename.
+ * @param name The new name for the function.
+ * @param prefix A prefix (such as `"get"` or `"set"`) to insert before the name.
+ */
+export declare function __setFunctionName(f: Function, name: string | symbol, prefix?: string): Function;
+
+/**
+ * Creates a decorator that sets metadata.
+ *
+ * @param metadataKey The metadata key
+ * @param metadataValue The metadata value
+ * @experimental
+ */
+export declare function __metadata(metadataKey: any, metadataValue: any): Function;
+
+/**
+ * Converts a generator function into a pseudo-async function, by treating each `yield` as an `await`.
+ *
+ * @param thisArg The reference to use as the `this` value in the generator function
+ * @param _arguments The optional arguments array
+ * @param P The optional promise constructor argument, defaults to the `Promise` property of the global object.
+ * @param generator The generator function
+ */
+export declare function __awaiter(thisArg: any, _arguments: any, P: Function, generator: Function): any;
+
+/**
+ * Creates an Iterator object using the body as the implementation.
+ *
+ * @param thisArg The reference to use as the `this` value in the function
+ * @param body The generator state-machine based implementation.
+ *
+ * @see [./docs/generator.md]
+ */
+export declare function __generator(thisArg: any, body: Function): any;
+
+/**
+ * Creates bindings for all enumerable properties of `m` on `exports`
+ *
+ * @param m The source object
+ * @param exports The `exports` object.
+ */
+export declare function __exportStar(m: any, o: any): void;
+
+/**
+ * Creates a value iterator from an `Iterable` or `ArrayLike` object.
+ *
+ * @param o The object.
+ * @throws {TypeError} If `o` is neither `Iterable`, nor an `ArrayLike`.
+ */
+export declare function __values(o: any): any;
+
+/**
+ * Reads values from an `Iterable` or `ArrayLike` object and returns the resulting array.
+ *
+ * @param o The object to read from.
+ * @param n The maximum number of arguments to read, defaults to `Infinity`.
+ */
+export declare function __read(o: any, n?: number): any[];
+
+/**
+ * Creates an array from iterable spread.
+ *
+ * @param args The Iterable objects to spread.
+ * @deprecated since TypeScript 4.2 - Use `__spreadArray`
+ */
+export declare function __spread(...args: any[][]): any[];
+
+/**
+ * Creates an array from array spread.
+ *
+ * @param args The ArrayLikes to spread into the resulting array.
+ * @deprecated since TypeScript 4.2 - Use `__spreadArray`
+ */
+export declare function __spreadArrays(...args: any[][]): any[];
+
+/**
+ * Spreads the `from` array into the `to` array.
+ *
+ * @param pack Replace empty elements with `undefined`.
+ */
+export declare function __spreadArray(to: any[], from: any[], pack?: boolean): any[];
+
+/**
+ * Creates an object that signals to `__asyncGenerator` that it shouldn't be yielded,
+ * and instead should be awaited and the resulting value passed back to the generator.
+ *
+ * @param v The value to await.
+ */
+export declare function __await(v: any): any;
+
+/**
+ * Converts a generator function into an async generator function, by using `yield __await`
+ * in place of normal `await`.
+ *
+ * @param thisArg The reference to use as the `this` value in the generator function
+ * @param _arguments The optional arguments array
+ * @param generator The generator function
+ */
+export declare function __asyncGenerator(thisArg: any, _arguments: any, generator: Function): any;
+
+/**
+ * Used to wrap a potentially async iterator in such a way so that it wraps the result
+ * of calling iterator methods of `o` in `__await` instances, and then yields the awaited values.
+ *
+ * @param o The potentially async iterator.
+ * @returns A synchronous iterator yielding `__await` instances on every odd invocation
+ *          and returning the awaited `IteratorResult` passed to `next` every even invocation.
+ */
+export declare function __asyncDelegator(o: any): any;
+
+/**
+ * Creates a value async iterator from an `AsyncIterable`, `Iterable` or `ArrayLike` object.
+ *
+ * @param o The object.
+ * @throws {TypeError} If `o` is neither `AsyncIterable`, `Iterable`, nor an `ArrayLike`.
+ */
+export declare function __asyncValues(o: any): any;
+
+/**
+ * Creates a `TemplateStringsArray` frozen object from the `cooked` and `raw` arrays.
+ *
+ * @param cooked The cooked possibly-sparse array.
+ * @param raw The raw string content.
+ */
+export declare function __makeTemplateObject(cooked: string[], raw: string[]): TemplateStringsArray;
+
+/**
+ * Used to shim default and named imports in ECMAScript Modules transpiled to CommonJS.
+ *
+ * ```js
+ * import Default, { Named, Other } from "mod";
+ * // or
+ * import { default as Default, Named, Other } from "mod";
+ * ```
+ *
+ * @param mod The CommonJS module exports object.
+ */
+export declare function __importStar<T>(mod: T): T;
+
+/**
+ * Used to shim default imports in ECMAScript Modules transpiled to CommonJS.
+ *
+ * ```js
+ * import Default from "mod";
+ * ```
+ *
+ * @param mod The CommonJS module exports object.
+ */
+export declare function __importDefault<T>(mod: T): T | { default: T };
+
+/**
+ * Emulates reading a private instance field.
+ *
+ * @param receiver The instance from which to read the private field.
+ * @param state A WeakMap containing the private field value for an instance.
+ * @param kind Either `"f"` for a field, `"a"` for an accessor, or `"m"` for a method.
+ *
+ * @throws {TypeError} If `state` doesn't have an entry for `receiver`.
+ */
+export declare function __classPrivateFieldGet<T extends object, V>(
+    receiver: T,
+    state: { has(o: T): boolean, get(o: T): V | undefined },
+    kind?: "f"
+): V;
+
+/**
+ * Emulates reading a private static field.
+ *
+ * @param receiver The object from which to read the private static field.
+ * @param state The class constructor containing the definition of the static field.
+ * @param kind Either `"f"` for a field, `"a"` for an accessor, or `"m"` for a method.
+ * @param f The descriptor that holds the static field value.
+ *
+ * @throws {TypeError} If `receiver` is not `state`.
+ */
+export declare function __classPrivateFieldGet<T extends new (...args: any[]) => unknown, V>(
+    receiver: T,
+    state: T,
+    kind: "f",
+    f: { value: V }
+): V;
+
+/**
+ * Emulates evaluating a private instance "get" accessor.
+ *
+ * @param receiver The instance on which to evaluate the private "get" accessor.
+ * @param state A WeakSet used to verify an instance supports the private "get" accessor.
+ * @param kind Either `"f"` for a field, `"a"` for an accessor, or `"m"` for a method.
+ * @param f The "get" accessor function to evaluate.
+ *
+ * @throws {TypeError} If `state` doesn't have an entry for `receiver`.
+ */
+export declare function __classPrivateFieldGet<T extends object, V>(
+    receiver: T,
+    state: { has(o: T): boolean },
+    kind: "a",
+    f: () => V
+): V;
+
+/**
+ * Emulates evaluating a private static "get" accessor.
+ *
+ * @param receiver The object on which to evaluate the private static "get" accessor.
+ * @param state The class constructor containing the definition of the static "get" accessor.
+ * @param kind Either `"f"` for a field, `"a"` for an accessor, or `"m"` for a method.
+ * @param f The "get" accessor function to evaluate.
+ *
+ * @throws {TypeError} If `receiver` is not `state`.
+ */
+export declare function __classPrivateFieldGet<T extends new (...args: any[]) => unknown, V>(
+    receiver: T,
+    state: T,
+    kind: "a",
+    f: () => V
+): V;
+
+/**
+ * Emulates reading a private instance method.
+ *
+ * @param receiver The instance from which to read a private method.
+ * @param state A WeakSet used to verify an instance supports the private method.
+ * @param kind Either `"f"` for a field, `"a"` for an accessor, or `"m"` for a method.
+ * @param f The function to return as the private instance method.
+ *
+ * @throws {TypeError} If `state` doesn't have an entry for `receiver`.
+ */
+export declare function __classPrivateFieldGet<T extends object, V extends (...args: any[]) => unknown>(
+    receiver: T,
+    state: { has(o: T): boolean },
+    kind: "m",
+    f: V
+): V;
+
+/**
+ * Emulates reading a private static method.
+ *
+ * @param receiver The object from which to read the private static method.
+ * @param state The class constructor containing the definition of the static method.
+ * @param kind Either `"f"` for a field, `"a"` for an accessor, or `"m"` for a method.
+ * @param f The function to return as the private static method.
+ *
+ * @throws {TypeError} If `receiver` is not `state`.
+ */
+export declare function __classPrivateFieldGet<T extends new (...args: any[]) => unknown, V extends (...args: any[]) => unknown>(
+    receiver: T,
+    state: T,
+    kind: "m",
+    f: V
+): V;
+
+/**
+ * Emulates writing to a private instance field.
+ *
+ * @param receiver The instance on which to set a private field value.
+ * @param state A WeakMap used to store the private field value for an instance.
+ * @param value The value to store in the private field.
+ * @param kind Either `"f"` for a field, `"a"` for an accessor, or `"m"` for a method.
+ *
+ * @throws {TypeError} If `state` doesn't have an entry for `receiver`.
+ */
+export declare function __classPrivateFieldSet<T extends object, V>(
+    receiver: T,
+    state: { has(o: T): boolean, set(o: T, value: V): unknown },
+    value: V,
+    kind?: "f"
+): V;
+
+/**
+ * Emulates writing to a private static field.
+ *
+ * @param receiver The object on which to set the private static field.
+ * @param state The class constructor containing the definition of the private static field.
+ * @param value The value to store in the private field.
+ * @param kind Either `"f"` for a field, `"a"` for an accessor, or `"m"` for a method.
+ * @param f The descriptor that holds the static field value.
+ *
+ * @throws {TypeError} If `receiver` is not `state`.
+ */
+export declare function __classPrivateFieldSet<T extends new (...args: any[]) => unknown, V>(
+    receiver: T,
+    state: T,
+    value: V,
+    kind: "f",
+    f: { value: V }
+): V;
+
+/**
+ * Emulates writing to a private instance "set" accessor.
+ *
+ * @param receiver The instance on which to evaluate the private instance "set" accessor.
+ * @param state A WeakSet used to verify an instance supports the private "set" accessor.
+ * @param value The value to store in the private accessor.
+ * @param kind Either `"f"` for a field, `"a"` for an accessor, or `"m"` for a method.
+ * @param f The "set" accessor function to evaluate.
+ *
+ * @throws {TypeError} If `state` doesn't have an entry for `receiver`.
+ */
+export declare function __classPrivateFieldSet<T extends object, V>(
+    receiver: T,
+    state: { has(o: T): boolean },
+    value: V,
+    kind: "a",
+    f: (v: V) => void
+): V;
+
+/**
+ * Emulates writing to a private static "set" accessor.
+ *
+ * @param receiver The object on which to evaluate the private static "set" accessor.
+ * @param state The class constructor containing the definition of the static "set" accessor.
+ * @param value The value to store in the private field.
+ * @param kind Either `"f"` for a field, `"a"` for an accessor, or `"m"` for a method.
+ * @param f The "set" accessor function to evaluate.
+ *
+ * @throws {TypeError} If `receiver` is not `state`.
+ */
+export declare function __classPrivateFieldSet<T extends new (...args: any[]) => unknown, V>(
+    receiver: T,
+    state: T,
+    value: V,
+    kind: "a",
+    f: (v: V) => void
+): V;
+
+/**
+ * Checks for the existence of a private field/method/accessor.
+ *
+ * @param state The class constructor containing the static member, or the WeakMap or WeakSet associated with a private instance member.
+ * @param receiver The object for which to test the presence of the private member.
+ */
+export declare function __classPrivateFieldIn(
+    state: (new (...args: any[]) => unknown) | { has(o: any): boolean },
+    receiver: unknown,
+): boolean;
+
+/**
+ * Creates a re-export binding on `object` with key `objectKey` that references `target[key]`.
+ *
+ * @param object The local `exports` object.
+ * @param target The object to re-export from.
+ * @param key The property key of `target` to re-export.
+ * @param objectKey The property key to re-export as. Defaults to `key`.
+ */
+export declare function __createBinding(object: object, target: object, key: PropertyKey, objectKey?: PropertyKey): void;
+
+/**
+ * Adds a disposable resource to a resource-tracking environment object.
+ * @param env A resource-tracking environment object.
+ * @param value Either a Disposable or AsyncDisposable object, `null`, or `undefined`.
+ * @param async When `true`, `AsyncDisposable` resources can be added. When `false`, `AsyncDisposable` resources cannot be added.
+ * @returns The {@link value} argument.
+ *
+ * @throws {TypeError} If {@link value} is not an object, or if either `Symbol.dispose` or `Symbol.asyncDispose` are not
+ * defined, or if {@link value} does not have an appropriate `Symbol.dispose` or `Symbol.asyncDispose` method.
+ */
+export declare function __addDisposableResource<T>(env: { stack: { value?: unknown, dispose?: Function, async: boolean }[]; error: unknown; hasError: boolean; }, value: T, async: boolean): T;
+
+/**
+ * Disposes all resources in a resource-tracking environment object.
+ * @param env A resource-tracking environment object.
+ * @returns A {@link Promise} if any resources in the environment were marked as `async` when added; otherwise, `void`.
+ *
+ * @throws {SuppressedError} if an error thrown during disposal would have suppressed a prior error from disposal or the
+ * error recorded in the resource-tracking environment object.
+ * @seealso {@link __addDisposableResource}
+ */
+export declare function __disposeResources(env: { stack: { value?: unknown, dispose?: Function, async: boolean }[]; error: unknown; hasError: boolean; }): any;
diff --git a/igv_component/node_modules/tslib/tslib.es6.html b/igv_component/node_modules/tslib/tslib.es6.html
new file mode 100644
index 0000000000000000000000000000000000000000..b122e41b06af8034aca824c9563053cf501eba2a
--- /dev/null
+++ b/igv_component/node_modules/tslib/tslib.es6.html
@@ -0,0 +1 @@
+<script src="tslib.es6.js"></script>
\ No newline at end of file
diff --git a/igv_component/node_modules/tslib/tslib.es6.js b/igv_component/node_modules/tslib/tslib.es6.js
new file mode 100644
index 0000000000000000000000000000000000000000..66174fb96fd002ecf363bd8625272488524fba34
--- /dev/null
+++ b/igv_component/node_modules/tslib/tslib.es6.js
@@ -0,0 +1,370 @@
+/******************************************************************************
+Copyright (c) Microsoft Corporation.
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.
+***************************************************************************** */
+/* global Reflect, Promise, SuppressedError, Symbol */
+
+var extendStatics = function(d, b) {
+    extendStatics = Object.setPrototypeOf ||
+        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+        function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
+    return extendStatics(d, b);
+};
+
+export function __extends(d, b) {
+    if (typeof b !== "function" && b !== null)
+        throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
+    extendStatics(d, b);
+    function __() { this.constructor = d; }
+    d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+}
+
+export var __assign = function() {
+    __assign = Object.assign || function __assign(t) {
+        for (var s, i = 1, n = arguments.length; i < n; i++) {
+            s = arguments[i];
+            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
+        }
+        return t;
+    }
+    return __assign.apply(this, arguments);
+}
+
+export function __rest(s, e) {
+    var t = {};
+    for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
+        t[p] = s[p];
+    if (s != null && typeof Object.getOwnPropertySymbols === "function")
+        for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+            if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                t[p[i]] = s[p[i]];
+        }
+    return t;
+}
+
+export function __decorate(decorators, target, key, desc) {
+    var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
+    if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
+    else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
+    return c > 3 && r && Object.defineProperty(target, key, r), r;
+}
+
+export function __param(paramIndex, decorator) {
+    return function (target, key) { decorator(target, key, paramIndex); }
+}
+
+export function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {
+    function accept(f) { if (f !== void 0 && typeof f !== "function") throw new TypeError("Function expected"); return f; }
+    var kind = contextIn.kind, key = kind === "getter" ? "get" : kind === "setter" ? "set" : "value";
+    var target = !descriptorIn && ctor ? contextIn["static"] ? ctor : ctor.prototype : null;
+    var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});
+    var _, done = false;
+    for (var i = decorators.length - 1; i >= 0; i--) {
+        var context = {};
+        for (var p in contextIn) context[p] = p === "access" ? {} : contextIn[p];
+        for (var p in contextIn.access) context.access[p] = contextIn.access[p];
+        context.addInitializer = function (f) { if (done) throw new TypeError("Cannot add initializers after decoration has completed"); extraInitializers.push(accept(f || null)); };
+        var result = (0, decorators[i])(kind === "accessor" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);
+        if (kind === "accessor") {
+            if (result === void 0) continue;
+            if (result === null || typeof result !== "object") throw new TypeError("Object expected");
+            if (_ = accept(result.get)) descriptor.get = _;
+            if (_ = accept(result.set)) descriptor.set = _;
+            if (_ = accept(result.init)) initializers.unshift(_);
+        }
+        else if (_ = accept(result)) {
+            if (kind === "field") initializers.unshift(_);
+            else descriptor[key] = _;
+        }
+    }
+    if (target) Object.defineProperty(target, contextIn.name, descriptor);
+    done = true;
+};
+
+export function __runInitializers(thisArg, initializers, value) {
+    var useValue = arguments.length > 2;
+    for (var i = 0; i < initializers.length; i++) {
+        value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);
+    }
+    return useValue ? value : void 0;
+};
+
+export function __propKey(x) {
+    return typeof x === "symbol" ? x : "".concat(x);
+};
+
+export function __setFunctionName(f, name, prefix) {
+    if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+    return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+};
+
+export function __metadata(metadataKey, metadataValue) {
+    if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(metadataKey, metadataValue);
+}
+
+export function __awaiter(thisArg, _arguments, P, generator) {
+    function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+    return new (P || (P = Promise))(function (resolve, reject) {
+        function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+        function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+        function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+        step((generator = generator.apply(thisArg, _arguments || [])).next());
+    });
+}
+
+export function __generator(thisArg, body) {
+    var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
+    return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
+    function verb(n) { return function (v) { return step([n, v]); }; }
+    function step(op) {
+        if (f) throw new TypeError("Generator is already executing.");
+        while (g && (g = 0, op[0] && (_ = 0)), _) try {
+            if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
+            if (y = 0, t) op = [op[0] & 2, t.value];
+            switch (op[0]) {
+                case 0: case 1: t = op; break;
+                case 4: _.label++; return { value: op[1], done: false };
+                case 5: _.label++; y = op[1]; op = [0]; continue;
+                case 7: op = _.ops.pop(); _.trys.pop(); continue;
+                default:
+                    if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
+                    if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
+                    if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
+                    if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
+                    if (t[2]) _.ops.pop();
+                    _.trys.pop(); continue;
+            }
+            op = body.call(thisArg, _);
+        } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
+        if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
+    }
+}
+
+export var __createBinding = Object.create ? (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    var desc = Object.getOwnPropertyDescriptor(m, k);
+    if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+        desc = { enumerable: true, get: function() { return m[k]; } };
+    }
+    Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+    if (k2 === undefined) k2 = k;
+    o[k2] = m[k];
+});
+
+export function __exportStar(m, o) {
+    for (var p in m) if (p !== "default" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);
+}
+
+export function __values(o) {
+    var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0;
+    if (m) return m.call(o);
+    if (o && typeof o.length === "number") return {
+        next: function () {
+            if (o && i >= o.length) o = void 0;
+            return { value: o && o[i++], done: !o };
+        }
+    };
+    throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
+}
+
+export function __read(o, n) {
+    var m = typeof Symbol === "function" && o[Symbol.iterator];
+    if (!m) return o;
+    var i = m.call(o), r, ar = [], e;
+    try {
+        while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
+    }
+    catch (error) { e = { error: error }; }
+    finally {
+        try {
+            if (r && !r.done && (m = i["return"])) m.call(i);
+        }
+        finally { if (e) throw e.error; }
+    }
+    return ar;
+}
+
+/** @deprecated */
+export function __spread() {
+    for (var ar = [], i = 0; i < arguments.length; i++)
+        ar = ar.concat(__read(arguments[i]));
+    return ar;
+}
+
+/** @deprecated */
+export function __spreadArrays() {
+    for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;
+    for (var r = Array(s), k = 0, i = 0; i < il; i++)
+        for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)
+            r[k] = a[j];
+    return r;
+}
+
+export function __spreadArray(to, from, pack) {
+    if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
+        if (ar || !(i in from)) {
+            if (!ar) ar = Array.prototype.slice.call(from, 0, i);
+            ar[i] = from[i];
+        }
+    }
+    return to.concat(ar || Array.prototype.slice.call(from));
+}
+
+export function __await(v) {
+    return this instanceof __await ? (this.v = v, this) : new __await(v);
+}
+
+export function __asyncGenerator(thisArg, _arguments, generator) {
+    if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
+    var g = generator.apply(thisArg, _arguments || []), i, q = [];
+    return i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i;
+    function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }
+    function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }
+    function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }
+    function fulfill(value) { resume("next", value); }
+    function reject(value) { resume("throw", value); }
+    function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }
+}
+
+export function __asyncDelegator(o) {
+    var i, p;
+    return i = {}, verb("next"), verb("throw", function (e) { throw e; }), verb("return"), i[Symbol.iterator] = function () { return this; }, i;
+    function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }
+}
+
+export function __asyncValues(o) {
+    if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
+    var m = o[Symbol.asyncIterator], i;
+    return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i);
+    function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }
+    function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }
+}
+
+export function __makeTemplateObject(cooked, raw) {
+    if (Object.defineProperty) { Object.defineProperty(cooked, "raw", { value: raw }); } else { cooked.raw = raw; }
+    return cooked;
+};
+
+var __setModuleDefault = Object.create ? (function(o, v) {
+    Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+    o["default"] = v;
+};
+
+export function __importStar(mod) {
+    if (mod && mod.__esModule) return mod;
+    var result = {};
+    if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+    __setModuleDefault(result, mod);
+    return result;
+}
+
+export function __importDefault(mod) {
+    return (mod && mod.__esModule) ? mod : { default: mod };
+}
+
+export function __classPrivateFieldGet(receiver, state, kind, f) {
+    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
+    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
+    return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
+}
+
+export function __classPrivateFieldSet(receiver, state, value, kind, f) {
+    if (kind === "m") throw new TypeError("Private method is not writable");
+    if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
+    if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
+    return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
+}
+
+export function __classPrivateFieldIn(state, receiver) {
+    if (receiver === null || (typeof receiver !== "object" && typeof receiver !== "function")) throw new TypeError("Cannot use 'in' operator on non-object");
+    return typeof state === "function" ? receiver === state : state.has(receiver);
+}
+
+export function __addDisposableResource(env, value, async) {
+    if (value !== null && value !== void 0) {
+        if (typeof value !== "object" && typeof value !== "function") throw new TypeError("Object expected.");
+        var dispose;
+        if (async) {
+            if (!Symbol.asyncDispose) throw new TypeError("Symbol.asyncDispose is not defined.");
+            dispose = value[Symbol.asyncDispose];
+        }
+        if (dispose === void 0) {
+            if (!Symbol.dispose) throw new TypeError("Symbol.dispose is not defined.");
+            dispose = value[Symbol.dispose];
+        }
+        if (typeof dispose !== "function") throw new TypeError("Object not disposable.");
+        env.stack.push({ value: value, dispose: dispose, async: async });
+    }
+    else if (async) {
+        env.stack.push({ async: true });
+    }
+    return value;
+}
+
+var _SuppressedError = typeof SuppressedError === "function" ? SuppressedError : function (error, suppressed, message) {
+    var e = new Error(message);
+    return e.name = "SuppressedError", e.error = error, e.suppressed = suppressed, e;
+};
+
+export function __disposeResources(env) {
+    function fail(e) {
+        env.error = env.hasError ? new _SuppressedError(e, env.error, "An error was suppressed during disposal.") : e;
+        env.hasError = true;
+    }
+    function next() {
+        while (env.stack.length) {
+            var rec = env.stack.pop();
+            try {
+                var result = rec.dispose && rec.dispose.call(rec.value);
+                if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });
+            }
+            catch (e) {
+                fail(e);
+            }
+        }
+        if (env.hasError) throw env.error;
+    }
+    return next();
+}
+
+export default {
+    __extends: __extends,
+    __assign: __assign,
+    __rest: __rest,
+    __decorate: __decorate,
+    __param: __param,
+    __metadata: __metadata,
+    __awaiter: __awaiter,
+    __generator: __generator,
+    __createBinding: __createBinding,
+    __exportStar: __exportStar,
+    __values: __values,
+    __read: __read,
+    __spread: __spread,
+    __spreadArrays: __spreadArrays,
+    __spreadArray: __spreadArray,
+    __await: __await,
+    __asyncGenerator: __asyncGenerator,
+    __asyncDelegator: __asyncDelegator,
+    __asyncValues: __asyncValues,
+    __makeTemplateObject: __makeTemplateObject,
+    __importStar: __importStar,
+    __importDefault: __importDefault,
+    __classPrivateFieldGet: __classPrivateFieldGet,
+    __classPrivateFieldSet: __classPrivateFieldSet,
+    __classPrivateFieldIn: __classPrivateFieldIn,
+    __addDisposableResource: __addDisposableResource,
+    __disposeResources: __disposeResources,
+};
diff --git a/igv_component/node_modules/tslib/tslib.es6.mjs b/igv_component/node_modules/tslib/tslib.es6.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..c8e2999342091ddf81633abeb90642d2c5811eba
--- /dev/null
+++ b/igv_component/node_modules/tslib/tslib.es6.mjs
@@ -0,0 +1,370 @@
+/******************************************************************************
+Copyright (c) Microsoft Corporation.
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.
+***************************************************************************** */
+/* global Reflect, Promise, SuppressedError, Symbol */
+
+var extendStatics = function(d, b) {
+  extendStatics = Object.setPrototypeOf ||
+      ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+      function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
+  return extendStatics(d, b);
+};
+
+export function __extends(d, b) {
+  if (typeof b !== "function" && b !== null)
+      throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
+  extendStatics(d, b);
+  function __() { this.constructor = d; }
+  d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+}
+
+export var __assign = function() {
+  __assign = Object.assign || function __assign(t) {
+      for (var s, i = 1, n = arguments.length; i < n; i++) {
+          s = arguments[i];
+          for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
+      }
+      return t;
+  }
+  return __assign.apply(this, arguments);
+}
+
+export function __rest(s, e) {
+  var t = {};
+  for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
+      t[p] = s[p];
+  if (s != null && typeof Object.getOwnPropertySymbols === "function")
+      for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+          if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+              t[p[i]] = s[p[i]];
+      }
+  return t;
+}
+
+export function __decorate(decorators, target, key, desc) {
+  var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
+  if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
+  else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
+  return c > 3 && r && Object.defineProperty(target, key, r), r;
+}
+
+export function __param(paramIndex, decorator) {
+  return function (target, key) { decorator(target, key, paramIndex); }
+}
+
+export function __esDecorate(ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {
+  function accept(f) { if (f !== void 0 && typeof f !== "function") throw new TypeError("Function expected"); return f; }
+  var kind = contextIn.kind, key = kind === "getter" ? "get" : kind === "setter" ? "set" : "value";
+  var target = !descriptorIn && ctor ? contextIn["static"] ? ctor : ctor.prototype : null;
+  var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});
+  var _, done = false;
+  for (var i = decorators.length - 1; i >= 0; i--) {
+      var context = {};
+      for (var p in contextIn) context[p] = p === "access" ? {} : contextIn[p];
+      for (var p in contextIn.access) context.access[p] = contextIn.access[p];
+      context.addInitializer = function (f) { if (done) throw new TypeError("Cannot add initializers after decoration has completed"); extraInitializers.push(accept(f || null)); };
+      var result = (0, decorators[i])(kind === "accessor" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);
+      if (kind === "accessor") {
+          if (result === void 0) continue;
+          if (result === null || typeof result !== "object") throw new TypeError("Object expected");
+          if (_ = accept(result.get)) descriptor.get = _;
+          if (_ = accept(result.set)) descriptor.set = _;
+          if (_ = accept(result.init)) initializers.unshift(_);
+      }
+      else if (_ = accept(result)) {
+          if (kind === "field") initializers.unshift(_);
+          else descriptor[key] = _;
+      }
+  }
+  if (target) Object.defineProperty(target, contextIn.name, descriptor);
+  done = true;
+};
+
+export function __runInitializers(thisArg, initializers, value) {
+  var useValue = arguments.length > 2;
+  for (var i = 0; i < initializers.length; i++) {
+      value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);
+  }
+  return useValue ? value : void 0;
+};
+
+export function __propKey(x) {
+  return typeof x === "symbol" ? x : "".concat(x);
+};
+
+export function __setFunctionName(f, name, prefix) {
+  if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+  return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+};
+
+export function __metadata(metadataKey, metadataValue) {
+  if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(metadataKey, metadataValue);
+}
+
+export function __awaiter(thisArg, _arguments, P, generator) {
+  function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+  return new (P || (P = Promise))(function (resolve, reject) {
+      function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+      function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+      function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+      step((generator = generator.apply(thisArg, _arguments || [])).next());
+  });
+}
+
+export function __generator(thisArg, body) {
+  var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
+  return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
+  function verb(n) { return function (v) { return step([n, v]); }; }
+  function step(op) {
+      if (f) throw new TypeError("Generator is already executing.");
+      while (g && (g = 0, op[0] && (_ = 0)), _) try {
+          if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
+          if (y = 0, t) op = [op[0] & 2, t.value];
+          switch (op[0]) {
+              case 0: case 1: t = op; break;
+              case 4: _.label++; return { value: op[1], done: false };
+              case 5: _.label++; y = op[1]; op = [0]; continue;
+              case 7: op = _.ops.pop(); _.trys.pop(); continue;
+              default:
+                  if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
+                  if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
+                  if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
+                  if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
+                  if (t[2]) _.ops.pop();
+                  _.trys.pop(); continue;
+          }
+          op = body.call(thisArg, _);
+      } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
+      if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
+  }
+}
+
+export var __createBinding = Object.create ? (function(o, m, k, k2) {
+  if (k2 === undefined) k2 = k;
+  var desc = Object.getOwnPropertyDescriptor(m, k);
+  if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+      desc = { enumerable: true, get: function() { return m[k]; } };
+  }
+  Object.defineProperty(o, k2, desc);
+}) : (function(o, m, k, k2) {
+  if (k2 === undefined) k2 = k;
+  o[k2] = m[k];
+});
+
+export function __exportStar(m, o) {
+  for (var p in m) if (p !== "default" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);
+}
+
+export function __values(o) {
+  var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0;
+  if (m) return m.call(o);
+  if (o && typeof o.length === "number") return {
+      next: function () {
+          if (o && i >= o.length) o = void 0;
+          return { value: o && o[i++], done: !o };
+      }
+  };
+  throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
+}
+
+export function __read(o, n) {
+  var m = typeof Symbol === "function" && o[Symbol.iterator];
+  if (!m) return o;
+  var i = m.call(o), r, ar = [], e;
+  try {
+      while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
+  }
+  catch (error) { e = { error: error }; }
+  finally {
+      try {
+          if (r && !r.done && (m = i["return"])) m.call(i);
+      }
+      finally { if (e) throw e.error; }
+  }
+  return ar;
+}
+
+/** @deprecated */
+export function __spread() {
+  for (var ar = [], i = 0; i < arguments.length; i++)
+      ar = ar.concat(__read(arguments[i]));
+  return ar;
+}
+
+/** @deprecated */
+export function __spreadArrays() {
+  for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;
+  for (var r = Array(s), k = 0, i = 0; i < il; i++)
+      for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)
+          r[k] = a[j];
+  return r;
+}
+
+export function __spreadArray(to, from, pack) {
+  if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
+      if (ar || !(i in from)) {
+          if (!ar) ar = Array.prototype.slice.call(from, 0, i);
+          ar[i] = from[i];
+      }
+  }
+  return to.concat(ar || Array.prototype.slice.call(from));
+}
+
+export function __await(v) {
+  return this instanceof __await ? (this.v = v, this) : new __await(v);
+}
+
+export function __asyncGenerator(thisArg, _arguments, generator) {
+  if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
+  var g = generator.apply(thisArg, _arguments || []), i, q = [];
+  return i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i;
+  function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }
+  function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }
+  function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r); }
+  function fulfill(value) { resume("next", value); }
+  function reject(value) { resume("throw", value); }
+  function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }
+}
+
+export function __asyncDelegator(o) {
+  var i, p;
+  return i = {}, verb("next"), verb("throw", function (e) { throw e; }), verb("return"), i[Symbol.iterator] = function () { return this; }, i;
+  function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }
+}
+
+export function __asyncValues(o) {
+  if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
+  var m = o[Symbol.asyncIterator], i;
+  return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i);
+  function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }
+  function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }
+}
+
+export function __makeTemplateObject(cooked, raw) {
+  if (Object.defineProperty) { Object.defineProperty(cooked, "raw", { value: raw }); } else { cooked.raw = raw; }
+  return cooked;
+};
+
+var __setModuleDefault = Object.create ? (function(o, v) {
+  Object.defineProperty(o, "default", { enumerable: true, value: v });
+}) : function(o, v) {
+  o["default"] = v;
+};
+
+export function __importStar(mod) {
+  if (mod && mod.__esModule) return mod;
+  var result = {};
+  if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+  __setModuleDefault(result, mod);
+  return result;
+}
+
+export function __importDefault(mod) {
+  return (mod && mod.__esModule) ? mod : { default: mod };
+}
+
+export function __classPrivateFieldGet(receiver, state, kind, f) {
+  if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
+  if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
+  return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
+}
+
+export function __classPrivateFieldSet(receiver, state, value, kind, f) {
+  if (kind === "m") throw new TypeError("Private method is not writable");
+  if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
+  if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
+  return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
+}
+
+export function __classPrivateFieldIn(state, receiver) {
+  if (receiver === null || (typeof receiver !== "object" && typeof receiver !== "function")) throw new TypeError("Cannot use 'in' operator on non-object");
+  return typeof state === "function" ? receiver === state : state.has(receiver);
+}
+
+export function __addDisposableResource(env, value, async) {
+  if (value !== null && value !== void 0) {
+    if (typeof value !== "object" && typeof value !== "function") throw new TypeError("Object expected.");
+    var dispose;
+    if (async) {
+        if (!Symbol.asyncDispose) throw new TypeError("Symbol.asyncDispose is not defined.");
+        dispose = value[Symbol.asyncDispose];
+    }
+    if (dispose === void 0) {
+        if (!Symbol.dispose) throw new TypeError("Symbol.dispose is not defined.");
+        dispose = value[Symbol.dispose];
+    }
+    if (typeof dispose !== "function") throw new TypeError("Object not disposable.");
+    env.stack.push({ value: value, dispose: dispose, async: async });
+  }
+  else if (async) {
+    env.stack.push({ async: true });
+  }
+  return value;
+}
+
+var _SuppressedError = typeof SuppressedError === "function" ? SuppressedError : function (error, suppressed, message) {
+  var e = new Error(message);
+  return e.name = "SuppressedError", e.error = error, e.suppressed = suppressed, e;
+};
+
+export function __disposeResources(env) {
+  function fail(e) {
+    env.error = env.hasError ? new _SuppressedError(e, env.error, "An error was suppressed during disposal.") : e;
+    env.hasError = true;
+  }
+  function next() {
+    while (env.stack.length) {
+      var rec = env.stack.pop();
+      try {
+        var result = rec.dispose && rec.dispose.call(rec.value);
+        if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });
+      }
+      catch (e) {
+          fail(e);
+      }
+    }
+    if (env.hasError) throw env.error;
+  }
+  return next();
+}
+
+export default {
+  __extends,
+  __assign,
+  __rest,
+  __decorate,
+  __param,
+  __metadata,
+  __awaiter,
+  __generator,
+  __createBinding,
+  __exportStar,
+  __values,
+  __read,
+  __spread,
+  __spreadArrays,
+  __spreadArray,
+  __await,
+  __asyncGenerator,
+  __asyncDelegator,
+  __asyncValues,
+  __makeTemplateObject,
+  __importStar,
+  __importDefault,
+  __classPrivateFieldGet,
+  __classPrivateFieldSet,
+  __classPrivateFieldIn,
+  __addDisposableResource,
+  __disposeResources,
+};
diff --git a/igv_component/node_modules/tslib/tslib.html b/igv_component/node_modules/tslib/tslib.html
new file mode 100644
index 0000000000000000000000000000000000000000..44c9ba51e3547ad1b7a9244f14703ab681519619
--- /dev/null
+++ b/igv_component/node_modules/tslib/tslib.html
@@ -0,0 +1 @@
+<script src="tslib.js"></script>
\ No newline at end of file
diff --git a/igv_component/node_modules/tslib/tslib.js b/igv_component/node_modules/tslib/tslib.js
new file mode 100644
index 0000000000000000000000000000000000000000..7c532936d339e2af4ccc05a5f89754a3f9335c44
--- /dev/null
+++ b/igv_component/node_modules/tslib/tslib.js
@@ -0,0 +1,421 @@
+/******************************************************************************
+Copyright (c) Microsoft Corporation.
+
+Permission to use, copy, modify, and/or distribute this software for any
+purpose with or without fee is hereby granted.
+
+THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH
+REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,
+INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
+LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR
+OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
+PERFORMANCE OF THIS SOFTWARE.
+***************************************************************************** */
+/* global global, define, Symbol, Reflect, Promise, SuppressedError */
+var __extends;
+var __assign;
+var __rest;
+var __decorate;
+var __param;
+var __esDecorate;
+var __runInitializers;
+var __propKey;
+var __setFunctionName;
+var __metadata;
+var __awaiter;
+var __generator;
+var __exportStar;
+var __values;
+var __read;
+var __spread;
+var __spreadArrays;
+var __spreadArray;
+var __await;
+var __asyncGenerator;
+var __asyncDelegator;
+var __asyncValues;
+var __makeTemplateObject;
+var __importStar;
+var __importDefault;
+var __classPrivateFieldGet;
+var __classPrivateFieldSet;
+var __classPrivateFieldIn;
+var __createBinding;
+var __addDisposableResource;
+var __disposeResources;
+(function (factory) {
+    var root = typeof global === "object" ? global : typeof self === "object" ? self : typeof this === "object" ? this : {};
+    if (typeof define === "function" && define.amd) {
+        define("tslib", ["exports"], function (exports) { factory(createExporter(root, createExporter(exports))); });
+    }
+    else if (typeof module === "object" && typeof module.exports === "object") {
+        factory(createExporter(root, createExporter(module.exports)));
+    }
+    else {
+        factory(createExporter(root));
+    }
+    function createExporter(exports, previous) {
+        if (exports !== root) {
+            if (typeof Object.create === "function") {
+                Object.defineProperty(exports, "__esModule", { value: true });
+            }
+            else {
+                exports.__esModule = true;
+            }
+        }
+        return function (id, v) { return exports[id] = previous ? previous(id, v) : v; };
+    }
+})
+(function (exporter) {
+    var extendStatics = Object.setPrototypeOf ||
+        ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||
+        function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };
+
+    __extends = function (d, b) {
+        if (typeof b !== "function" && b !== null)
+            throw new TypeError("Class extends value " + String(b) + " is not a constructor or null");
+        extendStatics(d, b);
+        function __() { this.constructor = d; }
+        d.prototype = b === null ? Object.create(b) : (__.prototype = b.prototype, new __());
+    };
+
+    __assign = Object.assign || function (t) {
+        for (var s, i = 1, n = arguments.length; i < n; i++) {
+            s = arguments[i];
+            for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p)) t[p] = s[p];
+        }
+        return t;
+    };
+
+    __rest = function (s, e) {
+        var t = {};
+        for (var p in s) if (Object.prototype.hasOwnProperty.call(s, p) && e.indexOf(p) < 0)
+            t[p] = s[p];
+        if (s != null && typeof Object.getOwnPropertySymbols === "function")
+            for (var i = 0, p = Object.getOwnPropertySymbols(s); i < p.length; i++) {
+                if (e.indexOf(p[i]) < 0 && Object.prototype.propertyIsEnumerable.call(s, p[i]))
+                    t[p[i]] = s[p[i]];
+            }
+        return t;
+    };
+
+    __decorate = function (decorators, target, key, desc) {
+        var c = arguments.length, r = c < 3 ? target : desc === null ? desc = Object.getOwnPropertyDescriptor(target, key) : desc, d;
+        if (typeof Reflect === "object" && typeof Reflect.decorate === "function") r = Reflect.decorate(decorators, target, key, desc);
+        else for (var i = decorators.length - 1; i >= 0; i--) if (d = decorators[i]) r = (c < 3 ? d(r) : c > 3 ? d(target, key, r) : d(target, key)) || r;
+        return c > 3 && r && Object.defineProperty(target, key, r), r;
+    };
+
+    __param = function (paramIndex, decorator) {
+        return function (target, key) { decorator(target, key, paramIndex); }
+    };
+
+    __esDecorate = function (ctor, descriptorIn, decorators, contextIn, initializers, extraInitializers) {
+        function accept(f) { if (f !== void 0 && typeof f !== "function") throw new TypeError("Function expected"); return f; }
+        var kind = contextIn.kind, key = kind === "getter" ? "get" : kind === "setter" ? "set" : "value";
+        var target = !descriptorIn && ctor ? contextIn["static"] ? ctor : ctor.prototype : null;
+        var descriptor = descriptorIn || (target ? Object.getOwnPropertyDescriptor(target, contextIn.name) : {});
+        var _, done = false;
+        for (var i = decorators.length - 1; i >= 0; i--) {
+            var context = {};
+            for (var p in contextIn) context[p] = p === "access" ? {} : contextIn[p];
+            for (var p in contextIn.access) context.access[p] = contextIn.access[p];
+            context.addInitializer = function (f) { if (done) throw new TypeError("Cannot add initializers after decoration has completed"); extraInitializers.push(accept(f || null)); };
+            var result = (0, decorators[i])(kind === "accessor" ? { get: descriptor.get, set: descriptor.set } : descriptor[key], context);
+            if (kind === "accessor") {
+                if (result === void 0) continue;
+                if (result === null || typeof result !== "object") throw new TypeError("Object expected");
+                if (_ = accept(result.get)) descriptor.get = _;
+                if (_ = accept(result.set)) descriptor.set = _;
+                if (_ = accept(result.init)) initializers.unshift(_);
+            }
+            else if (_ = accept(result)) {
+                if (kind === "field") initializers.unshift(_);
+                else descriptor[key] = _;
+            }
+        }
+        if (target) Object.defineProperty(target, contextIn.name, descriptor);
+        done = true;
+    };
+
+    __runInitializers = function (thisArg, initializers, value) {
+        var useValue = arguments.length > 2;
+        for (var i = 0; i < initializers.length; i++) {
+            value = useValue ? initializers[i].call(thisArg, value) : initializers[i].call(thisArg);
+        }
+        return useValue ? value : void 0;
+    };
+
+    __propKey = function (x) {
+        return typeof x === "symbol" ? x : "".concat(x);
+    };
+
+    __setFunctionName = function (f, name, prefix) {
+        if (typeof name === "symbol") name = name.description ? "[".concat(name.description, "]") : "";
+        return Object.defineProperty(f, "name", { configurable: true, value: prefix ? "".concat(prefix, " ", name) : name });
+    };
+
+    __metadata = function (metadataKey, metadataValue) {
+        if (typeof Reflect === "object" && typeof Reflect.metadata === "function") return Reflect.metadata(metadataKey, metadataValue);
+    };
+
+    __awaiter = function (thisArg, _arguments, P, generator) {
+        function adopt(value) { return value instanceof P ? value : new P(function (resolve) { resolve(value); }); }
+        return new (P || (P = Promise))(function (resolve, reject) {
+            function fulfilled(value) { try { step(generator.next(value)); } catch (e) { reject(e); } }
+            function rejected(value) { try { step(generator["throw"](value)); } catch (e) { reject(e); } }
+            function step(result) { result.done ? resolve(result.value) : adopt(result.value).then(fulfilled, rejected); }
+            step((generator = generator.apply(thisArg, _arguments || [])).next());
+        });
+    };
+
+    __generator = function (thisArg, body) {
+        var _ = { label: 0, sent: function() { if (t[0] & 1) throw t[1]; return t[1]; }, trys: [], ops: [] }, f, y, t, g;
+        return g = { next: verb(0), "throw": verb(1), "return": verb(2) }, typeof Symbol === "function" && (g[Symbol.iterator] = function() { return this; }), g;
+        function verb(n) { return function (v) { return step([n, v]); }; }
+        function step(op) {
+            if (f) throw new TypeError("Generator is already executing.");
+            while (g && (g = 0, op[0] && (_ = 0)), _) try {
+                if (f = 1, y && (t = op[0] & 2 ? y["return"] : op[0] ? y["throw"] || ((t = y["return"]) && t.call(y), 0) : y.next) && !(t = t.call(y, op[1])).done) return t;
+                if (y = 0, t) op = [op[0] & 2, t.value];
+                switch (op[0]) {
+                    case 0: case 1: t = op; break;
+                    case 4: _.label++; return { value: op[1], done: false };
+                    case 5: _.label++; y = op[1]; op = [0]; continue;
+                    case 7: op = _.ops.pop(); _.trys.pop(); continue;
+                    default:
+                        if (!(t = _.trys, t = t.length > 0 && t[t.length - 1]) && (op[0] === 6 || op[0] === 2)) { _ = 0; continue; }
+                        if (op[0] === 3 && (!t || (op[1] > t[0] && op[1] < t[3]))) { _.label = op[1]; break; }
+                        if (op[0] === 6 && _.label < t[1]) { _.label = t[1]; t = op; break; }
+                        if (t && _.label < t[2]) { _.label = t[2]; _.ops.push(op); break; }
+                        if (t[2]) _.ops.pop();
+                        _.trys.pop(); continue;
+                }
+                op = body.call(thisArg, _);
+            } catch (e) { op = [6, e]; y = 0; } finally { f = t = 0; }
+            if (op[0] & 5) throw op[1]; return { value: op[0] ? op[1] : void 0, done: true };
+        }
+    };
+
+    __exportStar = function(m, o) {
+        for (var p in m) if (p !== "default" && !Object.prototype.hasOwnProperty.call(o, p)) __createBinding(o, m, p);
+    };
+
+    __createBinding = Object.create ? (function(o, m, k, k2) {
+        if (k2 === undefined) k2 = k;
+        var desc = Object.getOwnPropertyDescriptor(m, k);
+        if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
+            desc = { enumerable: true, get: function() { return m[k]; } };
+        }
+        Object.defineProperty(o, k2, desc);
+    }) : (function(o, m, k, k2) {
+        if (k2 === undefined) k2 = k;
+        o[k2] = m[k];
+    });
+
+    __values = function (o) {
+        var s = typeof Symbol === "function" && Symbol.iterator, m = s && o[s], i = 0;
+        if (m) return m.call(o);
+        if (o && typeof o.length === "number") return {
+            next: function () {
+                if (o && i >= o.length) o = void 0;
+                return { value: o && o[i++], done: !o };
+            }
+        };
+        throw new TypeError(s ? "Object is not iterable." : "Symbol.iterator is not defined.");
+    };
+
+    __read = function (o, n) {
+        var m = typeof Symbol === "function" && o[Symbol.iterator];
+        if (!m) return o;
+        var i = m.call(o), r, ar = [], e;
+        try {
+            while ((n === void 0 || n-- > 0) && !(r = i.next()).done) ar.push(r.value);
+        }
+        catch (error) { e = { error: error }; }
+        finally {
+            try {
+                if (r && !r.done && (m = i["return"])) m.call(i);
+            }
+            finally { if (e) throw e.error; }
+        }
+        return ar;
+    };
+
+    /** @deprecated */
+    __spread = function () {
+        for (var ar = [], i = 0; i < arguments.length; i++)
+            ar = ar.concat(__read(arguments[i]));
+        return ar;
+    };
+
+    /** @deprecated */
+    __spreadArrays = function () {
+        for (var s = 0, i = 0, il = arguments.length; i < il; i++) s += arguments[i].length;
+        for (var r = Array(s), k = 0, i = 0; i < il; i++)
+            for (var a = arguments[i], j = 0, jl = a.length; j < jl; j++, k++)
+                r[k] = a[j];
+        return r;
+    };
+
+    __spreadArray = function (to, from, pack) {
+        if (pack || arguments.length === 2) for (var i = 0, l = from.length, ar; i < l; i++) {
+            if (ar || !(i in from)) {
+                if (!ar) ar = Array.prototype.slice.call(from, 0, i);
+                ar[i] = from[i];
+            }
+        }
+        return to.concat(ar || Array.prototype.slice.call(from));
+    };
+
+    __await = function (v) {
+        return this instanceof __await ? (this.v = v, this) : new __await(v);
+    };
+
+    __asyncGenerator = function (thisArg, _arguments, generator) {
+        if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
+        var g = generator.apply(thisArg, _arguments || []), i, q = [];
+        return i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i;
+        function verb(n) { if (g[n]) i[n] = function (v) { return new Promise(function (a, b) { q.push([n, v, a, b]) > 1 || resume(n, v); }); }; }
+        function resume(n, v) { try { step(g[n](v)); } catch (e) { settle(q[0][3], e); } }
+        function step(r) { r.value instanceof __await ? Promise.resolve(r.value.v).then(fulfill, reject) : settle(q[0][2], r);  }
+        function fulfill(value) { resume("next", value); }
+        function reject(value) { resume("throw", value); }
+        function settle(f, v) { if (f(v), q.shift(), q.length) resume(q[0][0], q[0][1]); }
+    };
+
+    __asyncDelegator = function (o) {
+        var i, p;
+        return i = {}, verb("next"), verb("throw", function (e) { throw e; }), verb("return"), i[Symbol.iterator] = function () { return this; }, i;
+        function verb(n, f) { i[n] = o[n] ? function (v) { return (p = !p) ? { value: __await(o[n](v)), done: false } : f ? f(v) : v; } : f; }
+    };
+
+    __asyncValues = function (o) {
+        if (!Symbol.asyncIterator) throw new TypeError("Symbol.asyncIterator is not defined.");
+        var m = o[Symbol.asyncIterator], i;
+        return m ? m.call(o) : (o = typeof __values === "function" ? __values(o) : o[Symbol.iterator](), i = {}, verb("next"), verb("throw"), verb("return"), i[Symbol.asyncIterator] = function () { return this; }, i);
+        function verb(n) { i[n] = o[n] && function (v) { return new Promise(function (resolve, reject) { v = o[n](v), settle(resolve, reject, v.done, v.value); }); }; }
+        function settle(resolve, reject, d, v) { Promise.resolve(v).then(function(v) { resolve({ value: v, done: d }); }, reject); }
+    };
+
+    __makeTemplateObject = function (cooked, raw) {
+        if (Object.defineProperty) { Object.defineProperty(cooked, "raw", { value: raw }); } else { cooked.raw = raw; }
+        return cooked;
+    };
+
+    var __setModuleDefault = Object.create ? (function(o, v) {
+        Object.defineProperty(o, "default", { enumerable: true, value: v });
+    }) : function(o, v) {
+        o["default"] = v;
+    };
+
+    __importStar = function (mod) {
+        if (mod && mod.__esModule) return mod;
+        var result = {};
+        if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
+        __setModuleDefault(result, mod);
+        return result;
+    };
+
+    __importDefault = function (mod) {
+        return (mod && mod.__esModule) ? mod : { "default": mod };
+    };
+
+    __classPrivateFieldGet = function (receiver, state, kind, f) {
+        if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a getter");
+        if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot read private member from an object whose class did not declare it");
+        return kind === "m" ? f : kind === "a" ? f.call(receiver) : f ? f.value : state.get(receiver);
+    };
+
+    __classPrivateFieldSet = function (receiver, state, value, kind, f) {
+        if (kind === "m") throw new TypeError("Private method is not writable");
+        if (kind === "a" && !f) throw new TypeError("Private accessor was defined without a setter");
+        if (typeof state === "function" ? receiver !== state || !f : !state.has(receiver)) throw new TypeError("Cannot write private member to an object whose class did not declare it");
+        return (kind === "a" ? f.call(receiver, value) : f ? f.value = value : state.set(receiver, value)), value;
+    };
+
+    __classPrivateFieldIn = function (state, receiver) {
+        if (receiver === null || (typeof receiver !== "object" && typeof receiver !== "function")) throw new TypeError("Cannot use 'in' operator on non-object");
+        return typeof state === "function" ? receiver === state : state.has(receiver);
+    };
+
+    __addDisposableResource = function (env, value, async) {
+        if (value !== null && value !== void 0) {
+            if (typeof value !== "object" && typeof value !== "function") throw new TypeError("Object expected.");
+            var dispose;
+            if (async) {
+                if (!Symbol.asyncDispose) throw new TypeError("Symbol.asyncDispose is not defined.");
+                dispose = value[Symbol.asyncDispose];
+            }
+            if (dispose === void 0) {
+                if (!Symbol.dispose) throw new TypeError("Symbol.dispose is not defined.");
+                dispose = value[Symbol.dispose];
+            }
+            if (typeof dispose !== "function") throw new TypeError("Object not disposable.");
+            env.stack.push({ value: value, dispose: dispose, async: async });
+        }
+        else if (async) {
+            env.stack.push({ async: true });
+        }
+        return value;
+    };
+
+    var _SuppressedError = typeof SuppressedError === "function" ? SuppressedError : function (error, suppressed, message) {
+        var e = new Error(message);
+        return e.name = "SuppressedError", e.error = error, e.suppressed = suppressed, e;
+    };
+
+    __disposeResources = function (env) {
+        function fail(e) {
+            env.error = env.hasError ? new _SuppressedError(e, env.error, "An error was suppressed during disposal.") : e;
+            env.hasError = true;
+        }
+        function next() {
+            while (env.stack.length) {
+                var rec = env.stack.pop();
+                try {
+                    var result = rec.dispose && rec.dispose.call(rec.value);
+                    if (rec.async) return Promise.resolve(result).then(next, function(e) { fail(e); return next(); });
+                }
+                catch (e) {
+                    fail(e);
+                }
+            }
+            if (env.hasError) throw env.error;
+        }
+        return next();
+    };
+
+    exporter("__extends", __extends);
+    exporter("__assign", __assign);
+    exporter("__rest", __rest);
+    exporter("__decorate", __decorate);
+    exporter("__param", __param);
+    exporter("__esDecorate", __esDecorate);
+    exporter("__runInitializers", __runInitializers);
+    exporter("__propKey", __propKey);
+    exporter("__setFunctionName", __setFunctionName);
+    exporter("__metadata", __metadata);
+    exporter("__awaiter", __awaiter);
+    exporter("__generator", __generator);
+    exporter("__exportStar", __exportStar);
+    exporter("__createBinding", __createBinding);
+    exporter("__values", __values);
+    exporter("__read", __read);
+    exporter("__spread", __spread);
+    exporter("__spreadArrays", __spreadArrays);
+    exporter("__spreadArray", __spreadArray);
+    exporter("__await", __await);
+    exporter("__asyncGenerator", __asyncGenerator);
+    exporter("__asyncDelegator", __asyncDelegator);
+    exporter("__asyncValues", __asyncValues);
+    exporter("__makeTemplateObject", __makeTemplateObject);
+    exporter("__importStar", __importStar);
+    exporter("__importDefault", __importDefault);
+    exporter("__classPrivateFieldGet", __classPrivateFieldGet);
+    exporter("__classPrivateFieldSet", __classPrivateFieldSet);
+    exporter("__classPrivateFieldIn", __classPrivateFieldIn);
+    exporter("__addDisposableResource", __addDisposableResource);
+    exporter("__disposeResources", __disposeResources);
+});
diff --git a/igv_component/node_modules/typical/LICENSE b/igv_component/node_modules/typical/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..700561a5e23e90694da01df6f8f09ee295bf9977
--- /dev/null
+++ b/igv_component/node_modules/typical/LICENSE
@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2014-19 Lloyd Brookes <75pound@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
diff --git a/igv_component/node_modules/typical/README.hbs b/igv_component/node_modules/typical/README.hbs
new file mode 100644
index 0000000000000000000000000000000000000000..bb092a1f3da6af5ad9c7f7a407b69b0f822d740d
--- /dev/null
+++ b/igv_component/node_modules/typical/README.hbs
@@ -0,0 +1,40 @@
+[![view on npm](http://img.shields.io/npm/v/typical.svg)](https://www.npmjs.org/package/typical)
+[![npm module downloads](http://img.shields.io/npm/dt/typical.svg)](https://www.npmjs.org/package/typical)
+[![Build Status](https://travis-ci.org/75lb/typical.svg?branch=master)](https://travis-ci.org/75lb/typical)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/typical/badge.svg?branch=master)](https://coveralls.io/github/75lb/typical?branch=master)
+[![Dependency Status](https://badgen.net/david/dep/75lb/typical)](https://david-dm.org/75lb/typical)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+{{>main}}
+
+## Load anywhere
+
+This library is compatible with Node.js, the Web and any style of module loader. It can be loaded anywhere, natively without transpilation.
+
+Node.js:
+
+```js
+const typical = require('typical')
+```
+
+Within Node.js with ECMAScript Module support enabled:
+
+```js
+import typical from 'typical'
+```
+
+Within a modern browser ECMAScript Module:
+
+```js
+import typical from './node_modules/typical/index.mjs'
+```
+
+Old browser (adds `window.typical`):
+
+```html
+<script nomodule src="./node_modules/typical/dist/index.js"></script>
+```
+
+* * *
+
+&copy; 2014-19 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/typical/README.md b/igv_component/node_modules/typical/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..cc64654c337a783af10d9a70d8a0ae7b094982c8
--- /dev/null
+++ b/igv_component/node_modules/typical/README.md
@@ -0,0 +1,277 @@
+[![view on npm](http://img.shields.io/npm/v/typical.svg)](https://www.npmjs.org/package/typical)
+[![npm module downloads](http://img.shields.io/npm/dt/typical.svg)](https://www.npmjs.org/package/typical)
+[![Build Status](https://travis-ci.org/75lb/typical.svg?branch=master)](https://travis-ci.org/75lb/typical)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/typical/badge.svg?branch=master)](https://coveralls.io/github/75lb/typical?branch=master)
+[![Dependency Status](https://badgen.net/david/dep/75lb/typical)](https://david-dm.org/75lb/typical)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+<a name="module_typical"></a>
+
+## typical
+For type-checking Javascript values.
+
+**Example**  
+```js
+const t = require('typical')
+```
+
+* [typical](#module_typical)
+    * [.isNumber(n)](#module_typical.isNumber) ⇒ <code>boolean</code>
+    * [.isPlainObject(input)](#module_typical.isPlainObject) ⇒ <code>boolean</code>
+    * [.isArrayLike(input)](#module_typical.isArrayLike) ⇒ <code>boolean</code>
+    * [.isObject(input)](#module_typical.isObject) ⇒ <code>boolean</code>
+    * [.isDefined(input)](#module_typical.isDefined) ⇒ <code>boolean</code>
+    * [.isString(input)](#module_typical.isString) ⇒ <code>boolean</code>
+    * [.isBoolean(input)](#module_typical.isBoolean) ⇒ <code>boolean</code>
+    * [.isFunction(input)](#module_typical.isFunction) ⇒ <code>boolean</code>
+    * [.isClass(input)](#module_typical.isClass) ⇒ <code>boolean</code>
+    * [.isPrimitive(input)](#module_typical.isPrimitive) ⇒ <code>boolean</code>
+    * [.isPromise(input)](#module_typical.isPromise) ⇒ <code>boolean</code>
+    * [.isIterable(input)](#module_typical.isIterable) ⇒ <code>boolean</code>
+
+<a name="module_typical.isNumber"></a>
+
+### t.isNumber(n) ⇒ <code>boolean</code>
+Returns true if input is a number
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| n | <code>\*</code> | the input to test |
+
+**Example**  
+```js
+> t.isNumber(0)
+true
+> t.isNumber(1)
+true
+> t.isNumber(1.1)
+true
+> t.isNumber(0xff)
+true
+> t.isNumber(0644)
+true
+> t.isNumber(6.2e5)
+true
+> t.isNumber(NaN)
+false
+> t.isNumber(Infinity)
+false
+```
+<a name="module_typical.isPlainObject"></a>
+
+### t.isPlainObject(input) ⇒ <code>boolean</code>
+A plain object is a simple object literal, it is not an instance of a class. Returns true if the input `typeof` is `object` and directly decends from `Object`.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+**Example**  
+```js
+> t.isPlainObject({ something: 'one' })
+true
+> t.isPlainObject(new Date())
+false
+> t.isPlainObject([ 0, 1 ])
+false
+> t.isPlainObject(/test/)
+false
+> t.isPlainObject(1)
+false
+> t.isPlainObject('one')
+false
+> t.isPlainObject(null)
+false
+> t.isPlainObject((function * () {})())
+false
+> t.isPlainObject(function * () {})
+false
+```
+<a name="module_typical.isArrayLike"></a>
+
+### t.isArrayLike(input) ⇒ <code>boolean</code>
+An array-like value has all the properties of an array, but is not an array instance. Examples in the `arguments` object. Returns true if the input value is an object, not null and has a `length` property with a numeric value.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+**Example**  
+```js
+function sum(x, y){
+    console.log(t.isArrayLike(arguments))
+    // prints `true`
+}
+```
+<a name="module_typical.isObject"></a>
+
+### t.isObject(input) ⇒ <code>boolean</code>
+returns true if the typeof input is `'object'`, but not null!
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isDefined"></a>
+
+### t.isDefined(input) ⇒ <code>boolean</code>
+Returns true if the input value is defined
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isString"></a>
+
+### t.isString(input) ⇒ <code>boolean</code>
+Returns true if the input value is a string
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isBoolean"></a>
+
+### t.isBoolean(input) ⇒ <code>boolean</code>
+Returns true if the input value is a boolean
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isFunction"></a>
+
+### t.isFunction(input) ⇒ <code>boolean</code>
+Returns true if the input value is a function
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isClass"></a>
+
+### t.isClass(input) ⇒ <code>boolean</code>
+Returns true if the input value is an es2015 `class`.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isPrimitive"></a>
+
+### t.isPrimitive(input) ⇒ <code>boolean</code>
+Returns true if the input is a string, number, symbol, boolean, null or undefined value.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isPromise"></a>
+
+### t.isPromise(input) ⇒ <code>boolean</code>
+Returns true if the input is a Promise.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isIterable"></a>
+
+### t.isIterable(input) ⇒ <code>boolean</code>
+Returns true if the input is an iterable (`Map`, `Set`, `Array`, Generator etc.).
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+**Example**  
+```js
+> t.isIterable('string')
+true
+> t.isIterable(new Map())
+true
+> t.isIterable([])
+true
+> t.isIterable((function * () {})())
+true
+> t.isIterable(Promise.resolve())
+false
+> t.isIterable(Promise)
+false
+> t.isIterable(true)
+false
+> t.isIterable({})
+false
+> t.isIterable(0)
+false
+> t.isIterable(1.1)
+false
+> t.isIterable(NaN)
+false
+> t.isIterable(Infinity)
+false
+> t.isIterable(function () {})
+false
+> t.isIterable(Date)
+false
+> t.isIterable()
+false
+> t.isIterable({ then: function () {} })
+false
+```
+
+## Load anywhere
+
+This library is compatible with Node.js, the Web and any style of module loader. It can be loaded anywhere, natively without transpilation.
+
+Node.js:
+
+```js
+const typical = require('typical')
+```
+
+Within Node.js with ECMAScript Module support enabled:
+
+```js
+import typical from 'typical'
+```
+
+Within a modern browser ECMAScript Module:
+
+```js
+import typical from './node_modules/typical/index.mjs'
+```
+
+Old browser (adds `window.typical`):
+
+```html
+<script nomodule src="./node_modules/typical/dist/index.js"></script>
+```
+
+* * *
+
+&copy; 2014-19 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/typical/dist/index.js b/igv_component/node_modules/typical/dist/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..81689319f0caad14064e776452873a6f5d04337e
--- /dev/null
+++ b/igv_component/node_modules/typical/dist/index.js
@@ -0,0 +1,255 @@
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? module.exports = factory() :
+  typeof define === 'function' && define.amd ? define(factory) :
+  (global = global || self, global.typical = factory());
+}(this, function () { 'use strict';
+
+  /**
+   * For type-checking Javascript values.
+   * @module typical
+   * @typicalname t
+   * @example
+   * const t = require('typical')
+   */
+
+  /**
+   * Returns true if input is a number
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   * @example
+   * > t.isNumber(0)
+   * true
+   * > t.isNumber(1)
+   * true
+   * > t.isNumber(1.1)
+   * true
+   * > t.isNumber(0xff)
+   * true
+   * > t.isNumber(0644)
+   * true
+   * > t.isNumber(6.2e5)
+   * true
+   * > t.isNumber(NaN)
+   * false
+   * > t.isNumber(Infinity)
+   * false
+   */
+  function isNumber (n) {
+    return !isNaN(parseFloat(n)) && isFinite(n)
+  }
+
+  /**
+   * A plain object is a simple object literal, it is not an instance of a class. Returns true if the input `typeof` is `object` and directly decends from `Object`.
+   *
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   * @example
+   * > t.isPlainObject({ something: 'one' })
+   * true
+   * > t.isPlainObject(new Date())
+   * false
+   * > t.isPlainObject([ 0, 1 ])
+   * false
+   * > t.isPlainObject(/test/)
+   * false
+   * > t.isPlainObject(1)
+   * false
+   * > t.isPlainObject('one')
+   * false
+   * > t.isPlainObject(null)
+   * false
+   * > t.isPlainObject((function * () {})())
+   * false
+   * > t.isPlainObject(function * () {})
+   * false
+   */
+  function isPlainObject (input) {
+    return input !== null && typeof input === 'object' && input.constructor === Object
+  }
+
+  /**
+   * An array-like value has all the properties of an array, but is not an array instance. Examples in the `arguments` object. Returns true if the input value is an object, not null and has a `length` property with a numeric value.
+   *
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   * @example
+   * function sum(x, y){
+   *     console.log(t.isArrayLike(arguments))
+   *     // prints `true`
+   * }
+   */
+  function isArrayLike (input) {
+    return isObject(input) && typeof input.length === 'number'
+  }
+
+  /**
+   * returns true if the typeof input is `'object'`, but not null!
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isObject (input) {
+    return typeof input === 'object' && input !== null
+  }
+
+  /**
+   * Returns true if the input value is defined
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isDefined (input) {
+    return typeof input !== 'undefined'
+  }
+
+  /**
+   * Returns true if the input value is a string
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isString (input) {
+    return typeof input === 'string'
+  }
+
+  /**
+   * Returns true if the input value is a boolean
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isBoolean (input) {
+    return typeof input === 'boolean'
+  }
+
+  /**
+   * Returns true if the input value is a function
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isFunction (input) {
+    return typeof input === 'function'
+  }
+
+  /**
+   * Returns true if the input value is an es2015 `class`.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isClass (input) {
+    if (isFunction(input)) {
+      return /^class /.test(Function.prototype.toString.call(input))
+    } else {
+      return false
+    }
+  }
+
+  /**
+   * Returns true if the input is a string, number, symbol, boolean, null or undefined value.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isPrimitive (input) {
+    if (input === null) return true
+    switch (typeof input) {
+      case 'string':
+      case 'number':
+      case 'symbol':
+      case 'undefined':
+      case 'boolean':
+        return true
+      default:
+        return false
+    }
+  }
+
+  /**
+   * Returns true if the input is a Promise.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isPromise (input) {
+    if (input) {
+      const isPromise = isDefined(Promise) && input instanceof Promise;
+      const isThenable = input.then && typeof input.then === 'function';
+      return !!(isPromise || isThenable)
+    } else {
+      return false
+    }
+  }
+
+  /**
+   * Returns true if the input is an iterable (`Map`, `Set`, `Array`, Generator etc.).
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   * @example
+   * > t.isIterable('string')
+   * true
+   * > t.isIterable(new Map())
+   * true
+   * > t.isIterable([])
+   * true
+   * > t.isIterable((function * () {})())
+   * true
+   * > t.isIterable(Promise.resolve())
+   * false
+   * > t.isIterable(Promise)
+   * false
+   * > t.isIterable(true)
+   * false
+   * > t.isIterable({})
+   * false
+   * > t.isIterable(0)
+   * false
+   * > t.isIterable(1.1)
+   * false
+   * > t.isIterable(NaN)
+   * false
+   * > t.isIterable(Infinity)
+   * false
+   * > t.isIterable(function () {})
+   * false
+   * > t.isIterable(Date)
+   * false
+   * > t.isIterable()
+   * false
+   * > t.isIterable({ then: function () {} })
+   * false
+   */
+  function isIterable (input) {
+    if (input === null || !isDefined(input)) {
+      return false
+    } else {
+      return (
+        typeof input[Symbol.iterator] === 'function' ||
+        typeof input[Symbol.asyncIterator] === 'function'
+      )
+    }
+  }
+
+  var index = {
+    isNumber,
+    isString,
+    isBoolean,
+    isPlainObject,
+    isArrayLike,
+    isObject,
+    isDefined,
+    isFunction,
+    isClass,
+    isPrimitive,
+    isPromise,
+    isIterable
+  };
+
+  return index;
+
+}));
diff --git a/igv_component/node_modules/typical/index.mjs b/igv_component/node_modules/typical/index.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..e3ef5bb95da8464d18f362a4444b3bf1ef06c05e
--- /dev/null
+++ b/igv_component/node_modules/typical/index.mjs
@@ -0,0 +1,245 @@
+/**
+ * For type-checking Javascript values.
+ * @module typical
+ * @typicalname t
+ * @example
+ * const t = require('typical')
+ */
+
+/**
+ * Returns true if input is a number
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isNumber(0)
+ * true
+ * > t.isNumber(1)
+ * true
+ * > t.isNumber(1.1)
+ * true
+ * > t.isNumber(0xff)
+ * true
+ * > t.isNumber(0644)
+ * true
+ * > t.isNumber(6.2e5)
+ * true
+ * > t.isNumber(NaN)
+ * false
+ * > t.isNumber(Infinity)
+ * false
+ */
+function isNumber (n) {
+  return !isNaN(parseFloat(n)) && isFinite(n)
+}
+
+/**
+ * A plain object is a simple object literal, it is not an instance of a class. Returns true if the input `typeof` is `object` and directly decends from `Object`.
+ *
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isPlainObject({ something: 'one' })
+ * true
+ * > t.isPlainObject(new Date())
+ * false
+ * > t.isPlainObject([ 0, 1 ])
+ * false
+ * > t.isPlainObject(/test/)
+ * false
+ * > t.isPlainObject(1)
+ * false
+ * > t.isPlainObject('one')
+ * false
+ * > t.isPlainObject(null)
+ * false
+ * > t.isPlainObject((function * () {})())
+ * false
+ * > t.isPlainObject(function * () {})
+ * false
+ */
+function isPlainObject (input) {
+  return input !== null && typeof input === 'object' && input.constructor === Object
+}
+
+/**
+ * An array-like value has all the properties of an array, but is not an array instance. Examples in the `arguments` object. Returns true if the input value is an object, not null and has a `length` property with a numeric value.
+ *
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * function sum(x, y){
+ *     console.log(t.isArrayLike(arguments))
+ *     // prints `true`
+ * }
+ */
+function isArrayLike (input) {
+  return isObject(input) && typeof input.length === 'number'
+}
+
+/**
+ * returns true if the typeof input is `'object'`, but not null!
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isObject (input) {
+  return typeof input === 'object' && input !== null
+}
+
+/**
+ * Returns true if the input value is defined
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isDefined (input) {
+  return typeof input !== 'undefined'
+}
+
+/**
+ * Returns true if the input value is a string
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isString (input) {
+  return typeof input === 'string'
+}
+
+/**
+ * Returns true if the input value is a boolean
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isBoolean (input) {
+  return typeof input === 'boolean'
+}
+
+/**
+ * Returns true if the input value is a function
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isFunction (input) {
+  return typeof input === 'function'
+}
+
+/**
+ * Returns true if the input value is an es2015 `class`.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isClass (input) {
+  if (isFunction(input)) {
+    return /^class /.test(Function.prototype.toString.call(input))
+  } else {
+    return false
+  }
+}
+
+/**
+ * Returns true if the input is a string, number, symbol, boolean, null or undefined value.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isPrimitive (input) {
+  if (input === null) return true
+  switch (typeof input) {
+    case 'string':
+    case 'number':
+    case 'symbol':
+    case 'undefined':
+    case 'boolean':
+      return true
+    default:
+      return false
+  }
+}
+
+/**
+ * Returns true if the input is a Promise.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+function isPromise (input) {
+  if (input) {
+    const isPromise = isDefined(Promise) && input instanceof Promise
+    const isThenable = input.then && typeof input.then === 'function'
+    return !!(isPromise || isThenable)
+  } else {
+    return false
+  }
+}
+
+/**
+ * Returns true if the input is an iterable (`Map`, `Set`, `Array`, Generator etc.).
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isIterable('string')
+ * true
+ * > t.isIterable(new Map())
+ * true
+ * > t.isIterable([])
+ * true
+ * > t.isIterable((function * () {})())
+ * true
+ * > t.isIterable(Promise.resolve())
+ * false
+ * > t.isIterable(Promise)
+ * false
+ * > t.isIterable(true)
+ * false
+ * > t.isIterable({})
+ * false
+ * > t.isIterable(0)
+ * false
+ * > t.isIterable(1.1)
+ * false
+ * > t.isIterable(NaN)
+ * false
+ * > t.isIterable(Infinity)
+ * false
+ * > t.isIterable(function () {})
+ * false
+ * > t.isIterable(Date)
+ * false
+ * > t.isIterable()
+ * false
+ * > t.isIterable({ then: function () {} })
+ * false
+ */
+function isIterable (input) {
+  if (input === null || !isDefined(input)) {
+    return false
+  } else {
+    return (
+      typeof input[Symbol.iterator] === 'function' ||
+      typeof input[Symbol.asyncIterator] === 'function'
+    )
+  }
+}
+
+export default {
+  isNumber,
+  isString,
+  isBoolean,
+  isPlainObject,
+  isArrayLike,
+  isObject,
+  isDefined,
+  isFunction,
+  isClass,
+  isPrimitive,
+  isPromise,
+  isIterable
+}
diff --git a/igv_component/node_modules/typical/package.json b/igv_component/node_modules/typical/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..9642da08a68696b85742902c390b23be95a9426a
--- /dev/null
+++ b/igv_component/node_modules/typical/package.json
@@ -0,0 +1,55 @@
+{
+  "name": "typical",
+  "author": "Lloyd Brookes <75pound@gmail.com>",
+  "version": "4.0.0",
+  "description": "Robust Javascript type-checking",
+  "repository": "https://github.com/75lb/typical",
+  "license": "MIT",
+  "main": "dist/index.js",
+  "keywords": [
+    "type",
+    "checking",
+    "check",
+    "value",
+    "valid",
+    "is",
+    "number",
+    "object",
+    "plainobject",
+    "array",
+    "like",
+    "defined",
+    "string",
+    "boolean",
+    "function",
+    "promise",
+    "iterable",
+    "class",
+    "primitive"
+  ],
+  "engines": {
+    "node": ">=8"
+  },
+  "scripts": {
+    "test": "npm run test:js && npm run test:esm && npm run test:web",
+    "test:js": "rollup test.mjs -f cjs -o dist/test.js && rollup test-v10.mjs -f cjs -o dist/test-v10.js && test-runner dist/test*.js",
+    "test:esm": "esm-runner test*.mjs",
+    "test:web": "web-runner test.mjs",
+    "dist": "rollup index.mjs -f umd -n typical -o dist/index.js",
+    "docs": "jsdoc2md -c jsdoc.conf -t README.hbs index.mjs > README.md; echo",
+    "cover": "nyc --reporter=text-lcov test-runner test.js | coveralls"
+  },
+  "devDependencies": {
+    "@test-runner/web": "^0.1.4",
+    "coveralls": "^3.0.3",
+    "esm-runner": "^0.1.2",
+    "jsdoc-to-markdown": "^4.0.1",
+    "rollup": "^1.7.0",
+    "test-object-model": "^0.3.8",
+    "test-runner": "^0.6.0-14"
+  },
+  "files": [
+    "index.mjs",
+    "dist/index.js"
+  ]
+}
diff --git a/igv_component/node_modules/wordwrapjs/LICENSE b/igv_component/node_modules/wordwrapjs/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..9d2d6dbc3c0c1868cb4070f7c0af7a496f2f01f0
--- /dev/null
+++ b/igv_component/node_modules/wordwrapjs/LICENSE
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2015-21 Lloyd Brookes <75pound@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
diff --git a/igv_component/node_modules/wordwrapjs/README.hbs b/igv_component/node_modules/wordwrapjs/README.hbs
new file mode 100644
index 0000000000000000000000000000000000000000..29da6272e889afbebfc3edfcd013e501e1bf9302
--- /dev/null
+++ b/igv_component/node_modules/wordwrapjs/README.hbs
@@ -0,0 +1,61 @@
+[![view on npm](https://badgen.net/npm/v/wordwrapjs)](https://www.npmjs.org/package/wordwrapjs)
+[![npm module downloads](https://badgen.net/npm/dt/wordwrapjs)](https://www.npmjs.org/package/wordwrapjs)
+[![Gihub repo dependents](https://badgen.net/github/dependents-repo/75lb/wordwrapjs)](https://github.com/75lb/wordwrapjs/network/dependents?dependent_type=REPOSITORY)
+[![Gihub package dependents](https://badgen.net/github/dependents-pkg/75lb/wordwrapjs)](https://github.com/75lb/wordwrapjs/network/dependents?dependent_type=PACKAGE)
+[![Build Status](https://travis-ci.org/75lb/wordwrapjs.svg?branch=master)](https://travis-ci.org/75lb/wordwrapjs)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+# wordwrapjs
+
+Word wrapping, with a few features.
+
+- force-break option
+- wraps hypenated words
+- multilingual - wraps any language that uses whitespace for word separation.
+
+## Synopsis
+
+Wrap some text in a 20 character column.
+
+```js
+> wordwrap = require('wordwrapjs')
+
+> text = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.'
+
+> result = wordwrap.wrap(text, { width: 20 })
+```
+
+`result` now looks like this:
+```
+Lorem ipsum dolor
+sit amet,
+consectetur
+adipiscing elit, sed
+do eiusmod tempor
+incididunt ut labore
+et dolore magna
+aliqua.
+```
+
+By default, long words will not break. Unless you set the `break` option.
+```js
+> url = 'https://github.com/75lb/wordwrapjs'
+
+> wrap.lines(url, { width: 18 })
+[ 'https://github.com/75lb/wordwrapjs' ]
+
+> wrap.lines(url, { width: 18, break: true })
+[ 'https://github.com', '/75lb/wordwrapjs' ]
+```
+
+## API Reference
+
+{{#module name="wordwrapjs"}}
+{{>body~}}
+{{>member-index~}}
+{{>members~}}
+{{/module}}
+
+* * *
+
+&copy; 2015-21 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/wordwrapjs/README.md b/igv_component/node_modules/wordwrapjs/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..d04692a2077c7ff10f5b3ccaab4741b2202f08fe
--- /dev/null
+++ b/igv_component/node_modules/wordwrapjs/README.md
@@ -0,0 +1,115 @@
+[![view on npm](https://badgen.net/npm/v/wordwrapjs)](https://www.npmjs.org/package/wordwrapjs)
+[![npm module downloads](https://badgen.net/npm/dt/wordwrapjs)](https://www.npmjs.org/package/wordwrapjs)
+[![Gihub repo dependents](https://badgen.net/github/dependents-repo/75lb/wordwrapjs)](https://github.com/75lb/wordwrapjs/network/dependents?dependent_type=REPOSITORY)
+[![Gihub package dependents](https://badgen.net/github/dependents-pkg/75lb/wordwrapjs)](https://github.com/75lb/wordwrapjs/network/dependents?dependent_type=PACKAGE)
+[![Build Status](https://travis-ci.org/75lb/wordwrapjs.svg?branch=master)](https://travis-ci.org/75lb/wordwrapjs)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+# wordwrapjs
+
+Word wrapping, with a few features.
+
+- force-break option
+- wraps hypenated words
+- multilingual - wraps any language that uses whitespace for word separation.
+
+## Synopsis
+
+Wrap some text in a 20 character column.
+
+```js
+> wordwrap = require('wordwrapjs')
+
+> text = 'Lorem ipsum dolor sit amet, consectetur adipiscing elit, sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.'
+
+> result = wordwrap.wrap(text, { width: 20 })
+```
+
+`result` now looks like this:
+```
+Lorem ipsum dolor
+sit amet,
+consectetur
+adipiscing elit, sed
+do eiusmod tempor
+incididunt ut labore
+et dolore magna
+aliqua.
+```
+
+By default, long words will not break. Unless you set the `break` option.
+```js
+> url = 'https://github.com/75lb/wordwrapjs'
+
+> wrap.lines(url, { width: 18 })
+[ 'https://github.com/75lb/wordwrapjs' ]
+
+> wrap.lines(url, { width: 18, break: true })
+[ 'https://github.com', '/75lb/wordwrapjs' ]
+```
+
+## API Reference
+
+
+* [wordwrapjs](#module_wordwrapjs)
+    * [WordWrap](#exp_module_wordwrapjs--WordWrap) ⏏
+        * [.wrap(text, [options])](#module_wordwrapjs--WordWrap.wrap) ⇒ <code>string</code>
+        * [.lines(text, options)](#module_wordwrapjs--WordWrap.lines)
+        * [.isWrappable(text)](#module_wordwrapjs--WordWrap.isWrappable) ⇒ <code>boolean</code>
+        * [.getChunks(text)](#module_wordwrapjs--WordWrap.getChunks) ⇒ <code>Array.&lt;string&gt;</code>
+
+<a name="exp_module_wordwrapjs--WordWrap"></a>
+
+### WordWrap ⏏
+**Kind**: Exported class  
+<a name="module_wordwrapjs--WordWrap.wrap"></a>
+
+#### WordWrap.wrap(text, [options]) ⇒ <code>string</code>
+**Kind**: static method of [<code>WordWrap</code>](#exp_module_wordwrapjs--WordWrap)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| text | <code>string</code> | the input text to wrap |
+| [options] | <code>object</code> | optional configuration |
+| [options.width] | <code>number</code> | the max column width in characters (defaults to 30). |
+| [options.break] | <code>boolean</code> | if true, words exceeding the specified `width` will be forcefully broken |
+| [options.noTrim] | <code>boolean</code> | By default, each line output is trimmed. If `noTrim` is set, no line-trimming occurs - all whitespace from the input text is left in. |
+
+<a name="module_wordwrapjs--WordWrap.lines"></a>
+
+#### WordWrap.lines(text, options)
+Wraps the input text, returning an array of strings (lines).
+
+**Kind**: static method of [<code>WordWrap</code>](#exp_module_wordwrapjs--WordWrap)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| text | <code>string</code> | input text |
+| options | <code>object</code> | Accepts same options as constructor. |
+
+<a name="module_wordwrapjs--WordWrap.isWrappable"></a>
+
+#### WordWrap.isWrappable(text) ⇒ <code>boolean</code>
+Returns true if the input text would be wrapped if passed into `.wrap()`.
+
+**Kind**: static method of [<code>WordWrap</code>](#exp_module_wordwrapjs--WordWrap)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| text | <code>string</code> | input text |
+
+<a name="module_wordwrapjs--WordWrap.getChunks"></a>
+
+#### WordWrap.getChunks(text) ⇒ <code>Array.&lt;string&gt;</code>
+Splits the input text into an array of words and whitespace.
+
+**Kind**: static method of [<code>WordWrap</code>](#exp_module_wordwrapjs--WordWrap)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| text | <code>string</code> | input text |
+
+
+* * *
+
+&copy; 2015-21 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/wordwrapjs/index.js b/igv_component/node_modules/wordwrapjs/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..5ec85dbe57856f831cde14b7c50b3c712e583035
--- /dev/null
+++ b/igv_component/node_modules/wordwrapjs/index.js
@@ -0,0 +1,148 @@
+const os = require('os')
+const t = require('typical')
+
+/**
+ * @module wordwrapjs
+ */
+
+const re = {
+  chunk: /[^\s-]+?-\b|\S+|\s+|\r\n?|\n/g,
+  ansiEscapeSequence: /\u001b.*?m/g
+}
+
+/**
+ * @alias module:wordwrapjs
+ * @typicalname wordwrap
+ */
+class WordWrap {
+  constructor (text, options) {
+    options = options || {}
+    if (!t.isDefined(text)) text = ''
+
+    this._lines = String(text).split(/\r\n|\n/g)
+    this.options = options
+    this.options.width = options.width === undefined ? 30 : options.width
+  }
+
+  lines () {
+    const flatten = require('reduce-flatten')
+
+    /* trim each line of the supplied text */
+    return this._lines.map(trimLine.bind(this))
+
+      /* split each line into an array of chunks, else mark it empty */
+      .map(line => line.match(re.chunk) || [ '~~empty~~' ])
+
+      /* optionally, break each word on the line into pieces */
+      .map(lineWords => {
+        if (this.options.break) {
+          return lineWords.map(breakWord.bind(this))
+        } else {
+          return lineWords
+        }
+      })
+      .map(lineWords => lineWords.reduce(flatten, []))
+
+      /* transforming the line of words to one or more new lines wrapped to size */
+      .map(lineWords => {
+        return lineWords
+          .reduce((lines, word) => {
+            let currentLine = lines[lines.length - 1]
+            if (replaceAnsi(word).length + replaceAnsi(currentLine).length > this.options.width) {
+              lines.push(word)
+            } else {
+              lines[lines.length - 1] += word
+            }
+            return lines
+          }, [ '' ])
+      })
+      .reduce(flatten, [])
+
+      /* trim the wrapped lines */
+      .map(trimLine.bind(this))
+
+      /* filter out empty lines */
+      .filter(line => line.trim())
+
+      /* restore the user's original empty lines */
+      .map(line => line.replace('~~empty~~', ''))
+  }
+
+  wrap () {
+    return this.lines().join(os.EOL)
+  }
+
+  toString () {
+    return this.wrap()
+  }
+
+  /**
+   * @param {string} - the input text to wrap
+   * @param [options] {object} - optional configuration
+   * @param [options.width] {number} - the max column width in characters (defaults to 30).
+   * @param [options.break] {boolean} - if true, words exceeding the specified `width` will be forcefully broken
+   * @param [options.noTrim] {boolean} - By default, each line output is trimmed. If `noTrim` is set, no line-trimming occurs - all whitespace from the input text is left in.
+   * @return {string}
+   */
+  static wrap (text, options) {
+    const block = new this(text, options)
+    return block.wrap()
+  }
+
+  /**
+   * Wraps the input text, returning an array of strings (lines).
+   * @param {string} - input text
+   * @param {object} - Accepts same options as constructor.
+   */
+  static lines (text, options) {
+    const block = new this(text, options)
+    return block.lines()
+  }
+
+  /**
+   * Returns true if the input text would be wrapped if passed into `.wrap()`.
+   * @param {string} - input text
+   * @return {boolean}
+   */
+  static isWrappable (text) {
+    if (t.isDefined(text)) {
+      text = String(text)
+      var matches = text.match(re.chunk)
+      return matches ? matches.length > 1 : false
+    }
+  }
+
+  /**
+   * Splits the input text into an array of words and whitespace.
+   * @param {string} - input text
+   * @returns {string[]}
+   */
+  static getChunks (text) {
+    return text.match(re.chunk) || []
+  }
+}
+
+function trimLine (line) {
+  return this.options.noTrim ? line : line.trim()
+}
+
+function replaceAnsi (string) {
+  return string.replace(re.ansiEscapeSequence, '')
+}
+
+/* break a word into several pieces */
+function breakWord (word) {
+  if (replaceAnsi(word).length > this.options.width) {
+    const letters = word.split('')
+    let piece
+    const pieces = []
+    while ((piece = letters.splice(0, this.options.width)).length) {
+      pieces.push(piece.join(''))
+    }
+    return pieces
+  } else {
+    return word
+  }
+}
+
+module.exports = WordWrap
diff --git a/igv_component/node_modules/wordwrapjs/node_modules/typical/LICENSE b/igv_component/node_modules/wordwrapjs/node_modules/typical/LICENSE
new file mode 100644
index 0000000000000000000000000000000000000000..700561a5e23e90694da01df6f8f09ee295bf9977
--- /dev/null
+++ b/igv_component/node_modules/wordwrapjs/node_modules/typical/LICENSE
@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2014-19 Lloyd Brookes <75pound@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
diff --git a/igv_component/node_modules/wordwrapjs/node_modules/typical/README.hbs b/igv_component/node_modules/wordwrapjs/node_modules/typical/README.hbs
new file mode 100644
index 0000000000000000000000000000000000000000..bb092a1f3da6af5ad9c7f7a407b69b0f822d740d
--- /dev/null
+++ b/igv_component/node_modules/wordwrapjs/node_modules/typical/README.hbs
@@ -0,0 +1,40 @@
+[![view on npm](http://img.shields.io/npm/v/typical.svg)](https://www.npmjs.org/package/typical)
+[![npm module downloads](http://img.shields.io/npm/dt/typical.svg)](https://www.npmjs.org/package/typical)
+[![Build Status](https://travis-ci.org/75lb/typical.svg?branch=master)](https://travis-ci.org/75lb/typical)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/typical/badge.svg?branch=master)](https://coveralls.io/github/75lb/typical?branch=master)
+[![Dependency Status](https://badgen.net/david/dep/75lb/typical)](https://david-dm.org/75lb/typical)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+{{>main}}
+
+## Load anywhere
+
+This library is compatible with Node.js, the Web and any style of module loader. It can be loaded anywhere, natively without transpilation.
+
+Node.js:
+
+```js
+const typical = require('typical')
+```
+
+Within Node.js with ECMAScript Module support enabled:
+
+```js
+import typical from 'typical'
+```
+
+Within a modern browser ECMAScript Module:
+
+```js
+import typical from './node_modules/typical/index.mjs'
+```
+
+Old browser (adds `window.typical`):
+
+```html
+<script nomodule src="./node_modules/typical/dist/index.js"></script>
+```
+
+* * *
+
+&copy; 2014-19 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/wordwrapjs/node_modules/typical/README.md b/igv_component/node_modules/wordwrapjs/node_modules/typical/README.md
new file mode 100644
index 0000000000000000000000000000000000000000..6e3d513ceb7aea75148c8e5786fc4defbdd2839c
--- /dev/null
+++ b/igv_component/node_modules/wordwrapjs/node_modules/typical/README.md
@@ -0,0 +1,302 @@
+[![view on npm](http://img.shields.io/npm/v/typical.svg)](https://www.npmjs.org/package/typical)
+[![npm module downloads](http://img.shields.io/npm/dt/typical.svg)](https://www.npmjs.org/package/typical)
+[![Build Status](https://travis-ci.org/75lb/typical.svg?branch=master)](https://travis-ci.org/75lb/typical)
+[![Coverage Status](https://coveralls.io/repos/github/75lb/typical/badge.svg?branch=master)](https://coveralls.io/github/75lb/typical?branch=master)
+[![Dependency Status](https://badgen.net/david/dep/75lb/typical)](https://david-dm.org/75lb/typical)
+[![js-standard-style](https://img.shields.io/badge/code%20style-standard-brightgreen.svg)](https://github.com/feross/standard)
+
+<a name="module_typical"></a>
+
+## typical
+Isomorphic, functional type-checking for Javascript.
+
+**Example**  
+```js
+const t = require('typical')
+const allDefined = array.every(t.isDefined)
+```
+
+* [typical](#module_typical)
+    * [.isNumber(n)](#module_typical.isNumber) ⇒ <code>boolean</code>
+    * [.isPlainObject(input)](#module_typical.isPlainObject) ⇒ <code>boolean</code>
+    * [.isArrayLike(input)](#module_typical.isArrayLike) ⇒ <code>boolean</code>
+    * [.isObject(input)](#module_typical.isObject) ⇒ <code>boolean</code>
+    * [.isDefined(input)](#module_typical.isDefined) ⇒ <code>boolean</code>
+    * [.isUndefined(input)](#module_typical.isUndefined) ⇒ <code>boolean</code>
+    * [.isNull(input)](#module_typical.isNull) ⇒ <code>boolean</code>
+    * [.isDefinedValue(input)](#module_typical.isDefinedValue) ⇒ <code>boolean</code>
+    * [.isClass(input)](#module_typical.isClass) ⇒ <code>boolean</code>
+    * [.isPrimitive(input)](#module_typical.isPrimitive) ⇒ <code>boolean</code>
+    * [.isPromise(input)](#module_typical.isPromise) ⇒ <code>boolean</code>
+    * [.isIterable(input)](#module_typical.isIterable) ⇒ <code>boolean</code>
+    * [.isString(input)](#module_typical.isString) ⇒ <code>boolean</code>
+    * [.isFunction(input)](#module_typical.isFunction) ⇒ <code>boolean</code>
+
+<a name="module_typical.isNumber"></a>
+
+### t.isNumber(n) ⇒ <code>boolean</code>
+Returns true if input is a number. It is a more reasonable alternative to `typeof n` which returns `number` for `NaN` and `Infinity`.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| n | <code>\*</code> | the input to test |
+
+**Example**  
+```js
+> t.isNumber(0)
+true
+> t.isNumber(1)
+true
+> t.isNumber(1.1)
+true
+> t.isNumber(0xff)
+true
+> t.isNumber(0644)
+true
+> t.isNumber(6.2e5)
+true
+> t.isNumber(NaN)
+false
+> t.isNumber(Infinity)
+false
+```
+<a name="module_typical.isPlainObject"></a>
+
+### t.isPlainObject(input) ⇒ <code>boolean</code>
+A plain object is a simple object literal, it is not an instance of a class. Returns true if the input `typeof` is `object` and directly decends from `Object`.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+**Example**  
+```js
+> t.isPlainObject({ something: 'one' })
+true
+> t.isPlainObject(new Date())
+false
+> t.isPlainObject([ 0, 1 ])
+false
+> t.isPlainObject(/test/)
+false
+> t.isPlainObject(1)
+false
+> t.isPlainObject('one')
+false
+> t.isPlainObject(null)
+false
+> t.isPlainObject((function * () {})())
+false
+> t.isPlainObject(function * () {})
+false
+```
+<a name="module_typical.isArrayLike"></a>
+
+### t.isArrayLike(input) ⇒ <code>boolean</code>
+An array-like value has all the properties of an array yet is not an array instance. An example is the `arguments` object. Returns `true`` if the input value is an object, not `null`` and has a `length` property set with a numeric value.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+**Example**  
+```js
+function sum(x, y){
+  console.log(t.isArrayLike(arguments))
+  // prints `true`
+}
+```
+<a name="module_typical.isObject"></a>
+
+### t.isObject(input) ⇒ <code>boolean</code>
+Returns true if the typeof input is `'object'` but not null.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isDefined"></a>
+
+### t.isDefined(input) ⇒ <code>boolean</code>
+Returns true if the input value is defined.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isUndefined"></a>
+
+### t.isUndefined(input) ⇒ <code>boolean</code>
+Returns true if the input value is undefined.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isNull"></a>
+
+### t.isNull(input) ⇒ <code>boolean</code>
+Returns true if the input value is null.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isDefinedValue"></a>
+
+### t.isDefinedValue(input) ⇒ <code>boolean</code>
+Returns true if the input value is not one of `undefined`, `null`, or `NaN`.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isClass"></a>
+
+### t.isClass(input) ⇒ <code>boolean</code>
+Returns true if the input value is an ES2015 `class`.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isPrimitive"></a>
+
+### t.isPrimitive(input) ⇒ <code>boolean</code>
+Returns true if the input is a string, number, symbol, boolean, null or undefined value.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isPromise"></a>
+
+### t.isPromise(input) ⇒ <code>boolean</code>
+Returns true if the input is a Promise.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isIterable"></a>
+
+### t.isIterable(input) ⇒ <code>boolean</code>
+Returns true if the input is an iterable (`Map`, `Set`, `Array`, Generator etc.).
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+**Example**  
+```js
+> t.isIterable('string')
+true
+> t.isIterable(new Map())
+true
+> t.isIterable([])
+true
+> t.isIterable((function * () {})())
+true
+> t.isIterable(Promise.resolve())
+false
+> t.isIterable(Promise)
+false
+> t.isIterable(true)
+false
+> t.isIterable({})
+false
+> t.isIterable(0)
+false
+> t.isIterable(1.1)
+false
+> t.isIterable(NaN)
+false
+> t.isIterable(Infinity)
+false
+> t.isIterable(function () {})
+false
+> t.isIterable(Date)
+false
+> t.isIterable()
+false
+> t.isIterable({ then: function () {} })
+false
+```
+<a name="module_typical.isString"></a>
+
+### t.isString(input) ⇒ <code>boolean</code>
+Returns true if the input value is a string. The equivalent of `typeof input === 'string'` for use in funcitonal contexts.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+<a name="module_typical.isFunction"></a>
+
+### t.isFunction(input) ⇒ <code>boolean</code>
+Returns true if the input value is a function. The equivalent of `typeof input === 'function'` for use in funcitonal contexts.
+
+**Kind**: static method of [<code>typical</code>](#module_typical)  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| input | <code>\*</code> | the input to test |
+
+
+## Load anywhere
+
+This library is compatible with Node.js, the Web and any style of module loader. It can be loaded anywhere, natively without transpilation.
+
+Node.js:
+
+```js
+const typical = require('typical')
+```
+
+Within Node.js with ECMAScript Module support enabled:
+
+```js
+import typical from 'typical'
+```
+
+Within a modern browser ECMAScript Module:
+
+```js
+import typical from './node_modules/typical/index.mjs'
+```
+
+Old browser (adds `window.typical`):
+
+```html
+<script nomodule src="./node_modules/typical/dist/index.js"></script>
+```
+
+* * *
+
+&copy; 2014-19 Lloyd Brookes \<75pound@gmail.com\>. Documented by [jsdoc-to-markdown](https://github.com/jsdoc2md/jsdoc-to-markdown).
diff --git a/igv_component/node_modules/wordwrapjs/node_modules/typical/dist/index.js b/igv_component/node_modules/wordwrapjs/node_modules/typical/dist/index.js
new file mode 100644
index 0000000000000000000000000000000000000000..ed8b168638511d4db203730c6a592e2aa1f622a3
--- /dev/null
+++ b/igv_component/node_modules/wordwrapjs/node_modules/typical/dist/index.js
@@ -0,0 +1,295 @@
+(function (global, factory) {
+  typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
+  typeof define === 'function' && define.amd ? define(['exports'], factory) :
+  (global = global || self, factory(global.typical = {}));
+}(this, function (exports) { 'use strict';
+
+  /**
+   * Isomorphic, functional type-checking for Javascript.
+   * @module typical
+   * @typicalname t
+   * @example
+   * const t = require('typical')
+   * const allDefined = array.every(t.isDefined)
+   */
+
+  /**
+   * Returns true if input is a number. It is a more reasonable alternative to `typeof n` which returns `number` for `NaN` and `Infinity`.
+   *
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   * @example
+   * > t.isNumber(0)
+   * true
+   * > t.isNumber(1)
+   * true
+   * > t.isNumber(1.1)
+   * true
+   * > t.isNumber(0xff)
+   * true
+   * > t.isNumber(0644)
+   * true
+   * > t.isNumber(6.2e5)
+   * true
+   * > t.isNumber(NaN)
+   * false
+   * > t.isNumber(Infinity)
+   * false
+   */
+  function isNumber (n) {
+    return !isNaN(parseFloat(n)) && isFinite(n)
+  }
+
+  /**
+   * A plain object is a simple object literal, it is not an instance of a class. Returns true if the input `typeof` is `object` and directly decends from `Object`.
+   *
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   * @example
+   * > t.isPlainObject({ something: 'one' })
+   * true
+   * > t.isPlainObject(new Date())
+   * false
+   * > t.isPlainObject([ 0, 1 ])
+   * false
+   * > t.isPlainObject(/test/)
+   * false
+   * > t.isPlainObject(1)
+   * false
+   * > t.isPlainObject('one')
+   * false
+   * > t.isPlainObject(null)
+   * false
+   * > t.isPlainObject((function * () {})())
+   * false
+   * > t.isPlainObject(function * () {})
+   * false
+   */
+  function isPlainObject (input) {
+    return input !== null && typeof input === 'object' && input.constructor === Object
+  }
+
+  /**
+   * An array-like value has all the properties of an array yet is not an array instance. An example is the `arguments` object. Returns `true`` if the input value is an object, not `null`` and has a `length` property set with a numeric value.
+   *
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   * @example
+   * function sum(x, y){
+   *   console.log(t.isArrayLike(arguments))
+   *   // prints `true`
+   * }
+   */
+  function isArrayLike (input) {
+    return isObject(input) && typeof input.length === 'number'
+  }
+
+  /**
+   * Returns true if the typeof input is `'object'` but not null.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isObject (input) {
+    return typeof input === 'object' && input !== null
+  }
+
+  /**
+   * Returns true if the input value is defined.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isDefined (input) {
+    return typeof input !== 'undefined'
+  }
+
+  /**
+   * Returns true if the input value is undefined.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isUndefined (input) {
+    return !isDefined(input)
+  }
+
+  /**
+   * Returns true if the input value is null.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isNull (input) {
+   return input === null
+  }
+
+  /**
+   * Returns true if the input value is both defined and not null.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isDefinedValue (input) {
+   return isDefined(input) && !isNull(input) && !Number.isNaN(input)
+  }
+
+  /**
+   * Returns true if the input value is an ES2015 `class`.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isClass (input) {
+    if (typeof input === 'function') {
+      return /^class /.test(Function.prototype.toString.call(input))
+    } else {
+      return false
+    }
+  }
+
+  /**
+   * Returns true if the input is a string, number, symbol, boolean, null or undefined value.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isPrimitive (input) {
+    if (input === null) return true
+    switch (typeof input) {
+      case 'string':
+      case 'number':
+      case 'symbol':
+      case 'undefined':
+      case 'boolean':
+        return true
+      default:
+        return false
+    }
+  }
+
+  /**
+   * Returns true if the input is a Promise.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isPromise (input) {
+    if (input) {
+      const isPromise = isDefined(Promise) && input instanceof Promise;
+      const isThenable = input.then && typeof input.then === 'function';
+      return !!(isPromise || isThenable)
+    } else {
+      return false
+    }
+  }
+
+  /**
+   * Returns true if the input is an iterable (`Map`, `Set`, `Array`, Generator etc.).
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   * @example
+   * > t.isIterable('string')
+   * true
+   * > t.isIterable(new Map())
+   * true
+   * > t.isIterable([])
+   * true
+   * > t.isIterable((function * () {})())
+   * true
+   * > t.isIterable(Promise.resolve())
+   * false
+   * > t.isIterable(Promise)
+   * false
+   * > t.isIterable(true)
+   * false
+   * > t.isIterable({})
+   * false
+   * > t.isIterable(0)
+   * false
+   * > t.isIterable(1.1)
+   * false
+   * > t.isIterable(NaN)
+   * false
+   * > t.isIterable(Infinity)
+   * false
+   * > t.isIterable(function () {})
+   * false
+   * > t.isIterable(Date)
+   * false
+   * > t.isIterable()
+   * false
+   * > t.isIterable({ then: function () {} })
+   * false
+   */
+  function isIterable (input) {
+    if (input === null || !isDefined(input)) {
+      return false
+    } else {
+      return (
+        typeof input[Symbol.iterator] === 'function' ||
+        typeof input[Symbol.asyncIterator] === 'function'
+      )
+    }
+  }
+
+  /**
+   * Returns true if the input value is a string. The equivalent of `typeof input === 'string'` for use in funcitonal contexts.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isString (input) {
+    return typeof input === 'string'
+  }
+
+  /**
+   * Returns true if the input value is a function. The equivalent of `typeof input === 'function'` for use in funcitonal contexts.
+   * @param {*} - the input to test
+   * @returns {boolean}
+   * @static
+   */
+  function isFunction (input) {
+    return typeof input === 'function'
+  }
+
+  var index = {
+    isNumber,
+    isPlainObject,
+    isArrayLike,
+    isObject,
+    isDefined,
+    isUndefined,
+    isNull,
+    isDefinedValue,
+    isClass,
+    isPrimitive,
+    isPromise,
+    isIterable,
+    isString,
+    isFunction
+  };
+
+  exports.default = index;
+  exports.isArrayLike = isArrayLike;
+  exports.isClass = isClass;
+  exports.isDefined = isDefined;
+  exports.isDefinedValue = isDefinedValue;
+  exports.isFunction = isFunction;
+  exports.isIterable = isIterable;
+  exports.isNull = isNull;
+  exports.isNumber = isNumber;
+  exports.isObject = isObject;
+  exports.isPlainObject = isPlainObject;
+  exports.isPrimitive = isPrimitive;
+  exports.isPromise = isPromise;
+  exports.isString = isString;
+  exports.isUndefined = isUndefined;
+
+  Object.defineProperty(exports, '__esModule', { value: true });
+
+}));
diff --git a/igv_component/node_modules/wordwrapjs/node_modules/typical/index.mjs b/igv_component/node_modules/wordwrapjs/node_modules/typical/index.mjs
new file mode 100644
index 0000000000000000000000000000000000000000..d3468a97fb50bc919fa70b7ff0d6b5e5ba384216
--- /dev/null
+++ b/igv_component/node_modules/wordwrapjs/node_modules/typical/index.mjs
@@ -0,0 +1,269 @@
+/**
+ * Isomorphic, functional type-checking for Javascript.
+ * @module typical
+ * @typicalname t
+ * @example
+ * const t = require('typical')
+ * const allDefined = array.every(t.isDefined)
+ */
+
+/**
+ * Returns true if input is a number. It is a more reasonable alternative to `typeof n` which returns `number` for `NaN` and `Infinity`.
+ *
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isNumber(0)
+ * true
+ * > t.isNumber(1)
+ * true
+ * > t.isNumber(1.1)
+ * true
+ * > t.isNumber(0xff)
+ * true
+ * > t.isNumber(0644)
+ * true
+ * > t.isNumber(6.2e5)
+ * true
+ * > t.isNumber(NaN)
+ * false
+ * > t.isNumber(Infinity)
+ * false
+ */
+export function isNumber (n) {
+  return !isNaN(parseFloat(n)) && isFinite(n)
+}
+
+/**
+ * A plain object is a simple object literal, it is not an instance of a class. Returns true if the input `typeof` is `object` and directly decends from `Object`.
+ *
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isPlainObject({ something: 'one' })
+ * true
+ * > t.isPlainObject(new Date())
+ * false
+ * > t.isPlainObject([ 0, 1 ])
+ * false
+ * > t.isPlainObject(/test/)
+ * false
+ * > t.isPlainObject(1)
+ * false
+ * > t.isPlainObject('one')
+ * false
+ * > t.isPlainObject(null)
+ * false
+ * > t.isPlainObject((function * () {})())
+ * false
+ * > t.isPlainObject(function * () {})
+ * false
+ */
+export function isPlainObject (input) {
+  return input !== null && typeof input === 'object' && input.constructor === Object
+}
+
+/**
+ * An array-like value has all the properties of an array yet is not an array instance. An example is the `arguments` object. Returns `true`` if the input value is an object, not `null`` and has a `length` property set with a numeric value.
+ *
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * function sum(x, y){
+ *   console.log(t.isArrayLike(arguments))
+ *   // prints `true`
+ * }
+ */
+export function isArrayLike (input) {
+  return isObject(input) && typeof input.length === 'number'
+}
+
+/**
+ * Returns true if the typeof input is `'object'` but not null.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isObject (input) {
+  return typeof input === 'object' && input !== null
+}
+
+/**
+ * Returns true if the input value is defined.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isDefined (input) {
+  return typeof input !== 'undefined'
+}
+
+/**
+ * Returns true if the input value is undefined.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isUndefined (input) {
+  return !isDefined(input)
+}
+
+/**
+ * Returns true if the input value is null.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isNull (input) {
+ return input === null
+}
+
+/**
+ * Returns true if the input value is not one of `undefined`, `null`, or `NaN`.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isDefinedValue (input) {
+ return isDefined(input) && !isNull(input) && !Number.isNaN(input)
+}
+
+/**
+ * Returns true if the input value is an ES2015 `class`.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isClass (input) {
+  if (typeof input === 'function') {
+    return /^class /.test(Function.prototype.toString.call(input))
+  } else {
+    return false
+  }
+}
+
+/**
+ * Returns true if the input is a string, number, symbol, boolean, null or undefined value.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isPrimitive (input) {
+  if (input === null) return true
+  switch (typeof input) {
+    case 'string':
+    case 'number':
+    case 'symbol':
+    case 'undefined':
+    case 'boolean':
+      return true
+    default:
+      return false
+  }
+}
+
+/**
+ * Returns true if the input is a Promise.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isPromise (input) {
+  if (input) {
+    const isPromise = isDefined(Promise) && input instanceof Promise
+    const isThenable = input.then && typeof input.then === 'function'
+    return !!(isPromise || isThenable)
+  } else {
+    return false
+  }
+}
+
+/**
+ * Returns true if the input is an iterable (`Map`, `Set`, `Array`, Generator etc.).
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ * @example
+ * > t.isIterable('string')
+ * true
+ * > t.isIterable(new Map())
+ * true
+ * > t.isIterable([])
+ * true
+ * > t.isIterable((function * () {})())
+ * true
+ * > t.isIterable(Promise.resolve())
+ * false
+ * > t.isIterable(Promise)
+ * false
+ * > t.isIterable(true)
+ * false
+ * > t.isIterable({})
+ * false
+ * > t.isIterable(0)
+ * false
+ * > t.isIterable(1.1)
+ * false
+ * > t.isIterable(NaN)
+ * false
+ * > t.isIterable(Infinity)
+ * false
+ * > t.isIterable(function () {})
+ * false
+ * > t.isIterable(Date)
+ * false
+ * > t.isIterable()
+ * false
+ * > t.isIterable({ then: function () {} })
+ * false
+ */
+export function isIterable (input) {
+  if (input === null || !isDefined(input)) {
+    return false
+  } else {
+    return (
+      typeof input[Symbol.iterator] === 'function' ||
+      typeof input[Symbol.asyncIterator] === 'function'
+    )
+  }
+}
+
+/**
+ * Returns true if the input value is a string. The equivalent of `typeof input === 'string'` for use in funcitonal contexts.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isString (input) {
+  return typeof input === 'string'
+}
+
+/**
+ * Returns true if the input value is a function. The equivalent of `typeof input === 'function'` for use in funcitonal contexts.
+ * @param {*} - the input to test
+ * @returns {boolean}
+ * @static
+ */
+export function isFunction (input) {
+  return typeof input === 'function'
+}
+
+export default {
+  isNumber,
+  isPlainObject,
+  isArrayLike,
+  isObject,
+  isDefined,
+  isUndefined,
+  isNull,
+  isDefinedValue,
+  isClass,
+  isPrimitive,
+  isPromise,
+  isIterable,
+  isString,
+  isFunction
+}
diff --git a/igv_component/node_modules/wordwrapjs/node_modules/typical/package.json b/igv_component/node_modules/wordwrapjs/node_modules/typical/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..d664f1bd14c678bbde674c8e4e7a5efc6ab77b6e
--- /dev/null
+++ b/igv_component/node_modules/wordwrapjs/node_modules/typical/package.json
@@ -0,0 +1,63 @@
+{
+  "name": "typical",
+  "author": "Lloyd Brookes <75pound@gmail.com>",
+  "version": "5.2.0",
+  "description": "Isomorphic, functional type-checking for Javascript",
+  "repository": "https://github.com/75lb/typical",
+  "license": "MIT",
+  "main": "dist/index.js",
+  "keywords": [
+    "type",
+    "checking",
+    "check",
+    "value",
+    "valid",
+    "is",
+    "number",
+    "object",
+    "plainobject",
+    "array",
+    "like",
+    "defined",
+    "string",
+    "boolean",
+    "function",
+    "promise",
+    "iterable",
+    "class",
+    "primitive",
+    "isstring",
+    "isclass",
+    "isiterable",
+    "isdefined",
+    "isobject",
+    "isomorphic"
+  ],
+  "engines": {
+    "node": ">=8"
+  },
+  "scripts": {
+    "test": "npm run dist && npm run test:js && npm run test:esm",
+    "test:all": "npm run test:js && npm run test:esm && npm run test:web",
+    "test:js": "rollup test/*.mjs -f cjs -d tmp/test -e assert && test-runner tmp/test/test*.js",
+    "test:esm": "esm-runner test/*.mjs",
+    "test:web": "web-runner test/test.mjs",
+    "test:v8": "rollup test/test.mjs test/test-default.mjs -f cjs -d tmp/testv8 && test-runner tmp/testv8/test*.js",
+    "dist": "rollup index.mjs -f umd -n typical -o dist/index.js --exports named",
+    "docs": "jsdoc2md -c jsdoc.conf -t README.hbs index.mjs > README.md; echo",
+    "cover": "nyc npm test && nyc report --reporter=text-lcov | coveralls"
+  },
+  "devDependencies": {
+    "coveralls": "^3.0.7",
+    "esm-runner": "^0.1.5",
+    "jsdoc-to-markdown": "^5.0.2",
+    "nyc": "^14.1.1",
+    "rollup": "^1.25.1",
+    "test-object-model": "^0.4.4",
+    "test-runner": "^0.6.0"
+  },
+  "files": [
+    "index.mjs",
+    "dist/index.js"
+  ]
+}
diff --git a/igv_component/node_modules/wordwrapjs/package.json b/igv_component/node_modules/wordwrapjs/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..e44a96db7f8de3d4beb87099212759e36a806956
--- /dev/null
+++ b/igv_component/node_modules/wordwrapjs/package.json
@@ -0,0 +1,34 @@
+{
+  "name": "wordwrapjs",
+  "author": "Lloyd Brookes <75pound@gmail.com>",
+  "version": "4.0.1",
+  "description": "Word-wrapping for javascript.",
+  "repository": "https://github.com/75lb/wordwrapjs.git",
+  "license": "MIT",
+  "keywords": [
+    "word",
+    "line",
+    "wrap",
+    "text",
+    "columns",
+    "wordwrap"
+  ],
+  "engines": {
+    "node": ">=8.0.0"
+  },
+  "scripts": {
+    "test": "test-runner test.js",
+    "docs": "jsdoc2md -t README.hbs index.js > README.md; echo"
+  },
+  "devDependencies": {
+    "jsdoc-to-markdown": "^7.0.0",
+    "test-runner": "~0.6.3"
+  },
+  "dependencies": {
+    "reduce-flatten": "^2.0.0",
+    "typical": "^5.2.0"
+  },
+  "files": [
+    "index.js"
+  ]
+}
diff --git a/igv_component/package-lock.json b/igv_component/package-lock.json
new file mode 100644
index 0000000000000000000000000000000000000000..ea810c90b6b354978d0ad5d5bb9596bc022ce1e8
--- /dev/null
+++ b/igv_component/package-lock.json
@@ -0,0 +1,405 @@
+{
+  "name": "igvcomponent",
+  "version": "1.0.0",
+  "lockfileVersion": 3,
+  "requires": true,
+  "packages": {
+    "": {
+      "name": "igvcomponent",
+      "version": "1.0.0",
+      "license": "ISC",
+      "dependencies": {
+        "igv": "^2.15.11",
+        "streamlit-component-lib": "^2.0.0"
+      }
+    },
+    "node_modules/@types/command-line-args": {
+      "version": "5.2.0",
+      "resolved": "https://registry.npmjs.org/@types/command-line-args/-/command-line-args-5.2.0.tgz",
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+    },
+    "node_modules/@types/command-line-usage": {
+      "version": "5.0.2",
+      "resolved": "https://registry.npmjs.org/@types/command-line-usage/-/command-line-usage-5.0.2.tgz",
+      "integrity": "sha512-n7RlEEJ+4x4TS7ZQddTmNSxP+zziEG0TNsMfiRIxcIVXt71ENJ9ojeXmGO3wPoTdn7pJcU2xc3CJYMktNT6DPg=="
+    },
+    "node_modules/@types/flatbuffers": {
+      "version": "1.10.3",
+      "resolved": "https://registry.npmjs.org/@types/flatbuffers/-/flatbuffers-1.10.3.tgz",
+      "integrity": "sha512-kwJQsAROanCiMXSLjcTLmYVBIJ9Qyuqs92SaDIcj2EII2KnDgZbiU7it1Z/JfZd1gmxw/lAahMysQ6ZM+j3Ryw=="
+    },
+    "node_modules/@types/node": {
+      "version": "18.7.23",
+      "resolved": "https://registry.npmjs.org/@types/node/-/node-18.7.23.tgz",
+      "integrity": "sha512-DWNcCHolDq0ZKGizjx2DZjR/PqsYwAcYUJmfMWqtVU2MBMG5Mo+xFZrhGId5r/O5HOuMPyQEcM6KUBp5lBZZBg=="
+    },
+    "node_modules/@types/pad-left": {
+      "version": "2.1.1",
+      "resolved": "https://registry.npmjs.org/@types/pad-left/-/pad-left-2.1.1.tgz",
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+    },
+    "node_modules/ansi-styles": {
+      "version": "3.2.1",
+      "resolved": "https://registry.npmjs.org/ansi-styles/-/ansi-styles-3.2.1.tgz",
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+      "dependencies": {
+        "color-convert": "^1.9.0"
+      },
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/apache-arrow": {
+      "version": "11.0.0",
+      "resolved": "https://registry.npmjs.org/apache-arrow/-/apache-arrow-11.0.0.tgz",
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+      "dependencies": {
+        "@types/command-line-args": "5.2.0",
+        "@types/command-line-usage": "5.0.2",
+        "@types/flatbuffers": "*",
+        "@types/node": "18.7.23",
+        "@types/pad-left": "2.1.1",
+        "command-line-args": "5.2.1",
+        "command-line-usage": "6.1.3",
+        "flatbuffers": "2.0.4",
+        "json-bignum": "^0.0.3",
+        "pad-left": "^2.1.0",
+        "tslib": "^2.4.0"
+      },
+      "bin": {
+        "arrow2csv": "bin/arrow2csv.js"
+      }
+    },
+    "node_modules/array-back": {
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/array-back/-/array-back-3.1.0.tgz",
+      "integrity": "sha512-TkuxA4UCOvxuDK6NZYXCalszEzj+TLszyASooky+i742l9TqsOdYCMJJupxRic61hwquNtppB3hgcuq9SVSH1Q==",
+      "engines": {
+        "node": ">=6"
+      }
+    },
+    "node_modules/chalk": {
+      "version": "2.4.2",
+      "resolved": "https://registry.npmjs.org/chalk/-/chalk-2.4.2.tgz",
+      "integrity": "sha512-Mti+f9lpJNcwF4tWV8/OrTTtF1gZi+f8FqlyAdouralcFWFQWF2+NgCHShjkCb+IFBLq9buZwE1xckQU4peSuQ==",
+      "dependencies": {
+        "ansi-styles": "^3.2.1",
+        "escape-string-regexp": "^1.0.5",
+        "supports-color": "^5.3.0"
+      },
+      "engines": {
+        "node": ">=4"
+      }
+    },
+    "node_modules/color-convert": {
+      "version": "1.9.3",
+      "resolved": "https://registry.npmjs.org/color-convert/-/color-convert-1.9.3.tgz",
+      "integrity": "sha512-QfAUtd+vFdAtFQcC8CCyYt1fYWxSqAiK2cSD6zDB8N3cpsEBAvRxp9zOGg6G/SHHJYAT88/az/IuDGALsNVbGg==",
+      "dependencies": {
+        "color-name": "1.1.3"
+      }
+    },
+    "node_modules/color-name": {
+      "version": "1.1.3",
+      "resolved": "https://registry.npmjs.org/color-name/-/color-name-1.1.3.tgz",
+      "integrity": "sha512-72fSenhMw2HZMTVHeCA9KCmpEIbzWiQsjN+BHcBbS9vr1mtt+vJjPdksIBNUmKAW8TFUDPJK5SUU3QhE9NEXDw=="
+    },
+    "node_modules/command-line-args": {
+      "version": "5.2.1",
+      "resolved": "https://registry.npmjs.org/command-line-args/-/command-line-args-5.2.1.tgz",
+      "integrity": "sha512-H4UfQhZyakIjC74I9d34fGYDwk3XpSr17QhEd0Q3I9Xq1CETHo4Hcuo87WyWHpAF1aSLjLRf5lD9ZGX2qStUvg==",
+      "dependencies": {
+        "array-back": "^3.1.0",
+        "find-replace": "^3.0.0",
+        "lodash.camelcase": "^4.3.0",
+        "typical": "^4.0.0"
+      },
+      "engines": {
+        "node": ">=4.0.0"
+      }
+    },
+    "node_modules/command-line-usage": {
+      "version": "6.1.3",
+      "resolved": "https://registry.npmjs.org/command-line-usage/-/command-line-usage-6.1.3.tgz",
+      "integrity": "sha512-sH5ZSPr+7UStsloltmDh7Ce5fb8XPlHyoPzTpyyMuYCtervL65+ubVZ6Q61cFtFl62UyJlc8/JwERRbAFPUqgw==",
+      "dependencies": {
+        "array-back": "^4.0.2",
+        "chalk": "^2.4.2",
+        "table-layout": "^1.0.2",
+        "typical": "^5.2.0"
+      },
+      "engines": {
+        "node": ">=8.0.0"
+      }
+    },
+    "node_modules/command-line-usage/node_modules/array-back": {
+      "version": "4.0.2",
+      "resolved": "https://registry.npmjs.org/array-back/-/array-back-4.0.2.tgz",
+      "integrity": "sha512-NbdMezxqf94cnNfWLL7V/im0Ub+Anbb0IoZhvzie8+4HJ4nMQuzHuy49FkGYCJK2yAloZ3meiB6AVMClbrI1vg==",
+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/command-line-usage/node_modules/typical": {
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+      "engines": {
+        "node": ">=8"
+      }
+    },
+    "node_modules/deep-extend": {
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+      "resolved": "https://registry.npmjs.org/deep-extend/-/deep-extend-0.6.0.tgz",
+      "integrity": "sha512-LOHxIOaPYdHlJRtCQfDIVZtfw/ufM8+rVj649RIHzcm/vGwQRXFt6OPqIFWsm2XEMrNIEtWR64sY1LEKD2vAOA==",
+      "engines": {
+        "node": ">=4.0.0"
+      }
+    },
+    "node_modules/escape-string-regexp": {
+      "version": "1.0.5",
+      "resolved": "https://registry.npmjs.org/escape-string-regexp/-/escape-string-regexp-1.0.5.tgz",
+      "integrity": "sha512-vbRorB5FUQWvla16U8R/qgaFIya2qGzwDrNmCZuYKrbdSUMG6I1ZCGQRefkRVhuOkIGVne7BQ35DSfo1qvJqFg==",
+      "engines": {
+        "node": ">=0.8.0"
+      }
+    },
+    "node_modules/find-replace": {
+      "version": "3.0.0",
+      "resolved": "https://registry.npmjs.org/find-replace/-/find-replace-3.0.0.tgz",
+      "integrity": "sha512-6Tb2myMioCAgv5kfvP5/PkZZ/ntTpVK39fHY7WkWBgvbeE+VHd/tZuZ4mrC+bxh4cfOZeYKVPaJIZtZXV7GNCQ==",
+      "dependencies": {
+        "array-back": "^3.0.1"
+      },
+      "engines": {
+        "node": ">=4.0.0"
+      }
+    },
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diff --git a/igv_component/package.json b/igv_component/package.json
new file mode 100644
index 0000000000000000000000000000000000000000..16d2a0a2ba07a3de07588d698701801f3ee32973
--- /dev/null
+++ b/igv_component/package.json
@@ -0,0 +1,15 @@
+{
+  "name": "igvcomponent",
+  "version": "1.0.0",
+  "description": "integration of igv",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "igv": "^2.15.11",
+    "streamlit-component-lib": "^2.0.0"
+  }
+}